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  1. //===- DebugInlineeLinesSubsection.h ----------------------------*- 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. #ifndef LLVM_DEBUGINFO_CODEVIEW_DEBUGINLINEELINESSUBSECTION_H
  10. #define LLVM_DEBUGINFO_CODEVIEW_DEBUGINLINEELINESSUBSECTION_H
  11.  
  12. #include "llvm/ADT/StringRef.h"
  13. #include "llvm/DebugInfo/CodeView/CodeView.h"
  14. #include "llvm/DebugInfo/CodeView/DebugSubsection.h"
  15. #include "llvm/DebugInfo/CodeView/TypeIndex.h"
  16. #include "llvm/Support/BinaryStreamArray.h"
  17. #include "llvm/Support/BinaryStreamReader.h"
  18. #include "llvm/Support/BinaryStreamRef.h"
  19. #include "llvm/Support/Endian.h"
  20. #include "llvm/Support/Error.h"
  21. #include <cstdint>
  22. #include <vector>
  23.  
  24. namespace llvm {
  25.  
  26. namespace codeview {
  27.  
  28. class DebugChecksumsSubsection;
  29.  
  30. enum class InlineeLinesSignature : uint32_t {
  31.   Normal,    // CV_INLINEE_SOURCE_LINE_SIGNATURE
  32.   ExtraFiles // CV_INLINEE_SOURCE_LINE_SIGNATURE_EX
  33. };
  34.  
  35. struct InlineeSourceLineHeader {
  36.   TypeIndex Inlinee;                  // ID of the function that was inlined.
  37.   support::ulittle32_t FileID;        // Offset into FileChecksums subsection.
  38.   support::ulittle32_t SourceLineNum; // First line of inlined code.
  39.                                       // If extra files present:
  40.                                       //   ulittle32_t ExtraFileCount;
  41.                                       //   ulittle32_t Files[];
  42. };
  43.  
  44. struct InlineeSourceLine {
  45.   const InlineeSourceLineHeader *Header;
  46.   FixedStreamArray<support::ulittle32_t> ExtraFiles;
  47. };
  48.  
  49. } // end namespace codeview
  50.  
  51. template <> struct VarStreamArrayExtractor<codeview::InlineeSourceLine> {
  52.   Error operator()(BinaryStreamRef Stream, uint32_t &Len,
  53.                    codeview::InlineeSourceLine &Item);
  54.  
  55.   bool HasExtraFiles = false;
  56. };
  57.  
  58. namespace codeview {
  59.  
  60. class DebugInlineeLinesSubsectionRef final : public DebugSubsectionRef {
  61.   using LinesArray = VarStreamArray<InlineeSourceLine>;
  62.   using Iterator = LinesArray::Iterator;
  63.  
  64. public:
  65.   DebugInlineeLinesSubsectionRef();
  66.  
  67.   static bool classof(const DebugSubsectionRef *S) {
  68.     return S->kind() == DebugSubsectionKind::InlineeLines;
  69.   }
  70.  
  71.   Error initialize(BinaryStreamReader Reader);
  72.   Error initialize(BinaryStreamRef Section) {
  73.     return initialize(BinaryStreamReader(Section));
  74.   }
  75.  
  76.   bool valid() const { return Lines.valid(); }
  77.   bool hasExtraFiles() const;
  78.  
  79.   Iterator begin() const { return Lines.begin(); }
  80.   Iterator end() const { return Lines.end(); }
  81.  
  82. private:
  83.   InlineeLinesSignature Signature;
  84.   LinesArray Lines;
  85. };
  86.  
  87. class DebugInlineeLinesSubsection final : public DebugSubsection {
  88. public:
  89.   struct Entry {
  90.     std::vector<support::ulittle32_t> ExtraFiles;
  91.     InlineeSourceLineHeader Header;
  92.   };
  93.  
  94.   DebugInlineeLinesSubsection(DebugChecksumsSubsection &Checksums,
  95.                               bool HasExtraFiles = false);
  96.  
  97.   static bool classof(const DebugSubsection *S) {
  98.     return S->kind() == DebugSubsectionKind::InlineeLines;
  99.   }
  100.  
  101.   Error commit(BinaryStreamWriter &Writer) const override;
  102.   uint32_t calculateSerializedSize() const override;
  103.  
  104.   void addInlineSite(TypeIndex FuncId, StringRef FileName, uint32_t SourceLine);
  105.   void addExtraFile(StringRef FileName);
  106.  
  107.   bool hasExtraFiles() const { return HasExtraFiles; }
  108.   void setHasExtraFiles(bool Has) { HasExtraFiles = Has; }
  109.  
  110.   std::vector<Entry>::const_iterator begin() const { return Entries.begin(); }
  111.   std::vector<Entry>::const_iterator end() const { return Entries.end(); }
  112.  
  113. private:
  114.   DebugChecksumsSubsection &Checksums;
  115.   bool HasExtraFiles = false;
  116.   uint32_t ExtraFileCount = 0;
  117.   std::vector<Entry> Entries;
  118. };
  119.  
  120. } // end namespace codeview
  121.  
  122. } // end namespace llvm
  123.  
  124. #endif // LLVM_DEBUGINFO_CODEVIEW_DEBUGINLINEELINESSUBSECTION_H
  125.