blob: 92dc3c7412d12bef47b0db05254d3f0f785739e4 (
plain)
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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/*
* Copyright 2011, 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 ELF_SYMBOL_H
#define ELF_SYMBOL_H
#include "ELFTypes.h"
#include "ELF.h"
#include <llvm/ADT/OwningPtr.h>
#include <string>
#include <algorithm>
#ifdef MACOSX
#include <malloc/malloc.h>
#else
#include <malloc.h>
#endif
#include <stdint.h>
#include <stdlib.h>
class ELFSymbolHelperMixin {
protected:
static char const *getTypeStr(uint8_t);
static char const *getBindingAttributeStr(uint8_t);
static char const *getVisibilityStr(uint8_t);
};
template <unsigned Bitwidth>
class ELFSymbol_CRTP : private ELFSymbolHelperMixin {
public:
ELF_TYPE_INTRO_TO_TEMPLATE_SCOPE(Bitwidth);
protected:
ELFObject<Bitwidth> const *owner;
size_t index;
word_t st_name;
byte_t st_info;
byte_t st_other;
half_t st_shndx;
addr_t st_value;
symsize_t st_size;
mutable void *my_addr;
protected:
ELFSymbol_CRTP() { my_addr = 0; }
~ELFSymbol_CRTP() {
#if 0
if (my_addr != 0 &&
getType() == STT_OBJECT &&
getSectionIndex() == SHN_COMMON) {
std::free(my_addr);
}
#endif
}
public:
size_t getIndex() const {
return index;
}
word_t getNameIndex() const {
return st_name;
}
char const *getName() const;
// I don't want to include elf.h in .h file, so define those macro by ourself.
#define ELF_ST_BIND(i) ((i)>>4)
#define ELF_ST_TYPE(i) ((i)&0xf)
#define ELF_ST_INFO(b,t) (((b)<<4)+((t)&0xf))
byte_t getType() const {
return ELF_ST_TYPE(st_info);
}
byte_t getBindingAttribute() const {
return ELF_ST_BIND(st_info);
}
#undef ELF_ST_BIND
#undef ELF_ST_TYPE
#undef ELF_ST_INFO
#define ELF_ST_VISIBILITY(o) ((o)&0x3)
byte_t getVisibility() const {
return ELF_ST_VISIBILITY(st_other);
}
#undef ELF_ST_VISIBILITY
half_t getSectionIndex() const {
return st_shndx;
}
addr_t getValue() const {
return st_value;
}
symsize_t getSize() const {
return st_size;
}
void *getAddress(int machine, bool autoAlloc = true) const;
void setAddress(void *addr) {
my_addr = addr;
}
bool isValid() const {
// FIXME: Should check the correctness of the section header.
return true;
}
bool isConcreteFunc() const {
return getType() == STT_FUNC;
}
bool isExternFunc() const {
return getType() == STT_NOTYPE;
}
template <typename Archiver>
static ELFSymbolTy *
read(Archiver &AR, ELFObject<Bitwidth> const *owner, size_t index = 0);
void print(bool shouldPrintHeader = false) const;
private:
ELFSymbolTy *concrete() {
return static_cast<ELFSymbolTy *>(this);
}
ELFSymbolTy const *concrete() const {
return static_cast<ELFSymbolTy const *>(this);
}
};
template <>
class ELFSymbol<32> : public ELFSymbol_CRTP<32> {
friend class ELFSymbol_CRTP<32>;
private:
ELFSymbol() {
}
template <typename Archiver>
bool serialize(Archiver &AR) {
AR.prologue(TypeTraits<ELFSymbol>::size);
AR & st_name;
AR & st_value;
AR & st_size;
AR & st_info;
AR & st_other;
AR & st_shndx;
AR.epilogue(TypeTraits<ELFSymbol>::size);
return AR;
}
};
template <>
class ELFSymbol<64> : public ELFSymbol_CRTP<64> {
friend class ELFSymbol_CRTP<64>;
private:
ELFSymbol() {
}
template <typename Archiver>
bool serialize(Archiver &AR) {
AR.prologue(TypeTraits<ELFSymbol>::size);
AR & st_name;
AR & st_info;
AR & st_other;
AR & st_shndx;
AR & st_value;
AR & st_size;
AR.epilogue(TypeTraits<ELFSymbol>::size);
return AR;
}
};
#include "impl/ELFSymbol.hxx"
#endif // ELF_SYMBOL_H
|
