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/* For __swab32 */
11#include <asm/byteorder.h>
12#include <asm/barrier.h>
13
14#ifdef CONFIG_GUSA_RB
15#include <asm/bitops-grb.h>
16#elif defined(CONFIG_CPU_SH2A)
17#include <asm-generic/bitops/atomic.h>
18#include <asm/bitops-op32.h>
19#elif defined(CONFIG_CPU_SH4A)
20#include <asm/bitops-llsc.h>
21#elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP)
22#include <asm/bitops-cas.h>
23#else
24#include <asm-generic/bitops/atomic.h>
25#include <asm-generic/bitops/non-atomic.h>
26#endif
27
28#ifdef CONFIG_SUPERH32
29static inline unsigned long ffz(unsigned long word)
30{
31 unsigned long result;
32
33 __asm__("1:\n\t"
34 "shlr %1\n\t"
35 "bt/s 1b\n\t"
36 " add #1, %0"
37 : "=r" (result), "=r" (word)
38 : "0" (~0L), "1" (word)
39 : "t");
40 return result;
41}
42
43/**
44 * __ffs - find first bit in word.
45 * @word: The word to search
46 *
47 * Undefined if no bit exists, so code should check against 0 first.
48 */
49static inline unsigned long __ffs(unsigned long word)
50{
51 unsigned long result;
52
53 __asm__("1:\n\t"
54 "shlr %1\n\t"
55 "bf/s 1b\n\t"
56 " add #1, %0"
57 : "=r" (result), "=r" (word)
58 : "0" (~0L), "1" (word)
59 : "t");
60 return result;
61}
62#else
63static inline unsigned long ffz(unsigned long word)
64{
65 unsigned long result, __d2, __d3;
66
67 __asm__("gettr tr0, %2\n\t"
68 "pta $+32, tr0\n\t"
69 "andi %1, 1, %3\n\t"
70 "beq %3, r63, tr0\n\t"
71 "pta $+4, tr0\n"
72 "0:\n\t"
73 "shlri.l %1, 1, %1\n\t"
74 "addi %0, 1, %0\n\t"
75 "andi %1, 1, %3\n\t"
76 "beqi %3, 1, tr0\n"
77 "1:\n\t"
78 "ptabs %2, tr0\n\t"
79 : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3)
80 : "0" (0L), "1" (word));
81
82 return result;
83}
84
85#include <asm-generic/bitops/__ffs.h>
86#endif
87
88#include <asm-generic/bitops/find.h>
89#include <asm-generic/bitops/ffs.h>
90#include <asm-generic/bitops/hweight.h>
91#include <asm-generic/bitops/lock.h>
92#include <asm-generic/bitops/sched.h>
93#include <asm-generic/bitops/le.h>
94#include <asm-generic/bitops/ext2-atomic.h>
95#include <asm-generic/bitops/fls.h>
96#include <asm-generic/bitops/__fls.h>
97#include <asm-generic/bitops/fls64.h>
98
99#endif /* __KERNEL__ */
100
101#endif /* __ASM_SH_BITOPS_H */