1/* $NetBSD: s_copysign.S,v 1.7 2003/08/07 16:44:41 agc 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. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include <machine/asm.h> 37 38;_sccsid: 39;.asciz "from: @(#)support.s 5.2 (Berkeley) 5/17/90" 40 41RCSID("$NetBSD: s_copysign.S,v 1.7 2003/08/07 16:44:41 agc Exp $") 42 43| copysign(x,y) 44| returns x with the sign of y. 45ENTRY(copysign) 46#ifdef __SVR4_ABI__ 47 tstw %sp@(12) 48 jmi Lneg 49 bclr #31,%sp@(4) 50 fmoved %sp@(4),%fp0 51 rts 52Lneg: 53 bset #31,%sp@(4) 54 fmoved %sp@(4),%fp0 55 rts 56#else 57 movl %sp@(4),%d0 58 movl %sp@(8),%d1 59 tstw %sp@(12) 60 jmi Lneg 61 bclr #31,%d0 62 rts 63Lneg: 64 bset #31,%d0 65 rts 66#endif 67