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 
17 package dexfuzz.rawdex.formats;
18 
19 import dexfuzz.rawdex.DexRandomAccessFile;
20 import dexfuzz.rawdex.Instruction;
21 
22 import java.io.IOException;
23 
24 public class Format11n extends Format1 implements ContainsConst, ContainsVRegs {
25   @Override
writeToFile(DexRandomAccessFile file, Instruction insn)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     return;
30   }
31 
32   @Override
getA(byte[] raw)33   public long getA(byte[] raw) throws IOException {
34     return RawInsnHelper.getUnsignedLowNibbleFromByte(raw, 1);
35   }
36 
37   @Override
getB(byte[] raw)38   public long getB(byte[] raw) throws IOException {
39     return RawInsnHelper.getUnsignedHighNibbleFromByte(raw, 1);
40   }
41 
42   @Override
getC(byte[] raw)43   public long getC(byte[] raw) throws IOException {
44     return (long) 0;
45   }
46 
47   @Override
getConst(Instruction insn)48   public long getConst(Instruction insn) {
49     return insn.vregB;
50   }
51 
52   @Override
setConst(Instruction insn, long constant)53   public void setConst(Instruction insn, long constant) {
54     insn.vregB = constant;
55   }
56 
57   @Override
getConstRange()58   public long getConstRange() {
59     return (1 << 4);
60   }
61 
62   @Override
getVRegCount()63   public int getVRegCount() {
64     return 1;
65   }
66 }
67