BackPatch: make sure MOVBE is long enough

2014-04-24 11:15:52 +02:00 · 2014-04-24 11:15:52 +02:00 · 1f2e551c8c
parent acfd9ee76c
commit 1f2e551c8c
1 changed files with 6 additions and 0 deletions
--- a/Source/Core/Core/PowerPC/JitCommon/JitBackpatch.cpp
+++ b/Source/Core/Core/PowerPC/JitCommon/JitBackpatch.cpp
@ -187,6 +187,12 @@ const u8 *Jitx86Base::BackPatch(u8 *codePtr, u32 emAddress, void *ctx_void)
 		return nullptr;
 	}

+	if (info.byteSwap && info.instructionSize < 5)
+	{
+		PanicAlert("BackPatch: MOVBE is too small");
+		return nullptr;
+	}
+
 	auto it = registersInUseAtLoc.find(codePtr);
 	if (it == registersInUseAtLoc.end())
 	{