90 lines
3.3 KiB
C
90 lines
3.3 KiB
C
/****************************************************************************
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* arch/arm/src/armv7-r/arm_prefetchabort.c
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*
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* Copyright (C) 2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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/* Output debug info if stack dump is selected -- even if debug is not
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* selected.
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*/
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#ifdef CONFIG_ARCH_STACKDUMP
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# undef CONFIG_DEBUG
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# undef CONFIG_DEBUG_VERBOSE
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# define CONFIG_DEBUG 1
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# define CONFIG_DEBUG_VERBOSE 1
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#endif
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#include <stdint.h>
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#include <debug.h>
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#include <nuttx/irq.h>
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#include "sched/sched.h"
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#include "up_internal.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: arm_prefetchabort
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*
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* Description;
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* This is the prefetch abort exception handler. The ARM prefetch abort
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* exception occurs when a memory fault is detected during an an
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* instruction fetch.
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*
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****************************************************************************/
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uint32_t *arm_prefetchabort(uint32_t *regs, uint32_t ifar, uint32_t ifsr)
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{
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/* Save the saved processor context in current_regs where it can be accessed
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* for register dumps and possibly context switching.
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*/
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current_regs = regs;
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/* Crash -- possibly showing diagnostic debug information. */
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lldbg("Prefetch abort. PC: %08x IFAR: %08x IFSR: %08x\n",
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regs[REG_PC], ifar, ifsr);
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PANIC();
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return regs; /* To keep the compiler happy */
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}
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