From owner-freebsd-arm@FreeBSD.ORG  Sat Dec 16 18:36:18 2006
Return-Path: <owner-freebsd-arm@FreeBSD.ORG>
X-Original-To: freebsd-arm@freebsd.org
Delivered-To: freebsd-arm@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 011C716A47B
	for <freebsd-arm@freebsd.org>; Sat, 16 Dec 2006 18:36:18 +0000 (UTC)
	(envelope-from imp@bsdimp.com)
Received: from harmony.bsdimp.com (vc4-2-0-87.dsl.netrack.net [199.45.160.85])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 8A08F43CB9
	for <freebsd-arm@freebsd.org>; Sat, 16 Dec 2006 18:36:17 +0000 (GMT)
	(envelope-from imp@bsdimp.com)
Received: from localhost (localhost [127.0.0.1])
	by harmony.bsdimp.com (8.13.4/8.13.4) with ESMTP id kBGIXRCL095956;
	Sat, 16 Dec 2006 11:33:27 -0700 (MST) (envelope-from imp@bsdimp.com)
Date: Sat, 16 Dec 2006 11:34:27 -0700 (MST)
Message-Id: <20061216.113427.-490997164.imp@bsdimp.com>
To: ticso@cicely.de, ticso@cicely12.cicely.de
From: "M. Warner Losh" <imp@bsdimp.com>
In-Reply-To: <20061216130957.GL75351@cicely12.cicely.de>
References: <20061216130957.GL75351@cicely12.cicely.de>
X-Mailer: Mew version 4.2 on Emacs 21.3 / Mule 5.0 (SAKAKI)
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0
	(harmony.bsdimp.com [127.0.0.1]);
	Sat, 16 Dec 2006 11:33:28 -0700 (MST)
Cc: freebsd-arm@freebsd.org
Subject: Re: Bus error with ppp
X-BeenThere: freebsd-arm@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Porting FreeBSD to the StrongARM Processor <freebsd-arm.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arm>,
	<mailto:freebsd-arm-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arm>
List-Post: <mailto:freebsd-arm@freebsd.org>
List-Help: <mailto:freebsd-arm-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arm>,
	<mailto:freebsd-arm-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 16 Dec 2006 18:36:18 -0000

In message: <20061216130957.GL75351@cicely12.cicely.de>
            Bernd Walter <ticso@cicely12.cicely.de> writes:
: I have no clue where to start debugging now.

The following are issues for arm that are differences with x86:
	o unaligned access (which I think generates a SEGV, not BUS)
	o Different packing and alignment of data structures causing
	  mismatches between x86 and arm representations (x86 may
	  match external ones, while arm doesn't w/o __packed).
	o Characters are unsigned on arm and signed on i386.

You might want to try a ppp with symbols to see where it is dying.

Warner