From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <binutils-return-36344-listarch-binutils=sources.redhat.com@sources.redhat.com>
Received: (qmail 6242 invoked by alias); 5 Nov 2004 11:59:27 -0000
Mailing-List: contact binutils-help@sources.redhat.com; run by ezmlm
Precedence: bulk
List-Subscribe: <mailto:binutils-subscribe@sources.redhat.com>
List-Archive: <http://sources.redhat.com/ml/binutils/>
List-Post: <mailto:binutils@sources.redhat.com>
List-Help: <mailto:binutils-help@sources.redhat.com>, <http://sources.redhat.com/ml/#faqs>
Sender: binutils-owner@sources.redhat.com
Received: (qmail 6234 invoked from network); 5 Nov 2004 11:59:26 -0000
Received: from unknown (HELO smtp003.mail.ukl.yahoo.com) (217.12.11.34)
  by sourceware.org with SMTP; 5 Nov 2004 11:59:26 -0000
Received: from unknown (HELO Kindrogan) (compxsuk@81.136.112.227 with login)
  by smtp003.mail.ukl.yahoo.com with SMTP; 5 Nov 2004 11:59:24 -0000
Reply-To: <jbeniston@compxs.com>
From: "Jon Beniston" <jbeniston@compxs.com>
To: <binutils@sources.redhat.com>
Subject: MEMORY commands in link scripts
Date: Fri, 05 Nov 2004 11:59:00 -0000
Organization: CompXs
Message-ID: <000d01c4c32e$e2a25d60$0bbda8c0@Kindrogan>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
X-SW-Source: 2004-11/txt/msg00099.txt.bz2

Hi,

Is there any way to either use non-constants for the ORIGIN or LENGTH values
in a MEMORY command, or some how access these values else where in a link
script. What I would like to be able to do is, something like:

base =3D 0x100;
size =3D 0x100;

MEMORY {
  ram (rw) : ORIGIN =3D base, LENGTH =3D size;
}

...

SECTIONS {
   PROVIDE(_fstack =3D base + size - 4)
}

Or, alternatively:

SECTIONS {
   PROVIDE(_fstack =3D ORIGIN(ram) + LENGTH(ram) - 4)
}

To put it another way, I would like to be able to override the size /
position of a memory from the command line.

Cheers,
Jon