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调试

Windows 下使用 Eclipse 调试

采用 Eclipse 配合 GDB 的调试方案，方便用户上手

使用 Eclipse 调试前，需先按照 Eclipse IDE 调试的步骤，完成 Eclipse 工程导入及编译。

配置 Debug Configurations - Main
配置 Debug Configurations - Debugger
Eclipse 进入 Debug 模式

Eclipse 调试常用快捷键

F5：单步进入，进入函数内部
F6：下一行代码，逐行执行
F7：返回值调用处的下一行代码
F8：继续运行，跳过当前中断点
F11：调试并启动程序

Linux 下使用 GDB 调试

在 Linux 下调试前，需确保与 DebugServer 所在的 Windows 系统可以 ping 通。

在 SDK 根目录编写 jtag-debug.sh 脚本：

$cat jtag-debug.sh

target remote 172.16.31.141:3333    #此处 IP 为 DebugServer 运行 PC 的 IP，端口为 DebugServer 配置的端口

load ./output/d13x_demo88-nor_rt-thread_helloworld/images/d13x.elf  # 对应项目的 elf 文件
file ./output/d13x_demo88-nor_rt-thread_helloworld/images/d13x.elf

在 SDK 根目录下运行 GDB ：

$ ./toolchain/bin/riscv64-unknown-elf-gdb -x ./jtag-debug.sh
GNU gdb (Xuantie-900 elf newlib gcc Toolchain V2.6.1 B-20220906)10.0.50.20200724-git
Copyright (C)2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty"for details.
This GDB was configured as "--host=x86_64-pc-linux-gnu --target=riscv64-unknown-elf".
Type "show configuration"for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type"help".
Type "apropos word" to search for commands related to "word".
warning: No executable has been specified and target does not support
determining executable automatically.  Try using the "file" command.
0x0000000000106b3a in ?? ()
Loading section .text, size 0xa4780 lma 0x40000100
        sectio--Type <RET> for more, q to quit, c to continue without paging--
--Type <RET> for more, q to quit, c to continue without paging--
        section progress:  41.5%, total progress:   inf%
        section progress:  46.2%, total progress:   inf%
        section progress:  50.4%, total progress:   inf%
        section progress:  53.9%, total progress:   inf%
        section progress:  63.3%, total--Type <RET> for more, q to quit, c to continue without paging--
        section progress:  93.5%, total progress:   inf%--Type <RET> for more, q to quit, c to continue without paging--
        section progress: 100.0%, total progress:   inf%
Loading section .rodata, size 0x843b8 lma 0x400a4880
        section progress:  27.7%, total progress:   i--Type <RET> for more, q to quit, c to continue without paging--
        sect--Type <RET> for more, q to quit, c to continue without paging--
        section progress: 100.0%, total progress:   inf%
Loading section .data, size 0x32e0 lma 0x40128c40
--Type <RET> for more, q to quit, c to continue without paging--
        section progress: 100.0%, total progress:   inf%
Start address 0x0000000040000100, load size 1228312
Transfer rate: 107 KB/sec, 3988 bytes/write.

显示以上信息，表示已经进入 GDB 调试模式。