1/* $Id: bitops.h,v 1.1.1.1 2007/08/03 18:53:36 Exp $
2 * bitops.h: Bit string operations on the V9.
3 *
4 * Copyright 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
5 */
6
7#ifndef _SPARC64_BITOPS_H
8#define _SPARC64_BITOPS_H
9
10#include <linux/compiler.h>
11#include <asm/byteorder.h>
12
13extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr);
14extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr);
15extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr);
16extern void set_bit(unsigned long nr, volatile unsigned long *addr);
17extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
18extern void change_bit(unsigned long nr, volatile unsigned long *addr);
19
20#include <asm-generic/bitops/non-atomic.h>
21
22#ifdef CONFIG_SMP
23#define smp_mb__before_clear_bit()	membar_storeload_loadload()
24#define smp_mb__after_clear_bit()	membar_storeload_storestore()
25#else
26#define smp_mb__before_clear_bit()	barrier()
27#define smp_mb__after_clear_bit()	barrier()
28#endif
29
30#include <asm-generic/bitops/ffz.h>
31#include <asm-generic/bitops/__ffs.h>
32#include <asm-generic/bitops/fls.h>
33#include <asm-generic/bitops/fls64.h>
34
35#ifdef __KERNEL__
36
37#include <asm-generic/bitops/sched.h>
38#include <asm-generic/bitops/ffs.h>
39
40/*
41 * hweightN: returns the hamming weight (i.e. the number
42 * of bits set) of a N-bit word
43 */
44
45#ifdef ULTRA_HAS_POPULATION_COUNT
46
47static inline unsigned int hweight64(unsigned long w)
48{
49	unsigned int res;
50
51	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
52	return res;
53}
54
55static inline unsigned int hweight32(unsigned int w)
56{
57	unsigned int res;
58
59	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff));
60	return res;
61}
62
63static inline unsigned int hweight16(unsigned int w)
64{
65	unsigned int res;
66
67	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff));
68	return res;
69}
70
71static inline unsigned int hweight8(unsigned int w)
72{
73	unsigned int res;
74
75	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff));
76	return res;
77}
78
79#else
80
81#include <asm-generic/bitops/hweight.h>
82
83#endif
84#endif /* __KERNEL__ */
85
86#include <asm-generic/bitops/find.h>
87
88#ifdef __KERNEL__
89
90#include <asm-generic/bitops/ext2-non-atomic.h>
91
92#define ext2_set_bit_atomic(lock,nr,addr) \
93	test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
94#define ext2_clear_bit_atomic(lock,nr,addr) \
95	test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
96
97#include <asm-generic/bitops/minix.h>
98
99#endif /* __KERNEL__ */
100
101#endif /* defined(_SPARC64_BITOPS_H) */
102