bytes_bsd_zero.inline.hpp revision 2721:f08d439fab8c 
1/*
2 * Copyright (c) 2003, 2010, 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
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23 */
24
25#ifndef OS_CPU_BSD_ZERO_VM_BYTES_BSD_ZERO_INLINE_HPP
26#define OS_CPU_BSD_ZERO_VM_BYTES_BSD_ZERO_INLINE_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
55inline u2 Bytes::swap_u2(u2 x) {
56  return bswap_16(x);
57}
58
59inline u4 Bytes::swap_u4(u4 x) {
60  return bswap_32(x);
61}
62
63inline u8 Bytes::swap_u8(u8 x) {
64  return bswap_64(x);
65}
66
67#endif // OS_CPU_BSD_ZERO_VM_BYTES_BSD_ZERO_INLINE_HPP
68