2ace19ede8
The ESF was built using the 'alias' names of the GPRs (a1, lr, pc, etc) rather than their 'real' name (rN). Change-Id: I49cae5e94869a79a3165dc7f2347d8cec39dbf67 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
109 lines
3 KiB
C
109 lines
3 KiB
C
/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file
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* @brief Nanokernel fatal error handler for ARM Cortex-M
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*
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* This module provides the _NanoFatalErrorHandler() routine for ARM Cortex-M.
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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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#ifdef CONFIG_PRINTK
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#include <misc/printk.h>
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#define PR_EXC(...) printk(__VA_ARGS__)
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#else
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#define PR_EXC(...)
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#endif /* CONFIG_PRINTK */
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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}, /* r0/a1 */
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{0xdeaddead}, /* r1/a2 */
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{0xdeaddead}, /* r2/a3 */
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{0xdeaddead}, /* r3/a4 */
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{0xdeaddead}, /* r12/ip */
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{0xdeaddead}, /* r14/lr */
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{0xdeaddead}, /* r15/pc */
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0xdeaddead, /* xpsr */
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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 fatal error conditions are detected by software
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* and is responsible only for reporting the error. Once reported, it then
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* invokes the user provided routine _SysFatalErrorHandler() which is
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* responsible for implementing the error handling policy.
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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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* @param reason the reason that the handler was called
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* @param pEsf pointer to the exception stack frame
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*
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* @return This function does not return.
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*/
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FUNC_NORETURN void _NanoFatalErrorHandler(unsigned int reason,
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const NANO_ESF *pEsf)
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{
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switch (reason) {
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case _NANO_ERR_INVALID_TASK_EXIT:
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PR_EXC("***** 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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PR_EXC("***** 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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PR_EXC("**** Kernel Allocation Failure! ****\n");
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break;
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default:
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PR_EXC("**** Unknown Fatal Error %d! ****\n", reason);
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break;
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}
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PR_EXC("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->pc);
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/*
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* Now that the error has been reported, call the user implemented
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* policy
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* to respond to the error. The decisions as to what responses are
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* appropriate to the various errors are something the customer must
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* decide.
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*/
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_SysFatalErrorHandler(reason, pEsf);
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for (;;)
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;
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}
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