1 /* 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef _USB_ENDIAN_H_ 29 #define _USB_ENDIAN_H_ 30 31 /* 32 * Declare the basic USB record types. USB records have an alignment 33 * of 1 byte and are always packed. 34 */ 35 typedef uint8_t uByte; 36 typedef uint8_t uWord[2]; 37 typedef uint8_t uDWord[4]; 38 typedef uint8_t uQWord[8]; 39 40 /* 41 * Define a set of macros that can get and set data independent of 42 * CPU endianness and CPU alignment requirements: 43 */ 44 #define UGETB(w) \ 45 ((w)[0]) 46 47 #define UGETW(w) \ 48 ((w)[0] | \ 49 (((uint16_t)((w)[1])) << 8)) 50 51 #define UGETDW(w) \ 52 ((w)[0] | \ 53 (((uint16_t)((w)[1])) << 8) | \ 54 (((uint32_t)((w)[2])) << 16) | \ 55 (((uint32_t)((w)[3])) << 24)) 56 57 #define UGETQW(w) \ 58 ((w)[0] | \ 59 (((uint16_t)((w)[1])) << 8) | \ 60 (((uint32_t)((w)[2])) << 16) | \ 61 (((uint32_t)((w)[3])) << 24) | \ 62 (((uint64_t)((w)[4])) << 32) | \ 63 (((uint64_t)((w)[5])) << 40) | \ 64 (((uint64_t)((w)[6])) << 48) | \ 65 (((uint64_t)((w)[7])) << 56)) 66 67 #define USETB(w,v) do { \ 68 (w)[0] = (uint8_t)(v); \ 69 } while (0) 70 71 #define USETW(w,v) do { \ 72 (w)[0] = (uint8_t)(v); \ 73 (w)[1] = (uint8_t)((v) >> 8); \ 74 } while (0) 75 76 #define USETDW(w,v) do { \ 77 (w)[0] = (uint8_t)(v); \ 78 (w)[1] = (uint8_t)((v) >> 8); \ 79 (w)[2] = (uint8_t)((v) >> 16); \ 80 (w)[3] = (uint8_t)((v) >> 24); \ 81 } while (0) 82 83 #define USETQW(w,v) do { \ 84 (w)[0] = (uint8_t)(v); \ 85 (w)[1] = (uint8_t)((v) >> 8); \ 86 (w)[2] = (uint8_t)((v) >> 16); \ 87 (w)[3] = (uint8_t)((v) >> 24); \ 88 (w)[4] = (uint8_t)((v) >> 32); \ 89 (w)[5] = (uint8_t)((v) >> 40); \ 90 (w)[6] = (uint8_t)((v) >> 48); \ 91 (w)[7] = (uint8_t)((v) >> 56); \ 92 } while (0) 93 94 #define USETW2(w,b1,b0) do { \ 95 (w)[0] = (uint8_t)(b0); \ 96 (w)[1] = (uint8_t)(b1); \ 97 } while (0) 98 99 #define USETW4(w,b3,b2,b1,b0) do { \ 100 (w)[0] = (uint8_t)(b0); \ 101 (w)[1] = (uint8_t)(b1); \ 102 (w)[2] = (uint8_t)(b2); \ 103 (w)[3] = (uint8_t)(b3); \ 104 } while (0) 105 106 #define USETW8(w,b7,b6,b5,b4,b3,b2,b1,b0) do { \ 107 (w)[0] = (uint8_t)(b0); \ 108 (w)[1] = (uint8_t)(b1); \ 109 (w)[2] = (uint8_t)(b2); \ 110 (w)[3] = (uint8_t)(b3); \ 111 (w)[4] = (uint8_t)(b4); \ 112 (w)[5] = (uint8_t)(b5); \ 113 (w)[6] = (uint8_t)(b6); \ 114 (w)[7] = (uint8_t)(b7); \ 115 } while (0) 116 117 #endif /* _USB_ENDIAN_H_ */ 118