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) 1990-2020 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
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /* Object file tdata; access macros.  */
  37
  38 #define coff_data(bfd)                ((bfd)->tdata.coff_obj_data)
  39 #define obj_pe(bfd)                   (coff_data (bfd)->pe)
  40 #define obj_go32(bfd)                 (coff_data (bfd)->go32)
  41 #define obj_symbols(bfd)              (coff_data (bfd)->symbols)
  42 #define obj_sym_filepos(bfd)          (coff_data (bfd)->sym_filepos)
  43 #define obj_relocbase(bfd)            (coff_data (bfd)->relocbase)
  44 #define obj_raw_syments(bfd)          (coff_data (bfd)->raw_syments)
  45 #define obj_raw_syment_count(bfd)     (coff_data (bfd)->raw_syment_count)
  46 #define obj_convert(bfd)              (coff_data (bfd)->conversion_table)
  47 #define obj_conv_table_size(bfd)      (coff_data (bfd)->conv_table_size)
  48 #define obj_coff_external_syms(bfd)   (coff_data (bfd)->external_syms)
  49 #define obj_coff_keep_syms(bfd)       (coff_data (bfd)->keep_syms)
  50 #define obj_coff_strings(bfd)         (coff_data (bfd)->strings)
  51 #define obj_coff_strings_len(bfd)     (coff_data (bfd)->strings_len)
  52 #define obj_coff_keep_strings(bfd)    (coff_data (bfd)->keep_strings)
  53 #define obj_coff_sym_hashes(bfd)      (coff_data (bfd)->sym_hashes)
  54 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  55 #define obj_coff_local_toc_table(bfd) (coff_data (bfd)->local_toc_sym_map)
  56
  57 /* `Tdata' information kept for COFF files.  */
  58
  59 typedef struct coff_tdata
  60 {
  61   struct coff_symbol_struct *symbols;   /* Symtab for input bfd.  */
  62   unsigned int *conversion_table;
  63   int conv_table_size;
  64   file_ptr sym_filepos;
  65
  66   struct coff_ptr_struct *raw_syments;
  67   unsigned long raw_syment_count;
  68
  69   /* These are only valid once writing has begun.  */
  70   unsigned long int relocbase;
  71
  72   /* These members communicate important constants about the symbol table
  73      to GDB's symbol-reading code.  These `constants' unfortunately vary
  74      from coff implementation to implementation...  */
  75   unsigned local_n_btmask;
  76   unsigned local_n_btshft;
  77   unsigned local_n_tmask;
  78   unsigned local_n_tshift;
  79   unsigned local_symesz;
  80   unsigned local_auxesz;
  81   unsigned local_linesz;
  82
  83   /* The unswapped external symbols.  May be NULL.  Read by
  84      _bfd_coff_get_external_symbols.  */
  85   void * external_syms;
  86   /* If this is TRUE, the external_syms may not be freed.  */
  87   bfd_boolean keep_syms;
  88
  89   /* The string table.  May be NULL.  Read by
  90      _bfd_coff_read_string_table.  */
  91   char *strings;
  92   /* The length of the strings table.  For error checking.  */
  93   bfd_size_type strings_len;
  94   /* If this is TRUE, the strings may not be freed.  */
  95   bfd_boolean keep_strings;
  96   /* If this is TRUE, the strings have been written out already.  */
  97   bfd_boolean strings_written;
  98
  99   /* Is this a PE format coff file?  */
 100   int pe;
 101   /* Used by the COFF backend linker.  */
 102   struct coff_link_hash_entry **sym_hashes;
 103
 104   /* Used by the pe linker for PowerPC.  */
 105   int *local_toc_sym_map;
 106
 107   struct bfd_link_info *link_info;
 108
 109   /* Used by coff_find_nearest_line.  */
 110   void * line_info;
 111
 112   /* A place to stash dwarf2 info for this bfd.  */
 113   void * dwarf2_find_line_info;
 114
 115   /* The timestamp from the COFF file header.  */
 116   long timestamp;
 117
 118   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 119      used by ARM code.  */
 120   flagword flags;
 121
 122   /* Is this a GO32 coff file?  */
 123   bfd_boolean go32;
 124
 125   /* A stub (extra data prepended before the COFF image) and its size.
 126      Used by coff-go32-exe, it contains executable data that loads the
 127      COFF object into memory.  */
 128   char * stub;
 129   bfd_size_type stub_size;
 130 } coff_data_type;
 131
 132 /* Tdata for pe image files.  */
 133 typedef struct pe_tdata
 134 {
 135   coff_data_type coff;
 136   struct internal_extra_pe_aouthdr pe_opthdr;
 137   int dll;
 138   int has_reloc_section;
 139   int dont_strip_reloc;
 140   int dos_message[16];
 141   /* The timestamp to insert into the output file.
 142      If the timestamp is -1 then the current time is used.  */
 143   int timestamp;
 144   bfd_boolean (*in_reloc_p) (bfd *, reloc_howto_type *);
 145   flagword real_flags;
 146
 147   /* Build-id info.  */
 148   struct
 149   {
 150     bfd_boolean (*after_write_object_contents) (bfd *);
 151     const char *style;
 152     asection *sec;
 153   } build_id;
 154 } pe_data_type;
 155
 156 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 157
 158 /* Tdata for XCOFF files.  */
 159
 160 struct xcoff_tdata
 161 {
 162   /* Basic COFF information.  */
 163   coff_data_type coff;
 164
 165   /* TRUE if this is an XCOFF64 file. */
 166   bfd_boolean xcoff64;
 167
 168   /* TRUE if a large a.out header should be generated.  */
 169   bfd_boolean full_aouthdr;
 170
 171   /* TOC value.  */
 172   bfd_vma toc;
 173
 174   /* Index of section holding TOC.  */
 175   int sntoc;
 176
 177   /* Index of section holding entry point.  */
 178   int snentry;
 179
 180   /* .text alignment from optional header.  */
 181   int text_align_power;
 182
 183   /* .data alignment from optional header.  */
 184   int data_align_power;
 185
 186   /* modtype from optional header.  */
 187   short modtype;
 188
 189   /* cputype from optional header.  */
 190   short cputype;
 191
 192   /* maxdata from optional header.  */
 193   bfd_vma maxdata;
 194
 195   /* maxstack from optional header.  */
 196   bfd_vma maxstack;
 197
 198   /* Used by the XCOFF backend linker.  */
 199   asection **csects;
 200   long *debug_indices;
 201   unsigned int *lineno_counts;
 202   unsigned int import_file_id;
 203 };
 204
 205 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 206
 207 /* We take the address of the first element of an asymbol to ensure that the
 208    macro is only ever applied to an asymbol.  */
 209 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 210
 211 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 212
 213 struct xcoff_section_tdata
 214 {
 215   /* Used for XCOFF csects created by the linker; points to the real
 216      XCOFF section which contains this csect.  */
 217   asection *enclosing;
 218   /* The lineno_count field for the enclosing section, because we are
 219      going to clobber it there.  */
 220   unsigned int lineno_count;
 221   /* The first and last symbol indices for symbols used by this csect.  */
 222   unsigned long first_symndx;
 223   unsigned long last_symndx;
 224 };
 225
 226 /* An accessor macro the xcoff_section_tdata structure.  */
 227 #define xcoff_section_data(abfd, sec) \
 228   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 229
 230 /* Tdata for sections in PE files.  */
 231
 232 struct pei_section_tdata
 233 {
 234   /* The virtual size of the section.  */
 235   bfd_size_type virt_size;
 236   /* The PE section flags.  */
 237   long pe_flags;
 238 };
 239
 240 /* An accessor macro for the pei_section_tdata structure.  */
 241 #define pei_section_data(abfd, sec) \
 242   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 243
 244 /* COFF linker hash table entries.  */
 245
 246 struct coff_link_hash_entry
 247 {
 248   struct bfd_link_hash_entry root;
 249
 250   /* Symbol index in output file.  This is initialized to -1.  It is
 251      set to -2 if the symbol is used by a reloc.  It is set to -3 if
 252      this symbol is defined in a discarded section.  */
 253   long indx;
 254
 255   /* Symbol type.  */
 256   unsigned short type;
 257
 258   /* Symbol class.  */
 259   unsigned char symbol_class;
 260
 261   /* Number of auxiliary entries.  */
 262   char numaux;
 263
 264   /* BFD to take auxiliary entries from.  */
 265   bfd *auxbfd;
 266
 267   /* Pointer to array of auxiliary entries, if any.  */
 268   union internal_auxent *aux;
 269
 270   /* Flag word; legal values follow.  */
 271   unsigned short coff_link_hash_flags;
 272   /* Symbol is a PE section symbol.  */
 273 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 274 };
 275
 276 /* COFF linker hash table.  */
 277
 278 struct coff_link_hash_table
 279 {
 280   struct bfd_link_hash_table root;
 281   /* A pointer to information used to link stabs in sections.  */
 282   struct stab_info stab_info;
 283 };
 284
 285 struct coff_reloc_cookie
 286 {
 287   struct internal_reloc *         rels;
 288   struct internal_reloc *         rel;
 289   struct internal_reloc *         relend;
 290   struct coff_symbol_struct *     symbols;      /* Symtab for input bfd.  */
 291   bfd *                           abfd;
 292   struct coff_link_hash_entry **  sym_hashes;
 293 };
 294
 295 /* Look up an entry in a COFF linker hash table.  */
 296
 297 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 298   ((struct coff_link_hash_entry *)                                      \
 299    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 300                          (copy), (follow)))
 301
 302 /* Traverse a COFF linker hash table.  */
 303
 304 #define coff_link_hash_traverse(table, func, info)                      \
 305   (bfd_link_hash_traverse                                               \
 306    (&(table)->root,                                                     \
 307     (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
 308     (info)))
 309
 310 /* Get the COFF linker hash table from a link_info structure.  */
 311
 312 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 313
 314 /* Functions in coffgen.c.  */
 315 extern bfd_cleanup coff_object_p
 316   (bfd *);
 317 extern struct bfd_section *coff_section_from_bfd_index
 318   (bfd *, int);
 319 extern long coff_get_symtab_upper_bound
 320   (bfd *);
 321 extern long coff_canonicalize_symtab
 322   (bfd *, asymbol **);
 323 extern int coff_count_linenumbers
 324   (bfd *);
 325 extern bfd_boolean coff_renumber_symbols
 326   (bfd *, int *);
 327 extern void coff_mangle_symbols
 328   (bfd *);
 329 extern bfd_boolean coff_write_symbols
 330   (bfd *);
 331 extern bfd_boolean coff_write_alien_symbol
 332   (bfd *, asymbol *, struct internal_syment *, union internal_auxent *,
 333    bfd_vma *, bfd_size_type *, asection **, bfd_size_type *);
 334 extern bfd_boolean coff_write_linenumbers
 335   (bfd *);
 336 extern alent *coff_get_lineno
 337   (bfd *, asymbol *);
 338 extern asymbol *coff_section_symbol
 339   (bfd *, char *);
 340 extern bfd_boolean _bfd_coff_get_external_symbols
 341   (bfd *);
 342 extern const char *_bfd_coff_read_string_table
 343   (bfd *);
 344 extern bfd_boolean _bfd_coff_free_symbols
 345   (bfd *);
 346 extern struct coff_ptr_struct *coff_get_normalized_symtab
 347   (bfd *);
 348 extern long coff_get_reloc_upper_bound
 349   (bfd *, sec_ptr);
 350 extern asymbol *coff_make_empty_symbol
 351   (bfd *);
 352 extern void coff_print_symbol
 353   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 354 extern void coff_get_symbol_info
 355   (bfd *, asymbol *, symbol_info *ret);
 356 #define coff_get_symbol_version_string \
 357   _bfd_nosymbols_get_symbol_version_string
 358 extern bfd_boolean _bfd_coff_is_local_label_name
 359   (bfd *, const char *);
 360 extern asymbol *coff_bfd_make_debug_symbol
 361   (bfd *, void *, unsigned long);
 362 extern bfd_boolean coff_find_nearest_line
 363   (bfd *, asymbol **, asection *, bfd_vma,
 364    const char **, const char **, unsigned int *, unsigned int *);
 365 #define coff_find_line _bfd_nosymbols_find_line
 366 struct dwarf_debug_section;
 367 extern bfd_boolean coff_find_nearest_line_with_names
 368   (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **,
 369    unsigned int *, const struct dwarf_debug_section *);
 370 extern bfd_boolean coff_find_inliner_info
 371   (bfd *, const char **, const char **, unsigned int *);
 372 extern int coff_sizeof_headers
 373   (bfd *, struct bfd_link_info *);
 374 extern bfd_boolean bfd_coff_reloc16_relax_section
 375   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 376 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 377   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 378    bfd_byte *, bfd_boolean, asymbol **);
 379 extern bfd_vma bfd_coff_reloc16_get_value
 380   (arelent *, struct bfd_link_info *, asection *);
 381 extern void bfd_perform_slip
 382   (bfd *, unsigned int, asection *, bfd_vma);
 383 extern bfd_boolean _bfd_coff_close_and_cleanup
 384   (bfd *);
 385
 386 /* Functions and types in cofflink.c.  */
 387
 388 #define STRING_SIZE_SIZE 4
 389
 390 /* We use a hash table to merge identical enum, struct, and union
 391    definitions in the linker.  */
 392
 393 /* Information we keep for a single element (an enum value, a
 394    structure or union field) in the debug merge hash table.  */
 395
 396 struct coff_debug_merge_element
 397 {
 398   /* Next element.  */
 399   struct coff_debug_merge_element *next;
 400
 401   /* Name.  */
 402   const char *name;
 403
 404   /* Type.  */
 405   unsigned int type;
 406
 407   /* Symbol index for complex type.  */
 408   long tagndx;
 409 };
 410
 411 /* A linked list of debug merge entries for a given name.  */
 412
 413 struct coff_debug_merge_type
 414 {
 415   /* Next type with the same name.  */
 416   struct coff_debug_merge_type *next;
 417
 418   /* Class of type.  */
 419   int type_class;
 420
 421   /* Symbol index where this type is defined.  */
 422   long indx;
 423
 424   /* List of elements.  */
 425   struct coff_debug_merge_element *elements;
 426 };
 427
 428 /* Information we store in the debug merge hash table.  */
 429
 430 struct coff_debug_merge_hash_entry
 431 {
 432   struct bfd_hash_entry root;
 433
 434   /* A list of types with this name.  */
 435   struct coff_debug_merge_type *types;
 436 };
 437
 438 /* The debug merge hash table.  */
 439
 440 struct coff_debug_merge_hash_table
 441 {
 442   struct bfd_hash_table root;
 443 };
 444
 445 /* Initialize a COFF debug merge hash table.  */
 446
 447 #define coff_debug_merge_hash_table_init(table) \
 448   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc, \
 449                         sizeof (struct coff_debug_merge_hash_entry)))
 450
 451 /* Free a COFF debug merge hash table.  */
 452
 453 #define coff_debug_merge_hash_table_free(table) \
 454   (bfd_hash_table_free (&(table)->root))
 455
 456 /* Look up an entry in a COFF debug merge hash table.  */
 457
 458 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 459   ((struct coff_debug_merge_hash_entry *) \
 460    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 461
 462 /* Information we keep for each section in the output file when doing
 463    a relocatable link.  */
 464
 465 struct coff_link_section_info
 466 {
 467   /* The relocs to be output.  */
 468   struct internal_reloc *relocs;
 469   /* For each reloc against a global symbol whose index was not known
 470      when the reloc was handled, the global hash table entry.  */
 471   struct coff_link_hash_entry **rel_hashes;
 472 };
 473
 474 /* Information that we pass around while doing the final link step.  */
 475
 476 struct coff_final_link_info
 477 {
 478   /* General link information.  */
 479   struct bfd_link_info *info;
 480   /* Output BFD.  */
 481   bfd *output_bfd;
 482   /* Used to indicate failure in traversal routine.  */
 483   bfd_boolean failed;
 484   /* If doing "task linking" set only during the time when we want the
 485      global symbol writer to convert the storage class of defined global
 486      symbols from global to static. */
 487   bfd_boolean global_to_static;
 488   /* Hash table for long symbol names.  */
 489   struct bfd_strtab_hash *strtab;
 490   /* When doing a relocatable link, an array of information kept for
 491      each output section, indexed by the target_index field.  */
 492   struct coff_link_section_info *section_info;
 493   /* Symbol index of last C_FILE symbol (-1 if none).  */
 494   long last_file_index;
 495   /* Contents of last C_FILE symbol.  */
 496   struct internal_syment last_file;
 497   /* Symbol index of first aux entry of last .bf symbol with an empty
 498      endndx field (-1 if none).  */
 499   long last_bf_index;
 500   /* Contents of last_bf_index aux entry.  */
 501   union internal_auxent last_bf;
 502   /* Hash table used to merge debug information.  */
 503   struct coff_debug_merge_hash_table debug_merge;
 504   /* Buffer large enough to hold swapped symbols of any input file.  */
 505   struct internal_syment *internal_syms;
 506   /* Buffer large enough to hold sections of symbols of any input file.  */
 507   asection **sec_ptrs;
 508   /* Buffer large enough to hold output indices of symbols of any
 509      input file.  */
 510   long *sym_indices;
 511   /* Buffer large enough to hold output symbols for any input file.  */
 512   bfd_byte *outsyms;
 513   /* Buffer large enough to hold external line numbers for any input
 514      section.  */
 515   bfd_byte *linenos;
 516   /* Buffer large enough to hold any input section.  */
 517   bfd_byte *contents;
 518   /* Buffer large enough to hold external relocs of any input section.  */
 519   bfd_byte *external_relocs;
 520   /* Buffer large enough to hold swapped relocs of any input section.  */
 521   struct internal_reloc *internal_relocs;
 522 };
 523
 524 /* Most COFF variants have no way to record the alignment of a
 525    section.  This struct is used to set a specific alignment based on
 526    the name of the section.  */
 527
 528 struct coff_section_alignment_entry
 529 {
 530   /* The section name.  */
 531   const char *name;
 532
 533   /* This is either (unsigned int) -1, indicating that the section
 534      name must match exactly, or it is the number of letters which
 535      must match at the start of the name.  */
 536   unsigned int comparison_length;
 537
 538   /* These macros may be used to fill in the first two fields in a
 539      structure initialization.  */
 540 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 541 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 542
 543   /* Only use this entry if the default section alignment for this
 544      target is at least that much (as a power of two).  If this field
 545      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 546   unsigned int default_alignment_min;
 547
 548   /* Only use this entry if the default section alignment for this
 549      target is no greater than this (as a power of two).  If this
 550      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 551   unsigned int default_alignment_max;
 552
 553 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 554
 555   /* The desired alignment for this section (as a power of two).  */
 556   unsigned int alignment_power;
 557 };
 558
 559 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 560   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 561 extern bfd_boolean _bfd_coff_link_hash_table_init
 562   (struct coff_link_hash_table *, bfd *,
 563    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 564                                struct bfd_hash_table *,
 565                                const char *),
 566    unsigned int);
 567 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 568   (bfd *);
 569 extern const char *_bfd_coff_internal_syment_name
 570   (bfd *, const struct internal_syment *, char *);
 571 extern bfd_boolean _bfd_coff_section_already_linked
 572   (bfd *, asection *, struct bfd_link_info *);
 573 extern bfd_boolean _bfd_coff_link_add_symbols
 574   (bfd *, struct bfd_link_info *);
 575 extern bfd_boolean _bfd_coff_final_link
 576   (bfd *, struct bfd_link_info *);
 577 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 578   (bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
 579    struct internal_reloc *);
 580 extern bfd_boolean _bfd_coff_generic_relocate_section
 581   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 582    struct internal_reloc *, struct internal_syment *, asection **);
 583 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 584   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 585 extern bfd_boolean _bfd_coff_write_global_sym
 586   (struct bfd_hash_entry *, void *);
 587 extern bfd_boolean _bfd_coff_write_task_globals
 588   (struct coff_link_hash_entry *, void *);
 589 extern bfd_boolean _bfd_coff_link_input_bfd
 590   (struct coff_final_link_info *, bfd *);
 591 extern bfd_boolean _bfd_coff_reloc_link_order
 592   (bfd *, struct coff_final_link_info *, asection *,
 593    struct bfd_link_order *);
 594 extern bfd_boolean bfd_coff_gc_sections
 595   (bfd *, struct bfd_link_info *);
 596 extern const char *bfd_coff_group_name
 597   (bfd *, const asection *);
 598
 599 #define coff_get_section_contents_in_window \
 600   _bfd_generic_get_section_contents_in_window
 601
 602 /* Functions in xcofflink.c.  */
 603
 604 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 605   (bfd *);
 606 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 607   (bfd *, asymbol **);
 608 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 609   (bfd *);
 610 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 611   (bfd *, arelent **, asymbol **);
 612 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 613   (bfd *);
 614 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 615   (bfd *, struct bfd_link_info *);
 616 extern bfd_boolean _bfd_xcoff_bfd_final_link
 617   (bfd *, struct bfd_link_info *);
 618 extern bfd_boolean _bfd_xcoff_define_common_symbol
 619   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 620 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 621   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 622    struct internal_reloc *, struct internal_syment *, asection **);
 623
 624 /* Functions in coff-ppc.c.  FIXME: These are called by pe.em in the
 625    linker, and so should start with bfd and be declared in bfd.h.  */
 626
 627 extern bfd_boolean ppc_allocate_toc_section
 628   (struct bfd_link_info *);
 629 extern bfd_boolean ppc_process_before_allocation
 630   (bfd *, struct bfd_link_info *);
 631 /* Extracted from coffcode.h.  */
 632
 633 typedef struct coff_ptr_struct
 634 {
 635   /* Remembers the offset from the first symbol in the file for
 636      this symbol. Generated by coff_renumber_symbols.  */
 637   unsigned int offset;
 638
 639   /* Should the value of this symbol be renumbered.  Used for
 640      XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 641   unsigned int fix_value : 1;
 642
 643   /* Should the tag field of this symbol be renumbered.
 644      Created by coff_pointerize_aux.  */
 645   unsigned int fix_tag : 1;
 646
 647   /* Should the endidx field of this symbol be renumbered.
 648      Created by coff_pointerize_aux.  */
 649   unsigned int fix_end : 1;
 650
 651   /* Should the x_csect.x_scnlen field be renumbered.
 652      Created by coff_pointerize_aux.  */
 653   unsigned int fix_scnlen : 1;
 654
 655   /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 656      index into the line number entries.  Set by coff_slurp_symbol_table.  */
 657   unsigned int fix_line : 1;
 658
 659   /* The container for the symbol structure as read and translated
 660      from the file.  */
 661   union
 662   {
 663     union internal_auxent auxent;
 664     struct internal_syment syment;
 665   } u;
 666
 667  /* Selector for the union above.  */
 668  bfd_boolean is_sym;
 669 } combined_entry_type;
 670
 671
 672 /* Each canonical asymbol really looks like this: */
 673
 674 typedef struct coff_symbol_struct
 675 {
 676   /* The actual symbol which the rest of BFD works with */
 677   asymbol symbol;
 678
 679   /* A pointer to the hidden information for this symbol */
 680   combined_entry_type *native;
 681
 682   /* A pointer to the linenumber information for this symbol */
 683   struct lineno_cache_entry *lineno;
 684
 685   /* Have the line numbers been relocated yet ? */
 686   bfd_boolean done_lineno;
 687 } coff_symbol_type;
 688 /* COFF symbol classifications.  */
 689
 690 enum coff_symbol_classification
 691 {
 692   /* Global symbol.  */
 693   COFF_SYMBOL_GLOBAL,
 694   /* Common symbol.  */
 695   COFF_SYMBOL_COMMON,
 696   /* Undefined symbol.  */
 697   COFF_SYMBOL_UNDEFINED,
 698   /* Local symbol.  */
 699   COFF_SYMBOL_LOCAL,
 700   /* PE section symbol.  */
 701   COFF_SYMBOL_PE_SECTION
 702 };
 703
 704 typedef asection * (*coff_gc_mark_hook_fn)
 705   (asection *, struct bfd_link_info *, struct internal_reloc *,
 706    struct coff_link_hash_entry *, struct internal_syment *);
 707
 708 typedef struct
 709 {
 710   void (*_bfd_coff_swap_aux_in)
 711     (bfd *, void *, int, int, int, int, void *);
 712
 713   void (*_bfd_coff_swap_sym_in)
 714     (bfd *, void *, void *);
 715
 716   void (*_bfd_coff_swap_lineno_in)
 717     (bfd *, void *, void *);
 718
 719   unsigned int (*_bfd_coff_swap_aux_out)
 720     (bfd *, void *, int, int, int, int, void *);
 721
 722   unsigned int (*_bfd_coff_swap_sym_out)
 723     (bfd *, void *, void *);
 724
 725   unsigned int (*_bfd_coff_swap_lineno_out)
 726     (bfd *, void *, void *);
 727
 728   unsigned int (*_bfd_coff_swap_reloc_out)
 729     (bfd *, void *, void *);
 730
 731   unsigned int (*_bfd_coff_swap_filehdr_out)
 732     (bfd *, void *, void *);
 733
 734   unsigned int (*_bfd_coff_swap_aouthdr_out)
 735     (bfd *, void *, void *);
 736
 737   unsigned int (*_bfd_coff_swap_scnhdr_out)
 738     (bfd *, void *, void *);
 739
 740   unsigned int _bfd_filhsz;
 741   unsigned int _bfd_aoutsz;
 742   unsigned int _bfd_scnhsz;
 743   unsigned int _bfd_symesz;
 744   unsigned int _bfd_auxesz;
 745   unsigned int _bfd_relsz;
 746   unsigned int _bfd_linesz;
 747   unsigned int _bfd_filnmlen;
 748   bfd_boolean _bfd_coff_long_filenames;
 749
 750   bfd_boolean _bfd_coff_long_section_names;
 751   bfd_boolean (*_bfd_coff_set_long_section_names)
 752     (bfd *, int);
 753
 754   unsigned int _bfd_coff_default_section_alignment_power;
 755   bfd_boolean _bfd_coff_force_symnames_in_strings;
 756   unsigned int _bfd_coff_debug_string_prefix_length;
 757   unsigned int _bfd_coff_max_nscns;
 758
 759   void (*_bfd_coff_swap_filehdr_in)
 760     (bfd *, void *, void *);
 761
 762   void (*_bfd_coff_swap_aouthdr_in)
 763     (bfd *, void *, void *);
 764
 765   void (*_bfd_coff_swap_scnhdr_in)
 766     (bfd *, void *, void *);
 767
 768   void (*_bfd_coff_swap_reloc_in)
 769     (bfd *abfd, void *, void *);
 770
 771   bfd_boolean (*_bfd_coff_bad_format_hook)
 772     (bfd *, void *);
 773
 774   bfd_boolean (*_bfd_coff_set_arch_mach_hook)
 775     (bfd *, void *);
 776
 777   void * (*_bfd_coff_mkobject_hook)
 778     (bfd *, void *, void *);
 779
 780   bfd_boolean (*_bfd_styp_to_sec_flags_hook)
 781     (bfd *, void *, const char *, asection *, flagword *);
 782
 783   void (*_bfd_set_alignment_hook)
 784     (bfd *, asection *, void *);
 785
 786   bfd_boolean (*_bfd_coff_slurp_symbol_table)
 787     (bfd *);
 788
 789   bfd_boolean (*_bfd_coff_symname_in_debug)
 790     (bfd *, struct internal_syment *);
 791
 792   bfd_boolean (*_bfd_coff_pointerize_aux_hook)
 793     (bfd *, combined_entry_type *, combined_entry_type *,
 794      unsigned int, combined_entry_type *);
 795
 796   bfd_boolean (*_bfd_coff_print_aux)
 797     (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 798      combined_entry_type *, unsigned int);
 799
 800   void (*_bfd_coff_reloc16_extra_cases)
 801     (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 802      bfd_byte *, unsigned int *, unsigned int *);
 803
 804   int (*_bfd_coff_reloc16_estimate)
 805     (bfd *, asection *, arelent *, unsigned int,
 806      struct bfd_link_info *);
 807
 808   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 809     (bfd *, struct internal_syment *);
 810
 811   bfd_boolean (*_bfd_coff_compute_section_file_positions)
 812     (bfd *);
 813
 814   bfd_boolean (*_bfd_coff_start_final_link)
 815     (bfd *, struct bfd_link_info *);
 816
 817   bfd_boolean (*_bfd_coff_relocate_section)
 818     (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 819      struct internal_reloc *, struct internal_syment *, asection **);
 820
 821   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 822     (bfd *, asection *, struct internal_reloc *,
 823      struct coff_link_hash_entry *, struct internal_syment *, bfd_vma *);
 824
 825   bfd_boolean (*_bfd_coff_adjust_symndx)
 826     (bfd *, struct bfd_link_info *, bfd *, asection *,
 827      struct internal_reloc *, bfd_boolean *);
 828
 829   bfd_boolean (*_bfd_coff_link_add_one_symbol)
 830     (struct bfd_link_info *, bfd *, const char *, flagword,
 831      asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
 832      struct bfd_link_hash_entry **);
 833
 834   bfd_boolean (*_bfd_coff_link_output_has_begun)
 835     (bfd *, struct coff_final_link_info *);
 836
 837   bfd_boolean (*_bfd_coff_final_link_postscript)
 838     (bfd *, struct coff_final_link_info *);
 839
 840   bfd_boolean (*_bfd_coff_print_pdata)
 841     (bfd *, void *);
 842
 843 } bfd_coff_backend_data;
 844
 845 #define coff_backend_info(abfd) \
 846   ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 847
 848 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 849   ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 850
 851 #define bfd_coff_swap_sym_in(a,e,i) \
 852   ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 853
 854 #define bfd_coff_swap_lineno_in(a,e,i) \
 855   ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 856
 857 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 858   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 859
 860 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 861   ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 862
 863 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 864   ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 865
 866 #define bfd_coff_swap_sym_out(abfd, i,o) \
 867   ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 868
 869 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 870   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 871
 872 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 873   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 874
 875 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 876   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 877
 878 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 879 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 880 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 881 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 882 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 883 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 884 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 885 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 886 #define bfd_coff_long_filenames(abfd) \
 887   (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 888 #define bfd_coff_long_section_names(abfd) \
 889   (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 890 #define bfd_coff_set_long_section_names(abfd, enable) \
 891   ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
 892 #define bfd_coff_default_section_alignment_power(abfd) \
 893   (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 894 #define bfd_coff_max_nscns(abfd) \
 895   (coff_backend_info (abfd)->_bfd_coff_max_nscns)
 896
 897 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 898   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 899
 900 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 901   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 902
 903 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 904   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 905
 906 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 907   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 908
 909 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 910   ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 911
 912 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 913   ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 914 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 915   ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
 916    (abfd, filehdr, aouthdr))
 917
 918 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
 919   ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 920    (abfd, scnhdr, name, section, flags_ptr))
 921
 922 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 923   ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 924
 925 #define bfd_coff_slurp_symbol_table(abfd)\
 926   ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 927
 928 #define bfd_coff_symname_in_debug(abfd, sym)\
 929   ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 930
 931 #define bfd_coff_force_symnames_in_strings(abfd)\
 932   (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 933
 934 #define bfd_coff_debug_string_prefix_length(abfd)\
 935   (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 936
 937 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 938   ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 939    (abfd, file, base, symbol, aux, indaux))
 940
 941 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
 942                                      reloc, data, src_ptr, dst_ptr)\
 943   ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 944    (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 945
 946 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 947   ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 948    (abfd, section, reloc, shrink, link_info))
 949
 950 #define bfd_coff_classify_symbol(abfd, sym)\
 951   ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 952    (abfd, sym))
 953
 954 #define bfd_coff_compute_section_file_positions(abfd)\
 955   ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 956    (abfd))
 957
 958 #define bfd_coff_start_final_link(obfd, info)\
 959   ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 960    (obfd, info))
 961 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
 962   ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
 963    (obfd, info, ibfd, o, con, rel, isyms, secs))
 964 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
 965   ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
 966    (abfd, sec, rel, h, sym, addendp))
 967 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
 968   ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
 969    (obfd, info, ibfd, sec, rel, adjustedp))
 970 #define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
 971                                      value, string, cp, coll, hashp)\
 972   ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 973    (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 974
 975 #define bfd_coff_link_output_has_begun(a,p) \
 976   ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
 977 #define bfd_coff_final_link_postscript(a,p) \
 978   ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
 979
 980 #define bfd_coff_have_print_pdata(a) \
 981   (coff_backend_info (a)->_bfd_coff_print_pdata)
 982 #define bfd_coff_print_pdata(a,p) \
 983   ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
 984
 985 /* Macro: Returns true if the bfd is a PE executable as opposed to a
 986    PE object file.  */
 987 #define bfd_pei_p(abfd) \
 988   (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))
 989 #ifdef __cplusplus
 990 }
 991 #endif
 992 #endif