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// symtab.h -- the gold symbol table -*- C++ -*-
// Symbol_table
// The symbol table.
#include "gold.h"
#include <string>
#include <utility>
#include "elfcpp.h"
#include "targetsize.h"
#include "object.h"
#include "workqueue.h"
#ifndef GOLD_SYMTAB_H
#define GOLD_SYMTAB_H
namespace gold
{
// An entry in the symbol table. The symbol table can have a lot of
// entries, so we don't want this class to get too big.
template<int size>
class Symbol
{
public:
typedef typename elfcpp::Elf_types<size>::Elf_Addr Value;
typedef typename Size_types<size>::Unsigned_type Size;
private:
// Every symbol has a unique name, more or less, so we use
// std::string for the name. There are only a few versions in a
// given link, so for them we point into a pool.
std::string name_;
const char* version_;
Object* object_;
unsigned int shnum_;
Value value_;
Size size_;
elfcpp::STT type_ : 4;
elfcpp::STB binding_ : 4;
elfcpp:STV visibility_ : 2;
unsigned int other_ : 6;
};
// The main linker symbol table.
template<int size>
class Symbol_table
{
public:
Symbol_table();
// Return a pointer to a symbol specified by name.
Symbol*
lookup(const std::string& name) const;
// Return a pointer to a symbol specified by name plus version.
Symbol*
lookup(const std::string& name, const char* version) const;
Task_token&
token() const
{ return this->token_; }
private:
Symbol_table(const Symbol_table&);
Symbol_table& operator=(const Symbol_table&);
typedef std::pair<std::string, std::string> Symbol_table_key;
Unordered_map<Symbol_table_key, Symbol<size>*> table_;
Task_token token_;
};
} // End namespace gold.
#endif // !defined(GOLD_SYMTAB_H)
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