目录
一、概述
软件开发中常见的比较棘手的问题就是hartfault/Default_Handler/dump，俗称跑飞了。
参考cmbacktrace，在瑞萨RZN2L/T2M实现栈回溯，串口打印栈回溯信息。
使用add2line或Python打印发生错误函数位置。
循环打印栈回溯信息和编译日期，便于追溯bug。
二、参考资料
https://github.com/armink/CmBacktrace/tree/master
https://cloud.tencent.com/developer/article/1736680
https://www.segger.com/downloads/application-notes/AN00016
https://stackoverflow.com/questions/47331426/stack-backtrace-for-arm-core-using-gcc-compiler-when-there-is-a-msp-to-psp-swit/50923698#50923698
https://blog.csdn.net/laviolette/article/details/51376751
https://blog.csdn.net/Teminator_/article/details/143177973?ops_request_misc=&request_id=&biz_id=102&utm_term=cmbacktrace&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default-0-143177973.142^v100^pc_search_result_base9&spm=1018.2226.3001.4187
https://github.com/RT-Thread-Studio/sdk-bsp-rzn2l-etherkit
三、代码
1、加入rzn2_rzt2_backtrace.c
2、void Default_Handler (void)
{
extern void rzt2_rzn2_backtrace(void);
rzt2_rzn2_backtrace();
while(1);
/** A error has occurred. The user will need to investigate the cause. Common problems are stack corruptionor use of an invalid pointer. Use the Fault Status window in e2 studio or manually check the fault status
registers for more information.
*/
BSP_CFG_HANDLE_UNRECOVERABLE_ERROR(0);
}
四、日志
循环打印栈回溯信息和编译日期
date:Dec 17 2024 time:11:47:45 file:../src/rzn2_rzt2_backtrace.c func:backtrace_fault,line:110 hello world! current:lr=807,sp=106480 ====== Main stack information ====== main_stack_start_addr:105510, main_stack_size:1000 ====== code addr information ====== code_start_addr=100, code_size=84c4 ====== sp information ====== stack_pointer: 106480 ====== stack data information ====== line address value 1 106510 92043202 2 10650c 106510 3 106508 0 4 106504 1020e4 5 106500 78787a8 6 1064fc 1023b5 7 1064f8 106500 8 1064f4 921 9 1064f0 1064f8 10 1064ec 2 11 1064e8 f8 12 1064e4 3e8 13 1064e0 2 14 1064dc 1f4 15 1064d8 40490fda 16 1064d4 9d54 17 1064d0 2 18 1064cc 86 19 1064c8 8d20 20 1064c4 3ef 21 1064c0 1064d0 22 1064bc 1 23 1064b8 8d18 24 1064b4 311 25 1064b0 1064b8 26 1064ac 1 27 1064a8 f8 28 1064a4 2f3 29 1064a0 1064a8 30 10649c 1 31 106498 78787a8 32 106494 2d5 33 106490 106498 34 10648c e000ed14 35 106488 78fb261 36 106484 1 37 106480 9d6c ====== result information ====== addr2line.exe -e rzt2m_cmbacktrace.elf -afpiC 8cd 889 703 6e5 6c7 python -u backtrace.py rzt2m_cmbacktrace.elf 8cd 889 703 6e5 6c7 921 3ef 311 2f3 2d5
五、定位函数调用
Jerry.Chen@WTNB-6719 MINGW64 /e/RS_workspace/rzt2m_cmbacktrace/Debug
$ python -u backtrace.py rzt2m_cmbacktrace.elf 8ef 3ef 311 2f3 2d5
elf: rzt2m_cmbacktrace.elf
main --> hal_entry --> func_a --> func_b --> func_c
Jerry.Chen@WTNB-6719 MINGW64 /e/RS_workspace/rzt2m_cmbacktrace/Debug
$ ./addr2line.exe -e rzt2m_cmbacktrace.elf -afpiC 8ef 3ef 311 2f3 2d5
0x000008ef: main at E:\RS_workspace\rzt2m_cmbacktrace\Debug/../rzt_gen/main.c:6
0x000003ef: hal_entry at E:\RS_workspace\rzt2m_cmbacktrace\Debug/../src/hal_entry.c:144
0x00000311: func_a at E:\RS_workspace\rzt2m_cmbacktrace\Debug/../src/hal_entry.c:93
0x000002f3: func_b at E:\RS_workspace\rzt2m_cmbacktrace\Debug/../src/hal_entry.c:87
0x000002d5: func_c at E:\RS_workspace\rzt2m_cmbacktrace\Debug/../src/hal_entry.c:81六、README和工具
#rzt2/n2 栈回溯
1、加入rzn2_rzt2_backtrace.c
2、void Default_Handler (void)
{
extern void rzt2_rzn2_backtrace(void);
rzt2_rzn2_backtrace();
while(1);
/** A error has occurred. The user will need to investigate the cause. Common problems are stack corruption
* or use of an invalid pointer. Use the Fault Status window in e2 studio or manually check the fault status
* registers for more information.
*/
BSP_CFG_HANDLE_UNRECOVERABLE_ERROR(0);
}
3、addr2line.exe -e rzt2m_cmbacktrace.elf -afpiC 8cd 889 703 6e5 6c7
或python -u backtrace.py rzt2m_cmbacktrace.elf 8cd 889 703 6e5 6c7
4、工具在工程根目录