1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*
* Copyright 2004-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef _BLACKFIN_BITOPS_H
#define _BLACKFIN_BITOPS_H
#include <linux/compiler.h>
#include <asm-generic/bitops/__ffs.h>
#include <asm-generic/bitops/ffz.h>
#include <asm-generic/bitops/fls.h>
#include <asm-generic/bitops/__fls.h>
#include <asm-generic/bitops/fls64.h>
#include <asm-generic/bitops/find.h>
#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/ffs.h>
#include <asm-generic/bitops/const_hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm/barrier.h>
#ifndef CONFIG_SMP
#include <linux/irqflags.h>
/*
* clear_bit may not imply a memory barrier
*/
#include <asm-generic/bitops/atomic.h>
#include <asm-generic/bitops/non-atomic.h>
#else
#include <asm/byteorder.h> /* swab32 */
#include <linux/linkage.h>
asmlinkage int __raw_bit_set_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_clear_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_toggle_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_test_set_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_test_clear_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_test_toggle_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_test_asm(const volatile unsigned long *addr, int nr);
static inline void set_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
__raw_bit_set_asm(a, nr & 0x1f);
}
static inline void clear_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
__raw_bit_clear_asm(a, nr & 0x1f);
}
static inline void change_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
__raw_bit_toggle_asm(a, nr & 0x1f);
}
static inline int test_bit(int nr, const volatile unsigned long *addr)
{
volatile const unsigned long *a = addr + (nr >> 5);
return __raw_bit_test_asm(a, nr & 0x1f) != 0;
}
static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
return __raw_bit_test_set_asm(a, nr & 0x1f);
}
static inline int test_and_clear_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
return __raw_bit_test_clear_asm(a, nr & 0x1f);
}
static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
return __raw_bit_test_toggle_asm(a, nr & 0x1f);
}
#define test_bit __skip_test_bit
#include <asm-generic/bitops/non-atomic.h>
#undef test_bit
#endif /* CONFIG_SMP */
/* Needs to be after test_bit and friends */
#include <asm-generic/bitops/le.h>
/*
* hweightN: returns the hamming weight (i.e. the number
* of bits set) of a N-bit word
*/
static inline unsigned int __arch_hweight32(unsigned int w)
{
unsigned int res;
__asm__ ("%0.l = ONES %1;"
"%0 = %0.l (Z);"
: "=d" (res) : "d" (w));
return res;
}
static inline unsigned int __arch_hweight64(__u64 w)
{
return __arch_hweight32((unsigned int)(w >> 32)) +
__arch_hweight32((unsigned int)w);
}
static inline unsigned int __arch_hweight16(unsigned int w)
{
return __arch_hweight32(w & 0xffff);
}
static inline unsigned int __arch_hweight8(unsigned int w)
{
return __arch_hweight32(w & 0xff);
}
#endif /* _BLACKFIN_BITOPS_H */
|
