| Kaz Kojima | fc1d4c9 | 2007-06-18 13:58:32 +0900 | [diff] [blame] | 1 | #ifndef __ASM_SH_FUTEX_IRQ_H |
| 2 | #define __ASM_SH_FUTEX_IRQ_H |
| 3 | |
| 4 | #include <asm/system.h> |
| 5 | |
| 6 | static inline int atomic_futex_op_xchg_set(int oparg, int __user *uaddr, |
| 7 | int *oldval) |
| 8 | { |
| 9 | unsigned long flags; |
| 10 | int ret; |
| 11 | |
| 12 | local_irq_save(flags); |
| 13 | |
| 14 | ret = get_user(*oldval, uaddr); |
| 15 | if (!ret) |
| 16 | ret = put_user(oparg, uaddr); |
| 17 | |
| 18 | local_irq_restore(flags); |
| 19 | |
| 20 | return ret; |
| 21 | } |
| 22 | |
| 23 | static inline int atomic_futex_op_xchg_add(int oparg, int __user *uaddr, |
| 24 | int *oldval) |
| 25 | { |
| 26 | unsigned long flags; |
| 27 | int ret; |
| 28 | |
| 29 | local_irq_save(flags); |
| 30 | |
| 31 | ret = get_user(*oldval, uaddr); |
| 32 | if (!ret) |
| 33 | ret = put_user(*oldval + oparg, uaddr); |
| 34 | |
| 35 | local_irq_restore(flags); |
| 36 | |
| 37 | return ret; |
| 38 | } |
| 39 | |
| 40 | static inline int atomic_futex_op_xchg_or(int oparg, int __user *uaddr, |
| 41 | int *oldval) |
| 42 | { |
| 43 | unsigned long flags; |
| 44 | int ret; |
| 45 | |
| 46 | local_irq_save(flags); |
| 47 | |
| 48 | ret = get_user(*oldval, uaddr); |
| 49 | if (!ret) |
| 50 | ret = put_user(*oldval | oparg, uaddr); |
| 51 | |
| 52 | local_irq_restore(flags); |
| 53 | |
| 54 | return ret; |
| 55 | } |
| 56 | |
| 57 | static inline int atomic_futex_op_xchg_and(int oparg, int __user *uaddr, |
| 58 | int *oldval) |
| 59 | { |
| 60 | unsigned long flags; |
| 61 | int ret; |
| 62 | |
| 63 | local_irq_save(flags); |
| 64 | |
| 65 | ret = get_user(*oldval, uaddr); |
| 66 | if (!ret) |
| 67 | ret = put_user(*oldval & oparg, uaddr); |
| 68 | |
| 69 | local_irq_restore(flags); |
| 70 | |
| 71 | return ret; |
| 72 | } |
| 73 | |
| 74 | static inline int atomic_futex_op_xchg_xor(int oparg, int __user *uaddr, |
| 75 | int *oldval) |
| 76 | { |
| 77 | unsigned long flags; |
| 78 | int ret; |
| 79 | |
| 80 | local_irq_save(flags); |
| 81 | |
| 82 | ret = get_user(*oldval, uaddr); |
| 83 | if (!ret) |
| 84 | ret = put_user(*oldval ^ oparg, uaddr); |
| 85 | |
| 86 | local_irq_restore(flags); |
| 87 | |
| 88 | return ret; |
| 89 | } |
| 90 | |
| 91 | static inline int atomic_futex_op_cmpxchg_inatomic(int __user *uaddr, |
| 92 | int oldval, int newval) |
| 93 | { |
| 94 | unsigned long flags; |
| 95 | int ret, prev = 0; |
| 96 | |
| 97 | local_irq_save(flags); |
| 98 | |
| 99 | ret = get_user(prev, uaddr); |
| 100 | if (!ret && oldval == prev) |
| 101 | ret = put_user(newval, uaddr); |
| 102 | |
| 103 | local_irq_restore(flags); |
| 104 | |
| 105 | if (ret) |
| 106 | return ret; |
| 107 | |
| 108 | return prev; |
| 109 | } |
| 110 | |
| 111 | #endif /* __ASM_SH_FUTEX_IRQ_H */ |