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1da177e4 LT |
1 | #ifndef __ASM_SH64_BITOPS_H |
2 | #define __ASM_SH64_BITOPS_H | |
3 | ||
4 | /* | |
5 | * This file is subject to the terms and conditions of the GNU General Public | |
6 | * License. See the file "COPYING" in the main directory of this archive | |
7 | * for more details. | |
8 | * | |
9 | * include/asm-sh64/bitops.h | |
10 | * | |
11 | * Copyright (C) 2000, 2001 Paolo Alberelli | |
12 | * Copyright (C) 2003 Paul Mundt | |
13 | */ | |
14 | ||
15 | #ifdef __KERNEL__ | |
16 | #include <linux/compiler.h> | |
17 | #include <asm/system.h> | |
18 | /* For __swab32 */ | |
19 | #include <asm/byteorder.h> | |
20 | ||
21 | static __inline__ void set_bit(int nr, volatile void * addr) | |
22 | { | |
23 | int mask; | |
24 | volatile unsigned int *a = addr; | |
25 | unsigned long flags; | |
26 | ||
27 | a += nr >> 5; | |
28 | mask = 1 << (nr & 0x1f); | |
29 | local_irq_save(flags); | |
30 | *a |= mask; | |
31 | local_irq_restore(flags); | |
32 | } | |
33 | ||
1da177e4 LT |
34 | /* |
35 | * clear_bit() doesn't provide any barrier for the compiler. | |
36 | */ | |
37 | #define smp_mb__before_clear_bit() barrier() | |
38 | #define smp_mb__after_clear_bit() barrier() | |
39 | static inline void clear_bit(int nr, volatile unsigned long *a) | |
40 | { | |
41 | int mask; | |
42 | unsigned long flags; | |
43 | ||
44 | a += nr >> 5; | |
45 | mask = 1 << (nr & 0x1f); | |
46 | local_irq_save(flags); | |
47 | *a &= ~mask; | |
48 | local_irq_restore(flags); | |
49 | } | |
50 | ||
1da177e4 LT |
51 | static __inline__ void change_bit(int nr, volatile void * addr) |
52 | { | |
53 | int mask; | |
54 | volatile unsigned int *a = addr; | |
55 | unsigned long flags; | |
56 | ||
57 | a += nr >> 5; | |
58 | mask = 1 << (nr & 0x1f); | |
59 | local_irq_save(flags); | |
60 | *a ^= mask; | |
61 | local_irq_restore(flags); | |
62 | } | |
63 | ||
1da177e4 LT |
64 | static __inline__ int test_and_set_bit(int nr, volatile void * addr) |
65 | { | |
66 | int mask, retval; | |
67 | volatile unsigned int *a = addr; | |
68 | unsigned long flags; | |
69 | ||
70 | a += nr >> 5; | |
71 | mask = 1 << (nr & 0x1f); | |
72 | local_irq_save(flags); | |
73 | retval = (mask & *a) != 0; | |
74 | *a |= mask; | |
75 | local_irq_restore(flags); | |
76 | ||
77 | return retval; | |
78 | } | |
79 | ||
1da177e4 LT |
80 | static __inline__ int test_and_clear_bit(int nr, volatile void * addr) |
81 | { | |
82 | int mask, retval; | |
83 | volatile unsigned int *a = addr; | |
84 | unsigned long flags; | |
85 | ||
86 | a += nr >> 5; | |
87 | mask = 1 << (nr & 0x1f); | |
88 | local_irq_save(flags); | |
89 | retval = (mask & *a) != 0; | |
90 | *a &= ~mask; | |
91 | local_irq_restore(flags); | |
92 | ||
93 | return retval; | |
94 | } | |
95 | ||
1da177e4 LT |
96 | static __inline__ int test_and_change_bit(int nr, volatile void * addr) |
97 | { | |
98 | int mask, retval; | |
99 | volatile unsigned int *a = addr; | |
100 | unsigned long flags; | |
101 | ||
102 | a += nr >> 5; | |
103 | mask = 1 << (nr & 0x1f); | |
104 | local_irq_save(flags); | |
105 | retval = (mask & *a) != 0; | |
106 | *a ^= mask; | |
107 | local_irq_restore(flags); | |
108 | ||
109 | return retval; | |
110 | } | |
111 | ||
62f1b246 | 112 | #include <asm-generic/bitops/non-atomic.h> |
1da177e4 LT |
113 | |
114 | static __inline__ unsigned long ffz(unsigned long word) | |
115 | { | |
116 | unsigned long result, __d2, __d3; | |
117 | ||
118 | __asm__("gettr tr0, %2\n\t" | |
119 | "pta $+32, tr0\n\t" | |
120 | "andi %1, 1, %3\n\t" | |
121 | "beq %3, r63, tr0\n\t" | |
122 | "pta $+4, tr0\n" | |
123 | "0:\n\t" | |
124 | "shlri.l %1, 1, %1\n\t" | |
125 | "addi %0, 1, %0\n\t" | |
126 | "andi %1, 1, %3\n\t" | |
127 | "beqi %3, 1, tr0\n" | |
128 | "1:\n\t" | |
129 | "ptabs %2, tr0\n\t" | |
130 | : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3) | |
131 | : "0" (0L), "1" (word)); | |
132 | ||
133 | return result; | |
134 | } | |
135 | ||
62f1b246 AM |
136 | #include <asm-generic/bitops/__ffs.h> |
137 | #include <asm-generic/bitops/find.h> | |
138 | #include <asm-generic/bitops/hweight.h> | |
139 | #include <asm-generic/bitops/sched.h> | |
140 | #include <asm-generic/bitops/ffs.h> | |
141 | #include <asm-generic/bitops/ext2-non-atomic.h> | |
142 | #include <asm-generic/bitops/ext2-atomic.h> | |
143 | #include <asm-generic/bitops/minix.h> | |
144 | #include <asm-generic/bitops/fls.h> | |
145 | #include <asm-generic/bitops/fls64.h> | |
1da177e4 LT |
146 | |
147 | #endif /* __KERNEL__ */ | |
148 | ||
149 | #endif /* __ASM_SH64_BITOPS_H */ |