bfd/libcoff.h

   1 /* DO NOT EDIT!  -*- buffer-read-only: t -*-  This file is automatically
   2    generated from "libcoff-in.h" and "coffcode.h".
   3    Run "make headers" in your build bfd/ to regenerate.  */
   4
   5 /* BFD COFF object file private structure.
   6    Copyright (C) 1990-2015 Free Software Foundation, Inc.
   7    Written by Cygnus Support.
   8
   9    This file is part of BFD, the Binary File Descriptor library.
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software
  23    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  24    MA 02110-1301, USA.  */
  25
  26 #include "bfdlink.h"
  27 #include "coff-bfd.h"
  28
  29 #ifdef __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 /* Object file tdata; access macros.  */
  34
  35 #define coff_data(bfd)                ((bfd)->tdata.coff_obj_data)
  36 #define obj_pe(bfd)                   (coff_data (bfd)->pe)
  37 #define obj_symbols(bfd)              (coff_data (bfd)->symbols)
  38 #define obj_sym_filepos(bfd)          (coff_data (bfd)->sym_filepos)
  39 #define obj_relocbase(bfd)            (coff_data (bfd)->relocbase)
  40 #define obj_raw_syments(bfd)          (coff_data (bfd)->raw_syments)
  41 #define obj_raw_syment_count(bfd)     (coff_data (bfd)->raw_syment_count)
  42 #define obj_convert(bfd)              (coff_data (bfd)->conversion_table)
  43 #define obj_conv_table_size(bfd)      (coff_data (bfd)->conv_table_size)
  44 #define obj_coff_external_syms(bfd)   (coff_data (bfd)->external_syms)
  45 #define obj_coff_keep_syms(bfd)       (coff_data (bfd)->keep_syms)
  46 #define obj_coff_strings(bfd)         (coff_data (bfd)->strings)
  47 #define obj_coff_strings_len(bfd)     (coff_data (bfd)->strings_len)
  48 #define obj_coff_keep_strings(bfd)    (coff_data (bfd)->keep_strings)
  49 #define obj_coff_sym_hashes(bfd)      (coff_data (bfd)->sym_hashes)
  50 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  51 #define obj_coff_local_toc_table(bfd) (coff_data (bfd)->local_toc_sym_map)
  52
  53 /* `Tdata' information kept for COFF files.  */
  54
  55 typedef struct coff_tdata
  56 {
  57   struct coff_symbol_struct *symbols;   /* Symtab for input bfd.  */
  58   unsigned int *conversion_table;
  59   int conv_table_size;
  60   file_ptr sym_filepos;
  61
  62   struct coff_ptr_struct *raw_syments;
  63   unsigned long raw_syment_count;
  64
  65   /* These are only valid once writing has begun.  */
  66   unsigned long int relocbase;
  67
  68   /* These members communicate important constants about the symbol table
  69      to GDB's symbol-reading code.  These `constants' unfortunately vary
  70      from coff implementation to implementation...  */
  71   unsigned local_n_btmask;
  72   unsigned local_n_btshft;
  73   unsigned local_n_tmask;
  74   unsigned local_n_tshift;
  75   unsigned local_symesz;
  76   unsigned local_auxesz;
  77   unsigned local_linesz;
  78
  79   /* The unswapped external symbols.  May be NULL.  Read by
  80      _bfd_coff_get_external_symbols.  */
  81   void * external_syms;
  82   /* If this is TRUE, the external_syms may not be freed.  */
  83   bfd_boolean keep_syms;
  84
  85   /* The string table.  May be NULL.  Read by
  86      _bfd_coff_read_string_table.  */
  87   char *strings;
  88   /* The length of the strings table.  For error checking.  */
  89   bfd_size_type strings_len;
  90   /* If this is TRUE, the strings may not be freed.  */
  91   bfd_boolean keep_strings;
  92   /* If this is TRUE, the strings have been written out already.  */
  93   bfd_boolean strings_written;
  94
  95   /* Is this a PE format coff file?  */
  96   int pe;
  97   /* Used by the COFF backend linker.  */
  98   struct coff_link_hash_entry **sym_hashes;
  99
 100   /* Used by the pe linker for PowerPC.  */
 101   int *local_toc_sym_map;
 102
 103   struct bfd_link_info *link_info;
 104
 105   /* Used by coff_find_nearest_line.  */
 106   void * line_info;
 107
 108   /* A place to stash dwarf2 info for this bfd.  */
 109   void * dwarf2_find_line_info;
 110
 111   /* The timestamp from the COFF file header.  */
 112   long timestamp;
 113
 114   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 115      used by ARM code.  */
 116   flagword flags;
 117
 118   /* coff-stgo32 EXE stub header after BFD tdata has been allocated.  Its data
 119      is kept in internal_filehdr.go32stub beforehand.  */
 120   char *go32stub;
 121 } coff_data_type;
 122
 123 /* Tdata for pe image files.  */
 124 typedef struct pe_tdata
 125 {
 126   coff_data_type coff;
 127   struct internal_extra_pe_aouthdr pe_opthdr;
 128   int dll;
 129   int has_reloc_section;
 130   int dont_strip_reloc;
 131   bfd_boolean insert_timestamp;
 132   bfd_boolean (*in_reloc_p) (bfd *, reloc_howto_type *);
 133   flagword real_flags;
 134
 135   /* Build-id info.  */
 136   struct
 137   {
 138     bfd_boolean (*after_write_object_contents) (bfd *);
 139     const char *style;
 140     asection *sec;
 141   } build_id;
 142 } pe_data_type;
 143
 144 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 145
 146 /* Tdata for XCOFF files.  */
 147
 148 struct xcoff_tdata
 149 {
 150   /* Basic COFF information.  */
 151   coff_data_type coff;
 152
 153   /* TRUE if this is an XCOFF64 file. */
 154   bfd_boolean xcoff64;
 155
 156   /* TRUE if a large a.out header should be generated.  */
 157   bfd_boolean full_aouthdr;
 158
 159   /* TOC value.  */
 160   bfd_vma toc;
 161
 162   /* Index of section holding TOC.  */
 163   int sntoc;
 164
 165   /* Index of section holding entry point.  */
 166   int snentry;
 167
 168   /* .text alignment from optional header.  */
 169   int text_align_power;
 170
 171   /* .data alignment from optional header.  */
 172   int data_align_power;
 173
 174   /* modtype from optional header.  */
 175   short modtype;
 176
 177   /* cputype from optional header.  */
 178   short cputype;
 179
 180   /* maxdata from optional header.  */
 181   bfd_vma maxdata;
 182
 183   /* maxstack from optional header.  */
 184   bfd_vma maxstack;
 185
 186   /* Used by the XCOFF backend linker.  */
 187   asection **csects;
 188   long *debug_indices;
 189   unsigned int *lineno_counts;
 190   unsigned int import_file_id;
 191 };
 192
 193 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 194
 195 /* We take the address of the first element of an asymbol to ensure that the
 196    macro is only ever applied to an asymbol.  */
 197 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 198
 199 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 200
 201 struct xcoff_section_tdata
 202 {
 203   /* Used for XCOFF csects created by the linker; points to the real
 204      XCOFF section which contains this csect.  */
 205   asection *enclosing;
 206   /* The lineno_count field for the enclosing section, because we are
 207      going to clobber it there.  */
 208   unsigned int lineno_count;
 209   /* The first and last symbol indices for symbols used by this csect.  */
 210   unsigned long first_symndx;
 211   unsigned long last_symndx;
 212 };
 213
 214 /* An accessor macro the xcoff_section_tdata structure.  */
 215 #define xcoff_section_data(abfd, sec) \
 216   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 217
 218 /* Tdata for sections in PE files.  */
 219
 220 struct pei_section_tdata
 221 {
 222   /* The virtual size of the section.  */
 223   bfd_size_type virt_size;
 224   /* The PE section flags.  */
 225   long pe_flags;
 226 };
 227
 228 /* An accessor macro for the pei_section_tdata structure.  */
 229 #define pei_section_data(abfd, sec) \
 230   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 231
 232 /* COFF linker hash table entries.  */
 233
 234 struct coff_link_hash_entry
 235 {
 236   struct bfd_link_hash_entry root;
 237
 238   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 239      there is a reloc against this symbol.  */
 240   long indx;
 241
 242   /* Symbol type.  */
 243   unsigned short type;
 244
 245   /* Symbol class.  */
 246   unsigned char symbol_class;
 247
 248   /* Number of auxiliary entries.  */
 249   char numaux;
 250
 251   /* BFD to take auxiliary entries from.  */
 252   bfd *auxbfd;
 253
 254   /* Pointer to array of auxiliary entries, if any.  */
 255   union internal_auxent *aux;
 256
 257   /* Flag word; legal values follow.  */
 258   unsigned short coff_link_hash_flags;
 259   /* Symbol is a PE section symbol.  */
 260 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 261 };
 262
 263 /* COFF linker hash table.  */
 264
 265 struct coff_link_hash_table
 266 {
 267   struct bfd_link_hash_table root;
 268   /* A pointer to information used to link stabs in sections.  */
 269   struct stab_info stab_info;
 270 };
 271
 272 /* Look up an entry in a COFF linker hash table.  */
 273
 274 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 275   ((struct coff_link_hash_entry *)                                      \
 276    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 277                          (copy), (follow)))
 278
 279 /* Traverse a COFF linker hash table.  */
 280
 281 #define coff_link_hash_traverse(table, func, info)                      \
 282   (bfd_link_hash_traverse                                               \
 283    (&(table)->root,                                                     \
 284     (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
 285     (info)))
 286
 287 /* Get the COFF linker hash table from a link_info structure.  */
 288
 289 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 290
 291 /* Functions in coffgen.c.  */
 292 extern const bfd_target *coff_object_p
 293   (bfd *);
 294 extern struct bfd_section *coff_section_from_bfd_index
 295   (bfd *, int);
 296 extern long coff_get_symtab_upper_bound
 297   (bfd *);
 298 extern long coff_canonicalize_symtab
 299   (bfd *, asymbol **);
 300 extern int coff_count_linenumbers
 301   (bfd *);
 302 extern bfd_boolean coff_renumber_symbols
 303   (bfd *, int *);
 304 extern void coff_mangle_symbols
 305   (bfd *);
 306 extern bfd_boolean coff_write_symbols
 307   (bfd *);
 308 extern bfd_boolean coff_write_alien_symbol
 309   (bfd *, asymbol *, struct internal_syment *, bfd_vma *,
 310    bfd_size_type *, asection **, bfd_size_type *);
 311 extern bfd_boolean coff_write_linenumbers
 312   (bfd *);
 313 extern alent *coff_get_lineno
 314   (bfd *, asymbol *);
 315 extern asymbol *coff_section_symbol
 316   (bfd *, char *);
 317 extern bfd_boolean _bfd_coff_get_external_symbols
 318   (bfd *);
 319 extern const char *_bfd_coff_read_string_table
 320   (bfd *);
 321 extern bfd_boolean _bfd_coff_free_symbols
 322   (bfd *);
 323 extern struct coff_ptr_struct *coff_get_normalized_symtab
 324   (bfd *);
 325 extern long coff_get_reloc_upper_bound
 326   (bfd *, sec_ptr);
 327 extern asymbol *coff_make_empty_symbol
 328   (bfd *);
 329 extern void coff_print_symbol
 330   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 331 extern void coff_get_symbol_info
 332   (bfd *, asymbol *, symbol_info *ret);
 333 #define coff_get_symbol_version_string \
 334   _bfd_nosymbols_get_symbol_version_string
 335 extern bfd_boolean _bfd_coff_is_local_label_name
 336   (bfd *, const char *);
 337 extern asymbol *coff_bfd_make_debug_symbol
 338   (bfd *, void *, unsigned long);
 339 extern bfd_boolean coff_find_nearest_line
 340   (bfd *, asymbol **, asection *, bfd_vma,
 341    const char **, const char **, unsigned int *, unsigned int *);
 342 #define coff_find_line _bfd_nosymbols_find_line
 343 struct dwarf_debug_section;
 344 extern bfd_boolean coff_find_nearest_line_with_names
 345   (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **,
 346    unsigned int *, const struct dwarf_debug_section *);
 347 extern bfd_boolean coff_find_inliner_info
 348   (bfd *, const char **, const char **, unsigned int *);
 349 extern int coff_sizeof_headers
 350   (bfd *, struct bfd_link_info *);
 351 extern bfd_boolean bfd_coff_reloc16_relax_section
 352   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 353 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 354   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 355    bfd_byte *, bfd_boolean, asymbol **);
 356 extern bfd_vma bfd_coff_reloc16_get_value
 357   (arelent *, struct bfd_link_info *, asection *);
 358 extern void bfd_perform_slip
 359   (bfd *, unsigned int, asection *, bfd_vma);
 360
 361 /* Functions and types in cofflink.c.  */
 362
 363 #define STRING_SIZE_SIZE 4
 364
 365 /* We use a hash table to merge identical enum, struct, and union
 366    definitions in the linker.  */
 367
 368 /* Information we keep for a single element (an enum value, a
 369    structure or union field) in the debug merge hash table.  */
 370
 371 struct coff_debug_merge_element
 372 {
 373   /* Next element.  */
 374   struct coff_debug_merge_element *next;
 375
 376   /* Name.  */
 377   const char *name;
 378
 379   /* Type.  */
 380   unsigned int type;
 381
 382   /* Symbol index for complex type.  */
 383   long tagndx;
 384 };
 385
 386 /* A linked list of debug merge entries for a given name.  */
 387
 388 struct coff_debug_merge_type
 389 {
 390   /* Next type with the same name.  */
 391   struct coff_debug_merge_type *next;
 392
 393   /* Class of type.  */
 394   int type_class;
 395
 396   /* Symbol index where this type is defined.  */
 397   long indx;
 398
 399   /* List of elements.  */
 400   struct coff_debug_merge_element *elements;
 401 };
 402
 403 /* Information we store in the debug merge hash table.  */
 404
 405 struct coff_debug_merge_hash_entry
 406 {
 407   struct bfd_hash_entry root;
 408
 409   /* A list of types with this name.  */
 410   struct coff_debug_merge_type *types;
 411 };
 412
 413 /* The debug merge hash table.  */
 414
 415 struct coff_debug_merge_hash_table
 416 {
 417   struct bfd_hash_table root;
 418 };
 419
 420 /* Initialize a COFF debug merge hash table.  */
 421
 422 #define coff_debug_merge_hash_table_init(table) \
 423   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc, \
 424                         sizeof (struct coff_debug_merge_hash_entry)))
 425
 426 /* Free a COFF debug merge hash table.  */
 427
 428 #define coff_debug_merge_hash_table_free(table) \
 429   (bfd_hash_table_free (&(table)->root))
 430
 431 /* Look up an entry in a COFF debug merge hash table.  */
 432
 433 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 434   ((struct coff_debug_merge_hash_entry *) \
 435    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 436
 437 /* Information we keep for each section in the output file when doing
 438    a relocatable link.  */
 439
 440 struct coff_link_section_info
 441 {
 442   /* The relocs to be output.  */
 443   struct internal_reloc *relocs;
 444   /* For each reloc against a global symbol whose index was not known
 445      when the reloc was handled, the global hash table entry.  */
 446   struct coff_link_hash_entry **rel_hashes;
 447 };
 448
 449 /* Information that we pass around while doing the final link step.  */
 450
 451 struct coff_final_link_info
 452 {
 453   /* General link information.  */
 454   struct bfd_link_info *info;
 455   /* Output BFD.  */
 456   bfd *output_bfd;
 457   /* Used to indicate failure in traversal routine.  */
 458   bfd_boolean failed;
 459   /* If doing "task linking" set only during the time when we want the
 460      global symbol writer to convert the storage class of defined global
 461      symbols from global to static. */
 462   bfd_boolean global_to_static;
 463   /* Hash table for long symbol names.  */
 464   struct bfd_strtab_hash *strtab;
 465   /* When doing a relocatable link, an array of information kept for
 466      each output section, indexed by the target_index field.  */
 467   struct coff_link_section_info *section_info;
 468   /* Symbol index of last C_FILE symbol (-1 if none).  */
 469   long last_file_index;
 470   /* Contents of last C_FILE symbol.  */
 471   struct internal_syment last_file;
 472   /* Symbol index of first aux entry of last .bf symbol with an empty
 473      endndx field (-1 if none).  */
 474   long last_bf_index;
 475   /* Contents of last_bf_index aux entry.  */
 476   union internal_auxent last_bf;
 477   /* Hash table used to merge debug information.  */
 478   struct coff_debug_merge_hash_table debug_merge;
 479   /* Buffer large enough to hold swapped symbols of any input file.  */
 480   struct internal_syment *internal_syms;
 481   /* Buffer large enough to hold sections of symbols of any input file.  */
 482   asection **sec_ptrs;
 483   /* Buffer large enough to hold output indices of symbols of any
 484      input file.  */
 485   long *sym_indices;
 486   /* Buffer large enough to hold output symbols for any input file.  */
 487   bfd_byte *outsyms;
 488   /* Buffer large enough to hold external line numbers for any input
 489      section.  */
 490   bfd_byte *linenos;
 491   /* Buffer large enough to hold any input section.  */
 492   bfd_byte *contents;
 493   /* Buffer large enough to hold external relocs of any input section.  */
 494   bfd_byte *external_relocs;
 495   /* Buffer large enough to hold swapped relocs of any input section.  */
 496   struct internal_reloc *internal_relocs;
 497 };
 498
 499 /* Most COFF variants have no way to record the alignment of a
 500    section.  This struct is used to set a specific alignment based on
 501    the name of the section.  */
 502
 503 struct coff_section_alignment_entry
 504 {
 505   /* The section name.  */
 506   const char *name;
 507
 508   /* This is either (unsigned int) -1, indicating that the section
 509      name must match exactly, or it is the number of letters which
 510      must match at the start of the name.  */
 511   unsigned int comparison_length;
 512
 513   /* These macros may be used to fill in the first two fields in a
 514      structure initialization.  */
 515 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 516 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 517
 518   /* Only use this entry if the default section alignment for this
 519      target is at least that much (as a power of two).  If this field
 520      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 521   unsigned int default_alignment_min;
 522
 523   /* Only use this entry if the default section alignment for this
 524      target is no greater than this (as a power of two).  If this
 525      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 526   unsigned int default_alignment_max;
 527
 528 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 529
 530   /* The desired alignment for this section (as a power of two).  */
 531   unsigned int alignment_power;
 532 };
 533
 534 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 535   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 536 extern bfd_boolean _bfd_coff_link_hash_table_init
 537   (struct coff_link_hash_table *, bfd *,
 538    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 539                                struct bfd_hash_table *,
 540                                const char *),
 541    unsigned int);
 542 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 543   (bfd *);
 544 extern const char *_bfd_coff_internal_syment_name
 545   (bfd *, const struct internal_syment *, char *);
 546 extern bfd_boolean _bfd_coff_section_already_linked
 547   (bfd *, asection *, struct bfd_link_info *);
 548 extern bfd_boolean _bfd_coff_link_add_symbols
 549   (bfd *, struct bfd_link_info *);
 550 extern bfd_boolean _bfd_coff_final_link
 551   (bfd *, struct bfd_link_info *);
 552 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 553   (bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
 554    struct internal_reloc *);
 555 extern bfd_boolean _bfd_coff_generic_relocate_section
 556   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 557    struct internal_reloc *, struct internal_syment *, asection **);
 558 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 559   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 560 extern bfd_boolean _bfd_coff_write_global_sym
 561   (struct bfd_hash_entry *, void *);
 562 extern bfd_boolean _bfd_coff_write_task_globals
 563   (struct coff_link_hash_entry *, void *);
 564 extern bfd_boolean _bfd_coff_link_input_bfd
 565   (struct coff_final_link_info *, bfd *);
 566 extern bfd_boolean _bfd_coff_reloc_link_order
 567   (bfd *, struct coff_final_link_info *, asection *,
 568    struct bfd_link_order *);
 569
 570
 571 #define coff_get_section_contents_in_window \
 572   _bfd_generic_get_section_contents_in_window
 573
 574 /* Functions in xcofflink.c.  */
 575
 576 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 577   (bfd *);
 578 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 579   (bfd *, asymbol **);
 580 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 581   (bfd *);
 582 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 583   (bfd *, arelent **, asymbol **);
 584 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 585   (bfd *);
 586 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 587   (bfd *, struct bfd_link_info *);
 588 extern bfd_boolean _bfd_xcoff_bfd_final_link
 589   (bfd *, struct bfd_link_info *);
 590 extern bfd_boolean _bfd_xcoff_define_common_symbol
 591   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 592 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 593   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 594    struct internal_reloc *, struct internal_syment *, asection **);
 595
 596 /* Functions in coff-ppc.c.  FIXME: These are called by pe.em in the
 597    linker, and so should start with bfd and be declared in bfd.h.  */
 598
 599 extern bfd_boolean ppc_allocate_toc_section
 600   (struct bfd_link_info *);
 601 extern bfd_boolean ppc_process_before_allocation
 602   (bfd *, struct bfd_link_info *);
 603 /* Extracted from coffcode.h.  */
 604
 605 typedef struct coff_ptr_struct
 606 {
 607   /* Remembers the offset from the first symbol in the file for
 608      this symbol. Generated by coff_renumber_symbols.  */
 609   unsigned int offset;
 610
 611   /* Should the value of this symbol be renumbered.  Used for
 612      XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 613   unsigned int fix_value : 1;
 614
 615   /* Should the tag field of this symbol be renumbered.
 616      Created by coff_pointerize_aux.  */
 617   unsigned int fix_tag : 1;
 618
 619   /* Should the endidx field of this symbol be renumbered.
 620      Created by coff_pointerize_aux.  */
 621   unsigned int fix_end : 1;
 622
 623   /* Should the x_csect.x_scnlen field be renumbered.
 624      Created by coff_pointerize_aux.  */
 625   unsigned int fix_scnlen : 1;
 626
 627   /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 628      index into the line number entries.  Set by coff_slurp_symbol_table.  */
 629   unsigned int fix_line : 1;
 630
 631   /* The container for the symbol structure as read and translated
 632      from the file.  */
 633   union
 634   {
 635     union internal_auxent auxent;
 636     struct internal_syment syment;
 637   } u;
 638
 639  /* Selector for the union above.  */
 640  bfd_boolean is_sym;
 641 } combined_entry_type;
 642
 643
 644 /* Each canonical asymbol really looks like this: */
 645
 646 typedef struct coff_symbol_struct
 647 {
 648   /* The actual symbol which the rest of BFD works with */
 649   asymbol symbol;
 650
 651   /* A pointer to the hidden information for this symbol */
 652   combined_entry_type *native;
 653
 654   /* A pointer to the linenumber information for this symbol */
 655   struct lineno_cache_entry *lineno;
 656
 657   /* Have the line numbers been relocated yet ? */
 658   bfd_boolean done_lineno;
 659 } coff_symbol_type;
 660 /* COFF symbol classifications.  */
 661
 662 enum coff_symbol_classification
 663 {
 664   /* Global symbol.  */
 665   COFF_SYMBOL_GLOBAL,
 666   /* Common symbol.  */
 667   COFF_SYMBOL_COMMON,
 668   /* Undefined symbol.  */
 669   COFF_SYMBOL_UNDEFINED,
 670   /* Local symbol.  */
 671   COFF_SYMBOL_LOCAL,
 672   /* PE section symbol.  */
 673   COFF_SYMBOL_PE_SECTION
 674 };
 675
 676 typedef struct
 677 {
 678   void (*_bfd_coff_swap_aux_in)
 679     (bfd *, void *, int, int, int, int, void *);
 680
 681   void (*_bfd_coff_swap_sym_in)
 682     (bfd *, void *, void *);
 683
 684   void (*_bfd_coff_swap_lineno_in)
 685     (bfd *, void *, void *);
 686
 687   unsigned int (*_bfd_coff_swap_aux_out)
 688     (bfd *, void *, int, int, int, int, void *);
 689
 690   unsigned int (*_bfd_coff_swap_sym_out)
 691     (bfd *, void *, void *);
 692
 693   unsigned int (*_bfd_coff_swap_lineno_out)
 694     (bfd *, void *, void *);
 695
 696   unsigned int (*_bfd_coff_swap_reloc_out)
 697     (bfd *, void *, void *);
 698
 699   unsigned int (*_bfd_coff_swap_filehdr_out)
 700     (bfd *, void *, void *);
 701
 702   unsigned int (*_bfd_coff_swap_aouthdr_out)
 703     (bfd *, void *, void *);
 704
 705   unsigned int (*_bfd_coff_swap_scnhdr_out)
 706     (bfd *, void *, void *);
 707
 708   unsigned int _bfd_filhsz;
 709   unsigned int _bfd_aoutsz;
 710   unsigned int _bfd_scnhsz;
 711   unsigned int _bfd_symesz;
 712   unsigned int _bfd_auxesz;
 713   unsigned int _bfd_relsz;
 714   unsigned int _bfd_linesz;
 715   unsigned int _bfd_filnmlen;
 716   bfd_boolean _bfd_coff_long_filenames;
 717
 718   bfd_boolean _bfd_coff_long_section_names;
 719   bfd_boolean (*_bfd_coff_set_long_section_names)
 720     (bfd *, int);
 721
 722   unsigned int _bfd_coff_default_section_alignment_power;
 723   bfd_boolean _bfd_coff_force_symnames_in_strings;
 724   unsigned int _bfd_coff_debug_string_prefix_length;
 725   unsigned int _bfd_coff_max_nscns;
 726
 727   void (*_bfd_coff_swap_filehdr_in)
 728     (bfd *, void *, void *);
 729
 730   void (*_bfd_coff_swap_aouthdr_in)
 731     (bfd *, void *, void *);
 732
 733   void (*_bfd_coff_swap_scnhdr_in)
 734     (bfd *, void *, void *);
 735
 736   void (*_bfd_coff_swap_reloc_in)
 737     (bfd *abfd, void *, void *);
 738
 739   bfd_boolean (*_bfd_coff_bad_format_hook)
 740     (bfd *, void *);
 741
 742   bfd_boolean (*_bfd_coff_set_arch_mach_hook)
 743     (bfd *, void *);
 744
 745   void * (*_bfd_coff_mkobject_hook)
 746     (bfd *, void *, void *);
 747
 748   bfd_boolean (*_bfd_styp_to_sec_flags_hook)
 749     (bfd *, void *, const char *, asection *, flagword *);
 750
 751   void (*_bfd_set_alignment_hook)
 752     (bfd *, asection *, void *);
 753
 754   bfd_boolean (*_bfd_coff_slurp_symbol_table)
 755     (bfd *);
 756
 757   bfd_boolean (*_bfd_coff_symname_in_debug)
 758     (bfd *, struct internal_syment *);
 759
 760   bfd_boolean (*_bfd_coff_pointerize_aux_hook)
 761     (bfd *, combined_entry_type *, combined_entry_type *,
 762             unsigned int, combined_entry_type *);
 763
 764   bfd_boolean (*_bfd_coff_print_aux)
 765     (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 766             combined_entry_type *, unsigned int);
 767
 768   void (*_bfd_coff_reloc16_extra_cases)
 769     (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 770            bfd_byte *, unsigned int *, unsigned int *);
 771
 772   int (*_bfd_coff_reloc16_estimate)
 773     (bfd *, asection *, arelent *, unsigned int,
 774             struct bfd_link_info *);
 775
 776   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 777     (bfd *, struct internal_syment *);
 778
 779   bfd_boolean (*_bfd_coff_compute_section_file_positions)
 780     (bfd *);
 781
 782   bfd_boolean (*_bfd_coff_start_final_link)
 783     (bfd *, struct bfd_link_info *);
 784
 785   bfd_boolean (*_bfd_coff_relocate_section)
 786     (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 787             struct internal_reloc *, struct internal_syment *, asection **);
 788
 789   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 790     (bfd *, asection *, struct internal_reloc *,
 791             struct coff_link_hash_entry *, struct internal_syment *,
 792             bfd_vma *);
 793
 794   bfd_boolean (*_bfd_coff_adjust_symndx)
 795     (bfd *, struct bfd_link_info *, bfd *, asection *,
 796             struct internal_reloc *, bfd_boolean *);
 797
 798   bfd_boolean (*_bfd_coff_link_add_one_symbol)
 799     (struct bfd_link_info *, bfd *, const char *, flagword,
 800             asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
 801             struct bfd_link_hash_entry **);
 802
 803   bfd_boolean (*_bfd_coff_link_output_has_begun)
 804     (bfd *, struct coff_final_link_info *);
 805
 806   bfd_boolean (*_bfd_coff_final_link_postscript)
 807     (bfd *, struct coff_final_link_info *);
 808
 809   bfd_boolean (*_bfd_coff_print_pdata)
 810     (bfd *, void *);
 811
 812 } bfd_coff_backend_data;
 813
 814 #define coff_backend_info(abfd) \
 815   ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 816
 817 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 818   ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 819
 820 #define bfd_coff_swap_sym_in(a,e,i) \
 821   ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 822
 823 #define bfd_coff_swap_lineno_in(a,e,i) \
 824   ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 825
 826 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 827   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 828
 829 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 830   ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 831
 832 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 833   ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 834
 835 #define bfd_coff_swap_sym_out(abfd, i,o) \
 836   ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 837
 838 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 839   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 840
 841 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 842   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 843
 844 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 845   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 846
 847 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 848 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 849 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 850 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 851 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 852 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 853 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 854 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 855 #define bfd_coff_long_filenames(abfd) \
 856   (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 857 #define bfd_coff_long_section_names(abfd) \
 858   (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 859 #define bfd_coff_set_long_section_names(abfd, enable) \
 860   ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
 861 #define bfd_coff_default_section_alignment_power(abfd) \
 862   (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 863 #define bfd_coff_max_nscns(abfd) \
 864   (coff_backend_info (abfd)->_bfd_coff_max_nscns)
 865
 866 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 867   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 868
 869 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 870   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 871
 872 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 873   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 874
 875 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 876   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 877
 878 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 879   ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 880
 881 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 882   ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 883 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 884   ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
 885    (abfd, filehdr, aouthdr))
 886
 887 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
 888   ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 889    (abfd, scnhdr, name, section, flags_ptr))
 890
 891 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 892   ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 893
 894 #define bfd_coff_slurp_symbol_table(abfd)\
 895   ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 896
 897 #define bfd_coff_symname_in_debug(abfd, sym)\
 898   ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 899
 900 #define bfd_coff_force_symnames_in_strings(abfd)\
 901   (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 902
 903 #define bfd_coff_debug_string_prefix_length(abfd)\
 904   (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 905
 906 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 907   ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 908    (abfd, file, base, symbol, aux, indaux))
 909
 910 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
 911                                      reloc, data, src_ptr, dst_ptr)\
 912   ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 913    (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 914
 915 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 916   ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 917    (abfd, section, reloc, shrink, link_info))
 918
 919 #define bfd_coff_classify_symbol(abfd, sym)\
 920   ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 921    (abfd, sym))
 922
 923 #define bfd_coff_compute_section_file_positions(abfd)\
 924   ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 925    (abfd))
 926
 927 #define bfd_coff_start_final_link(obfd, info)\
 928   ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 929    (obfd, info))
 930 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
 931   ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
 932    (obfd, info, ibfd, o, con, rel, isyms, secs))
 933 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
 934   ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
 935    (abfd, sec, rel, h, sym, addendp))
 936 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
 937   ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
 938    (obfd, info, ibfd, sec, rel, adjustedp))
 939 #define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
 940                                      value, string, cp, coll, hashp)\
 941   ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 942    (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 943
 944 #define bfd_coff_link_output_has_begun(a,p) \
 945   ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
 946 #define bfd_coff_final_link_postscript(a,p) \
 947   ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
 948
 949 #define bfd_coff_have_print_pdata(a) \
 950   (coff_backend_info (a)->_bfd_coff_print_pdata)
 951 #define bfd_coff_print_pdata(a,p) \
 952   ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
 953
 954 /* Macro: Returns true if the bfd is a PE executable as opposed to a
 955    PE object file.  */
 956 #define bfd_pei_p(abfd) \
 957   (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))
 958 #ifdef __cplusplus
 959 }
 960 #endif