x86: fix instruction 66f20f59ff reported by @Maijin

hsebs · Apr 2, 2015 · 9239967 · 9239967
1 parent 6a4d277
commit 9239967
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/arch/X86/X86DisassemblerDecoder.c b/arch/X86/X86DisassemblerDecoder.c
@@ -1125,7 +1125,8 @@ static int getID(struct InternalInstruction *insn)
 		}
 	} else {
 		if (insn->mode != MODE_16BIT && isPrefixAtLocation(insn, 0x66)) {
-			attrMask |= ATTR_OPSIZE;
+			if (insn->twoByteEscape != 0x0f)
+				attrMask |= ATTR_OPSIZE;
 		} else if (isPrefixAtLocation(insn, 0x67))
 			attrMask |= ATTR_ADSIZE;