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      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_DEBUGCROSSEXSUBSECTION_H
     11 #define LLVM_DEBUGINFO_CODEVIEW_DEBUGCROSSEXSUBSECTION_H
     12 
     13 #include "llvm/DebugInfo/CodeView/CodeView.h"
     14 #include "llvm/DebugInfo/CodeView/DebugSubsection.h"
     15 #include "llvm/Support/BinaryStreamArray.h"
     16 #include "llvm/Support/BinaryStreamReader.h"
     17 #include "llvm/Support/BinaryStreamRef.h"
     18 #include "llvm/Support/Error.h"
     19 #include <cstdint>
     20 #include <map>
     21 
     22 namespace llvm {
     23 namespace codeview {
     24 
     25 class DebugCrossModuleExportsSubsectionRef final : public DebugSubsectionRef {
     26   using ReferenceArray = FixedStreamArray<CrossModuleExport>;
     27   using Iterator = ReferenceArray::Iterator;
     28 
     29 public:
     30   DebugCrossModuleExportsSubsectionRef()
     31       : DebugSubsectionRef(DebugSubsectionKind::CrossScopeExports) {}
     32 
     33   static bool classof(const DebugSubsectionRef *S) {
     34     return S->kind() == DebugSubsectionKind::CrossScopeExports;
     35   }
     36 
     37   Error initialize(BinaryStreamReader Reader);
     38   Error initialize(BinaryStreamRef Stream);
     39 
     40   Iterator begin() const { return References.begin(); }
     41   Iterator end() const { return References.end(); }
     42 
     43 private:
     44   FixedStreamArray<CrossModuleExport> References;
     45 };
     46 
     47 class DebugCrossModuleExportsSubsection final : public DebugSubsection {
     48 public:
     49   DebugCrossModuleExportsSubsection()
     50       : DebugSubsection(DebugSubsectionKind::CrossScopeExports) {}
     51 
     52   static bool classof(const DebugSubsection *S) {
     53     return S->kind() == DebugSubsectionKind::CrossScopeExports;
     54   }
     55 
     56   void addMapping(uint32_t Local, uint32_t Global);
     57 
     58   uint32_t calculateSerializedSize() const override;
     59   Error commit(BinaryStreamWriter &Writer) const override;
     60 
     61 private:
     62   std::map<uint32_t, uint32_t> Mappings;
     63 };
     64 
     65 } // end namespace codeview
     66 } // end namespace llvm
     67 
     68 #endif // LLVM_DEBUGINFO_CODEVIEW_DEBUGCROSSEXSUBSECTION_H
     69