opcode groups
note: A leading bold V indicates that the instruction can be VEX-encoded, in which case it may have additional operands.
note: A leading bold ! indicates that the 256-bit version was only introduced with AVX2 and that it can only be VEX-encoded.
| mod R/M |
|
xx000xxx | xx001xxx | xx010xxx | xx011xxx | xx100xxx | xx101xxx | xx110xxx | xx111xxx |
| group #1 (80h) |
|
ADD Eb,Ib | OR Eb,Ib | ADC Eb,Ib | SBB Eb,Ib | AND Eb,Ib | SUB Eb,Ib | XOR Eb,Ib | CMP Eb,Ib |
| group #1 (81h) |
|
ADD Ev,Iz | OR Ev,Iz | ADC Ev,Iz | SBB Ev,Iz | AND Ev,Iz | SUB Ev,Iz | XOR Ev,Iz | CMP Ev,Iz |
| group #1 (82h) |
|
ADD* Eb,Ib | OR* Eb,Ib | ADC* Eb,Ib | SBB* Eb,Ib | AND* Eb,Ib | SUB* Eb,Ib | XOR* Eb,Ib | CMP* Eb,Ib |
| group #1 (83h) |
|
ADD Ev,Ib | OR Ev,Ib | ADC Ev,Ib | SBB Ev,Ib | AND Ev,Ib | SUB Ev,Ib | XOR Ev,Ib | CMP Ev,Ib |
| group #1A (8Fh) |
|
POPD64 Ev | XOP (000b) XOP (001b) XOP (010b) |
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| group #2 (C0h) (80186+) |
|
ROL Eb,Ib | ROR Eb,Ib | RCL Eb,Ib | RCR Eb,Ib | SHL Eb,Ib | SHR Eb,Ib | SAL* Eb,Ib | SAR Eb,Ib |
| group #2 (C1h) (80186+) |
|
ROL Ev,Ib | ROR Ev,Ib | RCL Ev,Ib | RCR Ev,Ib | SHL Ev,Ib | SHR Ev,Ib | SAL* Ev,Ib | SAR Ev,Ib |
| group #2 (D0h) |
|
ROL Eb,1 | ROR Eb,1 | RCL Eb,1 | RCR Eb,1 | SHL Eb,1 | SHR Eb,1 | SAL* Eb,1 | SAR Eb,1 |
| group #2 (D1h) |
|
ROL Ev,1 | ROR Ev,1 | RCL Ev,1 | RCR Ev,1 | SHL Ev,1 | SHR Ev,1 | SAL* Ev,1 | SAR Ev,1 |
| group #2 (D2h) |
|
ROL Eb,CL | ROR Eb,CL | RCL Eb,CL | RCR Eb,CL | SHL Eb,CL | SHR Eb,CL | SAL* Eb,CL | SAR Eb,CL |
| group #2 (D3h) |
|
ROL Ev,CL | ROR Ev,CL | RCL Ev,CL | RCR Ev,CL | SHL Ev,CL | SHR Ev,CL | SAL* Ev,CL | SAR Ev,CL |
| group #3 (F6h) |
|
TEST Eb,Ib | TEST* Eb,Ib | NOT Eb | NEG Eb | MUL Eb | IMUL Eb | DIV Eb | IDIV Eb |
| group #3 (F7h) |
|
TEST Ev,Iz | TEST* Ev,Iz | NOT Ev | NEG Ev | MUL Ev | IMUL Ev | DIV Ev | IDIV Ev |
| group #4 (FEh) |
|
INC Eb | DEC Eb | ||||||
| group #5 (FFh) |
|
INC Ev | DEC Ev | CALLDf64 Ev | CALL Mp (w:z) (or call gate's y) |
JMPDf64 Ev | JMP Mp (w:z) (or call gate's y) |
PUSHD64 Ev | |
| group #6 (0Fh,00h) |
|
SLDT Mw | STR Mw | LLDT Mw | LTR Mw | VERR Mw | VERW Mw | JMPE Ev (IA-64) |
|
| |
SLDT Rv | STR Rv | LLDT Rv | LTR Rv | VERR Rv | VERW Rv | |||
| group #7 (0Fh,01h) |
|
SGDTF64 Mp (w:y) |
SIDTF64 Mp (w:y) |
LGDTF64 Mp (w:y) |
LIDTF64 Mp (w:y) |
SMSW Mw | LMSW Mw | INVLPG M (80486+) |
|
| |
VMCALL (C1h) VMLAUNCH (C2h) VMRESUME (C3h) VMXOFF (C4h) (see CPUID) |
MONITOR (C8h) MWAIT (C9h) CLAC (CAh) STAC (CBh) (see CPUID) |
XGETBV (D0h) XSETBV (D1h) VMFUNC (D4h) XEND (D5h) XTEST (D6h) (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) RDTSCP (F9h) (see CPUID) |
||
| group #8 (0Fh,BAh) (80386+) |
|
BT Ev,Ib | BTS Ev,Ib | BTR Ev,Ib | BTC Ev,Ib | ||||
| group #9 (0Fh,C7h) |
|
CMPXCHG8B Mq CMPXCHG16B Mo (see CPUID) |
(n/a) VMPTRLD Mq (66h) VMCLEAR Mq (F3h) VMXON Mq (see CPUID) |
(n/a) VMPTRST Mq (see CPUID) |
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| |
RDRAND Rv (see CPUID) |
RDSEED Rv (see CPUID) |
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| group #10 (0Fh,B9h) |
|
UD2 | UD2 | UD2 | UD2 | UD2 | UD2 | UD2 | UD2 |
| group #11 (C6h) |
|
MOV Eb,Ib |
XABORT Ib (F8h) (see CPUID) |
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| group #11 (C7h) |
|
MOV Ev,Iz |
XBEGIN Jz (F8h) (see CPUID) |
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| group #12 (0Fh,71h) |
|
PSRLW Nq,Ib (MMX) (66h) !VPSRLW Hx,Ux,Ib (SSE2) |
PSRAW Nq,Ib (MMX) (66h) !VPSRAW Hx,Ux,Ib (SSE2) |
PSLLW Nq,Ib (MMX) (66h) !VPSLLW Hx,Ux,Ib (SSE2) |
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| group #13 (0Fh,72h) |
|
PSRLD Nq,Ib (MMX) (66h) !VPSRLD Hx,Ux,Ib (SSE2) |
PSRAD Nq,Ib (MMX) (66h) !VPSRAD Hx,Ux,Ib (SSE2) |
PSLLD Nq,Ib (MMX) (66h) !VPSLLD Hx,Ux,Ib (SSE2) |
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| group #13 (MVEX 66h) (0Fh,72h) |
|
VPSRLD Hz {Kw}, Si32r (Wzt),Ib (W=0) (K1OM) |
VPSRAD Hz {Kw}, Si32r (Wzt),Ib (W=0) (K1OM) |
VPSLLD Hz {Kw}, Si32r (Wzt),Ib (W=0) (K1OM) |
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| group #14 (0Fh,73h) |
|
PSRLQ Nq,Ib (MMX) (66h) !VPSRLQ Hx,Ux,Ib (SSE2) |
(66h) !VPSRLDQ Hx,Ux,Ib (SSE2) |
PSLLQ Nq,Ib (MMX) (66h) !VPSLLQ Hx,Ux,Ib (SSE2) |
(66h) !VPSLLDQ Hx,Ux,Ib (SSE2) |
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| group #15 (0Fh,AEh) |
|
FXSAVE M (see CPUID) |
FXRSTOR M (see CPUID) |
VLDMXCSR Md (SSE) |
VSTMXCSR Md (SSE) |
XSAVE M (see CPUID) |
XRSTOR M (see CPUID) |
XSAVEOPT M (see CPUID) |
CLFLUSH M (see CPUID) |
| |
(F3) RDFSBASE Ry (see CPUID) |
(F3) RDGSBASE Ry (see CPUID) |
(F3) WRFSBASE Ry (see CPUID) |
(F3) WRGSBASE Ry (see CPUID) |
LFENCE#r/m (SSE2-MEM) |
MFENCE#r/m (SSE2-MEM) |
SFENCE#r/m (SSE-MEM) |
||
| group #15 (VEX F2h) (0Fh,AEh) |
|
SPFLT Ry (K1OM) |
CLEVICT0 M (K1OM) |
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| group #15 (MVEX F2h) (0Fh,AEh) |
|
CLEVICT0 M (K1OM) |
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| group #15 (VEX F3h) (0Fh,AEh) |
|
DELAY Ry (K1OM) |
CLEVICT1 M (K1OM) |
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| group #15 (MVEX F3h) (0Fh,AEh) |
|
CLEVICT1 M (K1OM) |
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| group #16 (0Fh,18h) |
|
PREFETCHNTA M (SSE-MEM) HINT_NOP Rv (P6+) |
PREFETCHT0 M (SSE-MEM) HINT_NOP Rv (P6+) |
PREFETCHT1 M (SSE-MEM) HINT_NOP Rv (P6+) |
PREFETCHT2 M (SSE-MEM) HINT_NOP Rv (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
| group #16 (VEX) (0Fh,18h) |
|
VPREFETCHNTA M (K1OM) |
VPREFETCHT0 M (K1OM) |
VPREFETCHT1 M (K1OM) |
VPREFETCHT2 M (K1OM) |
VPREFETCHENTA M (K1OM) |
VPREFETCHET0 M (K1OM) |
VPREFETCHET1 M (K1OM) |
VPREFETCHET2 M (K1OM) |
| group #16 (MVEX) (0Fh,18h) |
|
VPREFETCHNTA M (K1OM) |
VPREFETCHT0 M (K1OM) |
VPREFETCHT1 M (K1OM) |
VPREFETCHT2 M (K1OM) |
VPREFETCHENTA M (K1OM) |
VPREFETCHET0 M (K1OM) |
VPREFETCHET1 M (K1OM) |
VPREFETCHET2 M (K1OM) |
| group #16 (0Fh,19h) |
|
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
| group #16 (0Fh,1Ah) |
|
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
| group #16 (0Fh,1Bh) |
|
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
| group #16 (0Fh,1Ch) |
|
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
| group #16 (0Fh,1Dh) |
|
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
| group #16 (0Fh,1Eh) |
|
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
| group #16 (0Fh,1Fh) |
|
NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
HINT_NOP E[bv] (P6+) |
| group #17 (VEX) (0F 38 F3) |
|
BLSRv By,Ey (BMI) |
BLSMSKv By,Ey (BMI) |
BLSIv By,Ey (BMI) |
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| group #18 (MVEX 66) (0F 38 C6) |
|
VGATHER- PF0HINTDPS Uf32 (Mdt.z) {Kw.!0} (W=0) VGATHER- PF0HINTDPD Uf64 (Mqt.z) {Kw.!0} (W=1) (K1OM,VSIB) |
VGATHER- PF0DPS Uf32 (Mdt.z) {Kw.!0} (W=0) (K1OM,VSIB) |
VGATHER- PF1DPS Uf32 (Mdt.z) {Kw.!0} (W=0) (K1OM,VSIB) |
VSCATTER- PF0HINTDPS Uf32 (Mdt.z) {Kw.!0} (W=0) VSCATTER- PF0HINTDPD Uf64 (Mqt.z) {Kw.!0} (W=1) (K1OM,VSIB) |
VSCATTER- PF0DPS Uf32 (Mdt.z) {Kw.!0} (W=0) (K1OM,VSIB) |
VSCATTER- PF1DPS Uf32 (Mdt.z) {Kw.!0} (W=0) (K1OM,VSIB) |
note: The opcodes marked with * are aliases to other opcodes.
