From owner-freebsd-arm@FreeBSD.ORG  Thu Apr 21 17:11:21 2011
Return-Path: <owner-freebsd-arm@FreeBSD.ORG>
Delivered-To: freebsd-arm@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id A37D31065675
	for <freebsd-arm@freebsd.org>; Thu, 21 Apr 2011 17:11:21 +0000 (UTC)
	(envelope-from damjan.marion@gmail.com)
Received: from mail-ew0-f54.google.com (mail-ew0-f54.google.com
	[209.85.215.54])
	by mx1.freebsd.org (Postfix) with ESMTP id 3288A8FC17
	for <freebsd-arm@freebsd.org>; Thu, 21 Apr 2011 17:11:20 +0000 (UTC)
Received: by ewy1 with SMTP id 1so715632ewy.13
	for <multiple recipients>; Thu, 21 Apr 2011 10:11:19 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=domainkey-signature:from:content-type:content-transfer-encoding
	:subject:date:message-id:cc:to:mime-version:x-mailer;
	bh=cul6BnAYNM1R38eyc3nyAipJds/5M6LHPNX/evwnfhw=;
	b=Ojgf2N+mmvkMva8eBR6L/JlMsicaC2It6OtCMOWFCmm+YbymIDVB6IOwi+jxBSZvsu
	9huB2ZW0r2DkRtRyqUEldAlsWL8yJKdsXIGSs5Nsq6ic8lsWIIxRLOE/Cbz1F1mFWbMD
	B4BAHE+HeGQWdhx0v8R4ONX29MmL+SmIWXl40=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;
	h=from:content-type:content-transfer-encoding:subject:date:message-id
	:cc:to:mime-version:x-mailer;
	b=Jwged3blO2Fx3NS8WC7fKuLuZuB63d7Yp5RvkbZ/FgF2jb9GkoDYqY3oUU+2PBLET3
	ksJl3uaKS0YyuzHUe50ic8BJT36qzk2A+TEVbgp9N7vLPWh0R0+eIWuOmzTjNKwt9ZY2
	zfkFFGYclPEUuPNSLyX/IX4OJ/DWJMt1uSU9s=
Received: by 10.213.28.144 with SMTP id m16mr779365ebc.119.1303405879661;
	Thu, 21 Apr 2011 10:11:19 -0700 (PDT)
Received: from [192.168.123.4] (cpe-109-60-66-194.zg3.cable.xnet.hr
	[109.60.66.194])
	by mx.google.com with ESMTPS id y7sm1480957eeh.0.2011.04.21.10.11.18
	(version=TLSv1/SSLv3 cipher=OTHER);
	Thu, 21 Apr 2011 10:11:18 -0700 (PDT)
From: Damjan Marion <damjan.marion@gmail.com>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: quoted-printable
Date: Thu, 21 Apr 2011 19:11:16 +0200
Message-Id: <77B4B008-D5A6-48A7-BAF9-E5084BF098DA@gmail.com>
To: freebsd-toolchain@freebsd.org,
 freebsd-arm@freebsd.org
Mime-Version: 1.0 (Apple Message framework v1084)
X-Mailer: Apple Mail (2.1084)
Cc: 
Subject: kernel cross-compiled with clang for ARM architecture
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: Thu, 21 Apr 2011 17:11:21 -0000


Hi,

I managed to cross-compile latest -CURRENT + Ben's patches with clang =
and compiled kernel boots on pandaboard.
Pandaboard support is still work in progress, but clang compiled kernel =
boots up to the same point like gcc version.

I  used latest clang/llvm from svn with following:

CC=3D"/opt/llvm/bin/clang -mcpu=3Dcortex-a9 -ccc-host-triple =
arm-unknown-freebsd -mfloat-abi=3Dsoft"
WERROR=3D""

This works both on FreeBSD and Mac OS X host.

Issues:
 - integrated assembler for ARM doesn't work properly ( I filled bugs =
[1] and [2])
 - gnu as works ok but newer version of binutils is needed which =
supports ARMv7 instructions
 - i had to patch [3] clang to invoke cross linker properly (thanks to =
guys form #freebsd-clang )


Regards,

Damjan

[1] http://llvm.org/bugs/show_bug.cgi?id=3D9760
[2] http://llvm.org/bugs/show_bug.cgi?id=3D9762
[3] http://llvm.org/bugs/show_bug.cgi?id=3D9777