barrier.h

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#ifndef ZEPHYR_INCLUDE_BARRIER_ARM_H_
#define ZEPHYR_INCLUDE_BARRIER_ARM_H_
 
#ifndef ZEPHYR_INCLUDE_SYS_BARRIER_H_
#error Please include <zephyr/sys/barrier.h>
#endif
 
#if defined(CONFIG_CPU_ARM9)
#define __DMB() __asm__("" ::: "memory")
#define __DSB() __asm__("mcr p15, 0, %0, c7, c10, 4" :: "r"(0) : "memory")
#define __ISB() __asm__("" ::: "memory")
#define __sync_synchronize() __asm__("" ::: "memory")
#else
#include <cmsis_core.h>
#endif
 
#ifdef __cplusplus
extern "C" {
#endif
 
static ALWAYS_INLINE void z_barrier_sync_synchronize(void)
{
        __sync_synchronize();
}
 
static ALWAYS_INLINE void z_barrier_dmem_fence_full(void)
{
        __DMB();
}
 
static ALWAYS_INLINE void z_barrier_dsync_fence_full(void)
{
        __DSB();
}
 
static ALWAYS_INLINE void z_barrier_isync_fence_full(void)
{
        __ISB();
}
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_INCLUDE_BARRIER_ARM_H_ */