120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/* $FreeBSD$ */
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/*
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* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _USB_ENDIAN_H_
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#define _USB_ENDIAN_H_
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#include <sys/stdint.h>
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#include <sys/endian.h>
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/*
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* Declare the basic USB record types. USB records have an alignment
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* of 1 byte and are always packed.
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*/
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typedef uint8_t uByte;
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typedef uint8_t uWord[2];
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typedef uint8_t uDWord[4];
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typedef uint8_t uQWord[8];
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/*
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* Define a set of macros that can get and set data independent of
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* CPU endianness and CPU alignment requirements:
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*/
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#define UGETB(w) \
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((w)[0])
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#define UGETW(w) \
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((w)[0] | \
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(((uint16_t)((w)[1])) << 8))
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#define UGETDW(w) \
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((w)[0] | \
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(((uint16_t)((w)[1])) << 8) | \
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(((uint32_t)((w)[2])) << 16) | \
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(((uint32_t)((w)[3])) << 24))
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#define UGETQW(w) \
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((w)[0] | \
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(((uint16_t)((w)[1])) << 8) | \
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(((uint32_t)((w)[2])) << 16) | \
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(((uint32_t)((w)[3])) << 24) | \
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(((uint64_t)((w)[4])) << 32) | \
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(((uint64_t)((w)[5])) << 40) | \
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(((uint64_t)((w)[6])) << 48) | \
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(((uint64_t)((w)[7])) << 56))
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#define USETB(w,v) do { \
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(w)[0] = (uint8_t)(v); \
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} while (0)
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#define USETW(w,v) do { \
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(w)[0] = (uint8_t)(v); \
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(w)[1] = (uint8_t)((v) >> 8); \
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} while (0)
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#define USETDW(w,v) do { \
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(w)[0] = (uint8_t)(v); \
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(w)[1] = (uint8_t)((v) >> 8); \
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(w)[2] = (uint8_t)((v) >> 16); \
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(w)[3] = (uint8_t)((v) >> 24); \
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} while (0)
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#define USETQW(w,v) do { \
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(w)[0] = (uint8_t)(v); \
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(w)[1] = (uint8_t)((v) >> 8); \
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(w)[2] = (uint8_t)((v) >> 16); \
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(w)[3] = (uint8_t)((v) >> 24); \
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(w)[4] = (uint8_t)((v) >> 32); \
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(w)[5] = (uint8_t)((v) >> 40); \
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(w)[6] = (uint8_t)((v) >> 48); \
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(w)[7] = (uint8_t)((v) >> 56); \
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} while (0)
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#define USETW2(w,b1,b0) do { \
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(w)[0] = (uint8_t)(b0); \
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(w)[1] = (uint8_t)(b1); \
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} while (0)
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#define USETW4(w,b3,b2,b1,b0) do { \
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(w)[0] = (uint8_t)(b0); \
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(w)[1] = (uint8_t)(b1); \
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(w)[2] = (uint8_t)(b2); \
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(w)[3] = (uint8_t)(b3); \
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} while (0)
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#define USETW8(w,b7,b6,b5,b4,b3,b2,b1,b0) do { \
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(w)[0] = (uint8_t)(b0); \
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(w)[1] = (uint8_t)(b1); \
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(w)[2] = (uint8_t)(b2); \
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(w)[3] = (uint8_t)(b3); \
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(w)[4] = (uint8_t)(b4); \
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(w)[5] = (uint8_t)(b5); \
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(w)[6] = (uint8_t)(b6); \
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(w)[7] = (uint8_t)(b7); \
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} while (0)
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#endif /* _USB_ENDIAN_H_ */
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