blob: 45ff173d6042d6d52d78a93f014aae12f480b245 [file] [log] [blame]
/*
* Copyright (c) 2013-2014 Wind River Systems, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Cortex-M public exception handling
*
* ARM-specific kernel exception handling interface. Included by arm/arch.h.
*/
#ifndef _ARCH_ARM_CORTEXM_EXC_H_
#define _ARCH_ARM_CORTEXM_EXC_H_
#ifdef __cplusplus
extern "C" {
#endif
/* for assembler, only works with constants */
#define _EXC_PRIO(pri) (((pri) << (8 - CONFIG_NUM_IRQ_PRIO_BITS)) & 0xff)
#ifdef CONFIG_ZERO_LATENCY_IRQS
#define _ZERO_LATENCY_IRQS_RESERVED_PRIO 1
#else
#define _ZERO_LATENCY_IRQS_RESERVED_PRIO 0
#endif
#if defined(CONFIG_CPU_CORTEX_M_HAS_PROGRAMMABLE_FAULT_PRIOS) || \
defined(CONFIG_CPU_CORTEX_M_HAS_BASEPRI)
#define _EXCEPTION_RESERVED_PRIO 1
#else
#define _EXCEPTION_RESERVED_PRIO 0
#endif
#define _IRQ_PRIO_OFFSET \
(_ZERO_LATENCY_IRQS_RESERVED_PRIO + \
_EXCEPTION_RESERVED_PRIO)
#define _EXC_IRQ_DEFAULT_PRIO _EXC_PRIO(_IRQ_PRIO_OFFSET)
#ifdef _ASMLANGUAGE
GTEXT(_ExcExit);
#else
#include <zephyr/types.h>
struct __esf {
sys_define_gpr_with_alias(a1, r0);
sys_define_gpr_with_alias(a2, r1);
sys_define_gpr_with_alias(a3, r2);
sys_define_gpr_with_alias(a4, r3);
sys_define_gpr_with_alias(ip, r12);
sys_define_gpr_with_alias(lr, r14);
sys_define_gpr_with_alias(pc, r15);
u32_t xpsr;
#ifdef CONFIG_FLOAT
float s[16];
u32_t fpscr;
u32_t undefined;
#endif
};
typedef struct __esf NANO_ESF;
extern void _ExcExit(void);
/**
* @brief display the contents of a exception stack frame
*
* @return N/A
*/
extern void sys_exc_esf_dump(NANO_ESF *esf);
#endif /* _ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _ARCH_ARM_CORTEXM_EXC_H_ */