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https://github.com/Ryujinx/Ryujinx.git
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* Implement JIT Arm64 backend * PPTC version bump * Address some feedback from Arm64 JIT PR * Address even more PR feedback * Remove unused IsPageAligned function * Sync Qc flag before calls * Fix comment and remove unused enum * Address riperiperi PR feedback * Delete Breakpoint IR instruction that was only implemented for Arm64
84 lines
2.5 KiB
C#
84 lines
2.5 KiB
C#
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($"Could not get SIGSEGV sigaction. Error: {result}");
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}
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return old;
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}
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public static SigAction RegisterExceptionHandler(IntPtr action)
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{
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SigAction sig = new SigAction
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{
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sa_handler = action,
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sa_flags = SA_SIGINFO
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};
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sigemptyset(ref sig.sa_mask);
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int result = sigaction(SIGSEGV, ref sig, out SigAction old);
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if (result != 0)
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{
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throw new InvalidOperationException($"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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