1/* 2 * [The "BSD licence"] 3 * Copyright (c) 2010 Ben Gruver (JesusFreke) 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29package org.jf.baksmali.Adaptors.Format; 30 31import org.jf.baksmali.Adaptors.LabelMethodItem; 32import org.jf.baksmali.Adaptors.MethodDefinition; 33import org.jf.util.IndentingWriter; 34import org.jf.dexlib.Code.OffsetInstruction; 35import org.jf.dexlib.Code.Opcode; 36import org.jf.dexlib.CodeItem; 37 38import java.io.IOException; 39 40public class OffsetInstructionFormatMethodItem extends InstructionMethodItem<OffsetInstruction> { 41 protected LabelMethodItem label; 42 43 public OffsetInstructionFormatMethodItem(MethodDefinition.LabelCache labelCache, CodeItem codeItem, int codeAddress, 44 OffsetInstruction instruction) { 45 super(codeItem, codeAddress, instruction); 46 47 label = new LabelMethodItem(codeAddress + instruction.getTargetAddressOffset(), getLabelPrefix()); 48 label = labelCache.internLabel(label); 49 } 50 51 @Override 52 protected void writeTargetLabel(IndentingWriter writer) throws IOException { 53 label.writeTo(writer); 54 } 55 56 public LabelMethodItem getLabel() { 57 return label; 58 } 59 60 private String getLabelPrefix() { 61 switch (instruction.getFormat()) { 62 case Format10t: 63 case Format20t: 64 case Format30t: 65 return "goto_"; 66 case Format21t: 67 case Format22t: 68 return "cond_"; 69 case Format31t: 70 if (instruction.opcode == Opcode.FILL_ARRAY_DATA) { 71 return "array_"; 72 } 73 if (instruction.opcode == Opcode.PACKED_SWITCH) { 74 return "pswitch_data_"; 75 } 76 assert instruction.opcode == Opcode.SPARSE_SWITCH; 77 return "sswitch_data_"; 78 } 79 80 assert false; 81 return null; 82 } 83} 84