[sceSaveData] user folder sometimes appeared in the previous folder has been fixed.

* [shader-decoder-part1] Implemented a shader decoder for Gen5 shaders, including IR generation, metadata reading, scalar evaluation, and SPIR-V translation. Updated related exports and video output components to support the new shader decoding functionality.

* [shader decoder] correct RDNA2 operands, fixing synchronization problems

* [shader-decoder] RDNA2 decoder improvements

* [shader-decoder] fix RDNA2 shift masking and sprite draws

* [shader-decoder] improve RDNA2 shader decoder to support more instructions and fix some issues with the previous implementation.

.editorconfig

@@ -14,7 +14,7 @@ indent_size = 4
 indent_style = space
 tab_width = 4
 
-[*.{md,json,yml,xml,props,csproj}]
+[*.{md,json,yml,props,csproj}]
 
 indent_size = 2
 tab_width = 2

.github/ISSUE_TEMPLATE/game-compatibility.yml

@@ -16,11 +16,6 @@ body:
         Example title:
         Demon’s Souls (PPSA01341)
 
-        **Before reporting:**
-        - Test the game on a **fresh build from `main`**, not an old release.
-        - Copy the **exact commit SHA** shown at the top of the log.
-        - `DEBUG` and `TRACE` lines are diagnostic context, not errors by themselves; report the last milestone or the first `WARNING`, `ERROR`, or `CRITICAL` line connected to the stop.
-
   - type: input
     id: game_name
     attributes:
@@ -78,20 +73,11 @@ body:
     id: logs
     attributes:
       label: Log File
-      description: Attach the **full** log file (`.log`, `.txt`, or `.zip`). Do not paste only a fragment — the maintainer needs the complete log from launch to crash.
+      description: Drag and drop your log file here, or click to browse
     validations:
-      required: true
+      required: false
       accept: ".log,.txt,.zip"
 
-  - type: input
-    id: last_milestone_first_error
-    attributes:
-      label: Last Milestone / First Error
-      description: Paste the **last useful milestone line** or the **first `WARNING`, `ERROR`, or `CRITICAL` line connected to the stop** from the log. `DEBUG`/`TRACE` lines do not count unless a real error follows them.
-      placeholder: "e.g. CpuEngine: native-only  OR  [ERROR] Native backend FAILED: ..."
-    validations:
-      required: true
-
   - type: dropdown
     id: operating_system
     attributes:
@@ -133,8 +119,7 @@ body:
     id: emulator_version
     attributes:
       label: Emulator Version / Commit
-      description: Copy the **exact short SHA** from the top of the log. Do not enter just `0.0.1` without a commit hash.
+      placeholder: e.g. v0.0.1 / a1b2c3d
-      placeholder: e.g. a1b2c3d
     validations:
       required: true
 

.gitignore

@@ -26,7 +26,6 @@ arm64/
 *.userosscache
 *.sln.docstates
 
-.packages
 packages/
 *.nupkg
 .nuget/
@@ -37,6 +36,3 @@ packages/
 Thumbs.db
 Desktop.ini
 ehthumbs.db
-
-.vs/
-.idea/

Directory.Build.props

@@ -32,18 +32,4 @@ SPDX-License-Identifier: GPL-2.0-or-later
     <DebugType>none</DebugType>
     <DebugSymbols>false</DebugSymbols>
   </PropertyGroup>
-
-  <!-- Build provenance surfaced by SharpEmu.Logging.BuildInfo as a banner at the
-       top of the log. Populated from GitHub Actions environment variables when
-       building in CI; empty locally. -->
-  <ItemGroup>
-    <AssemblyMetadata Include="SharpEmu.BuildConfiguration" Value="$(Configuration)" />
-    <AssemblyMetadata Condition="'$(GITHUB_SHA)' != ''" Include="SharpEmu.BuildSha" Value="$(GITHUB_SHA)" />
-    <AssemblyMetadata Condition="'$(GITHUB_REF_NAME)' != ''" Include="SharpEmu.BuildBranch" Value="$(GITHUB_REF_NAME)" />
-    <AssemblyMetadata Condition="'$(GITHUB_REF)' != ''" Include="SharpEmu.BuildRef" Value="$(GITHUB_REF)" />
-    <AssemblyMetadata Condition="'$(GITHUB_EVENT_NAME)' != ''" Include="SharpEmu.BuildEventName" Value="$(GITHUB_EVENT_NAME)" />
-    <AssemblyMetadata Condition="'$(GITHUB_REPOSITORY)' != ''" Include="SharpEmu.BuildRepository" Value="$(GITHUB_REPOSITORY)" />
-    <AssemblyMetadata Condition="'$(GITHUB_SERVER_URL)' != ''" Include="SharpEmu.BuildServerUrl" Value="$(GITHUB_SERVER_URL)" />
-    <AssemblyMetadata Condition="'$(GITHUB_RUN_ID)' != ''" Include="SharpEmu.BuildRunId" Value="$(GITHUB_RUN_ID)" />
-  </ItemGroup>
 </Project>

Directory.Packages.props

@@ -1,22 +1,16 @@
-<!--
+<!--
 Copyright (C) 2026 SharpEmu Emulator Project
 SPDX-License-Identifier: GPL-2.0-or-later
 -->
+
 <Project>
   <PropertyGroup>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
   <ItemGroup>
-    <PackageVersion Include="Avalonia" Version="11.3.18" />
-    <PackageVersion Include="Avalonia.Desktop" Version="11.3.18" />
-    <PackageVersion Include="Avalonia.Fonts.Inter" Version="11.3.18" />
-    <PackageVersion Include="Avalonia.Themes.Fluent" Version="11.3.18" />
     <PackageVersion Include="Iced" Version="1.21.0" />
     <PackageVersion Include="Silk.NET.Vulkan" Version="2.23.0" />
-    <PackageVersion Include="Silk.NET.Vulkan.Extensions.EXT" Version="2.23.0" />
     <PackageVersion Include="Silk.NET.Vulkan.Extensions.KHR" Version="2.23.0" />
     <PackageVersion Include="Silk.NET.Windowing" Version="2.23.0" />
-    <!-- Transitive of Avalonia.Desktop; pinned to fix GHSA-xrw6-gwf8-vvr9 -->
-    <PackageVersion Include="Tmds.DBus.Protocol" Version="0.21.3" />
   </ItemGroup>
-</Project>
+</Project>

LICENSES/MIT.txt

@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2018 Alex Barney
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.

REUSE.toml

@@ -3,21 +3,13 @@ version = 1
 [[annotations]]
 path = [
     "REUSE.toml",
-    "nuget.config",
     "global.json",
     "**/packages.lock.json",
     "scripts/ps5_names.txt",
     "src/SharpEmu.HLE/Aerolib/aerolib.bin",
     "_logs/**",
-    ".github/images/**",
+    ".github/images/**"
-    "assets/images/**"
 ]
 precedence = "aggregate"
 SPDX-FileCopyrightText = "SharpEmu Emulator Project"
 SPDX-License-Identifier = "GPL-2.0-or-later"
-
-[[annotations]]
-path = "src/SharpEmu.GUI/Atrac9/**"
-precedence = "aggregate"
-SPDX-FileCopyrightText = "2018 Alex Barney"
-SPDX-License-Identifier = "MIT"

SharpEmu.slnx

@@ -7,7 +7,6 @@ SPDX-License-Identifier: GPL-2.0-or-later
   <Folder Name="/src/">
     <Project Path="src/SharpEmu.CLI/SharpEmu.CLI.csproj" />
     <Project Path="src/SharpEmu.Core/SharpEmu.Core.csproj" />
-    <Project Path="src/SharpEmu.GUI/SharpEmu.GUI.csproj" />
     <Project Path="src/SharpEmu.HLE/SharpEmu.HLE.csproj" />
     <Project Path="src/SharpEmu.Libs/SharpEmu.Libs.csproj" />
     <Project Path="src/SharpEmu.Logging/SharpEmu.Logging.csproj" />

nuget.config

@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<configuration>
-  <config>
-    <add key="globalPackagesFolder" value=".packages" />
-  </config>
-
-  <packageSources>
-    <clear />
-    <add key="Nuget" value="https://api.nuget.org/v3/index.json" />
-  </packageSources>
-
-  <packageSourceMapping>
-    <packageSource key="Nuget">
-      <package pattern="*" />
-    </packageSource>
-  </packageSourceMapping>
-</configuration>

src/SharpEmu.CLI/Program.cs

@@ -3,7 +3,6 @@
 
 using SharpEmu.Core.Runtime;
 using SharpEmu.Core.Cpu;
-using SharpEmu.GUI;
 using SharpEmu.HLE;
 using SharpEmu.Logging;
 using System.Runtime.InteropServices;
@@ -25,45 +24,12 @@ internal static partial class Program
     private const ulong PROCESS_CREATION_MITIGATION_POLICY2_CET_USER_SHADOW_STACKS_ALWAYS_OFF = 0x00000002UL << 28;
     private const ulong PROCESS_CREATION_MITIGATION_POLICY2_USER_CET_SET_CONTEXT_IP_VALIDATION_ALWAYS_OFF = 0x00000002UL << 32;
     private const ulong PROCESS_CREATION_MITIGATION_POLICY2_XTENDED_CONTROL_FLOW_GUARD_ALWAYS_OFF = 0x00000002UL << 40;
-    private const int ATTACH_PARENT_PROCESS = -1;
-    private const int STD_OUTPUT_HANDLE = -11;
-    private const int STD_ERROR_HANDLE = -12;
-    private const uint GENERIC_READ = 0x80000000;
-    private const uint GENERIC_WRITE = 0x40000000;
-    private const uint FILE_SHARE_READ = 0x00000001;
-    private const uint FILE_SHARE_WRITE = 0x00000002;
-    private const uint OPEN_EXISTING = 3;
 
-    [STAThread]
     private static int Main(string[] args)
     {
-        try
-        {
-            return Run(args);
-        }
-        finally
-        {
-            SharpEmuLog.Shutdown();
-        }
-    }
-
-    private static int Run(string[] args)
-    {
-        args = NormalizeInternalArguments(args, out var isMitigatedChild);
-        if (args.Length == 0 && !isMitigatedChild)
-        {
-            // No arguments: open the desktop frontend. Any argument selects
-            // the classic CLI behavior below.
-            return GuiLauncher.Run();
-        }
-
-        // The executable uses the GUI subsystem, so CLI mode has to connect
-        // itself to a console before the first write.
-        EnsureCliConsole();
-        UseUtf8ConsoleOutput();
-
         Console.Error.WriteLine($"[DEBUG] SharpEmu starting with {args.Length} args");
 
+        args = NormalizeInternalArguments(args, out var isMitigatedChild);
         if (!isMitigatedChild && TryRunMitigatedChild(args, out var childExitCode))
         {
             return childExitCode;
@@ -77,11 +43,9 @@ internal static partial class Program
 
         SharpEmuLog.MinimumLevel = logLevel;
 
-        Log.Info(BuildInfo.Banner);
-
         ebootPath = Path.GetFullPath(ebootPath);
         Console.Error.WriteLine($"[DEBUG] Full path: {ebootPath}");
-
+        
         if (!File.Exists(ebootPath))
         {
             Log.Error($"EBOOT file was not found: {ebootPath}");
@@ -137,100 +101,6 @@ internal static partial class Program
         return result == OrbisGen2Result.ORBIS_GEN2_OK ? 0 : 4;
     }
 
-    private static void EnsureCliConsole()
-    {
-        if (!OperatingSystem.IsWindows())
-        {
-            return;
-        }
-
-        // Standard handles already provided (pipes or file redirection, e.g.
-        // when the GUI or a script launches us): use them as-is.
-        if (IsHandleValid(GetStdHandle(STD_OUTPUT_HANDLE)) && IsHandleValid(GetStdHandle(STD_ERROR_HANDLE)))
-        {
-            return;
-        }
-
-        // Prefer the console of the parent process (interactive terminal);
-        // create one only when started with arguments but no terminal at all
-        // (e.g. a shortcut), so usage and errors remain visible.
-        if (!AttachConsole(ATTACH_PARENT_PROCESS) && GetConsoleWindow() == 0)
-        {
-            _ = AllocConsole();
-        }
-
-        RebindStdHandleToConsole(STD_OUTPUT_HANDLE);
-        RebindStdHandleToConsole(STD_ERROR_HANDLE);
-    }
-
-    /// <summary>
-    /// Makes console writes UTF-8 so the GUI's pipe reader (and any modern
-    /// terminal) decodes non-ASCII text correctly. Without this, redirected
-    /// output falls back to the OS ANSI code page and characters like "—"
-    /// arrive mangled.
-    /// </summary>
-    private static void UseUtf8ConsoleOutput()
-    {
-        try
-        {
-            // Also recreates the redirected Console.Out/Error writers with
-            // the new encoding.
-            Console.OutputEncoding = Encoding.UTF8;
-            return;
-        }
-        catch (Exception)
-        {
-            // No attached console (GUI-subsystem child with piped output):
-            // wrap the raw handles instead.
-        }
-
-        if (Console.IsOutputRedirected)
-        {
-            Console.SetOut(new StreamWriter(
-                Console.OpenStandardOutput(),
-                new UTF8Encoding(encoderShouldEmitUTF8Identifier: false))
-            {
-                AutoFlush = true,
-            });
-        }
-
-        if (Console.IsErrorRedirected)
-        {
-            Console.SetError(new StreamWriter(
-                Console.OpenStandardError(),
-                new UTF8Encoding(encoderShouldEmitUTF8Identifier: false))
-            {
-                AutoFlush = true,
-            });
-        }
-    }
-
-    private static void RebindStdHandleToConsole(int stdHandle)
-    {
-        if (IsHandleValid(GetStdHandle(stdHandle)) || GetConsoleWindow() == 0)
-        {
-            return;
-        }
-
-        var conOut = CreateFileW(
-            "CONOUT$",
-            GENERIC_READ | GENERIC_WRITE,
-            FILE_SHARE_READ | FILE_SHARE_WRITE,
-            0,
-            OPEN_EXISTING,
-            0,
-            0);
-        if (IsHandleValid(conOut))
-        {
-            _ = SetStdHandle(stdHandle, conOut);
-        }
-    }
-
-    private static bool IsHandleValid(nint handle)
-    {
-        return handle != 0 && handle != -1;
-    }
-
     private static string[] NormalizeInternalArguments(string[] args, out bool isMitigatedChild)
     {
         isMitigatedChild = false;
@@ -800,32 +670,4 @@ internal static partial class Program
     [DllImport("kernel32.dll", SetLastError = true)]
     [return: MarshalAs(UnmanagedType.Bool)]
     private static extern bool CloseHandle(nint handle);
-
-    [DllImport("kernel32.dll")]
-    private static extern nint GetConsoleWindow();
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool AttachConsole(int processId);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool AllocConsole();
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    private static extern nint GetStdHandle(int stdHandle);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool SetStdHandle(int stdHandle, nint handle);
-
-    [DllImport("kernel32.dll", EntryPoint = "CreateFileW", SetLastError = true, CharSet = CharSet.Unicode)]
-    private static extern nint CreateFileW(
-        string fileName,
-        uint desiredAccess,
-        uint shareMode,
-        nint securityAttributes,
-        uint creationDisposition,
-        uint flagsAndAttributes,
-        nint templateFile);
 }

src/SharpEmu.CLI/SharpEmu.CLI.csproj

@@ -7,14 +7,11 @@ SPDX-License-Identifier: GPL-2.0-or-later
 
   <ItemGroup>
     <ProjectReference Include="..\SharpEmu.Core\SharpEmu.Core.csproj" />
-    <ProjectReference Include="..\SharpEmu.GUI\SharpEmu.GUI.csproj" />
     <ProjectReference Include="..\SharpEmu.Logging\SharpEmu.Logging.csproj" />
   </ItemGroup>
 
   <PropertyGroup>
-    <!-- GUI subsystem so starting without arguments opens the frontend with no
+    <OutputType>Exe</OutputType>
-         console window; CLI mode re-attaches to the parent terminal's console. -->
-    <OutputType>WinExe</OutputType>
     <AssemblyName>SharpEmu</AssemblyName>
     <RuntimeIdentifiers>win-x64;linux-x64;osx-arm64</RuntimeIdentifiers>
     <SelfContained>true</SelfContained>
@@ -33,15 +30,6 @@ SPDX-License-Identifier: GPL-2.0-or-later
     <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(RuntimeIdentifier)' == 'win-x64' Or '$(RuntimeIdentifier)' == ''">
-    <ApplicationIcon>..\..\assets\images\SharpEmu.ico</ApplicationIcon>
-    <Win32Icon>..\..\assets\images\SharpEmu.ico</Win32Icon>
-  </PropertyGroup>
-
-  <PropertyGroup>
-    <NoWarn>$(NoWarn);1591</NoWarn>
-  </PropertyGroup>
-  
   <ItemGroup>
     <Content Include="..\..\LICENSE.txt">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
@@ -50,17 +38,4 @@ SPDX-License-Identifier: GPL-2.0-or-later
     </Content>
   </ItemGroup>
 
-  <!-- Keep glfw as a loose file next to the executable; every other native
-       library is embedded into the single-file bundle. -->
-  <Target Name="KeepGlfwOutsideSingleFile" AfterTargets="ComputeResolvedFilesToPublishList">
-    <ItemGroup>
-      <_GlfwPublishFiles Include="@(ResolvedFileToPublish)"
-                         Condition="$([System.String]::Copy('%(ResolvedFileToPublish.Filename)').StartsWith('glfw'))" />
-      <ResolvedFileToPublish Remove="@(_GlfwPublishFiles)" />
-      <ResolvedFileToPublish Include="@(_GlfwPublishFiles)">
-        <ExcludeFromSingleFile>true</ExcludeFromSingleFile>
-      </ResolvedFileToPublish>
-    </ItemGroup>
-  </Target>
-
 </Project>

src/SharpEmu.CLI/packages.lock.json

@@ -8,105 +8,6 @@
         "resolved": "10.0.3",
         "contentHash": "0B6nZyCHWXnvmlB559oduOspVdNOnpNXPjhpWVMovLPAsDVG7A4jJR9rzECf67JUzxP8/ee/wA8clwIzJcWNFA=="
       },
-      "Avalonia.Angle.Windows.Natives": {
-        "type": "Transitive",
-        "resolved": "2.1.25547.20250602",
-        "contentHash": "ZL0VLc4s9rvNNFt19Pxm5UNAkmKNylugAwJPX9ulXZ6JWs/l6XZihPWWTyezaoNOVyEPU8YbURtW7XMAtqXH5A=="
-      },
-      "Avalonia.BuildServices": {
-        "type": "Transitive",
-        "resolved": "11.3.2",
-        "contentHash": "qHDToxto1e3hci5YqbG9n0Ty8mlp3zBUN5wT66wKqaDVzXyQ0do3EnRILd4Ke9jpvsktaPpgE0YjEk7hornryQ=="
-      },
-      "Avalonia.FreeDesktop": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "aUwv8BNruRUOaUfMu4U3uibIUS60/rSHgGOhd8zBkLkpxY3JFJvgRbeq5ZzHIyKXCuKi18PO00YHAgCarp3wdw==",
-        "dependencies": {
-          "Avalonia": "11.3.18",
-          "Tmds.DBus.Protocol": "0.21.3"
-        }
-      },
-      "Avalonia.Native": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "8g53DROFW6wVJAnTsE1Iu5bdZO5r0oqxbdbMQODs1QDYCK2IU/y/x/vQVKCYOvqxl4tXkzU9tExv8XqSGPWthQ==",
-        "dependencies": {
-          "Avalonia": "11.3.18"
-        }
-      },
-      "Avalonia.Remote.Protocol": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "vw+6ZfgTuu72dA9aVWn6u56t2nrBd5MoMU0wo/qI9XJAl/c0oYYphIvwLvJP1JorubQY4UE3d0ac8ULBhrGBiA=="
-      },
-      "Avalonia.Skia": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "/B4aXmNRNjG8I5U/a1xJI+bIi0XO6DDzS3mBrIKlVnJRY2CyZiUeESRQXLnIU77Z9TvqkUROs+D47s085YjFtA==",
-        "dependencies": {
-          "Avalonia": "11.3.18",
-          "HarfBuzzSharp": "8.3.1.1",
-          "HarfBuzzSharp.NativeAssets.Linux": "8.3.1.1",
-          "HarfBuzzSharp.NativeAssets.WebAssembly": "8.3.1.1",
-          "SkiaSharp": "2.88.9",
-          "SkiaSharp.NativeAssets.Linux": "2.88.9",
-          "SkiaSharp.NativeAssets.WebAssembly": "2.88.9"
-        }
-      },
-      "Avalonia.Win32": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "eioUHkM2PeLPETd1aEks3rvb9plbba6buIrNdrqCpwE/qgHKUjvRNBd5mUQfAbGgTLiAes524gB8uUMDhrsJVQ==",
-        "dependencies": {
-          "Avalonia": "11.3.18",
-          "Avalonia.Angle.Windows.Natives": "2.1.25547.20250602"
-        }
-      },
-      "Avalonia.X11": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "m4Ki/G5Dovnq+6QzfS0iGbK8V77Q6oTjToMLOB0CxPCCrl3Oxywh6kIjuGJDPaN6kopMmjxlNShyQf+vPYL+JA==",
-        "dependencies": {
-          "Avalonia": "11.3.18",
-          "Avalonia.FreeDesktop": "11.3.18",
-          "Avalonia.Skia": "11.3.18"
-        }
-      },
-      "HarfBuzzSharp": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "tLZN66oe/uiRPTZfrCU4i8ScVGwqHNh5MHrXj0yVf4l7Mz0FhTGnQ71RGySROTmdognAs0JtluHkL41pIabWuQ==",
-        "dependencies": {
-          "HarfBuzzSharp.NativeAssets.Win32": "8.3.1.1",
-          "HarfBuzzSharp.NativeAssets.macOS": "8.3.1.1"
-        }
-      },
-      "HarfBuzzSharp.NativeAssets.Linux": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "3EZ1mpIiKWRLL5hUYA82ZHteeDIVaEA/Z0rA/wU6tjx6crcAkJnBPwDXZugBSfo8+J3EznvRJf49uMsqYfKrHg=="
-      },
-      "HarfBuzzSharp.NativeAssets.macOS": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "jbtCsgftcaFLCA13tVKo5iWdElJScrulLTKJre36O4YQTIlwDtPPqhRZNk+Y0vv4D1gxbscasGRucUDfS44ofQ=="
-      },
-      "HarfBuzzSharp.NativeAssets.WebAssembly": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "loJweK2u/mH/3C2zBa0ggJlITIszOkK64HLAZB7FUT670dTg965whLFYHDQo69NmC4+d9UN0icLC9VHidXaVCA=="
-      },
-      "HarfBuzzSharp.NativeAssets.Win32": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "UsJtQsfAJoFDZrXc4hCUfRPMqccfKZ0iumJ/upcUjz/cmsTgVFGNEL5yaJWmkqsuFYdMWbj/En5/kS4PFl9hBA=="
-      },
-      "MicroCom.Runtime": {
-        "type": "Transitive",
-        "resolved": "0.11.0",
-        "contentHash": "MEnrZ3UIiH40hjzMDsxrTyi8dtqB5ziv3iBeeU4bXsL/7NLSal9F1lZKpK+tfBRnUoDSdtcW3KufE4yhATOMCA=="
-      },
       "Microsoft.DotNet.PlatformAbstractions": {
         "type": "Transitive",
         "resolved": "3.1.6",
@@ -158,38 +59,6 @@
           "Silk.NET.Windowing.Common": "2.23.0"
         }
       },
-      "SkiaSharp": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "3MD5VHjXXieSHCleRLuaTXmL2pD0mB7CcOB1x2kA1I4bhptf4e3R27iM93264ZYuAq6mkUyX5XbcxnZvMJYc1Q==",
-        "dependencies": {
-          "SkiaSharp.NativeAssets.Win32": "2.88.9",
-          "SkiaSharp.NativeAssets.macOS": "2.88.9"
-        }
-      },
-      "SkiaSharp.NativeAssets.Linux": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "cWSaJKVPWAaT/WIn9c8T5uT/l4ETwHxNJTkEOtNKjphNo8AW6TF9O32aRkxqw3l8GUdUo66Bu7EiqtFh/XG0Zg==",
-        "dependencies": {
-          "SkiaSharp": "2.88.9"
-        }
-      },
-      "SkiaSharp.NativeAssets.macOS": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "Nv5spmKc4505Ep7oUoJ5vp3KweFpeNqxpyGDWyeEPTX2uR6S6syXIm3gj75dM0YJz7NPvcix48mR5laqs8dPuA=="
-      },
-      "SkiaSharp.NativeAssets.WebAssembly": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "kt06RccBHSnAs2wDYdBSfsjIDbY3EpsOVqnlDgKdgvyuRA8ZFDaHRdWNx1VHjGgYzmnFCGiTJBnXFl5BqGwGnA=="
-      },
-      "SkiaSharp.NativeAssets.Win32": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "wb2kYgU7iy84nQLYZwMeJXixvK++GoIuECjU4ECaUKNuflyRlJKyiRhN1MAHswvlvzuvkrjRWlK0Za6+kYQK7w=="
-      },
       "Ultz.Native.GLFW": {
         "type": "Transitive",
         "resolved": "3.4.0",
@@ -204,29 +73,14 @@
           "SharpEmu.Logging": "[1.0.0, )"
         }
       },
-      "sharpemu.gui": {
-        "type": "Project",
-        "dependencies": {
-          "Avalonia": "[11.3.18, )",
-          "Avalonia.Desktop": "[11.3.18, )",
-          "Avalonia.Fonts.Inter": "[11.3.18, )",
-          "Avalonia.Themes.Fluent": "[11.3.18, )",
-          "SharpEmu.Logging": "[1.0.0, )",
-          "Tmds.DBus.Protocol": "[0.21.3, )"
-        }
-      },
       "sharpemu.hle": {
-        "type": "Project",
+        "type": "Project"
-        "dependencies": {
-          "SharpEmu.Logging": "[1.0.0, )"
-        }
       },
       "sharpemu.libs": {
         "type": "Project",
         "dependencies": {
           "SharpEmu.HLE": "[1.0.0, )",
           "Silk.NET.Vulkan": "[2.23.0, )",
-          "Silk.NET.Vulkan.Extensions.EXT": "[2.23.0, )",
           "Silk.NET.Vulkan.Extensions.KHR": "[2.23.0, )",
           "Silk.NET.Windowing": "[2.23.0, )"
         }
@@ -234,48 +88,6 @@
       "sharpemu.logging": {
         "type": "Project"
       },
-      "Avalonia": {
-        "type": "CentralTransitive",
-        "requested": "[11.3.18, )",
-        "resolved": "11.3.18",
-        "contentHash": "2C4UxhWUObWGgYKWic1x5BMMWGJP6SElb91WeOxs+X/iR26rtkqpxFFwwo50FXS9AyYnHfk8QKXDEfe7oT/kZA==",
-        "dependencies": {
-          "Avalonia.BuildServices": "11.3.2",
-          "Avalonia.Remote.Protocol": "11.3.18",
-          "MicroCom.Runtime": "0.11.0"
-        }
-      },
-      "Avalonia.Desktop": {
-        "type": "CentralTransitive",
-        "requested": "[11.3.18, )",
-        "resolved": "11.3.18",
-        "contentHash": "bilMPa5vYiis6fbNovb6esKytBnOCEGojBa1XFegLCRHCP6g6PvZwS0XF/YOAGkENRlHG8dI7lohOpQ9bIkq1g==",
-        "dependencies": {
-          "Avalonia": "11.3.18",
-          "Avalonia.Native": "11.3.18",
-          "Avalonia.Skia": "11.3.18",
-          "Avalonia.Win32": "11.3.18",
-          "Avalonia.X11": "11.3.18"
-        }
-      },
-      "Avalonia.Fonts.Inter": {
-        "type": "CentralTransitive",
-        "requested": "[11.3.18, )",
-        "resolved": "11.3.18",
-        "contentHash": "27u6hB3Y2Ue586yjfeVakberY73VNQXtuKwe/P927XG1QPlhsfmOyifLHDDpSHG85Zl1x/Xv9IZ3+tk9FnjcZQ==",
-        "dependencies": {
-          "Avalonia": "11.3.18"
-        }
-      },
-      "Avalonia.Themes.Fluent": {
-        "type": "CentralTransitive",
-        "requested": "[11.3.18, )",
-        "resolved": "11.3.18",
-        "contentHash": "+Q/TJoynD0zNuu5w2gD+xcTl7GNKJFxlPYAndRLs/mTDrNbbsvv/271WyIysbMPsXSjCyBDp7RCZzQkpD6x5Bg==",
-        "dependencies": {
-          "Avalonia": "11.3.18"
-        }
-      },
       "Iced": {
         "type": "CentralTransitive",
         "requested": "[1.21.0, )",
@@ -291,16 +103,6 @@
           "Silk.NET.Core": "2.23.0"
         }
       },
-      "Silk.NET.Vulkan.Extensions.EXT": {
-        "type": "CentralTransitive",
-        "requested": "[2.23.0, )",
-        "resolved": "2.23.0",
-        "contentHash": "+Oth189ksRiL6HvGCwIdnsYHawqrbO8y49u1H61z3wsfcHhQZeVDYe/wF5LD7fk3NcdgDvwFD3mLm1QWhdZySw==",
-        "dependencies": {
-          "Silk.NET.Core": "2.23.0",
-          "Silk.NET.Vulkan": "2.23.0"
-        }
-      },
       "Silk.NET.Vulkan.Extensions.KHR": {
         "type": "CentralTransitive",
         "requested": "[2.23.0, )",
@@ -320,61 +122,9 @@
           "Silk.NET.Windowing.Common": "2.23.0",
           "Silk.NET.Windowing.Glfw": "2.23.0"
         }
-      },
-      "Tmds.DBus.Protocol": {
-        "type": "CentralTransitive",
-        "requested": "[0.21.3, )",
-        "resolved": "0.21.3",
-        "contentHash": "hDwB8WsQoyALQKqIbwzS68UKdlnafDm4T/DkO/JrA/YIneP/rKv96SxYPVXeh3FP4i/SXfShrYftKLtciJAIlw=="
       }
     },
     "net10.0/linux-x64": {
-      "Avalonia.Angle.Windows.Natives": {
-        "type": "Transitive",
-        "resolved": "2.1.25547.20250602",
-        "contentHash": "ZL0VLc4s9rvNNFt19Pxm5UNAkmKNylugAwJPX9ulXZ6JWs/l6XZihPWWTyezaoNOVyEPU8YbURtW7XMAtqXH5A=="
-      },
-      "Avalonia.Native": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "8g53DROFW6wVJAnTsE1Iu5bdZO5r0oqxbdbMQODs1QDYCK2IU/y/x/vQVKCYOvqxl4tXkzU9tExv8XqSGPWthQ==",
-        "dependencies": {
-          "Avalonia": "11.3.18"
-        }
-      },
-      "HarfBuzzSharp.NativeAssets.Linux": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "3EZ1mpIiKWRLL5hUYA82ZHteeDIVaEA/Z0rA/wU6tjx6crcAkJnBPwDXZugBSfo8+J3EznvRJf49uMsqYfKrHg=="
-      },
-      "HarfBuzzSharp.NativeAssets.macOS": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "jbtCsgftcaFLCA13tVKo5iWdElJScrulLTKJre36O4YQTIlwDtPPqhRZNk+Y0vv4D1gxbscasGRucUDfS44ofQ=="
-      },
-      "HarfBuzzSharp.NativeAssets.Win32": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "UsJtQsfAJoFDZrXc4hCUfRPMqccfKZ0iumJ/upcUjz/cmsTgVFGNEL5yaJWmkqsuFYdMWbj/En5/kS4PFl9hBA=="
-      },
-      "SkiaSharp.NativeAssets.Linux": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "cWSaJKVPWAaT/WIn9c8T5uT/l4ETwHxNJTkEOtNKjphNo8AW6TF9O32aRkxqw3l8GUdUo66Bu7EiqtFh/XG0Zg==",
-        "dependencies": {
-          "SkiaSharp": "2.88.9"
-        }
-      },
-      "SkiaSharp.NativeAssets.macOS": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "Nv5spmKc4505Ep7oUoJ5vp3KweFpeNqxpyGDWyeEPTX2uR6S6syXIm3gj75dM0YJz7NPvcix48mR5laqs8dPuA=="
-      },
-      "SkiaSharp.NativeAssets.Win32": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "wb2kYgU7iy84nQLYZwMeJXixvK++GoIuECjU4ECaUKNuflyRlJKyiRhN1MAHswvlvzuvkrjRWlK0Za6+kYQK7w=="
-      },
       "Ultz.Native.GLFW": {
         "type": "Transitive",
         "resolved": "3.4.0",
@@ -382,52 +132,6 @@
       }
     },
     "net10.0/osx-arm64": {
-      "Avalonia.Angle.Windows.Natives": {
-        "type": "Transitive",
-        "resolved": "2.1.25547.20250602",
-        "contentHash": "ZL0VLc4s9rvNNFt19Pxm5UNAkmKNylugAwJPX9ulXZ6JWs/l6XZihPWWTyezaoNOVyEPU8YbURtW7XMAtqXH5A=="
-      },
-      "Avalonia.Native": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "8g53DROFW6wVJAnTsE1Iu5bdZO5r0oqxbdbMQODs1QDYCK2IU/y/x/vQVKCYOvqxl4tXkzU9tExv8XqSGPWthQ==",
-        "dependencies": {
-          "Avalonia": "11.3.18"
-        }
-      },
-      "HarfBuzzSharp.NativeAssets.Linux": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "3EZ1mpIiKWRLL5hUYA82ZHteeDIVaEA/Z0rA/wU6tjx6crcAkJnBPwDXZugBSfo8+J3EznvRJf49uMsqYfKrHg=="
-      },
-      "HarfBuzzSharp.NativeAssets.macOS": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "jbtCsgftcaFLCA13tVKo5iWdElJScrulLTKJre36O4YQTIlwDtPPqhRZNk+Y0vv4D1gxbscasGRucUDfS44ofQ=="
-      },
-      "HarfBuzzSharp.NativeAssets.Win32": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "UsJtQsfAJoFDZrXc4hCUfRPMqccfKZ0iumJ/upcUjz/cmsTgVFGNEL5yaJWmkqsuFYdMWbj/En5/kS4PFl9hBA=="
-      },
-      "SkiaSharp.NativeAssets.Linux": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "cWSaJKVPWAaT/WIn9c8T5uT/l4ETwHxNJTkEOtNKjphNo8AW6TF9O32aRkxqw3l8GUdUo66Bu7EiqtFh/XG0Zg==",
-        "dependencies": {
-          "SkiaSharp": "2.88.9"
-        }
-      },
-      "SkiaSharp.NativeAssets.macOS": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "Nv5spmKc4505Ep7oUoJ5vp3KweFpeNqxpyGDWyeEPTX2uR6S6syXIm3gj75dM0YJz7NPvcix48mR5laqs8dPuA=="
-      },
-      "SkiaSharp.NativeAssets.Win32": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "wb2kYgU7iy84nQLYZwMeJXixvK++GoIuECjU4ECaUKNuflyRlJKyiRhN1MAHswvlvzuvkrjRWlK0Za6+kYQK7w=="
-      },
       "Ultz.Native.GLFW": {
         "type": "Transitive",
         "resolved": "3.4.0",
@@ -435,52 +139,6 @@
       }
     },
     "net10.0/win-x64": {
-      "Avalonia.Angle.Windows.Natives": {
-        "type": "Transitive",
-        "resolved": "2.1.25547.20250602",
-        "contentHash": "ZL0VLc4s9rvNNFt19Pxm5UNAkmKNylugAwJPX9ulXZ6JWs/l6XZihPWWTyezaoNOVyEPU8YbURtW7XMAtqXH5A=="
-      },
-      "Avalonia.Native": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "8g53DROFW6wVJAnTsE1Iu5bdZO5r0oqxbdbMQODs1QDYCK2IU/y/x/vQVKCYOvqxl4tXkzU9tExv8XqSGPWthQ==",
-        "dependencies": {
-          "Avalonia": "11.3.18"
-        }
-      },
-      "HarfBuzzSharp.NativeAssets.Linux": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "3EZ1mpIiKWRLL5hUYA82ZHteeDIVaEA/Z0rA/wU6tjx6crcAkJnBPwDXZugBSfo8+J3EznvRJf49uMsqYfKrHg=="
-      },
-      "HarfBuzzSharp.NativeAssets.macOS": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "jbtCsgftcaFLCA13tVKo5iWdElJScrulLTKJre36O4YQTIlwDtPPqhRZNk+Y0vv4D1gxbscasGRucUDfS44ofQ=="
-      },
-      "HarfBuzzSharp.NativeAssets.Win32": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "UsJtQsfAJoFDZrXc4hCUfRPMqccfKZ0iumJ/upcUjz/cmsTgVFGNEL5yaJWmkqsuFYdMWbj/En5/kS4PFl9hBA=="
-      },
-      "SkiaSharp.NativeAssets.Linux": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "cWSaJKVPWAaT/WIn9c8T5uT/l4ETwHxNJTkEOtNKjphNo8AW6TF9O32aRkxqw3l8GUdUo66Bu7EiqtFh/XG0Zg==",
-        "dependencies": {
-          "SkiaSharp": "2.88.9"
-        }
-      },
-      "SkiaSharp.NativeAssets.macOS": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "Nv5spmKc4505Ep7oUoJ5vp3KweFpeNqxpyGDWyeEPTX2uR6S6syXIm3gj75dM0YJz7NPvcix48mR5laqs8dPuA=="
-      },
-      "SkiaSharp.NativeAssets.Win32": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "wb2kYgU7iy84nQLYZwMeJXixvK++GoIuECjU4ECaUKNuflyRlJKyiRhN1MAHswvlvzuvkrjRWlK0Za6+kYQK7w=="
-      },
       "Ultz.Native.GLFW": {
         "type": "Transitive",
         "resolved": "3.4.0",

src/SharpEmu.Core/Cpu/CpuDispatcher.cs

@@ -7,14 +7,11 @@ using SharpEmu.Core.Cpu.Native;
 using SharpEmu.Core.Loader;
 using SharpEmu.Core.Memory;
 using SharpEmu.HLE;
-using SharpEmu.Logging;
 
 namespace SharpEmu.Core.Cpu;
 
 public sealed class CpuDispatcher : ICpuDispatcher, IDisposable
 {
-    private static readonly SharpEmuLogger Log = SharpEmuLog.For("Dispatcher");
-
     private enum EntryFrameKind
     {
         ProcessEntry,
@@ -83,8 +80,8 @@ public sealed class CpuDispatcher : ICpuDispatcher, IDisposable
         string processImageName = "eboot.bin",
         CpuExecutionOptions executionOptions = default)
     {
-        Log.Debug("=== DispatchEntry START ===");
+        Console.Error.WriteLine("[DISPATCHER] === DispatchEntry START ===");
-        Log.Debug($"entryPoint=0x{entryPoint:X16}, generation={generation}");
+        Console.Error.WriteLine($"[DISPATCHER] entryPoint=0x{entryPoint:X16}, generation={generation}");
 
         try
         {
@@ -92,7 +89,8 @@ public sealed class CpuDispatcher : ICpuDispatcher, IDisposable
         }
         catch (Exception ex)
         {
-            Log.Critical($"FATAL EXCEPTION in DispatchEntry: {ex.GetType().Name}: {ex.Message}", ex);
+            Console.Error.WriteLine($"[DISPATCHER] FATAL EXCEPTION in DispatchEntry: {ex.GetType().Name}: {ex.Message}");
+            Console.Error.WriteLine($"[DISPATCHER] Stack trace: {ex.StackTrace}");
             throw;
         }
     }
@@ -105,8 +103,8 @@ public sealed class CpuDispatcher : ICpuDispatcher, IDisposable
         string moduleName = "module",
         CpuExecutionOptions executionOptions = default)
     {
-        Log.Debug("=== DispatchModuleInitializer START ===");
+        Console.Error.WriteLine("[DISPATCHER] === DispatchModuleInitializer START ===");
-        Log.Debug($"moduleInit=0x{entryPoint:X16}, generation={generation}, module={moduleName}");
+        Console.Error.WriteLine($"[DISPATCHER] moduleInit=0x{entryPoint:X16}, generation={generation}, module={moduleName}");
 
         try
         {
@@ -121,7 +119,8 @@ public sealed class CpuDispatcher : ICpuDispatcher, IDisposable
         }
         catch (Exception ex)
         {
-            Log.Critical($"FATAL EXCEPTION in DispatchModuleInitializer: {ex.GetType().Name}: {ex.Message}", ex);
+            Console.Error.WriteLine($"[DISPATCHER] FATAL EXCEPTION in DispatchModuleInitializer: {ex.GetType().Name}: {ex.Message}");
+            Console.Error.WriteLine($"[DISPATCHER] Stack trace: {ex.StackTrace}");
             throw;
         }
     }
@@ -135,7 +134,7 @@ public sealed class CpuDispatcher : ICpuDispatcher, IDisposable
         CpuExecutionOptions executionOptions = default,
         EntryFrameKind frameKind = EntryFrameKind.ProcessEntry)
     {
-        Log.Debug("DispatchEntryCore STARTING...");
+        Console.Error.WriteLine("[DISPATCHER] DispatchEntryCore STARTING...");
 
         LastEntryPoint = entryPoint;
         LastTrapInfo = null;
@@ -307,7 +306,7 @@ public sealed class CpuDispatcher : ICpuDispatcher, IDisposable
             LastMilestoneLog,
             Environment.NewLine,
             $"CpuEngine native-only failed: {backendError}");
-        Log.Error($"Native backend FAILED: {backendError}");
+        Console.Error.WriteLine($"[DISPATCHER] Native backend FAILED: {backendError}");
         return FailEarly(
             OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_IMPLEMENTED,
             CpuExitReason.NativeBackendUnavailable);
@@ -416,8 +415,8 @@ public sealed class CpuDispatcher : ICpuDispatcher, IDisposable
 
         const ulong entryParamsSize = 0x20;
         var entryParamsAddress = AlignDown(argv0Address - entryParamsSize, 16);
-        if (!context.TryWriteUInt32(entryParamsAddress + 0x00, 1) ||
+        if (!TryWriteUInt32(context, entryParamsAddress + 0x00, 1) ||
-            !context.TryWriteUInt32(entryParamsAddress + 0x04, 0) ||
+            !TryWriteUInt32(context, entryParamsAddress + 0x04, 0) ||
             !context.TryWriteUInt64(entryParamsAddress + 0x08, argv0Address) ||
             !context.TryWriteUInt64(entryParamsAddress + 0x10, 0) ||
             !context.TryWriteUInt64(entryParamsAddress + 0x18, 0))
@@ -457,6 +456,13 @@ public sealed class CpuDispatcher : ICpuDispatcher, IDisposable
         return value & ~(alignment - 1);
     }
 
+    private static bool TryWriteUInt32(CpuContext context, ulong address, uint value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+        BinaryPrimitives.WriteUInt32LittleEndian(buffer, value);
+        return context.Memory.TryWrite(address, buffer);
+    }
+
     private static string BuildEntryFrameDiagnostic(
         ulong entryPoint,
         CpuContext context,

src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.Diagnostics.cs

@@ -8,7 +8,6 @@ using System.Linq;
 using System.Runtime.InteropServices;
 using System.Threading;
 using SharpEmu.HLE;
-using SharpEmu.Logging;
 
 namespace SharpEmu.Core.Cpu.Native;
 
@@ -44,7 +43,7 @@ public sealed partial class DirectExecutionBackend
 		{
 			return;
 		}
-		Log.Info($"   Recent import calls ({_recentImportTraceCount}):");
+		Console.Error.WriteLine($"[LOADER][INFO]   Recent import calls ({_recentImportTraceCount}):");
 		int num = (_recentImportTraceWriteIndex - _recentImportTraceCount + _recentImportTrace.Length) % _recentImportTrace.Length;
 		for (int i = 0; i < _recentImportTraceCount; i++)
 		{
@@ -52,8 +51,8 @@ public sealed partial class DirectExecutionBackend
 			var entry = _recentImportTrace[num2];
 			if (!string.IsNullOrEmpty(entry.Nid))
 			{
-				Log.Info(
+				Console.Error.WriteLine(
-					$"     #{entry.DispatchIndex} nid={entry.Nid} ret=0x{entry.ReturnRip:X16} " +
+					$"[LOADER][INFO]     #{entry.DispatchIndex} nid={entry.Nid} ret=0x{entry.ReturnRip:X16} " +
 					$"rdi=0x{entry.Arg0:X16} rsi=0x{entry.Arg1:X16} rdx=0x{entry.Arg2:X16}");
 			}
 		}
@@ -92,12 +91,12 @@ public sealed partial class DirectExecutionBackend
 						list.Add(num7);
 						if (num2 < 32)
 						{
-							Log.Info($"Suspicious unresolved pointer: slot=0x{num7:X16} value=0x{value2:X16}");
+							Console.Error.WriteLine($"[LOADER][INFO] Suspicious unresolved pointer: slot=0x{num7:X16} value=0x{value2:X16}");
 							num2++;
 						}
 						if (num >= 16384)
 						{
-							Log.Warning($"Suspicious unresolved pointer scan reached cap ({16384}); truncating.");
+							Console.Error.WriteLine($"[LOADER][WARNING] Suspicious unresolved pointer scan reached cap ({16384}); truncating.");
 							return list;
 						}
 					}
@@ -107,7 +106,7 @@ public sealed partial class DirectExecutionBackend
 		}
 		if (num != 0)
 		{
-			Log.Warning($"Suspicious unresolved pointer hits: {num}");
+			Console.Error.WriteLine($"[LOADER][WARNING] Suspicious unresolved pointer hits: {num}");
 		}
 		return list;
 	}
@@ -122,18 +121,18 @@ public sealed partial class DirectExecutionBackend
 		Span<byte> destination = stackalloc byte[128];
 		if (!cpuContext.Memory.TryRead(returnRip, destination))
 		{
-			Log.Debug($"Import#{dispatchIndex} return-rip probe: unreadable @0x{returnRip:X16}");
+			Console.Error.WriteLine($"[LOADER][TRACE] Import#{dispatchIndex} return-rip probe: unreadable @0x{returnRip:X16}");
 			return;
 		}
 		string value = BitConverter.ToString(destination.ToArray()).Replace("-", " ");
-		Log.Debug($"Import#{dispatchIndex} return-rip bytes @0x{returnRip:X16}: {value}");
+		Console.Error.WriteLine($"[LOADER][TRACE] Import#{dispatchIndex} return-rip bytes @0x{returnRip:X16}: {value}");
 		if (destination[0] == byte.MaxValue && (destination[1] == 21 || destination[1] == 37))
 		{
 			int num = BitConverter.ToInt32(destination.Slice(2, 4));
 			ulong num2 = returnRip + 6 + (ulong)num;
 			if (cpuContext.TryReadUInt64(num2, out var value2))
 			{
-				Log.Debug($"Import#{dispatchIndex} return-rip slot: [0x{num2:X16}] = 0x{value2:X16}");
+				Console.Error.WriteLine($"[LOADER][TRACE] Import#{dispatchIndex} return-rip slot: [0x{num2:X16}] = 0x{value2:X16}");
 			}
 		}
 		if (destination[0] == 72 && destination[1] == 139 && destination[2] == 5)
@@ -142,7 +141,7 @@ public sealed partial class DirectExecutionBackend
 			ulong num4 = returnRip + 7 + (ulong)num3;
 			if (cpuContext.TryReadUInt64(num4, out var value3))
 			{
-				Log.Debug($"Import#{dispatchIndex} return-rip mov-slot: [0x{num4:X16}] = 0x{value3:X16}");
+				Console.Error.WriteLine($"[LOADER][TRACE] Import#{dispatchIndex} return-rip mov-slot: [0x{num4:X16}] = 0x{value3:X16}");
 			}
 		}
 		for (int i = 0; i + 6 <= destination.Length; i++)
@@ -154,7 +153,7 @@ public sealed partial class DirectExecutionBackend
 				ulong num7 = num6 + 6 + (ulong)num5;
 				if (cpuContext.TryReadUInt64(num7, out var value4))
 				{
-					Log.Debug($"Import#{dispatchIndex} near-indirect @{num6:X16}: slot=0x{num7:X16} val=0x{value4:X16}");
+					Console.Error.WriteLine($"[LOADER][TRACE] Import#{dispatchIndex} near-indirect @{num6:X16}: slot=0x{num7:X16} val=0x{value4:X16}");
 				}
 			}
 		}
@@ -169,7 +168,7 @@ public sealed partial class DirectExecutionBackend
 			int rel32 = BitConverter.ToInt32(destination.Slice(i + 1, 4));
 			ulong callRip = returnRip + (ulong)i;
 			ulong target = unchecked((ulong)((long)(callRip + 5) + rel32));
-			Log.Debug($"Import#{dispatchIndex} near-call @{callRip:X16}: target=0x{target:X16}");
+			Console.Error.WriteLine($"[LOADER][TRACE] Import#{dispatchIndex} near-call @{callRip:X16}: target=0x{target:X16}");
 			for (int importIndex = 0; importIndex < _importEntries.Length; importIndex++)
 			{
 				if (_importEntries[importIndex].Address != target)
@@ -180,21 +179,21 @@ public sealed partial class DirectExecutionBackend
 				string nid = _importEntries[importIndex].Nid;
 				if (_moduleManager.TryGetExport(nid, out var export))
 				{
-					Log.Debug(
+					Console.Error.WriteLine(
-						$"Import#{dispatchIndex} near-call import: index={importIndex} {export.LibraryName}:{export.Name} ({nid})");
+						$"[LOADER][TRACE] Import#{dispatchIndex} near-call import: index={importIndex} {export.LibraryName}:{export.Name} ({nid})");
 				}
 				else
 				{
-					Log.Debug(
+					Console.Error.WriteLine(
-						$"Import#{dispatchIndex} near-call import: index={importIndex} nid={nid}");
+						$"[LOADER][TRACE] Import#{dispatchIndex} near-call import: index={importIndex} nid={nid}");
 				}
 				break;
 			}
 
 			if (cpuContext.Memory.TryRead(target, targetBytes))
 			{
-				Log.Debug(
+				Console.Error.WriteLine(
-					$"Import#{dispatchIndex} near-call target bytes @0x{target:X16}: " +
+					$"[LOADER][TRACE] Import#{dispatchIndex} near-call target bytes @0x{target:X16}: " +
 					BitConverter.ToString(targetBytes.ToArray()).Replace("-", " "));
 				if (targetBytes[0] == 0xFF && targetBytes[1] == 0x25)
 				{
@@ -202,8 +201,8 @@ public sealed partial class DirectExecutionBackend
 					ulong slot = unchecked((ulong)((long)(target + 6) + slotRel32));
 					if (cpuContext.TryReadUInt64(slot, out var slotTarget))
 					{
-						Log.Debug(
+						Console.Error.WriteLine(
-							$"Import#{dispatchIndex} near-call PLT slot: [0x{slot:X16}] = 0x{slotTarget:X16}");
+							$"[LOADER][TRACE] Import#{dispatchIndex} near-call PLT slot: [0x{slot:X16}] = 0x{slotTarget:X16}");
 						for (int importIndex = 0; importIndex < _importEntries.Length; importIndex++)
 						{
 							if (_importEntries[importIndex].Address != slotTarget)
@@ -214,13 +213,13 @@ public sealed partial class DirectExecutionBackend
 							string nid = _importEntries[importIndex].Nid;
 							if (_moduleManager.TryGetExport(nid, out var export))
 							{
-								Log.Debug(
+								Console.Error.WriteLine(
-									$"Import#{dispatchIndex} near-call PLT import: index={importIndex} {export.LibraryName}:{export.Name} ({nid})");
+									$"[LOADER][TRACE] Import#{dispatchIndex} near-call PLT import: index={importIndex} {export.LibraryName}:{export.Name} ({nid})");
 							}
 							else
 							{
-								Log.Debug(
+								Console.Error.WriteLine(
-									$"Import#{dispatchIndex} near-call PLT import: index={importIndex} nid={nid}");
+									$"[LOADER][TRACE] Import#{dispatchIndex} near-call PLT import: index={importIndex} nid={nid}");
 							}
 							break;
 						}

src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.Exceptions.cs

@@ -103,15 +103,6 @@ public sealed partial class DirectExecutionBackend
 			ulong rip = ReadCtxU64(contextRecord, 248);
 			ulong rsp = ReadCtxU64(contextRecord, 152);
 
-			// Thread-mode probe: a hardware exception raised while this thread is inside
-			// the managed import gateway means the VEH->managed reentry happened from
-			// cooperative GC mode — a ReversePInvokeBadTransition candidate.
-			if (LogThreadMode && _threadModeGatewayDepth > 0)
-			{
-				TraceThreadMode(
-					$"veh_in_gateway code=0x{exceptionCode:X8} rip=0x{rip:X16} gateway_depth={_threadModeGatewayDepth}");
-			}
-
 			if (exceptionCode == 3221225477u && TryHandleLazyCommittedPage(exceptionRecord, rip, rsp))
 			{
 				return -1;

src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.Imports.cs

@@ -19,16 +19,6 @@ public sealed partial class DirectExecutionBackend
 
 	private static ulong ImportDispatchGatewayManaged(nint backendHandle, int importIndex, nint argPackPtr)
 	{
-		if (LogThreadMode)
-		{
-			_threadModeGatewayCalls++;
-			_threadModeGatewayDepth++;
-			if (!_threadModeGatewayFirstLogged)
-			{
-				_threadModeGatewayFirstLogged = true;
-				TraceThreadMode($"gateway_first import={importIndex} total={_threadModeGatewayCalls}");
-			}
-		}
 		try
 		{
 			if (!(GCHandle.FromIntPtr(backendHandle).Target is DirectExecutionBackend directExecutionBackend))
@@ -46,13 +36,6 @@ public sealed partial class DirectExecutionBackend
 				$"[LOADER][ERROR] ImportDispatchGatewayManaged exception: {ex.GetType().Name}: {ex.Message}");
 			return 18446744071562199298uL;
 		}
-		finally
-		{
-			if (LogThreadMode)
-			{
-				_threadModeGatewayDepth--;
-			}
-		}
 	}
 
 	private unsafe static int RawVectoredHandlerManaged(void* exceptionInfo)
@@ -86,12 +69,6 @@ public sealed partial class DirectExecutionBackend
 			WriteCtxU64(contextRecord, 152, nextRsp);
 			WriteCtxU64(contextRecord, 248, returnRip);
 			Interlocked.Increment(ref _rawSentinelRecoveries);
-			if (LogThreadMode)
-			{
-				TraceThreadMode(
-					$"sentinel_recover rip=0x{value:X16} -> 0x{returnRip:X16} rsp=0x{rsp:X16} -> 0x{nextRsp:X16} " +
-					$"gateway_depth={_threadModeGatewayDepth}");
-			}
 			return -1;
 		}
 		return 0;
@@ -122,12 +99,6 @@ public sealed partial class DirectExecutionBackend
 			Console.Error.WriteLine($"[LOADER][TRACE] Raw sentinel recoveries: {num2} (last import index={importIndex})");
 			_lastReportedRawSentinelRecoveries = num2;
 		}
-		// Leaf imports take a scalar-only fast path that reads its own operands and
-		// intentionally bypasses the SysV variadic XMM marshalling below. This is safe
-		// only while the leaf set contains no float-variadic or float-returning function.
-		// The constraint and the audited list live on IsLeafImport — do not add a
-		// function that consumes xmm0-7 args or returns in xmm0 to the leaf set;
-		// such functions must stay on the full gateway path below.
 		if (IsLeafImport(importStubEntry.Nid) &&
 			TryDispatchLeafImport(cpuContext, importStubEntry, argPackPtr, num, out var leafResult))
 		{
@@ -147,17 +118,10 @@ public sealed partial class DirectExecutionBackend
 		cpuContext[CpuRegister.R13] = *(ulong*)(argPackPtr + 72);
 		cpuContext[CpuRegister.R14] = *(ulong*)(argPackPtr + 80);
 		cpuContext[CpuRegister.R15] = *(ulong*)(argPackPtr + 88);
-		// The trampoline spills the SysV variadic XMM save area (xmm0..xmm7) into the
+		cpuContext.SetXmmRegister(
-		// 0x80 bytes immediately below the GP argpack, so variadic float args (printf
+			0,
-		// %f, and powf/logf inputs) reach the handler. xmm{i} is at argPackPtr-0x80+i*16.
+			*(ulong*)(argPackPtr - 16),
-		for (var xmmIndex = 0; xmmIndex < 8; xmmIndex++)
+			*(ulong*)(argPackPtr - 8));
-		{
-			var xmmSlot = argPackPtr - 0x80 + (xmmIndex * 16);
-			cpuContext.SetXmmRegister(
-				xmmIndex,
-				*(ulong*)xmmSlot,
-				*(ulong*)(xmmSlot + 8));
-		}
 		cpuContext[CpuRegister.Rsp] = (ulong)argPackPtr + 96uL;
 		ulong value = cpuContext[CpuRegister.Rdi];
 		ulong value2 = cpuContext[CpuRegister.Rsi];
@@ -227,17 +191,6 @@ public sealed partial class DirectExecutionBackend
 			cpuContext[CpuRegister.Rax] = 1uL;
 			return 1uL;
 		}
-		// Backend teardown in progress: unwind this worker to the host instead of
-		// dispatching. RunGuestThread parks it as Blocked with no wake handler, its
-		// host thread exits, and RequestGuestThreadTeardown can finish before any
-		// executable memory is freed.
-		if (isGuestWorker &&
-			_guestTeardownRequested &&
-			TryYieldGuestThreadToHostStub(argPackPtr, num, num7, importStubEntry.Nid, "backend teardown"))
-		{
-			cpuContext[CpuRegister.Rax] = 0uL;
-			return 0uL;
-		}
 		bool flag0 = ShouldSuppressStrlenTrace(importStubEntry.Nid);
 		bool flag = num7 >= 2156221920u && num7 <= 2156225024u;
 		bool flag2 = num7 >= 2156351360u && num7 <= 2156352080u;
@@ -385,15 +338,10 @@ public sealed partial class DirectExecutionBackend
 				{
 					orbisGen2Result = DispatchBootstrapBridge();
 				}
-				else if (string.Equals(importStubEntry.Nid, RuntimeStubNids.KernelDynlibDlsym, StringComparison.Ordinal) ||
+				else if (string.Equals(importStubEntry.Nid, RuntimeStubNids.KernelDynlibDlsym, StringComparison.Ordinal))
-					string.Equals(importStubEntry.Nid, "LwG8g3niqwA", StringComparison.Ordinal))
 				{
 					orbisGen2Result = DispatchKernelDynlibDlsym();
 				}
-				else if (string.Equals(importStubEntry.Nid, "r8mvOaWdi28", StringComparison.Ordinal))
-				{
-					orbisGen2Result = DispatchIl2CppApiLookupSymbol();
-				}
 				else if (importStubEntry.Export is { } cachedExport &&
 					(cachedExport.Target & cpuContext.TargetGeneration) != 0)
 				{
@@ -405,21 +353,12 @@ public sealed partial class DirectExecutionBackend
 					}
 					orbisGen2Result = (OrbisGen2Result)returnValue;
 				}
-                else if (importStubEntry.Export is { } mismatchedExport)
+				else
-                {
+				{
-                    dispatchResolved = true;
+					dispatchResolved = false;
-                    orbisGen2Result = OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_IMPLEMENTED;
+					orbisGen2Result = OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
-                    cpuContext[CpuRegister.Rax] = unchecked((ulong)(int)orbisGen2Result);
+					cpuContext[CpuRegister.Rax] = unchecked((ulong)(int)orbisGen2Result);
-                    Console.Error.WriteLine(
+				}
-                        $"[LOADER][WARN] Import#{num} not implemented for generation {cpuContext.TargetGeneration}: " +
-                        $"nid={importStubEntry.Nid} targets={mismatchedExport.Target} ret=0x{num7:X16}");
-                }
-                else
-                {
-                    dispatchResolved = false;
-                    orbisGen2Result = OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
-                    cpuContext[CpuRegister.Rax] = unchecked((ulong)(int)orbisGen2Result);
-                }
 			}
 			finally
 			{
@@ -538,13 +477,6 @@ public sealed partial class DirectExecutionBackend
 					Console.Error.Flush();
 				}
 			}
-			// Publish the handler's XMM0 back into the argpack's xmm0 save slot; the
-			// trampoline epilogue reloads it into the guest's XMM0, delivering float/double
-			// return values (powf/logf/wcstod). Harmless for int/pointer returns (XMM is
-			// volatile across a SysV call, so the guest never relies on a preserved XMM0).
-			cpuContext.GetXmmRegister(0, out var returnXmm0Low, out var returnXmm0High);
-			*(ulong*)(argPackPtr - 0x80) = returnXmm0Low;
-			*(ulong*)(argPackPtr - 0x80 + 8) = returnXmm0High;
 			return cpuContext[CpuRegister.Rax];
 		}
 		catch (Exception ex)
@@ -676,13 +608,6 @@ public sealed partial class DirectExecutionBackend
 		return true;
 	}
 
-	// Subset of the leaf set that additionally skips the import-call-frame
-	// bookkeeping. The same scalar-only (no XMM args, no XMM return) constraint
-	// as IsLeafImport applies — see the note there before adding entries.
-	// NOTE: this filter is only consulted after IsLeafImport accepts the NID;
-	// entries listed here but not in IsLeafImport (scePadRead, scePadOpen,
-	// sceUserServiceGetEvent, sceUserServiceGetPlatformPrivacySetting,
-	// pthread_mutex_trylock) currently take the full gateway path.
 	private static bool IsNoBlockLeafImport(string nid) =>
 		nid is
 			"8aI7R7WaOlc" or // sceAmprCommandBufferConstructor
@@ -703,57 +628,25 @@ public sealed partial class DirectExecutionBackend
 			"ASoW5WE-UPo" or // sceKernelAprSubmitCommandBufferAndGetResult
 			"rqwFKI4PAiM" or // sceKernelAprWaitCommandBuffer
 			"eE4Szl8sil8" or // sceKernelAprSubmitCommandBuffer
-			"qvMUCyyaCSI" or // sceKernelAprSubmitCommandBufferAndGetId
+			"qvMUCyyaCSI";   // sceKernelAprSubmitCommandBufferAndGetId
-			"Q2V+iqvjgC0" or // vsnprintf
-			"AV6ipCNa4Rw" or // strcasecmp
-			"q1cHNfGycLI" or // scePadRead
-			"xk0AcarP3V4" or // scePadOpen
-			"yH17Q6NWtVg" or // sceUserServiceGetEvent
-			"D-CzAxQL0XI" or // sceUserServiceGetPlatformPrivacySetting
-			"K-jXhbt2gn4";   // pthread_mutex_trylock (scePthreadMutexTrylock is upoVrzMHFeE)
 
 	private bool ShouldLogImportResult(string nid, OrbisGen2Result result)
 	{
-		var resultValue = unchecked((int)result);
-		if (resultValue > 0)
-		{
-			return false;
-		}
-
 		var expectedFileProbeMiss =
 			result == OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND &&
 			IsExpectedFileProbeNotFoundNid(nid);
 		var expectedTimedWaitTimeout =
 			string.Equals(nid, "27bAgiJmOh0", StringComparison.Ordinal) &&
 			unchecked((int)result) == 60;
-		var expectedEqueueTimeout =
-			string.Equals(nid, "fzyMKs9kim0", StringComparison.Ordinal) &&
-			result == OrbisGen2Result.ORBIS_GEN2_ERROR_TIMED_OUT;
 		var expectedMutexTrylockBusy =
 			string.Equals(nid, "K-jXhbt2gn4", StringComparison.Ordinal) &&
 			result == OrbisGen2Result.ORBIS_GEN2_ERROR_BUSY;
-		var expectedUserServiceNoEvent =
+		if (!expectedFileProbeMiss && !expectedTimedWaitTimeout && !expectedMutexTrylockBusy)
-			string.Equals(nid, "yH17Q6NWtVg", StringComparison.Ordinal) &&
-			resultValue == unchecked((int)0x80960007);
-		var expectedPrivacyInvalidParameter =
-			string.Equals(nid, "D-CzAxQL0XI", StringComparison.Ordinal) &&
-			resultValue == unchecked((int)0x80960009);
-		if (!expectedFileProbeMiss &&
-			!expectedTimedWaitTimeout &&
-			!expectedEqueueTimeout &&
-			!expectedMutexTrylockBusy &&
-			!expectedUserServiceNoEvent &&
-			!expectedPrivacyInvalidParameter)
 		{
 			return true;
 		}
 
-		if (!ShouldLogExpectedImportResults())
+		var key = nid + "\0" + (int)result;
-		{
-			return false;
-		}
-
-		var key = nid + "\0" + resultValue;
 		int count;
 		lock (_importResultLogSampleGate)
 		{
@@ -765,53 +658,28 @@ public sealed partial class DirectExecutionBackend
 		return count <= 8 || count % 10000 == 0;
 	}
 
-	private static bool ShouldLogExpectedImportResults() =>
-		string.Equals(
-			Environment.GetEnvironmentVariable("SHARPEMU_LOG_EXPECTED_IMPORT_RESULTS"),
-			"1",
-			StringComparison.Ordinal);
-
 	private static bool IsExpectedFileProbeNotFoundNid(string nid) =>
 		nid is
 			"eV9wAD2riIA" or // sceKernelStat
 			"1G3lF1Gg1k8" or // sceKernelOpen
 			"gEpBkcwxUjw";   // sceKernelAprResolveFilepathsToIdsAndFileSizes
 
-	// LEAF-IMPORT REGISTRATION — scalar-only constraint.
-	//
-	// TryDispatchLeafImport is a fast path that never copies the trampoline's XMM
-	// save area into CpuContext and never publishes an XMM0 return back to the
-	// guest (see DispatchImport). Every NID listed here must therefore satisfy BOTH:
-	//   1. no float/double parameters (nothing passed in xmm0..xmm7), and
-	//   2. no float/double return value (nothing returned in xmm0).
-	// Integer/pointer arguments and returns only. va_list-based functions
-	// (vsnprintf) are safe: SysV va_list floats are read from the caller-built
-	// reg_save_area in guest memory, not from the callee's incoming XMM registers.
-	//
-	// If a function that consumes XMM arguments or returns in xmm0 (e.g. powf,
-	// logf, wcstod, sceVideoOutColorSettingsSetGamma_) is ever added here, its
-	// float arguments will silently arrive stale and its return value will be
-	// dropped. Such functions must stay on the full gateway path — do not list them.
-	//
-	// Audited 2026-07-11 (PR #59): every NID below maps to a registered
-	// SysAbiExport whose handler neither reads nor writes CpuContext XMM state
-	// and whose known guest signature is integer/pointer only.
 	private bool IsLeafImport(string nid)
 	{
-		if (nid == "1jfXLRVzisc") // sceKernelUsleep
+		if (nid == "1jfXLRVzisc")
 		{
 			return !_logUsleep;
 		}
 
 		return nid is
-			"9UK1vLZQft4" or // scePthreadMutexLock
+			"9UK1vLZQft4" or
-			"tn3VlD0hG60" or // scePthreadMutexUnlock
+			"tn3VlD0hG60" or
-			"7H0iTOciTLo" or // pthread_mutex_lock
+			"7H0iTOciTLo" or
-			"2Z+PpY6CaJg" or // pthread_mutex_unlock
+			"2Z+PpY6CaJg" or
-			"8aI7R7WaOlc" or // sceAmprCommandBufferConstructor
+			"8aI7R7WaOlc" or
 			"zgXifHT9ErY" or // sceVideoOutIsFlipPending
 			"V++UgBtQhn0" or // sceAgcGetDataPacketPayloadAddress
-			"qj7QZpgr9Uw" or // sceAgcUnknownQj7QZpgr9Uw (unknown NID; observed scalar: command-buffer pointer in, packet address out)
+			"qj7QZpgr9Uw" or // Gen5 graphics type-2 packet
 			"LtTouSCZjHM" or // sceAgcCbNop
 			"k3GhuSNmBLU" or // sceAgcCbDispatch
 			"UZbQjYAwwXM" or // sceAgcCbSetShRegistersDirect
@@ -834,24 +702,24 @@ public sealed partial class DirectExecutionBackend
 			"IxYiarKlXxM" or // sceAgcDmaDataPatchSetDstAddressOrOffset
 			"3KDcnM3lrcU" or // sceAgcWaitRegMemPatchAddress
 			"0fWWK5uG9rQ" or // sceAgcQueueEndOfPipeActionPatchAddress
-			"a8uLzYY--tM" or // sceAmprAprCommandBufferConstructor
+			"a8uLzYY--tM" or
-			"Qs1xtplKo0U" or // sceAmprAprCommandBufferDestructor
+			"Qs1xtplKo0U" or
-			"GuchCTefuZw" or // sceAmprCommandBufferDestructor
+			"GuchCTefuZw" or
-			"N-FSPA4S3nI" or // sceAmprCommandBufferSetBuffer
+			"N-FSPA4S3nI" or
-			"baQO9ez2gL4" or // sceAmprCommandBufferReset
+			"baQO9ez2gL4" or
-			"ULvXMDz56po" or // sceAmprCommandBufferClearBuffer
+			"ULvXMDz56po" or
-			"mQ16-QdKv7k" or // sceAmprAprCommandBufferReadFile
+			"mQ16-QdKv7k" or
-			"vWU-odnS+fU" or // sceAmprMeasureCommandSizeReadFile
+			"vWU-odnS+fU" or
-			"sSAUCCU1dv4" or // sceAmprMeasureCommandSizeWriteKernelEventQueue_04_00
+			"sSAUCCU1dv4" or
-			"C+IEj+BsAFM" or // sceAmprMeasureCommandSizeWriteAddressOnCompletion
+			"C+IEj+BsAFM" or
-			"tZDDEo2tE5k" or // sceAmprCommandBufferGetSize
+			"tZDDEo2tE5k" or
-			"GnxKOHEawhk" or // sceAmprCommandBufferGetCurrentOffset
+			"GnxKOHEawhk" or
-			"H896Pt-yB4I" or // sceAmprCommandBufferWriteKernelEventQueue_04_00
+			"H896Pt-yB4I" or
-			"sJXyWHjP-F8" or // sceAmprCommandBufferWriteAddressOnCompletion
+			"sJXyWHjP-F8" or
-			"ASoW5WE-UPo" or // sceKernelAprSubmitCommandBufferAndGetResult
+			"ASoW5WE-UPo" or
-			"rqwFKI4PAiM" or // sceKernelAprWaitCommandBuffer
+			"rqwFKI4PAiM" or
-			"eE4Szl8sil8" or // sceKernelAprSubmitCommandBuffer
+			"eE4Szl8sil8" or
-			"qvMUCyyaCSI" or // sceKernelAprSubmitCommandBufferAndGetId
+			"qvMUCyyaCSI" or
 			"Vo5V8KAwCmk" or // sceSystemServiceHideSplashScreen
 			"TywrFKCoLGY" or // sceSaveDataInitialize3
 			"dyIhnXq-0SM" or // sceSaveDataDirNameSearch
@@ -870,7 +738,6 @@ public sealed partial class DirectExecutionBackend
 			"WkkeywLJcgU" or // wcslen
 			"Ovb2dSJOAuE" or // strcmp
 			"aesyjrHVWy4" or // strncmp
-			"AV6ipCNa4Rw" or // strcasecmp
 			"pNtJdE3x49E" or // wcscmp
 			"fV2xHER+bKE" or // wcscoll
 			"E8wCoUEbfzk" or // wcsncmp
@@ -896,12 +763,7 @@ public sealed partial class DirectExecutionBackend
 			"vz+pg2zdopI" or // sceKernelGetEventUserData
 			"mJ7aghmgvfc" or // sceKernelGetEventId
 			"23CPPI1tyBY" or // sceKernelGetEventFilter
-			"kwGyyjohI50" or // sceKernelGetEventData
+			"kwGyyjohI50";   // sceKernelGetEventData
-			// _Getpctype is a per-character ctype table lookup; the embedded mcpp preprocessor
-			// re-fetches the table pointer on every isdigit()/isalpha() check, so classifying a
-			// large input legitimately calls it hundreds of thousands of times back-to-back -
-			// real, finite work that would otherwise trip the loop guard.
-			"sUP1hBaouOw";   // _Getpctype
 	}
 
 	private long NextImportDispatchIndex()
@@ -1318,11 +1180,8 @@ public sealed partial class DirectExecutionBackend
 			cpuContext[CpuRegister.Rax] = 18446744073709551615uL;
 			return OrbisGen2Result.ORBIS_GEN2_OK;
 		}
-		if (!TryResolveRuntimeSymbolAddress(symbolName, out var resolvedAddress) &&
+		if (!TryResolveRuntimeSymbolAddress(symbolName, out var resolvedAddress))
-			!TryResolveRuntimeSymbolAlias(symbolName, out resolvedAddress))
 		{
-			Console.Error.WriteLine(
-				$"[LOADER][WARN] sceKernelDlsym failed: handle=0x{cpuContext[CpuRegister.Rdi]:X} symbol='{symbolName}'");
 			cpuContext[CpuRegister.Rax] = 18446744073709551615uL;
 			return OrbisGen2Result.ORBIS_GEN2_OK;
 		}
@@ -1335,62 +1194,6 @@ public sealed partial class DirectExecutionBackend
 		return OrbisGen2Result.ORBIS_GEN2_OK;
 	}
 
-	private bool TryResolveRuntimeSymbolAlias(string symbolName, out ulong address)
-	{
-		address = 0;
-		var alias = symbolName switch
-		{
-			"scriptingGetMem" => "malloc",
-			"scriptingFreeMem" => "free",
-			"scriptingRealloc" => "realloc",
-			"scriptingCalloc" => "calloc",
-			_ => null,
-		};
-
-		return alias != null && TryResolveRuntimeSymbolAddress(alias, out address);
-	}
-
-	private OrbisGen2Result DispatchIl2CppApiLookupSymbol()
-	{
-		var cpuContext = ActiveCpuContext;
-		if (cpuContext == null)
-		{
-			return OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-		}
-
-		var symbolNameAddress = cpuContext[CpuRegister.Rdi];
-		var outputAddress = cpuContext[CpuRegister.Rsi];
-		if (!TryReadAsciiZ(symbolNameAddress, 512, out var symbolName) ||
-			outputAddress == 0 ||
-			!TryResolveIl2CppApiAddress(symbolName, out var resolvedAddress) ||
-			!TryWriteUInt64Compat(outputAddress, resolvedAddress))
-		{
-			Console.Error.WriteLine(
-				$"[LOADER][WARN] il2cpp_api_lookup_symbol failed: name='{symbolName}' out=0x{outputAddress:X16}");
-			if (outputAddress != 0)
-			{
-				_ = TryWriteUInt64Compat(outputAddress, 0);
-			}
-
-			cpuContext[CpuRegister.Rax] = ulong.MaxValue;
-			return OrbisGen2Result.ORBIS_GEN2_OK;
-		}
-
-		cpuContext[CpuRegister.Rax] = 0;
-		return OrbisGen2Result.ORBIS_GEN2_OK;
-	}
-
-	private bool TryResolveIl2CppApiAddress(string symbolName, out ulong address)
-	{
-		if (TryResolveRuntimeSymbolAddress(symbolName, out address))
-		{
-			return true;
-		}
-
-		return Aerolib.Instance.TryGetByExportName(symbolName, out var symbol) &&
-			TryResolveRuntimeSymbolAddress(symbol.Nid, out address);
-	}
-
 	private OrbisGen2Result DispatchBootstrapBridge()
 	{
 		var cpuContext = ActiveCpuContext;

src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.NativeWorker.cs

@@ -1,582 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using System;
-using System.Collections.Generic;
-using System.Runtime.InteropServices;
-using System.Threading;
-using SharpEmu.HLE;
-
-namespace SharpEmu.Core.Cpu.Native;
-
-public sealed partial class DirectExecutionBackend
-{
-	// Guest entry stubs must not run above CLR-managed frames on a CLR-created thread:
-	// the suspension/stack-walk machinery then has to traverse a frame chain that is
-	// interleaved with guest stubs carrying no CLR unwind info, and any window in which
-	// the thread-mode bookkeeping disagrees with the actual stack (import dispatch, VEH
-	// redirection) fail-fasts the runtime — the audio_output_thread ~7th-cycle
-	// "attempted to call a UnmanagedCallersOnly method from managed code" crash.
-	//
-	// Guest execution therefore runs on dedicated raw OS threads whose run loop is
-	// emitted native code. While guest code executes there is not a single managed
-	// frame on the thread and it sits in preemptive mode, so the GC ignores it
-	// entirely. The only managed activity on the thread is the reverse-P/Invoke import
-	// dispatch and the per-run prologue/epilogue, which the CLR supports on foreign
-	// threads (lazy attach, preemptive between calls). The managed orchestrator
-	// (RunGuestThread / the main execution thread) parks in a preemptive wait for the
-	// duration of the run, so its own frame chain is never walked across guest frames.
-	private static readonly bool NativeGuestWorkersDisabled =
-		string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_DISABLE_NATIVE_GUEST_WORKERS"), "1", StringComparison.Ordinal);
-
-	private readonly object _nativeWorkerGate = new();
-	private readonly List<NativeGuestExecutor> _allNativeWorkers = new();
-	private readonly Stack<NativeGuestExecutor> _idleNativeWorkers = new();
-	private bool _nativeWorkersDisposed;
-	private int _nativeWorkerCreationFailedLogged;
-
-	private const uint StackSizeParamIsAReservation = 0x00010000u;
-
-	[DllImport("kernel32.dll", SetLastError = true)]
-	private static extern nint CreateThread(
-		nint lpThreadAttributes,
-		nuint dwStackSize,
-		nint lpStartAddress,
-		nint lpParameter,
-		uint dwCreationFlags,
-		out uint lpThreadId);
-
-	[DllImport("kernel32.dll", SetLastError = true)]
-	private static extern uint WaitForSingleObject(nint hHandle, uint dwMilliseconds);
-
-	// Runs an emitted guest entry stub. Preferred path is a pooled native worker
-	// thread; falls back to the historical inline calli (guest frames above this
-	// thread's managed frames) when workers are disabled or unavailable.
-	//
-	// Callers set the Active* thread-statics before emitting the stub and read the
-	// yield/forced-exit flags right after this returns, so the worker outcome is
-	// copied back into this thread's statics before returning.
-	private unsafe int RunGuestEntryStub(void* entryStub, ulong hostRspSlot)
-	{
-		var worker = RentNativeGuestExecutor();
-		if (worker is null)
-		{
-			TlsSetValue(_hostRspSlotTlsIndex, (nint)hostRspSlot);
-			return CallNativeEntry(entryStub);
-		}
-		try
-		{
-			var state = _activeGuestThreadState;
-			var nativeReturn = worker.Run(
-				_activeCpuContext!,
-				state,
-				GuestThreadExecution.CurrentGuestThreadHandle,
-				_activeEntryReturnSentinelRip,
-				_activeGuestReturnSlotAddress,
-				(nint)hostRspSlot,
-				(nint)entryStub,
-				state?.AffinityMask ?? 0,
-				out var yieldRequested,
-				out var yieldReason,
-				out var forcedExit);
-			_activeGuestThreadYieldRequested = yieldRequested;
-			_activeGuestThreadYieldReason = yieldReason;
-			_activeForcedGuestExit = forcedExit;
-			return nativeReturn;
-		}
-		finally
-		{
-			ReturnNativeGuestExecutor(worker);
-		}
-	}
-
-	private NativeGuestExecutor? RentNativeGuestExecutor()
-	{
-		if (NativeGuestWorkersDisabled)
-		{
-			return null;
-		}
-		lock (_nativeWorkerGate)
-		{
-			if (_nativeWorkersDisposed)
-			{
-				return null;
-			}
-			if (_idleNativeWorkers.Count > 0)
-			{
-				return _idleNativeWorkers.Pop();
-			}
-		}
-		var worker = NativeGuestExecutor.TryCreate(this);
-		if (worker is null)
-		{
-			if (Interlocked.Exchange(ref _nativeWorkerCreationFailedLogged, 1) == 0)
-			{
-				Console.Error.WriteLine(
-					"[LOADER][WARN] Failed to create a native guest worker thread; falling back to inline guest execution.");
-			}
-			return null;
-		}
-		lock (_nativeWorkerGate)
-		{
-			if (_nativeWorkersDisposed)
-			{
-				worker.Dispose();
-				return null;
-			}
-			_allNativeWorkers.Add(worker);
-		}
-		return worker;
-	}
-
-	private void ReturnNativeGuestExecutor(NativeGuestExecutor worker)
-	{
-		lock (_nativeWorkerGate)
-		{
-			if (!_nativeWorkersDisposed)
-			{
-				_idleNativeWorkers.Push(worker);
-				return;
-			}
-		}
-		worker.Dispose();
-	}
-
-	private void DisposeNativeGuestExecutors()
-	{
-		NativeGuestExecutor[] workers;
-		lock (_nativeWorkerGate)
-		{
-			if (_nativeWorkersDisposed)
-			{
-				return;
-			}
-			_nativeWorkersDisposed = true;
-			workers = _allNativeWorkers.ToArray();
-			_allNativeWorkers.Clear();
-			_idleNativeWorkers.Clear();
-		}
-		foreach (var worker in workers)
-		{
-			worker.Dispose();
-		}
-	}
-
-	// A pooled raw OS thread that executes guest entry stubs. The run loop is emitted
-	// native code (no CLR unwind info required — nothing ever unwinds through it):
-	//
-	//   loop: WaitForSingleObject(work);
-	//         if (*stopFlag) { SetEvent(done); ExitThread(0); }
-	//         rax = RunPrologue(self);      // managed: binds per-run ambient, returns stub
-	//         if (rax != 0) eax = rax();    // guest entry stub — zero managed frames below
-	//         RunEpilogue(self, eax);       // managed: captures outcome, restores ambient
-	//         SetEvent(done); goto loop;
-	//
-	// Workers carry no per-guest identity of their own: the prologue rebinds guest TLS,
-	// the host-RSP slot, the Active* thread-statics and the GuestThreadExecution ambient
-	// on every run, so a worker can be reused for any guest thread.
-	private sealed unsafe class NativeGuestExecutor : IDisposable
-	{
-		private const uint LoopStubSize = 512u;
-		private const uint WorkerStackReservation = 4u * 1024u * 1024u;
-
-		private static nint _waitForSingleObjectAddress;
-		private static nint _setEventAddress;
-		private static nint _exitThreadAddress;
-
-		private readonly DirectExecutionBackend _backend;
-		private readonly AutoResetEvent _workAvailable = new(false);
-		private readonly AutoResetEvent _workCompleted = new(false);
-		private GCHandle _selfHandle;
-		private void* _controlBlock;
-		private void* _loopStub;
-		private nint _threadHandle;
-		private uint _nativeThreadId;
-
-		// Single in-flight run; publication is ordered by the work/done event pair.
-		private CpuContext? _runContext;
-		private GuestThreadState? _runState;
-		private ulong _runGuestThreadHandle;
-		private ulong _runSentinelRip;
-		private ulong _runReturnSlotAddress;
-		private nint _runHostRspSlot;
-		private nint _runEntryStub;
-		private ulong _runAffinityMask;
-		private int _runNativeResult;
-		private bool _runYieldRequested;
-		private string? _runYieldReason;
-		private bool _runForcedExit;
-		private bool _runPrologueFailed;
-
-		// Prologue -> epilogue carry, only touched on the worker thread.
-		private DirectExecutionBackend? _prevBackend;
-		private CpuContext? _prevContext;
-		private ulong _prevSentinel;
-		private ulong _prevReturnSlot;
-		private bool _prevForcedExit;
-		private bool _prevYieldRequested;
-		private string? _prevYieldReason;
-		private GuestThreadState? _prevState;
-		private ulong _prevGuestThreadHandle;
-		private nint _prevHostRspSlot;
-		private int _prevHostThreadId;
-		private bool _entered;
-
-		private NativeGuestExecutor(DirectExecutionBackend backend)
-		{
-			_backend = backend;
-		}
-
-		public static NativeGuestExecutor? TryCreate(DirectExecutionBackend backend)
-		{
-			if (!EnsureKernel32Exports())
-			{
-				return null;
-			}
-			var executor = new NativeGuestExecutor(backend);
-			if (!executor.Initialize())
-			{
-				executor.Dispose();
-				return null;
-			}
-			return executor;
-		}
-
-		private static bool EnsureKernel32Exports()
-		{
-			if (_exitThreadAddress != 0)
-			{
-				return _waitForSingleObjectAddress != 0 && _setEventAddress != 0;
-			}
-			nint kernel32 = GetModuleHandle("kernel32.dll");
-			if (kernel32 == 0)
-			{
-				return false;
-			}
-			_waitForSingleObjectAddress = GetProcAddress(kernel32, "WaitForSingleObject");
-			_setEventAddress = GetProcAddress(kernel32, "SetEvent");
-			_exitThreadAddress = GetProcAddress(kernel32, "ExitThread");
-			return _waitForSingleObjectAddress != 0 && _setEventAddress != 0 && _exitThreadAddress != 0;
-		}
-
-		private bool Initialize()
-		{
-			_selfHandle = GCHandle.Alloc(this);
-			_controlBlock = VirtualAlloc(null, 4096u, 12288u, 4u);
-			if (_controlBlock == null)
-			{
-				return false;
-			}
-			_loopStub = VirtualAlloc(null, LoopStubSize, 12288u, 64u);
-			if (_loopStub == null)
-			{
-				return false;
-			}
-
-			var prologuePtr = (nint)(delegate* unmanaged<nint, nint>)&RunPrologue;
-			var epiloguePtr = (nint)(delegate* unmanaged<nint, int, void>)&RunEpilogue;
-			var executorHandle = GCHandle.ToIntPtr(_selfHandle);
-			var workHandle = _workAvailable.SafeWaitHandle.DangerousGetHandle();
-			var doneHandle = _workCompleted.SafeWaitHandle.DangerousGetHandle();
-
-			byte* code = (byte*)_loopStub;
-			int offset = 0;
-			void Emit(byte value) => code[offset++] = value;
-			void EmitMovRcxImm64(ulong value)
-			{
-				Emit(0x48); Emit(0xB9);
-				*(ulong*)(code + offset) = value;
-				offset += sizeof(ulong);
-			}
-			void EmitMovRaxImm64(ulong value)
-			{
-				Emit(0x48); Emit(0xB8);
-				*(ulong*)(code + offset) = value;
-				offset += sizeof(ulong);
-			}
-			void EmitCallRax()
-			{
-				Emit(0xFF); Emit(0xD0);
-			}
-			void EmitSetDoneEvent()
-			{
-				EmitMovRcxImm64((ulong)doneHandle);
-				EmitMovRaxImm64((ulong)_setEventAddress);
-				EmitCallRax();
-			}
-
-			// Thread entry leaves RSP ≡ 8 (mod 16); after this every call below happens
-			// at RSP ≡ 0 with shadow space available.
-			Emit(0x48); Emit(0x83); Emit(0xEC); Emit(0x28); // sub rsp, 0x28
-			int loopStart = offset;
-			EmitMovRcxImm64((ulong)workHandle);
-			Emit(0xBA);                                     // mov edx, INFINITE
-			*(uint*)(code + offset) = 0xFFFFFFFFu;
-			offset += sizeof(uint);
-			EmitMovRaxImm64((ulong)_waitForSingleObjectAddress);
-			EmitCallRax();
-			EmitMovRaxImm64((ulong)_controlBlock);
-			Emit(0x83); Emit(0x38); Emit(0x00);             // cmp dword [rax], 0
-			Emit(0x0F); Emit(0x85);                         // jne stop
-			int stopJump = offset;
-			offset += sizeof(int);
-			EmitMovRcxImm64((ulong)executorHandle);
-			EmitMovRaxImm64((ulong)prologuePtr);
-			EmitCallRax();                                  // rax = entry stub, or 0 on failure
-			Emit(0x48); Emit(0x85); Emit(0xC0);             // test rax, rax
-			Emit(0x0F); Emit(0x84);                         // je skipEntry
-			int skipJump = offset;
-			offset += sizeof(int);
-			EmitCallRax();                                  // guest entry stub -> eax
-			int skipEntryOffset = offset;
-			Emit(0x89); Emit(0xC2);                         // mov edx, eax
-			EmitMovRcxImm64((ulong)executorHandle);
-			EmitMovRaxImm64((ulong)epiloguePtr);
-			EmitCallRax();
-			EmitSetDoneEvent();
-			Emit(0xE9);                                     // jmp loop
-			*(int*)(code + offset) = loopStart - (offset + sizeof(int));
-			offset += sizeof(int);
-			int stopOffset = offset;
-			// Signal done so a Run() racing teardown cannot park forever; a stopped
-			// worker is never re-rented, so the stale signal is unobservable.
-			EmitSetDoneEvent();
-			Emit(0x31); Emit(0xC9);                         // xor ecx, ecx
-			EmitMovRaxImm64((ulong)_exitThreadAddress);
-			EmitCallRax();
-			Emit(0xCC);                                     // int3 (ExitThread never returns)
-			*(int*)(code + stopJump) = stopOffset - (stopJump + sizeof(int));
-			*(int*)(code + skipJump) = skipEntryOffset - (skipJump + sizeof(int));
-
-			uint oldProtect = 0;
-			if (!VirtualProtect(_loopStub, LoopStubSize, 32u, &oldProtect))
-			{
-				return false;
-			}
-			FlushInstructionCache(GetCurrentProcess(), _loopStub, LoopStubSize);
-			_threadHandle = CreateThread(
-				0,
-				WorkerStackReservation,
-				(nint)_loopStub,
-				0,
-				StackSizeParamIsAReservation,
-				out _nativeThreadId);
-			if (_threadHandle == 0)
-			{
-				return false;
-			}
-			if (LogThreadMode)
-			{
-				TraceThreadMode($"worker_created native_tid={_nativeThreadId} loop=0x{(ulong)_loopStub:X16}");
-			}
-			return true;
-		}
-
-		public int Run(
-			CpuContext context,
-			GuestThreadState? state,
-			ulong guestThreadHandle,
-			ulong sentinelRip,
-			ulong returnSlotAddress,
-			nint hostRspSlot,
-			nint entryStub,
-			ulong affinityMask,
-			out bool yieldRequested,
-			out string? yieldReason,
-			out bool forcedExit)
-		{
-			_runContext = context;
-			_runState = state;
-			_runGuestThreadHandle = guestThreadHandle;
-			_runSentinelRip = sentinelRip;
-			_runReturnSlotAddress = returnSlotAddress;
-			_runHostRspSlot = hostRspSlot;
-			_runEntryStub = entryStub;
-			_runAffinityMask = affinityMask;
-			_runPrologueFailed = true;
-			_runYieldRequested = false;
-			_runYieldReason = null;
-			_runForcedExit = false;
-			_workAvailable.Set();
-			_workCompleted.WaitOne();
-			_runContext = null;
-			_runState = null;
-			yieldRequested = _runYieldRequested;
-			yieldReason = _runYieldReason;
-			forcedExit = _runForcedExit;
-			if (_runPrologueFailed)
-			{
-				throw new InvalidOperationException("Native guest worker failed to bind the run ambient (prologue fault)");
-			}
-			return _runNativeResult;
-		}
-
-		[UnmanagedCallersOnly]
-		private static nint RunPrologue(nint executorHandle)
-		{
-			try
-			{
-				var executor = (NativeGuestExecutor)GCHandle.FromIntPtr(executorHandle).Target!;
-				return executor.EnterRun();
-			}
-			catch (Exception ex)
-			{
-				try
-				{
-					Console.Error.WriteLine(
-						$"[LOADER][ERROR] Native guest worker prologue failed: {ex.GetType().Name}: {ex.Message}");
-				}
-				catch
-				{
-				}
-				return 0;
-			}
-		}
-
-		[UnmanagedCallersOnly]
-		private static void RunEpilogue(nint executorHandle, int nativeResult)
-		{
-			try
-			{
-				var executor = (NativeGuestExecutor)GCHandle.FromIntPtr(executorHandle).Target!;
-				executor.ExitRun(nativeResult);
-			}
-			catch (Exception ex)
-			{
-				try
-				{
-					Console.Error.WriteLine(
-						$"[LOADER][ERROR] Native guest worker epilogue failed: {ex.GetType().Name}: {ex.Message}");
-				}
-				catch
-				{
-				}
-			}
-		}
-
-		private nint EnterRun()
-		{
-			var backend = _backend;
-			_prevBackend = _activeExecutionBackend;
-			_prevContext = _activeCpuContext;
-			_prevSentinel = _activeEntryReturnSentinelRip;
-			_prevReturnSlot = _activeGuestReturnSlotAddress;
-			_prevForcedExit = _activeForcedGuestExit;
-			_prevYieldRequested = _activeGuestThreadYieldRequested;
-			_prevYieldReason = _activeGuestThreadYieldReason;
-			_prevState = _activeGuestThreadState;
-			_prevHostRspSlot = TlsGetValue(backend._hostRspSlotTlsIndex);
-			_prevGuestThreadHandle = GuestThreadExecution.EnterGuestThread(_runGuestThreadHandle);
-			_entered = true;
-			_activeExecutionBackend = backend;
-			_activeCpuContext = _runContext;
-			_activeEntryReturnSentinelRip = _runSentinelRip;
-			_activeGuestReturnSlotAddress = _runReturnSlotAddress;
-			_activeForcedGuestExit = false;
-			_activeGuestThreadYieldRequested = false;
-			_activeGuestThreadYieldReason = null;
-			_activeGuestThreadState = _runState;
-			backend.BindTlsBase(_runContext!);
-			TlsSetValue(backend._hostRspSlotTlsIndex, _runHostRspSlot);
-			if (_runState is { } state)
-			{
-				_prevHostThreadId = Volatile.Read(ref state.HostThreadId);
-				Volatile.Write(ref state.HostThreadId, unchecked((int)GetCurrentThreadId()));
-			}
-			if (_runAffinityMask != 0)
-			{
-				backend.ApplyGuestThreadAffinity(_runAffinityMask);
-			}
-			_runPrologueFailed = false;
-			if (LogThreadMode)
-			{
-				TraceThreadMode(
-					$"worker_enter guest=0x{_runGuestThreadHandle:X16} stub=0x{(ulong)_runEntryStub:X16}");
-			}
-			return _runEntryStub;
-		}
-
-		private void ExitRun(int nativeResult)
-		{
-			_runNativeResult = nativeResult;
-			_runYieldRequested = _activeGuestThreadYieldRequested;
-			_runYieldReason = _activeGuestThreadYieldReason;
-			_runForcedExit = _activeForcedGuestExit;
-			if (!_entered)
-			{
-				return;
-			}
-			_entered = false;
-			if (_runState is { } state)
-			{
-				Volatile.Write(ref state.HostThreadId, _prevHostThreadId);
-			}
-			TlsSetValue(_backend._hostRspSlotTlsIndex, _prevHostRspSlot);
-			GuestThreadExecution.RestoreGuestThread(_prevGuestThreadHandle);
-			_activeExecutionBackend = _prevBackend;
-			_activeCpuContext = _prevContext;
-			_activeEntryReturnSentinelRip = _prevSentinel;
-			_activeGuestReturnSlotAddress = _prevReturnSlot;
-			_activeForcedGuestExit = _prevForcedExit;
-			_activeGuestThreadYieldRequested = _prevYieldRequested;
-			_activeGuestThreadYieldReason = _prevYieldReason;
-			_activeGuestThreadState = _prevState;
-			_prevBackend = null;
-			_prevContext = null;
-			_prevState = null;
-			_prevYieldReason = null;
-			if (LogThreadMode)
-			{
-				TraceThreadMode(
-					$"worker_exit guest=0x{_runGuestThreadHandle:X16} result=0x{nativeResult:X8} yield={_runYieldRequested}");
-			}
-		}
-
-		public void Dispose()
-		{
-			if (_controlBlock != null)
-			{
-				*(int*)_controlBlock = 1;
-			}
-			try
-			{
-				_workAvailable.Set();
-			}
-			catch (ObjectDisposedException)
-			{
-			}
-			var exited = _threadHandle == 0;
-			if (_threadHandle != 0)
-			{
-				exited = WaitForSingleObject(_threadHandle, 1000u) == 0u;
-				CloseHandle(_threadHandle);
-				_threadHandle = 0;
-			}
-			if (!exited)
-			{
-				// The worker is still parked in guest code (teardown should have unwound
-				// it first). Leak the stub, control block, events and GC handle rather
-				// than have the thread execute freed memory.
-				Console.Error.WriteLine(
-					$"[LOADER][WARN] Native guest worker tid={_nativeThreadId} did not stop; leaking its run loop.");
-				return;
-			}
-			if (_loopStub != null)
-			{
-				VirtualFree(_loopStub, 0u, 32768u);
-				_loopStub = null;
-			}
-			if (_controlBlock != null)
-			{
-				VirtualFree(_controlBlock, 0u, 32768u);
-				_controlBlock = null;
-			}
-			if (_selfHandle.IsAllocated)
-			{
-				_selfHandle.Free();
-			}
-			_workAvailable.Dispose();
-			_workCompleted.Dispose();
-		}
-	}
-}

src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.cs

@@ -11,13 +11,11 @@ using SharpEmu.Core.Cpu;
 using SharpEmu.Core.Loader;
 using SharpEmu.Core.Memory;
 using SharpEmu.HLE;
-using SharpEmu.Logging;
 
 namespace SharpEmu.Core.Cpu.Native;
 
 public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, IGuestThreadScheduler, IDisposable
 {
-	private static readonly SharpEmuLogger Log = SharpEmuLog.For("Native");
 	private const int ImportLoopHistoryLength = 2048;
 
 	private const int ImportLoopWideDiversityWindow = 768;
@@ -424,10 +422,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		private void ThreadMain()
 		{
 			var previousGuestThreadHandle = GuestThreadExecution.EnterGuestThread(_guestThreadHandle);
-			if (LogThreadMode)
-			{
-				TraceThreadMode($"runner_start guest=0x{_guestThreadHandle:X16}");
-			}
 			try
 			{
 				while (true)
@@ -438,11 +432,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 						return;
 					}
 
-					if (LogThreadMode)
-					{
-						_threadModeCycleId = Interlocked.Increment(ref _threadModeCycleCounter);
-						TraceThreadMode($"runner_run guest=0x{_guestThreadHandle:X16}");
-					}
 					try
 					{
 						_work?.Invoke();
@@ -455,10 +444,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 			}
 			finally
 			{
-				if (LogThreadMode)
-				{
-					TraceThreadMode($"runner_stop guest=0x{_guestThreadHandle:X16}");
-				}
 				GuestThreadExecution.RestoreGuestThread(previousGuestThreadHandle);
 			}
 		}
@@ -482,14 +467,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 
 	private readonly Queue<GuestThreadState> _readyGuestThreads = new Queue<GuestThreadState>();
 
-	// Once set, guest worker threads are unwound to the host at their next import
-	// dispatch and Pump refuses to start new ones. This must happen before the
-	// runtime frees trampolines or guest memory: workers that keep running native
-	// guest code during teardown execute freed pages (observed as an execute-AV in
-	// a MEM_FREE module region plus a CLR "UnmanagedCallersOnly" fatal from a Pump
-	// thread entering a freed stub).
-	private volatile bool _guestTeardownRequested;
-
 	private int _readyGuestThreadCount;
 
 	private readonly Dictionary<ulong, GuestThreadState> _guestThreads = new Dictionary<ulong, GuestThreadState>();
@@ -588,33 +565,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 
 	private static int _nestedVehTraceCount;
 
-	// SHARPEMU_LOG_THREAD_MODE=1 — GC thread-mode corruption investigation. Traces
-	// every managed<->guest transition per guest-thread run cycle so the last event
-	// before a ReversePInvokeBadTransition FailFast identifies the corrupting path.
-	private static readonly bool LogThreadMode =
-		string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_THREAD_MODE"), "1", StringComparison.Ordinal);
-
-	private static long _threadModeCycleCounter;
-
-	[ThreadStatic]
-	private static long _threadModeCycleId;
-
-	[ThreadStatic]
-	private static int _threadModeGatewayDepth;
-
-	[ThreadStatic]
-	private static long _threadModeGatewayCalls;
-
-	[ThreadStatic]
-	private static bool _threadModeGatewayFirstLogged;
-
-	private static void TraceThreadMode(string message)
-	{
-		Console.Error.WriteLine(
-			$"[THREADMODE] {message} cycle={_threadModeCycleId} tid={GetCurrentThreadId()} managed={Environment.CurrentManagedThreadId}");
-		Console.Error.Flush();
-	}
-
 	private const uint MEM_COMMIT = 4096u;
 
 	private const uint MEM_RESERVE = 8192u;
@@ -673,17 +623,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 	private unsafe static int CallNativeEntry(void* entry)
 	{
 		var nativeEntry = (delegate* unmanaged[Cdecl]<int>)entry;
-		if (!LogThreadMode)
+		return nativeEntry();
-		{
-			return nativeEntry();
-		}
-
-		_threadModeGatewayFirstLogged = false;
-		var dispatchesBefore = _threadModeGatewayCalls;
-		TraceThreadMode($"native_enter entry=0x{(ulong)entry:X16}");
-		var result = nativeEntry();
-		TraceThreadMode($"native_exit result=0x{result:X8} dispatches={_threadModeGatewayCalls - dispatchesBefore}");
-		return result;
 	}
 
 	private unsafe static void WriteCtxU64(void* contextRecord, int offset, ulong value)
@@ -882,7 +822,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		_importLoopGuardSeconds = GetImportLoopGuardSeconds();
 		_entryReturnSentinelRip = 0uL;
 		_forcedGuestExit = false;
-		_guestTeardownRequested = false;
 		_importLoopSignatureCount = 0;
 		_importLoopSignatureWriteIndex = 0;
 		_importLoopPatternHits = 0;
@@ -1181,72 +1120,21 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 				0x75, 0xF5,
 				0xC3,
 			],
-			// memcpy: guarded native copy. The first "rep movsb" intrinsic had no bounds/null
-			// checking and crashed with a read at -1 right after a null-dst memset recovery in
-			// the NGS2 audio streaming code path, so it was temporarily pulled in favor of the
-			// safe C# HLE memcpy. That detour costs a full import dispatch per call - far too
-			// slow for a function this hot - so this stub keeps the native leaf path and adds
-			// the same guards as memset below: it silently returns dst without copying when dst
-			// or src is null/low-page (< 0x10000) or outside canonical user space, or when len
-			// is 0 or absurd (> 512MB).
 			"Q3VBxCXhUHs" =>
 			[
-				0x48, 0x89, 0xF8,                                           // mov rax, rdi (return dst)
+				0x48, 0x89, 0xF8,
-				0x48, 0x81, 0xFF, 0x00, 0x00, 0x01, 0x00,                   // cmp rdi, 0x10000
+				0x48, 0x89, 0xD1,
-				0x72, 0x31,                                                 // jb done
+				0xF3, 0xA4,
-				0x49, 0xB8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, // mov r8, 0x800000000000
+				0xC3,
-				0x4C, 0x39, 0xC7,                                           // cmp rdi, r8
-				0x73, 0x22,                                                 // jae done
-				0x48, 0x81, 0xFE, 0x00, 0x00, 0x01, 0x00,                   // cmp rsi, 0x10000
-				0x72, 0x19,                                                 // jb done
-				0x4C, 0x39, 0xC6,                                           // cmp rsi, r8
-				0x73, 0x14,                                                 // jae done
-				0x48, 0x81, 0xFA, 0x00, 0x00, 0x00, 0x20,                   // cmp rdx, 0x20000000
-				0x77, 0x0B,                                                 // ja done
-				0x48, 0x85, 0xD2,                                           // test rdx, rdx
-				0x74, 0x06,                                                 // jz done
-				0x48, 0x89, 0xD1,                                           // mov rcx, rdx
-				0xFC,                                                       // cld
-				0xF3, 0xA4,                                                 // rep movsb
-				0xC3,                                                       // done: ret
-			],
-			// memset: guarded native fill. An earlier unguarded version crashed with a write AV
-			// at address 0 (NGS2 audio streaming init memsets a never-populated buffer field),
-			// so this one mirrors the HLE guards and silently returns dst without writing when
-			// dst is null/low-page (< 0x10000), dst is outside canonical user space, or len is
-			// absurd (> 512MB, e.g. the 0x27060035 / sign-extended values NGS2 passes). Routing
-			// memset through the HLE trampoline instead is not viable: parse/streaming loops
-			// issue hundreds of thousands of small memsets back-to-back, which crawls at
-			// dispatch speed and looks like a repeating-import hang to the loop guard.
-			// _sigprocmask: the HLE handler (KernelRuntimeCompatExports.Sigprocmask) is a pure
-			// no-op returning 0 that never writes oldset, so this is behavior-identical. The
-			// game's bundled libc queries the mask (set=NULL) once per iteration in its font/
-			// parse loops - hundreds of thousands of back-to-back calls that both crawl at
-			// dispatch speed and read as a repeating-import hang to the loop guard.
-			"6xVpy0Fdq+I" =>
-			[
-				0x31, 0xC0, // xor eax, eax
-				0xC3,       // ret
 			],
 			"8zTFvBIAIN8" =>
 			[
-				0x48, 0x89, 0xF8,                                           // mov rax, rdi (return dst)
+				0x49, 0x89, 0xF8,
-				0x48, 0x81, 0xFF, 0x00, 0x00, 0x01, 0x00,                   // cmp rdi, 0x10000
+				0x48, 0x89, 0xF0,
-				0x72, 0x2B,                                                 // jb done
+				0x48, 0x89, 0xD1,
-				0x49, 0xB8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, // mov r8, 0x800000000000
+				0xF3, 0xAA,
-				0x4C, 0x39, 0xC7,                                           // cmp rdi, r8
+				0x4C, 0x89, 0xC0,
-				0x73, 0x1C,                                                 // jae done
+				0xC3,
-				0x48, 0x81, 0xFA, 0x00, 0x00, 0x00, 0x20,                   // cmp rdx, 0x20000000
-				0x77, 0x13,                                                 // ja done
-				0x48, 0x85, 0xD2,                                           // test rdx, rdx
-				0x74, 0x0E,                                                 // jz done
-				0x48, 0x89, 0xD1,                                           // mov rcx, rdx
-				0x49, 0x89, 0xF9,                                           // mov r9, rdi
-				0x89, 0xF0,                                                 // mov eax, esi
-				0xFC,                                                       // cld
-				0xF3, 0xAA,                                                 // rep stosb
-				0x4C, 0x89, 0xC8,                                           // mov rax, r9
-				0xC3,                                                       // done: ret
 			],
 			_ => default,
 		};
@@ -1465,25 +1353,10 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 	{
 		return exportName switch
 		{
+			"memcpy" or
 			"memmove" or
-			// memset/memcpy excluded: the raw LLE routines have no null/bounds guard and crash
+			"memset" or
-			// with an access violation on bad pointers (observed hit during Quake's CL_Init,
+			"memcmp" => true,
-			// where a still-unidentified upstream bug calls memcpy/memset with a null
-			// destination). Both are instead served by the guarded native intrinsics in
-			// TryCreateNativeImportIntrinsic, which fail safely without leaving the leaf path.
-			"memcmp" or
-			// _Getpctype must come from the game's own Dinkumware libc when one is bundled:
-			// it returns a pointer to that CRT's ctype bitmask table, whose bit layout
-			// (_DI=0x20, _SP=0x04, _BB=0x80, ...) differs from the MSVC-style table the HLE
-			// fallback used to serve. Serving the wrong layout made the bundled printf engine
-			// render every Sys_Error message as an empty string (isdigit misfired during
-			// %-directive parsing) and made mcpp drop 'a'-'f' from identifiers ("texture" ->
-			// "txtur", the 0x80 bit reads as _BB/control there). _Getptolower/_Getptoupper
-			// already resolve to the bundled module because no HLE export shadows them; this
-			// keeps _Getpctype consistent with them. It is a pure accessor returning a pointer
-			// to a const table, so it is also the cheapest possible LLE call - important
-			// because parsers hit it once per input character.
-			"_Getpctype" => true,
 			_ => false,
 		};
 	}
@@ -1695,7 +1568,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 
 	private unsafe nint CreateImportHandlerTrampoline(int importIndex)
 	{
-		void* ptr = VirtualAlloc(null, 256u, 12288u, 64u);
+		void* ptr = VirtualAlloc(null, 192u, 12288u, 64u);
 		if (ptr == null)
 		{
 			return 0;
@@ -1723,21 +1596,20 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 			ptr2[num++] = 82;
 			ptr2[num++] = 86;
 			ptr2[num++] = 87;
-			// sub rsp, 0x80  — reserve 8*16 bytes for the SysV variadic XMM save area
+			ptr2[num++] = 72;
-			ptr2[num++] = 0x48; ptr2[num++] = 0x81; ptr2[num++] = 0xEC;
+			ptr2[num++] = 131;
-			ptr2[num++] = 0x80; ptr2[num++] = 0x00; ptr2[num++] = 0x00; ptr2[num++] = 0x00;
+			ptr2[num++] = 236;
-			// movdqu [rsp + i*0x10], xmm{i}  for i = 0..7  (F3 0F 7F /r, SIB=0x24 base=rsp, disp8)
+			ptr2[num++] = 16;
-			ptr2[num++] = 0xF3; ptr2[num++] = 0x0F; ptr2[num++] = 0x7F; ptr2[num++] = 0x44; ptr2[num++] = 0x24; ptr2[num++] = 0x00; // xmm0
+			ptr2[num++] = 243;
-			ptr2[num++] = 0xF3; ptr2[num++] = 0x0F; ptr2[num++] = 0x7F; ptr2[num++] = 0x4C; ptr2[num++] = 0x24; ptr2[num++] = 0x10; // xmm1
+			ptr2[num++] = 15;
-			ptr2[num++] = 0xF3; ptr2[num++] = 0x0F; ptr2[num++] = 0x7F; ptr2[num++] = 0x54; ptr2[num++] = 0x24; ptr2[num++] = 0x20; // xmm2
+			ptr2[num++] = 127;
-			ptr2[num++] = 0xF3; ptr2[num++] = 0x0F; ptr2[num++] = 0x7F; ptr2[num++] = 0x5C; ptr2[num++] = 0x24; ptr2[num++] = 0x30; // xmm3
+			ptr2[num++] = 4;
-			ptr2[num++] = 0xF3; ptr2[num++] = 0x0F; ptr2[num++] = 0x7F; ptr2[num++] = 0x64; ptr2[num++] = 0x24; ptr2[num++] = 0x40; // xmm4
+			ptr2[num++] = 36;
-			ptr2[num++] = 0xF3; ptr2[num++] = 0x0F; ptr2[num++] = 0x7F; ptr2[num++] = 0x6C; ptr2[num++] = 0x24; ptr2[num++] = 0x50; // xmm5
+			ptr2[num++] = 76;
-			ptr2[num++] = 0xF3; ptr2[num++] = 0x0F; ptr2[num++] = 0x7F; ptr2[num++] = 0x74; ptr2[num++] = 0x24; ptr2[num++] = 0x60; // xmm6
+			ptr2[num++] = 141;
-			ptr2[num++] = 0xF3; ptr2[num++] = 0x0F; ptr2[num++] = 0x7F; ptr2[num++] = 0x7C; ptr2[num++] = 0x24; ptr2[num++] = 0x70; // xmm7
+			ptr2[num++] = 100;
-			// lea r12, [rsp + 0x80]  — r12 = argpack base (the 12 pushed GP regs), past the XMM area
+			ptr2[num++] = 36;
-			ptr2[num++] = 0x4C; ptr2[num++] = 0x8D; ptr2[num++] = 0xA4; ptr2[num++] = 0x24;
+			ptr2[num++] = 16;
-			ptr2[num++] = 0x80; ptr2[num++] = 0x00; ptr2[num++] = 0x00; ptr2[num++] = 0x00;
 			ptr2[num++] = 72;
 			ptr2[num++] = 131;
 			ptr2[num++] = 236;
@@ -1785,11 +1657,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 			ptr2[num++] = 131;
 			ptr2[num++] = 196;
 			ptr2[num++] = 40;
-			// movdqu xmm0, [r12 - 0x80]  — reload the return XMM0 the gateway wrote into the
-			// argpack's xmm0 save slot (float/double returns: powf/logf/wcstod). SysV/Win64
-			// XMM regs are volatile across calls, so an unconditional reload is ABI-safe.
-			ptr2[num++] = 0xF3; ptr2[num++] = 0x41; ptr2[num++] = 0x0F; ptr2[num++] = 0x6F;
-			ptr2[num++] = 0x84; ptr2[num++] = 0x24; ptr2[num++] = 0x80; ptr2[num++] = 0xFF; ptr2[num++] = 0xFF; ptr2[num++] = 0xFF;
 			ptr2[num++] = 76;
 			ptr2[num++] = 137;
 			ptr2[num++] = 228;
@@ -1812,14 +1679,10 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 			ptr2[num++] = 65;
 			ptr2[num++] = 95;
 			ptr2[num++] = 195;
-		uint num2 = default(uint);
+			uint num2 = default(uint);
-		if (!VirtualProtect(ptr, 256u, 32u, &num2))
+			VirtualProtect(ptr, 192u, 32u, &num2);
-		{
+			FlushInstructionCache(GetCurrentProcess(), ptr, 192u);
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for import dispatch stub at 0x{(nint)ptr:X16}");
+			return (nint)ptr;
-			return 0;
-		}
-		FlushInstructionCache(GetCurrentProcess(), ptr, 256u);
-		return (nint)ptr;
 		}
 		catch
 		{
@@ -1900,11 +1763,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		tlsHandlerAddress[num++] = 195;
 		_tlsPatchStubOffset = (num + 15) & ~15;
 		uint num2 = default(uint);
-		if (!VirtualProtect((void*)_tlsHandlerAddress, TlsHandlerRegionSize, 32u, &num2))
+		VirtualProtect((void*)_tlsHandlerAddress, TlsHandlerRegionSize, 32u, &num2);
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for TLS handler at 0x{_tlsHandlerAddress:X16}");
-			return;
-		}
 		FlushInstructionCache(GetCurrentProcess(), (void*)_tlsHandlerAddress, TlsHandlerRegionSize);
 		Console.Error.WriteLine($"[LOADER][INFO] TLS handler at 0x{_tlsHandlerAddress:X16}");
 	}
@@ -1925,11 +1784,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 			ptr2[i] = 144;
 		}
 		uint num = default(uint);
-		if (!VirtualProtect(ptr, 4096u, 32u, &num))
+		VirtualProtect(ptr, 4096u, 32u, &num);
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for unresolved return stub at 0x{(nint)ptr:X16}");
-			return 0;
-		}
 		FlushInstructionCache(GetCurrentProcess(), ptr, 16u);
 		return (nint)ptr;
 	}
@@ -1976,11 +1831,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		EmitByte(code, ref offset, 0xC3);
 
 		uint oldProtect = default;
-		if (!VirtualProtect(ptr, stubSize, 32u, &oldProtect))
+		VirtualProtect(ptr, stubSize, 32u, &oldProtect);
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for guest return stub at 0x{(nint)ptr:X16}");
-			return 0;
-		}
 		FlushInstructionCache(GetCurrentProcess(), ptr, (nuint)offset);
 		return (nint)ptr;
 	}
@@ -1996,36 +1847,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 
 		byte* code = (byte*)ptr;
 		int offset = 0;
-		// Native pre-filter: these exception codes are raised while the thread can be in
-		// cooperative GC mode (a C# throw is RaiseException(0xE0434352) on the throwing
-		// thread; FailFast/stack-overflow arrive mid-runtime-failure). Entering the managed
-		// handler then trips the CLR's reverse-P/Invoke check and kills the process with
-		// "Invalid Program: attempted to call a UnmanagedCallersOnly method from managed
-		// code" — this is why no managed throw (even one with a catch handler) ever
-		// survived inside the emulator. Continue the handler search without touching
-		// managed code; the CLR's own VEH handles its exceptions. MSVC C++ exceptions
-		// (Vulkan drivers, host CRT) are excluded too: the managed handler only ever
-		// returned CONTINUE_SEARCH for them.
-		ReadOnlySpan<uint> nonManagedExceptionCodes = [0xE0434352u, MSVC_CPP_EXCEPTION, 0xC0000409u, 0xC00000FDu];
-		EmitByte(code, ref offset, 0x48); EmitByte(code, ref offset, 0x8B); EmitByte(code, ref offset, 0x01); // mov rax, [rcx] (ExceptionRecord*)
-		EmitByte(code, ref offset, 0x8B); EmitByte(code, ref offset, 0x00);                                   // mov eax, [rax] (ExceptionCode)
-		var passJumpOffsets = stackalloc int[nonManagedExceptionCodes.Length];
-		for (int i = 0; i < nonManagedExceptionCodes.Length; i++)
-		{
-			EmitByte(code, ref offset, 0x3D);                                                                 // cmp eax, imm32
-			EmitUInt32(code, ref offset, nonManagedExceptionCodes[i]);
-			EmitByte(code, ref offset, 0x74);                                                                 // je pass
-			passJumpOffsets[i] = offset;
-			EmitByte(code, ref offset, 0x00);
-		}
-		EmitByte(code, ref offset, 0xEB); EmitByte(code, ref offset, 0x03);                                   // jmp over pass block
-		int passOffset = offset;
-		EmitByte(code, ref offset, 0x31); EmitByte(code, ref offset, 0xC0);                                   // pass: xor eax, eax (EXCEPTION_CONTINUE_SEARCH)
-		EmitByte(code, ref offset, 0xC3);                                                                     // ret
-		for (int i = 0; i < nonManagedExceptionCodes.Length; i++)
-		{
-			code[passJumpOffsets[i]] = checked((byte)(passOffset - (passJumpOffsets[i] + 1)));
-		}
 		EmitByte(code, ref offset, 0x41); EmitByte(code, ref offset, 0x54); // push r12
 		EmitByte(code, ref offset, 0x41); EmitByte(code, ref offset, 0x55); // push r13
 		EmitByte(code, ref offset, 0x49); EmitByte(code, ref offset, 0x89); EmitByte(code, ref offset, 0xE4); // mov r12, rsp
@@ -2102,11 +1923,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		*(int*)(code + guestRestoreJump) = restoreOffset - (guestRestoreJump + sizeof(int));
 
 		uint oldProtect = default;
-		if (!VirtualProtect(ptr, stubSize, 32u, &oldProtect))
+		VirtualProtect(ptr, stubSize, 32u, &oldProtect);
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for exception handler trampoline at 0x{(nint)ptr:X16}");
-			return 0;
-		}
 		FlushInstructionCache(GetCurrentProcess(), ptr, (nuint)offset);
 		return (nint)ptr;
 	}
@@ -2437,11 +2254,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 			ptr[num2++] = 144;
 		}
 		uint flNewProtect = default(uint);
-		if (!VirtualProtect((void*)num, 32u, 32u, &flNewProtect))
+		VirtualProtect((void*)num, 32u, 32u, &flNewProtect);
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for TLS store helper at 0x{num:X16}");
-			return 0;
-		}
 		FlushInstructionCache(GetCurrentProcess(), (void*)num, 32u);
 		return num;
 	}
@@ -2710,10 +2523,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 	public void Pump(CpuContext callerContext, string reason)
 	{
 		_ = callerContext;
-		if (_guestTeardownRequested)
-		{
-			return;
-		}
 		var runSynchronously = string.Equals(reason, "entry_return", StringComparison.Ordinal);
 		WakeExpiredBlockedGuestThreads();
 		if (Volatile.Read(ref _readyGuestThreadCount) == 0)
@@ -3238,45 +3047,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		continuationThread.Join();
 	}
 
-	/// <summary>
-	/// Parks every guest worker thread before the caller starts freeing executable
-	/// memory. Workers unwind to the host at their next import dispatch (see the
-	/// teardown check in DispatchImport); this waits for their host threads to
-	/// finish within <paramref name="timeoutMs"/>. Returns false when at least one
-	/// worker is still running — the caller must then leak its executable stubs
-	/// rather than free memory a live thread may still execute.
-	/// </summary>
-	private bool RequestGuestThreadTeardown(int timeoutMs)
-	{
-		_guestTeardownRequested = true;
-		Thread[] hostThreads;
-		lock (_guestThreadGate)
-		{
-			_readyGuestThreads.Clear();
-			Interlocked.Exchange(ref _readyGuestThreadCount, 0);
-			hostThreads = _guestThreads.Values
-				.Select(static thread => thread.HostThread)
-				.Where(static host => host is not null && host != Thread.CurrentThread && host.IsAlive)
-				.Cast<Thread>()
-				.ToArray();
-		}
-
-		var deadline = Environment.TickCount64 + timeoutMs;
-		var allStopped = true;
-		foreach (var host in hostThreads)
-		{
-			var remaining = (int)Math.Max(1L, deadline - Environment.TickCount64);
-			if (!host.Join(remaining) && host.IsAlive)
-			{
-				allStopped = false;
-				Console.Error.WriteLine(
-					$"[LOADER][WARN] Guest worker host thread '{host.Name}' still running after teardown wait.");
-			}
-		}
-
-		return allStopped;
-	}
-
 	private void ClearGuestThreads()
 	{
 		GuestContinuationRunner[] runners;
@@ -3556,13 +3326,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		ApplyGuestThreadAffinity(thread.AffinityMask);
 		Volatile.Write(ref thread.HostThreadId, unchecked((int)GetCurrentThreadId()));
 		_activeGuestThreadState = thread;
-		if (LogThreadMode)
-		{
-			_threadModeCycleId = Interlocked.Increment(ref _threadModeCycleCounter);
-			TraceThreadMode(
-				$"cycle_start name='{thread.Name}' guest=0x{thread.ThreadHandle:X16} reason={reason} " +
-				$"rsp_slot=0x{(ulong)TlsGetValue(_hostRspSlotTlsIndex):X}");
-		}
 		try
 		{
 			LastError = null;
@@ -3637,13 +3400,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		}
 		finally
 		{
-			if (LogThreadMode)
-			{
-				TraceThreadMode(
-					$"cycle_end name='{thread.Name}' state={thread.State} " +
-					$"imports={Interlocked.Read(ref thread.ImportCount)} " +
-					$"rsp_slot=0x{(ulong)TlsGetValue(_hostRspSlotTlsIndex):X}");
-			}
 			_activeGuestThreadState = previousGuestThreadState;
 			Volatile.Write(ref thread.HostThreadId, 0);
 			GuestThreadExecution.RestoreGuestThread(previousGuestThreadHandle);
@@ -3718,175 +3474,169 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		var previousYieldRequested = _activeGuestThreadYieldRequested;
 		var previousYieldReason = _activeGuestThreadYieldReason;
 		nint previousHostRspSlotValue = TlsGetValue(_hostRspSlotTlsIndex);
-		if (LogThreadMode)
-		{
-			TraceThreadMode(
-				$"entry_setup name='{name}' entry=0x{entryPoint:X16} stub=0x{(ulong)ptr:X16} " +
-				$"guest_rsp=0x{context[CpuRegister.Rsp]:X16} rsp_slot_prev=0x{(ulong)previousHostRspSlotValue:X}");
-		}
 		try
-    {
+		{
-        _activeExecutionBackend = this;
+			_activeExecutionBackend = this;
-        _activeCpuContext = context;
+			_activeCpuContext = context;
-        _activeEntryReturnSentinelRip = 0;
+			_activeEntryReturnSentinelRip = 0;
-        _activeGuestReturnSlotAddress = 0;
+			_activeGuestReturnSlotAddress = 0;
-        _activeForcedGuestExit = false;
+			_activeForcedGuestExit = false;
-        _activeGuestThreadYieldRequested = false;
+			_activeGuestThreadYieldRequested = false;
-        _activeGuestThreadYieldReason = null;
+			_activeGuestThreadYieldReason = null;
-        BindTlsBase(context);
+			BindTlsBase(context);
-        byte* ptr2 = (byte*)ptr;
+			byte* ptr2 = (byte*)ptr;
-        ulong hostRspSlot = (ulong)ptr + stubSize - 16uL;
+			ulong hostRspSlot = (ulong)ptr + stubSize - 16uL;
-        int offset = 0;
+			int offset = 0;
-        ptr2[offset++] = 83;
+			ptr2[offset++] = 83;
-        ptr2[offset++] = 85;
+			ptr2[offset++] = 85;
-        ptr2[offset++] = 87;
+			ptr2[offset++] = 87;
-        ptr2[offset++] = 86;
+			ptr2[offset++] = 86;
-        ptr2[offset++] = 65;
+			ptr2[offset++] = 65;
-        ptr2[offset++] = 84;
+			ptr2[offset++] = 84;
-        ptr2[offset++] = 65;
+			ptr2[offset++] = 65;
-        ptr2[offset++] = 85;
+			ptr2[offset++] = 85;
-        ptr2[offset++] = 65;
+			ptr2[offset++] = 65;
-        ptr2[offset++] = 86;
+			ptr2[offset++] = 86;
-        ptr2[offset++] = 65;
+			ptr2[offset++] = 65;
-        ptr2[offset++] = 87;
+			ptr2[offset++] = 87;
-        EmitHostNonvolatileXmmSave(ptr2, ref offset);
+			EmitHostNonvolatileXmmSave(ptr2, ref offset);
-        ptr2[offset++] = 73;
+			ptr2[offset++] = 73;
-        ptr2[offset++] = 186;
+			ptr2[offset++] = 186;
-        *(ulong*)(ptr2 + offset) = hostRspSlot;
+			*(ulong*)(ptr2 + offset) = hostRspSlot;
-        offset += 8;
+			offset += 8;
-        ptr2[offset++] = 73;
+			ptr2[offset++] = 73;
-        ptr2[offset++] = 137;
+			ptr2[offset++] = 137;
-        ptr2[offset++] = 34;
+			ptr2[offset++] = 34;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 184;
+			ptr2[offset++] = 184;
-        *(ulong*)(ptr2 + offset) = context[CpuRegister.Rsp];
+			*(ulong*)(ptr2 + offset) = context[CpuRegister.Rsp];
-        offset += 8;
+			offset += 8;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 137;
+			ptr2[offset++] = 137;
-        ptr2[offset++] = 196;
+			ptr2[offset++] = 196;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 131;
+			ptr2[offset++] = 131;
-        ptr2[offset++] = 236;
+			ptr2[offset++] = 236;
-        ptr2[offset++] = 8;
+			ptr2[offset++] = 8;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 189;
+			ptr2[offset++] = 189;
-        *(ulong*)(ptr2 + offset) = context[CpuRegister.Rbp];
+			*(ulong*)(ptr2 + offset) = context[CpuRegister.Rbp];
-        offset += 8;
+			offset += 8;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 184;
+			ptr2[offset++] = 184;
-        *(ulong*)(ptr2 + offset) = context[CpuRegister.Rdi];
+			*(ulong*)(ptr2 + offset) = context[CpuRegister.Rdi];
-        offset += 8;
+			offset += 8;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 137;
+			ptr2[offset++] = 137;
-        ptr2[offset++] = 199;
+			ptr2[offset++] = 199;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 184;
+			ptr2[offset++] = 184;
-        *(ulong*)(ptr2 + offset) = context[CpuRegister.Rsi];
+			*(ulong*)(ptr2 + offset) = context[CpuRegister.Rsi];
-        offset += 8;
+			offset += 8;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 137;
+			ptr2[offset++] = 137;
-        ptr2[offset++] = 198;
+			ptr2[offset++] = 198;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 184;
+			ptr2[offset++] = 184;
-        *(ulong*)(ptr2 + offset) = context[CpuRegister.Rdx];
+			*(ulong*)(ptr2 + offset) = context[CpuRegister.Rdx];
-        offset += 8;
+			offset += 8;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 137;
+			ptr2[offset++] = 137;
-        ptr2[offset++] = 194;
+			ptr2[offset++] = 194;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 184;
+			ptr2[offset++] = 184;
-        *(ulong*)(ptr2 + offset) = context[CpuRegister.Rcx];
+			*(ulong*)(ptr2 + offset) = context[CpuRegister.Rcx];
-        offset += 8;
+			offset += 8;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 137;
+			ptr2[offset++] = 137;
-        ptr2[offset++] = 193;
+			ptr2[offset++] = 193;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 184;
+			ptr2[offset++] = 184;
-        *(ulong*)(ptr2 + offset) = entryPoint;
+			*(ulong*)(ptr2 + offset) = entryPoint;
-        offset += 8;
+			offset += 8;
-        ptr2[offset++] = byte.MaxValue;
+			ptr2[offset++] = byte.MaxValue;
-        ptr2[offset++] = 208;
+			ptr2[offset++] = 208;
-        int sentinelOffset = offset + 4;
+			int sentinelOffset = offset + 4;
-        ptr2[offset++] = 72;
+			ptr2[offset++] = 72;
-        ptr2[offset++] = 131;
+			ptr2[offset++] = 131;
-        ptr2[offset++] = 196;
+			ptr2[offset++] = 196;
-        ptr2[offset++] = 8;
+			ptr2[offset++] = 8;
-        ptr2[offset++] = 73;
+			ptr2[offset++] = 73;
-        ptr2[offset++] = 186;
+			ptr2[offset++] = 186;
-        *(ulong*)(ptr2 + offset) = hostRspSlot;
+			*(ulong*)(ptr2 + offset) = hostRspSlot;
-        offset += 8;
+			offset += 8;
-        ptr2[offset++] = 73;
+			ptr2[offset++] = 73;
-        ptr2[offset++] = 139;
+			ptr2[offset++] = 139;
-        ptr2[offset++] = 34;
+			ptr2[offset++] = 34;
-        EmitHostNonvolatileXmmRestore(ptr2, ref offset);
+			EmitHostNonvolatileXmmRestore(ptr2, ref offset);
-        ptr2[offset++] = 65;
+			ptr2[offset++] = 65;
-        ptr2[offset++] = 95;
+			ptr2[offset++] = 95;
-        ptr2[offset++] = 65;
+			ptr2[offset++] = 65;
-        ptr2[offset++] = 94;
+			ptr2[offset++] = 94;
-        ptr2[offset++] = 65;
+			ptr2[offset++] = 65;
-        ptr2[offset++] = 93;
+			ptr2[offset++] = 93;
-        ptr2[offset++] = 65;
+			ptr2[offset++] = 65;
-        ptr2[offset++] = 92;
+			ptr2[offset++] = 92;
-        ptr2[offset++] = 94;
+			ptr2[offset++] = 94;
-        ptr2[offset++] = 95;
+			ptr2[offset++] = 95;
-        ptr2[offset++] = 93;
+			ptr2[offset++] = 93;
-        ptr2[offset++] = 91;
+			ptr2[offset++] = 91;
-        ptr2[offset++] = 195;
+			ptr2[offset++] = 195;
-        ulong sentinel = (ulong)ptr + (ulong)sentinelOffset;
+			ulong sentinel = (ulong)ptr + (ulong)sentinelOffset;
-        ActiveEntryReturnSentinelRip = (ulong)_guestReturnStub;
+			ActiveEntryReturnSentinelRip = (ulong)_guestReturnStub;
-        _activeGuestReturnSlotAddress = context[CpuRegister.Rsp] - 16uL;
+			_activeGuestReturnSlotAddress = context[CpuRegister.Rsp] - 16uL;
-        if (!context.TryWriteUInt64(context[CpuRegister.Rsp], sentinel))
+			if (!context.TryWriteUInt64(context[CpuRegister.Rsp], sentinel))
-        {
+			{
-            reason = $"failed to patch guest thread return sentinel at 0x{context[CpuRegister.Rsp]:X16}";
+				reason = $"failed to patch guest thread return sentinel at 0x{context[CpuRegister.Rsp]:X16}";
-            return GuestNativeCallExitReason.Exception;
+				return GuestNativeCallExitReason.Exception;
-        }
+			}
-        uint oldProtect = default(uint);
+			uint oldProtect = default(uint);
-        if (!VirtualProtect(ptr, stubSize, 64u, &oldProtect))
+			VirtualProtect(ptr, stubSize, 64u, &oldProtect);
-        {
+			FlushInstructionCache(GetCurrentProcess(), ptr, stubSize);
-            reason = $"VirtualProtect failed for guest thread entry stub at 0x{(nint)ptr:X16}";
+			TlsSetValue(_hostRspSlotTlsIndex, (nint)hostRspSlot);
-            return GuestNativeCallExitReason.Exception;
+			ActiveGuestThreadYieldRequested = false;
-        }
+			ActiveGuestThreadYieldReason = null;
-        FlushInstructionCache(GetCurrentProcess(), ptr, stubSize);
+			try
-        ActiveGuestThreadYieldRequested = false;
+			{
-        ActiveGuestThreadYieldReason = null;
+				var nativeReturn = CallNativeEntry(ptr);
-        var nativeReturn = RunGuestEntryStub(ptr, hostRspSlot);
+				if (ActiveGuestThreadYieldRequested)
-        if (ActiveGuestThreadYieldRequested)
+				{
-        {
+					reason = ActiveGuestThreadYieldReason ?? "guest thread blocked";
-            reason = ActiveGuestThreadYieldReason ?? "guest thread blocked";
+					return GuestNativeCallExitReason.Blocked;
-            return GuestNativeCallExitReason.Blocked;
+				}
-        }
+				if (ActiveForcedGuestExit)
-        if (ActiveForcedGuestExit)
+				{
-        {
+					reason = LastError ?? "guest thread forced exit";
-            reason = LastError ?? "guest thread forced exit";
+					return GuestNativeCallExitReason.ForcedExit;
-            return GuestNativeCallExitReason.ForcedExit;
+				}
-        }
+				reason = $"returned 0x{nativeReturn:X8}";
-        reason = $"returned 0x{nativeReturn:X8}";
+				return GuestNativeCallExitReason.Returned;
-        return GuestNativeCallExitReason.Returned;
+			}
-    }
+			catch (AccessViolationException ex)
-    catch (AccessViolationException ex)
+			{
-    {
+				reason = "access violation: " + ex.Message;
-        reason = "access violation: " + ex.Message;
+				return GuestNativeCallExitReason.Exception;
-        return GuestNativeCallExitReason.Exception;
+			}
-    }
+			catch (Exception ex)
-    catch (Exception ex)
+			{
-    {
+				reason = ex.GetType().Name + ": " + ex.Message;
-        reason = ex.GetType().Name + ": " + ex.Message;
+				return GuestNativeCallExitReason.Exception;
-        return GuestNativeCallExitReason.Exception;
+			}
-    }
+		}
-    finally
+		finally
-    {
+		{
-        TlsSetValue(_hostRspSlotTlsIndex, previousHostRspSlotValue);
+			TlsSetValue(_hostRspSlotTlsIndex, previousHostRspSlotValue);
-        RestoreActiveExecutionThread(
+			RestoreActiveExecutionThread(
-            previousActiveBackend,
+				previousActiveBackend,
-            previousActiveContext,
+				previousActiveContext,
-            previousSentinel,
+				previousSentinel,
-            previousReturnSlotAddress,
+				previousReturnSlotAddress,
-            previousForcedExit,
+				previousForcedExit,
-            previousYieldRequested,
+				previousYieldRequested,
-            previousYieldReason);
+				previousYieldReason);
-        VirtualFree(ptr, 0u, 32768u);
+			VirtualFree(ptr, 0u, 32768u);
-    }
+		}
-}
+	}
 
 	private unsafe GuestNativeCallExitReason ExecuteGuestContinuationEntry(
 		CpuContext context,
@@ -3916,12 +3666,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		var previousYieldRequested = _activeGuestThreadYieldRequested;
 		var previousYieldReason = _activeGuestThreadYieldReason;
 		nint previousHostRspSlotValue = TlsGetValue(_hostRspSlotTlsIndex);
-		if (LogThreadMode)
-		{
-			TraceThreadMode(
-				$"continuation_setup name='{name}' resume=0x{entryPoint:X16} stub=0x{(ulong)ptr:X16} " +
-				$"guest_rsp=0x{context[CpuRegister.Rsp]:X16} rsp_slot_prev=0x{(ulong)previousHostRspSlotValue:X}");
-		}
 		try
 		{
 			_activeExecutionBackend = this;
@@ -3984,18 +3728,14 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 				return GuestNativeCallExitReason.Exception;
 			}
 			uint oldProtect = default(uint);
-			if (!VirtualProtect(ptr, stubSize, 64u, &oldProtect))
+			VirtualProtect(ptr, stubSize, 64u, &oldProtect);
-			{
-				reason = $"VirtualProtect failed for guest continuation stub at 0x{(nint)ptr:X16}";
-				return GuestNativeCallExitReason.Exception;
-			}
 			FlushInstructionCache(GetCurrentProcess(), ptr, stubSize);
+			TlsSetValue(_hostRspSlotTlsIndex, (nint)hostRspSlot);
 			ActiveGuestThreadYieldRequested = false;
 			ActiveGuestThreadYieldReason = null;
-
 			try
 			{
-				var nativeReturn = RunGuestEntryStub(ptr, hostRspSlot);
+				var nativeReturn = CallNativeEntry(ptr);
 				if (ActiveGuestThreadYieldRequested)
 				{
 					reason = ActiveGuestThreadYieldReason ?? "guest thread blocked";
@@ -4248,12 +3988,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 				return false;
 			}
 			uint num5 = default(uint);
-			if (!VirtualProtect(ptr, stubSize, 64u, &num5))
+			VirtualProtect(ptr, stubSize, 64u, &num5);
-			{
-				LastError = $"VirtualProtect failed for guest entry stub at 0x{(nint)ptr:X16}";
-				result = OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
-				return false;
-			}
 			FlushInstructionCache(GetCurrentProcess(), ptr, stubSize);
 			if (_hostRspSlotStorage != 0)
 			{
@@ -4271,7 +4006,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 			int num6 = -1;
 			try
 			{
-				num6 = RunGuestEntryStub(ptr, num2);
+				num6 = CallNativeEntry(ptr);
 				Console.Error.WriteLine($"[LOADER][INFO] Guest returned: {num6}");
 				PumpUntilGuestThreadsIdle(context, "entry_return");
 			}
@@ -4298,7 +4033,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 					LastError = "Detected repeating import loop and forced guest unwind to host.";
 				}
 				Console.Error.WriteLine("[LOADER][ERROR] " + LastError);
-				RequestGuestThreadTeardown(3000);
 				return false;
 			}
 			if (num6 == 0)
@@ -4313,7 +4047,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 				LastError = $"Guest entry point returned non-zero: {num6}";
 			}
 			Console.Error.WriteLine("[LOADER][ERROR] " + LastError);
-			RequestGuestThreadTeardown(3000);
 			return false;
 		}
 		finally
@@ -4638,18 +4371,6 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 
 	public unsafe void Dispose()
 	{
-		if (!RequestGuestThreadTeardown(2000))
-		{
-			// A guest worker is still executing native code; freeing the trampolines,
-			// exception-handler stubs, or GC handles under it turns process exit into
-			// an execute-AV / CLR fatal. Leak them — the process is going away anyway.
-			Console.Error.WriteLine(
-				"[LOADER][WARN] Skipping executable stub teardown: guest worker threads are still running.");
-			return;
-		}
-		// Native guest workers park idle once every guest thread has unwound; stop
-		// them before any executable stub or TLS index they reference is freed.
-		DisposeNativeGuestExecutors();
 		ClearImportHandlerTrampolines();
 		_importEntries = Array.Empty<ImportStubEntry>();
 		_runtimeSymbolsByName.Clear();

src/SharpEmu.Core/Loader/SelfLoader.cs

@@ -10,13 +10,11 @@ using SharpEmu.Core;
 using SharpEmu.Core.Cpu;
 using SharpEmu.Core.Memory;
 using SharpEmu.HLE;
-using SharpEmu.Logging;
 
 namespace SharpEmu.Core.Loader;
 
 public sealed class SelfLoader : ISelfLoader
 {
-    private static readonly SharpEmuLogger Log = SharpEmuLog.For("Loader");
     private const uint SelfMagic = 0x4F153D1D;
     private const ulong SelfSegmentFlag = 0x800;
     private const int PageSize = 0x1000;
@@ -157,7 +155,7 @@ public sealed class SelfLoader : ISelfLoader
         }
 
         var tlsModuleId = _nextTlsModuleId == 0 ? 1u : _nextTlsModuleId;
-        Log.Debug($"TLS load_start clear={clearVirtualMemory} next={_nextTlsModuleId} assigned={tlsModuleId}");
+        Console.Error.WriteLine($"[LOADER][TLS] load_start clear={clearVirtualMemory} next={_nextTlsModuleId} assigned={tlsModuleId}");
 
         var loadContext = ParseLayout(imageData);
         var elfHeader = ReadUnmanaged<ElfHeader>(imageData, loadContext.ElfOffset);
@@ -257,7 +255,7 @@ public sealed class SelfLoader : ISelfLoader
         {
             _nextTlsModuleId++;
         }
-        Log.Debug($"TLS load_done assigned={tlsModuleId} next={_nextTlsModuleId}");
+        Console.Error.WriteLine($"[LOADER][TLS] load_done assigned={tlsModuleId} next={_nextTlsModuleId}");
 
         return new SelfImage(
             loadContext.IsSelf,
@@ -405,15 +403,15 @@ public sealed class SelfLoader : ISelfLoader
 
             var virtualAddress = header.VirtualAddress + imageBase;
 
-            Log.Debug($"Segment {index}: VAddr=0x{virtualAddress:X16}, FileSize=0x{header.FileSize:X}, MemSize=0x{header.MemorySize:X}, Align=0x{header.Alignment:X}");
+            Console.Error.WriteLine($"[LOADER] Segment {index}: VAddr=0x{virtualAddress:X16}, FileSize=0x{header.FileSize:X}, MemSize=0x{header.MemorySize:X}, Align=0x{header.Alignment:X}");
             if (header.Alignment > 1)
             {
                 var vaddrMod = virtualAddress % header.Alignment;
                 var offsetMod = header.Offset % header.Alignment;
                 if (vaddrMod != offsetMod)
                 {
-                    Log.Warning(
+                    Console.Error.WriteLine(
-                        $"Segment {index} ELF alignment mismatch! " +
+                        $"[LOADER] WARNING: Segment {index} ELF alignment mismatch! " +
                         $"VAddr=0x{virtualAddress:X}, Offset=0x{header.Offset:X}, Align=0x{header.Alignment:X}, " +
                         $"VAddr%Align=0x{vaddrMod:X}, Offset%Align=0x{offsetMod:X}");
                 }
@@ -673,13 +671,13 @@ public sealed class SelfLoader : ISelfLoader
             {
                 if (descriptor.ValueKind == RelocationValueKind.TlsModuleId)
                 {
-                    Log.Debug(
+                    Console.Error.WriteLine(
-                        $"Patching DTPMOD64 at 0x{descriptor.TargetAddress:X} with module id 0x{targetValue:X}");
+                        $"[LOADER][TLS] Patching DTPMOD64 at 0x{descriptor.TargetAddress:X} with module id 0x{targetValue:X}");
                 }
                 else
                 {
-                    Log.Warning($"!!! CRITICAL !!! Patching address 0x{descriptor.TargetAddress:X} with INVALID value 0x{targetValue:X} for NID {descriptor.ImportNid ?? "(null)"}");
+                    Console.Error.WriteLine($"[LOADER] !!! CRITICAL !!! Patching address 0x{descriptor.TargetAddress:X} with INVALID value 0x{targetValue:X} for NID {descriptor.ImportNid ?? "(null)"}");
-                    Log.Warning($"  SymbolValue=0x{descriptor.SymbolValue:X}, Addend=0x{descriptor.Addend:X}, StubAddress=0x{(addressesByNid.TryGetValue(descriptor.ImportNid ?? "", out var sa) ? sa : 0):X}");
+                    Console.Error.WriteLine($"[LOADER]   SymbolValue=0x{descriptor.SymbolValue:X}, Addend=0x{descriptor.Addend:X}, StubAddress=0x{(addressesByNid.TryGetValue(descriptor.ImportNid ?? "", out var sa) ? sa : 0):X}");
                 }
             }
 
@@ -691,8 +689,8 @@ public sealed class SelfLoader : ISelfLoader
             if (descriptor.TargetAddress >= 0x00000008030FC300UL &&
                 descriptor.TargetAddress <= 0x00000008030FC3F0UL)
             {
-                Log.Debug(
+                Console.Error.WriteLine(
-                    $"[RELOC] target=0x{descriptor.TargetAddress:X16} value=0x{targetValue:X16} addend=0x{descriptor.Addend:X} nid={(descriptor.ImportNid ?? "<sym>")}");
+                    $"[LOADER][RELOC] target=0x{descriptor.TargetAddress:X16} value=0x{targetValue:X16} addend=0x{descriptor.Addend:X} nid={(descriptor.ImportNid ?? "<sym>")}");
             }
         }
 
@@ -785,15 +783,15 @@ public sealed class SelfLoader : ISelfLoader
         {
             if (IsFocusRelocationOffset(relocation.Offset, imageBase))
             {
-                Log.Debug(
+                Console.Error.WriteLine(
-                    $"[FOCUS][SCAN] off=0x{relocation.Offset:X16} type={relocation.Type} sym={relocation.SymbolIndex} addend=0x{relocation.Addend:X}");
+                    $"[LOADER][FOCUS][SCAN] off=0x{relocation.Offset:X16} type={relocation.Type} sym={relocation.SymbolIndex} addend=0x{relocation.Addend:X}");
             }
 
             if (!IsSupportedRelocationType(relocation.Type))
             {
                 if (IsFocusRelocationOffset(relocation.Offset, imageBase))
                 {
-                    Log.Debug($"[FOCUS][SKIP] unsupported type={relocation.Type}");
+                    Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] unsupported type={relocation.Type}");
                 }
                 continue;
             }
@@ -802,7 +800,7 @@ public sealed class SelfLoader : ISelfLoader
             {
                 if (IsFocusRelocationOffset(relocation.Offset, imageBase))
                 {
-                    Log.Debug("[FOCUS][SKIP] target address not mapped");
+                    Console.Error.WriteLine("[LOADER][FOCUS][SKIP] target address not mapped");
                 }
                 continue;
             }
@@ -842,7 +840,7 @@ public sealed class SelfLoader : ISelfLoader
             {
                 if (targetAddress >= FocusRelocGuestStart && targetAddress <= FocusRelocGuestEnd)
                 {
-                    Log.Debug($"[FOCUS][SKIP] symbol read failed index={symbolIndex}");
+                    Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] symbol read failed index={symbolIndex}");
                 }
                 continue;
             }
@@ -854,9 +852,10 @@ public sealed class SelfLoader : ISelfLoader
                 var symbolAddress = ResolveMappedAddressOrFallback(virtualMemory, symbol.Value, imageBase);
                 if (symbolAddress == 0)
                 {
-                    Log.Warning(
+                    Console.Error.WriteLine(
-                        $"Skipping local relocation with invalid symbol value 0x{symbol.Value:X} " +
+                        $"[LOADER] Skipping local relocation with invalid symbol value 0x{symbol.Value:X} " +
                         $"at target 0x{targetAddress:X16}, type={relocation.Type}, sym={symbolIndex}");
+                    continue;
                 }
 
                 descriptors.Add(new RelocationDescriptor(
@@ -874,9 +873,10 @@ public sealed class SelfLoader : ISelfLoader
                 var symbolAddress = ResolveMappedAddressOrFallback(virtualMemory, symbol.Value, imageBase);
                 if (symbolAddress == 0)
                 {
-                    Log.Warning(
+                    Console.Error.WriteLine(
-                        $"Skipping relocation with invalid symbol value 0x{symbol.Value:X} " +
+                        $"[LOADER] Skipping relocation with invalid symbol value 0x{symbol.Value:X} " +
                         $"at target 0x{targetAddress:X16}, type={relocation.Type}, sym={symbolIndex}");
+                    continue;
                 }
 
                 descriptors.Add(new RelocationDescriptor(
@@ -893,7 +893,7 @@ public sealed class SelfLoader : ISelfLoader
             {
                 if (targetAddress >= FocusRelocGuestStart && targetAddress <= FocusRelocGuestEnd)
                 {
-                    Log.Debug($"[FOCUS][SKIP] bind={symbolBind} not importable");
+                    Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] bind={symbolBind} not importable");
                 }
                 continue;
             }
@@ -902,7 +902,7 @@ public sealed class SelfLoader : ISelfLoader
             {
                 if (targetAddress >= FocusRelocGuestStart && targetAddress <= FocusRelocGuestEnd)
                 {
-                    Log.Debug($"[FOCUS][SKIP] symbol name read failed offset={symbol.NameOffset}");
+                    Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] symbol name read failed offset={symbol.NameOffset}");
                 }
                 continue;
             }
@@ -950,8 +950,8 @@ public sealed class SelfLoader : ISelfLoader
 
         if (sectionSymbols > 0 || dynamicSymbols > 0)
         {
-            Log.Info(
+            Console.Error.WriteLine(
-                $"Runtime symbol index populated: section={sectionSymbols}, dynamic={dynamicSymbols}, total={runtimeSymbols.Count}");
+                $"[LOADER] Runtime symbol index populated: section={sectionSymbols}, dynamic={dynamicSymbols}, total={runtimeSymbols.Count}");
         }
     }
 
@@ -1025,8 +1025,8 @@ public sealed class SelfLoader : ISelfLoader
 
         if (preInitializers.Count != 0 || initializers.Count != 0)
         {
-            Log.Info(
+            Console.Error.WriteLine(
-                $"Initializers discovered: preinit={preInitializers.Count}, init={initializers.Count}");
+                $"[LOADER] Initializers discovered: preinit={preInitializers.Count}, init={initializers.Count}");
         }
     }
 
@@ -1409,8 +1409,8 @@ public sealed class SelfLoader : ISelfLoader
 
         var requiredBytes = checked((ulong)orderedImportNids.Count * ImportStubSlotSize);
         var mapSize = AlignUp(Math.Max(requiredBytes, (ulong)PageSize), PageSize);
-        Log.Debug(
+        Console.Error.WriteLine(
-            $"CreateImportStubMapping: nids={orderedImportNids.Count}, required=0x{requiredBytes:X}, map_size=0x{mapSize:X}");
+            $"[LOADER] CreateImportStubMapping: nids={orderedImportNids.Count}, required=0x{requiredBytes:X}, map_size=0x{mapSize:X}");
         if (mapSize > int.MaxValue)
         {
             throw new NotSupportedException("Import stub mapping exceeds 2 GB and is not supported.");
@@ -1842,16 +1842,16 @@ public sealed class SelfLoader : ISelfLoader
         tableBytes = GC.AllocateUninitializedArray<byte>((int)size);
 
         var guestAddr = location + imageBase;
-        Log.Debug($"TryLoadTableBytes: trying guest address 0x{guestAddr:X}");
+        Console.Error.WriteLine($"[LOADER] TryLoadTableBytes: trying guest address 0x{guestAddr:X}");
         if (virtualMemory.TryRead(guestAddr, tableBytes))
         {
-            Log.Debug($"TryLoadTableBytes: loaded from guest memory at 0x{guestAddr:X}");
+            Console.Error.WriteLine($"[LOADER] TryLoadTableBytes: loaded from guest memory at 0x{guestAddr:X}");
             return true;
         }
 
         if (virtualMemory.TryRead(location, tableBytes))
         {
-            Log.Debug($"TryLoadTableBytes: loaded from absolute guest address 0x{location:X}");
+            Console.Error.WriteLine($"[LOADER] TryLoadTableBytes: loaded from absolute guest address 0x{location:X}");
             return true;
         }
 
@@ -1859,11 +1859,11 @@ public sealed class SelfLoader : ISelfLoader
         {
             var slice = elfData.Slice((int)location, (int)size);
             tableBytes = slice.ToArray();
-            Log.Debug($"TryLoadTableBytes: loaded from elfData as file offset at 0x{location:X}");
+            Console.Error.WriteLine($"[LOADER] TryLoadTableBytes: loaded from elfData as file offset at 0x{location:X}");
             return true;
         }
 
-        Log.Warning($"TryLoadTableBytes: FAILED for location 0x{location:X}");
+        Console.Error.WriteLine($"[LOADER] TryLoadTableBytes: FAILED for location 0x{location:X}");
         tableBytes = Array.Empty<byte>();
         return false;
     }
@@ -1920,17 +1920,17 @@ public sealed class SelfLoader : ISelfLoader
 
     private static ulong ResolveMappedAddressOrFallback(IVirtualMemory virtualMemory, ulong address, ulong imageBase)
     {
-        Log.Debug($"ResolveMappedAddressOrFallback addr=0x{address:X} imageBase=0x{imageBase:X16}");
+        Console.Error.WriteLine($"[LOADER][TEST] ResolveMappedAddressOrFallback addr=0x{address:X} imageBase=0x{imageBase:X16}");
 
         if (address == 0)
         {
-            Log.Debug("-> return 0 (null)");
+            Console.Error.WriteLine("[LOADER][TEST] -> return 0 (null)");
             return 0;
         }
 
         if (TryResolveMappedAddress(virtualMemory, address, imageBase, 1, out var resolved))
         {
-            Log.Debug($"-> resolved raw 0x{resolved:X16}");
+            Console.Error.WriteLine($"[LOADER][TEST] -> resolved raw 0x{resolved:X16}");
             return resolved;
         }
 
@@ -1939,18 +1939,18 @@ public sealed class SelfLoader : ISelfLoader
             var rebased = address + imageBase;
             if (TryResolveMappedAddress(virtualMemory, rebased, imageBase, 1, out var resolvedRebased))
             {
-                Log.Debug($"-> resolved rebased 0x{resolvedRebased:X16}");
+                Console.Error.WriteLine($"[LOADER][TEST] -> resolved rebased 0x{resolvedRebased:X16}");
                 return resolvedRebased;
             }
         }
 
         if (address < 0x10000)
         {
-            Log.Debug($"-> reject small 0x{address:X}");
+            Console.Error.WriteLine($"[LOADER][TEST] -> reject small 0x{address:X}");
             return 0;
         }
 
-        Log.Debug($"-> fallback raw 0x{address:X}");
+        Console.Error.WriteLine($"[LOADER][TEST] -> fallback raw 0x{address:X}");
         return address;
     }
 

src/SharpEmu.Core/Memory/PhysicalVirtualMemory.cs

@@ -4,19 +4,14 @@
 using System.Runtime.InteropServices;
 using SharpEmu.Core.Loader;
 using SharpEmu.HLE;
-using SharpEmu.Logging;
 
 namespace SharpEmu.Core.Memory;
 
 public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryAllocator, IDisposable
 {
-    private static readonly SharpEmuLogger Log = SharpEmuLog.For("VMEM");
-
     private readonly ReaderWriterLockSlim _gate = new(LockRecursionPolicy.SupportsRecursion);
     private readonly object _guestAllocationGate = new();
-    private readonly object _allocationSearchHintGate = new();
     private readonly List<MemoryRegion> _regions = new();
-    private readonly Dictionary<(ulong DesiredAddress, ulong Alignment, bool Executable), ulong> _allocationSearchHints = new();
     private readonly Dictionary<ulong, ProgramHeaderFlags> _pageProtections = new();
     private bool _disposed;
     private const ulong PageSize = 0x1000;
@@ -24,8 +19,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
     private const ulong GuestAllocationArenaSize = 0x0100_0000;
     private const ulong GuestAllocationArenaStartOffset = PageSize;
     private const ulong LargeDataReserveThreshold = 0x4000_0000UL; // 1 GiB
-    private const ulong FullCommitRegionLimit = 4UL << 30;
+    private const ulong LazyReservePrimeBytes = 0x5000_0000UL; // 1.25 GiB
-    private const ulong DefaultLazyReservePrimeBytes = 0x0400_0000UL; // 64 MiB
     private const ulong LazyReservePrimeChunkBytes = 0x0200_0000UL; // 32 MiB
 
     private const uint MEM_COMMIT = 0x1000;
@@ -41,7 +35,6 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
 
     private ulong _guestAllocationArenaBase;
     private ulong _guestAllocationOffset;
-    private static readonly ulong LazyReservePrimeBytes = ResolveLazyReservePrimeBytes();
 
     [DllImport("kernel32.dll", SetLastError = true)]
     private static extern void* VirtualAlloc(void* lpAddress, nuint dwSize, uint flAllocationType, uint flProtect);
@@ -58,11 +51,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
     private static extern nuint VirtualQuery(void* lpAddress, out MemoryBasicInformation64 lpBuffer, nuint dwLength);
 
     [DllImport("kernel32.dll")]
-    private static extern void* GetCurrentProcess();
+    private static extern void FlushInstructionCache(void* hProcess, void* lpBaseAddress, nuint dwSize);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool FlushInstructionCache(void* hProcess, void* lpBaseAddress, nuint dwSize);
 
     public bool TryAllocateAtExact(ulong desiredAddress, ulong size, bool executable, out ulong actualAddress)
     {
@@ -92,7 +81,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         _gate.EnterWriteLock();
         try
         {
-            InsertRegionSorted(new MemoryRegion
+            _regions.Add(new MemoryRegion
             {
                 VirtualAddress = actualAddress,
                 Size = alignedSize,
@@ -107,7 +96,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         }
 
         var allocationKind = executable ? "executable memory" : "data memory";
-        TraceVmem($"Allocated exact {allocationKind}: 0x{actualAddress:X16} - 0x{actualAddress + alignedSize:X16} ({alignedSize} bytes)");
+        Console.Error.WriteLine($"[VMEM] Allocated exact {allocationKind}: 0x{actualAddress:X16} - 0x{actualAddress + alignedSize:X16} ({alignedSize} bytes)");
         return true;
     }
 
@@ -121,9 +110,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         var protection = executable ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE;
         var allocationType = MEM_COMMIT | MEM_RESERVE;
         var reservedOnly = false;
-        var preferReserveOnly = !executable &&
+        var preferReserveOnly = !executable && alignedSize >= LargeDataReserveThreshold;
-            alignedSize >= LargeDataReserveThreshold &&
-            alignedSize > FullCommitRegionLimit;
 
         void* result = null;
         if (preferReserveOnly)
@@ -152,7 +139,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
                 throw new InvalidOperationException($"Failed to allocate exact mapping at 0x{desiredAddress:X16} ({alignedSize} bytes)");
             }
 
-            TraceVmem($"Could not allocate at 0x{desiredAddress:X16}, trying any address...");
+            Console.Error.WriteLine($"[VMEM] Could not allocate at 0x{desiredAddress:X16}, trying any address...");
             result = VirtualAlloc(null, (nuint)alignedSize, allocationType, protection);
 
             if (result == null)
@@ -206,12 +193,12 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
                     lazyPrimeState = committedBytes == primeBytes
                         ? $"ok:{committedBytes:X}"
                         : $"partial:{committedBytes:X}/{primeBytes:X}";
-                    TraceVmem($"Primed lazy region: 0x{actualAddress:X16} - 0x{actualAddress + committedBytes:X16} ({committedBytes} bytes)");
+                    Console.Error.WriteLine($"[VMEM] Primed lazy region: 0x{actualAddress:X16} - 0x{actualAddress + committedBytes:X16} ({committedBytes} bytes)");
                 }
                 else
                 {
                     lazyPrimeState = $"fail:{primeBytes:X}";
-                    TraceVmem($"Failed to prime lazy region at 0x{actualAddress:X16} ({primeBytes} bytes), continuing with on-demand commit");
+                    Console.Error.WriteLine($"[VMEM] Failed to prime lazy region at 0x{actualAddress:X16} ({primeBytes} bytes), continuing with on-demand commit");
                 }
             }
             else
@@ -223,7 +210,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         _gate.EnterWriteLock();
         try
         {
-            InsertRegionSorted(new MemoryRegion
+            _regions.Add(new MemoryRegion
             {
                 VirtualAddress = actualAddress,
                 Size = alignedSize,
@@ -240,7 +227,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         var allocationKind = reservedOnly
             ? "reserved data memory (lazy commit)"
             : (executable ? "executable memory" : "data memory");
-        TraceVmem($"Allocated {allocationKind}: 0x{actualAddress:X16} - 0x{actualAddress + alignedSize:X16} ({alignedSize} bytes) lazy_prime={lazyPrimeState}");
+        Console.Error.WriteLine($"[VMEM] Allocated {allocationKind}: 0x{actualAddress:X16} - 0x{actualAddress + alignedSize:X16} ({alignedSize} bytes) lazy_prime={lazyPrimeState}");
 
         return actualAddress;
     }
@@ -260,8 +247,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
 
         var alignedSize = AlignUp(size, PageSize);
         var effectiveAlignment = Math.Max(PageSize, alignment == 0 ? PageSize : alignment);
-        var requestedCursor = AlignUp(desiredAddress, effectiveAlignment);
+        var cursor = AlignUp(desiredAddress, effectiveAlignment);
-        var cursor = GetAllocationSearchCursor(desiredAddress, requestedCursor, effectiveAlignment, executable);
 
         for (var attempt = 0; attempt < 0x10000; attempt++)
         {
@@ -281,7 +267,6 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
                 actualAddress = AllocateAt(cursor, alignedSize, executable, allowAlternative: false);
                 if (actualAddress == cursor)
                 {
-                    UpdateAllocationSearchCursor(desiredAddress, effectiveAlignment, executable, actualAddress + alignedSize);
                     return true;
                 }
 
@@ -349,10 +334,6 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
                 }
                 _regions.Clear();
                 _pageProtections.Clear();
-                lock (_allocationSearchHintGate)
-                {
-                    _allocationSearchHints.Clear();
-                }
             }
             finally
             {
@@ -409,7 +390,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
 
             ApplySegmentProtection(mapStart, mapEnd, protection);
 
-            TraceVmem($"Mapped segment: 0x{virtualAddress:X16} - 0x{virtualAddress + memorySize:X16} (file: {fileData.Length} bytes, prot: {protection})");
+            Console.Error.WriteLine($"[VMEM] Mapped segment: 0x{virtualAddress:X16} - 0x{virtualAddress + memorySize:X16} (file: {fileData.Length} bytes, prot: {protection})");
         }
         finally
         {
@@ -458,7 +439,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
 
         if ((flags & ProgramHeaderFlags.Execute) != 0)
         {
-            FlushInstructionCache(GetCurrentProcess(), (void*)address, (nuint)size);
+            FlushInstructionCache(null, (void*)address, (nuint)size);
         }
     }
 
@@ -492,34 +473,30 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         _gate.EnterReadLock();
         try
         {
-            var region = FindRegion(virtualAddress, (ulong)destination.Length);
+            foreach (var region in _regions)
-            if (region is not null &&
-                TryResolveRegionOffset(
-                    virtualAddress,
-                    (ulong)destination.Length,
-                    region,
-                    out var offset))
             {
-                var srcPtr = (void*)(region.VirtualAddress + offset);
+                if (TryResolveRegionOffset(virtualAddress, (ulong)destination.Length, region, out var offset))
-                if (destination.IsEmpty)
                 {
-                    return true;
+                    var srcPtr = (void*)(region.VirtualAddress + offset);
-                }
+                    if (destination.IsEmpty)
-
-                if (region.IsReservedOnly)
-                {
-                    if (!EnsureRangeCommitted((ulong)srcPtr, (ulong)destination.Length, region))
                     {
-                        return false;
+                        return true;
+                    }
+
+                    if (region.IsReservedOnly)
+                    {
+                        if (!EnsureRangeCommitted((ulong)srcPtr, (ulong)destination.Length, region))
+                        {
+                            return false;
+                        }
+                    }
+
+                    if (!CanReadWithoutProtectionChange((ulong)srcPtr, (ulong)destination.Length, region))
+                    {
+                        requiresExclusiveAccess = true;
+                        break;
                     }
-                }
 
-                if (!CanReadWithoutProtectionChange((ulong)srcPtr, (ulong)destination.Length, region))
-                {
-                    requiresExclusiveAccess = true;
-                }
-                else
-                {
                     fixed (byte* destPtr = destination)
                     {
                         Buffer.MemoryCopy(srcPtr, destPtr, (nuint)destination.Length, (nuint)destination.Length);
@@ -556,34 +533,30 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         _gate.EnterReadLock();
         try
         {
-            var region = FindRegion(virtualAddress, (ulong)source.Length);
+            foreach (var region in _regions)
-            if (region is not null &&
-                TryResolveRegionOffset(
-                    virtualAddress,
-                    (ulong)source.Length,
-                    region,
-                    out var offset))
             {
-                var destPtr = (void*)(region.VirtualAddress + offset);
+                if (TryResolveRegionOffset(virtualAddress, (ulong)source.Length, region, out var offset))
-                if (source.IsEmpty)
                 {
-                    return true;
+                    var destPtr = (void*)(region.VirtualAddress + offset);
-                }
+                    if (source.IsEmpty)
-
-                if (region.IsReservedOnly)
-                {
-                    if (!EnsureRangeCommitted((ulong)destPtr, (ulong)source.Length, region))
                     {
-                        return false;
+                        return true;
+                    }
+
+                    if (region.IsReservedOnly)
+                    {
+                        if (!EnsureRangeCommitted((ulong)destPtr, (ulong)source.Length, region))
+                        {
+                            return false;
+                        }
+                    }
+
+                    if (!CanWriteWithoutProtectionChange((ulong)destPtr, (ulong)source.Length, region))
+                    {
+                        requiresExclusiveAccess = true;
+                        break;
                     }
-                }
 
-                if (!CanWriteWithoutProtectionChange((ulong)destPtr, (ulong)source.Length, region))
-                {
-                    requiresExclusiveAccess = true;
-                }
-                else
-                {
                     fixed (byte* srcPtr = source)
                     {
                         Buffer.MemoryCopy(srcPtr, destPtr, (nuint)source.Length, (nuint)source.Length);
@@ -616,14 +589,13 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
 
     private bool TryReadExclusive(ulong virtualAddress, Span<byte> destination)
     {
-        var region = FindRegion(virtualAddress, (ulong)destination.Length);
+        foreach (var region in _regions)
-        if (region is not null &&
-            TryResolveRegionOffset(
-                virtualAddress,
-                (ulong)destination.Length,
-                region,
-                out var offset))
         {
+            if (!TryResolveRegionOffset(virtualAddress, (ulong)destination.Length, region, out var offset))
+            {
+                continue;
+            }
+
             var srcPtr = (void*)(region.VirtualAddress + offset);
             if (!EnsureRangeCommitted((ulong)srcPtr, (ulong)destination.Length, region))
             {
@@ -665,14 +637,13 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
 
     private bool TryWriteExclusive(ulong virtualAddress, ReadOnlySpan<byte> source)
     {
-        var region = FindRegion(virtualAddress, (ulong)source.Length);
+        foreach (var region in _regions)
-        if (region is not null &&
-            TryResolveRegionOffset(
-                virtualAddress,
-                (ulong)source.Length,
-                region,
-                out var offset))
         {
+            if (!TryResolveRegionOffset(virtualAddress, (ulong)source.Length, region, out var offset))
+            {
+                continue;
+            }
+
             var destPtr = (void*)(region.VirtualAddress + offset);
             if (!EnsureRangeCommitted((ulong)destPtr, (ulong)source.Length, region))
             {
@@ -706,7 +677,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
                 VirtualProtect(destPtr, (nuint)source.Length, oldProtect, out _);
                 if (IsExecutableProtection(oldProtect))
                 {
-                    FlushInstructionCache(GetCurrentProcess(), destPtr, (nuint)source.Length);
+                    FlushInstructionCache(null, destPtr, (nuint)source.Length);
                 }
             }
 
@@ -728,9 +699,15 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         _gate.EnterReadLock();
         try
         {
-            return FindRegion(virtualAddress, 1) is not null
+            foreach (var region in _regions)
-                ? (void*)virtualAddress
+            {
-                : null;
+                if (virtualAddress >= region.VirtualAddress &&
+                    virtualAddress < region.VirtualAddress + region.Size)
+                {
+                    return (void*)virtualAddress;
+                }
+            }
+            return null;
         }
         finally
         {
@@ -743,7 +720,14 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         _gate.EnterReadLock();
         try
         {
-            return FindRegion(virtualAddress, size) is not null;
+            foreach (var region in _regions)
+            {
+                if (TryResolveRegionOffset(virtualAddress, size, region, out _))
+                {
+                    return true;
+                }
+            }
+            return false;
         }
         finally
         {
@@ -753,48 +737,14 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
 
     private MemoryRegion? FindRegion(ulong address, ulong size)
     {
-        var low = 0;
+        foreach (var region in _regions)
-        var high = _regions.Count - 1;
-        MemoryRegion? candidate = null;
-        while (low <= high)
         {
-            var middle = low + ((high - low) >> 1);
+            if (TryResolveRegionOffset(address, size, region, out _))
-            var region = _regions[middle];
-            if (region.VirtualAddress <= address)
             {
-                candidate = region;
+                return region;
-                low = middle + 1;
-            }
-            else
-            {
-                high = middle - 1;
             }
         }
-
+        return null;
-        return candidate is not null &&
-            TryResolveRegionOffset(address, size, candidate, out _)
-                ? candidate
-                : null;
-    }
-
-    private void InsertRegionSorted(MemoryRegion region)
-    {
-        var low = 0;
-        var high = _regions.Count;
-        while (low < high)
-        {
-            var middle = low + ((high - low) >> 1);
-            if (_regions[middle].VirtualAddress < region.VirtualAddress)
-            {
-                low = middle + 1;
-            }
-            else
-            {
-                high = middle;
-            }
-        }
-
-        _regions.Insert(low, region);
     }
 
     private bool TryGetOverlappingRegionEnd(ulong address, ulong size, out ulong overlapEnd)
@@ -812,16 +762,6 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
             foreach (var region in _regions)
             {
                 var regionEnd = region.VirtualAddress + region.Size;
-                if (region.VirtualAddress >= end)
-                {
-                    break;
-                }
-
-                if (regionEnd <= address)
-                {
-                    continue;
-                }
-
                 if (address < regionEnd && region.VirtualAddress < end)
                 {
                     overlapEnd = Math.Max(overlapEnd, regionEnd);
@@ -836,37 +776,6 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         return overlapEnd != 0;
     }
 
-    private ulong GetAllocationSearchCursor(
-        ulong desiredAddress,
-        ulong requestedCursor,
-        ulong alignment,
-        bool executable)
-    {
-        lock (_allocationSearchHintGate)
-        {
-            var key = (desiredAddress, alignment, executable);
-            if (_allocationSearchHints.TryGetValue(key, out var hintedCursor) &&
-                hintedCursor > requestedCursor)
-            {
-                return AlignUp(hintedCursor, alignment);
-            }
-        }
-
-        return requestedCursor;
-    }
-
-    private void UpdateAllocationSearchCursor(
-        ulong desiredAddress,
-        ulong alignment,
-        bool executable,
-        ulong nextCursor)
-    {
-        lock (_allocationSearchHintGate)
-        {
-            _allocationSearchHints[(desiredAddress, alignment, executable)] = AlignUp(nextCursor, alignment);
-        }
-    }
-
     private static bool TryResolveRegionOffset(ulong address, ulong size, MemoryRegion region, out ulong offset)
     {
         offset = 0;
@@ -1035,29 +944,6 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
         return checked((value + mask) & ~mask);
     }
 
-    private static ulong ResolveLazyReservePrimeBytes()
-    {
-        var configured = Environment.GetEnvironmentVariable("SHARPEMU_LAZY_RESERVE_PRIME_MB");
-        if (ulong.TryParse(configured, out var megabytes))
-        {
-            return megabytes == 0
-                ? 0
-                : checked(Math.Min(megabytes, 4096UL) * 1024UL * 1024UL);
-        }
-
-        return DefaultLazyReservePrimeBytes;
-    }
-
-    private static void TraceVmem(string message)
-    {
-        if (!string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_VMEM"), "1", StringComparison.Ordinal))
-        {
-            return;
-        }
-
-        Log.Debug(message);
-    }
-
     public void Dispose()
     {
         if (!_disposed)

src/SharpEmu.Core/Runtime/SharpEmuRuntime.cs

@@ -11,19 +11,15 @@ using SharpEmu.Libs.VideoOut;
 using SharpEmu.Libs.Kernel;
 using SharpEmu.Libs.AppContent;
 using SharpEmu.Libs.SaveData;
-using SharpEmu.Logging;
 using System.Buffers.Binary;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using System.IO;
 
 namespace SharpEmu.Core.Runtime;
 
 public sealed class SharpEmuRuntime : ISharpEmuRuntime
 {
-    private static readonly SharpEmuLogger Log = SharpEmuLog.For("Runtime");
-
     private readonly record struct LoadedModuleImage(string Path, SelfImage Image);
 
     private static readonly HashSet<string> PreloadSkipModules = new(StringComparer.OrdinalIgnoreCase)
@@ -132,7 +128,7 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
     {
         var normalizedEbootPath = Path.GetFullPath(ebootPath);
         using var app0Binding = BindApp0Root(normalizedEbootPath);
-        Log.Info($"Loading: {ebootPath}");
+        Console.Error.WriteLine($"[RUNTIME] Loading: {ebootPath}");
         LastExecutionDiagnostics = null;
         LastExecutionTrace = null;
         LastSessionSummary = null;
@@ -140,12 +136,11 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
         LastMilestoneLog = null;
         KernelModuleRegistry.Reset();
         var image = LoadImage(normalizedEbootPath);
-        VideoOutExports.ConfigureApplicationInfo(image.Title, image.TitleId, image.Version, BuildInfo.CommitSha);
+        VideoOutExports.ConfigureApplicationInfo(image.Title, image.TitleId, image.Version);
         SaveDataExports.ConfigureApplicationInfo(image.TitleId);
-        LogAppBundleInfo(normalizedEbootPath, image);
         RegisterLoadedModule(normalizedEbootPath, image, isMain: true, isSystemModule: false);
         KernelRuntimeCompatExports.ConfigureProcessProcParamAddress(image.ProcParamAddress);
-        Log.Info($"Entry: 0x{image.EntryPoint:X16}");
+        Console.Error.WriteLine($"[RUNTIME] Entry: 0x{image.EntryPoint:X16}");
         var generation = image.ElfHeader.AbiVersion == 2 ? Generation.Gen5 : Generation.Gen4;
         var activeImportStubs = new Dictionary<ulong, string>(image.ImportStubs);
         var activeRuntimeSymbols = new Dictionary<string, ulong>(image.RuntimeSymbols, StringComparer.Ordinal);
@@ -168,7 +163,7 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
             processImageName);
         if (initializerResult is { } failedInitializerResult)
         {
-            Log.Error($"Initializer dispatch failed: {failedInitializerResult}");
+            Console.Error.WriteLine($"[RUNTIME] Initializer dispatch failed: {failedInitializerResult}");
             LastExecutionTrace = _cpuDispatcher.LastImportResolutionTrace;
             LastMilestoneLog = _cpuDispatcher.LastMilestoneLog;
             LastSessionSummary = BuildSessionSummary(_cpuDispatcher.LastSessionSummary);
@@ -176,8 +171,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
             return failedInitializerResult;
         }
 
-        Log.Info($"Dispatching, gen: {generation}");
+        Console.Error.WriteLine($"[RUNTIME] Dispatching, gen: {generation}");
-        Log.Debug($"About to call DispatchEntry with entryPoint=0x{image.EntryPoint:X16}");
+        Console.Error.WriteLine($"[RUNTIME] About to call DispatchEntry with entryPoint=0x{image.EntryPoint:X16}");
 
         var result = _cpuDispatcher.DispatchEntry(
             image.EntryPoint,
@@ -187,8 +182,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
             processImageName,
             _cpuExecutionOptions);
 
-        Log.Info($"DispatchEntry returned: {result}");
+        Console.Error.WriteLine($"[RUNTIME] DispatchEntry returned: {result}");
-        Log.Info($"Dispatch result: {result}");
+        Console.Error.WriteLine($"[RUNTIME] Dispatch result: {result}");
         LastExecutionTrace = _cpuDispatcher.LastImportResolutionTrace;
         LastMilestoneLog = _cpuDispatcher.LastMilestoneLog;
         LastSessionSummary = BuildSessionSummary(_cpuDispatcher.LastSessionSummary);
@@ -359,66 +354,6 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
         return result;
     }
 
-    private static void LogAppBundleInfo(string ebootPath, SelfImage image)
-    {
-        var executableName = Path.GetFileName(ebootPath);
-        if (string.IsNullOrWhiteSpace(executableName))
-        {
-            executableName = "eboot.bin";
-        }
-
-        var displayName = string.IsNullOrWhiteSpace(image.Title) ? "(unknown)" : image.Title!.Trim();
-        var titleId = string.IsNullOrWhiteSpace(image.TitleId) ? "(unknown)" : image.TitleId!.Trim();
-        var version = string.IsNullOrWhiteSpace(image.Version) ? "(unknown)" : image.Version!.Trim();
-        var contentId = ResolveContentId(Path.GetDirectoryName(ebootPath)) ?? "(unknown)";
-
-        var builder = new StringBuilder();
-        builder.AppendLine("App bundle info:");
-        builder.AppendLine($"- Display name: {displayName}");
-        builder.AppendLine($"- Version: {version}");
-        builder.AppendLine($"- Title ID: {titleId}");
-        builder.AppendLine($"- Content ID: {contentId}");
-        builder.AppendLine($"- Executable: {executableName}");
-        builder.Append("- Platform: PlayStation 5");
-        Log.Info(builder.ToString());
-    }
-
-    private static string? ResolveContentId(string? bundleRoot)
-    {
-        if (string.IsNullOrEmpty(bundleRoot))
-        {
-            return null;
-        }
-
-        foreach (var candidate in new[]
-        {
-            Path.Combine(bundleRoot, "sce_sys", "param.json"),
-            Path.Combine(bundleRoot, "param.json"),
-        })
-        {
-            if (!File.Exists(candidate))
-            {
-                continue;
-            }
-
-            try
-            {
-                using var doc = System.Text.Json.JsonDocument.Parse(File.ReadAllBytes(candidate));
-                if (doc.RootElement.TryGetProperty("contentId", out var contentId))
-                {
-                    return contentId.GetString();
-                }
-            }
-            catch (Exception ex) when (ex is IOException or System.Text.Json.JsonException)
-            {
-            }
-
-            break;
-        }
-
-        return null;
-    }
-
     private static App0BindingScope? BindApp0Root(string normalizedEbootPath)
     {
         const string app0VariableName = "SHARPEMU_APP0_DIR";
@@ -499,8 +434,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
                 moduleName = $"module#{i}";
             }
 
-            Log.Info(
+            Console.Error.WriteLine(
-                $"Starting module {moduleName}: dt_init=0x{initEntryPoint:X16}");
+                $"[RUNTIME] Starting module {moduleName}: dt_init=0x{initEntryPoint:X16}");
 
             var result = _cpuDispatcher.DispatchModuleInitializer(
                 initEntryPoint,
@@ -511,8 +446,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
                 _cpuExecutionOptions);
             if (result != OrbisGen2Result.ORBIS_GEN2_OK)
             {
-                Log.Error(
+                Console.Error.WriteLine(
-                    $"Module start failed: {moduleName} -> {result}");
+                    $"[RUNTIME] Module start failed: {moduleName} -> {result}");
                 return result;
             }
         }
@@ -533,8 +468,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
             return null;
         }
 
-        Log.Info(
+        Console.Error.WriteLine(
-            $"Running initializers for {label}: preinit={image.PreInitializerFunctions.Count}, init={image.InitializerFunctions.Count}");
+            $"[RUNTIME] Running initializers for {label}: preinit={image.PreInitializerFunctions.Count}, init={image.InitializerFunctions.Count}");
 
         var result = RunInitializerList(
             $"{label}:preinit",
@@ -573,8 +508,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
                 continue;
             }
 
-            Log.Debug(
+            Console.Error.WriteLine(
-                $"  Initializer {label}[{i}] -> 0x{initializerAddress:X16}");
+                $"[RUNTIME]   Initializer {label}[{i}] -> 0x{initializerAddress:X16}");
 
             var result = _cpuDispatcher.DispatchEntry(
                 initializerAddress,
@@ -608,7 +543,6 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
         {
             Path.Combine(ebootDirectory, "sce_module"),
             Path.Combine(ebootDirectory, "sce_modules"),
-            Path.Combine(ebootDirectory, "Media", "Modules"),
         }
         .Distinct(StringComparer.OrdinalIgnoreCase)
         .Where(Directory.Exists)
@@ -620,9 +554,7 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
         }
 
         var allModulePaths = moduleDirectories
-            .SelectMany(directory => Directory
+            .SelectMany(Directory.EnumerateFiles)
-                .EnumerateFiles(directory)
-                .OrderBy(path => path, StringComparer.OrdinalIgnoreCase))
             .Where(path =>
             {
                 var extension = Path.GetExtension(path);
@@ -630,6 +562,7 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
                        string.Equals(extension, ".sprx", StringComparison.OrdinalIgnoreCase);
             })
             .Distinct(StringComparer.OrdinalIgnoreCase)
+            .OrderBy(path => path, StringComparer.OrdinalIgnoreCase)
             .ToArray();
 
         var modulePaths = allModulePaths
@@ -642,7 +575,7 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
             .ToArray();
         if (skippedModules.Length > 0)
         {
-            Log.Info($"Skipping {skippedModules.Length} core module(s): {string.Join(", ", skippedModules)}");
+            Console.Error.WriteLine($"[RUNTIME] Skipping {skippedModules.Length} core module(s): {string.Join(", ", skippedModules)}");
         }
 
         if (modulePaths.Length == 0)
@@ -650,8 +583,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
             return loadedImages;
         }
 
-        Log.Debug($"Module search directories: {string.Join(", ", moduleDirectories)}");
+        Console.Error.WriteLine($"[RUNTIME] Module search directories: {string.Join(", ", moduleDirectories)}");
-        Log.Info($"Loading {modulePaths.Length} module(s)...");
+        Console.Error.WriteLine($"[RUNTIME] Loading {modulePaths.Length} module(s)...");
         var loadedModules = 0;
         var failedModules = 0;
         var mergedImportCount = 0;
@@ -686,18 +619,18 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
                 loadedImages.Add(new LoadedModuleImage(modulePath, moduleImage));
                 loadedModules++;
 
-                Log.Info(
+                Console.Error.WriteLine(
-                    $"Loaded module {Path.GetFileName(modulePath)}: entry=0x{moduleImage.EntryPoint:X16}, imports={moduleImage.ImportStubs.Count}, symbols={moduleImage.RuntimeSymbols.Count}");
+                    $"[RUNTIME] Loaded module {Path.GetFileName(modulePath)}: entry=0x{moduleImage.EntryPoint:X16}, imports={moduleImage.ImportStubs.Count}, symbols={moduleImage.RuntimeSymbols.Count}");
             }
             catch (Exception ex)
             {
                 failedModules++;
-                Log.Error($"Module load failed: {modulePath} ({ex.GetType().Name}: {ex.Message})", ex);
+                Console.Error.WriteLine($"[RUNTIME] Module load failed: {modulePath} ({ex.GetType().Name}: {ex.Message})");
             }
         }
 
-        Log.Info(
+        Console.Error.WriteLine(
-            $"Module preload summary: loaded={loadedModules}, failed={failedModules}, merged_imports={mergedImportCount}, merged_symbols={mergedSymbolCount}");
+            $"[RUNTIME] Module preload summary: loaded={loadedModules}, failed={failedModules}, merged_imports={mergedImportCount}, merged_symbols={mergedSymbolCount}");
         return loadedImages;
     }
 
@@ -717,8 +650,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
 
         if (rebound != 0 || unresolved != 0)
         {
-            Log.Info(
+            Console.Error.WriteLine(
-                $"Imported data rebind: rebound={rebound}, unresolved={unresolved}");
+                $"[RUNTIME] Imported data rebind: rebound={rebound}, unresolved={unresolved}");
         }
     }
 
@@ -750,8 +683,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
             {
                 if (logRebind)
                 {
-                    Log.Warning(
+                    Console.Error.WriteLine(
-                        $"Imported data unresolved: nid={relocation.Nid} target=0x{relocation.TargetAddress:X16} addend=0x{unchecked((ulong)relocation.Addend):X16}");
+                        $"[RUNTIME] Imported data unresolved: nid={relocation.Nid} target=0x{relocation.TargetAddress:X16} addend=0x{unchecked((ulong)relocation.Addend):X16}");
                 }
 
                 unresolved++;
@@ -763,8 +696,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
             {
                 if (logRebind)
                 {
-                    Log.Error(
+                    Console.Error.WriteLine(
-                        $"Imported data write-failed: nid={relocation.Nid} target=0x{relocation.TargetAddress:X16} value=0x{reboundValue:X16}");
+                        $"[RUNTIME] Imported data write-failed: nid={relocation.Nid} target=0x{relocation.TargetAddress:X16} value=0x{reboundValue:X16}");
                 }
 
                 unresolved++;
@@ -773,8 +706,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
 
             if (logRebind)
             {
-                Log.Debug(
+                Console.Error.WriteLine(
-                    $"Imported data rebound: nid={relocation.Nid} target=0x{relocation.TargetAddress:X16} value=0x{reboundValue:X16}");
+                    $"[RUNTIME] Imported data rebound: nid={relocation.Nid} target=0x{relocation.TargetAddress:X16} value=0x{reboundValue:X16}");
             }
 
             rebound++;
@@ -810,8 +743,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
             {
                 if (!string.Equals(existingNid, nid, StringComparison.Ordinal))
                 {
-                    Log.Warning(
+                    Console.Error.WriteLine(
-                        $"Import stub conflict at 0x{address:X16}: keep={existingNid}, skip={nid} ({Path.GetFileName(modulePath)})");
+                        $"[RUNTIME] Import stub conflict at 0x{address:X16}: keep={existingNid}, skip={nid} ({Path.GetFileName(modulePath)})");
                 }
 
                 continue;
@@ -920,8 +853,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
             image.EntryPoint,
             isMain,
             isSystemModule);
-        Log.Info(
+        Console.Error.WriteLine(
-            $"Registered module handle={handle} name={Path.GetFileName(modulePath)} base=0x{baseAddress:X16} size=0x{size:X16}");
+            $"[RUNTIME] Registered module handle={handle} name={Path.GetFileName(modulePath)} base=0x{baseAddress:X16} size=0x{size:X16}");
     }
 
     private static bool TryComputeImageRange(SelfImage image, out ulong baseAddress, out ulong size)

src/SharpEmu.Core/SharpEmu.Core.csproj

@@ -1,4 +1,4 @@
-<!--
+<!--
 Copyright (C) 2026 SharpEmu Emulator Project
 SPDX-License-Identifier: GPL-2.0-or-later
 -->
@@ -14,10 +14,6 @@ SPDX-License-Identifier: GPL-2.0-or-later
     <PackageReference Include="Iced" />
   </ItemGroup>
 
-  <PropertyGroup>
-    <NoWarn>$(NoWarn);1591</NoWarn>
-  </PropertyGroup>
-
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>

src/SharpEmu.Core/packages.lock.json

@@ -65,17 +65,13 @@
         "contentHash": "Iy22JopynbOJ32vA0lBhFEzGi65GQJBuJHYBYRBpydrDpNoTiHnjIXfA65Gu+8qsOr/ZEoIF8r9aHCgAXuO6DA=="
       },
       "sharpemu.hle": {
-        "type": "Project",
+        "type": "Project"
-        "dependencies": {
-          "SharpEmu.Logging": "[1.0.0, )"
-        }
       },
       "sharpemu.libs": {
         "type": "Project",
         "dependencies": {
           "SharpEmu.HLE": "[1.0.0, )",
           "Silk.NET.Vulkan": "[2.23.0, )",
-          "Silk.NET.Vulkan.Extensions.EXT": "[2.23.0, )",
           "Silk.NET.Vulkan.Extensions.KHR": "[2.23.0, )",
           "Silk.NET.Windowing": "[2.23.0, )"
         }
@@ -92,16 +88,6 @@
           "Silk.NET.Core": "2.23.0"
         }
       },
-      "Silk.NET.Vulkan.Extensions.EXT": {
-        "type": "CentralTransitive",
-        "requested": "[2.23.0, )",
-        "resolved": "2.23.0",
-        "contentHash": "+Oth189ksRiL6HvGCwIdnsYHawqrbO8y49u1H61z3wsfcHhQZeVDYe/wF5LD7fk3NcdgDvwFD3mLm1QWhdZySw==",
-        "dependencies": {
-          "Silk.NET.Core": "2.23.0",
-          "Silk.NET.Vulkan": "2.23.0"
-        }
-      },
       "Silk.NET.Vulkan.Extensions.KHR": {
         "type": "CentralTransitive",
         "requested": "[2.23.0, )",

src/SharpEmu.GUI/App.axaml

@@ -1,198 +0,0 @@
-<!--
-Copyright (C) 2026 SharpEmu Emulator Project
-SPDX-License-Identifier: GPL-2.0-or-later
--->
-
-<Application xmlns="https://github.com/avaloniaui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             x:Class="SharpEmu.GUI.App"
-             RequestedThemeVariant="Dark">
-
-  <Application.Resources>
-    <Color x:Key="SystemAccentColor">#7C5CFC</Color>
-
-    <LinearGradientBrush x:Key="BgBrush" StartPoint="0%,0%" EndPoint="100%,100%">
-      <GradientStop Offset="0" Color="#12151F" />
-      <GradientStop Offset="0.55" Color="#0D1017" />
-      <GradientStop Offset="1" Color="#0B0D14" />
-    </LinearGradientBrush>
-
-    <SolidColorBrush x:Key="ChromeBrush" Color="#090C12" />
-    <SolidColorBrush x:Key="CardBrush" Color="#141924" />
-    <SolidColorBrush x:Key="CardBorderBrush" Color="#232B3A" />
-    <SolidColorBrush x:Key="ElevatedBrush" Color="#1B2230" />
-    <SolidColorBrush x:Key="TextBrush" Color="#E8ECF4" />
-    <SolidColorBrush x:Key="MutedBrush" Color="#8B94A7" />
-    <SolidColorBrush x:Key="FaintBrush" Color="#5A6478" />
-    <SolidColorBrush x:Key="AccentBrush" Color="#7C5CFC" />
-    <SolidColorBrush x:Key="AccentHoverBrush" Color="#8F73FF" />
-    <SolidColorBrush x:Key="DangerBrush" Color="#E5484D" />
-    <SolidColorBrush x:Key="DangerHoverBrush" Color="#F2555A" />
-    <SolidColorBrush x:Key="SuccessBrush" Color="#46C46B" />
-    <SolidColorBrush x:Key="TileHoverBrush" Color="#1A2130" />
-    <SolidColorBrush x:Key="TileSelectedBrush" Color="#212A3F" />
-  </Application.Resources>
-
-  <Application.Styles>
-    <FluentTheme />
-
-    <Style Selector="Window">
-      <Setter Property="FontFamily" Value="Inter, Segoe UI, sans-serif" />
-      <Setter Property="Foreground" Value="{StaticResource TextBrush}" />
-    </Style>
-
-    <Style Selector="Border.card">
-      <Setter Property="Background" Value="{StaticResource CardBrush}" />
-      <Setter Property="BorderBrush" Value="{StaticResource CardBorderBrush}" />
-      <Setter Property="BorderThickness" Value="1" />
-      <Setter Property="CornerRadius" Value="12" />
-      <Setter Property="Padding" Value="16" />
-    </Style>
-
-    <Style Selector="Border.pill">
-      <Setter Property="Background" Value="{StaticResource ElevatedBrush}" />
-      <Setter Property="CornerRadius" Value="999" />
-      <Setter Property="Padding" Value="10,3" />
-    </Style>
-
-    <Style Selector="TextBlock.sectionTitle">
-      <Setter Property="FontSize" Value="11" />
-      <Setter Property="FontWeight" Value="SemiBold" />
-      <Setter Property="LetterSpacing" Value="1.5" />
-      <Setter Property="Foreground" Value="{StaticResource MutedBrush}" />
-    </Style>
-
-    <Style Selector="TextBlock.fieldLabel">
-      <Setter Property="FontSize" Value="12" />
-      <Setter Property="Foreground" Value="{StaticResource MutedBrush}" />
-      <Setter Property="Margin" Value="0,0,0,6" />
-    </Style>
-
-    <Style Selector="TextBox">
-      <Setter Property="CornerRadius" Value="8" />
-    </Style>
-
-    <Style Selector="Button.accent">
-      <Setter Property="Background" Value="{StaticResource AccentBrush}" />
-      <Setter Property="Foreground" Value="White" />
-      <Setter Property="FontWeight" Value="SemiBold" />
-      <Setter Property="Padding" Value="22,10" />
-      <Setter Property="CornerRadius" Value="8" />
-    </Style>
-    <Style Selector="Button.accent:pointerover /template/ ContentPresenter#PART_ContentPresenter">
-      <Setter Property="Background" Value="{StaticResource AccentHoverBrush}" />
-      <Setter Property="Foreground" Value="White" />
-    </Style>
-
-    <Style Selector="Button.danger">
-      <Setter Property="Background" Value="{StaticResource DangerBrush}" />
-      <Setter Property="Foreground" Value="White" />
-      <Setter Property="FontWeight" Value="SemiBold" />
-      <Setter Property="Padding" Value="22,10" />
-      <Setter Property="CornerRadius" Value="8" />
-    </Style>
-    <Style Selector="Button.danger:pointerover /template/ ContentPresenter#PART_ContentPresenter">
-      <Setter Property="Background" Value="{StaticResource DangerHoverBrush}" />
-      <Setter Property="Foreground" Value="White" />
-    </Style>
-
-    <Style Selector="Button.ghost">
-      <Setter Property="Background" Value="Transparent" />
-      <Setter Property="BorderBrush" Value="{StaticResource CardBorderBrush}" />
-      <Setter Property="BorderThickness" Value="1" />
-      <Setter Property="Foreground" Value="{StaticResource TextBrush}" />
-      <Setter Property="Padding" Value="12,7" />
-      <Setter Property="CornerRadius" Value="8" />
-    </Style>
-    <Style Selector="Button.ghost:pointerover /template/ ContentPresenter#PART_ContentPresenter">
-      <Setter Property="Background" Value="{StaticResource ElevatedBrush}" />
-      <Setter Property="Foreground" Value="{StaticResource TextBrush}" />
-    </Style>
-
-    <Style Selector="ToggleButton.ghost">
-      <Setter Property="Background" Value="Transparent" />
-      <Setter Property="BorderBrush" Value="{StaticResource CardBorderBrush}" />
-      <Setter Property="BorderThickness" Value="1" />
-      <Setter Property="Foreground" Value="{StaticResource TextBrush}" />
-      <Setter Property="Padding" Value="12,7" />
-      <Setter Property="CornerRadius" Value="8" />
-    </Style>
-    <Style Selector="ToggleButton.ghost:pointerover /template/ ContentPresenter#PART_ContentPresenter">
-      <Setter Property="Background" Value="{StaticResource ElevatedBrush}" />
-      <Setter Property="Foreground" Value="{StaticResource TextBrush}" />
-    </Style>
-    <Style Selector="ToggleButton.ghost:checked /template/ ContentPresenter#PART_ContentPresenter">
-      <Setter Property="Background" Value="{StaticResource ElevatedBrush}" />
-      <Setter Property="BorderBrush" Value="{StaticResource AccentBrush}" />
-      <Setter Property="Foreground" Value="{StaticResource TextBrush}" />
-    </Style>
-
-    <Style Selector="ContextMenu">
-      <Setter Property="Background" Value="{StaticResource CardBrush}" />
-      <Setter Property="BorderBrush" Value="{StaticResource CardBorderBrush}" />
-      <Setter Property="BorderThickness" Value="1" />
-      <Setter Property="CornerRadius" Value="10" />
-      <Setter Property="Padding" Value="6" />
-    </Style>
-    <Style Selector="ContextMenu MenuItem">
-      <Setter Property="Padding" Value="10,7" />
-      <Setter Property="CornerRadius" Value="7" />
-    </Style>
-    <Style Selector="ContextMenu Separator">
-      <Setter Property="Background" Value="{StaticResource CardBorderBrush}" />
-      <Setter Property="Height" Value="1" />
-      <Setter Property="Margin" Value="8,4" />
-    </Style>
-
-    <Style Selector="ListBox.console">
-      <Setter Property="Background" Value="#0B0E14" />
-      <Setter Property="FontFamily" Value="Cascadia Mono, Consolas, Courier New, monospace" />
-      <Setter Property="FontSize" Value="12" />
-    </Style>
-    <Style Selector="ListBox.console ListBoxItem">
-      <Setter Property="Padding" Value="10,1" />
-      <Setter Property="MinHeight" Value="0" />
-    </Style>
-
-    <!-- Cover-art library grid -->
-    <Style Selector="ListBox.tileGrid ListBoxItem">
-      <Setter Property="Padding" Value="10" />
-      <Setter Property="Margin" Value="5" />
-      <Setter Property="CornerRadius" Value="14" />
-      <Setter Property="Background" Value="Transparent" />
-      <Setter Property="BorderThickness" Value="1" />
-      <Setter Property="BorderBrush" Value="Transparent" />
-      <Setter Property="RenderTransform" Value="translateY(0px)" />
-      <Setter Property="Transitions">
-        <Transitions>
-          <TransformOperationsTransition Property="RenderTransform" Duration="0:0:0.12" />
-        </Transitions>
-      </Setter>
-    </Style>
-    <Style Selector="ListBox.tileGrid ListBoxItem:pointerover">
-      <Setter Property="RenderTransform" Value="translateY(-3px)" />
-    </Style>
-    <Style Selector="ListBox.tileGrid ListBoxItem:pointerover /template/ ContentPresenter#PART_ContentPresenter">
-      <Setter Property="Background" Value="{StaticResource TileHoverBrush}" />
-    </Style>
-    <Style Selector="ListBox.tileGrid ListBoxItem:selected /template/ ContentPresenter#PART_ContentPresenter">
-      <Setter Property="Background" Value="{StaticResource TileSelectedBrush}" />
-      <Setter Property="BorderBrush" Value="{StaticResource AccentBrush}" />
-    </Style>
-    <Style Selector="ListBox.tileGrid ListBoxItem:selected:pointerover /template/ ContentPresenter#PART_ContentPresenter">
-      <Setter Property="Background" Value="{StaticResource TileSelectedBrush}" />
-      <Setter Property="BorderBrush" Value="{StaticResource AccentHoverBrush}" />
-    </Style>
-
-    <Style Selector="Border.coverShadow">
-      <Setter Property="CornerRadius" Value="10" />
-      <Setter Property="BoxShadow" Value="0 6 14 0 #55000000" />
-    </Style>
-    <Style Selector="Border.coverClip">
-      <Setter Property="CornerRadius" Value="10" />
-      <Setter Property="ClipToBounds" Value="True" />
-      <Setter Property="Background" Value="{StaticResource ElevatedBrush}" />
-    </Style>
-  </Application.Styles>
-
-</Application>

src/SharpEmu.GUI/App.axaml.cs

@@ -1,26 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using Avalonia;
-using Avalonia.Controls.ApplicationLifetimes;
-using Avalonia.Markup.Xaml;
-
-namespace SharpEmu.GUI;
-
-public partial class App : Application
-{
-    public override void Initialize()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
-
-    public override void OnFrameworkInitializationCompleted()
-    {
-        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
-        {
-            desktop.MainWindow = new MainWindow();
-        }
-
-        base.OnFrameworkInitializationCompleted();
-    }
-}

src/SharpEmu.GUI/Atrac9/Atrac9Config.cs

@@ -1,120 +0,0 @@
-#nullable disable
-using System.IO;
-using LibAtrac9.Utilities;
-
-namespace LibAtrac9
-{
-    /// <summary>
-    /// Stores the configuration data needed to decode or encode an ATRAC9 stream.
-    /// </summary>
-    public class Atrac9Config
-    {
-        /// <summary>
-        /// The 4-byte ATRAC9 configuration data.
-        /// </summary>
-        public byte[] ConfigData { get; }
-
-        /// <summary>
-        /// A 4-bit value specifying one of 16 sample rates.
-        /// </summary>
-        public int SampleRateIndex { get; }
-        /// <summary>
-        /// A 3-bit value specifying one of 6 substream channel mappings.
-        /// </summary>
-        public int ChannelConfigIndex { get; }
-        /// <summary>
-        /// An 11-bit value containing the average size of a single frame.
-        /// </summary>
-        public int FrameBytes { get; }
-        /// <summary>
-        /// A 2-bit value indicating how many frames are in each superframe.
-        /// </summary>
-        public int SuperframeIndex { get; }
-
-        /// <summary>
-        /// The channel mapping used by the ATRAC9 stream.
-        /// </summary>
-        public ChannelConfig ChannelConfig { get; }
-        /// <summary>
-        /// The total number of channels in the ATRAC9 stream.
-        /// </summary>
-        public int ChannelCount { get; }
-        /// <summary>
-        /// The sample rate of the ATRAC9 stream.
-        /// </summary>
-        public int SampleRate { get; }
-        /// <summary>
-        /// Indicates whether the ATRAC9 stream has a <see cref="SampleRateIndex"/> of 8 or above.
-        /// </summary>
-        public bool HighSampleRate { get; }
-
-        /// <summary>
-        /// The number of frames in each superframe.
-        /// </summary>
-        public int FramesPerSuperframe { get; }
-        /// <summary>
-        /// The number of samples in one frame as an exponent of 2.
-        /// <see cref="FrameSamples"/> = 2^<see cref="FrameSamplesPower"/>.
-        /// </summary>
-        public int FrameSamplesPower { get; }
-        /// <summary>
-        /// The number of samples in one frame.
-        /// </summary>
-        public int FrameSamples { get; }
-        /// <summary>
-        /// The number of bytes in one superframe.
-        /// </summary>
-        public int SuperframeBytes { get; }
-        /// <summary>
-        /// The number of samples in one superframe.
-        /// </summary>
-        public int SuperframeSamples { get; }
-
-        /// <summary>
-        /// Reads ATRAC9 configuration data and calculates the stream parameters from it.
-        /// </summary>
-        /// <param name="configData">The processed ATRAC9 configuration.</param>
-        public Atrac9Config(byte[] configData)
-        {
-            if (configData == null || configData.Length != 4)
-            {
-                throw new InvalidDataException("Config data must be 4 bytes long");
-            }
-
-            ReadConfigData(configData, out int a, out int b, out int c, out int d);
-            SampleRateIndex = a;
-            ChannelConfigIndex = b;
-            FrameBytes = c;
-            SuperframeIndex = d;
-            ConfigData = configData;
-
-            FramesPerSuperframe = 1 << SuperframeIndex;
-            SuperframeBytes = FrameBytes << SuperframeIndex;
-            ChannelConfig = Tables.ChannelConfig[ChannelConfigIndex];
-
-            ChannelCount = ChannelConfig.ChannelCount;
-            SampleRate = Tables.SampleRates[SampleRateIndex];
-            HighSampleRate = SampleRateIndex > 7;
-            FrameSamplesPower = Tables.SamplingRateIndexToFrameSamplesPower[SampleRateIndex];
-            FrameSamples = 1 << FrameSamplesPower;
-            SuperframeSamples = FrameSamples * FramesPerSuperframe;
-        }
-
-        private static void ReadConfigData(byte[] configData, out int sampleRateIndex, out int channelConfigIndex, out int frameBytes, out int superframeIndex)
-        {
-            var reader = new BitReader(configData);
-
-            int header = reader.ReadInt(8);
-            sampleRateIndex = reader.ReadInt(4);
-            channelConfigIndex = reader.ReadInt(3);
-            int validationBit = reader.ReadInt(1);
-            frameBytes = reader.ReadInt(11) + 1;
-            superframeIndex = reader.ReadInt(2);
-
-            if (header != 0xFE || validationBit != 0)
-            {
-                throw new InvalidDataException("ATRAC9 Config Data is invalid");
-            }
-        }
-    }
-}

src/SharpEmu.GUI/Atrac9/Atrac9Decoder.cs

@@ -1,128 +0,0 @@
-#nullable disable
-using System;
-using LibAtrac9.Utilities;
-
-namespace LibAtrac9
-{
-    /// <summary>
-    /// Decodes an ATRAC9 stream into 16-bit PCM.
-    /// </summary>
-    public class Atrac9Decoder
-    {
-        /// <summary>
-        /// The config data for the current ATRAC9 stream.
-        /// </summary>
-        public Atrac9Config Config { get; private set; }
-
-        private Frame Frame { get; set; }
-        private BitReader Reader { get; set; }
-        private bool _initialized;
-
-        /// <summary>
-        /// Sets up the decoder to decode an ATRAC9 stream based on the information in <paramref name="configData"/>.
-        /// </summary>
-        /// <param name="configData">A 4-byte value containing information about the ATRAC9 stream.</param>
-        public void Initialize(byte[] configData)
-        {
-            Config = new Atrac9Config(configData);
-            Frame = new Frame(Config);
-            Reader = new BitReader(null);
-            _initialized = true;
-        }
-
-        /// <summary>
-        /// Decodes one superframe of ATRAC9 data.
-        /// </summary>
-        /// <param name="atrac9Data">The ATRAC9 data to decode. The array must be at least
-        /// <see cref="Config"/>.<see cref="Atrac9Config.SuperframeBytes"/> bytes long.</param>
-        /// <param name="pcmOut">A buffer that the decoded PCM data will be placed in.
-        /// The array must have dimensions of at least [<see cref="Config"/>.<see cref="Atrac9Config.ChannelCount"/>]
-        /// [<see cref="Config"/>.<see cref="Atrac9Config.SuperframeSamples"/>].</param>
-        public void Decode(byte[] atrac9Data, short[][] pcmOut)
-        {
-            if (!_initialized) throw new InvalidOperationException("Decoder must be initialized before decoding.");
-
-            ValidateDecodeBuffers(atrac9Data, pcmOut);
-            Reader.SetBuffer(atrac9Data);
-            DecodeSuperFrame(pcmOut);
-        }
-
-        private void ValidateDecodeBuffers(byte[] atrac9Buffer, short[][] pcmBuffer)
-        {
-            if (atrac9Buffer == null) throw new ArgumentNullException(nameof(atrac9Buffer));
-            if (pcmBuffer == null) throw new ArgumentNullException(nameof(pcmBuffer));
-
-            if (atrac9Buffer.Length < Config.SuperframeBytes)
-            {
-                throw new ArgumentException("ATRAC9 buffer is too small");
-            }
-
-            if (pcmBuffer.Length < Config.ChannelCount)
-            {
-                throw new ArgumentException("PCM buffer is too small");
-            }
-
-            for (int i = 0; i < Config.ChannelCount; i++)
-            {
-                if (pcmBuffer[i]?.Length < Config.SuperframeSamples)
-                {
-                    throw new ArgumentException("PCM buffer is too small");
-                }
-            }
-        }
-
-        private void DecodeSuperFrame(short[][] pcmOut)
-        {
-            for (int i = 0; i < Config.FramesPerSuperframe; i++)
-            {
-                Frame.FrameIndex = i;
-                DecodeFrame(Reader, Frame);
-                PcmFloatToShort(pcmOut, i * Config.FrameSamples);
-                Reader.AlignPosition(8);
-            }
-        }
-
-        private void PcmFloatToShort(short[][] pcmOut, int start)
-        {
-            int endSample = start + Config.FrameSamples;
-            int channelNum = 0;
-            foreach (Block block in Frame.Blocks)
-            {
-                foreach (Channel channel in block.Channels)
-                {
-                    double[] pcmSrc = channel.Pcm;
-                    short[] pcmDest = pcmOut[channelNum++];
-                    for (int d = 0, s = start; s < endSample; d++, s++)
-                    {
-                        double sample = pcmSrc[d];
-                        // Not using Math.Round because it's ~20x slower on 64-bit
-                        int roundedSample = (int)Math.Floor(sample + 0.5);
-                        pcmDest[s] = Helpers.Clamp16(roundedSample);
-                    }
-                }
-            }
-        }
-
-        private static void DecodeFrame(BitReader reader, Frame frame)
-        {
-            Unpack.UnpackFrame(reader, frame);
-
-            foreach (Block block in frame.Blocks)
-            {
-                Quantization.DequantizeSpectra(block);
-                Stereo.ApplyIntensityStereo(block);
-                Quantization.ScaleSpectrum(block);
-                BandExtension.ApplyBandExtension(block);
-                ImdctBlock(block);
-            }
-        }
-
-        private static void ImdctBlock(Block block)
-        {
-            foreach (Channel channel in block.Channels)
-            {
-                channel.Mdct.RunImdct(channel.Spectra, channel.Pcm);
-            }
-        }
-    }
-}

src/SharpEmu.GUI/Atrac9/Atrac9Rng.cs

@@ -1,34 +0,0 @@
-#nullable disable
-namespace LibAtrac9
-{
-    /// <summary>
-    /// An Xorshift RNG used by the ATRAC9 codec
-    /// </summary>
-    internal class Atrac9Rng
-    {
-        private ushort _stateA;
-        private ushort _stateB;
-        private ushort _stateC;
-        private ushort _stateD;
-
-        public Atrac9Rng(ushort seed)
-        {
-            int startValue = 0x4D93 * (seed ^ (seed >> 14));
-
-            _stateA = (ushort)(3 - startValue);
-            _stateB = (ushort)(2 - startValue);
-            _stateC = (ushort)(1 - startValue);
-            _stateD = (ushort)(0 - startValue);
-        }
-
-        public ushort Next()
-        {
-            ushort t = (ushort)(_stateD ^ (_stateD << 5));
-            _stateD = _stateC;
-            _stateC = _stateB;
-            _stateB = _stateA;
-            _stateA = (ushort)(t ^ _stateA ^ ((t ^ (_stateA >> 5)) >> 4));
-            return _stateA;
-        }
-    }
-}

src/SharpEmu.GUI/Atrac9/BandExtension.cs

@@ -1,373 +0,0 @@
-#nullable disable
-using System;
-
-namespace LibAtrac9
-{
-    internal static class BandExtension
-    {
-        public static void ApplyBandExtension(Block block)
-        {
-            if (!block.BandExtensionEnabled || !block.HasExtensionData) return;
-
-            foreach (Channel channel in block.Channels)
-            {
-                ApplyBandExtensionChannel(channel);
-            }
-        }
-
-        private static void ApplyBandExtensionChannel(Channel channel)
-        {
-            int groupAUnit = channel.Block.QuantizationUnitCount;
-            int[] scaleFactors = channel.ScaleFactors;
-            double[] spectra = channel.Spectra;
-            double[] scales = channel.BexScales;
-            int[] values = channel.BexValues;
-
-            GetBexBandInfo(out int bandCount, out int groupBUnit, out int groupCUnit, groupAUnit);
-            int totalUnits = Math.Max(groupCUnit, 22);
-
-            int groupABin = Tables.QuantUnitToCoeffIndex[groupAUnit];
-            int groupBBin = Tables.QuantUnitToCoeffIndex[groupBUnit];
-            int groupCBin = Tables.QuantUnitToCoeffIndex[groupCUnit];
-            int totalBins = Tables.QuantUnitToCoeffIndex[totalUnits];
-
-            FillHighFrequencies(spectra, groupABin, groupBBin, groupCBin, totalBins);
-
-            switch (channel.BexMode)
-            {
-                case 0:
-                    int bexQuantUnits = totalUnits - groupAUnit;
-
-                    switch (bandCount)
-                    {
-                        case 3:
-                            scales[0] = BexMode0Bands3[0][values[0]];
-                            scales[1] = BexMode0Bands3[1][values[0]];
-                            scales[2] = BexMode0Bands3[2][values[1]];
-                            scales[3] = BexMode0Bands3[3][values[2]];
-                            scales[4] = BexMode0Bands3[4][values[3]];
-                            break;
-                        case 4:
-                            scales[0] = BexMode0Bands4[0][values[0]];
-                            scales[1] = BexMode0Bands4[1][values[0]];
-                            scales[2] = BexMode0Bands4[2][values[1]];
-                            scales[3] = BexMode0Bands4[3][values[2]];
-                            scales[4] = BexMode0Bands4[4][values[3]];
-                            break;
-                        case 5:
-                            scales[0] = BexMode0Bands5[0][values[0]];
-                            scales[1] = BexMode0Bands5[1][values[1]];
-                            scales[2] = BexMode0Bands5[2][values[1]];
-                            break;
-                    }
-
-                    scales[bexQuantUnits - 1] = Tables.SpectrumScale[scaleFactors[groupAUnit]];
-
-                    AddNoiseToSpectrum(channel, Tables.QuantUnitToCoeffIndex[totalUnits - 1],
-                        Tables.QuantUnitToCoeffCount[totalUnits - 1]);
-                    ScaleBexQuantUnits(spectra, scales, groupAUnit, totalUnits);
-                    break;
-                case 1:
-                    for (int i = groupAUnit; i < totalUnits; i++)
-                    {
-                        scales[i - groupAUnit] = Tables.SpectrumScale[scaleFactors[i]];
-                    }
-
-                    AddNoiseToSpectrum(channel, groupABin, totalBins - groupABin);
-                    ScaleBexQuantUnits(spectra, scales, groupAUnit, totalUnits);
-                    break;
-                case 2:
-                    double groupAScale2 = BexMode2Scale[values[0]];
-                    double groupBScale2 = BexMode2Scale[values[1]];
-
-                    for (int i = groupABin; i < groupBBin; i++)
-                    {
-                        spectra[i] *= groupAScale2;
-                    }
-
-                    for (int i = groupBBin; i < groupCBin; i++)
-                    {
-                        spectra[i] *= groupBScale2;
-                    }
-                    return;
-                case 3:
-                    double rate = Math.Pow(2, BexMode3Rate[values[1]]);
-                    double scale = BexMode3Initial[values[0]];
-                    for (int i = groupABin; i < totalBins; i++)
-                    {
-                        scale *= rate;
-                        spectra[i] *= scale;
-                    }
-                    return;
-                case 4:
-                    double mult = BexMode4Multiplier[values[0]];
-                    double groupAScale4 = 0.7079468 * mult;
-                    double groupBScale4 = 0.5011902 * mult;
-                    double groupCScale4 = 0.3548279 * mult;
-
-                    for (int i = groupABin; i < groupBBin; i++)
-                    {
-                        spectra[i] *= groupAScale4;
-                    }
-
-                    for (int i = groupBBin; i < groupCBin; i++)
-                    {
-                        spectra[i] *= groupBScale4;
-                    }
-
-                    for (int i = groupCBin; i < totalBins; i++)
-                    {
-                        spectra[i] *= groupCScale4;
-                    }
-                    return;
-            }
-        }
-
-        private static void ScaleBexQuantUnits(double[] spectra, double[] scales, int startUnit, int totalUnits)
-        {
-            for (int i = startUnit; i < totalUnits; i++)
-            {
-                for (int k = Tables.QuantUnitToCoeffIndex[i]; k < Tables.QuantUnitToCoeffIndex[i + 1]; k++)
-                {
-                    spectra[k] *= scales[i - startUnit];
-                }
-            }
-        }
-
-        private static void FillHighFrequencies(double[] spectra, int groupABin, int groupBBin, int groupCBin, int totalBins)
-        {
-            for (int i = 0; i < groupBBin - groupABin; i++)
-            {
-                spectra[groupABin + i] = spectra[groupABin - i - 1];
-            }
-
-            for (int i = 0; i < groupCBin - groupBBin; i++)
-            {
-                spectra[groupBBin + i] = spectra[groupBBin - i - 1];
-            }
-
-            for (int i = 0; i < totalBins - groupCBin; i++)
-            {
-                spectra[groupCBin + i] = spectra[groupCBin - i - 1];
-            }
-        }
-
-        private static void AddNoiseToSpectrum(Channel channel, int index, int count)
-        {
-            if (channel.Rng == null)
-            {
-                int[] sf = channel.ScaleFactors;
-                ushort seed = (ushort)(543 * (sf[8] + sf[12] + sf[15] + 1));
-                channel.Rng = new Atrac9Rng(seed);
-            }
-            for (int i = 0; i < count; i++)
-            {
-                channel.Spectra[i + index] = channel.Rng.Next() / 65535.0 * 2.0 - 1.0;
-            }
-        }
-
-        public static void GetBexBandInfo(out int bandCount, out int groupAUnit, out int groupBUnit, int quantUnits)
-        {
-            groupAUnit = BexGroupInfo[quantUnits - 13][0];
-            groupBUnit = BexGroupInfo[quantUnits - 13][1];
-            bandCount = BexGroupInfo[quantUnits - 13][2];
-        }
-
-        public static readonly byte[][] BexGroupInfo =
-        {
-            new byte[] {16, 21, 0},
-            new byte[] {18, 22, 1},
-            new byte[] {20, 22, 2},
-            new byte[] {21, 22, 3},
-            new byte[] {21, 22, 3},
-            new byte[] {23, 24, 4},
-            new byte[] {23, 24, 4},
-            new byte[] {24, 24, 5}
-        };
-
-        // [mode][bands]
-
-        public static readonly byte[][] BexEncodedValueCounts =
-        {
-            new byte[] {0, 0, 0, 4, 4, 2},
-            new byte[] {0, 0, 0, 0, 0, 0},
-            new byte[] {0, 0, 0, 2, 2, 1},
-            new byte[] {0, 0, 0, 2, 2, 2},
-            new byte[] {1, 1, 1, 0, 0, 0}
-        };
-
-        // [mode][bands][valueIndex]
-
-        public static readonly byte[][][] BexDataLengths =
-        {
-            new[] {
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {5, 4, 3, 3},
-                new byte[] {4, 4, 3, 4},
-                new byte[] {4, 5, 0, 0}
-            }, new[] {
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0}
-            }, new[] {
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {6, 6, 0, 0},
-                new byte[] {6, 6, 0, 0},
-                new byte[] {6, 0, 0, 0}
-            }, new[] {
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {4, 4, 0, 0},
-                new byte[] {4, 4, 0, 0},
-                new byte[] {4, 4, 0, 0}
-            }, new[] {
-                new byte[] {3, 0, 0, 0},
-                new byte[] {3, 0, 0, 0},
-                new byte[] {3, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0},
-                new byte[] {0, 0, 0, 0}
-            }
-        };
-
-        public static readonly double[][] BexMode0Bands3 =
-        {
-            new[] {
-                0.000000e+0, 1.988220e-1, 2.514343e-1, 2.960510e-1,
-                3.263550e-1, 3.771362e-1, 3.786926e-1, 4.540405e-1,
-                4.877625e-1, 5.262451e-1, 5.447083e-1, 5.737000e-1,
-                6.212158e-1, 6.222839e-1, 6.560974e-1, 6.896667e-1,
-                7.555542e-1, 7.677917e-1, 7.918091e-1, 7.971497e-1,
-                8.188171e-1, 8.446045e-1, 9.790649e-1, 9.822083e-1,
-                9.846191e-1, 9.859314e-1, 9.863586e-1, 9.863892e-1,
-                9.873352e-1, 9.881287e-1, 9.898682e-1, 9.913330e-1
-            }, new[] {
-                0.000000e+0, 9.982910e-1, 7.592773e-2, 7.179565e-1,
-                9.851379e-1, 5.340271e-1, 9.013672e-1, 6.349182e-1,
-                7.226257e-1, 1.948547e-1, 7.628174e-1, 9.873657e-1,
-                8.112183e-1, 2.715454e-1, 9.734192e-1, 1.443787e-1,
-                4.640198e-1, 3.249207e-1, 3.790894e-1, 8.276367e-2,
-                5.954590e-1, 2.864380e-1, 9.806824e-1, 7.929077e-1,
-                6.292114e-1, 4.887085e-1, 2.905273e-1, 1.301880e-1,
-                3.140869e-1, 5.482483e-1, 4.210815e-1, 1.182861e-1
-            }, new[] {
-                0.000000e+0, 3.155518e-2, 8.581543e-2, 1.364746e-1,
-                1.858826e-1, 2.368469e-1, 2.888184e-1, 3.432617e-1,
-                4.012451e-1, 4.623108e-1, 5.271301e-1, 5.954895e-1,
-                6.681213e-1, 7.448425e-1, 8.245239e-1, 9.097290e-1
-            }, new[] {
-                0.000000e+0, 4.418945e-2, 1.303711e-1, 2.273560e-1,
-                3.395996e-1, 4.735718e-1, 6.267090e-1, 8.003845e-1
-            }, new[] {
-                0.000000e+0, 2.804565e-2, 9.683228e-2, 1.849976e-1,
-                3.005981e-1, 4.470520e-1, 6.168518e-1, 8.007813e-1
-            }
-        };
-
-        public static readonly double[][] BexMode0Bands4 =
-        {
-            new[] {
-                0.000000e+0, 2.708740e-1, 3.479614e-1, 3.578186e-1,
-                5.083618e-1, 5.299072e-1, 5.819092e-1, 6.381836e-1,
-                7.276917e-1, 7.595520e-1, 7.878723e-1, 9.707336e-1,
-                9.713135e-1, 9.736023e-1, 9.759827e-1, 9.832458e-1
-            }, new[] {
-                0.000000e+0, 2.330627e-1, 5.891418e-1, 7.170410e-1,
-                2.036438e-1, 1.613464e-1, 6.668701e-1, 9.481201e-1,
-                9.769897e-1, 5.111694e-1, 3.522644e-1, 8.209534e-1,
-                2.933960e-1, 9.757690e-1, 5.289917e-1, 4.372253e-1
-            }, new[] {
-                0.000000e+0, 4.360962e-2, 1.056519e-1, 1.590576e-1,
-                2.078857e-1, 2.572937e-1, 3.082581e-1, 3.616028e-1,
-                4.191589e-1, 4.792175e-1, 5.438538e-1, 6.125183e-1,
-                6.841125e-1, 7.589417e-1, 8.365173e-1, 9.148254e-1
-            }, new[] {
-                0.000000e+0, 4.074097e-2, 1.164551e-1, 2.077026e-1,
-                3.184509e-1, 4.532166e-1, 6.124268e-1, 7.932129e-1
-            }, new[] {
-                0.000000e+0, 8.880615e-3, 2.932739e-2, 5.593872e-2,
-                8.825684e-2, 1.259155e-1, 1.721497e-1, 2.270813e-1,
-                2.901611e-1, 3.579712e-1, 4.334106e-1, 5.147095e-1,
-                6.023254e-1, 6.956177e-1, 7.952881e-1, 8.977356e-1
-            }
-        };
-
-        public static readonly double[][] BexMode0Bands5 =
-        {
-            new[] {
-                0.000000e+0, 7.379150e-2, 1.806335e-1, 2.687073e-1,
-                3.407898e-1, 4.047546e-1, 4.621887e-1, 5.168762e-1,
-                5.703125e-1, 6.237488e-1, 6.763611e-1, 7.288208e-1,
-                7.808533e-1, 8.337708e-1, 8.874512e-1, 9.418030e-1
-            }, new[] {
-                0.000000e+0, 7.980347e-2, 1.615295e-1, 1.665649e-1,
-                1.822205e-1, 2.185669e-1, 2.292175e-1, 2.456665e-1,
-                2.666321e-1, 3.306580e-1, 3.330688e-1, 3.765259e-1,
-                4.085083e-1, 4.400024e-1, 4.407654e-1, 4.817505e-1,
-                4.924011e-1, 5.320740e-1, 5.893860e-1, 6.131287e-1,
-                6.212463e-1, 6.278076e-1, 6.308899e-1, 7.660828e-1,
-                7.850647e-1, 7.910461e-1, 7.929382e-1, 8.038330e-1,
-                9.834900e-1, 9.846191e-1, 9.852295e-1, 9.862671e-1
-            }, new[] {
-                0.000000e+0, 6.084290e-1, 3.672791e-1, 3.151855e-1,
-                1.488953e-1, 2.571716e-1, 5.103455e-1, 3.311157e-1,
-                5.426025e-2, 4.254456e-1, 7.998352e-1, 7.873230e-1,
-                5.418701e-1, 2.925110e-1, 8.468628e-2, 1.410522e-1,
-                9.819641e-1, 9.609070e-1, 3.530884e-2, 9.729004e-2,
-                5.758362e-1, 9.941711e-1, 7.215576e-1, 7.183228e-1,
-                2.028809e-1, 9.588623e-2, 2.032166e-1, 1.338806e-1,
-                5.003357e-1, 1.874390e-1, 9.804993e-1, 1.107788e-1
-            }
-        };
-
-        public static readonly double[] BexMode2Scale =
-        {
-            4.272461e-4, 1.312256e-3, 2.441406e-3, 3.692627e-3,
-            4.913330e-3, 6.134033e-3, 7.507324e-3, 8.972168e-3,
-            1.049805e-2, 1.223755e-2, 1.406860e-2, 1.599121e-2,
-            1.800537e-2, 2.026367e-2, 2.264404e-2, 2.517700e-2,
-            2.792358e-2, 3.073120e-2, 3.344727e-2, 3.631592e-2,
-            3.952026e-2, 4.275513e-2, 4.608154e-2, 4.968262e-2,
-            5.355835e-2, 5.783081e-2, 6.195068e-2, 6.677246e-2,
-            7.196045e-2, 7.745361e-2, 8.319092e-2, 8.993530e-2,
-            9.759521e-2, 1.056213e-1, 1.138916e-1, 1.236267e-1,
-            1.348267e-1, 1.470337e-1, 1.603394e-1, 1.755676e-1,
-            1.905823e-1, 2.071228e-1, 2.245178e-1, 2.444153e-1,
-            2.658997e-1, 2.897644e-1, 3.146057e-1, 3.450012e-1,
-            3.766174e-1, 4.122620e-1, 4.505615e-1, 4.893799e-1,
-            5.305481e-1, 5.731201e-1, 6.157837e-1, 6.580811e-1,
-            6.985168e-1, 7.435303e-1, 7.865906e-1, 8.302612e-1,
-            8.718567e-1, 9.125671e-1, 9.575806e-1, 9.996643e-1
-        };
-
-        public static readonly double[] BexMode3Initial =
-        {
-            3.491211e-1, 5.371094e-1, 6.782227e-1, 7.910156e-1,
-            9.057617e-1, 1.024902e+0, 1.156250e+0, 1.290527e+0,
-            1.458984e+0, 1.664551e+0, 1.929688e+0, 2.278320e+0,
-            2.831543e+0, 3.659180e+0, 5.257813e+0, 8.373047e+0
-        };
-
-        public static readonly double[] BexMode3Rate =
-        {
-            -2.913818e-1, -2.541504e-1, -1.664429e-1, -1.476440e-1,
-            -1.342163e-1, -1.220703e-1, -1.117554e-1, -1.026611e-1,
-            -9.436035e-2, -8.483887e-2, -7.476807e-2, -6.304932e-2,
-            -4.492188e-2, -2.447510e-2, +1.831055e-4, +4.174805e-2
-        };
-
-        public static readonly double[] BexMode4Multiplier =
-        {
-            3.610229e-2, 1.260681e-1, 2.227478e-1, 3.338318e-1,
-            4.662170e-1, 6.221313e-1, 7.989197e-1, 9.939575e-1
-        };
-    }
-}

src/SharpEmu.GUI/Atrac9/BitAllocation.cs

@@ -1,141 +0,0 @@
-#nullable disable
-using System;
-
-namespace LibAtrac9
-{
-    internal static class BitAllocation
-    {
-        public static void CreateGradient(Block block)
-        {
-            int valueCount = block.GradientEndValue - block.GradientStartValue;
-            int unitCount = block.GradientEndUnit - block.GradientStartUnit;
-
-            for (int i = 0; i < block.GradientEndUnit; i++)
-            {
-                block.Gradient[i] = block.GradientStartValue;
-            }
-
-            for (int i = block.GradientEndUnit; i <= block.QuantizationUnitCount; i++)
-            {
-                block.Gradient[i] = block.GradientEndValue;
-            }
-            if (unitCount <= 0) return;
-            if (valueCount == 0) return;
-
-            byte[] curve = Tables.GradientCurves[unitCount - 1];
-            if (valueCount <= 0)
-            {
-                double scale = (-valueCount - 1) / 31.0;
-                int baseVal = block.GradientStartValue - 1;
-                for (int i = block.GradientStartUnit; i < block.GradientEndUnit; i++)
-                {
-                    block.Gradient[i] = baseVal - (int)(curve[i - block.GradientStartUnit] * scale);
-                }
-            }
-            else
-            {
-                double scale = (valueCount - 1) / 31.0;
-                int baseVal = block.GradientStartValue + 1;
-                for (int i = block.GradientStartUnit; i < block.GradientEndUnit; i++)
-                {
-                    block.Gradient[i] = baseVal + (int)(curve[i - block.GradientStartUnit] * scale);
-                }
-            }
-        }
-
-        public static void CalculateMask(Channel channel)
-        {
-            Array.Clear(channel.PrecisionMask, 0, channel.PrecisionMask.Length);
-            for (int i = 1; i < channel.Block.QuantizationUnitCount; i++)
-            {
-                int delta = channel.ScaleFactors[i] - channel.ScaleFactors[i - 1];
-                if (delta > 1)
-                {
-                    channel.PrecisionMask[i] += Math.Min(delta - 1, 5);
-                }
-                else if (delta < -1)
-                {
-                    channel.PrecisionMask[i - 1] += Math.Min(delta * -1 - 1, 5);
-                }
-            }
-        }
-
-        public static void CalculatePrecisions(Channel channel)
-        {
-            Block block = channel.Block;
-
-            if (block.GradientMode != 0)
-            {
-                for (int i = 0; i < block.QuantizationUnitCount; i++)
-                {
-                    channel.Precisions[i] = channel.ScaleFactors[i] + channel.PrecisionMask[i] - block.Gradient[i];
-                    if (channel.Precisions[i] > 0)
-                    {
-                        switch (block.GradientMode)
-                        {
-                            case 1:
-                                channel.Precisions[i] /= 2;
-                                break;
-                            case 2:
-                                channel.Precisions[i] = 3 * channel.Precisions[i] / 8;
-                                break;
-                            case 3:
-                                channel.Precisions[i] /= 4;
-                                break;
-                        }
-                    }
-                }
-            }
-            else
-            {
-                for (int i = 0; i < block.QuantizationUnitCount; i++)
-                {
-                    channel.Precisions[i] = channel.ScaleFactors[i] - block.Gradient[i];
-                }
-            }
-
-            for (int i = 0; i < block.QuantizationUnitCount; i++)
-            {
-                if (channel.Precisions[i] < 1)
-                {
-                    channel.Precisions[i] = 1;
-                }
-            }
-
-            for (int i = 0; i < block.GradientBoundary; i++)
-            {
-                channel.Precisions[i]++;
-            }
-
-            for (int i = 0; i < block.QuantizationUnitCount; i++)
-            {
-                channel.PrecisionsFine[i] = 0;
-                if (channel.Precisions[i] > 15)
-                {
-                    channel.PrecisionsFine[i] = channel.Precisions[i] - 15;
-                    channel.Precisions[i] = 15;
-                }
-            }
-        }
-
-        public static byte[][] GenerateGradientCurves()
-        {
-            byte[] main =
-            {
-                01, 01, 01, 01, 02, 02, 02, 02, 03, 03, 03, 04, 04, 05, 05, 06, 07, 08, 09, 10, 11, 12, 13, 15,
-                16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 26, 27, 27, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30, 30
-            };
-            var curves = new byte[main.Length][];
-
-            for (int length = 1; length <= main.Length; length++)
-            {
-                curves[length - 1] = new byte[length];
-                for (int i = 0; i < length; i++)
-                {
-                    curves[length - 1][i] = main[i * main.Length / length];
-                }
-            }
-            return curves;
-        }
-    }
-}

src/SharpEmu.GUI/Atrac9/Block.cs

@@ -1,92 +0,0 @@
-#nullable disable
-namespace LibAtrac9
-{
-    internal class Block
-    {
-        public Atrac9Config Config { get; }
-        public BlockType BlockType { get; }
-        public int BlockIndex { get; }
-        public Frame Frame { get; }
-
-        public Channel[] Channels { get; }
-        public int ChannelCount { get; }
-
-        public bool FirstInSuperframe { get; set; }
-        public bool ReuseBandParams { get; set; }
-
-        public int BandCount { get; set; }
-        public int StereoBand { get; set; }
-        public int ExtensionBand { get; set; }
-        public int QuantizationUnitCount { get; set; }
-        public int StereoQuantizationUnit { get; set; }
-        public int ExtensionUnit { get; set; }
-        public int QuantizationUnitsPrev { get; set; }
-
-        public int[] Gradient { get; } = new int[31];
-        public int GradientMode { get; set; }
-        public int GradientStartUnit { get; set; }
-        public int GradientStartValue { get; set; }
-        public int GradientEndUnit { get; set; }
-        public int GradientEndValue { get; set; }
-        public int GradientBoundary { get; set; }
-
-        public int PrimaryChannelIndex { get; set; }
-        public int[] JointStereoSigns { get; } = new int[30];
-        public bool HasJointStereoSigns { get; set; }
-        public Channel PrimaryChannel => Channels[PrimaryChannelIndex == 0 ? 0 : 1];
-        public Channel SecondaryChannel => Channels[PrimaryChannelIndex == 0 ? 1 : 0];
-
-        public bool BandExtensionEnabled { get; set; }
-        public bool HasExtensionData { get; set; }
-        public int BexDataLength { get; set; }
-        public int BexMode { get; set; }
-
-        public Block(Frame parentFrame, int blockIndex)
-        {
-            Frame = parentFrame;
-            BlockIndex = blockIndex;
-            Config = parentFrame.Config;
-            BlockType = Config.ChannelConfig.BlockTypes[blockIndex];
-            ChannelCount = BlockTypeToChannelCount(BlockType);
-            Channels = new Channel[ChannelCount];
-            for (int i = 0; i < ChannelCount; i++)
-            {
-                Channels[i] = new Channel(this, i);
-            }
-        }
-
-        public static int BlockTypeToChannelCount(BlockType blockType)
-        {
-            switch (blockType)
-            {
-                case BlockType.Mono:
-                    return 1;
-                case BlockType.Stereo:
-                    return 2;
-                case BlockType.LFE:
-                    return 1;
-                default:
-                    return 0;
-            }
-        }
-    }
-
-    /// <summary>
-    /// An ATRAC9 block (substream) type
-    /// </summary>
-    public enum BlockType
-    {
-        /// <summary>
-        /// Mono ATRAC9 block
-        /// </summary>
-        Mono = 0,
-        /// <summary>
-        /// Stereo ATRAC9 block
-        /// </summary>
-        Stereo = 1,
-        /// <summary>
-        /// Low-frequency effects ATRAC9 block
-        /// </summary>
-        LFE = 2
-    }
-}

src/SharpEmu.GUI/Atrac9/Channel.cs

@@ -1,49 +0,0 @@
-#nullable disable
-using LibAtrac9.Utilities;
-
-namespace LibAtrac9
-{
-    internal class Channel
-    {
-        public Atrac9Config Config { get; }
-        public int ChannelIndex { get; }
-        public bool IsPrimary => Block.PrimaryChannelIndex == ChannelIndex;
-        public Block Block { get; }
-        public Mdct Mdct { get; }
-
-        public double[] Pcm { get; } = new double[256];
-        public double[] Spectra { get; } = new double[256];
-
-        public int CodedQuantUnits { get; set; }
-        public int ScaleFactorCodingMode { get; set; }
-        public int[] ScaleFactors { get; } = new int[31];
-        public int[] ScaleFactorsPrev { get; } = new int[31];
-
-        public int[] Precisions { get; } = new int[30];
-        public int[] PrecisionsFine { get; } = new int[30];
-        public int[] PrecisionMask { get; } = new int[30];
-
-        public int[] SpectraValuesBuffer { get; } = new int[16];
-        public int[] CodebookSet { get; } = new int[30];
-
-        public int[] QuantizedSpectra { get; } = new int[256];
-        public int[] QuantizedSpectraFine { get; } = new int[256];
-
-        public int BexMode { get; set; }
-        public int BexValueCount { get; set; }
-        public int[] BexValues { get; } = new int[4];
-        public double[] BexScales { get; } = new double[6];
-        public Atrac9Rng Rng { get; set; }
-
-        public Channel(Block parentBlock, int channelIndex)
-        {
-            Block = parentBlock;
-            ChannelIndex = channelIndex;
-            Config = parentBlock.Config;
-            Mdct = new Mdct(Config.FrameSamplesPower, Tables.ImdctWindow[Config.FrameSamplesPower - 6]);
-        }
-
-        public void UpdateCodedUnits() =>
-            CodedQuantUnits = IsPrimary ? Block.QuantizationUnitCount : Block.StereoQuantizationUnit;
-    }
-}

src/SharpEmu.GUI/Atrac9/ChannelConfig.cs

@@ -1,34 +0,0 @@
-#nullable disable
-namespace LibAtrac9
-{
-    /// <summary>
-    /// Describes the channel mapping for an ATRAC9 stream
-    /// </summary>
-    public class ChannelConfig
-    {
-        internal ChannelConfig(params BlockType[] blockTypes)
-        {
-            BlockCount = blockTypes.Length;
-            BlockTypes = blockTypes;
-            foreach (BlockType type in blockTypes)
-            {
-                ChannelCount += Block.BlockTypeToChannelCount(type);
-            }
-        }
-
-        /// <summary>
-        /// The number of blocks or substreams in the ATRAC9 stream
-        /// </summary>
-        public int BlockCount { get; }
-
-        /// <summary>
-        /// The type of each block or substream in the ATRAC9 stream
-        /// </summary>
-        public BlockType[] BlockTypes { get; }
-
-        /// <summary>
-        /// The number of channels in the ATRAC9 stream
-        /// </summary>
-        public int ChannelCount { get; }
-    }
-}

src/SharpEmu.GUI/Atrac9/Frame.cs

@@ -1,21 +0,0 @@
-#nullable disable
-namespace LibAtrac9
-{
-    internal class Frame
-    {
-        public Atrac9Config Config { get; }
-        public int FrameIndex { get; set; }
-        public Block[] Blocks { get; }
-
-        public Frame(Atrac9Config config)
-        {
-            Config = config;
-            Blocks = new Block[config.ChannelConfig.BlockCount];
-
-            for (int i = 0; i < config.ChannelConfig.BlockCount; i++)
-            {
-                Blocks[i] = new Block(this, i);
-            }
-        }
-    }
-}

src/SharpEmu.GUI/Atrac9/HuffmanCodebook.cs

@@ -1,63 +0,0 @@
-#nullable disable
-using System;
-using LibAtrac9.Utilities;
-
-namespace LibAtrac9
-{
-    internal class HuffmanCodebook
-    {
-        public HuffmanCodebook(short[] codes, byte[] bits, byte valueCountPower)
-        {
-            Codes = codes;
-            Bits = bits;
-            if (Codes == null || Bits == null) return;
-
-            ValueCount = 1 << valueCountPower;
-            ValueCountPower = valueCountPower;
-            ValueBits = Helpers.Log2(codes.Length) >> valueCountPower;
-            ValueMax = 1 << ValueBits;
-
-            int max = 0;
-            foreach (byte bitSize in bits)
-            {
-                max = Math.Max(max, bitSize);
-            }
-
-            MaxBitSize = max;
-            Lookup = CreateLookupTable();
-        }
-
-        private byte[] CreateLookupTable()
-        {
-            if (Codes == null || Bits == null) return null;
-
-            int tableSize = 1 << MaxBitSize;
-            var dest = new byte[tableSize];
-
-            for (int i = 0; i < Bits.Length; i++)
-            {
-                if (Bits[i] == 0) continue;
-                int unusedBits = MaxBitSize - Bits[i];
-
-                int start = Codes[i] << unusedBits;
-                int length = 1 << unusedBits;
-                int end = start + length;
-
-                for (int j = start; j < end; j++)
-                {
-                    dest[j] = (byte)i;
-                }
-            }
-            return dest;
-        }
-
-        public short[] Codes { get; }
-        public byte[] Bits { get; }
-        public byte[] Lookup { get; }
-        public int ValueCount { get; }
-        public int ValueCountPower { get; }
-        public int ValueBits { get; }
-        public int ValueMax { get; }
-        public int MaxBitSize { get; }
-    }
-}

src/SharpEmu.GUI/Atrac9/LICENSE.txt

@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2018 Alex Barney
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.

src/SharpEmu.GUI/Atrac9/Quantization.cs

@@ -1,58 +0,0 @@
-#nullable disable
-using System;
-
-namespace LibAtrac9
-{
-    internal static class Quantization
-    {
-        public static void DequantizeSpectra(Block block)
-        {
-            foreach (Channel channel in block.Channels)
-            {
-                Array.Clear(channel.Spectra, 0, channel.Spectra.Length);
-
-                for (int i = 0; i < channel.CodedQuantUnits; i++)
-                {
-                    DequantizeQuantUnit(channel, i);
-                }
-            }
-        }
-
-        private static void DequantizeQuantUnit(Channel channel, int band)
-        {
-            int subBandIndex = Tables.QuantUnitToCoeffIndex[band];
-            int subBandCount = Tables.QuantUnitToCoeffCount[band];
-            double stepSize = Tables.QuantizerStepSize[channel.Precisions[band]];
-            double stepSizeFine = Tables.QuantizerFineStepSize[channel.PrecisionsFine[band]];
-
-            for (int sb = 0; sb < subBandCount; sb++)
-            {
-                double coarse = channel.QuantizedSpectra[subBandIndex + sb] * stepSize;
-                double fine = channel.QuantizedSpectraFine[subBandIndex + sb] * stepSizeFine;
-                channel.Spectra[subBandIndex + sb] = coarse + fine;
-            }
-        }
-
-        public static void ScaleSpectrum(Block block)
-        {
-            foreach (Channel channel in block.Channels)
-            {
-                ScaleSpectrum(channel);
-            }
-        }
-
-        private static void ScaleSpectrum(Channel channel)
-        {
-            int quantUnitCount = channel.Block.QuantizationUnitCount;
-            double[] spectra = channel.Spectra;
-
-            for (int i = 0; i < quantUnitCount; i++)
-            {
-                for (int sb = Tables.QuantUnitToCoeffIndex[i]; sb < Tables.QuantUnitToCoeffIndex[i + 1]; sb++)
-                {
-                    spectra[sb] *= Tables.SpectrumScale[channel.ScaleFactors[i]];
-                }
-            }
-        }
-    }
-}

src/SharpEmu.GUI/Atrac9/ScaleFactors.cs

@@ -1,172 +0,0 @@
-#nullable disable
-using System;
-using System.IO;
-using LibAtrac9.Utilities;
-
-namespace LibAtrac9
-{
-    internal static class ScaleFactors
-    {
-        public static void Read(BitReader reader, Channel channel)
-        {
-            Array.Clear(channel.ScaleFactors, 0, channel.ScaleFactors.Length);
-
-            channel.ScaleFactorCodingMode = reader.ReadInt(2);
-            if (channel.ChannelIndex == 0)
-            {
-                switch (channel.ScaleFactorCodingMode)
-                {
-                    case 0:
-                        ReadVlcDeltaOffset(reader, channel);
-                        break;
-                    case 1:
-                        ReadClcOffset(reader, channel);
-                        break;
-                    case 2:
-                        if (channel.Block.FirstInSuperframe) throw new InvalidDataException();
-                        ReadVlcDistanceToBaseline(reader, channel, channel.ScaleFactorsPrev, channel.Block.QuantizationUnitsPrev);
-                        break;
-                    case 3:
-                        if (channel.Block.FirstInSuperframe) throw new InvalidDataException();
-                        ReadVlcDeltaOffsetWithBaseline(reader, channel, channel.ScaleFactorsPrev, channel.Block.QuantizationUnitsPrev);
-                        break;
-                }
-            }
-            else
-            {
-                switch (channel.ScaleFactorCodingMode)
-                {
-                    case 0:
-                        ReadVlcDeltaOffset(reader, channel);
-                        break;
-                    case 1:
-                        ReadVlcDistanceToBaseline(reader, channel, channel.Block.Channels[0].ScaleFactors, channel.Block.ExtensionUnit);
-                        break;
-                    case 2:
-                        ReadVlcDeltaOffsetWithBaseline(reader, channel, channel.Block.Channels[0].ScaleFactors, channel.Block.ExtensionUnit);
-                        break;
-                    case 3:
-                        if (channel.Block.FirstInSuperframe) throw new InvalidDataException();
-                        ReadVlcDistanceToBaseline(reader, channel, channel.ScaleFactorsPrev, channel.Block.QuantizationUnitsPrev);
-                        break;
-                }
-            }
-
-            for (int i = 0; i < channel.Block.ExtensionUnit; i++)
-            {
-                if (channel.ScaleFactors[i] < 0 || channel.ScaleFactors[i] > 31)
-                {
-                    throw new InvalidDataException("Scale factor values are out of range.");
-                }
-            }
-
-            Array.Copy(channel.ScaleFactors, channel.ScaleFactorsPrev, channel.ScaleFactors.Length);
-        }
-
-        private static void ReadClcOffset(BitReader reader, Channel channel)
-        {
-            const int maxBits = 5;
-            int[] sf = channel.ScaleFactors;
-            int bitLength = reader.ReadInt(2) + 2;
-            int baseValue = bitLength < maxBits ? reader.ReadInt(maxBits) : 0;
-
-            for (int i = 0; i < channel.Block.ExtensionUnit; i++)
-            {
-                sf[i] = reader.ReadInt(bitLength) + baseValue;
-            }
-        }
-
-        private static void ReadVlcDeltaOffset(BitReader reader, Channel channel)
-        {
-            int weightIndex = reader.ReadInt(3);
-            byte[] weights = ScaleFactorWeights[weightIndex];
-
-            int[] sf = channel.ScaleFactors;
-            int baseValue = reader.ReadInt(5);
-            int bitLength = reader.ReadInt(2) + 3;
-            HuffmanCodebook codebook = Tables.HuffmanScaleFactorsUnsigned[bitLength];
-
-            sf[0] = reader.ReadInt(bitLength);
-
-            for (int i = 1; i < channel.Block.ExtensionUnit; i++)
-            {
-                int delta = Unpack.ReadHuffmanValue(codebook, reader);
-                sf[i] = (sf[i - 1] + delta) & (codebook.ValueMax - 1);
-            }
-
-            for (int i = 0; i < channel.Block.ExtensionUnit; i++)
-            {
-                sf[i] += baseValue - weights[i];
-            }
-        }
-
-        private static void ReadVlcDistanceToBaseline(BitReader reader, Channel channel, int[] baseline, int baselineLength)
-        {
-            int[] sf = channel.ScaleFactors;
-            int bitLength = reader.ReadInt(2) + 2;
-            HuffmanCodebook codebook = Tables.HuffmanScaleFactorsSigned[bitLength];
-            int unitCount = Math.Min(channel.Block.ExtensionUnit, baselineLength);
-
-            for (int i = 0; i < unitCount; i++)
-            {
-                int distance = Unpack.ReadHuffmanValue(codebook, reader, true);
-                sf[i] = (baseline[i] + distance) & 31;
-            }
-
-            for (int i = unitCount; i < channel.Block.ExtensionUnit; i++)
-            {
-                sf[i] = reader.ReadInt(5);
-            }
-        }
-
-        private static void ReadVlcDeltaOffsetWithBaseline(BitReader reader, Channel channel, int[] baseline, int baselineLength)
-        {
-            int[] sf = channel.ScaleFactors;
-            int baseValue = reader.ReadOffsetBinary(5, BitReader.OffsetBias.Negative);
-            int bitLength = reader.ReadInt(2) + 1;
-            HuffmanCodebook codebook = Tables.HuffmanScaleFactorsUnsigned[bitLength];
-            int unitCount = Math.Min(channel.Block.ExtensionUnit, baselineLength);
-
-            sf[0] = reader.ReadInt(bitLength);
-
-            for (int i = 1; i < unitCount; i++)
-            {
-                int delta = Unpack.ReadHuffmanValue(codebook, reader);
-                sf[i] = (sf[i - 1] + delta) & (codebook.ValueMax - 1);
-            }
-
-            for (int i = 0; i < unitCount; i++)
-            {
-                sf[i] += baseValue + baseline[i];
-            }
-
-            for (int i = unitCount; i < channel.Block.ExtensionUnit; i++)
-            {
-                sf[i] = reader.ReadInt(5);
-            }
-        }
-
-        public static readonly byte[][] ScaleFactorWeights =
-        {
-            new byte[] {
-                0, 0, 0, 1, 1, 2, 2, 2, 2, 2, 2, 3, 2, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 6, 6, 7, 7, 8, 10, 12, 12, 12
-            }, new byte[] {
-                3, 2, 2, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 2, 3, 3, 4, 5, 7, 10, 10, 10
-            }, new byte[] {
-                0, 2, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 8, 9, 12, 12, 12
-            }, new byte[] {
-                0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6, 7, 8, 8, 10, 11, 11, 12, 13, 13, 13, 13
-            }, new byte[] {
-                0, 2, 2, 3, 3, 4, 4, 5, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10, 11, 12, 12, 13, 13, 14, 14, 14
-            }, new byte[] {
-                1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 5, 6, 7, 7, 9, 11, 11, 11
-            }, new byte[] {
-                0, 5, 8, 10, 11, 11, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12,
-                12, 13, 15, 15, 15
-            }, new byte[] {
-                0, 2, 3, 4, 5, 6, 6, 7, 7, 8, 8, 8, 9, 9, 10, 10, 10, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13,
-                15, 15, 15
-            }
-        };
-    }
-}

src/SharpEmu.GUI/Atrac9/Stereo.cs

@@ -1,34 +0,0 @@
-#nullable disable
-namespace LibAtrac9
-{
-    internal static class Stereo
-    {
-        public static void ApplyIntensityStereo(Block block)
-        {
-            if (block.BlockType != BlockType.Stereo) return;
-
-            int totalUnits = block.QuantizationUnitCount;
-            int stereoUnits = block.StereoQuantizationUnit;
-            if (stereoUnits >= totalUnits) return;
-
-            Channel source = block.PrimaryChannel;
-            Channel dest = block.SecondaryChannel;
-
-            for (int i = stereoUnits; i < totalUnits; i++)
-            {
-                int sign = block.JointStereoSigns[i];
-                for (int sb = Tables.QuantUnitToCoeffIndex[i]; sb < Tables.QuantUnitToCoeffIndex[i + 1]; sb++)
-                {
-                    if (sign > 0)
-                    {
-                        dest.Spectra[sb] = -source.Spectra[sb];
-                    }
-                    else
-                    {
-                        dest.Spectra[sb] = source.Spectra[sb];
-                    }
-                }
-            }
-        }
-    }
-}

src/SharpEmu.GUI/Atrac9/Tables.cs

@@ -1,116 +0,0 @@
-#nullable disable
-using System;
-using static LibAtrac9.HuffmanCodebooks;
-
-namespace LibAtrac9
-{
-    internal static class Tables
-    {
-        public static int MaxHuffPrecision(bool highSampleRate) => highSampleRate ? 1 : 7;
-        public static int MinBandCount(bool highSampleRate) => highSampleRate ? 1 : 3;
-        public static int MaxExtensionBand(bool highSampleRate) => highSampleRate ? 16 : 18;
-
-        public static readonly int[] SampleRates =
-        {
-            11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000,
-            44100, 48000, 64000, 88200, 96000, 128000, 176400, 192000
-        };
-
-        public static readonly byte[] SamplingRateIndexToFrameSamplesPower = { 6, 6, 7, 7, 7, 8, 8, 8, 6, 6, 7, 7, 7, 8, 8, 8 };
-
-        // From sampling rate index
-        public static readonly byte[] MaxBandCount = { 8, 8, 12, 12, 12, 18, 18, 18, 8, 8, 12, 12, 12, 16, 16, 16 };
-        public static readonly byte[] BandToQuantUnitCount = { 0, 4, 8, 10, 12, 13, 14, 15, 16, 18, 20, 21, 22, 23, 24, 25, 26, 28, 30 };
-
-        public static readonly byte[] QuantUnitToCoeffCount =
-        {
-            02, 02, 02, 02, 02, 02, 02, 02, 04, 04, 04, 04, 08, 08, 08,
-            08, 08, 08, 08, 08, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16
-        };
-
-        public static readonly short[] QuantUnitToCoeffIndex =
-        {
-            0, 2, 4, 6, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
-            64, 72, 80, 88, 96, 112, 128, 144, 160, 176, 192, 208, 224, 240, 256
-        };
-
-        public static readonly byte[] QuantUnitToCodebookIndex =
-        {
-            0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2,
-            2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
-        };
-
-        public static readonly ChannelConfig[] ChannelConfig =
-        {
-            new ChannelConfig(BlockType.Mono),
-            new ChannelConfig(BlockType.Mono, BlockType.Mono),
-            new ChannelConfig(BlockType.Stereo),
-            new ChannelConfig(BlockType.Stereo, BlockType.Mono, BlockType.LFE, BlockType.Stereo),
-            new ChannelConfig(BlockType.Stereo, BlockType.Mono, BlockType.LFE, BlockType.Stereo, BlockType.Stereo),
-            new ChannelConfig(BlockType.Stereo, BlockType.Stereo)
-        };
-
-        public static readonly HuffmanCodebook[] HuffmanScaleFactorsUnsigned =
-            GenerateHuffmanCodebooks(HuffmanScaleFactorsACodes, HuffmanScaleFactorsABits, HuffmanScaleFactorsGroupSizes);
-        
-        public static readonly HuffmanCodebook[] HuffmanScaleFactorsSigned =
-            GenerateHuffmanCodebooks(HuffmanScaleFactorsBCodes, HuffmanScaleFactorsBBits, HuffmanScaleFactorsGroupSizes);
-
-        public static readonly HuffmanCodebook[][][] HuffmanSpectrum =
-        {
-            GenerateHuffmanCodebooks(HuffmanSpectrumACodes, HuffmanSpectrumABits, HuffmanSpectrumAGroupSizes),
-            GenerateHuffmanCodebooks(HuffmanSpectrumBCodes, HuffmanSpectrumBBits, HuffmanSpectrumBGroupSizes)
-        };
-
-        public static readonly double[][] ImdctWindow = { GenerateImdctWindow(6), GenerateImdctWindow(7), GenerateImdctWindow(8) };
-
-        public static readonly double[] SpectrumScale = Generate(32, SpectrumScaleFunction);
-        public static readonly double[] QuantizerStepSize = Generate(16, QuantizerStepSizeFunction);
-        public static readonly double[] QuantizerFineStepSize = Generate(16, QuantizerFineStepSizeFunction);
-
-        public static readonly byte[][] GradientCurves = BitAllocation.GenerateGradientCurves();
-
-        private static double QuantizerStepSizeFunction(int x) => 2.0 / ((1 << (x + 1)) - 1);
-        private static double QuantizerFineStepSizeFunction(int x) => QuantizerStepSizeFunction(x) / ushort.MaxValue;
-        private static double SpectrumScaleFunction(int x) => Math.Pow(2, x - 15);
-
-        private static double[] GenerateImdctWindow(int frameSizePower)
-        {
-            int frameSize = 1 << frameSizePower;
-            var output = new double[frameSize];
-
-            double[] a1 = GenerateMdctWindow(frameSizePower);
-
-            for (int i = 0; i < frameSize; i++)
-            {
-                output[i] = a1[i] / (a1[frameSize - 1 - i] * a1[frameSize - 1 - i] + a1[i] * a1[i]);
-            }
-            return output;
-        }
-
-        private static double[] GenerateMdctWindow(int frameSizePower)
-        {
-            int frameSize = 1 << frameSizePower;
-            var output = new double[frameSize];
-
-            for (int i = 0; i < frameSize; i++)
-            {
-                output[i] = (Math.Sin(((i + 0.5) / frameSize - 0.5) * Math.PI) + 1.0) * 0.5;
-            }
-
-            return output;
-        }
-
-        private static T[] Generate<T>(int count, Func<int, T> elementGenerator)
-        {
-            var table = new T[count];
-            for (int i = 0; i < count; i++)
-            {
-                table[i] = elementGenerator(i);
-            }
-            return table;
-        }
-
-        
-    }
-}

src/SharpEmu.GUI/Atrac9/Unpack.cs

@@ -1,426 +0,0 @@
-#nullable disable
-using System;
-using System.IO;
-using LibAtrac9.Utilities;
-
-namespace LibAtrac9
-{
-    internal static class Unpack
-    {
-        public static void UnpackFrame(BitReader reader, Frame frame)
-        {
-            foreach (Block block in frame.Blocks)
-            {
-                UnpackBlock(reader, block);
-            }
-        }
-
-        private static void UnpackBlock(BitReader reader, Block block)
-        {
-            ReadBlockHeader(reader, block);
-
-            if (block.BlockType == BlockType.LFE)
-            {
-                UnpackLfeBlock(reader, block);
-            }
-            else
-            {
-                UnpackStandardBlock(reader, block);
-            }
-
-            reader.AlignPosition(8);
-        }
-
-        private static void ReadBlockHeader(BitReader reader, Block block)
-        {
-            bool firstInSuperframe = block.Frame.FrameIndex == 0;
-            block.FirstInSuperframe = !reader.ReadBool();
-            block.ReuseBandParams = reader.ReadBool();
-
-            if (block.FirstInSuperframe != firstInSuperframe)
-            {
-                throw new InvalidDataException();
-            }
-
-            if (firstInSuperframe && block.ReuseBandParams && block.BlockType != BlockType.LFE)
-            {
-                throw new InvalidDataException();
-            }
-        }
-
-        private static void UnpackStandardBlock(BitReader reader, Block block)
-        {
-            Channel[] channels = block.Channels;
-
-            if (!block.ReuseBandParams)
-            {
-                ReadBandParams(reader, block);
-            }
-
-            ReadGradientParams(reader, block);
-            BitAllocation.CreateGradient(block);
-            ReadStereoParams(reader, block);
-            ReadExtensionParams(reader, block);
-
-            foreach (Channel channel in channels)
-            {
-                channel.UpdateCodedUnits();
-
-                ScaleFactors.Read(reader, channel);
-                BitAllocation.CalculateMask(channel);
-                BitAllocation.CalculatePrecisions(channel);
-                CalculateSpectrumCodebookIndex(channel);
-
-                ReadSpectra(reader, channel);
-                ReadSpectraFine(reader, channel);
-            }
-
-            block.QuantizationUnitsPrev = block.BandExtensionEnabled ? block.ExtensionUnit : block.QuantizationUnitCount;
-        }
-
-        private static void ReadBandParams(BitReader reader, Block block)
-        {
-            int minBandCount = Tables.MinBandCount(block.Config.HighSampleRate);
-            int maxExtensionBand = Tables.MaxExtensionBand(block.Config.HighSampleRate);
-            block.BandCount = reader.ReadInt(4);
-            block.BandCount += minBandCount;
-            block.QuantizationUnitCount = Tables.BandToQuantUnitCount[block.BandCount];
-            if (block.BandCount < minBandCount || block.BandCount >
-                Tables.MaxBandCount[block.Config.SampleRateIndex])
-            {
-                return;
-            }
-
-            if (block.BlockType == BlockType.Stereo)
-            {
-                block.StereoBand = reader.ReadInt(4);
-                block.StereoBand += minBandCount;
-                block.StereoQuantizationUnit = Tables.BandToQuantUnitCount[block.StereoBand];
-            }
-            else
-            {
-                block.StereoBand = block.BandCount;
-            }
-
-            block.BandExtensionEnabled = reader.ReadBool();
-            if (block.BandExtensionEnabled)
-            {
-                block.ExtensionBand = reader.ReadInt(4);
-                block.ExtensionBand += minBandCount;
-
-                if (block.ExtensionBand < block.BandCount || block.ExtensionBand > maxExtensionBand)
-                {
-                    throw new InvalidDataException();
-                }
-
-                block.ExtensionUnit = Tables.BandToQuantUnitCount[block.ExtensionBand];
-            }
-            else
-            {
-                block.ExtensionBand = block.BandCount;
-                block.ExtensionUnit = block.QuantizationUnitCount;
-            }
-        }
-
-        private static void ReadGradientParams(BitReader reader, Block block)
-        {
-            block.GradientMode = reader.ReadInt(2);
-            if (block.GradientMode > 0)
-            {
-                block.GradientEndUnit = 31;
-                block.GradientEndValue = 31;
-                block.GradientStartUnit = reader.ReadInt(5);
-                block.GradientStartValue = reader.ReadInt(5);
-            }
-            else
-            {
-                block.GradientStartUnit = reader.ReadInt(6);
-                block.GradientEndUnit = reader.ReadInt(6) + 1;
-                block.GradientStartValue = reader.ReadInt(5);
-                block.GradientEndValue = reader.ReadInt(5);
-            }
-            block.GradientBoundary = reader.ReadInt(4);
-
-            if (block.GradientBoundary > block.QuantizationUnitCount)
-            {
-                throw new InvalidDataException();
-            }
-            if (block.GradientStartUnit < 1 || block.GradientStartUnit >= 48)
-            {
-                throw new InvalidDataException();
-            }
-            if (block.GradientEndUnit < 1 || block.GradientEndUnit >= 48)
-            {
-                throw new InvalidDataException();
-            }
-            if (block.GradientStartUnit > block.GradientEndUnit)
-            {
-                throw new InvalidDataException();
-            }
-            if (block.GradientStartValue < 0 || block.GradientStartValue >= 32)
-            {
-                throw new InvalidDataException();
-            }
-            if (block.GradientEndValue < 0 || block.GradientEndValue >= 32)
-            {
-                throw new InvalidDataException();
-            }
-        }
-
-        private static void ReadStereoParams(BitReader reader, Block block)
-        {
-            if (block.BlockType != BlockType.Stereo) return;
-
-            block.PrimaryChannelIndex = reader.ReadInt(1);
-            block.HasJointStereoSigns = reader.ReadBool();
-            if (block.HasJointStereoSigns)
-            {
-                for (int i = block.StereoQuantizationUnit; i < block.QuantizationUnitCount; i++)
-                {
-                    block.JointStereoSigns[i] = reader.ReadInt(1);
-                }
-            }
-            else
-            {
-                Array.Clear(block.JointStereoSigns, 0, block.JointStereoSigns.Length);
-            }
-        }
-
-        private static void ReadExtensionParams(BitReader reader, Block block)
-        {
-            // ReSharper disable once RedundantAssignment
-            int bexBand = 0;
-            if (block.BandExtensionEnabled)
-            {
-                BandExtension.GetBexBandInfo(out bexBand, out _, out _, block.QuantizationUnitCount);
-                if (block.BlockType == BlockType.Stereo)
-                {
-                    ReadHeader(block.Channels[1]);
-                }
-                else
-                {
-                    reader.Position += 1;
-                }
-            }
-            block.HasExtensionData = reader.ReadBool();
-
-            if (!block.HasExtensionData) return;
-            if (!block.BandExtensionEnabled)
-            {
-                block.BexMode = reader.ReadInt(2);
-                block.BexDataLength = reader.ReadInt(5);
-                reader.Position += block.BexDataLength;
-                return;
-            }
-
-            ReadHeader(block.Channels[0]);
-
-            block.BexDataLength = reader.ReadInt(5);
-            if (block.BexDataLength <= 0) return;
-            int bexDataEnd = reader.Position + block.BexDataLength;
-
-            ReadData(block.Channels[0]);
-
-            if (block.BlockType == BlockType.Stereo)
-            {
-                ReadData(block.Channels[1]);
-            }
-
-            // Make sure we didn't read too many bits
-            if (reader.Position > bexDataEnd)
-            {
-                throw new InvalidDataException();
-            }
-
-            void ReadHeader(Channel channel)
-            {
-                int bexMode = reader.ReadInt(2);
-                channel.BexMode = bexBand > 2 ? bexMode : 4;
-                channel.BexValueCount = BandExtension.BexEncodedValueCounts[channel.BexMode][bexBand];
-            }
-
-            void ReadData(Channel channel)
-            {
-                for (int i = 0; i < channel.BexValueCount; i++)
-                {
-                    int dataLength = BandExtension.BexDataLengths[channel.BexMode][bexBand][i];
-                    channel.BexValues[i] = reader.ReadInt(dataLength);
-                }
-            }
-        }
-
-        private static void CalculateSpectrumCodebookIndex(Channel channel)
-        {
-            Array.Clear(channel.CodebookSet, 0, channel.CodebookSet.Length);
-            int quantUnits = channel.CodedQuantUnits;
-            int[] sf = channel.ScaleFactors;
-
-            if (quantUnits <= 1) return;
-            if (channel.Config.HighSampleRate) return;
-
-            // Temporarily setting this value allows for simpler code by
-            // making the last value a non-special case.
-            int originalScaleTmp = sf[quantUnits];
-            sf[quantUnits] = sf[quantUnits - 1];
-
-            int avg = 0;
-            if (quantUnits > 12)
-            {
-                for (int i = 0; i < 12; i++)
-                {
-                    avg += sf[i];
-                }
-                avg = (avg + 6) / 12;
-            }
-
-            for (int i = 8; i < quantUnits; i++)
-            {
-                int prevSf = sf[i - 1];
-                int nextSf = sf[i + 1];
-                int minSf = Math.Min(prevSf, nextSf);
-                if (sf[i] - minSf >= 3 || sf[i] - prevSf + sf[i] - nextSf >= 3)
-                {
-                    channel.CodebookSet[i] = 1;
-                }
-            }
-
-            for (int i = 12; i < quantUnits; i++)
-            {
-                if (channel.CodebookSet[i] == 0)
-                {
-                    int minSf = Math.Min(sf[i - 1], sf[i + 1]);
-                    if (sf[i] - minSf >= 2 && sf[i] >= avg - (Tables.QuantUnitToCoeffCount[i] == 16 ? 1 : 0))
-                    {
-                        channel.CodebookSet[i] = 1;
-                    }
-                }
-            }
-
-            sf[quantUnits] = originalScaleTmp;
-        }
-
-        private static void ReadSpectra(BitReader reader, Channel channel)
-        {
-            int[] values = channel.SpectraValuesBuffer;
-            Array.Clear(channel.QuantizedSpectra, 0, channel.QuantizedSpectra.Length);
-            int maxHuffPrecision = Tables.MaxHuffPrecision(channel.Config.HighSampleRate);
-
-            for (int i = 0; i < channel.CodedQuantUnits; i++)
-            {
-                int subbandCount = Tables.QuantUnitToCoeffCount[i];
-                int precision = channel.Precisions[i] + 1;
-                if (precision <= maxHuffPrecision)
-                {
-                    HuffmanCodebook huff = Tables.HuffmanSpectrum[channel.CodebookSet[i]][precision][Tables.QuantUnitToCodebookIndex[i]];
-                    int groupCount = subbandCount >> huff.ValueCountPower;
-                    for (int j = 0; j < groupCount; j++)
-                    {
-                        values[j] = ReadHuffmanValue(huff, reader);
-                    }
-
-                    DecodeHuffmanValues(channel.QuantizedSpectra, Tables.QuantUnitToCoeffIndex[i], subbandCount, huff, values);
-                }
-                else
-                {
-                    int subbandIndex = Tables.QuantUnitToCoeffIndex[i];
-                    for (int j = subbandIndex; j < Tables.QuantUnitToCoeffIndex[i + 1]; j++)
-                    {
-                        channel.QuantizedSpectra[j] = reader.ReadSignedInt(precision);
-                    }
-                }
-            }
-        }
-
-        private static void ReadSpectraFine(BitReader reader, Channel channel)
-        {
-            Array.Clear(channel.QuantizedSpectraFine, 0, channel.QuantizedSpectraFine.Length);
-
-            for (int i = 0; i < channel.CodedQuantUnits; i++)
-            {
-                if (channel.PrecisionsFine[i] > 0)
-                {
-                    int overflowBits = channel.PrecisionsFine[i] + 1;
-                    int startSubband = Tables.QuantUnitToCoeffIndex[i];
-                    int endSubband = Tables.QuantUnitToCoeffIndex[i + 1];
-
-                    for (int j = startSubband; j < endSubband; j++)
-                    {
-                        channel.QuantizedSpectraFine[j] = reader.ReadSignedInt(overflowBits);
-                    }
-                }
-            }
-        }
-
-        private static void DecodeHuffmanValues(int[] spectrum, int index, int bandCount, HuffmanCodebook huff, int[] values)
-        {
-            int valueCount = bandCount >> huff.ValueCountPower;
-            int mask = (1 << huff.ValueBits) - 1;
-
-            for (int i = 0; i < valueCount; i++)
-            {
-                int value = values[i];
-                for (int j = 0; j < huff.ValueCount; j++)
-                {
-                    spectrum[index++] = Bit.SignExtend32(value & mask, huff.ValueBits);
-                    value >>= huff.ValueBits;
-                }
-            }
-        }
-
-        public static int ReadHuffmanValue(HuffmanCodebook huff, BitReader reader, bool signed = false)
-        {
-            int code = reader.PeekInt(huff.MaxBitSize);
-            byte value = huff.Lookup[code];
-            int bits = huff.Bits[value];
-            reader.Position += bits;
-            return signed ? Bit.SignExtend32(value, huff.ValueBits) : value;
-        }
-
-        private static void UnpackLfeBlock(BitReader reader, Block block)
-        {
-            Channel channel = block.Channels[0];
-            block.QuantizationUnitCount = 2;
-
-            DecodeLfeScaleFactors(reader, channel);
-            CalculateLfePrecision(channel);
-            channel.CodedQuantUnits = block.QuantizationUnitCount;
-            ReadLfeSpectra(reader, channel);
-        }
-
-        private static void DecodeLfeScaleFactors(BitReader reader, Channel channel)
-        {
-            Array.Clear(channel.ScaleFactors, 0, channel.ScaleFactors.Length);
-            for (int i = 0; i < channel.Block.QuantizationUnitCount; i++)
-            {
-                channel.ScaleFactors[i] = reader.ReadInt(5);
-            }
-        }
-
-        private static void CalculateLfePrecision(Channel channel)
-        {
-            Block block = channel.Block;
-            int precision = block.ReuseBandParams ? 8 : 4;
-            for (int i = 0; i < block.QuantizationUnitCount; i++)
-            {
-                channel.Precisions[i] = precision;
-                channel.PrecisionsFine[i] = 0;
-            }
-        }
-
-        private static void ReadLfeSpectra(BitReader reader, Channel channel)
-        {
-            Array.Clear(channel.QuantizedSpectra, 0, channel.QuantizedSpectra.Length);
-
-            for (int i = 0; i < channel.CodedQuantUnits; i++)
-            {
-                if (channel.Precisions[i] <= 0) continue;
-
-                int precision = channel.Precisions[i] + 1;
-                for (int j = Tables.QuantUnitToCoeffIndex[i]; j < Tables.QuantUnitToCoeffIndex[i + 1]; j++)
-                {
-                    channel.QuantizedSpectra[j] = reader.ReadSignedInt(precision);
-                }
-            }
-        }
-    }
-}

src/SharpEmu.GUI/Atrac9/Utilities/Bit.cs

@@ -1,23 +0,0 @@
-#nullable disable
-namespace LibAtrac9.Utilities
-{
-    internal static class Bit
-    {
-        private static uint BitReverse32(uint value)
-        {
-            value = ((value & 0xaaaaaaaa) >> 1) | ((value & 0x55555555) << 1);
-            value = ((value & 0xcccccccc) >> 2) | ((value & 0x33333333) << 2);
-            value = ((value & 0xf0f0f0f0) >> 4) | ((value & 0x0f0f0f0f) << 4);
-            value = ((value & 0xff00ff00) >> 8) | ((value & 0x00ff00ff) << 8);
-            return (value >> 16) | (value << 16);
-        }
-        private static uint BitReverse32(uint value, int bitCount) => BitReverse32(value) >> (32 - bitCount);
-        public static int BitReverse32(int value, int bitCount) => (int) BitReverse32((uint) value, bitCount);
-
-        public static int SignExtend32(int value, int bits)
-        {
-            int shift = 8 * sizeof(int) - bits;
-            return (value << shift) >> shift;
-        }
-    }
-}

src/SharpEmu.GUI/Atrac9/Utilities/BitReader.cs

@@ -1,133 +0,0 @@
-#nullable disable
-using System;
-using System.Diagnostics;
-
-namespace LibAtrac9.Utilities
-{
-    internal class BitReader
-    {
-        private byte[] Buffer { get; set; }
-        private int LengthBits { get; set; }
-        public int Position { get; set; }
-        private int Remaining => LengthBits - Position;
-
-        public BitReader(byte[] buffer) => SetBuffer(buffer);
-
-        public void SetBuffer(byte[] buffer)
-        {
-            Buffer = buffer;
-            LengthBits = Buffer?.Length * 8 ?? 0;
-            Position = 0;
-        }
-
-        public int ReadInt(int bitCount)
-        {
-            int value = PeekInt(bitCount);
-            Position += bitCount;
-            return value;
-        }
-
-        public int ReadSignedInt(int bitCount)
-        {
-            int value = PeekInt(bitCount);
-            Position += bitCount;
-            return Bit.SignExtend32(value, bitCount);
-        }
-
-        public bool ReadBool() => ReadInt(1) == 1;
-
-        public int ReadOffsetBinary(int bitCount, OffsetBias bias)
-        {
-            int offset = (1 << (bitCount - 1)) - (int)bias;
-            int value = PeekInt(bitCount) - offset;
-            Position += bitCount;
-            return value;
-        }
-
-        public void AlignPosition(int multiple)
-        {
-            Position = Helpers.GetNextMultiple(Position, multiple);
-        }
-
-        public int PeekInt(int bitCount)
-        {
-            Debug.Assert(bitCount >= 0 && bitCount <= 32);
-
-            if (bitCount > Remaining)
-            {
-                if (Position >= LengthBits) return 0;
-
-                int extraBits = bitCount - Remaining;
-                return PeekIntFallback(Remaining) << extraBits;
-            }
-
-            int byteIndex = Position / 8;
-            int bitIndex = Position % 8;
-
-            if (bitCount <= 9 && Remaining >= 16)
-            {
-                int value = Buffer[byteIndex] << 8 | Buffer[byteIndex + 1];
-                value &= 0xFFFF >> bitIndex;
-                value >>= 16 - bitCount - bitIndex;
-                return value;
-            }
-
-            if (bitCount <= 17 && Remaining >= 24)
-            {
-                int value = Buffer[byteIndex] << 16 | Buffer[byteIndex + 1] << 8 | Buffer[byteIndex + 2];
-                value &= 0xFFFFFF >> bitIndex;
-                value >>= 24 - bitCount - bitIndex;
-                return value;
-            }
-
-            if (bitCount <= 25 && Remaining >= 32)
-            {
-                int value = Buffer[byteIndex] << 24 | Buffer[byteIndex + 1] << 16 | Buffer[byteIndex + 2] << 8 | Buffer[byteIndex + 3];
-                value &= (int)(0xFFFFFFFF >> bitIndex);
-                value >>= 32 - bitCount - bitIndex;
-                return value;
-            }
-            return PeekIntFallback(bitCount);
-        }
-
-        private int PeekIntFallback(int bitCount)
-        {
-            int value = 0;
-            int byteIndex = Position / 8;
-            int bitIndex = Position % 8;
-
-            while (bitCount > 0)
-            {
-                if (bitIndex >= 8)
-                {
-                    bitIndex = 0;
-                    byteIndex++;
-                }
-
-                int bitsToRead = Math.Min(bitCount, 8 - bitIndex);
-                int mask = 0xFF >> bitIndex;
-                int currentByte = (mask & Buffer[byteIndex]) >> (8 - bitIndex - bitsToRead);
-
-                value = (value << bitsToRead) | currentByte;
-                bitIndex += bitsToRead;
-                bitCount -= bitsToRead;
-            }
-            return value;
-        }
-
-        /// <summary>
-        /// Specifies the bias of an offset binary value. A positive bias can represent one more
-        /// positive value than negative value, and a negative bias can represent one more
-        /// negative value than positive value.
-        /// </summary>
-        /// <remarks>Example:
-        /// A 4-bit offset binary value with a positive bias can store
-        /// the values 8 through -7 inclusive.
-        /// A 4-bit offset binary value with a positive bias can store
-        /// the values 7 through -8 inclusive.</remarks>
-        public enum OffsetBias
-        {
-            Negative = 0
-        }
-    }
-}

src/SharpEmu.GUI/Atrac9/Utilities/Helpers.cs

@@ -1,51 +0,0 @@
-#nullable disable
-using System.Runtime.CompilerServices;
-
-namespace LibAtrac9.Utilities
-{
-    internal static class Helpers
-    {
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static short Clamp16(int value)
-        {
-            if (value > short.MaxValue)
-                return short.MaxValue;
-            if (value < short.MinValue)
-                return short.MinValue;
-            return (short)value;
-        }
-
-        public static int GetNextMultiple(int value, int multiple)
-        {
-            if (multiple <= 0)
-                return value;
-
-            if (value % multiple == 0)
-                return value;
-
-            return value + multiple - value % multiple;
-        }
-
-        /// <summary>
-        /// Returns the floor of the base 2 logarithm of a specified number.
-        /// </summary>
-        /// <param name="value">The number whose logarithm is to be found.</param>
-        /// <returns>The floor of the base 2 logarithm of <paramref name="value"/>.</returns>
-        public static int Log2(int value)
-        {
-            value |= value >> 1;
-            value |= value >> 2;
-            value |= value >> 4;
-            value |= value >> 8;
-            value |= value >> 16;
-
-            return MultiplyDeBruijnBitPosition[(uint)(value * 0x07C4ACDDU) >> 27];
-        }
-
-        private static readonly int[] MultiplyDeBruijnBitPosition =
-        {
-            0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30,
-            8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31
-        };
-    }
-}

src/SharpEmu.GUI/Atrac9/Utilities/Mdct.cs

@@ -1,178 +0,0 @@
-#nullable disable
-using System;
-using System.Collections.Generic;
-
-namespace LibAtrac9.Utilities
-{
-    internal class Mdct
-    {
-        private int MdctBits { get; }
-        private int MdctSize { get; }
-        private double Scale { get; }
-
-        private static readonly object TableLock = new object();
-        private static int _tableBits = -1;
-        private static readonly List<double[]> SinTables = new List<double[]>();
-        private static readonly List<double[]> CosTables = new List<double[]>();
-        private static readonly List<int[]> ShuffleTables = new List<int[]>();
-
-        private readonly double[] _imdctPrevious;
-        private readonly double[] _imdctWindow;
-
-        private readonly double[] _scratchMdct;
-        private readonly double[] _scratchDct;
-
-        public Mdct(int mdctBits, double[] window, double scale = 1)
-        {
-            SetTables(mdctBits);
-
-            MdctBits = mdctBits;
-            MdctSize = 1 << mdctBits;
-            Scale = scale;
-
-            if (window.Length < MdctSize)
-            {
-                throw new ArgumentException("Window must be as long as the MDCT size.", nameof(window));
-            }
-
-            _imdctPrevious = new double[MdctSize];
-            _scratchMdct = new double[MdctSize];
-            _scratchDct = new double[MdctSize];
-            _imdctWindow = window;
-        }
-
-        private static void SetTables(int maxBits)
-        {
-            lock (TableLock)
-            {
-                if (maxBits > _tableBits)
-                {
-                    for (int i = _tableBits + 1; i <= maxBits; i++)
-                    {
-                        GenerateTrigTables(i, out double[] sin, out double[] cos);
-                        SinTables.Add(sin);
-                        CosTables.Add(cos);
-                        ShuffleTables.Add(GenerateShuffleTable(i));
-                    }
-                    _tableBits = maxBits;
-                }
-            }
-        }
-
-        public void RunImdct(double[] input, double[] output)
-        {
-            if (input.Length < MdctSize)
-            {
-                throw new ArgumentException("Input must be as long as the MDCT size.", nameof(input));
-            }
-
-            if (output.Length < MdctSize)
-            {
-                throw new ArgumentException("Output must be as long as the MDCT size.", nameof(output));
-            }
-
-            int size = MdctSize;
-            int half = size / 2;
-            double[] dctOut = _scratchMdct;
-
-            Dct4(input, dctOut);
-
-            for (int i = 0; i < half; i++)
-            {
-                output[i] = _imdctWindow[i] * dctOut[i + half] + _imdctPrevious[i];
-                output[i + half] = _imdctWindow[i + half] * -dctOut[size - 1 - i] - _imdctPrevious[i + half];
-                _imdctPrevious[i] = _imdctWindow[size - 1 - i] * -dctOut[half - i - 1];
-                _imdctPrevious[i + half] = _imdctWindow[half - i - 1] * dctOut[i];
-            }
-        }
-
-        /// <summary>
-        /// Does a Type-4 DCT.
-        /// </summary>
-        /// <param name="input">The input array containing the time or frequency-domain samples</param>
-        /// <param name="output">The output array that will contain the transformed time or frequency-domain samples</param>
-        private void Dct4(double[] input, double[] output)
-        {
-            int[] shuffleTable = ShuffleTables[MdctBits];
-            double[] sinTable = SinTables[MdctBits];
-            double[] cosTable = CosTables[MdctBits];
-            double[] dctTemp = _scratchDct;
-
-            int size = MdctSize;
-            int lastIndex = size - 1;
-            int halfSize = size / 2;
-
-            for (int i = 0; i < halfSize; i++)
-            {
-                int i2 = i * 2;
-                double a = input[i2];
-                double b = input[lastIndex - i2];
-                double sin = sinTable[i];
-                double cos = cosTable[i];
-                dctTemp[i2] = a * cos + b * sin;
-                dctTemp[i2 + 1] = a * sin - b * cos;
-            }
-            int stageCount = MdctBits - 1;
-
-            for (int stage = 0; stage < stageCount; stage++)
-            {
-                int blockCount = 1 << stage;
-                int blockSizeBits = stageCount - stage;
-                int blockHalfSizeBits = blockSizeBits - 1;
-                int blockSize = 1 << blockSizeBits;
-                int blockHalfSize = 1 << blockHalfSizeBits;
-                sinTable = SinTables[blockHalfSizeBits];
-                cosTable = CosTables[blockHalfSizeBits];
-
-                for (int block = 0; block < blockCount; block++)
-                {
-                    for (int i = 0; i < blockHalfSize; i++)
-                    {
-                        int frontPos = (block * blockSize + i) * 2;
-                        int backPos = frontPos + blockSize;
-                        double a = dctTemp[frontPos] - dctTemp[backPos];
-                        double b = dctTemp[frontPos + 1] - dctTemp[backPos + 1];
-                        double sin = sinTable[i];
-                        double cos = cosTable[i];
-                        dctTemp[frontPos] += dctTemp[backPos];
-                        dctTemp[frontPos + 1] += dctTemp[backPos + 1];
-                        dctTemp[backPos] = a * cos + b * sin;
-                        dctTemp[backPos + 1] = a * sin - b * cos;
-                    }
-                }
-            }
-
-            for (int i = 0; i < MdctSize; i++)
-            {
-                output[i] = dctTemp[shuffleTable[i]] * Scale;
-            }
-        }
-
-        internal static void GenerateTrigTables(int sizeBits, out double[] sin, out double[] cos)
-        {
-            int size = 1 << sizeBits;
-            sin = new double[size];
-            cos = new double[size];
-
-            for (int i = 0; i < size; i++)
-            {
-                double value = Math.PI * (4 * i + 1) / (4 * size);
-                sin[i] = Math.Sin(value);
-                cos[i] = Math.Cos(value);
-            }
-        }
-
-        internal static int[] GenerateShuffleTable(int sizeBits)
-        {
-            int size = 1 << sizeBits;
-            var table = new int[size];
-
-            for (int i = 0; i < size; i++)
-            {
-                table[i] = Bit.BitReverse32(i ^ (i / 2), sizeBits);
-            }
-
-            return table;
-        }
-    }
-}

src/SharpEmu.GUI/ConsoleWindow.cs

@@ -1,150 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using Avalonia;
-using Avalonia.Collections;
-using Avalonia.Controls;
-using Avalonia.Controls.Templates;
-using Avalonia.Data;
-using Avalonia.Layout;
-using Avalonia.Media;
-using Avalonia.Platform;
-using Avalonia.Threading;
-using System.Collections.Specialized;
-
-namespace SharpEmu.GUI;
-
-public sealed class ConsoleWindow : Window
-{
-    private readonly AvaloniaList<LogLine> _sourceLines;
-    private readonly AvaloniaList<LogLine> _visibleLines = new();
-    private readonly ListBox _list;
-    private readonly TextBox _searchBox;
-    private readonly CheckBox _autoScrollCheck;
-
-    public ConsoleWindow(
-        AvaloniaList<LogLine> lines,
-        Action clear,
-        bool autoScroll)
-    {
-        _sourceLines = lines;
-        Title = "SharpEmu Console";
-        Width = 980;
-        Height = 620;
-        MinWidth = 520;
-        MinHeight = 320;
-        Background = new SolidColorBrush(Color.Parse("#0D1017"));
-        Icon = new WindowIcon(AssetLoader.Open(new Uri("avares://SharpEmu.GUI/Assets/SharpEmu.ico")));
-
-        _searchBox = new TextBox { Watermark = "Search...", Width = 320, Margin = new Thickness(0, 0, 12, 0) };
-        _autoScrollCheck = new CheckBox
-        {
-            Content = "Auto-scroll",
-            IsChecked = autoScroll,
-            FontSize = 12,
-            Margin = new Thickness(0, 0, 12, 0),
-            VerticalAlignment = VerticalAlignment.Center,
-        };
-        var copyButton = new Button
-        {
-            Classes = { "ghost" },
-            Content = "Copy",
-            Padding = new Thickness(10, 4),
-            Margin = new Thickness(0, 0, 8, 0),
-        };
-        var clearButton = new Button { Classes = { "ghost" }, Content = "Clear", Padding = new Thickness(10, 4) };
-        copyButton.Click += async (_, _) => await CopyAsync();
-        clearButton.Click += (_, _) => clear();
-        _searchBox.TextChanged += (_, _) => RefreshVisibleLines();
-
-        _list = new ListBox
-        {
-            Classes = { "console" },
-            ItemsSource = _visibleLines,
-            BorderThickness = new Thickness(1),
-            BorderBrush = new SolidColorBrush(Color.Parse("#232B3A")),
-            ItemTemplate = new FuncDataTemplate<LogLine>((_, _) =>
-            {
-                var text = new TextBlock { TextWrapping = TextWrapping.NoWrap };
-                text.Bind(TextBlock.TextProperty, new Binding(nameof(LogLine.Text)));
-                text.Bind(TextBlock.ForegroundProperty, new Binding(nameof(LogLine.Brush)));
-                return text;
-            }),
-        };
-
-        Content = new Grid
-        {
-            Margin = new Thickness(12),
-            RowDefinitions = new RowDefinitions("Auto,*"),
-            Children =
-            {
-                new Grid
-                {
-                    Margin = new Thickness(0, 0, 0, 8),
-                    ColumnDefinitions = new ColumnDefinitions("*,Auto,Auto,Auto,Auto"),
-                    Children =
-                    {
-                        new TextBlock
-                        {
-                            Classes = { "sectionTitle" },
-                            Text = "CONSOLE",
-                            VerticalAlignment = VerticalAlignment.Center,
-                        },
-                        _searchBox.WithGridColumn(1),
-                        _autoScrollCheck.WithGridColumn(2),
-                        copyButton.WithGridColumn(3),
-                        clearButton.WithGridColumn(4),
-                    },
-                },
-                _list.WithGridRow(1),
-            },
-        };
-
-        lines.CollectionChanged += OnLinesChanged;
-        Closed += (_, _) => lines.CollectionChanged -= OnLinesChanged;
-        RefreshVisibleLines();
-    }
-
-    private void OnLinesChanged(object? sender, NotifyCollectionChangedEventArgs e)
-    {
-        RefreshVisibleLines();
-        if (_autoScrollCheck.IsChecked == true)
-        {
-            Dispatcher.UIThread.Post(() => (_list.Scroll as ScrollViewer)?.ScrollToEnd());
-        }
-    }
-
-    private void RefreshVisibleLines()
-    {
-        var query = _searchBox.Text ?? string.Empty;
-        _visibleLines.Clear();
-        _visibleLines.AddRange(string.IsNullOrWhiteSpace(query)
-            ? _sourceLines
-            : _sourceLines.Where(line => line.Text.Contains(query, StringComparison.OrdinalIgnoreCase)));
-    }
-
-    private async Task CopyAsync()
-    {
-        if (_visibleLines.Count == 0 || Clipboard is null)
-        {
-            return;
-        }
-
-        await Clipboard.SetTextAsync(string.Join(Environment.NewLine, _visibleLines.Select(line => line.Text)));
-    }
-}
-
-file static class GridExtensions
-{
-    public static T WithGridColumn<T>(this T control, int column) where T : Control
-    {
-        Grid.SetColumn(control, column);
-        return control;
-    }
-
-    public static T WithGridRow<T>(this T control, int row) where T : Control
-    {
-        Grid.SetRow(control, row);
-        return control;
-    }
-}

src/SharpEmu.GUI/DiscordRichPresence.cs

@@ -1,252 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using System.IO.Pipes;
-using System.Text;
-using System.Text.Json;
-
-namespace SharpEmu.GUI;
-
-/// <summary>
-/// Minimal Discord Rich Presence client. Speaks Discord's local IPC
-/// protocol (framed JSON over the discord-ipc-N named pipe) directly, so no
-/// external dependency is needed. All failures are silent: no Discord, no
-/// presence, no impact on the launcher.
-/// </summary>
-public sealed class DiscordRichPresence : IDisposable
-{
-    private const int OpHandshake = 0;
-    private const int OpFrame = 1;
-    private const int MaxFrameBytes = 64 * 1024;
-
-    private static readonly JsonSerializerOptions JsonOptions = new()
-    {
-        DefaultIgnoreCondition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull,
-    };
-
-    private readonly object _gate = new();
-    private readonly string _clientId;
-    private readonly AutoResetEvent _signal = new(false);
-    private readonly Thread _worker;
-
-    private NamedPipeClientStream? _pipe;
-    private PresenceState? _desired;
-    private PresenceState? _sent;
-    private volatile bool _disposed;
-
-    private sealed record PresenceState(string Details, string? State, long? StartUnixSeconds);
-
-    public DiscordRichPresence(string clientId)
-    {
-        _clientId = clientId;
-        _worker = new Thread(WorkerLoop)
-        {
-            IsBackground = true,
-            Name = "DiscordRichPresence",
-        };
-        _worker.Start();
-    }
-
-    /// <summary>
-    /// Requests the given presence; the worker applies it asynchronously and
-    /// retries (with reconnection) until it is delivered or replaced.
-    /// </summary>
-    public void SetPresence(string details, string? state = null, long? startUnixSeconds = null)
-    {
-        lock (_gate)
-        {
-            _desired = new PresenceState(details, state, startUnixSeconds);
-        }
-
-        Trace($"queued details=\"{details}\" state=\"{state}\"");
-        _signal.Set();
-    }
-
-    public void Dispose()
-    {
-        _disposed = true;
-        _signal.Set();
-        ClosePipe();
-    }
-
-    private void WorkerLoop()
-    {
-        while (!_disposed)
-        {
-            // Woken immediately on presence changes; the periodic tick
-            // retries after connection failures (e.g. Discord starts later).
-            _signal.WaitOne(TimeSpan.FromSeconds(15));
-            if (_disposed || _clientId.Length == 0)
-            {
-                continue;
-            }
-
-            PresenceState? desired;
-            lock (_gate)
-            {
-                desired = _desired;
-            }
-
-            if (desired is null || desired == _sent)
-            {
-                continue;
-            }
-
-            try
-            {
-                EnsureConnected();
-                SendActivity(desired);
-                _sent = desired;
-                Trace($"sent details=\"{desired.Details}\" state=\"{desired.State}\"");
-            }
-            catch (Exception exception)
-            {
-                // Connection died (or never existed); reconnect on a later tick.
-                Trace($"send failed: {exception.Message}");
-                ClosePipe();
-                _sent = null;
-            }
-        }
-    }
-
-    private void EnsureConnected()
-    {
-        if (_pipe is { IsConnected: true })
-        {
-            return;
-        }
-
-        ClosePipe();
-        Exception? lastError = null;
-        for (var index = 0; index < 10; index++)
-        {
-            var pipe = new NamedPipeClientStream(
-                ".",
-                $"discord-ipc-{index}",
-                PipeDirection.InOut,
-                PipeOptions.Asynchronous);
-            try
-            {
-                pipe.Connect(500);
-                _pipe = pipe;
-                WriteFrame(OpHandshake, JsonSerializer.Serialize(new
-                {
-                    v = 1,
-                    client_id = _clientId,
-                }));
-
-                // Discord replies with a READY (or error) frame; consume it
-                // so the pipe buffer stays drained.
-                _ = ReadFrame();
-                return;
-            }
-            catch (Exception exception)
-            {
-                lastError = exception;
-                pipe.Dispose();
-                _pipe = null;
-            }
-        }
-
-        throw lastError ?? new IOException("Discord IPC pipe not found.");
-    }
-
-    private void SendActivity(PresenceState presence)
-    {
-        var payload = new Dictionary<string, object?>
-        {
-            ["cmd"] = "SET_ACTIVITY",
-            ["nonce"] = Guid.NewGuid().ToString(),
-            ["args"] = new Dictionary<string, object?>
-            {
-                ["pid"] = Environment.ProcessId,
-                ["activity"] = new Dictionary<string, object?>
-                {
-                    ["details"] = presence.Details,
-                    ["state"] = presence.State,
-                    ["timestamps"] = presence.StartUnixSeconds is { } start
-                        ? new Dictionary<string, object?> { ["start"] = start }
-                        : null,
-                    ["assets"] = new Dictionary<string, object?>
-                    {
-                        ["large_image"] = "logo",
-                        ["large_text"] = "SharpEmu",
-                    },
-                },
-            },
-        };
-
-        WriteFrame(OpFrame, JsonSerializer.Serialize(payload, JsonOptions));
-
-        // Consume Discord's acknowledgement to keep the pipe drained.
-        _ = ReadFrame();
-    }
-
-    private void WriteFrame(int opcode, string json)
-    {
-        var pipe = _pipe ?? throw new IOException("Discord IPC pipe is not connected.");
-        var payload = Encoding.UTF8.GetBytes(json);
-        var frame = new byte[8 + payload.Length];
-        BitConverter.TryWriteBytes(frame.AsSpan(0, 4), opcode);
-        BitConverter.TryWriteBytes(frame.AsSpan(4, 4), payload.Length);
-        payload.CopyTo(frame, 8);
-        pipe.Write(frame, 0, frame.Length);
-        pipe.Flush();
-    }
-
-    private string ReadFrame()
-    {
-        var pipe = _pipe ?? throw new IOException("Discord IPC pipe is not connected.");
-        var header = ReadExactly(pipe, 8);
-        var length = BitConverter.ToInt32(header, 4);
-        if (length is < 0 or > MaxFrameBytes)
-        {
-            throw new IOException($"Discord IPC frame length {length} is out of range.");
-        }
-
-        return Encoding.UTF8.GetString(ReadExactly(pipe, length));
-    }
-
-    private static byte[] ReadExactly(NamedPipeClientStream pipe, int count)
-    {
-        var buffer = new byte[count];
-        var read = 0;
-        while (read < count)
-        {
-            var chunk = pipe.Read(buffer, read, count - read);
-            if (chunk <= 0)
-            {
-                throw new IOException("Discord IPC pipe closed.");
-            }
-
-            read += chunk;
-        }
-
-        return buffer;
-    }
-
-    private static void Trace(string message)
-    {
-        if (string.Equals(
-                Environment.GetEnvironmentVariable("SHARPEMU_LOG_DISCORD"),
-                "1",
-                StringComparison.Ordinal))
-        {
-            Console.Error.WriteLine($"[DISCORD] {message}");
-        }
-    }
-
-    private void ClosePipe()
-    {
-        var pipe = _pipe;
-        _pipe = null;
-        try
-        {
-            pipe?.Dispose();
-        }
-        catch (Exception)
-        {
-            // Best effort; the pipe may already be broken.
-        }
-    }
-}

src/SharpEmu.GUI/EmulatorProcess.cs

@@ -1,657 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using System.ComponentModel;
-using System.Diagnostics;
-using System.Runtime.InteropServices;
-using System.Text;
-using Microsoft.Win32.SafeHandles;
-
-namespace SharpEmu.GUI;
-
-/// <summary>
-/// Launches the SharpEmu CLI as a child process with the same CET/CFG mitigation
-/// opt-outs the CLI would apply to its own relaunched child, while capturing
-/// stdout/stderr through pipes. The CLI's internal relaunch is suppressed via
-/// SHARPEMU_DISABLE_MITIGATION_RELAUNCH so output is not lost to a detached
-/// console. A kill-on-close job object ties the emulator's lifetime to the GUI.
-/// </summary>
-internal sealed class EmulatorProcess : IDisposable
-{
-    private const uint EXTENDED_STARTUPINFO_PRESENT = 0x00080000;
-    private const uint CREATE_NO_WINDOW = 0x08000000;
-    private const int STARTF_USESTDHANDLES = 0x00000100;
-    private const uint HANDLE_FLAG_INHERIT = 0x00000001;
-    private const uint INFINITE = 0xFFFFFFFF;
-    private const int PROC_THREAD_ATTRIBUTE_MITIGATION_POLICY = 0x00020007;
-    private const uint JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE = 0x00002000;
-    private const int JobObjectExtendedLimitInformation = 9;
-    private const ulong PROCESS_CREATION_MITIGATION_POLICY_CONTROL_FLOW_GUARD_ALWAYS_OFF = 0x00000002UL << 40;
-    private const ulong PROCESS_CREATION_MITIGATION_POLICY2_CET_USER_SHADOW_STACKS_ALWAYS_OFF = 0x00000002UL << 28;
-    private const ulong PROCESS_CREATION_MITIGATION_POLICY2_USER_CET_SET_CONTEXT_IP_VALIDATION_ALWAYS_OFF = 0x00000002UL << 32;
-    private const ulong PROCESS_CREATION_MITIGATION_POLICY2_XTENDED_CONTROL_FLOW_GUARD_ALWAYS_OFF = 0x00000002UL << 40;
-
-    private readonly object _sync = new();
-    private nint _processHandle;
-    private nint _jobHandle;
-    private Process? _fallbackProcess;
-    private bool _running;
-    private bool _disposed;
-
-    public event Action<string, bool>? OutputReceived;
-
-    public event Action<int>? Exited;
-
-    public bool IsRunning
-    {
-        get
-        {
-            lock (_sync)
-            {
-                return _running;
-            }
-        }
-    }
-
-    public void Start(string exePath, IReadOnlyList<string> arguments, string? workingDirectory)
-    {
-        lock (_sync)
-        {
-            ObjectDisposedException.ThrowIf(_disposed, this);
-            if (_running)
-            {
-                throw new InvalidOperationException("The emulator process is already running.");
-            }
-
-            if (OperatingSystem.IsWindows())
-            {
-                StartWindows(exePath, arguments, workingDirectory);
-            }
-            else
-            {
-                StartFallback(exePath, arguments, workingDirectory);
-            }
-
-            _running = true;
-        }
-    }
-
-    public void Stop()
-    {
-        lock (_sync)
-        {
-            if (!_running)
-            {
-                return;
-            }
-
-            // Prefer terminating the job: it kills the whole tree, including
-            // any children the emulator spawned, even when the main process
-            // is wedged in a GPU driver call.
-            if (_jobHandle != 0)
-            {
-                _ = TerminateJobObject(_jobHandle, 1);
-            }
-
-            if (_processHandle != 0)
-            {
-                _ = TerminateProcess(_processHandle, 1);
-            }
-
-            try
-            {
-                _fallbackProcess?.Kill(entireProcessTree: true);
-            }
-            catch (InvalidOperationException)
-            {
-                // Already exited.
-            }
-        }
-    }
-
-    public void Dispose()
-    {
-        lock (_sync)
-        {
-            if (_disposed)
-            {
-                return;
-            }
-
-            _disposed = true;
-        }
-
-        Stop();
-    }
-
-    private void StartWindows(string exePath, IReadOnlyList<string> arguments, string? workingDirectory)
-    {
-        // The CLI would otherwise relaunch itself into a mitigated child whose
-        // console output cannot flow through our pipes.
-        Environment.SetEnvironmentVariable("SHARPEMU_DISABLE_MITIGATION_RELAUNCH", "1");
-
-        var securityAttributes = new SECURITY_ATTRIBUTES
-        {
-            nLength = Marshal.SizeOf<SECURITY_ATTRIBUTES>(),
-            bInheritHandle = 1,
-        };
-
-        if (!CreatePipe(out var stdoutRead, out var stdoutWrite, ref securityAttributes, 0) ||
-            !CreatePipe(out var stderrRead, out var stderrWrite, ref securityAttributes, 0))
-        {
-            throw new Win32Exception(Marshal.GetLastWin32Error(), "Failed to create output pipes.");
-        }
-
-        _ = SetHandleInformation(stdoutRead, HANDLE_FLAG_INHERIT, 0);
-        _ = SetHandleInformation(stderrRead, HANDLE_FLAG_INHERIT, 0);
-
-        var startupInfoEx = new STARTUPINFOEX();
-        startupInfoEx.StartupInfo.cb = Marshal.SizeOf<STARTUPINFOEX>();
-        startupInfoEx.StartupInfo.dwFlags = STARTF_USESTDHANDLES;
-        startupInfoEx.StartupInfo.hStdOutput = stdoutWrite;
-        startupInfoEx.StartupInfo.hStdError = stderrWrite;
-
-        nint attributeList = 0;
-        nint mitigationPolicies = 0;
-        try
-        {
-            nuint attributeListSize = 0;
-            _ = InitializeProcThreadAttributeList(0, 1, 0, ref attributeListSize);
-            attributeList = Marshal.AllocHGlobal((nint)attributeListSize);
-            if (!InitializeProcThreadAttributeList(attributeList, 1, 0, ref attributeListSize))
-            {
-                throw new Win32Exception(Marshal.GetLastWin32Error(), "Failed to initialize the process attribute list.");
-            }
-
-            startupInfoEx.lpAttributeList = attributeList;
-
-            var policy1 = PROCESS_CREATION_MITIGATION_POLICY_CONTROL_FLOW_GUARD_ALWAYS_OFF;
-            var policy2 =
-                PROCESS_CREATION_MITIGATION_POLICY2_CET_USER_SHADOW_STACKS_ALWAYS_OFF |
-                PROCESS_CREATION_MITIGATION_POLICY2_USER_CET_SET_CONTEXT_IP_VALIDATION_ALWAYS_OFF |
-                PROCESS_CREATION_MITIGATION_POLICY2_XTENDED_CONTROL_FLOW_GUARD_ALWAYS_OFF;
-
-            mitigationPolicies = Marshal.AllocHGlobal(sizeof(ulong) * 2);
-            Marshal.WriteInt64(mitigationPolicies, unchecked((long)policy1));
-            Marshal.WriteInt64(nint.Add(mitigationPolicies, sizeof(long)), unchecked((long)policy2));
-
-            if (!UpdateProcThreadAttribute(
-                attributeList,
-                0,
-                PROC_THREAD_ATTRIBUTE_MITIGATION_POLICY,
-                mitigationPolicies,
-                (nuint)(sizeof(ulong) * 2),
-                0,
-                0))
-            {
-                throw new Win32Exception(Marshal.GetLastWin32Error(), "Failed to apply the mitigation policy.");
-            }
-
-            var currentDirectory = workingDirectory ?? Environment.CurrentDirectory;
-            var created = CreateProcessW(
-                exePath,
-                new StringBuilder(BuildCommandLine(exePath, arguments)),
-                0,
-                0,
-                true,
-                EXTENDED_STARTUPINFO_PRESENT | CREATE_NO_WINDOW,
-                0,
-                currentDirectory,
-                ref startupInfoEx,
-                out var processInfo);
-
-            if (!created)
-            {
-                // Some mitigation policy bits (e.g. XFG) are not supported on
-                // older Windows builds. Mirror the CLI's behavior and fall back
-                // to launching without the mitigation attribute list.
-                startupInfoEx.lpAttributeList = 0;
-                created = CreateProcessW(
-                    exePath,
-                    new StringBuilder(BuildCommandLine(exePath, arguments)),
-                    0,
-                    0,
-                    true,
-                    CREATE_NO_WINDOW,
-                    0,
-                    currentDirectory,
-                    ref startupInfoEx,
-                    out processInfo);
-            }
-
-            if (!created)
-            {
-                var error = Marshal.GetLastWin32Error();
-                throw new Win32Exception(error, $"Failed to start '{exePath}' (Win32 error {error}: {new Win32Exception(error).Message}).");
-            }
-
-            CloseHandle(processInfo.hThread);
-            _processHandle = processInfo.hProcess;
-
-            _jobHandle = CreateJobObjectW(0, null);
-            if (_jobHandle != 0 &&
-                (!TryEnableKillOnJobClose(_jobHandle) || !AssignProcessToJobObject(_jobHandle, processInfo.hProcess)))
-            {
-                CloseHandle(_jobHandle);
-                _jobHandle = 0;
-            }
-
-            StartReaderThread(stdoutRead, isError: false);
-            StartReaderThread(stderrRead, isError: true);
-            StartExitWatcherThread();
-        }
-        catch
-        {
-            CloseHandle(stdoutRead);
-            CloseHandle(stderrRead);
-            throw;
-        }
-        finally
-        {
-            // The child owns duplicated pipe write ends; closing ours lets the
-            // readers observe EOF when the child exits.
-            CloseHandle(stdoutWrite);
-            CloseHandle(stderrWrite);
-
-            if (attributeList != 0)
-            {
-                DeleteProcThreadAttributeList(attributeList);
-                Marshal.FreeHGlobal(attributeList);
-            }
-
-            if (mitigationPolicies != 0)
-            {
-                Marshal.FreeHGlobal(mitigationPolicies);
-            }
-        }
-    }
-
-    private void StartFallback(string exePath, IReadOnlyList<string> arguments, string? workingDirectory)
-    {
-        var startInfo = new ProcessStartInfo
-        {
-            FileName = exePath,
-            WorkingDirectory = workingDirectory ?? Environment.CurrentDirectory,
-            UseShellExecute = false,
-            CreateNoWindow = true,
-            RedirectStandardOutput = true,
-            RedirectStandardError = true,
-        };
-        foreach (var argument in arguments)
-        {
-            startInfo.ArgumentList.Add(argument);
-        }
-
-        var process = new Process { StartInfo = startInfo, EnableRaisingEvents = true };
-        process.OutputDataReceived += (_, e) =>
-        {
-            if (e.Data is not null)
-            {
-                OutputReceived?.Invoke(e.Data, false);
-            }
-        };
-        process.ErrorDataReceived += (_, e) =>
-        {
-            if (e.Data is not null)
-            {
-                OutputReceived?.Invoke(e.Data, true);
-            }
-        };
-        process.Exited += (_, _) =>
-        {
-            int exitCode;
-            try
-            {
-                exitCode = process.ExitCode;
-            }
-            catch (InvalidOperationException)
-            {
-                exitCode = -1;
-            }
-
-            OnExited(exitCode);
-        };
-
-        process.Start();
-        process.BeginOutputReadLine();
-        process.BeginErrorReadLine();
-        _fallbackProcess = process;
-    }
-
-    private void StartReaderThread(nint readHandle, bool isError)
-    {
-        var thread = new Thread(() =>
-        {
-            using var stream = new FileStream(new SafeFileHandle(readHandle, ownsHandle: true), FileAccess.Read);
-            using var reader = new StreamReader(stream, Encoding.UTF8);
-            try
-            {
-                while (reader.ReadLine() is { } line)
-                {
-                    OutputReceived?.Invoke(line, isError);
-                }
-            }
-            catch (IOException)
-            {
-                // Pipe broken on process teardown.
-            }
-        })
-        {
-            IsBackground = true,
-            Name = isError ? "SharpEmu stderr reader" : "SharpEmu stdout reader",
-        };
-        thread.Start();
-    }
-
-    private void StartExitWatcherThread()
-    {
-        var processHandle = _processHandle;
-        var thread = new Thread(() =>
-        {
-            _ = WaitForSingleObject(processHandle, INFINITE);
-            var exitCode = GetExitCodeProcess(processHandle, out var rawExitCode)
-                ? unchecked((int)rawExitCode)
-                : -1;
-            OnExited(exitCode);
-        })
-        {
-            IsBackground = true,
-            Name = "SharpEmu exit watcher",
-        };
-        thread.Start();
-    }
-
-    private void OnExited(int exitCode)
-    {
-        lock (_sync)
-        {
-            if (!_running)
-            {
-                return;
-            }
-
-            _running = false;
-            if (_processHandle != 0)
-            {
-                CloseHandle(_processHandle);
-                _processHandle = 0;
-            }
-
-            if (_jobHandle != 0)
-            {
-                CloseHandle(_jobHandle);
-                _jobHandle = 0;
-            }
-
-            _fallbackProcess?.Dispose();
-            _fallbackProcess = null;
-        }
-
-        Exited?.Invoke(exitCode);
-    }
-
-    private static bool TryEnableKillOnJobClose(nint jobHandle)
-    {
-        var extendedLimitInfo = new JOBOBJECT_EXTENDED_LIMIT_INFORMATION
-        {
-            BasicLimitInformation = new JOBOBJECT_BASIC_LIMIT_INFORMATION
-            {
-                LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE,
-            },
-        };
-
-        var size = Marshal.SizeOf<JOBOBJECT_EXTENDED_LIMIT_INFORMATION>();
-        var memory = Marshal.AllocHGlobal(size);
-        try
-        {
-            Marshal.StructureToPtr(extendedLimitInfo, memory, false);
-            return SetInformationJobObject(
-                jobHandle,
-                JobObjectExtendedLimitInformation,
-                memory,
-                unchecked((uint)size));
-        }
-        finally
-        {
-            Marshal.FreeHGlobal(memory);
-        }
-    }
-
-    private static string BuildCommandLine(string processPath, IReadOnlyList<string> args)
-    {
-        var builder = new StringBuilder();
-        builder.Append(QuoteArgument(processPath));
-        for (var i = 0; i < args.Count; i++)
-        {
-            builder.Append(' ');
-            builder.Append(QuoteArgument(args[i]));
-        }
-
-        return builder.ToString();
-    }
-
-    private static string QuoteArgument(string argument)
-    {
-        if (argument.Length == 0)
-        {
-            return "\"\"";
-        }
-
-        var needsQuotes = false;
-        foreach (var c in argument)
-        {
-            if (char.IsWhiteSpace(c) || c == '"')
-            {
-                needsQuotes = true;
-                break;
-            }
-        }
-
-        if (!needsQuotes)
-        {
-            return argument;
-        }
-
-        var builder = new StringBuilder(argument.Length + 2);
-        builder.Append('"');
-
-        var backslashCount = 0;
-        foreach (var c in argument)
-        {
-            if (c == '\\')
-            {
-                backslashCount++;
-                continue;
-            }
-
-            if (c == '"')
-            {
-                builder.Append('\\', (backslashCount * 2) + 1);
-                builder.Append('"');
-                backslashCount = 0;
-                continue;
-            }
-
-            if (backslashCount > 0)
-            {
-                builder.Append('\\', backslashCount);
-                backslashCount = 0;
-            }
-
-            builder.Append(c);
-        }
-
-        if (backslashCount > 0)
-        {
-            builder.Append('\\', backslashCount * 2);
-        }
-
-        builder.Append('"');
-        return builder.ToString();
-    }
-
-    [StructLayout(LayoutKind.Sequential)]
-    private struct SECURITY_ATTRIBUTES
-    {
-        public int nLength;
-        public nint lpSecurityDescriptor;
-        public int bInheritHandle;
-    }
-
-    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
-    private struct STARTUPINFO
-    {
-        public int cb;
-        public nint lpReserved;
-        public nint lpDesktop;
-        public nint lpTitle;
-        public int dwX;
-        public int dwY;
-        public int dwXSize;
-        public int dwYSize;
-        public int dwXCountChars;
-        public int dwYCountChars;
-        public int dwFillAttribute;
-        public int dwFlags;
-        public short wShowWindow;
-        public short cbReserved2;
-        public nint lpReserved2;
-        public nint hStdInput;
-        public nint hStdOutput;
-        public nint hStdError;
-    }
-
-    [StructLayout(LayoutKind.Sequential)]
-    private struct STARTUPINFOEX
-    {
-        public STARTUPINFO StartupInfo;
-        public nint lpAttributeList;
-    }
-
-    [StructLayout(LayoutKind.Sequential)]
-    private struct PROCESS_INFORMATION
-    {
-        public nint hProcess;
-        public nint hThread;
-        public int dwProcessId;
-        public int dwThreadId;
-    }
-
-    [StructLayout(LayoutKind.Sequential)]
-    private struct JOBOBJECT_BASIC_LIMIT_INFORMATION
-    {
-        public long PerProcessUserTimeLimit;
-        public long PerJobUserTimeLimit;
-        public uint LimitFlags;
-        public nuint MinimumWorkingSetSize;
-        public nuint MaximumWorkingSetSize;
-        public uint ActiveProcessLimit;
-        public nint Affinity;
-        public uint PriorityClass;
-        public uint SchedulingClass;
-    }
-
-    [StructLayout(LayoutKind.Sequential)]
-    private struct IO_COUNTERS
-    {
-        public ulong ReadOperationCount;
-        public ulong WriteOperationCount;
-        public ulong OtherOperationCount;
-        public ulong ReadTransferCount;
-        public ulong WriteTransferCount;
-        public ulong OtherTransferCount;
-    }
-
-    [StructLayout(LayoutKind.Sequential)]
-    private struct JOBOBJECT_EXTENDED_LIMIT_INFORMATION
-    {
-        public JOBOBJECT_BASIC_LIMIT_INFORMATION BasicLimitInformation;
-        public IO_COUNTERS IoInfo;
-        public nuint ProcessMemoryLimit;
-        public nuint JobMemoryLimit;
-        public nuint PeakProcessMemoryUsed;
-        public nuint PeakJobMemoryUsed;
-    }
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool CreatePipe(
-        out nint hReadPipe,
-        out nint hWritePipe,
-        ref SECURITY_ATTRIBUTES lpPipeAttributes,
-        uint nSize);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool SetHandleInformation(nint hObject, uint dwMask, uint dwFlags);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool InitializeProcThreadAttributeList(
-        nint lpAttributeList,
-        int dwAttributeCount,
-        int dwFlags,
-        ref nuint lpSize);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool UpdateProcThreadAttribute(
-        nint lpAttributeList,
-        uint dwFlags,
-        nint attribute,
-        nint lpValue,
-        nuint cbSize,
-        nint lpPreviousValue,
-        nint lpReturnSize);
-
-    [DllImport("kernel32.dll")]
-    private static extern void DeleteProcThreadAttributeList(nint lpAttributeList);
-
-    [DllImport("kernel32.dll", EntryPoint = "CreateJobObjectW", SetLastError = true, CharSet = CharSet.Unicode)]
-    private static extern nint CreateJobObjectW(nint lpJobAttributes, string? lpName);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool SetInformationJobObject(
-        nint hJob,
-        int jobObjectInfoClass,
-        nint lpJobObjectInfo,
-        uint cbJobObjectInfoLength);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool AssignProcessToJobObject(nint hJob, nint hProcess);
-
-    [DllImport("kernel32.dll", EntryPoint = "CreateProcessW", SetLastError = true, CharSet = CharSet.Unicode)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool CreateProcessW(
-        string applicationName,
-        StringBuilder commandLine,
-        nint processAttributes,
-        nint threadAttributes,
-        [MarshalAs(UnmanagedType.Bool)] bool inheritHandles,
-        uint creationFlags,
-        nint environment,
-        string currentDirectory,
-        ref STARTUPINFOEX startupInfo,
-        out PROCESS_INFORMATION processInformation);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    private static extern uint WaitForSingleObject(nint handle, uint milliseconds);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool GetExitCodeProcess(nint process, out uint exitCode);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool TerminateProcess(nint process, uint exitCode);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool TerminateJobObject(nint job, uint exitCode);
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool CloseHandle(nint handle);
-}

src/SharpEmu.GUI/GameEntry.cs

@@ -1,156 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using System.ComponentModel;
-using Avalonia;
-using Avalonia.Media;
-using Avalonia.Media.Imaging;
-
-namespace SharpEmu.GUI;
-
-public sealed class GameEntry : INotifyPropertyChanged
-{
-    // Placeholder gradients for games without cover art, picked
-    // deterministically from the game name so a game keeps its color.
-    private static readonly (Color Start, Color End)[] PlaceholderPalette =
-    {
-        (Color.Parse("#5B4B8A"), Color.Parse("#2C2A4A")),
-        (Color.Parse("#1F6E8C"), Color.Parse("#173B45")),
-        (Color.Parse("#7A4069"), Color.Parse("#3B1C32")),
-        (Color.Parse("#2D6A4F"), Color.Parse("#1B3A2B")),
-        (Color.Parse("#8C5425"), Color.Parse("#4A2B12")),
-        (Color.Parse("#4F6D9E"), Color.Parse("#263349")),
-        (Color.Parse("#8A4B4B"), Color.Parse("#3F2222")),
-        (Color.Parse("#3E7C7B"), Color.Parse("#1E3D3C")),
-    };
-
-    private Bitmap? _cover;
-    private IBrush? _placeholderBrush;
-    private long _sizeBytes;
-
-    public GameEntry(
-        string name, string? titleId, string path, long sizeBytes, string? coverPath, string? backgroundPath)
-    {
-        Name = name;
-        TitleId = titleId;
-        Path = path;
-        _sizeBytes = sizeBytes;
-        CoverPath = coverPath;
-        BackgroundPath = backgroundPath;
-        Initials = ComputeInitials(name);
-    }
-
-    public event PropertyChangedEventHandler? PropertyChanged;
-
-    public string Name { get; }
-
-    public string? TitleId { get; }
-
-    public string Path { get; }
-
-    /// <summary>
-    /// Total size of the game. Initially the eboot's own size from the scan;
-    /// replaced with the full install folder size once computed in the
-    /// background.
-    /// </summary>
-    public long SizeBytes
-    {
-        get => _sizeBytes;
-        set
-        {
-            if (_sizeBytes == value)
-            {
-                return;
-            }
-
-            _sizeBytes = value;
-            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(SizeBytes)));
-            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Detail)));
-        }
-    }
-
-    /// <summary>Path to the cover art image shipped with the game, if found.</summary>
-    public string? CoverPath { get; }
-
-    /// <summary>Path to the key art (pic0/pic1) shipped with the game, if found.</summary>
-    public string? BackgroundPath { get; }
-
-    /// <summary>
-    /// Decoded key art used as the window backdrop while this game is
-    /// selected. Loaded on demand and cached; not exposed via binding.
-    /// </summary>
-    public Bitmap? Background { get; set; }
-
-    public string Initials { get; }
-
-    // Built lazily: brushes are AvaloniaObjects that must be created on the
-    // UI thread, while GameEntry itself is constructed on the scan thread.
-    public IBrush PlaceholderBrush => _placeholderBrush ??= BuildPlaceholderBrush(Name);
-
-    /// <summary>Decoded cover art; loaded asynchronously after the library scan.</summary>
-    public Bitmap? Cover
-    {
-        get => _cover;
-        set
-        {
-            if (ReferenceEquals(_cover, value))
-            {
-                return;
-            }
-
-            _cover = value;
-            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Cover)));
-            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(HasCover)));
-        }
-    }
-
-    public bool HasCover => _cover is not null;
-
-    public string Detail => TitleId is not null
-        ? $"{TitleId}  •  {FormatSize(SizeBytes)}"
-        : FormatSize(SizeBytes);
-
-    private static string ComputeInitials(string name)
-    {
-        var initials = name
-            .Split(' ', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
-            .Where(word => char.IsLetterOrDigit(word[0]))
-            .Select(word => char.ToUpperInvariant(word[0]))
-            .Take(2)
-            .ToArray();
-
-        return initials.Length > 0 ? new string(initials) : "?";
-    }
-
-    private static IBrush BuildPlaceholderBrush(string name)
-    {
-        var hash = 0;
-        foreach (var ch in name)
-        {
-            hash = unchecked(hash * 31 + ch);
-        }
-
-        var (start, end) = PlaceholderPalette[(int)((uint)hash % PlaceholderPalette.Length)];
-        return new LinearGradientBrush
-        {
-            StartPoint = new RelativePoint(0, 0, RelativeUnit.Relative),
-            EndPoint = new RelativePoint(1, 1, RelativeUnit.Relative),
-            GradientStops =
-            {
-                new GradientStop(start, 0),
-                new GradientStop(end, 1),
-            },
-        };
-    }
-
-    private static string FormatSize(long bytes)
-    {
-        return bytes switch
-        {
-            >= 1L << 30 => $"{bytes / (double)(1L << 30):0.0} GiB",
-            >= 1L << 20 => $"{bytes / (double)(1L << 20):0.0} MiB",
-            >= 1L << 10 => $"{bytes / (double)(1L << 10):0.0} KiB",
-            _ => $"{bytes} B",
-        };
-    }
-}

src/SharpEmu.GUI/GuiLauncher.cs

@@ -1,47 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using Avalonia;
-
-namespace SharpEmu.GUI;
-
-/// <summary>
-/// Entry point for the desktop frontend, hosted by the SharpEmu executable
-/// when it is started without command-line arguments.
-/// </summary>
-public static class GuiLauncher
-{
-    public static int Run()
-    {
-        try
-        {
-            BuildAvaloniaApp().StartWithClassicDesktopLifetime(Array.Empty<string>());
-            return 0;
-        }
-        catch (Exception ex)
-        {
-            WriteCrashLog(ex);
-            throw;
-        }
-    }
-
-    public static AppBuilder BuildAvaloniaApp()
-        => AppBuilder.Configure<App>()
-            .UsePlatformDetect()
-            .WithInterFont()
-            .LogToTrace();
-
-    private static void WriteCrashLog(Exception ex)
-    {
-        try
-        {
-            File.AppendAllText(
-                Path.Combine(AppContext.BaseDirectory, "gui-crash.log"),
-                $"[{DateTime.Now:yyyy-MM-dd HH:mm:ss}] {ex}{Environment.NewLine}{Environment.NewLine}");
-        }
-        catch (Exception)
-        {
-            // Crash logging is best-effort.
-        }
-    }
-}

src/SharpEmu.GUI/GuiSettings.cs

@@ -1,94 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using System.Text.Json;
-
-namespace SharpEmu.GUI;
-
-public sealed class GuiSettings
-{
-    private static readonly JsonSerializerOptions SerializerOptions = new()
-    {
-        WriteIndented = true,
-    };
-
-    public List<string> GameFolders { get; set; } = new();
-
-    /// <summary>Eboot paths hidden from the library via "Remove from library".</summary>
-    public List<string> ExcludedGames { get; set; } = new();
-
-    public string LogLevel { get; set; } = "Info";
-
-    public int ImportTraceLimit { get; set; }
-
-    public bool StrictDynlibResolution { get; set; }
-
-    /// <summary>
-    /// Mirror emulator output to user/logs/&lt;titleId&gt;-&lt;timestamp&gt;.log, if <see cref="LogFilePath"/> is null.
-    /// </summary>
-    public bool LogToFile { get; set; }
-
-    /// <summary>If <see cref="LogToFile"/> is true it logs to this file path.</summary>
-    public string? LogFilePath { get; set; }
-
-    /// <summary> 
-    /// If <see cref="OverrideLogFile"/> is false it appends &lt;titleId&gt;-&lt;timestamp&gt; to the filename specified by 
-    /// <see cref="LogFilePath"/>. Otherwise it uses the exact filename from <see cref="LogFilePath"/>
-    /// </summary>
-    public bool OverrideLogFile { get; set; }
-
-    /// <summary>Loop the selected game's sce_sys/snd0.at9 preview music.</summary>
-    public bool PlayTitleMusic { get; set; } = true;
-
-    public string? EmulatorPath { get; set; }
-
-    /// <summary>Publish launcher/game status to Discord Rich Presence.</summary>
-    public bool DiscordRichPresence { get; set; } = true;
-
-    /// <summary>
-    /// Discord application ID used for Rich Presence; the default is the
-    /// SharpEmu application. Override to rebrand what Discord shows as
-    /// "Playing …" (register at discord.com/developers/applications).
-    /// </summary>
-    public string DiscordClientId { get; set; } = "1525606762248540221";
-
-    // The emulator is portable and keeps its data next to the executable;
-    // the GUI follows the same convention.
-    public static string SettingsPath => Path.Combine(AppContext.BaseDirectory, "gui-settings.json");
-
-    public static GuiSettings Load()
-    {
-        try
-        {
-            if (File.Exists(SettingsPath))
-            {
-                var json = File.ReadAllText(SettingsPath);
-                return JsonSerializer.Deserialize<GuiSettings>(json, SerializerOptions) ?? new GuiSettings();
-            }
-        }
-        catch (Exception)
-        {
-            // Corrupt or unreadable settings fall back to defaults.
-        }
-
-        return new GuiSettings();
-    }
-
-    public void Save()
-    {
-        try
-        {
-            var directory = Path.GetDirectoryName(SettingsPath);
-            if (!string.IsNullOrEmpty(directory))
-            {
-                Directory.CreateDirectory(directory);
-            }
-
-            File.WriteAllText(SettingsPath, JsonSerializer.Serialize(this, SerializerOptions));
-        }
-        catch (Exception)
-        {
-            // Settings persistence is best-effort.
-        }
-    }
-}

src/SharpEmu.GUI/LogLine.cs

@@ -1,8 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using Avalonia.Media;
-
-namespace SharpEmu.GUI;
-
-public sealed record LogLine(string Text, IBrush Brush);

src/SharpEmu.GUI/MainWindow.axaml

@@ -1,291 +0,0 @@
-<!--
-Copyright (C) 2026 SharpEmu Emulator Project
-SPDX-License-Identifier: GPL-2.0-or-later
--->
-
-<Window xmlns="https://github.com/avaloniaui"
-        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-        x:Class="SharpEmu.GUI.MainWindow"
-        Title="SharpEmu"
-        Width="1280" Height="820"
-        MinWidth="980" MinHeight="640"
-        WindowStartupLocation="CenterScreen"
-        Background="{StaticResource BgBrush}"
-        ExtendClientAreaToDecorationsHint="True"
-        ExtendClientAreaChromeHints="PreferSystemChrome"
-        ExtendClientAreaTitleBarHeightHint="44"
-        Icon="avares://SharpEmu.GUI/Assets/SharpEmu.ico"
-        KeyDown="OnKeyDown">
-
-  <Grid RowDefinitions="44,*,32">
-
-    <!-- Selected-game backdrop: key art behind the main content, dimmed by
-         a scrim so tiles and text stay readable. Fades on selection. -->
-    <Panel Grid.Row="1" ClipToBounds="True">
-      <Image x:Name="BackdropImage" Stretch="UniformToFill" Opacity="0"
-             HorizontalAlignment="Center" VerticalAlignment="Center">
-        <Image.Transitions>
-          <Transitions>
-            <DoubleTransition Property="Opacity" Duration="0:0:0.35" />
-          </Transitions>
-        </Image.Transitions>
-      </Image>
-      <Border>
-        <Border.Background>
-          <LinearGradientBrush StartPoint="0%,0%" EndPoint="0%,100%">
-            <GradientStop Offset="0" Color="#730D1017" />
-            <GradientStop Offset="0.55" Color="#BF0D1017" />
-            <GradientStop Offset="1" Color="#EB0D1017" />
-          </LinearGradientBrush>
-        </Border.Background>
-      </Border>
-    </Panel>
-
-    <!-- Title bar -->
-    <Grid x:Name="TitleBar" Grid.Row="0" Background="{StaticResource ChromeBrush}">
-      <StackPanel Orientation="Horizontal" Spacing="10" Margin="16,0" VerticalAlignment="Center">
-        <Image Source="avares://SharpEmu.GUI/Assets/SharpEmu.ico" Width="20" Height="20"
-               RenderOptions.BitmapInterpolationMode="HighQuality" />
-        <TextBlock Text="SharpEmu" FontSize="14" FontWeight="SemiBold" VerticalAlignment="Center" />
-        <Border Classes="pill">
-          <TextBlock x:Name="VersionText" Text="v0.0.1" FontSize="11" Foreground="{StaticResource MutedBrush}" />
-        </Border>
-      </StackPanel>
-    </Grid>
-
-    <!-- Main content -->
-    <Grid Grid.Row="1" Margin="18,14,18,14" RowDefinitions="Auto,*,Auto,Auto">
-
-      <!-- Library toolbar -->
-      <Grid Grid.Row="0" ColumnDefinitions="Auto,Auto,*,Auto,Auto,Auto,Auto" Margin="6,0,6,12">
-        <TextBlock Grid.Column="0" Text="Library" FontSize="22" FontWeight="Bold" VerticalAlignment="Center" />
-        <Border Grid.Column="1" Classes="pill" Margin="12,2,0,0" VerticalAlignment="Center">
-          <TextBlock x:Name="GameCountText" Text="0 games" FontSize="11" Foreground="{StaticResource MutedBrush}" />
-        </Border>
-        <TextBox Grid.Column="3" x:Name="SearchBox" Watermark="Search library…" Width="280"
-                 VerticalAlignment="Center" Margin="0,0,12,0" />
-        <Button Grid.Column="4" x:Name="AddFolderButton" Classes="ghost" Content="＋ Add folder"
-                VerticalAlignment="Center" Margin="0,0,8,0" />
-        <Button Grid.Column="5" x:Name="RescanButton" Classes="ghost" Content="⟳ Rescan"
-                VerticalAlignment="Center" Margin="0,0,8,0" />
-        <Button Grid.Column="6" x:Name="OpenFileButton" Classes="ghost" Content="Open file…"
-                VerticalAlignment="Center" />
-      </Grid>
-
-      <!-- Cover-art grid -->
-      <Panel Grid.Row="1">
-        <ListBox x:Name="GameList" Classes="tileGrid" Background="Transparent"
-                 SelectionMode="Single" Padding="0">
-          <ListBox.ContextMenu>
-            <ContextMenu x:Name="GameContextMenu" Placement="Pointer">
-              <MenuItem x:Name="CtxLaunch" Header="Launch" FontWeight="SemiBold">
-                <MenuItem.Icon>
-                  <TextBlock Text="▶" FontSize="11" Foreground="{StaticResource AccentHoverBrush}"
-                             HorizontalAlignment="Center" VerticalAlignment="Center" />
-                </MenuItem.Icon>
-              </MenuItem>
-              <MenuItem x:Name="CtxOpenFolder" Header="Open game folder">
-                <MenuItem.Icon>
-                  <TextBlock Text="📂" FontSize="12" HorizontalAlignment="Center" VerticalAlignment="Center" />
-                </MenuItem.Icon>
-              </MenuItem>
-              <Separator />
-              <MenuItem x:Name="CtxCopyPath" Header="Copy path">
-                <MenuItem.Icon>
-                  <TextBlock Text="⧉" FontSize="13" Foreground="{StaticResource MutedBrush}"
-                             HorizontalAlignment="Center" VerticalAlignment="Center" />
-                </MenuItem.Icon>
-              </MenuItem>
-              <MenuItem x:Name="CtxCopyTitleId" Header="Copy title ID">
-                <MenuItem.Icon>
-                  <TextBlock Text="⧉" FontSize="13" Foreground="{StaticResource MutedBrush}"
-                             HorizontalAlignment="Center" VerticalAlignment="Center" />
-                </MenuItem.Icon>
-              </MenuItem>
-              <Separator />
-              <MenuItem x:Name="CtxRemove" Header="Remove from library"
-                        Foreground="{StaticResource DangerHoverBrush}">
-                <MenuItem.Icon>
-                  <TextBlock Text="✕" FontSize="12" Foreground="{StaticResource DangerHoverBrush}"
-                             HorizontalAlignment="Center" VerticalAlignment="Center" />
-                </MenuItem.Icon>
-              </MenuItem>
-            </ContextMenu>
-          </ListBox.ContextMenu>
-          <ListBox.ItemsPanel>
-            <ItemsPanelTemplate>
-              <WrapPanel />
-            </ItemsPanelTemplate>
-          </ListBox.ItemsPanel>
-          <ListBox.ItemTemplate>
-            <DataTemplate>
-              <StackPanel Width="128" Height="186" Spacing="7">
-                <Border Classes="coverShadow" Width="128" Height="128">
-                  <Border Classes="coverClip">
-                    <Panel>
-                      <Border Background="{Binding PlaceholderBrush}" IsVisible="{Binding !HasCover}">
-                        <TextBlock Text="{Binding Initials}" FontSize="36" FontWeight="Bold"
-                                   Foreground="#E8ECF4" Opacity="0.85"
-                                   HorizontalAlignment="Center" VerticalAlignment="Center" />
-                      </Border>
-                      <Image Source="{Binding Cover}" Stretch="UniformToFill" IsVisible="{Binding HasCover}" />
-                    </Panel>
-                  </Border>
-                </Border>
-                <StackPanel Spacing="2">
-                  <TextBlock Text="{Binding Name}" FontSize="13" FontWeight="SemiBold"
-                             TextWrapping="Wrap" MaxLines="2" TextTrimming="CharacterEllipsis" />
-                  <TextBlock Text="{Binding Detail}" FontSize="11" Foreground="{StaticResource MutedBrush}"
-                             TextTrimming="CharacterEllipsis" />
-                </StackPanel>
-              </StackPanel>
-            </DataTemplate>
-          </ListBox.ItemTemplate>
-        </ListBox>
-
-        <!-- Empty state -->
-        <StackPanel x:Name="EmptyState" Spacing="10" HorizontalAlignment="Center" VerticalAlignment="Center"
-                    IsVisible="False">
-          <TextBlock Text="🎮" FontSize="44" HorizontalAlignment="Center" Opacity="0.7" />
-          <TextBlock x:Name="EmptyStateTitle" Text="Your library is empty" FontSize="18" FontWeight="SemiBold"
-                     HorizontalAlignment="Center" />
-          <TextBlock x:Name="EmptyStateHint" Text="Add a folder containing your games to get started."
-                     FontSize="13" Foreground="{StaticResource MutedBrush}" HorizontalAlignment="Center" />
-          <Button x:Name="EmptyAddFolderButton" Classes="accent" Content="＋ Add game folder"
-                  HorizontalAlignment="Center" Margin="0,8,0,0" />
-        </StackPanel>
-      </Panel>
-
-      <!-- Console (collapsible) -->
-      <Border Grid.Row="2" x:Name="ConsolePanel" Classes="card" Padding="0" Height="240"
-              Margin="0,12,0,0" IsVisible="False">
-        <Grid RowDefinitions="Auto,*">
-          <Grid Grid.Row="0" ColumnDefinitions="*,Auto,Auto,Auto,Auto,Auto" Margin="16,12,16,8">
-            <TextBlock Classes="sectionTitle" Text="CONSOLE" VerticalAlignment="Center" />
-            <TextBox Grid.Column="1" FontSize="12" Margin="0,0,12,0" x:Name="ConsoleSearchBox"
-                    Watermark="Search..." Width="320" />
-            <CheckBox Grid.Column="2" x:Name="AutoScrollCheck" Content="Auto-scroll" IsChecked="True"
-                    FontSize="12" Margin="0,0,12,0" />
-            <Button Grid.Column="3" x:Name="DetachConsoleButton" Classes="ghost" Content="Split" FontSize="12"
-                    Padding="10,4" Margin="0,0,8,0" />
-            <Button Grid.Column="4" x:Name="CopyLogButton" Classes="ghost" Content="Copy" FontSize="12"
-                    Padding="10,4" Margin="0,0,8,0" />
-            <Button Grid.Column="5" x:Name="ClearLogButton" Classes="ghost" Content="Clear" FontSize="12"
-                    Padding="10,4" />
-          </Grid>
-          <ListBox Grid.Row="1" x:Name="ConsoleList" Classes="console" BorderThickness="0,1,0,0"
-                   BorderBrush="{StaticResource CardBorderBrush}" CornerRadius="0,0,12,12">
-            <ListBox.ItemTemplate>
-              <DataTemplate>
-                <TextBlock Text="{Binding Text}" Foreground="{Binding Brush}" TextWrapping="NoWrap" />
-              </DataTemplate>
-            </ListBox.ItemTemplate>
-          </ListBox>
-        </Grid>
-      </Border>
-
-      <!-- Launch bar -->
-      <Border Grid.Row="3" Classes="card" Margin="0,12,0,0" Padding="14">
-        <StackPanel Spacing="14">
-          <Grid ColumnDefinitions="Auto,*,Auto">
-
-            <!-- Selected game cover thumbnail -->
-            <Border Grid.Column="0" Classes="coverClip" Width="56" Height="56" CornerRadius="8"
-                    VerticalAlignment="Center">
-              <Panel x:Name="SelectedCoverPanel">
-                <Border Background="{Binding PlaceholderBrush, FallbackValue={x:Null}}"
-                        IsVisible="{Binding !HasCover, FallbackValue=False}">
-                  <TextBlock Text="{Binding Initials}" FontSize="20" FontWeight="Bold"
-                             Foreground="#E8ECF4" Opacity="0.85"
-                             HorizontalAlignment="Center" VerticalAlignment="Center" />
-                </Border>
-                <Image Source="{Binding Cover}" Stretch="UniformToFill"
-                       IsVisible="{Binding HasCover, FallbackValue=False}" />
-              </Panel>
-            </Border>
-
-            <StackPanel Grid.Column="1" Spacing="3" VerticalAlignment="Center" Margin="14,0,14,0">
-              <TextBlock x:Name="SelectedGameTitle" Text="No game selected" FontSize="16" FontWeight="Bold"
-                         TextTrimming="CharacterEllipsis" />
-              <TextBlock x:Name="SelectedGamePath" Text="Pick a game from the library, or open an eboot.bin directly."
-                         FontSize="11" Foreground="{StaticResource MutedBrush}" TextTrimming="CharacterEllipsis" />
-              <StackPanel Orientation="Horizontal" Spacing="7">
-                <Ellipse x:Name="StatusDot" Width="8" Height="8" Fill="{StaticResource FaintBrush}"
-                         VerticalAlignment="Center" />
-                <TextBlock x:Name="StatusText" Text="Idle" FontSize="11" Foreground="{StaticResource MutedBrush}"
-                           VerticalAlignment="Center" />
-              </StackPanel>
-            </StackPanel>
-
-            <StackPanel Grid.Column="2" Orientation="Horizontal" Spacing="8" VerticalAlignment="Center">
-              <ToggleButton x:Name="OptionsToggle" Classes="ghost" Content="⚙ Options" />
-              <ToggleButton x:Name="ConsoleToggle" Classes="ghost" Content="≡ Console" />
-              <Button x:Name="LaunchButton" Classes="accent" Content="▶  Launch" IsEnabled="False" />
-              <Button x:Name="StopButton" Classes="danger" Content="■  Stop" IsEnabled="False" />
-            </StackPanel>
-          </Grid>
-
-          <!-- Launch options (collapsible) -->
-          <WrapPanel x:Name="OptionsPanel" IsVisible="False">
-            <StackPanel Margin="0,0,24,0">
-              <TextBlock Classes="fieldLabel" Text="CPU engine" />
-              <ComboBox x:Name="CpuEngineBox" Width="150" SelectedIndex="0" CornerRadius="8">
-                <ComboBoxItem Content="Native" />
-              </ComboBox>
-            </StackPanel>
-            <StackPanel Margin="0,0,24,0">
-              <TextBlock Classes="fieldLabel" Text="Log level" />
-              <ComboBox x:Name="LogLevelBox" Width="150" SelectedIndex="2" CornerRadius="8">
-                <ComboBoxItem Content="Trace" />
-                <ComboBoxItem Content="Debug" />
-                <ComboBoxItem Content="Info" />
-                <ComboBoxItem Content="Warning" />
-                <ComboBoxItem Content="Error" />
-                <ComboBoxItem Content="Critical" />
-              </ComboBox>
-            </StackPanel>
-            <StackPanel Margin="0,0,24,0">
-              <TextBlock Classes="fieldLabel" Text="Import trace limit (0 = off)" />
-              <NumericUpDown x:Name="TraceImportsBox" Width="170" Minimum="0" Maximum="4096" Increment="16"
-                             Value="0" FormatString="0" CornerRadius="8" />
-            </StackPanel>
-            <StackPanel Margin="0,0,24,0">
-              <TextBlock Classes="fieldLabel" Text="Strict dynlib resolution" />
-              <ToggleSwitch x:Name="StrictToggle" OnContent="On" OffContent="Off" />
-            </StackPanel>
-            <StackPanel Margin="0,0,24,0">
-              <TextBlock Classes="fieldLabel" Text="Log to file" />
-              <ToggleSwitch x:Name="LogToFileToggle" OnContent="On" OffContent="Off" />
-            </StackPanel>
-            <StackPanel Margin="0,0,24,0">
-              <TextBlock Classes="fieldLabel" Text="Log file path" />
-              <Button x:Name="SelectLogFilePathButton" Classes="ghost" Content="Select…"
-                VerticalAlignment="Center" />
-            </StackPanel>
-            <StackPanel Margin="0,0,24,0">
-              <TextBlock Classes="fieldLabel" Text="Override log file" />
-              <ToggleSwitch x:Name="OverrideLogFileToggle" OnContent="On" OffContent="Off" />
-            </StackPanel>
-            <StackPanel Margin="0,0,24,0">
-              <TextBlock Classes="fieldLabel" Text="Title music" />
-              <ToggleSwitch x:Name="TitleMusicToggle" OnContent="On" OffContent="Off" IsChecked="True" />
-            </StackPanel>
-            <StackPanel>
-              <TextBlock Classes="fieldLabel" Text="Discord presence" />
-              <ToggleSwitch x:Name="DiscordToggle" OnContent="On" OffContent="Off" />
-            </StackPanel>
-          </WrapPanel>
-        </StackPanel>
-      </Border>
-    </Grid>
-
-    <!-- Status bar -->
-    <Grid Grid.Row="2" Background="{StaticResource ChromeBrush}" ColumnDefinitions="*,Auto">
-      <TextBlock x:Name="EmulatorPathText" Grid.Column="0" Text="Emulator: locating…" FontSize="11"
-                 Foreground="{StaticResource FaintBrush}" VerticalAlignment="Center" Margin="16,0"
-                 TextTrimming="CharacterEllipsis" />
-      <TextBlock x:Name="StatusBarRight" Grid.Column="1" Text="" FontSize="11"
-                 Foreground="{StaticResource FaintBrush}" VerticalAlignment="Center" Margin="16,0" />
-    </Grid>
-  </Grid>
-</Window>

src/SharpEmu.GUI/SharpEmu.GUI.csproj

@@ -1,44 +0,0 @@
-<!--
-Copyright (C) 2026 SharpEmu Emulator Project
-SPDX-License-Identifier: GPL-2.0-or-later
--->
-
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <!-- Class library: the GUI is hosted by SharpEmu.CLI, which opens it when
-       the executable is started without arguments. -->
-  <PropertyGroup>
-    <GenerateDocumentationFile>false</GenerateDocumentationFile>
-    <Version>0.0.1</Version>
-  </PropertyGroup>
-
-  <!-- Dependency-free; provides the BuildInfo provenance shown in the
-       title bar. -->
-  <ItemGroup>
-    <ProjectReference Include="..\SharpEmu.Logging\SharpEmu.Logging.csproj" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <PackageReference Include="Avalonia" />
-    <PackageReference Include="Avalonia.Desktop" />
-    <PackageReference Include="Avalonia.Fonts.Inter" />
-    <PackageReference Include="Avalonia.Themes.Fluent" />
-    <PackageReference Include="Tmds.DBus.Protocol" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <AvaloniaResource Include="..\..\assets\images\SharpEmu.ico" Link="Assets/SharpEmu.ico" />
-  </ItemGroup>
-
-  <!-- The controller readers (DualSense raw HID + Xbox XInput) are shared
-       with the emulator's pad HLE. They are dependency-free, so they are
-       compiled in directly rather than pulling a reference to all of
-       SharpEmu.Libs into the launcher. -->
-  <ItemGroup>
-    <Compile Include="..\SharpEmu.Libs\Pad\PadState.cs" Link="Input/PadState.cs" />
-    <Compile Include="..\SharpEmu.Libs\Pad\HidNative.cs" Link="Input/HidNative.cs" />
-    <Compile Include="..\SharpEmu.Libs\Pad\DualSenseReader.cs" Link="Input/DualSenseReader.cs" />
-    <Compile Include="..\SharpEmu.Libs\Pad\XInputReader.cs" Link="Input/XInputReader.cs" />
-  </ItemGroup>
-
-</Project>

src/SharpEmu.GUI/SndPreviewPlayer.cs

@@ -1,301 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using System.Buffers.Binary;
-using System.Runtime.InteropServices;
-using System.Text;
-using LibAtrac9;
-
-namespace SharpEmu.GUI;
-
-/// <summary>
-/// Loops a game's sce_sys/snd0.at9 preview music while the game is selected
-/// in the library, like the console home screen. The ATRAC9 stream is decoded
-/// to WAV on a background task (vendored LibAtrac9); playback uses winmm's
-/// PlaySound, so this is Windows-only and a no-op elsewhere.
-/// </summary>
-internal sealed class SndPreviewPlayer
-{
-    private const uint SND_ASYNC = 0x0001;
-    private const uint SND_NODEFAULT = 0x0002;
-    private const uint SND_MEMORY = 0x0004;
-    private const uint SND_LOOP = 0x0008;
-
-    private readonly object _sync = new();
-    private int _generation;
-    private GCHandle _pinnedWav;
-    private bool _playing;
-    private bool _paused;
-    private string? _cachedPath;
-    private byte[]? _cachedWav;
-
-    /// <summary>Starts looping the given snd0.at9 after a short debounce.</summary>
-    public void Play(string at9Path)
-    {
-        if (!OperatingSystem.IsWindows())
-        {
-            return;
-        }
-
-        int generation;
-        lock (_sync)
-        {
-            generation = ++_generation;
-        }
-
-        _ = Task.Run(async () =>
-        {
-            // Debounce so skimming through the library does not decode (or
-            // start) a preview per tile.
-            await Task.Delay(300).ConfigureAwait(false);
-
-            byte[]? wav;
-            lock (_sync)
-            {
-                if (generation != _generation)
-                {
-                    return;
-                }
-
-                wav = string.Equals(_cachedPath, at9Path, StringComparison.OrdinalIgnoreCase)
-                    ? _cachedWav
-                    : null;
-            }
-
-            if (wav is null)
-            {
-                try
-                {
-                    wav = DecodeAt9ToWav(File.ReadAllBytes(at9Path));
-                }
-                catch (Exception)
-                {
-                    return; // corrupt or unsupported preview: stay silent
-                }
-            }
-
-            lock (_sync)
-            {
-                if (generation != _generation)
-                {
-                    return;
-                }
-
-                _cachedPath = at9Path;
-                _cachedWav = wav;
-                StopLocked();
-
-                // The WAV image must stay pinned while winmm plays from it.
-                _pinnedWav = GCHandle.Alloc(wav, GCHandleType.Pinned);
-                _playing = PlaySound(_pinnedWav.AddrOfPinnedObject(), 0, SND_MEMORY | SND_ASYNC | SND_LOOP | SND_NODEFAULT);
-                if (!_playing)
-                {
-                    _pinnedWav.Free();
-                }
-            }
-        });
-    }
-
-    public void Stop()
-    {
-        if (!OperatingSystem.IsWindows())
-        {
-            return;
-        }
-
-        lock (_sync)
-        {
-            _generation++;
-            StopLocked();
-        }
-    }
-
-    /// <summary>
-    /// Silences playback but keeps the decoded track ready, so
-    /// <see cref="Resume"/> can restart it (winmm cannot truly pause).
-    /// </summary>
-    public void Pause()
-    {
-        if (!OperatingSystem.IsWindows())
-        {
-            return;
-        }
-
-        lock (_sync)
-        {
-            if (!_playing)
-            {
-                return;
-            }
-
-            _ = PlaySound(0, 0, 0);
-            _playing = false;
-            _paused = true;
-        }
-    }
-
-    /// <summary>Restarts the track silenced by <see cref="Pause"/>.</summary>
-    public void Resume()
-    {
-        if (!OperatingSystem.IsWindows())
-        {
-            return;
-        }
-
-        lock (_sync)
-        {
-            if (!_paused || !_pinnedWav.IsAllocated)
-            {
-                return;
-            }
-
-            _paused = false;
-            _playing = PlaySound(_pinnedWav.AddrOfPinnedObject(), 0, SND_MEMORY | SND_ASYNC | SND_LOOP | SND_NODEFAULT);
-        }
-    }
-
-    private void StopLocked()
-    {
-        _ = PlaySound(0, 0, 0);
-        _playing = false;
-        _paused = false;
-        if (_pinnedWav.IsAllocated)
-        {
-            _pinnedWav.Free();
-        }
-    }
-
-    private static readonly Guid Atrac9SubFormat = new("47E142D2-36BA-4D8D-88FC-61654F8C836C");
-
-    /// <summary>
-    /// Decodes a Sony AT9 (RIFF-wrapped ATRAC9) file to a PCM16 WAV image.
-    /// Layout per Sony's container: an extensible fmt chunk whose extension
-    /// carries the 4-byte codec config, a fact chunk with the sample count
-    /// and encoder delay, and superframes in the data chunk.
-    /// </summary>
-    private static byte[] DecodeAt9ToWav(byte[] file)
-    {
-        using var reader = new BinaryReader(new MemoryStream(file), Encoding.ASCII);
-        if (Encoding.ASCII.GetString(reader.ReadBytes(4)) != "RIFF")
-        {
-            throw new InvalidDataException("Not a RIFF file.");
-        }
-
-        reader.BaseStream.Position += 4; // riff size
-        if (Encoding.ASCII.GetString(reader.ReadBytes(4)) != "WAVE")
-        {
-            throw new InvalidDataException("Not a WAVE file.");
-        }
-
-        byte[]? configData = null;
-        var sampleCount = 0;
-        var encoderDelay = 0;
-        var dataOffset = -1;
-        var dataSize = 0;
-
-        while (reader.BaseStream.Position + 8 <= reader.BaseStream.Length)
-        {
-            var chunkId = Encoding.ASCII.GetString(reader.ReadBytes(4));
-            var chunkSize = reader.ReadInt32();
-            var chunkStart = reader.BaseStream.Position;
-            switch (chunkId)
-            {
-                case "fmt ":
-                    var formatTag = reader.ReadUInt16();
-                    reader.BaseStream.Position = chunkStart + 24; // to SubFormat GUID
-                    var subFormat = new Guid(reader.ReadBytes(16));
-                    if (formatTag != 0xFFFE || subFormat != Atrac9SubFormat)
-                    {
-                        throw new InvalidDataException("Not an ATRAC9 stream.");
-                    }
-
-                    reader.BaseStream.Position += 4; // version info
-                    configData = reader.ReadBytes(4);
-                    break;
-                case "fact":
-                    sampleCount = reader.ReadInt32();
-                    reader.BaseStream.Position += 4; // input overlap delay
-                    encoderDelay = reader.ReadInt32();
-                    break;
-                case "data":
-                    dataOffset = (int)chunkStart;
-                    dataSize = chunkSize;
-                    break;
-            }
-
-            reader.BaseStream.Position = chunkStart + chunkSize + (chunkSize & 1);
-        }
-
-        if (configData is null || sampleCount <= 0 || dataOffset < 0)
-        {
-            throw new InvalidDataException("Missing fmt, fact, or data chunk.");
-        }
-
-        var decoder = new Atrac9Decoder();
-        decoder.Initialize(configData);
-        var config = decoder.Config;
-
-        var superframeCount = (sampleCount + encoderDelay + config.SuperframeSamples - 1) / config.SuperframeSamples;
-        superframeCount = Math.Min(superframeCount, dataSize / config.SuperframeBytes);
-
-        var channels = config.ChannelCount;
-        var pcmBuffer = new short[channels][];
-        for (var i = 0; i < channels; i++)
-        {
-            pcmBuffer[i] = new short[config.SuperframeSamples];
-        }
-
-        var wav = new byte[44 + (sampleCount * channels * 2)];
-        WriteWavHeader(wav, channels, config.SampleRate, sampleCount);
-
-        var superframe = new byte[config.SuperframeBytes];
-        var decodedIndex = 0L; // per-channel, includes the encoder delay
-        var written = 0;
-        for (var f = 0; f < superframeCount && written < sampleCount; f++)
-        {
-            Buffer.BlockCopy(file, dataOffset + (f * config.SuperframeBytes), superframe, 0, config.SuperframeBytes);
-            decoder.Decode(superframe, pcmBuffer);
-            for (var s = 0; s < config.SuperframeSamples && written < sampleCount; s++)
-            {
-                if (decodedIndex++ < encoderDelay)
-                {
-                    continue;
-                }
-
-                var sampleOffset = 44 + ((long)written * channels * 2);
-                for (var ch = 0; ch < channels; ch++)
-                {
-                    BinaryPrimitives.WriteInt16LittleEndian(
-                        wav.AsSpan((int)(sampleOffset + (ch * 2))),
-                        pcmBuffer[ch][s]);
-                }
-
-                written++;
-            }
-        }
-
-        return wav;
-    }
-
-    private static void WriteWavHeader(byte[] wav, int channels, int sampleRate, int sampleCount)
-    {
-        var span = wav.AsSpan();
-        Encoding.ASCII.GetBytes("RIFF").CopyTo(span);
-        BinaryPrimitives.WriteInt32LittleEndian(span[4..], wav.Length - 8);
-        Encoding.ASCII.GetBytes("WAVE").CopyTo(span[8..]);
-        Encoding.ASCII.GetBytes("fmt ").CopyTo(span[12..]);
-        BinaryPrimitives.WriteInt32LittleEndian(span[16..], 16);
-        BinaryPrimitives.WriteInt16LittleEndian(span[20..], 1); // PCM
-        BinaryPrimitives.WriteInt16LittleEndian(span[22..], (short)channels);
-        BinaryPrimitives.WriteInt32LittleEndian(span[24..], sampleRate);
-        BinaryPrimitives.WriteInt32LittleEndian(span[28..], sampleRate * channels * 2);
-        BinaryPrimitives.WriteInt16LittleEndian(span[32..], (short)(channels * 2));
-        BinaryPrimitives.WriteInt16LittleEndian(span[34..], 16); // bits per sample
-        Encoding.ASCII.GetBytes("data").CopyTo(span[36..]);
-        BinaryPrimitives.WriteInt32LittleEndian(span[40..], sampleCount * channels * 2);
-    }
-
-    [DllImport("winmm.dll")]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool PlaySound(nint sound, nint module, uint flags);
-}

src/SharpEmu.GUI/packages.lock.json

@@ -1,189 +0,0 @@
-{
-  "version": 2,
-  "dependencies": {
-    "net10.0": {
-      "Avalonia": {
-        "type": "Direct",
-        "requested": "[11.3.18, )",
-        "resolved": "11.3.18",
-        "contentHash": "2C4UxhWUObWGgYKWic1x5BMMWGJP6SElb91WeOxs+X/iR26rtkqpxFFwwo50FXS9AyYnHfk8QKXDEfe7oT/kZA==",
-        "dependencies": {
-          "Avalonia.BuildServices": "11.3.2",
-          "Avalonia.Remote.Protocol": "11.3.18",
-          "MicroCom.Runtime": "0.11.0"
-        }
-      },
-      "Avalonia.Desktop": {
-        "type": "Direct",
-        "requested": "[11.3.18, )",
-        "resolved": "11.3.18",
-        "contentHash": "bilMPa5vYiis6fbNovb6esKytBnOCEGojBa1XFegLCRHCP6g6PvZwS0XF/YOAGkENRlHG8dI7lohOpQ9bIkq1g==",
-        "dependencies": {
-          "Avalonia": "11.3.18",
-          "Avalonia.Native": "11.3.18",
-          "Avalonia.Skia": "11.3.18",
-          "Avalonia.Win32": "11.3.18",
-          "Avalonia.X11": "11.3.18"
-        }
-      },
-      "Avalonia.Fonts.Inter": {
-        "type": "Direct",
-        "requested": "[11.3.18, )",
-        "resolved": "11.3.18",
-        "contentHash": "27u6hB3Y2Ue586yjfeVakberY73VNQXtuKwe/P927XG1QPlhsfmOyifLHDDpSHG85Zl1x/Xv9IZ3+tk9FnjcZQ==",
-        "dependencies": {
-          "Avalonia": "11.3.18"
-        }
-      },
-      "Avalonia.Themes.Fluent": {
-        "type": "Direct",
-        "requested": "[11.3.18, )",
-        "resolved": "11.3.18",
-        "contentHash": "+Q/TJoynD0zNuu5w2gD+xcTl7GNKJFxlPYAndRLs/mTDrNbbsvv/271WyIysbMPsXSjCyBDp7RCZzQkpD6x5Bg==",
-        "dependencies": {
-          "Avalonia": "11.3.18"
-        }
-      },
-      "Tmds.DBus.Protocol": {
-        "type": "Direct",
-        "requested": "[0.21.3, )",
-        "resolved": "0.21.3",
-        "contentHash": "hDwB8WsQoyALQKqIbwzS68UKdlnafDm4T/DkO/JrA/YIneP/rKv96SxYPVXeh3FP4i/SXfShrYftKLtciJAIlw=="
-      },
-      "Avalonia.Angle.Windows.Natives": {
-        "type": "Transitive",
-        "resolved": "2.1.25547.20250602",
-        "contentHash": "ZL0VLc4s9rvNNFt19Pxm5UNAkmKNylugAwJPX9ulXZ6JWs/l6XZihPWWTyezaoNOVyEPU8YbURtW7XMAtqXH5A=="
-      },
-      "Avalonia.BuildServices": {
-        "type": "Transitive",
-        "resolved": "11.3.2",
-        "contentHash": "qHDToxto1e3hci5YqbG9n0Ty8mlp3zBUN5wT66wKqaDVzXyQ0do3EnRILd4Ke9jpvsktaPpgE0YjEk7hornryQ=="
-      },
-      "Avalonia.FreeDesktop": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "aUwv8BNruRUOaUfMu4U3uibIUS60/rSHgGOhd8zBkLkpxY3JFJvgRbeq5ZzHIyKXCuKi18PO00YHAgCarp3wdw==",
-        "dependencies": {
-          "Avalonia": "11.3.18",
-          "Tmds.DBus.Protocol": "0.21.3"
-        }
-      },
-      "Avalonia.Native": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "8g53DROFW6wVJAnTsE1Iu5bdZO5r0oqxbdbMQODs1QDYCK2IU/y/x/vQVKCYOvqxl4tXkzU9tExv8XqSGPWthQ==",
-        "dependencies": {
-          "Avalonia": "11.3.18"
-        }
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-      "Avalonia.Remote.Protocol": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
-        "contentHash": "vw+6ZfgTuu72dA9aVWn6u56t2nrBd5MoMU0wo/qI9XJAl/c0oYYphIvwLvJP1JorubQY4UE3d0ac8ULBhrGBiA=="
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-      "Avalonia.Skia": {
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-        "dependencies": {
-          "Avalonia": "11.3.18",
-          "HarfBuzzSharp": "8.3.1.1",
-          "HarfBuzzSharp.NativeAssets.Linux": "8.3.1.1",
-          "HarfBuzzSharp.NativeAssets.WebAssembly": "8.3.1.1",
-          "SkiaSharp": "2.88.9",
-          "SkiaSharp.NativeAssets.Linux": "2.88.9",
-          "SkiaSharp.NativeAssets.WebAssembly": "2.88.9"
-        }
-      },
-      "Avalonia.Win32": {
-        "type": "Transitive",
-        "resolved": "11.3.18",
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-          "Avalonia.Angle.Windows.Natives": "2.1.25547.20250602"
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-          "Avalonia": "11.3.18",
-          "Avalonia.FreeDesktop": "11.3.18",
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-      "HarfBuzzSharp": {
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-        "resolved": "8.3.1.1",
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-          "HarfBuzzSharp.NativeAssets.Win32": "8.3.1.1",
-          "HarfBuzzSharp.NativeAssets.macOS": "8.3.1.1"
-        }
-      },
-      "HarfBuzzSharp.NativeAssets.Linux": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "3EZ1mpIiKWRLL5hUYA82ZHteeDIVaEA/Z0rA/wU6tjx6crcAkJnBPwDXZugBSfo8+J3EznvRJf49uMsqYfKrHg=="
-      },
-      "HarfBuzzSharp.NativeAssets.macOS": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "jbtCsgftcaFLCA13tVKo5iWdElJScrulLTKJre36O4YQTIlwDtPPqhRZNk+Y0vv4D1gxbscasGRucUDfS44ofQ=="
-      },
-      "HarfBuzzSharp.NativeAssets.WebAssembly": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "loJweK2u/mH/3C2zBa0ggJlITIszOkK64HLAZB7FUT670dTg965whLFYHDQo69NmC4+d9UN0icLC9VHidXaVCA=="
-      },
-      "HarfBuzzSharp.NativeAssets.Win32": {
-        "type": "Transitive",
-        "resolved": "8.3.1.1",
-        "contentHash": "UsJtQsfAJoFDZrXc4hCUfRPMqccfKZ0iumJ/upcUjz/cmsTgVFGNEL5yaJWmkqsuFYdMWbj/En5/kS4PFl9hBA=="
-      },
-      "MicroCom.Runtime": {
-        "type": "Transitive",
-        "resolved": "0.11.0",
-        "contentHash": "MEnrZ3UIiH40hjzMDsxrTyi8dtqB5ziv3iBeeU4bXsL/7NLSal9F1lZKpK+tfBRnUoDSdtcW3KufE4yhATOMCA=="
-      },
-      "SkiaSharp": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "3MD5VHjXXieSHCleRLuaTXmL2pD0mB7CcOB1x2kA1I4bhptf4e3R27iM93264ZYuAq6mkUyX5XbcxnZvMJYc1Q==",
-        "dependencies": {
-          "SkiaSharp.NativeAssets.Win32": "2.88.9",
-          "SkiaSharp.NativeAssets.macOS": "2.88.9"
-        }
-      },
-      "SkiaSharp.NativeAssets.Linux": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "cWSaJKVPWAaT/WIn9c8T5uT/l4ETwHxNJTkEOtNKjphNo8AW6TF9O32aRkxqw3l8GUdUo66Bu7EiqtFh/XG0Zg==",
-        "dependencies": {
-          "SkiaSharp": "2.88.9"
-        }
-      },
-      "SkiaSharp.NativeAssets.macOS": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "Nv5spmKc4505Ep7oUoJ5vp3KweFpeNqxpyGDWyeEPTX2uR6S6syXIm3gj75dM0YJz7NPvcix48mR5laqs8dPuA=="
-      },
-      "SkiaSharp.NativeAssets.WebAssembly": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "kt06RccBHSnAs2wDYdBSfsjIDbY3EpsOVqnlDgKdgvyuRA8ZFDaHRdWNx1VHjGgYzmnFCGiTJBnXFl5BqGwGnA=="
-      },
-      "SkiaSharp.NativeAssets.Win32": {
-        "type": "Transitive",
-        "resolved": "2.88.9",
-        "contentHash": "wb2kYgU7iy84nQLYZwMeJXixvK++GoIuECjU4ECaUKNuflyRlJKyiRhN1MAHswvlvzuvkrjRWlK0Za6+kYQK7w=="
-      },
-      "sharpemu.logging": {
-        "type": "Project"
-      }
-    }
-  }
-}

src/SharpEmu.HLE/Aerolib/Aerolib.cs

@@ -3,13 +3,11 @@
 
 using System.Buffers.Binary;
 using System.Linq;
-using SharpEmu.Logging;
 
 namespace SharpEmu.HLE;
 
 public sealed class Aerolib : ISymbolCatalog
 {
-    private static readonly SharpEmuLogger Log = SharpEmuLog.For("Aerolib");
     private static readonly Lazy<Aerolib> _instance = new(() => new Aerolib());
     private static readonly Aerolib EmptyCatalog = new Aerolib(empty: true);
 
@@ -110,14 +108,14 @@ public sealed class Aerolib : ISymbolCatalog
 
             if (resourceName == null)
             {
-                Log.Error("Embedded resource 'aerolib.bin' not found");
+                Console.Error.WriteLine("[AEROLIB] Embedded resource 'aerolib.bin' not found");
                 return;
             }
 
             using var stream = assembly.GetManifestResourceStream(resourceName);
             if (stream == null)
             {
-                Log.Error("Failed to open embedded resource stream");
+                Console.Error.WriteLine("[AEROLIB] Failed to open embedded resource stream");
                 return;
             }
 
@@ -147,11 +145,11 @@ public sealed class Aerolib : ISymbolCatalog
                 _byExportName[name] = symbol;
             }
 
-            Log.Info($"Loaded {_byNid.Count} NID entries from binary resource");
+            Console.Error.WriteLine($"[AEROLIB] Loaded {_byNid.Count} NID entries from binary resource");
         }
         catch (Exception ex)
         {
-            Log.Error($"Failed to load embedded aerolib.bin: {ex.Message}", ex);
+            Console.Error.WriteLine($"[AEROLIB] Failed to load embedded aerolib.bin: {ex.Message}");
         }
     }
 

src/SharpEmu.HLE/CpuContext.cs

@@ -2,20 +2,25 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 using System.Buffers.Binary;
-using System.Text;
 
 namespace SharpEmu.HLE;
 
-public sealed class CpuContext(ICpuMemory memory, Generation generation)
+public sealed class CpuContext
 {
     private readonly ulong[] _registers = new ulong[16];
     private readonly ulong[] _xmmRegisters = new ulong[32];
     private readonly ulong[] _ymmUpperRegisters = new ulong[32];
     private bool _raxWritten;
 
-    public ICpuMemory Memory { get; } = memory ?? throw new ArgumentNullException(nameof(memory));
+    public CpuContext(ICpuMemory memory, Generation generation)
+    {
+        Memory = memory ?? throw new ArgumentNullException(nameof(memory));
+        TargetGeneration = generation;
+    }
 
-    public Generation TargetGeneration { get; } = generation;
+    public ICpuMemory Memory { get; }
+
+    public Generation TargetGeneration { get; }
 
     public ulong Rip { get; set; }
 
@@ -125,91 +130,6 @@ public sealed class CpuContext(ICpuMemory memory, Generation generation)
         SetYmmUpper(registerIndex, highLow, highHigh);
     }
 
-    public bool TryReadByte(ulong address, out byte value)
-    {
-        Span<byte> buffer = stackalloc byte[1];
-        if (!Memory.TryRead(address, buffer))
-        {
-            value = 0;
-            return false;
-        }
-
-        value = buffer[0];
-        return true;
-    }
-
-    public bool TryReadUInt16(ulong address, out ushort value)
-    {
-        Span<byte> bytes = stackalloc byte[sizeof(ushort)];
-        if (!Memory.TryRead(address, bytes))
-        {
-            value = 0;
-            return false;
-        }
-
-        value = BinaryPrimitives.ReadUInt16LittleEndian(bytes);
-        return true;
-    }
-
-    public bool TryWriteUInt16(ulong address, ushort value)
-    {
-        Span<byte> buffer = stackalloc byte[sizeof(ushort)];
-        BinaryPrimitives.WriteUInt16LittleEndian(buffer, value);
-        return Memory.TryWrite(address, buffer);
-    }
-
-    public bool TryReadInt32(ulong address, out int value)
-    {
-        Span<byte> bytes = stackalloc byte[sizeof(int)];
-        if (!Memory.TryRead(address, bytes))
-        {
-            value = 0;
-            return false;
-        }
-
-        value = BinaryPrimitives.ReadInt32LittleEndian(bytes);
-        return true;
-    }
-
-    public bool TryWriteInt32(ulong address, int value, bool checkNil = false)
-    {
-        if (checkNil && address == 0)
-        {
-            return false;
-        }
-
-        Span<byte> bytes = stackalloc byte[sizeof(int)];
-        BinaryPrimitives.WriteInt32LittleEndian(bytes, value);
-        return Memory.TryWrite(address, bytes);
-    }
-
-    public bool TryReadUInt32(ulong address, out uint value)
-    {
-        Span<byte> buffer = stackalloc byte[sizeof(uint)];
-        if (!Memory.TryRead(address, buffer))
-        {
-            value = 0;
-            return false;
-        }
-
-        value = BinaryPrimitives.ReadUInt32LittleEndian(buffer);
-        return true;
-    }
-
-    public bool TryWriteUInt32(ulong address, uint value)
-    {
-        Span<byte> buffer = stackalloc byte[sizeof(uint)];
-        BinaryPrimitives.WriteUInt32LittleEndian(buffer, value);
-        return Memory.TryWrite(address, buffer);
-    }
-
-    public bool TryWriteInt64(ulong address, long value)
-    {
-        Span<byte> buffer = stackalloc byte[sizeof(long)];
-        BinaryPrimitives.WriteInt64LittleEndian(buffer, value);
-        return Memory.TryWrite(address, buffer);
-    }
-
     public bool TryReadUInt64(ulong address, out ulong value)
     {
         Span<byte> buffer = stackalloc byte[sizeof(ulong)];
@@ -230,33 +150,6 @@ public sealed class CpuContext(ICpuMemory memory, Generation generation)
         return Memory.TryWrite(address, buffer);
     }
 
-    public bool TryReadNullTerminatedUtf8(ulong address, int capacity, out string value)
-    {
-        value = string.Empty;
-        if (address == 0 || capacity <= 0)
-        {
-            return false;
-        }
-
-        var bytes = new byte[capacity];
-        for (var index = 0; index < bytes.Length; index++)
-        {
-            if (!Memory.TryRead(address + (ulong)index, bytes.AsSpan(index, 1)))
-            {
-                return false;
-            }
-
-            if (bytes[index] == 0)
-            {
-                value = Encoding.UTF8.GetString(bytes, 0, index);
-                return true;
-            }
-        }
-
-        value = Encoding.UTF8.GetString(bytes);
-        return true;
-    }
-
     public bool PushUInt64(ulong value)
     {
         var rsp = this[CpuRegister.Rsp];
@@ -276,23 +169,4 @@ public sealed class CpuContext(ICpuMemory memory, Generation generation)
         this[CpuRegister.Rsp] = rsp + sizeof(ulong);
         return true;
     }
-
-    public int SetReturn(int result, Type? cast = null)
-    {
-        var value = cast switch
-        {
-            null => (ulong)result,
-            _ when cast == typeof(long) => (ulong)(long)result,
-            _ => throw new NotSupportedException(),
-        };
-
-        this[CpuRegister.Rax] = unchecked(value);
-        return result;
-    }
-
-    public int SetReturn(OrbisGen2Result result)
-    {
-        this[CpuRegister.Rax] = unchecked((ulong)(int)result);
-        return (int)result;
-    }
 }

src/SharpEmu.HLE/ModuleManager.cs

@@ -3,14 +3,11 @@
 
 using System.Collections.Concurrent;
 using System.Reflection;
-using SharpEmu.Logging;
 
 namespace SharpEmu.HLE;
 
 public sealed class ModuleManager : IModuleManager
 {
-    private static readonly SharpEmuLogger Log = SharpEmuLog.For("HLE");
-
     private readonly ConcurrentDictionary<string, Delegate> _dispatchTable = new(StringComparer.Ordinal);
     private readonly ConcurrentDictionary<string, ExportedFunction> _exportTable = new(StringComparer.Ordinal);
     private readonly ConcurrentDictionary<string, ExportedFunction> _exportNameTable = new(StringComparer.Ordinal);
@@ -50,7 +47,6 @@ public sealed class ModuleManager : IModuleManager
                     var handler = CreateHandler(type, method, instances);
                     if (!_dispatchTable.TryAdd(exportInfo.Value.Nid, handler))
                     {
-                        Log.Warning($"Duplicate NID '{exportInfo.Value.Nid}' ({exportInfo.Value.ExportName}) — already registered, skipping.");
                         continue;
                     }
 
@@ -109,7 +105,6 @@ public sealed class ModuleManager : IModuleManager
 
         if (!_dispatchTable.TryGetValue(nid, out var function) || !_exportTable.TryGetValue(nid, out var export))
         {
-            Log.Warning($"NID '{nid}' not found in dispatch table.");
             context[CpuRegister.Rax] = unchecked((ulong)(int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
             result = OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
             return false;
@@ -117,13 +112,11 @@ public sealed class ModuleManager : IModuleManager
 
         if ((export.Target & context.TargetGeneration) == 0)
         {
-            Log.Warning($"NID '{nid}' ({export.Name}) found but not implemented for generation {context.TargetGeneration} (targets: {export.Target}).");
+            context[CpuRegister.Rax] = unchecked((ulong)(int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
-            context[CpuRegister.Rax] = unchecked((ulong)(int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_IMPLEMENTED);
+            result = OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
-            result = OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_IMPLEMENTED;
             return false;
         }
 
-
         context.ClearRaxWriteFlag();
         int ret = ((SysAbiFunction)function).Invoke(context);
 

src/SharpEmu.HLE/OrbisGen2Result.cs

@@ -40,13 +40,6 @@ public enum OrbisGen2Result : int
     /// </summary>
     ORBIS_GEN2_ERROR_DEADLOCK = unchecked((int)0x8002000B),
 
-    /// <summary>
-    /// Indicates that the waited-on object was deleted while the caller was
-    /// blocked on it. Matches the SCE kernel EACCES code that waiters of a
-    /// deleted semaphore observe.
-    /// </summary>
-    ORBIS_GEN2_ERROR_DELETED = unchecked((int)0x8002000D),
-
     /// <summary>
     /// Indicates that the target resource is busy.
     /// </summary>
@@ -57,13 +50,6 @@ public enum OrbisGen2Result : int
     /// </summary>
     ORBIS_GEN2_ERROR_TRY_AGAIN = unchecked((int)0x80020023),
 
-    /// <summary>
-    /// Indicates that a blocked wait was canceled (e.g. sceKernelCancelSema).
-    /// Matches the SCE kernel ECANCELED code that canceled semaphore waiters
-    /// observe.
-    /// </summary>
-    ORBIS_GEN2_ERROR_CANCELED = unchecked((int)0x80020055),
-
     /// <summary>
     /// Indicates that behavior is recognized but not implemented yet.
     /// </summary>

src/SharpEmu.HLE/SharpEmu.HLE.csproj

@@ -8,14 +8,6 @@ SPDX-License-Identifier: GPL-2.0-or-later
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
-  <PropertyGroup>
-    <NoWarn>$(NoWarn);1591</NoWarn>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\SharpEmu.Logging\SharpEmu.Logging.csproj" />
-  </ItemGroup>
-
   <ItemGroup>
     <EmbeddedResource Include="Aerolib\aerolib.bin" />
   </ItemGroup>

src/SharpEmu.HLE/packages.lock.json

@@ -1,10 +1,6 @@
 {
   "version": 2,
   "dependencies": {
-    "net10.0": {
+    "net10.0": {}
-      "sharpemu.logging": {
-        "type": "Project"
-      }
-    }
   }
 }

src/SharpEmu.Libs/Agc/Gen5ShaderMetadataReader.cs

@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 using SharpEmu.HLE;
+using System.Buffers.Binary;
 
 namespace SharpEmu.Libs.Agc;
 
@@ -17,9 +18,9 @@ internal static class Gen5ShaderMetadataReader
         out Gen5ShaderMetadata metadata)
     {
         metadata = default!;
-        if (!ctx.TryReadUInt64(shaderHeaderAddress + ShaderUserDataOffset, out var userDataAddress) ||
+        if (!TryReadUInt64(ctx, shaderHeaderAddress + ShaderUserDataOffset, out var userDataAddress) ||
             userDataAddress == 0 ||
-            !ctx.TryReadUInt64(userDataAddress, out var directResourceOffsetsAddress))
+            !TryReadUInt64(ctx, userDataAddress, out var directResourceOffsetsAddress))
         {
             return false;
         }
@@ -27,7 +28,8 @@ internal static class Gen5ShaderMetadataReader
         var resourceOffsets = new ulong[ResourceClassCount];
         for (var resourceClass = 0; resourceClass < ResourceClassCount; resourceClass++)
         {
-            if (!ctx.TryReadUInt64(
+            if (!TryReadUInt64(
+                    ctx,
                     userDataAddress + 0x08 + (ulong)(resourceClass * sizeof(ulong)),
                     out resourceOffsets[resourceClass]))
             {
@@ -35,9 +37,9 @@ internal static class Gen5ShaderMetadataReader
             }
         }
 
-        if (!ctx.TryReadUInt16(userDataAddress + 0x28, out var extendedUserDataSize) ||
+        if (!TryReadUInt16(ctx, userDataAddress + 0x28, out var extendedUserDataSize) ||
-            !ctx.TryReadUInt16(userDataAddress + 0x2A, out var shaderResourceTableSize) ||
+            !TryReadUInt16(ctx, userDataAddress + 0x2A, out var shaderResourceTableSize) ||
-            !ctx.TryReadUInt16(userDataAddress + 0x2C, out var directResourceCount) ||
+            !TryReadUInt16(ctx, userDataAddress + 0x2C, out var directResourceCount) ||
             directResourceCount > MaxMetadataEntries)
         {
             return false;
@@ -46,7 +48,8 @@ internal static class Gen5ShaderMetadataReader
         var resourceCounts = new ushort[ResourceClassCount];
         for (var resourceClass = 0; resourceClass < ResourceClassCount; resourceClass++)
         {
-            if (!ctx.TryReadUInt16(
+            if (!TryReadUInt16(
+                    ctx,
                     userDataAddress + 0x2E + (ulong)(resourceClass * sizeof(ushort)),
                     out resourceCounts[resourceClass]) ||
                 resourceCounts[resourceClass] > MaxMetadataEntries)
@@ -65,7 +68,7 @@ internal static class Gen5ShaderMetadataReader
 
             for (uint type = 0; type < directResourceCount; type++)
             {
-                if (!ctx.TryReadUInt16(directResourceOffsetsAddress + type * sizeof(ushort), out var offset))
+                if (!TryReadUInt16(ctx, directResourceOffsetsAddress + type * sizeof(ushort), out var offset))
                 {
                     return false;
                 }
@@ -93,7 +96,8 @@ internal static class Gen5ShaderMetadataReader
 
             for (uint slot = 0; slot < count; slot++)
             {
-                if (!ctx.TryReadUInt16(
+                if (!TryReadUInt16(
+                        ctx,
                         resourceOffsets[resourceClass] + slot * sizeof(ushort),
                         out var sharp))
                 {
@@ -121,4 +125,30 @@ internal static class Gen5ShaderMetadataReader
             resources);
         return true;
     }
+
+    private static bool TryReadUInt16(CpuContext ctx, ulong address, out ushort value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(ushort)];
+        if (!ctx.Memory.TryRead(address, bytes))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt16LittleEndian(bytes);
+        return true;
+    }
+
+    private static bool TryReadUInt64(CpuContext ctx, ulong address, out ulong value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(ulong)];
+        if (!ctx.Memory.TryRead(address, bytes))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt64LittleEndian(bytes);
+        return true;
+    }
 }

src/SharpEmu.Libs/Agc/Gen5ShaderScalarEvaluator.cs

@@ -3,6 +3,7 @@
 
 using SharpEmu.HLE;
 using SharpEmu.Libs.Kernel;
+using System.Buffers.Binary;
 using System.Numerics;
 
 namespace SharpEmu.Libs.Agc;
@@ -1404,7 +1405,8 @@ internal static class Gen5ShaderScalarEvaluator
                 continue;
             }
 
-            if (!ctx.TryReadUInt32(
+            if (!TryReadUInt32(
+                    ctx,
                     address + (ulong)(index * sizeof(uint)),
                     out var value) &&
                 !TryReadUserDataScalarLoad(
@@ -1725,4 +1727,16 @@ internal static class Gen5ShaderScalarEvaluator
         opcode.StartsWith("ImageSample", StringComparison.Ordinal) ||
         opcode.StartsWith("ImageGather", StringComparison.Ordinal);
 
+    private static bool TryReadUInt32(CpuContext ctx, ulong address, out uint value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(uint)];
+        if (!ctx.Memory.TryRead(address, bytes))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt32LittleEndian(bytes);
+        return true;
+    }
 }

src/SharpEmu.Libs/Agc/Gen5ShaderTranslator.cs

@@ -4,7 +4,6 @@
 using SharpEmu.HLE;
 using SharpEmu.Libs.VideoOut;
 using System.Buffers.Binary;
-using System.Runtime.CompilerServices;
 using System.Text;
 
 namespace SharpEmu.Libs.Agc;
@@ -14,14 +13,6 @@ internal static class Gen5ShaderTranslator
     private const int MaxInstructions = 4096;
     private const int MinimumUserDataDwords = 16;
     private const int MaximumUserDataDwords = 256;
-    private static readonly ConditionalWeakTable<object, ShaderDecodeCache> _decodeCaches = new();
-
-    private sealed class ShaderDecodeCache
-    {
-        public object Gate { get; } = new();
-        public Dictionary<ulong, Gen5ShaderProgram> Programs { get; } = new();
-        public Dictionary<ulong, Gen5ShaderMetadata?> Metadata { get; } = new();
-    }
 
     private static readonly uint[] FullscreenBarycentricEs =
     [
@@ -126,51 +117,16 @@ internal static class Gen5ShaderTranslator
         uint userDataScalarRegisterBase = 0)
     {
         state = default!;
-        error = string.Empty;
+        if (!TryDecodeProgram(ctx, shaderAddress, out var program, out error))
-        var cache = _decodeCaches.GetValue(ctx.Memory, static _ => new ShaderDecodeCache());
-        Gen5ShaderProgram? program;
-        lock (cache.Gate)
         {
-            cache.Programs.TryGetValue(shaderAddress, out program);
+            return false;
-        }
-
-        if (program is null)
-        {
-            if (!TryDecodeProgram(ctx, shaderAddress, out program, out error))
-            {
-                return false;
-            }
-
-            lock (cache.Gate)
-            {
-                cache.Programs.TryAdd(shaderAddress, program);
-            }
         }
 
         Gen5ShaderMetadata? metadata = null;
-        if (shaderHeaderAddress != 0)
+        if (shaderHeaderAddress != 0 &&
+            Gen5ShaderMetadataReader.TryRead(ctx, shaderHeaderAddress, out var decodedMetadata))
         {
-            var metadataCached = false;
+            metadata = decodedMetadata;
-            lock (cache.Gate)
-            {
-                metadataCached = cache.Metadata.TryGetValue(shaderHeaderAddress, out metadata);
-            }
-
-            if (!metadataCached)
-            {
-                if (Gen5ShaderMetadataReader.TryRead(
-                        ctx,
-                        shaderHeaderAddress,
-                        out var decodedMetadata))
-                {
-                    metadata = decodedMetadata;
-                }
-
-                lock (cache.Gate)
-                {
-                    cache.Metadata.TryAdd(shaderHeaderAddress, metadata);
-                }
-            }
         }
 
         var userData = new uint[GetUserDataDwordCount(metadata)];
@@ -294,7 +250,7 @@ internal static class Gen5ShaderTranslator
         var instructionCount = 0;
         for (uint pc = 0; instructionCount < MaxInstructions;)
         {
-            if (!ctx.TryReadUInt32(address + pc, out var word))
+            if (!TryReadUInt32(ctx, address + pc, out var word))
             {
                 error = $"read-failed pc=0x{pc:X}";
                 return false;
@@ -317,7 +273,7 @@ internal static class Gen5ShaderTranslator
             words[0] = word;
             for (uint wordIndex = 1; wordIndex < sizeDwords; wordIndex++)
             {
-                if (!ctx.TryReadUInt32(address + pc + wordIndex * sizeof(uint), out words[wordIndex]))
+                if (!TryReadUInt32(ctx, address + pc + wordIndex * sizeof(uint), out words[wordIndex]))
                 {
                     error = $"read-failed pc=0x{pc + wordIndex * sizeof(uint):X}";
                     return false;
@@ -397,7 +353,7 @@ internal static class Gen5ShaderTranslator
             case 0x34:
             case 0x35:
                 encoding = Gen5ShaderEncoding.Vop3;
-                if (!ctx.TryReadUInt32(baseAddress + pc + sizeof(uint), out var vop3Extra))
+                if (!TryReadUInt32(ctx, baseAddress + pc + sizeof(uint), out var vop3Extra))
                 {
                     error = $"vop3-extra-read-failed pc=0x{pc:X}";
                     return false;
@@ -418,7 +374,7 @@ internal static class Gen5ShaderTranslator
                 return DecodeFlat(word, out name, out sizeDwords, out error);
             case 0x38:
                 encoding = Gen5ShaderEncoding.Mubuf;
-                if (!ctx.TryReadUInt32(baseAddress + pc + sizeof(uint), out var mubufExtra))
+                if (!TryReadUInt32(ctx, baseAddress + pc + sizeof(uint), out var mubufExtra))
                 {
                     error = $"mubuf-extra-read-failed pc=0x{pc:X}";
                     return false;
@@ -427,7 +383,7 @@ internal static class Gen5ShaderTranslator
                 return DecodeMubuf(word, mubufExtra, out name, out sizeDwords, out error);
             case 0x3A:
                 encoding = Gen5ShaderEncoding.Mtbuf;
-                if (!ctx.TryReadUInt32(baseAddress + pc + sizeof(uint), out var mtbufExtra))
+                if (!TryReadUInt32(ctx, baseAddress + pc + sizeof(uint), out var mtbufExtra))
                 {
                     error = $"mtbuf-extra-read-failed pc=0x{pc:X}";
                     return false;
@@ -1741,6 +1697,19 @@ internal static class Gen5ShaderTranslator
         counts[key] = count + 1;
     }
 
+    private static bool TryReadUInt32(CpuContext ctx, ulong address, out uint value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(uint)];
+        if (!ctx.Memory.TryRead(address, bytes))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt32LittleEndian(bytes);
+        return true;
+    }
+
     private readonly record struct ShaderDecodeInfo(
         int InstructionCount,
         Dictionary<string, int> Counts,

src/SharpEmu.Libs/Agc/Gen5SpirvTranslator.cs

@@ -467,6 +467,9 @@ internal static partial class Gen5SpirvTranslator
                 _imageBindingByPc.TryAdd(binding.Pc, index);
                 var isStorage =
                     Gen5ShaderTranslator.IsStorageImageOperation(binding.Opcode);
+                var isDepth =
+                    binding.Opcode.Contains("SampleC", StringComparison.Ordinal) ||
+                    binding.Opcode.Contains("Gather4C", StringComparison.Ordinal);
                 var (format, componentKind) =
                     DecodeImageFormat(binding.ResourceDescriptor);
                 var componentType = componentKind switch
@@ -491,7 +494,7 @@ internal static partial class Gen5SpirvTranslator
                 var imageType = _module.TypeImage(
                     componentType,
                     SpirvImageDim.Dim2D,
-                    depth: false,
+                    depth: isDepth,
                     arrayed: false,
                     multisampled: false,
                     sampled: isStorage ? 2u : 1u,
@@ -1658,14 +1661,18 @@ internal static partial class Gen5SpirvTranslator
                 var offset = hasOffset ? BuildImageOffset(image, 0) : 0u;
                 var imageOperands =
                     (explicitLod ? 2u : 0u) | (hasOffset ? 0x10u : 0u);
-                var reference = hasCompare
-                    ? Bitcast(_floatType, LoadV(image.GetAddressRegister(hasOffset ? 1 : 0)))
-                    : 0u;
                 var operands = new List<uint>
                 {
                     imageObject,
                     coordinates,
                 };
+                if (hasCompare)
+                {
+                    operands.Add(
+                        Bitcast(
+                            _floatType,
+                            LoadV(image.GetAddressRegister(hasOffset ? 1 : 0))));
+                }
 
                 if (imageOperands != 0)
                 {
@@ -1682,14 +1689,29 @@ internal static partial class Gen5SpirvTranslator
                 }
 
                 sampled = _module.AddInstruction(
-                    explicitLod
+                    hasCompare
-                        ? SpirvOp.ImageSampleExplicitLod
+                        ? explicitLod
-                        : SpirvOp.ImageSampleImplicitLod,
+                            ? SpirvOp.ImageSampleDrefExplicitLod
-                    resource.VectorType,
+                            : SpirvOp.ImageSampleDrefImplicitLod
+                        : explicitLod
+                            ? SpirvOp.ImageSampleExplicitLod
+                            : SpirvOp.ImageSampleImplicitLod,
+                    hasCompare ? resource.ComponentType : resource.VectorType,
                     [.. operands]);
                 if (hasCompare)
                 {
-                    sampled = EmitManualDepthCompare(resource, sampled, reference);
+                    var scalar = sampled;
+                    sampled = _module.AddInstruction(
+                        SpirvOp.CompositeConstruct,
+                        resource.VectorType,
+                        scalar,
+                        scalar,
+                        scalar,
+                        resource.ComponentKind == ImageComponentKind.Float
+                            ? Float(1)
+                            : resource.ComponentKind == ImageComponentKind.Uint
+                                ? UInt(1)
+                                : _module.Constant(_intType, 1));
                 }
             }
             else if (instruction.Opcode.StartsWith(
@@ -1703,9 +1725,6 @@ internal static partial class Gen5SpirvTranslator
                 var start = (hasOffset ? 1 : 0) + (hasCompare ? 1 : 0);
                 var coordinates = BuildFloatCoordinates(image, start);
                 var offset = hasOffset ? BuildImageOffset(image, 0) : 0u;
-                var reference = hasCompare
-                    ? Bitcast(_floatType, LoadV(image.GetAddressRegister(hasOffset ? 1 : 0)))
-                    : 0u;
                 var operands = new List<uint>
                 {
                     imageObject,
@@ -1713,7 +1732,10 @@ internal static partial class Gen5SpirvTranslator
                 };
                 if (hasCompare)
                 {
-                    operands.Add(UInt(0));
+                    operands.Add(
+                        Bitcast(
+                            _floatType,
+                            LoadV(image.GetAddressRegister(hasOffset ? 1 : 0))));
                 }
                 else
                 {
@@ -1734,28 +1756,11 @@ internal static partial class Gen5SpirvTranslator
                 }
 
                 sampled = _module.AddInstruction(
-                    SpirvOp.ImageGather,
+                    hasCompare
+                        ? SpirvOp.ImageDrefGather
+                        : SpirvOp.ImageGather,
                     resource.VectorType,
                     [.. operands]);
-                if (hasCompare)
-                {
-                    var compared = new uint[4];
-                    for (var component = 0u; component < 4; component++)
-                    {
-                        var texel = _module.AddInstruction(
-                            SpirvOp.CompositeExtract,
-                            resource.ComponentType,
-                            sampled,
-                            component);
-                        compared[component] = EmitDepthCompareScalar(resource, texel, reference);
-                    }
-
-                    sampled = _module.AddInstruction(
-                        SpirvOp.CompositeConstruct,
-                        resource.VectorType,
-                        compared);
-                }
-
                 writeAllComponents = true;
             }
             else
@@ -1789,67 +1794,6 @@ internal static partial class Gen5SpirvTranslator
             return true;
         }
 
-        private uint EmitDepthCompareScalar(
-            SpirvImageResource resource,
-            uint texel,
-            uint reference)
-        {
-            var texelAsFloat = resource.ComponentKind switch
-            {
-                ImageComponentKind.Uint => _module.AddInstruction(
-                    SpirvOp.ConvertUToF, _floatType, texel),
-                ImageComponentKind.Sint => _module.AddInstruction(
-                    SpirvOp.ConvertSToF, _floatType, texel),
-                _ => texel,
-            };
-            var passes = _module.AddInstruction(
-                SpirvOp.FOrdLessThanEqual,
-                _boolType,
-                reference,
-                texelAsFloat);
-            return _module.AddInstruction(
-                SpirvOp.Select,
-                resource.ComponentType,
-                passes,
-                resource.ComponentKind switch
-                {
-                    ImageComponentKind.Uint => UInt(1),
-                    ImageComponentKind.Sint => _module.Constant(_intType, 1),
-                    _ => Float(1),
-                },
-                resource.ComponentKind switch
-                {
-                    ImageComponentKind.Uint => UInt(0),
-                    ImageComponentKind.Sint => _module.Constant(_intType, 0),
-                    _ => Float(0),
-                });
-        }
-
-        private uint EmitManualDepthCompare(
-            SpirvImageResource resource,
-            uint sampledVector,
-            uint reference)
-        {
-            var texel = _module.AddInstruction(
-                SpirvOp.CompositeExtract,
-                resource.ComponentType,
-                sampledVector,
-                0u);
-            var scalar = EmitDepthCompareScalar(resource, texel, reference);
-            return _module.AddInstruction(
-                SpirvOp.CompositeConstruct,
-                resource.VectorType,
-                scalar,
-                scalar,
-                scalar,
-                resource.ComponentKind switch
-                {
-                    ImageComponentKind.Uint => UInt(1),
-                    ImageComponentKind.Sint => _module.Constant(_intType, 1),
-                    _ => Float(1),
-                });
-        }
-
         private uint BuildFloatCoordinates(Gen5ImageControl image, int start)
         {
             var x = Bitcast(

src/SharpEmu.Libs/Agc/GpuWaitRegistry.cs

@@ -1,102 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-namespace SharpEmu.Libs.Agc;
-
-// Holds DCBs whose parsing was suspended on an unsatisfied WAIT_REG_MEM condition.
-// AgcExports re-checks every waiter against guest memory on each submit and resumes
-// the ones whose condition became true (labels are advanced by ReleaseMem/WriteData/
-// DmaData packets or by direct CPU writes).
-internal static class GpuWaitRegistry
-{
-    public struct WaitingDcb
-    {
-        public ulong CommandBufferAddress;
-        public ulong ResumeAddress;
-        public uint TotalDwords;
-        public uint ResumeOffset;
-        public ulong WaitAddress;
-        public ulong ReferenceValue;
-        public ulong Mask;
-        public uint CompareFunction;
-        public bool Is64Bit;
-        public object? State;
-    }
-
-    private static readonly object _gate = new();
-    private static readonly Dictionary<ulong, List<WaitingDcb>> _waiters = new();
-
-    public static void Register(ulong address, WaitingDcb waiter)
-    {
-        waiter.WaitAddress = address;
-        lock (_gate)
-        {
-            if (!_waiters.TryGetValue(address, out var list))
-            {
-                list = new List<WaitingDcb>();
-                _waiters.Add(address, list);
-            }
-
-            list.Add(waiter);
-        }
-    }
-
-    // Re-evaluates every registered waiter. readValue receives (address, is64Bit) and
-    // returns null when the memory is unreadable; such waiters are kept registered.
-    public static List<WaitingDcb>? CollectSatisfied(Func<ulong, bool, ulong?> readValue)
-    {
-        List<WaitingDcb>? woken = null;
-        lock (_gate)
-        {
-            List<ulong>? emptied = null;
-            foreach (var (address, list) in _waiters)
-            {
-                for (var i = list.Count - 1; i >= 0; i--)
-                {
-                    var value = readValue(address, list[i].Is64Bit);
-                    if (value is null || !Compare(list[i], value.Value))
-                    {
-                        continue;
-                    }
-
-                    woken ??= new List<WaitingDcb>();
-                    woken.Add(list[i]);
-                    list.RemoveAt(i);
-                }
-
-                if (list.Count == 0)
-                {
-                    emptied ??= new List<ulong>();
-                    emptied.Add(address);
-                }
-            }
-
-            if (emptied != null)
-            {
-                foreach (var address in emptied)
-                {
-                    _waiters.Remove(address);
-                }
-            }
-        }
-
-        return woken;
-    }
-
-    public static bool Compare(in WaitingDcb waiter, ulong value)
-    {
-        var masked = value & waiter.Mask;
-        return waiter.CompareFunction switch
-        {
-            1 => masked < waiter.ReferenceValue,
-            2 => masked <= waiter.ReferenceValue,
-            3 => masked == waiter.ReferenceValue,
-            4 => masked != waiter.ReferenceValue,
-            5 => masked >= waiter.ReferenceValue,
-            6 => masked > waiter.ReferenceValue,
-            // 0 is "always" in the PM4 encoding and 7 is reserved; treating both as
-            // satisfied keeps a malformed packet from suspending its DCB forever.
-            _ => true,
-        };
-    }
-}

src/SharpEmu.Libs/Ampr/AmprExports.cs

@@ -24,7 +24,6 @@ public static class AmprExports
     private const uint KernelEventQueueRecordType = 2;
     private const uint WriteAddressRecordType = 3;
     private static readonly ConcurrentDictionary<ulong, CommandBufferState> _commandBuffers = new();
-    private static readonly ConcurrentDictionary<string, Lazy<CachedHostFile>> _hostFileCache = new(StringComparer.OrdinalIgnoreCase);
     private static readonly bool _traceAmpr =
         string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_AMPR"), "1", StringComparison.Ordinal);
     private static readonly bool _traceAmprReads =
@@ -38,23 +37,6 @@ public static class AmprExports
         public ulong WriteOffset;
     }
 
-    private sealed class CachedHostFile
-    {
-        public CachedHostFile(string path)
-        {
-            Stream = new FileStream(
-                path,
-                FileMode.Open,
-                FileAccess.Read,
-                FileShare.ReadWrite | FileShare.Delete,
-                bufferSize: 1024 * 1024,
-                FileOptions.RandomAccess);
-        }
-
-        public object Gate { get; } = new();
-        public FileStream Stream { get; }
-    }
-
     [SysAbiExport(
         Nid = "8aI7R7WaOlc",
         ExportName = "sceAmprCommandBufferConstructor",
@@ -267,53 +249,19 @@ public static class AmprExports
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
 
-        ulong bytesRead = 0;
-
-        // Unregistered/missing files are zero-filled instead of failing: games queue
-        // speculative reads and only consume the bytes on success paths.
         if (!AmprFileRegistry.TryGetHostPath(fileId, out var hostPath) || !File.Exists(hostPath))
         {
-            if (destination != 0 && size > 0)
+            TraceAmprRead(ctx, commandBuffer, fileId, destination, size, fileOffset, bytesRead: 0, hostPath, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
-            {
+            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
-                int chunkSize = (int)Math.Min(size, 4096);
-                Span<byte> zeros = stackalloc byte[chunkSize];
-                zeros.Clear();
-                while (bytesRead < size)
-                {
-                    int currentChunk = (int)Math.Min((ulong)chunkSize, size - bytesRead);
-                    if (!ctx.Memory.TryWrite(destination + bytesRead, zeros[..currentChunk]))
-                    {
-                        break;
-                    }
-
-                    bytesRead += (ulong)currentChunk;
-                }
-            }
-
-            TraceAmprRead(ctx, commandBuffer, fileId, destination, size, fileOffset, bytesRead, "(missing)", (int)OrbisGen2Result.ORBIS_GEN2_OK);
-            ctx[CpuRegister.Rax] = 0;
-            return (int)OrbisGen2Result.ORBIS_GEN2_OK;
         }
 
-        // Offset -1 means "continue after the previous read of this file id".
+        var result = TryReadFileToGuestMemory(ctx, hostPath, fileOffset, destination, size, out var bytesRead);
-        if (fileOffset == unchecked((ulong)(long)-1))
-        {
-            fileOffset = PakDirectoryTracker.ResolveSequentialOffset(fileId, size);
-        }
-        else if (fileOffset > long.MaxValue)
-        {
-            fileOffset = 0;
-        }
-
-        var result = TryReadFileToGuestMemory(ctx, hostPath, fileOffset, destination, size, out bytesRead);
         if (result != (int)OrbisGen2Result.ORBIS_GEN2_OK)
         {
             TraceAmprRead(ctx, commandBuffer, fileId, destination, size, fileOffset, bytesRead, hostPath, result);
             return result;
         }
 
-        PakDirectoryTracker.OnReadCompleted(ctx, fileId, destination, fileOffset, bytesRead);
-
         if (!AppendReadFileRecord(ctx, commandBuffer, fileId, destination, size, fileOffset, bytesRead))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
@@ -487,7 +435,7 @@ public static class AmprExports
         var offset = 0UL;
         while (offset < writeOffset)
         {
-            if (!ctx.TryReadUInt32(buffer + offset, out var recordType))
+            if (!TryReadUInt32(ctx, buffer + offset, out var recordType))
             {
                 return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
             }
@@ -686,43 +634,24 @@ public static class AmprExports
 
         try
         {
-            if (!TryGetCachedHostFile(hostPath, out var cachedFile, out var openResult))
+            using var stream = new FileStream(
-            {
+                hostPath,
-                return openResult;
+                FileMode.Open,
-            }
+                FileAccess.Read,
-
+                FileShare.ReadWrite | FileShare.Delete,
-            long fileLength;
+                ChunkSize,
-            lock (cachedFile.Gate)
+                FileOptions.SequentialScan);
-            {
+            if (fileOffset >= (ulong)stream.Length)
-                fileLength = cachedFile.Stream.Length;
-            }
-
-            if (fileOffset >= (ulong)fileLength)
             {
                 return (int)OrbisGen2Result.ORBIS_GEN2_OK;
             }
 
+            stream.Position = unchecked((long)fileOffset);
+
             while (bytesRead < size)
             {
-                if (bytesRead > ulong.MaxValue - fileOffset)
-                {
-                    return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-                }
-
-                var absoluteOffset = fileOffset + bytesRead;
-                if (absoluteOffset > long.MaxValue)
-                {
-                    return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-                }
-
                 var request = (int)Math.Min((ulong)buffer.Length, size - bytesRead);
-                int read;
+                var read = stream.Read(buffer, 0, request);
-                lock (cachedFile.Gate)
-                {
-                    cachedFile.Stream.Position = unchecked((long)absoluteOffset);
-                    read = cachedFile.Stream.Read(buffer, 0, request);
-                }
-
                 if (read <= 0)
                 {
                     break;
@@ -752,44 +681,6 @@ public static class AmprExports
         return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
 
-    private static bool TryGetCachedHostFile(string hostPath, out CachedHostFile file, out int result)
-    {
-        file = null!;
-        result = (int)OrbisGen2Result.ORBIS_GEN2_OK;
-
-        string cachePath;
-        try
-        {
-            cachePath = Path.GetFullPath(hostPath);
-        }
-        catch
-        {
-            cachePath = hostPath;
-        }
-
-        var lazy = _hostFileCache.GetOrAdd(
-            cachePath,
-            static path => new Lazy<CachedHostFile>(() => new CachedHostFile(path), isThreadSafe: true));
-
-        try
-        {
-            file = lazy.Value;
-            return true;
-        }
-        catch (UnauthorizedAccessException)
-        {
-            _hostFileCache.TryRemove(cachePath, out _);
-            result = (int)OrbisGen2Result.ORBIS_GEN2_ERROR_PERMISSION_DENIED;
-            return false;
-        }
-        catch (IOException)
-        {
-            _hostFileCache.TryRemove(cachePath, out _);
-            result = (int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
-            return false;
-        }
-    }
-
     private static bool AppendReadFileRecord(
         CpuContext ctx,
         ulong commandBuffer,
@@ -917,6 +808,19 @@ public static class AmprExports
         return true;
     }
 
+    private static bool TryReadUInt32(CpuContext ctx, ulong address, out uint value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+        if (!ctx.Memory.TryRead(address, buffer))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt32LittleEndian(buffer);
+        return true;
+    }
+
     private static void TraceAmpr(CpuContext ctx, string operation, ulong commandBuffer, ulong arg0, ulong arg1)
     {
         if (!_traceAmpr)

src/SharpEmu.Libs/Ampr/AmprFileRegistry.cs

@@ -21,7 +21,7 @@ internal static class AmprFileRegistry
         return _hostPathsById.TryGetValue(id, out hostPath!);
     }
 
-    internal static uint ComputeFileId(string guestPath)
+    private static uint ComputeFileId(string guestPath)
     {
         var bytes = System.Text.Encoding.UTF8.GetBytes(guestPath);
 

src/SharpEmu.Libs/Ampr/PakDirectoryTracker.cs

@@ -1,156 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using System.Buffers.Binary;
-using System.Collections.Concurrent;
-using System.Text;
-using SharpEmu.HLE;
-
-namespace SharpEmu.Libs.Ampr;
-
-/// <summary>
-/// sceAmprAprCommandBufferReadFile carries -1 instead of an absolute offset whenever the guest
-/// wants "the next sequential chunk" of a file. For an id Software PACK archive that sequence is
-/// always header -> directory table -> individual archived files, and the guest never tells us
-/// which archived file it wants next - only the byte count it expects, taken from the very
-/// directory entry it already parsed on its side. This tracks a per-fileId read cursor, and once
-/// the directory table has streamed past, parses it so later reads can be matched back to their
-/// real absolute offset by the size the guest asks for.
-/// </summary>
-internal static class PakDirectoryTracker
-{
-    private const int DirectoryEntrySize = 64;
-    private const int DirectoryEntryNameLength = 56;
-
-    private static readonly bool _trace =
-        string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_AMPR"), "1", StringComparison.Ordinal) ||
-        string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_AMPR_READS"), "1", StringComparison.Ordinal);
-
-    private sealed class DirectoryEntry(string name, uint filePos, uint fileLen)
-    {
-        public string Name { get; } = name;
-        public uint FilePos { get; } = filePos;
-        public uint FileLen { get; } = fileLen;
-        public bool Consumed { get; set; }
-    }
-
-    private sealed class FileState
-    {
-        public ulong NextOffset;
-        public bool ExpectingDirectory;
-        public List<DirectoryEntry>? Directory;
-    }
-
-    private static readonly ConcurrentDictionary<uint, FileState> _state = new();
-
-    /// <summary>
-    /// Resolves what "read the next sequential chunk of size <paramref name="requestedSize"/>"
-    /// really means for this fileId: an unconsumed directory entry whose length matches, if the
-    /// directory has already been parsed, otherwise the tracked linear cursor.
-    /// </summary>
-    public static ulong ResolveSequentialOffset(uint fileId, ulong requestedSize)
-    {
-        var state = _state.GetOrAdd(fileId, static _ => new FileState());
-
-        if (state.Directory is { } entries)
-        {
-            foreach (var entry in entries)
-            {
-                if (!entry.Consumed && entry.FileLen == requestedSize)
-                {
-                    entry.Consumed = true;
-                    if (_trace)
-                    {
-                        Console.Error.WriteLine(
-                            $"[LOADER][TRACE] pak.directory_match: id=0x{fileId:X8} name='{entry.Name}' " +
-                            $"filepos=0x{entry.FilePos:X8} filelen=0x{entry.FileLen:X8}");
-                    }
-
-                    return entry.FilePos;
-                }
-            }
-        }
-
-        return state.NextOffset;
-    }
-
-    /// <summary>
-    /// Feeds back a completed read so the tracker can advance its cursor, recognize a PACK
-    /// header and jump straight to its directory table, or parse the directory table itself
-    /// once it streams past.
-    /// </summary>
-    public static void OnReadCompleted(CpuContext ctx, uint fileId, ulong destination, ulong fileOffset, ulong bytesRead)
-    {
-        if (bytesRead == 0)
-        {
-            return;
-        }
-
-        var state = _state.GetOrAdd(fileId, static _ => new FileState());
-
-        if (state.ExpectingDirectory && fileOffset == state.NextOffset)
-        {
-            state.Directory = TryParseDirectory(ctx, destination, bytesRead);
-            state.ExpectingDirectory = false;
-            state.NextOffset = fileOffset + bytesRead;
-            if (_trace)
-            {
-                Console.Error.WriteLine(
-                    $"[LOADER][TRACE] pak.directory_parsed: id=0x{fileId:X8} entries={state.Directory?.Count ?? 0}");
-            }
-
-            return;
-        }
-
-        if (fileOffset == 0 && bytesRead >= 12 && TryReadPackHeader(ctx, destination, out var dirOffset))
-        {
-            state.NextOffset = dirOffset;
-            state.ExpectingDirectory = true;
-            return;
-        }
-
-        state.NextOffset = fileOffset + bytesRead;
-    }
-
-    private static bool TryReadPackHeader(CpuContext ctx, ulong destination, out ulong dirOffset)
-    {
-        dirOffset = 0;
-        Span<byte> header = stackalloc byte[12];
-        if (!ctx.Memory.TryRead(destination, header) ||
-            header[0] != (byte)'P' || header[1] != (byte)'A' || header[2] != (byte)'C' || header[3] != (byte)'K')
-        {
-            return false;
-        }
-
-        dirOffset = BinaryPrimitives.ReadUInt32LittleEndian(header[4..8]);
-        return true;
-    }
-
-    private static List<DirectoryEntry>? TryParseDirectory(CpuContext ctx, ulong destination, ulong length)
-    {
-        var count = (int)(length / DirectoryEntrySize);
-        if (count <= 0)
-        {
-            return null;
-        }
-
-        var entries = new List<DirectoryEntry>(count);
-        Span<byte> record = stackalloc byte[DirectoryEntrySize];
-        for (var i = 0; i < count; i++)
-        {
-            if (!ctx.Memory.TryRead(destination + (ulong)(i * DirectoryEntrySize), record))
-            {
-                break;
-            }
-
-            var nameBytes = record[..DirectoryEntryNameLength];
-            var nullIndex = nameBytes.IndexOf((byte)0);
-            var name = Encoding.ASCII.GetString(nullIndex >= 0 ? nameBytes[..nullIndex] : nameBytes);
-            var filePos = BinaryPrimitives.ReadUInt32LittleEndian(record.Slice(56, 4));
-            var fileLen = BinaryPrimitives.ReadUInt32LittleEndian(record.Slice(60, 4));
-            entries.Add(new DirectoryEntry(name, filePos, fileLen));
-        }
-
-        return entries;
-    }
-}

src/SharpEmu.Libs/AppContent/AppContentExports.cs

@@ -73,7 +73,7 @@ public static class AppContentExports
         var valueAddress = ctx[CpuRegister.Rsi];
         if (valueAddress == 0)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         int value;
@@ -83,18 +83,18 @@ public static class AppContentExports
         }
         else if (!TryReadUserDefinedParam(paramId, out value))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         Span<byte> valueBytes = stackalloc byte[sizeof(int)];
         BinaryPrimitives.WriteInt32LittleEndian(valueBytes, value);
         if (!ctx.Memory.TryWrite(valueAddress, valueBytes))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         TraceAppContent($"app_param_get_int id={paramId} value={value}");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -168,6 +168,12 @@ public static class AppContentExports
         }
     }
 
+    private static int SetReturn(CpuContext ctx, OrbisGen2Result result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)(int)result);
+        return (int)result;
+    }
+
     private static void TraceAppContent(string message)
     {
         if (!string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_APP_CONTENT"), "1", StringComparison.Ordinal))

src/SharpEmu.Libs/Audio/AudioOut2Exports.cs

@@ -3,19 +3,15 @@
 
 using SharpEmu.HLE;
 using System.Buffers.Binary;
+using System.Threading;
 
 namespace SharpEmu.Libs.Audio;
 
 public static class AudioOut2Exports
 {
-    // Sized from guest evidence, not SDK headers: Quake keeps its
+    private const int AudioOut2ContextParamSize = 0x80;
-    // SceAudioOut2ContextParam on the stack with the frame canary at param+0x60,
-    // and an earlier 0x80-byte ResetParam write zeroed that canary
-    // (__stack_chk_fail right after sceAudioOut2UserCreate, which silently killed
-    // the whole audio init). Stay well below 0x60 and only write the prefix we
-    // populate.
-    private const int AudioOut2ContextParamSize = 0x30;
     private const int AudioOut2ContextMemorySize = 0x10000;
+    private const int AudioOut2ContextMemoryAlignment = 0x10000;
     private static long _nextContextHandle = 1;
     private static long _nextUserHandle = 1;
     private static int _nextPortId;
@@ -41,7 +37,7 @@ public static class AudioOut2Exports
         var paramAddress = ctx[CpuRegister.Rdi];
         if (paramAddress == 0)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         Span<byte> param = stackalloc byte[AudioOut2ContextParamSize];
@@ -52,8 +48,8 @@ public static class AudioOut2Exports
         BinaryPrimitives.WriteUInt32LittleEndian(param[0x0C..], 0x400);
 
         return ctx.Memory.TryWrite(paramAddress, param)
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -64,15 +60,22 @@ public static class AudioOut2Exports
     public static int AudioOut2ContextQueryMemory(CpuContext ctx)
     {
         var paramAddress = ctx[CpuRegister.Rdi];
-        var outMemorySizeAddress = ctx[CpuRegister.Rsi];
+        var memoryInfoAddress = ctx[CpuRegister.Rsi];
-        if (paramAddress == 0 || outMemorySizeAddress == 0)
+        if (paramAddress == 0 || memoryInfoAddress == 0)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
-        
+
-        return ctx.TryWriteUInt64(outMemorySizeAddress, AudioOut2ContextMemorySize)
+        Span<byte> memoryInfo = stackalloc byte[0x20];
-            ? ctx.SetReturn(0)
+        memoryInfo.Clear();
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+        BinaryPrimitives.WriteUInt64LittleEndian(memoryInfo[0x00..], AudioOut2ContextMemorySize);
+        BinaryPrimitives.WriteUInt64LittleEndian(memoryInfo[0x08..], AudioOut2ContextMemoryAlignment);
+        BinaryPrimitives.WriteUInt64LittleEndian(memoryInfo[0x10..], AudioOut2ContextMemorySize);
+        BinaryPrimitives.WriteUInt64LittleEndian(memoryInfo[0x18..], AudioOut2ContextMemoryAlignment);
+
+        return ctx.Memory.TryWrite(memoryInfoAddress, memoryInfo)
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -88,13 +91,13 @@ public static class AudioOut2Exports
         var outContextAddress = ctx[CpuRegister.Rcx];
         if (paramAddress == 0 || memoryAddress == 0 || memorySize == 0 || outContextAddress == 0)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         var handle = (ulong)Interlocked.Increment(ref _nextContextHandle);
-        return ctx.TryWriteUInt64(outContextAddress, handle)
+        return TryWriteUInt64(ctx, outContextAddress, handle)
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -102,7 +105,7 @@ public static class AudioOut2Exports
         ExportName = "sceAudioOut2ContextDestroy",
         Target = Generation.Gen5,
         LibraryName = "libSceAudioOut2")]
-    public static int AudioOut2ContextDestroy(CpuContext ctx) => ctx.SetReturn(0);
+    public static int AudioOut2ContextDestroy(CpuContext ctx) => SetReturn(ctx, 0);
 
     [SysAbiExport(
         Nid = "JK2wamZPzwM",
@@ -117,14 +120,14 @@ public static class AudioOut2Exports
         var contextAddress = ctx[CpuRegister.Rcx];
         if (type < 0 || type > 255 || paramAddress == 0 || outPortAddress == 0 || contextAddress == 0)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         var portId = unchecked((uint)Interlocked.Increment(ref _nextPortId)) & 0xFF;
         var handle = 0x2000_0000UL | ((ulong)(uint)type << 16) | portId;
-        return ctx.TryWriteUInt64(outPortAddress, handle)
+        return TryWriteUInt64(ctx, outPortAddress, handle)
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -138,7 +141,7 @@ public static class AudioOut2Exports
         var stateAddress = ctx[CpuRegister.Rsi];
         if (handle == 0 || stateAddress == 0)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         var type = (int)((handle >> 16) & 0xFF);
@@ -151,8 +154,8 @@ public static class AudioOut2Exports
         BinaryPrimitives.WriteInt16LittleEndian(state[0x04..], -1);
 
         return ctx.Memory.TryWrite(stateAddress, state)
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -165,7 +168,7 @@ public static class AudioOut2Exports
         var infoAddress = ctx[CpuRegister.Rdi];
         if (infoAddress == 0)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         Span<byte> info = stackalloc byte[0x40];
@@ -175,8 +178,8 @@ public static class AudioOut2Exports
         BinaryPrimitives.WriteUInt32LittleEndian(info[0x08..], 48000);
 
         return ctx.Memory.TryWrite(infoAddress, info)
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -184,14 +187,14 @@ public static class AudioOut2Exports
         ExportName = "sceAudioOut2PortDestroy",
         Target = Generation.Gen5,
         LibraryName = "libSceAudioOut2")]
-    public static int AudioOut2PortDestroy(CpuContext ctx) => ctx.SetReturn(0);
+    public static int AudioOut2PortDestroy(CpuContext ctx) => SetReturn(ctx, 0);
 
     [SysAbiExport(
         Nid = "IaZXJ9M79uo",
         ExportName = "sceAudioOut2UserDestroy",
         Target = Generation.Gen5,
         LibraryName = "libSceAudioOut2")]
-    public static int AudioOut2UserDestroy(CpuContext ctx) => ctx.SetReturn(0);
+    public static int AudioOut2UserDestroy(CpuContext ctx) => SetReturn(ctx, 0);
 
     [SysAbiExport(
         Nid = "xywYcRB7nbQ",
@@ -204,12 +207,25 @@ public static class AudioOut2Exports
         var outUserAddress = ctx[CpuRegister.Rsi];
         if ((userId != 0 && userId != 1 && userId != 255) || outUserAddress == 0)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         var handle = (ulong)Interlocked.Increment(ref _nextUserHandle);
-        return ctx.TryWriteUInt64(outUserAddress, handle)
+        return TryWriteUInt64(ctx, outUserAddress, handle)
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+    }
+
+    private static bool TryWriteUInt64(CpuContext ctx, ulong address, ulong value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(ulong)];
+        BinaryPrimitives.WriteUInt64LittleEndian(buffer, value);
+        return ctx.Memory.TryWrite(address, buffer);
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
     }
 }

src/SharpEmu.Libs/Audio/AudioOutExports.cs

@@ -1,234 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using SharpEmu.HLE;
-using System.Buffers;
-using System.Collections.Concurrent;
-using System.Diagnostics;
-
-namespace SharpEmu.Libs.Audio;
-
-public static class AudioOutExports
-{
-    private static readonly ConcurrentDictionary<int, PortState> Ports = new();
-    private static int _nextPortHandle;
-
-    private sealed class PortState : IDisposable
-    {
-        private readonly object _paceGate = new();
-        private long _nextSilentOutput;
-
-        public PortState(
-            int userId,
-            int type,
-            uint bufferLength,
-            uint frequency,
-            int format,
-            int channels,
-            int bytesPerSample,
-            bool isFloat,
-            WinMmAudioPort? backend)
-        {
-            UserId = userId;
-            Type = type;
-            BufferLength = bufferLength;
-            Frequency = frequency;
-            Format = format;
-            Channels = channels;
-            BytesPerSample = bytesPerSample;
-            IsFloat = isFloat;
-            Backend = backend;
-        }
-
-        public int UserId { get; }
-        public int Type { get; }
-        public uint BufferLength { get; }
-        public uint Frequency { get; }
-        public int Format { get; }
-        public int Channels { get; }
-        public int BytesPerSample { get; }
-        public bool IsFloat { get; }
-        public WinMmAudioPort? Backend { get; }
-        public int BufferByteLength =>
-            checked((int)BufferLength * Channels * BytesPerSample);
-
-        public void PaceSilence()
-        {
-            long delay;
-            lock (_paceGate)
-            {
-                var now = Stopwatch.GetTimestamp();
-                if (_nextSilentOutput < now)
-                {
-                    _nextSilentOutput = now;
-                }
-
-                delay = _nextSilentOutput - now;
-                _nextSilentOutput += checked(
-                    (long)Math.Ceiling(
-                        Stopwatch.Frequency * (double)BufferLength / Frequency));
-            }
-
-            if (delay > 0)
-            {
-                Thread.Sleep(TimeSpan.FromSeconds((double)delay / Stopwatch.Frequency));
-            }
-        }
-
-        public void Dispose() => Backend?.Dispose();
-    }
-
-    [SysAbiExport(
-        Nid = "JfEPXVxhFqA",
-        ExportName = "sceAudioOutInit",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceAudioOut")]
-    public static int AudioOutInit(CpuContext ctx) => ctx.SetReturn(0);
-
-    [SysAbiExport(
-        Nid = "ekNvsT22rsY",
-        ExportName = "sceAudioOutOpen",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceAudioOut")]
-    public static int AudioOutOpen(CpuContext ctx)
-    {
-        var userId = unchecked((int)ctx[CpuRegister.Rdi]);
-        var type = unchecked((int)ctx[CpuRegister.Rsi]);
-        var bufferLength = unchecked((uint)ctx[CpuRegister.Rcx]);
-        var frequency = unchecked((uint)ctx[CpuRegister.R8]);
-        var format = unchecked((int)ctx[CpuRegister.R9]);
-        if (bufferLength == 0 || frequency == 0 ||
-            !TryGetFormat(format, out var channels, out var bytesPerSample, out var isFloat))
-        {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
-        }
-
-        WinMmAudioPort? backend = null;
-        string backendName;
-        try
-        {
-            backend = new WinMmAudioPort(frequency);
-            backendName = "winmm";
-        }
-        catch (Exception exception)
-        {
-            backendName = "silent";
-            Console.Error.WriteLine(
-                $"[LOADER][WARN] AudioOut host backend unavailable: {exception.Message}");
-        }
-
-        var handle = Interlocked.Increment(ref _nextPortHandle);
-        Ports[handle] = new PortState(
-            userId,
-            type,
-            bufferLength,
-            frequency,
-            format,
-            channels,
-            bytesPerSample,
-            isFloat,
-            backend);
-        Console.Error.WriteLine(
-            $"[LOADER][INFO] AudioOut port {handle}: {frequency} Hz, " +
-            $"{channels} ch, {(isFloat ? "float32" : "s16")}, " +
-            $"{bufferLength} frames, backend={backendName}");
-        return ctx.SetReturn(handle);
-    }
-
-    [SysAbiExport(
-        Nid = "s1--uE9mBFw",
-        ExportName = "sceAudioOutClose",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceAudioOut")]
-    public static int AudioOutClose(CpuContext ctx)
-    {
-        var handle = unchecked((int)ctx[CpuRegister.Rdi]);
-        if (!Ports.TryRemove(handle, out var port))
-        {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
-        }
-
-        port.Dispose();
-        return ctx.SetReturn(0);
-    }
-
-    [SysAbiExport(
-        Nid = "QOQtbeDqsT4",
-        ExportName = "sceAudioOutOutput",
-        Target = Generation.Gen5,
-        LibraryName = "libSceAudioOut")]
-    public static int AudioOutOutput(CpuContext ctx)
-    {
-        var handle = unchecked((int)ctx[CpuRegister.Rdi]);
-        var sourceAddress = ctx[CpuRegister.Rsi];
-        if (!Ports.TryGetValue(handle, out var port))
-        {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
-        }
-
-        if (sourceAddress == 0)
-        {
-            return ctx.SetReturn(0);
-        }
-
-        var buffer = ArrayPool<byte>.Shared.Rent(port.BufferByteLength);
-        try
-        {
-            var source = buffer.AsSpan(0, port.BufferByteLength);
-            if (!ctx.Memory.TryRead(sourceAddress, source))
-            {
-                return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
-            }
-
-            if (port.Backend is null ||
-                !port.Backend.Submit(
-                    source,
-                    port.BufferLength,
-                    port.Channels,
-                    port.BytesPerSample,
-                    port.IsFloat))
-            {
-                port.PaceSilence();
-            }
-
-            return ctx.SetReturn(0);
-        }
-        finally
-        {
-            ArrayPool<byte>.Shared.Return(buffer);
-        }
-    }
-
-    [SysAbiExport(
-        Nid = "b+uAV89IlxE",
-        ExportName = "sceAudioOutSetVolume",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceAudioOut")]
-    public static int AudioOutSetVolume(CpuContext ctx)
-    {
-        var handle = unchecked((int)ctx[CpuRegister.Rdi]);
-        return ctx.SetReturn(
-            Ports.ContainsKey(handle)
-                ? 0
-                : (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
-    }
-
-    private static bool TryGetFormat(
-        int rawFormat,
-        out int channels,
-        out int bytesPerSample,
-        out bool isFloat)
-    {
-        var format = rawFormat & 0xFF;
-        channels = format switch
-        {
-            0 or 3 => 1,
-            1 or 4 => 2,
-            2 or 5 or 6 or 7 => 8,
-            _ => 0,
-        };
-        bytesPerSample = format is >= 3 and <= 5 or 7 ? 4 : 2;
-        isFloat = bytesPerSample == 4;
-        return channels != 0;
-    }
-}

src/SharpEmu.Libs/Audio/WinMmAudioPort.cs

@@ -1,302 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using System.Buffers;
-using System.Buffers.Binary;
-using System.Runtime.InteropServices;
-
-namespace SharpEmu.Libs.Audio;
-
-internal sealed class WinMmAudioPort : IDisposable
-{
-    private const uint WaveMapper = uint.MaxValue;
-    private const uint CallbackEvent = 0x0005_0000;
-    private const ushort WaveFormatPcm = 1;
-    private const uint WaveHeaderDone = 0x0000_0001;
-    private const int MaximumQueuedPcmBytes = 32 * 1024;
-
-    private readonly object _gate = new();
-    private readonly AutoResetEvent _completion = new(false);
-    private readonly Queue<NativeBuffer> _buffers = new();
-    private IntPtr _device;
-    private int _queuedPcmBytes;
-    private bool _disposed;
-
-    public WinMmAudioPort(uint sampleRate)
-    {
-        if (!OperatingSystem.IsWindows())
-        {
-            throw new PlatformNotSupportedException("WinMM audio is only available on Windows.");
-        }
-
-        var format = new WaveFormat
-        {
-            FormatTag = WaveFormatPcm,
-            Channels = 2,
-            SamplesPerSecond = sampleRate,
-            AverageBytesPerSecond = checked(sampleRate * 4),
-            BlockAlign = 4,
-            BitsPerSample = 16,
-            ExtraSize = 0,
-        };
-        var result = WaveOutOpen(
-            out _device,
-            WaveMapper,
-            ref format,
-            _completion.SafeWaitHandle.DangerousGetHandle(),
-            IntPtr.Zero,
-            CallbackEvent);
-        if (result != 0)
-        {
-            throw new InvalidOperationException($"waveOutOpen failed with MMRESULT {result}.");
-        }
-    }
-
-    public bool Submit(
-        ReadOnlySpan<byte> source,
-        uint frames,
-        int channels,
-        int bytesPerSample,
-        bool isFloat)
-    {
-        lock (_gate)
-        {
-            if (_disposed)
-            {
-                return false;
-            }
-
-            var outputLength = checked((int)frames * 4);
-            ReapCompletedBuffers();
-            while (_queuedPcmBytes != 0 &&
-                   _queuedPcmBytes + outputLength > MaximumQueuedPcmBytes)
-            {
-                if (!_completion.WaitOne(TimeSpan.FromSeconds(1)))
-                {
-                    return false;
-                }
-
-                ReapCompletedBuffers();
-            }
-
-            var output = ArrayPool<byte>.Shared.Rent(outputLength);
-            try
-            {
-                ConvertToStereoPcm16(
-                    source,
-                    output.AsSpan(0, outputLength),
-                    checked((int)frames),
-                    channels,
-                    bytesPerSample,
-                    isFloat);
-                return QueueBuffer(output.AsSpan(0, outputLength));
-            }
-            finally
-            {
-                ArrayPool<byte>.Shared.Return(output);
-            }
-        }
-    }
-
-    public void Dispose()
-    {
-        lock (_gate)
-        {
-            if (_disposed)
-            {
-                return;
-            }
-
-            _disposed = true;
-            if (_device != IntPtr.Zero)
-            {
-                WaveOutReset(_device);
-                while (_buffers.TryDequeue(out var buffer))
-                {
-                    ReleaseBuffer(buffer);
-                }
-
-                WaveOutClose(_device);
-                _device = IntPtr.Zero;
-            }
-
-            _completion.Dispose();
-        }
-    }
-
-    private bool QueueBuffer(ReadOnlySpan<byte> data)
-    {
-        var dataAddress = Marshal.AllocHGlobal(data.Length);
-        var headerAddress = IntPtr.Zero;
-        try
-        {
-            unsafe
-            {
-                data.CopyTo(new Span<byte>((void*)dataAddress, data.Length));
-            }
-
-            var header = new WaveHeader
-            {
-                Data = dataAddress,
-                BufferLength = checked((uint)data.Length),
-            };
-            headerAddress = Marshal.AllocHGlobal(Marshal.SizeOf<WaveHeader>());
-            Marshal.StructureToPtr(header, headerAddress, false);
-
-            var result = WaveOutPrepareHeader(
-                _device,
-                headerAddress,
-                checked((uint)Marshal.SizeOf<WaveHeader>()));
-            if (result != 0)
-            {
-                return false;
-            }
-
-            result = WaveOutWrite(
-                _device,
-                headerAddress,
-                checked((uint)Marshal.SizeOf<WaveHeader>()));
-            if (result != 0)
-            {
-                WaveOutUnprepareHeader(
-                    _device,
-                    headerAddress,
-                    checked((uint)Marshal.SizeOf<WaveHeader>()));
-                return false;
-            }
-
-            _buffers.Enqueue(new NativeBuffer(dataAddress, headerAddress, data.Length));
-            _queuedPcmBytes += data.Length;
-            dataAddress = IntPtr.Zero;
-            headerAddress = IntPtr.Zero;
-            return true;
-        }
-        finally
-        {
-            if (headerAddress != IntPtr.Zero)
-            {
-                Marshal.FreeHGlobal(headerAddress);
-            }
-
-            if (dataAddress != IntPtr.Zero)
-            {
-                Marshal.FreeHGlobal(dataAddress);
-            }
-        }
-    }
-
-    private void ReapCompletedBuffers()
-    {
-        while (_buffers.TryPeek(out var buffer))
-        {
-            var header = Marshal.PtrToStructure<WaveHeader>(buffer.Header);
-            if ((header.Flags & WaveHeaderDone) == 0)
-            {
-                return;
-            }
-
-            _buffers.Dequeue();
-            ReleaseBuffer(buffer);
-        }
-    }
-
-    private void ReleaseBuffer(NativeBuffer buffer)
-    {
-        WaveOutUnprepareHeader(
-            _device,
-            buffer.Header,
-            checked((uint)Marshal.SizeOf<WaveHeader>()));
-        _queuedPcmBytes -= buffer.Length;
-        Marshal.FreeHGlobal(buffer.Header);
-        Marshal.FreeHGlobal(buffer.Data);
-    }
-
-    private static void ConvertToStereoPcm16(
-        ReadOnlySpan<byte> source,
-        Span<byte> destination,
-        int frames,
-        int channels,
-        int bytesPerSample,
-        bool isFloat)
-    {
-        var sourceFrameSize = checked(channels * bytesPerSample);
-        for (var frame = 0; frame < frames; frame++)
-        {
-            var sourceFrame = source.Slice(frame * sourceFrameSize, sourceFrameSize);
-            var left = ReadSample(sourceFrame, 0, bytesPerSample, isFloat);
-            var right = channels == 1
-                ? left
-                : ReadSample(sourceFrame, 1, bytesPerSample, isFloat);
-            BinaryPrimitives.WriteInt16LittleEndian(destination[(frame * 4)..], left);
-            BinaryPrimitives.WriteInt16LittleEndian(destination[((frame * 4) + 2)..], right);
-        }
-    }
-
-    private static short ReadSample(
-        ReadOnlySpan<byte> frame,
-        int channel,
-        int bytesPerSample,
-        bool isFloat)
-    {
-        var sample = frame.Slice(channel * bytesPerSample, bytesPerSample);
-        if (!isFloat)
-        {
-            return BinaryPrimitives.ReadInt16LittleEndian(sample);
-        }
-
-        var bits = BinaryPrimitives.ReadInt32LittleEndian(sample);
-        var value = Math.Clamp(BitConverter.Int32BitsToSingle(bits), -1.0f, 1.0f);
-        return checked((short)MathF.Round(value * short.MaxValue));
-    }
-
-    private readonly record struct NativeBuffer(IntPtr Data, IntPtr Header, int Length);
-
-    [StructLayout(LayoutKind.Sequential, Pack = 2)]
-    private struct WaveFormat
-    {
-        public ushort FormatTag;
-        public ushort Channels;
-        public uint SamplesPerSecond;
-        public uint AverageBytesPerSecond;
-        public ushort BlockAlign;
-        public ushort BitsPerSample;
-        public ushort ExtraSize;
-    }
-
-    [StructLayout(LayoutKind.Sequential)]
-    private struct WaveHeader
-    {
-        public IntPtr Data;
-        public uint BufferLength;
-        public uint BytesRecorded;
-        public nuint User;
-        public uint Flags;
-        public uint Loops;
-        public IntPtr Next;
-        public nuint Reserved;
-    }
-
-    [DllImport("winmm.dll", EntryPoint = "waveOutOpen")]
-    private static extern uint WaveOutOpen(
-        out IntPtr device,
-        uint deviceId,
-        ref WaveFormat format,
-        IntPtr callback,
-        IntPtr instance,
-        uint flags);
-
-    [DllImport("winmm.dll", EntryPoint = "waveOutPrepareHeader")]
-    private static extern uint WaveOutPrepareHeader(IntPtr device, IntPtr header, uint headerSize);
-
-    [DllImport("winmm.dll", EntryPoint = "waveOutWrite")]
-    private static extern uint WaveOutWrite(IntPtr device, IntPtr header, uint headerSize);
-
-    [DllImport("winmm.dll", EntryPoint = "waveOutUnprepareHeader")]
-    private static extern uint WaveOutUnprepareHeader(IntPtr device, IntPtr header, uint headerSize);
-
-    [DllImport("winmm.dll", EntryPoint = "waveOutReset")]
-    private static extern uint WaveOutReset(IntPtr device);
-
-    [DllImport("winmm.dll", EntryPoint = "waveOutClose")]
-    private static extern uint WaveOutClose(IntPtr device);
-}

src/SharpEmu.Libs/AvPlayer/AvPlayerExports.cs

@@ -1,104 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using SharpEmu.HLE;
-using SharpEmu.Libs.Kernel;
-
-namespace SharpEmu.Libs.AvPlayer;
-
-public static class AvPlayerExports
-{
-    private const int InvalidParameters = unchecked((int)0x806A0001);
-    private static readonly object StateGate = new();
-    private static readonly HashSet<ulong> Players = new();
-
-    [SysAbiExport(
-        Nid = "aS66RI0gGgo",
-        ExportName = "sceAvPlayerInit",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceAvPlayer")]
-    public static int AvPlayerInit(CpuContext ctx)
-    {
-        if (ctx[CpuRegister.Rdi] == 0 ||
-            !KernelMemoryCompatExports.TryAllocateHleData(ctx, 0x40, 16, out var handle))
-        {
-            ctx[CpuRegister.Rax] = 0;
-            return 0;
-        }
-
-        lock (StateGate)
-        {
-            Players.Add(handle);
-        }
-
-        ctx[CpuRegister.Rax] = handle;
-        return unchecked((int)handle);
-    }
-
-    [SysAbiExport(
-        Nid = "JdksQu8pNdQ",
-        ExportName = "sceAvPlayerGetVideoDataEx",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceAvPlayer")]
-    public static int AvPlayerGetVideoDataEx(CpuContext ctx)
-    {
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    // "UbQoYawOsfY" is sceAvPlayerIsActive, not sceAvPlayerGetVideoDataEx (the previous NID here
-    // was wrong - verified by hashing both names against scripts/ps5_names.txt). No player is
-    // ever actually active in this HLE implementation, so report false/inactive.
-    [SysAbiExport(
-        Nid = "UbQoYawOsfY",
-        ExportName = "sceAvPlayerIsActive",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceAvPlayer")]
-    public static int AvPlayerIsActive(CpuContext ctx)
-    {
-        ctx[CpuRegister.Rax] = 0;
-        return 0;
-    }
-
-    [SysAbiExport(
-        Nid = "Wnp1OVcrZgk",
-        ExportName = "sceAvPlayerGetAudioData",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceAvPlayer")]
-    public static int AvPlayerGetAudioData(CpuContext ctx)
-    {
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    [SysAbiExport(
-        Nid = "HD1YKVU26-M",
-        ExportName = "sceAvPlayerPostInit",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceAvPlayer")]
-    public static int AvPlayerPostInit(CpuContext ctx)
-    {
-        var handle = ctx[CpuRegister.Rdi];
-        var dataAddress = ctx[CpuRegister.Rsi];
-        lock (StateGate)
-        {
-            return ctx.SetReturn(
-                handle != 0 && dataAddress != 0 && Players.Contains(handle)
-                    ? 0
-                    : InvalidParameters);
-        }
-    }
-
-    [SysAbiExport(
-        Nid = "NkJwDzKmIlw",
-        ExportName = "sceAvPlayerClose",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceAvPlayer")]
-    public static int AvPlayerClose(CpuContext ctx)
-    {
-        lock (StateGate)
-        {
-            return ctx.SetReturn(Players.Remove(ctx[CpuRegister.Rdi]) ? 0 : InvalidParameters);
-        }
-    }
-}

src/SharpEmu.Libs/CommonDialog/CommonDialogExports.cs

@@ -8,6 +8,7 @@ namespace SharpEmu.Libs.CommonDialog;
 
 public static class CommonDialogExports
 {
+    private const int AlreadySystemInitialized = unchecked((int)0x80B80002);
     private static int _initialized;
 
     [SysAbiExport(
@@ -17,12 +18,11 @@ public static class CommonDialogExports
         LibraryName = "libSceCommonDialog")]
     public static int CommonDialogInitialize(CpuContext ctx)
     {
-        // Games can initialize the common-dialog service defensively from more than one
+        var result = Interlocked.Exchange(ref _initialized, 1) == 0
-        // subsystem. Keeping this HLE initialization idempotent avoids turning an error
+            ? 0
-        // reporting path into a second, unrelated failure.
+            : AlreadySystemInitialized;
-        Interlocked.Exchange(ref _initialized, 1);
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
-        ctx[CpuRegister.Rax] = 0;
+        return result;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
 
     [SysAbiExport(

src/SharpEmu.Libs/CommonDialog/MsgDialogExports.cs

@@ -1,185 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using SharpEmu.HLE;
-using System.Threading;
-
-namespace SharpEmu.Libs.CommonDialog;
-
-public static class MsgDialogExports
-{
-    private const int StatusNone = 0;
-    private const int StatusInitialized = 1;
-    private const int StatusFinished = 3;
-    private const int ResultSize = 0x20;
-
-    private static int _initialized;
-    private static int _status;
-
-    [SysAbiExport(
-        Nid = "lDqxaY1UbEo",
-        ExportName = "sceMsgDialogInitialize",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceMsgDialog")]
-    public static int MsgDialogInitialize(CpuContext ctx)
-    {
-        // Treat repeated initialization as success. The dialog service is process-global in
-        // this HLE implementation and has no per-call resources to recreate.
-        Interlocked.Exchange(ref _initialized, 1);
-        Interlocked.Exchange(ref _status, StatusInitialized);
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    [SysAbiExport(
-        Nid = "ePw-kqZmelo",
-        ExportName = "sceMsgDialogTerminate",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceMsgDialog")]
-    public static int MsgDialogTerminate(CpuContext ctx)
-    {
-        Interlocked.Exchange(ref _initialized, 0);
-        Interlocked.Exchange(ref _status, StatusNone);
-        return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_OK);
-    }
-
-    [SysAbiExport(
-        Nid = "b06Hh0DPEaE",
-        ExportName = "sceMsgDialogOpen",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceMsgDialog")]
-    public static int MsgDialogOpen(CpuContext ctx)
-    {
-        LogDialogMessage(ctx, ctx[CpuRegister.Rdi]);
-
-        // There is no host popup to actually show. Complete immediately with "finished" so a
-        // guest polling loop (GetStatus/UpdateStatus -> GetResult -> Close) sees a dismissed
-        // dialog on its very first poll instead of spinning forever waiting for user input.
-        Interlocked.Exchange(ref _status, StatusFinished);
-        return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_OK);
-    }
-
-    // Best-effort extraction of the dialog text so fatal-error popups are visible in the
-    // log even though no host dialog is shown. The PS5 SceMsgDialogParam layout is not
-    // fully known, so chase every qword in the struct that points at readable text - one
-    // level deep, then a second level for nested sub-param structs.
-    private static void LogDialogMessage(CpuContext ctx, ulong paramAddress)
-    {
-        if (paramAddress == 0)
-        {
-            Console.Error.WriteLine("[LOADER][INFO] sceMsgDialogOpen: param=NULL");
-            return;
-        }
-
-        Console.Error.WriteLine($"[LOADER][INFO] sceMsgDialogOpen: param=0x{paramAddress:X12}");
-
-        Span<byte> head = stackalloc byte[0xA0];
-        if (ctx.Memory.TryRead(paramAddress, head))
-        {
-            DumpPointerStrings(ctx, paramAddress, head, "param", chaseNested: true);
-        }
-    }
-
-    private static void DumpPointerStrings(CpuContext ctx, ulong baseAddress, ReadOnlySpan<byte> bytes, string label, bool chaseNested)
-    {
-        Span<byte> nested = stackalloc byte[0x40];
-        for (var offset = 0; offset + 8 <= bytes.Length; offset += 8)
-        {
-            var value = System.Buffers.Binary.BinaryPrimitives.ReadUInt64LittleEndian(bytes[offset..]);
-            if (value < 0x10000 || value == baseAddress)
-            {
-                continue;
-            }
-
-            var text = TryReadPrintableText(ctx, value);
-            if (text is not null)
-            {
-                Console.Error.WriteLine($"[LOADER][INFO]   {label}+0x{offset:X2} -> 0x{value:X12} text=\"{text}\"");
-            }
-            else if (chaseNested && ctx.Memory.TryRead(value, nested))
-            {
-                DumpPointerStrings(ctx, value, nested, $"{label}+0x{offset:X2}", chaseNested: false);
-            }
-        }
-    }
-
-    private static string? TryReadPrintableText(CpuContext ctx, ulong address)
-    {
-        Span<byte> bytes = stackalloc byte[256];
-        if (!ctx.Memory.TryRead(address, bytes))
-        {
-            return null;
-        }
-
-        var nullIndex = bytes.IndexOf((byte)0);
-        if (nullIndex < 2)
-        {
-            return null;
-        }
-
-        var candidate = bytes[..nullIndex];
-        foreach (var b in candidate)
-        {
-            if (b is < 0x20 or > 0x7E && b != (byte)'\n' && b != (byte)'\r' && b != (byte)'\t')
-            {
-                return null;
-            }
-        }
-
-        return System.Text.Encoding.ASCII.GetString(candidate).Replace("\n", "\\n").Replace("\r", "\\r");
-    }
-
-    [SysAbiExport(
-        Nid = "CWVW78Qc3fI",
-        ExportName = "sceMsgDialogGetStatus",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceMsgDialog")]
-    public static int MsgDialogGetStatus(CpuContext ctx) => SetReturn(ctx, Volatile.Read(ref _status));
-
-    [SysAbiExport(
-        Nid = "6fIC3XKt2k0",
-        ExportName = "sceMsgDialogUpdateStatus",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceMsgDialog")]
-    public static int MsgDialogUpdateStatus(CpuContext ctx) => SetReturn(ctx, Volatile.Read(ref _status));
-
-    [SysAbiExport(
-        Nid = "Lr8ovHH9l6A",
-        ExportName = "sceMsgDialogGetResult",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceMsgDialog")]
-    public static int MsgDialogGetResult(CpuContext ctx)
-    {
-        var resultAddress = ctx[CpuRegister.Rdi];
-        if (resultAddress == 0)
-        {
-            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
-        }
-
-        Span<byte> result = stackalloc byte[ResultSize];
-        result.Clear();
-        if (!ctx.Memory.TryWrite(resultAddress, result))
-        {
-            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
-        }
-
-        return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_OK);
-    }
-
-    [SysAbiExport(
-        Nid = "HTrcDKlFKuM",
-        ExportName = "sceMsgDialogClose",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceMsgDialog")]
-    public static int MsgDialogClose(CpuContext ctx)
-    {
-        Interlocked.Exchange(ref _status, StatusFinished);
-        return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_OK);
-    }
-
-    private static int SetReturn(CpuContext ctx, int result)
-    {
-        ctx[CpuRegister.Rax] = unchecked((ulong)result);
-        return result;
-    }
-}

src/SharpEmu.Libs/CxxAbiExports.cs

@@ -93,7 +93,7 @@ public static class CxaGuardExports
     }
 
     [SysAbiExport(
-        Nid = "9rAeANT2tyE",
+        Nid = "",
         ExportName = "__cxa_guard_release",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libc")]
@@ -142,7 +142,7 @@ public static class CxaGuardExports
     }
 
     [SysAbiExport(
-        Nid = "2emaaluWzUw",
+        Nid = "",
         ExportName = "__cxa_guard_abort",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libc")]

src/SharpEmu.Libs/DiscMap/DiscMapExports.cs

@@ -1,104 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using SharpEmu.HLE;
-
-namespace SharpEmu.Libs.DiscMap;
-
-/// <summary>
-/// HLE implementation of libSceDiscMap, ported from Kyty's LibDiscMap.cpp
-/// (https://github.com/InoriRus/Kyty, MIT). Titles installed to internal
-/// storage query these entry points on nearly every file access to decide
-/// whether a read must be redirected to the Blu-ray drive. Reporting every
-/// request as already resident on HDD lets the regular file system path
-/// service the read.
-/// </summary>
-public static class DiscMapExports
-{
-    private const int DiscMapErrorInvalidArgument = unchecked((int)0x81100001);
-    private const int DiscMapErrorLocationNotMapped = unchecked((int)0x81100002);
-    private const int DiscMapErrorFileNotFound = unchecked((int)0x81100003);
-    private const int DiscMapErrorNoBitmapInfo = unchecked((int)0x81100004);
-
-    [SysAbiExport(
-        Nid = "lbQKqsERhtE",
-        ExportName = "sceDiscMapIsRequestOnHDD",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceDiscMap")]
-    public static int DiscMapIsRequestOnHDD(CpuContext ctx)
-    {
-        var pathAddress = ctx[CpuRegister.Rdi];
-        var offset = ctx[CpuRegister.Rsi];
-        var size = ctx[CpuRegister.Rdx];
-        var resultAddress = ctx[CpuRegister.Rcx];
-
-        if (pathAddress == 0 || resultAddress == 0)
-        {
-            return DiscMapErrorInvalidArgument;
-        }
-
-        if (!ctx.TryWriteInt32(resultAddress, 1))
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
-        }
-
-        TraceDiscMap(ctx, "sceDiscMapIsRequestOnHDD", pathAddress, offset, size);
-
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    [SysAbiExport(
-        Nid = "fJgP+wqifno",
-        ExportName = "sceDiscMapUnknownFJgP",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceDiscMap")]
-    public static int DiscMapUnknownFJgP(CpuContext ctx) => WriteMappingTriple(ctx, "sceDiscMapUnknownFJgP");
-
-    [SysAbiExport(
-        Nid = "ioKMruft1ek",
-        ExportName = "sceDiscMapUnknownIoKM",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceDiscMap")]
-    public static int DiscMapUnknownIoKM(CpuContext ctx) => WriteMappingTriple(ctx, "sceDiscMapUnknownIoKM");
-
-    private static int WriteMappingTriple(CpuContext ctx, string exportName)
-    {
-        var pathAddress = ctx[CpuRegister.Rdi];
-        var offset = ctx[CpuRegister.Rsi];
-        var size = ctx[CpuRegister.Rdx];
-        var flagsAddress = ctx[CpuRegister.Rcx];
-        var outAddress1 = ctx[CpuRegister.R8];
-        var outAddress2 = ctx[CpuRegister.R9];
-
-        if (pathAddress == 0 || flagsAddress == 0 || outAddress1 == 0 || outAddress2 == 0)
-        {
-            return DiscMapErrorInvalidArgument;
-        }
-
-        if (!ctx.TryWriteUInt64(flagsAddress, 0) ||
-            !ctx.TryWriteUInt64(outAddress1, 0) ||
-            !ctx.TryWriteUInt64(outAddress2, 0))
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
-        }
-
-        TraceDiscMap(ctx, exportName, pathAddress, offset, size);
-
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    private static void TraceDiscMap(CpuContext ctx, string exportName, ulong pathAddress, ulong offset, ulong size)
-    {
-        if (!string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_DISCMAP"), "1", StringComparison.Ordinal))
-        {
-            return;
-        }
-
-        var path = ctx.TryReadNullTerminatedUtf8(pathAddress, 1024, out var value)
-            ? value
-            : $"<unreadable 0x{pathAddress:X16}>";
-        Console.Error.WriteLine($"[HLE][DISCMAP] {exportName} path={path} offset=0x{offset:X} size=0x{size:X}");
-    }
-}

src/SharpEmu.Libs/Fiber/FiberExports.cs

@@ -104,17 +104,17 @@ public static class FiberExports
         var optParam = ctx[CpuRegister.Rdi];
         if (optParam == 0)
         {
-            return ctx.SetReturn(FiberErrorNull);
+            return SetReturn(ctx, FiberErrorNull);
         }
 
         if ((optParam & 7) != 0)
         {
-            return ctx.SetReturn(FiberErrorAlignment);
+            return SetReturn(ctx, FiberErrorAlignment);
         }
 
-        return ctx.TryWriteUInt32(optParam, FiberOptSignature)
+        return TryWriteUInt32(ctx, optParam, FiberOptSignature)
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn(FiberErrorInvalid);
+            : SetReturn(ctx, FiberErrorInvalid);
     }
 
     [SysAbiExport(
@@ -127,24 +127,24 @@ public static class FiberExports
         var fiber = ctx[CpuRegister.Rdi];
         if (!TryValidateFiber(ctx, fiber, out var error))
         {
-            return ctx.SetReturn(error);
+            return SetReturn(ctx, error);
         }
 
-        if (!ctx.TryReadUInt32(fiber + FiberStateOffset, out var state))
+        if (!TryReadUInt32(ctx, fiber + FiberStateOffset, out var state))
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
         if (state != FiberStateIdle)
         {
-            return ctx.SetReturn(FiberErrorState);
+            return SetReturn(ctx, FiberErrorState);
         }
 
         _continuations.TryRemove(fiber, out _);
         _returnTargets.TryRemove(fiber, out _);
         _stackRanges.TryRemove(fiber, out _);
-        _ = ctx.TryWriteUInt32(fiber + FiberStateOffset, FiberStateTerminated);
+        _ = TryWriteUInt32(ctx, fiber + FiberStateOffset, FiberStateTerminated);
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -229,20 +229,20 @@ public static class FiberExports
         var fiberAddress = ResolveCurrentFiberAddress(ctx);
         if (fiberAddress == 0)
         {
-            return ctx.SetReturn(FiberErrorPermission);
+            return SetReturn(ctx, FiberErrorPermission);
         }
 
         if (GuestThreadExecution.Scheduler is not { SupportsGuestContextTransfer: true } ||
             !GuestThreadExecution.TryGetCurrentImportCallFrame(out var frame))
         {
-            return ctx.SetReturn(FiberErrorPermission);
+            return SetReturn(ctx, FiberErrorPermission);
         }
 
         var returnArgument = ctx[CpuRegister.Rdi];
         var argOnRunAddress = ctx[CpuRegister.Rsi];
-        if (argOnRunAddress != 0 && !ctx.TryWriteUInt64(argOnRunAddress, 0))
+        if (argOnRunAddress != 0 && !TryWriteUInt64(ctx, argOnRunAddress, 0))
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
         GuestCpuContinuation transferTarget;
@@ -256,7 +256,7 @@ public static class FiberExports
             if (!_returnTargets.TryRemove(fiberAddress, out var returnTarget))
             {
                 _continuations.TryRemove(fiberAddress, out _);
-                return ctx.SetReturn(FiberErrorPermission);
+                return SetReturn(ctx, FiberErrorPermission);
             }
 
             previousFiber = returnTarget.PreviousFiber;
@@ -264,10 +264,10 @@ public static class FiberExports
             {
                 if (!_continuations.TryRemove(previousFiber, out var previousContinuation) ||
                     !TryWriteResumeArgument(ctx, previousContinuation, returnArgument) ||
-                    !ctx.TryWriteUInt32(previousFiber + FiberStateOffset, FiberStateRun))
+                    !TryWriteUInt32(ctx, previousFiber + FiberStateOffset, FiberStateRun))
                 {
                     _continuations.TryRemove(fiberAddress, out _);
-                    return ctx.SetReturn(FiberErrorState);
+                    return SetReturn(ctx, FiberErrorState);
                 }
 
                 transferTarget = previousContinuation.Context with { Rax = 0 };
@@ -278,15 +278,15 @@ public static class FiberExports
                     !TryWriteResumeArgument(ctx, returnTarget.ThreadContinuation.Value, returnArgument))
                 {
                     _continuations.TryRemove(fiberAddress, out _);
-                    return ctx.SetReturn(FiberErrorState);
+                    return SetReturn(ctx, FiberErrorState);
                 }
 
                 transferTarget = returnTarget.ThreadContinuation.Value.Context with { Rax = 0 };
             }
 
-            if (!ctx.TryWriteUInt32(fiberAddress + FiberStateOffset, FiberStateIdle))
+            if (!TryWriteUInt32(ctx, fiberAddress + FiberStateOffset, FiberStateIdle))
             {
-                return ctx.SetReturn(FiberErrorInvalid);
+                return SetReturn(ctx, FiberErrorInvalid);
             }
         }
 
@@ -296,7 +296,7 @@ public static class FiberExports
         TraceFiber(
             $"return fiber=0x{fiberAddress:X16} to=0x{previousFiber:X16} " +
             $"resume=0x{transferTarget.Rip:X16} rsp=0x{transferTarget.Rsp:X16} arg=0x{returnArgument:X16}");
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -309,18 +309,18 @@ public static class FiberExports
         var outAddress = ctx[CpuRegister.Rdi];
         if (outAddress == 0)
         {
-            return ctx.SetReturn(FiberErrorNull);
+            return SetReturn(ctx, FiberErrorNull);
         }
 
         var fiberAddress = ResolveCurrentFiberAddress(ctx);
         if (fiberAddress == 0)
         {
-            return ctx.SetReturn(FiberErrorPermission);
+            return SetReturn(ctx, FiberErrorPermission);
         }
 
-        return ctx.TryWriteUInt64(outAddress, fiberAddress)
+        return TryWriteUInt64(ctx, outAddress, fiberAddress)
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn(FiberErrorInvalid);
+            : SetReturn(ctx, FiberErrorInvalid);
     }
 
     [SysAbiExport(
@@ -334,35 +334,35 @@ public static class FiberExports
         var info = ctx[CpuRegister.Rsi];
         if (info == 0)
         {
-            return ctx.SetReturn(FiberErrorNull);
+            return SetReturn(ctx, FiberErrorNull);
         }
 
         if (!TryValidateFiber(ctx, fiber, out var error))
         {
-            return ctx.SetReturn(error);
+            return SetReturn(ctx, error);
         }
 
-        if (!ctx.TryReadUInt64(info, out var size) || size != FiberInfoSize)
+        if (!TryReadUInt64(ctx, info, out var size) || size != FiberInfoSize)
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
         if (!TryReadFiberFields(ctx, fiber, out var fields))
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
-        if (!ctx.TryWriteUInt64(info + 8, fields.Entry) ||
+        if (!TryWriteUInt64(ctx, info + 8, fields.Entry) ||
-            !ctx.TryWriteUInt64(info + 16, fields.ArgOnInitialize) ||
+            !TryWriteUInt64(ctx, info + 16, fields.ArgOnInitialize) ||
-            !ctx.TryWriteUInt64(info + 24, fields.ContextAddress) ||
+            !TryWriteUInt64(ctx, info + 24, fields.ContextAddress) ||
-            !ctx.TryWriteUInt64(info + 32, fields.ContextSize) ||
+            !TryWriteUInt64(ctx, info + 32, fields.ContextSize) ||
             !TryWriteName(ctx, info + 40, fields.Name) ||
-            !ctx.TryWriteUInt64(info + 72, ulong.MaxValue))
+            !TryWriteUInt64(ctx, info + 72, ulong.MaxValue))
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -376,22 +376,22 @@ public static class FiberExports
         var nameAddress = ctx[CpuRegister.Rsi];
         if (!TryValidateFiber(ctx, fiber, out var error))
         {
-            return ctx.SetReturn(error);
+            return SetReturn(ctx, error);
         }
 
         if (nameAddress == 0)
         {
-            return ctx.SetReturn(FiberErrorNull);
+            return SetReturn(ctx, FiberErrorNull);
         }
 
-        if (!ctx.TryReadNullTerminatedUtf8(nameAddress, MaxNameLength + 1, out var name))
+        if (!TryReadNullTerminatedUtf8(ctx, nameAddress, MaxNameLength + 1, out var name))
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
         return TryWriteName(ctx, fiber + FiberNameOffset, name)
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn(FiberErrorInvalid);
+            : SetReturn(ctx, FiberErrorInvalid);
     }
 
     [SysAbiExport(
@@ -403,12 +403,12 @@ public static class FiberExports
     {
         if (ctx[CpuRegister.Rdi] != 0)
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
         return Interlocked.Exchange(ref _contextSizeCheck, 1) == 0
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn(FiberErrorState);
+            : SetReturn(ctx, FiberErrorState);
     }
 
     [SysAbiExport(
@@ -419,8 +419,8 @@ public static class FiberExports
     public static int FiberStopContextSizeCheck(CpuContext ctx)
     {
         return Interlocked.Exchange(ref _contextSizeCheck, 0) == 1
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn(FiberErrorState);
+            : SetReturn(ctx, FiberErrorState);
     }
 
     [SysAbiExport(
@@ -433,17 +433,17 @@ public static class FiberExports
         var outAddress = ctx[CpuRegister.Rdi];
         if (outAddress == 0)
         {
-            return ctx.SetReturn(FiberErrorNull);
+            return SetReturn(ctx, FiberErrorNull);
         }
 
         if (ResolveCurrentFiberAddress(ctx) == 0)
         {
-            return ctx.SetReturn(FiberErrorPermission);
+            return SetReturn(ctx, FiberErrorPermission);
         }
 
-        return ctx.TryWriteUInt64(outAddress, ctx[CpuRegister.Rbp])
+        return TryWriteUInt64(ctx, outAddress, ctx[CpuRegister.Rbp])
-            ? ctx.SetReturn(0)
+            ? SetReturn(ctx, 0)
-            : ctx.SetReturn(FiberErrorInvalid);
+            : SetReturn(ctx, FiberErrorInvalid);
     }
 
     private static int FiberInitializeCore(
@@ -459,37 +459,37 @@ public static class FiberExports
     {
         if (fiber == 0 || nameAddress == 0 || entry == 0)
         {
-            return ctx.SetReturn(FiberErrorNull);
+            return SetReturn(ctx, FiberErrorNull);
         }
 
         if ((fiber & 7) != 0 ||
             (contextAddress & 15) != 0 ||
             (optParam & 7) != 0)
         {
-            return ctx.SetReturn(FiberErrorAlignment);
+            return SetReturn(ctx, FiberErrorAlignment);
         }
 
         if (contextSize != 0 && contextSize < FiberContextMinimumSize)
         {
-            return ctx.SetReturn(FiberErrorRange);
+            return SetReturn(ctx, FiberErrorRange);
         }
 
         if ((contextSize & 15) != 0 ||
             (contextAddress == 0 && contextSize != 0) ||
             (contextAddress != 0 && contextSize == 0))
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
         if (optParam != 0 &&
-            (!ctx.TryReadUInt32(optParam, out var optMagic) || optMagic != FiberOptSignature))
+            (!TryReadUInt32(ctx, optParam, out var optMagic) || optMagic != FiberOptSignature))
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
-        if (!ctx.TryReadNullTerminatedUtf8(nameAddress, MaxNameLength + 1, out var name))
+        if (!TryReadNullTerminatedUtf8(ctx, nameAddress, MaxNameLength + 1, out var name))
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
         if (Volatile.Read(ref _contextSizeCheck) != 0)
@@ -497,27 +497,27 @@ public static class FiberExports
             flags |= FiberFlagContextSizeCheck;
         }
 
-        if (!ctx.TryWriteUInt32(fiber + FiberMagicStartOffset, FiberSignature0) ||
+        if (!TryWriteUInt32(ctx, fiber + FiberMagicStartOffset, FiberSignature0) ||
-            !ctx.TryWriteUInt32(fiber + FiberStateOffset, FiberStateIdle) ||
+            !TryWriteUInt32(ctx, fiber + FiberStateOffset, FiberStateIdle) ||
-            !ctx.TryWriteUInt64(fiber + FiberEntryOffset, entry) ||
+            !TryWriteUInt64(ctx, fiber + FiberEntryOffset, entry) ||
-            !ctx.TryWriteUInt64(fiber + FiberArgOnInitializeOffset, argOnInitialize) ||
+            !TryWriteUInt64(ctx, fiber + FiberArgOnInitializeOffset, argOnInitialize) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextAddressOffset, contextAddress) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextAddressOffset, contextAddress) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextSizeOffset, contextSize) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextSizeOffset, contextSize) ||
             !TryWriteName(ctx, fiber + FiberNameOffset, name) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextPointerOffset, 0) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextPointerOffset, 0) ||
-            !ctx.TryWriteUInt32(fiber + FiberFlagsOffset, flags) ||
+            !TryWriteUInt32(ctx, fiber + FiberFlagsOffset, flags) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextStartOffset, contextAddress) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextStartOffset, contextAddress) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextEndOffset, contextAddress == 0 ? 0 : contextAddress + contextSize) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextEndOffset, contextAddress == 0 ? 0 : contextAddress + contextSize) ||
-            !ctx.TryWriteUInt32(fiber + FiberMagicEndOffset, FiberSignature1))
+            !TryWriteUInt32(ctx, fiber + FiberMagicEndOffset, FiberSignature1))
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
         if (contextAddress != 0)
         {
-            if (!ctx.TryWriteUInt64(contextAddress, FiberStackSignature))
+            if (!TryWriteUInt64(ctx, contextAddress, FiberStackSignature))
             {
-                return ctx.SetReturn(FiberErrorInvalid);
+                return SetReturn(ctx, FiberErrorInvalid);
             }
 
             if ((flags & FiberFlagContextSizeCheck) != 0)
@@ -532,7 +532,7 @@ public static class FiberExports
         }
 
         TraceFiber($"init fiber=0x{fiber:X16} entry=0x{entry:X16} ctx=0x{contextAddress:X16} size=0x{contextSize:X} name='{name}'");
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     private static int FiberRunCore(
@@ -547,12 +547,12 @@ public static class FiberExports
     {
         if (!TryValidateFiber(ctx, fiber, out var error))
         {
-            return ctx.SetReturn(error);
+            return SetReturn(ctx, error);
         }
 
         if (!TryReadFiberFields(ctx, fiber, out var fields))
         {
-            return ctx.SetReturn(FiberErrorInvalid);
+            return SetReturn(ctx, FiberErrorInvalid);
         }
 
         if (attachContextAddress != 0 || attachContextSize != 0)
@@ -560,7 +560,7 @@ public static class FiberExports
             var attachResult = AttachContext(ctx, fiber, attachContextAddress, attachContextSize, ref fields);
             if (attachResult != 0)
             {
-                return ctx.SetReturn(attachResult);
+                return SetReturn(ctx, attachResult);
             }
         }
 
@@ -568,16 +568,16 @@ public static class FiberExports
         if ((isSwitch && previousFiber == 0) ||
             (!isSwitch && previousFiber != 0))
         {
-            return ctx.SetReturn(FiberErrorPermission);
+            return SetReturn(ctx, FiberErrorPermission);
         }
         if (previousFiber == fiber)
         {
-            return ctx.SetReturn(FiberErrorState);
+            return SetReturn(ctx, FiberErrorState);
         }
         if (GuestThreadExecution.Scheduler is not { SupportsGuestContextTransfer: true } ||
             !GuestThreadExecution.TryGetCurrentImportCallFrame(out var frame))
         {
-            return ctx.SetReturn(FiberErrorPermission);
+            return SetReturn(ctx, FiberErrorPermission);
         }
 
         GuestCpuContinuation transferTarget;
@@ -586,12 +586,12 @@ public static class FiberExports
         {
             if (!TryReadFiberFields(ctx, fiber, out fields))
             {
-                return ctx.SetReturn(FiberErrorInvalid);
+                return SetReturn(ctx, FiberErrorInvalid);
             }
             if (fields.State != FiberStateIdle)
             {
                 TraceFiber($"run-state-error reason={reason} fiber=0x{fiber:X16} state=0x{fields.State:X8}");
-                return ctx.SetReturn(FiberErrorState);
+                return SetReturn(ctx, FiberErrorState);
             }
 
             FiberContinuation targetContinuation;
@@ -602,12 +602,12 @@ public static class FiberExports
             }
             else if (!TryCreateInitialContinuation(ctx, fields, argOnRun, out targetContinuation))
             {
-                return ctx.SetReturn(FiberErrorInvalid);
+                return SetReturn(ctx, FiberErrorInvalid);
             }
 
             if (resumed && !TryWriteResumeArgument(ctx, targetContinuation, argOnRun))
             {
-                return ctx.SetReturn(FiberErrorInvalid);
+                return SetReturn(ctx, FiberErrorInvalid);
             }
 
             var callerContinuation = new FiberContinuation(
@@ -616,11 +616,11 @@ public static class FiberExports
 
             if (previousFiber != 0)
             {
-                if (!ctx.TryReadUInt32(previousFiber + FiberStateOffset, out var previousState) ||
+                if (!TryReadUInt32(ctx, previousFiber + FiberStateOffset, out var previousState) ||
                     previousState != FiberStateRun ||
-                    !ctx.TryWriteUInt32(previousFiber + FiberStateOffset, FiberStateIdle))
+                    !TryWriteUInt32(ctx, previousFiber + FiberStateOffset, FiberStateIdle))
                 {
-                    return ctx.SetReturn(FiberErrorState);
+                    return SetReturn(ctx, FiberErrorState);
                 }
 
                 _continuations[previousFiber] = callerContinuation;
@@ -631,15 +631,15 @@ public static class FiberExports
                 _returnTargets[fiber] = new FiberReturnTarget(0, callerContinuation);
             }
 
-            if (!ctx.TryWriteUInt32(fiber + FiberStateOffset, FiberStateRun))
+            if (!TryWriteUInt32(ctx, fiber + FiberStateOffset, FiberStateRun))
             {
                 if (previousFiber != 0)
                 {
                     _continuations.TryRemove(previousFiber, out _);
-                    _ = ctx.TryWriteUInt32(previousFiber + FiberStateOffset, FiberStateRun);
+                    _ = TryWriteUInt32(ctx, previousFiber + FiberStateOffset, FiberStateRun);
                 }
                 _returnTargets.TryRemove(fiber, out _);
-                return ctx.SetReturn(FiberErrorInvalid);
+                return SetReturn(ctx, FiberErrorInvalid);
             }
 
             if (resumed)
@@ -656,7 +656,7 @@ public static class FiberExports
         TraceFiber(
             $"transfer reason={reason} from=0x{previousFiber:X16} to=0x{fiber:X16} resume={resumed} " +
             $"rip=0x{transferTarget.Rip:X16} rsp=0x{transferTarget.Rsp:X16} arg=0x{argOnRun:X16}");
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     private static bool TryCreateInitialContinuation(
@@ -673,7 +673,7 @@ public static class FiberExports
 
         var stackEnd = fields.ContextAddress + fields.ContextSize;
         var entryRsp = (stackEnd & ~15UL) - sizeof(ulong);
-        if (!ctx.TryWriteUInt64(entryRsp, 0))
+        if (!TryWriteUInt64(ctx, entryRsp, 0))
         {
             return false;
         }
@@ -708,7 +708,7 @@ public static class FiberExports
         FiberContinuation continuation,
         ulong argument) =>
         continuation.ArgOnRunAddress == 0 ||
-        ctx.TryWriteUInt64(continuation.ArgOnRunAddress, argument);
+        TryWriteUInt64(ctx, continuation.ArgOnRunAddress, argument);
 
     private static GuestCpuContinuation CaptureContinuation(
         CpuContext ctx,
@@ -779,11 +779,11 @@ public static class FiberExports
             return FiberErrorInvalid;
         }
 
-        if (!ctx.TryWriteUInt64(fiber + FiberContextAddressOffset, contextAddress) ||
+        if (!TryWriteUInt64(ctx, fiber + FiberContextAddressOffset, contextAddress) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextSizeOffset, contextSize) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextSizeOffset, contextSize) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextStartOffset, contextAddress) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextStartOffset, contextAddress) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextEndOffset, contextAddress + contextSize) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextEndOffset, contextAddress + contextSize) ||
-            !ctx.TryWriteUInt64(contextAddress, FiberStackSignature))
+            !TryWriteUInt64(ctx, contextAddress, FiberStackSignature))
         {
             return FiberErrorInvalid;
         }
@@ -839,8 +839,8 @@ public static class FiberExports
             return false;
         }
 
-        if (!ctx.TryReadUInt32(fiber + FiberMagicStartOffset, out var magicStart) ||
+        if (!TryReadUInt32(ctx, fiber + FiberMagicStartOffset, out var magicStart) ||
-            !ctx.TryReadUInt32(fiber + FiberMagicEndOffset, out var magicEnd) ||
+            !TryReadUInt32(ctx, fiber + FiberMagicEndOffset, out var magicEnd) ||
             magicStart != FiberSignature0 ||
             magicEnd != FiberSignature1)
         {
@@ -855,12 +855,12 @@ public static class FiberExports
     private static bool TryReadFiberFields(CpuContext ctx, ulong fiber, out FiberFields fields)
     {
         fields = default;
-        if (!ctx.TryReadUInt32(fiber + FiberStateOffset, out var state) ||
+        if (!TryReadUInt32(ctx, fiber + FiberStateOffset, out var state) ||
-            !ctx.TryReadUInt64(fiber + FiberEntryOffset, out var entry) ||
+            !TryReadUInt64(ctx, fiber + FiberEntryOffset, out var entry) ||
-            !ctx.TryReadUInt64(fiber + FiberArgOnInitializeOffset, out var argOnInitialize) ||
+            !TryReadUInt64(ctx, fiber + FiberArgOnInitializeOffset, out var argOnInitialize) ||
-            !ctx.TryReadUInt64(fiber + FiberContextAddressOffset, out var contextAddress) ||
+            !TryReadUInt64(ctx, fiber + FiberContextAddressOffset, out var contextAddress) ||
-            !ctx.TryReadUInt64(fiber + FiberContextSizeOffset, out var contextSize) ||
+            !TryReadUInt64(ctx, fiber + FiberContextSizeOffset, out var contextSize) ||
-            !ctx.TryReadUInt32(fiber + FiberFlagsOffset, out var flags) ||
+            !TryReadUInt32(ctx, fiber + FiberFlagsOffset, out var flags) ||
             !TryReadInlineName(ctx, fiber + FiberNameOffset, out var name))
         {
             return false;
@@ -898,6 +898,46 @@ public static class FiberExports
         return 0;
     }
 
+    private static bool TryReadUInt32(CpuContext ctx, ulong address, out uint value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+        if (!ctx.Memory.TryRead(address, buffer))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt32LittleEndian(buffer);
+        return true;
+    }
+
+    private static bool TryWriteUInt32(CpuContext ctx, ulong address, uint value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+        BinaryPrimitives.WriteUInt32LittleEndian(buffer, value);
+        return ctx.Memory.TryWrite(address, buffer);
+    }
+
+    private static bool TryReadUInt64(CpuContext ctx, ulong address, out ulong value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(ulong)];
+        if (!ctx.Memory.TryRead(address, buffer))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt64LittleEndian(buffer);
+        return true;
+    }
+
+    private static bool TryWriteUInt64(CpuContext ctx, ulong address, ulong value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(ulong)];
+        BinaryPrimitives.WriteUInt64LittleEndian(buffer, value);
+        return ctx.Memory.TryWrite(address, buffer);
+    }
+
     private static bool TryWriteName(CpuContext ctx, ulong address, string name)
     {
         Span<byte> buffer = stackalloc byte[MaxNameLength + 1];
@@ -925,6 +965,37 @@ public static class FiberExports
         return true;
     }
 
+    private static bool TryReadNullTerminatedUtf8(CpuContext ctx, ulong address, int capacity, out string value)
+    {
+        var bytes = new byte[capacity];
+        for (var index = 0; index < bytes.Length; index++)
+        {
+            Span<byte> current = stackalloc byte[1];
+            if (!ctx.Memory.TryRead(address + (ulong)index, current))
+            {
+                value = string.Empty;
+                return false;
+            }
+
+            if (current[0] == 0)
+            {
+                value = Encoding.UTF8.GetString(bytes, 0, index);
+                return true;
+            }
+
+            bytes[index] = current[0];
+        }
+
+        value = Encoding.UTF8.GetString(bytes);
+        return true;
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
+    }
+
     private static void TraceFiber(string message)
     {
         if (string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_FIBER"), "1", StringComparison.Ordinal))

src/SharpEmu.Libs/Ime/ImeExports.cs

@@ -1,46 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using SharpEmu.HLE;
-
-namespace SharpEmu.Libs.Ime;
-
-public static class ImeExports
-{
-    // Quake (KEX) calls this from its main loop and from the audio bring-up path with
-    // an event-handler pointer. No IME session ever exists here, so report success
-    // without invoking the handler ("no pending IME events"). This NID was previously
-    // misbound as an sceNgs2VoiceControl alias, which fed the game NGS2 errors.
-    [SysAbiExport(
-        Nid = "-4GCfYdNF1s",
-        ExportName = "sceImeUpdate",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceIme")]
-    public static int ImeUpdate(CpuContext ctx)
-    {
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    [SysAbiExport(
-        Nid = "eaFXjfJv3xs",
-        ExportName = "sceImeKeyboardOpen",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceIme")]
-    public static int ImeKeyboardOpen(CpuContext ctx)
-    {
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    [SysAbiExport(
-        Nid = "dKadqZFgKKQ",
-        ExportName = "sceImeKeyboardGetResourceId",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceIme")]
-    public static int ImeKeyboardGetResourceId(CpuContext ctx)
-    {
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-}

src/SharpEmu.Libs/Kernel/KernelAprCompatExports.cs

@@ -3,6 +3,7 @@
 
 using SharpEmu.HLE;
 using SharpEmu.Libs.Ampr;
+using System.Buffers.Binary;
 using System.Collections.Concurrent;
 using System.Threading;
 
@@ -49,7 +50,7 @@ public static class KernelAprCompatExports
             return completionResult;
         }
 
-        if (outSubmissionId != 0 && !ctx.TryWriteUInt32(outSubmissionId, submissionId))
+        if (outSubmissionId != 0 && !TryWriteUInt32(ctx, outSubmissionId, submissionId))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -140,7 +141,7 @@ public static class KernelAprCompatExports
             return completionResult;
         }
 
-        if (!ctx.TryWriteUInt32(outSubmissionId, submissionId))
+        if (!TryWriteUInt32(ctx, outSubmissionId, submissionId))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -149,19 +150,6 @@ public static class KernelAprCompatExports
         return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
 
-    // Success stub: the argument layout is unknown and callers tolerate the
-    // empty answer (Quake streams fine), so no output payload is written until
-    // the real signature is reversed.
-    [SysAbiExport(
-        Nid = "WvEu7yl3Ivg",
-        ExportName = "sceKernelAprGetFileSize",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int KernelAprGetFileSize(CpuContext ctx)
-    {
-        return ctx.SetReturn(0);
-    }
-
     private static bool TryWriteAprResult(CpuContext ctx, ulong resultAddress)
     {
         Span<byte> result = stackalloc byte[sizeof(ulong)];
@@ -190,6 +178,13 @@ public static class KernelAprCompatExports
         return tag is 0x0C or 0x10;
     }
 
+    private static bool TryWriteUInt32(CpuContext ctx, ulong address, uint value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+        BinaryPrimitives.WriteUInt32LittleEndian(buffer, value);
+        return ctx.Memory.TryWrite(address, buffer);
+    }
+
     private static void TraceApr(
         CpuContext ctx,
         string operation,

src/SharpEmu.Libs/Kernel/KernelEventFlagCompatExports.cs

@@ -1,6 +1,7 @@
 // Copyright (C) 2026 SharpEmu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+using System.Buffers.Binary;
 using System.Collections.Concurrent;
 using System.Text;
 using SharpEmu.HLE;
@@ -51,17 +52,17 @@ public static class KernelEventFlagCompatExports
             optionAddress != 0 ||
             !IsValidAttributes(attributes))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
-        if (!ctx.TryReadNullTerminatedUtf8(nameAddress, MaxEventFlagNameLength + 1, out var name))
+        if (!TryReadNullTerminatedUtf8(ctx, nameAddress, MaxEventFlagNameLength + 1, out var name))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         if (Encoding.UTF8.GetByteCount(name) > MaxEventFlagNameLength)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         var handle = unchecked((ulong)Interlocked.Increment(ref _nextEventFlagHandle));
@@ -75,11 +76,11 @@ public static class KernelEventFlagCompatExports
         if (!ctx.TryWriteUInt64(outAddress, handle))
         {
             _eventFlags.TryRemove(handle, out _);
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         TraceEventFlag($"create handle=0x{handle:X16} name='{name}' attr=0x{attributes:X2} bits=0x{initialPattern:X16}");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -92,7 +93,7 @@ public static class KernelEventFlagCompatExports
         var handle = ctx[CpuRegister.Rdi];
         if (!_eventFlags.TryRemove(handle, out var state))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
         lock (state.Gate)
@@ -101,7 +102,7 @@ public static class KernelEventFlagCompatExports
         }
 
         TraceEventFlag($"delete handle=0x{handle:X16} name='{state.Name}'");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -116,7 +117,7 @@ public static class KernelEventFlagCompatExports
         var returnRip = GetCurrentReturnRip();
         if (!_eventFlags.TryGetValue(handle, out var state))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
         lock (state.Gate)
@@ -127,7 +128,7 @@ public static class KernelEventFlagCompatExports
         }
 
         _ = GuestThreadExecution.Scheduler?.WakeBlockedThreads(GetEventFlagWakeKey(handle));
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -141,7 +142,7 @@ public static class KernelEventFlagCompatExports
         var pattern = ctx[CpuRegister.Rsi];
         if (!_eventFlags.TryGetValue(handle, out var state))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
         lock (state.Gate)
@@ -150,7 +151,7 @@ public static class KernelEventFlagCompatExports
             TraceEventFlag($"clear handle=0x{handle:X16} mask=0x{pattern:X16} bits=0x{state.Bits:X16}");
         }
 
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -167,29 +168,29 @@ public static class KernelEventFlagCompatExports
 
         if (!_eventFlags.TryGetValue(handle, out var state))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
         if (pattern == 0 || !IsValidWaitMode(waitMode))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         lock (state.Gate)
         {
             if (!TryWriteResultPattern(ctx, resultAddress, state.Bits))
             {
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
 
             if (!IsSatisfied(state.Bits, pattern, waitMode))
             {
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_BUSY);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_BUSY);
             }
 
             ApplyClearMode(state, pattern, waitMode);
             TraceEventFlag($"poll handle=0x{handle:X16} pattern=0x{pattern:X16} mode=0x{waitMode:X2} bits=0x{state.Bits:X16}");
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
         }
     }
 
@@ -209,18 +210,18 @@ public static class KernelEventFlagCompatExports
 
         if (!_eventFlags.TryGetValue(handle, out var state))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
         if (pattern == 0 || !IsValidWaitMode(waitMode))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         uint timeoutUsec = 0;
-        if (timeoutAddress != 0 && !ctx.TryReadUInt32(timeoutAddress, out timeoutUsec))
+        if (timeoutAddress != 0 && !TryReadUInt32(ctx, timeoutAddress, out timeoutUsec))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         Monitor.Enter(state.Gate);
@@ -228,15 +229,15 @@ public static class KernelEventFlagCompatExports
         {
             if (TryCompleteSatisfiedWait(ctx, state, pattern, waitMode, resultAddress, out var immediateWaitResult))
             {
-                return ctx.SetReturn(immediateWaitResult);
+                return SetReturn(ctx, immediateWaitResult);
             }
 
             if (timeoutAddress != 0)
             {
-                _ = ctx.TryWriteUInt32(timeoutAddress, 0);
+                _ = TryWriteUInt32(ctx, timeoutAddress, 0);
                 _ = TryWriteResultPattern(ctx, resultAddress, state.Bits);
                 TraceEventFlag($"wait-timeout handle=0x{handle:X16} pattern=0x{pattern:X16} timeout={timeoutUsec} ret=0x{returnRip:X16}");
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_TIMED_OUT);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_TIMED_OUT);
             }
 
             var currentGuestThread = GuestThreadExecution.CurrentGuestThreadHandle;
@@ -271,7 +272,7 @@ public static class KernelEventFlagCompatExports
                 var scheduler = GuestThreadExecution.Scheduler;
                 if (scheduler is null)
                 {
-                    return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_TRY_AGAIN);
+                    return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_TRY_AGAIN);
                 }
 
                 state.WaitingThreads++;
@@ -296,7 +297,7 @@ public static class KernelEventFlagCompatExports
                             state.WaitingThreads = Math.Max(0, state.WaitingThreads - 1);
                             releaseWaiter = false;
                             TraceEventFlag($"wait-wake handle=0x{handle:X16} pattern=0x{pattern:X16} bits=0x{state.Bits:X16} waiters={state.WaitingThreads} ret=0x{returnRip:X16}");
-                            return ctx.SetReturn(pumpedWaitResult);
+                            return SetReturn(ctx, pumpedWaitResult);
                         }
 
                         Monitor.Wait(state.Gate, HostWaitPumpMilliseconds);
@@ -313,7 +314,7 @@ public static class KernelEventFlagCompatExports
 
             state.WaitingThreads++;
             TraceEventFlag($"wait-block handle=0x{handle:X16} pattern=0x{pattern:X16} waiters={state.WaitingThreads} guest_thread=0x{currentGuestThread:X16} fiber=0x{currentFiber:X16} managed={managedThread} ret=0x{returnRip:X16}");
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
         }
         finally
         {
@@ -333,15 +334,15 @@ public static class KernelEventFlagCompatExports
         var waiterCountAddress = ctx[CpuRegister.Rdx];
         if (!_eventFlags.TryGetValue(handle, out var state))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
         lock (state.Gate)
         {
             if (waiterCountAddress != 0 &&
-                !ctx.TryWriteUInt32(waiterCountAddress, unchecked((uint)state.WaitingThreads)))
+                !TryWriteUInt32(ctx, waiterCountAddress, unchecked((uint)state.WaitingThreads)))
             {
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
 
             state.Bits = setPattern;
@@ -350,7 +351,7 @@ public static class KernelEventFlagCompatExports
             TraceEventFlag($"cancel handle=0x{handle:X16} bits=0x{setPattern:X16}");
         }
 
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     private static bool IsValidAttributes(uint attributes)
@@ -452,6 +453,84 @@ public static class KernelEventFlagCompatExports
     private static bool TryWriteResultPattern(CpuContext ctx, ulong address, ulong bits) =>
         address == 0 || ctx.TryWriteUInt64(address, bits);
 
+    private static bool TryReadUInt32(CpuContext ctx, ulong address, out uint value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+        if (!ctx.Memory.TryRead(address, buffer))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt32LittleEndian(buffer);
+        return true;
+    }
+
+    private static bool TryReadUInt64(CpuContext ctx, ulong address, out ulong value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(ulong)];
+        if (!ctx.Memory.TryRead(address, buffer))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt64LittleEndian(buffer);
+        return true;
+    }
+
+    private static bool TryReadByte(CpuContext ctx, ulong address, out byte value)
+    {
+        Span<byte> buffer = stackalloc byte[1];
+        if (!ctx.Memory.TryRead(address, buffer))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = buffer[0];
+        return true;
+    }
+
+    private static bool TryWriteUInt32(CpuContext ctx, ulong address, uint value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+        BinaryPrimitives.WriteUInt32LittleEndian(buffer, value);
+        return ctx.Memory.TryWrite(address, buffer);
+    }
+
+    private static bool TryReadNullTerminatedUtf8(CpuContext ctx, ulong address, int capacity, out string value)
+    {
+        var bytes = new byte[capacity];
+        for (var index = 0; index < bytes.Length; index++)
+        {
+            Span<byte> current = stackalloc byte[1];
+            if (!ctx.Memory.TryRead(address + (ulong)index, current))
+            {
+                value = string.Empty;
+                return false;
+            }
+
+            if (current[0] == 0)
+            {
+                value = Encoding.UTF8.GetString(bytes, 0, index);
+                return true;
+            }
+
+            bytes[index] = current[0];
+        }
+
+        value = Encoding.UTF8.GetString(bytes);
+        return true;
+    }
+
+    private static int SetReturn(CpuContext ctx, OrbisGen2Result result)
+    {
+        var value = (int)result;
+        ctx[CpuRegister.Rax] = unchecked((ulong)value);
+        return value;
+    }
+
     private static void TraceEventFlag(string message)
     {
         if (string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_EVENT_FLAG"), "1", StringComparison.Ordinal))
@@ -535,7 +614,7 @@ public static class KernelEventFlagCompatExports
 
     private static void AppendByte(StringBuilder builder, CpuContext ctx, ulong address, string name)
     {
-        if (ctx.TryReadByte(address, out var value))
+        if (TryReadByte(ctx, address, out var value))
         {
             builder.Append($" {name}=0x{value:X2}");
         }
@@ -543,7 +622,7 @@ public static class KernelEventFlagCompatExports
 
     private static void AppendUInt32(StringBuilder builder, CpuContext ctx, ulong address, string name)
     {
-        if (ctx.TryReadUInt32(address, out var value))
+        if (TryReadUInt32(ctx, address, out var value))
         {
             builder.Append($" {name}=0x{value:X8}");
         }
@@ -551,7 +630,7 @@ public static class KernelEventFlagCompatExports
 
     private static void AppendUInt64(StringBuilder builder, CpuContext ctx, ulong address, string name)
     {
-        if (ctx.TryReadUInt64(address, out var value))
+        if (TryReadUInt64(ctx, address, out var value))
         {
             builder.Append($" {name}=0x{value:X16}");
         }

src/SharpEmu.Libs/Kernel/KernelEventQueueCompatExports.cs

@@ -276,24 +276,8 @@ public static class KernelEventQueueCompatExports
         var outCountAddress = ctx[CpuRegister.Rcx];
         var timeoutAddress = ctx[CpuRegister.R8];
 
-        if (!IsValidEqueue(handle))
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
-        }
-
-        if (eventsAddress == 0 || eventCapacity < 1)
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-        }
-
-        uint timeoutUsec = 0;
-        if (timeoutAddress != 0 && !ctx.TryReadUInt32(timeoutAddress, out timeoutUsec))
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
-        }
-
         var deliveredCount = DequeueEvents(ctx, handle, eventsAddress, eventCapacity);
-        if (outCountAddress != 0 && !ctx.TryWriteUInt32(outCountAddress, (uint)deliveredCount))
+        if (outCountAddress != 0 && !TryWriteUInt32(ctx, outCountAddress, (uint)deliveredCount))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -316,41 +300,6 @@ public static class KernelEventQueueCompatExports
             return (int)OrbisGen2Result.ORBIS_GEN2_OK;
         }
 
-        if (timeoutAddress != 0 && ctx.TryReadUInt64(timeoutAddress, out var timeoutRaw))
-        {
-            var timeoutMicros = timeoutRaw & 0xFFFF_FFFFUL;
-            var deadline = Environment.TickCount64 +
-                Math.Max(1L, (long)Math.Min(timeoutMicros / 1000, int.MaxValue));
-            lock (_eventQueueGate)
-            {
-                while (!HasPendingEvents(handle))
-                {
-                    var remaining = deadline - Environment.TickCount64;
-                    if (remaining <= 0)
-                    {
-                        break;
-                    }
-
-                    Monitor.Wait(_eventQueueGate, (int)Math.Min(remaining, 100));
-                }
-            }
-
-            deliveredCount = DequeueEvents(ctx, handle, eventsAddress, eventCapacity);
-            if (outCountAddress != 0 && !ctx.TryWriteUInt32(outCountAddress, (uint)deliveredCount))
-            {
-                return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
-            }
-
-            if (deliveredCount > 0)
-            {
-                TraceEventQueue(ctx, "wait-timed-deliver", handle);
-                return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-            }
-
-            TraceEventQueue(ctx, "wait-timeout", handle);
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_TIMED_OUT;
-        }
-
         TraceEventQueue(ctx, "wait", handle);
         return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
@@ -381,7 +330,6 @@ public static class KernelEventQueueCompatExports
 
             queue.AddLast(queuedEvent);
             queued = true;
-            Monitor.PulseAll(_eventQueueGate);
         }
 
         if (queued)
@@ -541,14 +489,12 @@ public static class KernelEventQueueCompatExports
         ulong outCountAddress)
     {
         var deliveredCount = DequeueEvents(ctx, handle, eventsAddress, eventCapacity);
-        if (outCountAddress != 0 && !ctx.TryWriteUInt32(outCountAddress, (uint)deliveredCount))
+        if (outCountAddress != 0 && !TryWriteUInt32(ctx, outCountAddress, (uint)deliveredCount))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
 
-        return deliveredCount > 0
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-            ? (int)OrbisGen2Result.ORBIS_GEN2_OK
-            : (int)OrbisGen2Result.ORBIS_GEN2_ERROR_TIMED_OUT;
     }
 
     private static bool HasPendingEvents(ulong handle)
@@ -654,8 +600,16 @@ public static class KernelEventQueueCompatExports
             return;
         }
 
-        _ = ctx.TryReadUInt64(ctx[CpuRegister.Rsp], out ulong returnRip);
+        var returnRip = 0UL;
+        _ = ctx.TryReadUInt64(ctx[CpuRegister.Rsp], out returnRip);
         Console.Error.WriteLine(
             $"[LOADER][TRACE] equeue.{operation}: handle=0x{handle:X16} rsi=0x{ctx[CpuRegister.Rsi]:X16} rdx=0x{ctx[CpuRegister.Rdx]:X16} ret=0x{returnRip:X16}");
     }
+
+    private static bool TryWriteUInt32(CpuContext ctx, ulong address, uint value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+        BinaryPrimitives.WriteUInt32LittleEndian(buffer, value);
+        return ctx.Memory.TryWrite(address, buffer);
+    }
 }

src/SharpEmu.Libs/Kernel/KernelExceptionCompatExports.cs

@@ -1,65 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using SharpEmu.HLE;
-
-namespace SharpEmu.Libs.Kernel;
-
-public static class KernelExceptionCompatExports
-{
-    private static readonly HashSet<int> AllowedSignals = new() { 1, 4, 8, 10, 11, 30 };
-    private static readonly Dictionary<int, ulong> _installedHandlers = new();
-    private static readonly object _gate = new();
-
-    [SysAbiExport(
-        Nid = "WkwEd3N7w0Y",
-        ExportName = "sceKernelInstallExceptionHandler",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int InstallExceptionHandler(CpuContext ctx)
-    {
-        var signum = unchecked((int)ctx[CpuRegister.Rdi]);
-        var handler = ctx[CpuRegister.Rsi];
-
-        if (!AllowedSignals.Contains(signum))
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-        }
-
-        lock (_gate)
-        {
-            if (_installedHandlers.ContainsKey(signum))
-            {
-                return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_ALREADY_EXISTS;
-            }
-
-            _installedHandlers[signum] = handler;
-        }
-
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    [SysAbiExport(
-        Nid = "Qhv5ARAoOEc",
-        ExportName = "sceKernelRemoveExceptionHandler",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int RemoveExceptionHandler(CpuContext ctx)
-    {
-        var signum = unchecked((int)ctx[CpuRegister.Rdi]);
-
-        if (!AllowedSignals.Contains(signum))
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-        }
-
-        lock (_gate)
-        {
-            _installedHandlers.Remove(signum);
-        }
-
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-}

src/SharpEmu.Libs/Kernel/KernelExports.cs

@@ -8,13 +8,12 @@ namespace SharpEmu.Libs.Kernel;
 
 public static class KernelExports
 {
+    private static int _nextFileDescriptor = 2;
     private static readonly object _cxaGate = new();
     private static readonly List<CxaDestructorEntry> _cxaDestructors = new();
     private static readonly object _coredumpGate = new();
     private static ulong _coredumpHandler;
     private static ulong _coredumpHandlerContext;
-    private const uint Gen4CompiledSdkVersion = 0x05000000;
-    private const uint Gen5CompiledSdkVersion = 0x09000000;
 
     private readonly record struct CxaDestructorEntry(
         ulong Function,
@@ -28,24 +27,7 @@ public static class KernelExports
         LibraryName = "libKernel")]
     public static int KernelGetCompiledSdkVersion(CpuContext ctx)
     {
-        var versionAddress = ctx[CpuRegister.Rdi];
+        _ = ctx;
-        if (versionAddress == 0)
-        {
-            ctx[CpuRegister.Rax] = unchecked((ulong)(int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-        }
-
-        var sdkVersion = ctx.TargetGeneration == Generation.Gen5
-            ? Gen5CompiledSdkVersion
-            : Gen4CompiledSdkVersion;
-
-        if (!ctx.TryWriteUInt32(versionAddress, sdkVersion))
-        {
-            ctx[CpuRegister.Rax] = unchecked((ulong)(int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
-        }
-
-        ctx[CpuRegister.Rax] = 0;
         return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
 
@@ -71,20 +53,12 @@ public static class KernelExports
         ExportName = "exit",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libKernel")]
-    public static int Exit(CpuContext ctx) => RequestProcessExit(ctx, "exit");
+    public static int Exit(CpuContext ctx)
-
-    [SysAbiExport(
-        Nid = "L1SBTkC+Cvw",
-        ExportName = "abort",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libc")]
-    public static int Abort(CpuContext ctx)
     {
-        // Route through the same graceful guest-entry-exit path as exit(): letting the call
+        var status = unchecked((int)ctx[CpuRegister.Rdi]);
-        // fall through to the host's native abort() does not unwind the guest thread cleanly.
+        Console.Error.WriteLine($"[LOADER][INFO] exit(status={status})");
-        Console.Error.WriteLine("[LOADER][INFO] abort() called by guest - terminating");
+        GuestThreadExecution.RequestCurrentEntryExit("exit", status);
-        GuestThreadExecution.RequestCurrentEntryExit("abort", -1);
+        ctx[CpuRegister.Rax] = unchecked((ulong)status);
-        ctx[CpuRegister.Rax] = unchecked((ulong)(-1L));
         return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
 
@@ -199,7 +173,11 @@ public static class KernelExports
         ExportName = "_exit",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libKernel")]
-    public static int UnderscoreExit(CpuContext ctx) => RequestProcessExit(ctx, "_exit");
+    public static int UnderscoreExit(CpuContext ctx)
+    {
+        _ = ctx;
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
+    }
 
     [SysAbiExport(
         Nid = "Ac86z8q7T8A",
@@ -278,14 +256,20 @@ public static class KernelExports
         ExportName = "pthread_create",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libKernel")]
-    public static int PosixPthreadCreate(CpuContext ctx) => PthreadCreate(ctx);
+    public static int PosixPthreadCreate(CpuContext ctx)
+    {
+        return PthreadCreate(ctx);
+    }
 
     [SysAbiExport(
         Nid = "Jmi+9w9u0E4",
         ExportName = "pthread_create_name_np",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libKernel")]
-    public static int PosixPthreadCreateNameNp(CpuContext ctx) => PthreadCreate(ctx);
+    public static int PosixPthreadCreateNameNp(CpuContext ctx)
+    {
+        return PthreadCreate(ctx);
+    }
 
     [SysAbiExport(
         Nid = "3kg7rT0NQIs",
@@ -362,7 +346,10 @@ public static class KernelExports
         ExportName = "pthread_join",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libKernel")]
-    public static int PosixPthreadJoin(CpuContext ctx) => PthreadJoin(ctx);
+    public static int PosixPthreadJoin(CpuContext ctx)
+    {
+        return PthreadJoin(ctx);
+    }
 
     [SysAbiExport(
         Nid = "wuCroIGjt2g",
@@ -378,13 +365,6 @@ public static class KernelExports
         LibraryName = "libKernel")]
     public static int KernelOpen(CpuContext ctx) => KernelMemoryCompatExports.KernelOpenUnderscore(ctx);
 
-    [SysAbiExport(
-        Nid = "mqQMh1zPPT8",
-        ExportName = "fstat",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libc")]
-    public static int Fstat(CpuContext ctx) => KernelMemoryCompatExports.KernelFstat(ctx);
-
     [SysAbiExport(
         Nid = "hcuQgD53UxM",
         ExportName = "printf",
@@ -451,76 +431,4 @@ public static class KernelExports
     {
         return string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_PTHREADS"), "1", StringComparison.Ordinal);
     }
-
-    private static int RequestProcessExit(CpuContext ctx, string syscallName)
-    {
-        var status = unchecked((int)ctx[CpuRegister.Rdi]);
-        Console.Error.WriteLine($"[LOADER][INFO] {syscallName}(status={status})");
-        GuestThreadExecution.RequestCurrentEntryExit(syscallName, status);
-        ctx[CpuRegister.Rax] = unchecked((ulong)status);
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    // Unidentified kernel NIDs observed at runtime; stubbed to return 0 until they are
-    // resolved against scripts/ps5_names.txt.
-    [SysAbiExport(
-        Nid = "9T2pDF2Ryqg",
-        ExportName = "sceKernelUnknown9T2p",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int KernelUnknown9T2p(CpuContext ctx) => SetZeroReturn(ctx);
-
-    [SysAbiExport(
-        Nid = "TU-d9PfIHPM",
-        ExportName = "sceKernelUnknownTU",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int KernelUnknownTU(CpuContext ctx) => SetZeroReturn(ctx);
-
-    [SysAbiExport(
-        Nid = "iWQWrwiSt8A",
-        ExportName = "sceKernelUnknowniWQW",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int KernelUnknowniWQW(CpuContext ctx) => SetZeroReturn(ctx);
-
-    [SysAbiExport(
-        Nid = "KuOmgKoqCdY",
-        ExportName = "sceKernelUnknownKuOmg",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int KernelUnknownKuOmg(CpuContext ctx) => SetZeroReturn(ctx);
-
-    [SysAbiExport(
-        Nid = "RenI1lL1WFk",
-        ExportName = "sceKernelUnknownRenI",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int KernelUnknownRenI(CpuContext ctx) => SetZeroReturn(ctx);
-
-    [SysAbiExport(
-        Nid = "pQGpHYopAIY",
-        ExportName = "sceKernelUnknownpQGp",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int KernelUnknownpQGp(CpuContext ctx) => SetZeroReturn(ctx);
-
-    [SysAbiExport(
-        Nid = "Rbvt+5Y2iEw",
-        ExportName = "sceKernelUnknownRbvt",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int KernelUnknownRbvt(CpuContext ctx) => SetZeroReturn(ctx);
-
-    // NOTE: "SHtAad20YYM"/"DIxvoy7Ngvk" are sce::Json::Value::getType/getInteger, and
-    // "3GPpjQdAMTw"/"9rAeANT2tyE"/"tsvEmnenz48" are __cxa_guard_acquire/__cxa_guard_release/
-    // __cxa_atexit (verified by hashing against scripts/ps5_names.txt). Do not register them
-    // here as kernel mutex functions: the cxa guards are implemented in CxxAbiExports.cs and
-    // shadowing them breaks every C++ static-init guard in the game.
-
-    private static int SetZeroReturn(CpuContext ctx)
-    {
-        ctx[CpuRegister.Rax] = 0;
-        return 0;
-    }
 }

src/SharpEmu.Libs/Kernel/KernelPthreadCompatExports.cs

@@ -3,6 +3,8 @@
 
 using System.Collections.Concurrent;
 using SharpEmu.HLE;
+using System.Buffers.Binary;
+using System.Threading;
 using System.Diagnostics.CodeAnalysis;
 
 namespace SharpEmu.Libs.Kernel;
@@ -93,13 +95,6 @@ public static class KernelPthreadCompatExports
         return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
 
-    [SysAbiExport(
-        Nid = "7Xl257M4VNI",
-        ExportName = "pthread_equal",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libc")]
-    public static int PosixPthreadEqual(CpuContext ctx) => PthreadEqual(ctx);
-
     [SysAbiExport(
         Nid = "T72hz6ffq08",
         ExportName = "scePthreadYield",
@@ -327,12 +322,6 @@ public static class KernelPthreadCompatExports
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libKernel")]
     public static int PosixPthreadCondSignal(CpuContext ctx) => PthreadCondSignalCore(ctx, ctx[CpuRegister.Rdi], broadcast: false);
-    [SysAbiExport(
-        Nid = "27bAgiJmOh0",
-        ExportName = "pthread_cond_timedwait",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int PosixPthreadCondTimedwait(CpuContext ctx) => PthreadCondWaitCore(ctx, ctx[CpuRegister.Rdi], ctx[CpuRegister.Rsi], timed: true, timeoutUsec: unchecked((uint)ctx[CpuRegister.Rdx]));
 
     [SysAbiExport(
         Nid = "m5-2bsNfv7s",
@@ -387,42 +376,42 @@ public static class KernelPthreadCompatExports
         var initRoutine = ctx[CpuRegister.Rsi];
         if (onceAddress == 0 || initRoutine == 0)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
-        if (!ctx.TryReadInt32(onceAddress, out var onceValue))
+        if (!TryReadInt32(ctx, onceAddress, out var onceValue))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         if (onceValue == PthreadOnceDone)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
         }
 
         var gate = GetPthreadOnceGate(onceAddress);
         var shouldCall = false;
         lock (gate)
         {
-            if (!ctx.TryReadInt32(onceAddress, out onceValue))
+            if (!TryReadInt32(ctx, onceAddress, out onceValue))
             {
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
 
             while (onceValue == PthreadOnceInProgress)
             {
                 Monitor.Wait(gate, TimeSpan.FromMilliseconds(1));
-                if (!ctx.TryReadInt32(onceAddress, out onceValue))
+                if (!TryReadInt32(ctx, onceAddress, out onceValue))
                 {
-                    return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                    return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
                 }
             }
 
             if (onceValue != PthreadOnceDone)
             {
-                if (!ctx.TryWriteInt32(onceAddress, PthreadOnceInProgress))
+                if (!TryWriteInt32(ctx, onceAddress, PthreadOnceInProgress))
                 {
-                    return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                    return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
                 }
 
                 shouldCall = true;
@@ -438,21 +427,21 @@ public static class KernelPthreadCompatExports
             {
                 lock (gate)
                 {
-                    _ = ctx.TryWriteInt32(onceAddress, PthreadOnceUninitialized);
+                    _ = TryWriteInt32(ctx, onceAddress, PthreadOnceUninitialized);
                     Monitor.PulseAll(gate);
                 }
 
                 TracePthreadOnce(onceAddress, initRoutine, "failed", error);
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_TRY_AGAIN);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_TRY_AGAIN);
             }
 
             lock (gate)
             {
-                if (!ctx.TryWriteInt32(onceAddress, PthreadOnceDone))
+                if (!TryWriteInt32(ctx, onceAddress, PthreadOnceDone))
                 {
-                    _ = ctx.TryWriteInt32(onceAddress, PthreadOnceUninitialized);
+                    _ = TryWriteInt32(ctx, onceAddress, PthreadOnceUninitialized);
                     Monitor.PulseAll(gate);
-                    return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                    return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
                 }
 
                 Monitor.PulseAll(gate);
@@ -460,7 +449,7 @@ public static class KernelPthreadCompatExports
         }
 
         TracePthreadOnce(onceAddress, initRoutine, shouldCall ? "call" : "done", null);
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     private static int PthreadMutexInitCore(CpuContext ctx, ulong mutexAddress, ulong attrAddress)
@@ -1022,12 +1011,19 @@ public static class KernelPthreadCompatExports
     }
 
     private static bool InitializeMutexObject(CpuContext ctx, ulong address, PthreadMutexState state) =>
-        ctx.TryWriteUInt32(address + 0x20, unchecked((uint)state.Type)) &&
+        TryWriteUInt32(ctx, address + 0x20, unchecked((uint)state.Type)) &&
-        ctx.TryWriteUInt32(address + 0x3C, unchecked((uint)state.Protocol));
+        TryWriteUInt32(ctx, address + 0x3C, unchecked((uint)state.Protocol));
 
     private static bool WriteMutexAttrObject(CpuContext ctx, ulong address, PthreadMutexAttrState state) =>
-        ctx.TryWriteUInt32(address, unchecked((uint)state.Type)) &&
+        TryWriteUInt32(ctx, address, unchecked((uint)state.Type)) &&
-        ctx.TryWriteUInt32(address + 4, unchecked((uint)state.Protocol));
+        TryWriteUInt32(ctx, address + 4, unchecked((uint)state.Protocol));
+
+    private static bool TryWriteUInt32(CpuContext ctx, ulong address, uint value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(uint)];
+        BitConverter.TryWriteBytes(bytes, value);
+        return ctx.Memory.TryWrite(address, bytes);
+    }
 
     private static int PthreadCondInitCore(CpuContext ctx, ulong condAddress)
     {
@@ -1319,6 +1315,32 @@ public static class KernelPthreadCompatExports
         }
     }
 
+    private static int SetReturn(CpuContext ctx, OrbisGen2Result result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)(int)result);
+        return (int)result;
+    }
+
+    private static bool TryReadInt32(CpuContext ctx, ulong address, out int value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(int)];
+        if (!ctx.Memory.TryRead(address, bytes))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadInt32LittleEndian(bytes);
+        return true;
+    }
+
+    private static bool TryWriteInt32(CpuContext ctx, ulong address, int value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(int)];
+        BinaryPrimitives.WriteInt32LittleEndian(bytes, value);
+        return ctx.Memory.TryWrite(address, bytes);
+    }
+
     private static bool CreateImplicitMutexState(CpuContext ctx, ulong mutexAddress, int type, out ulong resolvedAddress, [NotNullWhen(true)] out PthreadMutexState? state)
     {
         var createdState = new PthreadMutexState

src/SharpEmu.Libs/Kernel/KernelPthreadExtendedCompatExports.cs

@@ -2,8 +2,10 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 using SharpEmu.HLE;
+using System.Buffers.Binary;
 using System.Collections.Concurrent;
 using System.Text;
+using System.Threading;
 using System.Diagnostics.CodeAnalysis;
 
 namespace SharpEmu.Libs.Kernel;
@@ -20,7 +22,6 @@ public static class KernelPthreadExtendedCompatExports
     private const int DefaultSchedPriority = DefaultThreadPriority;
     private const ulong SyntheticRwlockHandleBase = 0x00006003_0000_0000;
     private const ulong SyntheticPthreadAttrHandleBase = 0x00006004_0000_0000;
-    private const ulong SyntheticRwlockAttrHandleBase = 0x00006005_0000_0000;
 
     private static readonly object _stateGate = new();
     private static readonly Dictionary<ulong, ThreadState> _threadStates = new();
@@ -30,7 +31,6 @@ public static class KernelPthreadExtendedCompatExports
     private static int _nextTlsKey = 1;
     private static long _nextSyntheticRwlockHandleId = 1;
     private static long _nextSyntheticPthreadAttrHandleId = 1;
-    private static long _nextSyntheticRwlockAttrHandleId = 1;
 
     private static readonly ConcurrentDictionary<ulong, ConcurrentDictionary<int, ulong>> _threadLocalSpecific = new();
 
@@ -277,7 +277,7 @@ public static class KernelPthreadExtendedCompatExports
             priority = GetOrCreateThreadStateLocked(thread).Priority;
         }
 
-        if (!ctx.TryWriteInt32(outPriorityAddress, priority))
+        if (!TryWriteInt32(ctx, outPriorityAddress, priority))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -324,7 +324,7 @@ public static class KernelPthreadExtendedCompatExports
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
         }
 
-        if (!ctx.TryReadInt32(schedParamAddress, out var schedPriority))
+        if (!TryReadInt32(ctx, schedParamAddress, out var schedPriority))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -494,7 +494,7 @@ public static class KernelPthreadExtendedCompatExports
             state = GetOrCreateAttrStateLocked(attrAddress);
         }
 
-        if (!ctx.TryWriteInt32(outStateAddress, state.DetachState))
+        if (!TryWriteInt32(ctx, outStateAddress, state.DetachState))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -717,35 +717,6 @@ public static class KernelPthreadExtendedCompatExports
         return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
 
-    [SysAbiExport(
-        Nid = "FXPWHNk8Of0",
-        ExportName = "scePthreadAttrGetschedparam",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int PthreadAttrGetschedparam(CpuContext ctx)
-    {
-        var attrAddress = ctx[CpuRegister.Rdi];
-        var schedParamAddress = ctx[CpuRegister.Rsi];
-        if (attrAddress == 0 || schedParamAddress == 0)
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-        }
-
-        PthreadAttrState state;
-        lock (_stateGate)
-        {
-            state = GetOrCreateAttrStateLocked(attrAddress);
-        }
-
-        if (!ctx.TryWriteInt32(schedParamAddress, state.SchedPriority))
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
-        }
-
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
     [SysAbiExport(
         Nid = "DzES9hQF4f4",
         ExportName = "scePthreadAttrSetschedparam",
@@ -760,7 +731,7 @@ public static class KernelPthreadExtendedCompatExports
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
         }
 
-        if (!ctx.TryReadInt32(schedParamAddress, out var schedPriority))
+        if (!TryReadInt32(ctx, schedParamAddress, out var schedPriority))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -839,37 +810,6 @@ public static class KernelPthreadExtendedCompatExports
         return PthreadAttrSetstacksize(ctx);
     }
 
-    [SysAbiExport(
-        Nid = "Bvn74vj6oLo",
-        ExportName = "scePthreadAttrSetstack",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int PthreadAttrSetstack(CpuContext ctx)
-    {
-        var attrAddress = ctx[CpuRegister.Rdi];
-        var stackAddress = ctx[CpuRegister.Rsi];
-        var stackSize = ctx[CpuRegister.Rdx];
-        if (attrAddress == 0 || stackAddress == 0 || stackSize == 0)
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-        }
-
-        var resolvedAddress = ResolvePthreadAttrHandle(ctx, attrAddress);
-        lock (_stateGate)
-        {
-            var state = GetOrCreateAttrStateLocked(resolvedAddress);
-            var updated = state with { StackAddress = stackAddress, StackSize = stackSize };
-            _attrStates[resolvedAddress] = updated;
-            if (resolvedAddress != attrAddress)
-            {
-                _attrStates[attrAddress] = updated;
-            }
-        }
-
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
     [SysAbiExport(
         Nid = "6ULAa0fq4jA",
         ExportName = "scePthreadRwlockInit",
@@ -1047,47 +987,6 @@ public static class KernelPthreadExtendedCompatExports
         LibraryName = "libKernel")]
     public static int PosixPthreadRwlockUnlock(CpuContext ctx) => PthreadRwlockUnlock(ctx);
 
-    [SysAbiExport(
-        Nid = "yOfGg-I1ZII",
-        ExportName = "scePthreadRwlockattrInit",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int PthreadRwlockattrInit(CpuContext ctx)
-    {
-        var attrAddress = ctx[CpuRegister.Rdi];
-        if (attrAddress == 0)
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-        }
-
-        var syntheticHandle = AllocateSyntheticHandle(SyntheticRwlockAttrHandleBase, ref _nextSyntheticRwlockAttrHandleId);
-        if (!KernelMemoryCompatExports.TryWriteUInt64Compat(ctx, attrAddress, syntheticHandle))
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
-        }
-
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    [SysAbiExport(
-        Nid = "i2ifZ3fS2fo",
-        ExportName = "scePthreadRwlockattrDestroy",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int PthreadRwlockattrDestroy(CpuContext ctx)
-    {
-        var attrAddress = ctx[CpuRegister.Rdi];
-        if (attrAddress == 0)
-        {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-        }
-
-        _ = KernelMemoryCompatExports.TryWriteUInt64Compat(ctx, attrAddress, 0);
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
     [SysAbiExport(
         Nid = "mqULNdimTn0",
         ExportName = "pthread_key_create",
@@ -1112,12 +1011,12 @@ public static class KernelPthreadExtendedCompatExports
             }
         }
 
-        if (!ctx.TryWriteInt32(outKeyAddress, key))
+        if (!TryWriteInt32(ctx, outKeyAddress, key))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
 
-        ctx[CpuRegister.Rax] = 0;
+        ctx[CpuRegister.Rax] = unchecked((uint)key);
         return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
 
@@ -1449,4 +1348,24 @@ public static class KernelPthreadExtendedCompatExports
         payload[^1] = 0;
         return ctx.Memory.TryWrite(address, payload);
     }
+
+    private static bool TryReadInt32(CpuContext ctx, ulong address, out int value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(int)];
+        if (!ctx.Memory.TryRead(address, bytes))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadInt32LittleEndian(bytes);
+        return true;
+    }
+
+    private static bool TryWriteInt32(CpuContext ctx, ulong address, int value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(int)];
+        BinaryPrimitives.WriteInt32LittleEndian(bytes, value);
+        return ctx.Memory.TryWrite(address, bytes);
+    }
 }

src/SharpEmu.Libs/Kernel/KernelRuntimeCompatExports.cs

@@ -4,32 +4,20 @@
 using SharpEmu.HLE;
 using SharpEmu.Libs.Fiber;
 using System.Buffers.Binary;
+using System.Collections.Generic;
 using System.Diagnostics;
+using System.IO;
+using System.Reflection;
 using System.Runtime.InteropServices;
 using System.Runtime.Intrinsics.X86;
 using System.Security.Cryptography;
 using System.Text;
+using System.Threading;
 
 namespace SharpEmu.Libs.Kernel;
 
 public static class KernelRuntimeCompatExports
 {
-    internal const int ClockRealtime = 0;
-    internal const int ClockVirtual = 1;
-    internal const int ClockProf = 2;
-    internal const int ClockMonotonic = 4;
-    internal const int ClockUptime = 5;
-    internal const int ClockUptimePrecise = 7;
-    internal const int ClockUptimeFast = 8;
-    internal const int ClockRealtimePrecise = 9;
-    internal const int ClockRealtimeFast = 10;
-    internal const int ClockMonotonicPrecise = 11;
-    internal const int ClockMonotonicFast = 12;
-    internal const int ClockSecond = 13;
-    internal const int ClockThreadCputimeId = 14;
-    internal const int ClockProcTime = 15;
-    private const int Efault = 14;
-    private const int Einval = 22;
     private const ulong TlsErrnoOffset = 0x40;
     private const ulong TlsStackChkGuardBaseOffset = 0x800;
     private const ulong StackChkGuardFieldOffset = 0x10;
@@ -80,77 +68,6 @@ public static class KernelRuntimeCompatExports
     [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
     private delegate ulong RdtscDelegate();
 
-    [SysAbiExport(
-        Nid = "QvsZxomvUHs",
-        ExportName = "sceKernelNanosleep",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libKernel")]
-    public static int KernelNanosleep(CpuContext ctx)
-    {
-        var requestAddress = ctx[CpuRegister.Rdi];
-        var remainAddress = ctx[CpuRegister.Rsi];
-
-        if (requestAddress == 0)
-        {
-            ctx[CpuRegister.Rax] = Einval;
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-        }
-
-        Span<byte> timespecBuffer = stackalloc byte[16];
-        if (!ctx.Memory.TryRead(requestAddress, timespecBuffer))
-        {
-            ctx[CpuRegister.Rax] = Efault;
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
-        }
-
-        var tvSec = BinaryPrimitives.ReadInt64LittleEndian(timespecBuffer);
-        var tvNsec = BinaryPrimitives.ReadInt64LittleEndian(timespecBuffer[sizeof(long)..]);
-
-        if (tvSec < 0 || tvNsec < 0 || tvNsec >= 1_000_000_000L)
-        {
-            ctx[CpuRegister.Rax] = Einval;
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
-        }
-
-        if (tvSec == 0 && tvNsec == 0)
-        {
-            WriteRemainingTime(ctx, remainAddress, 0, 0);
-            ctx[CpuRegister.Rax] = 0;
-            return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-        }
-
-        GuestThreadExecution.Scheduler?.Pump(ctx, "sceKernelNanosleep");
-
-        // TimeSpan resolution is 100 ns ticks, so sub-100 ns requests round up to
-        // a single tick rather than collapsing to a zero-length (no-op) sleep.
-        var totalTicks = tvSec * TimeSpan.TicksPerSecond + Math.Max(tvNsec / 100L, 1L);
-        try
-        {
-            Thread.Sleep(TimeSpan.FromTicks(totalTicks));
-        }
-        catch (ArgumentOutOfRangeException)
-        {
-            Thread.Sleep(TimeSpan.FromMilliseconds(int.MaxValue));
-        }
-
-        WriteRemainingTime(ctx, remainAddress, 0, 0);
-        ctx[CpuRegister.Rax] = 0;
-        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
-    }
-
-    private static void WriteRemainingTime(CpuContext ctx, ulong remainAddress, long seconds, long nanoseconds)
-    {
-        if (remainAddress == 0)
-        {
-            return;
-        }
-
-        Span<byte> remainBuffer = stackalloc byte[16];
-        BinaryPrimitives.WriteInt64LittleEndian(remainBuffer, seconds);
-        BinaryPrimitives.WriteInt64LittleEndian(remainBuffer[sizeof(long)..], nanoseconds);
-        ctx.Memory.TryWrite(remainAddress, remainBuffer);
-    }
-
     [SysAbiExport(
         Nid = "1jfXLRVzisc",
         ExportName = "sceKernelUsleep",
@@ -170,11 +87,11 @@ public static class KernelRuntimeCompatExports
 
         if (micros < 1000)
         {
-            // Guest worker pools use usleep(1) as a polling backoff. Do not turn
+            // Guest worker pools use usleep(1) as a polling backoff. Periodically
-            // PS microsecond waits into Windows millisecond sleeps on hot paths.
+            // relinquish a full host time slice so spin workers cannot starve producers.
-            if ((++_shortUsleepCount & 255) == 0)
+            if ((++_shortUsleepCount & 31) == 0)
             {
-                Thread.Sleep(0);
+                Thread.Sleep(1);
             }
             else
             {
@@ -273,16 +190,21 @@ public static class KernelRuntimeCompatExports
 
         long seconds;
         long nanoseconds;
-        if (!ResolveClockTime(clockId, out seconds, out nanoseconds))
+        if (clockId == 0)
         {
-            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
+            var now = DateTimeOffset.UtcNow;
+            seconds = now.ToUnixTimeSeconds();
+            nanoseconds = (now.Ticks % TimeSpan.TicksPerSecond) * 100;
+        }
+        else
+        {
+            var elapsedTicks = Stopwatch.GetTimestamp() - _processStartCounter;
+            seconds = elapsedTicks / Stopwatch.Frequency;
+            nanoseconds = (elapsedTicks % Stopwatch.Frequency) * 1_000_000_000L / Stopwatch.Frequency;
         }
 
-        Span<byte> timespecBuffer = stackalloc byte[16];
+        if (!ctx.TryWriteUInt64(timeAddress, unchecked((ulong)seconds)) ||
-        BinaryPrimitives.WriteInt64LittleEndian(timespecBuffer, seconds);
+            !ctx.TryWriteUInt64(timeAddress + sizeof(long), unchecked((ulong)nanoseconds)))
-        BinaryPrimitives.WriteInt64LittleEndian(timespecBuffer[sizeof(long)..], nanoseconds);
-
-        if (!ctx.Memory.TryWrite(timeAddress, timespecBuffer))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -307,11 +229,8 @@ public static class KernelRuntimeCompatExports
         var now = DateTimeOffset.UtcNow;
         var seconds = now.ToUnixTimeSeconds();
         var microseconds = (now.Ticks % TimeSpan.TicksPerSecond) / 10;
-
+        if (!ctx.TryWriteUInt64(timeAddress, unchecked((ulong)seconds)) ||
-        Span<byte> timevalBuffer = stackalloc byte[16];
+            !ctx.TryWriteUInt64(timeAddress + sizeof(long), unchecked((ulong)microseconds)))
-        BinaryPrimitives.WriteInt64LittleEndian(timevalBuffer, seconds);
-        BinaryPrimitives.WriteInt64LittleEndian(timevalBuffer[sizeof(long)..], microseconds);
-        if (!ctx.Memory.TryWrite(timeAddress, timevalBuffer))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -333,28 +252,18 @@ public static class KernelRuntimeCompatExports
         var seconds = now.ToUnixTimeSeconds();
         var microseconds = (now.Ticks % TimeSpan.TicksPerSecond) / 10;
 
-        if (timeAddress != 0)
+        if (timeAddress != 0 &&
+            (!ctx.TryWriteUInt64(timeAddress, unchecked((ulong)seconds)) ||
+             !ctx.TryWriteUInt64(timeAddress + sizeof(long), unchecked((ulong)microseconds))))
         {
-            Span<byte> timevalBuffer = stackalloc byte[16];
+            return -1;
-            BinaryPrimitives.WriteInt64LittleEndian(timevalBuffer, seconds);
-            BinaryPrimitives.WriteInt64LittleEndian(timevalBuffer[sizeof(long)..], microseconds);
-            if (!ctx.Memory.TryWrite(timeAddress, timevalBuffer))
-            {
-                TrySetErrno(ctx, Efault);
-                return -1;
-            }
         }
 
-        if (timezoneAddress != 0)
+        if (timezoneAddress != 0 &&
+            (!TryWriteInt32(ctx, timezoneAddress, 0) ||
+             !TryWriteInt32(ctx, timezoneAddress + sizeof(int), 0)))
         {
-            Span<byte> timezoneBuffer = stackalloc byte[8];
+            return -1;
-            BinaryPrimitives.WriteInt32LittleEndian(timezoneBuffer, 0);
-            BinaryPrimitives.WriteInt32LittleEndian(timezoneBuffer[sizeof(int)..], 0);
-            if (!ctx.Memory.TryWrite(timezoneAddress, timezoneBuffer))
-            {
-                TrySetErrno(ctx, Efault);
-                return -1;
-            }
         }
 
         ctx[CpuRegister.Rax] = 0;
@@ -709,58 +618,7 @@ public static class KernelRuntimeCompatExports
     internal static bool TrySetErrno(CpuContext ctx, int value)
     {
         var address = GetTlsScratchAddress(ctx, TlsErrnoOffset);
-        return address != 0 && ctx.TryWriteInt32(address, value);
+        return address != 0 && TryWriteInt32(ctx, address, value);
-    }
-
-    internal static bool ResolveClockTime(int clockId, out long seconds, out long nanoseconds)
-    {
-        switch (clockId)
-        {
-            case ClockRealtime:
-            case ClockRealtimePrecise:
-            case ClockRealtimeFast:
-            case ClockVirtual:
-            case ClockProf:
-            {
-                var now = DateTimeOffset.UtcNow;
-                seconds = now.ToUnixTimeSeconds();
-                nanoseconds = (now.Ticks % TimeSpan.TicksPerSecond) * 100;
-                return true;
-            }
-
-            // CLOCK_SECOND is FreeBSD's cached whole-second realtime clock (Quake's
-            // audio_output_thread polls it and treated the previous EINVAL as a fatal
-            // init failure, exiting and getting respawned in a loop).
-            case ClockSecond:
-                seconds = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
-                nanoseconds = 0;
-                return true;
-
-            case ClockMonotonic:
-            case ClockMonotonicPrecise:
-            case ClockMonotonicFast:
-            case ClockUptime:
-            case ClockUptimePrecise:
-            case ClockUptimeFast:
-            // Per-thread/process CPU time approximated with the monotonic clock; games
-            // use these for profiling deltas where monotonicity matters, not absolutes.
-            case ClockThreadCputimeId:
-            case ClockProcTime:
-                GetProcessMonotonicTime(out seconds, out nanoseconds);
-                return true;
-
-            default:
-                seconds = 0;
-                nanoseconds = 0;
-                return false;
-        }
-    }
-
-    internal static void GetProcessMonotonicTime(out long seconds, out long nanoseconds)
-    {
-        var elapsedTicks = Stopwatch.GetTimestamp() - _processStartCounter;
-        seconds = elapsedTicks / Stopwatch.Frequency;
-        nanoseconds = (elapsedTicks % Stopwatch.Frequency) * 1_000_000_000L / Stopwatch.Frequency;
     }
 
     [SysAbiExport(
@@ -881,11 +739,8 @@ public static class KernelRuntimeCompatExports
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
         }
 
-        if (ShouldTraceVirtualMemory())
+        Console.Error.WriteLine(
-        {
+            $"[LOADER][TRACE] reserve_virtual_range: req=0x{requestedAddress:X16} desired=0x{desiredAddress:X16} mapped=0x{mappedAddress:X16} len=0x{length:X16} flags=0x{flags:X8} align=0x{effectiveAlignment:X16}");
-            Console.Error.WriteLine(
-                $"[LOADER][TRACE] reserve_virtual_range: req=0x{requestedAddress:X16} desired=0x{desiredAddress:X16} mapped=0x{mappedAddress:X16} len=0x{length:X16} flags=0x{flags:X8} align=0x{effectiveAlignment:X16}");
-        }
 
         if (!ctx.TryWriteUInt64(inOutAddressPointer, mappedAddress))
         {
@@ -897,7 +752,6 @@ public static class KernelRuntimeCompatExports
             _nextReservedVirtualBase = Math.Max(_nextReservedVirtualBase, mappedAddress + length);
         }
 
-        KernelMemoryCompatExports.RegisterReservedVirtualRange(mappedAddress, length);
         return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
 
@@ -970,7 +824,7 @@ public static class KernelRuntimeCompatExports
         }
 
         var moduleHandle = ResolveModuleHandleByAddress(queriedAddress);
-        if (!ctx.TryWriteInt32(outInfoAddress + ModuleInfoHandleOffset, moduleHandle))
+        if (!TryWriteInt32(ctx, outInfoAddress + ModuleInfoHandleOffset, moduleHandle))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -1000,7 +854,7 @@ public static class KernelRuntimeCompatExports
         }
 
         var moduleHandle = ResolveModuleHandleByAddress(queriedAddress);
-        if (!ctx.TryWriteInt32(outInfoAddress + ModuleInfoHandleOffset, moduleHandle))
+        if (!TryWriteInt32(ctx, outInfoAddress + ModuleInfoHandleOffset, moduleHandle))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -1201,7 +1055,7 @@ public static class KernelRuntimeCompatExports
     public static int KernelStopUnloadModule(CpuContext ctx)
     {
         var resultAddress = ctx[CpuRegister.R9];
-        if (resultAddress != 0 && !ctx.TryWriteInt32(resultAddress, 0))
+        if (resultAddress != 0 && !TryWriteInt32(ctx, resultAddress, 0))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -1219,7 +1073,7 @@ public static class KernelRuntimeCompatExports
     {
         var modulePathAddress = ctx[CpuRegister.Rdi];
         var resultAddress = ctx[CpuRegister.R9];
-        if (resultAddress != 0 && !ctx.TryWriteInt32(resultAddress, 0))
+        if (resultAddress != 0 && !TryWriteInt32(ctx, resultAddress, 0))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -1376,8 +1230,8 @@ public static class KernelRuntimeCompatExports
             : 0;
         var minutesWest = unchecked((int)-offset.TotalMinutes);
 
-        if (!ctx.TryWriteInt32(timezoneAddress, minutesWest) ||
+        if (!TryWriteInt32(ctx, timezoneAddress, minutesWest) ||
-            !ctx.TryWriteInt32(timezoneAddress + sizeof(int), dstSeconds / 60))
+            !TryWriteInt32(ctx, timezoneAddress + sizeof(int), dstSeconds / 60))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -1387,7 +1241,7 @@ public static class KernelRuntimeCompatExports
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
 
-        if (dstSecondsAddress != 0 && !ctx.TryWriteInt32(dstSecondsAddress, dstSeconds))
+        if (dstSecondsAddress != 0 && !TryWriteInt32(ctx, dstSecondsAddress, dstSeconds))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -1447,7 +1301,7 @@ public static class KernelRuntimeCompatExports
             _loadedSysmodules.Add(moduleId);
         }
 
-        if (resultAddress != 0 && !ctx.TryWriteInt32(resultAddress, 0))
+        if (resultAddress != 0 && !TryWriteInt32(ctx, resultAddress, 0))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -1537,7 +1391,7 @@ public static class KernelRuntimeCompatExports
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
         }
 
-        if (!ctx.TryWriteInt32(outInfoAddress + ModuleInfoHandleOffset, module.Handle))
+        if (!TryWriteInt32(ctx, outInfoAddress + ModuleInfoHandleOffset, module.Handle))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -1574,7 +1428,7 @@ public static class KernelRuntimeCompatExports
         var writableCount = (int)Math.Min(Math.Min(capacity, (ulong)int.MaxValue), (ulong)handles.Length);
         for (var i = 0; i < writableCount; i++)
         {
-            if (!ctx.TryWriteInt32(handlesAddress + (ulong)(i * sizeof(int)), handles[i]))
+            if (!TryWriteInt32(ctx, handlesAddress + (ulong)(i * sizeof(int)), handles[i]))
             {
                 return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
             }
@@ -1615,42 +1469,26 @@ public static class KernelRuntimeCompatExports
             return false;
         }
 
-        const int pageSize = 4096;
+        var bytes = new List<byte>(Math.Min(maxLength, 64));
-        const int inlineChunkSize = 64;
+        Span<byte> one = stackalloc byte[1];
-        Span<byte> buffer = stackalloc byte[Math.Min(maxLength, 512)];
+        for (var i = 0; i < maxLength; i++)
-        var length = 0;
-
-        for (var offset = 0; offset < maxLength && length < buffer.Length;)
         {
-            var current = address + (ulong)offset;
+            if (!ctx.Memory.TryRead(address + (ulong)i, one))
-            var pageRemaining = pageSize - (int)(current & (pageSize - 1));
-            var chunkSize = Math.Min(
-                buffer.Length - length,
-                Math.Min(maxLength - offset, Math.Min(inlineChunkSize, pageRemaining)));
-
-            if (chunkSize <= 0)
             {
                 return false;
             }
 
-            var chunk = buffer.Slice(length, chunkSize);
+            if (one[0] == 0)
-            if (!ctx.Memory.TryRead(current, chunk))
             {
-                return false;
+                value = Encoding.UTF8.GetString(bytes.ToArray());
-            }
-
-            var nulIndex = chunk.IndexOf((byte)0);
-            if (nulIndex >= 0)
-            {
-                value = Encoding.UTF8.GetString(buffer[..(length + nulIndex)]);
                 return true;
             }
 
-            length += chunkSize;
+            bytes.Add(one[0]);
-            offset += chunkSize;
         }
 
-        return false;
+        value = Encoding.UTF8.GetString(bytes.ToArray());
+        return true;
     }
 
     private static ulong GetTlsScratchAddress(CpuContext ctx, ulong offset)
@@ -1663,6 +1501,13 @@ public static class KernelRuntimeCompatExports
         return unchecked(ctx.FsBase + offset);
     }
 
+    private static bool TryWriteInt32(CpuContext ctx, ulong address, int value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(int)];
+        BinaryPrimitives.WriteInt32LittleEndian(bytes, value);
+        return ctx.Memory.TryWrite(address, bytes);
+    }
+
     private static nint AllocateStackChkGuardObject()
     {
         try
@@ -1859,7 +1704,7 @@ public static class KernelRuntimeCompatExports
                 return null;
             }
 
-            ReadOnlySpan<byte> stub = stackalloc byte[]
+            Span<byte> stub = stackalloc byte[]
             {
                 0x0F, 0x31,
                 0x48, 0xC1, 0xE2, 0x20,
@@ -1867,14 +1712,7 @@ public static class KernelRuntimeCompatExports
                 0xC3,
             };
 
-            unsafe
+            Marshal.Copy(stub.ToArray(), 0, stubAddress, stub.Length);
-            {
-                fixed (byte* src = stub)
-                {
-                    Buffer.MemoryCopy(src, (void*)stubAddress, stub.Length, stub.Length);
-                }
-            }
-
             return Marshal.GetDelegateForFunctionPointer<RdtscDelegate>(stubAddress);
         }
         catch
@@ -1894,16 +1732,117 @@ public static class KernelRuntimeCompatExports
         bool allowSearch,
         out ulong mappedAddress)
     {
-        return KernelVirtualRangeAllocator.TryReserve(
+        mappedAddress = 0;
-            ctx,
+        if (length == 0)
-            desiredAddress,
+        {
-            length,
+            return false;
-            executable: false,
+        }
-            alignment,
+
-            allowSearch,
+        try
-            allowAllocateAtAlternative: allowSearch,
+        {
-            "reserve_virtual_range",
+            object memoryObject = ctx.Memory;
-            out mappedAddress);
+            MethodInfo? allocateAt = null;
+            MethodInfo? allocateAtOrAbove = null;
+            var allocateAtHasAllowAlternativeArg = false;
+            for (var depth = 0; depth < 4; depth++)
+            {
+                foreach (var candidate in memoryObject.GetType().GetMethods(BindingFlags.Public | BindingFlags.Instance))
+                {
+                    var parameters = candidate.GetParameters();
+                    if (string.Equals(candidate.Name, "TryAllocateAtOrAbove", StringComparison.Ordinal) &&
+                        parameters.Length == 5 &&
+                        parameters[0].ParameterType == typeof(ulong) &&
+                        parameters[1].ParameterType == typeof(ulong) &&
+                        parameters[2].ParameterType == typeof(bool) &&
+                        parameters[3].ParameterType == typeof(ulong) &&
+                        parameters[4].ParameterType == typeof(ulong).MakeByRefType())
+                    {
+                        allocateAtOrAbove = candidate;
+                    }
+                    else if (string.Equals(candidate.Name, "AllocateAt", StringComparison.Ordinal))
+                    {
+                        if (parameters.Length == 3 &&
+                            parameters[0].ParameterType == typeof(ulong) &&
+                            parameters[1].ParameterType == typeof(ulong) &&
+                            parameters[2].ParameterType == typeof(bool))
+                        {
+                            allocateAt = candidate;
+                            allocateAtHasAllowAlternativeArg = false;
+                        }
+                        else if (parameters.Length == 4 &&
+                            parameters[0].ParameterType == typeof(ulong) &&
+                            parameters[1].ParameterType == typeof(ulong) &&
+                            parameters[2].ParameterType == typeof(bool) &&
+                            parameters[3].ParameterType == typeof(bool))
+                        {
+                            allocateAt = candidate;
+                            allocateAtHasAllowAlternativeArg = true;
+                        }
+                    }
+
+                    if (allocateAtOrAbove is not null && allocateAt is not null)
+                    {
+                        break;
+                    }
+                }
+
+                if (allocateAtOrAbove is not null || allocateAt is not null)
+                {
+                    break;
+                }
+
+                var innerProperty = memoryObject.GetType().GetProperty("Inner", BindingFlags.Public | BindingFlags.Instance);
+                if (innerProperty is null)
+                {
+                    break;
+                }
+
+                var innerValue = innerProperty.GetValue(memoryObject);
+                if (innerValue is null || ReferenceEquals(innerValue, memoryObject))
+                {
+                    break;
+                }
+
+                memoryObject = innerValue;
+            }
+
+            if (allowSearch && allocateAtOrAbove is not null)
+            {
+                var searchArgs = new object[] { desiredAddress, length, false, alignment, 0UL };
+                var searchResult = allocateAtOrAbove.Invoke(memoryObject, searchArgs);
+                if (searchResult is bool trueValue && trueValue &&
+                    searchArgs[4] is ulong searchedAddress && searchedAddress != 0)
+                {
+                    mappedAddress = searchedAddress;
+                    return true;
+                }
+            }
+
+            if (allocateAt is null)
+            {
+                Console.Error.WriteLine($"[LOADER][TRACE] reserve_virtual_range: AllocateAt missing on {ctx.Memory.GetType().FullName}");
+                return false;
+            }
+
+            var invokeArgs = allocateAtHasAllowAlternativeArg
+                ? new object[] { desiredAddress, length, false, allowSearch }
+                : new object[] { desiredAddress, length, false };
+            var result = allocateAt.Invoke(memoryObject, invokeArgs);
+            if (result is not ulong allocated || allocated == 0)
+            {
+                var resultType = result?.GetType().FullName ?? "null";
+                Console.Error.WriteLine($"[LOADER][TRACE] reserve_virtual_range: AllocateAt returned {resultType} value={result ?? "null"}");
+                return false;
+            }
+
+            mappedAddress = allocated;
+            return true;
+        }
+        catch
+        {
+            Console.Error.WriteLine("[LOADER][TRACE] reserve_virtual_range: AllocateAt invocation threw");
+            return false;
+        }
     }
 
     private static ulong AlignUp(ulong value, ulong alignment)
@@ -1916,9 +1855,4 @@ public static class KernelRuntimeCompatExports
         var mask = alignment - 1;
         return (value + mask) & ~mask;
     }
-
-    private static bool ShouldTraceVirtualMemory()
-    {
-        return string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_VIRTUAL_MEMORY"), "1", StringComparison.Ordinal);
-    }
 }

src/SharpEmu.Libs/Kernel/KernelSemaphoreCompatExports.cs

@@ -1,7 +1,9 @@
 // Copyright (C) 2026 SharpEmu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+using System.Buffers.Binary;
 using System.Collections.Concurrent;
+using System.Text;
 using SharpEmu.HLE;
 
 namespace SharpEmu.Libs.Kernel;
@@ -19,22 +21,9 @@ public static class KernelSemaphoreCompatExports
         public required int MaxCount { get; init; }
         public int Count { get; set; }
         public int WaitingThreads { get; set; }
-        public int CancelEpoch { get; set; }
-        public bool Deleted { get; set; }
         public object Gate { get; } = new();
     }
 
-    private sealed class SemaphoreWaiter
-    {
-        public required int NeedCount { get; init; }
-        public required int CancelEpochAtBlock { get; init; }
-
-        // Written and read only under the owning semaphore's Gate.
-        public int? Result { get; set; }
-    }
-
-    private static string GetSemaphoreWakeKey(uint handle) => $"kernel_sema:0x{handle:X8}";
-
     [SysAbiExport(
         Nid = "188x57JYp0g",
         ExportName = "sceKernelCreateSema",
@@ -57,12 +46,12 @@ public static class KernelSemaphoreCompatExports
             initialCount > maxCount ||
             optionAddress != 0)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
-        if (!ctx.TryReadNullTerminatedUtf8(nameAddress, MaxSemaphoreNameLength, out var name))
+        if (!TryReadNullTerminatedUtf8(ctx, nameAddress, MaxSemaphoreNameLength, out var name))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         var handle = unchecked((uint)Interlocked.Increment(ref _nextSemaphoreHandle));
@@ -71,32 +60,22 @@ public static class KernelSemaphoreCompatExports
             handle = unchecked((uint)Interlocked.Increment(ref _nextSemaphoreHandle));
         }
 
-        var state = new KernelSemaphoreState
+        _semaphores[handle] = new KernelSemaphoreState
         {
             Name = name,
             InitialCount = initialCount,
             MaxCount = maxCount,
             Count = initialCount,
         };
-        _semaphores[handle] = state;
 
-        if (!ctx.TryWriteUInt32(semaphoreAddress, handle))
+        if (!TryWriteUInt32(ctx, semaphoreAddress, handle))
         {
             _semaphores.TryRemove(handle, out _);
-            // Handles are sequential and guest-predictable, so a hostile guest can
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
-            // race a WaitSema onto the handle between publication above and this
-            // rollback. Strand-proof that waiter exactly like DeleteSema does.
-            lock (state.Gate)
-            {
-                state.Deleted = true;
-            }
-
-            _ = GuestThreadExecution.Scheduler?.WakeBlockedThreads(GetSemaphoreWakeKey(handle));
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         TraceSemaphore($"create handle=0x{handle:X8} name='{name}' attr=0x{attr:X} init={initialCount} max={maxCount}");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -112,12 +91,12 @@ public static class KernelSemaphoreCompatExports
 
         if (!_semaphores.TryGetValue(handle, out var semaphore))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
         if (needCount < 1 || needCount > semaphore.MaxCount)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         lock (semaphore.Gate)
@@ -126,40 +105,30 @@ public static class KernelSemaphoreCompatExports
             {
                 semaphore.Count -= needCount;
                 TraceSemaphore($"wait handle=0x{handle:X8} name='{semaphore.Name}' need={needCount} count={semaphore.Count}");
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
             }
 
             if (timeoutAddress != 0)
             {
-                if (!ctx.TryReadUInt32(timeoutAddress, out _))
+                if (!TryReadUInt32(ctx, timeoutAddress, out _))
                 {
-                    return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                    return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
                 }
 
-                _ = ctx.TryWriteUInt32(timeoutAddress, 0);
+                _ = TryWriteUInt32(ctx, timeoutAddress, 0);
                 TraceSemaphore($"wait-timeout handle=0x{handle:X8} name='{semaphore.Name}' need={needCount} count={semaphore.Count}");
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_TIMED_OUT);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_TIMED_OUT);
             }
 
-            var waiter = new SemaphoreWaiter
+            if (!GuestThreadExecution.RequestCurrentThreadBlock(ctx, "sceKernelWaitSema"))
-            {
-                NeedCount = needCount,
-                CancelEpochAtBlock = semaphore.CancelEpoch,
-            };
-            if (!GuestThreadExecution.RequestCurrentThreadBlock(
-                    ctx,
-                    "sceKernelWaitSema",
-                    GetSemaphoreWakeKey(handle),
-                    resumeHandler: () => CompleteBlockedSemaWait(semaphore, waiter),
-                    wakeHandler: () => TryConsumeBlockedSemaWait(semaphore, waiter)))
             {
                 TraceSemaphore($"wait-would-block handle=0x{handle:X8} name='{semaphore.Name}' need={needCount} count={semaphore.Count}");
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_TRY_AGAIN);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_TRY_AGAIN);
             }
 
             semaphore.WaitingThreads++;
             TraceSemaphore($"wait-block handle=0x{handle:X8} name='{semaphore.Name}' need={needCount} count={semaphore.Count} waiters={semaphore.WaitingThreads}");
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
         }
     }
 
@@ -175,12 +144,12 @@ public static class KernelSemaphoreCompatExports
 
         if (!_semaphores.TryGetValue(handle, out var semaphore))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
         if (needCount < 1 || needCount > semaphore.MaxCount)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         lock (semaphore.Gate)
@@ -188,12 +157,12 @@ public static class KernelSemaphoreCompatExports
             if (semaphore.Count < needCount)
             {
                 TraceSemaphore($"poll-busy handle=0x{handle:X8} name='{semaphore.Name}' need={needCount} count={semaphore.Count}");
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_BUSY);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_BUSY);
             }
 
             semaphore.Count -= needCount;
             TraceSemaphore($"poll handle=0x{handle:X8} name='{semaphore.Name}' need={needCount} count={semaphore.Count}");
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
         }
     }
 
@@ -209,31 +178,25 @@ public static class KernelSemaphoreCompatExports
 
         if (!_semaphores.TryGetValue(handle, out var semaphore))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
         if (signalCount <= 0)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         lock (semaphore.Gate)
         {
             if (semaphore.Count > semaphore.MaxCount - signalCount)
             {
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
             }
 
             semaphore.Count += signalCount;
             TraceSemaphore($"signal handle=0x{handle:X8} name='{semaphore.Name}' signal={signalCount} count={semaphore.Count} waiters={semaphore.WaitingThreads}");
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
         }
-
-        // Wake after releasing the gate (lock order: scheduler gate -> semaphore gate).
-        // Wake everyone; the wake handler consumes the count per waiter, so a waiter
-        // whose needCount exceeds the remaining count stays parked while a smaller
-        // waiter can proceed.
-        _ = GuestThreadExecution.Scheduler?.WakeBlockedThreads(GetSemaphoreWakeKey(handle));
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -249,32 +212,26 @@ public static class KernelSemaphoreCompatExports
 
         if (!_semaphores.TryGetValue(handle, out var semaphore))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
         if (setCount > semaphore.MaxCount)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         lock (semaphore.Gate)
         {
-            if (waitingThreadsAddress != 0 && !ctx.TryWriteUInt32(waitingThreadsAddress, unchecked((uint)semaphore.WaitingThreads)))
+            if (waitingThreadsAddress != 0 && !TryWriteUInt32(ctx, waitingThreadsAddress, unchecked((uint)semaphore.WaitingThreads)))
             {
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
 
             semaphore.Count = setCount < 0 ? semaphore.InitialCount : setCount;
-            semaphore.CancelEpoch++;
+            semaphore.WaitingThreads = 0;
-            // WaitingThreads is NOT zeroed here: each canceled waiter decrements it
-            // exactly once in its wake handler. Zeroing here as well would double-count
-            // and silently absorb the increment of a waiter that parks between this
-            // gate release and the wake-all below.
             TraceSemaphore($"cancel handle=0x{handle:X8} name='{semaphore.Name}' set={setCount} count={semaphore.Count}");
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
         }
-
-        _ = GuestThreadExecution.Scheduler?.WakeBlockedThreads(GetSemaphoreWakeKey(handle));
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -287,85 +244,68 @@ public static class KernelSemaphoreCompatExports
         var handle = unchecked((uint)ctx[CpuRegister.Rdi]);
         if (!_semaphores.TryRemove(handle, out var semaphore))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
         }
 
-        // Delete succeeds even with blocked waiters; they wake with the deleted
-        // result (the SCE kernel wakes waiters with the EACCES-class code).
-        lock (semaphore.Gate)
-        {
-            semaphore.Deleted = true;
-        }
-
-        _ = GuestThreadExecution.Scheduler?.WakeBlockedThreads(GetSemaphoreWakeKey(handle));
         TraceSemaphore($"delete handle=0x{handle:X8} name='{semaphore.Name}'");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
-    // Wake handler: runs under the scheduler's guest-thread gate (lock order:
+    private static int SetReturn(CpuContext ctx, OrbisGen2Result result)
-    // scheduler gate -> semaphore gate). Returns true iff the waiter has a final
-    // result and should be re-readied; false leaves it parked.
-    private static bool TryConsumeBlockedSemaWait(KernelSemaphoreState semaphore, SemaphoreWaiter waiter)
     {
-        lock (semaphore.Gate)
+        var value = (int)result;
-        {
+        ctx[CpuRegister.Rax] = unchecked((ulong)value);
-            return TryConsumeBlockedSemaWaitLocked(semaphore, waiter);
+        return value;
-        }
     }
 
-    private static bool TryConsumeBlockedSemaWaitLocked(KernelSemaphoreState semaphore, SemaphoreWaiter waiter)
+    private static bool TryReadUInt32(CpuContext ctx, ulong address, out uint value)
     {
-        if (waiter.Result is not null)
+        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+        if (!ctx.Memory.TryRead(address, buffer))
         {
-            return true;
+            value = 0;
+            return false;
         }
 
-        if (semaphore.Deleted)
+        value = BinaryPrimitives.ReadUInt32LittleEndian(buffer);
-        {
+        return true;
-            waiter.Result = (int)OrbisGen2Result.ORBIS_GEN2_ERROR_DELETED;
-            semaphore.WaitingThreads = Math.Max(0, semaphore.WaitingThreads - 1);
-            TraceSemaphore($"wake-deleted name='{semaphore.Name}' need={waiter.NeedCount}");
-            return true;
-        }
-
-        if (semaphore.CancelEpoch != waiter.CancelEpochAtBlock)
-        {
-            waiter.Result = (int)OrbisGen2Result.ORBIS_GEN2_ERROR_CANCELED;
-            semaphore.WaitingThreads = Math.Max(0, semaphore.WaitingThreads - 1);
-            TraceSemaphore($"wake-canceled name='{semaphore.Name}' need={waiter.NeedCount}");
-            return true;
-        }
-
-        if (semaphore.Count >= waiter.NeedCount)
-        {
-            semaphore.Count -= waiter.NeedCount;
-            waiter.Result = (int)OrbisGen2Result.ORBIS_GEN2_OK;
-            semaphore.WaitingThreads = Math.Max(0, semaphore.WaitingThreads - 1);
-            TraceSemaphore($"wake-consume name='{semaphore.Name}' need={waiter.NeedCount} count={semaphore.Count} waiters={semaphore.WaitingThreads}");
-            return true;
-        }
-
-        return false;
     }
 
-    // Resume handler: runs on the woken guest thread outside the scheduler gate;
+    private static bool TryWriteUInt32(CpuContext ctx, ulong address, uint value)
-    // its return value becomes the guest's RAX for the resumed sceKernelWaitSema.
-    private static int CompleteBlockedSemaWait(KernelSemaphoreState semaphore, SemaphoreWaiter waiter)
     {
-        lock (semaphore.Gate)
+        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+        BinaryPrimitives.WriteUInt32LittleEndian(buffer, value);
+        return ctx.Memory.TryWrite(address, buffer);
+    }
+
+    private static bool TryReadNullTerminatedUtf8(CpuContext ctx, ulong address, int maxLength, out string value)
+    {
+        value = string.Empty;
+        if (address == 0 || maxLength <= 0)
         {
-            if (waiter.Result is null && !TryConsumeBlockedSemaWaitLocked(semaphore, waiter))
+            return false;
+        }
+
+        var bytes = new byte[Math.Min(maxLength, 4096)];
+        for (var i = 0; i < bytes.Length; i++)
+        {
+            Span<byte> current = stackalloc byte[1];
+            if (!ctx.Memory.TryRead(address + (ulong)i, current))
             {
-                // Nothing readies a parked semaphore waiter without the wake handler
+                return false;
-                // resolving it, so reaching here means the scheduler contract changed.
-                Console.Error.WriteLine(
-                    $"[LOADER][GAP] sema.resume-no-outcome name='{semaphore.Name}' need={waiter.NeedCount} count={semaphore.Count}");
-                waiter.Result = (int)OrbisGen2Result.ORBIS_GEN2_ERROR_TRY_AGAIN;
-                semaphore.WaitingThreads = Math.Max(0, semaphore.WaitingThreads - 1);
             }
 
-            return waiter.Result!.Value;
+            if (current[0] == 0)
+            {
+                value = Encoding.UTF8.GetString(bytes, 0, i);
+                return true;
+            }
+
+            bytes[i] = current[0];
         }
+
+        value = Encoding.UTF8.GetString(bytes);
+        return true;
     }
 
     private static void TraceSemaphore(string message)

src/SharpEmu.Libs/Kernel/KernelVirtualRangeAllocator.cs

@@ -1,159 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using SharpEmu.HLE;
-using System;
-using System.Collections.Concurrent;
-using System.Reflection;
-
-namespace SharpEmu.Libs.Kernel;
-
-internal static class KernelVirtualRangeAllocator
-{
-    private static readonly ConcurrentDictionary<Type, Accessor> _accessors = new();
-
-    public static bool TryReserve(
-        CpuContext ctx,
-        ulong desiredAddress,
-        ulong length,
-        bool executable,
-        ulong alignment,
-        bool allowSearch,
-        bool allowAllocateAtAlternative,
-        string traceName,
-        out ulong mappedAddress)
-    {
-        mappedAddress = 0;
-        if (length == 0)
-        {
-            return false;
-        }
-
-        try
-        {
-            if (!TryResolveAccessor(ctx.Memory, out var target, out var accessor))
-            {
-                Console.Error.WriteLine($"[LOADER][TRACE] {traceName}: AllocateAt missing on {ctx.Memory.GetType().FullName}");
-                return false;
-            }
-
-            if (allowSearch && accessor.AllocateAtOrAbove is not null)
-            {
-                var searchArgs = new object[] { desiredAddress, length, executable, alignment, 0UL };
-                var searchResult = accessor.AllocateAtOrAbove.Invoke(target, searchArgs);
-                if (searchResult is bool trueValue && trueValue &&
-                    searchArgs[4] is ulong searchedAddress && searchedAddress != 0)
-                {
-                    mappedAddress = searchedAddress;
-                    return true;
-                }
-            }
-
-            if (accessor.AllocateAt is null)
-            {
-                Console.Error.WriteLine($"[LOADER][TRACE] {traceName}: AllocateAt missing on {target.GetType().FullName}");
-                return false;
-            }
-
-            var invokeArgs = accessor.AllocateAtHasAllowAlternativeArg
-                ? new object[] { desiredAddress, length, executable, allowAllocateAtAlternative }
-                : new object[] { desiredAddress, length, executable };
-            var result = accessor.AllocateAt.Invoke(target, invokeArgs);
-            if (result is not ulong allocated || allocated == 0)
-            {
-                var resultType = result?.GetType().FullName ?? "null";
-                Console.Error.WriteLine($"[LOADER][TRACE] {traceName}: AllocateAt returned {resultType} value={result ?? "null"}");
-                return false;
-            }
-
-            mappedAddress = allocated;
-            return true;
-        }
-        catch
-        {
-            Console.Error.WriteLine($"[LOADER][TRACE] {traceName}: AllocateAt invocation threw");
-            return false;
-        }
-    }
-
-    private static bool TryResolveAccessor(object rootMemory, out object target, out Accessor accessor)
-    {
-        target = rootMemory;
-        accessor = default;
-
-        for (var depth = 0; depth < 4; depth++)
-        {
-            accessor = _accessors.GetOrAdd(target.GetType(), DiscoverAccessor);
-            if (accessor.AllocateAt is not null || accessor.AllocateAtOrAbove is not null)
-            {
-                return true;
-            }
-
-            if (accessor.InnerProperty is null)
-            {
-                break;
-            }
-
-            var innerValue = accessor.InnerProperty.GetValue(target);
-            if (innerValue is null || ReferenceEquals(innerValue, target))
-            {
-                break;
-            }
-
-            target = innerValue;
-        }
-
-        return false;
-    }
-
-    private static Accessor DiscoverAccessor(Type type)
-    {
-        MethodInfo? allocateAt = null;
-        MethodInfo? allocateAtOrAbove = null;
-        var allocateAtHasAllowAlternativeArg = false;
-
-        foreach (var candidate in type.GetMethods(BindingFlags.Public | BindingFlags.Instance))
-        {
-            var parameters = candidate.GetParameters();
-            if (string.Equals(candidate.Name, "TryAllocateAtOrAbove", StringComparison.Ordinal) &&
-                parameters.Length == 5 &&
-                parameters[0].ParameterType == typeof(ulong) &&
-                parameters[1].ParameterType == typeof(ulong) &&
-                parameters[2].ParameterType == typeof(bool) &&
-                parameters[3].ParameterType == typeof(ulong) &&
-                parameters[4].ParameterType == typeof(ulong).MakeByRefType())
-            {
-                allocateAtOrAbove = candidate;
-            }
-            else if (string.Equals(candidate.Name, "AllocateAt", StringComparison.Ordinal))
-            {
-                if (parameters.Length == 3 &&
-                    parameters[0].ParameterType == typeof(ulong) &&
-                    parameters[1].ParameterType == typeof(ulong) &&
-                    parameters[2].ParameterType == typeof(bool))
-                {
-                    allocateAt = candidate;
-                    allocateAtHasAllowAlternativeArg = false;
-                }
-                else if (parameters.Length == 4 &&
-                    parameters[0].ParameterType == typeof(ulong) &&
-                    parameters[1].ParameterType == typeof(ulong) &&
-                    parameters[2].ParameterType == typeof(bool) &&
-                    parameters[3].ParameterType == typeof(bool))
-                {
-                    allocateAt = candidate;
-                    allocateAtHasAllowAlternativeArg = true;
-                }
-            }
-        }
-
-        var innerProperty = type.GetProperty("Inner", BindingFlags.Public | BindingFlags.Instance);
-        return new Accessor(allocateAt, allocateAtOrAbove, allocateAtHasAllowAlternativeArg, innerProperty);
-    }
-
-    private readonly record struct Accessor(
-        MethodInfo? AllocateAt,
-        MethodInfo? AllocateAtOrAbove,
-        bool AllocateAtHasAllowAlternativeArg,
-        PropertyInfo? InnerProperty);
-}