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https://git.743378673.xyz/MeloNX/MeloNX.git
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Merge Latest Ryujinx (Unstable)
This commit is contained in:
Stossy11
parent
aaefc0a9e5
commit
12ab8bc3e2
1237 changed files with 48656 additions and 21399 deletions
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@ -1,427 +0,0 @@
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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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{
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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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private const int StructAddressOffset = 0;
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private const int StructWriteOffset = 4;
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private const int UnixOldSigaction = 8;
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private const int UnixOldSigaction3Arg = 16;
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private const int RangeOffset = 20;
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private const int EXCEPTION_CONTINUE_SEARCH = 0;
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private const int EXCEPTION_CONTINUE_EXECUTION = -1;
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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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{
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_handlerConfig = Marshal.AllocHGlobal(Unsafe.SizeOf<SignalHandlerConfig>());
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ref SignalHandlerConfig config = ref GetConfigRef();
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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() || OperatingSystem.IsIOS())
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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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Operand endLabel = Label();
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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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Operand nextLabel = Label();
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Operand isActive = context.Load(OperandType.I32, Const((ulong)signalStructPtr + rangeBaseOffset));
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context.BranchIfFalse(nextLabel, isActive);
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Operand rangeAddress = context.Load(OperandType.I64, Const((ulong)signalStructPtr + rangeBaseOffset + 4));
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Operand rangeEndAddress = context.Load(OperandType.I64, Const((ulong)signalStructPtr + rangeBaseOffset + 12));
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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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// 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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// 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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context.Copy(inRegionLocal, Const(0));
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Operand skipActionLabel = Label();
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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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context.Copy(inRegionLocal, result);
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context.MarkLabel(skipActionLabel);
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// If the tracking action returns false or does not exist, it might be an invalid access due to a partial overlap on Windows.
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if (OperatingSystem.IsWindows())
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{
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context.BranchIfTrue(endLabel, inRegionLocal);
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context.Copy(inRegionLocal, WindowsPartialUnmapHandler.EmitRetryFromAccessViolation(context));
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}
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context.Branch(endLabel);
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context.MarkLabel(nextLabel);
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}
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context.MarkLabel(endLabel);
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return context.Copy(inRegionLocal);
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}
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private static Operand GenerateUnixFaultAddress(EmitterContext context, Operand sigInfoPtr)
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{
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ulong structAddressOffset = (OperatingSystem.IsMacOS() || OperatingSystem.IsIOS()) ? 24ul : 16ul; // si_addr
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return context.Load(OperandType.I64, context.Add(sigInfoPtr, Const(structAddressOffset)));
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}
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private static Operand GenerateUnixWriteFlag(EmitterContext context, Operand ucontextPtr)
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{
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if (OperatingSystem.IsMacOS() || OperatingSystem.IsIOS())
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{
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const ulong McontextOffset = 48; // uc_mcontext
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Operand ctxPtr = context.Load(OperandType.I64, context.Add(ucontextPtr, Const(McontextOffset)));
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if (RuntimeInformation.ProcessArchitecture == Architecture.Arm64)
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{
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const ulong EsrOffset = 8; // __es.__esr
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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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{
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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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return context.BitwiseAnd(err, Const(2ul));
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}
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}
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else if (OperatingSystem.IsLinux())
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{
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if (RuntimeInformation.ProcessArchitecture == Architecture.Arm64)
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{
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Operand auxPtr = context.AllocateLocal(OperandType.I64);
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Operand loopLabel = Label();
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Operand successLabel = Label();
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const ulong AuxOffset = 464; // uc_mcontext.__reserved
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const uint EsrMagic = 0x45535201;
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context.Copy(auxPtr, context.Add(ucontextPtr, Const(AuxOffset)));
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context.MarkLabel(loopLabel);
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// _aarch64_ctx::magic
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Operand magic = context.Load(OperandType.I32, auxPtr);
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// _aarch64_ctx::size
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Operand size = context.Load(OperandType.I32, context.Add(auxPtr, Const(4ul)));
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context.BranchIf(successLabel, magic, Const(EsrMagic), Comparison.Equal);
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context.Copy(auxPtr, context.Add(auxPtr, context.ZeroExtend32(OperandType.I64, size)));
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context.Branch(loopLabel);
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context.MarkLabel(successLabel);
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// esr_context::esr
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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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{
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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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return context.BitwiseAnd(err, Const(2ul));
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}
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}
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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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{
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EmitterContext context = new();
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// (int sig, SigInfo* sigInfo, void* ucontext)
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Operand sigInfoPtr = context.LoadArgument(OperandType.I64, 1);
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Operand ucontextPtr = context.LoadArgument(OperandType.I64, 2);
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Operand faultAddress = GenerateUnixFaultAddress(context, sigInfoPtr);
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Operand writeFlag = GenerateUnixWriteFlag(context, ucontextPtr);
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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 endLabel = Label();
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context.BranchIfTrue(endLabel, isInRegion);
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Operand unixOldSigaction = context.Load(OperandType.I64, Const((ulong)signalStructPtr + UnixOldSigaction));
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Operand unixOldSigaction3Arg = context.Load(OperandType.I64, Const((ulong)signalStructPtr + UnixOldSigaction3Arg));
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Operand threeArgLabel = Label();
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context.BranchIfTrue(threeArgLabel, unixOldSigaction3Arg);
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context.Call(unixOldSigaction, OperandType.None, context.LoadArgument(OperandType.I32, 0));
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context.Branch(endLabel);
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context.MarkLabel(threeArgLabel);
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context.Call(unixOldSigaction,
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OperandType.None,
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context.LoadArgument(OperandType.I32, 0),
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sigInfoPtr,
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context.LoadArgument(OperandType.I64, 2)
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);
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context.MarkLabel(endLabel);
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context.Return();
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ControlFlowGraph cfg = context.GetControlFlowGraph();
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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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}
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private static VectoredExceptionHandler GenerateWindowsSignalHandler(IntPtr signalStructPtr)
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{
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EmitterContext context = new();
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// (ExceptionPointers* exceptionInfo)
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Operand exceptionInfoPtr = context.LoadArgument(OperandType.I64, 0);
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Operand exceptionRecordPtr = context.Load(OperandType.I64, exceptionInfoPtr);
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// First thing's first - this catches a number of exceptions, but we only want access violations.
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Operand validExceptionLabel = Label();
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Operand exceptionCode = context.Load(OperandType.I32, exceptionRecordPtr);
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context.BranchIf(validExceptionLabel, exceptionCode, Const(EXCEPTION_ACCESS_VIOLATION), Comparison.Equal);
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context.Return(Const(EXCEPTION_CONTINUE_SEARCH)); // Don't handle this one.
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context.MarkLabel(validExceptionLabel);
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// Next, read the address of the invalid access, and whether it is a write or not.
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Operand structAddressOffset = context.Load(OperandType.I32, Const((ulong)signalStructPtr + StructAddressOffset));
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Operand structWriteOffset = context.Load(OperandType.I32, Const((ulong)signalStructPtr + StructWriteOffset));
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Operand faultAddress = context.Load(OperandType.I64, context.Add(exceptionRecordPtr, context.ZeroExtend32(OperandType.I64, structAddressOffset)));
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Operand writeFlag = context.Load(OperandType.I64, context.Add(exceptionRecordPtr, context.ZeroExtend32(OperandType.I64, structWriteOffset)));
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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 endLabel = Label();
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// If the region check result is false, then run the next vectored exception handler.
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context.BranchIfTrue(endLabel, isInRegion);
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context.Return(Const(EXCEPTION_CONTINUE_SEARCH));
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context.MarkLabel(endLabel);
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// Otherwise, return to execution.
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context.Return(Const(EXCEPTION_CONTINUE_EXECUTION));
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// Compile and return the function.
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ControlFlowGraph cfg = context.GetControlFlowGraph();
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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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}
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}
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}
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