Move most of signal handling to Ryujinx.Cpu project (#6128)
* 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
GitHub
parent
72634c80f4
commit
2dbbc9bc05
12 changed files with 253 additions and 253 deletions
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@ -1,63 +1,14 @@
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using ARMeilleure.IntermediateRepresentation;
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using ARMeilleure.Memory;
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using ARMeilleure.Translation;
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using ARMeilleure.Translation.Cache;
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using System;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
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namespace ARMeilleure.Signal
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{
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct SignalHandlerRange
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public static class NativeSignalHandlerGenerator
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{
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public int IsActive;
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public nuint RangeAddress;
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public nuint RangeEndAddress;
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public IntPtr ActionPointer;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct SignalHandlerConfig
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{
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/// <summary>
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/// The byte offset of the faulting address in the SigInfo or ExceptionRecord struct.
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/// </summary>
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public int StructAddressOffset;
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/// <summary>
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/// The byte offset of the write flag in the SigInfo or ExceptionRecord struct.
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/// </summary>
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public int StructWriteOffset;
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/// <summary>
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/// The sigaction handler that was registered before this one. (unix only)
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/// </summary>
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public nuint UnixOldSigaction;
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/// <summary>
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/// The type of the previous sigaction. True for the 3 argument variant. (unix only)
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/// </summary>
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public int UnixOldSigaction3Arg;
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public SignalHandlerRange Range0;
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public SignalHandlerRange Range1;
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public SignalHandlerRange Range2;
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public SignalHandlerRange Range3;
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public SignalHandlerRange Range4;
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public SignalHandlerRange Range5;
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public SignalHandlerRange Range6;
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public SignalHandlerRange Range7;
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}
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public static class NativeSignalHandler
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{
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private delegate void UnixExceptionHandler(int sig, IntPtr info, IntPtr ucontext);
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[UnmanagedFunctionPointer(CallingConvention.Winapi)]
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private delegate int VectoredExceptionHandler(IntPtr exceptionInfo);
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private const int MaxTrackedRanges = 8;
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public const int MaxTrackedRanges = 8;
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private const int StructAddressOffset = 0;
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private const int StructWriteOffset = 4;
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@ -70,125 +21,10 @@ namespace ARMeilleure.Signal
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private const uint EXCEPTION_ACCESS_VIOLATION = 0xc0000005;
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private static ulong _pageSize;
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private static ulong _pageMask;
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private static readonly IntPtr _handlerConfig;
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private static IntPtr _signalHandlerPtr;
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private static IntPtr _signalHandlerHandle;
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private static readonly object _lock = new();
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private static bool _initialized;
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static NativeSignalHandler()
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private static Operand EmitGenericRegionCheck(EmitterContext context, IntPtr signalStructPtr, Operand faultAddress, Operand isWrite, int rangeStructSize, ulong pageSize)
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{
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_handlerConfig = Marshal.AllocHGlobal(Unsafe.SizeOf<SignalHandlerConfig>());
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ref SignalHandlerConfig config = ref GetConfigRef();
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ulong pageMask = pageSize - 1;
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config = new SignalHandlerConfig();
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}
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public static void Initialize(IJitMemoryAllocator allocator)
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{
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JitCache.Initialize(allocator);
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}
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public static void InitializeSignalHandler(ulong pageSize, Func<IntPtr, IntPtr, IntPtr> customSignalHandlerFactory = null)
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{
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if (_initialized)
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{
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return;
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}
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lock (_lock)
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{
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if (_initialized)
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{
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return;
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}
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_pageSize = pageSize;
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_pageMask = pageSize - 1;
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ref SignalHandlerConfig config = ref GetConfigRef();
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if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
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{
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_signalHandlerPtr = Marshal.GetFunctionPointerForDelegate(GenerateUnixSignalHandler(_handlerConfig));
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if (customSignalHandlerFactory != null)
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{
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_signalHandlerPtr = customSignalHandlerFactory(UnixSignalHandlerRegistration.GetSegfaultExceptionHandler().sa_handler, _signalHandlerPtr);
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}
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var old = UnixSignalHandlerRegistration.RegisterExceptionHandler(_signalHandlerPtr);
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config.UnixOldSigaction = (nuint)(ulong)old.sa_handler;
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config.UnixOldSigaction3Arg = old.sa_flags & 4;
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}
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else
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{
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config.StructAddressOffset = 40; // ExceptionInformation1
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config.StructWriteOffset = 32; // ExceptionInformation0
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_signalHandlerPtr = Marshal.GetFunctionPointerForDelegate(GenerateWindowsSignalHandler(_handlerConfig));
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if (customSignalHandlerFactory != null)
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{
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_signalHandlerPtr = customSignalHandlerFactory(IntPtr.Zero, _signalHandlerPtr);
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}
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_signalHandlerHandle = WindowsSignalHandlerRegistration.RegisterExceptionHandler(_signalHandlerPtr);
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}
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_initialized = true;
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}
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}
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private static unsafe ref SignalHandlerConfig GetConfigRef()
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{
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return ref Unsafe.AsRef<SignalHandlerConfig>((void*)_handlerConfig);
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}
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public static unsafe bool AddTrackedRegion(nuint address, nuint endAddress, IntPtr action)
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{
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var ranges = &((SignalHandlerConfig*)_handlerConfig)->Range0;
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for (int i = 0; i < MaxTrackedRanges; i++)
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{
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if (ranges[i].IsActive == 0)
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{
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ranges[i].RangeAddress = address;
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ranges[i].RangeEndAddress = endAddress;
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ranges[i].ActionPointer = action;
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ranges[i].IsActive = 1;
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return true;
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}
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}
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return false;
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}
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public static unsafe bool RemoveTrackedRegion(nuint address)
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{
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var ranges = &((SignalHandlerConfig*)_handlerConfig)->Range0;
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for (int i = 0; i < MaxTrackedRanges; i++)
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{
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if (ranges[i].IsActive == 1 && ranges[i].RangeAddress == address)
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{
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ranges[i].IsActive = 0;
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return true;
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}
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}
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return false;
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}
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private static Operand EmitGenericRegionCheck(EmitterContext context, IntPtr signalStructPtr, Operand faultAddress, Operand isWrite)
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{
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Operand inRegionLocal = context.AllocateLocal(OperandType.I32);
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context.Copy(inRegionLocal, Const(0));
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@ -196,7 +32,7 @@ namespace ARMeilleure.Signal
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for (int i = 0; i < MaxTrackedRanges; i++)
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{
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ulong rangeBaseOffset = (ulong)(RangeOffset + i * Unsafe.SizeOf<SignalHandlerRange>());
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ulong rangeBaseOffset = (ulong)(RangeOffset + i * rangeStructSize);
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Operand nextLabel = Label();
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@ -210,13 +46,12 @@ namespace ARMeilleure.Signal
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// Is the fault address within this tracked region?
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Operand inRange = context.BitwiseAnd(
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context.ICompare(faultAddress, rangeAddress, Comparison.GreaterOrEqualUI),
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context.ICompare(faultAddress, rangeEndAddress, Comparison.LessUI)
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);
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context.ICompare(faultAddress, rangeEndAddress, Comparison.LessUI));
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// Only call tracking if in range.
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context.BranchIfFalse(nextLabel, inRange, BasicBlockFrequency.Cold);
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Operand offset = context.BitwiseAnd(context.Subtract(faultAddress, rangeAddress), Const(~_pageMask));
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Operand offset = context.BitwiseAnd(context.Subtract(faultAddress, rangeAddress), Const(~pageMask));
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// Call the tracking action, with the pointer's relative offset to the base address.
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Operand trackingActionPtr = context.Load(OperandType.I64, Const((ulong)signalStructPtr + rangeBaseOffset + 20));
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@ -227,7 +62,7 @@ namespace ARMeilleure.Signal
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// Tracking action should be non-null to call it, otherwise assume false return.
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context.BranchIfFalse(skipActionLabel, trackingActionPtr);
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Operand result = context.Call(trackingActionPtr, OperandType.I32, offset, Const(_pageSize), isWrite);
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Operand result = context.Call(trackingActionPtr, OperandType.I32, offset, Const(pageSize), isWrite);
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context.Copy(inRegionLocal, result);
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context.MarkLabel(skipActionLabel);
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@ -269,8 +104,7 @@ namespace ARMeilleure.Signal
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Operand esr = context.Load(OperandType.I64, context.Add(ctxPtr, Const(EsrOffset)));
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return context.BitwiseAnd(esr, Const(0x40ul));
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}
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if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
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else if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
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{
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const ulong ErrOffset = 4; // __es.__err
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Operand err = context.Load(OperandType.I64, context.Add(ctxPtr, Const(ErrOffset)));
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@ -310,8 +144,7 @@ namespace ARMeilleure.Signal
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Operand esr = context.Load(OperandType.I64, context.Add(auxPtr, Const(8ul)));
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return context.BitwiseAnd(esr, Const(0x40ul));
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}
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if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
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else if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
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{
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const int ErrOffset = 192; // uc_mcontext.gregs[REG_ERR]
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Operand err = context.Load(OperandType.I64, context.Add(ucontextPtr, Const(ErrOffset)));
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@ -322,7 +155,7 @@ namespace ARMeilleure.Signal
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throw new PlatformNotSupportedException();
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}
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private static UnixExceptionHandler GenerateUnixSignalHandler(IntPtr signalStructPtr)
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public static byte[] GenerateUnixSignalHandler(IntPtr signalStructPtr, int rangeStructSize, ulong pageSize)
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{
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EmitterContext context = new();
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@ -335,7 +168,7 @@ namespace ARMeilleure.Signal
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Operand isWrite = context.ICompareNotEqual(writeFlag, Const(0L)); // Normalize to 0/1.
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Operand isInRegion = EmitGenericRegionCheck(context, signalStructPtr, faultAddress, isWrite);
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Operand isInRegion = EmitGenericRegionCheck(context, signalStructPtr, faultAddress, isWrite, rangeStructSize, pageSize);
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Operand endLabel = Label();
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@ -367,10 +200,10 @@ namespace ARMeilleure.Signal
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OperandType[] argTypes = new OperandType[] { OperandType.I32, OperandType.I64, OperandType.I64 };
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return Compiler.Compile(cfg, argTypes, OperandType.None, CompilerOptions.HighCq, RuntimeInformation.ProcessArchitecture).Map<UnixExceptionHandler>();
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return Compiler.Compile(cfg, argTypes, OperandType.None, CompilerOptions.HighCq, RuntimeInformation.ProcessArchitecture).Code;
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}
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private static VectoredExceptionHandler GenerateWindowsSignalHandler(IntPtr signalStructPtr)
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public static byte[] GenerateWindowsSignalHandler(IntPtr signalStructPtr, int rangeStructSize, ulong pageSize)
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{
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EmitterContext context = new();
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@ -399,7 +232,7 @@ namespace ARMeilleure.Signal
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Operand isWrite = context.ICompareNotEqual(writeFlag, Const(0L)); // Normalize to 0/1.
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Operand isInRegion = EmitGenericRegionCheck(context, signalStructPtr, faultAddress, isWrite);
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Operand isInRegion = EmitGenericRegionCheck(context, signalStructPtr, faultAddress, isWrite, rangeStructSize, pageSize);
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Operand endLabel = Label();
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@ -421,7 +254,7 @@ namespace ARMeilleure.Signal
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OperandType[] argTypes = new OperandType[] { OperandType.I64 };
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return Compiler.Compile(cfg, argTypes, OperandType.I32, CompilerOptions.HighCq, RuntimeInformation.ProcessArchitecture).Map<VectoredExceptionHandler>();
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return Compiler.Compile(cfg, argTypes, OperandType.I32, CompilerOptions.HighCq, RuntimeInformation.ProcessArchitecture).Code;
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}
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}
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}
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@ -1,83 +0,0 @@
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using System;
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using System.Runtime.InteropServices;
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namespace ARMeilleure.Signal
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{
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static partial class UnixSignalHandlerRegistration
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{
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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public unsafe struct SigSet
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{
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fixed long sa_mask[16];
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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public struct SigAction
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{
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public IntPtr sa_handler;
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public SigSet sa_mask;
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public int sa_flags;
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public IntPtr sa_restorer;
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}
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private const int SIGSEGV = 11;
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private const int SIGBUS = 10;
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private const int SA_SIGINFO = 0x00000004;
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[LibraryImport("libc", SetLastError = true)]
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private static partial int sigaction(int signum, ref SigAction sigAction, out SigAction oldAction);
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[LibraryImport("libc", SetLastError = true)]
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private static partial int sigaction(int signum, IntPtr sigAction, out SigAction oldAction);
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[LibraryImport("libc", SetLastError = true)]
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private static partial int sigemptyset(ref SigSet set);
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public static SigAction GetSegfaultExceptionHandler()
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{
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int result = sigaction(SIGSEGV, IntPtr.Zero, out SigAction old);
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if (result != 0)
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{
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throw new InvalidOperationException($"Could not get SIGSEGV sigaction. Error: {result}");
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}
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return old;
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}
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public static SigAction RegisterExceptionHandler(IntPtr action)
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{
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SigAction sig = new()
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{
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sa_handler = action,
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sa_flags = SA_SIGINFO,
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};
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sigemptyset(ref sig.sa_mask);
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int result = sigaction(SIGSEGV, ref sig, out SigAction old);
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if (result != 0)
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{
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throw new InvalidOperationException($"Could not register SIGSEGV sigaction. Error: {result}");
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}
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if (OperatingSystem.IsMacOS())
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{
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result = sigaction(SIGBUS, ref sig, out _);
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if (result != 0)
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{
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throw new InvalidOperationException($"Could not register SIGBUS sigaction. Error: {result}");
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}
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}
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return old;
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}
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public static bool RestoreExceptionHandler(SigAction oldAction)
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{
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return sigaction(SIGSEGV, ref oldAction, out SigAction _) == 0 && (!OperatingSystem.IsMacOS() || sigaction(SIGBUS, ref oldAction, out SigAction _) == 0);
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}
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}
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}
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@ -2,7 +2,7 @@ using ARMeilleure.IntermediateRepresentation;
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using ARMeilleure.Translation;
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using Ryujinx.Common.Memory.PartialUnmaps;
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using System;
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using System.Runtime.InteropServices;
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using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
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namespace ARMeilleure.Signal
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@ -10,8 +10,28 @@ namespace ARMeilleure.Signal
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/// <summary>
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/// Methods to handle signals caused by partial unmaps. See the structs for C# implementations of the methods.
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/// </summary>
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internal static class WindowsPartialUnmapHandler
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internal static partial class WindowsPartialUnmapHandler
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{
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[LibraryImport("kernel32.dll", SetLastError = true, EntryPoint = "LoadLibraryA")]
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private static partial IntPtr LoadLibrary([MarshalAs(UnmanagedType.LPStr)] string lpFileName);
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[LibraryImport("kernel32.dll", SetLastError = true)]
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private static partial IntPtr GetProcAddress(IntPtr hModule, [MarshalAs(UnmanagedType.LPStr)] string procName);
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private static IntPtr _getCurrentThreadIdPtr;
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public static IntPtr GetCurrentThreadIdFunc()
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{
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if (_getCurrentThreadIdPtr == IntPtr.Zero)
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{
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IntPtr handle = LoadLibrary("kernel32.dll");
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_getCurrentThreadIdPtr = GetProcAddress(handle, "GetCurrentThreadId");
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}
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return _getCurrentThreadIdPtr;
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}
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public static Operand EmitRetryFromAccessViolation(EmitterContext context)
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{
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IntPtr partialRemapStatePtr = PartialUnmapState.GlobalState;
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@ -20,7 +40,7 @@ namespace ARMeilleure.Signal
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// Get the lock first.
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EmitNativeReaderLockAcquire(context, IntPtr.Add(partialRemapStatePtr, PartialUnmapState.PartialUnmapLockOffset));
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IntPtr getCurrentThreadId = WindowsSignalHandlerRegistration.GetCurrentThreadIdFunc();
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IntPtr getCurrentThreadId = GetCurrentThreadIdFunc();
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Operand threadId = context.Call(Const((ulong)getCurrentThreadId), OperandType.I32);
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Operand threadIndex = EmitThreadLocalMapIntGetOrReserve(context, localCountsPtr, threadId, Const(0));
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@ -137,17 +157,6 @@ namespace ARMeilleure.Signal
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return context.Add(structsPtr, context.SignExtend32(OperandType.I64, offset));
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}
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#pragma warning disable IDE0051 // Remove unused private member
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private static void EmitThreadLocalMapIntRelease(EmitterContext context, IntPtr threadLocalMapPtr, Operand threadId, Operand index)
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{
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Operand offset = context.Multiply(index, Const(sizeof(int)));
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Operand idsPtr = Const((ulong)IntPtr.Add(threadLocalMapPtr, ThreadLocalMap<int>.ThreadIdsOffset));
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Operand idPtr = context.Add(idsPtr, context.SignExtend32(OperandType.I64, offset));
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context.CompareAndSwap(idPtr, threadId, Const(0));
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}
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#pragma warning restore IDE0051
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private static void EmitAtomicAddI32(EmitterContext context, Operand ptr, Operand additive)
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{
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Operand loop = Label();
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@ -1,44 +0,0 @@
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using System;
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using System.Runtime.InteropServices;
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namespace ARMeilleure.Signal
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{
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unsafe partial class WindowsSignalHandlerRegistration
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{
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[LibraryImport("kernel32.dll")]
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private static partial IntPtr AddVectoredExceptionHandler(uint first, IntPtr handler);
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[LibraryImport("kernel32.dll")]
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private static partial ulong RemoveVectoredExceptionHandler(IntPtr handle);
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[LibraryImport("kernel32.dll", SetLastError = true, EntryPoint = "LoadLibraryA")]
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private static partial IntPtr LoadLibrary([MarshalAs(UnmanagedType.LPStr)] string lpFileName);
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[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;
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue