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