Hello again,
here is a small HOWTO for debugging Genode apps on Linux:
* The first thing to do is to interrupt Genode at a certain point as you cannot start core with gdb. So, if you want to debug an application you have to call 'wait_for_continue' from within your code. Somewhere in your code write something like:
extern "C" void wait_for_continue();
void some_func_in_your_program() { wait_for_continue(); }
This will cause your program to stall in the function above.
* Compile your app * Start './core' from the command line * As mentioned before your program will stop in the 'wait_for_continue' function * Now find out the process id of your program, ('ps -efL | grep Genode') * Start gdb with 'gdb -p <Process ID from ps>' , this will attach gdb to the process * Switch to the Genode output console (where you started core) and hit 'enter', this will cause your program to leave the 'wait_for_continue' function * Switch back to GDB, you now may step and set breakpoints (note: Does not work with all gdb versions), inspect variables, ... .
I hope this helps,
Sebastian
On 09/10/2010 05:34 PM, stephane frenot wrote:
Hello, I have a problem while debugging genode with gdb.
When starting gdb ./core it freeezes on 3 LWP.
Is there a specific gdb configuration in order to reach sub services ?
/stephane
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Stephane Frenot Université de Lyon, INRIA INSA-Lyon, CITI, F-69621, France
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