1 //===- NativeSymbolEnumerator.cpp - info about enumerators ------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "llvm/DebugInfo/PDB/Native/NativeSymbolEnumerator.h"
11 
12 #include "llvm/DebugInfo/CodeView/SymbolRecord.h"
13 #include "llvm/DebugInfo/PDB/Native/NativeTypeBuiltin.h"
14 #include "llvm/DebugInfo/PDB/Native/NativeTypeEnum.h"
15 
16 using namespace llvm;
17 using namespace llvm::codeview;
18 using namespace llvm::pdb;
19 
20 NativeSymbolEnumerator::NativeSymbolEnumerator(
21     NativeSession &Session, SymIndexId Id, const NativeTypeEnum &Parent,
22     codeview::EnumeratorRecord Record)
23     : NativeRawSymbol(Session, PDB_SymType::Data, Id), Parent(Parent),
24       Record(std::move(Record)) {}
25 
26 NativeSymbolEnumerator::~NativeSymbolEnumerator() {}
27 
28 void NativeSymbolEnumerator::dump(raw_ostream &OS, int Indent,
29                                   PdbSymbolIdField ShowIdFields,
30                                   PdbSymbolIdField RecurseIdFields) const {
31   NativeRawSymbol::dump(OS, Indent, ShowIdFields, RecurseIdFields);
32   dumpSymbolIdField(OS, "classParentId", getClassParentId(), Indent, Session,
33                     PdbSymbolIdField::ClassParent, ShowIdFields,
34                     RecurseIdFields);
35   dumpSymbolIdField(OS, "lexicalParentId", getLexicalParentId(), Indent,
36                     Session, PdbSymbolIdField::LexicalParent, ShowIdFields,
37                     RecurseIdFields);
38   dumpSymbolField(OS, "name", getName(), Indent);
39   dumpSymbolIdField(OS, "typeId", getTypeId(), Indent, Session,
40                     PdbSymbolIdField::Type, ShowIdFields, RecurseIdFields);
41   dumpSymbolField(OS, "dataKind", getDataKind(), Indent);
42   dumpSymbolField(OS, "locationType", getLocationType(), Indent);
43   dumpSymbolField(OS, "constType", isConstType(), Indent);
44   dumpSymbolField(OS, "unalignedType", isUnalignedType(), Indent);
45   dumpSymbolField(OS, "volatileType", isVolatileType(), Indent);
46   dumpSymbolField(OS, "value", getValue(), Indent);
47 }
48 
49 SymIndexId NativeSymbolEnumerator::getClassParentId() const {
50   return Parent.getSymIndexId();
51 }
52 
53 SymIndexId NativeSymbolEnumerator::getLexicalParentId() const { return 0; }
54 
55 std::string NativeSymbolEnumerator::getName() const { return Record.Name; }
56 
57 SymIndexId NativeSymbolEnumerator::getTypeId() const {
58   return Parent.getTypeId();
59 }
60 
61 PDB_DataKind NativeSymbolEnumerator::getDataKind() const {
62   return PDB_DataKind::Constant;
63 }
64 
65 PDB_LocType NativeSymbolEnumerator::getLocationType() const {
66   return PDB_LocType::Constant;
67 }
68 
69 bool NativeSymbolEnumerator::isConstType() const { return false; }
70 
71 bool NativeSymbolEnumerator::isVolatileType() const { return false; }
72 
73 bool NativeSymbolEnumerator::isUnalignedType() const { return false; }
74 
75 Variant NativeSymbolEnumerator::getValue() const {
76   const NativeTypeBuiltin &BT = Parent.getUnderlyingBuiltinType();
77 
78   switch (BT.getBuiltinType()) {
79   case PDB_BuiltinType::Int:
80   case PDB_BuiltinType::Long:
81   case PDB_BuiltinType::Char: {
82     assert(Record.Value.isSignedIntN(BT.getLength() * 8));
83     int64_t N = Record.Value.getSExtValue();
84     switch (BT.getLength()) {
85     case 1:
86       return Variant{static_cast<int8_t>(N)};
87     case 2:
88       return Variant{static_cast<int16_t>(N)};
89     case 4:
90       return Variant{static_cast<int32_t>(N)};
91     case 8:
92       return Variant{static_cast<int64_t>(N)};
93     }
94     break;
95   }
96   case PDB_BuiltinType::UInt:
97   case PDB_BuiltinType::ULong: {
98     assert(Record.Value.isIntN(BT.getLength() * 8));
99     uint64_t U = Record.Value.getZExtValue();
100     switch (BT.getLength()) {
101     case 1:
102       return Variant{static_cast<uint8_t>(U)};
103     case 2:
104       return Variant{static_cast<uint16_t>(U)};
105     case 4:
106       return Variant{static_cast<uint32_t>(U)};
107     case 8:
108       return Variant{static_cast<uint64_t>(U)};
109     }
110     break;
111   }
112   case PDB_BuiltinType::Bool: {
113     assert(Record.Value.isIntN(BT.getLength() * 8));
114     uint64_t U = Record.Value.getZExtValue();
115     return Variant{static_cast<bool>(U)};
116   }
117   default:
118     assert(false && "Invalid enumeration type");
119     break;
120   }
121 
122   return Variant{Record.Value.getSExtValue()};
123 }
124