diff options
Diffstat (limited to 'lib/Target/X86/Disassembler/X86DisassemblerDecoder.c')
| -rw-r--r-- | lib/Target/X86/Disassembler/X86DisassemblerDecoder.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c index b0e66f00c7..6f7e8f2346 100644 --- a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c +++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c @@ -312,6 +312,13 @@ static int readPrefixes(struct InternalInstruction* insn) { if (consumeByte(insn, &byte)) return -1; + + // If the the first byte is a LOCK prefix break and let it be disassembled + // as a lock "instruction", by creating an <MCInst #xxxx LOCK_PREFIX>. + // FIXME there is currently no way to get the disassembler to print the + // lock prefix if it is not the first byte. + if (insn->readerCursor - 1 == insn->startLocation && byte == 0xf0) + break; switch (byte) { case 0xf0: /* LOCK */ |