[开发工具]Vscode qemu GDB远程调试linux内核

一、qemu（server端）启动Linux内核，带上-S -s选项

qemu-system-x86_64 -m 1024\
    -nographic $SMP -kernel arch/x86/boot/bzImage \
    -append "noinintrd console=ttyS0 crashkernel=256M root=/dev/vda             
    rootfstype=ext4 rw loglevel=8" \
    -drive if=none,file=rootfs_debian_x86_64.ext4,id=hd0 \
    -device virtio-blk-pci,drive=hd0 \
    -netdev user,id=mynet\
    -device virtio-net-pci,netdev=mynet\
    --fsdev local,id=kmod_dev,path=./kmodules,security_model=none \
    -device virtio-9p-pci,fsdev=kmod_dev,mount_tag=kmod_mount\
    -S -s

二、vscode端(client端)的json文件配置（qemu运行x86）

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "kernel-debug",
            "type": "cppdbg",
            "request": "launch",
            "miDebuggerServerAddress": "127.0.0.1:1234",
            "program": "${workspaceFolder}/vmlinux",
            "args": [],
            "stopAtEntry": true,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "logging": {
                "engineLogging": false
            },
            "MIMode": "gdb",
        }
    ]
}

?三、vscode端(client端)的json文件配置（qemu运行arm）

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "kernel-debug",
            "type": "cppdbg",
            "request": "launch",
            "miDebuggerServerAddress": "127.0.0.1:1234",
            "program": "${workspaceFolder}/vmlinux",
            "args": [],
            "stopAtEntry": true,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "logging": {
                "engineLogging": false
            },
            "MIMode": "gdb",
            "miDebuggerPath": "/opt/gcc-arm-none-eabi-10.3-2021.07/bin/arm-none-eabi-gdb"
        }
    ]
}