ra8_register_guard.h

Go to the documentation of this file.

 
#pragma once
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <stdint.h>

typedef struct {
  uint32_t saved_primask; 
} ra8_register_guard_t;

static inline void ra8_register_guard_enter(ra8_register_guard_t* guard)
{
#ifdef RA8_OFF_TARGET
  guard->saved_primask = 0U;
#else
  uint32_t primask;
  __asm__ volatile("mrs %0, primask" : "=r"(primask));
  __asm__ volatile("cpsid i" ::: "memory");
  guard->saved_primask = primask;
#endif
}

static inline void ra8_register_guard_exit(const ra8_register_guard_t* guard)
{
#ifdef RA8_OFF_TARGET
  (void)guard;
#else
  __asm__ volatile("msr primask, %0" ::"r"(guard->saved_primask) : "memory");
#endif
}
 
#ifdef __cplusplus
}
#endif