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