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Re: multithreaded programs on arm-linux


Quoting Daniel Jacobowitz <drow@false.org>:
[...]
I'm not using the gdbserver but rather running the gdb on
the target. The reason is that i didn't managed to
remote debug a program which is dynamically linked.

I assume gdb is linked against libthread_db.so

GDB uses dlopen to get at libthread_db.so. Does it do that? Does initialization fail?

thread_db_load() which contains the dlopen() call is successfull run. The end of thread_db_load() is reached and 1 is returned.

You'll need to attach a debugger to gdb and look at thread_db_init.
The first call will generally fail but a later one should succeed.

frank@linux:~/gdb/gdb-6.3> global thread_db_init gdb/gdbserver/thread-db.c gdb/thread-db.c

thread_db_init of the gdbserver could fail but not thread_db_init
of the gdb.

Regards,
  Frank



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