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Turn IFUNC symbols from shared libraries into normal FUNC symbols

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Turn IFUNC symbols from shared libraries into normal FUNC symbols when
we are resolving symbol references, instead of when we are writing out
the symbol table.

	PR gold/18886
	* resolve.cc (Symbol::override_base): Turn IFUNC symbols from
	shared libraries into normal FUNC symbols.
	* symtab.cc (Symbol_table::sized_write_symbol): Assert IFUNC
	symbols aren't from shared libraries.
This commit is contained in:
H.J. Lu 2015-09-02 04:14:21 -07:00
parent d49044c753
commit 358de98820
3 changed files with 16 additions and 5 deletions
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8
gold/ChangeLog
View file

@ -1,3 +1,11 @@
2015-09-02 H.J. Lu <hongjiu.lu@intel.com>
PR gold/18886
* resolve.cc (Symbol::override_base): Turn IFUNC symbols from
shared libraries into normal FUNC symbols.
* symtab.cc (Symbol_table::sized_write_symbol): Assert IFUNC
symbols aren't from shared libraries.
2015-09-02 Alan Modra <amodra@gmail.com>
PR 18878

8
gold/resolve.cc
View file

@ -98,7 +98,13 @@ Symbol::override_base(const elfcpp::Sym<size, big_endian>& sym,
this->is_ordinary_shndx_ = is_ordinary;
// Don't override st_type from plugin placeholder symbols.
if (object->pluginobj() == NULL)
this->type_ = sym.get_st_type();
{
// Turn IFUNC symbols from shared libraries into normal FUNC symbols.
elfcpp::STT type = sym.get_st_type();
if (object->is_dynamic() && type == elfcpp::STT_GNU_IFUNC)
type = elfcpp::STT_FUNC;
this->type_ = type;
}
this->binding_ = sym.get_st_bind();
this->override_visibility(sym.get_st_visibility());
this->nonvis_ = sym.get_st_nonvis();

5
gold/symtab.cc
View file

@ -3130,10 +3130,7 @@ Symbol_table::sized_write_symbol(
else
osym.put_st_size(sym->symsize());
elfcpp::STT type = sym->type();
// Turn IFUNC symbols from shared libraries into normal FUNC symbols.
if (type == elfcpp::STT_GNU_IFUNC
&& sym->is_from_dynobj())
type = elfcpp::STT_FUNC;
gold_assert(type != elfcpp::STT_GNU_IFUNC || !sym->is_from_dynobj());
// A version script may have overridden the default binding.
if (sym->is_forced_local())
osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, type));