1*6580fee3Smillert/* $OpenBSD: mul.S,v 1.2 2003/06/02 20:18:32 millert Exp $ */ 27e2260f1Sart/* $NetBSD: mul.S,v 1.1 1998/09/11 04:56:28 eeh Exp $ */ 37e2260f1Sart 47e2260f1Sart/* 57e2260f1Sart * Copyright (c) 1992, 1993 67e2260f1Sart * The Regents of the University of California. All rights reserved. 77e2260f1Sart * 87e2260f1Sart * This software was developed by the Computer Systems Engineering group 97e2260f1Sart * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 107e2260f1Sart * contributed to Berkeley. 117e2260f1Sart * 127e2260f1Sart * Redistribution and use in source and binary forms, with or without 137e2260f1Sart * modification, are permitted provided that the following conditions 147e2260f1Sart * are met: 157e2260f1Sart * 1. Redistributions of source code must retain the above copyright 167e2260f1Sart * notice, this list of conditions and the following disclaimer. 177e2260f1Sart * 2. Redistributions in binary form must reproduce the above copyright 187e2260f1Sart * notice, this list of conditions and the following disclaimer in the 197e2260f1Sart * documentation and/or other materials provided with the distribution. 20*6580fee3Smillert * 3. Neither the name of the University nor the names of its contributors 217e2260f1Sart * may be used to endorse or promote products derived from this software 227e2260f1Sart * without specific prior written permission. 237e2260f1Sart * 247e2260f1Sart * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 257e2260f1Sart * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 267e2260f1Sart * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 277e2260f1Sart * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 287e2260f1Sart * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 297e2260f1Sart * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 307e2260f1Sart * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 317e2260f1Sart * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 327e2260f1Sart * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 337e2260f1Sart * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 347e2260f1Sart * SUCH DAMAGE. 357e2260f1Sart */ 367e2260f1Sart 377e2260f1Sart#include <machine/asm.h> 387e2260f1Sart 397e2260f1Sart/* 407e2260f1Sart * Signed multiply. 417e2260f1Sart * 427e2260f1Sart * Returns %o0 * %o1 in %o0 437e2260f1Sart * 447e2260f1Sart * According to the manual the smaller parameter should be in 457e2260f1Sart * rs1, so we'll move it there. 467e2260f1Sart */ 477e2260f1Sart 487e2260f1SartFUNC(.mul) 497e2260f1Sart cmp %o0, %o1 507e2260f1Sart bge 1f 517e2260f1Sart nop 527e2260f1Sart retl 537e2260f1Sart mulx %o0, %o1, %o0 547e2260f1Sart1: 557e2260f1Sart retl 567e2260f1Sart mulx %o1, %o0, %o0 57