linux-kernel - Re: [PATCH] Translate asm version of ELFNOTE macro into preprocessor macro

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Message-Id: <1156346074.12949.129.camel@localhost.localdomain>
Date:	Wed, 23 Aug 2006 16:14:34 +0100
From:	Ian Campbell <Ian.Campbell@...Source.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Andrew Morton <akpm@...l.org>,
	Virtualization <virtualization@...ts.osdl.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [PATCH] Translate asm version of ELFNOTE macro into
	preprocessor macro

On Wed, 2006-08-23 at 07:49 -0700, Jeremy Fitzhardinge wrote:
> Ian Campbell wrote:
> > The first is that older gas does not support :varargs in .macro
> > definitions (in my testing 2.17 does while 2.15 does not, I don't know
> > when it became supported). The Changes file says binutils >= 2.12 so I
> > think we need to avoid using it. There are no other uses in mainline or
> > -mm. Old gas appears to just ignore it so you get "too many arguments"
> > type errors.
> >   
> OK, seems reasonable.  Eric Biederman solved this by having NOTE/ENDNOTE 
> (or something like that) in his "bzImage with ELF header" patch, but I 
> don't remember it being used in any way which is incompatible with using 
> a CPP macro.

I can't find that patch, does NOTE/ENDNOTE just do the push/pop .note
section?

That would solve the problem with the first argument of the macro being
a string but the final argument could still be for .asciz note contents.

Ian.


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