bfd/libbfd-in.h

   1 /* libbfd.h -- Declarations used by bfd library *implementation*.
   2    (This include file is not for users of the library.)
   3
   4    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   5    1999, 2000, 2001, 2002, 2003, 2004, 2005
   6    Free Software Foundation, Inc.
   7
   8    Written by Cygnus Support.
   9
  10 This file is part of BFD, the Binary File Descriptor library.
  11
  12 This program is free software; you can redistribute it and/or modify
  13 it under the terms of the GNU General Public License as published by
  14 the Free Software Foundation; either version 2 of the License, or
  15 (at your option) any later version.
  16
  17 This program is distributed in the hope that it will be useful,
  18 but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 GNU General Public License for more details.
  21
  22 You should have received a copy of the GNU General Public License
  23 along with this program; if not, write to the Free Software
  24 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  25
  26 #include "hashtab.h"
  27
  28 /* Align an address upward to a boundary, expressed as a number of bytes.
  29    E.g. align to an 8-byte boundary with argument of 8.  Take care never
  30    to wrap around if the address is within boundary-1 of the end of the
  31    address space.  */
  32 #define BFD_ALIGN(this, boundary)                                         \
  33   ((((bfd_vma) (this) + (boundary) - 1) >= (bfd_vma) (this))              \
  34    ? (((bfd_vma) (this) + ((boundary) - 1)) & ~ (bfd_vma) ((boundary)-1)) \
  35    : ~ (bfd_vma) 0)
  36
  37 /* If you want to read and write large blocks, you might want to do it
  38    in quanta of this amount */
  39 #define DEFAULT_BUFFERSIZE 8192
  40
  41 /* Set a tdata field.  Can't use the other macros for this, since they
  42    do casts, and casting to the left of assignment isn't portable.  */
  43 #define set_tdata(bfd, v) ((bfd)->tdata.any = (v))
  44
  45 /* If BFD_IN_MEMORY is set for a BFD, then the iostream fields points
  46    to an instance of this structure.  */
  47
  48 struct bfd_in_memory
  49 {
  50   /* Size of buffer.  */
  51   bfd_size_type size;
  52   /* Buffer holding contents of BFD.  */
  53   bfd_byte *buffer;
  54 };
  55
  56 /* tdata for an archive.  For an input archive, cache
  57    needs to be free()'d.  For an output archive, symdefs do.  */
  58
  59 struct artdata {
  60   file_ptr first_file_filepos;
  61   /* Speed up searching the armap */
  62   htab_t cache;
  63   bfd *archive_head;            /* Only interesting in output routines */
  64   carsym *symdefs;              /* the symdef entries */
  65   symindex symdef_count;        /* how many there are */
  66   char *extended_names;         /* clever intel extension */
  67   bfd_size_type extended_names_size; /* Size of extended names */
  68   /* when more compilers are standard C, this can be a time_t */
  69   long  armap_timestamp;        /* Timestamp value written into armap.
  70                                    This is used for BSD archives to check
  71                                    that the timestamp is recent enough
  72                                    for the BSD linker to not complain,
  73                                    just before we finish writing an
  74                                    archive.  */
  75   file_ptr armap_datepos;       /* Position within archive to seek to
  76                                    rewrite the date field.  */
  77   void *tdata;                  /* Backend specific information.  */
  78 };
  79
  80 #define bfd_ardata(bfd) ((bfd)->tdata.aout_ar_data)
  81
  82 /* Goes in bfd's arelt_data slot */
  83 struct areltdata {
  84   char * arch_header;           /* it's actually a string */
  85   unsigned int parsed_size;     /* octets of filesize not including ar_hdr */
  86   char *filename;               /* null-terminated */
  87 };
  88
  89 #define arelt_size(bfd) (((struct areltdata *)((bfd)->arelt_data))->parsed_size)
  90
  91 extern void *bfd_malloc
  92   (bfd_size_type);
  93 extern void *bfd_realloc
  94   (void *, bfd_size_type);
  95 extern void *bfd_zmalloc
  96   (bfd_size_type);
  97 extern void *bfd_malloc2
  98   (bfd_size_type, bfd_size_type);
  99 extern void *bfd_realloc2
 100   (void *, bfd_size_type, bfd_size_type);
 101 extern void *bfd_zmalloc2
 102   (bfd_size_type, bfd_size_type);
 103
 104 extern void _bfd_default_error_handler (const char *s, ...);
 105 extern bfd_error_handler_type _bfd_error_handler;
 106
 107 /* These routines allocate and free things on the BFD's objalloc.  */
 108
 109 extern void *bfd_alloc
 110   (bfd *, bfd_size_type);
 111 extern void *bfd_zalloc
 112   (bfd *, bfd_size_type);
 113 extern void *bfd_alloc2
 114   (bfd *, bfd_size_type, bfd_size_type);
 115 extern void *bfd_zalloc2
 116   (bfd *, bfd_size_type, bfd_size_type);
 117 extern void bfd_release
 118   (bfd *, void *);
 119
 120 bfd * _bfd_create_empty_archive_element_shell
 121   (bfd *obfd);
 122 bfd * _bfd_look_for_bfd_in_cache
 123   (bfd *, file_ptr);
 124 bfd_boolean _bfd_add_bfd_to_archive_cache
 125   (bfd *, file_ptr, bfd *);
 126 bfd_boolean _bfd_generic_mkarchive
 127   (bfd *abfd);
 128 const bfd_target *bfd_generic_archive_p
 129   (bfd *abfd);
 130 bfd_boolean bfd_slurp_armap
 131   (bfd *abfd);
 132 bfd_boolean bfd_slurp_bsd_armap_f2
 133   (bfd *abfd);
 134 #define bfd_slurp_bsd_armap bfd_slurp_armap
 135 #define bfd_slurp_coff_armap bfd_slurp_armap
 136 bfd_boolean _bfd_slurp_extended_name_table
 137   (bfd *abfd);
 138 extern bfd_boolean _bfd_construct_extended_name_table
 139   (bfd *, bfd_boolean, char **, bfd_size_type *);
 140 bfd_boolean _bfd_write_archive_contents
 141   (bfd *abfd);
 142 bfd_boolean _bfd_compute_and_write_armap
 143   (bfd *, unsigned int elength);
 144 bfd *_bfd_get_elt_at_filepos
 145   (bfd *archive, file_ptr filepos);
 146 extern bfd *_bfd_generic_get_elt_at_index
 147   (bfd *, symindex);
 148 bfd * _bfd_new_bfd
 149   (void);
 150 void _bfd_delete_bfd
 151   (bfd *);
 152
 153 bfd_boolean bfd_false
 154   (bfd *ignore);
 155 bfd_boolean bfd_true
 156   (bfd *ignore);
 157 void *bfd_nullvoidptr
 158   (bfd *ignore);
 159 int bfd_0
 160   (bfd *ignore);
 161 unsigned int bfd_0u
 162   (bfd *ignore);
 163 long bfd_0l
 164   (bfd *ignore);
 165 long _bfd_n1
 166   (bfd *ignore);
 167 void bfd_void
 168   (bfd *ignore);
 169
 170 bfd *_bfd_new_bfd_contained_in
 171   (bfd *);
 172 const bfd_target *_bfd_dummy_target
 173   (bfd *abfd);
 174
 175 void bfd_dont_truncate_arname
 176   (bfd *abfd, const char *filename, char *hdr);
 177 void bfd_bsd_truncate_arname
 178   (bfd *abfd, const char *filename, char *hdr);
 179 void bfd_gnu_truncate_arname
 180   (bfd *abfd, const char *filename, char *hdr);
 181
 182 bfd_boolean bsd_write_armap
 183   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 184    int stridx);
 185
 186 bfd_boolean coff_write_armap
 187   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 188    int stridx);
 189
 190 extern void *_bfd_generic_read_ar_hdr
 191   (bfd *);
 192 extern void _bfd_ar_spacepad
 193   (char *, size_t, const char *, long);
 194
 195 extern void *_bfd_generic_read_ar_hdr_mag
 196   (bfd *, const char *);
 197
 198 bfd * bfd_generic_openr_next_archived_file
 199   (bfd *archive, bfd *last_file);
 200
 201 int bfd_generic_stat_arch_elt
 202   (bfd *, struct stat *);
 203
 204 #define _bfd_read_ar_hdr(abfd) \
 205   BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
 206 \f
 207 /* Generic routines to use for BFD_JUMP_TABLE_GENERIC.  Use
 208    BFD_JUMP_TABLE_GENERIC (_bfd_generic).  */
 209
 210 #define _bfd_generic_close_and_cleanup bfd_true
 211 #define _bfd_generic_bfd_free_cached_info bfd_true
 212 #define _bfd_generic_new_section_hook \
 213   ((bfd_boolean (*) (bfd *, asection *)) bfd_true)
 214 extern bfd_boolean _bfd_generic_get_section_contents
 215   (bfd *, asection *, void *, file_ptr, bfd_size_type);
 216 extern bfd_boolean _bfd_generic_get_section_contents_in_window
 217   (bfd *, asection *, bfd_window *, file_ptr, bfd_size_type);
 218
 219 /* Generic routines to use for BFD_JUMP_TABLE_COPY.  Use
 220    BFD_JUMP_TABLE_COPY (_bfd_generic).  */
 221
 222 #define _bfd_generic_bfd_copy_private_bfd_data \
 223   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 224 #define _bfd_generic_bfd_merge_private_bfd_data \
 225   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 226 #define _bfd_generic_bfd_set_private_flags \
 227   ((bfd_boolean (*) (bfd *, flagword)) bfd_true)
 228 #define _bfd_generic_bfd_copy_private_section_data \
 229   ((bfd_boolean (*) (bfd *, asection *, bfd *, asection *)) bfd_true)
 230 #define _bfd_generic_bfd_copy_private_symbol_data \
 231   ((bfd_boolean (*) (bfd *, asymbol *, bfd *, asymbol *)) bfd_true)
 232 #define _bfd_generic_bfd_copy_private_header_data \
 233   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 234 #define _bfd_generic_bfd_print_private_bfd_data \
 235   ((bfd_boolean (*) (bfd *, void *)) bfd_true)
 236
 237 /* Routines to use for BFD_JUMP_TABLE_CORE when there is no core file
 238    support.  Use BFD_JUMP_TABLE_CORE (_bfd_nocore).  */
 239
 240 extern char *_bfd_nocore_core_file_failing_command
 241   (bfd *);
 242 extern int _bfd_nocore_core_file_failing_signal
 243   (bfd *);
 244 extern bfd_boolean _bfd_nocore_core_file_matches_executable_p
 245   (bfd *, bfd *);
 246
 247 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE when there is no archive
 248    file support.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive).  */
 249
 250 #define _bfd_noarchive_slurp_armap bfd_false
 251 #define _bfd_noarchive_slurp_extended_name_table bfd_false
 252 #define _bfd_noarchive_construct_extended_name_table \
 253   ((bfd_boolean (*) (bfd *, char **, bfd_size_type *, const char **)) \
 254    bfd_false)
 255 #define _bfd_noarchive_truncate_arname \
 256   ((void (*) (bfd *, const char *, char *)) bfd_void)
 257 #define _bfd_noarchive_write_armap \
 258   ((bfd_boolean (*) (bfd *, unsigned int, struct orl *, unsigned int, int)) \
 259    bfd_false)
 260 #define _bfd_noarchive_read_ar_hdr bfd_nullvoidptr
 261 #define _bfd_noarchive_openr_next_archived_file \
 262   ((bfd *(*) (bfd *, bfd *)) bfd_nullvoidptr)
 263 #define _bfd_noarchive_get_elt_at_index \
 264   ((bfd *(*) (bfd *, symindex)) bfd_nullvoidptr)
 265 #define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
 266 #define _bfd_noarchive_update_armap_timestamp bfd_false
 267
 268 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
 269    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
 270
 271 #define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
 272 #define _bfd_archive_bsd_slurp_extended_name_table \
 273   _bfd_slurp_extended_name_table
 274 extern bfd_boolean _bfd_archive_bsd_construct_extended_name_table
 275   (bfd *, char **, bfd_size_type *, const char **);
 276 #define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
 277 #define _bfd_archive_bsd_write_armap bsd_write_armap
 278 #define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
 279 #define _bfd_archive_bsd_openr_next_archived_file \
 280   bfd_generic_openr_next_archived_file
 281 #define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
 282 #define _bfd_archive_bsd_generic_stat_arch_elt \
 283   bfd_generic_stat_arch_elt
 284 extern bfd_boolean _bfd_archive_bsd_update_armap_timestamp
 285   (bfd *);
 286
 287 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
 288    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
 289
 290 #define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
 291 #define _bfd_archive_coff_slurp_extended_name_table \
 292   _bfd_slurp_extended_name_table
 293 extern bfd_boolean _bfd_archive_coff_construct_extended_name_table
 294   (bfd *, char **, bfd_size_type *, const char **);
 295 #define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
 296 #define _bfd_archive_coff_write_armap coff_write_armap
 297 #define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
 298 #define _bfd_archive_coff_openr_next_archived_file \
 299   bfd_generic_openr_next_archived_file
 300 #define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
 301 #define _bfd_archive_coff_generic_stat_arch_elt \
 302   bfd_generic_stat_arch_elt
 303 #define _bfd_archive_coff_update_armap_timestamp bfd_true
 304
 305 /* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
 306    support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
 307
 308 #define _bfd_nosymbols_get_symtab_upper_bound _bfd_n1
 309 #define _bfd_nosymbols_canonicalize_symtab \
 310   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 311 #define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
 312 #define _bfd_nosymbols_print_symbol \
 313   ((void (*) (bfd *, void *, asymbol *, bfd_print_symbol_type)) bfd_void)
 314 #define _bfd_nosymbols_get_symbol_info \
 315   ((void (*) (bfd *, asymbol *, symbol_info *)) bfd_void)
 316 #define _bfd_nosymbols_bfd_is_local_label_name \
 317   ((bfd_boolean (*) (bfd *, const char *)) bfd_false)
 318 #define _bfd_nosymbols_bfd_is_target_special_symbol \
 319   ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
 320 #define _bfd_nosymbols_get_lineno \
 321   ((alent *(*) (bfd *, asymbol *)) bfd_nullvoidptr)
 322 #define _bfd_nosymbols_find_nearest_line \
 323   ((bfd_boolean (*) (bfd *, asection *, asymbol **, bfd_vma, const char **, \
 324                      const char **, unsigned int *)) \
 325    bfd_false)
 326 #define _bfd_nosymbols_find_inliner_info \
 327   ((bfd_boolean (*) (bfd *, const char **, const char **, unsigned int *)) \
 328    bfd_false)
 329 #define _bfd_nosymbols_bfd_make_debug_symbol \
 330   ((asymbol *(*) (bfd *, void *, unsigned long)) bfd_nullvoidptr)
 331 #define _bfd_nosymbols_read_minisymbols \
 332   ((long (*) (bfd *, bfd_boolean, void **, unsigned int *)) _bfd_n1)
 333 #define _bfd_nosymbols_minisymbol_to_symbol \
 334   ((asymbol *(*) (bfd *, bfd_boolean, const void *, asymbol *)) \
 335    bfd_nullvoidptr)
 336
 337 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 338    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 339
 340 #define _bfd_norelocs_get_reloc_upper_bound \
 341   ((long (*) (bfd *, asection *)) _bfd_n1)
 342 #define _bfd_norelocs_canonicalize_reloc \
 343   ((long (*) (bfd *, asection *, arelent **, asymbol **)) _bfd_n1)
 344 #define _bfd_norelocs_bfd_reloc_type_lookup \
 345   ((reloc_howto_type *(*) (bfd *, bfd_reloc_code_real_type)) bfd_nullvoidptr)
 346
 347 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 348    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 349
 350 #define _bfd_nowrite_set_arch_mach \
 351   ((bfd_boolean (*) (bfd *, enum bfd_architecture, unsigned long)) \
 352    bfd_false)
 353 #define _bfd_nowrite_set_section_contents \
 354   ((bfd_boolean (*) (bfd *, asection *, const void *, file_ptr, bfd_size_type)) \
 355    bfd_false)
 356
 357 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 358    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 359
 360 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 361 extern bfd_boolean _bfd_generic_set_section_contents
 362   (bfd *, asection *, const void *, file_ptr, bfd_size_type);
 363
 364 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 365    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 366
 367 #define _bfd_nolink_sizeof_headers ((int (*) (bfd *, bfd_boolean)) bfd_0)
 368 #define _bfd_nolink_bfd_get_relocated_section_contents \
 369   ((bfd_byte *(*) (bfd *, struct bfd_link_info *, struct bfd_link_order *, \
 370                    bfd_byte *, bfd_boolean, asymbol **)) \
 371    bfd_nullvoidptr)
 372 #define _bfd_nolink_bfd_relax_section \
 373   ((bfd_boolean (*) \
 374     (bfd *, asection *, struct bfd_link_info *, bfd_boolean *)) \
 375    bfd_false)
 376 #define _bfd_nolink_bfd_gc_sections \
 377   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 378    bfd_false)
 379 #define _bfd_nolink_bfd_merge_sections \
 380   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 381    bfd_false)
 382 #define _bfd_nolink_bfd_is_group_section \
 383   ((bfd_boolean (*) (bfd *, const struct bfd_section *)) \
 384    bfd_false)
 385 #define _bfd_nolink_bfd_discard_group \
 386   ((bfd_boolean (*) (bfd *, struct bfd_section *)) \
 387    bfd_false)
 388 #define _bfd_nolink_bfd_link_hash_table_create \
 389   ((struct bfd_link_hash_table *(*) (bfd *)) bfd_nullvoidptr)
 390 #define _bfd_nolink_bfd_link_hash_table_free \
 391   ((void (*) (struct bfd_link_hash_table *)) bfd_void)
 392 #define _bfd_nolink_bfd_link_add_symbols \
 393   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 394 #define _bfd_nolink_bfd_link_just_syms \
 395   ((void (*) (asection *, struct bfd_link_info *)) bfd_void)
 396 #define _bfd_nolink_bfd_final_link \
 397   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 398 #define _bfd_nolink_bfd_link_split_section \
 399   ((bfd_boolean (*) (bfd *, struct bfd_section *)) bfd_false)
 400 #define _bfd_nolink_section_already_linked \
 401   ((void (*) (bfd *, struct bfd_section *)) bfd_void)
 402
 403 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 404    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 405    (_bfd_nodynamic).  */
 406
 407 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_n1
 408 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 409   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 410 #define _bfd_nodynamic_get_synthetic_symtab \
 411   ((long (*) (bfd *, long, asymbol **, long, asymbol **, asymbol **)) _bfd_n1)
 412 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_n1
 413 #define _bfd_nodynamic_canonicalize_dynamic_reloc \
 414   ((long (*) (bfd *, arelent **, asymbol **)) _bfd_n1)
 415 \f
 416 /* Generic routine to determine of the given symbol is a local
 417    label.  */
 418 extern bfd_boolean bfd_generic_is_local_label_name
 419   (bfd *, const char *);
 420
 421 /* Generic minisymbol routines.  */
 422 extern long _bfd_generic_read_minisymbols
 423   (bfd *, bfd_boolean, void **, unsigned int *);
 424 extern asymbol *_bfd_generic_minisymbol_to_symbol
 425   (bfd *, bfd_boolean, const void *, asymbol *);
 426
 427 /* Find the nearest line using .stab/.stabstr sections.  */
 428 extern bfd_boolean _bfd_stab_section_find_nearest_line
 429   (bfd *, asymbol **, asection *, bfd_vma, bfd_boolean *,
 430    const char **, const char **, unsigned int *, void **);
 431
 432 /* Find the nearest line using DWARF 1 debugging information.  */
 433 extern bfd_boolean _bfd_dwarf1_find_nearest_line
 434   (bfd *, asection *, asymbol **, bfd_vma, const char **,
 435    const char **, unsigned int *);
 436
 437 /* Find the nearest line using DWARF 2 debugging information.  */
 438 extern bfd_boolean _bfd_dwarf2_find_nearest_line
 439   (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
 440    unsigned int *, unsigned int, void **);
 441
 442 /* Find the line using DWARF 2 debugging information.  */
 443 extern bfd_boolean _bfd_dwarf2_find_line
 444   (bfd *, asymbol **, asymbol *, const char **,
 445    unsigned int *, unsigned int, void **);
 446
 447 bfd_boolean _bfd_generic_find_line
 448   (bfd *, asymbol **, asymbol *, const char **, unsigned int *);
 449
 450 /* Find inliner info after calling bfd_find_nearest_line. */
 451 extern bfd_boolean _bfd_dwarf2_find_inliner_info
 452   (bfd *, const char **, const char **, unsigned int *, void **);
 453
 454 /* Create a new section entry.  */
 455 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 456   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 457
 458 /* A routine to create entries for a bfd_link_hash_table.  */
 459 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 460   (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
 461    const char *string);
 462
 463 /* Initialize a bfd_link_hash_table.  */
 464 extern bfd_boolean _bfd_link_hash_table_init
 465   (struct bfd_link_hash_table *, bfd *,
 466    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 467                                struct bfd_hash_table *,
 468                                const char *));
 469
 470 /* Generic link hash table creation routine.  */
 471 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 472   (bfd *);
 473
 474 /* Generic link hash table destruction routine.  */
 475 extern void _bfd_generic_link_hash_table_free
 476   (struct bfd_link_hash_table *);
 477
 478 /* Generic add symbol routine.  */
 479 extern bfd_boolean _bfd_generic_link_add_symbols
 480   (bfd *, struct bfd_link_info *);
 481
 482 /* Generic add symbol routine.  This version is used by targets for
 483    which the linker must collect constructors and destructors by name,
 484    as the collect2 program does.  */
 485 extern bfd_boolean _bfd_generic_link_add_symbols_collect
 486   (bfd *, struct bfd_link_info *);
 487
 488 /* Generic archive add symbol routine.  */
 489 extern bfd_boolean _bfd_generic_link_add_archive_symbols
 490   (bfd *, struct bfd_link_info *,
 491    bfd_boolean (*) (bfd *, struct bfd_link_info *, bfd_boolean *));
 492
 493 /* Forward declaration to avoid prototype errors.  */
 494 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 495
 496 /* Generic routine to add a single symbol.  */
 497 extern bfd_boolean _bfd_generic_link_add_one_symbol
 498   (struct bfd_link_info *, bfd *, const char *name, flagword,
 499    asection *, bfd_vma, const char *, bfd_boolean copy,
 500    bfd_boolean constructor, struct bfd_link_hash_entry **);
 501
 502 /* Generic routine to mark section as supplying symbols only.  */
 503 extern void _bfd_generic_link_just_syms
 504   (asection *, struct bfd_link_info *);
 505
 506 /* Generic link routine.  */
 507 extern bfd_boolean _bfd_generic_final_link
 508   (bfd *, struct bfd_link_info *);
 509
 510 extern bfd_boolean _bfd_generic_link_split_section
 511   (bfd *, struct bfd_section *);
 512
 513 extern void _bfd_generic_section_already_linked
 514   (bfd *, struct bfd_section *);
 515
 516 /* Generic reloc_link_order processing routine.  */
 517 extern bfd_boolean _bfd_generic_reloc_link_order
 518   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 519
 520 /* Default link order processing routine.  */
 521 extern bfd_boolean _bfd_default_link_order
 522   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 523
 524 /* Count the number of reloc entries in a link order list.  */
 525 extern unsigned int _bfd_count_link_order_relocs
 526   (struct bfd_link_order *);
 527
 528 /* Final link relocation routine.  */
 529 extern bfd_reloc_status_type _bfd_final_link_relocate
 530   (reloc_howto_type *, bfd *, asection *, bfd_byte *,
 531    bfd_vma, bfd_vma, bfd_vma);
 532
 533 /* Relocate a particular location by a howto and a value.  */
 534 extern bfd_reloc_status_type _bfd_relocate_contents
 535   (reloc_howto_type *, bfd *, bfd_vma, bfd_byte *);
 536
 537 /* Link stabs in sections in the first pass.  */
 538
 539 extern bfd_boolean _bfd_link_section_stabs
 540   (bfd *, struct stab_info *, asection *, asection *, void **,
 541    bfd_size_type *);
 542
 543 /* Eliminate stabs for discarded functions and symbols.  */
 544 extern bfd_boolean _bfd_discard_section_stabs
 545   (bfd *, asection *, void *, bfd_boolean (*) (bfd_vma, void *), void *);
 546
 547 /* Write out the .stab section when linking stabs in sections.  */
 548
 549 extern bfd_boolean _bfd_write_section_stabs
 550   (bfd *, struct stab_info *, asection *, void **, bfd_byte *);
 551
 552 /* Write out the .stabstr string table when linking stabs in sections.  */
 553
 554 extern bfd_boolean _bfd_write_stab_strings
 555   (bfd *, struct stab_info *);
 556
 557 /* Find an offset within a .stab section when linking stabs in
 558    sections.  */
 559
 560 extern bfd_vma _bfd_stab_section_offset
 561   (asection *, void *, bfd_vma);
 562
 563 /* Register a SEC_MERGE section as a candidate for merging.  */
 564
 565 extern bfd_boolean _bfd_add_merge_section
 566   (bfd *, void **, asection *, void **);
 567
 568 /* Attempt to merge SEC_MERGE sections.  */
 569
 570 extern bfd_boolean _bfd_merge_sections
 571   (bfd *, struct bfd_link_info *, void *, void (*) (bfd *, asection *));
 572
 573 /* Write out a merged section.  */
 574
 575 extern bfd_boolean _bfd_write_merged_section
 576   (bfd *, asection *, void *);
 577
 578 /* Find an offset within a modified SEC_MERGE section.  */
 579
 580 extern bfd_vma _bfd_merged_section_offset
 581   (bfd *, asection **, void *, bfd_vma);
 582
 583 /* Create a string table.  */
 584 extern struct bfd_strtab_hash *_bfd_stringtab_init
 585   (void);
 586
 587 /* Create an XCOFF .debug section style string table.  */
 588 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init
 589   (void);
 590
 591 /* Free a string table.  */
 592 extern void _bfd_stringtab_free
 593   (struct bfd_strtab_hash *);
 594
 595 /* Get the size of a string table.  */
 596 extern bfd_size_type _bfd_stringtab_size
 597   (struct bfd_strtab_hash *);
 598
 599 /* Add a string to a string table.  */
 600 extern bfd_size_type _bfd_stringtab_add
 601   (struct bfd_strtab_hash *, const char *, bfd_boolean hash, bfd_boolean copy);
 602
 603 /* Write out a string table.  */
 604 extern bfd_boolean _bfd_stringtab_emit
 605   (bfd *, struct bfd_strtab_hash *);
 606
 607 /* Check that endianness of input and output file match.  */
 608 extern bfd_boolean _bfd_generic_verify_endian_match
 609   (bfd *, bfd *);
 610 \f
 611 /* Macros to tell if bfds are read or write enabled.
 612
 613    Note that bfds open for read may be scribbled into if the fd passed
 614    to bfd_fdopenr is actually open both for read and write
 615    simultaneously.  However an output bfd will never be open for
 616    read.  Therefore sometimes you want to check bfd_read_p or
 617    !bfd_read_p, and only sometimes bfd_write_p.
 618 */
 619
 620 #define bfd_read_p(abfd) \
 621   ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 622 #define bfd_write_p(abfd) \
 623   ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 624
 625 void bfd_assert
 626   (const char*,int);
 627
 628 #define BFD_ASSERT(x) \
 629   do { if (!(x)) bfd_assert(__FILE__,__LINE__); } while (0)
 630
 631 #define BFD_FAIL() \
 632   do { bfd_assert(__FILE__,__LINE__); } while (0)
 633
 634 extern void _bfd_abort
 635   (const char *, int, const char *) ATTRIBUTE_NORETURN;
 636
 637 /* if gcc >= 2.6, we can give a function name, too */
 638 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 639 #define __PRETTY_FUNCTION__  ((char *) NULL)
 640 #endif
 641
 642 #undef abort
 643 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 644
 645 /* Manipulate a system FILE but using BFD's "file_ptr", rather than
 646    the system "off_t" or "off64_t", as the offset.  */
 647 extern file_ptr real_ftell (FILE *file);
 648 extern int real_fseek (FILE *file, file_ptr offset, int whence);
 649
 650 FILE *  bfd_cache_lookup_worker
 651   (bfd *);
 652
 653 extern bfd *bfd_last_cache;
 654
 655 /* List of supported target vectors, and the default vector (if
 656    bfd_default_vector[0] is NULL, there is no default).  */
 657 extern const bfd_target * const *bfd_target_vector;
 658 extern const bfd_target *bfd_default_vector[];
 659
 660 /* List of associated target vectors.  */
 661 extern const bfd_target * const *bfd_associated_vector;
 662
 663 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 664    other common header files.  */
 665
 666 #if defined(__STDC__) || defined(ALMOST_STDC)
 667 struct ecoff_find_line;
 668 #endif
 669
 670 extern bfd_boolean _bfd_ecoff_locate_line
 671   (bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 672    const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 673    const char **, const char **, unsigned int *);
 674 extern bfd_boolean _bfd_ecoff_get_accumulated_pdr
 675   (void *, bfd_byte *);
 676 extern bfd_boolean _bfd_ecoff_get_accumulated_sym
 677   (void *, bfd_byte *);
 678 extern bfd_boolean _bfd_ecoff_get_accumulated_ss
 679   (void *, bfd_byte *);
 680
 681 extern bfd_vma _bfd_get_gp_value
 682   (bfd *);
 683 extern void _bfd_set_gp_value
 684   (bfd *, bfd_vma);
 685
 686 /* Function shared by the COFF and ELF SH backends, which have no
 687    other common header files.  */
 688
 689 #ifndef _bfd_sh_align_load_span
 690 extern bfd_boolean _bfd_sh_align_load_span
 691   (bfd *, asection *, bfd_byte *,
 692    bfd_boolean (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
 693    void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bfd_boolean *);
 694 #endif
 695
 696 /* This is the shape of the elements inside the already_linked hash
 697    table. It maps a name onto a list of already_linked elements with
 698    the same name.  */
 699
 700 struct bfd_section_already_linked_hash_entry
 701 {
 702   struct bfd_hash_entry root;
 703   struct bfd_section_already_linked *entry;
 704 };
 705
 706 struct bfd_section_already_linked
 707 {
 708   struct bfd_section_already_linked *next;
 709   asection *sec;
 710 };
 711
 712 extern struct bfd_section_already_linked_hash_entry *
 713   bfd_section_already_linked_table_lookup (const char *);
 714 extern void bfd_section_already_linked_table_insert
 715   (struct bfd_section_already_linked_hash_entry *, asection *);
 716 extern void bfd_section_already_linked_table_traverse
 717   (bfd_boolean (*) (struct bfd_section_already_linked_hash_entry *,
 718                     void *), void *);
 719
 720 extern bfd_vma read_unsigned_leb128 (bfd *, bfd_byte *, unsigned int *);
 721 extern bfd_signed_vma read_signed_leb128 (bfd *, bfd_byte *, unsigned int *);
 722