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Diffstat (limited to 'lib/Target/X86/Disassembler/X86DisassemblerDecoder.c')
-rw-r--r--lib/Target/X86/Disassembler/X86DisassemblerDecoder.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
index db694bc2f3c5..64f6b2dc7e8b 100644
--- a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
+++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
@@ -1277,6 +1277,9 @@ static int readOperands(struct InternalInstruction* insn) {
case ENCODING_IB:
if (readImmediate(insn, 1))
return -1;
+ if (insn->spec->operands[index].type == TYPE_IMM3 &&
+ insn->immediates[insn->numImmediatesConsumed - 1] > 7)
+ return -1;
break;
case ENCODING_IW:
if (readImmediate(insn, 2))
@@ -1293,6 +1296,7 @@ static int readOperands(struct InternalInstruction* insn) {
case ENCODING_Iv:
if (readImmediate(insn, insn->immediateSize))
return -1;
+ break;
case ENCODING_Ia:
if (readImmediate(insn, insn->addressSize))
return -1;