bfd/libcoff-in.h

   1 /* BFD COFF object file private structure.
   2    Copyright (C) 1990-2020 Free Software Foundation, Inc.
   3    Written by Cygnus Support.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #ifndef _LIBCOFF_H
  23 #define _LIBCOFF_H 1
  24
  25 #include "bfdlink.h"
  26 #include "coff-bfd.h"
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 /* Object file tdata; access macros.  */
  33
  34 #define coff_data(bfd)                ((bfd)->tdata.coff_obj_data)
  35 #define obj_pe(bfd)                   (coff_data (bfd)->pe)
  36 #define obj_symbols(bfd)              (coff_data (bfd)->symbols)
  37 #define obj_sym_filepos(bfd)          (coff_data (bfd)->sym_filepos)
  38 #define obj_relocbase(bfd)            (coff_data (bfd)->relocbase)
  39 #define obj_raw_syments(bfd)          (coff_data (bfd)->raw_syments)
  40 #define obj_raw_syment_count(bfd)     (coff_data (bfd)->raw_syment_count)
  41 #define obj_convert(bfd)              (coff_data (bfd)->conversion_table)
  42 #define obj_conv_table_size(bfd)      (coff_data (bfd)->conv_table_size)
  43 #define obj_coff_external_syms(bfd)   (coff_data (bfd)->external_syms)
  44 #define obj_coff_keep_syms(bfd)       (coff_data (bfd)->keep_syms)
  45 #define obj_coff_strings(bfd)         (coff_data (bfd)->strings)
  46 #define obj_coff_strings_len(bfd)     (coff_data (bfd)->strings_len)
  47 #define obj_coff_keep_strings(bfd)    (coff_data (bfd)->keep_strings)
  48 #define obj_coff_sym_hashes(bfd)      (coff_data (bfd)->sym_hashes)
  49 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  50 #define obj_coff_local_toc_table(bfd) (coff_data (bfd)->local_toc_sym_map)
  51
  52 /* `Tdata' information kept for COFF files.  */
  53
  54 typedef struct coff_tdata
  55 {
  56   struct coff_symbol_struct *symbols;   /* Symtab for input bfd.  */
  57   unsigned int *conversion_table;
  58   int conv_table_size;
  59   file_ptr sym_filepos;
  60
  61   struct coff_ptr_struct *raw_syments;
  62   unsigned long raw_syment_count;
  63
  64   /* These are only valid once writing has begun.  */
  65   unsigned long int relocbase;
  66
  67   /* These members communicate important constants about the symbol table
  68      to GDB's symbol-reading code.  These `constants' unfortunately vary
  69      from coff implementation to implementation...  */
  70   unsigned local_n_btmask;
  71   unsigned local_n_btshft;
  72   unsigned local_n_tmask;
  73   unsigned local_n_tshift;
  74   unsigned local_symesz;
  75   unsigned local_auxesz;
  76   unsigned local_linesz;
  77
  78   /* The unswapped external symbols.  May be NULL.  Read by
  79      _bfd_coff_get_external_symbols.  */
  80   void * external_syms;
  81   /* If this is TRUE, the external_syms may not be freed.  */
  82   bfd_boolean keep_syms;
  83
  84   /* The string table.  May be NULL.  Read by
  85      _bfd_coff_read_string_table.  */
  86   char *strings;
  87   /* The length of the strings table.  For error checking.  */
  88   bfd_size_type strings_len;
  89   /* If this is TRUE, the strings may not be freed.  */
  90   bfd_boolean keep_strings;
  91   /* If this is TRUE, the strings have been written out already.  */
  92   bfd_boolean strings_written;
  93
  94   /* Is this a PE format coff file?  */
  95   int pe;
  96   /* Used by the COFF backend linker.  */
  97   struct coff_link_hash_entry **sym_hashes;
  98
  99   /* Used by the pe linker for PowerPC.  */
 100   int *local_toc_sym_map;
 101
 102   struct bfd_link_info *link_info;
 103
 104   /* Used by coff_find_nearest_line.  */
 105   void * line_info;
 106
 107   /* A place to stash dwarf2 info for this bfd.  */
 108   void * dwarf2_find_line_info;
 109
 110   /* The timestamp from the COFF file header.  */
 111   long timestamp;
 112
 113   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 114      used by ARM code.  */
 115   flagword flags;
 116
 117   /* coff-stgo32 EXE stub header after BFD tdata has been allocated.  Its data
 118      is kept in internal_filehdr.go32stub beforehand.  */
 119   char *go32stub;
 120 } coff_data_type;
 121
 122 /* Tdata for pe image files.  */
 123 typedef struct pe_tdata
 124 {
 125   coff_data_type coff;
 126   struct internal_extra_pe_aouthdr pe_opthdr;
 127   int dll;
 128   int has_reloc_section;
 129   int dont_strip_reloc;
 130   int dos_message[16];
 131   /* The timestamp to insert into the output file.
 132      If the timestamp is -1 then the current time is used.  */
 133   int timestamp;
 134   bfd_boolean (*in_reloc_p) (bfd *, reloc_howto_type *);
 135   flagword real_flags;
 136
 137   /* Build-id info.  */
 138   struct
 139   {
 140     bfd_boolean (*after_write_object_contents) (bfd *);
 141     const char *style;
 142     asection *sec;
 143   } build_id;
 144 } pe_data_type;
 145
 146 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 147
 148 /* Tdata for XCOFF files.  */
 149
 150 struct xcoff_tdata
 151 {
 152   /* Basic COFF information.  */
 153   coff_data_type coff;
 154
 155   /* TRUE if this is an XCOFF64 file. */
 156   bfd_boolean xcoff64;
 157
 158   /* TRUE if a large a.out header should be generated.  */
 159   bfd_boolean full_aouthdr;
 160
 161   /* TOC value.  */
 162   bfd_vma toc;
 163
 164   /* Index of section holding TOC.  */
 165   int sntoc;
 166
 167   /* Index of section holding entry point.  */
 168   int snentry;
 169
 170   /* .text alignment from optional header.  */
 171   int text_align_power;
 172
 173   /* .data alignment from optional header.  */
 174   int data_align_power;
 175
 176   /* modtype from optional header.  */
 177   short modtype;
 178
 179   /* cputype from optional header.  */
 180   short cputype;
 181
 182   /* maxdata from optional header.  */
 183   bfd_vma maxdata;
 184
 185   /* maxstack from optional header.  */
 186   bfd_vma maxstack;
 187
 188   /* Used by the XCOFF backend linker.  */
 189   asection **csects;
 190   long *debug_indices;
 191   unsigned int *lineno_counts;
 192   unsigned int import_file_id;
 193 };
 194
 195 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 196
 197 /* We take the address of the first element of an asymbol to ensure that the
 198    macro is only ever applied to an asymbol.  */
 199 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 200
 201 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 202
 203 struct xcoff_section_tdata
 204 {
 205   /* Used for XCOFF csects created by the linker; points to the real
 206      XCOFF section which contains this csect.  */
 207   asection *enclosing;
 208   /* The lineno_count field for the enclosing section, because we are
 209      going to clobber it there.  */
 210   unsigned int lineno_count;
 211   /* The first and last symbol indices for symbols used by this csect.  */
 212   unsigned long first_symndx;
 213   unsigned long last_symndx;
 214 };
 215
 216 /* An accessor macro the xcoff_section_tdata structure.  */
 217 #define xcoff_section_data(abfd, sec) \
 218   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 219
 220 /* Tdata for sections in PE files.  */
 221
 222 struct pei_section_tdata
 223 {
 224   /* The virtual size of the section.  */
 225   bfd_size_type virt_size;
 226   /* The PE section flags.  */
 227   long pe_flags;
 228 };
 229
 230 /* An accessor macro for the pei_section_tdata structure.  */
 231 #define pei_section_data(abfd, sec) \
 232   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 233
 234 /* COFF linker hash table entries.  */
 235
 236 struct coff_link_hash_entry
 237 {
 238   struct bfd_link_hash_entry root;
 239
 240   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 241      there is a reloc against this symbol.  */
 242   long indx;
 243
 244   /* Symbol type.  */
 245   unsigned short type;
 246
 247   /* Symbol class.  */
 248   unsigned char symbol_class;
 249
 250   /* Number of auxiliary entries.  */
 251   char numaux;
 252
 253   /* BFD to take auxiliary entries from.  */
 254   bfd *auxbfd;
 255
 256   /* Pointer to array of auxiliary entries, if any.  */
 257   union internal_auxent *aux;
 258
 259   /* Flag word; legal values follow.  */
 260   unsigned short coff_link_hash_flags;
 261   /* Symbol is a PE section symbol.  */
 262 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 263 };
 264
 265 /* COFF linker hash table.  */
 266
 267 struct coff_link_hash_table
 268 {
 269   struct bfd_link_hash_table root;
 270   /* A pointer to information used to link stabs in sections.  */
 271   struct stab_info stab_info;
 272 };
 273
 274 struct coff_reloc_cookie
 275 {
 276   struct internal_reloc *         rels;
 277   struct internal_reloc *         rel;
 278   struct internal_reloc *         relend;
 279   struct coff_symbol_struct *     symbols;      /* Symtab for input bfd.  */
 280   bfd *                           abfd;
 281   struct coff_link_hash_entry **  sym_hashes;
 282 };
 283
 284 /* Look up an entry in a COFF linker hash table.  */
 285
 286 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 287   ((struct coff_link_hash_entry *)                                      \
 288    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 289                          (copy), (follow)))
 290
 291 /* Traverse a COFF linker hash table.  */
 292
 293 #define coff_link_hash_traverse(table, func, info)                      \
 294   (bfd_link_hash_traverse                                               \
 295    (&(table)->root,                                                     \
 296     (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
 297     (info)))
 298
 299 /* Get the COFF linker hash table from a link_info structure.  */
 300
 301 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 302
 303 /* Functions in coffgen.c.  */
 304 extern bfd_cleanup coff_object_p
 305   (bfd *);
 306 extern struct bfd_section *coff_section_from_bfd_index
 307   (bfd *, int);
 308 extern long coff_get_symtab_upper_bound
 309   (bfd *);
 310 extern long coff_canonicalize_symtab
 311   (bfd *, asymbol **);
 312 extern int coff_count_linenumbers
 313   (bfd *);
 314 extern bfd_boolean coff_renumber_symbols
 315   (bfd *, int *);
 316 extern void coff_mangle_symbols
 317   (bfd *);
 318 extern bfd_boolean coff_write_symbols
 319   (bfd *);
 320 extern bfd_boolean coff_write_alien_symbol
 321   (bfd *, asymbol *, struct internal_syment *, union internal_auxent *,
 322    bfd_vma *, bfd_size_type *, asection **, bfd_size_type *);
 323 extern bfd_boolean coff_write_linenumbers
 324   (bfd *);
 325 extern alent *coff_get_lineno
 326   (bfd *, asymbol *);
 327 extern asymbol *coff_section_symbol
 328   (bfd *, char *);
 329 extern bfd_boolean _bfd_coff_get_external_symbols
 330   (bfd *);
 331 extern const char *_bfd_coff_read_string_table
 332   (bfd *);
 333 extern bfd_boolean _bfd_coff_free_symbols
 334   (bfd *);
 335 extern struct coff_ptr_struct *coff_get_normalized_symtab
 336   (bfd *);
 337 extern long coff_get_reloc_upper_bound
 338   (bfd *, sec_ptr);
 339 extern asymbol *coff_make_empty_symbol
 340   (bfd *);
 341 extern void coff_print_symbol
 342   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 343 extern void coff_get_symbol_info
 344   (bfd *, asymbol *, symbol_info *ret);
 345 #define coff_get_symbol_version_string \
 346   _bfd_nosymbols_get_symbol_version_string
 347 extern bfd_boolean _bfd_coff_is_local_label_name
 348   (bfd *, const char *);
 349 extern asymbol *coff_bfd_make_debug_symbol
 350   (bfd *, void *, unsigned long);
 351 extern bfd_boolean coff_find_nearest_line
 352   (bfd *, asymbol **, asection *, bfd_vma,
 353    const char **, const char **, unsigned int *, unsigned int *);
 354 #define coff_find_line _bfd_nosymbols_find_line
 355 struct dwarf_debug_section;
 356 extern bfd_boolean coff_find_nearest_line_with_names
 357   (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **,
 358    unsigned int *, const struct dwarf_debug_section *);
 359 extern bfd_boolean coff_find_inliner_info
 360   (bfd *, const char **, const char **, unsigned int *);
 361 extern int coff_sizeof_headers
 362   (bfd *, struct bfd_link_info *);
 363 extern bfd_boolean bfd_coff_reloc16_relax_section
 364   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 365 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 366   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 367    bfd_byte *, bfd_boolean, asymbol **);
 368 extern bfd_vma bfd_coff_reloc16_get_value
 369   (arelent *, struct bfd_link_info *, asection *);
 370 extern void bfd_perform_slip
 371   (bfd *, unsigned int, asection *, bfd_vma);
 372 extern bfd_boolean _bfd_coff_close_and_cleanup
 373   (bfd *);
 374
 375 /* Functions and types in cofflink.c.  */
 376
 377 #define STRING_SIZE_SIZE 4
 378
 379 /* We use a hash table to merge identical enum, struct, and union
 380    definitions in the linker.  */
 381
 382 /* Information we keep for a single element (an enum value, a
 383    structure or union field) in the debug merge hash table.  */
 384
 385 struct coff_debug_merge_element
 386 {
 387   /* Next element.  */
 388   struct coff_debug_merge_element *next;
 389
 390   /* Name.  */
 391   const char *name;
 392
 393   /* Type.  */
 394   unsigned int type;
 395
 396   /* Symbol index for complex type.  */
 397   long tagndx;
 398 };
 399
 400 /* A linked list of debug merge entries for a given name.  */
 401
 402 struct coff_debug_merge_type
 403 {
 404   /* Next type with the same name.  */
 405   struct coff_debug_merge_type *next;
 406
 407   /* Class of type.  */
 408   int type_class;
 409
 410   /* Symbol index where this type is defined.  */
 411   long indx;
 412
 413   /* List of elements.  */
 414   struct coff_debug_merge_element *elements;
 415 };
 416
 417 /* Information we store in the debug merge hash table.  */
 418
 419 struct coff_debug_merge_hash_entry
 420 {
 421   struct bfd_hash_entry root;
 422
 423   /* A list of types with this name.  */
 424   struct coff_debug_merge_type *types;
 425 };
 426
 427 /* The debug merge hash table.  */
 428
 429 struct coff_debug_merge_hash_table
 430 {
 431   struct bfd_hash_table root;
 432 };
 433
 434 /* Initialize a COFF debug merge hash table.  */
 435
 436 #define coff_debug_merge_hash_table_init(table) \
 437   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc, \
 438                         sizeof (struct coff_debug_merge_hash_entry)))
 439
 440 /* Free a COFF debug merge hash table.  */
 441
 442 #define coff_debug_merge_hash_table_free(table) \
 443   (bfd_hash_table_free (&(table)->root))
 444
 445 /* Look up an entry in a COFF debug merge hash table.  */
 446
 447 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 448   ((struct coff_debug_merge_hash_entry *) \
 449    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 450
 451 /* Information we keep for each section in the output file when doing
 452    a relocatable link.  */
 453
 454 struct coff_link_section_info
 455 {
 456   /* The relocs to be output.  */
 457   struct internal_reloc *relocs;
 458   /* For each reloc against a global symbol whose index was not known
 459      when the reloc was handled, the global hash table entry.  */
 460   struct coff_link_hash_entry **rel_hashes;
 461 };
 462
 463 /* Information that we pass around while doing the final link step.  */
 464
 465 struct coff_final_link_info
 466 {
 467   /* General link information.  */
 468   struct bfd_link_info *info;
 469   /* Output BFD.  */
 470   bfd *output_bfd;
 471   /* Used to indicate failure in traversal routine.  */
 472   bfd_boolean failed;
 473   /* If doing "task linking" set only during the time when we want the
 474      global symbol writer to convert the storage class of defined global
 475      symbols from global to static. */
 476   bfd_boolean global_to_static;
 477   /* Hash table for long symbol names.  */
 478   struct bfd_strtab_hash *strtab;
 479   /* When doing a relocatable link, an array of information kept for
 480      each output section, indexed by the target_index field.  */
 481   struct coff_link_section_info *section_info;
 482   /* Symbol index of last C_FILE symbol (-1 if none).  */
 483   long last_file_index;
 484   /* Contents of last C_FILE symbol.  */
 485   struct internal_syment last_file;
 486   /* Symbol index of first aux entry of last .bf symbol with an empty
 487      endndx field (-1 if none).  */
 488   long last_bf_index;
 489   /* Contents of last_bf_index aux entry.  */
 490   union internal_auxent last_bf;
 491   /* Hash table used to merge debug information.  */
 492   struct coff_debug_merge_hash_table debug_merge;
 493   /* Buffer large enough to hold swapped symbols of any input file.  */
 494   struct internal_syment *internal_syms;
 495   /* Buffer large enough to hold sections of symbols of any input file.  */
 496   asection **sec_ptrs;
 497   /* Buffer large enough to hold output indices of symbols of any
 498      input file.  */
 499   long *sym_indices;
 500   /* Buffer large enough to hold output symbols for any input file.  */
 501   bfd_byte *outsyms;
 502   /* Buffer large enough to hold external line numbers for any input
 503      section.  */
 504   bfd_byte *linenos;
 505   /* Buffer large enough to hold any input section.  */
 506   bfd_byte *contents;
 507   /* Buffer large enough to hold external relocs of any input section.  */
 508   bfd_byte *external_relocs;
 509   /* Buffer large enough to hold swapped relocs of any input section.  */
 510   struct internal_reloc *internal_relocs;
 511 };
 512
 513 /* Most COFF variants have no way to record the alignment of a
 514    section.  This struct is used to set a specific alignment based on
 515    the name of the section.  */
 516
 517 struct coff_section_alignment_entry
 518 {
 519   /* The section name.  */
 520   const char *name;
 521
 522   /* This is either (unsigned int) -1, indicating that the section
 523      name must match exactly, or it is the number of letters which
 524      must match at the start of the name.  */
 525   unsigned int comparison_length;
 526
 527   /* These macros may be used to fill in the first two fields in a
 528      structure initialization.  */
 529 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 530 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 531
 532   /* Only use this entry if the default section alignment for this
 533      target is at least that much (as a power of two).  If this field
 534      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 535   unsigned int default_alignment_min;
 536
 537   /* Only use this entry if the default section alignment for this
 538      target is no greater than this (as a power of two).  If this
 539      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 540   unsigned int default_alignment_max;
 541
 542 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 543
 544   /* The desired alignment for this section (as a power of two).  */
 545   unsigned int alignment_power;
 546 };
 547
 548 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 549   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 550 extern bfd_boolean _bfd_coff_link_hash_table_init
 551   (struct coff_link_hash_table *, bfd *,
 552    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 553                                struct bfd_hash_table *,
 554                                const char *),
 555    unsigned int);
 556 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 557   (bfd *);
 558 extern const char *_bfd_coff_internal_syment_name
 559   (bfd *, const struct internal_syment *, char *);
 560 extern bfd_boolean _bfd_coff_section_already_linked
 561   (bfd *, asection *, struct bfd_link_info *);
 562 extern bfd_boolean _bfd_coff_link_add_symbols
 563   (bfd *, struct bfd_link_info *);
 564 extern bfd_boolean _bfd_coff_final_link
 565   (bfd *, struct bfd_link_info *);
 566 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 567   (bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
 568    struct internal_reloc *);
 569 extern bfd_boolean _bfd_coff_generic_relocate_section
 570   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 571    struct internal_reloc *, struct internal_syment *, asection **);
 572 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 573   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 574 extern bfd_boolean _bfd_coff_write_global_sym
 575   (struct bfd_hash_entry *, void *);
 576 extern bfd_boolean _bfd_coff_write_task_globals
 577   (struct coff_link_hash_entry *, void *);
 578 extern bfd_boolean _bfd_coff_link_input_bfd
 579   (struct coff_final_link_info *, bfd *);
 580 extern bfd_boolean _bfd_coff_reloc_link_order
 581   (bfd *, struct coff_final_link_info *, asection *,
 582    struct bfd_link_order *);
 583 extern bfd_boolean bfd_coff_gc_sections
 584   (bfd *, struct bfd_link_info *);
 585 extern const char *bfd_coff_group_name
 586   (bfd *, const asection *);
 587
 588 #define coff_get_section_contents_in_window \
 589   _bfd_generic_get_section_contents_in_window
 590
 591 /* Functions in xcofflink.c.  */
 592
 593 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 594   (bfd *);
 595 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 596   (bfd *, asymbol **);
 597 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 598   (bfd *);
 599 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 600   (bfd *, arelent **, asymbol **);
 601 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 602   (bfd *);
 603 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 604   (bfd *, struct bfd_link_info *);
 605 extern bfd_boolean _bfd_xcoff_bfd_final_link
 606   (bfd *, struct bfd_link_info *);
 607 extern bfd_boolean _bfd_xcoff_define_common_symbol
 608   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 609 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 610   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 611    struct internal_reloc *, struct internal_syment *, asection **);
 612
 613 /* Functions in coff-ppc.c.  FIXME: These are called by pe.em in the
 614    linker, and so should start with bfd and be declared in bfd.h.  */
 615
 616 extern bfd_boolean ppc_allocate_toc_section
 617   (struct bfd_link_info *);
 618 extern bfd_boolean ppc_process_before_allocation
 619   (bfd *, struct bfd_link_info *);