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      1 /*	$NetBSD: muldi3.s,v 1.7 2008/04/28 20:23:13 martin Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Ignatios Souvatzis.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 #include <machine/asm.h>
     32 
     33 ENTRY_NOPROFILE(__muldi3)
     34 	movml %d2/%d3/%d4/%d5/%d6,%sp@-	| 0..4 regs, 5 %pc, 6..9 parameters
     35 	movml %sp@(24),%d2-%d5
     36 |	movl %sp@(24),%d2
     37 |	movl %sp@(28),%d3
     38 |	movl %sp@(32),%d4
     39 |	movl %sp@(36),%d5
     40 	movq #0,%d0
     41 	movq #0,%d1
     42 	movq #63,%d6
     43 L4:
     44 	asrl #1,%d2
     45 	roxrl #1,%d3
     46 	jcc L5
     47 	addl %d5,%d1
     48 	addxl %d4,%d0
     49 L5:
     50 	addl %d5,%d5
     51 	addxl %d4,%d4
     52 L7:
     53 	dbra %d6,L4
     54 	movml %sp@+,%d2/%d3/%d4/%d5/%d6
     55 	rts
     56