WRMSR
REG0=XED_REG_EAX:r:SUPP REG1=XED_REG_EDX:r:SUPP REG2=XED_REG_ECX:r:SUPP REG3=XED_REG_MSRS:w:SUPP
x86_64 X86_LEGACY SYSTEM PENTIUMREAL source: xed
XED_WRMSR_X86_LEGACY_0F_30_153811
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | 30 |
| opcode_map | 0F |
| mandatory_prefix | - |
| has_modrm | False |
| attributes | RING0 NOTSX |
| cpl | 0 |
| raw_encoding | 0x0F 0x30 norex2_prefix |
Operands (4)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | REG0 | REG | (=EAX) | R | SUPPRESSED | MODRM_REG | |
| 1 | REG1 | REG | (=EDX) | R | SUPPRESSED | MODRM_REG | |
| 2 | REG2 | REG | (=ECX) | R | SUPPRESSED | MODRM_REG | |
| 3 | REG3 | 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.