Instruction30t.java revision 00fc68adf2e39aeb9fed35293f2576bbe729ec4b 
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.dexlib.Code.Format;
30
31import org.jf.dexlib.DexFile;
32import org.jf.dexlib.Code.Instruction;
33import org.jf.dexlib.Code.Opcode;
34import org.jf.dexlib.Code.OffsetInstruction;
35import org.jf.dexlib.Util.AnnotatedOutput;
36import org.jf.dexlib.Util.NumberUtils;
37
38public class Instruction30t extends Instruction implements OffsetInstruction {
39    public static final InstructionFactory Factory = new Factory();
40    private int targetAddressOffset;
41
42    public Instruction30t(Opcode opcode, int offA) {
43        super(opcode);
44        this.targetAddressOffset = offA;
45    }
46
47    private Instruction30t(Opcode opcode, byte[] buffer, int bufferIndex) {
48        super(opcode);
49
50        assert buffer[bufferIndex] == opcode.value;
51
52        this.targetAddressOffset = NumberUtils.decodeInt(buffer, bufferIndex+2);
53    }
54
55    protected void writeInstruction(AnnotatedOutput out, int currentCodeAddress) {
56        out.writeByte(opcode.value);
57        out.writeByte(0x00);
58        out.writeInt(targetAddressOffset);
59    }
60
61    public void updateTargetAddressOffset(int targetAddressOffset) {
62        this.targetAddressOffset = targetAddressOffset;
63    }
64
65    public Format getFormat() {
66        return Format.Format30t;
67    }
68
69    public int getTargetAddressOffset() {
70        return targetAddressOffset;
71    }
72
73    private static class Factory implements InstructionFactory {
74        public Instruction makeInstruction(DexFile dexFile, Opcode opcode, byte[] buffer, int bufferIndex) {
75            return new Instruction30t(opcode, buffer, bufferIndex);
76        }
77    }
78}
79