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
; /* Bytes. */
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 /* The STRIP_ZERO_SIZED_DYNAMIC_SECTIONS function is called by the
1087 ELF backend linker to strip zero-sized dynamic sections after
1088 the section sizes have been set. */
1089 bfd_boolean (*elf_backend_strip_zero_sized_dynamic_sections
)
1090 (struct bfd_link_info
*info
);
1092 /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections
1093 we keep to use as a base for relocs and symbols. */
1094 void (*elf_backend_init_index_section
)
1095 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1097 /* The RELOCATE_SECTION function is called by the ELF backend linker
1098 to handle the relocations for a section.
1100 The relocs are always passed as Rela structures; if the section
1101 actually uses Rel structures, the r_addend field will always be
1104 This function is responsible for adjust the section contents as
1105 necessary, and (if using Rela relocs and generating a
1106 relocatable output file) adjusting the reloc addend as
1109 This function does not have to worry about setting the reloc
1110 address or the reloc symbol index.
1112 LOCAL_SYMS is a pointer to the swapped in local symbols.
1114 LOCAL_SECTIONS is an array giving the section in the input file
1115 corresponding to the st_shndx field of each local symbol.
1117 The global hash table entry for the global symbols can be found
1118 via elf_sym_hashes (input_bfd).
1120 When generating relocatable output, this function must handle
1121 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1122 going to be the section symbol corresponding to the output
1123 section, which means that the addend must be adjusted
1126 Returns FALSE on error, TRUE on success, 2 if successful and
1127 relocations should be written for this section. */
1128 int (*elf_backend_relocate_section
)
1129 (bfd
*output_bfd
, struct bfd_link_info
*info
, bfd
*input_bfd
,
1130 asection
*input_section
, bfd_byte
*contents
, Elf_Internal_Rela
*relocs
,
1131 Elf_Internal_Sym
*local_syms
, asection
**local_sections
);
1133 /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
1134 linker just before it writes a symbol out to the .dynsym section.
1135 The processor backend may make any required adjustment to the
1136 symbol. It may also take the opportunity to set contents of the
1137 dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
1138 all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
1139 on those symbols which are defined by a dynamic object. */
1140 bfd_boolean (*elf_backend_finish_dynamic_symbol
)
1141 (bfd
*output_bfd
, struct bfd_link_info
*info
,
1142 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*sym
);
1144 /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
1145 linker just before it writes all the dynamic sections out to the
1146 output file. The FINISH_DYNAMIC_SYMBOL will have been called on
1147 all dynamic symbols. */
1148 bfd_boolean (*elf_backend_finish_dynamic_sections
)
1149 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1151 /* A function to do any beginning processing needed for the ELF file
1152 before building the ELF headers and computing file positions. */
1153 void (*elf_backend_begin_write_processing
)
1154 (bfd
*, struct bfd_link_info
*);
1156 /* A function to do any final processing needed for the ELF file
1157 before writing it out. */
1158 bfd_boolean (*elf_backend_final_write_processing
)
1161 /* This function is called by get_program_header_size. It should
1162 return the number of additional program segments which this BFD
1163 will need. It should return -1 on error. */
1164 int (*elf_backend_additional_program_headers
)
1165 (bfd
*, struct bfd_link_info
*);
1167 /* This function is called to modify an existing segment map in a
1168 backend specific fashion. */
1169 bfd_boolean (*elf_backend_modify_segment_map
)
1170 (bfd
*, struct bfd_link_info
*);
1172 /* This function is called to modify program headers just before
1173 they are written. */
1174 bfd_boolean (*elf_backend_modify_headers
)
1175 (bfd
*, struct bfd_link_info
*);
1177 /* This function is called to see if the PHDR header should be
1178 checked for validity. */
1179 bfd_boolean (*elf_backend_allow_non_load_phdr
)
1180 (bfd
*, const Elf_Internal_Phdr
*, unsigned);
1182 /* This function is called before section garbage collection to
1183 mark entry symbol sections. */
1185 (struct bfd_link_info
*);
1187 /* This function is called during section garbage collection to
1188 mark sections that define global symbols. */
1189 bfd_boolean (*gc_mark_dynamic_ref
)
1190 (struct elf_link_hash_entry
*, void *);
1192 /* This function is called during section gc to discover the section a
1193 particular relocation refers to. */
1194 elf_gc_mark_hook_fn gc_mark_hook
;
1196 /* This function, if defined, is called after the first gc marking pass
1197 to allow the backend to mark additional sections. */
1198 bfd_boolean (*gc_mark_extra_sections
)
1199 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
1201 /* This function is called to initialise ELF file header info.
1202 Customised versions can modify things like the OS and ABI version. */
1203 bfd_boolean (*elf_backend_init_file_header
)
1204 (bfd
*, struct bfd_link_info
*);
1206 /* This function, if defined, prints a symbol to file and returns the
1207 name of the symbol to be printed. It should return NULL to fall
1208 back to default symbol printing. */
1209 const char *(*elf_backend_print_symbol_all
)
1210 (bfd
*, void *, asymbol
*);
1212 /* This function, if defined, is called after all local symbols and
1213 global symbols converted to locals are emitted into the symtab
1214 section. It allows the backend to emit special local symbols
1215 not handled in the hash table. */
1216 bfd_boolean (*elf_backend_output_arch_local_syms
)
1217 (bfd
*, struct bfd_link_info
*, void *,
1218 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1219 struct elf_link_hash_entry
*));
1221 /* This function, if defined, is called after all symbols are emitted
1222 into the symtab section. It allows the backend to emit special
1223 global symbols not handled in the hash table. */
1224 bfd_boolean (*elf_backend_output_arch_syms
)
1225 (bfd
*, struct bfd_link_info
*, void *,
1226 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1227 struct elf_link_hash_entry
*));
1229 /* Filter what symbols of the output file to include in the import
1230 library if one is created. */
1231 unsigned int (*elf_backend_filter_implib_symbols
)
1232 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
1234 /* Copy any information related to dynamic linking from a pre-existing
1235 symbol to a newly created symbol. Also called to copy flags and
1236 other back-end info to a weakdef, in which case the symbol is not
1237 newly created and plt/got refcounts and dynamic indices should not
1239 void (*elf_backend_copy_indirect_symbol
)
1240 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
1241 struct elf_link_hash_entry
*);
1243 /* Modify any information related to dynamic linking such that the
1244 symbol is not exported. */
1245 void (*elf_backend_hide_symbol
)
1246 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
1248 /* A function to do additional symbol fixup, called by
1249 _bfd_elf_fix_symbol_flags. */
1250 bfd_boolean (*elf_backend_fixup_symbol
)
1251 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
1253 /* Merge the backend specific symbol attribute. */
1254 void (*elf_backend_merge_symbol_attribute
)
1255 (struct elf_link_hash_entry
*, const Elf_Internal_Sym
*, bfd_boolean
,
1258 /* This function, if defined, will return a string containing the
1259 name of a target-specific dynamic tag. */
1260 char *(*elf_backend_get_target_dtag
)
1263 /* Decide whether an undefined symbol is special and can be ignored.
1264 This is the case for OPTIONAL symbols on IRIX. */
1265 bfd_boolean (*elf_backend_ignore_undef_symbol
)
1266 (struct elf_link_hash_entry
*);
1268 /* Emit relocations. Overrides default routine for emitting relocs,
1269 except during a relocatable link, or if all relocs are being emitted. */
1270 bfd_boolean (*elf_backend_emit_relocs
)
1271 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
1272 struct elf_link_hash_entry
**);
1274 /* Update relocations. It is allowed to change the number and the order.
1275 In such a case hashes should be invalidated. */
1276 void (*elf_backend_update_relocs
)
1277 (asection
*, struct bfd_elf_section_reloc_data
*);
1279 /* Count relocations. Not called for relocatable links
1280 or if all relocs are being preserved in the output. */
1281 unsigned int (*elf_backend_count_relocs
)
1282 (struct bfd_link_info
*, asection
*);
1284 /* Count additionals relocations. Called for relocatable links if
1285 additional relocations needs to be created. */
1286 unsigned int (*elf_backend_count_additional_relocs
)
1289 /* Say whether to sort relocs output by ld -r and ld --emit-relocs,
1290 by r_offset. If NULL, default to true. */
1291 bfd_boolean (*sort_relocs_p
)
1294 /* This function, if defined, is called when an NT_PRSTATUS note is found
1296 bfd_boolean (*elf_backend_grok_prstatus
)
1297 (bfd
*, Elf_Internal_Note
*);
1299 /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
1300 note is found in a core file. */
1301 bfd_boolean (*elf_backend_grok_psinfo
)
1302 (bfd
*, Elf_Internal_Note
*);
1304 /* This function, if defined, is called when a "FreeBSD" NT_PRSTATUS
1305 note is found in a core file. */
1306 bfd_boolean (*elf_backend_grok_freebsd_prstatus
)
1307 (bfd
*, Elf_Internal_Note
*);
1309 /* This function, if defined, is called to write a note to a corefile. */
1310 char *(*elf_backend_write_core_note
)
1311 (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...);
1313 /* This function, if defined, is called to convert target-specific
1314 section flag names into hex values. */
1315 flagword (*elf_backend_lookup_section_flags_hook
)
1318 /* This function returns class of a reloc type. */
1319 enum elf_reloc_type_class (*elf_backend_reloc_type_class
)
1320 (const struct bfd_link_info
*, const asection
*, const Elf_Internal_Rela
*);
1322 /* This function, if defined, removes information about discarded functions
1323 from other sections which mention them. */
1324 bfd_boolean (*elf_backend_discard_info
)
1325 (bfd
*, struct elf_reloc_cookie
*, struct bfd_link_info
*);
1327 /* This function, if defined, signals that the function above has removed
1328 the discarded relocations for this section. */
1329 bfd_boolean (*elf_backend_ignore_discarded_relocs
)
1332 /* What to do when ld finds relocations against symbols defined in
1333 discarded sections. */
1334 unsigned int (*action_discarded
)
1337 /* This function returns the width of FDE pointers in bytes, or 0 if
1338 that can't be determined for some reason. The default definition
1339 goes by the bfd's EI_CLASS. */
1340 unsigned int (*elf_backend_eh_frame_address_size
)
1341 (bfd
*, const asection
*);
1343 /* These functions tell elf-eh-frame whether to attempt to turn
1344 absolute or lsda encodings into pc-relative ones. The default
1345 definition enables these transformations. */
1346 bfd_boolean (*elf_backend_can_make_relative_eh_frame
)
1347 (bfd
*, struct bfd_link_info
*, asection
*);
1348 bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame
)
1349 (bfd
*, struct bfd_link_info
*, asection
*);
1351 /* This function returns an encoding after computing the encoded
1352 value (and storing it in ENCODED) for the given OFFSET into OSEC,
1353 to be stored in at LOC_OFFSET into the LOC_SEC input section.
1354 The default definition chooses a 32-bit PC-relative encoding. */
1355 bfd_byte (*elf_backend_encode_eh_address
)
1356 (bfd
*abfd
, struct bfd_link_info
*info
,
1357 asection
*osec
, bfd_vma offset
,
1358 asection
*loc_sec
, bfd_vma loc_offset
,
1361 /* This function, if defined, may write out the given section.
1362 Returns TRUE if it did so and FALSE if the caller should. */
1363 bfd_boolean (*elf_backend_write_section
)
1364 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
1366 /* The level of IRIX compatibility we're striving for.
1367 MIPS ELF specific function. */
1368 irix_compat_t (*elf_backend_mips_irix_compat
)
1371 reloc_howto_type
*(*elf_backend_mips_rtype_to_howto
)
1372 (bfd
*, unsigned int, bfd_boolean
);
1374 /* The swapping table to use when dealing with ECOFF information.
1375 Used for the MIPS ELF .mdebug section. */
1376 const struct ecoff_debug_swap
*elf_backend_ecoff_debug_swap
;
1378 /* This function implements `bfd_elf_bfd_from_remote_memory';
1379 see elf.c, elfcode.h. */
1380 bfd
*(*elf_backend_bfd_from_remote_memory
)
1381 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
1382 int (*target_read_memory
) (bfd_vma vma
, bfd_byte
*myaddr
,
1383 bfd_size_type len
));
1385 bfd_boolean (*elf_backend_core_find_build_id
) (bfd
*, bfd_vma
);
1387 /* This function is used by `_bfd_elf_get_synthetic_symtab';
1389 bfd_vma (*plt_sym_val
) (bfd_vma
, const asection
*, const arelent
*);
1391 /* Is symbol defined in common section? */
1392 bfd_boolean (*common_definition
) (Elf_Internal_Sym
*);
1394 /* Return a common section index for section. */
1395 unsigned int (*common_section_index
) (asection
*);
1397 /* Return a common section for section. */
1398 asection
*(*common_section
) (asection
*);
1400 /* Return TRUE if we can merge 2 definitions. */
1401 bfd_boolean (*merge_symbol
) (struct elf_link_hash_entry
*,
1402 const Elf_Internal_Sym
*, asection
**,
1403 bfd_boolean
, bfd_boolean
,
1404 bfd
*, const asection
*);
1406 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
1407 bfd_boolean (*elf_hash_symbol
) (struct elf_link_hash_entry
*);
1409 /* If non-NULL, called to register the location of XLAT_LOC within
1410 .MIPS.xhash at which real final dynindx for H will be written.
1411 If XLAT_LOC is zero, the symbol is not included in
1412 .MIPS.xhash and no dynindx will be written. */
1413 void (*record_xhash_symbol
)
1414 (struct elf_link_hash_entry
*h
, bfd_vma xlat_loc
);
1416 /* Return TRUE if type is a function symbol type. */
1417 bfd_boolean (*is_function_type
) (unsigned int type
);
1419 /* If the ELF symbol SYM might be a function in SEC, return the
1420 function size and set *CODE_OFF to the function's entry point,
1421 otherwise return zero. */
1422 bfd_size_type (*maybe_function_sym
) (const asymbol
*sym
, asection
*sec
,
1425 /* Given NAME, the name of a relocation section stripped of its
1426 .rel/.rela prefix, return the section in ABFD to which the
1427 relocations apply. */
1428 asection
*(*get_reloc_section
) (bfd
*abfd
, const char *name
);
1430 /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
1431 has a type >= SHT_LOOS. Returns TRUE if the fields were initialised,
1432 FALSE otherwise. Can be called multiple times for a given section,
1433 until it returns TRUE. Most of the times it is called ISECTION will be
1434 set to an input section that might be associated with the output section.
1435 The last time that it is called, ISECTION will be set to NULL. */
1436 bfd_boolean (*elf_backend_copy_special_section_fields
)
1437 (const bfd
*ibfd
, bfd
*obfd
, const Elf_Internal_Shdr
*isection
,
1438 Elf_Internal_Shdr
*osection
);
1440 /* Used to handle bad SHF_LINK_ORDER input. */
1441 void (*link_order_error_handler
) (const char *, ...);
1443 /* Name of the PLT relocation section. */
1444 const char *relplt_name
;
1446 /* Alternate EM_xxxx machine codes for this backend. */
1447 int elf_machine_alt1
;
1448 int elf_machine_alt2
;
1450 const struct elf_size_info
*s
;
1452 /* An array of target specific special sections. */
1453 const struct bfd_elf_special_section
*special_sections
;
1455 /* The size in bytes of the header for the GOT. This includes the
1456 so-called reserved entries on some systems. */
1457 bfd_vma got_header_size
;
1459 /* The size of the GOT entry for the symbol pointed to by H if non-NULL,
1460 otherwise by the local symbol with index SYMNDX in IBFD. */
1461 bfd_vma (*got_elt_size
) (bfd
*, struct bfd_link_info
*,
1462 struct elf_link_hash_entry
*h
,
1463 bfd
*ibfd
, unsigned long symndx
);
1465 /* The vendor name to use for a processor-standard attributes section. */
1466 const char *obj_attrs_vendor
;
1468 /* The section name to use for a processor-standard attributes section. */
1469 const char *obj_attrs_section
;
1471 /* Return 1, 2 or 3 to indicate what type of arguments a
1472 processor-specific tag takes. */
1473 int (*obj_attrs_arg_type
) (int);
1475 /* The section type to use for an attributes section. */
1476 unsigned int obj_attrs_section_type
;
1478 /* This function determines the order in which any attributes are
1479 written. It must be defined for input in the range
1480 LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range
1481 is used in order to make unity easy). The returned value is the
1482 actual tag number to place in the input position. */
1483 int (*obj_attrs_order
) (int);
1485 /* Handle merging unknown attributes; either warn and return TRUE,
1486 or give an error and return FALSE. */
1487 bfd_boolean (*obj_attrs_handle_unknown
) (bfd
*, int);
1489 /* Parse GNU properties. Return the property kind. If the property
1490 is corrupt, issue an error message and return property_corrupt. */
1491 enum elf_property_kind (*parse_gnu_properties
) (bfd
*, unsigned int,
1495 /* Merge GNU properties. Return TRUE if property is updated. */
1496 bfd_boolean (*merge_gnu_properties
) (struct bfd_link_info
*, bfd
*, bfd
*,
1497 elf_property
*, elf_property
*);
1499 /* Set up GNU properties. */
1500 bfd
*(*setup_gnu_properties
) (struct bfd_link_info
*);
1502 /* Fix up GNU properties. */
1503 void (*fixup_gnu_properties
) (struct bfd_link_info
*,
1504 elf_property_list
**);
1506 /* Encoding used for compact EH tables. */
1507 int (*compact_eh_encoding
) (struct bfd_link_info
*);
1509 /* Opcode representing no unwind. */
1510 int (*cant_unwind_opcode
) (struct bfd_link_info
*);
1512 /* Called when emitting an ELF symbol whoes input version had an
1513 ST_SHNDX field set to a value in the range SHN_LOPROC..SHN_HIOS.
1514 Returns the value to be installed in the ST_SHNDX field of the
1515 emitted symbol. If not defined, the value is left unchanged. */
1516 unsigned int (*symbol_section_index
) (bfd
*, elf_symbol_type
*);
1518 /* Called when a section has extra reloc sections. */
1519 bfd_boolean (*init_secondary_reloc_section
) (bfd
*, Elf_Internal_Shdr
*,
1520 const char *, unsigned int);
1522 /* Called when after loading the normal relocs for a section. */
1523 bfd_boolean (*slurp_secondary_relocs
) (bfd
*, asection
*, asymbol
**);
1525 /* Called after writing the normal relocs for a section. */
1526 bfd_boolean (*write_secondary_relocs
) (bfd
*, asection
*);
1528 /* This is non-zero if static TLS segments require a special alignment. */
1529 unsigned static_tls_alignment
;
1531 /* Alignment for the PT_GNU_STACK segment. */
1532 unsigned stack_align
;
1534 /* Flag bits to assign to a section of type SHT_STRTAB. */
1535 unsigned long elf_strtab_flags
;
1537 /* This is TRUE if the linker should act like collect and gather
1538 global constructors and destructors by name. This is TRUE for
1539 MIPS ELF because the Irix 5 tools can not handle the .init
1541 unsigned collect
: 1;
1543 /* This is TRUE if the linker should ignore changes to the type of a
1544 symbol. This is TRUE for MIPS ELF because some Irix 5 objects
1545 record undefined functions as STT_OBJECT although the definitions
1547 unsigned type_change_ok
: 1;
1549 /* Whether the backend may use REL relocations. (Some backends use
1550 both REL and RELA relocations, and this flag is set for those
1552 unsigned may_use_rel_p
: 1;
1554 /* Whether the backend may use RELA relocations. (Some backends use
1555 both REL and RELA relocations, and this flag is set for those
1557 unsigned may_use_rela_p
: 1;
1559 /* Whether the default relocation type is RELA. If a backend with
1560 this flag set wants REL relocations for a particular section,
1561 it must note that explicitly. Similarly, if this flag is clear,
1562 and the backend wants RELA relocations for a particular
1564 unsigned default_use_rela_p
: 1;
1566 /* True if PLT and copy relocations should be RELA by default. */
1567 unsigned rela_plts_and_copies_p
: 1;
1569 /* Set if RELA relocations for a relocatable link can be handled by
1570 generic code. Backends that set this flag need do nothing in the
1571 backend relocate_section routine for relocatable linking. */
1572 unsigned rela_normal
: 1;
1574 /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT
1576 unsigned dtrel_excludes_plt
: 1;
1578 /* TRUE if addresses "naturally" sign extend. This is used when
1579 swapping in from Elf32 when BFD64. */
1580 unsigned sign_extend_vma
: 1;
1582 unsigned want_got_plt
: 1;
1583 unsigned plt_readonly
: 1;
1584 unsigned want_plt_sym
: 1;
1585 unsigned plt_not_loaded
: 1;
1586 unsigned plt_alignment
: 4;
1587 unsigned can_gc_sections
: 1;
1588 unsigned can_refcount
: 1;
1589 unsigned want_got_sym
: 1;
1590 unsigned want_dynbss
: 1;
1591 unsigned want_dynrelro
: 1;
1593 /* Targets which do not support physical addressing often require
1594 that the p_paddr field in the section header to be set to zero.
1595 This field indicates whether this behavior is required. */
1596 unsigned want_p_paddr_set_to_zero
: 1;
1598 /* Target has broken hardware and/or kernel that requires pages not
1599 to be mapped twice with different permissions. */
1600 unsigned no_page_alias
: 1;
1602 /* True if an object file lacking a .note.GNU-stack section
1603 should be assumed to be requesting exec stack. At least one
1604 other file in the link needs to have a .note.GNU-stack section
1605 for a PT_GNU_STACK segment to be created. */
1606 unsigned default_execstack
: 1;
1608 /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize
1609 in length rather than sec->size in length, if sec->rawsize is
1610 non-zero and smaller than sec->size. */
1611 unsigned caches_rawsize
: 1;
1613 /* Address of protected data defined in the shared library may be
1614 external, i.e., due to copy relocation. */
1615 unsigned extern_protected_data
: 1;
1617 /* True if `_bfd_elf_link_renumber_dynsyms' must be called even for
1619 unsigned always_renumber_dynsyms
: 1;
1621 /* True if the 32-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1622 members use a 16-bit data type. */
1623 unsigned linux_prpsinfo32_ugid16
: 1;
1625 /* True if the 64-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1626 members use a 16-bit data type. */
1627 unsigned linux_prpsinfo64_ugid16
: 1;
1630 /* Information about reloc sections associated with a bfd_elf_section_data
1632 struct bfd_elf_section_reloc_data
1634 /* The ELF header for the reloc section associated with this
1636 Elf_Internal_Shdr
*hdr
;
1637 /* The number of relocations currently assigned to HDR. */
1639 /* The ELF section number of the reloc section. Only used for an
1642 /* Used by the backend linker to store the symbol hash table entries
1643 associated with relocs against global symbols. */
1644 struct elf_link_hash_entry
**hashes
;
1647 /* Information stored for each BFD section in an ELF file. This
1648 structure is allocated by elf_new_section_hook. */
1650 struct bfd_elf_section_data
1652 /* The ELF header for this section. */
1653 Elf_Internal_Shdr this_hdr
;
1655 /* INPUT_SECTION_FLAGS if specified in the linker script. */
1656 struct flag_info
*section_flag_info
;
1658 /* Information about the REL and RELA reloc sections associated
1659 with this section, if any. */
1660 struct bfd_elf_section_reloc_data rel
, rela
;
1662 /* The ELF section number of this section. */
1665 /* Used by the backend linker when generating a shared library to
1666 record the dynamic symbol index for a section symbol
1667 corresponding to this section. A value of 0 means that there is
1668 no dynamic symbol for this section. */
1671 /* A pointer to the linked-to section for SHF_LINK_ORDER. */
1672 asection
*linked_to
;
1674 /* A pointer to the swapped relocs. If the section uses REL relocs,
1675 rather than RELA, all the r_addend fields will be zero. This
1676 pointer may be NULL. It is used by the backend linker. */
1677 Elf_Internal_Rela
*relocs
;
1679 /* A pointer to a linked list tracking dynamic relocs copied for
1683 /* A pointer to the bfd section used for dynamic relocs. */
1687 /* Group name, if this section is a member of a group. */
1690 /* Group signature sym, if this is the SHT_GROUP section. */
1691 struct bfd_symbol
*id
;
1694 /* For a member of a group, points to the SHT_GROUP section.
1695 NULL for the SHT_GROUP section itself and non-group sections. */
1696 asection
*sec_group
;
1698 /* A linked list of member sections in the group. Circular when used by
1699 the linker. For the SHT_GROUP section, points at first member. */
1700 asection
*next_in_group
;
1702 /* The FDEs associated with this section. The u.fde.next_in_section
1703 field acts as a chain pointer. */
1704 struct eh_cie_fde
*fde_list
;
1706 /* Link from a text section to its .eh_frame_entry section. */
1707 asection
*eh_frame_entry
;
1709 /* A pointer used for various section optimizations. */
1713 #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
1714 #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
1715 #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type)
1716 #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
1717 #define elf_section_info(sec) (elf_section_data(sec)->this_hdr.sh_info)
1718 #define elf_group_name(sec) (elf_section_data(sec)->group.name)
1719 #define elf_group_id(sec) (elf_section_data(sec)->group.id)
1720 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
1721 #define elf_fde_list(sec) (elf_section_data(sec)->fde_list)
1722 #define elf_sec_group(sec) (elf_section_data(sec)->sec_group)
1723 #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry)
1725 #define xvec_get_elf_backend_data(xvec) \
1726 ((const struct elf_backend_data *) (xvec)->backend_data)
1728 #define get_elf_backend_data(abfd) \
1729 xvec_get_elf_backend_data ((abfd)->xvec)
1731 /* The least object attributes (within an attributes subsection) known
1732 for any target. Some code assumes that the value 0 is not used and
1733 the field for that attribute can instead be used as a marker to
1734 indicate that attributes have been initialized. */
1735 #define LEAST_KNOWN_OBJ_ATTRIBUTE 2
1737 /* The maximum number of known object attributes for any target. */
1738 #define NUM_KNOWN_OBJ_ATTRIBUTES 71
1740 /* The value of an object attribute. The type indicates whether the attribute
1741 holds and integer, a string, or both. It can also indicate that there can
1742 be no default (i.e. all values must be written to file, even zero), or
1743 that the value is in error and should not be written to file. */
1745 typedef struct obj_attribute
1747 #define ATTR_TYPE_FLAG_INT_VAL (1 << 0)
1748 #define ATTR_TYPE_FLAG_STR_VAL (1 << 1)
1749 #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
1750 #define ATTR_TYPE_FLAG_ERROR (1 << 3)
1752 #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
1753 #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
1754 #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
1755 #define ATTR_TYPE_HAS_ERROR(TYPE) ((TYPE) & ATTR_TYPE_FLAG_ERROR)
1762 typedef struct obj_attribute_list
1764 struct obj_attribute_list
*next
;
1767 } obj_attribute_list
;
1769 /* Object attributes may either be defined by the processor ABI, index
1770 OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
1771 (and possibly also processor-specific), index OBJ_ATTR_GNU. */
1772 #define OBJ_ATTR_PROC 0
1773 #define OBJ_ATTR_GNU 1
1774 #define OBJ_ATTR_FIRST OBJ_ATTR_PROC
1775 #define OBJ_ATTR_LAST OBJ_ATTR_GNU
1777 /* The following object attribute tags are taken as generic, for all
1778 targets and for "gnu" where there is no target standard. */
1785 Tag_compatibility
= 32
1788 /* The following struct stores information about every SystemTap section
1789 found in the object file. */
1792 struct sdt_note
*next
;
1797 /* tdata information grabbed from an elf core file. */
1798 struct core_elf_obj_tdata
1807 /* Extra tdata information held for output ELF BFDs. */
1808 struct output_elf_obj_tdata
1810 struct elf_segment_map
*seg_map
;
1811 struct elf_strtab_hash
*strtab_ptr
;
1813 /* STT_SECTION symbols for each section */
1814 asymbol
**section_syms
;
1816 /* Used to determine if PT_GNU_EH_FRAME segment header should be
1818 asection
*eh_frame_hdr
;
1820 /* NT_GNU_BUILD_ID note type info. */
1823 bfd_boolean (*after_write_object_contents
) (bfd
*);
1828 /* Records the result of `get_program_header_size'. */
1829 bfd_size_type program_header_size
;
1831 /* Used when laying out sections. */
1832 file_ptr next_file_pos
;
1834 int num_section_syms
;
1835 unsigned int shstrtab_section
, strtab_section
;
1837 /* Segment flags for the PT_GNU_STACK segment. */
1838 unsigned int stack_flags
;
1840 /* Used to determine if the e_flags field has been initialized */
1841 bfd_boolean flags_init
;
1844 /* Indicate if the bfd contains SHF_GNU_MBIND sections or symbols that
1845 have the STT_GNU_IFUNC symbol type or STB_GNU_UNIQUE binding. Used
1846 to set the osabi field in the ELF header structure. */
1849 elf_gnu_osabi_mbind
= 1 << 0,
1850 elf_gnu_osabi_ifunc
= 1 << 1,
1851 elf_gnu_osabi_unique
= 1 << 2,
1854 typedef struct elf_section_list
1856 Elf_Internal_Shdr hdr
;
1858 struct elf_section_list
* next
;
1861 enum dynamic_lib_link_class
{
1865 DYN_NO_ADD_NEEDED
= 4,
1869 /* Some private data is stashed away for future use using the tdata pointer
1870 in the bfd structure. */
1872 struct elf_obj_tdata
1874 Elf_Internal_Ehdr elf_header
[1]; /* Actual data, but ref like ptr */
1875 Elf_Internal_Shdr
**elf_sect_ptr
;
1876 Elf_Internal_Phdr
*phdr
;
1877 Elf_Internal_Shdr symtab_hdr
;
1878 Elf_Internal_Shdr shstrtab_hdr
;
1879 Elf_Internal_Shdr strtab_hdr
;
1880 Elf_Internal_Shdr dynsymtab_hdr
;
1881 Elf_Internal_Shdr dynstrtab_hdr
;
1882 Elf_Internal_Shdr dynversym_hdr
;
1883 Elf_Internal_Shdr dynverref_hdr
;
1884 Elf_Internal_Shdr dynverdef_hdr
;
1885 elf_section_list
* symtab_shndx_list
;
1886 bfd_vma gp
; /* The gp value */
1887 unsigned int gp_size
; /* The gp size */
1888 unsigned int num_elf_sections
; /* elf_sect_ptr size */
1890 /* A mapping from external symbols to entries in the linker hash
1891 table, used when linking. This is indexed by the symbol index
1892 minus the sh_info field of the symbol table header. */
1893 struct elf_link_hash_entry
**sym_hashes
;
1895 /* Track usage and final offsets of GOT entries for local symbols.
1896 This array is indexed by symbol index. Elements are used
1897 identically to "got" in struct elf_link_hash_entry. */
1900 bfd_signed_vma
*refcounts
;
1902 struct got_entry
**ents
;
1905 /* The linker ELF emulation code needs to let the backend ELF linker
1906 know what filename should be used for a dynamic object if the
1907 dynamic object is found using a search. The emulation code then
1908 sometimes needs to know what name was actually used. Until the
1909 file has been added to the linker symbol table, this field holds
1910 the name the linker wants. After it has been added, it holds the
1911 name actually used, which will be the DT_SONAME entry if there is
1913 const char *dt_name
;
1915 /* The linker emulation needs to know what audit libs
1916 are used by a dynamic object. */
1917 const char *dt_audit
;
1919 /* Used by find_nearest_line entry point. */
1922 /* A place to stash dwarf1 info for this bfd. */
1923 struct dwarf1_debug
*dwarf1_find_line_info
;
1925 /* A place to stash dwarf2 info for this bfd. */
1926 void *dwarf2_find_line_info
;
1928 /* Stash away info for yet another find line/function variant. */
1929 void *elf_find_function_cache
;
1931 /* Number of symbol version definitions we are about to emit. */
1932 unsigned int cverdefs
;
1934 /* Number of symbol version references we are about to emit. */
1935 unsigned int cverrefs
;
1937 /* Symbol version definitions in external objects. */
1938 Elf_Internal_Verdef
*verdef
;
1940 /* Symbol version references to external objects. */
1941 Elf_Internal_Verneed
*verref
;
1943 /* A pointer to the .eh_frame section. */
1944 asection
*eh_frame_section
;
1946 /* Symbol buffer. */
1949 /* List of GNU properties. Will be updated by setup_gnu_properties
1950 after all input GNU properties are merged for output. */
1951 elf_property_list
*properties
;
1953 obj_attribute known_obj_attributes
[2][NUM_KNOWN_OBJ_ATTRIBUTES
];
1954 obj_attribute_list
*other_obj_attributes
[2];
1956 /* Linked-list containing information about every Systemtap section
1957 found in the object file. Each section corresponds to one entry
1959 struct sdt_note
*sdt_note_head
;
1961 Elf_Internal_Shdr
**group_sect_ptr
;
1962 unsigned int num_group
;
1964 /* Index into group_sect_ptr, updated by setup_group when finding a
1965 section's group. Used to optimize subsequent group searches. */
1966 unsigned int group_search_offset
;
1968 unsigned int symtab_section
, dynsymtab_section
;
1969 unsigned int dynversym_section
, dynverdef_section
, dynverref_section
;
1971 /* An identifier used to distinguish different target
1972 specific extensions to this structure. */
1973 ENUM_BITFIELD (elf_target_id
) object_id
: 6;
1975 /* Whether a dyanmic object was specified normally on the linker
1976 command line, or was specified when --as-needed was in effect,
1977 or was found via a DT_NEEDED entry. */
1978 ENUM_BITFIELD (dynamic_lib_link_class
) dyn_lib_class
: 4;
1980 /* Whether the bfd uses OS specific bits that require ELFOSABI_GNU. */
1981 ENUM_BITFIELD (elf_gnu_osabi
) has_gnu_osabi
: 3;
1983 /* Whether if the bfd contains the GNU_PROPERTY_NO_COPY_ON_PROTECTED
1985 unsigned int has_no_copy_on_protected
: 1;
1987 /* Irix 5 often screws up the symbol table, sorting local symbols
1988 after global symbols. This flag is set if the symbol table in
1989 this BFD appears to be screwed up. If it is, we ignore the
1990 sh_info field in the symbol table header, and always read all the
1992 unsigned int bad_symtab
: 1;
1994 /* Information grabbed from an elf core file. */
1995 struct core_elf_obj_tdata
*core
;
1997 /* More information held for output ELF BFDs. */
1998 struct output_elf_obj_tdata
*o
;
2001 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
2003 #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id)
2004 #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size)
2005 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
2006 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
2007 #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections)
2008 #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map)
2009 #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos)
2010 #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr)
2011 #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags)
2012 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr)
2013 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
2014 #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list)
2015 #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section)
2016 #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section)
2017 #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr)
2018 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
2019 #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
2020 #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
2021 #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
2022 #define elf_eh_frame_section(bfd) \
2023 (elf_tdata(bfd) -> eh_frame_section)
2024 #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms)
2025 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms)
2026 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
2027 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
2028 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
2029 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
2030 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
2031 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
2032 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
2033 #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
2034 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
2035 #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit)
2036 #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
2037 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
2038 #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init)
2039 #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes)
2040 #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes)
2041 #define elf_known_obj_attributes_proc(bfd) \
2042 (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC])
2043 #define elf_other_obj_attributes_proc(bfd) \
2044 (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
2045 #define elf_properties(bfd) (elf_tdata (bfd) -> properties)
2046 #define elf_has_no_copy_on_protected(bfd) \
2047 (elf_tdata(bfd) -> has_no_copy_on_protected)
2049 extern void _bfd_elf_swap_verdef_in
2050 (bfd
*, const Elf_External_Verdef
*, Elf_Internal_Verdef
*);
2051 extern void _bfd_elf_swap_verdef_out
2052 (bfd
*, const Elf_Internal_Verdef
*, Elf_External_Verdef
*);
2053 extern void _bfd_elf_swap_verdaux_in
2054 (bfd
*, const Elf_External_Verdaux
*, Elf_Internal_Verdaux
*);
2055 extern void _bfd_elf_swap_verdaux_out
2056 (bfd
*, const Elf_Internal_Verdaux
*, Elf_External_Verdaux
*);
2057 extern void _bfd_elf_swap_verneed_in
2058 (bfd
*, const Elf_External_Verneed
*, Elf_Internal_Verneed
*);
2059 extern void _bfd_elf_swap_verneed_out
2060 (bfd
*, const Elf_Internal_Verneed
*, Elf_External_Verneed
*);
2061 extern void _bfd_elf_swap_vernaux_in
2062 (bfd
*, const Elf_External_Vernaux
*, Elf_Internal_Vernaux
*);
2063 extern void _bfd_elf_swap_vernaux_out
2064 (bfd
*, const Elf_Internal_Vernaux
*, Elf_External_Vernaux
*);
2065 extern void _bfd_elf_swap_versym_in
2066 (bfd
*, const Elf_External_Versym
*, Elf_Internal_Versym
*);
2067 extern void _bfd_elf_swap_versym_out
2068 (bfd
*, const Elf_Internal_Versym
*, Elf_External_Versym
*);
2070 extern unsigned int _bfd_elf_section_from_bfd_section
2071 (bfd
*, asection
*);
2072 extern char *bfd_elf_string_from_elf_section
2073 (bfd
*, unsigned, unsigned);
2074 extern Elf_Internal_Sym
*bfd_elf_get_elf_syms
2075 (bfd
*, Elf_Internal_Shdr
*, size_t, size_t, Elf_Internal_Sym
*, void *,
2076 Elf_External_Sym_Shndx
*);
2077 extern char * bfd_elf_get_str_section (bfd
*, unsigned int);
2078 extern const char *bfd_elf_sym_name
2079 (bfd
*, Elf_Internal_Shdr
*, Elf_Internal_Sym
*, asection
*);
2081 extern bfd_boolean _bfd_elf_copy_private_bfd_data
2083 extern bfd_boolean _bfd_elf_print_private_bfd_data
2085 const char * _bfd_elf_get_symbol_version_string
2086 (bfd
*, asymbol
*, bfd_boolean
, bfd_boolean
*);
2087 extern void bfd_elf_print_symbol
2088 (bfd
*, void *, asymbol
*, bfd_print_symbol_type
);
2090 extern unsigned int _bfd_elf_eh_frame_address_size
2091 (bfd
*, const asection
*);
2092 extern bfd_byte _bfd_elf_encode_eh_address
2093 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*osec
, bfd_vma offset
,
2094 asection
*loc_sec
, bfd_vma loc_offset
, bfd_vma
*encoded
);
2095 extern bfd_boolean _bfd_elf_can_make_relative
2096 (bfd
*input_bfd
, struct bfd_link_info
*info
, asection
*eh_frame_section
);
2098 extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
2099 (const struct bfd_link_info
*, const asection
*,
2100 const Elf_Internal_Rela
*);
2101 extern bfd_vma _bfd_elf_rela_local_sym
2102 (bfd
*, Elf_Internal_Sym
*, asection
**, Elf_Internal_Rela
*);
2103 extern bfd_vma _bfd_elf_rel_local_sym
2104 (bfd
*, Elf_Internal_Sym
*, asection
**, bfd_vma
);
2105 extern bfd_vma _bfd_elf_section_offset
2106 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2108 extern unsigned long bfd_elf_hash
2110 extern unsigned long bfd_elf_gnu_hash
2113 extern bfd_reloc_status_type bfd_elf_generic_reloc
2114 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
2115 extern bfd_boolean bfd_elf_allocate_object
2116 (bfd
*, size_t, enum elf_target_id
);
2117 extern bfd_boolean bfd_elf_make_object
2119 extern bfd_boolean bfd_elf_mkcorefile
2121 extern bfd_boolean _bfd_elf_make_section_from_shdr
2122 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
2123 extern bfd_boolean _bfd_elf_make_section_from_phdr
2124 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
2125 extern struct bfd_hash_entry
*_bfd_elf_link_hash_newfunc
2126 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);
2127 extern struct bfd_link_hash_table
*_bfd_elf_link_hash_table_create
2129 extern void _bfd_elf_link_hash_table_free
2131 extern void _bfd_elf_link_hash_copy_indirect
2132 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2133 struct elf_link_hash_entry
*);
2134 extern void _bfd_elf_link_hash_hide_symbol
2135 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
2136 extern void _bfd_elf_link_hide_symbol
2137 (bfd
*, struct bfd_link_info
*, struct bfd_link_hash_entry
*);
2138 extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
2139 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2140 extern bfd_boolean _bfd_elf_link_hash_table_init
2141 (struct elf_link_hash_table
*, bfd
*,
2142 struct bfd_hash_entry
*(*)
2143 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *),
2144 unsigned int, enum elf_target_id
);
2145 extern bfd_boolean _bfd_elf_slurp_version_tables
2146 (bfd
*, bfd_boolean
);
2147 extern bfd_boolean _bfd_elf_merge_sections
2148 (bfd
*, struct bfd_link_info
*);
2149 extern bfd_boolean _bfd_elf_match_sections_by_type
2150 (bfd
*, const asection
*, bfd
*, const asection
*);
2151 extern bfd_boolean bfd_elf_is_group_section
2152 (bfd
*, const struct bfd_section
*);
2153 extern const char *bfd_elf_group_name
2154 (bfd
*, const struct bfd_section
*);
2155 extern bfd_boolean _bfd_elf_section_already_linked
2156 (bfd
*, asection
*, struct bfd_link_info
*);
2157 extern void bfd_elf_set_group_contents
2158 (bfd
*, asection
*, void *);
2159 extern unsigned int _bfd_elf_filter_global_symbols
2160 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
2161 extern asection
*_bfd_elf_check_kept_section
2162 (asection
*, struct bfd_link_info
*);
2163 #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms
2164 extern void _bfd_elf_copy_link_hash_symbol_type
2165 (bfd
*, struct bfd_link_hash_entry
*, struct bfd_link_hash_entry
*);
2166 extern bfd_boolean _bfd_elf_size_group_sections
2167 (struct bfd_link_info
*);
2168 extern bfd_boolean _bfd_elf_fixup_group_sections
2169 (bfd
*, asection
*);
2170 extern bfd_boolean _bfd_elf_copy_private_header_data
2172 extern bfd_boolean _bfd_elf_copy_private_symbol_data
2173 (bfd
*, asymbol
*, bfd
*, asymbol
*);
2174 #define _bfd_generic_init_private_section_data \
2175 _bfd_elf_init_private_section_data
2176 extern bfd_boolean _bfd_elf_init_private_section_data
2177 (bfd
*, asection
*, bfd
*, asection
*, struct bfd_link_info
*);
2178 extern bfd_boolean _bfd_elf_copy_private_section_data
2179 (bfd
*, asection
*, bfd
*, asection
*);
2180 extern bfd_boolean _bfd_elf_write_object_contents
2182 extern bfd_boolean _bfd_elf_write_corefile_contents
2184 extern bfd_boolean _bfd_elf_set_section_contents
2185 (bfd
*, sec_ptr
, const void *, file_ptr
, bfd_size_type
);
2186 extern long _bfd_elf_get_symtab_upper_bound
2188 extern long _bfd_elf_canonicalize_symtab
2189 (bfd
*, asymbol
**);
2190 extern long _bfd_elf_get_dynamic_symtab_upper_bound
2192 extern long _bfd_elf_canonicalize_dynamic_symtab
2193 (bfd
*, asymbol
**);
2194 extern long _bfd_elf_get_synthetic_symtab
2195 (bfd
*, long, asymbol
**, long, asymbol
**, asymbol
**);
2196 extern long _bfd_elf_get_reloc_upper_bound
2198 extern long _bfd_elf_canonicalize_reloc
2199 (bfd
*, sec_ptr
, arelent
**, asymbol
**);
2200 extern asection
* _bfd_elf_get_dynamic_reloc_section
2201 (bfd
*, asection
*, bfd_boolean
);
2202 extern asection
* _bfd_elf_make_dynamic_reloc_section
2203 (asection
*, bfd
*, unsigned int, bfd
*, bfd_boolean
);
2204 extern long _bfd_elf_get_dynamic_reloc_upper_bound
2206 extern long _bfd_elf_canonicalize_dynamic_reloc
2207 (bfd
*, arelent
**, asymbol
**);
2208 extern asymbol
*_bfd_elf_make_empty_symbol
2210 extern void _bfd_elf_get_symbol_info
2211 (bfd
*, asymbol
*, symbol_info
*);
2212 extern bfd_boolean _bfd_elf_is_local_label_name
2213 (bfd
*, const char *);
2214 extern alent
*_bfd_elf_get_lineno
2216 extern bfd_boolean _bfd_elf_set_arch_mach
2217 (bfd
*, enum bfd_architecture
, unsigned long);
2218 extern bfd_boolean _bfd_elf_find_nearest_line
2219 (bfd
*, asymbol
**, asection
*, bfd_vma
,
2220 const char **, const char **, unsigned int *, unsigned int *);
2221 extern bfd_boolean _bfd_elf_find_line
2222 (bfd
*, asymbol
**, asymbol
*, const char **, unsigned int *);
2223 extern bfd_boolean _bfd_elf_find_inliner_info
2224 (bfd
*, const char **, const char **, unsigned int *);
2225 extern asymbol
*_bfd_elf_find_function
2226 (bfd
*, asymbol
**, asection
*, bfd_vma
, const char **, const char **);
2227 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
2228 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
2229 extern int _bfd_elf_sizeof_headers
2230 (bfd
*, struct bfd_link_info
*);
2231 extern bfd_boolean _bfd_elf_new_section_hook
2232 (bfd
*, asection
*);
2233 extern const struct bfd_elf_special_section
*_bfd_elf_get_special_section
2234 (const char *, const struct bfd_elf_special_section
*, unsigned int);
2235 extern const struct bfd_elf_special_section
*_bfd_elf_get_sec_type_attr
2236 (bfd
*, asection
*);
2238 extern bfd_boolean _bfd_elf_link_hide_sym_by_version
2239 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2241 /* If the target doesn't have reloc handling written yet: */
2242 extern bfd_boolean _bfd_elf_no_info_to_howto
2243 (bfd
*, arelent
*, Elf_Internal_Rela
*);
2245 extern bfd_boolean bfd_section_from_shdr
2246 (bfd
*, unsigned int shindex
);
2247 extern bfd_boolean bfd_section_from_phdr
2248 (bfd
*, Elf_Internal_Phdr
*, int);
2250 extern int _bfd_elf_symbol_from_bfd_symbol
2251 (bfd
*, asymbol
**);
2253 extern Elf_Internal_Sym
*bfd_sym_from_r_symndx
2254 (struct sym_cache
*, bfd
*, unsigned long);
2255 extern asection
*bfd_section_from_elf_index
2256 (bfd
*, unsigned int);
2258 extern struct elf_strtab_hash
* _bfd_elf_strtab_init
2260 extern void _bfd_elf_strtab_free
2261 (struct elf_strtab_hash
*);
2262 extern size_t _bfd_elf_strtab_add
2263 (struct elf_strtab_hash
*, const char *, bfd_boolean
);
2264 extern void _bfd_elf_strtab_addref
2265 (struct elf_strtab_hash
*, size_t);
2266 extern void _bfd_elf_strtab_delref
2267 (struct elf_strtab_hash
*, size_t);
2268 extern unsigned int _bfd_elf_strtab_refcount
2269 (struct elf_strtab_hash
*, size_t);
2270 extern void _bfd_elf_strtab_clear_all_refs
2271 (struct elf_strtab_hash
*);
2272 extern void *_bfd_elf_strtab_save
2273 (struct elf_strtab_hash
*);
2274 extern void _bfd_elf_strtab_restore
2275 (struct elf_strtab_hash
*, void *);
2276 extern bfd_size_type _bfd_elf_strtab_size
2277 (struct elf_strtab_hash
*);
2278 extern bfd_size_type _bfd_elf_strtab_len
2279 (struct elf_strtab_hash
*);
2280 extern bfd_size_type _bfd_elf_strtab_offset
2281 (struct elf_strtab_hash
*, size_t);
2282 extern const char * _bfd_elf_strtab_str
2283 (struct elf_strtab_hash
*, size_t idx
, bfd_size_type
*offset
);
2284 extern bfd_boolean _bfd_elf_strtab_emit
2285 (bfd
*, struct elf_strtab_hash
*);
2286 extern void _bfd_elf_strtab_finalize
2287 (struct elf_strtab_hash
*);
2289 extern bfd_boolean bfd_elf_parse_eh_frame_entries
2290 (bfd
*, struct bfd_link_info
*);
2291 extern bfd_boolean _bfd_elf_parse_eh_frame_entry
2292 (struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2293 extern void _bfd_elf_parse_eh_frame
2294 (bfd
*, struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2295 extern bfd_boolean _bfd_elf_end_eh_frame_parsing
2296 (struct bfd_link_info
*info
);
2298 extern bfd_boolean _bfd_elf_discard_section_eh_frame
2299 (bfd
*, struct bfd_link_info
*, asection
*,
2300 bfd_boolean (*) (bfd_vma
, void *), struct elf_reloc_cookie
*);
2301 extern bfd_boolean _bfd_elf_adjust_eh_frame_global_symbol
2302 (struct elf_link_hash_entry
*, void *);
2303 extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
2304 (bfd
*, struct bfd_link_info
*);
2305 extern bfd_vma _bfd_elf_eh_frame_section_offset
2306 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2307 extern bfd_boolean _bfd_elf_write_section_eh_frame
2308 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2309 bfd_boolean _bfd_elf_write_section_eh_frame_entry
2310 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2311 extern bfd_boolean
_bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info
*);
2312 extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
2313 (bfd
*, struct bfd_link_info
*);
2314 extern bfd_boolean _bfd_elf_eh_frame_present
2315 (struct bfd_link_info
*);
2316 extern bfd_boolean _bfd_elf_eh_frame_entry_present
2317 (struct bfd_link_info
*);
2318 extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
2319 (struct bfd_link_info
*);
2321 extern bfd_boolean
_bfd_elf_hash_symbol (struct elf_link_hash_entry
*);
2323 extern long _bfd_elf_link_lookup_local_dynindx
2324 (struct bfd_link_info
*, bfd
*, long);
2325 extern bfd_boolean _bfd_elf_compute_section_file_positions
2326 (bfd
*, struct bfd_link_info
*);
2327 extern file_ptr _bfd_elf_assign_file_position_for_section
2328 (Elf_Internal_Shdr
*, file_ptr
, bfd_boolean
);
2329 extern bfd_boolean _bfd_elf_modify_headers
2330 (bfd
*, struct bfd_link_info
*);
2332 extern bfd_boolean _bfd_elf_validate_reloc
2335 extern bfd_boolean bfd_elf_record_link_assignment
2336 (bfd
*, struct bfd_link_info
*, const char *, bfd_boolean
,
2338 extern bfd_boolean
bfd_elf_stack_segment_size (bfd
*, struct bfd_link_info
*,
2339 const char *, bfd_vma
);
2340 extern bfd_boolean bfd_elf_size_dynamic_sections
2341 (bfd
*, const char *, const char *, const char *, const char *, const char *,
2342 const char * const *, struct bfd_link_info
*, struct bfd_section
**);
2343 extern bfd_boolean bfd_elf_size_dynsym_hash_dynstr
2344 (bfd
*, struct bfd_link_info
*);
2345 extern bfd_boolean bfd_elf_get_bfd_needed_list
2346 (bfd
*, struct bfd_link_needed_list
**);
2347 extern struct bfd_link_needed_list
*bfd_elf_get_needed_list
2348 (bfd
*, struct bfd_link_info
*);
2349 extern void bfd_elf_set_dt_needed_name
2350 (bfd
*, const char *);
2351 extern const char *bfd_elf_get_dt_soname
2353 extern void bfd_elf_set_dyn_lib_class
2354 (bfd
*, enum dynamic_lib_link_class
);
2355 extern int bfd_elf_get_dyn_lib_class
2357 extern struct bfd_link_needed_list
*bfd_elf_get_runpath_list
2358 (bfd
*, struct bfd_link_info
*);
2359 extern int bfd_elf_discard_info
2360 (bfd
*, struct bfd_link_info
*);
2361 extern unsigned int _bfd_elf_default_action_discarded
2362 (struct bfd_section
*);
2363 extern struct bfd_section
*_bfd_elf_tls_setup
2364 (bfd
*, struct bfd_link_info
*);
2366 extern bfd_boolean _bfd_elf_link_create_dynamic_sections
2367 (bfd
*, struct bfd_link_info
*);
2368 extern bfd_boolean _bfd_elf_omit_section_dynsym_default
2369 (bfd
*, struct bfd_link_info
*, asection
*);
2370 extern bfd_boolean _bfd_elf_omit_section_dynsym_all
2371 (bfd
*, struct bfd_link_info
*, asection
*);
2372 extern bfd_boolean _bfd_elf_create_dynamic_sections
2373 (bfd
*, struct bfd_link_info
*);
2374 extern bfd_boolean _bfd_elf_create_got_section
2375 (bfd
*, struct bfd_link_info
*);
2376 extern asection
*_bfd_elf_section_for_symbol
2377 (struct elf_reloc_cookie
*, unsigned long, bfd_boolean
);
2378 extern struct elf_link_hash_entry
*_bfd_elf_define_linkage_sym
2379 (bfd
*, struct bfd_link_info
*, asection
*, const char *);
2380 extern void _bfd_elf_init_1_index_section
2381 (bfd
*, struct bfd_link_info
*);
2382 extern void _bfd_elf_init_2_index_sections
2383 (bfd
*, struct bfd_link_info
*);
2385 extern bfd_boolean _bfd_elfcore_make_pseudosection
2386 (bfd
*, char *, size_t, ufile_ptr
);
2387 extern char *_bfd_elfcore_strndup
2388 (bfd
*, char *, size_t);
2390 extern Elf_Internal_Rela
*_bfd_elf_link_read_relocs
2391 (bfd
*, asection
*, void *, Elf_Internal_Rela
*, bfd_boolean
);
2393 extern bfd_boolean _bfd_elf_link_output_relocs
2394 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
2395 struct elf_link_hash_entry
**);
2397 extern bfd_boolean _bfd_elf_adjust_dynamic_copy
2398 (struct bfd_link_info
*, struct elf_link_hash_entry
*, asection
*);
2400 extern bfd_boolean _bfd_elf_dynamic_symbol_p
2401 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2403 extern bfd_boolean _bfd_elf_symbol_refs_local_p
2404 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2406 extern bfd_reloc_status_type bfd_elf_perform_complex_relocation
2407 (bfd
*, asection
*, bfd_byte
*, Elf_Internal_Rela
*, bfd_vma
);
2409 extern bfd_boolean _bfd_elf_setup_sections
2412 extern struct bfd_link_hash_entry
*bfd_elf_define_start_stop
2413 (struct bfd_link_info
*, const char *, asection
*);
2415 extern bfd_boolean
_bfd_elf_init_file_header (bfd
*, struct bfd_link_info
*);
2417 extern bfd_boolean
_bfd_elf_final_write_processing (bfd
*);
2419 extern bfd_cleanup bfd_elf32_object_p
2421 extern bfd_cleanup bfd_elf32_core_file_p
2423 extern char *bfd_elf32_core_file_failing_command
2425 extern int bfd_elf32_core_file_failing_signal
2427 extern bfd_boolean bfd_elf32_core_file_matches_executable_p
2429 extern int bfd_elf32_core_file_pid
2431 extern bfd_boolean _bfd_elf32_core_find_build_id
2434 extern bfd_boolean bfd_elf32_swap_symbol_in
2435 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2436 extern void bfd_elf32_swap_symbol_out
2437 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2438 extern void bfd_elf32_swap_reloc_in
2439 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2440 extern void bfd_elf32_swap_reloc_out
2441 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2442 extern void bfd_elf32_swap_reloca_in
2443 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2444 extern void bfd_elf32_swap_reloca_out
2445 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2446 extern void bfd_elf32_swap_phdr_in
2447 (bfd
*, const Elf32_External_Phdr
*, Elf_Internal_Phdr
*);
2448 extern void bfd_elf32_swap_phdr_out
2449 (bfd
*, const Elf_Internal_Phdr
*, Elf32_External_Phdr
*);
2450 extern void bfd_elf32_swap_dyn_in
2451 (bfd
*, const void *, Elf_Internal_Dyn
*);
2452 extern void bfd_elf32_swap_dyn_out
2453 (bfd
*, const Elf_Internal_Dyn
*, void *);
2454 extern long bfd_elf32_slurp_symbol_table
2455 (bfd
*, asymbol
**, bfd_boolean
);
2456 extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
2458 extern int bfd_elf32_write_out_phdrs
2459 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2460 extern bfd_boolean bfd_elf32_checksum_contents
2461 (bfd
* , void (*) (const void *, size_t, void *), void *);
2462 extern void bfd_elf32_write_relocs
2463 (bfd
*, asection
*, void *);
2464 extern bfd_boolean bfd_elf32_slurp_reloc_table
2465 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2467 extern bfd_cleanup bfd_elf64_object_p
2469 extern bfd_cleanup bfd_elf64_core_file_p
2471 extern char *bfd_elf64_core_file_failing_command
2473 extern int bfd_elf64_core_file_failing_signal
2475 extern bfd_boolean bfd_elf64_core_file_matches_executable_p
2477 extern int bfd_elf64_core_file_pid
2479 extern bfd_boolean _bfd_elf64_core_find_build_id
2482 extern bfd_boolean bfd_elf64_swap_symbol_in
2483 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2484 extern void bfd_elf64_swap_symbol_out
2485 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2486 extern void bfd_elf64_swap_reloc_in
2487 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2488 extern void bfd_elf64_swap_reloc_out
2489 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2490 extern void bfd_elf64_swap_reloca_in
2491 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2492 extern void bfd_elf64_swap_reloca_out
2493 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2494 extern void bfd_elf64_swap_phdr_in
2495 (bfd
*, const Elf64_External_Phdr
*, Elf_Internal_Phdr
*);
2496 extern void bfd_elf64_swap_phdr_out
2497 (bfd
*, const Elf_Internal_Phdr
*, Elf64_External_Phdr
*);
2498 extern void bfd_elf64_swap_dyn_in
2499 (bfd
*, const void *, Elf_Internal_Dyn
*);
2500 extern void bfd_elf64_swap_dyn_out
2501 (bfd
*, const Elf_Internal_Dyn
*, void *);
2502 extern long bfd_elf64_slurp_symbol_table
2503 (bfd
*, asymbol
**, bfd_boolean
);
2504 extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
2506 extern int bfd_elf64_write_out_phdrs
2507 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2508 extern bfd_boolean bfd_elf64_checksum_contents
2509 (bfd
* , void (*) (const void *, size_t, void *), void *);
2510 extern void bfd_elf64_write_relocs
2511 (bfd
*, asection
*, void *);
2512 extern bfd_boolean bfd_elf64_slurp_reloc_table
2513 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2515 extern bfd_boolean _bfd_elf_default_relocs_compatible
2516 (const bfd_target
*, const bfd_target
*);
2518 extern bfd_boolean _bfd_elf_relocs_compatible
2519 (const bfd_target
*, const bfd_target
*);
2520 extern bfd_boolean _bfd_elf_notice_as_needed
2521 (bfd
*, struct bfd_link_info
*, enum notice_asneeded_action
);
2523 extern struct elf_link_hash_entry
*_bfd_elf_archive_symbol_lookup
2524 (bfd
*, struct bfd_link_info
*, const char *);
2525 extern bfd_boolean bfd_elf_link_add_symbols
2526 (bfd
*, struct bfd_link_info
*);
2527 extern bfd_boolean _bfd_elf_add_dynamic_entry
2528 (struct bfd_link_info
*, bfd_vma
, bfd_vma
);
2529 extern bfd_boolean _bfd_elf_strip_zero_sized_dynamic_sections
2530 (struct bfd_link_info
*);
2531 extern int bfd_elf_add_dt_needed_tag
2532 (bfd
*, struct bfd_link_info
*);
2533 extern bfd_boolean _bfd_elf_link_check_relocs
2534 (bfd
*, struct bfd_link_info
*);
2536 extern bfd_boolean bfd_elf_link_record_dynamic_symbol
2537 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2539 extern int bfd_elf_link_record_local_dynamic_symbol
2540 (struct bfd_link_info
*, bfd
*, long);
2542 extern bfd_boolean _bfd_elf_close_and_cleanup
2545 extern bfd_boolean _bfd_elf_common_definition
2546 (Elf_Internal_Sym
*);
2548 extern unsigned int _bfd_elf_common_section_index
2551 extern asection
*_bfd_elf_common_section
2554 extern bfd_vma _bfd_elf_default_got_elt_size
2555 (bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd
*,
2558 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
2559 (bfd
*, arelent
*, struct bfd_symbol
*, void *,
2560 asection
*, bfd
*, char **);
2562 extern bfd_boolean bfd_elf_final_link
2563 (bfd
*, struct bfd_link_info
*);
2565 extern void _bfd_elf_gc_keep
2566 (struct bfd_link_info
*info
);
2568 extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
2569 (struct elf_link_hash_entry
*h
, void *inf
);
2571 extern bfd_boolean bfd_elf_gc_sections
2572 (bfd
*, struct bfd_link_info
*);
2574 extern bfd_boolean bfd_elf_gc_record_vtinherit
2575 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2577 extern bfd_boolean bfd_elf_gc_record_vtentry
2578 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2580 extern asection
*_bfd_elf_gc_mark_hook
2581 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
2582 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
2584 extern asection
*_bfd_elf_gc_mark_rsec
2585 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2586 struct elf_reloc_cookie
*, bfd_boolean
*);
2588 extern bfd_boolean _bfd_elf_gc_mark_reloc
2589 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2590 struct elf_reloc_cookie
*);
2592 extern bfd_boolean _bfd_elf_gc_mark_fdes
2593 (struct bfd_link_info
*, asection
*, asection
*, elf_gc_mark_hook_fn
,
2594 struct elf_reloc_cookie
*);
2596 extern bfd_boolean _bfd_elf_gc_mark
2597 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
);
2599 extern bfd_boolean _bfd_elf_gc_mark_extra_sections
2600 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
2602 extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
2603 (bfd
*, struct bfd_link_info
*);
2605 extern bfd_boolean bfd_elf_gc_common_final_link
2606 (bfd
*, struct bfd_link_info
*);
2608 extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
2611 extern struct elf_segment_map
* _bfd_elf_make_dynamic_segment
2612 (bfd
*, asection
*);
2614 extern bfd_boolean _bfd_elf_map_sections_to_segments
2615 (bfd
*, struct bfd_link_info
*);
2617 extern bfd_boolean
_bfd_elf_is_function_type (unsigned int);
2619 extern bfd_size_type
_bfd_elf_maybe_function_sym (const asymbol
*, asection
*,
2622 extern asection
*_bfd_elf_plt_get_reloc_section (bfd
*, const char *);
2624 extern int bfd_elf_get_default_section_type (flagword
);
2626 extern bfd_boolean bfd_elf_lookup_section_flags
2627 (struct bfd_link_info
*, struct flag_info
*, asection
*);
2629 extern Elf_Internal_Phdr
* _bfd_elf_find_segment_containing_section
2630 (bfd
* abfd
, asection
* section
);
2632 /* PowerPC @tls opcode transform/validate. */
2633 extern unsigned int _bfd_elf_ppc_at_tls_transform
2634 (unsigned int, unsigned int);
2635 /* PowerPC @tprel opcode transform/validate. */
2636 extern unsigned int _bfd_elf_ppc_at_tprel_transform
2637 (unsigned int, unsigned int);
2638 /* PowerPC elf_object_p tweak. */
2639 extern bfd_boolean
_bfd_elf_ppc_set_arch (bfd
*);
2640 /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */
2641 extern bfd_boolean _bfd_elf_ppc_merge_fp_attributes
2642 (bfd
*, struct bfd_link_info
*);
2644 /* Return an upper bound on the number of bytes required to store a
2645 copy of ABFD's program header table entries. Return -1 if an error
2646 occurs; bfd_get_error will return an appropriate code. */
2647 extern long bfd_get_elf_phdr_upper_bound
2650 /* Copy ABFD's program header table entries to *PHDRS. The entries
2651 will be stored as an array of Elf_Internal_Phdr structures, as
2652 defined in include/elf/internal.h. To find out how large the
2653 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
2655 Return the number of program header table entries read, or -1 if an
2656 error occurs; bfd_get_error will return an appropriate code. */
2657 extern int bfd_get_elf_phdrs
2658 (bfd
*abfd
, void *phdrs
);
2660 /* Exported interface for writing elf corefile notes. */
2661 extern char *elfcore_write_note
2662 (bfd
*, char *, int *, const char *, int, const void *, int);
2663 extern char *elfcore_write_prpsinfo
2664 (bfd
*, char *, int *, const char *, const char *);
2665 extern char *elfcore_write_prstatus
2666 (bfd
*, char *, int *, long, int, const void *);
2667 extern char * elfcore_write_pstatus
2668 (bfd
*, char *, int *, long, int, const void *);
2669 extern char *elfcore_write_prfpreg
2670 (bfd
*, char *, int *, const void *, int);
2671 extern char *elfcore_write_prxfpreg
2672 (bfd
*, char *, int *, const void *, int);
2673 extern char *elfcore_write_xstatereg
2674 (bfd
*, char *, int *, const void *, int);
2675 extern char *elfcore_write_ppc_vmx
2676 (bfd
*, char *, int *, const void *, int);
2677 extern char *elfcore_write_ppc_vsx
2678 (bfd
*, char *, int *, const void *, int);
2679 extern char *elfcore_write_ppc_tar
2680 (bfd
*, char *, int *, const void *, int);
2681 extern char *elfcore_write_ppc_ppr
2682 (bfd
*, char *, int *, const void *, int);
2683 extern char *elfcore_write_ppc_dscr
2684 (bfd
*, char *, int *, const void *, int);
2685 extern char *elfcore_write_ppc_ebb
2686 (bfd
*, char *, int *, const void *, int);
2687 extern char *elfcore_write_ppc_pmu
2688 (bfd
*, char *, int *, const void *, int);
2689 extern char *elfcore_write_ppc_tm_cgpr
2690 (bfd
*, char *, int *, const void *, int);
2691 extern char *elfcore_write_ppc_tm_cfpr
2692 (bfd
*, char *, int *, const void *, int);
2693 extern char *elfcore_write_ppc_tm_cvmx
2694 (bfd
*, char *, int *, const void *, int);
2695 extern char *elfcore_write_ppc_tm_cvsx
2696 (bfd
*, char *, int *, const void *, int);
2697 extern char *elfcore_write_ppc_tm_spr
2698 (bfd
*, char *, int *, const void *, int);
2699 extern char *elfcore_write_ppc_tm_ctar
2700 (bfd
*, char *, int *, const void *, int);
2701 extern char *elfcore_write_ppc_tm_cppr
2702 (bfd
*, char *, int *, const void *, int);
2703 extern char *elfcore_write_ppc_tm_cdscr
2704 (bfd
*, char *, int *, const void *, int);
2705 extern char *elfcore_write_s390_timer
2706 (bfd
*, char *, int *, const void *, int);
2707 extern char *elfcore_write_s390_todcmp
2708 (bfd
*, char *, int *, const void *, int);
2709 extern char *elfcore_write_s390_todpreg
2710 (bfd
*, char *, int *, const void *, int);
2711 extern char *elfcore_write_s390_ctrs
2712 (bfd
*, char *, int *, const void *, int);
2713 extern char *elfcore_write_s390_prefix
2714 (bfd
*, char *, int *, const void *, int);
2715 extern char *elfcore_write_s390_last_break
2716 (bfd
*, char *, int *, const void *, int);
2717 extern char *elfcore_write_s390_system_call
2718 (bfd
*, char *, int *, const void *, int);
2719 extern char *elfcore_write_s390_tdb
2720 (bfd
*, char *, int *, const void *, int);
2721 extern char *elfcore_write_s390_vxrs_low
2722 (bfd
*, char *, int *, const void *, int);
2723 extern char *elfcore_write_s390_vxrs_high
2724 (bfd
*, char *, int *, const void *, int);
2725 extern char *elfcore_write_s390_gs_cb
2726 (bfd
*, char *, int *, const void *, int);
2727 extern char *elfcore_write_s390_gs_bc
2728 (bfd
*, char *, int *, const void *, int);
2729 extern char *elfcore_write_arm_vfp
2730 (bfd
*, char *, int *, const void *, int);
2731 extern char *elfcore_write_aarch_tls
2732 (bfd
*, char *, int *, const void *, int);
2733 extern char *elfcore_write_aarch_hw_break
2734 (bfd
*, char *, int *, const void *, int);
2735 extern char *elfcore_write_aarch_hw_watch
2736 (bfd
*, char *, int *, const void *, int);
2737 extern char *elfcore_write_aarch_sve
2738 (bfd
*, char *, int *, const void *, int);
2739 extern char *elfcore_write_aarch_pauth
2740 (bfd
*, char *, int *, const void *, int);
2741 extern char *elfcore_write_arc_v2
2742 (bfd
*, char *, int *, const void *, int);
2743 extern char *elfcore_write_lwpstatus
2744 (bfd
*, char *, int *, long, int, const void *);
2745 extern char *elfcore_write_register_note
2746 (bfd
*, char *, int *, const char *, const void *, int);
2748 /* Internal structure which holds information to be included in the
2749 PRPSINFO section of Linux core files.
2751 This is an "internal" structure in the sense that it should be used
2752 to pass information to BFD (via the `elfcore_write_linux_prpsinfo'
2753 function), so things like endianess shouldn't be an issue. This
2754 structure will eventually be converted in one of the
2755 `elf_external_linux_*' structures and written out to an output bfd
2756 by one of the functions declared below. */
2758 struct elf_internal_linux_prpsinfo
2760 char pr_state
; /* Numeric process state. */
2761 char pr_sname
; /* Char for pr_state. */
2762 char pr_zomb
; /* Zombie. */
2763 char pr_nice
; /* Nice val. */
2764 unsigned long pr_flag
; /* Flags. */
2765 unsigned int pr_uid
;
2766 unsigned int pr_gid
;
2767 int pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
2768 char pr_fname
[16 + 1]; /* Filename of executable. */
2769 char pr_psargs
[80 + 1]; /* Initial part of arg list. */
2772 /* Linux/most 32-bit archs. */
2773 extern char *elfcore_write_linux_prpsinfo32
2774 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2776 /* Linux/most 64-bit archs. */
2777 extern char *elfcore_write_linux_prpsinfo64
2778 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2780 extern bfd
*_bfd_elf32_bfd_from_remote_memory
2781 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2782 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2783 extern bfd
*_bfd_elf64_bfd_from_remote_memory
2784 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2785 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2787 extern bfd_vma
bfd_elf_obj_attr_size (bfd
*);
2788 extern void bfd_elf_set_obj_attr_contents (bfd
*, bfd_byte
*, bfd_vma
);
2789 extern int bfd_elf_get_obj_attr_int (bfd
*, int, unsigned int);
2790 extern void bfd_elf_add_obj_attr_int (bfd
*, int, unsigned int, unsigned int);
2791 #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
2792 bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2793 extern void bfd_elf_add_obj_attr_string (bfd
*, int, unsigned int, const char *);
2794 #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
2795 bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2796 extern void bfd_elf_add_obj_attr_int_string (bfd
*, int, unsigned int,
2797 unsigned int, const char *);
2798 #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
2799 bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
2802 extern char *_bfd_elf_attr_strdup (bfd
*, const char *);
2803 extern void _bfd_elf_copy_obj_attributes (bfd
*, bfd
*);
2804 extern int _bfd_elf_obj_attrs_arg_type (bfd
*, int, unsigned int);
2805 extern void _bfd_elf_parse_attributes (bfd
*, Elf_Internal_Shdr
*);
2806 extern bfd_boolean _bfd_elf_merge_object_attributes
2807 (bfd
*, struct bfd_link_info
*);
2808 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_low (bfd
*, bfd
*, int);
2809 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_list (bfd
*, bfd
*);
2810 extern Elf_Internal_Shdr
*_bfd_elf_single_rel_hdr (asection
*sec
);
2811 extern bfd_boolean
elf_read_notes (bfd
*, file_ptr
, bfd_size_type
, size_t);
2813 extern bfd_boolean _bfd_elf_parse_gnu_properties
2814 (bfd
*, Elf_Internal_Note
*);
2815 extern elf_property
* _bfd_elf_get_property
2816 (bfd
*, unsigned int, unsigned int);
2817 extern bfd
*_bfd_elf_link_setup_gnu_properties
2818 (struct bfd_link_info
*);
2819 extern bfd_size_type _bfd_elf_convert_gnu_property_size
2821 extern bfd_boolean _bfd_elf_convert_gnu_properties
2822 (bfd
*, asection
*, bfd
*, bfd_byte
**, bfd_size_type
*);
2824 /* The linker may need to keep track of the number of relocs that it
2825 decides to copy as dynamic relocs in check_relocs for each symbol.
2826 This is so that it can later discard them if they are found to be
2827 unnecessary. We can store the information in a field extending the
2828 regular ELF linker hash table. */
2830 struct elf_dyn_relocs
2832 struct elf_dyn_relocs
*next
;
2834 /* The input section of the reloc. */
2837 /* Total number of relocs copied for the input section. */
2838 bfd_size_type count
;
2840 /* Number of pc-relative relocs copied for the input section. */
2841 bfd_size_type pc_count
;
2844 extern bfd_boolean _bfd_elf_create_ifunc_sections
2845 (bfd
*, struct bfd_link_info
*);
2846 extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
2847 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2848 struct elf_dyn_relocs
**, bfd_boolean
*, unsigned int,
2849 unsigned int, unsigned int, bfd_boolean
);
2851 extern void elf_append_rela (bfd
*, asection
*, Elf_Internal_Rela
*);
2852 extern void elf_append_rel (bfd
*, asection
*, Elf_Internal_Rela
*);
2854 extern bfd_vma
elf64_r_info (bfd_vma
, bfd_vma
);
2855 extern bfd_vma
elf64_r_sym (bfd_vma
);
2856 extern bfd_vma
elf32_r_info (bfd_vma
, bfd_vma
);
2857 extern bfd_vma
elf32_r_sym (bfd_vma
);
2859 extern bfd_boolean
is_debuginfo_file (bfd
*);
2862 extern bfd_boolean _bfd_elf_init_secondary_reloc_section
2863 (bfd
*, Elf_Internal_Shdr
*, const char *, unsigned int);
2864 extern bfd_boolean _bfd_elf_slurp_secondary_reloc_section
2865 (bfd
*, asection
*, asymbol
**);
2866 extern bfd_boolean _bfd_elf_copy_special_section_fields
2867 (const bfd
*, bfd
*, const Elf_Internal_Shdr
*, Elf_Internal_Shdr
*);
2868 extern bfd_boolean _bfd_elf_write_secondary_reloc_section
2869 (bfd
*, asection
*);
2870 extern unsigned int _bfd_elf_symbol_section_index
2871 (bfd
*, elf_symbol_type
*);
2874 /* Large common section. */
2875 extern asection _bfd_elf_large_com_section
;
2877 /* Hash for local symbol with the first section id, ID, in the input
2878 file and the local symbol index, SYM. */
2879 #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
2880 (((((ID) & 0xffU) << 24) | (((ID) & 0xff00) << 8)) \
2881 ^ (SYM) ^ (((ID) & 0xffff0000U) >> 16))
2883 /* This is the condition under which finish_dynamic_symbol will be called.
2884 If our finish_dynamic_symbol isn't called, we'll need to do something
2885 about initializing any .plt and .got entries in relocate_section. */
2886 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
2888 && ((SHARED) || !(H)->forced_local) \
2889 && ((H)->dynindx != -1 || (H)->forced_local))
2891 /* This macro is to avoid lots of duplicated code in the body
2892 of xxx_relocate_section() in the various elfxx-xxxx.c files. */
2893 #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \
2894 r_symndx, symtab_hdr, sym_hashes, \
2895 h, sec, relocation, \
2896 unresolved_reloc, warned, ignored) \
2899 /* It seems this can happen with erroneous or unsupported \
2900 input (mixing a.out and elf in an archive, for example.) */ \
2901 if (sym_hashes == NULL) \
2904 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \
2906 if (info->wrap_hash != NULL \
2907 && (input_section->flags & SEC_DEBUGGING) != 0) \
2908 h = ((struct elf_link_hash_entry *) \
2909 unwrap_hash_lookup (info, input_bfd, &h->root)); \
2911 while (h->root.type == bfd_link_hash_indirect \
2912 || h->root.type == bfd_link_hash_warning) \
2913 h = (struct elf_link_hash_entry *) h->root.u.i.link; \
2917 unresolved_reloc = FALSE; \
2919 if (h->root.type == bfd_link_hash_defined \
2920 || h->root.type == bfd_link_hash_defweak) \
2922 sec = h->root.u.def.section; \
2924 || sec->output_section == NULL) \
2925 /* Set a flag that will be cleared later if we find a \
2926 relocation value for this symbol. output_section \
2927 is typically NULL for symbols satisfied by a shared \
2929 unresolved_reloc = TRUE; \
2931 relocation = (h->root.u.def.value \
2932 + sec->output_section->vma \
2933 + sec->output_offset); \
2935 else if (h->root.type == bfd_link_hash_undefweak) \
2937 else if (info->unresolved_syms_in_objects == RM_IGNORE \
2938 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \
2940 else if (!bfd_link_relocatable (info)) \
2943 err = (info->unresolved_syms_in_objects == RM_DIAGNOSE && \
2944 !info->warn_unresolved_syms) \
2945 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT; \
2946 (*info->callbacks->undefined_symbol) (info, \
2947 h->root.root.string, \
2950 rel->r_offset, err); \
2953 (void) unresolved_reloc; \
2959 /* This macro is to avoid lots of duplicated code in the body of the
2960 loop over relocations in xxx_relocate_section() in the various
2963 Handle relocations against symbols from removed linkonce sections,
2964 or sections discarded by a linker script. When doing a relocatable
2965 link, we remove such relocations. Otherwise, we just want the
2966 section contents zeroed and avoid any special processing. */
2967 #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
2968 rel, count, relend, \
2969 howto, index, contents) \
2972 _bfd_clear_contents (howto, input_bfd, input_section, \
2973 contents, rel[index].r_offset); \
2975 if (bfd_link_relocatable (info) \
2976 && (input_section->flags & SEC_DEBUGGING)) \
2978 /* Only remove relocations in debug sections since other \
2979 sections may require relocations. */ \
2980 Elf_Internal_Shdr *rel_hdr; \
2982 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
2984 /* Avoid empty output section. */ \
2985 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
2987 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2988 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
2989 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2991 memmove (rel, rel + count, \
2992 (relend - rel - count) * sizeof (*rel)); \
2994 input_section->reloc_count -= count; \
3001 for (i_ = 0; i_ < count; i_++) \
3003 rel[i_].r_info = 0; \
3004 rel[i_].r_addend = 0; \
3010 /* Will a symbol be bound to the definition within the shared
3011 library, if any. A unique symbol can never be bound locally. */
3012 #define SYMBOLIC_BIND(INFO, H) \
3013 (!(H)->unique_global \
3014 && ((INFO)->symbolic \
3015 || (H)->start_stop \
3016 || ((INFO)->dynamic && !(H)->dynamic)))
3018 /* Determine if a section contains CTF data, using its name. */
3019 static inline bfd_boolean
3020 bfd_section_is_ctf (const asection
*sec
)
3022 const char *name
= bfd_section_name (sec
);
3023 return strncmp (name
, ".ctf", 4) == 0 && (name
[4] == 0 || name
[4] == '.');
3029 #endif /* _LIBELF_H_ */