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Let special symbols override existing symbols rather than

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reinitializing them.
This commit is contained in:
Ian Lance Taylor
2007-09-19 06:02:29 +00:00
parent 8ae3da9046
commit 86f2e68346
3 changed files with 378 additions and 217 deletions
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22
gold/symtab.h
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@ -404,6 +404,10 @@ class Symbol
override_base(const elfcpp::Sym<size, big_endian>&, Object* object,
const char* version);
// Override existing symbol with a special symbol.
void
override_base_with_special(const Symbol* from);
private:
Symbol(const Symbol&);
Symbol& operator=(const Symbol&);
@ -549,6 +553,10 @@ class Sized_symbol : public Symbol
override(const elfcpp::Sym<size, big_endian>&, Object* object,
const char* version);
// Override existing symbol with a special symbol.
void
override_with_special(const Sized_symbol<size>*);
// Return the symbol's value.
Value_type
value() const
@ -905,12 +913,22 @@ class Symbol_table
resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from,
const char* version ACCEPT_SIZE_ENDIAN);
// Whether we should override a symbol, based on flags in
// resolve.cc.
static bool
should_override(const Symbol*, unsigned int, bool*);
// Whether we should override a symbol with a special symbol which
// is automatically defined by the linker.
static bool
should_override_with_special(const Symbol*);
// Define a special symbol.
template<int size, bool big_endian>
Sized_symbol<size>*
define_special_symbol(const Target* target, const char* name,
const char* version, bool only_if_ref
ACCEPT_SIZE_ENDIAN);
const char* version, bool only_if_ref,
Sized_symbol<size>** poldsym ACCEPT_SIZE_ENDIAN);
// Define a symbol in an Output_data, sized version.
template<int size>