1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/*
* [The "BSD licence"]
* Copyright (c) 2010 Ben Gruver (JesusFreke)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jf.dexlib.Code.Format;
import org.jf.dexlib.Code.Instruction;
import org.jf.dexlib.Code.OdexedFieldAccess;
import org.jf.dexlib.Code.Opcode;
import org.jf.dexlib.Code.TwoRegisterInstruction;
import org.jf.dexlib.DexFile;
import org.jf.dexlib.Util.AnnotatedOutput;
import org.jf.dexlib.Util.NumberUtils;
public class Instruction22cs extends Instruction implements TwoRegisterInstruction, OdexedFieldAccess {
public static final Instruction.InstructionFactory Factory = new Factory();
private byte regA;
private byte regB;
private short fieldOffset;
public Instruction22cs(Opcode opcode, byte regA, byte regB, int fieldOffset) {
super(opcode);
if (regA >= 1 << 4 ||
regB >= 1 << 4) {
throw new RuntimeException("The register number must be less than v16");
}
if (fieldOffset >= 1 << 16) {
throw new RuntimeException("The field offset must be less than 65536");
}
this.regA = regA;
this.regB = regB;
this.fieldOffset = (short)fieldOffset;
}
private Instruction22cs(Opcode opcode, byte[] buffer, int bufferIndex) {
super(opcode);
this.regA = NumberUtils.decodeLowUnsignedNibble(buffer[bufferIndex + 1]);
this.regB = NumberUtils.decodeHighUnsignedNibble(buffer[bufferIndex + 1]);
this.fieldOffset = (short)NumberUtils.decodeUnsignedShort(buffer, bufferIndex + 2);
}
protected void writeInstruction(AnnotatedOutput out, int currentCodeAddress) {
out.writeByte(opcode.value);
out.writeByte((regB << 4) | regA);
out.writeShort(fieldOffset);
}
public Format getFormat() {
return Format.Format22cs;
}
public int getRegisterA() {
return regA;
}
public int getRegisterB() {
return regB;
}
public int getFieldOffset() {
return fieldOffset & 0xFFFF;
}
private static class Factory implements Instruction.InstructionFactory {
public Instruction makeInstruction(DexFile dexFile, Opcode opcode, byte[] buffer, int bufferIndex) {
return new Instruction22cs(opcode, buffer, bufferIndex);
}
}
}
|
