1 /*
2 * Copyright (c) 2008, 2013, 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_LINUX_ARM_VM_COPY_LINUX_ARM_INLINE_HPP
26 #define OS_CPU_LINUX_ARM_VM_COPY_LINUX_ARM_INLINE_HPP
27
28 static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
29 #ifdef AARCH64
30 _Copy_conjoint_words(from, to, count * HeapWordSize);
31 #else
32 // NOTE: _Copy_* functions on 32-bit ARM expect "to" and "from" arguments in reversed order
33 _Copy_conjoint_words(to, from, count * HeapWordSize);
34 #endif
35 }
36
37 static void pd_disjoint_words(HeapWord* from, HeapWord* to, size_t count) {
38 #ifdef AARCH64
39 _Copy_disjoint_words(from, to, count * HeapWordSize);
40 #else
41 _Copy_disjoint_words(to, from, count * HeapWordSize);
42 #endif // AARCH64
43 }
44
45 static void pd_disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count) {
46 pd_disjoint_words(from, to, count);
47 }
48
49 static void pd_aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
50 pd_conjoint_words(from, to, count);
51 }
52
53 static void pd_aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count) {
54 pd_disjoint_words(from, to, count);
55 }
56
57 static void pd_conjoint_bytes(void* from, void* to, size_t count) {
58 memmove(to, from, count);
59 }
60
61 static void pd_conjoint_bytes_atomic(void* from, void* to, size_t count) {
62 pd_conjoint_bytes(from, to, count);
63 }
64
65 static void pd_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) {
66 #ifdef AARCH64
67 _Copy_conjoint_jshorts_atomic(from, to, count * BytesPerShort);
68 #else
69 _Copy_conjoint_jshorts_atomic(to, from, count * BytesPerShort);
70 #endif
71 }
72
73 static void pd_conjoint_jints_atomic(jint* from, jint* to, size_t count) {
74 #ifdef AARCH64
75 _Copy_conjoint_jints_atomic(from, to, count * BytesPerInt);
76 #else
77 assert(HeapWordSize == BytesPerInt, "heapwords and jints must be the same size");
78 // pd_conjoint_words is word-atomic in this implementation.
79 pd_conjoint_words((HeapWord*)from, (HeapWord*)to, count);
80 #endif
81 }
82
83 static void pd_conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) {
84 #ifdef AARCH64
85 assert(HeapWordSize == BytesPerLong, "64-bit architecture");
86 pd_conjoint_words((HeapWord*)from, (HeapWord*)to, count);
87 #else
88 _Copy_conjoint_jlongs_atomic(to, from, count * BytesPerLong);
89 #endif
90 }
91
92 static void pd_conjoint_oops_atomic(oop* from, oop* to, size_t count) {
93 #ifdef AARCH64
94 if (UseCompressedOops) {
95 assert(BytesPerHeapOop == BytesPerInt, "compressed oops");
96 pd_conjoint_jints_atomic((jint*)from, (jint*)to, count);
97 } else {
98 assert(BytesPerHeapOop == BytesPerLong, "64-bit architecture");
99 pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count);
100 }
101 #else
102 assert(BytesPerHeapOop == BytesPerInt, "32-bit architecture");
103 pd_conjoint_jints_atomic((jint*)from, (jint*)to, count);
104 #endif
105 }
106
107 static void pd_arrayof_conjoint_bytes(HeapWord* from, HeapWord* to, size_t count) {
108 pd_conjoint_bytes_atomic((void*)from, (void*)to, count);
109 }
110
111 static void pd_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) {
112 pd_conjoint_jshorts_atomic((jshort*)from, (jshort*)to, count);
113 }
114
115 static void pd_arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) {
116 pd_conjoint_jints_atomic((jint*)from, (jint*)to, count);
117 }
118
119 static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) {
120 pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count);
121 }
122
123 static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) {
124 pd_conjoint_oops_atomic((oop*)from, (oop*)to, count);
125 }
126
127 #endif // OS_CPU_LINUX_ARM_VM_COPY_LINUX_ARM_INLINE_HPP