1
2#ifndef _ASM_GENERIC_BITOPS_NON_ATOMIC_H_
3#define _ASM_GENERIC_BITOPS_NON_ATOMIC_H_
4
5#include <asm/types.h>
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15
16static inline void __set_bit(int nr, volatile unsigned long *addr)
17{
18 unsigned long mask = BIT_MASK(nr);
19 unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
20
21 *p |= mask;
22}
23
24static inline void __clear_bit(int nr, volatile unsigned long *addr)
25{
26 unsigned long mask = BIT_MASK(nr);
27 unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
28
29 *p &= ~mask;
30}
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40
41static inline void __change_bit(int nr, volatile unsigned long *addr)
42{
43 unsigned long mask = BIT_MASK(nr);
44 unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
45
46 *p ^= mask;
47}
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57
58static inline int __test_and_set_bit(int nr, volatile unsigned long *addr)
59{
60 unsigned long mask = BIT_MASK(nr);
61 unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
62 unsigned long old = *p;
63
64 *p = old | mask;
65 return (old & mask) != 0;
66}
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76
77static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr)
78{
79 unsigned long mask = BIT_MASK(nr);
80 unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
81 unsigned long old = *p;
82
83 *p = old & ~mask;
84 return (old & mask) != 0;
85}
86
87
88static inline int __test_and_change_bit(int nr,
89 volatile unsigned long *addr)
90{
91 unsigned long mask = BIT_MASK(nr);
92 unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
93 unsigned long old = *p;
94
95 *p = old ^ mask;
96 return (old & mask) != 0;
97}
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103
104static inline int test_bit(int nr, const volatile unsigned long *addr)
105{
106 return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
107}
108
109#endif
110