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