一：VSCode增加配置文件

1.Predefined variables

${userHome} - the path of the user's home folder
${workspaceFolder} - the path of the folder opened in VS Code
${workspaceFolderBasename} - the name of the folder opened in VS Code without any slashes (/)
${file} - the current opened file
${fileWorkspaceFolder} - the current opened file's workspace folder
${relativeFile} - the current opened file relative to workspaceFolder
${relativeFileDirname} - the current opened file's dirname relative to workspaceFolder
${fileBasename} - the current opened file's basename
${fileBasenameNoExtension} - the current opened file's basename with no file extension
${fileExtname} - the current opened file's extension
${fileDirname} - the current opened file's folder path
${fileDirnameBasename} - the current opened file's folder name
${cwd} - the task runner's current working directory upon the startup of VS Code
${lineNumber} - the current selected line number in the active file
${selectedText} - the current selected text in the active file
${execPath} - the path to the running VS Code executable
${defaultBuildTask} - the name of the default build task
${pathSeparator} - the character used by the operating system to separate components in file paths
${/} - shorthand for ${pathSeparator}

2.配置文件

.vscode/tasks.json

{
    //编译使用文件
    "tasks": [
        {
            "label": "arm build", //任务的名字叫Build，注意是大小写区分的，等会在launch.json中(preLaunchTask)调用这个名字
            "type": "shell",
            "command": "make", //编译命令
            "args": [], //编译参数
            "problemMatcher": [
                "$gcc" //使用gcc捕获错误
            ],
            "options": {
                "cwd": "${workspaceFolder}" //vs code 打开的文件夹路径
            },
            "group": {
                "kind": "build",
                "isDefault": true
                // 任务分组，因为是tasks而不是task，意味着可以连着执行很多任务
                // 在build组的任务们，可以通过在Command Palette(F1) 输入run build task来运行
                // 当然，如果任务分组是test，你就可以用run test task来运行 
            },
            "detail": "Task generated by Debugger."
        }
    ],
    "version": "2.0.0"
}

.vscode/launch.json

{
    // 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
    // 调试使用文件
    // ${workspaceFolder} :表示当前workspace文件夹路径，也即/home/Coding/Test
	// ${workspaceRootFolderName}:表示workspace的文件夹名，也即Test
	// ${file}:文件自身的绝对路径，也即/home/Coding/Test/.vscode/tasks.json
	// ${relativeFile}:文件在workspace中的路径，也即.vscode/tasks.json
	// ${fileBasenameNoExtension}:当前文件的文件名，不带后缀，也即tasks
	// ${fileBasename}:当前文件的文件名，tasks.json
	// ${fileDirname}:文件所在的文件夹路径，也即/home/Coding/Test/.vscode
	// ${fileExtname}:当前文件的后缀，也即.json
	// ${lineNumber}:当前文件光标所在的行号
	// ${env:PATH}:系统中的环境变量
    "version": "0.2.0",
    "configurations": [
        {
            "name": "(gdb) Launch", //这个应该是F1中出现的名字
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/taskManager", //需要运行的程序
            "args": [], //程序执行需要传入的参数
            "stopAtEntry": false, //true时，打开控制台以后停止，暂时不执行程序
            "cwd": "${workspaceFolder}", //当前工作路径
            "environment": [],
            "externalConsole": false, //使用外部控制台
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ],
            "preLaunchTask": "C/C++: make build project", //执行编译任务，内容对应task.json中label选项。//在launch之前运行的任务名，这个名字一定要跟tasks.json中的任务名字大小写一致
            "miDebuggerPath": "/usr/bin/gdb", //调试指令
            "miDebuggerServerAddress": "192.168.6.160:9001"//gdb server 
        }
    ]
}

二：配置gdbserver

gdbserver ip:port 程序

三：VSCode调试程序

三：gdb连接gdbserver调试

gdb
target remote ip:port

四：Remote ‘g’ packet reply is too long

重新编译gdb/gdbserver
修改gdb/remote.c文件，屏蔽process_g_packet函数中的下列两行：

 if (buf_len > 2 * rsa->sizeof_g_packet)
     error (_(“Remote ‘g’ packet reply is too long: %s”), rs->buf);

在其后添加：

 if (buf_len > 2 * rsa->sizeof_g_packet) {
      rsa->sizeof_g_packet = buf_len ;
      for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
      {
         if (rsa->regs[i].pnum == -1)
         continue;

         if (rsa->regs[i].offset >= rsa->sizeof_g_packet)
         rsa->regs[i].in_g_packet = 0;
         else
         rsa->regs[i].in_g_packet = 1;
      }
   }