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
13 #ifdef CONFIG_GUSA_RB
14 #include <asm/bitops-grb.h>
15 #elif defined(CONFIG_CPU_SH2A)
16 #include <asm-generic/bitops/atomic.h>
17 #include <asm/bitops-op32.h>
18 #elif defined(CONFIG_CPU_SH4A)
19 #include <asm/bitops-llsc.h>
20 #else
21 #include <asm-generic/bitops/atomic.h>
22 #include <asm-generic/bitops/non-atomic.h>
23 #endif
24
25 /*
26 * clear_bit() doesn't provide any barrier for the compiler.
27 */
28 #define smp_mb__before_clear_bit() smp_mb()
29 #define smp_mb__after_clear_bit() smp_mb()
30
31 #ifdef CONFIG_SUPERH32
ffz(unsigned long word)32 static inline unsigned long ffz(unsigned long word)
33 {
34 unsigned long result;
35
36 __asm__("1:\n\t"
37 "shlr %1\n\t"
38 "bt/s 1b\n\t"
39 " add #1, %0"
40 : "=r" (result), "=r" (word)
41 : "0" (~0L), "1" (word)
42 : "t");
43 return result;
44 }
45
46 /**
47 * __ffs - find first bit in word.
48 * @word: The word to search
49 *
50 * Undefined if no bit exists, so code should check against 0 first.
51 */
__ffs(unsigned long word)52 static inline unsigned long __ffs(unsigned long word)
53 {
54 unsigned long result;
55
56 __asm__("1:\n\t"
57 "shlr %1\n\t"
58 "bf/s 1b\n\t"
59 " add #1, %0"
60 : "=r" (result), "=r" (word)
61 : "0" (~0L), "1" (word)
62 : "t");
63 return result;
64 }
65 #else
ffz(unsigned long word)66 static inline unsigned long ffz(unsigned long word)
67 {
68 unsigned long result, __d2, __d3;
69
70 __asm__("gettr tr0, %2\n\t"
71 "pta $+32, tr0\n\t"
72 "andi %1, 1, %3\n\t"
73 "beq %3, r63, tr0\n\t"
74 "pta $+4, tr0\n"
75 "0:\n\t"
76 "shlri.l %1, 1, %1\n\t"
77 "addi %0, 1, %0\n\t"
78 "andi %1, 1, %3\n\t"
79 "beqi %3, 1, tr0\n"
80 "1:\n\t"
81 "ptabs %2, tr0\n\t"
82 : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3)
83 : "0" (0L), "1" (word));
84
85 return result;
86 }
87
88 #include <asm-generic/bitops/__ffs.h>
89 #endif
90
91 #include <asm-generic/bitops/find.h>
92 #include <asm-generic/bitops/ffs.h>
93 #include <asm-generic/bitops/hweight.h>
94 #include <asm-generic/bitops/lock.h>
95 #include <asm-generic/bitops/sched.h>
96 #include <asm-generic/bitops/le.h>
97 #include <asm-generic/bitops/ext2-atomic.h>
98 #include <asm-generic/bitops/fls.h>
99 #include <asm-generic/bitops/__fls.h>
100 #include <asm-generic/bitops/fls64.h>
101
102 #endif /* __KERNEL__ */
103
104 #endif /* __ASM_SH_BITOPS_H */
105