1 // -*- mode: c++ -*-
2
3 // Copyright (c) 2010, Google Inc.
4 // 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 are
8 // met:
9 //
10 // * Redistributions of source code must retain the above copyright
11 // notice, this list of conditions and the following disclaimer.
12 // * Redistributions in binary form must reproduce the above
13 // copyright notice, this list of conditions and the following disclaimer
14 // in the documentation and/or other materials provided with the
15 // distribution.
16 // * Neither the name of Google Inc. nor the names of its
17 // contributors may be used to endorse or promote products derived from
18 // this software without specific prior written permission.
19 //
20 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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27 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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29 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31
32 // Original author: Jim Blandy <jim@mozilla.com> <jimb@red-bean.com>
33
34 // byteswap.h: Overloaded functions for conveniently byteswapping values.
35
36 #ifndef COMMON_MAC_BYTESWAP_H_
37 #define COMMON_MAC_BYTESWAP_H_
38
39 #ifdef __APPLE__
40 #include <libkern/OSByteOrder.h>
41
ByteSwap(uint16_t v)42 static inline uint16_t ByteSwap(uint16_t v) { return OSSwapInt16(v); }
ByteSwap(uint32_t v)43 static inline uint32_t ByteSwap(uint32_t v) { return OSSwapInt32(v); }
ByteSwap(uint64_t v)44 static inline uint64_t ByteSwap(uint64_t v) { return OSSwapInt64(v); }
ByteSwap(int16_t v)45 static inline int16_t ByteSwap(int16_t v) { return OSSwapInt16(v); }
ByteSwap(int32_t v)46 static inline int32_t ByteSwap(int32_t v) { return OSSwapInt32(v); }
ByteSwap(int64_t v)47 static inline int64_t ByteSwap(int64_t v) { return OSSwapInt64(v); }
48
49 #elif defined(__linux__)
50 // For NXByteOrder
51 #include <architecture/byte_order.h>
52 #include <stdint.h>
53 #include <endian.h>
54 #include_next <byteswap.h>
55
ByteSwap(uint16_t v)56 static inline uint16_t ByteSwap(uint16_t v) { return bswap_16(v); }
ByteSwap(uint32_t v)57 static inline uint32_t ByteSwap(uint32_t v) { return bswap_32(v); }
ByteSwap(uint64_t v)58 static inline uint64_t ByteSwap(uint64_t v) { return bswap_64(v); }
ByteSwap(int16_t v)59 static inline int16_t ByteSwap(int16_t v) { return bswap_16(v); }
ByteSwap(int32_t v)60 static inline int32_t ByteSwap(int32_t v) { return bswap_32(v); }
ByteSwap(int64_t v)61 static inline int64_t ByteSwap(int64_t v) { return bswap_64(v); }
62
NXHostByteOrder()63 static inline NXByteOrder NXHostByteOrder() {
64 #ifdef __LITTLE_ENDIAN
65 return NX_LittleEndian;
66 #else
67 return NX_BigEndian;
68 #endif
69 }
70
71 #endif // __APPLE__
72
73 #endif // COMMON_MAC_BYTESWAP_H_
74