1 /* 2 * Copyright 2011, Google Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following disclaimer 13 * in the documentation and/or other materials provided with the 14 * distribution. 15 * * Neither the name of Google Inc. nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 package org.jf.dexlib.Code.Format; 33 34 import org.jf.dexlib.Code.Instruction; 35 import org.jf.dexlib.Code.Opcode; 36 import org.jf.dexlib.Code.TwoRegisterInstruction; 37 import org.jf.dexlib.DexFile; 38 import org.jf.dexlib.Item; 39 import org.jf.dexlib.Util.AnnotatedOutput; 40 import org.jf.dexlib.Util.NumberUtils; 41 42 public class Instruction52c extends InstructionWithJumboReference implements TwoRegisterInstruction { 43 public static final InstructionFactory Factory = new Factory(); 44 private short regA; 45 private short regB; 46 47 public Instruction52c(Opcode opcode, int regA, int regB, Item referencedItem) { 48 super(opcode, referencedItem); 49 50 if (regA >= 1 << 16) { 51 throw new RuntimeException("The register number must be less than v65536"); 52 } 53 54 if (regB >= 1 << 16) { 55 throw new RuntimeException("The register number must be less than v65536"); 56 } 57 58 this.regA = (short)regA; 59 this.regB = (short)regB; 60 } 61 62 private Instruction52c(DexFile dexFile, Opcode opcode, byte[] buffer, int bufferIndex) { 63 super(dexFile, opcode, buffer, bufferIndex); 64 65 this.regA = (short)NumberUtils.decodeUnsignedShort(buffer, bufferIndex + 6); 66 this.regB = (short)NumberUtils.decodeUnsignedShort(buffer, bufferIndex + 8); 67 } 68 69 protected void writeInstruction(AnnotatedOutput out, int currentCodeAddress) { 70 out.writeByte(0xFF); 71 out.writeByte(opcode.value); 72 out.writeInt(getReferencedItem().getIndex()); 73 out.writeShort(getRegisterA()); 74 out.writeShort(getRegisterB()); 75 } 76 77 public Format getFormat() { 78 return Format.Format52c; 79 } 80 81 public int getRegisterA() { 82 return regA & 0xFFFF; 83 } 84 85 public int getRegisterB() { 86 return regB & 0xFFFF; 87 } 88 89 private static class Factory implements InstructionFactory { 90 public Instruction makeInstruction(DexFile dexFile, Opcode opcode, byte[] buffer, int bufferIndex) { 91 return new Instruction52c(dexFile, opcode, buffer, bufferIndex); 92 } 93 } 94 } 95
