VScode 调试 linux内核
这里调试的 linux 内核是通过 Linux+SD卡(rootfs)运行的内核
gdb 命令行调试
编辑 /home/tyustli/.gdbinit
文件,参考 【GDB】 .gdbinit 文件
set auto-load safe-path /home/tyustli/code/open_source/kernel/linux-6.5.7/.gdbinit
在 linux 源码项目的根目录新建 .gdbinit
文件
target remote localhost:1234
b start_kernel
layout src
c
先启动 linux 内核,让其等待 GDB 连接
# 启动之后等待 GDB 连接
sudo qemu-system-arm -M vexpress-a9 -m 512M -kernel arch/arm/boot/zImage -dtb arch/arm/boot/dts/arm/vexpress-v2p-ca9.dtb -nographic \
-append "root=/dev/mmcblk0 rw console=ttyAMA0" -sd /home/tyustli/code/open_source/busybox/rootfs.ext3 -s -S
# -dtb 指定设备树,否则会失败
在编译 linux 的当前路径输入
arm-none-linux-gnueabihf-gdb vmlinux -se vmlinux
如果没有设置 /home/tyustli/.gdbinit
文件,那么对应的命令为
arm-none-linux-gnueabihf-gdb vmlinux -se vmlinux -x .gdbinit
即指定 .gdbinit 的文件为当前路径。需要注意的是,如果指定了 /home/tyustli/.gdbinit
文件,就不能加 -x .gdbinit
调试界面信息
VScode 调试
参考 qemu基础篇——VSCode 配置 GDB 调试
要想调试 kernel 只需要再添加一个 kernel 的配置即可
{
"version": "0.2.0",
"configurations": [
{
// qemu 裸机调试配置
"name": "qemu_bare",
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/qemu_code/bare/example/0020_mmu/bsp.elf",
"args": [],
"stopAtEntry": true,
"cwd": "${workspaceFolder}/qemu_code/bare",
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
"miDebuggerPath": "/home/tyustli/cross_tool/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-gdb",
"miDebuggerServerAddress": "localhost:1234",
},
{ // u-boot 调试配置
"name": "u-boot",
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/open_source/u-boot/u-boot",
"args": [],
"stopAtEntry": true,
"cwd": "${workspaceFolder}/open_source/u-boot",
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
"miDebuggerPath": "/home/tyustli/cross_tool/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-gdb",
"miDebuggerServerAddress": "localhost:1234",
},
{ // linux kernel 调试配置
"name": "linux_kernel",
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/open_source/kernel/linux-6.5.7/vmlinux",
"args": [],
"stopAtEntry": true,
"cwd": "${workspaceFolder}/open_source/kernel/linux-6.5.7",
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
"miDebuggerPath": "/home/tyustli/cross_tool/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-gdb",
"miDebuggerServerAddress": "localhost:1234",
}
]
}
有一点需要注意,如果使用 vscode 调试,就不能指定 /home/tyustli/.gdbinit
文件,或者将 /home/tyustli/code/open_source/kernel/linux-6.5.7/.gdbinit
文件的内容清空
先在 start_kernel
打好断点
先启动 linux 内核,让其等待 GDB 连接文章来源:https://www.toymoban.com/news/detail-722008.html
# 启动之后等待 GDB 连接
sudo qemu-system-arm -M vexpress-a9 -m 512M -kernel arch/arm/boot/zImage -dtb arch/arm/boot/dts/arm/vexpress-v2p-ca9.dtb -nographic \
-append "root=/dev/mmcblk0 rw console=ttyAMA0" -sd /home/tyustli/code/open_source/busybox/rootfs.ext3 -s -S
启动调试
文章来源地址https://www.toymoban.com/news/detail-722008.html
到了这里,关于VScode 调试 linux内核的文章就介绍完了。如果您还想了解更多内容,请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章,希望大家以后多多支持TOY模板网!