| /* |
| * Copyright (c) 2014 Wind River Systems, Inc. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * @file |
| * @brief ARM Cortex-M system fatal error handler |
| * |
| * This module provides the _SysFatalErrorHandler() routine for Cortex-M |
| * platforms. |
| */ |
| |
| #include <kernel.h> |
| #include <toolchain.h> |
| #include <linker/sections.h> |
| #include <kernel_structs.h> |
| #include <misc/printk.h> |
| |
| /** |
| * |
| * @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 fatal error reason |
| * @param pEsf pointer to exception stack frame |
| * |
| * @return N/A |
| */ |
| void __weak _SysFatalErrorHandler(unsigned int reason, |
| const NANO_ESF *pEsf) |
| { |
| ARG_UNUSED(pEsf); |
| |
| #if !defined(CONFIG_SIMPLE_FATAL_ERROR_HANDLER) |
| #ifdef CONFIG_STACK_SENTINEL |
| if (reason == _NANO_ERR_STACK_CHK_FAIL) { |
| goto hang_system; |
| } |
| #endif |
| if (reason == _NANO_ERR_KERNEL_PANIC) { |
| goto hang_system; |
| } |
| if (k_is_in_isr() || _is_thread_essential()) { |
| printk("Fatal fault in %s! Spinning...\n", |
| k_is_in_isr() ? "ISR" : "essential thread"); |
| goto hang_system; |
| } |
| printk("Fatal fault in thread %p! Aborting.\n", _current); |
| k_thread_abort(_current); |
| return; |
| |
| hang_system: |
| #else |
| ARG_UNUSED(reason); |
| #endif |
| |
| for (;;) { |
| k_cpu_idle(); |
| } |
| CODE_UNREACHABLE; |
| } |