1/*
2 * Copyright (c) 1998, 2017, 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_SOLARIS_X86_VM_BYTES_SOLARIS_X86_INLINE_HPP
26#define OS_CPU_SOLARIS_X86_VM_BYTES_SOLARIS_X86_INLINE_HPP
27
28// For Sun Studio - implementation is in solaris_i486.il.
29// For gcc - implementation is just below.
30extern "C" u2 _raw_swap_u2(u2 x);
31extern "C" u4 _raw_swap_u4(u4 x);
32#ifdef AMD64
33extern "C" u8 _raw_swap_u8(u8 x);
34#else
35extern "C" u8 _raw_swap_u8(u4 x, u4 y);
36#endif // AMD64
37
38// Efficient swapping of data bytes from Java byte
39// ordering to native byte ordering and vice versa.
40inline u2   Bytes::swap_u2(u2 x) {
41  return _raw_swap_u2(x);
42}
43
44inline u4   Bytes::swap_u4(u4 x) {
45  return _raw_swap_u4(x);
46}
47
48inline u8   Bytes::swap_u8(u8 x) {
49#ifdef AMD64
50  return _raw_swap_u8(x);
51#else
52  return swap_u8_base(*(u4*)&x, *(((u4*)&x)+1));
53#endif // AMD64
54
55}
56
57#ifndef AMD64
58// Helper function for swap_u8
59inline u8   Bytes::swap_u8_base(u4 x, u4 y) {
60  return _raw_swap_u8(x, y);
61}
62#endif // !AMD64
63
64#endif // OS_CPU_SOLARIS_X86_VM_BYTES_SOLARIS_X86_INLINE_HPP
65