zero.s revision b02637af6dc592eb1f43cb4c74f06268648dbd2d
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1988 AT&T
* All Rights Reserved
*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Routine to zero out a section of memory (the tail end of the data segment
* up to a page boundary). First nibble off any bytes up to the first double
* aligned word, and then clear doubles until the byte count is zero. Note,
* this assumes the count specified has been rounded to end on a double word
* boundary.
*
* %o0 = addr, %o1 = len
*/
#if defined(lint)
void
{
while (len-- > 0)
*addr++ = 0;
}
#else
#include <sys/asm_linkage.h>
0:
3:
2:
1:
#endif