Diff: source/daplink/HardFault_Handler.c

Revision:

0:01f31e923fe2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/daplink/HardFault_Handler.c	Tue Apr 07 12:55:42 2020 +0200
@@ -0,0 +1,78 @@
+/**
+ * @file    main.c
+ * @brief   Entry point for interface program logic
+ *
+ * DAPLink Interface Firmware
+ * Copyright (c) 2009-2018, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed 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.
+ */
+
+
+#include "settings.h"
+#include "util.h"
+#include "cortex_m.h"
+
+register unsigned int _psp __asm("psp");
+register unsigned int _msp __asm("msp");
+register unsigned int _lr __asm("lr");
+register unsigned int _control __asm("control");
+void HardFault_Handler()
+{
+//hexdump logic on hardfault
+    uint32_t stk_ptr;
+    uint32_t * stack = (uint32_t *)_msp;
+    
+    if ((_lr & 0xF) == 0xD) { //process stack
+        stack = (uint32_t *)_psp;
+    }
+
+    //calculate stack ptr before fault
+    stk_ptr = (uint32_t)stack + 0x20;
+    if ((stack[7] & 0x200) != 0) { //xpsr bit 9 align
+        stk_ptr += 0x4;
+    }
+    if ((_lr & 0x10) == 0) { //fp
+        stk_ptr += 0x48;
+    }
+    
+    config_ram_add_hexdump(_lr);  //EXC_RETURN
+    config_ram_add_hexdump(_psp);
+    config_ram_add_hexdump(_msp);
+    config_ram_add_hexdump(_control);
+    config_ram_add_hexdump(stk_ptr); //SP
+    config_ram_add_hexdump(stack[5]);  //LR
+    config_ram_add_hexdump(stack[6]);  //PC
+    config_ram_add_hexdump(stack[7]);  //xPSR 
+
+#ifndef __CORTEX_M
+#error __CORTEX_M not defined!!
+#else
+
+#if (__CORTEX_M > 0x00)
+    config_ram_add_hexdump(SCB->HFSR);
+    config_ram_add_hexdump(SCB->CFSR);
+    config_ram_add_hexdump(SCB->DFSR);
+    config_ram_add_hexdump(SCB->AFSR);
+    config_ram_add_hexdump(SCB->MMFAR);
+    config_ram_add_hexdump(SCB->BFAR);
+#endif  
+
+#endif //#ifndef __CORTEX_M
+
+    util_assert(0);
+    SystemReset();
+
+    while (1); // Wait for reset
+}