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
;
159 /* Symbol size. NB: All fields starting from here are cleared by
160 _bfd_elf_link_hash_newfunc. */
163 /* Track dynamic relocs copied for this symbol. */
164 struct elf_dyn_relocs
*dyn_relocs
;
166 /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
167 unsigned int type
: 8;
169 /* Symbol st_other value, symbol visibility. */
170 unsigned int other
: 8;
172 /* The symbol's st_target_internal value (see Elf_Internal_Sym). */
173 unsigned int target_internal
: 8;
175 /* Symbol is referenced by a non-shared object (other than the object
176 in which it is defined). */
177 unsigned int ref_regular
: 1;
178 /* Symbol is defined by a non-shared object. */
179 unsigned int def_regular
: 1;
180 /* Symbol is referenced by a shared object. */
181 unsigned int ref_dynamic
: 1;
182 /* Symbol is defined by a shared object. */
183 unsigned int def_dynamic
: 1;
184 /* Symbol has a non-weak reference from a non-shared object (other than
185 the object in which it is defined). */
186 unsigned int ref_regular_nonweak
: 1;
187 /* Dynamic symbol has been adjustd. */
188 unsigned int dynamic_adjusted
: 1;
189 /* Symbol needs a copy reloc. */
190 unsigned int needs_copy
: 1;
191 /* Symbol needs a procedure linkage table entry. */
192 unsigned int needs_plt
: 1;
193 /* Symbol appears in a non-ELF input file. */
194 unsigned int non_elf
: 1;
195 /* Symbol version information. */
196 ENUM_BITFIELD (elf_symbol_version
) versioned
: 2;
197 /* Symbol was forced to local scope due to a version script file. */
198 unsigned int forced_local
: 1;
199 /* Symbol was forced to be dynamic due to a version script file. */
200 unsigned int dynamic
: 1;
201 /* Symbol was marked during garbage collection. */
202 unsigned int mark
: 1;
203 /* Symbol is referenced by a non-GOT/non-PLT relocation. This is
204 not currently set by all the backends. */
205 unsigned int non_got_ref
: 1;
206 /* Symbol has a definition in a shared object.
207 FIXME: There is no real need for this field if def_dynamic is never
208 cleared and all places that test def_dynamic also test def_regular. */
209 unsigned int dynamic_def
: 1;
210 /* Symbol has a non-weak reference from a shared object. */
211 unsigned int ref_dynamic_nonweak
: 1;
212 /* Symbol is referenced with a relocation where C/C++ pointer equality
214 unsigned int pointer_equality_needed
: 1;
215 /* Symbol is a unique global symbol. */
216 unsigned int unique_global
: 1;
217 /* Symbol is defined by a shared library with non-default visibility
218 in a read/write section. */
219 unsigned int protected_def
: 1;
220 /* Symbol is __start_SECNAME or __stop_SECNAME to mark section
222 unsigned int start_stop
: 1;
223 /* Symbol is or was a weak defined symbol from a dynamic object with
224 a strong defined symbol alias. U.ALIAS points to a list of aliases,
225 the definition having is_weakalias clear. */
226 unsigned int is_weakalias
: 1;
228 /* String table index in .dynstr if this is a dynamic symbol. */
229 unsigned long dynstr_index
;
233 /* Points to a circular list of non-function symbol aliases. */
234 struct elf_link_hash_entry
*alias
;
236 /* Hash value of the name computed using the ELF hash function.
237 Used part way through size_dynamic_sections, after we've finished
239 unsigned long elf_hash_value
;
242 /* Version information. */
245 /* This field is used for a symbol which is not defined in a
246 regular object. It points to the version information read in
247 from the dynamic object. */
248 Elf_Internal_Verdef
*verdef
;
249 /* This field is used for a symbol which is defined in a regular
250 object. It is set up in size_dynamic_sections. It points to
251 the version information we should write out for this symbol. */
252 struct bfd_elf_version_tree
*vertree
;
257 /* For __start_SECNAME and __stop_SECNAME symbols, record the first
258 input section whose section name is SECNAME. */
259 asection
*start_stop_section
;
261 /* Vtable information. */
262 struct elf_link_virtual_table_entry
*vtable
;
266 /* Return the strong definition for a weak symbol with aliases. */
268 static inline struct elf_link_hash_entry
*
269 weakdef (struct elf_link_hash_entry
*h
)
271 while (h
->is_weakalias
)
276 /* Will references to this symbol always reference the symbol
278 #define SYMBOL_REFERENCES_LOCAL(INFO, H) \
279 _bfd_elf_symbol_refs_local_p (H, INFO, 0)
281 /* Will _calls_ to this symbol always call the version in this object? */
282 #define SYMBOL_CALLS_LOCAL(INFO, H) \
283 _bfd_elf_symbol_refs_local_p (H, INFO, 1)
285 /* Whether an undefined weak symbol should resolve to its link-time
286 value, even in PIC or PIE objects. */
287 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
288 ((H)->root.type == bfd_link_hash_undefweak \
289 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
290 || (INFO)->dynamic_undefined_weak == 0))
292 /* Common symbols that are turned into definitions don't have the
293 DEF_REGULAR flag set, so they might appear to be undefined.
294 Symbols defined in linker scripts also don't have DEF_REGULAR set. */
295 #define ELF_COMMON_DEF_P(H) \
297 && !(H)->def_dynamic \
298 && (H)->root.type == bfd_link_hash_defined)
300 /* Records local symbols to be emitted in the dynamic symbol table. */
302 struct elf_link_local_dynamic_entry
304 struct elf_link_local_dynamic_entry
*next
;
306 /* The input bfd this symbol came from. */
309 /* The index of the local symbol being copied. */
312 /* The index in the outgoing dynamic symbol table. */
315 /* A copy of the input symbol. */
316 Elf_Internal_Sym isym
;
319 struct elf_link_loaded_list
321 struct elf_link_loaded_list
*next
;
325 /* Structures used by the eh_frame optimization code. */
330 /* If REMOVED == 1, this is the CIE that the FDE originally used.
331 The CIE belongs to the same .eh_frame input section as the FDE.
333 If REMOVED == 0, this is the CIE that we have chosen to use for
334 the output FDE. The CIE's REMOVED field is also 0, but the CIE
335 might belong to a different .eh_frame input section from the FDE.
337 May be NULL to signify that the FDE should be discarded. */
338 struct eh_cie_fde
*cie_inf
;
339 struct eh_cie_fde
*next_for_section
;
342 /* CIEs have three states:
344 - REMOVED && !MERGED: Slated for removal because we haven't yet
345 proven that an FDE needs it. FULL_CIE, if nonnull, points to
346 more detailed information about the CIE.
348 - REMOVED && MERGED: We have merged this CIE with MERGED_WITH,
349 which may not belong to the same input section.
351 - !REMOVED: We have decided to keep this CIE. SEC is the
352 .eh_frame input section that contains the CIE. */
354 struct cie
*full_cie
;
355 struct eh_cie_fde
*merged_with
;
359 /* The offset of the personality data from the start of the CIE,
360 or 0 if the CIE doesn't have any. */
361 unsigned int personality_offset
: 8;
363 /* Length of augmentation. aug_str_len is the length of the
364 string including null terminator. aug_data_len is the length
365 of the rest up to the initial insns. */
366 unsigned int aug_str_len
: 3;
367 unsigned int aug_data_len
: 5;
369 /* True if we have marked relocations associated with this CIE. */
370 unsigned int gc_mark
: 1;
372 /* True if we have decided to turn an absolute LSDA encoding into
373 a PC-relative one. */
374 unsigned int make_lsda_relative
: 1;
376 /* True if we have decided to turn an absolute personality
377 encoding into a PC-relative one. */
378 unsigned int make_per_encoding_relative
: 1;
380 /* True if the CIE contains personality data and if that
381 data uses a PC-relative encoding. Always true when
382 make_per_encoding_relative is. */
383 unsigned int per_encoding_relative
: 1;
385 /* True if the CIE contains personality data aligned to a
386 multiple of eight bytes. */
387 unsigned int per_encoding_aligned8
: 1;
389 /* True if we need to add an 'R' (FDE encoding) entry to the
390 CIE's augmentation data. */
391 unsigned int add_fde_encoding
: 1;
393 /* True if we have merged this CIE with another. */
394 unsigned int merged
: 1;
397 unsigned int pad1
: 9;
400 unsigned int reloc_index
;
403 unsigned int new_offset
;
404 unsigned int fde_encoding
: 8;
405 unsigned int lsda_encoding
: 8;
406 unsigned int lsda_offset
: 8;
408 /* True if this entry represents a CIE, false if it represents an FDE. */
409 unsigned int cie
: 1;
411 /* True if this entry is currently marked for removal. */
412 unsigned int removed
: 1;
414 /* True if we need to add a 'z' (augmentation size) entry to the CIE's
415 augmentation data, and an associated byte to each of the CIE's FDEs. */
416 unsigned int add_augmentation_size
: 1;
418 /* True if we have decided to convert absolute FDE relocations into
419 relative ones. This applies to the first relocation in the FDE,
420 which is against the code that the FDE describes. */
421 unsigned int make_relative
: 1;
424 unsigned int pad1
: 4;
426 unsigned int *set_loc
;
429 struct eh_frame_sec_info
433 struct eh_cie_fde entry
[1];
436 struct eh_frame_array_ent
445 #define DWARF2_EH_HDR 1
446 #define COMPACT_EH_HDR 2
448 /* Endian-neutral code indicating that a function cannot be unwound. */
449 #define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01
451 struct dwarf_eh_frame_hdr_info
454 unsigned int fde_count
;
455 /* TRUE if .eh_frame_hdr should contain the sorted search table.
456 We build it if we successfully read all .eh_frame input sections
457 and recognize them. */
459 struct eh_frame_array_ent
*array
;
462 struct compact_eh_frame_hdr_info
464 unsigned int allocated_entries
;
465 /* eh_frame_entry fragments. */
469 struct eh_frame_hdr_info
472 unsigned int array_count
;
473 bfd_boolean frame_hdr_is_compact
;
476 struct dwarf_eh_frame_hdr_info dwarf
;
477 struct compact_eh_frame_hdr_info compact
;
482 /* Enum used to identify target specific extensions to the elf_obj_tdata
483 and elf_link_hash_table structures. Note the enums deliberately start
484 from 1 so that we can detect an uninitialized field. The generic value
485 is last so that additions to this enum do not need to modify more than
489 AARCH64_ELF_DATA
= 1,
529 struct elf_sym_strtab
531 Elf_Internal_Sym sym
;
532 unsigned long dest_index
;
533 unsigned long destshndx_index
;
536 struct bfd_link_needed_list
538 struct bfd_link_needed_list
*next
;
543 /* ELF linker hash table. */
545 struct elf_link_hash_table
547 struct bfd_link_hash_table root
;
549 /* An identifier used to distinguish different target
550 specific extensions to this structure. */
551 enum elf_target_id hash_table_id
;
553 /* Whether we have created the special dynamic sections required
554 when linking against or generating a shared object. */
555 bfd_boolean dynamic_sections_created
;
557 /* Whether dynamic relocations are present. */
558 bfd_boolean dynamic_relocs
;
560 /* True if this target has relocatable executables, so needs dynamic
562 bfd_boolean is_relocatable_executable
;
564 /* The BFD used to hold special sections created by the linker.
565 This will be the first BFD found which requires these sections to
569 /* The value to use when initialising got.refcount/offset and
570 plt.refcount/offset in an elf_link_hash_entry. Set to zero when
571 the values are refcounts. Set to init_got_offset/init_plt_offset
572 in size_dynamic_sections when the values may be offsets. */
573 union gotplt_union init_got_refcount
;
574 union gotplt_union init_plt_refcount
;
576 /* The value to use for got.refcount/offset and plt.refcount/offset
577 when the values may be offsets. Normally (bfd_vma) -1. */
578 union gotplt_union init_got_offset
;
579 union gotplt_union init_plt_offset
;
581 /* The number of symbols found in the link which is intended for the
582 mandatory DT_SYMTAB tag (.dynsym section) in .dynamic section. */
583 bfd_size_type dynsymcount
;
584 bfd_size_type local_dynsymcount
;
586 /* The string table of dynamic symbols, which becomes the .dynstr
588 struct elf_strtab_hash
*dynstr
;
590 /* The number of symbol strings found in the link which must be put
591 into the .strtab section. */
592 bfd_size_type strtabcount
;
594 /* The array size of the symbol string table, which becomes the
596 bfd_size_type strtabsize
;
598 /* The array of strings, which becomes the .strtab section. */
599 struct elf_sym_strtab
*strtab
;
601 /* The number of buckets in the hash table in the .hash section.
602 This is based on the number of dynamic symbols. */
603 bfd_size_type bucketcount
;
605 /* A linked list of DT_NEEDED names found in dynamic objects
606 included in the link. */
607 struct bfd_link_needed_list
*needed
;
609 /* Sections in the output bfd that provides a section symbol
610 to be used by relocations emitted against local symbols.
611 Most targets will not use data_index_section. */
612 asection
*text_index_section
;
613 asection
*data_index_section
;
615 /* The _GLOBAL_OFFSET_TABLE_ symbol. */
616 struct elf_link_hash_entry
*hgot
;
618 /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */
619 struct elf_link_hash_entry
*hplt
;
621 /* The _DYNAMIC symbol. */
622 struct elf_link_hash_entry
*hdynamic
;
624 /* A pointer to information used to merge SEC_MERGE sections. */
627 /* Used to link stabs in sections. */
628 struct stab_info stab_info
;
630 /* Used by eh_frame code when editing .eh_frame. */
631 struct eh_frame_hdr_info eh_info
;
633 /* A linked list of local symbols to be added to .dynsym. */
634 struct elf_link_local_dynamic_entry
*dynlocal
;
636 /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
637 objects included in the link. */
638 struct bfd_link_needed_list
*runpath
;
640 /* Cached first output tls section and size of PT_TLS segment. */
642 bfd_size_type tls_size
; /* Bytes. */
644 /* A linked list of dynamic BFD's loaded in the link. */
645 struct elf_link_loaded_list
*dyn_loaded
;
647 /* Short-cuts to get to dynamic linker sections. */
656 asection
*sreldynrelro
;
664 /* Look up an entry in an ELF linker hash table. */
666 #define elf_link_hash_lookup(table, string, create, copy, follow) \
667 ((struct elf_link_hash_entry *) \
668 bfd_link_hash_lookup (&(table)->root, (string), (create), \
671 /* Traverse an ELF linker hash table. */
673 #define elf_link_hash_traverse(table, func, info) \
674 (bfd_link_hash_traverse \
676 (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
679 /* Get the ELF linker hash table from a link_info structure. */
681 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
683 #define elf_hash_table_id(table) ((table) -> hash_table_id)
685 /* Returns TRUE if the hash table is a struct elf_link_hash_table. */
686 #define is_elf_hash_table(htab) \
687 (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
689 /* Used by bfd_sym_from_r_symndx to cache a small number of local
691 #define LOCAL_SYM_CACHE_SIZE 32
695 unsigned long indx
[LOCAL_SYM_CACHE_SIZE
];
696 Elf_Internal_Sym sym
[LOCAL_SYM_CACHE_SIZE
];
699 /* Constant information held for an ELF backend. */
701 struct elf_size_info
{
702 unsigned char sizeof_ehdr
, sizeof_phdr
, sizeof_shdr
;
703 unsigned char sizeof_rel
, sizeof_rela
, sizeof_sym
, sizeof_dyn
, sizeof_note
;
705 /* The size of entries in the .hash section. */
706 unsigned char sizeof_hash_entry
;
708 /* The number of internal relocations to allocate per external
710 unsigned char int_rels_per_ext_rel
;
711 /* We use some fixed size arrays. This should be large enough to
712 handle all back-ends. */
713 #define MAX_INT_RELS_PER_EXT_REL 3
715 unsigned char arch_size
, log_file_align
;
716 unsigned char elfclass
, ev_current
;
717 int (*write_out_phdrs
)
718 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
720 (*write_shdrs_and_ehdr
) (bfd
*);
721 bfd_boolean (*checksum_contents
)
722 (bfd
* , void (*) (const void *, size_t, void *), void *);
724 (bfd
*, asection
*, void *);
725 bfd_boolean (*swap_symbol_in
)
726 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
727 void (*swap_symbol_out
)
728 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
729 bfd_boolean (*slurp_reloc_table
)
730 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
731 long (*slurp_symbol_table
)
732 (bfd
*, asymbol
**, bfd_boolean
);
734 (bfd
*, const void *, Elf_Internal_Dyn
*);
736 (bfd
*, const Elf_Internal_Dyn
*, void *);
738 /* This function is called to swap in a REL relocation. If an
739 external relocation corresponds to more than one internal
740 relocation, then all relocations are swapped in at once. */
741 void (*swap_reloc_in
)
742 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
744 /* This function is called to swap out a REL relocation. */
745 void (*swap_reloc_out
)
746 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
748 /* This function is called to swap in a RELA relocation. If an
749 external relocation corresponds to more than one internal
750 relocation, then all relocations are swapped in at once. */
751 void (*swap_reloca_in
)
752 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
754 /* This function is called to swap out a RELA relocation. */
755 void (*swap_reloca_out
)
756 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
759 #define elf_symbol_from(ABFD,S) \
760 (((S)->the_bfd != NULL \
761 && (S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
762 && (S)->the_bfd->tdata.elf_obj_data != 0) \
763 ? (elf_symbol_type *) (S) \
766 enum elf_reloc_type_class
{
768 reloc_class_relative
,
774 struct elf_reloc_cookie
776 Elf_Internal_Rela
*rels
, *rel
, *relend
;
777 Elf_Internal_Sym
*locsyms
;
781 struct elf_link_hash_entry
**sym_hashes
;
783 bfd_boolean bad_symtab
;
786 /* The level of IRIX compatibility we're striving for. */
794 /* Mapping of ELF section names and types. */
795 struct bfd_elf_special_section
798 unsigned int prefix_length
;
799 /* 0 means name must match PREFIX exactly.
800 -1 means name must start with PREFIX followed by an arbitrary string.
801 -2 means name must match PREFIX exactly or consist of PREFIX followed
802 by a dot then anything.
803 > 0 means name must start with the first PREFIX_LENGTH chars of
804 PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */
805 signed int suffix_length
;
810 enum action_discarded
816 typedef asection
* (*elf_gc_mark_hook_fn
)
817 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
818 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
820 enum elf_property_kind
822 /* A new property. */
823 property_unknown
= 0,
824 /* A property ignored by backend. */
826 /* A corrupt property reported by backend. */
828 /* A property should be removed due to property merge. */
830 /* A property which is a number. */
834 typedef struct elf_property
836 unsigned int pr_type
;
837 unsigned int pr_datasz
;
840 /* For property_number, this is a number. */
842 /* Add a new one if elf_property_kind is updated. */
844 enum elf_property_kind pr_kind
;
847 typedef struct elf_property_list
849 struct elf_property_list
*next
;
850 struct elf_property property
;
853 struct bfd_elf_section_reloc_data
;
855 struct elf_backend_data
857 /* The architecture for this backend. */
858 enum bfd_architecture arch
;
860 /* An identifier used to distinguish different target specific
861 extensions to elf_obj_tdata and elf_link_hash_table structures. */
862 enum elf_target_id target_id
;
864 /* The ELF machine code (EM_xxxx) for this backend. */
865 int elf_machine_code
;
870 /* The maximum page size for this backend. */
873 /* The minimum page size for this backend. An input object will not be
874 considered page aligned unless its sections are correctly aligned for
875 pages at least this large. May be smaller than maxpagesize. */
878 /* The common page size for this backend. */
879 bfd_vma commonpagesize
;
881 /* The value of commonpagesize to use when -z relro for this backend. */
882 bfd_vma relropagesize
;
884 /* The BFD flags applied to sections created for dynamic linking. */
885 flagword dynamic_sec_flags
;
887 /* Architecture-specific data for this backend.
888 This is actually a pointer to some type like struct elf_ARCH_data. */
889 const void *arch_data
;
891 /* A function to translate an ELF RELA relocation to a BFD arelent
892 structure. Returns TRUE upon success, FALSE otherwise. */
893 bfd_boolean (*elf_info_to_howto
)
894 (bfd
*, arelent
*, Elf_Internal_Rela
*);
896 /* A function to translate an ELF REL relocation to a BFD arelent
897 structure. Returns TRUE upon success, FALSE otherwise. */
898 bfd_boolean (*elf_info_to_howto_rel
)
899 (bfd
*, arelent
*, Elf_Internal_Rela
*);
901 /* A function to determine whether a symbol is global when
902 partitioning the symbol table into local and global symbols.
903 This should be NULL for most targets, in which case the correct
904 thing will be done. MIPS ELF, at least on the Irix 5, has
905 special requirements. */
906 bfd_boolean (*elf_backend_sym_is_global
)
909 /* The remaining functions are hooks which are called only if they
912 /* A function to permit a backend specific check on whether a
913 particular BFD format is relevant for an object file, and to
914 permit the backend to set any global information it wishes. When
915 this is called elf_elfheader is set, but anything else should be
916 used with caution. If this returns FALSE, the check_format
917 routine will return a bfd_error_wrong_format error. */
918 bfd_boolean (*elf_backend_object_p
)
921 /* A function to do additional symbol processing when reading the
922 ELF symbol table. This is where any processor-specific special
923 section indices are handled. */
924 void (*elf_backend_symbol_processing
)
927 /* A function to do additional symbol processing after reading the
928 entire ELF symbol table. */
929 bfd_boolean (*elf_backend_symbol_table_processing
)
930 (bfd
*, elf_symbol_type
*, unsigned int);
932 /* A function to set the type of the info field. Processor-specific
933 types should be handled here. */
934 int (*elf_backend_get_symbol_type
)
935 (Elf_Internal_Sym
*, int);
937 /* A function to return the linker hash table entry of a symbol that
938 might be satisfied by an archive symbol. */
939 struct elf_link_hash_entry
* (*elf_backend_archive_symbol_lookup
)
940 (bfd
*, struct bfd_link_info
*, const char *);
942 /* Return true if local section symbols should have a non-null st_name.
943 NULL implies false. */
944 bfd_boolean (*elf_backend_name_local_section_symbols
)
947 /* A function to do additional processing on the ELF section header
948 just before writing it out. This is used to set the flags and
949 type fields for some sections, or to actually write out data for
951 bfd_boolean (*elf_backend_section_processing
)
952 (bfd
*, Elf_Internal_Shdr
*);
954 /* A function to handle unusual section types when creating BFD
955 sections from ELF sections. */
956 bfd_boolean (*elf_backend_section_from_shdr
)
957 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
959 /* A function to convert machine dependent ELF section header flags to
960 BFD internal section header flags. */
961 bfd_boolean (*elf_backend_section_flags
)
962 (const Elf_Internal_Shdr
*);
964 /* A function that returns a struct containing ELF section flags and
965 type for the given BFD section. */
966 const struct bfd_elf_special_section
* (*get_sec_type_attr
)
969 /* A function to handle unusual program segment types when creating BFD
970 sections from ELF program segments. */
971 bfd_boolean (*elf_backend_section_from_phdr
)
972 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
974 /* A function to set up the ELF section header for a BFD section in
975 preparation for writing it out. This is where the flags and type
976 fields are set for unusual sections. */
977 bfd_boolean (*elf_backend_fake_sections
)
978 (bfd
*, Elf_Internal_Shdr
*, asection
*);
980 /* A function to get the ELF section index for a BFD section. If
981 this returns TRUE, the section was found. If it is a normal ELF
982 section, *RETVAL should be left unchanged. If it is not a normal
983 ELF section *RETVAL should be set to the SHN_xxxx index. */
984 bfd_boolean (*elf_backend_section_from_bfd_section
)
985 (bfd
*, asection
*, int *retval
);
987 /* If this field is not NULL, it is called by the add_symbols phase
988 of a link just before adding a symbol to the global linker hash
989 table. It may modify any of the fields as it wishes. If *NAME
990 is set to NULL, the symbol will be skipped rather than being
991 added to the hash table. This function is responsible for
992 handling all processor dependent symbol bindings and section
993 indices, and must set at least *FLAGS and *SEC for each processor
994 dependent case; failure to do so will cause a link error. */
995 bfd_boolean (*elf_add_symbol_hook
)
996 (bfd
*abfd
, struct bfd_link_info
*info
, Elf_Internal_Sym
*,
997 const char **name
, flagword
*flags
, asection
**sec
, bfd_vma
*value
);
999 /* If this field is not NULL, it is called by the elf_link_output_sym
1000 phase of a link for each symbol which will appear in the object file.
1001 On error, this function returns 0. 1 is returned when the symbol
1002 should be output, 2 is returned when the symbol should be discarded. */
1003 int (*elf_backend_link_output_symbol_hook
)
1004 (struct bfd_link_info
*info
, const char *, Elf_Internal_Sym
*,
1005 asection
*, struct elf_link_hash_entry
*);
1007 /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
1008 linker the first time it encounters a dynamic object in the link.
1009 This function must create any sections required for dynamic
1010 linking. The ABFD argument is a dynamic object. The .interp,
1011 .dynamic, .dynsym, .dynstr, and .hash functions have already been
1012 created, and this function may modify the section flags if
1013 desired. This function will normally create the .got and .plt
1014 sections, but different backends have different requirements. */
1015 bfd_boolean (*elf_backend_create_dynamic_sections
)
1016 (bfd
*abfd
, struct bfd_link_info
*info
);
1018 /* When creating a shared library, determine whether to omit the
1019 dynamic symbol for the section. */
1020 bfd_boolean (*elf_backend_omit_section_dynsym
)
1021 (bfd
*output_bfd
, struct bfd_link_info
*info
, asection
*osec
);
1023 /* Return TRUE if relocations of targets are compatible to the extent
1024 that CHECK_RELOCS will properly process them. PR 4424. */
1025 bfd_boolean (*relocs_compatible
) (const bfd_target
*, const bfd_target
*);
1027 /* The CHECK_RELOCS function is called by the add_symbols phase of
1028 the ELF backend linker. It is called once for each section with
1029 relocs of an object file, just after the symbols for the object
1030 file have been added to the global linker hash table. The
1031 function must look through the relocs and do any special handling
1032 required. This generally means allocating space in the global
1033 offset table, and perhaps allocating space for a reloc. The
1034 relocs are always passed as Rela structures; if the section
1035 actually uses Rel structures, the r_addend field will always be
1037 bfd_boolean (*check_relocs
)
1038 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
1039 const Elf_Internal_Rela
*relocs
);
1041 /* The CHECK_DIRECTIVES function is called once per input file by
1042 the add_symbols phase of the ELF backend linker. The function
1043 must inspect the bfd and create any additional symbols according
1044 to any custom directives in the bfd. */
1045 bfd_boolean (*check_directives
)
1046 (bfd
*abfd
, struct bfd_link_info
*info
);
1048 /* The NOTICE_AS_NEEDED function is called as the linker is about to
1049 handle an as-needed lib (ACT = notice_as_needed), and after the
1050 linker has decided to keep the lib (ACT = notice_needed) or when
1051 the lib is not needed (ACT = notice_not_needed). */
1052 bfd_boolean (*notice_as_needed
)
1053 (bfd
*abfd
, struct bfd_link_info
*info
, enum notice_asneeded_action act
);
1055 /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
1056 linker for every symbol which is defined by a dynamic object and
1057 referenced by a regular object. This is called after all the
1058 input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
1059 function has been called. The hash table entry should be
1060 bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
1061 defined in a section from a dynamic object. Dynamic object
1062 sections are not included in the final link, and this function is
1063 responsible for changing the value to something which the rest of
1064 the link can deal with. This will normally involve adding an
1065 entry to the .plt or .got or some such section, and setting the
1066 symbol to point to that. */
1067 bfd_boolean (*elf_backend_adjust_dynamic_symbol
)
1068 (struct bfd_link_info
*info
, struct elf_link_hash_entry
*h
);
1070 /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
1071 after all the linker input files have been seen but before the
1072 section sizes have been set. This is called after
1073 ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */
1074 bfd_boolean (*elf_backend_always_size_sections
)
1075 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1077 /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
1078 linker after all the linker input files have been seen but before
1079 the sections sizes have been set. This is called after
1080 ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
1081 It is only called when linking against a dynamic object. It must
1082 set the sizes of the dynamic sections, and may fill in their
1083 contents as well. The generic ELF linker can handle the .dynsym,
1084 .dynstr and .hash sections. This function must handle the
1085 .interp section and any sections created by the
1086 CREATE_DYNAMIC_SECTIONS entry point. */
1087 bfd_boolean (*elf_backend_size_dynamic_sections
)
1088 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1090 /* The STRIP_ZERO_SIZED_DYNAMIC_SECTIONS function is called by the
1091 ELF backend linker to strip zero-sized dynamic sections after
1092 the section sizes have been set. */
1093 bfd_boolean (*elf_backend_strip_zero_sized_dynamic_sections
)
1094 (struct bfd_link_info
*info
);
1096 /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections
1097 we keep to use as a base for relocs and symbols. */
1098 void (*elf_backend_init_index_section
)
1099 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1101 /* The RELOCATE_SECTION function is called by the ELF backend linker
1102 to handle the relocations for a section.
1104 The relocs are always passed as Rela structures; if the section
1105 actually uses Rel structures, the r_addend field will always be
1108 This function is responsible for adjust the section contents as
1109 necessary, and (if using Rela relocs and generating a
1110 relocatable output file) adjusting the reloc addend as
1113 This function does not have to worry about setting the reloc
1114 address or the reloc symbol index.
1116 LOCAL_SYMS is a pointer to the swapped in local symbols.
1118 LOCAL_SECTIONS is an array giving the section in the input file
1119 corresponding to the st_shndx field of each local symbol.
1121 The global hash table entry for the global symbols can be found
1122 via elf_sym_hashes (input_bfd).
1124 When generating relocatable output, this function must handle
1125 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1126 going to be the section symbol corresponding to the output
1127 section, which means that the addend must be adjusted
1130 Returns FALSE on error, TRUE on success, 2 if successful and
1131 relocations should be written for this section. */
1132 int (*elf_backend_relocate_section
)
1133 (bfd
*output_bfd
, struct bfd_link_info
*info
, bfd
*input_bfd
,
1134 asection
*input_section
, bfd_byte
*contents
, Elf_Internal_Rela
*relocs
,
1135 Elf_Internal_Sym
*local_syms
, asection
**local_sections
);
1137 /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
1138 linker just before it writes a symbol out to the .dynsym section.
1139 The processor backend may make any required adjustment to the
1140 symbol. It may also take the opportunity to set contents of the
1141 dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
1142 all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
1143 on those symbols which are defined by a dynamic object. */
1144 bfd_boolean (*elf_backend_finish_dynamic_symbol
)
1145 (bfd
*output_bfd
, struct bfd_link_info
*info
,
1146 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*sym
);
1148 /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
1149 linker just before it writes all the dynamic sections out to the
1150 output file. The FINISH_DYNAMIC_SYMBOL will have been called on
1151 all dynamic symbols. */
1152 bfd_boolean (*elf_backend_finish_dynamic_sections
)
1153 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1155 /* A function to do any beginning processing needed for the ELF file
1156 before building the ELF headers and computing file positions. */
1157 void (*elf_backend_begin_write_processing
)
1158 (bfd
*, struct bfd_link_info
*);
1160 /* A function to do any final processing needed for the ELF file
1161 before writing it out. */
1162 bfd_boolean (*elf_backend_final_write_processing
)
1165 /* This function is called by get_program_header_size. It should
1166 return the number of additional program segments which this BFD
1167 will need. It should return -1 on error. */
1168 int (*elf_backend_additional_program_headers
)
1169 (bfd
*, struct bfd_link_info
*);
1171 /* This function is called to modify an existing segment map in a
1172 backend specific fashion. */
1173 bfd_boolean (*elf_backend_modify_segment_map
)
1174 (bfd
*, struct bfd_link_info
*);
1176 /* This function is called to modify program headers just before
1177 they are written. */
1178 bfd_boolean (*elf_backend_modify_headers
)
1179 (bfd
*, struct bfd_link_info
*);
1181 /* This function is called to see if the PHDR header should be
1182 checked for validity. */
1183 bfd_boolean (*elf_backend_allow_non_load_phdr
)
1184 (bfd
*, const Elf_Internal_Phdr
*, unsigned);
1186 /* This function is called before section garbage collection to
1187 mark entry symbol sections. */
1189 (struct bfd_link_info
*);
1191 /* This function is called during section garbage collection to
1192 mark sections that define global symbols. */
1193 bfd_boolean (*gc_mark_dynamic_ref
)
1194 (struct elf_link_hash_entry
*, void *);
1196 /* This function is called during section gc to discover the section a
1197 particular relocation refers to. */
1198 elf_gc_mark_hook_fn gc_mark_hook
;
1200 /* This function, if defined, is called after the first gc marking pass
1201 to allow the backend to mark additional sections. */
1202 bfd_boolean (*gc_mark_extra_sections
)
1203 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
1205 /* This function is called to initialise ELF file header info.
1206 Customised versions can modify things like the OS and ABI version. */
1207 bfd_boolean (*elf_backend_init_file_header
)
1208 (bfd
*, struct bfd_link_info
*);
1210 /* This function, if defined, prints a symbol to file and returns the
1211 name of the symbol to be printed. It should return NULL to fall
1212 back to default symbol printing. */
1213 const char *(*elf_backend_print_symbol_all
)
1214 (bfd
*, void *, asymbol
*);
1216 /* This function, if defined, is called after all local symbols and
1217 global symbols converted to locals are emitted into the symtab
1218 section. It allows the backend to emit special local symbols
1219 not handled in the hash table. */
1220 bfd_boolean (*elf_backend_output_arch_local_syms
)
1221 (bfd
*, struct bfd_link_info
*, void *,
1222 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1223 struct elf_link_hash_entry
*));
1225 /* This function, if defined, is called after all symbols are emitted
1226 into the symtab section. It allows the backend to emit special
1227 global symbols not handled in the hash table. */
1228 bfd_boolean (*elf_backend_output_arch_syms
)
1229 (bfd
*, struct bfd_link_info
*, void *,
1230 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1231 struct elf_link_hash_entry
*));
1233 /* Filter what symbols of the output file to include in the import
1234 library if one is created. */
1235 unsigned int (*elf_backend_filter_implib_symbols
)
1236 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
1238 /* Copy any information related to dynamic linking from a pre-existing
1239 symbol to a newly created symbol. Also called to copy flags and
1240 other back-end info to a weakdef, in which case the symbol is not
1241 newly created and plt/got refcounts and dynamic indices should not
1243 void (*elf_backend_copy_indirect_symbol
)
1244 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
1245 struct elf_link_hash_entry
*);
1247 /* Modify any information related to dynamic linking such that the
1248 symbol is not exported. */
1249 void (*elf_backend_hide_symbol
)
1250 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
1252 /* A function to do additional symbol fixup, called by
1253 _bfd_elf_fix_symbol_flags. */
1254 bfd_boolean (*elf_backend_fixup_symbol
)
1255 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
1257 /* Merge the backend specific symbol attribute. */
1258 void (*elf_backend_merge_symbol_attribute
)
1259 (struct elf_link_hash_entry
*, const Elf_Internal_Sym
*, bfd_boolean
,
1262 /* This function, if defined, will return a string containing the
1263 name of a target-specific dynamic tag. */
1264 char *(*elf_backend_get_target_dtag
)
1267 /* Decide whether an undefined symbol is special and can be ignored.
1268 This is the case for OPTIONAL symbols on IRIX. */
1269 bfd_boolean (*elf_backend_ignore_undef_symbol
)
1270 (struct elf_link_hash_entry
*);
1272 /* Emit relocations. Overrides default routine for emitting relocs,
1273 except during a relocatable link, or if all relocs are being emitted. */
1274 bfd_boolean (*elf_backend_emit_relocs
)
1275 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
1276 struct elf_link_hash_entry
**);
1278 /* Update relocations. It is allowed to change the number and the order.
1279 In such a case hashes should be invalidated. */
1280 void (*elf_backend_update_relocs
)
1281 (asection
*, struct bfd_elf_section_reloc_data
*);
1283 /* Count relocations. Not called for relocatable links
1284 or if all relocs are being preserved in the output. */
1285 unsigned int (*elf_backend_count_relocs
)
1286 (struct bfd_link_info
*, asection
*);
1288 /* Count additionals relocations. Called for relocatable links if
1289 additional relocations needs to be created. */
1290 unsigned int (*elf_backend_count_additional_relocs
)
1293 /* Say whether to sort relocs output by ld -r and ld --emit-relocs,
1294 by r_offset. If NULL, default to true. */
1295 bfd_boolean (*sort_relocs_p
)
1298 /* This function, if defined, is called when an NT_PRSTATUS note is found
1300 bfd_boolean (*elf_backend_grok_prstatus
)
1301 (bfd
*, Elf_Internal_Note
*);
1303 /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
1304 note is found in a core file. */
1305 bfd_boolean (*elf_backend_grok_psinfo
)
1306 (bfd
*, Elf_Internal_Note
*);
1308 /* This function, if defined, is called when a "FreeBSD" NT_PRSTATUS
1309 note is found in a core file. */
1310 bfd_boolean (*elf_backend_grok_freebsd_prstatus
)
1311 (bfd
*, Elf_Internal_Note
*);
1313 /* This function, if defined, is called to write a note to a corefile. */
1314 char *(*elf_backend_write_core_note
)
1315 (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...);
1317 /* This function, if defined, is called to convert target-specific
1318 section flag names into hex values. */
1319 flagword (*elf_backend_lookup_section_flags_hook
)
1322 /* This function returns class of a reloc type. */
1323 enum elf_reloc_type_class (*elf_backend_reloc_type_class
)
1324 (const struct bfd_link_info
*, const asection
*, const Elf_Internal_Rela
*);
1326 /* This function, if defined, removes information about discarded functions
1327 from other sections which mention them. */
1328 bfd_boolean (*elf_backend_discard_info
)
1329 (bfd
*, struct elf_reloc_cookie
*, struct bfd_link_info
*);
1331 /* This function, if defined, signals that the function above has removed
1332 the discarded relocations for this section. */
1333 bfd_boolean (*elf_backend_ignore_discarded_relocs
)
1336 /* What to do when ld finds relocations against symbols defined in
1337 discarded sections. */
1338 unsigned int (*action_discarded
)
1341 /* This function returns the width of FDE pointers in bytes, or 0 if
1342 that can't be determined for some reason. The default definition
1343 goes by the bfd's EI_CLASS. */
1344 unsigned int (*elf_backend_eh_frame_address_size
)
1345 (bfd
*, const asection
*);
1347 /* These functions tell elf-eh-frame whether to attempt to turn
1348 absolute or lsda encodings into pc-relative ones. The default
1349 definition enables these transformations. */
1350 bfd_boolean (*elf_backend_can_make_relative_eh_frame
)
1351 (bfd
*, struct bfd_link_info
*, asection
*);
1352 bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame
)
1353 (bfd
*, struct bfd_link_info
*, asection
*);
1355 /* This function returns an encoding after computing the encoded
1356 value (and storing it in ENCODED) for the given OFFSET into OSEC,
1357 to be stored in at LOC_OFFSET into the LOC_SEC input section.
1358 The default definition chooses a 32-bit PC-relative encoding. */
1359 bfd_byte (*elf_backend_encode_eh_address
)
1360 (bfd
*abfd
, struct bfd_link_info
*info
,
1361 asection
*osec
, bfd_vma offset
,
1362 asection
*loc_sec
, bfd_vma loc_offset
,
1365 /* This function, if defined, may write out the given section.
1366 Returns TRUE if it did so and FALSE if the caller should. */
1367 bfd_boolean (*elf_backend_write_section
)
1368 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
1370 /* The level of IRIX compatibility we're striving for.
1371 MIPS ELF specific function. */
1372 irix_compat_t (*elf_backend_mips_irix_compat
)
1375 reloc_howto_type
*(*elf_backend_mips_rtype_to_howto
)
1376 (bfd
*, unsigned int, bfd_boolean
);
1378 /* The swapping table to use when dealing with ECOFF information.
1379 Used for the MIPS ELF .mdebug section. */
1380 const struct ecoff_debug_swap
*elf_backend_ecoff_debug_swap
;
1382 /* This function implements `bfd_elf_bfd_from_remote_memory';
1383 see elf.c, elfcode.h. */
1384 bfd
*(*elf_backend_bfd_from_remote_memory
)
1385 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
1386 int (*target_read_memory
) (bfd_vma vma
, bfd_byte
*myaddr
,
1387 bfd_size_type len
));
1389 bfd_boolean (*elf_backend_core_find_build_id
) (bfd
*, bfd_vma
);
1391 /* This function is used by `_bfd_elf_get_synthetic_symtab';
1393 bfd_vma (*plt_sym_val
) (bfd_vma
, const asection
*, const arelent
*);
1395 /* Is symbol defined in common section? */
1396 bfd_boolean (*common_definition
) (Elf_Internal_Sym
*);
1398 /* Return a common section index for section. */
1399 unsigned int (*common_section_index
) (asection
*);
1401 /* Return a common section for section. */
1402 asection
*(*common_section
) (asection
*);
1404 /* Return TRUE if we can merge 2 definitions. */
1405 bfd_boolean (*merge_symbol
) (struct elf_link_hash_entry
*,
1406 const Elf_Internal_Sym
*, asection
**,
1407 bfd_boolean
, bfd_boolean
,
1408 bfd
*, const asection
*);
1410 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
1411 bfd_boolean (*elf_hash_symbol
) (struct elf_link_hash_entry
*);
1413 /* If non-NULL, called to register the location of XLAT_LOC within
1414 .MIPS.xhash at which real final dynindx for H will be written.
1415 If XLAT_LOC is zero, the symbol is not included in
1416 .MIPS.xhash and no dynindx will be written. */
1417 void (*record_xhash_symbol
)
1418 (struct elf_link_hash_entry
*h
, bfd_vma xlat_loc
);
1420 /* Return TRUE if type is a function symbol type. */
1421 bfd_boolean (*is_function_type
) (unsigned int type
);
1423 /* If the ELF symbol SYM might be a function in SEC, return the
1424 function size and set *CODE_OFF to the function's entry point,
1425 otherwise return zero. */
1426 bfd_size_type (*maybe_function_sym
) (const asymbol
*sym
, asection
*sec
,
1429 /* Given NAME, the name of a relocation section stripped of its
1430 .rel/.rela prefix, return the section in ABFD to which the
1431 relocations apply. */
1432 asection
*(*get_reloc_section
) (bfd
*abfd
, const char *name
);
1434 /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
1435 has a type >= SHT_LOOS. Returns TRUE if the fields were initialised,
1436 FALSE otherwise. Can be called multiple times for a given section,
1437 until it returns TRUE. Most of the times it is called ISECTION will be
1438 set to an input section that might be associated with the output section.
1439 The last time that it is called, ISECTION will be set to NULL. */
1440 bfd_boolean (*elf_backend_copy_special_section_fields
)
1441 (const bfd
*ibfd
, bfd
*obfd
, const Elf_Internal_Shdr
*isection
,
1442 Elf_Internal_Shdr
*osection
);
1444 /* Used to handle bad SHF_LINK_ORDER input. */
1445 void (*link_order_error_handler
) (const char *, ...);
1447 /* Name of the PLT relocation section. */
1448 const char *relplt_name
;
1450 /* Alternate EM_xxxx machine codes for this backend. */
1451 int elf_machine_alt1
;
1452 int elf_machine_alt2
;
1454 const struct elf_size_info
*s
;
1456 /* An array of target specific special sections. */
1457 const struct bfd_elf_special_section
*special_sections
;
1459 /* The size in bytes of the header for the GOT. This includes the
1460 so-called reserved entries on some systems. */
1461 bfd_vma got_header_size
;
1463 /* The size of the GOT entry for the symbol pointed to by H if non-NULL,
1464 otherwise by the local symbol with index SYMNDX in IBFD. */
1465 bfd_vma (*got_elt_size
) (bfd
*, struct bfd_link_info
*,
1466 struct elf_link_hash_entry
*h
,
1467 bfd
*ibfd
, unsigned long symndx
);
1469 /* The vendor name to use for a processor-standard attributes section. */
1470 const char *obj_attrs_vendor
;
1472 /* The section name to use for a processor-standard attributes section. */
1473 const char *obj_attrs_section
;
1475 /* Return 1, 2 or 3 to indicate what type of arguments a
1476 processor-specific tag takes. */
1477 int (*obj_attrs_arg_type
) (int);
1479 /* The section type to use for an attributes section. */
1480 unsigned int obj_attrs_section_type
;
1482 /* This function determines the order in which any attributes are
1483 written. It must be defined for input in the range
1484 LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range
1485 is used in order to make unity easy). The returned value is the
1486 actual tag number to place in the input position. */
1487 int (*obj_attrs_order
) (int);
1489 /* Handle merging unknown attributes; either warn and return TRUE,
1490 or give an error and return FALSE. */
1491 bfd_boolean (*obj_attrs_handle_unknown
) (bfd
*, int);
1493 /* Parse GNU properties. Return the property kind. If the property
1494 is corrupt, issue an error message and return property_corrupt. */
1495 enum elf_property_kind (*parse_gnu_properties
) (bfd
*, unsigned int,
1499 /* Merge GNU properties. Return TRUE if property is updated. */
1500 bfd_boolean (*merge_gnu_properties
) (struct bfd_link_info
*, bfd
*, bfd
*,
1501 elf_property
*, elf_property
*);
1503 /* Set up GNU properties. */
1504 bfd
*(*setup_gnu_properties
) (struct bfd_link_info
*);
1506 /* Fix up GNU properties. */
1507 void (*fixup_gnu_properties
) (struct bfd_link_info
*,
1508 elf_property_list
**);
1510 /* Encoding used for compact EH tables. */
1511 int (*compact_eh_encoding
) (struct bfd_link_info
*);
1513 /* Opcode representing no unwind. */
1514 int (*cant_unwind_opcode
) (struct bfd_link_info
*);
1516 /* Called when emitting an ELF symbol whoes input version had an
1517 ST_SHNDX field set to a value in the range SHN_LOPROC..SHN_HIOS.
1518 Returns the value to be installed in the ST_SHNDX field of the
1519 emitted symbol. If not defined, the value is left unchanged. */
1520 unsigned int (*symbol_section_index
) (bfd
*, elf_symbol_type
*);
1522 /* Called when a section has extra reloc sections. */
1523 bfd_boolean (*init_secondary_reloc_section
) (bfd
*, Elf_Internal_Shdr
*,
1524 const char *, unsigned int);
1526 /* Called when after loading the normal relocs for a section. */
1527 bfd_boolean (*slurp_secondary_relocs
) (bfd
*, asection
*, asymbol
**);
1529 /* Called after writing the normal relocs for a section. */
1530 bfd_boolean (*write_secondary_relocs
) (bfd
*, asection
*);
1532 /* This is non-zero if static TLS segments require a special alignment. */
1533 unsigned static_tls_alignment
;
1535 /* Alignment for the PT_GNU_STACK segment. */
1536 unsigned stack_align
;
1538 /* Flag bits to assign to a section of type SHT_STRTAB. */
1539 unsigned long elf_strtab_flags
;
1541 /* This is TRUE if the linker should act like collect and gather
1542 global constructors and destructors by name. This is TRUE for
1543 MIPS ELF because the Irix 5 tools can not handle the .init
1545 unsigned collect
: 1;
1547 /* This is TRUE if the linker should ignore changes to the type of a
1548 symbol. This is TRUE for MIPS ELF because some Irix 5 objects
1549 record undefined functions as STT_OBJECT although the definitions
1551 unsigned type_change_ok
: 1;
1553 /* Whether the backend may use REL relocations. (Some backends use
1554 both REL and RELA relocations, and this flag is set for those
1556 unsigned may_use_rel_p
: 1;
1558 /* Whether the backend may use RELA relocations. (Some backends use
1559 both REL and RELA relocations, and this flag is set for those
1561 unsigned may_use_rela_p
: 1;
1563 /* Whether the default relocation type is RELA. If a backend with
1564 this flag set wants REL relocations for a particular section,
1565 it must note that explicitly. Similarly, if this flag is clear,
1566 and the backend wants RELA relocations for a particular
1568 unsigned default_use_rela_p
: 1;
1570 /* True if PLT and copy relocations should be RELA by default. */
1571 unsigned rela_plts_and_copies_p
: 1;
1573 /* Set if RELA relocations for a relocatable link can be handled by
1574 generic code. Backends that set this flag need do nothing in the
1575 backend relocate_section routine for relocatable linking. */
1576 unsigned rela_normal
: 1;
1578 /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT
1580 unsigned dtrel_excludes_plt
: 1;
1582 /* TRUE if addresses "naturally" sign extend. This is used when
1583 swapping in from Elf32 when BFD64. */
1584 unsigned sign_extend_vma
: 1;
1586 unsigned want_got_plt
: 1;
1587 unsigned plt_readonly
: 1;
1588 unsigned want_plt_sym
: 1;
1589 unsigned plt_not_loaded
: 1;
1590 unsigned plt_alignment
: 4;
1591 unsigned can_gc_sections
: 1;
1592 unsigned can_refcount
: 1;
1593 unsigned want_got_sym
: 1;
1594 unsigned want_dynbss
: 1;
1595 unsigned want_dynrelro
: 1;
1597 /* Targets which do not support physical addressing often require
1598 that the p_paddr field in the section header to be set to zero.
1599 This field indicates whether this behavior is required. */
1600 unsigned want_p_paddr_set_to_zero
: 1;
1602 /* Target has broken hardware and/or kernel that requires pages not
1603 to be mapped twice with different permissions. */
1604 unsigned no_page_alias
: 1;
1606 /* True if an object file lacking a .note.GNU-stack section
1607 should be assumed to be requesting exec stack. At least one
1608 other file in the link needs to have a .note.GNU-stack section
1609 for a PT_GNU_STACK segment to be created. */
1610 unsigned default_execstack
: 1;
1612 /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize
1613 in length rather than sec->size in length, if sec->rawsize is
1614 non-zero and smaller than sec->size. */
1615 unsigned caches_rawsize
: 1;
1617 /* Address of protected data defined in the shared library may be
1618 external, i.e., due to copy relocation. */
1619 unsigned extern_protected_data
: 1;
1621 /* True if `_bfd_elf_link_renumber_dynsyms' must be called even for
1623 unsigned always_renumber_dynsyms
: 1;
1625 /* True if the 32-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1626 members use a 16-bit data type. */
1627 unsigned linux_prpsinfo32_ugid16
: 1;
1629 /* True if the 64-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1630 members use a 16-bit data type. */
1631 unsigned linux_prpsinfo64_ugid16
: 1;
1634 /* Information about reloc sections associated with a bfd_elf_section_data
1636 struct bfd_elf_section_reloc_data
1638 /* The ELF header for the reloc section associated with this
1640 Elf_Internal_Shdr
*hdr
;
1641 /* The number of relocations currently assigned to HDR. */
1643 /* The ELF section number of the reloc section. Only used for an
1646 /* Used by the backend linker to store the symbol hash table entries
1647 associated with relocs against global symbols. */
1648 struct elf_link_hash_entry
**hashes
;
1651 /* Information stored for each BFD section in an ELF file. This
1652 structure is allocated by elf_new_section_hook. */
1654 struct bfd_elf_section_data
1656 /* The ELF header for this section. */
1657 Elf_Internal_Shdr this_hdr
;
1659 /* INPUT_SECTION_FLAGS if specified in the linker script. */
1660 struct flag_info
*section_flag_info
;
1662 /* Information about the REL and RELA reloc sections associated
1663 with this section, if any. */
1664 struct bfd_elf_section_reloc_data rel
, rela
;
1666 /* The ELF section number of this section. */
1669 /* Used by the backend linker when generating a shared library to
1670 record the dynamic symbol index for a section symbol
1671 corresponding to this section. A value of 0 means that there is
1672 no dynamic symbol for this section. */
1675 /* A pointer to the linked-to section for SHF_LINK_ORDER. */
1676 asection
*linked_to
;
1678 /* A pointer to the swapped relocs. If the section uses REL relocs,
1679 rather than RELA, all the r_addend fields will be zero. This
1680 pointer may be NULL. It is used by the backend linker. */
1681 Elf_Internal_Rela
*relocs
;
1683 /* A pointer to a linked list tracking dynamic relocs copied for
1687 /* A pointer to the bfd section used for dynamic relocs. */
1691 /* Group name, if this section is a member of a group. */
1694 /* Group signature sym, if this is the SHT_GROUP section. */
1695 struct bfd_symbol
*id
;
1698 /* For a member of a group, points to the SHT_GROUP section.
1699 NULL for the SHT_GROUP section itself and non-group sections. */
1700 asection
*sec_group
;
1702 /* A linked list of member sections in the group. Circular when used by
1703 the linker. For the SHT_GROUP section, points at first member. */
1704 asection
*next_in_group
;
1706 /* The FDEs associated with this section. The u.fde.next_in_section
1707 field acts as a chain pointer. */
1708 struct eh_cie_fde
*fde_list
;
1710 /* Link from a text section to its .eh_frame_entry section. */
1711 asection
*eh_frame_entry
;
1713 /* A pointer used for various section optimizations. */
1717 #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
1718 #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
1719 #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type)
1720 #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
1721 #define elf_section_info(sec) (elf_section_data(sec)->this_hdr.sh_info)
1722 #define elf_group_name(sec) (elf_section_data(sec)->group.name)
1723 #define elf_group_id(sec) (elf_section_data(sec)->group.id)
1724 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
1725 #define elf_fde_list(sec) (elf_section_data(sec)->fde_list)
1726 #define elf_sec_group(sec) (elf_section_data(sec)->sec_group)
1727 #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry)
1729 #define xvec_get_elf_backend_data(xvec) \
1730 ((const struct elf_backend_data *) (xvec)->backend_data)
1732 #define get_elf_backend_data(abfd) \
1733 xvec_get_elf_backend_data ((abfd)->xvec)
1735 /* The least object attributes (within an attributes subsection) known
1736 for any target. Some code assumes that the value 0 is not used and
1737 the field for that attribute can instead be used as a marker to
1738 indicate that attributes have been initialized. */
1739 #define LEAST_KNOWN_OBJ_ATTRIBUTE 2
1741 /* The maximum number of known object attributes for any target. */
1742 #define NUM_KNOWN_OBJ_ATTRIBUTES 71
1744 /* The value of an object attribute. The type indicates whether the attribute
1745 holds and integer, a string, or both. It can also indicate that there can
1746 be no default (i.e. all values must be written to file, even zero), or
1747 that the value is in error and should not be written to file. */
1749 typedef struct obj_attribute
1751 #define ATTR_TYPE_FLAG_INT_VAL (1 << 0)
1752 #define ATTR_TYPE_FLAG_STR_VAL (1 << 1)
1753 #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
1754 #define ATTR_TYPE_FLAG_ERROR (1 << 3)
1756 #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
1757 #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
1758 #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
1759 #define ATTR_TYPE_HAS_ERROR(TYPE) ((TYPE) & ATTR_TYPE_FLAG_ERROR)
1766 typedef struct obj_attribute_list
1768 struct obj_attribute_list
*next
;
1771 } obj_attribute_list
;
1773 /* Object attributes may either be defined by the processor ABI, index
1774 OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
1775 (and possibly also processor-specific), index OBJ_ATTR_GNU. */
1776 #define OBJ_ATTR_PROC 0
1777 #define OBJ_ATTR_GNU 1
1778 #define OBJ_ATTR_FIRST OBJ_ATTR_PROC
1779 #define OBJ_ATTR_LAST OBJ_ATTR_GNU
1781 /* The following object attribute tags are taken as generic, for all
1782 targets and for "gnu" where there is no target standard. */
1789 Tag_compatibility
= 32
1792 /* The following struct stores information about every SystemTap section
1793 found in the object file. */
1796 struct sdt_note
*next
;
1801 /* tdata information grabbed from an elf core file. */
1802 struct core_elf_obj_tdata
1811 /* Extra tdata information held for output ELF BFDs. */
1812 struct output_elf_obj_tdata
1814 struct elf_segment_map
*seg_map
;
1815 struct elf_strtab_hash
*strtab_ptr
;
1817 /* STT_SECTION symbols for each section */
1818 asymbol
**section_syms
;
1820 /* Used to determine if PT_GNU_EH_FRAME segment header should be
1822 asection
*eh_frame_hdr
;
1824 /* NT_GNU_BUILD_ID note type info. */
1827 bfd_boolean (*after_write_object_contents
) (bfd
*);
1832 /* Records the result of `get_program_header_size'. */
1833 bfd_size_type program_header_size
;
1835 /* Used when laying out sections. */
1836 file_ptr next_file_pos
;
1838 int num_section_syms
;
1839 unsigned int shstrtab_section
, strtab_section
;
1841 /* Segment flags for the PT_GNU_STACK segment. */
1842 unsigned int stack_flags
;
1844 /* Used to determine if the e_flags field has been initialized */
1845 bfd_boolean flags_init
;
1848 /* Indicate if the bfd contains SHF_GNU_MBIND sections or symbols that
1849 have the STT_GNU_IFUNC symbol type or STB_GNU_UNIQUE binding. Used
1850 to set the osabi field in the ELF header structure. */
1853 elf_gnu_osabi_mbind
= 1 << 0,
1854 elf_gnu_osabi_ifunc
= 1 << 1,
1855 elf_gnu_osabi_unique
= 1 << 2,
1858 typedef struct elf_section_list
1860 Elf_Internal_Shdr hdr
;
1862 struct elf_section_list
* next
;
1865 enum dynamic_lib_link_class
{
1869 DYN_NO_ADD_NEEDED
= 4,
1873 /* Some private data is stashed away for future use using the tdata pointer
1874 in the bfd structure. */
1876 struct elf_obj_tdata
1878 Elf_Internal_Ehdr elf_header
[1]; /* Actual data, but ref like ptr */
1879 Elf_Internal_Shdr
**elf_sect_ptr
;
1880 Elf_Internal_Phdr
*phdr
;
1881 Elf_Internal_Shdr symtab_hdr
;
1882 Elf_Internal_Shdr shstrtab_hdr
;
1883 Elf_Internal_Shdr strtab_hdr
;
1884 Elf_Internal_Shdr dynsymtab_hdr
;
1885 Elf_Internal_Shdr dynstrtab_hdr
;
1886 Elf_Internal_Shdr dynversym_hdr
;
1887 Elf_Internal_Shdr dynverref_hdr
;
1888 Elf_Internal_Shdr dynverdef_hdr
;
1889 elf_section_list
* symtab_shndx_list
;
1890 bfd_vma gp
; /* The gp value */
1891 unsigned int gp_size
; /* The gp size */
1892 unsigned int num_elf_sections
; /* elf_sect_ptr size */
1894 /* A mapping from external symbols to entries in the linker hash
1895 table, used when linking. This is indexed by the symbol index
1896 minus the sh_info field of the symbol table header. */
1897 struct elf_link_hash_entry
**sym_hashes
;
1899 /* Track usage and final offsets of GOT entries for local symbols.
1900 This array is indexed by symbol index. Elements are used
1901 identically to "got" in struct elf_link_hash_entry. */
1904 bfd_signed_vma
*refcounts
;
1906 struct got_entry
**ents
;
1909 /* The linker ELF emulation code needs to let the backend ELF linker
1910 know what filename should be used for a dynamic object if the
1911 dynamic object is found using a search. The emulation code then
1912 sometimes needs to know what name was actually used. Until the
1913 file has been added to the linker symbol table, this field holds
1914 the name the linker wants. After it has been added, it holds the
1915 name actually used, which will be the DT_SONAME entry if there is
1917 const char *dt_name
;
1919 /* The linker emulation needs to know what audit libs
1920 are used by a dynamic object. */
1921 const char *dt_audit
;
1923 /* Used by find_nearest_line entry point. */
1926 /* A place to stash dwarf1 info for this bfd. */
1927 struct dwarf1_debug
*dwarf1_find_line_info
;
1929 /* A place to stash dwarf2 info for this bfd. */
1930 void *dwarf2_find_line_info
;
1932 /* Stash away info for yet another find line/function variant. */
1933 void *elf_find_function_cache
;
1935 /* Number of symbol version definitions we are about to emit. */
1936 unsigned int cverdefs
;
1938 /* Number of symbol version references we are about to emit. */
1939 unsigned int cverrefs
;
1941 /* Symbol version definitions in external objects. */
1942 Elf_Internal_Verdef
*verdef
;
1944 /* Symbol version references to external objects. */
1945 Elf_Internal_Verneed
*verref
;
1947 /* A pointer to the .eh_frame section. */
1948 asection
*eh_frame_section
;
1950 /* Symbol buffer. */
1953 /* List of GNU properties. Will be updated by setup_gnu_properties
1954 after all input GNU properties are merged for output. */
1955 elf_property_list
*properties
;
1957 obj_attribute known_obj_attributes
[2][NUM_KNOWN_OBJ_ATTRIBUTES
];
1958 obj_attribute_list
*other_obj_attributes
[2];
1960 /* Linked-list containing information about every Systemtap section
1961 found in the object file. Each section corresponds to one entry
1963 struct sdt_note
*sdt_note_head
;
1965 Elf_Internal_Shdr
**group_sect_ptr
;
1966 unsigned int num_group
;
1968 /* Index into group_sect_ptr, updated by setup_group when finding a
1969 section's group. Used to optimize subsequent group searches. */
1970 unsigned int group_search_offset
;
1972 unsigned int symtab_section
, dynsymtab_section
;
1973 unsigned int dynversym_section
, dynverdef_section
, dynverref_section
;
1975 /* An identifier used to distinguish different target
1976 specific extensions to this structure. */
1977 ENUM_BITFIELD (elf_target_id
) object_id
: 6;
1979 /* Whether a dyanmic object was specified normally on the linker
1980 command line, or was specified when --as-needed was in effect,
1981 or was found via a DT_NEEDED entry. */
1982 ENUM_BITFIELD (dynamic_lib_link_class
) dyn_lib_class
: 4;
1984 /* Whether the bfd uses OS specific bits that require ELFOSABI_GNU. */
1985 ENUM_BITFIELD (elf_gnu_osabi
) has_gnu_osabi
: 3;
1987 /* Whether if the bfd contains the GNU_PROPERTY_NO_COPY_ON_PROTECTED
1989 unsigned int has_no_copy_on_protected
: 1;
1991 /* Irix 5 often screws up the symbol table, sorting local symbols
1992 after global symbols. This flag is set if the symbol table in
1993 this BFD appears to be screwed up. If it is, we ignore the
1994 sh_info field in the symbol table header, and always read all the
1996 unsigned int bad_symtab
: 1;
1998 /* Information grabbed from an elf core file. */
1999 struct core_elf_obj_tdata
*core
;
2001 /* More information held for output ELF BFDs. */
2002 struct output_elf_obj_tdata
*o
;
2005 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
2007 #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id)
2008 #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size)
2009 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
2010 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
2011 #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections)
2012 #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map)
2013 #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos)
2014 #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr)
2015 #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags)
2016 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr)
2017 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
2018 #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list)
2019 #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section)
2020 #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section)
2021 #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr)
2022 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
2023 #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
2024 #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
2025 #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
2026 #define elf_eh_frame_section(bfd) \
2027 (elf_tdata(bfd) -> eh_frame_section)
2028 #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms)
2029 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms)
2030 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
2031 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
2032 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
2033 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
2034 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
2035 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
2036 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
2037 #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
2038 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
2039 #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit)
2040 #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
2041 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
2042 #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init)
2043 #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes)
2044 #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes)
2045 #define elf_known_obj_attributes_proc(bfd) \
2046 (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC])
2047 #define elf_other_obj_attributes_proc(bfd) \
2048 (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
2049 #define elf_properties(bfd) (elf_tdata (bfd) -> properties)
2050 #define elf_has_no_copy_on_protected(bfd) \
2051 (elf_tdata(bfd) -> has_no_copy_on_protected)
2053 extern void _bfd_elf_swap_verdef_in
2054 (bfd
*, const Elf_External_Verdef
*, Elf_Internal_Verdef
*);
2055 extern void _bfd_elf_swap_verdef_out
2056 (bfd
*, const Elf_Internal_Verdef
*, Elf_External_Verdef
*);
2057 extern void _bfd_elf_swap_verdaux_in
2058 (bfd
*, const Elf_External_Verdaux
*, Elf_Internal_Verdaux
*);
2059 extern void _bfd_elf_swap_verdaux_out
2060 (bfd
*, const Elf_Internal_Verdaux
*, Elf_External_Verdaux
*);
2061 extern void _bfd_elf_swap_verneed_in
2062 (bfd
*, const Elf_External_Verneed
*, Elf_Internal_Verneed
*);
2063 extern void _bfd_elf_swap_verneed_out
2064 (bfd
*, const Elf_Internal_Verneed
*, Elf_External_Verneed
*);
2065 extern void _bfd_elf_swap_vernaux_in
2066 (bfd
*, const Elf_External_Vernaux
*, Elf_Internal_Vernaux
*);
2067 extern void _bfd_elf_swap_vernaux_out
2068 (bfd
*, const Elf_Internal_Vernaux
*, Elf_External_Vernaux
*);
2069 extern void _bfd_elf_swap_versym_in
2070 (bfd
*, const Elf_External_Versym
*, Elf_Internal_Versym
*);
2071 extern void _bfd_elf_swap_versym_out
2072 (bfd
*, const Elf_Internal_Versym
*, Elf_External_Versym
*);
2074 extern unsigned int _bfd_elf_section_from_bfd_section
2075 (bfd
*, asection
*);
2076 extern char *bfd_elf_string_from_elf_section
2077 (bfd
*, unsigned, unsigned);
2078 extern Elf_Internal_Sym
*bfd_elf_get_elf_syms
2079 (bfd
*, Elf_Internal_Shdr
*, size_t, size_t, Elf_Internal_Sym
*, void *,
2080 Elf_External_Sym_Shndx
*);
2081 extern char * bfd_elf_get_str_section (bfd
*, unsigned int);
2082 extern const char *bfd_elf_sym_name
2083 (bfd
*, Elf_Internal_Shdr
*, Elf_Internal_Sym
*, asection
*);
2085 extern bfd_boolean _bfd_elf_copy_private_bfd_data
2087 extern bfd_boolean _bfd_elf_print_private_bfd_data
2089 const char * _bfd_elf_get_symbol_version_string
2090 (bfd
*, asymbol
*, bfd_boolean
, bfd_boolean
*);
2091 extern void bfd_elf_print_symbol
2092 (bfd
*, void *, asymbol
*, bfd_print_symbol_type
);
2094 extern unsigned int _bfd_elf_eh_frame_address_size
2095 (bfd
*, const asection
*);
2096 extern bfd_byte _bfd_elf_encode_eh_address
2097 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*osec
, bfd_vma offset
,
2098 asection
*loc_sec
, bfd_vma loc_offset
, bfd_vma
*encoded
);
2099 extern bfd_boolean _bfd_elf_can_make_relative
2100 (bfd
*input_bfd
, struct bfd_link_info
*info
, asection
*eh_frame_section
);
2102 extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
2103 (const struct bfd_link_info
*, const asection
*,
2104 const Elf_Internal_Rela
*);
2105 extern bfd_vma _bfd_elf_rela_local_sym
2106 (bfd
*, Elf_Internal_Sym
*, asection
**, Elf_Internal_Rela
*);
2107 extern bfd_vma _bfd_elf_rel_local_sym
2108 (bfd
*, Elf_Internal_Sym
*, asection
**, bfd_vma
);
2109 extern bfd_vma _bfd_elf_section_offset
2110 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2112 extern unsigned long bfd_elf_hash
2114 extern unsigned long bfd_elf_gnu_hash
2117 extern bfd_reloc_status_type bfd_elf_generic_reloc
2118 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
2119 extern bfd_boolean bfd_elf_allocate_object
2120 (bfd
*, size_t, enum elf_target_id
);
2121 extern bfd_boolean bfd_elf_make_object
2123 extern bfd_boolean bfd_elf_mkcorefile
2125 extern bfd_boolean _bfd_elf_make_section_from_shdr
2126 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
2127 extern bfd_boolean _bfd_elf_make_section_from_phdr
2128 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
2129 extern struct bfd_hash_entry
*_bfd_elf_link_hash_newfunc
2130 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);
2131 extern struct bfd_link_hash_table
*_bfd_elf_link_hash_table_create
2133 extern void _bfd_elf_link_hash_table_free
2135 extern void _bfd_elf_link_hash_copy_indirect
2136 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2137 struct elf_link_hash_entry
*);
2138 extern void _bfd_elf_link_hash_hide_symbol
2139 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
2140 extern void _bfd_elf_link_hide_symbol
2141 (bfd
*, struct bfd_link_info
*, struct bfd_link_hash_entry
*);
2142 extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
2143 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2144 extern bfd_boolean _bfd_elf_link_hash_table_init
2145 (struct elf_link_hash_table
*, bfd
*,
2146 struct bfd_hash_entry
*(*)
2147 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *),
2148 unsigned int, enum elf_target_id
);
2149 extern bfd_boolean _bfd_elf_slurp_version_tables
2150 (bfd
*, bfd_boolean
);
2151 extern bfd_boolean _bfd_elf_merge_sections
2152 (bfd
*, struct bfd_link_info
*);
2153 extern bfd_boolean _bfd_elf_match_sections_by_type
2154 (bfd
*, const asection
*, bfd
*, const asection
*);
2155 extern bfd_boolean bfd_elf_is_group_section
2156 (bfd
*, const struct bfd_section
*);
2157 extern const char *bfd_elf_group_name
2158 (bfd
*, const struct bfd_section
*);
2159 extern bfd_boolean _bfd_elf_section_already_linked
2160 (bfd
*, asection
*, struct bfd_link_info
*);
2161 extern void bfd_elf_set_group_contents
2162 (bfd
*, asection
*, void *);
2163 extern unsigned int _bfd_elf_filter_global_symbols
2164 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
2165 extern asection
*_bfd_elf_check_kept_section
2166 (asection
*, struct bfd_link_info
*);
2167 #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms
2168 extern void _bfd_elf_copy_link_hash_symbol_type
2169 (bfd
*, struct bfd_link_hash_entry
*, struct bfd_link_hash_entry
*);
2170 extern bfd_boolean _bfd_elf_size_group_sections
2171 (struct bfd_link_info
*);
2172 extern bfd_boolean _bfd_elf_fixup_group_sections
2173 (bfd
*, asection
*);
2174 extern bfd_boolean _bfd_elf_copy_private_header_data
2176 extern bfd_boolean _bfd_elf_copy_private_symbol_data
2177 (bfd
*, asymbol
*, bfd
*, asymbol
*);
2178 #define _bfd_generic_init_private_section_data \
2179 _bfd_elf_init_private_section_data
2180 extern bfd_boolean _bfd_elf_init_private_section_data
2181 (bfd
*, asection
*, bfd
*, asection
*, struct bfd_link_info
*);
2182 extern bfd_boolean _bfd_elf_copy_private_section_data
2183 (bfd
*, asection
*, bfd
*, asection
*);
2184 extern bfd_boolean _bfd_elf_write_object_contents
2186 extern bfd_boolean _bfd_elf_write_corefile_contents
2188 extern bfd_boolean _bfd_elf_set_section_contents
2189 (bfd
*, sec_ptr
, const void *, file_ptr
, bfd_size_type
);
2190 extern long _bfd_elf_get_symtab_upper_bound
2192 extern long _bfd_elf_canonicalize_symtab
2193 (bfd
*, asymbol
**);
2194 extern long _bfd_elf_get_dynamic_symtab_upper_bound
2196 extern long _bfd_elf_canonicalize_dynamic_symtab
2197 (bfd
*, asymbol
**);
2198 extern long _bfd_elf_get_synthetic_symtab
2199 (bfd
*, long, asymbol
**, long, asymbol
**, asymbol
**);
2200 extern long _bfd_elf_get_reloc_upper_bound
2202 extern long _bfd_elf_canonicalize_reloc
2203 (bfd
*, sec_ptr
, arelent
**, asymbol
**);
2204 extern asection
* _bfd_elf_get_dynamic_reloc_section
2205 (bfd
*, asection
*, bfd_boolean
);
2206 extern asection
* _bfd_elf_make_dynamic_reloc_section
2207 (asection
*, bfd
*, unsigned int, bfd
*, bfd_boolean
);
2208 extern long _bfd_elf_get_dynamic_reloc_upper_bound
2210 extern long _bfd_elf_canonicalize_dynamic_reloc
2211 (bfd
*, arelent
**, asymbol
**);
2212 extern asymbol
*_bfd_elf_make_empty_symbol
2214 extern void _bfd_elf_get_symbol_info
2215 (bfd
*, asymbol
*, symbol_info
*);
2216 extern bfd_boolean _bfd_elf_is_local_label_name
2217 (bfd
*, const char *);
2218 extern alent
*_bfd_elf_get_lineno
2220 extern bfd_boolean _bfd_elf_set_arch_mach
2221 (bfd
*, enum bfd_architecture
, unsigned long);
2222 extern bfd_boolean _bfd_elf_find_nearest_line
2223 (bfd
*, asymbol
**, asection
*, bfd_vma
,
2224 const char **, const char **, unsigned int *, unsigned int *);
2225 extern bfd_boolean _bfd_elf_find_line
2226 (bfd
*, asymbol
**, asymbol
*, const char **, unsigned int *);
2227 extern bfd_boolean _bfd_elf_find_inliner_info
2228 (bfd
*, const char **, const char **, unsigned int *);
2229 extern asymbol
*_bfd_elf_find_function
2230 (bfd
*, asymbol
**, asection
*, bfd_vma
, const char **, const char **);
2231 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
2232 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
2233 extern int _bfd_elf_sizeof_headers
2234 (bfd
*, struct bfd_link_info
*);
2235 extern bfd_boolean _bfd_elf_new_section_hook
2236 (bfd
*, asection
*);
2237 extern const struct bfd_elf_special_section
*_bfd_elf_get_special_section
2238 (const char *, const struct bfd_elf_special_section
*, unsigned int);
2239 extern const struct bfd_elf_special_section
*_bfd_elf_get_sec_type_attr
2240 (bfd
*, asection
*);
2242 extern bfd_boolean _bfd_elf_link_hide_sym_by_version
2243 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2245 /* If the target doesn't have reloc handling written yet: */
2246 extern bfd_boolean _bfd_elf_no_info_to_howto
2247 (bfd
*, arelent
*, Elf_Internal_Rela
*);
2249 extern bfd_boolean bfd_section_from_shdr
2250 (bfd
*, unsigned int shindex
);
2251 extern bfd_boolean bfd_section_from_phdr
2252 (bfd
*, Elf_Internal_Phdr
*, int);
2254 extern int _bfd_elf_symbol_from_bfd_symbol
2255 (bfd
*, asymbol
**);
2257 extern Elf_Internal_Sym
*bfd_sym_from_r_symndx
2258 (struct sym_cache
*, bfd
*, unsigned long);
2259 extern asection
*bfd_section_from_elf_index
2260 (bfd
*, unsigned int);
2262 extern struct elf_strtab_hash
* _bfd_elf_strtab_init
2264 extern void _bfd_elf_strtab_free
2265 (struct elf_strtab_hash
*);
2266 extern size_t _bfd_elf_strtab_add
2267 (struct elf_strtab_hash
*, const char *, bfd_boolean
);
2268 extern void _bfd_elf_strtab_addref
2269 (struct elf_strtab_hash
*, size_t);
2270 extern void _bfd_elf_strtab_delref
2271 (struct elf_strtab_hash
*, size_t);
2272 extern unsigned int _bfd_elf_strtab_refcount
2273 (struct elf_strtab_hash
*, size_t);
2274 extern void _bfd_elf_strtab_clear_all_refs
2275 (struct elf_strtab_hash
*);
2276 extern void *_bfd_elf_strtab_save
2277 (struct elf_strtab_hash
*);
2278 extern void _bfd_elf_strtab_restore
2279 (struct elf_strtab_hash
*, void *);
2280 extern bfd_size_type _bfd_elf_strtab_size
2281 (struct elf_strtab_hash
*);
2282 extern bfd_size_type _bfd_elf_strtab_len
2283 (struct elf_strtab_hash
*);
2284 extern bfd_size_type _bfd_elf_strtab_offset
2285 (struct elf_strtab_hash
*, size_t);
2286 extern const char * _bfd_elf_strtab_str
2287 (struct elf_strtab_hash
*, size_t idx
, bfd_size_type
*offset
);
2288 extern bfd_boolean _bfd_elf_strtab_emit
2289 (bfd
*, struct elf_strtab_hash
*);
2290 extern void _bfd_elf_strtab_finalize
2291 (struct elf_strtab_hash
*);
2293 extern bfd_boolean bfd_elf_parse_eh_frame_entries
2294 (bfd
*, struct bfd_link_info
*);
2295 extern bfd_boolean _bfd_elf_parse_eh_frame_entry
2296 (struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2297 extern void _bfd_elf_parse_eh_frame
2298 (bfd
*, struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2299 extern bfd_boolean _bfd_elf_end_eh_frame_parsing
2300 (struct bfd_link_info
*info
);
2302 extern bfd_boolean _bfd_elf_discard_section_eh_frame
2303 (bfd
*, struct bfd_link_info
*, asection
*,
2304 bfd_boolean (*) (bfd_vma
, void *), struct elf_reloc_cookie
*);
2305 extern bfd_boolean _bfd_elf_adjust_eh_frame_global_symbol
2306 (struct elf_link_hash_entry
*, void *);
2307 extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
2308 (bfd
*, struct bfd_link_info
*);
2309 extern bfd_vma _bfd_elf_eh_frame_section_offset
2310 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2311 extern bfd_boolean _bfd_elf_write_section_eh_frame
2312 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2313 bfd_boolean _bfd_elf_write_section_eh_frame_entry
2314 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2315 extern bfd_boolean
_bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info
*);
2316 extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
2317 (bfd
*, struct bfd_link_info
*);
2318 extern bfd_boolean _bfd_elf_eh_frame_present
2319 (struct bfd_link_info
*);
2320 extern bfd_boolean _bfd_elf_eh_frame_entry_present
2321 (struct bfd_link_info
*);
2322 extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
2323 (struct bfd_link_info
*);
2325 extern bfd_boolean
_bfd_elf_hash_symbol (struct elf_link_hash_entry
*);
2327 extern long _bfd_elf_link_lookup_local_dynindx
2328 (struct bfd_link_info
*, bfd
*, long);
2329 extern bfd_boolean _bfd_elf_compute_section_file_positions
2330 (bfd
*, struct bfd_link_info
*);
2331 extern file_ptr _bfd_elf_assign_file_position_for_section
2332 (Elf_Internal_Shdr
*, file_ptr
, bfd_boolean
);
2333 extern bfd_boolean _bfd_elf_modify_headers
2334 (bfd
*, struct bfd_link_info
*);
2336 extern bfd_boolean _bfd_elf_validate_reloc
2339 extern bfd_boolean bfd_elf_record_link_assignment
2340 (bfd
*, struct bfd_link_info
*, const char *, bfd_boolean
,
2342 extern bfd_boolean
bfd_elf_stack_segment_size (bfd
*, struct bfd_link_info
*,
2343 const char *, bfd_vma
);
2344 extern bfd_boolean bfd_elf_size_dynamic_sections
2345 (bfd
*, const char *, const char *, const char *, const char *, const char *,
2346 const char * const *, struct bfd_link_info
*, struct bfd_section
**);
2347 extern bfd_boolean bfd_elf_size_dynsym_hash_dynstr
2348 (bfd
*, struct bfd_link_info
*);
2349 extern bfd_boolean bfd_elf_get_bfd_needed_list
2350 (bfd
*, struct bfd_link_needed_list
**);
2351 extern struct bfd_link_needed_list
*bfd_elf_get_needed_list
2352 (bfd
*, struct bfd_link_info
*);
2353 extern void bfd_elf_set_dt_needed_name
2354 (bfd
*, const char *);
2355 extern const char *bfd_elf_get_dt_soname
2357 extern void bfd_elf_set_dyn_lib_class
2358 (bfd
*, enum dynamic_lib_link_class
);
2359 extern int bfd_elf_get_dyn_lib_class
2361 extern struct bfd_link_needed_list
*bfd_elf_get_runpath_list
2362 (bfd
*, struct bfd_link_info
*);
2363 extern int bfd_elf_discard_info
2364 (bfd
*, struct bfd_link_info
*);
2365 extern unsigned int _bfd_elf_default_action_discarded
2366 (struct bfd_section
*);
2367 extern struct bfd_section
*_bfd_elf_tls_setup
2368 (bfd
*, struct bfd_link_info
*);
2370 extern bfd_boolean _bfd_elf_link_create_dynamic_sections
2371 (bfd
*, struct bfd_link_info
*);
2372 extern bfd_boolean _bfd_elf_omit_section_dynsym_default
2373 (bfd
*, struct bfd_link_info
*, asection
*);
2374 extern bfd_boolean _bfd_elf_omit_section_dynsym_all
2375 (bfd
*, struct bfd_link_info
*, asection
*);
2376 extern bfd_boolean _bfd_elf_create_dynamic_sections
2377 (bfd
*, struct bfd_link_info
*);
2378 extern bfd_boolean _bfd_elf_create_got_section
2379 (bfd
*, struct bfd_link_info
*);
2380 extern asection
*_bfd_elf_section_for_symbol
2381 (struct elf_reloc_cookie
*, unsigned long, bfd_boolean
);
2382 extern struct elf_link_hash_entry
*_bfd_elf_define_linkage_sym
2383 (bfd
*, struct bfd_link_info
*, asection
*, const char *);
2384 extern void _bfd_elf_init_1_index_section
2385 (bfd
*, struct bfd_link_info
*);
2386 extern void _bfd_elf_init_2_index_sections
2387 (bfd
*, struct bfd_link_info
*);
2389 extern bfd_boolean _bfd_elfcore_make_pseudosection
2390 (bfd
*, char *, size_t, ufile_ptr
);
2391 extern char *_bfd_elfcore_strndup
2392 (bfd
*, char *, size_t);
2394 extern Elf_Internal_Rela
*_bfd_elf_link_read_relocs
2395 (bfd
*, asection
*, void *, Elf_Internal_Rela
*, bfd_boolean
);
2397 extern bfd_boolean _bfd_elf_link_output_relocs
2398 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
2399 struct elf_link_hash_entry
**);
2401 extern bfd_boolean _bfd_elf_adjust_dynamic_copy
2402 (struct bfd_link_info
*, struct elf_link_hash_entry
*, asection
*);
2404 extern bfd_boolean _bfd_elf_dynamic_symbol_p
2405 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2407 extern bfd_boolean _bfd_elf_symbol_refs_local_p
2408 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2410 extern bfd_reloc_status_type bfd_elf_perform_complex_relocation
2411 (bfd
*, asection
*, bfd_byte
*, Elf_Internal_Rela
*, bfd_vma
);
2413 extern bfd_boolean _bfd_elf_setup_sections
2416 extern struct bfd_link_hash_entry
*bfd_elf_define_start_stop
2417 (struct bfd_link_info
*, const char *, asection
*);
2419 extern bfd_boolean
_bfd_elf_init_file_header (bfd
*, struct bfd_link_info
*);
2421 extern bfd_boolean
_bfd_elf_final_write_processing (bfd
*);
2423 extern bfd_cleanup bfd_elf32_object_p
2425 extern bfd_cleanup bfd_elf32_core_file_p
2427 extern char *bfd_elf32_core_file_failing_command
2429 extern int bfd_elf32_core_file_failing_signal
2431 extern bfd_boolean bfd_elf32_core_file_matches_executable_p
2433 extern int bfd_elf32_core_file_pid
2435 extern bfd_boolean _bfd_elf32_core_find_build_id
2438 extern bfd_boolean bfd_elf32_swap_symbol_in
2439 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2440 extern void bfd_elf32_swap_symbol_out
2441 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2442 extern void bfd_elf32_swap_reloc_in
2443 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2444 extern void bfd_elf32_swap_reloc_out
2445 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2446 extern void bfd_elf32_swap_reloca_in
2447 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2448 extern void bfd_elf32_swap_reloca_out
2449 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2450 extern void bfd_elf32_swap_phdr_in
2451 (bfd
*, const Elf32_External_Phdr
*, Elf_Internal_Phdr
*);
2452 extern void bfd_elf32_swap_phdr_out
2453 (bfd
*, const Elf_Internal_Phdr
*, Elf32_External_Phdr
*);
2454 extern void bfd_elf32_swap_dyn_in
2455 (bfd
*, const void *, Elf_Internal_Dyn
*);
2456 extern void bfd_elf32_swap_dyn_out
2457 (bfd
*, const Elf_Internal_Dyn
*, void *);
2458 extern long bfd_elf32_slurp_symbol_table
2459 (bfd
*, asymbol
**, bfd_boolean
);
2460 extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
2462 extern int bfd_elf32_write_out_phdrs
2463 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2464 extern bfd_boolean bfd_elf32_checksum_contents
2465 (bfd
* , void (*) (const void *, size_t, void *), void *);
2466 extern void bfd_elf32_write_relocs
2467 (bfd
*, asection
*, void *);
2468 extern bfd_boolean bfd_elf32_slurp_reloc_table
2469 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2471 extern bfd_cleanup bfd_elf64_object_p
2473 extern bfd_cleanup bfd_elf64_core_file_p
2475 extern char *bfd_elf64_core_file_failing_command
2477 extern int bfd_elf64_core_file_failing_signal
2479 extern bfd_boolean bfd_elf64_core_file_matches_executable_p
2481 extern int bfd_elf64_core_file_pid
2483 extern bfd_boolean _bfd_elf64_core_find_build_id
2486 extern bfd_boolean bfd_elf64_swap_symbol_in
2487 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2488 extern void bfd_elf64_swap_symbol_out
2489 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2490 extern void bfd_elf64_swap_reloc_in
2491 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2492 extern void bfd_elf64_swap_reloc_out
2493 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2494 extern void bfd_elf64_swap_reloca_in
2495 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2496 extern void bfd_elf64_swap_reloca_out
2497 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2498 extern void bfd_elf64_swap_phdr_in
2499 (bfd
*, const Elf64_External_Phdr
*, Elf_Internal_Phdr
*);
2500 extern void bfd_elf64_swap_phdr_out
2501 (bfd
*, const Elf_Internal_Phdr
*, Elf64_External_Phdr
*);
2502 extern void bfd_elf64_swap_dyn_in
2503 (bfd
*, const void *, Elf_Internal_Dyn
*);
2504 extern void bfd_elf64_swap_dyn_out
2505 (bfd
*, const Elf_Internal_Dyn
*, void *);
2506 extern long bfd_elf64_slurp_symbol_table
2507 (bfd
*, asymbol
**, bfd_boolean
);
2508 extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
2510 extern int bfd_elf64_write_out_phdrs
2511 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2512 extern bfd_boolean bfd_elf64_checksum_contents
2513 (bfd
* , void (*) (const void *, size_t, void *), void *);
2514 extern void bfd_elf64_write_relocs
2515 (bfd
*, asection
*, void *);
2516 extern bfd_boolean bfd_elf64_slurp_reloc_table
2517 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2519 extern bfd_boolean _bfd_elf_default_relocs_compatible
2520 (const bfd_target
*, const bfd_target
*);
2522 extern bfd_boolean _bfd_elf_relocs_compatible
2523 (const bfd_target
*, const bfd_target
*);
2524 extern bfd_boolean _bfd_elf_notice_as_needed
2525 (bfd
*, struct bfd_link_info
*, enum notice_asneeded_action
);
2527 extern struct elf_link_hash_entry
*_bfd_elf_archive_symbol_lookup
2528 (bfd
*, struct bfd_link_info
*, const char *);
2529 extern bfd_boolean bfd_elf_link_add_symbols
2530 (bfd
*, struct bfd_link_info
*);
2531 extern bfd_boolean _bfd_elf_add_dynamic_entry
2532 (struct bfd_link_info
*, bfd_vma
, bfd_vma
);
2533 extern bfd_boolean _bfd_elf_strip_zero_sized_dynamic_sections
2534 (struct bfd_link_info
*);
2535 extern int bfd_elf_add_dt_needed_tag
2536 (bfd
*, struct bfd_link_info
*);
2537 extern bfd_boolean _bfd_elf_link_check_relocs
2538 (bfd
*, struct bfd_link_info
*);
2540 extern bfd_boolean bfd_elf_link_record_dynamic_symbol
2541 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2543 extern int bfd_elf_link_record_local_dynamic_symbol
2544 (struct bfd_link_info
*, bfd
*, long);
2546 extern bfd_boolean _bfd_elf_close_and_cleanup
2549 extern bfd_boolean _bfd_elf_common_definition
2550 (Elf_Internal_Sym
*);
2552 extern unsigned int _bfd_elf_common_section_index
2555 extern asection
*_bfd_elf_common_section
2558 extern bfd_vma _bfd_elf_default_got_elt_size
2559 (bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd
*,
2562 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
2563 (bfd
*, arelent
*, struct bfd_symbol
*, void *,
2564 asection
*, bfd
*, char **);
2566 extern bfd_boolean bfd_elf_final_link
2567 (bfd
*, struct bfd_link_info
*);
2569 extern void _bfd_elf_gc_keep
2570 (struct bfd_link_info
*info
);
2572 extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
2573 (struct elf_link_hash_entry
*h
, void *inf
);
2575 extern bfd_boolean bfd_elf_gc_sections
2576 (bfd
*, struct bfd_link_info
*);
2578 extern bfd_boolean bfd_elf_gc_record_vtinherit
2579 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2581 extern bfd_boolean bfd_elf_gc_record_vtentry
2582 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2584 extern asection
*_bfd_elf_gc_mark_hook
2585 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
2586 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
2588 extern asection
*_bfd_elf_gc_mark_rsec
2589 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2590 struct elf_reloc_cookie
*, bfd_boolean
*);
2592 extern bfd_boolean _bfd_elf_gc_mark_reloc
2593 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2594 struct elf_reloc_cookie
*);
2596 extern bfd_boolean _bfd_elf_gc_mark_fdes
2597 (struct bfd_link_info
*, asection
*, asection
*, elf_gc_mark_hook_fn
,
2598 struct elf_reloc_cookie
*);
2600 extern bfd_boolean _bfd_elf_gc_mark
2601 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
);
2603 extern bfd_boolean _bfd_elf_gc_mark_extra_sections
2604 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
2606 extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
2607 (bfd
*, struct bfd_link_info
*);
2609 extern bfd_boolean bfd_elf_gc_common_final_link
2610 (bfd
*, struct bfd_link_info
*);
2612 extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
2615 extern struct elf_segment_map
* _bfd_elf_make_dynamic_segment
2616 (bfd
*, asection
*);
2618 extern bfd_boolean _bfd_elf_map_sections_to_segments
2619 (bfd
*, struct bfd_link_info
*);
2621 extern bfd_boolean
_bfd_elf_is_function_type (unsigned int);
2623 extern bfd_size_type
_bfd_elf_maybe_function_sym (const asymbol
*, asection
*,
2626 extern asection
*_bfd_elf_plt_get_reloc_section (bfd
*, const char *);
2628 extern int bfd_elf_get_default_section_type (flagword
);
2630 extern bfd_boolean bfd_elf_lookup_section_flags
2631 (struct bfd_link_info
*, struct flag_info
*, asection
*);
2633 extern Elf_Internal_Phdr
* _bfd_elf_find_segment_containing_section
2634 (bfd
* abfd
, asection
* section
);
2636 /* PowerPC @tls opcode transform/validate. */
2637 extern unsigned int _bfd_elf_ppc_at_tls_transform
2638 (unsigned int, unsigned int);
2639 /* PowerPC @tprel opcode transform/validate. */
2640 extern unsigned int _bfd_elf_ppc_at_tprel_transform
2641 (unsigned int, unsigned int);
2642 /* PowerPC elf_object_p tweak. */
2643 extern bfd_boolean
_bfd_elf_ppc_set_arch (bfd
*);
2644 /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */
2645 extern bfd_boolean _bfd_elf_ppc_merge_fp_attributes
2646 (bfd
*, struct bfd_link_info
*);
2648 /* Return an upper bound on the number of bytes required to store a
2649 copy of ABFD's program header table entries. Return -1 if an error
2650 occurs; bfd_get_error will return an appropriate code. */
2651 extern long bfd_get_elf_phdr_upper_bound
2654 /* Copy ABFD's program header table entries to *PHDRS. The entries
2655 will be stored as an array of Elf_Internal_Phdr structures, as
2656 defined in include/elf/internal.h. To find out how large the
2657 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
2659 Return the number of program header table entries read, or -1 if an
2660 error occurs; bfd_get_error will return an appropriate code. */
2661 extern int bfd_get_elf_phdrs
2662 (bfd
*abfd
, void *phdrs
);
2664 /* Exported interface for writing elf corefile notes. */
2665 extern char *elfcore_write_note
2666 (bfd
*, char *, int *, const char *, int, const void *, int);
2667 extern char *elfcore_write_prpsinfo
2668 (bfd
*, char *, int *, const char *, const char *);
2669 extern char *elfcore_write_prstatus
2670 (bfd
*, char *, int *, long, int, const void *);
2671 extern char * elfcore_write_pstatus
2672 (bfd
*, char *, int *, long, int, const void *);
2673 extern char *elfcore_write_prfpreg
2674 (bfd
*, char *, int *, const void *, int);
2675 extern char *elfcore_write_prxfpreg
2676 (bfd
*, char *, int *, const void *, int);
2677 extern char *elfcore_write_xstatereg
2678 (bfd
*, char *, int *, const void *, int);
2679 extern char *elfcore_write_ppc_vmx
2680 (bfd
*, char *, int *, const void *, int);
2681 extern char *elfcore_write_ppc_vsx
2682 (bfd
*, char *, int *, const void *, int);
2683 extern char *elfcore_write_ppc_tar
2684 (bfd
*, char *, int *, const void *, int);
2685 extern char *elfcore_write_ppc_ppr
2686 (bfd
*, char *, int *, const void *, int);
2687 extern char *elfcore_write_ppc_dscr
2688 (bfd
*, char *, int *, const void *, int);
2689 extern char *elfcore_write_ppc_ebb
2690 (bfd
*, char *, int *, const void *, int);
2691 extern char *elfcore_write_ppc_pmu
2692 (bfd
*, char *, int *, const void *, int);
2693 extern char *elfcore_write_ppc_tm_cgpr
2694 (bfd
*, char *, int *, const void *, int);
2695 extern char *elfcore_write_ppc_tm_cfpr
2696 (bfd
*, char *, int *, const void *, int);
2697 extern char *elfcore_write_ppc_tm_cvmx
2698 (bfd
*, char *, int *, const void *, int);
2699 extern char *elfcore_write_ppc_tm_cvsx
2700 (bfd
*, char *, int *, const void *, int);
2701 extern char *elfcore_write_ppc_tm_spr
2702 (bfd
*, char *, int *, const void *, int);
2703 extern char *elfcore_write_ppc_tm_ctar
2704 (bfd
*, char *, int *, const void *, int);
2705 extern char *elfcore_write_ppc_tm_cppr
2706 (bfd
*, char *, int *, const void *, int);
2707 extern char *elfcore_write_ppc_tm_cdscr
2708 (bfd
*, char *, int *, const void *, int);
2709 extern char *elfcore_write_s390_timer
2710 (bfd
*, char *, int *, const void *, int);
2711 extern char *elfcore_write_s390_todcmp
2712 (bfd
*, char *, int *, const void *, int);
2713 extern char *elfcore_write_s390_todpreg
2714 (bfd
*, char *, int *, const void *, int);
2715 extern char *elfcore_write_s390_ctrs
2716 (bfd
*, char *, int *, const void *, int);
2717 extern char *elfcore_write_s390_prefix
2718 (bfd
*, char *, int *, const void *, int);
2719 extern char *elfcore_write_s390_last_break
2720 (bfd
*, char *, int *, const void *, int);
2721 extern char *elfcore_write_s390_system_call
2722 (bfd
*, char *, int *, const void *, int);
2723 extern char *elfcore_write_s390_tdb
2724 (bfd
*, char *, int *, const void *, int);
2725 extern char *elfcore_write_s390_vxrs_low
2726 (bfd
*, char *, int *, const void *, int);
2727 extern char *elfcore_write_s390_vxrs_high
2728 (bfd
*, char *, int *, const void *, int);
2729 extern char *elfcore_write_s390_gs_cb
2730 (bfd
*, char *, int *, const void *, int);
2731 extern char *elfcore_write_s390_gs_bc
2732 (bfd
*, char *, int *, const void *, int);
2733 extern char *elfcore_write_arm_vfp
2734 (bfd
*, char *, int *, const void *, int);
2735 extern char *elfcore_write_aarch_tls
2736 (bfd
*, char *, int *, const void *, int);
2737 extern char *elfcore_write_aarch_hw_break
2738 (bfd
*, char *, int *, const void *, int);
2739 extern char *elfcore_write_aarch_hw_watch
2740 (bfd
*, char *, int *, const void *, int);
2741 extern char *elfcore_write_aarch_sve
2742 (bfd
*, char *, int *, const void *, int);
2743 extern char *elfcore_write_aarch_pauth
2744 (bfd
*, char *, int *, const void *, int);
2745 extern char *elfcore_write_arc_v2
2746 (bfd
*, char *, int *, const void *, int);
2747 extern char *elfcore_write_lwpstatus
2748 (bfd
*, char *, int *, long, int, const void *);
2749 extern char *elfcore_write_register_note
2750 (bfd
*, char *, int *, const char *, const void *, int);
2752 /* Internal structure which holds information to be included in the
2753 PRPSINFO section of Linux core files.
2755 This is an "internal" structure in the sense that it should be used
2756 to pass information to BFD (via the `elfcore_write_linux_prpsinfo'
2757 function), so things like endianess shouldn't be an issue. This
2758 structure will eventually be converted in one of the
2759 `elf_external_linux_*' structures and written out to an output bfd
2760 by one of the functions declared below. */
2762 struct elf_internal_linux_prpsinfo
2764 char pr_state
; /* Numeric process state. */
2765 char pr_sname
; /* Char for pr_state. */
2766 char pr_zomb
; /* Zombie. */
2767 char pr_nice
; /* Nice val. */
2768 unsigned long pr_flag
; /* Flags. */
2769 unsigned int pr_uid
;
2770 unsigned int pr_gid
;
2771 int pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
2772 char pr_fname
[16 + 1]; /* Filename of executable. */
2773 char pr_psargs
[80 + 1]; /* Initial part of arg list. */
2776 /* Linux/most 32-bit archs. */
2777 extern char *elfcore_write_linux_prpsinfo32
2778 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2780 /* Linux/most 64-bit archs. */
2781 extern char *elfcore_write_linux_prpsinfo64
2782 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2784 extern bfd
*_bfd_elf32_bfd_from_remote_memory
2785 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2786 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2787 extern bfd
*_bfd_elf64_bfd_from_remote_memory
2788 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2789 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2791 extern bfd_vma
bfd_elf_obj_attr_size (bfd
*);
2792 extern void bfd_elf_set_obj_attr_contents (bfd
*, bfd_byte
*, bfd_vma
);
2793 extern int bfd_elf_get_obj_attr_int (bfd
*, int, unsigned int);
2794 extern void bfd_elf_add_obj_attr_int (bfd
*, int, unsigned int, unsigned int);
2795 #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
2796 bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2797 extern void bfd_elf_add_obj_attr_string (bfd
*, int, unsigned int, const char *);
2798 #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
2799 bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2800 extern void bfd_elf_add_obj_attr_int_string (bfd
*, int, unsigned int,
2801 unsigned int, const char *);
2802 #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
2803 bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
2806 extern char *_bfd_elf_attr_strdup (bfd
*, const char *);
2807 extern void _bfd_elf_copy_obj_attributes (bfd
*, bfd
*);
2808 extern int _bfd_elf_obj_attrs_arg_type (bfd
*, int, unsigned int);
2809 extern void _bfd_elf_parse_attributes (bfd
*, Elf_Internal_Shdr
*);
2810 extern bfd_boolean _bfd_elf_merge_object_attributes
2811 (bfd
*, struct bfd_link_info
*);
2812 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_low (bfd
*, bfd
*, int);
2813 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_list (bfd
*, bfd
*);
2814 extern Elf_Internal_Shdr
*_bfd_elf_single_rel_hdr (asection
*sec
);
2815 extern bfd_boolean
elf_read_notes (bfd
*, file_ptr
, bfd_size_type
, size_t);
2817 extern bfd_boolean _bfd_elf_parse_gnu_properties
2818 (bfd
*, Elf_Internal_Note
*);
2819 extern elf_property
* _bfd_elf_get_property
2820 (bfd
*, unsigned int, unsigned int);
2821 extern bfd
*_bfd_elf_link_setup_gnu_properties
2822 (struct bfd_link_info
*);
2823 extern bfd_size_type _bfd_elf_convert_gnu_property_size
2825 extern bfd_boolean _bfd_elf_convert_gnu_properties
2826 (bfd
*, asection
*, bfd
*, bfd_byte
**, bfd_size_type
*);
2828 /* The linker may need to keep track of the number of relocs that it
2829 decides to copy as dynamic relocs in check_relocs for each symbol.
2830 This is so that it can later discard them if they are found to be
2831 unnecessary. We can store the information in a field extending the
2832 regular ELF linker hash table. */
2834 struct elf_dyn_relocs
2836 struct elf_dyn_relocs
*next
;
2838 /* The input section of the reloc. */
2841 /* Total number of relocs copied for the input section. */
2842 bfd_size_type count
;
2844 /* Number of pc-relative relocs copied for the input section. */
2845 bfd_size_type pc_count
;
2848 extern bfd_boolean _bfd_elf_create_ifunc_sections
2849 (bfd
*, struct bfd_link_info
*);
2850 extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
2851 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2852 struct elf_dyn_relocs
**, bfd_boolean
*, unsigned int,
2853 unsigned int, unsigned int, bfd_boolean
);
2855 extern void elf_append_rela (bfd
*, asection
*, Elf_Internal_Rela
*);
2856 extern void elf_append_rel (bfd
*, asection
*, Elf_Internal_Rela
*);
2858 extern bfd_vma
elf64_r_info (bfd_vma
, bfd_vma
);
2859 extern bfd_vma
elf64_r_sym (bfd_vma
);
2860 extern bfd_vma
elf32_r_info (bfd_vma
, bfd_vma
);
2861 extern bfd_vma
elf32_r_sym (bfd_vma
);
2863 extern bfd_boolean
is_debuginfo_file (bfd
*);
2866 extern bfd_boolean _bfd_elf_init_secondary_reloc_section
2867 (bfd
*, Elf_Internal_Shdr
*, const char *, unsigned int);
2868 extern bfd_boolean _bfd_elf_slurp_secondary_reloc_section
2869 (bfd
*, asection
*, asymbol
**);
2870 extern bfd_boolean _bfd_elf_copy_special_section_fields
2871 (const bfd
*, bfd
*, const Elf_Internal_Shdr
*, Elf_Internal_Shdr
*);
2872 extern bfd_boolean _bfd_elf_write_secondary_reloc_section
2873 (bfd
*, asection
*);
2874 extern unsigned int _bfd_elf_symbol_section_index
2875 (bfd
*, elf_symbol_type
*);
2877 extern asection
*_bfd_elf_readonly_dynrelocs
2878 (struct elf_link_hash_entry
*);
2879 extern bfd_boolean _bfd_elf_maybe_set_textrel
2880 (struct elf_link_hash_entry
*, void *);
2882 /* Large common section. */
2883 extern asection _bfd_elf_large_com_section
;
2885 /* Hash for local symbol with the first section id, ID, in the input
2886 file and the local symbol index, SYM. */
2887 #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
2888 (((((ID) & 0xffU) << 24) | (((ID) & 0xff00) << 8)) \
2889 ^ (SYM) ^ (((ID) & 0xffff0000U) >> 16))
2891 /* This is the condition under which finish_dynamic_symbol will be called.
2892 If our finish_dynamic_symbol isn't called, we'll need to do something
2893 about initializing any .plt and .got entries in relocate_section. */
2894 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
2896 && ((SHARED) || !(H)->forced_local) \
2897 && ((H)->dynindx != -1 || (H)->forced_local))
2899 /* This macro is to avoid lots of duplicated code in the body
2900 of xxx_relocate_section() in the various elfxx-xxxx.c files. */
2901 #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \
2902 r_symndx, symtab_hdr, sym_hashes, \
2903 h, sec, relocation, \
2904 unresolved_reloc, warned, ignored) \
2907 /* It seems this can happen with erroneous or unsupported \
2908 input (mixing a.out and elf in an archive, for example.) */ \
2909 if (sym_hashes == NULL) \
2912 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \
2914 if (info->wrap_hash != NULL \
2915 && (input_section->flags & SEC_DEBUGGING) != 0) \
2916 h = ((struct elf_link_hash_entry *) \
2917 unwrap_hash_lookup (info, input_bfd, &h->root)); \
2919 while (h->root.type == bfd_link_hash_indirect \
2920 || h->root.type == bfd_link_hash_warning) \
2921 h = (struct elf_link_hash_entry *) h->root.u.i.link; \
2925 unresolved_reloc = FALSE; \
2927 if (h->root.type == bfd_link_hash_defined \
2928 || h->root.type == bfd_link_hash_defweak) \
2930 sec = h->root.u.def.section; \
2932 || sec->output_section == NULL) \
2933 /* Set a flag that will be cleared later if we find a \
2934 relocation value for this symbol. output_section \
2935 is typically NULL for symbols satisfied by a shared \
2937 unresolved_reloc = TRUE; \
2939 relocation = (h->root.u.def.value \
2940 + sec->output_section->vma \
2941 + sec->output_offset); \
2943 else if (h->root.type == bfd_link_hash_undefweak) \
2945 else if (info->unresolved_syms_in_objects == RM_IGNORE \
2946 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \
2948 else if (!bfd_link_relocatable (info)) \
2951 err = (info->unresolved_syms_in_objects == RM_DIAGNOSE && \
2952 !info->warn_unresolved_syms) \
2953 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT; \
2954 (*info->callbacks->undefined_symbol) (info, \
2955 h->root.root.string, \
2958 rel->r_offset, err); \
2961 (void) unresolved_reloc; \
2967 /* This macro is to avoid lots of duplicated code in the body of the
2968 loop over relocations in xxx_relocate_section() in the various
2971 Handle relocations against symbols from removed linkonce sections,
2972 or sections discarded by a linker script. When doing a relocatable
2973 link, we remove such relocations. Otherwise, we just want the
2974 section contents zeroed and avoid any special processing. */
2975 #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
2976 rel, count, relend, \
2977 howto, index, contents) \
2980 _bfd_clear_contents (howto, input_bfd, input_section, \
2981 contents, rel[index].r_offset); \
2983 if (bfd_link_relocatable (info) \
2984 && (input_section->flags & SEC_DEBUGGING)) \
2986 /* Only remove relocations in debug sections since other \
2987 sections may require relocations. */ \
2988 Elf_Internal_Shdr *rel_hdr; \
2990 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
2992 /* Avoid empty output section. */ \
2993 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
2995 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2996 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
2997 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2999 memmove (rel, rel + count, \
3000 (relend - rel - count) * sizeof (*rel)); \
3002 input_section->reloc_count -= count; \
3009 for (i_ = 0; i_ < count; i_++) \
3011 rel[i_].r_info = 0; \
3012 rel[i_].r_addend = 0; \
3018 /* Will a symbol be bound to the definition within the shared
3019 library, if any. A unique symbol can never be bound locally. */
3020 #define SYMBOLIC_BIND(INFO, H) \
3021 (!(H)->unique_global \
3022 && ((INFO)->symbolic \
3023 || (H)->start_stop \
3024 || ((INFO)->dynamic && !(H)->dynamic)))
3026 /* Determine if a section contains CTF data, using its name. */
3027 static inline bfd_boolean
3028 bfd_section_is_ctf (const asection
*sec
)
3030 const char *name
= bfd_section_name (sec
);
3031 return strncmp (name
, ".ctf", 4) == 0 && (name
[4] == 0 || name
[4] == '.');
3037 #endif /* _LIBELF_H_ */