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git.ipfire.org Git - thirdparty/kernel/stable.git/blob - tools/include/asm-generic/unaligned.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_GENERIC_UNALIGNED_H
3 #define __ASM_GENERIC_UNALIGNED_H
6 * This is the most generic implementation of unaligned accesses
7 * and should work almost anywhere.
9 #pragma GCC diagnostic push
10 #pragma GCC diagnostic ignored "-Wpacked"
12 #define __get_unaligned_t(type, ptr) ({ \
13 const struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr); \
17 #define __put_unaligned_t(type, val, ptr) do { \
18 struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr); \
22 #define get_unaligned(ptr) __get_unaligned_t(typeof(*(ptr)), (ptr))
23 #define put_unaligned(val, ptr) __put_unaligned_t(typeof(*(ptr)), (val), (ptr))
25 static inline u16
get_unaligned_le16(const void *p
)
27 return le16_to_cpu(__get_unaligned_t(__le16
, p
));
30 static inline u32
get_unaligned_le32(const void *p
)
32 return le32_to_cpu(__get_unaligned_t(__le32
, p
));
35 static inline u64
get_unaligned_le64(const void *p
)
37 return le64_to_cpu(__get_unaligned_t(__le64
, p
));
40 static inline void put_unaligned_le16(u16 val
, void *p
)
42 __put_unaligned_t(__le16
, cpu_to_le16(val
), p
);
45 static inline void put_unaligned_le32(u32 val
, void *p
)
47 __put_unaligned_t(__le32
, cpu_to_le32(val
), p
);
50 static inline void put_unaligned_le64(u64 val
, void *p
)
52 __put_unaligned_t(__le64
, cpu_to_le64(val
), p
);
55 static inline u16
get_unaligned_be16(const void *p
)
57 return be16_to_cpu(__get_unaligned_t(__be16
, p
));
60 static inline u32
get_unaligned_be32(const void *p
)
62 return be32_to_cpu(__get_unaligned_t(__be32
, p
));
65 static inline u64
get_unaligned_be64(const void *p
)
67 return be64_to_cpu(__get_unaligned_t(__be64
, p
));
70 static inline void put_unaligned_be16(u16 val
, void *p
)
72 __put_unaligned_t(__be16
, cpu_to_be16(val
), p
);
75 static inline void put_unaligned_be32(u32 val
, void *p
)
77 __put_unaligned_t(__be32
, cpu_to_be32(val
), p
);
80 static inline void put_unaligned_be64(u64 val
, void *p
)
82 __put_unaligned_t(__be64
, cpu_to_be64(val
), p
);
85 static inline u32
__get_unaligned_be24(const u8
*p
)
87 return p
[0] << 16 | p
[1] << 8 | p
[2];
90 static inline u32
get_unaligned_be24(const void *p
)
92 return __get_unaligned_be24(p
);
95 static inline u32
__get_unaligned_le24(const u8
*p
)
97 return p
[0] | p
[1] << 8 | p
[2] << 16;
100 static inline u32
get_unaligned_le24(const void *p
)
102 return __get_unaligned_le24(p
);
105 static inline void __put_unaligned_be24(const u32 val
, u8
*p
)
112 static inline void put_unaligned_be24(const u32 val
, void *p
)
114 __put_unaligned_be24(val
, p
);
117 static inline void __put_unaligned_le24(const u32 val
, u8
*p
)
124 static inline void put_unaligned_le24(const u32 val
, void *p
)
126 __put_unaligned_le24(val
, p
);
129 static inline void __put_unaligned_be48(const u64 val
, u8
*p
)
139 static inline void put_unaligned_be48(const u64 val
, void *p
)
141 __put_unaligned_be48(val
, p
);
144 static inline u64
__get_unaligned_be48(const u8
*p
)
146 return (u64
)p
[0] << 40 | (u64
)p
[1] << 32 | (u64
)p
[2] << 24 |
147 p
[3] << 16 | p
[4] << 8 | p
[5];
150 static inline u64
get_unaligned_be48(const void *p
)
152 return __get_unaligned_be48(p
);
154 #pragma GCC diagnostic pop
156 #endif /* __ASM_GENERIC_UNALIGNED_H */