1/*	$NetBSD: clz.S,v 1.1 2014/09/03 19:34:25 matt Exp $ */
2
3/*-
4 * Copyright (C) 2001	Martin J. Laubach <mjl@NetBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29/*----------------------------------------------------------------------*/
30
31#include <machine/asm.h>
32
33__RCSID("$NetBSD: clz.S,v 1.1 2014/09/03 19:34:25 matt Exp $")
34
35ENTRY_NP(__clzsi2)
36#ifdef _LP64
37	l.slli	r3, r3, 32
38	l.addi	r5, r0, 64
39#else
40	l.addi	r5, r0, 32
41#endif
42	l.fl1	r11, r3
43	l.sub	r11, r5, r11
44	l.jr	lr
45	l.nop
46END(__clzsi2)
47
48ENTRY_NP(__clzdi2)
49#ifdef _LP64
50	l.addi	r5, r0, 64
51#else
52	l.sfeqi	r3, 0
53	l.bf	1f
54	l.nop
55	l.addi	r5, r0, 32
56#endif
57	l.fl1	r11, r3
58	l.sub	r11, r5, r11
59	l.jr	lr
60	l.nop
61#ifndef _LP64
621:	l.addi	r5, r0, 64
63	l.fl1	r11, r4
64	l.sub	r11, r5, r11
65	l.jr	lr
66	l.nop
67#endif
68END(__clzdi2)
69