exception.h

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/*
 * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef _HARDWARE_EXCEPTION_H
#define _HARDWARE_EXCEPTION_H

#include "pico.h"
#include "hardware/address_mapped.h"
#include "hardware/regs/m0plus.h"

// PICO_CONFIG: PARAM_ASSERTIONS_ENABLED_EXCEPTION, Enable/disable assertions in the exception module, type=bool, default=0, group=hardware_exception
#ifndef PARAM_ASSERTIONS_ENABLED_EXCEPTION
#define PARAM_ASSERTIONS_ENABLED_EXCEPTION 0
#endif

#ifdef __cplusplus
extern "C" {
#endif

enum exception_number {
    NMI_EXCEPTION        = -14,     /* Non Maskable Interrupt */
    HARDFAULT_EXCEPTION  = -13,     /* HardFault Interrupt */
    SVCALL_EXCEPTION     =  -5,     /* SV Call Interrupt */
    PENDSV_EXCEPTION     =  -2,     /* Pend SV Interrupt */
    SYSTICK_EXCEPTION    =  -1,     /* System Tick Interrupt */
};

typedef void (*exception_handler_t)(void);

exception_handler_t exception_set_exclusive_handler(enum exception_number num, exception_handler_t handler);

void exception_restore_handler(enum exception_number num, exception_handler_t original_handler);

exception_handler_t exception_get_vtable_handler(enum exception_number num);
#ifdef __cplusplus
}
#endif

#endif