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 28static 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 37static 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 45static void pd_disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count) { 46 pd_disjoint_words(from, to, count); 47} 48 49static void pd_aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { 50 pd_conjoint_words(from, to, count); 51} 52 53static void pd_aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { 54 pd_disjoint_words(from, to, count); 55} 56 57static void pd_conjoint_bytes(void* from, void* to, size_t count) { 58 memmove(to, from, count); 59} 60 61static void pd_conjoint_bytes_atomic(void* from, void* to, size_t count) { 62 pd_conjoint_bytes(from, to, count); 63} 64 65static 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 73static 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 83static 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 92static 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 107static void pd_arrayof_conjoint_bytes(HeapWord* from, HeapWord* to, size_t count) { 108 pd_conjoint_bytes_atomic((void*)from, (void*)to, count); 109} 110 111static void pd_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) { 112 pd_conjoint_jshorts_atomic((jshort*)from, (jshort*)to, count); 113} 114 115static void pd_arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) { 116 pd_conjoint_jints_atomic((jint*)from, (jint*)to, count); 117} 118 119static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) { 120 pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count); 121} 122 123static 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 128