SHL

REG0=GPRv_B():rw IMM0:r:b:IMPL

x86_64 X86_LEGACY SHIFT I86 source: xed

XED_SHL_GPRv_ONE_D1r6

Encoding

encoding_kindX86_LEGACY
opcode_bytesD1
opcode_mapONEBYTE
mandatory_prefix-
has_modrmTrue
modrm.reg = /6/6
attributesIMPLICIT_ONE UNDOCUMENTED
cpl3
raw_encoding0xD1 MOD[0b11] MOD=3 REG[0b110] RM[nnn] ONE()

Operands (2)

# Role Kind Class / Reg Width Access Visibility Encoded in
0 REG0 REG RW EXPLICIT MODRM_REG
1 IMM0 IMM b R IMPLICIT IMM

Flag effects (6)

CF = WRITE PF = WRITE AF = UNDEFINED ZF = WRITE SF = WRITE OF = WRITE

Micro-ops sequence (0)

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