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