Linux Kernel Module Cheat

tmux just makes things even more fun by allowing us to see both the terminal for:

at once without dragging windows around!

First start tmux with:

Now that you are inside a shell inside tmux, you can start GDB simply with:

which is just a convenient shortcut for:

This splits the terminal into two panes:

and focuses on the GDB pane.

Now you can navigate with the usual tmux shortcuts:

See the tmux manual for further details:

To start again, switch back to the QEMU pane with Ctrl-O, kill the emulator, and re-run:

This automatically clears the GDB pane, and starts a new one.

The option --tmux-args determines which options will be passed to the program running on the second tmux pane, and is equivalent to:

This is equivalent to:

Due to Python’s CLI parsing quicks, if the run-gdb arguments start with a dash -, you have to use the = sign, e.g. to GDB step debug early boot:

Bibliography: https://unix.stackexchange.com/questions/152738/how-to-split-a-new-window-and-run-a-command-in-this-new-window-using-tmux/432111#432111