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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [bfd/] [elf-bfd.h] - Blame information for rev 225

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1 24 jeremybenn
/* BFD back-end data structures for ELF files.
2
   Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
3 225 jeremybenn
   2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4
   Free Software Foundation, Inc.
5 24 jeremybenn
   Written by Cygnus Support.
6
 
7
   This file is part of BFD, the Binary File Descriptor library.
8
 
9
   This program is free software; you can redistribute it and/or modify
10
   it under the terms of the GNU General Public License as published by
11
   the Free Software Foundation; either version 3 of the License, or
12
   (at your option) any later version.
13
 
14
   This program is distributed in the hope that it will be useful,
15
   but WITHOUT ANY WARRANTY; without even the implied warranty of
16
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
   GNU General Public License for more details.
18
 
19
   You should have received a copy of the GNU General Public License
20
   along with this program; if not, write to the Free Software
21
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22
   MA 02110-1301, USA.  */
23
 
24
#ifndef _LIBELF_H_
25
#define _LIBELF_H_ 1
26
 
27
#include "elf/common.h"
28 225 jeremybenn
#include "elf/external.h"
29 24 jeremybenn
#include "elf/internal.h"
30
#include "bfdlink.h"
31
 
32
/* The number of entries in a section is its size divided by the size
33
   of a single entry.  This is normally only applicable to reloc and
34 225 jeremybenn
   symbol table sections.
35
   PR 9934: It is possible to have relocations that do not refer to
36
   symbols, thus it is also possible to have a relocation section in
37
   an object file, but no symbol table.  */
38
#define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0)
39 24 jeremybenn
 
40
/* If size isn't specified as 64 or 32, NAME macro should fail.  */
41
#ifndef NAME
42
#if ARCH_SIZE == 64
43
#define NAME(x, y) x ## 64 ## _ ## y
44
#endif
45
#if ARCH_SIZE == 32
46
#define NAME(x, y) x ## 32 ## _ ## y
47
#endif
48
#endif
49
 
50
#ifndef NAME
51
#define NAME(x, y) x ## NOSIZE ## _ ## y
52
#endif
53
 
54
#define ElfNAME(X)      NAME(Elf,X)
55
#define elfNAME(X)      NAME(elf,X)
56
 
57
/* Information held for an ELF symbol.  The first field is the
58
   corresponding asymbol.  Every symbol is an ELF file is actually a
59
   pointer to this structure, although it is often handled as a
60
   pointer to an asymbol.  */
61
 
62
typedef struct
63
{
64
  /* The BFD symbol.  */
65
  asymbol symbol;
66
  /* ELF symbol information.  */
67
  Elf_Internal_Sym internal_elf_sym;
68
  /* Backend specific information.  */
69
  union
70
    {
71
      unsigned int hppa_arg_reloc;
72
      void *mips_extr;
73
      void *any;
74
    }
75
  tc_data;
76
 
77
  /* Version information.  This is from an Elf_Internal_Versym
78
     structure in a SHT_GNU_versym section.  It is zero if there is no
79
     version information.  */
80
  unsigned short version;
81
 
82
} elf_symbol_type;
83
 
84
struct elf_strtab_hash;
85
struct got_entry;
86
struct plt_entry;
87
 
88 225 jeremybenn
union gotplt_union
89
  {
90
    bfd_signed_vma refcount;
91
    bfd_vma offset;
92
    struct got_entry *glist;
93
    struct plt_entry *plist;
94
  };
95
 
96
struct elf_link_virtual_table_entry
97
  {
98
    /* Virtual table entry use information.  This array is nominally of size
99
       size/sizeof(target_void_pointer), though we have to be able to assume
100
       and track a size while the symbol is still undefined.  It is indexed
101
       via offset/sizeof(target_void_pointer).  */
102
    size_t size;
103
    bfd_boolean *used;
104
 
105
    /* Virtual table derivation info.  */
106
    struct elf_link_hash_entry *parent;
107
  };
108
 
109 24 jeremybenn
/* ELF linker hash table entries.  */
110
 
111
struct elf_link_hash_entry
112
{
113
  struct bfd_link_hash_entry root;
114
 
115
  /* Symbol index in output file.  This is initialized to -1.  It is
116
     set to -2 if the symbol is used by a reloc.  */
117
  long indx;
118
 
119
  /* Symbol index as a dynamic symbol.  Initialized to -1, and remains
120
     -1 if this is not a dynamic symbol.  */
121
  /* ??? Note that this is consistently used as a synonym for tests
122
     against whether we can perform various simplifying transformations
123
     to the code.  (E.g. changing a pc-relative jump to a PLT entry
124
     into a pc-relative jump to the target function.)  That test, which
125
     is often relatively complex, and someplaces wrong or incomplete,
126
     should really be replaced by a predicate in elflink.c.
127
 
128
     End result: this field -1 does not indicate that the symbol is
129
     not in the dynamic symbol table, but rather that the symbol is
130
     not visible outside this DSO.  */
131
  long dynindx;
132
 
133
  /* If this symbol requires an entry in the global offset table, the
134
     processor specific backend uses this field to track usage and
135
     final offset.  Two schemes are supported:  The first assumes that
136
     a symbol may only have one GOT entry, and uses REFCOUNT until
137
     size_dynamic_sections, at which point the contents of the .got is
138
     fixed.  Afterward, if OFFSET is -1, then the symbol does not
139
     require a global offset table entry.  The second scheme allows
140
     multiple GOT entries per symbol, managed via a linked list
141
     pointed to by GLIST.  */
142 225 jeremybenn
  union gotplt_union got;
143 24 jeremybenn
 
144
  /* Same, but tracks a procedure linkage table entry.  */
145
  union gotplt_union plt;
146
 
147
  /* Symbol size.  */
148
  bfd_size_type size;
149
 
150
  /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.).  */
151
  unsigned int type : 8;
152
 
153
  /* Symbol st_other value, symbol visibility.  */
154
  unsigned int other : 8;
155
 
156 225 jeremybenn
  /* Symbol is referenced by a non-shared object (other than the object
157
     in which it is defined).  */
158 24 jeremybenn
  unsigned int ref_regular : 1;
159
  /* Symbol is defined by a non-shared object.  */
160
  unsigned int def_regular : 1;
161
  /* Symbol is referenced by a shared object.  */
162
  unsigned int ref_dynamic : 1;
163
  /* Symbol is defined by a shared object.  */
164
  unsigned int def_dynamic : 1;
165 225 jeremybenn
  /* Symbol has a non-weak reference from a non-shared object (other than
166
     the object in which it is defined).  */
167 24 jeremybenn
  unsigned int ref_regular_nonweak : 1;
168
  /* Dynamic symbol has been adjustd.  */
169
  unsigned int dynamic_adjusted : 1;
170
  /* Symbol needs a copy reloc.  */
171
  unsigned int needs_copy : 1;
172
  /* Symbol needs a procedure linkage table entry.  */
173
  unsigned int needs_plt : 1;
174
  /* Symbol appears in a non-ELF input file.  */
175
  unsigned int non_elf : 1;
176
  /* Symbol should be marked as hidden in the version information.  */
177
  unsigned int hidden : 1;
178
  /* Symbol was forced to local scope due to a version script file.  */
179
  unsigned int forced_local : 1;
180
  /* Symbol was forced to be dynamic due to a version script file.  */
181
  unsigned int dynamic : 1;
182
  /* Symbol was marked during garbage collection.  */
183
  unsigned int mark : 1;
184
  /* Symbol is referenced by a non-GOT/non-PLT relocation.  This is
185
     not currently set by all the backends.  */
186
  unsigned int non_got_ref : 1;
187
  /* Symbol has a definition in a shared object.
188
     FIXME: There is no real need for this field if def_dynamic is never
189
     cleared and all places that test def_dynamic also test def_regular.  */
190
  unsigned int dynamic_def : 1;
191
  /* Symbol is weak in all shared objects.  */
192
  unsigned int dynamic_weak : 1;
193
  /* Symbol is referenced with a relocation where C/C++ pointer equality
194
     matters.  */
195
  unsigned int pointer_equality_needed : 1;
196 225 jeremybenn
  /* Symbol is a unique global symbol.  */
197
  unsigned int unique_global : 1;
198 24 jeremybenn
 
199
  /* String table index in .dynstr if this is a dynamic symbol.  */
200
  unsigned long dynstr_index;
201
 
202
  union
203
  {
204
    /* If this is a weak defined symbol from a dynamic object, this
205
       field points to a defined symbol with the same value, if there is
206
       one.  Otherwise it is NULL.  */
207
    struct elf_link_hash_entry *weakdef;
208
 
209
    /* Hash value of the name computed using the ELF hash function.
210
       Used part way through size_dynamic_sections, after we've finished
211
       with weakdefs.  */
212
    unsigned long elf_hash_value;
213
  } u;
214
 
215
  /* Version information.  */
216
  union
217
  {
218
    /* This field is used for a symbol which is not defined in a
219
       regular object.  It points to the version information read in
220
       from the dynamic object.  */
221
    Elf_Internal_Verdef *verdef;
222
    /* This field is used for a symbol which is defined in a regular
223
       object.  It is set up in size_dynamic_sections.  It points to
224
       the version information we should write out for this symbol.  */
225
    struct bfd_elf_version_tree *vertree;
226
  } verinfo;
227
 
228 225 jeremybenn
  struct elf_link_virtual_table_entry *vtable;
229 24 jeremybenn
};
230
 
231
/* Will references to this symbol always reference the symbol
232
   in this object?  STV_PROTECTED is excluded from the visibility test
233
   here so that function pointer comparisons work properly.  Since
234
   function symbols not defined in an app are set to their .plt entry,
235
   it's necessary for shared libs to also reference the .plt even
236
   though the symbol is really local to the shared lib.  */
237
#define SYMBOL_REFERENCES_LOCAL(INFO, H) \
238
  _bfd_elf_symbol_refs_local_p (H, INFO, 0)
239
 
240
/* Will _calls_ to this symbol always call the version in this object?  */
241
#define SYMBOL_CALLS_LOCAL(INFO, H) \
242
  _bfd_elf_symbol_refs_local_p (H, INFO, 1)
243
 
244
/* Common symbols that are turned into definitions don't have the
245
   DEF_REGULAR flag set, so they might appear to be undefined.  */
246
#define ELF_COMMON_DEF_P(H) \
247
  (!(H)->def_regular                                                    \
248
   && !(H)->def_dynamic                                                 \
249
   && (H)->root.type == bfd_link_hash_defined)
250
 
251
/* Records local symbols to be emitted in the dynamic symbol table.  */
252
 
253
struct elf_link_local_dynamic_entry
254
{
255
  struct elf_link_local_dynamic_entry *next;
256
 
257
  /* The input bfd this symbol came from.  */
258
  bfd *input_bfd;
259
 
260
  /* The index of the local symbol being copied.  */
261
  long input_indx;
262
 
263
  /* The index in the outgoing dynamic symbol table.  */
264
  long dynindx;
265
 
266
  /* A copy of the input symbol.  */
267
  Elf_Internal_Sym isym;
268
};
269
 
270
struct elf_link_loaded_list
271
{
272
  struct elf_link_loaded_list *next;
273
  bfd *abfd;
274
};
275
 
276
/* Structures used by the eh_frame optimization code.  */
277
struct eh_cie_fde
278
{
279
  union {
280
    struct {
281
      /* If REMOVED == 1, this is the CIE that the FDE originally used.
282
         The CIE belongs to the same .eh_frame input section as the FDE.
283
 
284
         If REMOVED == 0, this is the CIE that we have chosen to use for
285
         the output FDE.  The CIE's REMOVED field is also 0, but the CIE
286
         might belong to a different .eh_frame input section from the FDE.  */
287
      struct eh_cie_fde *cie_inf;
288
      struct eh_cie_fde *next_for_section;
289
    } fde;
290
    struct {
291
      /* CIEs have three states:
292
 
293
         - REMOVED && !MERGED: Slated for removal because we haven't yet
294
           proven that an FDE needs it.  FULL_CIE, if nonnull, points to
295
           more detailed information about the CIE.
296
 
297
         - REMOVED && MERGED: We have merged this CIE with MERGED_WITH,
298
           which may not belong to the same input section.
299
 
300
         - !REMOVED: We have decided to keep this CIE.  SEC is the
301
           .eh_frame input section that contains the CIE.  */
302
      union {
303
        struct cie *full_cie;
304
        struct eh_cie_fde *merged_with;
305
        asection *sec;
306
      } u;
307
 
308
      /* True if we have marked relocations associated with this CIE.  */
309
      unsigned int gc_mark : 1;
310
 
311
      /* True if we have decided to turn an absolute LSDA encoding into
312
         a PC-relative one.  */
313
      unsigned int make_lsda_relative : 1;
314
 
315
      /* True if the CIE contains personality data and if that data
316
         uses a PC-relative encoding.  */
317
      unsigned int per_encoding_relative : 1;
318
 
319
      /* True if we need to add an 'R' (FDE encoding) entry to the
320
         CIE's augmentation data.  */
321
      unsigned int add_fde_encoding : 1;
322
 
323
      /* True if we have merged this CIE with another.  */
324
      unsigned int merged : 1;
325
    } cie;
326
  } u;
327
  unsigned int reloc_index;
328
  unsigned int size;
329
  unsigned int offset;
330
  unsigned int new_offset;
331
  unsigned int fde_encoding : 8;
332
  unsigned int lsda_encoding : 8;
333
  unsigned int lsda_offset : 8;
334
 
335
  /* True if this entry represents a CIE, false if it represents an FDE.  */
336
  unsigned int cie : 1;
337
 
338
  /* True if this entry is currently marked for removal.  */
339
  unsigned int removed : 1;
340
 
341
  /* True if we need to add a 'z' (augmentation size) entry to the CIE's
342
     augmentation data, and an associated byte to each of the CIE's FDEs.  */
343
  unsigned int add_augmentation_size : 1;
344
 
345
  /* True if we have decided to convert absolute FDE relocations into
346
     relative ones.  This applies to the first relocation in the FDE,
347
     which is against the code that the FDE describes.  */
348
  unsigned int make_relative : 1;
349
 
350
  /* Unused bits.  */
351
  unsigned int pad1 : 4;
352
 
353
  unsigned int *set_loc;
354
};
355
 
356
struct eh_frame_sec_info
357
{
358
  unsigned int count;
359
  struct cie *cies;
360
  struct eh_cie_fde entry[1];
361
};
362
 
363
struct eh_frame_array_ent
364
{
365
  bfd_vma initial_loc;
366
  bfd_vma fde;
367
};
368
 
369
struct htab;
370
 
371
struct eh_frame_hdr_info
372
{
373
  struct htab *cies;
374
  asection *hdr_sec;
375
  unsigned int fde_count, array_count;
376
  struct eh_frame_array_ent *array;
377
  /* TRUE if we should try to merge CIEs between input sections.  */
378
  bfd_boolean merge_cies;
379
  /* TRUE if all .eh_frames have been parsd.  */
380
  bfd_boolean parsed_eh_frames;
381
  /* TRUE if .eh_frame_hdr should contain the sorted search table.
382
     We build it if we successfully read all .eh_frame input sections
383
     and recognize them.  */
384
  bfd_boolean table;
385
};
386
 
387
/* ELF linker hash table.  */
388
 
389
struct elf_link_hash_table
390
{
391
  struct bfd_link_hash_table root;
392
 
393
  /* Whether we have created the special dynamic sections required
394
     when linking against or generating a shared object.  */
395
  bfd_boolean dynamic_sections_created;
396
 
397
  /* True if this target has relocatable executables, so needs dynamic
398
     section symbols.  */
399
  bfd_boolean is_relocatable_executable;
400
 
401
  /* The BFD used to hold special sections created by the linker.
402
     This will be the first BFD found which requires these sections to
403
     be created.  */
404
  bfd *dynobj;
405
 
406
  /* The value to use when initialising got.refcount/offset and
407
     plt.refcount/offset in an elf_link_hash_entry.  Set to zero when
408
     the values are refcounts.  Set to init_got_offset/init_plt_offset
409
     in size_dynamic_sections when the values may be offsets.  */
410
  union gotplt_union init_got_refcount;
411
  union gotplt_union init_plt_refcount;
412
 
413
  /* The value to use for got.refcount/offset and plt.refcount/offset
414
     when the values may be offsets.  Normally (bfd_vma) -1.  */
415
  union gotplt_union init_got_offset;
416
  union gotplt_union init_plt_offset;
417
 
418
  /* The number of symbols found in the link which must be put into
419
     the .dynsym section.  */
420
  bfd_size_type dynsymcount;
421
 
422
  /* The string table of dynamic symbols, which becomes the .dynstr
423
     section.  */
424
  struct elf_strtab_hash *dynstr;
425
 
426
  /* The number of buckets in the hash table in the .hash section.
427
     This is based on the number of dynamic symbols.  */
428
  bfd_size_type bucketcount;
429
 
430
  /* A linked list of DT_NEEDED names found in dynamic objects
431
     included in the link.  */
432
  struct bfd_link_needed_list *needed;
433
 
434
  /* Sections in the output bfd that provides a section symbol
435
     to be used by relocations emitted against local symbols.
436
     Most targets will not use data_index_section.  */
437
  asection *text_index_section;
438
  asection *data_index_section;
439
 
440
  /* The _GLOBAL_OFFSET_TABLE_ symbol.  */
441
  struct elf_link_hash_entry *hgot;
442
 
443
  /* The _PROCEDURE_LINKAGE_TABLE_ symbol.  */
444
  struct elf_link_hash_entry *hplt;
445
 
446
  /* A pointer to information used to merge SEC_MERGE sections.  */
447
  void *merge_info;
448
 
449
  /* Used to link stabs in sections.  */
450
  struct stab_info stab_info;
451
 
452
  /* Used by eh_frame code when editing .eh_frame.  */
453
  struct eh_frame_hdr_info eh_info;
454
 
455
  /* A linked list of local symbols to be added to .dynsym.  */
456
  struct elf_link_local_dynamic_entry *dynlocal;
457
 
458
  /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
459
     objects included in the link.  */
460
  struct bfd_link_needed_list *runpath;
461
 
462
  /* Cached first output tls section and size of PT_TLS segment.  */
463
  asection *tls_sec;
464
  bfd_size_type tls_size;
465
 
466
  /* A linked list of BFD's loaded in the link.  */
467
  struct elf_link_loaded_list *loaded;
468 225 jeremybenn
 
469
  /* Short-cuts to get to dynamic linker sections.  */
470
  asection *sgot;
471
  asection *sgotplt;
472
  asection *srelgot;
473
  asection *splt;
474
  asection *srelplt;
475
  asection *igotplt;
476
  asection *iplt;
477
  asection *irelplt;
478
  asection *irelifunc;
479 24 jeremybenn
};
480
 
481
/* Look up an entry in an ELF linker hash table.  */
482
 
483
#define elf_link_hash_lookup(table, string, create, copy, follow)       \
484
  ((struct elf_link_hash_entry *)                                       \
485
   bfd_link_hash_lookup (&(table)->root, (string), (create),            \
486
                         (copy), (follow)))
487
 
488
/* Traverse an ELF linker hash table.  */
489
 
490
#define elf_link_hash_traverse(table, func, info)                       \
491
  (bfd_link_hash_traverse                                               \
492
   (&(table)->root,                                                     \
493
    (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func),    \
494
    (info)))
495
 
496
/* Get the ELF linker hash table from a link_info structure.  */
497
 
498
#define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
499
 
500
/* Returns TRUE if the hash table is a struct elf_link_hash_table.  */
501
#define is_elf_hash_table(htab)                                         \
502
  (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
503
 
504 225 jeremybenn
/* Used by bfd_sym_from_r_symndx to cache a small number of local
505
   symbols.  */
506 24 jeremybenn
#define LOCAL_SYM_CACHE_SIZE 32
507 225 jeremybenn
struct sym_cache
508 24 jeremybenn
{
509
  bfd *abfd;
510
  unsigned long indx[LOCAL_SYM_CACHE_SIZE];
511 225 jeremybenn
  Elf_Internal_Sym sym[LOCAL_SYM_CACHE_SIZE];
512 24 jeremybenn
};
513
 
514
/* Constant information held for an ELF backend.  */
515
 
516
struct elf_size_info {
517
  unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr;
518
  unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note;
519
 
520
  /* The size of entries in the .hash section.  */
521
  unsigned char sizeof_hash_entry;
522
 
523
  /* The number of internal relocations to allocate per external
524
     relocation entry.  */
525
  unsigned char int_rels_per_ext_rel;
526
  /* We use some fixed size arrays.  This should be large enough to
527
     handle all back-ends.  */
528
#define MAX_INT_RELS_PER_EXT_REL 3
529
 
530
  unsigned char arch_size, log_file_align;
531
  unsigned char elfclass, ev_current;
532
  int (*write_out_phdrs)
533
    (bfd *, const Elf_Internal_Phdr *, unsigned int);
534
  bfd_boolean
535
    (*write_shdrs_and_ehdr) (bfd *);
536
  bfd_boolean (*checksum_contents)
537
    (bfd * , void (*) (const void *, size_t, void *), void *);
538
  void (*write_relocs)
539
    (bfd *, asection *, void *);
540
  bfd_boolean (*swap_symbol_in)
541
    (bfd *, const void *, const void *, Elf_Internal_Sym *);
542
  void (*swap_symbol_out)
543
    (bfd *, const Elf_Internal_Sym *, void *, void *);
544
  bfd_boolean (*slurp_reloc_table)
545
    (bfd *, asection *, asymbol **, bfd_boolean);
546
  long (*slurp_symbol_table)
547
    (bfd *, asymbol **, bfd_boolean);
548
  void (*swap_dyn_in)
549
    (bfd *, const void *, Elf_Internal_Dyn *);
550
  void (*swap_dyn_out)
551
    (bfd *, const Elf_Internal_Dyn *, void *);
552
 
553
  /* This function is called to swap in a REL relocation.  If an
554
     external relocation corresponds to more than one internal
555
     relocation, then all relocations are swapped in at once.  */
556
  void (*swap_reloc_in)
557
    (bfd *, const bfd_byte *, Elf_Internal_Rela *);
558
 
559
  /* This function is called to swap out a REL relocation.  */
560
  void (*swap_reloc_out)
561
    (bfd *, const Elf_Internal_Rela *, bfd_byte *);
562
 
563
  /* This function is called to swap in a RELA relocation.  If an
564
     external relocation corresponds to more than one internal
565
     relocation, then all relocations are swapped in at once.  */
566
  void (*swap_reloca_in)
567
    (bfd *, const bfd_byte *, Elf_Internal_Rela *);
568
 
569
  /* This function is called to swap out a RELA relocation.  */
570
  void (*swap_reloca_out)
571
    (bfd *, const Elf_Internal_Rela *, bfd_byte *);
572
};
573
 
574
#define elf_symbol_from(ABFD,S) \
575
        (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
576
          && (S)->the_bfd->tdata.elf_obj_data != 0) \
577
         ? (elf_symbol_type *) (S) \
578
         : 0)
579
 
580
enum elf_reloc_type_class {
581
  reloc_class_normal,
582
  reloc_class_relative,
583
  reloc_class_plt,
584
  reloc_class_copy
585
};
586
 
587
struct elf_reloc_cookie
588
{
589
  Elf_Internal_Rela *rels, *rel, *relend;
590
  Elf_Internal_Sym *locsyms;
591
  bfd *abfd;
592
  size_t locsymcount;
593
  size_t extsymoff;
594
  struct elf_link_hash_entry **sym_hashes;
595
  int r_sym_shift;
596
  bfd_boolean bad_symtab;
597
};
598
 
599
/* The level of IRIX compatibility we're striving for.  */
600
 
601
typedef enum {
602
  ict_none,
603
  ict_irix5,
604
  ict_irix6
605
} irix_compat_t;
606
 
607
/* Mapping of ELF section names and types.  */
608
struct bfd_elf_special_section
609
{
610
  const char *prefix;
611
  int prefix_length;
612
  /* 0 means name must match PREFIX exactly.
613
     -1 means name must start with PREFIX followed by an arbitrary string.
614
     -2 means name must match PREFIX exactly or consist of PREFIX followed
615
     by a dot then anything.
616
     > 0 means name must start with the first PREFIX_LENGTH chars of
617
     PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX.  */
618
  int suffix_length;
619
  int type;
620 225 jeremybenn
  bfd_vma attr;
621 24 jeremybenn
};
622
 
623
enum action_discarded
624
  {
625
    COMPLAIN = 1,
626
    PRETEND = 2
627
  };
628
 
629
typedef asection * (*elf_gc_mark_hook_fn)
630
  (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
631
   struct elf_link_hash_entry *, Elf_Internal_Sym *);
632
 
633
struct elf_backend_data
634
{
635
  /* The architecture for this backend.  */
636
  enum bfd_architecture arch;
637
 
638
  /* The ELF machine code (EM_xxxx) for this backend.  */
639
  int elf_machine_code;
640
 
641
  /* EI_OSABI. */
642
  int elf_osabi;
643
 
644
  /* The maximum page size for this backend.  */
645
  bfd_vma maxpagesize;
646
 
647
  /* The minimum page size for this backend.  An input object will not be
648
     considered page aligned unless its sections are correctly aligned for
649
     pages at least this large.  May be smaller than maxpagesize.  */
650
  bfd_vma minpagesize;
651
 
652
  /* The common page size for this backend.  */
653
  bfd_vma commonpagesize;
654
 
655
  /* The BFD flags applied to sections created for dynamic linking.  */
656
  flagword dynamic_sec_flags;
657
 
658
  /* A function to translate an ELF RELA relocation to a BFD arelent
659
     structure.  */
660
  void (*elf_info_to_howto)
661
    (bfd *, arelent *, Elf_Internal_Rela *);
662
 
663
  /* A function to translate an ELF REL relocation to a BFD arelent
664
     structure.  */
665
  void (*elf_info_to_howto_rel)
666
    (bfd *, arelent *, Elf_Internal_Rela *);
667
 
668
  /* A function to determine whether a symbol is global when
669
     partitioning the symbol table into local and global symbols.
670
     This should be NULL for most targets, in which case the correct
671
     thing will be done.  MIPS ELF, at least on the Irix 5, has
672
     special requirements.  */
673
  bfd_boolean (*elf_backend_sym_is_global)
674
    (bfd *, asymbol *);
675
 
676
  /* The remaining functions are hooks which are called only if they
677
     are not NULL.  */
678
 
679
  /* A function to permit a backend specific check on whether a
680
     particular BFD format is relevant for an object file, and to
681
     permit the backend to set any global information it wishes.  When
682
     this is called elf_elfheader is set, but anything else should be
683
     used with caution.  If this returns FALSE, the check_format
684
     routine will return a bfd_error_wrong_format error.  */
685
  bfd_boolean (*elf_backend_object_p)
686
    (bfd *);
687
 
688
  /* A function to do additional symbol processing when reading the
689
     ELF symbol table.  This is where any processor-specific special
690
     section indices are handled.  */
691
  void (*elf_backend_symbol_processing)
692
    (bfd *, asymbol *);
693
 
694
  /* A function to do additional symbol processing after reading the
695
     entire ELF symbol table.  */
696
  bfd_boolean (*elf_backend_symbol_table_processing)
697
    (bfd *, elf_symbol_type *, unsigned int);
698
 
699
  /* A function to set the type of the info field.  Processor-specific
700
     types should be handled here.  */
701
  int (*elf_backend_get_symbol_type)
702
    (Elf_Internal_Sym *, int);
703
 
704
  /* A function to return the linker hash table entry of a symbol that
705
     might be satisfied by an archive symbol.  */
706
  struct elf_link_hash_entry * (*elf_backend_archive_symbol_lookup)
707
    (bfd *, struct bfd_link_info *, const char *);
708
 
709
  /* Return true if local section symbols should have a non-null st_name.
710
     NULL implies false.  */
711
  bfd_boolean (*elf_backend_name_local_section_symbols)
712
    (bfd *);
713
 
714
  /* A function to do additional processing on the ELF section header
715
     just before writing it out.  This is used to set the flags and
716
     type fields for some sections, or to actually write out data for
717
     unusual sections.  */
718
  bfd_boolean (*elf_backend_section_processing)
719
    (bfd *, Elf_Internal_Shdr *);
720
 
721
  /* A function to handle unusual section types when creating BFD
722
     sections from ELF sections.  */
723
  bfd_boolean (*elf_backend_section_from_shdr)
724
    (bfd *, Elf_Internal_Shdr *, const char *, int);
725
 
726
  /* A function to convert machine dependent ELF section header flags to
727
     BFD internal section header flags.  */
728
  bfd_boolean (*elf_backend_section_flags)
729
    (flagword *, const Elf_Internal_Shdr *);
730
 
731
  /* A function that returns a struct containing ELF section flags and
732
     type for the given BFD section.   */
733
  const struct bfd_elf_special_section * (*get_sec_type_attr)
734
    (bfd *, asection *);
735
 
736
  /* A function to handle unusual program segment types when creating BFD
737
     sections from ELF program segments.  */
738
  bfd_boolean (*elf_backend_section_from_phdr)
739
    (bfd *, Elf_Internal_Phdr *, int, const char *);
740
 
741
  /* A function to set up the ELF section header for a BFD section in
742
     preparation for writing it out.  This is where the flags and type
743
     fields are set for unusual sections.  */
744
  bfd_boolean (*elf_backend_fake_sections)
745
    (bfd *, Elf_Internal_Shdr *, asection *);
746
 
747
  /* A function to get the ELF section index for a BFD section.  If
748
     this returns TRUE, the section was found.  If it is a normal ELF
749
     section, *RETVAL should be left unchanged.  If it is not a normal
750
     ELF section *RETVAL should be set to the SHN_xxxx index.  */
751
  bfd_boolean (*elf_backend_section_from_bfd_section)
752
    (bfd *, asection *, int *retval);
753
 
754
  /* If this field is not NULL, it is called by the add_symbols phase
755
     of a link just before adding a symbol to the global linker hash
756
     table.  It may modify any of the fields as it wishes.  If *NAME
757
     is set to NULL, the symbol will be skipped rather than being
758
     added to the hash table.  This function is responsible for
759
     handling all processor dependent symbol bindings and section
760
     indices, and must set at least *FLAGS and *SEC for each processor
761
     dependent case; failure to do so will cause a link error.  */
762
  bfd_boolean (*elf_add_symbol_hook)
763
    (bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *,
764
     const char **name, flagword *flags, asection **sec, bfd_vma *value);
765
 
766
  /* If this field is not NULL, it is called by the elf_link_output_sym
767 225 jeremybenn
     phase of a link for each symbol which will appear in the object file.
768
     On error, this function returns 0.  1 is returned when the symbol
769
     should be output, 2 is returned when the symbol should be discarded.  */
770
  int (*elf_backend_link_output_symbol_hook)
771 24 jeremybenn
    (struct bfd_link_info *info, const char *, Elf_Internal_Sym *,
772
     asection *, struct elf_link_hash_entry *);
773
 
774
  /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
775
     linker the first time it encounters a dynamic object in the link.
776
     This function must create any sections required for dynamic
777
     linking.  The ABFD argument is a dynamic object.  The .interp,
778
     .dynamic, .dynsym, .dynstr, and .hash functions have already been
779
     created, and this function may modify the section flags if
780
     desired.  This function will normally create the .got and .plt
781
     sections, but different backends have different requirements.  */
782
  bfd_boolean (*elf_backend_create_dynamic_sections)
783
    (bfd *abfd, struct bfd_link_info *info);
784
 
785
  /* When creating a shared library, determine whether to omit the
786
     dynamic symbol for the section.  */
787
  bfd_boolean (*elf_backend_omit_section_dynsym)
788
    (bfd *output_bfd, struct bfd_link_info *info, asection *osec);
789
 
790
  /* Return TRUE if relocations of targets are compatible to the extent
791
     that CHECK_RELOCS will properly process them.  PR 4424.  */
792
  bfd_boolean (*relocs_compatible) (const bfd_target *, const bfd_target *);
793
 
794
  /* The CHECK_RELOCS function is called by the add_symbols phase of
795
     the ELF backend linker.  It is called once for each section with
796
     relocs of an object file, just after the symbols for the object
797
     file have been added to the global linker hash table.  The
798
     function must look through the relocs and do any special handling
799
     required.  This generally means allocating space in the global
800
     offset table, and perhaps allocating space for a reloc.  The
801
     relocs are always passed as Rela structures; if the section
802
     actually uses Rel structures, the r_addend field will always be
803
     zero.  */
804
  bfd_boolean (*check_relocs)
805
    (bfd *abfd, struct bfd_link_info *info, asection *o,
806
     const Elf_Internal_Rela *relocs);
807
 
808
  /* The CHECK_DIRECTIVES function is called once per input file by
809
     the add_symbols phase of the ELF backend linker.  The function
810
     must inspect the bfd and create any additional symbols according
811
     to any custom directives in the bfd.  */
812
  bfd_boolean (*check_directives)
813
    (bfd *abfd, struct bfd_link_info *info);
814
 
815
  /* The AS_NEEDED_CLEANUP function is called once per --as-needed
816
     input file that was not needed by the add_symbols phase of the
817
     ELF backend linker.  The function must undo any target specific
818
     changes in the symbol hash table.  */
819
  bfd_boolean (*as_needed_cleanup)
820
    (bfd *abfd, struct bfd_link_info *info);
821
 
822
  /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
823
     linker for every symbol which is defined by a dynamic object and
824
     referenced by a regular object.  This is called after all the
825
     input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
826
     function has been called.  The hash table entry should be
827
     bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
828
     defined in a section from a dynamic object.  Dynamic object
829
     sections are not included in the final link, and this function is
830
     responsible for changing the value to something which the rest of
831
     the link can deal with.  This will normally involve adding an
832
     entry to the .plt or .got or some such section, and setting the
833
     symbol to point to that.  */
834
  bfd_boolean (*elf_backend_adjust_dynamic_symbol)
835
    (struct bfd_link_info *info, struct elf_link_hash_entry *h);
836
 
837
  /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
838
     after all the linker input files have been seen but before the
839
     section sizes have been set.  This is called after
840
     ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS.  */
841
  bfd_boolean (*elf_backend_always_size_sections)
842
    (bfd *output_bfd, struct bfd_link_info *info);
843
 
844
  /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
845
     linker after all the linker input files have been seen but before
846
     the sections sizes have been set.  This is called after
847
     ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
848
     It is only called when linking against a dynamic object.  It must
849
     set the sizes of the dynamic sections, and may fill in their
850
     contents as well.  The generic ELF linker can handle the .dynsym,
851
     .dynstr and .hash sections.  This function must handle the
852
     .interp section and any sections created by the
853
     CREATE_DYNAMIC_SECTIONS entry point.  */
854
  bfd_boolean (*elf_backend_size_dynamic_sections)
855
    (bfd *output_bfd, struct bfd_link_info *info);
856
 
857
  /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections
858
     we keep to use as a base for relocs and symbols.  */
859
  void (*elf_backend_init_index_section)
860
    (bfd *output_bfd, struct bfd_link_info *info);
861
 
862
  /* The RELOCATE_SECTION function is called by the ELF backend linker
863
     to handle the relocations for a section.
864
 
865
     The relocs are always passed as Rela structures; if the section
866
     actually uses Rel structures, the r_addend field will always be
867
     zero.
868
 
869
     This function is responsible for adjust the section contents as
870
     necessary, and (if using Rela relocs and generating a
871
     relocatable output file) adjusting the reloc addend as
872
     necessary.
873
 
874
     This function does not have to worry about setting the reloc
875
     address or the reloc symbol index.
876
 
877
     LOCAL_SYMS is a pointer to the swapped in local symbols.
878
 
879
     LOCAL_SECTIONS is an array giving the section in the input file
880
     corresponding to the st_shndx field of each local symbol.
881
 
882
     The global hash table entry for the global symbols can be found
883
     via elf_sym_hashes (input_bfd).
884
 
885
     When generating relocatable output, this function must handle
886
     STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
887
     going to be the section symbol corresponding to the output
888
     section, which means that the addend must be adjusted
889
     accordingly.
890
 
891
     Returns FALSE on error, TRUE on success, 2 if successful and
892
     relocations should be written for this section.  */
893
  int (*elf_backend_relocate_section)
894
    (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd,
895
     asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs,
896
     Elf_Internal_Sym *local_syms, asection **local_sections);
897
 
898
  /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
899
     linker just before it writes a symbol out to the .dynsym section.
900
     The processor backend may make any required adjustment to the
901
     symbol.  It may also take the opportunity to set contents of the
902
     dynamic sections.  Note that FINISH_DYNAMIC_SYMBOL is called on
903
     all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
904
     on those symbols which are defined by a dynamic object.  */
905
  bfd_boolean (*elf_backend_finish_dynamic_symbol)
906
    (bfd *output_bfd, struct bfd_link_info *info,
907
     struct elf_link_hash_entry *h, Elf_Internal_Sym *sym);
908
 
909
  /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
910
     linker just before it writes all the dynamic sections out to the
911
     output file.  The FINISH_DYNAMIC_SYMBOL will have been called on
912
     all dynamic symbols.  */
913
  bfd_boolean (*elf_backend_finish_dynamic_sections)
914
    (bfd *output_bfd, struct bfd_link_info *info);
915
 
916
  /* A function to do any beginning processing needed for the ELF file
917
     before building the ELF headers and computing file positions.  */
918
  void (*elf_backend_begin_write_processing)
919
    (bfd *, struct bfd_link_info *);
920
 
921
  /* A function to do any final processing needed for the ELF file
922
     before writing it out.  The LINKER argument is TRUE if this BFD
923
     was created by the ELF backend linker.  */
924
  void (*elf_backend_final_write_processing)
925
    (bfd *, bfd_boolean linker);
926
 
927
  /* This function is called by get_program_header_size.  It should
928
     return the number of additional program segments which this BFD
929
     will need.  It should return -1 on error.  */
930
  int (*elf_backend_additional_program_headers)
931
    (bfd *, struct bfd_link_info *);
932
 
933
  /* This function is called to modify an existing segment map in a
934
     backend specific fashion.  */
935
  bfd_boolean (*elf_backend_modify_segment_map)
936
    (bfd *, struct bfd_link_info *);
937
 
938
  /* This function is called to modify program headers just before
939
     they are written.  */
940
  bfd_boolean (*elf_backend_modify_program_headers)
941
    (bfd *, struct bfd_link_info *);
942
 
943
  /* This function is called before section garbage collection to
944
     mark entry symbol sections.  */
945
  void (*gc_keep)
946
    (struct bfd_link_info *);
947
 
948
  /* This function is called during section garbage collection to
949
     mark sections that define global symbols.  */
950
  bfd_boolean (*gc_mark_dynamic_ref)
951
    (struct elf_link_hash_entry *, void *);
952
 
953
  /* This function is called during section gc to discover the section a
954
     particular relocation refers to.  */
955
  elf_gc_mark_hook_fn gc_mark_hook;
956
 
957
  /* This function, if defined, is called after the first gc marking pass
958
     to allow the backend to mark additional sections.  */
959
  bfd_boolean (*gc_mark_extra_sections)
960
    (struct bfd_link_info *, elf_gc_mark_hook_fn);
961
 
962
  /* This function, if defined, is called during the sweep phase of gc
963
     in order that a backend might update any data structures it might
964
     be maintaining.  */
965
  bfd_boolean (*gc_sweep_hook)
966
    (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
967
 
968
  /* This function, if defined, is called after the ELF headers have
969
     been created.  This allows for things like the OS and ABI versions
970
     to be changed.  */
971
  void (*elf_backend_post_process_headers)
972
    (bfd *, struct bfd_link_info *);
973
 
974
  /* This function, if defined, prints a symbol to file and returns the
975
     name of the symbol to be printed.  It should return NULL to fall
976
     back to default symbol printing.  */
977
  const char *(*elf_backend_print_symbol_all)
978
    (bfd *, void *, asymbol *);
979
 
980
  /* This function, if defined, is called after all local symbols and
981
     global symbols converted to locals are emitted into the symtab
982
     section.  It allows the backend to emit special local symbols
983
     not handled in the hash table.  */
984
  bfd_boolean (*elf_backend_output_arch_local_syms)
985
    (bfd *, struct bfd_link_info *, void *,
986
     bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *,
987
                      struct elf_link_hash_entry *));
988
 
989
  /* This function, if defined, is called after all symbols are emitted
990
     into the symtab section.  It allows the backend to emit special
991
     global symbols not handled in the hash table.  */
992
  bfd_boolean (*elf_backend_output_arch_syms)
993
    (bfd *, struct bfd_link_info *, void *,
994
     bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *,
995
                      struct elf_link_hash_entry *));
996
 
997
  /* Copy any information related to dynamic linking from a pre-existing
998
     symbol to a newly created symbol.  Also called to copy flags and
999
     other back-end info to a weakdef, in which case the symbol is not
1000
     newly created and plt/got refcounts and dynamic indices should not
1001
     be copied.  */
1002
  void (*elf_backend_copy_indirect_symbol)
1003
    (struct bfd_link_info *, struct elf_link_hash_entry *,
1004
     struct elf_link_hash_entry *);
1005
 
1006
  /* Modify any information related to dynamic linking such that the
1007
     symbol is not exported.  */
1008
  void (*elf_backend_hide_symbol)
1009
    (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean);
1010
 
1011
  /* A function to do additional symbol fixup, called by
1012
     _bfd_elf_fix_symbol_flags.  */
1013
  bfd_boolean (*elf_backend_fixup_symbol)
1014
    (struct bfd_link_info *, struct elf_link_hash_entry *);
1015
 
1016
  /* Merge the backend specific symbol attribute.  */
1017
  void (*elf_backend_merge_symbol_attribute)
1018
    (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean,
1019
     bfd_boolean);
1020
 
1021 225 jeremybenn
  /* This function, if defined, will return a string containing the
1022
     name of a target-specific dynamic tag.  */
1023
  char *(*elf_backend_get_target_dtag)
1024
    (bfd_vma);
1025
 
1026 24 jeremybenn
  /* Decide whether an undefined symbol is special and can be ignored.
1027
     This is the case for OPTIONAL symbols on IRIX.  */
1028
  bfd_boolean (*elf_backend_ignore_undef_symbol)
1029
    (struct elf_link_hash_entry *);
1030
 
1031
  /* Emit relocations.  Overrides default routine for emitting relocs,
1032
     except during a relocatable link, or if all relocs are being emitted.  */
1033
  bfd_boolean (*elf_backend_emit_relocs)
1034
    (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
1035
     struct elf_link_hash_entry **);
1036
 
1037
  /* Count relocations.  Not called for relocatable links
1038
     or if all relocs are being preserved in the output.  */
1039
  unsigned int (*elf_backend_count_relocs)
1040 225 jeremybenn
    (struct bfd_link_info *, asection *);
1041 24 jeremybenn
 
1042
  /* This function, if defined, is called when an NT_PRSTATUS note is found
1043
     in a core file.  */
1044
  bfd_boolean (*elf_backend_grok_prstatus)
1045
    (bfd *, Elf_Internal_Note *);
1046
 
1047
  /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
1048
     note is found in a core file.  */
1049
  bfd_boolean (*elf_backend_grok_psinfo)
1050
    (bfd *, Elf_Internal_Note *);
1051
 
1052
  /* This function, if defined, is called to write a note to a corefile.  */
1053
  char *(*elf_backend_write_core_note)
1054
    (bfd *abfd, char *buf, int *bufsiz, int note_type, ...);
1055
 
1056
  /* This function returns class of a reloc type.  */
1057
  enum elf_reloc_type_class (*elf_backend_reloc_type_class)
1058
    (const Elf_Internal_Rela *);
1059
 
1060
  /* This function, if defined, removes information about discarded functions
1061
     from other sections which mention them.  */
1062
  bfd_boolean (*elf_backend_discard_info)
1063
    (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *);
1064
 
1065
  /* This function, if defined, signals that the function above has removed
1066
     the discarded relocations for this section.  */
1067
  bfd_boolean (*elf_backend_ignore_discarded_relocs)
1068
    (asection *);
1069
 
1070
  /* What to do when ld finds relocations against symbols defined in
1071
     discarded sections.  */
1072
  unsigned int (*action_discarded)
1073
    (asection *);
1074
 
1075
  /* This function returns the width of FDE pointers in bytes, or 0 if
1076
     that can't be determined for some reason.  The default definition
1077
     goes by the bfd's EI_CLASS.  */
1078
  unsigned int (*elf_backend_eh_frame_address_size)
1079
    (bfd *, asection *);
1080
 
1081
  /* These functions tell elf-eh-frame whether to attempt to turn
1082
     absolute or lsda encodings into pc-relative ones.  The default
1083
     definition enables these transformations.  */
1084
  bfd_boolean (*elf_backend_can_make_relative_eh_frame)
1085
     (bfd *, struct bfd_link_info *, asection *);
1086
  bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame)
1087
     (bfd *, struct bfd_link_info *, asection *);
1088
 
1089
  /* This function returns an encoding after computing the encoded
1090
     value (and storing it in ENCODED) for the given OFFSET into OSEC,
1091
     to be stored in at LOC_OFFSET into the LOC_SEC input section.
1092
     The default definition chooses a 32-bit PC-relative encoding.  */
1093
  bfd_byte (*elf_backend_encode_eh_address)
1094
     (bfd *abfd, struct bfd_link_info *info,
1095
      asection *osec, bfd_vma offset,
1096
      asection *loc_sec, bfd_vma loc_offset,
1097
      bfd_vma *encoded);
1098
 
1099
  /* This function, if defined, may write out the given section.
1100
     Returns TRUE if it did so and FALSE if the caller should.  */
1101
  bfd_boolean (*elf_backend_write_section)
1102
    (bfd *, struct bfd_link_info *, asection *, bfd_byte *);
1103
 
1104
  /* The level of IRIX compatibility we're striving for.
1105
     MIPS ELF specific function.  */
1106
  irix_compat_t (*elf_backend_mips_irix_compat)
1107
    (bfd *);
1108
 
1109
  reloc_howto_type *(*elf_backend_mips_rtype_to_howto)
1110
    (unsigned int, bfd_boolean);
1111
 
1112
  /* The swapping table to use when dealing with ECOFF information.
1113
     Used for the MIPS ELF .mdebug section.  */
1114
  const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
1115
 
1116
  /* This function implements `bfd_elf_bfd_from_remote_memory';
1117
     see elf.c, elfcode.h.  */
1118
  bfd *(*elf_backend_bfd_from_remote_memory)
1119
     (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
1120
      int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, int len));
1121
 
1122
  /* This function is used by `_bfd_elf_get_synthetic_symtab';
1123
     see elf.c.  */
1124
  bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *);
1125
 
1126
  /* Is symbol defined in common section?  */
1127
  bfd_boolean (*common_definition) (Elf_Internal_Sym *);
1128
 
1129
  /* Return a common section index for section.  */
1130
  unsigned int (*common_section_index) (asection *);
1131
 
1132
  /* Return a common section for section.  */
1133
  asection *(*common_section) (asection *);
1134
 
1135
  /* Return TRUE if we can merge 2 definitions.  */
1136
  bfd_boolean (*merge_symbol) (struct bfd_link_info *,
1137
                               struct elf_link_hash_entry **,
1138
                               struct elf_link_hash_entry *,
1139
                               Elf_Internal_Sym *, asection **,
1140
                               bfd_vma *, unsigned int *,
1141
                               bfd_boolean *, bfd_boolean *,
1142
                               bfd_boolean *, bfd_boolean *,
1143
                               bfd_boolean *, bfd_boolean *,
1144
                               bfd_boolean *, bfd_boolean *,
1145
                               bfd *, asection **,
1146
                               bfd_boolean *, bfd_boolean *,
1147
                               bfd_boolean *, bfd_boolean *,
1148
                               bfd *, asection **);
1149
 
1150
  /* Return TRUE if symbol should be hashed in the `.gnu.hash' section.  */
1151
  bfd_boolean (*elf_hash_symbol) (struct elf_link_hash_entry *);
1152
 
1153
  /* Return TRUE if type is a function symbol type.  */
1154
  bfd_boolean (*is_function_type) (unsigned int type);
1155
 
1156
  /* Used to handle bad SHF_LINK_ORDER input.  */
1157
  bfd_error_handler_type link_order_error_handler;
1158
 
1159
  /* Name of the PLT relocation section.  */
1160
  const char *relplt_name;
1161
 
1162
  /* Alternate EM_xxxx machine codes for this backend.  */
1163
  int elf_machine_alt1;
1164
  int elf_machine_alt2;
1165
 
1166
  const struct elf_size_info *s;
1167
 
1168
  /* An array of target specific special sections.  */
1169
  const struct bfd_elf_special_section *special_sections;
1170
 
1171
  /* The size in bytes of the header for the GOT.  This includes the
1172
     so-called reserved entries on some systems.  */
1173
  bfd_vma got_header_size;
1174
 
1175 225 jeremybenn
  /* The size of the GOT entry for the symbol pointed to by H if non-NULL,
1176
     otherwise by the local symbol with index SYMNDX in IBFD.  */
1177
  bfd_vma (*got_elt_size) (bfd *, struct bfd_link_info *,
1178
                           struct elf_link_hash_entry *h,
1179
                           bfd *ibfd, unsigned long symndx);
1180
 
1181 24 jeremybenn
  /* The vendor name to use for a processor-standard attributes section.  */
1182
  const char *obj_attrs_vendor;
1183
 
1184
  /* The section name to use for a processor-standard attributes section.  */
1185
  const char *obj_attrs_section;
1186
 
1187
  /* Return 1, 2 or 3 to indicate what type of arguments a
1188
     processor-specific tag takes.  */
1189
  int (*obj_attrs_arg_type) (int);
1190
 
1191
  /* The section type to use for an attributes section.  */
1192
  unsigned int obj_attrs_section_type;
1193
 
1194 225 jeremybenn
  /* This function determines the order in which any attributes are written.
1195
     It must be defined for input in the range 4..NUM_KNOWN_OBJ_ATTRIBUTES-1
1196
     (this range is used in order to make unity easy).  The returned value is
1197
     the actual tag number to place in the input position.  */
1198
  int (*obj_attrs_order) (int);
1199
 
1200 24 jeremybenn
  /* This is TRUE if the linker should act like collect and gather
1201
     global constructors and destructors by name.  This is TRUE for
1202
     MIPS ELF because the Irix 5 tools can not handle the .init
1203
     section.  */
1204
  unsigned collect : 1;
1205
 
1206
  /* This is TRUE if the linker should ignore changes to the type of a
1207
     symbol.  This is TRUE for MIPS ELF because some Irix 5 objects
1208
     record undefined functions as STT_OBJECT although the definitions
1209
     are STT_FUNC.  */
1210
  unsigned type_change_ok : 1;
1211
 
1212
  /* Whether the backend may use REL relocations.  (Some backends use
1213
     both REL and RELA relocations, and this flag is set for those
1214
     backends.)  */
1215
  unsigned may_use_rel_p : 1;
1216
 
1217
  /* Whether the backend may use RELA relocations.  (Some backends use
1218
     both REL and RELA relocations, and this flag is set for those
1219
     backends.)  */
1220
  unsigned may_use_rela_p : 1;
1221
 
1222
  /* Whether the default relocation type is RELA.  If a backend with
1223
     this flag set wants REL relocations for a particular section,
1224
     it must note that explicitly.  Similarly, if this flag is clear,
1225
     and the backend wants RELA relocations for a particular
1226
     section.  */
1227
  unsigned default_use_rela_p : 1;
1228
 
1229 225 jeremybenn
  /* True if PLT and copy relocations should be RELA by default.  */
1230
  unsigned rela_plts_and_copies_p : 1;
1231
 
1232 24 jeremybenn
  /* Set if RELA relocations for a relocatable link can be handled by
1233
     generic code.  Backends that set this flag need do nothing in the
1234
     backend relocate_section routine for relocatable linking.  */
1235
  unsigned rela_normal : 1;
1236
 
1237
  /* TRUE if addresses "naturally" sign extend.  This is used when
1238
     swapping in from Elf32 when BFD64.  */
1239
  unsigned sign_extend_vma : 1;
1240
 
1241
  unsigned want_got_plt : 1;
1242
  unsigned plt_readonly : 1;
1243
  unsigned want_plt_sym : 1;
1244
  unsigned plt_not_loaded : 1;
1245
  unsigned plt_alignment : 4;
1246
  unsigned can_gc_sections : 1;
1247
  unsigned can_refcount : 1;
1248
  unsigned want_got_sym : 1;
1249
  unsigned want_dynbss : 1;
1250
 
1251
  /* Targets which do not support physical addressing often require
1252
     that the p_paddr field in the section header to be set to zero.
1253
     This field indicates whether this behavior is required.  */
1254
  unsigned want_p_paddr_set_to_zero : 1;
1255
 
1256
  /* True if an object file lacking a .note.GNU-stack section
1257
     should be assumed to be requesting exec stack.  At least one
1258
     other file in the link needs to have a .note.GNU-stack section
1259
     for a PT_GNU_STACK segment to be created.  */
1260
  unsigned default_execstack : 1;
1261
};
1262
 
1263
/* Information stored for each BFD section in an ELF file.  This
1264
   structure is allocated by elf_new_section_hook.  */
1265
 
1266
struct bfd_elf_section_data
1267
{
1268
  /* The ELF header for this section.  */
1269
  Elf_Internal_Shdr this_hdr;
1270
 
1271
  /* The ELF header for the reloc section associated with this
1272
     section, if any.  */
1273
  Elf_Internal_Shdr rel_hdr;
1274
 
1275
  /* If there is a second reloc section associated with this section,
1276
     as can happen on Irix 6, this field points to the header.  */
1277
  Elf_Internal_Shdr *rel_hdr2;
1278
 
1279
  /* The number of relocations currently assigned to REL_HDR.  */
1280
  unsigned int rel_count;
1281
 
1282
  /* The number of relocations currently assigned to REL_HDR2.  */
1283
  unsigned int rel_count2;
1284
 
1285
  /* The ELF section number of this section.  */
1286
  int this_idx;
1287
 
1288
  /* The ELF section number of the reloc section indicated by
1289
     REL_HDR if any.  Only used for an output file.  */
1290
  int rel_idx;
1291
 
1292
  /* The ELF section number of the reloc section indicated by
1293
     REL_HDR2 if any.  Only used for an output file.  */
1294
  int rel_idx2;
1295
 
1296
  /* Used by the backend linker when generating a shared library to
1297
     record the dynamic symbol index for a section symbol
1298
     corresponding to this section.  A value of 0 means that there is
1299
     no dynamic symbol for this section.  */
1300
  int dynindx;
1301
 
1302
  /* A pointer to the linked-to section for SHF_LINK_ORDER.  */
1303
  asection *linked_to;
1304
 
1305
  /* Used by the backend linker to store the symbol hash table entries
1306
     associated with relocs against global symbols.  */
1307
  struct elf_link_hash_entry **rel_hashes;
1308
 
1309
  /* A pointer to the swapped relocs.  If the section uses REL relocs,
1310
     rather than RELA, all the r_addend fields will be zero.  This
1311
     pointer may be NULL.  It is used by the backend linker.  */
1312
  Elf_Internal_Rela *relocs;
1313
 
1314
  /* A pointer to a linked list tracking dynamic relocs copied for
1315
     local symbols.  */
1316
  void *local_dynrel;
1317
 
1318
  /* A pointer to the bfd section used for dynamic relocs.  */
1319
  asection *sreloc;
1320
 
1321
  union {
1322
    /* Group name, if this section is a member of a group.  */
1323
    const char *name;
1324
 
1325
    /* Group signature sym, if this is the SHT_GROUP section.  */
1326
    struct bfd_symbol *id;
1327
  } group;
1328
 
1329
  /* For a member of a group, points to the SHT_GROUP section.
1330
     NULL for the SHT_GROUP section itself and non-group sections.  */
1331
  asection *sec_group;
1332
 
1333
  /* A linked list of member sections in the group.  Circular when used by
1334
     the linker.  For the SHT_GROUP section, points at first member.  */
1335
  asection *next_in_group;
1336
 
1337
  /* The FDEs associated with this section.  The u.fde.next_in_section
1338
     field acts as a chain pointer.  */
1339
  struct eh_cie_fde *fde_list;
1340
 
1341
  /* A pointer used for various section optimizations.  */
1342
  void *sec_info;
1343
};
1344
 
1345
#define elf_section_data(sec)  ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
1346
#define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
1347
#define elf_section_type(sec)  (elf_section_data(sec)->this_hdr.sh_type)
1348
#define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
1349
#define elf_group_name(sec)    (elf_section_data(sec)->group.name)
1350
#define elf_group_id(sec)      (elf_section_data(sec)->group.id)
1351
#define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
1352
#define elf_fde_list(sec)      (elf_section_data(sec)->fde_list)
1353
#define elf_sec_group(sec)      (elf_section_data(sec)->sec_group)
1354
 
1355
#define xvec_get_elf_backend_data(xvec) \
1356
  ((const struct elf_backend_data *) (xvec)->backend_data)
1357
 
1358
#define get_elf_backend_data(abfd) \
1359
   xvec_get_elf_backend_data ((abfd)->xvec)
1360
 
1361 225 jeremybenn
/* The maximum number of known object attributes for any target.  */
1362
#define NUM_KNOWN_OBJ_ATTRIBUTES 71
1363 24 jeremybenn
 
1364 225 jeremybenn
/* The value of an object attribute.  The type indicates whether the attribute
1365
   holds and integer, a string, or both.  It can also indicate that there can
1366
   be no default (i.e. all values must be written to file, even zero).  */
1367 24 jeremybenn
 
1368 225 jeremybenn
typedef struct obj_attribute
1369 24 jeremybenn
{
1370 225 jeremybenn
#define ATTR_TYPE_FLAG_INT_VAL    (1 << 0)
1371
#define ATTR_TYPE_FLAG_STR_VAL    (1 << 1)
1372
#define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
1373 24 jeremybenn
 
1374 225 jeremybenn
#define ATTR_TYPE_HAS_INT_VAL(TYPE)     ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
1375
#define ATTR_TYPE_HAS_STR_VAL(TYPE)     ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
1376
#define ATTR_TYPE_HAS_NO_DEFAULT(TYPE)  ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
1377 24 jeremybenn
 
1378
  int type;
1379
  unsigned int i;
1380
  char *s;
1381
} obj_attribute;
1382
 
1383
typedef struct obj_attribute_list
1384
{
1385
  struct obj_attribute_list *next;
1386
  int tag;
1387
  obj_attribute attr;
1388
} obj_attribute_list;
1389
 
1390
/* Object attributes may either be defined by the processor ABI, index
1391
   OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
1392
   (and possibly also processor-specific), index OBJ_ATTR_GNU.  */
1393
#define OBJ_ATTR_PROC 0
1394
#define OBJ_ATTR_GNU 1
1395
#define OBJ_ATTR_FIRST OBJ_ATTR_PROC
1396
#define OBJ_ATTR_LAST OBJ_ATTR_GNU
1397
 
1398
/* The following object attribute tags are taken as generic, for all
1399
   targets and for "gnu" where there is no target standard.  */
1400
enum
1401
{
1402
  Tag_NULL = 0,
1403
  Tag_File = 1,
1404
  Tag_Section = 2,
1405
  Tag_Symbol = 3,
1406
  Tag_compatibility = 32
1407
};
1408
 
1409
/* Enum used to identify target specific extensions to the elf_obj_tdata
1410
   structure.  Note the enums deliberately start from 1 so that we can
1411
   detect an uninitialized field.  The generic value is last so that
1412
   additions to this enum do not need to modify more than one line.  */
1413
enum elf_object_id
1414
{
1415
  ALPHA_ELF_TDATA = 1,
1416
  ARM_ELF_TDATA,
1417
  HPPA_ELF_TDATA,
1418
  I386_ELF_TDATA,
1419 225 jeremybenn
  MIPS_ELF_TDATA,
1420 24 jeremybenn
  PPC32_ELF_TDATA,
1421
  PPC64_ELF_TDATA,
1422
  S390_ELF_TDATA,
1423
  SH_ELF_TDATA,
1424
  SPARC_ELF_TDATA,
1425
  X86_64_ELF_TDATA,
1426 225 jeremybenn
  XTENSA_ELF_TDATA,
1427 24 jeremybenn
  GENERIC_ELF_TDATA
1428
};
1429
 
1430
/* Some private data is stashed away for future use using the tdata pointer
1431
   in the bfd structure.  */
1432
 
1433
struct elf_obj_tdata
1434
{
1435
  Elf_Internal_Ehdr elf_header[1];      /* Actual data, but ref like ptr */
1436
  Elf_Internal_Shdr **elf_sect_ptr;
1437
  Elf_Internal_Phdr *phdr;
1438
  struct elf_segment_map *segment_map;
1439
  struct elf_strtab_hash *strtab_ptr;
1440
  int num_locals;
1441
  int num_globals;
1442
  unsigned int num_elf_sections;        /* elf_sect_ptr size */
1443
  int num_section_syms;
1444
  asymbol **section_syms;               /* STT_SECTION symbols for each section */
1445
  Elf_Internal_Shdr symtab_hdr;
1446
  Elf_Internal_Shdr shstrtab_hdr;
1447
  Elf_Internal_Shdr strtab_hdr;
1448
  Elf_Internal_Shdr dynsymtab_hdr;
1449
  Elf_Internal_Shdr dynstrtab_hdr;
1450
  Elf_Internal_Shdr dynversym_hdr;
1451
  Elf_Internal_Shdr dynverref_hdr;
1452
  Elf_Internal_Shdr dynverdef_hdr;
1453
  Elf_Internal_Shdr symtab_shndx_hdr;
1454
  unsigned int symtab_section, shstrtab_section;
1455
  unsigned int strtab_section, dynsymtab_section;
1456
  unsigned int symtab_shndx_section;
1457
  unsigned int dynversym_section, dynverdef_section, dynverref_section;
1458
  file_ptr next_file_pos;
1459
  bfd_vma gp;                           /* The gp value */
1460
  unsigned int gp_size;                 /* The gp size */
1461
 
1462
  /* Information grabbed from an elf core file.  */
1463
  int core_signal;
1464
  int core_pid;
1465
  int core_lwpid;
1466
  char* core_program;
1467
  char* core_command;
1468
 
1469
  /* A mapping from external symbols to entries in the linker hash
1470
     table, used when linking.  This is indexed by the symbol index
1471
     minus the sh_info field of the symbol table header.  */
1472
  struct elf_link_hash_entry **sym_hashes;
1473
 
1474
  /* Track usage and final offsets of GOT entries for local symbols.
1475
     This array is indexed by symbol index.  Elements are used
1476
     identically to "got" in struct elf_link_hash_entry.  */
1477
  union
1478
    {
1479
      bfd_signed_vma *refcounts;
1480
      bfd_vma *offsets;
1481
      struct got_entry **ents;
1482
    } local_got;
1483
 
1484
  /* The linker ELF emulation code needs to let the backend ELF linker
1485
     know what filename should be used for a dynamic object if the
1486
     dynamic object is found using a search.  The emulation code then
1487
     sometimes needs to know what name was actually used.  Until the
1488
     file has been added to the linker symbol table, this field holds
1489
     the name the linker wants.  After it has been added, it holds the
1490
     name actually used, which will be the DT_SONAME entry if there is
1491
     one.  */
1492
  const char *dt_name;
1493
 
1494
  /* Records the result of `get_program_header_size'.  */
1495
  bfd_size_type program_header_size;
1496
 
1497
  /* Used by find_nearest_line entry point.  */
1498
  void *line_info;
1499
 
1500
  /* Used by MIPS ELF find_nearest_line entry point.  The structure
1501
     could be included directly in this one, but there's no point to
1502
     wasting the memory just for the infrequently called
1503
     find_nearest_line.  */
1504
  struct mips_elf_find_line *find_line_info;
1505
 
1506
  /* A place to stash dwarf1 info for this bfd.  */
1507
  struct dwarf1_debug *dwarf1_find_line_info;
1508
 
1509
  /* A place to stash dwarf2 info for this bfd.  */
1510
  void *dwarf2_find_line_info;
1511
 
1512
  /* An array of stub sections indexed by symbol number, used by the
1513
     MIPS ELF linker.  FIXME: We should figure out some way to only
1514
     include this field for a MIPS ELF target.  */
1515
  asection **local_stubs;
1516
  asection **local_call_stubs;
1517
 
1518
  /* Used to determine if PT_GNU_EH_FRAME segment header should be
1519
     created.  */
1520
  asection *eh_frame_hdr;
1521
 
1522
  Elf_Internal_Shdr **group_sect_ptr;
1523
  int num_group;
1524
 
1525
  /* Number of symbol version definitions we are about to emit.  */
1526
  unsigned int cverdefs;
1527
 
1528
  /* Number of symbol version references we are about to emit.  */
1529
  unsigned int cverrefs;
1530
 
1531
  /* Segment flags for the PT_GNU_STACK segment.  */
1532
  unsigned int stack_flags;
1533
 
1534
  /* Symbol version definitions in external objects.  */
1535
  Elf_Internal_Verdef *verdef;
1536
 
1537
  /* Symbol version references to external objects.  */
1538
  Elf_Internal_Verneed *verref;
1539
 
1540
  /* The Irix 5 support uses two virtual sections, which represent
1541
     text/data symbols defined in dynamic objects.  */
1542
  asymbol *elf_data_symbol;
1543
  asymbol *elf_text_symbol;
1544
  asection *elf_data_section;
1545
  asection *elf_text_section;
1546
 
1547
  /* A pointer to the .eh_frame section.  */
1548
  asection *eh_frame_section;
1549
 
1550
  /* Whether a dyanmic object was specified normally on the linker
1551
     command line, or was specified when --as-needed was in effect,
1552
     or was found via a DT_NEEDED entry.  */
1553
  enum dynamic_lib_link_class dyn_lib_class;
1554
 
1555
  /* This is set to TRUE if the object was created by the backend
1556
     linker.  */
1557
  bfd_boolean linker;
1558
 
1559
  /* Irix 5 often screws up the symbol table, sorting local symbols
1560
     after global symbols.  This flag is set if the symbol table in
1561
     this BFD appears to be screwed up.  If it is, we ignore the
1562
     sh_info field in the symbol table header, and always read all the
1563
     symbols.  */
1564
  bfd_boolean bad_symtab;
1565
 
1566
  /* Used to determine if the e_flags field has been initialized */
1567
  bfd_boolean flags_init;
1568
 
1569
  /* Symbol buffer.  */
1570
  void *symbuf;
1571
 
1572
  obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES];
1573
  obj_attribute_list *other_obj_attributes[2];
1574
 
1575
  /* Called at the end of _bfd_elf_write_object_contents if not NULL.  */
1576
  bfd_boolean (*after_write_object_contents) (bfd *);
1577
  void *after_write_object_contents_info;
1578
 
1579
  /* NT_GNU_BUILD_ID note type.  */
1580
  bfd_size_type build_id_size;
1581
  bfd_byte *build_id;
1582
 
1583 225 jeremybenn
  /* True if the bfd contains symbols that have the STT_GNU_IFUNC
1584
     symbol type.  Used to set the osabi field in the ELF header
1585
     structure.  */
1586
  bfd_boolean has_ifunc_symbols;
1587
 
1588 24 jeremybenn
  /* An identifier used to distinguish different target
1589
     specific extensions to this structure.  */
1590
  enum elf_object_id object_id;
1591
};
1592
 
1593
#define elf_tdata(bfd)          ((bfd) -> tdata.elf_obj_data)
1594
 
1595
#define elf_object_id(bfd)      (elf_tdata(bfd) -> object_id)
1596
#define elf_program_header_size(bfd) (elf_tdata(bfd) -> program_header_size)
1597
#define elf_elfheader(bfd)      (elf_tdata(bfd) -> elf_header)
1598
#define elf_elfsections(bfd)    (elf_tdata(bfd) -> elf_sect_ptr)
1599
#define elf_numsections(bfd)    (elf_tdata(bfd) -> num_elf_sections)
1600
#define elf_shstrtab(bfd)       (elf_tdata(bfd) -> strtab_ptr)
1601
#define elf_onesymtab(bfd)      (elf_tdata(bfd) -> symtab_section)
1602
#define elf_symtab_shndx(bfd)   (elf_tdata(bfd) -> symtab_shndx_section)
1603
#define elf_symtab_hdr(bfd)     (elf_tdata(bfd) -> symtab_hdr)
1604
#define elf_dynsymtab(bfd)      (elf_tdata(bfd) -> dynsymtab_section)
1605
#define elf_dynversym(bfd)      (elf_tdata(bfd) -> dynversym_section)
1606
#define elf_dynverdef(bfd)      (elf_tdata(bfd) -> dynverdef_section)
1607
#define elf_dynverref(bfd)      (elf_tdata(bfd) -> dynverref_section)
1608
#define elf_eh_frame_section(bfd) \
1609
                                (elf_tdata(bfd) -> eh_frame_section)
1610
#define elf_num_locals(bfd)     (elf_tdata(bfd) -> num_locals)
1611
#define elf_num_globals(bfd)    (elf_tdata(bfd) -> num_globals)
1612
#define elf_section_syms(bfd)   (elf_tdata(bfd) -> section_syms)
1613
#define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms)
1614
#define core_prpsinfo(bfd)      (elf_tdata(bfd) -> prpsinfo)
1615
#define core_prstatus(bfd)      (elf_tdata(bfd) -> prstatus)
1616
#define elf_gp(bfd)             (elf_tdata(bfd) -> gp)
1617
#define elf_gp_size(bfd)        (elf_tdata(bfd) -> gp_size)
1618
#define elf_sym_hashes(bfd)     (elf_tdata(bfd) -> sym_hashes)
1619
#define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
1620
#define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
1621
#define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
1622
#define elf_dt_name(bfd)        (elf_tdata(bfd) -> dt_name)
1623
#define elf_dyn_lib_class(bfd)  (elf_tdata(bfd) -> dyn_lib_class)
1624
#define elf_bad_symtab(bfd)     (elf_tdata(bfd) -> bad_symtab)
1625
#define elf_flags_init(bfd)     (elf_tdata(bfd) -> flags_init)
1626
#define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes)
1627
#define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes)
1628
#define elf_known_obj_attributes_proc(bfd) \
1629
  (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC])
1630
#define elf_other_obj_attributes_proc(bfd) \
1631
  (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
1632
 
1633
extern void _bfd_elf_swap_verdef_in
1634
  (bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *);
1635
extern void _bfd_elf_swap_verdef_out
1636
  (bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *);
1637
extern void _bfd_elf_swap_verdaux_in
1638
  (bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *);
1639
extern void _bfd_elf_swap_verdaux_out
1640
  (bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *);
1641
extern void _bfd_elf_swap_verneed_in
1642
  (bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *);
1643
extern void _bfd_elf_swap_verneed_out
1644
  (bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *);
1645
extern void _bfd_elf_swap_vernaux_in
1646
  (bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *);
1647
extern void _bfd_elf_swap_vernaux_out
1648
  (bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *);
1649
extern void _bfd_elf_swap_versym_in
1650
  (bfd *, const Elf_External_Versym *, Elf_Internal_Versym *);
1651
extern void _bfd_elf_swap_versym_out
1652
  (bfd *, const Elf_Internal_Versym *, Elf_External_Versym *);
1653
 
1654 225 jeremybenn
extern unsigned int _bfd_elf_section_from_bfd_section
1655 24 jeremybenn
  (bfd *, asection *);
1656
extern char *bfd_elf_string_from_elf_section
1657
  (bfd *, unsigned, unsigned);
1658
extern Elf_Internal_Sym *bfd_elf_get_elf_syms
1659
  (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *,
1660
   Elf_External_Sym_Shndx *);
1661
extern const char *bfd_elf_sym_name
1662
  (bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *, asection *);
1663
 
1664
extern bfd_boolean _bfd_elf_copy_private_bfd_data
1665
  (bfd *, bfd *);
1666
extern bfd_boolean _bfd_elf_print_private_bfd_data
1667
  (bfd *, void *);
1668
extern void bfd_elf_print_symbol
1669
  (bfd *, void *, asymbol *, bfd_print_symbol_type);
1670
 
1671
extern unsigned int _bfd_elf_eh_frame_address_size
1672
  (bfd *, asection *);
1673
extern bfd_byte _bfd_elf_encode_eh_address
1674
  (bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset,
1675
   asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded);
1676
extern bfd_boolean _bfd_elf_can_make_relative
1677
  (bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section);
1678
 
1679
extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
1680
  (const Elf_Internal_Rela *);
1681
extern bfd_vma _bfd_elf_rela_local_sym
1682
  (bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *);
1683
extern bfd_vma _bfd_elf_rel_local_sym
1684
  (bfd *, Elf_Internal_Sym *, asection **, bfd_vma);
1685
extern bfd_vma _bfd_elf_section_offset
1686
  (bfd *, struct bfd_link_info *, asection *, bfd_vma);
1687
 
1688
extern unsigned long bfd_elf_hash
1689
  (const char *);
1690
extern unsigned long bfd_elf_gnu_hash
1691
  (const char *);
1692
 
1693
extern bfd_reloc_status_type bfd_elf_generic_reloc
1694
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
1695
extern bfd_boolean bfd_elf_allocate_object
1696
  (bfd *, size_t, enum elf_object_id);
1697
extern bfd_boolean bfd_elf_make_generic_object
1698
  (bfd *);
1699
extern bfd_boolean bfd_elf_mkcorefile
1700
  (bfd *);
1701
extern bfd_boolean _bfd_elf_make_section_from_shdr
1702
  (bfd *, Elf_Internal_Shdr *, const char *, int);
1703
extern bfd_boolean _bfd_elf_make_section_from_phdr
1704
  (bfd *, Elf_Internal_Phdr *, int, const char *);
1705
extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
1706
  (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
1707
extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
1708
  (bfd *);
1709
extern void _bfd_elf_link_hash_copy_indirect
1710
  (struct bfd_link_info *, struct elf_link_hash_entry *,
1711
   struct elf_link_hash_entry *);
1712
extern void _bfd_elf_link_hash_hide_symbol
1713
  (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean);
1714
extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
1715
  (struct bfd_link_info *, struct elf_link_hash_entry *);
1716
extern bfd_boolean _bfd_elf_link_hash_table_init
1717
  (struct elf_link_hash_table *, bfd *,
1718
   struct bfd_hash_entry *(*)
1719
     (struct bfd_hash_entry *, struct bfd_hash_table *, const char *),
1720
   unsigned int);
1721
extern bfd_boolean _bfd_elf_slurp_version_tables
1722
  (bfd *, bfd_boolean);
1723
extern bfd_boolean _bfd_elf_merge_sections
1724
  (bfd *, struct bfd_link_info *);
1725
extern bfd_boolean _bfd_elf_match_sections_by_type
1726
  (bfd *, const asection *, bfd *, const asection *);
1727
extern bfd_boolean bfd_elf_is_group_section
1728
  (bfd *, const struct bfd_section *);
1729
extern void _bfd_elf_section_already_linked
1730
  (bfd *, struct bfd_section *, struct bfd_link_info *);
1731
extern void bfd_elf_set_group_contents
1732
  (bfd *, asection *, void *);
1733
extern asection *_bfd_elf_check_kept_section
1734
  (asection *, struct bfd_link_info *);
1735
extern void _bfd_elf_link_just_syms
1736
  (asection *, struct bfd_link_info *);
1737
extern bfd_boolean _bfd_elf_copy_private_header_data
1738
  (bfd *, bfd *);
1739
extern bfd_boolean _bfd_elf_copy_private_symbol_data
1740
  (bfd *, asymbol *, bfd *, asymbol *);
1741
#define _bfd_generic_init_private_section_data \
1742
  _bfd_elf_init_private_section_data
1743
extern bfd_boolean _bfd_elf_init_private_section_data
1744
  (bfd *, asection *, bfd *, asection *, struct bfd_link_info *);
1745
extern bfd_boolean _bfd_elf_copy_private_section_data
1746
  (bfd *, asection *, bfd *, asection *);
1747
extern bfd_boolean _bfd_elf_write_object_contents
1748
  (bfd *);
1749
extern bfd_boolean _bfd_elf_write_corefile_contents
1750
  (bfd *);
1751
extern bfd_boolean _bfd_elf_set_section_contents
1752
  (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
1753
extern long _bfd_elf_get_symtab_upper_bound
1754
  (bfd *);
1755
extern long _bfd_elf_canonicalize_symtab
1756
  (bfd *, asymbol **);
1757
extern long _bfd_elf_get_dynamic_symtab_upper_bound
1758
  (bfd *);
1759
extern long _bfd_elf_canonicalize_dynamic_symtab
1760
  (bfd *, asymbol **);
1761
extern long _bfd_elf_get_synthetic_symtab
1762
  (bfd *, long, asymbol **, long, asymbol **, asymbol **);
1763
extern long _bfd_elf_get_reloc_upper_bound
1764
  (bfd *, sec_ptr);
1765
extern long _bfd_elf_canonicalize_reloc
1766
  (bfd *, sec_ptr, arelent **, asymbol **);
1767 225 jeremybenn
extern asection * _bfd_elf_get_dynamic_reloc_section
1768
  (bfd *, asection *, bfd_boolean);
1769
extern asection * _bfd_elf_make_dynamic_reloc_section
1770
  (asection *, bfd *, unsigned int, bfd *, bfd_boolean);
1771 24 jeremybenn
extern long _bfd_elf_get_dynamic_reloc_upper_bound
1772
  (bfd *);
1773
extern long _bfd_elf_canonicalize_dynamic_reloc
1774
  (bfd *, arelent **, asymbol **);
1775
extern asymbol *_bfd_elf_make_empty_symbol
1776
  (bfd *);
1777
extern void _bfd_elf_get_symbol_info
1778
  (bfd *, asymbol *, symbol_info *);
1779
extern bfd_boolean _bfd_elf_is_local_label_name
1780
  (bfd *, const char *);
1781
extern alent *_bfd_elf_get_lineno
1782
  (bfd *, asymbol *);
1783
extern bfd_boolean _bfd_elf_set_arch_mach
1784
  (bfd *, enum bfd_architecture, unsigned long);
1785
extern bfd_boolean _bfd_elf_find_nearest_line
1786
  (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
1787
   unsigned int *);
1788
extern bfd_boolean _bfd_elf_find_line
1789
  (bfd *, asymbol **, asymbol *, const char **, unsigned int *);
1790
#define _bfd_generic_find_line _bfd_elf_find_line
1791
extern bfd_boolean _bfd_elf_find_inliner_info
1792
  (bfd *, const char **, const char **, unsigned int *);
1793
#define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
1794
#define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
1795
extern int _bfd_elf_sizeof_headers
1796
  (bfd *, struct bfd_link_info *);
1797
extern bfd_boolean _bfd_elf_new_section_hook
1798
  (bfd *, asection *);
1799
extern bfd_boolean _bfd_elf_init_reloc_shdr
1800
  (bfd *, Elf_Internal_Shdr *, asection *, bfd_boolean);
1801
extern const struct bfd_elf_special_section *_bfd_elf_get_special_section
1802
  (const char *, const struct bfd_elf_special_section *, unsigned int);
1803
extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr
1804
  (bfd *, asection *);
1805
 
1806
/* If the target doesn't have reloc handling written yet:  */
1807
extern void _bfd_elf_no_info_to_howto
1808
  (bfd *, arelent *, Elf_Internal_Rela *);
1809
 
1810
extern bfd_boolean bfd_section_from_shdr
1811
  (bfd *, unsigned int shindex);
1812
extern bfd_boolean bfd_section_from_phdr
1813
  (bfd *, Elf_Internal_Phdr *, int);
1814
 
1815
extern int _bfd_elf_symbol_from_bfd_symbol
1816
  (bfd *, asymbol **);
1817
 
1818 225 jeremybenn
extern Elf_Internal_Sym *bfd_sym_from_r_symndx
1819
  (struct sym_cache *, bfd *, unsigned long);
1820 24 jeremybenn
extern asection *bfd_section_from_elf_index
1821
  (bfd *, unsigned int);
1822
extern struct bfd_strtab_hash *_bfd_elf_stringtab_init
1823
  (void);
1824
 
1825
extern struct elf_strtab_hash * _bfd_elf_strtab_init
1826
  (void);
1827
extern void _bfd_elf_strtab_free
1828
  (struct elf_strtab_hash *);
1829
extern bfd_size_type _bfd_elf_strtab_add
1830
  (struct elf_strtab_hash *, const char *, bfd_boolean);
1831
extern void _bfd_elf_strtab_addref
1832
  (struct elf_strtab_hash *, bfd_size_type);
1833
extern void _bfd_elf_strtab_delref
1834
  (struct elf_strtab_hash *, bfd_size_type);
1835
extern void _bfd_elf_strtab_clear_all_refs
1836
  (struct elf_strtab_hash *);
1837
extern bfd_size_type _bfd_elf_strtab_size
1838
  (struct elf_strtab_hash *);
1839
extern bfd_size_type _bfd_elf_strtab_offset
1840
  (struct elf_strtab_hash *, bfd_size_type);
1841
extern bfd_boolean _bfd_elf_strtab_emit
1842
  (bfd *, struct elf_strtab_hash *);
1843
extern void _bfd_elf_strtab_finalize
1844
  (struct elf_strtab_hash *);
1845
 
1846
extern void _bfd_elf_begin_eh_frame_parsing
1847
  (struct bfd_link_info *info);
1848
extern void _bfd_elf_parse_eh_frame
1849
  (bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *);
1850
extern void _bfd_elf_end_eh_frame_parsing
1851
  (struct bfd_link_info *info);
1852
 
1853
extern bfd_boolean _bfd_elf_discard_section_eh_frame
1854
  (bfd *, struct bfd_link_info *, asection *,
1855
   bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *);
1856
extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
1857
  (bfd *, struct bfd_link_info *);
1858
extern bfd_vma _bfd_elf_eh_frame_section_offset
1859
  (bfd *, struct bfd_link_info *, asection *, bfd_vma);
1860
extern bfd_boolean _bfd_elf_write_section_eh_frame
1861
  (bfd *, struct bfd_link_info *, asection *, bfd_byte *);
1862
extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
1863
  (bfd *, struct bfd_link_info *);
1864
extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
1865
  (struct bfd_link_info *);
1866
 
1867
extern bfd_boolean _bfd_elf_merge_symbol
1868
  (bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *,
1869
   asection **, bfd_vma *, unsigned int *,
1870
   struct elf_link_hash_entry **, bfd_boolean *,
1871
   bfd_boolean *, bfd_boolean *, bfd_boolean *);
1872
 
1873
extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *);
1874
 
1875
extern long _bfd_elf_link_lookup_local_dynindx
1876
  (struct bfd_link_info *, bfd *, long);
1877
extern bfd_boolean _bfd_elf_compute_section_file_positions
1878
  (bfd *, struct bfd_link_info *);
1879
extern void _bfd_elf_assign_file_positions_for_relocs
1880
  (bfd *);
1881
extern file_ptr _bfd_elf_assign_file_position_for_section
1882
  (Elf_Internal_Shdr *, file_ptr, bfd_boolean);
1883
 
1884
extern bfd_boolean _bfd_elf_validate_reloc
1885
  (bfd *, arelent *);
1886
 
1887
extern bfd_boolean _bfd_elf_link_create_dynamic_sections
1888
  (bfd *, struct bfd_link_info *);
1889
extern bfd_boolean _bfd_elf_link_omit_section_dynsym
1890
  (bfd *, struct bfd_link_info *, asection *);
1891
extern bfd_boolean _bfd_elf_create_dynamic_sections
1892
  (bfd *, struct bfd_link_info *);
1893
extern bfd_boolean _bfd_elf_create_got_section
1894
  (bfd *, struct bfd_link_info *);
1895
extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym
1896
  (bfd *, struct bfd_link_info *, asection *, const char *);
1897
extern void _bfd_elf_init_1_index_section
1898
  (bfd *, struct bfd_link_info *);
1899
extern void _bfd_elf_init_2_index_sections
1900
  (bfd *, struct bfd_link_info *);
1901
 
1902
extern bfd_boolean _bfd_elfcore_make_pseudosection
1903
  (bfd *, char *, size_t, ufile_ptr);
1904
extern char *_bfd_elfcore_strndup
1905
  (bfd *, char *, size_t);
1906
 
1907
extern Elf_Internal_Rela *_bfd_elf_link_read_relocs
1908
  (bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean);
1909
 
1910
extern bfd_boolean _bfd_elf_link_output_relocs
1911
  (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
1912
   struct elf_link_hash_entry **);
1913
 
1914
extern bfd_boolean _bfd_elf_adjust_dynamic_copy
1915
  (struct elf_link_hash_entry *, asection *);
1916
 
1917
extern bfd_boolean _bfd_elf_dynamic_symbol_p
1918
  (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
1919
 
1920
extern bfd_boolean _bfd_elf_symbol_refs_local_p
1921
  (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
1922
 
1923
extern bfd_reloc_status_type bfd_elf_perform_complex_relocation
1924
  (bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma);
1925
 
1926
extern bfd_boolean _bfd_elf_setup_sections
1927
  (bfd *);
1928
 
1929
extern void _bfd_elf_set_osabi (bfd * , struct bfd_link_info *);
1930
 
1931
extern const bfd_target *bfd_elf32_object_p
1932
  (bfd *);
1933
extern const bfd_target *bfd_elf32_core_file_p
1934
  (bfd *);
1935
extern char *bfd_elf32_core_file_failing_command
1936
  (bfd *);
1937
extern int bfd_elf32_core_file_failing_signal
1938
  (bfd *);
1939
extern bfd_boolean bfd_elf32_core_file_matches_executable_p
1940
  (bfd *, bfd *);
1941
 
1942
extern bfd_boolean bfd_elf32_swap_symbol_in
1943
  (bfd *, const void *, const void *, Elf_Internal_Sym *);
1944
extern void bfd_elf32_swap_symbol_out
1945
  (bfd *, const Elf_Internal_Sym *, void *, void *);
1946
extern void bfd_elf32_swap_reloc_in
1947
  (bfd *, const bfd_byte *, Elf_Internal_Rela *);
1948
extern void bfd_elf32_swap_reloc_out
1949
  (bfd *, const Elf_Internal_Rela *, bfd_byte *);
1950
extern void bfd_elf32_swap_reloca_in
1951
  (bfd *, const bfd_byte *, Elf_Internal_Rela *);
1952
extern void bfd_elf32_swap_reloca_out
1953
  (bfd *, const Elf_Internal_Rela *, bfd_byte *);
1954
extern void bfd_elf32_swap_phdr_in
1955
  (bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *);
1956
extern void bfd_elf32_swap_phdr_out
1957
  (bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *);
1958
extern void bfd_elf32_swap_dyn_in
1959
  (bfd *, const void *, Elf_Internal_Dyn *);
1960
extern void bfd_elf32_swap_dyn_out
1961
  (bfd *, const Elf_Internal_Dyn *, void *);
1962
extern long bfd_elf32_slurp_symbol_table
1963
  (bfd *, asymbol **, bfd_boolean);
1964
extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
1965
  (bfd *);
1966
extern int bfd_elf32_write_out_phdrs
1967
  (bfd *, const Elf_Internal_Phdr *, unsigned int);
1968
extern bfd_boolean bfd_elf32_checksum_contents
1969
  (bfd * , void (*) (const void *, size_t, void *), void *);
1970
extern void bfd_elf32_write_relocs
1971
  (bfd *, asection *, void *);
1972
extern bfd_boolean bfd_elf32_slurp_reloc_table
1973
  (bfd *, asection *, asymbol **, bfd_boolean);
1974
 
1975
extern const bfd_target *bfd_elf64_object_p
1976
  (bfd *);
1977
extern const bfd_target *bfd_elf64_core_file_p
1978
  (bfd *);
1979
extern char *bfd_elf64_core_file_failing_command
1980
  (bfd *);
1981
extern int bfd_elf64_core_file_failing_signal
1982
  (bfd *);
1983
extern bfd_boolean bfd_elf64_core_file_matches_executable_p
1984
  (bfd *, bfd *);
1985
 
1986
extern bfd_boolean bfd_elf64_swap_symbol_in
1987
  (bfd *, const void *, const void *, Elf_Internal_Sym *);
1988
extern void bfd_elf64_swap_symbol_out
1989
  (bfd *, const Elf_Internal_Sym *, void *, void *);
1990
extern void bfd_elf64_swap_reloc_in
1991
  (bfd *, const bfd_byte *, Elf_Internal_Rela *);
1992
extern void bfd_elf64_swap_reloc_out
1993
  (bfd *, const Elf_Internal_Rela *, bfd_byte *);
1994
extern void bfd_elf64_swap_reloca_in
1995
  (bfd *, const bfd_byte *, Elf_Internal_Rela *);
1996
extern void bfd_elf64_swap_reloca_out
1997
  (bfd *, const Elf_Internal_Rela *, bfd_byte *);
1998
extern void bfd_elf64_swap_phdr_in
1999
  (bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *);
2000
extern void bfd_elf64_swap_phdr_out
2001
  (bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *);
2002
extern void bfd_elf64_swap_dyn_in
2003
  (bfd *, const void *, Elf_Internal_Dyn *);
2004
extern void bfd_elf64_swap_dyn_out
2005
  (bfd *, const Elf_Internal_Dyn *, void *);
2006
extern long bfd_elf64_slurp_symbol_table
2007
  (bfd *, asymbol **, bfd_boolean);
2008
extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
2009
  (bfd *);
2010
extern int bfd_elf64_write_out_phdrs
2011
  (bfd *, const Elf_Internal_Phdr *, unsigned int);
2012
extern bfd_boolean bfd_elf64_checksum_contents
2013
  (bfd * , void (*) (const void *, size_t, void *), void *);
2014
extern void bfd_elf64_write_relocs
2015
  (bfd *, asection *, void *);
2016
extern bfd_boolean bfd_elf64_slurp_reloc_table
2017
  (bfd *, asection *, asymbol **, bfd_boolean);
2018
 
2019
extern bfd_boolean _bfd_elf_default_relocs_compatible
2020
  (const bfd_target *, const bfd_target *);
2021
 
2022
extern bfd_boolean _bfd_elf_relocs_compatible
2023
  (const bfd_target *, const bfd_target *);
2024
 
2025
extern struct elf_link_hash_entry *_bfd_elf_archive_symbol_lookup
2026
  (bfd *, struct bfd_link_info *, const char *);
2027
extern bfd_boolean bfd_elf_link_add_symbols
2028
  (bfd *, struct bfd_link_info *);
2029
extern bfd_boolean _bfd_elf_add_dynamic_entry
2030
  (struct bfd_link_info *, bfd_vma, bfd_vma);
2031
 
2032
extern bfd_boolean bfd_elf_link_record_dynamic_symbol
2033
  (struct bfd_link_info *, struct elf_link_hash_entry *);
2034
 
2035
extern int bfd_elf_link_record_local_dynamic_symbol
2036
  (struct bfd_link_info *, bfd *, long);
2037
 
2038
extern bfd_boolean _bfd_elf_close_and_cleanup
2039
  (bfd *);
2040
 
2041
extern bfd_boolean _bfd_elf_common_definition
2042
  (Elf_Internal_Sym *);
2043
 
2044
extern unsigned int _bfd_elf_common_section_index
2045
  (asection *);
2046
 
2047
extern asection *_bfd_elf_common_section
2048
  (asection *);
2049
 
2050
extern void _bfd_dwarf2_cleanup_debug_info
2051
  (bfd *);
2052
 
2053 225 jeremybenn
extern bfd_vma _bfd_elf_default_got_elt_size
2054
(bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, bfd *,
2055
 unsigned long);
2056
 
2057 24 jeremybenn
extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
2058
  (bfd *, arelent *, struct bfd_symbol *, void *,
2059
   asection *, bfd *, char **);
2060
 
2061
extern bfd_boolean bfd_elf_final_link
2062
  (bfd *, struct bfd_link_info *);
2063
 
2064
extern void _bfd_elf_gc_keep
2065
  (struct bfd_link_info *info);
2066
 
2067
extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
2068
  (struct elf_link_hash_entry *h, void *inf);
2069
 
2070
extern bfd_boolean bfd_elf_gc_sections
2071
  (bfd *, struct bfd_link_info *);
2072
 
2073
extern bfd_boolean bfd_elf_gc_record_vtinherit
2074
  (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma);
2075
 
2076
extern bfd_boolean bfd_elf_gc_record_vtentry
2077
  (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma);
2078
 
2079
extern asection *_bfd_elf_gc_mark_hook
2080
  (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
2081
   struct elf_link_hash_entry *, Elf_Internal_Sym *);
2082
 
2083
extern asection *_bfd_elf_gc_mark_rsec
2084
  (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn,
2085
   struct elf_reloc_cookie *);
2086
 
2087
extern bfd_boolean _bfd_elf_gc_mark_reloc
2088
  (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn,
2089
   struct elf_reloc_cookie *);
2090
 
2091
extern bfd_boolean _bfd_elf_gc_mark_fdes
2092
  (struct bfd_link_info *, asection *, asection *, elf_gc_mark_hook_fn,
2093
   struct elf_reloc_cookie *);
2094
 
2095
extern bfd_boolean _bfd_elf_gc_mark
2096
  (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn);
2097
 
2098
extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
2099
  (bfd *, struct bfd_link_info *);
2100
 
2101
extern bfd_boolean bfd_elf_gc_common_final_link
2102
  (bfd *, struct bfd_link_info *);
2103
 
2104
extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
2105
  (bfd_vma, void *);
2106
 
2107
extern struct elf_segment_map * _bfd_elf_make_dynamic_segment
2108
  (bfd *, asection *);
2109
 
2110
extern bfd_boolean _bfd_elf_map_sections_to_segments
2111
  (bfd *, struct bfd_link_info *);
2112
 
2113
extern bfd_boolean _bfd_elf_is_function_type (unsigned int);
2114
 
2115 225 jeremybenn
extern int bfd_elf_get_default_section_type (flagword);
2116
 
2117 24 jeremybenn
extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section
2118
  (bfd * abfd, asection * section);
2119
 
2120
/* Exported interface for writing elf corefile notes. */
2121
extern char *elfcore_write_note
2122
  (bfd *, char *, int *, const char *, int, const void *, int);
2123
extern char *elfcore_write_prpsinfo
2124
  (bfd *, char *, int *, const char *, const char *);
2125
extern char *elfcore_write_prstatus
2126
  (bfd *, char *, int *, long, int, const void *);
2127
extern char * elfcore_write_pstatus
2128
  (bfd *, char *, int *, long, int, const void *);
2129
extern char *elfcore_write_prfpreg
2130
  (bfd *, char *, int *, const void *, int);
2131
extern char *elfcore_write_prxfpreg
2132
  (bfd *, char *, int *, const void *, int);
2133
extern char *elfcore_write_ppc_vmx
2134
  (bfd *, char *, int *, const void *, int);
2135 225 jeremybenn
extern char *elfcore_write_ppc_vsx
2136
  (bfd *, char *, int *, const void *, int);
2137 24 jeremybenn
extern char *elfcore_write_lwpstatus
2138
  (bfd *, char *, int *, long, int, const void *);
2139 225 jeremybenn
extern char *elfcore_write_register_note
2140
  (bfd *, char *, int *, const char *, const void *, int);
2141 24 jeremybenn
 
2142
extern bfd *_bfd_elf32_bfd_from_remote_memory
2143
  (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
2144
   int (*target_read_memory) (bfd_vma, bfd_byte *, int));
2145
extern bfd *_bfd_elf64_bfd_from_remote_memory
2146
  (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
2147
   int (*target_read_memory) (bfd_vma, bfd_byte *, int));
2148
 
2149
extern bfd_vma bfd_elf_obj_attr_size (bfd *);
2150
extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma);
2151
extern int bfd_elf_get_obj_attr_int (bfd *, int, int);
2152
extern void bfd_elf_add_obj_attr_int (bfd *, int, int, unsigned int);
2153
#define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
2154
  bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2155
extern void bfd_elf_add_obj_attr_string (bfd *, int, int, const char *);
2156
#define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
2157
  bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
2158 225 jeremybenn
extern void bfd_elf_add_obj_attr_int_string (bfd *, int, int, unsigned int,
2159
                                             const char *);
2160
#define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
2161
  bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
2162
                                   (INTVAL), (STRVAL))
2163 24 jeremybenn
 
2164
extern char *_bfd_elf_attr_strdup (bfd *, const char *);
2165
extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *);
2166
extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, int);
2167
extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *);
2168
extern bfd_boolean _bfd_elf_merge_object_attributes (bfd *, bfd *);
2169
 
2170 225 jeremybenn
/* The linker may needs to keep track of the number of relocs that it
2171
   decides to copy as dynamic relocs in check_relocs for each symbol.
2172
   This is so that it can later discard them if they are found to be
2173
   unnecessary.  We can store the information in a field extending the
2174
   regular ELF linker hash table.  */
2175
 
2176
struct elf_dyn_relocs
2177
{
2178
  struct elf_dyn_relocs *next;
2179
 
2180
  /* The input section of the reloc.  */
2181
  asection *sec;
2182
 
2183
  /* Total number of relocs copied for the input section.  */
2184
  bfd_size_type count;
2185
 
2186
  /* Number of pc-relative relocs copied for the input section.  */
2187
  bfd_size_type pc_count;
2188
};
2189
 
2190
extern bfd_boolean _bfd_elf_create_ifunc_sections
2191
  (bfd *, struct bfd_link_info *);
2192
extern asection * _bfd_elf_create_ifunc_dyn_reloc
2193
  (bfd *, struct bfd_link_info *, asection *sec, asection *sreloc,
2194
   struct elf_dyn_relocs **);
2195
extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
2196
  (struct bfd_link_info *, struct elf_link_hash_entry *,
2197
   struct elf_dyn_relocs **, unsigned int, unsigned int);
2198
 
2199 24 jeremybenn
/* Large common section.  */
2200
extern asection _bfd_elf_large_com_section;
2201
 
2202 225 jeremybenn
/* Hash for local symbol with the first section id, ID, in the input
2203
   file and the local symbol index, SYM.  */
2204
#define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
2205
  (((((ID) & 0xff) << 24) | (((ID) & 0xff00) << 8)) \
2206
   ^ (SYM) ^ ((ID) >> 16))
2207 24 jeremybenn
 
2208
/* This is the condition under which finish_dynamic_symbol will be called.
2209
   If our finish_dynamic_symbol isn't called, we'll need to do something
2210
   about initializing any .plt and .got entries in relocate_section.  */
2211
#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
2212
  ((DYN)                                                                \
2213
   && ((SHARED) || !(H)->forced_local)                                  \
2214
   && ((H)->dynindx != -1 || (H)->forced_local))
2215
 
2216
/* This macro is to avoid lots of duplicated code in the body
2217
   of xxx_relocate_section() in the various elfxx-xxxx.c files.  */
2218
#define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel,    \
2219
                                r_symndx, symtab_hdr, sym_hashes,       \
2220
                                h, sec, relocation,                     \
2221
                                unresolved_reloc, warned)               \
2222
  do                                                                    \
2223
    {                                                                   \
2224
      /* It seems this can happen with erroneous or unsupported         \
2225
         input (mixing a.out and elf in an archive, for example.)  */   \
2226
      if (sym_hashes == NULL)                                           \
2227
        return FALSE;                                                   \
2228
                                                                        \
2229
      h = sym_hashes[r_symndx - symtab_hdr->sh_info];                   \
2230
                                                                        \
2231
      while (h->root.type == bfd_link_hash_indirect                     \
2232
             || h->root.type == bfd_link_hash_warning)                  \
2233
        h = (struct elf_link_hash_entry *) h->root.u.i.link;            \
2234
                                                                        \
2235
      warned = FALSE;                                                   \
2236
      unresolved_reloc = FALSE;                                         \
2237
      relocation = 0;                                                    \
2238
      if (h->root.type == bfd_link_hash_defined                         \
2239
          || h->root.type == bfd_link_hash_defweak)                     \
2240
        {                                                               \
2241
          sec = h->root.u.def.section;                                  \
2242
          if (sec == NULL                                               \
2243
              || sec->output_section == NULL)                           \
2244
            /* Set a flag that will be cleared later if we find a       \
2245
               relocation value for this symbol.  output_section        \
2246
               is typically NULL for symbols satisfied by a shared      \
2247
               library.  */                                             \
2248
            unresolved_reloc = TRUE;                                    \
2249
          else                                                          \
2250
            relocation = (h->root.u.def.value                           \
2251
                          + sec->output_section->vma                    \
2252
                          + sec->output_offset);                        \
2253
        }                                                               \
2254
      else if (h->root.type == bfd_link_hash_undefweak)                 \
2255
        ;                                                               \
2256
      else if (info->unresolved_syms_in_objects == RM_IGNORE            \
2257
               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)          \
2258
        ;                                                               \
2259
      else if (!info->relocatable)                                      \
2260
        {                                                               \
2261
          bfd_boolean err;                                              \
2262
          err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR  \
2263
                 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT);       \
2264
          if (!info->callbacks->undefined_symbol (info,                 \
2265
                                                  h->root.root.string,  \
2266
                                                  input_bfd,            \
2267
                                                  input_section,        \
2268
                                                  rel->r_offset, err))  \
2269
            return FALSE;                                               \
2270
          warned = TRUE;                                                \
2271
        }                                                               \
2272
    }                                                                   \
2273
  while (0)
2274
 
2275
/* Will a symbol be bound to the the definition within the shared
2276
   library, if any.  */
2277
#define SYMBOLIC_BIND(INFO, H) \
2278
    ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic))
2279
 
2280
#endif /* _LIBELF_H_ */

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