.. _rvbacktrace_rtthread: rvbacktrace_RTThread ======================================== 概述 ------ 该示例展示了在riscv32机器上，使用frame pointer完成对 ``RTThread-nano`` 的线程栈回溯。 硬件配置 ------------ 无特殊硬件配置 运行 ------ 一旦此程序正确运行，在console上会输出对应线程的线程栈信息。在finsh中输入 ``rv_backtrace_all`` 会输出除当前线程的其他线程栈的信息。 - 单一线程栈 .. code-block:: console initialize rti_board_start:0 done \ | / - RT - Thread Operating System / | \ 3.1.5 build Nov 20 2024 2006 - 2020 Copyright by rt-thread team do components initialization. initialize rti_board_end:0 done initialize finsh_system_init:0 done ---- RV_Backtrace Call Frame Start: ---- ###Please consider the value of ra as accurate and the value of sp as only for reference### ----------s--------------------Thread: main backtrace------------------------------ Current Thread Name: main [0]Stack interval :[0x10819a0 - 0x10819c0] ra 0x800103ea [1]Stack interval :[0x10819c0 - 0x10819d0] ra 0x8000ff9c [2]Stack interval :[0x10819d0 - 0x10819e0] ra 0x80006708 [3]Stack interval :[0x10819e0 - 0x1081a00] ra 0x800094f6 [4]Stack interval :[0x1081a00 - 0xdeadbeef] ra 0x8000c65a addr2line -e xxx.elf -a -f 800103e6 8000ff98 80006704 800094f2 8000c656 ---- RV_Backtrace Call Frame End:---- - 其他线程栈 .. code-block:: console rv_backtrace_all ---- RV_Backtrace Call Frame Start: ---- ------------------------------Thread: event_send backtrace------------------------------ [0]Thread Name: event_send [0]Stack interval :[0x108299c - 0x10829cc] ra 0x8000cb7a [1]Stack interval :[0x10829cc - 0x10829fc] ra 0x8000cbdc [2]Stack interval :[0x10829fc - 0x1082a1c] ra 0x8000667c [3]Stack interval :[0x1082a1c - 0xdeadbeef] ra 0x8000c65a addr2line -e xxx.elf -a -f 8000cb76 8000cbd8 80006678 8000c656 ------------------------------Thread: event_rec backtrace------------------------------ [1]Thread Name: event_rec [0]Stack interval :[0x1082504 - 0x1082544] ra 0x8000a0a6 [1]Stack interval :[0x1082544 - 0x1082574] ra 0x8000663e [2]Stack interval :[0x1082574 - 0xdeadbeef] ra 0x8000c65a addr2line -e xxx.elf -a -f 8000a0a2 8000663a 8000c656 ------------------------------Thread: tidle backtrace------------------------------ [3]Thread Name: tidle [0]Stack interval :[0x10804e0 - 0x1080510] ra 0x800096ee [1]Stack interval :[0x1080510 - 0xdeadbeef] ra 0x8000c65a addr2line -e xxx.elf -a -f 800096ea 8000c656 ------------------------------Thread: timer backtrace------------------------------ [4]Thread Name: timer [0]Stack interval :[0x1080928 - 0x1080958] ra 0x8000d8d6 [1]Stack interval :[0x1080958 - 0xdeadbeef] ra 0x8000c65a addr2line -e xxx.elf -a -f 8000d8d2 8000c656 Thread Total Num: 5 ---- RV_Backtrace Call Frame End:---- .. note:: - 在 ``backtrace_config.h`` 中开启 ``BACKTRACE_ALL`` 可以回溯除当前线程的其他所有线程栈。 - 该组件一般用于软件调试，建议在debug等级下使用 - 查看函数名调用关系链，需要使用addr2line工具 .. code-block:: console addr2line -e xxx.elf -a -f ...