VFNMSUB231SS

REG0=XMM_R():rw:dq:f32 REG1=XMM_N():r:d:f32 MEM0:r:d:f32 REG0=XMM_R():rw:dq:f32 REG1=XMM_N():r:d:f32 REG2=XMM_B():r:d:f32

x86_64 X86_LEGACY VFMA FMA source: xed

XED_VFNMSUB231SS_X86_LEGACY_ONEBYTE_BF_968083

Encoding

encoding_kindX86_LEGACY
opcode_bytesBF BF
opcode_mapONEBYTE
mandatory_prefix-
has_modrmTrue
attributesMXCSR simd_scalar
exception_classavx-type-3
cpl3
raw_encodingVV1 0xBF V66 V0F38 W0 MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM() VV1 0xBF V66 V0F38 W0 MOD[0b11] MOD=3 REG[rrr] RM[nnn]

Operands (6)

# Role Kind Class / Reg Width Access Visibility Encoded in
0 REG0 REG f32 RW EXPLICIT MODRM_REG
1 REG1 REG d R EXPLICIT MODRM_REG
2 MEM0 MEM d R EXPLICIT MODRM_RM
3 REG2 REG f32 RW EXPLICIT MODRM_REG
4 REG3 REG d R EXPLICIT MODRM_REG
5 REG4 REG d R EXPLICIT MODRM_REG

Micro-ops sequence (0)

No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.