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