PMOVMSKB

REG0=GPR32_R():w REG1=MMX_B():r:q:i8

x86_64 X86_LEGACY MMX SSE source: xed

XED_PMOVMSKB_X86_LEGACY_0F_D7_552152

Encoding

encoding_kindX86_LEGACY
opcode_bytesD7
opcode_map0F
mandatory_prefix-
has_modrmTrue
attributesNOTSX
exception_classmmx-nomem
cpl3
raw_encoding0x0F 0xD7 no_refining_prefix MOD[0b11] MOD=3 REG[rrr] RM[nnn]

Operands (2)

# Role Kind Class / Reg Width Access Visibility Encoded in
0 REG0 REG w W EXPLICIT MODRM_REG
1 REG1 REG q R EXPLICIT MODRM_REG

Micro-ops sequence (0)

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