59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
//===- 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
|