136 lines
3.9 KiB
C
136 lines
3.9 KiB
C
/* fatal.c - nanokernel fatal error handler */
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/*
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* Copyright (c) 2013-2014 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 _NanoFatalErrorHandler() routine.
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*/
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#include <toolchain.h>
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#include <sections.h>
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#include <nanokernel.h>
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#include <nano_private.h>
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#include <misc/printk.h>
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/*
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* Define a default ESF for use with _NanoFatalErrorHandler() in the event
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* the caller does not have a NANO_ESF to pass
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*/
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const NANO_ESF _default_esf = {
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0xdeaddead, /* CR2 */
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#ifdef CONFIG_GDB_INFO
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0xdeaddead, /* EBP */
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0xdeaddead, /* EBX */
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0xdeaddead, /* ESI */
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0xdeaddead, /* EDI */
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#endif /* CONFIG_GDB_INFO */
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0xdeaddead, /* EDX */
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0xdeaddead, /* ECX */
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0xdeaddead, /* EAX */
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0xdeaddead, /* error code */
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0xdeaddead, /* EIP */
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0xdeaddead, /* CS */
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0xdeaddead, /* EFLAGS */
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0xdeaddead, /* ESP */
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0xdeaddead /* SS */
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};
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/**
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*
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* @brief Nanokernel fatal error handler
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*
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* This routine is called when a fatal error condition is detected by either
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* hardware or software.
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*
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* The caller is expected to always provide a usable ESF. In the event that the
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* fatal error does not have a hardware generated ESF, the caller should either
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* create its own or use a pointer to the global default ESF <_default_esf>.
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*
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* @return This function does not return.
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*
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* \NOMANUAL
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*/
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FUNC_NORETURN void _NanoFatalErrorHandler(
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unsigned int reason, /* reason that handler was called */
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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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#ifdef CONFIG_PRINTK
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/* Display diagnostic information about the error */
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switch (reason) {
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case _NANO_ERR_SPURIOUS_INT:
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printk("***** Unhandled exception/interrupt occurred! "
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"*****\n");
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break;
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case _NANO_ERR_INVALID_TASK_EXIT:
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printk("***** Invalid Exit Software Error! *****\n");
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break;
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#if defined(CONFIG_STACK_CANARIES)
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case _NANO_ERR_STACK_CHK_FAIL:
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printk("***** Stack Check Fail! *****\n");
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break;
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#endif /* CONFIG_STACK_CANARIES */
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case _NANO_ERR_ALLOCATION_FAIL:
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printk("**** Kernel Allocation Failure! ****\n");
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break;
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default:
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printk("**** Unknown Fatal Error %d! ****\n", reason);
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break;
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}
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printk("Current thread ID = 0x%x\n"
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"Faulting instruction address = 0x%x\n",
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sys_thread_self_get(),
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pEsf->eip);
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#endif /* CONFIG_PRINTK */
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/*
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* Error was fatal to a kernel task or a fiber; invoke the system
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* fatal error handling policy defined for the platform.
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*/
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_SysFatalErrorHandler(reason, pEsf);
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}
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