//===- DWARFUnitIndex.h -----------------------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #ifndef LLVM_DEBUGINFO_DWARF_DWARFUNITINDEX_H #define LLVM_DEBUGINFO_DWARF_DWARFUNITINDEX_H #include "llvm/ADT/ArrayRef.h" #include "llvm/ADT/StringRef.h" #include "llvm/Support/DataExtractor.h" #include <cstdint> #include <memory> namespace llvm { class raw_ostream; enum DWARFSectionKind { DW_SECT_INFO = 1, DW_SECT_TYPES, DW_SECT_ABBREV, DW_SECT_LINE, DW_SECT_LOC, DW_SECT_STR_OFFSETS, DW_SECT_MACINFO, DW_SECT_MACRO, }; class DWARFUnitIndex { struct Header { uint32_t Version; uint32_t NumColumns; uint32_t NumUnits; uint32_t NumBuckets = 0; bool parse(DataExtractor IndexData, uint32_t *OffsetPtr); void dump(raw_ostream &OS) const; }; public: class Entry { public: struct SectionContribution { uint32_t Offset; uint32_t Length; }; private: const DWARFUnitIndex *Index; uint64_t Signature; std::unique_ptr<SectionContribution[]> Contributions; friend class DWARFUnitIndex; public: const SectionContribution *getOffset(DWARFSectionKind Sec) const; const SectionContribution *getOffset() const; const SectionContribution *getOffsets() const { return Contributions.get(); } uint64_t getSignature() const { return Signature; } }; private: struct Header Header; DWARFSectionKind InfoColumnKind; int InfoColumn = -1; std::unique_ptr<DWARFSectionKind[]> ColumnKinds; std::unique_ptr<Entry[]> Rows; static StringRef getColumnHeader(DWARFSectionKind DS); bool parseImpl(DataExtractor IndexData); public: DWARFUnitIndex(DWARFSectionKind InfoColumnKind) : InfoColumnKind(InfoColumnKind) {} bool parse(DataExtractor IndexData); void dump(raw_ostream &OS) const; const Entry *getFromOffset(uint32_t Offset) const; ArrayRef<DWARFSectionKind> getColumnKinds() const { return makeArrayRef(ColumnKinds.get(), Header.NumColumns); } ArrayRef<Entry> getRows() const { return makeArrayRef(Rows.get(), Header.NumBuckets); } }; } // end namespace llvm #endif // LLVM_DEBUGINFO_DWARF_DWARFUNITINDEX_H