From owner-svn-src-head@FreeBSD.ORG  Wed Nov 17 19:28:49 2010
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 3B4AD1065672;
	Wed, 17 Nov 2010 19:28:49 +0000 (UTC)
	(envelope-from andreast@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 2A7068FC1C;
	Wed, 17 Nov 2010 19:28:49 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id oAHJSnAf001882;
	Wed, 17 Nov 2010 19:28:49 GMT
	(envelope-from andreast@svn.freebsd.org)
Received: (from andreast@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id oAHJSnao001880;
	Wed, 17 Nov 2010 19:28:49 GMT
	(envelope-from andreast@svn.freebsd.org)
Message-Id: <201011171928.oAHJSnao001880@svn.freebsd.org>
From: Andreas Tobler <andreast@FreeBSD.org>
Date: Wed, 17 Nov 2010 19:28:49 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-head@freebsd.org
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r215436 - head/sys/boot/powerpc/ofw
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
	<svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 17 Nov 2010 19:28:49 -0000

Author: andreast
Date: Wed Nov 17 19:28:48 2010
New Revision: 215436
URL: http://svn.freebsd.org/changeset/base/215436

Log:
  Make sure the .bss is cleared at the beginning. The pSeries OF ELF loader does
  not clear .bss automatically.
  
  Approved by:	nwhitehorn (mentor)

Modified:
  head/sys/boot/powerpc/ofw/start.c

Modified: head/sys/boot/powerpc/ofw/start.c
==============================================================================
--- head/sys/boot/powerpc/ofw/start.c	Wed Nov 17 19:25:37 2010	(r215435)
+++ head/sys/boot/powerpc/ofw/start.c	Wed Nov 17 19:28:48 2010	(r215436)
@@ -50,7 +50,20 @@ _start:				\n\
 	addi	%r1,%r1,stack@l	\n\
 	addi	%r1,%r1,16384	\n\
 				\n\
-	b	startup		\n\
+	/* Clear the .bss!!! */	\n\
+	li      %r0,0		\n\
+	lis     %r8,_edata@ha	\n\
+	addi    %r8,%r8,_edata@l\n\
+	lis     %r9,_end@ha	\n\
+	addi    %r9,%r9,_end@l	\n\
+				\n\
+1:	cmpw    0,%r8,%r9	\n\
+	bge     2f		\n\
+	stw     %r0,0(%r8)	\n\
+	addi    %r8,%r8,4	\n\
+	b       1b		\n\
+				\n\
+2:	b	startup		\n\
 ");
 
 void