bootblock/boot/muldi3.s

1.6  mhitch /*	$NetBSD: muldi3.s,v 1.6 2001/03/02 16:43:26 mhitch Exp $ */
1.2      is
1.2      is /*-
1.3      is  * Copyright (c) 1996 The NetBSD Foundation, Inc.
1.2      is  * All rights reserved.
1.1      is  *
1.2      is  * This code is derived from software contributed to The NetBSD Foundation
1.2      is  * by Ignatios Souvatzis.
1.1      is  *
1.1      is  * Redistribution and use in source and binary forms, with or without
1.1      is  * modification, are permitted provided that the following conditions
1.1      is  * are met:
1.1      is  * 1. Redistributions of source code must retain the above copyright
1.1      is  *    notice, this list of conditions and the following disclaimer.
1.1      is  * 2. Redistributions in binary form must reproduce the above copyright
1.1      is  *    notice, this list of conditions and the following disclaimer in the
1.1      is  *    documentation and/or other materials provided with the distribution.
1.1      is  * 3. All advertising materials mentioning features or use of this software
1.1      is  *    must display the following acknowledgement:
1.2      is  *        This product includes software developed by the NetBSD
1.2      is  *        Foundation, Inc. and its contributors.
1.2      is  * 4. Neither the name of The NetBSD Foundation nor the names of its
1.2      is  *    contributors may be used to endorse or promote products derived
1.2      is  *    from this software without specific prior written permission.
1.1      is  *
1.2      is  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
1.2      is  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
1.2      is  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.2      is  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
1.2      is  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.2      is  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.2      is  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.2      is  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.2      is  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.2      is  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.2      is  * POSSIBILITY OF SUCH DAMAGE.
1.1      is  */
1.4      is #include <machine/asm.h>
1.1      is
1.4      is ENTRY_NOPROFILE(__muldi3)
1.6  mhitch 	movml %d2/%d3/%d4/%d5/%d6,%sp@-	| 0..4 regs, 5 %pc, 6..9 parameters
1.6  mhitch 	movml %sp@(24),%d2-%d5
1.5      is |	movl %sp@(24),%d2
1.5      is |	movl %sp@(28),%d3
1.5      is |	movl %sp@(32),%d4
1.5      is |	movl %sp@(36),%d5
1.5      is 	movq #0,%d0
1.5      is 	movq #0,%d1
1.5      is 	movq #63,%d6
1.1      is L4:
1.5      is 	asrl #1,%d2
1.5      is 	roxrl #1,%d3
1.1      is 	jcc L5
1.6  mhitch 	addl %d5,%d1
1.6  mhitch 	addxl %d4,%d0
1.1      is L5:
1.6  mhitch 	addl %d5,%d5
1.6  mhitch 	addxl %d4,%d4
1.1      is L7:
1.5      is 	dbra %d6,L4
1.6  mhitch 	movml %sp@+,%d2/%d3/%d4/%d5/%d6
1.1      is 	rts