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

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.18.50/] [bfd/] [elf-bfd.h] - Blame information for rev 179

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

Line No. Rev Author Line
1 38 julius
/* BFD back-end data structures for ELF files.
2
   Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
3
   2002, 2003, 2004, 2005, 2006, 2007, 2008 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
21
   MA 02110-1301, USA.  */
22
 
23
#ifndef _LIBELF_H_
24
#define _LIBELF_H_ 1
25
 
26
#include "elf/common.h"
27
#include "elf/external.h"
28
#include "elf/internal.h"
29
#include "bfdlink.h"
30
 
31
/* The number of entries in a section is its size divided by the size
32
   of a single entry.  This is normally only applicable to reloc and
33
   symbol table sections.  */
34
#define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_size / (shdr)->sh_entsize)
35
 
36
/* If size isn't specified as 64 or 32, NAME macro should fail.  */
37
#ifndef NAME
38
#if ARCH_SIZE == 64
39
#define NAME(x, y) x ## 64 ## _ ## y
40
#endif
41
#if ARCH_SIZE == 32
42
#define NAME(x, y) x ## 32 ## _ ## y
43
#endif
44
#endif
45
 
46
#ifndef NAME
47
#define NAME(x, y) x ## NOSIZE ## _ ## y
48
#endif
49
 
50
#define ElfNAME(X)      NAME(Elf,X)
51
#define elfNAME(X)      NAME(elf,X)
52
 
53
/* Information held for an ELF symbol.  The first field is the
54
   corresponding asymbol.  Every symbol is an ELF file is actually a
55
   pointer to this structure, although it is often handled as a
56
   pointer to an asymbol.  */
57
 
58
typedef struct
59
{
60
  /* The BFD symbol.  */
61
  asymbol symbol;
62
  /* ELF symbol information.  */
63
  Elf_Internal_Sym internal_elf_sym;
64
  /* Backend specific information.  */
65
  union
66
    {
67
      unsigned int hppa_arg_reloc;
68
      void *mips_extr;
69
      void *any;
70
    }
71
  tc_data;
72
 
73
  /* Version information.  This is from an Elf_Internal_Versym
74
     structure in a SHT_GNU_versym section.  It is zero if there is no
75
     version information.  */
76
  unsigned short version;
77
 
78
} elf_symbol_type;
79
 
80
struct elf_strtab_hash;
81
struct got_entry;
82
struct plt_entry;
83
 
84
/* ELF linker hash table entries.  */
85
 
86
struct elf_link_hash_entry
87
{
88
  struct bfd_link_hash_entry root;
89
 
90
  /* Symbol index in output file.  This is initialized to -1.  It is
91
     set to -2 if the symbol is used by a reloc.  */
92
  long indx;
93
 
94
  /* Symbol index as a dynamic symbol.  Initialized to -1, and remains
95
     -1 if this is not a dynamic symbol.  */
96
  /* ??? Note that this is consistently used as a synonym for tests
97
     against whether we can perform various simplifying transformations
98
     to the code.  (E.g. changing a pc-relative jump to a PLT entry
99
     into a pc-relative jump to the target function.)  That test, which
100
     is often relatively complex, and someplaces wrong or incomplete,
101
     should really be replaced by a predicate in elflink.c.
102
 
103
     End result: this field -1 does not indicate that the symbol is
104
     not in the dynamic symbol table, but rather that the symbol is
105
     not visible outside this DSO.  */
106
  long dynindx;
107
 
108
  /* If this symbol requires an entry in the global offset table, the
109
     processor specific backend uses this field to track usage and
110
     final offset.  Two schemes are supported:  The first assumes that
111
     a symbol may only have one GOT entry, and uses REFCOUNT until
112
     size_dynamic_sections, at which point the contents of the .got is
113
     fixed.  Afterward, if OFFSET is -1, then the symbol does not
114
     require a global offset table entry.  The second scheme allows
115
     multiple GOT entries per symbol, managed via a linked list
116
     pointed to by GLIST.  */
117
  union gotplt_union
118
    {
119
      bfd_signed_vma refcount;
120
      bfd_vma offset;
121
      struct got_entry *glist;
122
      struct plt_entry *plist;
123
    } got;
124
 
125
  /* Same, but tracks a procedure linkage table entry.  */
126
  union gotplt_union plt;
127
 
128
  /* Symbol size.  */
129
  bfd_size_type size;
130
 
131
  /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.).  */
132
  unsigned int type : 8;
133
 
134
  /* Symbol st_other value, symbol visibility.  */
135
  unsigned int other : 8;
136
 
137
  /* Symbol is referenced by a non-shared object.  */
138
  unsigned int ref_regular : 1;
139
  /* Symbol is defined by a non-shared object.  */
140
  unsigned int def_regular : 1;
141
  /* Symbol is referenced by a shared object.  */
142
  unsigned int ref_dynamic : 1;
143
  /* Symbol is defined by a shared object.  */
144
  unsigned int def_dynamic : 1;
145
  /* Symbol has a non-weak reference from a non-shared object.  */
146
  unsigned int ref_regular_nonweak : 1;
147
  /* Dynamic symbol has been adjustd.  */
148
  unsigned int dynamic_adjusted : 1;
149
  /* Symbol needs a copy reloc.  */
150
  unsigned int needs_copy : 1;
151
  /* Symbol needs a procedure linkage table entry.  */
152
  unsigned int needs_plt : 1;
153
  /* Symbol appears in a non-ELF input file.  */
154
  unsigned int non_elf : 1;
155
  /* Symbol should be marked as hidden in the version information.  */
156
  unsigned int hidden : 1;
157
  /* Symbol was forced to local scope due to a version script file.  */
158
  unsigned int forced_local : 1;
159
  /* Symbol was forced to be dynamic due to a version script file.  */
160
  unsigned int dynamic : 1;
161
  /* Symbol was marked during garbage collection.  */
162
  unsigned int mark : 1;
163
  /* Symbol is referenced by a non-GOT/non-PLT relocation.  This is
164
     not currently set by all the backends.  */
165
  unsigned int non_got_ref : 1;
166
  /* Symbol has a definition in a shared object.
167
     FIXME: There is no real need for this field if def_dynamic is never
168
     cleared and all places that test def_dynamic also test def_regular.  */
169
  unsigned int dynamic_def : 1;
170
  /* Symbol is weak in all shared objects.  */
171
  unsigned int dynamic_weak : 1;
172
  /* Symbol is referenced with a relocation where C/C++ pointer equality
173
     matters.  */
174
  unsigned int pointer_equality_needed : 1;
175
 
176
  /* String table index in .dynstr if this is a dynamic symbol.  */
177
  unsigned long dynstr_index;
178
 
179
  union
180
  {
181
    /* If this is a weak defined symbol from a dynamic object, this
182
       field points to a defined symbol with the same value, if there is
183
       one.  Otherwise it is NULL.  */
184
    struct elf_link_hash_entry *weakdef;
185
 
186
    /* Hash value of the name computed using the ELF hash function.
187
       Used part way through size_dynamic_sections, after we've finished
188
       with weakdefs.  */
189
    unsigned long elf_hash_value;
190
  } u;
191
 
192
  /* Version information.  */
193
  union
194
  {
195
    /* This field is used for a symbol which is not defined in a
196
       regular object.  It points to the version information read in
197
       from the dynamic object.  */
198
    Elf_Internal_Verdef *verdef;
199
    /* This field is used for a symbol which is defined in a regular
200
       object.  It is set up in size_dynamic_sections.  It points to
201
       the version information we should write out for this symbol.  */
202
    struct bfd_elf_version_tree *vertree;
203
  } verinfo;
204
 
205
  struct
206
  {
207
    /* Virtual table entry use information.  This array is nominally of size
208
       size/sizeof(target_void_pointer), though we have to be able to assume
209
       and track a size while the symbol is still undefined.  It is indexed
210
       via offset/sizeof(target_void_pointer).  */
211
    size_t size;
212
    bfd_boolean *used;
213
 
214
    /* Virtual table derivation info.  */
215
    struct elf_link_hash_entry *parent;
216
  } *vtable;
217
};
218
 
219
/* Will references to this symbol always reference the symbol
220
   in this object?  STV_PROTECTED is excluded from the visibility test
221
   here so that function pointer comparisons work properly.  Since
222
   function symbols not defined in an app are set to their .plt entry,
223
   it's necessary for shared libs to also reference the .plt even
224
   though the symbol is really local to the shared lib.  */
225
#define SYMBOL_REFERENCES_LOCAL(INFO, H) \
226
  _bfd_elf_symbol_refs_local_p (H, INFO, 0)
227
 
228
/* Will _calls_ to this symbol always call the version in this object?  */
229
#define SYMBOL_CALLS_LOCAL(INFO, H) \
230
  _bfd_elf_symbol_refs_local_p (H, INFO, 1)
231
 
232
/* Common symbols that are turned into definitions don't have the
233
   DEF_REGULAR flag set, so they might appear to be undefined.  */
234
#define ELF_COMMON_DEF_P(H) \
235
  (!(H)->def_regular                                                    \
236
   && !(H)->def_dynamic                                                 \
237
   && (H)->root.type == bfd_link_hash_defined)
238
 
239
/* Records local symbols to be emitted in the dynamic symbol table.  */
240
 
241
struct elf_link_local_dynamic_entry
242
{
243
  struct elf_link_local_dynamic_entry *next;
244
 
245
  /* The input bfd this symbol came from.  */
246
  bfd *input_bfd;
247
 
248
  /* The index of the local symbol being copied.  */
249
  long input_indx;
250
 
251
  /* The index in the outgoing dynamic symbol table.  */
252
  long dynindx;
253
 
254
  /* A copy of the input symbol.  */
255
  Elf_Internal_Sym isym;
256
};
257
 
258
struct elf_link_loaded_list
259
{
260
  struct elf_link_loaded_list *next;
261
  bfd *abfd;
262
};
263
 
264
/* Structures used by the eh_frame optimization code.  */
265
struct eh_cie_fde
266
{
267
  union {
268
    struct {
269
      /* If REMOVED == 1, this is the CIE that the FDE originally used.
270
         The CIE belongs to the same .eh_frame input section as the FDE.
271
 
272
         If REMOVED == 0, this is the CIE that we have chosen to use for
273
         the output FDE.  The CIE's REMOVED field is also 0, but the CIE
274
         might belong to a different .eh_frame input section from the FDE.  */
275
      struct eh_cie_fde *cie_inf;
276
      struct eh_cie_fde *next_for_section;
277
    } fde;
278
    struct {
279
      /* CIEs have three states:
280
 
281
         - REMOVED && !MERGED: Slated for removal because we haven't yet
282
           proven that an FDE needs it.  FULL_CIE, if nonnull, points to
283
           more detailed information about the CIE.
284
 
285
         - REMOVED && MERGED: We have merged this CIE with MERGED_WITH,
286
           which may not belong to the same input section.
287
 
288
         - !REMOVED: We have decided to keep this CIE.  SEC is the
289
           .eh_frame input section that contains the CIE.  */
290
      union {
291
        struct cie *full_cie;
292
        struct eh_cie_fde *merged_with;
293
        asection *sec;
294
      } u;
295
 
296
      /* True if we have marked relocations associated with this CIE.  */
297
      unsigned int gc_mark : 1;
298
 
299
      /* True if we have decided to turn an absolute LSDA encoding into
300
         a PC-relative one.  */
301
      unsigned int make_lsda_relative : 1;
302
 
303
      /* True if the CIE contains personality data and if that data
304
         uses a PC-relative encoding.  */
305
      unsigned int per_encoding_relative : 1;
306
 
307
      /* True if we need to add an 'R' (FDE encoding) entry to the
308
         CIE's augmentation data.  */
309
      unsigned int add_fde_encoding : 1;
310
 
311
      /* True if we have merged this CIE with another.  */
312
      unsigned int merged : 1;
313
    } cie;
314
  } u;
315
  unsigned int reloc_index;
316
  unsigned int size;
317
  unsigned int offset;
318
  unsigned int new_offset;
319
  unsigned int fde_encoding : 8;
320
  unsigned int lsda_encoding : 8;
321
  unsigned int lsda_offset : 8;
322
 
323
  /* True if this entry represents a CIE, false if it represents an FDE.  */
324
  unsigned int cie : 1;
325
 
326
  /* True if this entry is currently marked for removal.  */
327
  unsigned int removed : 1;
328
 
329
  /* True if we need to add a 'z' (augmentation size) entry to the CIE's
330
     augmentation data, and an associated byte to each of the CIE's FDEs.  */
331
  unsigned int add_augmentation_size : 1;
332
 
333
  /* True if we have decided to convert absolute FDE relocations into
334
     relative ones.  This applies to the first relocation in the FDE,
335
     which is against the code that the FDE describes.  */
336
  unsigned int make_relative : 1;
337
 
338
  /* Unused bits.  */
339
  unsigned int pad1 : 4;
340
 
341
  unsigned int *set_loc;
342
};
343
 
344
struct eh_frame_sec_info
345
{
346
  unsigned int count;
347
  struct cie *cies;
348
  struct eh_cie_fde entry[1];
349
};
350
 
351
struct eh_frame_array_ent
352
{
353
  bfd_vma initial_loc;
354
  bfd_vma fde;
355
};
356
 
357
struct htab;
358
 
359
struct eh_frame_hdr_info
360
{
361
  struct htab *cies;
362
  asection *hdr_sec;
363
  unsigned int fde_count, array_count;
364
  struct eh_frame_array_ent *array;
365
  /* TRUE if we should try to merge CIEs between input sections.  */
366
  bfd_boolean merge_cies;
367
  /* TRUE if all .eh_frames have been parsd.  */
368
  bfd_boolean parsed_eh_frames;
369
  /* TRUE if .eh_frame_hdr should contain the sorted search table.
370
     We build it if we successfully read all .eh_frame input sections
371
     and recognize them.  */
372
  bfd_boolean table;
373
};
374
 
375
/* ELF linker hash table.  */
376
 
377
struct elf_link_hash_table
378
{
379
  struct bfd_link_hash_table root;
380
 
381
  /* Whether we have created the special dynamic sections required
382
     when linking against or generating a shared object.  */
383
  bfd_boolean dynamic_sections_created;
384
 
385
  /* True if this target has relocatable executables, so needs dynamic
386
     section symbols.  */
387
  bfd_boolean is_relocatable_executable;
388
 
389
  /* The BFD used to hold special sections created by the linker.
390
     This will be the first BFD found which requires these sections to
391
     be created.  */
392
  bfd *dynobj;
393
 
394
  /* The value to use when initialising got.refcount/offset and
395
     plt.refcount/offset in an elf_link_hash_entry.  Set to zero when
396
     the values are refcounts.  Set to init_got_offset/init_plt_offset
397
     in size_dynamic_sections when the values may be offsets.  */
398
  union gotplt_union init_got_refcount;
399
  union gotplt_union init_plt_refcount;
400
 
401
  /* The value to use for got.refcount/offset and plt.refcount/offset
402
     when the values may be offsets.  Normally (bfd_vma) -1.  */
403
  union gotplt_union init_got_offset;
404
  union gotplt_union init_plt_offset;
405
 
406
  /* The number of symbols found in the link which must be put into
407
     the .dynsym section.  */
408
  bfd_size_type dynsymcount;
409
 
410
  /* The string table of dynamic symbols, which becomes the .dynstr
411
     section.  */
412
  struct elf_strtab_hash *dynstr;
413
 
414
  /* The number of buckets in the hash table in the .hash section.
415
     This is based on the number of dynamic symbols.  */
416
  bfd_size_type bucketcount;
417
 
418
  /* A linked list of DT_NEEDED names found in dynamic objects
419
     included in the link.  */
420
  struct bfd_link_needed_list *needed;
421
 
422
  /* Sections in the output bfd that provides a section symbol
423
     to be used by relocations emitted against local symbols.
424
     Most targets will not use data_index_section.  */
425
  asection *text_index_section;
426
  asection *data_index_section;
427
 
428
  /* The _GLOBAL_OFFSET_TABLE_ symbol.  */
429
  struct elf_link_hash_entry *hgot;
430
 
431
  /* The _PROCEDURE_LINKAGE_TABLE_ symbol.  */
432
  struct elf_link_hash_entry *hplt;
433
 
434
  /* A pointer to information used to merge SEC_MERGE sections.  */
435
  void *merge_info;
436
 
437
  /* Used to link stabs in sections.  */
438
  struct stab_info stab_info;
439
 
440
  /* Used by eh_frame code when editing .eh_frame.  */
441
  struct eh_frame_hdr_info eh_info;
442
 
443
  /* A linked list of local symbols to be added to .dynsym.  */
444
  struct elf_link_local_dynamic_entry *dynlocal;
445
 
446
  /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
447
     objects included in the link.  */
448
  struct bfd_link_needed_list *runpath;
449
 
450
  /* Cached first output tls section and size of PT_TLS segment.  */
451
  asection *tls_sec;
452
  bfd_size_type tls_size;
453
 
454
  /* A linked list of BFD's loaded in the link.  */
455
  struct elf_link_loaded_list *loaded;
456
};
457
 
458
/* Look up an entry in an ELF linker hash table.  */
459
 
460
#define elf_link_hash_lookup(table, string, create, copy, follow)       \
461
  ((struct elf_link_hash_entry *)                                       \
462
   bfd_link_hash_lookup (&(table)->root, (string), (create),            \
463
                         (copy), (follow)))
464
 
465
/* Traverse an ELF linker hash table.  */
466
 
467
#define elf_link_hash_traverse(table, func, info)                       \
468
  (bfd_link_hash_traverse                                               \
469
   (&(table)->root,                                                     \
470
    (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func),    \
471
    (info)))
472
 
473
/* Get the ELF linker hash table from a link_info structure.  */
474
 
475
#define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
476
 
477
/* Returns TRUE if the hash table is a struct elf_link_hash_table.  */
478
#define is_elf_hash_table(htab)                                         \
479
  (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
480
 
481
/* Used by bfd_section_from_r_symndx to cache a small number of local
482
   symbol to section mappings.  */
483
#define LOCAL_SYM_CACHE_SIZE 32
484
struct sym_sec_cache
485
{
486
  bfd *abfd;
487
  unsigned long indx[LOCAL_SYM_CACHE_SIZE];
488
  unsigned int shndx[LOCAL_SYM_CACHE_SIZE];
489
};
490
 
491
/* Constant information held for an ELF backend.  */
492
 
493
struct elf_size_info {
494
  unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr;
495
  unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note;
496
 
497
  /* The size of entries in the .hash section.  */
498
  unsigned char sizeof_hash_entry;
499
 
500
  /* The number of internal relocations to allocate per external
501
     relocation entry.  */
502
  unsigned char int_rels_per_ext_rel;
503
  /* We use some fixed size arrays.  This should be large enough to
504
     handle all back-ends.  */
505
#define MAX_INT_RELS_PER_EXT_REL 3
506
 
507
  unsigned char arch_size, log_file_align;
508
  unsigned char elfclass, ev_current;
509
  int (*write_out_phdrs)
510
    (bfd *, const Elf_Internal_Phdr *, unsigned int);
511
  bfd_boolean
512
    (*write_shdrs_and_ehdr) (bfd *);
513
  bfd_boolean (*checksum_contents)
514
    (bfd * , void (*) (const void *, size_t, void *), void *);
515
  void (*write_relocs)
516
    (bfd *, asection *, void *);
517
  bfd_boolean (*swap_symbol_in)
518
    (bfd *, const void *, const void *, Elf_Internal_Sym *);
519
  void (*swap_symbol_out)
520
    (bfd *, const Elf_Internal_Sym *, void *, void *);
521
  bfd_boolean (*slurp_reloc_table)
522
    (bfd *, asection *, asymbol **, bfd_boolean);
523
  long (*slurp_symbol_table)
524
    (bfd *, asymbol **, bfd_boolean);
525
  void (*swap_dyn_in)
526
    (bfd *, const void *, Elf_Internal_Dyn *);
527
  void (*swap_dyn_out)
528
    (bfd *, const Elf_Internal_Dyn *, void *);
529
 
530
  /* This function is called to swap in a REL relocation.  If an
531
     external relocation corresponds to more than one internal
532
     relocation, then all relocations are swapped in at once.  */
533
  void (*swap_reloc_in)
534
    (bfd *, const bfd_byte *, Elf_Internal_Rela *);
535
 
536
  /* This function is called to swap out a REL relocation.  */
537
  void (*swap_reloc_out)
538
    (bfd *, const Elf_Internal_Rela *, bfd_byte *);
539
 
540
  /* This function is called to swap in a RELA relocation.  If an
541
     external relocation corresponds to more than one internal
542
     relocation, then all relocations are swapped in at once.  */
543
  void (*swap_reloca_in)
544
    (bfd *, const bfd_byte *, Elf_Internal_Rela *);
545
 
546
  /* This function is called to swap out a RELA relocation.  */
547
  void (*swap_reloca_out)
548
    (bfd *, const Elf_Internal_Rela *, bfd_byte *);
549
};
550
 
551
#define elf_symbol_from(ABFD,S) \
552
        (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
553
          && (S)->the_bfd->tdata.elf_obj_data != 0) \
554
         ? (elf_symbol_type *) (S) \
555
         : 0)
556
 
557
enum elf_reloc_type_class {
558
  reloc_class_normal,
559
  reloc_class_relative,
560
  reloc_class_plt,
561
  reloc_class_copy
562
};
563
 
564
struct elf_reloc_cookie
565
{
566
  Elf_Internal_Rela *rels, *rel, *relend;
567
  Elf_Internal_Sym *locsyms;
568
  bfd *abfd;
569
  size_t locsymcount;
570
  size_t extsymoff;
571
  struct elf_link_hash_entry **sym_hashes;
572
  int r_sym_shift;
573
  bfd_boolean bad_symtab;
574
};
575
 
576
/* The level of IRIX compatibility we're striving for.  */
577
 
578
typedef enum {
579
  ict_none,
580
  ict_irix5,
581
  ict_irix6
582
} irix_compat_t;
583
 
584
/* Mapping of ELF section names and types.  */
585
struct bfd_elf_special_section
586
{
587
  const char *prefix;
588
  int prefix_length;
589
  /* 0 means name must match PREFIX exactly.
590
     -1 means name must start with PREFIX followed by an arbitrary string.
591
     -2 means name must match PREFIX exactly or consist of PREFIX followed
592
     by a dot then anything.
593
     > 0 means name must start with the first PREFIX_LENGTH chars of
594
     PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX.  */
595
  int suffix_length;
596
  int type;
597
  int attr;
598
};
599
 
600
enum action_discarded
601
  {
602
    COMPLAIN = 1,
603
    PRETEND = 2
604
  };
605
 
606
typedef asection * (*elf_gc_mark_hook_fn)
607
  (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
608
   struct elf_link_hash_entry *, Elf_Internal_Sym *);
609
 
610
struct elf_backend_data
611
{
612
  /* The architecture for this backend.  */
613
  enum bfd_architecture arch;
614
 
615
  /* The ELF machine code (EM_xxxx) for this backend.  */
616
  int elf_machine_code;
617
 
618
  /* EI_OSABI. */
619
  int elf_osabi;
620
 
621
  /* The maximum page size for this backend.  */
622
  bfd_vma maxpagesize;
623
 
624
  /* The minimum page size for this backend.  An input object will not be
625
     considered page aligned unless its sections are correctly aligned for
626
     pages at least this large.  May be smaller than maxpagesize.  */
627
  bfd_vma minpagesize;
628
 
629
  /* The common page size for this backend.  */
630
  bfd_vma commonpagesize;
631
 
632
  /* The BFD flags applied to sections created for dynamic linking.  */
633
  flagword dynamic_sec_flags;
634
 
635
  /* A function to translate an ELF RELA relocation to a BFD arelent
636
     structure.  */
637
  void (*elf_info_to_howto)
638
    (bfd *, arelent *, Elf_Internal_Rela *);
639
 
640
  /* A function to translate an ELF REL relocation to a BFD arelent
641
     structure.  */
642
  void (*elf_info_to_howto_rel)
643
    (bfd *, arelent *, Elf_Internal_Rela *);
644
 
645
  /* A function to determine whether a symbol is global when
646
     partitioning the symbol table into local and global symbols.
647
     This should be NULL for most targets, in which case the correct
648
     thing will be done.  MIPS ELF, at least on the Irix 5, has
649
     special requirements.  */
650
  bfd_boolean (*elf_backend_sym_is_global)
651
    (bfd *, asymbol *);
652
 
653
  /* The remaining functions are hooks which are called only if they
654
     are not NULL.  */
655
 
656
  /* A function to permit a backend specific check on whether a
657
     particular BFD format is relevant for an object file, and to
658
     permit the backend to set any global information it wishes.  When
659
     this is called elf_elfheader is set, but anything else should be
660
     used with caution.  If this returns FALSE, the check_format
661
     routine will return a bfd_error_wrong_format error.  */
662
  bfd_boolean (*elf_backend_object_p)
663
    (bfd *);
664
 
665
  /* A function to do additional symbol processing when reading the
666
     ELF symbol table.  This is where any processor-specific special
667
     section indices are handled.  */
668
  void (*elf_backend_symbol_processing)
669
    (bfd *, asymbol *);
670
 
671
  /* A function to do additional symbol processing after reading the
672
     entire ELF symbol table.  */
673
  bfd_boolean (*elf_backend_symbol_table_processing)
674
    (bfd *, elf_symbol_type *, unsigned int);
675
 
676
  /* A function to set the type of the info field.  Processor-specific
677
     types should be handled here.  */
678
  int (*elf_backend_get_symbol_type)
679
    (Elf_Internal_Sym *, int);
680
 
681
  /* A function to return the linker hash table entry of a symbol that
682
     might be satisfied by an archive symbol.  */
683
  struct elf_link_hash_entry * (*elf_backend_archive_symbol_lookup)
684
    (bfd *, struct bfd_link_info *, const char *);
685
 
686
  /* Return true if local section symbols should have a non-null st_name.
687
     NULL implies false.  */
688
  bfd_boolean (*elf_backend_name_local_section_symbols)
689
    (bfd *);
690
 
691
  /* A function to do additional processing on the ELF section header
692
     just before writing it out.  This is used to set the flags and
693
     type fields for some sections, or to actually write out data for
694
     unusual sections.  */
695
  bfd_boolean (*elf_backend_section_processing)
696
    (bfd *, Elf_Internal_Shdr *);
697
 
698
  /* A function to handle unusual section types when creating BFD
699
     sections from ELF sections.  */
700
  bfd_boolean (*elf_backend_section_from_shdr)
701
    (bfd *, Elf_Internal_Shdr *, const char *, int);
702
 
703
  /* A function to convert machine dependent ELF section header flags to
704
     BFD internal section header flags.  */
705
  bfd_boolean (*elf_backend_section_flags)
706
    (flagword *, const Elf_Internal_Shdr *);
707
 
708
  /* A function that returns a struct containing ELF section flags and
709
     type for the given BFD section.   */
710
  const struct bfd_elf_special_section * (*get_sec_type_attr)
711
    (bfd *, asection *);
712
 
713
  /* A function to handle unusual program segment types when creating BFD
714
     sections from ELF program segments.  */
715
  bfd_boolean (*elf_backend_section_from_phdr)
716
    (bfd *, Elf_Internal_Phdr *, int, const char *);
717
 
718
  /* A function to set up the ELF section header for a BFD section in
719
     preparation for writing it out.  This is where the flags and type
720
     fields are set for unusual sections.  */
721
  bfd_boolean (*elf_backend_fake_sections)
722
    (bfd *, Elf_Internal_Shdr *, asection *);
723
 
724
  /* A function to get the ELF section index for a BFD section.  If
725
     this returns TRUE, the section was found.  If it is a normal ELF
726
     section, *RETVAL should be left unchanged.  If it is not a normal
727
     ELF section *RETVAL should be set to the SHN_xxxx index.  */
728
  bfd_boolean (*elf_backend_section_from_bfd_section)
729
    (bfd *, asection *, int *retval);
730
 
731
  /* If this field is not NULL, it is called by the add_symbols phase
732
     of a link just before adding a symbol to the global linker hash
733
     table.  It may modify any of the fields as it wishes.  If *NAME
734
     is set to NULL, the symbol will be skipped rather than being
735
     added to the hash table.  This function is responsible for
736
     handling all processor dependent symbol bindings and section
737
     indices, and must set at least *FLAGS and *SEC for each processor
738
     dependent case; failure to do so will cause a link error.  */
739
  bfd_boolean (*elf_add_symbol_hook)
740
    (bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *,
741
     const char **name, flagword *flags, asection **sec, bfd_vma *value);
742
 
743
  /* If this field is not NULL, it is called by the elf_link_output_sym
744
     phase of a link for each symbol which will appear in the object file.  */
745
  bfd_boolean (*elf_backend_link_output_symbol_hook)
746
    (struct bfd_link_info *info, const char *, Elf_Internal_Sym *,
747
     asection *, struct elf_link_hash_entry *);
748
 
749
  /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
750
     linker the first time it encounters a dynamic object in the link.
751
     This function must create any sections required for dynamic
752
     linking.  The ABFD argument is a dynamic object.  The .interp,
753
     .dynamic, .dynsym, .dynstr, and .hash functions have already been
754
     created, and this function may modify the section flags if
755
     desired.  This function will normally create the .got and .plt
756
     sections, but different backends have different requirements.  */
757
  bfd_boolean (*elf_backend_create_dynamic_sections)
758
    (bfd *abfd, struct bfd_link_info *info);
759
 
760
  /* When creating a shared library, determine whether to omit the
761
     dynamic symbol for the section.  */
762
  bfd_boolean (*elf_backend_omit_section_dynsym)
763
    (bfd *output_bfd, struct bfd_link_info *info, asection *osec);
764
 
765
  /* Return TRUE if relocations of targets are compatible to the extent
766
     that CHECK_RELOCS will properly process them.  PR 4424.  */
767
  bfd_boolean (*relocs_compatible) (const bfd_target *, const bfd_target *);
768
 
769
  /* The CHECK_RELOCS function is called by the add_symbols phase of
770
     the ELF backend linker.  It is called once for each section with
771
     relocs of an object file, just after the symbols for the object
772
     file have been added to the global linker hash table.  The
773
     function must look through the relocs and do any special handling
774
     required.  This generally means allocating space in the global
775
     offset table, and perhaps allocating space for a reloc.  The
776
     relocs are always passed as Rela structures; if the section
777
     actually uses Rel structures, the r_addend field will always be
778
     zero.  */
779
  bfd_boolean (*check_relocs)
780
    (bfd *abfd, struct bfd_link_info *info, asection *o,
781
     const Elf_Internal_Rela *relocs);
782
 
783
  /* The CHECK_DIRECTIVES function is called once per input file by
784
     the add_symbols phase of the ELF backend linker.  The function
785
     must inspect the bfd and create any additional symbols according
786
     to any custom directives in the bfd.  */
787
  bfd_boolean (*check_directives)
788
    (bfd *abfd, struct bfd_link_info *info);
789
 
790
  /* The AS_NEEDED_CLEANUP function is called once per --as-needed
791
     input file that was not needed by the add_symbols phase of the
792
     ELF backend linker.  The function must undo any target specific
793
     changes in the symbol hash table.  */
794
  bfd_boolean (*as_needed_cleanup)
795
    (bfd *abfd, struct bfd_link_info *info);
796
 
797
  /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
798
     linker for every symbol which is defined by a dynamic object and
799
     referenced by a regular object.  This is called after all the
800
     input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
801
     function has been called.  The hash table entry should be
802
     bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
803
     defined in a section from a dynamic object.  Dynamic object
804
     sections are not included in the final link, and this function is
805
     responsible for changing the value to something which the rest of
806
     the link can deal with.  This will normally involve adding an
807
     entry to the .plt or .got or some such section, and setting the
808
     symbol to point to that.  */
809
  bfd_boolean (*elf_backend_adjust_dynamic_symbol)
810
    (struct bfd_link_info *info, struct elf_link_hash_entry *h);
811
 
812
  /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
813
     after all the linker input files have been seen but before the
814
     section sizes have been set.  This is called after
815
     ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS.  */
816
  bfd_boolean (*elf_backend_always_size_sections)
817
    (bfd *output_bfd, struct bfd_link_info *info);
818
 
819
  /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
820
     linker after all the linker input files have been seen but before
821
     the sections sizes have been set.  This is called after
822
     ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
823
     It is only called when linking against a dynamic object.  It must
824
     set the sizes of the dynamic sections, and may fill in their
825
     contents as well.  The generic ELF linker can handle the .dynsym,
826
     .dynstr and .hash sections.  This function must handle the
827
     .interp section and any sections created by the
828
     CREATE_DYNAMIC_SECTIONS entry point.  */
829
  bfd_boolean (*elf_backend_size_dynamic_sections)
830
    (bfd *output_bfd, struct bfd_link_info *info);
831
 
832
  /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections
833
     we keep to use as a base for relocs and symbols.  */
834
  void (*elf_backend_init_index_section)
835
    (bfd *output_bfd, struct bfd_link_info *info);
836
 
837
  /* The RELOCATE_SECTION function is called by the ELF backend linker
838
     to handle the relocations for a section.
839
 
840
     The relocs are always passed as Rela structures; if the section
841
     actually uses Rel structures, the r_addend field will always be
842
     zero.
843
 
844
     This function is responsible for adjust the section contents as
845
     necessary, and (if using Rela relocs and generating a
846
     relocatable output file) adjusting the reloc addend as
847
     necessary.
848
 
849
     This function does not have to worry about setting the reloc
850
     address or the reloc symbol index.
851
 
852
     LOCAL_SYMS is a pointer to the swapped in local symbols.
853
 
854
     LOCAL_SECTIONS is an array giving the section in the input file
855
     corresponding to the st_shndx field of each local symbol.
856
 
857
     The global hash table entry for the global symbols can be found
858
     via elf_sym_hashes (input_bfd).
859
 
860
     When generating relocatable output, this function must handle
861
     STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
862
     going to be the section symbol corresponding to the output
863
     section, which means that the addend must be adjusted
864
     accordingly.
865
 
866
     Returns FALSE on error, TRUE on success, 2 if successful and
867
     relocations should be written for this section.  */
868
  int (*elf_backend_relocate_section)
869
    (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd,
870
     asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs,
871
     Elf_Internal_Sym *local_syms, asection **local_sections);
872
 
873
  /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
874
     linker just before it writes a symbol out to the .dynsym section.
875
     The processor backend may make any required adjustment to the
876
     symbol.  It may also take the opportunity to set contents of the
877
     dynamic sections.  Note that FINISH_DYNAMIC_SYMBOL is called on
878
     all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
879
     on those symbols which are defined by a dynamic object.  */
880
  bfd_boolean (*elf_backend_finish_dynamic_symbol)
881
    (bfd *output_bfd, struct bfd_link_info *info,
882
     struct elf_link_hash_entry *h, Elf_Internal_Sym *sym);
883
 
884
  /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
885
     linker just before it writes all the dynamic sections out to the
886
     output file.  The FINISH_DYNAMIC_SYMBOL will have been called on
887
     all dynamic symbols.  */
888
  bfd_boolean (*elf_backend_finish_dynamic_sections)
889
    (bfd *output_bfd, struct bfd_link_info *info);
890
 
891
  /* A function to do any beginning processing needed for the ELF file
892
     before building the ELF headers and computing file positions.  */
893
  void (*elf_backend_begin_write_processing)
894
    (bfd *, struct bfd_link_info *);
895
 
896
  /* A function to do any final processing needed for the ELF file
897
     before writing it out.  The LINKER argument is TRUE if this BFD
898
     was created by the ELF backend linker.  */
899
  void (*elf_backend_final_write_processing)
900
    (bfd *, bfd_boolean linker);
901
 
902
  /* This function is called by get_program_header_size.  It should
903
     return the number of additional program segments which this BFD
904
     will need.  It should return -1 on error.  */
905
  int (*elf_backend_additional_program_headers)
906
    (bfd *, struct bfd_link_info *);
907
 
908
  /* This function is called to modify an existing segment map in a
909
     backend specific fashion.  */
910
  bfd_boolean (*elf_backend_modify_segment_map)
911
    (bfd *, struct bfd_link_info *);
912
 
913
  /* This function is called to modify program headers just before
914
     they are written.  */
915
  bfd_boolean (*elf_backend_modify_program_headers)
916
    (bfd *, struct bfd_link_info *);
917
 
918
  /* This function is called before section garbage collection to
919
     mark entry symbol sections.  */
920
  void (*gc_keep)
921
    (struct bfd_link_info *);
922
 
923
  /* This function is called during section garbage collection to
924
     mark sections that define global symbols.  */
925
  bfd_boolean (*gc_mark_dynamic_ref)
926
    (struct elf_link_hash_entry *, void *);
927
 
928
  /* This function is called during section gc to discover the section a
929
     particular relocation refers to.  */
930
  elf_gc_mark_hook_fn gc_mark_hook;
931
 
932
  /* This function, if defined, is called after the first gc marking pass
933
     to allow the backend to mark additional sections.  */
934
  bfd_boolean (*gc_mark_extra_sections)
935
    (struct bfd_link_info *, elf_gc_mark_hook_fn);
936
 
937
  /* This function, if defined, is called during the sweep phase of gc
938
     in order that a backend might update any data structures it might
939
     be maintaining.  */
940
  bfd_boolean (*gc_sweep_hook)
941
    (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
942
 
943
  /* This function, if defined, is called after the ELF headers have
944
     been created.  This allows for things like the OS and ABI versions
945
     to be changed.  */
946
  void (*elf_backend_post_process_headers)
947
    (bfd *, struct bfd_link_info *);
948
 
949
  /* This function, if defined, prints a symbol to file and returns the
950
     name of the symbol to be printed.  It should return NULL to fall
951
     back to default symbol printing.  */
952
  const char *(*elf_backend_print_symbol_all)
953
    (bfd *, void *, asymbol *);
954
 
955
  /* This function, if defined, is called after all local symbols and
956
     global symbols converted to locals are emitted into the symtab
957
     section.  It allows the backend to emit special local symbols
958
     not handled in the hash table.  */
959
  bfd_boolean (*elf_backend_output_arch_local_syms)
960
    (bfd *, struct bfd_link_info *, void *,
961
     bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *,
962
                      struct elf_link_hash_entry *));
963
 
964
  /* This function, if defined, is called after all symbols are emitted
965
     into the symtab section.  It allows the backend to emit special
966
     global symbols not handled in the hash table.  */
967
  bfd_boolean (*elf_backend_output_arch_syms)
968
    (bfd *, struct bfd_link_info *, void *,
969
     bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *,
970
                      struct elf_link_hash_entry *));
971
 
972
  /* Copy any information related to dynamic linking from a pre-existing
973
     symbol to a newly created symbol.  Also called to copy flags and
974
     other back-end info to a weakdef, in which case the symbol is not
975
     newly created and plt/got refcounts and dynamic indices should not
976
     be copied.  */
977
  void (*elf_backend_copy_indirect_symbol)
978
    (struct bfd_link_info *, struct elf_link_hash_entry *,
979
     struct elf_link_hash_entry *);
980
 
981
  /* Modify any information related to dynamic linking such that the
982
     symbol is not exported.  */
983
  void (*elf_backend_hide_symbol)
984
    (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean);
985
 
986
  /* A function to do additional symbol fixup, called by
987
     _bfd_elf_fix_symbol_flags.  */
988
  bfd_boolean (*elf_backend_fixup_symbol)
989
    (struct bfd_link_info *, struct elf_link_hash_entry *);
990
 
991
  /* Merge the backend specific symbol attribute.  */
992
  void (*elf_backend_merge_symbol_attribute)
993
    (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean,
994
     bfd_boolean);
995
 
996
  /* This function, if defined, will return a string containing the
997
     name of a target-specific dynamic tag.  */
998
  char *(*elf_backend_get_target_dtag)
999
    (bfd_vma);
1000
 
1001
  /* Decide whether an undefined symbol is special and can be ignored.
1002
     This is the case for OPTIONAL symbols on IRIX.  */
1003
  bfd_boolean (*elf_backend_ignore_undef_symbol)
1004
    (struct elf_link_hash_entry *);
1005
 
1006
  /* Emit relocations.  Overrides default routine for emitting relocs,
1007
     except during a relocatable link, or if all relocs are being emitted.  */
1008
  bfd_boolean (*elf_backend_emit_relocs)
1009
    (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
1010
     struct elf_link_hash_entry **);
1011
 
1012
  /* Count relocations.  Not called for relocatable links
1013
     or if all relocs are being preserved in the output.  */
1014
  unsigned int (*elf_backend_count_relocs)
1015
    (asection *, Elf_Internal_Rela *);
1016
 
1017
  /* This function, if defined, is called when an NT_PRSTATUS note is found
1018
     in a core file.  */
1019
  bfd_boolean (*elf_backend_grok_prstatus)
1020
    (bfd *, Elf_Internal_Note *);
1021
 
1022
  /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
1023
     note is found in a core file.  */
1024
  bfd_boolean (*elf_backend_grok_psinfo)
1025
    (bfd *, Elf_Internal_Note *);
1026
 
1027
  /* This function, if defined, is called to write a note to a corefile.  */
1028
  char *(*elf_backend_write_core_note)
1029
    (bfd *abfd, char *buf, int *bufsiz, int note_type, ...);
1030
 
1031
  /* This function returns class of a reloc type.  */
1032
  enum elf_reloc_type_class (*elf_backend_reloc_type_class)
1033
    (const Elf_Internal_Rela *);
1034
 
1035
  /* This function, if defined, removes information about discarded functions
1036
     from other sections which mention them.  */
1037
  bfd_boolean (*elf_backend_discard_info)
1038
    (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *);
1039
 
1040
  /* This function, if defined, signals that the function above has removed
1041
     the discarded relocations for this section.  */
1042
  bfd_boolean (*elf_backend_ignore_discarded_relocs)
1043
    (asection *);
1044
 
1045
  /* What to do when ld finds relocations against symbols defined in
1046
     discarded sections.  */
1047
  unsigned int (*action_discarded)
1048
    (asection *);
1049
 
1050
  /* This function returns the width of FDE pointers in bytes, or 0 if
1051
     that can't be determined for some reason.  The default definition
1052
     goes by the bfd's EI_CLASS.  */
1053
  unsigned int (*elf_backend_eh_frame_address_size)
1054
    (bfd *, asection *);
1055
 
1056
  /* These functions tell elf-eh-frame whether to attempt to turn
1057
     absolute or lsda encodings into pc-relative ones.  The default
1058
     definition enables these transformations.  */
1059
  bfd_boolean (*elf_backend_can_make_relative_eh_frame)
1060
     (bfd *, struct bfd_link_info *, asection *);
1061
  bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame)
1062
     (bfd *, struct bfd_link_info *, asection *);
1063
 
1064
  /* This function returns an encoding after computing the encoded
1065
     value (and storing it in ENCODED) for the given OFFSET into OSEC,
1066
     to be stored in at LOC_OFFSET into the LOC_SEC input section.
1067
     The default definition chooses a 32-bit PC-relative encoding.  */
1068
  bfd_byte (*elf_backend_encode_eh_address)
1069
     (bfd *abfd, struct bfd_link_info *info,
1070
      asection *osec, bfd_vma offset,
1071
      asection *loc_sec, bfd_vma loc_offset,
1072
      bfd_vma *encoded);
1073
 
1074
  /* This function, if defined, may write out the given section.
1075
     Returns TRUE if it did so and FALSE if the caller should.  */
1076
  bfd_boolean (*elf_backend_write_section)
1077
    (bfd *, struct bfd_link_info *, asection *, bfd_byte *);
1078
 
1079
  /* The level of IRIX compatibility we're striving for.
1080
     MIPS ELF specific function.  */
1081
  irix_compat_t (*elf_backend_mips_irix_compat)
1082
    (bfd *);
1083
 
1084
  reloc_howto_type *(*elf_backend_mips_rtype_to_howto)
1085
    (unsigned int, bfd_boolean);
1086
 
1087
  /* The swapping table to use when dealing with ECOFF information.
1088
     Used for the MIPS ELF .mdebug section.  */
1089
  const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
1090
 
1091
  /* This function implements `bfd_elf_bfd_from_remote_memory';
1092
     see elf.c, elfcode.h.  */
1093
  bfd *(*elf_backend_bfd_from_remote_memory)
1094
     (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
1095
      int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, int len));
1096
 
1097
  /* This function is used by `_bfd_elf_get_synthetic_symtab';
1098
     see elf.c.  */
1099
  bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *);
1100
 
1101
  /* Is symbol defined in common section?  */
1102
  bfd_boolean (*common_definition) (Elf_Internal_Sym *);
1103
 
1104
  /* Return a common section index for section.  */
1105
  unsigned int (*common_section_index) (asection *);
1106
 
1107
  /* Return a common section for section.  */
1108
  asection *(*common_section) (asection *);
1109
 
1110
  /* Return TRUE if we can merge 2 definitions.  */
1111
  bfd_boolean (*merge_symbol) (struct bfd_link_info *,
1112
                               struct elf_link_hash_entry **,
1113
                               struct elf_link_hash_entry *,
1114
                               Elf_Internal_Sym *, asection **,
1115
                               bfd_vma *, unsigned int *,
1116
                               bfd_boolean *, bfd_boolean *,
1117
                               bfd_boolean *, bfd_boolean *,
1118
                               bfd_boolean *, bfd_boolean *,
1119
                               bfd_boolean *, bfd_boolean *,
1120
                               bfd *, asection **,
1121
                               bfd_boolean *, bfd_boolean *,
1122
                               bfd_boolean *, bfd_boolean *,
1123
                               bfd *, asection **);
1124
 
1125
  /* Return TRUE if symbol should be hashed in the `.gnu.hash' section.  */
1126
  bfd_boolean (*elf_hash_symbol) (struct elf_link_hash_entry *);
1127
 
1128
  /* Return TRUE if type is a function symbol type.  */
1129
  bfd_boolean (*is_function_type) (unsigned int type);
1130
 
1131
  /* Used to handle bad SHF_LINK_ORDER input.  */
1132
  bfd_error_handler_type link_order_error_handler;
1133
 
1134
  /* Name of the PLT relocation section.  */
1135
  const char *relplt_name;
1136
 
1137
  /* Alternate EM_xxxx machine codes for this backend.  */
1138
  int elf_machine_alt1;
1139
  int elf_machine_alt2;
1140
 
1141
  const struct elf_size_info *s;
1142
 
1143
  /* An array of target specific special sections.  */
1144
  const struct bfd_elf_special_section *special_sections;
1145
 
1146
  /* The size in bytes of the header for the GOT.  This includes the
1147
     so-called reserved entries on some systems.  */
1148
  bfd_vma got_header_size;
1149
 
1150
  /* The vendor name to use for a processor-standard attributes section.  */
1151
  const char *obj_attrs_vendor;
1152
 
1153
  /* The section name to use for a processor-standard attributes section.  */
1154
  const char *obj_attrs_section;
1155
 
1156
  /* Return 1, 2 or 3 to indicate what type of arguments a
1157
     processor-specific tag takes.  */
1158
  int (*obj_attrs_arg_type) (int);
1159
 
1160
  /* The section type to use for an attributes section.  */
1161
  unsigned int obj_attrs_section_type;
1162
 
1163
  /* This is TRUE if the linker should act like collect and gather
1164
     global constructors and destructors by name.  This is TRUE for
1165
     MIPS ELF because the Irix 5 tools can not handle the .init
1166
     section.  */
1167
  unsigned collect : 1;
1168
 
1169
  /* This is TRUE if the linker should ignore changes to the type of a
1170
     symbol.  This is TRUE for MIPS ELF because some Irix 5 objects
1171
     record undefined functions as STT_OBJECT although the definitions
1172
     are STT_FUNC.  */
1173
  unsigned type_change_ok : 1;
1174
 
1175
  /* Whether the backend may use REL relocations.  (Some backends use
1176
     both REL and RELA relocations, and this flag is set for those
1177
     backends.)  */
1178
  unsigned may_use_rel_p : 1;
1179
 
1180
  /* Whether the backend may use RELA relocations.  (Some backends use
1181
     both REL and RELA relocations, and this flag is set for those
1182
     backends.)  */
1183
  unsigned may_use_rela_p : 1;
1184
 
1185
  /* Whether the default relocation type is RELA.  If a backend with
1186
     this flag set wants REL relocations for a particular section,
1187
     it must note that explicitly.  Similarly, if this flag is clear,
1188
     and the backend wants RELA relocations for a particular
1189
     section.  */
1190
  unsigned default_use_rela_p : 1;
1191
 
1192
  /* Set if RELA relocations for a relocatable link can be handled by
1193
     generic code.  Backends that set this flag need do nothing in the
1194
     backend relocate_section routine for relocatable linking.  */
1195
  unsigned rela_normal : 1;
1196
 
1197
  /* TRUE if addresses "naturally" sign extend.  This is used when
1198
     swapping in from Elf32 when BFD64.  */
1199
  unsigned sign_extend_vma : 1;
1200
 
1201
  unsigned want_got_plt : 1;
1202
  unsigned plt_readonly : 1;
1203
  unsigned want_plt_sym : 1;
1204
  unsigned plt_not_loaded : 1;
1205
  unsigned plt_alignment : 4;
1206
  unsigned can_gc_sections : 1;
1207
  unsigned can_refcount : 1;
1208
  unsigned want_got_sym : 1;
1209
  unsigned want_dynbss : 1;
1210
 
1211
  /* Targets which do not support physical addressing often require
1212
     that the p_paddr field in the section header to be set to zero.
1213
     This field indicates whether this behavior is required.  */
1214
  unsigned want_p_paddr_set_to_zero : 1;
1215
 
1216
  /* True if an object file lacking a .note.GNU-stack section
1217
     should be assumed to be requesting exec stack.  At least one
1218
     other file in the link needs to have a .note.GNU-stack section
1219
     for a PT_GNU_STACK segment to be created.  */
1220
  unsigned default_execstack : 1;
1221
};
1222
 
1223
/* Information stored for each BFD section in an ELF file.  This
1224
   structure is allocated by elf_new_section_hook.  */
1225
 
1226
struct bfd_elf_section_data
1227
{
1228
  /* The ELF header for this section.  */
1229
  Elf_Internal_Shdr this_hdr;
1230
 
1231
  /* The ELF header for the reloc section associated with this
1232
     section, if any.  */
1233
  Elf_Internal_Shdr rel_hdr;
1234
 
1235
  /* If there is a second reloc section associated with this section,
1236
     as can happen on Irix 6, this field points to the header.  */
1237
  Elf_Internal_Shdr *rel_hdr2;
1238
 
1239
  /* The number of relocations currently assigned to REL_HDR.  */
1240
  unsigned int rel_count;
1241
 
1242
  /* The number of relocations currently assigned to REL_HDR2.  */
1243
  unsigned int rel_count2;
1244
 
1245
  /* The ELF section number of this section.  */
1246
  int this_idx;
1247
 
1248
  /* The ELF section number of the reloc section indicated by
1249
     REL_HDR if any.  Only used for an output file.  */
1250
  int rel_idx;
1251
 
1252
  /* The ELF section number of the reloc section indicated by
1253
     REL_HDR2 if any.  Only used for an output file.  */
1254
  int rel_idx2;
1255
 
1256
  /* Used by the backend linker when generating a shared library to
1257
     record the dynamic symbol index for a section symbol
1258
     corresponding to this section.  A value of 0 means that there is
1259
     no dynamic symbol for this section.  */
1260
  int dynindx;
1261
 
1262
  /* A pointer to the linked-to section for SHF_LINK_ORDER.  */
1263
  asection *linked_to;
1264
 
1265
  /* Used by the backend linker to store the symbol hash table entries
1266
     associated with relocs against global symbols.  */
1267
  struct elf_link_hash_entry **rel_hashes;
1268
 
1269
  /* A pointer to the swapped relocs.  If the section uses REL relocs,
1270
     rather than RELA, all the r_addend fields will be zero.  This
1271
     pointer may be NULL.  It is used by the backend linker.  */
1272
  Elf_Internal_Rela *relocs;
1273
 
1274
  /* A pointer to a linked list tracking dynamic relocs copied for
1275
     local symbols.  */
1276
  void *local_dynrel;
1277
 
1278
  /* A pointer to the bfd section used for dynamic relocs.  */
1279
  asection *sreloc;
1280
 
1281
  union {
1282
    /* Group name, if this section is a member of a group.  */
1283
    const char *name;
1284
 
1285
    /* Group signature sym, if this is the SHT_GROUP section.  */
1286
    struct bfd_symbol *id;
1287
  } group;
1288
 
1289
  /* For a member of a group, points to the SHT_GROUP section.
1290
     NULL for the SHT_GROUP section itself and non-group sections.  */
1291
  asection *sec_group;
1292
 
1293
  /* A linked list of member sections in the group.  Circular when used by
1294
     the linker.  For the SHT_GROUP section, points at first member.  */
1295
  asection *next_in_group;
1296
 
1297
  /* The FDEs associated with this section.  The u.fde.next_in_section
1298
     field acts as a chain pointer.  */
1299
  struct eh_cie_fde *fde_list;
1300
 
1301
  /* A pointer used for various section optimizations.  */
1302
  void *sec_info;
1303
};
1304
 
1305
#define elf_section_data(sec)  ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
1306
#define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
1307
#define elf_section_type(sec)  (elf_section_data(sec)->this_hdr.sh_type)
1308
#define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
1309
#define elf_group_name(sec)    (elf_section_data(sec)->group.name)
1310
#define elf_group_id(sec)      (elf_section_data(sec)->group.id)
1311
#define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
1312
#define elf_fde_list(sec)      (elf_section_data(sec)->fde_list)
1313
#define elf_sec_group(sec)      (elf_section_data(sec)->sec_group)
1314
 
1315
#define xvec_get_elf_backend_data(xvec) \
1316
  ((const struct elf_backend_data *) (xvec)->backend_data)
1317
 
1318
#define get_elf_backend_data(abfd) \
1319
   xvec_get_elf_backend_data ((abfd)->xvec)
1320
 
1321
/* This struct is used to pass information to routines called via
1322
   elf_link_hash_traverse which must return failure.  */
1323
 
1324
struct elf_info_failed
1325
{
1326
  bfd_boolean failed;
1327
  struct bfd_link_info *info;
1328
  struct bfd_elf_version_tree *verdefs;
1329
};
1330
 
1331
/* This structure is used to pass information to
1332
   _bfd_elf_link_assign_sym_version.  */
1333
 
1334
struct elf_assign_sym_version_info
1335
{
1336
  /* Output BFD.  */
1337
  bfd *output_bfd;
1338
  /* General link information.  */
1339
  struct bfd_link_info *info;
1340
  /* Version tree.  */
1341
  struct bfd_elf_version_tree *verdefs;
1342
  /* Whether we had a failure.  */
1343
  bfd_boolean failed;
1344
};
1345
 
1346
/* This structure is used to pass information to
1347
   _bfd_elf_link_find_version_dependencies.  */
1348
 
1349
struct elf_find_verdep_info
1350
{
1351
  /* Output BFD.  */
1352
  bfd *output_bfd;
1353
  /* General link information.  */
1354
  struct bfd_link_info *info;
1355
  /* The number of dependencies.  */
1356
  unsigned int vers;
1357
  /* Whether we had a failure.  */
1358
  bfd_boolean failed;
1359
};
1360
 
1361
/* The maximum number of known object attributes for any target.  */
1362
#define NUM_KNOWN_OBJ_ATTRIBUTES 32
1363
 
1364
/* The value of an object attribute.  type & 1 indicates whether there
1365
   is an integer value; type & 2 indicates whether there is a string
1366
   value.  */
1367
 
1368
typedef struct obj_attribute
1369
{
1370
  int type;
1371
  unsigned int i;
1372
  char *s;
1373
} obj_attribute;
1374
 
1375
typedef struct obj_attribute_list
1376
{
1377
  struct obj_attribute_list *next;
1378
  int tag;
1379
  obj_attribute attr;
1380
} obj_attribute_list;
1381
 
1382
/* Object attributes may either be defined by the processor ABI, index
1383
   OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
1384
   (and possibly also processor-specific), index OBJ_ATTR_GNU.  */
1385
#define OBJ_ATTR_PROC 0
1386
#define OBJ_ATTR_GNU 1
1387
#define OBJ_ATTR_FIRST OBJ_ATTR_PROC
1388
#define OBJ_ATTR_LAST OBJ_ATTR_GNU
1389
 
1390
/* The following object attribute tags are taken as generic, for all
1391
   targets and for "gnu" where there is no target standard.  */
1392
enum
1393
{
1394
  Tag_NULL = 0,
1395
  Tag_File = 1,
1396
  Tag_Section = 2,
1397
  Tag_Symbol = 3,
1398
  Tag_compatibility = 32
1399
};
1400
 
1401
/* Enum used to identify target specific extensions to the elf_obj_tdata
1402
   structure.  Note the enums deliberately start from 1 so that we can
1403
   detect an uninitialized field.  The generic value is last so that
1404
   additions to this enum do not need to modify more than one line.  */
1405
enum elf_object_id
1406
{
1407
  ALPHA_ELF_TDATA = 1,
1408
  ARM_ELF_TDATA,
1409
  HPPA_ELF_TDATA,
1410
  I386_ELF_TDATA,
1411
  PPC32_ELF_TDATA,
1412
  PPC64_ELF_TDATA,
1413
  S390_ELF_TDATA,
1414
  SH_ELF_TDATA,
1415
  SPARC_ELF_TDATA,
1416
  X86_64_ELF_TDATA,
1417
  GENERIC_ELF_TDATA
1418
};
1419
 
1420
/* Some private data is stashed away for future use using the tdata pointer
1421
   in the bfd structure.  */
1422
 
1423
struct elf_obj_tdata
1424
{
1425
  Elf_Internal_Ehdr elf_header[1];      /* Actual data, but ref like ptr */
1426
  Elf_Internal_Shdr **elf_sect_ptr;
1427
  Elf_Internal_Phdr *phdr;
1428
  struct elf_segment_map *segment_map;
1429
  struct elf_strtab_hash *strtab_ptr;
1430
  int num_locals;
1431
  int num_globals;
1432
  unsigned int num_elf_sections;        /* elf_sect_ptr size */
1433
  int num_section_syms;
1434
  asymbol **section_syms;               /* STT_SECTION symbols for each section */
1435
  Elf_Internal_Shdr symtab_hdr;
1436
  Elf_Internal_Shdr shstrtab_hdr;
1437
  Elf_Internal_Shdr strtab_hdr;
1438
  Elf_Internal_Shdr dynsymtab_hdr;
1439
  Elf_Internal_Shdr dynstrtab_hdr;
1440
  Elf_Internal_Shdr dynversym_hdr;
1441
  Elf_Internal_Shdr dynverref_hdr;
1442
  Elf_Internal_Shdr dynverdef_hdr;
1443
  Elf_Internal_Shdr symtab_shndx_hdr;
1444
  unsigned int symtab_section, shstrtab_section;
1445
  unsigned int strtab_section, dynsymtab_section;
1446
  unsigned int symtab_shndx_section;
1447
  unsigned int dynversym_section, dynverdef_section, dynverref_section;
1448
  file_ptr next_file_pos;
1449
  bfd_vma gp;                           /* The gp value */
1450
  unsigned int gp_size;                 /* The gp size */
1451
 
1452
  /* Information grabbed from an elf core file.  */
1453
  int core_signal;
1454
  int core_pid;
1455
  int core_lwpid;
1456
  char* core_program;
1457
  char* core_command;
1458
 
1459
  /* A mapping from external symbols to entries in the linker hash
1460
     table, used when linking.  This is indexed by the symbol index
1461
     minus the sh_info field of the symbol table header.  */
1462
  struct elf_link_hash_entry **sym_hashes;
1463
 
1464
  /* Track usage and final offsets of GOT entries for local symbols.
1465
     This array is indexed by symbol index.  Elements are used
1466
     identically to "got" in struct elf_link_hash_entry.  */
1467
  union
1468
    {
1469
      bfd_signed_vma *refcounts;
1470
      bfd_vma *offsets;
1471
      struct got_entry **ents;
1472
    } local_got;
1473
 
1474
  /* The linker ELF emulation code needs to let the backend ELF linker
1475
     know what filename should be used for a dynamic object if the
1476
     dynamic object is found using a search.  The emulation code then
1477
     sometimes needs to know what name was actually used.  Until the
1478
     file has been added to the linker symbol table, this field holds
1479
     the name the linker wants.  After it has been added, it holds the
1480
     name actually used, which will be the DT_SONAME entry if there is
1481
     one.  */
1482
  const char *dt_name;
1483
 
1484
  /* Records the result of `get_program_header_size'.  */
1485
  bfd_size_type program_header_size;
1486
 
1487
  /* Used by find_nearest_line entry point.  */
1488
  void *line_info;
1489
 
1490
  /* Used by MIPS ELF find_nearest_line entry point.  The structure
1491
     could be included directly in this one, but there's no point to
1492
     wasting the memory just for the infrequently called
1493
     find_nearest_line.  */
1494
  struct mips_elf_find_line *find_line_info;
1495
 
1496
  /* A place to stash dwarf1 info for this bfd.  */
1497
  struct dwarf1_debug *dwarf1_find_line_info;
1498
 
1499
  /* A place to stash dwarf2 info for this bfd.  */
1500
  void *dwarf2_find_line_info;
1501
 
1502
  /* An array of stub sections indexed by symbol number, used by the
1503
     MIPS ELF linker.  FIXME: We should figure out some way to only
1504
     include this field for a MIPS ELF target.  */
1505
  asection **local_stubs;
1506
  asection **local_call_stubs;
1507
 
1508
  /* Used to determine if PT_GNU_EH_FRAME segment header should be
1509
     created.  */
1510
  asection *eh_frame_hdr;
1511
 
1512
  Elf_Internal_Shdr **group_sect_ptr;
1513
  int num_group;
1514
 
1515
  /* Number of symbol version definitions we are about to emit.  */
1516
  unsigned int cverdefs;
1517
 
1518
  /* Number of symbol version references we are about to emit.  */
1519
  unsigned int cverrefs;
1520
 
1521
  /* Segment flags for the PT_GNU_STACK segment.  */
1522
  unsigned int stack_flags;
1523
 
1524
  /* Symbol version definitions in external objects.  */
1525
  Elf_Internal_Verdef *verdef;
1526
 
1527
  /* Symbol version references to external objects.  */
1528
  Elf_Internal_Verneed *verref;
1529
 
1530
  /* The Irix 5 support uses two virtual sections, which represent
1531
     text/data symbols defined in dynamic objects.  */
1532
  asymbol *elf_data_symbol;
1533
  asymbol *elf_text_symbol;
1534
  asection *elf_data_section;
1535
  asection *elf_text_section;
1536
 
1537
  /* A pointer to the .eh_frame section.  */
1538
  asection *eh_frame_section;
1539
 
1540
  /* Whether a dyanmic object was specified normally on the linker
1541
     command line, or was specified when --as-needed was in effect,
1542
     or was found via a DT_NEEDED entry.  */
1543
  enum dynamic_lib_link_class dyn_lib_class;
1544
 
1545
  /* This is set to TRUE if the object was created by the backend
1546
     linker.  */
1547
  bfd_boolean linker;
1548
 
1549
  /* Irix 5 often screws up the symbol table, sorting local symbols
1550
     after global symbols.  This flag is set if the symbol table in
1551
     this BFD appears to be screwed up.  If it is, we ignore the
1552
     sh_info field in the symbol table header, and always read all the
1553
     symbols.  */
1554
  bfd_boolean bad_symtab;
1555
 
1556
  /* Used to determine if the e_flags field has been initialized */
1557
  bfd_boolean flags_init;
1558
 
1559
  /* Symbol buffer.  */
1560
  void *symbuf;
1561
 
1562
  obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES];
1563
  obj_attribute_list *other_obj_attributes[2];
1564
 
1565
  /* Called at the end of _bfd_elf_write_object_contents if not NULL.  */
1566
  bfd_boolean (*after_write_object_contents) (bfd *);
1567
  void *after_write_object_contents_info;
1568
 
1569
  /* NT_GNU_BUILD_ID note type.  */
1570
  bfd_size_type build_id_size;
1571
  bfd_byte *build_id;
1572
 
1573
  /* An identifier used to distinguish different target
1574
     specific extensions to this structure.  */
1575
  enum elf_object_id object_id;
1576
};
1577
 
1578
#define elf_tdata(bfd)          ((bfd) -> tdata.elf_obj_data)
1579
 
1580
#define elf_object_id(bfd)      (elf_tdata(bfd) -> object_id)
1581
#define elf_program_header_size(bfd) (elf_tdata(bfd) -> program_header_size)
1582
#define elf_elfheader(bfd)      (elf_tdata(bfd) -> elf_header)
1583
#define elf_elfsections(bfd)    (elf_tdata(bfd) -> elf_sect_ptr)
1584
#define elf_numsections(bfd)    (elf_tdata(bfd) -> num_elf_sections)
1585
#define elf_shstrtab(bfd)       (elf_tdata(bfd) -> strtab_ptr)
1586
#define elf_onesymtab(bfd)      (elf_tdata(bfd) -> symtab_section)
1587
#define elf_symtab_shndx(bfd)   (elf_tdata(bfd) -> symtab_shndx_section)
1588
#define elf_symtab_hdr(bfd)     (elf_tdata(bfd) -> symtab_hdr)
1589
#define elf_dynsymtab(bfd)      (elf_tdata(bfd) -> dynsymtab_section)
1590
#define elf_dynversym(bfd)      (elf_tdata(bfd) -> dynversym_section)
1591
#define elf_dynverdef(bfd)      (elf_tdata(bfd) -> dynverdef_section)
1592
#define elf_dynverref(bfd)      (elf_tdata(bfd) -> dynverref_section)
1593
#define elf_eh_frame_section(bfd) \
1594
                                (elf_tdata(bfd) -> eh_frame_section)
1595
#define elf_num_locals(bfd)     (elf_tdata(bfd) -> num_locals)
1596
#define elf_num_globals(bfd)    (elf_tdata(bfd) -> num_globals)
1597
#define elf_section_syms(bfd)   (elf_tdata(bfd) -> section_syms)
1598
#define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms)
1599
#define core_prpsinfo(bfd)      (elf_tdata(bfd) -> prpsinfo)
1600
#define core_prstatus(bfd)      (elf_tdata(bfd) -> prstatus)
1601
#define elf_gp(bfd)             (elf_tdata(bfd) -> gp)
1602
#define elf_gp_size(bfd)        (elf_tdata(bfd) -> gp_size)
1603
#define elf_sym_hashes(bfd)     (elf_tdata(bfd) -> sym_hashes)
1604
#define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
1605
#define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
1606
#define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
1607
#define elf_dt_name(bfd)        (elf_tdata(bfd) -> dt_name)
1608
#define elf_dyn_lib_class(bfd)  (elf_tdata(bfd) -> dyn_lib_class)
1609
#define elf_bad_symtab(bfd)     (elf_tdata(bfd) -> bad_symtab)
1610
#define elf_flags_init(bfd)     (elf_tdata(bfd) -> flags_init)
1611
#define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes)
1612
#define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes)
1613
#define elf_known_obj_attributes_proc(bfd) \
1614
  (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC])
1615
#define elf_other_obj_attributes_proc(bfd) \
1616
  (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
1617
 
1618
extern void _bfd_elf_swap_verdef_in
1619
  (bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *);
1620
extern void _bfd_elf_swap_verdef_out
1621
  (bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *);
1622
extern void _bfd_elf_swap_verdaux_in
1623
  (bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *);
1624
extern void _bfd_elf_swap_verdaux_out
1625
  (bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *);
1626
extern void _bfd_elf_swap_verneed_in
1627
  (bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *);
1628
extern void _bfd_elf_swap_verneed_out
1629
  (bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *);
1630
extern void _bfd_elf_swap_vernaux_in
1631
  (bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *);
1632
extern void _bfd_elf_swap_vernaux_out
1633
  (bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *);
1634
extern void _bfd_elf_swap_versym_in
1635
  (bfd *, const Elf_External_Versym *, Elf_Internal_Versym *);
1636
extern void _bfd_elf_swap_versym_out
1637
  (bfd *, const Elf_Internal_Versym *, Elf_External_Versym *);
1638
 
1639
extern unsigned int _bfd_elf_section_from_bfd_section
1640
  (bfd *, asection *);
1641
extern char *bfd_elf_string_from_elf_section
1642
  (bfd *, unsigned, unsigned);
1643
extern char *bfd_elf_get_str_section
1644
  (bfd *, unsigned);
1645
extern Elf_Internal_Sym *bfd_elf_get_elf_syms
1646
  (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *,
1647
   Elf_External_Sym_Shndx *);
1648
extern const char *bfd_elf_sym_name
1649
  (bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *, asection *);
1650
 
1651
extern bfd_boolean _bfd_elf_copy_private_bfd_data
1652
  (bfd *, bfd *);
1653
extern bfd_boolean _bfd_elf_print_private_bfd_data
1654
  (bfd *, void *);
1655
extern void bfd_elf_print_symbol
1656
  (bfd *, void *, asymbol *, bfd_print_symbol_type);
1657
 
1658
extern unsigned int _bfd_elf_eh_frame_address_size
1659
  (bfd *, asection *);
1660
extern bfd_byte _bfd_elf_encode_eh_address
1661
  (bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset,
1662
   asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded);
1663
extern bfd_boolean _bfd_elf_can_make_relative
1664
  (bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section);
1665
 
1666
extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
1667
  (const Elf_Internal_Rela *);
1668
extern bfd_vma _bfd_elf_rela_local_sym
1669
  (bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *);
1670
extern bfd_vma _bfd_elf_rel_local_sym
1671
  (bfd *, Elf_Internal_Sym *, asection **, bfd_vma);
1672
extern bfd_vma _bfd_elf_section_offset
1673
  (bfd *, struct bfd_link_info *, asection *, bfd_vma);
1674
 
1675
extern unsigned long bfd_elf_hash
1676
  (const char *);
1677
extern unsigned long bfd_elf_gnu_hash
1678
  (const char *);
1679
 
1680
extern bfd_reloc_status_type bfd_elf_generic_reloc
1681
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
1682
extern bfd_boolean bfd_elf_allocate_object
1683
  (bfd *, size_t, enum elf_object_id);
1684
extern bfd_boolean bfd_elf_make_generic_object
1685
  (bfd *);
1686
extern bfd_boolean bfd_elf_mkcorefile
1687
  (bfd *);
1688
extern Elf_Internal_Shdr *bfd_elf_find_section
1689
  (bfd *, char *);
1690
extern bfd_boolean _bfd_elf_make_section_from_shdr
1691
  (bfd *, Elf_Internal_Shdr *, const char *, int);
1692
extern bfd_boolean _bfd_elf_make_section_from_phdr
1693
  (bfd *, Elf_Internal_Phdr *, int, const char *);
1694
extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
1695
  (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
1696
extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
1697
  (bfd *);
1698
extern void _bfd_elf_link_hash_copy_indirect
1699
  (struct bfd_link_info *, struct elf_link_hash_entry *,
1700
   struct elf_link_hash_entry *);
1701
extern void _bfd_elf_link_hash_hide_symbol
1702
  (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean);
1703
extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
1704
  (struct bfd_link_info *, struct elf_link_hash_entry *);
1705
extern bfd_boolean _bfd_elf_link_hash_table_init
1706
  (struct elf_link_hash_table *, bfd *,
1707
   struct bfd_hash_entry *(*)
1708
     (struct bfd_hash_entry *, struct bfd_hash_table *, const char *),
1709
   unsigned int);
1710
extern bfd_boolean _bfd_elf_slurp_version_tables
1711
  (bfd *, bfd_boolean);
1712
extern bfd_boolean _bfd_elf_merge_sections
1713
  (bfd *, struct bfd_link_info *);
1714
extern bfd_boolean _bfd_elf_match_sections_by_type
1715
  (bfd *, const asection *, bfd *, const asection *);
1716
extern bfd_boolean bfd_elf_is_group_section
1717
  (bfd *, const struct bfd_section *);
1718
extern void _bfd_elf_section_already_linked
1719
  (bfd *, struct bfd_section *, struct bfd_link_info *);
1720
extern void bfd_elf_set_group_contents
1721
  (bfd *, asection *, void *);
1722
extern asection *_bfd_elf_check_kept_section
1723
  (asection *, struct bfd_link_info *);
1724
extern void _bfd_elf_link_just_syms
1725
  (asection *, struct bfd_link_info *);
1726
extern bfd_boolean _bfd_elf_copy_private_header_data
1727
  (bfd *, bfd *);
1728
extern bfd_boolean _bfd_elf_copy_private_symbol_data
1729
  (bfd *, asymbol *, bfd *, asymbol *);
1730
#define _bfd_generic_init_private_section_data \
1731
  _bfd_elf_init_private_section_data
1732
extern bfd_boolean _bfd_elf_init_private_section_data
1733
  (bfd *, asection *, bfd *, asection *, struct bfd_link_info *);
1734
extern bfd_boolean _bfd_elf_copy_private_section_data
1735
  (bfd *, asection *, bfd *, asection *);
1736
extern bfd_boolean _bfd_elf_write_object_contents
1737
  (bfd *);
1738
extern bfd_boolean _bfd_elf_write_corefile_contents
1739
  (bfd *);
1740
extern bfd_boolean _bfd_elf_set_section_contents
1741
  (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
1742
extern long _bfd_elf_get_symtab_upper_bound
1743
  (bfd *);
1744
extern long _bfd_elf_canonicalize_symtab
1745
  (bfd *, asymbol **);
1746
extern long _bfd_elf_get_dynamic_symtab_upper_bound
1747
  (bfd *);
1748
extern long _bfd_elf_canonicalize_dynamic_symtab
1749
  (bfd *, asymbol **);
1750
extern long _bfd_elf_get_synthetic_symtab
1751
  (bfd *, long, asymbol **, long, asymbol **, asymbol **);
1752
extern long _bfd_elf_get_reloc_upper_bound
1753
  (bfd *, sec_ptr);
1754
extern long _bfd_elf_canonicalize_reloc
1755
  (bfd *, sec_ptr, arelent **, asymbol **);
1756
extern long _bfd_elf_get_dynamic_reloc_upper_bound
1757
  (bfd *);
1758
extern long _bfd_elf_canonicalize_dynamic_reloc
1759
  (bfd *, arelent **, asymbol **);
1760
extern asymbol *_bfd_elf_make_empty_symbol
1761
  (bfd *);
1762
extern void _bfd_elf_get_symbol_info
1763
  (bfd *, asymbol *, symbol_info *);
1764
extern bfd_boolean _bfd_elf_is_local_label_name
1765
  (bfd *, const char *);
1766
extern alent *_bfd_elf_get_lineno
1767
  (bfd *, asymbol *);
1768
extern bfd_boolean _bfd_elf_set_arch_mach
1769
  (bfd *, enum bfd_architecture, unsigned long);
1770
extern bfd_boolean _bfd_elf_find_nearest_line
1771
  (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
1772
   unsigned int *);
1773
extern bfd_boolean _bfd_elf_find_line
1774
  (bfd *, asymbol **, asymbol *, const char **, unsigned int *);
1775
#define _bfd_generic_find_line _bfd_elf_find_line
1776
extern bfd_boolean _bfd_elf_find_inliner_info
1777
  (bfd *, const char **, const char **, unsigned int *);
1778
#define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
1779
#define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
1780
extern int _bfd_elf_sizeof_headers
1781
  (bfd *, struct bfd_link_info *);
1782
extern bfd_boolean _bfd_elf_new_section_hook
1783
  (bfd *, asection *);
1784
extern bfd_boolean _bfd_elf_init_reloc_shdr
1785
  (bfd *, Elf_Internal_Shdr *, asection *, bfd_boolean);
1786
extern const struct bfd_elf_special_section *_bfd_elf_get_special_section
1787
  (const char *, const struct bfd_elf_special_section *, unsigned int);
1788
extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr
1789
  (bfd *, asection *);
1790
 
1791
/* If the target doesn't have reloc handling written yet:  */
1792
extern void _bfd_elf_no_info_to_howto
1793
  (bfd *, arelent *, Elf_Internal_Rela *);
1794
 
1795
extern bfd_boolean bfd_section_from_shdr
1796
  (bfd *, unsigned int shindex);
1797
extern bfd_boolean bfd_section_from_phdr
1798
  (bfd *, Elf_Internal_Phdr *, int);
1799
 
1800
extern int _bfd_elf_symbol_from_bfd_symbol
1801
  (bfd *, asymbol **);
1802
 
1803
extern asection *bfd_section_from_r_symndx
1804
  (bfd *, struct sym_sec_cache *, asection *, unsigned long);
1805
extern asection *bfd_section_from_elf_index
1806
  (bfd *, unsigned int);
1807
extern struct bfd_strtab_hash *_bfd_elf_stringtab_init
1808
  (void);
1809
 
1810
extern struct elf_strtab_hash * _bfd_elf_strtab_init
1811
  (void);
1812
extern void _bfd_elf_strtab_free
1813
  (struct elf_strtab_hash *);
1814
extern bfd_size_type _bfd_elf_strtab_add
1815
  (struct elf_strtab_hash *, const char *, bfd_boolean);
1816
extern void _bfd_elf_strtab_addref
1817
  (struct elf_strtab_hash *, bfd_size_type);
1818
extern void _bfd_elf_strtab_delref
1819
  (struct elf_strtab_hash *, bfd_size_type);
1820
extern void _bfd_elf_strtab_clear_all_refs
1821
  (struct elf_strtab_hash *);
1822
extern bfd_size_type _bfd_elf_strtab_size
1823
  (struct elf_strtab_hash *);
1824
extern bfd_size_type _bfd_elf_strtab_offset
1825
  (struct elf_strtab_hash *, bfd_size_type);
1826
extern bfd_boolean _bfd_elf_strtab_emit
1827
  (bfd *, struct elf_strtab_hash *);
1828
extern void _bfd_elf_strtab_finalize
1829
  (struct elf_strtab_hash *);
1830
 
1831
extern void _bfd_elf_begin_eh_frame_parsing
1832
  (struct bfd_link_info *info);
1833
extern void _bfd_elf_parse_eh_frame
1834
  (bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *);
1835
extern void _bfd_elf_end_eh_frame_parsing
1836
  (struct bfd_link_info *info);
1837
 
1838
extern bfd_boolean _bfd_elf_discard_section_eh_frame
1839
  (bfd *, struct bfd_link_info *, asection *,
1840
   bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *);
1841
extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
1842
  (bfd *, struct bfd_link_info *);
1843
extern bfd_vma _bfd_elf_eh_frame_section_offset
1844
  (bfd *, struct bfd_link_info *, asection *, bfd_vma);
1845
extern bfd_boolean _bfd_elf_write_section_eh_frame
1846
  (bfd *, struct bfd_link_info *, asection *, bfd_byte *);
1847
extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
1848
  (bfd *, struct bfd_link_info *);
1849
extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
1850
  (struct bfd_link_info *);
1851
 
1852
extern bfd_boolean _bfd_elf_merge_symbol
1853
  (bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *,
1854
   asection **, bfd_vma *, unsigned int *,
1855
   struct elf_link_hash_entry **, bfd_boolean *,
1856
   bfd_boolean *, bfd_boolean *, bfd_boolean *);
1857
 
1858
extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *);
1859
 
1860
extern bfd_boolean _bfd_elf_add_default_symbol
1861
  (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
1862
   const char *, Elf_Internal_Sym *, asection **, bfd_vma *,
1863
   bfd_boolean *, bfd_boolean);
1864
 
1865
extern bfd_boolean _bfd_elf_export_symbol
1866
  (struct elf_link_hash_entry *, void *);
1867
 
1868
extern bfd_boolean _bfd_elf_link_find_version_dependencies
1869
  (struct elf_link_hash_entry *, void *);
1870
 
1871
extern bfd_boolean _bfd_elf_link_assign_sym_version
1872
  (struct elf_link_hash_entry *, void *);
1873
 
1874
extern long _bfd_elf_link_lookup_local_dynindx
1875
  (struct bfd_link_info *, bfd *, long);
1876
extern bfd_boolean _bfd_elf_compute_section_file_positions
1877
  (bfd *, struct bfd_link_info *);
1878
extern void _bfd_elf_assign_file_positions_for_relocs
1879
  (bfd *);
1880
extern file_ptr _bfd_elf_assign_file_position_for_section
1881
  (Elf_Internal_Shdr *, file_ptr, bfd_boolean);
1882
 
1883
extern bfd_boolean _bfd_elf_validate_reloc
1884
  (bfd *, arelent *);
1885
 
1886
extern bfd_boolean _bfd_elf_link_create_dynamic_sections
1887
  (bfd *, struct bfd_link_info *);
1888
extern bfd_boolean _bfd_elf_link_omit_section_dynsym
1889
  (bfd *, struct bfd_link_info *, asection *);
1890
extern bfd_boolean _bfd_elf_create_dynamic_sections
1891
  (bfd *, struct bfd_link_info *);
1892
extern bfd_boolean _bfd_elf_create_got_section
1893
  (bfd *, struct bfd_link_info *);
1894
extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym
1895
  (bfd *, struct bfd_link_info *, asection *, const char *);
1896
extern void _bfd_elf_init_1_index_section
1897
  (bfd *, struct bfd_link_info *);
1898
extern void _bfd_elf_init_2_index_sections
1899
  (bfd *, struct bfd_link_info *);
1900
 
1901
extern bfd_boolean _bfd_elfcore_make_pseudosection
1902
  (bfd *, char *, size_t, ufile_ptr);
1903
extern char *_bfd_elfcore_strndup
1904
  (bfd *, char *, size_t);
1905
 
1906
extern Elf_Internal_Rela *_bfd_elf_link_read_relocs
1907
  (bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean);
1908
 
1909
extern bfd_boolean _bfd_elf_link_size_reloc_section
1910
  (bfd *, Elf_Internal_Shdr *, asection *);
1911
 
1912
extern bfd_boolean _bfd_elf_link_output_relocs
1913
  (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
1914
   struct elf_link_hash_entry **);
1915
 
1916
extern bfd_boolean _bfd_elf_fix_symbol_flags
1917
  (struct elf_link_hash_entry *, struct elf_info_failed *);
1918
 
1919
extern bfd_boolean _bfd_elf_adjust_dynamic_symbol
1920
  (struct elf_link_hash_entry *, void *);
1921
 
1922
extern bfd_boolean _bfd_elf_adjust_dynamic_copy
1923
  (struct elf_link_hash_entry *, asection *);
1924
 
1925
extern bfd_boolean _bfd_elf_link_sec_merge_syms
1926
  (struct elf_link_hash_entry *, void *);
1927
 
1928
extern bfd_boolean _bfd_elf_dynamic_symbol_p
1929
  (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
1930
 
1931
extern bfd_boolean _bfd_elf_symbol_refs_local_p
1932
  (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
1933
 
1934
extern bfd_reloc_status_type bfd_elf_perform_complex_relocation
1935
  (bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma);
1936
 
1937
extern bfd_boolean _bfd_elf_setup_sections
1938
  (bfd *);
1939
 
1940
extern void _bfd_elf_set_osabi (bfd * , struct bfd_link_info *);
1941
 
1942
extern const bfd_target *bfd_elf32_object_p
1943
  (bfd *);
1944
extern const bfd_target *bfd_elf32_core_file_p
1945
  (bfd *);
1946
extern char *bfd_elf32_core_file_failing_command
1947
  (bfd *);
1948
extern int bfd_elf32_core_file_failing_signal
1949
  (bfd *);
1950
extern bfd_boolean bfd_elf32_core_file_matches_executable_p
1951
  (bfd *, bfd *);
1952
 
1953
extern bfd_boolean bfd_elf32_swap_symbol_in
1954
  (bfd *, const void *, const void *, Elf_Internal_Sym *);
1955
extern void bfd_elf32_swap_symbol_out
1956
  (bfd *, const Elf_Internal_Sym *, void *, void *);
1957
extern void bfd_elf32_swap_reloc_in
1958
  (bfd *, const bfd_byte *, Elf_Internal_Rela *);
1959
extern void bfd_elf32_swap_reloc_out
1960
  (bfd *, const Elf_Internal_Rela *, bfd_byte *);
1961
extern void bfd_elf32_swap_reloca_in
1962
  (bfd *, const bfd_byte *, Elf_Internal_Rela *);
1963
extern void bfd_elf32_swap_reloca_out
1964
  (bfd *, const Elf_Internal_Rela *, bfd_byte *);
1965
extern void bfd_elf32_swap_phdr_in
1966
  (bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *);
1967
extern void bfd_elf32_swap_phdr_out
1968
  (bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *);
1969
extern void bfd_elf32_swap_dyn_in
1970
  (bfd *, const void *, Elf_Internal_Dyn *);
1971
extern void bfd_elf32_swap_dyn_out
1972
  (bfd *, const Elf_Internal_Dyn *, void *);
1973
extern long bfd_elf32_slurp_symbol_table
1974
  (bfd *, asymbol **, bfd_boolean);
1975
extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
1976
  (bfd *);
1977
extern int bfd_elf32_write_out_phdrs
1978
  (bfd *, const Elf_Internal_Phdr *, unsigned int);
1979
extern bfd_boolean bfd_elf32_checksum_contents
1980
  (bfd * , void (*) (const void *, size_t, void *), void *);
1981
extern void bfd_elf32_write_relocs
1982
  (bfd *, asection *, void *);
1983
extern bfd_boolean bfd_elf32_slurp_reloc_table
1984
  (bfd *, asection *, asymbol **, bfd_boolean);
1985
 
1986
extern const bfd_target *bfd_elf64_object_p
1987
  (bfd *);
1988
extern const bfd_target *bfd_elf64_core_file_p
1989
  (bfd *);
1990
extern char *bfd_elf64_core_file_failing_command
1991
  (bfd *);
1992
extern int bfd_elf64_core_file_failing_signal
1993
  (bfd *);
1994
extern bfd_boolean bfd_elf64_core_file_matches_executable_p
1995
  (bfd *, bfd *);
1996
 
1997
extern bfd_boolean bfd_elf64_swap_symbol_in
1998
  (bfd *, const void *, const void *, Elf_Internal_Sym *);
1999
extern void bfd_elf64_swap_symbol_out
2000
  (bfd *, const Elf_Internal_Sym *, void *, void *);
2001
extern void bfd_elf64_swap_reloc_in
2002
  (bfd *, const bfd_byte *, Elf_Internal_Rela *);
2003
extern void bfd_elf64_swap_reloc_out
2004
  (bfd *, const Elf_Internal_Rela *, bfd_byte *);
2005
extern void bfd_elf64_swap_reloca_in
2006
  (bfd *, const bfd_byte *, Elf_Internal_Rela *);
2007
extern void bfd_elf64_swap_reloca_out
2008
  (bfd *, const Elf_Internal_Rela *, bfd_byte *);
2009
extern void bfd_elf64_swap_phdr_in
2010
  (bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *);
2011
extern void bfd_elf64_swap_phdr_out
2012
  (bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *);
2013
extern void bfd_elf64_swap_dyn_in
2014
  (bfd *, const void *, Elf_Internal_Dyn *);
2015
extern void bfd_elf64_swap_dyn_out
2016
  (bfd *, const Elf_Internal_Dyn *, void *);
2017
extern long bfd_elf64_slurp_symbol_table
2018
  (bfd *, asymbol **, bfd_boolean);
2019
extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
2020
  (bfd *);
2021
extern int bfd_elf64_write_out_phdrs
2022
  (bfd *, const Elf_Internal_Phdr *, unsigned int);
2023
extern bfd_boolean bfd_elf64_checksum_contents
2024
  (bfd * , void (*) (const void *, size_t, void *), void *);
2025
extern void bfd_elf64_write_relocs
2026
  (bfd *, asection *, void *);
2027
extern bfd_boolean bfd_elf64_slurp_reloc_table
2028
  (bfd *, asection *, asymbol **, bfd_boolean);
2029
 
2030
extern bfd_boolean _bfd_elf_default_relocs_compatible
2031
  (const bfd_target *, const bfd_target *);
2032
 
2033
extern bfd_boolean _bfd_elf_relocs_compatible
2034
  (const bfd_target *, const bfd_target *);
2035
 
2036
extern struct elf_link_hash_entry *_bfd_elf_archive_symbol_lookup
2037
  (bfd *, struct bfd_link_info *, const char *);
2038
extern bfd_boolean bfd_elf_link_add_symbols
2039
  (bfd *, struct bfd_link_info *);
2040
extern bfd_boolean _bfd_elf_add_dynamic_entry
2041
  (struct bfd_link_info *, bfd_vma, bfd_vma);
2042
 
2043
extern bfd_boolean bfd_elf_link_record_dynamic_symbol
2044
  (struct bfd_link_info *, struct elf_link_hash_entry *);
2045
 
2046
extern int bfd_elf_link_record_local_dynamic_symbol
2047
  (struct bfd_link_info *, bfd *, long);
2048
 
2049
extern void bfd_elf_link_mark_dynamic_symbol
2050
  (struct bfd_link_info *, struct elf_link_hash_entry *,
2051
   Elf_Internal_Sym *);
2052
 
2053
extern bfd_boolean _bfd_elf_close_and_cleanup
2054
  (bfd *);
2055
 
2056
extern bfd_boolean _bfd_elf_common_definition
2057
  (Elf_Internal_Sym *);
2058
 
2059
extern unsigned int _bfd_elf_common_section_index
2060
  (asection *);
2061
 
2062
extern asection *_bfd_elf_common_section
2063
  (asection *);
2064
 
2065
extern void _bfd_dwarf2_cleanup_debug_info
2066
  (bfd *);
2067
 
2068
extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
2069
  (bfd *, arelent *, struct bfd_symbol *, void *,
2070
   asection *, bfd *, char **);
2071
 
2072
extern bfd_boolean bfd_elf_final_link
2073
  (bfd *, struct bfd_link_info *);
2074
 
2075
extern void _bfd_elf_gc_keep
2076
  (struct bfd_link_info *info);
2077
 
2078
extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
2079
  (struct elf_link_hash_entry *h, void *inf);
2080
 
2081
extern bfd_boolean bfd_elf_gc_sections
2082
  (bfd *, struct bfd_link_info *);
2083
 
2084
extern bfd_boolean bfd_elf_gc_record_vtinherit
2085
  (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma);
2086
 
2087
extern bfd_boolean bfd_elf_gc_record_vtentry
2088
  (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma);
2089
 
2090
extern asection *_bfd_elf_gc_mark_hook
2091
  (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
2092
   struct elf_link_hash_entry *, Elf_Internal_Sym *);
2093
 
2094
extern asection *_bfd_elf_gc_mark_rsec
2095
  (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn,
2096
   struct elf_reloc_cookie *);
2097
 
2098
extern bfd_boolean _bfd_elf_gc_mark_reloc
2099
  (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn,
2100
   struct elf_reloc_cookie *);
2101
 
2102
extern bfd_boolean _bfd_elf_gc_mark_fdes
2103
  (struct bfd_link_info *, asection *, asection *, elf_gc_mark_hook_fn,
2104
   struct elf_reloc_cookie *);
2105
 
2106
extern bfd_boolean _bfd_elf_gc_mark
2107
  (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn);
2108
 
2109
extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
2110
  (bfd *, struct bfd_link_info *);
2111
 
2112
extern bfd_boolean bfd_elf_gc_common_final_link
2113
  (bfd *, struct bfd_link_info *);
2114
 
2115
extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
2116
  (bfd_vma, void *);
2117
 
2118
extern struct elf_segment_map * _bfd_elf_make_dynamic_segment
2119
  (bfd *, asection *);
2120
 
2121
extern bfd_boolean _bfd_elf_map_sections_to_segments
2122
  (bfd *, struct bfd_link_info *);
2123
 
2124
extern bfd_boolean _bfd_elf_is_function_type (unsigned int);
2125
 
2126
extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section
2127
  (bfd * abfd, asection * section);
2128
 
2129
/* Exported interface for writing elf corefile notes. */
2130
extern char *elfcore_write_note
2131
  (bfd *, char *, int *, const char *, int, const void *, int);
2132
extern char *elfcore_write_prpsinfo
2133
  (bfd *, char *, int *, const char *, const char *);
2134
extern char *elfcore_write_prstatus
2135
  (bfd *, char *, int *, long, int, const void *);
2136
extern char * elfcore_write_pstatus
2137
  (bfd *, char *, int *, long, int, const void *);
2138
extern char *elfcore_write_prfpreg
2139
  (bfd *, char *, int *, const void *, int);
2140
extern char *elfcore_write_prxfpreg
2141
  (bfd *, char *, int *, const void *, int);
2142
extern char *elfcore_write_ppc_vmx
2143
  (bfd *, char *, int *, const void *, int);
2144
extern char *elfcore_write_lwpstatus
2145
  (bfd *, char *, int *, long, int, const void *);
2146
 
2147
extern bfd *_bfd_elf32_bfd_from_remote_memory
2148
  (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
2149
   int (*target_read_memory) (bfd_vma, bfd_byte *, int));
2150
extern bfd *_bfd_elf64_bfd_from_remote_memory
2151
  (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
2152
   int (*target_read_memory) (bfd_vma, bfd_byte *, int));
2153
 
2154
extern bfd_vma bfd_elf_obj_attr_size (bfd *);
2155
extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma);
2156
extern int bfd_elf_get_obj_attr_int (bfd *, int, int);
2157
extern void bfd_elf_add_obj_attr_int (bfd *, int, int, unsigned int);
2158
#define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
2159
  bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2160
extern void bfd_elf_add_obj_attr_string (bfd *, int, int, const char *);
2161
#define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
2162
  bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2163
extern void bfd_elf_add_obj_attr_compat (bfd *, int, unsigned int,
2164
                                         const char *);
2165
#define bfd_elf_add_proc_attr_compat(BFD, INTVAL, STRVAL) \
2166
  bfd_elf_add_obj_attr_compat ((BFD), OBJ_ATTR_PROC, (INTVAL), (STRVAL))
2167
 
2168
extern char *_bfd_elf_attr_strdup (bfd *, const char *);
2169
extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *);
2170
extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, int);
2171
extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *);
2172
extern bfd_boolean _bfd_elf_merge_object_attributes (bfd *, bfd *);
2173
 
2174
/* Large common section.  */
2175
extern asection _bfd_elf_large_com_section;
2176
 
2177
/* SH ELF specific routine.  */
2178
 
2179
extern bfd_boolean _sh_elf_set_mach_from_flags
2180
  (bfd *);
2181
 
2182
/* This is the condition under which finish_dynamic_symbol will be called.
2183
   If our finish_dynamic_symbol isn't called, we'll need to do something
2184
   about initializing any .plt and .got entries in relocate_section.  */
2185
#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
2186
  ((DYN)                                                                \
2187
   && ((SHARED) || !(H)->forced_local)                                  \
2188
   && ((H)->dynindx != -1 || (H)->forced_local))
2189
 
2190
/* This macro is to avoid lots of duplicated code in the body
2191
   of xxx_relocate_section() in the various elfxx-xxxx.c files.  */
2192
#define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel,    \
2193
                                r_symndx, symtab_hdr, sym_hashes,       \
2194
                                h, sec, relocation,                     \
2195
                                unresolved_reloc, warned)               \
2196
  do                                                                    \
2197
    {                                                                   \
2198
      /* It seems this can happen with erroneous or unsupported         \
2199
         input (mixing a.out and elf in an archive, for example.)  */   \
2200
      if (sym_hashes == NULL)                                           \
2201
        return FALSE;                                                   \
2202
                                                                        \
2203
      h = sym_hashes[r_symndx - symtab_hdr->sh_info];                   \
2204
                                                                        \
2205
      while (h->root.type == bfd_link_hash_indirect                     \
2206
             || h->root.type == bfd_link_hash_warning)                  \
2207
        h = (struct elf_link_hash_entry *) h->root.u.i.link;            \
2208
                                                                        \
2209
      warned = FALSE;                                                   \
2210
      unresolved_reloc = FALSE;                                         \
2211
      relocation = 0;                                                    \
2212
      if (h->root.type == bfd_link_hash_defined                         \
2213
          || h->root.type == bfd_link_hash_defweak)                     \
2214
        {                                                               \
2215
          sec = h->root.u.def.section;                                  \
2216
          if (sec == NULL                                               \
2217
              || sec->output_section == NULL)                           \
2218
            /* Set a flag that will be cleared later if we find a       \
2219
               relocation value for this symbol.  output_section        \
2220
               is typically NULL for symbols satisfied by a shared      \
2221
               library.  */                                             \
2222
            unresolved_reloc = TRUE;                                    \
2223
          else                                                          \
2224
            relocation = (h->root.u.def.value                           \
2225
                          + sec->output_section->vma                    \
2226
                          + sec->output_offset);                        \
2227
        }                                                               \
2228
      else if (h->root.type == bfd_link_hash_undefweak)                 \
2229
        ;                                                               \
2230
      else if (info->unresolved_syms_in_objects == RM_IGNORE            \
2231
               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)          \
2232
        ;                                                               \
2233
      else if (!info->relocatable)                                      \
2234
        {                                                               \
2235
          bfd_boolean err;                                              \
2236
          err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR  \
2237
                 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT);       \
2238
          if (!info->callbacks->undefined_symbol (info,                 \
2239
                                                  h->root.root.string,  \
2240
                                                  input_bfd,            \
2241
                                                  input_section,        \
2242
                                                  rel->r_offset, err))  \
2243
            return FALSE;                                               \
2244
          warned = TRUE;                                                \
2245
        }                                                               \
2246
    }                                                                   \
2247
  while (0)
2248
 
2249
/* Will a symbol be bound to the the definition within the shared
2250
   library, if any.  */
2251
#define SYMBOLIC_BIND(INFO, H) \
2252
    ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic))
2253
 
2254
#endif /* _LIBELF_H_ */

powered by: WebSVN 2.1.0

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