2005-07-25 H.J. Lu <hongjiu.lu@intel.com>
* elf-bfd.h (elf_backend_data): Add common_definition, common_section_index, common_section, and merge_symbol. (_bfd_elf_common_definition): New. (_bfd_elf_common_section_index): New. (_bfd_elf_common_section): New. * elf.c (elf_fake_sections): Don't clear sh_flags. * elflink.c (_bfd_elf_merge_symbol): Call backend merge_symbol if it is available. (is_global_data_symbol_definition): Call backend common_definition instead of checking SHN_COMMON. (elf_link_add_object_symbols): Likewise. (elf_link_output_extsym): Call backend common_section_index for common section index. (_bfd_elf_common_definition): New. (_bfd_elf_common_section_index): New. (_bfd_elf_common_section): New. * elfxx-target.h (elf_backend_common_definition): New. (elf_backend_common_section_index): New. (elf_backend_common_section): New. (elf_backend_merge_symbol): New. (elfNN_bed): Initialize common_definition, common_section_index, common_section, and merge_symbol. * section.c (BFD_FAKE_SECTION): New. (STD_SECTION): Use it. * bfd-in2.h: Regenerated.
This commit is contained in:
H.J. Lu
parent
40afd87930
commit
a4d8e49b50
7 changed files with 214 additions and 50 deletions
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@ -1,3 +1,35 @@
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2005-07-25 H.J. Lu <hongjiu.lu@intel.com>
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* elf-bfd.h (elf_backend_data): Add common_definition,
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common_section_index, common_section, and merge_symbol.
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(_bfd_elf_common_definition): New.
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(_bfd_elf_common_section_index): New.
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(_bfd_elf_common_section): New.
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* elf.c (elf_fake_sections): Don't clear sh_flags.
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* elflink.c (_bfd_elf_merge_symbol): Call backend merge_symbol
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if it is available.
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(is_global_data_symbol_definition): Call backend
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common_definition instead of checking SHN_COMMON.
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(elf_link_add_object_symbols): Likewise.
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(elf_link_output_extsym): Call backend common_section_index
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for common section index.
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(_bfd_elf_common_definition): New.
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(_bfd_elf_common_section_index): New.
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(_bfd_elf_common_section): New.
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* elfxx-target.h (elf_backend_common_definition): New.
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(elf_backend_common_section_index): New.
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(elf_backend_common_section): New.
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(elf_backend_merge_symbol): New.
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(elfNN_bed): Initialize common_definition, common_section_index,
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common_section, and merge_symbol.
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* section.c (BFD_FAKE_SECTION): New.
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(STD_SECTION): Use it.
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* bfd-in2.h: Regenerated.
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2005-07-23 Olaf Hering <olh@suse.de>
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2005-07-23 Olaf Hering <olh@suse.de>
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* elflink.c (elf_link_input_bfd): Add '\n' for linker einfo
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* elflink.c (elf_link_input_bfd): Add '\n' for linker einfo
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@ -1551,6 +1551,47 @@ extern const struct bfd_symbol * const bfd_ind_symbol;
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#define bfd_section_removed_from_list(ABFD, S) \
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#define bfd_section_removed_from_list(ABFD, S) \
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((S)->next == NULL ? (ABFD)->section_last != (S) : (S)->next->prev != (S))
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((S)->next == NULL ? (ABFD)->section_last != (S) : (S)->next->prev != (S))
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#define BFD_FAKE_SECTION(SEC, FLAGS, SYM, SYM_PTR, NAME, IDX) \
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/* name, id, index, next, prev, flags, user_set_vma, */ \
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{ NAME, IDX, 0, NULL, NULL, FLAGS, 0, \
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\
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/* linker_mark, linker_has_input, gc_mark, gc_mark_from_eh, */ \
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0, 0, 1, 0, \
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\
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/* segment_mark, sec_info_type, use_rela_p, has_tls_reloc, */ \
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0, 0, 0, 0, \
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\
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/* has_gp_reloc, need_finalize_relax, reloc_done, */ \
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0, 0, 0, \
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\
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/* vma, lma, size, rawsize */ \
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0, 0, 0, 0, \
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\
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/* output_offset, output_section, alignment_power, */ \
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0, (struct bfd_section *) &SEC, 0, \
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\
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/* relocation, orelocation, reloc_count, filepos, rel_filepos, */ \
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NULL, NULL, 0, 0, 0, \
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\
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/* line_filepos, userdata, contents, lineno, lineno_count, */ \
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0, NULL, NULL, NULL, 0, \
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\
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/* entsize, kept_section, moving_line_filepos, */ \
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0, NULL, 0, \
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\
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/* target_index, used_by_bfd, constructor_chain, owner, */ \
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0, NULL, NULL, NULL, \
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\
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/* symbol, */ \
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(struct bfd_symbol *) SYM, \
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\
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/* symbol_ptr_ptr, */ \
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(struct bfd_symbol **) SYM_PTR, \
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\
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/* map_head, map_tail */ \
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{ NULL }, { NULL } \
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}
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void bfd_section_list_clear (bfd *);
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void bfd_section_list_clear (bfd *);
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asection *bfd_get_section_by_name (bfd *abfd, const char *name);
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asection *bfd_get_section_by_name (bfd *abfd, const char *name);
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@ -969,6 +969,30 @@ struct elf_backend_data
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see elf.c. */
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see elf.c. */
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bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *);
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bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *);
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/* Is symbol defined in common section? */
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bfd_boolean (*common_definition) (Elf_Internal_Sym *);
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/* Return a common section index for section. */
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unsigned int (*common_section_index) (asection *);
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/* Return a common section for section. */
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asection *(*common_section) (asection *);
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/* Return TRUE if we can merge 2 definitions. */
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bfd_boolean (*merge_symbol) (struct bfd_link_info *,
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struct elf_link_hash_entry **,
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struct elf_link_hash_entry *,
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Elf_Internal_Sym *, asection **,
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bfd_vma *, unsigned int *,
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bfd_boolean *, bfd_boolean *,
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bfd_boolean *, bfd_boolean *,
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bfd_boolean *, bfd_boolean *,
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bfd_boolean *, bfd_boolean *,
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bfd *, asection **,
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bfd_boolean *, bfd_boolean *,
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bfd_boolean *, bfd_boolean *,
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bfd *, asection **);
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/* Used to handle bad SHF_LINK_ORDER input. */
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/* Used to handle bad SHF_LINK_ORDER input. */
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bfd_error_handler_type link_order_error_handler;
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bfd_error_handler_type link_order_error_handler;
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@ -1741,6 +1765,15 @@ extern int bfd_elf_link_record_local_dynamic_symbol
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extern bfd_boolean _bfd_elf_close_and_cleanup
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extern bfd_boolean _bfd_elf_close_and_cleanup
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(bfd *);
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(bfd *);
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extern bfd_boolean _bfd_elf_common_definition
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(Elf_Internal_Sym *);
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extern unsigned int _bfd_elf_common_section_index
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(asection *);
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extern asection *_bfd_elf_common_section
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(asection *);
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extern void _bfd_dwarf2_cleanup_debug_info
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extern void _bfd_dwarf2_cleanup_debug_info
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(bfd *);
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(bfd *);
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@ -2618,7 +2618,7 @@ elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg)
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return;
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return;
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}
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}
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this_hdr->sh_flags = 0;
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/* Don't clear sh_flags. Assembler may set additional bits. */
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if ((asect->flags & SEC_ALLOC) != 0
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if ((asect->flags & SEC_ALLOC) != 0
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|| asect->user_set_vma)
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|| asect->user_set_vma)
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@ -780,6 +780,7 @@ _bfd_elf_merge_symbol (bfd *abfd,
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bfd *oldbfd;
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bfd *oldbfd;
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bfd_boolean newdyn, olddyn, olddef, newdef, newdyncommon, olddyncommon;
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bfd_boolean newdyn, olddyn, olddef, newdef, newdyncommon, olddyncommon;
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bfd_boolean newweak, oldweak;
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bfd_boolean newweak, oldweak;
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const struct elf_backend_data *bed;
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*skip = FALSE;
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*skip = FALSE;
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*override = FALSE;
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*override = FALSE;
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@ -1121,6 +1122,19 @@ _bfd_elf_merge_symbol (bfd *abfd,
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else
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else
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olddyncommon = FALSE;
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olddyncommon = FALSE;
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/* We now know everything about the old and new symbols. We ask the
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backend to check if we can merge them. */
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bed = get_elf_backend_data (abfd);
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if (bed->merge_symbol
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&& !bed->merge_symbol (info, sym_hash, h, sym, psec, pvalue,
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pold_alignment, skip, override,
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type_change_ok, size_change_ok,
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&newdyn, &newdef, &newdyncommon, &newweak,
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abfd, &sec,
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&olddyn, &olddef, &olddyncommon, &oldweak,
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oldbfd, &oldsec))
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return FALSE;
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/* If both the old and the new symbols look like common symbols in a
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/* If both the old and the new symbols look like common symbols in a
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dynamic object, set the size of the symbol to the larger of the
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dynamic object, set the size of the symbol to the larger of the
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two. */
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two. */
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@ -1197,7 +1211,7 @@ _bfd_elf_merge_symbol (bfd *abfd,
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newdef = FALSE;
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newdef = FALSE;
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newdyncommon = FALSE;
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newdyncommon = FALSE;
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*pvalue = sym->st_size;
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*pvalue = sym->st_size;
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*psec = sec = bfd_com_section_ptr;
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*psec = sec = bed->common_section (oldsec);
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*size_change_ok = TRUE;
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*size_change_ok = TRUE;
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}
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}
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@ -2641,6 +2655,8 @@ static bfd_boolean
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is_global_data_symbol_definition (bfd *abfd ATTRIBUTE_UNUSED,
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is_global_data_symbol_definition (bfd *abfd ATTRIBUTE_UNUSED,
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Elf_Internal_Sym *sym)
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Elf_Internal_Sym *sym)
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{
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{
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const struct elf_backend_data *bed;
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/* Local symbols do not count, but target specific ones might. */
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/* Local symbols do not count, but target specific ones might. */
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if (ELF_ST_BIND (sym->st_info) != STB_GLOBAL
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if (ELF_ST_BIND (sym->st_info) != STB_GLOBAL
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&& ELF_ST_BIND (sym->st_info) < STB_LOOS)
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&& ELF_ST_BIND (sym->st_info) < STB_LOOS)
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@ -2656,7 +2672,8 @@ is_global_data_symbol_definition (bfd *abfd ATTRIBUTE_UNUSED,
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/* If the symbol is defined in the common section, then
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/* If the symbol is defined in the common section, then
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it is a common definition and so does not count. */
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it is a common definition and so does not count. */
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if (sym->st_shndx == SHN_COMMON)
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bed = get_elf_backend_data (abfd);
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if (bed->common_definition (sym))
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return FALSE;
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return FALSE;
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/* If the symbol is in a target specific section then we
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/* If the symbol is in a target specific section then we
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@ -3548,6 +3565,7 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
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bfd_boolean type_change_ok;
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bfd_boolean type_change_ok;
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bfd_boolean new_weakdef;
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bfd_boolean new_weakdef;
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bfd_boolean override;
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bfd_boolean override;
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bfd_boolean common;
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unsigned int old_alignment;
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unsigned int old_alignment;
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bfd *old_bfd;
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bfd *old_bfd;
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@ -3557,6 +3575,7 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
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sec = NULL;
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sec = NULL;
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value = isym->st_value;
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value = isym->st_value;
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*sym_hash = NULL;
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*sym_hash = NULL;
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common = bed->common_definition (isym);
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bind = ELF_ST_BIND (isym->st_info);
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bind = ELF_ST_BIND (isym->st_info);
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if (bind == STB_LOCAL)
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if (bind == STB_LOCAL)
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@ -3569,8 +3588,7 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
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}
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}
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else if (bind == STB_GLOBAL)
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else if (bind == STB_GLOBAL)
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{
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{
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if (isym->st_shndx != SHN_UNDEF
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if (isym->st_shndx != SHN_UNDEF && !common)
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&& isym->st_shndx != SHN_COMMON)
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flags = BSF_GLOBAL;
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flags = BSF_GLOBAL;
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}
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}
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else if (bind == STB_WEAK)
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else if (bind == STB_WEAK)
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@ -3861,13 +3879,12 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
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}
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}
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/* Set the alignment of a common symbol. */
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/* Set the alignment of a common symbol. */
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if ((isym->st_shndx == SHN_COMMON
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if ((common || bfd_is_com_section (sec))
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|| bfd_is_com_section (sec))
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&& h->root.type == bfd_link_hash_common)
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&& h->root.type == bfd_link_hash_common)
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{
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{
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unsigned int align;
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unsigned int align;
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if (isym->st_shndx == SHN_COMMON)
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if (common)
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align = bfd_log2 (isym->st_value);
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align = bfd_log2 (isym->st_value);
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else
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else
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{
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{
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@ -3893,7 +3910,7 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
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definition or a common symbol is ignored due to the old
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definition or a common symbol is ignored due to the old
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normal definition. We need to make sure the maximum
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normal definition. We need to make sure the maximum
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alignment is maintained. */
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alignment is maintained. */
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if ((old_alignment || isym->st_shndx == SHN_COMMON)
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if ((old_alignment || common)
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&& h->root.type != bfd_link_hash_common)
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&& h->root.type != bfd_link_hash_common)
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{
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{
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unsigned int common_align;
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unsigned int common_align;
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@ -6498,7 +6515,7 @@ elf_link_output_extsym (struct elf_link_hash_entry *h, void *data)
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case bfd_link_hash_common:
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case bfd_link_hash_common:
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input_sec = h->root.u.c.p->section;
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input_sec = h->root.u.c.p->section;
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sym.st_shndx = SHN_COMMON;
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sym.st_shndx = bed->common_section_index (input_sec);
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sym.st_value = 1 << h->root.u.c.p->alignment_power;
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sym.st_value = 1 << h->root.u.c.p->alignment_power;
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break;
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break;
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@ -9900,3 +9917,21 @@ _bfd_elf_fix_excluded_sec_syms (bfd *obfd, struct bfd_link_info *info)
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{
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{
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bfd_link_hash_traverse (info->hash, fix_syms, obfd);
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bfd_link_hash_traverse (info->hash, fix_syms, obfd);
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}
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}
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bfd_boolean
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_bfd_elf_common_definition (Elf_Internal_Sym *sym)
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{
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return sym->st_shndx == SHN_COMMON;
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}
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unsigned int
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_bfd_elf_common_section_index (asection *sec ATTRIBUTE_UNUSED)
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{
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return SHN_COMMON;
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}
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asection *
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_bfd_elf_common_section (asection *sec ATTRIBUTE_UNUSED)
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{
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return bfd_com_section_ptr;
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}
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@ -521,6 +521,22 @@
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#define elf_backend_link_order_error_handler _bfd_default_error_handler
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#define elf_backend_link_order_error_handler _bfd_default_error_handler
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#endif
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#endif
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#ifndef elf_backend_common_definition
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#define elf_backend_common_definition _bfd_elf_common_definition
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#endif
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#ifndef elf_backend_common_section_index
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#define elf_backend_common_section_index _bfd_elf_common_section_index
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#endif
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#ifndef elf_backend_common_section
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#define elf_backend_common_section _bfd_elf_common_section
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef elf_backend_merge_symbol
|
||||||
|
#define elf_backend_merge_symbol NULL
|
||||||
|
#endif
|
||||||
|
|
||||||
extern const struct elf_size_info _bfd_elfNN_size_info;
|
extern const struct elf_size_info _bfd_elfNN_size_info;
|
||||||
|
|
||||||
#ifndef INCLUDED_TARGET_FILE
|
#ifndef INCLUDED_TARGET_FILE
|
||||||
|
|
@ -590,6 +606,10 @@ static const struct elf_backend_data elfNN_bed =
|
||||||
elf_backend_ecoff_debug_swap,
|
elf_backend_ecoff_debug_swap,
|
||||||
elf_backend_bfd_from_remote_memory,
|
elf_backend_bfd_from_remote_memory,
|
||||||
elf_backend_plt_sym_val,
|
elf_backend_plt_sym_val,
|
||||||
|
elf_backend_common_definition,
|
||||||
|
elf_backend_common_section_index,
|
||||||
|
elf_backend_common_section,
|
||||||
|
elf_backend_merge_symbol,
|
||||||
elf_backend_link_order_error_handler,
|
elf_backend_link_order_error_handler,
|
||||||
elf_backend_relplt_name,
|
elf_backend_relplt_name,
|
||||||
ELF_MACHINE_ALT1,
|
ELF_MACHINE_ALT1,
|
||||||
|
|
|
||||||
|
|
@ -635,6 +635,47 @@ CODE_FRAGMENT
|
||||||
.#define bfd_section_removed_from_list(ABFD, S) \
|
.#define bfd_section_removed_from_list(ABFD, S) \
|
||||||
. ((S)->next == NULL ? (ABFD)->section_last != (S) : (S)->next->prev != (S))
|
. ((S)->next == NULL ? (ABFD)->section_last != (S) : (S)->next->prev != (S))
|
||||||
.
|
.
|
||||||
|
.#define BFD_FAKE_SECTION(SEC, FLAGS, SYM, SYM_PTR, NAME, IDX) \
|
||||||
|
. {* name, id, index, next, prev, flags, user_set_vma, *} \
|
||||||
|
. { NAME, IDX, 0, NULL, NULL, FLAGS, 0, \
|
||||||
|
. \
|
||||||
|
. {* linker_mark, linker_has_input, gc_mark, gc_mark_from_eh, *} \
|
||||||
|
. 0, 0, 1, 0, \
|
||||||
|
. \
|
||||||
|
. {* segment_mark, sec_info_type, use_rela_p, has_tls_reloc, *} \
|
||||||
|
. 0, 0, 0, 0, \
|
||||||
|
. \
|
||||||
|
. {* has_gp_reloc, need_finalize_relax, reloc_done, *} \
|
||||||
|
. 0, 0, 0, \
|
||||||
|
. \
|
||||||
|
. {* vma, lma, size, rawsize *} \
|
||||||
|
. 0, 0, 0, 0, \
|
||||||
|
. \
|
||||||
|
. {* output_offset, output_section, alignment_power, *} \
|
||||||
|
. 0, (struct bfd_section *) &SEC, 0, \
|
||||||
|
. \
|
||||||
|
. {* relocation, orelocation, reloc_count, filepos, rel_filepos, *} \
|
||||||
|
. NULL, NULL, 0, 0, 0, \
|
||||||
|
. \
|
||||||
|
. {* line_filepos, userdata, contents, lineno, lineno_count, *} \
|
||||||
|
. 0, NULL, NULL, NULL, 0, \
|
||||||
|
. \
|
||||||
|
. {* entsize, kept_section, moving_line_filepos, *} \
|
||||||
|
. 0, NULL, 0, \
|
||||||
|
. \
|
||||||
|
. {* target_index, used_by_bfd, constructor_chain, owner, *} \
|
||||||
|
. 0, NULL, NULL, NULL, \
|
||||||
|
. \
|
||||||
|
. {* symbol, *} \
|
||||||
|
. (struct bfd_symbol *) SYM, \
|
||||||
|
. \
|
||||||
|
. {* symbol_ptr_ptr, *} \
|
||||||
|
. (struct bfd_symbol **) SYM_PTR, \
|
||||||
|
. \
|
||||||
|
. {* map_head, map_tail *} \
|
||||||
|
. { NULL }, { NULL } \
|
||||||
|
. }
|
||||||
|
.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
/* We use a macro to initialize the static asymbol structures because
|
/* We use a macro to initialize the static asymbol structures because
|
||||||
|
|
@ -662,46 +703,8 @@ static const asymbol global_syms[] =
|
||||||
|
|
||||||
#define STD_SECTION(SEC, FLAGS, SYM, NAME, IDX) \
|
#define STD_SECTION(SEC, FLAGS, SYM, NAME, IDX) \
|
||||||
const asymbol * const SYM = (asymbol *) &global_syms[IDX]; \
|
const asymbol * const SYM = (asymbol *) &global_syms[IDX]; \
|
||||||
asection SEC = \
|
asection SEC = BFD_FAKE_SECTION(SEC, FLAGS, &global_syms[IDX], &SYM, \
|
||||||
/* name, id, index, next, prev, flags, user_set_vma, */ \
|
NAME, IDX)
|
||||||
{ NAME, IDX, 0, NULL, NULL, FLAGS, 0, \
|
|
||||||
\
|
|
||||||
/* linker_mark, linker_has_input, gc_mark, gc_mark_from_eh, */ \
|
|
||||||
0, 0, 1, 0, \
|
|
||||||
\
|
|
||||||
/* segment_mark, sec_info_type, use_rela_p, has_tls_reloc, */ \
|
|
||||||
0, 0, 0, 0, \
|
|
||||||
\
|
|
||||||
/* has_gp_reloc, need_finalize_relax, reloc_done, */ \
|
|
||||||
0, 0, 0, \
|
|
||||||
\
|
|
||||||
/* vma, lma, size, rawsize */ \
|
|
||||||
0, 0, 0, 0, \
|
|
||||||
\
|
|
||||||
/* output_offset, output_section, alignment_power, */ \
|
|
||||||
0, (struct bfd_section *) &SEC, 0, \
|
|
||||||
\
|
|
||||||
/* relocation, orelocation, reloc_count, filepos, rel_filepos, */ \
|
|
||||||
NULL, NULL, 0, 0, 0, \
|
|
||||||
\
|
|
||||||
/* line_filepos, userdata, contents, lineno, lineno_count, */ \
|
|
||||||
0, NULL, NULL, NULL, 0, \
|
|
||||||
\
|
|
||||||
/* entsize, kept_section, moving_line_filepos, */ \
|
|
||||||
0, NULL, 0, \
|
|
||||||
\
|
|
||||||
/* target_index, used_by_bfd, constructor_chain, owner, */ \
|
|
||||||
0, NULL, NULL, NULL, \
|
|
||||||
\
|
|
||||||
/* symbol, */ \
|
|
||||||
(struct bfd_symbol *) &global_syms[IDX], \
|
|
||||||
\
|
|
||||||
/* symbol_ptr_ptr, */ \
|
|
||||||
(struct bfd_symbol **) &SYM, \
|
|
||||||
\
|
|
||||||
/* map_head, map_tail */ \
|
|
||||||
{ NULL }, { NULL } \
|
|
||||||
}
|
|
||||||
|
|
||||||
STD_SECTION (bfd_com_section, SEC_IS_COMMON, bfd_com_symbol,
|
STD_SECTION (bfd_com_section, SEC_IS_COMMON, bfd_com_symbol,
|
||||||
BFD_COM_SECTION_NAME, 0);
|
BFD_COM_SECTION_NAME, 0);
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue