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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotCompiledRuntimeStub.java @ 18176:c2270ad35f57

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Better construction of data section and data patches.
author Roland Schatz <roland.schatz@oracle.com>
date Mon, 27 Oct 2014 14:07:49 +0100
parents bb97b75d1d65
children ef357effbda7
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ed6202820ecf renamed HotSpotCompilationResult to HotSpotCompiledCode and added subclasses HotSpotCompiledNmethod and HotSpotCompiledRuntimeStub
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1 /*
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2 * Copyright (c) 2011, 2014, 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;
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24
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25 import static com.oracle.graal.hotspot.HotSpotHostBackend.*;
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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.code.CompilationResult.Call;
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29 import com.oracle.graal.api.code.CompilationResult.ConstantReference;
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30 import com.oracle.graal.api.code.CompilationResult.DataPatch;
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31 import com.oracle.graal.api.code.CompilationResult.Infopoint;
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32 import com.oracle.graal.hotspot.meta.*;
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33 import com.oracle.graal.hotspot.stubs.*;
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34
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35 /**
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36 * {@link HotSpotCompiledCode} destined for installation as a RuntimeStub.
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37 */
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38 public final class HotSpotCompiledRuntimeStub extends HotSpotCompiledCode {
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39
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40 private static final long serialVersionUID = -4506206868419153274L;
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42 public final String stubName;
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43
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44 public HotSpotCompiledRuntimeStub(Stub stub, CompilationResult compResult) {
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45 super(compResult);
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46 this.stubName = stub.toString();
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47 assert checkStubInvariants(compResult);
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48 }
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49
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50 /**
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51 * Checks the conditions a compilation must satisfy to be installed as a RuntimeStub.
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52 */
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53 private boolean checkStubInvariants(CompilationResult compResult) {
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54 assert compResult.getExceptionHandlers().isEmpty();
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55 for (DataPatch data : compResult.getDataPatches()) {
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56 if (data.reference instanceof ConstantReference) {
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57 ConstantReference ref = (ConstantReference) data.reference;
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58 if (ref.getConstant() instanceof HotSpotMetaspaceConstant) {
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59 Object object = HotSpotMetaspaceConstant.getMetaspaceObject(ref.getConstant());
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60 if (object instanceof HotSpotResolvedObjectType && ((HotSpotResolvedObjectType) object).getName().equals("[I")) {
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61 // special handling for NewArrayStub
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62 // embedding the type '[I' is safe, since it is never unloaded
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63 continue;
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64 }
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65 }
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66 }
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67
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68 assert !(data.reference instanceof ConstantReference) : this + " cannot have embedded object or metadata constant: " + data.reference;
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69 }
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70 for (Infopoint infopoint : compResult.getInfopoints()) {
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71 assert infopoint instanceof Call : this + " cannot have non-call infopoint: " + infopoint;
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72 Call call = (Call) infopoint;
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73 assert call.target instanceof HotSpotForeignCallLinkage : this + " cannot have non runtime call: " + call.target;
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74 HotSpotForeignCallLinkage linkage = (HotSpotForeignCallLinkage) call.target;
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75 assert !linkage.isCompiledStub() || linkage.getDescriptor() == UNCOMMON_TRAP_HANDLER : this + " cannot call compiled stub " + linkage;
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76 }
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77 return true;
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78 }
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79
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80 @Override
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81 public String toString() {
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82 return stubName != null ? stubName : super.toString();
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83 }
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84 }