AOR
MEM0:rw:q REG0=GPR64_R():r:q
x86_64 X86_LEGACY APX RAO_INT source: xed
XED_AOR_MEM64_GPR64
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | FC |
| opcode_map | 0F38 |
| mandatory_prefix | - |
| has_modrm | True |
| rex_w | 1 |
| requires_mode | long |
| attributes | ATOMIC NOTSX REQUIRES_ALIGNMENT_8B |
| exception_class | LEGACY-RAO-INT |
| cpl | 3 |
| raw_encoding | 0x0F 0x38 0xFC MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM() f2_refining_prefix mode64 rexw_prefix |
Operands (2)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | MEM0 | MEM | q | RW | EXPLICIT | MODRM_RM | |
| 1 | REG0 | 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.