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gdb, the debugging tool

To run GDB on an embedded execution target, use a GDB backend with the GDB standard remote protocol or a similar protocol. The most common are the following two types of GDB backend.

A GDB stub

This is an exception handler for breakpoints, and it must be linked to your application. GDB stubs use the GDB standard remote protocol.

An existing ROM monitor used as a GDB backend

The most common approach means using the following processes.

- With a similar protocol to the GDB standard remote protocol.
- With an interface that uses the ROM monitor directly. With such an interface, GDB only formats and parses commands.

For more information on debugging tools, see Debugging with GDB in GNUPro Debugging Tools.