1 /* BFD back-end data structures for ELF files.
2 Copyright (C) 1992-2020 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 dynamic BFD's loaded in the link. */
641 struct elf_link_loaded_list
*dyn_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 (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_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 is called to initialise ELF file header info.
1196 Customised versions can modify things like the OS and ABI version. */
1197 bfd_boolean (*elf_backend_init_file_header
)
1198 (bfd
*, struct bfd_link_info
*);
1200 /* This function, if defined, prints a symbol to file and returns the
1201 name of the symbol to be printed. It should return NULL to fall
1202 back to default symbol printing. */
1203 const char *(*elf_backend_print_symbol_all
)
1204 (bfd
*, void *, asymbol
*);
1206 /* This function, if defined, is called after all local symbols and
1207 global symbols converted to locals are emitted into the symtab
1208 section. It allows the backend to emit special local symbols
1209 not handled in the hash table. */
1210 bfd_boolean (*elf_backend_output_arch_local_syms
)
1211 (bfd
*, struct bfd_link_info
*, void *,
1212 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1213 struct elf_link_hash_entry
*));
1215 /* This function, if defined, is called after all symbols are emitted
1216 into the symtab section. It allows the backend to emit special
1217 global symbols not handled in the hash table. */
1218 bfd_boolean (*elf_backend_output_arch_syms
)
1219 (bfd
*, struct bfd_link_info
*, void *,
1220 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1221 struct elf_link_hash_entry
*));
1223 /* Filter what symbols of the output file to include in the import
1224 library if one is created. */
1225 unsigned int (*elf_backend_filter_implib_symbols
)
1226 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
1228 /* Copy any information related to dynamic linking from a pre-existing
1229 symbol to a newly created symbol. Also called to copy flags and
1230 other back-end info to a weakdef, in which case the symbol is not
1231 newly created and plt/got refcounts and dynamic indices should not
1233 void (*elf_backend_copy_indirect_symbol
)
1234 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
1235 struct elf_link_hash_entry
*);
1237 /* Modify any information related to dynamic linking such that the
1238 symbol is not exported. */
1239 void (*elf_backend_hide_symbol
)
1240 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
1242 /* A function to do additional symbol fixup, called by
1243 _bfd_elf_fix_symbol_flags. */
1244 bfd_boolean (*elf_backend_fixup_symbol
)
1245 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
1247 /* Merge the backend specific symbol attribute. */
1248 void (*elf_backend_merge_symbol_attribute
)
1249 (struct elf_link_hash_entry
*, const Elf_Internal_Sym
*, bfd_boolean
,
1252 /* This function, if defined, will return a string containing the
1253 name of a target-specific dynamic tag. */
1254 char *(*elf_backend_get_target_dtag
)
1257 /* Decide whether an undefined symbol is special and can be ignored.
1258 This is the case for OPTIONAL symbols on IRIX. */
1259 bfd_boolean (*elf_backend_ignore_undef_symbol
)
1260 (struct elf_link_hash_entry
*);
1262 /* Emit relocations. Overrides default routine for emitting relocs,
1263 except during a relocatable link, or if all relocs are being emitted. */
1264 bfd_boolean (*elf_backend_emit_relocs
)
1265 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
1266 struct elf_link_hash_entry
**);
1268 /* Update relocations. It is allowed to change the number and the order.
1269 In such a case hashes should be invalidated. */
1270 void (*elf_backend_update_relocs
)
1271 (asection
*, struct bfd_elf_section_reloc_data
*);
1273 /* Count relocations. Not called for relocatable links
1274 or if all relocs are being preserved in the output. */
1275 unsigned int (*elf_backend_count_relocs
)
1276 (struct bfd_link_info
*, asection
*);
1278 /* Count additionals relocations. Called for relocatable links if
1279 additional relocations needs to be created. */
1280 unsigned int (*elf_backend_count_additional_relocs
)
1283 /* Say whether to sort relocs output by ld -r and ld --emit-relocs,
1284 by r_offset. If NULL, default to true. */
1285 bfd_boolean (*sort_relocs_p
)
1288 /* This function, if defined, is called when an NT_PRSTATUS note is found
1290 bfd_boolean (*elf_backend_grok_prstatus
)
1291 (bfd
*, Elf_Internal_Note
*);
1293 /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
1294 note is found in a core file. */
1295 bfd_boolean (*elf_backend_grok_psinfo
)
1296 (bfd
*, Elf_Internal_Note
*);
1298 /* This function, if defined, is called when a "FreeBSD" NT_PRSTATUS
1299 note is found in a core file. */
1300 bfd_boolean (*elf_backend_grok_freebsd_prstatus
)
1301 (bfd
*, Elf_Internal_Note
*);
1303 /* This function, if defined, is called to write a note to a corefile. */
1304 char *(*elf_backend_write_core_note
)
1305 (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...);
1307 /* This function, if defined, is called to convert target-specific
1308 section flag names into hex values. */
1309 flagword (*elf_backend_lookup_section_flags_hook
)
1312 /* This function returns class of a reloc type. */
1313 enum elf_reloc_type_class (*elf_backend_reloc_type_class
)
1314 (const struct bfd_link_info
*, const asection
*, const Elf_Internal_Rela
*);
1316 /* This function, if defined, removes information about discarded functions
1317 from other sections which mention them. */
1318 bfd_boolean (*elf_backend_discard_info
)
1319 (bfd
*, struct elf_reloc_cookie
*, struct bfd_link_info
*);
1321 /* This function, if defined, signals that the function above has removed
1322 the discarded relocations for this section. */
1323 bfd_boolean (*elf_backend_ignore_discarded_relocs
)
1326 /* What to do when ld finds relocations against symbols defined in
1327 discarded sections. */
1328 unsigned int (*action_discarded
)
1331 /* This function returns the width of FDE pointers in bytes, or 0 if
1332 that can't be determined for some reason. The default definition
1333 goes by the bfd's EI_CLASS. */
1334 unsigned int (*elf_backend_eh_frame_address_size
)
1335 (bfd
*, const asection
*);
1337 /* These functions tell elf-eh-frame whether to attempt to turn
1338 absolute or lsda encodings into pc-relative ones. The default
1339 definition enables these transformations. */
1340 bfd_boolean (*elf_backend_can_make_relative_eh_frame
)
1341 (bfd
*, struct bfd_link_info
*, asection
*);
1342 bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame
)
1343 (bfd
*, struct bfd_link_info
*, asection
*);
1345 /* This function returns an encoding after computing the encoded
1346 value (and storing it in ENCODED) for the given OFFSET into OSEC,
1347 to be stored in at LOC_OFFSET into the LOC_SEC input section.
1348 The default definition chooses a 32-bit PC-relative encoding. */
1349 bfd_byte (*elf_backend_encode_eh_address
)
1350 (bfd
*abfd
, struct bfd_link_info
*info
,
1351 asection
*osec
, bfd_vma offset
,
1352 asection
*loc_sec
, bfd_vma loc_offset
,
1355 /* This function, if defined, may write out the given section.
1356 Returns TRUE if it did so and FALSE if the caller should. */
1357 bfd_boolean (*elf_backend_write_section
)
1358 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
1360 /* The level of IRIX compatibility we're striving for.
1361 MIPS ELF specific function. */
1362 irix_compat_t (*elf_backend_mips_irix_compat
)
1365 reloc_howto_type
*(*elf_backend_mips_rtype_to_howto
)
1366 (bfd
*, unsigned int, bfd_boolean
);
1368 /* The swapping table to use when dealing with ECOFF information.
1369 Used for the MIPS ELF .mdebug section. */
1370 const struct ecoff_debug_swap
*elf_backend_ecoff_debug_swap
;
1372 /* This function implements `bfd_elf_bfd_from_remote_memory';
1373 see elf.c, elfcode.h. */
1374 bfd
*(*elf_backend_bfd_from_remote_memory
)
1375 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
1376 int (*target_read_memory
) (bfd_vma vma
, bfd_byte
*myaddr
,
1377 bfd_size_type len
));
1379 bfd_boolean (*elf_backend_core_find_build_id
) (bfd
*, bfd_vma
);
1381 /* This function is used by `_bfd_elf_get_synthetic_symtab';
1383 bfd_vma (*plt_sym_val
) (bfd_vma
, const asection
*, const arelent
*);
1385 /* Is symbol defined in common section? */
1386 bfd_boolean (*common_definition
) (Elf_Internal_Sym
*);
1388 /* Return a common section index for section. */
1389 unsigned int (*common_section_index
) (asection
*);
1391 /* Return a common section for section. */
1392 asection
*(*common_section
) (asection
*);
1394 /* Return TRUE if we can merge 2 definitions. */
1395 bfd_boolean (*merge_symbol
) (struct elf_link_hash_entry
*,
1396 const Elf_Internal_Sym
*, asection
**,
1397 bfd_boolean
, bfd_boolean
,
1398 bfd
*, const asection
*);
1400 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
1401 bfd_boolean (*elf_hash_symbol
) (struct elf_link_hash_entry
*);
1403 /* If non-NULL, called to register the location of XLAT_LOC within
1404 .MIPS.xhash at which real final dynindx for H will be written.
1405 If XLAT_LOC is zero, the symbol is not included in
1406 .MIPS.xhash and no dynindx will be written. */
1407 void (*record_xhash_symbol
)
1408 (struct elf_link_hash_entry
*h
, bfd_vma xlat_loc
);
1410 /* Return TRUE if type is a function symbol type. */
1411 bfd_boolean (*is_function_type
) (unsigned int type
);
1413 /* If the ELF symbol SYM might be a function in SEC, return the
1414 function size and set *CODE_OFF to the function's entry point,
1415 otherwise return zero. */
1416 bfd_size_type (*maybe_function_sym
) (const asymbol
*sym
, asection
*sec
,
1419 /* Given NAME, the name of a relocation section stripped of its
1420 .rel/.rela prefix, return the section in ABFD to which the
1421 relocations apply. */
1422 asection
*(*get_reloc_section
) (bfd
*abfd
, const char *name
);
1424 /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
1425 has a type >= SHT_LOOS. Returns TRUE if the fields were initialised,
1426 FALSE otherwise. Can be called multiple times for a given section,
1427 until it returns TRUE. Most of the times it is called ISECTION will be
1428 set to an input section that might be associated with the output section.
1429 The last time that it is called, ISECTION will be set to NULL. */
1430 bfd_boolean (*elf_backend_copy_special_section_fields
)
1431 (const bfd
*ibfd
, bfd
*obfd
, const Elf_Internal_Shdr
*isection
,
1432 Elf_Internal_Shdr
*osection
);
1434 /* Used to handle bad SHF_LINK_ORDER input. */
1435 void (*link_order_error_handler
) (const char *, ...);
1437 /* Name of the PLT relocation section. */
1438 const char *relplt_name
;
1440 /* Alternate EM_xxxx machine codes for this backend. */
1441 int elf_machine_alt1
;
1442 int elf_machine_alt2
;
1444 const struct elf_size_info
*s
;
1446 /* An array of target specific special sections. */
1447 const struct bfd_elf_special_section
*special_sections
;
1449 /* The size in bytes of the header for the GOT. This includes the
1450 so-called reserved entries on some systems. */
1451 bfd_vma got_header_size
;
1453 /* The size of the GOT entry for the symbol pointed to by H if non-NULL,
1454 otherwise by the local symbol with index SYMNDX in IBFD. */
1455 bfd_vma (*got_elt_size
) (bfd
*, struct bfd_link_info
*,
1456 struct elf_link_hash_entry
*h
,
1457 bfd
*ibfd
, unsigned long symndx
);
1459 /* The vendor name to use for a processor-standard attributes section. */
1460 const char *obj_attrs_vendor
;
1462 /* The section name to use for a processor-standard attributes section. */
1463 const char *obj_attrs_section
;
1465 /* Return 1, 2 or 3 to indicate what type of arguments a
1466 processor-specific tag takes. */
1467 int (*obj_attrs_arg_type
) (int);
1469 /* The section type to use for an attributes section. */
1470 unsigned int obj_attrs_section_type
;
1472 /* This function determines the order in which any attributes are
1473 written. It must be defined for input in the range
1474 LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range
1475 is used in order to make unity easy). The returned value is the
1476 actual tag number to place in the input position. */
1477 int (*obj_attrs_order
) (int);
1479 /* Handle merging unknown attributes; either warn and return TRUE,
1480 or give an error and return FALSE. */
1481 bfd_boolean (*obj_attrs_handle_unknown
) (bfd
*, int);
1483 /* Parse GNU properties. Return the property kind. If the property
1484 is corrupt, issue an error message and return property_corrupt. */
1485 enum elf_property_kind (*parse_gnu_properties
) (bfd
*, unsigned int,
1489 /* Merge GNU properties. Return TRUE if property is updated. */
1490 bfd_boolean (*merge_gnu_properties
) (struct bfd_link_info
*, bfd
*, bfd
*,
1491 elf_property
*, elf_property
*);
1493 /* Set up GNU properties. */
1494 bfd
*(*setup_gnu_properties
) (struct bfd_link_info
*);
1496 /* Fix up GNU properties. */
1497 void (*fixup_gnu_properties
) (struct bfd_link_info
*,
1498 elf_property_list
**);
1500 /* Encoding used for compact EH tables. */
1501 int (*compact_eh_encoding
) (struct bfd_link_info
*);
1503 /* Opcode representing no unwind. */
1504 int (*cant_unwind_opcode
) (struct bfd_link_info
*);
1506 /* Called when emitting an ELF symbol whoes input version had an
1507 ST_SHNDX field set to a value in the range SHN_LOPROC..SHN_HIOS.
1508 Returns the value to be installed in the ST_SHNDX field of the
1509 emitted symbol. If not defined, the value is left unchanged. */
1510 unsigned int (*symbol_section_index
) (bfd
*, elf_symbol_type
*);
1512 /* This is non-zero if static TLS segments require a special alignment. */
1513 unsigned static_tls_alignment
;
1515 /* Alignment for the PT_GNU_STACK segment. */
1516 unsigned stack_align
;
1518 /* Flag bits to assign to a section of type SHT_STRTAB. */
1519 unsigned long elf_strtab_flags
;
1521 /* This is TRUE if the linker should act like collect and gather
1522 global constructors and destructors by name. This is TRUE for
1523 MIPS ELF because the Irix 5 tools can not handle the .init
1525 unsigned collect
: 1;
1527 /* This is TRUE if the linker should ignore changes to the type of a
1528 symbol. This is TRUE for MIPS ELF because some Irix 5 objects
1529 record undefined functions as STT_OBJECT although the definitions
1531 unsigned type_change_ok
: 1;
1533 /* Whether the backend may use REL relocations. (Some backends use
1534 both REL and RELA relocations, and this flag is set for those
1536 unsigned may_use_rel_p
: 1;
1538 /* Whether the backend may use RELA relocations. (Some backends use
1539 both REL and RELA relocations, and this flag is set for those
1541 unsigned may_use_rela_p
: 1;
1543 /* Whether the default relocation type is RELA. If a backend with
1544 this flag set wants REL relocations for a particular section,
1545 it must note that explicitly. Similarly, if this flag is clear,
1546 and the backend wants RELA relocations for a particular
1548 unsigned default_use_rela_p
: 1;
1550 /* True if PLT and copy relocations should be RELA by default. */
1551 unsigned rela_plts_and_copies_p
: 1;
1553 /* Set if RELA relocations for a relocatable link can be handled by
1554 generic code. Backends that set this flag need do nothing in the
1555 backend relocate_section routine for relocatable linking. */
1556 unsigned rela_normal
: 1;
1558 /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT
1560 unsigned dtrel_excludes_plt
: 1;
1562 /* TRUE if addresses "naturally" sign extend. This is used when
1563 swapping in from Elf32 when BFD64. */
1564 unsigned sign_extend_vma
: 1;
1566 unsigned want_got_plt
: 1;
1567 unsigned plt_readonly
: 1;
1568 unsigned want_plt_sym
: 1;
1569 unsigned plt_not_loaded
: 1;
1570 unsigned plt_alignment
: 4;
1571 unsigned can_gc_sections
: 1;
1572 unsigned can_refcount
: 1;
1573 unsigned want_got_sym
: 1;
1574 unsigned want_dynbss
: 1;
1575 unsigned want_dynrelro
: 1;
1577 /* Targets which do not support physical addressing often require
1578 that the p_paddr field in the section header to be set to zero.
1579 This field indicates whether this behavior is required. */
1580 unsigned want_p_paddr_set_to_zero
: 1;
1582 /* Target has broken hardware and/or kernel that requires pages not
1583 to be mapped twice with different permissions. */
1584 unsigned no_page_alias
: 1;
1586 /* True if an object file lacking a .note.GNU-stack section
1587 should be assumed to be requesting exec stack. At least one
1588 other file in the link needs to have a .note.GNU-stack section
1589 for a PT_GNU_STACK segment to be created. */
1590 unsigned default_execstack
: 1;
1592 /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize
1593 in length rather than sec->size in length, if sec->rawsize is
1594 non-zero and smaller than sec->size. */
1595 unsigned caches_rawsize
: 1;
1597 /* Address of protected data defined in the shared library may be
1598 external, i.e., due to copy relocation. */
1599 unsigned extern_protected_data
: 1;
1601 /* True if `_bfd_elf_link_renumber_dynsyms' must be called even for
1603 unsigned always_renumber_dynsyms
: 1;
1605 /* True if the 32-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1606 members use a 16-bit data type. */
1607 unsigned linux_prpsinfo32_ugid16
: 1;
1609 /* True if the 64-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1610 members use a 16-bit data type. */
1611 unsigned linux_prpsinfo64_ugid16
: 1;
1614 /* Information about reloc sections associated with a bfd_elf_section_data
1616 struct bfd_elf_section_reloc_data
1618 /* The ELF header for the reloc section associated with this
1620 Elf_Internal_Shdr
*hdr
;
1621 /* The number of relocations currently assigned to HDR. */
1623 /* The ELF section number of the reloc section. Only used for an
1626 /* Used by the backend linker to store the symbol hash table entries
1627 associated with relocs against global symbols. */
1628 struct elf_link_hash_entry
**hashes
;
1631 /* Information stored for each BFD section in an ELF file. This
1632 structure is allocated by elf_new_section_hook. */
1634 struct bfd_elf_section_data
1636 /* The ELF header for this section. */
1637 Elf_Internal_Shdr this_hdr
;
1639 /* INPUT_SECTION_FLAGS if specified in the linker script. */
1640 struct flag_info
*section_flag_info
;
1642 /* Information about the REL and RELA reloc sections associated
1643 with this section, if any. */
1644 struct bfd_elf_section_reloc_data rel
, rela
;
1646 /* The ELF section number of this section. */
1649 /* Used by the backend linker when generating a shared library to
1650 record the dynamic symbol index for a section symbol
1651 corresponding to this section. A value of 0 means that there is
1652 no dynamic symbol for this section. */
1655 /* A pointer to the linked-to section for SHF_LINK_ORDER. */
1656 asection
*linked_to
;
1658 /* A pointer to the swapped relocs. If the section uses REL relocs,
1659 rather than RELA, all the r_addend fields will be zero. This
1660 pointer may be NULL. It is used by the backend linker. */
1661 Elf_Internal_Rela
*relocs
;
1663 /* A pointer to a linked list tracking dynamic relocs copied for
1667 /* A pointer to the bfd section used for dynamic relocs. */
1671 /* Group name, if this section is a member of a group. */
1674 /* Group signature sym, if this is the SHT_GROUP section. */
1675 struct bfd_symbol
*id
;
1678 /* For a member of a group, points to the SHT_GROUP section.
1679 NULL for the SHT_GROUP section itself and non-group sections. */
1680 asection
*sec_group
;
1682 /* A linked list of member sections in the group. Circular when used by
1683 the linker. For the SHT_GROUP section, points at first member. */
1684 asection
*next_in_group
;
1686 /* The FDEs associated with this section. The u.fde.next_in_section
1687 field acts as a chain pointer. */
1688 struct eh_cie_fde
*fde_list
;
1690 /* Link from a text section to its .eh_frame_entry section. */
1691 asection
*eh_frame_entry
;
1693 /* A pointer used for various section optimizations. */
1697 #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
1698 #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
1699 #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type)
1700 #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
1701 #define elf_section_info(sec) (elf_section_data(sec)->this_hdr.sh_info)
1702 #define elf_group_name(sec) (elf_section_data(sec)->group.name)
1703 #define elf_group_id(sec) (elf_section_data(sec)->group.id)
1704 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
1705 #define elf_fde_list(sec) (elf_section_data(sec)->fde_list)
1706 #define elf_sec_group(sec) (elf_section_data(sec)->sec_group)
1707 #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry)
1709 #define xvec_get_elf_backend_data(xvec) \
1710 ((const struct elf_backend_data *) (xvec)->backend_data)
1712 #define get_elf_backend_data(abfd) \
1713 xvec_get_elf_backend_data ((abfd)->xvec)
1715 /* The least object attributes (within an attributes subsection) known
1716 for any target. Some code assumes that the value 0 is not used and
1717 the field for that attribute can instead be used as a marker to
1718 indicate that attributes have been initialized. */
1719 #define LEAST_KNOWN_OBJ_ATTRIBUTE 2
1721 /* The maximum number of known object attributes for any target. */
1722 #define NUM_KNOWN_OBJ_ATTRIBUTES 71
1724 /* The value of an object attribute. The type indicates whether the attribute
1725 holds and integer, a string, or both. It can also indicate that there can
1726 be no default (i.e. all values must be written to file, even zero), or
1727 that the value is in error and should not be written to file. */
1729 typedef struct obj_attribute
1731 #define ATTR_TYPE_FLAG_INT_VAL (1 << 0)
1732 #define ATTR_TYPE_FLAG_STR_VAL (1 << 1)
1733 #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
1734 #define ATTR_TYPE_FLAG_ERROR (1 << 3)
1736 #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
1737 #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
1738 #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
1739 #define ATTR_TYPE_HAS_ERROR(TYPE) ((TYPE) & ATTR_TYPE_FLAG_ERROR)
1746 typedef struct obj_attribute_list
1748 struct obj_attribute_list
*next
;
1751 } obj_attribute_list
;
1753 /* Object attributes may either be defined by the processor ABI, index
1754 OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
1755 (and possibly also processor-specific), index OBJ_ATTR_GNU. */
1756 #define OBJ_ATTR_PROC 0
1757 #define OBJ_ATTR_GNU 1
1758 #define OBJ_ATTR_FIRST OBJ_ATTR_PROC
1759 #define OBJ_ATTR_LAST OBJ_ATTR_GNU
1761 /* The following object attribute tags are taken as generic, for all
1762 targets and for "gnu" where there is no target standard. */
1769 Tag_compatibility
= 32
1772 /* The following struct stores information about every SystemTap section
1773 found in the object file. */
1776 struct sdt_note
*next
;
1781 /* tdata information grabbed from an elf core file. */
1782 struct core_elf_obj_tdata
1791 /* Extra tdata information held for output ELF BFDs. */
1792 struct output_elf_obj_tdata
1794 struct elf_segment_map
*seg_map
;
1795 struct elf_strtab_hash
*strtab_ptr
;
1797 /* STT_SECTION symbols for each section */
1798 asymbol
**section_syms
;
1800 /* Used to determine if PT_GNU_EH_FRAME segment header should be
1802 asection
*eh_frame_hdr
;
1804 /* NT_GNU_BUILD_ID note type info. */
1807 bfd_boolean (*after_write_object_contents
) (bfd
*);
1812 /* Records the result of `get_program_header_size'. */
1813 bfd_size_type program_header_size
;
1815 /* Used when laying out sections. */
1816 file_ptr next_file_pos
;
1818 int num_section_syms
;
1819 unsigned int shstrtab_section
, strtab_section
;
1821 /* Segment flags for the PT_GNU_STACK segment. */
1822 unsigned int stack_flags
;
1824 /* Used to determine if the e_flags field has been initialized */
1825 bfd_boolean flags_init
;
1828 /* Indicate if the bfd contains SHF_GNU_MBIND sections or symbols that
1829 have the STT_GNU_IFUNC symbol type or STB_GNU_UNIQUE binding. Used
1830 to set the osabi field in the ELF header structure. */
1833 elf_gnu_osabi_mbind
= 1 << 0,
1834 elf_gnu_osabi_ifunc
= 1 << 1,
1835 elf_gnu_osabi_unique
= 1 << 2,
1838 typedef struct elf_section_list
1840 Elf_Internal_Shdr hdr
;
1842 struct elf_section_list
* next
;
1845 enum dynamic_lib_link_class
{
1849 DYN_NO_ADD_NEEDED
= 4,
1853 /* Some private data is stashed away for future use using the tdata pointer
1854 in the bfd structure. */
1856 struct elf_obj_tdata
1858 Elf_Internal_Ehdr elf_header
[1]; /* Actual data, but ref like ptr */
1859 Elf_Internal_Shdr
**elf_sect_ptr
;
1860 Elf_Internal_Phdr
*phdr
;
1861 Elf_Internal_Shdr symtab_hdr
;
1862 Elf_Internal_Shdr shstrtab_hdr
;
1863 Elf_Internal_Shdr strtab_hdr
;
1864 Elf_Internal_Shdr dynsymtab_hdr
;
1865 Elf_Internal_Shdr dynstrtab_hdr
;
1866 Elf_Internal_Shdr dynversym_hdr
;
1867 Elf_Internal_Shdr dynverref_hdr
;
1868 Elf_Internal_Shdr dynverdef_hdr
;
1869 elf_section_list
* symtab_shndx_list
;
1870 bfd_vma gp
; /* The gp value */
1871 unsigned int gp_size
; /* The gp size */
1872 unsigned int num_elf_sections
; /* elf_sect_ptr size */
1874 /* A mapping from external symbols to entries in the linker hash
1875 table, used when linking. This is indexed by the symbol index
1876 minus the sh_info field of the symbol table header. */
1877 struct elf_link_hash_entry
**sym_hashes
;
1879 /* Track usage and final offsets of GOT entries for local symbols.
1880 This array is indexed by symbol index. Elements are used
1881 identically to "got" in struct elf_link_hash_entry. */
1884 bfd_signed_vma
*refcounts
;
1886 struct got_entry
**ents
;
1889 /* The linker ELF emulation code needs to let the backend ELF linker
1890 know what filename should be used for a dynamic object if the
1891 dynamic object is found using a search. The emulation code then
1892 sometimes needs to know what name was actually used. Until the
1893 file has been added to the linker symbol table, this field holds
1894 the name the linker wants. After it has been added, it holds the
1895 name actually used, which will be the DT_SONAME entry if there is
1897 const char *dt_name
;
1899 /* The linker emulation needs to know what audit libs
1900 are used by a dynamic object. */
1901 const char *dt_audit
;
1903 /* Used by find_nearest_line entry point. */
1906 /* A place to stash dwarf1 info for this bfd. */
1907 struct dwarf1_debug
*dwarf1_find_line_info
;
1909 /* A place to stash dwarf2 info for this bfd. */
1910 void *dwarf2_find_line_info
;
1912 /* Stash away info for yet another find line/function variant. */
1913 void *elf_find_function_cache
;
1915 /* Number of symbol version definitions we are about to emit. */
1916 unsigned int cverdefs
;
1918 /* Number of symbol version references we are about to emit. */
1919 unsigned int cverrefs
;
1921 /* Symbol version definitions in external objects. */
1922 Elf_Internal_Verdef
*verdef
;
1924 /* Symbol version references to external objects. */
1925 Elf_Internal_Verneed
*verref
;
1927 /* A pointer to the .eh_frame section. */
1928 asection
*eh_frame_section
;
1930 /* Symbol buffer. */
1933 /* List of GNU properties. Will be updated by setup_gnu_properties
1934 after all input GNU properties are merged for output. */
1935 elf_property_list
*properties
;
1937 obj_attribute known_obj_attributes
[2][NUM_KNOWN_OBJ_ATTRIBUTES
];
1938 obj_attribute_list
*other_obj_attributes
[2];
1940 /* Linked-list containing information about every Systemtap section
1941 found in the object file. Each section corresponds to one entry
1943 struct sdt_note
*sdt_note_head
;
1945 Elf_Internal_Shdr
**group_sect_ptr
;
1948 /* Index into group_sect_ptr, updated by setup_group when finding a
1949 section's group. Used to optimize subsequent group searches. */
1950 unsigned int group_search_offset
;
1952 unsigned int symtab_section
, dynsymtab_section
;
1953 unsigned int dynversym_section
, dynverdef_section
, dynverref_section
;
1955 /* An identifier used to distinguish different target
1956 specific extensions to this structure. */
1957 ENUM_BITFIELD (elf_target_id
) object_id
: 6;
1959 /* Whether a dyanmic object was specified normally on the linker
1960 command line, or was specified when --as-needed was in effect,
1961 or was found via a DT_NEEDED entry. */
1962 ENUM_BITFIELD (dynamic_lib_link_class
) dyn_lib_class
: 4;
1964 /* Whether the bfd uses OS specific bits that require ELFOSABI_GNU. */
1965 ENUM_BITFIELD (elf_gnu_osabi
) has_gnu_osabi
: 3;
1967 /* Whether if the bfd contains the GNU_PROPERTY_NO_COPY_ON_PROTECTED
1969 unsigned int has_no_copy_on_protected
: 1;
1971 /* Irix 5 often screws up the symbol table, sorting local symbols
1972 after global symbols. This flag is set if the symbol table in
1973 this BFD appears to be screwed up. If it is, we ignore the
1974 sh_info field in the symbol table header, and always read all the
1976 unsigned int bad_symtab
: 1;
1978 /* Information grabbed from an elf core file. */
1979 struct core_elf_obj_tdata
*core
;
1981 /* More information held for output ELF BFDs. */
1982 struct output_elf_obj_tdata
*o
;
1985 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
1987 #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id)
1988 #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size)
1989 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
1990 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
1991 #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections)
1992 #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map)
1993 #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos)
1994 #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr)
1995 #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags)
1996 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr)
1997 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
1998 #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list)
1999 #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section)
2000 #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section)
2001 #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr)
2002 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
2003 #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
2004 #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
2005 #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
2006 #define elf_eh_frame_section(bfd) \
2007 (elf_tdata(bfd) -> eh_frame_section)
2008 #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms)
2009 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms)
2010 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
2011 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
2012 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
2013 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
2014 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
2015 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
2016 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
2017 #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
2018 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
2019 #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit)
2020 #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
2021 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
2022 #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init)
2023 #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes)
2024 #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes)
2025 #define elf_known_obj_attributes_proc(bfd) \
2026 (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC])
2027 #define elf_other_obj_attributes_proc(bfd) \
2028 (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
2029 #define elf_properties(bfd) (elf_tdata (bfd) -> properties)
2030 #define elf_has_no_copy_on_protected(bfd) \
2031 (elf_tdata(bfd) -> has_no_copy_on_protected)
2033 extern void _bfd_elf_swap_verdef_in
2034 (bfd
*, const Elf_External_Verdef
*, Elf_Internal_Verdef
*);
2035 extern void _bfd_elf_swap_verdef_out
2036 (bfd
*, const Elf_Internal_Verdef
*, Elf_External_Verdef
*);
2037 extern void _bfd_elf_swap_verdaux_in
2038 (bfd
*, const Elf_External_Verdaux
*, Elf_Internal_Verdaux
*);
2039 extern void _bfd_elf_swap_verdaux_out
2040 (bfd
*, const Elf_Internal_Verdaux
*, Elf_External_Verdaux
*);
2041 extern void _bfd_elf_swap_verneed_in
2042 (bfd
*, const Elf_External_Verneed
*, Elf_Internal_Verneed
*);
2043 extern void _bfd_elf_swap_verneed_out
2044 (bfd
*, const Elf_Internal_Verneed
*, Elf_External_Verneed
*);
2045 extern void _bfd_elf_swap_vernaux_in
2046 (bfd
*, const Elf_External_Vernaux
*, Elf_Internal_Vernaux
*);
2047 extern void _bfd_elf_swap_vernaux_out
2048 (bfd
*, const Elf_Internal_Vernaux
*, Elf_External_Vernaux
*);
2049 extern void _bfd_elf_swap_versym_in
2050 (bfd
*, const Elf_External_Versym
*, Elf_Internal_Versym
*);
2051 extern void _bfd_elf_swap_versym_out
2052 (bfd
*, const Elf_Internal_Versym
*, Elf_External_Versym
*);
2054 extern unsigned int _bfd_elf_section_from_bfd_section
2055 (bfd
*, asection
*);
2056 extern char *bfd_elf_string_from_elf_section
2057 (bfd
*, unsigned, unsigned);
2058 extern Elf_Internal_Sym
*bfd_elf_get_elf_syms
2059 (bfd
*, Elf_Internal_Shdr
*, size_t, size_t, Elf_Internal_Sym
*, void *,
2060 Elf_External_Sym_Shndx
*);
2061 extern char * bfd_elf_get_str_section (bfd
*, unsigned int);
2062 extern const char *bfd_elf_sym_name
2063 (bfd
*, Elf_Internal_Shdr
*, Elf_Internal_Sym
*, asection
*);
2065 extern bfd_boolean _bfd_elf_copy_private_bfd_data
2067 extern bfd_boolean _bfd_elf_print_private_bfd_data
2069 const char * _bfd_elf_get_symbol_version_string
2070 (bfd
*, asymbol
*, bfd_boolean
*);
2071 extern void bfd_elf_print_symbol
2072 (bfd
*, void *, asymbol
*, bfd_print_symbol_type
);
2074 extern unsigned int _bfd_elf_eh_frame_address_size
2075 (bfd
*, const asection
*);
2076 extern bfd_byte _bfd_elf_encode_eh_address
2077 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*osec
, bfd_vma offset
,
2078 asection
*loc_sec
, bfd_vma loc_offset
, bfd_vma
*encoded
);
2079 extern bfd_boolean _bfd_elf_can_make_relative
2080 (bfd
*input_bfd
, struct bfd_link_info
*info
, asection
*eh_frame_section
);
2082 extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
2083 (const struct bfd_link_info
*, const asection
*,
2084 const Elf_Internal_Rela
*);
2085 extern bfd_vma _bfd_elf_rela_local_sym
2086 (bfd
*, Elf_Internal_Sym
*, asection
**, Elf_Internal_Rela
*);
2087 extern bfd_vma _bfd_elf_rel_local_sym
2088 (bfd
*, Elf_Internal_Sym
*, asection
**, bfd_vma
);
2089 extern bfd_vma _bfd_elf_section_offset
2090 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2092 extern unsigned long bfd_elf_hash
2094 extern unsigned long bfd_elf_gnu_hash
2097 extern bfd_reloc_status_type bfd_elf_generic_reloc
2098 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
2099 extern bfd_boolean bfd_elf_allocate_object
2100 (bfd
*, size_t, enum elf_target_id
);
2101 extern bfd_boolean bfd_elf_make_object
2103 extern bfd_boolean bfd_elf_mkcorefile
2105 extern bfd_boolean _bfd_elf_make_section_from_shdr
2106 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
2107 extern bfd_boolean _bfd_elf_make_section_from_phdr
2108 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
2109 extern struct bfd_hash_entry
*_bfd_elf_link_hash_newfunc
2110 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);
2111 extern struct bfd_link_hash_table
*_bfd_elf_link_hash_table_create
2113 extern void _bfd_elf_link_hash_table_free
2115 extern void _bfd_elf_link_hash_copy_indirect
2116 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2117 struct elf_link_hash_entry
*);
2118 extern void _bfd_elf_link_hash_hide_symbol
2119 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
2120 extern void _bfd_elf_link_hide_symbol
2121 (bfd
*, struct bfd_link_info
*, struct bfd_link_hash_entry
*);
2122 extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
2123 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2124 extern bfd_boolean _bfd_elf_link_hash_table_init
2125 (struct elf_link_hash_table
*, bfd
*,
2126 struct bfd_hash_entry
*(*)
2127 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *),
2128 unsigned int, enum elf_target_id
);
2129 extern bfd_boolean _bfd_elf_slurp_version_tables
2130 (bfd
*, bfd_boolean
);
2131 extern bfd_boolean _bfd_elf_merge_sections
2132 (bfd
*, struct bfd_link_info
*);
2133 extern bfd_boolean _bfd_elf_match_sections_by_type
2134 (bfd
*, const asection
*, bfd
*, const asection
*);
2135 extern bfd_boolean bfd_elf_is_group_section
2136 (bfd
*, const struct bfd_section
*);
2137 extern const char *bfd_elf_group_name
2138 (bfd
*, const struct bfd_section
*);
2139 extern bfd_boolean _bfd_elf_section_already_linked
2140 (bfd
*, asection
*, struct bfd_link_info
*);
2141 extern void bfd_elf_set_group_contents
2142 (bfd
*, asection
*, void *);
2143 extern unsigned int _bfd_elf_filter_global_symbols
2144 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
2145 extern asection
*_bfd_elf_check_kept_section
2146 (asection
*, struct bfd_link_info
*);
2147 #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms
2148 extern void _bfd_elf_copy_link_hash_symbol_type
2149 (bfd
*, struct bfd_link_hash_entry
*, struct bfd_link_hash_entry
*);
2150 extern bfd_boolean _bfd_elf_size_group_sections
2151 (struct bfd_link_info
*);
2152 extern bfd_boolean _bfd_elf_fixup_group_sections
2153 (bfd
*, asection
*);
2154 extern bfd_boolean _bfd_elf_copy_private_header_data
2156 extern bfd_boolean _bfd_elf_copy_private_symbol_data
2157 (bfd
*, asymbol
*, bfd
*, asymbol
*);
2158 #define _bfd_generic_init_private_section_data \
2159 _bfd_elf_init_private_section_data
2160 extern bfd_boolean _bfd_elf_init_private_section_data
2161 (bfd
*, asection
*, bfd
*, asection
*, struct bfd_link_info
*);
2162 extern bfd_boolean _bfd_elf_copy_private_section_data
2163 (bfd
*, asection
*, bfd
*, asection
*);
2164 extern bfd_boolean _bfd_elf_write_object_contents
2166 extern bfd_boolean _bfd_elf_write_corefile_contents
2168 extern bfd_boolean _bfd_elf_set_section_contents
2169 (bfd
*, sec_ptr
, const void *, file_ptr
, bfd_size_type
);
2170 extern long _bfd_elf_get_symtab_upper_bound
2172 extern long _bfd_elf_canonicalize_symtab
2173 (bfd
*, asymbol
**);
2174 extern long _bfd_elf_get_dynamic_symtab_upper_bound
2176 extern long _bfd_elf_canonicalize_dynamic_symtab
2177 (bfd
*, asymbol
**);
2178 extern long _bfd_elf_get_synthetic_symtab
2179 (bfd
*, long, asymbol
**, long, asymbol
**, asymbol
**);
2180 extern long _bfd_elf_get_reloc_upper_bound
2182 extern long _bfd_elf_canonicalize_reloc
2183 (bfd
*, sec_ptr
, arelent
**, asymbol
**);
2184 extern asection
* _bfd_elf_get_dynamic_reloc_section
2185 (bfd
*, asection
*, bfd_boolean
);
2186 extern asection
* _bfd_elf_make_dynamic_reloc_section
2187 (asection
*, bfd
*, unsigned int, bfd
*, bfd_boolean
);
2188 extern long _bfd_elf_get_dynamic_reloc_upper_bound
2190 extern long _bfd_elf_canonicalize_dynamic_reloc
2191 (bfd
*, arelent
**, asymbol
**);
2192 extern asymbol
*_bfd_elf_make_empty_symbol
2194 extern void _bfd_elf_get_symbol_info
2195 (bfd
*, asymbol
*, symbol_info
*);
2196 extern bfd_boolean _bfd_elf_is_local_label_name
2197 (bfd
*, const char *);
2198 extern alent
*_bfd_elf_get_lineno
2200 extern bfd_boolean _bfd_elf_set_arch_mach
2201 (bfd
*, enum bfd_architecture
, unsigned long);
2202 extern bfd_boolean _bfd_elf_find_nearest_line
2203 (bfd
*, asymbol
**, asection
*, bfd_vma
,
2204 const char **, const char **, unsigned int *, unsigned int *);
2205 extern bfd_boolean _bfd_elf_find_line
2206 (bfd
*, asymbol
**, asymbol
*, const char **, unsigned int *);
2207 extern bfd_boolean _bfd_elf_find_inliner_info
2208 (bfd
*, const char **, const char **, unsigned int *);
2209 extern asymbol
*_bfd_elf_find_function
2210 (bfd
*, asymbol
**, asection
*, bfd_vma
, const char **, const char **);
2211 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
2212 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
2213 extern int _bfd_elf_sizeof_headers
2214 (bfd
*, struct bfd_link_info
*);
2215 extern bfd_boolean _bfd_elf_new_section_hook
2216 (bfd
*, asection
*);
2217 extern const struct bfd_elf_special_section
*_bfd_elf_get_special_section
2218 (const char *, const struct bfd_elf_special_section
*, unsigned int);
2219 extern const struct bfd_elf_special_section
*_bfd_elf_get_sec_type_attr
2220 (bfd
*, asection
*);
2222 extern bfd_boolean _bfd_elf_link_hide_sym_by_version
2223 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2225 /* If the target doesn't have reloc handling written yet: */
2226 extern bfd_boolean _bfd_elf_no_info_to_howto
2227 (bfd
*, arelent
*, Elf_Internal_Rela
*);
2229 extern bfd_boolean bfd_section_from_shdr
2230 (bfd
*, unsigned int shindex
);
2231 extern bfd_boolean bfd_section_from_phdr
2232 (bfd
*, Elf_Internal_Phdr
*, int);
2234 extern int _bfd_elf_symbol_from_bfd_symbol
2235 (bfd
*, asymbol
**);
2237 extern Elf_Internal_Sym
*bfd_sym_from_r_symndx
2238 (struct sym_cache
*, bfd
*, unsigned long);
2239 extern asection
*bfd_section_from_elf_index
2240 (bfd
*, unsigned int);
2242 extern struct elf_strtab_hash
* _bfd_elf_strtab_init
2244 extern void _bfd_elf_strtab_free
2245 (struct elf_strtab_hash
*);
2246 extern size_t _bfd_elf_strtab_add
2247 (struct elf_strtab_hash
*, const char *, bfd_boolean
);
2248 extern void _bfd_elf_strtab_addref
2249 (struct elf_strtab_hash
*, size_t);
2250 extern void _bfd_elf_strtab_delref
2251 (struct elf_strtab_hash
*, size_t);
2252 extern unsigned int _bfd_elf_strtab_refcount
2253 (struct elf_strtab_hash
*, size_t);
2254 extern void _bfd_elf_strtab_clear_all_refs
2255 (struct elf_strtab_hash
*);
2256 extern void *_bfd_elf_strtab_save
2257 (struct elf_strtab_hash
*);
2258 extern void _bfd_elf_strtab_restore
2259 (struct elf_strtab_hash
*, void *);
2260 extern bfd_size_type _bfd_elf_strtab_size
2261 (struct elf_strtab_hash
*);
2262 extern bfd_size_type _bfd_elf_strtab_len
2263 (struct elf_strtab_hash
*);
2264 extern bfd_size_type _bfd_elf_strtab_offset
2265 (struct elf_strtab_hash
*, size_t);
2266 extern const char * _bfd_elf_strtab_str
2267 (struct elf_strtab_hash
*, size_t idx
, bfd_size_type
*offset
);
2268 extern bfd_boolean _bfd_elf_strtab_emit
2269 (bfd
*, struct elf_strtab_hash
*);
2270 extern void _bfd_elf_strtab_finalize
2271 (struct elf_strtab_hash
*);
2273 extern bfd_boolean bfd_elf_parse_eh_frame_entries
2274 (bfd
*, struct bfd_link_info
*);
2275 extern bfd_boolean _bfd_elf_parse_eh_frame_entry
2276 (struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2277 extern void _bfd_elf_parse_eh_frame
2278 (bfd
*, struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2279 extern bfd_boolean _bfd_elf_end_eh_frame_parsing
2280 (struct bfd_link_info
*info
);
2282 extern bfd_boolean _bfd_elf_discard_section_eh_frame
2283 (bfd
*, struct bfd_link_info
*, asection
*,
2284 bfd_boolean (*) (bfd_vma
, void *), struct elf_reloc_cookie
*);
2285 extern bfd_boolean _bfd_elf_adjust_eh_frame_global_symbol
2286 (struct elf_link_hash_entry
*, void *);
2287 extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
2288 (bfd
*, struct bfd_link_info
*);
2289 extern bfd_vma _bfd_elf_eh_frame_section_offset
2290 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2291 extern bfd_boolean _bfd_elf_write_section_eh_frame
2292 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2293 bfd_boolean _bfd_elf_write_section_eh_frame_entry
2294 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2295 extern bfd_boolean
_bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info
*);
2296 extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
2297 (bfd
*, struct bfd_link_info
*);
2298 extern bfd_boolean _bfd_elf_eh_frame_present
2299 (struct bfd_link_info
*);
2300 extern bfd_boolean _bfd_elf_eh_frame_entry_present
2301 (struct bfd_link_info
*);
2302 extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
2303 (struct bfd_link_info
*);
2305 extern bfd_boolean
_bfd_elf_hash_symbol (struct elf_link_hash_entry
*);
2307 extern long _bfd_elf_link_lookup_local_dynindx
2308 (struct bfd_link_info
*, bfd
*, long);
2309 extern bfd_boolean _bfd_elf_compute_section_file_positions
2310 (bfd
*, struct bfd_link_info
*);
2311 extern file_ptr _bfd_elf_assign_file_position_for_section
2312 (Elf_Internal_Shdr
*, file_ptr
, bfd_boolean
);
2313 extern bfd_boolean _bfd_elf_modify_headers
2314 (bfd
*, struct bfd_link_info
*);
2316 extern bfd_boolean _bfd_elf_validate_reloc
2319 extern bfd_boolean bfd_elf_record_link_assignment
2320 (bfd
*, struct bfd_link_info
*, const char *, bfd_boolean
,
2322 extern bfd_boolean
bfd_elf_stack_segment_size (bfd
*, struct bfd_link_info
*,
2323 const char *, bfd_vma
);
2324 extern bfd_boolean bfd_elf_size_dynamic_sections
2325 (bfd
*, const char *, const char *, const char *, const char *, const char *,
2326 const char * const *, struct bfd_link_info
*, struct bfd_section
**);
2327 extern bfd_boolean bfd_elf_size_dynsym_hash_dynstr
2328 (bfd
*, struct bfd_link_info
*);
2329 extern bfd_boolean bfd_elf_get_bfd_needed_list
2330 (bfd
*, struct bfd_link_needed_list
**);
2331 extern struct bfd_link_needed_list
*bfd_elf_get_needed_list
2332 (bfd
*, struct bfd_link_info
*);
2333 extern void bfd_elf_set_dt_needed_name
2334 (bfd
*, const char *);
2335 extern const char *bfd_elf_get_dt_soname
2337 extern void bfd_elf_set_dyn_lib_class
2338 (bfd
*, enum dynamic_lib_link_class
);
2339 extern int bfd_elf_get_dyn_lib_class
2341 extern struct bfd_link_needed_list
*bfd_elf_get_runpath_list
2342 (bfd
*, struct bfd_link_info
*);
2343 extern int bfd_elf_discard_info
2344 (bfd
*, struct bfd_link_info
*);
2345 extern unsigned int _bfd_elf_default_action_discarded
2346 (struct bfd_section
*);
2347 extern struct bfd_section
*_bfd_elf_tls_setup
2348 (bfd
*, struct bfd_link_info
*);
2350 extern bfd_boolean _bfd_elf_link_create_dynamic_sections
2351 (bfd
*, struct bfd_link_info
*);
2352 extern bfd_boolean _bfd_elf_omit_section_dynsym_default
2353 (bfd
*, struct bfd_link_info
*, asection
*);
2354 extern bfd_boolean _bfd_elf_omit_section_dynsym_all
2355 (bfd
*, struct bfd_link_info
*, asection
*);
2356 extern bfd_boolean _bfd_elf_create_dynamic_sections
2357 (bfd
*, struct bfd_link_info
*);
2358 extern bfd_boolean _bfd_elf_create_got_section
2359 (bfd
*, struct bfd_link_info
*);
2360 extern asection
*_bfd_elf_section_for_symbol
2361 (struct elf_reloc_cookie
*, unsigned long, bfd_boolean
);
2362 extern struct elf_link_hash_entry
*_bfd_elf_define_linkage_sym
2363 (bfd
*, struct bfd_link_info
*, asection
*, const char *);
2364 extern void _bfd_elf_init_1_index_section
2365 (bfd
*, struct bfd_link_info
*);
2366 extern void _bfd_elf_init_2_index_sections
2367 (bfd
*, struct bfd_link_info
*);
2369 extern bfd_boolean _bfd_elfcore_make_pseudosection
2370 (bfd
*, char *, size_t, ufile_ptr
);
2371 extern char *_bfd_elfcore_strndup
2372 (bfd
*, char *, size_t);
2374 extern Elf_Internal_Rela
*_bfd_elf_link_read_relocs
2375 (bfd
*, asection
*, void *, Elf_Internal_Rela
*, bfd_boolean
);
2377 extern bfd_boolean _bfd_elf_link_output_relocs
2378 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
2379 struct elf_link_hash_entry
**);
2381 extern bfd_boolean _bfd_elf_adjust_dynamic_copy
2382 (struct bfd_link_info
*, struct elf_link_hash_entry
*, asection
*);
2384 extern bfd_boolean _bfd_elf_dynamic_symbol_p
2385 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2387 extern bfd_boolean _bfd_elf_symbol_refs_local_p
2388 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2390 extern bfd_reloc_status_type bfd_elf_perform_complex_relocation
2391 (bfd
*, asection
*, bfd_byte
*, Elf_Internal_Rela
*, bfd_vma
);
2393 extern bfd_boolean _bfd_elf_setup_sections
2396 extern struct bfd_link_hash_entry
*bfd_elf_define_start_stop
2397 (struct bfd_link_info
*, const char *, asection
*);
2399 extern bfd_boolean
_bfd_elf_init_file_header (bfd
*, struct bfd_link_info
*);
2401 extern bfd_boolean
_bfd_elf_final_write_processing (bfd
*);
2403 extern bfd_cleanup bfd_elf32_object_p
2405 extern bfd_cleanup bfd_elf32_core_file_p
2407 extern char *bfd_elf32_core_file_failing_command
2409 extern int bfd_elf32_core_file_failing_signal
2411 extern bfd_boolean bfd_elf32_core_file_matches_executable_p
2413 extern int bfd_elf32_core_file_pid
2415 extern bfd_boolean _bfd_elf32_core_find_build_id
2418 extern bfd_boolean bfd_elf32_swap_symbol_in
2419 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2420 extern void bfd_elf32_swap_symbol_out
2421 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2422 extern void bfd_elf32_swap_reloc_in
2423 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2424 extern void bfd_elf32_swap_reloc_out
2425 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2426 extern void bfd_elf32_swap_reloca_in
2427 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2428 extern void bfd_elf32_swap_reloca_out
2429 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2430 extern void bfd_elf32_swap_phdr_in
2431 (bfd
*, const Elf32_External_Phdr
*, Elf_Internal_Phdr
*);
2432 extern void bfd_elf32_swap_phdr_out
2433 (bfd
*, const Elf_Internal_Phdr
*, Elf32_External_Phdr
*);
2434 extern void bfd_elf32_swap_dyn_in
2435 (bfd
*, const void *, Elf_Internal_Dyn
*);
2436 extern void bfd_elf32_swap_dyn_out
2437 (bfd
*, const Elf_Internal_Dyn
*, void *);
2438 extern long bfd_elf32_slurp_symbol_table
2439 (bfd
*, asymbol
**, bfd_boolean
);
2440 extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
2442 extern int bfd_elf32_write_out_phdrs
2443 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2444 extern bfd_boolean bfd_elf32_checksum_contents
2445 (bfd
* , void (*) (const void *, size_t, void *), void *);
2446 extern void bfd_elf32_write_relocs
2447 (bfd
*, asection
*, void *);
2448 extern bfd_boolean bfd_elf32_slurp_reloc_table
2449 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2451 extern bfd_cleanup bfd_elf64_object_p
2453 extern bfd_cleanup bfd_elf64_core_file_p
2455 extern char *bfd_elf64_core_file_failing_command
2457 extern int bfd_elf64_core_file_failing_signal
2459 extern bfd_boolean bfd_elf64_core_file_matches_executable_p
2461 extern int bfd_elf64_core_file_pid
2463 extern bfd_boolean _bfd_elf64_core_find_build_id
2466 extern bfd_boolean bfd_elf64_swap_symbol_in
2467 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2468 extern void bfd_elf64_swap_symbol_out
2469 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2470 extern void bfd_elf64_swap_reloc_in
2471 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2472 extern void bfd_elf64_swap_reloc_out
2473 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2474 extern void bfd_elf64_swap_reloca_in
2475 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2476 extern void bfd_elf64_swap_reloca_out
2477 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2478 extern void bfd_elf64_swap_phdr_in
2479 (bfd
*, const Elf64_External_Phdr
*, Elf_Internal_Phdr
*);
2480 extern void bfd_elf64_swap_phdr_out
2481 (bfd
*, const Elf_Internal_Phdr
*, Elf64_External_Phdr
*);
2482 extern void bfd_elf64_swap_dyn_in
2483 (bfd
*, const void *, Elf_Internal_Dyn
*);
2484 extern void bfd_elf64_swap_dyn_out
2485 (bfd
*, const Elf_Internal_Dyn
*, void *);
2486 extern long bfd_elf64_slurp_symbol_table
2487 (bfd
*, asymbol
**, bfd_boolean
);
2488 extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
2490 extern int bfd_elf64_write_out_phdrs
2491 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2492 extern bfd_boolean bfd_elf64_checksum_contents
2493 (bfd
* , void (*) (const void *, size_t, void *), void *);
2494 extern void bfd_elf64_write_relocs
2495 (bfd
*, asection
*, void *);
2496 extern bfd_boolean bfd_elf64_slurp_reloc_table
2497 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2499 extern bfd_boolean _bfd_elf_default_relocs_compatible
2500 (const bfd_target
*, const bfd_target
*);
2502 extern bfd_boolean _bfd_elf_relocs_compatible
2503 (const bfd_target
*, const bfd_target
*);
2504 extern bfd_boolean _bfd_elf_notice_as_needed
2505 (bfd
*, struct bfd_link_info
*, enum notice_asneeded_action
);
2507 extern struct elf_link_hash_entry
*_bfd_elf_archive_symbol_lookup
2508 (bfd
*, struct bfd_link_info
*, const char *);
2509 extern bfd_boolean bfd_elf_link_add_symbols
2510 (bfd
*, struct bfd_link_info
*);
2511 extern bfd_boolean _bfd_elf_add_dynamic_entry
2512 (struct bfd_link_info
*, bfd_vma
, bfd_vma
);
2513 extern int bfd_elf_add_dt_needed_tag
2514 (bfd
*, struct bfd_link_info
*);
2515 extern bfd_boolean _bfd_elf_link_check_relocs
2516 (bfd
*, struct bfd_link_info
*);
2518 extern bfd_boolean bfd_elf_link_record_dynamic_symbol
2519 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2521 extern int bfd_elf_link_record_local_dynamic_symbol
2522 (struct bfd_link_info
*, bfd
*, long);
2524 extern bfd_boolean _bfd_elf_close_and_cleanup
2527 extern bfd_boolean _bfd_elf_common_definition
2528 (Elf_Internal_Sym
*);
2530 extern unsigned int _bfd_elf_common_section_index
2533 extern asection
*_bfd_elf_common_section
2536 extern bfd_vma _bfd_elf_default_got_elt_size
2537 (bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd
*,
2540 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
2541 (bfd
*, arelent
*, struct bfd_symbol
*, void *,
2542 asection
*, bfd
*, char **);
2544 extern bfd_boolean bfd_elf_final_link
2545 (bfd
*, struct bfd_link_info
*);
2547 extern void _bfd_elf_gc_keep
2548 (struct bfd_link_info
*info
);
2550 extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
2551 (struct elf_link_hash_entry
*h
, void *inf
);
2553 extern bfd_boolean bfd_elf_gc_sections
2554 (bfd
*, struct bfd_link_info
*);
2556 extern bfd_boolean bfd_elf_gc_record_vtinherit
2557 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2559 extern bfd_boolean bfd_elf_gc_record_vtentry
2560 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2562 extern asection
*_bfd_elf_gc_mark_hook
2563 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
2564 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
2566 extern asection
*_bfd_elf_gc_mark_rsec
2567 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2568 struct elf_reloc_cookie
*, bfd_boolean
*);
2570 extern bfd_boolean _bfd_elf_gc_mark_reloc
2571 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2572 struct elf_reloc_cookie
*);
2574 extern bfd_boolean _bfd_elf_gc_mark_fdes
2575 (struct bfd_link_info
*, asection
*, asection
*, elf_gc_mark_hook_fn
,
2576 struct elf_reloc_cookie
*);
2578 extern bfd_boolean _bfd_elf_gc_mark
2579 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
);
2581 extern bfd_boolean _bfd_elf_gc_mark_extra_sections
2582 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
2584 extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
2585 (bfd
*, struct bfd_link_info
*);
2587 extern bfd_boolean bfd_elf_gc_common_final_link
2588 (bfd
*, struct bfd_link_info
*);
2590 extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
2593 extern struct elf_segment_map
* _bfd_elf_make_dynamic_segment
2594 (bfd
*, asection
*);
2596 extern bfd_boolean _bfd_elf_map_sections_to_segments
2597 (bfd
*, struct bfd_link_info
*);
2599 extern bfd_boolean
_bfd_elf_is_function_type (unsigned int);
2601 extern bfd_size_type
_bfd_elf_maybe_function_sym (const asymbol
*, asection
*,
2604 extern asection
*_bfd_elf_plt_get_reloc_section (bfd
*, const char *);
2606 extern int bfd_elf_get_default_section_type (flagword
);
2608 extern bfd_boolean bfd_elf_lookup_section_flags
2609 (struct bfd_link_info
*, struct flag_info
*, asection
*);
2611 extern Elf_Internal_Phdr
* _bfd_elf_find_segment_containing_section
2612 (bfd
* abfd
, asection
* section
);
2614 /* PowerPC @tls opcode transform/validate. */
2615 extern unsigned int _bfd_elf_ppc_at_tls_transform
2616 (unsigned int, unsigned int);
2617 /* PowerPC @tprel opcode transform/validate. */
2618 extern unsigned int _bfd_elf_ppc_at_tprel_transform
2619 (unsigned int, unsigned int);
2620 /* PowerPC elf_object_p tweak. */
2621 extern bfd_boolean
_bfd_elf_ppc_set_arch (bfd
*);
2622 /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */
2623 extern bfd_boolean _bfd_elf_ppc_merge_fp_attributes
2624 (bfd
*, struct bfd_link_info
*);
2626 /* Return an upper bound on the number of bytes required to store a
2627 copy of ABFD's program header table entries. Return -1 if an error
2628 occurs; bfd_get_error will return an appropriate code. */
2629 extern long bfd_get_elf_phdr_upper_bound
2632 /* Copy ABFD's program header table entries to *PHDRS. The entries
2633 will be stored as an array of Elf_Internal_Phdr structures, as
2634 defined in include/elf/internal.h. To find out how large the
2635 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
2637 Return the number of program header table entries read, or -1 if an
2638 error occurs; bfd_get_error will return an appropriate code. */
2639 extern int bfd_get_elf_phdrs
2640 (bfd
*abfd
, void *phdrs
);
2642 /* Exported interface for writing elf corefile notes. */
2643 extern char *elfcore_write_note
2644 (bfd
*, char *, int *, const char *, int, const void *, int);
2645 extern char *elfcore_write_prpsinfo
2646 (bfd
*, char *, int *, const char *, const char *);
2647 extern char *elfcore_write_prstatus
2648 (bfd
*, char *, int *, long, int, const void *);
2649 extern char * elfcore_write_pstatus
2650 (bfd
*, char *, int *, long, int, const void *);
2651 extern char *elfcore_write_prfpreg
2652 (bfd
*, char *, int *, const void *, int);
2653 extern char *elfcore_write_prxfpreg
2654 (bfd
*, char *, int *, const void *, int);
2655 extern char *elfcore_write_xstatereg
2656 (bfd
*, char *, int *, const void *, int);
2657 extern char *elfcore_write_ppc_vmx
2658 (bfd
*, char *, int *, const void *, int);
2659 extern char *elfcore_write_ppc_vsx
2660 (bfd
*, char *, int *, const void *, int);
2661 extern char *elfcore_write_ppc_tar
2662 (bfd
*, char *, int *, const void *, int);
2663 extern char *elfcore_write_ppc_ppr
2664 (bfd
*, char *, int *, const void *, int);
2665 extern char *elfcore_write_ppc_dscr
2666 (bfd
*, char *, int *, const void *, int);
2667 extern char *elfcore_write_ppc_ebb
2668 (bfd
*, char *, int *, const void *, int);
2669 extern char *elfcore_write_ppc_pmu
2670 (bfd
*, char *, int *, const void *, int);
2671 extern char *elfcore_write_ppc_tm_cgpr
2672 (bfd
*, char *, int *, const void *, int);
2673 extern char *elfcore_write_ppc_tm_cfpr
2674 (bfd
*, char *, int *, const void *, int);
2675 extern char *elfcore_write_ppc_tm_cvmx
2676 (bfd
*, char *, int *, const void *, int);
2677 extern char *elfcore_write_ppc_tm_cvsx
2678 (bfd
*, char *, int *, const void *, int);
2679 extern char *elfcore_write_ppc_tm_spr
2680 (bfd
*, char *, int *, const void *, int);
2681 extern char *elfcore_write_ppc_tm_ctar
2682 (bfd
*, char *, int *, const void *, int);
2683 extern char *elfcore_write_ppc_tm_cppr
2684 (bfd
*, char *, int *, const void *, int);
2685 extern char *elfcore_write_ppc_tm_cdscr
2686 (bfd
*, char *, int *, const void *, int);
2687 extern char *elfcore_write_s390_timer
2688 (bfd
*, char *, int *, const void *, int);
2689 extern char *elfcore_write_s390_todcmp
2690 (bfd
*, char *, int *, const void *, int);
2691 extern char *elfcore_write_s390_todpreg
2692 (bfd
*, char *, int *, const void *, int);
2693 extern char *elfcore_write_s390_ctrs
2694 (bfd
*, char *, int *, const void *, int);
2695 extern char *elfcore_write_s390_prefix
2696 (bfd
*, char *, int *, const void *, int);
2697 extern char *elfcore_write_s390_last_break
2698 (bfd
*, char *, int *, const void *, int);
2699 extern char *elfcore_write_s390_system_call
2700 (bfd
*, char *, int *, const void *, int);
2701 extern char *elfcore_write_s390_tdb
2702 (bfd
*, char *, int *, const void *, int);
2703 extern char *elfcore_write_s390_vxrs_low
2704 (bfd
*, char *, int *, const void *, int);
2705 extern char *elfcore_write_s390_vxrs_high
2706 (bfd
*, char *, int *, const void *, int);
2707 extern char *elfcore_write_s390_gs_cb
2708 (bfd
*, char *, int *, const void *, int);
2709 extern char *elfcore_write_s390_gs_bc
2710 (bfd
*, char *, int *, const void *, int);
2711 extern char *elfcore_write_arm_vfp
2712 (bfd
*, char *, int *, const void *, int);
2713 extern char *elfcore_write_aarch_tls
2714 (bfd
*, char *, int *, const void *, int);
2715 extern char *elfcore_write_aarch_hw_break
2716 (bfd
*, char *, int *, const void *, int);
2717 extern char *elfcore_write_aarch_hw_watch
2718 (bfd
*, char *, int *, const void *, int);
2719 extern char *elfcore_write_aarch_sve
2720 (bfd
*, char *, int *, const void *, int);
2721 extern char *elfcore_write_aarch_pauth
2722 (bfd
*, char *, int *, const void *, int);
2723 extern char *elfcore_write_lwpstatus
2724 (bfd
*, char *, int *, long, int, const void *);
2725 extern char *elfcore_write_register_note
2726 (bfd
*, char *, int *, const char *, const void *, int);
2728 /* Internal structure which holds information to be included in the
2729 PRPSINFO section of Linux core files.
2731 This is an "internal" structure in the sense that it should be used
2732 to pass information to BFD (via the `elfcore_write_linux_prpsinfo'
2733 function), so things like endianess shouldn't be an issue. This
2734 structure will eventually be converted in one of the
2735 `elf_external_linux_*' structures and written out to an output bfd
2736 by one of the functions declared below. */
2738 struct elf_internal_linux_prpsinfo
2740 char pr_state
; /* Numeric process state. */
2741 char pr_sname
; /* Char for pr_state. */
2742 char pr_zomb
; /* Zombie. */
2743 char pr_nice
; /* Nice val. */
2744 unsigned long pr_flag
; /* Flags. */
2745 unsigned int pr_uid
;
2746 unsigned int pr_gid
;
2747 int pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
2748 char pr_fname
[16 + 1]; /* Filename of executable. */
2749 char pr_psargs
[80 + 1]; /* Initial part of arg list. */
2752 /* Linux/most 32-bit archs. */
2753 extern char *elfcore_write_linux_prpsinfo32
2754 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2756 /* Linux/most 64-bit archs. */
2757 extern char *elfcore_write_linux_prpsinfo64
2758 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2760 extern bfd
*_bfd_elf32_bfd_from_remote_memory
2761 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2762 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2763 extern bfd
*_bfd_elf64_bfd_from_remote_memory
2764 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2765 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2767 extern bfd_vma
bfd_elf_obj_attr_size (bfd
*);
2768 extern void bfd_elf_set_obj_attr_contents (bfd
*, bfd_byte
*, bfd_vma
);
2769 extern int bfd_elf_get_obj_attr_int (bfd
*, int, unsigned int);
2770 extern void bfd_elf_add_obj_attr_int (bfd
*, int, unsigned int, unsigned int);
2771 #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
2772 bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2773 extern void bfd_elf_add_obj_attr_string (bfd
*, int, unsigned int, const char *);
2774 #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
2775 bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2776 extern void bfd_elf_add_obj_attr_int_string (bfd
*, int, unsigned int,
2777 unsigned int, const char *);
2778 #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
2779 bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
2782 extern char *_bfd_elf_attr_strdup (bfd
*, const char *);
2783 extern void _bfd_elf_copy_obj_attributes (bfd
*, bfd
*);
2784 extern int _bfd_elf_obj_attrs_arg_type (bfd
*, int, unsigned int);
2785 extern void _bfd_elf_parse_attributes (bfd
*, Elf_Internal_Shdr
*);
2786 extern bfd_boolean _bfd_elf_merge_object_attributes
2787 (bfd
*, struct bfd_link_info
*);
2788 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_low (bfd
*, bfd
*, int);
2789 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_list (bfd
*, bfd
*);
2790 extern Elf_Internal_Shdr
*_bfd_elf_single_rel_hdr (asection
*sec
);
2791 extern bfd_boolean
elf_read_notes (bfd
*, file_ptr
, bfd_size_type
, size_t);
2793 extern bfd_boolean _bfd_elf_parse_gnu_properties
2794 (bfd
*, Elf_Internal_Note
*);
2795 extern elf_property
* _bfd_elf_get_property
2796 (bfd
*, unsigned int, unsigned int);
2797 extern bfd
*_bfd_elf_link_setup_gnu_properties
2798 (struct bfd_link_info
*);
2799 extern bfd_size_type _bfd_elf_convert_gnu_property_size
2801 extern bfd_boolean _bfd_elf_convert_gnu_properties
2802 (bfd
*, asection
*, bfd
*, bfd_byte
**, bfd_size_type
*);
2804 /* The linker may need to keep track of the number of relocs that it
2805 decides to copy as dynamic relocs in check_relocs for each symbol.
2806 This is so that it can later discard them if they are found to be
2807 unnecessary. We can store the information in a field extending the
2808 regular ELF linker hash table. */
2810 struct elf_dyn_relocs
2812 struct elf_dyn_relocs
*next
;
2814 /* The input section of the reloc. */
2817 /* Total number of relocs copied for the input section. */
2818 bfd_size_type count
;
2820 /* Number of pc-relative relocs copied for the input section. */
2821 bfd_size_type pc_count
;
2824 extern bfd_boolean _bfd_elf_create_ifunc_sections
2825 (bfd
*, struct bfd_link_info
*);
2826 extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
2827 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2828 struct elf_dyn_relocs
**, bfd_boolean
*, unsigned int,
2829 unsigned int, unsigned int, bfd_boolean
);
2831 extern void elf_append_rela (bfd
*, asection
*, Elf_Internal_Rela
*);
2832 extern void elf_append_rel (bfd
*, asection
*, Elf_Internal_Rela
*);
2834 extern bfd_vma
elf64_r_info (bfd_vma
, bfd_vma
);
2835 extern bfd_vma
elf64_r_sym (bfd_vma
);
2836 extern bfd_vma
elf32_r_info (bfd_vma
, bfd_vma
);
2837 extern bfd_vma
elf32_r_sym (bfd_vma
);
2839 extern bfd_boolean
is_debuginfo_file (bfd
*);
2841 /* Large common section. */
2842 extern asection _bfd_elf_large_com_section
;
2844 /* Hash for local symbol with the first section id, ID, in the input
2845 file and the local symbol index, SYM. */
2846 #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
2847 (((((ID) & 0xffU) << 24) | (((ID) & 0xff00) << 8)) \
2848 ^ (SYM) ^ (((ID) & 0xffff0000U) >> 16))
2850 /* This is the condition under which finish_dynamic_symbol will be called.
2851 If our finish_dynamic_symbol isn't called, we'll need to do something
2852 about initializing any .plt and .got entries in relocate_section. */
2853 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
2855 && ((SHARED) || !(H)->forced_local) \
2856 && ((H)->dynindx != -1 || (H)->forced_local))
2858 /* This macro is to avoid lots of duplicated code in the body
2859 of xxx_relocate_section() in the various elfxx-xxxx.c files. */
2860 #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \
2861 r_symndx, symtab_hdr, sym_hashes, \
2862 h, sec, relocation, \
2863 unresolved_reloc, warned, ignored) \
2866 /* It seems this can happen with erroneous or unsupported \
2867 input (mixing a.out and elf in an archive, for example.) */ \
2868 if (sym_hashes == NULL) \
2871 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \
2873 if (info->wrap_hash != NULL \
2874 && (input_section->flags & SEC_DEBUGGING) != 0) \
2875 h = ((struct elf_link_hash_entry *) \
2876 unwrap_hash_lookup (info, input_bfd, &h->root)); \
2878 while (h->root.type == bfd_link_hash_indirect \
2879 || h->root.type == bfd_link_hash_warning) \
2880 h = (struct elf_link_hash_entry *) h->root.u.i.link; \
2884 unresolved_reloc = FALSE; \
2886 if (h->root.type == bfd_link_hash_defined \
2887 || h->root.type == bfd_link_hash_defweak) \
2889 sec = h->root.u.def.section; \
2891 || sec->output_section == NULL) \
2892 /* Set a flag that will be cleared later if we find a \
2893 relocation value for this symbol. output_section \
2894 is typically NULL for symbols satisfied by a shared \
2896 unresolved_reloc = TRUE; \
2898 relocation = (h->root.u.def.value \
2899 + sec->output_section->vma \
2900 + sec->output_offset); \
2902 else if (h->root.type == bfd_link_hash_undefweak) \
2904 else if (info->unresolved_syms_in_objects == RM_IGNORE \
2905 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \
2907 else if (!bfd_link_relocatable (info)) \
2910 err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \
2911 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \
2912 (*info->callbacks->undefined_symbol) (info, \
2913 h->root.root.string, \
2916 rel->r_offset, err); \
2919 (void) unresolved_reloc; \
2925 /* This macro is to avoid lots of duplicated code in the body of the
2926 loop over relocations in xxx_relocate_section() in the various
2929 Handle relocations against symbols from removed linkonce sections,
2930 or sections discarded by a linker script. When doing a relocatable
2931 link, we remove such relocations. Otherwise, we just want the
2932 section contents zeroed and avoid any special processing. */
2933 #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
2934 rel, count, relend, \
2935 howto, index, contents) \
2938 _bfd_clear_contents (howto, input_bfd, input_section, \
2939 contents, rel[index].r_offset); \
2941 if (bfd_link_relocatable (info) \
2942 && (input_section->flags & SEC_DEBUGGING)) \
2944 /* Only remove relocations in debug sections since other \
2945 sections may require relocations. */ \
2946 Elf_Internal_Shdr *rel_hdr; \
2948 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
2950 /* Avoid empty output section. */ \
2951 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
2953 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2954 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
2955 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2957 memmove (rel, rel + count, \
2958 (relend - rel - count) * sizeof (*rel)); \
2960 input_section->reloc_count -= count; \
2967 for (i_ = 0; i_ < count; i_++) \
2969 rel[i_].r_info = 0; \
2970 rel[i_].r_addend = 0; \
2976 /* Will a symbol be bound to the definition within the shared
2977 library, if any. A unique symbol can never be bound locally. */
2978 #define SYMBOLIC_BIND(INFO, H) \
2979 (!(H)->unique_global \
2980 && ((INFO)->symbolic \
2981 || (H)->start_stop \
2982 || ((INFO)->dynamic && !(H)->dynamic)))
2984 /* Determine if a section contains CTF data, using its name. */
2985 static inline bfd_boolean
2986 bfd_section_is_ctf (const asection
*sec
)
2988 const char *name
= bfd_section_name (sec
);
2989 return strncmp (name
, ".ctf", 4) == 0 && (name
[4] == 0 || name
[4] == '.');
2995 #endif /* _LIBELF_H_ */