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 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 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 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 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 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 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 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 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