Date: Thu, 19 Dec 2002 16:08:10 -0800 From: Peter Wemm <peter@wemm.org> To: Bruce Evans <bde@zeta.org.au> Cc: "David O'Brien" <obrien@FreeBSD.org>, Poul-Henning Kamp <phk@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/boot/i386/boot2 Makefile boot1.s Message-ID: <20021220000810.139972A7EA@canning.wemm.org> In-Reply-To: <20021217071156.H17797-100000@gamplex.bde.org>
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Bruce Evans wrote:
> On Mon, 16 Dec 2002, David O'Brien wrote:
>
> > On Sun, Dec 15, 2002 at 08:31:45PM +1100, Bruce Evans wrote:
> > > Please remove the alignment hacks (Makefile rev.1.25) while you are there
.
> > > Breakage of -[fm]align-* seems to have been fixed in gcc, so the hacks
> > > make no difference except to reduce the size of boot2.o's data by 3 bytes
> > > (I think the 3 bytes is wasted at link time).
> >
> > I'd rather leave them in to get the 3 bytes -- believe it or not it has
> > made a difference in the past.
>
> It doesn't any difference because the 3 bytes is wasted at link time.
> The data section has size 29, but sections are padded to 4-byte boundaries,
> at least for ELF objects with the default linker scripts, so 29 becomes 32
> the same as if it had been padded internally for aligment.
In my case, it was a *final* object size difference of 3 bytes in /boot/
boot2. I found that turning off the sed caused quite a bit of bloat, so
obviously we dont have all the necessary -[fm]align-*'s in the Makefile
that you have.
Cheers,
-Peter
--
Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com
"All of this is for nothing if we don't go to the stars" - JMS/B5
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