Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/target/amd64/AMD64GlobalStubEmitter.java @ 2838:adc4b3ec0a8c
Deleted LIR critical edge splitter and replaced with GraalIR edge splitter using Anchor nodes (=> simpler).
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Tue, 31 May 2011 15:17:55 +0200 |
parents | a2f62de90c76 |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2009, 2011, 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.sun.c1x.target.amd64; |
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24 |
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25 import static com.sun.cri.ci.CiCallingConvention.Type.*; |
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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.max.asm.*; |
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30 import com.oracle.max.asm.target.amd64.*; |
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31 import com.oracle.max.asm.target.amd64.AMD64Assembler.*; |
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32 import com.sun.c1x.*; |
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33 import com.sun.c1x.asm.*; |
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34 import com.sun.c1x.globalstub.*; |
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35 import com.sun.cri.ci.*; |
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36 import com.sun.cri.ci.CiRegister.*; |
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37 import com.sun.cri.ri.*; |
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38 import com.sun.cri.xir.*; |
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39 import com.sun.cri.xir.CiXirAssembler.*; |
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40 |
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41 public class AMD64GlobalStubEmitter implements GlobalStubEmitter { |
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42 |
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43 public static final int ARGUMENT_SIZE = 8; |
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44 |
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45 private static final long FloatSignFlip = 0x8000000080000000L; |
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46 private static final long DoubleSignFlip = 0x8000000000000000L; |
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47 private static final CiRegister convertArgument = AMD64.xmm0; |
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48 private static final CiRegister convertResult = AMD64.rax; |
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49 private static final CiRegister negateArgument = AMD64.xmm0; |
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50 private static final CiRegister negateTemp = AMD64.xmm1; |
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51 |
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52 private TargetMethodAssembler tasm; |
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53 private AMD64MacroAssembler asm; |
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54 private final CiTarget target; |
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55 private int argsSize; |
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56 private int[] argOffsets; |
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57 private int resultOffset; |
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58 private int saveSize; |
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59 private int registerRestoreEpilogueOffset; |
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60 |
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61 private RiRuntime runtime; |
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62 private C1XCompiler compiler; |
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63 private CiRegister[] registersSaved; |
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64 |
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65 private boolean savedAllRegisters; |
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66 |
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67 public AMD64GlobalStubEmitter(C1XCompiler compiler) { |
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68 this.compiler = compiler; |
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69 this.target = compiler.target; |
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70 this.runtime = compiler.runtime; |
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71 } |
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72 |
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73 private void reset(CiKind resultKind, CiKind[] argTypes) { |
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74 asm = new AMD64MacroAssembler(compiler.target, compiler.globalStubRegisterConfig); |
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75 tasm = new TargetMethodAssembler(asm); |
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76 saveSize = 0; |
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77 argsSize = 0; |
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78 argOffsets = new int[argTypes.length]; |
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79 resultOffset = 0; |
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80 registerRestoreEpilogueOffset = -1; |
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81 registersSaved = null; |
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82 |
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83 for (int i = 0; i < argTypes.length; i++) { |
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84 argOffsets[i] = argsSize; |
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85 argsSize += ARGUMENT_SIZE; |
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86 } |
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87 |
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88 if (resultKind != CiKind.Void) { |
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89 if (argsSize == 0) { |
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90 argsSize = ARGUMENT_SIZE; |
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91 } |
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92 resultOffset = 0; |
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93 } |
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94 } |
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95 |
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96 public GlobalStub emit(CiRuntimeCall runtimeCall, RiRuntime runtime) { |
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97 reset(runtimeCall.resultKind, runtimeCall.arguments); |
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98 emitStandardForward(null, runtimeCall); |
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99 String name = "stub-" + runtimeCall; |
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100 CiTargetMethod targetMethod = tasm.finishTargetMethod(name, runtime, registerRestoreEpilogueOffset, true); |
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101 Object stubObject = runtime.registerGlobalStub(targetMethod, name); |
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102 return new GlobalStub(null, runtimeCall.resultKind, stubObject, argsSize, argOffsets, resultOffset); |
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103 } |
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104 |
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105 public GlobalStub emit(GlobalStub.Id stub, RiRuntime runtime) { |
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106 reset(stub.resultKind, stub.arguments); |
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107 |
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108 switch (stub) { |
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109 case f2i: |
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110 emitF2I(); |
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111 break; |
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112 case f2l: |
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113 emitF2L(); |
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114 break; |
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115 case d2i: |
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116 emitD2I(); |
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117 break; |
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118 case d2l: |
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119 emitD2L(); |
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120 break; |
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121 case fneg: |
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122 emitFNEG(); |
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123 break; |
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124 case dneg: |
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125 emitDNEG(); |
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126 break; |
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127 } |
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128 |
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129 String name = "stub-" + stub; |
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130 CiTargetMethod targetMethod = tasm.finishTargetMethod(name, runtime, registerRestoreEpilogueOffset, true); |
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131 Object stubObject = runtime.registerGlobalStub(targetMethod, name); |
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132 return new GlobalStub(stub, stub.resultKind, stubObject, argsSize, argOffsets, resultOffset); |
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133 } |
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134 |
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135 private CiValue allocateParameterOperand(XirParameter param, int parameterIndex) { |
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136 return new CiAddress(param.kind, AMD64.RSP, argumentIndexToStackOffset(parameterIndex)); |
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137 } |
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138 |
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139 private CiValue allocateResultOperand(XirOperand result) { |
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140 return new CiAddress(result.kind, AMD64.RSP, argumentIndexToStackOffset(0)); |
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141 } |
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142 |
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143 private CiValue allocateOperand(XirTemp temp, ArrayList<CiRegister> allocatableRegisters) { |
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144 if (temp instanceof XirRegister) { |
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145 XirRegister fixed = (XirRegister) temp; |
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146 return fixed.register; |
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147 } |
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148 |
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149 return newRegister(temp.kind, allocatableRegisters); |
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150 } |
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151 |
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152 private CiValue newRegister(CiKind kind, ArrayList<CiRegister> allocatableRegisters) { |
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153 assert kind != CiKind.Float && kind != CiKind.Double; |
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154 assert allocatableRegisters.size() > 0; |
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155 return allocatableRegisters.remove(allocatableRegisters.size() - 1).asValue(kind); |
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156 } |
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157 |
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158 public GlobalStub emit(XirTemplate template, RiRuntime runtime) { |
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159 C1XCompilation compilation = new C1XCompilation(compiler, null, -1, null); |
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160 try { |
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161 return emit(template, compilation); |
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162 } finally { |
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163 compilation.close(); |
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164 } |
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165 } |
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166 |
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167 public GlobalStub emit(XirTemplate template, C1XCompilation compilation) { |
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168 reset(template.resultOperand.kind, getArgumentKinds(template)); |
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169 compilation.initFrameMap(0); |
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170 compilation.frameMap().setFrameSize(frameSize()); |
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171 AMD64LIRAssembler assembler = new AMD64LIRAssembler(compilation); |
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172 asm = assembler.masm; |
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173 tasm = assembler.tasm; |
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174 |
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175 ArrayList<CiRegister> allocatableRegisters = new ArrayList<CiRegister>(Arrays.asList(compiler.globalStubRegisterConfig.getCategorizedAllocatableRegisters().get(RegisterFlag.CPU))); |
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176 for (XirTemp t : template.temps) { |
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177 if (t instanceof XirRegister) { |
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178 final XirRegister fixed = (XirRegister) t; |
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179 if (fixed.register.isRegister()) { |
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180 allocatableRegisters.remove(fixed.register.asRegister()); |
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181 } |
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182 } |
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183 } |
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184 |
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185 completeSavePrologue(); |
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186 |
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187 CiValue[] operands = new CiValue[template.variableCount]; |
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188 |
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189 XirOperand resultOperand = template.resultOperand; |
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190 |
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191 if (template.allocateResultOperand) { |
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192 CiValue outputOperand = CiValue.IllegalValue; |
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193 // This snippet has a result that must be separately allocated |
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194 // Otherwise it is assumed that the result is part of the inputs |
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195 if (resultOperand.kind != CiKind.Void && resultOperand.kind != CiKind.Illegal) { |
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196 outputOperand = allocateResultOperand(resultOperand); |
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197 assert operands[resultOperand.index] == null; |
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198 } |
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199 operands[resultOperand.index] = outputOperand; |
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200 } |
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201 |
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202 for (XirParameter param : template.parameters) { |
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203 assert !(param instanceof XirConstantOperand) : "constant parameters not supported for stubs"; |
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204 CiValue op = allocateParameterOperand(param, param.parameterIndex); |
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205 assert operands[param.index] == null; |
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206 |
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207 // Is the value destroyed? |
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208 if (template.isParameterDestroyed(param.parameterIndex)) { |
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209 CiValue newOp = newRegister(op.kind, allocatableRegisters); |
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210 assembler.moveOp(op, newOp, op.kind, null, false); |
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211 operands[param.index] = newOp; |
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212 } else { |
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213 operands[param.index] = op; |
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214 } |
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215 } |
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216 |
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217 for (XirConstant c : template.constants) { |
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218 assert operands[c.index] == null; |
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219 operands[c.index] = c.value; |
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220 } |
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221 |
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222 for (XirTemp t : template.temps) { |
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223 CiValue op = allocateOperand(t, allocatableRegisters); |
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224 assert operands[t.index] == null; |
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225 operands[t.index] = op; |
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226 } |
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227 |
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228 for (CiValue operand : operands) { |
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229 assert operand != null; |
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230 } |
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231 |
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232 Label[] labels = new Label[template.labels.length]; |
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233 for (int i = 0; i < labels.length; i++) { |
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234 labels[i] = new Label(); |
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235 } |
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236 |
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237 assert template.marks.length == 0 : "marks not supported in global stubs"; |
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238 assembler.emitXirInstructions(null, template.fastPath, labels, operands, null); |
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239 epilogue(); |
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240 CiTargetMethod targetMethod = tasm.finishTargetMethod(template.name, runtime, registerRestoreEpilogueOffset, true); |
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241 Object stubObject = runtime.registerGlobalStub(targetMethod, template.name); |
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242 return new GlobalStub(null, template.resultOperand.kind, stubObject, argsSize, argOffsets, resultOffset); |
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243 } |
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244 |
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245 private CiKind[] getArgumentKinds(XirTemplate template) { |
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246 CiXirAssembler.XirParameter[] params = template.parameters; |
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247 CiKind[] result = new CiKind[params.length]; |
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248 for (int i = 0; i < params.length; i++) { |
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249 result[i] = params[i].kind; |
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250 } |
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251 return result; |
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252 } |
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253 |
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254 private void negatePrologue() { |
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255 partialSavePrologue(negateArgument, negateTemp); |
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256 loadArgument(0, negateArgument); |
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257 } |
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258 |
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259 private void negateEpilogue() { |
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260 storeArgument(0, negateArgument); |
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261 epilogue(); |
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262 } |
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263 |
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264 private void emitDNEG() { |
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265 negatePrologue(); |
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266 asm.movsd(negateTemp, tasm.recordDataReferenceInCode(CiConstant.forLong(DoubleSignFlip))); |
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267 asm.xorpd(negateArgument, negateTemp); |
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268 negateEpilogue(); |
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269 } |
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270 |
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271 private void emitFNEG() { |
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272 negatePrologue(); |
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273 asm.movsd(negateTemp, tasm.recordDataReferenceInCode(CiConstant.forLong(FloatSignFlip))); |
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274 asm.xorps(negateArgument, negateTemp); |
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275 negateEpilogue(); |
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276 } |
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277 |
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278 private void convertPrologue() { |
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279 partialSavePrologue(convertArgument, convertResult); |
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280 loadArgument(0, convertArgument); |
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281 } |
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282 |
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283 private void convertEpilogue() { |
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284 storeArgument(0, convertResult); |
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285 epilogue(); |
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286 } |
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287 |
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288 private void emitD2L() { |
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289 emitCOMISSD(true, false); |
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290 } |
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291 |
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292 private void emitD2I() { |
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293 emitCOMISSD(true, true); |
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294 } |
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295 |
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296 private void emitF2L() { |
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297 emitCOMISSD(false, false); |
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298 } |
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299 |
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300 private void emitF2I() { |
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301 emitCOMISSD(false, true); |
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302 } |
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303 |
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304 private void emitCOMISSD(boolean isDouble, boolean isInt) { |
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305 convertPrologue(); |
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306 if (isDouble) { |
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307 asm.ucomisd(convertArgument, tasm.recordDataReferenceInCode(CiConstant.DOUBLE_0)); |
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308 } else { |
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309 asm.ucomiss(convertArgument, tasm.recordDataReferenceInCode(CiConstant.FLOAT_0)); |
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310 } |
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311 Label nan = new Label(); |
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312 Label ret = new Label(); |
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313 asm.jccb(ConditionFlag.parity, nan); |
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314 asm.jccb(ConditionFlag.below, ret); |
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315 |
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316 // input is > 0 -> return maxInt |
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317 // result register already contains 0x80000000, so subtracting 1 gives 0x7fffffff |
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318 asm.decrementl(convertResult, 1); |
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319 asm.jmpb(ret); |
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320 |
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321 // input is NaN -> return 0 |
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322 asm.bind(nan); |
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323 asm.xorptr(convertResult, convertResult); |
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324 |
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325 asm.bind(ret); |
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326 convertEpilogue(); |
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327 } |
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328 |
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329 private void emitStandardForward(GlobalStub.Id stub, CiRuntimeCall call) { |
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330 if (stub != null) { |
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331 assert stub.resultKind == call.resultKind; |
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332 assert stub.arguments.length == call.arguments.length; |
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333 for (int i = 0; i < stub.arguments.length; i++) { |
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334 assert stub.arguments[i] == call.arguments[i]; |
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335 } |
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336 } |
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337 |
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338 completeSavePrologue(); |
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339 forwardRuntimeCall(call); |
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340 epilogue(); |
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341 } |
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342 |
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343 private int argumentIndexToStackOffset(int index) { |
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344 // <-- lower addresses |
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345 // | stub frame | caller frame | |
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346 // | locals,savearea,retaddr | args ..... | |
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347 return frameSize() + (index + 1) * ARGUMENT_SIZE; |
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348 } |
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349 |
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350 private void loadArgument(int index, CiRegister register) { |
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351 asm.movq(register, new CiAddress(CiKind.Word, AMD64.RSP, argumentIndexToStackOffset(index))); |
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352 } |
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353 |
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354 private void storeArgument(int index, CiRegister register) { |
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355 asm.movq(new CiAddress(CiKind.Word, AMD64.RSP, argumentIndexToStackOffset(index)), register); |
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356 } |
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357 |
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358 private void partialSavePrologue(CiRegister... registersToSave) { |
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359 this.registersSaved = registersToSave; |
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360 this.saveSize = registersToSave.length * target.wordSize; |
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361 |
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362 // align to code size |
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363 int entryCodeOffset = runtime.codeOffset(); |
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364 if (entryCodeOffset != 0) { |
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365 asm.nop(entryCodeOffset); |
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366 } |
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367 asm.subq(AMD64.rsp, frameSize()); |
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368 |
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369 int index = 0; |
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370 for (CiRegister r : registersToSave) { |
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371 asm.movq(new CiAddress(CiKind.Word, AMD64.RSP, index * target.arch.wordSize), r); |
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372 index++; |
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373 } |
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374 |
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375 tasm.setFrameSize(frameSize()); |
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376 this.savedAllRegisters = false; |
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377 } |
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378 |
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379 private void completeSavePrologue() { |
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380 CiCalleeSaveArea csa = compiler.globalStubRegisterConfig.getCalleeSaveArea(); |
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381 this.saveSize = csa.size; |
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382 int entryCodeOffset = runtime.codeOffset(); |
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383 if (entryCodeOffset != 0) { |
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384 // align to code size |
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385 asm.nop(entryCodeOffset); |
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386 } |
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387 asm.subq(AMD64.rsp, frameSize()); |
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388 tasm.setFrameSize(frameSize()); |
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389 int frameToCSA = 0; |
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390 asm.save(csa, frameToCSA); |
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391 this.savedAllRegisters = true; |
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392 } |
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393 |
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394 private void epilogue() { |
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395 assert registerRestoreEpilogueOffset == -1; |
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396 registerRestoreEpilogueOffset = asm.codeBuffer.position(); |
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397 |
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398 if (savedAllRegisters) { |
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399 CiCalleeSaveArea csa = compiler.globalStubRegisterConfig.getCalleeSaveArea(); |
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400 int frameToCSA = 0; |
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401 asm.restore(csa, frameToCSA); |
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402 } else { |
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403 // saved only select registers |
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404 for (int index = 0; index < registersSaved.length; index++) { |
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405 CiRegister r = registersSaved[index]; |
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406 asm.movq(r, new CiAddress(CiKind.Word, AMD64.RSP, index * target.wordSize)); |
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407 } |
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408 registersSaved = null; |
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409 } |
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410 |
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411 // Restore rsp |
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412 asm.addq(AMD64.rsp, frameSize()); |
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413 asm.ret(0); |
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414 } |
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415 |
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416 private int frameSize() { |
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417 return target.alignFrameSize(saveSize); |
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418 } |
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419 |
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420 private void forwardRuntimeCall(CiRuntimeCall call) { |
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421 // Load arguments |
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422 CiCallingConvention cc = compiler.globalStubRegisterConfig.getCallingConvention(RuntimeCall, call.arguments, target); |
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423 for (int i = 0; i < cc.locations.length; ++i) { |
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424 CiValue location = cc.locations[i]; |
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425 loadArgument(i, location.asRegister()); |
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426 } |
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427 |
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428 // Call to the runtime |
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429 int before = asm.codeBuffer.position(); |
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430 asm.call(); |
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431 int after = asm.codeBuffer.position(); |
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432 tasm.recordDirectCall(before, after, call, null); |
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433 |
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434 if (call.resultKind != CiKind.Void) { |
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435 CiRegister returnRegister = compiler.globalStubRegisterConfig.getReturnRegister(call.resultKind); |
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436 this.storeArgument(0, returnRegister); |
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437 } |
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438 } |
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439 } |