1 /* BFD back-end data structures for ELF files.
2 Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 1999, 2000 Free Software
4 Written by Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "elf/common.h"
26 #include "elf/internal.h"
27 #include "elf/external.h"
30 /* If size isn't specified as 64 or 32, NAME macro should fail. */
33 #define NAME(x,y) CAT4(x,64,_,y)
36 #define NAME(x,y) CAT4(x,32,_,y)
41 #define NAME(x,y) CAT4(x,NOSIZE,_,y)
44 #define ElfNAME(X) NAME(Elf,X)
45 #define elfNAME(X) NAME(elf,X)
47 /* Information held for an ELF symbol. The first field is the
48 corresponding asymbol. Every symbol is an ELF file is actually a
49 pointer to this structure, although it is often handled as a
50 pointer to an asymbol. */
56 /* ELF symbol information. */
57 Elf_Internal_Sym internal_elf_sym
;
58 /* Backend specific information. */
61 unsigned int hppa_arg_reloc
;
67 /* Version information. This is from an Elf_Internal_Versym
68 structure in a SHT_GNU_versym section. It is zero if there is no
69 version information. */
70 unsigned short version
;
74 /* ELF linker hash table entries. */
76 struct elf_link_hash_entry
78 struct bfd_link_hash_entry root
;
80 /* Symbol index in output file. This is initialized to -1. It is
81 set to -2 if the symbol is used by a reloc. */
87 /* Symbol index as a dynamic symbol. Initialized to -1, and remains
88 -1 if this is not a dynamic symbol. */
89 /* ??? Note that this is consistently used as a synonym for tests
90 against whether we can perform various simplifying transformations
91 to the code. (E.g. changing a pc-relative jump to a PLT entry
92 into a pc-relative jump to the target function.) That test, which
93 is often relatively complex, and someplaces wrong or incomplete,
94 should really be replaced by a predicate in elflink.c.
96 End result: this field -1 does not indicate that the symbol is
97 not in the dynamic symbol table, but rather that the symbol is
98 not visible outside this DSO. */
101 /* String table index in .dynstr if this is a dynamic symbol. */
102 unsigned long dynstr_index
;
104 /* If this is a weak defined symbol from a dynamic object, this
105 field points to a defined symbol with the same value, if there is
106 one. Otherwise it is NULL. */
107 struct elf_link_hash_entry
*weakdef
;
109 /* If this symbol requires an entry in the global offset table, the
110 processor specific backend uses this field to track usage and
111 final offset. We use a union and two names primarily to document
112 the intent of any particular piece of code. The field should be
113 used as a count until size_dynamic_sections, at which point the
114 contents of the .got is fixed. Afterward, if this field is -1,
115 then the symbol does not require a global offset table entry. */
118 bfd_signed_vma refcount
;
122 /* Same, but tracks a procedure linkage table entry. */
125 bfd_signed_vma refcount
;
129 /* If this symbol is used in the linker created sections, the processor
130 specific backend uses this field to map the field into the offset
131 from the beginning of the section. */
132 struct elf_linker_section_pointers
*linker_section_pointer
;
134 /* Version information. */
137 /* This field is used for a symbol which is not defined in a
138 regular object. It points to the version information read in
139 from the dynamic object. */
140 Elf_Internal_Verdef
*verdef
;
141 /* This field is used for a symbol which is defined in a regular
142 object. It is set up in size_dynamic_sections. It points to
143 the version information we should write out for this symbol. */
144 struct bfd_elf_version_tree
*vertree
;
147 /* Virtual table entry use information. This array is nominally of size
148 size/sizeof(target_void_pointer), though we have to be able to assume
149 and track a size while the symbol is still undefined. It is indexed
150 via offset/sizeof(target_void_pointer). */
151 size_t vtable_entries_size
;
152 boolean
*vtable_entries_used
;
154 /* Virtual table derivation info. */
155 struct elf_link_hash_entry
*vtable_parent
;
157 /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
160 /* Symbol st_other value, symbol visibility. */
163 /* Hash value of the name computed using the ELF hash function. */
164 unsigned long elf_hash_value
;
166 /* Some flags; legal values follow. */
167 unsigned short elf_link_hash_flags
;
168 /* Symbol is referenced by a non-shared object. */
169 #define ELF_LINK_HASH_REF_REGULAR 01
170 /* Symbol is defined by a non-shared object. */
171 #define ELF_LINK_HASH_DEF_REGULAR 02
172 /* Symbol is referenced by a shared object. */
173 #define ELF_LINK_HASH_REF_DYNAMIC 04
174 /* Symbol is defined by a shared object. */
175 #define ELF_LINK_HASH_DEF_DYNAMIC 010
176 /* Symbol has a non-weak reference from a non-shared object. */
177 #define ELF_LINK_HASH_REF_REGULAR_NONWEAK 020
178 /* Dynamic symbol has been adjustd. */
179 #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 040
180 /* Symbol needs a copy reloc. */
181 #define ELF_LINK_HASH_NEEDS_COPY 0100
182 /* Symbol needs a procedure linkage table entry. */
183 #define ELF_LINK_HASH_NEEDS_PLT 0200
184 /* Symbol appears in a non-ELF input file. */
185 #define ELF_LINK_NON_ELF 0400
186 /* Symbol should be marked as hidden in the version information. */
187 #define ELF_LINK_HIDDEN 01000
188 /* Symbol was forced to local scope due to a version script file. */
189 #define ELF_LINK_FORCED_LOCAL 02000
190 /* Symbol was marked during garbage collection. */
191 #define ELF_LINK_HASH_MARK 04000
192 /* Symbol is referenced by a non-GOT/non-PLT relocation. This is
193 not currently set by all the backends. */
194 #define ELF_LINK_NON_GOT_REF 010000
197 /* Records local symbols to be emitted in the dynamic symbol table. */
199 struct elf_link_local_dynamic_entry
201 struct elf_link_local_dynamic_entry
*next
;
203 /* The input bfd this symbol came from. */
206 /* The index of the local symbol being copied. */
209 /* The index in the outgoing dynamic symbol table. */
212 /* A copy of the input symbol. */
213 Elf_Internal_Sym isym
;
216 /* ELF linker hash table. */
218 struct elf_link_hash_table
220 struct bfd_link_hash_table root
;
221 /* Whether we have created the special dynamic sections required
222 when linking against or generating a shared object. */
223 boolean dynamic_sections_created
;
224 /* The BFD used to hold special sections created by the linker.
225 This will be the first BFD found which requires these sections to
228 /* The number of symbols found in the link which must be put into
229 the .dynsym section. */
230 bfd_size_type dynsymcount
;
231 /* The string table of dynamic symbols, which becomes the .dynstr
233 struct bfd_strtab_hash
*dynstr
;
234 /* The number of buckets in the hash table in the .hash section.
235 This is based on the number of dynamic symbols. */
236 bfd_size_type bucketcount
;
237 /* A linked list of DT_NEEDED names found in dynamic objects
238 included in the link. */
239 struct bfd_link_needed_list
*needed
;
240 /* The _GLOBAL_OFFSET_TABLE_ symbol. */
241 struct elf_link_hash_entry
*hgot
;
242 /* A pointer to information used to link stabs in sections. */
244 /* A linked list of local symbols to be added to .dynsym. */
245 struct elf_link_local_dynamic_entry
*dynlocal
;
246 /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
247 objects included in the link. */
248 struct bfd_link_needed_list
*runpath
;
251 /* Look up an entry in an ELF linker hash table. */
253 #define elf_link_hash_lookup(table, string, create, copy, follow) \
254 ((struct elf_link_hash_entry *) \
255 bfd_link_hash_lookup (&(table)->root, (string), (create), \
258 /* Traverse an ELF linker hash table. */
260 #define elf_link_hash_traverse(table, func, info) \
261 (bfd_link_hash_traverse \
263 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
266 /* Get the ELF linker hash table from a link_info structure. */
268 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
270 /* Constant information held for an ELF backend. */
272 struct elf_size_info
{
273 unsigned char sizeof_ehdr
, sizeof_phdr
, sizeof_shdr
;
274 unsigned char sizeof_rel
, sizeof_rela
, sizeof_sym
, sizeof_dyn
, sizeof_note
;
276 /* The size of entries in the .hash section. */
277 unsigned char sizeof_hash_entry
;
279 /* The number of internal relocations to allocate per external
281 unsigned char int_rels_per_ext_rel
;
283 unsigned char arch_size
, file_align
;
284 unsigned char elfclass
, ev_current
;
285 int (*write_out_phdrs
) PARAMS ((bfd
*, const Elf_Internal_Phdr
*, int));
286 boolean (*write_shdrs_and_ehdr
) PARAMS ((bfd
*));
287 void (*write_relocs
) PARAMS ((bfd
*, asection
*, PTR
));
288 void (*swap_symbol_out
) PARAMS ((bfd
*, const Elf_Internal_Sym
*, PTR
));
289 boolean (*slurp_reloc_table
)
290 PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
291 long (*slurp_symbol_table
) PARAMS ((bfd
*, asymbol
**, boolean
));
292 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
293 void (*swap_dyn_out
) PARAMS ((bfd
*, const Elf_Internal_Dyn
*, PTR
));
295 /* This function, if defined, is called to swap in a REL
296 relocation. If an external relocation corresponds to more than
297 one internal relocation, then all relocations are swapped in at
299 void (*swap_reloc_in
)
300 PARAMS ((bfd
*, const bfd_byte
*, Elf_Internal_Rel
*));
302 /* This function, if defined, is called to swap out a REL
304 void (*swap_reloc_out
)
305 PARAMS ((bfd
*, const Elf_Internal_Rel
*, bfd_byte
*));
307 /* This function, if defined, is called to swap in a RELA
308 relocation. If an external relocation corresponds to more than
309 one internal relocation, then all relocations are swapped in at
311 void (*swap_reloca_in
)
312 PARAMS ((bfd
*, const bfd_byte
*, Elf_Internal_Rela
*));
314 /* This function, if defined, is called to swap out a RELA
316 void (*swap_reloca_out
)
317 PARAMS ((bfd
*, const Elf_Internal_Rela
*, bfd_byte
*));
321 #define elf_symbol_from(ABFD,S) \
322 (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
323 && (S)->the_bfd->tdata.elf_obj_data != 0) \
324 ? (elf_symbol_type *) (S) \
327 struct elf_backend_data
329 /* The architecture for this backend. */
330 enum bfd_architecture arch
;
332 /* The ELF machine code (EM_xxxx) for this backend. */
333 int elf_machine_code
;
335 /* The maximum page size for this backend. */
338 /* A function to translate an ELF RELA relocation to a BFD arelent
340 void (*elf_info_to_howto
) PARAMS ((bfd
*, arelent
*,
341 Elf_Internal_Rela
*));
343 /* A function to translate an ELF REL relocation to a BFD arelent
345 void (*elf_info_to_howto_rel
) PARAMS ((bfd
*, arelent
*,
346 Elf_Internal_Rel
*));
348 /* A function to determine whether a symbol is global when
349 partitioning the symbol table into local and global symbols.
350 This should be NULL for most targets, in which case the correct
351 thing will be done. MIPS ELF, at least on the Irix 5, has
352 special requirements. */
353 boolean (*elf_backend_sym_is_global
) PARAMS ((bfd
*, asymbol
*));
355 /* The remaining functions are hooks which are called only if they
358 /* A function to permit a backend specific check on whether a
359 particular BFD format is relevant for an object file, and to
360 permit the backend to set any global information it wishes. When
361 this is called elf_elfheader is set, but anything else should be
362 used with caution. If this returns false, the check_format
363 routine will return a bfd_error_wrong_format error. */
364 boolean (*elf_backend_object_p
) PARAMS ((bfd
*));
366 /* A function to do additional symbol processing when reading the
367 ELF symbol table. This is where any processor-specific special
368 section indices are handled. */
369 void (*elf_backend_symbol_processing
) PARAMS ((bfd
*, asymbol
*));
371 /* A function to do additional symbol processing after reading the
372 entire ELF symbol table. */
373 boolean (*elf_backend_symbol_table_processing
) PARAMS ((bfd
*,
377 /* A function to set the type of the info field. Processor-specific
378 types should be handled here. */
379 int (*elf_backend_get_symbol_type
) PARAMS (( Elf_Internal_Sym
*, int));
381 /* A function to do additional processing on the ELF section header
382 just before writing it out. This is used to set the flags and
383 type fields for some sections, or to actually write out data for
385 boolean (*elf_backend_section_processing
) PARAMS ((bfd
*,
386 Elf32_Internal_Shdr
*));
388 /* A function to handle unusual section types when creating BFD
389 sections from ELF sections. */
390 boolean (*elf_backend_section_from_shdr
) PARAMS ((bfd
*,
391 Elf32_Internal_Shdr
*,
394 /* A function to handle unusual program segment types when creating BFD
395 sections from ELF program segments. */
396 boolean (*elf_backend_section_from_phdr
) PARAMS ((bfd
*,
397 Elf32_Internal_Phdr
*,
400 /* A function to set up the ELF section header for a BFD section in
401 preparation for writing it out. This is where the flags and type
402 fields are set for unusual sections. */
403 boolean (*elf_backend_fake_sections
) PARAMS ((bfd
*, Elf32_Internal_Shdr
*,
406 /* A function to get the ELF section index for a BFD section. If
407 this returns true, the section was found. If it is a normal ELF
408 section, *RETVAL should be left unchanged. If it is not a normal
409 ELF section *RETVAL should be set to the SHN_xxxx index. */
410 boolean (*elf_backend_section_from_bfd_section
)
411 PARAMS ((bfd
*, Elf32_Internal_Shdr
*, asection
*, int *retval
));
413 /* If this field is not NULL, it is called by the add_symbols phase
414 of a link just before adding a symbol to the global linker hash
415 table. It may modify any of the fields as it wishes. If *NAME
416 is set to NULL, the symbol will be skipped rather than being
417 added to the hash table. This function is responsible for
418 handling all processor dependent symbol bindings and section
419 indices, and must set at least *FLAGS and *SEC for each processor
420 dependent case; failure to do so will cause a link error. */
421 boolean (*elf_add_symbol_hook
)
422 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
,
423 const Elf_Internal_Sym
*, const char **name
,
424 flagword
*flags
, asection
**sec
, bfd_vma
*value
));
426 /* If this field is not NULL, it is called by the elf_link_output_sym
427 phase of a link for each symbol which will appear in the object file. */
428 boolean (*elf_backend_link_output_symbol_hook
)
429 PARAMS ((bfd
*, struct bfd_link_info
*info
, const char *,
430 Elf_Internal_Sym
*, asection
*));
432 /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
433 linker the first time it encounters a dynamic object in the link.
434 This function must create any sections required for dynamic
435 linking. The ABFD argument is a dynamic object. The .interp,
436 .dynamic, .dynsym, .dynstr, and .hash functions have already been
437 created, and this function may modify the section flags if
438 desired. This function will normally create the .got and .plt
439 sections, but different backends have different requirements. */
440 boolean (*elf_backend_create_dynamic_sections
)
441 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
443 /* The CHECK_RELOCS function is called by the add_symbols phase of
444 the ELF backend linker. It is called once for each section with
445 relocs of an object file, just after the symbols for the object
446 file have been added to the global linker hash table. The
447 function must look through the relocs and do any special handling
448 required. This generally means allocating space in the global
449 offset table, and perhaps allocating space for a reloc. The
450 relocs are always passed as Rela structures; if the section
451 actually uses Rel structures, the r_addend field will always be
453 boolean (*check_relocs
)
454 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
455 const Elf_Internal_Rela
*relocs
));
457 /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
458 linker for every symbol which is defined by a dynamic object and
459 referenced by a regular object. This is called after all the
460 input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
461 function has been called. The hash table entry should be
462 bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
463 defined in a section from a dynamic object. Dynamic object
464 sections are not included in the final link, and this function is
465 responsible for changing the value to something which the rest of
466 the link can deal with. This will normally involve adding an
467 entry to the .plt or .got or some such section, and setting the
468 symbol to point to that. */
469 boolean (*elf_backend_adjust_dynamic_symbol
)
470 PARAMS ((struct bfd_link_info
*info
, struct elf_link_hash_entry
*h
));
472 /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
473 after all the linker input files have been seen but before the
474 section sizes have been set. This is called after
475 ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */
476 boolean (*elf_backend_always_size_sections
)
477 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
));
479 /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
480 linker after all the linker input files have been seen but before
481 the sections sizes have been set. This is called after
482 ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
483 It is only called when linking against a dynamic object. It must
484 set the sizes of the dynamic sections, and may fill in their
485 contents as well. The generic ELF linker can handle the .dynsym,
486 .dynstr and .hash sections. This function must handle the
487 .interp section and any sections created by the
488 CREATE_DYNAMIC_SECTIONS entry point. */
489 boolean (*elf_backend_size_dynamic_sections
)
490 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
));
492 /* The RELOCATE_SECTION function is called by the ELF backend linker
493 to handle the relocations for a section.
495 The relocs are always passed as Rela structures; if the section
496 actually uses Rel structures, the r_addend field will always be
499 This function is responsible for adjust the section contents as
500 necessary, and (if using Rela relocs and generating a
501 relocateable output file) adjusting the reloc addend as
504 This function does not have to worry about setting the reloc
505 address or the reloc symbol index.
507 LOCAL_SYMS is a pointer to the swapped in local symbols.
509 LOCAL_SECTIONS is an array giving the section in the input file
510 corresponding to the st_shndx field of each local symbol.
512 The global hash table entry for the global symbols can be found
513 via elf_sym_hashes (input_bfd).
515 When generating relocateable output, this function must handle
516 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
517 going to be the section symbol corresponding to the output
518 section, which means that the addend must be adjusted
520 boolean (*elf_backend_relocate_section
)
521 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
,
522 bfd
*input_bfd
, asection
*input_section
, bfd_byte
*contents
,
523 Elf_Internal_Rela
*relocs
, Elf_Internal_Sym
*local_syms
,
524 asection
**local_sections
));
526 /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
527 linker just before it writes a symbol out to the .dynsym section.
528 The processor backend may make any required adjustment to the
529 symbol. It may also take the opportunity to set contents of the
530 dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
531 all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
532 on those symbols which are defined by a dynamic object. */
533 boolean (*elf_backend_finish_dynamic_symbol
)
534 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
,
535 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*sym
));
537 /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
538 linker just before it writes all the dynamic sections out to the
539 output file. The FINISH_DYNAMIC_SYMBOL will have been called on
540 all dynamic symbols. */
541 boolean (*elf_backend_finish_dynamic_sections
)
542 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
));
544 /* A function to do any beginning processing needed for the ELF file
545 before building the ELF headers and computing file positions. */
546 void (*elf_backend_begin_write_processing
)
547 PARAMS ((bfd
*, struct bfd_link_info
*));
549 /* A function to do any final processing needed for the ELF file
550 before writing it out. The LINKER argument is true if this BFD
551 was created by the ELF backend linker. */
552 void (*elf_backend_final_write_processing
)
553 PARAMS ((bfd
*, boolean linker
));
555 /* This function is called by get_program_header_size. It should
556 return the number of additional program segments which this BFD
557 will need. It should return -1 on error. */
558 int (*elf_backend_additional_program_headers
) PARAMS ((bfd
*));
560 /* This function is called to modify an existing segment map in a
561 backend specific fashion. */
562 boolean (*elf_backend_modify_segment_map
) PARAMS ((bfd
*));
564 /* This function is called during section gc to discover the section a
565 particular relocation refers to. It need not be defined for hosts
566 that have no queer relocation types. */
567 asection
* (*gc_mark_hook
)
568 PARAMS ((bfd
*abfd
, struct bfd_link_info
*, Elf_Internal_Rela
*,
569 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*));
571 /* This function, if defined, is called during the sweep phase of gc
572 in order that a backend might update any data structures it might
574 boolean (*gc_sweep_hook
)
575 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
576 const Elf_Internal_Rela
*relocs
));
578 /* This function, if defined, is called after the ELF headers have
579 been created. This allows for things like the OS and ABI versions
581 void (*elf_backend_post_process_headers
)
582 PARAMS ((bfd
*, struct bfd_link_info
*));
584 /* This function, if defined, prints a symbol to file and returns the
585 name of the symbol to be printed. It should return NULL to fall
586 back to default symbol printing. */
587 const char *(*elf_backend_print_symbol_all
)
588 PARAMS ((bfd
*, PTR
, asymbol
*));
590 /* This function, if defined, is called after all local symbols and
591 global symbols converted to locals are emited into the symtab
592 section. It allows the backend to emit special global symbols
593 not handled in the hash table. */
594 boolean (*elf_backend_output_arch_syms
)
595 PARAMS ((bfd
*, struct bfd_link_info
*, PTR
,
596 boolean (*) PARAMS ((PTR
, const char *,
597 Elf_Internal_Sym
*, asection
*))));
599 /* Copy any information related to dynamic linking from a pre-existing
600 symbol IND to a newly created symbol DIR. */
601 void (*elf_backend_copy_indirect_symbol
)
602 PARAMS ((struct elf_link_hash_entry
*, struct elf_link_hash_entry
*));
604 /* Modify any information related to dynamic linking such that the
605 symbol is not exported. */
606 void (*elf_backend_hide_symbol
)
607 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
609 /* The swapping table to use when dealing with ECOFF information.
610 Used for the MIPS ELF .mdebug section. */
611 const struct ecoff_debug_swap
*elf_backend_ecoff_debug_swap
;
613 /* Alternate EM_xxxx machine codes for this backend. */
614 int elf_machine_alt1
;
615 int elf_machine_alt2
;
617 const struct elf_size_info
*s
;
619 /* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the
621 bfd_vma got_symbol_offset
;
623 /* The size in bytes of the headers for the GOT and PLT. This includes
624 the so-called reserved entries on some systems. */
625 bfd_vma got_header_size
;
626 bfd_vma plt_header_size
;
628 /* This is true if the linker should act like collect and gather
629 global constructors and destructors by name. This is true for
630 MIPS ELF because the Irix 5 tools can not handle the .init
632 unsigned collect
: 1;
634 /* This is true if the linker should ignore changes to the type of a
635 symbol. This is true for MIPS ELF because some Irix 5 objects
636 record undefined functions as STT_OBJECT although the definitions
638 unsigned type_change_ok
: 1;
640 /* Whether the backend may use REL relocations. (Some backends use
641 both REL and RELA relocations, and this flag is set for those
643 unsigned may_use_rel_p
: 1;
645 /* Whether the backend may use RELA relocations. (Some backends use
646 both REL and RELA relocations, and this flag is set for those
648 unsigned may_use_rela_p
: 1;
650 /* Whether the default relocation type is RELA. If a backend with
651 this flag set wants REL relocations for a particular section,
652 it must note that explicitly. Similarly, if this flag is clear,
653 and the backend wants RELA relocations for a particular
655 unsigned default_use_rela_p
: 1;
657 /* True if addresses "naturally" sign extend. This is used when
658 swapping in from Elf32 when BFD64. */
659 unsigned sign_extend_vma
: 1;
661 unsigned want_got_plt
: 1;
662 unsigned plt_readonly
: 1;
663 unsigned want_plt_sym
: 1;
664 unsigned plt_not_loaded
: 1;
665 unsigned plt_alignment
: 4;
666 unsigned can_gc_sections
: 1;
667 unsigned want_dynbss
: 1;
670 /* Information stored for each BFD section in an ELF file. This
671 structure is allocated by elf_new_section_hook. */
673 struct bfd_elf_section_data
675 /* The ELF header for this section. */
676 Elf_Internal_Shdr this_hdr
;
677 /* The ELF header for the reloc section associated with this
679 Elf_Internal_Shdr rel_hdr
;
680 /* If there is a second reloc section associated with this section,
681 as can happen on Irix 6, this field points to the header. */
682 Elf_Internal_Shdr
*rel_hdr2
;
683 /* The number of relocations currently assigned to REL_HDR. */
684 unsigned int rel_count
;
685 /* The number of relocations currently assigned to REL_HDR2. */
686 unsigned int rel_count2
;
687 /* The ELF section number of this section. Only used for an output
690 /* The ELF section number of the reloc section indicated by
691 REL_HDR if any. Only used for an output file. */
693 /* The ELF section number of the reloc section indicated by
694 REL_HDR2 if any. Only used for an output file. */
696 /* Used by the backend linker to store the symbol hash table entries
697 associated with relocs against global symbols. */
698 struct elf_link_hash_entry
**rel_hashes
;
699 /* A pointer to the swapped relocs. If the section uses REL relocs,
700 rather than RELA, all the r_addend fields will be zero. This
701 pointer may be NULL. It is used by the backend linker. */
702 Elf_Internal_Rela
*relocs
;
703 /* Used by the backend linker when generating a shared library to
704 record the dynamic symbol index for a section symbol
705 corresponding to this section. A value of 0 means that there is
706 no dynamic symbol for this section. */
708 /* A pointer used for .stab linking optimizations. */
710 /* A pointer available for the processor specific ELF backend. */
712 /* Nonzero if this section uses RELA relocations, rather than REL. */
713 unsigned int use_rela_p
:1;
716 #define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd)
718 #define get_elf_backend_data(abfd) \
719 ((struct elf_backend_data *) (abfd)->xvec->backend_data)
721 /* Enumeration to specify the special section. */
722 typedef enum elf_linker_section_enum
724 LINKER_SECTION_UNKNOWN
, /* not used */
725 LINKER_SECTION_GOT
, /* .got section for global offset pointers */
726 LINKER_SECTION_PLT
, /* .plt section for generated procedure stubs */
727 LINKER_SECTION_SDATA
, /* .sdata/.sbss section for PowerPC */
728 LINKER_SECTION_SDATA2
, /* .sdata2/.sbss2 section for PowerPC */
729 LINKER_SECTION_MAX
/* # of linker sections */
730 } elf_linker_section_enum_t
;
732 /* Sections created by the linker. */
734 typedef struct elf_linker_section
736 char *name
; /* name of the section */
737 char *rel_name
; /* name of the associated .rel{,a}. section */
738 char *bss_name
; /* name of a related .bss section */
739 char *sym_name
; /* name of symbol to reference this section */
740 asection
*section
; /* pointer to the section */
741 asection
*bss_section
; /* pointer to the bss section associated with this */
742 asection
*rel_section
; /* pointer to the relocations needed for this section */
743 struct elf_link_hash_entry
*sym_hash
; /* pointer to the created symbol hash value */
744 bfd_vma initial_size
; /* initial size before any linker generated allocations */
745 bfd_vma sym_offset
; /* offset of symbol from beginning of section */
746 bfd_vma hole_size
; /* size of reserved address hole in allocation */
747 bfd_vma hole_offset
; /* current offset for the hole */
748 bfd_vma max_hole_offset
; /* maximum offset for the hole */
749 elf_linker_section_enum_t which
; /* which section this is */
750 boolean hole_written_p
; /* whether the hole has been initialized */
751 unsigned int alignment
; /* alignment for the section */
752 flagword flags
; /* flags to use to create the section */
753 } elf_linker_section_t
;
755 /* Linked list of allocated pointer entries. This hangs off of the symbol lists, and
756 provides allows us to return different pointers, based on different addend's. */
758 typedef struct elf_linker_section_pointers
760 struct elf_linker_section_pointers
*next
; /* next allocated pointer for this symbol */
761 bfd_vma offset
; /* offset of pointer from beginning of section */
762 bfd_signed_vma addend
; /* addend used */
763 elf_linker_section_enum_t which
; /* which linker section this is */
764 boolean written_address_p
; /* whether address was written yet */
765 } elf_linker_section_pointers_t
;
767 /* Some private data is stashed away for future use using the tdata pointer
768 in the bfd structure. */
772 Elf_Internal_Ehdr elf_header
[1]; /* Actual data, but ref like ptr */
773 Elf_Internal_Shdr
**elf_sect_ptr
;
774 Elf_Internal_Phdr
*phdr
;
775 struct elf_segment_map
*segment_map
;
776 struct bfd_strtab_hash
*strtab_ptr
;
779 asymbol
**section_syms
; /* STT_SECTION symbols for each section */
780 Elf_Internal_Shdr symtab_hdr
;
781 Elf_Internal_Shdr shstrtab_hdr
;
782 Elf_Internal_Shdr strtab_hdr
;
783 Elf_Internal_Shdr dynsymtab_hdr
;
784 Elf_Internal_Shdr dynstrtab_hdr
;
785 Elf_Internal_Shdr dynversym_hdr
;
786 Elf_Internal_Shdr dynverref_hdr
;
787 Elf_Internal_Shdr dynverdef_hdr
;
788 unsigned int symtab_section
, shstrtab_section
;
789 unsigned int strtab_section
, dynsymtab_section
;
790 unsigned int dynversym_section
, dynverdef_section
, dynverref_section
;
791 file_ptr next_file_pos
;
793 /* we don't need these inside bfd anymore, and I think
794 these weren't used outside bfd. */
795 void *prstatus
; /* The raw /proc prstatus structure */
796 void *prpsinfo
; /* The raw /proc prpsinfo structure */
798 bfd_vma gp
; /* The gp value (MIPS only, for now) */
799 unsigned int gp_size
; /* The gp size (MIPS only, for now) */
801 /* Information grabbed from an elf core file. */
808 /* This is set to true if the object was created by the backend
812 /* A mapping from external symbols to entries in the linker hash
813 table, used when linking. This is indexed by the symbol index
814 minus the sh_info field of the symbol table header. */
815 struct elf_link_hash_entry
**sym_hashes
;
817 /* A mapping from local symbols to offsets into the global offset
818 table, used when linking. This is indexed by the symbol index.
819 Like for the globals, we use a union and two names primarily to
820 document the intent of any particular piece of code. The field
821 should be used as a count until size_dynamic_sections, at which
822 point the contents of the .got is fixed. Afterward, if an entry
823 is -1, then the symbol does not require a global offset table entry. */
826 bfd_signed_vma
*refcounts
;
830 /* A mapping from local symbols to offsets into the various linker
831 sections added. This is index by the symbol index. */
832 elf_linker_section_pointers_t
**linker_section_pointers
;
834 /* The linker ELF emulation code needs to let the backend ELF linker
835 know what filename should be used for a dynamic object if the
836 dynamic object is found using a search. The emulation code then
837 sometimes needs to know what name was actually used. Until the
838 file has been added to the linker symbol table, this field holds
839 the name the linker wants. After it has been added, it holds the
840 name actually used, which will be the DT_SONAME entry if there is
844 /* When a reference in a regular object is resolved by a shared
845 object is loaded into via the DT_NEEDED entries by the linker
846 ELF emulation code, we need to add the shared object to the
847 DT_NEEDED list of the resulting binary to indicate the dependency
848 as if the -l option is passed to the linker. This field holds the
849 name of the loaded shared object. */
850 const char *dt_soname
;
852 /* Irix 5 often screws up the symbol table, sorting local symbols
853 after global symbols. This flag is set if the symbol table in
854 this BFD appears to be screwed up. If it is, we ignore the
855 sh_info field in the symbol table header, and always read all the
859 /* Records the result of `get_program_header_size'. */
860 bfd_size_type program_header_size
;
862 /* Used by find_nearest_line entry point. */
865 /* Used by MIPS ELF find_nearest_line entry point. The structure
866 could be included directly in this one, but there's no point to
867 wasting the memory just for the infrequently called
868 find_nearest_line. */
869 struct mips_elf_find_line
*find_line_info
;
871 /* A place to stash dwarf1 info for this bfd. */
872 struct dwarf1_debug
*dwarf1_find_line_info
;
874 /* A place to stash dwarf2 info for this bfd. */
875 struct dwarf2_debug
*dwarf2_find_line_info
;
877 /* An array of stub sections indexed by symbol number, used by the
878 MIPS ELF linker. FIXME: We should figure out some way to only
879 include this field for a MIPS ELF target. */
880 asection
**local_stubs
;
882 /* Used to determine if the e_flags field has been initialized */
885 /* Number of symbol version definitions we are about to emit. */
886 unsigned int cverdefs
;
888 /* Number of symbol version references we are about to emit. */
889 unsigned int cverrefs
;
891 /* Symbol version definitions in external objects. */
892 Elf_Internal_Verdef
*verdef
;
894 /* Symbol version references to external objects. */
895 Elf_Internal_Verneed
*verref
;
897 /* Linker sections that we are interested in. */
898 struct elf_linker_section
*linker_section
[ (int)LINKER_SECTION_MAX
];
900 /* The Irix 5 support uses two virtual sections, which represent
901 text/data symbols defined in dynamic objects. */
902 asymbol
*elf_data_symbol
;
903 asymbol
*elf_text_symbol
;
904 asection
*elf_data_section
;
905 asection
*elf_text_section
;
908 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
909 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
910 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
911 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr)
912 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
913 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
914 #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
915 #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
916 #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
917 #define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals)
918 #define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals)
919 #define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms)
920 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
921 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
922 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
923 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
924 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
925 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
926 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
927 #define elf_local_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers)
928 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
929 #define elf_dt_soname(bfd) (elf_tdata(bfd) -> dt_soname)
930 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
931 #define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init)
932 #define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n])
934 extern void _bfd_elf_swap_verdef_in
935 PARAMS ((bfd
*, const Elf_External_Verdef
*, Elf_Internal_Verdef
*));
936 extern void _bfd_elf_swap_verdef_out
937 PARAMS ((bfd
*, const Elf_Internal_Verdef
*, Elf_External_Verdef
*));
938 extern void _bfd_elf_swap_verdaux_in
939 PARAMS ((bfd
*, const Elf_External_Verdaux
*, Elf_Internal_Verdaux
*));
940 extern void _bfd_elf_swap_verdaux_out
941 PARAMS ((bfd
*, const Elf_Internal_Verdaux
*, Elf_External_Verdaux
*));
942 extern void _bfd_elf_swap_verneed_in
943 PARAMS ((bfd
*, const Elf_External_Verneed
*, Elf_Internal_Verneed
*));
944 extern void _bfd_elf_swap_verneed_out
945 PARAMS ((bfd
*, const Elf_Internal_Verneed
*, Elf_External_Verneed
*));
946 extern void _bfd_elf_swap_vernaux_in
947 PARAMS ((bfd
*, const Elf_External_Vernaux
*, Elf_Internal_Vernaux
*));
948 extern void _bfd_elf_swap_vernaux_out
949 PARAMS ((bfd
*, const Elf_Internal_Vernaux
*, Elf_External_Vernaux
*));
950 extern void _bfd_elf_swap_versym_in
951 PARAMS ((bfd
*, const Elf_External_Versym
*, Elf_Internal_Versym
*));
952 extern void _bfd_elf_swap_versym_out
953 PARAMS ((bfd
*, const Elf_Internal_Versym
*, Elf_External_Versym
*));
955 extern int _bfd_elf_section_from_bfd_section
PARAMS ((bfd
*, asection
*));
956 extern char *bfd_elf_string_from_elf_section
957 PARAMS ((bfd
*, unsigned, unsigned));
958 extern char *bfd_elf_get_str_section
PARAMS ((bfd
*, unsigned));
960 extern boolean _bfd_elf_print_private_bfd_data
PARAMS ((bfd
*, PTR
));
961 extern void bfd_elf_print_symbol
PARAMS ((bfd
*, PTR
, asymbol
*,
962 bfd_print_symbol_type
));
963 #define elf_string_from_elf_strtab(abfd,strindex) \
964 bfd_elf_string_from_elf_section(abfd,elf_elfheader(abfd)->e_shstrndx,strindex)
966 #define bfd_elf32_print_symbol bfd_elf_print_symbol
967 #define bfd_elf64_print_symbol bfd_elf_print_symbol
969 extern unsigned long bfd_elf_hash
PARAMS ((const char *));
971 extern bfd_reloc_status_type bfd_elf_generic_reloc
PARAMS ((bfd
*,
978 extern boolean bfd_elf_mkobject
PARAMS ((bfd
*));
979 extern boolean bfd_elf_mkcorefile
PARAMS ((bfd
*));
980 extern Elf_Internal_Shdr
*bfd_elf_find_section
PARAMS ((bfd
*, char *));
981 extern boolean _bfd_elf_make_section_from_shdr
982 PARAMS ((bfd
*abfd
, Elf_Internal_Shdr
*hdr
, const char *name
));
983 extern boolean _bfd_elf_make_section_from_phdr
984 PARAMS ((bfd
*abfd
, Elf_Internal_Phdr
*hdr
, int index
, const char *typename
));
985 extern struct bfd_hash_entry
*_bfd_elf_link_hash_newfunc
986 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
987 extern struct bfd_link_hash_table
*_bfd_elf_link_hash_table_create
989 extern void _bfd_elf_link_hash_copy_indirect
990 PARAMS ((struct elf_link_hash_entry
*, struct elf_link_hash_entry
*));
991 extern void _bfd_elf_link_hash_hide_symbol
992 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
993 extern boolean _bfd_elf_link_hash_table_init
994 PARAMS ((struct elf_link_hash_table
*, bfd
*,
995 struct bfd_hash_entry
*(*) (struct bfd_hash_entry
*,
996 struct bfd_hash_table
*,
998 extern boolean _bfd_elf_slurp_version_tables
PARAMS ((bfd
*));
1000 extern boolean _bfd_elf_copy_private_symbol_data
1001 PARAMS ((bfd
*, asymbol
*, bfd
*, asymbol
*));
1002 extern boolean _bfd_elf_copy_private_section_data
1003 PARAMS ((bfd
*, asection
*, bfd
*, asection
*));
1004 extern boolean _bfd_elf_write_object_contents
PARAMS ((bfd
*));
1005 extern boolean _bfd_elf_write_corefile_contents
PARAMS ((bfd
*));
1006 extern boolean _bfd_elf_set_section_contents
PARAMS ((bfd
*, sec_ptr
, PTR
,
1009 extern long _bfd_elf_get_symtab_upper_bound
PARAMS ((bfd
*));
1010 extern long _bfd_elf_get_symtab
PARAMS ((bfd
*, asymbol
**));
1011 extern long _bfd_elf_get_dynamic_symtab_upper_bound
PARAMS ((bfd
*));
1012 extern long _bfd_elf_canonicalize_dynamic_symtab
PARAMS ((bfd
*, asymbol
**));
1013 extern long _bfd_elf_get_reloc_upper_bound
PARAMS ((bfd
*, sec_ptr
));
1014 extern long _bfd_elf_canonicalize_reloc
PARAMS ((bfd
*, sec_ptr
,
1015 arelent
**, asymbol
**));
1016 extern long _bfd_elf_get_dynamic_reloc_upper_bound
PARAMS ((bfd
*));
1017 extern long _bfd_elf_canonicalize_dynamic_reloc
PARAMS ((bfd
*, arelent
**,
1019 extern asymbol
*_bfd_elf_make_empty_symbol
PARAMS ((bfd
*));
1020 extern void _bfd_elf_get_symbol_info
PARAMS ((bfd
*, asymbol
*,
1022 extern boolean _bfd_elf_is_local_label_name
PARAMS ((bfd
*, const char *));
1023 extern alent
*_bfd_elf_get_lineno
PARAMS ((bfd
*, asymbol
*));
1024 extern boolean _bfd_elf_set_arch_mach
PARAMS ((bfd
*, enum bfd_architecture
,
1026 extern boolean _bfd_elf_find_nearest_line
PARAMS ((bfd
*, asection
*,
1028 bfd_vma
, const char **,
1031 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
1032 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
1033 extern int _bfd_elf_sizeof_headers
PARAMS ((bfd
*, boolean
));
1034 extern boolean _bfd_elf_new_section_hook
PARAMS ((bfd
*, asection
*));
1035 extern boolean _bfd_elf_init_reloc_shdr
1036 PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*, boolean
));
1038 /* If the target doesn't have reloc handling written yet: */
1039 extern void _bfd_elf_no_info_to_howto
PARAMS ((bfd
*, arelent
*,
1040 Elf_Internal_Rela
*));
1042 extern boolean bfd_section_from_shdr
PARAMS ((bfd
*, unsigned int shindex
));
1043 extern boolean bfd_section_from_phdr
PARAMS ((bfd
*, Elf_Internal_Phdr
*, int));
1045 extern int _bfd_elf_symbol_from_bfd_symbol
PARAMS ((bfd
*, asymbol
**));
1047 asection
*bfd_section_from_elf_index
PARAMS ((bfd
*, unsigned int));
1048 boolean _bfd_elf_create_dynamic_sections
PARAMS ((bfd
*,
1049 struct bfd_link_info
*));
1050 struct bfd_strtab_hash
*_bfd_elf_stringtab_init
PARAMS ((void));
1052 _bfd_elf_link_record_dynamic_symbol
PARAMS ((struct bfd_link_info
*,
1053 struct elf_link_hash_entry
*));
1055 _bfd_elf_link_lookup_local_dynindx
PARAMS ((struct bfd_link_info
*,
1058 _bfd_elf_compute_section_file_positions
PARAMS ((bfd
*,
1059 struct bfd_link_info
*));
1060 void _bfd_elf_assign_file_positions_for_relocs
PARAMS ((bfd
*));
1061 file_ptr _bfd_elf_assign_file_position_for_section
PARAMS ((Elf_Internal_Shdr
*,
1065 extern boolean _bfd_elf_validate_reloc
PARAMS ((bfd
*, arelent
*));
1067 boolean _bfd_elf_create_dynamic_sections
PARAMS ((bfd
*,
1068 struct bfd_link_info
*));
1069 boolean _bfd_elf_create_got_section
PARAMS ((bfd
*,
1070 struct bfd_link_info
*));
1071 unsigned long _bfd_elf_link_renumber_dynsyms
PARAMS ((bfd
*,
1072 struct bfd_link_info
*));
1074 elf_linker_section_t
*_bfd_elf_create_linker_section
1076 struct bfd_link_info
*info
,
1077 enum elf_linker_section_enum
,
1078 elf_linker_section_t
*defaults
));
1080 elf_linker_section_pointers_t
*_bfd_elf_find_pointer_linker_section
1081 PARAMS ((elf_linker_section_pointers_t
*linker_pointers
,
1082 bfd_signed_vma addend
,
1083 elf_linker_section_enum_t which
));
1085 boolean bfd_elf32_create_pointer_linker_section
1087 struct bfd_link_info
*info
,
1088 elf_linker_section_t
*lsect
,
1089 struct elf_link_hash_entry
*h
,
1090 const Elf32_Internal_Rela
*rel
));
1092 bfd_vma bfd_elf32_finish_pointer_linker_section
1093 PARAMS ((bfd
*output_abfd
,
1095 struct bfd_link_info
*info
,
1096 elf_linker_section_t
*lsect
,
1097 struct elf_link_hash_entry
*h
,
1099 const Elf32_Internal_Rela
*rel
,
1100 int relative_reloc
));
1102 boolean bfd_elf64_create_pointer_linker_section
1104 struct bfd_link_info
*info
,
1105 elf_linker_section_t
*lsect
,
1106 struct elf_link_hash_entry
*h
,
1107 const Elf64_Internal_Rela
*rel
));
1109 bfd_vma bfd_elf64_finish_pointer_linker_section
1110 PARAMS ((bfd
*output_abfd
,
1112 struct bfd_link_info
*info
,
1113 elf_linker_section_t
*lsect
,
1114 struct elf_link_hash_entry
*h
,
1116 const Elf64_Internal_Rela
*rel
,
1117 int relative_reloc
));
1119 boolean _bfd_elf_make_linker_section_rela
1120 PARAMS ((bfd
*dynobj
,
1121 elf_linker_section_t
*lsect
,
1124 boolean _bfd_elfcore_section_from_phdr
1125 PARAMS ((bfd
*, Elf_Internal_Phdr
*, int));
1127 extern const bfd_target
*bfd_elf32_object_p
PARAMS ((bfd
*));
1128 extern const bfd_target
*bfd_elf32_core_file_p
PARAMS ((bfd
*));
1129 extern char *bfd_elf32_core_file_failing_command
PARAMS ((bfd
*));
1130 extern int bfd_elf32_core_file_failing_signal
PARAMS ((bfd
*));
1131 extern boolean bfd_elf32_core_file_matches_executable_p
PARAMS ((bfd
*,
1134 extern boolean bfd_elf32_bfd_link_add_symbols
1135 PARAMS ((bfd
*, struct bfd_link_info
*));
1136 extern boolean bfd_elf32_bfd_final_link
1137 PARAMS ((bfd
*, struct bfd_link_info
*));
1139 extern void bfd_elf32_swap_symbol_in
1140 PARAMS ((bfd
*, const Elf32_External_Sym
*, Elf_Internal_Sym
*));
1141 extern void bfd_elf32_swap_symbol_out
1142 PARAMS ((bfd
*, const Elf_Internal_Sym
*, PTR
));
1143 extern void bfd_elf32_swap_reloc_in
1144 PARAMS ((bfd
*, const Elf32_External_Rel
*, Elf_Internal_Rel
*));
1145 extern void bfd_elf32_swap_reloc_out
1146 PARAMS ((bfd
*, const Elf_Internal_Rel
*, Elf32_External_Rel
*));
1147 extern void bfd_elf32_swap_reloca_in
1148 PARAMS ((bfd
*, const Elf32_External_Rela
*, Elf_Internal_Rela
*));
1149 extern void bfd_elf32_swap_reloca_out
1150 PARAMS ((bfd
*, const Elf_Internal_Rela
*, Elf32_External_Rela
*));
1151 extern void bfd_elf32_swap_phdr_in
1152 PARAMS ((bfd
*, const Elf32_External_Phdr
*, Elf_Internal_Phdr
*));
1153 extern void bfd_elf32_swap_phdr_out
1154 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, Elf32_External_Phdr
*));
1155 extern void bfd_elf32_swap_dyn_in
1156 PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1157 extern void bfd_elf32_swap_dyn_out
1158 PARAMS ((bfd
*, const Elf_Internal_Dyn
*, PTR
));
1159 extern long bfd_elf32_slurp_symbol_table
1160 PARAMS ((bfd
*, asymbol
**, boolean
));
1161 extern boolean bfd_elf32_write_shdrs_and_ehdr
PARAMS ((bfd
*));
1162 extern int bfd_elf32_write_out_phdrs
1163 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, int));
1164 extern void bfd_elf32_write_relocs
1165 PARAMS ((bfd
*, asection
*, PTR
));
1166 extern boolean bfd_elf32_slurp_reloc_table
1167 PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
1168 extern boolean bfd_elf32_add_dynamic_entry
1169 PARAMS ((struct bfd_link_info
*, bfd_vma
, bfd_vma
));
1170 extern boolean bfd_elf32_link_create_dynamic_sections
1171 PARAMS ((bfd
*, struct bfd_link_info
*));
1172 extern Elf_Internal_Rela
*_bfd_elf32_link_read_relocs
1173 PARAMS ((bfd
*, asection
*, PTR
, Elf_Internal_Rela
*, boolean
));
1175 extern const bfd_target
*bfd_elf64_object_p
PARAMS ((bfd
*));
1176 extern const bfd_target
*bfd_elf64_core_file_p
PARAMS ((bfd
*));
1177 extern char *bfd_elf64_core_file_failing_command
PARAMS ((bfd
*));
1178 extern int bfd_elf64_core_file_failing_signal
PARAMS ((bfd
*));
1179 extern boolean bfd_elf64_core_file_matches_executable_p
PARAMS ((bfd
*,
1181 extern boolean bfd_elf64_bfd_link_add_symbols
1182 PARAMS ((bfd
*, struct bfd_link_info
*));
1183 extern boolean bfd_elf64_bfd_final_link
1184 PARAMS ((bfd
*, struct bfd_link_info
*));
1186 extern void bfd_elf64_swap_symbol_in
1187 PARAMS ((bfd
*, const Elf64_External_Sym
*, Elf_Internal_Sym
*));
1188 extern void bfd_elf64_swap_symbol_out
1189 PARAMS ((bfd
*, const Elf_Internal_Sym
*, PTR
));
1190 extern void bfd_elf64_swap_reloc_in
1191 PARAMS ((bfd
*, const Elf64_External_Rel
*, Elf_Internal_Rel
*));
1192 extern void bfd_elf64_swap_reloc_out
1193 PARAMS ((bfd
*, const Elf_Internal_Rel
*, Elf64_External_Rel
*));
1194 extern void bfd_elf64_swap_reloca_in
1195 PARAMS ((bfd
*, const Elf64_External_Rela
*, Elf_Internal_Rela
*));
1196 extern void bfd_elf64_swap_reloca_out
1197 PARAMS ((bfd
*, const Elf_Internal_Rela
*, Elf64_External_Rela
*));
1198 extern void bfd_elf64_swap_phdr_in
1199 PARAMS ((bfd
*, const Elf64_External_Phdr
*, Elf_Internal_Phdr
*));
1200 extern void bfd_elf64_swap_phdr_out
1201 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, Elf64_External_Phdr
*));
1202 extern void bfd_elf64_swap_dyn_in
1203 PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1204 extern void bfd_elf64_swap_dyn_out
1205 PARAMS ((bfd
*, const Elf_Internal_Dyn
*, PTR
));
1206 extern long bfd_elf64_slurp_symbol_table
1207 PARAMS ((bfd
*, asymbol
**, boolean
));
1208 extern boolean bfd_elf64_write_shdrs_and_ehdr
PARAMS ((bfd
*));
1209 extern int bfd_elf64_write_out_phdrs
1210 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, int));
1211 extern void bfd_elf64_write_relocs
1212 PARAMS ((bfd
*, asection
*, PTR
));
1213 extern boolean bfd_elf64_slurp_reloc_table
1214 PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
1215 extern boolean bfd_elf64_add_dynamic_entry
1216 PARAMS ((struct bfd_link_info
*, bfd_vma
, bfd_vma
));
1217 extern boolean bfd_elf64_link_create_dynamic_sections
1218 PARAMS ((bfd
*, struct bfd_link_info
*));
1219 extern Elf_Internal_Rela
*_bfd_elf64_link_read_relocs
1220 PARAMS ((bfd
*, asection
*, PTR
, Elf_Internal_Rela
*, boolean
));
1222 #define bfd_elf32_link_record_dynamic_symbol \
1223 _bfd_elf_link_record_dynamic_symbol
1224 #define bfd_elf64_link_record_dynamic_symbol \
1225 _bfd_elf_link_record_dynamic_symbol
1227 boolean _bfd_elf32_link_record_local_dynamic_symbol
1228 PARAMS ((struct bfd_link_info
*, bfd
*, long));
1229 boolean _bfd_elf64_link_record_local_dynamic_symbol
1230 PARAMS ((struct bfd_link_info
*, bfd
*, long));
1232 extern boolean _bfd_elf_close_and_cleanup
PARAMS ((bfd
*));
1233 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
1234 PARAMS ((bfd
*, arelent
*, struct symbol_cache_entry
*, PTR
,
1235 asection
*, bfd
*, char **));
1237 boolean _bfd_elf32_gc_sections
1238 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1239 boolean _bfd_elf32_gc_common_finalize_got_offsets
1240 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1241 boolean _bfd_elf32_gc_common_final_link
1242 PARAMS ((bfd
*, struct bfd_link_info
*));
1243 boolean _bfd_elf32_gc_record_vtinherit
1244 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1245 boolean _bfd_elf32_gc_record_vtentry
1246 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1248 boolean _bfd_elf64_gc_sections
1249 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1250 boolean _bfd_elf64_gc_common_finalize_got_offsets
1251 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1252 boolean _bfd_elf64_gc_common_final_link
1253 PARAMS ((bfd
*, struct bfd_link_info
*));
1254 boolean _bfd_elf64_gc_record_vtinherit
1255 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1256 boolean _bfd_elf64_gc_record_vtentry
1257 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1259 /* MIPS ELF specific routines. */
1261 extern boolean _bfd_mips_elf_object_p
PARAMS ((bfd
*));
1262 extern boolean _bfd_mips_elf_section_from_shdr
1263 PARAMS ((bfd
*, Elf_Internal_Shdr
*, char *));
1264 extern boolean _bfd_mips_elf_fake_sections
1265 PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*));
1266 extern boolean _bfd_mips_elf_section_from_bfd_section
1267 PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*, int *));
1268 extern boolean _bfd_mips_elf_section_processing
1269 PARAMS ((bfd
*, Elf_Internal_Shdr
*));
1270 extern void _bfd_mips_elf_symbol_processing
PARAMS ((bfd
*, asymbol
*));
1271 extern boolean _bfd_mips_elf_read_ecoff_info
1272 PARAMS ((bfd
*, asection
*, struct ecoff_debug_info
*));
1273 extern void _bfd_mips_elf_final_write_processing
PARAMS ((bfd
*, boolean
));
1274 extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc
1275 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1276 extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc
1277 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1278 extern bfd_reloc_status_type _bfd_mips_elf_gprel16_reloc
1279 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1280 extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc
1281 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1282 extern bfd_reloc_status_type _bfd_mips_elf_gprel32_reloc
1283 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1284 extern boolean _bfd_mips_elf_set_private_flags
PARAMS ((bfd
*, flagword
));
1285 extern boolean _bfd_mips_elf_copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
1286 extern boolean _bfd_mips_elf_merge_private_bfd_data
PARAMS ((bfd
*, bfd
*));
1287 extern boolean _bfd_mips_elf_find_nearest_line
1288 PARAMS ((bfd
*, asection
*, asymbol
**, bfd_vma
, const char **,
1289 const char **, unsigned int *));
1290 extern boolean _bfd_mips_elf_set_section_contents
1291 PARAMS ((bfd
*, asection
*, PTR
, file_ptr
, bfd_size_type
));
1292 extern boolean _bfd_mips_elf_create_dynamic_sections
1293 PARAMS ((bfd
*, struct bfd_link_info
*));
1294 extern boolean _bfd_mips_elf_add_symbol_hook
1295 PARAMS ((bfd
*, struct bfd_link_info
*, const Elf_Internal_Sym
*,
1296 const char **, flagword
*, asection
**, bfd_vma
*));
1297 extern boolean _bfd_mips_elf_adjust_dynamic_symbol
1298 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
1299 extern boolean _bfd_mips_elf_finish_dynamic_symbol
1300 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
1301 Elf_Internal_Sym
*));
1302 extern boolean _bfd_mips_elf_finish_dynamic_sections
1303 PARAMS ((bfd
*, struct bfd_link_info
*));
1304 extern asection
* _bfd_mips_elf_gc_mark_hook
1305 PARAMS ((bfd
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
1306 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
1307 extern boolean _bfd_mips_elf_gc_sweep_hook
1308 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
1309 const Elf_Internal_Rela
*));
1310 extern boolean _bfd_mips_elf_always_size_sections
1311 PARAMS ((bfd
*, struct bfd_link_info
*));
1312 extern boolean _bfd_mips_elf_size_dynamic_sections
1313 PARAMS ((bfd
*, struct bfd_link_info
*));
1314 extern boolean _bfd_mips_elf_check_relocs
1315 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
1316 const Elf_Internal_Rela
*));
1317 extern struct bfd_link_hash_table
*_bfd_mips_elf_link_hash_table_create
1319 extern boolean _bfd_mips_elf_print_private_bfd_data
1320 PARAMS ((bfd
*, PTR
));
1321 extern boolean _bfd_mips_elf_link_output_symbol_hook
1322 PARAMS ((bfd
*, struct bfd_link_info
*, const char *, Elf_Internal_Sym
*,
1324 extern boolean _bfd_mips_elf_final_link
1325 PARAMS ((bfd
*, struct bfd_link_info
*));
1326 extern int _bfd_mips_elf_additional_program_headers
PARAMS ((bfd
*));
1327 extern boolean _bfd_mips_elf_modify_segment_map
PARAMS ((bfd
*));
1328 extern boolean _bfd_mips_elf_relocate_section
1329 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
1330 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
1332 /* SH ELF specific routine. */
1334 extern boolean _sh_elf_set_mach_from_flags
PARAMS ((bfd
*));
1336 #endif /* _LIBELF_H_ */