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) 1990-2023 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 #ifndef _LIBCOFF_H
  27 #define _LIBCOFF_H 1
  28
  29 #include "bfdlink.h"
  30 #include "coff-bfd.h"
  31 #include "hashtab.h"
  32
  33 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 /* Object file tdata; access macros.  */
  38
  39 #define coff_data(bfd)                ((bfd)->tdata.coff_obj_data)
  40 #define obj_pe(bfd)                   (coff_data (bfd)->pe)
  41 #define obj_go32(bfd)                 (coff_data (bfd)->go32)
  42 #define obj_symbols(bfd)              (coff_data (bfd)->symbols)
  43 #define obj_sym_filepos(bfd)          (coff_data (bfd)->sym_filepos)
  44 #define obj_relocbase(bfd)            (coff_data (bfd)->relocbase)
  45 #define obj_raw_syments(bfd)          (coff_data (bfd)->raw_syments)
  46 #define obj_raw_syment_count(bfd)     (coff_data (bfd)->raw_syment_count)
  47 #define obj_convert(bfd)              (coff_data (bfd)->conversion_table)
  48 #define obj_conv_table_size(bfd)      (coff_data (bfd)->conv_table_size)
  49 #define obj_coff_external_syms(bfd)   (coff_data (bfd)->external_syms)
  50 #define obj_coff_keep_syms(bfd)       (coff_data (bfd)->keep_syms)
  51 #define obj_coff_strings(bfd)         (coff_data (bfd)->strings)
  52 #define obj_coff_strings_len(bfd)     (coff_data (bfd)->strings_len)
  53 #define obj_coff_keep_strings(bfd)    (coff_data (bfd)->keep_strings)
  54 #define obj_coff_sym_hashes(bfd)      (coff_data (bfd)->sym_hashes)
  55 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  56 #define obj_coff_local_toc_table(bfd) (coff_data (bfd)->local_toc_sym_map)
  57
  58 /* `Tdata' information kept for COFF files.  */
  59
  60 typedef struct coff_tdata
  61 {
  62   struct coff_symbol_struct *symbols;   /* Symtab for input bfd.  */
  63   unsigned int *conversion_table;
  64   int conv_table_size;
  65   file_ptr sym_filepos;
  66
  67   struct coff_ptr_struct *raw_syments;
  68   unsigned long raw_syment_count;
  69
  70   /* These are only valid once writing has begun.  */
  71   unsigned long int relocbase;
  72
  73   /* These members communicate important constants about the symbol table
  74      to GDB's symbol-reading code.  These `constants' unfortunately vary
  75      from coff implementation to implementation...  */
  76   unsigned local_n_btmask;
  77   unsigned local_n_btshft;
  78   unsigned local_n_tmask;
  79   unsigned local_n_tshift;
  80   unsigned local_symesz;
  81   unsigned local_auxesz;
  82   unsigned local_linesz;
  83
  84   /* The unswapped external symbols.  May be NULL.  Read by
  85      _bfd_coff_get_external_symbols.  */
  86   void * external_syms;
  87
  88   /* The string table.  May be NULL.  Read by
  89      _bfd_coff_read_string_table.  */
  90   char *strings;
  91   /* The length of the strings table.  For error checking.  */
  92   bfd_size_type strings_len;
  93
  94   /* Set if long section names are supported.  A writable copy of the COFF
  95      backend flag _bfd_coff_long_section_names.  */
  96   bool long_section_names;
  97
  98   /* If this is TRUE, the external_syms may not be freed.  */
  99   bool keep_syms;
 100   /* If this is TRUE, the strings may not be freed.  */
 101   bool keep_strings;
 102   /* If this is TRUE, the strings have been written out already.  */
 103   bool strings_written;
 104
 105   /* Is this a GO32 coff file?  */
 106   bool go32;
 107
 108   /* Is this a PE format coff file?  */
 109   bool pe;
 110
 111   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 112      used by ARM code.  */
 113   flagword flags;
 114
 115   /* Used by the COFF backend linker.  */
 116   struct coff_link_hash_entry **sym_hashes;
 117
 118   /* Used by the pe linker for PowerPC.  */
 119   int *local_toc_sym_map;
 120
 121   struct bfd_link_info *link_info;
 122
 123   /* Used by coff_find_nearest_line.  */
 124   void * line_info;
 125
 126   /* A place to stash dwarf2 info for this bfd.  */
 127   void * dwarf2_find_line_info;
 128
 129   /* The timestamp from the COFF file header.  */
 130   long timestamp;
 131
 132   /* A stub (extra data prepended before the COFF image) and its size.
 133      Used by coff-go32-exe, it contains executable data that loads the
 134      COFF object into memory.  */
 135   char * stub;
 136   bfd_size_type stub_size;
 137
 138   /* Hash table containing sections by target index.  */
 139   htab_t section_by_target_index;
 140
 141   /* Hash table containing sections by index.  */
 142   htab_t section_by_index;
 143
 144 } coff_data_type;
 145
 146 /* Tdata for pe image files.  */
 147 typedef struct pe_tdata
 148 {
 149   coff_data_type coff;
 150   struct internal_extra_pe_aouthdr pe_opthdr;
 151   int dll;
 152   int has_reloc_section;
 153   int dont_strip_reloc;
 154   char dos_message[64];
 155   /* The timestamp to insert into the output file.
 156      If the timestamp is -1 then the current time is used.  */
 157   int timestamp;
 158   bool (*in_reloc_p) (bfd *, reloc_howto_type *);
 159   flagword real_flags;
 160
 161   /* Build-id info.  */
 162   struct
 163   {
 164     bool (*after_write_object_contents) (bfd *);
 165     const char *style;
 166     asection *sec;
 167   } build_id;
 168
 169   htab_t comdat_hash;
 170 } pe_data_type;
 171
 172 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 173
 174 struct comdat_hash_entry
 175 {
 176   int target_index;
 177   struct internal_syment isym;
 178   char *symname;
 179   flagword sec_flags;
 180   char *comdat_name;
 181   long comdat_symbol;
 182 };
 183
 184 /* Tdata for XCOFF files.  */
 185
 186 struct xcoff_tdata
 187 {
 188   /* Basic COFF information.  */
 189   coff_data_type coff;
 190
 191   /* TRUE if this is an XCOFF64 file. */
 192   bool xcoff64;
 193
 194   /* TRUE if a large a.out header should be generated.  */
 195   bool full_aouthdr;
 196
 197   /* TOC value.  */
 198   bfd_vma toc;
 199
 200   /* Index of section holding TOC.  */
 201   int sntoc;
 202
 203   /* Index of section holding entry point.  */
 204   int snentry;
 205
 206   /* .text alignment from optional header.  */
 207   int text_align_power;
 208
 209   /* .data alignment from optional header.  */
 210   int data_align_power;
 211
 212   /* modtype from optional header.  */
 213   short modtype;
 214
 215   /* cputype from optional header.  */
 216   short cputype;
 217
 218   /* maxdata from optional header.  */
 219   bfd_vma maxdata;
 220
 221   /* maxstack from optional header.  */
 222   bfd_vma maxstack;
 223
 224   /* Used by the XCOFF backend linker.  */
 225   asection **csects;
 226   long *debug_indices;
 227   unsigned int *lineno_counts;
 228   unsigned int import_file_id;
 229 };
 230
 231 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 232
 233 /* We take the address of the first element of an asymbol to ensure that the
 234    macro is only ever applied to an asymbol.  */
 235 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 236
 237 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 238
 239 struct xcoff_section_tdata
 240 {
 241   /* Used for XCOFF csects created by the linker; points to the real
 242      XCOFF section which contains this csect.  */
 243   asection *enclosing;
 244   /* The lineno_count field for the enclosing section, because we are
 245      going to clobber it there.  */
 246   unsigned int lineno_count;
 247   /* The first and last symbol indices for symbols used by this csect.  */
 248   unsigned long first_symndx;
 249   unsigned long last_symndx;
 250 };
 251
 252 /* An accessor macro the xcoff_section_tdata structure.  */
 253 #define xcoff_section_data(abfd, sec) \
 254   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 255
 256 /* Tdata for sections in PE files.  */
 257
 258 struct pei_section_tdata
 259 {
 260   /* The virtual size of the section.  */
 261   bfd_size_type virt_size;
 262   /* The PE section flags.  */
 263   long pe_flags;
 264 };
 265
 266 /* An accessor macro for the pei_section_tdata structure.  */
 267 #define pei_section_data(abfd, sec) \
 268   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 269
 270 /* COFF linker hash table entries.  */
 271
 272 struct coff_link_hash_entry
 273 {
 274   struct bfd_link_hash_entry root;
 275
 276   /* Symbol index in output file.  This is initialized to -1.  It is
 277      set to -2 if the symbol is used by a reloc.  It is set to -3 if
 278      this symbol is defined in a discarded section.  */
 279   long indx;
 280
 281   /* Symbol type.  */
 282   unsigned short type;
 283
 284   /* Symbol class.  */
 285   unsigned char symbol_class;
 286
 287   /* Number of auxiliary entries.  */
 288   char numaux;
 289
 290   /* BFD to take auxiliary entries from.  */
 291   bfd *auxbfd;
 292
 293   /* Pointer to array of auxiliary entries, if any.  */
 294   union internal_auxent *aux;
 295
 296   /* Flag word; legal values follow.  */
 297   unsigned short coff_link_hash_flags;
 298   /* Symbol is a PE section symbol.  */
 299 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 300 };
 301
 302 /* COFF linker hash table.  */
 303
 304 struct coff_link_hash_table
 305 {
 306   struct bfd_link_hash_table root;
 307   /* A pointer to information used to link stabs in sections.  */
 308   struct stab_info stab_info;
 309   /* Hash table that maps undecorated names to their respective
 310    * decorated coff_link_hash_entry as found in fixup_stdcalls  */
 311   struct bfd_hash_table decoration_hash;
 312 };
 313
 314 struct coff_reloc_cookie
 315 {
 316   struct internal_reloc *         rels;
 317   struct internal_reloc *         rel;
 318   struct internal_reloc *         relend;
 319   struct coff_symbol_struct *     symbols;      /* Symtab for input bfd.  */
 320   bfd *                           abfd;
 321   struct coff_link_hash_entry **  sym_hashes;
 322 };
 323
 324 /* Look up an entry in a COFF linker hash table.  */
 325
 326 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 327   ((struct coff_link_hash_entry *)                                      \
 328    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 329                          (copy), (follow)))
 330
 331 /* Traverse a COFF linker hash table.  */
 332
 333 #define coff_link_hash_traverse(table, func, info)                      \
 334   (bfd_link_hash_traverse                                               \
 335    (&(table)->root,                                                     \
 336     (bool (*) (struct bfd_link_hash_entry *, void *)) (func),           \
 337     (info)))
 338
 339 /* Get the COFF linker hash table from a link_info structure.  */
 340
 341 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 342
 343 struct decoration_hash_entry
 344 {
 345   struct bfd_hash_entry root;
 346   struct bfd_link_hash_entry *decorated_link;
 347 };
 348
 349 /* Functions in coffgen.c.  */
 350 extern void coff_object_cleanup
 351   (bfd *);
 352 extern bfd_cleanup coff_real_object_p
 353   (bfd *, unsigned, struct internal_filehdr *, struct internal_aouthdr *);
 354 extern bfd_cleanup coff_object_p
 355   (bfd *);
 356 extern struct bfd_section *coff_section_from_bfd_index
 357   (bfd *, int);
 358 extern long coff_get_symtab_upper_bound
 359   (bfd *);
 360 extern long coff_canonicalize_symtab
 361   (bfd *, asymbol **);
 362 extern int coff_count_linenumbers
 363   (bfd *);
 364 extern bool coff_renumber_symbols
 365   (bfd *, int *);
 366 extern void coff_mangle_symbols
 367   (bfd *);
 368 extern bool coff_write_symbols
 369   (bfd *);
 370 extern bool coff_write_alien_symbol
 371   (bfd *, asymbol *, struct internal_syment *, bfd_vma *,
 372    struct bfd_strtab_hash *, bool, asection **, bfd_size_type *);
 373 extern bool coff_write_linenumbers
 374   (bfd *);
 375 extern alent *coff_get_lineno
 376   (bfd *, asymbol *);
 377 extern asymbol *coff_section_symbol
 378   (bfd *, char *);
 379 extern bool _bfd_coff_get_external_symbols
 380   (bfd *);
 381 extern const char *_bfd_coff_read_string_table
 382   (bfd *);
 383 extern bool _bfd_coff_free_symbols
 384   (bfd *);
 385 extern struct coff_ptr_struct *coff_get_normalized_symtab
 386   (bfd *);
 387 extern long coff_get_reloc_upper_bound
 388   (bfd *, sec_ptr);
 389 extern asymbol *coff_make_empty_symbol
 390   (bfd *);
 391 extern void coff_print_symbol
 392   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 393 extern void coff_get_symbol_info
 394   (bfd *, asymbol *, symbol_info *ret);
 395 #define coff_get_symbol_version_string \
 396   _bfd_nosymbols_get_symbol_version_string
 397 extern bool _bfd_coff_is_local_label_name
 398   (bfd *, const char *);
 399 extern asymbol *coff_bfd_make_debug_symbol
 400   (bfd *);
 401 extern bool coff_find_nearest_line
 402   (bfd *, asymbol **, asection *, bfd_vma,
 403    const char **, const char **, unsigned int *, unsigned int *);
 404 #define coff_find_nearest_line_with_alt \
 405   _bfd_nosymbols_find_nearest_line_with_alt
 406 #define coff_find_line _bfd_nosymbols_find_line
 407 struct dwarf_debug_section;
 408 extern bool coff_find_nearest_line_with_names
 409   (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **,
 410    unsigned int *, const struct dwarf_debug_section *);
 411 extern bool coff_find_inliner_info
 412   (bfd *, const char **, const char **, unsigned int *);
 413 extern int coff_sizeof_headers
 414   (bfd *, struct bfd_link_info *);
 415 extern bool bfd_coff_reloc16_relax_section
 416   (bfd *, asection *, struct bfd_link_info *, bool *);
 417 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 418   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 419    bfd_byte *, bool, asymbol **);
 420 extern bfd_vma bfd_coff_reloc16_get_value
 421   (arelent *, struct bfd_link_info *, asection *);
 422 extern void bfd_perform_slip
 423   (bfd *, unsigned int, asection *, bfd_vma);
 424 extern bool _bfd_coff_free_cached_info
 425   (bfd *);
 426
 427 /* Functions and types in cofflink.c.  */
 428
 429 #define STRING_SIZE_SIZE 4
 430
 431 /* We use a hash table to merge identical enum, struct, and union
 432    definitions in the linker.  */
 433
 434 /* Information we keep for a single element (an enum value, a
 435    structure or union field) in the debug merge hash table.  */
 436
 437 struct coff_debug_merge_element
 438 {
 439   /* Next element.  */
 440   struct coff_debug_merge_element *next;
 441
 442   /* Name.  */
 443   const char *name;
 444
 445   /* Type.  */
 446   unsigned int type;
 447
 448   /* Symbol index for complex type.  */
 449   long tagndx;
 450 };
 451
 452 /* A linked list of debug merge entries for a given name.  */
 453
 454 struct coff_debug_merge_type
 455 {
 456   /* Next type with the same name.  */
 457   struct coff_debug_merge_type *next;
 458
 459   /* Class of type.  */
 460   int type_class;
 461
 462   /* Symbol index where this type is defined.  */
 463   long indx;
 464
 465   /* List of elements.  */
 466   struct coff_debug_merge_element *elements;
 467 };
 468
 469 /* Information we store in the debug merge hash table.  */
 470
 471 struct coff_debug_merge_hash_entry
 472 {
 473   struct bfd_hash_entry root;
 474
 475   /* A list of types with this name.  */
 476   struct coff_debug_merge_type *types;
 477 };
 478
 479 /* The debug merge hash table.  */
 480
 481 struct coff_debug_merge_hash_table
 482 {
 483   struct bfd_hash_table root;
 484 };
 485
 486 /* Initialize a COFF debug merge hash table.  */
 487
 488 #define coff_debug_merge_hash_table_init(table) \
 489   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc, \
 490                         sizeof (struct coff_debug_merge_hash_entry)))
 491
 492 /* Free a COFF debug merge hash table.  */
 493
 494 #define coff_debug_merge_hash_table_free(table) \
 495   (bfd_hash_table_free (&(table)->root))
 496
 497 /* Look up an entry in a COFF debug merge hash table.  */
 498
 499 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 500   ((struct coff_debug_merge_hash_entry *) \
 501    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 502
 503 /* Information we keep for each section in the output file when doing
 504    a relocatable link.  */
 505
 506 struct coff_link_section_info
 507 {
 508   /* The relocs to be output.  */
 509   struct internal_reloc *relocs;
 510   /* For each reloc against a global symbol whose index was not known
 511      when the reloc was handled, the global hash table entry.  */
 512   struct coff_link_hash_entry **rel_hashes;
 513 };
 514
 515 /* Information that we pass around while doing the final link step.  */
 516
 517 struct coff_final_link_info
 518 {
 519   /* General link information.  */
 520   struct bfd_link_info *info;
 521   /* Output BFD.  */
 522   bfd *output_bfd;
 523   /* Used to indicate failure in traversal routine.  */
 524   bool failed;
 525   /* If doing "task linking" set only during the time when we want the
 526      global symbol writer to convert the storage class of defined global
 527      symbols from global to static. */
 528   bool global_to_static;
 529   /* Hash table for long symbol names.  */
 530   struct bfd_strtab_hash *strtab;
 531   /* When doing a relocatable link, an array of information kept for
 532      each output section, indexed by the target_index field.  */
 533   struct coff_link_section_info *section_info;
 534   /* Symbol index of last C_FILE symbol (-1 if none).  */
 535   long last_file_index;
 536   /* Contents of last C_FILE symbol.  */
 537   struct internal_syment last_file;
 538   /* Symbol index of first aux entry of last .bf symbol with an empty
 539      endndx field (-1 if none).  */
 540   long last_bf_index;
 541   /* Contents of last_bf_index aux entry.  */
 542   union internal_auxent last_bf;
 543   /* Hash table used to merge debug information.  */
 544   struct coff_debug_merge_hash_table debug_merge;
 545   /* Buffer large enough to hold swapped symbols of any input file.  */
 546   struct internal_syment *internal_syms;
 547   /* Buffer large enough to hold sections of symbols of any input file.  */
 548   asection **sec_ptrs;
 549   /* Buffer large enough to hold output indices of symbols of any
 550      input file.  */
 551   long *sym_indices;
 552   /* Buffer large enough to hold output symbols for any input file.  */
 553   bfd_byte *outsyms;
 554   /* Buffer large enough to hold external line numbers for any input
 555      section.  */
 556   bfd_byte *linenos;
 557   /* Buffer large enough to hold any input section.  */
 558   bfd_byte *contents;
 559   /* Buffer large enough to hold external relocs of any input section.  */
 560   bfd_byte *external_relocs;
 561   /* Buffer large enough to hold swapped relocs of any input section.  */
 562   struct internal_reloc *internal_relocs;
 563 };
 564
 565 /* Most COFF variants have no way to record the alignment of a
 566    section.  This struct is used to set a specific alignment based on
 567    the name of the section.  */
 568
 569 struct coff_section_alignment_entry
 570 {
 571   /* The section name.  */
 572   const char *name;
 573
 574   /* This is either (unsigned int) -1, indicating that the section
 575      name must match exactly, or it is the number of letters which
 576      must match at the start of the name.  */
 577   unsigned int comparison_length;
 578
 579   /* These macros may be used to fill in the first two fields in a
 580      structure initialization.  */
 581 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 582 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 583
 584   /* Only use this entry if the default section alignment for this
 585      target is at least that much (as a power of two).  If this field
 586      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 587   unsigned int default_alignment_min;
 588
 589   /* Only use this entry if the default section alignment for this
 590      target is no greater than this (as a power of two).  If this
 591      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 592   unsigned int default_alignment_max;
 593
 594 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 595
 596   /* The desired alignment for this section (as a power of two).  */
 597   unsigned int alignment_power;
 598 };
 599
 600 extern struct bfd_hash_entry *_decoration_hash_newfunc
 601   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 602 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 603   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 604 extern bool _bfd_coff_link_hash_table_init
 605   (struct coff_link_hash_table *, bfd *,
 606    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 607                                struct bfd_hash_table *,
 608                                const char *),
 609    unsigned int);
 610 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 611   (bfd *);
 612 extern const char *_bfd_coff_internal_syment_name
 613   (bfd *, const struct internal_syment *, char *);
 614 extern bool _bfd_coff_section_already_linked
 615   (bfd *, asection *, struct bfd_link_info *);
 616 extern bool _bfd_coff_link_add_symbols
 617   (bfd *, struct bfd_link_info *);
 618 extern bool _bfd_coff_final_link
 619   (bfd *, struct bfd_link_info *);
 620 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 621   (bfd *, asection *, bool, bfd_byte *, bool,
 622    struct internal_reloc *);
 623 extern bool _bfd_coff_generic_relocate_section
 624   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 625    struct internal_reloc *, struct internal_syment *, asection **);
 626 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 627   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 628 extern bool _bfd_coff_write_global_sym
 629   (struct bfd_hash_entry *, void *);
 630 extern bool _bfd_coff_write_task_globals
 631   (struct coff_link_hash_entry *, void *);
 632 extern bool _bfd_coff_link_input_bfd
 633   (struct coff_final_link_info *, bfd *);
 634 extern bool _bfd_coff_reloc_link_order
 635   (bfd *, struct coff_final_link_info *, asection *,
 636    struct bfd_link_order *);
 637 extern bool bfd_coff_gc_sections
 638   (bfd *, struct bfd_link_info *);
 639 extern const char *bfd_coff_group_name
 640   (bfd *, const asection *);
 641
 642 #define coff_get_section_contents_in_window \
 643   _bfd_generic_get_section_contents_in_window
 644
 645 /* Functions in xcofflink.c.  */
 646
 647 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 648   (bfd *);
 649 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 650   (bfd *, asymbol **);
 651 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 652   (bfd *);
 653 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 654   (bfd *, arelent **, asymbol **);
 655 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 656   (bfd *);
 657 extern bool _bfd_xcoff_bfd_link_add_symbols
 658   (bfd *, struct bfd_link_info *);
 659 extern bool _bfd_xcoff_bfd_final_link
 660   (bfd *, struct bfd_link_info *);
 661 extern bool _bfd_xcoff_define_common_symbol
 662   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 663 extern bool _bfd_ppc_xcoff_relocate_section
 664   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 665    struct internal_reloc *, struct internal_syment *, asection **);
 666 /* Extracted from coffcode.h.  */
 667 typedef struct coff_ptr_struct
 668 {
 669   /* Remembers the offset from the first symbol in the file for
 670      this symbol.  Generated by coff_renumber_symbols.  */
 671   unsigned int offset;
 672
 673   /* Selects between the elements of the union below.  */
 674   unsigned int is_sym : 1;
 675
 676   /* Selects between the elements of the x_sym.x_tagndx union.  If set,
 677      p is valid and the field will be renumbered.  */
 678   unsigned int fix_tag : 1;
 679
 680   /* Selects between the elements of the x_sym.x_fcnary.x_fcn.x_endndx
 681      union.  If set, p is valid and the field will be renumbered.  */
 682   unsigned int fix_end : 1;
 683
 684   /* Selects between the elements of the x_csect.x_scnlen union.  If set,
 685      p is valid and the field will be renumbered.  */
 686   unsigned int fix_scnlen : 1;
 687
 688   /* If set, u.syment.n_value contains a pointer to a symbol.  The final
 689      value will be the offset field.  Used for XCOFF C_BSTAT symbols.  */
 690   unsigned int fix_value : 1;
 691
 692   /* If set, u.syment.n_value is an index into the line number entries.
 693      Used for XCOFF C_BINCL/C_EINCL symbols.  */
 694   unsigned int fix_line : 1;
 695
 696   /* The container for the symbol structure as read and translated
 697      from the file.  */
 698   union
 699   {
 700     union internal_auxent auxent;
 701     struct internal_syment syment;
 702   } u;
 703
 704  /* An extra pointer which can used by format based on COFF (like XCOFF)
 705     to provide extra information to their backend.  */
 706  void *extrap;
 707 } combined_entry_type;
 708
 709 /* Each canonical asymbol really looks like this: */
 710
 711 typedef struct coff_symbol_struct
 712 {
 713   /* The actual symbol which the rest of BFD works with */
 714   asymbol symbol;
 715
 716   /* A pointer to the hidden information for this symbol */
 717   combined_entry_type *native;
 718
 719   /* A pointer to the linenumber information for this symbol */
 720   struct lineno_cache_entry *lineno;
 721
 722   /* Have the line numbers been relocated yet ? */
 723   bool done_lineno;
 724 } coff_symbol_type;
 725
 726 /* COFF symbol classifications.  */
 727
 728 enum coff_symbol_classification
 729 {
 730   /* Global symbol.  */
 731   COFF_SYMBOL_GLOBAL,
 732   /* Common symbol.  */
 733   COFF_SYMBOL_COMMON,
 734   /* Undefined symbol.  */
 735   COFF_SYMBOL_UNDEFINED,
 736   /* Local symbol.  */
 737   COFF_SYMBOL_LOCAL,
 738   /* PE section symbol.  */
 739   COFF_SYMBOL_PE_SECTION
 740 };
 741
 742 typedef asection * (*coff_gc_mark_hook_fn)
 743   (asection *, struct bfd_link_info *, struct internal_reloc *,
 744    struct coff_link_hash_entry *, struct internal_syment *);
 745
 746 typedef struct
 747 {
 748   void (*_bfd_coff_swap_aux_in)
 749     (bfd *, void *, int, int, int, int, void *);
 750
 751   void (*_bfd_coff_swap_sym_in)
 752     (bfd *, void *, void *);
 753
 754   void (*_bfd_coff_swap_lineno_in)
 755     (bfd *, void *, void *);
 756
 757   unsigned int (*_bfd_coff_swap_aux_out)
 758     (bfd *, void *, int, int, int, int, void *);
 759
 760   unsigned int (*_bfd_coff_swap_sym_out)
 761     (bfd *, void *, void *);
 762
 763   unsigned int (*_bfd_coff_swap_lineno_out)
 764     (bfd *, void *, void *);
 765
 766   unsigned int (*_bfd_coff_swap_reloc_out)
 767     (bfd *, void *, void *);
 768
 769   unsigned int (*_bfd_coff_swap_filehdr_out)
 770     (bfd *, void *, void *);
 771
 772   unsigned int (*_bfd_coff_swap_aouthdr_out)
 773     (bfd *, void *, void *);
 774
 775   unsigned int (*_bfd_coff_swap_scnhdr_out)
 776     (bfd *, void *, void *);
 777
 778   unsigned int _bfd_filhsz;
 779   unsigned int _bfd_aoutsz;
 780   unsigned int _bfd_scnhsz;
 781   unsigned int _bfd_symesz;
 782   unsigned int _bfd_auxesz;
 783   unsigned int _bfd_relsz;
 784   unsigned int _bfd_linesz;
 785   unsigned int _bfd_filnmlen;
 786   bool _bfd_coff_long_filenames;
 787
 788   bool _bfd_coff_long_section_names;
 789   bool (*_bfd_coff_set_long_section_names)
 790     (bfd *, int);
 791
 792   unsigned int _bfd_coff_default_section_alignment_power;
 793   bool _bfd_coff_force_symnames_in_strings;
 794   unsigned int _bfd_coff_debug_string_prefix_length;
 795   unsigned int _bfd_coff_max_nscns;
 796
 797   void (*_bfd_coff_swap_filehdr_in)
 798     (bfd *, void *, void *);
 799
 800   void (*_bfd_coff_swap_aouthdr_in)
 801     (bfd *, void *, void *);
 802
 803   void (*_bfd_coff_swap_scnhdr_in)
 804     (bfd *, void *, void *);
 805
 806   void (*_bfd_coff_swap_reloc_in)
 807     (bfd *abfd, void *, void *);
 808
 809   bool (*_bfd_coff_bad_format_hook)
 810     (bfd *, void *);
 811
 812   bool (*_bfd_coff_set_arch_mach_hook)
 813     (bfd *, void *);
 814
 815   void * (*_bfd_coff_mkobject_hook)
 816     (bfd *, void *, void *);
 817
 818   bool (*_bfd_styp_to_sec_flags_hook)
 819     (bfd *, void *, const char *, asection *, flagword *);
 820
 821   void (*_bfd_set_alignment_hook)
 822     (bfd *, asection *, void *);
 823
 824   bool (*_bfd_coff_slurp_symbol_table)
 825     (bfd *);
 826
 827   bool (*_bfd_coff_symname_in_debug)
 828     (bfd *, struct internal_syment *);
 829
 830   bool (*_bfd_coff_pointerize_aux_hook)
 831     (bfd *, combined_entry_type *, combined_entry_type *,
 832      unsigned int, combined_entry_type *);
 833
 834   bool (*_bfd_coff_print_aux)
 835     (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 836      combined_entry_type *, unsigned int);
 837
 838   bool (*_bfd_coff_reloc16_extra_cases)
 839     (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 840      bfd_byte *, size_t *, size_t *);
 841
 842   int (*_bfd_coff_reloc16_estimate)
 843     (bfd *, asection *, arelent *, unsigned int,
 844      struct bfd_link_info *);
 845
 846   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 847     (bfd *, struct internal_syment *);
 848
 849   bool (*_bfd_coff_compute_section_file_positions)
 850     (bfd *);
 851
 852   bool (*_bfd_coff_start_final_link)
 853     (bfd *, struct bfd_link_info *);
 854
 855   bool (*_bfd_coff_relocate_section)
 856     (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 857      struct internal_reloc *, struct internal_syment *, asection **);
 858
 859   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 860     (bfd *, asection *, struct internal_reloc *,
 861      struct coff_link_hash_entry *, struct internal_syment *, bfd_vma *);
 862
 863   bool (*_bfd_coff_adjust_symndx)
 864     (bfd *, struct bfd_link_info *, bfd *, asection *,
 865      struct internal_reloc *, bool *);
 866
 867   bool (*_bfd_coff_link_add_one_symbol)
 868     (struct bfd_link_info *, bfd *, const char *, flagword,
 869      asection *, bfd_vma, const char *, bool, bool,
 870      struct bfd_link_hash_entry **);
 871
 872   bool (*_bfd_coff_link_output_has_begun)
 873     (bfd *, struct coff_final_link_info *);
 874
 875   bool (*_bfd_coff_final_link_postscript)
 876     (bfd *, struct coff_final_link_info *);
 877
 878   bool (*_bfd_coff_print_pdata)
 879     (bfd *, void *);
 880
 881 } bfd_coff_backend_data;
 882
 883 #define coff_backend_info(abfd) \
 884   ((const bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 885
 886 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 887   ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 888
 889 #define bfd_coff_swap_sym_in(a,e,i) \
 890   ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 891
 892 #define bfd_coff_swap_lineno_in(a,e,i) \
 893   ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 894
 895 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 896   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 897
 898 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 899   ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 900
 901 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 902   ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 903
 904 #define bfd_coff_swap_sym_out(abfd, i,o) \
 905   ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 906
 907 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 908   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 909
 910 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 911   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 912
 913 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 914   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 915
 916 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 917 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 918 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 919 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 920 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 921 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 922 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 923 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 924 #define bfd_coff_long_filenames(abfd) \
 925   (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 926 #define bfd_coff_long_section_names(abfd) \
 927   (coff_data (abfd)->long_section_names)
 928 #define bfd_coff_set_long_section_names(abfd, enable) \
 929   ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
 930 #define bfd_coff_default_section_alignment_power(abfd) \
 931   (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 932 #define bfd_coff_max_nscns(abfd) \
 933   (coff_backend_info (abfd)->_bfd_coff_max_nscns)
 934
 935 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 936   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 937
 938 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 939   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 940
 941 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 942   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 943
 944 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 945   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 946
 947 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 948   ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 949
 950 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 951   ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 952 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 953   ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
 954    (abfd, filehdr, aouthdr))
 955
 956 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
 957   ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 958    (abfd, scnhdr, name, section, flags_ptr))
 959
 960 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 961   ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 962
 963 #define bfd_coff_slurp_symbol_table(abfd)\
 964   ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 965
 966 #define bfd_coff_symname_in_debug(abfd, sym)\
 967   ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 968
 969 #define bfd_coff_force_symnames_in_strings(abfd)\
 970   (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 971
 972 #define bfd_coff_debug_string_prefix_length(abfd)\
 973   (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 974
 975 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 976   ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 977    (abfd, file, base, symbol, aux, indaux))
 978
 979 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
 980                                      reloc, data, src_ptr, dst_ptr)\
 981   ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 982    (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 983
 984 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 985   ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 986    (abfd, section, reloc, shrink, link_info))
 987
 988 #define bfd_coff_classify_symbol(abfd, sym)\
 989   ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 990    (abfd, sym))
 991
 992 #define bfd_coff_compute_section_file_positions(abfd)\
 993   ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 994    (abfd))
 995
 996 #define bfd_coff_start_final_link(obfd, info)\
 997   ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 998    (obfd, info))
 999 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1000   ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1001    (obfd, info, ibfd, o, con, rel, isyms, secs))
1002 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1003   ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1004    (abfd, sec, rel, h, sym, addendp))
1005 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1006   ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1007    (obfd, info, ibfd, sec, rel, adjustedp))
1008 #define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
1009                                      value, string, cp, coll, hashp)\
1010   ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1011    (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1012
1013 #define bfd_coff_link_output_has_begun(a,p) \
1014   ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
1015 #define bfd_coff_final_link_postscript(a,p) \
1016   ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
1017
1018 #define bfd_coff_have_print_pdata(a) \
1019   (coff_backend_info (a)->_bfd_coff_print_pdata)
1020 #define bfd_coff_print_pdata(a,p) \
1021   ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
1022
1023 /* Macro: Returns true if the bfd is a PE executable as opposed to a
1024    PE object file.  */
1025 #define bfd_pei_p(abfd) \
1026   (startswith ((abfd)->xvec->name, "pei-"))
1027 #ifdef __cplusplus
1028 }
1029 #endif
1030 #endif