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add android bionic nce support

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This commit is contained in:
Emmanuel Hansen 2023-07-04 09:20:14 +00:00
parent 44551a0409
commit 9c510fec3e
4 changed files with 120 additions and 21 deletions
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87
src/Ryujinx.Cpu/Signal/AndroidSignalHandlerRegistration.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace Ryujinx.Cpu.Signal
{
static class AndroidSignalHandlerRegistration
{
[StructLayout(LayoutKind.Sequential, Pack = 8)]
public unsafe struct SigSet
{
fixed long sa_mask[16];
}
[StructLayout(LayoutKind.Sequential, Pack = 8)]
public struct SigAction
{
public int sa_flags;
public IntPtr sa_handler;
public SigSet sa_mask;
public IntPtr sa_restorer;
}
private const int SIGSEGV = 11;
private const int SA_SIGINFO = 0x00000004;
[DllImport("libc", SetLastError = true)]
private static extern int sigaction(int signum, ref SigAction sigAction, out SigAction oldAction);
[DllImport("libc", SetLastError = true)]
private static extern int sigaction(int signum, IntPtr sigAction, out SigAction oldAction);
[DllImport("libc", SetLastError = true)]
private static extern int sigemptyset(ref SigSet set);
public static SigAction GetSegfaultExceptionHandler()
{
int result = sigaction(SIGSEGV, IntPtr.Zero, out SigAction old);
if (result != 0)
{
throw new InvalidOperationException($"Could not get SIGSEGV sigaction. Error: {result}");
}
return old;
}
public static SigAction RegisterExceptionHandler(IntPtr action, int userSignal = -1)
{
SigAction sig = new SigAction
{
sa_handler = action,
sa_flags = SA_SIGINFO
};
sigemptyset(ref sig.sa_mask);
int result = sigaction(SIGSEGV, ref sig, out SigAction old);
if (result != 0)
{
throw new InvalidOperationException($"Could not register SIGSEGV sigaction. Error: {result}");
}
if (userSignal != -1)
{
result = sigaction(userSignal, ref sig, out SigAction oldu);
if (oldu.sa_handler != IntPtr.Zero)
{
throw new InvalidOperationException($"SIG{userSignal} is already in use.");
}
if (result != 0)
{
throw new InvalidOperationException($"Could not register SIG{userSignal} sigaction. Error: {result}");
}
}
return old;
}
public static bool RestoreExceptionHandler(SigAction oldAction)
{
return sigaction(SIGSEGV, ref oldAction, out SigAction _) == 0;
}
}
}