launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Launch with GDB",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/build/floppy/KERNEL.BIN",
            "cwd": "${workspaceFolder}",
            "args": [],
            "targetArchitecture": "x86",
            "MIMode": "gdb",
            "miDebuggerPath": "/usr/bin/gdb",
            "miDebuggerArgs": "",
            "customLaunchSetupCommands": [
                {
                    "text": "target remote localhost:1234",
                    "description": "Connect to QEMU remote debugger"
                }
            ],
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
                    "text": "file ${workspaceFolder}${input:debuggerTarget}",
                    "description": "Load binary."
                }

            ],
            "preLaunchTask": "Run QEMU with debugger"
        }
    ],
    "inputs": [
        {
            "id": "debuggerTarget",
            "type": "promptString",
            "description": "What do you want to debug?",
            "default": "/os/kernel/bin/kernel.elf"
        }
    ]
}