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
   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 \
 255   ((asymbol *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
 256 #define _bfd_nosymbols_print_symbol \
 257   ((void (*) PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type))) bfd_void)
 258 #define _bfd_nosymbols_get_symbol_info \
 259   ((void (*) PARAMS ((bfd *, asymbol *, symbol_info *))) bfd_void)
 260 #define _bfd_nosymbols_bfd_is_local_label_name \
 261   ((boolean (*) PARAMS ((bfd *, const char *))) bfd_false)
 262 #define _bfd_nosymbols_get_lineno \
 263   ((alent *(*) PARAMS ((bfd *, asymbol *))) bfd_nullvoidptr)
 264 #define _bfd_nosymbols_find_nearest_line \
 265   ((boolean (*) \
 266     PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **, \
 267              const char **, unsigned int *))) \
 268    bfd_false)
 269 #define _bfd_nosymbols_bfd_make_debug_symbol \
 270   ((asymbol *(*) PARAMS ((bfd *, PTR, unsigned long))) bfd_nullvoidptr)
 271 #define _bfd_nosymbols_read_minisymbols \
 272   ((long (*) PARAMS ((bfd *, boolean, PTR *, unsigned int *))) _bfd_n1)
 273 #define _bfd_nosymbols_minisymbol_to_symbol \
 274   ((asymbol *(*) PARAMS ((bfd *, boolean, const PTR, asymbol *))) \
 275    bfd_nullvoidptr)
 276
 277 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 278    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 279
 280 #define _bfd_norelocs_get_reloc_upper_bound \
 281   ((long (*) PARAMS ((bfd *, asection *))) _bfd_n1)
 282 #define _bfd_norelocs_canonicalize_reloc \
 283   ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) _bfd_n1)
 284 #define _bfd_norelocs_bfd_reloc_type_lookup \
 285   ((reloc_howto_type *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) \
 286    bfd_nullvoidptr)
 287
 288 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 289    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 290
 291 #define _bfd_nowrite_set_arch_mach \
 292   ((boolean (*) PARAMS ((bfd *, enum bfd_architecture, unsigned long))) \
 293    bfd_false)
 294 #define _bfd_nowrite_set_section_contents \
 295   ((boolean (*) PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type))) \
 296    bfd_false)
 297
 298 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 299    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 300
 301 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 302 extern boolean _bfd_generic_set_section_contents
 303   PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
 304
 305 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 306    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 307
 308 #define _bfd_nolink_sizeof_headers ((int (*) PARAMS ((bfd *, boolean))) bfd_0)
 309 #define _bfd_nolink_bfd_get_relocated_section_contents \
 310   ((bfd_byte *(*) \
 311     PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, \
 312              bfd_byte *, boolean, asymbol **))) \
 313    bfd_nullvoidptr)
 314 #define _bfd_nolink_bfd_relax_section \
 315   ((boolean (*) \
 316     PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *))) \
 317    bfd_false)
 318 #define _bfd_nolink_bfd_gc_sections \
 319   ((boolean (*) \
 320     PARAMS ((bfd *, struct bfd_link_info *))) \
 321    bfd_false)
 322 #define _bfd_nolink_bfd_merge_sections \
 323   ((boolean (*) \
 324     PARAMS ((bfd *, struct bfd_link_info *))) \
 325    bfd_false)
 326 #define _bfd_nolink_bfd_link_hash_table_create \
 327   ((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
 328 #define _bfd_nolink_bfd_link_add_symbols \
 329   ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
 330 #define _bfd_nolink_bfd_final_link \
 331   ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
 332 #define _bfd_nolink_bfd_link_split_section \
 333   ((boolean (*) PARAMS ((bfd *, struct sec *))) bfd_false)
 334
 335 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 336    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 337    (_bfd_nodynamic).  */
 338
 339 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_n1
 340 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 341   ((long (*) PARAMS ((bfd *, asymbol **))) _bfd_n1)
 342 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_n1
 343 #define _bfd_nodynamic_canonicalize_dynamic_reloc \
 344   ((long (*) PARAMS ((bfd *, arelent **, asymbol **))) _bfd_n1)
 345 \f
 346 /* Generic routine to determine of the given symbol is a local
 347    label.  */
 348 extern boolean bfd_generic_is_local_label_name PARAMS ((bfd *, const char *));
 349
 350 /* Generic minisymbol routines.  */
 351 extern long _bfd_generic_read_minisymbols
 352   PARAMS ((bfd *, boolean, PTR *, unsigned int *));
 353 extern asymbol *_bfd_generic_minisymbol_to_symbol
 354   PARAMS ((bfd *, boolean, const PTR, asymbol *));
 355
 356 /* Find the nearest line using .stab/.stabstr sections.  */
 357 extern boolean _bfd_stab_section_find_nearest_line
 358   PARAMS ((bfd *, asymbol **, asection *, bfd_vma, boolean *, const char **,
 359            const char **, unsigned int *, PTR *));
 360
 361 /* Find the neaderst line using DWARF 1 debugging information.  */
 362 extern boolean _bfd_dwarf1_find_nearest_line
 363   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 364            const char **, unsigned int *));
 365
 366 /* Find the nearest line using DWARF 2 debugging information.  */
 367 extern boolean _bfd_dwarf2_find_nearest_line
 368   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 369            const char **, unsigned int *, unsigned int,
 370            PTR *));
 371
 372 /* Create a new section entry.  */
 373 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 374   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 375
 376 /* A routine to create entries for a bfd_link_hash_table.  */
 377 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 378   PARAMS ((struct bfd_hash_entry *entry,
 379            struct bfd_hash_table *table,
 380            const char *string));
 381
 382 /* Initialize a bfd_link_hash_table.  */
 383 extern boolean _bfd_link_hash_table_init
 384   PARAMS ((struct bfd_link_hash_table *, bfd *,
 385            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 386                                        struct bfd_hash_table *,
 387                                        const char *)));
 388
 389 /* Generic link hash table creation routine.  */
 390 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 391   PARAMS ((bfd *));
 392
 393 /* Generic add symbol routine.  */
 394 extern boolean _bfd_generic_link_add_symbols
 395   PARAMS ((bfd *, struct bfd_link_info *));
 396
 397 /* Generic add symbol routine.  This version is used by targets for
 398    which the linker must collect constructors and destructors by name,
 399    as the collect2 program does.  */
 400 extern boolean _bfd_generic_link_add_symbols_collect
 401   PARAMS ((bfd *, struct bfd_link_info *));
 402
 403 /* Generic archive add symbol routine.  */
 404 extern boolean _bfd_generic_link_add_archive_symbols
 405   PARAMS ((bfd *, struct bfd_link_info *,
 406            boolean (*checkfn) (bfd *, struct bfd_link_info *, boolean *)));
 407
 408
 409
 410 /* Forward declaration to avoid prototype errors.  */
 411 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 412
 413 /* Generic routine to add a single symbol.  */
 414 extern boolean _bfd_generic_link_add_one_symbol
 415   PARAMS ((struct bfd_link_info *, bfd *, const char *name, flagword,
 416            asection *, bfd_vma, const char *, boolean copy,
 417            boolean constructor, struct bfd_link_hash_entry **));
 418
 419 /* Generic link routine.  */
 420 extern boolean _bfd_generic_final_link
 421   PARAMS ((bfd *, struct bfd_link_info *));
 422
 423 extern boolean _bfd_generic_link_split_section
 424   PARAMS ((bfd *, struct sec *));
 425
 426 /* Generic reloc_link_order processing routine.  */
 427 extern boolean _bfd_generic_reloc_link_order
 428   PARAMS ((bfd *, struct bfd_link_info *, asection *,
 429            struct bfd_link_order *));
 430
 431 /* Default link order processing routine.  */
 432 extern boolean _bfd_default_link_order
 433   PARAMS ((bfd *, struct bfd_link_info *, asection *,
 434            struct bfd_link_order *));
 435
 436 /* Count the number of reloc entries in a link order list.  */
 437 extern unsigned int _bfd_count_link_order_relocs
 438   PARAMS ((struct bfd_link_order *));
 439
 440 /* Final link relocation routine.  */
 441 extern bfd_reloc_status_type _bfd_final_link_relocate
 442   PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
 443            bfd_vma, bfd_vma, bfd_vma));
 444
 445 /* Relocate a particular location by a howto and a value.  */
 446 extern bfd_reloc_status_type _bfd_relocate_contents
 447   PARAMS ((reloc_howto_type *, bfd *, bfd_vma, bfd_byte *));
 448
 449 /* Link stabs in sections in the first pass.  */
 450
 451 extern boolean _bfd_link_section_stabs
 452   PARAMS ((bfd *, PTR *, asection *, asection *, PTR *));
 453
 454 /* Eliminate stabs for discarded functions and symbols.  */
 455 extern boolean _bfd_discard_section_stabs
 456   PARAMS ((bfd *, asection *, PTR,
 457            boolean (*) (bfd_vma, PTR), PTR));
 458
 459 /* Write out the .stab section when linking stabs in sections.  */
 460
 461 extern boolean _bfd_write_section_stabs
 462   PARAMS ((bfd *, PTR *, asection *, PTR *, bfd_byte *));
 463
 464 /* Write out the .stabstr string table when linking stabs in sections.  */
 465
 466 extern boolean _bfd_write_stab_strings PARAMS ((bfd *, PTR *));
 467
 468 /* Find an offset within a .stab section when linking stabs in
 469    sections.  */
 470
 471 extern bfd_vma _bfd_stab_section_offset
 472   PARAMS ((bfd *, PTR *, asection *, PTR *, bfd_vma));
 473
 474 /* Attempt to merge a SEC_MERGE section.  */
 475
 476 extern boolean _bfd_merge_section
 477   PARAMS ((bfd *, PTR *, asection *, PTR *));
 478
 479 /* Attempt to merge SEC_MERGE sections.  */
 480
 481 extern boolean _bfd_merge_sections
 482   PARAMS ((bfd *, PTR));
 483
 484 /* Write out a merged section.  */
 485
 486 extern boolean _bfd_write_merged_section
 487   PARAMS ((bfd *, asection *, PTR));
 488
 489 /* Find an offset within a modified SEC_MERGE section.  */
 490
 491 extern bfd_vma _bfd_merged_section_offset
 492   PARAMS ((bfd *, asection **, PTR, bfd_vma, bfd_vma));
 493
 494 /* Create a string table.  */
 495 extern struct bfd_strtab_hash *_bfd_stringtab_init PARAMS ((void));
 496
 497 /* Create an XCOFF .debug section style string table.  */
 498 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init PARAMS ((void));
 499
 500 /* Free a string table.  */
 501 extern void _bfd_stringtab_free PARAMS ((struct bfd_strtab_hash *));
 502
 503 /* Get the size of a string table.  */
 504 extern bfd_size_type _bfd_stringtab_size PARAMS ((struct bfd_strtab_hash *));
 505
 506 /* Add a string to a string table.  */
 507 extern bfd_size_type _bfd_stringtab_add
 508   PARAMS ((struct bfd_strtab_hash *, const char *, boolean hash,
 509            boolean copy));
 510
 511 /* Write out a string table.  */
 512 extern boolean _bfd_stringtab_emit PARAMS ((bfd *, struct bfd_strtab_hash *));
 513
 514 /* Check that endianness of input and output file match.  */
 515 extern boolean _bfd_generic_verify_endian_match PARAMS ((bfd *, bfd *));
 516 \f
 517 /* Macros to tell if bfds are read or write enabled.
 518
 519    Note that bfds open for read may be scribbled into if the fd passed
 520    to bfd_fdopenr is actually open both for read and write
 521    simultaneously.  However an output bfd will never be open for
 522    read.  Therefore sometimes you want to check bfd_read_p or
 523    !bfd_read_p, and only sometimes bfd_write_p.
 524 */
 525
 526 #define bfd_read_p(abfd) ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 527 #define bfd_write_p(abfd) ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 528
 529 void    bfd_assert PARAMS ((const char*,int));
 530
 531 #define BFD_ASSERT(x) \
 532 { if (!(x)) bfd_assert(__FILE__,__LINE__); }
 533
 534 #define BFD_FAIL() \
 535 { bfd_assert(__FILE__,__LINE__); }
 536
 537 extern void _bfd_abort PARAMS ((const char *, int, const char *))
 538      ATTRIBUTE_NORETURN;
 539
 540 /* if gcc >= 2.6, we can give a function name, too */
 541 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 542 #define __PRETTY_FUNCTION__  ((char *) NULL)
 543 #endif
 544
 545 #undef abort
 546 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 547
 548 FILE *  bfd_cache_lookup_worker PARAMS ((bfd *));
 549
 550 extern bfd *bfd_last_cache;
 551
 552 /* List of supported target vectors, and the default vector (if
 553    bfd_default_vector[0] is NULL, there is no default).  */
 554 extern const bfd_target * const *bfd_target_vector;
 555 extern const bfd_target *bfd_default_vector[];
 556
 557 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 558    other common header files.  */
 559
 560 #if defined(__STDC__) || defined(ALMOST_STDC)
 561 struct ecoff_find_line;
 562 #endif
 563
 564 extern boolean _bfd_ecoff_locate_line
 565   PARAMS ((bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 566            const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 567            const char **, const char **, unsigned int *));
 568 extern boolean _bfd_ecoff_get_accumulated_pdr PARAMS ((PTR, bfd_byte *));
 569 extern boolean _bfd_ecoff_get_accumulated_sym PARAMS ((PTR, bfd_byte *));
 570 extern boolean _bfd_ecoff_get_accumulated_ss PARAMS ((PTR, bfd_byte *));
 571
 572 extern bfd_vma _bfd_get_gp_value PARAMS ((bfd *));
 573 extern void _bfd_set_gp_value PARAMS ((bfd *, bfd_vma));
 574
 575 /* Function shared by the COFF and ELF SH backends, which have no
 576    other common header files.  */
 577
 578 extern boolean _bfd_sh_align_load_span
 579   PARAMS ((bfd *, asection *, bfd_byte *,
 580            boolean (*) (bfd *, asection *, PTR, bfd_byte *, bfd_vma),
 581            PTR, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, boolean *));
 582
 583 /* And more follows */
 584