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I am running a Python GUI application. I want to invoke and control GDB from it, like load an executable file, set breakpoints etc. I see that GDB has a command line interface which can be used by sending strings to the GDB process, but I want to do it the Python way. Is there a gdb.py? I see that "archer" branch has something like "import gdb", but it doesn't work in Ubuntu's default installation of Python. Where do I get this module or is there any other method to control GDB from Python?
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Pretty much anything that can be done at the GDB command line can be done with a breakpoint from Python. You can attach commands to a breakpoint, make it conditional, ignore a certain number of hits, make the breakpoint specific to a thread or process, and all of the things you can do from the command line.
Explanation. GDB embeds the Python interpreter so it can use Python as an extension language. You can't just import gdb from /usr/bin/python like it's an ordinary Python library because GDB isn't structured as a library. What you can do is source MY-SCRIPT.py from within gdb (equivalent to running gdb -x MY-SCRIPT.py ) ...
Yes, you can control GDB from Python. The Python documentation is at http://sourceware.org/gdb/current/onlinedocs/gdb/Python.html#Python.
If you want an example of some scripting, take a look at http://tromey.com/blog/?p=548
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pygdbmi is what you want.
With it I was able to reset an embedded target from Python using the following:
from pygdbmi.gdbcontroller import GdbController if __name__ == '__main__': gdbmi = GdbController() response = gdbmi.write('b main') response = gdbmi.write('target remote localhost:2331') response = gdbmi.write('mon reset 0') response = gdbmi.write('c') gdbgui provides a much cooler example.
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