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;
21
22import java.io.IOException;
23
24public class Format22s extends Format2 implements ContainsVRegs, ContainsConst {
25  @Override
26  public void writeToFile(DexRandomAccessFile file, Instruction insn) throws IOException {
27    file.writeByte((byte) insn.info.value);
28    file.writeByte((byte) (insn.vregA | (insn.vregB << 4)));
29    file.writeUShort((short) insn.vregC);
30    return;
31  }
32
33  @Override
34  public long getA(byte[] raw) throws IOException {
35    return RawInsnHelper.getUnsignedLowNibbleFromByte(raw, 1);
36  }
37
38  @Override
39  public long getB(byte[] raw) throws IOException {
40    return RawInsnHelper.getUnsignedHighNibbleFromByte(raw, 1);
41  }
42
43  @Override
44  public long getC(byte[] raw) throws IOException {
45    return RawInsnHelper.getSignedShortFromTwoBytes(raw, 2);
46  }
47
48  @Override
49  public long getConst(Instruction insn) {
50    return insn.vregC;
51  }
52
53  @Override
54  public void setConst(Instruction insn, long constant) {
55    insn.vregC = constant;
56  }
57
58  @Override
59  public long getConstRange() {
60    return (1 << 16);
61  }
62
63  @Override
64  public int getVRegCount() {
65    return 2;
66  }
67}
68