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On Fri, Nov 04, 2005 at 04:39:30PM +0100, Frank Meerkoetter wrote:Quoting Daniel Jacobowitz <drow@false.org>:
>On Fri, Nov 04, 2005 at 10:23:21AM +0100, Frank Meerkoetter wrote: >>Quoting Daniel Jacobowitz <drow@false.org>: >> >>>On Thu, Nov 03, 2005 at 06:50:47PM +0100, Frank Meerkoetter wrote: >>>>objfile is NULL, why i couldn't figure out. >>> >>>That should be true the first time but not the second, if you've used >>>"file". >> >>Ok. The first time objfile is null. The second time target_has_execution >>is false. > >It doesn't get called after you say "run"? Is this a static executable >you're debugging?
It does get called. Sorry, i tested the wrong thing.
[...] /* Now attempt to open a connection to the thread library. */ err = td_ta_new_p (&proc_handle, &thread_agent);
It returns TD_NOLIBTHREAD.
I know from stepping through thread_db_load() that That td_ta_new_p = verbose_dlsym (handle, "td_ta_new"); was successfull.
verbose_dlsym() also produced now warning that it couldn't find a certain symbol.
td_ta_new seems to fail. I've downloaded the linuxThreads source but can't find any references to "td_ta_new".
It's in libthread_db, which is linuxthreads_db/ in the LinuxThreads source.
It sounds like your libpthread.so has been stripped of some required symbols.
I found it. glibc-linuxthreads-2.2.5.tar.gz contains linuxthreads/ and linuxthreads_db/ both at the root level... So i missed it at the first look.
td_err_e td_ta_new (struct ps_prochandle *ps, td_thragent_t **ta) { [...] /* Get the global event mask. This is one of the variables which are new in the thread library to enable debugging. If it is not available we cannot debug. */ if (td_lookup (ps, PTHREAD_THREADS_EVENTS, &addr) != PS_OK) return TD_NOLIBTHREAD;
It seems that td_lookup fails. td_lookup is a wrapper around ps_pglobal_lookup defined in td_symbol_list.c.
Regards, Frank
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