1 /* 2 * Copyright (c) 2015, 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.amd64; 24 25 import static jdk.vm.ci.code.ValueUtil.asRegister; 26 27 import java.util.ArrayList; 28 import java.util.EnumSet; 29 30 import jdk.vm.ci.code.CallingConvention; 31 import jdk.vm.ci.meta.AllocatableValue; 32 import jdk.vm.ci.meta.Constant; 33 import jdk.vm.ci.meta.Value; 34 35 import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler; 36 import org.graalvm.compiler.core.common.spi.ForeignCallLinkage; 37 import org.graalvm.compiler.lir.LIRFrameState; 38 import org.graalvm.compiler.lir.LIRInstructionClass; 39 import org.graalvm.compiler.lir.LIRValueUtil; 40 import org.graalvm.compiler.lir.ValueProcedure; 41 import org.graalvm.compiler.lir.amd64.AMD64LIRInstruction; 42 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 43 44 public final class AMD64HotSpotConstantRetrievalOp extends AMD64LIRInstruction { 45 public static final LIRInstructionClass<AMD64HotSpotConstantRetrievalOp> TYPE = LIRInstructionClass.create(AMD64HotSpotConstantRetrievalOp.class); 46 47 @Def protected AllocatableValue result; 48 protected final Constant[] constants; 49 @Alive protected AllocatableValue[] constantDescriptions; 50 @Temp protected AllocatableValue[] gotSlotOffsetParameters; 51 @Temp protected AllocatableValue[] descriptionParameters; 52 @Temp protected Value[] callTemps; 53 @State protected LIRFrameState frameState; 54 private final ForeignCallLinkage callLinkage; 55 private final Object[] notes; 56 57 private class CollectTemporaries implements ValueProcedure { 58 ArrayList<Value> values = new ArrayList<>(); 59 60 CollectTemporaries() { 61 forEachTemp(this); 62 } 63 64 public Value[] asArray() { 65 Value[] copy = new Value[values.size()]; 66 return values.toArray(copy); 67 } 68 69 @Override 70 public Value doValue(Value value, OperandMode mode, EnumSet<OperandFlag> flags) { 71 values.add(value); 72 return value; 73 } 74 } 75 76 public AMD64HotSpotConstantRetrievalOp(Constant[] constants, AllocatableValue[] constantDescriptions, LIRFrameState frameState, ForeignCallLinkage callLinkage, Object[] notes) { 77 super(TYPE); 78 this.constantDescriptions = constantDescriptions; 79 this.constants = constants; 80 this.frameState = frameState; 81 this.notes = notes; 82 assert constants.length == notes.length; 83 84 // call arguments 85 CallingConvention callingConvention = callLinkage.getOutgoingCallingConvention(); 86 this.gotSlotOffsetParameters = new AllocatableValue[constants.length]; 87 int argIndex = 0; 88 for (int i = 0; i < constants.length; i++, argIndex++) { 89 this.gotSlotOffsetParameters[i] = callingConvention.getArgument(argIndex); 90 } 91 this.descriptionParameters = new AllocatableValue[constantDescriptions.length]; 92 for (int i = 0; i < constantDescriptions.length; i++, argIndex++) { 93 this.descriptionParameters[i] = callingConvention.getArgument(argIndex); 94 } 95 this.result = callingConvention.getReturn(); 96 97 this.callLinkage = callLinkage; 98 99 // compute registers that are killed by the stub, but are not used as other temps. 100 this.callTemps = new Value[0]; 101 this.callTemps = LIRValueUtil.subtractRegisters(callLinkage.getTemporaries(), new CollectTemporaries().asArray()); 102 } 103 104 @Override 105 public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) { 106 // metadata_adr 107 for (int i = 0; i < constants.length; i++) { 108 crb.recordInlineDataInCodeWithNote(constants[i], notes[i]); 109 masm.leaq(asRegister(gotSlotOffsetParameters[i]), masm.getPlaceholder(-1)); 110 } 111 112 for (int i = 0; i < constantDescriptions.length; i++) { 113 masm.movq(asRegister(descriptionParameters[i]), asRegister(constantDescriptions[i])); 114 } 115 116 final int before = masm.position(); 117 masm.call(); 118 final int after = masm.position(); 119 crb.recordDirectCall(before, after, callLinkage, frameState); 120 } 121 122 }