Mercurial > hg > graal-jvmci-8

annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotRegisterConfig.java @ 1420:44efca8a02d6

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author Lukas Stadler <lukas.stadler@oracle.com>
date Tue, 13 Jul 2010 11:47:55 -0700
parents 7bf6a77b9c5a
children 6223633ce7dd
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1 /*
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2 * Copyright (c) 2009 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};
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39 }
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40
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41 private final CiRegister[] generalParameterRegisters;
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42 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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43
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44 public HotSpotRegisterConfig(HotSpotVMConfig config) {
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45 if (config.isWindowsOs()) {
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46 generalParameterRegisters = new CiRegister[] { AMD64.rdx, AMD64.r8, AMD64.r9, AMD64.rdi, AMD64.rsi, AMD64.rcx};
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47 } else {
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48 generalParameterRegisters = new CiRegister[] { AMD64.rsi, AMD64.rdx, AMD64.rcx, AMD64.r8, AMD64.r9, AMD64.rdi};
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49 }
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50 }
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51
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52 @Override
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53 public int getCalleeSaveRegisterOffset(CiRegister register) {
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54 return 0;
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55 }
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56
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57 @Override
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58 public CiRegister[] getCallerSaveRegisters() {
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59 return getAllocatableRegisters();
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60 }
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61
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62 @Override
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63 public CiRegister getFramePointerRegister() {
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64 return AMD64.rbp;
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65 }
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66
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67 @Override
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68 public CiRegister getIntegerRegister(int index) {
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69 throw new UnsupportedOperationException();
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70 }
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71
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72 @Override
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73 public CiCallingConvention getJavaCallingConvention(CiKind[] parameters, boolean outgoing, CiTarget target) {
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74 return callingConvention(parameters, outgoing, target);
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75 }
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76
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77 private CiCallingConvention callingConvention(CiKind[] types, boolean outgoing, CiTarget target) {
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78 CiValue[] locations = new CiValue[types.length];
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79
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80 int currentGeneral = 0;
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81 int currentXMM = 0;
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82 int currentStackIndex = 0;
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83
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84 for (int i = 0; i < types.length; i++) {
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85 final CiKind kind = types[i];
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86
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87 switch (kind) {
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88 case Byte:
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89 case Boolean:
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90 case Short:
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91 case Char:
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92 case Int:
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93 case Long:
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94 case Word:
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95 case Object:
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96 if (currentGeneral < generalParameterRegisters.length) {
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97 CiRegister register = generalParameterRegisters[currentGeneral++];
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98 locations[i] = register.asValue(kind);
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99 }
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100 break;
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101
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102 case Float:
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103 case Double:
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104 if (currentXMM < xmmParameterRegisters.length) {
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105 CiRegister register = xmmParameterRegisters[currentXMM++];
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106 locations[i] = register.asValue(kind);
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107 }
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108 break;
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109
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110 default:
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111 throw Util.shouldNotReachHere();
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112 }
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113
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114 if (locations[i] == null) {
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115 locations[i] = CiStackSlot.get(kind.stackKind(), currentStackIndex, !outgoing);
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116 currentStackIndex += target.spillSlots(kind);
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117 }
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118 }
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119
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120 return new CiCallingConvention(locations, currentStackIndex * target.spillSlotSize);
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121 }
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122
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123 @Override
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124 public int getMinimumCalleeSaveFrameSize() {
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125 return 0;
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126 }
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127
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128 @Override
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129 public CiCallingConvention getNativeCallingConvention(CiKind[] parameters, boolean outgoing, CiTarget target) {
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130 throw new UnsupportedOperationException();
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131 }
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132
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133 @Override
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134 public CiRegister[] getRegisterReferenceMapOrder() {
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135 return getAllocatableRegisters();
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136 }
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137
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138 @Override
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139 public CiRegister getReturnRegister(CiKind kind) {
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140 return AMD64.rax;
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141 }
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142
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143 @Override
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144 public CiCallingConvention getRuntimeCallingConvention(CiKind[] parameters, CiTarget target) {
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145 throw new UnsupportedOperationException();
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146 }
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147
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148 @Override
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149 public CiRegister getScratchRegister() {
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150 return AMD64.r15;
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151 }
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152
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153 @Override
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154 public CiRegister getStackPointerRegister() {
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155 return AMD64.rsp;
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156 }
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157
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158 }