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annotate graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotRegisterConfig.java @ 7364:1489cd4eabe7

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added support for making calls with the native/C ABI
author Doug Simon <doug.simon@oracle.com>
date Mon, 14 Jan 2013 14:06:37 +0100
parents 2912b72d840a
children 4cc0efe5cffe
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1 /*
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2 * Copyright (c) 2011, 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.graal.hotspot.amd64;
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24
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25 import static com.oracle.graal.amd64.AMD64.*;
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26
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27 import java.util.*;
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28
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29 import com.oracle.graal.amd64.*;
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30 import com.oracle.graal.api.code.*;
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31 import com.oracle.graal.api.code.CallingConvention.Type;
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32 import com.oracle.graal.api.code.Register.RegisterFlag;
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33 import com.oracle.graal.api.meta.*;
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34 import com.oracle.graal.graph.*;
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35 import com.oracle.graal.hotspot.*;
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36
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37 public class AMD64HotSpotRegisterConfig implements RegisterConfig {
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38
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39 // be careful - the contents of this array are duplicated in graal_CodeInstaller.cpp
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40 private final Register[] allocatable = {
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41 rax, rbx, rcx, rdx, rsi, rdi, r8, r9, /* r10, */r11, r12, r13, r14, /*r15*/
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42 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7,
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43 xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15
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44 };
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45
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46 private final EnumMap<RegisterFlag, Register[]> categorized = Register.categorize(allocatable);
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47
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48 private final RegisterAttributes[] attributesMap;
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49
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50 @Override
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51 public Register[] getAllocatableRegisters() {
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52 return allocatable;
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53 }
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54
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55 @Override
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56 public EnumMap<RegisterFlag, Register[]> getCategorizedAllocatableRegisters() {
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57 return categorized;
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58 }
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59
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60 @Override
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61 public RegisterAttributes[] getAttributesMap() {
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62 return attributesMap;
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63 }
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64
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65 private final Register[] javaGeneralParameterRegisters;
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66 private final Register[] nativeGeneralParameterRegisters;
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67 private final Register[] xmmParameterRegisters = {xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7};
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68
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69 private final CalleeSaveLayout csl;
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70
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71 public AMD64HotSpotRegisterConfig(HotSpotVMConfig config, boolean globalStubConfig) {
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72 if (config.windowsOs) {
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73 javaGeneralParameterRegisters = new Register[] {rdx, r8, r9, rdi, rsi, rcx};
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74 nativeGeneralParameterRegisters = new Register[] {rcx, rdx, r8, r9};
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75 } else {
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76 javaGeneralParameterRegisters = new Register[] {rsi, rdx, rcx, r8, r9, rdi};
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77 nativeGeneralParameterRegisters = new Register[] {rdi, rsi, rdx, rcx, r8, r9};
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78 }
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79
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80 if (globalStubConfig) {
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81 Register[] regs = {
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82 rax, rcx, rdx, rbx, rsp, rbp, rsi, rdi,
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83 r8, r9, r10, r11, r12, r13, r14, r15,
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84 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7,
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85 xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15
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86 };
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87 csl = new CalleeSaveLayout(0, -1, 8, regs);
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88 } else {
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89 // We reserve space for saving RBP but don't explicitly specify
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90 // it as a callee save register since we explicitly do the saving
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91 // with push and pop in HotSpotFrameContext
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92 final int size = 8;
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93 final Register[] regs = {};
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94 csl = new CalleeSaveLayout(0, size, 8, regs);
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95 }
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96
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97 attributesMap = RegisterAttributes.createMap(this, AMD64.allRegisters);
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98 }
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99
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100 @Override
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101 public Register[] getCallerSaveRegisters() {
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102 return getAllocatableRegisters();
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103 }
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104
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105 @Override
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106 public Register getRegisterForRole(int index) {
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107 throw new UnsupportedOperationException();
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108 }
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109
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110 @Override
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111 public CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, TargetDescription target, boolean stackOnly) {
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112 if (type == Type.NativeCall) {
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113 return callingConvention(nativeGeneralParameterRegisters, returnType, parameterTypes, type, target, stackOnly);
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114 }
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115 return callingConvention(javaGeneralParameterRegisters, returnType, parameterTypes, type, target, stackOnly);
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116 }
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117
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118 public Register[] getCallingConventionRegisters(Type type, RegisterFlag flag) {
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119 if (flag == RegisterFlag.FPU) {
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120 return xmmParameterRegisters;
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121 }
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122 return type == Type.NativeCall ? nativeGeneralParameterRegisters : javaGeneralParameterRegisters;
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123 }
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124
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125 private CallingConvention callingConvention(Register[] generalParameterRegisters, JavaType returnType, JavaType[] parameterTypes, Type type, TargetDescription target, boolean stackOnly) {
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126 Value[] locations = new Value[parameterTypes.length];
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127
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128 int currentGeneral = 0;
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129 int currentXMM = 0;
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130 int currentStackOffset = 0;
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131
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132 for (int i = 0; i < parameterTypes.length; i++) {
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133 final Kind kind = parameterTypes[i].getKind();
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134
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135 switch (kind) {
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136 case Byte:
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137 case Boolean:
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138 case Short:
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139 case Char:
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140 case Int:
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141 case Long:
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142 case Object:
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143 if (!stackOnly && currentGeneral < generalParameterRegisters.length) {
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144 Register register = generalParameterRegisters[currentGeneral++];
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145 locations[i] = register.asValue(kind);
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146 }
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147 break;
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148 case Float:
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149 case Double:
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150 if (!stackOnly && currentXMM < xmmParameterRegisters.length) {
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151 Register register = xmmParameterRegisters[currentXMM++];
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152 locations[i] = register.asValue(kind);
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153 }
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154 break;
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155 default:
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dcc8f5c6f394 Refactorings to prepare for LIR project splitting
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156 throw GraalInternalError.shouldNotReachHere();
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157 }
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158
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159 if (locations[i] == null) {
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160 locations[i] = StackSlot.get(kind.getStackKind(), currentStackOffset, !type.out);
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161 currentStackOffset += Math.max(target.sizeInBytes(kind), target.wordSize);
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162 }
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163 }
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164
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165 Kind returnKind = returnType == null ? Kind.Void : returnType.getKind();
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166 Value returnLocation = returnKind == Kind.Void ? Value.ILLEGAL : getReturnRegister(returnKind).asValue(returnKind);
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167 return new CallingConvention(currentStackOffset, returnLocation, locations);
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168 }
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169
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170 @Override
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171 public Register getReturnRegister(Kind kind) {
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172 switch (kind) {
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173 case Boolean:
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174 case Byte:
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175 case Char:
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176 case Short:
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177 case Int:
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178 case Long:
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179 case Object:
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180 return rax;
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181 case Float:
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182 case Double:
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183 return xmm0;
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184 case Void:
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185 case Illegal:
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186 return null;
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187 default:
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188 throw new UnsupportedOperationException("no return register for type " + kind);
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189 }
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190 }
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191
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192 @Override
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193 public Register getScratchRegister() {
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194 return r10;
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195 }
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196
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197 @Override
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198 public Register getFrameRegister() {
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199 return rsp;
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200 }
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201
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202 public CalleeSaveLayout getCalleeSaveLayout() {
5233
efbb1e33e2f3 removed XIR prologue and epilogues - architecture and runtime specific subclass of Backend is now used instead
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203 return csl;
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204 }
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205
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206 @Override
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207 public String toString() {
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208 String res = String.format(
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209 "Allocatable: " + Arrays.toString(getAllocatableRegisters()) + "%n" +
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210 "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n" +
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211 "CalleeSave: " + getCalleeSaveLayout() + "%n" +
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212 "Scratch: " + getScratchRegister() + "%n");
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213 return res;
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214 }
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215 }