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annotate graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotBackend.java @ 14796:f5b3292b4ded

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Restrict access to members of LIRGenerator.
author Josef Eisl <josef.eisl@jku.at>
date Thu, 13 Mar 2014 13:28:09 +0100
parents 4eac66a9b87d
children 01afd501f127
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * Copyright (c) 2013, 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.sparc;
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24
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25 import java.util.*;
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26
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27 import sun.misc.*;
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28
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29 import com.oracle.graal.api.code.*;
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30 import com.oracle.graal.api.meta.*;
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31 import com.oracle.graal.asm.*;
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32 import com.oracle.graal.asm.sparc.*;
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33 import com.oracle.graal.asm.sparc.SPARCAssembler.*;
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34 import com.oracle.graal.compiler.gen.LIRGenerator;
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35 import com.oracle.graal.graph.*;
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36 import com.oracle.graal.hotspot.*;
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37 import com.oracle.graal.hotspot.bridge.*;
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38 import com.oracle.graal.hotspot.meta.*;
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39 import com.oracle.graal.hotspot.stubs.Stub;
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40 import com.oracle.graal.lir.*;
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41 import com.oracle.graal.lir.StandardOp.*;
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42 import com.oracle.graal.lir.asm.*;
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43 import com.oracle.graal.lir.sparc.*;
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44 import com.oracle.graal.nodes.*;
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45
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46 import static com.oracle.graal.sparc.SPARC.*;
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47 import static com.oracle.graal.asm.sparc.SPARCMacroAssembler.*;
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48 import static com.oracle.graal.api.code.CallingConvention.Type.*;
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49 import static com.oracle.graal.api.code.ValueUtil.*;
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50 import static com.oracle.graal.phases.GraalOptions.*;
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51 import static java.lang.reflect.Modifier.*;
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52
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53 /**
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54 * HotSpot SPARC specific backend.
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55 */
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56 public class SPARCHotSpotBackend extends HotSpotHostBackend {
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57
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58 private static final Unsafe unsafe = Unsafe.getUnsafe();
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59
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60 public SPARCHotSpotBackend(HotSpotGraalRuntime runtime, HotSpotProviders providers) {
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61 super(runtime, providers);
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62 }
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63
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64 @Override
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65 public boolean shouldAllocateRegisters() {
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66 return true;
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67 }
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68
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69 @Override
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70 public FrameMap newFrameMap() {
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71 return new SPARCFrameMap(getProviders().getCodeCache());
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72 }
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73
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74 @Override
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75 public LIRGenerator newLIRGenerator(StructuredGraph graph, Object stub, FrameMap frameMap, CallingConvention cc, LIR lir) {
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76 return new SPARCHotSpotLIRGenerator(graph, stub, getProviders(), getRuntime().getConfig(), frameMap, cc, lir);
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77 }
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78
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79 /**
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80 * Emits code to do stack overflow checking.
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81 *
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82 * @param afterFrameInit specifies if the stack pointer has already been adjusted to allocate
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83 * the current frame
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84 */
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85 protected static void emitStackOverflowCheck(CompilationResultBuilder crb, int pagesToBang, boolean afterFrameInit) {
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86 if (pagesToBang > 0) {
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87 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm;
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88 final int frameSize = crb.frameMap.totalFrameSize();
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89 if (frameSize > 0) {
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90 int lastFramePage = frameSize / unsafe.pageSize();
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91 // emit multiple stack bangs for methods with frames larger than a page
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92 for (int i = 0; i <= lastFramePage; i++) {
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93 int disp = (i + pagesToBang) * unsafe.pageSize();
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94 if (afterFrameInit) {
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95 disp -= frameSize;
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96 }
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97 crb.blockComment("[stack overflow check]");
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98 // Use SPARCAddress to get the final displacement including the stack bias.
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99 SPARCAddress address = new SPARCAddress(sp, -disp);
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100 if (SPARCAssembler.isSimm13(address.getDisplacement())) {
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101 new Stx(g0, address).emit(masm);
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102 } else {
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103 new Setx(address.getDisplacement(), g3).emit(masm);
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104 new Stx(g0, new SPARCAddress(sp, g3)).emit(masm);
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105 }
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106 }
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107 }
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108 }
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109 }
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110
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111 public class HotSpotFrameContext implements FrameContext {
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112
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113 final boolean isStub;
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114
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115 HotSpotFrameContext(boolean isStub) {
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116 this.isStub = isStub;
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117 }
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118
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119 public boolean hasFrame() {
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120 return true;
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121 }
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122
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123 @Override
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124 public void enter(CompilationResultBuilder crb) {
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125 final int frameSize = crb.frameMap.totalFrameSize();
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126
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127 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm;
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128 if (!isStub && pagesToBang > 0) {
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129 emitStackOverflowCheck(crb, pagesToBang, false);
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130 }
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131 new Save(sp, -frameSize, sp).emit(masm);
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132
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133 if (ZapStackOnMethodEntry.getValue()) {
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134 final int slotSize = 8;
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135 for (int i = 0; i < frameSize / slotSize; ++i) {
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136 // 0xC1C1C1C1
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137 new Stx(g0, new SPARCAddress(sp, i * slotSize)).emit(masm);
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138 }
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139 }
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140 }
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141
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142 @Override
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143 public void leave(CompilationResultBuilder crb) {
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144 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm;
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145 new RestoreWindow().emit(masm);
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146 }
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147 }
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148
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149 @Override
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150 protected Assembler createAssembler(FrameMap frameMap) {
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151 return new SPARCMacroAssembler(getTarget(), frameMap.registerConfig);
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152 }
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153
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154 @Override
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155 public CompilationResultBuilder newCompilationResultBuilder(LIRGenerator lirGen, CompilationResult compilationResult, CompilationResultBuilderFactory factory) {
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156 SPARCHotSpotLIRGenerator gen = (SPARCHotSpotLIRGenerator) lirGen;
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157 FrameMap frameMap = gen.getFrameMap();
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158 assert gen.deoptimizationRescueSlot == null || frameMap.frameNeedsAllocating() : "method that can deoptimize must have a frame";
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159
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160 Stub stub = gen.getStub();
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161 Assembler masm = createAssembler(frameMap);
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162 // On SPARC we always use stack frames.
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163 HotSpotFrameContext frameContext = new HotSpotFrameContext(stub != null);
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164 CompilationResultBuilder crb = factory.createBuilder(getProviders().getCodeCache(), getProviders().getForeignCalls(), frameMap, masm, frameContext, compilationResult);
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165 crb.setFrameSize(frameMap.frameSize());
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166 StackSlot deoptimizationRescueSlot = gen.deoptimizationRescueSlot;
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167 if (deoptimizationRescueSlot != null && stub == null) {
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168 crb.compilationResult.setCustomStackAreaOffset(frameMap.offsetForStackSlot(deoptimizationRescueSlot));
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169 }
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170
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171 if (stub != null) {
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172 // SPARC stubs always enter a frame which saves the registers.
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173 Set<Register> destroyedRegisters = Collections.emptySet();
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174 Map<LIRFrameState, SaveRegistersOp> calleeSaveInfo = Collections.emptyMap();
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175 updateStub(stub, destroyedRegisters, calleeSaveInfo, frameMap);
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176 }
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177
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178 return crb;
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179 }
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180
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181 @Override
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182 public void emitCode(CompilationResultBuilder crb, LIR lir, ResolvedJavaMethod installedCodeOwner) {
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183 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm;
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184 FrameMap frameMap = crb.frameMap;
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185 RegisterConfig regConfig = frameMap.registerConfig;
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186 HotSpotVMConfig config = getRuntime().getConfig();
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187 Label unverifiedStub = installedCodeOwner == null || isStatic(installedCodeOwner.getModifiers()) ? null : new Label();
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188
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189 // Emit the prefix
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190
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191 if (unverifiedStub != null) {
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192 crb.recordMark(Marks.MARK_UNVERIFIED_ENTRY);
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193 // We need to use JavaCall here because we haven't entered the frame yet.
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194 CallingConvention cc = regConfig.getCallingConvention(JavaCall, null, new JavaType[]{getProviders().getMetaAccess().lookupJavaType(Object.class)}, getTarget(), false);
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195 Register inlineCacheKlass = g5; // see MacroAssembler::ic_call
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196 Register scratch = g3;
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197 Register receiver = asRegister(cc.getArgument(0));
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198 SPARCAddress src = new SPARCAddress(receiver, config.hubOffset);
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199
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200 new Ldx(src, scratch).emit(masm);
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201 new Cmp(scratch, inlineCacheKlass).emit(masm);
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202 new Bpne(CC.Xcc, unverifiedStub).emit(masm);
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203 new Nop().emit(masm); // delay slot
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204 }
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205
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206 masm.align(config.codeEntryAlignment);
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207 crb.recordMark(Marks.MARK_OSR_ENTRY);
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208 crb.recordMark(Marks.MARK_VERIFIED_ENTRY);
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209
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210 // Emit code for the LIR
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211 crb.emit(lir);
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212
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213 HotSpotFrameContext frameContext = (HotSpotFrameContext) crb.frameContext;
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214 HotSpotForeignCallsProvider foreignCalls = getProviders().getForeignCalls();
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215 if (!frameContext.isStub) {
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216 crb.recordMark(Marks.MARK_EXCEPTION_HANDLER_ENTRY);
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217 SPARCCall.directCall(crb, masm, foreignCalls.lookupForeignCall(EXCEPTION_HANDLER), null, false, null);
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218 crb.recordMark(Marks.MARK_DEOPT_HANDLER_ENTRY);
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219 SPARCCall.directCall(crb, masm, foreignCalls.lookupForeignCall(DEOPT_HANDLER), null, false, null);
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220 } else {
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221 // No need to emit the stubs for entries back into the method since
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222 // it has no calls that can cause such "return" entries
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223 }
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224
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225 if (unverifiedStub != null) {
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226 masm.bind(unverifiedStub);
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227 Register scratch = g3;
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228 SPARCCall.indirectJmp(crb, masm, scratch, foreignCalls.lookupForeignCall(IC_MISS_HANDLER));
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229 }
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230 }
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231
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232 @Override
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233 public NativeFunctionInterface getNativeFunctionInterface() {
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234 throw GraalInternalError.unimplemented("No NativeFunctionInterface of SPARC");
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235 }
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236 }