1/* libbfd.h -- Declarations used by bfd library *implementation*.
2   (This include file is not for users of the library.)
3
4   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
5   1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
6
7   Written by Cygnus Support.
8
9This file is part of BFD, the Binary File Descriptor library.
10
11This program is free software; you can redistribute it and/or modify
12it under the terms of the GNU General Public License as published by
13the Free Software Foundation; either version 2 of the License, or
14(at your option) any later version.
15
16This program is distributed in the hope that it will be useful,
17but WITHOUT ANY WARRANTY; without even the implied warranty of
18MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19GNU General Public License for more details.
20
21You should have received a copy of the GNU General Public License
22along with this program; if not, write to the Free Software
23Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
24
25/* Align an address upward to a boundary, expressed as a number of bytes.
26   E.g. align to an 8-byte boundary with argument of 8.  Take care never
27   to wrap around if the address is within boundary-1 of the end of the
28   address space.  */
29#define BFD_ALIGN(this, boundary)					  \
30  ((((bfd_vma) (this) + (boundary) - 1) >= (bfd_vma) (this))		  \
31   ? (((bfd_vma) (this) + ((boundary) - 1)) & ~ (bfd_vma) ((boundary)-1)) \
32   : ~ (bfd_vma) 0)
33
34/* If you want to read and write large blocks, you might want to do it
35   in quanta of this amount */
36#define DEFAULT_BUFFERSIZE 8192
37
38/* Set a tdata field.  Can't use the other macros for this, since they
39   do casts, and casting to the left of assignment isn't portable.  */
40#define set_tdata(bfd, v) ((bfd)->tdata.any = (v))
41
42/* If BFD_IN_MEMORY is set for a BFD, then the iostream fields points
43   to an instance of this structure.  */
44
45struct bfd_in_memory
46{
47  /* Size of buffer.  */
48  bfd_size_type size;
49  /* Buffer holding contents of BFD.  */
50  bfd_byte *buffer;
51};
52
53/* tdata for an archive.  For an input archive, cache
54   needs to be free()'d.  For an output archive, symdefs do.  */
55
56struct artdata {
57  file_ptr first_file_filepos;
58  /* Speed up searching the armap */
59  struct ar_cache *cache;
60  bfd *archive_head;		/* Only interesting in output routines */
61  carsym *symdefs;		/* the symdef entries */
62  symindex symdef_count;	/* how many there are */
63  char *extended_names;		/* clever intel extension */
64  time_t  armap_timestamp;	/* Timestamp value written into armap.
65				   This is used for BSD archives to check
66				   that the timestamp is recent enough
67				   for the BSD linker to not complain,
68				   just before we finish writing an
69				   archive.  */
70  file_ptr armap_datepos;	/* Position within archive to seek to
71				   rewrite the date field.  */
72  void *tdata;			/* Backend specific information.  */
73};
74
75#define bfd_ardata(bfd) ((bfd)->tdata.aout_ar_data)
76
77/* Goes in bfd's arelt_data slot */
78struct areltdata {
79  char * arch_header;		/* it's actually a string */
80  unsigned int parsed_size;	/* octets of filesize not including ar_hdr */
81  char *filename;		/* null-terminated */
82};
83
84#define arelt_size(bfd) (((struct areltdata *)((bfd)->arelt_data))->parsed_size)
85
86extern void *bfd_malloc
87  (bfd_size_type);
88extern void *bfd_realloc
89  (void *, bfd_size_type);
90extern void *bfd_zmalloc
91  (bfd_size_type);
92
93extern bfd_error_handler_type _bfd_error_handler;
94
95/* These routines allocate and free things on the BFD's objalloc.  */
96
97extern void *bfd_alloc
98  (bfd *, bfd_size_type);
99extern void *bfd_zalloc
100  (bfd *, bfd_size_type);
101extern void bfd_release
102  (bfd *, void *);
103
104bfd * _bfd_create_empty_archive_element_shell
105  (bfd *obfd);
106bfd * _bfd_look_for_bfd_in_cache
107  (bfd *, file_ptr);
108bfd_boolean _bfd_add_bfd_to_archive_cache
109  (bfd *, file_ptr, bfd *);
110bfd_boolean _bfd_generic_mkarchive
111  (bfd *abfd);
112const bfd_target *bfd_generic_archive_p
113  (bfd *abfd);
114bfd_boolean bfd_slurp_armap
115  (bfd *abfd);
116bfd_boolean bfd_slurp_bsd_armap_f2
117  (bfd *abfd);
118#define bfd_slurp_bsd_armap bfd_slurp_armap
119#define bfd_slurp_coff_armap bfd_slurp_armap
120bfd_boolean _bfd_slurp_extended_name_table
121  (bfd *abfd);
122extern bfd_boolean _bfd_construct_extended_name_table
123  (bfd *, bfd_boolean, char **, bfd_size_type *);
124bfd_boolean _bfd_write_archive_contents
125  (bfd *abfd);
126bfd_boolean _bfd_compute_and_write_armap
127  (bfd *, unsigned int elength);
128bfd *_bfd_get_elt_at_filepos
129  (bfd *archive, file_ptr filepos);
130extern bfd *_bfd_generic_get_elt_at_index
131  (bfd *, symindex);
132bfd * _bfd_new_bfd
133  (void);
134void _bfd_delete_bfd
135  (bfd *);
136
137bfd_boolean bfd_false
138  (bfd *ignore);
139bfd_boolean bfd_true
140  (bfd *ignore);
141void *bfd_nullvoidptr
142  (bfd *ignore);
143int bfd_0
144  (bfd *ignore);
145unsigned int bfd_0u
146  (bfd *ignore);
147long bfd_0l
148  (bfd *ignore);
149long _bfd_n1
150  (bfd *ignore);
151void bfd_void
152  (bfd *ignore);
153
154bfd *_bfd_new_bfd_contained_in
155  (bfd *);
156const bfd_target *_bfd_dummy_target
157  (bfd *abfd);
158
159void bfd_dont_truncate_arname
160  (bfd *abfd, const char *filename, char *hdr);
161void bfd_bsd_truncate_arname
162  (bfd *abfd, const char *filename, char *hdr);
163void bfd_gnu_truncate_arname
164  (bfd *abfd, const char *filename, char *hdr);
165
166bfd_boolean bsd_write_armap
167  (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
168   int stridx);
169
170bfd_boolean coff_write_armap
171  (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
172   int stridx);
173
174extern void *_bfd_generic_read_ar_hdr
175  (bfd *);
176
177extern void *_bfd_generic_read_ar_hdr_mag
178  (bfd *, const char *);
179
180bfd * bfd_generic_openr_next_archived_file
181  (bfd *archive, bfd *last_file);
182
183int bfd_generic_stat_arch_elt
184  (bfd *, struct stat *);
185
186#define _bfd_read_ar_hdr(abfd) \
187  BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
188
189/* Generic routines to use for BFD_JUMP_TABLE_GENERIC.  Use
190   BFD_JUMP_TABLE_GENERIC (_bfd_generic).  */
191
192#define _bfd_generic_close_and_cleanup bfd_true
193#define _bfd_generic_bfd_free_cached_info bfd_true
194#define _bfd_generic_new_section_hook \
195  ((bfd_boolean (*) (bfd *, asection *)) bfd_true)
196extern bfd_boolean _bfd_generic_get_section_contents
197  (bfd *, asection *, void *, file_ptr, bfd_size_type);
198extern bfd_boolean _bfd_generic_get_section_contents_in_window
199  (bfd *, asection *, bfd_window *, file_ptr, bfd_size_type);
200
201/* Generic routines to use for BFD_JUMP_TABLE_COPY.  Use
202   BFD_JUMP_TABLE_COPY (_bfd_generic).  */
203
204#define _bfd_generic_bfd_copy_private_bfd_data \
205  ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
206#define _bfd_generic_bfd_merge_private_bfd_data \
207  ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
208#define _bfd_generic_bfd_set_private_flags \
209  ((bfd_boolean (*) (bfd *, flagword)) bfd_true)
210#define _bfd_generic_bfd_copy_private_section_data \
211  ((bfd_boolean (*) (bfd *, asection *, bfd *, asection *)) bfd_true)
212#define _bfd_generic_bfd_copy_private_symbol_data \
213  ((bfd_boolean (*) (bfd *, asymbol *, bfd *, asymbol *)) bfd_true)
214#define _bfd_generic_bfd_print_private_bfd_data \
215  ((bfd_boolean (*) (bfd *, void *)) bfd_true)
216
217/* Routines to use for BFD_JUMP_TABLE_CORE when there is no core file
218   support.  Use BFD_JUMP_TABLE_CORE (_bfd_nocore).  */
219
220extern char *_bfd_nocore_core_file_failing_command
221  (bfd *);
222extern int _bfd_nocore_core_file_failing_signal
223  (bfd *);
224extern bfd_boolean _bfd_nocore_core_file_matches_executable_p
225  (bfd *, bfd *);
226
227/* Routines to use for BFD_JUMP_TABLE_ARCHIVE when there is no archive
228   file support.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive).  */
229
230#define _bfd_noarchive_slurp_armap bfd_false
231#define _bfd_noarchive_slurp_extended_name_table bfd_false
232#define _bfd_noarchive_construct_extended_name_table \
233  ((bfd_boolean (*) (bfd *, char **, bfd_size_type *, const char **)) \
234   bfd_false)
235#define _bfd_noarchive_truncate_arname \
236  ((void (*) (bfd *, const char *, char *)) bfd_void)
237#define _bfd_noarchive_write_armap \
238  ((bfd_boolean (*) (bfd *, unsigned int, struct orl *, unsigned int, int)) \
239   bfd_false)
240#define _bfd_noarchive_read_ar_hdr bfd_nullvoidptr
241#define _bfd_noarchive_openr_next_archived_file \
242  ((bfd *(*) (bfd *, bfd *)) bfd_nullvoidptr)
243#define _bfd_noarchive_get_elt_at_index \
244  ((bfd *(*) (bfd *, symindex)) bfd_nullvoidptr)
245#define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
246#define _bfd_noarchive_update_armap_timestamp bfd_false
247
248/* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
249   archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
250
251#define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
252#define _bfd_archive_bsd_slurp_extended_name_table \
253  _bfd_slurp_extended_name_table
254extern bfd_boolean _bfd_archive_bsd_construct_extended_name_table
255  (bfd *, char **, bfd_size_type *, const char **);
256#define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
257#define _bfd_archive_bsd_write_armap bsd_write_armap
258#define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
259#define _bfd_archive_bsd_openr_next_archived_file \
260  bfd_generic_openr_next_archived_file
261#define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
262#define _bfd_archive_bsd_generic_stat_arch_elt \
263  bfd_generic_stat_arch_elt
264extern bfd_boolean _bfd_archive_bsd_update_armap_timestamp
265  (bfd *);
266
267/* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
268   archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
269
270#define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
271#define _bfd_archive_coff_slurp_extended_name_table \
272  _bfd_slurp_extended_name_table
273extern bfd_boolean _bfd_archive_coff_construct_extended_name_table
274  (bfd *, char **, bfd_size_type *, const char **);
275#define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
276#define _bfd_archive_coff_write_armap coff_write_armap
277#define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
278#define _bfd_archive_coff_openr_next_archived_file \
279  bfd_generic_openr_next_archived_file
280#define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
281#define _bfd_archive_coff_generic_stat_arch_elt \
282  bfd_generic_stat_arch_elt
283#define _bfd_archive_coff_update_armap_timestamp bfd_true
284
285/* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
286   support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
287
288#define _bfd_nosymbols_get_symtab_upper_bound _bfd_n1
289#define _bfd_nosymbols_canonicalize_symtab \
290  ((long (*) (bfd *, asymbol **)) _bfd_n1)
291#define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
292#define _bfd_nosymbols_print_symbol \
293  ((void (*) (bfd *, void *, asymbol *, bfd_print_symbol_type)) bfd_void)
294#define _bfd_nosymbols_get_symbol_info \
295  ((void (*) (bfd *, asymbol *, symbol_info *)) bfd_void)
296#define _bfd_nosymbols_bfd_is_local_label_name \
297  ((bfd_boolean (*) (bfd *, const char *)) bfd_false)
298#define _bfd_nosymbols_get_lineno \
299  ((alent *(*) (bfd *, asymbol *)) bfd_nullvoidptr)
300#define _bfd_nosymbols_find_nearest_line \
301  ((bfd_boolean (*) (bfd *, asection *, asymbol **, bfd_vma, const char **, \
302		     const char **, unsigned int *)) \
303   bfd_false)
304#define _bfd_nosymbols_bfd_make_debug_symbol \
305  ((asymbol *(*) (bfd *, void *, unsigned long)) bfd_nullvoidptr)
306#define _bfd_nosymbols_read_minisymbols \
307  ((long (*) (bfd *, bfd_boolean, void **, unsigned int *)) _bfd_n1)
308#define _bfd_nosymbols_minisymbol_to_symbol \
309  ((asymbol *(*) (bfd *, bfd_boolean, const void *, asymbol *)) \
310   bfd_nullvoidptr)
311
312/* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
313   support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
314
315#define _bfd_norelocs_get_reloc_upper_bound \
316  ((long (*) (bfd *, asection *)) _bfd_n1)
317#define _bfd_norelocs_canonicalize_reloc \
318  ((long (*) (bfd *, asection *, arelent **, asymbol **)) _bfd_n1)
319#define _bfd_norelocs_bfd_reloc_type_lookup \
320  ((reloc_howto_type *(*) (bfd *, bfd_reloc_code_real_type)) bfd_nullvoidptr)
321
322/* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
323   be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
324
325#define _bfd_nowrite_set_arch_mach \
326  ((bfd_boolean (*) (bfd *, enum bfd_architecture, unsigned long)) \
327   bfd_false)
328#define _bfd_nowrite_set_section_contents \
329  ((bfd_boolean (*) (bfd *, asection *, const void *, file_ptr, bfd_size_type)) \
330   bfd_false)
331
332/* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
333   BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
334
335#define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
336extern bfd_boolean _bfd_generic_set_section_contents
337  (bfd *, asection *, const void *, file_ptr, bfd_size_type);
338
339/* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
340   support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
341
342#define _bfd_nolink_sizeof_headers ((int (*) (bfd *, bfd_boolean)) bfd_0)
343#define _bfd_nolink_bfd_get_relocated_section_contents \
344  ((bfd_byte *(*) (bfd *, struct bfd_link_info *, struct bfd_link_order *, \
345		   bfd_byte *, bfd_boolean, asymbol **)) \
346   bfd_nullvoidptr)
347#define _bfd_nolink_bfd_relax_section \
348  ((bfd_boolean (*) \
349    (bfd *, asection *, struct bfd_link_info *, bfd_boolean *)) \
350   bfd_false)
351#define _bfd_nolink_bfd_gc_sections \
352  ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
353   bfd_false)
354#define _bfd_nolink_bfd_merge_sections \
355  ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
356   bfd_false)
357#define _bfd_nolink_bfd_discard_group \
358  ((bfd_boolean (*) (bfd *, struct bfd_section *)) \
359   bfd_false)
360#define _bfd_nolink_bfd_link_hash_table_create \
361  ((struct bfd_link_hash_table *(*) (bfd *)) bfd_nullvoidptr)
362#define _bfd_nolink_bfd_link_hash_table_free \
363  ((void (*) (struct bfd_link_hash_table *)) bfd_void)
364#define _bfd_nolink_bfd_link_add_symbols \
365  ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
366#define _bfd_nolink_bfd_link_just_syms \
367  ((void (*) (asection *, struct bfd_link_info *)) bfd_void)
368#define _bfd_nolink_bfd_final_link \
369  ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
370#define _bfd_nolink_bfd_link_split_section \
371  ((bfd_boolean (*) (bfd *, struct bfd_section *)) bfd_false)
372
373/* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
374   have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
375   (_bfd_nodynamic).  */
376
377#define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_n1
378#define _bfd_nodynamic_canonicalize_dynamic_symtab \
379  ((long (*) (bfd *, asymbol **)) _bfd_n1)
380#define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_n1
381#define _bfd_nodynamic_canonicalize_dynamic_reloc \
382  ((long (*) (bfd *, arelent **, asymbol **)) _bfd_n1)
383
384/* Generic routine to determine of the given symbol is a local
385   label.  */
386extern bfd_boolean bfd_generic_is_local_label_name
387  (bfd *, const char *);
388
389/* Generic minisymbol routines.  */
390extern long _bfd_generic_read_minisymbols
391  (bfd *, bfd_boolean, void **, unsigned int *);
392extern asymbol *_bfd_generic_minisymbol_to_symbol
393  (bfd *, bfd_boolean, const void *, asymbol *);
394
395/* Find the nearest line using .stab/.stabstr sections.  */
396extern bfd_boolean _bfd_stab_section_find_nearest_line
397  (bfd *, asymbol **, asection *, bfd_vma, bfd_boolean *,
398   const char **, const char **, unsigned int *, void **);
399
400/* Find the neaderst line using DWARF 1 debugging information.  */
401extern bfd_boolean _bfd_dwarf1_find_nearest_line
402  (bfd *, asection *, asymbol **, bfd_vma, const char **,
403   const char **, unsigned int *);
404
405/* Find the nearest line using DWARF 2 debugging information.  */
406extern bfd_boolean _bfd_dwarf2_find_nearest_line
407  (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
408   unsigned int *, unsigned int, void **);
409
410/* Create a new section entry.  */
411extern struct bfd_hash_entry *bfd_section_hash_newfunc
412  (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
413
414/* A routine to create entries for a bfd_link_hash_table.  */
415extern struct bfd_hash_entry *_bfd_link_hash_newfunc
416  (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
417   const char *string);
418
419/* Initialize a bfd_link_hash_table.  */
420extern bfd_boolean _bfd_link_hash_table_init
421  (struct bfd_link_hash_table *, bfd *,
422   struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
423			       struct bfd_hash_table *,
424			       const char *));
425
426/* Generic link hash table creation routine.  */
427extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
428  (bfd *);
429
430/* Generic link hash table destruction routine.  */
431extern void _bfd_generic_link_hash_table_free
432  (struct bfd_link_hash_table *);
433
434/* Generic add symbol routine.  */
435extern bfd_boolean _bfd_generic_link_add_symbols
436  (bfd *, struct bfd_link_info *);
437
438/* Generic add symbol routine.  This version is used by targets for
439   which the linker must collect constructors and destructors by name,
440   as the collect2 program does.  */
441extern bfd_boolean _bfd_generic_link_add_symbols_collect
442  (bfd *, struct bfd_link_info *);
443
444/* Generic archive add symbol routine.  */
445extern bfd_boolean _bfd_generic_link_add_archive_symbols
446  (bfd *, struct bfd_link_info *,
447   bfd_boolean (*) (bfd *, struct bfd_link_info *, bfd_boolean *));
448
449/* Forward declaration to avoid prototype errors.  */
450typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
451
452/* Generic routine to add a single symbol.  */
453extern bfd_boolean _bfd_generic_link_add_one_symbol
454  (struct bfd_link_info *, bfd *, const char *name, flagword,
455   asection *, bfd_vma, const char *, bfd_boolean copy,
456   bfd_boolean constructor, struct bfd_link_hash_entry **);
457
458/* Generic routine to mark section as supplying symbols only.  */
459extern void _bfd_generic_link_just_syms
460  (asection *, struct bfd_link_info *);
461
462/* Generic link routine.  */
463extern bfd_boolean _bfd_generic_final_link
464  (bfd *, struct bfd_link_info *);
465
466extern bfd_boolean _bfd_generic_link_split_section
467  (bfd *, struct bfd_section *);
468
469/* Generic reloc_link_order processing routine.  */
470extern bfd_boolean _bfd_generic_reloc_link_order
471  (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
472
473/* Default link order processing routine.  */
474extern bfd_boolean _bfd_default_link_order
475  (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
476
477/* Count the number of reloc entries in a link order list.  */
478extern unsigned int _bfd_count_link_order_relocs
479  (struct bfd_link_order *);
480
481/* Final link relocation routine.  */
482extern bfd_reloc_status_type _bfd_final_link_relocate
483  (reloc_howto_type *, bfd *, asection *, bfd_byte *,
484   bfd_vma, bfd_vma, bfd_vma);
485
486/* Relocate a particular location by a howto and a value.  */
487extern bfd_reloc_status_type _bfd_relocate_contents
488  (reloc_howto_type *, bfd *, bfd_vma, bfd_byte *);
489
490/* Link stabs in sections in the first pass.  */
491
492extern bfd_boolean _bfd_link_section_stabs
493  (bfd *, void **, asection *, asection *, void **, bfd_size_type *);
494
495/* Eliminate stabs for discarded functions and symbols.  */
496extern bfd_boolean _bfd_discard_section_stabs
497  (bfd *, asection *, void *, bfd_boolean (*) (bfd_vma, void *), void *);
498
499/* Write out the .stab section when linking stabs in sections.  */
500
501extern bfd_boolean _bfd_write_section_stabs
502  (bfd *, void **, asection *, void **, bfd_byte *);
503
504/* Write out the .stabstr string table when linking stabs in sections.  */
505
506extern bfd_boolean _bfd_write_stab_strings
507  (bfd *, void **);
508
509/* Find an offset within a .stab section when linking stabs in
510   sections.  */
511
512extern bfd_vma _bfd_stab_section_offset
513  (bfd *, void **, asection *, void **, bfd_vma);
514
515/* Attempt to merge a SEC_MERGE section.  */
516
517extern bfd_boolean _bfd_merge_section
518  (bfd *, void **, asection *, void **);
519
520/* Attempt to merge SEC_MERGE sections.  */
521
522extern bfd_boolean _bfd_merge_sections
523  (bfd *, void *, void (*) (bfd *, asection *));
524
525/* Write out a merged section.  */
526
527extern bfd_boolean _bfd_write_merged_section
528  (bfd *, asection *, void *);
529
530/* Find an offset within a modified SEC_MERGE section.  */
531
532extern bfd_vma _bfd_merged_section_offset
533  (bfd *, asection **, void *, bfd_vma, bfd_vma);
534
535/* Create a string table.  */
536extern struct bfd_strtab_hash *_bfd_stringtab_init
537  (void);
538
539/* Create an XCOFF .debug section style string table.  */
540extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init
541  (void);
542
543/* Free a string table.  */
544extern void _bfd_stringtab_free
545  (struct bfd_strtab_hash *);
546
547/* Get the size of a string table.  */
548extern bfd_size_type _bfd_stringtab_size
549  (struct bfd_strtab_hash *);
550
551/* Add a string to a string table.  */
552extern bfd_size_type _bfd_stringtab_add
553  (struct bfd_strtab_hash *, const char *, bfd_boolean hash, bfd_boolean copy);
554
555/* Write out a string table.  */
556extern bfd_boolean _bfd_stringtab_emit
557  (bfd *, struct bfd_strtab_hash *);
558
559/* Check that endianness of input and output file match.  */
560extern bfd_boolean _bfd_generic_verify_endian_match
561  (bfd *, bfd *);
562
563/* Macros to tell if bfds are read or write enabled.
564
565   Note that bfds open for read may be scribbled into if the fd passed
566   to bfd_fdopenr is actually open both for read and write
567   simultaneously.  However an output bfd will never be open for
568   read.  Therefore sometimes you want to check bfd_read_p or
569   !bfd_read_p, and only sometimes bfd_write_p.
570*/
571
572#define	bfd_read_p(abfd) \
573  ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
574#define	bfd_write_p(abfd) \
575  ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
576
577void bfd_assert
578  (const char*,int);
579
580#define BFD_ASSERT(x) \
581  { if (!(x)) bfd_assert(__FILE__,__LINE__); }
582
583#define BFD_FAIL() \
584  { bfd_assert(__FILE__,__LINE__); }
585
586extern void _bfd_abort
587  (const char *, int, const char *) ATTRIBUTE_NORETURN;
588
589/* if gcc >= 2.6, we can give a function name, too */
590#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
591#define __PRETTY_FUNCTION__  ((char *) NULL)
592#endif
593
594#undef abort
595#define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
596
597/* Manipulate a system FILE but using BFD's "file_ptr", rather than
598   the system "off_t" or "off64_t", as the offset.  */
599extern file_ptr real_ftell (FILE *file);
600extern int real_fseek (FILE *file, file_ptr offset, int whence);
601
602FILE *	bfd_cache_lookup_worker
603  (bfd *);
604
605extern bfd *bfd_last_cache;
606
607/* List of supported target vectors, and the default vector (if
608   bfd_default_vector[0] is NULL, there is no default).  */
609extern const bfd_target * const *bfd_target_vector;
610extern const bfd_target *bfd_default_vector[];
611
612/* List of associated target vectors.  */
613extern const bfd_target * const *bfd_associated_vector;
614
615/* Functions shared by the ECOFF and MIPS ELF backends, which have no
616   other common header files.  */
617
618#if defined(__STDC__) || defined(ALMOST_STDC)
619struct ecoff_find_line;
620#endif
621
622extern bfd_boolean _bfd_ecoff_locate_line
623  (bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
624   const struct ecoff_debug_swap * const, struct ecoff_find_line *,
625   const char **, const char **, unsigned int *);
626extern bfd_boolean _bfd_ecoff_get_accumulated_pdr
627  (void *, bfd_byte *);
628extern bfd_boolean _bfd_ecoff_get_accumulated_sym
629  (void *, bfd_byte *);
630extern bfd_boolean _bfd_ecoff_get_accumulated_ss
631  (void *, bfd_byte *);
632
633extern bfd_vma _bfd_get_gp_value
634  (bfd *);
635extern void _bfd_set_gp_value
636  (bfd *, bfd_vma);
637
638/* Function shared by the COFF and ELF SH backends, which have no
639   other common header files.  */
640
641#ifndef _bfd_sh_align_load_span
642extern bfd_boolean _bfd_sh_align_load_span
643  (bfd *, asection *, bfd_byte *,
644   bfd_boolean (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
645   void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bfd_boolean *);
646#endif
647