111 lines
2.4 KiB
C
111 lines
2.4 KiB
C
/*
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* Copyright (c) 2013-2014 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file
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* @brief Cortex-M public exception handling
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*
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* ARM-specific nanokernel exception handling interface. Included by ARM/arch.h.
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*/
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#ifndef _ARCH_ARM_CORTEXM_EXC_H_
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#define _ARCH_ARM_CORTEXM_EXC_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef _ASMLANGUAGE
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GTEXT(_ExcExit);
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#else
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#include <stdint.h>
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struct __esf {
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sys_define_gpr_with_alias(a1, r0);
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sys_define_gpr_with_alias(a2, r1);
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sys_define_gpr_with_alias(a3, r2);
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sys_define_gpr_with_alias(a4, r3);
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sys_define_gpr_with_alias(ip, r12);
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sys_define_gpr_with_alias(lr, r14);
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sys_define_gpr_with_alias(pc, r15);
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uint32_t xpsr;
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};
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typedef struct __esf NANO_ESF;
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extern const NANO_ESF _default_esf;
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extern void _ExcExit(void);
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#if !defined(CONFIG_XIP)
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/* currently, exception connecting is only available to non-XIP kernels */
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/**
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* @brief signature for an exception handler
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*/
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#define sys_exc_handler_sig(x) void (x)(NANO_ESF *esf)
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/**
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* @brief exception handler data type
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*/
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typedef sys_exc_handler_sig(sys_exc_handler_t);
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/**
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* @brief connect a handler to an exception vector
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*
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* Connect the @a handler to the exception vector @a num.
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*
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* The @a unused parameter is only there to match the x86 signature.
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*
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* @param num Exception vector number
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* @param handler Exception handler to connect
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* @param unused Unused
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*
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* @return N/A
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*/
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extern void sys_exc_connect(unsigned int num, sys_exc_handler_t *handler,
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void *unused);
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/**
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* @brief alias of sys_exc_connect
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*
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* See sys_exc_connect().
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*/
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extern void nanoCpuExcConnect(unsigned int, sys_exc_handler_t *, void *);
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/**
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* @brief display the contents of a exception stack frame
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*
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* @return N/A
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*/
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extern void sys_exc_esf_dump(NANO_ESF *esf);
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#endif
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#endif /* _ASMLANGUAGE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ARCH_ARM_CORTEXM_EXC_H_ */
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