1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
23 */
24/*
25 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
26 * Use is subject to license terms.
27 */
28
29	.file	"copysign.s"
30
31#include "libm.h"
32LIBM_ANSI_PRAGMA_WEAK(copysign,function)
33
34	ENTRY(copysign)
35	movl    8(%esp),%eax		/ eax <-- hi_32(x)
36	movl    16(%esp),%ecx		/ ecx <-- hi_32(y)
37	andl    $0x7fffffff,%eax	/ eax <-- hi_32(abs(x))
38	andl    $0x80000000,%ecx	/ ecx[31] <-- sign_bit(y)
39	orl     %ecx,%eax		/ eax <-- hi_32(copysign(x,y))
40	movl	4(%esp),%ecx		/ ecx <-- lo_32(x)
41					/	= lo_32(copysign(x,y))
42	subl	$8,%esp			/ set up loading dock for result
43	movl	%ecx,(%esp)		/ copy lo_32(result) to loading dock
44	movl    %eax,4(%esp)		/ copy hi_32(result) to loading dock
45	fldl    (%esp)			/ load copysign(x,y)
46	fwait				/ in case fldl causes exception
47	addl	$8,%esp			/ restore stack-pointer for return
48	ret
49	.align	4
50	SET_SIZE(copysign)
51