arch/x86/decoder.cc

54     emi.opcode.type = BadOpcode;
55     emi.opcode.op = 0;
176 //state machine on to get the opcode(s).
269     emi.opcode.type = TwoByteOpcode;
280         emi.opcode.type = OneByteOpcode;
281         emi.opcode.op = 0xC4;
295         emi.opcode.type = TwoByteOpcode;
298         emi.opcode.type = ThreeByte0F38Opcode;
301         emi.opcode.type = ThreeByte0F3AOpcode;
307         emi.opcode.type = TwoByteOpcode;
308         emi.opcode.op = 0x0B;
321         emi.opcode.type = OneByteOpcode;
322         emi.opcode.op = 0xC5;
355     DPRINTF(Decoder, "Found VEX opcode %#x.\n", nextByte);
357     emi.opcode.op = nextByte;
360     switch (emi.opcode.type) {
370         panic("Unrecognized opcode type %d.\n", emi.opcode.type);
374 // Load the first opcode byte. Determine if there are more opcode bytes, and
383         DPRINTF(Decoder, "Found opcode escape byte %#x.\n", nextByte);
386         DPRINTF(Decoder, "Found one byte opcode %#x.\n", nextByte);
387         emi.opcode.type = OneByteOpcode;
388         emi.opcode.op = nextByte;
396 // Load the second opcode byte. Determine if there are more opcode bytes, and
405         DPRINTF(Decoder, "Found opcode escape byte %#x.\n", nextByte);
408         DPRINTF(Decoder, "Found opcode escape byte %#x.\n", nextByte);
410         DPRINTF(Decoder, "Found two byte opcode %#x.\n", nextByte);
411         emi.opcode.type = TwoByteOpcode;
412         emi.opcode.op = nextByte;
419 // Load the third opcode byte and determine what immediate and/or ModRM is
426     DPRINTF(Decoder, "Found three byte 0F38 opcode %#x.\n", nextByte);
427     emi.opcode.type = ThreeByte0F38Opcode;
428     emi.opcode.op = nextByte;
433 // Load the third opcode byte and determine what immediate and/or ModRM is
440     DPRINTF(Decoder, "Found three byte 0F3A opcode %#x.\n", nextByte);
441     emi.opcode.type = ThreeByte0F3AOpcode;
442     emi.opcode.op = nextByte;
447 // Generic opcode processing which determines the immediate size, and whether
454     const uint8_t opcode = emi.opcode.op;
485     //on the opcode.
486     int immType = immTable[opcode];
493     if (modrmTable[opcode]) {
534     // the other instructions with the same actual opcode don't.
535     if (emi.opcode.type == OneByteOpcode && (modRM.reg & 0x6) == 0) {
536        if (emi.opcode.op == 0xF6)
538        else if (emi.opcode.op == 0xF7)