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Linux kernel mirror (for testing)
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linux
1#ifndef __ASM_SH_BITOPS_IRQ_H
2#define __ASM_SH_BITOPS_IRQ_H
3
4static inline void set_bit(int nr, volatile void *addr)
5{
6 int mask;
7 volatile unsigned int *a = addr;
8 unsigned long flags;
9
10 a += nr >> 5;
11 mask = 1 << (nr & 0x1f);
12 local_irq_save(flags);
13 *a |= mask;
14 local_irq_restore(flags);
15}
16
17static inline void clear_bit(int nr, volatile void *addr)
18{
19 int mask;
20 volatile unsigned int *a = addr;
21 unsigned long flags;
22
23 a += nr >> 5;
24 mask = 1 << (nr & 0x1f);
25 local_irq_save(flags);
26 *a &= ~mask;
27 local_irq_restore(flags);
28}
29
30static inline void change_bit(int nr, volatile void *addr)
31{
32 int mask;
33 volatile unsigned int *a = addr;
34 unsigned long flags;
35
36 a += nr >> 5;
37 mask = 1 << (nr & 0x1f);
38 local_irq_save(flags);
39 *a ^= mask;
40 local_irq_restore(flags);
41}
42
43static inline int test_and_set_bit(int nr, volatile void *addr)
44{
45 int mask, retval;
46 volatile unsigned int *a = addr;
47 unsigned long flags;
48
49 a += nr >> 5;
50 mask = 1 << (nr & 0x1f);
51 local_irq_save(flags);
52 retval = (mask & *a) != 0;
53 *a |= mask;
54 local_irq_restore(flags);
55
56 return retval;
57}
58
59static inline int test_and_clear_bit(int nr, volatile void *addr)
60{
61 int mask, retval;
62 volatile unsigned int *a = addr;
63 unsigned long flags;
64
65 a += nr >> 5;
66 mask = 1 << (nr & 0x1f);
67 local_irq_save(flags);
68 retval = (mask & *a) != 0;
69 *a &= ~mask;
70 local_irq_restore(flags);
71
72 return retval;
73}
74
75static inline int test_and_change_bit(int nr, volatile void *addr)
76{
77 int mask, retval;
78 volatile unsigned int *a = addr;
79 unsigned long flags;
80
81 a += nr >> 5;
82 mask = 1 << (nr & 0x1f);
83 local_irq_save(flags);
84 retval = (mask & *a) != 0;
85 *a ^= mask;
86 local_irq_restore(flags);
87
88 return retval;
89}
90
91#endif /* __ASM_SH_BITOPS_IRQ_H */