1 files changed, 110 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/armv6-m/up_memfault.c b/nuttx/arch/arm/src/armv6-m/up_memfault.c
new file mode 100644
index 000000000..d04a9acf8
--- /dev/null
+++ b/nuttx/arch/arm/src/armv6-m/up_memfault.c
@@ -0,0 +1,110 @@
+/****************************************************************************
+ * arch/arm/src/armv6-m/up_memfault.c
+ *
+ *   Copyright (C) 2013 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("  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]);
+  mfdbg("  PSR=%08x\n", regs[REG_XPSR]);
+
+  PANIC(OSERR_UNEXPECTEDISR);
+  return OK;
+}