The processor uses SP as a pointer to the active stack. More...
Functions | |
__STATIC_FORCEINLINE void | __set_SP (uint32_t stack) |
Set Stack Pointer. | |
__STATIC_FORCEINLINE void | __set_SP_usr (uint32_t topOfProcStack) |
Set USR/SYS Stack Pointer. | |
The processor uses SP as a pointer to the active stack.
The Stack Pointer is banked per processor mode. Accessing the active stack pointer actually returns/modifies the stack pointer of the current processor execution mode.
Mode | Actual SP |
---|---|
User/System | SP_usr |
Hypervisor | SP_hyp |
Supervisor | SP_svc |
Abort | SP_abt |
Undefined | SP_und |
Monitor | SP_mon |
IRQ | SP_irq |
FIQ | SP_fiq |
Consider __set_SP and __set_SP_usr to access this register.
__STATIC_FORCEINLINE void __set_SP | ( | uint32_t | stack | ) |
Set Stack Pointer.
[in] | stack | Stack Pointer value to set |
This function assigns the given value to the current stack pointer.
__STATIC_FORCEINLINE void __set_SP_usr | ( | uint32_t | topOfProcStack | ) |
Set USR/SYS Stack Pointer.
[in] | topOfProcStack | USR/SYS Stack Pointer value to set |
This function assigns the given value to the User/System Stack Pointer (SP_usr).