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bunch of stuff don't push this monstrosity anywhere

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actual stuff don't push this monstrosity anywhere
This commit is contained in:
riperiperi 2023-11-02 19:04:36 +00:00
parent 24772d6e70
commit a26ada036c
31 changed files with 513 additions and 77 deletions
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32
src/ARMeilleure/Native/JitSupportDarwin.cs
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@ -5,9 +5,41 @@ using System.Runtime.Versioning;
namespace ARMeilleure.Native
{
[SupportedOSPlatform("macos")]
[SupportedOSPlatform("ios")]
internal static partial class JitSupportDarwin
{
[LibraryImport("libarmeilleure-jitsupport", EntryPoint = "armeilleure_jit_memcpy")]
public static partial void Copy(IntPtr dst, IntPtr src, ulong n);
}
[SupportedOSPlatform("ios")]
internal static partial class JitSupportDarwinAot
{
[LibraryImport("pthread", EntryPoint = "pthread_jit_write_protect_np")]
private static partial void pthread_jit_write_protect_np(int enabled);
[LibraryImport("libc", EntryPoint = "sys_icache_invalidate")]
private static partial void sys_icache_invalidate(IntPtr start, IntPtr length);
public static unsafe void Copy(IntPtr dst, IntPtr src, ulong n) {
// When NativeAOT is in use, we can toggle per-thread write protection without worrying about breaking .NET code.
//pthread_jit_write_protect_np(0);
var srcSpan = new Span<byte>(src.ToPointer(), (int)n);
var dstSpan = new Span<byte>(dst.ToPointer(), (int)n);
srcSpan.CopyTo(dstSpan);
//pthread_jit_write_protect_np(1);
// Ensure that the instruction cache for this range is invalidated.
sys_icache_invalidate(dst, (IntPtr)n);
}
public static unsafe void Invalidate(IntPtr dst, ulong n)
{
// Ensure that the instruction cache for this range is invalidated.
sys_icache_invalidate(dst, (IntPtr)n);
}
}
}