Mercurial > hg > graal-compiler

comparison src/os_cpu/windows_x86/vm/bytes_windows_x86.inline.hpp @ 0:a61af66fc99e jdk7-b24

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children c18cbe5936b8
comparison
equal deleted inserted replaced
-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1998 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 #pragma warning(disable: 4035) // Disable warning 4035: no return value
26
27 // Efficient swapping of data bytes from Java byte
28 // ordering to native byte ordering and vice versa.
29 inline u2 Bytes::swap_u2(u2 x) {
30 #ifdef AMD64
31 address p = (address) &x;
32 return ( (u2(p[0]) << 8 ) | ( u2(p[1])) );
33 #else
34 __asm {
35 mov ax, x
36 xchg al, ah
37 }
38 // no return statement needed, result is already in ax
39 // compiler warning C4035 disabled via warning pragma
40 #endif // AMD64
41 }
42
43 inline u4 Bytes::swap_u4(u4 x) {
44 #ifdef AMD64
45 address p = (address) &x;
46 return ( (u4(p[0]) << 24) | (u4(p[1]) << 16) | (u4(p[2]) << 8) | u4(p[3])) ;
47 #else
48 __asm {
49 mov eax, x
50 bswap eax
51 }
52 // no return statement needed, result is already in eax
53 // compiler warning C4035 disabled via warning pragma
54 #endif // AMD64
55 }
56
57 #ifdef AMD64
58 inline u8 Bytes::swap_u8(u8 x) {
59 address p = (address) &x;
60 return ( (u8(p[0]) << 56) | (u8(p[1]) << 48) | (u8(p[2]) << 40) | (u8(p[3]) << 32) |
61 (u8(p[4]) << 24) | (u8(p[5]) << 16) | (u8(p[6]) << 8) | u8(p[7])) ;
62 }
63
64 #else
65 // Helper function for swap_u8
66 inline u8 Bytes::swap_u8_base(u4 x, u4 y) {
67 __asm {
68 mov eax, y
69 mov edx, x
70 bswap eax
71 bswap edx
72 }
73 // no return statement needed, result is already in edx:eax
74 // compiler warning C4035 disabled via warning pragma
75 }
76
77 inline u8 Bytes::swap_u8(u8 x) {
78 return swap_u8_base(*(u4*)&x, *(((u4*)&x)+1));
79 }
80 #endif // AMD64
81
82 #pragma warning(default: 4035) // Enable warning 4035: no return value