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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotRegisterConfig.java @ 1423:760213a60e8b

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* rewrite of the code installation * partial support for safepoints * macro-based CiTargetMethod interface * code stub support
author Lukas Stadler <lukas.stadler@oracle.com>
date Mon, 16 Aug 2010 18:59:36 -0700
parents 3483ec571caf
children 98fffb304868
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1 /*
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2 * Copyright (c) 2009-2010 Sun Microsystems, Inc. All rights reserved.
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3 *
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4 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product that is
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5 * described in this document. In particular, and without limitation, these intellectual property rights may include one
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6 * or more of the U.S. patents listed at http://www.sun.com/patents and one or more additional patents or pending patent
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7 * applications in the U.S. and in other countries.
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8 *
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9 * U.S. Government Rights - Commercial software. Government users are subject to the Sun Microsystems, Inc. standard
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10 * license agreement and applicable provisions of the FAR and its supplements.
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11 *
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12 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or registered
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13 * trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks are used under license and
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14 * are trademarks or registered trademarks of SPARC International, Inc. in the U.S. and other countries.
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15 *
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16 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open Company, Ltd.
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17 */
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18 package com.sun.hotspot.c1x;
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19
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20 import com.sun.c1x.target.amd64.AMD64;
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21 import com.sun.c1x.util.Util;
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22 import com.sun.cri.ci.CiCallingConvention;
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23 import com.sun.cri.ci.CiKind;
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24 import com.sun.cri.ci.CiRegister;
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25 import com.sun.cri.ci.CiStackSlot;
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26 import com.sun.cri.ci.CiTarget;
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27 import com.sun.cri.ci.CiValue;
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28 import com.sun.cri.ri.RiRegisterConfig;
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29
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30 /**
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31 * @author Thomas Wuerthinger
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32 *
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33 */
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34 public class HotSpotRegisterConfig implements RiRegisterConfig {
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35
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36 @Override
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37 public CiRegister[] getAllocatableRegisters() {
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38 return new CiRegister[] { AMD64.rax, AMD64.rbx, AMD64.rcx, AMD64.rdx, AMD64.rsi, AMD64.rdi, /*AMD64.r10, */AMD64.r11, AMD64.xmm0, AMD64.xmm1, AMD64.xmm2, AMD64.xmm3, AMD64.xmm4, AMD64.xmm5,
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39 AMD64.xmm6, AMD64.xmm7, AMD64.xmm8, AMD64.xmm9, AMD64.xmm10, AMD64.xmm11, AMD64.xmm12, AMD64.xmm13, AMD64.xmm14, AMD64.xmm15};
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40 }
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41
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42 private final CiRegister[] generalParameterRegisters;
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43 private final CiRegister[] xmmParameterRegisters = new CiRegister[] { AMD64.xmm0, AMD64.xmm1, AMD64.xmm2, AMD64.xmm3, AMD64.xmm4, AMD64.xmm5, AMD64.xmm6, AMD64.xmm7};
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44
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45 public HotSpotRegisterConfig(HotSpotVMConfig config) {
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46 if (config.windowsOs) {
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47 generalParameterRegisters = new CiRegister[] { AMD64.rdx, AMD64.r8, AMD64.r9, AMD64.rdi, AMD64.rsi, AMD64.rcx};
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48 } else {
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49 generalParameterRegisters = new CiRegister[] { AMD64.rsi, AMD64.rdx, AMD64.rcx, AMD64.r8, AMD64.r9, AMD64.rdi};
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50 }
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51 }
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52
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53 @Override
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54 public int getCalleeSaveRegisterOffset(CiRegister register) {
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55 return 0;
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56 }
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57
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58 @Override
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59 public CiRegister[] getCallerSaveRegisters() {
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60 return getAllocatableRegisters();
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61 }
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62
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63 @Override
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64 public CiRegister getFramePointerRegister() {
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65 return AMD64.rbp;
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66 }
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67
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68 @Override
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69 public CiRegister getIntegerRegister(int index) {
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70 throw new UnsupportedOperationException();
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71 }
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72
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73 @Override
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74 public CiCallingConvention getJavaCallingConvention(CiKind[] parameters, boolean outgoing, CiTarget target) {
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75 return callingConvention(parameters, outgoing, target);
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76 }
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77
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78 private CiCallingConvention callingConvention(CiKind[] types, boolean outgoing, CiTarget target) {
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79 CiValue[] locations = new CiValue[types.length];
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80
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81 int currentGeneral = 0;
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82 int currentXMM = 0;
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83 int currentStackIndex = 0;
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84
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85 for (int i = 0; i < types.length; i++) {
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86 final CiKind kind = types[i];
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87
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88 switch (kind) {
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89 case Byte:
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90 case Boolean:
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91 case Short:
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92 case Char:
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93 case Int:
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94 case Long:
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95 case Word:
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96 case Object:
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97 if (currentGeneral < generalParameterRegisters.length) {
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98 CiRegister register = generalParameterRegisters[currentGeneral++];
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99 locations[i] = register.asValue(kind);
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100 }
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101 break;
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102
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103 case Float:
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104 case Double:
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105 if (currentXMM < xmmParameterRegisters.length) {
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106 CiRegister register = xmmParameterRegisters[currentXMM++];
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107 locations[i] = register.asValue(kind);
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108 }
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109 break;
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110
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111 default:
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112 throw Util.shouldNotReachHere();
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113 }
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114
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115 if (locations[i] == null) {
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116 locations[i] = CiStackSlot.get(kind.stackKind(), currentStackIndex, !outgoing);
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117 currentStackIndex += target.spillSlots(kind);
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118 }
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119 }
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120
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121 return new CiCallingConvention(locations, currentStackIndex * target.spillSlotSize);
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122 }
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123
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124 @Override
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125 public int getMinimumCalleeSaveFrameSize() {
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126 return 0;
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127 }
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128
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129 @Override
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130 public CiCallingConvention getNativeCallingConvention(CiKind[] parameters, boolean outgoing, CiTarget target) {
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131 throw new UnsupportedOperationException();
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132 }
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133
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134 @Override
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135 public CiRegister[] getRegisterReferenceMapOrder() {
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136 return getAllocatableRegisters();
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137 }
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138
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139 @Override
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140 public CiRegister getReturnRegister(CiKind kind) {
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141 switch (kind) {
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142 case Boolean:
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143 case Byte:
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144 case Char:
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145 case Short:
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146 case Int:
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147 case Long:
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148 case Object:
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149 return AMD64.rax;
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150 case Float:
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151 case Double:
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152 return AMD64.xmm0;
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153 case Void:
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154 case Illegal:
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155 return null;
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156 default:
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157 throw new UnsupportedOperationException("no return register for type " + kind);
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158 }
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159 }
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160
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161 @Override
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162 public CiCallingConvention getRuntimeCallingConvention(CiKind[] parameters, CiTarget target) {
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163 return callingConvention(parameters, true, target);
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164 }
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165
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166 @Override
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167 public CiRegister getScratchRegister() {
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168 return AMD64.r10;
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169 }
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170
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171 @Override
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172 public CiRegister getStackPointerRegister() {
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173 return AMD64.rsp;
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174 }
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175
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176 }