1/* $NetBSD: s_copysign.S,v 1.6 1999/11/10 16:45:33 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40#include <machine/asm.h> 41 42;_sccsid: 43;.asciz "from: @(#)support.s 5.2 (Berkeley) 5/17/90" 44 45RCSID("$NetBSD: s_copysign.S,v 1.6 1999/11/10 16:45:33 thorpej Exp $") 46 47| copysign(x,y) 48| returns x with the sign of y. 49ENTRY(copysign) 50#ifdef __SVR4_ABI__ 51 tstw %sp@(12) 52 jmi Lneg 53 bclr #31,%sp@(4) 54 fmoved %sp@(4),%fp0 55 rts 56Lneg: 57 bset #31,%sp@(4) 58 fmoved %sp@(4),%fp0 59 rts 60#else 61 movl %sp@(4),%d0 62 movl %sp@(8),%d1 63 tstw %sp@(12) 64 jmi Lneg 65 bclr #31,%d0 66 rts 67Lneg: 68 bset #31,%d0 69 rts 70#endif 71