/**************************************************************************** * arch/arm/src/armv7-m/up_memfault.c * * Copyright (C) 2011, 2013 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #include "up_arch.h" #include "nvic.h" #include "up_internal.h" /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ #undef DEBUG_MEMFAULTS /* Define to debug memory management faults */ #ifdef DEBUG_MEMFAULTS # define mferr(format, ...) _alert(format, ##__VA_ARGS__) # define mfinfo(format, ...) _alert(format, ##__VA_ARGS__) #else # define mferr(x...) # define mfinfo(x...) #endif /**************************************************************************** * 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, FAR void *arg) { /* Dump some memory management fault info */ (void)up_irq_save(); _alert("PANIC!!! Memory Management Fault:\n"); mfinfo(" IRQ: %d context: %p\n", irq, regs); _alert(" CFAULTS: %08x MMFAR: %08x\n", getreg32(NVIC_CFAULTS), getreg32(NVIC_MEMMANAGE_ADDR)); mfinfo(" BASEPRI: %08x PRIMASK: %08x IPSR: %08x CONTROL: %08x\n", getbasepri(), getprimask(), getipsr(), getcontrol()); mfinfo(" 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]); mfinfo(" 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 mfinfo(" xPSR: %08x BASEPRI: %08x EXC_RETURN: %08x (saved)\n", CURRENT_REGS[REG_XPSR], CURRENT_REGS[REG_BASEPRI], CURRENT_REGS[REG_EXC_RETURN]); # else mfinfo(" xPSR: %08x BASEPRI: %08x (saved)\n", CURRENT_REGS[REG_XPSR], CURRENT_REGS[REG_BASEPRI]); # endif #else # ifdef REG_EXC_RETURN mfinfo(" xPSR: %08x PRIMASK: %08x EXC_RETURN: %08x (saved)\n", CURRENT_REGS[REG_XPSR], CURRENT_REGS[REG_PRIMASK], CURRENT_REGS[REG_EXC_RETURN]); # else mfinfo(" xPSR: %08x PRIMASK: %08x (saved)\n", CURRENT_REGS[REG_XPSR], CURRENT_REGS[REG_PRIMASK]); # endif #endif PANIC(); return OK; /* Won't get here */ }