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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | #pragma once | |
4 | ||
5 | /*** | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2014 Tom Gundersen | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
11 | under the terms of the GNU Lesser General Public License as published by | |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | Lesser General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU Lesser General Public License | |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
22 | ***/ | |
23 | ||
24 | #include <stdint.h> | |
25 | ||
617e7946 TG |
26 | static inline uint16_t unaligned_read_be16(const void *_u) { |
27 | const uint8_t *u = _u; | |
f089257d | 28 | |
617e7946 TG |
29 | return (((uint16_t) u[0]) << 8) | |
30 | ((uint16_t) u[1]); | |
f089257d TG |
31 | } |
32 | ||
617e7946 TG |
33 | static inline uint32_t unaligned_read_be32(const void *_u) { |
34 | const uint8_t *u = _u; | |
35 | ||
36 | return (((uint32_t) unaligned_read_be16(u)) << 16) | | |
37 | ((uint32_t) unaligned_read_be16(u + 2)); | |
f089257d TG |
38 | } |
39 | ||
617e7946 TG |
40 | static inline uint64_t unaligned_read_be64(const void *_u) { |
41 | const uint8_t *u = _u; | |
42 | ||
43 | return (((uint64_t) unaligned_read_be32(u)) << 32) | | |
44 | ((uint64_t) unaligned_read_be32(u + 4)); | |
f089257d TG |
45 | } |
46 | ||
617e7946 TG |
47 | static inline void unaligned_write_be16(void *_u, uint16_t a) { |
48 | uint8_t *u = _u; | |
49 | ||
50 | u[0] = (uint8_t) (a >> 8); | |
51 | u[1] = (uint8_t) a; | |
f089257d TG |
52 | } |
53 | ||
617e7946 TG |
54 | static inline void unaligned_write_be32(void *_u, uint32_t a) { |
55 | uint8_t *u = _u; | |
56 | ||
57 | unaligned_write_be16(u, (uint16_t) (a >> 16)); | |
58 | unaligned_write_be16(u + 2, (uint16_t) a); | |
f089257d TG |
59 | } |
60 | ||
617e7946 TG |
61 | static inline void unaligned_write_be64(void *_u, uint64_t a) { |
62 | uint8_t *u = _u; | |
63 | ||
64 | unaligned_write_be32(u, (uint32_t) (a >> 32)); | |
65 | unaligned_write_be32(u + 4, (uint32_t) a); | |
f089257d | 66 | } |