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CMSIS-Core (Cortex-A)
Version 1.0.0
CMSIS-Core support for Cortex-A processor-based devices
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The processor uses SP as a pointer to the active stack. More...
Functions | |
| __STATIC_INLINE __ASM void | __set_SP (uint32_t stack) |
| Set Stack Pointer. More... | |
| __STATIC_INLINE __ASM void | __set_SP_usr (uint32_t topOfProcStack) |
| Set USR/SYS Stack Pointer. More... | |
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_INLINE __ASM void __set_SP | ( | uint32_t | stack | ) |
| [in] | stack | Stack Pointer value to set |
This function assigns the given value to the current stack pointer.
| __STATIC_INLINE __ASM void __set_SP_usr | ( | uint32_t | topOfProcStack | ) |
| [in] | topOfProcStack | USR/SYS Stack Pointer value to set |
This function assigns the given value to the User/System Stack Pointer (SP_usr).