Debugging - Exercises

Now that gdb or gdb-multiarch are set up, let's do some exercises.

1. Access exercises/gdb_hello_world
2. Inspect the configuration files openocd.cfg (for openocd ) and .gdbinit (for gdb).
3. Execute cargo run, leave out --release to use the development profile.
   • Without it, cargo will remove / optimise lines.
   • We should debug with --release to ensure the best outcomes.
   • But this examples is just to get started.
4. Run gdb -x gdbinit -q (or gdb-multiarch on Linux) in one terminal, and openocd in another (at the same directory!).
   • In the image, _peripherals has not yet been assigned. gdb stopped execution there. The window at the bottom half is our (gdb) prompt.
     
5. Add a break point where a/=2, then print the resulting value.
6. Exit with Ctrl+D or Ctrl+C.

Suggested Reading

• MB2 article on Debugging.