From owner-freebsd-hackers@FreeBSD.ORG  Thu Feb  5 02:31:56 2004
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id ECFD216A4CE
	for <freebsd-hackers@freebsd.org>;
	Thu,  5 Feb 2004 02:31:56 -0800 (PST)
Received: from genua.rfc-networks.ie (genua.rfc-networks.ie [62.77.182.178])
	by mx1.FreeBSD.org (Postfix) with ESMTP id C669943D41
	for <freebsd-hackers@freebsd.org>;
	Thu,  5 Feb 2004 02:31:55 -0800 (PST)
	(envelope-from philip.reynolds@rfc-networks.ie)
Received: from tear.domain (tear [10.0.1.254])
	by genua.rfc-networks.ie (Postfix) with ESMTP id 3B8475CEC
	for <freebsd-hackers@freebsd.org>;
	Thu,  5 Feb 2004 10:32:47 +0000 (GMT)
Received: by tear.domain (Postfix, from userid 1000)
	id 2A64C20F13; Thu,  5 Feb 2004 10:31:54 +0000 (GMT)
Date: Thu, 5 Feb 2004 10:31:54 +0000
From: Philip Reynolds <philip.reynolds@rfc-networks.ie>
To: freebsd-hackers@freebsd.org
Message-ID: <20040205103154.GA99852@rfc-networks.ie>
References: <20040205083945.GB96509@rfc-networks.ie>
	<20040205095636.GF13932@FreeBSD.org.ua>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20040205095636.GF13932@FreeBSD.org.ua>
X-Operating-System: FreeBSD 4.8-STABLE
X-URL: http://www.rfc-networks.ie
Subject: Re: ELF branding / magic numbers
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
Reply-To: philip.reynolds@rfc-networks.ie
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 05 Feb 2004 10:31:57 -0000

Ruslan Ermilov <ru@freebsd.org> 35 lines of wisdom included:
> On Thu, Feb 05, 2004 at 08:39:45AM +0000, Philip Reynolds wrote:
> [...]
> > Does the magic number not then support multiple ABI's per system
> > architecture, or is there some part of the puzzle I'm missing?
> > 
> There's an EI_ABIVERSION byte following the EI_OSABI byte, which
> is both documented in the elf(5) manpage, and is shown in the
> ``readelf -h'' output.

You misunderstood me. 

My question was why is there a need for a PT_NOTE section (which is
a more convaluted way of branding and reading a brand of an elf
binary) if the above sections exist?

-- 
Philip Reynolds                      | RFC Networks Ltd.
philip.reynolds@rfc-networks.ie      | +353 (0)1 8832063
http://people.rfc-networks.ie/~phil/ | www.rfc-networks.ie