1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * bitops.h: Bit string operations on the Sparc.
4 *
5 * Copyright 1995 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright 1996 Eddie C. Dost (ecd@skynet.be)
7 * Copyright 2001 Anton Blanchard (anton@samba.org)
8 */
9
10 #ifndef _SPARC_BITOPS_H
11 #define _SPARC_BITOPS_H
12
13 #include <linux/compiler.h>
14 #include <asm/byteorder.h>
15
16 #ifdef __KERNEL__
17
18 #ifndef _LINUX_BITOPS_H
19 #error only <linux/bitops.h> can be included directly
20 #endif
21
22 unsigned long sp32___set_bit(unsigned long *addr, unsigned long mask);
23 unsigned long sp32___clear_bit(unsigned long *addr, unsigned long mask);
24 unsigned long sp32___change_bit(unsigned long *addr, unsigned long mask);
25
26 /*
27 * Set bit 'nr' in 32-bit quantity at address 'addr' where bit ''
28 * is in the highest of the four bytes and bit '31' is the high bit
29 * within the first byte. Sparc is BIG-Endian. Unless noted otherwise
30 * all bit-ops return 0 if bit was previously clear and != 0 otherwise.
31 */
32 static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
33 {
34 unsigned long *ADDR, mask;
35
36 ADDR = ((unsigned long *) addr) + (nr >> 5);
37 mask = 1 << (nr & 31);
38
39 return sp32___set_bit(ADDR, mask) != 0;
40 }
41
42 static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
43 {
44 unsigned long *ADDR, mask;
45
46 ADDR = ((unsigned long *) addr) + (nr >> 5);
47 mask = 1 << (nr & 31);
48
49 (void) sp32___set_bit(ADDR, mask);
50 }
51
52 static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
53 {
54 unsigned long *ADDR, mask;
55
56 ADDR = ((unsigned long *) addr) + (nr >> 5);
57 mask = 1 << (nr & 31);
58
59 return sp32___clear_bit(ADDR, mask) != 0;
60 }
61
62 static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
63 {
64 unsigned long *ADDR, mask;
65
66 ADDR = ((unsigned long *) addr) + (nr >> 5);
67 mask = 1 << (nr & 31);
68
69 (void) sp32___clear_bit(ADDR, mask);
70 }
71
72 static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
73 {
74 unsigned long *ADDR, mask;
75
76 ADDR = ((unsigned long *) addr) + (nr >> 5);
77 mask = 1 << (nr & 31);
78
79 return sp32___change_bit(ADDR, mask) != 0;
80 }
81
82 static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
83 {
84 unsigned long *ADDR, mask;
85
86 ADDR = ((unsigned long *) addr) + (nr >> 5);
87 mask = 1 << (nr & 31);
88
89 (void) sp32___change_bit(ADDR, mask);
90 }
91
92 #include <asm-generic/bitops/non-atomic.h>
93
94 #include <asm-generic/bitops/ffz.h>
95 #include <asm-generic/bitops/__ffs.h>
96 #include <asm-generic/bitops/sched.h>
97 #include <asm-generic/bitops/ffs.h>
98 #include <asm-generic/bitops/fls.h>
99 #include <asm-generic/bitops/__fls.h>
100 #include <asm-generic/bitops/fls64.h>
101 #include <asm-generic/bitops/hweight.h>
102 #include <asm-generic/bitops/lock.h>
103 #include <asm-generic/bitops/le.h>
104 #include <asm-generic/bitops/ext2-atomic.h>
105
106 #endif /* __KERNEL__ */
107
108 #endif /* defined(_SPARC_BITOPS_H) */
109
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