工作原理

使用gdb和gdbserver配合进行远程调试，其中gdbserver运行于开发板上。gdb对应的使用arm-linux-guneabihf-gdb。

实现

先在开发板上运行gdbserver :1234 ./sport_audio -t

使用插件：C/C++或Native Debug

配置中的type项表示对应的插件，主要设置调试的文件名、使用的gdb工具以及远程地址。

其中对于C/C++插件，设置

    "program": "${workspaceFolder}/out/build/cross_gcc_Debug/src/sport_audio",
    "miDebuggerPath": "arm-linux-gnueabihf-gdb",
    "miDebuggerServerAddress": "192.168.10.104:1234"

对于Native Debug，设置

    "executable": "${workspaceFolder}/out/build/cross_gcc_Debug/src/sport_audio",
    "target": "192.168.10.104:1234",
    "remote": true,
    "cwd": "${workspaceRoot}",
    "gdbpath": "arm-linux-gnueabihf-gdb"

launch.json:

{
    // 使用 IntelliSense 了解相关属性。 
    // 悬停以查看现有属性的描述。
    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "cppdbg_remote",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/out/build/cross_gcc_Debug/src/sport_audio",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "为 gdb 启用整齐打印",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
                    "description": "将反汇编风格设置为 Intel",
                    "text": "-gdb-set disassembly-flavor intel",
                    "ignoreFailures": true
                }
            ],
            "miDebuggerPath": "arm-linux-gnueabihf-gdb",
            "miDebuggerServerAddress": "192.168.10.104:1234"
        },
        {
            "type": "gdb",
            "request": "attach",
            "name": "Attach to gdbserver",
            "executable": "${workspaceFolder}/out/build/cross_gcc_Debug/src/sport_audio",
            "target": "192.168.10.104:1234",
            "remote": true,
            "cwd": "${workspaceRoot}",
            "gdbpath": "arm-linux-gnueabihf-gdb"
        },
        {
            "type": "lldb",
            "request": "custom",
            "name": "lldb Remote debug",
            "targetCreateCommands": [
                "target create ${workspaceFolder}/out/build/cross_gcc_Debug/src/sport_audio"
            ],
            "processCreateCommands": [
                "gdb-remote 192.168.10.104:1234"
            ]
        }
    ]
}

使用LLDB的问题

LLDB也支持gdbserver，使用以下配置，可以连接上，但是无法打断点。而且LLDB不会使用arm-linux-guneabihf-gdb。

{
    "type": "lldb",
    "request": "custom",
    "name": "lldb Remote debug",
    "targetCreateCommands": [
        "target create ${workspaceFolder}/out/build/cross_gcc_Debug/src/sport_audio"
    ],
    "processCreateCommands": [
        "gdb-remote 192.168.10.104:1234"
    ]
}