MOVSXD

DATAXFER LONGMODE x86_64

MOVSXD is an instruction of the x86_64 architecture (x86 / x86-64 (covers 16/32/64-bit modes)), category DATAXFER. This page lists its 3 encoding forms, distinguished by opcode byte: 63.

Each form below links to its full decode: the operand roles and where each one is encoded in the instruction, the flag and register effects, and any micro-op sequence authored for it.

X86_MOVSXD_X86_LEGACY_ONEBYTE_63_25854
r16, r16/m16
X86_LEGACY 63 /r
XED_MOVSXD_GPRz_MEMz MOVSXD_GPR64_MEMd
REG0=GPRz_R():w MEM0:r:z REG0=GPR64_R():w MEM0:r:d
X86_LEGACY 63 63 /r LONGMODE
XED_MOVSXD_X86_LEGACY_ONEBYTE_63_865356
REG0=GPRv_R():w REG1=GPRz_B():r
X86_LEGACY 63 /r LONGMODE