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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*
* Copyright 2012, Google LLC
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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 com.android.tools.smali.dexlib2.dexbacked.instruction;
import com.android.tools.smali.dexlib2.Opcode;
import com.android.tools.smali.dexlib2.dexbacked.DexBuffer;
import com.android.tools.smali.util.ExceptionWithContext;
import com.android.tools.smali.dexlib2.dexbacked.DexBackedDexFile;
import com.android.tools.smali.dexlib2.dexbacked.DexReader;
import com.android.tools.smali.dexlib2.iface.instruction.Instruction;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
public abstract class DexBackedInstruction implements Instruction {
@Nonnull public final DexBackedDexFile dexFile;
@Nonnull public final Opcode opcode;
public final int instructionStart;
public DexBackedInstruction(@Nonnull DexBackedDexFile dexFile,
@Nonnull Opcode opcode,
int instructionStart) {
this.dexFile = dexFile;
this.opcode = opcode;
this.instructionStart = instructionStart;
}
@Nonnull public Opcode getOpcode() { return opcode; }
@Override public int getCodeUnits() { return opcode.format.size / 2; }
@Nonnull
public static Instruction readFrom(DexBackedDexFile dexFile, @Nonnull DexReader<? extends DexBuffer> reader) {
int opcodeValue = reader.peekUbyte();
if (opcodeValue == 0) {
opcodeValue = reader.peekUshort();
}
Opcode opcode = dexFile.getOpcodes().getOpcodeByValue(opcodeValue);
Instruction instruction = buildInstruction(dexFile, opcode,
reader.getOffset() + reader.dexBuf.getBaseOffset() -
dexFile.getBuffer().getBaseOffset() - dexFile.getBaseDataOffset());
reader.moveRelative(instruction.getCodeUnits()*2);
return instruction;
}
private static DexBackedInstruction buildInstruction(@Nonnull DexBackedDexFile dexFile, @Nullable Opcode opcode,
int instructionStartOffset) {
if (opcode == null) {
return new DexBackedUnknownInstruction(dexFile, instructionStartOffset);
}
switch (opcode.format) {
case Format10t:
return new DexBackedInstruction10t(dexFile, opcode, instructionStartOffset);
case Format10x:
return new DexBackedInstruction10x(dexFile, opcode, instructionStartOffset);
case Format11n:
return new DexBackedInstruction11n(dexFile, opcode, instructionStartOffset);
case Format11x:
return new DexBackedInstruction11x(dexFile, opcode, instructionStartOffset);
case Format12x:
return new DexBackedInstruction12x(dexFile, opcode, instructionStartOffset);
case Format20bc:
return new DexBackedInstruction20bc(dexFile, opcode, instructionStartOffset);
case Format20t:
return new DexBackedInstruction20t(dexFile, opcode, instructionStartOffset);
case Format21c:
return new DexBackedInstruction21c(dexFile, opcode, instructionStartOffset);
case Format21ih:
return new DexBackedInstruction21ih(dexFile, opcode, instructionStartOffset);
case Format21lh:
return new DexBackedInstruction21lh(dexFile, opcode, instructionStartOffset);
case Format21s:
return new DexBackedInstruction21s(dexFile, opcode, instructionStartOffset);
case Format21t:
return new DexBackedInstruction21t(dexFile, opcode, instructionStartOffset);
case Format22b:
return new DexBackedInstruction22b(dexFile, opcode, instructionStartOffset);
case Format22c:
return new DexBackedInstruction22c(dexFile, opcode, instructionStartOffset);
case Format22cs:
return new DexBackedInstruction22cs(dexFile, opcode, instructionStartOffset);
case Format22s:
return new DexBackedInstruction22s(dexFile, opcode, instructionStartOffset);
case Format22t:
return new DexBackedInstruction22t(dexFile, opcode, instructionStartOffset);
case Format22x:
return new DexBackedInstruction22x(dexFile, opcode, instructionStartOffset);
case Format23x:
return new DexBackedInstruction23x(dexFile, opcode, instructionStartOffset);
case Format30t:
return new DexBackedInstruction30t(dexFile, opcode, instructionStartOffset);
case Format31c:
return new DexBackedInstruction31c(dexFile, opcode, instructionStartOffset);
case Format31i:
return new DexBackedInstruction31i(dexFile, opcode, instructionStartOffset);
case Format31t:
return new DexBackedInstruction31t(dexFile, opcode, instructionStartOffset);
case Format32x:
return new DexBackedInstruction32x(dexFile, opcode, instructionStartOffset);
case Format35c:
return new DexBackedInstruction35c(dexFile, opcode, instructionStartOffset);
case Format35ms:
return new DexBackedInstruction35ms(dexFile, opcode, instructionStartOffset);
case Format35mi:
return new DexBackedInstruction35mi(dexFile, opcode, instructionStartOffset);
case Format3rc:
return new DexBackedInstruction3rc(dexFile, opcode, instructionStartOffset);
case Format3rmi:
return new DexBackedInstruction3rmi(dexFile, opcode, instructionStartOffset);
case Format3rms:
return new DexBackedInstruction3rms(dexFile, opcode, instructionStartOffset);
case Format45cc:
return new DexBackedInstruction45cc(dexFile, opcode, instructionStartOffset);
case Format4rcc:
return new DexBackedInstruction4rcc(dexFile, opcode, instructionStartOffset);
case Format51l:
return new DexBackedInstruction51l(dexFile, opcode, instructionStartOffset);
case PackedSwitchPayload:
return new DexBackedPackedSwitchPayload(dexFile, instructionStartOffset);
case SparseSwitchPayload:
return new DexBackedSparseSwitchPayload(dexFile, instructionStartOffset);
case ArrayPayload:
return new DexBackedArrayPayload(dexFile, instructionStartOffset);
default:
throw new ExceptionWithContext("Unexpected opcode format: %s", opcode.format.toString());
}
}
}
|
