Mercurial > hg > graal-compiler
diff graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/ForeignCallStub.java @ 9743:590e157cf4d4
rename: RuntimeCallStub -> ForeignCallStub
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Thu, 16 May 2013 18:12:04 +0200 |
parents | graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/RuntimeCallStub.java@cff1e11941c0 |
children | 82e3c8d5c77f |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/ForeignCallStub.java Thu May 16 18:12:04 2013 +0200 @@ -0,0 +1,252 @@ +/* + * 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.code.CallingConvention.Type.*; +import static com.oracle.graal.api.meta.MetaUtil.*; +import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*; +import static com.oracle.graal.hotspot.HotSpotForeignCallLinkage.RegisterEffect.*; +import static com.oracle.graal.hotspot.HotSpotForeignCallLinkage.Transition.*; + +import java.lang.reflect.*; + +import com.oracle.graal.api.code.*; +import com.oracle.graal.api.meta.*; +import com.oracle.graal.debug.*; +import com.oracle.graal.hotspot.*; +import com.oracle.graal.hotspot.HotSpotForeignCallLinkage.Transition; +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.calc.*; +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.*; + +/** + * A stub for a {@link Transition non-leaf} foreign call from compiled code. + */ +public class ForeignCallStub extends Stub { + + /** + * The target of the call. + */ + private final HotSpotForeignCallLinkage 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} + */ + public ForeignCallStub(long address, ForeignCallDescriptor sig, boolean prependThread, HotSpotRuntime runtime, Replacements replacements) { + super(runtime, replacements, HotSpotForeignCallLinkage.create(sig, 0L, PRESERVES_REGISTERS, JavaCallee, NOT_LEAF)); + this.prependThread = prependThread; + Class[] targetParameterTypes = createTargetParameters(sig); + ForeignCallDescriptor targetSig = new ForeignCallDescriptor(sig.getName() + ":C", sig.getResultType(), targetParameterTypes); + target = HotSpotForeignCallLinkage.create(targetSig, address, DESTROYS_REGISTERS, NativeCall, NOT_LEAF); + } + + /** + * Gets the linkage information for the call from this stub. + */ + public HotSpotForeignCallLinkage getTargetLinkage() { + return target; + } + + private Class[] createTargetParameters(ForeignCallDescriptor 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() { + ForeignCallDescriptor d = linkage.getDescriptor(); + 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.getDescriptor().getName(); + } + + public JavaType getDeclaringClass() { + return runtime.lookupJavaType(ForeignCallStub.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 FloatingNode> T add(T node) { + return graph.unique(node); + } + + <T extends FixedNode> T append(T node) { + T result = graph.add(node); + assert lastFixedNode != null; + assert result.predecessor() == null; + graph.addAfterFixed(lastFixedNode, result); + if (result instanceof FixedWithNextNode) { + lastFixedNode = (FixedWithNextNode) result; + } 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.append(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.append(new ReturnNode(linkage.getDescriptor().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.graph.add(new MethodCallTargetNode(InvokeKind.Static, method, hpeArgs, returnType)); + InvokeNode invoke = builder.append(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.append(new CRuntimeCall(target.getDescriptor(), targetArguments)); + } else { + return builder.append(new CRuntimeCall(target.getDescriptor(), 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); + } +}