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Re: gdb for mips64

To: David Daney <ddaney@caviumnetworks.com>
Subject: Re: gdb for mips64
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Tue, 26 Oct 2010 13:47:48 +0100 (BST)
Cc: Camm Maguire <camm@maguirefamily.org>, debian-mips@lists.debian.org, Frederick Isaac <freddyisaac@gmail.com>, gcl-devel@gnu.org, linux-mips <linux-mips@linux-mips.org>
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On Mon, 25 Oct 2010, David Daney wrote:

> I don't think a 32-bit gdb can debug 64-bit processes :-(.

 And it should (assuming ptrace(2) gets things right) -- if what you say 
is true, then it's a bug rather than a deliberate design decision.  To add 
some irony, MIPS GDB is always 64-bit internally.

> > (gdb) r
> > Starting program: /home/camm/gcl-2.6.8pre/unixport/saved_pre_gcl
> > /home/wingsun/develop/build/gdb/gdb-6.8/gdb/mips-tdep.c:603: internal-error:
> > bad register size
> > A problem internal to GDB has been detected,
> > further debugging may prove unreliable.

 Try a newer version though -- GDB 7.2 has been out for a (short) while 
now.  You're missing 2.5 years of development.  If still unsuccessful with 
a pristine release from ftp.gnu.org, then file a bug report at 
http://sourceware.org/gdb/bugs/.

  Maciej

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