Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/Stub.java @ 9618:bd4a7d657dcc
moved static methods out of Stub into StubUtil
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 08 May 2013 21:05:39 +0200 |
parents | c1ef2bf6848e |
children | 0eda2b7df748 |
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/* * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.hotspot.stubs; import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*; import java.util.*; import java.util.concurrent.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.code.CompilationResult.Call; import com.oracle.graal.api.code.CompilationResult.DataPatch; import com.oracle.graal.api.code.CompilationResult.Infopoint; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.*; import com.oracle.graal.compiler.target.*; import com.oracle.graal.debug.*; import com.oracle.graal.debug.internal.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.meta.*; import com.oracle.graal.hotspot.nodes.*; import com.oracle.graal.java.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.phases.*; import com.oracle.graal.phases.PhasePlan.PhasePosition; //JaCoCo Exclude /** * Base class for implementing some low level code providing the out-of-line slow path for a snippet * and/or a callee saved call to a HotSpot C/C++ runtime function or even a another compiled Java * method. */ public abstract class Stub { /** * The linkage information for the stub. */ protected final HotSpotRuntimeCallTarget linkage; /** * The code installed for the stub. */ protected InstalledCode code; /** * The registers destroyed by this stub. */ private Set<Register> destroyedRegisters; public void initDestroyedRegisters(Set<Register> registers) { assert registers != null; assert destroyedRegisters == null || registers.equals(destroyedRegisters) : "cannot redefine"; destroyedRegisters = registers; } /** * Gets the registers defined by this stub. These are the temporaries of this stub and must thus * be caller saved by a callers of this stub. */ public Set<Register> getDestroyedRegisters() { assert destroyedRegisters != null : "not yet initialized"; return destroyedRegisters; } /** * Determines if this stub preserves all registers apart from those it * {@linkplain #getDestroyedRegisters() destroys}. */ public boolean preservesRegisters() { return true; } protected final HotSpotRuntime runtime; protected final Replacements replacements; /** * Creates a new stub. * * @param linkage linkage details for a call to the stub */ public Stub(HotSpotRuntime runtime, Replacements replacements, HotSpotRuntimeCallTarget linkage) { this.linkage = linkage; this.runtime = runtime; this.replacements = replacements; } public HotSpotRuntimeCallTarget getLinkage() { return linkage; } /** * Checks the conditions a compilation must satisfy to be installed as a RuntimeStub. */ private boolean checkStubInvariants(CompilationResult compResult) { for (DataPatch data : compResult.getDataReferences()) { Constant constant = data.constant; assert constant.getKind() != Kind.Object : this + " cannot have embedded object constant: " + constant; assert constant.getPrimitiveAnnotation() == null : this + " cannot have embedded metadata: " + constant; } for (Infopoint infopoint : compResult.getInfopoints()) { assert infopoint instanceof Call : this + " cannot have non-call infopoint: " + infopoint; Call call = (Call) infopoint; assert call.target instanceof HotSpotRuntimeCallTarget : this + " cannot have non runtime call: " + call.target; HotSpotRuntimeCallTarget callTarget = (HotSpotRuntimeCallTarget) call.target; assert callTarget.getAddress() == graalRuntime().getConfig().uncommonTrapStub || callTarget.isCRuntimeCall() : this + "must only call C runtime or deoptimization stub, not " + call.target; } return true; } protected abstract StructuredGraph getGraph(); @Override public abstract String toString(); /** * Gets the method under which the compiled code for this stub is * {@linkplain CodeCacheProvider#addMethod(ResolvedJavaMethod, CompilationResult) installed}. */ protected abstract ResolvedJavaMethod getInstallationMethod(); /** * Gets the code for this stub, compiling it first if necessary. */ public synchronized InstalledCode getCode(final Backend backend) { if (code == null) { final StructuredGraph graph = getGraph(); Debug.sandbox("CompilingStub", new Object[]{runtime, graph}, DebugScope.getConfig(), new Runnable() { @Override public void run() { StubStartNode newStart = graph.add(new StubStartNode(Stub.this)); newStart.setStateAfter(graph.start().stateAfter()); graph.replaceFixed(graph.start(), newStart); graph.setStart(newStart); PhasePlan phasePlan = new PhasePlan(); GraphBuilderPhase graphBuilderPhase = new GraphBuilderPhase(runtime, GraphBuilderConfiguration.getDefault(), OptimisticOptimizations.ALL); phasePlan.addPhase(PhasePosition.AFTER_PARSING, graphBuilderPhase); CallingConvention cc = linkage.getCallingConvention(); final CompilationResult compResult = GraalCompiler.compileGraph(graph, cc, runtime, replacements, backend, runtime.getTarget(), null, phasePlan, OptimisticOptimizations.ALL, new SpeculationLog()); assert checkStubInvariants(compResult); assert destroyedRegisters != null; code = Debug.scope("CodeInstall", new Callable<InstalledCode>() { @Override public InstalledCode call() { InstalledCode installedCode = runtime.addMethod(getInstallationMethod(), compResult); assert installedCode != null : "error installing stub " + this; if (Debug.isDumpEnabled()) { Debug.dump(new Object[]{compResult, installedCode}, "After code installation"); } // TTY.println(getMethod().toString()); // TTY.println(runtime().disassemble(installedCode)); return installedCode; } }); } }); assert code != null : "error installing stub " + this; } return code; } }