1 /* BFD back-end data structures for ELF files.
2 Copyright (C) 1992-2020 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
25 #include "elf/common.h"
26 #include "elf/external.h"
27 #include "elf/internal.h"
34 /* The number of entries in a section is its size divided by the size
35 of a single entry. This is normally only applicable to reloc and
36 symbol table sections.
37 PR 9934: It is possible to have relocations that do not refer to
38 symbols, thus it is also possible to have a relocation section in
39 an object file, but no symbol table. */
40 #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0)
42 /* If size isn't specified as 64 or 32, NAME macro should fail. */
45 #define NAME(x, y) x ## 64 ## _ ## y
48 #define NAME(x, y) x ## 32 ## _ ## y
53 #define NAME(x, y) x ## NOSIZE ## _ ## y
56 #define ElfNAME(X) NAME(Elf,X)
57 #define elfNAME(X) NAME(elf,X)
59 /* Information held for an ELF symbol. The first field is the
60 corresponding asymbol. Every symbol is an ELF file is actually a
61 pointer to this structure, although it is often handled as a
62 pointer to an asymbol. */
68 /* ELF symbol information. */
69 Elf_Internal_Sym internal_elf_sym
;
70 /* Backend specific information. */
73 unsigned int hppa_arg_reloc
;
79 /* Version information. This is from an Elf_Internal_Versym
80 structure in a SHT_GNU_versym section. It is zero if there is no
81 version information. */
82 unsigned short version
;
86 struct elf_strtab_hash
;
92 bfd_signed_vma refcount
;
94 struct got_entry
*glist
;
95 struct plt_entry
*plist
;
98 struct elf_link_virtual_table_entry
100 /* Virtual table entry use information. This array is nominally of size
101 size/sizeof(target_void_pointer), though we have to be able to assume
102 and track a size while the symbol is still undefined. It is indexed
103 via offset/sizeof(target_void_pointer). */
107 /* Virtual table derivation info. */
108 struct elf_link_hash_entry
*parent
;
111 /* ELF symbol version. */
112 enum elf_symbol_version
120 /* ELF linker hash table entries. */
122 struct elf_link_hash_entry
124 struct bfd_link_hash_entry root
;
126 /* Symbol index in output file. This is initialized to -1. It is
127 set to -2 if the symbol is used by a reloc. It is set to -3 if
128 this symbol is defined in a discarded section. */
131 /* Symbol index as a dynamic symbol. Initialized to -1, and remains
132 -1 if this is not a dynamic symbol. */
133 /* ??? Note that this is consistently used as a synonym for tests
134 against whether we can perform various simplifying transformations
135 to the code. (E.g. changing a pc-relative jump to a PLT entry
136 into a pc-relative jump to the target function.) That test, which
137 is often relatively complex, and someplaces wrong or incomplete,
138 should really be replaced by a predicate in elflink.c.
140 End result: this field -1 does not indicate that the symbol is
141 not in the dynamic symbol table, but rather that the symbol is
142 not visible outside this DSO. */
145 /* If this symbol requires an entry in the global offset table, the
146 processor specific backend uses this field to track usage and
147 final offset. Two schemes are supported: The first assumes that
148 a symbol may only have one GOT entry, and uses REFCOUNT until
149 size_dynamic_sections, at which point the contents of the .got is
150 fixed. Afterward, if OFFSET is -1, then the symbol does not
151 require a global offset table entry. The second scheme allows
152 multiple GOT entries per symbol, managed via a linked list
153 pointed to by GLIST. */
154 union gotplt_union got
;
156 /* Same, but tracks a procedure linkage table entry. */
157 union gotplt_union plt
;
159 /* Symbol size. NB: All fields starting from here are cleared by
160 _bfd_elf_link_hash_newfunc. */
163 /* Track dynamic relocs copied for this symbol. */
164 struct elf_dyn_relocs
*dyn_relocs
;
166 /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
167 unsigned int type
: 8;
169 /* Symbol st_other value, symbol visibility. */
170 unsigned int other
: 8;
172 /* The symbol's st_target_internal value (see Elf_Internal_Sym). */
173 unsigned int target_internal
: 8;
175 /* Symbol is referenced by a non-shared object (other than the object
176 in which it is defined). */
177 unsigned int ref_regular
: 1;
178 /* Symbol is defined by a non-shared object. */
179 unsigned int def_regular
: 1;
180 /* Symbol is referenced by a shared object. */
181 unsigned int ref_dynamic
: 1;
182 /* Symbol is defined by a shared object. */
183 unsigned int def_dynamic
: 1;
184 /* Symbol has a non-weak reference from a non-shared object (other than
185 the object in which it is defined). */
186 unsigned int ref_regular_nonweak
: 1;
187 /* Dynamic symbol has been adjustd. */
188 unsigned int dynamic_adjusted
: 1;
189 /* Symbol needs a copy reloc. */
190 unsigned int needs_copy
: 1;
191 /* Symbol needs a procedure linkage table entry. */
192 unsigned int needs_plt
: 1;
193 /* Symbol appears in a non-ELF input file. */
194 unsigned int non_elf
: 1;
195 /* Symbol version information. */
196 ENUM_BITFIELD (elf_symbol_version
) versioned
: 2;
197 /* Symbol was forced to local scope due to a version script file. */
198 unsigned int forced_local
: 1;
199 /* Symbol was forced to be dynamic due to a version script file. */
200 unsigned int dynamic
: 1;
201 /* Symbol was marked during garbage collection. */
202 unsigned int mark
: 1;
203 /* Symbol is referenced by a non-GOT/non-PLT relocation. This is
204 not currently set by all the backends. */
205 unsigned int non_got_ref
: 1;
206 /* Symbol has a definition in a shared object.
207 FIXME: There is no real need for this field if def_dynamic is never
208 cleared and all places that test def_dynamic also test def_regular. */
209 unsigned int dynamic_def
: 1;
210 /* Symbol has a non-weak reference from a shared object. */
211 unsigned int ref_dynamic_nonweak
: 1;
212 /* Symbol is referenced with a relocation where C/C++ pointer equality
214 unsigned int pointer_equality_needed
: 1;
215 /* Symbol is a unique global symbol. */
216 unsigned int unique_global
: 1;
217 /* Symbol is defined by a shared library with non-default visibility
218 in a read/write section. */
219 unsigned int protected_def
: 1;
220 /* Symbol is __start_SECNAME or __stop_SECNAME to mark section
222 unsigned int start_stop
: 1;
223 /* Symbol is or was a weak defined symbol from a dynamic object with
224 a strong defined symbol alias. U.ALIAS points to a list of aliases,
225 the definition having is_weakalias clear. */
226 unsigned int is_weakalias
: 1;
228 /* String table index in .dynstr if this is a dynamic symbol. */
229 unsigned long dynstr_index
;
233 /* Points to a circular list of non-function symbol aliases. */
234 struct elf_link_hash_entry
*alias
;
236 /* Hash value of the name computed using the ELF hash function.
237 Used part way through size_dynamic_sections, after we've finished
239 unsigned long elf_hash_value
;
242 /* Version information. */
245 /* This field is used for a symbol which is not defined in a
246 regular object. It points to the version information read in
247 from the dynamic object. */
248 Elf_Internal_Verdef
*verdef
;
249 /* This field is used for a symbol which is defined in a regular
250 object. It is set up in size_dynamic_sections. It points to
251 the version information we should write out for this symbol. */
252 struct bfd_elf_version_tree
*vertree
;
257 /* For __start_SECNAME and __stop_SECNAME symbols, record the first
258 input section whose section name is SECNAME. */
259 asection
*start_stop_section
;
261 /* Vtable information. */
262 struct elf_link_virtual_table_entry
*vtable
;
266 /* Return the strong definition for a weak symbol with aliases. */
268 static inline struct elf_link_hash_entry
*
269 weakdef (struct elf_link_hash_entry
*h
)
271 while (h
->is_weakalias
)
276 /* Will references to this symbol always reference the symbol
278 #define SYMBOL_REFERENCES_LOCAL(INFO, H) \
279 _bfd_elf_symbol_refs_local_p (H, INFO, 0)
281 /* Will _calls_ to this symbol always call the version in this object? */
282 #define SYMBOL_CALLS_LOCAL(INFO, H) \
283 _bfd_elf_symbol_refs_local_p (H, INFO, 1)
285 /* Whether an undefined weak symbol should resolve to its link-time
286 value, even in PIC or PIE objects. */
287 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
288 ((H)->root.type == bfd_link_hash_undefweak \
289 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
290 || (INFO)->dynamic_undefined_weak == 0))
292 /* Common symbols that are turned into definitions don't have the
293 DEF_REGULAR flag set, so they might appear to be undefined.
294 Symbols defined in linker scripts also don't have DEF_REGULAR set. */
295 #define ELF_COMMON_DEF_P(H) \
297 && !(H)->def_dynamic \
298 && (H)->root.type == bfd_link_hash_defined)
300 /* Records local symbols to be emitted in the dynamic symbol table. */
302 struct elf_link_local_dynamic_entry
304 struct elf_link_local_dynamic_entry
*next
;
306 /* The input bfd this symbol came from. */
309 /* The index of the local symbol being copied. */
312 /* The index in the outgoing dynamic symbol table. */
315 /* A copy of the input symbol. */
316 Elf_Internal_Sym isym
;
319 struct elf_link_loaded_list
321 struct elf_link_loaded_list
*next
;
325 /* Structures used by the eh_frame optimization code. */
330 /* If REMOVED == 1, this is the CIE that the FDE originally used.
331 The CIE belongs to the same .eh_frame input section as the FDE.
333 If REMOVED == 0, this is the CIE that we have chosen to use for
334 the output FDE. The CIE's REMOVED field is also 0, but the CIE
335 might belong to a different .eh_frame input section from the FDE.
337 May be NULL to signify that the FDE should be discarded. */
338 struct eh_cie_fde
*cie_inf
;
339 struct eh_cie_fde
*next_for_section
;
342 /* CIEs have three states:
344 - REMOVED && !MERGED: Slated for removal because we haven't yet
345 proven that an FDE needs it. FULL_CIE, if nonnull, points to
346 more detailed information about the CIE.
348 - REMOVED && MERGED: We have merged this CIE with MERGED_WITH,
349 which may not belong to the same input section.
351 - !REMOVED: We have decided to keep this CIE. SEC is the
352 .eh_frame input section that contains the CIE. */
354 struct cie
*full_cie
;
355 struct eh_cie_fde
*merged_with
;
359 /* The offset of the personality data from the start of the CIE,
360 or 0 if the CIE doesn't have any. */
361 unsigned int personality_offset
: 8;
363 /* Length of augmentation. aug_str_len is the length of the
364 string including null terminator. aug_data_len is the length
365 of the rest up to the initial insns. */
366 unsigned int aug_str_len
: 3;
367 unsigned int aug_data_len
: 5;
369 /* True if we have marked relocations associated with this CIE. */
370 unsigned int gc_mark
: 1;
372 /* True if we have decided to turn an absolute LSDA encoding into
373 a PC-relative one. */
374 unsigned int make_lsda_relative
: 1;
376 /* True if we have decided to turn an absolute personality
377 encoding into a PC-relative one. */
378 unsigned int make_per_encoding_relative
: 1;
380 /* True if the CIE contains personality data and if that
381 data uses a PC-relative encoding. Always true when
382 make_per_encoding_relative is. */
383 unsigned int per_encoding_relative
: 1;
385 /* True if the CIE contains personality data aligned to a
386 multiple of eight bytes. */
387 unsigned int per_encoding_aligned8
: 1;
389 /* True if we need to add an 'R' (FDE encoding) entry to the
390 CIE's augmentation data. */
391 unsigned int add_fde_encoding
: 1;
393 /* True if we have merged this CIE with another. */
394 unsigned int merged
: 1;
397 unsigned int pad1
: 9;
400 unsigned int reloc_index
;
403 unsigned int new_offset
;
404 unsigned int fde_encoding
: 8;
405 unsigned int lsda_encoding
: 8;
406 unsigned int lsda_offset
: 8;
408 /* True if this entry represents a CIE, false if it represents an FDE. */
409 unsigned int cie
: 1;
411 /* True if this entry is currently marked for removal. */
412 unsigned int removed
: 1;
414 /* True if we need to add a 'z' (augmentation size) entry to the CIE's
415 augmentation data, and an associated byte to each of the CIE's FDEs. */
416 unsigned int add_augmentation_size
: 1;
418 /* True if we have decided to convert absolute FDE relocations into
419 relative ones. This applies to the first relocation in the FDE,
420 which is against the code that the FDE describes. */
421 unsigned int make_relative
: 1;
424 unsigned int pad1
: 4;
426 unsigned int *set_loc
;
429 struct eh_frame_sec_info
433 struct eh_cie_fde entry
[1];
436 struct eh_frame_array_ent
445 #define DWARF2_EH_HDR 1
446 #define COMPACT_EH_HDR 2
448 /* Endian-neutral code indicating that a function cannot be unwound. */
449 #define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01
451 struct dwarf_eh_frame_hdr_info
454 unsigned int fde_count
;
455 /* TRUE if .eh_frame_hdr should contain the sorted search table.
456 We build it if we successfully read all .eh_frame input sections
457 and recognize them. */
459 struct eh_frame_array_ent
*array
;
462 struct compact_eh_frame_hdr_info
464 unsigned int allocated_entries
;
465 /* eh_frame_entry fragments. */
469 struct eh_frame_hdr_info
472 unsigned int array_count
;
473 bfd_boolean frame_hdr_is_compact
;
476 struct dwarf_eh_frame_hdr_info dwarf
;
477 struct compact_eh_frame_hdr_info compact
;
482 /* Enum used to identify target specific extensions to the elf_obj_tdata
483 and elf_link_hash_table structures. Note the enums deliberately start
484 from 1 so that we can detect an uninitialized field. The generic value
485 is last so that additions to this enum do not need to modify more than
489 AARCH64_ELF_DATA
= 1,
529 struct elf_sym_strtab
531 Elf_Internal_Sym sym
;
532 unsigned long dest_index
;
533 unsigned long destshndx_index
;
536 struct bfd_link_needed_list
538 struct bfd_link_needed_list
*next
;
546 is_symbian
, /* Symbian OS. */
547 is_solaris
, /* Solaris. */
548 is_vxworks
, /* VxWorks. */
549 is_nacl
/* Native Client. */
552 /* ELF linker hash table. */
554 struct elf_link_hash_table
556 struct bfd_link_hash_table root
;
558 /* An identifier used to distinguish different target
559 specific extensions to this structure. */
560 enum elf_target_id hash_table_id
;
562 /* Whether we have created the special dynamic sections required
563 when linking against or generating a shared object. */
564 bfd_boolean dynamic_sections_created
;
566 /* Whether dynamic relocations are present. */
567 bfd_boolean dynamic_relocs
;
569 /* True if this target has relocatable executables, so needs dynamic
571 bfd_boolean is_relocatable_executable
;
573 /* The BFD used to hold special sections created by the linker.
574 This will be the first BFD found which requires these sections to
578 /* The value to use when initialising got.refcount/offset and
579 plt.refcount/offset in an elf_link_hash_entry. Set to zero when
580 the values are refcounts. Set to init_got_offset/init_plt_offset
581 in size_dynamic_sections when the values may be offsets. */
582 union gotplt_union init_got_refcount
;
583 union gotplt_union init_plt_refcount
;
585 /* The value to use for got.refcount/offset and plt.refcount/offset
586 when the values may be offsets. Normally (bfd_vma) -1. */
587 union gotplt_union init_got_offset
;
588 union gotplt_union init_plt_offset
;
590 /* The number of symbols found in the link which is intended for the
591 mandatory DT_SYMTAB tag (.dynsym section) in .dynamic section. */
592 bfd_size_type dynsymcount
;
593 bfd_size_type local_dynsymcount
;
595 /* The string table of dynamic symbols, which becomes the .dynstr
597 struct elf_strtab_hash
*dynstr
;
599 /* The number of symbol strings found in the link which must be put
600 into the .strtab section. */
601 bfd_size_type strtabcount
;
603 /* The array size of the symbol string table, which becomes the
605 bfd_size_type strtabsize
;
607 /* The array of strings, which becomes the .strtab section. */
608 struct elf_sym_strtab
*strtab
;
610 /* The number of buckets in the hash table in the .hash section.
611 This is based on the number of dynamic symbols. */
612 bfd_size_type bucketcount
;
614 /* A linked list of DT_NEEDED names found in dynamic objects
615 included in the link. */
616 struct bfd_link_needed_list
*needed
;
618 /* Sections in the output bfd that provides a section symbol
619 to be used by relocations emitted against local symbols.
620 Most targets will not use data_index_section. */
621 asection
*text_index_section
;
622 asection
*data_index_section
;
624 /* The _GLOBAL_OFFSET_TABLE_ symbol. */
625 struct elf_link_hash_entry
*hgot
;
627 /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */
628 struct elf_link_hash_entry
*hplt
;
630 /* The _DYNAMIC symbol. */
631 struct elf_link_hash_entry
*hdynamic
;
633 /* A pointer to information used to merge SEC_MERGE sections. */
636 /* Used to link stabs in sections. */
637 struct stab_info stab_info
;
639 /* Used by eh_frame code when editing .eh_frame. */
640 struct eh_frame_hdr_info eh_info
;
642 /* A linked list of local symbols to be added to .dynsym. */
643 struct elf_link_local_dynamic_entry
*dynlocal
;
645 /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
646 objects included in the link. */
647 struct bfd_link_needed_list
*runpath
;
649 /* Cached first output tls section and size of PT_TLS segment. */
651 bfd_size_type tls_size
; /* Bytes. */
653 /* The offset into splt of the PLT entry for the TLS descriptor
654 resolver. Special values are 0, if not necessary (or not found
655 to be necessary yet), and -1 if needed but not determined
659 /* The GOT offset for the lazy trampoline. Communicated to the
660 loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
661 indicates an offset is not allocated. */
664 /* Target OS for linker output. */
665 enum elf_target_os target_os
;
667 /* A linked list of dynamic BFD's loaded in the link. */
668 struct elf_link_loaded_list
*dyn_loaded
;
670 /* Short-cuts to get to dynamic linker sections. */
679 asection
*sreldynrelro
;
687 /* Look up an entry in an ELF linker hash table. */
689 #define elf_link_hash_lookup(table, string, create, copy, follow) \
690 ((struct elf_link_hash_entry *) \
691 bfd_link_hash_lookup (&(table)->root, (string), (create), \
694 /* Traverse an ELF linker hash table. */
696 #define elf_link_hash_traverse(table, func, info) \
697 (bfd_link_hash_traverse \
699 (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
702 /* Get the ELF linker hash table from a link_info structure. */
704 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
706 #define elf_hash_table_id(table) ((table) -> hash_table_id)
708 /* Returns TRUE if the hash table is a struct elf_link_hash_table. */
709 #define is_elf_hash_table(htab) \
710 (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
712 /* Used by bfd_sym_from_r_symndx to cache a small number of local
714 #define LOCAL_SYM_CACHE_SIZE 32
718 unsigned long indx
[LOCAL_SYM_CACHE_SIZE
];
719 Elf_Internal_Sym sym
[LOCAL_SYM_CACHE_SIZE
];
722 /* Constant information held for an ELF backend. */
724 struct elf_size_info
{
725 unsigned char sizeof_ehdr
, sizeof_phdr
, sizeof_shdr
;
726 unsigned char sizeof_rel
, sizeof_rela
, sizeof_sym
, sizeof_dyn
, sizeof_note
;
728 /* The size of entries in the .hash section. */
729 unsigned char sizeof_hash_entry
;
731 /* The number of internal relocations to allocate per external
733 unsigned char int_rels_per_ext_rel
;
734 /* We use some fixed size arrays. This should be large enough to
735 handle all back-ends. */
736 #define MAX_INT_RELS_PER_EXT_REL 3
738 unsigned char arch_size
, log_file_align
;
739 unsigned char elfclass
, ev_current
;
740 int (*write_out_phdrs
)
741 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
743 (*write_shdrs_and_ehdr
) (bfd
*);
744 bfd_boolean (*checksum_contents
)
745 (bfd
* , void (*) (const void *, size_t, void *), void *);
747 (bfd
*, asection
*, void *);
748 bfd_boolean (*swap_symbol_in
)
749 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
750 void (*swap_symbol_out
)
751 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
752 bfd_boolean (*slurp_reloc_table
)
753 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
754 long (*slurp_symbol_table
)
755 (bfd
*, asymbol
**, bfd_boolean
);
757 (bfd
*, const void *, Elf_Internal_Dyn
*);
759 (bfd
*, const Elf_Internal_Dyn
*, void *);
761 /* This function is called to swap in a REL relocation. If an
762 external relocation corresponds to more than one internal
763 relocation, then all relocations are swapped in at once. */
764 void (*swap_reloc_in
)
765 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
767 /* This function is called to swap out a REL relocation. */
768 void (*swap_reloc_out
)
769 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
771 /* This function is called to swap in a RELA relocation. If an
772 external relocation corresponds to more than one internal
773 relocation, then all relocations are swapped in at once. */
774 void (*swap_reloca_in
)
775 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
777 /* This function is called to swap out a RELA relocation. */
778 void (*swap_reloca_out
)
779 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
782 #define elf_symbol_from(ABFD,S) \
783 (((S)->the_bfd != NULL \
784 && (S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
785 && (S)->the_bfd->tdata.elf_obj_data != 0) \
786 ? (elf_symbol_type *) (S) \
789 enum elf_reloc_type_class
{
791 reloc_class_relative
,
797 struct elf_reloc_cookie
799 Elf_Internal_Rela
*rels
, *rel
, *relend
;
800 Elf_Internal_Sym
*locsyms
;
804 struct elf_link_hash_entry
**sym_hashes
;
806 bfd_boolean bad_symtab
;
809 /* The level of IRIX compatibility we're striving for. */
817 /* Mapping of ELF section names and types. */
818 struct bfd_elf_special_section
821 unsigned int prefix_length
;
822 /* 0 means name must match PREFIX exactly.
823 -1 means name must start with PREFIX followed by an arbitrary string.
824 -2 means name must match PREFIX exactly or consist of PREFIX followed
825 by a dot then anything.
826 > 0 means name must start with the first PREFIX_LENGTH chars of
827 PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */
828 signed int suffix_length
;
833 enum action_discarded
839 typedef asection
* (*elf_gc_mark_hook_fn
)
840 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
841 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
843 enum elf_property_kind
845 /* A new property. */
846 property_unknown
= 0,
847 /* A property ignored by backend. */
849 /* A corrupt property reported by backend. */
851 /* A property should be removed due to property merge. */
853 /* A property which is a number. */
857 typedef struct elf_property
859 unsigned int pr_type
;
860 unsigned int pr_datasz
;
863 /* For property_number, this is a number. */
865 /* Add a new one if elf_property_kind is updated. */
867 enum elf_property_kind pr_kind
;
870 typedef struct elf_property_list
872 struct elf_property_list
*next
;
873 struct elf_property property
;
876 struct bfd_elf_section_reloc_data
;
878 struct elf_backend_data
880 /* The architecture for this backend. */
881 enum bfd_architecture arch
;
883 /* An identifier used to distinguish different target specific
884 extensions to elf_obj_tdata and elf_link_hash_table structures. */
885 enum elf_target_id target_id
;
888 enum elf_target_os target_os
;
890 /* The ELF machine code (EM_xxxx) for this backend. */
891 int elf_machine_code
;
896 /* The maximum page size for this backend. */
899 /* The minimum page size for this backend. An input object will not be
900 considered page aligned unless its sections are correctly aligned for
901 pages at least this large. May be smaller than maxpagesize. */
904 /* The common page size for this backend. */
905 bfd_vma commonpagesize
;
907 /* The value of commonpagesize to use when -z relro for this backend. */
908 bfd_vma relropagesize
;
910 /* The BFD flags applied to sections created for dynamic linking. */
911 flagword dynamic_sec_flags
;
913 /* Architecture-specific data for this backend.
914 This is actually a pointer to some type like struct elf_ARCH_data. */
915 const void *arch_data
;
917 /* A function to translate an ELF RELA relocation to a BFD arelent
918 structure. Returns TRUE upon success, FALSE otherwise. */
919 bfd_boolean (*elf_info_to_howto
)
920 (bfd
*, arelent
*, Elf_Internal_Rela
*);
922 /* A function to translate an ELF REL relocation to a BFD arelent
923 structure. Returns TRUE upon success, FALSE otherwise. */
924 bfd_boolean (*elf_info_to_howto_rel
)
925 (bfd
*, arelent
*, Elf_Internal_Rela
*);
927 /* A function to determine whether a symbol is global when
928 partitioning the symbol table into local and global symbols.
929 This should be NULL for most targets, in which case the correct
930 thing will be done. MIPS ELF, at least on the Irix 5, has
931 special requirements. */
932 bfd_boolean (*elf_backend_sym_is_global
)
935 /* The remaining functions are hooks which are called only if they
938 /* A function to permit a backend specific check on whether a
939 particular BFD format is relevant for an object file, and to
940 permit the backend to set any global information it wishes. When
941 this is called elf_elfheader is set, but anything else should be
942 used with caution. If this returns FALSE, the check_format
943 routine will return a bfd_error_wrong_format error. */
944 bfd_boolean (*elf_backend_object_p
)
947 /* A function to do additional symbol processing when reading the
948 ELF symbol table. This is where any processor-specific special
949 section indices are handled. */
950 void (*elf_backend_symbol_processing
)
953 /* A function to do additional symbol processing after reading the
954 entire ELF symbol table. */
955 bfd_boolean (*elf_backend_symbol_table_processing
)
956 (bfd
*, elf_symbol_type
*, unsigned int);
958 /* A function to set the type of the info field. Processor-specific
959 types should be handled here. */
960 int (*elf_backend_get_symbol_type
)
961 (Elf_Internal_Sym
*, int);
963 /* A function to return the linker hash table entry of a symbol that
964 might be satisfied by an archive symbol. */
965 struct elf_link_hash_entry
* (*elf_backend_archive_symbol_lookup
)
966 (bfd
*, struct bfd_link_info
*, const char *);
968 /* Return true if local section symbols should have a non-null st_name.
969 NULL implies false. */
970 bfd_boolean (*elf_backend_name_local_section_symbols
)
973 /* A function to do additional processing on the ELF section header
974 just before writing it out. This is used to set the flags and
975 type fields for some sections, or to actually write out data for
977 bfd_boolean (*elf_backend_section_processing
)
978 (bfd
*, Elf_Internal_Shdr
*);
980 /* A function to handle unusual section types when creating BFD
981 sections from ELF sections. */
982 bfd_boolean (*elf_backend_section_from_shdr
)
983 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
985 /* A function to convert machine dependent ELF section header flags to
986 BFD internal section header flags. */
987 bfd_boolean (*elf_backend_section_flags
)
988 (const Elf_Internal_Shdr
*);
990 /* A function that returns a struct containing ELF section flags and
991 type for the given BFD section. */
992 const struct bfd_elf_special_section
* (*get_sec_type_attr
)
995 /* A function to handle unusual program segment types when creating BFD
996 sections from ELF program segments. */
997 bfd_boolean (*elf_backend_section_from_phdr
)
998 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
1000 /* A function to set up the ELF section header for a BFD section in
1001 preparation for writing it out. This is where the flags and type
1002 fields are set for unusual sections. */
1003 bfd_boolean (*elf_backend_fake_sections
)
1004 (bfd
*, Elf_Internal_Shdr
*, asection
*);
1006 /* A function to get the ELF section index for a BFD section. If
1007 this returns TRUE, the section was found. If it is a normal ELF
1008 section, *RETVAL should be left unchanged. If it is not a normal
1009 ELF section *RETVAL should be set to the SHN_xxxx index. */
1010 bfd_boolean (*elf_backend_section_from_bfd_section
)
1011 (bfd
*, asection
*, int *retval
);
1013 /* If this field is not NULL, it is called by the add_symbols phase
1014 of a link just before adding a symbol to the global linker hash
1015 table. It may modify any of the fields as it wishes. If *NAME
1016 is set to NULL, the symbol will be skipped rather than being
1017 added to the hash table. This function is responsible for
1018 handling all processor dependent symbol bindings and section
1019 indices, and must set at least *FLAGS and *SEC for each processor
1020 dependent case; failure to do so will cause a link error. */
1021 bfd_boolean (*elf_add_symbol_hook
)
1022 (bfd
*abfd
, struct bfd_link_info
*info
, Elf_Internal_Sym
*,
1023 const char **name
, flagword
*flags
, asection
**sec
, bfd_vma
*value
);
1025 /* If this field is not NULL, it is called by the elf_link_output_sym
1026 phase of a link for each symbol which will appear in the object file.
1027 On error, this function returns 0. 1 is returned when the symbol
1028 should be output, 2 is returned when the symbol should be discarded. */
1029 int (*elf_backend_link_output_symbol_hook
)
1030 (struct bfd_link_info
*info
, const char *, Elf_Internal_Sym
*,
1031 asection
*, struct elf_link_hash_entry
*);
1033 /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
1034 linker the first time it encounters a dynamic object in the link.
1035 This function must create any sections required for dynamic
1036 linking. The ABFD argument is a dynamic object. The .interp,
1037 .dynamic, .dynsym, .dynstr, and .hash functions have already been
1038 created, and this function may modify the section flags if
1039 desired. This function will normally create the .got and .plt
1040 sections, but different backends have different requirements. */
1041 bfd_boolean (*elf_backend_create_dynamic_sections
)
1042 (bfd
*abfd
, struct bfd_link_info
*info
);
1044 /* When creating a shared library, determine whether to omit the
1045 dynamic symbol for the section. */
1046 bfd_boolean (*elf_backend_omit_section_dynsym
)
1047 (bfd
*output_bfd
, struct bfd_link_info
*info
, asection
*osec
);
1049 /* Return TRUE if relocations of targets are compatible to the extent
1050 that CHECK_RELOCS will properly process them. PR 4424. */
1051 bfd_boolean (*relocs_compatible
) (const bfd_target
*, const bfd_target
*);
1053 /* The CHECK_RELOCS function is called by the add_symbols phase of
1054 the ELF backend linker. It is called once for each section with
1055 relocs of an object file, just after the symbols for the object
1056 file have been added to the global linker hash table. The
1057 function must look through the relocs and do any special handling
1058 required. This generally means allocating space in the global
1059 offset table, and perhaps allocating space for a reloc. The
1060 relocs are always passed as Rela structures; if the section
1061 actually uses Rel structures, the r_addend field will always be
1063 bfd_boolean (*check_relocs
)
1064 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
1065 const Elf_Internal_Rela
*relocs
);
1067 /* The CHECK_DIRECTIVES function is called once per input file by
1068 the add_symbols phase of the ELF backend linker. The function
1069 must inspect the bfd and create any additional symbols according
1070 to any custom directives in the bfd. */
1071 bfd_boolean (*check_directives
)
1072 (bfd
*abfd
, struct bfd_link_info
*info
);
1074 /* The NOTICE_AS_NEEDED function is called as the linker is about to
1075 handle an as-needed lib (ACT = notice_as_needed), and after the
1076 linker has decided to keep the lib (ACT = notice_needed) or when
1077 the lib is not needed (ACT = notice_not_needed). */
1078 bfd_boolean (*notice_as_needed
)
1079 (bfd
*abfd
, struct bfd_link_info
*info
, enum notice_asneeded_action act
);
1081 /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
1082 linker for every symbol which is defined by a dynamic object and
1083 referenced by a regular object. This is called after all the
1084 input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
1085 function has been called. The hash table entry should be
1086 bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
1087 defined in a section from a dynamic object. Dynamic object
1088 sections are not included in the final link, and this function is
1089 responsible for changing the value to something which the rest of
1090 the link can deal with. This will normally involve adding an
1091 entry to the .plt or .got or some such section, and setting the
1092 symbol to point to that. */
1093 bfd_boolean (*elf_backend_adjust_dynamic_symbol
)
1094 (struct bfd_link_info
*info
, struct elf_link_hash_entry
*h
);
1096 /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
1097 after all the linker input files have been seen but before the
1098 section sizes have been set. This is called after
1099 ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */
1100 bfd_boolean (*elf_backend_always_size_sections
)
1101 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1103 /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
1104 linker after all the linker input files have been seen but before
1105 the sections sizes have been set. This is called after
1106 ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
1107 It is only called when linking against a dynamic object. It must
1108 set the sizes of the dynamic sections, and may fill in their
1109 contents as well. The generic ELF linker can handle the .dynsym,
1110 .dynstr and .hash sections. This function must handle the
1111 .interp section and any sections created by the
1112 CREATE_DYNAMIC_SECTIONS entry point. */
1113 bfd_boolean (*elf_backend_size_dynamic_sections
)
1114 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1116 /* The STRIP_ZERO_SIZED_DYNAMIC_SECTIONS function is called by the
1117 ELF backend linker to strip zero-sized dynamic sections after
1118 the section sizes have been set. */
1119 bfd_boolean (*elf_backend_strip_zero_sized_dynamic_sections
)
1120 (struct bfd_link_info
*info
);
1122 /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections
1123 we keep to use as a base for relocs and symbols. */
1124 void (*elf_backend_init_index_section
)
1125 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1127 /* The RELOCATE_SECTION function is called by the ELF backend linker
1128 to handle the relocations for a section.
1130 The relocs are always passed as Rela structures; if the section
1131 actually uses Rel structures, the r_addend field will always be
1134 This function is responsible for adjust the section contents as
1135 necessary, and (if using Rela relocs and generating a
1136 relocatable output file) adjusting the reloc addend as
1139 This function does not have to worry about setting the reloc
1140 address or the reloc symbol index.
1142 LOCAL_SYMS is a pointer to the swapped in local symbols.
1144 LOCAL_SECTIONS is an array giving the section in the input file
1145 corresponding to the st_shndx field of each local symbol.
1147 The global hash table entry for the global symbols can be found
1148 via elf_sym_hashes (input_bfd).
1150 When generating relocatable output, this function must handle
1151 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1152 going to be the section symbol corresponding to the output
1153 section, which means that the addend must be adjusted
1156 Returns FALSE on error, TRUE on success, 2 if successful and
1157 relocations should be written for this section. */
1158 int (*elf_backend_relocate_section
)
1159 (bfd
*output_bfd
, struct bfd_link_info
*info
, bfd
*input_bfd
,
1160 asection
*input_section
, bfd_byte
*contents
, Elf_Internal_Rela
*relocs
,
1161 Elf_Internal_Sym
*local_syms
, asection
**local_sections
);
1163 /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
1164 linker just before it writes a symbol out to the .dynsym section.
1165 The processor backend may make any required adjustment to the
1166 symbol. It may also take the opportunity to set contents of the
1167 dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
1168 all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
1169 on those symbols which are defined by a dynamic object. */
1170 bfd_boolean (*elf_backend_finish_dynamic_symbol
)
1171 (bfd
*output_bfd
, struct bfd_link_info
*info
,
1172 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*sym
);
1174 /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
1175 linker just before it writes all the dynamic sections out to the
1176 output file. The FINISH_DYNAMIC_SYMBOL will have been called on
1177 all dynamic symbols. */
1178 bfd_boolean (*elf_backend_finish_dynamic_sections
)
1179 (bfd
*output_bfd
, struct bfd_link_info
*info
);
1181 /* A function to do any beginning processing needed for the ELF file
1182 before building the ELF headers and computing file positions. */
1183 void (*elf_backend_begin_write_processing
)
1184 (bfd
*, struct bfd_link_info
*);
1186 /* A function to do any final processing needed for the ELF file
1187 before writing it out. */
1188 bfd_boolean (*elf_backend_final_write_processing
)
1191 /* This function is called by get_program_header_size. It should
1192 return the number of additional program segments which this BFD
1193 will need. It should return -1 on error. */
1194 int (*elf_backend_additional_program_headers
)
1195 (bfd
*, struct bfd_link_info
*);
1197 /* This function is called to modify an existing segment map in a
1198 backend specific fashion. */
1199 bfd_boolean (*elf_backend_modify_segment_map
)
1200 (bfd
*, struct bfd_link_info
*);
1202 /* This function is called to modify program headers just before
1203 they are written. */
1204 bfd_boolean (*elf_backend_modify_headers
)
1205 (bfd
*, struct bfd_link_info
*);
1207 /* This function is called to see if the PHDR header should be
1208 checked for validity. */
1209 bfd_boolean (*elf_backend_allow_non_load_phdr
)
1210 (bfd
*, const Elf_Internal_Phdr
*, unsigned);
1212 /* This function is called before section garbage collection to
1213 mark entry symbol sections. */
1215 (struct bfd_link_info
*);
1217 /* This function is called during section garbage collection to
1218 mark sections that define global symbols. */
1219 bfd_boolean (*gc_mark_dynamic_ref
)
1220 (struct elf_link_hash_entry
*, void *);
1222 /* This function is called during section gc to discover the section a
1223 particular relocation refers to. */
1224 elf_gc_mark_hook_fn gc_mark_hook
;
1226 /* This function, if defined, is called after the first gc marking pass
1227 to allow the backend to mark additional sections. */
1228 bfd_boolean (*gc_mark_extra_sections
)
1229 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
1231 /* This function is called to initialise ELF file header info.
1232 Customised versions can modify things like the OS and ABI version. */
1233 bfd_boolean (*elf_backend_init_file_header
)
1234 (bfd
*, struct bfd_link_info
*);
1236 /* This function, if defined, prints a symbol to file and returns the
1237 name of the symbol to be printed. It should return NULL to fall
1238 back to default symbol printing. */
1239 const char *(*elf_backend_print_symbol_all
)
1240 (bfd
*, void *, asymbol
*);
1242 /* This function, if defined, is called after all local symbols and
1243 global symbols converted to locals are emitted into the symtab
1244 section. It allows the backend to emit special local symbols
1245 not handled in the hash table. */
1246 bfd_boolean (*elf_backend_output_arch_local_syms
)
1247 (bfd
*, struct bfd_link_info
*, void *,
1248 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1249 struct elf_link_hash_entry
*));
1251 /* This function, if defined, is called after all symbols are emitted
1252 into the symtab section. It allows the backend to emit special
1253 global symbols not handled in the hash table. */
1254 bfd_boolean (*elf_backend_output_arch_syms
)
1255 (bfd
*, struct bfd_link_info
*, void *,
1256 bfd_boolean (*) (void *, const char *, Elf_Internal_Sym
*, asection
*,
1257 struct elf_link_hash_entry
*));
1259 /* Filter what symbols of the output file to include in the import
1260 library if one is created. */
1261 unsigned int (*elf_backend_filter_implib_symbols
)
1262 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
1264 /* Copy any information related to dynamic linking from a pre-existing
1265 symbol to a newly created symbol. Also called to copy flags and
1266 other back-end info to a weakdef, in which case the symbol is not
1267 newly created and plt/got refcounts and dynamic indices should not
1269 void (*elf_backend_copy_indirect_symbol
)
1270 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
1271 struct elf_link_hash_entry
*);
1273 /* Modify any information related to dynamic linking such that the
1274 symbol is not exported. */
1275 void (*elf_backend_hide_symbol
)
1276 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
1278 /* A function to do additional symbol fixup, called by
1279 _bfd_elf_fix_symbol_flags. */
1280 bfd_boolean (*elf_backend_fixup_symbol
)
1281 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
1283 /* Merge the backend specific symbol attribute. */
1284 void (*elf_backend_merge_symbol_attribute
)
1285 (struct elf_link_hash_entry
*, const Elf_Internal_Sym
*, bfd_boolean
,
1288 /* This function, if defined, will return a string containing the
1289 name of a target-specific dynamic tag. */
1290 char *(*elf_backend_get_target_dtag
)
1293 /* Decide whether an undefined symbol is special and can be ignored.
1294 This is the case for OPTIONAL symbols on IRIX. */
1295 bfd_boolean (*elf_backend_ignore_undef_symbol
)
1296 (struct elf_link_hash_entry
*);
1298 /* Emit relocations. Overrides default routine for emitting relocs,
1299 except during a relocatable link, or if all relocs are being emitted. */
1300 bfd_boolean (*elf_backend_emit_relocs
)
1301 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
1302 struct elf_link_hash_entry
**);
1304 /* Update relocations. It is allowed to change the number and the order.
1305 In such a case hashes should be invalidated. */
1306 void (*elf_backend_update_relocs
)
1307 (asection
*, struct bfd_elf_section_reloc_data
*);
1309 /* Count relocations. Not called for relocatable links
1310 or if all relocs are being preserved in the output. */
1311 unsigned int (*elf_backend_count_relocs
)
1312 (struct bfd_link_info
*, asection
*);
1314 /* Count additionals relocations. Called for relocatable links if
1315 additional relocations needs to be created. */
1316 unsigned int (*elf_backend_count_additional_relocs
)
1319 /* Say whether to sort relocs output by ld -r and ld --emit-relocs,
1320 by r_offset. If NULL, default to true. */
1321 bfd_boolean (*sort_relocs_p
)
1324 /* This function, if defined, is called when an NT_PRSTATUS note is found
1326 bfd_boolean (*elf_backend_grok_prstatus
)
1327 (bfd
*, Elf_Internal_Note
*);
1329 /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
1330 note is found in a core file. */
1331 bfd_boolean (*elf_backend_grok_psinfo
)
1332 (bfd
*, Elf_Internal_Note
*);
1334 /* This function, if defined, is called when a "FreeBSD" NT_PRSTATUS
1335 note is found in a core file. */
1336 bfd_boolean (*elf_backend_grok_freebsd_prstatus
)
1337 (bfd
*, Elf_Internal_Note
*);
1339 /* This function, if defined, is called to write a note to a corefile. */
1340 char *(*elf_backend_write_core_note
)
1341 (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...);
1343 /* This function, if defined, is called to convert target-specific
1344 section flag names into hex values. */
1345 flagword (*elf_backend_lookup_section_flags_hook
)
1348 /* This function returns class of a reloc type. */
1349 enum elf_reloc_type_class (*elf_backend_reloc_type_class
)
1350 (const struct bfd_link_info
*, const asection
*, const Elf_Internal_Rela
*);
1352 /* This function, if defined, removes information about discarded functions
1353 from other sections which mention them. */
1354 bfd_boolean (*elf_backend_discard_info
)
1355 (bfd
*, struct elf_reloc_cookie
*, struct bfd_link_info
*);
1357 /* This function, if defined, signals that the function above has removed
1358 the discarded relocations for this section. */
1359 bfd_boolean (*elf_backend_ignore_discarded_relocs
)
1362 /* What to do when ld finds relocations against symbols defined in
1363 discarded sections. */
1364 unsigned int (*action_discarded
)
1367 /* This function returns the width of FDE pointers in bytes, or 0 if
1368 that can't be determined for some reason. The default definition
1369 goes by the bfd's EI_CLASS. */
1370 unsigned int (*elf_backend_eh_frame_address_size
)
1371 (bfd
*, const asection
*);
1373 /* These functions tell elf-eh-frame whether to attempt to turn
1374 absolute or lsda encodings into pc-relative ones. The default
1375 definition enables these transformations. */
1376 bfd_boolean (*elf_backend_can_make_relative_eh_frame
)
1377 (bfd
*, struct bfd_link_info
*, asection
*);
1378 bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame
)
1379 (bfd
*, struct bfd_link_info
*, asection
*);
1381 /* This function returns an encoding after computing the encoded
1382 value (and storing it in ENCODED) for the given OFFSET into OSEC,
1383 to be stored in at LOC_OFFSET into the LOC_SEC input section.
1384 The default definition chooses a 32-bit PC-relative encoding. */
1385 bfd_byte (*elf_backend_encode_eh_address
)
1386 (bfd
*abfd
, struct bfd_link_info
*info
,
1387 asection
*osec
, bfd_vma offset
,
1388 asection
*loc_sec
, bfd_vma loc_offset
,
1391 /* This function, if defined, may write out the given section.
1392 Returns TRUE if it did so and FALSE if the caller should. */
1393 bfd_boolean (*elf_backend_write_section
)
1394 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
1396 /* The level of IRIX compatibility we're striving for.
1397 MIPS ELF specific function. */
1398 irix_compat_t (*elf_backend_mips_irix_compat
)
1401 reloc_howto_type
*(*elf_backend_mips_rtype_to_howto
)
1402 (bfd
*, unsigned int, bfd_boolean
);
1404 /* The swapping table to use when dealing with ECOFF information.
1405 Used for the MIPS ELF .mdebug section. */
1406 const struct ecoff_debug_swap
*elf_backend_ecoff_debug_swap
;
1408 /* This function implements `bfd_elf_bfd_from_remote_memory';
1409 see elf.c, elfcode.h. */
1410 bfd
*(*elf_backend_bfd_from_remote_memory
)
1411 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
1412 int (*target_read_memory
) (bfd_vma vma
, bfd_byte
*myaddr
,
1413 bfd_size_type len
));
1415 bfd_boolean (*elf_backend_core_find_build_id
) (bfd
*, bfd_vma
);
1417 /* This function is used by `_bfd_elf_get_synthetic_symtab';
1419 bfd_vma (*plt_sym_val
) (bfd_vma
, const asection
*, const arelent
*);
1421 /* Is symbol defined in common section? */
1422 bfd_boolean (*common_definition
) (Elf_Internal_Sym
*);
1424 /* Return a common section index for section. */
1425 unsigned int (*common_section_index
) (asection
*);
1427 /* Return a common section for section. */
1428 asection
*(*common_section
) (asection
*);
1430 /* Return TRUE if we can merge 2 definitions. */
1431 bfd_boolean (*merge_symbol
) (struct elf_link_hash_entry
*,
1432 const Elf_Internal_Sym
*, asection
**,
1433 bfd_boolean
, bfd_boolean
,
1434 bfd
*, const asection
*);
1436 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
1437 bfd_boolean (*elf_hash_symbol
) (struct elf_link_hash_entry
*);
1439 /* If non-NULL, called to register the location of XLAT_LOC within
1440 .MIPS.xhash at which real final dynindx for H will be written.
1441 If XLAT_LOC is zero, the symbol is not included in
1442 .MIPS.xhash and no dynindx will be written. */
1443 void (*record_xhash_symbol
)
1444 (struct elf_link_hash_entry
*h
, bfd_vma xlat_loc
);
1446 /* Return TRUE if type is a function symbol type. */
1447 bfd_boolean (*is_function_type
) (unsigned int type
);
1449 /* If the ELF symbol SYM might be a function in SEC, return the
1450 function size and set *CODE_OFF to the function's entry point,
1451 otherwise return zero. */
1452 bfd_size_type (*maybe_function_sym
) (const asymbol
*sym
, asection
*sec
,
1455 /* Given NAME, the name of a relocation section stripped of its
1456 .rel/.rela prefix, return the section in ABFD to which the
1457 relocations apply. */
1458 asection
*(*get_reloc_section
) (bfd
*abfd
, const char *name
);
1460 /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
1461 has a type >= SHT_LOOS. Returns TRUE if the fields were initialised,
1462 FALSE otherwise. Can be called multiple times for a given section,
1463 until it returns TRUE. Most of the times it is called ISECTION will be
1464 set to an input section that might be associated with the output section.
1465 The last time that it is called, ISECTION will be set to NULL. */
1466 bfd_boolean (*elf_backend_copy_special_section_fields
)
1467 (const bfd
*ibfd
, bfd
*obfd
, const Elf_Internal_Shdr
*isection
,
1468 Elf_Internal_Shdr
*osection
);
1470 /* Used to handle bad SHF_LINK_ORDER input. */
1471 void (*link_order_error_handler
) (const char *, ...);
1473 /* Name of the PLT relocation section. */
1474 const char *relplt_name
;
1476 /* Alternate EM_xxxx machine codes for this backend. */
1477 int elf_machine_alt1
;
1478 int elf_machine_alt2
;
1480 const struct elf_size_info
*s
;
1482 /* An array of target specific special sections. */
1483 const struct bfd_elf_special_section
*special_sections
;
1485 /* The size in bytes of the header for the GOT. This includes the
1486 so-called reserved entries on some systems. */
1487 bfd_vma got_header_size
;
1489 /* The size of the GOT entry for the symbol pointed to by H if non-NULL,
1490 otherwise by the local symbol with index SYMNDX in IBFD. */
1491 bfd_vma (*got_elt_size
) (bfd
*, struct bfd_link_info
*,
1492 struct elf_link_hash_entry
*h
,
1493 bfd
*ibfd
, unsigned long symndx
);
1495 /* The vendor name to use for a processor-standard attributes section. */
1496 const char *obj_attrs_vendor
;
1498 /* The section name to use for a processor-standard attributes section. */
1499 const char *obj_attrs_section
;
1501 /* Return 1, 2 or 3 to indicate what type of arguments a
1502 processor-specific tag takes. */
1503 int (*obj_attrs_arg_type
) (int);
1505 /* The section type to use for an attributes section. */
1506 unsigned int obj_attrs_section_type
;
1508 /* This function determines the order in which any attributes are
1509 written. It must be defined for input in the range
1510 LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range
1511 is used in order to make unity easy). The returned value is the
1512 actual tag number to place in the input position. */
1513 int (*obj_attrs_order
) (int);
1515 /* Handle merging unknown attributes; either warn and return TRUE,
1516 or give an error and return FALSE. */
1517 bfd_boolean (*obj_attrs_handle_unknown
) (bfd
*, int);
1519 /* Parse GNU properties. Return the property kind. If the property
1520 is corrupt, issue an error message and return property_corrupt. */
1521 enum elf_property_kind (*parse_gnu_properties
) (bfd
*, unsigned int,
1525 /* Merge GNU properties. Return TRUE if property is updated. */
1526 bfd_boolean (*merge_gnu_properties
) (struct bfd_link_info
*, bfd
*, bfd
*,
1527 elf_property
*, elf_property
*);
1529 /* Set up GNU properties. */
1530 bfd
*(*setup_gnu_properties
) (struct bfd_link_info
*);
1532 /* Fix up GNU properties. */
1533 void (*fixup_gnu_properties
) (struct bfd_link_info
*,
1534 elf_property_list
**);
1536 /* Encoding used for compact EH tables. */
1537 int (*compact_eh_encoding
) (struct bfd_link_info
*);
1539 /* Opcode representing no unwind. */
1540 int (*cant_unwind_opcode
) (struct bfd_link_info
*);
1542 /* Called when emitting an ELF symbol whoes input version had an
1543 ST_SHNDX field set to a value in the range SHN_LOPROC..SHN_HIOS.
1544 Returns the value to be installed in the ST_SHNDX field of the
1545 emitted symbol. If not defined, the value is left unchanged. */
1546 unsigned int (*symbol_section_index
) (bfd
*, elf_symbol_type
*);
1548 /* Called when a section has extra reloc sections. */
1549 bfd_boolean (*init_secondary_reloc_section
) (bfd
*, Elf_Internal_Shdr
*,
1550 const char *, unsigned int);
1552 /* Called when after loading the normal relocs for a section. */
1553 bfd_boolean (*slurp_secondary_relocs
) (bfd
*, asection
*, asymbol
**);
1555 /* Called after writing the normal relocs for a section. */
1556 bfd_boolean (*write_secondary_relocs
) (bfd
*, asection
*);
1558 /* This is non-zero if static TLS segments require a special alignment. */
1559 unsigned static_tls_alignment
;
1561 /* Alignment for the PT_GNU_STACK segment. */
1562 unsigned stack_align
;
1564 /* Flag bits to assign to a section of type SHT_STRTAB. */
1565 unsigned long elf_strtab_flags
;
1567 /* This is TRUE if the linker should act like collect and gather
1568 global constructors and destructors by name. This is TRUE for
1569 MIPS ELF because the Irix 5 tools can not handle the .init
1571 unsigned collect
: 1;
1573 /* This is TRUE if the linker should ignore changes to the type of a
1574 symbol. This is TRUE for MIPS ELF because some Irix 5 objects
1575 record undefined functions as STT_OBJECT although the definitions
1577 unsigned type_change_ok
: 1;
1579 /* Whether the backend may use REL relocations. (Some backends use
1580 both REL and RELA relocations, and this flag is set for those
1582 unsigned may_use_rel_p
: 1;
1584 /* Whether the backend may use RELA relocations. (Some backends use
1585 both REL and RELA relocations, and this flag is set for those
1587 unsigned may_use_rela_p
: 1;
1589 /* Whether the default relocation type is RELA. If a backend with
1590 this flag set wants REL relocations for a particular section,
1591 it must note that explicitly. Similarly, if this flag is clear,
1592 and the backend wants RELA relocations for a particular
1594 unsigned default_use_rela_p
: 1;
1596 /* True if PLT and copy relocations should be RELA by default. */
1597 unsigned rela_plts_and_copies_p
: 1;
1599 /* Set if RELA relocations for a relocatable link can be handled by
1600 generic code. Backends that set this flag need do nothing in the
1601 backend relocate_section routine for relocatable linking. */
1602 unsigned rela_normal
: 1;
1604 /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT
1606 unsigned dtrel_excludes_plt
: 1;
1608 /* TRUE if addresses "naturally" sign extend. This is used when
1609 swapping in from Elf32 when BFD64. */
1610 unsigned sign_extend_vma
: 1;
1612 unsigned want_got_plt
: 1;
1613 unsigned plt_readonly
: 1;
1614 unsigned want_plt_sym
: 1;
1615 unsigned plt_not_loaded
: 1;
1616 unsigned plt_alignment
: 4;
1617 unsigned can_gc_sections
: 1;
1618 unsigned can_refcount
: 1;
1619 unsigned want_got_sym
: 1;
1620 unsigned want_dynbss
: 1;
1621 unsigned want_dynrelro
: 1;
1623 /* Targets which do not support physical addressing often require
1624 that the p_paddr field in the section header to be set to zero.
1625 This field indicates whether this behavior is required. */
1626 unsigned want_p_paddr_set_to_zero
: 1;
1628 /* Target has broken hardware and/or kernel that requires pages not
1629 to be mapped twice with different permissions. */
1630 unsigned no_page_alias
: 1;
1632 /* True if an object file lacking a .note.GNU-stack section
1633 should be assumed to be requesting exec stack. At least one
1634 other file in the link needs to have a .note.GNU-stack section
1635 for a PT_GNU_STACK segment to be created. */
1636 unsigned default_execstack
: 1;
1638 /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize
1639 in length rather than sec->size in length, if sec->rawsize is
1640 non-zero and smaller than sec->size. */
1641 unsigned caches_rawsize
: 1;
1643 /* Address of protected data defined in the shared library may be
1644 external, i.e., due to copy relocation. */
1645 unsigned extern_protected_data
: 1;
1647 /* True if `_bfd_elf_link_renumber_dynsyms' must be called even for
1649 unsigned always_renumber_dynsyms
: 1;
1651 /* True if the 32-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1652 members use a 16-bit data type. */
1653 unsigned linux_prpsinfo32_ugid16
: 1;
1655 /* True if the 64-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid'
1656 members use a 16-bit data type. */
1657 unsigned linux_prpsinfo64_ugid16
: 1;
1660 /* Information about reloc sections associated with a bfd_elf_section_data
1662 struct bfd_elf_section_reloc_data
1664 /* The ELF header for the reloc section associated with this
1666 Elf_Internal_Shdr
*hdr
;
1667 /* The number of relocations currently assigned to HDR. */
1669 /* The ELF section number of the reloc section. Only used for an
1672 /* Used by the backend linker to store the symbol hash table entries
1673 associated with relocs against global symbols. */
1674 struct elf_link_hash_entry
**hashes
;
1677 /* Information stored for each BFD section in an ELF file. This
1678 structure is allocated by elf_new_section_hook. */
1680 struct bfd_elf_section_data
1682 /* The ELF header for this section. */
1683 Elf_Internal_Shdr this_hdr
;
1685 /* INPUT_SECTION_FLAGS if specified in the linker script. */
1686 struct flag_info
*section_flag_info
;
1688 /* Information about the REL and RELA reloc sections associated
1689 with this section, if any. */
1690 struct bfd_elf_section_reloc_data rel
, rela
;
1692 /* The ELF section number of this section. */
1695 /* Used by the backend linker when generating a shared library to
1696 record the dynamic symbol index for a section symbol
1697 corresponding to this section. A value of 0 means that there is
1698 no dynamic symbol for this section. */
1701 /* A pointer to the linked-to section for SHF_LINK_ORDER. */
1702 asection
*linked_to
;
1704 /* A pointer to the swapped relocs. If the section uses REL relocs,
1705 rather than RELA, all the r_addend fields will be zero. This
1706 pointer may be NULL. It is used by the backend linker. */
1707 Elf_Internal_Rela
*relocs
;
1709 /* A pointer to a linked list tracking dynamic relocs copied for
1713 /* A pointer to the bfd section used for dynamic relocs. */
1717 /* Group name, if this section is a member of a group. */
1720 /* Group signature sym, if this is the SHT_GROUP section. */
1721 struct bfd_symbol
*id
;
1724 /* For a member of a group, points to the SHT_GROUP section.
1725 NULL for the SHT_GROUP section itself and non-group sections. */
1726 asection
*sec_group
;
1728 /* A linked list of member sections in the group. Circular when used by
1729 the linker. For the SHT_GROUP section, points at first member. */
1730 asection
*next_in_group
;
1732 /* The FDEs associated with this section. The u.fde.next_in_section
1733 field acts as a chain pointer. */
1734 struct eh_cie_fde
*fde_list
;
1736 /* Link from a text section to its .eh_frame_entry section. */
1737 asection
*eh_frame_entry
;
1739 /* A pointer used for various section optimizations. */
1743 #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
1744 #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
1745 #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type)
1746 #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
1747 #define elf_section_info(sec) (elf_section_data(sec)->this_hdr.sh_info)
1748 #define elf_group_name(sec) (elf_section_data(sec)->group.name)
1749 #define elf_group_id(sec) (elf_section_data(sec)->group.id)
1750 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
1751 #define elf_fde_list(sec) (elf_section_data(sec)->fde_list)
1752 #define elf_sec_group(sec) (elf_section_data(sec)->sec_group)
1753 #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry)
1755 #define xvec_get_elf_backend_data(xvec) \
1756 ((const struct elf_backend_data *) (xvec)->backend_data)
1758 #define get_elf_backend_data(abfd) \
1759 xvec_get_elf_backend_data ((abfd)->xvec)
1761 /* The least object attributes (within an attributes subsection) known
1762 for any target. Some code assumes that the value 0 is not used and
1763 the field for that attribute can instead be used as a marker to
1764 indicate that attributes have been initialized. */
1765 #define LEAST_KNOWN_OBJ_ATTRIBUTE 2
1767 /* The maximum number of known object attributes for any target. */
1768 #define NUM_KNOWN_OBJ_ATTRIBUTES 71
1770 /* The value of an object attribute. The type indicates whether the attribute
1771 holds and integer, a string, or both. It can also indicate that there can
1772 be no default (i.e. all values must be written to file, even zero), or
1773 that the value is in error and should not be written to file. */
1775 typedef struct obj_attribute
1777 #define ATTR_TYPE_FLAG_INT_VAL (1 << 0)
1778 #define ATTR_TYPE_FLAG_STR_VAL (1 << 1)
1779 #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
1780 #define ATTR_TYPE_FLAG_ERROR (1 << 3)
1782 #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
1783 #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
1784 #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
1785 #define ATTR_TYPE_HAS_ERROR(TYPE) ((TYPE) & ATTR_TYPE_FLAG_ERROR)
1792 typedef struct obj_attribute_list
1794 struct obj_attribute_list
*next
;
1797 } obj_attribute_list
;
1799 /* Object attributes may either be defined by the processor ABI, index
1800 OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
1801 (and possibly also processor-specific), index OBJ_ATTR_GNU. */
1802 #define OBJ_ATTR_PROC 0
1803 #define OBJ_ATTR_GNU 1
1804 #define OBJ_ATTR_FIRST OBJ_ATTR_PROC
1805 #define OBJ_ATTR_LAST OBJ_ATTR_GNU
1807 /* The following object attribute tags are taken as generic, for all
1808 targets and for "gnu" where there is no target standard. */
1815 Tag_compatibility
= 32
1818 /* The following struct stores information about every SystemTap section
1819 found in the object file. */
1822 struct sdt_note
*next
;
1827 /* tdata information grabbed from an elf core file. */
1828 struct core_elf_obj_tdata
1837 /* Extra tdata information held for output ELF BFDs. */
1838 struct output_elf_obj_tdata
1840 struct elf_segment_map
*seg_map
;
1841 struct elf_strtab_hash
*strtab_ptr
;
1843 /* STT_SECTION symbols for each section */
1844 asymbol
**section_syms
;
1846 /* Used to determine if PT_GNU_EH_FRAME segment header should be
1848 asection
*eh_frame_hdr
;
1850 /* NT_GNU_BUILD_ID note type info. */
1853 bfd_boolean (*after_write_object_contents
) (bfd
*);
1858 /* Records the result of `get_program_header_size'. */
1859 bfd_size_type program_header_size
;
1861 /* Used when laying out sections. */
1862 file_ptr next_file_pos
;
1864 int num_section_syms
;
1865 unsigned int shstrtab_section
, strtab_section
;
1867 /* Segment flags for the PT_GNU_STACK segment. */
1868 unsigned int stack_flags
;
1870 /* Used to determine if the e_flags field has been initialized */
1871 bfd_boolean flags_init
;
1874 /* Indicate if the bfd contains SHF_GNU_MBIND sections or symbols that
1875 have the STT_GNU_IFUNC symbol type or STB_GNU_UNIQUE binding. Used
1876 to set the osabi field in the ELF header structure. */
1879 elf_gnu_osabi_mbind
= 1 << 0,
1880 elf_gnu_osabi_ifunc
= 1 << 1,
1881 elf_gnu_osabi_unique
= 1 << 2,
1884 typedef struct elf_section_list
1886 Elf_Internal_Shdr hdr
;
1888 struct elf_section_list
* next
;
1891 enum dynamic_lib_link_class
{
1895 DYN_NO_ADD_NEEDED
= 4,
1899 /* Some private data is stashed away for future use using the tdata pointer
1900 in the bfd structure. */
1902 struct elf_obj_tdata
1904 Elf_Internal_Ehdr elf_header
[1]; /* Actual data, but ref like ptr */
1905 Elf_Internal_Shdr
**elf_sect_ptr
;
1906 Elf_Internal_Phdr
*phdr
;
1907 Elf_Internal_Shdr symtab_hdr
;
1908 Elf_Internal_Shdr shstrtab_hdr
;
1909 Elf_Internal_Shdr strtab_hdr
;
1910 Elf_Internal_Shdr dynsymtab_hdr
;
1911 Elf_Internal_Shdr dynstrtab_hdr
;
1912 Elf_Internal_Shdr dynversym_hdr
;
1913 Elf_Internal_Shdr dynverref_hdr
;
1914 Elf_Internal_Shdr dynverdef_hdr
;
1915 elf_section_list
* symtab_shndx_list
;
1916 bfd_vma gp
; /* The gp value */
1917 unsigned int gp_size
; /* The gp size */
1918 unsigned int num_elf_sections
; /* elf_sect_ptr size */
1920 /* A mapping from external symbols to entries in the linker hash
1921 table, used when linking. This is indexed by the symbol index
1922 minus the sh_info field of the symbol table header. */
1923 struct elf_link_hash_entry
**sym_hashes
;
1925 /* Track usage and final offsets of GOT entries for local symbols.
1926 This array is indexed by symbol index. Elements are used
1927 identically to "got" in struct elf_link_hash_entry. */
1930 bfd_signed_vma
*refcounts
;
1932 struct got_entry
**ents
;
1935 /* The linker ELF emulation code needs to let the backend ELF linker
1936 know what filename should be used for a dynamic object if the
1937 dynamic object is found using a search. The emulation code then
1938 sometimes needs to know what name was actually used. Until the
1939 file has been added to the linker symbol table, this field holds
1940 the name the linker wants. After it has been added, it holds the
1941 name actually used, which will be the DT_SONAME entry if there is
1943 const char *dt_name
;
1945 /* The linker emulation needs to know what audit libs
1946 are used by a dynamic object. */
1947 const char *dt_audit
;
1949 /* Used by find_nearest_line entry point. */
1952 /* A place to stash dwarf1 info for this bfd. */
1953 struct dwarf1_debug
*dwarf1_find_line_info
;
1955 /* A place to stash dwarf2 info for this bfd. */
1956 void *dwarf2_find_line_info
;
1958 /* Stash away info for yet another find line/function variant. */
1959 void *elf_find_function_cache
;
1961 /* Number of symbol version definitions we are about to emit. */
1962 unsigned int cverdefs
;
1964 /* Number of symbol version references we are about to emit. */
1965 unsigned int cverrefs
;
1967 /* Symbol version definitions in external objects. */
1968 Elf_Internal_Verdef
*verdef
;
1970 /* Symbol version references to external objects. */
1971 Elf_Internal_Verneed
*verref
;
1973 /* A pointer to the .eh_frame section. */
1974 asection
*eh_frame_section
;
1976 /* Symbol buffer. */
1979 /* List of GNU properties. Will be updated by setup_gnu_properties
1980 after all input GNU properties are merged for output. */
1981 elf_property_list
*properties
;
1983 obj_attribute known_obj_attributes
[2][NUM_KNOWN_OBJ_ATTRIBUTES
];
1984 obj_attribute_list
*other_obj_attributes
[2];
1986 /* Linked-list containing information about every Systemtap section
1987 found in the object file. Each section corresponds to one entry
1989 struct sdt_note
*sdt_note_head
;
1991 Elf_Internal_Shdr
**group_sect_ptr
;
1992 unsigned int num_group
;
1994 /* Index into group_sect_ptr, updated by setup_group when finding a
1995 section's group. Used to optimize subsequent group searches. */
1996 unsigned int group_search_offset
;
1998 unsigned int symtab_section
, dynsymtab_section
;
1999 unsigned int dynversym_section
, dynverdef_section
, dynverref_section
;
2001 /* An identifier used to distinguish different target
2002 specific extensions to this structure. */
2003 ENUM_BITFIELD (elf_target_id
) object_id
: 6;
2005 /* Whether a dyanmic object was specified normally on the linker
2006 command line, or was specified when --as-needed was in effect,
2007 or was found via a DT_NEEDED entry. */
2008 ENUM_BITFIELD (dynamic_lib_link_class
) dyn_lib_class
: 4;
2010 /* Whether the bfd uses OS specific bits that require ELFOSABI_GNU. */
2011 ENUM_BITFIELD (elf_gnu_osabi
) has_gnu_osabi
: 3;
2013 /* Whether if the bfd contains the GNU_PROPERTY_NO_COPY_ON_PROTECTED
2015 unsigned int has_no_copy_on_protected
: 1;
2017 /* Irix 5 often screws up the symbol table, sorting local symbols
2018 after global symbols. This flag is set if the symbol table in
2019 this BFD appears to be screwed up. If it is, we ignore the
2020 sh_info field in the symbol table header, and always read all the
2022 unsigned int bad_symtab
: 1;
2024 /* Information grabbed from an elf core file. */
2025 struct core_elf_obj_tdata
*core
;
2027 /* More information held for output ELF BFDs. */
2028 struct output_elf_obj_tdata
*o
;
2031 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
2033 #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id)
2034 #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size)
2035 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
2036 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
2037 #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections)
2038 #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map)
2039 #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos)
2040 #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr)
2041 #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags)
2042 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr)
2043 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
2044 #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list)
2045 #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section)
2046 #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section)
2047 #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr)
2048 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
2049 #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
2050 #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
2051 #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
2052 #define elf_eh_frame_section(bfd) \
2053 (elf_tdata(bfd) -> eh_frame_section)
2054 #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms)
2055 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms)
2056 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
2057 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
2058 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
2059 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
2060 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
2061 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
2062 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
2063 #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
2064 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
2065 #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit)
2066 #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
2067 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
2068 #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init)
2069 #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes)
2070 #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes)
2071 #define elf_known_obj_attributes_proc(bfd) \
2072 (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC])
2073 #define elf_other_obj_attributes_proc(bfd) \
2074 (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
2075 #define elf_properties(bfd) (elf_tdata (bfd) -> properties)
2076 #define elf_has_no_copy_on_protected(bfd) \
2077 (elf_tdata(bfd) -> has_no_copy_on_protected)
2079 extern void _bfd_elf_swap_verdef_in
2080 (bfd
*, const Elf_External_Verdef
*, Elf_Internal_Verdef
*);
2081 extern void _bfd_elf_swap_verdef_out
2082 (bfd
*, const Elf_Internal_Verdef
*, Elf_External_Verdef
*);
2083 extern void _bfd_elf_swap_verdaux_in
2084 (bfd
*, const Elf_External_Verdaux
*, Elf_Internal_Verdaux
*);
2085 extern void _bfd_elf_swap_verdaux_out
2086 (bfd
*, const Elf_Internal_Verdaux
*, Elf_External_Verdaux
*);
2087 extern void _bfd_elf_swap_verneed_in
2088 (bfd
*, const Elf_External_Verneed
*, Elf_Internal_Verneed
*);
2089 extern void _bfd_elf_swap_verneed_out
2090 (bfd
*, const Elf_Internal_Verneed
*, Elf_External_Verneed
*);
2091 extern void _bfd_elf_swap_vernaux_in
2092 (bfd
*, const Elf_External_Vernaux
*, Elf_Internal_Vernaux
*);
2093 extern void _bfd_elf_swap_vernaux_out
2094 (bfd
*, const Elf_Internal_Vernaux
*, Elf_External_Vernaux
*);
2095 extern void _bfd_elf_swap_versym_in
2096 (bfd
*, const Elf_External_Versym
*, Elf_Internal_Versym
*);
2097 extern void _bfd_elf_swap_versym_out
2098 (bfd
*, const Elf_Internal_Versym
*, Elf_External_Versym
*);
2100 extern unsigned int _bfd_elf_section_from_bfd_section
2101 (bfd
*, asection
*);
2102 extern char *bfd_elf_string_from_elf_section
2103 (bfd
*, unsigned, unsigned);
2104 extern Elf_Internal_Sym
*bfd_elf_get_elf_syms
2105 (bfd
*, Elf_Internal_Shdr
*, size_t, size_t, Elf_Internal_Sym
*, void *,
2106 Elf_External_Sym_Shndx
*);
2107 extern char * bfd_elf_get_str_section (bfd
*, unsigned int);
2108 extern const char *bfd_elf_sym_name
2109 (bfd
*, Elf_Internal_Shdr
*, Elf_Internal_Sym
*, asection
*);
2111 extern bfd_boolean _bfd_elf_copy_private_bfd_data
2113 extern bfd_boolean _bfd_elf_print_private_bfd_data
2115 const char * _bfd_elf_get_symbol_version_string
2116 (bfd
*, asymbol
*, bfd_boolean
, bfd_boolean
*);
2117 extern void bfd_elf_print_symbol
2118 (bfd
*, void *, asymbol
*, bfd_print_symbol_type
);
2120 extern unsigned int _bfd_elf_eh_frame_address_size
2121 (bfd
*, const asection
*);
2122 extern bfd_byte _bfd_elf_encode_eh_address
2123 (bfd
*abfd
, struct bfd_link_info
*info
, asection
*osec
, bfd_vma offset
,
2124 asection
*loc_sec
, bfd_vma loc_offset
, bfd_vma
*encoded
);
2125 extern bfd_boolean _bfd_elf_can_make_relative
2126 (bfd
*input_bfd
, struct bfd_link_info
*info
, asection
*eh_frame_section
);
2128 extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
2129 (const struct bfd_link_info
*, const asection
*,
2130 const Elf_Internal_Rela
*);
2131 extern bfd_vma _bfd_elf_rela_local_sym
2132 (bfd
*, Elf_Internal_Sym
*, asection
**, Elf_Internal_Rela
*);
2133 extern bfd_vma _bfd_elf_rel_local_sym
2134 (bfd
*, Elf_Internal_Sym
*, asection
**, bfd_vma
);
2135 extern bfd_vma _bfd_elf_section_offset
2136 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2138 extern unsigned long bfd_elf_hash
2140 extern unsigned long bfd_elf_gnu_hash
2143 extern bfd_reloc_status_type bfd_elf_generic_reloc
2144 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
2145 extern bfd_boolean bfd_elf_allocate_object
2146 (bfd
*, size_t, enum elf_target_id
);
2147 extern bfd_boolean bfd_elf_make_object
2149 extern bfd_boolean bfd_elf_mkcorefile
2151 extern bfd_boolean _bfd_elf_make_section_from_shdr
2152 (bfd
*, Elf_Internal_Shdr
*, const char *, int);
2153 extern bfd_boolean _bfd_elf_make_section_from_phdr
2154 (bfd
*, Elf_Internal_Phdr
*, int, const char *);
2155 extern struct bfd_hash_entry
*_bfd_elf_link_hash_newfunc
2156 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);
2157 extern struct bfd_link_hash_table
*_bfd_elf_link_hash_table_create
2159 extern void _bfd_elf_link_hash_table_free
2161 extern void _bfd_elf_link_hash_copy_indirect
2162 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2163 struct elf_link_hash_entry
*);
2164 extern void _bfd_elf_link_hash_hide_symbol
2165 (struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd_boolean
);
2166 extern void _bfd_elf_link_hide_symbol
2167 (bfd
*, struct bfd_link_info
*, struct bfd_link_hash_entry
*);
2168 extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
2169 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2170 extern bfd_boolean _bfd_elf_link_hash_table_init
2171 (struct elf_link_hash_table
*, bfd
*,
2172 struct bfd_hash_entry
*(*)
2173 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *),
2174 unsigned int, enum elf_target_id
);
2175 extern bfd_boolean _bfd_elf_slurp_version_tables
2176 (bfd
*, bfd_boolean
);
2177 extern bfd_boolean _bfd_elf_merge_sections
2178 (bfd
*, struct bfd_link_info
*);
2179 extern bfd_boolean _bfd_elf_match_sections_by_type
2180 (bfd
*, const asection
*, bfd
*, const asection
*);
2181 extern bfd_boolean bfd_elf_is_group_section
2182 (bfd
*, const struct bfd_section
*);
2183 extern const char *bfd_elf_group_name
2184 (bfd
*, const struct bfd_section
*);
2185 extern bfd_boolean _bfd_elf_section_already_linked
2186 (bfd
*, asection
*, struct bfd_link_info
*);
2187 extern void bfd_elf_set_group_contents
2188 (bfd
*, asection
*, void *);
2189 extern unsigned int _bfd_elf_filter_global_symbols
2190 (bfd
*, struct bfd_link_info
*, asymbol
**, long);
2191 extern asection
*_bfd_elf_check_kept_section
2192 (asection
*, struct bfd_link_info
*);
2193 #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms
2194 extern void _bfd_elf_copy_link_hash_symbol_type
2195 (bfd
*, struct bfd_link_hash_entry
*, struct bfd_link_hash_entry
*);
2196 extern bfd_boolean _bfd_elf_size_group_sections
2197 (struct bfd_link_info
*);
2198 extern bfd_boolean _bfd_elf_fixup_group_sections
2199 (bfd
*, asection
*);
2200 extern bfd_boolean _bfd_elf_copy_private_header_data
2202 extern bfd_boolean _bfd_elf_copy_private_symbol_data
2203 (bfd
*, asymbol
*, bfd
*, asymbol
*);
2204 #define _bfd_generic_init_private_section_data \
2205 _bfd_elf_init_private_section_data
2206 extern bfd_boolean _bfd_elf_init_private_section_data
2207 (bfd
*, asection
*, bfd
*, asection
*, struct bfd_link_info
*);
2208 extern bfd_boolean _bfd_elf_copy_private_section_data
2209 (bfd
*, asection
*, bfd
*, asection
*);
2210 extern bfd_boolean _bfd_elf_write_object_contents
2212 extern bfd_boolean _bfd_elf_write_corefile_contents
2214 extern bfd_boolean _bfd_elf_set_section_contents
2215 (bfd
*, sec_ptr
, const void *, file_ptr
, bfd_size_type
);
2216 extern long _bfd_elf_get_symtab_upper_bound
2218 extern long _bfd_elf_canonicalize_symtab
2219 (bfd
*, asymbol
**);
2220 extern long _bfd_elf_get_dynamic_symtab_upper_bound
2222 extern long _bfd_elf_canonicalize_dynamic_symtab
2223 (bfd
*, asymbol
**);
2224 extern long _bfd_elf_get_synthetic_symtab
2225 (bfd
*, long, asymbol
**, long, asymbol
**, asymbol
**);
2226 extern long _bfd_elf_get_reloc_upper_bound
2228 extern long _bfd_elf_canonicalize_reloc
2229 (bfd
*, sec_ptr
, arelent
**, asymbol
**);
2230 extern asection
* _bfd_elf_get_dynamic_reloc_section
2231 (bfd
*, asection
*, bfd_boolean
);
2232 extern asection
* _bfd_elf_make_dynamic_reloc_section
2233 (asection
*, bfd
*, unsigned int, bfd
*, bfd_boolean
);
2234 extern long _bfd_elf_get_dynamic_reloc_upper_bound
2236 extern long _bfd_elf_canonicalize_dynamic_reloc
2237 (bfd
*, arelent
**, asymbol
**);
2238 extern asymbol
*_bfd_elf_make_empty_symbol
2240 extern void _bfd_elf_get_symbol_info
2241 (bfd
*, asymbol
*, symbol_info
*);
2242 extern bfd_boolean _bfd_elf_is_local_label_name
2243 (bfd
*, const char *);
2244 extern alent
*_bfd_elf_get_lineno
2246 extern bfd_boolean _bfd_elf_set_arch_mach
2247 (bfd
*, enum bfd_architecture
, unsigned long);
2248 extern bfd_boolean _bfd_elf_find_nearest_line
2249 (bfd
*, asymbol
**, asection
*, bfd_vma
,
2250 const char **, const char **, unsigned int *, unsigned int *);
2251 extern bfd_boolean _bfd_elf_find_line
2252 (bfd
*, asymbol
**, asymbol
*, const char **, unsigned int *);
2253 extern bfd_boolean _bfd_elf_find_inliner_info
2254 (bfd
*, const char **, const char **, unsigned int *);
2255 extern asymbol
*_bfd_elf_find_function
2256 (bfd
*, asymbol
**, asection
*, bfd_vma
, const char **, const char **);
2257 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
2258 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
2259 extern int _bfd_elf_sizeof_headers
2260 (bfd
*, struct bfd_link_info
*);
2261 extern bfd_boolean _bfd_elf_new_section_hook
2262 (bfd
*, asection
*);
2263 extern const struct bfd_elf_special_section
*_bfd_elf_get_special_section
2264 (const char *, const struct bfd_elf_special_section
*, unsigned int);
2265 extern const struct bfd_elf_special_section
*_bfd_elf_get_sec_type_attr
2266 (bfd
*, asection
*);
2268 extern bfd_boolean _bfd_elf_link_hide_sym_by_version
2269 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2271 /* If the target doesn't have reloc handling written yet: */
2272 extern bfd_boolean _bfd_elf_no_info_to_howto
2273 (bfd
*, arelent
*, Elf_Internal_Rela
*);
2275 extern bfd_boolean bfd_section_from_shdr
2276 (bfd
*, unsigned int shindex
);
2277 extern bfd_boolean bfd_section_from_phdr
2278 (bfd
*, Elf_Internal_Phdr
*, int);
2280 extern int _bfd_elf_symbol_from_bfd_symbol
2281 (bfd
*, asymbol
**);
2283 extern Elf_Internal_Sym
*bfd_sym_from_r_symndx
2284 (struct sym_cache
*, bfd
*, unsigned long);
2285 extern asection
*bfd_section_from_elf_index
2286 (bfd
*, unsigned int);
2288 extern struct elf_strtab_hash
* _bfd_elf_strtab_init
2290 extern void _bfd_elf_strtab_free
2291 (struct elf_strtab_hash
*);
2292 extern size_t _bfd_elf_strtab_add
2293 (struct elf_strtab_hash
*, const char *, bfd_boolean
);
2294 extern void _bfd_elf_strtab_addref
2295 (struct elf_strtab_hash
*, size_t);
2296 extern void _bfd_elf_strtab_delref
2297 (struct elf_strtab_hash
*, size_t);
2298 extern unsigned int _bfd_elf_strtab_refcount
2299 (struct elf_strtab_hash
*, size_t);
2300 extern void _bfd_elf_strtab_clear_all_refs
2301 (struct elf_strtab_hash
*);
2302 extern void *_bfd_elf_strtab_save
2303 (struct elf_strtab_hash
*);
2304 extern void _bfd_elf_strtab_restore
2305 (struct elf_strtab_hash
*, void *);
2306 extern bfd_size_type _bfd_elf_strtab_size
2307 (struct elf_strtab_hash
*);
2308 extern bfd_size_type _bfd_elf_strtab_len
2309 (struct elf_strtab_hash
*);
2310 extern bfd_size_type _bfd_elf_strtab_offset
2311 (struct elf_strtab_hash
*, size_t);
2312 extern const char * _bfd_elf_strtab_str
2313 (struct elf_strtab_hash
*, size_t idx
, bfd_size_type
*offset
);
2314 extern bfd_boolean _bfd_elf_strtab_emit
2315 (bfd
*, struct elf_strtab_hash
*);
2316 extern void _bfd_elf_strtab_finalize
2317 (struct elf_strtab_hash
*);
2319 extern bfd_boolean bfd_elf_parse_eh_frame_entries
2320 (bfd
*, struct bfd_link_info
*);
2321 extern bfd_boolean _bfd_elf_parse_eh_frame_entry
2322 (struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2323 extern void _bfd_elf_parse_eh_frame
2324 (bfd
*, struct bfd_link_info
*, asection
*, struct elf_reloc_cookie
*);
2325 extern bfd_boolean _bfd_elf_end_eh_frame_parsing
2326 (struct bfd_link_info
*info
);
2328 extern bfd_boolean _bfd_elf_discard_section_eh_frame
2329 (bfd
*, struct bfd_link_info
*, asection
*,
2330 bfd_boolean (*) (bfd_vma
, void *), struct elf_reloc_cookie
*);
2331 extern bfd_boolean _bfd_elf_adjust_eh_frame_global_symbol
2332 (struct elf_link_hash_entry
*, void *);
2333 extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
2334 (bfd
*, struct bfd_link_info
*);
2335 extern bfd_vma _bfd_elf_eh_frame_section_offset
2336 (bfd
*, struct bfd_link_info
*, asection
*, bfd_vma
);
2337 extern bfd_boolean _bfd_elf_write_section_eh_frame
2338 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2339 bfd_boolean _bfd_elf_write_section_eh_frame_entry
2340 (bfd
*, struct bfd_link_info
*, asection
*, bfd_byte
*);
2341 extern bfd_boolean
_bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info
*);
2342 extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
2343 (bfd
*, struct bfd_link_info
*);
2344 extern bfd_boolean _bfd_elf_eh_frame_present
2345 (struct bfd_link_info
*);
2346 extern bfd_boolean _bfd_elf_eh_frame_entry_present
2347 (struct bfd_link_info
*);
2348 extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
2349 (struct bfd_link_info
*);
2351 extern bfd_boolean
_bfd_elf_hash_symbol (struct elf_link_hash_entry
*);
2353 extern long _bfd_elf_link_lookup_local_dynindx
2354 (struct bfd_link_info
*, bfd
*, long);
2355 extern bfd_boolean _bfd_elf_compute_section_file_positions
2356 (bfd
*, struct bfd_link_info
*);
2357 extern file_ptr _bfd_elf_assign_file_position_for_section
2358 (Elf_Internal_Shdr
*, file_ptr
, bfd_boolean
);
2359 extern bfd_boolean _bfd_elf_modify_headers
2360 (bfd
*, struct bfd_link_info
*);
2362 extern bfd_boolean _bfd_elf_validate_reloc
2365 extern bfd_boolean bfd_elf_record_link_assignment
2366 (bfd
*, struct bfd_link_info
*, const char *, bfd_boolean
,
2368 extern bfd_boolean
bfd_elf_stack_segment_size (bfd
*, struct bfd_link_info
*,
2369 const char *, bfd_vma
);
2370 extern bfd_boolean bfd_elf_size_dynamic_sections
2371 (bfd
*, const char *, const char *, const char *, const char *, const char *,
2372 const char * const *, struct bfd_link_info
*, struct bfd_section
**);
2373 extern bfd_boolean bfd_elf_size_dynsym_hash_dynstr
2374 (bfd
*, struct bfd_link_info
*);
2375 extern bfd_boolean bfd_elf_get_bfd_needed_list
2376 (bfd
*, struct bfd_link_needed_list
**);
2377 extern struct bfd_link_needed_list
*bfd_elf_get_needed_list
2378 (bfd
*, struct bfd_link_info
*);
2379 extern void bfd_elf_set_dt_needed_name
2380 (bfd
*, const char *);
2381 extern const char *bfd_elf_get_dt_soname
2383 extern void bfd_elf_set_dyn_lib_class
2384 (bfd
*, enum dynamic_lib_link_class
);
2385 extern int bfd_elf_get_dyn_lib_class
2387 extern struct bfd_link_needed_list
*bfd_elf_get_runpath_list
2388 (bfd
*, struct bfd_link_info
*);
2389 extern int bfd_elf_discard_info
2390 (bfd
*, struct bfd_link_info
*);
2391 extern unsigned int _bfd_elf_default_action_discarded
2392 (struct bfd_section
*);
2393 extern struct bfd_section
*_bfd_elf_tls_setup
2394 (bfd
*, struct bfd_link_info
*);
2396 extern bfd_boolean _bfd_elf_link_create_dynamic_sections
2397 (bfd
*, struct bfd_link_info
*);
2398 extern bfd_boolean _bfd_elf_omit_section_dynsym_default
2399 (bfd
*, struct bfd_link_info
*, asection
*);
2400 extern bfd_boolean _bfd_elf_omit_section_dynsym_all
2401 (bfd
*, struct bfd_link_info
*, asection
*);
2402 extern bfd_boolean _bfd_elf_create_dynamic_sections
2403 (bfd
*, struct bfd_link_info
*);
2404 extern bfd_boolean _bfd_elf_create_got_section
2405 (bfd
*, struct bfd_link_info
*);
2406 extern asection
*_bfd_elf_section_for_symbol
2407 (struct elf_reloc_cookie
*, unsigned long, bfd_boolean
);
2408 extern struct elf_link_hash_entry
*_bfd_elf_define_linkage_sym
2409 (bfd
*, struct bfd_link_info
*, asection
*, const char *);
2410 extern void _bfd_elf_init_1_index_section
2411 (bfd
*, struct bfd_link_info
*);
2412 extern void _bfd_elf_init_2_index_sections
2413 (bfd
*, struct bfd_link_info
*);
2415 extern bfd_boolean _bfd_elfcore_make_pseudosection
2416 (bfd
*, char *, size_t, ufile_ptr
);
2417 extern char *_bfd_elfcore_strndup
2418 (bfd
*, char *, size_t);
2420 extern Elf_Internal_Rela
*_bfd_elf_link_read_relocs
2421 (bfd
*, asection
*, void *, Elf_Internal_Rela
*, bfd_boolean
);
2423 extern bfd_boolean _bfd_elf_link_output_relocs
2424 (bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*,
2425 struct elf_link_hash_entry
**);
2427 extern bfd_boolean _bfd_elf_adjust_dynamic_copy
2428 (struct bfd_link_info
*, struct elf_link_hash_entry
*, asection
*);
2430 extern bfd_boolean _bfd_elf_dynamic_symbol_p
2431 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2433 extern bfd_boolean _bfd_elf_symbol_refs_local_p
2434 (struct elf_link_hash_entry
*, struct bfd_link_info
*, bfd_boolean
);
2436 extern bfd_reloc_status_type bfd_elf_perform_complex_relocation
2437 (bfd
*, asection
*, bfd_byte
*, Elf_Internal_Rela
*, bfd_vma
);
2439 extern bfd_boolean _bfd_elf_setup_sections
2442 extern struct bfd_link_hash_entry
*bfd_elf_define_start_stop
2443 (struct bfd_link_info
*, const char *, asection
*);
2445 extern bfd_boolean
_bfd_elf_init_file_header (bfd
*, struct bfd_link_info
*);
2447 extern bfd_boolean
_bfd_elf_final_write_processing (bfd
*);
2449 extern bfd_cleanup bfd_elf32_object_p
2451 extern bfd_cleanup bfd_elf32_core_file_p
2453 extern char *bfd_elf32_core_file_failing_command
2455 extern int bfd_elf32_core_file_failing_signal
2457 extern bfd_boolean bfd_elf32_core_file_matches_executable_p
2459 extern int bfd_elf32_core_file_pid
2461 extern bfd_boolean _bfd_elf32_core_find_build_id
2464 extern bfd_boolean bfd_elf32_swap_symbol_in
2465 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2466 extern void bfd_elf32_swap_symbol_out
2467 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2468 extern void bfd_elf32_swap_reloc_in
2469 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2470 extern void bfd_elf32_swap_reloc_out
2471 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2472 extern void bfd_elf32_swap_reloca_in
2473 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2474 extern void bfd_elf32_swap_reloca_out
2475 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2476 extern void bfd_elf32_swap_phdr_in
2477 (bfd
*, const Elf32_External_Phdr
*, Elf_Internal_Phdr
*);
2478 extern void bfd_elf32_swap_phdr_out
2479 (bfd
*, const Elf_Internal_Phdr
*, Elf32_External_Phdr
*);
2480 extern void bfd_elf32_swap_dyn_in
2481 (bfd
*, const void *, Elf_Internal_Dyn
*);
2482 extern void bfd_elf32_swap_dyn_out
2483 (bfd
*, const Elf_Internal_Dyn
*, void *);
2484 extern long bfd_elf32_slurp_symbol_table
2485 (bfd
*, asymbol
**, bfd_boolean
);
2486 extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
2488 extern int bfd_elf32_write_out_phdrs
2489 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2490 extern bfd_boolean bfd_elf32_checksum_contents
2491 (bfd
* , void (*) (const void *, size_t, void *), void *);
2492 extern void bfd_elf32_write_relocs
2493 (bfd
*, asection
*, void *);
2494 extern bfd_boolean bfd_elf32_slurp_reloc_table
2495 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2497 extern bfd_cleanup bfd_elf64_object_p
2499 extern bfd_cleanup bfd_elf64_core_file_p
2501 extern char *bfd_elf64_core_file_failing_command
2503 extern int bfd_elf64_core_file_failing_signal
2505 extern bfd_boolean bfd_elf64_core_file_matches_executable_p
2507 extern int bfd_elf64_core_file_pid
2509 extern bfd_boolean _bfd_elf64_core_find_build_id
2512 extern bfd_boolean bfd_elf64_swap_symbol_in
2513 (bfd
*, const void *, const void *, Elf_Internal_Sym
*);
2514 extern void bfd_elf64_swap_symbol_out
2515 (bfd
*, const Elf_Internal_Sym
*, void *, void *);
2516 extern void bfd_elf64_swap_reloc_in
2517 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2518 extern void bfd_elf64_swap_reloc_out
2519 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2520 extern void bfd_elf64_swap_reloca_in
2521 (bfd
*, const bfd_byte
*, Elf_Internal_Rela
*);
2522 extern void bfd_elf64_swap_reloca_out
2523 (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
2524 extern void bfd_elf64_swap_phdr_in
2525 (bfd
*, const Elf64_External_Phdr
*, Elf_Internal_Phdr
*);
2526 extern void bfd_elf64_swap_phdr_out
2527 (bfd
*, const Elf_Internal_Phdr
*, Elf64_External_Phdr
*);
2528 extern void bfd_elf64_swap_dyn_in
2529 (bfd
*, const void *, Elf_Internal_Dyn
*);
2530 extern void bfd_elf64_swap_dyn_out
2531 (bfd
*, const Elf_Internal_Dyn
*, void *);
2532 extern long bfd_elf64_slurp_symbol_table
2533 (bfd
*, asymbol
**, bfd_boolean
);
2534 extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
2536 extern int bfd_elf64_write_out_phdrs
2537 (bfd
*, const Elf_Internal_Phdr
*, unsigned int);
2538 extern bfd_boolean bfd_elf64_checksum_contents
2539 (bfd
* , void (*) (const void *, size_t, void *), void *);
2540 extern void bfd_elf64_write_relocs
2541 (bfd
*, asection
*, void *);
2542 extern bfd_boolean bfd_elf64_slurp_reloc_table
2543 (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2545 extern bfd_boolean _bfd_elf_default_relocs_compatible
2546 (const bfd_target
*, const bfd_target
*);
2548 extern bfd_boolean _bfd_elf_relocs_compatible
2549 (const bfd_target
*, const bfd_target
*);
2550 extern bfd_boolean _bfd_elf_notice_as_needed
2551 (bfd
*, struct bfd_link_info
*, enum notice_asneeded_action
);
2553 extern struct elf_link_hash_entry
*_bfd_elf_archive_symbol_lookup
2554 (bfd
*, struct bfd_link_info
*, const char *);
2555 extern bfd_boolean bfd_elf_link_add_symbols
2556 (bfd
*, struct bfd_link_info
*);
2557 extern bfd_boolean _bfd_elf_add_dynamic_entry
2558 (struct bfd_link_info
*, bfd_vma
, bfd_vma
);
2559 extern bfd_boolean _bfd_elf_strip_zero_sized_dynamic_sections
2560 (struct bfd_link_info
*);
2561 extern int bfd_elf_add_dt_needed_tag
2562 (bfd
*, struct bfd_link_info
*);
2563 extern bfd_boolean _bfd_elf_link_check_relocs
2564 (bfd
*, struct bfd_link_info
*);
2566 extern bfd_boolean bfd_elf_link_record_dynamic_symbol
2567 (struct bfd_link_info
*, struct elf_link_hash_entry
*);
2569 extern int bfd_elf_link_record_local_dynamic_symbol
2570 (struct bfd_link_info
*, bfd
*, long);
2572 extern bfd_boolean _bfd_elf_close_and_cleanup
2575 extern bfd_boolean _bfd_elf_common_definition
2576 (Elf_Internal_Sym
*);
2578 extern unsigned int _bfd_elf_common_section_index
2581 extern asection
*_bfd_elf_common_section
2584 extern bfd_vma _bfd_elf_default_got_elt_size
2585 (bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*, bfd
*,
2588 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
2589 (bfd
*, arelent
*, struct bfd_symbol
*, void *,
2590 asection
*, bfd
*, char **);
2592 extern bfd_boolean bfd_elf_final_link
2593 (bfd
*, struct bfd_link_info
*);
2595 extern void _bfd_elf_gc_keep
2596 (struct bfd_link_info
*info
);
2598 extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
2599 (struct elf_link_hash_entry
*h
, void *inf
);
2601 extern bfd_boolean bfd_elf_gc_sections
2602 (bfd
*, struct bfd_link_info
*);
2604 extern bfd_boolean bfd_elf_gc_record_vtinherit
2605 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2607 extern bfd_boolean bfd_elf_gc_record_vtentry
2608 (bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
);
2610 extern asection
*_bfd_elf_gc_mark_hook
2611 (asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
2612 struct elf_link_hash_entry
*, Elf_Internal_Sym
*);
2614 extern asection
*_bfd_elf_gc_mark_rsec
2615 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2616 struct elf_reloc_cookie
*, bfd_boolean
*);
2618 extern bfd_boolean _bfd_elf_gc_mark_reloc
2619 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
,
2620 struct elf_reloc_cookie
*);
2622 extern bfd_boolean _bfd_elf_gc_mark_fdes
2623 (struct bfd_link_info
*, asection
*, asection
*, elf_gc_mark_hook_fn
,
2624 struct elf_reloc_cookie
*);
2626 extern bfd_boolean _bfd_elf_gc_mark
2627 (struct bfd_link_info
*, asection
*, elf_gc_mark_hook_fn
);
2629 extern bfd_boolean _bfd_elf_gc_mark_extra_sections
2630 (struct bfd_link_info
*, elf_gc_mark_hook_fn
);
2632 extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
2633 (bfd
*, struct bfd_link_info
*);
2635 extern bfd_boolean bfd_elf_gc_common_final_link
2636 (bfd
*, struct bfd_link_info
*);
2638 extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
2641 extern struct elf_segment_map
* _bfd_elf_make_dynamic_segment
2642 (bfd
*, asection
*);
2644 extern bfd_boolean _bfd_elf_map_sections_to_segments
2645 (bfd
*, struct bfd_link_info
*);
2647 extern bfd_boolean
_bfd_elf_is_function_type (unsigned int);
2649 extern bfd_size_type
_bfd_elf_maybe_function_sym (const asymbol
*, asection
*,
2652 extern asection
*_bfd_elf_plt_get_reloc_section (bfd
*, const char *);
2654 extern int bfd_elf_get_default_section_type (flagword
);
2656 extern bfd_boolean bfd_elf_lookup_section_flags
2657 (struct bfd_link_info
*, struct flag_info
*, asection
*);
2659 extern Elf_Internal_Phdr
* _bfd_elf_find_segment_containing_section
2660 (bfd
* abfd
, asection
* section
);
2662 /* PowerPC @tls opcode transform/validate. */
2663 extern unsigned int _bfd_elf_ppc_at_tls_transform
2664 (unsigned int, unsigned int);
2665 /* PowerPC @tprel opcode transform/validate. */
2666 extern unsigned int _bfd_elf_ppc_at_tprel_transform
2667 (unsigned int, unsigned int);
2668 /* PowerPC elf_object_p tweak. */
2669 extern bfd_boolean
_bfd_elf_ppc_set_arch (bfd
*);
2670 /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */
2671 extern bfd_boolean _bfd_elf_ppc_merge_fp_attributes
2672 (bfd
*, struct bfd_link_info
*);
2674 /* Return an upper bound on the number of bytes required to store a
2675 copy of ABFD's program header table entries. Return -1 if an error
2676 occurs; bfd_get_error will return an appropriate code. */
2677 extern long bfd_get_elf_phdr_upper_bound
2680 /* Copy ABFD's program header table entries to *PHDRS. The entries
2681 will be stored as an array of Elf_Internal_Phdr structures, as
2682 defined in include/elf/internal.h. To find out how large the
2683 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
2685 Return the number of program header table entries read, or -1 if an
2686 error occurs; bfd_get_error will return an appropriate code. */
2687 extern int bfd_get_elf_phdrs
2688 (bfd
*abfd
, void *phdrs
);
2690 /* Exported interface for writing elf corefile notes. */
2691 extern char *elfcore_write_note
2692 (bfd
*, char *, int *, const char *, int, const void *, int);
2693 extern char *elfcore_write_prpsinfo
2694 (bfd
*, char *, int *, const char *, const char *);
2695 extern char *elfcore_write_prstatus
2696 (bfd
*, char *, int *, long, int, const void *);
2697 extern char * elfcore_write_pstatus
2698 (bfd
*, char *, int *, long, int, const void *);
2699 extern char *elfcore_write_prfpreg
2700 (bfd
*, char *, int *, const void *, int);
2701 extern char *elfcore_write_prxfpreg
2702 (bfd
*, char *, int *, const void *, int);
2703 extern char *elfcore_write_xstatereg
2704 (bfd
*, char *, int *, const void *, int);
2705 extern char *elfcore_write_ppc_vmx
2706 (bfd
*, char *, int *, const void *, int);
2707 extern char *elfcore_write_ppc_vsx
2708 (bfd
*, char *, int *, const void *, int);
2709 extern char *elfcore_write_ppc_tar
2710 (bfd
*, char *, int *, const void *, int);
2711 extern char *elfcore_write_ppc_ppr
2712 (bfd
*, char *, int *, const void *, int);
2713 extern char *elfcore_write_ppc_dscr
2714 (bfd
*, char *, int *, const void *, int);
2715 extern char *elfcore_write_ppc_ebb
2716 (bfd
*, char *, int *, const void *, int);
2717 extern char *elfcore_write_ppc_pmu
2718 (bfd
*, char *, int *, const void *, int);
2719 extern char *elfcore_write_ppc_tm_cgpr
2720 (bfd
*, char *, int *, const void *, int);
2721 extern char *elfcore_write_ppc_tm_cfpr
2722 (bfd
*, char *, int *, const void *, int);
2723 extern char *elfcore_write_ppc_tm_cvmx
2724 (bfd
*, char *, int *, const void *, int);
2725 extern char *elfcore_write_ppc_tm_cvsx
2726 (bfd
*, char *, int *, const void *, int);
2727 extern char *elfcore_write_ppc_tm_spr
2728 (bfd
*, char *, int *, const void *, int);
2729 extern char *elfcore_write_ppc_tm_ctar
2730 (bfd
*, char *, int *, const void *, int);
2731 extern char *elfcore_write_ppc_tm_cppr
2732 (bfd
*, char *, int *, const void *, int);
2733 extern char *elfcore_write_ppc_tm_cdscr
2734 (bfd
*, char *, int *, const void *, int);
2735 extern char *elfcore_write_s390_timer
2736 (bfd
*, char *, int *, const void *, int);
2737 extern char *elfcore_write_s390_todcmp
2738 (bfd
*, char *, int *, const void *, int);
2739 extern char *elfcore_write_s390_todpreg
2740 (bfd
*, char *, int *, const void *, int);
2741 extern char *elfcore_write_s390_ctrs
2742 (bfd
*, char *, int *, const void *, int);
2743 extern char *elfcore_write_s390_prefix
2744 (bfd
*, char *, int *, const void *, int);
2745 extern char *elfcore_write_s390_last_break
2746 (bfd
*, char *, int *, const void *, int);
2747 extern char *elfcore_write_s390_system_call
2748 (bfd
*, char *, int *, const void *, int);
2749 extern char *elfcore_write_s390_tdb
2750 (bfd
*, char *, int *, const void *, int);
2751 extern char *elfcore_write_s390_vxrs_low
2752 (bfd
*, char *, int *, const void *, int);
2753 extern char *elfcore_write_s390_vxrs_high
2754 (bfd
*, char *, int *, const void *, int);
2755 extern char *elfcore_write_s390_gs_cb
2756 (bfd
*, char *, int *, const void *, int);
2757 extern char *elfcore_write_s390_gs_bc
2758 (bfd
*, char *, int *, const void *, int);
2759 extern char *elfcore_write_arm_vfp
2760 (bfd
*, char *, int *, const void *, int);
2761 extern char *elfcore_write_aarch_tls
2762 (bfd
*, char *, int *, const void *, int);
2763 extern char *elfcore_write_aarch_hw_break
2764 (bfd
*, char *, int *, const void *, int);
2765 extern char *elfcore_write_aarch_hw_watch
2766 (bfd
*, char *, int *, const void *, int);
2767 extern char *elfcore_write_aarch_sve
2768 (bfd
*, char *, int *, const void *, int);
2769 extern char *elfcore_write_aarch_pauth
2770 (bfd
*, char *, int *, const void *, int);
2771 extern char *elfcore_write_arc_v2
2772 (bfd
*, char *, int *, const void *, int);
2773 extern char *elfcore_write_lwpstatus
2774 (bfd
*, char *, int *, long, int, const void *);
2775 extern char *elfcore_write_register_note
2776 (bfd
*, char *, int *, const char *, const void *, int);
2778 /* Internal structure which holds information to be included in the
2779 PRPSINFO section of Linux core files.
2781 This is an "internal" structure in the sense that it should be used
2782 to pass information to BFD (via the `elfcore_write_linux_prpsinfo'
2783 function), so things like endianess shouldn't be an issue. This
2784 structure will eventually be converted in one of the
2785 `elf_external_linux_*' structures and written out to an output bfd
2786 by one of the functions declared below. */
2788 struct elf_internal_linux_prpsinfo
2790 char pr_state
; /* Numeric process state. */
2791 char pr_sname
; /* Char for pr_state. */
2792 char pr_zomb
; /* Zombie. */
2793 char pr_nice
; /* Nice val. */
2794 unsigned long pr_flag
; /* Flags. */
2795 unsigned int pr_uid
;
2796 unsigned int pr_gid
;
2797 int pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
2798 char pr_fname
[16 + 1]; /* Filename of executable. */
2799 char pr_psargs
[80 + 1]; /* Initial part of arg list. */
2802 /* Linux/most 32-bit archs. */
2803 extern char *elfcore_write_linux_prpsinfo32
2804 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2806 /* Linux/most 64-bit archs. */
2807 extern char *elfcore_write_linux_prpsinfo64
2808 (bfd
*, char *, int *, const struct elf_internal_linux_prpsinfo
*);
2810 extern bfd
*_bfd_elf32_bfd_from_remote_memory
2811 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2812 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2813 extern bfd
*_bfd_elf64_bfd_from_remote_memory
2814 (bfd
*templ
, bfd_vma ehdr_vma
, bfd_size_type size
, bfd_vma
*loadbasep
,
2815 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
));
2817 extern bfd_vma
bfd_elf_obj_attr_size (bfd
*);
2818 extern void bfd_elf_set_obj_attr_contents (bfd
*, bfd_byte
*, bfd_vma
);
2819 extern int bfd_elf_get_obj_attr_int (bfd
*, int, unsigned int);
2820 extern void bfd_elf_add_obj_attr_int (bfd
*, int, unsigned int, unsigned int);
2821 #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
2822 bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2823 extern void bfd_elf_add_obj_attr_string (bfd
*, int, unsigned int, const char *);
2824 #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
2825 bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2826 extern void bfd_elf_add_obj_attr_int_string (bfd
*, int, unsigned int,
2827 unsigned int, const char *);
2828 #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
2829 bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
2832 extern char *_bfd_elf_attr_strdup (bfd
*, const char *);
2833 extern void _bfd_elf_copy_obj_attributes (bfd
*, bfd
*);
2834 extern int _bfd_elf_obj_attrs_arg_type (bfd
*, int, unsigned int);
2835 extern void _bfd_elf_parse_attributes (bfd
*, Elf_Internal_Shdr
*);
2836 extern bfd_boolean _bfd_elf_merge_object_attributes
2837 (bfd
*, struct bfd_link_info
*);
2838 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_low (bfd
*, bfd
*, int);
2839 extern bfd_boolean
_bfd_elf_merge_unknown_attribute_list (bfd
*, bfd
*);
2840 extern Elf_Internal_Shdr
*_bfd_elf_single_rel_hdr (asection
*sec
);
2841 extern bfd_boolean
elf_read_notes (bfd
*, file_ptr
, bfd_size_type
, size_t);
2843 extern bfd_boolean _bfd_elf_parse_gnu_properties
2844 (bfd
*, Elf_Internal_Note
*);
2845 extern elf_property
* _bfd_elf_get_property
2846 (bfd
*, unsigned int, unsigned int);
2847 extern bfd
*_bfd_elf_link_setup_gnu_properties
2848 (struct bfd_link_info
*);
2849 extern bfd_size_type _bfd_elf_convert_gnu_property_size
2851 extern bfd_boolean _bfd_elf_convert_gnu_properties
2852 (bfd
*, asection
*, bfd
*, bfd_byte
**, bfd_size_type
*);
2854 /* The linker may need to keep track of the number of relocs that it
2855 decides to copy as dynamic relocs in check_relocs for each symbol.
2856 This is so that it can later discard them if they are found to be
2857 unnecessary. We can store the information in a field extending the
2858 regular ELF linker hash table. */
2860 struct elf_dyn_relocs
2862 struct elf_dyn_relocs
*next
;
2864 /* The input section of the reloc. */
2867 /* Total number of relocs copied for the input section. */
2868 bfd_size_type count
;
2870 /* Number of pc-relative relocs copied for the input section. */
2871 bfd_size_type pc_count
;
2874 extern bfd_boolean _bfd_elf_create_ifunc_sections
2875 (bfd
*, struct bfd_link_info
*);
2876 extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
2877 (struct bfd_link_info
*, struct elf_link_hash_entry
*,
2878 struct elf_dyn_relocs
**, bfd_boolean
*, unsigned int,
2879 unsigned int, unsigned int, bfd_boolean
);
2881 extern void elf_append_rela (bfd
*, asection
*, Elf_Internal_Rela
*);
2882 extern void elf_append_rel (bfd
*, asection
*, Elf_Internal_Rela
*);
2884 extern bfd_vma
elf64_r_info (bfd_vma
, bfd_vma
);
2885 extern bfd_vma
elf64_r_sym (bfd_vma
);
2886 extern bfd_vma
elf32_r_info (bfd_vma
, bfd_vma
);
2887 extern bfd_vma
elf32_r_sym (bfd_vma
);
2889 extern bfd_boolean
is_debuginfo_file (bfd
*);
2892 extern bfd_boolean _bfd_elf_init_secondary_reloc_section
2893 (bfd
*, Elf_Internal_Shdr
*, const char *, unsigned int);
2894 extern bfd_boolean _bfd_elf_slurp_secondary_reloc_section
2895 (bfd
*, asection
*, asymbol
**);
2896 extern bfd_boolean _bfd_elf_copy_special_section_fields
2897 (const bfd
*, bfd
*, const Elf_Internal_Shdr
*, Elf_Internal_Shdr
*);
2898 extern bfd_boolean _bfd_elf_write_secondary_reloc_section
2899 (bfd
*, asection
*);
2900 extern unsigned int _bfd_elf_symbol_section_index
2901 (bfd
*, elf_symbol_type
*);
2903 extern asection
*_bfd_elf_readonly_dynrelocs
2904 (struct elf_link_hash_entry
*);
2905 extern bfd_boolean _bfd_elf_maybe_set_textrel
2906 (struct elf_link_hash_entry
*, void *);
2908 /* Large common section. */
2909 extern asection _bfd_elf_large_com_section
;
2911 /* Hash for local symbol with the first section id, ID, in the input
2912 file and the local symbol index, SYM. */
2913 #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
2914 (((((ID) & 0xffU) << 24) | (((ID) & 0xff00) << 8)) \
2915 ^ (SYM) ^ (((ID) & 0xffff0000U) >> 16))
2917 /* This is the condition under which finish_dynamic_symbol will be called.
2918 If our finish_dynamic_symbol isn't called, we'll need to do something
2919 about initializing any .plt and .got entries in relocate_section. */
2920 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
2922 && ((SHARED) || !(H)->forced_local) \
2923 && ((H)->dynindx != -1 || (H)->forced_local))
2925 /* This macro is to avoid lots of duplicated code in the body
2926 of xxx_relocate_section() in the various elfxx-xxxx.c files. */
2927 #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \
2928 r_symndx, symtab_hdr, sym_hashes, \
2929 h, sec, relocation, \
2930 unresolved_reloc, warned, ignored) \
2933 /* It seems this can happen with erroneous or unsupported \
2934 input (mixing a.out and elf in an archive, for example.) */ \
2935 if (sym_hashes == NULL) \
2938 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \
2940 if (info->wrap_hash != NULL \
2941 && (input_section->flags & SEC_DEBUGGING) != 0) \
2942 h = ((struct elf_link_hash_entry *) \
2943 unwrap_hash_lookup (info, input_bfd, &h->root)); \
2945 while (h->root.type == bfd_link_hash_indirect \
2946 || h->root.type == bfd_link_hash_warning) \
2947 h = (struct elf_link_hash_entry *) h->root.u.i.link; \
2951 unresolved_reloc = FALSE; \
2953 if (h->root.type == bfd_link_hash_defined \
2954 || h->root.type == bfd_link_hash_defweak) \
2956 sec = h->root.u.def.section; \
2958 || sec->output_section == NULL) \
2959 /* Set a flag that will be cleared later if we find a \
2960 relocation value for this symbol. output_section \
2961 is typically NULL for symbols satisfied by a shared \
2963 unresolved_reloc = TRUE; \
2965 relocation = (h->root.u.def.value \
2966 + sec->output_section->vma \
2967 + sec->output_offset); \
2969 else if (h->root.type == bfd_link_hash_undefweak) \
2971 else if (info->unresolved_syms_in_objects == RM_IGNORE \
2972 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \
2974 else if (!bfd_link_relocatable (info)) \
2977 err = (info->unresolved_syms_in_objects == RM_DIAGNOSE && \
2978 !info->warn_unresolved_syms) \
2979 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT; \
2980 (*info->callbacks->undefined_symbol) (info, \
2981 h->root.root.string, \
2984 rel->r_offset, err); \
2987 (void) unresolved_reloc; \
2993 /* This macro is to avoid lots of duplicated code in the body of the
2994 loop over relocations in xxx_relocate_section() in the various
2997 Handle relocations against symbols from removed linkonce sections,
2998 or sections discarded by a linker script. When doing a relocatable
2999 link, we remove such relocations. Otherwise, we just want the
3000 section contents zeroed and avoid any special processing. */
3001 #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
3002 rel, count, relend, \
3003 howto, index, contents) \
3006 _bfd_clear_contents (howto, input_bfd, input_section, \
3007 contents, rel[index].r_offset); \
3009 if (bfd_link_relocatable (info) \
3010 && (input_section->flags & SEC_DEBUGGING)) \
3012 /* Only remove relocations in debug sections since other \
3013 sections may require relocations. */ \
3014 Elf_Internal_Shdr *rel_hdr; \
3016 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
3018 /* Avoid empty output section. */ \
3019 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
3021 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
3022 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
3023 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
3025 memmove (rel, rel + count, \
3026 (relend - rel - count) * sizeof (*rel)); \
3028 input_section->reloc_count -= count; \
3035 for (i_ = 0; i_ < count; i_++) \
3037 rel[i_].r_info = 0; \
3038 rel[i_].r_addend = 0; \
3044 /* Will a symbol be bound to the definition within the shared
3045 library, if any. A unique symbol can never be bound locally. */
3046 #define SYMBOLIC_BIND(INFO, H) \
3047 (!(H)->unique_global \
3048 && ((INFO)->symbolic \
3049 || (H)->start_stop \
3050 || ((INFO)->dynamic && !(H)->dynamic)))
3052 /* Determine if a section contains CTF data, using its name. */
3053 static inline bfd_boolean
3054 bfd_section_is_ctf (const asection
*sec
)
3056 const char *name
= bfd_section_name (sec
);
3057 return strncmp (name
, ".ctf", 4) == 0 && (name
[4] == 0 || name
[4] == '.');
3063 #endif /* _LIBELF_H_ */