VFMSUB231SS
REG0=XMM_R3():rw:dq:f32 REG1=MASK1():r:mskw:TXT=ZEROSTR REG2=XMM_N3():r:dq:f32 REG3=XMM_B3():r:dq:f32
x86_64 X86_LEGACY VFMA AVX512F_SCALAR source: xed
XED_VFMSUB231SS_XMMf32_MASKmskw_XMMf32_XMMf32_AVX512
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | BB |
| opcode_map | ONEBYTE |
| mandatory_prefix | - |
| has_modrm | True |
| attributes | MASKOP_EVEX MXCSR SIMD_SCALAR |
| exception_class | AVX512-E3 |
| cpl | 3 |
| raw_encoding | EVV 0xBB V66 V0F38 MOD[0b11] MOD=3 BCRC=0 UBIT=1 REG[rrr] RM[nnn] W0 FIX_ROUND_LEN128() |
Operands (4)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | REG0 | REG | f32 | RW | EXPLICIT | MODRM_REG | |
| 1 | REG1 | REG | R | EXPLICIT | MODRM_REG | ||
| 2 | REG2 | REG | f32 | R | EXPLICIT | MODRM_REG | |
| 3 | REG3 | REG | f32 | R | EXPLICIT | MODRM_REG |
Micro-ops sequence (0)
No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.