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3960
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1 /*
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2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef OS_CPU_BSD_ZERO_VM_BYTES_BSD_ZERO_INLINE_HPP
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26 #define OS_CPU_BSD_ZERO_VM_BYTES_BSD_ZERO_INLINE_HPP
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27
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28 // Efficient swapping of data bytes from Java byte
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29 // ordering to native byte ordering and vice versa.
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30
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31 #ifdef __APPLE__
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32 #include <libkern/OSByteOrder.h>
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33 #else
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34 # include <sys/endian.h>
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35 #endif
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36
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37 #if defined(__APPLE__)
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38 # define bswap_16(x) OSSwapInt16(x)
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39 # define bswap_32(x) OSSwapInt32(x)
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40 # define bswap_64(x) OSSwapInt64(x)
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41 #elif defined(__OpenBSD__)
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42 # define bswap_16(x) swap16(x)
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43 # define bswap_32(x) swap32(x)
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44 # define bswap_64(x) swap64(x)
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45 #elif defined(__NetBSD__)
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46 # define bswap_16(x) bswap16(x)
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47 # define bswap_32(x) bswap32(x)
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48 # define bswap_64(x) bswap64(x)
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49 #else
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50 # define bswap_16(x) __bswap16(x)
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51 # define bswap_32(x) __bswap32(x)
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52 # define bswap_64(x) __bswap64(x)
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53 #endif
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54
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55 inline u2 Bytes::swap_u2(u2 x) {
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56 return bswap_16(x);
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57 }
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58
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59 inline u4 Bytes::swap_u4(u4 x) {
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60 return bswap_32(x);
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61 }
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62
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63 inline u8 Bytes::swap_u8(u8 x) {
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64 return bswap_64(x);
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65 }
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66
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67 #endif // OS_CPU_BSD_ZERO_VM_BYTES_BSD_ZERO_INLINE_HPP
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