How to use gdb debugging in vscode

1. vscode starts the debug window

Press Ctrl Shift D to open the Debug window

The default is "No configurations", click "F5", You will be prompted to configure GDB parameters (select gcc build and debug active file). The configuration file name is launch.json (Configuration Reference 3)

After the configuration is completed, press F5 again, you will be prompted to configure GCC, select "Configure Task", select "C/C: build and debug active file", the configuration file name is task.json (Configuration Reference 2)

2. GCC Configuration

{
    // 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": Compile Chain address

3. GDB configuration

{
    // 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": The name of the program to be debugged (including the path, preferably an absolute path to avoid trouble)

"miDebuggerServerAddress" : The address and port of the server

"cwd": The path of the debugging level

"miDebuggerPath": The path of gdb

4. GDB server compilation and operation

1) Compile

When compiling P53, please turn on the following switch; P59 needs to copy one from the compilation chain directory.

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

The compiled files are as follows:

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$

Instructions:

The mips-linux-gdb in the install/bin directory is required for configuration in vscode;

installgdbserver/bin/ The mips-linux-gdbserver in the directory needs to be copied to the board;

2) Log in to the device via ssh, download gdbserver to the /tmp directory, and add x permissions

3) Log in to the device via ssh, download the executable program to the /tmp directory, and add x permissions

4) Run

/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!

Remarks:
1) Download the executable program , it must be ensured that it is compiled with the compilation chain required by the device;
2) When pressing F5 to debug in vscode, refer to 1 and 2 for GCC compilation configuration and GDB;

5, debugging

Ready to complete, debug in VSCode.

Related recommendations: vscode tutorial

The above is the detailed content of How to use gdb debugging in vscode. For more information, please follow other related articles on the PHP Chinese website!