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view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/RuntimeCallStub.java @ 9673:37ec49e1d7e2
extended RuntimeCallStub to support calls returning an Object
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Mon, 13 May 2013 19:01:30 +0200 |
parents | c5b1b4dcc094 |
children | a54720257b76 |
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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.api.meta.MetaUtil.*; import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*; import java.lang.reflect.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.code.CallingConvention.Type; import com.oracle.graal.api.code.RuntimeCallTarget.Descriptor; import com.oracle.graal.api.meta.*; import com.oracle.graal.debug.*; import com.oracle.graal.graph.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.bridge.*; import com.oracle.graal.hotspot.meta.*; import com.oracle.graal.hotspot.nodes.*; import com.oracle.graal.hotspot.replacements.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.java.*; import com.oracle.graal.nodes.java.MethodCallTargetNode.InvokeKind; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; import com.oracle.graal.phases.common.*; import com.oracle.graal.replacements.*; import com.oracle.graal.replacements.nodes.*; import com.oracle.graal.word.*; import com.oracle.graal.word.phases.*; /** * Base class for a stub that calls into a HotSpot C/C++ runtime function using the native * {@link CallingConvention}. */ public class RuntimeCallStub extends Stub { /** * The target of the call. */ private final HotSpotRuntimeCallTarget target; /** * Specifies if the JavaThread value for the current thread is to be prepended to the arguments * for the call to {@link #target}. */ protected final boolean prependThread; /** * Creates a stub for a call to code at a given address. * * @param address the address of the code to call * @param sig the signature of the call to this stub * @param prependThread true if the JavaThread value for the current thread is to be prepended * to the arguments for the call to {@code address} * @param regConfig used to get the calling convention for the call to this stub from Graal * compiled Java code as well as the calling convention for the call to * {@code address} * @param vm the Java to HotSpot C/C++ runtime interface */ public RuntimeCallStub(long address, Descriptor sig, boolean prependThread, HotSpotRuntime runtime, Replacements replacements, RegisterConfig regConfig, CompilerToVM vm) { super(runtime, replacements, new HotSpotRuntimeCallTarget(sig, 0L, false, createCallingConvention(runtime, regConfig, sig), vm)); this.prependThread = prependThread; Class[] targetParameterTypes = createTargetParameters(sig); Descriptor targetSig = new Descriptor(sig.getName() + ":C", sig.hasSideEffect(), sig.getResultType(), targetParameterTypes); CallingConvention targetCc = createCallingConvention(runtime, regConfig, targetSig); target = new HotSpotRuntimeCallTarget(targetSig, address, true, targetCc, vm); } /** * Gets the linkage information for the runtime call. */ public HotSpotRuntimeCallTarget getTargetLinkage() { return target; } private static CallingConvention createCallingConvention(HotSpotRuntime runtime, RegisterConfig regConfig, Descriptor d) { Class<?>[] argumentTypes = d.getArgumentTypes(); JavaType[] parameterTypes = new JavaType[argumentTypes.length]; for (int i = 0; i < parameterTypes.length; ++i) { parameterTypes[i] = runtime.lookupJavaType(argumentTypes[i]); } TargetDescription target = graalRuntime().getTarget(); JavaType returnType = runtime.lookupJavaType(d.getResultType()); return regConfig.getCallingConvention(Type.NativeCall, returnType, parameterTypes, target, false); } private Class[] createTargetParameters(Descriptor sig) { Class[] parameters = sig.getArgumentTypes(); if (prependThread) { Class[] newParameters = new Class[parameters.length + 1]; System.arraycopy(parameters, 0, newParameters, 1, parameters.length); newParameters[0] = Word.class; return newParameters; } return parameters; } @Override protected ResolvedJavaMethod getInstalledCodeOwner() { return null; } @Override protected Object debugScopeContext() { return new JavaMethod() { public Signature getSignature() { Descriptor d = linkage.descriptor; Class<?>[] arguments = d.getArgumentTypes(); JavaType[] parameters = new JavaType[arguments.length]; for (int i = 0; i < arguments.length; i++) { parameters[i] = runtime.lookupJavaType(arguments[i]); } return new HotSpotSignature(runtime.lookupJavaType(d.getResultType()), parameters); } public String getName() { return linkage.descriptor.getName(); } public JavaType getDeclaringClass() { return runtime.lookupJavaType(RuntimeCallStub.class); } @Override public String toString() { return format("HotSpotStub<%n(%p)>", this); } }; } static class GraphBuilder { public GraphBuilder(Stub stub) { this.graph = new StructuredGraph(stub.toString(), null); graph.replaceFixed(graph.start(), graph.add(new StubStartNode(stub))); this.lastFixedNode = graph.start(); } final StructuredGraph graph; private FixedWithNextNode lastFixedNode; <T extends Node> T add(T node) { T result = graph.add(node); assert node == result; if (result instanceof FixedNode) { assert lastFixedNode != null; FixedNode fixed = (FixedNode) result; assert fixed.predecessor() == null; graph.addAfterFixed(lastFixedNode, fixed); if (fixed instanceof FixedWithNextNode) { lastFixedNode = (FixedWithNextNode) fixed; } else { lastFixedNode = null; } } return result; } } @Override protected StructuredGraph getGraph() { Class<?>[] args = linkage.getDescriptor().getArgumentTypes(); boolean isObjectResult = linkage.getCallingConvention().getReturn().getKind() == Kind.Object; GraphBuilder builder = new GraphBuilder(this); LocalNode[] locals = createLocals(builder, args); ReadRegisterNode thread = prependThread || isObjectResult ? builder.add(new ReadRegisterNode(runtime.threadRegister(), true, false)) : null; ValueNode result = createTargetCall(builder, locals, thread); createInvoke(builder, StubUtil.class, "handlePendingException", ConstantNode.forBoolean(isObjectResult, builder.graph)); if (isObjectResult) { InvokeNode object = createInvoke(builder, HotSpotReplacementsUtil.class, "getAndClearObjectResult", thread); result = createInvoke(builder, StubUtil.class, "verifyObject", object); } builder.add(new ReturnNode(linkage.descriptor.getResultType() == void.class ? null : result)); if (Debug.isDumpEnabled()) { Debug.dump(builder.graph, "Initial stub graph"); } for (InvokeNode invoke : builder.graph.getNodes(InvokeNode.class).snapshot()) { inline(invoke); } assert builder.graph.getNodes(InvokeNode.class).isEmpty(); if (Debug.isDumpEnabled()) { Debug.dump(builder.graph, "Stub graph before compilation"); } return builder.graph; } private LocalNode[] createLocals(GraphBuilder builder, Class<?>[] args) { LocalNode[] locals = new LocalNode[args.length]; ResolvedJavaType accessingClass = runtime.lookupJavaType(getClass()); for (int i = 0; i < args.length; i++) { ResolvedJavaType type = runtime.lookupJavaType(args[i]).resolve(accessingClass); Kind kind = type.getKind().getStackKind(); Stamp stamp; if (kind == Kind.Object) { stamp = StampFactory.declared(type); } else { stamp = StampFactory.forKind(kind); } LocalNode local = builder.add(new LocalNode(i, stamp)); locals[i] = local; } return locals; } private InvokeNode createInvoke(GraphBuilder builder, Class<?> declaringClass, String name, ValueNode... hpeArgs) { ResolvedJavaMethod method = null; for (Method m : declaringClass.getDeclaredMethods()) { if (Modifier.isStatic(m.getModifiers()) && m.getName().equals(name)) { assert method == null : "found more than one method in " + declaringClass + " named " + name; method = runtime.lookupJavaMethod(m); } } assert method != null : "did not find method in " + declaringClass + " named " + name; JavaType returnType = method.getSignature().getReturnType(null); MethodCallTargetNode callTarget = builder.add(new MethodCallTargetNode(InvokeKind.Static, method, hpeArgs, returnType)); InvokeNode invoke = builder.add(new InvokeNode(callTarget, FrameState.UNKNOWN_BCI)); return invoke; } private CRuntimeCall createTargetCall(GraphBuilder builder, LocalNode[] locals, ReadRegisterNode thread) { if (prependThread) { ValueNode[] targetArguments = new ValueNode[1 + locals.length]; targetArguments[0] = thread; System.arraycopy(locals, 0, targetArguments, 1, locals.length); return builder.add(new CRuntimeCall(target.descriptor, targetArguments)); } else { return builder.add(new CRuntimeCall(target.descriptor, locals)); } } private void inline(InvokeNode invoke) { StructuredGraph graph = invoke.graph(); ResolvedJavaMethod method = ((MethodCallTargetNode) invoke.callTarget()).targetMethod(); ReplacementsImpl repl = new ReplacementsImpl(runtime, new Assumptions(false), runtime.getTarget()); StructuredGraph calleeGraph = repl.makeGraph(method, null, null); InliningUtil.inline(invoke, calleeGraph, false); new NodeIntrinsificationPhase(runtime).apply(graph); new WordTypeRewriterPhase(runtime, wordKind()).apply(graph); new DeadCodeEliminationPhase().apply(graph); } }