1 /* BFD back-end data structures for ELF files.
2 Copyright (C) 1992-2020 Free Software Foundation, Inc.
3 Copyright (C) 2019-2020 Advanced Micro Devices, Inc. All rights reserved.
4 Written by Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
26 #include "elf/common.h"
27 #include "elf/external.h"
28 #include "elf/internal.h"
35 /* The number of entries in a section is its size divided by the size
36 of a single entry. This is normally only applicable to reloc and
37 symbol table sections.
38 PR 9934: It is possible to have relocations that do not refer to
39 symbols, thus it is also possible to have a relocation section in
40 an object file, but no symbol table. */
41 #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0)
43 /* If size isn't specified as 64 or 32, NAME macro should fail. */
46 #define NAME(x, y) x ## 64 ## _ ## y
49 #define NAME(x, y) x ## 32 ## _ ## y
54 #define NAME(x, y) x ## NOSIZE ## _ ## y
57 #define ElfNAME(X) NAME(Elf,X)
58 #define elfNAME(X) NAME(elf,X)
60 /* Information held for an ELF symbol. The first field is the
61 corresponding asymbol. Every symbol is an ELF file is actually a
62 pointer to this structure, although it is often handled as a
63 pointer to an asymbol. */
69 /* ELF symbol information. */
70 Elf_Internal_Sym internal_elf_sym
;
71 /* Backend specific information. */
74 unsigned int hppa_arg_reloc
;
80 /* Version information. This is from an Elf_Internal_Versym
81 structure in a SHT_GNU_versym section. It is zero if there is no
82 version information. */
83 unsigned short version
;
87 struct elf_strtab_hash
;
93 bfd_signed_vma refcount
;
95 struct got_entry
*glist
;
96 struct plt_entry
*plist
;
99 struct elf_link_virtual_table_entry
101 /* Virtual table entry use information. This array is nominally of size
102 size/sizeof(target_void_pointer), though we have to be able to assume
103 and track a size while the symbol is still undefined. It is indexed
104 via offset/sizeof(target_void_pointer). */
108 /* Virtual table derivation info. */
109 struct elf_link_hash_entry
*parent
;
112 /* ELF symbol version. */
113 enum elf_symbol_version
121 /* ELF linker hash table entries. */
123 struct elf_link_hash_entry
125 struct bfd_link_hash_entry root
;
127 /* Symbol index in output file. This is initialized to -1. It is
128 set to -2 if the symbol is used by a reloc. It is set to -3 if
129 this symbol is defined in a discarded section. */
132 /* Symbol index as a dynamic symbol. Initialized to -1, and remains
133 -1 if this is not a dynamic symbol. */
134 /* ??? Note that this is consistently used as a synonym for tests
135 against whether we can perform various simplifying transformations
136 to the code. (E.g. changing a pc-relative jump to a PLT entry
137 into a pc-relative jump to the target function.) That test, which
138 is often relatively complex, and someplaces wrong or incomplete,
139 should really be replaced by a predicate in elflink.c.
141 End result: this field -1 does not indicate that the symbol is
142 not in the dynamic symbol table, but rather that the symbol is
143 not visible outside this DSO. */
146 /* If this symbol requires an entry in the global offset table, the
147 processor specific backend uses this field to track usage and
148 final offset. Two schemes are supported: The first assumes that
149 a symbol may only have one GOT entry, and uses REFCOUNT until
150 size_dynamic_sections, at which point the contents of the .got is
151 fixed. Afterward, if OFFSET is -1, then the symbol does not
152 require a global offset table entry. The second scheme allows
153 multiple GOT entries per symbol, managed via a linked list
154 pointed to by GLIST. */
155 union gotplt_union got
;
157 /* Same, but tracks a procedure linkage table entry. */
158 union gotplt_union plt
;
163 /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
164 unsigned int type
: 8;
166 /* Symbol st_other value, symbol visibility. */
167 unsigned int other
: 8;
169 /* The symbol's st_target_internal value (see Elf_Internal_Sym). */
170 unsigned int target_internal
: 8;
172 /* Symbol is referenced by a non-shared object (other than the object
173 in which it is defined). */
174 unsigned int ref_regular
: 1;
175 /* Symbol is defined by a non-shared object. */
176 unsigned int def_regular
: 1;
177 /* Symbol is referenced by a shared object. */
178 unsigned int ref_dynamic
: 1;
179 /* Symbol is defined by a shared object. */
180 unsigned int def_dynamic
: 1;
181 /* Symbol has a non-weak reference from a non-shared object (other than
182 the object in which it is defined). */
183 unsigned int ref_regular_nonweak
: 1;
184 /* Dynamic symbol has been adjustd. */
185 unsigned int dynamic_adjusted
: 1;
186 /* Symbol needs a copy reloc. */
187 unsigned int needs_copy
: 1;
188 /* Symbol needs a procedure linkage table entry. */
189 unsigned int needs_plt
: 1;
190 /* Symbol appears in a non-ELF input file. */
191 unsigned int non_elf
: 1;
192 /* Symbol version information. */
193 ENUM_BITFIELD (elf_symbol_version
) versioned
: 2;
194 /* Symbol was forced to local scope due to a version script file. */
195 unsigned int forced_local
: 1;
196 /* Symbol was forced to be dynamic due to a version script file. */
197 unsigned int dynamic
: 1;
198 /* Symbol was marked during garbage collection. */
199 unsigned int mark
: 1;
200 /* Symbol is referenced by a non-GOT/non-PLT relocation. This is
201 not currently set by all the backends. */
202 unsigned int non_got_ref
: 1;
203 /* Symbol has a definition in a shared object.
204 FIXME: There is no real need for this field if def_dynamic is never
205 cleared and all places that test def_dynamic also test def_regular. */
206 unsigned int dynamic_def
: 1;
207 /* Symbol has a non-weak reference from a shared object. */
208 unsigned int ref_dynamic_nonweak
: 1;
209 /* Symbol is referenced with a relocation where C/C++ pointer equality
211 unsigned int pointer_equality_needed
: 1;
212 /* Symbol is a unique global symbol. */
213 unsigned int unique_global
: 1;
214 /* Symbol is defined by a shared library with non-default visibility
215 in a read/write section. */
216 unsigned int protected_def
: 1;
217 /* Symbol is __start_SECNAME or __stop_SECNAME to mark section
219 unsigned int start_stop
: 1;
220 /* Symbol is or was a weak defined symbol from a dynamic object with
221 a strong defined symbol alias. U.ALIAS points to a list of aliases,
222 the definition having is_weakalias clear. */
223 unsigned int is_weakalias
: 1;
225 /* String table index in .dynstr if this is a dynamic symbol. */
226 unsigned long dynstr_index
;
230 /* Points to a circular list of non-function symbol aliases. */
231 struct elf_link_hash_entry
*alias
;
233 /* Hash value of the name computed using the ELF hash function.
234 Used part way through size_dynamic_sections, after we've finished
236 unsigned long elf_hash_value
;
239 /* Version information. */
242 /* This field is used for a symbol which is not defined in a
243 regular object. It points to the version information read in
244 from the dynamic object. */
245 Elf_Internal_Verdef
*verdef
;
246 /* This field is used for a symbol which is defined in a regular
247 object. It is set up in size_dynamic_sections. It points to
248 the version information we should write out for this symbol. */
249 struct bfd_elf_version_tree
*vertree
;
254 /* For __start_SECNAME and __stop_SECNAME symbols, record the first
255 input section whose section name is SECNAME. */
256 asection
*start_stop_section
;
258 /* Vtable information. */
259 struct elf_link_virtual_table_entry
*vtable
;
263 /* Return the strong definition for a weak symbol with aliases. */
265 static inline struct elf_link_hash_entry
*
266 weakdef (struct elf_link_hash_entry
*h
)
268 while (h
->is_weakalias
)
273 /* Will references to this symbol always reference the symbol
275 #define SYMBOL_REFERENCES_LOCAL(INFO, H) \
276 _bfd_elf_symbol_refs_local_p (H, INFO, 0)
278 /* Will _calls_ to this symbol always call the version in this object? */
279 #define SYMBOL_CALLS_LOCAL(INFO, H) \
280 _bfd_elf_symbol_refs_local_p (H, INFO, 1)
282 /* Whether an undefined weak symbol should resolve to its link-time
283 value, even in PIC or PIE objects. */
284 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
285 ((H)->root.type == bfd_link_hash_undefweak \
286 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
287 || (INFO)->dynamic_undefined_weak == 0))
289 /* Common symbols that are turned into definitions don't have the
290 DEF_REGULAR flag set, so they might appear to be undefined.
291 Symbols defined in linker scripts also don't have DEF_REGULAR set. */
292 #define ELF_COMMON_DEF_P(H) \
294 && !(H)->def_dynamic \
295 && (H)->root.type == bfd_link_hash_defined)
297 /* Records local symbols to be emitted in the dynamic symbol table. */
299 struct elf_link_local_dynamic_entry
301 struct elf_link_local_dynamic_entry
*next
;
303 /* The input bfd this symbol came from. */
306 /* The index of the local symbol being copied. */
309 /* The index in the outgoing dynamic symbol table. */
312 /* A copy of the input symbol. */
313 Elf_Internal_Sym isym
;
316 struct elf_link_loaded_list
318 struct elf_link_loaded_list
*next
;
322 /* Structures used by the eh_frame optimization code. */
327 /* If REMOVED == 1, this is the CIE that the FDE originally used.
328 The CIE belongs to the same .eh_frame input section as the FDE.
330 If REMOVED == 0, this is the CIE that we have chosen to use for
331 the output FDE. The CIE's REMOVED field is also 0, but the CIE
332 might belong to a different .eh_frame input section from the FDE.
334 May be NULL to signify that the FDE should be discarded. */
335 struct eh_cie_fde
*cie_inf
;
336 struct eh_cie_fde
*next_for_section
;
339 /* CIEs have three states:
341 - REMOVED && !MERGED: Slated for removal because we haven't yet
342 proven that an FDE needs it. FULL_CIE, if nonnull, points to
343 more detailed information about the CIE.
345 - REMOVED && MERGED: We have merged this CIE with MERGED_WITH,
346 which may not belong to the same input section.
348 - !REMOVED: We have decided to keep this CIE. SEC is the
349 .eh_frame input section that contains the CIE. */
351 struct cie
*full_cie
;
352 struct eh_cie_fde
*merged_with
;
356 /* The offset of the personality data from the start of the CIE,
357 or 0 if the CIE doesn't have any. */
358 unsigned int personality_offset
: 8;
360 /* Length of augmentation. aug_str_len is the length of the
361 string including null terminator. aug_data_len is the length
362 of the rest up to the initial insns. */
363 unsigned int aug_str_len
: 3;
364 unsigned int aug_data_len
: 5;
366 /* True if we have marked relocations associated with this CIE. */
367 unsigned int gc_mark
: 1;
369 /* True if we have decided to turn an absolute LSDA encoding into
370 a PC-relative one. */
371 unsigned int make_lsda_relative
: 1;
373 /* True if we have decided to turn an absolute personality
374 encoding into a PC-relative one. */
375 unsigned int make_per_encoding_relative
: 1;
377 /* True if the CIE contains personality data and if that
378 data uses a PC-relative encoding. Always true when
379 make_per_encoding_relative is. */
380 unsigned int per_encoding_relative
: 1;
382 /* True if the CIE contains personality data aligned to a
383 multiple of eight bytes. */
384 unsigned int per_encoding_aligned8
: 1;
386 /* True if we need to add an 'R' (FDE encoding) entry to the
387 CIE's augmentation data. */
388 unsigned int add_fde_encoding
: 1;
390 /* True if we have merged this CIE with another. */
391 unsigned int merged
: 1;
394 unsigned int pad1
: 9;
397 unsigned int reloc_index
;
400 unsigned int new_offset
;
401 unsigned int fde_encoding
: 8;
402 unsigned int lsda_encoding
: 8;
403 unsigned int lsda_offset
: 8;
405 /* True if this entry represents a CIE, false if it represents an FDE. */
406 unsigned int cie
: 1;
408 /* True if this entry is currently marked for removal. */
409 unsigned int removed
: 1;
411 /* True if we need to add a 'z' (augmentation size) entry to the CIE's
412 augmentation data, and an associated byte to each of the CIE's FDEs. */
413 unsigned int add_augmentation_size
: 1;
415 /* True if we have decided to convert absolute FDE relocations into
416 relative ones. This applies to the first relocation in the FDE,
417 which is against the code that the FDE describes. */
418 unsigned int make_relative
: 1;
421 unsigned int pad1
: 4;
423 unsigned int *set_loc
;
426 struct eh_frame_sec_info
430 struct eh_cie_fde entry
[1];
433 struct eh_frame_array_ent
442 #define DWARF2_EH_HDR 1
443 #define COMPACT_EH_HDR 2
445 /* Endian-neutral code indicating that a function cannot be unwound. */
446 #define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01
448 struct dwarf_eh_frame_hdr_info
451 unsigned int fde_count
;
452 /* TRUE if .eh_frame_hdr should contain the sorted search table.
453 We build it if we successfully read all .eh_frame input sections
454 and recognize them. */
456 struct eh_frame_array_ent
*array
;
459 struct compact_eh_frame_hdr_info
461 unsigned int allocated_entries
;
462 /* eh_frame_entry fragments. */
466 struct eh_frame_hdr_info
469 unsigned int array_count
;
470 bfd_boolean frame_hdr_is_compact
;
473 struct dwarf_eh_frame_hdr_info dwarf
;
474 struct compact_eh_frame_hdr_info compact
;
479 /* Enum used to identify target specific extensions to the elf_obj_tdata
480 and elf_link_hash_table structures. Note the enums deliberately start
481 from 1 so that we can detect an uninitialized field. The generic value
482 is last so that additions to this enum do not need to modify more than
486 AARCH64_ELF_DATA
= 1,
527 struct elf_sym_strtab
529 Elf_Internal_Sym sym
;
530 unsigned long dest_index
;
531 unsigned long destshndx_index
;
534 struct bfd_link_needed_list
536 struct bfd_link_needed_list
*next
;
541 /* ELF linker hash table. */
543 struct elf_link_hash_table
545 struct bfd_link_hash_table root
;
547 /* An identifier used to distinguish different target
548 specific extensions to this structure. */
549 enum elf_target_id hash_table_id
;
551 /* Whether we have created the special dynamic sections required
552 when linking against or generating a shared object. */
553 bfd_boolean dynamic_sections_created
;
555 /* Whether dynamic relocations are present. */
556 bfd_boolean dynamic_relocs
;
558 /* True if this target has relocatable executables, so needs dynamic
560 bfd_boolean is_relocatable_executable
;
562 /* The BFD used to hold special sections created by the linker.
563 This will be the first BFD found which requires these sections to
567 /* The value to use when initialising got.refcount/offset and
568 plt.refcount/offset in an elf_link_hash_entry. Set to zero when
569 the values are refcounts. Set to init_got_offset/init_plt_offset
570 in size_dynamic_sections when the values may be offsets. */
571 union gotplt_union init_got_refcount
;
572 union gotplt_union init_plt_refcount
;
574 /* The value to use for got.refcount/offset and plt.refcount/offset
575 when the values may be offsets. Normally (bfd_vma) -1. */
576 union gotplt_union init_got_offset
;
577 union gotplt_union init_plt_offset
;
579 /* The number of symbols found in the link which is intended for the
580 mandatory DT_SYMTAB tag (.dynsym section) in .dynamic section. */
581 bfd_size_type dynsymcount
;
582 bfd_size_type local_dynsymcount
;
584 /* The string table of dynamic symbols, which becomes the .dynstr
586 struct elf_strtab_hash
*dynstr
;
588 /* The number of symbol strings found in the link which must be put
589 into the .strtab section. */
590 bfd_size_type strtabcount
;
592 /* The array size of the symbol string table, which becomes the
594 bfd_size_type strtabsize
;
596 /* The array of strings, which becomes the .strtab section. */
597 struct elf_sym_strtab
*strtab
;
599 /* The number of buckets in the hash table in the .hash section.
600 This is based on the number of dynamic symbols. */
601 bfd_size_type bucketcount
;
603 /* A linked list of DT_NEEDED names found in dynamic objects
604 included in the link. */
605 struct bfd_link_needed_list
*needed
;
607 /* Sections in the output bfd that provides a section symbol
608 to be used by relocations emitted against local symbols.
609 Most targets will not use data_index_section. */
610 asection
*text_index_section
;
611 asection
*data_index_section
;
613 /* The _GLOBAL_OFFSET_TABLE_ symbol. */
614 struct elf_link_hash_entry
*hgot
;
616 /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */
617 struct elf_link_hash_entry
*hplt
;
619 /* The _DYNAMIC symbol. */
620 struct elf_link_hash_entry
*hdynamic
;
622 /* A pointer to information used to merge SEC_MERGE sections. */
625 /* Used to link stabs in sections. */
626 struct stab_info stab_info
;
628 /* Used by eh_frame code when editing .eh_frame. */
629 struct eh_frame_hdr_info eh_info
;
631 /* A linked list of local symbols to be added to .dynsym. */
632 struct elf_link_local_dynamic_entry
*dynlocal
;
634 /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
635 objects included in the link. */
636 struct bfd_link_needed_list
*runpath
;
638 /* Cached first output tls section and size of PT_TLS segment. */
640 bfd_size_type tls_size
;
642 /* A linked list of BFD's loaded in the link. */
643 struct elf_link_loaded_list
*loaded
;
645 /* Short-cuts to get to dynamic linker sections. */
654 asection
*sreldynrelro
;
662 /* Look up an entry in an ELF linker hash table. */
664 #define elf_link_hash_lookup(table, string, create, copy, follow) \
665 ((struct elf_link_hash_entry *) \
666 bfd_link_hash_lookup (&(table)->root, (string), (create), \
669 /* Traverse an ELF linker hash table. */
671 #define elf_link_hash_traverse(table, func, info) \
672 (bfd_link_hash_traverse \
674 (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
677 /* Get the ELF linker hash table from a link_info structure. */
679 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
681 #define elf_hash_table_id(table) ((table) -> hash_table_id)
683 /* Returns TRUE if the hash table is a struct elf_link_hash_table. */
684 #define is_elf_hash_table(htab) \
685 (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
687 /* Used by bfd_sym_from_r_symndx to cache a small number of local
689 #define LOCAL_SYM_CACHE_SIZE 32
693 unsigned long indx
[LOCAL_SYM_CACHE_SIZE
];
694 Elf_Internal_Sym sym
[LOCAL_SYM_CACHE_SIZE
];
697 /* Constant information held for an ELF backend. */
699 struct elf_size_info
{
700 unsigned char sizeof_ehdr
, sizeof_phdr
, sizeof_shdr
;
701 unsigned char sizeof_rel
, sizeof_rela
, sizeof_sym
, sizeof_dyn
, sizeof_note
;
703 /* The size of entries in the .hash section. */
704 unsigned char sizeof_hash_entry
;
706 /* The number of internal relocations to allocate per external
708 unsigned char int_rels_per_ext_rel
;
709 /* We use some fixed size arrays. This should be large enough to
710 handle all back-ends. */
711 #define MAX_INT_RELS_PER_EXT_REL 3
713 unsigned char arch_size
, log_file_align
;
714 unsigned char elfclass
, ev_current
;
715 int (*write_out_phdrs
)
716 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
718 (*write_shdrs_and_ehdr
) (bfd
*);
719 bfd_boolean (*checksum_contents
)
720 (bfd
* , void (*) (const void *, size_t, void *), void *);
722 (bfd
*, asection
*, void *);
723 bfd_boolean (*swap_symbol_in
)
724 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
725 void (*swap_symbol_out
)
726 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
727 bfd_boolean (*slurp_reloc_table
)
728 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
729 long (*slurp_symbol_table
)
730 (bfd
*, asymbol
**, bfd_boolean
);
732 (bfd
*, const void *, Elf_Internal_Dyn
*);
734 (bfd
*, const Elf_Internal_Dyn
*, void *);
736 /* This function is called to swap in a REL relocation. If an
737 external relocation corresponds to more than one internal
738 relocation, then all relocations are swapped in at once. */
739 void (*swap_reloc_in
)
740 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
742 /* This function is called to swap out a REL relocation. */
743 void (*swap_reloc_out
)
744 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
746 /* This function is called to swap in a RELA relocation. If an
747 external relocation corresponds to more than one internal
748 relocation, then all relocations are swapped in at once. */
749 void (*swap_reloca_in
)
750 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
752 /* This function is called to swap out a RELA relocation. */
753 void (*swap_reloca_out
)
754 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
757 #define elf_symbol_from(ABFD,S) \
758 (((S)->the_bfd != NULL \
759 && (S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
760 && (S)->the_bfd->tdata.elf_obj_data != 0) \
761 ? (elf_symbol_type *) (S) \
764 enum elf_reloc_type_class
{
766 reloc_class_relative
,
772 struct elf_reloc_cookie
774 Elf_Internal_Rela
*rels
, *rel
, *relend
;
775 Elf_Internal_Sym
*locsyms
;
779 struct elf_link_hash_entry
**sym_hashes
;
781 bfd_boolean bad_symtab
;
784 /* The level of IRIX compatibility we're striving for. */
792 /* Mapping of ELF section names and types. */
793 struct bfd_elf_special_section
796 unsigned int prefix_length
;
797 /* 0 means name must match PREFIX exactly.
798 -1 means name must start with PREFIX followed by an arbitrary string.
799 -2 means name must match PREFIX exactly or consist of PREFIX followed
800 by a dot then anything.
801 > 0 means name must start with the first PREFIX_LENGTH chars of
802 PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */
803 signed int suffix_length
;
808 enum action_discarded
814 typedef asection
* (*elf_gc_mark_hook_fn
)
815 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
816 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
818 enum elf_property_kind
820 /* A new property. */
821 property_unknown
= 0,
822 /* A property ignored by backend. */
824 /* A corrupt property reported by backend. */
826 /* A property should be removed due to property merge. */
828 /* A property which is a number. */
832 typedef struct elf_property
834 unsigned int pr_type
;
835 unsigned int pr_datasz
;
838 /* For property_number, this is a number. */
840 /* Add a new one if elf_property_kind is updated. */
842 enum elf_property_kind pr_kind
;
845 typedef struct elf_property_list
847 struct elf_property_list
*next
;
848 struct elf_property property
;
851 struct bfd_elf_section_reloc_data
;
853 struct elf_backend_data
855 /* The architecture for this backend. */
856 enum bfd_architecture arch
;
858 /* An identifier used to distinguish different target specific
859 extensions to elf_obj_tdata and elf_link_hash_table structures. */
860 enum elf_target_id target_id
;
862 /* The ELF machine code (EM_xxxx) for this backend. */
863 int elf_machine_code
;
868 /* The maximum page size for this backend. */
871 /* The minimum page size for this backend. An input object will not be
872 considered page aligned unless its sections are correctly aligned for
873 pages at least this large. May be smaller than maxpagesize. */
876 /* The common page size for this backend. */
877 bfd_vma commonpagesize
;
879 /* The value of commonpagesize to use when -z relro for this backend. */
880 bfd_vma relropagesize
;
882 /* The BFD flags applied to sections created for dynamic linking. */
883 flagword dynamic_sec_flags
;
885 /* Architecture-specific data for this backend.
886 This is actually a pointer to some type like struct elf_ARCH_data. */
887 const void *arch_data
;
889 /* A function to translate an ELF RELA relocation to a BFD arelent
890 structure. Returns TRUE upon success, FALSE otherwise. */
891 bfd_boolean (*elf_info_to_howto
)
892 (bfd
*, arelent
*, Elf_Internal_Rela
*);
894 /* A function to translate an ELF REL relocation to a BFD arelent
895 structure. Returns TRUE upon success, FALSE otherwise. */
896 bfd_boolean (*elf_info_to_howto_rel
)
897 (bfd
*, arelent
*, Elf_Internal_Rela
*);
899 /* A function to determine whether a symbol is global when
900 partitioning the symbol table into local and global symbols.
901 This should be NULL for most targets, in which case the correct
902 thing will be done. MIPS ELF, at least on the Irix 5, has
903 special requirements. */
904 bfd_boolean (*elf_backend_sym_is_global
)
907 /* The remaining functions are hooks which are called only if they
910 /* A function to permit a backend specific check on whether a
911 particular BFD format is relevant for an object file, and to
912 permit the backend to set any global information it wishes. When
913 this is called elf_elfheader is set, but anything else should be
914 used with caution. If this returns FALSE, the check_format
915 routine will return a bfd_error_wrong_format error. */
916 bfd_boolean (*elf_backend_object_p
)
919 /* A function to do additional symbol processing when reading the
920 ELF symbol table. This is where any processor-specific special
921 section indices are handled. */
922 void (*elf_backend_symbol_processing
)
925 /* A function to do additional symbol processing after reading the
926 entire ELF symbol table. */
927 bfd_boolean (*elf_backend_symbol_table_processing
)
928 (bfd
*, elf_symbol_type
*, unsigned int);
930 /* A function to set the type of the info field. Processor-specific
931 types should be handled here. */
932 int (*elf_backend_get_symbol_type
)
933 (Elf_Internal_Sym
*, int);
935 /* A function to return the linker hash table entry of a symbol that
936 might be satisfied by an archive symbol. */
937 struct elf_link_hash_entry
* (*elf_backend_archive_symbol_lookup
)
938 (bfd
*, struct bfd_link_info
*, const char *);
940 /* Return true if local section symbols should have a non-null st_name.
941 NULL implies false. */
942 bfd_boolean (*elf_backend_name_local_section_symbols
)
945 /* A function to do additional processing on the ELF section header
946 just before writing it out. This is used to set the flags and
947 type fields for some sections, or to actually write out data for
949 bfd_boolean (*elf_backend_section_processing
)
950 (bfd
*, Elf_Internal_Shdr
*);
952 /* A function to handle unusual section types when creating BFD
953 sections from ELF sections. */
954 bfd_boolean (*elf_backend_section_from_shdr
)
955 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
957 /* A function to convert machine dependent ELF section header flags to
958 BFD internal section header flags. */
959 bfd_boolean (*elf_backend_section_flags
)
960 (flagword
*, const Elf_Internal_Shdr
*);
962 /* A function that returns a struct containing ELF section flags and
963 type for the given BFD section. */
964 const struct bfd_elf_special_section
* (*get_sec_type_attr
)
967 /* A function to handle unusual program segment types when creating BFD
968 sections from ELF program segments. */
969 bfd_boolean (*elf_backend_section_from_phdr
)
970 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
972 /* A function to set up the ELF section header for a BFD section in
973 preparation for writing it out. This is where the flags and type
974 fields are set for unusual sections. */
975 bfd_boolean (*elf_backend_fake_sections
)
976 (bfd
*, Elf_Internal_Shdr
*, asection
*);
978 /* A function to get the ELF section index for a BFD section. If
979 this returns TRUE, the section was found. If it is a normal ELF
980 section, *RETVAL should be left unchanged. If it is not a normal
981 ELF section *RETVAL should be set to the SHN_xxxx index. */
982 bfd_boolean (*elf_backend_section_from_bfd_section
)
983 (bfd
*, asection
*, int *retval
);
985 /* If this field is not NULL, it is called by the add_symbols phase
986 of a link just before adding a symbol to the global linker hash
987 table. It may modify any of the fields as it wishes. If *NAME
988 is set to NULL, the symbol will be skipped rather than being
989 added to the hash table. This function is responsible for
990 handling all processor dependent symbol bindings and section
991 indices, and must set at least *FLAGS and *SEC for each processor
992 dependent case; failure to do so will cause a link error. */
993 bfd_boolean (*elf_add_symbol_hook
)
994 (bfd
*abfd
, struct bfd_link_info
*info
, Elf_Internal_Sym
*,
995 const char **name
, flagword
*flags
, asection
**sec
, bfd_vma
*value
);
997 /* If this field is not NULL, it is called by the elf_link_output_sym
998 phase of a link for each symbol which will appear in the object file.
999 On error, this function returns 0. 1 is returned when the symbol
1000 should be output, 2 is returned when the symbol should be discarded. */
1001 int (*elf_backend_link_output_symbol_hook
)
1002 (struct bfd_link_info
*info
, const char *, Elf_Internal_Sym
*,
1003 asection
*, struct elf_link_hash_entry
*);
1005 /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
1006 linker the first time it encounters a dynamic object in the link.
1007 This function must create any sections required for dynamic
1008 linking. The ABFD argument is a dynamic object. The .interp,
1009 .dynamic, .dynsym, .dynstr, and .hash functions have already been
1010 created, and this function may modify the section flags if
1011 desired. This function will normally create the .got and .plt
1012 sections, but different backends have different requirements. */
1013 bfd_boolean (*elf_backend_create_dynamic_sections
)
1014 (bfd
*abfd
, struct bfd_link_info
*info
);
1016 /* When creating a shared library, determine whether to omit the
1017 dynamic symbol for the section. */
1018 bfd_boolean (*elf_backend_omit_section_dynsym
)
1019 (bfd
*output_bfd
, struct bfd_link_info
*info
, asection
*osec
);
1021 /* Return TRUE if relocations of targets are compatible to the extent
1022 that CHECK_RELOCS will properly process them. PR 4424. */
1023 bfd_boolean (*relocs_compatible
) (const bfd_target
*, const bfd_target
*);
1025 /* The CHECK_RELOCS function is called by the add_symbols phase of
1026 the ELF backend linker. It is called once for each section with
1027 relocs of an object file, just after the symbols for the object
1028 file have been added to the global linker hash table. The
1029 function must look through the relocs and do any special handling
1030 required. This generally means allocating space in the global
1031 offset table, and perhaps allocating space for a reloc. The
1032 relocs are always passed as Rela structures; if the section
1033 actually uses Rel structures, the r_addend field will always be
1035 bfd_boolean (*check_relocs
)
1036 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
1037 const Elf_Internal_Rela
*relocs
);
1039 /* The CHECK_DIRECTIVES function is called once per input file by
1040 the add_symbols phase of the ELF backend linker. The function
1041 must inspect the bfd and create any additional symbols according
1042 to any custom directives in the bfd. */
1043 bfd_boolean (*check_directives
)
1044 (bfd
*abfd
, struct bfd_link_info
*info
);
1046 /* The NOTICE_AS_NEEDED function is called as the linker is about to
1047 handle an as-needed lib (ACT = notice_as_needed), and after the
1048 linker has decided to keep the lib (ACT = notice_needed) or when
1049 the lib is not needed (ACT = notice_not_needed). */
1050 bfd_boolean (*notice_as_needed
)
1051 (bfd
*abfd
, struct bfd_link_info
*info
, enum notice_asneeded_action act
);
1053 /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
1054 linker for every symbol which is defined by a dynamic object and
1055 referenced by a regular object. This is called after all the
1056 input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
1057 function has been called. The hash table entry should be
1058 bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
1059 defined in a section from a dynamic object. Dynamic object
1060 sections are not included in the final link, and this function is
1061 responsible for changing the value to something which the rest of
1062 the link can deal with. This will normally involve adding an
1063 entry to the .plt or .got or some such section, and setting the
1064 symbol to point to that. */
1065 bfd_boolean (*elf_backend_adjust_dynamic_symbol
)
1066 (struct bfd_link_info
*info
, struct elf_link_hash_entry
*h
);
1068 /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
1069 after all the linker input files have been seen but before the
1070 section sizes have been set. This is called after
1071 ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */
1072 bfd_boolean (*elf_backend_always_size_sections
)
1073 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1075 /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
1076 linker after all the linker input files have been seen but before
1077 the sections sizes have been set. This is called after
1078 ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
1079 It is only called when linking against a dynamic object. It must
1080 set the sizes of the dynamic sections, and may fill in their
1081 contents as well. The generic ELF linker can handle the .dynsym,
1082 .dynstr and .hash sections. This function must handle the
1083 .interp section and any sections created by the
1084 CREATE_DYNAMIC_SECTIONS entry point. */
1085 bfd_boolean (*elf_backend_size_dynamic_sections
)
1086 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1088 /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections
1089 we keep to use as a base for relocs and symbols. */
1090 void (*elf_backend_init_index_section
)
1091 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1093 /* The RELOCATE_SECTION function is called by the ELF backend linker
1094 to handle the relocations for a section.
1096 The relocs are always passed as Rela structures; if the section
1097 actually uses Rel structures, the r_addend field will always be
1100 This function is responsible for adjust the section contents as
1101 necessary, and (if using Rela relocs and generating a
1102 relocatable output file) adjusting the reloc addend as
1105 This function does not have to worry about setting the reloc
1106 address or the reloc symbol index.
1108 LOCAL_SYMS is a pointer to the swapped in local symbols.
1110 LOCAL_SECTIONS is an array giving the section in the input file
1111 corresponding to the st_shndx field of each local symbol.
1113 The global hash table entry for the global symbols can be found
1114 via elf_sym_hashes (input_bfd).
1116 When generating relocatable output, this function must handle
1117 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1118 going to be the section symbol corresponding to the output
1119 section, which means that the addend must be adjusted
1122 Returns FALSE on error, TRUE on success, 2 if successful and
1123 relocations should be written for this section. */
1124 int (*elf_backend_relocate_section
)
1125 (bfd
*output_bfd
, struct bfd_link_info
*info
, bfd
*input_bfd
,
1126 asection
*input_section
, bfd_byte
*contents
, Elf_Internal_Rela
*relocs
,
1127 Elf_Internal_Sym
*local_syms
, asection
**local_sections
);
1129 /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
1130 linker just before it writes a symbol out to the .dynsym section.
1131 The processor backend may make any required adjustment to the
1132 symbol. It may also take the opportunity to set contents of the
1133 dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
1134 all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
1135 on those symbols which are defined by a dynamic object. */
1136 bfd_boolean (*elf_backend_finish_dynamic_symbol
)
1137 (bfd
*output_bfd
, struct bfd_link_info
*info
,
1138 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*sym
);
1140 /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
1141 linker just before it writes all the dynamic sections out to the
1142 output file. The FINISH_DYNAMIC_SYMBOL will have been called on
1143 all dynamic symbols. */
1144 bfd_boolean (*elf_backend_finish_dynamic_sections
)
1145 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1147 /* A function to do any beginning processing needed for the ELF file
1148 before building the ELF headers and computing file positions. */
1149 void (*elf_backend_begin_write_processing
)
1150 (bfd
*, struct bfd_link_info
*);
1152 /* A function to do any final processing needed for the ELF file
1153 before writing it out. */
1154 bfd_boolean (*elf_backend_final_write_processing
)
1157 /* This function is called by get_program_header_size. It should
1158 return the number of additional program segments which this BFD
1159 will need. It should return -1 on error. */
1160 int (*elf_backend_additional_program_headers
)
1161 (bfd
*, struct bfd_link_info
*);
1163 /* This function is called to modify an existing segment map in a
1164 backend specific fashion. */
1165 bfd_boolean (*elf_backend_modify_segment_map
)
1166 (bfd
*, struct bfd_link_info
*);
1168 /* This function is called to modify program headers just before
1169 they are written. */
1170 bfd_boolean (*elf_backend_modify_headers
)
1171 (bfd
*, struct bfd_link_info
*);
1173 /* This function is called to see if the PHDR header should be
1174 checked for validity. */
1175 bfd_boolean (*elf_backend_allow_non_load_phdr
)
1176 (bfd
*, const Elf_Internal_Phdr
*, unsigned);
1178 /* This function is called before section garbage collection to
1179 mark entry symbol sections. */
1181 (struct bfd_link_info
*);
1183 /* This function is called during section garbage collection to
1184 mark sections that define global symbols. */
1185 bfd_boolean (*gc_mark_dynamic_ref
)
1186 (struct elf_link_hash_entry
*, void *);
1188 /* This function is called during section gc to discover the section a
1189 particular relocation refers to. */
1190 elf_gc_mark_hook_fn gc_mark_hook
;
1192 /* This function, if defined, is called after the first gc marking pass
1193 to allow the backend to mark additional sections. */
1194 bfd_boolean (*gc_mark_extra_sections
)
1195 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
1197 /* This function is called to initialise ELF file header info.
1198 Customised versions can modify things like the OS and ABI version. */
1199 bfd_boolean (*elf_backend_init_file_header
)
1200 (bfd
*, struct bfd_link_info
*);
1202 /* This function, if defined, prints a symbol to file and returns the
1203 name of the symbol to be printed. It should return NULL to fall
1204 back to default symbol printing. */
1205 const char *(*elf_backend_print_symbol_all
)
1206 (bfd
*, void *, asymbol
*);
1208 /* This function, if defined, is called after all local symbols and
1209 global symbols converted to locals are emitted into the symtab
1210 section. It allows the backend to emit special local symbols
1211 not handled in the hash table. */
1212 bfd_boolean (*elf_backend_output_arch_local_syms
)
1213 (bfd
*, struct bfd_link_info
*, void *,
1214 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1215 struct elf_link_hash_entry
*));
1217 /* This function, if defined, is called after all symbols are emitted
1218 into the symtab section. It allows the backend to emit special
1219 global symbols not handled in the hash table. */
1220 bfd_boolean (*elf_backend_output_arch_syms
)
1221 (bfd
*, struct bfd_link_info
*, void *,
1222 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1223 struct elf_link_hash_entry
*));
1225 /* Filter what symbols of the output file to include in the import
1226 library if one is created. */
1227 unsigned int (*elf_backend_filter_implib_symbols
)
1228 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
1230 /* Copy any information related to dynamic linking from a pre-existing
1231 symbol to a newly created symbol. Also called to copy flags and
1232 other back-end info to a weakdef, in which case the symbol is not
1233 newly created and plt/got refcounts and dynamic indices should not
1235 void (*elf_backend_copy_indirect_symbol
)
1236 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
1237 struct elf_link_hash_entry
*);
1239 /* Modify any information related to dynamic linking such that the
1240 symbol is not exported. */
1241 void (*elf_backend_hide_symbol
)
1242 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
1244 /* A function to do additional symbol fixup, called by
1245 _bfd_elf_fix_symbol_flags. */
1246 bfd_boolean (*elf_backend_fixup_symbol
)
1247 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
1249 /* Merge the backend specific symbol attribute. */
1250 void (*elf_backend_merge_symbol_attribute
)
1251 (struct elf_link_hash_entry
*, const Elf_Internal_Sym
*, bfd_boolean
,
1254 /* This function, if defined, will return a string containing the
1255 name of a target-specific dynamic tag. */
1256 char *(*elf_backend_get_target_dtag
)
1259 /* Decide whether an undefined symbol is special and can be ignored.
1260 This is the case for OPTIONAL symbols on IRIX. */
1261 bfd_boolean (*elf_backend_ignore_undef_symbol
)
1262 (struct elf_link_hash_entry
*);
1264 /* Emit relocations. Overrides default routine for emitting relocs,
1265 except during a relocatable link, or if all relocs are being emitted. */
1266 bfd_boolean (*elf_backend_emit_relocs
)
1267 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
1268 struct elf_link_hash_entry
**);
1270 /* Update relocations. It is allowed to change the number and the order.
1271 In such a case hashes should be invalidated. */
1272 void (*elf_backend_update_relocs
)
1273 (asection
*, struct bfd_elf_section_reloc_data
*);
1275 /* Count relocations. Not called for relocatable links
1276 or if all relocs are being preserved in the output. */
1277 unsigned int (*elf_backend_count_relocs
)
1278 (struct bfd_link_info
*, asection
*);
1280 /* Count additionals relocations. Called for relocatable links if
1281 additional relocations needs to be created. */
1282 unsigned int (*elf_backend_count_additional_relocs
)
1285 /* Say whether to sort relocs output by ld -r and ld --emit-relocs,
1286 by r_offset. If NULL, default to true. */
1287 bfd_boolean (*sort_relocs_p
)
1290 /* This function, if defined, is called when an NT_PRSTATUS note is found
1292 bfd_boolean (*elf_backend_grok_prstatus
)
1293 (bfd
*, Elf_Internal_Note
*);
1295 /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
1296 note is found in a core file. */
1297 bfd_boolean (*elf_backend_grok_psinfo
)
1298 (bfd
*, Elf_Internal_Note
*);
1300 /* This function, if defined, is called when a "FreeBSD" NT_PRSTATUS
1301 note is found in a core file. */
1302 bfd_boolean (*elf_backend_grok_freebsd_prstatus
)
1303 (bfd
*, Elf_Internal_Note
*);
1305 /* This function, if defined, is called to write a note to a corefile. */
1306 char *(*elf_backend_write_core_note
)
1307 (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...);
1309 /* This function, if defined, is called to convert target-specific
1310 section flag names into hex values. */
1311 flagword (*elf_backend_lookup_section_flags_hook
)
1314 /* This function returns class of a reloc type. */
1315 enum elf_reloc_type_class (*elf_backend_reloc_type_class
)
1316 (const struct bfd_link_info
*, const asection
*, const Elf_Internal_Rela
*);
1318 /* This function, if defined, removes information about discarded functions
1319 from other sections which mention them. */
1320 bfd_boolean (*elf_backend_discard_info
)
1321 (bfd
*, struct elf_reloc_cookie
*, struct bfd_link_info
*);
1323 /* This function, if defined, signals that the function above has removed
1324 the discarded relocations for this section. */
1325 bfd_boolean (*elf_backend_ignore_discarded_relocs
)
1328 /* What to do when ld finds relocations against symbols defined in
1329 discarded sections. */
1330 unsigned int (*action_discarded
)
1333 /* This function returns the width of FDE pointers in bytes, or 0 if
1334 that can't be determined for some reason. The default definition
1335 goes by the bfd's EI_CLASS. */
1336 unsigned int (*elf_backend_eh_frame_address_size
)
1337 (bfd
*, const asection
*);
1339 /* These functions tell elf-eh-frame whether to attempt to turn
1340 absolute or lsda encodings into pc-relative ones. The default
1341 definition enables these transformations. */
1342 bfd_boolean (*elf_backend_can_make_relative_eh_frame
)
1343 (bfd
*, struct bfd_link_info
*, asection
*);
1344 bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame
)
1345 (bfd
*, struct bfd_link_info
*, asection
*);
1347 /* This function returns an encoding after computing the encoded
1348 value (and storing it in ENCODED) for the given OFFSET into OSEC,
1349 to be stored in at LOC_OFFSET into the LOC_SEC input section.
1350 The default definition chooses a 32-bit PC-relative encoding. */
1351 bfd_byte (*elf_backend_encode_eh_address
)
1352 (bfd
*abfd
, struct bfd_link_info
*info
,
1353 asection
*osec
, bfd_vma offset
,
1354 asection
*loc_sec
, bfd_vma loc_offset
,
1357 /* This function, if defined, may write out the given section.
1358 Returns TRUE if it did so and FALSE if the caller should. */
1359 bfd_boolean (*elf_backend_write_section
)
1360 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
1362 /* The level of IRIX compatibility we're striving for.
1363 MIPS ELF specific function. */
1364 irix_compat_t (*elf_backend_mips_irix_compat
)
1367 reloc_howto_type
*(*elf_backend_mips_rtype_to_howto
)
1368 (bfd
*, unsigned int, bfd_boolean
);
1370 /* The swapping table to use when dealing with ECOFF information.
1371 Used for the MIPS ELF .mdebug section. */
1372 const struct ecoff_debug_swap
*elf_backend_ecoff_debug_swap
;
1374 /* This function implements `bfd_elf_bfd_from_remote_memory';
1375 see elf.c, elfcode.h. */
1376 bfd
*(*elf_backend_bfd_from_remote_memory
)
1377 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
1378 int (*target_read_memory
) (bfd_vma vma
, bfd_byte
*myaddr
,
1379 bfd_size_type len
));
1381 bfd_boolean (*elf_backend_core_find_build_id
) (bfd
*, bfd_vma
);
1383 /* This function is used by `_bfd_elf_get_synthetic_symtab';
1385 bfd_vma (*plt_sym_val
) (bfd_vma
, const asection
*, const arelent
*);
1387 /* Is symbol defined in common section? */
1388 bfd_boolean (*common_definition
) (Elf_Internal_Sym
*);
1390 /* Return a common section index for section. */
1391 unsigned int (*common_section_index
) (asection
*);
1393 /* Return a common section for section. */
1394 asection
*(*common_section
) (asection
*);
1396 /* Return TRUE if we can merge 2 definitions. */
1397 bfd_boolean (*merge_symbol
) (struct elf_link_hash_entry
*,
1398 const Elf_Internal_Sym
*, asection
**,
1399 bfd_boolean
, bfd_boolean
,
1400 bfd
*, const asection
*);
1402 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
1403 bfd_boolean (*elf_hash_symbol
) (struct elf_link_hash_entry
*);
1405 /* If non-NULL, called to register the location of XLAT_LOC within
1406 .MIPS.xhash at which real final dynindx for H will be written.
1407 If XLAT_LOC is zero, the symbol is not included in
1408 .MIPS.xhash and no dynindx will be written. */
1409 void (*record_xhash_symbol
)
1410 (struct elf_link_hash_entry
*h
, bfd_vma xlat_loc
);
1412 /* Return TRUE if type is a function symbol type. */
1413 bfd_boolean (*is_function_type
) (unsigned int type
);
1415 /* If the ELF symbol SYM might be a function in SEC, return the
1416 function size and set *CODE_OFF to the function's entry point,
1417 otherwise return zero. */
1418 bfd_size_type (*maybe_function_sym
) (const asymbol
*sym
, asection
*sec
,
1421 /* Given NAME, the name of a relocation section stripped of its
1422 .rel/.rela prefix, return the section in ABFD to which the
1423 relocations apply. */
1424 asection
*(*get_reloc_section
) (bfd
*abfd
, const char *name
);
1426 /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
1427 has a type >= SHT_LOOS. Returns TRUE if the fields were initialised,
1428 FALSE otherwise. Can be called multiple times for a given section,
1429 until it returns TRUE. Most of the times it is called ISECTION will be
1430 set to an input section that might be associated with the output section.
1431 The last time that it is called, ISECTION will be set to NULL. */
1432 bfd_boolean (*elf_backend_copy_special_section_fields
)
1433 (const bfd
*ibfd
, bfd
*obfd
, const Elf_Internal_Shdr
*isection
,
1434 Elf_Internal_Shdr
*osection
);
1436 /* Used to handle bad SHF_LINK_ORDER input. */
1437 void (*link_order_error_handler
) (const char *, ...);
1439 /* Name of the PLT relocation section. */
1440 const char *relplt_name
;
1442 /* Alternate EM_xxxx machine codes for this backend. */
1443 int elf_machine_alt1
;
1444 int elf_machine_alt2
;
1446 const struct elf_size_info
*s
;
1448 /* An array of target specific special sections. */
1449 const struct bfd_elf_special_section
*special_sections
;
1451 /* The size in bytes of the header for the GOT. This includes the
1452 so-called reserved entries on some systems. */
1453 bfd_vma got_header_size
;
1455 /* The size of the GOT entry for the symbol pointed to by H if non-NULL,
1456 otherwise by the local symbol with index SYMNDX in IBFD. */
1457 bfd_vma (*got_elt_size
) (bfd
*, struct bfd_link_info
*,
1458 struct elf_link_hash_entry
*h
,
1459 bfd
*ibfd
, unsigned long symndx
);
1461 /* The vendor name to use for a processor-standard attributes section. */
1462 const char *obj_attrs_vendor
;
1464 /* The section name to use for a processor-standard attributes section. */
1465 const char *obj_attrs_section
;
1467 /* Return 1, 2 or 3 to indicate what type of arguments a
1468 processor-specific tag takes. */
1469 int (*obj_attrs_arg_type
) (int);
1471 /* The section type to use for an attributes section. */
1472 unsigned int obj_attrs_section_type
;
1474 /* This function determines the order in which any attributes are
1475 written. It must be defined for input in the range
1476 LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range
1477 is used in order to make unity easy). The returned value is the
1478 actual tag number to place in the input position. */
1479 int (*obj_attrs_order
) (int);
1481 /* Handle merging unknown attributes; either warn and return TRUE,
1482 or give an error and return FALSE. */
1483 bfd_boolean (*obj_attrs_handle_unknown
) (bfd
*, int);
1485 /* Parse GNU properties. Return the property kind. If the property
1486 is corrupt, issue an error message and return property_corrupt. */
1487 enum elf_property_kind (*parse_gnu_properties
) (bfd
*, unsigned int,
1491 /* Merge GNU properties. Return TRUE if property is updated. */
1492 bfd_boolean (*merge_gnu_properties
) (struct bfd_link_info
*, bfd
*, bfd
*,
1493 elf_property
*, elf_property
*);
1495 /* Set up GNU properties. */
1496 bfd
*(*setup_gnu_properties
) (struct bfd_link_info
*);
1498 /* Fix up GNU properties. */
1499 void (*fixup_gnu_properties
) (struct bfd_link_info
*,
1500 elf_property_list
**);
1502 /* Encoding used for compact EH tables. */
1503 int (*compact_eh_encoding
) (struct bfd_link_info
*);
1505 /* Opcode representing no unwind. */
1506 int (*cant_unwind_opcode
) (struct bfd_link_info
*);
1508 /* This is non-zero if static TLS segments require a special alignment. */
1509 unsigned static_tls_alignment
;
1511 /* Alignment for the PT_GNU_STACK segment. */
1512 unsigned stack_align
;
1514 /* Flag bits to assign to a section of type SHT_STRTAB. */
1515 unsigned long elf_strtab_flags
;
1517 /* This is TRUE if the linker should act like collect and gather
1518 global constructors and destructors by name. This is TRUE for
1519 MIPS ELF because the Irix 5 tools can not handle the .init
1521 unsigned collect
: 1;
1523 /* This is TRUE if the linker should ignore changes to the type of a
1524 symbol. This is TRUE for MIPS ELF because some Irix 5 objects
1525 record undefined functions as STT_OBJECT although the definitions
1527 unsigned type_change_ok
: 1;
1529 /* Whether the backend may use REL relocations. (Some backends use
1530 both REL and RELA relocations, and this flag is set for those
1532 unsigned may_use_rel_p
: 1;
1534 /* Whether the backend may use RELA relocations. (Some backends use
1535 both REL and RELA relocations, and this flag is set for those
1537 unsigned may_use_rela_p
: 1;
1539 /* Whether the default relocation type is RELA. If a backend with
1540 this flag set wants REL relocations for a particular section,
1541 it must note that explicitly. Similarly, if this flag is clear,
1542 and the backend wants RELA relocations for a particular
1544 unsigned default_use_rela_p
: 1;
1546 /* True if PLT and copy relocations should be RELA by default. */
1547 unsigned rela_plts_and_copies_p
: 1;
1549 /* Set if RELA relocations for a relocatable link can be handled by
1550 generic code. Backends that set this flag need do nothing in the
1551 backend relocate_section routine for relocatable linking. */
1552 unsigned rela_normal
: 1;
1554 /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT
1556 unsigned dtrel_excludes_plt
: 1;
1558 /* TRUE if addresses "naturally" sign extend. This is used when
1559 swapping in from Elf32 when BFD64. */
1560 unsigned sign_extend_vma
: 1;
1562 unsigned want_got_plt
: 1;
1563 unsigned plt_readonly
: 1;
1564 unsigned want_plt_sym
: 1;
1565 unsigned plt_not_loaded
: 1;
1566 unsigned plt_alignment
: 4;
1567 unsigned can_gc_sections
: 1;
1568 unsigned can_refcount
: 1;
1569 unsigned want_got_sym
: 1;
1570 unsigned want_dynbss
: 1;
1571 unsigned want_dynrelro
: 1;
1573 /* Targets which do not support physical addressing often require
1574 that the p_paddr field in the section header to be set to zero.
1575 This field indicates whether this behavior is required. */
1576 unsigned want_p_paddr_set_to_zero
: 1;
1578 /* Target has broken hardware and/or kernel that requires pages not
1579 to be mapped twice with different permissions. */
1580 unsigned no_page_alias
: 1;
1582 /* True if an object file lacking a .note.GNU-stack section
1583 should be assumed to be requesting exec stack. At least one
1584 other file in the link needs to have a .note.GNU-stack section
1585 for a PT_GNU_STACK segment to be created. */
1586 unsigned default_execstack
: 1;
1588 /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize
1589 in length rather than sec->size in length, if sec->rawsize is
1590 non-zero and smaller than sec->size. */
1591 unsigned caches_rawsize
: 1;
1593 /* Address of protected data defined in the shared library may be
1594 external, i.e., due to copy relocation. */
1595 unsigned extern_protected_data
: 1;
1597 /* True if `_bfd_elf_link_renumber_dynsyms' must be called even for
1599 unsigned always_renumber_dynsyms
: 1;
1601 /* True if the 32-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1602 members use a 16-bit data type. */
1603 unsigned linux_prpsinfo32_ugid16
: 1;
1605 /* True if the 64-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1606 members use a 16-bit data type. */
1607 unsigned linux_prpsinfo64_ugid16
: 1;
1610 /* Information about reloc sections associated with a bfd_elf_section_data
1612 struct bfd_elf_section_reloc_data
1614 /* The ELF header for the reloc section associated with this
1616 Elf_Internal_Shdr
*hdr
;
1617 /* The number of relocations currently assigned to HDR. */
1619 /* The ELF section number of the reloc section. Only used for an
1622 /* Used by the backend linker to store the symbol hash table entries
1623 associated with relocs against global symbols. */
1624 struct elf_link_hash_entry
**hashes
;
1627 /* Information stored for each BFD section in an ELF file. This
1628 structure is allocated by elf_new_section_hook. */
1630 struct bfd_elf_section_data
1632 /* The ELF header for this section. */
1633 Elf_Internal_Shdr this_hdr
;
1635 /* INPUT_SECTION_FLAGS if specified in the linker script. */
1636 struct flag_info
*section_flag_info
;
1638 /* Information about the REL and RELA reloc sections associated
1639 with this section, if any. */
1640 struct bfd_elf_section_reloc_data rel
, rela
;
1642 /* The ELF section number of this section. */
1645 /* Used by the backend linker when generating a shared library to
1646 record the dynamic symbol index for a section symbol
1647 corresponding to this section. A value of 0 means that there is
1648 no dynamic symbol for this section. */
1651 /* A pointer to the linked-to section for SHF_LINK_ORDER. */
1652 asection
*linked_to
;
1654 /* A pointer to the swapped relocs. If the section uses REL relocs,
1655 rather than RELA, all the r_addend fields will be zero. This
1656 pointer may be NULL. It is used by the backend linker. */
1657 Elf_Internal_Rela
*relocs
;
1659 /* A pointer to a linked list tracking dynamic relocs copied for
1663 /* A pointer to the bfd section used for dynamic relocs. */
1667 /* Group name, if this section is a member of a group. */
1670 /* Group signature sym, if this is the SHT_GROUP section. */
1671 struct bfd_symbol
*id
;
1674 /* For a member of a group, points to the SHT_GROUP section.
1675 NULL for the SHT_GROUP section itself and non-group sections. */
1676 asection
*sec_group
;
1678 /* A linked list of member sections in the group. Circular when used by
1679 the linker. For the SHT_GROUP section, points at first member. */
1680 asection
*next_in_group
;
1682 /* The FDEs associated with this section. The u.fde.next_in_section
1683 field acts as a chain pointer. */
1684 struct eh_cie_fde
*fde_list
;
1686 /* Link from a text section to its .eh_frame_entry section. */
1687 asection
*eh_frame_entry
;
1689 /* A pointer used for various section optimizations. */
1693 #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
1694 #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
1695 #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type)
1696 #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
1697 #define elf_section_info(sec) (elf_section_data(sec)->this_hdr.sh_info)
1698 #define elf_group_name(sec) (elf_section_data(sec)->group.name)
1699 #define elf_group_id(sec) (elf_section_data(sec)->group.id)
1700 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
1701 #define elf_fde_list(sec) (elf_section_data(sec)->fde_list)
1702 #define elf_sec_group(sec) (elf_section_data(sec)->sec_group)
1703 #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry)
1705 #define xvec_get_elf_backend_data(xvec) \
1706 ((const struct elf_backend_data *) (xvec)->backend_data)
1708 #define get_elf_backend_data(abfd) \
1709 xvec_get_elf_backend_data ((abfd)->xvec)
1711 /* The least object attributes (within an attributes subsection) known
1712 for any target. Some code assumes that the value 0 is not used and
1713 the field for that attribute can instead be used as a marker to
1714 indicate that attributes have been initialized. */
1715 #define LEAST_KNOWN_OBJ_ATTRIBUTE 2
1717 /* The maximum number of known object attributes for any target. */
1718 #define NUM_KNOWN_OBJ_ATTRIBUTES 71
1720 /* The value of an object attribute. The type indicates whether the attribute
1721 holds and integer, a string, or both. It can also indicate that there can
1722 be no default (i.e. all values must be written to file, even zero), or
1723 that the value is in error and should not be written to file. */
1725 typedef struct obj_attribute
1727 #define ATTR_TYPE_FLAG_INT_VAL (1 << 0)
1728 #define ATTR_TYPE_FLAG_STR_VAL (1 << 1)
1729 #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
1730 #define ATTR_TYPE_FLAG_ERROR (1 << 3)
1732 #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
1733 #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
1734 #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
1735 #define ATTR_TYPE_HAS_ERROR(TYPE) ((TYPE) & ATTR_TYPE_FLAG_ERROR)
1742 typedef struct obj_attribute_list
1744 struct obj_attribute_list
*next
;
1747 } obj_attribute_list
;
1749 /* Object attributes may either be defined by the processor ABI, index
1750 OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
1751 (and possibly also processor-specific), index OBJ_ATTR_GNU. */
1752 #define OBJ_ATTR_PROC 0
1753 #define OBJ_ATTR_GNU 1
1754 #define OBJ_ATTR_FIRST OBJ_ATTR_PROC
1755 #define OBJ_ATTR_LAST OBJ_ATTR_GNU
1757 /* The following object attribute tags are taken as generic, for all
1758 targets and for "gnu" where there is no target standard. */
1765 Tag_compatibility
= 32
1768 /* The following struct stores information about every SystemTap section
1769 found in the object file. */
1772 struct sdt_note
*next
;
1777 /* tdata information grabbed from an elf core file. */
1778 struct core_elf_obj_tdata
1787 /* Extra tdata information held for output ELF BFDs. */
1788 struct output_elf_obj_tdata
1790 struct elf_segment_map
*seg_map
;
1791 struct elf_strtab_hash
*strtab_ptr
;
1793 /* STT_SECTION symbols for each section */
1794 asymbol
**section_syms
;
1796 /* Used to determine if PT_GNU_EH_FRAME segment header should be
1798 asection
*eh_frame_hdr
;
1800 /* NT_GNU_BUILD_ID note type info. */
1803 bfd_boolean (*after_write_object_contents
) (bfd
*);
1808 /* Records the result of `get_program_header_size'. */
1809 bfd_size_type program_header_size
;
1811 /* Used when laying out sections. */
1812 file_ptr next_file_pos
;
1814 int num_section_syms
;
1815 unsigned int shstrtab_section
, strtab_section
;
1817 /* Segment flags for the PT_GNU_STACK segment. */
1818 unsigned int stack_flags
;
1820 /* Used to determine if the e_flags field has been initialized */
1821 bfd_boolean flags_init
;
1824 /* Indicate if the bfd contains SHF_GNU_MBIND sections or symbols that
1825 have the STT_GNU_IFUNC symbol type or STB_GNU_UNIQUE binding. Used
1826 to set the osabi field in the ELF header structure. */
1829 elf_gnu_osabi_mbind
= 1 << 0,
1830 elf_gnu_osabi_ifunc
= 1 << 1,
1831 elf_gnu_osabi_unique
= 1 << 2,
1834 typedef struct elf_section_list
1836 Elf_Internal_Shdr hdr
;
1838 struct elf_section_list
* next
;
1841 enum dynamic_lib_link_class
{
1845 DYN_NO_ADD_NEEDED
= 4,
1849 /* Some private data is stashed away for future use using the tdata pointer
1850 in the bfd structure. */
1852 struct elf_obj_tdata
1854 Elf_Internal_Ehdr elf_header
[1]; /* Actual data, but ref like ptr */
1855 Elf_Internal_Shdr
**elf_sect_ptr
;
1856 Elf_Internal_Phdr
*phdr
;
1857 Elf_Internal_Shdr symtab_hdr
;
1858 Elf_Internal_Shdr shstrtab_hdr
;
1859 Elf_Internal_Shdr strtab_hdr
;
1860 Elf_Internal_Shdr dynsymtab_hdr
;
1861 Elf_Internal_Shdr dynstrtab_hdr
;
1862 Elf_Internal_Shdr dynversym_hdr
;
1863 Elf_Internal_Shdr dynverref_hdr
;
1864 Elf_Internal_Shdr dynverdef_hdr
;
1865 elf_section_list
* symtab_shndx_list
;
1866 bfd_vma gp
; /* The gp value */
1867 unsigned int gp_size
; /* The gp size */
1868 unsigned int num_elf_sections
; /* elf_sect_ptr size */
1870 /* A mapping from external symbols to entries in the linker hash
1871 table, used when linking. This is indexed by the symbol index
1872 minus the sh_info field of the symbol table header. */
1873 struct elf_link_hash_entry
**sym_hashes
;
1875 /* Track usage and final offsets of GOT entries for local symbols.
1876 This array is indexed by symbol index. Elements are used
1877 identically to "got" in struct elf_link_hash_entry. */
1880 bfd_signed_vma
*refcounts
;
1882 struct got_entry
**ents
;
1885 /* The linker ELF emulation code needs to let the backend ELF linker
1886 know what filename should be used for a dynamic object if the
1887 dynamic object is found using a search. The emulation code then
1888 sometimes needs to know what name was actually used. Until the
1889 file has been added to the linker symbol table, this field holds
1890 the name the linker wants. After it has been added, it holds the
1891 name actually used, which will be the DT_SONAME entry if there is
1893 const char *dt_name
;
1895 /* The linker emulation needs to know what audit libs
1896 are used by a dynamic object. */
1897 const char *dt_audit
;
1899 /* Used by find_nearest_line entry point. */
1902 /* A place to stash dwarf1 info for this bfd. */
1903 struct dwarf1_debug
*dwarf1_find_line_info
;
1905 /* A place to stash dwarf2 info for this bfd. */
1906 void *dwarf2_find_line_info
;
1908 /* Stash away info for yet another find line/function variant. */
1909 void *elf_find_function_cache
;
1911 /* Number of symbol version definitions we are about to emit. */
1912 unsigned int cverdefs
;
1914 /* Number of symbol version references we are about to emit. */
1915 unsigned int cverrefs
;
1917 /* Symbol version definitions in external objects. */
1918 Elf_Internal_Verdef
*verdef
;
1920 /* Symbol version references to external objects. */
1921 Elf_Internal_Verneed
*verref
;
1923 /* A pointer to the .eh_frame section. */
1924 asection
*eh_frame_section
;
1926 /* Symbol buffer. */
1929 /* List of GNU properties. Will be updated by setup_gnu_properties
1930 after all input GNU properties are merged for output. */
1931 elf_property_list
*properties
;
1933 obj_attribute known_obj_attributes
[2][NUM_KNOWN_OBJ_ATTRIBUTES
];
1934 obj_attribute_list
*other_obj_attributes
[2];
1936 /* Linked-list containing information about every Systemtap section
1937 found in the object file. Each section corresponds to one entry
1939 struct sdt_note
*sdt_note_head
;
1941 Elf_Internal_Shdr
**group_sect_ptr
;
1944 /* Index into group_sect_ptr, updated by setup_group when finding a
1945 section's group. Used to optimize subsequent group searches. */
1946 unsigned int group_search_offset
;
1948 unsigned int symtab_section
, dynsymtab_section
;
1949 unsigned int dynversym_section
, dynverdef_section
, dynverref_section
;
1951 /* An identifier used to distinguish different target
1952 specific extensions to this structure. */
1953 ENUM_BITFIELD (elf_target_id
) object_id
: 6;
1955 /* Whether a dyanmic object was specified normally on the linker
1956 command line, or was specified when --as-needed was in effect,
1957 or was found via a DT_NEEDED entry. */
1958 ENUM_BITFIELD (dynamic_lib_link_class
) dyn_lib_class
: 4;
1960 /* Whether the bfd uses OS specific bits that require ELFOSABI_GNU. */
1961 ENUM_BITFIELD (elf_gnu_osabi
) has_gnu_osabi
: 3;
1963 /* Whether if the bfd contains the GNU_PROPERTY_NO_COPY_ON_PROTECTED
1965 unsigned int has_no_copy_on_protected
: 1;
1967 /* Irix 5 often screws up the symbol table, sorting local symbols
1968 after global symbols. This flag is set if the symbol table in
1969 this BFD appears to be screwed up. If it is, we ignore the
1970 sh_info field in the symbol table header, and always read all the
1972 unsigned int bad_symtab
: 1;
1974 /* Information grabbed from an elf core file. */
1975 struct core_elf_obj_tdata
*core
;
1977 /* More information held for output ELF BFDs. */
1978 struct output_elf_obj_tdata
*o
;
1981 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
1983 #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id)
1984 #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size)
1985 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
1986 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
1987 #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections)
1988 #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map)
1989 #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos)
1990 #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr)
1991 #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags)
1992 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr)
1993 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
1994 #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list)
1995 #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section)
1996 #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section)
1997 #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr)
1998 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
1999 #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
2000 #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
2001 #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
2002 #define elf_eh_frame_section(bfd) \
2003 (elf_tdata(bfd) -> eh_frame_section)
2004 #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms)
2005 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms)
2006 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
2007 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
2008 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
2009 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
2010 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
2011 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
2012 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
2013 #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
2014 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
2015 #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit)
2016 #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
2017 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
2018 #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init)
2019 #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes)
2020 #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes)
2021 #define elf_known_obj_attributes_proc(bfd) \
2022 (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC])
2023 #define elf_other_obj_attributes_proc(bfd) \
2024 (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
2025 #define elf_properties(bfd) (elf_tdata (bfd) -> properties)
2026 #define elf_has_no_copy_on_protected(bfd) \
2027 (elf_tdata(bfd) -> has_no_copy_on_protected)
2029 extern void _bfd_elf_swap_verdef_in
2030 (bfd
*, const Elf_External_Verdef
*, Elf_Internal_Verdef
*);
2031 extern void _bfd_elf_swap_verdef_out
2032 (bfd
*, const Elf_Internal_Verdef
*, Elf_External_Verdef
*);
2033 extern void _bfd_elf_swap_verdaux_in
2034 (bfd
*, const Elf_External_Verdaux
*, Elf_Internal_Verdaux
*);
2035 extern void _bfd_elf_swap_verdaux_out
2036 (bfd
*, const Elf_Internal_Verdaux
*, Elf_External_Verdaux
*);
2037 extern void _bfd_elf_swap_verneed_in
2038 (bfd
*, const Elf_External_Verneed
*, Elf_Internal_Verneed
*);
2039 extern void _bfd_elf_swap_verneed_out
2040 (bfd
*, const Elf_Internal_Verneed
*, Elf_External_Verneed
*);
2041 extern void _bfd_elf_swap_vernaux_in
2042 (bfd
*, const Elf_External_Vernaux
*, Elf_Internal_Vernaux
*);
2043 extern void _bfd_elf_swap_vernaux_out
2044 (bfd
*, const Elf_Internal_Vernaux
*, Elf_External_Vernaux
*);
2045 extern void _bfd_elf_swap_versym_in
2046 (bfd
*, const Elf_External_Versym
*, Elf_Internal_Versym
*);
2047 extern void _bfd_elf_swap_versym_out
2048 (bfd
*, const Elf_Internal_Versym
*, Elf_External_Versym
*);
2050 extern unsigned int _bfd_elf_section_from_bfd_section
2051 (bfd
*, asection
*);
2052 extern char *bfd_elf_string_from_elf_section
2053 (bfd
*, unsigned, unsigned);
2054 extern Elf_Internal_Sym
*bfd_elf_get_elf_syms
2055 (bfd
*, Elf_Internal_Shdr
*, size_t, size_t, Elf_Internal_Sym
*, void *,
2056 Elf_External_Sym_Shndx
*);
2057 extern char * bfd_elf_get_str_section (bfd
*, unsigned int);
2058 extern const char *bfd_elf_sym_name
2059 (bfd
*, Elf_Internal_Shdr
*, Elf_Internal_Sym
*, asection
*);
2061 extern bfd_boolean _bfd_elf_copy_private_bfd_data
2063 extern bfd_boolean _bfd_elf_print_private_bfd_data
2065 const char * _bfd_elf_get_symbol_version_string
2066 (bfd
*, asymbol
*, bfd_boolean
*);
2067 extern void bfd_elf_print_symbol
2068 (bfd
*, void *, asymbol
*, bfd_print_symbol_type
);
2070 extern unsigned int _bfd_elf_eh_frame_address_size
2071 (bfd
*, const asection
*);
2072 extern bfd_byte _bfd_elf_encode_eh_address
2073 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*osec
, bfd_vma offset
,
2074 asection
*loc_sec
, bfd_vma loc_offset
, bfd_vma
*encoded
);
2075 extern bfd_boolean _bfd_elf_can_make_relative
2076 (bfd
*input_bfd
, struct bfd_link_info
*info
, asection
*eh_frame_section
);
2078 extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
2079 (const struct bfd_link_info
*, const asection
*,
2080 const Elf_Internal_Rela
*);
2081 extern bfd_vma _bfd_elf_rela_local_sym
2082 (bfd
*, Elf_Internal_Sym
*, asection
**, Elf_Internal_Rela
*);
2083 extern bfd_vma _bfd_elf_rel_local_sym
2084 (bfd
*, Elf_Internal_Sym
*, asection
**, bfd_vma
);
2085 extern bfd_vma _bfd_elf_section_offset
2086 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2088 extern unsigned long bfd_elf_hash
2090 extern unsigned long bfd_elf_gnu_hash
2093 extern bfd_reloc_status_type bfd_elf_generic_reloc
2094 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
2095 extern bfd_boolean bfd_elf_allocate_object
2096 (bfd
*, size_t, enum elf_target_id
);
2097 extern bfd_boolean bfd_elf_make_object
2099 extern bfd_boolean bfd_elf_mkcorefile
2101 extern bfd_boolean _bfd_elf_make_section_from_shdr
2102 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
2103 extern bfd_boolean _bfd_elf_make_section_from_phdr
2104 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
2105 extern struct bfd_hash_entry
*_bfd_elf_link_hash_newfunc
2106 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);
2107 extern struct bfd_link_hash_table
*_bfd_elf_link_hash_table_create
2109 extern void _bfd_elf_link_hash_table_free
2111 extern void _bfd_elf_link_hash_copy_indirect
2112 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2113 struct elf_link_hash_entry
*);
2114 extern void _bfd_elf_link_hash_hide_symbol
2115 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
2116 extern void _bfd_elf_link_hide_symbol
2117 (bfd
*, struct bfd_link_info
*, struct bfd_link_hash_entry
*);
2118 extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
2119 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2120 extern bfd_boolean _bfd_elf_link_hash_table_init
2121 (struct elf_link_hash_table
*, bfd
*,
2122 struct bfd_hash_entry
*(*)
2123 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *),
2124 unsigned int, enum elf_target_id
);
2125 extern bfd_boolean _bfd_elf_slurp_version_tables
2126 (bfd
*, bfd_boolean
);
2127 extern bfd_boolean _bfd_elf_merge_sections
2128 (bfd
*, struct bfd_link_info
*);
2129 extern bfd_boolean _bfd_elf_match_sections_by_type
2130 (bfd
*, const asection
*, bfd
*, const asection
*);
2131 extern bfd_boolean bfd_elf_is_group_section
2132 (bfd
*, const struct bfd_section
*);
2133 extern const char *bfd_elf_group_name
2134 (bfd
*, const struct bfd_section
*);
2135 extern bfd_boolean _bfd_elf_section_already_linked
2136 (bfd
*, asection
*, struct bfd_link_info
*);
2137 extern void bfd_elf_set_group_contents
2138 (bfd
*, asection
*, void *);
2139 extern unsigned int _bfd_elf_filter_global_symbols
2140 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
2141 extern asection
*_bfd_elf_check_kept_section
2142 (asection
*, struct bfd_link_info
*);
2143 #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms
2144 extern void _bfd_elf_copy_link_hash_symbol_type
2145 (bfd
*, struct bfd_link_hash_entry
*, struct bfd_link_hash_entry
*);
2146 extern bfd_boolean _bfd_elf_size_group_sections
2147 (struct bfd_link_info
*);
2148 extern bfd_boolean _bfd_elf_fixup_group_sections
2149 (bfd
*, asection
*);
2150 extern bfd_boolean _bfd_elf_copy_private_header_data
2152 extern bfd_boolean _bfd_elf_copy_private_symbol_data
2153 (bfd
*, asymbol
*, bfd
*, asymbol
*);
2154 #define _bfd_generic_init_private_section_data \
2155 _bfd_elf_init_private_section_data
2156 extern bfd_boolean _bfd_elf_init_private_section_data
2157 (bfd
*, asection
*, bfd
*, asection
*, struct bfd_link_info
*);
2158 extern bfd_boolean _bfd_elf_copy_private_section_data
2159 (bfd
*, asection
*, bfd
*, asection
*);
2160 extern bfd_boolean _bfd_elf_write_object_contents
2162 extern bfd_boolean _bfd_elf_write_corefile_contents
2164 extern bfd_boolean _bfd_elf_set_section_contents
2165 (bfd
*, sec_ptr
, const void *, file_ptr
, bfd_size_type
);
2166 extern long _bfd_elf_get_symtab_upper_bound
2168 extern long _bfd_elf_canonicalize_symtab
2169 (bfd
*, asymbol
**);
2170 extern long _bfd_elf_get_dynamic_symtab_upper_bound
2172 extern long _bfd_elf_canonicalize_dynamic_symtab
2173 (bfd
*, asymbol
**);
2174 extern long _bfd_elf_get_synthetic_symtab
2175 (bfd
*, long, asymbol
**, long, asymbol
**, asymbol
**);
2176 extern long _bfd_elf_get_reloc_upper_bound
2178 extern long _bfd_elf_canonicalize_reloc
2179 (bfd
*, sec_ptr
, arelent
**, asymbol
**);
2180 extern asection
* _bfd_elf_get_dynamic_reloc_section
2181 (bfd
*, asection
*, bfd_boolean
);
2182 extern asection
* _bfd_elf_make_dynamic_reloc_section
2183 (asection
*, bfd
*, unsigned int, bfd
*, bfd_boolean
);
2184 extern long _bfd_elf_get_dynamic_reloc_upper_bound
2186 extern long _bfd_elf_canonicalize_dynamic_reloc
2187 (bfd
*, arelent
**, asymbol
**);
2188 extern asymbol
*_bfd_elf_make_empty_symbol
2190 extern void _bfd_elf_get_symbol_info
2191 (bfd
*, asymbol
*, symbol_info
*);
2192 extern bfd_boolean _bfd_elf_is_local_label_name
2193 (bfd
*, const char *);
2194 extern alent
*_bfd_elf_get_lineno
2196 extern bfd_boolean _bfd_elf_set_arch_mach
2197 (bfd
*, enum bfd_architecture
, unsigned long);
2198 extern bfd_boolean _bfd_elf_find_nearest_line
2199 (bfd
*, asymbol
**, asection
*, bfd_vma
,
2200 const char **, const char **, unsigned int *, unsigned int *);
2201 extern bfd_boolean _bfd_elf_find_line
2202 (bfd
*, asymbol
**, asymbol
*, const char **, unsigned int *);
2203 extern bfd_boolean _bfd_elf_find_inliner_info
2204 (bfd
*, const char **, const char **, unsigned int *);
2205 extern asymbol
*_bfd_elf_find_function
2206 (bfd
*, asymbol
**, asection
*, bfd_vma
, const char **, const char **);
2207 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
2208 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
2209 extern int _bfd_elf_sizeof_headers
2210 (bfd
*, struct bfd_link_info
*);
2211 extern bfd_boolean _bfd_elf_new_section_hook
2212 (bfd
*, asection
*);
2213 extern const struct bfd_elf_special_section
*_bfd_elf_get_special_section
2214 (const char *, const struct bfd_elf_special_section
*, unsigned int);
2215 extern const struct bfd_elf_special_section
*_bfd_elf_get_sec_type_attr
2216 (bfd
*, asection
*);
2218 extern bfd_boolean _bfd_elf_link_hide_sym_by_version
2219 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2221 /* If the target doesn't have reloc handling written yet: */
2222 extern bfd_boolean _bfd_elf_no_info_to_howto
2223 (bfd
*, arelent
*, Elf_Internal_Rela
*);
2225 extern bfd_boolean bfd_section_from_shdr
2226 (bfd
*, unsigned int shindex
);
2227 extern bfd_boolean bfd_section_from_phdr
2228 (bfd
*, Elf_Internal_Phdr
*, int);
2230 extern int _bfd_elf_symbol_from_bfd_symbol
2231 (bfd
*, asymbol
**);
2233 extern Elf_Internal_Sym
*bfd_sym_from_r_symndx
2234 (struct sym_cache
*, bfd
*, unsigned long);
2235 extern asection
*bfd_section_from_elf_index
2236 (bfd
*, unsigned int);
2238 extern struct elf_strtab_hash
* _bfd_elf_strtab_init
2240 extern void _bfd_elf_strtab_free
2241 (struct elf_strtab_hash
*);
2242 extern size_t _bfd_elf_strtab_add
2243 (struct elf_strtab_hash
*, const char *, bfd_boolean
);
2244 extern void _bfd_elf_strtab_addref
2245 (struct elf_strtab_hash
*, size_t);
2246 extern void _bfd_elf_strtab_delref
2247 (struct elf_strtab_hash
*, size_t);
2248 extern unsigned int _bfd_elf_strtab_refcount
2249 (struct elf_strtab_hash
*, size_t);
2250 extern void _bfd_elf_strtab_clear_all_refs
2251 (struct elf_strtab_hash
*);
2252 extern void *_bfd_elf_strtab_save
2253 (struct elf_strtab_hash
*);
2254 extern void _bfd_elf_strtab_restore
2255 (struct elf_strtab_hash
*, void *);
2256 extern bfd_size_type _bfd_elf_strtab_size
2257 (struct elf_strtab_hash
*);
2258 extern bfd_size_type _bfd_elf_strtab_len
2259 (struct elf_strtab_hash
*);
2260 extern bfd_size_type _bfd_elf_strtab_offset
2261 (struct elf_strtab_hash
*, size_t);
2262 extern const char * _bfd_elf_strtab_str
2263 (struct elf_strtab_hash
*, size_t idx
, bfd_size_type
*offset
);
2264 extern bfd_boolean _bfd_elf_strtab_emit
2265 (bfd
*, struct elf_strtab_hash
*);
2266 extern void _bfd_elf_strtab_finalize
2267 (struct elf_strtab_hash
*);
2269 extern bfd_boolean bfd_elf_parse_eh_frame_entries
2270 (bfd
*, struct bfd_link_info
*);
2271 extern bfd_boolean _bfd_elf_parse_eh_frame_entry
2272 (struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2273 extern void _bfd_elf_parse_eh_frame
2274 (bfd
*, struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2275 extern bfd_boolean _bfd_elf_end_eh_frame_parsing
2276 (struct bfd_link_info
*info
);
2278 extern bfd_boolean _bfd_elf_discard_section_eh_frame
2279 (bfd
*, struct bfd_link_info
*, asection
*,
2280 bfd_boolean (*) (bfd_vma
, void *), struct elf_reloc_cookie
*);
2281 extern bfd_boolean _bfd_elf_adjust_eh_frame_global_symbol
2282 (struct elf_link_hash_entry
*, void *);
2283 extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
2284 (bfd
*, struct bfd_link_info
*);
2285 extern bfd_vma _bfd_elf_eh_frame_section_offset
2286 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2287 extern bfd_boolean _bfd_elf_write_section_eh_frame
2288 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2289 bfd_boolean _bfd_elf_write_section_eh_frame_entry
2290 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2291 extern bfd_boolean
_bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info
*);
2292 extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
2293 (bfd
*, struct bfd_link_info
*);
2294 extern bfd_boolean _bfd_elf_eh_frame_present
2295 (struct bfd_link_info
*);
2296 extern bfd_boolean _bfd_elf_eh_frame_entry_present
2297 (struct bfd_link_info
*);
2298 extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
2299 (struct bfd_link_info
*);
2301 extern bfd_boolean
_bfd_elf_hash_symbol (struct elf_link_hash_entry
*);
2303 extern long _bfd_elf_link_lookup_local_dynindx
2304 (struct bfd_link_info
*, bfd
*, long);
2305 extern bfd_boolean _bfd_elf_compute_section_file_positions
2306 (bfd
*, struct bfd_link_info
*);
2307 extern file_ptr _bfd_elf_assign_file_position_for_section
2308 (Elf_Internal_Shdr
*, file_ptr
, bfd_boolean
);
2309 extern bfd_boolean _bfd_elf_modify_headers
2310 (bfd
*, struct bfd_link_info
*);
2312 extern bfd_boolean _bfd_elf_validate_reloc
2315 extern bfd_boolean bfd_elf_record_link_assignment
2316 (bfd
*, struct bfd_link_info
*, const char *, bfd_boolean
,
2318 extern bfd_boolean
bfd_elf_stack_segment_size (bfd
*, struct bfd_link_info
*,
2319 const char *, bfd_vma
);
2320 extern bfd_boolean bfd_elf_size_dynamic_sections
2321 (bfd
*, const char *, const char *, const char *, const char *, const char *,
2322 const char * const *, struct bfd_link_info
*, struct bfd_section
**);
2323 extern bfd_boolean bfd_elf_size_dynsym_hash_dynstr
2324 (bfd
*, struct bfd_link_info
*);
2325 extern bfd_boolean bfd_elf_get_bfd_needed_list
2326 (bfd
*, struct bfd_link_needed_list
**);
2327 extern struct bfd_link_needed_list
*bfd_elf_get_needed_list
2328 (bfd
*, struct bfd_link_info
*);
2329 extern void bfd_elf_set_dt_needed_name
2330 (bfd
*, const char *);
2331 extern const char *bfd_elf_get_dt_soname
2333 extern void bfd_elf_set_dyn_lib_class
2334 (bfd
*, enum dynamic_lib_link_class
);
2335 extern int bfd_elf_get_dyn_lib_class
2337 extern struct bfd_link_needed_list
*bfd_elf_get_runpath_list
2338 (bfd
*, struct bfd_link_info
*);
2339 extern int bfd_elf_discard_info
2340 (bfd
*, struct bfd_link_info
*);
2341 extern unsigned int _bfd_elf_default_action_discarded
2342 (struct bfd_section
*);
2343 extern struct bfd_section
*_bfd_elf_tls_setup
2344 (bfd
*, struct bfd_link_info
*);
2346 extern bfd_boolean _bfd_elf_link_create_dynamic_sections
2347 (bfd
*, struct bfd_link_info
*);
2348 extern bfd_boolean _bfd_elf_omit_section_dynsym_default
2349 (bfd
*, struct bfd_link_info
*, asection
*);
2350 extern bfd_boolean _bfd_elf_omit_section_dynsym_all
2351 (bfd
*, struct bfd_link_info
*, asection
*);
2352 extern bfd_boolean _bfd_elf_create_dynamic_sections
2353 (bfd
*, struct bfd_link_info
*);
2354 extern bfd_boolean _bfd_elf_create_got_section
2355 (bfd
*, struct bfd_link_info
*);
2356 extern asection
*_bfd_elf_section_for_symbol
2357 (struct elf_reloc_cookie
*, unsigned long, bfd_boolean
);
2358 extern struct elf_link_hash_entry
*_bfd_elf_define_linkage_sym
2359 (bfd
*, struct bfd_link_info
*, asection
*, const char *);
2360 extern void _bfd_elf_init_1_index_section
2361 (bfd
*, struct bfd_link_info
*);
2362 extern void _bfd_elf_init_2_index_sections
2363 (bfd
*, struct bfd_link_info
*);
2365 extern bfd_boolean _bfd_elfcore_make_pseudosection
2366 (bfd
*, char *, size_t, ufile_ptr
);
2367 extern char *_bfd_elfcore_strndup
2368 (bfd
*, char *, size_t);
2370 extern Elf_Internal_Rela
*_bfd_elf_link_read_relocs
2371 (bfd
*, asection
*, void *, Elf_Internal_Rela
*, bfd_boolean
);
2373 extern bfd_boolean _bfd_elf_link_output_relocs
2374 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
2375 struct elf_link_hash_entry
**);
2377 extern bfd_boolean _bfd_elf_adjust_dynamic_copy
2378 (struct bfd_link_info
*, struct elf_link_hash_entry
*, asection
*);
2380 extern bfd_boolean _bfd_elf_dynamic_symbol_p
2381 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2383 extern bfd_boolean _bfd_elf_symbol_refs_local_p
2384 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2386 extern bfd_reloc_status_type bfd_elf_perform_complex_relocation
2387 (bfd
*, asection
*, bfd_byte
*, Elf_Internal_Rela
*, bfd_vma
);
2389 extern bfd_boolean _bfd_elf_setup_sections
2392 extern struct bfd_link_hash_entry
*bfd_elf_define_start_stop
2393 (struct bfd_link_info
*, const char *, asection
*);
2395 extern bfd_boolean
_bfd_elf_init_file_header (bfd
*, struct bfd_link_info
*);
2397 extern bfd_boolean
_bfd_elf_final_write_processing (bfd
*);
2399 extern const bfd_target
*bfd_elf32_object_p
2401 extern const bfd_target
*bfd_elf32_core_file_p
2403 extern char *bfd_elf32_core_file_failing_command
2405 extern int bfd_elf32_core_file_failing_signal
2407 extern bfd_boolean bfd_elf32_core_file_matches_executable_p
2409 extern int bfd_elf32_core_file_pid
2411 extern bfd_boolean _bfd_elf32_core_find_build_id
2414 extern bfd_boolean bfd_elf32_swap_symbol_in
2415 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2416 extern void bfd_elf32_swap_symbol_out
2417 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2418 extern void bfd_elf32_swap_reloc_in
2419 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2420 extern void bfd_elf32_swap_reloc_out
2421 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2422 extern void bfd_elf32_swap_reloca_in
2423 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2424 extern void bfd_elf32_swap_reloca_out
2425 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2426 extern void bfd_elf32_swap_phdr_in
2427 (bfd
*, const Elf32_External_Phdr
*, Elf_Internal_Phdr
*);
2428 extern void bfd_elf32_swap_phdr_out
2429 (bfd
*, const Elf_Internal_Phdr
*, Elf32_External_Phdr
*);
2430 extern void bfd_elf32_swap_dyn_in
2431 (bfd
*, const void *, Elf_Internal_Dyn
*);
2432 extern void bfd_elf32_swap_dyn_out
2433 (bfd
*, const Elf_Internal_Dyn
*, void *);
2434 extern long bfd_elf32_slurp_symbol_table
2435 (bfd
*, asymbol
**, bfd_boolean
);
2436 extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
2438 extern int bfd_elf32_write_out_phdrs
2439 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2440 extern bfd_boolean bfd_elf32_checksum_contents
2441 (bfd
* , void (*) (const void *, size_t, void *), void *);
2442 extern void bfd_elf32_write_relocs
2443 (bfd
*, asection
*, void *);
2444 extern bfd_boolean bfd_elf32_slurp_reloc_table
2445 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2447 extern const bfd_target
*bfd_elf64_object_p
2449 extern const bfd_target
*bfd_elf64_core_file_p
2451 extern char *bfd_elf64_core_file_failing_command
2453 extern int bfd_elf64_core_file_failing_signal
2455 extern bfd_boolean bfd_elf64_core_file_matches_executable_p
2457 extern int bfd_elf64_core_file_pid
2459 extern bfd_boolean _bfd_elf64_core_find_build_id
2462 extern bfd_boolean bfd_elf64_swap_symbol_in
2463 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2464 extern void bfd_elf64_swap_symbol_out
2465 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2466 extern void bfd_elf64_swap_reloc_in
2467 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2468 extern void bfd_elf64_swap_reloc_out
2469 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2470 extern void bfd_elf64_swap_reloca_in
2471 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2472 extern void bfd_elf64_swap_reloca_out
2473 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2474 extern void bfd_elf64_swap_phdr_in
2475 (bfd
*, const Elf64_External_Phdr
*, Elf_Internal_Phdr
*);
2476 extern void bfd_elf64_swap_phdr_out
2477 (bfd
*, const Elf_Internal_Phdr
*, Elf64_External_Phdr
*);
2478 extern void bfd_elf64_swap_dyn_in
2479 (bfd
*, const void *, Elf_Internal_Dyn
*);
2480 extern void bfd_elf64_swap_dyn_out
2481 (bfd
*, const Elf_Internal_Dyn
*, void *);
2482 extern long bfd_elf64_slurp_symbol_table
2483 (bfd
*, asymbol
**, bfd_boolean
);
2484 extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
2486 extern int bfd_elf64_write_out_phdrs
2487 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2488 extern bfd_boolean bfd_elf64_checksum_contents
2489 (bfd
* , void (*) (const void *, size_t, void *), void *);
2490 extern void bfd_elf64_write_relocs
2491 (bfd
*, asection
*, void *);
2492 extern bfd_boolean bfd_elf64_slurp_reloc_table
2493 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2495 extern bfd_boolean _bfd_elf_default_relocs_compatible
2496 (const bfd_target
*, const bfd_target
*);
2498 extern bfd_boolean _bfd_elf_relocs_compatible
2499 (const bfd_target
*, const bfd_target
*);
2500 extern bfd_boolean _bfd_elf_notice_as_needed
2501 (bfd
*, struct bfd_link_info
*, enum notice_asneeded_action
);
2503 extern struct elf_link_hash_entry
*_bfd_elf_archive_symbol_lookup
2504 (bfd
*, struct bfd_link_info
*, const char *);
2505 extern bfd_boolean bfd_elf_link_add_symbols
2506 (bfd
*, struct bfd_link_info
*);
2507 extern bfd_boolean _bfd_elf_add_dynamic_entry
2508 (struct bfd_link_info
*, bfd_vma
, bfd_vma
);
2509 extern bfd_boolean _bfd_elf_link_check_relocs
2510 (bfd
*, struct bfd_link_info
*);
2512 extern bfd_boolean bfd_elf_link_record_dynamic_symbol
2513 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2515 extern int bfd_elf_link_record_local_dynamic_symbol
2516 (struct bfd_link_info
*, bfd
*, long);
2518 extern bfd_boolean _bfd_elf_close_and_cleanup
2521 extern bfd_boolean _bfd_elf_common_definition
2522 (Elf_Internal_Sym
*);
2524 extern unsigned int _bfd_elf_common_section_index
2527 extern asection
*_bfd_elf_common_section
2530 extern bfd_vma _bfd_elf_default_got_elt_size
2531 (bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd
*,
2534 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
2535 (bfd
*, arelent
*, struct bfd_symbol
*, void *,
2536 asection
*, bfd
*, char **);
2538 extern bfd_boolean bfd_elf_final_link
2539 (bfd
*, struct bfd_link_info
*);
2541 extern void _bfd_elf_gc_keep
2542 (struct bfd_link_info
*info
);
2544 extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
2545 (struct elf_link_hash_entry
*h
, void *inf
);
2547 extern bfd_boolean bfd_elf_gc_sections
2548 (bfd
*, struct bfd_link_info
*);
2550 extern bfd_boolean bfd_elf_gc_record_vtinherit
2551 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2553 extern bfd_boolean bfd_elf_gc_record_vtentry
2554 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2556 extern asection
*_bfd_elf_gc_mark_hook
2557 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
2558 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
2560 extern asection
*_bfd_elf_gc_mark_rsec
2561 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2562 struct elf_reloc_cookie
*, bfd_boolean
*);
2564 extern bfd_boolean _bfd_elf_gc_mark_reloc
2565 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2566 struct elf_reloc_cookie
*);
2568 extern bfd_boolean _bfd_elf_gc_mark_fdes
2569 (struct bfd_link_info
*, asection
*, asection
*, elf_gc_mark_hook_fn
,
2570 struct elf_reloc_cookie
*);
2572 extern bfd_boolean _bfd_elf_gc_mark
2573 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
);
2575 extern bfd_boolean _bfd_elf_gc_mark_extra_sections
2576 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
2578 extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
2579 (bfd
*, struct bfd_link_info
*);
2581 extern bfd_boolean bfd_elf_gc_common_final_link
2582 (bfd
*, struct bfd_link_info
*);
2584 extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
2587 extern struct elf_segment_map
* _bfd_elf_make_dynamic_segment
2588 (bfd
*, asection
*);
2590 extern bfd_boolean _bfd_elf_map_sections_to_segments
2591 (bfd
*, struct bfd_link_info
*);
2593 extern bfd_boolean
_bfd_elf_is_function_type (unsigned int);
2595 extern bfd_size_type
_bfd_elf_maybe_function_sym (const asymbol
*, asection
*,
2598 extern asection
*_bfd_elf_plt_get_reloc_section (bfd
*, const char *);
2600 extern int bfd_elf_get_default_section_type (flagword
);
2602 extern bfd_boolean bfd_elf_lookup_section_flags
2603 (struct bfd_link_info
*, struct flag_info
*, asection
*);
2605 extern Elf_Internal_Phdr
* _bfd_elf_find_segment_containing_section
2606 (bfd
* abfd
, asection
* section
);
2608 /* PowerPC @tls opcode transform/validate. */
2609 extern unsigned int _bfd_elf_ppc_at_tls_transform
2610 (unsigned int, unsigned int);
2611 /* PowerPC @tprel opcode transform/validate. */
2612 extern unsigned int _bfd_elf_ppc_at_tprel_transform
2613 (unsigned int, unsigned int);
2614 /* PowerPC elf_object_p tweak. */
2615 extern bfd_boolean
_bfd_elf_ppc_set_arch (bfd
*);
2616 /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */
2617 extern bfd_boolean _bfd_elf_ppc_merge_fp_attributes
2618 (bfd
*, struct bfd_link_info
*);
2620 /* Return an upper bound on the number of bytes required to store a
2621 copy of ABFD's program header table entries. Return -1 if an error
2622 occurs; bfd_get_error will return an appropriate code. */
2623 extern long bfd_get_elf_phdr_upper_bound
2626 /* Copy ABFD's program header table entries to *PHDRS. The entries
2627 will be stored as an array of Elf_Internal_Phdr structures, as
2628 defined in include/elf/internal.h. To find out how large the
2629 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
2631 Return the number of program header table entries read, or -1 if an
2632 error occurs; bfd_get_error will return an appropriate code. */
2633 extern int bfd_get_elf_phdrs
2634 (bfd
*abfd
, void *phdrs
);
2636 /* Exported interface for writing elf corefile notes. */
2637 extern char *elfcore_write_note
2638 (bfd
*, char *, int *, const char *, int, const void *, int);
2639 extern char *elfcore_write_prpsinfo
2640 (bfd
*, char *, int *, const char *, const char *);
2641 extern char *elfcore_write_prstatus
2642 (bfd
*, char *, int *, long, int, const void *);
2643 extern char * elfcore_write_pstatus
2644 (bfd
*, char *, int *, long, int, const void *);
2645 extern char *elfcore_write_prfpreg
2646 (bfd
*, char *, int *, const void *, int);
2647 extern char *elfcore_write_prxfpreg
2648 (bfd
*, char *, int *, const void *, int);
2649 extern char *elfcore_write_xstatereg
2650 (bfd
*, char *, int *, const void *, int);
2651 extern char *elfcore_write_ppc_vmx
2652 (bfd
*, char *, int *, const void *, int);
2653 extern char *elfcore_write_ppc_vsx
2654 (bfd
*, char *, int *, const void *, int);
2655 extern char *elfcore_write_ppc_tar
2656 (bfd
*, char *, int *, const void *, int);
2657 extern char *elfcore_write_ppc_ppr
2658 (bfd
*, char *, int *, const void *, int);
2659 extern char *elfcore_write_ppc_dscr
2660 (bfd
*, char *, int *, const void *, int);
2661 extern char *elfcore_write_ppc_ebb
2662 (bfd
*, char *, int *, const void *, int);
2663 extern char *elfcore_write_ppc_pmu
2664 (bfd
*, char *, int *, const void *, int);
2665 extern char *elfcore_write_ppc_tm_cgpr
2666 (bfd
*, char *, int *, const void *, int);
2667 extern char *elfcore_write_ppc_tm_cfpr
2668 (bfd
*, char *, int *, const void *, int);
2669 extern char *elfcore_write_ppc_tm_cvmx
2670 (bfd
*, char *, int *, const void *, int);
2671 extern char *elfcore_write_ppc_tm_cvsx
2672 (bfd
*, char *, int *, const void *, int);
2673 extern char *elfcore_write_ppc_tm_spr
2674 (bfd
*, char *, int *, const void *, int);
2675 extern char *elfcore_write_ppc_tm_ctar
2676 (bfd
*, char *, int *, const void *, int);
2677 extern char *elfcore_write_ppc_tm_cppr
2678 (bfd
*, char *, int *, const void *, int);
2679 extern char *elfcore_write_ppc_tm_cdscr
2680 (bfd
*, char *, int *, const void *, int);
2681 extern char *elfcore_write_s390_timer
2682 (bfd
*, char *, int *, const void *, int);
2683 extern char *elfcore_write_s390_todcmp
2684 (bfd
*, char *, int *, const void *, int);
2685 extern char *elfcore_write_s390_todpreg
2686 (bfd
*, char *, int *, const void *, int);
2687 extern char *elfcore_write_s390_ctrs
2688 (bfd
*, char *, int *, const void *, int);
2689 extern char *elfcore_write_s390_prefix
2690 (bfd
*, char *, int *, const void *, int);
2691 extern char *elfcore_write_s390_last_break
2692 (bfd
*, char *, int *, const void *, int);
2693 extern char *elfcore_write_s390_system_call
2694 (bfd
*, char *, int *, const void *, int);
2695 extern char *elfcore_write_s390_tdb
2696 (bfd
*, char *, int *, const void *, int);
2697 extern char *elfcore_write_s390_vxrs_low
2698 (bfd
*, char *, int *, const void *, int);
2699 extern char *elfcore_write_s390_vxrs_high
2700 (bfd
*, char *, int *, const void *, int);
2701 extern char *elfcore_write_s390_gs_cb
2702 (bfd
*, char *, int *, const void *, int);
2703 extern char *elfcore_write_s390_gs_bc
2704 (bfd
*, char *, int *, const void *, int);
2705 extern char *elfcore_write_arm_vfp
2706 (bfd
*, char *, int *, const void *, int);
2707 extern char *elfcore_write_aarch_tls
2708 (bfd
*, char *, int *, const void *, int);
2709 extern char *elfcore_write_aarch_hw_break
2710 (bfd
*, char *, int *, const void *, int);
2711 extern char *elfcore_write_aarch_hw_watch
2712 (bfd
*, char *, int *, const void *, int);
2713 extern char *elfcore_write_aarch_sve
2714 (bfd
*, char *, int *, const void *, int);
2715 extern char *elfcore_write_aarch_pauth
2716 (bfd
*, char *, int *, const void *, int);
2717 extern char *elfcore_write_lwpstatus
2718 (bfd
*, char *, int *, long, int, const void *);
2719 extern char *elfcore_write_register_note
2720 (bfd
*, char *, int *, const char *, const void *, int);
2722 /* Internal structure which holds information to be included in the
2723 PRPSINFO section of Linux core files.
2725 This is an "internal" structure in the sense that it should be used
2726 to pass information to BFD (via the `elfcore_write_linux_prpsinfo'
2727 function), so things like endianess shouldn't be an issue. This
2728 structure will eventually be converted in one of the
2729 `elf_external_linux_*' structures and written out to an output bfd
2730 by one of the functions declared below. */
2732 struct elf_internal_linux_prpsinfo
2734 char pr_state
; /* Numeric process state. */
2735 char pr_sname
; /* Char for pr_state. */
2736 char pr_zomb
; /* Zombie. */
2737 char pr_nice
; /* Nice val. */
2738 unsigned long pr_flag
; /* Flags. */
2739 unsigned int pr_uid
;
2740 unsigned int pr_gid
;
2741 int pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
2742 char pr_fname
[16 + 1]; /* Filename of executable. */
2743 char pr_psargs
[80 + 1]; /* Initial part of arg list. */
2746 /* Linux/most 32-bit archs. */
2747 extern char *elfcore_write_linux_prpsinfo32
2748 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2750 /* Linux/most 64-bit archs. */
2751 extern char *elfcore_write_linux_prpsinfo64
2752 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2754 extern bfd
*_bfd_elf32_bfd_from_remote_memory
2755 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2756 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2757 extern bfd
*_bfd_elf64_bfd_from_remote_memory
2758 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2759 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2761 extern bfd_vma
bfd_elf_obj_attr_size (bfd
*);
2762 extern void bfd_elf_set_obj_attr_contents (bfd
*, bfd_byte
*, bfd_vma
);
2763 extern int bfd_elf_get_obj_attr_int (bfd
*, int, unsigned int);
2764 extern void bfd_elf_add_obj_attr_int (bfd
*, int, unsigned int, unsigned int);
2765 #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
2766 bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2767 extern void bfd_elf_add_obj_attr_string (bfd
*, int, unsigned int, const char *);
2768 #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
2769 bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2770 extern void bfd_elf_add_obj_attr_int_string (bfd
*, int, unsigned int,
2771 unsigned int, const char *);
2772 #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
2773 bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
2776 extern char *_bfd_elf_attr_strdup (bfd
*, const char *);
2777 extern void _bfd_elf_copy_obj_attributes (bfd
*, bfd
*);
2778 extern int _bfd_elf_obj_attrs_arg_type (bfd
*, int, unsigned int);
2779 extern void _bfd_elf_parse_attributes (bfd
*, Elf_Internal_Shdr
*);
2780 extern bfd_boolean _bfd_elf_merge_object_attributes
2781 (bfd
*, struct bfd_link_info
*);
2782 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_low (bfd
*, bfd
*, int);
2783 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_list (bfd
*, bfd
*);
2784 extern Elf_Internal_Shdr
*_bfd_elf_single_rel_hdr (asection
*sec
);
2785 extern bfd_boolean
elf_read_notes (bfd
*, file_ptr
, bfd_size_type
, size_t);
2787 extern bfd_boolean _bfd_elf_parse_gnu_properties
2788 (bfd
*, Elf_Internal_Note
*);
2789 extern elf_property
* _bfd_elf_get_property
2790 (bfd
*, unsigned int, unsigned int);
2791 extern bfd
*_bfd_elf_link_setup_gnu_properties
2792 (struct bfd_link_info
*);
2793 extern bfd_size_type _bfd_elf_convert_gnu_property_size
2795 extern bfd_boolean _bfd_elf_convert_gnu_properties
2796 (bfd
*, asection
*, bfd
*, bfd_byte
**, bfd_size_type
*);
2798 /* The linker may need to keep track of the number of relocs that it
2799 decides to copy as dynamic relocs in check_relocs for each symbol.
2800 This is so that it can later discard them if they are found to be
2801 unnecessary. We can store the information in a field extending the
2802 regular ELF linker hash table. */
2804 struct elf_dyn_relocs
2806 struct elf_dyn_relocs
*next
;
2808 /* The input section of the reloc. */
2811 /* Total number of relocs copied for the input section. */
2812 bfd_size_type count
;
2814 /* Number of pc-relative relocs copied for the input section. */
2815 bfd_size_type pc_count
;
2818 extern bfd_boolean _bfd_elf_create_ifunc_sections
2819 (bfd
*, struct bfd_link_info
*);
2820 extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
2821 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2822 struct elf_dyn_relocs
**, bfd_boolean
*, unsigned int,
2823 unsigned int, unsigned int, bfd_boolean
);
2825 extern void elf_append_rela (bfd
*, asection
*, Elf_Internal_Rela
*);
2826 extern void elf_append_rel (bfd
*, asection
*, Elf_Internal_Rela
*);
2828 extern bfd_vma
elf64_r_info (bfd_vma
, bfd_vma
);
2829 extern bfd_vma
elf64_r_sym (bfd_vma
);
2830 extern bfd_vma
elf32_r_info (bfd_vma
, bfd_vma
);
2831 extern bfd_vma
elf32_r_sym (bfd_vma
);
2833 extern bfd_boolean
is_debuginfo_file (bfd
*);
2835 /* Large common section. */
2836 extern asection _bfd_elf_large_com_section
;
2838 /* Hash for local symbol with the first section id, ID, in the input
2839 file and the local symbol index, SYM. */
2840 #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
2841 (((((ID) & 0xffU) << 24) | (((ID) & 0xff00) << 8)) \
2842 ^ (SYM) ^ (((ID) & 0xffff0000U) >> 16))
2844 /* This is the condition under which finish_dynamic_symbol will be called.
2845 If our finish_dynamic_symbol isn't called, we'll need to do something
2846 about initializing any .plt and .got entries in relocate_section. */
2847 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
2849 && ((SHARED) || !(H)->forced_local) \
2850 && ((H)->dynindx != -1 || (H)->forced_local))
2852 /* This macro is to avoid lots of duplicated code in the body
2853 of xxx_relocate_section() in the various elfxx-xxxx.c files. */
2854 #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \
2855 r_symndx, symtab_hdr, sym_hashes, \
2856 h, sec, relocation, \
2857 unresolved_reloc, warned, ignored) \
2860 /* It seems this can happen with erroneous or unsupported \
2861 input (mixing a.out and elf in an archive, for example.) */ \
2862 if (sym_hashes == NULL) \
2865 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \
2867 if (info->wrap_hash != NULL \
2868 && (input_section->flags & SEC_DEBUGGING) != 0) \
2869 h = ((struct elf_link_hash_entry *) \
2870 unwrap_hash_lookup (info, input_bfd, &h->root)); \
2872 while (h->root.type == bfd_link_hash_indirect \
2873 || h->root.type == bfd_link_hash_warning) \
2874 h = (struct elf_link_hash_entry *) h->root.u.i.link; \
2878 unresolved_reloc = FALSE; \
2880 if (h->root.type == bfd_link_hash_defined \
2881 || h->root.type == bfd_link_hash_defweak) \
2883 sec = h->root.u.def.section; \
2885 || sec->output_section == NULL) \
2886 /* Set a flag that will be cleared later if we find a \
2887 relocation value for this symbol. output_section \
2888 is typically NULL for symbols satisfied by a shared \
2890 unresolved_reloc = TRUE; \
2892 relocation = (h->root.u.def.value \
2893 + sec->output_section->vma \
2894 + sec->output_offset); \
2896 else if (h->root.type == bfd_link_hash_undefweak) \
2898 else if (info->unresolved_syms_in_objects == RM_IGNORE \
2899 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \
2901 else if (!bfd_link_relocatable (info)) \
2904 err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \
2905 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \
2906 (*info->callbacks->undefined_symbol) (info, \
2907 h->root.root.string, \
2910 rel->r_offset, err); \
2913 (void) unresolved_reloc; \
2919 /* This macro is to avoid lots of duplicated code in the body of the
2920 loop over relocations in xxx_relocate_section() in the various
2923 Handle relocations against symbols from removed linkonce sections,
2924 or sections discarded by a linker script. When doing a relocatable
2925 link, we remove such relocations. Otherwise, we just want the
2926 section contents zeroed and avoid any special processing. */
2927 #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
2928 rel, count, relend, \
2929 howto, index, contents) \
2932 _bfd_clear_contents (howto, input_bfd, input_section, \
2933 contents, rel[index].r_offset); \
2935 if (bfd_link_relocatable (info) \
2936 && (input_section->flags & SEC_DEBUGGING)) \
2938 /* Only remove relocations in debug sections since other \
2939 sections may require relocations. */ \
2940 Elf_Internal_Shdr *rel_hdr; \
2942 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
2944 /* Avoid empty output section. */ \
2945 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
2947 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2948 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
2949 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
2951 memmove (rel, rel + count, \
2952 (relend - rel - count) * sizeof (*rel)); \
2954 input_section->reloc_count -= count; \
2961 for (i_ = 0; i_ < count; i_++) \
2963 rel[i_].r_info = 0; \
2964 rel[i_].r_addend = 0; \
2970 /* Will a symbol be bound to the definition within the shared
2971 library, if any. A unique symbol can never be bound locally. */
2972 #define SYMBOLIC_BIND(INFO, H) \
2973 (!(H)->unique_global \
2974 && ((INFO)->symbolic \
2975 || (H)->start_stop \
2976 || ((INFO)->dynamic && !(H)->dynamic)))
2978 /* Determine if a section contains CTF data, using its name. */
2979 static inline bfd_boolean
2980 bfd_section_is_ctf (const asection
*sec
)
2982 const char *name
= bfd_section_name (sec
);
2983 return strncmp (name
, ".ctf", 4) == 0 && (name
[4] == 0 || name
[4] == '.');
2989 #endif /* _LIBELF_H_ */