| /* |
| * 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 Common fault handler for ARCv2 |
| * |
| * Common fault handler for ARCv2 processors. |
| */ |
| |
| #include <toolchain.h> |
| #include <sections.h> |
| |
| #include <nanokernel.h> |
| #include <nano_private.h> |
| |
| #ifdef CONFIG_PRINTK |
| #include <misc/printk.h> |
| #define PR_EXC(...) printk(__VA_ARGS__) |
| #else |
| #define PR_EXC(...) |
| #endif /* CONFIG_PRINTK */ |
| |
| #if (CONFIG_FAULT_DUMP > 0) |
| #define FAULT_DUMP(esf, fault) _FaultDump(esf, fault) |
| #else |
| #define FAULT_DUMP(esf, fault) \ |
| do { \ |
| (void) esf; \ |
| (void) fault; \ |
| } while ((0)) |
| #endif |
| |
| #if (CONFIG_FAULT_DUMP > 0) |
| /* |
| * @brief Dump information regarding fault (FAULT_DUMP > 0) |
| * |
| * Dump information regarding the fault when CONFIG_FAULT_DUMP is set to 1 |
| * (short form). |
| * |
| * @return N/A |
| */ |
| void _FaultDump(const NANO_ESF *esf, int fault) |
| { |
| ARG_UNUSED(esf); |
| #ifdef CONFIG_PRINTK |
| uint32_t exc_addr = _arc_v2_aux_reg_read(_ARC_V2_EFA); |
| uint32_t ecr = _arc_v2_aux_reg_read(_ARC_V2_ECR); |
| |
| PR_EXC("Exception vector: 0x%x, cause code: 0x%x, parameter 0x%x\n", |
| _ARC_V2_ECR_VECTOR(ecr), |
| _ARC_V2_ECR_CODE(ecr), |
| _ARC_V2_ECR_PARAMETER(ecr)); |
| PR_EXC("Address 0x%x\n", exc_addr); |
| #endif |
| } |
| #endif /* CONFIG_FAULT_DUMP */ |
| |
| /* |
| * @brief Fault handler |
| * |
| * This routine is called when fatal error conditions are detected by hardware |
| * and is responsible only for reporting the error. Once reported, it then |
| * invokes the user provided routine _SysFatalErrorHandler() which is |
| * responsible for implementing the error handling policy. |
| * |
| * @return This function does not return. |
| */ |
| void _Fault(void) |
| { |
| uint32_t ecr = _arc_v2_aux_reg_read(_ARC_V2_ECR); |
| |
| FAULT_DUMP(&_default_esf, ecr); |
| |
| _SysFatalErrorHandler(_NANO_ERR_HW_EXCEPTION, &_default_esf); |
| } |