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Re: Branch bug in gas on MIPS

To: Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de>
Subject: Re: Branch bug in gas on MIPS
From: Daniel Jacobowitz <dan@debian.org>
Date: Wed, 18 Aug 2004 13:48:55 -0400
Cc: Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org, binutils@sources.redhat.com
In-reply-to: <20040818155819.GJ23756@rembrandt.csv.ica.uni-stuttgart.de>
Mail-followup-to: Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de>, Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org, binutils@sources.redhat.com
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References: <20040817160110.GA32594@linux-mips.org> <20040818155819.GJ23756@rembrandt.csv.ica.uni-stuttgart.de>
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On Wed, Aug 18, 2004 at 05:58:19PM +0200, Thiemo Seufer wrote:
> Ralf Baechle wrote:
> > Below little test case demonstrates a gas bug that results in swapping
> > of the two branch instructions and use of bogus destination addresses
> > for the first of the two branches.
> > 
> > [ralf@lappi tmp]$ cat s.s
> > 1:      beqzl   $2, 1b
> >         beq     $4, $5, 1b
> > [ralf@lappi tmp]$ mips-linux-as -mips2 -o s.o s.s
> > [ralf@lappi tmp]$ mips-linux-objdump -d s.o
> >  
> > s.o:     file format elf32-tradbigmips
> >  
> > Disassembly of section .text:
> >  
> > 00000000 <.text>:
> >    0:   1085ffff        beq     a0,a1,0x0
> >    4:   00000000        nop
> >    8:   50400000        beqzl   v0,0xc
> >    c:   00000000        nop
> 
> I applied the appended patch. Daniel, I think this should also go
> in the branch.

OK.

-- 
Daniel Jacobowitz

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