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
  87   PARAMS ((bfd_size_type));
  88 extern PTR bfd_realloc
  89   PARAMS ((PTR, bfd_size_type));
  90 extern PTR bfd_zmalloc
  91   PARAMS ((bfd_size_type));
  92
  93 extern bfd_error_handler_type _bfd_error_handler;
  94
  95 /* These routines allocate and free things on the BFD's objalloc.  */
  96
  97 extern PTR bfd_alloc
  98   PARAMS ((bfd *, bfd_size_type));
  99 extern PTR bfd_zalloc
 100   PARAMS ((bfd *, bfd_size_type));
 101 extern void bfd_release
 102   PARAMS ((bfd *, PTR));
 103
 104 bfd * _bfd_create_empty_archive_element_shell
 105   PARAMS ((bfd *obfd));
 106 bfd * _bfd_look_for_bfd_in_cache
 107   PARAMS ((bfd *, file_ptr));
 108 bfd_boolean _bfd_add_bfd_to_archive_cache
 109   PARAMS ((bfd *, file_ptr, bfd *));
 110 bfd_boolean _bfd_generic_mkarchive
 111   PARAMS ((bfd *abfd));
 112 const bfd_target *bfd_generic_archive_p
 113   PARAMS ((bfd *abfd));
 114 bfd_boolean bfd_slurp_armap
 115   PARAMS ((bfd *abfd));
 116 bfd_boolean bfd_slurp_bsd_armap_f2
 117   PARAMS ((bfd *abfd));
 118 #define bfd_slurp_bsd_armap bfd_slurp_armap
 119 #define bfd_slurp_coff_armap bfd_slurp_armap
 120 bfd_boolean _bfd_slurp_extended_name_table
 121   PARAMS ((bfd *abfd));
 122 extern bfd_boolean _bfd_construct_extended_name_table
 123   PARAMS ((bfd *, bfd_boolean, char **, bfd_size_type *));
 124 bfd_boolean _bfd_write_archive_contents
 125   PARAMS ((bfd *abfd));
 126 bfd_boolean _bfd_compute_and_write_armap
 127   PARAMS ((bfd *, unsigned int elength));
 128 bfd *_bfd_get_elt_at_filepos
 129   PARAMS ((bfd *archive, file_ptr filepos));
 130 extern bfd *_bfd_generic_get_elt_at_index
 131   PARAMS ((bfd *, symindex));
 132 bfd * _bfd_new_bfd
 133   PARAMS ((void));
 134 void _bfd_delete_bfd
 135   PARAMS ((bfd *));
 136
 137 bfd_boolean bfd_false
 138   PARAMS ((bfd *ignore));
 139 bfd_boolean bfd_true
 140   PARAMS ((bfd *ignore));
 141 PTR bfd_nullvoidptr
 142   PARAMS ((bfd *ignore));
 143 int bfd_0
 144   PARAMS ((bfd *ignore));
 145 unsigned int bfd_0u
 146   PARAMS ((bfd *ignore));
 147 long bfd_0l
 148   PARAMS ((bfd *ignore));
 149 long _bfd_n1
 150   PARAMS ((bfd *ignore));
 151 void bfd_void
 152   PARAMS ((bfd *ignore));
 153
 154 bfd *_bfd_new_bfd_contained_in
 155   PARAMS ((bfd *));
 156 const bfd_target *_bfd_dummy_target
 157   PARAMS ((bfd *abfd));
 158
 159 void bfd_dont_truncate_arname
 160   PARAMS ((bfd *abfd, const char *filename, char *hdr));
 161 void bfd_bsd_truncate_arname
 162   PARAMS ((bfd *abfd, const char *filename, char *hdr));
 163 void bfd_gnu_truncate_arname
 164   PARAMS ((bfd *abfd, const char *filename, char *hdr));
 165
 166 bfd_boolean bsd_write_armap
 167   PARAMS ((bfd *arch, unsigned int elength, struct orl *map,
 168            unsigned int orl_count, int stridx));
 169
 170 bfd_boolean coff_write_armap
 171   PARAMS ((bfd *arch, unsigned int elength, struct orl *map,
 172            unsigned int orl_count, int stridx));
 173
 174 extern PTR _bfd_generic_read_ar_hdr
 175   PARAMS ((bfd *));
 176
 177 extern PTR _bfd_generic_read_ar_hdr_mag
 178   PARAMS ((bfd *, const char *));
 179
 180 bfd * bfd_generic_openr_next_archived_file
 181   PARAMS ((bfd *archive, bfd *last_file));
 182
 183 int bfd_generic_stat_arch_elt
 184   PARAMS ((bfd *, struct stat *));
 185
 186 #define _bfd_read_ar_hdr(abfd) \
 187   BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
 188 \f
 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 (*) PARAMS ((bfd *, asection *))) bfd_true)
 196 extern bfd_boolean _bfd_generic_get_section_contents
 197   PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
 198 extern bfd_boolean _bfd_generic_get_section_contents_in_window
 199   PARAMS ((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 (*) PARAMS ((bfd *, bfd *))) bfd_true)
 206 #define _bfd_generic_bfd_merge_private_bfd_data \
 207   ((bfd_boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
 208 #define _bfd_generic_bfd_set_private_flags \
 209   ((bfd_boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
 210 #define _bfd_generic_bfd_copy_private_section_data \
 211   ((bfd_boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
 212 #define _bfd_generic_bfd_copy_private_symbol_data \
 213   ((bfd_boolean (*) PARAMS ((bfd *, asymbol *, bfd *, asymbol *))) bfd_true)
 214 #define _bfd_generic_bfd_print_private_bfd_data \
 215   ((bfd_boolean (*) PARAMS ((bfd *, PTR))) 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
 220 extern char *_bfd_nocore_core_file_failing_command
 221   PARAMS ((bfd *));
 222 extern int _bfd_nocore_core_file_failing_signal
 223   PARAMS ((bfd *));
 224 extern bfd_boolean _bfd_nocore_core_file_matches_executable_p
 225   PARAMS ((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 (*) \
 234     PARAMS ((bfd *, char **, bfd_size_type *, const char **))) \
 235    bfd_false)
 236 #define _bfd_noarchive_truncate_arname \
 237   ((void (*) PARAMS ((bfd *, const char *, char *))) bfd_void)
 238 #define _bfd_noarchive_write_armap \
 239   ((bfd_boolean (*) \
 240     PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int))) \
 241    bfd_false)
 242 #define _bfd_noarchive_read_ar_hdr bfd_nullvoidptr
 243 #define _bfd_noarchive_openr_next_archived_file \
 244   ((bfd *(*) PARAMS ((bfd *, bfd *))) bfd_nullvoidptr)
 245 #define _bfd_noarchive_get_elt_at_index \
 246   ((bfd *(*) PARAMS ((bfd *, symindex))) bfd_nullvoidptr)
 247 #define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
 248 #define _bfd_noarchive_update_armap_timestamp bfd_false
 249
 250 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
 251    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
 252
 253 #define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
 254 #define _bfd_archive_bsd_slurp_extended_name_table \
 255   _bfd_slurp_extended_name_table
 256 extern bfd_boolean _bfd_archive_bsd_construct_extended_name_table
 257   PARAMS ((bfd *, char **, bfd_size_type *, const char **));
 258 #define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
 259 #define _bfd_archive_bsd_write_armap bsd_write_armap
 260 #define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
 261 #define _bfd_archive_bsd_openr_next_archived_file \
 262   bfd_generic_openr_next_archived_file
 263 #define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
 264 #define _bfd_archive_bsd_generic_stat_arch_elt \
 265   bfd_generic_stat_arch_elt
 266 extern bfd_boolean _bfd_archive_bsd_update_armap_timestamp
 267   PARAMS ((bfd *));
 268
 269 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
 270    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
 271
 272 #define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
 273 #define _bfd_archive_coff_slurp_extended_name_table \
 274   _bfd_slurp_extended_name_table
 275 extern bfd_boolean _bfd_archive_coff_construct_extended_name_table
 276   PARAMS ((bfd *, char **, bfd_size_type *, const char **));
 277 #define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
 278 #define _bfd_archive_coff_write_armap coff_write_armap
 279 #define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
 280 #define _bfd_archive_coff_openr_next_archived_file \
 281   bfd_generic_openr_next_archived_file
 282 #define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
 283 #define _bfd_archive_coff_generic_stat_arch_elt \
 284   bfd_generic_stat_arch_elt
 285 #define _bfd_archive_coff_update_armap_timestamp bfd_true
 286
 287 /* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
 288    support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
 289
 290 #define _bfd_nosymbols_get_symtab_upper_bound _bfd_n1
 291 #define _bfd_nosymbols_get_symtab \
 292   ((long (*) PARAMS ((bfd *, asymbol **))) _bfd_n1)
 293 #define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
 294 #define _bfd_nosymbols_print_symbol \
 295   ((void (*) PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type))) bfd_void)
 296 #define _bfd_nosymbols_get_symbol_info \
 297   ((void (*) PARAMS ((bfd *, asymbol *, symbol_info *))) bfd_void)
 298 #define _bfd_nosymbols_bfd_is_local_label_name \
 299   ((bfd_boolean (*) PARAMS ((bfd *, const char *))) bfd_false)
 300 #define _bfd_nosymbols_get_lineno \
 301   ((alent *(*) PARAMS ((bfd *, asymbol *))) bfd_nullvoidptr)
 302 #define _bfd_nosymbols_find_nearest_line \
 303   ((bfd_boolean (*) \
 304     PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **, \
 305              const char **, unsigned int *))) \
 306    bfd_false)
 307 #define _bfd_nosymbols_bfd_make_debug_symbol \
 308   ((asymbol *(*) PARAMS ((bfd *, PTR, unsigned long))) bfd_nullvoidptr)
 309 #define _bfd_nosymbols_read_minisymbols \
 310   ((long (*) PARAMS ((bfd *, bfd_boolean, PTR *, unsigned int *))) _bfd_n1)
 311 #define _bfd_nosymbols_minisymbol_to_symbol \
 312   ((asymbol *(*) PARAMS ((bfd *, bfd_boolean, const PTR, asymbol *))) \
 313    bfd_nullvoidptr)
 314
 315 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 316    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 317
 318 #define _bfd_norelocs_get_reloc_upper_bound \
 319   ((long (*) PARAMS ((bfd *, asection *))) _bfd_n1)
 320 #define _bfd_norelocs_canonicalize_reloc \
 321   ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) _bfd_n1)
 322 #define _bfd_norelocs_bfd_reloc_type_lookup \
 323   ((reloc_howto_type *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) \
 324    bfd_nullvoidptr)
 325
 326 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 327    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 328
 329 #define _bfd_nowrite_set_arch_mach \
 330   ((bfd_boolean (*) PARAMS ((bfd *, enum bfd_architecture, unsigned long))) \
 331    bfd_false)
 332 #define _bfd_nowrite_set_section_contents \
 333   ((bfd_boolean (*) \
 334    PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type))) \
 335    bfd_false)
 336
 337 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 338    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 339
 340 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 341 extern bfd_boolean _bfd_generic_set_section_contents
 342   PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
 343
 344 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 345    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 346
 347 #define _bfd_nolink_sizeof_headers ((int (*) PARAMS ((bfd *, bfd_boolean))) bfd_0)
 348 #define _bfd_nolink_bfd_get_relocated_section_contents \
 349   ((bfd_byte *(*) \
 350     PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, \
 351              bfd_byte *, bfd_boolean, asymbol **))) \
 352    bfd_nullvoidptr)
 353 #define _bfd_nolink_bfd_relax_section \
 354   ((bfd_boolean (*) \
 355     PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *))) \
 356    bfd_false)
 357 #define _bfd_nolink_bfd_gc_sections \
 358   ((bfd_boolean (*) \
 359     PARAMS ((bfd *, struct bfd_link_info *))) \
 360    bfd_false)
 361 #define _bfd_nolink_bfd_merge_sections \
 362   ((bfd_boolean (*) \
 363     PARAMS ((bfd *, struct bfd_link_info *))) \
 364    bfd_false)
 365 #define _bfd_nolink_bfd_discard_group \
 366   ((bfd_boolean (*) \
 367     PARAMS ((bfd *, struct sec *))) \
 368    bfd_false)
 369 #define _bfd_nolink_bfd_link_hash_table_create \
 370   ((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
 371 #define _bfd_nolink_bfd_link_hash_table_free \
 372   ((void (*) PARAMS ((struct bfd_link_hash_table *))) bfd_void)
 373 #define _bfd_nolink_bfd_link_add_symbols \
 374   ((bfd_boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
 375 #define _bfd_nolink_bfd_link_just_syms \
 376   ((void (*) PARAMS ((asection *, struct bfd_link_info *))) bfd_void)
 377 #define _bfd_nolink_bfd_final_link \
 378   ((bfd_boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
 379 #define _bfd_nolink_bfd_link_split_section \
 380   ((bfd_boolean (*) PARAMS ((bfd *, struct sec *))) bfd_false)
 381
 382 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 383    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 384    (_bfd_nodynamic).  */
 385
 386 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_n1
 387 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 388   ((long (*) PARAMS ((bfd *, asymbol **))) _bfd_n1)
 389 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_n1
 390 #define _bfd_nodynamic_canonicalize_dynamic_reloc \
 391   ((long (*) PARAMS ((bfd *, arelent **, asymbol **))) _bfd_n1)
 392 \f
 393 /* Generic routine to determine of the given symbol is a local
 394    label.  */
 395 extern bfd_boolean bfd_generic_is_local_label_name
 396   PARAMS ((bfd *, const char *));
 397
 398 /* Generic minisymbol routines.  */
 399 extern long _bfd_generic_read_minisymbols
 400   PARAMS ((bfd *, bfd_boolean, PTR *, unsigned int *));
 401 extern asymbol *_bfd_generic_minisymbol_to_symbol
 402   PARAMS ((bfd *, bfd_boolean, const PTR, asymbol *));
 403
 404 /* Find the nearest line using .stab/.stabstr sections.  */
 405 extern bfd_boolean _bfd_stab_section_find_nearest_line
 406   PARAMS ((bfd *, asymbol **, asection *, bfd_vma, bfd_boolean *,
 407            const char **, const char **, unsigned int *, PTR *));
 408
 409 /* Find the neaderst line using DWARF 1 debugging information.  */
 410 extern bfd_boolean _bfd_dwarf1_find_nearest_line
 411   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 412            const char **, unsigned int *));
 413
 414 /* Find the nearest line using DWARF 2 debugging information.  */
 415 extern bfd_boolean _bfd_dwarf2_find_nearest_line
 416   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 417            const char **, unsigned int *, unsigned int,
 418            PTR *));
 419
 420 /* Create a new section entry.  */
 421 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 422   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 423
 424 /* A routine to create entries for a bfd_link_hash_table.  */
 425 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 426   PARAMS ((struct bfd_hash_entry *entry,
 427            struct bfd_hash_table *table,
 428            const char *string));
 429
 430 /* Initialize a bfd_link_hash_table.  */
 431 extern bfd_boolean _bfd_link_hash_table_init
 432   PARAMS ((struct bfd_link_hash_table *, bfd *,
 433            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 434                                        struct bfd_hash_table *,
 435                                        const char *)));
 436
 437 /* Generic link hash table creation routine.  */
 438 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 439   PARAMS ((bfd *));
 440
 441 /* Generic link hash table destruction routine.  */
 442 extern void _bfd_generic_link_hash_table_free
 443   PARAMS ((struct bfd_link_hash_table *));
 444
 445 /* Generic add symbol routine.  */
 446 extern bfd_boolean _bfd_generic_link_add_symbols
 447   PARAMS ((bfd *, struct bfd_link_info *));
 448
 449 /* Generic add symbol routine.  This version is used by targets for
 450    which the linker must collect constructors and destructors by name,
 451    as the collect2 program does.  */
 452 extern bfd_boolean _bfd_generic_link_add_symbols_collect
 453   PARAMS ((bfd *, struct bfd_link_info *));
 454
 455 /* Generic archive add symbol routine.  */
 456 extern bfd_boolean _bfd_generic_link_add_archive_symbols
 457   PARAMS ((bfd *, struct bfd_link_info *,
 458            bfd_boolean (*) (bfd *, struct bfd_link_info *, bfd_boolean *)));
 459
 460 /* Forward declaration to avoid prototype errors.  */
 461 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 462
 463 /* Generic routine to add a single symbol.  */
 464 extern bfd_boolean _bfd_generic_link_add_one_symbol
 465   PARAMS ((struct bfd_link_info *, bfd *, const char *name, flagword,
 466            asection *, bfd_vma, const char *, bfd_boolean copy,
 467            bfd_boolean constructor, struct bfd_link_hash_entry **));
 468
 469 /* Generic routine to mark section as supplying symbols only.  */
 470 extern void _bfd_generic_link_just_syms
 471   PARAMS ((asection *, struct bfd_link_info *));
 472
 473 /* Generic link routine.  */
 474 extern bfd_boolean _bfd_generic_final_link
 475   PARAMS ((bfd *, struct bfd_link_info *));
 476
 477 extern bfd_boolean _bfd_generic_link_split_section
 478   PARAMS ((bfd *, struct sec *));
 479
 480 /* Generic reloc_link_order processing routine.  */
 481 extern bfd_boolean _bfd_generic_reloc_link_order
 482   PARAMS ((bfd *, struct bfd_link_info *, asection *,
 483            struct bfd_link_order *));
 484
 485 /* Default link order processing routine.  */
 486 extern bfd_boolean _bfd_default_link_order
 487   PARAMS ((bfd *, struct bfd_link_info *, asection *,
 488            struct bfd_link_order *));
 489
 490 /* Count the number of reloc entries in a link order list.  */
 491 extern unsigned int _bfd_count_link_order_relocs
 492   PARAMS ((struct bfd_link_order *));
 493
 494 /* Final link relocation routine.  */
 495 extern bfd_reloc_status_type _bfd_final_link_relocate
 496   PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
 497            bfd_vma, bfd_vma, bfd_vma));
 498
 499 /* Relocate a particular location by a howto and a value.  */
 500 extern bfd_reloc_status_type _bfd_relocate_contents
 501   PARAMS ((reloc_howto_type *, bfd *, bfd_vma, bfd_byte *));
 502
 503 /* Link stabs in sections in the first pass.  */
 504
 505 extern bfd_boolean _bfd_link_section_stabs
 506   PARAMS ((bfd *, PTR *, asection *, asection *, PTR *));
 507
 508 /* Eliminate stabs for discarded functions and symbols.  */
 509 extern bfd_boolean _bfd_discard_section_stabs
 510   PARAMS ((bfd *, asection *, PTR,
 511            bfd_boolean (*) (bfd_vma, PTR), PTR));
 512
 513 /* Write out the .stab section when linking stabs in sections.  */
 514
 515 extern bfd_boolean _bfd_write_section_stabs
 516   PARAMS ((bfd *, PTR *, asection *, PTR *, bfd_byte *));
 517
 518 /* Write out the .stabstr string table when linking stabs in sections.  */
 519
 520 extern bfd_boolean _bfd_write_stab_strings
 521   PARAMS ((bfd *, PTR *));
 522
 523 /* Find an offset within a .stab section when linking stabs in
 524    sections.  */
 525
 526 extern bfd_vma _bfd_stab_section_offset
 527   PARAMS ((bfd *, PTR *, asection *, PTR *, bfd_vma));
 528
 529 /* Attempt to merge a SEC_MERGE section.  */
 530
 531 extern bfd_boolean _bfd_merge_section
 532   PARAMS ((bfd *, PTR *, asection *, PTR *));
 533
 534 /* Attempt to merge SEC_MERGE sections.  */
 535
 536 extern bfd_boolean _bfd_merge_sections
 537   PARAMS ((bfd *, PTR, void (*)(bfd *, asection *)));
 538
 539 /* Write out a merged section.  */
 540
 541 extern bfd_boolean _bfd_write_merged_section
 542   PARAMS ((bfd *, asection *, PTR));
 543
 544 /* Find an offset within a modified SEC_MERGE section.  */
 545
 546 extern bfd_vma _bfd_merged_section_offset
 547   PARAMS ((bfd *, asection **, PTR, bfd_vma, bfd_vma));
 548
 549 /* Create a string table.  */
 550 extern struct bfd_strtab_hash *_bfd_stringtab_init
 551   PARAMS ((void));
 552
 553 /* Create an XCOFF .debug section style string table.  */
 554 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init
 555   PARAMS ((void));
 556
 557 /* Free a string table.  */
 558 extern void _bfd_stringtab_free
 559   PARAMS ((struct bfd_strtab_hash *));
 560
 561 /* Get the size of a string table.  */
 562 extern bfd_size_type _bfd_stringtab_size
 563   PARAMS ((struct bfd_strtab_hash *));
 564
 565 /* Add a string to a string table.  */
 566 extern bfd_size_type _bfd_stringtab_add
 567   PARAMS ((struct bfd_strtab_hash *, const char *, bfd_boolean hash,
 568            bfd_boolean copy));
 569
 570 /* Write out a string table.  */
 571 extern bfd_boolean _bfd_stringtab_emit
 572   PARAMS ((bfd *, struct bfd_strtab_hash *));
 573
 574 /* Check that endianness of input and output file match.  */
 575 extern bfd_boolean _bfd_generic_verify_endian_match
 576   PARAMS ((bfd *, bfd *));
 577 \f
 578 /* Macros to tell if bfds are read or write enabled.
 579
 580    Note that bfds open for read may be scribbled into if the fd passed
 581    to bfd_fdopenr is actually open both for read and write
 582    simultaneously.  However an output bfd will never be open for
 583    read.  Therefore sometimes you want to check bfd_read_p or
 584    !bfd_read_p, and only sometimes bfd_write_p.
 585 */
 586
 587 #define bfd_read_p(abfd) ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 588 #define bfd_write_p(abfd) ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 589
 590 void bfd_assert
 591   PARAMS ((const char*,int));
 592
 593 #define BFD_ASSERT(x) \
 594 { if (!(x)) bfd_assert(__FILE__,__LINE__); }
 595
 596 #define BFD_FAIL() \
 597 { bfd_assert(__FILE__,__LINE__); }
 598
 599 extern void _bfd_abort
 600   PARAMS ((const char *, int, const char *)) ATTRIBUTE_NORETURN;
 601
 602 /* if gcc >= 2.6, we can give a function name, too */
 603 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 604 #define __PRETTY_FUNCTION__  ((char *) NULL)
 605 #endif
 606
 607 #undef abort
 608 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 609
 610 FILE *  bfd_cache_lookup_worker
 611   PARAMS ((bfd *));
 612
 613 extern bfd *bfd_last_cache;
 614
 615 /* List of supported target vectors, and the default vector (if
 616    bfd_default_vector[0] is NULL, there is no default).  */
 617 extern const bfd_target * const *bfd_target_vector;
 618 extern const bfd_target *bfd_default_vector[];
 619
 620 /* List of associated target vectors.  */
 621 extern const bfd_target * const *bfd_associated_vector;
 622
 623 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 624    other common header files.  */
 625
 626 #if defined(__STDC__) || defined(ALMOST_STDC)
 627 struct ecoff_find_line;
 628 #endif
 629
 630 extern bfd_boolean _bfd_ecoff_locate_line
 631   PARAMS ((bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 632            const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 633            const char **, const char **, unsigned int *));
 634 extern bfd_boolean _bfd_ecoff_get_accumulated_pdr
 635   PARAMS ((PTR, bfd_byte *));
 636 extern bfd_boolean _bfd_ecoff_get_accumulated_sym
 637   PARAMS ((PTR, bfd_byte *));
 638 extern bfd_boolean _bfd_ecoff_get_accumulated_ss
 639   PARAMS ((PTR, bfd_byte *));
 640
 641 extern bfd_vma _bfd_get_gp_value
 642   PARAMS ((bfd *));
 643 extern void _bfd_set_gp_value
 644   PARAMS ((bfd *, bfd_vma));
 645
 646 /* Function shared by the COFF and ELF SH backends, which have no
 647    other common header files.  */
 648
 649 extern bfd_boolean _bfd_sh_align_load_span
 650   PARAMS ((bfd *, asection *, bfd_byte *,
 651            bfd_boolean (*) (bfd *, asection *, PTR, bfd_byte *, bfd_vma),
 652            PTR, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bfd_boolean *));
 653