x86 architecture map 4 opcodes pre- fix EVEX MAP4 xxh   x0h   x1h x2h x3h x4h x5h x6h x7h   n/a     0xh     {NF} ADD {ND} Bb,Eb,Gb   {NF} ADD {ND} Bv,Ev,Gv   {NF} ADD {ND} Bb,Gb,Eb   {NF} ADD {ND} Bv,Gv,Ev   66h     n/a     1xh     ADC {ND} Bb,Eb,Gb   ADC {ND} Bv,Ev,Gv   ADC {ND} Bb,Gb,Eb   ADC {ND} Bv,Gv,Ev   66h     n/a     2xh     {NF} AND {ND} Bb,Eb,Gb   {NF} AND {ND} Bv,Ev,Gv   {NF} AND {ND} Bb,Gb,Eb   {NF} AND {ND} Bv,Gv,Ev (cf. 0Fh,A4h)  {NF} SHLD {ND} Bv,Ev,Gv,Ib   66h     n/a     3xh     {NF} XOR {ND} Bb,Eb,Gb   {NF} XOR {ND} Bv,Ev,Gv   {NF} XOR {ND} Bb,Gb,Eb   {NF} XOR {ND} Bv,Gv,Ev   66h       n/a       4xh     {NF0}      CMOVO   {ND1} Bv,Gv,Ev           (cf. 0Fh,40h)     {NF0} CFCMOVO   {ND0}      Gv,Ev     {NF1} CFCMOVO   {ND1} Bv,Ev,Gv     {NF1} CFCMOVO   {ND0}      Ev,Gv   {NF0}      CMOVNO   {ND1} Bv,Gv,Ev           (cf. 0Fh,41h)     {NF0} CFCMOVNO   {ND0}      Gv,Ev     {NF1} CFCMOVNO   {ND1} Bv,Ev,Gv     {NF1} CFCMOVNO   {ND0}      Ev,Gv   {NF0}      CMOVB   {ND1} Bv,Gv,Ev           (cf. 0Fh,42h)     {NF0} CFCMOVB   {ND0}      Gv,Ev     {NF1} CFCMOVB   {ND1} Bv,Ev,Gv     {NF1} CFCMOVB   {ND0}      Ev,Gv   {NF0}      CMOVNB   {ND1} Bv,Gv,Ev           (cf. 0Fh,43h)     {NF0} CFCMOVNB   {ND0}      Gv,Ev     {NF1} CFCMOVNB   {ND1} Bv,Ev,Gv     {NF1} CFCMOVNB   {ND0}      Ev,Gv   {NF0}      CMOVZ   {ND1} Bv,Gv,Ev           (cf. 0Fh,44h)     {NF0} CFCMOVZ   {ND0}      Gv,Ev     {NF1} CFCMOVZ   {ND1} Bv,Ev,Gv     {NF1} CFCMOVZ   {ND0}      Ev,Gv   {NF0}      CMOVNZ   {ND1} Bv,Gv,Ev           (cf. 0Fh,45h)     {NF0} CFCMOVNZ   {ND0}      Gv,Ev     {NF1} CFCMOVNZ   {ND1} Bv,Ev,Gv     {NF1} CFCMOVNZ   {ND0}      Ev,Gv   {NF0}      CMOVBE   {ND1} Bv,Gv,Ev           (cf. 0Fh,46h)     {NF0} CFCMOVBE   {ND0}      Gv,Ev     {NF1} CFCMOVBE   {ND1} Bv,Ev,Gv     {NF1} CFCMOVBE   {ND0}      Ev,Gv   {NF0}      CMOVNBE   {ND1} Bv,Gv,Ev           (cf. 0Fh,47h)     {NF0} CFCMOVNBE   {ND0}      Gv,Ev     {NF1} CFCMOVNBE   {ND1} Bv,Ev,Gv     {NF1} CFCMOVNBE   {ND0}      Ev,Gv     66h       F3h     F2h         SETO#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,90h)       SETNO#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,91h)       SETB#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,92h)       SETNB#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,93h)       SETZ#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,94h)       SETNZ#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,95h)       SETBE#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,96h)       SETNBE#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,97h)   n/a     5xh     n/a     6xh   (cf. 0Fh,38h,F0h) MOVBE Gv,Ev (MOVBE,APX) (cf. 0Fh,38h,F1h) MOVBE Ev,Gv (MOVBE,APX) WRSSD Md,Gd (CET,APX) WRSSQ Mq,Gq (CET,APX)   66h   WRUSSD Md,Gd (CET,APX) WRUSSQ Mq,Gq (CET,APX) ADCX {ND} By,Gy,Ey (ADX,APX)   F3h   ADOX {ND} By,Gy,Ey (ADX,APX)   F2h     n/a     7xh     n/a     8xh     group #1 Eb,Ib   group #1 Ev,Iz (no 80h alias)   group #1 Ev,Ib   CTESTscc Eb,Gb,dfv   CTESTscc Ev,Gv,dfv   66h     n/a     9xh     n/a     Axh   (cf. 0Fh,A5h)  {NF} SHLD {ND} Bv,Ev,Gv,CL   66h     n/a     Bxh     n/a     Cxh     group #2 Eb,Ib   group #2 Ev,Ib   66h     n/a     Dxh     group #2 Eb,1   group #2 Ev,1   group #2 Eb,CL   group #2 Ev,CL   66h     n/a     Exh     n/a     Fxh   (cf. F2h,0Fh,38h,F0h) CRC32 Gy,Eb (SSE4.2*,APX) (cf. F2h,0Fh,38h,F1h) CRC32 Gy,Ev (SSE4.2*,APX) (cf. F3h,0Fh,BCh) {NF} TZCNT Gv,Ev (BMI1,APX) (cf. F3h,0Fh,BDh) {NF} LZCNT Gv,Ev (LZCNT,APX)   group #3 Eb   group #3 Ev   66h     F3h   INVEPT Gy,Mo (VMX+,APX)   (cf. 66h,0Fh,38h,80h) INVVPID Gy,Mo (VMX+,APX)   (cf. 66h,0Fh,38h,81h) INVPCID Gy,Mo (INVP...,APX)   (cf. 66h,0Fh,38h,82h)   F2h   pre- fix EVEX MAP4 xxh   x8h   x9h xAh xBh xCh xDh xEh xFh   n/a     0xh     {NF} OR {ND} Bb,Eb,Gb   {NF} OR {ND} Bv,Ev,Gv   {NF} OR {ND} Bb,Gb,Eb   {NF} OR {ND} Bv,Gv,Ev   66h     n/a     1xh     SBB {ND} Bb,Eb,Gb   SBB {ND} Bv,Ev,Gv   SBB {ND} Bb,Gb,Eb   SBB {ND} Bv,Gv,Ev   66h     n/a     2xh     {NF} SUB {ND} Bb,Eb,Gb   {NF} SUB {ND} Bv,Ev,Gv   {NF} SUB {ND} Bb,Gb,Eb   {NF} SUB {ND} Bv,Gv,Ev (cf. 0Fh,ACh)  {NF} SHRD {ND} Bv,Ev,Gv,Ib   66h     n/a     3xh     CCMPscc Eb,Gb,dfv   CCMPscc Ev,Gv,dfv   CCMPscc Gb,Eb,dfv   CCMPscc Gv,Ev,dfv   66h       n/a       4xh     {NF0}      CMOVS   {ND1} Bv,Gv,Ev           (cf. 0Fh,48h)     {NF0} CFCMOVS   {ND0}      Gv,Ev     {NF1} CFCMOVS   {ND1} Bv,Ev,Gv     {NF1} CFCMOVS   {ND0}      Ev,Gv   {NF0}      CMOVNS   {ND1} Bv,Gv,Ev           (cf. 0Fh,49h)     {NF0} CFCMOVNS   {ND0}      Gv,Ev     {NF1} CFCMOVNS   {ND1} Bv,Ev,Gv     {NF1} CFCMOVNS   {ND0}      Ev,Gv   {NF0}      CMOVP   {ND1} Bv,Gv,Ev           (cf. 0Fh,4Ah)     {NF0} CFCMOVP   {ND0}      Gv,Ev     {NF1} CFCMOVP   {ND1} Bv,Ev,Gv     {NF1} CFCMOVP   {ND0}      Ev,Gv   {NF0}      CMOVNP   {ND1} Bv,Gv,Ev           (cf. 0Fh,4Bh)     {NF0} CFCMOVNP   {ND0}      Gv,Ev     {NF1} CFCMOVNP   {ND1} Bv,Ev,Gv     {NF1} CFCMOVNP   {ND0}      Ev,Gv   {NF0}      CMOVL   {ND1} Bv,Gv,Ev           (cf. 0Fh,4Ch)     {NF0} CFCMOVL   {ND0}      Gv,Ev     {NF1} CFCMOVL   {ND1} Bv,Ev,Gv     {NF1} CFCMOVL   {ND0}      Ev,Gv   {NF0}      CMOVNL   {ND1} Bv,Gv,Ev           (cf. 0Fh,4Dh)     {NF0} CFCMOVNL   {ND0}      Gv,Ev     {NF1} CFCMOVNL   {ND1} Bv,Ev,Gv     {NF1} CFCMOVNL   {ND0}      Ev,Gv   {NF0}      CMOVLE   {ND1} Bv,Gv,Ev           (cf. 0Fh,4Eh)     {NF0} CFCMOVLE   {ND0}      Gv,Ev     {NF1} CFCMOVLE   {ND1} Bv,Ev,Gv     {NF1} CFCMOVLE   {ND0}      Ev,Gv   {NF0}      CMOVNLE   {ND1} Bv,Gv,Ev           (cf. 0Fh,4Fh)     {NF0} CFCMOVNLE   {ND0}      Gv,Ev     {NF1} CFCMOVNLE   {ND1} Bv,Ev,Gv     {NF1} CFCMOVNLE   {ND0}      Ev,Gv     66h       F3h     F2h         SETS#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,98h)       SETNS#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,99h)       SETP#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,9Ah)       SETNP#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,9Bh)       SETL#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,9Ch)       SETNL#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,9Dh)       SETLE#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,9Eh)       SETNLE#reg {ZU0} Eb       {ZU1} Mb/Rq  (cf. 0Fh,9Fh)   n/a     5xh     n/a     6xh     {NF} IMUL {ZU0} Gv,Ev,Iz  {ZU1} Gq,Ev,Iz   {NF} IMUL {ZU0} Gv,Ev,Ib  {ZU1} Gq,Ev,Iz   66h     F3h     F2h     n/a     7xh     n/a     8xh   (cf. F3h,0Fh,B8h) {NF} POPCNT Gv,Ev (POPCNT,APX) group #1A   66h     n/a     9xh     n/a     Axh   (cf. 0Fh,ADh)  {NF} SHRD {ND} Bv,Ev,Gv,CL (cf. 0Fh,AFh)  {NF} IMUL {ND} Bv,Gv,Ev   66h     n/a     Bxh     n/a     Cxh     66h     n/a     Dxh     66h     n/a     Exh     n/a     Fxh   MOVDIRI My,Gy (M...DIRI,APX)   (cf. 0Fh,38h,F9h) AADD My,Gy (RAO...,APX)   (cf. 0Fh,38h,FCh)   group #4 INC/DEC   group #5 INC/DEC/etc.   66h   MOVDIR64B (ES:) Gy,Mz (M...64B,APX)   (cf. 66h,0Fh,38h,F8h) AAND My,Gy (RAO...,APX)   (cf. 66h,0Fh,38h,FCh)   F3h   ENQCMDS (ES:) Gy,Mz (ENQ...,APX) UWRMSR Gq,Rq (W=0) (US...,APX) AXOR My,Gy (RAO...,APX)   (cf. F3h,0Fh,38h,FCh)   F2h   ENQCMD (ES:) Gy,Mz (ENQ...,APX) URDMSR Rq,Gq (W=0) (US...,APX) AOR My,Gy (RAO...,APX)   (cf. F2h,0Fh,38h,FCh) note: The opcodes marked with * are aliases to other opcodes. © 1996-2024 by Christian Ludloff. All rights reserved. Use at your own risk.