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Re: [BUG] jecxz

From: Denis Vlasenko <vda at port dot imtp dot ilyichevsk dot odessa dot ua>
To: "H. J. Lu" <hjl at lucon dot org>
Cc: binutils <binutils at sources dot redhat dot com>
Date: Thu, 31 Oct 2002 10:56:11 -0200
Subject: Re: [BUG] jecxz
References: <200210301607.g9UG7Wp08763@Port.imtp.ilyichevsk.odessa.ua> <200210301701.g9UH1np09014@Port.imtp.ilyichevsk.odessa.ua> <20021030105638.A24013@lucon.org>
Reply-to: vda at port dot imtp dot ilyichevsk dot odessa dot ua

On 30 October 2002 16:56, H. J. Lu wrote:
> On Wed, Oct 30, 2002 at 07:54:01PM -0200, Denis Vlasenko wrote:
> > On 30 October 2002 18:59, Denis Vlasenko wrote:
> > > bug.s
> > > =====
> > > .text
> > > .align 4
> > > .globl csum_ssemmxplus
> > >
> > > csum_ssemmxplus:
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;
> > > jecxz 90f
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > > nop;nop;nop;nop;nop;nop;nop;nop;
> > > 90:
> > > nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
> > >
> > > as silently generates *NEGATIVE* jump address for that jecxz!
> >
> > Similar bug just attacked me with loop instruction.
> > The worst thing is _silent_ generation of wrong object code.
>
> I got
>
> bug.s: Assembler messages:
> bug.s:8: Error: value of 168 too large for field of 1 bytes at
> 0000000000000015
>
> That is binutils from CVS on 20021029.

Must be fixed then.
I don't yet use versions from CVS, will try latest release.
--
vda

References:
- [BUG] jecxz
  - From: Denis Vlasenko
- Re: [BUG] jecxz
  - From: Denis Vlasenko
- Re: [BUG] jecxz
  - From: H. J. Lu

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