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
159
160
161
162
163
164
165
166
167
168
169
|
/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// TODO: Dex helpers have ART specific APIs, we may want to refactor these for use in dexdump.
#ifndef ART_RUNTIME_DEX_CODE_ITEM_ACCESSORS_H_
#define ART_RUNTIME_DEX_CODE_ITEM_ACCESSORS_H_
#include "base/mutex.h"
#include "compact_dex_file.h"
#include "dex_file.h"
#include "dex_instruction_iterator.h"
#include "standard_dex_file.h"
namespace art {
class ArtMethod;
// Abstracts accesses to the instruction fields of code items for CompactDexFile and
// StandardDexFile.
class CodeItemInstructionAccessor {
public:
ALWAYS_INLINE CodeItemInstructionAccessor(const DexFile& dex_file,
const DexFile::CodeItem* code_item);
ALWAYS_INLINE explicit CodeItemInstructionAccessor(ArtMethod* method);
ALWAYS_INLINE DexInstructionIterator begin() const;
ALWAYS_INLINE DexInstructionIterator end() const;
IterationRange<DexInstructionIterator> InstructionsFrom(uint32_t start_dex_pc) const;
uint32_t InsnsSizeInCodeUnits() const {
return insns_size_in_code_units_;
}
const uint16_t* Insns() const {
return insns_;
}
// Return the instruction for a dex pc.
const Instruction& InstructionAt(uint32_t dex_pc) const {
DCHECK_LT(dex_pc, InsnsSizeInCodeUnits());
return *Instruction::At(insns_ + dex_pc);
}
// Return true if the accessor has a code item.
bool HasCodeItem() const {
return Insns() != nullptr;
}
protected:
CodeItemInstructionAccessor() = default;
ALWAYS_INLINE void Init(uint32_t insns_size_in_code_units, const uint16_t* insns);
ALWAYS_INLINE void Init(const CompactDexFile::CodeItem& code_item);
ALWAYS_INLINE void Init(const StandardDexFile::CodeItem& code_item);
ALWAYS_INLINE void Init(const DexFile& dex_file, const DexFile::CodeItem* code_item);
private:
// size of the insns array, in 2 byte code units. 0 if there is no code item.
uint32_t insns_size_in_code_units_ = 0;
// Pointer to the instructions, null if there is no code item.
const uint16_t* insns_ = 0;
};
// Abstracts accesses to code item fields other than debug info for CompactDexFile and
// StandardDexFile.
class CodeItemDataAccessor : public CodeItemInstructionAccessor {
public:
ALWAYS_INLINE CodeItemDataAccessor(const DexFile& dex_file, const DexFile::CodeItem* code_item);
ALWAYS_INLINE explicit CodeItemDataAccessor(ArtMethod* method);
uint16_t RegistersSize() const {
return registers_size_;
}
uint16_t InsSize() const {
return ins_size_;
}
uint16_t OutsSize() const {
return outs_size_;
}
uint16_t TriesSize() const {
return tries_size_;
}
IterationRange<const DexFile::TryItem*> TryItems() const;
const uint8_t* GetCatchHandlerData(size_t offset = 0) const;
const DexFile::TryItem* FindTryItem(uint32_t try_dex_pc) const;
inline const void* CodeItemDataEnd() const;
protected:
CodeItemDataAccessor() = default;
ALWAYS_INLINE void Init(const CompactDexFile::CodeItem& code_item);
ALWAYS_INLINE void Init(const StandardDexFile::CodeItem& code_item);
ALWAYS_INLINE void Init(const DexFile& dex_file, const DexFile::CodeItem* code_item);
private:
// Fields mirrored from the dex/cdex code item.
uint16_t registers_size_;
uint16_t ins_size_;
uint16_t outs_size_;
uint16_t tries_size_;
};
// Abstract accesses to code item data including debug info offset. More heavy weight than the other
// helpers.
class CodeItemDebugInfoAccessor : public CodeItemDataAccessor {
public:
CodeItemDebugInfoAccessor() = default;
// Initialize with an existing offset.
ALWAYS_INLINE CodeItemDebugInfoAccessor(const DexFile& dex_file,
const DexFile::CodeItem* code_item,
uint32_t dex_method_index) {
Init(dex_file, code_item, dex_method_index);
}
ALWAYS_INLINE void Init(const DexFile& dex_file,
const DexFile::CodeItem* code_item,
uint32_t dex_method_index);
ALWAYS_INLINE explicit CodeItemDebugInfoAccessor(ArtMethod* method);
uint32_t DebugInfoOffset() const {
return debug_info_offset_;
}
template<typename NewLocalCallback>
bool DecodeDebugLocalInfo(bool is_static,
uint32_t method_idx,
NewLocalCallback new_local,
void* context) const;
protected:
ALWAYS_INLINE void Init(const CompactDexFile::CodeItem& code_item, uint32_t dex_method_index);
ALWAYS_INLINE void Init(const StandardDexFile::CodeItem& code_item);
private:
const DexFile* dex_file_ = nullptr;
uint32_t debug_info_offset_ = 0u;
};
} // namespace art
#endif // ART_RUNTIME_DEX_CODE_ITEM_ACCESSORS_H_
|
