1 /* 2 * Copyright (c) 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.aot; 24 25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_20; 27 28 import org.graalvm.compiler.common.PermanentBailoutException; 29 import org.graalvm.compiler.graph.Node; 30 import org.graalvm.compiler.graph.NodeClass; 31 import org.graalvm.compiler.graph.spi.Canonicalizable; 32 import org.graalvm.compiler.graph.spi.CanonicalizerTool; 33 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; 34 import org.graalvm.compiler.hotspot.meta.HotSpotConstantLoadAction; 35 import org.graalvm.compiler.hotspot.nodes.DeoptimizingStubCall; 36 import org.graalvm.compiler.hotspot.word.KlassPointer; 37 import org.graalvm.compiler.lir.LIRFrameState; 38 import org.graalvm.compiler.nodeinfo.NodeInfo; 39 import org.graalvm.compiler.nodes.ValueNode; 40 import org.graalvm.compiler.nodes.spi.LIRLowerable; 41 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 42 import org.graalvm.compiler.nodes.util.GraphUtil; 43 44 import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant; 45 import jdk.vm.ci.hotspot.HotSpotObjectConstant; 46 import jdk.vm.ci.meta.Constant; 47 import jdk.vm.ci.meta.Value; 48 49 /** 50 * A call to the VM via a regular stub. 51 */ 52 @NodeInfo(cycles = CYCLES_UNKNOWN, size = SIZE_20) 53 public class ResolveConstantStubCall extends DeoptimizingStubCall implements Canonicalizable, LIRLowerable { 54 public static final NodeClass<ResolveConstantStubCall> TYPE = NodeClass.create(ResolveConstantStubCall.class); 55 56 @OptionalInput protected ValueNode value; 57 @Input protected ValueNode string; 58 protected Constant constant; 59 protected HotSpotConstantLoadAction action; 60 61 public ResolveConstantStubCall(ValueNode value, ValueNode string) { 62 super(TYPE, value.stamp()); 63 this.value = value; 64 this.string = string; 65 this.action = HotSpotConstantLoadAction.RESOLVE; 66 } 67 68 public ResolveConstantStubCall(ValueNode value, ValueNode string, HotSpotConstantLoadAction action) { 69 super(TYPE, value.stamp()); 70 this.value = value; 71 this.string = string; 72 this.action = action; 73 } 74 75 @NodeIntrinsic 76 public static native Object resolveObject(Object value, Object symbol); 77 78 @NodeIntrinsic 79 public static native KlassPointer resolveKlass(KlassPointer value, Object symbol); 80 81 @NodeIntrinsic 82 public static native KlassPointer resolveKlass(KlassPointer value, Object symbol, @ConstantNodeParameter HotSpotConstantLoadAction action); 83 84 @Override 85 public Node canonical(CanonicalizerTool tool) { 86 if (value != null) { 87 constant = GraphUtil.foldIfConstantAndRemove(this, value); 88 } 89 return this; 90 } 91 92 @Override 93 public void generate(NodeLIRBuilderTool gen) { 94 assert constant != null : "Expected the value to fold: " + value; 95 Value stringValue = gen.operand(string); 96 Value result; 97 LIRFrameState fs = gen.state(this); 98 assert fs != null : "The stateAfter is null"; 99 if (constant instanceof HotSpotObjectConstant) { 100 result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitObjectConstantRetrieval(constant, stringValue, fs); 101 } else if (constant instanceof HotSpotMetaspaceConstant) { 102 if (action == HotSpotConstantLoadAction.RESOLVE) { 103 result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitMetaspaceConstantRetrieval(constant, stringValue, fs); 104 } else { 105 assert action == HotSpotConstantLoadAction.INITIALIZE; 106 result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitKlassInitializationAndRetrieval(constant, stringValue, fs); 107 } 108 } else { 109 throw new PermanentBailoutException("Unsupported constant type: " + constant); 110 } 111 gen.setResult(this, result); 112 } 113 114 }