1 /* BFD back-end data structures for ELF files.
2 Copyright (C) 1992, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 #include "elf/common.h"
25 #include "elf/internal.h"
26 #include "elf/external.h"
29 /* If size isn't specified as 64 or 32, NAME macro should fail. */
32 #define NAME(x,y) CAT4(x,64,_,y)
35 #define NAME(x,y) CAT4(x,32,_,y)
40 #define NAME(x,y) CAT4(x,NOSIZE,_,y)
43 #define ElfNAME(X) NAME(Elf,X)
44 #define elfNAME(X) NAME(elf,X)
46 /* Information held for an ELF symbol. The first field is the
47 corresponding asymbol. Every symbol is an ELF file is actually a
48 pointer to this structure, although it is often handled as a
49 pointer to an asymbol. */
55 /* ELF symbol information. */
56 Elf_Internal_Sym internal_elf_sym;
57 /* Backend specific information. */
60 unsigned int hppa_arg_reloc;
67 /* ELF linker hash table entries. */
69 struct elf_link_hash_entry
71 struct bfd_link_hash_entry root;
73 /* Symbol index in output file. This is initialized to -1. It is
74 set to -2 if the symbol is used by a reloc. */
80 /* Symbol index as a dynamic symbol. Initialized to -1, and remains
81 -1 if this is not a dynamic symbol. */
84 /* String table index in .dynstr if this is a dynamic symbol. */
85 unsigned long dynstr_index;
87 /* If this is a weak defined symbol from a dynamic object, this
88 field points to a defined symbol with the same value, if there is
89 one. Otherwise it is NULL. */
90 struct elf_link_hash_entry *weakdef;
92 /* If this symbol requires an entry in the global offset table, the
93 processor specific backend uses this field to hold the offset
94 into the .got section. If this field is -1, then the symbol does
95 not require a global offset table entry. */
98 /* If this symbol requires an entry in the procedure linkage table,
99 the processor specific backend uses these two fields to hold the
100 offset into the procedure linkage section and the offset into the
101 .got section. If plt_offset is -1, then the symbol does not
102 require an entry in the procedure linkage table. */
105 /* If this symbol is used in the linker created sections, the processor
106 specific backend uses this field to map the field into the offset
107 from the beginning of the section. */
108 struct elf_linker_section_pointers *linker_section_pointer;
110 /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
113 /* Some flags; legal values follow. */
114 unsigned char elf_link_hash_flags;
115 /* Symbol is referenced by a non-shared object. */
116 #define ELF_LINK_HASH_REF_REGULAR 01
117 /* Symbol is defined by a non-shared object. */
118 #define ELF_LINK_HASH_DEF_REGULAR 02
119 /* Symbol is referenced by a shared object. */
120 #define ELF_LINK_HASH_REF_DYNAMIC 04
121 /* Symbol is defined by a shared object. */
122 #define ELF_LINK_HASH_DEF_DYNAMIC 010
123 /* Dynamic symbol has been adjustd. */
124 #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 020
125 /* Symbol needs a copy reloc. */
126 #define ELF_LINK_HASH_NEEDS_COPY 040
127 /* Symbol needs a procedure linkage table entry. */
128 #define ELF_LINK_HASH_NEEDS_PLT 0100
129 /* Symbol appears in a non-ELF input file. */
130 #define ELF_LINK_NON_ELF 0200
131 /* Note: If you add more flags, you must change the type of
132 elf_link_hash_flags. */
135 /* ELF linker hash table. */
137 struct elf_link_hash_table
139 struct bfd_link_hash_table root;
140 /* Whether we have created the special dynamic sections required
141 when linking against or generating a shared object. */
142 boolean dynamic_sections_created;
143 /* The BFD used to hold special sections created by the linker.
144 This will be the first BFD found which requires these sections to
147 /* The number of symbols found in the link which must be put into
148 the .dynsym section. */
149 bfd_size_type dynsymcount;
150 /* The string table of dynamic symbols, which becomes the .dynstr
152 struct bfd_strtab_hash *dynstr;
153 /* The number of buckets in the hash table in the .hash section.
154 This is based on the number of dynamic symbols. */
155 bfd_size_type bucketcount;
156 /* A linked list of DT_NEEDED names found in dynamic objects
157 included in the link. */
158 struct bfd_link_needed_list *needed;
161 /* Look up an entry in an ELF linker hash table. */
163 #define elf_link_hash_lookup(table, string, create, copy, follow) \
164 ((struct elf_link_hash_entry *) \
165 bfd_link_hash_lookup (&(table)->root, (string), (create), \
168 /* Traverse an ELF linker hash table. */
170 #define elf_link_hash_traverse(table, func, info) \
171 (bfd_link_hash_traverse \
173 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
176 /* Get the ELF linker hash table from a link_info structure. */
178 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
180 /* Constant information held for an ELF backend. */
182 struct elf_size_info {
183 unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr;
184 unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note;
186 unsigned char arch_size, file_align;
187 unsigned char elfclass, ev_current;
188 int (*write_out_phdrs) PARAMS ((bfd *, Elf_Internal_Phdr *, int));
189 boolean (*write_shdrs_and_ehdr) PARAMS ((bfd *));
190 void (*write_relocs) PARAMS ((bfd *, asection *, PTR));
191 void (*swap_symbol_out) PARAMS ((bfd *, Elf_Internal_Sym *, PTR));
192 boolean (*slurp_reloc_table) PARAMS ((bfd *, asection *, asymbol **));
193 long (*slurp_symbol_table) PARAMS ((bfd *, asymbol **, boolean));
194 void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
197 #define elf_symbol_from(ABFD,S) \
198 (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
199 && (S)->the_bfd->tdata.elf_obj_data != 0) \
200 ? (elf_symbol_type *) (S) \
203 struct elf_backend_data
205 /* Whether the backend uses REL or RELA relocations. FIXME: some
206 ELF backends use both. When we need to support one, this whole
207 approach will need to be changed. */
210 /* The architecture for this backend. */
211 enum bfd_architecture arch;
213 /* The ELF machine code (EM_xxxx) for this backend. */
214 int elf_machine_code;
216 /* The maximum page size for this backend. */
219 /* This is true if the linker should act like collect and gather
220 global constructors and destructors by name. This is true for
221 MIPS ELF because the Irix 5 tools can not handle the .init
225 /* This is true if the linker should ignore changes to the type of a
226 symbol. This is true for MIPS ELF because some Irix 5 objects
227 record undefined functions as STT_OBJECT although the definitions
229 boolean type_change_ok;
231 /* A function to translate an ELF RELA relocation to a BFD arelent
233 void (*elf_info_to_howto) PARAMS ((bfd *, arelent *,
234 Elf_Internal_Rela *));
236 /* A function to translate an ELF REL relocation to a BFD arelent
238 void (*elf_info_to_howto_rel) PARAMS ((bfd *, arelent *,
239 Elf_Internal_Rel *));
241 /* A function to determine whether a symbol is global when
242 partitioning the symbol table into local and global symbols.
243 This should be NULL for most targets, in which case the correct
244 thing will be done. MIPS ELF, at least on the Irix 5, has
245 special requirements. */
246 boolean (*elf_backend_sym_is_global) PARAMS ((bfd *, asymbol *));
248 /* The remaining functions are hooks which are called only if they
251 /* A function to permit a backend specific check on whether a
252 particular BFD format is relevant for an object file, and to
253 permit the backend to set any global information it wishes. When
254 this is called elf_elfheader is set, but anything else should be
255 used with caution. If this returns false, the check_format
256 routine will return a bfd_error_wrong_format error. */
257 boolean (*elf_backend_object_p) PARAMS ((bfd *));
259 /* A function to do additional symbol processing when reading the
260 ELF symbol table. This is where any processor-specific special
261 section indices are handled. */
262 void (*elf_backend_symbol_processing) PARAMS ((bfd *, asymbol *));
264 /* A function to do additional symbol processing after reading the
265 entire ELF symbol table. */
266 boolean (*elf_backend_symbol_table_processing) PARAMS ((bfd *,
270 /* A function to do additional processing on the ELF section header
271 just before writing it out. This is used to set the flags and
272 type fields for some sections, or to actually write out data for
274 boolean (*elf_backend_section_processing) PARAMS ((bfd *,
275 Elf32_Internal_Shdr *));
277 /* A function to handle unusual section types when creating BFD
278 sections from ELF sections. */
279 boolean (*elf_backend_section_from_shdr) PARAMS ((bfd *,
280 Elf32_Internal_Shdr *,
283 /* A function to set up the ELF section header for a BFD section in
284 preparation for writing it out. This is where the flags and type
285 fields are set for unusual sections. */
286 boolean (*elf_backend_fake_sections) PARAMS ((bfd *, Elf32_Internal_Shdr *,
289 /* A function to get the ELF section index for a BFD section. If
290 this returns true, the section was found. If it is a normal ELF
291 section, *RETVAL should be left unchanged. If it is not a normal
292 ELF section *RETVAL should be set to the SHN_xxxx index. */
293 boolean (*elf_backend_section_from_bfd_section)
294 PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *retval));
296 /* If this field is not NULL, it is called by the add_symbols phase
297 of a link just before adding a symbol to the global linker hash
298 table. It may modify any of the fields as it wishes. If *NAME
299 is set to NULL, the symbol will be skipped rather than being
300 added to the hash table. This function is responsible for
301 handling all processor dependent symbol bindings and section
302 indices, and must set at least *FLAGS and *SEC for each processor
303 dependent case; failure to do so will cause a link error. */
304 boolean (*elf_add_symbol_hook)
305 PARAMS ((bfd *abfd, struct bfd_link_info *info,
306 const Elf_Internal_Sym *, const char **name,
307 flagword *flags, asection **sec, bfd_vma *value));
309 /* If this field is not NULL, it is called by the elf_link_output_sym
310 phase of a link for each symbol which will appear in the object file. */
311 boolean (*elf_backend_link_output_symbol_hook)
312 PARAMS ((bfd *, struct bfd_link_info *info, const char *,
313 Elf_Internal_Sym *, asection *));
315 /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
316 linker the first time it encounters a dynamic object in the link.
317 This function must create any sections required for dynamic
318 linking. The ABFD argument is a dynamic object. The .interp,
319 .dynamic, .dynsym, .dynstr, and .hash functions have already been
320 created, and this function may modify the section flags if
321 desired. This function will normally create the .got and .plt
322 sections, but different backends have different requirements. */
323 boolean (*elf_backend_create_dynamic_sections)
324 PARAMS ((bfd *abfd, struct bfd_link_info *info));
326 /* The CHECK_RELOCS function is called by the add_symbols phase of
327 the ELF backend linker. It is called once for each section with
328 relocs of an object file, just after the symbols for the object
329 file have been added to the global linker hash table. The
330 function must look through the relocs and do any special handling
331 required. This generally means allocating space in the global
332 offset table, and perhaps allocating space for a reloc. The
333 relocs are always passed as Rela structures; if the section
334 actually uses Rel structures, the r_addend field will always be
336 boolean (*check_relocs)
337 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
338 const Elf_Internal_Rela *relocs));
340 /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
341 linker for every symbol which is defined by a dynamic object and
342 referenced by a regular object. This is called after all the
343 input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
344 function has been called. The hash table entry should be
345 bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
346 defined in a section from a dynamic object. Dynamic object
347 sections are not included in the final link, and this function is
348 responsible for changing the value to something which the rest of
349 the link can deal with. This will normally involve adding an
350 entry to the .plt or .got or some such section, and setting the
351 symbol to point to that. */
352 boolean (*elf_backend_adjust_dynamic_symbol)
353 PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
355 /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
356 linker after all the linker input files have been seen but before
357 the sections sizes have been set. This is called after
358 ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
359 It is only called when linking against a dynamic object. It must
360 set the sizes of the dynamic sections, and may fill in their
361 contents as well. The generic ELF linker can handle the .dynsym,
362 .dynstr and .hash sections. This function must handle the
363 .interp section and any sections created by the
364 CREATE_DYNAMIC_SECTIONS entry point. */
365 boolean (*elf_backend_size_dynamic_sections)
366 PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
368 /* The RELOCATE_SECTION function is called by the ELF backend linker
369 to handle the relocations for a section.
371 The relocs are always passed as Rela structures; if the section
372 actually uses Rel structures, the r_addend field will always be
375 This function is responsible for adjust the section contents as
376 necessary, and (if using Rela relocs and generating a
377 relocateable output file) adjusting the reloc addend as
380 This function does not have to worry about setting the reloc
381 address or the reloc symbol index.
383 LOCAL_SYMS is a pointer to the swapped in local symbols.
385 LOCAL_SECTIONS is an array giving the section in the input file
386 corresponding to the st_shndx field of each local symbol.
388 The global hash table entry for the global symbols can be found
389 via elf_sym_hashes (input_bfd).
391 When generating relocateable output, this function must handle
392 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
393 going to be the section symbol corresponding to the output
394 section, which means that the addend must be adjusted
396 boolean (*elf_backend_relocate_section)
397 PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
398 bfd *input_bfd, asection *input_section, bfd_byte *contents,
399 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
400 asection **local_sections));
402 /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
403 linker just before it writes a symbol out to the .dynsym section.
404 The processor backend may make any required adjustment to the
405 symbol. It may also take the opportunity to set contents of the
406 dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
407 all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
408 on those symbols which are defined by a dynamic object. */
409 boolean (*elf_backend_finish_dynamic_symbol)
410 PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
411 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
413 /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
414 linker just before it writes all the dynamic sections out to the
415 output file. The FINISH_DYNAMIC_SYMBOL will have been called on
416 all dynamic symbols. */
417 boolean (*elf_backend_finish_dynamic_sections)
418 PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
420 /* A function to do any beginning processing needed for the ELF file
421 before building the ELF headers and computing file positions. */
422 void (*elf_backend_begin_write_processing)
423 PARAMS ((bfd *, struct bfd_link_info *));
425 /* A function to do any final processing needed for the ELF file
426 before writing it out. The LINKER argument is true if this BFD
427 was created by the ELF backend linker. */
428 void (*elf_backend_final_write_processing)
429 PARAMS ((bfd *, boolean linker));
431 /* This function is called by get_program_header_size. It should
432 return the number of additional program segments which this BFD
433 will need. It should return -1 on error. */
434 int (*elf_backend_additional_program_headers) PARAMS ((bfd *));
436 /* This function is called to modify an existing segment map in a
437 backend specific fashion. */
438 boolean (*elf_backend_modify_segment_map) PARAMS ((bfd *));
440 /* The swapping table to use when dealing with ECOFF information.
441 Used for the MIPS ELF .mdebug section. */
442 const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
444 /* Alternate EM_xxxx machine codes for this backend. */
445 int elf_machine_alt1;
446 int elf_machine_alt2;
448 const struct elf_size_info *s;
450 unsigned want_got_plt : 1;
451 unsigned plt_readonly : 1;
452 unsigned want_plt_sym : 1;
455 /* Information stored for each BFD section in an ELF file. This
456 structure is allocated by elf_new_section_hook. */
458 struct bfd_elf_section_data
460 /* The ELF header for this section. */
461 Elf_Internal_Shdr this_hdr;
462 /* The ELF header for the reloc section associated with this
464 Elf_Internal_Shdr rel_hdr;
465 /* The ELF section number of this section. Only used for an output
468 /* The ELF section number of the reloc section associated with this
469 section, if any. Only used for an output file. */
471 /* Used by the backend linker to store the symbol hash table entries
472 associated with relocs against global symbols. */
473 struct elf_link_hash_entry **rel_hashes;
474 /* A pointer to the swapped relocs. If the section uses REL relocs,
475 rather than RELA, all the r_addend fields will be zero. This
476 pointer may be NULL. It is used by the backend linker. */
477 Elf_Internal_Rela *relocs;
478 /* Used by the backend linker when generating a shared library to
479 record the dynamic symbol index for a section symbol
480 corresponding to this section. */
482 /* A pointer available for the processor specific ELF backend. */
486 #define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd)
488 #define get_elf_backend_data(abfd) \
489 ((struct elf_backend_data *) (abfd)->xvec->backend_data)
491 /* Enumeration to specify the special section. */
492 typedef enum elf_linker_section_enum
494 LINKER_SECTION_UNKNOWN, /* not used */
495 LINKER_SECTION_GOT, /* .got section for global offset pointers */
496 LINKER_SECTION_PLT, /* .plt section for generated procedure stubs */
497 LINKER_SECTION_SDATA, /* .sdata/.sbss section for PowerPC */
498 LINKER_SECTION_SDATA2, /* .sdata2/.sbss2 section for PowerPC */
499 LINKER_SECTION_MAX /* # of linker sections */
500 } elf_linker_section_enum_t;
502 /* Sections created by the linker. */
504 typedef struct elf_linker_section
506 char *name; /* name of the section */
507 char *rel_name; /* name of the associated .rel{,a}. section */
508 char *bss_name; /* name of a related .bss section */
509 char *sym_name; /* name of symbol to reference this section */
510 asection *section; /* pointer to the section */
511 asection *bss_section; /* pointer to the bss section associated with this */
512 asection *rel_section; /* pointer to the relocations needed for this section */
513 struct elf_link_hash_entry *sym_hash; /* pointer to the created symbol hash value */
514 bfd_vma initial_size; /* initial size before any linker generated allocations */
515 bfd_vma sym_offset; /* offset of symbol from beginning of section */
516 bfd_vma hole_size; /* size of reserved address hole in allocation */
517 bfd_vma hole_offset; /* current offset for the hole */
518 bfd_vma max_hole_offset; /* maximum offset for the hole */
519 elf_linker_section_enum_t which; /* which section this is */
520 boolean hole_written_p; /* whether the hole has been initialized */
521 int alignment; /* alignment for the section */
522 flagword flags; /* flags to use to create the section */
523 } elf_linker_section_t;
525 /* Linked list of allocated pointer entries. This hangs off of the symbol lists, and
526 provides allows us to return different pointers, based on different addend's. */
528 typedef struct elf_linker_section_pointers
530 struct elf_linker_section_pointers *next; /* next allocated pointer for this symbol */
531 bfd_vma offset; /* offset of pointer from beginning of section */
532 bfd_signed_vma addend; /* addend used */
533 elf_linker_section_enum_t which; /* which linker section this is */
534 boolean written_address_p; /* whether address was written yet */
535 } elf_linker_section_pointers_t;
537 /* Some private data is stashed away for future use using the tdata pointer
538 in the bfd structure. */
542 Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */
543 Elf_Internal_Shdr **elf_sect_ptr;
544 Elf_Internal_Phdr *phdr;
545 struct elf_segment_map *segment_map;
546 struct bfd_strtab_hash *strtab_ptr;
549 asymbol **section_syms; /* STT_SECTION symbols for each section */
550 Elf_Internal_Shdr symtab_hdr;
551 Elf_Internal_Shdr shstrtab_hdr;
552 Elf_Internal_Shdr strtab_hdr;
553 Elf_Internal_Shdr dynsymtab_hdr;
554 Elf_Internal_Shdr dynstrtab_hdr;
555 unsigned int symtab_section, shstrtab_section;
556 unsigned int strtab_section, dynsymtab_section;
557 file_ptr next_file_pos;
558 void *prstatus; /* The raw /proc prstatus structure */
559 void *prpsinfo; /* The raw /proc prpsinfo structure */
560 bfd_vma gp; /* The gp value (MIPS only, for now) */
561 unsigned int gp_size; /* The gp size (MIPS only, for now) */
563 /* This is set to true if the object was created by the backend
567 /* A mapping from external symbols to entries in the linker hash
568 table, used when linking. This is indexed by the symbol index
569 minus the sh_info field of the symbol table header. */
570 struct elf_link_hash_entry **sym_hashes;
572 /* A mapping from local symbols to offsets into the global offset
573 table, used when linking. This is indexed by the symbol index. */
574 bfd_vma *local_got_offsets;
576 /* A mapping from local symbols to offsets into the various linker
577 sections added. This is index by the symbol index. */
578 elf_linker_section_pointers_t **linker_section_pointers;
580 /* The linker ELF emulation code needs to let the backend ELF linker
581 know what filename should be used for a dynamic object if the
582 dynamic object is found using a search. The emulation code then
583 sometimes needs to know what name was actually used. Until the
584 file has been added to the linker symbol table, this field holds
585 the name the linker wants. After it has been added, it holds the
586 name actually used, which will be the DT_SONAME entry if there is
590 /* Irix 5 often screws up the symbol table, sorting local symbols
591 after global symbols. This flag is set if the symbol table in
592 this BFD appears to be screwed up. If it is, we ignore the
593 sh_info field in the symbol table header, and always read all the
597 /* Records the result of `get_program_header_size'. */
598 bfd_size_type program_header_size;
600 /* Used by find_nearest_line entry point. */
603 /* Used by MIPS ELF find_nearest_line entry point. The structure
604 could be included directly in this one, but there's no point to
605 wasting the memory just for the infrequently called
606 find_nearest_line. */
607 struct mips_elf_find_line *find_line_info;
609 /* Used to determine if the e_flags field has been initialized */
612 /* Linker sections that we are interested in. */
613 struct elf_linker_section *linker_section[ (int)LINKER_SECTION_MAX ];
616 #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
617 #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
618 #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
619 #define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr)
620 #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
621 #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
622 #define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals)
623 #define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals)
624 #define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms)
625 #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
626 #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
627 #define elf_gp(bfd) (elf_tdata(bfd) -> gp)
628 #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
629 #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
630 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got_offsets)
631 #define elf_local_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers)
632 #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
633 #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
634 #define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init)
635 #define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n])
637 extern int _bfd_elf_section_from_bfd_section PARAMS ((bfd *, asection *));
638 extern char *bfd_elf_string_from_elf_section
639 PARAMS ((bfd *, unsigned, unsigned));
640 extern char *bfd_elf_get_str_section PARAMS ((bfd *, unsigned));
642 extern boolean _bfd_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
643 extern void bfd_elf_print_symbol PARAMS ((bfd *, PTR, asymbol *,
644 bfd_print_symbol_type));
645 #define elf_string_from_elf_strtab(abfd,strindex) \
646 bfd_elf_string_from_elf_section(abfd,elf_elfheader(abfd)->e_shstrndx,strindex)
648 #define bfd_elf32_print_symbol bfd_elf_print_symbol
649 #define bfd_elf64_print_symbol bfd_elf_print_symbol
650 #define bfd_elf32_mkobject bfd_elf_mkobject
651 #define bfd_elf64_mkobject bfd_elf_mkobject
652 #define elf_mkobject bfd_elf_mkobject
654 extern unsigned long bfd_elf_hash PARAMS ((CONST unsigned char *));
656 extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *,
663 extern boolean bfd_elf_mkobject PARAMS ((bfd *));
664 extern Elf_Internal_Shdr *bfd_elf_find_section PARAMS ((bfd *, char *));
665 extern boolean _bfd_elf_make_section_from_shdr
666 PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, const char *name));
667 extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
668 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
669 extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
671 extern boolean _bfd_elf_link_hash_table_init
672 PARAMS ((struct elf_link_hash_table *, bfd *,
673 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
674 struct bfd_hash_table *,
677 extern boolean _bfd_elf_copy_private_symbol_data
678 PARAMS ((bfd *, asymbol *, bfd *, asymbol *));
679 extern boolean _bfd_elf_copy_private_section_data
680 PARAMS ((bfd *, asection *, bfd *, asection *));
681 extern boolean _bfd_elf_write_object_contents PARAMS ((bfd *));
682 extern boolean _bfd_elf_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
685 extern long _bfd_elf_get_symtab_upper_bound PARAMS ((bfd *));
686 extern long _bfd_elf_get_symtab PARAMS ((bfd *, asymbol **));
687 extern long _bfd_elf_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
688 extern long _bfd_elf_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
689 extern long _bfd_elf_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
690 extern long _bfd_elf_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
691 arelent **, asymbol **));
692 extern asymbol *_bfd_elf_make_empty_symbol PARAMS ((bfd *));
693 extern void _bfd_elf_get_symbol_info PARAMS ((bfd *, asymbol *,
695 extern alent *_bfd_elf_get_lineno PARAMS ((bfd *, asymbol *));
696 extern boolean _bfd_elf_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
698 extern boolean _bfd_elf_find_nearest_line PARAMS ((bfd *, asection *,
700 bfd_vma, CONST char **,
703 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
704 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
705 extern int _bfd_elf_sizeof_headers PARAMS ((bfd *, boolean));
706 extern boolean _bfd_elf_new_section_hook PARAMS ((bfd *, asection *));
708 /* If the target doesn't have reloc handling written yet: */
709 extern void _bfd_elf_no_info_to_howto PARAMS ((bfd *, arelent *,
710 Elf_Internal_Rela *));
712 asection *bfd_section_from_elf_index PARAMS ((bfd *, unsigned int));
713 boolean _bfd_elf_create_dynamic_sections PARAMS ((bfd *,
714 struct bfd_link_info *));
715 struct bfd_strtab_hash *_bfd_elf_stringtab_init PARAMS ((void));
717 _bfd_elf_link_record_dynamic_symbol PARAMS ((struct bfd_link_info *,
718 struct elf_link_hash_entry *));
720 _bfd_elf_compute_section_file_positions PARAMS ((bfd *,
721 struct bfd_link_info *));
722 void _bfd_elf_assign_file_positions_for_relocs PARAMS ((bfd *));
723 file_ptr _bfd_elf_assign_file_position_for_section PARAMS ((Elf_Internal_Shdr *,
727 boolean _bfd_elf_create_dynamic_sections PARAMS ((bfd *,
728 struct bfd_link_info *));
729 boolean _bfd_elf_create_got_section PARAMS ((bfd *,
730 struct bfd_link_info *));
732 elf_linker_section_t *_bfd_elf_create_linker_section
734 struct bfd_link_info *info,
735 enum elf_linker_section_enum,
736 elf_linker_section_t *defaults));
738 elf_linker_section_pointers_t *_bfd_elf_find_pointer_linker_section
739 PARAMS ((elf_linker_section_pointers_t *linker_pointers,
740 bfd_signed_vma addend,
741 elf_linker_section_enum_t which));
743 boolean bfd_elf32_create_pointer_linker_section
745 struct bfd_link_info *info,
746 elf_linker_section_t *lsect,
747 struct elf_link_hash_entry *h,
748 const Elf32_Internal_Rela *rel));
750 bfd_vma bfd_elf32_finish_pointer_linker_section
751 PARAMS ((bfd *output_abfd,
753 struct bfd_link_info *info,
754 elf_linker_section_t *lsect,
755 struct elf_link_hash_entry *h,
757 const Elf32_Internal_Rela *rel,
758 int relative_reloc));
760 boolean bfd_elf64_create_pointer_linker_section
762 struct bfd_link_info *info,
763 elf_linker_section_t *lsect,
764 struct elf_link_hash_entry *h,
765 const Elf64_Internal_Rela *rel));
767 bfd_vma bfd_elf64_finish_pointer_linker_section
768 PARAMS ((bfd *output_abfd,
770 struct bfd_link_info *info,
771 elf_linker_section_t *lsect,
772 struct elf_link_hash_entry *h,
774 const Elf64_Internal_Rela *rel,
775 int relative_reloc));
777 boolean _bfd_elf_make_linker_section_rela
778 PARAMS ((bfd *dynobj,
779 elf_linker_section_t *lsect,
782 extern const bfd_target *bfd_elf32_object_p PARAMS ((bfd *));
783 extern const bfd_target *bfd_elf32_core_file_p PARAMS ((bfd *));
784 extern char *bfd_elf32_core_file_failing_command PARAMS ((bfd *));
785 extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *));
786 extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *,
789 extern boolean bfd_elf32_bfd_link_add_symbols
790 PARAMS ((bfd *, struct bfd_link_info *));
791 extern boolean bfd_elf32_bfd_final_link
792 PARAMS ((bfd *, struct bfd_link_info *));
794 extern void bfd_elf32_swap_symbol_in
795 PARAMS ((bfd *, Elf32_External_Sym *, Elf_Internal_Sym *));
796 extern void bfd_elf32_swap_symbol_out
797 PARAMS ((bfd *, Elf_Internal_Sym *, PTR));
798 extern void bfd_elf32_swap_reloc_in
799 PARAMS ((bfd *, Elf32_External_Rel *, Elf_Internal_Rel *));
800 extern void bfd_elf32_swap_reloc_out
801 PARAMS ((bfd *, Elf_Internal_Rel *, Elf32_External_Rel *));
802 extern void bfd_elf32_swap_reloca_in
803 PARAMS ((bfd *, Elf32_External_Rela *, Elf_Internal_Rela *));
804 extern void bfd_elf32_swap_reloca_out
805 PARAMS ((bfd *, Elf_Internal_Rela *, Elf32_External_Rela *));
806 extern void bfd_elf32_swap_phdr_in
807 PARAMS ((bfd *, Elf32_External_Phdr *, Elf_Internal_Phdr *));
808 extern void bfd_elf32_swap_phdr_out
809 PARAMS ((bfd *, Elf_Internal_Phdr *, Elf32_External_Phdr *));
810 extern void bfd_elf32_swap_dyn_in
811 PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
812 extern void bfd_elf32_swap_dyn_out
813 PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf32_External_Dyn *));
814 extern boolean bfd_elf32_add_dynamic_entry
815 PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
816 extern boolean bfd_elf32_link_create_dynamic_sections
817 PARAMS ((bfd *, struct bfd_link_info *));
819 extern const bfd_target *bfd_elf64_object_p PARAMS ((bfd *));
820 extern const bfd_target *bfd_elf64_core_file_p PARAMS ((bfd *));
821 extern char *bfd_elf64_core_file_failing_command PARAMS ((bfd *));
822 extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *));
823 extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *,
825 extern boolean bfd_elf64_bfd_link_add_symbols
826 PARAMS ((bfd *, struct bfd_link_info *));
827 extern boolean bfd_elf64_bfd_final_link
828 PARAMS ((bfd *, struct bfd_link_info *));
830 extern void bfd_elf64_swap_symbol_in
831 PARAMS ((bfd *, Elf64_External_Sym *, Elf_Internal_Sym *));
832 extern void bfd_elf64_swap_symbol_out
833 PARAMS ((bfd *, Elf_Internal_Sym *, PTR));
834 extern void bfd_elf64_swap_reloc_in
835 PARAMS ((bfd *, Elf64_External_Rel *, Elf_Internal_Rel *));
836 extern void bfd_elf64_swap_reloc_out
837 PARAMS ((bfd *, Elf_Internal_Rel *, Elf64_External_Rel *));
838 extern void bfd_elf64_swap_reloca_in
839 PARAMS ((bfd *, Elf64_External_Rela *, Elf_Internal_Rela *));
840 extern void bfd_elf64_swap_reloca_out
841 PARAMS ((bfd *, Elf_Internal_Rela *, Elf64_External_Rela *));
842 extern void bfd_elf64_swap_phdr_in
843 PARAMS ((bfd *, Elf64_External_Phdr *, Elf_Internal_Phdr *));
844 extern void bfd_elf64_swap_phdr_out
845 PARAMS ((bfd *, Elf_Internal_Phdr *, Elf64_External_Phdr *));
846 extern void bfd_elf64_swap_dyn_in
847 PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
848 extern void bfd_elf64_swap_dyn_out
849 PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf64_External_Dyn *));
850 extern boolean bfd_elf64_add_dynamic_entry
851 PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
852 extern boolean bfd_elf64_link_create_dynamic_sections
853 PARAMS ((bfd *, struct bfd_link_info *));
855 #define bfd_elf32_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol
856 #define bfd_elf64_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol
858 #endif /* _LIBELF_H_ */