1 #ifndef __ASM_SH_ATOMIC_IRQ_H
2 #define __ASM_SH_ATOMIC_IRQ_H
3
4 #include <linux/irqflags.h>
5
6 /*
7 * To get proper branch prediction for the main line, we must branch
8 * forward to code at the end of this object's .text section, then
9 * branch back to restart the operation.
10 */
atomic_add(int i,atomic_t * v)11 static inline void atomic_add(int i, atomic_t *v)
12 {
13 unsigned long flags;
14
15 raw_local_irq_save(flags);
16 v->counter += i;
17 raw_local_irq_restore(flags);
18 }
19
atomic_sub(int i,atomic_t * v)20 static inline void atomic_sub(int i, atomic_t *v)
21 {
22 unsigned long flags;
23
24 raw_local_irq_save(flags);
25 v->counter -= i;
26 raw_local_irq_restore(flags);
27 }
28
atomic_add_return(int i,atomic_t * v)29 static inline int atomic_add_return(int i, atomic_t *v)
30 {
31 unsigned long temp, flags;
32
33 raw_local_irq_save(flags);
34 temp = v->counter;
35 temp += i;
36 v->counter = temp;
37 raw_local_irq_restore(flags);
38
39 return temp;
40 }
41
atomic_sub_return(int i,atomic_t * v)42 static inline int atomic_sub_return(int i, atomic_t *v)
43 {
44 unsigned long temp, flags;
45
46 raw_local_irq_save(flags);
47 temp = v->counter;
48 temp -= i;
49 v->counter = temp;
50 raw_local_irq_restore(flags);
51
52 return temp;
53 }
54
atomic_clear_mask(unsigned int mask,atomic_t * v)55 static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
56 {
57 unsigned long flags;
58
59 raw_local_irq_save(flags);
60 v->counter &= ~mask;
61 raw_local_irq_restore(flags);
62 }
63
atomic_set_mask(unsigned int mask,atomic_t * v)64 static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
65 {
66 unsigned long flags;
67
68 raw_local_irq_save(flags);
69 v->counter |= mask;
70 raw_local_irq_restore(flags);
71 }
72
73 #endif /* __ASM_SH_ATOMIC_IRQ_H */
74