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
24// NB: This format is only used for statically determined verification errors,
25// so we shouldn't encounter it in ART. (Or even before, as they are only written in during
26// verification, which comes after our fuzzing...)
27// Therefore, no need to say this implements ContainsPoolIndex, even though it is a *c format
28public class Format20bc extends Format2 {
29  @Override
30  public void writeToFile(DexRandomAccessFile file, Instruction insn) throws IOException {
31    file.writeByte((byte) insn.info.value);
32    file.writeByte((byte) insn.vregA);
33    file.writeUShort((short) insn.vregB);
34    return;
35  }
36
37  @Override
38  public long getA(byte[] raw) throws IOException {
39    return RawInsnHelper.getUnsignedByteFromByte(raw, 1);
40  }
41
42  @Override
43  public long getB(byte[] raw) throws IOException {
44    return RawInsnHelper.getUnsignedShortFromTwoBytes(raw, 1);
45  }
46
47  @Override
48  public long getC(byte[] raw) throws IOException {
49    return (long) 0;
50  }
51}
52