OpenCores
URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [trunk/] [insight/] [bfd/] [elf-bfd.h] - Blame information for rev 1776

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 578 markom
/* 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.
5
 
6
This file is part of BFD, the Binary File Descriptor library.
7
 
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.
12
 
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.
17
 
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.  */
21
 
22
#ifndef _LIBELF_H_
23
#define _LIBELF_H_ 1
24
 
25
#include "elf/common.h"
26
#include "elf/internal.h"
27
#include "elf/external.h"
28
#include "bfdlink.h"
29
 
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)
34
 
35
/* If size isn't specified as 64 or 32, NAME macro should fail.  */
36
#ifndef NAME
37
#if ARCH_SIZE==64
38
#define NAME(x,y) CAT4(x,64,_,y)
39
#endif
40
#if ARCH_SIZE==32
41
#define NAME(x,y) CAT4(x,32,_,y)
42
#endif
43
#endif
44
 
45
#ifndef NAME
46
#define NAME(x,y) CAT4(x,NOSIZE,_,y)
47
#endif
48
 
49
#define ElfNAME(X)      NAME(Elf,X)
50
#define elfNAME(X)      NAME(elf,X)
51
 
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.  */
56
 
57
typedef struct
58
{
59
  /* The BFD symbol.  */
60
  asymbol symbol;
61
  /* ELF symbol information.  */
62
  Elf_Internal_Sym internal_elf_sym;
63
  /* Backend specific information.  */
64
  union
65
    {
66
      unsigned int hppa_arg_reloc;
67
      PTR mips_extr;
68
      PTR any;
69
    }
70
  tc_data;
71
 
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;
76
 
77
} elf_symbol_type;
78
 
79
/* ELF linker hash table entries.  */
80
 
81
struct elf_link_hash_entry
82
{
83
  struct bfd_link_hash_entry root;
84
 
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.  */
87
  long indx;
88
 
89
  /* Symbol size.  */
90
  bfd_size_type size;
91
 
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.
100
 
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.  */
104
  long dynindx;
105
 
106
  /* String table index in .dynstr if this is a dynamic symbol.  */
107
  unsigned long dynstr_index;
108
 
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;
113
 
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.  */
121
  union
122
    {
123
      bfd_signed_vma refcount;
124
      bfd_vma offset;
125
    } got;
126
 
127
  /* Same, but tracks a procedure linkage table entry.  */
128
  union
129
    {
130
      bfd_signed_vma refcount;
131
      bfd_vma offset;
132
    } plt;
133
 
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;
138
 
139
  /* Version information.  */
140
  union
141
  {
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;
150
  } verinfo;
151
 
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;
158
 
159
  /* Virtual table derivation info.  */
160
  struct elf_link_hash_entry *vtable_parent;
161
 
162
  /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.).  */
163
  char type;
164
 
165
  /* Symbol st_other value, symbol visibility.  */
166
  unsigned char other;
167
 
168
  /* Hash value of the name computed using the ELF hash function.  */
169
  unsigned long elf_hash_value;
170
 
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
200
};
201
 
202
/* Records local symbols to be emitted in the dynamic symbol table.  */
203
 
204
struct elf_link_local_dynamic_entry
205
{
206
  struct elf_link_local_dynamic_entry *next;
207
 
208
  /* The input bfd this symbol came from.  */
209
  bfd *input_bfd;
210
 
211
  /* The index of the local symbol being copied.  */
212
  long input_indx;
213
 
214
  /* The index in the outgoing dynamic symbol table.  */
215
  long dynindx;
216
 
217
  /* A copy of the input symbol.  */
218
  Elf_Internal_Sym isym;
219
};
220
 
221
/* ELF linker hash table.  */
222
 
223
struct elf_link_hash_table
224
{
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
231
     be created.  */
232
  bfd *dynobj;
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
237
     section.  */
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.  */
248
  PTR stab_info;
249
  /* A pointer to information used to merge SEC_MERGE sections.  */
250
  PTR merge_info;
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;
256
};
257
 
258
/* Look up an entry in an ELF linker hash table.  */
259
 
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),            \
263
                         (copy), (follow)))
264
 
265
/* Traverse an ELF linker hash table.  */
266
 
267
#define elf_link_hash_traverse(table, func, info)                       \
268
  (bfd_link_hash_traverse                                               \
269
   (&(table)->root,                                                     \
270
    (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
271
    (info)))
272
 
273
/* Get the ELF linker hash table from a link_info structure.  */
274
 
275
#define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
276
 
277
/* Constant information held for an ELF backend.  */
278
 
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;
282
 
283
  /* The size of entries in the .hash section.  */
284
  unsigned char sizeof_hash_entry;
285
 
286
  /* The number of internal relocations to allocate per external
287
     relocation entry.  */
288
  unsigned char int_rels_per_ext_rel;
289
 
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));
301
 
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
305
     once.  */
306
  void (*swap_reloc_in)
307
    PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rel *));
308
 
309
  /* This function, if defined, is called to swap out a REL
310
     relocation.  */
311
  void (*swap_reloc_out)
312
    PARAMS ((bfd *, const Elf_Internal_Rel *, bfd_byte *));
313
 
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
317
     once.  */
318
  void (*swap_reloca_in)
319
    PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *));
320
 
321
  /* This function, if defined, is called to swap out a RELA
322
     relocation.  */
323
  void (*swap_reloca_out)
324
    PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *));
325
 
326
};
327
 
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) \
332
         : 0)
333
 
334
struct elf_backend_data
335
{
336
  /* The architecture for this backend.  */
337
  enum bfd_architecture arch;
338
 
339
  /* The ELF machine code (EM_xxxx) for this backend.  */
340
  int elf_machine_code;
341
 
342
  /* The maximum page size for this backend.  */
343
  bfd_vma maxpagesize;
344
 
345
  /* A function to translate an ELF RELA relocation to a BFD arelent
346
     structure.  */
347
  void (*elf_info_to_howto) PARAMS ((bfd *, arelent *,
348
                                     Elf_Internal_Rela *));
349
 
350
  /* A function to translate an ELF REL relocation to a BFD arelent
351
     structure.  */
352
  void (*elf_info_to_howto_rel) PARAMS ((bfd *, arelent *,
353
                                         Elf_Internal_Rel *));
354
 
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 *));
361
 
362
  /* The remaining functions are hooks which are called only if they
363
     are not NULL.  */
364
 
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 *));
372
 
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 *));
377
 
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 *,
381
                                                          elf_symbol_type *,
382
                                                          unsigned int));
383
 
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));
387
 
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
391
     unusual sections.  */
392
  boolean (*elf_backend_section_processing) PARAMS ((bfd *,
393
                                                     Elf32_Internal_Shdr *));
394
 
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 *,
399
                                                    char *));
400
 
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 *));
405
 
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 *,
410
                                                    int));
411
 
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 *,
416
                                                asection *));
417
 
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));
424
 
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));
437
 
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 *));
443
 
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));
454
 
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
464
     zero.  */
465
  boolean (*check_relocs)
466
    PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
467
             const Elf_Internal_Rela *relocs));
468
 
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));
483
 
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));
490
 
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));
503
 
504
  /* The RELOCATE_SECTION function is called by the ELF backend linker
505
     to handle the relocations for a section.
506
 
507
     The relocs are always passed as Rela structures; if the section
508
     actually uses Rel structures, the r_addend field will always be
509
     zero.
510
 
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
514
     necessary.
515
 
516
     This function does not have to worry about setting the reloc
517
     address or the reloc symbol index.
518
 
519
     LOCAL_SYMS is a pointer to the swapped in local symbols.
520
 
521
     LOCAL_SECTIONS is an array giving the section in the input file
522
     corresponding to the st_shndx field of each local symbol.
523
 
524
     The global hash table entry for the global symbols can be found
525
     via elf_sym_hashes (input_bfd).
526
 
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
531
     accordingly.  */
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));
537
 
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));
548
 
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));
555
 
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 *));
560
 
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));
566
 
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 *));
571
 
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 *));
575
 
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 *));
582
 
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
585
     be maintaining.  */
586
  boolean (*gc_sweep_hook)
587
    PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
588
             const Elf_Internal_Rela *relocs));
589
 
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
592
     to be changed.  */
593
  void (*elf_backend_post_process_headers)
594
    PARAMS ((bfd *, struct bfd_link_info *));
595
 
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 *));
601
 
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 *))));
610
 
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 *));
615
 
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 *));
620
 
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 *));
625
 
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 *));
630
 
631
  /* This function, if defined, is called when an NT_PRSTATUS note is found
632
     in a core file. */
633
  boolean (*elf_backend_grok_prstatus) PARAMS ((bfd *, Elf_Internal_Note *));
634
 
635
  /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
636
     note is found in a core file. */
637
  boolean (*elf_backend_grok_psinfo) PARAMS ((bfd *, Elf_Internal_Note *));
638
 
639
  /* The swapping table to use when dealing with ECOFF information.
640
     Used for the MIPS ELF .mdebug section.  */
641
  const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
642
 
643
  /* Alternate EM_xxxx machine codes for this backend.  */
644
  int elf_machine_alt1;
645
  int elf_machine_alt2;
646
 
647
  const struct elf_size_info *s;
648
 
649
  /* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the
650
     .got section */
651
  bfd_vma got_symbol_offset;
652
 
653
  /* The size in bytes of the headers for the GOT and PLT.  This includes
654
     the so-called reserved entries on some systems.  */
655
  bfd_vma got_header_size;
656
  bfd_vma plt_header_size;
657
 
658
  /* This is true if the linker should act like collect and gather
659
     global constructors and destructors by name.  This is true for
660
     MIPS ELF because the Irix 5 tools can not handle the .init
661
     section.  */
662
  unsigned collect : 1;
663
 
664
  /* This is true if the linker should ignore changes to the type of a
665
     symbol.  This is true for MIPS ELF because some Irix 5 objects
666
     record undefined functions as STT_OBJECT although the definitions
667
     are STT_FUNC.  */
668
  unsigned type_change_ok : 1;
669
 
670
  /* Whether the backend may use REL relocations.  (Some backends use
671
     both REL and RELA relocations, and this flag is set for those
672
     backends.)  */
673
  unsigned may_use_rel_p : 1;
674
 
675
  /* Whether the backend may use RELA relocations.  (Some backends use
676
     both REL and RELA relocations, and this flag is set for those
677
     backends.)  */
678
  unsigned may_use_rela_p : 1;
679
 
680
  /* Whether the default relocation type is RELA.  If a backend with
681
     this flag set wants REL relocations for a particular section,
682
     it must note that explicitly.  Similarly, if this flag is clear,
683
     and the backend wants RELA relocations for a particular
684
     section.  */
685
  unsigned default_use_rela_p : 1;
686
 
687
  /* True if addresses "naturally" sign extend.  This is used when
688
     swapping in from Elf32 when BFD64.  */
689
  unsigned sign_extend_vma : 1;
690
 
691
  unsigned want_got_plt : 1;
692
  unsigned plt_readonly : 1;
693
  unsigned want_plt_sym : 1;
694
  unsigned plt_not_loaded : 1;
695
  unsigned plt_alignment : 4;
696
  unsigned can_gc_sections : 1;
697
  unsigned want_dynbss : 1;
698
};
699
 
700
/* Information stored for each BFD section in an ELF file.  This
701
   structure is allocated by elf_new_section_hook.  */
702
 
703
struct bfd_elf_section_data
704
{
705
  /* The ELF header for this section.  */
706
  Elf_Internal_Shdr this_hdr;
707
  /* The ELF header for the reloc section associated with this
708
     section, if any.  */
709
  Elf_Internal_Shdr rel_hdr;
710
  /* If there is a second reloc section associated with this section,
711
     as can happen on Irix 6, this field points to the header.  */
712
  Elf_Internal_Shdr *rel_hdr2;
713
  /* The number of relocations currently assigned to REL_HDR.  */
714
  unsigned int rel_count;
715
  /* The number of relocations currently assigned to REL_HDR2.  */
716
  unsigned int rel_count2;
717
  /* The ELF section number of this section.  Only used for an output
718
     file.  */
719
  int this_idx;
720
  /* The ELF section number of the reloc section indicated by
721
     REL_HDR if any.  Only used for an output file.  */
722
  int rel_idx;
723
  /* The ELF section number of the reloc section indicated by
724
     REL_HDR2 if any.  Only used for an output file.  */
725
  int rel_idx2;
726
  /* Used by the backend linker to store the symbol hash table entries
727
     associated with relocs against global symbols.  */
728
  struct elf_link_hash_entry **rel_hashes;
729
  /* A pointer to the swapped relocs.  If the section uses REL relocs,
730
     rather than RELA, all the r_addend fields will be zero.  This
731
     pointer may be NULL.  It is used by the backend linker.  */
732
  Elf_Internal_Rela *relocs;
733
  /* Used by the backend linker when generating a shared library to
734
     record the dynamic symbol index for a section symbol
735
     corresponding to this section.  A value of 0 means that there is
736
     no dynamic symbol for this section.  */
737
  long dynindx;
738
  /* A pointer used for .stab linking optimizations.  */
739
  PTR stab_info;
740
  /* A pointer used for SEC_MERGE optimizations.  */
741
  PTR merge_info;
742
  /* A pointer available for the processor specific ELF backend.  */
743
  PTR tdata;
744
  /* Nonzero if this section uses RELA relocations, rather than REL.  */
745
  unsigned int use_rela_p:1;
746
};
747
 
748
#define elf_section_data(sec)  ((struct bfd_elf_section_data*)sec->used_by_bfd)
749
 
750
#define get_elf_backend_data(abfd) \
751
  ((struct elf_backend_data *) (abfd)->xvec->backend_data)
752
 
753
/* Enumeration to specify the special section.  */
754
typedef enum elf_linker_section_enum
755
{
756
  LINKER_SECTION_UNKNOWN,               /* not used */
757
  LINKER_SECTION_GOT,                   /* .got section for global offset pointers */
758
  LINKER_SECTION_PLT,                   /* .plt section for generated procedure stubs */
759
  LINKER_SECTION_SDATA,                 /* .sdata/.sbss section for PowerPC */
760
  LINKER_SECTION_SDATA2,                /* .sdata2/.sbss2 section for PowerPC */
761
  LINKER_SECTION_MAX                    /* # of linker sections */
762
} elf_linker_section_enum_t;
763
 
764
/* Sections created by the linker.  */
765
 
766
typedef struct elf_linker_section
767
{
768
  char *name;                           /* name of the section */
769
  char *rel_name;                       /* name of the associated .rel{,a}. section */
770
  char *bss_name;                       /* name of a related .bss section */
771
  char *sym_name;                       /* name of symbol to reference this section */
772
  asection *section;                    /* pointer to the section */
773
  asection *bss_section;                /* pointer to the bss section associated with this */
774
  asection *rel_section;                /* pointer to the relocations needed for this section */
775
  struct elf_link_hash_entry *sym_hash; /* pointer to the created symbol hash value */
776
  bfd_vma initial_size;                 /* initial size before any linker generated allocations */
777
  bfd_vma sym_offset;                   /* offset of symbol from beginning of section */
778
  bfd_vma hole_size;                    /* size of reserved address hole in allocation */
779
  bfd_vma hole_offset;                  /* current offset for the hole */
780
  bfd_vma max_hole_offset;              /* maximum offset for the hole */
781
  elf_linker_section_enum_t which;      /* which section this is */
782
  boolean hole_written_p;               /* whether the hole has been initialized */
783
  unsigned int alignment;               /* alignment for the section */
784
  flagword flags;                       /* flags to use to create the section */
785
} elf_linker_section_t;
786
 
787
/* Linked list of allocated pointer entries.  This hangs off of the symbol lists, and
788
   provides allows us to return different pointers, based on different addend's.  */
789
 
790
typedef struct elf_linker_section_pointers
791
{
792
  struct elf_linker_section_pointers *next;     /* next allocated pointer for this symbol */
793
  bfd_vma offset;                               /* offset of pointer from beginning of section */
794
  bfd_signed_vma addend;                        /* addend used */
795
  elf_linker_section_enum_t which;              /* which linker section this is */
796
  boolean written_address_p;                    /* whether address was written yet */
797
} elf_linker_section_pointers_t;
798
 
799
/* Some private data is stashed away for future use using the tdata pointer
800
   in the bfd structure.  */
801
 
802
struct elf_obj_tdata
803
{
804
  Elf_Internal_Ehdr elf_header[1];      /* Actual data, but ref like ptr */
805
  Elf_Internal_Shdr **elf_sect_ptr;
806
  Elf_Internal_Phdr *phdr;
807
  struct elf_segment_map *segment_map;
808
  struct bfd_strtab_hash *strtab_ptr;
809
  int num_locals;
810
  int num_globals;
811
  asymbol **section_syms;               /* STT_SECTION symbols for each section */
812
  Elf_Internal_Shdr symtab_hdr;
813
  Elf_Internal_Shdr shstrtab_hdr;
814
  Elf_Internal_Shdr strtab_hdr;
815
  Elf_Internal_Shdr dynsymtab_hdr;
816
  Elf_Internal_Shdr dynstrtab_hdr;
817
  Elf_Internal_Shdr dynversym_hdr;
818
  Elf_Internal_Shdr dynverref_hdr;
819
  Elf_Internal_Shdr dynverdef_hdr;
820
  unsigned int symtab_section, shstrtab_section;
821
  unsigned int strtab_section, dynsymtab_section;
822
  unsigned int dynversym_section, dynverdef_section, dynverref_section;
823
  file_ptr next_file_pos;
824
#if 0
825
  /* we don't need these inside bfd anymore, and I think
826
     these weren't used outside bfd.  */
827
  void *prstatus;                       /* The raw /proc prstatus structure */
828
  void *prpsinfo;                       /* The raw /proc prpsinfo structure */
829
#endif
830
  bfd_vma gp;                           /* The gp value (MIPS only, for now) */
831
  unsigned int gp_size;                 /* The gp size (MIPS only, for now) */
832
 
833
  /* Information grabbed from an elf core file.  */
834
  int core_signal;
835
  int core_pid;
836
  int core_lwpid;
837
  char* core_program;
838
  char* core_command;
839
 
840
  /* This is set to true if the object was created by the backend
841
     linker.  */
842
  boolean linker;
843
 
844
  /* A mapping from external symbols to entries in the linker hash
845
     table, used when linking.  This is indexed by the symbol index
846
     minus the sh_info field of the symbol table header.  */
847
  struct elf_link_hash_entry **sym_hashes;
848
 
849
  /* A mapping from local symbols to offsets into the global offset
850
     table, used when linking.  This is indexed by the symbol index.
851
     Like for the globals, we use a union and two names primarily to
852
     document the intent of any particular piece of code.  The field
853
     should be used as a count until size_dynamic_sections, at which
854
     point the contents of the .got is fixed.  Afterward, if an entry
855
     is -1, then the symbol does not require a global offset table entry.  */
856
  union
857
    {
858
      bfd_signed_vma *refcounts;
859
      bfd_vma *offsets;
860
    } local_got;
861
 
862
  /* A mapping from local symbols to offsets into the various linker
863
     sections added.  This is index by the symbol index.  */
864
  elf_linker_section_pointers_t **linker_section_pointers;
865
 
866
  /* The linker ELF emulation code needs to let the backend ELF linker
867
     know what filename should be used for a dynamic object if the
868
     dynamic object is found using a search.  The emulation code then
869
     sometimes needs to know what name was actually used.  Until the
870
     file has been added to the linker symbol table, this field holds
871
     the name the linker wants.  After it has been added, it holds the
872
     name actually used, which will be the DT_SONAME entry if there is
873
     one.  */
874
  const char *dt_name;
875
 
876
  /* When a reference in a regular object is resolved by a shared
877
     object is loaded into via the DT_NEEDED entries by the linker
878
     ELF emulation code, we need to add the shared object to the
879
     DT_NEEDED list of the resulting binary to indicate the dependency
880
     as if the -l option is passed to the linker. This field holds the
881
     name of the loaded shared object.  */
882
  const char *dt_soname;
883
 
884
  /* Irix 5 often screws up the symbol table, sorting local symbols
885
     after global symbols.  This flag is set if the symbol table in
886
     this BFD appears to be screwed up.  If it is, we ignore the
887
     sh_info field in the symbol table header, and always read all the
888
     symbols.  */
889
  boolean bad_symtab;
890
 
891
  /* Records the result of `get_program_header_size'.  */
892
  bfd_size_type program_header_size;
893
 
894
  /* Used by find_nearest_line entry point.  */
895
  PTR line_info;
896
 
897
  /* Used by MIPS ELF find_nearest_line entry point.  The structure
898
     could be included directly in this one, but there's no point to
899
     wasting the memory just for the infrequently called
900
     find_nearest_line.  */
901
  struct mips_elf_find_line *find_line_info;
902
 
903
  /* A place to stash dwarf1 info for this bfd.  */
904
  struct dwarf1_debug *dwarf1_find_line_info;
905
 
906
  /* A place to stash dwarf2 info for this bfd.  */
907
  PTR dwarf2_find_line_info;
908
 
909
  /* An array of stub sections indexed by symbol number, used by the
910
     MIPS ELF linker.  FIXME: We should figure out some way to only
911
     include this field for a MIPS ELF target.  */
912
  asection **local_stubs;
913
 
914
  /* Used to determine if the e_flags field has been initialized */
915
  boolean flags_init;
916
 
917
  /* Number of symbol version definitions we are about to emit.  */
918
  unsigned int cverdefs;
919
 
920
  /* Number of symbol version references we are about to emit.  */
921
  unsigned int cverrefs;
922
 
923
  /* Symbol version definitions in external objects.  */
924
  Elf_Internal_Verdef *verdef;
925
 
926
  /* Symbol version references to external objects.  */
927
  Elf_Internal_Verneed *verref;
928
 
929
  /* Linker sections that we are interested in.  */
930
  struct elf_linker_section *linker_section[ (int)LINKER_SECTION_MAX ];
931
 
932
  /* The Irix 5 support uses two virtual sections, which represent
933
     text/data symbols defined in dynamic objects.  */
934
  asymbol *elf_data_symbol;
935
  asymbol *elf_text_symbol;
936
  asection *elf_data_section;
937
  asection *elf_text_section;
938
};
939
 
940
#define elf_tdata(bfd)          ((bfd) -> tdata.elf_obj_data)
941
#define elf_elfheader(bfd)      (elf_tdata(bfd) -> elf_header)
942
#define elf_elfsections(bfd)    (elf_tdata(bfd) -> elf_sect_ptr)
943
#define elf_shstrtab(bfd)       (elf_tdata(bfd) -> strtab_ptr)
944
#define elf_onesymtab(bfd)      (elf_tdata(bfd) -> symtab_section)
945
#define elf_dynsymtab(bfd)      (elf_tdata(bfd) -> dynsymtab_section)
946
#define elf_dynversym(bfd)      (elf_tdata(bfd) -> dynversym_section)
947
#define elf_dynverdef(bfd)      (elf_tdata(bfd) -> dynverdef_section)
948
#define elf_dynverref(bfd)      (elf_tdata(bfd) -> dynverref_section)
949
#define elf_num_locals(bfd)     (elf_tdata(bfd) -> num_locals)
950
#define elf_num_globals(bfd)    (elf_tdata(bfd) -> num_globals)
951
#define elf_section_syms(bfd)   (elf_tdata(bfd) -> section_syms)
952
#define core_prpsinfo(bfd)      (elf_tdata(bfd) -> prpsinfo)
953
#define core_prstatus(bfd)      (elf_tdata(bfd) -> prstatus)
954
#define elf_gp(bfd)             (elf_tdata(bfd) -> gp)
955
#define elf_gp_size(bfd)        (elf_tdata(bfd) -> gp_size)
956
#define elf_sym_hashes(bfd)     (elf_tdata(bfd) -> sym_hashes)
957
#define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
958
#define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
959
#define elf_local_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers)
960
#define elf_dt_name(bfd)        (elf_tdata(bfd) -> dt_name)
961
#define elf_dt_soname(bfd)      (elf_tdata(bfd) -> dt_soname)
962
#define elf_bad_symtab(bfd)     (elf_tdata(bfd) -> bad_symtab)
963
#define elf_flags_init(bfd)     (elf_tdata(bfd) -> flags_init)
964
#define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n])
965
 
966
extern void _bfd_elf_swap_verdef_in
967
  PARAMS ((bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *));
968
extern void _bfd_elf_swap_verdef_out
969
  PARAMS ((bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *));
970
extern void _bfd_elf_swap_verdaux_in
971
  PARAMS ((bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *));
972
extern void _bfd_elf_swap_verdaux_out
973
  PARAMS ((bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *));
974
extern void _bfd_elf_swap_verneed_in
975
  PARAMS ((bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *));
976
extern void _bfd_elf_swap_verneed_out
977
  PARAMS ((bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *));
978
extern void _bfd_elf_swap_vernaux_in
979
  PARAMS ((bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *));
980
extern void _bfd_elf_swap_vernaux_out
981
  PARAMS ((bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *));
982
extern void _bfd_elf_swap_versym_in
983
  PARAMS ((bfd *, const Elf_External_Versym *, Elf_Internal_Versym *));
984
extern void _bfd_elf_swap_versym_out
985
  PARAMS ((bfd *, const Elf_Internal_Versym *, Elf_External_Versym *));
986
 
987
extern int _bfd_elf_section_from_bfd_section PARAMS ((bfd *, asection *));
988
extern char *bfd_elf_string_from_elf_section
989
  PARAMS ((bfd *, unsigned, unsigned));
990
extern char *bfd_elf_get_str_section PARAMS ((bfd *, unsigned));
991
 
992
extern boolean _bfd_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
993
extern void bfd_elf_print_symbol PARAMS ((bfd *, PTR, asymbol *,
994
                                          bfd_print_symbol_type));
995
#define elf_string_from_elf_strtab(abfd,strindex) \
996
     bfd_elf_string_from_elf_section(abfd,elf_elfheader(abfd)->e_shstrndx,strindex)
997
 
998
#define bfd_elf32_print_symbol  bfd_elf_print_symbol
999
#define bfd_elf64_print_symbol  bfd_elf_print_symbol
1000
 
1001
extern unsigned long bfd_elf_hash PARAMS ((const char *));
1002
 
1003
extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *,
1004
                                                            arelent *,
1005
                                                            asymbol *,
1006
                                                            PTR,
1007
                                                            asection *,
1008
                                                            bfd *,
1009
                                                            char **));
1010
extern boolean bfd_elf_mkobject PARAMS ((bfd *));
1011
extern boolean bfd_elf_mkcorefile PARAMS ((bfd *));
1012
extern Elf_Internal_Shdr *bfd_elf_find_section PARAMS ((bfd *, char *));
1013
extern boolean _bfd_elf_make_section_from_shdr
1014
  PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, const char *name));
1015
extern boolean _bfd_elf_make_section_from_phdr
1016
  PARAMS ((bfd *abfd, Elf_Internal_Phdr *hdr, int index, const char *typename));
1017
extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
1018
  PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
1019
extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
1020
  PARAMS ((bfd *));
1021
extern void _bfd_elf_link_hash_copy_indirect
1022
  PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
1023
extern void _bfd_elf_link_hash_hide_symbol
1024
  PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
1025
extern boolean _bfd_elf_link_hash_table_init
1026
  PARAMS ((struct elf_link_hash_table *, bfd *,
1027
           struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
1028
                                       struct bfd_hash_table *,
1029
                                       const char *)));
1030
extern boolean _bfd_elf_slurp_version_tables PARAMS ((bfd *));
1031
 
1032
extern boolean _bfd_elf_merge_sections
1033
  PARAMS ((bfd *, struct bfd_link_info *));
1034
 
1035
extern boolean _bfd_elf_copy_private_symbol_data
1036
  PARAMS ((bfd *, asymbol *, bfd *, asymbol *));
1037
extern boolean _bfd_elf_copy_private_section_data
1038
  PARAMS ((bfd *, asection *, bfd *, asection *));
1039
extern boolean _bfd_elf_write_object_contents PARAMS ((bfd *));
1040
extern boolean _bfd_elf_write_corefile_contents PARAMS ((bfd *));
1041
extern boolean _bfd_elf_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
1042
                                                       file_ptr,
1043
                                                       bfd_size_type));
1044
extern long _bfd_elf_get_symtab_upper_bound PARAMS ((bfd *));
1045
extern long _bfd_elf_get_symtab PARAMS ((bfd *, asymbol **));
1046
extern long _bfd_elf_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
1047
extern long _bfd_elf_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
1048
extern long _bfd_elf_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
1049
extern long _bfd_elf_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
1050
                                                  arelent **, asymbol **));
1051
extern long _bfd_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
1052
extern long _bfd_elf_canonicalize_dynamic_reloc PARAMS ((bfd *, arelent **,
1053
                                                         asymbol **));
1054
extern asymbol *_bfd_elf_make_empty_symbol PARAMS ((bfd *));
1055
extern void _bfd_elf_get_symbol_info PARAMS ((bfd *, asymbol *,
1056
                                               symbol_info *));
1057
extern boolean _bfd_elf_is_local_label_name PARAMS ((bfd *, const char *));
1058
extern alent *_bfd_elf_get_lineno PARAMS ((bfd *, asymbol *));
1059
extern boolean _bfd_elf_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
1060
                                                unsigned long));
1061
extern boolean _bfd_elf_find_nearest_line PARAMS ((bfd *, asection *,
1062
                                                    asymbol **,
1063
                                                    bfd_vma, const char **,
1064
                                                    const char **,
1065
                                                    unsigned int *));
1066
#define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
1067
#define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
1068
extern int _bfd_elf_sizeof_headers PARAMS ((bfd *, boolean));
1069
extern boolean _bfd_elf_new_section_hook PARAMS ((bfd *, asection *));
1070
extern boolean _bfd_elf_init_reloc_shdr
1071
  PARAMS ((bfd *, Elf_Internal_Shdr *, asection *, boolean));
1072
 
1073
/* If the target doesn't have reloc handling written yet:  */
1074
extern void _bfd_elf_no_info_to_howto PARAMS ((bfd *, arelent *,
1075
                                               Elf_Internal_Rela *));
1076
 
1077
extern boolean bfd_section_from_shdr PARAMS ((bfd *, unsigned int shindex));
1078
extern boolean bfd_section_from_phdr PARAMS ((bfd *, Elf_Internal_Phdr *, int));
1079
 
1080
extern int _bfd_elf_symbol_from_bfd_symbol PARAMS ((bfd *, asymbol **));
1081
 
1082
asection *bfd_section_from_elf_index PARAMS ((bfd *, unsigned int));
1083
boolean _bfd_elf_create_dynamic_sections PARAMS ((bfd *,
1084
                                                  struct bfd_link_info *));
1085
struct bfd_strtab_hash *_bfd_elf_stringtab_init PARAMS ((void));
1086
boolean
1087
_bfd_elf_link_record_dynamic_symbol PARAMS ((struct bfd_link_info *,
1088
                                             struct elf_link_hash_entry *));
1089
long
1090
_bfd_elf_link_lookup_local_dynindx PARAMS ((struct bfd_link_info *,
1091
                                            bfd *, long));
1092
boolean
1093
_bfd_elf_compute_section_file_positions PARAMS ((bfd *,
1094
                                                 struct bfd_link_info *));
1095
void _bfd_elf_assign_file_positions_for_relocs PARAMS ((bfd *));
1096
file_ptr _bfd_elf_assign_file_position_for_section PARAMS ((Elf_Internal_Shdr *,
1097
                                                            file_ptr,
1098
                                                            boolean));
1099
 
1100
extern boolean _bfd_elf_validate_reloc PARAMS ((bfd *, arelent *));
1101
 
1102
boolean _bfd_elf_create_dynamic_sections PARAMS ((bfd *,
1103
                                                  struct bfd_link_info *));
1104
boolean _bfd_elf_create_got_section PARAMS ((bfd *,
1105
                                             struct bfd_link_info *));
1106
unsigned long _bfd_elf_link_renumber_dynsyms PARAMS ((bfd *,
1107
                                                      struct bfd_link_info *));
1108
 
1109
boolean _bfd_elfcore_make_pseudosection PARAMS ((bfd *, char *, int, int));
1110
char *_bfd_elfcore_strndup PARAMS ((bfd *, char *, int));
1111
 
1112
elf_linker_section_t *_bfd_elf_create_linker_section
1113
  PARAMS ((bfd *abfd,
1114
           struct bfd_link_info *info,
1115
           enum elf_linker_section_enum,
1116
           elf_linker_section_t *defaults));
1117
 
1118
elf_linker_section_pointers_t *_bfd_elf_find_pointer_linker_section
1119
  PARAMS ((elf_linker_section_pointers_t *linker_pointers,
1120
           bfd_signed_vma addend,
1121
           elf_linker_section_enum_t which));
1122
 
1123
boolean bfd_elf32_create_pointer_linker_section
1124
  PARAMS ((bfd *abfd,
1125
           struct bfd_link_info *info,
1126
           elf_linker_section_t *lsect,
1127
           struct elf_link_hash_entry *h,
1128
           const Elf32_Internal_Rela *rel));
1129
 
1130
bfd_vma bfd_elf32_finish_pointer_linker_section
1131
  PARAMS ((bfd *output_abfd,
1132
           bfd *input_bfd,
1133
           struct bfd_link_info *info,
1134
           elf_linker_section_t *lsect,
1135
           struct elf_link_hash_entry *h,
1136
           bfd_vma relocation,
1137
           const Elf32_Internal_Rela *rel,
1138
           int relative_reloc));
1139
 
1140
boolean bfd_elf64_create_pointer_linker_section
1141
  PARAMS ((bfd *abfd,
1142
           struct bfd_link_info *info,
1143
           elf_linker_section_t *lsect,
1144
           struct elf_link_hash_entry *h,
1145
           const Elf64_Internal_Rela *rel));
1146
 
1147
bfd_vma bfd_elf64_finish_pointer_linker_section
1148
  PARAMS ((bfd *output_abfd,
1149
           bfd *input_bfd,
1150
           struct bfd_link_info *info,
1151
           elf_linker_section_t *lsect,
1152
           struct elf_link_hash_entry *h,
1153
           bfd_vma relocation,
1154
           const Elf64_Internal_Rela *rel,
1155
           int relative_reloc));
1156
 
1157
boolean _bfd_elf_make_linker_section_rela
1158
  PARAMS ((bfd *dynobj,
1159
           elf_linker_section_t *lsect,
1160
           int alignment));
1161
 
1162
extern const bfd_target *bfd_elf32_object_p PARAMS ((bfd *));
1163
extern const bfd_target *bfd_elf32_core_file_p PARAMS ((bfd *));
1164
extern char *bfd_elf32_core_file_failing_command PARAMS ((bfd *));
1165
extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *));
1166
extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *,
1167
                                                                 bfd *));
1168
 
1169
extern boolean bfd_elf32_bfd_link_add_symbols
1170
  PARAMS ((bfd *, struct bfd_link_info *));
1171
extern boolean bfd_elf32_bfd_final_link
1172
  PARAMS ((bfd *, struct bfd_link_info *));
1173
 
1174
extern void bfd_elf32_swap_symbol_in
1175
  PARAMS ((bfd *, const Elf32_External_Sym *, Elf_Internal_Sym *));
1176
extern void bfd_elf32_swap_symbol_out
1177
  PARAMS ((bfd *, const Elf_Internal_Sym *, PTR));
1178
extern void bfd_elf32_swap_reloc_in
1179
  PARAMS ((bfd *, const Elf32_External_Rel *, Elf_Internal_Rel *));
1180
extern void bfd_elf32_swap_reloc_out
1181
  PARAMS ((bfd *, const Elf_Internal_Rel *, Elf32_External_Rel *));
1182
extern void bfd_elf32_swap_reloca_in
1183
  PARAMS ((bfd *, const Elf32_External_Rela *, Elf_Internal_Rela *));
1184
extern void bfd_elf32_swap_reloca_out
1185
  PARAMS ((bfd *, const Elf_Internal_Rela *, Elf32_External_Rela *));
1186
extern void bfd_elf32_swap_phdr_in
1187
  PARAMS ((bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *));
1188
extern void bfd_elf32_swap_phdr_out
1189
  PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *));
1190
extern void bfd_elf32_swap_dyn_in
1191
  PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
1192
extern void bfd_elf32_swap_dyn_out
1193
  PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR));
1194
extern long bfd_elf32_slurp_symbol_table
1195
  PARAMS ((bfd *, asymbol **, boolean));
1196
extern boolean bfd_elf32_write_shdrs_and_ehdr PARAMS ((bfd *));
1197
extern int bfd_elf32_write_out_phdrs
1198
  PARAMS ((bfd *, const Elf_Internal_Phdr *, int));
1199
extern void bfd_elf32_write_relocs
1200
  PARAMS ((bfd *, asection *, PTR));
1201
extern boolean bfd_elf32_slurp_reloc_table
1202
  PARAMS ((bfd *, asection *, asymbol **, boolean));
1203
extern boolean bfd_elf32_add_dynamic_entry
1204
  PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
1205
extern boolean bfd_elf32_link_create_dynamic_sections
1206
  PARAMS ((bfd *, struct bfd_link_info *));
1207
extern Elf_Internal_Rela *_bfd_elf32_link_read_relocs
1208
  PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean));
1209
 
1210
extern const bfd_target *bfd_elf64_object_p PARAMS ((bfd *));
1211
extern const bfd_target *bfd_elf64_core_file_p PARAMS ((bfd *));
1212
extern char *bfd_elf64_core_file_failing_command PARAMS ((bfd *));
1213
extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *));
1214
extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *,
1215
                                                                 bfd *));
1216
extern boolean bfd_elf64_bfd_link_add_symbols
1217
  PARAMS ((bfd *, struct bfd_link_info *));
1218
extern boolean bfd_elf64_bfd_final_link
1219
  PARAMS ((bfd *, struct bfd_link_info *));
1220
 
1221
extern void bfd_elf64_swap_symbol_in
1222
  PARAMS ((bfd *, const Elf64_External_Sym *, Elf_Internal_Sym *));
1223
extern void bfd_elf64_swap_symbol_out
1224
  PARAMS ((bfd *, const Elf_Internal_Sym *, PTR));
1225
extern void bfd_elf64_swap_reloc_in
1226
  PARAMS ((bfd *, const Elf64_External_Rel *, Elf_Internal_Rel *));
1227
extern void bfd_elf64_swap_reloc_out
1228
  PARAMS ((bfd *, const Elf_Internal_Rel *, Elf64_External_Rel *));
1229
extern void bfd_elf64_swap_reloca_in
1230
  PARAMS ((bfd *, const Elf64_External_Rela *, Elf_Internal_Rela *));
1231
extern void bfd_elf64_swap_reloca_out
1232
  PARAMS ((bfd *, const Elf_Internal_Rela *, Elf64_External_Rela *));
1233
extern void bfd_elf64_swap_phdr_in
1234
  PARAMS ((bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *));
1235
extern void bfd_elf64_swap_phdr_out
1236
  PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *));
1237
extern void bfd_elf64_swap_dyn_in
1238
  PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
1239
extern void bfd_elf64_swap_dyn_out
1240
  PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR));
1241
extern long bfd_elf64_slurp_symbol_table
1242
  PARAMS ((bfd *, asymbol **, boolean));
1243
extern boolean bfd_elf64_write_shdrs_and_ehdr PARAMS ((bfd *));
1244
extern int bfd_elf64_write_out_phdrs
1245
  PARAMS ((bfd *, const Elf_Internal_Phdr *, int));
1246
extern void bfd_elf64_write_relocs
1247
  PARAMS ((bfd *, asection *, PTR));
1248
extern boolean bfd_elf64_slurp_reloc_table
1249
  PARAMS ((bfd *, asection *, asymbol **, boolean));
1250
extern boolean bfd_elf64_add_dynamic_entry
1251
  PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
1252
extern boolean bfd_elf64_link_create_dynamic_sections
1253
  PARAMS ((bfd *, struct bfd_link_info *));
1254
extern Elf_Internal_Rela *_bfd_elf64_link_read_relocs
1255
  PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean));
1256
 
1257
#define bfd_elf32_link_record_dynamic_symbol \
1258
  _bfd_elf_link_record_dynamic_symbol
1259
#define bfd_elf64_link_record_dynamic_symbol \
1260
  _bfd_elf_link_record_dynamic_symbol
1261
 
1262
boolean _bfd_elf32_link_record_local_dynamic_symbol
1263
  PARAMS ((struct bfd_link_info *, bfd *, long));
1264
boolean _bfd_elf64_link_record_local_dynamic_symbol
1265
  PARAMS ((struct bfd_link_info *, bfd *, long));
1266
 
1267
extern boolean _bfd_elf_close_and_cleanup PARAMS ((bfd *));
1268
extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
1269
  PARAMS ((bfd *, arelent *, struct symbol_cache_entry *, PTR,
1270
           asection *, bfd *, char **));
1271
 
1272
boolean _bfd_elf32_gc_sections
1273
  PARAMS ((bfd *abfd, struct bfd_link_info *info));
1274
boolean _bfd_elf32_gc_common_finalize_got_offsets
1275
  PARAMS ((bfd *abfd, struct bfd_link_info *info));
1276
boolean _bfd_elf32_gc_common_final_link
1277
  PARAMS ((bfd *, struct bfd_link_info *));
1278
boolean _bfd_elf32_gc_record_vtinherit
1279
  PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
1280
boolean _bfd_elf32_gc_record_vtentry
1281
  PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
1282
 
1283
boolean _bfd_elf64_gc_sections
1284
  PARAMS ((bfd *abfd, struct bfd_link_info *info));
1285
boolean _bfd_elf64_gc_common_finalize_got_offsets
1286
  PARAMS ((bfd *abfd, struct bfd_link_info *info));
1287
boolean _bfd_elf64_gc_common_final_link
1288
  PARAMS ((bfd *, struct bfd_link_info *));
1289
boolean _bfd_elf64_gc_record_vtinherit
1290
  PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
1291
boolean _bfd_elf64_gc_record_vtentry
1292
  PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
1293
 
1294
/* MIPS ELF specific routines.  */
1295
 
1296
extern boolean _bfd_mips_elf_object_p PARAMS ((bfd *));
1297
extern boolean _bfd_mips_elf_section_from_shdr
1298
  PARAMS ((bfd *, Elf_Internal_Shdr *, char *));
1299
extern boolean _bfd_mips_elf_fake_sections
1300
  PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
1301
extern boolean _bfd_mips_elf_section_from_bfd_section
1302
  PARAMS ((bfd *, Elf_Internal_Shdr *, asection *, int *));
1303
extern boolean _bfd_mips_elf_section_processing
1304
  PARAMS ((bfd *, Elf_Internal_Shdr *));
1305
extern void _bfd_mips_elf_symbol_processing PARAMS ((bfd *, asymbol *));
1306
extern boolean _bfd_mips_elf_read_ecoff_info
1307
  PARAMS ((bfd *, asection *, struct ecoff_debug_info *));
1308
extern void _bfd_mips_elf_final_write_processing PARAMS ((bfd *, boolean));
1309
extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc
1310
  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1311
extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc
1312
  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1313
extern bfd_reloc_status_type _bfd_mips_elf_gprel16_reloc
1314
  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1315
extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc
1316
  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1317
extern bfd_reloc_status_type _bfd_mips_elf_gprel32_reloc
1318
  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1319
extern boolean _bfd_mips_elf_set_private_flags PARAMS ((bfd *, flagword));
1320
extern boolean _bfd_mips_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
1321
extern boolean _bfd_mips_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
1322
extern boolean _bfd_mips_elf_find_nearest_line
1323
  PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
1324
           const char **, unsigned int *));
1325
extern boolean _bfd_mips_elf_set_section_contents
1326
  PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
1327
extern boolean _bfd_mips_elf_create_dynamic_sections
1328
  PARAMS ((bfd *, struct bfd_link_info *));
1329
extern boolean _bfd_mips_elf_add_symbol_hook
1330
  PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
1331
           const char **, flagword *, asection **, bfd_vma *));
1332
extern boolean _bfd_mips_elf_adjust_dynamic_symbol
1333
  PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
1334
extern boolean _bfd_mips_elf_finish_dynamic_symbol
1335
  PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
1336
           Elf_Internal_Sym *));
1337
extern boolean _bfd_mips_elf_finish_dynamic_sections
1338
  PARAMS ((bfd *, struct bfd_link_info *));
1339
extern asection * _bfd_mips_elf_gc_mark_hook
1340
  PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
1341
           struct elf_link_hash_entry *, Elf_Internal_Sym *));
1342
extern boolean _bfd_mips_elf_gc_sweep_hook
1343
  PARAMS ((bfd *, struct bfd_link_info *, asection *,
1344
           const Elf_Internal_Rela *));
1345
extern boolean _bfd_mips_elf_always_size_sections
1346
  PARAMS ((bfd *, struct bfd_link_info *));
1347
extern boolean _bfd_mips_elf_size_dynamic_sections
1348
  PARAMS ((bfd *, struct bfd_link_info *));
1349
extern boolean _bfd_mips_elf_check_relocs
1350
  PARAMS ((bfd *, struct bfd_link_info *, asection *,
1351
           const Elf_Internal_Rela *));
1352
extern struct bfd_link_hash_table *_bfd_mips_elf_link_hash_table_create
1353
  PARAMS ((bfd *));
1354
extern boolean _bfd_mips_elf_print_private_bfd_data
1355
  PARAMS ((bfd *, PTR));
1356
extern boolean _bfd_mips_elf_link_output_symbol_hook
1357
  PARAMS ((bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *,
1358
           asection *));
1359
extern boolean _bfd_mips_elf_final_link
1360
  PARAMS ((bfd *, struct bfd_link_info *));
1361
extern int _bfd_mips_elf_additional_program_headers PARAMS ((bfd *));
1362
extern boolean _bfd_mips_elf_modify_segment_map PARAMS ((bfd *));
1363
extern boolean _bfd_mips_elf_relocate_section
1364
  PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1365
           Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
1366
 
1367
/* SH ELF specific routine.  */
1368
 
1369
extern boolean _sh_elf_set_mach_from_flags PARAMS ((bfd *));
1370
 
1371
#endif /* _LIBELF_H_ */

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.