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Date:      Wed, 09 Sep 1998 22:29:45 -0700
From:      John Polstra <jdp@polstra.com>
To:        sprice@hiwaay.net
Cc:        current@FreeBSD.ORG
Subject:   Re: XFree86 and ELF (beating a dead horse)
Message-ID:  <199809100529.WAA27838@austin.polstra.com>
In-Reply-To: <Pine.OSF.4.02.9809092011260.12979-100000@fly.HiWAAY.net>
References:  <Pine.OSF.4.02.9809092011260.12979-100000@fly.HiWAAY.net>

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In article <Pine.OSF.4.02.9809092011260.12979-100000@fly.HiWAAY.net>,
Steve Price  <sprice@hiwaay.net> wrote:
> 
> Just to followup on my own mail, all of the
> "undefined reference" errors that I am seeing
> seem to all be from .s files.  It seems it is
> looking for 'symbol' and as(1) is outputting
> '_symbol'.

That's because with a.out, a C variable "foo" is called "_foo" in
assembler.  But with ELF, it is called just plain "foo".  So when you
reference a C symbol from assembly language, it has to be handled
differently depending on the object file format.

This needs to be solved using either the CNAME/HIDENAME macros from
<machine/asmacros.h>, or using #defines as in <machine/asnames.h>.

John
--
   John Polstra                                       jdp@polstra.com
   John D. Polstra & Co., Inc.                Seattle, Washington USA
   "Self-knowledge is always bad news."                 -- John Barth

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