Re: [PATCH] i386: vmlinux.lds.S Distinguish absolute symbols

From: Eric W. Biederman
Date: Fri Jul 29 2005 - 19:33:32 EST


Sam Ravnborg <sam@xxxxxxxxxxxx> writes:

> On Fri, Jul 29, 2005 at 01:35:04PM -0600, Eric W. Biederman wrote:
>> Currently in the linker script we have several labels
>> marking the beginning and ending of sections that
>> are outside of sections, making them absolute symbols.
>
> They are outside the sections for a very specific reason.
> If moved inside the section they sometimes got unexpected values due to
> the alignment that ld impose on the section itself.
>
> I recall that when Kai Germaschewski long time ago started the
> unification of the vmlinux.lds files some people had boot problems
> exactly because the label was defined inside the section and therefore
> ld caused it to have another value as if it was placed outside the
> section.

I remember seeing something like that. I don't know if those problems
apply to a modern ld, but it is certainly worth looking into.

> I no longer recall the precise details of what happened.
> Google may help you...

Thanks.

Eric
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