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* elf-bfd.h (struct elf_backend_data): Add as_needed_cleanup hook.

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* elfxx-target.h (elf_backend_as_needed_cleanup): Define.
	(elfNN_bed): Add as_needed_cleanup hook.
	* elflink.c (elf_link_add_object_symbols): Call it when reverting
	hash table changes for unneeded --as-needed input.
	* elf64-ppc64.c (elf_backend_as_needed_cleanup): Define.
	(ppc64_elf_as_needed_cleanup): New function.
This commit is contained in:
Jakub Jelinek
2006-12-23 09:57:38 +00:00
parent 9f99647568
commit 97fed1c92e
5 changed files with 35 additions and 0 deletions
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10
bfd/ChangeLog
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@ -1,3 +1,13 @@
2006-12-23 Jakub Jelinek <jakub@redhat.com>
* elf-bfd.h (struct elf_backend_data): Add as_needed_cleanup hook.
* elfxx-target.h (elf_backend_as_needed_cleanup): Define.
(elfNN_bed): Add as_needed_cleanup hook.
* elflink.c (elf_link_add_object_symbols): Call it when reverting
hash table changes for unneeded --as-needed input.
* elf64-ppc64.c (elf_backend_as_needed_cleanup): Define.
(ppc64_elf_as_needed_cleanup): New function.
2006-12-19 Kazu Hirata <kazu@codesourcery.com> 2006-12-19 Kazu Hirata <kazu@codesourcery.com>
* elf32-m68k.c (elf32_m68k_object_p, * elf32-m68k.c (elf32_m68k_object_p,

7
bfd/elf-bfd.h
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@ -711,6 +711,13 @@ struct elf_backend_data
bfd_boolean (*check_directives) bfd_boolean (*check_directives)
(bfd *abfd, struct bfd_link_info *info); (bfd *abfd, struct bfd_link_info *info);
/* The AS_NEEDED_CLEANUP function is called once per --as-needed
input file that was not needed by the add_symbols phase of the
ELF backend linker. The function must undo any target specific
changes in the symbol hash table. */
bfd_boolean (*as_needed_cleanup)
(bfd *abfd, struct bfd_link_info *info);
/* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
linker for every symbol which is defined by a dynamic object and linker for every symbol which is defined by a dynamic object and
referenced by a regular object. This is called after all the referenced by a regular object. This is called after all the

12
bfd/elf64-ppc.c
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@ -88,6 +88,7 @@ static bfd_vma opd_entry_value
#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
#define elf_backend_check_directives ppc64_elf_check_directives #define elf_backend_check_directives ppc64_elf_check_directives
#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
#define elf_backend_check_relocs ppc64_elf_check_relocs #define elf_backend_check_relocs ppc64_elf_check_relocs
#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
@ -4247,6 +4248,17 @@ ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
return TRUE; return TRUE;
} }
/* Undo hash table changes when an --as-needed input file is determined
not to be needed. */
static bfd_boolean
ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info)
{
ppc_hash_table (info)->dot_syms = NULL;
return TRUE;
}
static bfd_boolean static bfd_boolean
update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
unsigned long r_symndx, bfd_vma r_addend, int tls_type) unsigned long r_symndx, bfd_vma r_addend, int tls_type)

2
bfd/elflink.c
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@ -4251,6 +4251,8 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
unsigned int i; unsigned int i;
/* Restore the symbol table. */ /* Restore the symbol table. */
if (bed->as_needed_cleanup)
(*bed->as_needed_cleanup) (abfd, info);
old_hash = (char *) old_tab + tabsize; old_hash = (char *) old_tab + tabsize;
old_ent = (char *) old_hash + hashsize; old_ent = (char *) old_hash + hashsize;
sym_hash = elf_sym_hashes (abfd); sym_hash = elf_sym_hashes (abfd);

4
bfd/elfxx-target.h
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@ -372,6 +372,9 @@
#ifndef elf_backend_check_directives #ifndef elf_backend_check_directives
#define elf_backend_check_directives 0 #define elf_backend_check_directives 0
#endif #endif
#ifndef elf_backend_as_needed_cleanup
#define elf_backend_as_needed_cleanup 0
#endif
#ifndef elf_backend_adjust_dynamic_symbol #ifndef elf_backend_adjust_dynamic_symbol
#define elf_backend_adjust_dynamic_symbol 0 #define elf_backend_adjust_dynamic_symbol 0
#endif #endif
@ -604,6 +607,7 @@ static struct elf_backend_data elfNN_bed =
elf_backend_omit_section_dynsym, elf_backend_omit_section_dynsym,
elf_backend_check_relocs, elf_backend_check_relocs,
elf_backend_check_directives, elf_backend_check_directives,
elf_backend_as_needed_cleanup,
elf_backend_adjust_dynamic_symbol, elf_backend_adjust_dynamic_symbol,
elf_backend_always_size_sections, elf_backend_always_size_sections,
elf_backend_size_dynamic_sections, elf_backend_size_dynamic_sections,