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annotate graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotBackend.java @ 10470:53ba9df05fa2

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fixed remaining SPARC warnings using ecj
author twisti
date Fri, 21 Jun 2013 11:58:39 -0700
parents 699ee4e4f9dc
children 73122b5edf6a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 sun.misc.*;
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26
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27 import com.oracle.graal.api.code.*;
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28 import com.oracle.graal.api.meta.*;
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29 import com.oracle.graal.asm.*;
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30 import com.oracle.graal.asm.sparc.*;
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31 import com.oracle.graal.asm.sparc.SPARCAssembler.*;
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32 import com.oracle.graal.compiler.gen.LIRGenerator;
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33 import com.oracle.graal.hotspot.*;
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34 import com.oracle.graal.hotspot.bridge.*;
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35 import com.oracle.graal.hotspot.meta.*;
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36 import com.oracle.graal.hotspot.stubs.Stub;
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37 import com.oracle.graal.lir.*;
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38 import com.oracle.graal.lir.asm.*;
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39 import com.oracle.graal.nodes.*;
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40
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41 import static com.oracle.graal.sparc.SPARC.*;
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42 import static com.oracle.graal.asm.sparc.SPARCMacroAssembler.*;
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43 import static com.oracle.graal.api.code.CallingConvention.Type.*;
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44 import static com.oracle.graal.api.code.ValueUtil.*;
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45 import static com.oracle.graal.phases.GraalOptions.*;
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46 import static java.lang.reflect.Modifier.*;
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47
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48 /**
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49 * HotSpot SPARC specific backend.
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50 */
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51 public class SPARCHotSpotBackend extends HotSpotBackend {
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52
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53 private static final Unsafe unsafe = Unsafe.getUnsafe();
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54
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55 public SPARCHotSpotBackend(HotSpotRuntime runtime, TargetDescription 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(StructuredGraph graph, FrameMap frameMap, CallingConvention cc, LIR lir) {
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61 return new SPARCHotSpotLIRGenerator(graph, runtime(), target, frameMap, cc, lir);
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62 }
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63
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64 /**
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65 * Emits code to do stack overflow checking.
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66 *
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67 * @param afterFrameInit specifies if the stack pointer has already been adjusted to allocate
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68 * the current frame
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69 */
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70 protected static void emitStackOverflowCheck(TargetMethodAssembler tasm, boolean afterFrameInit) {
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71 if (StackShadowPages.getValue() > 0) {
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72 // SPARCMacroAssembler masm = (SPARCMacroAssembler) tasm.asm;
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73 final int frameSize = tasm.frameMap.frameSize();
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74 if (frameSize > 0) {
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75 int lastFramePage = frameSize / unsafe.pageSize();
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76 // emit multiple stack bangs for methods with frames larger than a page
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77 for (int i = 0; i <= lastFramePage; i++) {
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78 // int disp = (i + StackShadowPages.getValue()) * unsafe.pageSize();
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79 // if (afterFrameInit) {
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80 // disp -= frameSize;
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81 // }
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82 tasm.blockComment("[stack overflow check]");
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83 // FIXME currently doesn't work; maybe frame size is wrong
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84 // new Ldx(new SPARCAddress(sp, -disp), g0).emit(masm);
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85 }
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86 }
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87 }
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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 final boolean isStub;
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93
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94 HotSpotFrameContext(boolean isStub) {
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95 this.isStub = isStub;
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96 }
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97
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98 @Override
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99 public void enter(TargetMethodAssembler tasm) {
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100 final int frameSize = tasm.frameMap.frameSize();
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101
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102 SPARCMacroAssembler masm = (SPARCMacroAssembler) tasm.asm;
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103 if (!isStub) {
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104 emitStackOverflowCheck(tasm, false);
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105 }
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106 new Save(sp, frameSize, sp).emit(masm);
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107
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108 if (ZapStackOnMethodEntry.getValue()) {
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109 final int slotSize = 8;
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110 for (int i = 0; i < frameSize / slotSize; ++i) {
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111 // 0xC1C1C1C1
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112 new Stx(g0, new SPARCAddress(sp, i * slotSize)).emit(masm);
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113 }
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114 }
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115 }
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116
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117 @Override
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118 public void leave(TargetMethodAssembler tasm) {
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119 SPARCMacroAssembler masm = (SPARCMacroAssembler) tasm.asm;
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120 new RestoreWindow().emit(masm);
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121 }
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122 }
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123
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124 @Override
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125 protected AbstractAssembler createAssembler(FrameMap frameMap) {
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126 return new SPARCMacroAssembler(target, frameMap.registerConfig);
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127 }
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128
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129 @Override
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130 public TargetMethodAssembler newAssembler(LIRGenerator lirGen, CompilationResult compilationResult) {
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131 SPARCHotSpotLIRGenerator gen = (SPARCHotSpotLIRGenerator) lirGen;
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132 FrameMap frameMap = gen.frameMap;
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133
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134 Stub stub = gen.getStub();
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135 AbstractAssembler masm = createAssembler(frameMap);
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136 // On SPARC we always use stack frames.
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137 HotSpotFrameContext frameContext = new HotSpotFrameContext(stub != null);
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138 TargetMethodAssembler tasm = new TargetMethodAssembler(target, runtime(), frameMap, masm, frameContext, compilationResult);
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139 tasm.setFrameSize(frameMap.frameSize());
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140 StackSlot deoptimizationRescueSlot = gen.deoptimizationRescueSlot;
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141 if (deoptimizationRescueSlot != null && stub == null) {
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142 tasm.compilationResult.setCustomStackAreaOffset(frameMap.offsetForStackSlot(deoptimizationRescueSlot));
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143 }
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144
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145 return tasm;
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146 }
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147
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148 @Override
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149 public void emitCode(TargetMethodAssembler tasm, LIRGenerator lirGen, ResolvedJavaMethod installedCodeOwner) {
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150 SPARCMacroAssembler masm = (SPARCMacroAssembler) tasm.asm;
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151 FrameMap frameMap = tasm.frameMap;
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152 RegisterConfig regConfig = frameMap.registerConfig;
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153 HotSpotVMConfig config = runtime().config;
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154 Label unverifiedStub = installedCodeOwner == null || isStatic(installedCodeOwner.getModifiers()) ? null : new Label();
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155
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156 // Emit the prefix
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157
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158 if (unverifiedStub != null) {
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159 tasm.recordMark(Marks.MARK_UNVERIFIED_ENTRY);
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160 CallingConvention cc = regConfig.getCallingConvention(JavaCallee, null, new JavaType[]{runtime().lookupJavaType(Object.class)}, target, false);
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161 Register inlineCacheKlass = g5; // see MacroAssembler::ic_call
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162 Register receiver = asRegister(cc.getArgument(0));
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163 SPARCAddress src = new SPARCAddress(receiver, config.hubOffset);
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164
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165 new Ldx(src, g0).emit(masm);
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166 new Cmp(inlineCacheKlass, g0).emit(masm);
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167 new Bpne(CC.Xcc, unverifiedStub).emit(masm);
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168 new Nop().emit(masm); // delay slot
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169 }
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170
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171 masm.align(config.codeEntryAlignment);
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172 tasm.recordMark(Marks.MARK_OSR_ENTRY);
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173 tasm.recordMark(Marks.MARK_VERIFIED_ENTRY);
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174
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175 // Emit code for the LIR
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176 lirGen.lir.emitCode(tasm);
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177
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178 HotSpotFrameContext frameContext = (HotSpotFrameContext) tasm.frameContext;
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179 if (frameContext != null && !frameContext.isStub) {
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180 tasm.recordMark(Marks.MARK_EXCEPTION_HANDLER_ENTRY);
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181 // SPARCCall.directCall(tasm, asm, runtime().lookupForeignCall(EXCEPTION_HANDLER), null, false,
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182 // null);
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183 tasm.recordMark(Marks.MARK_DEOPT_HANDLER_ENTRY);
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184 // SPARCCall.directCall(tasm, asm, runtime().lookupForeignCall(DEOPT_HANDLER), null, false, null);
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185 } else {
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186 // No need to emit the stubs for entries back into the method since
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187 // it has no calls that can cause such "return" entries
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188 assert !frameMap.accessesCallerFrame() : lirGen.getGraph();
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189 }
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190
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191 if (unverifiedStub != null) {
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192 masm.bind(unverifiedStub);
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193 // SPARCCall.directJmp(tasm, asm, runtime().lookupForeignCall(IC_MISS_HANDLER));
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194 throw new InternalError("g0 must be scratch register");
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195 }
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196 }
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197 }