前言

XV6操作系统学习价值很大，而且有罗秋明老师的中文配套书籍，所以接下来准备好好研究下。

环境搭建

首先下载xv6 rev9版本

解压后修改Makefile

修改编译参数如下，不然编译会出错

1	`CFLAGS` `=` `-fno-pic` `-static` `-fno-builtin` `-fno-strict-aliasing` `-O2` `-Wall` `-MD` `-ggdb` `-m32` `-fno-omit-frame-pointer`

修改GDB端口为1234，不然vs code调试会失败

1 2	`GDBPORT` `=` $(shell expr ``id` `-`u` `%` `5000` `+` `25000)` `GDBPORT` `=` `1234`

make

make qemu-gdb

vs code远程ssh打开XV6目录

新建.vscode/launch.json文件，内容如下

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "(gdb) 附加",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/kernel",
            "MIMode": "gdb",
            "externalConsole": false,
            "cwd":"${workspaceFolder}/",
            "miDebuggerPath": "/usr/bin/gdb", 
            "miDebuggerServerAddress": "127.0.0.1:1234",
        },
    ]
}