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Move most of signal handling to Ryujinx.Cpu project (#6128)

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* Move most of signal handling to Ryujinx.Cpu project

* Format whitespace

* Remove unused member

* Format whitespace

* This does not need to be public anymore
This commit is contained in:
gdkchan 2024-01-18 14:08:40 -03:00 committed by GitHub
parent 72634c80f4
commit 2dbbc9bc05
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GPG key ID: B5690EEEBB952194
12 changed files with 253 additions and 253 deletions
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2
src/ARMeilleure/Memory/IJitMemoryAllocator.cs
View file

@ -4,7 +4,5 @@ namespace ARMeilleure.Memory
{
IJitMemoryBlock Allocate(ulong size);
IJitMemoryBlock Reserve(ulong size);
ulong GetPageSize();
}
}

2
src/ARMeilleure/Memory/MemoryManagerType.cs
View file

@ -31,7 +31,7 @@ namespace ARMeilleure.Memory
HostMappedUnsafe,
}
static class MemoryManagerTypeExtensions
public static class MemoryManagerTypeExtensions
{
public static bool IsHostMapped(this MemoryManagerType type)
{

199
src/ARMeilleure/Signal/NativeSignalHandler.cs → src/ARMeilleure/Signal/NativeSignalHandlerGenerator.cs
View file

@ -1,63 +1,14 @@
using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.Memory;
using ARMeilleure.Translation;
using ARMeilleure.Translation.Cache;
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
namespace ARMeilleure.Signal
{
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct SignalHandlerRange
public static class NativeSignalHandlerGenerator
{
public int IsActive;
public nuint RangeAddress;
public nuint RangeEndAddress;
public IntPtr ActionPointer;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct SignalHandlerConfig
{
/// <summary>
/// The byte offset of the faulting address in the SigInfo or ExceptionRecord struct.
/// </summary>
public int StructAddressOffset;
/// <summary>
/// The byte offset of the write flag in the SigInfo or ExceptionRecord struct.
/// </summary>
public int StructWriteOffset;
/// <summary>
/// The sigaction handler that was registered before this one. (unix only)
/// </summary>
public nuint UnixOldSigaction;
/// <summary>
/// The type of the previous sigaction. True for the 3 argument variant. (unix only)
/// </summary>
public int UnixOldSigaction3Arg;
public SignalHandlerRange Range0;
public SignalHandlerRange Range1;
public SignalHandlerRange Range2;
public SignalHandlerRange Range3;
public SignalHandlerRange Range4;
public SignalHandlerRange Range5;
public SignalHandlerRange Range6;
public SignalHandlerRange Range7;
}
public static class NativeSignalHandler
{
private delegate void UnixExceptionHandler(int sig, IntPtr info, IntPtr ucontext);
[UnmanagedFunctionPointer(CallingConvention.Winapi)]
private delegate int VectoredExceptionHandler(IntPtr exceptionInfo);
private const int MaxTrackedRanges = 8;
public const int MaxTrackedRanges = 8;
private const int StructAddressOffset = 0;
private const int StructWriteOffset = 4;
@ -70,125 +21,10 @@ namespace ARMeilleure.Signal
private const uint EXCEPTION_ACCESS_VIOLATION = 0xc0000005;
private static ulong _pageSize;
private static ulong _pageMask;
private static readonly IntPtr _handlerConfig;
private static IntPtr _signalHandlerPtr;
private static IntPtr _signalHandlerHandle;
private static readonly object _lock = new();
private static bool _initialized;
static NativeSignalHandler()
private static Operand EmitGenericRegionCheck(EmitterContext context, IntPtr signalStructPtr, Operand faultAddress, Operand isWrite, int rangeStructSize, ulong pageSize)
{
_handlerConfig = Marshal.AllocHGlobal(Unsafe.SizeOf<SignalHandlerConfig>());
ref SignalHandlerConfig config = ref GetConfigRef();
ulong pageMask = pageSize - 1;
config = new SignalHandlerConfig();
}
public static void Initialize(IJitMemoryAllocator allocator)
{
JitCache.Initialize(allocator);
}
public static void InitializeSignalHandler(ulong pageSize, Func<IntPtr, IntPtr, IntPtr> customSignalHandlerFactory = null)
{
if (_initialized)
{
return;
}
lock (_lock)
{
if (_initialized)
{
return;
}
_pageSize = pageSize;
_pageMask = pageSize - 1;
ref SignalHandlerConfig config = ref GetConfigRef();
if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
_signalHandlerPtr = Marshal.GetFunctionPointerForDelegate(GenerateUnixSignalHandler(_handlerConfig));
if (customSignalHandlerFactory != null)
{
_signalHandlerPtr = customSignalHandlerFactory(UnixSignalHandlerRegistration.GetSegfaultExceptionHandler().sa_handler, _signalHandlerPtr);
}
var old = UnixSignalHandlerRegistration.RegisterExceptionHandler(_signalHandlerPtr);
config.UnixOldSigaction = (nuint)(ulong)old.sa_handler;
config.UnixOldSigaction3Arg = old.sa_flags & 4;
}
else
{
config.StructAddressOffset = 40; // ExceptionInformation1
config.StructWriteOffset = 32; // ExceptionInformation0
_signalHandlerPtr = Marshal.GetFunctionPointerForDelegate(GenerateWindowsSignalHandler(_handlerConfig));
if (customSignalHandlerFactory != null)
{
_signalHandlerPtr = customSignalHandlerFactory(IntPtr.Zero, _signalHandlerPtr);
}
_signalHandlerHandle = WindowsSignalHandlerRegistration.RegisterExceptionHandler(_signalHandlerPtr);
}
_initialized = true;
}
}
private static unsafe ref SignalHandlerConfig GetConfigRef()
{
return ref Unsafe.AsRef<SignalHandlerConfig>((void*)_handlerConfig);
}
public static unsafe bool AddTrackedRegion(nuint address, nuint endAddress, IntPtr action)
{
var ranges = &((SignalHandlerConfig*)_handlerConfig)->Range0;
for (int i = 0; i < MaxTrackedRanges; i++)
{
if (ranges[i].IsActive == 0)
{
ranges[i].RangeAddress = address;
ranges[i].RangeEndAddress = endAddress;
ranges[i].ActionPointer = action;
ranges[i].IsActive = 1;
return true;
}
}
return false;
}
public static unsafe bool RemoveTrackedRegion(nuint address)
{
var ranges = &((SignalHandlerConfig*)_handlerConfig)->Range0;
for (int i = 0; i < MaxTrackedRanges; i++)
{
if (ranges[i].IsActive == 1 && ranges[i].RangeAddress == address)
{
ranges[i].IsActive = 0;
return true;
}
}
return false;
}
private static Operand EmitGenericRegionCheck(EmitterContext context, IntPtr signalStructPtr, Operand faultAddress, Operand isWrite)
{
Operand inRegionLocal = context.AllocateLocal(OperandType.I32);
context.Copy(inRegionLocal, Const(0));
@ -196,7 +32,7 @@ namespace ARMeilleure.Signal
for (int i = 0; i < MaxTrackedRanges; i++)
{
ulong rangeBaseOffset = (ulong)(RangeOffset + i * Unsafe.SizeOf<SignalHandlerRange>());
ulong rangeBaseOffset = (ulong)(RangeOffset + i * rangeStructSize);
Operand nextLabel = Label();
@ -210,13 +46,12 @@ namespace ARMeilleure.Signal
// Is the fault address within this tracked region?
Operand inRange = context.BitwiseAnd(
context.ICompare(faultAddress, rangeAddress, Comparison.GreaterOrEqualUI),
context.ICompare(faultAddress, rangeEndAddress, Comparison.LessUI)
);
context.ICompare(faultAddress, rangeEndAddress, Comparison.LessUI));
// Only call tracking if in range.
context.BranchIfFalse(nextLabel, inRange, BasicBlockFrequency.Cold);
Operand offset = context.BitwiseAnd(context.Subtract(faultAddress, rangeAddress), Const(~_pageMask));
Operand offset = context.BitwiseAnd(context.Subtract(faultAddress, rangeAddress), Const(~pageMask));
// Call the tracking action, with the pointer's relative offset to the base address.
Operand trackingActionPtr = context.Load(OperandType.I64, Const((ulong)signalStructPtr + rangeBaseOffset + 20));
@ -227,7 +62,7 @@ namespace ARMeilleure.Signal
// Tracking action should be non-null to call it, otherwise assume false return.
context.BranchIfFalse(skipActionLabel, trackingActionPtr);
Operand result = context.Call(trackingActionPtr, OperandType.I32, offset, Const(_pageSize), isWrite);
Operand result = context.Call(trackingActionPtr, OperandType.I32, offset, Const(pageSize), isWrite);
context.Copy(inRegionLocal, result);
context.MarkLabel(skipActionLabel);
@ -269,8 +104,7 @@ namespace ARMeilleure.Signal
Operand esr = context.Load(OperandType.I64, context.Add(ctxPtr, Const(EsrOffset)));
return context.BitwiseAnd(esr, Const(0x40ul));
}
if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
else if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
{
const ulong ErrOffset = 4; // __es.__err
Operand err = context.Load(OperandType.I64, context.Add(ctxPtr, Const(ErrOffset)));
@ -310,8 +144,7 @@ namespace ARMeilleure.Signal
Operand esr = context.Load(OperandType.I64, context.Add(auxPtr, Const(8ul)));
return context.BitwiseAnd(esr, Const(0x40ul));
}
if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
else if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
{
const int ErrOffset = 192; // uc_mcontext.gregs[REG_ERR]
Operand err = context.Load(OperandType.I64, context.Add(ucontextPtr, Const(ErrOffset)));
@ -322,7 +155,7 @@ namespace ARMeilleure.Signal
throw new PlatformNotSupportedException();
}
private static UnixExceptionHandler GenerateUnixSignalHandler(IntPtr signalStructPtr)
public static byte[] GenerateUnixSignalHandler(IntPtr signalStructPtr, int rangeStructSize, ulong pageSize)
{
EmitterContext context = new();
@ -335,7 +168,7 @@ namespace ARMeilleure.Signal
Operand isWrite = context.ICompareNotEqual(writeFlag, Const(0L)); // Normalize to 0/1.
Operand isInRegion = EmitGenericRegionCheck(context, signalStructPtr, faultAddress, isWrite);
Operand isInRegion = EmitGenericRegionCheck(context, signalStructPtr, faultAddress, isWrite, rangeStructSize, pageSize);
Operand endLabel = Label();
@ -367,10 +200,10 @@ namespace ARMeilleure.Signal
OperandType[] argTypes = new OperandType[] { OperandType.I32, OperandType.I64, OperandType.I64 };
return Compiler.Compile(cfg, argTypes, OperandType.None, CompilerOptions.HighCq, RuntimeInformation.ProcessArchitecture).Map<UnixExceptionHandler>();
return Compiler.Compile(cfg, argTypes, OperandType.None, CompilerOptions.HighCq, RuntimeInformation.ProcessArchitecture).Code;
}
private static VectoredExceptionHandler GenerateWindowsSignalHandler(IntPtr signalStructPtr)
public static byte[] GenerateWindowsSignalHandler(IntPtr signalStructPtr, int rangeStructSize, ulong pageSize)
{
EmitterContext context = new();
@ -399,7 +232,7 @@ namespace ARMeilleure.Signal
Operand isWrite = context.ICompareNotEqual(writeFlag, Const(0L)); // Normalize to 0/1.
Operand isInRegion = EmitGenericRegionCheck(context, signalStructPtr, faultAddress, isWrite);
Operand isInRegion = EmitGenericRegionCheck(context, signalStructPtr, faultAddress, isWrite, rangeStructSize, pageSize);
Operand endLabel = Label();
@ -421,7 +254,7 @@ namespace ARMeilleure.Signal
OperandType[] argTypes = new OperandType[] { OperandType.I64 };
return Compiler.Compile(cfg, argTypes, OperandType.I32, CompilerOptions.HighCq, RuntimeInformation.ProcessArchitecture).Map<VectoredExceptionHandler>();
return Compiler.Compile(cfg, argTypes, OperandType.I32, CompilerOptions.HighCq, RuntimeInformation.ProcessArchitecture).Code;
}
}
}

37
src/ARMeilleure/Signal/WindowsPartialUnmapHandler.cs
View file

@ -2,7 +2,7 @@ using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.Translation;
using Ryujinx.Common.Memory.PartialUnmaps;
using System;
using System.Runtime.InteropServices;
using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
namespace ARMeilleure.Signal
@ -10,8 +10,28 @@ namespace ARMeilleure.Signal
/// <summary>
/// Methods to handle signals caused by partial unmaps. See the structs for C# implementations of the methods.
/// </summary>
internal static class WindowsPartialUnmapHandler
internal static partial class WindowsPartialUnmapHandler
{
[LibraryImport("kernel32.dll", SetLastError = true, EntryPoint = "LoadLibraryA")]
private static partial IntPtr LoadLibrary([MarshalAs(UnmanagedType.LPStr)] string lpFileName);
[LibraryImport("kernel32.dll", SetLastError = true)]
private static partial IntPtr GetProcAddress(IntPtr hModule, [MarshalAs(UnmanagedType.LPStr)] string procName);
private static IntPtr _getCurrentThreadIdPtr;
public static IntPtr GetCurrentThreadIdFunc()
{
if (_getCurrentThreadIdPtr == IntPtr.Zero)
{
IntPtr handle = LoadLibrary("kernel32.dll");
_getCurrentThreadIdPtr = GetProcAddress(handle, "GetCurrentThreadId");
}
return _getCurrentThreadIdPtr;
}
public static Operand EmitRetryFromAccessViolation(EmitterContext context)
{
IntPtr partialRemapStatePtr = PartialUnmapState.GlobalState;
@ -20,7 +40,7 @@ namespace ARMeilleure.Signal
// Get the lock first.
EmitNativeReaderLockAcquire(context, IntPtr.Add(partialRemapStatePtr, PartialUnmapState.PartialUnmapLockOffset));
IntPtr getCurrentThreadId = WindowsSignalHandlerRegistration.GetCurrentThreadIdFunc();
IntPtr getCurrentThreadId = GetCurrentThreadIdFunc();
Operand threadId = context.Call(Const((ulong)getCurrentThreadId), OperandType.I32);
Operand threadIndex = EmitThreadLocalMapIntGetOrReserve(context, localCountsPtr, threadId, Const(0));
@ -137,17 +157,6 @@ namespace ARMeilleure.Signal
return context.Add(structsPtr, context.SignExtend32(OperandType.I64, offset));
}
#pragma warning disable IDE0051 // Remove unused private member
private static void EmitThreadLocalMapIntRelease(EmitterContext context, IntPtr threadLocalMapPtr, Operand threadId, Operand index)
{
Operand offset = context.Multiply(index, Const(sizeof(int)));
Operand idsPtr = Const((ulong)IntPtr.Add(threadLocalMapPtr, ThreadLocalMap<int>.ThreadIdsOffset));
Operand idPtr = context.Add(idsPtr, context.SignExtend32(OperandType.I64, offset));
context.CompareAndSwap(idPtr, threadId, Const(0));
}
#pragma warning restore IDE0051
private static void EmitAtomicAddI32(EmitterContext context, Operand ptr, Operand additive)
{
Operand loop = Label();

44
src/ARMeilleure/Signal/WindowsSignalHandlerRegistration.cs
View file

@ -1,44 +0,0 @@
using System;
using System.Runtime.InteropServices;
namespace ARMeilleure.Signal
{
unsafe partial class WindowsSignalHandlerRegistration
{
[LibraryImport("kernel32.dll")]
private static partial IntPtr AddVectoredExceptionHandler(uint first, IntPtr handler);
[LibraryImport("kernel32.dll")]
private static partial ulong RemoveVectoredExceptionHandler(IntPtr handle);
[LibraryImport("kernel32.dll", SetLastError = true, EntryPoint = "LoadLibraryA")]
private static partial IntPtr LoadLibrary([MarshalAs(UnmanagedType.LPStr)] string lpFileName);
[LibraryImport("kernel32.dll", SetLastError = true)]
private static partial IntPtr GetProcAddress(IntPtr hModule, [MarshalAs(UnmanagedType.LPStr)] string procName);
private static IntPtr _getCurrentThreadIdPtr;
public static IntPtr RegisterExceptionHandler(IntPtr action)
{
return AddVectoredExceptionHandler(1, action);
}
public static bool RemoveExceptionHandler(IntPtr handle)
{
return RemoveVectoredExceptionHandler(handle) != 0;
}
public static IntPtr GetCurrentThreadIdFunc()
{
if (_getCurrentThreadIdPtr == IntPtr.Zero)
{
IntPtr handle = LoadLibrary("kernel32.dll");
_getCurrentThreadIdPtr = GetProcAddress(handle, "GetCurrentThreadId");
}
return _getCurrentThreadIdPtr;
}
}
}

5
src/ARMeilleure/Translation/Translator.cs
View file

@ -79,11 +79,6 @@ namespace ARMeilleure.Translation
Stubs = new TranslatorStubs(this);
FunctionTable.Fill = (ulong)Stubs.SlowDispatchStub;
if (memory.Type.IsHostMapped())
{
NativeSignalHandler.InitializeSignalHandler(allocator.GetPageSize());
}
}
public IPtcLoadState LoadDiskCache(string titleIdText, string displayVersion, bool enabled)

8
src/Ryujinx.Cpu/Jit/JitCpuContext.cs
View file

@ -1,5 +1,7 @@
using ARMeilleure.Memory;
using ARMeilleure.Translation;
using Ryujinx.Cpu.Signal;
using Ryujinx.Memory;
namespace Ryujinx.Cpu.Jit
{
@ -12,6 +14,12 @@ namespace Ryujinx.Cpu.Jit
{
_tickSource = tickSource;
_translator = new Translator(new JitMemoryAllocator(), memory, for64Bit);
if (memory.Type.IsHostMapped())
{
NativeSignalHandler.InitializeSignalHandler(MemoryBlock.GetPageSize());
}
memory.UnmapEvent += UnmapHandler;
}

2
src/Ryujinx.Cpu/Jit/JitMemoryAllocator.cs
View file

@ -7,7 +7,5 @@ namespace Ryujinx.Cpu.Jit
{
public IJitMemoryBlock Allocate(ulong size) => new JitMemoryBlock(size, MemoryAllocationFlags.None);
public IJitMemoryBlock Reserve(ulong size) => new JitMemoryBlock(size, MemoryAllocationFlags.Reserve | MemoryAllocationFlags.Jit);
public ulong GetPageSize() => MemoryBlock.GetPageSize();
}
}

2
src/Ryujinx.Cpu/MemoryEhMeilleure.cs
View file

@ -1,4 +1,4 @@
using ARMeilleure.Signal;
using Ryujinx.Cpu.Signal;
using Ryujinx.Memory;
using Ryujinx.Memory.Tracking;
using System;

179
src/Ryujinx.Cpu/Signal/NativeSignalHandler.cs Normal file
View file

@ -0,0 +1,179 @@
using ARMeilleure.Signal;
using Ryujinx.Common;
using Ryujinx.Memory;
using System;
using System.Diagnostics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace Ryujinx.Cpu.Signal
{
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct SignalHandlerRange
{
public int IsActive;
public nuint RangeAddress;
public nuint RangeEndAddress;
public IntPtr ActionPointer;
}
[InlineArray(NativeSignalHandlerGenerator.MaxTrackedRanges)]
struct SignalHandlerRangeArray
{
public SignalHandlerRange Range0;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct SignalHandlerConfig
{
/// <summary>
/// The byte offset of the faulting address in the SigInfo or ExceptionRecord struct.
/// </summary>
public int StructAddressOffset;
/// <summary>
/// The byte offset of the write flag in the SigInfo or ExceptionRecord struct.
/// </summary>
public int StructWriteOffset;
/// <summary>
/// The sigaction handler that was registered before this one. (unix only)
/// </summary>
public nuint UnixOldSigaction;
/// <summary>
/// The type of the previous sigaction. True for the 3 argument variant. (unix only)
/// </summary>
public int UnixOldSigaction3Arg;
/// <summary>
/// Fixed size array of tracked ranges.
/// </summary>
public SignalHandlerRangeArray Ranges;
}
static class NativeSignalHandler
{
private static readonly IntPtr _handlerConfig;
private static IntPtr _signalHandlerPtr;
private static MemoryBlock _codeBlock;
private static readonly object _lock = new();
private static bool _initialized;
static NativeSignalHandler()
{
_handlerConfig = Marshal.AllocHGlobal(Unsafe.SizeOf<SignalHandlerConfig>());
ref SignalHandlerConfig config = ref GetConfigRef();
config = new SignalHandlerConfig();
}
public static void InitializeSignalHandler(ulong pageSize, Func<IntPtr, IntPtr, IntPtr> customSignalHandlerFactory = null)
{
if (_initialized)
{
return;
}
lock (_lock)
{
if (_initialized)
{
return;
}
int rangeStructSize = Unsafe.SizeOf<SignalHandlerRange>();
ref SignalHandlerConfig config = ref GetConfigRef();
if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
_signalHandlerPtr = MapCode(NativeSignalHandlerGenerator.GenerateUnixSignalHandler(_handlerConfig, rangeStructSize, pageSize));
if (customSignalHandlerFactory != null)
{
_signalHandlerPtr = customSignalHandlerFactory(UnixSignalHandlerRegistration.GetSegfaultExceptionHandler().sa_handler, _signalHandlerPtr);
}
var old = UnixSignalHandlerRegistration.RegisterExceptionHandler(_signalHandlerPtr);
config.UnixOldSigaction = (nuint)(ulong)old.sa_handler;
config.UnixOldSigaction3Arg = old.sa_flags & 4;
}
else
{
config.StructAddressOffset = 40; // ExceptionInformation1
config.StructWriteOffset = 32; // ExceptionInformation0
_signalHandlerPtr = MapCode(NativeSignalHandlerGenerator.GenerateWindowsSignalHandler(_handlerConfig, rangeStructSize, pageSize));
if (customSignalHandlerFactory != null)
{
_signalHandlerPtr = customSignalHandlerFactory(IntPtr.Zero, _signalHandlerPtr);
}
WindowsSignalHandlerRegistration.RegisterExceptionHandler(_signalHandlerPtr);
}
_initialized = true;
}
}
private static IntPtr MapCode(ReadOnlySpan<byte> code)
{
Debug.Assert(_codeBlock == null);
ulong codeSizeAligned = BitUtils.AlignUp((ulong)code.Length, MemoryBlock.GetPageSize());
_codeBlock = new MemoryBlock(codeSizeAligned);
_codeBlock.Write(0, code);
_codeBlock.Reprotect(0, codeSizeAligned, MemoryPermission.ReadAndExecute);
return _codeBlock.Pointer;
}
private static unsafe ref SignalHandlerConfig GetConfigRef()
{
return ref Unsafe.AsRef<SignalHandlerConfig>((void*)_handlerConfig);
}
public static bool AddTrackedRegion(nuint address, nuint endAddress, IntPtr action)
{
Span<SignalHandlerRange> ranges = GetConfigRef().Ranges;
for (int i = 0; i < NativeSignalHandlerGenerator.MaxTrackedRanges; i++)
{
if (ranges[i].IsActive == 0)
{
ranges[i].RangeAddress = address;
ranges[i].RangeEndAddress = endAddress;
ranges[i].ActionPointer = action;
ranges[i].IsActive = 1;
return true;
}
}
return false;
}
public static bool RemoveTrackedRegion(nuint address)
{
Span<SignalHandlerRange> ranges = GetConfigRef().Ranges;
for (int i = 0; i < NativeSignalHandlerGenerator.MaxTrackedRanges; i++)
{
if (ranges[i].IsActive == 1 && ranges[i].RangeAddress == address)
{
ranges[i].IsActive = 0;
return true;
}
}
return false;
}
}
}

2
src/ARMeilleure/Signal/UnixSignalHandlerRegistration.cs → src/Ryujinx.Cpu/Signal/UnixSignalHandlerRegistration.cs
View file

@ -1,7 +1,7 @@
using System;
using System.Runtime.InteropServices;
namespace ARMeilleure.Signal
namespace Ryujinx.Cpu.Signal
{
static partial class UnixSignalHandlerRegistration
{

24
src/Ryujinx.Cpu/Signal/WindowsSignalHandlerRegistration.cs Normal file
View file

@ -0,0 +1,24 @@
using System;
using System.Runtime.InteropServices;
namespace Ryujinx.Cpu.Signal
{
static partial class WindowsSignalHandlerRegistration
{
[LibraryImport("kernel32.dll")]
private static partial IntPtr AddVectoredExceptionHandler(uint first, IntPtr handler);
[LibraryImport("kernel32.dll")]
private static partial ulong RemoveVectoredExceptionHandler(IntPtr handle);
public static IntPtr RegisterExceptionHandler(IntPtr action)
{
return AddVectoredExceptionHandler(1, action);
}
public static bool RemoveExceptionHandler(IntPtr handle)
{
return RemoveVectoredExceptionHandler(handle) != 0;
}
}
}