| /* |
| * Copyright (c) 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 ARCv2 system fatal error handler |
| * |
| * This module provides the _SysFatalErrorHandler() routine for ARCv2 BSPs. |
| */ |
| |
| #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 |
| |
| #ifdef CONFIG_MICROKERNEL |
| extern void _TaskAbort(void); |
| static inline void nonEssentialTaskAbort(void) |
| { |
| PRINTK("Fatal fault in task ! Aborting task.\n"); |
| _TaskAbort(); |
| } |
| #define NON_ESSENTIAL_TASK_ABORT() nonEssentialTaskAbort() |
| #else |
| #define NON_ESSENTIAL_TASK_ABORT() \ |
| do {/* nothing */ \ |
| } while ((0)) |
| #endif |
| |
| /** |
| * |
| * @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 pointer to exception stack frame |
| * |
| * @return N/A |
| */ |
| 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()) { |
| PRINTK("Fatal fault in %s ! Spinning...\n", |
| NANO_CTX_ISR == curCtx |
| ? "ISR" |
| : NANO_CTX_FIBER == curCtx ? "essential fiber" |
| : "essential task"); |
| for (;;) |
| ; /* spin forever */ |
| } |
| |
| if (NANO_CTX_FIBER == curCtx) { |
| PRINTK("Fatal fault in fiber ! Aborting fiber.\n"); |
| fiber_abort(); |
| return; |
| } |
| |
| NON_ESSENTIAL_TASK_ABORT(); |
| } |