| 1 | /*
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| 2 | * (C) Copyright IBM Corporation 2006, 2007
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| 3 | * All Rights Reserved.
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| 4 | *
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| 5 | * Permission is hereby granted, free of charge, to any person obtaining a
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| 6 | * copy of this software and associated documentation files (the "Software"),
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| 7 | * to deal in the Software without restriction, including without limitation
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| 8 | * the rights to use, copy, modify, merge, publish, distribute, sub license,
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| 9 | * and/or sell copies of the Software, and to permit persons to whom the
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| 10 | * Software is furnished to do so, subject to the following conditions:
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| 11 | *
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| 12 | * The above copyright notice and this permission notice (including the next
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| 13 | * paragraph) shall be included in all copies or substantial portions of the
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| 14 | * Software.
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| 15 | *
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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| 19 | * THE COPYRIGHT HOLDERS, THE AUTHORS, AND/OR THEIR SUPPLIERS BE LIABLE FOR
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| 20 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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| 21 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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| 22 | * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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| 23 | */
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| 24 |
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| 25 | /**
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| 26 | * \file glxbyteorder.h
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| 27 | * Platform glue for handling byte-ordering issues in GLX protocol.
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| 28 | *
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| 29 | * \author Ian Romanick <idr@us.ibm.com>
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| 30 | */
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| 31 | #if !defined(__GLXBYTEORDER_H__)
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| 32 | #define __GLXBYTEORDER_H__
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| 33 |
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| 34 | #ifdef HAVE_DIX_CONFIG_H
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| 35 | #include <dix-config.h>
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| 36 | #endif
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| 37 |
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| 38 | #if HAVE_BYTESWAP_H
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| 39 | #include <byteswap.h>
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| 40 | #elif defined(USE_SYS_ENDIAN_H)
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| 41 | #include <sys/endian.h>
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| 42 | #elif defined(__APPLE__)
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| 43 | #include <libkern/OSByteOrder.h>
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| 44 | #define bswap_16 OSSwapInt16
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| 45 | #define bswap_32 OSSwapInt32
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| 46 | #define bswap_64 OSSwapInt64
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| 47 | #else
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| 48 | #define bswap_16(value) \
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| 49 | ((((value) & 0xff) << 8) | ((value) >> 8))
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| 50 |
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| 51 | #define bswap_32(value) \
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| 52 | (((uint32_t)bswap_16((uint16_t)((value) & 0xffff)) << 16) | \
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| 53 | (uint32_t)bswap_16((uint16_t)((value) >> 16)))
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| 54 |
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| 55 | #define bswap_64(value) \
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| 56 | (((uint64_t)bswap_32((uint32_t)((value) & 0xffffffff)) \
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| 57 | << 32) | \
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| 58 | (uint64_t)bswap_32((uint32_t)((value) >> 32)))
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| 59 | #endif
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| 60 |
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| 61 | #endif /* !defined(__GLXBYTEORDER_H__) */
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