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another hle implements, especially for mutex calls

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This commit is contained in:
ParantezTech
2026-03-12 18:01:42 +03:00
parent 73ae502e09
commit 028494a83b
12 changed files with 1133 additions and 252 deletions
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src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.cs
+3
View File
@@ -587,6 +587,9 @@ public sealed unsafe partial class DirectExecutionBackend : INativeCpuBackend, I
{
"_init_env" or
"atexit" or
"__cxa_guard_acquire" or
"__cxa_guard_release" or
"__cxa_guard_abort" or
"strlen" or
"strnlen" or
"strcmp" or
src/SharpEmu.Core/Loader/ImportedSymbolRelocation.cs
+10
View File
@@ -0,0 +1,10 @@
// Copyright (C) 2026 SharpEmu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
namespace SharpEmu.Core.Loader;
public readonly record struct ImportedSymbolRelocation(
ulong TargetAddress,
long Addend,
string Nid,
bool IsData);
src/SharpEmu.Core/Loader/SelfImage.cs
+4
View File
@@ -16,6 +16,7 @@ public sealed class SelfImage
IReadOnlyList<VirtualMemoryRegion> mappedRegions,
IReadOnlyDictionary<ulong, string>? importStubs = null,
IReadOnlyDictionary<string, ulong>? runtimeSymbols = null,
IReadOnlyList<ImportedSymbolRelocation>? importedRelocations = null,
ulong imageBase = 0,
ulong procParamAddress = 0)
{
@@ -28,6 +29,7 @@ public sealed class SelfImage
MappedRegions = mappedRegions;
ImportStubs = importStubs ?? new Dictionary<ulong, string>();
RuntimeSymbols = runtimeSymbols ?? new Dictionary<string, ulong>(StringComparer.Ordinal);
ImportedRelocations = importedRelocations ?? Array.Empty<ImportedSymbolRelocation>();
_imageBase = imageBase;
ProcParamAddress = procParamAddress;
}
@@ -44,6 +46,8 @@ public sealed class SelfImage
public IReadOnlyDictionary<string, ulong> RuntimeSymbols { get; }
public IReadOnlyList<ImportedSymbolRelocation> ImportedRelocations { get; }
public ulong EntryPoint => ElfHeader.EntryPoint + _imageBase;
public ulong ProcParamAddress { get; }
src/SharpEmu.Core/Loader/SelfLoader.cs
+364 -172
View File
@@ -29,6 +29,7 @@ public sealed class SelfLoader : ISelfLoader
private const int ElfRelocationSize = 24;
private const int ElfSectionHeaderSize = 64;
private const uint SectionTypeSymbolTable = 2;
private const uint SectionTypeRela = 4;
private const long DtNull = 0;
private const long DtPltRelSize = 0x02;
@@ -65,6 +66,7 @@ public sealed class SelfLoader : ISelfLoader
private const byte SymbolBindLocal = 0;
private const byte SymbolBindGlobal = 1;
private const byte SymbolBindWeak = 2;
private const byte SymbolTypeObject = 1;
private IModuleManager? _moduleManager;
private uint _nextTlsModuleId = 1;
@@ -190,11 +192,13 @@ public sealed class SelfLoader : ISelfLoader
var importStubs = ResolveAndPatchImportStubs(
imageData,
loadContext,
elfHeader,
programHeaders,
virtualMemory,
imageBase,
_moduleManager,
tlsModuleId);
tlsModuleId,
out var importedRelocations);
var effectiveImportStubs = importStubs.Count == 0
? new Dictionary<ulong, string>()
: new Dictionary<ulong, string>(importStubs);
@@ -246,6 +250,7 @@ public sealed class SelfLoader : ISelfLoader
virtualMemory.SnapshotRegions(),
finalizedImportStubs,
finalizedRuntimeSymbols,
importedRelocations,
imageBase,
procParamAddress);
}
@@ -426,12 +431,15 @@ public sealed class SelfLoader : ISelfLoader
private static IReadOnlyDictionary<ulong, string> ResolveAndPatchImportStubs(
ReadOnlySpan<byte> imageData,
LoadContext loadContext,
ElfHeader elfHeader,
IReadOnlyList<ProgramHeader> programHeaders,
IVirtualMemory virtualMemory,
ulong imageBase,
IModuleManager? moduleManager,
uint tlsModuleId)
uint tlsModuleId,
out IReadOnlyList<ImportedSymbolRelocation> importedRelocations)
{
importedRelocations = Array.Empty<ImportedSymbolRelocation>();
if (!TryGetProgramHeader(programHeaders, ProgramHeaderType.Dynamic, out var dynamicHeader, out var dynamicHeaderIndex))
{
return EmptyImportStubs;
@@ -447,10 +455,18 @@ public sealed class SelfLoader : ISelfLoader
throw new NotSupportedException("Dynamic metadata segments larger than 2 GB are not currently supported.");
}
var dynamicOffset = ResolvePhysicalSegmentOffset(imageData.Length, loadContext, dynamicHeader, dynamicHeaderIndex);
EnsureRange(imageData.Length, dynamicOffset, dynamicHeader.FileSize);
if (!TryLoadDynamicTableBytes(
imageData,
loadContext,
virtualMemory,
imageBase,
dynamicHeader,
dynamicHeaderIndex,
out var dynamicTable))
{
return EmptyImportStubs;
}
var dynamicTable = imageData.Slice((int)dynamicOffset, (int)dynamicHeader.FileSize);
var elfData = imageData;
var dynamicInfo = ParseDynamicInfo(dynamicTable);
@@ -463,13 +479,6 @@ public sealed class SelfLoader : ISelfLoader
Console.WriteLine($"[LOADER] TLS module id: {tlsModuleId}");
Console.WriteLine($"[LOADER] HasImportMetadata: {dynamicInfo.HasImportMetadata}");
if (!dynamicInfo.HasImportMetadata)
{
Console.WriteLine($"[LOADER] No import metadata found in ELF!");
return EmptyImportStubs;
}
Console.WriteLine($"[LOADER] ImageBase runtime: 0x{imageBase:X16}");
var relocations = new List<ElfRelocation>(512);
if (dynamicInfo.RelaSize != 0 &&
@@ -484,13 +493,16 @@ public sealed class SelfLoader : ISelfLoader
CollectRelocations(jmpRelBytes, relocations);
}
if (relocations.Count == 0)
if (!dynamicInfo.HasImportMetadata)
{
Console.WriteLine($"[LOADER] No relocations found!");
return EmptyImportStubs;
Console.WriteLine($"[LOADER] No import metadata found in ELF!");
}
Console.WriteLine($"[LOADER] Processing {relocations.Count} relocations...");
if (relocations.Count != 0)
{
Console.WriteLine($"[LOADER] ImageBase runtime: 0x{imageBase:X16}");
Console.WriteLine($"[LOADER] Processing {relocations.Count} relocations...");
}
uint maxSymbolIndex = 0;
foreach (var relocation in relocations)
@@ -544,164 +556,37 @@ public sealed class SelfLoader : ISelfLoader
var descriptors = new List<RelocationDescriptor>(256);
var orderedImportNids = new List<string>(128);
var seenImportNids = new HashSet<string>(StringComparer.Ordinal);
var skippedUnsupported = 0;
var skippedUnmapped = 0;
var skippedSymbolRead = 0;
var skippedNonImportBind = 0;
var skippedNameRead = 0;
var skippedEmptyNid = 0;
foreach (var relocation in relocations)
AppendRelocationDescriptors(
relocations,
symbolTable,
stringTable,
virtualMemory,
imageBase,
tlsModuleId,
descriptors,
orderedImportNids,
seenImportNids);
if (descriptors.Count == 0)
{
if (IsFocusRelocationOffset(relocation.Offset, imageBase))
var sectionFallbackRelocCount = AppendSectionRelocationDescriptors(
imageData,
loadContext,
elfHeader,
virtualMemory,
imageBase,
tlsModuleId,
descriptors,
orderedImportNids,
seenImportNids);
if (sectionFallbackRelocCount != 0)
{
Console.Error.WriteLine(
$"[LOADER][FOCUS][SCAN] off=0x{relocation.Offset:X16} type={relocation.Type} sym={relocation.SymbolIndex} addend=0x{relocation.Addend:X}");
Console.WriteLine(
$"[LOADER] Section relocation fallback recovered {sectionFallbackRelocCount} relocation entries, {orderedImportNids.Count} unique NIDs, {descriptors.Count} descriptors");
}
if (!IsSupportedRelocationType(relocation.Type))
{
skippedUnsupported++;
if (IsFocusRelocationOffset(relocation.Offset, imageBase))
{
Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] unsupported type={relocation.Type}");
}
continue;
}
if (!TryResolveMappedAddress(virtualMemory, relocation.Offset, imageBase, sizeof(ulong), out var targetAddress))
{
skippedUnmapped++;
if (IsFocusRelocationOffset(relocation.Offset, imageBase))
{
Console.Error.WriteLine("[LOADER][FOCUS][SKIP] target address not mapped");
}
continue;
}
if (relocation.Type == RelocationTypeRelative)
{
descriptors.Add(new RelocationDescriptor(
targetAddress,
relocation.Addend,
null,
imageBase,
RelocationValueKind.Pointer));
continue;
}
if (relocation.Type == RelocationTypeTlsModuleId)
{
var dtpmodValue = tlsModuleId == 0 ? 1u : tlsModuleId;
descriptors.Add(new RelocationDescriptor(
targetAddress,
0,
null,
dtpmodValue,
RelocationValueKind.TlsModuleId));
continue;
}
var symbolIndex = relocation.SymbolIndex;
ElfSymbol symbol;
if (symbolIndex == 0)
{
symbol = default;
}
else if (!TryReadSymbol(symbolTable, symbolIndex, out symbol))
{
skippedSymbolRead++;
if (targetAddress >= FocusRelocGuestStart && targetAddress <= FocusRelocGuestEnd)
{
Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] symbol read failed index={symbolIndex}");
}
continue;
}
var addend = relocation.Type is RelocationTypeGlobalData or RelocationTypeJumpSlot ? 0 : relocation.Addend;
var symbolBind = GetSymbolBind(symbol.Info);
if (symbolBind == SymbolBindLocal)
{
var symbolAddress = ResolveMappedAddressOrFallback(virtualMemory, symbol.Value, imageBase);
if (symbolAddress == 0)
{
Console.Error.WriteLine(
$"[LOADER] Skipping local relocation with invalid symbol value 0x{symbol.Value:X} " +
$"at target 0x{targetAddress:X16}, type={relocation.Type}, sym={symbolIndex}");
continue;
}
descriptors.Add(new RelocationDescriptor(
targetAddress,
addend,
null,
symbolAddress,
RelocationValueKind.Pointer));
continue;
}
if (symbol.Value != 0)
{
var symbolAddress = ResolveMappedAddressOrFallback(virtualMemory, symbol.Value, imageBase);
if (symbolAddress == 0)
{
Console.Error.WriteLine(
$"[LOADER] Skipping relocation with invalid symbol value 0x{symbol.Value:X} " +
$"at target 0x{targetAddress:X16}, type={relocation.Type}, sym={symbolIndex}");
continue;
}
descriptors.Add(new RelocationDescriptor(
targetAddress,
addend,
null,
symbolAddress,
RelocationValueKind.Pointer));
continue;
}
if (symbolBind is not (SymbolBindGlobal or SymbolBindWeak))
{
skippedNonImportBind++;
if (targetAddress >= FocusRelocGuestStart && targetAddress <= FocusRelocGuestEnd)
{
Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] bind={symbolBind} not importable");
}
continue;
}
if (!TryReadNullTerminatedAscii(stringTable, symbol.NameOffset, out var symbolName))
{
skippedNameRead++;
if (targetAddress >= FocusRelocGuestStart && targetAddress <= FocusRelocGuestEnd)
{
Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] symbol name read failed offset={symbol.NameOffset}");
}
continue;
}
var nid = ExtractNid(symbolName);
if (string.IsNullOrWhiteSpace(nid))
{
skippedEmptyNid++;
continue;
}
if (seenImportNids.Add(nid))
{
orderedImportNids.Add(nid);
}
descriptors.Add(new RelocationDescriptor(
targetAddress,
addend,
nid,
0,
RelocationValueKind.Pointer));
}
Console.WriteLine($"[LOADER] Found {orderedImportNids.Count} unique NIDs, {descriptors.Count} descriptors");
Console.WriteLine(
$"[LOADER] Reloc skip stats: unsupported={skippedUnsupported}, unmapped={skippedUnmapped}, symbolRead={skippedSymbolRead}, nonImportBind={skippedNonImportBind}, nameRead={skippedNameRead}, emptyNid={skippedEmptyNid}");
if (descriptors.Count == 0)
{
@@ -709,6 +594,8 @@ public sealed class SelfLoader : ISelfLoader
return EmptyImportStubs;
}
importedRelocations = BuildImportedRelocations(descriptors);
var stubsByAddress = CreateImportStubMapping(virtualMemory, orderedImportNids);
Console.WriteLine($"[LOADER] Created {stubsByAddress.Count} import stubs");
@@ -784,6 +671,237 @@ public sealed class SelfLoader : ISelfLoader
return stubsByAddress;
}
private static int AppendSectionRelocationDescriptors(
ReadOnlySpan<byte> imageData,
LoadContext loadContext,
ElfHeader elfHeader,
IVirtualMemory virtualMemory,
ulong imageBase,
uint tlsModuleId,
ICollection<RelocationDescriptor> descriptors,
IList<string> orderedImportNids,
ISet<string> seenImportNids)
{
if (elfHeader.SectionHeaderOffset == 0 ||
elfHeader.SectionHeaderCount == 0 ||
elfHeader.SectionHeaderEntrySize < ElfSectionHeaderSize)
{
return 0;
}
var appendedRelocations = 0;
for (var sectionIndex = 0; sectionIndex < elfHeader.SectionHeaderCount; sectionIndex++)
{
if (!TryReadSectionHeader(imageData, loadContext, elfHeader, sectionIndex, out var relocationHeader) ||
relocationHeader.Type != SectionTypeRela ||
relocationHeader.Size == 0 ||
relocationHeader.EntrySize < ElfRelocationSize)
{
continue;
}
if (!TryReadElfRelativeSlice(imageData, loadContext, relocationHeader.Offset, relocationHeader.Size, out var relocationTable))
{
continue;
}
var relocations = new List<ElfRelocation>(checked((int)(relocationHeader.Size / relocationHeader.EntrySize)));
CollectRelocations(relocationTable, relocations);
if (relocations.Count == 0)
{
continue;
}
ReadOnlySpan<byte> symbolTable = ReadOnlySpan<byte>.Empty;
ReadOnlySpan<byte> stringTable = ReadOnlySpan<byte>.Empty;
if (relocationHeader.Link < elfHeader.SectionHeaderCount &&
TryReadSectionHeader(imageData, loadContext, elfHeader, (int)relocationHeader.Link, out var symbolHeader) &&
symbolHeader.Size != 0 &&
symbolHeader.EntrySize >= ElfSymbolSize &&
TryReadElfRelativeSlice(imageData, loadContext, symbolHeader.Offset, symbolHeader.Size, out symbolTable) &&
symbolHeader.Link < elfHeader.SectionHeaderCount &&
TryReadSectionHeader(imageData, loadContext, elfHeader, (int)symbolHeader.Link, out var stringHeader) &&
stringHeader.Size != 0 &&
TryReadElfRelativeSlice(imageData, loadContext, stringHeader.Offset, stringHeader.Size, out stringTable))
{
}
AppendRelocationDescriptors(
relocations,
symbolTable,
stringTable,
virtualMemory,
imageBase,
tlsModuleId,
descriptors,
orderedImportNids,
seenImportNids);
appendedRelocations += relocations.Count;
}
return appendedRelocations;
}
private static void AppendRelocationDescriptors(
IReadOnlyList<ElfRelocation> relocations,
ReadOnlySpan<byte> symbolTable,
ReadOnlySpan<byte> stringTable,
IVirtualMemory virtualMemory,
ulong imageBase,
uint tlsModuleId,
ICollection<RelocationDescriptor> descriptors,
IList<string> orderedImportNids,
ISet<string> seenImportNids)
{
foreach (var relocation in relocations)
{
if (IsFocusRelocationOffset(relocation.Offset, imageBase))
{
Console.Error.WriteLine(
$"[LOADER][FOCUS][SCAN] off=0x{relocation.Offset:X16} type={relocation.Type} sym={relocation.SymbolIndex} addend=0x{relocation.Addend:X}");
}
if (!IsSupportedRelocationType(relocation.Type))
{
if (IsFocusRelocationOffset(relocation.Offset, imageBase))
{
Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] unsupported type={relocation.Type}");
}
continue;
}
if (!TryResolveMappedAddress(virtualMemory, relocation.Offset, imageBase, sizeof(ulong), out var targetAddress))
{
if (IsFocusRelocationOffset(relocation.Offset, imageBase))
{
Console.Error.WriteLine("[LOADER][FOCUS][SKIP] target address not mapped");
}
continue;
}
if (relocation.Type == RelocationTypeRelative)
{
descriptors.Add(new RelocationDescriptor(
targetAddress,
relocation.Addend,
null,
imageBase,
RelocationValueKind.Pointer,
IsDataImport: false));
continue;
}
if (relocation.Type == RelocationTypeTlsModuleId)
{
var dtpmodValue = tlsModuleId == 0 ? 1u : tlsModuleId;
descriptors.Add(new RelocationDescriptor(
targetAddress,
0,
null,
dtpmodValue,
RelocationValueKind.TlsModuleId,
IsDataImport: false));
continue;
}
var symbolIndex = relocation.SymbolIndex;
ElfSymbol symbol;
if (symbolIndex == 0)
{
symbol = default;
}
else if (!TryReadSymbol(symbolTable, symbolIndex, out symbol))
{
if (targetAddress >= FocusRelocGuestStart && targetAddress <= FocusRelocGuestEnd)
{
Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] symbol read failed index={symbolIndex}");
}
continue;
}
var addend = relocation.Type is RelocationTypeGlobalData or RelocationTypeJumpSlot ? 0 : relocation.Addend;
var symbolBind = GetSymbolBind(symbol.Info);
if (symbolBind == SymbolBindLocal)
{
var symbolAddress = ResolveMappedAddressOrFallback(virtualMemory, symbol.Value, imageBase);
if (symbolAddress == 0)
{
Console.Error.WriteLine(
$"[LOADER] Skipping local relocation with invalid symbol value 0x{symbol.Value:X} " +
$"at target 0x{targetAddress:X16}, type={relocation.Type}, sym={symbolIndex}");
continue;
}
descriptors.Add(new RelocationDescriptor(
targetAddress,
addend,
null,
symbolAddress,
RelocationValueKind.Pointer,
IsDataImport: false));
continue;
}
if (symbol.Value != 0)
{
var symbolAddress = ResolveMappedAddressOrFallback(virtualMemory, symbol.Value, imageBase);
if (symbolAddress == 0)
{
Console.Error.WriteLine(
$"[LOADER] Skipping relocation with invalid symbol value 0x{symbol.Value:X} " +
$"at target 0x{targetAddress:X16}, type={relocation.Type}, sym={symbolIndex}");
continue;
}
descriptors.Add(new RelocationDescriptor(
targetAddress,
addend,
null,
symbolAddress,
RelocationValueKind.Pointer,
IsDataImport: false));
continue;
}
if (symbolBind is not (SymbolBindGlobal or SymbolBindWeak))
{
if (targetAddress >= FocusRelocGuestStart && targetAddress <= FocusRelocGuestEnd)
{
Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] bind={symbolBind} not importable");
}
continue;
}
if (!TryReadNullTerminatedAscii(stringTable, symbol.NameOffset, out var symbolName))
{
if (targetAddress >= FocusRelocGuestStart && targetAddress <= FocusRelocGuestEnd)
{
Console.Error.WriteLine($"[LOADER][FOCUS][SKIP] symbol name read failed offset={symbol.NameOffset}");
}
continue;
}
var nid = ExtractNid(symbolName);
if (string.IsNullOrWhiteSpace(nid))
{
continue;
}
if (seenImportNids.Add(nid))
{
orderedImportNids.Add(nid);
}
descriptors.Add(new RelocationDescriptor(
targetAddress,
addend,
nid,
0,
RelocationValueKind.Pointer,
IsDataImport: GetSymbolType(symbol.Info) == SymbolTypeObject));
}
}
private static void RegisterRuntimeSymbolsAndHooks(
ReadOnlySpan<byte> imageData,
LoadContext loadContext,
@@ -811,6 +929,34 @@ public sealed class SelfLoader : ISelfLoader
}
}
private static IReadOnlyList<ImportedSymbolRelocation> BuildImportedRelocations(
IReadOnlyList<RelocationDescriptor> descriptors)
{
if (descriptors.Count == 0)
{
return Array.Empty<ImportedSymbolRelocation>();
}
var importedRelocations = new List<ImportedSymbolRelocation>(descriptors.Count);
foreach (var descriptor in descriptors)
{
if (descriptor.ImportNid is null || descriptor.ValueKind != RelocationValueKind.Pointer)
{
continue;
}
importedRelocations.Add(new ImportedSymbolRelocation(
descriptor.TargetAddress,
descriptor.Addend,
descriptor.ImportNid,
descriptor.IsDataImport));
}
return importedRelocations.Count == 0
? Array.Empty<ImportedSymbolRelocation>()
: importedRelocations;
}
private static int RegisterSectionRuntimeSymbols(
ReadOnlySpan<byte> imageData,
LoadContext loadContext,
@@ -909,9 +1055,18 @@ public sealed class SelfLoader : ISelfLoader
return 0;
}
var dynamicOffset = ResolvePhysicalSegmentOffset(imageData.Length, loadContext, dynamicHeader, dynamicHeaderIndex);
EnsureRange(imageData.Length, dynamicOffset, dynamicHeader.FileSize);
var dynamicTable = imageData.Slice((int)dynamicOffset, (int)dynamicHeader.FileSize);
if (!TryLoadDynamicTableBytes(
imageData,
loadContext,
virtualMemory,
imageBase,
dynamicHeader,
dynamicHeaderIndex,
out var dynamicTable))
{
return 0;
}
var dynamicInfo = ParseDynamicInfo(dynamicTable);
if (dynamicInfo.SymTabOffset == 0 || dynamicInfo.StrTabOffset == 0)
{
@@ -1044,6 +1199,37 @@ public sealed class SelfLoader : ISelfLoader
return true;
}
private static bool TryLoadDynamicTableBytes(
ReadOnlySpan<byte> imageData,
LoadContext loadContext,
IVirtualMemory virtualMemory,
ulong imageBase,
ProgramHeader dynamicHeader,
int dynamicHeaderIndex,
out ReadOnlySpan<byte> dynamicTable)
{
if (TryLoadTableBytes(
imageData,
virtualMemory,
imageBase,
dynamicHeader.VirtualAddress,
dynamicHeader.FileSize,
out var loadedDynamicTable))
{
dynamicTable = loadedDynamicTable;
return true;
}
var dynamicOffset = ResolvePhysicalSegmentOffset(imageData.Length, loadContext, dynamicHeader, dynamicHeaderIndex);
if (!TrySlice(imageData, dynamicOffset, dynamicHeader.FileSize, out dynamicTable))
{
dynamicTable = default;
return false;
}
return true;
}
private static bool TryReadElfRelativeSlice(
ReadOnlySpan<byte> imageData,
LoadContext loadContext,
@@ -1512,6 +1698,11 @@ public sealed class SelfLoader : ISelfLoader
return (byte)(info >> 4);
}
private static byte GetSymbolType(byte info)
{
return (byte)(info & 0x0F);
}
private static bool IsFocusRelocationOffset(ulong relocationOffset, ulong imageBase)
{
if (relocationOffset >= FocusRelocGuestStart && relocationOffset <= FocusRelocGuestEnd)
@@ -1947,7 +2138,8 @@ public sealed class SelfLoader : ISelfLoader
long Addend,
string? ImportNid,
ulong SymbolValue,
RelocationValueKind ValueKind);
RelocationValueKind ValueKind,
bool IsDataImport);
private enum SelfSegmentResolveStatus
{
src/SharpEmu.Core/Runtime/SharpEmuRuntime.cs
+87 -5
View File
@@ -138,7 +138,8 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
var generation = image.ElfHeader.AbiVersion == 2 ? Generation.Gen5 : Generation.Gen4;
var activeImportStubs = new Dictionary<ulong, string>(image.ImportStubs);
var activeRuntimeSymbols = new Dictionary<string, ulong>(image.RuntimeSymbols, StringComparer.Ordinal);
LoadAdjacentSceModules(ebootPath, activeImportStubs, activeRuntimeSymbols);
var loadedModuleImages = LoadAdjacentSceModules(ebootPath, activeImportStubs, activeRuntimeSymbols);
RebindImportedDataSymbols(image, loadedModuleImages, activeRuntimeSymbols);
var processImageName = Path.GetFileName(ebootPath);
if (string.IsNullOrWhiteSpace(processImageName))
{
@@ -328,15 +329,16 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
return result;
}
private void LoadAdjacentSceModules(
private List<SelfImage> LoadAdjacentSceModules(
string ebootPath,
IDictionary<ulong, string> importStubs,
IDictionary<string, ulong> runtimeSymbols)
{
var loadedImages = new List<SelfImage>();
var ebootDirectory = Path.GetDirectoryName(ebootPath);
if (string.IsNullOrWhiteSpace(ebootDirectory))
{
return;
return loadedImages;
}
var moduleDirectories = new[]
@@ -350,7 +352,7 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
if (moduleDirectories.Length == 0)
{
return;
return loadedImages;
}
var allModulePaths = moduleDirectories
@@ -380,7 +382,7 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
if (modulePaths.Length == 0)
{
return;
return loadedImages;
}
Console.Error.WriteLine($"[RUNTIME] Module search directories: {string.Join(", ", moduleDirectories)}");
@@ -416,6 +418,7 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
mergedImportCount += MergeImportStubs(importStubs, moduleImage.ImportStubs, modulePath);
mergedSymbolCount += MergeRuntimeSymbols(runtimeSymbols, moduleImage.RuntimeSymbols);
RegisterLoadedModule(modulePath, moduleImage, isMain: false, isSystemModule: false);
loadedImages.Add(moduleImage);
loadedModules++;
Console.Error.WriteLine(
@@ -430,6 +433,67 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
Console.Error.WriteLine(
$"[RUNTIME] Module preload summary: loaded={loadedModules}, failed={failedModules}, merged_imports={mergedImportCount}, merged_symbols={mergedSymbolCount}");
return loadedImages;
}
private void RebindImportedDataSymbols(
SelfImage mainImage,
IReadOnlyList<SelfImage> loadedModuleImages,
IReadOnlyDictionary<string, ulong> runtimeSymbols)
{
var rebound = 0;
var unresolved = 0;
rebound += RebindImportedDataSymbols(mainImage, runtimeSymbols, ref unresolved);
for (var i = 0; i < loadedModuleImages.Count; i++)
{
rebound += RebindImportedDataSymbols(loadedModuleImages[i], runtimeSymbols, ref unresolved);
}
if (rebound != 0 || unresolved != 0)
{
Console.Error.WriteLine(
$"[RUNTIME] Imported data rebind: rebound={rebound}, unresolved={unresolved}");
}
}
private int RebindImportedDataSymbols(
SelfImage image,
IReadOnlyDictionary<string, ulong> runtimeSymbols,
ref int unresolved)
{
if (image.ImportedRelocations.Count == 0)
{
return 0;
}
var rebound = 0;
for (var i = 0; i < image.ImportedRelocations.Count; i++)
{
var relocation = image.ImportedRelocations[i];
if (!relocation.IsData)
{
continue;
}
if (!runtimeSymbols.TryGetValue(relocation.Nid, out var symbolAddress) ||
!IsUsableRuntimeSymbolAddress(symbolAddress))
{
unresolved++;
continue;
}
var reboundValue = AddSigned(symbolAddress, relocation.Addend);
if (!TryWriteUInt64(_virtualMemory, relocation.TargetAddress, reboundValue))
{
unresolved++;
continue;
}
rebound++;
}
return rebound;
}
private static int MergeImportStubs(
@@ -498,6 +562,24 @@ public sealed class SharpEmuRuntime : ISharpEmuRuntime
return address >= 0x10000 && !IsUnresolvedRuntimeSentinel(address);
}
private static bool TryWriteUInt64(IVirtualMemory virtualMemory, ulong address, ulong value)
{
Span<byte> bytes = stackalloc byte[sizeof(ulong)];
BinaryPrimitives.WriteUInt64LittleEndian(bytes, value);
return virtualMemory.TryWrite(address, bytes);
}
private static ulong AddSigned(ulong value, long addend)
{
if (addend >= 0)
{
return unchecked(value + (ulong)addend);
}
var magnitude = unchecked((ulong)(-(addend + 1))) + 1;
return unchecked(value - magnitude);
}
private static bool IsUnresolvedRuntimeSentinel(ulong value)
{
return value == 0xFFFEUL ||
src/SharpEmu.HLE/OrbisGen2Result.cs
+20
View File
@@ -15,6 +15,11 @@ public enum OrbisGen2Result : int
/// </summary>
ORBIS_GEN2_OK = 0,
/// <summary>
/// Indicates that the operation is not permitted for the calling thread.
/// </summary>
ORBIS_GEN2_ERROR_PERMISSION_DENIED = unchecked((int)0x80020001),
/// <summary>
/// Indicates that the requested export was not found.
/// </summary>
@@ -30,11 +35,26 @@ public enum OrbisGen2Result : int
/// </summary>
ORBIS_GEN2_ERROR_ALREADY_EXISTS = unchecked((int)0x80020004),
/// <summary>
/// Indicates that completing the operation would deadlock.
/// </summary>
ORBIS_GEN2_ERROR_DEADLOCK = unchecked((int)0x8002000B),
/// <summary>
/// Indicates that the target resource is busy.
/// </summary>
ORBIS_GEN2_ERROR_BUSY = unchecked((int)0x80020010),
/// <summary>
/// Indicates that behavior is recognized but not implemented yet.
/// </summary>
ORBIS_GEN2_ERROR_NOT_IMPLEMENTED = unchecked((int)0x8002FFFF),
/// <summary>
/// Indicates that the operation timed out.
/// </summary>
ORBIS_GEN2_ERROR_TIMED_OUT = unchecked((int)0x8002003C),
/// <summary>
/// Indicates that memory access failed.
/// </summary>
src/SharpEmu.Libs/CxxAbiExports.cs
+16
View File
@@ -13,6 +13,7 @@ public static class CxaGuardExports
private sealed class GuardState
{
public int OwnerThreadId { get; set; }
public int RecursionDepth { get; set; }
}
private static readonly ConcurrentDictionary<ulong, GuardState> _inProgress = new();
@@ -53,6 +54,7 @@ public static class CxaGuardExports
var newState = new GuardState
{
OwnerThreadId = currentThreadId,
RecursionDepth = 1,
};
if (_inProgress.TryAdd(guardPtr, newState))
{
@@ -101,6 +103,20 @@ public static class CxaGuardExports
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
}
if (state is not null)
{
lock (state)
{
if (state.RecursionDepth > 1)
{
state.RecursionDepth--;
ctx[CpuRegister.Rax] = 0;
LogGuardResult("guard_release", guardPtr, result: 0, initialized: false, inProgress: true, ownerThreadId: state.OwnerThreadId);
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
}
}
if (!TryWriteGuardInitialized(ctx, guardPtr, initialized: true))
{
ctx[CpuRegister.Rax] = 0;
src/SharpEmu.Libs/Kernel/KernelExports.cs
+27 -3
View File
@@ -8,7 +8,6 @@ namespace SharpEmu.Libs.Kernel;
public static class KernelExports
{
private static long _nextThreadId = 1;
private static int _nextFileDescriptor = 2;
private static readonly object _cxaGate = new();
private static readonly List<CxaDestructorEntry> _cxaDestructors = new();
@@ -175,12 +174,24 @@ public static class KernelExports
public static int PthreadCreate(CpuContext ctx)
{
var threadIdAddress = ctx[CpuRegister.Rdi];
var nextThreadId = unchecked((ulong)Interlocked.Increment(ref _nextThreadId));
if (threadIdAddress != 0 && !ctx.TryWriteUInt64(threadIdAddress, nextThreadId))
var attrAddress = ctx[CpuRegister.Rsi];
var entryAddress = ctx[CpuRegister.Rdx];
var argument = ctx[CpuRegister.Rcx];
var nameAddress = ctx[CpuRegister.R8];
var name = nameAddress == 0 ? string.Empty : ReadCString(ctx, nameAddress, 256);
var threadHandle = KernelPthreadState.CreateThreadHandle(name);
if (threadIdAddress != 0 && !ctx.TryWriteUInt64(threadIdAddress, threadHandle))
{
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
}
if (ShouldTracePthread())
{
Console.Error.WriteLine(
$"[LOADER][TRACE] pthread_create: out=0x{threadIdAddress:X16} attr=0x{attrAddress:X16} entry=0x{entryAddress:X16} arg=0x{argument:X16} name_ptr=0x{nameAddress:X16} name='{name}' -> thread=0x{threadHandle:X16}");
}
ctx[CpuRegister.Rax] = 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
@@ -201,12 +212,20 @@ public static class KernelExports
LibraryName = "libKernel")]
public static int PthreadJoin(CpuContext ctx)
{
var threadId = ctx[CpuRegister.Rdi];
var returnValueAddress = ctx[CpuRegister.Rsi];
if (returnValueAddress != 0 && !ctx.TryWriteUInt64(returnValueAddress, 0))
{
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
}
if (ShouldTracePthread())
{
Console.Error.WriteLine(
$"[LOADER][TRACE] pthread_join: thread=0x{threadId:X16} retval_out=0x{returnValueAddress:X16}");
}
ctx[CpuRegister.Rax] = 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
@@ -370,4 +389,9 @@ public static class KernelExports
try { return System.Text.Encoding.UTF8.GetString(buf.Slice(0, len)); }
catch { return System.Text.Encoding.ASCII.GetString(buf.Slice(0, len)); }
}
private static bool ShouldTracePthread()
{
return string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_PTHREADS"), "1", StringComparison.Ordinal);
}
}
src/SharpEmu.Libs/Kernel/KernelMemoryCompatExports.cs
+398 -6
View File
@@ -35,13 +35,18 @@ public static class KernelMemoryCompatExports
private const uint PageExecuteReadWrite = 0x40;
private const uint PageExecuteWriteCopy = 0x80;
private const uint PageGuard = 0x100;
private const int Enomem = 12;
private const int Einval = 22;
private const nuint DefaultLibcHeapAlignment = 16;
private static readonly object _fdGate = new();
private static readonly Dictionary<int, FileStream> _openFiles = new();
private static readonly Dictionary<int, OpenDirectory> _openDirectories = new();
private static readonly object _libcAllocGate = new();
private static readonly object _memoryGate = new();
private static readonly object _tlsGate = new();
private static readonly Dictionary<ulong, DirectAllocation> _directAllocations = new();
private static readonly Dictionary<ulong, LibcHeapAllocation> _libcAllocations = new();
private static readonly Dictionary<ulong, MappedRegion> _mappedRegions = new();
private static readonly Dictionary<ulong, ulong> _tlsModuleBlocks = new();
private static long _nextFileDescriptor = 2;
@@ -78,7 +83,9 @@ public static class KernelMemoryCompatExports
public required string[] Entries { get; init; }
public int NextIndex { get; set; }
}
private readonly record struct DirectAllocation(ulong Start, ulong Length, int MemoryType);
private readonly record struct LibcHeapAllocation(nint BaseAddress, nuint Size, nuint Alignment);
private readonly record struct MappedRegion(ulong Address, ulong Length, int Protection, bool IsFlexible, ulong DirectStart);
[SysAbiExport(
@@ -310,7 +317,7 @@ public static class KernelMemoryCompatExports
var payload = new byte[bytes.Length + 1];
bytes.CopyTo(payload.AsSpan());
if (!ctx.Memory.TryWrite(destination, payload))
if (!TryWriteCompat(ctx, destination, payload))
{
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
}
@@ -339,7 +346,7 @@ public static class KernelMemoryCompatExports
var copied = 0;
while (copied < count)
{
if (!ctx.Memory.TryRead(source + (ulong)copied, one))
if (!TryReadCompat(ctx, source + (ulong)copied, one))
{
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
}
@@ -352,7 +359,7 @@ public static class KernelMemoryCompatExports
}
}
if (!ctx.Memory.TryWrite(destination, payload))
if (!TryWriteCompat(ctx, destination, payload))
{
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
}
@@ -377,7 +384,7 @@ public static class KernelMemoryCompatExports
}
var payload = GC.AllocateUninitializedArray<byte>(count);
if (count > 0 && (!ctx.Memory.TryRead(source, payload) || !ctx.Memory.TryWrite(destination, payload)))
if (count > 0 && (!TryReadCompat(ctx, source, payload) || !TryWriteCompat(ctx, destination, payload)))
{
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
}
@@ -396,6 +403,161 @@ public static class KernelMemoryCompatExports
return Memcpy(ctx);
}
[SysAbiExport(
Nid = "gQX+4GDQjpM",
ExportName = "malloc",
Target = Generation.Gen4 | Generation.Gen5,
LibraryName = "libc")]
public static int Malloc(CpuContext ctx)
{
ctx[CpuRegister.Rax] =
TryAllocateLibcHeap(ctx[CpuRegister.Rdi], DefaultLibcHeapAlignment, zeroFill: false, out var address)
? address
: 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
[SysAbiExport(
Nid = "tIhsqj0qsFE",
ExportName = "free",
Target = Generation.Gen4 | Generation.Gen5,
LibraryName = "libc")]
public static int Free(CpuContext ctx)
{
FreeLibcHeap(ctx[CpuRegister.Rdi]);
ctx[CpuRegister.Rax] = 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
[SysAbiExport(
Nid = "2X5agFjKxMc",
ExportName = "calloc",
Target = Generation.Gen4 | Generation.Gen5,
LibraryName = "libc")]
public static int Calloc(CpuContext ctx)
{
ctx[CpuRegister.Rax] =
TryMultiplyAllocationSize(ctx[CpuRegister.Rdi], ctx[CpuRegister.Rsi], out var totalSize) &&
TryAllocateLibcHeapCore(totalSize, DefaultLibcHeapAlignment, zeroFill: true, out var address)
? address
: 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
[SysAbiExport(
Nid = "Y7aJ1uydPMo",
ExportName = "realloc",
Target = Generation.Gen4 | Generation.Gen5,
LibraryName = "libc")]
public static int Realloc(CpuContext ctx)
{
var existingAddress = ctx[CpuRegister.Rdi];
var requestedSize = ctx[CpuRegister.Rsi];
if (existingAddress == 0)
{
ctx[CpuRegister.Rax] =
TryAllocateLibcHeap(requestedSize, DefaultLibcHeapAlignment, zeroFill: false, out var freshAddress)
? freshAddress
: 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
if (requestedSize == 0)
{
FreeLibcHeap(existingAddress);
ctx[CpuRegister.Rax] = 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
ctx[CpuRegister.Rax] =
TryReallocateLibcHeap(existingAddress, requestedSize, out var resizedAddress)
? resizedAddress
: 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
[SysAbiExport(
Nid = "Ujf3KzMvRmI",
ExportName = "memalign",
Target = Generation.Gen4 | Generation.Gen5,
LibraryName = "libc")]
public static int Memalign(CpuContext ctx)
{
ctx[CpuRegister.Rax] =
TryAllocateAlignedLibcHeap(
alignmentValue: ctx[CpuRegister.Rdi],
requestedSize: ctx[CpuRegister.Rsi],
requireSizeMultiple: false,
out var address)
? address
: 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
[SysAbiExport(
Nid = "2Btkg8k24Zg",
ExportName = "aligned_alloc",
Target = Generation.Gen4 | Generation.Gen5,
LibraryName = "libc")]
public static int AlignedAlloc(CpuContext ctx)
{
ctx[CpuRegister.Rax] =
TryAllocateAlignedLibcHeap(
alignmentValue: ctx[CpuRegister.Rdi],
requestedSize: ctx[CpuRegister.Rsi],
requireSizeMultiple: true,
out var address)
? address
: 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
[SysAbiExport(
Nid = "cVSk9y8URbc",
ExportName = "posix_memalign",
Target = Generation.Gen4 | Generation.Gen5,
LibraryName = "libc")]
public static int PosixMemalign(CpuContext ctx)
{
var outPointerAddress = ctx[CpuRegister.Rdi];
if (outPointerAddress == 0)
{
ctx[CpuRegister.Rax] = Einval;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
if (!TryValidateAlignedAllocation(
ctx[CpuRegister.Rsi],
ctx[CpuRegister.Rdx],
requireSizeMultiple: false,
requirePointerSizedAlignment: true,
out var alignment,
out var requestedSize))
{
_ = TryWriteUInt64Compat(ctx, outPointerAddress, 0);
ctx[CpuRegister.Rax] = Einval;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
if (!TryAllocateLibcHeapCore(requestedSize, alignment, zeroFill: false, out var address))
{
_ = TryWriteUInt64Compat(ctx, outPointerAddress, 0);
ctx[CpuRegister.Rax] = Enomem;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
if (!TryWriteUInt64Compat(ctx, outPointerAddress, address))
{
FreeLibcHeap(address);
ctx[CpuRegister.Rax] = Einval;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
ctx[CpuRegister.Rax] = 0;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
[SysAbiExport(
Nid = "DfivPArhucg",
ExportName = "memcmp",
@@ -415,8 +577,8 @@ public static class KernelMemoryCompatExports
Span<byte> rightByte = stackalloc byte[1];
for (var i = 0; i < count; i++)
{
if (!ctx.Memory.TryRead(left + (ulong)i, leftByte) ||
!ctx.Memory.TryRead(right + (ulong)i, rightByte))
if (!TryReadCompat(ctx, left + (ulong)i, leftByte) ||
!TryReadCompat(ctx, right + (ulong)i, rightByte))
{
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
}
@@ -2318,6 +2480,236 @@ public static class KernelMemoryCompatExports
}
}
private static bool TryAllocateLibcHeap(ulong requestedSize, nuint alignment, bool zeroFill, out ulong address)
{
address = 0;
return TryConvertAllocationSize(requestedSize, out var size) &&
TryAllocateLibcHeapCore(size, alignment, zeroFill, out address);
}
private static unsafe bool TryAllocateLibcHeapCore(nuint requestedSize, nuint alignment, bool zeroFill, out ulong address)
{
address = 0;
alignment = NormalizeLibcAlignment(alignment);
var actualSize = requestedSize == 0 ? 1u : requestedSize;
nuint totalSize;
try
{
checked
{
totalSize = actualSize + alignment - 1 + (nuint)IntPtr.Size;
}
}
catch (OverflowException)
{
return false;
}
nint baseAddress;
try
{
baseAddress = Marshal.AllocHGlobal(checked((nint)totalSize));
}
catch (OutOfMemoryException)
{
return false;
}
catch (OverflowException)
{
return false;
}
if (baseAddress == 0)
{
return false;
}
var alignedAddress = AlignUp(unchecked((ulong)baseAddress) + (ulong)IntPtr.Size, (ulong)alignment);
lock (_libcAllocGate)
{
_libcAllocations[alignedAddress] = new LibcHeapAllocation(baseAddress, actualSize, alignment);
}
try
{
if (zeroFill)
{
NativeMemory.Clear((void*)alignedAddress, actualSize);
}
}
catch
{
FreeLibcHeap(alignedAddress);
return false;
}
address = alignedAddress;
return true;
}
private static unsafe bool TryReallocateLibcHeap(ulong existingAddress, ulong requestedSize, out ulong resizedAddress)
{
resizedAddress = 0;
if (existingAddress == 0)
{
return TryAllocateLibcHeap(requestedSize, DefaultLibcHeapAlignment, zeroFill: false, out resizedAddress);
}
if (requestedSize == 0)
{
FreeLibcHeap(existingAddress);
return true;
}
LibcHeapAllocation allocation;
lock (_libcAllocGate)
{
if (!_libcAllocations.TryGetValue(existingAddress, out allocation))
{
return false;
}
}
if (!TryAllocateLibcHeap(requestedSize, allocation.Alignment, zeroFill: false, out resizedAddress))
{
return false;
}
var bytesToCopy = Math.Min(allocation.Size, (nuint)requestedSize);
Buffer.MemoryCopy(
source: (void*)existingAddress,
destination: (void*)resizedAddress,
destinationSizeInBytes: checked((long)Math.Max(bytesToCopy, 1u)),
sourceBytesToCopy: checked((long)bytesToCopy));
FreeLibcHeap(existingAddress);
return true;
}
private static bool TryAllocateAlignedLibcHeap(ulong alignmentValue, ulong requestedSize, bool requireSizeMultiple, out ulong address)
{
address = 0;
return TryValidateAlignedAllocation(
alignmentValue,
requestedSize,
requireSizeMultiple,
requirePointerSizedAlignment: false,
out var alignment,
out var size) &&
TryAllocateLibcHeapCore(size, alignment, zeroFill: false, out address);
}
private static bool TryValidateAlignedAllocation(
ulong alignmentValue,
ulong requestedSize,
bool requireSizeMultiple,
bool requirePointerSizedAlignment,
out nuint alignment,
out nuint size)
{
alignment = 0;
size = 0;
if (!TryConvertAllocationSize(requestedSize, out size) ||
alignmentValue == 0 ||
alignmentValue > (ulong)nint.MaxValue)
{
return false;
}
alignment = (nuint)alignmentValue;
if (!IsPowerOfTwo(alignment))
{
return false;
}
if (requirePointerSizedAlignment && alignment % (nuint)IntPtr.Size != 0)
{
return false;
}
if (alignment < (nuint)IntPtr.Size)
{
alignment = (nuint)IntPtr.Size;
}
if (requireSizeMultiple && size % alignment != 0)
{
return false;
}
return true;
}
private static void FreeLibcHeap(ulong address)
{
if (address == 0)
{
return;
}
LibcHeapAllocation allocation;
lock (_libcAllocGate)
{
if (!_libcAllocations.Remove(address, out allocation))
{
return;
}
}
Marshal.FreeHGlobal(allocation.BaseAddress);
}
private static bool TryMultiplyAllocationSize(ulong left, ulong right, out nuint size)
{
size = 0;
if (!TryConvertAllocationSize(left, out var leftSize) ||
!TryConvertAllocationSize(right, out var rightSize))
{
return false;
}
try
{
checked
{
size = leftSize * rightSize;
}
}
catch (OverflowException)
{
return false;
}
return true;
}
private static bool TryConvertAllocationSize(ulong requestedSize, out nuint size)
{
size = 0;
if (requestedSize > (ulong)nint.MaxValue)
{
return false;
}
size = (nuint)requestedSize;
return true;
}
private static nuint NormalizeLibcAlignment(nuint alignment)
{
if (alignment < DefaultLibcHeapAlignment)
{
return DefaultLibcHeapAlignment;
}
return alignment;
}
private static bool IsPowerOfTwo(nuint value)
{
return value != 0 && (value & (value - 1)) == 0;
}
private static bool TryWriteHostMemory(ulong address, ReadOnlySpan<byte> source)
{
if (source.IsEmpty || !IsHostRangeAccessible(address, (ulong)source.Length, writeAccess: true))
src/SharpEmu.Libs/Kernel/KernelPthreadCompatExports.cs
+121 -65
View File
@@ -8,8 +8,10 @@ namespace SharpEmu.Libs.Kernel;
public static class KernelPthreadCompatExports
{
private const int MutexTypeNormal = 0;
private const int MutexTypeRecursive = 1;
private const int MutexTypeDefault = 1;
private const int MutexTypeErrorCheck = 1;
private const int MutexTypeRecursive = 2;
private const int MutexTypeNormal = 4;
private const ulong SyntheticMutexHandleBase = 0x00006000_0000_0000;
private const ulong SyntheticMutexAttrHandleBase = 0x00006001_0000_0000;
@@ -18,24 +20,22 @@ public static class KernelPthreadCompatExports
private static readonly Dictionary<ulong, PthreadMutexAttrState> _mutexAttrStates = new();
private static readonly Dictionary<ulong, PthreadCondState> _condStates = new();
private static readonly HashSet<ulong> _condAttrStates = new();
private static long _nextSyntheticThreadId = 1;
private static long _nextSyntheticMutexHandleId = 1;
private static long _nextSyntheticMutexAttrHandleId = 1;
[ThreadStatic]
private static ulong _currentThreadId;
private sealed class PthreadMutexState
{
public SemaphoreSlim Semaphore { get; } = new(1, 1);
public ulong OwnerThreadId { get; set; }
public int RecursionCount { get; set; }
public int Type { get; set; } = MutexTypeNormal;
public int Type { get; set; } = MutexTypeDefault;
public int Protocol { get; set; }
}
private sealed class PthreadCondState
{
public int PendingSignals { get; set; }
public object SyncRoot { get; } = new();
public ulong SignalEpoch { get; set; }
public int Waiters { get; set; }
}
@@ -48,9 +48,9 @@ public static class KernelPthreadCompatExports
LibraryName = "libKernel")]
public static int PthreadSelf(CpuContext ctx)
{
var currentThreadId = GetCurrentThreadId();
ctx[CpuRegister.Rax] = currentThreadId;
TracePthreadSelf(ctx, currentThreadId);
var currentThreadHandle = KernelPthreadState.GetCurrentThreadHandle();
ctx[CpuRegister.Rax] = currentThreadHandle;
TracePthreadSelf(ctx, currentThreadHandle);
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
@@ -86,7 +86,7 @@ public static class KernelPthreadCompatExports
LibraryName = "libKernel")]
public static int PthreadGetthreadid(CpuContext ctx)
{
var currentThreadId = GetCurrentThreadId();
var currentThreadId = KernelPthreadState.GetCurrentThreadUniqueId();
var outAddress = ctx[CpuRegister.Rdi];
if (outAddress != 0 && !ctx.TryWriteUInt64(outAddress, currentThreadId))
{
@@ -216,6 +216,13 @@ public static class KernelPthreadCompatExports
LibraryName = "libKernel")]
public static int PosixPthreadMutexattrSettype(CpuContext ctx) => PthreadMutexattrSettypeCore(ctx, ctx[CpuRegister.Rdi], unchecked((int)ctx[CpuRegister.Rsi]));
[SysAbiExport(
Nid = "5txKfcMUAok",
ExportName = "pthread_mutexattr_setprotocol",
Target = Generation.Gen4 | Generation.Gen5,
LibraryName = "libKernel")]
public static int PosixPthreadMutexattrSetprotocol(CpuContext ctx) => PthreadMutexattrSetprotocolCore(ctx, ctx[CpuRegister.Rdi], unchecked((int)ctx[CpuRegister.Rsi]));
[SysAbiExport(
Nid = "2Tb92quprl0",
ExportName = "scePthreadCondInit",
@@ -242,7 +249,7 @@ public static class KernelPthreadCompatExports
ExportName = "scePthreadCondTimedwait",
Target = Generation.Gen4 | Generation.Gen5,
LibraryName = "libKernel")]
public static int PthreadCondTimedwait(CpuContext ctx) => PthreadCondWaitCore(ctx, ctx[CpuRegister.Rdi], ctx[CpuRegister.Rsi], timed: true);
public static int PthreadCondTimedwait(CpuContext ctx) => PthreadCondWaitCore(ctx, ctx[CpuRegister.Rdi], ctx[CpuRegister.Rsi], timed: true, timeoutUsec: unchecked((uint)ctx[CpuRegister.Rdx]));
[SysAbiExport(
Nid = "kDh-NfxgMtE",
@@ -390,7 +397,7 @@ public static class KernelPthreadCompatExports
}
}
var currentThreadId = GetCurrentThreadId();
var currentThreadId = KernelPthreadState.GetCurrentThreadHandle();
lock (state)
{
if (state.OwnerThreadId == currentThreadId)
@@ -402,8 +409,11 @@ public static class KernelPthreadCompatExports
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
TracePthreadMutex(ctx, tryOnly ? "trylock" : "lock", mutexAddress, resolvedAddress, state, currentThreadId, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_ALREADY_EXISTS);
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_ALREADY_EXISTS;
var ownedResult = tryOnly
? (int)OrbisGen2Result.ORBIS_GEN2_ERROR_BUSY
: (int)OrbisGen2Result.ORBIS_GEN2_ERROR_DEADLOCK;
TracePthreadMutex(ctx, tryOnly ? "trylock" : "lock", mutexAddress, resolvedAddress, state, currentThreadId, ownedResult);
return ownedResult;
}
}
@@ -418,8 +428,8 @@ public static class KernelPthreadCompatExports
}
if (!acquired)
{
TracePthreadMutex(ctx, tryOnly ? "trylock" : "lock", mutexAddress, resolvedAddress, state, currentThreadId, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_ALREADY_EXISTS);
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_ALREADY_EXISTS;
TracePthreadMutex(ctx, tryOnly ? "trylock" : "lock", mutexAddress, resolvedAddress, state, currentThreadId, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_BUSY);
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_BUSY;
}
lock (state)
@@ -448,11 +458,11 @@ public static class KernelPthreadCompatExports
if (state is null)
{
TracePthreadMutex(ctx, "unlock", mutexAddress, resolvedAddress, null, GetCurrentThreadId(), (int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
TracePthreadMutex(ctx, "unlock", mutexAddress, resolvedAddress, null, KernelPthreadState.GetCurrentThreadHandle(), (int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND);
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_NOT_FOUND;
}
var currentThreadId = GetCurrentThreadId();
var currentThreadId = KernelPthreadState.GetCurrentThreadHandle();
var shouldRelease = false;
lock (state)
{
@@ -464,8 +474,8 @@ public static class KernelPthreadCompatExports
if (requireOwner && state.OwnerThreadId != currentThreadId)
{
TracePthreadMutex(ctx, "unlock", mutexAddress, resolvedAddress, state, currentThreadId, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT);
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
TracePthreadMutex(ctx, "unlock", mutexAddress, resolvedAddress, state, currentThreadId, (int)OrbisGen2Result.ORBIS_GEN2_ERROR_PERMISSION_DENIED);
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_PERMISSION_DENIED;
}
state.RecursionCount--;
@@ -503,8 +513,8 @@ public static class KernelPthreadCompatExports
var syntheticHandle = AllocateSyntheticHandle(SyntheticMutexAttrHandleBase, ref _nextSyntheticMutexAttrHandleId);
lock (_stateGate)
{
_mutexAttrStates[attrAddress] = new PthreadMutexAttrState(MutexTypeNormal, 0);
_mutexAttrStates[syntheticHandle] = new PthreadMutexAttrState(MutexTypeNormal, 0);
_mutexAttrStates[attrAddress] = new PthreadMutexAttrState(MutexTypeDefault, 0);
_mutexAttrStates[syntheticHandle] = new PthreadMutexAttrState(MutexTypeDefault, 0);
}
_ = ctx.TryWriteUInt64(attrAddress, syntheticHandle);
@@ -543,10 +553,10 @@ public static class KernelPthreadCompatExports
{
if (!_mutexAttrStates.TryGetValue(resolvedAddress, out var state))
{
state = new PthreadMutexAttrState(MutexTypeNormal, 0);
state = new PthreadMutexAttrState(MutexTypeDefault, 0);
}
_mutexAttrStates[resolvedAddress] = state with { Type = type };
_mutexAttrStates[resolvedAddress] = state with { Type = NormalizeMutexType(type) };
if (resolvedAddress != attrAddress)
{
_mutexAttrStates[attrAddress] = _mutexAttrStates[resolvedAddress];
@@ -568,7 +578,7 @@ public static class KernelPthreadCompatExports
{
if (!_mutexAttrStates.TryGetValue(resolvedAddress, out var state))
{
state = new PthreadMutexAttrState(MutexTypeNormal, 0);
state = new PthreadMutexAttrState(MutexTypeDefault, 0);
}
_mutexAttrStates[resolvedAddress] = state with { Protocol = protocol };
@@ -651,7 +661,7 @@ public static class KernelPthreadCompatExports
{
return _mutexAttrStates.TryGetValue(resolvedAddress, out var state)
? state
: default;
: new PthreadMutexAttrState(MutexTypeDefault, 0);
}
}
@@ -691,55 +701,66 @@ public static class KernelPthreadCompatExports
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
private static int PthreadCondWaitCore(CpuContext ctx, ulong condAddress, ulong mutexAddress, bool timed)
private static int PthreadCondWaitCore(CpuContext ctx, ulong condAddress, ulong mutexAddress, bool timed, uint timeoutUsec = 0)
{
if (condAddress == 0 || mutexAddress == 0)
{
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
}
PthreadCondState state;
lock (_stateGate)
{
if (!_condStates.TryGetValue(condAddress, out var state))
if (!_condStates.TryGetValue(condAddress, out state!))
{
state = new PthreadCondState();
_condStates[condAddress] = state;
}
}
var waitResult = (int)OrbisGen2Result.ORBIS_GEN2_OK;
lock (state.SyncRoot)
{
state.Waiters++;
if (state.PendingSignals > 0)
var observedEpoch = state.SignalEpoch;
TracePthreadCond("wait-enter", condAddress, mutexAddress, state, timed, waitResult);
var unlockResult = PthreadMutexUnlockCore(ctx, mutexAddress, requireOwner: true);
if (unlockResult != (int)OrbisGen2Result.ORBIS_GEN2_OK)
{
state.PendingSignals--;
state.Waiters--;
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
TracePthreadCond("wait-unlock-fail", condAddress, mutexAddress, state, timed, unlockResult);
return unlockResult;
}
}
var unlockResult = PthreadMutexUnlockCore(ctx, mutexAddress, requireOwner: true);
if (unlockResult != (int)OrbisGen2Result.ORBIS_GEN2_OK)
{
return unlockResult;
}
while (state.SignalEpoch == observedEpoch)
{
if (!timed)
{
Monitor.Wait(state.SyncRoot);
continue;
}
if (timed)
{
Thread.Sleep(1);
}
else
{
Thread.Yield();
if (!Monitor.Wait(state.SyncRoot, GetCondWaitTimeout(timeoutUsec)))
{
waitResult = (int)OrbisGen2Result.ORBIS_GEN2_ERROR_TIMED_OUT;
break;
}
}
state.Waiters = Math.Max(0, state.Waiters - 1);
TracePthreadCond(waitResult == (int)OrbisGen2Result.ORBIS_GEN2_OK ? "wait-wake" : "wait-timeout", condAddress, mutexAddress, state, timed, waitResult);
}
var lockResult = PthreadMutexLockCore(ctx, mutexAddress, tryOnly: false);
lock (_stateGate)
if (lockResult != (int)OrbisGen2Result.ORBIS_GEN2_OK)
{
if (_condStates.TryGetValue(condAddress, out var state))
{
state.Waiters = Math.Max(0, state.Waiters - 1);
}
TracePthreadCond("wait-relock-fail", condAddress, mutexAddress, state, timed, lockResult);
return lockResult;
}
return lockResult;
TracePthreadCond(waitResult == (int)OrbisGen2Result.ORBIS_GEN2_OK ? "wait-exit" : "wait-exit-timeout", condAddress, mutexAddress, state, timed, waitResult);
return waitResult;
}
private static int PthreadCondSignalCore(ulong condAddress, bool broadcast)
@@ -749,47 +770,70 @@ public static class KernelPthreadCompatExports
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_INVALID_ARGUMENT;
}
PthreadCondState state;
lock (_stateGate)
{
if (!_condStates.TryGetValue(condAddress, out var state))
if (!_condStates.TryGetValue(condAddress, out state!))
{
state = new PthreadCondState();
_condStates[condAddress] = state;
}
}
if (broadcast)
lock (state.SyncRoot)
{
if (state.Waiters > 0)
{
state.PendingSignals += Math.Max(1, state.Waiters);
}
else
{
state.PendingSignals++;
state.SignalEpoch++;
if (broadcast)
{
Monitor.PulseAll(state.SyncRoot);
}
else
{
Monitor.Pulse(state.SyncRoot);
}
}
TracePthreadCond(broadcast ? "broadcast" : "signal", condAddress, mutexAddress: 0, state, timed: false, (int)OrbisGen2Result.ORBIS_GEN2_OK);
}
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
private static ulong GetCurrentThreadId()
private static TimeSpan GetCondWaitTimeout(uint timeoutUsec)
{
if (_currentThreadId != 0)
if (timeoutUsec == 0)
{
return _currentThreadId;
return TimeSpan.Zero;
}
_currentThreadId = unchecked((ulong)Interlocked.Increment(ref _nextSyntheticThreadId));
return _currentThreadId;
return TimeSpan.FromTicks((long)timeoutUsec * 10L);
}
private static void TracePthreadSelf(CpuContext ctx, ulong currentThreadId)
private static int NormalizeMutexType(int type)
{
return type switch
{
0 => MutexTypeDefault,
1 => MutexTypeErrorCheck,
2 => MutexTypeRecursive,
3 => MutexTypeNormal,
4 => MutexTypeNormal,
_ => MutexTypeDefault,
};
}
private static void TracePthreadSelf(CpuContext ctx, ulong currentThreadHandle)
{
if (!ShouldTracePthread())
{
return;
}
var currentThreadId = KernelPthreadState.GetCurrentThreadUniqueId();
Console.Error.WriteLine(
$"[LOADER][TRACE] pthread_self: stale_rdi=0x{ctx[CpuRegister.Rdi]:X16} thread=0x{currentThreadId:X16}");
$"[LOADER][TRACE] pthread_self: stale_rdi=0x{ctx[CpuRegister.Rdi]:X16} thread=0x{currentThreadHandle:X16} tid=0x{currentThreadId:X16}");
}
private static void TracePthreadMutex(CpuContext ctx, string operation, ulong mutexAddress, ulong resolvedAddress, PthreadMutexState? state, ulong currentThreadId, int result)
@@ -808,6 +852,18 @@ public static class KernelPthreadCompatExports
$"recursion={(state?.RecursionCount ?? 0)} type={(state?.Type ?? 0)} result=0x{unchecked((uint)result):X8}");
}
private static void TracePthreadCond(string operation, ulong condAddress, ulong mutexAddress, PthreadCondState? state, bool timed, int result)
{
if (!ShouldTracePthread())
{
return;
}
Console.Error.WriteLine(
$"[LOADER][TRACE] pthread_cond_{operation}: cond=0x{condAddress:X16} mutex=0x{mutexAddress:X16} " +
$"waiters={(state?.Waiters ?? 0)} epoch=0x{(state?.SignalEpoch ?? 0):X} timed={timed} result=0x{unchecked((uint)result):X8}");
}
private static bool ShouldTracePthread()
{
return string.Equals(Environment.GetEnvironmentVariable("SHARPEMU_LOG_PTHREADS"), "1", StringComparison.Ordinal);
src/SharpEmu.Libs/Kernel/KernelPthreadExtendedCompatExports.cs
+5 -1
View File
@@ -841,9 +841,13 @@ public static class KernelPthreadExtendedCompatExports
return state;
}
var name = KernelPthreadState.TryGetThreadIdentity(thread, out var identity)
? identity.Name
: $"Thread-{thread:X}";
state = new ThreadState
{
Name = $"Thread-{thread:X}",
Name = name,
Priority = DefaultThreadPriority,
AffinityMask = DefaultThreadAffinityMask,
DetachState = DefaultDetachState,
src/SharpEmu.Libs/Kernel/KernelPthreadState.cs
+78
View File
@@ -0,0 +1,78 @@
// Copyright (C) 2026 SharpEmu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
using System.Runtime.InteropServices;
using System.Threading;
namespace SharpEmu.Libs.Kernel;
internal static class KernelPthreadState
{
private const int ThreadObjectSize = 0x1000;
private static readonly object Gate = new();
private static readonly Dictionary<ulong, ThreadIdentity> Threads = new();
private static readonly byte[] ZeroThreadObject = new byte[ThreadObjectSize];
private static long _nextUniqueThreadId = 1;
[ThreadStatic]
private static ulong _currentThreadHandle;
[ThreadStatic]
private static ulong _currentThreadUniqueId;
internal readonly record struct ThreadIdentity(ulong UniqueId, string Name);
internal static ulong GetCurrentThreadHandle()
{
EnsureCurrentThreadRegistered();
return _currentThreadHandle;
}
internal static ulong GetCurrentThreadUniqueId()
{
EnsureCurrentThreadRegistered();
return _currentThreadUniqueId;
}
internal static ulong CreateThreadHandle(string name)
{
var uniqueId = unchecked((ulong)Interlocked.Increment(ref _nextUniqueThreadId));
return AllocateThreadHandle(uniqueId, name);
}
internal static bool TryGetThreadIdentity(ulong threadHandle, out ThreadIdentity identity)
{
lock (Gate)
{
return Threads.TryGetValue(threadHandle, out identity);
}
}
private static void EnsureCurrentThreadRegistered()
{
if (_currentThreadHandle != 0)
{
return;
}
var uniqueId = unchecked((ulong)Interlocked.Increment(ref _nextUniqueThreadId));
var name = $"Thread-{uniqueId:X}";
_currentThreadHandle = AllocateThreadHandle(uniqueId, name);
_currentThreadUniqueId = uniqueId;
}
private static ulong AllocateThreadHandle(ulong uniqueId, string name)
{
var pointer = Marshal.AllocHGlobal(ThreadObjectSize);
Marshal.Copy(ZeroThreadObject, 0, pointer, ThreadObjectSize);
var handle = unchecked((ulong)pointer.ToInt64());
lock (Gate)
{
Threads[handle] = new ThreadIdentity(uniqueId, string.IsNullOrWhiteSpace(name) ? $"Thread-{uniqueId:X}" : name);
}
return handle;
}
}