KUNPCKBW
REG0=MASK_R():w:mskw REG1=MASK_N():r:mskw REG2=MASK_B():r:mskw
x86_64 X86_LEGACY KMASK AVX512F_KOPW source: xed
XED_KUNPCKBW_MASKmskw_MASKmskw_MASKmskw_AVX512
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | 4B |
| opcode_map | ONEBYTE |
| mandatory_prefix | - |
| has_modrm | True |
| vex_l | 1 |
| attributes | KMASK |
| exception_class | AVX512-K20 |
| cpl | 3 |
| raw_encoding | VV1 0x4B V66 V0F MOD[0b11] MOD=3 REG[rrr] RM[nnn] VL256 W0 |
Operands (3)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | REG0 | REG | w | W | EXPLICIT | MODRM_REG | |
| 1 | REG1 | REG | R | EXPLICIT | MODRM_REG | ||
| 2 | REG2 | REG | R | EXPLICIT | MODRM_REG |
Micro-ops sequence (0)
No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.