bfd/libbfd-in.h

   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, 2005, 2006, 2007
   6    Free Software Foundation, Inc.
   7
   8    Written by Cygnus Support.
   9
  10    This file is part of BFD, the Binary File Descriptor library.
  11
  12    This program is free software; you can redistribute it and/or modify
  13    it under the terms of the GNU General Public License as published by
  14    the Free Software Foundation; either version 3 of the License, or
  15    (at your option) any later version.
  16
  17    This program is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program; if not, write to the Free Software
  24    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  25    MA 02110-1301, USA.  */
  26
  27 #include "hashtab.h"
  28
  29 /* Align an address upward to a boundary, expressed as a number of bytes.
  30    E.g. align to an 8-byte boundary with argument of 8.  Take care never
  31    to wrap around if the address is within boundary-1 of the end of the
  32    address space.  */
  33 #define BFD_ALIGN(this, boundary)                                         \
  34   ((((bfd_vma) (this) + (boundary) - 1) >= (bfd_vma) (this))              \
  35    ? (((bfd_vma) (this) + ((boundary) - 1)) & ~ (bfd_vma) ((boundary)-1)) \
  36    : ~ (bfd_vma) 0)
  37
  38 /* If you want to read and write large blocks, you might want to do it
  39    in quanta of this amount */
  40 #define DEFAULT_BUFFERSIZE 8192
  41
  42 /* Set a tdata field.  Can't use the other macros for this, since they
  43    do casts, and casting to the left of assignment isn't portable.  */
  44 #define set_tdata(bfd, v) ((bfd)->tdata.any = (v))
  45
  46 /* If BFD_IN_MEMORY is set for a BFD, then the iostream fields points
  47    to an instance of this structure.  */
  48
  49 struct bfd_in_memory
  50 {
  51   /* Size of buffer.  */
  52   bfd_size_type size;
  53   /* Buffer holding contents of BFD.  */
  54   bfd_byte *buffer;
  55 };
  56
  57 struct section_hash_entry
  58 {
  59   struct bfd_hash_entry root;
  60   asection section;
  61 };
  62
  63 /* tdata for an archive.  For an input archive, cache
  64    needs to be free()'d.  For an output archive, symdefs do.  */
  65
  66 struct artdata {
  67   file_ptr first_file_filepos;
  68   /* Speed up searching the armap */
  69   htab_t cache;
  70   bfd *archive_head;            /* Only interesting in output routines */
  71   carsym *symdefs;              /* the symdef entries */
  72   symindex symdef_count;        /* how many there are */
  73   char *extended_names;         /* clever intel extension */
  74   bfd_size_type extended_names_size; /* Size of extended names */
  75   /* when more compilers are standard C, this can be a time_t */
  76   long  armap_timestamp;        /* Timestamp value written into armap.
  77                                    This is used for BSD archives to check
  78                                    that the timestamp is recent enough
  79                                    for the BSD linker to not complain,
  80                                    just before we finish writing an
  81                                    archive.  */
  82   file_ptr armap_datepos;       /* Position within archive to seek to
  83                                    rewrite the date field.  */
  84   void *tdata;                  /* Backend specific information.  */
  85 };
  86
  87 #define bfd_ardata(bfd) ((bfd)->tdata.aout_ar_data)
  88
  89 /* Goes in bfd's arelt_data slot */
  90 struct areltdata {
  91   char * arch_header;           /* it's actually a string */
  92   unsigned int parsed_size;     /* octets of filesize not including ar_hdr */
  93   char *filename;               /* null-terminated */
  94 };
  95
  96 #define arelt_size(bfd) (((struct areltdata *)((bfd)->arelt_data))->parsed_size)
  97
  98 extern void *bfd_malloc
  99   (bfd_size_type);
 100 extern void *bfd_realloc
 101   (void *, bfd_size_type);
 102 extern void *bfd_zmalloc
 103   (bfd_size_type);
 104 extern void *bfd_malloc2
 105   (bfd_size_type, bfd_size_type);
 106 extern void *bfd_realloc2
 107   (void *, bfd_size_type, bfd_size_type);
 108 extern void *bfd_zmalloc2
 109   (bfd_size_type, bfd_size_type);
 110
 111 extern void _bfd_default_error_handler (const char *s, ...);
 112 extern bfd_error_handler_type _bfd_error_handler;
 113
 114 /* These routines allocate and free things on the BFD's objalloc.  */
 115
 116 extern void *bfd_alloc
 117   (bfd *, bfd_size_type);
 118 extern void *bfd_zalloc
 119   (bfd *, bfd_size_type);
 120 extern void *bfd_alloc2
 121   (bfd *, bfd_size_type, bfd_size_type);
 122 extern void *bfd_zalloc2
 123   (bfd *, bfd_size_type, bfd_size_type);
 124 extern void bfd_release
 125   (bfd *, void *);
 126
 127 bfd * _bfd_create_empty_archive_element_shell
 128   (bfd *obfd);
 129 bfd * _bfd_look_for_bfd_in_cache
 130   (bfd *, file_ptr);
 131 bfd_boolean _bfd_add_bfd_to_archive_cache
 132   (bfd *, file_ptr, bfd *);
 133 bfd_boolean _bfd_generic_mkarchive
 134   (bfd *abfd);
 135 const bfd_target *bfd_generic_archive_p
 136   (bfd *abfd);
 137 bfd_boolean bfd_slurp_armap
 138   (bfd *abfd);
 139 bfd_boolean bfd_slurp_bsd_armap_f2
 140   (bfd *abfd);
 141 #define bfd_slurp_bsd_armap bfd_slurp_armap
 142 #define bfd_slurp_coff_armap bfd_slurp_armap
 143 bfd_boolean _bfd_slurp_extended_name_table
 144   (bfd *abfd);
 145 extern bfd_boolean _bfd_construct_extended_name_table
 146   (bfd *, bfd_boolean, char **, bfd_size_type *);
 147 bfd_boolean _bfd_write_archive_contents
 148   (bfd *abfd);
 149 bfd_boolean _bfd_compute_and_write_armap
 150   (bfd *, unsigned int elength);
 151 bfd *_bfd_get_elt_at_filepos
 152   (bfd *archive, file_ptr filepos);
 153 extern bfd *_bfd_generic_get_elt_at_index
 154   (bfd *, symindex);
 155 bfd * _bfd_new_bfd
 156   (void);
 157 void _bfd_delete_bfd
 158   (bfd *);
 159 bfd_boolean _bfd_free_cached_info
 160   (bfd *);
 161
 162 bfd_boolean bfd_false
 163   (bfd *ignore);
 164 bfd_boolean bfd_true
 165   (bfd *ignore);
 166 void *bfd_nullvoidptr
 167   (bfd *ignore);
 168 int bfd_0
 169   (bfd *ignore);
 170 unsigned int bfd_0u
 171   (bfd *ignore);
 172 long bfd_0l
 173   (bfd *ignore);
 174 long _bfd_n1
 175   (bfd *ignore);
 176 void bfd_void
 177   (bfd *ignore);
 178
 179 bfd *_bfd_new_bfd_contained_in
 180   (bfd *);
 181 const bfd_target *_bfd_dummy_target
 182   (bfd *abfd);
 183
 184 void bfd_dont_truncate_arname
 185   (bfd *abfd, const char *filename, char *hdr);
 186 void bfd_bsd_truncate_arname
 187   (bfd *abfd, const char *filename, char *hdr);
 188 void bfd_gnu_truncate_arname
 189   (bfd *abfd, const char *filename, char *hdr);
 190
 191 bfd_boolean bsd_write_armap
 192   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 193    int stridx);
 194
 195 bfd_boolean coff_write_armap
 196   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 197    int stridx);
 198
 199 extern void *_bfd_generic_read_ar_hdr
 200   (bfd *);
 201 extern void _bfd_ar_spacepad
 202   (char *, size_t, const char *, long);
 203
 204 extern void *_bfd_generic_read_ar_hdr_mag
 205   (bfd *, const char *);
 206
 207 bfd * bfd_generic_openr_next_archived_file
 208   (bfd *archive, bfd *last_file);
 209
 210 int bfd_generic_stat_arch_elt
 211   (bfd *, struct stat *);
 212
 213 #define _bfd_read_ar_hdr(abfd) \
 214   BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
 215 \f
 216 /* Generic routines to use for BFD_JUMP_TABLE_GENERIC.  Use
 217    BFD_JUMP_TABLE_GENERIC (_bfd_generic).  */
 218
 219 #define _bfd_generic_close_and_cleanup bfd_true
 220 #define _bfd_generic_bfd_free_cached_info bfd_true
 221 extern bfd_boolean _bfd_generic_new_section_hook
 222   (bfd *, asection *);
 223 extern bfd_boolean _bfd_generic_get_section_contents
 224   (bfd *, asection *, void *, file_ptr, bfd_size_type);
 225 extern bfd_boolean _bfd_generic_get_section_contents_in_window
 226   (bfd *, asection *, bfd_window *, file_ptr, bfd_size_type);
 227
 228 /* Generic routines to use for BFD_JUMP_TABLE_COPY.  Use
 229    BFD_JUMP_TABLE_COPY (_bfd_generic).  */
 230
 231 #define _bfd_generic_bfd_copy_private_bfd_data \
 232   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 233 #define _bfd_generic_bfd_merge_private_bfd_data \
 234   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 235 #define _bfd_generic_bfd_set_private_flags \
 236   ((bfd_boolean (*) (bfd *, flagword)) bfd_true)
 237 #define _bfd_generic_bfd_copy_private_section_data \
 238   ((bfd_boolean (*) (bfd *, asection *, bfd *, asection *)) bfd_true)
 239 #define _bfd_generic_bfd_copy_private_symbol_data \
 240   ((bfd_boolean (*) (bfd *, asymbol *, bfd *, asymbol *)) bfd_true)
 241 #define _bfd_generic_bfd_copy_private_header_data \
 242   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 243 #define _bfd_generic_bfd_print_private_bfd_data \
 244   ((bfd_boolean (*) (bfd *, void *)) bfd_true)
 245
 246 extern bfd_boolean _bfd_generic_init_private_section_data
 247   (bfd *, asection *, bfd *, asection *, struct bfd_link_info *);
 248
 249 /* Routines to use for BFD_JUMP_TABLE_CORE when there is no core file
 250    support.  Use BFD_JUMP_TABLE_CORE (_bfd_nocore).  */
 251
 252 extern char *_bfd_nocore_core_file_failing_command
 253   (bfd *);
 254 extern int _bfd_nocore_core_file_failing_signal
 255   (bfd *);
 256 extern bfd_boolean _bfd_nocore_core_file_matches_executable_p
 257   (bfd *, bfd *);
 258
 259 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE when there is no archive
 260    file support.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive).  */
 261
 262 #define _bfd_noarchive_slurp_armap bfd_false
 263 #define _bfd_noarchive_slurp_extended_name_table bfd_false
 264 #define _bfd_noarchive_construct_extended_name_table \
 265   ((bfd_boolean (*) (bfd *, char **, bfd_size_type *, const char **)) \
 266    bfd_false)
 267 #define _bfd_noarchive_truncate_arname \
 268   ((void (*) (bfd *, const char *, char *)) bfd_void)
 269 #define _bfd_noarchive_write_armap \
 270   ((bfd_boolean (*) (bfd *, unsigned int, struct orl *, unsigned int, int)) \
 271    bfd_false)
 272 #define _bfd_noarchive_read_ar_hdr bfd_nullvoidptr
 273 #define _bfd_noarchive_openr_next_archived_file \
 274   ((bfd *(*) (bfd *, bfd *)) bfd_nullvoidptr)
 275 #define _bfd_noarchive_get_elt_at_index \
 276   ((bfd *(*) (bfd *, symindex)) bfd_nullvoidptr)
 277 #define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
 278 #define _bfd_noarchive_update_armap_timestamp bfd_false
 279
 280 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
 281    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
 282
 283 #define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
 284 #define _bfd_archive_bsd_slurp_extended_name_table \
 285   _bfd_slurp_extended_name_table
 286 extern bfd_boolean _bfd_archive_bsd_construct_extended_name_table
 287   (bfd *, char **, bfd_size_type *, const char **);
 288 #define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
 289 #define _bfd_archive_bsd_write_armap bsd_write_armap
 290 #define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
 291 #define _bfd_archive_bsd_openr_next_archived_file \
 292   bfd_generic_openr_next_archived_file
 293 #define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
 294 #define _bfd_archive_bsd_generic_stat_arch_elt \
 295   bfd_generic_stat_arch_elt
 296 extern bfd_boolean _bfd_archive_bsd_update_armap_timestamp
 297   (bfd *);
 298
 299 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
 300    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
 301
 302 #define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
 303 #define _bfd_archive_coff_slurp_extended_name_table \
 304   _bfd_slurp_extended_name_table
 305 extern bfd_boolean _bfd_archive_coff_construct_extended_name_table
 306   (bfd *, char **, bfd_size_type *, const char **);
 307 #define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
 308 #define _bfd_archive_coff_write_armap coff_write_armap
 309 #define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
 310 #define _bfd_archive_coff_openr_next_archived_file \
 311   bfd_generic_openr_next_archived_file
 312 #define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
 313 #define _bfd_archive_coff_generic_stat_arch_elt \
 314   bfd_generic_stat_arch_elt
 315 #define _bfd_archive_coff_update_armap_timestamp bfd_true
 316
 317 /* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
 318    support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
 319
 320 #define _bfd_nosymbols_get_symtab_upper_bound _bfd_n1
 321 #define _bfd_nosymbols_canonicalize_symtab \
 322   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 323 #define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
 324 #define _bfd_nosymbols_print_symbol \
 325   ((void (*) (bfd *, void *, asymbol *, bfd_print_symbol_type)) bfd_void)
 326 #define _bfd_nosymbols_get_symbol_info \
 327   ((void (*) (bfd *, asymbol *, symbol_info *)) bfd_void)
 328 #define _bfd_nosymbols_bfd_is_local_label_name \
 329   ((bfd_boolean (*) (bfd *, const char *)) bfd_false)
 330 #define _bfd_nosymbols_bfd_is_target_special_symbol \
 331   ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
 332 #define _bfd_nosymbols_get_lineno \
 333   ((alent *(*) (bfd *, asymbol *)) bfd_nullvoidptr)
 334 #define _bfd_nosymbols_find_nearest_line \
 335   ((bfd_boolean (*) (bfd *, asection *, asymbol **, bfd_vma, const char **, \
 336                      const char **, unsigned int *)) \
 337    bfd_false)
 338 #define _bfd_nosymbols_find_inliner_info \
 339   ((bfd_boolean (*) (bfd *, const char **, const char **, unsigned int *)) \
 340    bfd_false)
 341 #define _bfd_nosymbols_bfd_make_debug_symbol \
 342   ((asymbol *(*) (bfd *, void *, unsigned long)) bfd_nullvoidptr)
 343 #define _bfd_nosymbols_read_minisymbols \
 344   ((long (*) (bfd *, bfd_boolean, void **, unsigned int *)) _bfd_n1)
 345 #define _bfd_nosymbols_minisymbol_to_symbol \
 346   ((asymbol *(*) (bfd *, bfd_boolean, const void *, asymbol *)) \
 347    bfd_nullvoidptr)
 348
 349 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 350    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 351
 352 extern long _bfd_norelocs_get_reloc_upper_bound (bfd *, asection *);
 353 extern long _bfd_norelocs_canonicalize_reloc (bfd *, asection *,
 354                                               arelent **, asymbol **);
 355 #define _bfd_norelocs_bfd_reloc_type_lookup \
 356   ((reloc_howto_type *(*) (bfd *, bfd_reloc_code_real_type)) bfd_nullvoidptr)
 357 #define _bfd_norelocs_bfd_reloc_name_lookup \
 358   ((reloc_howto_type *(*) (bfd *, const char *)) bfd_nullvoidptr)
 359
 360 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 361    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 362
 363 #define _bfd_nowrite_set_arch_mach \
 364   ((bfd_boolean (*) (bfd *, enum bfd_architecture, unsigned long)) \
 365    bfd_false)
 366 #define _bfd_nowrite_set_section_contents \
 367   ((bfd_boolean (*) (bfd *, asection *, const void *, file_ptr, bfd_size_type)) \
 368    bfd_false)
 369
 370 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 371    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 372
 373 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 374 extern bfd_boolean _bfd_generic_set_section_contents
 375   (bfd *, asection *, const void *, file_ptr, bfd_size_type);
 376
 377 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 378    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 379
 380 #define _bfd_nolink_sizeof_headers \
 381   ((int (*) (bfd *, struct bfd_link_info *)) bfd_0)
 382 #define _bfd_nolink_bfd_get_relocated_section_contents \
 383   ((bfd_byte *(*) (bfd *, struct bfd_link_info *, struct bfd_link_order *, \
 384                    bfd_byte *, bfd_boolean, asymbol **)) \
 385    bfd_nullvoidptr)
 386 #define _bfd_nolink_bfd_relax_section \
 387   ((bfd_boolean (*) \
 388     (bfd *, asection *, struct bfd_link_info *, bfd_boolean *)) \
 389    bfd_false)
 390 #define _bfd_nolink_bfd_gc_sections \
 391   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 392    bfd_false)
 393 #define _bfd_nolink_bfd_merge_sections \
 394   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 395    bfd_false)
 396 #define _bfd_nolink_bfd_is_group_section \
 397   ((bfd_boolean (*) (bfd *, const struct bfd_section *)) \
 398    bfd_false)
 399 #define _bfd_nolink_bfd_discard_group \
 400   ((bfd_boolean (*) (bfd *, struct bfd_section *)) \
 401    bfd_false)
 402 #define _bfd_nolink_bfd_link_hash_table_create \
 403   ((struct bfd_link_hash_table *(*) (bfd *)) bfd_nullvoidptr)
 404 #define _bfd_nolink_bfd_link_hash_table_free \
 405   ((void (*) (struct bfd_link_hash_table *)) bfd_void)
 406 #define _bfd_nolink_bfd_link_add_symbols \
 407   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 408 #define _bfd_nolink_bfd_link_just_syms \
 409   ((void (*) (asection *, struct bfd_link_info *)) bfd_void)
 410 #define _bfd_nolink_bfd_final_link \
 411   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 412 #define _bfd_nolink_bfd_link_split_section \
 413   ((bfd_boolean (*) (bfd *, struct bfd_section *)) bfd_false)
 414 #define _bfd_nolink_section_already_linked \
 415   ((void (*) (bfd *, struct bfd_section *, struct bfd_link_info *)) bfd_void)
 416
 417 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 418    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 419    (_bfd_nodynamic).  */
 420
 421 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_n1
 422 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 423   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 424 #define _bfd_nodynamic_get_synthetic_symtab \
 425   ((long (*) (bfd *, long, asymbol **, long, asymbol **, asymbol **)) _bfd_n1)
 426 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_n1
 427 #define _bfd_nodynamic_canonicalize_dynamic_reloc \
 428   ((long (*) (bfd *, arelent **, asymbol **)) _bfd_n1)
 429 \f
 430 /* Generic routine to determine of the given symbol is a local
 431    label.  */
 432 extern bfd_boolean bfd_generic_is_local_label_name
 433   (bfd *, const char *);
 434
 435 /* Generic minisymbol routines.  */
 436 extern long _bfd_generic_read_minisymbols
 437   (bfd *, bfd_boolean, void **, unsigned int *);
 438 extern asymbol *_bfd_generic_minisymbol_to_symbol
 439   (bfd *, bfd_boolean, const void *, asymbol *);
 440
 441 /* Find the nearest line using .stab/.stabstr sections.  */
 442 extern bfd_boolean _bfd_stab_section_find_nearest_line
 443   (bfd *, asymbol **, asection *, bfd_vma, bfd_boolean *,
 444    const char **, const char **, unsigned int *, void **);
 445
 446 /* Find the nearest line using DWARF 1 debugging information.  */
 447 extern bfd_boolean _bfd_dwarf1_find_nearest_line
 448   (bfd *, asection *, asymbol **, bfd_vma, const char **,
 449    const char **, unsigned int *);
 450
 451 /* Find the nearest line using DWARF 2 debugging information.  */
 452 extern bfd_boolean _bfd_dwarf2_find_nearest_line
 453   (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
 454    unsigned int *, unsigned int, void **);
 455
 456 /* Find the line using DWARF 2 debugging information.  */
 457 extern bfd_boolean _bfd_dwarf2_find_line
 458   (bfd *, asymbol **, asymbol *, const char **,
 459    unsigned int *, unsigned int, void **);
 460
 461 bfd_boolean _bfd_generic_find_line
 462   (bfd *, asymbol **, asymbol *, const char **, unsigned int *);
 463
 464 /* Find inliner info after calling bfd_find_nearest_line. */
 465 extern bfd_boolean _bfd_dwarf2_find_inliner_info
 466   (bfd *, const char **, const char **, unsigned int *, void **);
 467
 468 /* Create a new section entry.  */
 469 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 470   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 471
 472 /* A routine to create entries for a bfd_link_hash_table.  */
 473 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 474   (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
 475    const char *string);
 476
 477 /* Initialize a bfd_link_hash_table.  */
 478 extern bfd_boolean _bfd_link_hash_table_init
 479   (struct bfd_link_hash_table *, bfd *,
 480    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 481                                struct bfd_hash_table *,
 482                                const char *),
 483    unsigned int);
 484
 485 /* Generic link hash table creation routine.  */
 486 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 487   (bfd *);
 488
 489 /* Generic link hash table destruction routine.  */
 490 extern void _bfd_generic_link_hash_table_free
 491   (struct bfd_link_hash_table *);
 492
 493 /* Generic add symbol routine.  */
 494 extern bfd_boolean _bfd_generic_link_add_symbols
 495   (bfd *, struct bfd_link_info *);
 496
 497 /* Generic add symbol routine.  This version is used by targets for
 498    which the linker must collect constructors and destructors by name,
 499    as the collect2 program does.  */
 500 extern bfd_boolean _bfd_generic_link_add_symbols_collect
 501   (bfd *, struct bfd_link_info *);
 502
 503 /* Generic archive add symbol routine.  */
 504 extern bfd_boolean _bfd_generic_link_add_archive_symbols
 505   (bfd *, struct bfd_link_info *,
 506    bfd_boolean (*) (bfd *, struct bfd_link_info *, bfd_boolean *));
 507
 508 /* Forward declaration to avoid prototype errors.  */
 509 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 510
 511 /* Generic routine to add a single symbol.  */
 512 extern bfd_boolean _bfd_generic_link_add_one_symbol
 513   (struct bfd_link_info *, bfd *, const char *name, flagword,
 514    asection *, bfd_vma, const char *, bfd_boolean copy,
 515    bfd_boolean constructor, struct bfd_link_hash_entry **);
 516
 517 /* Generic routine to mark section as supplying symbols only.  */
 518 extern void _bfd_generic_link_just_syms
 519   (asection *, struct bfd_link_info *);
 520
 521 /* Generic link routine.  */
 522 extern bfd_boolean _bfd_generic_final_link
 523   (bfd *, struct bfd_link_info *);
 524
 525 extern bfd_boolean _bfd_generic_link_split_section
 526   (bfd *, struct bfd_section *);
 527
 528 extern void _bfd_generic_section_already_linked
 529   (bfd *, struct bfd_section *, struct bfd_link_info *);
 530
 531 /* Generic reloc_link_order processing routine.  */
 532 extern bfd_boolean _bfd_generic_reloc_link_order
 533   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 534
 535 /* Default link order processing routine.  */
 536 extern bfd_boolean _bfd_default_link_order
 537   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 538
 539 /* Count the number of reloc entries in a link order list.  */
 540 extern unsigned int _bfd_count_link_order_relocs
 541   (struct bfd_link_order *);
 542
 543 /* Final link relocation routine.  */
 544 extern bfd_reloc_status_type _bfd_final_link_relocate
 545   (reloc_howto_type *, bfd *, asection *, bfd_byte *,
 546    bfd_vma, bfd_vma, bfd_vma);
 547
 548 /* Relocate a particular location by a howto and a value.  */
 549 extern bfd_reloc_status_type _bfd_relocate_contents
 550   (reloc_howto_type *, bfd *, bfd_vma, bfd_byte *);
 551
 552 /* Clear a given location using a given howto.  */
 553 extern void _bfd_clear_contents (reloc_howto_type *howto, bfd *input_bfd,
 554                                  bfd_byte *location);
 555
 556 /* Link stabs in sections in the first pass.  */
 557
 558 extern bfd_boolean _bfd_link_section_stabs
 559   (bfd *, struct stab_info *, asection *, asection *, void **,
 560    bfd_size_type *);
 561
 562 /* Eliminate stabs for discarded functions and symbols.  */
 563 extern bfd_boolean _bfd_discard_section_stabs
 564   (bfd *, asection *, void *, bfd_boolean (*) (bfd_vma, void *), void *);
 565
 566 /* Write out the .stab section when linking stabs in sections.  */
 567
 568 extern bfd_boolean _bfd_write_section_stabs
 569   (bfd *, struct stab_info *, asection *, void **, bfd_byte *);
 570
 571 /* Write out the .stabstr string table when linking stabs in sections.  */
 572
 573 extern bfd_boolean _bfd_write_stab_strings
 574   (bfd *, struct stab_info *);
 575
 576 /* Find an offset within a .stab section when linking stabs in
 577    sections.  */
 578
 579 extern bfd_vma _bfd_stab_section_offset
 580   (asection *, void *, bfd_vma);
 581
 582 /* Register a SEC_MERGE section as a candidate for merging.  */
 583
 584 extern bfd_boolean _bfd_add_merge_section
 585   (bfd *, void **, asection *, void **);
 586
 587 /* Attempt to merge SEC_MERGE sections.  */
 588
 589 extern bfd_boolean _bfd_merge_sections
 590   (bfd *, struct bfd_link_info *, void *, void (*) (bfd *, asection *));
 591
 592 /* Write out a merged section.  */
 593
 594 extern bfd_boolean _bfd_write_merged_section
 595   (bfd *, asection *, void *);
 596
 597 /* Find an offset within a modified SEC_MERGE section.  */
 598
 599 extern bfd_vma _bfd_merged_section_offset
 600   (bfd *, asection **, void *, bfd_vma);
 601
 602 /* Create a string table.  */
 603 extern struct bfd_strtab_hash *_bfd_stringtab_init
 604   (void);
 605
 606 /* Create an XCOFF .debug section style string table.  */
 607 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init
 608   (void);
 609
 610 /* Free a string table.  */
 611 extern void _bfd_stringtab_free
 612   (struct bfd_strtab_hash *);
 613
 614 /* Get the size of a string table.  */
 615 extern bfd_size_type _bfd_stringtab_size
 616   (struct bfd_strtab_hash *);
 617
 618 /* Add a string to a string table.  */
 619 extern bfd_size_type _bfd_stringtab_add
 620   (struct bfd_strtab_hash *, const char *, bfd_boolean hash, bfd_boolean copy);
 621
 622 /* Write out a string table.  */
 623 extern bfd_boolean _bfd_stringtab_emit
 624   (bfd *, struct bfd_strtab_hash *);
 625
 626 /* Check that endianness of input and output file match.  */
 627 extern bfd_boolean _bfd_generic_verify_endian_match
 628   (bfd *, bfd *);
 629 \f
 630 /* Macros to tell if bfds are read or write enabled.
 631
 632    Note that bfds open for read may be scribbled into if the fd passed
 633    to bfd_fdopenr is actually open both for read and write
 634    simultaneously.  However an output bfd will never be open for
 635    read.  Therefore sometimes you want to check bfd_read_p or
 636    !bfd_read_p, and only sometimes bfd_write_p.
 637 */
 638
 639 #define bfd_read_p(abfd) \
 640   ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 641 #define bfd_write_p(abfd) \
 642   ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 643
 644 void bfd_assert
 645   (const char*,int);
 646
 647 #define BFD_ASSERT(x) \
 648   do { if (!(x)) bfd_assert(__FILE__,__LINE__); } while (0)
 649
 650 #define BFD_FAIL() \
 651   do { bfd_assert(__FILE__,__LINE__); } while (0)
 652
 653 extern void _bfd_abort
 654   (const char *, int, const char *) ATTRIBUTE_NORETURN;
 655
 656 /* if gcc >= 2.6, we can give a function name, too */
 657 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 658 #define __PRETTY_FUNCTION__  ((char *) NULL)
 659 #endif
 660
 661 #undef abort
 662 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 663
 664 /* Manipulate a system FILE but using BFD's "file_ptr", rather than
 665    the system "off_t" or "off64_t", as the offset.  */
 666 extern file_ptr real_ftell (FILE *file);
 667 extern int real_fseek (FILE *file, file_ptr offset, int whence);
 668 extern FILE *real_fopen (const char *filename, const char *modes);
 669
 670 /* List of supported target vectors, and the default vector (if
 671    bfd_default_vector[0] is NULL, there is no default).  */
 672 extern const bfd_target * const *bfd_target_vector;
 673 extern const bfd_target *bfd_default_vector[];
 674
 675 /* List of associated target vectors.  */
 676 extern const bfd_target * const *bfd_associated_vector;
 677
 678 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 679    other common header files.  */
 680
 681 #if defined(__STDC__) || defined(ALMOST_STDC)
 682 struct ecoff_find_line;
 683 #endif
 684
 685 extern bfd_boolean _bfd_ecoff_locate_line
 686   (bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 687    const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 688    const char **, const char **, unsigned int *);
 689 extern bfd_boolean _bfd_ecoff_get_accumulated_pdr
 690   (void *, bfd_byte *);
 691 extern bfd_boolean _bfd_ecoff_get_accumulated_sym
 692   (void *, bfd_byte *);
 693 extern bfd_boolean _bfd_ecoff_get_accumulated_ss
 694   (void *, bfd_byte *);
 695
 696 extern bfd_vma _bfd_get_gp_value
 697   (bfd *);
 698 extern void _bfd_set_gp_value
 699   (bfd *, bfd_vma);
 700
 701 /* Function shared by the COFF and ELF SH backends, which have no
 702    other common header files.  */
 703
 704 #ifndef _bfd_sh_align_load_span
 705 extern bfd_boolean _bfd_sh_align_load_span
 706   (bfd *, asection *, bfd_byte *,
 707    bfd_boolean (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
 708    void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bfd_boolean *);
 709 #endif
 710
 711 /* This is the shape of the elements inside the already_linked hash
 712    table. It maps a name onto a list of already_linked elements with
 713    the same name.  */
 714
 715 struct bfd_section_already_linked_hash_entry
 716 {
 717   struct bfd_hash_entry root;
 718   struct bfd_section_already_linked *entry;
 719 };
 720
 721 struct bfd_section_already_linked
 722 {
 723   struct bfd_section_already_linked *next;
 724   asection *sec;
 725 };
 726
 727 extern struct bfd_section_already_linked_hash_entry *
 728   bfd_section_already_linked_table_lookup (const char *);
 729 extern bfd_boolean bfd_section_already_linked_table_insert
 730   (struct bfd_section_already_linked_hash_entry *, asection *);
 731 extern void bfd_section_already_linked_table_traverse
 732   (bfd_boolean (*) (struct bfd_section_already_linked_hash_entry *,
 733                     void *), void *);
 734
 735 extern bfd_vma read_unsigned_leb128 (bfd *, bfd_byte *, unsigned int *);
 736 extern bfd_signed_vma read_signed_leb128 (bfd *, bfd_byte *, unsigned int *);
 737