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      1 /*
      2  * Copyright 2013, 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.dexlib2.dexbacked.instruction;
     33 
     34 import org.jf.dexlib2.Opcode;
     35 import org.jf.dexlib2.dexbacked.DexBackedDexFile;
     36 import org.jf.dexlib2.iface.instruction.formats.Instruction35ms;
     37 import org.jf.util.NibbleUtils;
     38 
     39 import javax.annotation.Nonnull;
     40 
     41 public class DexBackedInstruction35ms extends DexBackedInstruction implements Instruction35ms {
     42     public DexBackedInstruction35ms(@Nonnull DexBackedDexFile dexFile,
     43                                     @Nonnull Opcode opcode,
     44                                     int instructionStart) {
     45         super(dexFile, opcode, instructionStart);
     46     }
     47 
     48     @Override public int getRegisterCount() {
     49         return NibbleUtils.extractHighUnsignedNibble(dexFile.readUbyte(instructionStart + 1));
     50     }
     51 
     52     @Override
     53     public int getRegisterC() {
     54         return NibbleUtils.extractLowUnsignedNibble(dexFile.readUbyte(instructionStart + 4));
     55     }
     56 
     57     @Override
     58     public int getRegisterD() {
     59         return NibbleUtils.extractHighUnsignedNibble(dexFile.readUbyte(instructionStart + 4));
     60     }
     61 
     62     @Override
     63     public int getRegisterE() {
     64         return NibbleUtils.extractLowUnsignedNibble(dexFile.readUbyte(instructionStart + 5));
     65     }
     66 
     67     @Override
     68     public int getRegisterF() {
     69         return NibbleUtils.extractHighUnsignedNibble(dexFile.readUbyte(instructionStart + 5));
     70     }
     71 
     72     @Override
     73     public int getRegisterG() {
     74         return NibbleUtils.extractLowUnsignedNibble(dexFile.readUbyte(instructionStart + 1));
     75     }
     76 
     77     @Override
     78     public int getVtableIndex() {
     79         return dexFile.readUshort(instructionStart + 2);
     80     }
     81 }
     82