1 //===- NativeSymbolEnumerator.cpp - info about enumerators ------*- 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/NativeSymbolEnumerator.h"
10 
11 #include "llvm/DebugInfo/PDB/Native/NativeSession.h"
12 #include "llvm/DebugInfo/PDB/Native/NativeTypeBuiltin.h"
13 #include "llvm/DebugInfo/PDB/Native/NativeTypeEnum.h"
14 
15 using namespace llvm;
16 using namespace llvm::codeview;
17 using namespace llvm::pdb;
18 
19 NativeSymbolEnumerator::NativeSymbolEnumerator(
20     NativeSession &Session, SymIndexId Id, const NativeTypeEnum &Parent,
21     codeview::EnumeratorRecord Record)
22     : NativeRawSymbol(Session, PDB_SymType::Data, Id), Parent(Parent),
23       Record(std::move(Record)) {}
24 
25 NativeSymbolEnumerator::~NativeSymbolEnumerator() = default;
26 
27 void NativeSymbolEnumerator::dump(raw_ostream &OS, int Indent,
28                                   PdbSymbolIdField ShowIdFields,
29                                   PdbSymbolIdField RecurseIdFields) const {
30   NativeRawSymbol::dump(OS, Indent, ShowIdFields, RecurseIdFields);
31   dumpSymbolIdField(OS, "classParentId", getClassParentId(), Indent, Session,
32                     PdbSymbolIdField::ClassParent, ShowIdFields,
33                     RecurseIdFields);
34   dumpSymbolIdField(OS, "lexicalParentId", getLexicalParentId(), Indent,
35                     Session, PdbSymbolIdField::LexicalParent, ShowIdFields,
36                     RecurseIdFields);
37   dumpSymbolField(OS, "name", getName(), Indent);
38   dumpSymbolIdField(OS, "typeId", getTypeId(), Indent, Session,
39                     PdbSymbolIdField::Type, ShowIdFields, RecurseIdFields);
40   dumpSymbolField(OS, "dataKind", getDataKind(), Indent);
41   dumpSymbolField(OS, "locationType", getLocationType(), Indent);
42   dumpSymbolField(OS, "constType", isConstType(), Indent);
43   dumpSymbolField(OS, "unalignedType", isUnalignedType(), Indent);
44   dumpSymbolField(OS, "volatileType", isVolatileType(), Indent);
45   dumpSymbolField(OS, "value", getValue(), Indent);
46 }
47 
48 SymIndexId NativeSymbolEnumerator::getClassParentId() const {
49   return Parent.getSymIndexId();
50 }
51 
52 SymIndexId NativeSymbolEnumerator::getLexicalParentId() const { return 0; }
53 
54 std::string NativeSymbolEnumerator::getName() const {
55   return std::string(Record.Name);
56 }
57 
58 SymIndexId NativeSymbolEnumerator::getTypeId() const {
59   return Parent.getTypeId();
60 }
61 
62 PDB_DataKind NativeSymbolEnumerator::getDataKind() const {
63   return PDB_DataKind::Constant;
64 }
65 
66 PDB_LocType NativeSymbolEnumerator::getLocationType() const {
67   return PDB_LocType::Constant;
68 }
69 
70 bool NativeSymbolEnumerator::isConstType() const { return false; }
71 
72 bool NativeSymbolEnumerator::isVolatileType() const { return false; }
73 
74 bool NativeSymbolEnumerator::isUnalignedType() const { return false; }
75 
76 Variant NativeSymbolEnumerator::getValue() const {
77   const NativeTypeBuiltin &BT = Parent.getUnderlyingBuiltinType();
78 
79   switch (BT.getBuiltinType()) {
80   case PDB_BuiltinType::Int:
81   case PDB_BuiltinType::Long:
82   case PDB_BuiltinType::Char: {
83     assert(Record.Value.isSignedIntN(BT.getLength() * 8));
84     int64_t N = Record.Value.getSExtValue();
85     switch (BT.getLength()) {
86     case 1:
87       return Variant{static_cast<int8_t>(N)};
88     case 2:
89       return Variant{static_cast<int16_t>(N)};
90     case 4:
91       return Variant{static_cast<int32_t>(N)};
92     case 8:
93       return Variant{static_cast<int64_t>(N)};
94     }
95     break;
96   }
97   case PDB_BuiltinType::UInt:
98   case PDB_BuiltinType::ULong: {
99     assert(Record.Value.isIntN(BT.getLength() * 8));
100     uint64_t U = Record.Value.getZExtValue();
101     switch (BT.getLength()) {
102     case 1:
103       return Variant{static_cast<uint8_t>(U)};
104     case 2:
105       return Variant{static_cast<uint16_t>(U)};
106     case 4:
107       return Variant{static_cast<uint32_t>(U)};
108     case 8:
109       return Variant{static_cast<uint64_t>(U)};
110     }
111     break;
112   }
113   case PDB_BuiltinType::Bool: {
114     assert(Record.Value.isIntN(BT.getLength() * 8));
115     uint64_t U = Record.Value.getZExtValue();
116     return Variant{static_cast<bool>(U)};
117   }
118   default:
119     assert(false && "Invalid enumeration type");
120     break;
121   }
122 
123   return Variant{Record.Value.getSExtValue()};
124 }
125