[loader] cut import overhead

- Enable VertexPipelineStoresAndAtomics/FragmentStoresAndAtomics:
  fixes vkCreateGraphicsPipelines() rejecting guestBuffers storage
  descriptor as NonWritable in vertex/fragment stages.
- Enable ShaderInt64: fixes vkCreateShaderModule() rejecting SPIR-V
  using 64-bit integer capability.
- Query GetPhysicalDeviceFeatures first and only enable what the GPU
  actually reports as supported, with a warning fallback otherwise.

Also adds optional Vulkan Validation Layers (SHARPEMU_VK_VALIDATION=1)
to surface these VUID errors during development instead of silent
VK_ERROR_DEVICE_LOST.

.gitignore

@@ -37,5 +37,3 @@ packages/
 Thumbs.db
 Desktop.ini
 ehthumbs.db
-
-.vs/

Directory.Packages.props

@@ -1,4 +1,4 @@
-<!--
+<!--
 Copyright (C) 2026 SharpEmu Emulator Project
 SPDX-License-Identifier: GPL-2.0-or-later
 -->
@@ -7,16 +7,10 @@ SPDX-License-Identifier: GPL-2.0-or-later
     <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>

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" />

global.json

@@ -1,6 +1,6 @@
 {
     "sdk": {
         "version": "10.0.103",
-        "rollForward": "latestFeature"
+        "rollForward": "disable"
     }
 }

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;
@@ -25,32 +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)
     {
-        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();
-
         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;
@@ -122,58 +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);
-    }
-
-    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;
@@ -743,32 +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

@@ -7,19 +7,16 @@ 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
-         console window; CLI mode re-attaches to the parent terminal's console. -->
-    <OutputType>WinExe</OutputType>
+    <OutputType>Exe</OutputType>
     <AssemblyName>SharpEmu</AssemblyName>
     <RuntimeIdentifiers>win-x64;linux-x64;osx-arm64</RuntimeIdentifiers>
     <SelfContained>true</SelfContained>
     <PublishSingleFile>true</PublishSingleFile>
-    <IncludeNativeLibrariesForSelfExtract>true</IncludeNativeLibrariesForSelfExtract>
+    <!-- <IncludeNativeLibrariesForSelfExtract>true</IncludeNativeLibrariesForSelfExtract> -->
     <EnableCompressionInSingleFile>true</EnableCompressionInSingleFile>
     <ImplicitUsings>enable</ImplicitUsings>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
@@ -38,10 +35,6 @@ SPDX-License-Identifier: GPL-2.0-or-later
     <Win32Icon>..\..\assets\images\SharpEmu.ico</Win32Icon>
   </PropertyGroup>
 
-  <PropertyGroup>
-    <NoWarn>$(NoWarn);1591</NoWarn>
-  </PropertyGroup>
-  
   <ItemGroup>
     <Content Include="..\..\LICENSE.txt">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
@@ -50,17 +43,4 @@ 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

@@ -4,108 +4,9 @@
     "net10.0": {
       "Microsoft.NET.ILLink.Tasks": {
         "type": "Direct",
-        "requested": "[10.0.9, )",
-        "resolved": "10.0.9",
-        "contentHash": "4Iw41e2h7I4t70SJcX2GCmbyKJIlA273Cfm9RJMM050/3VBejGAG1KcthP5Z2L6SQcbfbf6BhNWO26+ZG+GzMg=="
-      },
-      "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=="
+        "requested": "[10.0.3, )",
+        "resolved": "10.0.3",
+        "contentHash": "0B6nZyCHWXnvmlB559oduOspVdNOnpNXPjhpWVMovLPAsDVG7A4jJR9rzECf67JUzxP8/ee/wA8clwIzJcWNFA=="
       },
       "Microsoft.DotNet.PlatformAbstractions": {
         "type": "Transitive",
@@ -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",
@@ -204,16 +73,6 @@
           "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, )",
-          "Tmds.DBus.Protocol": "[0.21.3, )"
-        }
-      },
       "sharpemu.hle": {
         "type": "Project"
       },
@@ -230,48 +89,6 @@
       "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, )",
@@ -316,61 +133,9 @@
           "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",
@@ -378,52 +143,6 @@
       }
     },
     "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",
@@ -431,52 +150,6 @@
       }
     },
     "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

@@ -415,8 +415,8 @@ public sealed class CpuDispatcher : ICpuDispatcher, IDisposable
 
         const ulong entryParamsSize = 0x20;
         var entryParamsAddress = AlignDown(argv0Address - entryParamsSize, 16);
-        if (!context.TryWriteUInt32(entryParamsAddress + 0x00, 1) ||
-            !context.TryWriteUInt32(entryParamsAddress + 0x04, 0) ||
+        if (!TryWriteUInt32(context, entryParamsAddress + 0x00, 1) ||
+            !TryWriteUInt32(context, entryParamsAddress + 0x04, 0) ||
             !context.TryWriteUInt64(entryParamsAddress + 0x08, argv0Address) ||
             !context.TryWriteUInt64(entryParamsAddress + 0x10, 0) ||
             !context.TryWriteUInt64(entryParamsAddress + 0x18, 0))
@@ -456,6 +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.Imports.cs

@@ -358,21 +358,12 @@ public sealed partial class DirectExecutionBackend
 					}
 					orbisGen2Result = (OrbisGen2Result)returnValue;
 				}
-                else if (importStubEntry.Export is { } mismatchedExport)
-                {
-                    dispatchResolved = true;
-                    orbisGen2Result = OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_IMPLEMENTED;
-                    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);
-                }
+				else
+				{
+					dispatchResolved = false;
+					orbisGen2Result = OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
+					cpuContext[CpuRegister.Rax] = unchecked((ulong)(int)orbisGen2Result);
+				}
 			}
 			finally
 			{

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

@@ -1679,14 +1679,10 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 			ptr2[num++] = 65;
 			ptr2[num++] = 95;
 			ptr2[num++] = 195;
-		uint num2 = default(uint);
-		if (!VirtualProtect(ptr, 192u, 32u, &num2))
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for import dispatch stub at 0x{(nint)ptr:X16}");
-			return 0;
-		}
-		FlushInstructionCache(GetCurrentProcess(), ptr, 192u);
-		return (nint)ptr;
+			uint num2 = default(uint);
+			VirtualProtect(ptr, 192u, 32u, &num2);
+			FlushInstructionCache(GetCurrentProcess(), ptr, 192u);
+			return (nint)ptr;
 		}
 		catch
 		{
@@ -1767,11 +1763,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		tlsHandlerAddress[num++] = 195;
 		_tlsPatchStubOffset = (num + 15) & ~15;
 		uint num2 = default(uint);
-		if (!VirtualProtect((void*)_tlsHandlerAddress, TlsHandlerRegionSize, 32u, &num2))
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for TLS handler at 0x{_tlsHandlerAddress:X16}");
-			return;
-		}
+		VirtualProtect((void*)_tlsHandlerAddress, TlsHandlerRegionSize, 32u, &num2);
 		FlushInstructionCache(GetCurrentProcess(), (void*)_tlsHandlerAddress, TlsHandlerRegionSize);
 		Console.Error.WriteLine($"[LOADER][INFO] TLS handler at 0x{_tlsHandlerAddress:X16}");
 	}
@@ -1792,11 +1784,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 			ptr2[i] = 144;
 		}
 		uint num = default(uint);
-		if (!VirtualProtect(ptr, 4096u, 32u, &num))
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for unresolved return stub at 0x{(nint)ptr:X16}");
-			return 0;
-		}
+		VirtualProtect(ptr, 4096u, 32u, &num);
 		FlushInstructionCache(GetCurrentProcess(), ptr, 16u);
 		return (nint)ptr;
 	}
@@ -1843,11 +1831,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 		EmitByte(code, ref offset, 0xC3);
 
 		uint oldProtect = default;
-		if (!VirtualProtect(ptr, stubSize, 32u, &oldProtect))
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for guest return stub at 0x{(nint)ptr:X16}");
-			return 0;
-		}
+		VirtualProtect(ptr, stubSize, 32u, &oldProtect);
 		FlushInstructionCache(GetCurrentProcess(), ptr, (nuint)offset);
 		return (nint)ptr;
 	}
@@ -1939,11 +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))
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for exception handler trampoline at 0x{(nint)ptr:X16}");
-			return 0;
-		}
+		VirtualProtect(ptr, stubSize, 32u, &oldProtect);
 		FlushInstructionCache(GetCurrentProcess(), ptr, (nuint)offset);
 		return (nint)ptr;
 	}
@@ -2274,11 +2254,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 			ptr[num2++] = 144;
 		}
 		uint flNewProtect = default(uint);
-		if (!VirtualProtect((void*)num, 32u, 32u, &flNewProtect))
-		{
-			Console.Error.WriteLine($"[LOADER][ERROR] VirtualProtect failed for TLS store helper at 0x{num:X16}");
-			return 0;
-		}
+		VirtualProtect((void*)num, 32u, 32u, &flNewProtect);
 		FlushInstructionCache(GetCurrentProcess(), (void*)num, 32u);
 		return num;
 	}
@@ -3615,11 +3591,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 				return GuestNativeCallExitReason.Exception;
 			}
 			uint oldProtect = default(uint);
-			if (!VirtualProtect(ptr, stubSize, 64u, &oldProtect))
-			{
-				reason = $"VirtualProtect failed for guest thread entry stub at 0x{(nint)ptr:X16}";
-				return GuestNativeCallExitReason.Exception;
-			}
+			VirtualProtect(ptr, stubSize, 64u, &oldProtect);
 			FlushInstructionCache(GetCurrentProcess(), ptr, stubSize);
 			TlsSetValue(_hostRspSlotTlsIndex, (nint)hostRspSlot);
 			ActiveGuestThreadYieldRequested = false;
@@ -3756,11 +3728,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 				return GuestNativeCallExitReason.Exception;
 			}
 			uint oldProtect = default(uint);
-			if (!VirtualProtect(ptr, stubSize, 64u, &oldProtect))
-			{
-				reason = $"VirtualProtect failed for guest continuation stub at 0x{(nint)ptr:X16}";
-				return GuestNativeCallExitReason.Exception;
-			}
+			VirtualProtect(ptr, stubSize, 64u, &oldProtect);
 			FlushInstructionCache(GetCurrentProcess(), ptr, stubSize);
 			TlsSetValue(_hostRspSlotTlsIndex, (nint)hostRspSlot);
 			ActiveGuestThreadYieldRequested = false;
@@ -4020,12 +3988,7 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
 				return false;
 			}
 			uint num5 = default(uint);
-			if (!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;
-			}
+			VirtualProtect(ptr, stubSize, 64u, &num5);
 			FlushInstructionCache(GetCurrentProcess(), ptr, stubSize);
 			if (_hostRspSlotStorage != 0)
 			{

src/SharpEmu.Core/Memory/PhysicalVirtualMemory.cs

@@ -55,11 +55,7 @@ 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();
-
-    [DllImport("kernel32.dll", SetLastError = true)]
-    [return: MarshalAs(UnmanagedType.Bool)]
-    private static extern bool FlushInstructionCache(void* hProcess, void* lpBaseAddress, nuint dwSize);
+    private static extern void FlushInstructionCache(void* hProcess, void* lpBaseAddress, nuint dwSize);
 
     public bool TryAllocateAtExact(ulong desiredAddress, ulong size, bool executable, out ulong actualAddress)
     {
@@ -455,7 +451,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
 
         if ((flags & ProgramHeaderFlags.Execute) != 0)
         {
-            FlushInstructionCache(GetCurrentProcess(), (void*)address, (nuint)size);
+            FlushInstructionCache(null, (void*)address, (nuint)size);
         }
     }
 
@@ -703,7 +699,7 @@ 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);
                 }
             }
 

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.GUI/App.axaml

@@ -1,118 +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>
-
-    <SolidColorBrush x:Key="BgBrush" Color="#0D1017" />
-    <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" />
-  </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="10" />
-      <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="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="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>
-
-    <Style Selector="ListBox.library ListBoxItem">
-      <Setter Property="CornerRadius" Value="8" />
-      <Setter Property="Margin" Value="4,2" />
-      <Setter Property="Padding" Value="8,4" />
-    </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/EmulatorProcess.cs

@@ -1,645 +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;
-            }
-
-            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 CloseHandle(nint handle);
-}

src/SharpEmu.GUI/GameEntry.cs

@@ -1,22 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-namespace SharpEmu.GUI;
-
-public sealed record GameEntry(string Name, string? TitleId, string Path, long SizeBytes)
-{
-    public string Detail => TitleId is not null
-        ? $"{TitleId}  •  {FormatSize(SizeBytes)}"
-        : $"{FormatSize(SizeBytes)}  •  {Path}";
-
-    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

@@ -1,64 +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();
-
-    public string LogLevel { get; set; } = "Info";
-
-    public int ImportTraceLimit { get; set; }
-
-    public bool StrictDynlibResolution { get; set; }
-
-    public string? EmulatorPath { get; set; }
-
-    // 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

@@ -1,157 +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="800"
-        MinWidth="980" MinHeight="620"
-        WindowStartupLocation="CenterScreen"
-        Background="{StaticResource BgBrush}"
-        ExtendClientAreaToDecorationsHint="True"
-        ExtendClientAreaChromeHints="PreferSystemChrome"
-        ExtendClientAreaTitleBarHeightHint="44"
-        Icon="avares://SharpEmu.GUI/Assets/SharpEmu.ico">
-
-  <Grid RowDefinitions="44,*,32">
-
-    <!-- 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/logo.png" Width="20" Height="20" />
-        <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="14" ColumnDefinitions="360,14,*">
-
-      <!-- Game library -->
-      <Border Grid.Column="0" Classes="card" Padding="0">
-        <Grid RowDefinitions="Auto,Auto,*,Auto">
-          <Grid Grid.Row="0" ColumnDefinitions="*,Auto" Margin="16,16,16,10">
-            <TextBlock Classes="sectionTitle" Text="GAME LIBRARY" VerticalAlignment="Center" />
-            <Border Grid.Column="1" Classes="pill">
-              <TextBlock x:Name="GameCountText" Text="0" FontSize="11" Foreground="{StaticResource MutedBrush}" />
-            </Border>
-          </Grid>
-
-          <TextBox Grid.Row="1" x:Name="SearchBox" Watermark="Search games…" Margin="12,0,12,8" CornerRadius="8" />
-
-          <ListBox Grid.Row="2" x:Name="GameList" Classes="library" Background="Transparent" Margin="8,0">
-            <ListBox.ItemTemplate>
-              <DataTemplate>
-                <StackPanel Margin="4,4" Spacing="2">
-                  <TextBlock Text="{Binding Name}" FontSize="14" FontWeight="SemiBold" TextTrimming="CharacterEllipsis" />
-                  <TextBlock Text="{Binding Detail}" FontSize="11" Foreground="{StaticResource MutedBrush}" TextTrimming="CharacterEllipsis" />
-                </StackPanel>
-              </DataTemplate>
-            </ListBox.ItemTemplate>
-          </ListBox>
-
-          <StackPanel Grid.Row="3" Orientation="Horizontal" Spacing="8" Margin="16,12,16,16">
-            <Button x:Name="AddFolderButton" Classes="ghost" Content="＋ Add folder" />
-            <Button x:Name="RescanButton" Classes="ghost" Content="⟳ Rescan" />
-            <Button x:Name="OpenFileButton" Classes="ghost" Content="Open file…" />
-          </StackPanel>
-        </Grid>
-      </Border>
-
-      <!-- Right column -->
-      <Grid Grid.Column="2" RowDefinitions="Auto,12,Auto,12,*">
-
-        <!-- Selected game / launch -->
-        <Border Grid.Row="0" Classes="card">
-          <Grid ColumnDefinitions="*,Auto">
-            <StackPanel Grid.Column="0" Spacing="6" VerticalAlignment="Center">
-              <TextBlock x:Name="SelectedGameTitle" Text="No game selected" FontSize="20" FontWeight="Bold" TextTrimming="CharacterEllipsis" />
-              <TextBlock x:Name="SelectedGamePath" Text="Pick a game from the library, or open an eboot.bin directly."
-                         FontSize="12" Foreground="{StaticResource MutedBrush}" TextTrimming="CharacterEllipsis" />
-              <StackPanel Orientation="Horizontal" Spacing="8">
-                <Ellipse x:Name="StatusDot" Width="9" Height="9" Fill="{StaticResource FaintBrush}" VerticalAlignment="Center" />
-                <TextBlock x:Name="StatusText" Text="Idle" FontSize="12" Foreground="{StaticResource MutedBrush}" VerticalAlignment="Center" />
-              </StackPanel>
-            </StackPanel>
-            <StackPanel Grid.Column="1" Orientation="Horizontal" Spacing="10" VerticalAlignment="Center" Margin="16,0,0,0">
-              <Button x:Name="LaunchButton" Classes="accent" Content="▶  Launch" IsEnabled="False" />
-              <Button x:Name="StopButton" Classes="danger" Content="■  Stop" IsEnabled="False" />
-            </StackPanel>
-          </Grid>
-        </Border>
-
-        <!-- Launch options -->
-        <Border Grid.Row="2" Classes="card">
-          <StackPanel Spacing="12">
-            <TextBlock Classes="sectionTitle" Text="LAUNCH OPTIONS" />
-            <WrapPanel>
-              <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>
-                <TextBlock Classes="fieldLabel" Text="Strict dynlib resolution" />
-                <ToggleSwitch x:Name="StrictToggle" OnContent="On" OffContent="Off" />
-              </StackPanel>
-            </WrapPanel>
-          </StackPanel>
-        </Border>
-
-        <!-- Console -->
-        <Border Grid.Row="4" Classes="card" Padding="0">
-          <Grid RowDefinitions="Auto,*">
-            <Grid Grid.Row="0" ColumnDefinitions="*,Auto,Auto,Auto" Margin="16,14,16,10">
-              <TextBlock Classes="sectionTitle" Text="CONSOLE" VerticalAlignment="Center" />
-              <CheckBox Grid.Column="1" x:Name="AutoScrollCheck" Content="Auto-scroll" IsChecked="True"
-                        FontSize="12" Margin="0,0,12,0" />
-              <Button Grid.Column="2" x:Name="CopyLogButton" Classes="ghost" Content="Copy" FontSize="12"
-                      Padding="10,4" Margin="0,0,8,0" />
-              <Button Grid.Column="3" 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="0,0,10,10">
-              <ListBox.ItemTemplate>
-                <DataTemplate>
-                  <TextBlock Text="{Binding Text}" Foreground="{Binding Brush}" TextWrapping="NoWrap" />
-                </DataTemplate>
-              </ListBox.ItemTemplate>
-            </ListBox>
-          </Grid>
-        </Border>
-      </Grid>
-    </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/MainWindow.axaml.cs

@@ -1,609 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using System.Collections.Concurrent;
-using System.Collections.ObjectModel;
-using System.Reflection;
-using System.Text.Json;
-using Avalonia.Controls;
-using Avalonia.Input;
-using Avalonia.Media;
-using Avalonia.Platform.Storage;
-using Avalonia.Threading;
-
-namespace SharpEmu.GUI;
-
-public partial class MainWindow : Window
-{
-    private const int MaxConsoleLines = 4000;
-
-    private static readonly IBrush DefaultLineBrush = new SolidColorBrush(Color.Parse("#C7CFDE"));
-    private static readonly IBrush DimLineBrush = new SolidColorBrush(Color.Parse("#6B7488"));
-    private static readonly IBrush InfoLineBrush = new SolidColorBrush(Color.Parse("#6FA8FF"));
-    private static readonly IBrush WarningLineBrush = new SolidColorBrush(Color.Parse("#E8B341"));
-    private static readonly IBrush ErrorLineBrush = new SolidColorBrush(Color.Parse("#F2777C"));
-    private static readonly IBrush SuccessLineBrush = new SolidColorBrush(Color.Parse("#63D489"));
-
-    private readonly List<GameEntry> _allGames = new();
-    private readonly ObservableCollection<GameEntry> _visibleGames = new();
-    private readonly ObservableCollection<LogLine> _consoleLines = new();
-    private readonly ConcurrentQueue<(string Line, bool IsError)> _pendingLines = new();
-    private readonly DispatcherTimer _consoleFlushTimer;
-
-    private GuiSettings _settings = new();
-    private EmulatorProcess? _emulator;
-    private string? _emulatorExePath;
-    private bool _isRunning;
-    private int _autoScrollTicks;
-
-    public MainWindow()
-    {
-        InitializeComponent();
-
-        GameList.ItemsSource = _visibleGames;
-        ConsoleList.ItemsSource = _consoleLines;
-
-        _consoleFlushTimer = new DispatcherTimer
-        {
-            Interval = TimeSpan.FromMilliseconds(80),
-        };
-        _consoleFlushTimer.Tick += (_, _) =>
-        {
-            FlushPendingConsoleLines();
-            MaybeAutoScroll();
-        };
-        _consoleFlushTimer.Start();
-
-        TitleBar.PointerPressed += OnTitleBarPointerPressed;
-        GameList.SelectionChanged += (_, _) => UpdateSelectedGame();
-        GameList.DoubleTapped += (_, _) => LaunchSelected();
-        SearchBox.TextChanged += (_, _) => RefreshVisibleGames();
-        AddFolderButton.Click += async (_, _) => await AddFolderAsync();
-        RescanButton.Click += async (_, _) => await RescanLibraryAsync();
-        OpenFileButton.Click += async (_, _) => await OpenFileAsync();
-        LaunchButton.Click += (_, _) => LaunchSelected();
-        StopButton.Click += (_, _) => _emulator?.Stop();
-        ClearLogButton.Click += (_, _) => _consoleLines.Clear();
-        CopyLogButton.Click += async (_, _) => await CopyConsoleAsync();
-
-        Opened += async (_, _) => await OnOpenedAsync();
-        Closing += (_, _) => OnWindowClosing();
-    }
-
-    private async Task OnOpenedAsync()
-    {
-        var version = Assembly.GetExecutingAssembly().GetName().Version;
-        if (version is not null)
-        {
-            VersionText.Text = $"v{version.ToString(3)}";
-        }
-
-        _settings = GuiSettings.Load();
-        ApplySettingsToControls();
-        LocateEmulator();
-        await RescanLibraryAsync();
-    }
-
-    private void OnWindowClosing()
-    {
-        ReadControlsIntoSettings();
-        _settings.Save();
-        _consoleFlushTimer.Stop();
-        _emulator?.Dispose();
-    }
-
-    private void OnTitleBarPointerPressed(object? sender, PointerPressedEventArgs e)
-    {
-        if (e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)
-        {
-            BeginMoveDrag(e);
-        }
-    }
-
-    // ---- Settings <-> controls ----
-
-    private void ApplySettingsToControls()
-    {
-        LogLevelBox.SelectedIndex = _settings.LogLevel.ToLowerInvariant() switch
-        {
-            "trace" => 0,
-            "debug" => 1,
-            "info" => 2,
-            "warning" or "warn" => 3,
-            "error" => 4,
-            "critical" or "fatal" => 5,
-            _ => 2,
-        };
-        TraceImportsBox.Value = Math.Clamp(_settings.ImportTraceLimit, 0, 4096);
-        StrictToggle.IsChecked = _settings.StrictDynlibResolution;
-    }
-
-    private void ReadControlsIntoSettings()
-    {
-        _settings.LogLevel = SelectedLogLevel();
-        _settings.ImportTraceLimit = (int)(TraceImportsBox.Value ?? 0);
-        _settings.StrictDynlibResolution = StrictToggle.IsChecked == true;
-    }
-
-    private string SelectedLogLevel()
-    {
-        return LogLevelBox.SelectedIndex switch
-        {
-            0 => "Trace",
-            1 => "Debug",
-            2 => "Info",
-            3 => "Warning",
-            4 => "Error",
-            5 => "Critical",
-            _ => "Info",
-        };
-    }
-
-    // ---- Emulator discovery ----
-
-    private void LocateEmulator()
-    {
-        var exeName = OperatingSystem.IsWindows() ? "SharpEmu.exe" : "SharpEmu";
-        var baseDirectory = AppContext.BaseDirectory;
-        var candidates = new List<string>();
-        if (!string.IsNullOrWhiteSpace(_settings.EmulatorPath))
-        {
-            candidates.Add(_settings.EmulatorPath);
-        }
-
-        // The GUI and the CLI are the same executable: with arguments it runs
-        // the emulator, so the preferred child process is this process itself.
-        if (Environment.ProcessPath is { } selfPath &&
-            Path.GetFileNameWithoutExtension(selfPath).Equals("SharpEmu", StringComparison.OrdinalIgnoreCase))
-        {
-            candidates.Add(selfPath);
-        }
-
-        candidates.Add(Path.Combine(baseDirectory, exeName));
-        candidates.Add(Path.Combine(baseDirectory, "win-x64", exeName));
-        candidates.Add(Path.Combine(baseDirectory, "..", exeName));
-
-        _emulatorExePath = candidates.FirstOrDefault(File.Exists) is { } found
-            ? Path.GetFullPath(found)
-            : null;
-
-        EmulatorPathText.Text = _emulatorExePath is not null
-            ? $"Emulator: {_emulatorExePath}"
-            : "Emulator: SharpEmu executable not found — build SharpEmu.CLI first.";
-    }
-
-    // ---- Game library ----
-
-    private async Task AddFolderAsync()
-    {
-        var folders = await StorageProvider.OpenFolderPickerAsync(new FolderPickerOpenOptions
-        {
-            Title = "Choose a folder containing games",
-            AllowMultiple = false,
-        });
-
-        var path = folders.FirstOrDefault()?.TryGetLocalPath();
-        if (string.IsNullOrEmpty(path))
-        {
-            return;
-        }
-
-        if (!_settings.GameFolders.Contains(path, StringComparer.OrdinalIgnoreCase))
-        {
-            _settings.GameFolders.Add(path);
-            _settings.Save();
-        }
-
-        await RescanLibraryAsync();
-    }
-
-    private async Task RescanLibraryAsync()
-    {
-        var folders = _settings.GameFolders.ToArray();
-        StatusBarRight.Text = "Scanning library…";
-
-        var games = await Task.Run(() => ScanFolders(folders));
-
-        _allGames.Clear();
-        _allGames.AddRange(games);
-        RefreshVisibleGames();
-        StatusBarRight.Text = folders.Length == 0
-            ? "Add a game folder to populate the library."
-            : $"Library scanned: {games.Count} game(s) in {folders.Length} folder(s).";
-    }
-
-    private static List<GameEntry> ScanFolders(IReadOnlyList<string> folders)
-    {
-        var games = new List<GameEntry>();
-        var seen = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
-        var enumeration = new EnumerationOptions
-        {
-            IgnoreInaccessible = true,
-            RecurseSubdirectories = true,
-            MaxRecursionDepth = 8,
-        };
-
-        foreach (var folder in folders)
-        {
-            if (!Directory.Exists(folder))
-            {
-                continue;
-            }
-
-            try
-            {
-                foreach (var file in Directory.EnumerateFiles(folder, "eboot.bin", enumeration))
-                {
-                    var fullPath = Path.GetFullPath(file);
-                    if (!seen.Add(fullPath))
-                    {
-                        continue;
-                    }
-
-                    long size = 0;
-                    try
-                    {
-                        size = new FileInfo(fullPath).Length;
-                    }
-                    catch (IOException)
-                    {
-                    }
-
-                    var (title, titleId) = TryReadParamJson(fullPath);
-                    games.Add(new GameEntry(title ?? GameNameFor(fullPath), titleId, fullPath, size));
-                }
-            }
-            catch (Exception)
-            {
-                // Skip folders that fail to enumerate.
-            }
-        }
-
-        games.Sort((a, b) => string.Compare(a.Name, b.Name, StringComparison.OrdinalIgnoreCase));
-        return games;
-    }
-
-    /// <summary>
-    /// Reads the game title and title id from sce_sys/param.json next to the
-    /// executable, when present.
-    /// </summary>
-    private static (string? Title, string? TitleId) TryReadParamJson(string ebootPath)
-    {
-        try
-        {
-            var directory = Path.GetDirectoryName(ebootPath);
-            if (directory is null)
-            {
-                return (null, null);
-            }
-
-            var paramPath = Path.Combine(directory, "sce_sys", "param.json");
-            if (!File.Exists(paramPath))
-            {
-                return (null, null);
-            }
-
-            // ReadAllText handles a UTF-8 BOM, which JsonDocument rejects in
-            // raw bytes.
-            using var document = JsonDocument.Parse(File.ReadAllText(paramPath));
-            var root = document.RootElement;
-
-            string? titleId = null;
-            if (root.TryGetProperty("titleId", out var idElement) && idElement.ValueKind == JsonValueKind.String)
-            {
-                titleId = idElement.GetString();
-            }
-
-            string? title = null;
-            if (root.TryGetProperty("localizedParameters", out var localized) &&
-                localized.ValueKind == JsonValueKind.Object)
-            {
-                if (localized.TryGetProperty("defaultLanguage", out var language) &&
-                    language.ValueKind == JsonValueKind.String &&
-                    localized.TryGetProperty(language.GetString()!, out var defaultBlock) &&
-                    defaultBlock.ValueKind == JsonValueKind.Object &&
-                    defaultBlock.TryGetProperty("titleName", out var titleName) &&
-                    titleName.ValueKind == JsonValueKind.String)
-                {
-                    title = titleName.GetString();
-                }
-                else
-                {
-                    foreach (var property in localized.EnumerateObject())
-                    {
-                        if (property.Value.ValueKind == JsonValueKind.Object &&
-                            property.Value.TryGetProperty("titleName", out var anyTitleName) &&
-                            anyTitleName.ValueKind == JsonValueKind.String)
-                        {
-                            title = anyTitleName.GetString();
-                            break;
-                        }
-                    }
-                }
-            }
-
-            return (
-                string.IsNullOrWhiteSpace(title) ? null : title,
-                string.IsNullOrWhiteSpace(titleId) ? null : titleId);
-        }
-        catch (Exception)
-        {
-            return (null, null);
-        }
-    }
-
-    private static string GameNameFor(string ebootPath)
-    {
-        var directory = Path.GetDirectoryName(ebootPath);
-        var name = directory is not null ? Path.GetFileName(directory) : null;
-        return string.IsNullOrEmpty(name) ? Path.GetFileName(ebootPath) : name;
-    }
-
-    private void RefreshVisibleGames()
-    {
-        var query = SearchBox.Text?.Trim() ?? string.Empty;
-        var selected = GameList.SelectedItem as GameEntry;
-
-        _visibleGames.Clear();
-        foreach (var game in _allGames)
-        {
-            if (query.Length == 0 ||
-                game.Name.Contains(query, StringComparison.OrdinalIgnoreCase) ||
-                game.Path.Contains(query, StringComparison.OrdinalIgnoreCase))
-            {
-                _visibleGames.Add(game);
-            }
-        }
-
-        GameCountText.Text = _visibleGames.Count.ToString();
-        if (selected is not null && _visibleGames.Contains(selected))
-        {
-            GameList.SelectedItem = selected;
-        }
-
-        UpdateSelectedGame();
-    }
-
-    private void UpdateSelectedGame()
-    {
-        if (GameList.SelectedItem is GameEntry game)
-        {
-            SelectedGameTitle.Text = game.Name;
-            SelectedGamePath.Text = game.Path;
-        }
-        else
-        {
-            SelectedGameTitle.Text = "No game selected";
-            SelectedGamePath.Text = "Pick a game from the library, or open an eboot.bin directly.";
-        }
-
-        UpdateRunButtons();
-    }
-
-    // ---- Launching ----
-
-    private async Task OpenFileAsync()
-    {
-        var files = await StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
-        {
-            Title = "Open an executable to launch",
-            AllowMultiple = false,
-            FileTypeFilter = new[]
-            {
-                new FilePickerFileType("PS executables") { Patterns = new[] { "eboot.bin", "*.bin", "*.self", "*.elf" } },
-                FilePickerFileTypes.All,
-            },
-        });
-
-        var path = files.FirstOrDefault()?.TryGetLocalPath();
-        if (!string.IsNullOrEmpty(path))
-        {
-            Launch(path, Path.GetFileName(path));
-        }
-    }
-
-    private void LaunchSelected()
-    {
-        if (GameList.SelectedItem is GameEntry game)
-        {
-            Launch(game.Path, game.Name);
-        }
-    }
-
-    private void Launch(string ebootPath, string displayName)
-    {
-        if (_isRunning)
-        {
-            return;
-        }
-
-        if (_emulatorExePath is null)
-        {
-            LocateEmulator();
-            if (_emulatorExePath is null)
-            {
-                AppendConsoleLine("SharpEmu executable not found. Build the SharpEmu.CLI project first (dotnet build).", ErrorLineBrush);
-                return;
-            }
-        }
-
-        ReadControlsIntoSettings();
-        _settings.Save();
-
-        var arguments = new List<string>
-        {
-            "--cpu-engine=native",
-            $"--log-level={_settings.LogLevel.ToLowerInvariant()}",
-        };
-        if (_settings.StrictDynlibResolution)
-        {
-            arguments.Add("--strict");
-        }
-
-        if (_settings.ImportTraceLimit > 0)
-        {
-            arguments.Add($"--trace-imports={_settings.ImportTraceLimit}");
-        }
-
-        arguments.Add(ebootPath);
-
-        _consoleLines.Clear();
-        AppendConsoleLine($"$ SharpEmu {string.Join(' ', arguments)}", DimLineBrush);
-
-        var emulator = new EmulatorProcess();
-        emulator.OutputReceived += (line, isError) => _pendingLines.Enqueue((line, isError));
-        emulator.Exited += code => Dispatcher.UIThread.Post(() => OnEmulatorExited(code));
-
-        try
-        {
-            emulator.Start(_emulatorExePath, arguments, Path.GetDirectoryName(ebootPath));
-        }
-        catch (Exception ex)
-        {
-            emulator.Dispose();
-            AppendConsoleLine($"Failed to start the emulator: {ex.Message}", ErrorLineBrush);
-            return;
-        }
-
-        _emulator = emulator;
-        _isRunning = true;
-        StatusDot.Fill = SuccessLineBrush;
-        StatusText.Text = $"Running — {displayName}";
-        StatusBarRight.Text = $"Running {displayName}";
-        UpdateRunButtons();
-    }
-
-    private void OnEmulatorExited(int exitCode)
-    {
-        FlushPendingConsoleLines();
-        _isRunning = false;
-        _emulator?.Dispose();
-        _emulator = null;
-
-        var meaning = exitCode switch
-        {
-            0 => "OK",
-            1 => "invalid arguments",
-            2 => "eboot not found",
-            3 => "runtime exception",
-            4 => "emulation error",
-            _ => "unknown",
-        };
-        var brush = exitCode == 0 ? SuccessLineBrush : ErrorLineBrush;
-        AppendConsoleLine($"Process exited with code {exitCode} ({meaning}).", brush);
-
-        StatusDot.Fill = exitCode == 0 ? (IBrush)SuccessLineBrush : ErrorLineBrush;
-        StatusText.Text = $"Exited with code {exitCode} ({meaning})";
-        StatusBarRight.Text = "Idle";
-        UpdateRunButtons();
-    }
-
-    private void UpdateRunButtons()
-    {
-        LaunchButton.IsEnabled = !_isRunning && GameList.SelectedItem is GameEntry;
-        StopButton.IsEnabled = _isRunning;
-        OpenFileButton.IsEnabled = !_isRunning;
-    }
-
-    // ---- Console ----
-
-    private void FlushPendingConsoleLines()
-    {
-        if (_pendingLines.IsEmpty)
-        {
-            return;
-        }
-
-        var incoming = new List<LogLine>();
-        while (_pendingLines.TryDequeue(out var pending))
-        {
-            incoming.Add(new LogLine(pending.Line, BrushForLine(pending.Line)));
-        }
-
-        if (incoming.Count >= MaxConsoleLines)
-        {
-            // A burst larger than the cap: keep only the newest lines.
-            _consoleLines.Clear();
-            for (var i = incoming.Count - MaxConsoleLines; i < incoming.Count; i++)
-            {
-                _consoleLines.Add(incoming[i]);
-            }
-        }
-        else
-        {
-            var overflow = _consoleLines.Count + incoming.Count - MaxConsoleLines;
-            for (var i = 0; i < overflow; i++)
-            {
-                _consoleLines.RemoveAt(0);
-            }
-
-            foreach (var line in incoming)
-            {
-                _consoleLines.Add(line);
-            }
-        }
-
-        _autoScrollTicks = 3;
-    }
-
-    private void AppendConsoleLine(string text, IBrush brush)
-    {
-        _consoleLines.Add(new LogLine(text, brush));
-        _autoScrollTicks = 3;
-        MaybeAutoScroll();
-    }
-
-    private void MaybeAutoScroll()
-    {
-        // ScrollToEnd is applied over a few flush-timer ticks because the
-        // virtualizing panel re-estimates its extent after large batches, and
-        // a single scroll can land short of the true end. A synchronous
-        // ScrollIntoView during rapid adds is avoided entirely — it can crash
-        // the panel with "Invalid Arrange rectangle".
-        if (_autoScrollTicks <= 0 || AutoScrollCheck.IsChecked != true)
-        {
-            return;
-        }
-
-        _autoScrollTicks--;
-        (ConsoleList.Scroll as ScrollViewer)?.ScrollToEnd();
-    }
-
-    private static IBrush BrushForLine(string line)
-    {
-        if (line.Contains("[ERROR]", StringComparison.Ordinal) ||
-            line.Contains("[CRITICAL]", StringComparison.Ordinal))
-        {
-            return ErrorLineBrush;
-        }
-
-        if (line.Contains("[WARNING]", StringComparison.Ordinal))
-        {
-            return WarningLineBrush;
-        }
-
-        if (line.Contains("[INFO]", StringComparison.Ordinal))
-        {
-            return InfoLineBrush;
-        }
-
-        if (line.Contains("[DEBUG]", StringComparison.Ordinal) ||
-            line.Contains("[TRACE]", StringComparison.Ordinal))
-        {
-            return DimLineBrush;
-        }
-
-        return DefaultLineBrush;
-    }
-
-    private async Task CopyConsoleAsync()
-    {
-        if (_consoleLines.Count == 0 || Clipboard is null)
-        {
-            return;
-        }
-
-        var text = string.Join(Environment.NewLine, _consoleLines.Select(line => line.Text));
-        await Clipboard.SetTextAsync(text);
-    }
-}

src/SharpEmu.GUI/SharpEmu.GUI.csproj

@@ -1,28 +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>
-
-  <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\logo.png" Link="Assets/logo.png" />
-    <AvaloniaResource Include="..\..\assets\images\SharpEmu.ico" Link="Assets/SharpEmu.ico" />
-  </ItemGroup>
-
-</Project>

src/SharpEmu.GUI/packages.lock.json

@@ -1,186 +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"
-        }
-      },
-      "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=="
-      },
-      "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=="
-      }
-    }
-  }
-}

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

@@ -47,7 +47,6 @@ public sealed class ModuleManager : IModuleManager
                     var handler = CreateHandler(type, method, instances);
                     if (!_dispatchTable.TryAdd(exportInfo.Value.Nid, handler))
                     {
-                        Console.Error.WriteLine($"[HLE] Duplicate NID '{exportInfo.Value.Nid}' ({exportInfo.Value.ExportName}) — already registered, skipping.");
                         continue;
                     }
 
@@ -106,7 +105,6 @@ public sealed class ModuleManager : IModuleManager
 
         if (!_dispatchTable.TryGetValue(nid, out var function) || !_exportTable.TryGetValue(nid, out var export))
         {
-            Console.Error.WriteLine($"[HLE] 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;
@@ -114,13 +112,11 @@ public sealed class ModuleManager : IModuleManager
 
         if ((export.Target & context.TargetGeneration) == 0)
         {
-            Console.Error.WriteLine($"[HLE] 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_IMPLEMENTED);
-            result = OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_IMPLEMENTED;
+            context[CpuRegister.Rax] = unchecked((ulong)(int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
+            result = OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
             return false;
         }
 
-
         context.ClearRaxWriteFlag();
         int ret = ((SysAbiFunction)function).Invoke(context);
 

src/SharpEmu.HLE/SharpEmu.HLE.csproj

@@ -8,10 +8,6 @@ SPDX-License-Identifier: GPL-2.0-or-later
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
-  <PropertyGroup>
-    <NoWarn>$(NoWarn);1591</NoWarn>
-  </PropertyGroup>
-
   <ItemGroup>
     <EmbeddedResource Include="Aerolib\aerolib.bin" />
   </ItemGroup>

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) ||
-            !ctx.TryReadUInt16(userDataAddress + 0x2A, out var shaderResourceTableSize) ||
-            !ctx.TryReadUInt16(userDataAddress + 0x2C, out var directResourceCount) ||
+        if (!TryReadUInt16(ctx, userDataAddress + 0x28, out var extendedUserDataSize) ||
+            !TryReadUInt16(ctx, userDataAddress + 0x2A, out var shaderResourceTableSize) ||
+            !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

@@ -294,7 +294,7 @@ 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 +317,7 @@ 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 +397,7 @@ 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 +418,7 @@ 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 +427,7 @@ 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 +1741,19 @@ 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/Ampr/AmprExports.cs

@@ -453,7 +453,7 @@ 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;
             }
@@ -883,6 +883,19 @@ 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/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

@@ -3,6 +3,7 @@
 
 using SharpEmu.HLE;
 using System.Buffers.Binary;
+using System.Threading;
 
 namespace SharpEmu.Libs.Audio;
 
@@ -36,7 +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];
@@ -47,8 +48,8 @@ public static class AudioOut2Exports
         BinaryPrimitives.WriteUInt32LittleEndian(param[0x0C..], 0x400);
 
         return ctx.Memory.TryWrite(paramAddress, param)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -62,7 +63,7 @@ public static class AudioOut2Exports
         var memoryInfoAddress = ctx[CpuRegister.Rsi];
         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);
         }
 
         Span<byte> memoryInfo = stackalloc byte[0x20];
@@ -73,8 +74,8 @@ public static class AudioOut2Exports
         BinaryPrimitives.WriteUInt64LittleEndian(memoryInfo[0x18..], AudioOut2ContextMemoryAlignment);
 
         return ctx.Memory.TryWrite(memoryInfoAddress, memoryInfo)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -90,13 +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)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+        return TryWriteUInt64(ctx, outContextAddress, handle)
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -104,7 +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",
@@ -119,14 +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)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+        return TryWriteUInt64(ctx, outPortAddress, handle)
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -140,7 +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);
@@ -153,8 +154,8 @@ public static class AudioOut2Exports
         BinaryPrimitives.WriteInt16LittleEndian(state[0x04..], -1);
 
         return ctx.Memory.TryWrite(stateAddress, state)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -167,7 +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];
@@ -177,8 +178,8 @@ public static class AudioOut2Exports
         BinaryPrimitives.WriteUInt32LittleEndian(info[0x08..], 48000);
 
         return ctx.Memory.TryWrite(infoAddress, info)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -186,14 +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",
@@ -206,12 +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)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+        return TryWriteUInt64(ctx, outUserAddress, handle)
+            ? SetReturn(ctx, 0)
+            : 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

@@ -2,9 +2,8 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 using SharpEmu.HLE;
-using System.Buffers;
 using System.Collections.Concurrent;
-using System.Diagnostics;
+using System.Threading;
 
 namespace SharpEmu.Libs.Audio;
 
@@ -13,77 +12,14 @@ 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();
-    }
+    private sealed record PortState(int UserId, int Type, uint BufferLength, uint Frequency, int Format);
 
     [SysAbiExport(
         Nid = "JfEPXVxhFqA",
         ExportName = "sceAudioOutInit",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libSceAudioOut")]
-    public static int AudioOutInit(CpuContext ctx) => ctx.SetReturn(0);
+    public static int AudioOutInit(CpuContext ctx) => SetReturn(ctx, 0);
 
     [SysAbiExport(
         Nid = "ekNvsT22rsY",
@@ -97,42 +33,14 @@ public static class AudioOutExports
         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))
+        if (bufferLength == 0 || frequency == 0)
         {
-            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}");
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         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);
+        Ports[handle] = new PortState(userId, type, bufferLength, frequency, format);
+        return SetReturn(ctx, handle);
     }
 
     [SysAbiExport(
@@ -143,13 +51,11 @@ public static class AudioOutExports
     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);
+        return SetReturn(
+            ctx,
+            Ports.TryRemove(handle, out _)
+                ? 0
+                : (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
     }
 
     [SysAbiExport(
@@ -159,44 +65,8 @@ public static class AudioOutExports
         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);
-        }
+        ctx[CpuRegister.Rax] = 0;
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
     }
 
     [SysAbiExport(
@@ -207,28 +77,16 @@ public static class AudioOutExports
     public static int AudioOutSetVolume(CpuContext ctx)
     {
         var handle = unchecked((int)ctx[CpuRegister.Rdi]);
-        return ctx.SetReturn(
+        return SetReturn(
+            ctx,
             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)
+    private static int SetReturn(CpuContext ctx, int result)
     {
-        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;
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
     }
 }

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

@@ -46,7 +46,8 @@ public static class AvPlayerExports
         var dataAddress = ctx[CpuRegister.Rsi];
         lock (StateGate)
         {
-            return ctx.SetReturn(
+            return SetReturn(
+                ctx,
                 handle != 0 && dataAddress != 0 && Players.Contains(handle)
                     ? 0
                     : InvalidParameters);
@@ -62,7 +63,15 @@ public static class AvPlayerExports
     {
         lock (StateGate)
         {
-            return ctx.SetReturn(Players.Remove(ctx[CpuRegister.Rdi]) ? 0 : InvalidParameters);
+            return SetReturn(
+                ctx,
+                Players.Remove(ctx[CpuRegister.Rdi]) ? 0 : InvalidParameters);
         }
     }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
+    }
 }

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)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn(FiberErrorInvalid);
+        return TryWriteUInt32(ctx, optParam, FiberOptSignature)
+            ? SetReturn(ctx, 0)
+            : 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);
-        return ctx.SetReturn(0);
+        _ = TryWriteUInt32(ctx, fiber + FiberStateOffset, FiberStateTerminated);
+        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)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn(FiberErrorInvalid);
+        return TryWriteUInt64(ctx, outAddress, fiberAddress)
+            ? SetReturn(ctx, 0)
+            : 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) ||
-            !ctx.TryWriteUInt64(info + 16, fields.ArgOnInitialize) ||
-            !ctx.TryWriteUInt64(info + 24, fields.ContextAddress) ||
-            !ctx.TryWriteUInt64(info + 32, fields.ContextSize) ||
+        if (!TryWriteUInt64(ctx, info + 8, fields.Entry) ||
+            !TryWriteUInt64(ctx, info + 16, fields.ArgOnInitialize) ||
+            !TryWriteUInt64(ctx, info + 24, fields.ContextAddress) ||
+            !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)
-            : ctx.SetReturn(FiberErrorInvalid);
+            ? SetReturn(ctx, 0)
+            : 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)
-            : ctx.SetReturn(FiberErrorState);
+            ? SetReturn(ctx, 0)
+            : 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)
-            : ctx.SetReturn(FiberErrorState);
+            ? SetReturn(ctx, 0)
+            : 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])
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn(FiberErrorInvalid);
+        return TryWriteUInt64(ctx, outAddress, ctx[CpuRegister.Rbp])
+            ? SetReturn(ctx, 0)
+            : 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) ||
-            !ctx.TryWriteUInt32(fiber + FiberStateOffset, FiberStateIdle) ||
-            !ctx.TryWriteUInt64(fiber + FiberEntryOffset, entry) ||
-            !ctx.TryWriteUInt64(fiber + FiberArgOnInitializeOffset, argOnInitialize) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextAddressOffset, contextAddress) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextSizeOffset, contextSize) ||
+        if (!TryWriteUInt32(ctx, fiber + FiberMagicStartOffset, FiberSignature0) ||
+            !TryWriteUInt32(ctx, fiber + FiberStateOffset, FiberStateIdle) ||
+            !TryWriteUInt64(ctx, fiber + FiberEntryOffset, entry) ||
+            !TryWriteUInt64(ctx, fiber + FiberArgOnInitializeOffset, argOnInitialize) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextAddressOffset, contextAddress) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextSizeOffset, contextSize) ||
             !TryWriteName(ctx, fiber + FiberNameOffset, name) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextPointerOffset, 0) ||
-            !ctx.TryWriteUInt32(fiber + FiberFlagsOffset, flags) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextStartOffset, contextAddress) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextEndOffset, contextAddress == 0 ? 0 : contextAddress + contextSize) ||
-            !ctx.TryWriteUInt32(fiber + FiberMagicEndOffset, FiberSignature1))
+            !TryWriteUInt64(ctx, fiber + FiberContextPointerOffset, 0) ||
+            !TryWriteUInt32(ctx, fiber + FiberFlagsOffset, flags) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextStartOffset, contextAddress) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextEndOffset, contextAddress == 0 ? 0 : contextAddress + contextSize) ||
+            !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) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextSizeOffset, contextSize) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextStartOffset, contextAddress) ||
-            !ctx.TryWriteUInt64(fiber + FiberContextEndOffset, contextAddress + contextSize) ||
-            !ctx.TryWriteUInt64(contextAddress, FiberStackSignature))
+        if (!TryWriteUInt64(ctx, fiber + FiberContextAddressOffset, contextAddress) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextSizeOffset, contextSize) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextStartOffset, contextAddress) ||
+            !TryWriteUInt64(ctx, fiber + FiberContextEndOffset, contextAddress + contextSize) ||
+            !TryWriteUInt64(ctx, contextAddress, FiberStackSignature))
         {
             return FiberErrorInvalid;
         }
@@ -839,8 +839,8 @@ public static class FiberExports
             return false;
         }
 
-        if (!ctx.TryReadUInt32(fiber + FiberMagicStartOffset, out var magicStart) ||
-            !ctx.TryReadUInt32(fiber + FiberMagicEndOffset, out var magicEnd) ||
+        if (!TryReadUInt32(ctx, fiber + FiberMagicStartOffset, out var magicStart) ||
+            !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) ||
-            !ctx.TryReadUInt64(fiber + FiberEntryOffset, out var entry) ||
-            !ctx.TryReadUInt64(fiber + FiberArgOnInitializeOffset, out var argOnInitialize) ||
-            !ctx.TryReadUInt64(fiber + FiberContextAddressOffset, out var contextAddress) ||
-            !ctx.TryReadUInt64(fiber + FiberContextSizeOffset, out var contextSize) ||
-            !ctx.TryReadUInt32(fiber + FiberFlagsOffset, out var flags) ||
+        if (!TryReadUInt32(ctx, fiber + FiberStateOffset, out var state) ||
+            !TryReadUInt64(ctx, fiber + FiberEntryOffset, out var entry) ||
+            !TryReadUInt64(ctx, fiber + FiberArgOnInitializeOffset, out var argOnInitialize) ||
+            !TryReadUInt64(ctx, fiber + FiberContextAddressOffset, out var contextAddress) ||
+            !TryReadUInt64(ctx, fiber + FiberContextSizeOffset, out var contextSize) ||
+            !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/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;
         }
@@ -177,6 +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

@@ -287,13 +287,13 @@ public static class KernelEventQueueCompatExports
         }
 
         uint timeoutUsec = 0;
-        if (timeoutAddress != 0 && !ctx.TryReadUInt32(timeoutAddress, out timeoutUsec))
+        if (timeoutAddress != 0 && !TryReadUInt32(ctx, 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;
         }
@@ -336,7 +336,7 @@ public static class KernelEventQueueCompatExports
             }
 
             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;
             }
@@ -541,7 +541,7 @@ 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;
         }
@@ -654,8 +654,29 @@ 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);
+    }
+
+    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;
+    }
 }

src/SharpEmu.Libs/Kernel/KernelExports.cs

@@ -8,6 +8,7 @@ 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();

src/SharpEmu.Libs/Kernel/KernelMemoryCompatExports.cs

@@ -7,7 +7,9 @@ using System.Buffers;
 using System.Buffers.Binary;
 using System.Collections.Concurrent;
 using System.Text;
+using System.Threading;
 using System.Runtime.InteropServices;
+using System.Linq;
 using System.Globalization;
 
 namespace SharpEmu.Libs.Kernel;
@@ -2529,17 +2531,6 @@ public static class KernelMemoryCompatExports
             if (fixedMapping && requestedAddress != 0)
             {
                 mappedAddress = requestedAddress;
-                reserved = IsGuestRangeBacked(ctx, requestedAddress, length);
-                if (!reserved)
-                {
-                    TryReserveExactGuestVirtualRange(ctx, requestedAddress, length, protection);
-                    reserved = IsGuestRangeBacked(ctx, requestedAddress, length);
-                }
-
-                if (!reserved)
-                {
-                    mappedAddress = 0;
-                }
             }
             else
             {
@@ -2550,7 +2541,7 @@ public static class KernelMemoryCompatExports
                 Console.Error.WriteLine(
                     $"[LOADER][TRACE] map_direct reserve: requested=0x{requestedAddress:X16} desired=0x{desiredAddress:X16} reserved={reserved} mapped=0x{mappedAddress:X16}");
             }
-            if (!reserved && !fixedMapping)
+            if (!reserved)
             {
                 if (mappedAddress == 0)
                 {
@@ -2634,18 +2625,12 @@ public static class KernelMemoryCompatExports
             if (fixedMapping && requestedAddress != 0)
             {
                 mappedAddress = requestedAddress;
-                if (!IsGuestRangeBacked(ctx, requestedAddress, length))
-                {
-                    TryReserveExactGuestVirtualRange(ctx, requestedAddress, length, protection);
-                    if (!IsGuestRangeBacked(ctx, requestedAddress, length))
-                    {
-                        mappedAddress = 0;
-                    }
-                }
             }
             else if (!TryReserveGuestVirtualRange(ctx, desiredAddress, length, protection, OrbisPageSize, out mappedAddress))
             {
-                mappedAddress = AllocateMappedGuestAddress(ctx, length, 0x1000UL);
+                mappedAddress = requestedAddress != 0 && fixedMapping
+                    ? requestedAddress
+                    : AllocateMappedGuestAddress(ctx, length, 0x1000UL);
             }
 
             if (ShouldTraceDirectMemory())
@@ -2903,7 +2888,7 @@ public static class KernelMemoryCompatExports
                     return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
                 }
 
-                if (protectionOut != 0 && !ctx.TryWriteInt32(protectionOut, region.Protection))
+                if (protectionOut != 0 && !TryWriteInt32(ctx, protectionOut, region.Protection))
                 {
                     return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
                 }
@@ -2942,7 +2927,7 @@ public static class KernelMemoryCompatExports
 
                 if (!ctx.TryWriteUInt64(infoAddress, block.Start) ||
                     !ctx.TryWriteUInt64(infoAddress + sizeof(ulong), block.Start + block.Length) ||
-                    !ctx.TryWriteInt32(infoAddress + (sizeof(ulong) * 2), block.MemoryType))
+                    !TryWriteInt32(ctx, infoAddress + (sizeof(ulong) * 2), block.MemoryType))
                 {
                     return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
                 }
@@ -3800,7 +3785,7 @@ public static class KernelMemoryCompatExports
                         var addr = argumentSource.NextGpArg();
                         if (addr != 0)
                         {
-                            _ = ctx.TryWriteInt32(addr, sb.Length);
+                            _ = TryWriteInt32(ctx, addr, sb.Length);
                         }
                     }
                     break;
@@ -4010,37 +3995,6 @@ public static class KernelMemoryCompatExports
             out mappedAddress);
     }
 
-    private static bool TryReserveExactGuestVirtualRange(
-        CpuContext ctx,
-        ulong desiredAddress,
-        ulong length,
-        int protection)
-    {
-        var executable = (protection & OrbisProtCpuExec) != 0;
-        return KernelVirtualRangeAllocator.TryReserve(
-            ctx,
-            desiredAddress,
-            length,
-            executable,
-            alignment: 0,
-            allowSearch: false,
-            allowAllocateAtAlternative: false,
-            "reserve fixed range",
-            out _);
-    }
-
-    private static bool IsGuestRangeBacked(CpuContext ctx, ulong address, ulong length)
-    {
-        if (address == 0 || length == 0 || ulong.MaxValue - address < length - 1)
-        {
-            return false;
-        }
-
-        Span<byte> probe = stackalloc byte[1];
-        return ctx.Memory.TryRead(address, probe) &&
-               ctx.Memory.TryRead(address + length - 1, probe);
-    }
-
     private static bool IsMappedGuestRangeAvailable(
         CpuContext ctx,
         ulong address,
@@ -4525,7 +4479,7 @@ public static class KernelMemoryCompatExports
                 continue;
             }
 
-            var one = chunk.AsSpan(0, 1);
+            Span<byte> one = stackalloc byte[1];
             if (!TryReadCompat(ctx, current, one))
             {
                 return false;
@@ -4964,7 +4918,7 @@ public static class KernelMemoryCompatExports
             processedCount++;
         }
 
-        if (processedOutAddress != 0 && !ctx.TryWriteInt32(processedOutAddress, processedCount))
+        if (processedOutAddress != 0 && !TryWriteInt32(ctx, processedOutAddress, processedCount))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -5801,6 +5755,13 @@ public static class KernelMemoryCompatExports
         return (protect & expected) != 0;
     }
 
+    private static bool TryWriteInt32(CpuContext ctx, ulong address, int value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(int)];
+        BitConverter.TryWriteBytes(bytes, value);
+        return ctx.Memory.TryWrite(address, bytes);
+    }
+
     private static bool TryWriteOpenDescriptorStat(CpuContext ctx, int fd, ulong statAddress)
     {
         if (fd is 0 or 1 or 2)

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;
@@ -327,12 +329,6 @@ 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 +383,42 @@ 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 +434,21 @@ 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 +456,7 @@ 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 +1018,19 @@ public static class KernelPthreadCompatExports
     }
 
     private static bool InitializeMutexObject(CpuContext ctx, ulong address, PthreadMutexState state) =>
-        ctx.TryWriteUInt32(address + 0x20, unchecked((uint)state.Type)) &&
-        ctx.TryWriteUInt32(address + 0x3C, unchecked((uint)state.Protocol));
+        TryWriteUInt32(ctx, address + 0x20, unchecked((uint)state.Type)) &&
+        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)) &&
-        ctx.TryWriteUInt32(address + 4, unchecked((uint)state.Protocol));
+        TryWriteUInt32(ctx, address, unchecked((uint)state.Type)) &&
+        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 +1322,32 @@ 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;
         }
@@ -737,7 +737,7 @@ public static class KernelPthreadExtendedCompatExports
             state = GetOrCreateAttrStateLocked(attrAddress);
         }
 
-        if (!ctx.TryWriteInt32(schedParamAddress, state.SchedPriority))
+        if (!TryWriteInt32(ctx, schedParamAddress, state.SchedPriority))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -760,7 +760,7 @@ 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 +839,6 @@ 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 +1016,6 @@ 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 +1040,12 @@ 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 +1377,24 @@ 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

@@ -4,11 +4,14 @@
 using SharpEmu.HLE;
 using SharpEmu.Libs.Fiber;
 using System.Buffers.Binary;
+using System.Collections.Generic;
 using System.Diagnostics;
+using System.IO;
 using System.Runtime.InteropServices;
 using System.Runtime.Intrinsics.X86;
 using System.Security.Cryptography;
 using System.Text;
+using System.Threading;
 
 namespace SharpEmu.Libs.Kernel;
 
@@ -256,8 +259,8 @@ public static class KernelRuntimeCompatExports
         }
 
         if (timezoneAddress != 0 &&
-            (!ctx.TryWriteInt32(timezoneAddress, 0) ||
-             !ctx.TryWriteInt32(timezoneAddress + sizeof(int), 0)))
+            (!TryWriteInt32(ctx, timezoneAddress, 0) ||
+             !TryWriteInt32(ctx, timezoneAddress + sizeof(int), 0)))
         {
             return -1;
         }
@@ -614,7 +617,7 @@ 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);
     }
 
     [SysAbiExport(
@@ -824,7 +827,7 @@ 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;
         }
@@ -854,7 +857,7 @@ 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;
         }
@@ -1055,7 +1058,7 @@ 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;
         }
@@ -1073,7 +1076,7 @@ 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;
         }
@@ -1230,8 +1233,8 @@ public static class KernelRuntimeCompatExports
             : 0;
         var minutesWest = unchecked((int)-offset.TotalMinutes);
 
-        if (!ctx.TryWriteInt32(timezoneAddress, minutesWest) ||
-            !ctx.TryWriteInt32(timezoneAddress + sizeof(int), dstSeconds / 60))
+        if (!TryWriteInt32(ctx, timezoneAddress, minutesWest) ||
+            !TryWriteInt32(ctx, timezoneAddress + sizeof(int), dstSeconds / 60))
         {
             return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -1241,7 +1244,7 @@ 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;
         }
@@ -1301,7 +1304,7 @@ 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;
         }
@@ -1391,7 +1394,7 @@ 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;
         }
@@ -1428,7 +1431,7 @@ 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;
             }
@@ -1501,6 +1504,13 @@ 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

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;
@@ -44,12 +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));
@@ -66,14 +68,14 @@ public static class KernelSemaphoreCompatExports
             Count = initialCount,
         };
 
-        if (!ctx.TryWriteUInt32(semaphoreAddress, handle))
+        if (!TryWriteUInt32(ctx, semaphoreAddress, handle))
         {
             _semaphores.TryRemove(handle, out _);
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, 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(
@@ -89,12 +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)
@@ -103,30 +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);
             }
 
             if (!GuestThreadExecution.RequestCurrentThreadBlock(ctx, "sceKernelWaitSema"))
             {
                 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);
         }
     }
 
@@ -142,12 +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)
@@ -155,12 +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);
         }
     }
 
@@ -176,24 +178,24 @@ 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 ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
         }
     }
 
@@ -210,25 +212,25 @@ 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 (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.WaitingThreads = 0;
             TraceSemaphore($"cancel handle=0x{handle:X8} name='{semaphore.Name}' set={setCount} count={semaphore.Count}");
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
         }
     }
 
@@ -242,11 +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);
         }
 
         TraceSemaphore($"delete handle=0x{handle:X8} name='{semaphore.Name}'");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
+    }
+
+    private static int SetReturn(CpuContext ctx, OrbisGen2Result result)
+    {
+        var value = (int)result;
+        ctx[CpuRegister.Rax] = unchecked((ulong)value);
+        return value;
+    }
+
+    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 TryReadNullTerminatedUtf8(CpuContext ctx, ulong address, int maxLength, out string value)
+    {
+        value = string.Empty;
+        if (address == 0 || maxLength <= 0)
+        {
+            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))
+            {
+                return false;
+            }
+
+            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/Network/Http2Exports.cs

@@ -1,7 +1,9 @@
 // Copyright (C) 2026 SharpEmu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+using System;
 using System.Collections.Concurrent;
+using System.Threading;
 using SharpEmu.HLE;
 
 namespace SharpEmu.Libs.Network;
@@ -30,7 +32,7 @@ public static class Http2Exports
 
         if (poolSize == 0 || maxRequests <= 0)
         {
-            return ctx.SetReturn(Http2ErrorInvalidArgument);
+            return SetReturn(ctx, Http2ErrorInvalidArgument);
         }
 
         var id = Interlocked.Increment(ref _nextContextId);
@@ -51,11 +53,17 @@ public static class Http2Exports
         var id = unchecked((int)ctx[CpuRegister.Rdi]);
         if (!_contexts.TryRemove(id, out _))
         {
-            return ctx.SetReturn(Http2ErrorInvalidId);
+            return SetReturn(ctx, Http2ErrorInvalidId);
         }
 
         TraceHttp2("term", id, 0, 0, 0, 0);
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
     }
 
     private static void TraceHttp2(string operation, int id, ulong arg0, ulong arg1, ulong arg2, ulong arg3)

src/SharpEmu.Libs/Network/HttpExports.cs

@@ -3,6 +3,7 @@
 
 using SharpEmu.HLE;
 using System.Collections.Concurrent;
+using System.Threading;
 
 namespace SharpEmu.Libs.Network;
 
@@ -32,7 +33,7 @@ public static class HttpExports
         var poolSize = ctx[CpuRegister.Rdx];
         if (poolSize == 0)
         {
-            return ctx.SetReturn(HttpErrorInvalidValue);
+            return SetReturn(ctx, HttpErrorInvalidValue);
         }
 
         var id = Interlocked.Increment(ref _nextContextId);
@@ -52,7 +53,7 @@ public static class HttpExports
         var contextId = unchecked((int)ctx[CpuRegister.Rdi]);
         if (!Contexts.ContainsKey(contextId))
         {
-            return ctx.SetReturn(HttpErrorInvalidId);
+            return SetReturn(ctx, HttpErrorInvalidId);
         }
 
         var userAgentAddress = ctx[CpuRegister.Rsi];
@@ -74,8 +75,8 @@ public static class HttpExports
     {
         var templateId = unchecked((int)ctx[CpuRegister.Rdi]);
         return Templates.TryRemove(templateId, out _)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn(HttpErrorInvalidId);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, HttpErrorInvalidId);
     }
 
     [SysAbiExport(
@@ -88,7 +89,7 @@ public static class HttpExports
         var contextId = unchecked((int)ctx[CpuRegister.Rdi]);
         if (!Contexts.TryRemove(contextId, out _))
         {
-            return ctx.SetReturn(HttpErrorInvalidId);
+            return SetReturn(ctx, HttpErrorInvalidId);
         }
 
         foreach (var pair in Templates)
@@ -99,7 +100,13 @@ public static class HttpExports
             }
         }
 
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
     }
 
     private static void TraceHttp(string operation, int id, ulong arg0, ulong arg1, ulong arg2, ulong arg3)

src/SharpEmu.Libs/Network/NetCtlExports.cs

@@ -57,27 +57,27 @@ public static class NetCtlExports
         var natInfoAddress = ctx[CpuRegister.Rdi];
         if (natInfoAddress == 0)
         {
-            return ctx.SetReturn(NetCtlErrorInvalidAddress, typeof(long));
+            return SetReturn(ctx, NetCtlErrorInvalidAddress);
         }
 
         Span<byte> natInfo = stackalloc byte[NatInfoSize];
         if (!ctx.Memory.TryRead(natInfoAddress, natInfo))
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         var size = BinaryPrimitives.ReadUInt32LittleEndian(natInfo[..sizeof(uint)]);
         if (size != NatInfoSize)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT, typeof(long));
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         BinaryPrimitives.WriteInt32LittleEndian(natInfo[4..], 1);
         BinaryPrimitives.WriteInt32LittleEndian(natInfo[8..], 3);
         BinaryPrimitives.WriteUInt32LittleEndian(natInfo[12..], 0x7F000001);
         return ctx.Memory.TryWrite(natInfoAddress, natInfo)
-            ? ctx.SetReturn(0, typeof(long))
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -87,7 +87,7 @@ public static class NetCtlExports
         LibraryName = "libSceNetCtl")]
     public static int NetCtlCheckCallback(CpuContext ctx)
     {
-        return ctx.SetReturn(0, typeof(long));
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -100,14 +100,14 @@ public static class NetCtlExports
         var stateAddress = ctx[CpuRegister.Rdi];
         if (stateAddress == 0)
         {
-            return ctx.SetReturn(NetCtlErrorInvalidAddress, typeof(long));
+            return SetReturn(ctx, NetCtlErrorInvalidAddress);
         }
 
         Span<byte> stateBytes = stackalloc byte[sizeof(int)];
         BinaryPrimitives.WriteInt32LittleEndian(stateBytes, 0);
         return ctx.Memory.TryWrite(stateAddress, stateBytes)
-            ? ctx.SetReturn(0, typeof(long))
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -122,7 +122,7 @@ public static class NetCtlExports
         var callbackIdAddress = ctx[CpuRegister.Rdx];
         if (function == 0 || callbackIdAddress == 0)
         {
-            return ctx.SetReturn(NetCtlErrorInvalidAddress, typeof(long));
+            return SetReturn(ctx, NetCtlErrorInvalidAddress);
         }
 
         lock (CallbackGate)
@@ -130,20 +130,20 @@ public static class NetCtlExports
             var callbackId = Array.FindIndex(Callbacks, static callback => callback.Function == 0);
             if (callbackId < 0)
             {
-                return ctx.SetReturn(NetCtlErrorNoSpace, typeof(long));
+                return SetReturn(ctx, NetCtlErrorNoSpace);
             }
 
             Span<byte> callbackIdBytes = stackalloc byte[sizeof(uint)];
             BinaryPrimitives.WriteUInt32LittleEndian(callbackIdBytes, unchecked((uint)callbackId));
             if (!ctx.Memory.TryWrite(callbackIdAddress, callbackIdBytes))
             {
-                return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+                return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
 
             Callbacks[callbackId] = new CallbackRegistration(function, argument);
         }
 
-        return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_OK, typeof(long));
+        return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -157,7 +157,7 @@ public static class NetCtlExports
         var infoAddress = ctx[CpuRegister.Rsi];
         if (infoAddress == 0)
         {
-            return ctx.SetReturn(NetCtlErrorInvalidAddress, typeof(long));
+            return SetReturn(ctx, NetCtlErrorInvalidAddress);
         }
 
         return code switch
@@ -177,7 +177,7 @@ public static class NetCtlExports
             NetCtlInfoHttpProxyConfig => WriteUInt32(ctx, infoAddress, 0),
             NetCtlInfoHttpProxyServer => WriteAsciiZ(ctx, infoAddress, string.Empty, 256),
             NetCtlInfoHttpProxyPort => WriteUInt16(ctx, infoAddress, 0),
-            _ => ctx.SetReturn(NetCtlErrorNotConnected, typeof(long)),
+            _ => SetReturn(ctx, NetCtlErrorNotConnected),
         };
     }
 
@@ -185,8 +185,8 @@ public static class NetCtlExports
     {
         Span<byte> bytes = stackalloc byte[count];
         return ctx.Memory.TryWrite(address, bytes)
-            ? ctx.SetReturn(0, typeof(long))
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     private static int WriteUInt32(CpuContext ctx, ulong address, uint value)
@@ -194,8 +194,8 @@ public static class NetCtlExports
         Span<byte> bytes = stackalloc byte[sizeof(uint)];
         BinaryPrimitives.WriteUInt32LittleEndian(bytes, value);
         return ctx.Memory.TryWrite(address, bytes)
-            ? ctx.SetReturn(0, typeof(long))
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     private static int WriteUInt16(CpuContext ctx, ulong address, ushort value)
@@ -203,8 +203,8 @@ public static class NetCtlExports
         Span<byte> bytes = stackalloc byte[sizeof(ushort)];
         BinaryPrimitives.WriteUInt16LittleEndian(bytes, value);
         return ctx.Memory.TryWrite(address, bytes)
-            ? ctx.SetReturn(0, typeof(long))
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     private static int WriteAsciiZ(CpuContext ctx, ulong address, string value, int byteCount)
@@ -217,7 +217,13 @@ public static class NetCtlExports
         }
 
         return ctx.Memory.TryWrite(address, bytes)
-            ? ctx.SetReturn(0, typeof(long))
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)(long)result);
+        return result;
     }
 }

src/SharpEmu.Libs/Network/NetExports.cs

@@ -1,9 +1,11 @@
 // Copyright (C) 2026 SharpEmu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+using System;
 using System.Buffers.Binary;
 using System.Collections.Concurrent;
 using System.Text;
+using System.Threading;
 using SharpEmu.HLE;
 
 namespace SharpEmu.Libs.Network;
@@ -33,7 +35,7 @@ public static class NetExports
     {
         _initialized = true;
         TraceNet("init", 0, 0, 0, 0);
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -47,7 +49,7 @@ public static class NetExports
         _pools.Clear();
         _resolvers.Clear();
         TraceNet("term", 0, 0, 0, 0);
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -63,7 +65,7 @@ public static class NetExports
 
         if (size <= 0)
         {
-            return ctx.SetReturn(NetErrorInvalidArgument);
+            return SetReturn(ctx, NetErrorInvalidArgument);
         }
 
         var name = TryReadUtf8Z(ctx, nameAddress, MaxNameLength, out var value)
@@ -88,11 +90,11 @@ public static class NetExports
         var id = unchecked((int)ctx[CpuRegister.Rdi]);
         if (!_pools.TryRemove(id, out _))
         {
-            return ctx.SetReturn(NetErrorBadFileDescriptor);
+            return SetReturn(ctx, NetErrorBadFileDescriptor);
         }
 
         TraceNet("pool.destroy", id, 0, 0, _initialized ? 1UL : 0UL);
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -107,7 +109,7 @@ public static class NetExports
         var flags = unchecked((int)ctx[CpuRegister.Rdx]);
         if (flags != 0)
         {
-            return ctx.SetReturn(NetErrorInvalidArgument);
+            return SetReturn(ctx, NetErrorInvalidArgument);
         }
 
         var name = TryReadUtf8Z(ctx, nameAddress, MaxNameLength, out var value)
@@ -129,8 +131,8 @@ public static class NetExports
     {
         var id = unchecked((int)ctx[CpuRegister.Rdi]);
         return _resolvers.TryRemove(id, out _)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn(NetErrorBadFileDescriptor);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, NetErrorBadFileDescriptor);
     }
 
     [SysAbiExport(
@@ -144,19 +146,25 @@ public static class NetExports
         var statusAddress = ctx[CpuRegister.Rsi];
         if (statusAddress == 0)
         {
-            return ctx.SetReturn(NetErrorInvalidArgument);
+            return SetReturn(ctx, NetErrorInvalidArgument);
         }
 
         if (!_resolvers.TryGetValue(id, out var resolver))
         {
-            return ctx.SetReturn(NetErrorBadFileDescriptor);
+            return SetReturn(ctx, NetErrorBadFileDescriptor);
         }
 
         Span<byte> status = stackalloc byte[sizeof(int)];
         BinaryPrimitives.WriteInt32LittleEndian(status, resolver.LastError);
         return ctx.Memory.TryWrite(statusAddress, status)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
     }
 
     private static bool TryReadUtf8Z(CpuContext ctx, ulong address, int maxLength, out string value)

src/SharpEmu.Libs/Network/SslExports.cs

@@ -1,7 +1,9 @@
 // Copyright (C) 2026 SharpEmu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+using System;
 using System.Collections.Concurrent;
+using System.Threading;
 using SharpEmu.HLE;
 
 namespace SharpEmu.Libs.Network;
@@ -26,7 +28,7 @@ public static class SslExports
         var poolSize = ctx[CpuRegister.Rdi];
         if (poolSize == 0)
         {
-            return ctx.SetReturn(SslErrorOutOfSize);
+            return SetReturn(ctx, SslErrorOutOfSize);
         }
 
         var id = Interlocked.Increment(ref _nextContextId);
@@ -47,11 +49,11 @@ public static class SslExports
         var id = unchecked((int)ctx[CpuRegister.Rdi]);
         if (!_contexts.TryRemove(id, out _))
         {
-            return ctx.SetReturn(SslErrorInvalidId);
+            return SetReturn(ctx, SslErrorInvalidId);
         }
 
         TraceSsl("term", id, 0);
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -63,7 +65,13 @@ public static class SslExports
     {
         var id = unchecked((int)ctx[CpuRegister.Rdi]);
         TraceSsl("close", id, 0);
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
     }
 
     private static void TraceSsl(string operation, int id, ulong arg0)

src/SharpEmu.Libs/Ngs2/Ngs2Exports.cs

@@ -4,6 +4,7 @@
 using SharpEmu.HLE;
 using SharpEmu.Libs.Kernel;
 using System.Buffers.Binary;
+using System.Threading;
 
 namespace SharpEmu.Libs.Ngs2;
 
@@ -38,13 +39,13 @@ public static class Ngs2Exports
         var outHandleAddress = ctx[CpuRegister.Rdx];
         if (outHandleAddress == 0)
         {
-            return ctx.SetReturn(OrbisNgs2ErrorInvalidOutAddress);
+            return SetReturn(ctx, OrbisNgs2ErrorInvalidOutAddress);
         }
 
         if (!TryCreateHandle(ctx, type: 1, ownerHandle: 0, out var handle) ||
             !ctx.TryWriteUInt64(outHandleAddress, handle))
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         lock (StateGate)
@@ -52,7 +53,7 @@ public static class Ngs2Exports
             Systems[handle] = new SystemState(unchecked((uint)Interlocked.Increment(ref _nextUid)));
         }
 
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -67,7 +68,7 @@ public static class Ngs2Exports
         {
             if (!Systems.Remove(handle))
             {
-                return ctx.SetReturn(OrbisNgs2ErrorInvalidSystemHandle);
+                return SetReturn(ctx, OrbisNgs2ErrorInvalidSystemHandle);
             }
 
             var rackHandles = Racks
@@ -80,7 +81,7 @@ public static class Ngs2Exports
             }
         }
 
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -97,19 +98,19 @@ public static class Ngs2Exports
         {
             if (!Systems.ContainsKey(systemHandle))
             {
-                return ctx.SetReturn(OrbisNgs2ErrorInvalidSystemHandle);
+                return SetReturn(ctx, OrbisNgs2ErrorInvalidSystemHandle);
             }
         }
 
         if (outHandleAddress == 0)
         {
-            return ctx.SetReturn(OrbisNgs2ErrorInvalidOutAddress);
+            return SetReturn(ctx, OrbisNgs2ErrorInvalidOutAddress);
         }
 
         if (!TryCreateHandle(ctx, type: 2, systemHandle, out var handle) ||
             !ctx.TryWriteUInt64(outHandleAddress, handle))
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         lock (StateGate)
@@ -117,7 +118,7 @@ public static class Ngs2Exports
             Racks[handle] = new RackState(systemHandle, rackId);
         }
 
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -132,13 +133,13 @@ public static class Ngs2Exports
         {
             if (!Racks.ContainsKey(handle))
             {
-                return ctx.SetReturn(OrbisNgs2ErrorInvalidRackHandle);
+                return SetReturn(ctx, OrbisNgs2ErrorInvalidRackHandle);
             }
 
             RemoveRackLocked(handle);
         }
 
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -155,7 +156,7 @@ public static class Ngs2Exports
         {
             if (!Racks.ContainsKey(rackHandle))
             {
-                return ctx.SetReturn(OrbisNgs2ErrorInvalidRackHandle);
+                return SetReturn(ctx, OrbisNgs2ErrorInvalidRackHandle);
             }
 
             var existing = Voices.FirstOrDefault(
@@ -163,20 +164,20 @@ public static class Ngs2Exports
             if (existing.Key != 0)
             {
                 return ctx.TryWriteUInt64(outHandleAddress, existing.Key)
-                    ? ctx.SetReturn(0)
-                    : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                    ? SetReturn(ctx, 0)
+                    : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
         }
 
         if (outHandleAddress == 0)
         {
-            return ctx.SetReturn(OrbisNgs2ErrorInvalidOutAddress);
+            return SetReturn(ctx, OrbisNgs2ErrorInvalidOutAddress);
         }
 
         if (!TryCreateHandle(ctx, type: 4, rackHandle, out var handle) ||
             !ctx.TryWriteUInt64(outHandleAddress, handle))
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         lock (StateGate)
@@ -184,7 +185,7 @@ public static class Ngs2Exports
             Voices[handle] = new VoiceState(rackHandle, voiceIndex);
         }
 
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -196,10 +197,9 @@ public static class Ngs2Exports
     {
         lock (StateGate)
         {
-            return ctx.SetReturn(
-                Voices.ContainsKey(ctx[CpuRegister.Rdi]) 
-                    ? 0 
-                    : OrbisNgs2ErrorInvalidVoiceHandle);
+            return SetReturn(
+                ctx,
+                Voices.ContainsKey(ctx[CpuRegister.Rdi]) ? 0 : OrbisNgs2ErrorInvalidVoiceHandle);
         }
     }
 
@@ -224,13 +224,13 @@ public static class Ngs2Exports
         {
             if (!Systems.ContainsKey(systemHandle))
             {
-                return ctx.SetReturn(OrbisNgs2ErrorInvalidSystemHandle);
+                return SetReturn(ctx, OrbisNgs2ErrorInvalidSystemHandle);
             }
         }
 
         if (bufferInfoCount != 0 && bufferInfoAddress == 0)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         for (uint i = 0; i < bufferInfoCount; i++)
@@ -239,14 +239,14 @@ public static class Ngs2Exports
             if (!ctx.TryReadUInt64(entryAddress, out var bufferAddress) ||
                 !ctx.TryReadUInt64(entryAddress + 8, out var bufferSize))
             {
-                return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
 
             if (bufferAddress != 0 && bufferSize != 0)
             {
                 if (bufferSize > MaximumRenderBufferSize || !TryClearGuestBuffer(ctx, bufferAddress, bufferSize))
                 {
-                    return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                    return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
                 }
             }
         }
@@ -258,7 +258,7 @@ public static class Ngs2Exports
                 $"[LOADER][TRACE] ngs2.render#{count} system=0x{systemHandle:X16} buffers={bufferInfoCount}");
         }
 
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     private static bool TryCreateHandle(CpuContext ctx, uint type, ulong ownerHandle, out ulong handle)
@@ -313,4 +313,10 @@ public static class Ngs2Exports
             Environment.GetEnvironmentVariable("SHARPEMU_LOG_NGS2"),
             "1",
             StringComparison.Ordinal);
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
+    }
 }

src/SharpEmu.Libs/Np/NpEntitlementAccessExports.cs

@@ -26,12 +26,12 @@ public static class NpEntitlementAccessExports
             clear.Clear();
             if (!ctx.Memory.TryWrite(bootParam, clear))
             {
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
         }
 
         TraceNpEntitlementAccess($"initialize init=0x{initParam:X16} boot=0x{bootParam:X16}");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -48,14 +48,20 @@ public static class NpEntitlementAccessExports
             emptyList.Clear();
             if (!ctx.Memory.TryWrite(listAddress, emptyList))
             {
-                return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
         }
 
         TraceNpEntitlementAccess(
             $"get_addcont_info_list service=0x{ctx[CpuRegister.Rdi]:X16} list=0x{listAddress:X16} " +
             $"max={ctx[CpuRegister.Rdx]} flags=0x{ctx[CpuRegister.Rcx]:X16} -> empty");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
+    }
+
+    private static int SetReturn(CpuContext ctx, OrbisGen2Result result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)(int)result);
+        return (int)result;
     }
 
     private static void TraceNpEntitlementAccess(string message)

src/SharpEmu.Libs/Np/NpManagerExports.cs

@@ -76,14 +76,14 @@ public static class NpManagerExports
         var stateAddress = ctx[CpuRegister.Rsi];
         if (stateAddress == 0)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         Span<byte> stateBytes = stackalloc byte[sizeof(uint)];
         BinaryPrimitives.WriteUInt32LittleEndian(stateBytes, 1);
         return ctx.Memory.TryWrite(stateAddress, stateBytes)
-            ? ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK)
-            : ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK)
+            : SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -97,7 +97,7 @@ public static class NpManagerExports
         var titleSecretAddress = ctx[CpuRegister.Rsi];
         if (titleIdAddress == 0 || titleSecretAddress == 0)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         Span<byte> titleId = stackalloc byte[NpTitleIdSize];
@@ -105,11 +105,17 @@ public static class NpManagerExports
         if (!ctx.Memory.TryRead(titleIdAddress, titleId) ||
             !ctx.Memory.TryRead(titleSecretAddress, titleSecret))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         TraceNp($"set_np_title_id title='{ReadTitleId(titleId)}'");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
+    }
+
+    private static int SetReturn(CpuContext ctx, OrbisGen2Result result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)(int)result);
+        return (int)result;
     }
 
     private static string ReadTitleId(ReadOnlySpan<byte> bytes)

src/SharpEmu.Libs/Np/NpUniversalDataSystemExports.cs

@@ -3,6 +3,7 @@
 
 using SharpEmu.HLE;
 using System.Buffers.Binary;
+using System.Threading;
 
 namespace SharpEmu.Libs.Np;
 
@@ -21,13 +22,13 @@ public static class NpUniversalDataSystemExports
         var parameterAddress = ctx[CpuRegister.Rdi];
         if (parameterAddress == 0)
         {
-            return ctx.SetReturn(NpUniversalDataSystemErrorInvalidArgument, typeof(long));
+            return SetReturn(ctx, NpUniversalDataSystemErrorInvalidArgument);
         }
 
         Span<byte> parameters = stackalloc byte[16];
         return ctx.Memory.TryRead(parameterAddress, parameters)
-            ? ctx.SetReturn(0, typeof(long))
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -40,14 +41,14 @@ public static class NpUniversalDataSystemExports
         var contextAddress = ctx[CpuRegister.Rdi];
         if (contextAddress == 0)
         {
-            return ctx.SetReturn(0, typeof(long));
+            return SetReturn(ctx, 0);
         }
 
         Span<byte> context = stackalloc byte[sizeof(int)];
         BinaryPrimitives.WriteInt32LittleEndian(context, 1);
         return ctx.Memory.TryWrite(contextAddress, context)
-            ? ctx.SetReturn(0, typeof(long))
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -58,13 +59,13 @@ public static class NpUniversalDataSystemExports
     public static int NpUniversalDataSystemCreateHandle(CpuContext ctx)
     {
         var handle = Interlocked.Increment(ref _nextHandle);
-        if (ctx.TryWriteInt32(ctx[CpuRegister.Rdi], handle, checkNil: true) ||
-            ctx.TryWriteInt32(ctx[CpuRegister.Rsi], handle, checkNil: true))
+        if (TryWriteInt32(ctx, ctx[CpuRegister.Rdi], handle) ||
+            TryWriteInt32(ctx, ctx[CpuRegister.Rsi], handle))
         {
-            return ctx.SetReturn(0, typeof(long));
+            return SetReturn(ctx, 0);
         }
 
-        return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT, typeof(long));
+        return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -74,6 +75,24 @@ public static class NpUniversalDataSystemExports
         LibraryName = "libSceNpUniversalDataSystem")]
     public static int NpUniversalDataSystemRegisterContext(CpuContext ctx)
     {
-        return ctx.SetReturn(0, typeof(long));
+        return SetReturn(ctx, 0);
+    }
+
+    private static bool TryWriteInt32(CpuContext ctx, ulong address, int value)
+    {
+        if (address == 0)
+        {
+            return false;
+        }
+
+        Span<byte> bytes = stackalloc byte[sizeof(int)];
+        BinaryPrimitives.WriteInt32LittleEndian(bytes, value);
+        return ctx.Memory.TryWrite(address, bytes);
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)(long)result);
+        return result;
     }
 }

src/SharpEmu.Libs/Np/NpWebApi2Exports.cs

@@ -1,6 +1,8 @@
 // Copyright (C) 2026 SharpEmu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+using System;
+using System.Threading;
 using SharpEmu.HLE;
 
 namespace SharpEmu.Libs.Np;
@@ -23,12 +25,12 @@ public static class NpWebApi2Exports
 
         if (httpContextId <= 0 || poolSize == 0)
         {
-            return ctx.SetReturn(NpWebApi2ErrorInvalidArgument);
+            return SetReturn(ctx, NpWebApi2ErrorInvalidArgument);
         }
 
         Interlocked.Exchange(ref _initialized, 1);
         TraceNpWebApi2("init", httpContextId, poolSize);
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -41,7 +43,13 @@ public static class NpWebApi2Exports
         var libraryContextId = unchecked((int)ctx[CpuRegister.Rdi]);
         Interlocked.Exchange(ref _initialized, 0);
         TraceNpWebApi2("term", libraryContextId, 0);
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
     }
 
     private static void TraceNpWebApi2(string operation, int id, ulong arg0)

src/SharpEmu.Libs/Pad/PadExports.cs

@@ -30,7 +30,7 @@ public static class PadExports
     public static int PadInit(CpuContext ctx)
     {
         _initialized = true;
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     [SysAbiExport(
@@ -46,21 +46,21 @@ public static class PadExports
         var parameterAddress = ctx[CpuRegister.Rcx];
         if (!_initialized)
         {
-            return ctx.SetReturn(OrbisPadErrorNotInitialized);
+            return SetReturn(ctx, OrbisPadErrorNotInitialized);
         }
 
         if (userId == -1)
         {
-            return ctx.SetReturn(OrbisPadErrorDeviceNoHandle);
+            return SetReturn(ctx, OrbisPadErrorDeviceNoHandle);
         }
 
         if (userId != PrimaryUserId || type != StandardPortType || index != 0 || parameterAddress != 0)
         {
-            return ctx.SetReturn(OrbisPadErrorDeviceNotConnected);
+            return SetReturn(ctx, OrbisPadErrorDeviceNotConnected);
         }
 
         Console.Error.WriteLine("[LOADER][INFO] Keyboard controls: Arrow keys = D-pad, WASD = left stick, IJKL = right stick, Z/Enter = Cross, X/Esc = Circle, C = Square, V = Triangle, Q = L1, E = R1, R = L2, F = R2, Tab/Backspace = Options");
-        return ctx.SetReturn(PrimaryPadHandle);
+        return SetReturn(ctx, PrimaryPadHandle);
     }
 
     [SysAbiExport(
@@ -72,8 +72,8 @@ public static class PadExports
     {
         var handle = unchecked((int)ctx[CpuRegister.Rdi]);
         return handle == PrimaryPadHandle
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn(OrbisPadErrorInvalidHandle);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, OrbisPadErrorInvalidHandle);
     }
 
     [SysAbiExport(
@@ -87,12 +87,12 @@ public static class PadExports
         var informationAddress = ctx[CpuRegister.Rsi];
         if (handle != PrimaryPadHandle)
         {
-            return ctx.SetReturn(OrbisPadErrorInvalidHandle);
+            return SetReturn(ctx, OrbisPadErrorInvalidHandle);
         }
 
         if (informationAddress == 0)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         Span<byte> information = stackalloc byte[ControllerInformationSize];
@@ -107,8 +107,8 @@ public static class PadExports
         BinaryPrimitives.WriteInt32LittleEndian(information[0x10..], 0);
 
         return ctx.Memory.TryWrite(informationAddress, information)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -122,17 +122,17 @@ public static class PadExports
         var dataAddress = ctx[CpuRegister.Rsi];
         if (handle != PrimaryPadHandle)
         {
-            return ctx.SetReturn(OrbisPadErrorInvalidHandle);
+            return SetReturn(ctx, OrbisPadErrorInvalidHandle);
         }
 
         if (dataAddress == 0)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         return WriteNeutralPadData(ctx, dataAddress)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -147,17 +147,17 @@ public static class PadExports
         var count = unchecked((int)ctx[CpuRegister.Rdx]);
         if (handle != PrimaryPadHandle)
         {
-            return ctx.SetReturn(OrbisPadErrorInvalidHandle);
+            return SetReturn(ctx, OrbisPadErrorInvalidHandle);
         }
 
         if (dataAddress == 0 || count < 1 || count > 64)
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         return WriteNeutralPadData(ctx, dataAddress)
-            ? ctx.SetReturn(1)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 1)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -167,7 +167,7 @@ public static class PadExports
     LibraryName = "libScePad")]
     public static int PadSetVibrationMode(CpuContext ctx)
     {
-        return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     private static bool WriteNeutralPadData(CpuContext ctx, ulong dataAddress)
@@ -201,6 +201,12 @@ public static class PadExports
         return ctx.Memory.TryWrite(dataAddress, data);
     }
 
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
+    }
+
     [DllImport("user32.dll")]
     private static extern short GetAsyncKeyState(int vKey);
 

src/SharpEmu.Libs/PlayGo/PlayGoExports.cs

@@ -234,7 +234,7 @@ public static class PlayGoExports
         if (outChunkIdList == 0)
         {
             TracePlayGo($"get_chunk_id count_only entries={availableEntries} out_entries=0x{outEntries:X16}");
-            return ctx.TryWriteUInt32(outEntries, availableEntries)
+            return TryWriteUInt32(ctx, outEntries, availableEntries)
                 ? (int)OrbisGen2Result.ORBIS_GEN2_OK
                 : (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
         }
@@ -249,14 +249,14 @@ public static class PlayGoExports
         for (uint i = 0; i < entriesToWrite; i++)
         {
             var chunkId = chunkIds.Length == 0 ? (ushort)0 : chunkIds[i];
-            if (!ctx.TryWriteUInt16(outChunkIdList + (i * sizeof(ushort)), chunkId))
+            if (!TryWriteUInt16(ctx, outChunkIdList + (i * sizeof(ushort)), chunkId))
             {
                 return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
             }
         }
 
         TracePlayGo($"get_chunk_id write requested={numberOfEntries} wrote={entriesToWrite} available={availableEntries}");
-        return ctx.TryWriteUInt32(outEntries, entriesToWrite)
+        return TryWriteUInt32(ctx, outEntries, entriesToWrite)
             ? (int)OrbisGen2Result.ORBIS_GEN2_OK
             : (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
     }
@@ -292,7 +292,7 @@ public static class PlayGoExports
 
         return ValidateChunkIds(ctx, chunkIds, numberOfEntries) is { } chunkError && chunkError != 0
             ? chunkError
-            : ctx.TryWriteInt64(outEta, 0)
+            : TryWriteInt64(ctx, outEta, 0)
                 ? (int)OrbisGen2Result.ORBIS_GEN2_OK
                 : (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
     }
@@ -324,7 +324,7 @@ public static class PlayGoExports
             speed = _installSpeed;
         }
 
-        return ctx.TryWriteInt32(outSpeed, speed)
+        return TryWriteInt32(ctx, outSpeed, speed)
             ? (int)OrbisGen2Result.ORBIS_GEN2_OK
             : (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
     }
@@ -399,7 +399,7 @@ public static class PlayGoExports
         var loci = new byte[numberOfEntries];
         for (uint i = 0; i < numberOfEntries; i++)
         {
-            if (!ctx.TryReadUInt16(chunkIds + (i * sizeof(ushort)), out var chunkId))
+            if (!TryReadUInt16(ctx, chunkIds + (i * sizeof(ushort)), out var chunkId))
             {
                 return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
             }
@@ -503,7 +503,7 @@ public static class PlayGoExports
         }
 
         TracePlayGo($"get_todo requested={numberOfEntries} wrote=0");
-        return ctx.TryWriteUInt32(outEntries, 0)
+        return TryWriteUInt32(ctx, outEntries, 0)
             ? (int)OrbisGen2Result.ORBIS_GEN2_OK
             : (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
     }
@@ -648,7 +648,7 @@ public static class PlayGoExports
     {
         for (uint i = 0; i < numberOfEntries; i++)
         {
-            if (!ctx.TryReadUInt16(chunkIds + (i * sizeof(ushort)), out var chunkId))
+            if (!TryReadUInt16(ctx, chunkIds + (i * sizeof(ushort)), out var chunkId))
             {
                 return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
             }
@@ -728,6 +728,47 @@ public static class PlayGoExports
         }
     }
 
+    private static bool TryReadUInt16(CpuContext ctx, ulong address, out ushort value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(ushort)];
+        if (!ctx.Memory.TryRead(address, buffer))
+        {
+            value = 0;
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt16LittleEndian(buffer);
+        return true;
+    }
+
+    private static bool TryWriteUInt16(CpuContext ctx, ulong address, ushort value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(ushort)];
+        BinaryPrimitives.WriteUInt16LittleEndian(buffer, value);
+        return ctx.Memory.TryWrite(address, buffer);
+    }
+
+    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 TryWriteInt32(CpuContext ctx, ulong address, int value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(int)];
+        BinaryPrimitives.WriteInt32LittleEndian(buffer, value);
+        return ctx.Memory.TryWrite(address, buffer);
+    }
+
+    private static bool TryWriteInt64(CpuContext ctx, ulong address, long value)
+    {
+        Span<byte> buffer = stackalloc byte[sizeof(long)];
+        BinaryPrimitives.WriteInt64LittleEndian(buffer, value);
+        return ctx.Memory.TryWrite(address, buffer);
+    }
+
     private static void TracePlayGo(string message)
     {
         if (string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_PLAYGO"), "1", StringComparison.Ordinal))

src/SharpEmu.Libs/SaveData/SaveDataDialogExports.cs

@@ -3,6 +3,7 @@
 
 using SharpEmu.HLE;
 using System.Buffers.Binary;
+using System.Threading;
 
 namespace SharpEmu.Libs.SaveData;
 
@@ -34,10 +35,10 @@ public static class SaveDataDialogExports
     {
         if (Interlocked.CompareExchange(ref _status, StatusInitialized, StatusNone) != StatusNone)
         {
-            return ctx.SetReturn(ErrorAlreadyInitialized);
+            return SetReturn(ctx, ErrorAlreadyInitialized);
         }
 
-        return ctx.SetReturn(ErrorOk);
+        return SetReturn(ctx, ErrorOk);
     }
 
     [SysAbiExport(
@@ -50,22 +51,22 @@ public static class SaveDataDialogExports
         var paramAddress = ctx[CpuRegister.Rdi];
         if (paramAddress == 0)
         {
-            return ctx.SetReturn(ErrorArgNull);
+            return SetReturn(ctx, ErrorArgNull);
         }
 
         if (_status is not (StatusInitialized or StatusFinished))
         {
-            return ctx.SetReturn(ErrorNotInitialized);
+            return SetReturn(ctx, ErrorNotInitialized);
         }
 
         _lastMode = TryReadInt32(ctx, paramAddress, out var mode) ? mode : 0;
-        _lastUserData = ctx.TryReadUInt64(paramAddress + 0xC8, out var userData) ? userData : 0;
+        _lastUserData = TryReadUInt64(ctx, paramAddress + 0xC8, out var userData) ? userData : 0;
 
         // There is no host save dialog yet. Complete immediately with OK so
         // guest polling sees a finished dialog instead of spinning forever.
         Interlocked.Exchange(ref _status, StatusFinished);
         TraceSaveDataDialog($"open mode={_lastMode} userData=0x{_lastUserData:X16} -> finished");
-        return ctx.SetReturn(ErrorOk);
+        return SetReturn(ctx, ErrorOk);
     }
 
     [SysAbiExport(
@@ -73,21 +74,21 @@ public static class SaveDataDialogExports
         ExportName = "sceSaveDataDialogGetStatus",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libSceSaveDataDialog")]
-    public static int SaveDataDialogGetStatus(CpuContext ctx) => ctx.SetReturn(Volatile.Read(ref _status));
+    public static int SaveDataDialogGetStatus(CpuContext ctx) => SetReturn(ctx, Volatile.Read(ref _status));
 
     [SysAbiExport(
         Nid = "KK3Bdg1RWK0",
         ExportName = "sceSaveDataDialogUpdateStatus",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libSceSaveDataDialog")]
-    public static int SaveDataDialogUpdateStatus(CpuContext ctx) => ctx.SetReturn(Volatile.Read(ref _status));
+    public static int SaveDataDialogUpdateStatus(CpuContext ctx) => SetReturn(ctx, Volatile.Read(ref _status));
 
     [SysAbiExport(
         Nid = "en7gNVnh878",
         ExportName = "sceSaveDataDialogIsReadyToDisplay",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libSceSaveDataDialog")]
-    public static int SaveDataDialogIsReadyToDisplay(CpuContext ctx) => ctx.SetReturn(1);
+    public static int SaveDataDialogIsReadyToDisplay(CpuContext ctx) => SetReturn(ctx, 1);
 
     [SysAbiExport(
         Nid = "yEiJ-qqr6Cg",
@@ -99,12 +100,12 @@ public static class SaveDataDialogExports
         var resultAddress = ctx[CpuRegister.Rdi];
         if (resultAddress == 0)
         {
-            return ctx.SetReturn(ErrorArgNull);
+            return SetReturn(ctx, ErrorArgNull);
         }
 
         if (Volatile.Read(ref _status) != StatusFinished)
         {
-            return ctx.SetReturn(ErrorNotFinished);
+            return SetReturn(ctx, ErrorNotFinished);
         }
 
         Span<byte> result = stackalloc byte[ResultSize];
@@ -116,10 +117,10 @@ public static class SaveDataDialogExports
 
         if (!ctx.Memory.TryWrite(resultAddress, result))
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
-        return ctx.SetReturn(ErrorOk);
+        return SetReturn(ctx, ErrorOk);
     }
 
     [SysAbiExport(
@@ -131,10 +132,10 @@ public static class SaveDataDialogExports
     {
         if (Interlocked.CompareExchange(ref _status, StatusFinished, StatusRunning) != StatusRunning)
         {
-            return ctx.SetReturn(ErrorNotRunning);
+            return SetReturn(ctx, ErrorNotRunning);
         }
 
-        return ctx.SetReturn(ErrorOk);
+        return SetReturn(ctx, ErrorOk);
     }
 
     [SysAbiExport(
@@ -146,12 +147,12 @@ public static class SaveDataDialogExports
     {
         if (Interlocked.Exchange(ref _status, StatusNone) == StatusNone)
         {
-            return ctx.SetReturn(ErrorNotInitialized);
+            return SetReturn(ctx, ErrorNotInitialized);
         }
 
         _lastMode = 0;
         _lastUserData = 0;
-        return ctx.SetReturn(ErrorOk);
+        return SetReturn(ctx, ErrorOk);
     }
 
     [SysAbiExport(
@@ -159,14 +160,14 @@ public static class SaveDataDialogExports
         ExportName = "sceSaveDataDialogProgressBarInc",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libSceSaveDataDialog")]
-    public static int SaveDataDialogProgressBarInc(CpuContext ctx) => ctx.SetReturn(ErrorOk);
+    public static int SaveDataDialogProgressBarInc(CpuContext ctx) => SetReturn(ctx, ErrorOk);
 
     [SysAbiExport(
         Nid = "hay1CfTmLyA",
         ExportName = "sceSaveDataDialogProgressBarSetValue",
         Target = Generation.Gen4 | Generation.Gen5,
         LibraryName = "libSceSaveDataDialog")]
-    public static int SaveDataDialogProgressBarSetValue(CpuContext ctx) => ctx.SetReturn(ErrorOk);
+    public static int SaveDataDialogProgressBarSetValue(CpuContext ctx) => SetReturn(ctx, ErrorOk);
 
     private static bool TryReadInt32(CpuContext ctx, ulong address, out int value)
     {
@@ -181,6 +182,25 @@ public static class SaveDataDialogExports
         return true;
     }
 
+    private static bool TryReadUInt64(CpuContext ctx, ulong address, out ulong value)
+    {
+        value = 0;
+        Span<byte> bytes = stackalloc byte[sizeof(ulong)];
+        if (!ctx.Memory.TryRead(address, bytes))
+        {
+            return false;
+        }
+
+        value = BinaryPrimitives.ReadUInt64LittleEndian(bytes);
+        return true;
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
+    }
+
     private static void TraceSaveDataDialog(string message)
     {
         if (!string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_SAVEDATA"), "1", StringComparison.Ordinal))

src/SharpEmu.Libs/SaveData/SaveDataExports.cs

@@ -50,15 +50,15 @@ public static class SaveDataExports
         try
         {
             Directory.CreateDirectory(ResolveSaveDataRoot());
-            return ctx.SetReturn(0);
+            return SetReturn(ctx, 0);
         }
         catch (IOException)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorInternal);
+            return SetReturn(ctx, OrbisSaveDataErrorInternal);
         }
         catch (UnauthorizedAccessException)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorInternal);
+            return SetReturn(ctx, OrbisSaveDataErrorInternal);
         }
     }
 
@@ -73,18 +73,18 @@ public static class SaveDataExports
         var resultAddress = ctx[CpuRegister.Rsi];
         if (condAddress == 0 || resultAddress == 0)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorParameter);
+            return SetReturn(ctx, OrbisSaveDataErrorParameter);
         }
 
         if (!TryReadSearchCond(ctx, condAddress, out var cond) ||
             !TryReadSearchResult(ctx, resultAddress, out var result))
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         if (cond.UserId < 0 || cond.SortKey > SortKeyFreeBlocks || cond.SortOrder > SortOrderDescent)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorParameter);
+            return SetReturn(ctx, OrbisSaveDataErrorParameter);
         }
 
         try
@@ -96,7 +96,7 @@ public static class SaveDataExports
             }
             else if (!TryReadFixedAscii(ctx, cond.TitleIdAddress, SaveDataTitleIdSize, out titleId))
             {
-                return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
 
             var root = ResolveTitleSaveRoot(cond.UserId, titleId);
@@ -108,21 +108,21 @@ public static class SaveDataExports
             var setNum = result.DirNamesNum == 0
                 ? 0
                 : Math.Min(result.DirNamesNum, entries.Count);
-            if (!ctx.TryWriteUInt32(resultAddress + ResultHitNumOffset, checked((uint)entries.Count)) ||
-                !ctx.TryWriteUInt32(resultAddress + ResultSetNumOffset, checked((uint)setNum)))
+            if (!TryWriteUInt32(ctx, resultAddress + ResultHitNumOffset, checked((uint)entries.Count)) ||
+                !TryWriteUInt32(ctx, resultAddress + ResultSetNumOffset, checked((uint)setNum)))
             {
-                return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
 
             if (setNum == 0)
             {
                 TraceSaveData($"dir_name_search user={cond.UserId} title={titleId} hits={entries.Count} set=0 root='{root}'");
-                return ctx.SetReturn(0);
+                return SetReturn(ctx, 0);
             }
 
             if (result.DirNamesAddress == 0)
             {
-                return ctx.SetReturn(OrbisSaveDataErrorParameter);
+                return SetReturn(ctx, OrbisSaveDataErrorParameter);
             }
 
             for (var i = 0; i < setNum; i++)
@@ -138,20 +138,20 @@ public static class SaveDataExports
                     (result.InfosAddress != 0 &&
                      !TryWriteSearchInfo(ctx, result.InfosAddress + ((ulong)i * SaveDataSearchInfoSize), entry)))
                 {
-                    return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                    return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
                 }
             }
 
             TraceSaveData($"dir_name_search user={cond.UserId} title={titleId} hits={entries.Count} set={setNum} root='{root}'");
-            return ctx.SetReturn(0);
+            return SetReturn(ctx, 0);
         }
         catch (IOException)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorInternal);
+            return SetReturn(ctx, OrbisSaveDataErrorInternal);
         }
         catch (UnauthorizedAccessException)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorInternal);
+            return SetReturn(ctx, OrbisSaveDataErrorInternal);
         }
     }
 
@@ -166,25 +166,25 @@ public static class SaveDataExports
         var resultAddress = ctx[CpuRegister.Rsi];
         if (mountAddress == 0 || resultAddress == 0)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorParameter);
+            return SetReturn(ctx, OrbisSaveDataErrorParameter);
         }
 
-        if (!ctx.TryReadInt32(mountAddress, out var userId) ||
+        if (!TryReadInt32(ctx, mountAddress, out var userId) ||
             !ctx.TryReadUInt64(mountAddress + 0x08, out var dirNameAddress) ||
             !ctx.TryReadUInt64(mountAddress + 0x10, out var blocks) ||
             !ctx.TryReadUInt64(mountAddress + 0x18, out var systemBlocks) ||
-            !ctx.TryReadUInt32(mountAddress + 0x20, out var mountMode) ||
-            !ctx.TryReadUInt32(mountAddress + 0x24, out var resource) ||
-            !ctx.TryReadUInt32(mountAddress + 0x28, out var mode) ||
+            !TryReadUInt32(ctx, mountAddress + 0x20, out var mountMode) ||
+            !TryReadUInt32(ctx, mountAddress + 0x24, out var resource) ||
+            !TryReadUInt32(ctx, mountAddress + 0x28, out var mode) ||
             dirNameAddress == 0 ||
             !TryReadFixedAscii(ctx, dirNameAddress, SaveDataDirNameSize, out var dirName))
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         if (userId < 0 || string.IsNullOrWhiteSpace(dirName))
         {
-            return ctx.SetReturn(OrbisSaveDataErrorParameter);
+            return SetReturn(ctx, OrbisSaveDataErrorParameter);
         }
 
         try
@@ -199,12 +199,12 @@ public static class SaveDataExports
 
             if (!existed && !create && !createIfMissing)
             {
-                return ctx.SetReturn(OrbisSaveDataErrorNotFound);
+                return SetReturn(ctx, OrbisSaveDataErrorNotFound);
             }
 
             if (existed && create)
             {
-                return ctx.SetReturn(OrbisSaveDataErrorExists);
+                return SetReturn(ctx, OrbisSaveDataErrorExists);
             }
 
             if (!existed)
@@ -221,26 +221,26 @@ public static class SaveDataExports
             BinaryPrimitives.WriteUInt32LittleEndian(result[0x1C..], createIfMissing && !existed ? 1u : 0u);
             if (!ctx.Memory.TryWrite(resultAddress, result))
             {
-                return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+                return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
             }
 
             TraceSaveData(
                 $"mount3 user={userId} title={titleId} dir={dirName} blocks={blocks} " +
                 $"system_blocks={systemBlocks} mount_mode=0x{mountMode:X} resource={resource} mode={mode} " +
                 $"mount_point={mountPoint} created={!existed} root='{savePath}'");
-            return ctx.SetReturn(0);
+            return SetReturn(ctx, 0);
         }
         catch (IOException)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorInternal);
+            return SetReturn(ctx, OrbisSaveDataErrorInternal);
         }
         catch (UnauthorizedAccessException)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorInternal);
+            return SetReturn(ctx, OrbisSaveDataErrorInternal);
         }
         catch (ArgumentException)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorParameter);
+            return SetReturn(ctx, OrbisSaveDataErrorParameter);
         }
     }
 
@@ -258,30 +258,30 @@ public static class SaveDataExports
 
         if (resourceAddress == 0)
         {
-            return ctx.SetReturn(OrbisSaveDataErrorParameter);
+            return SetReturn(ctx, OrbisSaveDataErrorParameter);
         }
 
         var id = (uint)Interlocked.Increment(ref _nextTransactionResource);
 
-        if (!ctx.TryWriteUInt32(resourceAddress, id))
+        if (!TryWriteUInt32(ctx, resourceAddress, id))
         {
-            return ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         TraceSaveData(
             $"create_transaction_resource user={userId} reserved=0x{reserved:X} resource_addr=0x{resourceAddress:X} id={id}");
 
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
     }
 
     private static bool TryReadSearchCond(CpuContext ctx, ulong address, out SearchCond cond)
     {
         cond = default;
-        if (!ctx.TryReadInt32(address, out var userId) ||
+        if (!TryReadInt32(ctx, address, out var userId) ||
             !ctx.TryReadUInt64(address + 0x08, out var titleIdAddress) ||
             !ctx.TryReadUInt64(address + 0x10, out var dirNameAddress) ||
-            !ctx.TryReadUInt32(address + 0x18, out var sortKey) ||
-            !ctx.TryReadUInt32(address + 0x1C, out var sortOrder))
+            !TryReadUInt32(ctx, address + 0x18, out var sortKey) ||
+            !TryReadUInt32(ctx, address + 0x1C, out var sortOrder))
         {
             return false;
         }
@@ -304,7 +304,7 @@ public static class SaveDataExports
     {
         result = default;
         if (!ctx.TryReadUInt64(address + ResultDirNamesOffset, out var dirNamesAddress) ||
-            !ctx.TryReadUInt32(address + ResultDirNamesNumOffset, out var dirNamesNum) ||
+            !TryReadUInt32(ctx, address + ResultDirNamesNumOffset, out var dirNamesNum) ||
             !ctx.TryReadUInt64(address + ResultParamsOffset, out var paramsAddress) ||
             !ctx.TryReadUInt64(address + ResultInfosOffset, out var infosAddress))
         {
@@ -505,6 +505,45 @@ public static class SaveDataExports
         }
     }
 
+    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 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 static bool TryWriteUInt32(CpuContext ctx, ulong address, uint value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(uint)];
+        BinaryPrimitives.WriteUInt32LittleEndian(bytes, value);
+        return ctx.Memory.TryWrite(address, bytes);
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
+    }
+
     private static void TraceSaveData(string message)
     {
         if (string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_SAVEDATA"), "1", StringComparison.Ordinal))

src/SharpEmu.Libs/Share/ShareExports.cs

@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 using System.Text;
+using System.Threading;
 using SharpEmu.HLE;
 
 namespace SharpEmu.Libs.Share;
@@ -25,13 +26,13 @@ public static class ShareExports
         var affinityMask = ctx[CpuRegister.Rdx];
         if (memorySize == 0)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         Interlocked.Exchange(ref _initialized, 1);
 
         TraceShare($"initialize memory=0x{memorySize:X} priority={priority} affinity=0x{affinityMask:X}");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
     }
 
     [SysAbiExport(
@@ -44,12 +45,12 @@ public static class ShareExports
         var contentParamAddress = ctx[CpuRegister.Rdi];
         if (contentParamAddress == 0)
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
         }
 
         if (!TryReadNullTerminatedUtf8(ctx, contentParamAddress, MaxContentParamBytes, out var contentParam))
         {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
         }
 
         _contentParam = contentParam;
@@ -59,7 +60,13 @@ public static class ShareExports
         }
 
         TraceShare($"set_content_param len={contentParam.Length} preview='{FormatTraceString(contentParam)}'");
-        return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
+        return SetReturn(ctx, OrbisGen2Result.ORBIS_GEN2_OK);
+    }
+
+    private static int SetReturn(CpuContext ctx, OrbisGen2Result result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)(int)result);
+        return (int)result;
     }
 
     private static bool TryReadNullTerminatedUtf8(CpuContext ctx, ulong address, int maxLength, out string value)

src/SharpEmu.Libs/SharpEmu.Libs.csproj

@@ -15,10 +15,6 @@ SPDX-License-Identifier: GPL-2.0-or-later
     <PackageReference Include="Silk.NET.Windowing" />
   </ItemGroup>
 
-  <PropertyGroup>
-    <NoWarn>$(NoWarn);1591</NoWarn>
-  </PropertyGroup>
-
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>

src/SharpEmu.Libs/SystemService/SystemServiceExports.cs

@@ -24,7 +24,7 @@ public static class SystemServiceExports
         var valueAddress = ctx[CpuRegister.Rsi];
         if (valueAddress == 0)
         {
-            return ctx.SetReturn(OrbisSystemServiceErrorParameter);
+            return SetReturn(ctx, OrbisSystemServiceErrorParameter);
         }
 
         var value = parameterId switch
@@ -37,8 +37,8 @@ public static class SystemServiceExports
         Span<byte> valueBytes = stackalloc byte[sizeof(int)];
         BinaryPrimitives.WriteInt32LittleEndian(valueBytes, value);
         return ctx.Memory.TryWrite(valueAddress, valueBytes)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -51,7 +51,7 @@ public static class SystemServiceExports
         var statusAddress = ctx[CpuRegister.Rdi];
         if (statusAddress == 0)
         {
-            return ctx.SetReturn(OrbisSystemServiceErrorParameter);
+            return SetReturn(ctx, OrbisSystemServiceErrorParameter);
         }
 
         Span<byte> status = stackalloc byte[SystemServiceStatusSize];
@@ -60,8 +60,8 @@ public static class SystemServiceExports
         status[0x06] = 1;
 
         return ctx.Memory.TryWrite(statusAddress, status)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -74,7 +74,7 @@ public static class SystemServiceExports
         var infoAddress = ctx[CpuRegister.Rdi];
         if (infoAddress == 0)
         {
-            return ctx.SetReturn(OrbisSystemServiceErrorParameter);
+            return SetReturn(ctx, OrbisSystemServiceErrorParameter);
         }
 
         Span<byte> info = stackalloc byte[DisplaySafeAreaInfoSize];
@@ -82,8 +82,8 @@ public static class SystemServiceExports
         BinaryPrimitives.WriteSingleLittleEndian(info, 1.0f);
 
         return ctx.Memory.TryWrite(infoAddress, info)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -94,6 +94,12 @@ public static class SystemServiceExports
     public static int SystemServiceHideSplashScreen(CpuContext ctx)
     {
         VulkanVideoPresenter.HideSplashScreen();
-        return ctx.SetReturn(0);
+        return SetReturn(ctx, 0);
+    }
+
+    private static int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
     }
 }

src/SharpEmu.Libs/UserService/UserServiceExports.cs

@@ -4,6 +4,7 @@
 using SharpEmu.HLE;
 using System.Buffers.Binary;
 using System.Text;
+using System.Threading;
 
 namespace SharpEmu.Libs.UserService;
 
@@ -39,12 +40,12 @@ public static class UserServiceExports
         var userIdAddress = ctx[CpuRegister.Rdi];
         if (userIdAddress == 0)
         {
-            return ctx.SetReturn(OrbisUserServiceErrorInvalidArgument);
+            return SetReturn(ctx, OrbisUserServiceErrorInvalidArgument);
         }
 
-        return ctx.TryWriteInt32(userIdAddress, PrimaryUserId)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+        return TryWriteInt32(ctx, userIdAddress, PrimaryUserId)
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -57,7 +58,7 @@ public static class UserServiceExports
         var userIdListAddress = ctx[CpuRegister.Rdi];
         if (userIdListAddress == 0)
         {
-            return ctx.SetReturn(OrbisUserServiceErrorInvalidArgument);
+            return SetReturn(ctx, OrbisUserServiceErrorInvalidArgument);
         }
 
         Span<byte> userIds = stackalloc byte[sizeof(int) * 4];
@@ -66,8 +67,8 @@ public static class UserServiceExports
         BinaryPrimitives.WriteInt32LittleEndian(userIds[0x08..], InvalidUserId);
         BinaryPrimitives.WriteInt32LittleEndian(userIds[0x0C..], InvalidUserId);
         return ctx.Memory.TryWrite(userIdListAddress, userIds)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -80,20 +81,20 @@ public static class UserServiceExports
         var eventAddress = ctx[CpuRegister.Rdi];
         if (eventAddress == 0)
         {
-            return ctx.SetReturn(OrbisUserServiceErrorInvalidArgument);
+            return SetReturn(ctx, OrbisUserServiceErrorInvalidArgument);
         }
 
         if (Interlocked.Exchange(ref _loginEventDelivered, 1) != 0)
         {
-            return ctx.SetReturn(OrbisUserServiceErrorNoEvent);
+            return SetReturn(ctx, OrbisUserServiceErrorNoEvent);
         }
 
         Span<byte> payload = stackalloc byte[sizeof(int) * 2];
         BinaryPrimitives.WriteInt32LittleEndian(payload[0..], 0);
         BinaryPrimitives.WriteInt32LittleEndian(payload[sizeof(int)..], PrimaryUserId);
         return ctx.Memory.TryWrite(eventAddress, payload)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -108,25 +109,25 @@ public static class UserServiceExports
         var capacity = ctx[CpuRegister.Rdx];
         if (userId != PrimaryUserId)
         {
-            return ctx.SetReturn(OrbisUserServiceErrorInvalidParameter);
+            return SetReturn(ctx, OrbisUserServiceErrorInvalidParameter);
         }
 
         if (nameAddress == 0)
         {
-            return ctx.SetReturn(OrbisUserServiceErrorInvalidArgument);
+            return SetReturn(ctx, OrbisUserServiceErrorInvalidArgument);
         }
 
         var nameBytes = Encoding.UTF8.GetBytes(PrimaryUserName);
         if (capacity <= (ulong)nameBytes.Length)
         {
-            return ctx.SetReturn(OrbisUserServiceErrorBufferTooShort);
+            return SetReturn(ctx, OrbisUserServiceErrorBufferTooShort);
         }
 
         Span<byte> output = stackalloc byte[nameBytes.Length + 1];
         nameBytes.CopyTo(output);
         return ctx.Memory.TryWrite(nameAddress, output)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
     [SysAbiExport(
@@ -140,16 +141,29 @@ public static class UserServiceExports
         var valueAddress = ctx[CpuRegister.Rsi];
         if (parameterId != 1000)
         {
-            return ctx.SetReturn(OrbisUserServiceErrorInvalidParameter);
+            return SetReturn(ctx, OrbisUserServiceErrorInvalidParameter);
         }
 
         if (valueAddress == 0)
         {
-            return ctx.SetReturn(OrbisUserServiceErrorInvalidArgument);
+            return SetReturn(ctx, OrbisUserServiceErrorInvalidArgument);
         }
 
-        return ctx.TryWriteInt32(valueAddress, 0)
-            ? ctx.SetReturn(0)
-            : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+        return TryWriteInt32(ctx, valueAddress, 0)
+            ? SetReturn(ctx, 0)
+            : SetReturn(ctx, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
+    }
+
+    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 int SetReturn(CpuContext ctx, int result)
+    {
+        ctx[CpuRegister.Rax] = unchecked((ulong)result);
+        return result;
     }
 }

src/SharpEmu.Libs/VideoOut/VideoOutExports.cs

@@ -922,9 +922,9 @@ public static class VideoOutExports
     private static bool TryReadBufferAttribute(CpuContext ctx, ulong attributeAddress, bool attribute2, out BufferAttribute attribute)
     {
         attribute = default;
-        if (!ctx.TryReadUInt32(attributeAddress + 0x04, out var tilingMode) ||
-            !ctx.TryReadUInt32(attributeAddress + 0x0C, out var width) ||
-            !ctx.TryReadUInt32(attributeAddress + 0x10, out var height))
+        if (!TryReadUInt32(ctx, attributeAddress + 0x04, out var tilingMode) ||
+            !TryReadUInt32(ctx, attributeAddress + 0x0C, out var width) ||
+            !TryReadUInt32(ctx, attributeAddress + 0x10, out var height))
         {
             return false;
         }
@@ -941,10 +941,10 @@ public static class VideoOutExports
             return true;
         }
 
-        if (!ctx.TryReadUInt32(attributeAddress + 0x00, out var pixelFormat32) ||
-            !ctx.TryReadUInt32(attributeAddress + 0x08, out var aspectRatio) ||
-            !ctx.TryReadUInt32(attributeAddress + 0x14, out var pitchInPixel) ||
-            !ctx.TryReadUInt32(attributeAddress + 0x18, out var option32))
+        if (!TryReadUInt32(ctx, attributeAddress + 0x00, out var pixelFormat32) ||
+            !TryReadUInt32(ctx, attributeAddress + 0x08, out var aspectRatio) ||
+            !TryReadUInt32(ctx, attributeAddress + 0x14, out var pitchInPixel) ||
+            !TryReadUInt32(ctx, attributeAddress + 0x18, out var option32))
         {
             return false;
         }
@@ -1291,6 +1291,19 @@ public static class VideoOutExports
         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 bool TryReadInt16(CpuContext ctx, ulong address, out short value)
     {
         Span<byte> buffer = stackalloc byte[sizeof(short)];

src/SharpEmu.Logging/SharpEmu.Logging.csproj

@@ -4,7 +4,4 @@ SPDX-License-Identifier: GPL-2.0-or-later
 -->
 
 <Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <NoWarn>$(NoWarn);1591</NoWarn>
-  </PropertyGroup>
 </Project>