1 /* 2 * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.nodes; 24 25 import static org.graalvm.compiler.nodeinfo.InputType.Memory; 26 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN; 27 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_UNKNOWN; 28 29 import java.util.Arrays; 30 31 import org.graalvm.compiler.core.common.LocationIdentity; 32 import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor; 33 import org.graalvm.compiler.core.common.spi.ForeignCallLinkage; 34 import org.graalvm.compiler.core.common.spi.ForeignCallsProvider; 35 import org.graalvm.compiler.core.common.type.StampFactory; 36 import org.graalvm.compiler.graph.NodeClass; 37 import org.graalvm.compiler.graph.NodeInputList; 38 import org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil; 39 import org.graalvm.compiler.nodeinfo.NodeInfo; 40 import org.graalvm.compiler.nodeinfo.Verbosity; 41 import org.graalvm.compiler.nodes.FixedWithNextNode; 42 import org.graalvm.compiler.nodes.ValueNode; 43 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 44 import org.graalvm.compiler.nodes.spi.LIRLowerable; 45 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 46 47 import jdk.vm.ci.meta.JavaKind; 48 import jdk.vm.ci.meta.Value; 49 50 /** 51 * Node for a {@linkplain ForeignCallDescriptor foreign} call from within a stub. 52 */ 53 @NodeInfo(nameTemplate = "StubForeignCall#{p#descriptor/s}", allowedUsageTypes = Memory, cycles = CYCLES_UNKNOWN, size = SIZE_UNKNOWN) 54 public final class StubForeignCallNode extends FixedWithNextNode implements LIRLowerable, MemoryCheckpoint.Multi { 55 56 public static final NodeClass<StubForeignCallNode> TYPE = NodeClass.create(StubForeignCallNode.class); 57 @Input NodeInputList<ValueNode> arguments; 58 protected final ForeignCallsProvider foreignCalls; 59 60 protected final ForeignCallDescriptor descriptor; 61 62 public StubForeignCallNode(@InjectedNodeParameter ForeignCallsProvider foreignCalls, ForeignCallDescriptor descriptor, ValueNode... arguments) { 63 super(TYPE, StampFactory.forKind(JavaKind.fromJavaClass(descriptor.getResultType()))); 64 this.arguments = new NodeInputList<>(this, arguments); 65 this.descriptor = descriptor; 66 this.foreignCalls = foreignCalls; 67 } 68 69 public ForeignCallDescriptor getDescriptor() { 70 return descriptor; 71 } 72 73 @Override 74 public LocationIdentity[] getLocationIdentities() { 75 LocationIdentity[] killedLocations = foreignCalls.getKilledLocations(descriptor); 76 killedLocations = Arrays.copyOf(killedLocations, killedLocations.length + 1); 77 killedLocations[killedLocations.length - 1] = HotSpotReplacementsUtil.PENDING_EXCEPTION_LOCATION; 78 return killedLocations; 79 } 80 81 protected Value[] operands(NodeLIRBuilderTool gen) { 82 Value[] operands = new Value[arguments.size()]; 83 for (int i = 0; i < operands.length; i++) { 84 operands[i] = gen.operand(arguments.get(i)); 85 } 86 return operands; 87 } 88 89 @Override 90 public void generate(NodeLIRBuilderTool gen) { 91 assert graph().start() instanceof StubStartNode; 92 ForeignCallLinkage linkage = foreignCalls.lookupForeignCall(descriptor); 93 Value[] operands = operands(gen); 94 Value result = gen.getLIRGeneratorTool().emitForeignCall(linkage, null, operands); 95 if (result != null) { 96 gen.setResult(this, result); 97 } 98 } 99 100 @Override 101 public String toString(Verbosity verbosity) { 102 if (verbosity == Verbosity.Name) { 103 return super.toString(verbosity) + "#" + descriptor; 104 } 105 return super.toString(verbosity); 106 } 107 }