JCXZ
RELBR:r:b:i8 REG0=XED_REG_CX:r:SUPP REG1=XED_REG_IP:rw:SUPP
x86_64 X86_LEGACY COND_BR I386 source: xed branch
XED_JCXZ_X86_LEGACY_ONEBYTE_E3_481509
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | E3 |
| opcode_map | ONEBYTE |
| mandatory_prefix | - |
| has_modrm | False |
| cpl | 3 |
| raw_encoding | 0xE3 eamode16 BRDISP8() |
Operands (3)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | RELBR | REL_BR | b | R | EXPLICIT | IMM | |
| 1 | REG0 | REG | (=CX) | R | SUPPRESSED | MODRM_REG | |
| 2 | REG1 | REG | (=IP) | RW | SUPPRESSED | MODRM_REG |
Micro-ops sequence (0)
No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.