116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
/* sysFatalErrorHandler - ARM Cortex-M system fatal error handler */
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/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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This module provides the _SysFatalErrorHandler() routine for Cortex-M BSPs.
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*/
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/* includes */
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#include <cputype.h>
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#include <nanokernel.h>
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#include <nanokernel/cpu.h>
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#include <toolchain.h>
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#include <sections.h>
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#include "board.h"
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#ifdef CONFIG_PRINTK
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#include <misc/printk.h>
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#define PRINTK(...) printk(__VA_ARGS__)
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#else
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#define PRINTK(...)
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#endif
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#ifdef CONFIG_MICROKERNEL
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extern void _TaskAbort(void);
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static inline void nonEssentialTaskAbort(void)
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{
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PRINTK("Fatal fault in task ! Aborting task.\n");
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_TaskAbort();
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}
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#define NON_ESSENTIAL_TASK_ABORT() nonEssentialTaskAbort()
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#else
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#define NON_ESSENTIAL_TASK_ABORT() \
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do {/* nothing */ \
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} while ((0))
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#endif
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/*******************************************************************************
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*
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* _SysFatalErrorHandler - fatal error handler
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*
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* This routine implements the corrective action to be taken when the system
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* detects a fatal error.
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*
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* This sample implementation attempts to abort the current context and allow
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* the system to continue executing, which may permit the system to continue
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* functioning with degraded capabilities.
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*
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* System designers may wish to enhance or substitute this sample
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* implementation to take other actions, such as logging error (or debug)
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* information to a persistent repository and/or rebooting the system.
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*
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* RETURNS: N/A
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*
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* \NOMANUAL
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*/
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void _SysFatalErrorHandler(
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unsigned int reason, /* fatal error reason */
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const NANO_ESF * pEsf /* pointer to exception stack frame */
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)
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{
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nano_context_type_t curCtx = context_type_get();
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ARG_UNUSED(reason);
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ARG_UNUSED(pEsf);
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if ((curCtx == NANO_CTX_ISR) || _context_essential_check(NULL)) {
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PRINTK("Fatal fault in %s ! Spinning...\n",
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NANO_CTX_ISR == curCtx
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? "ISR"
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: NANO_CTX_FIBER == curCtx ? "essential fiber"
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: "essential task");
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for (;;)
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; /* spin forever */
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}
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if (NANO_CTX_FIBER == curCtx) {
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PRINTK("Fatal fault in fiber ! Aborting fiber.\n");
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fiber_abort();
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return;
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}
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NON_ESSENTIAL_TASK_ABORT();
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}
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