1*b6cbf720SGianluca Guida/* $NetBSD: mul.S,v 1.1 2005/12/20 19:28:50 christos Exp $ */ 2*b6cbf720SGianluca Guida 3*b6cbf720SGianluca Guida/* 4*b6cbf720SGianluca Guida * Copyright (c) 1992, 1993 5*b6cbf720SGianluca Guida * The Regents of the University of California. All rights reserved. 6*b6cbf720SGianluca Guida * 7*b6cbf720SGianluca Guida * This software was developed by the Computer Systems Engineering group 8*b6cbf720SGianluca Guida * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9*b6cbf720SGianluca Guida * contributed to Berkeley. 10*b6cbf720SGianluca Guida * 11*b6cbf720SGianluca Guida * Redistribution and use in source and binary forms, with or without 12*b6cbf720SGianluca Guida * modification, are permitted provided that the following conditions 13*b6cbf720SGianluca Guida * are met: 14*b6cbf720SGianluca Guida * 1. Redistributions of source code must retain the above copyright 15*b6cbf720SGianluca Guida * notice, this list of conditions and the following disclaimer. 16*b6cbf720SGianluca Guida * 2. Redistributions in binary form must reproduce the above copyright 17*b6cbf720SGianluca Guida * notice, this list of conditions and the following disclaimer in the 18*b6cbf720SGianluca Guida * documentation and/or other materials provided with the distribution. 19*b6cbf720SGianluca Guida * 3. Neither the name of the University nor the names of its contributors 20*b6cbf720SGianluca Guida * may be used to endorse or promote products derived from this software 21*b6cbf720SGianluca Guida * without specific prior written permission. 22*b6cbf720SGianluca Guida * 23*b6cbf720SGianluca Guida * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24*b6cbf720SGianluca Guida * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25*b6cbf720SGianluca Guida * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26*b6cbf720SGianluca Guida * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27*b6cbf720SGianluca Guida * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28*b6cbf720SGianluca Guida * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29*b6cbf720SGianluca Guida * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30*b6cbf720SGianluca Guida * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31*b6cbf720SGianluca Guida * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32*b6cbf720SGianluca Guida * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33*b6cbf720SGianluca Guida * SUCH DAMAGE. 34*b6cbf720SGianluca Guida * 35*b6cbf720SGianluca Guida * from: Header: mul.s,v 1.5 92/06/25 13:24:03 torek Exp 36*b6cbf720SGianluca Guida */ 37*b6cbf720SGianluca Guida 38*b6cbf720SGianluca Guida#include <machine/asm.h> 39*b6cbf720SGianluca Guida#if defined(LIBC_SCCS) && !defined(lint) 40*b6cbf720SGianluca Guida#if 0 41*b6cbf720SGianluca Guida .asciz "@(#)mul.s 8.1 (Berkeley) 6/4/93" 42*b6cbf720SGianluca Guida#else 43*b6cbf720SGianluca Guida RCSID("$NetBSD: mul.S,v 1.1 2005/12/20 19:28:50 christos Exp $") 44*b6cbf720SGianluca Guida#endif 45*b6cbf720SGianluca Guida#endif /* LIBC_SCCS and not lint */ 46*b6cbf720SGianluca Guida 47*b6cbf720SGianluca Guida/* 48*b6cbf720SGianluca Guida * Signed multiply. 49*b6cbf720SGianluca Guida * 50*b6cbf720SGianluca Guida * Returns %o0 * %o1 in %o0 51*b6cbf720SGianluca Guida * 52*b6cbf720SGianluca Guida * According to the manual the smaller parameter should be in 53*b6cbf720SGianluca Guida * rs1, so we'll move it there. 54*b6cbf720SGianluca Guida */ 55*b6cbf720SGianluca Guida 56*b6cbf720SGianluca GuidaFUNC(.mul) 57*b6cbf720SGianluca Guida cmp %o0, %o1 58*b6cbf720SGianluca Guida bge 1f 59*b6cbf720SGianluca Guida nop 60*b6cbf720SGianluca Guida retl 61*b6cbf720SGianluca Guida mulx %o0, %o1, %o0 62*b6cbf720SGianluca Guida1: 63*b6cbf720SGianluca Guida retl 64*b6cbf720SGianluca Guida mulx %o1, %o0, %o0 65