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 * $FreeBSD$
27 */
28
29#ifndef _MKIMG_ENDIAN_H_
30#define _MKIMG_ENDIAN_H_
31
32#include <stdint.h>
33
34static __inline uint16_t
35be16dec(const void *pp)
36{
37	uint8_t const *p = (uint8_t const *)pp;
38
39	return ((p[0] << 8) | p[1]);
40}
41
42static __inline void
43be16enc(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
51static __inline void
52be32enc(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
62static __inline void
63be64enc(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
71static __inline uint16_t
72le16dec(const void *pp)
73{
74	uint8_t const *p = (uint8_t const *)pp;
75
76	return ((p[1] << 8) | p[0]);
77}
78
79static __inline void
80le16enc(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
88static __inline void
89le32enc(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
99static __inline void
100le64enc(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