xref: /titanic_44/usr/src/lib/libc/i386/fp/fp.h (revision 9dd0f810214fdc8e1af881a9a5c4b6927629ff9e)
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 /*	Copyright (c) 1990, 1991 UNIX System Laboratories, Inc.	*/
23 /*	Copyright (c) 1988 AT&T	*/
24 /*	  All Rights Reserved  	*/
25 
26 /*
27  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
28  * Use is subject to license terms.
29  */
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI"
32 
33 /* Useful asm routines and data types for grungy 87 hacking */
34 
35 #define EXCPMASK (FP_X_INV|FP_X_DNML|FP_X_DZ|FP_X_OFL|FP_X_UFL|FP_X_IMP)
36 
37 typedef short _envbuf87[7]; /* buffer for f{ld,st}env instruction       */
38 #define _swoff   1          /* status word index in _envbuf87           */
39 #define _swboff  2          /* status word BYTE offset in _envbuf87     */
40 
41 extern void _getcw();
42 extern void _putcw();
43