1 //===- DebugCrossExSubsection.h ---------------------------------*- 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 #ifndef LLVM_DEBUGINFO_CODEVIEW_DEBUGCROSSIMPSUBSECTION_H 11 #define LLVM_DEBUGINFO_CODEVIEW_DEBUGCROSSIMPSUBSECTION_H 12 13 #include "llvm/ADT/StringMap.h" 14 #include "llvm/ADT/StringRef.h" 15 #include "llvm/DebugInfo/CodeView/CodeView.h" 16 #include "llvm/DebugInfo/CodeView/DebugSubsection.h" 17 #include "llvm/Support/BinaryStreamArray.h" 18 #include "llvm/Support/BinaryStreamReader.h" 19 #include "llvm/Support/BinaryStreamRef.h" 20 #include "llvm/Support/Endian.h" 21 #include "llvm/Support/Error.h" 22 #include <cstdint> 23 #include <vector> 24 25 namespace llvm { 26 27 namespace codeview { 28 29 struct CrossModuleImportItem { 30 const CrossModuleImport *Header = nullptr; 31 FixedStreamArray<support::ulittle32_t> Imports; 32 }; 33 34 } // end namespace codeview 35 36 template <> struct VarStreamArrayExtractor<codeview::CrossModuleImportItem> { 37 public: 38 using ContextType = void; 39 40 Error operator()(BinaryStreamRef Stream, uint32_t &Len, 41 codeview::CrossModuleImportItem &Item); 42 }; 43 44 namespace codeview { 45 46 class DebugStringTableSubsection; 47 48 class DebugCrossModuleImportsSubsectionRef final : public DebugSubsectionRef { 49 using ReferenceArray = VarStreamArray<CrossModuleImportItem>; 50 using Iterator = ReferenceArray::Iterator; 51 52 public: 53 DebugCrossModuleImportsSubsectionRef() 54 : DebugSubsectionRef(DebugSubsectionKind::CrossScopeImports) {} 55 56 static bool classof(const DebugSubsectionRef *S) { 57 return S->kind() == DebugSubsectionKind::CrossScopeImports; 58 } 59 60 Error initialize(BinaryStreamReader Reader); 61 Error initialize(BinaryStreamRef Stream); 62 63 Iterator begin() const { return References.begin(); } 64 Iterator end() const { return References.end(); } 65 66 private: 67 ReferenceArray References; 68 }; 69 70 class DebugCrossModuleImportsSubsection final : public DebugSubsection { 71 public: 72 explicit DebugCrossModuleImportsSubsection( 73 DebugStringTableSubsection &Strings) 74 : DebugSubsection(DebugSubsectionKind::CrossScopeImports), 75 Strings(Strings) {} 76 77 static bool classof(const DebugSubsection *S) { 78 return S->kind() == DebugSubsectionKind::CrossScopeImports; 79 } 80 81 void addImport(StringRef Module, uint32_t ImportId); 82 83 uint32_t calculateSerializedSize() const override; 84 Error commit(BinaryStreamWriter &Writer) const override; 85 86 private: 87 DebugStringTableSubsection &Strings; 88 StringMap<std::vector<support::ulittle32_t>> Mappings; 89 }; 90 91 } // end namespace codeview 92 93 } // end namespace llvm 94 95 #endif // LLVM_DEBUGINFO_CODEVIEW_DEBUGCROSSIMPSUBSECTION_H 96
