nuttx/arch/arm/src/armv7-m/up_memfault.c
patacongo 3c141dd850 If the PRIMASK is used to disable interrupts, then additional logic is required to handle hard faults in the kernel build
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5761 42af7a65-404d-4744-a932-0658087f49c3
2013-03-19 16:11:23 +00:00

132 lines
5.1 KiB
C

/****************************************************************************
* arch/arm/src/armv7-m/up_memfault.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <assert.h>
#include <debug.h>
#include <arch/irq.h>
#include "up_arch.h"
#include "os_internal.h"
#include "nvic.h"
#include "up_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#undef DEBUG_MEMFAULTS /* Define to debug memory management faults */
#ifdef DEBUG_MEMFAULTS
# define mfdbg(format, arg...) lldbg(format, ##arg)
#else
# define mfdbg(x...)
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_memfault
*
* Description:
* This is Memory Management Fault exception handler. Normally we get here
* when the Cortex M3 MPU is enabled and an MPU fault is detected. However,
* I understand that there are other error conditions that can also generate
* memory management faults.
*
****************************************************************************/
int up_memfault(int irq, FAR void *context)
{
/* Dump some memory management fault info */
(void)irqsave();
lldbg("PANIC!!! Memory Management Fault:\n");
mfdbg(" IRQ: %d context: %p\n", irq, regs);
lldbg(" CFAULTS: %08x MMFAR: %08x\n",
getreg32(NVIC_CFAULTS), getreg32(NVIC_MEMMANAGE_ADDR));
mfdbg(" BASEPRI: %08x PRIMASK: %08x IPSR: %08x CONTROL: %08x\n",
getbasepri(), getprimask(), getipsr(), getcontrol());
mfdbg(" R0: %08x %08x %08x %08x %08x %08x %08x %08x\n",
regs[REG_R0], regs[REG_R1], regs[REG_R2], regs[REG_R3],
regs[REG_R4], regs[REG_R5], regs[REG_R6], regs[REG_R7]);
mfdbg(" R8: %08x %08x %08x %08x %08x %08x %08x %08x\n",
regs[REG_R8], regs[REG_R9], regs[REG_R10], regs[REG_R11],
regs[REG_R12], regs[REG_R13], regs[REG_R14], regs[REG_R15]);
#ifdef CONFIG_ARMV7M_USEBASEPRI
# ifdef REG_EXC_RETURN
mfdbg(" xPSR: %08x BASEPRI: %08x EXC_RETURN: %08x (saved)\n",
current_regs[REG_XPSR], current_regs[REG_BASEPRI],
current_regs[REG_EXC_RETURN]);
# else
mfdbg(" xPSR: %08x BASEPRI: %08x (saved)\n",
current_regs[REG_XPSR], current_regs[REG_BASEPRI]);
# endif
#else
# ifdef REG_EXC_RETURN
mfdbg(" xPSR: %08x PRIMASK: %08x EXC_RETURN: %08x (saved)\n",
current_regs[REG_XPSR], current_regs[REG_PRIMASK],
current_regs[REG_EXC_RETURN]);
# else
mfdbg(" xPSR: %08x PRIMASK: %08x (saved)\n",
current_regs[REG_XPSR], current_regs[REG_PRIMASK]);
# endif
#endif
PANIC(OSERR_UNEXPECTEDISR);
return OK;
}