linux-kernel - Re: PATCH/RFC: bzImage payload as compressed ELF file.

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Message-ID: <479F71B6.2010305@zytor.com>
Date:	Tue, 29 Jan 2008 10:34:30 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Ian Campbell <ijc@...lion.org.uk>, linux-kernel@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: PATCH/RFC: bzImage payload as compressed ELF file.

Jeremy Fitzhardinge wrote:
> H. Peter Anvin wrote:
>> It's also easy enough to either use objdump -h or nm to extract info 
>> from vmlinux; or for some of the simpler stuff, just parse the ELF 
>> directly (perhaps using libelf).
>>
>> There is also the -R option to ld, which imports symbols from one 
>> executable into another. 
> 
> Yes, I used -R, though it was necessary to generate a copy of vmlinux 
> with a filtered symbol list to prevent collisions.  But I'm not sure any 
> of this is necessary with Ian's approach.
> 

Probably isn't.  He just need the start and possibly length of the 
payload section, which should be objdump -h or equivalently reading the 
ELF section table.

	-hpa
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