arch/x86/decoder.cc

94         uint8_t nextByte = getNextByte();
97             state = doPrefixState(nextByte);
100             state = doVex2Of2State(nextByte);
103             state = doVex2Of3State(nextByte);
106             state = doVex3Of3State(nextByte);
109             state = doVexOpcodeState(nextByte);
112             state = doOneByteOpcodeState(nextByte);
115             state = doTwoByteOpcodeState(nextByte);
118             state = doThreeByte0F38OpcodeState(nextByte);
121             state = doThreeByte0F3AOpcodeState(nextByte);
124             state = doModRMState(nextByte);
127             state = doSIBState(nextByte);
178 Decoder::doPrefixState(uint8_t nextByte)
180     uint8_t prefix = Prefixes[nextByte];
221         DPRINTF(Decoder, "Found Rex prefix %#x.\n", nextByte);
222         emi.rex = nextByte;
225         DPRINTF(Decoder, "Found VEX two-byte prefix %#x.\n", nextByte);
230         DPRINTF(Decoder, "Found VEX three-byte prefix %#x.\n", nextByte);
239         panic("Unrecognized prefix %#x\n", nextByte);
245 Decoder::doVex2Of2State(uint8_t nextByte)
248     Vex2Of2 vex = nextByte;
275 Decoder::doVex2Of3State(uint8_t nextByte)
277     if (emi.mode.submode != SixtyFourBitMode && bits(nextByte, 7, 6) == 0x3) {
283                              nextByte >= 0xA0 && nextByte <= 0xA3);
287     Vex2Of3 vex = nextByte;
316 Decoder::doVex3Of3State(uint8_t nextByte)
318     if (emi.mode.submode != SixtyFourBitMode && bits(nextByte, 7, 6) == 0x3) {
324                              nextByte >= 0xA0 && nextByte <= 0xA3);
328     Vex3Of3 vex = nextByte;
353 Decoder::doVexOpcodeState(uint8_t nextByte)
355     DPRINTF(Decoder, "Found VEX opcode %#x.\n", nextByte);
357     emi.opcode.op = nextByte;
377 Decoder::doOneByteOpcodeState(uint8_t nextByte)
382     if (nextByte == 0x0f) {
383         DPRINTF(Decoder, "Found opcode escape byte %#x.\n", nextByte);
386         DPRINTF(Decoder, "Found one byte opcode %#x.\n", nextByte);
388         emi.opcode.op = nextByte;
391                                   nextByte >= 0xA0 && nextByte <= 0xA3);
399 Decoder::doTwoByteOpcodeState(uint8_t nextByte)
403     if (nextByte == 0x38) {
405         DPRINTF(Decoder, "Found opcode escape byte %#x.\n", nextByte);
406     } else if (nextByte == 0x3a) {
408         DPRINTF(Decoder, "Found opcode escape byte %#x.\n", nextByte);
410         DPRINTF(Decoder, "Found two byte opcode %#x.\n", nextByte);
412         emi.opcode.op = nextByte;
422 Decoder::doThreeByte0F38OpcodeState(uint8_t nextByte)
426     DPRINTF(Decoder, "Found three byte 0F38 opcode %#x.\n", nextByte);
428     emi.opcode.op = nextByte;
436 Decoder::doThreeByte0F3AOpcodeState(uint8_t nextByte)
440     DPRINTF(Decoder, "Found three byte 0F3A opcode %#x.\n", nextByte);
442     emi.opcode.op = nextByte;
510 Decoder::doModRMState(uint8_t nextByte)
513     ModRM modRM = nextByte;
514     DPRINTF(Decoder, "Found modrm byte %#x.\n", nextByte);
565 Decoder::doSIBState(uint8_t nextByte)
568     emi.sib = nextByte;
569     DPRINTF(Decoder, "Found SIB byte %#x.\n", nextByte);