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Re: multithreaded programs on arm-linux


Quoting Daniel Jacobowitz <drow@false.org>:

On Thu, Nov 03, 2005 at 04:51:07PM +0100, Frank Meerkoetter wrote:
>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.

Try thread_db_new_objfile.

thread_db_new_objfile() is called two times. On the first run it prints the library name and than branches on the falg using_thread_db to the label quit. There it returns without executing target_new_objfile_chain (objfile).

The second time the same path is followed but without branching into
the block protected by the flag dejavu.

In neither cases is this line executed:
   /* Now attempt to open a connection to the thread library.  */
   err = td_ta_new_p (&proc_handle, &thread_agent);

Regards,
  Frank



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