Merge pull request #420 from magumagu/backpatch-s8

JIT: make backpatch handle sign-extend from 8 bits correctly.
dolphin-emu · May 29, 2014 · 3b23f4b · 3b23f4b
2 parents 329fcad + 2599cd5
commit 3b23f4b
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/Source/Core/Core/PowerPC/JitCommon/JitBackpatch.cpp b/Source/Core/Core/PowerPC/JitCommon/JitBackpatch.cpp
@@ -86,7 +86,12 @@ const u8 *TrampolineCache::GetReadTrampoline(const InstructionInfo &info, u32 re
 		break;
 	}
 
-	if (dataReg != EAX)
+	if (info.signExtend && info.operandSize == 1)
+	{
+		// Need to sign extend value from Read_U8.
+		MOVSX(32, 8, dataReg, R(EAX));
+	}
+	else if (dataReg != EAX)
 	{
 		MOV(32, R(dataReg), R(EAX));
 	}