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vscode如何使用gdb调试

vscode如何使用gdb调试

1、vscode启动debug窗口

按Ctrl+Shift+D,打开Debug窗口

默认是“No configurations”, 点击“F5”,会提示你配置GDB参数(选择gcc build and debug active file),配置文件名称为launch.json(配置参考3)

配置完成后,再按F5, 会提示配置GCC,选择“Configure Task”, 选择“C/C++: build and debug active file”, 配置文件名称为task.json(配置参考2)

2、GCC配置

{     // See https://go.microsoft.com/fwlink/?LinkId=733558      // for the documentation about the tasks.json format     "version": "2.0.0",     "tasks": [         {             "type": "shell",             "label": "gcc build active file",             "command": "/usr/share/mips-gcc-4.6/staging_dir/bin/mips-linux-gcc",             "args": [                 "-g",                 "${file}",                 "-o",                 "${fileDirname}/${fileBasenameNoExtension}"             ],             "options": {                 "cwd": "/usr/bin"             },             "problemMatcher": [                 "$gcc"             ]         }     ] }

“command”: 编译链的地址

3、GDB配置

{     // Use IntelliSense to learn about possible attributes.     // Hover to view descriptions of existing attributes.     // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387     "version": "0.2.0",     "configurations": [         {             "name": "gcc build and debug active file",             "type": "cppdbg",             "request": "launch",             "miDebuggerServerAddress": "192.168.0.1:10000",             "program": "/home/renyinshan/work/p53/apps/cmdlib/test",             "args": [],             "stopAtEntry": true,             "cwd": "/home/renyinshan/work/p53/apps/cmdlib/",             "environment": [],             "externalConsole": false,             "MIMode": "gdb",             "setupCommands": [                 {                     "description": "Enable pretty-printing for gdb",                     "text": "-enable-pretty-printing",                     "ignoreFailures": true                 }             ],             "preLaunchTask": "gcc build active file",             "miDebuggerPath": "/home/renyinshan/work/p53/apps/gdb/install/bin/mips-linux-gdb"         }     ] }

“program”: 要调试的程序名(包含路径,最好绝对路径,免得麻烦)

“miDebuggerServerAddress”: 服务器的地址和端口

“cwd”: 调试程度的路径

“miDebuggerPath”: gdb的路径

4、GDB server编译及运行

1)编译

P53编译时,请打开如下开关; P59需要从编译链目录拷贝一个。

scripts/tozedap-router_4g_industry/config.tozedap-router_4g_industry:564:export NO_CPP_LIB=0  GDB运行需要libstdc++.so.6的库,所以需要把此开关打开。
./cool 3 gdb_build  等待完成即可

编译完成后的文件如下:

renyinshan@renyinshan:~/work/p53/build$ ls ../apps/gdb/install/* ../apps/gdb/install/bin: mips-linux-gdb  mips-linux-gdb-add-index  mips-linux-run  ../apps/gdb/install/include: gdb  ../apps/gdb/install/lib: libmips-linux-sim.a  ../apps/gdb/install/share: gdb  info  locale  man  renyinshan@renyinshan:~/work/p53/build$ ls ../apps/gdb/installgdbserver/bin/ mips-linux-gdbserver renyinshan@renyinshan:~/work/p53/build$

说明:

install/bin 目录的mips-linux-gdb为vscode中配置需要的;

installgdbserver/bin/ 目录中的mips-linux-gdbserver,需要拷贝到板子中;

2)ssh登录设备,下载gdbserver到/tmp目录中, 并增加+x权限

3)ssh登录设备,下载可执行程序到/tmp目录中, 并增加+x权限

4)运行

/tmp # ./mips-linux-gdbserver :10000 ./test  调试输出:  /tmp # ./mips-linux-gdbserver :10000 test  Process /tmp/test created; pid = 22608 Listening on port 10000 Remote debugging from host 192.168.0.245 APP is running!

备注说明:
1) 下载的可执行程序,必须保证是设备所需编译链编译的;
2) vscode中按F5调试时,GCC编译的配置和GDB参考1和2;

5、调试

准备完成, 在VSCode进行调试。

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