From: Sam Ravnborg <sam@ravnborg.org>
To: Mikael Pettersson <mikpe@csd.uu.se>
Cc: benh@kernel.crashing.org, linux-kernel@vger.kernel.org,
linuxppc-dev@lists.linuxppc.org, sam@ravnborg.org
Subject: Re: non-modular 2.6 ppc kernels miscompiled by gcc-3.3.1?
Date: Sun, 12 Oct 2003 21:53:55 +0200 [thread overview]
Message-ID: <20031012195355.GA6022@mars.ravnborg.org> (raw)
In-Reply-To: <200310121947.h9CJlmtK015045@harpo.it.uu.se>
On Sun, Oct 12, 2003 at 09:47:48PM +0200, Mikael Pettersson wrote:
> Notice __start___ex_table[]'s address: it's not 4-byte aligned.
> With gcc-3.2.3 it got an 8-byte aligned address in my 2.6 kernel.
>
> vmlinux.lds.S doesn't explicitly align __start___ex_table, so I
> simply put ". = ALIGN(4);" before it and Voila! now it works.
ld will aling the section according to alingment requirements
of the symbols inside the section.
So what happens in your case is that . (current address) is
un-even. But ld alings the section to a 4-byte boundary,
due to one of the symbols inside the section.
So the better fix is to define the lables inside the section,
(read: inside the two '{}').
Care to give my patch a check and report back.
Sam
next prev parent reply other threads:[~2003-10-12 19:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-12 19:47 Mikael Pettersson
2003-10-12 19:53 ` Sam Ravnborg [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-10-12 21:45 Mikael Pettersson
2003-10-12 13:10 Mikael Pettersson
2003-10-12 13:19 ` Benjamin Herrenschmidt
2003-10-12 18:19 ` Sam Ravnborg
2003-10-13 16:05 ` Tom Rini
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