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 32package org.jf.dexlib.Code.Format; 33 34import org.jf.dexlib.Code.*; 35import org.jf.dexlib.DexFile; 36import org.jf.dexlib.Util.AnnotatedOutput; 37import org.jf.dexlib.Util.NumberUtils; 38 39 40public class Instruction35mi extends Instruction implements FiveRegisterInstruction, OdexedInvokeInline { 41 public static final InstructionFactory Factory = new Factory(); 42 private byte regCount; 43 private byte regA; 44 private byte regD; 45 private byte regE; 46 private byte regF; 47 private byte regG; 48 private short inlineIndex; 49 50 public Instruction35mi(Opcode opcode, int regCount, byte regD, byte regE, byte regF, byte regG, 51 byte regA, int inlineIndex) { 52 super(opcode); 53 if (regCount > 5) { 54 throw new RuntimeException("regCount cannot be greater than 5"); 55 } 56 57 if (regD >= 1 << 4 || 58 regE >= 1 << 4 || 59 regF >= 1 << 4 || 60 regG >= 1 << 4 || 61 regA >= 1 << 4) { 62 throw new RuntimeException("All register args must fit in 4 bits"); 63 } 64 65 if (inlineIndex >= 1 << 16) { 66 throw new RuntimeException("The method index must be less than 65536"); 67 } 68 69 this.regCount = (byte)regCount; 70 this.regA = regA; 71 this.regD = regD; 72 this.regE = regE; 73 this.regF = regF; 74 this.regG = regG; 75 this.inlineIndex = (short)inlineIndex; 76 } 77 78 private Instruction35mi(Opcode opcode, byte[] buffer, int bufferIndex) { 79 super(opcode); 80 81 this.regCount = NumberUtils.decodeHighUnsignedNibble(buffer[bufferIndex + 1]); 82 this.regA = NumberUtils.decodeLowUnsignedNibble(buffer[bufferIndex + 1]); 83 this.regD = NumberUtils.decodeLowUnsignedNibble(buffer[bufferIndex + 4]); 84 this.regE = NumberUtils.decodeHighUnsignedNibble(buffer[bufferIndex + 4]); 85 this.regF = NumberUtils.decodeLowUnsignedNibble(buffer[bufferIndex + 5]); 86 this.regG = NumberUtils.decodeHighUnsignedNibble(buffer[bufferIndex + 5]); 87 this.inlineIndex = (short)NumberUtils.decodeUnsignedShort(buffer, bufferIndex + 2); 88 } 89 90 protected void writeInstruction(AnnotatedOutput out, int currentCodeAddress) { 91 out.writeByte(opcode.value); 92 out.writeByte((regCount << 4) | regA); 93 out.writeShort(inlineIndex); 94 out.writeByte((regE << 4) | regD); 95 out.writeByte((regG << 4) | regF); 96 } 97 98 public Format getFormat() { 99 return Format.Format35mi; 100 } 101 102 public int getRegCount() { 103 return regCount; 104 } 105 106 public byte getRegisterA() { 107 return regA; 108 } 109 110 public byte getRegisterD() { 111 return regD; 112 } 113 114 public byte getRegisterE() { 115 return regE; 116 } 117 118 public byte getRegisterF() { 119 return regF; 120 } 121 122 public byte getRegisterG() { 123 return regG; 124 } 125 126 public int getInlineIndex() { 127 return inlineIndex & 0xFFFF; 128 } 129 130 private static class Factory implements InstructionFactory { 131 public Instruction makeInstruction(DexFile dexFile, Opcode opcode, byte[] buffer, int bufferIndex) { 132 return new Instruction35mi(opcode, buffer, bufferIndex); 133 } 134 } 135} 136 137