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fix(hle): enable GuestImageWriteTracker CPU sync on Windows (#550)

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Windows previously hard-disabled the tracker, so CPU-written guest
planes never marked dirty and host textures stayed empty. Arm pages
with VirtualProtect, handle write AVs in VEH, and warm/test on
VirtualAlloc memory so protect cannot poison the CRT heap.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
MarcelMediaDev
2026-07-23 13:37:05 +01:00
committed by GitHub
parent 007bf6fa73
commit 82ab181861
4 changed files with 135 additions and 18 deletions
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src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.Exceptions.cs
+8
View File
@@ -55,6 +55,7 @@ public sealed partial class DirectExecutionBackend
}
_exceptionHandler = (nint)AddVectoredExceptionHandler(1u, _exceptionHandlerStub);
Console.Error.WriteLine($"[LOADER][INFO] Exception handler installed: 0x{_exceptionHandler:X16}");
SharpEmu.HLE.GuestImageWriteTracker.WarmUp();
_unhandledFilterDelegate = UnhandledExceptionFilter;
_unhandledFilterHandle = GCHandle.Alloc(_unhandledFilterDelegate);
@@ -117,6 +118,13 @@ public sealed partial class DirectExecutionBackend
{
return -1;
}
if (exceptionCode == 3221225477u &&
exceptionRecord->NumberParameters >= 2 &&
SharpEmu.HLE.GuestImageWriteTracker.TryHandleWriteFault(
exceptionRecord->ExceptionInformation[1]))
{
return -1;
}
if (TryRecoverAuxiliaryThreadExecuteFault(exceptionRecord, contextRecord, rip))
{
return -1;
src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.Imports.cs
+9
View File
@@ -69,6 +69,15 @@ public sealed partial class DirectExecutionBackend
private unsafe static int RawVectoredHandlerManaged(void* exceptionInfo)
{
EXCEPTION_RECORD* exceptionRecord = ((EXCEPTION_POINTERS*)exceptionInfo)->ExceptionRecord;
if (exceptionRecord->ExceptionCode == 3221225477u &&
exceptionRecord->NumberParameters >= 2 &&
SharpEmu.HLE.GuestImageWriteTracker.TryHandleWriteFault(
exceptionRecord->ExceptionInformation[1]))
{
return -1;
}
return TryRecoverUnresolvedSentinel(exceptionInfo);
}