STMXCSR
MEM0:w:d REG0=XED_REG_MXCSR:r:SUPP
x86_64 X86_LEGACY SSE SSEMXCSR source: xed
XED_STMXCSR_X86_LEGACY_0F_AE_665593
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | AE |
| opcode_map | 0F |
| mandatory_prefix | - |
| has_modrm | True |
| modrm.reg = /3 | /3 |
| attributes | MXCSR_RD |
| exception_class | SSE_TYPE_5 |
| cpl | 3 |
| raw_encoding | 0x0F 0xAE MOD[mm] MOD!=3 REG[0b011] RM[nnn] no_refining_prefix MODRM() |
Operands (2)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | MEM0 | MEM | w | W | EXPLICIT | MODRM_RM | |
| 1 | REG0 | REG | R | SUPPRESSED | MODRM_REG |
Micro-ops sequence (0)
No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.