xref: /titanic_52/usr/src/lib/libc/amd64/fp/fpcw.s (revision 1959748cbddf37d4734c107dadfa449e076045e3)
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, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27	.ident	"%Z%%M%	%I%	%E% SMI"
28
29	.file	"%M%"
30
31#include <SYS.h>
32
33	ENTRY(_getcw)
34	fstcw	(%rdi)
35	ret
36	SET_SIZE(_getcw)
37
38	ENTRY(_putcw)
39	subq	$8,%rsp
40	movq	%rdi,(%rsp)
41	fldcw	(%rsp)
42	addq	$8,%rsp
43	ret
44	SET_SIZE(_putcw)
45
46	ENTRY(_getsw)
47	fstsw	(%rdi)
48	ret
49	SET_SIZE(_getsw)
50
51	ENTRY(_putsw)
52	andq	$0x3f,%rdi
53	jnz	1f
54	fnclex
55	ret
561:
57	subq	$32,%rsp
58	fnstsw	%ax
59	fnstenv	(%rsp)
60	andw	$0xffc0,%ax
61	orw	%ax,%di
62	movw	%di,4(%rsp)
63	fldenv	(%rsp)
64	addq	$32,%rsp
65	ret
66	SET_SIZE(_putsw)
67
68	ENTRY(_getmxcsr)
69	stmxcsr	(%rdi)
70	ret
71	SET_SIZE(_getmxcsr)
72
73	ENTRY(_putmxcsr)
74	subq	$8,%rsp
75	movq	%rdi,(%rsp)
76	ldmxcsr	(%rsp)
77	addq	$8,%rsp
78	ret
79	SET_SIZE(_putmxcsr)
80