pthread_md.S revision 1.1 1 1.1 ad /* $NetBSD: pthread_md.S,v 1.1 2009/05/16 22:20:40 ad Exp $ */
2 1.1 ad
3 1.1 ad /*
4 1.1 ad * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 1.1 ad * All rights reserved.
6 1.1 ad *
7 1.1 ad * This code is derived from software contributed to The NetBSD Foundation
8 1.1 ad * by Wayne Knowles
9 1.1 ad *
10 1.1 ad * Redistribution and use in source and binary forms, with or without
11 1.1 ad * modification, are permitted provided that the following conditions
12 1.1 ad * are met:
13 1.1 ad * 1. Redistributions of source code must retain the above copyright
14 1.1 ad * notice, this list of conditions and the following disclaimer.
15 1.1 ad * 2. Redistributions in binary form must reproduce the above copyright
16 1.1 ad * notice, this list of conditions and the following disclaimer in the
17 1.1 ad * documentation and/or other materials provided with the distribution.
18 1.1 ad *
19 1.1 ad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 1.1 ad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 1.1 ad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 1.1 ad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 1.1 ad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 1.1 ad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 1.1 ad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 1.1 ad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 1.1 ad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 1.1 ad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 1.1 ad * POSSIBILITY OF SUCH DAMAGE.
30 1.1 ad */
31 1.1 ad
32 1.1 ad #include <machine/asm.h>
33 1.1 ad
34 1.1 ad LEAF_ENTRY(pthread__ras_simple_lock_init)
35 1.1 ad ldi 1,%ret0 /* 1 == unlocked */
36 1.1 ad stw %ret0,0(%arg0)
37 1.1 ad stw %ret0,4(%arg0)
38 1.1 ad stw %ret0,8(%arg0)
39 1.1 ad stw %ret0,12(%arg0)
40 1.1 ad bv,n %r0(%rp)
41 1.1 ad EXIT(pthread__ras_simple_lock_init)
42 1.1 ad
43 1.1 ad .global pthread__lock_ras_start
44 1.1 ad .global pthread__lock_ras_end
45 1.1 ad
46 1.1 ad LEAF_ENTRY(pthread__ras_simple_lock_try)
47 1.1 ad ldo 15(%arg0),%arg0
48 1.1 ad depi 0,31,4,%arg0
49 1.1 ad
50 1.1 ad pthread__lock_ras_start:
51 1.1 ad ldw 0(%arg0),%ret0
52 1.1 ad stw %r0,0(%arg0) /* 0 == locked */
53 1.1 ad pthread__lock_ras_end:
54 1.1 ad
55 1.1 ad comiclr,= 0,%ret0,%ret0 /* if locked return 0 */
56 1.1 ad ldi 1,%ret0 /* else return 1 */
57 1.1 ad bv,n %r0(%rp)
58 1.1 ad EXIT(pthread__ras_simple_lock_try)
59 1.1 ad
60 1.1 ad
61 1.1 ad LEAF_ENTRY(pthread__ras_simple_unlock)
62 1.1 ad ldo 15(%arg0),%arg0
63 1.1 ad depi 0,31,4,%arg0
64 1.1 ad ldi 1,%ret0 /* 1 == unlocked */
65 1.1 ad bv %r0(%rp)
66 1.1 ad stw %ret0,0(%arg0)
67 1.1 ad EXIT(pthread__ras_simple_unlock)
68