1 /* BFD back-end data structures for ELF files.
2 Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
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 /* The number of entries in a section is its size divided by the size
31 of a single entry. This is normally only applicaable to reloc and
32 symbol table sections. */
33 #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_size / (shdr)->sh_entsize)
35 /* If size isn't specified as 64 or 32, NAME macro should fail. */
38 #define NAME(x,y) CAT4(x,64,_,y)
41 #define NAME(x,y) CAT4(x,32,_,y)
46 #define NAME(x,y) CAT4(x,NOSIZE,_,y)
49 #define ElfNAME(X) NAME(Elf,X)
50 #define elfNAME(X) NAME(elf,X)
52 /* Information held for an ELF symbol. The first field is the
53 corresponding asymbol. Every symbol is an ELF file is actually a
54 pointer to this structure, although it is often handled as a
55 pointer to an asymbol. */
61 /* ELF symbol information. */
62 Elf_Internal_Sym internal_elf_sym
;
63 /* Backend specific information. */
66 unsigned int hppa_arg_reloc
;
72 /* Version information. This is from an Elf_Internal_Versym
73 structure in a SHT_GNU_versym section. It is zero if there is no
74 version information. */
75 unsigned short version
;
79 /* ELF linker hash table entries. */
81 struct elf_link_hash_entry
83 struct bfd_link_hash_entry root
;
85 /* Symbol index in output file. This is initialized to -1. It is
86 set to -2 if the symbol is used by a reloc. */
92 /* Symbol index as a dynamic symbol. Initialized to -1, and remains
93 -1 if this is not a dynamic symbol. */
94 /* ??? Note that this is consistently used as a synonym for tests
95 against whether we can perform various simplifying transformations
96 to the code. (E.g. changing a pc-relative jump to a PLT entry
97 into a pc-relative jump to the target function.) That test, which
98 is often relatively complex, and someplaces wrong or incomplete,
99 should really be replaced by a predicate in elflink.c.
101 End result: this field -1 does not indicate that the symbol is
102 not in the dynamic symbol table, but rather that the symbol is
103 not visible outside this DSO. */
106 /* String table index in .dynstr if this is a dynamic symbol. */
107 unsigned long dynstr_index
;
109 /* If this is a weak defined symbol from a dynamic object, this
110 field points to a defined symbol with the same value, if there is
111 one. Otherwise it is NULL. */
112 struct elf_link_hash_entry
*weakdef
;
114 /* If this symbol requires an entry in the global offset table, the
115 processor specific backend uses this field to track usage and
116 final offset. We use a union and two names primarily to document
117 the intent of any particular piece of code. The field should be
118 used as a count until size_dynamic_sections, at which point the
119 contents of the .got is fixed. Afterward, if this field is -1,
120 then the symbol does not require a global offset table entry. */
123 bfd_signed_vma refcount
;
127 /* Same, but tracks a procedure linkage table entry. */
130 bfd_signed_vma refcount
;
134 /* If this symbol is used in the linker created sections, the processor
135 specific backend uses this field to map the field into the offset
136 from the beginning of the section. */
137 struct elf_linker_section_pointers
*linker_section_pointer
;
139 /* Version information. */
142 /* This field is used for a symbol which is not defined in a
143 regular object. It points to the version information read in
144 from the dynamic object. */
145 Elf_Internal_Verdef
*verdef
;
146 /* This field is used for a symbol which is defined in a regular
147 object. It is set up in size_dynamic_sections. It points to
148 the version information we should write out for this symbol. */
149 struct bfd_elf_version_tree
*vertree
;
152 /* Virtual table entry use information. This array is nominally of size
153 size/sizeof(target_void_pointer), though we have to be able to assume
154 and track a size while the symbol is still undefined. It is indexed
155 via offset/sizeof(target_void_pointer). */
156 size_t vtable_entries_size
;
157 boolean
*vtable_entries_used
;
159 /* Virtual table derivation info. */
160 struct elf_link_hash_entry
*vtable_parent
;
162 /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
165 /* Symbol st_other value, symbol visibility. */
168 /* Hash value of the name computed using the ELF hash function. */
169 unsigned long elf_hash_value
;
171 /* Some flags; legal values follow. */
172 unsigned short elf_link_hash_flags
;
173 /* Symbol is referenced by a non-shared object. */
174 #define ELF_LINK_HASH_REF_REGULAR 01
175 /* Symbol is defined by a non-shared object. */
176 #define ELF_LINK_HASH_DEF_REGULAR 02
177 /* Symbol is referenced by a shared object. */
178 #define ELF_LINK_HASH_REF_DYNAMIC 04
179 /* Symbol is defined by a shared object. */
180 #define ELF_LINK_HASH_DEF_DYNAMIC 010
181 /* Symbol has a non-weak reference from a non-shared object. */
182 #define ELF_LINK_HASH_REF_REGULAR_NONWEAK 020
183 /* Dynamic symbol has been adjustd. */
184 #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 040
185 /* Symbol needs a copy reloc. */
186 #define ELF_LINK_HASH_NEEDS_COPY 0100
187 /* Symbol needs a procedure linkage table entry. */
188 #define ELF_LINK_HASH_NEEDS_PLT 0200
189 /* Symbol appears in a non-ELF input file. */
190 #define ELF_LINK_NON_ELF 0400
191 /* Symbol should be marked as hidden in the version information. */
192 #define ELF_LINK_HIDDEN 01000
193 /* Symbol was forced to local scope due to a version script file. */
194 #define ELF_LINK_FORCED_LOCAL 02000
195 /* Symbol was marked during garbage collection. */
196 #define ELF_LINK_HASH_MARK 04000
197 /* Symbol is referenced by a non-GOT/non-PLT relocation. This is
198 not currently set by all the backends. */
199 #define ELF_LINK_NON_GOT_REF 010000
202 /* Records local symbols to be emitted in the dynamic symbol table. */
204 struct elf_link_local_dynamic_entry
206 struct elf_link_local_dynamic_entry
*next
;
208 /* The input bfd this symbol came from. */
211 /* The index of the local symbol being copied. */
214 /* The index in the outgoing dynamic symbol table. */
217 /* A copy of the input symbol. */
218 Elf_Internal_Sym isym
;
221 /* ELF linker hash table. */
223 struct elf_link_hash_table
225 struct bfd_link_hash_table root
;
226 /* Whether we have created the special dynamic sections required
227 when linking against or generating a shared object. */
228 boolean dynamic_sections_created
;
229 /* The BFD used to hold special sections created by the linker.
230 This will be the first BFD found which requires these sections to
233 /* The number of symbols found in the link which must be put into
234 the .dynsym section. */
235 bfd_size_type dynsymcount
;
236 /* The string table of dynamic symbols, which becomes the .dynstr
238 struct bfd_strtab_hash
*dynstr
;
239 /* The number of buckets in the hash table in the .hash section.
240 This is based on the number of dynamic symbols. */
241 bfd_size_type bucketcount
;
242 /* A linked list of DT_NEEDED names found in dynamic objects
243 included in the link. */
244 struct bfd_link_needed_list
*needed
;
245 /* The _GLOBAL_OFFSET_TABLE_ symbol. */
246 struct elf_link_hash_entry
*hgot
;
247 /* A pointer to information used to link stabs in sections. */
249 /* A pointer to information used to merge SEC_MERGE sections. */
251 /* A linked list of local symbols to be added to .dynsym. */
252 struct elf_link_local_dynamic_entry
*dynlocal
;
253 /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
254 objects included in the link. */
255 struct bfd_link_needed_list
*runpath
;
258 /* Look up an entry in an ELF linker hash table. */
260 #define elf_link_hash_lookup(table, string, create, copy, follow) \
261 ((struct elf_link_hash_entry *) \
262 bfd_link_hash_lookup (&(table)->root, (string), (create), \
265 /* Traverse an ELF linker hash table. */
267 #define elf_link_hash_traverse(table, func, info) \
268 (bfd_link_hash_traverse \
270 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
273 /* Get the ELF linker hash table from a link_info structure. */
275 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
277 /* Constant information held for an ELF backend. */
279 struct elf_size_info
{
280 unsigned char sizeof_ehdr
, sizeof_phdr
, sizeof_shdr
;
281 unsigned char sizeof_rel
, sizeof_rela
, sizeof_sym
, sizeof_dyn
, sizeof_note
;
283 /* The size of entries in the .hash section. */
284 unsigned char sizeof_hash_entry
;
286 /* The number of internal relocations to allocate per external
288 unsigned char int_rels_per_ext_rel
;
290 unsigned char arch_size
, file_align
;
291 unsigned char elfclass
, ev_current
;
292 int (*write_out_phdrs
) PARAMS ((bfd
*, const Elf_Internal_Phdr
*, int));
293 boolean (*write_shdrs_and_ehdr
) PARAMS ((bfd
*));
294 void (*write_relocs
) PARAMS ((bfd
*, asection
*, PTR
));
295 void (*swap_symbol_out
) PARAMS ((bfd
*, const Elf_Internal_Sym
*, PTR
));
296 boolean (*slurp_reloc_table
)
297 PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
298 long (*slurp_symbol_table
) PARAMS ((bfd
*, asymbol
**, boolean
));
299 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
300 void (*swap_dyn_out
) PARAMS ((bfd
*, const Elf_Internal_Dyn
*, PTR
));
302 /* This function, if defined, is called to swap in a REL
303 relocation. If an external relocation corresponds to more than
304 one internal relocation, then all relocations are swapped in at
306 void (*swap_reloc_in
)
307 PARAMS ((bfd
*, const bfd_byte
*, Elf_Internal_Rel
*));
309 /* This function, if defined, is called to swap out a REL
311 void (*swap_reloc_out
)
312 PARAMS ((bfd
*, const Elf_Internal_Rel
*, bfd_byte
*));
314 /* This function, if defined, is called to swap in a RELA
315 relocation. If an external relocation corresponds to more than
316 one internal relocation, then all relocations are swapped in at
318 void (*swap_reloca_in
)
319 PARAMS ((bfd
*, const bfd_byte
*, Elf_Internal_Rela
*));
321 /* This function, if defined, is called to swap out a RELA
323 void (*swap_reloca_out
)
324 PARAMS ((bfd
*, const Elf_Internal_Rela
*, bfd_byte
*));
328 #define elf_symbol_from(ABFD,S) \
329 (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
330 && (S)->the_bfd->tdata.elf_obj_data != 0) \
331 ? (elf_symbol_type *) (S) \
334 struct elf_backend_data
336 /* The architecture for this backend. */
337 enum bfd_architecture arch
;
339 /* The ELF machine code (EM_xxxx) for this backend. */
340 int elf_machine_code
;
342 /* The maximum page size for this backend. */
345 /* A function to translate an ELF RELA relocation to a BFD arelent
347 void (*elf_info_to_howto
) PARAMS ((bfd
*, arelent
*,
348 Elf_Internal_Rela
*));
350 /* A function to translate an ELF REL relocation to a BFD arelent
352 void (*elf_info_to_howto_rel
) PARAMS ((bfd
*, arelent
*,
353 Elf_Internal_Rel
*));
355 /* A function to determine whether a symbol is global when
356 partitioning the symbol table into local and global symbols.
357 This should be NULL for most targets, in which case the correct
358 thing will be done. MIPS ELF, at least on the Irix 5, has
359 special requirements. */
360 boolean (*elf_backend_sym_is_global
) PARAMS ((bfd
*, asymbol
*));
362 /* The remaining functions are hooks which are called only if they
365 /* A function to permit a backend specific check on whether a
366 particular BFD format is relevant for an object file, and to
367 permit the backend to set any global information it wishes. When
368 this is called elf_elfheader is set, but anything else should be
369 used with caution. If this returns false, the check_format
370 routine will return a bfd_error_wrong_format error. */
371 boolean (*elf_backend_object_p
) PARAMS ((bfd
*));
373 /* A function to do additional symbol processing when reading the
374 ELF symbol table. This is where any processor-specific special
375 section indices are handled. */
376 void (*elf_backend_symbol_processing
) PARAMS ((bfd
*, asymbol
*));
378 /* A function to do additional symbol processing after reading the
379 entire ELF symbol table. */
380 boolean (*elf_backend_symbol_table_processing
) PARAMS ((bfd
*,
384 /* A function to set the type of the info field. Processor-specific
385 types should be handled here. */
386 int (*elf_backend_get_symbol_type
) PARAMS (( Elf_Internal_Sym
*, int));
388 /* A function to do additional processing on the ELF section header
389 just before writing it out. This is used to set the flags and
390 type fields for some sections, or to actually write out data for
392 boolean (*elf_backend_section_processing
) PARAMS ((bfd
*,
393 Elf32_Internal_Shdr
*));
395 /* A function to handle unusual section types when creating BFD
396 sections from ELF sections. */
397 boolean (*elf_backend_section_from_shdr
) PARAMS ((bfd
*,
398 Elf32_Internal_Shdr
*,
401 /* A function to convert machine dependent section header flags to
402 BFD internal section header flags. */
403 boolean (*elf_backend_section_flags
) PARAMS ((flagword
*,
404 Elf32_Internal_Shdr
*));
406 /* A function to handle unusual program segment types when creating BFD
407 sections from ELF program segments. */
408 boolean (*elf_backend_section_from_phdr
) PARAMS ((bfd
*,
409 Elf32_Internal_Phdr
*,
412 /* A function to set up the ELF section header for a BFD section in
413 preparation for writing it out. This is where the flags and type
414 fields are set for unusual sections. */
415 boolean (*elf_backend_fake_sections
) PARAMS ((bfd
*, Elf32_Internal_Shdr
*,
418 /* A function to get the ELF section index for a BFD section. If
419 this returns true, the section was found. If it is a normal ELF
420 section, *RETVAL should be left unchanged. If it is not a normal
421 ELF section *RETVAL should be set to the SHN_xxxx index. */
422 boolean (*elf_backend_section_from_bfd_section
)
423 PARAMS ((bfd
*, Elf32_Internal_Shdr
*, asection
*, int *retval
));
425 /* If this field is not NULL, it is called by the add_symbols phase
426 of a link just before adding a symbol to the global linker hash
427 table. It may modify any of the fields as it wishes. If *NAME
428 is set to NULL, the symbol will be skipped rather than being
429 added to the hash table. This function is responsible for
430 handling all processor dependent symbol bindings and section
431 indices, and must set at least *FLAGS and *SEC for each processor
432 dependent case; failure to do so will cause a link error. */
433 boolean (*elf_add_symbol_hook
)
434 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
,
435 const Elf_Internal_Sym
*, const char **name
,
436 flagword
*flags
, asection
**sec
, bfd_vma
*value
));
438 /* If this field is not NULL, it is called by the elf_link_output_sym
439 phase of a link for each symbol which will appear in the object file. */
440 boolean (*elf_backend_link_output_symbol_hook
)
441 PARAMS ((bfd
*, struct bfd_link_info
*info
, const char *,
442 Elf_Internal_Sym
*, asection
*));
444 /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
445 linker the first time it encounters a dynamic object in the link.
446 This function must create any sections required for dynamic
447 linking. The ABFD argument is a dynamic object. The .interp,
448 .dynamic, .dynsym, .dynstr, and .hash functions have already been
449 created, and this function may modify the section flags if
450 desired. This function will normally create the .got and .plt
451 sections, but different backends have different requirements. */
452 boolean (*elf_backend_create_dynamic_sections
)
453 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
455 /* The CHECK_RELOCS function is called by the add_symbols phase of
456 the ELF backend linker. It is called once for each section with
457 relocs of an object file, just after the symbols for the object
458 file have been added to the global linker hash table. The
459 function must look through the relocs and do any special handling
460 required. This generally means allocating space in the global
461 offset table, and perhaps allocating space for a reloc. The
462 relocs are always passed as Rela structures; if the section
463 actually uses Rel structures, the r_addend field will always be
465 boolean (*check_relocs
)
466 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
467 const Elf_Internal_Rela
*relocs
));
469 /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
470 linker for every symbol which is defined by a dynamic object and
471 referenced by a regular object. This is called after all the
472 input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
473 function has been called. The hash table entry should be
474 bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
475 defined in a section from a dynamic object. Dynamic object
476 sections are not included in the final link, and this function is
477 responsible for changing the value to something which the rest of
478 the link can deal with. This will normally involve adding an
479 entry to the .plt or .got or some such section, and setting the
480 symbol to point to that. */
481 boolean (*elf_backend_adjust_dynamic_symbol
)
482 PARAMS ((struct bfd_link_info
*info
, struct elf_link_hash_entry
*h
));
484 /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
485 after all the linker input files have been seen but before the
486 section sizes have been set. This is called after
487 ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */
488 boolean (*elf_backend_always_size_sections
)
489 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
));
491 /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
492 linker after all the linker input files have been seen but before
493 the sections sizes have been set. This is called after
494 ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
495 It is only called when linking against a dynamic object. It must
496 set the sizes of the dynamic sections, and may fill in their
497 contents as well. The generic ELF linker can handle the .dynsym,
498 .dynstr and .hash sections. This function must handle the
499 .interp section and any sections created by the
500 CREATE_DYNAMIC_SECTIONS entry point. */
501 boolean (*elf_backend_size_dynamic_sections
)
502 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
));
504 /* The RELOCATE_SECTION function is called by the ELF backend linker
505 to handle the relocations for a section.
507 The relocs are always passed as Rela structures; if the section
508 actually uses Rel structures, the r_addend field will always be
511 This function is responsible for adjust the section contents as
512 necessary, and (if using Rela relocs and generating a
513 relocateable output file) adjusting the reloc addend as
516 This function does not have to worry about setting the reloc
517 address or the reloc symbol index.
519 LOCAL_SYMS is a pointer to the swapped in local symbols.
521 LOCAL_SECTIONS is an array giving the section in the input file
522 corresponding to the st_shndx field of each local symbol.
524 The global hash table entry for the global symbols can be found
525 via elf_sym_hashes (input_bfd).
527 When generating relocateable output, this function must handle
528 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
529 going to be the section symbol corresponding to the output
530 section, which means that the addend must be adjusted
532 boolean (*elf_backend_relocate_section
)
533 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
,
534 bfd
*input_bfd
, asection
*input_section
, bfd_byte
*contents
,
535 Elf_Internal_Rela
*relocs
, Elf_Internal_Sym
*local_syms
,
536 asection
**local_sections
));
538 /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
539 linker just before it writes a symbol out to the .dynsym section.
540 The processor backend may make any required adjustment to the
541 symbol. It may also take the opportunity to set contents of the
542 dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
543 all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
544 on those symbols which are defined by a dynamic object. */
545 boolean (*elf_backend_finish_dynamic_symbol
)
546 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
,
547 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*sym
));
549 /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
550 linker just before it writes all the dynamic sections out to the
551 output file. The FINISH_DYNAMIC_SYMBOL will have been called on
552 all dynamic symbols. */
553 boolean (*elf_backend_finish_dynamic_sections
)
554 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
));
556 /* A function to do any beginning processing needed for the ELF file
557 before building the ELF headers and computing file positions. */
558 void (*elf_backend_begin_write_processing
)
559 PARAMS ((bfd
*, struct bfd_link_info
*));
561 /* A function to do any final processing needed for the ELF file
562 before writing it out. The LINKER argument is true if this BFD
563 was created by the ELF backend linker. */
564 void (*elf_backend_final_write_processing
)
565 PARAMS ((bfd
*, boolean linker
));
567 /* This function is called by get_program_header_size. It should
568 return the number of additional program segments which this BFD
569 will need. It should return -1 on error. */
570 int (*elf_backend_additional_program_headers
) PARAMS ((bfd
*));
572 /* This function is called to modify an existing segment map in a
573 backend specific fashion. */
574 boolean (*elf_backend_modify_segment_map
) PARAMS ((bfd
*));
576 /* This function is called during section gc to discover the section a
577 particular relocation refers to. It need not be defined for hosts
578 that have no queer relocation types. */
579 asection
* (*gc_mark_hook
)
580 PARAMS ((bfd
*abfd
, struct bfd_link_info
*, Elf_Internal_Rela
*,
581 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*));
583 /* This function, if defined, is called during the sweep phase of gc
584 in order that a backend might update any data structures it might
586 boolean (*gc_sweep_hook
)
587 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
588 const Elf_Internal_Rela
*relocs
));
590 /* This function, if defined, is called after the ELF headers have
591 been created. This allows for things like the OS and ABI versions
593 void (*elf_backend_post_process_headers
)
594 PARAMS ((bfd
*, struct bfd_link_info
*));
596 /* This function, if defined, prints a symbol to file and returns the
597 name of the symbol to be printed. It should return NULL to fall
598 back to default symbol printing. */
599 const char *(*elf_backend_print_symbol_all
)
600 PARAMS ((bfd
*, PTR
, asymbol
*));
602 /* This function, if defined, is called after all local symbols and
603 global symbols converted to locals are emited into the symtab
604 section. It allows the backend to emit special global symbols
605 not handled in the hash table. */
606 boolean (*elf_backend_output_arch_syms
)
607 PARAMS ((bfd
*, struct bfd_link_info
*, PTR
,
608 boolean (*) PARAMS ((PTR
, const char *,
609 Elf_Internal_Sym
*, asection
*))));
611 /* Copy any information related to dynamic linking from a pre-existing
612 symbol IND to a newly created symbol DIR. */
613 void (*elf_backend_copy_indirect_symbol
)
614 PARAMS ((struct elf_link_hash_entry
*, struct elf_link_hash_entry
*));
616 /* Modify any information related to dynamic linking such that the
617 symbol is not exported. */
618 void (*elf_backend_hide_symbol
)
619 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
621 /* Emit relocations. Overrides default routine for emitting relocs,
622 except during a relocatable link, or if all relocs are being emitted. */
623 void (*elf_backend_emit_relocs
)
624 PARAMS ((bfd
*, asection
*, Elf_Internal_Shdr
*, Elf_Internal_Rela
*));
626 /* Count relocations. Not called for relocatable links
627 or if all relocs are being preserved in the output. */
628 unsigned int (*elf_backend_count_relocs
)
629 PARAMS ((asection
*, Elf_Internal_Rela
*));
631 /* The swapping table to use when dealing with ECOFF information.
632 Used for the MIPS ELF .mdebug section. */
633 const struct ecoff_debug_swap
*elf_backend_ecoff_debug_swap
;
635 /* Alternate EM_xxxx machine codes for this backend. */
636 int elf_machine_alt1
;
637 int elf_machine_alt2
;
639 const struct elf_size_info
*s
;
641 /* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the
643 bfd_vma got_symbol_offset
;
645 /* The size in bytes of the headers for the GOT and PLT. This includes
646 the so-called reserved entries on some systems. */
647 bfd_vma got_header_size
;
648 bfd_vma plt_header_size
;
650 /* This is true if the linker should act like collect and gather
651 global constructors and destructors by name. This is true for
652 MIPS ELF because the Irix 5 tools can not handle the .init
654 unsigned collect
: 1;
656 /* This is true if the linker should ignore changes to the type of a
657 symbol. This is true for MIPS ELF because some Irix 5 objects
658 record undefined functions as STT_OBJECT although the definitions
660 unsigned type_change_ok
: 1;
662 /* Whether the backend may use REL relocations. (Some backends use
663 both REL and RELA relocations, and this flag is set for those
665 unsigned may_use_rel_p
: 1;
667 /* Whether the backend may use RELA relocations. (Some backends use
668 both REL and RELA relocations, and this flag is set for those
670 unsigned may_use_rela_p
: 1;
672 /* Whether the default relocation type is RELA. If a backend with
673 this flag set wants REL relocations for a particular section,
674 it must note that explicitly. Similarly, if this flag is clear,
675 and the backend wants RELA relocations for a particular
677 unsigned default_use_rela_p
: 1;
679 /* True if addresses "naturally" sign extend. This is used when
680 swapping in from Elf32 when BFD64. */
681 unsigned sign_extend_vma
: 1;
683 unsigned want_got_plt
: 1;
684 unsigned plt_readonly
: 1;
685 unsigned want_plt_sym
: 1;
686 unsigned plt_not_loaded
: 1;
687 unsigned plt_alignment
: 4;
688 unsigned can_gc_sections
: 1;
689 unsigned want_dynbss
: 1;
692 /* Information stored for each BFD section in an ELF file. This
693 structure is allocated by elf_new_section_hook. */
695 struct bfd_elf_section_data
697 /* The ELF header for this section. */
698 Elf_Internal_Shdr this_hdr
;
699 /* The ELF header for the reloc section associated with this
701 Elf_Internal_Shdr rel_hdr
;
702 /* If there is a second reloc section associated with this section,
703 as can happen on Irix 6, this field points to the header. */
704 Elf_Internal_Shdr
*rel_hdr2
;
705 /* The number of relocations currently assigned to REL_HDR. */
706 unsigned int rel_count
;
707 /* The number of relocations currently assigned to REL_HDR2. */
708 unsigned int rel_count2
;
709 /* The ELF section number of this section. Only used for an output
712 /* The ELF section number of the reloc section indicated by
713 REL_HDR if any. Only used for an output file. */
715 /* The ELF section number of the reloc section indicated by
716 REL_HDR2 if any. Only used for an output file. */
718 /* Used by the backend linker to store the symbol hash table entries
719 associated with relocs against global symbols. */
720 struct elf_link_hash_entry
**rel_hashes
;
721 /* A pointer to the swapped relocs. If the section uses REL relocs,
722 rather than RELA, all the r_addend fields will be zero. This
723 pointer may be NULL. It is used by the backend linker. */
724 Elf_Internal_Rela
*relocs
;
725 /* Used by the backend linker when generating a shared library to
726 record the dynamic symbol index for a section symbol
727 corresponding to this section. A value of 0 means that there is
728 no dynamic symbol for this section. */
730 /* A pointer used for .stab linking optimizations. */
732 /* A pointer used for SEC_MERGE optimizations. */
734 /* A pointer available for the processor specific ELF backend. */
736 /* Nonzero if this section uses RELA relocations, rather than REL. */
737 unsigned int use_rela_p
:1;
740 #define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd)
742 #define get_elf_backend_data(abfd) \
743 ((struct elf_backend_data *) (abfd)->xvec->backend_data)
745 /* Enumeration to specify the special section. */
746 typedef enum elf_linker_section_enum
748 LINKER_SECTION_UNKNOWN
, /* not used */
749 LINKER_SECTION_GOT
, /* .got section for global offset pointers */
750 LINKER_SECTION_PLT
, /* .plt section for generated procedure stubs */
751 LINKER_SECTION_SDATA
, /* .sdata/.sbss section for PowerPC */
752 LINKER_SECTION_SDATA2
, /* .sdata2/.sbss2 section for PowerPC */
753 LINKER_SECTION_MAX
/* # of linker sections */
754 } elf_linker_section_enum_t
;
756 /* Sections created by the linker. */
758 typedef struct elf_linker_section
760 char *name
; /* name of the section */
761 char *rel_name
; /* name of the associated .rel{,a}. section */
762 char *bss_name
; /* name of a related .bss section */
763 char *sym_name
; /* name of symbol to reference this section */
764 asection
*section
; /* pointer to the section */
765 asection
*bss_section
; /* pointer to the bss section associated with this */
766 asection
*rel_section
; /* pointer to the relocations needed for this section */
767 struct elf_link_hash_entry
*sym_hash
; /* pointer to the created symbol hash value */
768 bfd_vma initial_size
; /* initial size before any linker generated allocations */
769 bfd_vma sym_offset
; /* offset of symbol from beginning of section */
770 bfd_vma hole_size
; /* size of reserved address hole in allocation */
771 bfd_vma hole_offset
; /* current offset for the hole */
772 bfd_vma max_hole_offset
; /* maximum offset for the hole */
773 elf_linker_section_enum_t which
; /* which section this is */
774 boolean hole_written_p
; /* whether the hole has been initialized */
775 unsigned int alignment
; /* alignment for the section */
776 flagword flags
; /* flags to use to create the section */
777 } elf_linker_section_t
;
779 /* Linked list of allocated pointer entries. This hangs off of the symbol lists, and
780 provides allows us to return different pointers, based on different addend's. */
782 typedef struct elf_linker_section_pointers
784 struct elf_linker_section_pointers
*next
; /* next allocated pointer for this symbol */
785 bfd_vma offset
; /* offset of pointer from beginning of section */
786 bfd_signed_vma addend
; /* addend used */
787 elf_linker_section_enum_t which
; /* which linker section this is */
788 boolean written_address_p
; /* whether address was written yet */
789 } elf_linker_section_pointers_t
;
791 /* Some private data is stashed away for future use using the tdata pointer
792 in the bfd structure. */
796 Elf_Internal_Ehdr elf_header
[1]; /* Actual data, but ref like ptr */
797 Elf_Internal_Shdr
**elf_sect_ptr
;
798 Elf_Internal_Phdr
*phdr
;
799 struct elf_segment_map
*segment_map
;
800 struct bfd_strtab_hash
*strtab_ptr
;
803 asymbol
**section_syms
; /* STT_SECTION symbols for each section */
804 Elf_Internal_Shdr symtab_hdr
;
805 Elf_Internal_Shdr shstrtab_hdr
;
806 Elf_Internal_Shdr strtab_hdr
;
807 Elf_Internal_Shdr dynsymtab_hdr
;
808 Elf_Internal_Shdr dynstrtab_hdr
;
809 Elf_Internal_Shdr dynversym_hdr
;
810 Elf_Internal_Shdr dynverref_hdr
;
811 Elf_Internal_Shdr dynverdef_hdr
;
812 unsigned int symtab_section
, shstrtab_section
;
813 unsigned int strtab_section
, dynsymtab_section
;
814 unsigned int dynversym_section
, dynverdef_section
, dynverref_section
;
815 file_ptr next_file_pos
;
817 /* we don't need these inside bfd anymore, and I think
818 these weren't used outside bfd. */
819 void *prstatus
; /* The raw /proc prstatus structure */
820 void *prpsinfo
; /* The raw /proc prpsinfo structure */
822 bfd_vma gp
; /* The gp value (MIPS only, for now) */
823 unsigned int gp_size
; /* The gp size (MIPS only, for now) */
825 /* Information grabbed from an elf core file. */
832 /* This is set to true if the object was created by the backend
836 /* A mapping from external symbols to entries in the linker hash
837 table, used when linking. This is indexed by the symbol index
838 minus the sh_info field of the symbol table header. */
839 struct elf_link_hash_entry
**sym_hashes
;
841 /* A mapping from local symbols to offsets into the global offset
842 table, used when linking. This is indexed by the symbol index.
843 Like for the globals, we use a union and two names primarily to
844 document the intent of any particular piece of code. The field
845 should be used as a count until size_dynamic_sections, at which
846 point the contents of the .got is fixed. Afterward, if an entry
847 is -1, then the symbol does not require a global offset table entry. */
850 bfd_signed_vma
*refcounts
;
854 /* A mapping from local symbols to offsets into the various linker
855 sections added. This is index by the symbol index. */
856 elf_linker_section_pointers_t
**linker_section_pointers
;
858 /* The linker ELF emulation code needs to let the backend ELF linker
859 know what filename should be used for a dynamic object if the
860 dynamic object is found using a search. The emulation code then
861 sometimes needs to know what name was actually used. Until the
862 file has been added to the linker symbol table, this field holds
863 the name the linker wants. After it has been added, it holds the
864 name actually used, which will be the DT_SONAME entry if there is
868 /* When a reference in a regular object is resolved by a shared
869 object is loaded into via the DT_NEEDED entries by the linker
870 ELF emulation code, we need to add the shared object to the
871 DT_NEEDED list of the resulting binary to indicate the dependency
872 as if the -l option is passed to the linker. This field holds the
873 name of the loaded shared object. */
874 const char *dt_soname
;
876 /* Irix 5 often screws up the symbol table, sorting local symbols
877 after global symbols. This flag is set if the symbol table in
878 this BFD appears to be screwed up. If it is, we ignore the
879 sh_info field in the symbol table header, and always read all the
883 /* Records the result of `get_program_header_size'. */
884 bfd_size_type program_header_size
;
886 /* Used by find_nearest_line entry point. */
889 /* Used by MIPS ELF find_nearest_line entry point. The structure
890 could be included directly in this one, but there's no point to
891 wasting the memory just for the infrequently called
892 find_nearest_line. */
893 struct mips_elf_find_line
*find_line_info
;
895 /* A place to stash dwarf1 info for this bfd. */
896 struct dwarf1_debug
*dwarf1_find_line_info
;
898 /* A place to stash dwarf2 info for this bfd. */
899 PTR dwarf2_find_line_info
;
901 /* An array of stub sections indexed by symbol number, used by the
902 MIPS ELF linker. FIXME: We should figure out some way to only
903 include this field for a MIPS ELF target. */
904 asection
**local_stubs
;
906 /* Used to determine if the e_flags field has been initialized */
909 /* Number of symbol version definitions we are about to emit. */
910 unsigned int cverdefs
;
912 /* Number of symbol version references we are about to emit. */
913 unsigned int cverrefs
;
915 /* Symbol version definitions in external objects. */
916 Elf_Internal_Verdef
*verdef
;
918 /* Symbol version references to external objects. */
919 Elf_Internal_Verneed
*verref
;
921 /* Linker sections that we are interested in. */
922 struct elf_linker_section
*linker_section
[ (int)LINKER_SECTION_MAX
];
924 /* The Irix 5 support uses two virtual sections, which represent
925 text/data symbols defined in dynamic objects. */
926 asymbol
*elf_data_symbol
;
927 asymbol
*elf_text_symbol
;
928 asection
*elf_data_section
;
929 asection
*elf_text_section
;
932 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
933 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
934 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
935 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr)
936 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
937 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
938 #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
939 #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
940 #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
941 #define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals)
942 #define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals)
943 #define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms)
944 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
945 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
946 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
947 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
948 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
949 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
950 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
951 #define elf_local_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers)
952 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
953 #define elf_dt_soname(bfd) (elf_tdata(bfd) -> dt_soname)
954 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
955 #define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init)
956 #define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n])
958 extern void _bfd_elf_swap_verdef_in
959 PARAMS ((bfd
*, const Elf_External_Verdef
*, Elf_Internal_Verdef
*));
960 extern void _bfd_elf_swap_verdef_out
961 PARAMS ((bfd
*, const Elf_Internal_Verdef
*, Elf_External_Verdef
*));
962 extern void _bfd_elf_swap_verdaux_in
963 PARAMS ((bfd
*, const Elf_External_Verdaux
*, Elf_Internal_Verdaux
*));
964 extern void _bfd_elf_swap_verdaux_out
965 PARAMS ((bfd
*, const Elf_Internal_Verdaux
*, Elf_External_Verdaux
*));
966 extern void _bfd_elf_swap_verneed_in
967 PARAMS ((bfd
*, const Elf_External_Verneed
*, Elf_Internal_Verneed
*));
968 extern void _bfd_elf_swap_verneed_out
969 PARAMS ((bfd
*, const Elf_Internal_Verneed
*, Elf_External_Verneed
*));
970 extern void _bfd_elf_swap_vernaux_in
971 PARAMS ((bfd
*, const Elf_External_Vernaux
*, Elf_Internal_Vernaux
*));
972 extern void _bfd_elf_swap_vernaux_out
973 PARAMS ((bfd
*, const Elf_Internal_Vernaux
*, Elf_External_Vernaux
*));
974 extern void _bfd_elf_swap_versym_in
975 PARAMS ((bfd
*, const Elf_External_Versym
*, Elf_Internal_Versym
*));
976 extern void _bfd_elf_swap_versym_out
977 PARAMS ((bfd
*, const Elf_Internal_Versym
*, Elf_External_Versym
*));
979 extern int _bfd_elf_section_from_bfd_section
PARAMS ((bfd
*, asection
*));
980 extern char *bfd_elf_string_from_elf_section
981 PARAMS ((bfd
*, unsigned, unsigned));
982 extern char *bfd_elf_get_str_section
PARAMS ((bfd
*, unsigned));
984 extern boolean _bfd_elf_print_private_bfd_data
PARAMS ((bfd
*, PTR
));
985 extern void bfd_elf_print_symbol
PARAMS ((bfd
*, PTR
, asymbol
*,
986 bfd_print_symbol_type
));
987 #define elf_string_from_elf_strtab(abfd,strindex) \
988 bfd_elf_string_from_elf_section(abfd,elf_elfheader(abfd)->e_shstrndx,strindex)
990 #define bfd_elf32_print_symbol bfd_elf_print_symbol
991 #define bfd_elf64_print_symbol bfd_elf_print_symbol
993 extern unsigned long bfd_elf_hash
PARAMS ((const char *));
995 extern bfd_reloc_status_type bfd_elf_generic_reloc
PARAMS ((bfd
*,
1002 extern boolean bfd_elf_mkobject
PARAMS ((bfd
*));
1003 extern boolean bfd_elf_mkcorefile
PARAMS ((bfd
*));
1004 extern Elf_Internal_Shdr
*bfd_elf_find_section
PARAMS ((bfd
*, char *));
1005 extern boolean _bfd_elf_make_section_from_shdr
1006 PARAMS ((bfd
*abfd
, Elf_Internal_Shdr
*hdr
, const char *name
));
1007 extern boolean _bfd_elf_make_section_from_phdr
1008 PARAMS ((bfd
*abfd
, Elf_Internal_Phdr
*hdr
, int index
, const char *typename
));
1009 extern struct bfd_hash_entry
*_bfd_elf_link_hash_newfunc
1010 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
1011 extern struct bfd_link_hash_table
*_bfd_elf_link_hash_table_create
1013 extern void _bfd_elf_link_hash_copy_indirect
1014 PARAMS ((struct elf_link_hash_entry
*, struct elf_link_hash_entry
*));
1015 extern void _bfd_elf_link_hash_hide_symbol
1016 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
1017 extern boolean _bfd_elf_link_hash_table_init
1018 PARAMS ((struct elf_link_hash_table
*, bfd
*,
1019 struct bfd_hash_entry
*(*) (struct bfd_hash_entry
*,
1020 struct bfd_hash_table
*,
1022 extern boolean _bfd_elf_slurp_version_tables
PARAMS ((bfd
*));
1024 extern boolean _bfd_elf_merge_sections
1025 PARAMS ((bfd
*, struct bfd_link_info
*));
1027 extern boolean _bfd_elf_copy_private_symbol_data
1028 PARAMS ((bfd
*, asymbol
*, bfd
*, asymbol
*));
1029 extern boolean _bfd_elf_copy_private_section_data
1030 PARAMS ((bfd
*, asection
*, bfd
*, asection
*));
1031 extern boolean _bfd_elf_write_object_contents
PARAMS ((bfd
*));
1032 extern boolean _bfd_elf_write_corefile_contents
PARAMS ((bfd
*));
1033 extern boolean _bfd_elf_set_section_contents
PARAMS ((bfd
*, sec_ptr
, PTR
,
1036 extern long _bfd_elf_get_symtab_upper_bound
PARAMS ((bfd
*));
1037 extern long _bfd_elf_get_symtab
PARAMS ((bfd
*, asymbol
**));
1038 extern long _bfd_elf_get_dynamic_symtab_upper_bound
PARAMS ((bfd
*));
1039 extern long _bfd_elf_canonicalize_dynamic_symtab
PARAMS ((bfd
*, asymbol
**));
1040 extern long _bfd_elf_get_reloc_upper_bound
PARAMS ((bfd
*, sec_ptr
));
1041 extern long _bfd_elf_canonicalize_reloc
PARAMS ((bfd
*, sec_ptr
,
1042 arelent
**, asymbol
**));
1043 extern long _bfd_elf_get_dynamic_reloc_upper_bound
PARAMS ((bfd
*));
1044 extern long _bfd_elf_canonicalize_dynamic_reloc
PARAMS ((bfd
*, arelent
**,
1046 extern asymbol
*_bfd_elf_make_empty_symbol
PARAMS ((bfd
*));
1047 extern void _bfd_elf_get_symbol_info
PARAMS ((bfd
*, asymbol
*,
1049 extern boolean _bfd_elf_is_local_label_name
PARAMS ((bfd
*, const char *));
1050 extern alent
*_bfd_elf_get_lineno
PARAMS ((bfd
*, asymbol
*));
1051 extern boolean _bfd_elf_set_arch_mach
PARAMS ((bfd
*, enum bfd_architecture
,
1053 extern boolean _bfd_elf_find_nearest_line
PARAMS ((bfd
*, asection
*,
1055 bfd_vma
, const char **,
1058 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
1059 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
1060 extern int _bfd_elf_sizeof_headers
PARAMS ((bfd
*, boolean
));
1061 extern boolean _bfd_elf_new_section_hook
PARAMS ((bfd
*, asection
*));
1062 extern boolean _bfd_elf_init_reloc_shdr
1063 PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*, boolean
));
1065 /* If the target doesn't have reloc handling written yet: */
1066 extern void _bfd_elf_no_info_to_howto
PARAMS ((bfd
*, arelent
*,
1067 Elf_Internal_Rela
*));
1069 extern boolean bfd_section_from_shdr
PARAMS ((bfd
*, unsigned int shindex
));
1070 extern boolean bfd_section_from_phdr
PARAMS ((bfd
*, Elf_Internal_Phdr
*, int));
1072 extern int _bfd_elf_symbol_from_bfd_symbol
PARAMS ((bfd
*, asymbol
**));
1074 asection
*bfd_section_from_elf_index
PARAMS ((bfd
*, unsigned int));
1075 boolean _bfd_elf_create_dynamic_sections
PARAMS ((bfd
*,
1076 struct bfd_link_info
*));
1077 struct bfd_strtab_hash
*_bfd_elf_stringtab_init
PARAMS ((void));
1079 _bfd_elf_link_record_dynamic_symbol
PARAMS ((struct bfd_link_info
*,
1080 struct elf_link_hash_entry
*));
1082 _bfd_elf_link_lookup_local_dynindx
PARAMS ((struct bfd_link_info
*,
1085 _bfd_elf_compute_section_file_positions
PARAMS ((bfd
*,
1086 struct bfd_link_info
*));
1087 void _bfd_elf_assign_file_positions_for_relocs
PARAMS ((bfd
*));
1088 file_ptr _bfd_elf_assign_file_position_for_section
PARAMS ((Elf_Internal_Shdr
*,
1092 extern boolean _bfd_elf_validate_reloc
PARAMS ((bfd
*, arelent
*));
1094 boolean _bfd_elf_create_dynamic_sections
PARAMS ((bfd
*,
1095 struct bfd_link_info
*));
1096 boolean _bfd_elf_create_got_section
PARAMS ((bfd
*,
1097 struct bfd_link_info
*));
1098 unsigned long _bfd_elf_link_renumber_dynsyms
PARAMS ((bfd
*,
1099 struct bfd_link_info
*));
1101 elf_linker_section_t
*_bfd_elf_create_linker_section
1103 struct bfd_link_info
*info
,
1104 enum elf_linker_section_enum
,
1105 elf_linker_section_t
*defaults
));
1107 elf_linker_section_pointers_t
*_bfd_elf_find_pointer_linker_section
1108 PARAMS ((elf_linker_section_pointers_t
*linker_pointers
,
1109 bfd_signed_vma addend
,
1110 elf_linker_section_enum_t which
));
1112 boolean bfd_elf32_create_pointer_linker_section
1114 struct bfd_link_info
*info
,
1115 elf_linker_section_t
*lsect
,
1116 struct elf_link_hash_entry
*h
,
1117 const Elf32_Internal_Rela
*rel
));
1119 bfd_vma bfd_elf32_finish_pointer_linker_section
1120 PARAMS ((bfd
*output_abfd
,
1122 struct bfd_link_info
*info
,
1123 elf_linker_section_t
*lsect
,
1124 struct elf_link_hash_entry
*h
,
1126 const Elf32_Internal_Rela
*rel
,
1127 int relative_reloc
));
1129 boolean bfd_elf64_create_pointer_linker_section
1131 struct bfd_link_info
*info
,
1132 elf_linker_section_t
*lsect
,
1133 struct elf_link_hash_entry
*h
,
1134 const Elf64_Internal_Rela
*rel
));
1136 bfd_vma bfd_elf64_finish_pointer_linker_section
1137 PARAMS ((bfd
*output_abfd
,
1139 struct bfd_link_info
*info
,
1140 elf_linker_section_t
*lsect
,
1141 struct elf_link_hash_entry
*h
,
1143 const Elf64_Internal_Rela
*rel
,
1144 int relative_reloc
));
1146 boolean _bfd_elf_make_linker_section_rela
1147 PARAMS ((bfd
*dynobj
,
1148 elf_linker_section_t
*lsect
,
1151 boolean _bfd_elfcore_section_from_phdr
1152 PARAMS ((bfd
*, Elf_Internal_Phdr
*, int));
1154 extern const bfd_target
*bfd_elf32_object_p
PARAMS ((bfd
*));
1155 extern const bfd_target
*bfd_elf32_core_file_p
PARAMS ((bfd
*));
1156 extern char *bfd_elf32_core_file_failing_command
PARAMS ((bfd
*));
1157 extern int bfd_elf32_core_file_failing_signal
PARAMS ((bfd
*));
1158 extern boolean bfd_elf32_core_file_matches_executable_p
PARAMS ((bfd
*,
1161 extern boolean bfd_elf32_bfd_link_add_symbols
1162 PARAMS ((bfd
*, struct bfd_link_info
*));
1163 extern boolean bfd_elf32_bfd_final_link
1164 PARAMS ((bfd
*, struct bfd_link_info
*));
1166 extern void bfd_elf32_swap_symbol_in
1167 PARAMS ((bfd
*, const Elf32_External_Sym
*, Elf_Internal_Sym
*));
1168 extern void bfd_elf32_swap_symbol_out
1169 PARAMS ((bfd
*, const Elf_Internal_Sym
*, PTR
));
1170 extern void bfd_elf32_swap_reloc_in
1171 PARAMS ((bfd
*, const Elf32_External_Rel
*, Elf_Internal_Rel
*));
1172 extern void bfd_elf32_swap_reloc_out
1173 PARAMS ((bfd
*, const Elf_Internal_Rel
*, Elf32_External_Rel
*));
1174 extern void bfd_elf32_swap_reloca_in
1175 PARAMS ((bfd
*, const Elf32_External_Rela
*, Elf_Internal_Rela
*));
1176 extern void bfd_elf32_swap_reloca_out
1177 PARAMS ((bfd
*, const Elf_Internal_Rela
*, Elf32_External_Rela
*));
1178 extern void bfd_elf32_swap_phdr_in
1179 PARAMS ((bfd
*, const Elf32_External_Phdr
*, Elf_Internal_Phdr
*));
1180 extern void bfd_elf32_swap_phdr_out
1181 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, Elf32_External_Phdr
*));
1182 extern void bfd_elf32_swap_dyn_in
1183 PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1184 extern void bfd_elf32_swap_dyn_out
1185 PARAMS ((bfd
*, const Elf_Internal_Dyn
*, PTR
));
1186 extern long bfd_elf32_slurp_symbol_table
1187 PARAMS ((bfd
*, asymbol
**, boolean
));
1188 extern boolean bfd_elf32_write_shdrs_and_ehdr
PARAMS ((bfd
*));
1189 extern int bfd_elf32_write_out_phdrs
1190 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, int));
1191 extern void bfd_elf32_write_relocs
1192 PARAMS ((bfd
*, asection
*, PTR
));
1193 extern boolean bfd_elf32_slurp_reloc_table
1194 PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
1195 extern boolean bfd_elf32_add_dynamic_entry
1196 PARAMS ((struct bfd_link_info
*, bfd_vma
, bfd_vma
));
1197 extern boolean bfd_elf32_link_create_dynamic_sections
1198 PARAMS ((bfd
*, struct bfd_link_info
*));
1199 extern Elf_Internal_Rela
*_bfd_elf32_link_read_relocs
1200 PARAMS ((bfd
*, asection
*, PTR
, Elf_Internal_Rela
*, boolean
));
1202 extern const bfd_target
*bfd_elf64_object_p
PARAMS ((bfd
*));
1203 extern const bfd_target
*bfd_elf64_core_file_p
PARAMS ((bfd
*));
1204 extern char *bfd_elf64_core_file_failing_command
PARAMS ((bfd
*));
1205 extern int bfd_elf64_core_file_failing_signal
PARAMS ((bfd
*));
1206 extern boolean bfd_elf64_core_file_matches_executable_p
PARAMS ((bfd
*,
1208 extern boolean bfd_elf64_bfd_link_add_symbols
1209 PARAMS ((bfd
*, struct bfd_link_info
*));
1210 extern boolean bfd_elf64_bfd_final_link
1211 PARAMS ((bfd
*, struct bfd_link_info
*));
1213 extern void bfd_elf64_swap_symbol_in
1214 PARAMS ((bfd
*, const Elf64_External_Sym
*, Elf_Internal_Sym
*));
1215 extern void bfd_elf64_swap_symbol_out
1216 PARAMS ((bfd
*, const Elf_Internal_Sym
*, PTR
));
1217 extern void bfd_elf64_swap_reloc_in
1218 PARAMS ((bfd
*, const Elf64_External_Rel
*, Elf_Internal_Rel
*));
1219 extern void bfd_elf64_swap_reloc_out
1220 PARAMS ((bfd
*, const Elf_Internal_Rel
*, Elf64_External_Rel
*));
1221 extern void bfd_elf64_swap_reloca_in
1222 PARAMS ((bfd
*, const Elf64_External_Rela
*, Elf_Internal_Rela
*));
1223 extern void bfd_elf64_swap_reloca_out
1224 PARAMS ((bfd
*, const Elf_Internal_Rela
*, Elf64_External_Rela
*));
1225 extern void bfd_elf64_swap_phdr_in
1226 PARAMS ((bfd
*, const Elf64_External_Phdr
*, Elf_Internal_Phdr
*));
1227 extern void bfd_elf64_swap_phdr_out
1228 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, Elf64_External_Phdr
*));
1229 extern void bfd_elf64_swap_dyn_in
1230 PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1231 extern void bfd_elf64_swap_dyn_out
1232 PARAMS ((bfd
*, const Elf_Internal_Dyn
*, PTR
));
1233 extern long bfd_elf64_slurp_symbol_table
1234 PARAMS ((bfd
*, asymbol
**, boolean
));
1235 extern boolean bfd_elf64_write_shdrs_and_ehdr
PARAMS ((bfd
*));
1236 extern int bfd_elf64_write_out_phdrs
1237 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, int));
1238 extern void bfd_elf64_write_relocs
1239 PARAMS ((bfd
*, asection
*, PTR
));
1240 extern boolean bfd_elf64_slurp_reloc_table
1241 PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
1242 extern boolean bfd_elf64_add_dynamic_entry
1243 PARAMS ((struct bfd_link_info
*, bfd_vma
, bfd_vma
));
1244 extern boolean bfd_elf64_link_create_dynamic_sections
1245 PARAMS ((bfd
*, struct bfd_link_info
*));
1246 extern Elf_Internal_Rela
*_bfd_elf64_link_read_relocs
1247 PARAMS ((bfd
*, asection
*, PTR
, Elf_Internal_Rela
*, boolean
));
1249 #define bfd_elf32_link_record_dynamic_symbol \
1250 _bfd_elf_link_record_dynamic_symbol
1251 #define bfd_elf64_link_record_dynamic_symbol \
1252 _bfd_elf_link_record_dynamic_symbol
1254 boolean _bfd_elf32_link_record_local_dynamic_symbol
1255 PARAMS ((struct bfd_link_info
*, bfd
*, long));
1256 boolean _bfd_elf64_link_record_local_dynamic_symbol
1257 PARAMS ((struct bfd_link_info
*, bfd
*, long));
1259 extern boolean _bfd_elf_close_and_cleanup
PARAMS ((bfd
*));
1260 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
1261 PARAMS ((bfd
*, arelent
*, struct symbol_cache_entry
*, PTR
,
1262 asection
*, bfd
*, char **));
1264 boolean _bfd_elf32_gc_sections
1265 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1266 boolean _bfd_elf32_gc_common_finalize_got_offsets
1267 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1268 boolean _bfd_elf32_gc_common_final_link
1269 PARAMS ((bfd
*, struct bfd_link_info
*));
1270 boolean _bfd_elf32_gc_record_vtinherit
1271 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1272 boolean _bfd_elf32_gc_record_vtentry
1273 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1275 boolean _bfd_elf64_gc_sections
1276 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1277 boolean _bfd_elf64_gc_common_finalize_got_offsets
1278 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1279 boolean _bfd_elf64_gc_common_final_link
1280 PARAMS ((bfd
*, struct bfd_link_info
*));
1281 boolean _bfd_elf64_gc_record_vtinherit
1282 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1283 boolean _bfd_elf64_gc_record_vtentry
1284 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1286 /* MIPS ELF specific routines. */
1288 extern boolean _bfd_mips_elf_object_p
PARAMS ((bfd
*));
1289 extern boolean _bfd_mips_elf_section_from_shdr
1290 PARAMS ((bfd
*, Elf_Internal_Shdr
*, char *));
1291 extern boolean _bfd_mips_elf_fake_sections
1292 PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*));
1293 extern boolean _bfd_mips_elf_section_from_bfd_section
1294 PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*, int *));
1295 extern boolean _bfd_mips_elf_section_processing
1296 PARAMS ((bfd
*, Elf_Internal_Shdr
*));
1297 extern void _bfd_mips_elf_symbol_processing
PARAMS ((bfd
*, asymbol
*));
1298 extern boolean _bfd_mips_elf_read_ecoff_info
1299 PARAMS ((bfd
*, asection
*, struct ecoff_debug_info
*));
1300 extern void _bfd_mips_elf_final_write_processing
PARAMS ((bfd
*, boolean
));
1301 extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc
1302 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1303 extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc
1304 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1305 extern bfd_reloc_status_type _bfd_mips_elf_gprel16_reloc
1306 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1307 extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc
1308 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1309 extern bfd_reloc_status_type _bfd_mips_elf_gprel32_reloc
1310 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1311 extern boolean _bfd_mips_elf_set_private_flags
PARAMS ((bfd
*, flagword
));
1312 extern boolean _bfd_mips_elf_copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
1313 extern boolean _bfd_mips_elf_merge_private_bfd_data
PARAMS ((bfd
*, bfd
*));
1314 extern boolean _bfd_mips_elf_find_nearest_line
1315 PARAMS ((bfd
*, asection
*, asymbol
**, bfd_vma
, const char **,
1316 const char **, unsigned int *));
1317 extern boolean _bfd_mips_elf_set_section_contents
1318 PARAMS ((bfd
*, asection
*, PTR
, file_ptr
, bfd_size_type
));
1319 extern boolean _bfd_mips_elf_create_dynamic_sections
1320 PARAMS ((bfd
*, struct bfd_link_info
*));
1321 extern boolean _bfd_mips_elf_add_symbol_hook
1322 PARAMS ((bfd
*, struct bfd_link_info
*, const Elf_Internal_Sym
*,
1323 const char **, flagword
*, asection
**, bfd_vma
*));
1324 extern boolean _bfd_mips_elf_adjust_dynamic_symbol
1325 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
1326 extern boolean _bfd_mips_elf_finish_dynamic_symbol
1327 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
1328 Elf_Internal_Sym
*));
1329 extern boolean _bfd_mips_elf_finish_dynamic_sections
1330 PARAMS ((bfd
*, struct bfd_link_info
*));
1331 extern asection
* _bfd_mips_elf_gc_mark_hook
1332 PARAMS ((bfd
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
1333 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
1334 extern boolean _bfd_mips_elf_gc_sweep_hook
1335 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
1336 const Elf_Internal_Rela
*));
1337 extern boolean _bfd_mips_elf_always_size_sections
1338 PARAMS ((bfd
*, struct bfd_link_info
*));
1339 extern boolean _bfd_mips_elf_size_dynamic_sections
1340 PARAMS ((bfd
*, struct bfd_link_info
*));
1341 extern boolean _bfd_mips_elf_check_relocs
1342 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
1343 const Elf_Internal_Rela
*));
1344 extern struct bfd_link_hash_table
*_bfd_mips_elf_link_hash_table_create
1346 extern boolean _bfd_mips_elf_print_private_bfd_data
1347 PARAMS ((bfd
*, PTR
));
1348 extern boolean _bfd_mips_elf_link_output_symbol_hook
1349 PARAMS ((bfd
*, struct bfd_link_info
*, const char *, Elf_Internal_Sym
*,
1351 extern boolean _bfd_mips_elf_final_link
1352 PARAMS ((bfd
*, struct bfd_link_info
*));
1353 extern int _bfd_mips_elf_additional_program_headers
PARAMS ((bfd
*));
1354 extern boolean _bfd_mips_elf_modify_segment_map
PARAMS ((bfd
*));
1355 extern boolean _bfd_mips_elf_relocate_section
1356 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
1357 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
1359 /* SH ELF specific routine. */
1361 extern boolean _sh_elf_set_mach_from_flags
PARAMS ((bfd
*));
1363 #endif /* _LIBELF_H_ */