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x86: Add POINTER_LOCAL_IFUNC_P/PLT_LOCAL_IFUNC_P

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Add POINTER_LOCAL_IFUNC_P which returns TRUE for pointer reference to
local IFUNC symbol.  Add PLT_LOCAL_IFUNC_P which returns TRUE for PLT
reference to local IFUNC symbol.

	* elfxx-x86.h (POINTER_LOCAL_IFUNC_P): New.
	(PLT_LOCAL_IFUNC_P): Likewise.
	* elf32-i386.c (elf_i386_relocate_section): Use them.
	* elf64-x86-64.c (elf_x86_64_relocate_section): Likewise.
This commit is contained in:
H.J. Lu 2017-10-06 00:35:13 -07:00
parent f70656b260
commit cf1070f1a1
4 changed files with 25 additions and 16 deletions
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7
bfd/ChangeLog
View File

@ -1,3 +1,10 @@
2017-10-06 H.J. Lu <hongjiu.lu@intel.com>
* elfxx-x86.h (POINTER_LOCAL_IFUNC_P): New.
(PLT_LOCAL_IFUNC_P): Likewise.
* elf32-i386.c (elf_i386_relocate_section): Use them.
* elf64-x86-64.c (elf_x86_64_relocate_section): Likewise.
2017-10-06 H.J. Lu <hongjiu.lu@intel.com>
* elfxx-x86.h (GENERATE_RELATIVE_RELOC_P): New.

10
bfd/elf32-i386.c
View File

@ -2388,9 +2388,7 @@ do_ifunc_pointer:
+ input_section->output_offset
+ offset);
if (h->dynindx == -1
|| h->forced_local
|| bfd_link_executable (info))
if (POINTER_LOCAL_IFUNC_P (info, h))
{
info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
h->root.root.string,
@ -3732,11 +3730,7 @@ elf_i386_finish_dynamic_symbol (bfd *output_bfd,
rel.r_offset = (gotplt->output_section->vma
+ gotplt->output_offset
+ got_offset);
if (h->dynindx == -1
|| ((bfd_link_executable (info)
|| ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
if (PLT_LOCAL_IFUNC_P (info, h))
{
info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
h->root.root.string,

10
bfd/elf64-x86-64.c
View File

@ -2687,9 +2687,7 @@ do_ifunc_pointer:
outrel.r_offset += (input_section->output_section->vma
+ input_section->output_offset);
if (h->dynindx == -1
|| h->forced_local
|| bfd_link_executable (info))
if (POINTER_LOCAL_IFUNC_P (info, h))
{
info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
h->root.root.string,
@ -4058,11 +4056,7 @@ elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
rela.r_offset = (gotplt->output_section->vma
+ gotplt->output_offset
+ got_offset);
if (h->dynindx == -1
|| ((bfd_link_executable (info)
|| ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
if (PLT_LOCAL_IFUNC_P (info, h))
{
info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
h->root.root.string,

14
bfd/elfxx-x86.h
View File

@ -136,6 +136,20 @@
&& (H)->root.type != bfd_link_hash_undefweak \
&& bfd_link_pic (INFO))
/* TRUE if this is a pointer reference to a local IFUNC. */
#define POINTER_LOCAL_IFUNC_P(INFO, H) \
((H)->dynindx == -1 \
|| (H)->forced_local \
|| bfd_link_executable (INFO))
/* TRUE if this is a PLT reference to a local IFUNC. */
#define PLT_LOCAL_IFUNC_P(INFO, H) \
((H)->dynindx == -1 \
|| ((bfd_link_executable (INFO) \
|| ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT) \
&& (H)->def_regular \
&& (H)->type == STT_GNU_IFUNC))
/* TRUE if TLS IE->LE transition is OK. */
#define TLS_TRANSITION_IE_TO_LE_P(INFO, H, TLS_TYPE) \
(bfd_link_executable (INFO) \