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
170
171
172
173
|
/*
* Copyright (C) 2015 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.
*/
#ifndef ART_COMPILER_DWARF_WRITER_H_
#define ART_COMPILER_DWARF_WRITER_H_
#include <vector>
#include "leb128.h"
#include "base/logging.h"
#include "utils.h"
namespace art {
namespace dwarf {
// The base class for all DWARF writers.
template<typename Allocator = std::allocator<uint8_t>>
class Writer {
public:
void PushUint8(int value) {
DCHECK_GE(value, 0);
DCHECK_LE(value, UINT8_MAX);
data_->push_back(value & 0xff);
}
void PushUint16(int value) {
DCHECK_GE(value, 0);
DCHECK_LE(value, UINT16_MAX);
data_->push_back((value >> 0) & 0xff);
data_->push_back((value >> 8) & 0xff);
}
void PushUint32(uint32_t value) {
data_->push_back((value >> 0) & 0xff);
data_->push_back((value >> 8) & 0xff);
data_->push_back((value >> 16) & 0xff);
data_->push_back((value >> 24) & 0xff);
}
void PushUint32(int value) {
DCHECK_GE(value, 0);
PushUint32(static_cast<uint32_t>(value));
}
void PushUint32(uint64_t value) {
DCHECK_LE(value, UINT32_MAX);
PushUint32(static_cast<uint32_t>(value));
}
void PushUint64(uint64_t value) {
data_->push_back((value >> 0) & 0xff);
data_->push_back((value >> 8) & 0xff);
data_->push_back((value >> 16) & 0xff);
data_->push_back((value >> 24) & 0xff);
data_->push_back((value >> 32) & 0xff);
data_->push_back((value >> 40) & 0xff);
data_->push_back((value >> 48) & 0xff);
data_->push_back((value >> 56) & 0xff);
}
void PushInt8(int value) {
DCHECK_GE(value, INT8_MIN);
DCHECK_LE(value, INT8_MAX);
PushUint8(static_cast<uint8_t>(value));
}
void PushInt16(int value) {
DCHECK_GE(value, INT16_MIN);
DCHECK_LE(value, INT16_MAX);
PushUint16(static_cast<uint16_t>(value));
}
void PushInt32(int value) {
PushUint32(static_cast<uint32_t>(value));
}
void PushInt64(int64_t value) {
PushUint64(static_cast<uint64_t>(value));
}
// Variable-length encoders.
void PushUleb128(uint32_t value) {
EncodeUnsignedLeb128(data_, value);
}
void PushUleb128(int value) {
DCHECK_GE(value, 0);
EncodeUnsignedLeb128(data_, value);
}
void PushSleb128(int value) {
EncodeSignedLeb128(data_, value);
}
// Miscellaneous functions.
void PushString(const char* value) {
data_->insert(data_->end(), value, value + strlen(value) + 1);
}
void PushData(const void* ptr, size_t size) {
const char* p = reinterpret_cast<const char*>(ptr);
data_->insert(data_->end(), p, p + size);
}
template<typename Allocator2>
void PushData(const std::vector<uint8_t, Allocator2>* buffer) {
data_->insert(data_->end(), buffer->begin(), buffer->end());
}
void UpdateUint32(size_t offset, uint32_t value) {
DCHECK_LT(offset + 3, data_->size());
(*data_)[offset + 0] = (value >> 0) & 0xFF;
(*data_)[offset + 1] = (value >> 8) & 0xFF;
(*data_)[offset + 2] = (value >> 16) & 0xFF;
(*data_)[offset + 3] = (value >> 24) & 0xFF;
}
void UpdateUint64(size_t offset, uint64_t value) {
DCHECK_LT(offset + 7, data_->size());
(*data_)[offset + 0] = (value >> 0) & 0xFF;
(*data_)[offset + 1] = (value >> 8) & 0xFF;
(*data_)[offset + 2] = (value >> 16) & 0xFF;
(*data_)[offset + 3] = (value >> 24) & 0xFF;
(*data_)[offset + 4] = (value >> 32) & 0xFF;
(*data_)[offset + 5] = (value >> 40) & 0xFF;
(*data_)[offset + 6] = (value >> 48) & 0xFF;
(*data_)[offset + 7] = (value >> 56) & 0xFF;
}
void UpdateUleb128(size_t offset, uint32_t value) {
DCHECK_LE(offset + UnsignedLeb128Size(value), data_->size());
UpdateUnsignedLeb128(data_->data() + offset, value);
}
void Pop() {
return data_->pop_back();
}
void Pad(int alignment) {
DCHECK_NE(alignment, 0);
data_->resize(RoundUp(data_->size(), alignment), 0);
}
const std::vector<uint8_t, Allocator>* data() const {
return data_;
}
explicit Writer(std::vector<uint8_t, Allocator>* buffer) : data_(buffer) { }
private:
std::vector<uint8_t, Allocator>* data_;
DISALLOW_COPY_AND_ASSIGN(Writer);
};
} // namespace dwarf
} // namespace art
#endif // ART_COMPILER_DWARF_WRITER_H_
|
