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
32static __inline uint16_t
33be16dec(const void *pp)
34{
35	uint8_t const *p = (uint8_t const *)pp;
36
37	return ((p[0] << 8) | p[1]);
38}
39
40static __inline void
41be16enc(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
49static __inline void
50be32enc(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
60static __inline void
61be64enc(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
69static __inline uint16_t
70le16dec(const void *pp)
71{
72	uint8_t const *p = (uint8_t const *)pp;
73
74	return ((p[1] << 8) | p[0]);
75}
76
77static __inline void
78le16enc(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
86static __inline void
87le32enc(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
97static __inline void
98le64enc(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