Be pedantic about stack overflow on Linux and OS X.

Add some magic to the fault handler to handle stack overflow due to BLR
optimization, and disable the optimization if fastmem is not enabled.

1 files changed, 19 insertions, 0 deletions

diff --git a/Source/Core/Common/MemoryUtil.cpp b/Source/Core/Common/MemoryUtil.cpp
index f7e1d7d902..a741deef4f 100644
--- a/Source/Core/Common/MemoryUtil.cpp
+++ b/Source/Core/Common/MemoryUtil.cpp
@@ -158,6 +158,25 @@ void FreeAlignedMemory(void* ptr)
 	}
 }
 
+void ReadProtectMemory(void* ptr, size_t size)
+{
+	bool error_occurred = false;
+
+#ifdef _WIN32
+	DWORD oldValue;
+	if (!VirtualProtect(ptr, size, PAGE_NOACCESS, &oldValue))
+		error_occurred = true;
+#else
+	int retval = mprotect(ptr, size, PROT_NONE);
+
+	if (retval != 0)
+		error_occurred = true;
+#endif
+
+	if (error_occurred)
+		PanicAlert("ReadProtectMemory failed!\n%s", GetLastErrorMsg());
+}
+
 void WriteProtectMemory(void* ptr, size_t size, bool allowExecute)
 {
 	bool error_occurred = false;