GDB stub that allows debugging of embedded devices
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README.md

avatar-gdbstub

GDB stub that allows debugging of embedded devices

This is the source code for a very small GDB stub implementation. The stub is supposed to communicate with the host GDB over the GDB serial protocol or a custom protocol (Avatar).

Depending on how the serial line is used, you need a Multiplexer to set up the environment for you and send any stuff that is needed until the GDB stub is running.

Adapting the GDB stub for your platform is easy: Copy one of the existing gdbstub_*.cmake files in the cmake/ directory and adapt it to your platform. You might need to develop additional serial drivers and platform initialization files.

test_programs contains simple programs that test one functionality of an embedded system - e.g., serial output, CPU features, debug features. Those programs are meant to discover an embedded system before the GDB stub is ported.