MOVDIR64B
REG0=A_GPR_R():r MEM0:r:zd:u32 MEM1:w:zd:SUPP BASE1=A_GPR_R():r:SUPP SEG1=XED_REG_ES:r:SUPP REG0=A_GPR_R():r MEM0:r:zd:u32 MEM1:w:zd:SUPP BASE1=A_GPR_R():r:SUPP
x86_64 X86_LEGACY MOVDIR MOVDIR64B source: xed
XED_MOVDIR64B_GPRa_MEM MOVDIR64B_GPRa_MEM
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | F8 0F 38 F8 |
| opcode_map | 0F38 |
| mandatory_prefix | - |
| has_modrm | True |
| requires_mode | long |
| attributes | REQUIRES_ALIGNMENT |
| cpl | 3 |
| raw_encoding | 0x0F 0x38 0xF8 MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM() osz_refining_prefix not64 0x0F 0x38 0xF8 MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM() osz_refining_prefix mode64 |
Operands (9)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | REG0 | REG | R | EXPLICIT | MODRM_REG | ||
| 1 | MEM0 | MEM | R | EXPLICIT | MODRM_RM | ||
| 2 | MEM1 | MEM | w | W | SUPPRESSED | MODRM_RM | |
| 3 | BASE1 | REG | R | SUPPRESSED | |||
| 4 | SEG1 | REG | (=ES) | R | SUPPRESSED | ||
| 5 | REG1 | REG | R | EXPLICIT | MODRM_REG | ||
| 6 | MEM2 | MEM | R | EXPLICIT | MODRM_RM | ||
| 7 | MEM3 | MEM | w | W | SUPPRESSED | MODRM_RM | |
| 8 | BASE1 | REG | R | SUPPRESSED |
Micro-ops sequence (0)
No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.