1 /* BFD back-end data structures for ELF files.
2 Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 1999 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
;
248 /* Look up an entry in an ELF linker hash table. */
250 #define elf_link_hash_lookup(table, string, create, copy, follow) \
251 ((struct elf_link_hash_entry *) \
252 bfd_link_hash_lookup (&(table)->root, (string), (create), \
255 /* Traverse an ELF linker hash table. */
257 #define elf_link_hash_traverse(table, func, info) \
258 (bfd_link_hash_traverse \
260 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
263 /* Get the ELF linker hash table from a link_info structure. */
265 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
267 /* Constant information held for an ELF backend. */
269 struct elf_size_info
{
270 unsigned char sizeof_ehdr
, sizeof_phdr
, sizeof_shdr
;
271 unsigned char sizeof_rel
, sizeof_rela
, sizeof_sym
, sizeof_dyn
, sizeof_note
;
273 /* The size of entries in the .hash section. */
274 unsigned char sizeof_hash_entry
;
276 /* The number of internal relocations to allocate per external
278 unsigned char int_rels_per_ext_rel
;
280 unsigned char arch_size
, file_align
;
281 unsigned char elfclass
, ev_current
;
282 int (*write_out_phdrs
) PARAMS ((bfd
*, const Elf_Internal_Phdr
*, int));
283 boolean (*write_shdrs_and_ehdr
) PARAMS ((bfd
*));
284 void (*write_relocs
) PARAMS ((bfd
*, asection
*, PTR
));
285 void (*swap_symbol_out
) PARAMS ((bfd
*, const Elf_Internal_Sym
*, PTR
));
286 boolean (*slurp_reloc_table
)
287 PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
288 long (*slurp_symbol_table
) PARAMS ((bfd
*, asymbol
**, boolean
));
289 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
290 void (*swap_dyn_out
) PARAMS ((bfd
*, const Elf_Internal_Dyn
*, PTR
));
292 /* This function, if defined, is called to swap in a REL
293 relocation. If an external relocation corresponds to more than
294 one internal relocation, then all relocations are swapped in at
296 void (*swap_reloc_in
)
297 PARAMS ((bfd
*, const bfd_byte
*, Elf_Internal_Rel
*));
299 /* This function, if defined, is called to swap out a REL
301 void (*swap_reloc_out
)
302 PARAMS ((bfd
*, const Elf_Internal_Rel
*, bfd_byte
*));
304 /* This function, if defined, is called to swap in a RELA
305 relocation. If an external relocation corresponds to more than
306 one internal relocation, then all relocations are swapped in at
308 void (*swap_reloca_in
)
309 PARAMS ((bfd
*, const bfd_byte
*, Elf_Internal_Rela
*));
311 /* This function, if defined, is called to swap out a RELA
313 void (*swap_reloca_out
)
314 PARAMS ((bfd
*, const Elf_Internal_Rela
*, bfd_byte
*));
318 #define elf_symbol_from(ABFD,S) \
319 (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
320 && (S)->the_bfd->tdata.elf_obj_data != 0) \
321 ? (elf_symbol_type *) (S) \
324 struct elf_backend_data
326 /* The architecture for this backend. */
327 enum bfd_architecture arch
;
329 /* The ELF machine code (EM_xxxx) for this backend. */
330 int elf_machine_code
;
332 /* The maximum page size for this backend. */
335 /* A function to translate an ELF RELA relocation to a BFD arelent
337 void (*elf_info_to_howto
) PARAMS ((bfd
*, arelent
*,
338 Elf_Internal_Rela
*));
340 /* A function to translate an ELF REL relocation to a BFD arelent
342 void (*elf_info_to_howto_rel
) PARAMS ((bfd
*, arelent
*,
343 Elf_Internal_Rel
*));
345 /* A function to determine whether a symbol is global when
346 partitioning the symbol table into local and global symbols.
347 This should be NULL for most targets, in which case the correct
348 thing will be done. MIPS ELF, at least on the Irix 5, has
349 special requirements. */
350 boolean (*elf_backend_sym_is_global
) PARAMS ((bfd
*, asymbol
*));
352 /* The remaining functions are hooks which are called only if they
355 /* A function to permit a backend specific check on whether a
356 particular BFD format is relevant for an object file, and to
357 permit the backend to set any global information it wishes. When
358 this is called elf_elfheader is set, but anything else should be
359 used with caution. If this returns false, the check_format
360 routine will return a bfd_error_wrong_format error. */
361 boolean (*elf_backend_object_p
) PARAMS ((bfd
*));
363 /* A function to do additional symbol processing when reading the
364 ELF symbol table. This is where any processor-specific special
365 section indices are handled. */
366 void (*elf_backend_symbol_processing
) PARAMS ((bfd
*, asymbol
*));
368 /* A function to do additional symbol processing after reading the
369 entire ELF symbol table. */
370 boolean (*elf_backend_symbol_table_processing
) PARAMS ((bfd
*,
374 /* A function to set the type of the info field. Processor-specific
375 types should be handled here. */
376 int (*elf_backend_get_symbol_type
) PARAMS (( Elf_Internal_Sym
*, int));
378 /* A function to do additional processing on the ELF section header
379 just before writing it out. This is used to set the flags and
380 type fields for some sections, or to actually write out data for
382 boolean (*elf_backend_section_processing
) PARAMS ((bfd
*,
383 Elf32_Internal_Shdr
*));
385 /* A function to handle unusual section types when creating BFD
386 sections from ELF sections. */
387 boolean (*elf_backend_section_from_shdr
) PARAMS ((bfd
*,
388 Elf32_Internal_Shdr
*,
391 /* A function to handle unusual program segment types when creating BFD
392 sections from ELF program segments. */
393 boolean (*elf_backend_section_from_phdr
) PARAMS ((bfd
*,
394 Elf32_Internal_Phdr
*,
397 /* A function to set up the ELF section header for a BFD section in
398 preparation for writing it out. This is where the flags and type
399 fields are set for unusual sections. */
400 boolean (*elf_backend_fake_sections
) PARAMS ((bfd
*, Elf32_Internal_Shdr
*,
403 /* A function to get the ELF section index for a BFD section. If
404 this returns true, the section was found. If it is a normal ELF
405 section, *RETVAL should be left unchanged. If it is not a normal
406 ELF section *RETVAL should be set to the SHN_xxxx index. */
407 boolean (*elf_backend_section_from_bfd_section
)
408 PARAMS ((bfd
*, Elf32_Internal_Shdr
*, asection
*, int *retval
));
410 /* If this field is not NULL, it is called by the add_symbols phase
411 of a link just before adding a symbol to the global linker hash
412 table. It may modify any of the fields as it wishes. If *NAME
413 is set to NULL, the symbol will be skipped rather than being
414 added to the hash table. This function is responsible for
415 handling all processor dependent symbol bindings and section
416 indices, and must set at least *FLAGS and *SEC for each processor
417 dependent case; failure to do so will cause a link error. */
418 boolean (*elf_add_symbol_hook
)
419 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
,
420 const Elf_Internal_Sym
*, const char **name
,
421 flagword
*flags
, asection
**sec
, bfd_vma
*value
));
423 /* If this field is not NULL, it is called by the elf_link_output_sym
424 phase of a link for each symbol which will appear in the object file. */
425 boolean (*elf_backend_link_output_symbol_hook
)
426 PARAMS ((bfd
*, struct bfd_link_info
*info
, const char *,
427 Elf_Internal_Sym
*, asection
*));
429 /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
430 linker the first time it encounters a dynamic object in the link.
431 This function must create any sections required for dynamic
432 linking. The ABFD argument is a dynamic object. The .interp,
433 .dynamic, .dynsym, .dynstr, and .hash functions have already been
434 created, and this function may modify the section flags if
435 desired. This function will normally create the .got and .plt
436 sections, but different backends have different requirements. */
437 boolean (*elf_backend_create_dynamic_sections
)
438 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
440 /* The CHECK_RELOCS function is called by the add_symbols phase of
441 the ELF backend linker. It is called once for each section with
442 relocs of an object file, just after the symbols for the object
443 file have been added to the global linker hash table. The
444 function must look through the relocs and do any special handling
445 required. This generally means allocating space in the global
446 offset table, and perhaps allocating space for a reloc. The
447 relocs are always passed as Rela structures; if the section
448 actually uses Rel structures, the r_addend field will always be
450 boolean (*check_relocs
)
451 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
452 const Elf_Internal_Rela
*relocs
));
454 /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
455 linker for every symbol which is defined by a dynamic object and
456 referenced by a regular object. This is called after all the
457 input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
458 function has been called. The hash table entry should be
459 bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
460 defined in a section from a dynamic object. Dynamic object
461 sections are not included in the final link, and this function is
462 responsible for changing the value to something which the rest of
463 the link can deal with. This will normally involve adding an
464 entry to the .plt or .got or some such section, and setting the
465 symbol to point to that. */
466 boolean (*elf_backend_adjust_dynamic_symbol
)
467 PARAMS ((struct bfd_link_info
*info
, struct elf_link_hash_entry
*h
));
469 /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
470 after all the linker input files have been seen but before the
471 section sizes have been set. This is called after
472 ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */
473 boolean (*elf_backend_always_size_sections
)
474 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
));
476 /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
477 linker after all the linker input files have been seen but before
478 the sections sizes have been set. This is called after
479 ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
480 It is only called when linking against a dynamic object. It must
481 set the sizes of the dynamic sections, and may fill in their
482 contents as well. The generic ELF linker can handle the .dynsym,
483 .dynstr and .hash sections. This function must handle the
484 .interp section and any sections created by the
485 CREATE_DYNAMIC_SECTIONS entry point. */
486 boolean (*elf_backend_size_dynamic_sections
)
487 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
));
489 /* The RELOCATE_SECTION function is called by the ELF backend linker
490 to handle the relocations for a section.
492 The relocs are always passed as Rela structures; if the section
493 actually uses Rel structures, the r_addend field will always be
496 This function is responsible for adjust the section contents as
497 necessary, and (if using Rela relocs and generating a
498 relocateable output file) adjusting the reloc addend as
501 This function does not have to worry about setting the reloc
502 address or the reloc symbol index.
504 LOCAL_SYMS is a pointer to the swapped in local symbols.
506 LOCAL_SECTIONS is an array giving the section in the input file
507 corresponding to the st_shndx field of each local symbol.
509 The global hash table entry for the global symbols can be found
510 via elf_sym_hashes (input_bfd).
512 When generating relocateable output, this function must handle
513 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
514 going to be the section symbol corresponding to the output
515 section, which means that the addend must be adjusted
517 boolean (*elf_backend_relocate_section
)
518 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
,
519 bfd
*input_bfd
, asection
*input_section
, bfd_byte
*contents
,
520 Elf_Internal_Rela
*relocs
, Elf_Internal_Sym
*local_syms
,
521 asection
**local_sections
));
523 /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
524 linker just before it writes a symbol out to the .dynsym section.
525 The processor backend may make any required adjustment to the
526 symbol. It may also take the opportunity to set contents of the
527 dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
528 all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
529 on those symbols which are defined by a dynamic object. */
530 boolean (*elf_backend_finish_dynamic_symbol
)
531 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
,
532 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*sym
));
534 /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
535 linker just before it writes all the dynamic sections out to the
536 output file. The FINISH_DYNAMIC_SYMBOL will have been called on
537 all dynamic symbols. */
538 boolean (*elf_backend_finish_dynamic_sections
)
539 PARAMS ((bfd
*output_bfd
, struct bfd_link_info
*info
));
541 /* A function to do any beginning processing needed for the ELF file
542 before building the ELF headers and computing file positions. */
543 void (*elf_backend_begin_write_processing
)
544 PARAMS ((bfd
*, struct bfd_link_info
*));
546 /* A function to do any final processing needed for the ELF file
547 before writing it out. The LINKER argument is true if this BFD
548 was created by the ELF backend linker. */
549 void (*elf_backend_final_write_processing
)
550 PARAMS ((bfd
*, boolean linker
));
552 /* This function is called by get_program_header_size. It should
553 return the number of additional program segments which this BFD
554 will need. It should return -1 on error. */
555 int (*elf_backend_additional_program_headers
) PARAMS ((bfd
*));
557 /* This function is called to modify an existing segment map in a
558 backend specific fashion. */
559 boolean (*elf_backend_modify_segment_map
) PARAMS ((bfd
*));
561 /* This function is called during section gc to discover the section a
562 particular relocation refers to. It need not be defined for hosts
563 that have no queer relocation types. */
564 asection
* (*gc_mark_hook
)
565 PARAMS ((bfd
*abfd
, struct bfd_link_info
*, Elf_Internal_Rela
*,
566 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*));
568 /* This function, if defined, is called during the sweep phase of gc
569 in order that a backend might update any data structures it might
571 boolean (*gc_sweep_hook
)
572 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
, asection
*o
,
573 const Elf_Internal_Rela
*relocs
));
575 /* This function, if defined, is called after the ELF headers have
576 been created. This allows for things like the OS and ABI versions
578 void (*elf_backend_post_process_headers
)
579 PARAMS ((bfd
*, struct bfd_link_info
*));
581 /* This function, if defined, prints a symbol to file and returns the
582 name of the symbol to be printed. It should return NULL to fall
583 back to default symbol printing. */
584 const char *(*elf_backend_print_symbol_all
)
585 PARAMS ((bfd
*, PTR
, asymbol
*));
587 /* This function, if defined, is called after all local symbols and
588 global symbols converted to locals are emited into the symtab
589 section. It allows the backend to emit special global symbols
590 not handled in the hash table. */
591 boolean (*elf_backend_output_arch_syms
)
592 PARAMS ((bfd
*, struct bfd_link_info
*, PTR
,
593 boolean (*) PARAMS ((PTR
, const char *,
594 Elf_Internal_Sym
*, asection
*))));
596 /* The swapping table to use when dealing with ECOFF information.
597 Used for the MIPS ELF .mdebug section. */
598 const struct ecoff_debug_swap
*elf_backend_ecoff_debug_swap
;
600 /* Alternate EM_xxxx machine codes for this backend. */
601 int elf_machine_alt1
;
602 int elf_machine_alt2
;
604 const struct elf_size_info
*s
;
606 /* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the
608 bfd_vma got_symbol_offset
;
610 /* The size in bytes of the headers for the GOT and PLT. This includes
611 the so-called reserved entries on some systems. */
612 bfd_vma got_header_size
;
613 bfd_vma plt_header_size
;
615 /* This is true if the linker should act like collect and gather
616 global constructors and destructors by name. This is true for
617 MIPS ELF because the Irix 5 tools can not handle the .init
619 unsigned collect
: 1;
621 /* This is true if the linker should ignore changes to the type of a
622 symbol. This is true for MIPS ELF because some Irix 5 objects
623 record undefined functions as STT_OBJECT although the definitions
625 unsigned type_change_ok
: 1;
627 /* Whether the backend may use REL relocations. (Some backends use
628 both REL and RELA relocations, and this flag is set for those
630 unsigned may_use_rel_p
: 1;
632 /* Whether the backend may use RELA relocations. (Some backends use
633 both REL and RELA relocations, and this flag is set for those
635 unsigned may_use_rela_p
: 1;
637 /* Whether the default relocation type is RELA. If a backend with
638 this flag set wants REL relocations for a particular section,
639 it must note that explicitly. Similarly, if this flag is clear,
640 and the backend wants RELA relocations for a particular
642 unsigned default_use_rela_p
: 1;
644 /* True if addresses "naturally" sign extend. This is used when
645 swapping in from Elf32 when BFD64. */
646 unsigned sign_extend_vma
: 1;
648 unsigned want_got_plt
: 1;
649 unsigned plt_readonly
: 1;
650 unsigned want_plt_sym
: 1;
651 unsigned plt_not_loaded
: 1;
652 unsigned plt_alignment
: 4;
653 unsigned can_gc_sections
: 1;
654 unsigned want_dynbss
: 1;
657 /* Information stored for each BFD section in an ELF file. This
658 structure is allocated by elf_new_section_hook. */
660 struct bfd_elf_section_data
662 /* The ELF header for this section. */
663 Elf_Internal_Shdr this_hdr
;
664 /* The ELF header for the reloc section associated with this
666 Elf_Internal_Shdr rel_hdr
;
667 /* If there is a second reloc section associated with this section,
668 as can happen on Irix 6, this field points to the header. */
669 Elf_Internal_Shdr
*rel_hdr2
;
670 /* The number of relocations currently assigned to REL_HDR. */
671 unsigned int rel_count
;
672 /* The number of relocations currently assigned to REL_HDR2. */
673 unsigned int rel_count2
;
674 /* The ELF section number of this section. Only used for an output
677 /* The ELF section number of the reloc section indicated by
678 REL_HDR if any. Only used for an output file. */
680 /* The ELF section number of the reloc section indicated by
681 REL_HDR2 if any. Only used for an output file. */
683 /* Used by the backend linker to store the symbol hash table entries
684 associated with relocs against global symbols. */
685 struct elf_link_hash_entry
**rel_hashes
;
686 /* A pointer to the swapped relocs. If the section uses REL relocs,
687 rather than RELA, all the r_addend fields will be zero. This
688 pointer may be NULL. It is used by the backend linker. */
689 Elf_Internal_Rela
*relocs
;
690 /* Used by the backend linker when generating a shared library to
691 record the dynamic symbol index for a section symbol
692 corresponding to this section. A value of 0 means that there is
693 no dynamic symbol for this section. */
695 /* A pointer used for .stab linking optimizations. */
697 /* A pointer available for the processor specific ELF backend. */
699 /* Nonzero if this section uses RELA relocations, rather than REL. */
700 unsigned int use_rela_p
:1;
703 #define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd)
705 #define get_elf_backend_data(abfd) \
706 ((struct elf_backend_data *) (abfd)->xvec->backend_data)
708 /* Enumeration to specify the special section. */
709 typedef enum elf_linker_section_enum
711 LINKER_SECTION_UNKNOWN
, /* not used */
712 LINKER_SECTION_GOT
, /* .got section for global offset pointers */
713 LINKER_SECTION_PLT
, /* .plt section for generated procedure stubs */
714 LINKER_SECTION_SDATA
, /* .sdata/.sbss section for PowerPC */
715 LINKER_SECTION_SDATA2
, /* .sdata2/.sbss2 section for PowerPC */
716 LINKER_SECTION_MAX
/* # of linker sections */
717 } elf_linker_section_enum_t
;
719 /* Sections created by the linker. */
721 typedef struct elf_linker_section
723 char *name
; /* name of the section */
724 char *rel_name
; /* name of the associated .rel{,a}. section */
725 char *bss_name
; /* name of a related .bss section */
726 char *sym_name
; /* name of symbol to reference this section */
727 asection
*section
; /* pointer to the section */
728 asection
*bss_section
; /* pointer to the bss section associated with this */
729 asection
*rel_section
; /* pointer to the relocations needed for this section */
730 struct elf_link_hash_entry
*sym_hash
; /* pointer to the created symbol hash value */
731 bfd_vma initial_size
; /* initial size before any linker generated allocations */
732 bfd_vma sym_offset
; /* offset of symbol from beginning of section */
733 bfd_vma hole_size
; /* size of reserved address hole in allocation */
734 bfd_vma hole_offset
; /* current offset for the hole */
735 bfd_vma max_hole_offset
; /* maximum offset for the hole */
736 elf_linker_section_enum_t which
; /* which section this is */
737 boolean hole_written_p
; /* whether the hole has been initialized */
738 unsigned int alignment
; /* alignment for the section */
739 flagword flags
; /* flags to use to create the section */
740 } elf_linker_section_t
;
742 /* Linked list of allocated pointer entries. This hangs off of the symbol lists, and
743 provides allows us to return different pointers, based on different addend's. */
745 typedef struct elf_linker_section_pointers
747 struct elf_linker_section_pointers
*next
; /* next allocated pointer for this symbol */
748 bfd_vma offset
; /* offset of pointer from beginning of section */
749 bfd_signed_vma addend
; /* addend used */
750 elf_linker_section_enum_t which
; /* which linker section this is */
751 boolean written_address_p
; /* whether address was written yet */
752 } elf_linker_section_pointers_t
;
754 /* Some private data is stashed away for future use using the tdata pointer
755 in the bfd structure. */
759 Elf_Internal_Ehdr elf_header
[1]; /* Actual data, but ref like ptr */
760 Elf_Internal_Shdr
**elf_sect_ptr
;
761 Elf_Internal_Phdr
*phdr
;
762 struct elf_segment_map
*segment_map
;
763 struct bfd_strtab_hash
*strtab_ptr
;
766 asymbol
**section_syms
; /* STT_SECTION symbols for each section */
767 Elf_Internal_Shdr symtab_hdr
;
768 Elf_Internal_Shdr shstrtab_hdr
;
769 Elf_Internal_Shdr strtab_hdr
;
770 Elf_Internal_Shdr dynsymtab_hdr
;
771 Elf_Internal_Shdr dynstrtab_hdr
;
772 Elf_Internal_Shdr dynversym_hdr
;
773 Elf_Internal_Shdr dynverref_hdr
;
774 Elf_Internal_Shdr dynverdef_hdr
;
775 unsigned int symtab_section
, shstrtab_section
;
776 unsigned int strtab_section
, dynsymtab_section
;
777 unsigned int dynversym_section
, dynverdef_section
, dynverref_section
;
778 file_ptr next_file_pos
;
780 /* we don't need these inside bfd anymore, and I think
781 these weren't used outside bfd. */
782 void *prstatus
; /* The raw /proc prstatus structure */
783 void *prpsinfo
; /* The raw /proc prpsinfo structure */
785 bfd_vma gp
; /* The gp value (MIPS only, for now) */
786 unsigned int gp_size
; /* The gp size (MIPS only, for now) */
788 /* Information grabbed from an elf core file. */
795 /* This is set to true if the object was created by the backend
799 /* A mapping from external symbols to entries in the linker hash
800 table, used when linking. This is indexed by the symbol index
801 minus the sh_info field of the symbol table header. */
802 struct elf_link_hash_entry
**sym_hashes
;
804 /* A mapping from local symbols to offsets into the global offset
805 table, used when linking. This is indexed by the symbol index.
806 Like for the globals, we use a union and two names primarily to
807 document the intent of any particular piece of code. The field
808 should be used as a count until size_dynamic_sections, at which
809 point the contents of the .got is fixed. Afterward, if an entry
810 is -1, then the symbol does not require a global offset table entry. */
813 bfd_signed_vma
*refcounts
;
817 /* A mapping from local symbols to offsets into the various linker
818 sections added. This is index by the symbol index. */
819 elf_linker_section_pointers_t
**linker_section_pointers
;
821 /* The linker ELF emulation code needs to let the backend ELF linker
822 know what filename should be used for a dynamic object if the
823 dynamic object is found using a search. The emulation code then
824 sometimes needs to know what name was actually used. Until the
825 file has been added to the linker symbol table, this field holds
826 the name the linker wants. After it has been added, it holds the
827 name actually used, which will be the DT_SONAME entry if there is
831 /* Irix 5 often screws up the symbol table, sorting local symbols
832 after global symbols. This flag is set if the symbol table in
833 this BFD appears to be screwed up. If it is, we ignore the
834 sh_info field in the symbol table header, and always read all the
838 /* Records the result of `get_program_header_size'. */
839 bfd_size_type program_header_size
;
841 /* Used by find_nearest_line entry point. */
844 /* Used by MIPS ELF find_nearest_line entry point. The structure
845 could be included directly in this one, but there's no point to
846 wasting the memory just for the infrequently called
847 find_nearest_line. */
848 struct mips_elf_find_line
*find_line_info
;
850 /* A place to stash dwarf1 info for this bfd. */
851 struct dwarf1_debug
*dwarf1_find_line_info
;
853 /* A place to stash dwarf2 info for this bfd. */
854 struct dwarf2_debug
*dwarf2_find_line_info
;
856 /* An array of stub sections indexed by symbol number, used by the
857 MIPS ELF linker. FIXME: We should figure out some way to only
858 include this field for a MIPS ELF target. */
859 asection
**local_stubs
;
861 /* Used to determine if the e_flags field has been initialized */
864 /* Number of symbol version definitions we are about to emit. */
865 unsigned int cverdefs
;
867 /* Number of symbol version references we are about to emit. */
868 unsigned int cverrefs
;
870 /* Symbol version definitions in external objects. */
871 Elf_Internal_Verdef
*verdef
;
873 /* Symbol version references to external objects. */
874 Elf_Internal_Verneed
*verref
;
876 /* Linker sections that we are interested in. */
877 struct elf_linker_section
*linker_section
[ (int)LINKER_SECTION_MAX
];
880 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
881 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
882 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
883 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr)
884 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
885 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
886 #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
887 #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
888 #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
889 #define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals)
890 #define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals)
891 #define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms)
892 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
893 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
894 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
895 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
896 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
897 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
898 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
899 #define elf_local_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers)
900 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
901 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
902 #define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init)
903 #define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n])
905 extern void _bfd_elf_swap_verdef_in
906 PARAMS ((bfd
*, const Elf_External_Verdef
*, Elf_Internal_Verdef
*));
907 extern void _bfd_elf_swap_verdef_out
908 PARAMS ((bfd
*, const Elf_Internal_Verdef
*, Elf_External_Verdef
*));
909 extern void _bfd_elf_swap_verdaux_in
910 PARAMS ((bfd
*, const Elf_External_Verdaux
*, Elf_Internal_Verdaux
*));
911 extern void _bfd_elf_swap_verdaux_out
912 PARAMS ((bfd
*, const Elf_Internal_Verdaux
*, Elf_External_Verdaux
*));
913 extern void _bfd_elf_swap_verneed_in
914 PARAMS ((bfd
*, const Elf_External_Verneed
*, Elf_Internal_Verneed
*));
915 extern void _bfd_elf_swap_verneed_out
916 PARAMS ((bfd
*, const Elf_Internal_Verneed
*, Elf_External_Verneed
*));
917 extern void _bfd_elf_swap_vernaux_in
918 PARAMS ((bfd
*, const Elf_External_Vernaux
*, Elf_Internal_Vernaux
*));
919 extern void _bfd_elf_swap_vernaux_out
920 PARAMS ((bfd
*, const Elf_Internal_Vernaux
*, Elf_External_Vernaux
*));
921 extern void _bfd_elf_swap_versym_in
922 PARAMS ((bfd
*, const Elf_External_Versym
*, Elf_Internal_Versym
*));
923 extern void _bfd_elf_swap_versym_out
924 PARAMS ((bfd
*, const Elf_Internal_Versym
*, Elf_External_Versym
*));
926 extern int _bfd_elf_section_from_bfd_section
PARAMS ((bfd
*, asection
*));
927 extern char *bfd_elf_string_from_elf_section
928 PARAMS ((bfd
*, unsigned, unsigned));
929 extern char *bfd_elf_get_str_section
PARAMS ((bfd
*, unsigned));
931 extern boolean _bfd_elf_print_private_bfd_data
PARAMS ((bfd
*, PTR
));
932 extern void bfd_elf_print_symbol
PARAMS ((bfd
*, PTR
, asymbol
*,
933 bfd_print_symbol_type
));
934 #define elf_string_from_elf_strtab(abfd,strindex) \
935 bfd_elf_string_from_elf_section(abfd,elf_elfheader(abfd)->e_shstrndx,strindex)
937 #define bfd_elf32_print_symbol bfd_elf_print_symbol
938 #define bfd_elf64_print_symbol bfd_elf_print_symbol
940 extern unsigned long bfd_elf_hash
PARAMS ((const char *));
942 extern bfd_reloc_status_type bfd_elf_generic_reloc
PARAMS ((bfd
*,
949 extern boolean bfd_elf_mkobject
PARAMS ((bfd
*));
950 extern boolean bfd_elf_mkcorefile
PARAMS ((bfd
*));
951 extern Elf_Internal_Shdr
*bfd_elf_find_section
PARAMS ((bfd
*, char *));
952 extern boolean _bfd_elf_make_section_from_shdr
953 PARAMS ((bfd
*abfd
, Elf_Internal_Shdr
*hdr
, const char *name
));
954 extern boolean _bfd_elf_make_section_from_phdr
955 PARAMS ((bfd
*abfd
, Elf_Internal_Phdr
*hdr
, int index
, const char *typename
));
956 extern struct bfd_hash_entry
*_bfd_elf_link_hash_newfunc
957 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
958 extern struct bfd_link_hash_table
*_bfd_elf_link_hash_table_create
960 extern boolean _bfd_elf_link_hash_table_init
961 PARAMS ((struct elf_link_hash_table
*, bfd
*,
962 struct bfd_hash_entry
*(*) (struct bfd_hash_entry
*,
963 struct bfd_hash_table
*,
965 extern boolean _bfd_elf_slurp_version_tables
PARAMS ((bfd
*));
967 extern boolean _bfd_elf_copy_private_symbol_data
968 PARAMS ((bfd
*, asymbol
*, bfd
*, asymbol
*));
969 extern boolean _bfd_elf_copy_private_section_data
970 PARAMS ((bfd
*, asection
*, bfd
*, asection
*));
971 extern boolean _bfd_elf_write_object_contents
PARAMS ((bfd
*));
972 extern boolean _bfd_elf_write_corefile_contents
PARAMS ((bfd
*));
973 extern boolean _bfd_elf_set_section_contents
PARAMS ((bfd
*, sec_ptr
, PTR
,
976 extern long _bfd_elf_get_symtab_upper_bound
PARAMS ((bfd
*));
977 extern long _bfd_elf_get_symtab
PARAMS ((bfd
*, asymbol
**));
978 extern long _bfd_elf_get_dynamic_symtab_upper_bound
PARAMS ((bfd
*));
979 extern long _bfd_elf_canonicalize_dynamic_symtab
PARAMS ((bfd
*, asymbol
**));
980 extern long _bfd_elf_get_reloc_upper_bound
PARAMS ((bfd
*, sec_ptr
));
981 extern long _bfd_elf_canonicalize_reloc
PARAMS ((bfd
*, sec_ptr
,
982 arelent
**, asymbol
**));
983 extern long _bfd_elf_get_dynamic_reloc_upper_bound
PARAMS ((bfd
*));
984 extern long _bfd_elf_canonicalize_dynamic_reloc
PARAMS ((bfd
*, arelent
**,
986 extern asymbol
*_bfd_elf_make_empty_symbol
PARAMS ((bfd
*));
987 extern void _bfd_elf_get_symbol_info
PARAMS ((bfd
*, asymbol
*,
989 extern boolean _bfd_elf_is_local_label_name
PARAMS ((bfd
*, const char *));
990 extern alent
*_bfd_elf_get_lineno
PARAMS ((bfd
*, asymbol
*));
991 extern boolean _bfd_elf_set_arch_mach
PARAMS ((bfd
*, enum bfd_architecture
,
993 extern boolean _bfd_elf_find_nearest_line
PARAMS ((bfd
*, asection
*,
995 bfd_vma
, CONST
char **,
998 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
999 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
1000 extern int _bfd_elf_sizeof_headers
PARAMS ((bfd
*, boolean
));
1001 extern boolean _bfd_elf_new_section_hook
PARAMS ((bfd
*, asection
*));
1002 extern boolean _bfd_elf_init_reloc_shdr
1003 PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*, boolean
));
1005 /* If the target doesn't have reloc handling written yet: */
1006 extern void _bfd_elf_no_info_to_howto
PARAMS ((bfd
*, arelent
*,
1007 Elf_Internal_Rela
*));
1009 extern boolean bfd_section_from_shdr
PARAMS ((bfd
*, unsigned int shindex
));
1010 extern boolean bfd_section_from_phdr
PARAMS ((bfd
*, Elf_Internal_Phdr
*, int));
1012 extern int _bfd_elf_symbol_from_bfd_symbol
PARAMS ((bfd
*, asymbol
**));
1014 asection
*bfd_section_from_elf_index
PARAMS ((bfd
*, unsigned int));
1015 boolean _bfd_elf_create_dynamic_sections
PARAMS ((bfd
*,
1016 struct bfd_link_info
*));
1017 struct bfd_strtab_hash
*_bfd_elf_stringtab_init
PARAMS ((void));
1019 _bfd_elf_link_record_dynamic_symbol
PARAMS ((struct bfd_link_info
*,
1020 struct elf_link_hash_entry
*));
1022 _bfd_elf_link_lookup_local_dynindx
PARAMS ((struct bfd_link_info
*,
1025 _bfd_elf_compute_section_file_positions
PARAMS ((bfd
*,
1026 struct bfd_link_info
*));
1027 void _bfd_elf_assign_file_positions_for_relocs
PARAMS ((bfd
*));
1028 file_ptr _bfd_elf_assign_file_position_for_section
PARAMS ((Elf_Internal_Shdr
*,
1032 extern boolean _bfd_elf_validate_reloc
PARAMS ((bfd
*, arelent
*));
1034 boolean _bfd_elf_create_dynamic_sections
PARAMS ((bfd
*,
1035 struct bfd_link_info
*));
1036 boolean _bfd_elf_create_got_section
PARAMS ((bfd
*,
1037 struct bfd_link_info
*));
1038 unsigned long _bfd_elf_link_renumber_dynsyms
PARAMS ((bfd
*,
1039 struct bfd_link_info
*));
1041 elf_linker_section_t
*_bfd_elf_create_linker_section
1043 struct bfd_link_info
*info
,
1044 enum elf_linker_section_enum
,
1045 elf_linker_section_t
*defaults
));
1047 elf_linker_section_pointers_t
*_bfd_elf_find_pointer_linker_section
1048 PARAMS ((elf_linker_section_pointers_t
*linker_pointers
,
1049 bfd_signed_vma addend
,
1050 elf_linker_section_enum_t which
));
1052 boolean bfd_elf32_create_pointer_linker_section
1054 struct bfd_link_info
*info
,
1055 elf_linker_section_t
*lsect
,
1056 struct elf_link_hash_entry
*h
,
1057 const Elf32_Internal_Rela
*rel
));
1059 bfd_vma bfd_elf32_finish_pointer_linker_section
1060 PARAMS ((bfd
*output_abfd
,
1062 struct bfd_link_info
*info
,
1063 elf_linker_section_t
*lsect
,
1064 struct elf_link_hash_entry
*h
,
1066 const Elf32_Internal_Rela
*rel
,
1067 int relative_reloc
));
1069 boolean bfd_elf64_create_pointer_linker_section
1071 struct bfd_link_info
*info
,
1072 elf_linker_section_t
*lsect
,
1073 struct elf_link_hash_entry
*h
,
1074 const Elf64_Internal_Rela
*rel
));
1076 bfd_vma bfd_elf64_finish_pointer_linker_section
1077 PARAMS ((bfd
*output_abfd
,
1079 struct bfd_link_info
*info
,
1080 elf_linker_section_t
*lsect
,
1081 struct elf_link_hash_entry
*h
,
1083 const Elf64_Internal_Rela
*rel
,
1084 int relative_reloc
));
1086 boolean _bfd_elf_make_linker_section_rela
1087 PARAMS ((bfd
*dynobj
,
1088 elf_linker_section_t
*lsect
,
1091 boolean _bfd_elfcore_section_from_phdr
1092 PARAMS ((bfd
*, Elf_Internal_Phdr
*, int));
1094 extern const bfd_target
*bfd_elf32_object_p
PARAMS ((bfd
*));
1095 extern const bfd_target
*bfd_elf32_core_file_p
PARAMS ((bfd
*));
1096 extern char *bfd_elf32_core_file_failing_command
PARAMS ((bfd
*));
1097 extern int bfd_elf32_core_file_failing_signal
PARAMS ((bfd
*));
1098 extern boolean bfd_elf32_core_file_matches_executable_p
PARAMS ((bfd
*,
1101 extern boolean bfd_elf32_bfd_link_add_symbols
1102 PARAMS ((bfd
*, struct bfd_link_info
*));
1103 extern boolean bfd_elf32_bfd_final_link
1104 PARAMS ((bfd
*, struct bfd_link_info
*));
1106 extern void bfd_elf32_swap_symbol_in
1107 PARAMS ((bfd
*, const Elf32_External_Sym
*, Elf_Internal_Sym
*));
1108 extern void bfd_elf32_swap_symbol_out
1109 PARAMS ((bfd
*, const Elf_Internal_Sym
*, PTR
));
1110 extern void bfd_elf32_swap_reloc_in
1111 PARAMS ((bfd
*, const Elf32_External_Rel
*, Elf_Internal_Rel
*));
1112 extern void bfd_elf32_swap_reloc_out
1113 PARAMS ((bfd
*, const Elf_Internal_Rel
*, Elf32_External_Rel
*));
1114 extern void bfd_elf32_swap_reloca_in
1115 PARAMS ((bfd
*, const Elf32_External_Rela
*, Elf_Internal_Rela
*));
1116 extern void bfd_elf32_swap_reloca_out
1117 PARAMS ((bfd
*, const Elf_Internal_Rela
*, Elf32_External_Rela
*));
1118 extern void bfd_elf32_swap_phdr_in
1119 PARAMS ((bfd
*, const Elf32_External_Phdr
*, Elf_Internal_Phdr
*));
1120 extern void bfd_elf32_swap_phdr_out
1121 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, Elf32_External_Phdr
*));
1122 extern void bfd_elf32_swap_dyn_in
1123 PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1124 extern void bfd_elf32_swap_dyn_out
1125 PARAMS ((bfd
*, const Elf_Internal_Dyn
*, PTR
));
1126 extern long bfd_elf32_slurp_symbol_table
1127 PARAMS ((bfd
*, asymbol
**, boolean
));
1128 extern boolean bfd_elf32_write_shdrs_and_ehdr
PARAMS ((bfd
*));
1129 extern int bfd_elf32_write_out_phdrs
1130 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, int));
1131 extern boolean bfd_elf32_add_dynamic_entry
1132 PARAMS ((struct bfd_link_info
*, bfd_vma
, bfd_vma
));
1133 extern boolean bfd_elf32_link_create_dynamic_sections
1134 PARAMS ((bfd
*, struct bfd_link_info
*));
1135 extern Elf_Internal_Rela
*_bfd_elf32_link_read_relocs
1136 PARAMS ((bfd
*, asection
*, PTR
, Elf_Internal_Rela
*, boolean
));
1138 extern const bfd_target
*bfd_elf64_object_p
PARAMS ((bfd
*));
1139 extern const bfd_target
*bfd_elf64_core_file_p
PARAMS ((bfd
*));
1140 extern char *bfd_elf64_core_file_failing_command
PARAMS ((bfd
*));
1141 extern int bfd_elf64_core_file_failing_signal
PARAMS ((bfd
*));
1142 extern boolean bfd_elf64_core_file_matches_executable_p
PARAMS ((bfd
*,
1144 extern boolean bfd_elf64_bfd_link_add_symbols
1145 PARAMS ((bfd
*, struct bfd_link_info
*));
1146 extern boolean bfd_elf64_bfd_final_link
1147 PARAMS ((bfd
*, struct bfd_link_info
*));
1149 extern void bfd_elf64_swap_symbol_in
1150 PARAMS ((bfd
*, const Elf64_External_Sym
*, Elf_Internal_Sym
*));
1151 extern void bfd_elf64_swap_symbol_out
1152 PARAMS ((bfd
*, const Elf_Internal_Sym
*, PTR
));
1153 extern void bfd_elf64_swap_reloc_in
1154 PARAMS ((bfd
*, const Elf64_External_Rel
*, Elf_Internal_Rel
*));
1155 extern void bfd_elf64_swap_reloc_out
1156 PARAMS ((bfd
*, const Elf_Internal_Rel
*, Elf64_External_Rel
*));
1157 extern void bfd_elf64_swap_reloca_in
1158 PARAMS ((bfd
*, const Elf64_External_Rela
*, Elf_Internal_Rela
*));
1159 extern void bfd_elf64_swap_reloca_out
1160 PARAMS ((bfd
*, const Elf_Internal_Rela
*, Elf64_External_Rela
*));
1161 extern void bfd_elf64_swap_phdr_in
1162 PARAMS ((bfd
*, const Elf64_External_Phdr
*, Elf_Internal_Phdr
*));
1163 extern void bfd_elf64_swap_phdr_out
1164 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, Elf64_External_Phdr
*));
1165 extern void bfd_elf64_swap_dyn_in
1166 PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1167 extern void bfd_elf64_swap_dyn_out
1168 PARAMS ((bfd
*, const Elf_Internal_Dyn
*, PTR
));
1169 extern long bfd_elf64_slurp_symbol_table
1170 PARAMS ((bfd
*, asymbol
**, boolean
));
1171 extern boolean bfd_elf64_write_shdrs_and_ehdr
PARAMS ((bfd
*));
1172 extern int bfd_elf64_write_out_phdrs
1173 PARAMS ((bfd
*, const Elf_Internal_Phdr
*, int));
1174 extern boolean bfd_elf64_add_dynamic_entry
1175 PARAMS ((struct bfd_link_info
*, bfd_vma
, bfd_vma
));
1176 extern boolean bfd_elf64_link_create_dynamic_sections
1177 PARAMS ((bfd
*, struct bfd_link_info
*));
1178 extern Elf_Internal_Rela
*_bfd_elf64_link_read_relocs
1179 PARAMS ((bfd
*, asection
*, PTR
, Elf_Internal_Rela
*, boolean
));
1181 #define bfd_elf32_link_record_dynamic_symbol \
1182 _bfd_elf_link_record_dynamic_symbol
1183 #define bfd_elf64_link_record_dynamic_symbol \
1184 _bfd_elf_link_record_dynamic_symbol
1186 boolean _bfd_elf32_link_record_local_dynamic_symbol
1187 PARAMS ((struct bfd_link_info
*, bfd
*, long));
1188 boolean _bfd_elf64_link_record_local_dynamic_symbol
1189 PARAMS ((struct bfd_link_info
*, bfd
*, long));
1191 extern boolean _bfd_elf_close_and_cleanup
PARAMS ((bfd
*));
1192 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
1193 PARAMS ((bfd
*, arelent
*, struct symbol_cache_entry
*, PTR
,
1194 asection
*, bfd
*, char **));
1196 boolean _bfd_elf32_gc_sections
1197 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1198 boolean _bfd_elf32_gc_common_finalize_got_offsets
1199 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1200 boolean _bfd_elf32_gc_common_final_link
1201 PARAMS ((bfd
*, struct bfd_link_info
*));
1202 boolean _bfd_elf32_gc_record_vtinherit
1203 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1204 boolean _bfd_elf32_gc_record_vtentry
1205 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1207 boolean _bfd_elf64_gc_sections
1208 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1209 boolean _bfd_elf64_gc_common_finalize_got_offsets
1210 PARAMS ((bfd
*abfd
, struct bfd_link_info
*info
));
1211 boolean _bfd_elf64_gc_common_final_link
1212 PARAMS ((bfd
*, struct bfd_link_info
*));
1213 boolean _bfd_elf64_gc_record_vtinherit
1214 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1215 boolean _bfd_elf64_gc_record_vtentry
1216 PARAMS ((bfd
*, asection
*, struct elf_link_hash_entry
*, bfd_vma
));
1218 /* MIPS ELF specific routines. */
1220 extern boolean _bfd_mips_elf_object_p
PARAMS ((bfd
*));
1221 extern boolean _bfd_mips_elf_section_from_shdr
1222 PARAMS ((bfd
*, Elf_Internal_Shdr
*, char *));
1223 extern boolean _bfd_mips_elf_fake_sections
1224 PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*));
1225 extern boolean _bfd_mips_elf_section_from_bfd_section
1226 PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*, int *));
1227 extern boolean _bfd_mips_elf_section_processing
1228 PARAMS ((bfd
*, Elf_Internal_Shdr
*));
1229 extern void _bfd_mips_elf_symbol_processing
PARAMS ((bfd
*, asymbol
*));
1230 extern boolean _bfd_mips_elf_read_ecoff_info
1231 PARAMS ((bfd
*, asection
*, struct ecoff_debug_info
*));
1232 extern void _bfd_mips_elf_final_write_processing
PARAMS ((bfd
*, boolean
));
1233 extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc
1234 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1235 extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc
1236 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1237 extern bfd_reloc_status_type _bfd_mips_elf_gprel16_reloc
1238 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1239 extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc
1240 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1241 extern bfd_reloc_status_type _bfd_mips_elf_gprel32_reloc
1242 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
1243 extern boolean _bfd_mips_elf_set_private_flags
PARAMS ((bfd
*, flagword
));
1244 extern boolean _bfd_mips_elf_copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
1245 extern boolean _bfd_mips_elf_merge_private_bfd_data
PARAMS ((bfd
*, bfd
*));
1246 extern boolean _bfd_mips_elf_find_nearest_line
1247 PARAMS ((bfd
*, asection
*, asymbol
**, bfd_vma
, const char **,
1248 const char **, unsigned int *));
1249 extern boolean _bfd_mips_elf_set_section_contents
1250 PARAMS ((bfd
*, asection
*, PTR
, file_ptr
, bfd_size_type
));
1251 extern boolean _bfd_mips_elf_create_dynamic_sections
1252 PARAMS ((bfd
*, struct bfd_link_info
*));
1253 extern boolean _bfd_mips_elf_add_symbol_hook
1254 PARAMS ((bfd
*, struct bfd_link_info
*, const Elf_Internal_Sym
*,
1255 const char **, flagword
*, asection
**, bfd_vma
*));
1256 extern boolean _bfd_mips_elf_adjust_dynamic_symbol
1257 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
1258 extern boolean _bfd_mips_elf_finish_dynamic_symbol
1259 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
1260 Elf_Internal_Sym
*));
1261 extern boolean _bfd_mips_elf_finish_dynamic_sections
1262 PARAMS ((bfd
*, struct bfd_link_info
*));
1263 extern asection
* _bfd_mips_elf_gc_mark_hook
1264 PARAMS ((bfd
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
1265 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
1266 extern boolean _bfd_mips_elf_gc_sweep_hook
1267 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
1268 const Elf_Internal_Rela
*));
1269 extern boolean _bfd_mips_elf_always_size_sections
1270 PARAMS ((bfd
*, struct bfd_link_info
*));
1271 extern boolean _bfd_mips_elf_size_dynamic_sections
1272 PARAMS ((bfd
*, struct bfd_link_info
*));
1273 extern boolean _bfd_mips_elf_check_relocs
1274 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
1275 const Elf_Internal_Rela
*));
1276 extern struct bfd_link_hash_table
*_bfd_mips_elf_link_hash_table_create
1278 extern boolean _bfd_mips_elf_print_private_bfd_data
1279 PARAMS ((bfd
*, PTR
));
1280 extern boolean _bfd_mips_elf_link_output_symbol_hook
1281 PARAMS ((bfd
*, struct bfd_link_info
*, const char *, Elf_Internal_Sym
*,
1283 extern boolean _bfd_mips_elf_final_link
1284 PARAMS ((bfd
*, struct bfd_link_info
*));
1285 extern int _bfd_mips_elf_additional_program_headers
PARAMS ((bfd
*));
1286 extern boolean _bfd_mips_elf_modify_segment_map
PARAMS ((bfd
*));
1287 extern boolean _bfd_mips_elf_relocate_section
1288 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
1289 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
1291 #endif /* _LIBELF_H_ */