1/*        $NetBSD: ashrdi3.S,v 1.8 2014/03/18 18:20:37 riastradh 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 J.T. Conklin.
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
32#include <machine/asm.h>
33
34| d0 msw
35| d1 lsw
36| d2 shift
37| d3 offset (32 - shift)
38
39ENTRY(__ashrdi3)
40          link      %fp,#-12
41          moveml    %d2-%d4,(%sp)
42          movel     8(%fp),%d0
43          movel     12(%fp),%d1
44          movel     16(%fp),%d2
45          moveq     #32,%d3
46          subl      %d2,%d3
47          jgt       L2
48          negl      %d3
49          movel     %d0,%d1
50          asrl      %d3,%d1
51          smi       %d0
52          extbl     %d0
53          jra       L3
54L2:       lsrl      %d2,%d1
55          movel     %d0,%d4
56          asll      %d3,%d4
57          orl       %d4,%d1
58          asrl      %d2,%d0
59L3:       moveml    -12(%fp),%d2-%d4
60          unlk      %fp
61          rts
62END(__ashrdi3)
63