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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotRegisterConfig.java @ 1418:55ac38887415

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modifications for linux: argument register layout, makefile
author Lukas Stadler <lukas.stadler@jku.at>
date Fri, 09 Jul 2010 16:33:03 -0700
parents 1b41af477605
children 7bf6a77b9c5a
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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
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5 * that is described in this document. In particular, and without limitation, these intellectual property
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6 * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or
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7 * more additional patents or pending patent 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
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10 * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its
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11 * supplements.
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12 *
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13 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or
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14 * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks
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15 * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the
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16 * U.S. and other countries.
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17 *
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18 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open
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19 * Company, Ltd.
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20 */
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21 package com.sun.hotspot.c1x;
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22
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23 import com.sun.c1x.target.amd64.AMD64;
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24 import com.sun.c1x.util.Util;
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25 import com.sun.cri.ci.CiCallingConvention;
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26 import com.sun.cri.ci.CiKind;
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27 import com.sun.cri.ci.CiRegister;
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28 import com.sun.cri.ci.CiStackSlot;
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29 import com.sun.cri.ci.CiTarget;
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30 import com.sun.cri.ci.CiValue;
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31 import com.sun.cri.ri.RiRegisterConfig;
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32
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33 /**
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34 * @author Thomas Wuerthinger
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35 *
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36 */
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37 public class HotSpotRegisterConfig implements RiRegisterConfig {
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38
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39 @Override
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40 public CiRegister[] getAllocatableRegisters() {
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41 return new CiRegister[]{ AMD64.rax, AMD64.rbx, AMD64.rcx, AMD64.rdx, AMD64.rsi, AMD64.rdi, AMD64.r10, AMD64.r11} ;
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42 }
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43
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44 private final CiRegister[] generalParameterRegisters;
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45 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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46
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47 public HotSpotRegisterConfig(boolean windowsRegisterLayout) {
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48 if(windowsRegisterLayout) {
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49 generalParameterRegisters = new CiRegister[]{AMD64.rdx, AMD64.r8, AMD64.r9, AMD64.rdi, AMD64.rsi, AMD64.rcx};
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50 } else {
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51 generalParameterRegisters = new CiRegister[]{AMD64.rsi, AMD64.rdx, AMD64.rcx, AMD64.r8, AMD64.r9, AMD64.rdi};
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52 }
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53 }
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54
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55 @Override
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56 public int getCalleeSaveRegisterOffset(CiRegister register) {
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57 return 0;
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58 }
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59
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60 @Override
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61 public CiRegister[] getCallerSaveRegisters() {
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62 return getAllocatableRegisters();
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63 }
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64
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65 @Override
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66 public CiRegister getFramePointerRegister() {
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67 return AMD64.rbp;
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68 }
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69
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70 @Override
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71 public CiRegister getIntegerRegister(int index) {
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72 throw new UnsupportedOperationException();
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73 }
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74
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75 @Override
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76 public CiCallingConvention getJavaCallingConvention(CiKind[] parameters, boolean outgoing, CiTarget target) {
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77 return callingConvention(parameters, outgoing, target);
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78 }
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79
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80 private CiCallingConvention callingConvention(CiKind[] types, boolean outgoing, CiTarget target) {
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81 CiValue[] locations = new CiValue[types.length];
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82
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83 int currentGeneral = 0;
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84 int currentXMM = 0;
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85 int currentStackIndex = 0;
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86
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87 for (int i = 0; i < types.length; i++) {
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88 final CiKind kind = types[i];
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89
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90 switch (kind) {
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91 case Byte:
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92 case Boolean:
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93 case Short:
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94 case Char:
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95 case Int:
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96 case Long:
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97 case Word:
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98 case Object:
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99 if (currentGeneral < generalParameterRegisters.length) {
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100 CiRegister register = generalParameterRegisters[currentGeneral++];
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101 locations[i] = register.asValue(kind);
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102 }
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103 break;
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104
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105 case Float:
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106 case Double:
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107 if (currentXMM < xmmParameterRegisters.length) {
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108 CiRegister register = xmmParameterRegisters[currentXMM++];
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109 locations[i] = register.asValue(kind);
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110 }
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111 break;
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112
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113 default:
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114 throw Util.shouldNotReachHere();
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115 }
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116
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117 if (locations[i] == null) {
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118 locations[i] = CiStackSlot.get(kind.stackKind(), currentStackIndex, !outgoing);
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119 currentStackIndex += target.spillSlots(kind);
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120 }
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121 }
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122
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123 return new CiCallingConvention(locations, currentStackIndex * target.spillSlotSize);
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124 }
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125
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126 @Override
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127 public int getMinimumCalleeSaveFrameSize() {
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128 return 0;
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129 }
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130
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131 @Override
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132 public CiCallingConvention getNativeCallingConvention(CiKind[] parameters, boolean outgoing, CiTarget target) {
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133 throw new UnsupportedOperationException();
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134 }
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135
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136 @Override
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137 public CiRegister[] getRegisterReferenceMapOrder() {
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138 return getAllocatableRegisters();
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139 }
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140
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141 @Override
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142 public CiRegister getReturnRegister(CiKind kind) {
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143 return AMD64.rax;
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144 }
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145
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146 @Override
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147 public CiCallingConvention getRuntimeCallingConvention(CiKind[] parameters, CiTarget target) {
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148 throw new UnsupportedOperationException();
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149 }
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150
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151 @Override
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152 public CiRegister getSafepointRegister() {
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153 return AMD64.r13;
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154 }
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155
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156 @Override
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157 public CiRegister getScratchRegister() {
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158 return AMD64.r15;
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159 }
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160
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161 @Override
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162 public CiRegister getStackPointerRegister() {
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163 return AMD64.rsp;
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164 }
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165
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166 @Override
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167 public CiRegister getThreadRegister() {
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168 return AMD64.r14;
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169 }
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170
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171 }