Instruction21t.java revision 4238ac2dd12461e285472dedfc0e53669b5aec35
15867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com/* 25867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * [The "BSD licence"] 35867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * Copyright (c) 2009 Ben Gruver 45867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * All rights reserved. 55867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * 65867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * Redistribution and use in source and binary forms, with or without 75867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * modification, are permitted provided that the following conditions 85867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * are met: 95867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * 1. Redistributions of source code must retain the above copyright 105867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * notice, this list of conditions and the following disclaimer. 115867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * 2. Redistributions in binary form must reproduce the above copyright 125867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * notice, this list of conditions and the following disclaimer in the 135867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * documentation and/or other materials provided with the distribution. 145867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * 3. The name of the author may not be used to endorse or promote products 155867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * derived from this software without specific prior written permission. 165867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * 175867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 185867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 195867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 205867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 215867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 225867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 235867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 245867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 255867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 265867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 275867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com */ 285867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 295867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.compackage org.jf.dexlib.Code.Format; 305867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 314238ac2dd12461e285472dedfc0e53669b5aec35JesusFreke@JesusFreke.comimport org.jf.dexlib.Code.*; 325867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.comimport org.jf.dexlib.DexFile; 335867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.comimport org.jf.dexlib.Util.NumberUtils; 34fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.comimport org.jf.dexlib.Util.AnnotatedOutput; 355867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 364238ac2dd12461e285472dedfc0e53669b5aec35JesusFreke@JesusFreke.compublic class Instruction21t extends Instruction implements OffsetInstruction, SingleRegisterInstruction { 375867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com public static final Instruction.InstructionFactory Factory = new Factory(); 38fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com private byte regA; 397570fe03829e1896bdc4c6c75a24de93990245daJesusFreke@JesusFreke.com private short offset; 40fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com 41fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com public Instruction21t(Opcode opcode, short regA, short offB) { 42fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com super(opcode); 435867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 445867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com if (regA >= 1 << 8) { 455867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com throw new RuntimeException("The register number must be less than v256"); 465867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 475867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 485867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com if (offB == 0) { 495867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com throw new RuntimeException("The offset cannot be 0."); 505867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 515867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 52fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com this.regA = (byte)regA; 53fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com this.offset = offB; 545867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 555867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 565867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com private Instruction21t(Opcode opcode, byte[] buffer, int bufferIndex) { 57fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com super(opcode); 585867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 59fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com assert buffer[bufferIndex] == opcode.value; 60fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com 61fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com regA = buffer[bufferIndex + 1]; 62fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com offset = NumberUtils.decodeShort(buffer, bufferIndex + 2); 63fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com assert offset != 0; 64fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com } 65fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com 66fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com protected void writeInstruction(AnnotatedOutput out, int currentCodeOffset) { 67fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com out.writeByte(opcode.value); 68fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com out.writeByte(regA); 69fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com out.writeShort(offset); 70fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com } 71fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com 72fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com public void updateOffset(int offset) { 737570fe03829e1896bdc4c6c75a24de93990245daJesusFreke@JesusFreke.com if (offset < Short.MIN_VALUE || offset > Short.MAX_VALUE) { 747570fe03829e1896bdc4c6c75a24de93990245daJesusFreke@JesusFreke.com throw new RuntimeException("The offset " + offset + " is out of range. It must be in [-32768, 32767]"); 757570fe03829e1896bdc4c6c75a24de93990245daJesusFreke@JesusFreke.com } 767570fe03829e1896bdc4c6c75a24de93990245daJesusFreke@JesusFreke.com if (offset == 0) { 777570fe03829e1896bdc4c6c75a24de93990245daJesusFreke@JesusFreke.com throw new RuntimeException("The offset cannot be 0"); 787570fe03829e1896bdc4c6c75a24de93990245daJesusFreke@JesusFreke.com } 797570fe03829e1896bdc4c6c75a24de93990245daJesusFreke@JesusFreke.com this.offset = (short)offset; 805867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 815867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 825867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com public Format getFormat() { 835867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com return Format.Format21t; 845867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 855867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 864238ac2dd12461e285472dedfc0e53669b5aec35JesusFreke@JesusFreke.com public int getRegisterA() { 87fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com return regA & 0xFF; 885867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 895867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 905867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com public int getOffset() { 91fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com return offset; 925867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 935867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 945867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com private static class Factory implements Instruction.InstructionFactory { 955867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com public Instruction makeInstruction(DexFile dexFile, Opcode opcode, byte[] buffer, int bufferIndex) { 965867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com return new Instruction21t(opcode, buffer, bufferIndex); 975867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 985867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 995867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com} 100