xref: /freebsd/contrib/llvm-project/llvm/lib/DebugInfo/PDB/Native/NativeSymbolEnumerator.cpp (revision 6966ac055c3b7a39266fb982493330df7a097997)
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/CodeView/SymbolRecord.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() {}
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 { return Record.Name; }
55 
56 SymIndexId NativeSymbolEnumerator::getTypeId() const {
57   return Parent.getTypeId();
58 }
59 
60 PDB_DataKind NativeSymbolEnumerator::getDataKind() const {
61   return PDB_DataKind::Constant;
62 }
63 
64 PDB_LocType NativeSymbolEnumerator::getLocationType() const {
65   return PDB_LocType::Constant;
66 }
67 
68 bool NativeSymbolEnumerator::isConstType() const { return false; }
69 
70 bool NativeSymbolEnumerator::isVolatileType() const { return false; }
71 
72 bool NativeSymbolEnumerator::isUnalignedType() const { return false; }
73 
74 Variant NativeSymbolEnumerator::getValue() const {
75   const NativeTypeBuiltin &BT = Parent.getUnderlyingBuiltinType();
76 
77   switch (BT.getBuiltinType()) {
78   case PDB_BuiltinType::Int:
79   case PDB_BuiltinType::Long:
80   case PDB_BuiltinType::Char: {
81     assert(Record.Value.isSignedIntN(BT.getLength() * 8));
82     int64_t N = Record.Value.getSExtValue();
83     switch (BT.getLength()) {
84     case 1:
85       return Variant{static_cast<int8_t>(N)};
86     case 2:
87       return Variant{static_cast<int16_t>(N)};
88     case 4:
89       return Variant{static_cast<int32_t>(N)};
90     case 8:
91       return Variant{static_cast<int64_t>(N)};
92     }
93     break;
94   }
95   case PDB_BuiltinType::UInt:
96   case PDB_BuiltinType::ULong: {
97     assert(Record.Value.isIntN(BT.getLength() * 8));
98     uint64_t U = Record.Value.getZExtValue();
99     switch (BT.getLength()) {
100     case 1:
101       return Variant{static_cast<uint8_t>(U)};
102     case 2:
103       return Variant{static_cast<uint16_t>(U)};
104     case 4:
105       return Variant{static_cast<uint32_t>(U)};
106     case 8:
107       return Variant{static_cast<uint64_t>(U)};
108     }
109     break;
110   }
111   case PDB_BuiltinType::Bool: {
112     assert(Record.Value.isIntN(BT.getLength() * 8));
113     uint64_t U = Record.Value.getZExtValue();
114     return Variant{static_cast<bool>(U)};
115   }
116   default:
117     assert(false && "Invalid enumeration type");
118     break;
119   }
120 
121   return Variant{Record.Value.getSExtValue()};
122 }
123