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annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ri/RiRuntime.java @ 5470:044502e7b5a4

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Small clean up on RiRuntime.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Fri, 01 Jun 2012 16:31:49 +0200
parents e1f45fcddb49
children 5134cd2f25ed
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1 /*
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2 * Copyright (c) 2009, 2012, 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.max.cri.ri;
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24
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25 import java.lang.reflect.*;
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26
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27 import com.oracle.max.cri.ci.*;
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29 /**
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30 * Encapsulates the main functionality of the runtime for the compiler, including access
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31 * to constant pools, OSR frames, inlining requirements, and runtime calls such as checkcast.
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32 s */
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33 public interface RiRuntime {
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34
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35 /**
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36 * Get the size in bytes for locking information on the stack.
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37 */
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38 int sizeOfLockData();
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40 /**
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41 * Returns a disassembly of the given installed code.
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42 *
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43 * @param code the code that should be disassembled
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44 * @return a disassembly. This will be of length 0 if the runtime does not support disassembling.
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45 */
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46 String disassemble(RiCodeInfo code);
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47
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48 /**
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49 * Returns the disassembly of the given method in a {@code javap}-like format.
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50 *
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51 * @param method the method that should be disassembled
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52 * @return the disassembly. This will be of length 0 if the runtime does not support disassembling.
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53 */
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54 String disassemble(RiResolvedMethod method);
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56 /**
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57 * Returns the RiType object representing the base type for the given kind.
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58 */
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59 RiResolvedType asRiType(CiKind kind);
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60
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61 /**
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62 * Returns the type of the given constant object.
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63 *
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64 * @return {@code null} if {@code constant.isNull() || !constant.kind.isObject()}
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65 */
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66 RiResolvedType getTypeOf(CiConstant constant);
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68
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69 RiResolvedType getType(Class<?> clazz);
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70
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71 /**
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72 * Used by the canonicalizer to compare objects, since a given runtime might not want to expose the real objects to the compiler.
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73 *
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74 * @return true if the two parameters represent the same runtime object, false otherwise
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75 */
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76 boolean areConstantObjectsEqual(CiConstant x, CiConstant y);
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77
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78 /**
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79 * Gets the register configuration to use when compiling a given method.
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80 *
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81 * @param method the top level method of a compilation
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82 */
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83 RiRegisterConfig getRegisterConfig(RiMethod method);
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84
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85 RiRegisterConfig getGlobalStubRegisterConfig();
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86
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87 /**
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88 * Custom area on the stack of each compiled method that the VM can use for its own purposes.
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89 * @return the size of the custom area in bytes
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90 */
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91 int getCustomStackAreaSize();
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93 /**
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94 * Minimum size of the stack area reserved for outgoing parameters. This area is reserved in all cases, even when
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95 * the compiled method has no regular call instructions.
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96 * @return the minimum size of the outgoing parameter area in bytes
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97 */
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98 int getMinimumOutgoingSize();
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99
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100 /**
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101 * Gets the length of the array that is wrapped in a CiConstant object.
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102 */
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103 int getArrayLength(CiConstant array);
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104
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105 /**
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106 * Performs any runtime-specific conversion on the object used to describe the target of a call.
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107 */
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108 Object asCallTarget(Object target);
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109
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110 /**
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111 * Returns the maximum absolute offset of a runtime call target from any position in the code cache or -1
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112 * when not known or not applicable. Intended for determining the required size of address/offset fields.
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113 */
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114 long getMaxCallTargetOffset(CiRuntimeCall rtcall);
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115
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116 /**
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117 * Provides the {@link RiMethod} for a {@link Method} obtained via reflection.
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118 */
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119 RiResolvedMethod getRiMethod(Method reflectionMethod);
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120
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121 /**
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122 * Installs some given machine code as the implementation of a given method.
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123 *
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124 * @param method a method whose executable code is being modified
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125 * @param code the code to be executed when {@code method} is called
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126 * @param info the object into which details of the installed code will be written.
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127 * Ignored if null, otherwise the info is written to index 0 of this array.
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128 */
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129 void installMethod(RiResolvedMethod method, CiTargetMethod code, RiCodeInfo[] info);
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131 /**
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132 * Adds the given machine code as an implementation of the given method without making it the default implementation.
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133 * @param method a method to which the executable code is begin added
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134 * @param code the code to be added
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135 * @param info the object into which details of the installed code will be written.
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136 * Ignored if null, otherwise the info is written to index 0 of this array.
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137 * @return a reference to the compiled and ready-to-run code
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138 */
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139 RiCompiledMethod addMethod(RiResolvedMethod method, CiTargetMethod code, RiCodeInfo[] info);
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140
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141 /**
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142 * Encodes a deoptimization action and a deoptimization reason in an integer value.
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143 * @return the encoded value as an integer
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144 */
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145 int encodeDeoptActionAndReason(RiDeoptAction action, RiDeoptReason reason);
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146
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147 /**
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148 * Converts a RiDeoptReason into an integer value.
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149 * @return An integer value representing the given RiDeoptReason.
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150 */
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151 int convertDeoptReason(RiDeoptReason reason);
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152
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153 /**
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154 * Converts a RiDeoptAction into an integer value.
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155 * @return An integer value representing the given RiDeoptAction.
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156 */
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157 int convertDeoptAction(RiDeoptAction action);
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158 }