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 #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 #else
22 #include <asm-generic/bitops/atomic.h>
23 #include <asm-generic/bitops/non-atomic.h>
24 #endif
25
26 /*
27 * clear_bit() doesn't provide any barrier for the compiler.
28 */
29 #define smp_mb__before_clear_bit() barrier()
30 #define smp_mb__after_clear_bit() barrier()
31
32 #ifdef CONFIG_SUPERH32
ffz(unsigned long word)33 static inline unsigned long ffz(unsigned long word)
34 {
35 unsigned long result;
36
37 __asm__("1:\n\t"
38 "shlr %1\n\t"
39 "bt/s 1b\n\t"
40 " add #1, %0"
41 : "=r" (result), "=r" (word)
42 : "0" (~0L), "1" (word)
43 : "t");
44 return result;
45 }
46
47 /**
48 * __ffs - find first bit in word.
49 * @word: The word to search
50 *
51 * Undefined if no bit exists, so code should check against 0 first.
52 */
__ffs(unsigned long word)53 static inline unsigned long __ffs(unsigned long word)
54 {
55 unsigned long result;
56
57 __asm__("1:\n\t"
58 "shlr %1\n\t"
59 "bf/s 1b\n\t"
60 " add #1, %0"
61 : "=r" (result), "=r" (word)
62 : "0" (~0L), "1" (word)
63 : "t");
64 return result;
65 }
66 #else
ffz(unsigned long word)67 static inline unsigned long ffz(unsigned long word)
68 {
69 unsigned long result, __d2, __d3;
70
71 __asm__("gettr tr0, %2\n\t"
72 "pta $+32, tr0\n\t"
73 "andi %1, 1, %3\n\t"
74 "beq %3, r63, tr0\n\t"
75 "pta $+4, tr0\n"
76 "0:\n\t"
77 "shlri.l %1, 1, %1\n\t"
78 "addi %0, 1, %0\n\t"
79 "andi %1, 1, %3\n\t"
80 "beqi %3, 1, tr0\n"
81 "1:\n\t"
82 "ptabs %2, tr0\n\t"
83 : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3)
84 : "0" (0L), "1" (word));
85
86 return result;
87 }
88
89 #include <asm-generic/bitops/__ffs.h>
90 #endif
91
92 #include <asm-generic/bitops/find.h>
93 #include <asm-generic/bitops/ffs.h>
94 #include <asm-generic/bitops/hweight.h>
95 #include <asm-generic/bitops/lock.h>
96 #include <asm-generic/bitops/sched.h>
97 #include <asm-generic/bitops/ext2-non-atomic.h>
98 #include <asm-generic/bitops/ext2-atomic.h>
99 #include <asm-generic/bitops/minix.h>
100 #include <asm-generic/bitops/fls.h>
101 #include <asm-generic/bitops/__fls.h>
102 #include <asm-generic/bitops/fls64.h>
103
104 #endif /* __KERNEL__ */
105
106 #endif /* __ASM_SH_BITOPS_H */
107