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
|
//===-- PDBContext.cpp ------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===/
#include "llvm/DebugInfo/PDB/PDBContext.h"
#include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
#include "llvm/DebugInfo/PDB/IPDBLineNumber.h"
#include "llvm/DebugInfo/PDB/IPDBSourceFile.h"
#include "llvm/DebugInfo/PDB/PDBSymbol.h"
#include "llvm/DebugInfo/PDB/PDBSymbolFunc.h"
#include "llvm/DebugInfo/PDB/PDBSymbolData.h"
#include "llvm/DebugInfo/PDB/PDBSymbolPublicSymbol.h"
#include "llvm/Object/COFF.h"
using namespace llvm;
using namespace llvm::object;
PDBContext::PDBContext(const COFFObjectFile &Object,
std::unique_ptr<IPDBSession> PDBSession,
bool RelativeAddress)
: DIContext(CK_PDB), Session(std::move(PDBSession)) {
if (!RelativeAddress) {
uint64_t ImageBase = 0;
if (Object.is64()) {
const pe32plus_header *Header = nullptr;
Object.getPE32PlusHeader(Header);
if (Header)
ImageBase = Header->ImageBase;
} else {
const pe32_header *Header = nullptr;
Object.getPE32Header(Header);
if (Header)
ImageBase = static_cast<uint64_t>(Header->ImageBase);
}
Session->setLoadAddress(ImageBase);
}
}
void PDBContext::dump(raw_ostream &OS, DIDumpType DumpType) {}
DILineInfo PDBContext::getLineInfoForAddress(uint64_t Address,
DILineInfoSpecifier Specifier) {
DILineInfo Result;
Result.FunctionName = getFunctionName(Address, Specifier.FNKind);
uint32_t Length = 1;
std::unique_ptr<PDBSymbol> Symbol =
Session->findSymbolByAddress(Address, PDB_SymType::None);
if (auto Func = dyn_cast_or_null<PDBSymbolFunc>(Symbol.get())) {
Length = Func->getLength();
} else if (auto Data = dyn_cast_or_null<PDBSymbolData>(Symbol.get())) {
Length = Data->getLength();
}
// If we couldn't find a symbol, then just assume 1 byte, so that we get
// only the line number of the first instruction.
auto LineNumbers = Session->findLineNumbersByAddress(Address, Length);
if (!LineNumbers || LineNumbers->getChildCount() == 0)
return Result;
auto LineInfo = LineNumbers->getNext();
assert(LineInfo);
auto SourceFile = Session->getSourceFileById(LineInfo->getSourceFileId());
if (SourceFile &&
Specifier.FLIKind != DILineInfoSpecifier::FileLineInfoKind::None)
Result.FileName = SourceFile->getFileName();
Result.Column = LineInfo->getColumnNumber();
Result.Line = LineInfo->getLineNumber();
return Result;
}
DILineInfoTable
PDBContext::getLineInfoForAddressRange(uint64_t Address, uint64_t Size,
DILineInfoSpecifier Specifier) {
if (Size == 0)
return DILineInfoTable();
DILineInfoTable Table;
auto LineNumbers = Session->findLineNumbersByAddress(Address, Size);
if (!LineNumbers || LineNumbers->getChildCount() == 0)
return Table;
while (auto LineInfo = LineNumbers->getNext()) {
DILineInfo LineEntry =
getLineInfoForAddress(LineInfo->getVirtualAddress(), Specifier);
Table.push_back(std::make_pair(LineInfo->getVirtualAddress(), LineEntry));
}
return Table;
}
DIInliningInfo
PDBContext::getInliningInfoForAddress(uint64_t Address,
DILineInfoSpecifier Specifier) {
DIInliningInfo InlineInfo;
DILineInfo Frame = getLineInfoForAddress(Address, Specifier);
InlineInfo.addFrame(Frame);
return InlineInfo;
}
std::string PDBContext::getFunctionName(uint64_t Address,
DINameKind NameKind) const {
if (NameKind == DINameKind::None)
return std::string();
if (NameKind == DINameKind::LinkageName) {
// It is not possible to get the mangled linkage name through a
// PDBSymbolFunc. For that we have to specifically request a
// PDBSymbolPublicSymbol.
auto PublicSym =
Session->findSymbolByAddress(Address, PDB_SymType::PublicSymbol);
if (auto PS = dyn_cast_or_null<PDBSymbolPublicSymbol>(PublicSym.get()))
return PS->getName();
}
auto FuncSymbol =
Session->findSymbolByAddress(Address, PDB_SymType::Function);
// This could happen either if there was no public symbol (e.g. not
// external) or the user requested the short name. In the former case,
// although they technically requested the linkage name, if the linkage
// name is not available we fallback to at least returning a non-empty
// string.
if (auto Func = dyn_cast_or_null<PDBSymbolFunc>(FuncSymbol.get()))
return Func->getName();
return std::string();
}
|
