1 /* BFD back-end data structures for ELF files.
2 Copyright (C) 1992-2019 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
25 #include "elf/common.h"
26 #include "elf/external.h"
27 #include "elf/internal.h"
34 /* The number of entries in a section is its size divided by the size
35 of a single entry. This is normally only applicable to reloc and
36 symbol table sections.
37 PR 9934: It is possible to have relocations that do not refer to
38 symbols, thus it is also possible to have a relocation section in
39 an object file, but no symbol table. */
40 #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0)
42 /* If size isn't specified as 64 or 32, NAME macro should fail. */
45 #define NAME(x, y) x ## 64 ## _ ## y
48 #define NAME(x, y) x ## 32 ## _ ## y
53 #define NAME(x, y) x ## NOSIZE ## _ ## y
56 #define ElfNAME(X) NAME(Elf,X)
57 #define elfNAME(X) NAME(elf,X)
59 /* Information held for an ELF symbol. The first field is the
60 corresponding asymbol. Every symbol is an ELF file is actually a
61 pointer to this structure, although it is often handled as a
62 pointer to an asymbol. */
68 /* ELF symbol information. */
69 Elf_Internal_Sym internal_elf_sym
;
70 /* Backend specific information. */
73 unsigned int hppa_arg_reloc
;
79 /* Version information. This is from an Elf_Internal_Versym
80 structure in a SHT_GNU_versym section. It is zero if there is no
81 version information. */
82 unsigned short version
;
86 struct elf_strtab_hash
;
92 bfd_signed_vma refcount
;
94 struct got_entry
*glist
;
95 struct plt_entry
*plist
;
98 struct elf_link_virtual_table_entry
100 /* Virtual table entry use information. This array is nominally of size
101 size/sizeof(target_void_pointer), though we have to be able to assume
102 and track a size while the symbol is still undefined. It is indexed
103 via offset/sizeof(target_void_pointer). */
107 /* Virtual table derivation info. */
108 struct elf_link_hash_entry
*parent
;
111 /* ELF symbol version. */
112 enum elf_symbol_version
120 /* ELF linker hash table entries. */
122 struct elf_link_hash_entry
124 struct bfd_link_hash_entry root
;
126 /* Symbol index in output file. This is initialized to -1. It is
127 set to -2 if the symbol is used by a reloc. It is set to -3 if
128 this symbol is defined in a discarded section. */
131 /* Symbol index as a dynamic symbol. Initialized to -1, and remains
132 -1 if this is not a dynamic symbol. */
133 /* ??? Note that this is consistently used as a synonym for tests
134 against whether we can perform various simplifying transformations
135 to the code. (E.g. changing a pc-relative jump to a PLT entry
136 into a pc-relative jump to the target function.) That test, which
137 is often relatively complex, and someplaces wrong or incomplete,
138 should really be replaced by a predicate in elflink.c.
140 End result: this field -1 does not indicate that the symbol is
141 not in the dynamic symbol table, but rather that the symbol is
142 not visible outside this DSO. */
145 /* If this symbol requires an entry in the global offset table, the
146 processor specific backend uses this field to track usage and
147 final offset. Two schemes are supported: The first assumes that
148 a symbol may only have one GOT entry, and uses REFCOUNT until
149 size_dynamic_sections, at which point the contents of the .got is
150 fixed. Afterward, if OFFSET is -1, then the symbol does not
151 require a global offset table entry. The second scheme allows
152 multiple GOT entries per symbol, managed via a linked list
153 pointed to by GLIST. */
154 union gotplt_union got
;
156 /* Same, but tracks a procedure linkage table entry. */
157 union gotplt_union plt
;
162 /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
163 unsigned int type
: 8;
165 /* Symbol st_other value, symbol visibility. */
166 unsigned int other
: 8;
168 /* The symbol's st_target_internal value (see Elf_Internal_Sym). */
169 unsigned int target_internal
: 8;
171 /* Symbol is referenced by a non-shared object (other than the object
172 in which it is defined). */
173 unsigned int ref_regular
: 1;
174 /* Symbol is defined by a non-shared object. */
175 unsigned int def_regular
: 1;
176 /* Symbol is referenced by a shared object. */
177 unsigned int ref_dynamic
: 1;
178 /* Symbol is defined by a shared object. */
179 unsigned int def_dynamic
: 1;
180 /* Symbol has a non-weak reference from a non-shared object (other than
181 the object in which it is defined). */
182 unsigned int ref_regular_nonweak
: 1;
183 /* Dynamic symbol has been adjustd. */
184 unsigned int dynamic_adjusted
: 1;
185 /* Symbol needs a copy reloc. */
186 unsigned int needs_copy
: 1;
187 /* Symbol needs a procedure linkage table entry. */
188 unsigned int needs_plt
: 1;
189 /* Symbol appears in a non-ELF input file. */
190 unsigned int non_elf
: 1;
191 /* Symbol version information. */
192 ENUM_BITFIELD (elf_symbol_version
) versioned
: 2;
193 /* Symbol was forced to local scope due to a version script file. */
194 unsigned int forced_local
: 1;
195 /* Symbol was forced to be dynamic due to a version script file. */
196 unsigned int dynamic
: 1;
197 /* Symbol was marked during garbage collection. */
198 unsigned int mark
: 1;
199 /* Symbol is referenced by a non-GOT/non-PLT relocation. This is
200 not currently set by all the backends. */
201 unsigned int non_got_ref
: 1;
202 /* Symbol has a definition in a shared object.
203 FIXME: There is no real need for this field if def_dynamic is never
204 cleared and all places that test def_dynamic also test def_regular. */
205 unsigned int dynamic_def
: 1;
206 /* Symbol has a non-weak reference from a shared object. */
207 unsigned int ref_dynamic_nonweak
: 1;
208 /* Symbol is referenced with a relocation where C/C++ pointer equality
210 unsigned int pointer_equality_needed
: 1;
211 /* Symbol is a unique global symbol. */
212 unsigned int unique_global
: 1;
213 /* Symbol is defined by a shared library with non-default visibility
214 in a read/write section. */
215 unsigned int protected_def
: 1;
216 /* Symbol is __start_SECNAME or __stop_SECNAME to mark section
218 unsigned int start_stop
: 1;
219 /* Symbol is or was a weak defined symbol from a dynamic object with
220 a strong defined symbol alias. U.ALIAS points to a list of aliases,
221 the definition having is_weakalias clear. */
222 unsigned int is_weakalias
: 1;
224 /* String table index in .dynstr if this is a dynamic symbol. */
225 unsigned long dynstr_index
;
229 /* Points to a circular list of non-function symbol aliases. */
230 struct elf_link_hash_entry
*alias
;
232 /* Hash value of the name computed using the ELF hash function.
233 Used part way through size_dynamic_sections, after we've finished
235 unsigned long elf_hash_value
;
238 /* Version information. */
241 /* This field is used for a symbol which is not defined in a
242 regular object. It points to the version information read in
243 from the dynamic object. */
244 Elf_Internal_Verdef
*verdef
;
245 /* This field is used for a symbol which is defined in a regular
246 object. It is set up in size_dynamic_sections. It points to
247 the version information we should write out for this symbol. */
248 struct bfd_elf_version_tree
*vertree
;
253 /* For __start_SECNAME and __stop_SECNAME symbols, record the first
254 input section whose section name is SECNAME. */
255 asection
*start_stop_section
;
257 /* Vtable information. */
258 struct elf_link_virtual_table_entry
*vtable
;
262 /* Return the strong definition for a weak symbol with aliases. */
264 static inline struct elf_link_hash_entry
*
265 weakdef (struct elf_link_hash_entry
*h
)
267 while (h
->is_weakalias
)
272 /* Will references to this symbol always reference the symbol
274 #define SYMBOL_REFERENCES_LOCAL(INFO, H) \
275 _bfd_elf_symbol_refs_local_p (H, INFO, 0)
277 /* Will _calls_ to this symbol always call the version in this object? */
278 #define SYMBOL_CALLS_LOCAL(INFO, H) \
279 _bfd_elf_symbol_refs_local_p (H, INFO, 1)
281 /* Whether an undefined weak symbol should resolve to its link-time
282 value, even in PIC or PIE objects. */
283 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
284 ((H)->root.type == bfd_link_hash_undefweak \
285 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
286 || (INFO)->dynamic_undefined_weak == 0))
288 /* Common symbols that are turned into definitions don't have the
289 DEF_REGULAR flag set, so they might appear to be undefined.
290 Symbols defined in linker scripts also don't have DEF_REGULAR set. */
291 #define ELF_COMMON_DEF_P(H) \
293 && !(H)->def_dynamic \
294 && (H)->root.type == bfd_link_hash_defined)
296 /* Records local symbols to be emitted in the dynamic symbol table. */
298 struct elf_link_local_dynamic_entry
300 struct elf_link_local_dynamic_entry
*next
;
302 /* The input bfd this symbol came from. */
305 /* The index of the local symbol being copied. */
308 /* The index in the outgoing dynamic symbol table. */
311 /* A copy of the input symbol. */
312 Elf_Internal_Sym isym
;
315 struct elf_link_loaded_list
317 struct elf_link_loaded_list
*next
;
321 /* Structures used by the eh_frame optimization code. */
326 /* If REMOVED == 1, this is the CIE that the FDE originally used.
327 The CIE belongs to the same .eh_frame input section as the FDE.
329 If REMOVED == 0, this is the CIE that we have chosen to use for
330 the output FDE. The CIE's REMOVED field is also 0, but the CIE
331 might belong to a different .eh_frame input section from the FDE.
333 May be NULL to signify that the FDE should be discarded. */
334 struct eh_cie_fde
*cie_inf
;
335 struct eh_cie_fde
*next_for_section
;
338 /* CIEs have three states:
340 - REMOVED && !MERGED: Slated for removal because we haven't yet
341 proven that an FDE needs it. FULL_CIE, if nonnull, points to
342 more detailed information about the CIE.
344 - REMOVED && MERGED: We have merged this CIE with MERGED_WITH,
345 which may not belong to the same input section.
347 - !REMOVED: We have decided to keep this CIE. SEC is the
348 .eh_frame input section that contains the CIE. */
350 struct cie
*full_cie
;
351 struct eh_cie_fde
*merged_with
;
355 /* The offset of the personality data from the start of the CIE,
356 or 0 if the CIE doesn't have any. */
357 unsigned int personality_offset
: 8;
359 /* Length of augmentation. aug_str_len is the length of the
360 string including null terminator. aug_data_len is the length
361 of the rest up to the initial insns. */
362 unsigned int aug_str_len
: 3;
363 unsigned int aug_data_len
: 5;
365 /* True if we have marked relocations associated with this CIE. */
366 unsigned int gc_mark
: 1;
368 /* True if we have decided to turn an absolute LSDA encoding into
369 a PC-relative one. */
370 unsigned int make_lsda_relative
: 1;
372 /* True if we have decided to turn an absolute personality
373 encoding into a PC-relative one. */
374 unsigned int make_per_encoding_relative
: 1;
376 /* True if the CIE contains personality data and if that
377 data uses a PC-relative encoding. Always true when
378 make_per_encoding_relative is. */
379 unsigned int per_encoding_relative
: 1;
381 /* True if the CIE contains personality data aligned to a
382 multiple of eight bytes. */
383 unsigned int per_encoding_aligned8
: 1;
385 /* True if we need to add an 'R' (FDE encoding) entry to the
386 CIE's augmentation data. */
387 unsigned int add_fde_encoding
: 1;
389 /* True if we have merged this CIE with another. */
390 unsigned int merged
: 1;
393 unsigned int pad1
: 9;
396 unsigned int reloc_index
;
399 unsigned int new_offset
;
400 unsigned int fde_encoding
: 8;
401 unsigned int lsda_encoding
: 8;
402 unsigned int lsda_offset
: 8;
404 /* True if this entry represents a CIE, false if it represents an FDE. */
405 unsigned int cie
: 1;
407 /* True if this entry is currently marked for removal. */
408 unsigned int removed
: 1;
410 /* True if we need to add a 'z' (augmentation size) entry to the CIE's
411 augmentation data, and an associated byte to each of the CIE's FDEs. */
412 unsigned int add_augmentation_size
: 1;
414 /* True if we have decided to convert absolute FDE relocations into
415 relative ones. This applies to the first relocation in the FDE,
416 which is against the code that the FDE describes. */
417 unsigned int make_relative
: 1;
420 unsigned int pad1
: 4;
422 unsigned int *set_loc
;
425 struct eh_frame_sec_info
429 struct eh_cie_fde entry
[1];
432 struct eh_frame_array_ent
441 #define DWARF2_EH_HDR 1
442 #define COMPACT_EH_HDR 2
444 /* Endian-neutral code indicating that a function cannot be unwound. */
445 #define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01
447 struct dwarf_eh_frame_hdr_info
450 unsigned int fde_count
;
451 /* TRUE if .eh_frame_hdr should contain the sorted search table.
452 We build it if we successfully read all .eh_frame input sections
453 and recognize them. */
455 struct eh_frame_array_ent
*array
;
458 struct compact_eh_frame_hdr_info
460 unsigned int allocated_entries
;
461 /* eh_frame_entry fragments. */
465 struct eh_frame_hdr_info
468 unsigned int array_count
;
469 bfd_boolean frame_hdr_is_compact
;
472 struct dwarf_eh_frame_hdr_info dwarf
;
473 struct compact_eh_frame_hdr_info compact
;
478 /* Enum used to identify target specific extensions to the elf_obj_tdata
479 and elf_link_hash_table structures. Note the enums deliberately start
480 from 1 so that we can detect an uninitialized field. The generic value
481 is last so that additions to this enum do not need to modify more than
485 AARCH64_ELF_DATA
= 1,
525 struct elf_sym_strtab
527 Elf_Internal_Sym sym
;
528 unsigned long dest_index
;
529 unsigned long destshndx_index
;
532 struct bfd_link_needed_list
534 struct bfd_link_needed_list
*next
;
539 /* ELF linker hash table. */
541 struct elf_link_hash_table
543 struct bfd_link_hash_table root
;
545 /* An identifier used to distinguish different target
546 specific extensions to this structure. */
547 enum elf_target_id hash_table_id
;
549 /* Whether we have created the special dynamic sections required
550 when linking against or generating a shared object. */
551 bfd_boolean dynamic_sections_created
;
553 /* Whether dynamic relocations are present. */
554 bfd_boolean dynamic_relocs
;
556 /* True if this target has relocatable executables, so needs dynamic
558 bfd_boolean is_relocatable_executable
;
560 /* The BFD used to hold special sections created by the linker.
561 This will be the first BFD found which requires these sections to
565 /* The value to use when initialising got.refcount/offset and
566 plt.refcount/offset in an elf_link_hash_entry. Set to zero when
567 the values are refcounts. Set to init_got_offset/init_plt_offset
568 in size_dynamic_sections when the values may be offsets. */
569 union gotplt_union init_got_refcount
;
570 union gotplt_union init_plt_refcount
;
572 /* The value to use for got.refcount/offset and plt.refcount/offset
573 when the values may be offsets. Normally (bfd_vma) -1. */
574 union gotplt_union init_got_offset
;
575 union gotplt_union init_plt_offset
;
577 /* The number of symbols found in the link which is intended for the
578 mandatory DT_SYMTAB tag (.dynsym section) in .dynamic section. */
579 bfd_size_type dynsymcount
;
580 bfd_size_type local_dynsymcount
;
582 /* The string table of dynamic symbols, which becomes the .dynstr
584 struct elf_strtab_hash
*dynstr
;
586 /* The number of symbol strings found in the link which must be put
587 into the .strtab section. */
588 bfd_size_type strtabcount
;
590 /* The array size of the symbol string table, which becomes the
592 bfd_size_type strtabsize
;
594 /* The array of strings, which becomes the .strtab section. */
595 struct elf_sym_strtab
*strtab
;
597 /* The number of buckets in the hash table in the .hash section.
598 This is based on the number of dynamic symbols. */
599 bfd_size_type bucketcount
;
601 /* A linked list of DT_NEEDED names found in dynamic objects
602 included in the link. */
603 struct bfd_link_needed_list
*needed
;
605 /* Sections in the output bfd that provides a section symbol
606 to be used by relocations emitted against local symbols.
607 Most targets will not use data_index_section. */
608 asection
*text_index_section
;
609 asection
*data_index_section
;
611 /* The _GLOBAL_OFFSET_TABLE_ symbol. */
612 struct elf_link_hash_entry
*hgot
;
614 /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */
615 struct elf_link_hash_entry
*hplt
;
617 /* The _DYNAMIC symbol. */
618 struct elf_link_hash_entry
*hdynamic
;
620 /* A pointer to information used to merge SEC_MERGE sections. */
623 /* Used to link stabs in sections. */
624 struct stab_info stab_info
;
626 /* Used by eh_frame code when editing .eh_frame. */
627 struct eh_frame_hdr_info eh_info
;
629 /* A linked list of local symbols to be added to .dynsym. */
630 struct elf_link_local_dynamic_entry
*dynlocal
;
632 /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
633 objects included in the link. */
634 struct bfd_link_needed_list
*runpath
;
636 /* Cached first output tls section and size of PT_TLS segment. */
638 bfd_size_type tls_size
;
640 /* A linked list of BFD's loaded in the link. */
641 struct elf_link_loaded_list
*loaded
;
643 /* Short-cuts to get to dynamic linker sections. */
652 asection
*sreldynrelro
;
660 /* Look up an entry in an ELF linker hash table. */
662 #define elf_link_hash_lookup(table, string, create, copy, follow) \
663 ((struct elf_link_hash_entry *) \
664 bfd_link_hash_lookup (&(table)->root, (string), (create), \
667 /* Traverse an ELF linker hash table. */
669 #define elf_link_hash_traverse(table, func, info) \
670 (bfd_link_hash_traverse \
672 (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
675 /* Get the ELF linker hash table from a link_info structure. */
677 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
679 #define elf_hash_table_id(table) ((table) -> hash_table_id)
681 /* Returns TRUE if the hash table is a struct elf_link_hash_table. */
682 #define is_elf_hash_table(htab) \
683 (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
685 /* Used by bfd_sym_from_r_symndx to cache a small number of local
687 #define LOCAL_SYM_CACHE_SIZE 32
691 unsigned long indx
[LOCAL_SYM_CACHE_SIZE
];
692 Elf_Internal_Sym sym
[LOCAL_SYM_CACHE_SIZE
];
695 /* Constant information held for an ELF backend. */
697 struct elf_size_info
{
698 unsigned char sizeof_ehdr
, sizeof_phdr
, sizeof_shdr
;
699 unsigned char sizeof_rel
, sizeof_rela
, sizeof_sym
, sizeof_dyn
, sizeof_note
;
701 /* The size of entries in the .hash section. */
702 unsigned char sizeof_hash_entry
;
704 /* The number of internal relocations to allocate per external
706 unsigned char int_rels_per_ext_rel
;
707 /* We use some fixed size arrays. This should be large enough to
708 handle all back-ends. */
709 #define MAX_INT_RELS_PER_EXT_REL 3
711 unsigned char arch_size
, log_file_align
;
712 unsigned char elfclass
, ev_current
;
713 int (*write_out_phdrs
)
714 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
716 (*write_shdrs_and_ehdr
) (bfd
*);
717 bfd_boolean (*checksum_contents
)
718 (bfd
* , void (*) (const void *, size_t, void *), void *);
720 (bfd
*, asection
*, void *);
721 bfd_boolean (*swap_symbol_in
)
722 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
723 void (*swap_symbol_out
)
724 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
725 bfd_boolean (*slurp_reloc_table
)
726 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
727 long (*slurp_symbol_table
)
728 (bfd
*, asymbol
**, bfd_boolean
);
730 (bfd
*, const void *, Elf_Internal_Dyn
*);
732 (bfd
*, const Elf_Internal_Dyn
*, void *);
734 /* This function is called to swap in a REL relocation. If an
735 external relocation corresponds to more than one internal
736 relocation, then all relocations are swapped in at once. */
737 void (*swap_reloc_in
)
738 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
740 /* This function is called to swap out a REL relocation. */
741 void (*swap_reloc_out
)
742 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
744 /* This function is called to swap in a RELA relocation. If an
745 external relocation corresponds to more than one internal
746 relocation, then all relocations are swapped in at once. */
747 void (*swap_reloca_in
)
748 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
750 /* This function is called to swap out a RELA relocation. */
751 void (*swap_reloca_out
)
752 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
755 #define elf_symbol_from(ABFD,S) \
756 (((S)->the_bfd != NULL \
757 && (S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
758 && (S)->the_bfd->tdata.elf_obj_data != 0) \
759 ? (elf_symbol_type *) (S) \
762 enum elf_reloc_type_class
{
764 reloc_class_relative
,
770 struct elf_reloc_cookie
772 Elf_Internal_Rela
*rels
, *rel
, *relend
;
773 Elf_Internal_Sym
*locsyms
;
777 struct elf_link_hash_entry
**sym_hashes
;
779 bfd_boolean bad_symtab
;
782 /* The level of IRIX compatibility we're striving for. */
790 /* Mapping of ELF section names and types. */
791 struct bfd_elf_special_section
794 unsigned int prefix_length
;
795 /* 0 means name must match PREFIX exactly.
796 -1 means name must start with PREFIX followed by an arbitrary string.
797 -2 means name must match PREFIX exactly or consist of PREFIX followed
798 by a dot then anything.
799 > 0 means name must start with the first PREFIX_LENGTH chars of
800 PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */
801 signed int suffix_length
;
806 enum action_discarded
812 typedef asection
* (*elf_gc_mark_hook_fn
)
813 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
814 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
816 enum elf_property_kind
818 /* A new property. */
819 property_unknown
= 0,
820 /* A property ignored by backend. */
822 /* A corrupt property reported by backend. */
824 /* A property should be removed due to property merge. */
826 /* A property which is a number. */
830 typedef struct elf_property
832 unsigned int pr_type
;
833 unsigned int pr_datasz
;
836 /* For property_number, this is a number. */
838 /* Add a new one if elf_property_kind is updated. */
840 enum elf_property_kind pr_kind
;
843 typedef struct elf_property_list
845 struct elf_property_list
*next
;
846 struct elf_property property
;
849 struct bfd_elf_section_reloc_data
;
851 struct elf_backend_data
853 /* The architecture for this backend. */
854 enum bfd_architecture arch
;
856 /* An identifier used to distinguish different target specific
857 extensions to elf_obj_tdata and elf_link_hash_table structures. */
858 enum elf_target_id target_id
;
860 /* The ELF machine code (EM_xxxx) for this backend. */
861 int elf_machine_code
;
866 /* The maximum page size for this backend. */
869 /* The minimum page size for this backend. An input object will not be
870 considered page aligned unless its sections are correctly aligned for
871 pages at least this large. May be smaller than maxpagesize. */
874 /* The common page size for this backend. */
875 bfd_vma commonpagesize
;
877 /* The value of commonpagesize to use when -z relro for this backend. */
878 bfd_vma relropagesize
;
880 /* The BFD flags applied to sections created for dynamic linking. */
881 flagword dynamic_sec_flags
;
883 /* Architecture-specific data for this backend.
884 This is actually a pointer to some type like struct elf_ARCH_data. */
885 const void *arch_data
;
887 /* A function to translate an ELF RELA relocation to a BFD arelent
888 structure. Returns TRUE upon success, FALSE otherwise. */
889 bfd_boolean (*elf_info_to_howto
)
890 (bfd
*, arelent
*, Elf_Internal_Rela
*);
892 /* A function to translate an ELF REL relocation to a BFD arelent
893 structure. Returns TRUE upon success, FALSE otherwise. */
894 bfd_boolean (*elf_info_to_howto_rel
)
895 (bfd
*, arelent
*, Elf_Internal_Rela
*);
897 /* A function to determine whether a symbol is global when
898 partitioning the symbol table into local and global symbols.
899 This should be NULL for most targets, in which case the correct
900 thing will be done. MIPS ELF, at least on the Irix 5, has
901 special requirements. */
902 bfd_boolean (*elf_backend_sym_is_global
)
905 /* The remaining functions are hooks which are called only if they
908 /* A function to permit a backend specific check on whether a
909 particular BFD format is relevant for an object file, and to
910 permit the backend to set any global information it wishes. When
911 this is called elf_elfheader is set, but anything else should be
912 used with caution. If this returns FALSE, the check_format
913 routine will return a bfd_error_wrong_format error. */
914 bfd_boolean (*elf_backend_object_p
)
917 /* A function to do additional symbol processing when reading the
918 ELF symbol table. This is where any processor-specific special
919 section indices are handled. */
920 void (*elf_backend_symbol_processing
)
923 /* A function to do additional symbol processing after reading the
924 entire ELF symbol table. */
925 bfd_boolean (*elf_backend_symbol_table_processing
)
926 (bfd
*, elf_symbol_type
*, unsigned int);
928 /* A function to set the type of the info field. Processor-specific
929 types should be handled here. */
930 int (*elf_backend_get_symbol_type
)
931 (Elf_Internal_Sym
*, int);
933 /* A function to return the linker hash table entry of a symbol that
934 might be satisfied by an archive symbol. */
935 struct elf_link_hash_entry
* (*elf_backend_archive_symbol_lookup
)
936 (bfd
*, struct bfd_link_info
*, const char *);
938 /* Return true if local section symbols should have a non-null st_name.
939 NULL implies false. */
940 bfd_boolean (*elf_backend_name_local_section_symbols
)
943 /* A function to do additional processing on the ELF section header
944 just before writing it out. This is used to set the flags and
945 type fields for some sections, or to actually write out data for
947 bfd_boolean (*elf_backend_section_processing
)
948 (bfd
*, Elf_Internal_Shdr
*);
950 /* A function to handle unusual section types when creating BFD
951 sections from ELF sections. */
952 bfd_boolean (*elf_backend_section_from_shdr
)
953 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
955 /* A function to convert machine dependent ELF section header flags to
956 BFD internal section header flags. */
957 bfd_boolean (*elf_backend_section_flags
)
958 (flagword
*, const Elf_Internal_Shdr
*);
960 /* A function that returns a struct containing ELF section flags and
961 type for the given BFD section. */
962 const struct bfd_elf_special_section
* (*get_sec_type_attr
)
965 /* A function to handle unusual program segment types when creating BFD
966 sections from ELF program segments. */
967 bfd_boolean (*elf_backend_section_from_phdr
)
968 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
970 /* A function to set up the ELF section header for a BFD section in
971 preparation for writing it out. This is where the flags and type
972 fields are set for unusual sections. */
973 bfd_boolean (*elf_backend_fake_sections
)
974 (bfd
*, Elf_Internal_Shdr
*, asection
*);
976 /* A function to get the ELF section index for a BFD section. If
977 this returns TRUE, the section was found. If it is a normal ELF
978 section, *RETVAL should be left unchanged. If it is not a normal
979 ELF section *RETVAL should be set to the SHN_xxxx index. */
980 bfd_boolean (*elf_backend_section_from_bfd_section
)
981 (bfd
*, asection
*, int *retval
);
983 /* If this field is not NULL, it is called by the add_symbols phase
984 of a link just before adding a symbol to the global linker hash
985 table. It may modify any of the fields as it wishes. If *NAME
986 is set to NULL, the symbol will be skipped rather than being
987 added to the hash table. This function is responsible for
988 handling all processor dependent symbol bindings and section
989 indices, and must set at least *FLAGS and *SEC for each processor
990 dependent case; failure to do so will cause a link error. */
991 bfd_boolean (*elf_add_symbol_hook
)
992 (bfd
*abfd
, struct bfd_link_info
*info
, Elf_Internal_Sym
*,
993 const char **name
, flagword
*flags
, asection
**sec
, bfd_vma
*value
);
995 /* If this field is not NULL, it is called by the elf_link_output_sym
996 phase of a link for each symbol which will appear in the object file.
997 On error, this function returns 0. 1 is returned when the symbol
998 should be output, 2 is returned when the symbol should be discarded. */
999 int (*elf_backend_link_output_symbol_hook
)
1000 (struct bfd_link_info
*info
, const char *, Elf_Internal_Sym
*,
1001 asection
*, struct elf_link_hash_entry
*);
1003 /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
1004 linker the first time it encounters a dynamic object in the link.
1005 This function must create any sections required for dynamic
1006 linking. The ABFD argument is a dynamic object. The .interp,
1007 .dynamic, .dynsym, .dynstr, and .hash functions have already been
1008 created, and this function may modify the section flags if
1009 desired. This function will normally create the .got and .plt
1010 sections, but different backends have different requirements. */
1011 bfd_boolean (*elf_backend_create_dynamic_sections
)
1012 (bfd
*abfd
, struct bfd_link_info
*info
);
1014 /* When creating a shared library, determine whether to omit the
1015 dynamic symbol for the section. */
1016 bfd_boolean (*elf_backend_omit_section_dynsym
)
1017 (bfd
*output_bfd
, struct bfd_link_info
*info
, asection
*osec
);
1019 /* Return TRUE if relocations of targets are compatible to the extent
1020 that CHECK_RELOCS will properly process them. PR 4424. */
1021 bfd_boolean (*relocs_compatible
) (const bfd_target
*, const bfd_target
*);
1023 /* The CHECK_RELOCS function is called by the add_symbols phase of
1024 the ELF backend linker. It is called once for each section with
1025 relocs of an object file, just after the symbols for the object
1026 file have been added to the global linker hash table. The
1027 function must look through the relocs and do any special handling
1028 required. This generally means allocating space in the global
1029 offset table, and perhaps allocating space for a reloc. The
1030 relocs are always passed as Rela structures; if the section
1031 actually uses Rel structures, the r_addend field will always be
1033 bfd_boolean (*check_relocs
)
1034 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
1035 const Elf_Internal_Rela
*relocs
);
1037 /* The CHECK_DIRECTIVES function is called once per input file by
1038 the add_symbols phase of the ELF backend linker. The function
1039 must inspect the bfd and create any additional symbols according
1040 to any custom directives in the bfd. */
1041 bfd_boolean (*check_directives
)
1042 (bfd
*abfd
, struct bfd_link_info
*info
);
1044 /* The NOTICE_AS_NEEDED function is called as the linker is about to
1045 handle an as-needed lib (ACT = notice_as_needed), and after the
1046 linker has decided to keep the lib (ACT = notice_needed) or when
1047 the lib is not needed (ACT = notice_not_needed). */
1048 bfd_boolean (*notice_as_needed
)
1049 (bfd
*abfd
, struct bfd_link_info
*info
, enum notice_asneeded_action act
);
1051 /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
1052 linker for every symbol which is defined by a dynamic object and
1053 referenced by a regular object. This is called after all the
1054 input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
1055 function has been called. The hash table entry should be
1056 bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
1057 defined in a section from a dynamic object. Dynamic object
1058 sections are not included in the final link, and this function is
1059 responsible for changing the value to something which the rest of
1060 the link can deal with. This will normally involve adding an
1061 entry to the .plt or .got or some such section, and setting the
1062 symbol to point to that. */
1063 bfd_boolean (*elf_backend_adjust_dynamic_symbol
)
1064 (struct bfd_link_info
*info
, struct elf_link_hash_entry
*h
);
1066 /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
1067 after all the linker input files have been seen but before the
1068 section sizes have been set. This is called after
1069 ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */
1070 bfd_boolean (*elf_backend_always_size_sections
)
1071 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1073 /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
1074 linker after all the linker input files have been seen but before
1075 the sections sizes have been set. This is called after
1076 ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
1077 It is only called when linking against a dynamic object. It must
1078 set the sizes of the dynamic sections, and may fill in their
1079 contents as well. The generic ELF linker can handle the .dynsym,
1080 .dynstr and .hash sections. This function must handle the
1081 .interp section and any sections created by the
1082 CREATE_DYNAMIC_SECTIONS entry point. */
1083 bfd_boolean (*elf_backend_size_dynamic_sections
)
1084 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1086 /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections
1087 we keep to use as a base for relocs and symbols. */
1088 void (*elf_backend_init_index_section
)
1089 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1091 /* The RELOCATE_SECTION function is called by the ELF backend linker
1092 to handle the relocations for a section.
1094 The relocs are always passed as Rela structures; if the section
1095 actually uses Rel structures, the r_addend field will always be
1098 This function is responsible for adjust the section contents as
1099 necessary, and (if using Rela relocs and generating a
1100 relocatable output file) adjusting the reloc addend as
1103 This function does not have to worry about setting the reloc
1104 address or the reloc symbol index.
1106 LOCAL_SYMS is a pointer to the swapped in local symbols.
1108 LOCAL_SECTIONS is an array giving the section in the input file
1109 corresponding to the st_shndx field of each local symbol.
1111 The global hash table entry for the global symbols can be found
1112 via elf_sym_hashes (input_bfd).
1114 When generating relocatable output, this function must handle
1115 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1116 going to be the section symbol corresponding to the output
1117 section, which means that the addend must be adjusted
1120 Returns FALSE on error, TRUE on success, 2 if successful and
1121 relocations should be written for this section. */
1122 int (*elf_backend_relocate_section
)
1123 (bfd
*output_bfd
, struct bfd_link_info
*info
, bfd
*input_bfd
,
1124 asection
*input_section
, bfd_byte
*contents
, Elf_Internal_Rela
*relocs
,
1125 Elf_Internal_Sym
*local_syms
, asection
**local_sections
);
1127 /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
1128 linker just before it writes a symbol out to the .dynsym section.
1129 The processor backend may make any required adjustment to the
1130 symbol. It may also take the opportunity to set contents of the
1131 dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
1132 all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
1133 on those symbols which are defined by a dynamic object. */
1134 bfd_boolean (*elf_backend_finish_dynamic_symbol
)
1135 (bfd
*output_bfd
, struct bfd_link_info
*info
,
1136 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*sym
);
1138 /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
1139 linker just before it writes all the dynamic sections out to the
1140 output file. The FINISH_DYNAMIC_SYMBOL will have been called on
1141 all dynamic symbols. */
1142 bfd_boolean (*elf_backend_finish_dynamic_sections
)
1143 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1145 /* A function to do any beginning processing needed for the ELF file
1146 before building the ELF headers and computing file positions. */
1147 void (*elf_backend_begin_write_processing
)
1148 (bfd
*, struct bfd_link_info
*);
1150 /* A function to do any final processing needed for the ELF file
1151 before writing it out. */
1152 bfd_boolean (*elf_backend_final_write_processing
)
1155 /* This function is called by get_program_header_size. It should
1156 return the number of additional program segments which this BFD
1157 will need. It should return -1 on error. */
1158 int (*elf_backend_additional_program_headers
)
1159 (bfd
*, struct bfd_link_info
*);
1161 /* This function is called to modify an existing segment map in a
1162 backend specific fashion. */
1163 bfd_boolean (*elf_backend_modify_segment_map
)
1164 (bfd
*, struct bfd_link_info
*);
1166 /* This function is called to modify program headers just before
1167 they are written. */
1168 bfd_boolean (*elf_backend_modify_program_headers
)
1169 (bfd
*, struct bfd_link_info
*);
1171 /* This function is called to see if the PHDR header should be
1172 checked for validity. */
1173 bfd_boolean (*elf_backend_allow_non_load_phdr
)
1174 (bfd
*, const Elf_Internal_Phdr
*, unsigned);
1176 /* This function is called before section garbage collection to
1177 mark entry symbol sections. */
1179 (struct bfd_link_info
*);
1181 /* This function is called during section garbage collection to
1182 mark sections that define global symbols. */
1183 bfd_boolean (*gc_mark_dynamic_ref
)
1184 (struct elf_link_hash_entry
*, void *);
1186 /* This function is called during section gc to discover the section a
1187 particular relocation refers to. */
1188 elf_gc_mark_hook_fn gc_mark_hook
;
1190 /* This function, if defined, is called after the first gc marking pass
1191 to allow the backend to mark additional sections. */
1192 bfd_boolean (*gc_mark_extra_sections
)
1193 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
1195 /* This function, if defined, is called after the ELF headers have
1196 been created. This allows for things like the OS and ABI versions
1198 void (*elf_backend_post_process_headers
)
1199 (bfd
*, struct bfd_link_info
*);
1201 /* This function, if defined, prints a symbol to file and returns the
1202 name of the symbol to be printed. It should return NULL to fall
1203 back to default symbol printing. */
1204 const char *(*elf_backend_print_symbol_all
)
1205 (bfd
*, void *, asymbol
*);
1207 /* This function, if defined, is called after all local symbols and
1208 global symbols converted to locals are emitted into the symtab
1209 section. It allows the backend to emit special local symbols
1210 not handled in the hash table. */
1211 bfd_boolean (*elf_backend_output_arch_local_syms
)
1212 (bfd
*, struct bfd_link_info
*, void *,
1213 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1214 struct elf_link_hash_entry
*));
1216 /* This function, if defined, is called after all symbols are emitted
1217 into the symtab section. It allows the backend to emit special
1218 global symbols not handled in the hash table. */
1219 bfd_boolean (*elf_backend_output_arch_syms
)
1220 (bfd
*, struct bfd_link_info
*, void *,
1221 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1222 struct elf_link_hash_entry
*));
1224 /* Filter what symbols of the output file to include in the import
1225 library if one is created. */
1226 unsigned int (*elf_backend_filter_implib_symbols
)
1227 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
1229 /* Copy any information related to dynamic linking from a pre-existing
1230 symbol to a newly created symbol. Also called to copy flags and
1231 other back-end info to a weakdef, in which case the symbol is not
1232 newly created and plt/got refcounts and dynamic indices should not
1234 void (*elf_backend_copy_indirect_symbol
)
1235 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
1236 struct elf_link_hash_entry
*);
1238 /* Modify any information related to dynamic linking such that the
1239 symbol is not exported. */
1240 void (*elf_backend_hide_symbol
)
1241 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
1243 /* A function to do additional symbol fixup, called by
1244 _bfd_elf_fix_symbol_flags. */
1245 bfd_boolean (*elf_backend_fixup_symbol
)
1246 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
1248 /* Merge the backend specific symbol attribute. */
1249 void (*elf_backend_merge_symbol_attribute
)
1250 (struct elf_link_hash_entry
*, const Elf_Internal_Sym
*, bfd_boolean
,
1253 /* This function, if defined, will return a string containing the
1254 name of a target-specific dynamic tag. */
1255 char *(*elf_backend_get_target_dtag
)
1258 /* Decide whether an undefined symbol is special and can be ignored.
1259 This is the case for OPTIONAL symbols on IRIX. */
1260 bfd_boolean (*elf_backend_ignore_undef_symbol
)
1261 (struct elf_link_hash_entry
*);
1263 /* Emit relocations. Overrides default routine for emitting relocs,
1264 except during a relocatable link, or if all relocs are being emitted. */
1265 bfd_boolean (*elf_backend_emit_relocs
)
1266 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
1267 struct elf_link_hash_entry
**);
1269 /* Update relocations. It is allowed to change the number and the order.
1270 In such a case hashes should be invalidated. */
1271 void (*elf_backend_update_relocs
)
1272 (asection
*, struct bfd_elf_section_reloc_data
*);
1274 /* Count relocations. Not called for relocatable links
1275 or if all relocs are being preserved in the output. */
1276 unsigned int (*elf_backend_count_relocs
)
1277 (struct bfd_link_info
*, asection
*);
1279 /* Count additionals relocations. Called for relocatable links if
1280 additional relocations needs to be created. */
1281 unsigned int (*elf_backend_count_additional_relocs
)
1284 /* Say whether to sort relocs output by ld -r and ld --emit-relocs,
1285 by r_offset. If NULL, default to true. */
1286 bfd_boolean (*sort_relocs_p
)
1289 /* This function, if defined, is called when an NT_PRSTATUS note is found
1291 bfd_boolean (*elf_backend_grok_prstatus
)
1292 (bfd
*, Elf_Internal_Note
*);
1294 /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
1295 note is found in a core file. */
1296 bfd_boolean (*elf_backend_grok_psinfo
)
1297 (bfd
*, Elf_Internal_Note
*);
1299 /* This function, if defined, is called when a "FreeBSD" NT_PRSTATUS
1300 note is found in a core file. */
1301 bfd_boolean (*elf_backend_grok_freebsd_prstatus
)
1302 (bfd
*, Elf_Internal_Note
*);
1304 /* This function, if defined, is called to write a note to a corefile. */
1305 char *(*elf_backend_write_core_note
)
1306 (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...);
1308 /* This function, if defined, is called to convert target-specific
1309 section flag names into hex values. */
1310 flagword (*elf_backend_lookup_section_flags_hook
)
1313 /* This function returns class of a reloc type. */
1314 enum elf_reloc_type_class (*elf_backend_reloc_type_class
)
1315 (const struct bfd_link_info
*, const asection
*, const Elf_Internal_Rela
*);
1317 /* This function, if defined, removes information about discarded functions
1318 from other sections which mention them. */
1319 bfd_boolean (*elf_backend_discard_info
)
1320 (bfd
*, struct elf_reloc_cookie
*, struct bfd_link_info
*);
1322 /* This function, if defined, signals that the function above has removed
1323 the discarded relocations for this section. */
1324 bfd_boolean (*elf_backend_ignore_discarded_relocs
)
1327 /* What to do when ld finds relocations against symbols defined in
1328 discarded sections. */
1329 unsigned int (*action_discarded
)
1332 /* This function returns the width of FDE pointers in bytes, or 0 if
1333 that can't be determined for some reason. The default definition
1334 goes by the bfd's EI_CLASS. */
1335 unsigned int (*elf_backend_eh_frame_address_size
)
1336 (bfd
*, const asection
*);
1338 /* These functions tell elf-eh-frame whether to attempt to turn
1339 absolute or lsda encodings into pc-relative ones. The default
1340 definition enables these transformations. */
1341 bfd_boolean (*elf_backend_can_make_relative_eh_frame
)
1342 (bfd
*, struct bfd_link_info
*, asection
*);
1343 bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame
)
1344 (bfd
*, struct bfd_link_info
*, asection
*);
1346 /* This function returns an encoding after computing the encoded
1347 value (and storing it in ENCODED) for the given OFFSET into OSEC,
1348 to be stored in at LOC_OFFSET into the LOC_SEC input section.
1349 The default definition chooses a 32-bit PC-relative encoding. */
1350 bfd_byte (*elf_backend_encode_eh_address
)
1351 (bfd
*abfd
, struct bfd_link_info
*info
,
1352 asection
*osec
, bfd_vma offset
,
1353 asection
*loc_sec
, bfd_vma loc_offset
,
1356 /* This function, if defined, may write out the given section.
1357 Returns TRUE if it did so and FALSE if the caller should. */
1358 bfd_boolean (*elf_backend_write_section
)
1359 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
1361 /* The level of IRIX compatibility we're striving for.
1362 MIPS ELF specific function. */
1363 irix_compat_t (*elf_backend_mips_irix_compat
)
1366 reloc_howto_type
*(*elf_backend_mips_rtype_to_howto
)
1367 (bfd
*, unsigned int, bfd_boolean
);
1369 /* The swapping table to use when dealing with ECOFF information.
1370 Used for the MIPS ELF .mdebug section. */
1371 const struct ecoff_debug_swap
*elf_backend_ecoff_debug_swap
;
1373 /* This function implements `bfd_elf_bfd_from_remote_memory';
1374 see elf.c, elfcode.h. */
1375 bfd
*(*elf_backend_bfd_from_remote_memory
)
1376 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
1377 int (*target_read_memory
) (bfd_vma vma
, bfd_byte
*myaddr
,
1378 bfd_size_type len
));
1380 bfd_boolean (*elf_backend_core_find_build_id
) (bfd
*, bfd_vma
);
1382 /* This function is used by `_bfd_elf_get_synthetic_symtab';
1384 bfd_vma (*plt_sym_val
) (bfd_vma
, const asection
*, const arelent
*);
1386 /* Is symbol defined in common section? */
1387 bfd_boolean (*common_definition
) (Elf_Internal_Sym
*);
1389 /* Return a common section index for section. */
1390 unsigned int (*common_section_index
) (asection
*);
1392 /* Return a common section for section. */
1393 asection
*(*common_section
) (asection
*);
1395 /* Return TRUE if we can merge 2 definitions. */
1396 bfd_boolean (*merge_symbol
) (struct elf_link_hash_entry
*,
1397 const Elf_Internal_Sym
*, asection
**,
1398 bfd_boolean
, bfd_boolean
,
1399 bfd
*, const asection
*);
1401 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
1402 bfd_boolean (*elf_hash_symbol
) (struct elf_link_hash_entry
*);
1404 /* If non-NULL, called to register the location of XLAT_LOC within
1405 .MIPS.xhash at which real final dynindx for H will be written.
1406 If XLAT_LOC is zero, the symbol is not included in
1407 .MIPS.xhash and no dynindx will be written. */
1408 void (*record_xhash_symbol
)
1409 (struct elf_link_hash_entry
*h
, bfd_vma xlat_loc
);
1411 /* Return TRUE if type is a function symbol type. */
1412 bfd_boolean (*is_function_type
) (unsigned int type
);
1414 /* If the ELF symbol SYM might be a function in SEC, return the
1415 function size and set *CODE_OFF to the function's entry point,
1416 otherwise return zero. */
1417 bfd_size_type (*maybe_function_sym
) (const asymbol
*sym
, asection
*sec
,
1420 /* Given NAME, the name of a relocation section stripped of its
1421 .rel/.rela prefix, return the section in ABFD to which the
1422 relocations apply. */
1423 asection
*(*get_reloc_section
) (bfd
*abfd
, const char *name
);
1425 /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
1426 has a type >= SHT_LOOS. Returns TRUE if the fields were initialised,
1427 FALSE otherwise. Can be called multiple times for a given section,
1428 until it returns TRUE. Most of the times it is called ISECTION will be
1429 set to an input section that might be associated with the output section.
1430 The last time that it is called, ISECTION will be set to NULL. */
1431 bfd_boolean (*elf_backend_copy_special_section_fields
)
1432 (const bfd
*ibfd
, bfd
*obfd
, const Elf_Internal_Shdr
*isection
,
1433 Elf_Internal_Shdr
*osection
);
1435 /* Used to handle bad SHF_LINK_ORDER input. */
1436 void (*link_order_error_handler
) (const char *, ...);
1438 /* Name of the PLT relocation section. */
1439 const char *relplt_name
;
1441 /* Alternate EM_xxxx machine codes for this backend. */
1442 int elf_machine_alt1
;
1443 int elf_machine_alt2
;
1445 const struct elf_size_info
*s
;
1447 /* An array of target specific special sections. */
1448 const struct bfd_elf_special_section
*special_sections
;
1450 /* The size in bytes of the header for the GOT. This includes the
1451 so-called reserved entries on some systems. */
1452 bfd_vma got_header_size
;
1454 /* The size of the GOT entry for the symbol pointed to by H if non-NULL,
1455 otherwise by the local symbol with index SYMNDX in IBFD. */
1456 bfd_vma (*got_elt_size
) (bfd
*, struct bfd_link_info
*,
1457 struct elf_link_hash_entry
*h
,
1458 bfd
*ibfd
, unsigned long symndx
);
1460 /* The vendor name to use for a processor-standard attributes section. */
1461 const char *obj_attrs_vendor
;
1463 /* The section name to use for a processor-standard attributes section. */
1464 const char *obj_attrs_section
;
1466 /* Return 1, 2 or 3 to indicate what type of arguments a
1467 processor-specific tag takes. */
1468 int (*obj_attrs_arg_type
) (int);
1470 /* The section type to use for an attributes section. */
1471 unsigned int obj_attrs_section_type
;
1473 /* This function determines the order in which any attributes are
1474 written. It must be defined for input in the range
1475 LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range
1476 is used in order to make unity easy). The returned value is the
1477 actual tag number to place in the input position. */
1478 int (*obj_attrs_order
) (int);
1480 /* Handle merging unknown attributes; either warn and return TRUE,
1481 or give an error and return FALSE. */
1482 bfd_boolean (*obj_attrs_handle_unknown
) (bfd
*, int);
1484 /* Parse GNU properties. Return the property kind. If the property
1485 is corrupt, issue an error message and return property_corrupt. */
1486 enum elf_property_kind (*parse_gnu_properties
) (bfd
*, unsigned int,
1490 /* Merge GNU properties. Return TRUE if property is updated. */
1491 bfd_boolean (*merge_gnu_properties
) (struct bfd_link_info
*, bfd
*, bfd
*,
1492 elf_property
*, elf_property
*);
1494 /* Set up GNU properties. */
1495 bfd
*(*setup_gnu_properties
) (struct bfd_link_info
*);
1497 /* Fix up GNU properties. */
1498 void (*fixup_gnu_properties
) (struct bfd_link_info
*,
1499 elf_property_list
**);
1501 /* Encoding used for compact EH tables. */
1502 int (*compact_eh_encoding
) (struct bfd_link_info
*);
1504 /* Opcode representing no unwind. */
1505 int (*cant_unwind_opcode
) (struct bfd_link_info
*);
1507 /* This is non-zero if static TLS segments require a special alignment. */
1508 unsigned static_tls_alignment
;
1510 /* Alignment for the PT_GNU_STACK segment. */
1511 unsigned stack_align
;
1513 /* Flag bits to assign to a section of type SHT_STRTAB. */
1514 unsigned long elf_strtab_flags
;
1516 /* This is TRUE if the linker should act like collect and gather
1517 global constructors and destructors by name. This is TRUE for
1518 MIPS ELF because the Irix 5 tools can not handle the .init
1520 unsigned collect
: 1;
1522 /* This is TRUE if the linker should ignore changes to the type of a
1523 symbol. This is TRUE for MIPS ELF because some Irix 5 objects
1524 record undefined functions as STT_OBJECT although the definitions
1526 unsigned type_change_ok
: 1;
1528 /* Whether the backend may use REL relocations. (Some backends use
1529 both REL and RELA relocations, and this flag is set for those
1531 unsigned may_use_rel_p
: 1;
1533 /* Whether the backend may use RELA relocations. (Some backends use
1534 both REL and RELA relocations, and this flag is set for those
1536 unsigned may_use_rela_p
: 1;
1538 /* Whether the default relocation type is RELA. If a backend with
1539 this flag set wants REL relocations for a particular section,
1540 it must note that explicitly. Similarly, if this flag is clear,
1541 and the backend wants RELA relocations for a particular
1543 unsigned default_use_rela_p
: 1;
1545 /* True if PLT and copy relocations should be RELA by default. */
1546 unsigned rela_plts_and_copies_p
: 1;
1548 /* Set if RELA relocations for a relocatable link can be handled by
1549 generic code. Backends that set this flag need do nothing in the
1550 backend relocate_section routine for relocatable linking. */
1551 unsigned rela_normal
: 1;
1553 /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT
1555 unsigned dtrel_excludes_plt
: 1;
1557 /* TRUE if addresses "naturally" sign extend. This is used when
1558 swapping in from Elf32 when BFD64. */
1559 unsigned sign_extend_vma
: 1;
1561 unsigned want_got_plt
: 1;
1562 unsigned plt_readonly
: 1;
1563 unsigned want_plt_sym
: 1;
1564 unsigned plt_not_loaded
: 1;
1565 unsigned plt_alignment
: 4;
1566 unsigned can_gc_sections
: 1;
1567 unsigned can_refcount
: 1;
1568 unsigned want_got_sym
: 1;
1569 unsigned want_dynbss
: 1;
1570 unsigned want_dynrelro
: 1;
1572 /* Targets which do not support physical addressing often require
1573 that the p_paddr field in the section header to be set to zero.
1574 This field indicates whether this behavior is required. */
1575 unsigned want_p_paddr_set_to_zero
: 1;
1577 /* Target has broken hardware and/or kernel that requires pages not
1578 to be mapped twice with different permissions. */
1579 unsigned no_page_alias
: 1;
1581 /* True if an object file lacking a .note.GNU-stack section
1582 should be assumed to be requesting exec stack. At least one
1583 other file in the link needs to have a .note.GNU-stack section
1584 for a PT_GNU_STACK segment to be created. */
1585 unsigned default_execstack
: 1;
1587 /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize
1588 in length rather than sec->size in length, if sec->rawsize is
1589 non-zero and smaller than sec->size. */
1590 unsigned caches_rawsize
: 1;
1592 /* Address of protected data defined in the shared library may be
1593 external, i.e., due to copy relocation. */
1594 unsigned extern_protected_data
: 1;
1596 /* True if `_bfd_elf_link_renumber_dynsyms' must be called even for
1598 unsigned always_renumber_dynsyms
: 1;
1600 /* True if the 32-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1601 members use a 16-bit data type. */
1602 unsigned linux_prpsinfo32_ugid16
: 1;
1604 /* True if the 64-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1605 members use a 16-bit data type. */
1606 unsigned linux_prpsinfo64_ugid16
: 1;
1609 /* Information about reloc sections associated with a bfd_elf_section_data
1611 struct bfd_elf_section_reloc_data
1613 /* The ELF header for the reloc section associated with this
1615 Elf_Internal_Shdr
*hdr
;
1616 /* The number of relocations currently assigned to HDR. */
1618 /* The ELF section number of the reloc section. Only used for an
1621 /* Used by the backend linker to store the symbol hash table entries
1622 associated with relocs against global symbols. */
1623 struct elf_link_hash_entry
**hashes
;
1626 /* Information stored for each BFD section in an ELF file. This
1627 structure is allocated by elf_new_section_hook. */
1629 struct bfd_elf_section_data
1631 /* The ELF header for this section. */
1632 Elf_Internal_Shdr this_hdr
;
1634 /* INPUT_SECTION_FLAGS if specified in the linker script. */
1635 struct flag_info
*section_flag_info
;
1637 /* Information about the REL and RELA reloc sections associated
1638 with this section, if any. */
1639 struct bfd_elf_section_reloc_data rel
, rela
;
1641 /* The ELF section number of this section. */
1644 /* Used by the backend linker when generating a shared library to
1645 record the dynamic symbol index for a section symbol
1646 corresponding to this section. A value of 0 means that there is
1647 no dynamic symbol for this section. */
1650 /* A pointer to the linked-to section for SHF_LINK_ORDER. */
1651 asection
*linked_to
;
1653 /* A pointer to the swapped relocs. If the section uses REL relocs,
1654 rather than RELA, all the r_addend fields will be zero. This
1655 pointer may be NULL. It is used by the backend linker. */
1656 Elf_Internal_Rela
*relocs
;
1658 /* A pointer to a linked list tracking dynamic relocs copied for
1662 /* A pointer to the bfd section used for dynamic relocs. */
1666 /* Group name, if this section is a member of a group. */
1669 /* Group signature sym, if this is the SHT_GROUP section. */
1670 struct bfd_symbol
*id
;
1673 /* For a member of a group, points to the SHT_GROUP section.
1674 NULL for the SHT_GROUP section itself and non-group sections. */
1675 asection
*sec_group
;
1677 /* A linked list of member sections in the group. Circular when used by
1678 the linker. For the SHT_GROUP section, points at first member. */
1679 asection
*next_in_group
;
1681 /* The FDEs associated with this section. The u.fde.next_in_section
1682 field acts as a chain pointer. */
1683 struct eh_cie_fde
*fde_list
;
1685 /* Link from a text section to its .eh_frame_entry section. */
1686 asection
*eh_frame_entry
;
1688 /* A pointer used for various section optimizations. */
1692 #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
1693 #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
1694 #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type)
1695 #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
1696 #define elf_section_info(sec) (elf_section_data(sec)->this_hdr.sh_info)
1697 #define elf_group_name(sec) (elf_section_data(sec)->group.name)
1698 #define elf_group_id(sec) (elf_section_data(sec)->group.id)
1699 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
1700 #define elf_fde_list(sec) (elf_section_data(sec)->fde_list)
1701 #define elf_sec_group(sec) (elf_section_data(sec)->sec_group)
1702 #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry)
1704 #define xvec_get_elf_backend_data(xvec) \
1705 ((const struct elf_backend_data *) (xvec)->backend_data)
1707 #define get_elf_backend_data(abfd) \
1708 xvec_get_elf_backend_data ((abfd)->xvec)
1710 /* The least object attributes (within an attributes subsection) known
1711 for any target. Some code assumes that the value 0 is not used and
1712 the field for that attribute can instead be used as a marker to
1713 indicate that attributes have been initialized. */
1714 #define LEAST_KNOWN_OBJ_ATTRIBUTE 2
1716 /* The maximum number of known object attributes for any target. */
1717 #define NUM_KNOWN_OBJ_ATTRIBUTES 71
1719 /* The value of an object attribute. The type indicates whether the attribute
1720 holds and integer, a string, or both. It can also indicate that there can
1721 be no default (i.e. all values must be written to file, even zero), or
1722 that the value is in error and should not be written to file. */
1724 typedef struct obj_attribute
1726 #define ATTR_TYPE_FLAG_INT_VAL (1 << 0)
1727 #define ATTR_TYPE_FLAG_STR_VAL (1 << 1)
1728 #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
1729 #define ATTR_TYPE_FLAG_ERROR (1 << 3)
1731 #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
1732 #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
1733 #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
1734 #define ATTR_TYPE_HAS_ERROR(TYPE) ((TYPE) & ATTR_TYPE_FLAG_ERROR)
1741 typedef struct obj_attribute_list
1743 struct obj_attribute_list
*next
;
1746 } obj_attribute_list
;
1748 /* Object attributes may either be defined by the processor ABI, index
1749 OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
1750 (and possibly also processor-specific), index OBJ_ATTR_GNU. */
1751 #define OBJ_ATTR_PROC 0
1752 #define OBJ_ATTR_GNU 1
1753 #define OBJ_ATTR_FIRST OBJ_ATTR_PROC
1754 #define OBJ_ATTR_LAST OBJ_ATTR_GNU
1756 /* The following object attribute tags are taken as generic, for all
1757 targets and for "gnu" where there is no target standard. */
1764 Tag_compatibility
= 32
1767 /* The following struct stores information about every SystemTap section
1768 found in the object file. */
1771 struct sdt_note
*next
;
1776 /* tdata information grabbed from an elf core file. */
1777 struct core_elf_obj_tdata
1786 /* Extra tdata information held for output ELF BFDs. */
1787 struct output_elf_obj_tdata
1789 struct elf_segment_map
*seg_map
;
1790 struct elf_strtab_hash
*strtab_ptr
;
1792 /* STT_SECTION symbols for each section */
1793 asymbol
**section_syms
;
1795 /* Used to determine if PT_GNU_EH_FRAME segment header should be
1797 asection
*eh_frame_hdr
;
1799 /* NT_GNU_BUILD_ID note type info. */
1802 bfd_boolean (*after_write_object_contents
) (bfd
*);
1807 /* Records the result of `get_program_header_size'. */
1808 bfd_size_type program_header_size
;
1810 /* Used when laying out sections. */
1811 file_ptr next_file_pos
;
1813 int num_section_syms
;
1814 unsigned int shstrtab_section
, strtab_section
;
1816 /* Segment flags for the PT_GNU_STACK segment. */
1817 unsigned int stack_flags
;
1819 /* Used to determine if the e_flags field has been initialized */
1820 bfd_boolean flags_init
;
1823 /* Indicate if the bfd contains SHF_GNU_MBIND sections or symbols that
1824 have the STT_GNU_IFUNC symbol type or STB_GNU_UNIQUE binding. Used
1825 to set the osabi field in the ELF header structure. */
1828 elf_gnu_osabi_mbind
= 1 << 0,
1829 elf_gnu_osabi_ifunc
= 1 << 1,
1830 elf_gnu_osabi_unique
= 1 << 2,
1833 typedef struct elf_section_list
1835 Elf_Internal_Shdr hdr
;
1837 struct elf_section_list
* next
;
1840 enum dynamic_lib_link_class
{
1844 DYN_NO_ADD_NEEDED
= 4,
1848 /* Some private data is stashed away for future use using the tdata pointer
1849 in the bfd structure. */
1851 struct elf_obj_tdata
1853 Elf_Internal_Ehdr elf_header
[1]; /* Actual data, but ref like ptr */
1854 Elf_Internal_Shdr
**elf_sect_ptr
;
1855 Elf_Internal_Phdr
*phdr
;
1856 Elf_Internal_Shdr symtab_hdr
;
1857 Elf_Internal_Shdr shstrtab_hdr
;
1858 Elf_Internal_Shdr strtab_hdr
;
1859 Elf_Internal_Shdr dynsymtab_hdr
;
1860 Elf_Internal_Shdr dynstrtab_hdr
;
1861 Elf_Internal_Shdr dynversym_hdr
;
1862 Elf_Internal_Shdr dynverref_hdr
;
1863 Elf_Internal_Shdr dynverdef_hdr
;
1864 elf_section_list
* symtab_shndx_list
;
1865 bfd_vma gp
; /* The gp value */
1866 unsigned int gp_size
; /* The gp size */
1867 unsigned int num_elf_sections
; /* elf_sect_ptr size */
1869 /* A mapping from external symbols to entries in the linker hash
1870 table, used when linking. This is indexed by the symbol index
1871 minus the sh_info field of the symbol table header. */
1872 struct elf_link_hash_entry
**sym_hashes
;
1874 /* Track usage and final offsets of GOT entries for local symbols.
1875 This array is indexed by symbol index. Elements are used
1876 identically to "got" in struct elf_link_hash_entry. */
1879 bfd_signed_vma
*refcounts
;
1881 struct got_entry
**ents
;
1884 /* The linker ELF emulation code needs to let the backend ELF linker
1885 know what filename should be used for a dynamic object if the
1886 dynamic object is found using a search. The emulation code then
1887 sometimes needs to know what name was actually used. Until the
1888 file has been added to the linker symbol table, this field holds
1889 the name the linker wants. After it has been added, it holds the
1890 name actually used, which will be the DT_SONAME entry if there is
1892 const char *dt_name
;
1894 /* The linker emulation needs to know what audit libs
1895 are used by a dynamic object. */
1896 const char *dt_audit
;
1898 /* Used by find_nearest_line entry point. */
1901 /* A place to stash dwarf1 info for this bfd. */
1902 struct dwarf1_debug
*dwarf1_find_line_info
;
1904 /* A place to stash dwarf2 info for this bfd. */
1905 void *dwarf2_find_line_info
;
1907 /* Stash away info for yet another find line/function variant. */
1908 void *elf_find_function_cache
;
1910 /* Number of symbol version definitions we are about to emit. */
1911 unsigned int cverdefs
;
1913 /* Number of symbol version references we are about to emit. */
1914 unsigned int cverrefs
;
1916 /* Symbol version definitions in external objects. */
1917 Elf_Internal_Verdef
*verdef
;
1919 /* Symbol version references to external objects. */
1920 Elf_Internal_Verneed
*verref
;
1922 /* A pointer to the .eh_frame section. */
1923 asection
*eh_frame_section
;
1925 /* Symbol buffer. */
1928 /* List of GNU properties. Will be updated by setup_gnu_properties
1929 after all input GNU properties are merged for output. */
1930 elf_property_list
*properties
;
1932 obj_attribute known_obj_attributes
[2][NUM_KNOWN_OBJ_ATTRIBUTES
];
1933 obj_attribute_list
*other_obj_attributes
[2];
1935 /* Linked-list containing information about every Systemtap section
1936 found in the object file. Each section corresponds to one entry
1938 struct sdt_note
*sdt_note_head
;
1940 Elf_Internal_Shdr
**group_sect_ptr
;
1943 /* Index into group_sect_ptr, updated by setup_group when finding a
1944 section's group. Used to optimize subsequent group searches. */
1945 unsigned int group_search_offset
;
1947 unsigned int symtab_section
, dynsymtab_section
;
1948 unsigned int dynversym_section
, dynverdef_section
, dynverref_section
;
1950 /* An identifier used to distinguish different target
1951 specific extensions to this structure. */
1952 ENUM_BITFIELD (elf_target_id
) object_id
: 6;
1954 /* Whether a dyanmic object was specified normally on the linker
1955 command line, or was specified when --as-needed was in effect,
1956 or was found via a DT_NEEDED entry. */
1957 ENUM_BITFIELD (dynamic_lib_link_class
) dyn_lib_class
: 4;
1959 /* Whether the bfd uses OS specific bits that require ELFOSABI_GNU. */
1960 ENUM_BITFIELD (elf_gnu_osabi
) has_gnu_osabi
: 3;
1962 /* Whether if the bfd contains the GNU_PROPERTY_NO_COPY_ON_PROTECTED
1964 unsigned int has_no_copy_on_protected
: 1;
1966 /* Irix 5 often screws up the symbol table, sorting local symbols
1967 after global symbols. This flag is set if the symbol table in
1968 this BFD appears to be screwed up. If it is, we ignore the
1969 sh_info field in the symbol table header, and always read all the
1971 unsigned int bad_symtab
: 1;
1973 /* Information grabbed from an elf core file. */
1974 struct core_elf_obj_tdata
*core
;
1976 /* More information held for output ELF BFDs. */
1977 struct output_elf_obj_tdata
*o
;
1980 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
1982 #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id)
1983 #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size)
1984 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
1985 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
1986 #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections)
1987 #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map)
1988 #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos)
1989 #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr)
1990 #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags)
1991 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr)
1992 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
1993 #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list)
1994 #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section)
1995 #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section)
1996 #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr)
1997 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
1998 #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
1999 #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
2000 #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
2001 #define elf_eh_frame_section(bfd) \
2002 (elf_tdata(bfd) -> eh_frame_section)
2003 #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms)
2004 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms)
2005 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
2006 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
2007 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
2008 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
2009 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
2010 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
2011 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
2012 #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
2013 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
2014 #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit)
2015 #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
2016 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
2017 #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init)
2018 #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes)
2019 #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes)
2020 #define elf_known_obj_attributes_proc(bfd) \
2021 (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC])
2022 #define elf_other_obj_attributes_proc(bfd) \
2023 (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
2024 #define elf_properties(bfd) (elf_tdata (bfd) -> properties)
2025 #define elf_has_no_copy_on_protected(bfd) \
2026 (elf_tdata(bfd) -> has_no_copy_on_protected)
2028 extern void _bfd_elf_swap_verdef_in
2029 (bfd
*, const Elf_External_Verdef
*, Elf_Internal_Verdef
*);
2030 extern void _bfd_elf_swap_verdef_out
2031 (bfd
*, const Elf_Internal_Verdef
*, Elf_External_Verdef
*);
2032 extern void _bfd_elf_swap_verdaux_in
2033 (bfd
*, const Elf_External_Verdaux
*, Elf_Internal_Verdaux
*);
2034 extern void _bfd_elf_swap_verdaux_out
2035 (bfd
*, const Elf_Internal_Verdaux
*, Elf_External_Verdaux
*);
2036 extern void _bfd_elf_swap_verneed_in
2037 (bfd
*, const Elf_External_Verneed
*, Elf_Internal_Verneed
*);
2038 extern void _bfd_elf_swap_verneed_out
2039 (bfd
*, const Elf_Internal_Verneed
*, Elf_External_Verneed
*);
2040 extern void _bfd_elf_swap_vernaux_in
2041 (bfd
*, const Elf_External_Vernaux
*, Elf_Internal_Vernaux
*);
2042 extern void _bfd_elf_swap_vernaux_out
2043 (bfd
*, const Elf_Internal_Vernaux
*, Elf_External_Vernaux
*);
2044 extern void _bfd_elf_swap_versym_in
2045 (bfd
*, const Elf_External_Versym
*, Elf_Internal_Versym
*);
2046 extern void _bfd_elf_swap_versym_out
2047 (bfd
*, const Elf_Internal_Versym
*, Elf_External_Versym
*);
2049 extern unsigned int _bfd_elf_section_from_bfd_section
2050 (bfd
*, asection
*);
2051 extern char *bfd_elf_string_from_elf_section
2052 (bfd
*, unsigned, unsigned);
2053 extern Elf_Internal_Sym
*bfd_elf_get_elf_syms
2054 (bfd
*, Elf_Internal_Shdr
*, size_t, size_t, Elf_Internal_Sym
*, void *,
2055 Elf_External_Sym_Shndx
*);
2056 extern char * bfd_elf_get_str_section (bfd
*, unsigned int);
2057 extern const char *bfd_elf_sym_name
2058 (bfd
*, Elf_Internal_Shdr
*, Elf_Internal_Sym
*, asection
*);
2060 extern bfd_boolean _bfd_elf_copy_private_bfd_data
2062 extern bfd_boolean _bfd_elf_print_private_bfd_data
2064 const char * _bfd_elf_get_symbol_version_string
2065 (bfd
*, asymbol
*, bfd_boolean
*);
2066 extern void bfd_elf_print_symbol
2067 (bfd
*, void *, asymbol
*, bfd_print_symbol_type
);
2069 extern unsigned int _bfd_elf_eh_frame_address_size
2070 (bfd
*, const asection
*);
2071 extern bfd_byte _bfd_elf_encode_eh_address
2072 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*osec
, bfd_vma offset
,
2073 asection
*loc_sec
, bfd_vma loc_offset
, bfd_vma
*encoded
);
2074 extern bfd_boolean _bfd_elf_can_make_relative
2075 (bfd
*input_bfd
, struct bfd_link_info
*info
, asection
*eh_frame_section
);
2077 extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
2078 (const struct bfd_link_info
*, const asection
*,
2079 const Elf_Internal_Rela
*);
2080 extern bfd_vma _bfd_elf_rela_local_sym
2081 (bfd
*, Elf_Internal_Sym
*, asection
**, Elf_Internal_Rela
*);
2082 extern bfd_vma _bfd_elf_rel_local_sym
2083 (bfd
*, Elf_Internal_Sym
*, asection
**, bfd_vma
);
2084 extern bfd_vma _bfd_elf_section_offset
2085 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2087 extern unsigned long bfd_elf_hash
2089 extern unsigned long bfd_elf_gnu_hash
2092 extern bfd_reloc_status_type bfd_elf_generic_reloc
2093 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
2094 extern bfd_boolean bfd_elf_allocate_object
2095 (bfd
*, size_t, enum elf_target_id
);
2096 extern bfd_boolean bfd_elf_make_object
2098 extern bfd_boolean bfd_elf_mkcorefile
2100 extern bfd_boolean _bfd_elf_make_section_from_shdr
2101 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
2102 extern bfd_boolean _bfd_elf_make_section_from_phdr
2103 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
2104 extern struct bfd_hash_entry
*_bfd_elf_link_hash_newfunc
2105 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);
2106 extern struct bfd_link_hash_table
*_bfd_elf_link_hash_table_create
2108 extern void _bfd_elf_link_hash_table_free
2110 extern void _bfd_elf_link_hash_copy_indirect
2111 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2112 struct elf_link_hash_entry
*);
2113 extern void _bfd_elf_link_hash_hide_symbol
2114 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
2115 extern void _bfd_elf_link_hide_symbol
2116 (bfd
*, struct bfd_link_info
*, struct bfd_link_hash_entry
*);
2117 extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
2118 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2119 extern bfd_boolean _bfd_elf_link_hash_table_init
2120 (struct elf_link_hash_table
*, bfd
*,
2121 struct bfd_hash_entry
*(*)
2122 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *),
2123 unsigned int, enum elf_target_id
);
2124 extern bfd_boolean _bfd_elf_slurp_version_tables
2125 (bfd
*, bfd_boolean
);
2126 extern bfd_boolean _bfd_elf_merge_sections
2127 (bfd
*, struct bfd_link_info
*);
2128 extern bfd_boolean _bfd_elf_match_sections_by_type
2129 (bfd
*, const asection
*, bfd
*, const asection
*);
2130 extern bfd_boolean bfd_elf_is_group_section
2131 (bfd
*, const struct bfd_section
*);
2132 extern const char *bfd_elf_group_name
2133 (bfd
*, const struct bfd_section
*);
2134 extern bfd_boolean _bfd_elf_section_already_linked
2135 (bfd
*, asection
*, struct bfd_link_info
*);
2136 extern void bfd_elf_set_group_contents
2137 (bfd
*, asection
*, void *);
2138 extern unsigned int _bfd_elf_filter_global_symbols
2139 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
2140 extern asection
*_bfd_elf_check_kept_section
2141 (asection
*, struct bfd_link_info
*);
2142 #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms
2143 extern void _bfd_elf_copy_link_hash_symbol_type
2144 (bfd
*, struct bfd_link_hash_entry
*, struct bfd_link_hash_entry
*);
2145 extern bfd_boolean _bfd_elf_size_group_sections
2146 (struct bfd_link_info
*);
2147 extern bfd_boolean _bfd_elf_fixup_group_sections
2148 (bfd
*, asection
*);
2149 extern bfd_boolean _bfd_elf_copy_private_header_data
2151 extern bfd_boolean _bfd_elf_copy_private_symbol_data
2152 (bfd
*, asymbol
*, bfd
*, asymbol
*);
2153 #define _bfd_generic_init_private_section_data \
2154 _bfd_elf_init_private_section_data
2155 extern bfd_boolean _bfd_elf_init_private_section_data
2156 (bfd
*, asection
*, bfd
*, asection
*, struct bfd_link_info
*);
2157 extern bfd_boolean _bfd_elf_copy_private_section_data
2158 (bfd
*, asection
*, bfd
*, asection
*);
2159 extern bfd_boolean _bfd_elf_write_object_contents
2161 extern bfd_boolean _bfd_elf_write_corefile_contents
2163 extern bfd_boolean _bfd_elf_set_section_contents
2164 (bfd
*, sec_ptr
, const void *, file_ptr
, bfd_size_type
);
2165 extern long _bfd_elf_get_symtab_upper_bound
2167 extern long _bfd_elf_canonicalize_symtab
2168 (bfd
*, asymbol
**);
2169 extern long _bfd_elf_get_dynamic_symtab_upper_bound
2171 extern long _bfd_elf_canonicalize_dynamic_symtab
2172 (bfd
*, asymbol
**);
2173 extern long _bfd_elf_get_synthetic_symtab
2174 (bfd
*, long, asymbol
**, long, asymbol
**, asymbol
**);
2175 extern long _bfd_elf_get_reloc_upper_bound
2177 extern long _bfd_elf_canonicalize_reloc
2178 (bfd
*, sec_ptr
, arelent
**, asymbol
**);
2179 extern asection
* _bfd_elf_get_dynamic_reloc_section
2180 (bfd
*, asection
*, bfd_boolean
);
2181 extern asection
* _bfd_elf_make_dynamic_reloc_section
2182 (asection
*, bfd
*, unsigned int, bfd
*, bfd_boolean
);
2183 extern long _bfd_elf_get_dynamic_reloc_upper_bound
2185 extern long _bfd_elf_canonicalize_dynamic_reloc
2186 (bfd
*, arelent
**, asymbol
**);
2187 extern asymbol
*_bfd_elf_make_empty_symbol
2189 extern void _bfd_elf_get_symbol_info
2190 (bfd
*, asymbol
*, symbol_info
*);
2191 extern bfd_boolean _bfd_elf_is_local_label_name
2192 (bfd
*, const char *);
2193 extern alent
*_bfd_elf_get_lineno
2195 extern bfd_boolean _bfd_elf_set_arch_mach
2196 (bfd
*, enum bfd_architecture
, unsigned long);
2197 extern bfd_boolean _bfd_elf_find_nearest_line
2198 (bfd
*, asymbol
**, asection
*, bfd_vma
,
2199 const char **, const char **, unsigned int *, unsigned int *);
2200 extern bfd_boolean _bfd_elf_find_line
2201 (bfd
*, asymbol
**, asymbol
*, const char **, unsigned int *);
2202 extern bfd_boolean _bfd_elf_find_inliner_info
2203 (bfd
*, const char **, const char **, unsigned int *);
2204 extern asymbol
*_bfd_elf_find_function
2205 (bfd
*, asymbol
**, asection
*, bfd_vma
, const char **, const char **);
2206 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
2207 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
2208 extern int _bfd_elf_sizeof_headers
2209 (bfd
*, struct bfd_link_info
*);
2210 extern bfd_boolean _bfd_elf_new_section_hook
2211 (bfd
*, asection
*);
2212 extern const struct bfd_elf_special_section
*_bfd_elf_get_special_section
2213 (const char *, const struct bfd_elf_special_section
*, unsigned int);
2214 extern const struct bfd_elf_special_section
*_bfd_elf_get_sec_type_attr
2215 (bfd
*, asection
*);
2217 extern bfd_boolean _bfd_elf_link_hide_sym_by_version
2218 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2220 /* If the target doesn't have reloc handling written yet: */
2221 extern bfd_boolean _bfd_elf_no_info_to_howto
2222 (bfd
*, arelent
*, Elf_Internal_Rela
*);
2224 extern bfd_boolean bfd_section_from_shdr
2225 (bfd
*, unsigned int shindex
);
2226 extern bfd_boolean bfd_section_from_phdr
2227 (bfd
*, Elf_Internal_Phdr
*, int);
2229 extern int _bfd_elf_symbol_from_bfd_symbol
2230 (bfd
*, asymbol
**);
2232 extern Elf_Internal_Sym
*bfd_sym_from_r_symndx
2233 (struct sym_cache
*, bfd
*, unsigned long);
2234 extern asection
*bfd_section_from_elf_index
2235 (bfd
*, unsigned int);
2237 extern struct elf_strtab_hash
* _bfd_elf_strtab_init
2239 extern void _bfd_elf_strtab_free
2240 (struct elf_strtab_hash
*);
2241 extern size_t _bfd_elf_strtab_add
2242 (struct elf_strtab_hash
*, const char *, bfd_boolean
);
2243 extern void _bfd_elf_strtab_addref
2244 (struct elf_strtab_hash
*, size_t);
2245 extern void _bfd_elf_strtab_delref
2246 (struct elf_strtab_hash
*, size_t);
2247 extern unsigned int _bfd_elf_strtab_refcount
2248 (struct elf_strtab_hash
*, size_t);
2249 extern void _bfd_elf_strtab_clear_all_refs
2250 (struct elf_strtab_hash
*);
2251 extern void *_bfd_elf_strtab_save
2252 (struct elf_strtab_hash
*);
2253 extern void _bfd_elf_strtab_restore
2254 (struct elf_strtab_hash
*, void *);
2255 extern bfd_size_type _bfd_elf_strtab_size
2256 (struct elf_strtab_hash
*);
2257 extern bfd_size_type _bfd_elf_strtab_len
2258 (struct elf_strtab_hash
*);
2259 extern bfd_size_type _bfd_elf_strtab_offset
2260 (struct elf_strtab_hash
*, size_t);
2261 extern const char * _bfd_elf_strtab_str
2262 (struct elf_strtab_hash
*, size_t idx
, bfd_size_type
*offset
);
2263 extern bfd_boolean _bfd_elf_strtab_emit
2264 (bfd
*, struct elf_strtab_hash
*);
2265 extern void _bfd_elf_strtab_finalize
2266 (struct elf_strtab_hash
*);
2268 extern bfd_boolean bfd_elf_parse_eh_frame_entries
2269 (bfd
*, struct bfd_link_info
*);
2270 extern bfd_boolean _bfd_elf_parse_eh_frame_entry
2271 (struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2272 extern void _bfd_elf_parse_eh_frame
2273 (bfd
*, struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2274 extern bfd_boolean _bfd_elf_end_eh_frame_parsing
2275 (struct bfd_link_info
*info
);
2277 extern bfd_boolean _bfd_elf_discard_section_eh_frame
2278 (bfd
*, struct bfd_link_info
*, asection
*,
2279 bfd_boolean (*) (bfd_vma
, void *), struct elf_reloc_cookie
*);
2280 extern bfd_boolean _bfd_elf_adjust_eh_frame_global_symbol
2281 (struct elf_link_hash_entry
*, void *);
2282 extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
2283 (bfd
*, struct bfd_link_info
*);
2284 extern bfd_vma _bfd_elf_eh_frame_section_offset
2285 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2286 extern bfd_boolean _bfd_elf_write_section_eh_frame
2287 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2288 bfd_boolean _bfd_elf_write_section_eh_frame_entry
2289 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2290 extern bfd_boolean
_bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info
*);
2291 extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
2292 (bfd
*, struct bfd_link_info
*);
2293 extern bfd_boolean _bfd_elf_eh_frame_present
2294 (struct bfd_link_info
*);
2295 extern bfd_boolean _bfd_elf_eh_frame_entry_present
2296 (struct bfd_link_info
*);
2297 extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
2298 (struct bfd_link_info
*);
2300 extern bfd_boolean
_bfd_elf_hash_symbol (struct elf_link_hash_entry
*);
2302 extern long _bfd_elf_link_lookup_local_dynindx
2303 (struct bfd_link_info
*, bfd
*, long);
2304 extern bfd_boolean _bfd_elf_compute_section_file_positions
2305 (bfd
*, struct bfd_link_info
*);
2306 extern file_ptr _bfd_elf_assign_file_position_for_section
2307 (Elf_Internal_Shdr
*, file_ptr
, bfd_boolean
);
2309 extern bfd_boolean _bfd_elf_validate_reloc
2312 extern bfd_boolean bfd_elf_record_link_assignment
2313 (bfd
*, struct bfd_link_info
*, const char *, bfd_boolean
,
2315 extern bfd_boolean
bfd_elf_stack_segment_size (bfd
*, struct bfd_link_info
*,
2316 const char *, bfd_vma
);
2317 extern bfd_boolean bfd_elf_size_dynamic_sections
2318 (bfd
*, const char *, const char *, const char *, const char *, const char *,
2319 const char * const *, struct bfd_link_info
*, struct bfd_section
**);
2320 extern bfd_boolean bfd_elf_size_dynsym_hash_dynstr
2321 (bfd
*, struct bfd_link_info
*);
2322 extern bfd_boolean bfd_elf_get_bfd_needed_list
2323 (bfd
*, struct bfd_link_needed_list
**);
2324 extern struct bfd_link_needed_list
*bfd_elf_get_needed_list
2325 (bfd
*, struct bfd_link_info
*);
2326 extern void bfd_elf_set_dt_needed_name
2327 (bfd
*, const char *);
2328 extern const char *bfd_elf_get_dt_soname
2330 extern void bfd_elf_set_dyn_lib_class
2331 (bfd
*, enum dynamic_lib_link_class
);
2332 extern int bfd_elf_get_dyn_lib_class
2334 extern struct bfd_link_needed_list
*bfd_elf_get_runpath_list
2335 (bfd
*, struct bfd_link_info
*);
2336 extern int bfd_elf_discard_info
2337 (bfd
*, struct bfd_link_info
*);
2338 extern unsigned int _bfd_elf_default_action_discarded
2339 (struct bfd_section
*);
2340 extern struct bfd_section
*_bfd_elf_tls_setup
2341 (bfd
*, struct bfd_link_info
*);
2343 extern bfd_boolean _bfd_elf_link_create_dynamic_sections
2344 (bfd
*, struct bfd_link_info
*);
2345 extern bfd_boolean _bfd_elf_omit_section_dynsym_default
2346 (bfd
*, struct bfd_link_info
*, asection
*);
2347 extern bfd_boolean _bfd_elf_omit_section_dynsym_all
2348 (bfd
*, struct bfd_link_info
*, asection
*);
2349 extern bfd_boolean _bfd_elf_create_dynamic_sections
2350 (bfd
*, struct bfd_link_info
*);
2351 extern bfd_boolean _bfd_elf_create_got_section
2352 (bfd
*, struct bfd_link_info
*);
2353 extern asection
*_bfd_elf_section_for_symbol
2354 (struct elf_reloc_cookie
*, unsigned long, bfd_boolean
);
2355 extern struct elf_link_hash_entry
*_bfd_elf_define_linkage_sym
2356 (bfd
*, struct bfd_link_info
*, asection
*, const char *);
2357 extern void _bfd_elf_init_1_index_section
2358 (bfd
*, struct bfd_link_info
*);
2359 extern void _bfd_elf_init_2_index_sections
2360 (bfd
*, struct bfd_link_info
*);
2362 extern bfd_boolean _bfd_elfcore_make_pseudosection
2363 (bfd
*, char *, size_t, ufile_ptr
);
2364 extern char *_bfd_elfcore_strndup
2365 (bfd
*, char *, size_t);
2367 extern Elf_Internal_Rela
*_bfd_elf_link_read_relocs
2368 (bfd
*, asection
*, void *, Elf_Internal_Rela
*, bfd_boolean
);
2370 extern bfd_boolean _bfd_elf_link_output_relocs
2371 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
2372 struct elf_link_hash_entry
**);
2374 extern bfd_boolean _bfd_elf_adjust_dynamic_copy
2375 (struct bfd_link_info
*, struct elf_link_hash_entry
*, asection
*);
2377 extern bfd_boolean _bfd_elf_dynamic_symbol_p
2378 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2380 extern bfd_boolean _bfd_elf_symbol_refs_local_p
2381 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2383 extern bfd_reloc_status_type bfd_elf_perform_complex_relocation
2384 (bfd
*, asection
*, bfd_byte
*, Elf_Internal_Rela
*, bfd_vma
);
2386 extern bfd_boolean _bfd_elf_setup_sections
2389 extern struct bfd_link_hash_entry
*bfd_elf_define_start_stop
2390 (struct bfd_link_info
*, const char *, asection
*);
2392 extern void _bfd_elf_post_process_headers (bfd
*, struct bfd_link_info
*);
2394 extern bfd_boolean
_bfd_elf_final_write_processing (bfd
*);
2396 extern const bfd_target
*bfd_elf32_object_p
2398 extern const bfd_target
*bfd_elf32_core_file_p
2400 extern char *bfd_elf32_core_file_failing_command
2402 extern int bfd_elf32_core_file_failing_signal
2404 extern bfd_boolean bfd_elf32_core_file_matches_executable_p
2406 extern int bfd_elf32_core_file_pid
2408 extern bfd_boolean _bfd_elf32_core_find_build_id
2411 extern bfd_boolean bfd_elf32_swap_symbol_in
2412 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2413 extern void bfd_elf32_swap_symbol_out
2414 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2415 extern void bfd_elf32_swap_reloc_in
2416 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2417 extern void bfd_elf32_swap_reloc_out
2418 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2419 extern void bfd_elf32_swap_reloca_in
2420 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2421 extern void bfd_elf32_swap_reloca_out
2422 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2423 extern void bfd_elf32_swap_phdr_in
2424 (bfd
*, const Elf32_External_Phdr
*, Elf_Internal_Phdr
*);
2425 extern void bfd_elf32_swap_phdr_out
2426 (bfd
*, const Elf_Internal_Phdr
*, Elf32_External_Phdr
*);
2427 extern void bfd_elf32_swap_dyn_in
2428 (bfd
*, const void *, Elf_Internal_Dyn
*);
2429 extern void bfd_elf32_swap_dyn_out
2430 (bfd
*, const Elf_Internal_Dyn
*, void *);
2431 extern long bfd_elf32_slurp_symbol_table
2432 (bfd
*, asymbol
**, bfd_boolean
);
2433 extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
2435 extern int bfd_elf32_write_out_phdrs
2436 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2437 extern bfd_boolean bfd_elf32_checksum_contents
2438 (bfd
* , void (*) (const void *, size_t, void *), void *);
2439 extern void bfd_elf32_write_relocs
2440 (bfd
*, asection
*, void *);
2441 extern bfd_boolean bfd_elf32_slurp_reloc_table
2442 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2444 extern const bfd_target
*bfd_elf64_object_p
2446 extern const bfd_target
*bfd_elf64_core_file_p
2448 extern char *bfd_elf64_core_file_failing_command
2450 extern int bfd_elf64_core_file_failing_signal
2452 extern bfd_boolean bfd_elf64_core_file_matches_executable_p
2454 extern int bfd_elf64_core_file_pid
2456 extern bfd_boolean _bfd_elf64_core_find_build_id
2459 extern bfd_boolean bfd_elf64_swap_symbol_in
2460 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2461 extern void bfd_elf64_swap_symbol_out
2462 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2463 extern void bfd_elf64_swap_reloc_in
2464 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2465 extern void bfd_elf64_swap_reloc_out
2466 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2467 extern void bfd_elf64_swap_reloca_in
2468 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2469 extern void bfd_elf64_swap_reloca_out
2470 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2471 extern void bfd_elf64_swap_phdr_in
2472 (bfd
*, const Elf64_External_Phdr
*, Elf_Internal_Phdr
*);
2473 extern void bfd_elf64_swap_phdr_out
2474 (bfd
*, const Elf_Internal_Phdr
*, Elf64_External_Phdr
*);
2475 extern void bfd_elf64_swap_dyn_in
2476 (bfd
*, const void *, Elf_Internal_Dyn
*);
2477 extern void bfd_elf64_swap_dyn_out
2478 (bfd
*, const Elf_Internal_Dyn
*, void *);
2479 extern long bfd_elf64_slurp_symbol_table
2480 (bfd
*, asymbol
**, bfd_boolean
);
2481 extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
2483 extern int bfd_elf64_write_out_phdrs
2484 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2485 extern bfd_boolean bfd_elf64_checksum_contents
2486 (bfd
* , void (*) (const void *, size_t, void *), void *);
2487 extern void bfd_elf64_write_relocs
2488 (bfd
*, asection
*, void *);
2489 extern bfd_boolean bfd_elf64_slurp_reloc_table
2490 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2492 extern bfd_boolean _bfd_elf_default_relocs_compatible
2493 (const bfd_target
*, const bfd_target
*);
2495 extern bfd_boolean _bfd_elf_relocs_compatible
2496 (const bfd_target
*, const bfd_target
*);
2497 extern bfd_boolean _bfd_elf_notice_as_needed
2498 (bfd
*, struct bfd_link_info
*, enum notice_asneeded_action
);
2500 extern struct elf_link_hash_entry
*_bfd_elf_archive_symbol_lookup
2501 (bfd
*, struct bfd_link_info
*, const char *);
2502 extern bfd_boolean bfd_elf_link_add_symbols
2503 (bfd
*, struct bfd_link_info
*);
2504 extern bfd_boolean _bfd_elf_add_dynamic_entry
2505 (struct bfd_link_info
*, bfd_vma
, bfd_vma
);
2506 extern bfd_boolean _bfd_elf_link_check_relocs
2507 (bfd
*, struct bfd_link_info
*);
2509 extern bfd_boolean bfd_elf_link_record_dynamic_symbol
2510 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2512 extern int bfd_elf_link_record_local_dynamic_symbol
2513 (struct bfd_link_info
*, bfd
*, long);
2515 extern bfd_boolean _bfd_elf_close_and_cleanup
2518 extern bfd_boolean _bfd_elf_common_definition
2519 (Elf_Internal_Sym
*);
2521 extern unsigned int _bfd_elf_common_section_index
2524 extern asection
*_bfd_elf_common_section
2527 extern bfd_vma _bfd_elf_default_got_elt_size
2528 (bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd
*,
2531 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
2532 (bfd
*, arelent
*, struct bfd_symbol
*, void *,
2533 asection
*, bfd
*, char **);
2535 extern bfd_boolean bfd_elf_final_link
2536 (bfd
*, struct bfd_link_info
*);
2538 extern void _bfd_elf_gc_keep
2539 (struct bfd_link_info
*info
);
2541 extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
2542 (struct elf_link_hash_entry
*h
, void *inf
);
2544 extern bfd_boolean bfd_elf_gc_sections
2545 (bfd
*, struct bfd_link_info
*);
2547 extern bfd_boolean bfd_elf_gc_record_vtinherit
2548 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2550 extern bfd_boolean bfd_elf_gc_record_vtentry
2551 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2553 extern asection
*_bfd_elf_gc_mark_hook
2554 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
2555 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
2557 extern asection
*_bfd_elf_gc_mark_rsec
2558 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2559 struct elf_reloc_cookie
*, bfd_boolean
*);
2561 extern bfd_boolean _bfd_elf_gc_mark_reloc
2562 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2563 struct elf_reloc_cookie
*);
2565 extern bfd_boolean _bfd_elf_gc_mark_fdes
2566 (struct bfd_link_info
*, asection
*, asection
*, elf_gc_mark_hook_fn
,
2567 struct elf_reloc_cookie
*);
2569 extern bfd_boolean _bfd_elf_gc_mark
2570 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
);
2572 extern bfd_boolean _bfd_elf_gc_mark_extra_sections
2573 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
2575 extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
2576 (bfd
*, struct bfd_link_info
*);
2578 extern bfd_boolean bfd_elf_gc_common_final_link
2579 (bfd
*, struct bfd_link_info
*);
2581 extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
2584 extern struct elf_segment_map
* _bfd_elf_make_dynamic_segment
2585 (bfd
*, asection
*);
2587 extern bfd_boolean _bfd_elf_map_sections_to_segments
2588 (bfd
*, struct bfd_link_info
*);
2590 extern bfd_boolean
_bfd_elf_is_function_type (unsigned int);
2592 extern bfd_size_type
_bfd_elf_maybe_function_sym (const asymbol
*, asection
*,
2595 extern asection
*_bfd_elf_plt_get_reloc_section (bfd
*, const char *);
2597 extern int bfd_elf_get_default_section_type (flagword
);
2599 extern bfd_boolean bfd_elf_lookup_section_flags
2600 (struct bfd_link_info
*, struct flag_info
*, asection
*);
2602 extern Elf_Internal_Phdr
* _bfd_elf_find_segment_containing_section
2603 (bfd
* abfd
, asection
* section
);
2605 /* PowerPC @tls opcode transform/validate. */
2606 extern unsigned int _bfd_elf_ppc_at_tls_transform
2607 (unsigned int, unsigned int);
2608 /* PowerPC @tprel opcode transform/validate. */
2609 extern unsigned int _bfd_elf_ppc_at_tprel_transform
2610 (unsigned int, unsigned int);
2611 /* PowerPC elf_object_p tweak. */
2612 extern bfd_boolean
_bfd_elf_ppc_set_arch (bfd
*);
2613 /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */
2614 extern bfd_boolean _bfd_elf_ppc_merge_fp_attributes
2615 (bfd
*, struct bfd_link_info
*);
2617 /* Return an upper bound on the number of bytes required to store a
2618 copy of ABFD's program header table entries. Return -1 if an error
2619 occurs; bfd_get_error will return an appropriate code. */
2620 extern long bfd_get_elf_phdr_upper_bound
2623 /* Copy ABFD's program header table entries to *PHDRS. The entries
2624 will be stored as an array of Elf_Internal_Phdr structures, as
2625 defined in include/elf/internal.h. To find out how large the
2626 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
2628 Return the number of program header table entries read, or -1 if an
2629 error occurs; bfd_get_error will return an appropriate code. */
2630 extern int bfd_get_elf_phdrs
2631 (bfd
*abfd
, void *phdrs
);
2633 /* Exported interface for writing elf corefile notes. */
2634 extern char *elfcore_write_note
2635 (bfd
*, char *, int *, const char *, int, const void *, int);
2636 extern char *elfcore_write_prpsinfo
2637 (bfd
*, char *, int *, const char *, const char *);
2638 extern char *elfcore_write_prstatus
2639 (bfd
*, char *, int *, long, int, const void *);
2640 extern char * elfcore_write_pstatus
2641 (bfd
*, char *, int *, long, int, const void *);
2642 extern char *elfcore_write_prfpreg
2643 (bfd
*, char *, int *, const void *, int);
2644 extern char *elfcore_write_prxfpreg
2645 (bfd
*, char *, int *, const void *, int);
2646 extern char *elfcore_write_xstatereg
2647 (bfd
*, char *, int *, const void *, int);
2648 extern char *elfcore_write_ppc_vmx
2649 (bfd
*, char *, int *, const void *, int);
2650 extern char *elfcore_write_ppc_vsx
2651 (bfd
*, char *, int *, const void *, int);
2652 extern char *elfcore_write_ppc_tar
2653 (bfd
*, char *, int *, const void *, int);
2654 extern char *elfcore_write_ppc_ppr
2655 (bfd
*, char *, int *, const void *, int);
2656 extern char *elfcore_write_ppc_dscr
2657 (bfd
*, char *, int *, const void *, int);
2658 extern char *elfcore_write_ppc_ebb
2659 (bfd
*, char *, int *, const void *, int);
2660 extern char *elfcore_write_ppc_pmu
2661 (bfd
*, char *, int *, const void *, int);
2662 extern char *elfcore_write_ppc_tm_cgpr
2663 (bfd
*, char *, int *, const void *, int);
2664 extern char *elfcore_write_ppc_tm_cfpr
2665 (bfd
*, char *, int *, const void *, int);
2666 extern char *elfcore_write_ppc_tm_cvmx
2667 (bfd
*, char *, int *, const void *, int);
2668 extern char *elfcore_write_ppc_tm_cvsx
2669 (bfd
*, char *, int *, const void *, int);
2670 extern char *elfcore_write_ppc_tm_spr
2671 (bfd
*, char *, int *, const void *, int);
2672 extern char *elfcore_write_ppc_tm_ctar
2673 (bfd
*, char *, int *, const void *, int);
2674 extern char *elfcore_write_ppc_tm_cppr
2675 (bfd
*, char *, int *, const void *, int);
2676 extern char *elfcore_write_ppc_tm_cdscr
2677 (bfd
*, char *, int *, const void *, int);
2678 extern char *elfcore_write_s390_timer
2679 (bfd
*, char *, int *, const void *, int);
2680 extern char *elfcore_write_s390_todcmp
2681 (bfd
*, char *, int *, const void *, int);
2682 extern char *elfcore_write_s390_todpreg
2683 (bfd
*, char *, int *, const void *, int);
2684 extern char *elfcore_write_s390_ctrs
2685 (bfd
*, char *, int *, const void *, int);
2686 extern char *elfcore_write_s390_prefix
2687 (bfd
*, char *, int *, const void *, int);
2688 extern char *elfcore_write_s390_last_break
2689 (bfd
*, char *, int *, const void *, int);
2690 extern char *elfcore_write_s390_system_call
2691 (bfd
*, char *, int *, const void *, int);
2692 extern char *elfcore_write_s390_tdb
2693 (bfd
*, char *, int *, const void *, int);
2694 extern char *elfcore_write_s390_vxrs_low
2695 (bfd
*, char *, int *, const void *, int);
2696 extern char *elfcore_write_s390_vxrs_high
2697 (bfd
*, char *, int *, const void *, int);
2698 extern char *elfcore_write_s390_gs_cb
2699 (bfd
*, char *, int *, const void *, int);
2700 extern char *elfcore_write_s390_gs_bc
2701 (bfd
*, char *, int *, const void *, int);
2702 extern char *elfcore_write_arm_vfp
2703 (bfd
*, char *, int *, const void *, int);
2704 extern char *elfcore_write_aarch_tls
2705 (bfd
*, char *, int *, const void *, int);
2706 extern char *elfcore_write_aarch_hw_break
2707 (bfd
*, char *, int *, const void *, int);
2708 extern char *elfcore_write_aarch_hw_watch
2709 (bfd
*, char *, int *, const void *, int);
2710 extern char *elfcore_write_aarch_sve
2711 (bfd
*, char *, int *, const void *, int);
2712 extern char *elfcore_write_aarch_pauth
2713 (bfd
*, char *, int *, const void *, int);
2714 extern char *elfcore_write_lwpstatus
2715 (bfd
*, char *, int *, long, int, const void *);
2716 extern char *elfcore_write_register_note
2717 (bfd
*, char *, int *, const char *, const void *, int);
2719 /* Internal structure which holds information to be included in the
2720 PRPSINFO section of Linux core files.
2722 This is an "internal" structure in the sense that it should be used
2723 to pass information to BFD (via the `elfcore_write_linux_prpsinfo'
2724 function), so things like endianess shouldn't be an issue. This
2725 structure will eventually be converted in one of the
2726 `elf_external_linux_*' structures and written out to an output bfd
2727 by one of the functions declared below. */
2729 struct elf_internal_linux_prpsinfo
2731 char pr_state
; /* Numeric process state. */
2732 char pr_sname
; /* Char for pr_state. */
2733 char pr_zomb
; /* Zombie. */
2734 char pr_nice
; /* Nice val. */
2735 unsigned long pr_flag
; /* Flags. */
2736 unsigned int pr_uid
;
2737 unsigned int pr_gid
;
2738 int pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
2739 char pr_fname
[16 + 1]; /* Filename of executable. */
2740 char pr_psargs
[80 + 1]; /* Initial part of arg list. */
2743 /* Linux/most 32-bit archs. */
2744 extern char *elfcore_write_linux_prpsinfo32
2745 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2747 /* Linux/most 64-bit archs. */
2748 extern char *elfcore_write_linux_prpsinfo64
2749 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2751 extern bfd
*_bfd_elf32_bfd_from_remote_memory
2752 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2753 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2754 extern bfd
*_bfd_elf64_bfd_from_remote_memory
2755 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2756 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2758 extern bfd_vma
bfd_elf_obj_attr_size (bfd
*);
2759 extern void bfd_elf_set_obj_attr_contents (bfd
*, bfd_byte
*, bfd_vma
);
2760 extern int bfd_elf_get_obj_attr_int (bfd
*, int, unsigned int);
2761 extern void bfd_elf_add_obj_attr_int (bfd
*, int, unsigned int, unsigned int);
2762 #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
2763 bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2764 extern void bfd_elf_add_obj_attr_string (bfd
*, int, unsigned int, const char *);
2765 #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
2766 bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2767 extern void bfd_elf_add_obj_attr_int_string (bfd
*, int, unsigned int,
2768 unsigned int, const char *);
2769 #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
2770 bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
2773 extern char *_bfd_elf_attr_strdup (bfd
*, const char *);
2774 extern void _bfd_elf_copy_obj_attributes (bfd
*, bfd
*);
2775 extern int _bfd_elf_obj_attrs_arg_type (bfd
*, int, unsigned int);
2776 extern void _bfd_elf_parse_attributes (bfd
*, Elf_Internal_Shdr
*);
2777 extern bfd_boolean _bfd_elf_merge_object_attributes
2778 (bfd
*, struct bfd_link_info
*);
2779 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_low (bfd
*, bfd
*, int);
2780 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_list (bfd
*, bfd
*);
2781 extern Elf_Internal_Shdr
*_bfd_elf_single_rel_hdr (asection
*sec
);
2782 extern bfd_boolean
elf_read_notes (bfd
*, file_ptr
, bfd_size_type
, size_t);
2784 extern bfd_boolean _bfd_elf_parse_gnu_properties
2785 (bfd
*, Elf_Internal_Note
*);
2786 extern elf_property
* _bfd_elf_get_property
2787 (bfd
*, unsigned int, unsigned int);
2788 extern bfd
*_bfd_elf_link_setup_gnu_properties
2789 (struct bfd_link_info
*);
2790 extern bfd_size_type _bfd_elf_convert_gnu_property_size
2792 extern bfd_boolean _bfd_elf_convert_gnu_properties
2793 (bfd
*, asection
*, bfd
*, bfd_byte
**, bfd_size_type
*);
2795 /* The linker may need to keep track of the number of relocs that it
2796 decides to copy as dynamic relocs in check_relocs for each symbol.
2797 This is so that it can later discard them if they are found to be
2798 unnecessary. We can store the information in a field extending the
2799 regular ELF linker hash table. */
2801 struct elf_dyn_relocs
2803 struct elf_dyn_relocs
*next
;
2805 /* The input section of the reloc. */
2808 /* Total number of relocs copied for the input section. */
2809 bfd_size_type count
;
2811 /* Number of pc-relative relocs copied for the input section. */
2812 bfd_size_type pc_count
;
2815 extern bfd_boolean _bfd_elf_create_ifunc_sections
2816 (bfd
*, struct bfd_link_info
*);
2817 extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
2818 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2819 struct elf_dyn_relocs
**, bfd_boolean
*, unsigned int,
2820 unsigned int, unsigned int, bfd_boolean
);
2822 extern void elf_append_rela (bfd
*, asection
*, Elf_Internal_Rela
*);
2823 extern void elf_append_rel (bfd
*, asection
*, Elf_Internal_Rela
*);
2825 extern bfd_vma
elf64_r_info (bfd_vma
, bfd_vma
);
2826 extern bfd_vma
elf64_r_sym (bfd_vma
);
2827 extern bfd_vma
elf32_r_info (bfd_vma
, bfd_vma
);
2828 extern bfd_vma
elf32_r_sym (bfd_vma
);
2830 extern bfd_boolean
is_debuginfo_file (bfd
*);
2832 /* Large common section. */
2833 extern asection _bfd_elf_large_com_section
;
2835 /* Hash for local symbol with the first section id, ID, in the input
2836 file and the local symbol index, SYM. */
2837 #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
2838 (((((ID) & 0xff) << 24) | (((ID) & 0xff00) << 8)) \
2839 ^ (SYM) ^ ((ID) >> 16))
2841 /* This is the condition under which finish_dynamic_symbol will be called.
2842 If our finish_dynamic_symbol isn't called, we'll need to do something
2843 about initializing any .plt and .got entries in relocate_section. */
2844 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
2846 && ((SHARED) || !(H)->forced_local) \
2847 && ((H)->dynindx != -1 || (H)->forced_local))
2849 /* This macro is to avoid lots of duplicated code in the body
2850 of xxx_relocate_section() in the various elfxx-xxxx.c files. */
2851 #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \
2852 r_symndx, symtab_hdr, sym_hashes, \
2853 h, sec, relocation, \
2854 unresolved_reloc, warned, ignored) \
2857 /* It seems this can happen with erroneous or unsupported \
2858 input (mixing a.out and elf in an archive, for example.) */ \
2859 if (sym_hashes == NULL) \
2862 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \
2864 if (info->wrap_hash != NULL \
2865 && (input_section->flags & SEC_DEBUGGING) != 0) \
2866 h = ((struct elf_link_hash_entry *) \
2867 unwrap_hash_lookup (info, input_bfd, &h->root)); \
2869 while (h->root.type == bfd_link_hash_indirect \
2870 || h->root.type == bfd_link_hash_warning) \
2871 h = (struct elf_link_hash_entry *) h->root.u.i.link; \
2875 unresolved_reloc = FALSE; \
2877 if (h->root.type == bfd_link_hash_defined \
2878 || h->root.type == bfd_link_hash_defweak) \
2880 sec = h->root.u.def.section; \
2882 || sec->output_section == NULL) \
2883 /* Set a flag that will be cleared later if we find a \
2884 relocation value for this symbol. output_section \
2885 is typically NULL for symbols satisfied by a shared \
2887 unresolved_reloc = TRUE; \
2889 relocation = (h->root.u.def.value \
2890 + sec->output_section->vma \
2891 + sec->output_offset); \
2893 else if (h->root.type == bfd_link_hash_undefweak) \
2895 else if (info->unresolved_syms_in_objects == RM_IGNORE \
2896 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \
2898 else if (!bfd_link_relocatable (info)) \
2901 err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \
2902 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \
2903 (*info->callbacks->undefined_symbol) (info, \
2904 h->root.root.string, \
2907 rel->r_offset, err); \
2910 (void) unresolved_reloc; \
2916 /* This macro is to avoid lots of duplicated code in the body of the
2917 loop over relocations in xxx_relocate_section() in the various
2920 Handle relocations against symbols from removed linkonce sections,
2921 or sections discarded by a linker script. When doing a relocatable
2922 link, we remove such relocations. Otherwise, we just want the
2923 section contents zeroed and avoid any special processing. */
2924 #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
2925 rel, count, relend, \
2926 howto, index, contents) \
2929 _bfd_clear_contents (howto, input_bfd, input_section, \
2930 contents, rel[index].r_offset); \
2932 if (bfd_link_relocatable (info) \
2933 && (input_section->flags & SEC_DEBUGGING)) \
2935 /* Only remove relocations in debug sections since other \
2936 sections may require relocations. */ \
2937 Elf_Internal_Shdr *rel_hdr; \
2939 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
2941 /* Avoid empty output section. */ \
2942 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
2944 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2945 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
2946 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2948 memmove (rel, rel + count, \
2949 (relend - rel - count) * sizeof (*rel)); \
2951 input_section->reloc_count -= count; \
2958 for (i_ = 0; i_ < count; i_++) \
2960 rel[i_].r_info = 0; \
2961 rel[i_].r_addend = 0; \
2967 /* Will a symbol be bound to the definition within the shared
2968 library, if any. A unique symbol can never be bound locally. */
2969 #define SYMBOLIC_BIND(INFO, H) \
2970 (!(H)->unique_global \
2971 && ((INFO)->symbolic \
2972 || (H)->start_stop \
2973 || ((INFO)->dynamic && !(H)->dynamic)))
2975 /* Determine if a section contains CTF data, using its name. */
2976 static inline bfd_boolean
2977 bfd_section_is_ctf (const asection
*sec
)
2979 const char *name
= bfd_section_name (sec
);
2980 return strncmp (name
, ".ctf", 4) == 0 && (name
[4] == 0 || name
[4] == '.');
2986 #endif /* _LIBELF_H_ */