1 //===-- TypeIndex.cpp - CodeView type index ---------------------*- 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/CodeView/TypeIndex.h"
10
11 #include "llvm/DebugInfo/CodeView/TypeCollection.h"
12 #include "llvm/Support/ScopedPrinter.h"
13
14 using namespace llvm;
15 using namespace llvm::codeview;
16
17 namespace {
18 struct SimpleTypeEntry {
19 StringRef Name;
20 SimpleTypeKind Kind;
21 };
22
23 /// The names here all end in "*". If the simple type is a pointer type, we
24 /// return the whole name. Otherwise we lop off the last character in our
25 /// StringRef.
26 static const SimpleTypeEntry SimpleTypeNames[] = {
27 {"void*", SimpleTypeKind::Void},
28 {"<not translated>*", SimpleTypeKind::NotTranslated},
29 {"HRESULT*", SimpleTypeKind::HResult},
30 {"signed char*", SimpleTypeKind::SignedCharacter},
31 {"unsigned char*", SimpleTypeKind::UnsignedCharacter},
32 {"char*", SimpleTypeKind::NarrowCharacter},
33 {"wchar_t*", SimpleTypeKind::WideCharacter},
34 {"char16_t*", SimpleTypeKind::Character16},
35 {"char32_t*", SimpleTypeKind::Character32},
36 {"char8_t*", SimpleTypeKind::Character8},
37 {"__int8*", SimpleTypeKind::SByte},
38 {"unsigned __int8*", SimpleTypeKind::Byte},
39 {"short*", SimpleTypeKind::Int16Short},
40 {"unsigned short*", SimpleTypeKind::UInt16Short},
41 {"__int16*", SimpleTypeKind::Int16},
42 {"unsigned __int16*", SimpleTypeKind::UInt16},
43 {"long*", SimpleTypeKind::Int32Long},
44 {"unsigned long*", SimpleTypeKind::UInt32Long},
45 {"int*", SimpleTypeKind::Int32},
46 {"unsigned*", SimpleTypeKind::UInt32},
47 {"__int64*", SimpleTypeKind::Int64Quad},
48 {"unsigned __int64*", SimpleTypeKind::UInt64Quad},
49 {"__int64*", SimpleTypeKind::Int64},
50 {"unsigned __int64*", SimpleTypeKind::UInt64},
51 {"__int128*", SimpleTypeKind::Int128},
52 {"unsigned __int128*", SimpleTypeKind::UInt128},
53 {"__half*", SimpleTypeKind::Float16},
54 {"float*", SimpleTypeKind::Float32},
55 {"float*", SimpleTypeKind::Float32PartialPrecision},
56 {"__float48*", SimpleTypeKind::Float48},
57 {"double*", SimpleTypeKind::Float64},
58 {"long double*", SimpleTypeKind::Float80},
59 {"__float128*", SimpleTypeKind::Float128},
60 {"_Complex float*", SimpleTypeKind::Complex32},
61 {"_Complex double*", SimpleTypeKind::Complex64},
62 {"_Complex long double*", SimpleTypeKind::Complex80},
63 {"_Complex __float128*", SimpleTypeKind::Complex128},
64 {"bool*", SimpleTypeKind::Boolean8},
65 {"__bool16*", SimpleTypeKind::Boolean16},
66 {"__bool32*", SimpleTypeKind::Boolean32},
67 {"__bool64*", SimpleTypeKind::Boolean64},
68 };
69 } // namespace
70
simpleTypeName(TypeIndex TI)71 StringRef TypeIndex::simpleTypeName(TypeIndex TI) {
72 assert(TI.isNoneType() || TI.isSimple());
73
74 if (TI.isNoneType())
75 return "<no type>";
76
77 if (TI == TypeIndex::NullptrT())
78 return "std::nullptr_t";
79
80 // This is a simple type.
81 for (const auto &SimpleTypeName : SimpleTypeNames) {
82 if (SimpleTypeName.Kind == TI.getSimpleKind()) {
83 if (TI.getSimpleMode() == SimpleTypeMode::Direct)
84 return SimpleTypeName.Name.drop_back(1);
85 // Otherwise, this is a pointer type. We gloss over the distinction
86 // between near, far, 64, 32, etc, and just give a pointer type.
87 return SimpleTypeName.Name;
88 }
89 }
90 return "<unknown simple type>";
91 }
92
printTypeIndex(ScopedPrinter & Printer,StringRef FieldName,TypeIndex TI,TypeCollection & Types)93 void llvm::codeview::printTypeIndex(ScopedPrinter &Printer, StringRef FieldName,
94 TypeIndex TI, TypeCollection &Types) {
95 StringRef TypeName;
96 if (!TI.isNoneType()) {
97 if (TI.isSimple())
98 TypeName = TypeIndex::simpleTypeName(TI);
99 else
100 TypeName = Types.getTypeName(TI);
101 }
102
103 if (!TypeName.empty())
104 Printer.printHex(FieldName, TypeName, TI.getIndex());
105 else
106 Printer.printHex(FieldName, TI.getIndex());
107 }
108