Merge pull request #5943 from cjacek/wow64-chpe

WOW64: Use CHPEv2 for suspend and exception support

FEXCore/Source/Interface/Core/Core.cpp

@@ -358,11 +358,6 @@ bool ContextImpl::InitCore() {
   // Set up the SignalDelegator config since core is initialized.
   SignalDelegation->SetConfig(Dispatcher->MakeSignalDelegatorConfig());
 
-#if defined(_WIN32) && !defined(ARCHITECTURE_arm64ec)
-  // WOW64 always needs the interrupt fault check to be enabled.
-  Config.NeedsPendingInterruptFaultCheck = true;
-#endif
-
   if (Config.GdbServer) {
     // If gdbserver is enabled then this needs to be enabled.
     Config.NeedsPendingInterruptFaultCheck = true;

FEXCore/Source/Interface/Core/JIT/JIT.cpp

@@ -766,7 +766,7 @@ void Arm64JITCore::EmitTFCheck() {
 void Arm64JITCore::EmitSuspendInterruptCheck() {
   if (CTX->Config.NeedsPendingInterruptFaultCheck) {
     // Trigger a fault if there are any pending interrupts
-    // Used only for suspend on WIN32 at the moment
+    // Used only for gdbserver at the moment
     constexpr size_t InterruptPageOffset =
       offsetof(FEXCore::Core::InternalThreadState, InterruptFaultPage) - offsetof(FEXCore::Core::InternalThreadState, BaseFrameState);
     if constexpr (InterruptPageOffset <= 32760) {
@@ -778,7 +778,7 @@ void Arm64JITCore::EmitSuspendInterruptCheck() {
     }
   }
 
-#ifdef ARCHITECTURE_arm64ec
+#ifdef _WIN32
   static constexpr uint16_t SuspendMagic {0xCAFE};
 
   ldr(TMP2.W(), STATE_PTR(CpuStateFrame, SuspendDoorbell));