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comparison src/cpu/x86/vm/copy_x86.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2003-2004 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 // Inline functions for memory copy and fill.
26
27 // Contains inline asm implementations
28 #include "incls/_copy_pd.inline.hpp.incl"
29
30 static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) {
31 #ifdef AMD64
32 julong* to = (julong*) tohw;
33 julong v = ((julong) value << 32) | value;
34 while (count-- > 0) {
35 *to++ = v;
36 }
37 #else
38 juint* to = (juint*)tohw;
39 count *= HeapWordSize / BytesPerInt;
40 while (count-- > 0) {
41 *to++ = value;
42 }
43 #endif // AMD64
44 }
45
46 static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) {
47 pd_fill_to_words(tohw, count, value);
48 }
49
50 static void pd_fill_to_bytes(void* to, size_t count, jubyte value) {
51 (void)memset(to, value, count);
52 }
53
54 static void pd_zero_to_words(HeapWord* tohw, size_t count) {
55 pd_fill_to_words(tohw, count, 0);
56 }
57
58 static void pd_zero_to_bytes(void* to, size_t count) {
59 (void)memset(to, 0, count);
60 }