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ld: Hide symbols defined by HIDDEN/PROVIDE_HIDDEN

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There should be no difference in output for symbols defined by HIDDEN
or PROVIDE_HIDDEN assignments whether they are explicitly marked as
hidden or not.  This patch adds a new BFD function, bfd_link_hide_symbol,
to hide symbols defined by HIDDEN and PROVIDE_HIDDEN assignments.

bfd

	PR ld/23201
	* aout-target.h (MY_bfd_link_hide_symbol): New.
	* aout-tic30.c (MY_bfd_link_hide_symbol): Likewise.
	* binary.c (binary_bfd_link_hide_symbol): Likewise.
	* coff-alpha.c (_bfd_ecoff_bfd_link_hide_symbol): Likewise.
	* coff-mips.c (_bfd_ecoff_bfd_link_hide_symbol): Likewise.
	* coff-rs6000.c (_bfd_xcoff_bfd_link_hide_symbol): Likewise.
	* coffcode.h (coff_bfd_link_hide_symbol): Likewise.
	* elf-bfd.h (_bfd_elf_link_hide_symbol): Likewise.
	* elfxx-target.h (bfd_elfNN_bfd_link_hide_symbol): Likewise.
	* i386msdos.c (msdos_bfd_link_hide_symbol): Likewise.
	* ihex.c (ihex_bfd_link_hide_symbol): Likewise.
	* libbfd-in.h (_bfd_nolink_bfd_link_hide_symbol): Likewise.
	* linker.c (_bfd_generic_link_hide_symbol): Likewise.
	(bfd_link_hide_symbol): Likewise.
	* mach-o-target.c (bfd_mach_o_bfd_link_hide_symbol): Likewise.
	* mmo.c (mmo_bfd_link_hide_symbol): Likewise.
	* pef.c (bfd_pef_bfd_link_hide_symbol): Likewise.
	* plugin.c (bfd_plugin_bfd_link_hide_symbol): Likewise.
	* ppcboot.c (ppcboot_bfd_link_hide_symbol): Likewise.
	* som.c (som_bfd_link_hide_symbol): Likewise.
	* srec.c (srec_bfd_link_hide_symbol): Likewise.
	* tekhex.c (tekhex_bfd_link_hide_symbol): Likewise.
	* vms-alpha.c (vms_bfd_link_hide_symbol): Likewise.
	(alpha_vms_bfd_link_hide_symbol): Likewise.
	* xsym.c (bfd_sym_bfd_link_hide_symbol): Likewise.
	* coff64-rs6000.c (rs6000_xcoff64_vec): Add
	_bfd_generic_link_hide_symbol.
	(rs6000_xcoff64_aix_vec): Likewise.
	* elflink.c (bfd_elf_record_link_assignment): Don't make forced
	local symbol dynamic.
	(_bfd_elf_link_hide_symbol): New function.
	* elfxx-x86.c (_bfd_x86_elf_link_symbol_references_local): Don't
	check root.ldscript_def.
	* targets.c (bfd_target): Add _bfd_link_hide_symbol.
	(BFD_JUMP_TABLE_LINK): Add NAME##_bfd_link_hide_symbol.
	* bfd-in2.h: Regenerated.
	* libbfd.h: Likewise.

ld/

	PR ld/23201
	* ldexp.c (exp_fold_tree_1): Call bfd_link_hide_symbol to hide
	a symbol.
	* testsuite/ld-elf/provide-hidden-dynabs.nd: Removed.
	* testsuite/ld-elf/provide-hidden-dynsec.nd: Likewise.
	* testsuite/ld-elf/provide-hidden.exp: Replace
	provide-hidden-dynsec.nd with provide-hidden-sec.nd and
	provide-hidden-dyn.nd.  Replace provide-hidden-dynabs.nd with
	provide-hidden-abs.nd and provide-hidden-dyn.nd.
	* testsuite/ld-i386/pr23189.d: Expect no dynamic relocation.
	* testsuite/ld-x86-64/pr23189.d: Likewise.
This commit is contained in:
H.J. Lu
2018-05-21 20:39:09 -07:00
parent bae363f114
commit 34a87bb07a
37 changed files with 173 additions and 30 deletions
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1
bfd/mmo.c
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@ -3318,6 +3318,7 @@ mmo_write_object_contents (bfd *abfd)
#define mmo_section_already_linked \
_bfd_generic_section_already_linked
#define mmo_bfd_define_common_symbol bfd_generic_define_common_symbol
#define mmo_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
#define mmo_bfd_define_start_stop bfd_generic_define_start_stop
/* We want to copy time of creation, otherwise we'd use