1 /*-
2 * Copyright (c) 2002 Thomas Moestl <tmm@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/12/usr.bin/mkimg/endian.h 343765 2019-02-05 08:05:42Z delphij $
27 */
28
29 #ifndef _MKIMG_ENDIAN_H_
30 #define _MKIMG_ENDIAN_H_
31
32 #include <stdint.h>
33
34 static __inline uint16_t
be16dec(const void * pp)35 be16dec(const void *pp)
36 {
37 uint8_t const *p = (uint8_t const *)pp;
38
39 return ((p[0] << 8) | p[1]);
40 }
41
42 static __inline void
be16enc(void * pp,uint16_t u)43 be16enc(void *pp, uint16_t u)
44 {
45 uint8_t *p = (uint8_t *)pp;
46
47 p[0] = (u >> 8) & 0xff;
48 p[1] = u & 0xff;
49 }
50
51 static __inline void
be32enc(void * pp,uint32_t u)52 be32enc(void *pp, uint32_t u)
53 {
54 uint8_t *p = (uint8_t *)pp;
55
56 p[0] = (u >> 24) & 0xff;
57 p[1] = (u >> 16) & 0xff;
58 p[2] = (u >> 8) & 0xff;
59 p[3] = u & 0xff;
60 }
61
62 static __inline void
be64enc(void * pp,uint64_t u)63 be64enc(void *pp, uint64_t u)
64 {
65 uint8_t *p = (uint8_t *)pp;
66
67 be32enc(p, (uint32_t)(u >> 32));
68 be32enc(p + 4, (uint32_t)(u & 0xffffffffU));
69 }
70
71 static __inline uint16_t
le16dec(const void * pp)72 le16dec(const void *pp)
73 {
74 uint8_t const *p = (uint8_t const *)pp;
75
76 return ((p[1] << 8) | p[0]);
77 }
78
79 static __inline void
le16enc(void * pp,uint16_t u)80 le16enc(void *pp, uint16_t u)
81 {
82 uint8_t *p = (uint8_t *)pp;
83
84 p[0] = u & 0xff;
85 p[1] = (u >> 8) & 0xff;
86 }
87
88 static __inline void
le32enc(void * pp,uint32_t u)89 le32enc(void *pp, uint32_t u)
90 {
91 uint8_t *p = (uint8_t *)pp;
92
93 p[0] = u & 0xff;
94 p[1] = (u >> 8) & 0xff;
95 p[2] = (u >> 16) & 0xff;
96 p[3] = (u >> 24) & 0xff;
97 }
98
99 static __inline void
le64enc(void * pp,uint64_t u)100 le64enc(void *pp, uint64_t u)
101 {
102 uint8_t *p = (uint8_t *)pp;
103
104 le32enc(p, (uint32_t)(u & 0xffffffffU));
105 le32enc(p + 4, (uint32_t)(u >> 32));
106 }
107
108 #endif /* _MKIMG_ENDIAN_H_ */
109