Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef __ASM_SH_BITOPS_H
2#define __ASM_SH_BITOPS_H
3
4#ifdef __KERNEL__
5
6#ifndef _LINUX_BITOPS_H
7#error only <linux/bitops.h> can be included directly
8#endif
9
10#include <asm/system.h>
11/* For __swab32 */
12#include <asm/byteorder.h>
13
14#ifdef CONFIG_GUSA_RB
15#include <asm/bitops-grb.h>
16#else
17#include <asm/bitops-irq.h>
18#endif
19
20
21/*
22 * clear_bit() doesn't provide any barrier for the compiler.
23 */
24#define smp_mb__before_clear_bit() barrier()
25#define smp_mb__after_clear_bit() barrier()
26
27#include <asm-generic/bitops/non-atomic.h>
28
29#ifdef CONFIG_SUPERH32
30static inline unsigned long ffz(unsigned long word)
31{
32 unsigned long result;
33
34 __asm__("1:\n\t"
35 "shlr %1\n\t"
36 "bt/s 1b\n\t"
37 " add #1, %0"
38 : "=r" (result), "=r" (word)
39 : "0" (~0L), "1" (word)
40 : "t");
41 return result;
42}
43
44/**
45 * __ffs - find first bit in word.
46 * @word: The word to search
47 *
48 * Undefined if no bit exists, so code should check against 0 first.
49 */
50static inline unsigned long __ffs(unsigned long word)
51{
52 unsigned long result;
53
54 __asm__("1:\n\t"
55 "shlr %1\n\t"
56 "bf/s 1b\n\t"
57 " add #1, %0"
58 : "=r" (result), "=r" (word)
59 : "0" (~0L), "1" (word)
60 : "t");
61 return result;
62}
63#else
64static inline unsigned long ffz(unsigned long word)
65{
66 unsigned long result, __d2, __d3;
67
68 __asm__("gettr tr0, %2\n\t"
69 "pta $+32, tr0\n\t"
70 "andi %1, 1, %3\n\t"
71 "beq %3, r63, tr0\n\t"
72 "pta $+4, tr0\n"
73 "0:\n\t"
74 "shlri.l %1, 1, %1\n\t"
75 "addi %0, 1, %0\n\t"
76 "andi %1, 1, %3\n\t"
77 "beqi %3, 1, tr0\n"
78 "1:\n\t"
79 "ptabs %2, tr0\n\t"
80 : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3)
81 : "0" (0L), "1" (word));
82
83 return result;
84}
85
86#include <asm-generic/bitops/__ffs.h>
87#endif
88
89#include <asm-generic/bitops/find.h>
90#include <asm-generic/bitops/ffs.h>
91#include <asm-generic/bitops/hweight.h>
92#include <asm-generic/bitops/lock.h>
93#include <asm-generic/bitops/sched.h>
94#include <asm-generic/bitops/ext2-non-atomic.h>
95#include <asm-generic/bitops/ext2-atomic.h>
96#include <asm-generic/bitops/minix.h>
97#include <asm-generic/bitops/fls.h>
98#include <asm-generic/bitops/__fls.h>
99#include <asm-generic/bitops/fls64.h>
100
101#endif /* __KERNEL__ */
102
103#endif /* __ASM_SH_BITOPS_H */