This content has not been validated; it was AI-generated following the x86-64 ISA Documentation generation process to maintain high quality. However, as no human has verified this data, errors may exist. If the accuracy of this data is critical, please consult the Intel SDM. The model used to generate this is gemma4:31b
RSTORSSP
RSTORSSP restores the stack pointer from a shadow stack pointer. It pops the value from the shadow stack and loads it into the RSP register.
The table below covers what the source and destinations can be.
| source | destination(s) |
|---|---|
| m64 | r64 |
DO NOT support LOCK
This instruction is only available when Control-flow Enforcement Technology (CET) is enabled. It operates exclusively in 64-bit mode.
The instruction MUST be used in conjunction with the shadow stack mechanism; if the shadow stack is not enabled or if the operation violates shadow stack integrity, a Control Protection Exception (#CP) SHALL occur. The value being restored MUST be a valid shadow stack pointer.