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+/*
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+ * This file is part of the CmBacktrace Library.
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+ *
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+ * Copyright (c) 2016-2019, Armink, <armink.ztl@gmail.com>
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining
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+ * a copy of this software and associated documentation files (the
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+ * 'Software'), to deal in the Software without restriction, including
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+ * without limitation the rights to use, copy, modify, merge, publish,
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+ * distribute, sublicense, and/or sell copies of the Software, and to
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+ * permit persons to whom the Software is furnished to do so, subject to
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+ * the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be
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+ * included in all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
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+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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+ *
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+ * Function: Initialize function and other general function.
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+ * Created on: 2016-12-15
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+ */
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+
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+#include <cm_backtrace.h>
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+#include <stdbool.h>
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+#include <string.h>
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+#include <stdio.h>
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+
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+#if __STDC_VERSION__ < 199901L
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+ #error "must be C99 or higher. try to add '-std=c99' to compile parameters"
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+#endif
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+
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+
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+#if defined(__CC_ARM)
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+ #define SECTION_START(_name_) _name_##$$Base
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+ #define SECTION_END(_name_) _name_##$$Limit
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+ #define IMAGE_SECTION_START(_name_) Image$$##_name_##$$Base
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+ #define IMAGE_SECTION_END(_name_) Image$$##_name_##$$Limit
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+ #define CSTACK_BLOCK_START(_name_) SECTION_START(_name_)
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+ #define CSTACK_BLOCK_END(_name_) SECTION_END(_name_)
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+ #define CODE_SECTION_START(_name_) IMAGE_SECTION_START(_name_)
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+ #define CODE_SECTION_END(_name_) IMAGE_SECTION_END(_name_)
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+
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+ extern const int CSTACK_BLOCK_START(CMB_CSTACK_BLOCK_NAME);
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+ extern const int CSTACK_BLOCK_END(CMB_CSTACK_BLOCK_NAME);
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+ extern const int CODE_SECTION_START(CMB_CODE_SECTION_NAME);
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+ extern const int CODE_SECTION_END(CMB_CODE_SECTION_NAME);
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+#elif defined(__ICCARM__)
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+ #pragma section=CMB_CSTACK_BLOCK_NAME
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+ #pragma section=CMB_CODE_SECTION_NAME
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+#elif defined(__GNUC__)
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+ extern const int CMB_CSTACK_BLOCK_START;
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+ extern const int CMB_CSTACK_BLOCK_END;
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+ extern const int CMB_CODE_SECTION_START;
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+ extern const int CMB_CODE_SECTION_END;
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+#else
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+ #error "not supported compiler"
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+#endif
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+
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+enum {
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+ PRINT_MAIN_STACK_CFG_ERROR,
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+ PRINT_FIRMWARE_INFO,
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+ PRINT_ASSERT_ON_THREAD,
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+ PRINT_ASSERT_ON_HANDLER,
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+ PRINT_THREAD_STACK_INFO,
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+ PRINT_MAIN_STACK_INFO,
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+ PRINT_THREAD_STACK_OVERFLOW,
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+ PRINT_MAIN_STACK_OVERFLOW,
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+ PRINT_CALL_STACK_INFO,
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+ PRINT_CALL_STACK_ERR,
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+ PRINT_FAULT_ON_THREAD,
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+ PRINT_FAULT_ON_HANDLER,
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+ PRINT_REGS_TITLE,
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+ PRINT_HFSR_VECTBL,
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+ PRINT_MFSR_IACCVIOL,
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+ PRINT_MFSR_DACCVIOL,
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+ PRINT_MFSR_MUNSTKERR,
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+ PRINT_MFSR_MSTKERR,
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+ PRINT_MFSR_MLSPERR,
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+ PRINT_BFSR_IBUSERR,
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+ PRINT_BFSR_PRECISERR,
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+ PRINT_BFSR_IMPREISERR,
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+ PRINT_BFSR_UNSTKERR,
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+ PRINT_BFSR_STKERR,
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+ PRINT_BFSR_LSPERR,
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+ PRINT_UFSR_UNDEFINSTR,
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+ PRINT_UFSR_INVSTATE,
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+ PRINT_UFSR_INVPC,
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+ PRINT_UFSR_NOCP,
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+ PRINT_UFSR_UNALIGNED,
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+ PRINT_UFSR_DIVBYZERO0,
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+ PRINT_DFSR_HALTED,
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+ PRINT_DFSR_BKPT,
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+ PRINT_DFSR_DWTTRAP,
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+ PRINT_DFSR_VCATCH,
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+ PRINT_DFSR_EXTERNAL,
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+ PRINT_MMAR,
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+ PRINT_BFAR,
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+};
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+
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+static const char * const print_info[] = {
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+#if (CMB_PRINT_LANGUAGE == CMB_PRINT_LANGUAGE_ENGLISH)
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+ [PRINT_MAIN_STACK_CFG_ERROR] = "ERROR: Unable to get the main stack information, please check the configuration of the main stack",
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+ [PRINT_FIRMWARE_INFO] = "Firmware name: %s, hardware version: %s, software version: %s",
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+ [PRINT_ASSERT_ON_THREAD] = "Assert on thread %s",
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+ [PRINT_ASSERT_ON_HANDLER] = "Assert on interrupt or bare metal(no OS) environment",
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+ [PRINT_THREAD_STACK_INFO] = "===== Thread stack information =====",
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+ [PRINT_MAIN_STACK_INFO] = "====== Main stack information ======",
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+ [PRINT_THREAD_STACK_OVERFLOW] = "Error: Thread stack(%08x) was overflow",
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+ [PRINT_MAIN_STACK_OVERFLOW] = "Error: Main stack(%08x) was overflow",
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+ [PRINT_CALL_STACK_INFO] = "Show more call stack info by run: addr2line -e %s%s -a -f %.*s",
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+ [PRINT_CALL_STACK_ERR] = "Dump call stack has an error",
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+ [PRINT_FAULT_ON_THREAD] = "Fault on thread %s",
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+ [PRINT_FAULT_ON_HANDLER] = "Fault on interrupt or bare metal(no OS) environment",
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+ [PRINT_REGS_TITLE] = "=================== Registers information ====================",
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+ [PRINT_HFSR_VECTBL] = "Hard fault is caused by failed vector fetch",
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+ [PRINT_MFSR_IACCVIOL] = "Memory management fault is caused by instruction access violation",
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+ [PRINT_MFSR_DACCVIOL] = "Memory management fault is caused by data access violation",
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+ [PRINT_MFSR_MUNSTKERR] = "Memory management fault is caused by unstacking error",
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+ [PRINT_MFSR_MSTKERR] = "Memory management fault is caused by stacking error",
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+ [PRINT_MFSR_MLSPERR] = "Memory management fault is caused by floating-point lazy state preservation",
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+ [PRINT_BFSR_IBUSERR] = "Bus fault is caused by instruction access violation",
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+ [PRINT_BFSR_PRECISERR] = "Bus fault is caused by precise data access violation",
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+ [PRINT_BFSR_IMPREISERR] = "Bus fault is caused by imprecise data access violation",
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+ [PRINT_BFSR_UNSTKERR] = "Bus fault is caused by unstacking error",
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+ [PRINT_BFSR_STKERR] = "Bus fault is caused by stacking error",
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+ [PRINT_BFSR_LSPERR] = "Bus fault is caused by floating-point lazy state preservation",
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+ [PRINT_UFSR_UNDEFINSTR] = "Usage fault is caused by attempts to execute an undefined instruction",
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+ [PRINT_UFSR_INVSTATE] = "Usage fault is caused by attempts to switch to an invalid state (e.g., ARM)",
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+ [PRINT_UFSR_INVPC] = "Usage fault is caused by attempts to do an exception with a bad value in the EXC_RETURN number",
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+ [PRINT_UFSR_NOCP] = "Usage fault is caused by attempts to execute a coprocessor instruction",
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+ [PRINT_UFSR_UNALIGNED] = "Usage fault is caused by indicates that an unaligned access fault has taken place",
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+ [PRINT_UFSR_DIVBYZERO0] = "Usage fault is caused by Indicates a divide by zero has taken place (can be set only if DIV_0_TRP is set)",
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+ [PRINT_DFSR_HALTED] = "Debug fault is caused by halt requested in NVIC",
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+ [PRINT_DFSR_BKPT] = "Debug fault is caused by BKPT instruction executed",
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+ [PRINT_DFSR_DWTTRAP] = "Debug fault is caused by DWT match occurred",
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+ [PRINT_DFSR_VCATCH] = "Debug fault is caused by Vector fetch occurred",
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+ [PRINT_DFSR_EXTERNAL] = "Debug fault is caused by EDBGRQ signal asserted",
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+ [PRINT_MMAR] = "The memory management fault occurred address is %08x",
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+ [PRINT_BFAR] = "The bus fault occurred address is %08x",
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+#elif (CMB_PRINT_LANGUAGE == CMB_PRINT_LANGUAGE_CHINESE)
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+ [PRINT_MAIN_STACK_CFG_ERROR] = "��������ȡ��ջ��Ϣ��������ջ���������",
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+ [PRINT_FIRMWARE_INFO] = "�̼����ƣ�%s��Ӳ���汾�ţ�%s�������汾�ţ�%s",
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+ [PRINT_ASSERT_ON_THREAD] = "���߳�(%s)�з�������",
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+ [PRINT_ASSERT_ON_HANDLER] = "���жϻ���������·�������",
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+ [PRINT_THREAD_STACK_INFO] = "=========== �̶߳�ջ��Ϣ ===========",
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+ [PRINT_MAIN_STACK_INFO] = "============ ����ջ��Ϣ ============",
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+ [PRINT_THREAD_STACK_OVERFLOW] = "�����߳�ջ(%08x)�������",
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+ [PRINT_MAIN_STACK_OVERFLOW] = "������ջ(%08x)�������",
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+ [PRINT_CALL_STACK_INFO] = "�鿴���ຯ������ջ��Ϣ�������У�addr2line -e %s%s -a -f %.*s",
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+ [PRINT_CALL_STACK_ERR] = "��ȡ��������ջʧ��",
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+ [PRINT_FAULT_ON_THREAD] = "���߳�(%s)�з��������쳣",
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+ [PRINT_FAULT_ON_HANDLER] = "���жϻ���������·��������쳣",
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+ [PRINT_REGS_TITLE] = "========================= �Ĵ�����Ϣ =========================",
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+ [PRINT_HFSR_VECTBL] = "����Ӳ����ԭ��ȡ�ж�����ʱ����",
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+ [PRINT_MFSR_IACCVIOL] = "�����洢����������ԭ����ͼ�Ӳ��������ʵ�����ȡָ��",
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+ [PRINT_MFSR_DACCVIOL] = "�����洢����������ԭ����ͼ�Ӳ��������ʵ��������д����",
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+ [PRINT_MFSR_MUNSTKERR] = "�����洢����������ԭ��ջʱ��ͼ���ʲ�������������",
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+ [PRINT_MFSR_MSTKERR] = "�����洢����������ԭ����ջʱ��ͼ���ʲ�������������",
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+ [PRINT_MFSR_MLSPERR] = "�����洢����������ԭ���Ա��渡��״̬ʱ��������",
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+ [PRINT_BFSR_IBUSERR] = "�������ߴ���ԭ��ָ�����ߴ���",
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+ [PRINT_BFSR_PRECISERR] = "�������ߴ���ԭ��ȷ���������ߴ���",
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+ [PRINT_BFSR_IMPREISERR] = "�������ߴ���ԭ����ȷ���������ߴ���",
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+ [PRINT_BFSR_UNSTKERR] = "�������ߴ���ԭ��ջʱ��������",
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+ [PRINT_BFSR_STKERR] = "�������ߴ���ԭ����ջʱ��������",
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+ [PRINT_BFSR_LSPERR] = "�������ߴ���ԭ���Ա��渡��״̬ʱ��������",
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+ [PRINT_UFSR_UNDEFINSTR] = "�����÷�����ԭ����ͼִ��δ����ָ��",
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+ [PRINT_UFSR_INVSTATE] = "�����÷�����ԭ����ͼ�л��� ARM ״̬",
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+ [PRINT_UFSR_INVPC] = "�����÷�����ԭ����Ч���쳣������",
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+ [PRINT_UFSR_NOCP] = "�����÷�����ԭ����ͼִ��Э������ָ��",
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+ [PRINT_UFSR_UNALIGNED] = "�����÷�����ԭ����ͼִ�зǶ������",
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+ [PRINT_UFSR_DIVBYZERO0] = "�����÷�����ԭ����ͼִ�г� 0 ����",
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+ [PRINT_DFSR_HALTED] = "�������Դ���ԭ��NVIC ͣ������",
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+ [PRINT_DFSR_BKPT] = "�������Դ���ԭ��ִ�� BKPT ָ��",
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+ [PRINT_DFSR_DWTTRAP] = "�������Դ���ԭ�����ݼ���ƥ��",
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+ [PRINT_DFSR_VCATCH] = "�������Դ���ԭ������������",
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+ [PRINT_DFSR_EXTERNAL] = "�������Դ���ԭ���ⲿ��������",
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+ [PRINT_MMAR] = "�����洢����������ĵ�ַ��%08x",
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+ [PRINT_BFAR] = "�������ߴ���ĵ�ַ��%08x",
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+#else
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+ #error "CMB_PRINT_LANGUAGE defined error in 'cmb_cfg.h'"
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+#endif
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+};
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+
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+static char fw_name[CMB_NAME_MAX] = {0};
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+static char hw_ver[CMB_NAME_MAX] = {0};
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+static char sw_ver[CMB_NAME_MAX] = {0};
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+static uint32_t main_stack_start_addr = 0;
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+static size_t main_stack_size = 0;
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+static uint32_t code_start_addr = 0;
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+static size_t code_size = 0;
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+static bool init_ok = false;
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+static char call_stack_info[CMB_CALL_STACK_MAX_DEPTH * (8 + 1)] = { 0 };
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+static bool on_fault = false;
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+static bool stack_is_overflow = false;
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+static struct cmb_hard_fault_regs regs;
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+
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+#if (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M4) || (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M7)
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+static bool statck_has_fpu_regs = false;
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+#endif
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+
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+static bool on_thread_before_fault = false;
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+
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+/**
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+ * library initialize
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+ */
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+void cm_backtrace_init(const char *firmware_name, const char *hardware_ver, const char *software_ver) {
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+ strncpy(fw_name, firmware_name, CMB_NAME_MAX);
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+ strncpy(hw_ver, hardware_ver, CMB_NAME_MAX);
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+ strncpy(sw_ver, software_ver, CMB_NAME_MAX);
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+
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+#if defined(__CC_ARM)
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+ main_stack_start_addr = (uint32_t)&CSTACK_BLOCK_START(CMB_CSTACK_BLOCK_NAME);
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+ main_stack_size = (uint32_t)&CSTACK_BLOCK_END(CMB_CSTACK_BLOCK_NAME) - main_stack_start_addr;
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+ code_start_addr = (uint32_t)&CODE_SECTION_START(CMB_CODE_SECTION_NAME);
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+ code_size = (uint32_t)&CODE_SECTION_END(CMB_CODE_SECTION_NAME) - code_start_addr;
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+#elif defined(__ICCARM__)
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+ main_stack_start_addr = (uint32_t)__section_begin(CMB_CSTACK_BLOCK_NAME);
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+ main_stack_size = (uint32_t)__section_end(CMB_CSTACK_BLOCK_NAME) - main_stack_start_addr;
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+ code_start_addr = (uint32_t)__section_begin(CMB_CODE_SECTION_NAME);
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+ code_size = (uint32_t)__section_end(CMB_CODE_SECTION_NAME) - code_start_addr;
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+#elif defined(__GNUC__)
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+ main_stack_start_addr = (uint32_t)(&CMB_CSTACK_BLOCK_START);
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+ main_stack_size = (uint32_t)(&CMB_CSTACK_BLOCK_END) - main_stack_start_addr;
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+ code_start_addr = (uint32_t)(&CMB_CODE_SECTION_START);
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+ code_size = (uint32_t)(&CMB_CODE_SECTION_END) - code_start_addr;
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+#else
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+ #error "not supported compiler"
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+#endif
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+
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+ if (main_stack_size == 0) {
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+ cmb_println(print_info[PRINT_MAIN_STACK_CFG_ERROR]);
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+ return;
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+ }
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+
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+ init_ok = true;
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+}
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+
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+/**
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+ * print firmware information, such as: firmware name, hardware version, software version
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+ */
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+void cm_backtrace_firmware_info(void) {
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+ cmb_println(print_info[PRINT_FIRMWARE_INFO], fw_name, hw_ver, sw_ver);
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+}
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+
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+#ifdef CMB_USING_OS_PLATFORM
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+/**
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+ * Get current thread stack information
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+ *
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+ * @param sp stack current pointer
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+ * @param start_addr stack start address
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+ * @param size stack size
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+ */
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+static void get_cur_thread_stack_info(uint32_t sp, uint32_t *start_addr, size_t *size) {
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+ CMB_ASSERT(start_addr);
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+ CMB_ASSERT(size);
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+
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+#if (CMB_OS_PLATFORM_TYPE == CMB_OS_PLATFORM_RTT)
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+ *start_addr = (uint32_t) rt_thread_self()->stack_addr;
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+ *size = rt_thread_self()->stack_size;
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+#elif (CMB_OS_PLATFORM_TYPE == CMB_OS_PLATFORM_UCOSII)
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+ extern OS_TCB *OSTCBCur;
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+
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+ *start_addr = (uint32_t) OSTCBCur->OSTCBStkBottom;
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+ *size = OSTCBCur->OSTCBStkSize * sizeof(OS_STK);
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+#elif (CMB_OS_PLATFORM_TYPE == CMB_OS_PLATFORM_UCOSIII)
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+ extern OS_TCB *OSTCBCurPtr;
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+
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+ *start_addr = (uint32_t) OSTCBCurPtr->StkBasePtr;
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+ *size = OSTCBCurPtr->StkSize * sizeof(CPU_STK_SIZE);
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+#elif (CMB_OS_PLATFORM_TYPE == CMB_OS_PLATFORM_FREERTOS)
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+ *start_addr = (uint32_t)vTaskStackAddr();
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+ *size = vTaskStackSize() * sizeof( StackType_t );
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+#endif
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+}
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+
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+/**
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+ * Get current thread name
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+ */
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+static const char *get_cur_thread_name(void) {
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+#if (CMB_OS_PLATFORM_TYPE == CMB_OS_PLATFORM_RTT)
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+ return rt_thread_self()->name;
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+#elif (CMB_OS_PLATFORM_TYPE == CMB_OS_PLATFORM_UCOSII)
|
|
|
+ extern OS_TCB *OSTCBCur;
|
|
|
+
|
|
|
+#if OS_TASK_NAME_SIZE > 0 || OS_TASK_NAME_EN > 0
|
|
|
+ return (const char *)OSTCBCur->OSTCBTaskName;
|
|
|
+#else
|
|
|
+ return NULL;
|
|
|
+#endif /* OS_TASK_NAME_SIZE > 0 || OS_TASK_NAME_EN > 0 */
|
|
|
+
|
|
|
+#elif (CMB_OS_PLATFORM_TYPE == CMB_OS_PLATFORM_UCOSIII)
|
|
|
+ extern OS_TCB *OSTCBCurPtr;
|
|
|
+
|
|
|
+ return (const char *)OSTCBCurPtr->NamePtr;
|
|
|
+#elif (CMB_OS_PLATFORM_TYPE == CMB_OS_PLATFORM_FREERTOS)
|
|
|
+ return vTaskName();
|
|
|
+#endif
|
|
|
+}
|
|
|
+
|
|
|
+#endif /* CMB_USING_OS_PLATFORM */
|
|
|
+
|
|
|
+#ifdef CMB_USING_DUMP_STACK_INFO
|
|
|
+/**
|
|
|
+ * dump current stack information
|
|
|
+ */
|
|
|
+static void dump_stack(uint32_t stack_start_addr, size_t stack_size, uint32_t *stack_pointer) {
|
|
|
+ if (stack_is_overflow) {
|
|
|
+ if (on_thread_before_fault) {
|
|
|
+ cmb_println(print_info[PRINT_THREAD_STACK_OVERFLOW], stack_pointer);
|
|
|
+ } else {
|
|
|
+ cmb_println(print_info[PRINT_MAIN_STACK_OVERFLOW], stack_pointer);
|
|
|
+ }
|
|
|
+ if ((uint32_t) stack_pointer < stack_start_addr) {
|
|
|
+ stack_pointer = (uint32_t *) stack_start_addr;
|
|
|
+ } else if ((uint32_t) stack_pointer > stack_start_addr + stack_size) {
|
|
|
+ stack_pointer = (uint32_t *) (stack_start_addr + stack_size);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ cmb_println(print_info[PRINT_THREAD_STACK_INFO]);
|
|
|
+ for (; (uint32_t) stack_pointer < stack_start_addr + stack_size; stack_pointer++) {
|
|
|
+ cmb_println(" addr: %08x data: %08x", stack_pointer, *stack_pointer);
|
|
|
+ }
|
|
|
+ cmb_println("====================================");
|
|
|
+}
|
|
|
+#endif /* CMB_USING_DUMP_STACK_INFO */
|
|
|
+
|
|
|
+/* check the disassembly instruction is 'BL' or 'BLX' */
|
|
|
+static bool disassembly_ins_is_bl_blx(uint32_t addr) {
|
|
|
+ uint16_t ins1 = *((uint16_t *)addr);
|
|
|
+ uint16_t ins2 = *((uint16_t *)(addr + 2));
|
|
|
+
|
|
|
+#define BL_INS_MASK 0xF800
|
|
|
+#define BL_INS_HIGH 0xF800
|
|
|
+#define BL_INS_LOW 0xF000
|
|
|
+#define BLX_INX_MASK 0xFF00
|
|
|
+#define BLX_INX 0x4700
|
|
|
+
|
|
|
+ if ((ins2 & BL_INS_MASK) == BL_INS_HIGH && (ins1 & BL_INS_MASK) == BL_INS_LOW) {
|
|
|
+ return true;
|
|
|
+ } else if ((ins2 & BLX_INX_MASK) == BLX_INX) {
|
|
|
+ return true;
|
|
|
+ } else {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * backtrace function call stack
|
|
|
+ *
|
|
|
+ * @param buffer call stack buffer
|
|
|
+ * @param size buffer size
|
|
|
+ * @param sp stack pointer
|
|
|
+ *
|
|
|
+ * @return depth
|
|
|
+ */
|
|
|
+size_t cm_backtrace_call_stack(uint32_t *buffer, size_t size, uint32_t sp) {
|
|
|
+ uint32_t stack_start_addr = main_stack_start_addr, pc;
|
|
|
+ size_t depth = 0, stack_size = main_stack_size;
|
|
|
+ bool regs_saved_lr_is_valid = false;
|
|
|
+
|
|
|
+ if (on_fault) {
|
|
|
+ if (!stack_is_overflow) {
|
|
|
+ /* first depth is PC */
|
|
|
+ buffer[depth++] = regs.saved.pc;
|
|
|
+ /* fix the LR address in thumb mode */
|
|
|
+ pc = regs.saved.lr - 1;
|
|
|
+ if ((pc >= code_start_addr) && (pc <= code_start_addr + code_size) && (depth < CMB_CALL_STACK_MAX_DEPTH)
|
|
|
+ && (depth < size)) {
|
|
|
+ buffer[depth++] = pc;
|
|
|
+ regs_saved_lr_is_valid = true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+#ifdef CMB_USING_OS_PLATFORM
|
|
|
+ /* program is running on thread before fault */
|
|
|
+ if (on_thread_before_fault) {
|
|
|
+ get_cur_thread_stack_info(sp, &stack_start_addr, &stack_size);
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ /* OS environment */
|
|
|
+ if (cmb_get_sp() == cmb_get_psp()) {
|
|
|
+ get_cur_thread_stack_info(sp, &stack_start_addr, &stack_size);
|
|
|
+ }
|
|
|
+#endif /* CMB_USING_OS_PLATFORM */
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ if (stack_is_overflow) {
|
|
|
+ if (sp < stack_start_addr) {
|
|
|
+ sp = stack_start_addr;
|
|
|
+ } else if (sp > stack_start_addr + stack_size) {
|
|
|
+ sp = stack_start_addr + stack_size;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* copy called function address */
|
|
|
+ for (; sp < stack_start_addr + stack_size; sp += sizeof(size_t)) {
|
|
|
+ /* the *sp value may be LR, so need decrease a word to PC */
|
|
|
+ pc = *((uint32_t *) sp) - sizeof(size_t);
|
|
|
+ /* the Cortex-M using thumb instruction, so the pc must be an odd number */
|
|
|
+ if (pc % 2 == 0) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ /* fix the PC address in thumb mode */
|
|
|
+ pc = *((uint32_t *) sp) - 1;
|
|
|
+ if ((pc >= code_start_addr) && (pc <= code_start_addr + code_size) && (depth < CMB_CALL_STACK_MAX_DEPTH)
|
|
|
+ /* check the the instruction before PC address is 'BL' or 'BLX' */
|
|
|
+ && disassembly_ins_is_bl_blx(pc - sizeof(size_t)) && (depth < size)) {
|
|
|
+ /* the second depth function may be already saved, so need ignore repeat */
|
|
|
+ if ((depth == 2) && regs_saved_lr_is_valid && (pc == buffer[1])) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ buffer[depth++] = pc;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return depth;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * dump function call stack
|
|
|
+ *
|
|
|
+ * @param sp stack pointer
|
|
|
+ */
|
|
|
+static void print_call_stack(uint32_t sp) {
|
|
|
+ size_t i, cur_depth = 0;
|
|
|
+ uint32_t call_stack_buf[CMB_CALL_STACK_MAX_DEPTH] = {0};
|
|
|
+
|
|
|
+ cur_depth = cm_backtrace_call_stack(call_stack_buf, CMB_CALL_STACK_MAX_DEPTH, sp);
|
|
|
+
|
|
|
+ for (i = 0; i < cur_depth; i++) {
|
|
|
+ sprintf(call_stack_info + i * (8 + 1), "%08lx", call_stack_buf[i]);
|
|
|
+ call_stack_info[i * (8 + 1) + 8] = ' ';
|
|
|
+ }
|
|
|
+
|
|
|
+ if (cur_depth) {
|
|
|
+ cmb_println(print_info[PRINT_CALL_STACK_INFO], fw_name, CMB_ELF_FILE_EXTENSION_NAME, cur_depth * (8 + 1),
|
|
|
+ call_stack_info);
|
|
|
+ } else {
|
|
|
+ cmb_println(print_info[PRINT_CALL_STACK_ERR]);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * backtrace for assert
|
|
|
+ *
|
|
|
+ * @param sp the stack pointer when on assert occurred
|
|
|
+ */
|
|
|
+void cm_backtrace_assert(uint32_t sp) {
|
|
|
+ CMB_ASSERT(init_ok);
|
|
|
+
|
|
|
+#ifdef CMB_USING_OS_PLATFORM
|
|
|
+ uint32_t cur_stack_pointer = cmb_get_sp();
|
|
|
+#endif
|
|
|
+
|
|
|
+ cmb_println("");
|
|
|
+ cm_backtrace_firmware_info();
|
|
|
+
|
|
|
+#ifdef CMB_USING_OS_PLATFORM
|
|
|
+ /* OS environment */
|
|
|
+ if (cur_stack_pointer == cmb_get_msp()) {
|
|
|
+ cmb_println(print_info[PRINT_ASSERT_ON_HANDLER]);
|
|
|
+
|
|
|
+#ifdef CMB_USING_DUMP_STACK_INFO
|
|
|
+ dump_stack(main_stack_start_addr, main_stack_size, (uint32_t *) sp);
|
|
|
+#endif /* CMB_USING_DUMP_STACK_INFO */
|
|
|
+
|
|
|
+ } else if (cur_stack_pointer == cmb_get_psp()) {
|
|
|
+ cmb_println(print_info[PRINT_ASSERT_ON_THREAD], get_cur_thread_name());
|
|
|
+
|
|
|
+#ifdef CMB_USING_DUMP_STACK_INFO
|
|
|
+ uint32_t stack_start_addr;
|
|
|
+ size_t stack_size;
|
|
|
+ get_cur_thread_stack_info(sp, &stack_start_addr, &stack_size);
|
|
|
+ dump_stack(stack_start_addr, stack_size, (uint32_t *) sp);
|
|
|
+#endif /* CMB_USING_DUMP_STACK_INFO */
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+#else
|
|
|
+
|
|
|
+ /* bare metal(no OS) environment */
|
|
|
+#ifdef CMB_USING_DUMP_STACK_INFO
|
|
|
+ dump_stack(main_stack_start_addr, main_stack_size, (uint32_t *) sp);
|
|
|
+#endif /* CMB_USING_DUMP_STACK_INFO */
|
|
|
+
|
|
|
+#endif /* CMB_USING_OS_PLATFORM */
|
|
|
+
|
|
|
+ print_call_stack(sp);
|
|
|
+}
|
|
|
+
|
|
|
+#if (CMB_CPU_PLATFORM_TYPE != CMB_CPU_ARM_CORTEX_M0)
|
|
|
+/**
|
|
|
+ * fault diagnosis then print cause of fault
|
|
|
+ */
|
|
|
+static void fault_diagnosis(void) {
|
|
|
+ if (regs.hfsr.bits.VECTBL) {
|
|
|
+ cmb_println(print_info[PRINT_HFSR_VECTBL]);
|
|
|
+ }
|
|
|
+ if (regs.hfsr.bits.FORCED) {
|
|
|
+ /* Memory Management Fault */
|
|
|
+ if (regs.mfsr.value) {
|
|
|
+ if (regs.mfsr.bits.IACCVIOL) {
|
|
|
+ cmb_println(print_info[PRINT_MFSR_IACCVIOL]);
|
|
|
+ }
|
|
|
+ if (regs.mfsr.bits.DACCVIOL) {
|
|
|
+ cmb_println(print_info[PRINT_MFSR_DACCVIOL]);
|
|
|
+ }
|
|
|
+ if (regs.mfsr.bits.MUNSTKERR) {
|
|
|
+ cmb_println(print_info[PRINT_MFSR_MUNSTKERR]);
|
|
|
+ }
|
|
|
+ if (regs.mfsr.bits.MSTKERR) {
|
|
|
+ cmb_println(print_info[PRINT_MFSR_MSTKERR]);
|
|
|
+ }
|
|
|
+
|
|
|
+#if (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M4) || (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M7)
|
|
|
+ if (regs.mfsr.bits.MLSPERR) {
|
|
|
+ cmb_println(print_info[PRINT_MFSR_MLSPERR]);
|
|
|
+ }
|
|
|
+#endif
|
|
|
+
|
|
|
+ if (regs.mfsr.bits.MMARVALID) {
|
|
|
+ if (regs.mfsr.bits.IACCVIOL || regs.mfsr.bits.DACCVIOL) {
|
|
|
+ cmb_println(print_info[PRINT_MMAR], regs.mmar);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ /* Bus Fault */
|
|
|
+ if (regs.bfsr.value) {
|
|
|
+ if (regs.bfsr.bits.IBUSERR) {
|
|
|
+ cmb_println(print_info[PRINT_BFSR_IBUSERR]);
|
|
|
+ }
|
|
|
+ if (regs.bfsr.bits.PRECISERR) {
|
|
|
+ cmb_println(print_info[PRINT_BFSR_PRECISERR]);
|
|
|
+ }
|
|
|
+ if (regs.bfsr.bits.IMPREISERR) {
|
|
|
+ cmb_println(print_info[PRINT_BFSR_IMPREISERR]);
|
|
|
+ }
|
|
|
+ if (regs.bfsr.bits.UNSTKERR) {
|
|
|
+ cmb_println(print_info[PRINT_BFSR_UNSTKERR]);
|
|
|
+ }
|
|
|
+ if (regs.bfsr.bits.STKERR) {
|
|
|
+ cmb_println(print_info[PRINT_BFSR_STKERR]);
|
|
|
+ }
|
|
|
+
|
|
|
+#if (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M4) || (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M7)
|
|
|
+ if (regs.bfsr.bits.LSPERR) {
|
|
|
+ cmb_println(print_info[PRINT_BFSR_LSPERR]);
|
|
|
+ }
|
|
|
+#endif
|
|
|
+
|
|
|
+ if (regs.bfsr.bits.BFARVALID) {
|
|
|
+ if (regs.bfsr.bits.PRECISERR) {
|
|
|
+ cmb_println(print_info[PRINT_BFAR], regs.bfar);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ /* Usage Fault */
|
|
|
+ if (regs.ufsr.value) {
|
|
|
+ if (regs.ufsr.bits.UNDEFINSTR) {
|
|
|
+ cmb_println(print_info[PRINT_UFSR_UNDEFINSTR]);
|
|
|
+ }
|
|
|
+ if (regs.ufsr.bits.INVSTATE) {
|
|
|
+ cmb_println(print_info[PRINT_UFSR_INVSTATE]);
|
|
|
+ }
|
|
|
+ if (regs.ufsr.bits.INVPC) {
|
|
|
+ cmb_println(print_info[PRINT_UFSR_INVPC]);
|
|
|
+ }
|
|
|
+ if (regs.ufsr.bits.NOCP) {
|
|
|
+ cmb_println(print_info[PRINT_UFSR_NOCP]);
|
|
|
+ }
|
|
|
+ if (regs.ufsr.bits.UNALIGNED) {
|
|
|
+ cmb_println(print_info[PRINT_UFSR_UNALIGNED]);
|
|
|
+ }
|
|
|
+ if (regs.ufsr.bits.DIVBYZERO0) {
|
|
|
+ cmb_println(print_info[PRINT_UFSR_DIVBYZERO0]);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ /* Debug Fault */
|
|
|
+ if (regs.hfsr.bits.DEBUGEVT) {
|
|
|
+ if (regs.dfsr.value) {
|
|
|
+ if (regs.dfsr.bits.HALTED) {
|
|
|
+ cmb_println(print_info[PRINT_DFSR_HALTED]);
|
|
|
+ }
|
|
|
+ if (regs.dfsr.bits.BKPT) {
|
|
|
+ cmb_println(print_info[PRINT_DFSR_BKPT]);
|
|
|
+ }
|
|
|
+ if (regs.dfsr.bits.DWTTRAP) {
|
|
|
+ cmb_println(print_info[PRINT_DFSR_DWTTRAP]);
|
|
|
+ }
|
|
|
+ if (regs.dfsr.bits.VCATCH) {
|
|
|
+ cmb_println(print_info[PRINT_DFSR_VCATCH]);
|
|
|
+ }
|
|
|
+ if (regs.dfsr.bits.EXTERNAL) {
|
|
|
+ cmb_println(print_info[PRINT_DFSR_EXTERNAL]);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+#endif /* (CMB_CPU_PLATFORM_TYPE != CMB_CPU_ARM_CORTEX_M0) */
|
|
|
+
|
|
|
+#if (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M4) || (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M7)
|
|
|
+static uint32_t statck_del_fpu_regs(uint32_t fault_handler_lr, uint32_t sp) {
|
|
|
+ statck_has_fpu_regs = (fault_handler_lr & (1UL << 4)) == 0 ? true : false;
|
|
|
+
|
|
|
+ /* the stack has S0~S15 and FPSCR registers when statck_has_fpu_regs is true, double word align */
|
|
|
+ return statck_has_fpu_regs == true ? sp + sizeof(size_t) * 18 : sp;
|
|
|
+}
|
|
|
+#endif
|
|
|
+
|
|
|
+/**
|
|
|
+ * backtrace for fault
|
|
|
+ * @note only call once
|
|
|
+ *
|
|
|
+ * @param fault_handler_lr the LR register value on fault handler
|
|
|
+ * @param fault_handler_sp the stack pointer on fault handler
|
|
|
+ */
|
|
|
+void cm_backtrace_fault(uint32_t fault_handler_lr, uint32_t fault_handler_sp) {
|
|
|
+ uint32_t stack_pointer = fault_handler_sp, saved_regs_addr = stack_pointer;
|
|
|
+ const char *regs_name[] = { "R0 ", "R1 ", "R2 ", "R3 ", "R12", "LR ", "PC ", "PSR" };
|
|
|
+
|
|
|
+#ifdef CMB_USING_DUMP_STACK_INFO
|
|
|
+ uint32_t stack_start_addr = main_stack_start_addr;
|
|
|
+ size_t stack_size = main_stack_size;
|
|
|
+#endif
|
|
|
+
|
|
|
+ CMB_ASSERT(init_ok);
|
|
|
+ /* only call once */
|
|
|
+ CMB_ASSERT(!on_fault);
|
|
|
+
|
|
|
+ on_fault = true;
|
|
|
+
|
|
|
+ cmb_println("");
|
|
|
+ cm_backtrace_firmware_info();
|
|
|
+
|
|
|
+#ifdef CMB_USING_OS_PLATFORM
|
|
|
+ on_thread_before_fault = fault_handler_lr & (1UL << 2);
|
|
|
+ /* check which stack was used before (MSP or PSP) */
|
|
|
+ if (on_thread_before_fault) {
|
|
|
+ cmb_println(print_info[PRINT_FAULT_ON_THREAD], get_cur_thread_name() != NULL ? get_cur_thread_name() : "NO_NAME");
|
|
|
+ saved_regs_addr = stack_pointer = cmb_get_psp();
|
|
|
+
|
|
|
+#ifdef CMB_USING_DUMP_STACK_INFO
|
|
|
+ get_cur_thread_stack_info(stack_pointer, &stack_start_addr, &stack_size);
|
|
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+#endif /* CMB_USING_DUMP_STACK_INFO */
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+
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+ } else {
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+ cmb_println(print_info[PRINT_FAULT_ON_HANDLER]);
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|
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+ }
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+#else
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|
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+ /* bare metal(no OS) environment */
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+ cmb_println(print_info[PRINT_FAULT_ON_HANDLER]);
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|
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+#endif /* CMB_USING_OS_PLATFORM */
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+
|
|
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+ /* delete saved R0~R3, R12, LR,PC,xPSR registers space */
|
|
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+ stack_pointer += sizeof(size_t) * 8;
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|
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+
|
|
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+#if (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M4) || (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M7)
|
|
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+ stack_pointer = statck_del_fpu_regs(fault_handler_lr, stack_pointer);
|
|
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+#endif /* (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M4) || (CMB_CPU_PLATFORM_TYPE == CMB_CPU_ARM_CORTEX_M7) */
|
|
|
+
|
|
|
+#ifdef CMB_USING_DUMP_STACK_INFO
|
|
|
+ /* check stack overflow */
|
|
|
+ if (stack_pointer < stack_start_addr || stack_pointer > stack_start_addr + stack_size) {
|
|
|
+ stack_is_overflow = true;
|
|
|
+ }
|
|
|
+ /* dump stack information */
|
|
|
+ dump_stack(stack_start_addr, stack_size, (uint32_t *) stack_pointer);
|
|
|
+#endif /* CMB_USING_DUMP_STACK_INFO */
|
|
|
+
|
|
|
+ /* the stack frame may be get failed when it is overflow */
|
|
|
+ if (!stack_is_overflow) {
|
|
|
+ /* dump register */
|
|
|
+ cmb_println(print_info[PRINT_REGS_TITLE]);
|
|
|
+
|
|
|
+ regs.saved.r0 = ((uint32_t *)saved_regs_addr)[0]; // Register R0
|
|
|
+ regs.saved.r1 = ((uint32_t *)saved_regs_addr)[1]; // Register R1
|
|
|
+ regs.saved.r2 = ((uint32_t *)saved_regs_addr)[2]; // Register R2
|
|
|
+ regs.saved.r3 = ((uint32_t *)saved_regs_addr)[3]; // Register R3
|
|
|
+ regs.saved.r12 = ((uint32_t *)saved_regs_addr)[4]; // Register R12
|
|
|
+ regs.saved.lr = ((uint32_t *)saved_regs_addr)[5]; // Link register LR
|
|
|
+ regs.saved.pc = ((uint32_t *)saved_regs_addr)[6]; // Program counter PC
|
|
|
+ regs.saved.psr.value = ((uint32_t *)saved_regs_addr)[7]; // Program status word PSR
|
|
|
+
|
|
|
+ cmb_println(" %s: %08x %s: %08x %s: %08x %s: %08x", regs_name[0], regs.saved.r0,
|
|
|
+ regs_name[1], regs.saved.r1,
|
|
|
+ regs_name[2], regs.saved.r2,
|
|
|
+ regs_name[3], regs.saved.r3);
|
|
|
+ cmb_println(" %s: %08x %s: %08x %s: %08x %s: %08x", regs_name[4], regs.saved.r12,
|
|
|
+ regs_name[5], regs.saved.lr,
|
|
|
+ regs_name[6], regs.saved.pc,
|
|
|
+ regs_name[7], regs.saved.psr.value);
|
|
|
+ cmb_println("==============================================================");
|
|
|
+ }
|
|
|
+
|
|
|
+ /* the Cortex-M0 is not support fault diagnosis */
|
|
|
+#if (CMB_CPU_PLATFORM_TYPE != CMB_CPU_ARM_CORTEX_M0)
|
|
|
+ regs.syshndctrl.value = CMB_SYSHND_CTRL; // System Handler Control and State Register
|
|
|
+ regs.mfsr.value = CMB_NVIC_MFSR; // Memory Fault Status Register
|
|
|
+ regs.mmar = CMB_NVIC_MMAR; // Memory Management Fault Address Register
|
|
|
+ regs.bfsr.value = CMB_NVIC_BFSR; // Bus Fault Status Register
|
|
|
+ regs.bfar = CMB_NVIC_BFAR; // Bus Fault Manage Address Register
|
|
|
+ regs.ufsr.value = CMB_NVIC_UFSR; // Usage Fault Status Register
|
|
|
+ regs.hfsr.value = CMB_NVIC_HFSR; // Hard Fault Status Register
|
|
|
+ regs.dfsr.value = CMB_NVIC_DFSR; // Debug Fault Status Register
|
|
|
+ regs.afsr = CMB_NVIC_AFSR; // Auxiliary Fault Status Register
|
|
|
+
|
|
|
+ fault_diagnosis();
|
|
|
+#endif
|
|
|
+
|
|
|
+ print_call_stack(stack_pointer);
|
|
|
+}
|
Wendal Chen