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
27 #ifndef _MKIMG_ENDIAN_H_
28 #define _MKIMG_ENDIAN_H_
29
30 #include <stdint.h>
31
32 static __inline uint16_t
be16dec(const void * pp)33 be16dec(const void *pp)
34 {
35 uint8_t const *p = (uint8_t const *)pp;
36
37 return ((p[0] << 8) | p[1]);
38 }
39
40 static __inline void
be16enc(void * pp,uint16_t u)41 be16enc(void *pp, uint16_t u)
42 {
43 uint8_t *p = (uint8_t *)pp;
44
45 p[0] = (u >> 8) & 0xff;
46 p[1] = u & 0xff;
47 }
48
49 static __inline void
be32enc(void * pp,uint32_t u)50 be32enc(void *pp, uint32_t u)
51 {
52 uint8_t *p = (uint8_t *)pp;
53
54 p[0] = (u >> 24) & 0xff;
55 p[1] = (u >> 16) & 0xff;
56 p[2] = (u >> 8) & 0xff;
57 p[3] = u & 0xff;
58 }
59
60 static __inline void
be64enc(void * pp,uint64_t u)61 be64enc(void *pp, uint64_t u)
62 {
63 uint8_t *p = (uint8_t *)pp;
64
65 be32enc(p, (uint32_t)(u >> 32));
66 be32enc(p + 4, (uint32_t)(u & 0xffffffffU));
67 }
68
69 static __inline uint16_t
le16dec(const void * pp)70 le16dec(const void *pp)
71 {
72 uint8_t const *p = (uint8_t const *)pp;
73
74 return ((p[1] << 8) | p[0]);
75 }
76
77 static __inline void
le16enc(void * pp,uint16_t u)78 le16enc(void *pp, uint16_t u)
79 {
80 uint8_t *p = (uint8_t *)pp;
81
82 p[0] = u & 0xff;
83 p[1] = (u >> 8) & 0xff;
84 }
85
86 static __inline void
le32enc(void * pp,uint32_t u)87 le32enc(void *pp, uint32_t u)
88 {
89 uint8_t *p = (uint8_t *)pp;
90
91 p[0] = u & 0xff;
92 p[1] = (u >> 8) & 0xff;
93 p[2] = (u >> 16) & 0xff;
94 p[3] = (u >> 24) & 0xff;
95 }
96
97 static __inline void
le64enc(void * pp,uint64_t u)98 le64enc(void *pp, uint64_t u)
99 {
100 uint8_t *p = (uint8_t *)pp;
101
102 le32enc(p, (uint32_t)(u & 0xffffffffU));
103 le32enc(p + 4, (uint32_t)(u >> 32));
104 }
105
106 #endif /* _MKIMG_ENDIAN_H_ */
107