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_discard_group \
 326   ((boolean (*) \
 327     PARAMS ((bfd *, struct sec *))) \
 328    bfd_false)
 329 #define _bfd_nolink_bfd_link_hash_table_create \
 330   ((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
 331 #define _bfd_nolink_bfd_link_hash_table_free \
 332   ((void (*) PARAMS ((struct bfd_link_hash_table *))) bfd_void)
 333 #define _bfd_nolink_bfd_link_add_symbols \
 334   ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
 335 #define _bfd_nolink_bfd_link_just_syms \
 336   ((void (*) PARAMS ((asection *, struct bfd_link_info *))) bfd_void)
 337 #define _bfd_nolink_bfd_final_link \
 338   ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
 339 #define _bfd_nolink_bfd_link_split_section \
 340   ((boolean (*) PARAMS ((bfd *, struct sec *))) bfd_false)
 341
 342 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 343    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 344    (_bfd_nodynamic).  */
 345
 346 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_n1
 347 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 348   ((long (*) PARAMS ((bfd *, asymbol **))) _bfd_n1)
 349 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_n1
 350 #define _bfd_nodynamic_canonicalize_dynamic_reloc \
 351   ((long (*) PARAMS ((bfd *, arelent **, asymbol **))) _bfd_n1)
 352 \f
 353 /* Generic routine to determine of the given symbol is a local
 354    label.  */
 355 extern boolean bfd_generic_is_local_label_name PARAMS ((bfd *, const char *));
 356
 357 /* Generic minisymbol routines.  */
 358 extern long _bfd_generic_read_minisymbols
 359   PARAMS ((bfd *, boolean, PTR *, unsigned int *));
 360 extern asymbol *_bfd_generic_minisymbol_to_symbol
 361   PARAMS ((bfd *, boolean, const PTR, asymbol *));
 362
 363 /* Find the nearest line using .stab/.stabstr sections.  */
 364 extern boolean _bfd_stab_section_find_nearest_line
 365   PARAMS ((bfd *, asymbol **, asection *, bfd_vma, boolean *, const char **,
 366            const char **, unsigned int *, PTR *));
 367
 368 /* Find the neaderst line using DWARF 1 debugging information.  */
 369 extern boolean _bfd_dwarf1_find_nearest_line
 370   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 371            const char **, unsigned int *));
 372
 373 /* Find the nearest line using DWARF 2 debugging information.  */
 374 extern boolean _bfd_dwarf2_find_nearest_line
 375   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 376            const char **, unsigned int *, unsigned int,
 377            PTR *));
 378
 379 /* Create a new section entry.  */
 380 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 381   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 382
 383 /* A routine to create entries for a bfd_link_hash_table.  */
 384 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 385   PARAMS ((struct bfd_hash_entry *entry,
 386            struct bfd_hash_table *table,
 387            const char *string));
 388
 389 /* Initialize a bfd_link_hash_table.  */
 390 extern boolean _bfd_link_hash_table_init
 391   PARAMS ((struct bfd_link_hash_table *, bfd *,
 392            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 393                                        struct bfd_hash_table *,
 394                                        const char *)));
 395
 396 /* Generic link hash table creation routine.  */
 397 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 398   PARAMS ((bfd *));
 399
 400 /* Generic link hash table destruction routine.  */
 401 extern void _bfd_generic_link_hash_table_free
 402   PARAMS ((struct bfd_link_hash_table *));
 403
 404 /* Generic add symbol routine.  */
 405 extern boolean _bfd_generic_link_add_symbols
 406   PARAMS ((bfd *, struct bfd_link_info *));
 407
 408 /* Generic add symbol routine.  This version is used by targets for
 409    which the linker must collect constructors and destructors by name,
 410    as the collect2 program does.  */
 411 extern boolean _bfd_generic_link_add_symbols_collect
 412   PARAMS ((bfd *, struct bfd_link_info *));
 413
 414 /* Generic archive add symbol routine.  */
 415 extern boolean _bfd_generic_link_add_archive_symbols
 416   PARAMS ((bfd *, struct bfd_link_info *,
 417            boolean (*checkfn) (bfd *, struct bfd_link_info *, boolean *)));
 418
 419 /* Forward declaration to avoid prototype errors.  */
 420 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 421
 422 /* Generic routine to add a single symbol.  */
 423 extern boolean _bfd_generic_link_add_one_symbol
 424   PARAMS ((struct bfd_link_info *, bfd *, const char *name, flagword,
 425            asection *, bfd_vma, const char *, boolean copy,
 426            boolean constructor, struct bfd_link_hash_entry **));
 427
 428 /* Generic routine to mark section as supplying symbols only.  */
 429 extern void _bfd_generic_link_just_syms
 430   PARAMS ((asection *, struct bfd_link_info *));
 431
 432 /* Generic link routine.  */
 433 extern boolean _bfd_generic_final_link
 434   PARAMS ((bfd *, struct bfd_link_info *));
 435
 436 extern boolean _bfd_generic_link_split_section
 437   PARAMS ((bfd *, struct sec *));
 438
 439 /* Generic reloc_link_order processing routine.  */
 440 extern boolean _bfd_generic_reloc_link_order
 441   PARAMS ((bfd *, struct bfd_link_info *, asection *,
 442            struct bfd_link_order *));
 443
 444 /* Default link order processing routine.  */
 445 extern boolean _bfd_default_link_order
 446   PARAMS ((bfd *, struct bfd_link_info *, asection *,
 447            struct bfd_link_order *));
 448
 449 /* Count the number of reloc entries in a link order list.  */
 450 extern unsigned int _bfd_count_link_order_relocs
 451   PARAMS ((struct bfd_link_order *));
 452
 453 /* Final link relocation routine.  */
 454 extern bfd_reloc_status_type _bfd_final_link_relocate
 455   PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
 456            bfd_vma, bfd_vma, bfd_vma));
 457
 458 /* Relocate a particular location by a howto and a value.  */
 459 extern bfd_reloc_status_type _bfd_relocate_contents
 460   PARAMS ((reloc_howto_type *, bfd *, bfd_vma, bfd_byte *));
 461
 462 /* Link stabs in sections in the first pass.  */
 463
 464 extern boolean _bfd_link_section_stabs
 465   PARAMS ((bfd *, PTR *, asection *, asection *, PTR *));
 466
 467 /* Eliminate stabs for discarded functions and symbols.  */
 468 extern boolean _bfd_discard_section_stabs
 469   PARAMS ((bfd *, asection *, PTR,
 470            boolean (*) (bfd_vma, PTR), PTR));
 471
 472 /* Write out the .stab section when linking stabs in sections.  */
 473
 474 extern boolean _bfd_write_section_stabs
 475   PARAMS ((bfd *, PTR *, asection *, PTR *, bfd_byte *));
 476
 477 /* Write out the .stabstr string table when linking stabs in sections.  */
 478
 479 extern boolean _bfd_write_stab_strings PARAMS ((bfd *, PTR *));
 480
 481 /* Find an offset within a .stab section when linking stabs in
 482    sections.  */
 483
 484 extern bfd_vma _bfd_stab_section_offset
 485   PARAMS ((bfd *, PTR *, asection *, PTR *, bfd_vma));
 486
 487 /* Attempt to merge a SEC_MERGE section.  */
 488
 489 extern boolean _bfd_merge_section
 490   PARAMS ((bfd *, PTR *, asection *, PTR *));
 491
 492 /* Attempt to merge SEC_MERGE sections.  */
 493
 494 extern boolean _bfd_merge_sections
 495   PARAMS ((bfd *, PTR, void (*)(bfd *, asection *)));
 496
 497 /* Write out a merged section.  */
 498
 499 extern boolean _bfd_write_merged_section
 500   PARAMS ((bfd *, asection *, PTR));
 501
 502 /* Find an offset within a modified SEC_MERGE section.  */
 503
 504 extern bfd_vma _bfd_merged_section_offset
 505   PARAMS ((bfd *, asection **, PTR, bfd_vma, bfd_vma));
 506
 507 /* Create a string table.  */
 508 extern struct bfd_strtab_hash *_bfd_stringtab_init PARAMS ((void));
 509
 510 /* Create an XCOFF .debug section style string table.  */
 511 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init PARAMS ((void));
 512
 513 /* Free a string table.  */
 514 extern void _bfd_stringtab_free PARAMS ((struct bfd_strtab_hash *));
 515
 516 /* Get the size of a string table.  */
 517 extern bfd_size_type _bfd_stringtab_size PARAMS ((struct bfd_strtab_hash *));
 518
 519 /* Add a string to a string table.  */
 520 extern bfd_size_type _bfd_stringtab_add
 521   PARAMS ((struct bfd_strtab_hash *, const char *, boolean hash,
 522            boolean copy));
 523
 524 /* Write out a string table.  */
 525 extern boolean _bfd_stringtab_emit PARAMS ((bfd *, struct bfd_strtab_hash *));
 526
 527 /* Check that endianness of input and output file match.  */
 528 extern boolean _bfd_generic_verify_endian_match PARAMS ((bfd *, bfd *));
 529 \f
 530 /* Macros to tell if bfds are read or write enabled.
 531
 532    Note that bfds open for read may be scribbled into if the fd passed
 533    to bfd_fdopenr is actually open both for read and write
 534    simultaneously.  However an output bfd will never be open for
 535    read.  Therefore sometimes you want to check bfd_read_p or
 536    !bfd_read_p, and only sometimes bfd_write_p.
 537 */
 538
 539 #define bfd_read_p(abfd) ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 540 #define bfd_write_p(abfd) ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 541
 542 void    bfd_assert PARAMS ((const char*,int));
 543
 544 #define BFD_ASSERT(x) \
 545 { if (!(x)) bfd_assert(__FILE__,__LINE__); }
 546
 547 #define BFD_FAIL() \
 548 { bfd_assert(__FILE__,__LINE__); }
 549
 550 extern void _bfd_abort PARAMS ((const char *, int, const char *))
 551      ATTRIBUTE_NORETURN;
 552
 553 /* if gcc >= 2.6, we can give a function name, too */
 554 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 555 #define __PRETTY_FUNCTION__  ((char *) NULL)
 556 #endif
 557
 558 #undef abort
 559 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 560
 561 FILE *  bfd_cache_lookup_worker PARAMS ((bfd *));
 562
 563 extern bfd *bfd_last_cache;
 564
 565 /* List of supported target vectors, and the default vector (if
 566    bfd_default_vector[0] is NULL, there is no default).  */
 567 extern const bfd_target * const *bfd_target_vector;
 568 extern const bfd_target *bfd_default_vector[];
 569
 570 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 571    other common header files.  */
 572
 573 #if defined(__STDC__) || defined(ALMOST_STDC)
 574 struct ecoff_find_line;
 575 #endif
 576
 577 extern boolean _bfd_ecoff_locate_line
 578   PARAMS ((bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 579            const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 580            const char **, const char **, unsigned int *));
 581 extern boolean _bfd_ecoff_get_accumulated_pdr PARAMS ((PTR, bfd_byte *));
 582 extern boolean _bfd_ecoff_get_accumulated_sym PARAMS ((PTR, bfd_byte *));
 583 extern boolean _bfd_ecoff_get_accumulated_ss PARAMS ((PTR, bfd_byte *));
 584
 585 extern bfd_vma _bfd_get_gp_value PARAMS ((bfd *));
 586 extern void _bfd_set_gp_value PARAMS ((bfd *, bfd_vma));
 587
 588 /* Function shared by the COFF and ELF SH backends, which have no
 589    other common header files.  */
 590
 591 extern boolean _bfd_sh_align_load_span
 592   PARAMS ((bfd *, asection *, bfd_byte *,
 593            boolean (*) (bfd *, asection *, PTR, bfd_byte *, bfd_vma),
 594            PTR, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, boolean *));
 595