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
205
206
207
208
209
210
|
//===-- DWARFCompileUnit.h --------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef SymbolFileDWARF_DWARFCompileUnit_h_
#define SymbolFileDWARF_DWARFCompileUnit_h_
#include "DWARFDebugInfoEntry.h"
#include "SymbolFileDWARF.h"
class NameToDIE;
class DWARFCompileUnit
{
public:
enum Producer
{
eProducerInvalid = 0,
eProducerClang,
eProducerGCC,
eProducerLLVMGCC,
eProcucerOther
};
DWARFCompileUnit(SymbolFileDWARF* dwarf2Data);
bool Extract(const lldb_private::DataExtractor &debug_info, lldb::offset_t *offset_ptr);
dw_offset_t Extract(lldb::offset_t offset, const lldb_private::DataExtractor& debug_info_data, const DWARFAbbreviationDeclarationSet* abbrevs);
size_t ExtractDIEsIfNeeded (bool cu_die_only);
bool LookupAddress(
const dw_addr_t address,
DWARFDebugInfoEntry** function_die,
DWARFDebugInfoEntry** block_die);
size_t AppendDIEsWithTag (const dw_tag_t tag, DWARFDIECollection& matching_dies, uint32_t depth = UINT32_MAX) const;
void Clear();
bool Verify(lldb_private::Stream *s) const;
void Dump(lldb_private::Stream *s) const;
dw_offset_t GetOffset() const { return m_offset; }
uint32_t Size() const { return 11; /* Size in bytes of the compile unit header */ }
bool ContainsDIEOffset(dw_offset_t die_offset) const { return die_offset >= GetFirstDIEOffset() && die_offset < GetNextCompileUnitOffset(); }
dw_offset_t GetFirstDIEOffset() const { return m_offset + Size(); }
dw_offset_t GetNextCompileUnitOffset() const { return m_offset + m_length + 4; }
size_t GetDebugInfoSize() const { return m_length + 4 - Size(); /* Size in bytes of the .debug_info data associated with this compile unit. */ }
uint32_t GetLength() const { return m_length; }
uint16_t GetVersion() const { return m_version; }
const DWARFAbbreviationDeclarationSet* GetAbbreviations() const { return m_abbrevs; }
dw_offset_t GetAbbrevOffset() const;
uint8_t GetAddressByteSize() const { return m_addr_size; }
dw_addr_t GetBaseAddress() const { return m_base_addr; }
void ClearDIEs(bool keep_compile_unit_die);
void BuildAddressRangeTable (SymbolFileDWARF* dwarf2Data,
DWARFDebugAranges* debug_aranges,
bool clear_dies_if_already_not_parsed);
void
SetBaseAddress(dw_addr_t base_addr)
{
m_base_addr = base_addr;
}
const DWARFDebugInfoEntry*
GetCompileUnitDIEOnly()
{
ExtractDIEsIfNeeded (true);
if (m_die_array.empty())
return NULL;
return &m_die_array[0];
}
const DWARFDebugInfoEntry*
DIE()
{
ExtractDIEsIfNeeded (false);
if (m_die_array.empty())
return NULL;
return &m_die_array[0];
}
void
AddDIE (DWARFDebugInfoEntry& die)
{
// The average bytes per DIE entry has been seen to be
// around 14-20 so lets pre-reserve half of that since
// we are now stripping the NULL tags.
// Only reserve the memory if we are adding children of
// the main compile unit DIE. The compile unit DIE is always
// the first entry, so if our size is 1, then we are adding
// the first compile unit child DIE and should reserve
// the memory.
if (m_die_array.empty())
m_die_array.reserve(GetDebugInfoSize() / 24);
m_die_array.push_back(die);
}
bool
HasDIEsParsed () const
{
return m_die_array.size() > 1;
}
DWARFDebugInfoEntry*
GetDIEAtIndexUnchecked (uint32_t idx)
{
return &m_die_array[idx];
}
DWARFDebugInfoEntry*
GetDIEPtr (dw_offset_t die_offset);
const DWARFDebugInfoEntry*
GetDIEPtrContainingOffset (dw_offset_t die_offset);
static uint8_t
GetAddressByteSize(const DWARFCompileUnit* cu);
static uint8_t
GetDefaultAddressSize();
static void
SetDefaultAddressSize(uint8_t addr_size);
void *
GetUserData() const
{
return m_user_data;
}
void
SetUserData(void *d)
{
m_user_data = d;
}
bool
Supports_DW_AT_APPLE_objc_complete_type ();
bool
DW_AT_decl_file_attributes_are_invalid();
bool
Supports_unnamed_objc_bitfields ();
// void
// AddGlobalDIEByIndex (uint32_t die_idx);
//
// void
// AddGlobal (const DWARFDebugInfoEntry* die);
//
void
Index (const uint32_t cu_idx,
NameToDIE& func_basenames,
NameToDIE& func_fullnames,
NameToDIE& func_methods,
NameToDIE& func_selectors,
NameToDIE& objc_class_selectors,
NameToDIE& globals,
NameToDIE& types,
NameToDIE& namespaces);
const DWARFDebugAranges &
GetFunctionAranges ();
SymbolFileDWARF*
GetSymbolFileDWARF () const
{
return m_dwarf2Data;
}
Producer
GetProducer ();
uint32_t
GetProducerVersionMajor();
uint32_t
GetProducerVersionMinor();
uint32_t
GetProducerVersionUpdate();
protected:
SymbolFileDWARF* m_dwarf2Data;
const DWARFAbbreviationDeclarationSet *m_abbrevs;
void * m_user_data;
DWARFDebugInfoEntry::collection m_die_array; // The compile unit debug information entry item
std::unique_ptr<DWARFDebugAranges> m_func_aranges_ap; // A table similar to the .debug_aranges table, but this one points to the exact DW_TAG_subprogram DIEs
dw_addr_t m_base_addr;
dw_offset_t m_offset;
uint32_t m_length;
uint16_t m_version;
uint8_t m_addr_size;
Producer m_producer;
uint32_t m_producer_version_major;
uint32_t m_producer_version_minor;
uint32_t m_producer_version_update;
void
ParseProducerInfo ();
private:
DISALLOW_COPY_AND_ASSIGN (DWARFCompileUnit);
};
#endif // SymbolFileDWARF_DWARFCompileUnit_h_
|
