xref: /illumos-gate/usr/src/lib/libc/i386/fp/fpcw.S (revision 5d9d9091f564c198a760790b0bfa72c44e17912b)
1*5d9d9091SRichard Lowe/*
2*5d9d9091SRichard Lowe * CDDL HEADER START
3*5d9d9091SRichard Lowe *
4*5d9d9091SRichard Lowe * The contents of this file are subject to the terms of the
5*5d9d9091SRichard Lowe * Common Development and Distribution License (the "License").
6*5d9d9091SRichard Lowe * You may not use this file except in compliance with the License.
7*5d9d9091SRichard Lowe *
8*5d9d9091SRichard Lowe * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*5d9d9091SRichard Lowe * or http://www.opensolaris.org/os/licensing.
10*5d9d9091SRichard Lowe * See the License for the specific language governing permissions
11*5d9d9091SRichard Lowe * and limitations under the License.
12*5d9d9091SRichard Lowe *
13*5d9d9091SRichard Lowe * When distributing Covered Code, include this CDDL HEADER in each
14*5d9d9091SRichard Lowe * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*5d9d9091SRichard Lowe * If applicable, add the following below this CDDL HEADER, with the
16*5d9d9091SRichard Lowe * fields enclosed by brackets "[]" replaced with your own identifying
17*5d9d9091SRichard Lowe * information: Portions Copyright [yyyy] [name of copyright owner]
18*5d9d9091SRichard Lowe *
19*5d9d9091SRichard Lowe * CDDL HEADER END
20*5d9d9091SRichard Lowe */
21*5d9d9091SRichard Lowe/*
22*5d9d9091SRichard Lowe * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
23*5d9d9091SRichard Lowe * Use is subject to license terms.
24*5d9d9091SRichard Lowe */
25*5d9d9091SRichard Lowe
26*5d9d9091SRichard Lowe	.file	"fpcw.s"
27*5d9d9091SRichard Lowe
28*5d9d9091SRichard Lowe#include <SYS.h>
29*5d9d9091SRichard Lowe
30*5d9d9091SRichard Lowe	ENTRY(_getcw)
31*5d9d9091SRichard Lowe	movl	4(%esp),%eax
32*5d9d9091SRichard Lowe	fstcw	(%eax)
33*5d9d9091SRichard Lowe	ret
34*5d9d9091SRichard Lowe	SET_SIZE(_getcw)
35*5d9d9091SRichard Lowe
36*5d9d9091SRichard Lowe	ENTRY(_putcw)
37*5d9d9091SRichard Lowe	fldcw	4(%esp)
38*5d9d9091SRichard Lowe	ret
39*5d9d9091SRichard Lowe	SET_SIZE(_putcw)
40*5d9d9091SRichard Lowe
41*5d9d9091SRichard Lowe	ENTRY(_getsw)
42*5d9d9091SRichard Lowe	movl	4(%esp),%eax
43*5d9d9091SRichard Lowe	fstsw	(%eax)
44*5d9d9091SRichard Lowe	ret
45*5d9d9091SRichard Lowe	SET_SIZE(_getsw)
46*5d9d9091SRichard Lowe
47*5d9d9091SRichard Lowe	ENTRY(_putsw)
48*5d9d9091SRichard Lowe	movl	4(%esp),%ecx
49*5d9d9091SRichard Lowe	andl	$0x3f,%ecx
50*5d9d9091SRichard Lowe	jnz	1f
51*5d9d9091SRichard Lowe	fnclex
52*5d9d9091SRichard Lowe	ret
53*5d9d9091SRichard Lowe1:
54*5d9d9091SRichard Lowe	fnstsw	%ax
55*5d9d9091SRichard Lowe	subl	$28,%esp
56*5d9d9091SRichard Lowe	fnstenv	(%esp)
57*5d9d9091SRichard Lowe	andw	$0xffc0,%ax
58*5d9d9091SRichard Lowe	orw	%ax,%cx
59*5d9d9091SRichard Lowe	movw	%cx,4(%esp)
60*5d9d9091SRichard Lowe	fldenv	(%esp)
61*5d9d9091SRichard Lowe	addl	$28,%esp
62*5d9d9091SRichard Lowe	ret
63*5d9d9091SRichard Lowe	SET_SIZE(_putsw)
64*5d9d9091SRichard Lowe
65*5d9d9091SRichard Lowe	ENTRY(_getmxcsr)
66*5d9d9091SRichard Lowe	movl	4(%esp),%eax
67*5d9d9091SRichard Lowe	stmxcsr	(%eax)
68*5d9d9091SRichard Lowe	ret
69*5d9d9091SRichard Lowe	SET_SIZE(_getmxcsr)
70*5d9d9091SRichard Lowe
71*5d9d9091SRichard Lowe	ENTRY(_putmxcsr)
72*5d9d9091SRichard Lowe	ldmxcsr	4(%esp)
73*5d9d9091SRichard Lowe	ret
74*5d9d9091SRichard Lowe	SET_SIZE(_putmxcsr)
75