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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/target/amd64/HotSpotAMD64Backend.java @ 5242:f46d82be6e19

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ExceptionObjectNode is now lowered without XIR
author Doug Simon <doug.simon@oracle.com>
date Fri, 13 Apr 2012 23:28:20 +0200
parents f9aae727d035
children 467de393651a
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1 /*
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2 * Copyright (c) 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.target.amd64;
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24
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25 import static com.oracle.graal.hotspot.ri.HotSpotXirGenerator.*;
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26 import static com.oracle.max.asm.target.amd64.AMD64.*;
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27 import static com.oracle.max.cri.ci.CiCallingConvention.Type.*;
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28 import static com.oracle.max.cri.ci.CiValueUtil.*;
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29
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30 import java.lang.reflect.*;
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31
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32 import com.oracle.graal.compiler.*;
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33 import com.oracle.graal.compiler.gen.*;
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34 import com.oracle.graal.compiler.target.*;
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35 import com.oracle.graal.compiler.target.amd64.*;
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36 import com.oracle.graal.graph.*;
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37 import com.oracle.graal.hotspot.*;
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38 import com.oracle.graal.hotspot.ri.*;
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39 import com.oracle.graal.lir.*;
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40 import com.oracle.graal.lir.amd64.*;
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41 import com.oracle.graal.lir.asm.*;
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42 import com.oracle.graal.nodes.*;
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43 import com.oracle.graal.nodes.java.*;
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44 import com.oracle.max.asm.*;
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45 import com.oracle.max.asm.target.amd64.*;
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46 import com.oracle.max.asm.target.amd64.AMD64Assembler.ConditionFlag;
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47 import com.oracle.max.cri.ci.*;
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48 import com.oracle.max.cri.ci.CiCallingConvention.Type;
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49 import com.oracle.max.cri.ci.CiRegister.*;
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50 import com.oracle.max.cri.ri.*;
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51 import com.oracle.max.cri.xir.*;
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52
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53 public class HotSpotAMD64Backend extends Backend {
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54
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55 public HotSpotAMD64Backend(RiRuntime runtime, CiTarget target) {
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56 super(runtime, target);
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57 }
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58
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59 @Override
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60 public LIRGenerator newLIRGenerator(Graph graph, FrameMap frameMap, RiResolvedMethod method, LIR lir, RiXirGenerator xir) {
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61 return new AMD64LIRGenerator(graph, runtime, target, frameMap, method, lir, xir) {
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62 @Override
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63 public void visitLoopEnd(LoopEndNode x) {
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64 if (GraalOptions.GenLoopSafepoints && x.hasSafepointPolling()) {
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65 LIRDebugInfo info = state();
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66 if (!info.topFrame.method.noSafepointPolls()) {
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67 append(new AMD64SafepointOp(info, ((HotSpotRuntime) runtime).config));
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68 }
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69 }
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70 }
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71 @Override
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72 public void visitExceptionObject(ExceptionObjectNode x) {
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73 HotSpotVMConfig config = ((HotSpotRuntime) runtime).config;
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74 CiRegisterValue thread = r15.asValue();
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75 CiAddress exceptionAddress = new CiAddress(CiKind.Object, thread, config.threadExceptionOopOffset);
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76 CiAddress pcAddress = new CiAddress(CiKind.Long, thread, config.threadExceptionPcOffset);
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77 CiValue exception = emitLoad(exceptionAddress, false);
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78 emitStore(exceptionAddress, CiConstant.NULL_OBJECT, false);
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79 emitStore(pcAddress, CiConstant.LONG_0, false);
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80 setResult(x, exception);
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81 }
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82 };
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83 }
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84
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85 @Override
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86 public AMD64XirAssembler newXirAssembler() {
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87 return new AMD64XirAssembler(target);
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88 }
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89
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90 class HotSpotFrameContext implements FrameContext {
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91
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92 private final LIR lir;
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93 private boolean needsLeave;
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94
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95 public HotSpotFrameContext(LIR lir) {
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96 this.lir = lir;
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97 }
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98
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99 @Override
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100 public void enter(TargetMethodAssembler tasm) {
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101 FrameMap frameMap = tasm.frameMap;
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102 int frameSize = frameMap.frameSize();
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103 if (frameSize != 0) {
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104 AMD64MacroAssembler asm = (AMD64MacroAssembler) tasm.asm;
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105 emitStackOverflowCheck(tasm, lir, false);
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106 asm.push(rbp);
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107 asm.movq(rbp, rsp);
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108 asm.decrementq(rsp, frameSize - 8); // account for the push of RBP above
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109 if (GraalOptions.ZapStackOnMethodEntry) {
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110 final int intSize = 4;
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111 for (int i = 0; i < frameSize / intSize; ++i) {
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112 asm.movl(new CiAddress(CiKind.Int, rsp.asValue(), i * intSize), 0xC1C1C1C1);
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113 }
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114 }
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115 CiCalleeSaveLayout csl = frameMap.registerConfig.getCalleeSaveLayout();
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116 if (csl != null && csl.size != 0) {
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117 int frameToCSA = frameMap.offsetToCalleeSaveArea();
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118 assert frameToCSA >= 0;
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119 asm.save(csl, frameToCSA);
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120 }
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121 needsLeave = true;
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122 }
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123 }
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124
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125 @Override
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126 public void leave(TargetMethodAssembler tasm) {
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127 if (!needsLeave) {
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128 return;
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129 }
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130
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131 int frameSize = tasm.frameMap.frameSize();
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132 AMD64MacroAssembler asm = (AMD64MacroAssembler) tasm.asm;
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133 CiCalleeSaveLayout csl = tasm.frameMap.registerConfig.getCalleeSaveLayout();
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134 RiRegisterConfig regConfig = tasm.frameMap.registerConfig;
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135
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136 if (csl != null && csl.size != 0) {
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137 tasm.targetMethod.setRegisterRestoreEpilogueOffset(asm.codeBuffer.position());
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138 // saved all registers, restore all registers
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139 int frameToCSA = tasm.frameMap.offsetToCalleeSaveArea();
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140 asm.restore(csl, frameToCSA);
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141 }
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142
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143 asm.incrementq(rsp, frameSize - 8); // account for the pop of RBP below
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144 asm.pop(rbp);
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145
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146 if (GraalOptions.GenSafepoints) {
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147 HotSpotVMConfig config = ((HotSpotRuntime) runtime).config;
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148
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149 // If at the return point, then the frame has already been popped
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150 // so deoptimization cannot be performed here. The HotSpot runtime
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151 // detects this case - see the definition of frame::should_be_deoptimized()
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152
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153 CiRegister scratch = regConfig.getScratchRegister();
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154 if (config.isPollingPageFar) {
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155 asm.movq(scratch, config.safepointPollingAddress);
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156 tasm.recordMark(MARK_POLL_RETURN_FAR);
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157 asm.movq(scratch, new CiAddress(tasm.target.wordKind, scratch.asValue()));
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158 } else {
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159 tasm.recordMark(MARK_POLL_RETURN_NEAR);
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160 asm.movq(scratch, new CiAddress(tasm.target.wordKind, rip.asValue()));
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161 }
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162 }
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163 }
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164 }
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165
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166 @Override
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167 public TargetMethodAssembler newAssembler(FrameMap frameMap, LIR lir) {
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168 AbstractAssembler masm = new AMD64MacroAssembler(target, frameMap.registerConfig);
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169 HotSpotFrameContext frameContext = new HotSpotFrameContext(lir);
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170 TargetMethodAssembler tasm = new TargetMethodAssembler(target, runtime, frameMap, masm, frameContext);
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171 tasm.setFrameSize(frameMap.frameSize());
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172 tasm.targetMethod.setCustomStackAreaOffset(frameMap.offsetToCustomArea());
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173 return tasm;
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174 }
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175
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176 @Override
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177 public void emitCode(TargetMethodAssembler tasm, RiResolvedMethod method, LIR lir) {
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178 AMD64MacroAssembler asm = (AMD64MacroAssembler) tasm.asm;
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179 FrameMap frameMap = tasm.frameMap;
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180 RiRegisterConfig regConfig = frameMap.registerConfig;
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181 HotSpotVMConfig config = ((HotSpotRuntime) runtime).config;
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182 Label unverifiedStub = new Label();
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183
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184 // Emit the prefix
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185 tasm.recordMark(MARK_OSR_ENTRY);
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186 tasm.recordMark(MARK_UNVERIFIED_ENTRY);
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187
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188 boolean isStatic = Modifier.isStatic(method.accessFlags());
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189 if (!isStatic) {
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190 CiCallingConvention cc = regConfig.getCallingConvention(JavaCallee, new CiKind[] {CiKind.Object}, target, false);
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191 CiRegister inlineCacheKlass = rax; // see definition of IC_Klass in c1_LIRAssembler_x86.cpp
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192 CiRegister receiver = asRegister(cc.locations[0]);
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193 CiAddress src = new CiAddress(target.wordKind, receiver.asValue(), config.hubOffset);
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194
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195 asm.cmpq(inlineCacheKlass, src);
5233
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196 asm.jcc(ConditionFlag.notEqual, unverifiedStub);
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197 }
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198
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199 asm.align(config.codeEntryAlignment);
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200 tasm.recordMark(MARK_VERIFIED_ENTRY);
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201
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202 // Emit code for the LIR
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203 lir.emitCode(tasm);
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204
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205 // Emit the suffix (i.e. out-of-line stubs)
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206 CiRegister thread = r15;
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207 CiRegister exceptionOop = regConfig.getCallingConventionRegisters(Type.RuntimeCall, RegisterFlag.CPU)[0];
5233
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208 Label unwind = new Label();
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209 asm.bind(unwind);
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210 tasm.recordMark(MARK_UNWIND_ENTRY);
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211 CiAddress exceptionOopField = new CiAddress(CiKind.Object, thread.asValue(), config.threadExceptionOopOffset);
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212 CiAddress exceptionPcField = new CiAddress(CiKind.Object, thread.asValue(), config.threadExceptionPcOffset);
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213 asm.movq(exceptionOop, exceptionOopField);
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214 asm.movslq(exceptionOopField, 0);
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215 asm.movslq(exceptionPcField, 0);
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216
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217 AMD64Call.directCall(tasm, asm, config.unwindExceptionStub, null);
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218 AMD64Call.shouldNotReachHere(tasm, asm);
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219
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220 tasm.recordMark(MARK_EXCEPTION_HANDLER_ENTRY);
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221 AMD64Call.directCall(tasm, asm, config.handleExceptionStub, null);
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222 AMD64Call.shouldNotReachHere(tasm, asm);
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223
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224 tasm.recordMark(MARK_DEOPT_HANDLER_ENTRY);
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225 AMD64Call.directCall(tasm, asm, config.handleDeoptStub, null);
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226 AMD64Call.shouldNotReachHere(tasm, asm);
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227
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228 if (!isStatic) {
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229 asm.bind(unverifiedStub);
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230 AMD64Call.directJmp(tasm, asm, config.inlineCacheMissStub);
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231 }
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232
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233 for (int i = 0; i < GraalOptions.MethodEndBreakpointGuards; ++i) {
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234 asm.int3();
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235 }
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236 }
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237 }