f0c357cd5a
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5547 42af7a65-404d-4744-a932-0658087f49c3
153 lines
5.6 KiB
C
153 lines
5.6 KiB
C
/****************************************************************************
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* arch/arm/src/armv7-m/up_hardfault.c
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*
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* Copyright (C) 2009, 2013 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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#include <stdint.h>
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#include <string.h>
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#include <assert.h>
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#include <debug.h>
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#include <arch/irq.h>
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#include "up_arch.h"
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#include "os_internal.h"
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#include "nvic.h"
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#include "up_internal.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* If CONFIG_ARMV7M_USEBASEPRI=n, then debug output from this file may
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* interfere with context switching!
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*/
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#ifdef CONFIG_DEBUG_HARDFAULT
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# define hfdbg(format, arg...) lldbg(format, ##arg)
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#else
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# define hfdbg(x...)
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#endif
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#define INSN_SVC0 0xdf00 /* insn: svc 0 */
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_hardfault
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*
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* Description:
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* This is Hard Fault exception handler. It also catches SVC call
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* exceptions that are performed in bad contexts.
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*
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****************************************************************************/
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int up_hardfault(int irq, FAR void *context)
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{
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#if defined(CONFIG_DEBUG_HARDFAULT) || !defined(CONFIG_ARMV7M_USEBASEPRI)
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uint32_t *regs = (uint32_t*)context;
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#endif
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/* Get the value of the program counter where the fault occurred */
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#ifndef CONFIG_ARMV7M_USEBASEPRI
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uint16_t *pc = (uint16_t*)regs[REG_PC] - 1;
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if ((void*)pc >= (void*)&_stext && (void*)pc < (void*)&_etext)
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{
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/* Fetch the instruction that caused the Hard fault */
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uint16_t insn = *pc;
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hfdbg(" PC: %p INSN: %04x\n", pc, insn);
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/* If this was the instruction 'svc 0', then forward processing
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* to the SVCall handler
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*/
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if (insn == INSN_SVC0)
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{
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hfdbg("Forward SVCall\n");
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return up_svcall(irq, context);
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}
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}
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#endif
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/* Dump some hard fault info */
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hfdbg("\nHard Fault:\n");
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hfdbg(" IRQ: %d regs: %p\n", irq, regs);
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hfdbg(" BASEPRI: %08x PRIMASK: %08x IPSR: %08x\n",
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getbasepri(), getprimask(), getipsr());
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hfdbg(" CFAULTS: %08x HFAULTS: %08x DFAULTS: %08x BFAULTADDR: %08x AFAULTS: %08x\n",
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getreg32(NVIC_CFAULTS), getreg32(NVIC_HFAULTS),
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getreg32(NVIC_DFAULTS), getreg32(NVIC_BFAULT_ADDR),
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getreg32(NVIC_AFAULTS));
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hfdbg(" R0: %08x %08x %08x %08x %08x %08x %08x %08x\n",
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regs[REG_R0], regs[REG_R1], regs[REG_R2], regs[REG_R3],
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regs[REG_R4], regs[REG_R5], regs[REG_R6], regs[REG_R7]);
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hfdbg(" R8: %08x %08x %08x %08x %08x %08x %08x %08x\n",
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regs[REG_R8], regs[REG_R9], regs[REG_R10], regs[REG_R11],
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regs[REG_R12], regs[REG_R13], regs[REG_R14], regs[REG_R15]);
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#ifdef CONFIG_ARMV7M_USEBASEPRI
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hfdbg(" xPSR: %08x BASEPRI: %08x (saved)\n",
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current_regs[REG_XPSR], current_regs[REG_BASEPRI]);
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#else
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hfdbg(" xPSR: %08x PRIMASK: %08x (saved)\n",
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current_regs[REG_XPSR], current_regs[REG_PRIMASK]);
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#endif
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(void)irqsave();
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lldbg("PANIC!!! Hard fault: %08x\n", getreg32(NVIC_HFAULTS));
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PANIC(OSERR_UNEXPECTEDISR);
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return OK;
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}
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