opcode groups
| mod R/M |
xx000xxx | xx001xxx | xx010xxx | xx011xxx | xx100xxx | xx101xxx | xx110xxx | xx111xxx |
| group #1 (80..83h) |
ADD |
OR | ADC | SBB | AND | SUB | XOR | CMP |
| group #2 (C0..C1h) (D0..D3h) |
ROL | ROR | RCL | RCR | SHL | SHR | SAL* | SAR |
| group #3 (F6..F7h) |
TEST Ib/Iz |
TEST* Ib/Iz |
NOT |
NEG | MUL AL/rAX |
IMUL AL/rAX |
DIV AL/rAX |
IDIV AL/rAX |
| group #4 (FEh) |
INC Eb |
DEC Eb | ||||||
| group #5 (FFh) |
INC Ev |
DEC Ev | CALL Ev | CALL Mp | JMP Ev | JMP Mp | PUSH Ev | |
| group #6 (0Fh,00h) |
SLDT Mw SLDT Rv |
STR Mw STR Rv |
LLDT Mw LLDT Rv |
LTR Mw LTR Rv |
VERR Mw VERR Rv |
VERW Mw VERW Rv |
JMPE Ev (IA-64) |
|
| group #7 (0Fh,01h) |
SGDT Ms |
SIDT Ms | LGDT Ms | LIDT Ms | SMSW Mw | LMSW Mw | INVLPG M (80486+) |
|
|
VMCALL (C1h) VMLAUNCH (C2h) VMRESUME (C3h) VMXOFF (C4h) (see CPUID) |
MONITOR (C8h) MWAIT (C9h) (see CPUID) |
XGETBV (D0h) XSETBV (D1h) (see CPUID) |
VMRUN (D8h) VMMCALL (D9h) VMLOAD (DAh) VMSAVE (DBh) STGI (DCh) CLGI (DDh) SKINIT (DEh) INVLPGA (DFh) (see CPUID) |
SMSW Rv | LMSW Rv |
SWAPGS (F8h) (see CPUID) RDTSCP (F9h) (see CPUID) |
||
| group #8 (0Fh,BAh) |
BT |
BTS | BTR | BTC | ||||
| group #9 (0Fh,C7h) |
CMPXCHG Mq (see CPUID) |
VMPTRLD Mq (66h) VMCLEAR Mq (F3h) VMXON Mq (see CPUID) |
VMPTRST Mq (see CPUID) |
|||||
| group #10 (8Fh) |
POP Ev |
|||||||
| group #11 (0Fh,B9h) |
UD2 |
UD2 | UD2 | UD2 | UD2 | UD2 | UD2 | UD2 |
| group #12 (C6h) (C7h) |
MOV | |||||||
| group #13 (0Fh,71h) |
PSRLW PRq,Ib (MMX) (66h) PSRLW VRo,Ib (SSE2) |
PSRAW PRq,Ib (MMX) (66h) PSRAW VRo,Ib (SSE2) |
PSLLW PRq,Ib (MMX) (66h) PSLLW VRo,Ib (SSE2) |
|||||
| group #14 (0Fh,72h) |
PSRLD PRq,Ib (MMX) (66h) PSRLD VRo,Ib (SSE2) |
PSRAD PRq,Ib (MMX) (66h) PSRAD VRo,Ib (SSE2) |
PSLLD PRq,Ib (MMX) (66h) PSLLD VRo,Ib (SSE2) |
|||||
| group #15 (0Fh,73h) |
PSRLQ PRq,Ib (MMX) (66h) PSRLQ VRo,Ib (SSE2) |
(66h) PSRLDQ VRo,Ib (SSE2) |
PSLLQ PRq,Ib (MMX) (66h) PSLLQ VRo,Ib (SSE2) |
(66h) PSLLDQ VRo,Ib (SSE2) |
||||
| group #16 (0Fh,AEh) |
FXSAVE M512 (see CPUID) |
FXRSTOR M512 (see CPUID) |
LDMXCSR Md (SSE) |
STMXCSR Md (SSE) |
XSAVE M (see CPUID) |
XRSTOR M (see CPUID) LFENCE (SSE2-MEM) |
MFENCE (SSE2-MEM) |
CLFLUSH M (see CPUID) SFENCE (SSE-MEM) |
| group #17 (0Fh,18h) |
PREFETCH- NTA M (SSE-MEM) |
PREFETCH- T0 M (SSE-MEM) |
PREFETCH- T1 M (SSE-MEM) |
PREFETCH- T2 M (SSE-MEM) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
| group #17 (0Fh,19h) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
| group #17 (0Fh,1Ah) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
| group #17 (0Fh,1Bh) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
| group #17 (0Fh,1Ch) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
| group #17 (0Fh,1Dh) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
| group #17 (0Fh,1Eh) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
| group #17 (0Fh,1Fh) |
NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
HINT_NOP Ev (P6+) |
note: The opcodes marked with * are aliases to other opcodes.
