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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | #ifndef __ASM_SH_BITOPS_H |
3 | #define __ASM_SH_BITOPS_H |
4 | |
5 | #ifndef _LINUX_BITOPS_H |
6 | #error only <linux/bitops.h> can be included directly |
7 | #endif |
8 | |
9 | /* For __swab32 */ |
10 | #include <asm/byteorder.h> |
11 | #include <asm/barrier.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 | #elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP) |
21 | #include <asm/bitops-cas.h> |
22 | #else |
23 | #include <asm-generic/bitops/atomic.h> |
24 | #include <asm-generic/bitops/non-atomic.h> |
25 | #endif |
26 | |
27 | static inline unsigned long ffz(unsigned long word) |
28 | { |
29 | unsigned long result; |
30 | |
31 | __asm__("1:\n\t" |
32 | "shlr %1\n\t" |
33 | "bt/s 1b\n\t" |
34 | " add #1, %0" |
35 | : "=r" (result), "=r" (word) |
36 | : "0" (~0L), "1" (word) |
37 | : "t"); |
38 | return result; |
39 | } |
40 | |
41 | /** |
42 | * __ffs - find first bit in word. |
43 | * @word: The word to search |
44 | * |
45 | * Undefined if no bit exists, so code should check against 0 first. |
46 | */ |
47 | static inline unsigned long __ffs(unsigned long word) |
48 | { |
49 | unsigned long result; |
50 | |
51 | __asm__("1:\n\t" |
52 | "shlr %1\n\t" |
53 | "bf/s 1b\n\t" |
54 | " add #1, %0" |
55 | : "=r" (result), "=r" (word) |
56 | : "0" (~0L), "1" (word) |
57 | : "t"); |
58 | return result; |
59 | } |
60 | |
61 | #include <asm-generic/bitops/ffs.h> |
62 | #include <asm-generic/bitops/hweight.h> |
63 | #include <asm-generic/bitops/lock.h> |
64 | #include <asm-generic/bitops/sched.h> |
65 | #include <asm-generic/bitops/ext2-atomic.h> |
66 | #include <asm-generic/bitops/fls.h> |
67 | #include <asm-generic/bitops/__fls.h> |
68 | #include <asm-generic/bitops/fls64.h> |
69 | |
70 | #include <asm-generic/bitops/le.h> |
71 | |
72 | #endif /* __ASM_SH_BITOPS_H */ |
73 |
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