JMP
MEM0:r:v REG0=rIP():w:SUPP REG0=GPRv_B():r REG1=rIP():w:SUPP
x86_64 X86_LEGACY UNCOND_BR I86 source: xed branch
XED_JMP_X86_LEGACY_ONEBYTE_FF_856527
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | FF FF |
| opcode_map | ONEBYTE |
| mandatory_prefix | - |
| has_modrm | True |
| modrm.reg = /4 | /4 |
| attributes | MPX_PREFIX_ABLE INDIRECT_BRANCH |
| cpl | 3 |
| raw_encoding | 0xFF MOD[mm] MOD!=3 REG[0b100] RM[nnn] DF64() IMMUNE66_LOOP64() MODRM() CET_NO_TRACK() 0xFF MOD[0b11] MOD=3 REG[0b100] RM[nnn] DF64() IMMUNE66_LOOP64() CET_NO_TRACK() |
Operands (4)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | MEM0 | MEM | v | R | EXPLICIT | MODRM_RM | |
| 1 | REG0 | REG | w | W | SUPPRESSED | MODRM_REG | |
| 2 | REG1 | REG | R | EXPLICIT | MODRM_REG | ||
| 3 | REG2 | REG | w | W | SUPPRESSED | MODRM_REG |
Micro-ops sequence (0)
No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.