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      1 /*
      2  * Copyright 2012, 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.immutable.instruction;
     33 
     34 import org.jf.dexlib2.Format;
     35 import org.jf.dexlib2.Opcode;
     36 import org.jf.dexlib2.iface.instruction.formats.Instruction35c;
     37 import org.jf.dexlib2.iface.reference.Reference;
     38 import org.jf.dexlib2.immutable.reference.ImmutableReference;
     39 import org.jf.dexlib2.immutable.reference.ImmutableReferenceFactory;
     40 import org.jf.dexlib2.util.Preconditions;
     41 
     42 import javax.annotation.Nonnull;
     43 
     44 public class ImmutableInstruction35c extends ImmutableInstruction implements Instruction35c {
     45     public static final Format FORMAT = Format.Format35c;
     46 
     47     protected final int registerCount;
     48     protected final int registerC;
     49     protected final int registerD;
     50     protected final int registerE;
     51     protected final int registerF;
     52     protected final int registerG;
     53     @Nonnull protected final ImmutableReference reference;
     54 
     55     public ImmutableInstruction35c(@Nonnull Opcode opcode,
     56                                    int registerCount,
     57                                    int registerC,
     58                                    int registerD,
     59                                    int registerE,
     60                                    int registerF,
     61                                    int registerG,
     62                                    @Nonnull Reference reference) {
     63         super(opcode);
     64         this.registerCount = Preconditions.check35cRegisterCount(registerCount);
     65         this.registerC = (registerCount>0) ? Preconditions.checkNibbleRegister(registerC) : 0;
     66         this.registerD = (registerCount>1) ? Preconditions.checkNibbleRegister(registerD) : 0;
     67         this.registerE = (registerCount>2) ? Preconditions.checkNibbleRegister(registerE) : 0;
     68         this.registerF = (registerCount>3) ? Preconditions.checkNibbleRegister(registerF) : 0;
     69         this.registerG = (registerCount>4) ? Preconditions.checkNibbleRegister(registerG) : 0;
     70         this.reference = ImmutableReferenceFactory.of(opcode.referenceType, reference);
     71     }
     72 
     73     public static ImmutableInstruction35c of(Instruction35c instruction) {
     74         if (instruction instanceof ImmutableInstruction35c) {
     75             return (ImmutableInstruction35c)instruction;
     76         }
     77         return new ImmutableInstruction35c(
     78                 instruction.getOpcode(),
     79                 instruction.getRegisterCount(),
     80                 instruction.getRegisterC(),
     81                 instruction.getRegisterD(),
     82                 instruction.getRegisterE(),
     83                 instruction.getRegisterF(),
     84                 instruction.getRegisterG(),
     85                 instruction.getReference());
     86     }
     87 
     88     @Override public int getRegisterCount() { return registerCount; }
     89     @Override public int getRegisterC() { return registerC; }
     90     @Override public int getRegisterD() { return registerD; }
     91     @Override public int getRegisterE() { return registerE; }
     92     @Override public int getRegisterF() { return registerF; }
     93     @Override public int getRegisterG() { return registerG; }
     94     @Nonnull @Override public ImmutableReference getReference() { return reference; }
     95     @Override public int getReferenceType() { return opcode.referenceType; }
     96 
     97     @Override public Format getFormat() { return FORMAT; }
     98 }
     99