1 /* BFD back-end data structures for ELF files.
2 Copyright (C) 1992-2019 Free Software Foundation, Inc.
3 Copyright (C) 2019 Advanced Micro Devices, Inc. All rights reserved.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
27 #include "elf/common.h"
28 #include "elf/external.h"
29 #include "elf/internal.h"
36 /* The number of entries in a section is its size divided by the size
37 of a single entry. This is normally only applicable to reloc and
38 symbol table sections.
39 PR 9934: It is possible to have relocations that do not refer to
40 symbols, thus it is also possible to have a relocation section in
41 an object file, but no symbol table. */
42 #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0)
44 /* If size isn't specified as 64 or 32, NAME macro should fail. */
47 #define NAME(x, y) x ## 64 ## _ ## y
50 #define NAME(x, y) x ## 32 ## _ ## y
55 #define NAME(x, y) x ## NOSIZE ## _ ## y
58 #define ElfNAME(X) NAME(Elf,X)
59 #define elfNAME(X) NAME(elf,X)
61 /* Information held for an ELF symbol. The first field is the
62 corresponding asymbol. Every symbol is an ELF file is actually a
63 pointer to this structure, although it is often handled as a
64 pointer to an asymbol. */
70 /* ELF symbol information. */
71 Elf_Internal_Sym internal_elf_sym
;
72 /* Backend specific information. */
75 unsigned int hppa_arg_reloc
;
81 /* Version information. This is from an Elf_Internal_Versym
82 structure in a SHT_GNU_versym section. It is zero if there is no
83 version information. */
84 unsigned short version
;
88 struct elf_strtab_hash
;
94 bfd_signed_vma refcount
;
96 struct got_entry
*glist
;
97 struct plt_entry
*plist
;
100 struct elf_link_virtual_table_entry
102 /* Virtual table entry use information. This array is nominally of size
103 size/sizeof(target_void_pointer), though we have to be able to assume
104 and track a size while the symbol is still undefined. It is indexed
105 via offset/sizeof(target_void_pointer). */
109 /* Virtual table derivation info. */
110 struct elf_link_hash_entry
*parent
;
113 /* ELF symbol version. */
114 enum elf_symbol_version
122 /* ELF linker hash table entries. */
124 struct elf_link_hash_entry
126 struct bfd_link_hash_entry root
;
128 /* Symbol index in output file. This is initialized to -1. It is
129 set to -2 if the symbol is used by a reloc. It is set to -3 if
130 this symbol is defined in a discarded section. */
133 /* Symbol index as a dynamic symbol. Initialized to -1, and remains
134 -1 if this is not a dynamic symbol. */
135 /* ??? Note that this is consistently used as a synonym for tests
136 against whether we can perform various simplifying transformations
137 to the code. (E.g. changing a pc-relative jump to a PLT entry
138 into a pc-relative jump to the target function.) That test, which
139 is often relatively complex, and someplaces wrong or incomplete,
140 should really be replaced by a predicate in elflink.c.
142 End result: this field -1 does not indicate that the symbol is
143 not in the dynamic symbol table, but rather that the symbol is
144 not visible outside this DSO. */
147 /* If this symbol requires an entry in the global offset table, the
148 processor specific backend uses this field to track usage and
149 final offset. Two schemes are supported: The first assumes that
150 a symbol may only have one GOT entry, and uses REFCOUNT until
151 size_dynamic_sections, at which point the contents of the .got is
152 fixed. Afterward, if OFFSET is -1, then the symbol does not
153 require a global offset table entry. The second scheme allows
154 multiple GOT entries per symbol, managed via a linked list
155 pointed to by GLIST. */
156 union gotplt_union got
;
158 /* Same, but tracks a procedure linkage table entry. */
159 union gotplt_union plt
;
164 /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
165 unsigned int type
: 8;
167 /* Symbol st_other value, symbol visibility. */
168 unsigned int other
: 8;
170 /* The symbol's st_target_internal value (see Elf_Internal_Sym). */
171 unsigned int target_internal
: 8;
173 /* Symbol is referenced by a non-shared object (other than the object
174 in which it is defined). */
175 unsigned int ref_regular
: 1;
176 /* Symbol is defined by a non-shared object. */
177 unsigned int def_regular
: 1;
178 /* Symbol is referenced by a shared object. */
179 unsigned int ref_dynamic
: 1;
180 /* Symbol is defined by a shared object. */
181 unsigned int def_dynamic
: 1;
182 /* Symbol has a non-weak reference from a non-shared object (other than
183 the object in which it is defined). */
184 unsigned int ref_regular_nonweak
: 1;
185 /* Dynamic symbol has been adjustd. */
186 unsigned int dynamic_adjusted
: 1;
187 /* Symbol needs a copy reloc. */
188 unsigned int needs_copy
: 1;
189 /* Symbol needs a procedure linkage table entry. */
190 unsigned int needs_plt
: 1;
191 /* Symbol appears in a non-ELF input file. */
192 unsigned int non_elf
: 1;
193 /* Symbol version information. */
194 ENUM_BITFIELD (elf_symbol_version
) versioned
: 2;
195 /* Symbol was forced to local scope due to a version script file. */
196 unsigned int forced_local
: 1;
197 /* Symbol was forced to be dynamic due to a version script file. */
198 unsigned int dynamic
: 1;
199 /* Symbol was marked during garbage collection. */
200 unsigned int mark
: 1;
201 /* Symbol is referenced by a non-GOT/non-PLT relocation. This is
202 not currently set by all the backends. */
203 unsigned int non_got_ref
: 1;
204 /* Symbol has a definition in a shared object.
205 FIXME: There is no real need for this field if def_dynamic is never
206 cleared and all places that test def_dynamic also test def_regular. */
207 unsigned int dynamic_def
: 1;
208 /* Symbol has a non-weak reference from a shared object. */
209 unsigned int ref_dynamic_nonweak
: 1;
210 /* Symbol is referenced with a relocation where C/C++ pointer equality
212 unsigned int pointer_equality_needed
: 1;
213 /* Symbol is a unique global symbol. */
214 unsigned int unique_global
: 1;
215 /* Symbol is defined by a shared library with non-default visibility
216 in a read/write section. */
217 unsigned int protected_def
: 1;
218 /* Symbol is __start_SECNAME or __stop_SECNAME to mark section
220 unsigned int start_stop
: 1;
221 /* Symbol is or was a weak defined symbol from a dynamic object with
222 a strong defined symbol alias. U.ALIAS points to a list of aliases,
223 the definition having is_weakalias clear. */
224 unsigned int is_weakalias
: 1;
226 /* String table index in .dynstr if this is a dynamic symbol. */
227 unsigned long dynstr_index
;
231 /* Points to a circular list of non-function symbol aliases. */
232 struct elf_link_hash_entry
*alias
;
234 /* Hash value of the name computed using the ELF hash function.
235 Used part way through size_dynamic_sections, after we've finished
237 unsigned long elf_hash_value
;
240 /* Version information. */
243 /* This field is used for a symbol which is not defined in a
244 regular object. It points to the version information read in
245 from the dynamic object. */
246 Elf_Internal_Verdef
*verdef
;
247 /* This field is used for a symbol which is defined in a regular
248 object. It is set up in size_dynamic_sections. It points to
249 the version information we should write out for this symbol. */
250 struct bfd_elf_version_tree
*vertree
;
255 /* For __start_SECNAME and __stop_SECNAME symbols, record the first
256 input section whose section name is SECNAME. */
257 asection
*start_stop_section
;
259 /* Vtable information. */
260 struct elf_link_virtual_table_entry
*vtable
;
264 /* Return the strong definition for a weak symbol with aliases. */
266 static inline struct elf_link_hash_entry
*
267 weakdef (struct elf_link_hash_entry
*h
)
269 while (h
->is_weakalias
)
274 /* Will references to this symbol always reference the symbol
276 #define SYMBOL_REFERENCES_LOCAL(INFO, H) \
277 _bfd_elf_symbol_refs_local_p (H, INFO, 0)
279 /* Will _calls_ to this symbol always call the version in this object? */
280 #define SYMBOL_CALLS_LOCAL(INFO, H) \
281 _bfd_elf_symbol_refs_local_p (H, INFO, 1)
283 /* Whether an undefined weak symbol should resolve to its link-time
284 value, even in PIC or PIE objects. */
285 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
286 ((H)->root.type == bfd_link_hash_undefweak \
287 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
288 || (INFO)->dynamic_undefined_weak == 0))
290 /* Common symbols that are turned into definitions don't have the
291 DEF_REGULAR flag set, so they might appear to be undefined.
292 Symbols defined in linker scripts also don't have DEF_REGULAR set. */
293 #define ELF_COMMON_DEF_P(H) \
295 && !(H)->def_dynamic \
296 && (H)->root.type == bfd_link_hash_defined)
298 /* Records local symbols to be emitted in the dynamic symbol table. */
300 struct elf_link_local_dynamic_entry
302 struct elf_link_local_dynamic_entry
*next
;
304 /* The input bfd this symbol came from. */
307 /* The index of the local symbol being copied. */
310 /* The index in the outgoing dynamic symbol table. */
313 /* A copy of the input symbol. */
314 Elf_Internal_Sym isym
;
317 struct elf_link_loaded_list
319 struct elf_link_loaded_list
*next
;
323 /* Structures used by the eh_frame optimization code. */
328 /* If REMOVED == 1, this is the CIE that the FDE originally used.
329 The CIE belongs to the same .eh_frame input section as the FDE.
331 If REMOVED == 0, this is the CIE that we have chosen to use for
332 the output FDE. The CIE's REMOVED field is also 0, but the CIE
333 might belong to a different .eh_frame input section from the FDE.
335 May be NULL to signify that the FDE should be discarded. */
336 struct eh_cie_fde
*cie_inf
;
337 struct eh_cie_fde
*next_for_section
;
340 /* CIEs have three states:
342 - REMOVED && !MERGED: Slated for removal because we haven't yet
343 proven that an FDE needs it. FULL_CIE, if nonnull, points to
344 more detailed information about the CIE.
346 - REMOVED && MERGED: We have merged this CIE with MERGED_WITH,
347 which may not belong to the same input section.
349 - !REMOVED: We have decided to keep this CIE. SEC is the
350 .eh_frame input section that contains the CIE. */
352 struct cie
*full_cie
;
353 struct eh_cie_fde
*merged_with
;
357 /* The offset of the personality data from the start of the CIE,
358 or 0 if the CIE doesn't have any. */
359 unsigned int personality_offset
: 8;
361 /* Length of augmentation. aug_str_len is the length of the
362 string including null terminator. aug_data_len is the length
363 of the rest up to the initial insns. */
364 unsigned int aug_str_len
: 3;
365 unsigned int aug_data_len
: 5;
367 /* True if we have marked relocations associated with this CIE. */
368 unsigned int gc_mark
: 1;
370 /* True if we have decided to turn an absolute LSDA encoding into
371 a PC-relative one. */
372 unsigned int make_lsda_relative
: 1;
374 /* True if we have decided to turn an absolute personality
375 encoding into a PC-relative one. */
376 unsigned int make_per_encoding_relative
: 1;
378 /* True if the CIE contains personality data and if that
379 data uses a PC-relative encoding. Always true when
380 make_per_encoding_relative is. */
381 unsigned int per_encoding_relative
: 1;
383 /* True if the CIE contains personality data aligned to a
384 multiple of eight bytes. */
385 unsigned int per_encoding_aligned8
: 1;
387 /* True if we need to add an 'R' (FDE encoding) entry to the
388 CIE's augmentation data. */
389 unsigned int add_fde_encoding
: 1;
391 /* True if we have merged this CIE with another. */
392 unsigned int merged
: 1;
395 unsigned int pad1
: 9;
398 unsigned int reloc_index
;
401 unsigned int new_offset
;
402 unsigned int fde_encoding
: 8;
403 unsigned int lsda_encoding
: 8;
404 unsigned int lsda_offset
: 8;
406 /* True if this entry represents a CIE, false if it represents an FDE. */
407 unsigned int cie
: 1;
409 /* True if this entry is currently marked for removal. */
410 unsigned int removed
: 1;
412 /* True if we need to add a 'z' (augmentation size) entry to the CIE's
413 augmentation data, and an associated byte to each of the CIE's FDEs. */
414 unsigned int add_augmentation_size
: 1;
416 /* True if we have decided to convert absolute FDE relocations into
417 relative ones. This applies to the first relocation in the FDE,
418 which is against the code that the FDE describes. */
419 unsigned int make_relative
: 1;
422 unsigned int pad1
: 4;
424 unsigned int *set_loc
;
427 struct eh_frame_sec_info
431 struct eh_cie_fde entry
[1];
434 struct eh_frame_array_ent
443 #define DWARF2_EH_HDR 1
444 #define COMPACT_EH_HDR 2
446 /* Endian-neutral code indicating that a function cannot be unwound. */
447 #define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01
449 struct dwarf_eh_frame_hdr_info
452 unsigned int fde_count
;
453 /* TRUE if .eh_frame_hdr should contain the sorted search table.
454 We build it if we successfully read all .eh_frame input sections
455 and recognize them. */
457 struct eh_frame_array_ent
*array
;
460 struct compact_eh_frame_hdr_info
462 unsigned int allocated_entries
;
463 /* eh_frame_entry fragments. */
467 struct eh_frame_hdr_info
470 unsigned int array_count
;
471 bfd_boolean frame_hdr_is_compact
;
474 struct dwarf_eh_frame_hdr_info dwarf
;
475 struct compact_eh_frame_hdr_info compact
;
480 /* Enum used to identify target specific extensions to the elf_obj_tdata
481 and elf_link_hash_table structures. Note the enums deliberately start
482 from 1 so that we can detect an uninitialized field. The generic value
483 is last so that additions to this enum do not need to modify more than
487 AARCH64_ELF_DATA
= 1,
528 struct elf_sym_strtab
530 Elf_Internal_Sym sym
;
531 unsigned long dest_index
;
532 unsigned long destshndx_index
;
535 struct bfd_link_needed_list
537 struct bfd_link_needed_list
*next
;
542 /* ELF linker hash table. */
544 struct elf_link_hash_table
546 struct bfd_link_hash_table root
;
548 /* An identifier used to distinguish different target
549 specific extensions to this structure. */
550 enum elf_target_id hash_table_id
;
552 /* Whether we have created the special dynamic sections required
553 when linking against or generating a shared object. */
554 bfd_boolean dynamic_sections_created
;
556 /* Whether dynamic relocations are present. */
557 bfd_boolean dynamic_relocs
;
559 /* True if this target has relocatable executables, so needs dynamic
561 bfd_boolean is_relocatable_executable
;
563 /* The BFD used to hold special sections created by the linker.
564 This will be the first BFD found which requires these sections to
568 /* The value to use when initialising got.refcount/offset and
569 plt.refcount/offset in an elf_link_hash_entry. Set to zero when
570 the values are refcounts. Set to init_got_offset/init_plt_offset
571 in size_dynamic_sections when the values may be offsets. */
572 union gotplt_union init_got_refcount
;
573 union gotplt_union init_plt_refcount
;
575 /* The value to use for got.refcount/offset and plt.refcount/offset
576 when the values may be offsets. Normally (bfd_vma) -1. */
577 union gotplt_union init_got_offset
;
578 union gotplt_union init_plt_offset
;
580 /* The number of symbols found in the link which is intended for the
581 mandatory DT_SYMTAB tag (.dynsym section) in .dynamic section. */
582 bfd_size_type dynsymcount
;
583 bfd_size_type local_dynsymcount
;
585 /* The string table of dynamic symbols, which becomes the .dynstr
587 struct elf_strtab_hash
*dynstr
;
589 /* The number of symbol strings found in the link which must be put
590 into the .strtab section. */
591 bfd_size_type strtabcount
;
593 /* The array size of the symbol string table, which becomes the
595 bfd_size_type strtabsize
;
597 /* The array of strings, which becomes the .strtab section. */
598 struct elf_sym_strtab
*strtab
;
600 /* The number of buckets in the hash table in the .hash section.
601 This is based on the number of dynamic symbols. */
602 bfd_size_type bucketcount
;
604 /* A linked list of DT_NEEDED names found in dynamic objects
605 included in the link. */
606 struct bfd_link_needed_list
*needed
;
608 /* Sections in the output bfd that provides a section symbol
609 to be used by relocations emitted against local symbols.
610 Most targets will not use data_index_section. */
611 asection
*text_index_section
;
612 asection
*data_index_section
;
614 /* The _GLOBAL_OFFSET_TABLE_ symbol. */
615 struct elf_link_hash_entry
*hgot
;
617 /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */
618 struct elf_link_hash_entry
*hplt
;
620 /* The _DYNAMIC symbol. */
621 struct elf_link_hash_entry
*hdynamic
;
623 /* A pointer to information used to merge SEC_MERGE sections. */
626 /* Used to link stabs in sections. */
627 struct stab_info stab_info
;
629 /* Used by eh_frame code when editing .eh_frame. */
630 struct eh_frame_hdr_info eh_info
;
632 /* A linked list of local symbols to be added to .dynsym. */
633 struct elf_link_local_dynamic_entry
*dynlocal
;
635 /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
636 objects included in the link. */
637 struct bfd_link_needed_list
*runpath
;
639 /* Cached first output tls section and size of PT_TLS segment. */
641 bfd_size_type tls_size
;
643 /* A linked list of BFD's loaded in the link. */
644 struct elf_link_loaded_list
*loaded
;
646 /* Short-cuts to get to dynamic linker sections. */
655 asection
*sreldynrelro
;
663 /* Look up an entry in an ELF linker hash table. */
665 #define elf_link_hash_lookup(table, string, create, copy, follow) \
666 ((struct elf_link_hash_entry *) \
667 bfd_link_hash_lookup (&(table)->root, (string), (create), \
670 /* Traverse an ELF linker hash table. */
672 #define elf_link_hash_traverse(table, func, info) \
673 (bfd_link_hash_traverse \
675 (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
678 /* Get the ELF linker hash table from a link_info structure. */
680 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
682 #define elf_hash_table_id(table) ((table) -> hash_table_id)
684 /* Returns TRUE if the hash table is a struct elf_link_hash_table. */
685 #define is_elf_hash_table(htab) \
686 (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
688 /* Used by bfd_sym_from_r_symndx to cache a small number of local
690 #define LOCAL_SYM_CACHE_SIZE 32
694 unsigned long indx
[LOCAL_SYM_CACHE_SIZE
];
695 Elf_Internal_Sym sym
[LOCAL_SYM_CACHE_SIZE
];
698 /* Constant information held for an ELF backend. */
700 struct elf_size_info
{
701 unsigned char sizeof_ehdr
, sizeof_phdr
, sizeof_shdr
;
702 unsigned char sizeof_rel
, sizeof_rela
, sizeof_sym
, sizeof_dyn
, sizeof_note
;
704 /* The size of entries in the .hash section. */
705 unsigned char sizeof_hash_entry
;
707 /* The number of internal relocations to allocate per external
709 unsigned char int_rels_per_ext_rel
;
710 /* We use some fixed size arrays. This should be large enough to
711 handle all back-ends. */
712 #define MAX_INT_RELS_PER_EXT_REL 3
714 unsigned char arch_size
, log_file_align
;
715 unsigned char elfclass
, ev_current
;
716 int (*write_out_phdrs
)
717 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
719 (*write_shdrs_and_ehdr
) (bfd
*);
720 bfd_boolean (*checksum_contents
)
721 (bfd
* , void (*) (const void *, size_t, void *), void *);
723 (bfd
*, asection
*, void *);
724 bfd_boolean (*swap_symbol_in
)
725 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
726 void (*swap_symbol_out
)
727 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
728 bfd_boolean (*slurp_reloc_table
)
729 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
730 long (*slurp_symbol_table
)
731 (bfd
*, asymbol
**, bfd_boolean
);
733 (bfd
*, const void *, Elf_Internal_Dyn
*);
735 (bfd
*, const Elf_Internal_Dyn
*, void *);
737 /* This function is called to swap in a REL relocation. If an
738 external relocation corresponds to more than one internal
739 relocation, then all relocations are swapped in at once. */
740 void (*swap_reloc_in
)
741 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
743 /* This function is called to swap out a REL relocation. */
744 void (*swap_reloc_out
)
745 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
747 /* This function is called to swap in a RELA relocation. If an
748 external relocation corresponds to more than one internal
749 relocation, then all relocations are swapped in at once. */
750 void (*swap_reloca_in
)
751 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
753 /* This function is called to swap out a RELA relocation. */
754 void (*swap_reloca_out
)
755 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
758 #define elf_symbol_from(ABFD,S) \
759 (((S)->the_bfd != NULL \
760 && (S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
761 && (S)->the_bfd->tdata.elf_obj_data != 0) \
762 ? (elf_symbol_type *) (S) \
765 enum elf_reloc_type_class
{
767 reloc_class_relative
,
773 struct elf_reloc_cookie
775 Elf_Internal_Rela
*rels
, *rel
, *relend
;
776 Elf_Internal_Sym
*locsyms
;
780 struct elf_link_hash_entry
**sym_hashes
;
782 bfd_boolean bad_symtab
;
785 /* The level of IRIX compatibility we're striving for. */
793 /* Mapping of ELF section names and types. */
794 struct bfd_elf_special_section
797 unsigned int prefix_length
;
798 /* 0 means name must match PREFIX exactly.
799 -1 means name must start with PREFIX followed by an arbitrary string.
800 -2 means name must match PREFIX exactly or consist of PREFIX followed
801 by a dot then anything.
802 > 0 means name must start with the first PREFIX_LENGTH chars of
803 PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */
804 signed int suffix_length
;
809 enum action_discarded
815 typedef asection
* (*elf_gc_mark_hook_fn
)
816 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
817 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
819 enum elf_property_kind
821 /* A new property. */
822 property_unknown
= 0,
823 /* A property ignored by backend. */
825 /* A corrupt property reported by backend. */
827 /* A property should be removed due to property merge. */
829 /* A property which is a number. */
833 typedef struct elf_property
835 unsigned int pr_type
;
836 unsigned int pr_datasz
;
839 /* For property_number, this is a number. */
841 /* Add a new one if elf_property_kind is updated. */
843 enum elf_property_kind pr_kind
;
846 typedef struct elf_property_list
848 struct elf_property_list
*next
;
849 struct elf_property property
;
852 struct bfd_elf_section_reloc_data
;
854 struct elf_backend_data
856 /* The architecture for this backend. */
857 enum bfd_architecture arch
;
859 /* An identifier used to distinguish different target specific
860 extensions to elf_obj_tdata and elf_link_hash_table structures. */
861 enum elf_target_id target_id
;
863 /* The ELF machine code (EM_xxxx) for this backend. */
864 int elf_machine_code
;
869 /* The maximum page size for this backend. */
872 /* The minimum page size for this backend. An input object will not be
873 considered page aligned unless its sections are correctly aligned for
874 pages at least this large. May be smaller than maxpagesize. */
877 /* The common page size for this backend. */
878 bfd_vma commonpagesize
;
880 /* The value of commonpagesize to use when -z relro for this backend. */
881 bfd_vma relropagesize
;
883 /* The BFD flags applied to sections created for dynamic linking. */
884 flagword dynamic_sec_flags
;
886 /* Architecture-specific data for this backend.
887 This is actually a pointer to some type like struct elf_ARCH_data. */
888 const void *arch_data
;
890 /* A function to translate an ELF RELA relocation to a BFD arelent
891 structure. Returns TRUE upon success, FALSE otherwise. */
892 bfd_boolean (*elf_info_to_howto
)
893 (bfd
*, arelent
*, Elf_Internal_Rela
*);
895 /* A function to translate an ELF REL relocation to a BFD arelent
896 structure. Returns TRUE upon success, FALSE otherwise. */
897 bfd_boolean (*elf_info_to_howto_rel
)
898 (bfd
*, arelent
*, Elf_Internal_Rela
*);
900 /* A function to determine whether a symbol is global when
901 partitioning the symbol table into local and global symbols.
902 This should be NULL for most targets, in which case the correct
903 thing will be done. MIPS ELF, at least on the Irix 5, has
904 special requirements. */
905 bfd_boolean (*elf_backend_sym_is_global
)
908 /* The remaining functions are hooks which are called only if they
911 /* A function to permit a backend specific check on whether a
912 particular BFD format is relevant for an object file, and to
913 permit the backend to set any global information it wishes. When
914 this is called elf_elfheader is set, but anything else should be
915 used with caution. If this returns FALSE, the check_format
916 routine will return a bfd_error_wrong_format error. */
917 bfd_boolean (*elf_backend_object_p
)
920 /* A function to do additional symbol processing when reading the
921 ELF symbol table. This is where any processor-specific special
922 section indices are handled. */
923 void (*elf_backend_symbol_processing
)
926 /* A function to do additional symbol processing after reading the
927 entire ELF symbol table. */
928 bfd_boolean (*elf_backend_symbol_table_processing
)
929 (bfd
*, elf_symbol_type
*, unsigned int);
931 /* A function to set the type of the info field. Processor-specific
932 types should be handled here. */
933 int (*elf_backend_get_symbol_type
)
934 (Elf_Internal_Sym
*, int);
936 /* A function to return the linker hash table entry of a symbol that
937 might be satisfied by an archive symbol. */
938 struct elf_link_hash_entry
* (*elf_backend_archive_symbol_lookup
)
939 (bfd
*, struct bfd_link_info
*, const char *);
941 /* Return true if local section symbols should have a non-null st_name.
942 NULL implies false. */
943 bfd_boolean (*elf_backend_name_local_section_symbols
)
946 /* A function to do additional processing on the ELF section header
947 just before writing it out. This is used to set the flags and
948 type fields for some sections, or to actually write out data for
950 bfd_boolean (*elf_backend_section_processing
)
951 (bfd
*, Elf_Internal_Shdr
*);
953 /* A function to handle unusual section types when creating BFD
954 sections from ELF sections. */
955 bfd_boolean (*elf_backend_section_from_shdr
)
956 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
958 /* A function to convert machine dependent ELF section header flags to
959 BFD internal section header flags. */
960 bfd_boolean (*elf_backend_section_flags
)
961 (flagword
*, const Elf_Internal_Shdr
*);
963 /* A function that returns a struct containing ELF section flags and
964 type for the given BFD section. */
965 const struct bfd_elf_special_section
* (*get_sec_type_attr
)
968 /* A function to handle unusual program segment types when creating BFD
969 sections from ELF program segments. */
970 bfd_boolean (*elf_backend_section_from_phdr
)
971 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
973 /* A function to set up the ELF section header for a BFD section in
974 preparation for writing it out. This is where the flags and type
975 fields are set for unusual sections. */
976 bfd_boolean (*elf_backend_fake_sections
)
977 (bfd
*, Elf_Internal_Shdr
*, asection
*);
979 /* A function to get the ELF section index for a BFD section. If
980 this returns TRUE, the section was found. If it is a normal ELF
981 section, *RETVAL should be left unchanged. If it is not a normal
982 ELF section *RETVAL should be set to the SHN_xxxx index. */
983 bfd_boolean (*elf_backend_section_from_bfd_section
)
984 (bfd
*, asection
*, int *retval
);
986 /* If this field is not NULL, it is called by the add_symbols phase
987 of a link just before adding a symbol to the global linker hash
988 table. It may modify any of the fields as it wishes. If *NAME
989 is set to NULL, the symbol will be skipped rather than being
990 added to the hash table. This function is responsible for
991 handling all processor dependent symbol bindings and section
992 indices, and must set at least *FLAGS and *SEC for each processor
993 dependent case; failure to do so will cause a link error. */
994 bfd_boolean (*elf_add_symbol_hook
)
995 (bfd
*abfd
, struct bfd_link_info
*info
, Elf_Internal_Sym
*,
996 const char **name
, flagword
*flags
, asection
**sec
, bfd_vma
*value
);
998 /* If this field is not NULL, it is called by the elf_link_output_sym
999 phase of a link for each symbol which will appear in the object file.
1000 On error, this function returns 0. 1 is returned when the symbol
1001 should be output, 2 is returned when the symbol should be discarded. */
1002 int (*elf_backend_link_output_symbol_hook
)
1003 (struct bfd_link_info
*info
, const char *, Elf_Internal_Sym
*,
1004 asection
*, struct elf_link_hash_entry
*);
1006 /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
1007 linker the first time it encounters a dynamic object in the link.
1008 This function must create any sections required for dynamic
1009 linking. The ABFD argument is a dynamic object. The .interp,
1010 .dynamic, .dynsym, .dynstr, and .hash functions have already been
1011 created, and this function may modify the section flags if
1012 desired. This function will normally create the .got and .plt
1013 sections, but different backends have different requirements. */
1014 bfd_boolean (*elf_backend_create_dynamic_sections
)
1015 (bfd
*abfd
, struct bfd_link_info
*info
);
1017 /* When creating a shared library, determine whether to omit the
1018 dynamic symbol for the section. */
1019 bfd_boolean (*elf_backend_omit_section_dynsym
)
1020 (bfd
*output_bfd
, struct bfd_link_info
*info
, asection
*osec
);
1022 /* Return TRUE if relocations of targets are compatible to the extent
1023 that CHECK_RELOCS will properly process them. PR 4424. */
1024 bfd_boolean (*relocs_compatible
) (const bfd_target
*, const bfd_target
*);
1026 /* The CHECK_RELOCS function is called by the add_symbols phase of
1027 the ELF backend linker. It is called once for each section with
1028 relocs of an object file, just after the symbols for the object
1029 file have been added to the global linker hash table. The
1030 function must look through the relocs and do any special handling
1031 required. This generally means allocating space in the global
1032 offset table, and perhaps allocating space for a reloc. The
1033 relocs are always passed as Rela structures; if the section
1034 actually uses Rel structures, the r_addend field will always be
1036 bfd_boolean (*check_relocs
)
1037 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
1038 const Elf_Internal_Rela
*relocs
);
1040 /* The CHECK_DIRECTIVES function is called once per input file by
1041 the add_symbols phase of the ELF backend linker. The function
1042 must inspect the bfd and create any additional symbols according
1043 to any custom directives in the bfd. */
1044 bfd_boolean (*check_directives
)
1045 (bfd
*abfd
, struct bfd_link_info
*info
);
1047 /* The NOTICE_AS_NEEDED function is called as the linker is about to
1048 handle an as-needed lib (ACT = notice_as_needed), and after the
1049 linker has decided to keep the lib (ACT = notice_needed) or when
1050 the lib is not needed (ACT = notice_not_needed). */
1051 bfd_boolean (*notice_as_needed
)
1052 (bfd
*abfd
, struct bfd_link_info
*info
, enum notice_asneeded_action act
);
1054 /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
1055 linker for every symbol which is defined by a dynamic object and
1056 referenced by a regular object. This is called after all the
1057 input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
1058 function has been called. The hash table entry should be
1059 bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
1060 defined in a section from a dynamic object. Dynamic object
1061 sections are not included in the final link, and this function is
1062 responsible for changing the value to something which the rest of
1063 the link can deal with. This will normally involve adding an
1064 entry to the .plt or .got or some such section, and setting the
1065 symbol to point to that. */
1066 bfd_boolean (*elf_backend_adjust_dynamic_symbol
)
1067 (struct bfd_link_info
*info
, struct elf_link_hash_entry
*h
);
1069 /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
1070 after all the linker input files have been seen but before the
1071 section sizes have been set. This is called after
1072 ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */
1073 bfd_boolean (*elf_backend_always_size_sections
)
1074 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1076 /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
1077 linker after all the linker input files have been seen but before
1078 the sections sizes have been set. This is called after
1079 ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
1080 It is only called when linking against a dynamic object. It must
1081 set the sizes of the dynamic sections, and may fill in their
1082 contents as well. The generic ELF linker can handle the .dynsym,
1083 .dynstr and .hash sections. This function must handle the
1084 .interp section and any sections created by the
1085 CREATE_DYNAMIC_SECTIONS entry point. */
1086 bfd_boolean (*elf_backend_size_dynamic_sections
)
1087 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1089 /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections
1090 we keep to use as a base for relocs and symbols. */
1091 void (*elf_backend_init_index_section
)
1092 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1094 /* The RELOCATE_SECTION function is called by the ELF backend linker
1095 to handle the relocations for a section.
1097 The relocs are always passed as Rela structures; if the section
1098 actually uses Rel structures, the r_addend field will always be
1101 This function is responsible for adjust the section contents as
1102 necessary, and (if using Rela relocs and generating a
1103 relocatable output file) adjusting the reloc addend as
1106 This function does not have to worry about setting the reloc
1107 address or the reloc symbol index.
1109 LOCAL_SYMS is a pointer to the swapped in local symbols.
1111 LOCAL_SECTIONS is an array giving the section in the input file
1112 corresponding to the st_shndx field of each local symbol.
1114 The global hash table entry for the global symbols can be found
1115 via elf_sym_hashes (input_bfd).
1117 When generating relocatable output, this function must handle
1118 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1119 going to be the section symbol corresponding to the output
1120 section, which means that the addend must be adjusted
1123 Returns FALSE on error, TRUE on success, 2 if successful and
1124 relocations should be written for this section. */
1125 int (*elf_backend_relocate_section
)
1126 (bfd
*output_bfd
, struct bfd_link_info
*info
, bfd
*input_bfd
,
1127 asection
*input_section
, bfd_byte
*contents
, Elf_Internal_Rela
*relocs
,
1128 Elf_Internal_Sym
*local_syms
, asection
**local_sections
);
1130 /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
1131 linker just before it writes a symbol out to the .dynsym section.
1132 The processor backend may make any required adjustment to the
1133 symbol. It may also take the opportunity to set contents of the
1134 dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
1135 all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
1136 on those symbols which are defined by a dynamic object. */
1137 bfd_boolean (*elf_backend_finish_dynamic_symbol
)
1138 (bfd
*output_bfd
, struct bfd_link_info
*info
,
1139 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*sym
);
1141 /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
1142 linker just before it writes all the dynamic sections out to the
1143 output file. The FINISH_DYNAMIC_SYMBOL will have been called on
1144 all dynamic symbols. */
1145 bfd_boolean (*elf_backend_finish_dynamic_sections
)
1146 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1148 /* A function to do any beginning processing needed for the ELF file
1149 before building the ELF headers and computing file positions. */
1150 void (*elf_backend_begin_write_processing
)
1151 (bfd
*, struct bfd_link_info
*);
1153 /* A function to do any final processing needed for the ELF file
1154 before writing it out. */
1155 bfd_boolean (*elf_backend_final_write_processing
)
1158 /* This function is called by get_program_header_size. It should
1159 return the number of additional program segments which this BFD
1160 will need. It should return -1 on error. */
1161 int (*elf_backend_additional_program_headers
)
1162 (bfd
*, struct bfd_link_info
*);
1164 /* This function is called to modify an existing segment map in a
1165 backend specific fashion. */
1166 bfd_boolean (*elf_backend_modify_segment_map
)
1167 (bfd
*, struct bfd_link_info
*);
1169 /* This function is called to modify program headers just before
1170 they are written. */
1171 bfd_boolean (*elf_backend_modify_headers
)
1172 (bfd
*, struct bfd_link_info
*);
1174 /* This function is called to see if the PHDR header should be
1175 checked for validity. */
1176 bfd_boolean (*elf_backend_allow_non_load_phdr
)
1177 (bfd
*, const Elf_Internal_Phdr
*, unsigned);
1179 /* This function is called before section garbage collection to
1180 mark entry symbol sections. */
1182 (struct bfd_link_info
*);
1184 /* This function is called during section garbage collection to
1185 mark sections that define global symbols. */
1186 bfd_boolean (*gc_mark_dynamic_ref
)
1187 (struct elf_link_hash_entry
*, void *);
1189 /* This function is called during section gc to discover the section a
1190 particular relocation refers to. */
1191 elf_gc_mark_hook_fn gc_mark_hook
;
1193 /* This function, if defined, is called after the first gc marking pass
1194 to allow the backend to mark additional sections. */
1195 bfd_boolean (*gc_mark_extra_sections
)
1196 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
1198 /* This function is called to initialise ELF file header info.
1199 Customised versions can modify things like the OS and ABI version. */
1200 bfd_boolean (*elf_backend_init_file_header
)
1201 (bfd
*, struct bfd_link_info
*);
1203 /* This function, if defined, prints a symbol to file and returns the
1204 name of the symbol to be printed. It should return NULL to fall
1205 back to default symbol printing. */
1206 const char *(*elf_backend_print_symbol_all
)
1207 (bfd
*, void *, asymbol
*);
1209 /* This function, if defined, is called after all local symbols and
1210 global symbols converted to locals are emitted into the symtab
1211 section. It allows the backend to emit special local symbols
1212 not handled in the hash table. */
1213 bfd_boolean (*elf_backend_output_arch_local_syms
)
1214 (bfd
*, struct bfd_link_info
*, void *,
1215 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1216 struct elf_link_hash_entry
*));
1218 /* This function, if defined, is called after all symbols are emitted
1219 into the symtab section. It allows the backend to emit special
1220 global symbols not handled in the hash table. */
1221 bfd_boolean (*elf_backend_output_arch_syms
)
1222 (bfd
*, struct bfd_link_info
*, void *,
1223 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1224 struct elf_link_hash_entry
*));
1226 /* Filter what symbols of the output file to include in the import
1227 library if one is created. */
1228 unsigned int (*elf_backend_filter_implib_symbols
)
1229 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
1231 /* Copy any information related to dynamic linking from a pre-existing
1232 symbol to a newly created symbol. Also called to copy flags and
1233 other back-end info to a weakdef, in which case the symbol is not
1234 newly created and plt/got refcounts and dynamic indices should not
1236 void (*elf_backend_copy_indirect_symbol
)
1237 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
1238 struct elf_link_hash_entry
*);
1240 /* Modify any information related to dynamic linking such that the
1241 symbol is not exported. */
1242 void (*elf_backend_hide_symbol
)
1243 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
1245 /* A function to do additional symbol fixup, called by
1246 _bfd_elf_fix_symbol_flags. */
1247 bfd_boolean (*elf_backend_fixup_symbol
)
1248 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
1250 /* Merge the backend specific symbol attribute. */
1251 void (*elf_backend_merge_symbol_attribute
)
1252 (struct elf_link_hash_entry
*, const Elf_Internal_Sym
*, bfd_boolean
,
1255 /* This function, if defined, will return a string containing the
1256 name of a target-specific dynamic tag. */
1257 char *(*elf_backend_get_target_dtag
)
1260 /* Decide whether an undefined symbol is special and can be ignored.
1261 This is the case for OPTIONAL symbols on IRIX. */
1262 bfd_boolean (*elf_backend_ignore_undef_symbol
)
1263 (struct elf_link_hash_entry
*);
1265 /* Emit relocations. Overrides default routine for emitting relocs,
1266 except during a relocatable link, or if all relocs are being emitted. */
1267 bfd_boolean (*elf_backend_emit_relocs
)
1268 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
1269 struct elf_link_hash_entry
**);
1271 /* Update relocations. It is allowed to change the number and the order.
1272 In such a case hashes should be invalidated. */
1273 void (*elf_backend_update_relocs
)
1274 (asection
*, struct bfd_elf_section_reloc_data
*);
1276 /* Count relocations. Not called for relocatable links
1277 or if all relocs are being preserved in the output. */
1278 unsigned int (*elf_backend_count_relocs
)
1279 (struct bfd_link_info
*, asection
*);
1281 /* Count additionals relocations. Called for relocatable links if
1282 additional relocations needs to be created. */
1283 unsigned int (*elf_backend_count_additional_relocs
)
1286 /* Say whether to sort relocs output by ld -r and ld --emit-relocs,
1287 by r_offset. If NULL, default to true. */
1288 bfd_boolean (*sort_relocs_p
)
1291 /* This function, if defined, is called when an NT_PRSTATUS note is found
1293 bfd_boolean (*elf_backend_grok_prstatus
)
1294 (bfd
*, Elf_Internal_Note
*);
1296 /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
1297 note is found in a core file. */
1298 bfd_boolean (*elf_backend_grok_psinfo
)
1299 (bfd
*, Elf_Internal_Note
*);
1301 /* This function, if defined, is called when a "FreeBSD" NT_PRSTATUS
1302 note is found in a core file. */
1303 bfd_boolean (*elf_backend_grok_freebsd_prstatus
)
1304 (bfd
*, Elf_Internal_Note
*);
1306 /* This function, if defined, is called to write a note to a corefile. */
1307 char *(*elf_backend_write_core_note
)
1308 (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...);
1310 /* This function, if defined, is called to convert target-specific
1311 section flag names into hex values. */
1312 flagword (*elf_backend_lookup_section_flags_hook
)
1315 /* This function returns class of a reloc type. */
1316 enum elf_reloc_type_class (*elf_backend_reloc_type_class
)
1317 (const struct bfd_link_info
*, const asection
*, const Elf_Internal_Rela
*);
1319 /* This function, if defined, removes information about discarded functions
1320 from other sections which mention them. */
1321 bfd_boolean (*elf_backend_discard_info
)
1322 (bfd
*, struct elf_reloc_cookie
*, struct bfd_link_info
*);
1324 /* This function, if defined, signals that the function above has removed
1325 the discarded relocations for this section. */
1326 bfd_boolean (*elf_backend_ignore_discarded_relocs
)
1329 /* What to do when ld finds relocations against symbols defined in
1330 discarded sections. */
1331 unsigned int (*action_discarded
)
1334 /* This function returns the width of FDE pointers in bytes, or 0 if
1335 that can't be determined for some reason. The default definition
1336 goes by the bfd's EI_CLASS. */
1337 unsigned int (*elf_backend_eh_frame_address_size
)
1338 (bfd
*, const asection
*);
1340 /* These functions tell elf-eh-frame whether to attempt to turn
1341 absolute or lsda encodings into pc-relative ones. The default
1342 definition enables these transformations. */
1343 bfd_boolean (*elf_backend_can_make_relative_eh_frame
)
1344 (bfd
*, struct bfd_link_info
*, asection
*);
1345 bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame
)
1346 (bfd
*, struct bfd_link_info
*, asection
*);
1348 /* This function returns an encoding after computing the encoded
1349 value (and storing it in ENCODED) for the given OFFSET into OSEC,
1350 to be stored in at LOC_OFFSET into the LOC_SEC input section.
1351 The default definition chooses a 32-bit PC-relative encoding. */
1352 bfd_byte (*elf_backend_encode_eh_address
)
1353 (bfd
*abfd
, struct bfd_link_info
*info
,
1354 asection
*osec
, bfd_vma offset
,
1355 asection
*loc_sec
, bfd_vma loc_offset
,
1358 /* This function, if defined, may write out the given section.
1359 Returns TRUE if it did so and FALSE if the caller should. */
1360 bfd_boolean (*elf_backend_write_section
)
1361 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
1363 /* The level of IRIX compatibility we're striving for.
1364 MIPS ELF specific function. */
1365 irix_compat_t (*elf_backend_mips_irix_compat
)
1368 reloc_howto_type
*(*elf_backend_mips_rtype_to_howto
)
1369 (bfd
*, unsigned int, bfd_boolean
);
1371 /* The swapping table to use when dealing with ECOFF information.
1372 Used for the MIPS ELF .mdebug section. */
1373 const struct ecoff_debug_swap
*elf_backend_ecoff_debug_swap
;
1375 /* This function implements `bfd_elf_bfd_from_remote_memory';
1376 see elf.c, elfcode.h. */
1377 bfd
*(*elf_backend_bfd_from_remote_memory
)
1378 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
1379 int (*target_read_memory
) (bfd_vma vma
, bfd_byte
*myaddr
,
1380 bfd_size_type len
));
1382 bfd_boolean (*elf_backend_core_find_build_id
) (bfd
*, bfd_vma
);
1384 /* This function is used by `_bfd_elf_get_synthetic_symtab';
1386 bfd_vma (*plt_sym_val
) (bfd_vma
, const asection
*, const arelent
*);
1388 /* Is symbol defined in common section? */
1389 bfd_boolean (*common_definition
) (Elf_Internal_Sym
*);
1391 /* Return a common section index for section. */
1392 unsigned int (*common_section_index
) (asection
*);
1394 /* Return a common section for section. */
1395 asection
*(*common_section
) (asection
*);
1397 /* Return TRUE if we can merge 2 definitions. */
1398 bfd_boolean (*merge_symbol
) (struct elf_link_hash_entry
*,
1399 const Elf_Internal_Sym
*, asection
**,
1400 bfd_boolean
, bfd_boolean
,
1401 bfd
*, const asection
*);
1403 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
1404 bfd_boolean (*elf_hash_symbol
) (struct elf_link_hash_entry
*);
1406 /* If non-NULL, called to register the location of XLAT_LOC within
1407 .MIPS.xhash at which real final dynindx for H will be written.
1408 If XLAT_LOC is zero, the symbol is not included in
1409 .MIPS.xhash and no dynindx will be written. */
1410 void (*record_xhash_symbol
)
1411 (struct elf_link_hash_entry
*h
, bfd_vma xlat_loc
);
1413 /* Return TRUE if type is a function symbol type. */
1414 bfd_boolean (*is_function_type
) (unsigned int type
);
1416 /* If the ELF symbol SYM might be a function in SEC, return the
1417 function size and set *CODE_OFF to the function's entry point,
1418 otherwise return zero. */
1419 bfd_size_type (*maybe_function_sym
) (const asymbol
*sym
, asection
*sec
,
1422 /* Given NAME, the name of a relocation section stripped of its
1423 .rel/.rela prefix, return the section in ABFD to which the
1424 relocations apply. */
1425 asection
*(*get_reloc_section
) (bfd
*abfd
, const char *name
);
1427 /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
1428 has a type >= SHT_LOOS. Returns TRUE if the fields were initialised,
1429 FALSE otherwise. Can be called multiple times for a given section,
1430 until it returns TRUE. Most of the times it is called ISECTION will be
1431 set to an input section that might be associated with the output section.
1432 The last time that it is called, ISECTION will be set to NULL. */
1433 bfd_boolean (*elf_backend_copy_special_section_fields
)
1434 (const bfd
*ibfd
, bfd
*obfd
, const Elf_Internal_Shdr
*isection
,
1435 Elf_Internal_Shdr
*osection
);
1437 /* Used to handle bad SHF_LINK_ORDER input. */
1438 void (*link_order_error_handler
) (const char *, ...);
1440 /* Name of the PLT relocation section. */
1441 const char *relplt_name
;
1443 /* Alternate EM_xxxx machine codes for this backend. */
1444 int elf_machine_alt1
;
1445 int elf_machine_alt2
;
1447 const struct elf_size_info
*s
;
1449 /* An array of target specific special sections. */
1450 const struct bfd_elf_special_section
*special_sections
;
1452 /* The size in bytes of the header for the GOT. This includes the
1453 so-called reserved entries on some systems. */
1454 bfd_vma got_header_size
;
1456 /* The size of the GOT entry for the symbol pointed to by H if non-NULL,
1457 otherwise by the local symbol with index SYMNDX in IBFD. */
1458 bfd_vma (*got_elt_size
) (bfd
*, struct bfd_link_info
*,
1459 struct elf_link_hash_entry
*h
,
1460 bfd
*ibfd
, unsigned long symndx
);
1462 /* The vendor name to use for a processor-standard attributes section. */
1463 const char *obj_attrs_vendor
;
1465 /* The section name to use for a processor-standard attributes section. */
1466 const char *obj_attrs_section
;
1468 /* Return 1, 2 or 3 to indicate what type of arguments a
1469 processor-specific tag takes. */
1470 int (*obj_attrs_arg_type
) (int);
1472 /* The section type to use for an attributes section. */
1473 unsigned int obj_attrs_section_type
;
1475 /* This function determines the order in which any attributes are
1476 written. It must be defined for input in the range
1477 LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range
1478 is used in order to make unity easy). The returned value is the
1479 actual tag number to place in the input position. */
1480 int (*obj_attrs_order
) (int);
1482 /* Handle merging unknown attributes; either warn and return TRUE,
1483 or give an error and return FALSE. */
1484 bfd_boolean (*obj_attrs_handle_unknown
) (bfd
*, int);
1486 /* Parse GNU properties. Return the property kind. If the property
1487 is corrupt, issue an error message and return property_corrupt. */
1488 enum elf_property_kind (*parse_gnu_properties
) (bfd
*, unsigned int,
1492 /* Merge GNU properties. Return TRUE if property is updated. */
1493 bfd_boolean (*merge_gnu_properties
) (struct bfd_link_info
*, bfd
*, bfd
*,
1494 elf_property
*, elf_property
*);
1496 /* Set up GNU properties. */
1497 bfd
*(*setup_gnu_properties
) (struct bfd_link_info
*);
1499 /* Fix up GNU properties. */
1500 void (*fixup_gnu_properties
) (struct bfd_link_info
*,
1501 elf_property_list
**);
1503 /* Encoding used for compact EH tables. */
1504 int (*compact_eh_encoding
) (struct bfd_link_info
*);
1506 /* Opcode representing no unwind. */
1507 int (*cant_unwind_opcode
) (struct bfd_link_info
*);
1509 /* This is non-zero if static TLS segments require a special alignment. */
1510 unsigned static_tls_alignment
;
1512 /* Alignment for the PT_GNU_STACK segment. */
1513 unsigned stack_align
;
1515 /* Flag bits to assign to a section of type SHT_STRTAB. */
1516 unsigned long elf_strtab_flags
;
1518 /* This is TRUE if the linker should act like collect and gather
1519 global constructors and destructors by name. This is TRUE for
1520 MIPS ELF because the Irix 5 tools can not handle the .init
1522 unsigned collect
: 1;
1524 /* This is TRUE if the linker should ignore changes to the type of a
1525 symbol. This is TRUE for MIPS ELF because some Irix 5 objects
1526 record undefined functions as STT_OBJECT although the definitions
1528 unsigned type_change_ok
: 1;
1530 /* Whether the backend may use REL relocations. (Some backends use
1531 both REL and RELA relocations, and this flag is set for those
1533 unsigned may_use_rel_p
: 1;
1535 /* Whether the backend may use RELA relocations. (Some backends use
1536 both REL and RELA relocations, and this flag is set for those
1538 unsigned may_use_rela_p
: 1;
1540 /* Whether the default relocation type is RELA. If a backend with
1541 this flag set wants REL relocations for a particular section,
1542 it must note that explicitly. Similarly, if this flag is clear,
1543 and the backend wants RELA relocations for a particular
1545 unsigned default_use_rela_p
: 1;
1547 /* True if PLT and copy relocations should be RELA by default. */
1548 unsigned rela_plts_and_copies_p
: 1;
1550 /* Set if RELA relocations for a relocatable link can be handled by
1551 generic code. Backends that set this flag need do nothing in the
1552 backend relocate_section routine for relocatable linking. */
1553 unsigned rela_normal
: 1;
1555 /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT
1557 unsigned dtrel_excludes_plt
: 1;
1559 /* TRUE if addresses "naturally" sign extend. This is used when
1560 swapping in from Elf32 when BFD64. */
1561 unsigned sign_extend_vma
: 1;
1563 unsigned want_got_plt
: 1;
1564 unsigned plt_readonly
: 1;
1565 unsigned want_plt_sym
: 1;
1566 unsigned plt_not_loaded
: 1;
1567 unsigned plt_alignment
: 4;
1568 unsigned can_gc_sections
: 1;
1569 unsigned can_refcount
: 1;
1570 unsigned want_got_sym
: 1;
1571 unsigned want_dynbss
: 1;
1572 unsigned want_dynrelro
: 1;
1574 /* Targets which do not support physical addressing often require
1575 that the p_paddr field in the section header to be set to zero.
1576 This field indicates whether this behavior is required. */
1577 unsigned want_p_paddr_set_to_zero
: 1;
1579 /* Target has broken hardware and/or kernel that requires pages not
1580 to be mapped twice with different permissions. */
1581 unsigned no_page_alias
: 1;
1583 /* True if an object file lacking a .note.GNU-stack section
1584 should be assumed to be requesting exec stack. At least one
1585 other file in the link needs to have a .note.GNU-stack section
1586 for a PT_GNU_STACK segment to be created. */
1587 unsigned default_execstack
: 1;
1589 /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize
1590 in length rather than sec->size in length, if sec->rawsize is
1591 non-zero and smaller than sec->size. */
1592 unsigned caches_rawsize
: 1;
1594 /* Address of protected data defined in the shared library may be
1595 external, i.e., due to copy relocation. */
1596 unsigned extern_protected_data
: 1;
1598 /* True if `_bfd_elf_link_renumber_dynsyms' must be called even for
1600 unsigned always_renumber_dynsyms
: 1;
1602 /* True if the 32-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1603 members use a 16-bit data type. */
1604 unsigned linux_prpsinfo32_ugid16
: 1;
1606 /* True if the 64-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1607 members use a 16-bit data type. */
1608 unsigned linux_prpsinfo64_ugid16
: 1;
1611 /* Information about reloc sections associated with a bfd_elf_section_data
1613 struct bfd_elf_section_reloc_data
1615 /* The ELF header for the reloc section associated with this
1617 Elf_Internal_Shdr
*hdr
;
1618 /* The number of relocations currently assigned to HDR. */
1620 /* The ELF section number of the reloc section. Only used for an
1623 /* Used by the backend linker to store the symbol hash table entries
1624 associated with relocs against global symbols. */
1625 struct elf_link_hash_entry
**hashes
;
1628 /* Information stored for each BFD section in an ELF file. This
1629 structure is allocated by elf_new_section_hook. */
1631 struct bfd_elf_section_data
1633 /* The ELF header for this section. */
1634 Elf_Internal_Shdr this_hdr
;
1636 /* INPUT_SECTION_FLAGS if specified in the linker script. */
1637 struct flag_info
*section_flag_info
;
1639 /* Information about the REL and RELA reloc sections associated
1640 with this section, if any. */
1641 struct bfd_elf_section_reloc_data rel
, rela
;
1643 /* The ELF section number of this section. */
1646 /* Used by the backend linker when generating a shared library to
1647 record the dynamic symbol index for a section symbol
1648 corresponding to this section. A value of 0 means that there is
1649 no dynamic symbol for this section. */
1652 /* A pointer to the linked-to section for SHF_LINK_ORDER. */
1653 asection
*linked_to
;
1655 /* A pointer to the swapped relocs. If the section uses REL relocs,
1656 rather than RELA, all the r_addend fields will be zero. This
1657 pointer may be NULL. It is used by the backend linker. */
1658 Elf_Internal_Rela
*relocs
;
1660 /* A pointer to a linked list tracking dynamic relocs copied for
1664 /* A pointer to the bfd section used for dynamic relocs. */
1668 /* Group name, if this section is a member of a group. */
1671 /* Group signature sym, if this is the SHT_GROUP section. */
1672 struct bfd_symbol
*id
;
1675 /* For a member of a group, points to the SHT_GROUP section.
1676 NULL for the SHT_GROUP section itself and non-group sections. */
1677 asection
*sec_group
;
1679 /* A linked list of member sections in the group. Circular when used by
1680 the linker. For the SHT_GROUP section, points at first member. */
1681 asection
*next_in_group
;
1683 /* The FDEs associated with this section. The u.fde.next_in_section
1684 field acts as a chain pointer. */
1685 struct eh_cie_fde
*fde_list
;
1687 /* Link from a text section to its .eh_frame_entry section. */
1688 asection
*eh_frame_entry
;
1690 /* A pointer used for various section optimizations. */
1694 #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
1695 #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
1696 #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type)
1697 #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
1698 #define elf_section_info(sec) (elf_section_data(sec)->this_hdr.sh_info)
1699 #define elf_group_name(sec) (elf_section_data(sec)->group.name)
1700 #define elf_group_id(sec) (elf_section_data(sec)->group.id)
1701 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
1702 #define elf_fde_list(sec) (elf_section_data(sec)->fde_list)
1703 #define elf_sec_group(sec) (elf_section_data(sec)->sec_group)
1704 #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry)
1706 #define xvec_get_elf_backend_data(xvec) \
1707 ((const struct elf_backend_data *) (xvec)->backend_data)
1709 #define get_elf_backend_data(abfd) \
1710 xvec_get_elf_backend_data ((abfd)->xvec)
1712 /* The least object attributes (within an attributes subsection) known
1713 for any target. Some code assumes that the value 0 is not used and
1714 the field for that attribute can instead be used as a marker to
1715 indicate that attributes have been initialized. */
1716 #define LEAST_KNOWN_OBJ_ATTRIBUTE 2
1718 /* The maximum number of known object attributes for any target. */
1719 #define NUM_KNOWN_OBJ_ATTRIBUTES 71
1721 /* The value of an object attribute. The type indicates whether the attribute
1722 holds and integer, a string, or both. It can also indicate that there can
1723 be no default (i.e. all values must be written to file, even zero), or
1724 that the value is in error and should not be written to file. */
1726 typedef struct obj_attribute
1728 #define ATTR_TYPE_FLAG_INT_VAL (1 << 0)
1729 #define ATTR_TYPE_FLAG_STR_VAL (1 << 1)
1730 #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
1731 #define ATTR_TYPE_FLAG_ERROR (1 << 3)
1733 #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
1734 #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
1735 #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
1736 #define ATTR_TYPE_HAS_ERROR(TYPE) ((TYPE) & ATTR_TYPE_FLAG_ERROR)
1743 typedef struct obj_attribute_list
1745 struct obj_attribute_list
*next
;
1748 } obj_attribute_list
;
1750 /* Object attributes may either be defined by the processor ABI, index
1751 OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
1752 (and possibly also processor-specific), index OBJ_ATTR_GNU. */
1753 #define OBJ_ATTR_PROC 0
1754 #define OBJ_ATTR_GNU 1
1755 #define OBJ_ATTR_FIRST OBJ_ATTR_PROC
1756 #define OBJ_ATTR_LAST OBJ_ATTR_GNU
1758 /* The following object attribute tags are taken as generic, for all
1759 targets and for "gnu" where there is no target standard. */
1766 Tag_compatibility
= 32
1769 /* The following struct stores information about every SystemTap section
1770 found in the object file. */
1773 struct sdt_note
*next
;
1778 /* tdata information grabbed from an elf core file. */
1779 struct core_elf_obj_tdata
1788 /* Extra tdata information held for output ELF BFDs. */
1789 struct output_elf_obj_tdata
1791 struct elf_segment_map
*seg_map
;
1792 struct elf_strtab_hash
*strtab_ptr
;
1794 /* STT_SECTION symbols for each section */
1795 asymbol
**section_syms
;
1797 /* Used to determine if PT_GNU_EH_FRAME segment header should be
1799 asection
*eh_frame_hdr
;
1801 /* NT_GNU_BUILD_ID note type info. */
1804 bfd_boolean (*after_write_object_contents
) (bfd
*);
1809 /* Records the result of `get_program_header_size'. */
1810 bfd_size_type program_header_size
;
1812 /* Used when laying out sections. */
1813 file_ptr next_file_pos
;
1815 int num_section_syms
;
1816 unsigned int shstrtab_section
, strtab_section
;
1818 /* Segment flags for the PT_GNU_STACK segment. */
1819 unsigned int stack_flags
;
1821 /* Used to determine if the e_flags field has been initialized */
1822 bfd_boolean flags_init
;
1825 /* Indicate if the bfd contains SHF_GNU_MBIND sections or symbols that
1826 have the STT_GNU_IFUNC symbol type or STB_GNU_UNIQUE binding. Used
1827 to set the osabi field in the ELF header structure. */
1830 elf_gnu_osabi_mbind
= 1 << 0,
1831 elf_gnu_osabi_ifunc
= 1 << 1,
1832 elf_gnu_osabi_unique
= 1 << 2,
1835 typedef struct elf_section_list
1837 Elf_Internal_Shdr hdr
;
1839 struct elf_section_list
* next
;
1842 enum dynamic_lib_link_class
{
1846 DYN_NO_ADD_NEEDED
= 4,
1850 /* Some private data is stashed away for future use using the tdata pointer
1851 in the bfd structure. */
1853 struct elf_obj_tdata
1855 Elf_Internal_Ehdr elf_header
[1]; /* Actual data, but ref like ptr */
1856 Elf_Internal_Shdr
**elf_sect_ptr
;
1857 Elf_Internal_Phdr
*phdr
;
1858 Elf_Internal_Shdr symtab_hdr
;
1859 Elf_Internal_Shdr shstrtab_hdr
;
1860 Elf_Internal_Shdr strtab_hdr
;
1861 Elf_Internal_Shdr dynsymtab_hdr
;
1862 Elf_Internal_Shdr dynstrtab_hdr
;
1863 Elf_Internal_Shdr dynversym_hdr
;
1864 Elf_Internal_Shdr dynverref_hdr
;
1865 Elf_Internal_Shdr dynverdef_hdr
;
1866 elf_section_list
* symtab_shndx_list
;
1867 bfd_vma gp
; /* The gp value */
1868 unsigned int gp_size
; /* The gp size */
1869 unsigned int num_elf_sections
; /* elf_sect_ptr size */
1871 /* A mapping from external symbols to entries in the linker hash
1872 table, used when linking. This is indexed by the symbol index
1873 minus the sh_info field of the symbol table header. */
1874 struct elf_link_hash_entry
**sym_hashes
;
1876 /* Track usage and final offsets of GOT entries for local symbols.
1877 This array is indexed by symbol index. Elements are used
1878 identically to "got" in struct elf_link_hash_entry. */
1881 bfd_signed_vma
*refcounts
;
1883 struct got_entry
**ents
;
1886 /* The linker ELF emulation code needs to let the backend ELF linker
1887 know what filename should be used for a dynamic object if the
1888 dynamic object is found using a search. The emulation code then
1889 sometimes needs to know what name was actually used. Until the
1890 file has been added to the linker symbol table, this field holds
1891 the name the linker wants. After it has been added, it holds the
1892 name actually used, which will be the DT_SONAME entry if there is
1894 const char *dt_name
;
1896 /* The linker emulation needs to know what audit libs
1897 are used by a dynamic object. */
1898 const char *dt_audit
;
1900 /* Used by find_nearest_line entry point. */
1903 /* A place to stash dwarf1 info for this bfd. */
1904 struct dwarf1_debug
*dwarf1_find_line_info
;
1906 /* A place to stash dwarf2 info for this bfd. */
1907 void *dwarf2_find_line_info
;
1909 /* Stash away info for yet another find line/function variant. */
1910 void *elf_find_function_cache
;
1912 /* Number of symbol version definitions we are about to emit. */
1913 unsigned int cverdefs
;
1915 /* Number of symbol version references we are about to emit. */
1916 unsigned int cverrefs
;
1918 /* Symbol version definitions in external objects. */
1919 Elf_Internal_Verdef
*verdef
;
1921 /* Symbol version references to external objects. */
1922 Elf_Internal_Verneed
*verref
;
1924 /* A pointer to the .eh_frame section. */
1925 asection
*eh_frame_section
;
1927 /* Symbol buffer. */
1930 /* List of GNU properties. Will be updated by setup_gnu_properties
1931 after all input GNU properties are merged for output. */
1932 elf_property_list
*properties
;
1934 obj_attribute known_obj_attributes
[2][NUM_KNOWN_OBJ_ATTRIBUTES
];
1935 obj_attribute_list
*other_obj_attributes
[2];
1937 /* Linked-list containing information about every Systemtap section
1938 found in the object file. Each section corresponds to one entry
1940 struct sdt_note
*sdt_note_head
;
1942 Elf_Internal_Shdr
**group_sect_ptr
;
1945 /* Index into group_sect_ptr, updated by setup_group when finding a
1946 section's group. Used to optimize subsequent group searches. */
1947 unsigned int group_search_offset
;
1949 unsigned int symtab_section
, dynsymtab_section
;
1950 unsigned int dynversym_section
, dynverdef_section
, dynverref_section
;
1952 /* An identifier used to distinguish different target
1953 specific extensions to this structure. */
1954 ENUM_BITFIELD (elf_target_id
) object_id
: 6;
1956 /* Whether a dyanmic object was specified normally on the linker
1957 command line, or was specified when --as-needed was in effect,
1958 or was found via a DT_NEEDED entry. */
1959 ENUM_BITFIELD (dynamic_lib_link_class
) dyn_lib_class
: 4;
1961 /* Whether the bfd uses OS specific bits that require ELFOSABI_GNU. */
1962 ENUM_BITFIELD (elf_gnu_osabi
) has_gnu_osabi
: 3;
1964 /* Whether if the bfd contains the GNU_PROPERTY_NO_COPY_ON_PROTECTED
1966 unsigned int has_no_copy_on_protected
: 1;
1968 /* Irix 5 often screws up the symbol table, sorting local symbols
1969 after global symbols. This flag is set if the symbol table in
1970 this BFD appears to be screwed up. If it is, we ignore the
1971 sh_info field in the symbol table header, and always read all the
1973 unsigned int bad_symtab
: 1;
1975 /* Information grabbed from an elf core file. */
1976 struct core_elf_obj_tdata
*core
;
1978 /* More information held for output ELF BFDs. */
1979 struct output_elf_obj_tdata
*o
;
1982 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
1984 #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id)
1985 #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size)
1986 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
1987 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
1988 #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections)
1989 #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map)
1990 #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos)
1991 #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr)
1992 #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags)
1993 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr)
1994 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
1995 #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list)
1996 #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section)
1997 #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section)
1998 #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr)
1999 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
2000 #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
2001 #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
2002 #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
2003 #define elf_eh_frame_section(bfd) \
2004 (elf_tdata(bfd) -> eh_frame_section)
2005 #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms)
2006 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms)
2007 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
2008 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
2009 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
2010 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
2011 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
2012 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
2013 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
2014 #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
2015 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
2016 #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit)
2017 #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
2018 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
2019 #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init)
2020 #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes)
2021 #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes)
2022 #define elf_known_obj_attributes_proc(bfd) \
2023 (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC])
2024 #define elf_other_obj_attributes_proc(bfd) \
2025 (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
2026 #define elf_properties(bfd) (elf_tdata (bfd) -> properties)
2027 #define elf_has_no_copy_on_protected(bfd) \
2028 (elf_tdata(bfd) -> has_no_copy_on_protected)
2030 extern void _bfd_elf_swap_verdef_in
2031 (bfd
*, const Elf_External_Verdef
*, Elf_Internal_Verdef
*);
2032 extern void _bfd_elf_swap_verdef_out
2033 (bfd
*, const Elf_Internal_Verdef
*, Elf_External_Verdef
*);
2034 extern void _bfd_elf_swap_verdaux_in
2035 (bfd
*, const Elf_External_Verdaux
*, Elf_Internal_Verdaux
*);
2036 extern void _bfd_elf_swap_verdaux_out
2037 (bfd
*, const Elf_Internal_Verdaux
*, Elf_External_Verdaux
*);
2038 extern void _bfd_elf_swap_verneed_in
2039 (bfd
*, const Elf_External_Verneed
*, Elf_Internal_Verneed
*);
2040 extern void _bfd_elf_swap_verneed_out
2041 (bfd
*, const Elf_Internal_Verneed
*, Elf_External_Verneed
*);
2042 extern void _bfd_elf_swap_vernaux_in
2043 (bfd
*, const Elf_External_Vernaux
*, Elf_Internal_Vernaux
*);
2044 extern void _bfd_elf_swap_vernaux_out
2045 (bfd
*, const Elf_Internal_Vernaux
*, Elf_External_Vernaux
*);
2046 extern void _bfd_elf_swap_versym_in
2047 (bfd
*, const Elf_External_Versym
*, Elf_Internal_Versym
*);
2048 extern void _bfd_elf_swap_versym_out
2049 (bfd
*, const Elf_Internal_Versym
*, Elf_External_Versym
*);
2051 extern unsigned int _bfd_elf_section_from_bfd_section
2052 (bfd
*, asection
*);
2053 extern char *bfd_elf_string_from_elf_section
2054 (bfd
*, unsigned, unsigned);
2055 extern Elf_Internal_Sym
*bfd_elf_get_elf_syms
2056 (bfd
*, Elf_Internal_Shdr
*, size_t, size_t, Elf_Internal_Sym
*, void *,
2057 Elf_External_Sym_Shndx
*);
2058 extern char * bfd_elf_get_str_section (bfd
*, unsigned int);
2059 extern const char *bfd_elf_sym_name
2060 (bfd
*, Elf_Internal_Shdr
*, Elf_Internal_Sym
*, asection
*);
2062 extern bfd_boolean _bfd_elf_copy_private_bfd_data
2064 extern bfd_boolean _bfd_elf_print_private_bfd_data
2066 const char * _bfd_elf_get_symbol_version_string
2067 (bfd
*, asymbol
*, bfd_boolean
*);
2068 extern void bfd_elf_print_symbol
2069 (bfd
*, void *, asymbol
*, bfd_print_symbol_type
);
2071 extern unsigned int _bfd_elf_eh_frame_address_size
2072 (bfd
*, const asection
*);
2073 extern bfd_byte _bfd_elf_encode_eh_address
2074 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*osec
, bfd_vma offset
,
2075 asection
*loc_sec
, bfd_vma loc_offset
, bfd_vma
*encoded
);
2076 extern bfd_boolean _bfd_elf_can_make_relative
2077 (bfd
*input_bfd
, struct bfd_link_info
*info
, asection
*eh_frame_section
);
2079 extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
2080 (const struct bfd_link_info
*, const asection
*,
2081 const Elf_Internal_Rela
*);
2082 extern bfd_vma _bfd_elf_rela_local_sym
2083 (bfd
*, Elf_Internal_Sym
*, asection
**, Elf_Internal_Rela
*);
2084 extern bfd_vma _bfd_elf_rel_local_sym
2085 (bfd
*, Elf_Internal_Sym
*, asection
**, bfd_vma
);
2086 extern bfd_vma _bfd_elf_section_offset
2087 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2089 extern unsigned long bfd_elf_hash
2091 extern unsigned long bfd_elf_gnu_hash
2094 extern bfd_reloc_status_type bfd_elf_generic_reloc
2095 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
2096 extern bfd_boolean bfd_elf_allocate_object
2097 (bfd
*, size_t, enum elf_target_id
);
2098 extern bfd_boolean bfd_elf_make_object
2100 extern bfd_boolean bfd_elf_mkcorefile
2102 extern bfd_boolean _bfd_elf_make_section_from_shdr
2103 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
2104 extern bfd_boolean _bfd_elf_make_section_from_phdr
2105 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
2106 extern struct bfd_hash_entry
*_bfd_elf_link_hash_newfunc
2107 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);
2108 extern struct bfd_link_hash_table
*_bfd_elf_link_hash_table_create
2110 extern void _bfd_elf_link_hash_table_free
2112 extern void _bfd_elf_link_hash_copy_indirect
2113 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2114 struct elf_link_hash_entry
*);
2115 extern void _bfd_elf_link_hash_hide_symbol
2116 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
2117 extern void _bfd_elf_link_hide_symbol
2118 (bfd
*, struct bfd_link_info
*, struct bfd_link_hash_entry
*);
2119 extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
2120 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2121 extern bfd_boolean _bfd_elf_link_hash_table_init
2122 (struct elf_link_hash_table
*, bfd
*,
2123 struct bfd_hash_entry
*(*)
2124 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *),
2125 unsigned int, enum elf_target_id
);
2126 extern bfd_boolean _bfd_elf_slurp_version_tables
2127 (bfd
*, bfd_boolean
);
2128 extern bfd_boolean _bfd_elf_merge_sections
2129 (bfd
*, struct bfd_link_info
*);
2130 extern bfd_boolean _bfd_elf_match_sections_by_type
2131 (bfd
*, const asection
*, bfd
*, const asection
*);
2132 extern bfd_boolean bfd_elf_is_group_section
2133 (bfd
*, const struct bfd_section
*);
2134 extern const char *bfd_elf_group_name
2135 (bfd
*, const struct bfd_section
*);
2136 extern bfd_boolean _bfd_elf_section_already_linked
2137 (bfd
*, asection
*, struct bfd_link_info
*);
2138 extern void bfd_elf_set_group_contents
2139 (bfd
*, asection
*, void *);
2140 extern unsigned int _bfd_elf_filter_global_symbols
2141 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
2142 extern asection
*_bfd_elf_check_kept_section
2143 (asection
*, struct bfd_link_info
*);
2144 #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms
2145 extern void _bfd_elf_copy_link_hash_symbol_type
2146 (bfd
*, struct bfd_link_hash_entry
*, struct bfd_link_hash_entry
*);
2147 extern bfd_boolean _bfd_elf_size_group_sections
2148 (struct bfd_link_info
*);
2149 extern bfd_boolean _bfd_elf_fixup_group_sections
2150 (bfd
*, asection
*);
2151 extern bfd_boolean _bfd_elf_copy_private_header_data
2153 extern bfd_boolean _bfd_elf_copy_private_symbol_data
2154 (bfd
*, asymbol
*, bfd
*, asymbol
*);
2155 #define _bfd_generic_init_private_section_data \
2156 _bfd_elf_init_private_section_data
2157 extern bfd_boolean _bfd_elf_init_private_section_data
2158 (bfd
*, asection
*, bfd
*, asection
*, struct bfd_link_info
*);
2159 extern bfd_boolean _bfd_elf_copy_private_section_data
2160 (bfd
*, asection
*, bfd
*, asection
*);
2161 extern bfd_boolean _bfd_elf_write_object_contents
2163 extern bfd_boolean _bfd_elf_write_corefile_contents
2165 extern bfd_boolean _bfd_elf_set_section_contents
2166 (bfd
*, sec_ptr
, const void *, file_ptr
, bfd_size_type
);
2167 extern long _bfd_elf_get_symtab_upper_bound
2169 extern long _bfd_elf_canonicalize_symtab
2170 (bfd
*, asymbol
**);
2171 extern long _bfd_elf_get_dynamic_symtab_upper_bound
2173 extern long _bfd_elf_canonicalize_dynamic_symtab
2174 (bfd
*, asymbol
**);
2175 extern long _bfd_elf_get_synthetic_symtab
2176 (bfd
*, long, asymbol
**, long, asymbol
**, asymbol
**);
2177 extern long _bfd_elf_get_reloc_upper_bound
2179 extern long _bfd_elf_canonicalize_reloc
2180 (bfd
*, sec_ptr
, arelent
**, asymbol
**);
2181 extern asection
* _bfd_elf_get_dynamic_reloc_section
2182 (bfd
*, asection
*, bfd_boolean
);
2183 extern asection
* _bfd_elf_make_dynamic_reloc_section
2184 (asection
*, bfd
*, unsigned int, bfd
*, bfd_boolean
);
2185 extern long _bfd_elf_get_dynamic_reloc_upper_bound
2187 extern long _bfd_elf_canonicalize_dynamic_reloc
2188 (bfd
*, arelent
**, asymbol
**);
2189 extern asymbol
*_bfd_elf_make_empty_symbol
2191 extern void _bfd_elf_get_symbol_info
2192 (bfd
*, asymbol
*, symbol_info
*);
2193 extern bfd_boolean _bfd_elf_is_local_label_name
2194 (bfd
*, const char *);
2195 extern alent
*_bfd_elf_get_lineno
2197 extern bfd_boolean _bfd_elf_set_arch_mach
2198 (bfd
*, enum bfd_architecture
, unsigned long);
2199 extern bfd_boolean _bfd_elf_find_nearest_line
2200 (bfd
*, asymbol
**, asection
*, bfd_vma
,
2201 const char **, const char **, unsigned int *, unsigned int *);
2202 extern bfd_boolean _bfd_elf_find_line
2203 (bfd
*, asymbol
**, asymbol
*, const char **, unsigned int *);
2204 extern bfd_boolean _bfd_elf_find_inliner_info
2205 (bfd
*, const char **, const char **, unsigned int *);
2206 extern asymbol
*_bfd_elf_find_function
2207 (bfd
*, asymbol
**, asection
*, bfd_vma
, const char **, const char **);
2208 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
2209 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
2210 extern int _bfd_elf_sizeof_headers
2211 (bfd
*, struct bfd_link_info
*);
2212 extern bfd_boolean _bfd_elf_new_section_hook
2213 (bfd
*, asection
*);
2214 extern const struct bfd_elf_special_section
*_bfd_elf_get_special_section
2215 (const char *, const struct bfd_elf_special_section
*, unsigned int);
2216 extern const struct bfd_elf_special_section
*_bfd_elf_get_sec_type_attr
2217 (bfd
*, asection
*);
2219 extern bfd_boolean _bfd_elf_link_hide_sym_by_version
2220 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2222 /* If the target doesn't have reloc handling written yet: */
2223 extern bfd_boolean _bfd_elf_no_info_to_howto
2224 (bfd
*, arelent
*, Elf_Internal_Rela
*);
2226 extern bfd_boolean bfd_section_from_shdr
2227 (bfd
*, unsigned int shindex
);
2228 extern bfd_boolean bfd_section_from_phdr
2229 (bfd
*, Elf_Internal_Phdr
*, int);
2231 extern int _bfd_elf_symbol_from_bfd_symbol
2232 (bfd
*, asymbol
**);
2234 extern Elf_Internal_Sym
*bfd_sym_from_r_symndx
2235 (struct sym_cache
*, bfd
*, unsigned long);
2236 extern asection
*bfd_section_from_elf_index
2237 (bfd
*, unsigned int);
2239 extern struct elf_strtab_hash
* _bfd_elf_strtab_init
2241 extern void _bfd_elf_strtab_free
2242 (struct elf_strtab_hash
*);
2243 extern size_t _bfd_elf_strtab_add
2244 (struct elf_strtab_hash
*, const char *, bfd_boolean
);
2245 extern void _bfd_elf_strtab_addref
2246 (struct elf_strtab_hash
*, size_t);
2247 extern void _bfd_elf_strtab_delref
2248 (struct elf_strtab_hash
*, size_t);
2249 extern unsigned int _bfd_elf_strtab_refcount
2250 (struct elf_strtab_hash
*, size_t);
2251 extern void _bfd_elf_strtab_clear_all_refs
2252 (struct elf_strtab_hash
*);
2253 extern void *_bfd_elf_strtab_save
2254 (struct elf_strtab_hash
*);
2255 extern void _bfd_elf_strtab_restore
2256 (struct elf_strtab_hash
*, void *);
2257 extern bfd_size_type _bfd_elf_strtab_size
2258 (struct elf_strtab_hash
*);
2259 extern bfd_size_type _bfd_elf_strtab_len
2260 (struct elf_strtab_hash
*);
2261 extern bfd_size_type _bfd_elf_strtab_offset
2262 (struct elf_strtab_hash
*, size_t);
2263 extern const char * _bfd_elf_strtab_str
2264 (struct elf_strtab_hash
*, size_t idx
, bfd_size_type
*offset
);
2265 extern bfd_boolean _bfd_elf_strtab_emit
2266 (bfd
*, struct elf_strtab_hash
*);
2267 extern void _bfd_elf_strtab_finalize
2268 (struct elf_strtab_hash
*);
2270 extern bfd_boolean bfd_elf_parse_eh_frame_entries
2271 (bfd
*, struct bfd_link_info
*);
2272 extern bfd_boolean _bfd_elf_parse_eh_frame_entry
2273 (struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2274 extern void _bfd_elf_parse_eh_frame
2275 (bfd
*, struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2276 extern bfd_boolean _bfd_elf_end_eh_frame_parsing
2277 (struct bfd_link_info
*info
);
2279 extern bfd_boolean _bfd_elf_discard_section_eh_frame
2280 (bfd
*, struct bfd_link_info
*, asection
*,
2281 bfd_boolean (*) (bfd_vma
, void *), struct elf_reloc_cookie
*);
2282 extern bfd_boolean _bfd_elf_adjust_eh_frame_global_symbol
2283 (struct elf_link_hash_entry
*, void *);
2284 extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
2285 (bfd
*, struct bfd_link_info
*);
2286 extern bfd_vma _bfd_elf_eh_frame_section_offset
2287 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2288 extern bfd_boolean _bfd_elf_write_section_eh_frame
2289 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2290 bfd_boolean _bfd_elf_write_section_eh_frame_entry
2291 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2292 extern bfd_boolean
_bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info
*);
2293 extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
2294 (bfd
*, struct bfd_link_info
*);
2295 extern bfd_boolean _bfd_elf_eh_frame_present
2296 (struct bfd_link_info
*);
2297 extern bfd_boolean _bfd_elf_eh_frame_entry_present
2298 (struct bfd_link_info
*);
2299 extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
2300 (struct bfd_link_info
*);
2302 extern bfd_boolean
_bfd_elf_hash_symbol (struct elf_link_hash_entry
*);
2304 extern long _bfd_elf_link_lookup_local_dynindx
2305 (struct bfd_link_info
*, bfd
*, long);
2306 extern bfd_boolean _bfd_elf_compute_section_file_positions
2307 (bfd
*, struct bfd_link_info
*);
2308 extern file_ptr _bfd_elf_assign_file_position_for_section
2309 (Elf_Internal_Shdr
*, file_ptr
, bfd_boolean
);
2310 extern bfd_boolean _bfd_elf_modify_headers
2311 (bfd
*, struct bfd_link_info
*);
2313 extern bfd_boolean _bfd_elf_validate_reloc
2316 extern bfd_boolean bfd_elf_record_link_assignment
2317 (bfd
*, struct bfd_link_info
*, const char *, bfd_boolean
,
2319 extern bfd_boolean
bfd_elf_stack_segment_size (bfd
*, struct bfd_link_info
*,
2320 const char *, bfd_vma
);
2321 extern bfd_boolean bfd_elf_size_dynamic_sections
2322 (bfd
*, const char *, const char *, const char *, const char *, const char *,
2323 const char * const *, struct bfd_link_info
*, struct bfd_section
**);
2324 extern bfd_boolean bfd_elf_size_dynsym_hash_dynstr
2325 (bfd
*, struct bfd_link_info
*);
2326 extern bfd_boolean bfd_elf_get_bfd_needed_list
2327 (bfd
*, struct bfd_link_needed_list
**);
2328 extern struct bfd_link_needed_list
*bfd_elf_get_needed_list
2329 (bfd
*, struct bfd_link_info
*);
2330 extern void bfd_elf_set_dt_needed_name
2331 (bfd
*, const char *);
2332 extern const char *bfd_elf_get_dt_soname
2334 extern void bfd_elf_set_dyn_lib_class
2335 (bfd
*, enum dynamic_lib_link_class
);
2336 extern int bfd_elf_get_dyn_lib_class
2338 extern struct bfd_link_needed_list
*bfd_elf_get_runpath_list
2339 (bfd
*, struct bfd_link_info
*);
2340 extern int bfd_elf_discard_info
2341 (bfd
*, struct bfd_link_info
*);
2342 extern unsigned int _bfd_elf_default_action_discarded
2343 (struct bfd_section
*);
2344 extern struct bfd_section
*_bfd_elf_tls_setup
2345 (bfd
*, struct bfd_link_info
*);
2347 extern bfd_boolean _bfd_elf_link_create_dynamic_sections
2348 (bfd
*, struct bfd_link_info
*);
2349 extern bfd_boolean _bfd_elf_omit_section_dynsym_default
2350 (bfd
*, struct bfd_link_info
*, asection
*);
2351 extern bfd_boolean _bfd_elf_omit_section_dynsym_all
2352 (bfd
*, struct bfd_link_info
*, asection
*);
2353 extern bfd_boolean _bfd_elf_create_dynamic_sections
2354 (bfd
*, struct bfd_link_info
*);
2355 extern bfd_boolean _bfd_elf_create_got_section
2356 (bfd
*, struct bfd_link_info
*);
2357 extern asection
*_bfd_elf_section_for_symbol
2358 (struct elf_reloc_cookie
*, unsigned long, bfd_boolean
);
2359 extern struct elf_link_hash_entry
*_bfd_elf_define_linkage_sym
2360 (bfd
*, struct bfd_link_info
*, asection
*, const char *);
2361 extern void _bfd_elf_init_1_index_section
2362 (bfd
*, struct bfd_link_info
*);
2363 extern void _bfd_elf_init_2_index_sections
2364 (bfd
*, struct bfd_link_info
*);
2366 extern bfd_boolean _bfd_elfcore_make_pseudosection
2367 (bfd
*, char *, size_t, ufile_ptr
);
2368 extern char *_bfd_elfcore_strndup
2369 (bfd
*, char *, size_t);
2371 extern Elf_Internal_Rela
*_bfd_elf_link_read_relocs
2372 (bfd
*, asection
*, void *, Elf_Internal_Rela
*, bfd_boolean
);
2374 extern bfd_boolean _bfd_elf_link_output_relocs
2375 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
2376 struct elf_link_hash_entry
**);
2378 extern bfd_boolean _bfd_elf_adjust_dynamic_copy
2379 (struct bfd_link_info
*, struct elf_link_hash_entry
*, asection
*);
2381 extern bfd_boolean _bfd_elf_dynamic_symbol_p
2382 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2384 extern bfd_boolean _bfd_elf_symbol_refs_local_p
2385 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2387 extern bfd_reloc_status_type bfd_elf_perform_complex_relocation
2388 (bfd
*, asection
*, bfd_byte
*, Elf_Internal_Rela
*, bfd_vma
);
2390 extern bfd_boolean _bfd_elf_setup_sections
2393 extern struct bfd_link_hash_entry
*bfd_elf_define_start_stop
2394 (struct bfd_link_info
*, const char *, asection
*);
2396 extern bfd_boolean
_bfd_elf_init_file_header (bfd
*, struct bfd_link_info
*);
2398 extern bfd_boolean
_bfd_elf_final_write_processing (bfd
*);
2400 extern const bfd_target
*bfd_elf32_object_p
2402 extern const bfd_target
*bfd_elf32_core_file_p
2404 extern char *bfd_elf32_core_file_failing_command
2406 extern int bfd_elf32_core_file_failing_signal
2408 extern bfd_boolean bfd_elf32_core_file_matches_executable_p
2410 extern int bfd_elf32_core_file_pid
2412 extern bfd_boolean _bfd_elf32_core_find_build_id
2415 extern bfd_boolean bfd_elf32_swap_symbol_in
2416 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2417 extern void bfd_elf32_swap_symbol_out
2418 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2419 extern void bfd_elf32_swap_reloc_in
2420 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2421 extern void bfd_elf32_swap_reloc_out
2422 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2423 extern void bfd_elf32_swap_reloca_in
2424 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2425 extern void bfd_elf32_swap_reloca_out
2426 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2427 extern void bfd_elf32_swap_phdr_in
2428 (bfd
*, const Elf32_External_Phdr
*, Elf_Internal_Phdr
*);
2429 extern void bfd_elf32_swap_phdr_out
2430 (bfd
*, const Elf_Internal_Phdr
*, Elf32_External_Phdr
*);
2431 extern void bfd_elf32_swap_dyn_in
2432 (bfd
*, const void *, Elf_Internal_Dyn
*);
2433 extern void bfd_elf32_swap_dyn_out
2434 (bfd
*, const Elf_Internal_Dyn
*, void *);
2435 extern long bfd_elf32_slurp_symbol_table
2436 (bfd
*, asymbol
**, bfd_boolean
);
2437 extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
2439 extern int bfd_elf32_write_out_phdrs
2440 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2441 extern bfd_boolean bfd_elf32_checksum_contents
2442 (bfd
* , void (*) (const void *, size_t, void *), void *);
2443 extern void bfd_elf32_write_relocs
2444 (bfd
*, asection
*, void *);
2445 extern bfd_boolean bfd_elf32_slurp_reloc_table
2446 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2448 extern const bfd_target
*bfd_elf64_object_p
2450 extern const bfd_target
*bfd_elf64_core_file_p
2452 extern char *bfd_elf64_core_file_failing_command
2454 extern int bfd_elf64_core_file_failing_signal
2456 extern bfd_boolean bfd_elf64_core_file_matches_executable_p
2458 extern int bfd_elf64_core_file_pid
2460 extern bfd_boolean _bfd_elf64_core_find_build_id
2463 extern bfd_boolean bfd_elf64_swap_symbol_in
2464 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2465 extern void bfd_elf64_swap_symbol_out
2466 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2467 extern void bfd_elf64_swap_reloc_in
2468 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2469 extern void bfd_elf64_swap_reloc_out
2470 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2471 extern void bfd_elf64_swap_reloca_in
2472 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2473 extern void bfd_elf64_swap_reloca_out
2474 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2475 extern void bfd_elf64_swap_phdr_in
2476 (bfd
*, const Elf64_External_Phdr
*, Elf_Internal_Phdr
*);
2477 extern void bfd_elf64_swap_phdr_out
2478 (bfd
*, const Elf_Internal_Phdr
*, Elf64_External_Phdr
*);
2479 extern void bfd_elf64_swap_dyn_in
2480 (bfd
*, const void *, Elf_Internal_Dyn
*);
2481 extern void bfd_elf64_swap_dyn_out
2482 (bfd
*, const Elf_Internal_Dyn
*, void *);
2483 extern long bfd_elf64_slurp_symbol_table
2484 (bfd
*, asymbol
**, bfd_boolean
);
2485 extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
2487 extern int bfd_elf64_write_out_phdrs
2488 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2489 extern bfd_boolean bfd_elf64_checksum_contents
2490 (bfd
* , void (*) (const void *, size_t, void *), void *);
2491 extern void bfd_elf64_write_relocs
2492 (bfd
*, asection
*, void *);
2493 extern bfd_boolean bfd_elf64_slurp_reloc_table
2494 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2496 extern bfd_boolean _bfd_elf_default_relocs_compatible
2497 (const bfd_target
*, const bfd_target
*);
2499 extern bfd_boolean _bfd_elf_relocs_compatible
2500 (const bfd_target
*, const bfd_target
*);
2501 extern bfd_boolean _bfd_elf_notice_as_needed
2502 (bfd
*, struct bfd_link_info
*, enum notice_asneeded_action
);
2504 extern struct elf_link_hash_entry
*_bfd_elf_archive_symbol_lookup
2505 (bfd
*, struct bfd_link_info
*, const char *);
2506 extern bfd_boolean bfd_elf_link_add_symbols
2507 (bfd
*, struct bfd_link_info
*);
2508 extern bfd_boolean _bfd_elf_add_dynamic_entry
2509 (struct bfd_link_info
*, bfd_vma
, bfd_vma
);
2510 extern bfd_boolean _bfd_elf_link_check_relocs
2511 (bfd
*, struct bfd_link_info
*);
2513 extern bfd_boolean bfd_elf_link_record_dynamic_symbol
2514 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2516 extern int bfd_elf_link_record_local_dynamic_symbol
2517 (struct bfd_link_info
*, bfd
*, long);
2519 extern bfd_boolean _bfd_elf_close_and_cleanup
2522 extern bfd_boolean _bfd_elf_common_definition
2523 (Elf_Internal_Sym
*);
2525 extern unsigned int _bfd_elf_common_section_index
2528 extern asection
*_bfd_elf_common_section
2531 extern bfd_vma _bfd_elf_default_got_elt_size
2532 (bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd
*,
2535 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
2536 (bfd
*, arelent
*, struct bfd_symbol
*, void *,
2537 asection
*, bfd
*, char **);
2539 extern bfd_boolean bfd_elf_final_link
2540 (bfd
*, struct bfd_link_info
*);
2542 extern void _bfd_elf_gc_keep
2543 (struct bfd_link_info
*info
);
2545 extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
2546 (struct elf_link_hash_entry
*h
, void *inf
);
2548 extern bfd_boolean bfd_elf_gc_sections
2549 (bfd
*, struct bfd_link_info
*);
2551 extern bfd_boolean bfd_elf_gc_record_vtinherit
2552 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2554 extern bfd_boolean bfd_elf_gc_record_vtentry
2555 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2557 extern asection
*_bfd_elf_gc_mark_hook
2558 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
2559 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
2561 extern asection
*_bfd_elf_gc_mark_rsec
2562 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2563 struct elf_reloc_cookie
*, bfd_boolean
*);
2565 extern bfd_boolean _bfd_elf_gc_mark_reloc
2566 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2567 struct elf_reloc_cookie
*);
2569 extern bfd_boolean _bfd_elf_gc_mark_fdes
2570 (struct bfd_link_info
*, asection
*, asection
*, elf_gc_mark_hook_fn
,
2571 struct elf_reloc_cookie
*);
2573 extern bfd_boolean _bfd_elf_gc_mark
2574 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
);
2576 extern bfd_boolean _bfd_elf_gc_mark_extra_sections
2577 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
2579 extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
2580 (bfd
*, struct bfd_link_info
*);
2582 extern bfd_boolean bfd_elf_gc_common_final_link
2583 (bfd
*, struct bfd_link_info
*);
2585 extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
2588 extern struct elf_segment_map
* _bfd_elf_make_dynamic_segment
2589 (bfd
*, asection
*);
2591 extern bfd_boolean _bfd_elf_map_sections_to_segments
2592 (bfd
*, struct bfd_link_info
*);
2594 extern bfd_boolean
_bfd_elf_is_function_type (unsigned int);
2596 extern bfd_size_type
_bfd_elf_maybe_function_sym (const asymbol
*, asection
*,
2599 extern asection
*_bfd_elf_plt_get_reloc_section (bfd
*, const char *);
2601 extern int bfd_elf_get_default_section_type (flagword
);
2603 extern bfd_boolean bfd_elf_lookup_section_flags
2604 (struct bfd_link_info
*, struct flag_info
*, asection
*);
2606 extern Elf_Internal_Phdr
* _bfd_elf_find_segment_containing_section
2607 (bfd
* abfd
, asection
* section
);
2609 /* PowerPC @tls opcode transform/validate. */
2610 extern unsigned int _bfd_elf_ppc_at_tls_transform
2611 (unsigned int, unsigned int);
2612 /* PowerPC @tprel opcode transform/validate. */
2613 extern unsigned int _bfd_elf_ppc_at_tprel_transform
2614 (unsigned int, unsigned int);
2615 /* PowerPC elf_object_p tweak. */
2616 extern bfd_boolean
_bfd_elf_ppc_set_arch (bfd
*);
2617 /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */
2618 extern bfd_boolean _bfd_elf_ppc_merge_fp_attributes
2619 (bfd
*, struct bfd_link_info
*);
2621 /* Return an upper bound on the number of bytes required to store a
2622 copy of ABFD's program header table entries. Return -1 if an error
2623 occurs; bfd_get_error will return an appropriate code. */
2624 extern long bfd_get_elf_phdr_upper_bound
2627 /* Copy ABFD's program header table entries to *PHDRS. The entries
2628 will be stored as an array of Elf_Internal_Phdr structures, as
2629 defined in include/elf/internal.h. To find out how large the
2630 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
2632 Return the number of program header table entries read, or -1 if an
2633 error occurs; bfd_get_error will return an appropriate code. */
2634 extern int bfd_get_elf_phdrs
2635 (bfd
*abfd
, void *phdrs
);
2637 /* Exported interface for writing elf corefile notes. */
2638 extern char *elfcore_write_note
2639 (bfd
*, char *, int *, const char *, int, const void *, int);
2640 extern char *elfcore_write_prpsinfo
2641 (bfd
*, char *, int *, const char *, const char *);
2642 extern char *elfcore_write_prstatus
2643 (bfd
*, char *, int *, long, int, const void *);
2644 extern char * elfcore_write_pstatus
2645 (bfd
*, char *, int *, long, int, const void *);
2646 extern char *elfcore_write_prfpreg
2647 (bfd
*, char *, int *, const void *, int);
2648 extern char *elfcore_write_prxfpreg
2649 (bfd
*, char *, int *, const void *, int);
2650 extern char *elfcore_write_xstatereg
2651 (bfd
*, char *, int *, const void *, int);
2652 extern char *elfcore_write_ppc_vmx
2653 (bfd
*, char *, int *, const void *, int);
2654 extern char *elfcore_write_ppc_vsx
2655 (bfd
*, char *, int *, const void *, int);
2656 extern char *elfcore_write_ppc_tar
2657 (bfd
*, char *, int *, const void *, int);
2658 extern char *elfcore_write_ppc_ppr
2659 (bfd
*, char *, int *, const void *, int);
2660 extern char *elfcore_write_ppc_dscr
2661 (bfd
*, char *, int *, const void *, int);
2662 extern char *elfcore_write_ppc_ebb
2663 (bfd
*, char *, int *, const void *, int);
2664 extern char *elfcore_write_ppc_pmu
2665 (bfd
*, char *, int *, const void *, int);
2666 extern char *elfcore_write_ppc_tm_cgpr
2667 (bfd
*, char *, int *, const void *, int);
2668 extern char *elfcore_write_ppc_tm_cfpr
2669 (bfd
*, char *, int *, const void *, int);
2670 extern char *elfcore_write_ppc_tm_cvmx
2671 (bfd
*, char *, int *, const void *, int);
2672 extern char *elfcore_write_ppc_tm_cvsx
2673 (bfd
*, char *, int *, const void *, int);
2674 extern char *elfcore_write_ppc_tm_spr
2675 (bfd
*, char *, int *, const void *, int);
2676 extern char *elfcore_write_ppc_tm_ctar
2677 (bfd
*, char *, int *, const void *, int);
2678 extern char *elfcore_write_ppc_tm_cppr
2679 (bfd
*, char *, int *, const void *, int);
2680 extern char *elfcore_write_ppc_tm_cdscr
2681 (bfd
*, char *, int *, const void *, int);
2682 extern char *elfcore_write_s390_timer
2683 (bfd
*, char *, int *, const void *, int);
2684 extern char *elfcore_write_s390_todcmp
2685 (bfd
*, char *, int *, const void *, int);
2686 extern char *elfcore_write_s390_todpreg
2687 (bfd
*, char *, int *, const void *, int);
2688 extern char *elfcore_write_s390_ctrs
2689 (bfd
*, char *, int *, const void *, int);
2690 extern char *elfcore_write_s390_prefix
2691 (bfd
*, char *, int *, const void *, int);
2692 extern char *elfcore_write_s390_last_break
2693 (bfd
*, char *, int *, const void *, int);
2694 extern char *elfcore_write_s390_system_call
2695 (bfd
*, char *, int *, const void *, int);
2696 extern char *elfcore_write_s390_tdb
2697 (bfd
*, char *, int *, const void *, int);
2698 extern char *elfcore_write_s390_vxrs_low
2699 (bfd
*, char *, int *, const void *, int);
2700 extern char *elfcore_write_s390_vxrs_high
2701 (bfd
*, char *, int *, const void *, int);
2702 extern char *elfcore_write_s390_gs_cb
2703 (bfd
*, char *, int *, const void *, int);
2704 extern char *elfcore_write_s390_gs_bc
2705 (bfd
*, char *, int *, const void *, int);
2706 extern char *elfcore_write_arm_vfp
2707 (bfd
*, char *, int *, const void *, int);
2708 extern char *elfcore_write_aarch_tls
2709 (bfd
*, char *, int *, const void *, int);
2710 extern char *elfcore_write_aarch_hw_break
2711 (bfd
*, char *, int *, const void *, int);
2712 extern char *elfcore_write_aarch_hw_watch
2713 (bfd
*, char *, int *, const void *, int);
2714 extern char *elfcore_write_aarch_sve
2715 (bfd
*, char *, int *, const void *, int);
2716 extern char *elfcore_write_aarch_pauth
2717 (bfd
*, char *, int *, const void *, int);
2718 extern char *elfcore_write_lwpstatus
2719 (bfd
*, char *, int *, long, int, const void *);
2720 extern char *elfcore_write_register_note
2721 (bfd
*, char *, int *, const char *, const void *, int);
2723 /* Internal structure which holds information to be included in the
2724 PRPSINFO section of Linux core files.
2726 This is an "internal" structure in the sense that it should be used
2727 to pass information to BFD (via the `elfcore_write_linux_prpsinfo'
2728 function), so things like endianess shouldn't be an issue. This
2729 structure will eventually be converted in one of the
2730 `elf_external_linux_*' structures and written out to an output bfd
2731 by one of the functions declared below. */
2733 struct elf_internal_linux_prpsinfo
2735 char pr_state
; /* Numeric process state. */
2736 char pr_sname
; /* Char for pr_state. */
2737 char pr_zomb
; /* Zombie. */
2738 char pr_nice
; /* Nice val. */
2739 unsigned long pr_flag
; /* Flags. */
2740 unsigned int pr_uid
;
2741 unsigned int pr_gid
;
2742 int pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
2743 char pr_fname
[16 + 1]; /* Filename of executable. */
2744 char pr_psargs
[80 + 1]; /* Initial part of arg list. */
2747 /* Linux/most 32-bit archs. */
2748 extern char *elfcore_write_linux_prpsinfo32
2749 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2751 /* Linux/most 64-bit archs. */
2752 extern char *elfcore_write_linux_prpsinfo64
2753 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2755 extern bfd
*_bfd_elf32_bfd_from_remote_memory
2756 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2757 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2758 extern bfd
*_bfd_elf64_bfd_from_remote_memory
2759 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2760 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2762 extern bfd_vma
bfd_elf_obj_attr_size (bfd
*);
2763 extern void bfd_elf_set_obj_attr_contents (bfd
*, bfd_byte
*, bfd_vma
);
2764 extern int bfd_elf_get_obj_attr_int (bfd
*, int, unsigned int);
2765 extern void bfd_elf_add_obj_attr_int (bfd
*, int, unsigned int, unsigned int);
2766 #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
2767 bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2768 extern void bfd_elf_add_obj_attr_string (bfd
*, int, unsigned int, const char *);
2769 #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
2770 bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2771 extern void bfd_elf_add_obj_attr_int_string (bfd
*, int, unsigned int,
2772 unsigned int, const char *);
2773 #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
2774 bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
2777 extern char *_bfd_elf_attr_strdup (bfd
*, const char *);
2778 extern void _bfd_elf_copy_obj_attributes (bfd
*, bfd
*);
2779 extern int _bfd_elf_obj_attrs_arg_type (bfd
*, int, unsigned int);
2780 extern void _bfd_elf_parse_attributes (bfd
*, Elf_Internal_Shdr
*);
2781 extern bfd_boolean _bfd_elf_merge_object_attributes
2782 (bfd
*, struct bfd_link_info
*);
2783 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_low (bfd
*, bfd
*, int);
2784 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_list (bfd
*, bfd
*);
2785 extern Elf_Internal_Shdr
*_bfd_elf_single_rel_hdr (asection
*sec
);
2786 extern bfd_boolean
elf_read_notes (bfd
*, file_ptr
, bfd_size_type
, size_t);
2788 extern bfd_boolean _bfd_elf_parse_gnu_properties
2789 (bfd
*, Elf_Internal_Note
*);
2790 extern elf_property
* _bfd_elf_get_property
2791 (bfd
*, unsigned int, unsigned int);
2792 extern bfd
*_bfd_elf_link_setup_gnu_properties
2793 (struct bfd_link_info
*);
2794 extern bfd_size_type _bfd_elf_convert_gnu_property_size
2796 extern bfd_boolean _bfd_elf_convert_gnu_properties
2797 (bfd
*, asection
*, bfd
*, bfd_byte
**, bfd_size_type
*);
2799 /* The linker may need to keep track of the number of relocs that it
2800 decides to copy as dynamic relocs in check_relocs for each symbol.
2801 This is so that it can later discard them if they are found to be
2802 unnecessary. We can store the information in a field extending the
2803 regular ELF linker hash table. */
2805 struct elf_dyn_relocs
2807 struct elf_dyn_relocs
*next
;
2809 /* The input section of the reloc. */
2812 /* Total number of relocs copied for the input section. */
2813 bfd_size_type count
;
2815 /* Number of pc-relative relocs copied for the input section. */
2816 bfd_size_type pc_count
;
2819 extern bfd_boolean _bfd_elf_create_ifunc_sections
2820 (bfd
*, struct bfd_link_info
*);
2821 extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
2822 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2823 struct elf_dyn_relocs
**, bfd_boolean
*, unsigned int,
2824 unsigned int, unsigned int, bfd_boolean
);
2826 extern void elf_append_rela (bfd
*, asection
*, Elf_Internal_Rela
*);
2827 extern void elf_append_rel (bfd
*, asection
*, Elf_Internal_Rela
*);
2829 extern bfd_vma
elf64_r_info (bfd_vma
, bfd_vma
);
2830 extern bfd_vma
elf64_r_sym (bfd_vma
);
2831 extern bfd_vma
elf32_r_info (bfd_vma
, bfd_vma
);
2832 extern bfd_vma
elf32_r_sym (bfd_vma
);
2834 extern bfd_boolean
is_debuginfo_file (bfd
*);
2836 /* Large common section. */
2837 extern asection _bfd_elf_large_com_section
;
2839 /* Hash for local symbol with the first section id, ID, in the input
2840 file and the local symbol index, SYM. */
2841 #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
2842 (((((ID) & 0xffU) << 24) | (((ID) & 0xff00) << 8)) \
2843 ^ (SYM) ^ (((ID) & 0xffff0000U) >> 16))
2845 /* This is the condition under which finish_dynamic_symbol will be called.
2846 If our finish_dynamic_symbol isn't called, we'll need to do something
2847 about initializing any .plt and .got entries in relocate_section. */
2848 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
2850 && ((SHARED) || !(H)->forced_local) \
2851 && ((H)->dynindx != -1 || (H)->forced_local))
2853 /* This macro is to avoid lots of duplicated code in the body
2854 of xxx_relocate_section() in the various elfxx-xxxx.c files. */
2855 #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \
2856 r_symndx, symtab_hdr, sym_hashes, \
2857 h, sec, relocation, \
2858 unresolved_reloc, warned, ignored) \
2861 /* It seems this can happen with erroneous or unsupported \
2862 input (mixing a.out and elf in an archive, for example.) */ \
2863 if (sym_hashes == NULL) \
2866 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \
2868 if (info->wrap_hash != NULL \
2869 && (input_section->flags & SEC_DEBUGGING) != 0) \
2870 h = ((struct elf_link_hash_entry *) \
2871 unwrap_hash_lookup (info, input_bfd, &h->root)); \
2873 while (h->root.type == bfd_link_hash_indirect \
2874 || h->root.type == bfd_link_hash_warning) \
2875 h = (struct elf_link_hash_entry *) h->root.u.i.link; \
2879 unresolved_reloc = FALSE; \
2881 if (h->root.type == bfd_link_hash_defined \
2882 || h->root.type == bfd_link_hash_defweak) \
2884 sec = h->root.u.def.section; \
2886 || sec->output_section == NULL) \
2887 /* Set a flag that will be cleared later if we find a \
2888 relocation value for this symbol. output_section \
2889 is typically NULL for symbols satisfied by a shared \
2891 unresolved_reloc = TRUE; \
2893 relocation = (h->root.u.def.value \
2894 + sec->output_section->vma \
2895 + sec->output_offset); \
2897 else if (h->root.type == bfd_link_hash_undefweak) \
2899 else if (info->unresolved_syms_in_objects == RM_IGNORE \
2900 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \
2902 else if (!bfd_link_relocatable (info)) \
2905 err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \
2906 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \
2907 (*info->callbacks->undefined_symbol) (info, \
2908 h->root.root.string, \
2911 rel->r_offset, err); \
2914 (void) unresolved_reloc; \
2920 /* This macro is to avoid lots of duplicated code in the body of the
2921 loop over relocations in xxx_relocate_section() in the various
2924 Handle relocations against symbols from removed linkonce sections,
2925 or sections discarded by a linker script. When doing a relocatable
2926 link, we remove such relocations. Otherwise, we just want the
2927 section contents zeroed and avoid any special processing. */
2928 #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
2929 rel, count, relend, \
2930 howto, index, contents) \
2933 _bfd_clear_contents (howto, input_bfd, input_section, \
2934 contents, rel[index].r_offset); \
2936 if (bfd_link_relocatable (info) \
2937 && (input_section->flags & SEC_DEBUGGING)) \
2939 /* Only remove relocations in debug sections since other \
2940 sections may require relocations. */ \
2941 Elf_Internal_Shdr *rel_hdr; \
2943 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
2945 /* Avoid empty output section. */ \
2946 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
2948 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2949 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
2950 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2952 memmove (rel, rel + count, \
2953 (relend - rel - count) * sizeof (*rel)); \
2955 input_section->reloc_count -= count; \
2962 for (i_ = 0; i_ < count; i_++) \
2964 rel[i_].r_info = 0; \
2965 rel[i_].r_addend = 0; \
2971 /* Will a symbol be bound to the definition within the shared
2972 library, if any. A unique symbol can never be bound locally. */
2973 #define SYMBOLIC_BIND(INFO, H) \
2974 (!(H)->unique_global \
2975 && ((INFO)->symbolic \
2976 || (H)->start_stop \
2977 || ((INFO)->dynamic && !(H)->dynamic)))
2979 /* Determine if a section contains CTF data, using its name. */
2980 static inline bfd_boolean
2981 bfd_section_is_ctf (const asection
*sec
)
2983 const char *name
= bfd_section_name (sec
);
2984 return strncmp (name
, ".ctf", 4) == 0 && (name
[4] == 0 || name
[4] == '.');
2990 #endif /* _LIBELF_H_ */