Rev 1113 | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 1113 | Rev 1656 | ||
---|---|---|---|
1 | /* |
1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
- | 29 | /** @addtogroup libcia32 |
|
- | 30 | * @{ |
|
- | 31 | */ |
|
- | 32 | /** @file |
|
- | 33 | */ |
|
- | 34 | ||
29 | #ifndef __ia32_ATOMIC_H__ |
35 | #ifndef __ia32_ATOMIC_H__ |
30 | #define __ia32_ATOMIC_H__ |
36 | #define __ia32_ATOMIC_H__ |
31 | 37 | ||
32 | static inline void atomic_inc(atomic_t *val) { |
38 | static inline void atomic_inc(atomic_t *val) { |
33 | __asm__ volatile ("lock incl %0\n" : "=m" (val->count)); |
39 | __asm__ volatile ("lock incl %0\n" : "=m" (val->count)); |
34 | } |
40 | } |
35 | 41 | ||
36 | static inline void atomic_dec(atomic_t *val) { |
42 | static inline void atomic_dec(atomic_t *val) { |
37 | __asm__ volatile ("lock decl %0\n" : "=m" (val->count)); |
43 | __asm__ volatile ("lock decl %0\n" : "=m" (val->count)); |
38 | } |
44 | } |
39 | 45 | ||
40 | static inline long atomic_postinc(atomic_t *val) |
46 | static inline long atomic_postinc(atomic_t *val) |
41 | { |
47 | { |
42 | long r; |
48 | long r; |
43 | 49 | ||
44 | __asm__ volatile ( |
50 | __asm__ volatile ( |
45 | "movl $1, %0\n" |
51 | "movl $1, %0\n" |
46 | "lock xaddl %0, %1\n" |
52 | "lock xaddl %0, %1\n" |
47 | : "=r" (r), "=m" (val->count) |
53 | : "=r" (r), "=m" (val->count) |
48 | ); |
54 | ); |
49 | 55 | ||
50 | return r; |
56 | return r; |
51 | } |
57 | } |
52 | 58 | ||
53 | static inline long atomic_postdec(atomic_t *val) |
59 | static inline long atomic_postdec(atomic_t *val) |
54 | { |
60 | { |
55 | long r; |
61 | long r; |
56 | 62 | ||
57 | __asm__ volatile ( |
63 | __asm__ volatile ( |
58 | "movl $-1, %0\n" |
64 | "movl $-1, %0\n" |
59 | "lock xaddl %0, %1\n" |
65 | "lock xaddl %0, %1\n" |
60 | : "=r" (r), "=m" (val->count) |
66 | : "=r" (r), "=m" (val->count) |
61 | ); |
67 | ); |
62 | 68 | ||
63 | return r; |
69 | return r; |
64 | } |
70 | } |
65 | 71 | ||
66 | #define atomic_preinc(val) (atomic_postinc(val)+1) |
72 | #define atomic_preinc(val) (atomic_postinc(val)+1) |
67 | #define atomic_predec(val) (atomic_postdec(val)-1) |
73 | #define atomic_predec(val) (atomic_postdec(val)-1) |
68 | 74 | ||
69 | #endif |
75 | #endif |
- | 76 | ||
- | 77 | ||
- | 78 | /** @} |
|
- | 79 | */ |
|
- | 80 | ||
- | 81 | ||
70 | 82 |