65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
/****************************************************************************
|
|
* arch/arm/src/armv7-r/arm_prefetchabort.c
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdint.h>
|
|
#include <assert.h>
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/irq.h>
|
|
|
|
#include "sched/sched.h"
|
|
#include "arm_internal.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: arm_prefetchabort
|
|
*
|
|
* Description:
|
|
* This is the prefetch abort exception handler. The ARM prefetch abort
|
|
* exception occurs when a memory fault is detected during an an
|
|
* instruction fetch.
|
|
*
|
|
****************************************************************************/
|
|
|
|
uint32_t *arm_prefetchabort(uint32_t *regs, uint32_t ifar, uint32_t ifsr)
|
|
{
|
|
/* Save the saved processor context in CURRENT_REGS where it can be
|
|
* accessed for register dumps and possibly context switching.
|
|
*/
|
|
|
|
CURRENT_REGS = regs;
|
|
|
|
/* Crash -- possibly showing diagnostic debug information. */
|
|
|
|
_alert("Prefetch abort. PC: %08x IFAR: %08x IFSR: %08x\n",
|
|
regs[REG_PC], ifar, ifsr);
|
|
PANIC();
|
|
return regs; /* To keep the compiler happy */
|
|
}
|