1 /*
2 * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef OS_CPU_BSD_ZERO_BYTES_BSD_ZERO_HPP
26 #define OS_CPU_BSD_ZERO_BYTES_BSD_ZERO_HPP
27
28 // Efficient swapping of data bytes from Java byte
29 // ordering to native byte ordering and vice versa.
30
31 #ifdef __APPLE__
32 # include <libkern/OSByteOrder.h>
33 #else
34 # include <sys/endian.h>
35 #endif
36
37 #if defined(__APPLE__)
38 # define bswap_16(x) OSSwapInt16(x)
39 # define bswap_32(x) OSSwapInt32(x)
40 # define bswap_64(x) OSSwapInt64(x)
41 #elif defined(__OpenBSD__)
42 # define bswap_16(x) swap16(x)
43 # define bswap_32(x) swap32(x)
44 # define bswap_64(x) swap64(x)
45 #elif defined(__NetBSD__)
46 # define bswap_16(x) bswap16(x)
47 # define bswap_32(x) bswap32(x)
48 # define bswap_64(x) bswap64(x)
49 #else
50 # define bswap_16(x) __bswap16(x)
51 # define bswap_32(x) __bswap32(x)
52 # define bswap_64(x) __bswap64(x)
53 #endif
54
swap_u2(u2 x)55 inline u2 Bytes::swap_u2(u2 x) {
56 return bswap_16(x);
57 }
58
swap_u4(u4 x)59 inline u4 Bytes::swap_u4(u4 x) {
60 return bswap_32(x);
61 }
62
swap_u8(u8 x)63 inline u8 Bytes::swap_u8(u8 x) {
64 return bswap_64(x);
65 }
66
67 #endif // OS_CPU_BSD_ZERO_BYTES_BSD_ZERO_HPP
68