The GNU debugger (gdb)

The GNU debugger is a command-line program that provides a very rich set of options.

You'll find a tutorial-style doc called "Using GDB" as an appendix in this manual.

You can invoke gdb by using the following variants, which correspond to your target platform:

For this target: Use this command:
ARMv7 ntoarmv7-gdb
Intel ntox86-gdb

For more information, see the gdb entry in the Utilities Reference.