2 * bitops.h: Bit string operations on the Sparc.
4 * Copyright 1995 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright 1996 Eddie C. Dost (ecd@skynet.be)
6 * Copyright 2001 Anton Blanchard (anton@samba.org)
9 #ifndef _SPARC_BITOPS_H
10 #define _SPARC_BITOPS_H
12 #include <linux/compiler.h>
13 #include <asm/byteorder.h>
17 #ifndef _LINUX_BITOPS_H
18 #error only <linux/bitops.h> can be included directly
21 unsigned long ___set_bit(unsigned long *addr
, unsigned long mask
);
22 unsigned long ___clear_bit(unsigned long *addr
, unsigned long mask
);
23 unsigned long ___change_bit(unsigned long *addr
, unsigned long mask
);
26 * Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0'
27 * is in the highest of the four bytes and bit '31' is the high bit
28 * within the first byte. Sparc is BIG-Endian. Unless noted otherwise
29 * all bit-ops return 0 if bit was previously clear and != 0 otherwise.
31 static inline int test_and_set_bit(unsigned long nr
, volatile unsigned long *addr
)
33 unsigned long *ADDR
, mask
;
35 ADDR
= ((unsigned long *) addr
) + (nr
>> 5);
36 mask
= 1 << (nr
& 31);
38 return ___set_bit(ADDR
, mask
) != 0;
41 static inline void set_bit(unsigned long nr
, volatile unsigned long *addr
)
43 unsigned long *ADDR
, mask
;
45 ADDR
= ((unsigned long *) addr
) + (nr
>> 5);
46 mask
= 1 << (nr
& 31);
48 (void) ___set_bit(ADDR
, mask
);
51 static inline int test_and_clear_bit(unsigned long nr
, volatile unsigned long *addr
)
53 unsigned long *ADDR
, mask
;
55 ADDR
= ((unsigned long *) addr
) + (nr
>> 5);
56 mask
= 1 << (nr
& 31);
58 return ___clear_bit(ADDR
, mask
) != 0;
61 static inline void clear_bit(unsigned long nr
, volatile unsigned long *addr
)
63 unsigned long *ADDR
, mask
;
65 ADDR
= ((unsigned long *) addr
) + (nr
>> 5);
66 mask
= 1 << (nr
& 31);
68 (void) ___clear_bit(ADDR
, mask
);
71 static inline int test_and_change_bit(unsigned long nr
, volatile unsigned long *addr
)
73 unsigned long *ADDR
, mask
;
75 ADDR
= ((unsigned long *) addr
) + (nr
>> 5);
76 mask
= 1 << (nr
& 31);
78 return ___change_bit(ADDR
, mask
) != 0;
81 static inline void change_bit(unsigned long nr
, volatile unsigned long *addr
)
83 unsigned long *ADDR
, mask
;
85 ADDR
= ((unsigned long *) addr
) + (nr
>> 5);
86 mask
= 1 << (nr
& 31);
88 (void) ___change_bit(ADDR
, mask
);
91 #include <asm-generic/bitops/non-atomic.h>
93 #include <asm-generic/bitops/ffz.h>
94 #include <asm-generic/bitops/__ffs.h>
95 #include <asm-generic/bitops/sched.h>
96 #include <asm-generic/bitops/ffs.h>
97 #include <asm-generic/bitops/fls.h>
98 #include <asm-generic/bitops/__fls.h>
99 #include <asm-generic/bitops/fls64.h>
100 #include <asm-generic/bitops/hweight.h>
101 #include <asm-generic/bitops/lock.h>
102 #include <asm-generic/bitops/find.h>
103 #include <asm-generic/bitops/le.h>
104 #include <asm-generic/bitops/ext2-atomic.h>
106 #endif /* __KERNEL__ */
108 #endif /* defined(_SPARC_BITOPS_H) */