#ifndef LLVM_LIB_DEBUGINFO_DWARFUNITINDEX_H
#define LLVM_LIB_DEBUGINFO_DWARFUNITINDEX_H
#include "llvm/Support/DataExtractor.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
#include <cstdint>
namespace llvm {
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;
};
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:
bool parse(DataExtractor IndexData);
DWARFUnitIndex(DWARFSectionKind InfoColumnKind)
: InfoColumnKind(InfoColumnKind) {}
void dump(raw_ostream &OS) const;
const Entry *getFromOffset(uint32_t Offset) const;
};
}
#endif