This source file includes following definitions.
- set_bit
- clear_bit
- change_bit
- test_and_set_bit
- test_and_clear_bit
- test_and_change_bit
1
2 #ifndef __ASM_SH_BITOPS_LLSC_H
3 #define __ASM_SH_BITOPS_LLSC_H
4
5 static inline void set_bit(int nr, volatile void *addr)
6 {
7 int mask;
8 volatile unsigned int *a = addr;
9 unsigned long tmp;
10
11 a += nr >> 5;
12 mask = 1 << (nr & 0x1f);
13
14 __asm__ __volatile__ (
15 "1: \n\t"
16 "movli.l @%1, %0 ! set_bit \n\t"
17 "or %2, %0 \n\t"
18 "movco.l %0, @%1 \n\t"
19 "bf 1b \n\t"
20 : "=&z" (tmp)
21 : "r" (a), "r" (mask)
22 : "t", "memory"
23 );
24 }
25
26 static inline void clear_bit(int nr, volatile void *addr)
27 {
28 int mask;
29 volatile unsigned int *a = addr;
30 unsigned long tmp;
31
32 a += nr >> 5;
33 mask = 1 << (nr & 0x1f);
34
35 __asm__ __volatile__ (
36 "1: \n\t"
37 "movli.l @%1, %0 ! clear_bit \n\t"
38 "and %2, %0 \n\t"
39 "movco.l %0, @%1 \n\t"
40 "bf 1b \n\t"
41 : "=&z" (tmp)
42 : "r" (a), "r" (~mask)
43 : "t", "memory"
44 );
45 }
46
47 static inline void change_bit(int nr, volatile void *addr)
48 {
49 int mask;
50 volatile unsigned int *a = addr;
51 unsigned long tmp;
52
53 a += nr >> 5;
54 mask = 1 << (nr & 0x1f);
55
56 __asm__ __volatile__ (
57 "1: \n\t"
58 "movli.l @%1, %0 ! change_bit \n\t"
59 "xor %2, %0 \n\t"
60 "movco.l %0, @%1 \n\t"
61 "bf 1b \n\t"
62 : "=&z" (tmp)
63 : "r" (a), "r" (mask)
64 : "t", "memory"
65 );
66 }
67
68 static inline int test_and_set_bit(int nr, volatile void *addr)
69 {
70 int mask, retval;
71 volatile unsigned int *a = addr;
72 unsigned long tmp;
73
74 a += nr >> 5;
75 mask = 1 << (nr & 0x1f);
76
77 __asm__ __volatile__ (
78 "1: \n\t"
79 "movli.l @%2, %0 ! test_and_set_bit \n\t"
80 "mov %0, %1 \n\t"
81 "or %3, %0 \n\t"
82 "movco.l %0, @%2 \n\t"
83 "bf 1b \n\t"
84 "and %3, %1 \n\t"
85 : "=&z" (tmp), "=&r" (retval)
86 : "r" (a), "r" (mask)
87 : "t", "memory"
88 );
89
90 return retval != 0;
91 }
92
93 static inline int test_and_clear_bit(int nr, volatile void *addr)
94 {
95 int mask, retval;
96 volatile unsigned int *a = addr;
97 unsigned long tmp;
98
99 a += nr >> 5;
100 mask = 1 << (nr & 0x1f);
101
102 __asm__ __volatile__ (
103 "1: \n\t"
104 "movli.l @%2, %0 ! test_and_clear_bit \n\t"
105 "mov %0, %1 \n\t"
106 "and %4, %0 \n\t"
107 "movco.l %0, @%2 \n\t"
108 "bf 1b \n\t"
109 "and %3, %1 \n\t"
110 "synco \n\t"
111 : "=&z" (tmp), "=&r" (retval)
112 : "r" (a), "r" (mask), "r" (~mask)
113 : "t", "memory"
114 );
115
116 return retval != 0;
117 }
118
119 static inline int test_and_change_bit(int nr, volatile void *addr)
120 {
121 int mask, retval;
122 volatile unsigned int *a = addr;
123 unsigned long tmp;
124
125 a += nr >> 5;
126 mask = 1 << (nr & 0x1f);
127
128 __asm__ __volatile__ (
129 "1: \n\t"
130 "movli.l @%2, %0 ! test_and_change_bit \n\t"
131 "mov %0, %1 \n\t"
132 "xor %3, %0 \n\t"
133 "movco.l %0, @%2 \n\t"
134 "bf 1b \n\t"
135 "and %3, %1 \n\t"
136 "synco \n\t"
137 : "=&z" (tmp), "=&r" (retval)
138 : "r" (a), "r" (mask)
139 : "t", "memory"
140 );
141
142 return retval != 0;
143 }
144
145 #include <asm-generic/bitops/non-atomic.h>
146
147 #endif