vscode如何使用gdb调试-木庄网络博客

本文摘自PHP中文网，作者V，侵删。

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。