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 * 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.
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package org.graalvm.compiler.hotspot.nodes;

import static org.graalvm.compiler.nodeinfo.InputType.Memory;
import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_UNKNOWN;

import java.util.Arrays;

import org.graalvm.compiler.core.common.LocationIdentity;
import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor;
import org.graalvm.compiler.core.common.spi.ForeignCallLinkage;
import org.graalvm.compiler.core.common.spi.ForeignCallsProvider;
import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.graph.NodeInputList;
import org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodeinfo.Verbosity;
import org.graalvm.compiler.nodes.FixedWithNextNode;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;

import jdk.vm.ci.meta.JavaKind;
import jdk.vm.ci.meta.Value;

Node for a foreign call from within a stub.
/** * Node for a {@linkplain ForeignCallDescriptor foreign} call from within a stub. */
@NodeInfo(nameTemplate = "StubForeignCall#{p#descriptor/s}", allowedUsageTypes = Memory, cycles = CYCLES_UNKNOWN, size = SIZE_UNKNOWN) public final class StubForeignCallNode extends FixedWithNextNode implements LIRLowerable, MemoryCheckpoint.Multi { public static final NodeClass<StubForeignCallNode> TYPE = NodeClass.create(StubForeignCallNode.class); @Input NodeInputList<ValueNode> arguments; protected final ForeignCallsProvider foreignCalls; protected final ForeignCallDescriptor descriptor; public StubForeignCallNode(@InjectedNodeParameter ForeignCallsProvider foreignCalls, ForeignCallDescriptor descriptor, ValueNode... arguments) { super(TYPE, StampFactory.forKind(JavaKind.fromJavaClass(descriptor.getResultType()))); this.arguments = new NodeInputList<>(this, arguments); this.descriptor = descriptor; this.foreignCalls = foreignCalls; } public ForeignCallDescriptor getDescriptor() { return descriptor; } @Override public LocationIdentity[] getLocationIdentities() { LocationIdentity[] killedLocations = foreignCalls.getKilledLocations(descriptor); killedLocations = Arrays.copyOf(killedLocations, killedLocations.length + 1); killedLocations[killedLocations.length - 1] = HotSpotReplacementsUtil.PENDING_EXCEPTION_LOCATION; return killedLocations; } protected Value[] operands(NodeLIRBuilderTool gen) { Value[] operands = new Value[arguments.size()]; for (int i = 0; i < operands.length; i++) { operands[i] = gen.operand(arguments.get(i)); } return operands; } @Override public void generate(NodeLIRBuilderTool gen) { assert graph().start() instanceof StubStartNode; ForeignCallLinkage linkage = foreignCalls.lookupForeignCall(descriptor); Value[] operands = operands(gen); Value result = gen.getLIRGeneratorTool().emitForeignCall(linkage, null, operands); if (result != null) { gen.setResult(this, result); } } @Override public String toString(Verbosity verbosity) { if (verbosity == Verbosity.Name) { return super.toString(verbosity) + "#" + descriptor; } return super.toString(verbosity); } }