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fc1d4c9c KK |
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 */ |