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Add support for local GOT offsets.

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This commit is contained in:
Ian Lance Taylor
2007-10-08 07:22:21 +00:00
parent af6359d59d
commit e727fa71af
4 changed files with 94 additions and 30 deletions
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70
gold/object.h
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@ -612,6 +612,54 @@ class Sized_relobj : public Relobj
return this->local_values_[sym].output_symtab_index();
}
// Return the appropriate Sized_target structure.
Sized_target<size, big_endian>*
sized_target()
{
return this->Object::sized_target
SELECT_SIZE_ENDIAN_NAME(size, big_endian) (
SELECT_SIZE_ENDIAN_ONLY(size, big_endian));
}
// Return the value of the local symbol symndx.
Address
local_symbol_value(unsigned int symndx) const;
// Return the value of a local symbol defined in input section
// SHNDX, with value VALUE, adding addend ADDEND. IS_SECTION_SYMBOL
// indicates whether the symbol is a section symbol. This handles
// SHF_MERGE sections.
Address
local_value(unsigned int shndx, Address value, bool is_section_symbol,
Address addend) const;
// Return whether the local symbol SYMNDX has a GOT offset.
bool
local_has_got_offset(unsigned int symndx) const
{
return (this->local_got_offsets_.find(symndx)
!= this->local_got_offsets_.end());
}
// Return the GOT offset of the local symbol SYMNDX.
unsigned int
local_got_offset(unsigned int symndx) const
{
Local_got_offsets::const_iterator p =
this->local_got_offsets_.find(symndx);
gold_assert(p != this->local_got_offsets_.end());
return p->second;
}
// Set the GOT offset of the local symbol SYMNDX to GOT_OFFSET.
void
set_local_got_offset(unsigned int symndx, unsigned int got_offset)
{
std::pair<Local_got_offsets::iterator, bool> ins =
this->local_got_offsets_.insert(std::make_pair(symndx, got_offset));
gold_assert(ins.second);
}
// Read the symbols.
void
do_read_symbols(Read_symbols_data*);
@ -658,23 +706,6 @@ class Sized_relobj : public Relobj
do_section_flags(unsigned int shndx)
{ return this->elf_file_.section_flags(shndx); }
// Return the appropriate Sized_target structure.
Sized_target<size, big_endian>*
sized_target()
{
return this->Object::sized_target
SELECT_SIZE_ENDIAN_NAME(size, big_endian) (
SELECT_SIZE_ENDIAN_ONLY(size, big_endian));
}
// Return the value of a local symbol define in input section SHNDX,
// with value VALUE, adding addend ADDEND. IS_SECTION_SYMBOL
// indicates whether the symbol is a section symbol. This handles
// SHF_MERGE sections.
Address
local_value(unsigned int shndx, Address value, bool is_section_symbol,
Address addend) const;
private:
// For convenience.
typedef Sized_relobj<size, big_endian> This;
@ -724,6 +755,9 @@ class Sized_relobj : public Relobj
write_local_symbols(Output_file*,
const Stringpool_template<char>*);
// The GOT offsets of local symbols.
typedef Unordered_map<unsigned int, unsigned int> Local_got_offsets;
// General access to the ELF file.
elfcpp::Elf_file<size, big_endian, Object> elf_file_;
// Index of SHT_SYMTAB section.
@ -738,6 +772,8 @@ class Sized_relobj : public Relobj
off_t local_symbol_offset_;
// Values of local symbols.
Local_values local_values_;
// GOT offsets for local symbols, indexed by symbol number.
Local_got_offsets local_got_offsets_;
};
// A class to manage the list of all objects.