Mercurial > hg > graal-compiler
annotate graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/Architecture.java @ 21565:f5b549811bac
fixed eclipseformat issues
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 29 May 2015 00:35:10 +0200 |
parents | 48c1ebd24120 |
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1 /* |
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2 * Copyright (c) 2009, 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.oracle.jvmci.code; |
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24 |
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25 import com.oracle.jvmci.meta.Kind; |
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26 import com.oracle.jvmci.meta.PlatformKind; |
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27 import java.nio.*; |
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28 import java.util.*; |
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29 |
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30 import com.oracle.jvmci.code.Register.RegisterCategory; |
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31 |
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32 /** |
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33 * Represents a CPU architecture, including information such as its endianness, CPU registers, word |
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34 * width, etc. |
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35 */ |
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36 public abstract class Architecture { |
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37 |
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38 /** |
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39 * The number of entries required in a {@link ReferenceMap} covering all the registers that may |
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40 * store references. The index of a register in the reference map is given by |
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41 * {@link Register#getReferenceMapIndex()}. |
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42 */ |
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43 private final int registerReferenceMapSize; |
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44 |
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45 /** |
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46 * Represents the natural size of words (typically registers and pointers) of this architecture, |
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47 * in bytes. |
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48 */ |
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49 private final int wordSize; |
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50 |
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51 /** |
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52 * The name of this architecture (e.g. "AMD64", "SPARCv9"). |
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53 */ |
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54 private final String name; |
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55 |
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56 /** |
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57 * Array of all available registers on this architecture. The index of each register in this |
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58 * array is equal to its {@linkplain Register#number number}. |
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59 */ |
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60 private final Register[] registers; |
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61 |
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62 /** |
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63 * The byte ordering can be either little or big endian. |
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64 */ |
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65 private final ByteOrder byteOrder; |
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66 |
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67 /** |
10898 | 68 * Whether the architecture supports unaligned memory accesses. |
69 */ | |
70 private final boolean unalignedMemoryAccess; | |
71 | |
72 /** | |
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73 * Mask of the barrier constants denoting the barriers that are not required to be explicitly |
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74 * inserted under this architecture. |
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75 */ |
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76 private final int implicitMemoryBarriers; |
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77 |
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78 /** |
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79 * Offset in bytes from the beginning of a call instruction to the displacement. |
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80 */ |
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81 private final int machineCodeCallDisplacementOffset; |
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82 |
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83 /** |
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84 * The size of the return address pushed to the stack by a call instruction. A value of 0 |
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85 * denotes that call linkage uses registers instead (e.g. SPARC). |
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86 */ |
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87 private final int returnAddressSize; |
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88 |
10898 | 89 protected Architecture(String name, int wordSize, ByteOrder byteOrder, boolean unalignedMemoryAccess, Register[] registers, int implicitMemoryBarriers, int nativeCallDisplacementOffset, |
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90 int registerReferenceMapSize, int returnAddressSize) { |
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91 this.name = name; |
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92 this.registers = registers; |
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93 this.wordSize = wordSize; |
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94 this.byteOrder = byteOrder; |
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96 this.implicitMemoryBarriers = implicitMemoryBarriers; |
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97 this.machineCodeCallDisplacementOffset = nativeCallDisplacementOffset; |
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98 this.registerReferenceMapSize = registerReferenceMapSize; |
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99 this.returnAddressSize = returnAddressSize; |
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100 } |
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101 |
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102 /** |
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103 * Converts this architecture to a string. |
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104 * |
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105 * @return the string representation of this architecture |
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106 */ |
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107 @Override |
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108 public final String toString() { |
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109 return getName().toLowerCase(); |
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110 } |
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111 |
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112 public int getRegisterReferenceMapSize() { |
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113 return registerReferenceMapSize; |
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114 } |
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115 |
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116 /** |
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117 * Gets the natural size of words (typically registers and pointers) of this architecture, in |
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118 * bytes. |
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119 */ |
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120 public int getWordSize() { |
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121 return wordSize; |
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122 } |
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123 |
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124 /** |
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125 * Gets the name of this architecture. |
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126 */ |
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127 public String getName() { |
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128 return name; |
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129 } |
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130 |
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131 /** |
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132 * Gets an array of all available registers on this architecture. The index of each register in |
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133 * this array is equal to its {@linkplain Register#number number}. |
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134 */ |
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135 public Register[] getRegisters() { |
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136 return registers.clone(); |
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137 } |
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138 |
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139 public ByteOrder getByteOrder() { |
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140 return byteOrder; |
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141 } |
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142 |
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143 /** |
10898 | 144 * @return true if the architecture supports unaligned memory accesses. |
145 */ | |
146 public boolean supportsUnalignedMemoryAccess() { | |
147 return unalignedMemoryAccess; | |
148 } | |
149 | |
150 /** | |
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151 * Gets the size of the return address pushed to the stack by a call instruction. A value of 0 |
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152 * denotes that call linkage uses registers instead. |
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153 */ |
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154 public int getReturnAddressSize() { |
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155 return returnAddressSize; |
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156 } |
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157 |
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158 /** |
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159 * Gets the offset in bytes from the beginning of a call instruction to the displacement. |
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160 */ |
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161 public int getMachineCodeCallDisplacementOffset() { |
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162 return machineCodeCallDisplacementOffset; |
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163 } |
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164 |
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165 /** |
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166 * Determines the barriers in a given barrier mask that are explicitly required on this |
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167 * architecture. |
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168 * |
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169 * @param barriers a mask of the barrier constants |
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170 * @return the value of {@code barriers} minus the barriers unnecessary on this architecture |
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171 */ |
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172 public final int requiredBarriers(int barriers) { |
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173 return barriers & ~implicitMemoryBarriers; |
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174 } |
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175 |
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176 /** |
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177 * Gets the size in bytes of the specified kind for this target. |
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178 * |
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179 * @param kind the kind for which to get the size |
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180 * |
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181 * @return the size in bytes of {@code kind} |
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182 */ |
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183 public int getSizeInBytes(PlatformKind kind) { |
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184 switch ((Kind) kind) { |
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185 case Boolean: |
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186 return 1; |
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187 case Byte: |
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188 return 1; |
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189 case Char: |
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190 return 2; |
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191 case Short: |
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192 return 2; |
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193 case Int: |
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194 return 4; |
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195 case Long: |
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196 return 8; |
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197 case Float: |
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198 return 4; |
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199 case Double: |
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200 return 8; |
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201 case Object: |
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202 return wordSize; |
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203 default: |
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204 return 0; |
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205 } |
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206 } |
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207 |
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208 /** |
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209 * Determine whether a kind can be stored in a register of a given category. |
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210 * |
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211 * @param category the category of the register |
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212 * @param kind the kind that should be stored in the register |
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213 */ |
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214 public abstract boolean canStoreValue(RegisterCategory category, PlatformKind kind); |
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215 |
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216 /** |
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217 * Return the largest kind that can be stored in a register of a given category. |
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218 * |
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219 * @param category the category of the register |
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220 * @return the largest kind that can be stored in a register {@code category} |
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221 */ |
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222 public abstract PlatformKind getLargestStorableKind(RegisterCategory category); |
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223 |
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224 @Override |
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225 public final boolean equals(Object obj) { |
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226 if (obj == this) { |
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227 return true; |
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228 } |
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229 if (obj instanceof Architecture) { |
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230 Architecture that = (Architecture) obj; |
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231 if (this.name.equals(that.name)) { |
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232 assert this.byteOrder.equals(that.byteOrder); |
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233 assert this.implicitMemoryBarriers == that.implicitMemoryBarriers; |
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234 assert this.machineCodeCallDisplacementOffset == that.machineCodeCallDisplacementOffset; |
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235 assert this.registerReferenceMapSize == that.registerReferenceMapSize; |
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236 assert Arrays.equals(this.registers, that.registers); |
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237 assert this.returnAddressSize == that.returnAddressSize; |
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238 assert this.unalignedMemoryAccess == that.unalignedMemoryAccess; |
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239 assert this.wordSize == that.wordSize; |
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240 return true; |
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241 } |
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242 } |
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243 return false; |
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244 } |
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245 |
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246 @Override |
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247 public final int hashCode() { |
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248 return name.hashCode(); |
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249 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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