- First of all, build and generate kernel image (bzImage). Just build (Kernel Name)-build target in CLion.
- When build progress finished, open CLion's Run / Debug Configuration.
- Add "Remote Debug" to attach GDB (Debugger) to compiled kernel, which is being run at QEMU.
- Set name, symbol file (vmlinux) 's location and QEMU's local provision port at configuration.
- Default GDB provision port is "1234".
- Execute QEMU by pressing "build" button for CMake target added with add_kernel_target().
- QEMU window will appear and kernel will wait any GDB connection.
- Let's Set Breakpoint at start_kernel() function, the entrypoint of the Linux kernel.
- start_kernel() function is located at (Kernel Path)/init/main.c.
- Run GDB using setting we have made. This will resume the QEMU machine and invoke breakpoint.
- If kernel stopped execution at the breakpoint we set, You're ready to go!
