1 | //===- NativeTypePointer.cpp - info about pointer type ----------*- 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/Native/NativeTypePointer.h" |
10 | #include "llvm/DebugInfo/PDB/Native/NativeSession.h" |
11 | |
12 | #include "llvm/DebugInfo/CodeView/CodeView.h" |
13 | |
14 | #include <cassert> |
15 | |
16 | using namespace llvm; |
17 | using namespace llvm::codeview; |
18 | using namespace llvm::pdb; |
19 | |
20 | NativeTypePointer::NativeTypePointer(NativeSession &Session, SymIndexId Id, |
21 | codeview::TypeIndex TI) |
22 | : NativeRawSymbol(Session, PDB_SymType::PointerType, Id), TI(TI) { |
23 | assert(TI.isSimple()); |
24 | assert(TI.getSimpleMode() != SimpleTypeMode::Direct); |
25 | } |
26 | |
27 | NativeTypePointer::NativeTypePointer(NativeSession &Session, SymIndexId Id, |
28 | codeview::TypeIndex TI, |
29 | codeview::PointerRecord Record) |
30 | : NativeRawSymbol(Session, PDB_SymType::PointerType, Id), TI(TI), |
31 | Record(std::move(Record)) {} |
32 | |
33 | NativeTypePointer::~NativeTypePointer() = default; |
34 | |
35 | void NativeTypePointer::dump(raw_ostream &OS, int Indent, |
36 | PdbSymbolIdField ShowIdFields, |
37 | PdbSymbolIdField RecurseIdFields) const { |
38 | NativeRawSymbol::dump(OS, Indent, ShowIdFields, RecurseIdFields); |
39 | |
40 | if (isMemberPointer()) { |
41 | dumpSymbolIdField(OS, Name: "classParentId" , Value: getClassParentId(), Indent, Session, |
42 | FieldId: PdbSymbolIdField::ClassParent, ShowFlags: ShowIdFields, |
43 | RecurseFlags: RecurseIdFields); |
44 | } |
45 | dumpSymbolIdField(OS, Name: "lexicalParentId" , Value: 0, Indent, Session, |
46 | FieldId: PdbSymbolIdField::LexicalParent, ShowFlags: ShowIdFields, |
47 | RecurseFlags: RecurseIdFields); |
48 | dumpSymbolIdField(OS, Name: "typeId" , Value: getTypeId(), Indent, Session, |
49 | FieldId: PdbSymbolIdField::Type, ShowFlags: ShowIdFields, RecurseFlags: RecurseIdFields); |
50 | dumpSymbolField(OS, Name: "length" , Value: getLength(), Indent); |
51 | dumpSymbolField(OS, Name: "constType" , Value: isConstType(), Indent); |
52 | dumpSymbolField(OS, Name: "isPointerToDataMember" , Value: isPointerToDataMember(), Indent); |
53 | dumpSymbolField(OS, Name: "isPointerToMemberFunction" , Value: isPointerToMemberFunction(), |
54 | Indent); |
55 | dumpSymbolField(OS, Name: "RValueReference" , Value: isRValueReference(), Indent); |
56 | dumpSymbolField(OS, Name: "reference" , Value: isReference(), Indent); |
57 | dumpSymbolField(OS, Name: "restrictedType" , Value: isRestrictedType(), Indent); |
58 | if (isMemberPointer()) { |
59 | if (isSingleInheritance()) |
60 | dumpSymbolField(OS, Name: "isSingleInheritance" , Value: 1, Indent); |
61 | else if (isMultipleInheritance()) |
62 | dumpSymbolField(OS, Name: "isMultipleInheritance" , Value: 1, Indent); |
63 | else if (isVirtualInheritance()) |
64 | dumpSymbolField(OS, Name: "isVirtualInheritance" , Value: 1, Indent); |
65 | } |
66 | dumpSymbolField(OS, Name: "unalignedType" , Value: isUnalignedType(), Indent); |
67 | dumpSymbolField(OS, Name: "volatileType" , Value: isVolatileType(), Indent); |
68 | } |
69 | |
70 | SymIndexId NativeTypePointer::getClassParentId() const { |
71 | if (!isMemberPointer()) |
72 | return 0; |
73 | |
74 | assert(Record); |
75 | const MemberPointerInfo &MPI = Record->getMemberInfo(); |
76 | return Session.getSymbolCache().findSymbolByTypeIndex(TI: MPI.ContainingType); |
77 | } |
78 | |
79 | uint64_t NativeTypePointer::getLength() const { |
80 | if (Record) |
81 | return Record->getSize(); |
82 | |
83 | switch (TI.getSimpleMode()) { |
84 | case SimpleTypeMode::NearPointer: |
85 | case SimpleTypeMode::FarPointer: |
86 | case SimpleTypeMode::HugePointer: |
87 | return 2; |
88 | case SimpleTypeMode::NearPointer32: |
89 | case SimpleTypeMode::FarPointer32: |
90 | return 4; |
91 | case SimpleTypeMode::NearPointer64: |
92 | return 8; |
93 | case SimpleTypeMode::NearPointer128: |
94 | return 16; |
95 | default: |
96 | assert(false && "invalid simple type mode!" ); |
97 | } |
98 | return 0; |
99 | } |
100 | |
101 | SymIndexId NativeTypePointer::getTypeId() const { |
102 | // This is the pointee SymIndexId. |
103 | TypeIndex Referent = Record ? Record->ReferentType : TI.makeDirect(); |
104 | |
105 | return Session.getSymbolCache().findSymbolByTypeIndex(TI: Referent); |
106 | } |
107 | |
108 | bool NativeTypePointer::isReference() const { |
109 | if (!Record) |
110 | return false; |
111 | return Record->getMode() == PointerMode::LValueReference; |
112 | } |
113 | |
114 | bool NativeTypePointer::isRValueReference() const { |
115 | if (!Record) |
116 | return false; |
117 | return Record->getMode() == PointerMode::RValueReference; |
118 | } |
119 | |
120 | bool NativeTypePointer::isPointerToDataMember() const { |
121 | if (!Record) |
122 | return false; |
123 | return Record->getMode() == PointerMode::PointerToDataMember; |
124 | } |
125 | |
126 | bool NativeTypePointer::isPointerToMemberFunction() const { |
127 | if (!Record) |
128 | return false; |
129 | return Record->getMode() == PointerMode::PointerToMemberFunction; |
130 | } |
131 | |
132 | bool NativeTypePointer::isConstType() const { |
133 | if (!Record) |
134 | return false; |
135 | return (Record->getOptions() & PointerOptions::Const) != PointerOptions::None; |
136 | } |
137 | |
138 | bool NativeTypePointer::isRestrictedType() const { |
139 | if (!Record) |
140 | return false; |
141 | return (Record->getOptions() & PointerOptions::Restrict) != |
142 | PointerOptions::None; |
143 | } |
144 | |
145 | bool NativeTypePointer::isVolatileType() const { |
146 | if (!Record) |
147 | return false; |
148 | return (Record->getOptions() & PointerOptions::Volatile) != |
149 | PointerOptions::None; |
150 | } |
151 | |
152 | bool NativeTypePointer::isUnalignedType() const { |
153 | if (!Record) |
154 | return false; |
155 | return (Record->getOptions() & PointerOptions::Unaligned) != |
156 | PointerOptions::None; |
157 | } |
158 | |
159 | static inline bool isInheritanceKind(const MemberPointerInfo &MPI, |
160 | PointerToMemberRepresentation P1, |
161 | PointerToMemberRepresentation P2) { |
162 | return (MPI.getRepresentation() == P1 || MPI.getRepresentation() == P2); |
163 | } |
164 | |
165 | bool NativeTypePointer::isSingleInheritance() const { |
166 | if (!isMemberPointer()) |
167 | return false; |
168 | return isInheritanceKind( |
169 | MPI: Record->getMemberInfo(), |
170 | P1: PointerToMemberRepresentation::SingleInheritanceData, |
171 | P2: PointerToMemberRepresentation::SingleInheritanceFunction); |
172 | } |
173 | |
174 | bool NativeTypePointer::isMultipleInheritance() const { |
175 | if (!isMemberPointer()) |
176 | return false; |
177 | return isInheritanceKind( |
178 | MPI: Record->getMemberInfo(), |
179 | P1: PointerToMemberRepresentation::MultipleInheritanceData, |
180 | P2: PointerToMemberRepresentation::MultipleInheritanceFunction); |
181 | } |
182 | |
183 | bool NativeTypePointer::isVirtualInheritance() const { |
184 | if (!isMemberPointer()) |
185 | return false; |
186 | return isInheritanceKind( |
187 | MPI: Record->getMemberInfo(), |
188 | P1: PointerToMemberRepresentation::VirtualInheritanceData, |
189 | P2: PointerToMemberRepresentation::VirtualInheritanceFunction); |
190 | } |
191 | |
192 | bool NativeTypePointer::isMemberPointer() const { |
193 | return isPointerToDataMember() || isPointerToMemberFunction(); |
194 | } |
195 | |