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 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 23 */ 24/* 25 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 26 * Use is subject to license terms. 27 */ 28 29 .file "copysignf.s" 30 31#include "libm.h" 32LIBM_ANSI_PRAGMA_WEAK(copysignf,function) 33#include "libm_synonyms.h" 34 35 ENTRY(copysignf) 36 movl 4(%esp),%eax / eax <-- x 37 movl 8(%esp),%ecx / ecx <-- y 38 andl $0x7fffffff,%eax / eax <-- abs(x) 39 andl $0x80000000,%ecx / ecx[31] <-- sign_bit(y) 40 orl %ecx,%eax / eax <-- copysign(x,y) 41 subl $4,%esp / set up loading dock for result 42 movl %eax,(%esp) / copy result to loading dock 43 flds (%esp) / load copysign(x,y) 44 fwait / in case fldl causes exception 45 addl $4,%esp / restore stack-pointer for return 46 ret 47 .align 4 48 SET_SIZE(copysignf) 49