Rev 534 | Rev 990 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 156 | decky | 1 | /* |
| 2 | * Copyright (C) 2005 Martin Decky |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 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 |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 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 |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 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 |
||
| 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 |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 342 | jermar | 29 | #ifndef __ppc32_ATOMIC_H__ |
| 30 | #define __ppc32_ATOMIC_H__ |
||
| 156 | decky | 31 | |
| 475 | jermar | 32 | #include <arch/types.h> |
| 33 | |||
| 625 | palkovsky | 34 | typedef struct { volatile __u32 count; } atomic_t; |
| 475 | jermar | 35 | |
| 156 | decky | 36 | /* |
| 37 | * TODO: these are just placeholders for real implementations of atomic_inc and atomic_dec. |
||
| 38 | * WARNING: the following functions cause the code to be preemption-unsafe !!! |
||
| 39 | */ |
||
| 40 | |||
| 475 | jermar | 41 | static inline void atomic_inc(atomic_t *val) { |
| 625 | palkovsky | 42 | val->count++; |
| 156 | decky | 43 | } |
| 44 | |||
| 475 | jermar | 45 | static inline void atomic_dec(atomic_t *val) { |
| 625 | palkovsky | 46 | val->count--; |
| 156 | decky | 47 | } |
| 48 | |||
| 625 | palkovsky | 49 | static inline void atomic_set(atomic_t *val, __u32 i) |
| 50 | { |
||
| 51 | val->count = i; |
||
| 52 | } |
||
| 53 | |||
| 54 | static inline __u32 atomic_get(atomic_t *val) |
||
| 55 | { |
||
| 56 | return val->count; |
||
| 57 | } |
||
| 58 | |||
| 156 | decky | 59 | #endif |