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
|
//===-- NameToDIE.cpp -----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "NameToDIE.h"
#include "DWARFUnit.h"
#include "lldb/Core/DataFileCache.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/DataEncoder.h"
#include "lldb/Utility/DataExtractor.h"
#include "lldb/Utility/RegularExpression.h"
#include "lldb/Utility/Stream.h"
#include "lldb/Utility/StreamString.h"
using namespace lldb;
using namespace lldb_private;
void NameToDIE::Finalize() {
m_map.Sort(std::less<DIERef>());
m_map.SizeToFit();
}
void NameToDIE::Insert(ConstString name, const DIERef &die_ref) {
m_map.Append(name, die_ref);
}
bool NameToDIE::Find(ConstString name,
llvm::function_ref<bool(DIERef ref)> callback) const {
for (const auto &entry : m_map.equal_range(name))
if (!callback(entry.value))
return false;
return true;
}
bool NameToDIE::Find(const RegularExpression ®ex,
llvm::function_ref<bool(DIERef ref)> callback) const {
for (const auto &entry : m_map)
if (regex.Execute(entry.cstring.GetCString())) {
if (!callback(entry.value))
return false;
}
return true;
}
void NameToDIE::FindAllEntriesForUnit(
DWARFUnit &s_unit, llvm::function_ref<bool(DIERef ref)> callback) const {
lldbassert(!s_unit.GetSymbolFileDWARF().GetDwoNum());
const DWARFUnit &ns_unit = s_unit.GetNonSkeletonUnit();
const uint32_t size = m_map.GetSize();
for (uint32_t i = 0; i < size; ++i) {
const DIERef &die_ref = m_map.GetValueAtIndexUnchecked(i);
if (ns_unit.GetSymbolFileDWARF().GetDwoNum() == die_ref.dwo_num() &&
ns_unit.GetDebugSection() == die_ref.section() &&
ns_unit.GetOffset() <= die_ref.die_offset() &&
die_ref.die_offset() < ns_unit.GetNextUnitOffset()) {
if (!callback(die_ref))
return;
}
}
}
void NameToDIE::Dump(Stream *s) {
const uint32_t size = m_map.GetSize();
for (uint32_t i = 0; i < size; ++i) {
s->Format("{0} \"{1}\"\n", m_map.GetValueAtIndexUnchecked(i),
m_map.GetCStringAtIndexUnchecked(i));
}
}
void NameToDIE::ForEach(
std::function<bool(ConstString name, const DIERef &die_ref)> const
&callback) const {
const uint32_t size = m_map.GetSize();
for (uint32_t i = 0; i < size; ++i) {
if (!callback(m_map.GetCStringAtIndexUnchecked(i),
m_map.GetValueAtIndexUnchecked(i)))
break;
}
}
void NameToDIE::Append(const NameToDIE &other) {
const uint32_t size = other.m_map.GetSize();
for (uint32_t i = 0; i < size; ++i) {
m_map.Append(other.m_map.GetCStringAtIndexUnchecked(i),
other.m_map.GetValueAtIndexUnchecked(i));
}
}
constexpr llvm::StringLiteral kIdentifierNameToDIE("N2DI");
bool NameToDIE::Decode(const DataExtractor &data, lldb::offset_t *offset_ptr,
const StringTableReader &strtab) {
m_map.Clear();
llvm::StringRef identifier((const char *)data.GetData(offset_ptr, 4), 4);
if (identifier != kIdentifierNameToDIE)
return false;
const uint32_t count = data.GetU32(offset_ptr);
for (uint32_t i = 0; i < count; ++i) {
llvm::StringRef str(strtab.Get(data.GetU32(offset_ptr)));
// No empty strings allowed in the name to DIE maps.
if (str.empty())
return false;
if (llvm::Optional<DIERef> die_ref = DIERef::Decode(data, offset_ptr))
m_map.Append(ConstString(str), die_ref.getValue());
else
return false;
}
return true;
}
void NameToDIE::Encode(DataEncoder &encoder, ConstStringTable &strtab) const {
encoder.AppendData(kIdentifierNameToDIE);
encoder.AppendU32(m_map.GetSize());
for (const auto &entry : m_map) {
// Make sure there are no empty strings.
assert((bool)entry.cstring);
encoder.AppendU32(strtab.Add(entry.cstring));
entry.value.Encode(encoder);
}
}
bool NameToDIE::operator==(const NameToDIE &rhs) const {
const size_t size = m_map.GetSize();
if (size != rhs.m_map.GetSize())
return false;
for (size_t i = 0; i < size; ++i) {
if (m_map.GetCStringAtIndex(i) != rhs.m_map.GetCStringAtIndex(i))
return false;
if (m_map.GetValueRefAtIndexUnchecked(i) !=
rhs.m_map.GetValueRefAtIndexUnchecked(i))
return false;
}
return true;
}
|
