| /* |
| * 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 Common system fatal error handler |
| * |
| * This module provides the _SysFatalErrorHandler() routine which is common to |
| * supported platforms. |
| */ |
| |
| #include <nanokernel.h> |
| #include <toolchain.h> |
| #include <sections.h> |
| |
| #ifdef CONFIG_PRINTK |
| #include <misc/printk.h> |
| #define PRINTK(...) printk(__VA_ARGS__) |
| #else |
| #define PRINTK(...) |
| #endif /* CONFIG_PRINTK */ |
| |
| /** |
| * |
| * @brief Fatal error handler |
| * |
| * This routine implements the corrective action to be taken when the system |
| * detects a fatal error. |
| * |
| * This sample implementation attempts to abort the current thread and allow |
| * the system to continue executing, which may permit the system to continue |
| * functioning with degraded capabilities. |
| * |
| * System designers may wish to enhance or substitute this sample |
| * implementation to take other actions, such as logging error (or debug) |
| * information to a persistent repository and/or rebooting the system. |
| * |
| * @param reason the fatal error reason |
| * @param pEsf the pointer to the exception stack frame |
| * |
| * @return This function does not return. |
| */ |
| FUNC_NORETURN void _SysFatalErrorHandler(unsigned int reason, |
| const NANO_ESF * pEsf) |
| { |
| nano_context_type_t curCtx = sys_execution_context_type_get(); |
| |
| ARG_UNUSED(reason); |
| ARG_UNUSED(pEsf); |
| |
| if ((curCtx != NANO_CTX_ISR) && !_is_thread_essential()) { |
| #ifdef CONFIG_MICROKERNEL |
| if (curCtx == NANO_CTX_TASK) { |
| extern FUNC_NORETURN void _TaskAbort(void); |
| PRINTK("Fatal task error! Aborting task.\n"); |
| _TaskAbort(); |
| } else |
| #endif /* CONFIG_MICROKERNEL */ |
| { |
| PRINTK("Fatal fiber error! Aborting fiber.\n"); |
| fiber_abort(); |
| } |
| } else { |
| #ifdef CONFIG_PRINTK |
| /* |
| * Conditionalize the ctxText[] definition to prevent an "unused |
| * variable" warning when the PRINTK kconfig option is disabled. |
| */ |
| |
| static const char * const ctxText[] = {"ISR", "essential fiber", |
| "essential task"}; |
| |
| PRINTK("Fatal %s error! Spinning...\n", ctxText[curCtx]); |
| #endif /* CONFIG_PRINTK */ |
| } |
| |
| do { |
| } while (1); |
| } |