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_symbols(bfd)              (coff_data (bfd)->symbols)
  41 #define obj_sym_filepos(bfd)          (coff_data (bfd)->sym_filepos)
  42 #define obj_relocbase(bfd)            (coff_data (bfd)->relocbase)
  43 #define obj_raw_syments(bfd)          (coff_data (bfd)->raw_syments)
  44 #define obj_raw_syment_count(bfd)     (coff_data (bfd)->raw_syment_count)
  45 #define obj_convert(bfd)              (coff_data (bfd)->conversion_table)
  46 #define obj_conv_table_size(bfd)      (coff_data (bfd)->conv_table_size)
  47 #define obj_coff_external_syms(bfd)   (coff_data (bfd)->external_syms)
  48 #define obj_coff_keep_syms(bfd)       (coff_data (bfd)->keep_syms)
  49 #define obj_coff_strings(bfd)         (coff_data (bfd)->strings)
  50 #define obj_coff_strings_len(bfd)     (coff_data (bfd)->strings_len)
  51 #define obj_coff_keep_strings(bfd)    (coff_data (bfd)->keep_strings)
  52 #define obj_coff_sym_hashes(bfd)      (coff_data (bfd)->sym_hashes)
  53 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  54 #define obj_coff_local_toc_table(bfd) (coff_data (bfd)->local_toc_sym_map)
  55
  56 /* `Tdata' information kept for COFF files.  */
  57
  58 typedef struct coff_tdata
  59 {
  60   struct coff_symbol_struct *symbols;   /* Symtab for input bfd.  */
  61   unsigned int *conversion_table;
  62   int conv_table_size;
  63   file_ptr sym_filepos;
  64
  65   struct coff_ptr_struct *raw_syments;
  66   unsigned long raw_syment_count;
  67
  68   /* These are only valid once writing has begun.  */
  69   unsigned long int relocbase;
  70
  71   /* These members communicate important constants about the symbol table
  72      to GDB's symbol-reading code.  These `constants' unfortunately vary
  73      from coff implementation to implementation...  */
  74   unsigned local_n_btmask;
  75   unsigned local_n_btshft;
  76   unsigned local_n_tmask;
  77   unsigned local_n_tshift;
  78   unsigned local_symesz;
  79   unsigned local_auxesz;
  80   unsigned local_linesz;
  81
  82   /* The unswapped external symbols.  May be NULL.  Read by
  83      _bfd_coff_get_external_symbols.  */
  84   void * external_syms;
  85   /* If this is TRUE, the external_syms may not be freed.  */
  86   bfd_boolean keep_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   /* If this is TRUE, the strings may not be freed.  */
  94   bfd_boolean keep_strings;
  95   /* If this is TRUE, the strings have been written out already.  */
  96   bfd_boolean strings_written;
  97
  98   /* Is this a PE format coff file?  */
  99   int pe;
 100   /* Used by the COFF backend linker.  */
 101   struct coff_link_hash_entry **sym_hashes;
 102
 103   /* Used by the pe linker for PowerPC.  */
 104   int *local_toc_sym_map;
 105
 106   struct bfd_link_info *link_info;
 107
 108   /* Used by coff_find_nearest_line.  */
 109   void * line_info;
 110
 111   /* A place to stash dwarf2 info for this bfd.  */
 112   void * dwarf2_find_line_info;
 113
 114   /* The timestamp from the COFF file header.  */
 115   long timestamp;
 116
 117   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 118      used by ARM code.  */
 119   flagword flags;
 120
 121   /* coff-stgo32 EXE stub header after BFD tdata has been allocated.  Its data
 122      is kept in internal_filehdr.go32stub beforehand.  */
 123   char *go32stub;
 124 } coff_data_type;
 125
 126 /* Tdata for pe image files.  */
 127 typedef struct pe_tdata
 128 {
 129   coff_data_type coff;
 130   struct internal_extra_pe_aouthdr pe_opthdr;
 131   int dll;
 132   int has_reloc_section;
 133   int dont_strip_reloc;
 134   int dos_message[16];
 135   bfd_boolean insert_timestamp;
 136   bfd_boolean (*in_reloc_p) (bfd *, reloc_howto_type *);
 137   flagword real_flags;
 138
 139   /* Build-id info.  */
 140   struct
 141   {
 142     bfd_boolean (*after_write_object_contents) (bfd *);
 143     const char *style;
 144     asection *sec;
 145   } build_id;
 146 } pe_data_type;
 147
 148 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 149
 150 /* Tdata for XCOFF files.  */
 151
 152 struct xcoff_tdata
 153 {
 154   /* Basic COFF information.  */
 155   coff_data_type coff;
 156
 157   /* TRUE if this is an XCOFF64 file. */
 158   bfd_boolean xcoff64;
 159
 160   /* TRUE if a large a.out header should be generated.  */
 161   bfd_boolean full_aouthdr;
 162
 163   /* TOC value.  */
 164   bfd_vma toc;
 165
 166   /* Index of section holding TOC.  */
 167   int sntoc;
 168
 169   /* Index of section holding entry point.  */
 170   int snentry;
 171
 172   /* .text alignment from optional header.  */
 173   int text_align_power;
 174
 175   /* .data alignment from optional header.  */
 176   int data_align_power;
 177
 178   /* modtype from optional header.  */
 179   short modtype;
 180
 181   /* cputype from optional header.  */
 182   short cputype;
 183
 184   /* maxdata from optional header.  */
 185   bfd_vma maxdata;
 186
 187   /* maxstack from optional header.  */
 188   bfd_vma maxstack;
 189
 190   /* Used by the XCOFF backend linker.  */
 191   asection **csects;
 192   long *debug_indices;
 193   unsigned int *lineno_counts;
 194   unsigned int import_file_id;
 195 };
 196
 197 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 198
 199 /* We take the address of the first element of an asymbol to ensure that the
 200    macro is only ever applied to an asymbol.  */
 201 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 202
 203 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 204
 205 struct xcoff_section_tdata
 206 {
 207   /* Used for XCOFF csects created by the linker; points to the real
 208      XCOFF section which contains this csect.  */
 209   asection *enclosing;
 210   /* The lineno_count field for the enclosing section, because we are
 211      going to clobber it there.  */
 212   unsigned int lineno_count;
 213   /* The first and last symbol indices for symbols used by this csect.  */
 214   unsigned long first_symndx;
 215   unsigned long last_symndx;
 216 };
 217
 218 /* An accessor macro the xcoff_section_tdata structure.  */
 219 #define xcoff_section_data(abfd, sec) \
 220   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 221
 222 /* Tdata for sections in PE files.  */
 223
 224 struct pei_section_tdata
 225 {
 226   /* The virtual size of the section.  */
 227   bfd_size_type virt_size;
 228   /* The PE section flags.  */
 229   long pe_flags;
 230 };
 231
 232 /* An accessor macro for the pei_section_tdata structure.  */
 233 #define pei_section_data(abfd, sec) \
 234   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 235
 236 /* COFF linker hash table entries.  */
 237
 238 struct coff_link_hash_entry
 239 {
 240   struct bfd_link_hash_entry root;
 241
 242   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 243      there is a reloc against this symbol.  */
 244   long indx;
 245
 246   /* Symbol type.  */
 247   unsigned short type;
 248
 249   /* Symbol class.  */
 250   unsigned char symbol_class;
 251
 252   /* Number of auxiliary entries.  */
 253   char numaux;
 254
 255   /* BFD to take auxiliary entries from.  */
 256   bfd *auxbfd;
 257
 258   /* Pointer to array of auxiliary entries, if any.  */
 259   union internal_auxent *aux;
 260
 261   /* Flag word; legal values follow.  */
 262   unsigned short coff_link_hash_flags;
 263   /* Symbol is a PE section symbol.  */
 264 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 265 };
 266
 267 /* COFF linker hash table.  */
 268
 269 struct coff_link_hash_table
 270 {
 271   struct bfd_link_hash_table root;
 272   /* A pointer to information used to link stabs in sections.  */
 273   struct stab_info stab_info;
 274 };
 275
 276 struct coff_reloc_cookie
 277 {
 278   struct internal_reloc *         rels;
 279   struct internal_reloc *         rel;
 280   struct internal_reloc *         relend;
 281   struct coff_symbol_struct *     symbols;      /* Symtab for input bfd.  */
 282   bfd *                           abfd;
 283   struct coff_link_hash_entry **  sym_hashes;
 284 };
 285
 286 /* Look up an entry in a COFF linker hash table.  */
 287
 288 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 289   ((struct coff_link_hash_entry *)                                      \
 290    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 291                          (copy), (follow)))
 292
 293 /* Traverse a COFF linker hash table.  */
 294
 295 #define coff_link_hash_traverse(table, func, info)                      \
 296   (bfd_link_hash_traverse                                               \
 297    (&(table)->root,                                                     \
 298     (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
 299     (info)))
 300
 301 /* Get the COFF linker hash table from a link_info structure.  */
 302
 303 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 304
 305 /* Functions in coffgen.c.  */
 306 extern bfd_cleanup coff_object_p
 307   (bfd *);
 308 extern struct bfd_section *coff_section_from_bfd_index
 309   (bfd *, int);
 310 extern long coff_get_symtab_upper_bound
 311   (bfd *);
 312 extern long coff_canonicalize_symtab
 313   (bfd *, asymbol **);
 314 extern int coff_count_linenumbers
 315   (bfd *);
 316 extern bfd_boolean coff_renumber_symbols
 317   (bfd *, int *);
 318 extern void coff_mangle_symbols
 319   (bfd *);
 320 extern bfd_boolean coff_write_symbols
 321   (bfd *);
 322 extern bfd_boolean coff_write_alien_symbol
 323   (bfd *, asymbol *, struct internal_syment *, union internal_auxent *,
 324    bfd_vma *, bfd_size_type *, asection **, bfd_size_type *);
 325 extern bfd_boolean coff_write_linenumbers
 326   (bfd *);
 327 extern alent *coff_get_lineno
 328   (bfd *, asymbol *);
 329 extern asymbol *coff_section_symbol
 330   (bfd *, char *);
 331 extern bfd_boolean _bfd_coff_get_external_symbols
 332   (bfd *);
 333 extern const char *_bfd_coff_read_string_table
 334   (bfd *);
 335 extern bfd_boolean _bfd_coff_free_symbols
 336   (bfd *);
 337 extern struct coff_ptr_struct *coff_get_normalized_symtab
 338   (bfd *);
 339 extern long coff_get_reloc_upper_bound
 340   (bfd *, sec_ptr);
 341 extern asymbol *coff_make_empty_symbol
 342   (bfd *);
 343 extern void coff_print_symbol
 344   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 345 extern void coff_get_symbol_info
 346   (bfd *, asymbol *, symbol_info *ret);
 347 #define coff_get_symbol_version_string \
 348   _bfd_nosymbols_get_symbol_version_string
 349 extern bfd_boolean _bfd_coff_is_local_label_name
 350   (bfd *, const char *);
 351 extern asymbol *coff_bfd_make_debug_symbol
 352   (bfd *, void *, unsigned long);
 353 extern bfd_boolean coff_find_nearest_line
 354   (bfd *, asymbol **, asection *, bfd_vma,
 355    const char **, const char **, unsigned int *, unsigned int *);
 356 #define coff_find_line _bfd_nosymbols_find_line
 357 struct dwarf_debug_section;
 358 extern bfd_boolean coff_find_nearest_line_with_names
 359   (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **,
 360    unsigned int *, const struct dwarf_debug_section *);
 361 extern bfd_boolean coff_find_inliner_info
 362   (bfd *, const char **, const char **, unsigned int *);
 363 extern int coff_sizeof_headers
 364   (bfd *, struct bfd_link_info *);
 365 extern bfd_boolean bfd_coff_reloc16_relax_section
 366   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 367 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 368   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 369    bfd_byte *, bfd_boolean, asymbol **);
 370 extern bfd_vma bfd_coff_reloc16_get_value
 371   (arelent *, struct bfd_link_info *, asection *);
 372 extern void bfd_perform_slip
 373   (bfd *, unsigned int, asection *, bfd_vma);
 374 extern bfd_boolean _bfd_coff_close_and_cleanup
 375   (bfd *);
 376
 377 /* Functions and types in cofflink.c.  */
 378
 379 #define STRING_SIZE_SIZE 4
 380
 381 /* We use a hash table to merge identical enum, struct, and union
 382    definitions in the linker.  */
 383
 384 /* Information we keep for a single element (an enum value, a
 385    structure or union field) in the debug merge hash table.  */
 386
 387 struct coff_debug_merge_element
 388 {
 389   /* Next element.  */
 390   struct coff_debug_merge_element *next;
 391
 392   /* Name.  */
 393   const char *name;
 394
 395   /* Type.  */
 396   unsigned int type;
 397
 398   /* Symbol index for complex type.  */
 399   long tagndx;
 400 };
 401
 402 /* A linked list of debug merge entries for a given name.  */
 403
 404 struct coff_debug_merge_type
 405 {
 406   /* Next type with the same name.  */
 407   struct coff_debug_merge_type *next;
 408
 409   /* Class of type.  */
 410   int type_class;
 411
 412   /* Symbol index where this type is defined.  */
 413   long indx;
 414
 415   /* List of elements.  */
 416   struct coff_debug_merge_element *elements;
 417 };
 418
 419 /* Information we store in the debug merge hash table.  */
 420
 421 struct coff_debug_merge_hash_entry
 422 {
 423   struct bfd_hash_entry root;
 424
 425   /* A list of types with this name.  */
 426   struct coff_debug_merge_type *types;
 427 };
 428
 429 /* The debug merge hash table.  */
 430
 431 struct coff_debug_merge_hash_table
 432 {
 433   struct bfd_hash_table root;
 434 };
 435
 436 /* Initialize a COFF debug merge hash table.  */
 437
 438 #define coff_debug_merge_hash_table_init(table) \
 439   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc, \
 440                         sizeof (struct coff_debug_merge_hash_entry)))
 441
 442 /* Free a COFF debug merge hash table.  */
 443
 444 #define coff_debug_merge_hash_table_free(table) \
 445   (bfd_hash_table_free (&(table)->root))
 446
 447 /* Look up an entry in a COFF debug merge hash table.  */
 448
 449 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 450   ((struct coff_debug_merge_hash_entry *) \
 451    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 452
 453 /* Information we keep for each section in the output file when doing
 454    a relocatable link.  */
 455
 456 struct coff_link_section_info
 457 {
 458   /* The relocs to be output.  */
 459   struct internal_reloc *relocs;
 460   /* For each reloc against a global symbol whose index was not known
 461      when the reloc was handled, the global hash table entry.  */
 462   struct coff_link_hash_entry **rel_hashes;
 463 };
 464
 465 /* Information that we pass around while doing the final link step.  */
 466
 467 struct coff_final_link_info
 468 {
 469   /* General link information.  */
 470   struct bfd_link_info *info;
 471   /* Output BFD.  */
 472   bfd *output_bfd;
 473   /* Used to indicate failure in traversal routine.  */
 474   bfd_boolean failed;
 475   /* If doing "task linking" set only during the time when we want the
 476      global symbol writer to convert the storage class of defined global
 477      symbols from global to static. */
 478   bfd_boolean global_to_static;
 479   /* Hash table for long symbol names.  */
 480   struct bfd_strtab_hash *strtab;
 481   /* When doing a relocatable link, an array of information kept for
 482      each output section, indexed by the target_index field.  */
 483   struct coff_link_section_info *section_info;
 484   /* Symbol index of last C_FILE symbol (-1 if none).  */
 485   long last_file_index;
 486   /* Contents of last C_FILE symbol.  */
 487   struct internal_syment last_file;
 488   /* Symbol index of first aux entry of last .bf symbol with an empty
 489      endndx field (-1 if none).  */
 490   long last_bf_index;
 491   /* Contents of last_bf_index aux entry.  */
 492   union internal_auxent last_bf;
 493   /* Hash table used to merge debug information.  */
 494   struct coff_debug_merge_hash_table debug_merge;
 495   /* Buffer large enough to hold swapped symbols of any input file.  */
 496   struct internal_syment *internal_syms;
 497   /* Buffer large enough to hold sections of symbols of any input file.  */
 498   asection **sec_ptrs;
 499   /* Buffer large enough to hold output indices of symbols of any
 500      input file.  */
 501   long *sym_indices;
 502   /* Buffer large enough to hold output symbols for any input file.  */
 503   bfd_byte *outsyms;
 504   /* Buffer large enough to hold external line numbers for any input
 505      section.  */
 506   bfd_byte *linenos;
 507   /* Buffer large enough to hold any input section.  */
 508   bfd_byte *contents;
 509   /* Buffer large enough to hold external relocs of any input section.  */
 510   bfd_byte *external_relocs;
 511   /* Buffer large enough to hold swapped relocs of any input section.  */
 512   struct internal_reloc *internal_relocs;
 513 };
 514
 515 /* Most COFF variants have no way to record the alignment of a
 516    section.  This struct is used to set a specific alignment based on
 517    the name of the section.  */
 518
 519 struct coff_section_alignment_entry
 520 {
 521   /* The section name.  */
 522   const char *name;
 523
 524   /* This is either (unsigned int) -1, indicating that the section
 525      name must match exactly, or it is the number of letters which
 526      must match at the start of the name.  */
 527   unsigned int comparison_length;
 528
 529   /* These macros may be used to fill in the first two fields in a
 530      structure initialization.  */
 531 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 532 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 533
 534   /* Only use this entry if the default section alignment for this
 535      target is at least that much (as a power of two).  If this field
 536      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 537   unsigned int default_alignment_min;
 538
 539   /* Only use this entry if the default section alignment for this
 540      target is no greater than this (as a power of two).  If this
 541      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 542   unsigned int default_alignment_max;
 543
 544 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 545
 546   /* The desired alignment for this section (as a power of two).  */
 547   unsigned int alignment_power;
 548 };
 549
 550 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 551   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 552 extern bfd_boolean _bfd_coff_link_hash_table_init
 553   (struct coff_link_hash_table *, bfd *,
 554    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 555                                struct bfd_hash_table *,
 556                                const char *),
 557    unsigned int);
 558 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 559   (bfd *);
 560 extern const char *_bfd_coff_internal_syment_name
 561   (bfd *, const struct internal_syment *, char *);
 562 extern bfd_boolean _bfd_coff_section_already_linked
 563   (bfd *, asection *, struct bfd_link_info *);
 564 extern bfd_boolean _bfd_coff_link_add_symbols
 565   (bfd *, struct bfd_link_info *);
 566 extern bfd_boolean _bfd_coff_final_link
 567   (bfd *, struct bfd_link_info *);
 568 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 569   (bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
 570    struct internal_reloc *);
 571 extern bfd_boolean _bfd_coff_generic_relocate_section
 572   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 573    struct internal_reloc *, struct internal_syment *, asection **);
 574 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 575   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 576 extern bfd_boolean _bfd_coff_write_global_sym
 577   (struct bfd_hash_entry *, void *);
 578 extern bfd_boolean _bfd_coff_write_task_globals
 579   (struct coff_link_hash_entry *, void *);
 580 extern bfd_boolean _bfd_coff_link_input_bfd
 581   (struct coff_final_link_info *, bfd *);
 582 extern bfd_boolean _bfd_coff_reloc_link_order
 583   (bfd *, struct coff_final_link_info *, asection *,
 584    struct bfd_link_order *);
 585 extern bfd_boolean bfd_coff_gc_sections
 586   (bfd *, struct bfd_link_info *);
 587 extern const char *bfd_coff_group_name
 588   (bfd *, const asection *);
 589
 590 #define coff_get_section_contents_in_window \
 591   _bfd_generic_get_section_contents_in_window
 592
 593 /* Functions in xcofflink.c.  */
 594
 595 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 596   (bfd *);
 597 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 598   (bfd *, asymbol **);
 599 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 600   (bfd *);
 601 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 602   (bfd *, arelent **, asymbol **);
 603 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 604   (bfd *);
 605 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 606   (bfd *, struct bfd_link_info *);
 607 extern bfd_boolean _bfd_xcoff_bfd_final_link
 608   (bfd *, struct bfd_link_info *);
 609 extern bfd_boolean _bfd_xcoff_define_common_symbol
 610   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 611 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 612   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 613    struct internal_reloc *, struct internal_syment *, asection **);
 614
 615 /* Functions in coff-ppc.c.  FIXME: These are called by pe.em in the
 616    linker, and so should start with bfd and be declared in bfd.h.  */
 617
 618 extern bfd_boolean ppc_allocate_toc_section
 619   (struct bfd_link_info *);
 620 extern bfd_boolean ppc_process_before_allocation
 621   (bfd *, struct bfd_link_info *);
 622 /* Extracted from coffcode.h.  */
 623
 624 typedef struct coff_ptr_struct
 625 {
 626   /* Remembers the offset from the first symbol in the file for
 627      this symbol. Generated by coff_renumber_symbols.  */
 628   unsigned int offset;
 629
 630   /* Should the value of this symbol be renumbered.  Used for
 631      XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 632   unsigned int fix_value : 1;
 633
 634   /* Should the tag field of this symbol be renumbered.
 635      Created by coff_pointerize_aux.  */
 636   unsigned int fix_tag : 1;
 637
 638   /* Should the endidx field of this symbol be renumbered.
 639      Created by coff_pointerize_aux.  */
 640   unsigned int fix_end : 1;
 641
 642   /* Should the x_csect.x_scnlen field be renumbered.
 643      Created by coff_pointerize_aux.  */
 644   unsigned int fix_scnlen : 1;
 645
 646   /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 647      index into the line number entries.  Set by coff_slurp_symbol_table.  */
 648   unsigned int fix_line : 1;
 649
 650   /* The container for the symbol structure as read and translated
 651      from the file.  */
 652   union
 653   {
 654     union internal_auxent auxent;
 655     struct internal_syment syment;
 656   } u;
 657
 658  /* Selector for the union above.  */
 659  bfd_boolean is_sym;
 660 } combined_entry_type;
 661
 662
 663 /* Each canonical asymbol really looks like this: */
 664
 665 typedef struct coff_symbol_struct
 666 {
 667   /* The actual symbol which the rest of BFD works with */
 668   asymbol symbol;
 669
 670   /* A pointer to the hidden information for this symbol */
 671   combined_entry_type *native;
 672
 673   /* A pointer to the linenumber information for this symbol */
 674   struct lineno_cache_entry *lineno;
 675
 676   /* Have the line numbers been relocated yet ? */
 677   bfd_boolean done_lineno;
 678 } coff_symbol_type;
 679 /* COFF symbol classifications.  */
 680
 681 enum coff_symbol_classification
 682 {
 683   /* Global symbol.  */
 684   COFF_SYMBOL_GLOBAL,
 685   /* Common symbol.  */
 686   COFF_SYMBOL_COMMON,
 687   /* Undefined symbol.  */
 688   COFF_SYMBOL_UNDEFINED,
 689   /* Local symbol.  */
 690   COFF_SYMBOL_LOCAL,
 691   /* PE section symbol.  */
 692   COFF_SYMBOL_PE_SECTION
 693 };
 694
 695 typedef asection * (*coff_gc_mark_hook_fn)
 696   (asection *, struct bfd_link_info *, struct internal_reloc *,
 697    struct coff_link_hash_entry *, struct internal_syment *);
 698
 699 typedef struct
 700 {
 701   void (*_bfd_coff_swap_aux_in)
 702     (bfd *, void *, int, int, int, int, void *);
 703
 704   void (*_bfd_coff_swap_sym_in)
 705     (bfd *, void *, void *);
 706
 707   void (*_bfd_coff_swap_lineno_in)
 708     (bfd *, void *, void *);
 709
 710   unsigned int (*_bfd_coff_swap_aux_out)
 711     (bfd *, void *, int, int, int, int, void *);
 712
 713   unsigned int (*_bfd_coff_swap_sym_out)
 714     (bfd *, void *, void *);
 715
 716   unsigned int (*_bfd_coff_swap_lineno_out)
 717     (bfd *, void *, void *);
 718
 719   unsigned int (*_bfd_coff_swap_reloc_out)
 720     (bfd *, void *, void *);
 721
 722   unsigned int (*_bfd_coff_swap_filehdr_out)
 723     (bfd *, void *, void *);
 724
 725   unsigned int (*_bfd_coff_swap_aouthdr_out)
 726     (bfd *, void *, void *);
 727
 728   unsigned int (*_bfd_coff_swap_scnhdr_out)
 729     (bfd *, void *, void *);
 730
 731   unsigned int _bfd_filhsz;
 732   unsigned int _bfd_aoutsz;
 733   unsigned int _bfd_scnhsz;
 734   unsigned int _bfd_symesz;
 735   unsigned int _bfd_auxesz;
 736   unsigned int _bfd_relsz;
 737   unsigned int _bfd_linesz;
 738   unsigned int _bfd_filnmlen;
 739   bfd_boolean _bfd_coff_long_filenames;
 740
 741   bfd_boolean _bfd_coff_long_section_names;
 742   bfd_boolean (*_bfd_coff_set_long_section_names)
 743     (bfd *, int);
 744
 745   unsigned int _bfd_coff_default_section_alignment_power;
 746   bfd_boolean _bfd_coff_force_symnames_in_strings;
 747   unsigned int _bfd_coff_debug_string_prefix_length;
 748   unsigned int _bfd_coff_max_nscns;
 749
 750   void (*_bfd_coff_swap_filehdr_in)
 751     (bfd *, void *, void *);
 752
 753   void (*_bfd_coff_swap_aouthdr_in)
 754     (bfd *, void *, void *);
 755
 756   void (*_bfd_coff_swap_scnhdr_in)
 757     (bfd *, void *, void *);
 758
 759   void (*_bfd_coff_swap_reloc_in)
 760     (bfd *abfd, void *, void *);
 761
 762   bfd_boolean (*_bfd_coff_bad_format_hook)
 763     (bfd *, void *);
 764
 765   bfd_boolean (*_bfd_coff_set_arch_mach_hook)
 766     (bfd *, void *);
 767
 768   void * (*_bfd_coff_mkobject_hook)
 769     (bfd *, void *, void *);
 770
 771   bfd_boolean (*_bfd_styp_to_sec_flags_hook)
 772     (bfd *, void *, const char *, asection *, flagword *);
 773
 774   void (*_bfd_set_alignment_hook)
 775     (bfd *, asection *, void *);
 776
 777   bfd_boolean (*_bfd_coff_slurp_symbol_table)
 778     (bfd *);
 779
 780   bfd_boolean (*_bfd_coff_symname_in_debug)
 781     (bfd *, struct internal_syment *);
 782
 783   bfd_boolean (*_bfd_coff_pointerize_aux_hook)
 784     (bfd *, combined_entry_type *, combined_entry_type *,
 785      unsigned int, combined_entry_type *);
 786
 787   bfd_boolean (*_bfd_coff_print_aux)
 788     (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 789      combined_entry_type *, unsigned int);
 790
 791   void (*_bfd_coff_reloc16_extra_cases)
 792     (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 793      bfd_byte *, unsigned int *, unsigned int *);
 794
 795   int (*_bfd_coff_reloc16_estimate)
 796     (bfd *, asection *, arelent *, unsigned int,
 797      struct bfd_link_info *);
 798
 799   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 800     (bfd *, struct internal_syment *);
 801
 802   bfd_boolean (*_bfd_coff_compute_section_file_positions)
 803     (bfd *);
 804
 805   bfd_boolean (*_bfd_coff_start_final_link)
 806     (bfd *, struct bfd_link_info *);
 807
 808   bfd_boolean (*_bfd_coff_relocate_section)
 809     (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 810      struct internal_reloc *, struct internal_syment *, asection **);
 811
 812   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 813     (bfd *, asection *, struct internal_reloc *,
 814      struct coff_link_hash_entry *, struct internal_syment *, 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-"))
 980 #ifdef __cplusplus
 981 }
 982 #endif
 983 #endif