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 34 static __inline uint16_t 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 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 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 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 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 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 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 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