scb.h

Go to the documentation of this file.

/*
 * Copyright (c) 2025 STMicroelectronics
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ARM_CORTEX_M_SCB_H_
#define ARM_CORTEX_M_SCB_H_
 
#include <stdint.h>
#include <cmsis_core.h>
 
/* Define macros for CPU-conditional features */
#if defined(CONFIG_CPU_CORTEX_M0)  || \
        defined(CONFIG_CPU_CORTEX_M0PLUS)  || \
        defined(CONFIG_CPU_CORTEX_M1) || \
        defined(CONFIG_CPU_CORTEX_M23)
#define SHPR_SIZE_W 2
#else
#define SHPR_SIZE_W 3
#define CPACR_PRESENT 1
#endif
 
struct scb_context {
#if defined(CONFIG_CPU_CORTEX_M_HAS_VTOR)
        uint32_t vtor;   
#endif
        uint32_t aircr;  
        uint32_t scr;    
        uint32_t ccr;    
        uint32_t shpr[SHPR_SIZE_W]; 
        uint32_t shcsr;  
#if defined(CPACR_PRESENT)
        uint32_t cpacr;  
#endif /* CPACR_PRESENT */
};
 
void z_arm_save_scb_context(struct scb_context *context);
 
void z_arm_restore_scb_context(const struct scb_context *context);
 
#endif /* ARM_CORTEX_M_SCB_H_ */