usr/src/lib/libc/amd64/fp/fp.h

   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 2004 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();