static UInt32 post_proc_cmpxchg8b(long origin_offset, long offset, ref INSTRUCTION instr, INTERNAL_DATA idata, DISMODE mode) { if ((idata.prefixes[PREF_REX_INDEX] != 0xFF) && ((instr.rex & PREFIX_REX_W)!=0)) { idata.is_rex_used = 1; instr.mnemonic = "cmpxchg16b"; instr.ops[0].size = (ushort)OP_SIZE.OPERAND_SIZE_128; } return 0; }