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Subject: Re: Linux compat issue(s)
To: jdp@polstra.com (John Polstra)
Date: Wed, 16 Oct 1996 10:36:13 +0200 (MET DST)
Cc: sos@FreeBSD.org, hackers@FreeBSD.org
In-Reply-To: <199610160011.RAA08338@austin.polstra.com> from "John Polstra" at Oct 15, 96 05:11:26 pm
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In reply to John Polstra who wrote:
> 
> > I propose that we use some unused space in the ELF header. The ELF
> > header starts with a 16byte char field, where only the first 8 are
> > used in all the ELF/i386 incarnations I've seen, so we can put a
> > 8 char text here for the platform (that can easily be seen with
> > the file(1) cmd too). Simple, easy, nice hack, works....
> 
> This is the kind of hack that I've argued against all along.  But I
> suppose it may be the only choice, if we want to be able to brand an
> existing file.  We can't use my Note section idea, because adding a
> header to the program header part of the file shifts everything else
> down in the file, changes the addresses of things in the program, and
> so forth.  It would be easy to add it in the link phase, but we are not
> reasonably going to be able to control the link phase.
> 
> It _is_ starting to sound like I agree with you, isn't it? :-)

Yep, I told you so :)
Well, I'll see if I can get a couble of hours and implement this in
the kernel & the emulator.

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Soren Schmidt             (sos@FreeBSD.org)             FreeBSD Core Team
               So much code to hack -- so little time.