1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/zero/vm/copy_zero.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,183 @@
1.4 +/*
1.5 + * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2007 Red Hat, Inc.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 + * or visit www.oracle.com if you need additional information or have any
1.25 + * questions.
1.26 + *
1.27 + */
1.28 +
1.29 +#ifndef CPU_ZERO_VM_COPY_ZERO_HPP
1.30 +#define CPU_ZERO_VM_COPY_ZERO_HPP
1.31 +
1.32 +// Inline functions for memory copy and fill.
1.33 +
1.34 +static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
1.35 + memmove(to, from, count * HeapWordSize);
1.36 +}
1.37 +
1.38 +static void pd_disjoint_words(HeapWord* from, HeapWord* to, size_t count) {
1.39 + switch (count) {
1.40 + case 8: to[7] = from[7];
1.41 + case 7: to[6] = from[6];
1.42 + case 6: to[5] = from[5];
1.43 + case 5: to[4] = from[4];
1.44 + case 4: to[3] = from[3];
1.45 + case 3: to[2] = from[2];
1.46 + case 2: to[1] = from[1];
1.47 + case 1: to[0] = from[0];
1.48 + case 0: break;
1.49 + default:
1.50 + memcpy(to, from, count * HeapWordSize);
1.51 + break;
1.52 + }
1.53 +}
1.54 +
1.55 +static void pd_disjoint_words_atomic(HeapWord* from,
1.56 + HeapWord* to,
1.57 + size_t count) {
1.58 + switch (count) {
1.59 + case 8: to[7] = from[7];
1.60 + case 7: to[6] = from[6];
1.61 + case 6: to[5] = from[5];
1.62 + case 5: to[4] = from[4];
1.63 + case 4: to[3] = from[3];
1.64 + case 3: to[2] = from[2];
1.65 + case 2: to[1] = from[1];
1.66 + case 1: to[0] = from[0];
1.67 + case 0: break;
1.68 + default:
1.69 + while (count-- > 0) {
1.70 + *to++ = *from++;
1.71 + }
1.72 + break;
1.73 + }
1.74 +}
1.75 +
1.76 +static void pd_aligned_conjoint_words(HeapWord* from,
1.77 + HeapWord* to,
1.78 + size_t count) {
1.79 + memmove(to, from, count * HeapWordSize);
1.80 +}
1.81 +
1.82 +static void pd_aligned_disjoint_words(HeapWord* from,
1.83 + HeapWord* to,
1.84 + size_t count) {
1.85 + pd_disjoint_words(from, to, count);
1.86 +}
1.87 +
1.88 +static void pd_conjoint_bytes(void* from, void* to, size_t count) {
1.89 + memmove(to, from, count);
1.90 +}
1.91 +
1.92 +static void pd_conjoint_bytes_atomic(void* from, void* to, size_t count) {
1.93 + memmove(to, from, count);
1.94 +}
1.95 +
1.96 +static void pd_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) {
1.97 + _Copy_conjoint_jshorts_atomic(from, to, count);
1.98 +}
1.99 +
1.100 +static void pd_conjoint_jints_atomic(jint* from, jint* to, size_t count) {
1.101 + _Copy_conjoint_jints_atomic(from, to, count);
1.102 +}
1.103 +
1.104 +static void pd_conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) {
1.105 + _Copy_conjoint_jlongs_atomic(from, to, count);
1.106 +}
1.107 +
1.108 +static void pd_conjoint_oops_atomic(oop* from, oop* to, size_t count) {
1.109 +#ifdef _LP64
1.110 + assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size");
1.111 + _Copy_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count);
1.112 +#else
1.113 + assert(BytesPerInt == BytesPerOop, "jints and oops must be the same size");
1.114 + _Copy_conjoint_jints_atomic((jint*)from, (jint*)to, count);
1.115 +#endif // _LP64
1.116 +}
1.117 +
1.118 +static void pd_arrayof_conjoint_bytes(HeapWord* from,
1.119 + HeapWord* to,
1.120 + size_t count) {
1.121 + _Copy_arrayof_conjoint_bytes(from, to, count);
1.122 +}
1.123 +
1.124 +static void pd_arrayof_conjoint_jshorts(HeapWord* from,
1.125 + HeapWord* to,
1.126 + size_t count) {
1.127 + _Copy_arrayof_conjoint_jshorts(from, to, count);
1.128 +}
1.129 +
1.130 +static void pd_arrayof_conjoint_jints(HeapWord* from,
1.131 + HeapWord* to,
1.132 + size_t count) {
1.133 + _Copy_arrayof_conjoint_jints(from, to, count);
1.134 +}
1.135 +
1.136 +static void pd_arrayof_conjoint_jlongs(HeapWord* from,
1.137 + HeapWord* to,
1.138 + size_t count) {
1.139 + _Copy_arrayof_conjoint_jlongs(from, to, count);
1.140 +}
1.141 +
1.142 +static void pd_arrayof_conjoint_oops(HeapWord* from,
1.143 + HeapWord* to,
1.144 + size_t count) {
1.145 +#ifdef _LP64
1.146 + assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size");
1.147 + _Copy_arrayof_conjoint_jlongs(from, to, count);
1.148 +#else
1.149 + assert(BytesPerInt == BytesPerOop, "jints and oops must be the same size");
1.150 + _Copy_arrayof_conjoint_jints(from, to, count);
1.151 +#endif // _LP64
1.152 +}
1.153 +
1.154 +static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) {
1.155 +#ifdef _LP64
1.156 + julong* to = (julong*) tohw;
1.157 + julong v = ((julong) value << 32) | value;
1.158 +#else
1.159 + juint* to = (juint*) tohw;
1.160 + juint v = value;
1.161 +#endif // _LP64
1.162 +
1.163 + while (count-- > 0) {
1.164 + *to++ = v;
1.165 + }
1.166 +}
1.167 +
1.168 +static void pd_fill_to_aligned_words(HeapWord* tohw,
1.169 + size_t count,
1.170 + juint value) {
1.171 + pd_fill_to_words(tohw, count, value);
1.172 +}
1.173 +
1.174 +static void pd_fill_to_bytes(void* to, size_t count, jubyte value) {
1.175 + memset(to, value, count);
1.176 +}
1.177 +
1.178 +static void pd_zero_to_words(HeapWord* tohw, size_t count) {
1.179 + pd_fill_to_words(tohw, count, 0);
1.180 +}
1.181 +
1.182 +static void pd_zero_to_bytes(void* to, size_t count) {
1.183 + memset(to, 0, count);
1.184 +}
1.185 +
1.186 +#endif // CPU_ZERO_VM_COPY_ZERO_HPP
