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From: "Vladimir Vorobyov" <vladimir.vorobyov@iss.org.ua>
To: "Daniel Jacobowitz" <drow@false.org>, "Andreas Schwab" <schwab@suse.de>
Cc: <gdb@sources.redhat.com>, "Andreas Schwab" <schwab@suse.de>
References: <200411191233.22357.vladimir.vorobyov@iss.org.ua> <200411191641.15822.vladimir.vorobyov@iss.org.ua> <20041120013220.GB27485@nevyn.them.org> <200411201427.13557.vladimir.vorobyov@iss.org.ua> <20041120164209.GA15174@nevyn.them.org>
Subject: Re: pthreads debug with gdbserver
Date: Sat, 20 Nov 2004 17:38:00 -0000
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> > As I said in my first message the breakpoint is hit exactly 3 times. I
found
> > that current_sos in solib-svr4.c can not find any libraries. It was
because
> > first_link_map_member returned NULL. After this I found that
> > SVR4_FETCH_LINK_MAP_OFFSETS did not return correct offsets (which are
correct
> > for me? ilp32?). I tried to follow those gdbach_data calls but it was
too
> > difficult. I just assigned svr4_ilp32_fetch_link_map_offsets to
> > SVR4_FETCH_LINK_MAP_OFFSETS (how to do it correctly?).
> > After this with every shlib breakpoint hit gdb loads appropriate shared
lib
> > BUT gdbserver reports "Target does not support breakpoints" 3 times for
each
> > library loaded. What does it mean ?
> > I still receive SIG32, info threads still shows only one thread. "info
shared"
> > shows all libraries that are loaded and td_ta_new() call now returns
> > successfully.
>
> Take a look at the source code to gdbserver.  Andreas, now I remember
> why I enabled thread_db support on a per-target basis - there are other
> support routines that have to be written.

> Yes, I have noticed that, too.  I'm currently trying to get it working for
> m68k (plus support for PTRACE_GETREGS).


What routines should I add?

Also I've added set_solib_svr4_fetch_link_map_offsets (gdbarch,
svr4_ilp32_fetch_link_map_offsets) to m68klinux-tdep.c.
It fixed the problem with bad link_map_offsets.

Regards,
Vladimir.