From: Jeffrey A Law <law@cygnus.com>
To: Dave Love <d.love@dl.ac.uk>
Cc: Craig Burley <burley@gnu.org>, egcs@cygnus.com
Subject: Re: ix86 double alignment (was Re: egcs-1.1 release schedule)
Date: Wed, 24 Jun 1998 21:23:00 -0000 [thread overview]
Message-ID: <25466.898732790@hurl.cygnus.com> (raw)
In-Reply-To: <rzqd8byol2i.fsf@djlvig.dl.ac.uk>
In message < rzqd8byol2i.fsf@djlvig.dl.ac.uk >you write:
> >>>>> "Craig" == Craig Burley <burley@gnu.org> writes:
>
> Craig> My current assumption is we are shooting for only 8-byte
> Craig> alignment of the stack frame to obtain 8-byte alignment of
> Craig> doubles within the frame. I think crt0 (or whatever) already
> Craig> assures this, but don't know for sure about that or whether it
> Craig> further assures 16-byte or 32-byte alignment.
>
> glibc2 does 8-byte alignment, Linux libc5 only does 4-byte (or did in
> the last version I checked, but seemed easy to change); likewise
> DJGPP. I can't remember the story on Cygwin -- is that glibc2-based?
> No info on x86 Solaris et al.
While these are important (since you have to know what alignment you
were initially given), the bigger issue is keeping the proper alignment
in the compiler itself. That's the real work here :-0
jeff
next prev parent reply other threads:[~1998-06-24 21:23 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-06-23 3:32 John Wehle
1998-06-23 15:06 ` Craig Burley
1998-06-23 22:55 ` Jeffrey A Law
1998-06-24 10:08 ` Dave Love
1998-06-24 21:23 ` Jeffrey A Law [this message]
-- strict thread matches above, loose matches on Subject: below --
1998-06-24 17:12 John Wehle
1998-06-24 21:23 ` Jeffrey A Law
1998-06-23 10:23 ix86 `double' " John Wehle
1998-06-23 14:56 ` Craig Burley
1998-06-23 22:55 ` Jeffrey A Law
1998-06-22 5:19 egcs-1.1 release schedule David S. Miller
1998-06-22 18:20 ` ix86 double alignment (was Re: egcs-1.1 release schedule) Craig Burley
1998-06-23 3:32 ` Jeffrey A Law
1998-06-23 5:13 ` Craig Burley
1998-06-23 3:32 ` David S. Miller
1998-06-23 6:30 ` Craig Burley
1998-06-21 23:07 egcs-1.1 release schedule Jeffrey A Law
1998-06-22 12:04 ` ix86 `double' alignment (was Re: egcs-1.1 release schedule) Craig Burley
1998-06-23 3:32 ` Jeffrey A Law
1998-06-23 5:13 ` Craig Burley
1998-06-24 2:28 ` Jeffrey A Law
1998-06-24 14:50 ` Craig Burley
1998-06-25 0:25 ` Jeffrey A Law
1998-06-25 9:59 ` Tim Hollebeek
1998-06-28 18:01 ` Marc Lehmann
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