/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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
 * or http://www.opensolaris.org/os/licensing.
 * 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 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

	.ident	"%Z%%M%	%I%	%E% SMI"

	.file	"%M%"

#include "SYS.h"

	ENTRY(__builtin_alloca)
	popl	%ecx			/ grab our return address
	movl	(%esp),%eax		/ get argument
	addl	$3,%eax
	andl	$0xfffffffc,%eax	/ round up to multiple of 4
	subl	%eax,%esp		/ leave requested space on stack
	leal	4(%esp),%eax		/ adjust, accounting for the "size" arg
	pushl	%ecx			/ put back return address
	ret
	SET_SIZE(__builtin_alloca)