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Re: Gas can't handle prefix generated by gcc
- From: "H. J. Lu" <hjl at lucon dot org>
- To: Zack Weinberg <zack at codesourcery dot com>
- Cc: gcc at gcc dot gnu dot org, Jan Beulich <JBeulich at novell dot com>,binutils at sources dot redhat dot com
- Date: Fri, 23 Jul 2004 13:28:04 -0700
- Subject: Re: Gas can't handle prefix generated by gcc
- References: <s100c3d9.002@emea1-mh.id2.novell.com> <20040723140035.GA31423@lucon.org> <87y8laboyn.fsf@codesourcery.com> <20040723185839.GA4477@lucon.org> <87d62mbkg3.fsf@codesourcery.com> <877jsubj1f.fsf@codesourcery.com>
On Fri, Jul 23, 2004 at 12:49:48PM -0700, Zack Weinberg wrote:
> Zack Weinberg <zack@codesourcery.com> writes:
>
> > "H. J. Lu" <hjl@lucon.org> writes:
> >
> >> It seems that gcc uses a prefix syntax which gas doesn't handle. Does
> >> gcc always use " ; " as prefix separator?
> >
> > Yes. It does that for cs/ds on branch hints, it does that for "rep"
> > on string instructions, it does that for "lock" on atomic updates.
>
> Correction - it uses either " ; " or \n\t in all the above cases.
>
It looks like a gcc bug to me. Assembler has a way to define prefixes
for an instruction. Unfortunately, gcc uses something else. I will
close the assembler bug.
H.J.