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From: Joel Brobecker <brobecker@adacore.com>
To: Yuri <yuri@rawbw.com>
Cc: Tom Tromey <tromey@redhat.com>,
	gdb@sourceware.org,	Steven Kreuzer <skreuzer@FreeBSD.org>
Subject: Re: 7.3 is broken on FreeBSD
Date: Thu, 07 Jul 2011 04:32:00 -0000	[thread overview]
Message-ID: <20110707043156.GA15572@adacore.com> (raw)
In-Reply-To: <4E15165A.10303@rawbw.com>

> gdb-7.3 crashes on this line:
> 563       dr_status_mirror = i386_dr_low.get_status ();
> (gdb) p i386_dr_low
> $1 = {set_control = 0, set_addr = 0, reset_addr = 0, get_status = 0,
> unset_status = 0, debug_register_length = 0}

But i386_dr_low is supposed to be set at GDB startup by
_initialize_i386fbsd_nat:

    void
    _initialize_i386fbsd_nat (void)
    {
      struct target_ops *t;
    
      /* Add some extra features to the common *BSD/i386 target.  */
      t = i386bsd_target ();
    
    #ifdef HAVE_PT_GETDBREGS
    
      i386_use_watchpoints (t);
    
      i386_dr_low.set_control = i386bsd_dr_set_control;
      i386_dr_low.set_addr = i386bsd_dr_set_addr;
      i386_dr_low.reset_addr = i386bsd_dr_reset_addr;
      i386_dr_low.get_status = i386bsd_dr_get_status;
      i386_set_debug_register_length (4);
    
    #endif /* HAVE_PT_GETDBREGS */

Is this happening? And if yes, then who is overriding the value?
If not, why is it not happening, since you confirmed that 
HAVE_PT_GETDBREGS is defined.

-- 
Joel


  reply	other threads:[~2011-07-07  4:32 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-06 20:41 Yuri
2011-07-06 20:59 ` Tom Tromey
2011-07-06 21:40   ` Yuri
2011-07-06 22:42     ` Joel Brobecker
2011-07-06 22:47       ` Yuri
2011-07-06 22:55         ` Joel Brobecker
2011-07-06 23:12           ` Yuri
2011-07-06 23:24             ` Joel Brobecker
2011-07-06 23:41               ` Yuri
2011-07-07  1:59                 ` Joel Brobecker
2011-07-07  2:14                   ` Yuri
2011-07-07  4:32                     ` Joel Brobecker [this message]
2011-07-07  5:48                       ` Yuri
2011-07-07 14:18                         ` Tom Tromey
2011-07-06 23:39           ` Yuri

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