1 #ifndef __ASM_SH_ATOMIC_IRQ_H
2 #define __ASM_SH_ATOMIC_IRQ_H
3
4 /*
5 * To get proper branch prediction for the main line, we must branch
6 * forward to code at the end of this object's .text section, then
7 * branch back to restart the operation.
8 */
atomic_add(int i,atomic_t * v)9 static inline void atomic_add(int i, atomic_t *v)
10 {
11 unsigned long flags;
12
13 raw_local_irq_save(flags);
14 v->counter += i;
15 raw_local_irq_restore(flags);
16 }
17
atomic_sub(int i,atomic_t * v)18 static inline void atomic_sub(int i, atomic_t *v)
19 {
20 unsigned long flags;
21
22 raw_local_irq_save(flags);
23 v->counter -= i;
24 raw_local_irq_restore(flags);
25 }
26
atomic_add_return(int i,atomic_t * v)27 static inline int atomic_add_return(int i, atomic_t *v)
28 {
29 unsigned long temp, flags;
30
31 raw_local_irq_save(flags);
32 temp = v->counter;
33 temp += i;
34 v->counter = temp;
35 raw_local_irq_restore(flags);
36
37 return temp;
38 }
39
atomic_sub_return(int i,atomic_t * v)40 static inline int atomic_sub_return(int i, atomic_t *v)
41 {
42 unsigned long temp, flags;
43
44 raw_local_irq_save(flags);
45 temp = v->counter;
46 temp -= i;
47 v->counter = temp;
48 raw_local_irq_restore(flags);
49
50 return temp;
51 }
52
atomic_clear_mask(unsigned int mask,atomic_t * v)53 static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
54 {
55 unsigned long flags;
56
57 raw_local_irq_save(flags);
58 v->counter &= ~mask;
59 raw_local_irq_restore(flags);
60 }
61
atomic_set_mask(unsigned int mask,atomic_t * v)62 static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
63 {
64 unsigned long flags;
65
66 raw_local_irq_save(flags);
67 v->counter |= mask;
68 raw_local_irq_restore(flags);
69 }
70
71 #endif /* __ASM_SH_ATOMIC_IRQ_H */
72