diff options
Diffstat (limited to 'lib/Target/X86/Disassembler/X86DisassemblerDecoder.c')
| -rw-r--r-- | lib/Target/X86/Disassembler/X86DisassemblerDecoder.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c index 06300a6868..de1610ba3d 100644 --- a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c +++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c @@ -75,6 +75,12 @@ static int modRMRequired(OpcodeType type, case THREEBYTE_3A: decision = &THREEBYTE3A_SYM; break; + case THREEBYTE_A6: + decision = &THREEBYTEA6_SYM; + break; + case THREEBYTE_A7: + decision = &THREEBYTEA7_SYM; + break; } return decision->opcodeDecisions[insnContext].modRMDecisions[opcode]. @@ -115,6 +121,12 @@ static InstrUID decode(OpcodeType type, case THREEBYTE_3A: dec = &THREEBYTE3A_SYM.opcodeDecisions[insnContext].modRMDecisions[opcode]; break; + case THREEBYTE_A6: + dec = &THREEBYTEA6_SYM.opcodeDecisions[insnContext].modRMDecisions[opcode]; + break; + case THREEBYTE_A7: + dec = &THREEBYTEA7_SYM.opcodeDecisions[insnContext].modRMDecisions[opcode]; + break; } switch (dec->modrm_type) { @@ -580,6 +592,24 @@ static int readOpcode(struct InternalInstruction* insn) { return -1; insn->opcodeType = THREEBYTE_3A; + } else if (current == 0xa6) { + dbgprintf(insn, "Found a three-byte escape prefix (0x%hhx)", current); + + insn->threeByteEscape = current; + + if (consumeByte(insn, ¤t)) + return -1; + + insn->opcodeType = THREEBYTE_A6; + } else if (current == 0xa7) { + dbgprintf(insn, "Found a three-byte escape prefix (0x%hhx)", current); + + insn->threeByteEscape = current; + + if (consumeByte(insn, ¤t)) + return -1; + + insn->opcodeType = THREEBYTE_A7; } else { dbgprintf(insn, "Didn't find a three-byte escape prefix"); |