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1 /* | |
2 * Copyright (C) 2012 Google Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Redistributions in binary form must reproduce the above | |
11 * copyright notice, this list of conditions and the following disclaimer | |
12 * in the documentation and/or other materials provided with the | |
13 * distribution. | |
14 * * Neither the name of Google Inc. nor the names of its | |
15 * contributors may be used to endorse or promote products derived from | |
16 * this software without specific prior written permission. | |
17 * | |
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 */ | |
30 | |
31 #ifndef WTF_ByteOrder_h | |
32 #define WTF_ByteOrder_h | |
33 | |
34 #include <wtf/Platform.h> | |
35 | |
36 #if OS(UNIX) | |
37 #include <arpa/inet.h> | |
38 #endif | |
39 | |
40 #if OS(WINDOWS) | |
41 | |
42 namespace WTF { | |
43 inline uint32_t wswap32(uint32_t x) { return ((x & 0xffff0000) >> 16) | ((x & 0x
0000ffff) << 16); } | |
44 inline uint32_t bswap32(uint32_t x) { return ((x & 0xff000000) >> 24) | ((x & 0x
00ff0000) >> 8) | ((x & 0x0000ff00) << 8) | ((x & 0x000000ff) << 24); } | |
45 inline uint16_t bswap16(uint16_t x) { return ((x & 0xff00) >> 8) | ((x & 0x00ff)
<< 8); } | |
46 } // namespace WTF | |
47 | |
48 #if CPU(BIG_ENDIAN) | |
49 inline uint16_t ntohs(uint16_t x) { return x; } | |
50 inline uint16_t htons(uint16_t x) { return x; } | |
51 inline uint32_t ntohl(uint32_t x) { return x; } | |
52 inline uint32_t htonl(uint32_t x) { return x; } | |
53 #elif CPU(MIDDLE_ENDIAN) | |
54 inline uint16_t ntohs(uint16_t x) { return x; } | |
55 inline uint16_t htons(uint16_t x) { return x; } | |
56 inline uint32_t ntohl(uint32_t x) { return WTF::wswap32(x); } | |
57 inline uint32_t htonl(uint32_t x) { return WTF::wswap32(x); } | |
58 #else | |
59 inline uint16_t ntohs(uint16_t x) { return WTF::bswap16(x); } | |
60 inline uint16_t htons(uint16_t x) { return WTF::bswap16(x); } | |
61 inline uint32_t ntohl(uint32_t x) { return WTF::bswap32(x); } | |
62 inline uint32_t htonl(uint32_t x) { return WTF::bswap32(x); } | |
63 #endif | |
64 | |
65 #endif // OS(WINDOWS) | |
66 | |
67 #endif // WTF_ByteOrder_h | |
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