2010-02-12 Sriraman Tallam <tmsriram@google.com>

* arm.cc (Scan::local_reloc_may_be_function_pointer): New function.
	(Scan::global_reloc_may_be_function_pointer): New function.
	* sparc.cc (Scan::local_reloc_may_be_function_pointer): New function.
	(Scan::global_reloc_may_be_function_pointer): New function.
	* powerpc.cc (Scan::local_reloc_may_be_function_pointer): New function.
	(Scan::global_reloc_may_be_function_pointer): New function.
	* i386.cc (Scan::local_reloc_may_be_function_pointer): New function.
	(Scan::global_reloc_may_be_function_pointer): New function.
	* x86_64.cc (Scan::local_reloc_may_be_function_pointer): New function.
	(Scan::global_reloc_may_be_function_pointer): New function.
	(Scan::possible_function_pointer_reloc): New function.
	(Target_x86_64::can_check_for_function_pointers): New function.
	* gc.h (gc_process_relocs): Scan relocation types to determine if
	function pointers were taken for targets that support it.
	* icf.cc (Icf::find_identical_sections): Include functions for
	folding in safe ICF whose pointer is not taken.
	* icf.h (Secn_fptr_taken_set): New typedef.
	(fptr_section_id_): New member.
	(section_has_function_pointers): New function.
	(set_section_has_function_pointers): New function.
	(check_section_for_function_pointers): New function.
	* options.h: Fix comment for safe ICF option.
	* target.h (can_check_for_function_pointers): New function.
	* testsuite/Makefile.am: Add icf_safe_so_test test case.
	Modify icf_safe_test for X86-64.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/icf_safe_so_test.cc: New file.
	* testsuite/icf_safe_so_test.sh: New file.
	* testsuite/icf_safe_test.cc (kept_func_3): New function.
	(main): Change to take pointer to function kept_func_3.
	* testsuite/icf_safe_test.sh (arch_specific_safe_fold): Check if safe
	folding is done correctly for X86-64.
This commit is contained in:
Sriraman Tallam
2010-02-13 02:04:21 +00:00
parent 6076632b70
commit 21bb3914d6
17 changed files with 556 additions and 24 deletions

View File

@ -2171,6 +2171,25 @@ class Target_arm : public Sized_target<32, big_endian>
const elfcpp::Rel<32, big_endian>& reloc, unsigned int r_type,
Symbol* gsym);
inline bool
local_reloc_may_be_function_pointer(Symbol_table* , Layout* , Target_arm* ,
Sized_relobj<32, big_endian>* ,
unsigned int ,
Output_section* ,
const elfcpp::Rel<32, big_endian>& ,
unsigned int ,
const elfcpp::Sym<32, big_endian>&)
{ return false; }
inline bool
global_reloc_may_be_function_pointer(Symbol_table* , Layout* , Target_arm* ,
Sized_relobj<32, big_endian>* ,
unsigned int ,
Output_section* ,
const elfcpp::Rel<32, big_endian>& ,
unsigned int , Symbol*)
{ return false; }
private:
static void
unsupported_reloc_local(Sized_relobj<32, big_endian>*,