1 /* 2 * Copyright (c) 2015, 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.amd64; 26 27 import static jdk.vm.ci.code.ValueUtil.asRegister; 28 29 import java.util.ArrayList; 30 import java.util.EnumSet; 31 32 import jdk.vm.ci.code.CallingConvention; 33 import jdk.vm.ci.meta.AllocatableValue; 34 import jdk.vm.ci.meta.Constant; 35 import jdk.vm.ci.meta.Value; 36 37 import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler; 38 import org.graalvm.compiler.core.common.spi.ForeignCallLinkage; 39 import org.graalvm.compiler.lir.LIRFrameState; 40 import org.graalvm.compiler.lir.LIRInstructionClass; 41 import org.graalvm.compiler.lir.LIRValueUtil; 42 import org.graalvm.compiler.lir.ValueProcedure; 43 import org.graalvm.compiler.lir.amd64.AMD64LIRInstruction; 44 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 45 46 public final class AMD64HotSpotConstantRetrievalOp extends AMD64LIRInstruction { 47 public static final LIRInstructionClass<AMD64HotSpotConstantRetrievalOp> TYPE = LIRInstructionClass.create(AMD64HotSpotConstantRetrievalOp.class); 48 49 @Def protected AllocatableValue result; 50 protected final Constant[] constants; 51 @Alive protected AllocatableValue[] constantDescriptions; 52 @Temp protected AllocatableValue[] gotSlotOffsetParameters; 53 @Temp protected AllocatableValue[] descriptionParameters; 54 @Temp protected Value[] callTemps; 55 @State protected LIRFrameState frameState; 56 private final ForeignCallLinkage callLinkage; 57 private final Object[] notes; 58 59 private class CollectTemporaries implements ValueProcedure { 60 ArrayList<Value> values = new ArrayList<>(); 61 62 CollectTemporaries() { 63 forEachTemp(this); 64 } 65 66 public Value[] asArray() { 67 Value[] copy = new Value[values.size()]; 68 return values.toArray(copy); 69 } 70 71 @Override 72 public Value doValue(Value value, OperandMode mode, EnumSet<OperandFlag> flags) { 73 values.add(value); 74 return value; 75 } 76 } 77 78 public AMD64HotSpotConstantRetrievalOp(Constant[] constants, AllocatableValue[] constantDescriptions, LIRFrameState frameState, ForeignCallLinkage callLinkage, Object[] notes) { 79 super(TYPE); 80 this.constantDescriptions = constantDescriptions; 81 this.constants = constants; 82 this.frameState = frameState; 83 this.notes = notes; 84 assert constants.length == notes.length; 85 86 // call arguments 87 CallingConvention callingConvention = callLinkage.getOutgoingCallingConvention(); 88 this.gotSlotOffsetParameters = new AllocatableValue[constants.length]; 89 int argIndex = 0; 90 for (int i = 0; i < constants.length; i++, argIndex++) { 91 this.gotSlotOffsetParameters[i] = callingConvention.getArgument(argIndex); 92 } 93 this.descriptionParameters = new AllocatableValue[constantDescriptions.length]; 94 for (int i = 0; i < constantDescriptions.length; i++, argIndex++) { 95 this.descriptionParameters[i] = callingConvention.getArgument(argIndex); 96 } 97 this.result = callingConvention.getReturn(); 98 99 this.callLinkage = callLinkage; 100 101 // compute registers that are killed by the stub, but are not used as other temps. 102 this.callTemps = new Value[0]; 103 this.callTemps = LIRValueUtil.subtractRegisters(callLinkage.getTemporaries(), new CollectTemporaries().asArray()); 104 } 105 106 @Override 107 public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) { 108 // metadata_adr 109 for (int i = 0; i < constants.length; i++) { 110 crb.recordInlineDataInCodeWithNote(constants[i], notes[i]); 111 masm.leaq(asRegister(gotSlotOffsetParameters[i]), masm.getPlaceholder(-1)); 112 } 113 114 for (int i = 0; i < constantDescriptions.length; i++) { 115 masm.movq(asRegister(descriptionParameters[i]), asRegister(constantDescriptions[i])); 116 } 117 118 final int before = masm.position(); 119 masm.call(); 120 final int after = masm.position(); 121 crb.recordDirectCall(before, after, callLinkage, frameState); 122 } 123 124 }