1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #ifndef __ASM_CSKY_BITOPS_H
4 #define __ASM_CSKY_BITOPS_H
5
6 #include <linux/compiler.h>
7 #include <asm/barrier.h>
8
9 /*
10 * asm-generic/bitops/ffs.h
11 */
12 static inline int ffs(int x)
13 {
14 if (!x)
15 return 0;
16
17 asm volatile (
18 "brev %0\n"
19 "ff1 %0\n"
20 "addi %0, 1\n"
21 : "=&r"(x)
22 : ""(x));
23 return x;
24 }
25
26 /*
27 * asm-generic/bitops/__ffs.h
28 */
29 static __always_inline unsigned long __ffs(unsigned long x)
30 {
31 asm volatile (
32 "brev %0\n"
33 "ff1 %0\n"
34 : "=&r"(x)
35 : ""(x));
36 return x;
37 }
38
39 /*
40 * asm-generic/bitops/fls.h
41 */
42 static __always_inline int fls(unsigned int x)
43 {
44 asm volatile(
45 "ff1 %0\n"
46 : "=&r"(x)
47 : ""(x));
48
49 return (32 - x);
50 }
51
52 /*
53 * asm-generic/bitops/__fls.h
54 */
55 static __always_inline unsigned long __fls(unsigned long x)
56 {
57 return fls(x) - 1;
58 }
59
60 #include <asm-generic/bitops/ffz.h>
61 #include <asm-generic/bitops/fls64.h>
62
63 #ifndef _LINUX_BITOPS_H
64 #error only <linux/bitops.h> can be included directly
65 #endif
66
67 #include <asm-generic/bitops/sched.h>
68 #include <asm-generic/bitops/hweight.h>
69 #include <asm-generic/bitops/lock.h>
70 #include <asm-generic/bitops/atomic.h>
71
72 /*
73 * bug fix, why only could use atomic!!!!
74 */
75 #include <asm-generic/bitops/non-atomic.h>
76
77 #include <asm-generic/bitops/le.h>
78 #include <asm-generic/bitops/ext2-atomic.h>
79 #endif /* __ASM_CSKY_BITOPS_H */
80
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