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) 1990-2014 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
  28 /* Object file tdata; access macros.  */
  29
  30 #define coff_data(bfd)                ((bfd)->tdata.coff_obj_data)
  31 #define obj_pe(bfd)                   (coff_data (bfd)->pe)
  32 #define obj_symbols(bfd)              (coff_data (bfd)->symbols)
  33 #define obj_sym_filepos(bfd)          (coff_data (bfd)->sym_filepos)
  34 #define obj_relocbase(bfd)            (coff_data (bfd)->relocbase)
  35 #define obj_raw_syments(bfd)          (coff_data (bfd)->raw_syments)
  36 #define obj_raw_syment_count(bfd)     (coff_data (bfd)->raw_syment_count)
  37 #define obj_convert(bfd)              (coff_data (bfd)->conversion_table)
  38 #define obj_conv_table_size(bfd)      (coff_data (bfd)->conv_table_size)
  39 #define obj_coff_external_syms(bfd)   (coff_data (bfd)->external_syms)
  40 #define obj_coff_keep_syms(bfd)       (coff_data (bfd)->keep_syms)
  41 #define obj_coff_strings(bfd)         (coff_data (bfd)->strings)
  42 #define obj_coff_strings_len(bfd)     (coff_data (bfd)->strings_len)
  43 #define obj_coff_keep_strings(bfd)    (coff_data (bfd)->keep_strings)
  44 #define obj_coff_sym_hashes(bfd)      (coff_data (bfd)->sym_hashes)
  45 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  46 #define obj_coff_local_toc_table(bfd) (coff_data (bfd)->local_toc_sym_map)
  47
  48 /* `Tdata' information kept for COFF files.  */
  49
  50 typedef struct coff_tdata
  51 {
  52   struct coff_symbol_struct *symbols;   /* Symtab for input bfd.  */
  53   unsigned int *conversion_table;
  54   int conv_table_size;
  55   file_ptr sym_filepos;
  56
  57   struct coff_ptr_struct *raw_syments;
  58   unsigned long raw_syment_count;
  59
  60   /* These are only valid once writing has begun.  */
  61   unsigned long int relocbase;
  62
  63   /* These members communicate important constants about the symbol table
  64      to GDB's symbol-reading code.  These `constants' unfortunately vary
  65      from coff implementation to implementation...  */
  66   unsigned local_n_btmask;
  67   unsigned local_n_btshft;
  68   unsigned local_n_tmask;
  69   unsigned local_n_tshift;
  70   unsigned local_symesz;
  71   unsigned local_auxesz;
  72   unsigned local_linesz;
  73
  74   /* The unswapped external symbols.  May be NULL.  Read by
  75      _bfd_coff_get_external_symbols.  */
  76   void * external_syms;
  77   /* If this is TRUE, the external_syms may not be freed.  */
  78   bfd_boolean keep_syms;
  79
  80   /* The string table.  May be NULL.  Read by
  81      _bfd_coff_read_string_table.  */
  82   char *strings;
  83   /* The length of the strings table.  For error checking.  */
  84   bfd_size_type strings_len;
  85   /* If this is TRUE, the strings may not be freed.  */
  86   bfd_boolean keep_strings;
  87   /* If this is TRUE, the strings have been written out already.  */
  88   bfd_boolean strings_written;
  89
  90   /* Is this a PE format coff file?  */
  91   int pe;
  92   /* Used by the COFF backend linker.  */
  93   struct coff_link_hash_entry **sym_hashes;
  94
  95   /* Used by the pe linker for PowerPC.  */
  96   int *local_toc_sym_map;
  97
  98   struct bfd_link_info *link_info;
  99
 100   /* Used by coff_find_nearest_line.  */
 101   void * line_info;
 102
 103   /* A place to stash dwarf2 info for this bfd.  */
 104   void * dwarf2_find_line_info;
 105
 106   /* The timestamp from the COFF file header.  */
 107   long timestamp;
 108
 109   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 110      used by ARM code.  */
 111   flagword flags;
 112
 113   /* coff-stgo32 EXE stub header after BFD tdata has been allocated.  Its data
 114      is kept in internal_filehdr.go32stub beforehand.  */
 115   char *go32stub;
 116 } coff_data_type;
 117
 118 /* Tdata for pe image files.  */
 119 typedef struct pe_tdata
 120 {
 121   coff_data_type coff;
 122   struct internal_extra_pe_aouthdr pe_opthdr;
 123   int dll;
 124   int has_reloc_section;
 125   int dont_strip_reloc;
 126   bfd_boolean insert_timestamp;
 127   bfd_boolean (*in_reloc_p) (bfd *, reloc_howto_type *);
 128   flagword real_flags;
 129
 130   /* Build-id info.  */
 131   struct
 132   {
 133     bfd_boolean (*after_write_object_contents) (bfd *);
 134     const char *style;
 135     asection *sec;
 136   } build_id;
 137 } pe_data_type;
 138
 139 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 140
 141 /* Tdata for XCOFF files.  */
 142
 143 struct xcoff_tdata
 144 {
 145   /* Basic COFF information.  */
 146   coff_data_type coff;
 147
 148   /* TRUE if this is an XCOFF64 file. */
 149   bfd_boolean xcoff64;
 150
 151   /* TRUE if a large a.out header should be generated.  */
 152   bfd_boolean full_aouthdr;
 153
 154   /* TOC value.  */
 155   bfd_vma toc;
 156
 157   /* Index of section holding TOC.  */
 158   int sntoc;
 159
 160   /* Index of section holding entry point.  */
 161   int snentry;
 162
 163   /* .text alignment from optional header.  */
 164   int text_align_power;
 165
 166   /* .data alignment from optional header.  */
 167   int data_align_power;
 168
 169   /* modtype from optional header.  */
 170   short modtype;
 171
 172   /* cputype from optional header.  */
 173   short cputype;
 174
 175   /* maxdata from optional header.  */
 176   bfd_vma maxdata;
 177
 178   /* maxstack from optional header.  */
 179   bfd_vma maxstack;
 180
 181   /* Used by the XCOFF backend linker.  */
 182   asection **csects;
 183   long *debug_indices;
 184   unsigned int *lineno_counts;
 185   unsigned int import_file_id;
 186 };
 187
 188 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 189
 190 /* We take the address of the first element of an asymbol to ensure that the
 191    macro is only ever applied to an asymbol.  */
 192 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 193
 194 /* The used_by_bfd field of a section may be set to a pointer to this
 195    structure.  */
 196
 197 struct coff_section_tdata
 198 {
 199   /* The relocs, swapped into COFF internal form.  This may be NULL.  */
 200   struct internal_reloc *relocs;
 201   /* If this is TRUE, the relocs entry may not be freed.  */
 202   bfd_boolean keep_relocs;
 203   /* The section contents.  This may be NULL.  */
 204   bfd_byte *contents;
 205   /* If this is TRUE, the contents entry may not be freed.  */
 206   bfd_boolean keep_contents;
 207   /* Information cached by coff_find_nearest_line.  */
 208   bfd_vma offset;
 209   unsigned int i;
 210   const char *function;
 211   /* Optional information about a COMDAT entry; NULL if not COMDAT. */
 212   struct coff_comdat_info *comdat;
 213   int line_base;
 214   /* A pointer used for .stab linking optimizations.  */
 215   void * stab_info;
 216   /* Available for individual backends.  */
 217   void * tdata;
 218 };
 219
 220 /* An accessor macro for the coff_section_tdata structure.  */
 221 #define coff_section_data(abfd, sec) \
 222   ((struct coff_section_tdata *) (sec)->used_by_bfd)
 223
 224 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 225
 226 struct xcoff_section_tdata
 227 {
 228   /* Used for XCOFF csects created by the linker; points to the real
 229      XCOFF section which contains this csect.  */
 230   asection *enclosing;
 231   /* The lineno_count field for the enclosing section, because we are
 232      going to clobber it there.  */
 233   unsigned int lineno_count;
 234   /* The first and last symbol indices for symbols used by this csect.  */
 235   unsigned long first_symndx;
 236   unsigned long last_symndx;
 237 };
 238
 239 /* An accessor macro the xcoff_section_tdata structure.  */
 240 #define xcoff_section_data(abfd, sec) \
 241   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 242
 243 /* Tdata for sections in PE files.  */
 244
 245 struct pei_section_tdata
 246 {
 247   /* The virtual size of the section.  */
 248   bfd_size_type virt_size;
 249   /* The PE section flags.  */
 250   long pe_flags;
 251 };
 252
 253 /* An accessor macro for the pei_section_tdata structure.  */
 254 #define pei_section_data(abfd, sec) \
 255   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 256
 257 /* COFF linker hash table entries.  */
 258
 259 struct coff_link_hash_entry
 260 {
 261   struct bfd_link_hash_entry root;
 262
 263   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 264      there is a reloc against this symbol.  */
 265   long indx;
 266
 267   /* Symbol type.  */
 268   unsigned short type;
 269
 270   /* Symbol class.  */
 271   unsigned char symbol_class;
 272
 273   /* Number of auxiliary entries.  */
 274   char numaux;
 275
 276   /* BFD to take auxiliary entries from.  */
 277   bfd *auxbfd;
 278
 279   /* Pointer to array of auxiliary entries, if any.  */
 280   union internal_auxent *aux;
 281
 282   /* Flag word; legal values follow.  */
 283   unsigned short coff_link_hash_flags;
 284   /* Symbol is a PE section symbol.  */
 285 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 286 };
 287
 288 /* COFF linker hash table.  */
 289
 290 struct coff_link_hash_table
 291 {
 292   struct bfd_link_hash_table root;
 293   /* A pointer to information used to link stabs in sections.  */
 294   struct stab_info stab_info;
 295 };
 296
 297 /* Look up an entry in a COFF linker hash table.  */
 298
 299 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 300   ((struct coff_link_hash_entry *)                                      \
 301    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 302                          (copy), (follow)))
 303
 304 /* Traverse a COFF linker hash table.  */
 305
 306 #define coff_link_hash_traverse(table, func, info)                      \
 307   (bfd_link_hash_traverse                                               \
 308    (&(table)->root,                                                     \
 309     (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
 310     (info)))
 311
 312 /* Get the COFF linker hash table from a link_info structure.  */
 313
 314 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 315
 316 /* Functions in coffgen.c.  */
 317 extern const bfd_target *coff_object_p
 318   (bfd *);
 319 extern struct bfd_section *coff_section_from_bfd_index
 320   (bfd *, int);
 321 extern long coff_get_symtab_upper_bound
 322   (bfd *);
 323 extern long coff_canonicalize_symtab
 324   (bfd *, asymbol **);
 325 extern int coff_count_linenumbers
 326   (bfd *);
 327 extern struct coff_symbol_struct *coff_symbol_from
 328   (bfd *, asymbol *);
 329 extern bfd_boolean coff_renumber_symbols
 330   (bfd *, int *);
 331 extern void coff_mangle_symbols
 332   (bfd *);
 333 extern bfd_boolean coff_write_symbols
 334   (bfd *);
 335 extern bfd_boolean coff_write_alien_symbol
 336   (bfd *, asymbol *, struct internal_syment *, bfd_vma *,
 337    bfd_size_type *, asection **, bfd_size_type *);
 338 extern bfd_boolean coff_write_linenumbers
 339   (bfd *);
 340 extern alent *coff_get_lineno
 341   (bfd *, asymbol *);
 342 extern asymbol *coff_section_symbol
 343   (bfd *, char *);
 344 extern bfd_boolean _bfd_coff_get_external_symbols
 345   (bfd *);
 346 extern const char *_bfd_coff_read_string_table
 347   (bfd *);
 348 extern bfd_boolean _bfd_coff_free_symbols
 349   (bfd *);
 350 extern struct coff_ptr_struct *coff_get_normalized_symtab
 351   (bfd *);
 352 extern long coff_get_reloc_upper_bound
 353   (bfd *, sec_ptr);
 354 extern asymbol *coff_make_empty_symbol
 355   (bfd *);
 356 extern void coff_print_symbol
 357   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 358 extern void coff_get_symbol_info
 359   (bfd *, asymbol *, symbol_info *ret);
 360 #define coff_get_symbol_version_string \
 361   _bfd_nosymbols_get_symbol_version_string
 362 extern bfd_boolean _bfd_coff_is_local_label_name
 363   (bfd *, const char *);
 364 extern asymbol *coff_bfd_make_debug_symbol
 365   (bfd *, void *, unsigned long);
 366 extern bfd_boolean coff_find_nearest_line
 367   (bfd *, asymbol **, asection *, bfd_vma,
 368    const char **, const char **, unsigned int *, unsigned int *);
 369 #define coff_find_line _bfd_nosymbols_find_line
 370 struct dwarf_debug_section;
 371 extern bfd_boolean coff_find_nearest_line_with_names
 372   (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **,
 373    unsigned int *, const struct dwarf_debug_section *);
 374 extern bfd_boolean coff_find_inliner_info
 375   (bfd *, const char **, const char **, unsigned int *);
 376 extern int coff_sizeof_headers
 377   (bfd *, struct bfd_link_info *);
 378 extern bfd_boolean bfd_coff_reloc16_relax_section
 379   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 380 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 381   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 382    bfd_byte *, bfd_boolean, asymbol **);
 383 extern bfd_vma bfd_coff_reloc16_get_value
 384   (arelent *, struct bfd_link_info *, asection *);
 385 extern void bfd_perform_slip
 386   (bfd *, unsigned int, asection *, bfd_vma);
 387
 388 /* Functions and types in cofflink.c.  */
 389
 390 #define STRING_SIZE_SIZE 4
 391
 392 /* We use a hash table to merge identical enum, struct, and union
 393    definitions in the linker.  */
 394
 395 /* Information we keep for a single element (an enum value, a
 396    structure or union field) in the debug merge hash table.  */
 397
 398 struct coff_debug_merge_element
 399 {
 400   /* Next element.  */
 401   struct coff_debug_merge_element *next;
 402
 403   /* Name.  */
 404   const char *name;
 405
 406   /* Type.  */
 407   unsigned int type;
 408
 409   /* Symbol index for complex type.  */
 410   long tagndx;
 411 };
 412
 413 /* A linked list of debug merge entries for a given name.  */
 414
 415 struct coff_debug_merge_type
 416 {
 417   /* Next type with the same name.  */
 418   struct coff_debug_merge_type *next;
 419
 420   /* Class of type.  */
 421   int type_class;
 422
 423   /* Symbol index where this type is defined.  */
 424   long indx;
 425
 426   /* List of elements.  */
 427   struct coff_debug_merge_element *elements;
 428 };
 429
 430 /* Information we store in the debug merge hash table.  */
 431
 432 struct coff_debug_merge_hash_entry
 433 {
 434   struct bfd_hash_entry root;
 435
 436   /* A list of types with this name.  */
 437   struct coff_debug_merge_type *types;
 438 };
 439
 440 /* The debug merge hash table.  */
 441
 442 struct coff_debug_merge_hash_table
 443 {
 444   struct bfd_hash_table root;
 445 };
 446
 447 /* Initialize a COFF debug merge hash table.  */
 448
 449 #define coff_debug_merge_hash_table_init(table) \
 450   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc, \
 451                         sizeof (struct coff_debug_merge_hash_entry)))
 452
 453 /* Free a COFF debug merge hash table.  */
 454
 455 #define coff_debug_merge_hash_table_free(table) \
 456   (bfd_hash_table_free (&(table)->root))
 457
 458 /* Look up an entry in a COFF debug merge hash table.  */
 459
 460 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 461   ((struct coff_debug_merge_hash_entry *) \
 462    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 463
 464 /* Information we keep for each section in the output file when doing
 465    a relocatable link.  */
 466
 467 struct coff_link_section_info
 468 {
 469   /* The relocs to be output.  */
 470   struct internal_reloc *relocs;
 471   /* For each reloc against a global symbol whose index was not known
 472      when the reloc was handled, the global hash table entry.  */
 473   struct coff_link_hash_entry **rel_hashes;
 474 };
 475
 476 /* Information that we pass around while doing the final link step.  */
 477
 478 struct coff_final_link_info
 479 {
 480   /* General link information.  */
 481   struct bfd_link_info *info;
 482   /* Output BFD.  */
 483   bfd *output_bfd;
 484   /* Used to indicate failure in traversal routine.  */
 485   bfd_boolean failed;
 486   /* If doing "task linking" set only during the time when we want the
 487      global symbol writer to convert the storage class of defined global
 488      symbols from global to static. */
 489   bfd_boolean global_to_static;
 490   /* Hash table for long symbol names.  */
 491   struct bfd_strtab_hash *strtab;
 492   /* When doing a relocatable link, an array of information kept for
 493      each output section, indexed by the target_index field.  */
 494   struct coff_link_section_info *section_info;
 495   /* Symbol index of last C_FILE symbol (-1 if none).  */
 496   long last_file_index;
 497   /* Contents of last C_FILE symbol.  */
 498   struct internal_syment last_file;
 499   /* Symbol index of first aux entry of last .bf symbol with an empty
 500      endndx field (-1 if none).  */
 501   long last_bf_index;
 502   /* Contents of last_bf_index aux entry.  */
 503   union internal_auxent last_bf;
 504   /* Hash table used to merge debug information.  */
 505   struct coff_debug_merge_hash_table debug_merge;
 506   /* Buffer large enough to hold swapped symbols of any input file.  */
 507   struct internal_syment *internal_syms;
 508   /* Buffer large enough to hold sections of symbols of any input file.  */
 509   asection **sec_ptrs;
 510   /* Buffer large enough to hold output indices of symbols of any
 511      input file.  */
 512   long *sym_indices;
 513   /* Buffer large enough to hold output symbols for any input file.  */
 514   bfd_byte *outsyms;
 515   /* Buffer large enough to hold external line numbers for any input
 516      section.  */
 517   bfd_byte *linenos;
 518   /* Buffer large enough to hold any input section.  */
 519   bfd_byte *contents;
 520   /* Buffer large enough to hold external relocs of any input section.  */
 521   bfd_byte *external_relocs;
 522   /* Buffer large enough to hold swapped relocs of any input section.  */
 523   struct internal_reloc *internal_relocs;
 524 };
 525
 526 /* Most COFF variants have no way to record the alignment of a
 527    section.  This struct is used to set a specific alignment based on
 528    the name of the section.  */
 529
 530 struct coff_section_alignment_entry
 531 {
 532   /* The section name.  */
 533   const char *name;
 534
 535   /* This is either (unsigned int) -1, indicating that the section
 536      name must match exactly, or it is the number of letters which
 537      must match at the start of the name.  */
 538   unsigned int comparison_length;
 539
 540   /* These macros may be used to fill in the first two fields in a
 541      structure initialization.  */
 542 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 543 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 544
 545   /* Only use this entry if the default section alignment for this
 546      target is at least that much (as a power of two).  If this field
 547      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 548   unsigned int default_alignment_min;
 549
 550   /* Only use this entry if the default section alignment for this
 551      target is no greater than this (as a power of two).  If this
 552      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 553   unsigned int default_alignment_max;
 554
 555 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 556
 557   /* The desired alignment for this section (as a power of two).  */
 558   unsigned int alignment_power;
 559 };
 560
 561 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 562   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 563 extern bfd_boolean _bfd_coff_link_hash_table_init
 564   (struct coff_link_hash_table *, bfd *,
 565    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 566                                struct bfd_hash_table *,
 567                                const char *),
 568    unsigned int);
 569 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 570   (bfd *);
 571 extern const char *_bfd_coff_internal_syment_name
 572   (bfd *, const struct internal_syment *, char *);
 573 extern bfd_boolean _bfd_coff_section_already_linked
 574   (bfd *, asection *, struct bfd_link_info *);
 575 extern bfd_boolean _bfd_coff_link_add_symbols
 576   (bfd *, struct bfd_link_info *);
 577 extern bfd_boolean _bfd_coff_final_link
 578   (bfd *, struct bfd_link_info *);
 579 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 580   (bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
 581    struct internal_reloc *);
 582 extern bfd_boolean _bfd_coff_generic_relocate_section
 583   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 584    struct internal_reloc *, struct internal_syment *, asection **);
 585 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 586   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 587 extern bfd_boolean _bfd_coff_write_global_sym
 588   (struct bfd_hash_entry *, void *);
 589 extern bfd_boolean _bfd_coff_write_task_globals
 590   (struct coff_link_hash_entry *, void *);
 591 extern bfd_boolean _bfd_coff_link_input_bfd
 592   (struct coff_final_link_info *, bfd *);
 593 extern bfd_boolean _bfd_coff_reloc_link_order
 594   (bfd *, struct coff_final_link_info *, asection *,
 595    struct bfd_link_order *);
 596
 597
 598 #define coff_get_section_contents_in_window \
 599   _bfd_generic_get_section_contents_in_window
 600
 601 /* Functions in xcofflink.c.  */
 602
 603 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 604   (bfd *);
 605 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 606   (bfd *, asymbol **);
 607 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 608   (bfd *);
 609 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 610   (bfd *, arelent **, asymbol **);
 611 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 612   (bfd *);
 613 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 614   (bfd *, struct bfd_link_info *);
 615 extern bfd_boolean _bfd_xcoff_bfd_final_link
 616   (bfd *, struct bfd_link_info *);
 617 extern bfd_boolean _bfd_xcoff_define_common_symbol
 618   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 619 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 620   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 621    struct internal_reloc *, struct internal_syment *, asection **);
 622
 623 /* Functions in coff-ppc.c.  FIXME: These are called by pe.em in the
 624    linker, and so should start with bfd and be declared in bfd.h.  */
 625
 626 extern bfd_boolean ppc_allocate_toc_section
 627   (struct bfd_link_info *);
 628 extern bfd_boolean ppc_process_before_allocation
 629   (bfd *, struct bfd_link_info *);
 630 /* Extracted from coffcode.h.  */
 631
 632 typedef struct coff_ptr_struct
 633 {
 634   /* Remembers the offset from the first symbol in the file for
 635      this symbol. Generated by coff_renumber_symbols.  */
 636   unsigned int offset;
 637
 638   /* Should the value of this symbol be renumbered.  Used for
 639      XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 640   unsigned int fix_value : 1;
 641
 642   /* Should the tag field of this symbol be renumbered.
 643      Created by coff_pointerize_aux.  */
 644   unsigned int fix_tag : 1;
 645
 646   /* Should the endidx field of this symbol be renumbered.
 647      Created by coff_pointerize_aux.  */
 648   unsigned int fix_end : 1;
 649
 650   /* Should the x_csect.x_scnlen field be renumbered.
 651      Created by coff_pointerize_aux.  */
 652   unsigned int fix_scnlen : 1;
 653
 654   /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 655      index into the line number entries.  Set by coff_slurp_symbol_table.  */
 656   unsigned int fix_line : 1;
 657
 658   /* The container for the symbol structure as read and translated
 659      from the file.  */
 660   union
 661   {
 662     union internal_auxent auxent;
 663     struct internal_syment syment;
 664   } u;
 665
 666  /* Selector for the union above.  */
 667  bfd_boolean is_sym;
 668 } combined_entry_type;
 669
 670
 671 /* Each canonical asymbol really looks like this: */
 672
 673 typedef struct coff_symbol_struct
 674 {
 675   /* The actual symbol which the rest of BFD works with */
 676   asymbol symbol;
 677
 678   /* A pointer to the hidden information for this symbol */
 679   combined_entry_type *native;
 680
 681   /* A pointer to the linenumber information for this symbol */
 682   struct lineno_cache_entry *lineno;
 683
 684   /* Have the line numbers been relocated yet ? */
 685   bfd_boolean done_lineno;
 686 } coff_symbol_type;
 687 /* COFF symbol classifications.  */
 688
 689 enum coff_symbol_classification
 690 {
 691   /* Global symbol.  */
 692   COFF_SYMBOL_GLOBAL,
 693   /* Common symbol.  */
 694   COFF_SYMBOL_COMMON,
 695   /* Undefined symbol.  */
 696   COFF_SYMBOL_UNDEFINED,
 697   /* Local symbol.  */
 698   COFF_SYMBOL_LOCAL,
 699   /* PE section symbol.  */
 700   COFF_SYMBOL_PE_SECTION
 701 };
 702
 703 typedef struct
 704 {
 705   void (*_bfd_coff_swap_aux_in)
 706     (bfd *, void *, int, int, int, int, void *);
 707
 708   void (*_bfd_coff_swap_sym_in)
 709     (bfd *, void *, void *);
 710
 711   void (*_bfd_coff_swap_lineno_in)
 712     (bfd *, void *, void *);
 713
 714   unsigned int (*_bfd_coff_swap_aux_out)
 715     (bfd *, void *, int, int, int, int, void *);
 716
 717   unsigned int (*_bfd_coff_swap_sym_out)
 718     (bfd *, void *, void *);
 719
 720   unsigned int (*_bfd_coff_swap_lineno_out)
 721     (bfd *, void *, void *);
 722
 723   unsigned int (*_bfd_coff_swap_reloc_out)
 724     (bfd *, void *, void *);
 725
 726   unsigned int (*_bfd_coff_swap_filehdr_out)
 727     (bfd *, void *, void *);
 728
 729   unsigned int (*_bfd_coff_swap_aouthdr_out)
 730     (bfd *, void *, void *);
 731
 732   unsigned int (*_bfd_coff_swap_scnhdr_out)
 733     (bfd *, void *, void *);
 734
 735   unsigned int _bfd_filhsz;
 736   unsigned int _bfd_aoutsz;
 737   unsigned int _bfd_scnhsz;
 738   unsigned int _bfd_symesz;
 739   unsigned int _bfd_auxesz;
 740   unsigned int _bfd_relsz;
 741   unsigned int _bfd_linesz;
 742   unsigned int _bfd_filnmlen;
 743   bfd_boolean _bfd_coff_long_filenames;
 744
 745   bfd_boolean _bfd_coff_long_section_names;
 746   bfd_boolean (*_bfd_coff_set_long_section_names)
 747     (bfd *, int);
 748
 749   unsigned int _bfd_coff_default_section_alignment_power;
 750   bfd_boolean _bfd_coff_force_symnames_in_strings;
 751   unsigned int _bfd_coff_debug_string_prefix_length;
 752   unsigned int _bfd_coff_max_nscns;
 753
 754   void (*_bfd_coff_swap_filehdr_in)
 755     (bfd *, void *, void *);
 756
 757   void (*_bfd_coff_swap_aouthdr_in)
 758     (bfd *, void *, void *);
 759
 760   void (*_bfd_coff_swap_scnhdr_in)
 761     (bfd *, void *, void *);
 762
 763   void (*_bfd_coff_swap_reloc_in)
 764     (bfd *abfd, void *, void *);
 765
 766   bfd_boolean (*_bfd_coff_bad_format_hook)
 767     (bfd *, void *);
 768
 769   bfd_boolean (*_bfd_coff_set_arch_mach_hook)
 770     (bfd *, void *);
 771
 772   void * (*_bfd_coff_mkobject_hook)
 773     (bfd *, void *, void *);
 774
 775   bfd_boolean (*_bfd_styp_to_sec_flags_hook)
 776     (bfd *, void *, const char *, asection *, flagword *);
 777
 778   void (*_bfd_set_alignment_hook)
 779     (bfd *, asection *, void *);
 780
 781   bfd_boolean (*_bfd_coff_slurp_symbol_table)
 782     (bfd *);
 783
 784   bfd_boolean (*_bfd_coff_symname_in_debug)
 785     (bfd *, struct internal_syment *);
 786
 787   bfd_boolean (*_bfd_coff_pointerize_aux_hook)
 788     (bfd *, combined_entry_type *, combined_entry_type *,
 789             unsigned int, combined_entry_type *);
 790
 791   bfd_boolean (*_bfd_coff_print_aux)
 792     (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 793             combined_entry_type *, unsigned int);
 794
 795   void (*_bfd_coff_reloc16_extra_cases)
 796     (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 797            bfd_byte *, unsigned int *, unsigned int *);
 798
 799   int (*_bfd_coff_reloc16_estimate)
 800     (bfd *, asection *, arelent *, unsigned int,
 801             struct bfd_link_info *);
 802
 803   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 804     (bfd *, struct internal_syment *);
 805
 806   bfd_boolean (*_bfd_coff_compute_section_file_positions)
 807     (bfd *);
 808
 809   bfd_boolean (*_bfd_coff_start_final_link)
 810     (bfd *, struct bfd_link_info *);
 811
 812   bfd_boolean (*_bfd_coff_relocate_section)
 813     (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 814             struct internal_reloc *, struct internal_syment *, asection **);
 815
 816   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 817     (bfd *, asection *, struct internal_reloc *,
 818             struct coff_link_hash_entry *, struct internal_syment *,
 819             bfd_vma *);
 820
 821   bfd_boolean (*_bfd_coff_adjust_symndx)
 822     (bfd *, struct bfd_link_info *, bfd *, asection *,
 823             struct internal_reloc *, bfd_boolean *);
 824
 825   bfd_boolean (*_bfd_coff_link_add_one_symbol)
 826     (struct bfd_link_info *, bfd *, const char *, flagword,
 827             asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
 828             struct bfd_link_hash_entry **);
 829
 830   bfd_boolean (*_bfd_coff_link_output_has_begun)
 831     (bfd *, struct coff_final_link_info *);
 832
 833   bfd_boolean (*_bfd_coff_final_link_postscript)
 834     (bfd *, struct coff_final_link_info *);
 835
 836   bfd_boolean (*_bfd_coff_print_pdata)
 837     (bfd *, void *);
 838
 839 } bfd_coff_backend_data;
 840
 841 #define coff_backend_info(abfd) \
 842   ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 843
 844 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 845   ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 846
 847 #define bfd_coff_swap_sym_in(a,e,i) \
 848   ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 849
 850 #define bfd_coff_swap_lineno_in(a,e,i) \
 851   ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 852
 853 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 854   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 855
 856 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 857   ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 858
 859 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 860   ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 861
 862 #define bfd_coff_swap_sym_out(abfd, i,o) \
 863   ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 864
 865 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 866   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 867
 868 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 869   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 870
 871 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 872   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 873
 874 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 875 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 876 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 877 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 878 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 879 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 880 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 881 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 882 #define bfd_coff_long_filenames(abfd) \
 883   (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 884 #define bfd_coff_long_section_names(abfd) \
 885   (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 886 #define bfd_coff_set_long_section_names(abfd, enable) \
 887   ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
 888 #define bfd_coff_default_section_alignment_power(abfd) \
 889   (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 890 #define bfd_coff_max_nscns(abfd) \
 891   (coff_backend_info (abfd)->_bfd_coff_max_nscns)
 892
 893 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 894   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 895
 896 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 897   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 898
 899 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 900   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 901
 902 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 903   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 904
 905 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 906   ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 907
 908 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 909   ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 910 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 911   ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
 912    (abfd, filehdr, aouthdr))
 913
 914 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
 915   ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 916    (abfd, scnhdr, name, section, flags_ptr))
 917
 918 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 919   ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 920
 921 #define bfd_coff_slurp_symbol_table(abfd)\
 922   ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 923
 924 #define bfd_coff_symname_in_debug(abfd, sym)\
 925   ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 926
 927 #define bfd_coff_force_symnames_in_strings(abfd)\
 928   (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 929
 930 #define bfd_coff_debug_string_prefix_length(abfd)\
 931   (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 932
 933 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 934   ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 935    (abfd, file, base, symbol, aux, indaux))
 936
 937 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
 938                                      reloc, data, src_ptr, dst_ptr)\
 939   ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 940    (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 941
 942 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 943   ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 944    (abfd, section, reloc, shrink, link_info))
 945
 946 #define bfd_coff_classify_symbol(abfd, sym)\
 947   ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 948    (abfd, sym))
 949
 950 #define bfd_coff_compute_section_file_positions(abfd)\
 951   ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 952    (abfd))
 953
 954 #define bfd_coff_start_final_link(obfd, info)\
 955   ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 956    (obfd, info))
 957 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
 958   ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
 959    (obfd, info, ibfd, o, con, rel, isyms, secs))
 960 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
 961   ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
 962    (abfd, sec, rel, h, sym, addendp))
 963 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
 964   ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
 965    (obfd, info, ibfd, sec, rel, adjustedp))
 966 #define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
 967                                      value, string, cp, coll, hashp)\
 968   ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 969    (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 970
 971 #define bfd_coff_link_output_has_begun(a,p) \
 972   ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
 973 #define bfd_coff_final_link_postscript(a,p) \
 974   ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
 975
 976 #define bfd_coff_have_print_pdata(a) \
 977   (coff_backend_info (a)->_bfd_coff_print_pdata)
 978 #define bfd_coff_print_pdata(a,p) \
 979   ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
 980
 981 /* Macro: Returns true if the bfd is a PE executable as opposed to a
 982    PE object file.  */
 983 #define bfd_pei_p(abfd) \
 984   (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))