MOVSB
MEM0:w:SUPP:b BASE0=ArDI():rw:SUPP SEG0=FINAL_ESEG():r:SUPP MEM1:r:SUPP:b BASE1=ArSI():rw:SUPP SEG1=FINAL_DSEG1():r:SUPP
x86_64 X86_LEGACY STRINGOP I86 source: xed
XED_MOVSB_X86_LEGACY_ONEBYTE_A4_357917
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | A4 |
| opcode_map | ONEBYTE |
| mandatory_prefix | - |
| has_modrm | False |
| attributes | fixed_base0 fixed_base1 BYTEOP |
| cpl | 3 |
| raw_encoding | 0xA4 norep norex2_prefix OVERRIDE_SEG1() |
Operands (6)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | MEM0 | MEM | w | W | SUPPRESSED | MODRM_RM | |
| 1 | BASE0 | REG | RW | SUPPRESSED | |||
| 2 | SEG0 | REG | R | SUPPRESSED | |||
| 3 | MEM1 | MEM | b | R | SUPPRESSED | MODRM_RM | |
| 4 | BASE1 | REG | RW | SUPPRESSED | |||
| 5 | SEG1 | REG | R | SUPPRESSED |
Flag effects (1)
DF = READ
Micro-ops sequence (0)
No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.