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//===- GdbIndex.h --------------------------------------------*- C++ -*-===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===-------------------------------------------------------------------===//
#ifndef LLD_ELF_GDB_INDEX_H
#define LLD_ELF_GDB_INDEX_H
#include "InputFiles.h"
#include "llvm/Object/ELF.h"
#include "llvm/DebugInfo/DWARF/DWARFContext.h"
namespace lld {
namespace elf {
class InputSection;
// Struct represents single entry of address area of gdb index.
struct AddressEntry {
InputSection *Section;
uint64_t LowAddress;
uint64_t HighAddress;
size_t CuIndex;
};
// Element of GdbHashTab hash table.
struct GdbSymbol {
GdbSymbol(uint32_t Hash, size_t Offset)
: NameHash(Hash), NameOffset(Offset) {}
uint32_t NameHash;
size_t NameOffset;
size_t CuVectorIndex;
};
// This class manages the hashed symbol table for the .gdb_index section.
// The hash value for a table entry is computed by applying an iterative hash
// function to the symbol's name.
class GdbHashTab final {
public:
std::pair<bool, GdbSymbol *> add(uint32_t Hash, size_t Offset);
void finalizeContents();
size_t getCapacity() { return Table.size(); }
GdbSymbol *getSymbol(size_t I) { return Table[I]; }
private:
llvm::DenseMap<size_t, GdbSymbol *> Map;
std::vector<GdbSymbol *> Table;
};
} // namespace elf
} // namespace lld
#endif