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.aarch64; 26 27 import static jdk.vm.ci.code.ValueUtil.asRegister; 28 29 import java.util.function.Function; 30 31 import org.graalvm.compiler.asm.aarch64.AArch64Assembler; 32 import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler; 33 import org.graalvm.compiler.core.common.calc.Condition; 34 import org.graalvm.compiler.debug.GraalError; 35 import org.graalvm.compiler.lir.LIRInstructionClass; 36 import org.graalvm.compiler.lir.LabelRef; 37 import org.graalvm.compiler.lir.SwitchStrategy; 38 import org.graalvm.compiler.lir.aarch64.AArch64ControlFlow; 39 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 40 41 import jdk.vm.ci.code.Register; 42 import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant; 43 import jdk.vm.ci.meta.Constant; 44 import jdk.vm.ci.meta.Value; 45 46 final class AArch64HotSpotStrategySwitchOp extends AArch64ControlFlow.StrategySwitchOp { 47 public static final LIRInstructionClass<AArch64HotSpotStrategySwitchOp> TYPE = LIRInstructionClass.create(AArch64HotSpotStrategySwitchOp.class); 48 49 AArch64HotSpotStrategySwitchOp(SwitchStrategy strategy, LabelRef[] keyTargets, LabelRef defaultTarget, Value key, Value scratch, Function<Condition, AArch64Assembler.ConditionFlag> converter) { 50 super(TYPE, strategy, keyTargets, defaultTarget, key, scratch, converter); 51 } 52 53 @Override 54 public void emitCode(final CompilationResultBuilder crb, final AArch64MacroAssembler masm) { 55 strategy.run(new HotSpotSwitchClosure(asRegister(key), crb, masm)); 56 } 57 58 public class HotSpotSwitchClosure extends SwitchClosure { 59 60 protected HotSpotSwitchClosure(Register keyRegister, CompilationResultBuilder crb, AArch64MacroAssembler masm) { 61 super(keyRegister, crb, masm); 62 } 63 64 @Override 65 protected void emitComparison(Constant c) { 66 if (c instanceof HotSpotMetaspaceConstant) { 67 HotSpotMetaspaceConstant meta = (HotSpotMetaspaceConstant) c; 68 if (meta.isCompressed()) { 69 crb.recordInlineDataInCode(meta); 70 // masm.cmpl(keyRegister, 0xDEADDEAD); 71 throw GraalError.unimplemented(); 72 } else { 73 crb.recordInlineDataInCode(meta); 74 masm.movNativeAddress(asRegister(scratch), 0x0000_DEAD_DEAD_DEADL); 75 masm.cmp(64, keyRegister, asRegister(scratch)); 76 } 77 } else { 78 super.emitComparison(c); 79 } 80 } 81 } 82 }