1 /* 2 * Copyright (c) 2016, 2018, 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 24 25 package org.graalvm.compiler.hotspot.nodes.aot; 26 27 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN; 28 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_16; 29 30 import org.graalvm.compiler.core.common.PermanentBailoutException; 31 import org.graalvm.compiler.graph.Node; 32 import org.graalvm.compiler.graph.NodeClass; 33 import org.graalvm.compiler.graph.spi.Canonicalizable; 34 import org.graalvm.compiler.graph.spi.CanonicalizerTool; 35 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; 36 import org.graalvm.compiler.hotspot.meta.HotSpotConstantLoadAction; 37 import org.graalvm.compiler.hotspot.nodes.DeoptimizingStubCall; 38 import org.graalvm.compiler.hotspot.word.KlassPointer; 39 import org.graalvm.compiler.lir.LIRFrameState; 40 import org.graalvm.compiler.nodeinfo.NodeInfo; 41 import org.graalvm.compiler.nodes.NodeView; 42 import org.graalvm.compiler.nodes.ValueNode; 43 import org.graalvm.compiler.nodes.spi.LIRLowerable; 44 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 45 import org.graalvm.compiler.nodes.util.GraphUtil; 46 import org.graalvm.compiler.word.Word; 47 48 import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant; 49 import jdk.vm.ci.hotspot.HotSpotObjectConstant; 50 import jdk.vm.ci.meta.Constant; 51 import jdk.vm.ci.meta.Value; 52 53 /** 54 * A call to the VM via a regular stub. 55 */ 56 @NodeInfo(cycles = CYCLES_UNKNOWN, size = SIZE_16) 57 public class ResolveConstantStubCall extends DeoptimizingStubCall implements Canonicalizable, LIRLowerable { 58 public static final NodeClass<ResolveConstantStubCall> TYPE = NodeClass.create(ResolveConstantStubCall.class); 59 60 @OptionalInput protected ValueNode value; 61 @Input protected ValueNode string; 62 protected Constant constant; 63 protected HotSpotConstantLoadAction action; 64 65 public ResolveConstantStubCall(ValueNode value, ValueNode string) { 66 super(TYPE, value.stamp(NodeView.DEFAULT)); 67 this.value = value; 68 this.string = string; 69 this.action = HotSpotConstantLoadAction.RESOLVE; 70 } 71 72 public ResolveConstantStubCall(ValueNode value, ValueNode string, HotSpotConstantLoadAction action) { 73 super(TYPE, value.stamp(NodeView.DEFAULT)); 74 this.value = value; 75 this.string = string; 76 this.action = action; 77 } 78 79 @NodeIntrinsic 80 public static native Object resolveObject(Object value, Object symbol); 81 82 @NodeIntrinsic 83 public static native KlassPointer resolveKlass(KlassPointer value, Word symbol); 84 85 @NodeIntrinsic 86 public static native KlassPointer resolveKlass(KlassPointer value, Word symbol, @ConstantNodeParameter HotSpotConstantLoadAction action); 87 88 @Override 89 public Node canonical(CanonicalizerTool tool) { 90 if (value != null) { 91 constant = GraphUtil.foldIfConstantAndRemove(this, value); 92 } 93 return this; 94 } 95 96 @Override 97 public void generate(NodeLIRBuilderTool gen) { 98 assert constant != null : "Expected the value to fold: " + value; 99 Value stringValue = gen.operand(string); 100 Value result; 101 LIRFrameState fs = gen.state(this); 102 assert fs != null : "The stateAfter is null"; 103 if (constant instanceof HotSpotObjectConstant) { 104 result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitObjectConstantRetrieval(constant, stringValue, fs); 105 } else if (constant instanceof HotSpotMetaspaceConstant) { 106 if (action == HotSpotConstantLoadAction.RESOLVE) { 107 result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitMetaspaceConstantRetrieval(constant, stringValue, fs); 108 } else { 109 assert action == HotSpotConstantLoadAction.INITIALIZE; 110 result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitKlassInitializationAndRetrieval(constant, stringValue, fs); 111 } 112 } else { 113 throw new PermanentBailoutException("Unsupported constant type: " + constant); 114 } 115 gen.setResult(this, result); 116 } 117 }