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 26 package jdk.tools.jaotc; 27 28 import jdk.tools.jaotc.amd64.AMD64InstructionDecoder; 29 import jdk.tools.jaotc.aarch64.AArch64InstructionDecoder; 30 31 import jdk.vm.ci.amd64.AMD64; 32 import jdk.vm.ci.aarch64.AArch64; 33 import jdk.vm.ci.code.Architecture; 34 import jdk.vm.ci.code.TargetDescription; 35 36 public abstract class InstructionDecoder { 37 getInstructionDecoder(TargetDescription target)38 public static InstructionDecoder getInstructionDecoder(TargetDescription target) { 39 Architecture architecture = target.arch; 40 if (architecture instanceof AMD64) { 41 return new AMD64InstructionDecoder(target); 42 } else if (architecture instanceof AArch64) { 43 return new AArch64InstructionDecoder(); 44 } else { 45 throw new InternalError("Unsupported architecture " + architecture); 46 } 47 } 48 decodePosition(byte[] code, int pcOffset)49 public abstract void decodePosition(byte[] code, int pcOffset); 50 currentEndOfInstruction()51 public abstract int currentEndOfInstruction(); 52 53 } 54