aboutsummaryrefslogtreecommitdiff
blob: 00c17f8769046c7a4b45a75e897dbbc7abf2e0d3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once

#include <endian.h>
#include <stdint.h>

/* BE */

static inline uint16_t unaligned_read_be16(const void *_u) {
        const struct __attribute__((__packed__, __may_alias__)) { uint16_t x; } *u = _u;

        return be16toh(u->x);
}

static inline uint32_t unaligned_read_be32(const void *_u) {
        const struct __attribute__((__packed__, __may_alias__)) { uint32_t x; } *u = _u;

        return be32toh(u->x);
}

static inline uint64_t unaligned_read_be64(const void *_u) {
        const struct __attribute__((__packed__, __may_alias__)) { uint64_t x; } *u = _u;

        return be64toh(u->x);
}

static inline void unaligned_write_be16(void *_u, uint16_t a) {
        struct __attribute__((__packed__, __may_alias__)) { uint16_t x; } *u = _u;

        u->x = be16toh(a);
}

static inline void unaligned_write_be32(void *_u, uint32_t a) {
        struct __attribute__((__packed__, __may_alias__)) { uint32_t x; } *u = _u;

        u->x = be32toh(a);
}

static inline void unaligned_write_be64(void *_u, uint64_t a) {
        struct __attribute__((__packed__, __may_alias__)) { uint64_t x; } *u = _u;

        u->x = be64toh(a);
}

/* LE */

static inline uint16_t unaligned_read_le16(const void *_u) {
        const struct __attribute__((__packed__, __may_alias__)) { uint16_t x; } *u = _u;

        return le16toh(u->x);
}

static inline uint32_t unaligned_read_le32(const void *_u) {
        const struct __attribute__((__packed__, __may_alias__)) { uint32_t x; } *u = _u;

        return le32toh(u->x);
}

static inline uint64_t unaligned_read_le64(const void *_u) {
        const struct __attribute__((__packed__, __may_alias__)) { uint64_t x; } *u = _u;

        return le64toh(u->x);
}

static inline void unaligned_write_le16(void *_u, uint16_t a) {
        struct __attribute__((__packed__, __may_alias__)) { uint16_t x; } *u = _u;

        u->x = le16toh(a);
}

static inline void unaligned_write_le32(void *_u, uint32_t a) {
        struct __attribute__((__packed__, __may_alias__)) { uint32_t x; } *u = _u;

        u->x = le32toh(a);
}

static inline void unaligned_write_le64(void *_u, uint64_t a) {
        struct __attribute__((__packed__, __may_alias__)) { uint64_t x; } *u = _u;

        u->x = le64toh(a);
}

#if __BYTE_ORDER == __BIG_ENDIAN
#define unaligned_read_ne16 unaligned_read_be16
#define unaligned_read_ne32 unaligned_read_be32
#define unaligned_read_ne64 unaligned_read_be64

#define unaligned_write_ne16 unaligned_write_be16
#define unaligned_write_ne32 unaligned_write_be32
#define unaligned_write_ne64 unaligned_write_be64
#else
#define unaligned_read_ne16 unaligned_read_le16
#define unaligned_read_ne32 unaligned_read_le32
#define unaligned_read_ne64 unaligned_read_le64

#define unaligned_write_ne16 unaligned_write_le16
#define unaligned_write_ne32 unaligned_write_le32
#define unaligned_write_ne64 unaligned_write_le64
#endif