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 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include "lint.h" 28 #include "base_conversion.h" 29 #include <sys/isa_defs.h> 30 31 #define CSR_DEFAULT 0x1f80 32 33 /* 34 * Returns IEEE mode/status and 35 * sets up standard environment for base conversion. 36 */ 37 void __get_ieee_flags(__ieee_flags_type * b)38__get_ieee_flags(__ieee_flags_type *b) { 39 extern void _getmxcsr(), _putmxcsr(); 40 41 _getmxcsr(&b->status); 42 43 /* round-to-nearest, all exceptions masked, gradual underflow */ 44 _putmxcsr(CSR_DEFAULT); 45 } 46 47 /* 48 * Restores previous IEEE mode/status 49 */ 50 void __set_ieee_flags(__ieee_flags_type * b)51__set_ieee_flags(__ieee_flags_type *b) { 52 extern void _putmxcsr(); 53 54 _putmxcsr(b->status); 55 } 56