UD1
REG0=GPR32_R():r MEM0:r:d REG0=GPR32_R():r REG1=GPR32_B():r
x86_64 X86_LEGACY MISC PPRO source: xed
XED_UD1_X86_LEGACY_0F_B9_195741
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | B9 0F B9 |
| opcode_map | 0F |
| mandatory_prefix | - |
| has_modrm | True |
| attributes | NOTSX |
| cpl | 3 |
| raw_encoding | 0x0F 0xB9 MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM() 0x0F 0xB9 MOD[0b11] MOD=3 REG[rrr] RM[nnn] |
Operands (4)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | REG0 | REG | R | EXPLICIT | MODRM_REG | ||
| 1 | MEM0 | MEM | d | R | EXPLICIT | MODRM_RM | |
| 2 | REG1 | REG | R | EXPLICIT | MODRM_REG | ||
| 3 | REG2 | REG | R | EXPLICIT | MODRM_REG |
Micro-ops sequence (0)
No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.