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Date: Fri, 8 Feb 2002 17:10:51 -0500
From: Daniel Jacobowitz <dan@debian.org>
To: Florian Lohoff <flo@rfc822.org>
Cc: linux-mips@oss.sgi.com
Subject: Re: gdb disassemble bug
Message-ID: <20020208171051.A1829@nevyn.them.org>
References: <20020208215851.GA18416@paradigm.rfc822.org>
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On Fri, Feb 08, 2002 at 10:58:51PM +0100, Florian Lohoff wrote:
> 
> Hi,
> while debugging arcboot and some interesting crashes related to caching
> etc i found a disassemble bug in gdb 
> 
> 0x88166b58 <probe_scache+188>:	mtc0	zero,gp
> 0x88166b5c <probe_scache+192>:	nop
> 0x88166b60 <probe_scache+196>:	mtc0	zero,sp
> 0x88166b64 <probe_scache+200>:	nop
> 
> mtc0/mfc0 do not address cpu registers but CP0 registers. The decoding
> as "gp" or "sp" is not correct. These are "TagLo" and "TagHi".

  - what version of GDB?
  - does objdump do the same thing?

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer