annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/InlineDataDescriptor.java @ 4235:23f41c48b19b

Re-enabled Java cleaning in gate.
author Doug Simon <doug.simon@oracle.com>
date Fri, 06 Jan 2012 14:22:57 +0100
parents e233f5660da4
children
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1 /*
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2 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.sun.max.asm;
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24
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25 import java.io.*;
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26 import java.util.*;
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27
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28 import com.sun.max.asm.Label.*;
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29 import com.sun.max.program.*;
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30
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31 /**
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32 * A description of the structure of some (contiguous) inline data encoded in an instruction stream.
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33 *
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34 * A sequence of inline data descriptors can be encoded as a byte array which can later be used to guide the decoding or
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35 * disassembling of the associated instruction stream.
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36 */
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37 public abstract class InlineDataDescriptor implements Comparable<InlineDataDescriptor> {
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38
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39 /**
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40 * Constants for the supported types of inline data.
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41 */
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42 public enum Tag {
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43 /**
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44 * @see ByteData
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45 */
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46 BYTE_DATA {
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47 @Override
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48 public InlineDataDescriptor decode(DataInputStream dataInputStream) throws IOException {
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49 return new ByteData(dataInputStream);
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50 }
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51 },
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52
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53 /**
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54 * @see Ascii
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55 */
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56 ASCII {
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57 @Override
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58 public InlineDataDescriptor decode(DataInputStream dataInputStream) throws IOException {
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59 return new Ascii(dataInputStream);
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60 }
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61 },
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62
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63 /**
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64 * @see JumpTable32
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65 */
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66 JUMP_TABLE32 {
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67 @Override
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68 public InlineDataDescriptor decode(DataInputStream dataInputStream) throws IOException {
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69 return new JumpTable32(dataInputStream);
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70 }
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71 },
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72
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73 /**
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74 * @see LookupTable32
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75 */
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76 LOOKUP_TABLE32 {
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77 @Override
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78 public InlineDataDescriptor decode(DataInputStream dataInputStream) throws IOException {
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79 return new LookupTable32(dataInputStream);
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80 }
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81 };
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82
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83 /**
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84 * Decodes an inline data descriptor from a given stream from which a byte corresponding
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85 * to this tag's ordinal was just read. That is, this method decodes the inline data descriptor
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86 * associated with this tag.
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87 */
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88 public abstract InlineDataDescriptor decode(DataInputStream dataInputStream) throws IOException;
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89
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90 public static final List<Tag> VALUES = Arrays.asList(values());
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91 }
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92
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93 /**
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94 * Gets the tag denoting the type of this inline data descriptor.
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95 */
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96 public abstract Tag tag();
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97
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98 /**
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99 * Gets the position in the instruction stream at which the inline data described by this descriptor starts.
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100 *
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101 * This method should not be called until the associated instruction stream has
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102 * been completely encoded and fixed up. Until then, the final position of the
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103 * inline data described by this descriptor may not have been established.
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104 */
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105 public abstract int startPosition();
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106
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107 /**
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108 * Gets the position in the instruction stream one byte past the inline data described by this descriptor.
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109 *
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110 * This method should not be called until the associated instruction stream has
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111 * been completely encoded and fixed up. Until then, the final position of the
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112 * inline data described by this descriptor may not have been established.
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113 */
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114 public int endPosition() {
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115 return startPosition() + size();
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116 }
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117
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118 /**
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119 * Gets the number of bytes of inline data described by this descriptor.
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120 */
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121 public abstract int size();
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122
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123 public final void writeTo(DataOutputStream dataOutputStream) throws IOException {
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124 dataOutputStream.writeByte(tag().ordinal());
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125 writeBody(dataOutputStream);
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126 }
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127
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128 protected abstract void writeBody(DataOutputStream dataOutputStream) throws IOException;
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129
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130 /**
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131 * Compares this descriptor with another for order. The order imposed by this method sorts descriptors in ascending
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132 * order according to their {@linkplain #startPosition() start} positions. If instruction stream range of two
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133 * descriptors overlap, then exactly one of the descriptors must describe unstructured {@linkplain ByteData byte
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134 * data} which will come later in the sort order.
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135 */
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136 public int compareTo(InlineDataDescriptor other) {
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137 if (this == other) {
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138 return 0;
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139 }
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140
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141 final int thisStart = startPosition();
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142 final int otherStart = other.startPosition();
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143 if (thisStart < otherStart) {
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144 return -1;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
145 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
146 if (thisStart > otherStart) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
147 return 1;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
148 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
149 if (this instanceof ByteData) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
150 assert !(other instanceof ByteData) : "Inline data segments can only overlap if exactly one is a raw inline data segment";
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
151 // Non-raw data sorts first
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
152 return 1;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
153 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
154 assert other instanceof ByteData : "Inline data segments can only overlap if exactly one is a raw inline data segment";
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
155 // Non-raw data sorts first
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
156 return -1;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
157 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
158
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
159 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
160 public String toString() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
161 return getClass().getSimpleName();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
162 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
163
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
164 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
165 * Describes an unstructured sequence of non-code bytes in an instruction stream.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
166 */
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
167 public static class ByteData extends InlineDataDescriptor {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
168 private final Label startPosition;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
169 private final int size;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
170
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
171 public ByteData(Label startPosition, int size) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
172 this.startPosition = startPosition;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
173 this.size = size;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
174 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
175
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
176 public ByteData(int startPosition, int size) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
177 this(Label.createBoundLabel(startPosition), size);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
178 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
179
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
180 public ByteData(DataInputStream dataInputStream) throws IOException {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
181 startPosition = new Label();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
182 startPosition.bind(dataInputStream.readInt());
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
183 size = dataInputStream.readInt();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
184 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
185
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
186 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
187 public void writeBody(DataOutputStream dataOutputStream) throws IOException {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
188 dataOutputStream.writeInt(startPosition());
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
189 dataOutputStream.writeInt(size);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
190 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
191
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
192 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
193 public int size() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
194 return size;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
195 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
196
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
197 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
198 public int startPosition() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
199 try {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
200 return startPosition.position();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
201 } catch (AssemblyException assemblyException) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
202 throw ProgramError.unexpected("Cannot get start position of " + getClass().getSimpleName() + " until labels have been fixed", assemblyException);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
203 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
204 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
205
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
206 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
207 public Tag tag() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
208 return Tag.BYTE_DATA;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
209 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
210
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
211 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
212 public String toString() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
213 return super.toString() + "[start=" + startPosition() + ", size=" + size() + "]";
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
214 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
215 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
216
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
217 public static class Ascii extends ByteData {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
218
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
219 public Ascii(DataInputStream dataInputStream) throws IOException {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
220 super(dataInputStream);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
221 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
222
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
223 public Ascii(int startPosition, int size) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
224 super(startPosition, size);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
225 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
226
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
227 public Ascii(Label startPosition, int size) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
228 super(startPosition, size);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
229 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
230
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
231 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
232 public Tag tag() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
233 return Tag.ASCII;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
234 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
235 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
236
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
237 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
238 * Describes a table of 32 bit offsets. This type of table is usually used when translating a construct for
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
239 * transferring control to a number of code locations based on a key value from a dense value set (e.g. the {@code
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
240 * tableswitch} JVM instruction). The offset in each table entry is relative to the address of the table.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
241 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
242 * The table is indexed by the contiguous range of integers from {@linkplain #low low} to {@linkplain #high high}
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
243 * inclusive. The number of entries is given by the expression {@code high() - low() + 1}.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
244 */
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
245 public static final class JumpTable32 extends InlineDataDescriptor {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
246 private final Label tablePosition;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
247 private final int low;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
248 private final int high;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
249
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
250 public JumpTable32(int tablePosition, int low, int high) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
251 this(Label.createBoundLabel(tablePosition), low, high);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
252 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
253
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
254 public JumpTable32(Label tablePosition, int low, int high) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
255 this.tablePosition = tablePosition;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
256 this.low = low;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
257 this.high = high;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
258 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
259
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
260 public JumpTable32(DataInputStream dataInputStream) throws IOException {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
261 tablePosition = new Label();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
262 tablePosition.bind(dataInputStream.readInt());
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
263 low = dataInputStream.readInt();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
264 high = dataInputStream.readInt();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
265 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
266
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
267 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
268 public void writeBody(DataOutputStream dataOutputStream) throws IOException {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
269 dataOutputStream.writeInt(startPosition());
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
270 dataOutputStream.writeInt(low);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
271 dataOutputStream.writeInt(high);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
272 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
273
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
274 public int numberOfEntries() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
275 return high - low + 1;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
276 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
277
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
278 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
279 public int size() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
280 return numberOfEntries() * 4;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
281 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
282
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
283 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
284 public int startPosition() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
285 try {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
286 return tablePosition.position();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
287 } catch (AssemblyException assemblyException) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
288 throw ProgramError.unexpected("Cannot get start position of " + getClass().getSimpleName() + " until labels have been fixed", assemblyException);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
289 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
290 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
291
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
292 public int tablePosition() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
293 return startPosition();
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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294 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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295
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
296 @Override
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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297 public Tag tag() {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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298 return Tag.JUMP_TABLE32;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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299 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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300
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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301 public int low() {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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302 return low;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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303 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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304
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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305 public int high() {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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306 return high;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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307 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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308
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
309 @Override
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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310 public String toString() {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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311 final String start = tablePosition.state() != State.BOUND ? "?" : String.valueOf(startPosition());
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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312 return super.toString() + "[start=" + start + ", size=" + size() + ", low=" + low + ", high=" + high + "]";
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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313 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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314 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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315
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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316 /**
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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317 * Describes a table of 32-bit value and offset pairs. The offset in each table entry is relative to the address of
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
318 * the table.
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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319 *
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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320 * This type of table is usually used when translating a language level construct for transferring control to a
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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321 * number of code locations based on a key value from a sparse value set (e.g. the {@code lookupswitch} JVM
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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322 * instruction).
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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323 */
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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324 public static final class LookupTable32 extends InlineDataDescriptor {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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325 private final Label tablePosition;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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326 private final int numberOfEntries;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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327
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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328 public LookupTable32(int tablePosition, int numberOfEntries) {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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329 this(Label.createBoundLabel(tablePosition), numberOfEntries);
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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330 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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331
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
332 public LookupTable32(Label tablePosition, int numberOfEntries) {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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333 this.tablePosition = tablePosition;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
334 this.numberOfEntries = numberOfEntries;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
335 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
336
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
337 public LookupTable32(DataInputStream dataInputStream) throws IOException {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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338 tablePosition = new Label();
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
339 tablePosition.bind(dataInputStream.readInt());
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
340 numberOfEntries = dataInputStream.readInt();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
341 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
342
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
343 @Override
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
344 public void writeBody(DataOutputStream dataOutputStream) throws IOException {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
345 dataOutputStream.writeInt(startPosition());
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
346 dataOutputStream.writeInt(numberOfEntries);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
347 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
348
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
349 public int numberOfEntries() {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
350 return numberOfEntries;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
351 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
352
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
353 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
354 public int size() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
355 return numberOfEntries() * 8;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
356 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
357
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
358 @Override
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
359 public int startPosition() {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
360 try {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
361 return tablePosition.position();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
362 } catch (AssemblyException assemblyException) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
363 throw ProgramError.unexpected("Cannot get start position of " + getClass().getSimpleName() + " until labels have been fixed", assemblyException);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
364 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
365 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
366
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
367 public int tablePosition() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
368 return startPosition();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
369 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
370
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
371 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
372 public Tag tag() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
373 return Tag.LOOKUP_TABLE32;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
374 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
375
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
376 @Override
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
377 public String toString() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
378 final String start = tablePosition.state() != State.BOUND ? "?" : String.valueOf(startPosition());
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
379 return super.toString() + "[start=" + start + ", size=" + size() + ", numberOfEntries=" + numberOfEntries + "]";
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
380 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
381 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
382 }