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 |
26 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
27 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
28 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 | |
42 | static inline uint16_t ByteSwap(uint16_t v) { return OSSwapInt16(v); } |
43 | static inline uint32_t ByteSwap(uint32_t v) { return OSSwapInt32(v); } |
44 | static inline uint64_t ByteSwap(uint64_t v) { return OSSwapInt64(v); } |
45 | static inline int16_t ByteSwap(int16_t v) { return OSSwapInt16(v); } |
46 | static inline int32_t ByteSwap(int32_t v) { return OSSwapInt32(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 | |
56 | static inline uint16_t ByteSwap(uint16_t v) { return bswap_16(v); } |
57 | static inline uint32_t ByteSwap(uint32_t v) { return bswap_32(v); } |
58 | static inline uint64_t ByteSwap(uint64_t v) { return bswap_64(v); } |
59 | static inline int16_t ByteSwap(int16_t v) { return bswap_16(v); } |
60 | static inline int32_t ByteSwap(int32_t v) { return bswap_32(v); } |
61 | static inline int64_t ByteSwap(int64_t v) { return bswap_64(v); } |
62 | |
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 | |