1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package dexfuzz.rawdex.formats;
18
19import dexfuzz.rawdex.DexRandomAccessFile;
20import dexfuzz.rawdex.Instruction;
21import dexfuzz.rawdex.Opcode;
22import dexfuzz.rawdex.OpcodeInfo;
23
24import java.io.IOException;
25
26public class Format22c extends Format2 implements ContainsVRegs, ContainsPoolIndex {
27  @Override
28  public void writeToFile(DexRandomAccessFile file, Instruction insn) throws IOException {
29    file.writeByte((byte) insn.info.value);
30    file.writeByte((byte) (insn.vregA | (insn.vregB << 4)));
31    file.writeUShort((short) insn.vregC);
32    return;
33  }
34
35  @Override
36  public long getA(byte[] raw) throws IOException {
37    return RawInsnHelper.getUnsignedLowNibbleFromByte(raw, 1);
38  }
39
40  @Override
41  public long getB(byte[] raw) throws IOException {
42    return RawInsnHelper.getUnsignedHighNibbleFromByte(raw, 1);
43  }
44
45  @Override
46  public long getC(byte[] raw) throws IOException {
47    return RawInsnHelper.getUnsignedShortFromTwoBytes(raw, 2);
48  }
49
50  @Override
51  public int getVRegCount() {
52    return 2;
53  }
54
55  @Override
56  public int getPoolIndex(Instruction insn) {
57    return (int) insn.vregC;
58  }
59
60  @Override
61  public void setPoolIndex(Instruction insn, int poolIndex) {
62    insn.vregC = poolIndex;
63  }
64
65  @Override
66  public PoolIndexKind getPoolIndexKind(OpcodeInfo info) {
67    if (info.opcode == Opcode.INSTANCE_OF || info.opcode == Opcode.NEW_ARRAY) {
68      return PoolIndexKind.Type;
69    }
70    return PoolIndexKind.Field;
71  }
72}
73