1//===- PDBSymbol.cpp - base class for user-facing symbol types --*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/DebugInfo/PDB/PDBSymbol.h"
10#include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
11#include "llvm/DebugInfo/PDB/IPDBLineNumber.h"
12#include "llvm/DebugInfo/PDB/IPDBRawSymbol.h"
13#include "llvm/DebugInfo/PDB/IPDBSession.h"
14#include "llvm/DebugInfo/PDB/PDBExtras.h"
15#include "llvm/DebugInfo/PDB/PDBSymbolAnnotation.h"
16#include "llvm/DebugInfo/PDB/PDBSymbolBlock.h"
17#include "llvm/DebugInfo/PDB/PDBSymbolCompiland.h"
18#include "llvm/DebugInfo/PDB/PDBSymbolCompilandDetails.h"
19#include "llvm/DebugInfo/PDB/PDBSymbolCompilandEnv.h"
20#include "llvm/DebugInfo/PDB/PDBSymbolCustom.h"
21#include "llvm/DebugInfo/PDB/PDBSymbolData.h"
22#include "llvm/DebugInfo/PDB/PDBSymbolExe.h"
23#include "llvm/DebugInfo/PDB/PDBSymbolFunc.h"
24#include "llvm/DebugInfo/PDB/PDBSymbolFuncDebugEnd.h"
25#include "llvm/DebugInfo/PDB/PDBSymbolFuncDebugStart.h"
26#include "llvm/DebugInfo/PDB/PDBSymbolLabel.h"
27#include "llvm/DebugInfo/PDB/PDBSymbolPublicSymbol.h"
28#include "llvm/DebugInfo/PDB/PDBSymbolThunk.h"
29#include "llvm/DebugInfo/PDB/PDBSymbolTypeArray.h"
30#include "llvm/DebugInfo/PDB/PDBSymbolTypeBaseClass.h"
31#include "llvm/DebugInfo/PDB/PDBSymbolTypeBuiltin.h"
32#include "llvm/DebugInfo/PDB/PDBSymbolTypeCustom.h"
33#include "llvm/DebugInfo/PDB/PDBSymbolTypeDimension.h"
34#include "llvm/DebugInfo/PDB/PDBSymbolTypeEnum.h"
35#include "llvm/DebugInfo/PDB/PDBSymbolTypeFriend.h"
36#include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionArg.h"
37#include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionSig.h"
38#include "llvm/DebugInfo/PDB/PDBSymbolTypeManaged.h"
39#include "llvm/DebugInfo/PDB/PDBSymbolTypePointer.h"
40#include "llvm/DebugInfo/PDB/PDBSymbolTypeTypedef.h"
41#include "llvm/DebugInfo/PDB/PDBSymbolTypeUDT.h"
42#include "llvm/DebugInfo/PDB/PDBSymbolTypeVTable.h"
43#include "llvm/DebugInfo/PDB/PDBSymbolTypeVTableShape.h"
44#include "llvm/DebugInfo/PDB/PDBSymbolUnknown.h"
45#include "llvm/DebugInfo/PDB/PDBSymbolUsingNamespace.h"
46#include "llvm/DebugInfo/PDB/PDBTypes.h"
47#include <memory>
48
49using namespace llvm;
50using namespace llvm::pdb;
51
52PDBSymbol::PDBSymbol(const IPDBSession &PDBSession) : Session(PDBSession) {}
53
54PDBSymbol::PDBSymbol(PDBSymbol &&Other)
55 : Session(Other.Session), RawSymbol(std::move(Other.RawSymbol)) {}
56
57PDBSymbol::~PDBSymbol() = default;
58
59#define FACTORY_SYMTAG_CASE(Tag, Type) \
60 case PDB_SymType::Tag: \
61 return std::unique_ptr<PDBSymbol>(new Type(PDBSession));
62
63std::unique_ptr<PDBSymbol>
64PDBSymbol::createSymbol(const IPDBSession &PDBSession, PDB_SymType Tag) {
65 switch (Tag) {
66 FACTORY_SYMTAG_CASE(Exe, PDBSymbolExe)
67 FACTORY_SYMTAG_CASE(Compiland, PDBSymbolCompiland)
68 FACTORY_SYMTAG_CASE(CompilandDetails, PDBSymbolCompilandDetails)
69 FACTORY_SYMTAG_CASE(CompilandEnv, PDBSymbolCompilandEnv)
70 FACTORY_SYMTAG_CASE(Function, PDBSymbolFunc)
71 FACTORY_SYMTAG_CASE(Block, PDBSymbolBlock)
72 FACTORY_SYMTAG_CASE(Data, PDBSymbolData)
73 FACTORY_SYMTAG_CASE(Annotation, PDBSymbolAnnotation)
74 FACTORY_SYMTAG_CASE(Label, PDBSymbolLabel)
75 FACTORY_SYMTAG_CASE(PublicSymbol, PDBSymbolPublicSymbol)
76 FACTORY_SYMTAG_CASE(UDT, PDBSymbolTypeUDT)
77 FACTORY_SYMTAG_CASE(Enum, PDBSymbolTypeEnum)
78 FACTORY_SYMTAG_CASE(FunctionSig, PDBSymbolTypeFunctionSig)
79 FACTORY_SYMTAG_CASE(PointerType, PDBSymbolTypePointer)
80 FACTORY_SYMTAG_CASE(ArrayType, PDBSymbolTypeArray)
81 FACTORY_SYMTAG_CASE(BuiltinType, PDBSymbolTypeBuiltin)
82 FACTORY_SYMTAG_CASE(Typedef, PDBSymbolTypeTypedef)
83 FACTORY_SYMTAG_CASE(BaseClass, PDBSymbolTypeBaseClass)
84 FACTORY_SYMTAG_CASE(Friend, PDBSymbolTypeFriend)
85 FACTORY_SYMTAG_CASE(FunctionArg, PDBSymbolTypeFunctionArg)
86 FACTORY_SYMTAG_CASE(FuncDebugStart, PDBSymbolFuncDebugStart)
87 FACTORY_SYMTAG_CASE(FuncDebugEnd, PDBSymbolFuncDebugEnd)
88 FACTORY_SYMTAG_CASE(UsingNamespace, PDBSymbolUsingNamespace)
89 FACTORY_SYMTAG_CASE(VTableShape, PDBSymbolTypeVTableShape)
90 FACTORY_SYMTAG_CASE(VTable, PDBSymbolTypeVTable)
91 FACTORY_SYMTAG_CASE(Custom, PDBSymbolCustom)
92 FACTORY_SYMTAG_CASE(Thunk, PDBSymbolThunk)
93 FACTORY_SYMTAG_CASE(CustomType, PDBSymbolTypeCustom)
94 FACTORY_SYMTAG_CASE(ManagedType, PDBSymbolTypeManaged)
95 FACTORY_SYMTAG_CASE(Dimension, PDBSymbolTypeDimension)
96 default:
97 return std::unique_ptr<PDBSymbol>(new PDBSymbolUnknown(PDBSession));
98 }
99}
100
101std::unique_ptr<PDBSymbol>
102PDBSymbol::create(const IPDBSession &PDBSession,
103 std::unique_ptr<IPDBRawSymbol> RawSymbol) {
104 auto SymbolPtr = createSymbol(PDBSession, Tag: RawSymbol->getSymTag());
105 SymbolPtr->RawSymbol = RawSymbol.get();
106 SymbolPtr->OwnedRawSymbol = std::move(RawSymbol);
107 return SymbolPtr;
108}
109
110std::unique_ptr<PDBSymbol> PDBSymbol::create(const IPDBSession &PDBSession,
111 IPDBRawSymbol &RawSymbol) {
112 auto SymbolPtr = createSymbol(PDBSession, Tag: RawSymbol.getSymTag());
113 SymbolPtr->RawSymbol = &RawSymbol;
114 return SymbolPtr;
115}
116
117void PDBSymbol::defaultDump(raw_ostream &OS, int Indent,
118 PdbSymbolIdField ShowFlags,
119 PdbSymbolIdField RecurseFlags) const {
120 RawSymbol->dump(OS, Indent, ShowIdFields: ShowFlags, RecurseIdFields: RecurseFlags);
121}
122
123void PDBSymbol::dumpProperties() const {
124 outs() << "\n";
125 defaultDump(OS&: outs(), Indent: 0, ShowFlags: PdbSymbolIdField::All, RecurseFlags: PdbSymbolIdField::None);
126 outs().flush();
127}
128
129void PDBSymbol::dumpChildStats() const {
130 TagStats Stats;
131 getChildStats(Stats);
132 outs() << "\n";
133 for (auto &Stat : Stats) {
134 outs() << Stat.first << ": " << Stat.second << "\n";
135 }
136 outs().flush();
137}
138
139PDB_SymType PDBSymbol::getSymTag() const { return RawSymbol->getSymTag(); }
140uint32_t PDBSymbol::getSymIndexId() const { return RawSymbol->getSymIndexId(); }
141
142std::unique_ptr<IPDBEnumSymbols> PDBSymbol::findAllChildren() const {
143 return findAllChildren(Type: PDB_SymType::None);
144}
145
146std::unique_ptr<IPDBEnumSymbols>
147PDBSymbol::findAllChildren(PDB_SymType Type) const {
148 return RawSymbol->findChildren(Type);
149}
150
151std::unique_ptr<IPDBEnumSymbols>
152PDBSymbol::findChildren(PDB_SymType Type, StringRef Name,
153 PDB_NameSearchFlags Flags) const {
154 return RawSymbol->findChildren(Type, Name, Flags);
155}
156
157std::unique_ptr<IPDBEnumSymbols>
158PDBSymbol::findChildrenByRVA(PDB_SymType Type, StringRef Name,
159 PDB_NameSearchFlags Flags, uint32_t RVA) const {
160 return RawSymbol->findChildrenByRVA(Type, Name, Flags, RVA);
161}
162
163std::unique_ptr<IPDBEnumSymbols>
164PDBSymbol::findInlineFramesByVA(uint64_t VA) const {
165 return RawSymbol->findInlineFramesByVA(VA);
166}
167
168std::unique_ptr<IPDBEnumSymbols>
169PDBSymbol::findInlineFramesByRVA(uint32_t RVA) const {
170 return RawSymbol->findInlineFramesByRVA(RVA);
171}
172
173std::unique_ptr<IPDBEnumLineNumbers>
174PDBSymbol::findInlineeLinesByVA(uint64_t VA, uint32_t Length) const {
175 return RawSymbol->findInlineeLinesByVA(VA, Length);
176}
177
178std::unique_ptr<IPDBEnumLineNumbers>
179PDBSymbol::findInlineeLinesByRVA(uint32_t RVA, uint32_t Length) const {
180 return RawSymbol->findInlineeLinesByRVA(RVA, Length);
181}
182
183std::string PDBSymbol::getName() const { return RawSymbol->getName(); }
184
185std::unique_ptr<IPDBEnumSymbols>
186PDBSymbol::getChildStats(TagStats &Stats) const {
187 std::unique_ptr<IPDBEnumSymbols> Result(findAllChildren());
188 if (!Result)
189 return nullptr;
190 Stats.clear();
191 while (auto Child = Result->getNext()) {
192 ++Stats[Child->getSymTag()];
193 }
194 Result->reset();
195 return Result;
196}
197
198std::unique_ptr<PDBSymbol> PDBSymbol::getSymbolByIdHelper(uint32_t Id) const {
199 return Session.getSymbolById(SymbolId: Id);
200}
201
202void llvm::pdb::dumpSymbolIdField(raw_ostream &OS, StringRef Name,
203 SymIndexId Value, int Indent,
204 const IPDBSession &Session,
205 PdbSymbolIdField FieldId,
206 PdbSymbolIdField ShowFlags,
207 PdbSymbolIdField RecurseFlags) {
208 if ((FieldId & ShowFlags) == PdbSymbolIdField::None)
209 return;
210
211 OS << "\n";
212 OS.indent(NumSpaces: Indent);
213 OS << Name << ": " << Value;
214 // Don't recurse unless the user requested it.
215 if ((FieldId & RecurseFlags) == PdbSymbolIdField::None)
216 return;
217 // And obviously don't recurse on the symbol itself.
218 if (FieldId == PdbSymbolIdField::SymIndexId)
219 return;
220
221 auto Child = Session.getSymbolById(SymbolId: Value);
222
223 // It could have been a placeholder symbol for a type we don't yet support,
224 // so just exit in that case.
225 if (!Child)
226 return;
227
228 // Don't recurse more than once, so pass PdbSymbolIdField::None) for the
229 // recurse flags.
230 Child->defaultDump(OS, Indent: Indent + 2, ShowFlags, RecurseFlags: PdbSymbolIdField::None);
231}
232

source code of llvm/lib/DebugInfo/PDB/PDBSymbol.cpp