bfd/libcoff.h

   1 /* DO NOT EDIT!  -*- buffer-read-only: t -*-  This file is automatically
   2    generated from "libcoff-in.h" and "coffcode.h".
   3    Run "make headers" in your build bfd/ to regenerate.  */
   4
   5 /* BFD COFF object file private structure.
   6    Copyright (C) 1990-2014 Free Software Foundation, Inc.
   7    Written by Cygnus Support.
   8
   9    This file is part of BFD, the Binary File Descriptor library.
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software
  23    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  24    MA 02110-1301, USA.  */
  25
  26 #include "bfdlink.h"
  27
  28 /* Object file tdata; access macros.  */
  29
  30 #define coff_data(bfd)                ((bfd)->tdata.coff_obj_data)
  31 #define obj_pe(bfd)                   (coff_data (bfd)->pe)
  32 #define obj_symbols(bfd)              (coff_data (bfd)->symbols)
  33 #define obj_sym_filepos(bfd)          (coff_data (bfd)->sym_filepos)
  34 #define obj_relocbase(bfd)            (coff_data (bfd)->relocbase)
  35 #define obj_raw_syments(bfd)          (coff_data (bfd)->raw_syments)
  36 #define obj_raw_syment_count(bfd)     (coff_data (bfd)->raw_syment_count)
  37 #define obj_convert(bfd)              (coff_data (bfd)->conversion_table)
  38 #define obj_conv_table_size(bfd)      (coff_data (bfd)->conv_table_size)
  39 #define obj_coff_external_syms(bfd)   (coff_data (bfd)->external_syms)
  40 #define obj_coff_keep_syms(bfd)       (coff_data (bfd)->keep_syms)
  41 #define obj_coff_strings(bfd)         (coff_data (bfd)->strings)
  42 #define obj_coff_keep_strings(bfd)    (coff_data (bfd)->keep_strings)
  43 #define obj_coff_sym_hashes(bfd)      (coff_data (bfd)->sym_hashes)
  44 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  45 #define obj_coff_local_toc_table(bfd) (coff_data (bfd)->local_toc_sym_map)
  46
  47 /* `Tdata' information kept for COFF files.  */
  48
  49 typedef struct coff_tdata
  50 {
  51   struct coff_symbol_struct *symbols;   /* Symtab for input bfd.  */
  52   unsigned int *conversion_table;
  53   int conv_table_size;
  54   file_ptr sym_filepos;
  55
  56   struct coff_ptr_struct *raw_syments;
  57   unsigned long raw_syment_count;
  58
  59   /* These are only valid once writing has begun.  */
  60   long int relocbase;
  61
  62   /* These members communicate important constants about the symbol table
  63      to GDB's symbol-reading code.  These `constants' unfortunately vary
  64      from coff implementation to implementation...  */
  65   unsigned local_n_btmask;
  66   unsigned local_n_btshft;
  67   unsigned local_n_tmask;
  68   unsigned local_n_tshift;
  69   unsigned local_symesz;
  70   unsigned local_auxesz;
  71   unsigned local_linesz;
  72
  73   /* The unswapped external symbols.  May be NULL.  Read by
  74      _bfd_coff_get_external_symbols.  */
  75   void * external_syms;
  76   /* If this is TRUE, the external_syms may not be freed.  */
  77   bfd_boolean keep_syms;
  78
  79   /* The string table.  May be NULL.  Read by
  80      _bfd_coff_read_string_table.  */
  81   char *strings;
  82   /* If this is TRUE, the strings may not be freed.  */
  83   bfd_boolean keep_strings;
  84   /* If this is TRUE, the strings have been written out already.  */
  85   bfd_boolean strings_written;
  86
  87   /* Is this a PE format coff file?  */
  88   int pe;
  89   /* Used by the COFF backend linker.  */
  90   struct coff_link_hash_entry **sym_hashes;
  91
  92   /* Used by the pe linker for PowerPC.  */
  93   int *local_toc_sym_map;
  94
  95   struct bfd_link_info *link_info;
  96
  97   /* Used by coff_find_nearest_line.  */
  98   void * line_info;
  99
 100   /* A place to stash dwarf2 info for this bfd.  */
 101   void * dwarf2_find_line_info;
 102
 103   /* The timestamp from the COFF file header.  */
 104   long timestamp;
 105
 106   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 107      used by ARM code.  */
 108   flagword flags;
 109
 110   /* coff-stgo32 EXE stub header after BFD tdata has been allocated.  Its data
 111      is kept in internal_filehdr.go32stub beforehand.  */
 112   char *go32stub;
 113 } coff_data_type;
 114
 115 /* Tdata for pe image files.  */
 116 typedef struct pe_tdata
 117 {
 118   coff_data_type coff;
 119   struct internal_extra_pe_aouthdr pe_opthdr;
 120   int dll;
 121   int has_reloc_section;
 122   int dont_strip_reloc;
 123   bfd_boolean insert_timestamp;
 124   bfd_boolean (*in_reloc_p) (bfd *, reloc_howto_type *);
 125   flagword real_flags;
 126 } pe_data_type;
 127
 128 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 129
 130 /* Tdata for XCOFF files.  */
 131
 132 struct xcoff_tdata
 133 {
 134   /* Basic COFF information.  */
 135   coff_data_type coff;
 136
 137   /* TRUE if this is an XCOFF64 file. */
 138   bfd_boolean xcoff64;
 139
 140   /* TRUE if a large a.out header should be generated.  */
 141   bfd_boolean full_aouthdr;
 142
 143   /* TOC value.  */
 144   bfd_vma toc;
 145
 146   /* Index of section holding TOC.  */
 147   int sntoc;
 148
 149   /* Index of section holding entry point.  */
 150   int snentry;
 151
 152   /* .text alignment from optional header.  */
 153   int text_align_power;
 154
 155   /* .data alignment from optional header.  */
 156   int data_align_power;
 157
 158   /* modtype from optional header.  */
 159   short modtype;
 160
 161   /* cputype from optional header.  */
 162   short cputype;
 163
 164   /* maxdata from optional header.  */
 165   bfd_vma maxdata;
 166
 167   /* maxstack from optional header.  */
 168   bfd_vma maxstack;
 169
 170   /* Used by the XCOFF backend linker.  */
 171   asection **csects;
 172   long *debug_indices;
 173   unsigned int *lineno_counts;
 174   unsigned int import_file_id;
 175 };
 176
 177 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 178
 179 /* We take the address of the first element of an asymbol to ensure that the
 180    macro is only ever applied to an asymbol.  */
 181 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 182
 183 /* The used_by_bfd field of a section may be set to a pointer to this
 184    structure.  */
 185
 186 struct coff_section_tdata
 187 {
 188   /* The relocs, swapped into COFF internal form.  This may be NULL.  */
 189   struct internal_reloc *relocs;
 190   /* If this is TRUE, the relocs entry may not be freed.  */
 191   bfd_boolean keep_relocs;
 192   /* The section contents.  This may be NULL.  */
 193   bfd_byte *contents;
 194   /* If this is TRUE, the contents entry may not be freed.  */
 195   bfd_boolean keep_contents;
 196   /* Information cached by coff_find_nearest_line.  */
 197   bfd_vma offset;
 198   unsigned int i;
 199   const char *function;
 200   /* Optional information about a COMDAT entry; NULL if not COMDAT. */
 201   struct coff_comdat_info *comdat;
 202   int line_base;
 203   /* A pointer used for .stab linking optimizations.  */
 204   void * stab_info;
 205   /* Available for individual backends.  */
 206   void * tdata;
 207 };
 208
 209 /* An accessor macro for the coff_section_tdata structure.  */
 210 #define coff_section_data(abfd, sec) \
 211   ((struct coff_section_tdata *) (sec)->used_by_bfd)
 212
 213 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 214
 215 struct xcoff_section_tdata
 216 {
 217   /* Used for XCOFF csects created by the linker; points to the real
 218      XCOFF section which contains this csect.  */
 219   asection *enclosing;
 220   /* The lineno_count field for the enclosing section, because we are
 221      going to clobber it there.  */
 222   unsigned int lineno_count;
 223   /* The first and last symbol indices for symbols used by this csect.  */
 224   unsigned long first_symndx;
 225   unsigned long last_symndx;
 226 };
 227
 228 /* An accessor macro the xcoff_section_tdata structure.  */
 229 #define xcoff_section_data(abfd, sec) \
 230   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 231
 232 /* Tdata for sections in PE files.  */
 233
 234 struct pei_section_tdata
 235 {
 236   /* The virtual size of the section.  */
 237   bfd_size_type virt_size;
 238   /* The PE section flags.  */
 239   long pe_flags;
 240 };
 241
 242 /* An accessor macro for the pei_section_tdata structure.  */
 243 #define pei_section_data(abfd, sec) \
 244   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 245
 246 /* COFF linker hash table entries.  */
 247
 248 struct coff_link_hash_entry
 249 {
 250   struct bfd_link_hash_entry root;
 251
 252   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 253      there is a reloc against this symbol.  */
 254   long indx;
 255
 256   /* Symbol type.  */
 257   unsigned short type;
 258
 259   /* Symbol class.  */
 260   unsigned char symbol_class;
 261
 262   /* Number of auxiliary entries.  */
 263   char numaux;
 264
 265   /* BFD to take auxiliary entries from.  */
 266   bfd *auxbfd;
 267
 268   /* Pointer to array of auxiliary entries, if any.  */
 269   union internal_auxent *aux;
 270
 271   /* Flag word; legal values follow.  */
 272   unsigned short coff_link_hash_flags;
 273   /* Symbol is a PE section symbol.  */
 274 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 275 };
 276
 277 /* COFF linker hash table.  */
 278
 279 struct coff_link_hash_table
 280 {
 281   struct bfd_link_hash_table root;
 282   /* A pointer to information used to link stabs in sections.  */
 283   struct stab_info stab_info;
 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 const bfd_target *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 struct coff_symbol_struct *coff_symbol_from
 317   (bfd *, asymbol *);
 318 extern bfd_boolean coff_renumber_symbols
 319   (bfd *, int *);
 320 extern void coff_mangle_symbols
 321   (bfd *);
 322 extern bfd_boolean coff_write_symbols
 323   (bfd *);
 324 extern bfd_boolean coff_write_alien_symbol
 325   (bfd *, asymbol *, struct internal_syment *, bfd_vma *,
 326    bfd_size_type *, asection **, bfd_size_type *);
 327 extern bfd_boolean coff_write_linenumbers
 328   (bfd *);
 329 extern alent *coff_get_lineno
 330   (bfd *, asymbol *);
 331 extern asymbol *coff_section_symbol
 332   (bfd *, char *);
 333 extern bfd_boolean _bfd_coff_get_external_symbols
 334   (bfd *);
 335 extern const char *_bfd_coff_read_string_table
 336   (bfd *);
 337 extern bfd_boolean _bfd_coff_free_symbols
 338   (bfd *);
 339 extern struct coff_ptr_struct *coff_get_normalized_symtab
 340   (bfd *);
 341 extern long coff_get_reloc_upper_bound
 342   (bfd *, sec_ptr);
 343 extern asymbol *coff_make_empty_symbol
 344   (bfd *);
 345 extern void coff_print_symbol
 346   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 347 extern void coff_get_symbol_info
 348   (bfd *, asymbol *, symbol_info *ret);
 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 *, asection *, asymbol **, bfd_vma, const char **,
 355    const char **, unsigned int *);
 356 extern bfd_boolean coff_find_nearest_line_discriminator
 357   (bfd *, asection *, asymbol **, bfd_vma, const char **,
 358    const char **, unsigned int *, unsigned int *);
 359 struct dwarf_debug_section;
 360 extern bfd_boolean coff_find_nearest_line_with_names
 361   (bfd *, const struct dwarf_debug_section *, asection *, asymbol **,
 362    bfd_vma, const char **, const char **, unsigned int *);
 363 extern bfd_boolean coff_find_inliner_info
 364   (bfd *, const char **, const char **, unsigned int *);
 365 extern int coff_sizeof_headers
 366   (bfd *, struct bfd_link_info *);
 367 extern bfd_boolean bfd_coff_reloc16_relax_section
 368   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 369 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 370   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 371    bfd_byte *, bfd_boolean, asymbol **);
 372 extern bfd_vma bfd_coff_reloc16_get_value
 373   (arelent *, struct bfd_link_info *, asection *);
 374 extern void bfd_perform_slip
 375   (bfd *, unsigned int, asection *, bfd_vma);
 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
 586
 587 #define coff_get_section_contents_in_window \
 588   _bfd_generic_get_section_contents_in_window
 589
 590 /* Functions in xcofflink.c.  */
 591
 592 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 593   (bfd *);
 594 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 595   (bfd *, asymbol **);
 596 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 597   (bfd *);
 598 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 599   (bfd *, arelent **, asymbol **);
 600 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 601   (bfd *);
 602 extern void _bfd_xcoff_bfd_link_hash_table_free
 603   (struct bfd_link_hash_table *);
 604 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 605   (bfd *, struct bfd_link_info *);
 606 extern bfd_boolean _bfd_xcoff_bfd_final_link
 607   (bfd *, struct bfd_link_info *);
 608 extern bfd_boolean _bfd_xcoff_define_common_symbol
 609   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 610 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 611   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 612    struct internal_reloc *, struct internal_syment *, asection **);
 613
 614 /* Functions in coff-ppc.c.  FIXME: These are called by pe.em in the
 615    linker, and so should start with bfd and be declared in bfd.h.  */
 616
 617 extern bfd_boolean ppc_allocate_toc_section
 618   (struct bfd_link_info *);
 619 extern bfd_boolean ppc_process_before_allocation
 620   (bfd *, struct bfd_link_info *);
 621 /* Extracted from coffcode.h.  */
 622 typedef struct coff_ptr_struct
 623 {
 624   /* Remembers the offset from the first symbol in the file for
 625      this symbol. Generated by coff_renumber_symbols. */
 626   unsigned int offset;
 627
 628   /* Should the value of this symbol be renumbered.  Used for
 629      XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 630   unsigned int fix_value : 1;
 631
 632   /* Should the tag field of this symbol be renumbered.
 633      Created by coff_pointerize_aux. */
 634   unsigned int fix_tag : 1;
 635
 636   /* Should the endidx field of this symbol be renumbered.
 637      Created by coff_pointerize_aux. */
 638   unsigned int fix_end : 1;
 639
 640   /* Should the x_csect.x_scnlen field be renumbered.
 641      Created by coff_pointerize_aux. */
 642   unsigned int fix_scnlen : 1;
 643
 644   /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 645      index into the line number entries.  Set by coff_slurp_symbol_table.  */
 646   unsigned int fix_line : 1;
 647
 648   /* The container for the symbol structure as read and translated
 649      from the file. */
 650   union
 651   {
 652     union internal_auxent auxent;
 653     struct internal_syment syment;
 654   } u;
 655 } combined_entry_type;
 656
 657
 658 /* Each canonical asymbol really looks like this: */
 659
 660 typedef struct coff_symbol_struct
 661 {
 662   /* The actual symbol which the rest of BFD works with */
 663   asymbol symbol;
 664
 665   /* A pointer to the hidden information for this symbol */
 666   combined_entry_type *native;
 667
 668   /* A pointer to the linenumber information for this symbol */
 669   struct lineno_cache_entry *lineno;
 670
 671   /* Have the line numbers been relocated yet ? */
 672   bfd_boolean done_lineno;
 673 } coff_symbol_type;
 674 /* COFF symbol classifications.  */
 675
 676 enum coff_symbol_classification
 677 {
 678   /* Global symbol.  */
 679   COFF_SYMBOL_GLOBAL,
 680   /* Common symbol.  */
 681   COFF_SYMBOL_COMMON,
 682   /* Undefined symbol.  */
 683   COFF_SYMBOL_UNDEFINED,
 684   /* Local symbol.  */
 685   COFF_SYMBOL_LOCAL,
 686   /* PE section symbol.  */
 687   COFF_SYMBOL_PE_SECTION
 688 };
 689
 690 typedef struct
 691 {
 692   void (*_bfd_coff_swap_aux_in)
 693     (bfd *, void *, int, int, int, int, void *);
 694
 695   void (*_bfd_coff_swap_sym_in)
 696     (bfd *, void *, void *);
 697
 698   void (*_bfd_coff_swap_lineno_in)
 699     (bfd *, void *, void *);
 700
 701   unsigned int (*_bfd_coff_swap_aux_out)
 702     (bfd *, void *, int, int, int, int, void *);
 703
 704   unsigned int (*_bfd_coff_swap_sym_out)
 705     (bfd *, void *, void *);
 706
 707   unsigned int (*_bfd_coff_swap_lineno_out)
 708     (bfd *, void *, void *);
 709
 710   unsigned int (*_bfd_coff_swap_reloc_out)
 711     (bfd *, void *, void *);
 712
 713   unsigned int (*_bfd_coff_swap_filehdr_out)
 714     (bfd *, void *, void *);
 715
 716   unsigned int (*_bfd_coff_swap_aouthdr_out)
 717     (bfd *, void *, void *);
 718
 719   unsigned int (*_bfd_coff_swap_scnhdr_out)
 720     (bfd *, void *, void *);
 721
 722   unsigned int _bfd_filhsz;
 723   unsigned int _bfd_aoutsz;
 724   unsigned int _bfd_scnhsz;
 725   unsigned int _bfd_symesz;
 726   unsigned int _bfd_auxesz;
 727   unsigned int _bfd_relsz;
 728   unsigned int _bfd_linesz;
 729   unsigned int _bfd_filnmlen;
 730   bfd_boolean _bfd_coff_long_filenames;
 731
 732   bfd_boolean _bfd_coff_long_section_names;
 733   bfd_boolean (*_bfd_coff_set_long_section_names)
 734     (bfd *, int);
 735
 736   unsigned int _bfd_coff_default_section_alignment_power;
 737   bfd_boolean _bfd_coff_force_symnames_in_strings;
 738   unsigned int _bfd_coff_debug_string_prefix_length;
 739
 740   void (*_bfd_coff_swap_filehdr_in)
 741     (bfd *, void *, void *);
 742
 743   void (*_bfd_coff_swap_aouthdr_in)
 744     (bfd *, void *, void *);
 745
 746   void (*_bfd_coff_swap_scnhdr_in)
 747     (bfd *, void *, void *);
 748
 749   void (*_bfd_coff_swap_reloc_in)
 750     (bfd *abfd, void *, void *);
 751
 752   bfd_boolean (*_bfd_coff_bad_format_hook)
 753     (bfd *, void *);
 754
 755   bfd_boolean (*_bfd_coff_set_arch_mach_hook)
 756     (bfd *, void *);
 757
 758   void * (*_bfd_coff_mkobject_hook)
 759     (bfd *, void *, void *);
 760
 761   bfd_boolean (*_bfd_styp_to_sec_flags_hook)
 762     (bfd *, void *, const char *, asection *, flagword *);
 763
 764   void (*_bfd_set_alignment_hook)
 765     (bfd *, asection *, void *);
 766
 767   bfd_boolean (*_bfd_coff_slurp_symbol_table)
 768     (bfd *);
 769
 770   bfd_boolean (*_bfd_coff_symname_in_debug)
 771     (bfd *, struct internal_syment *);
 772
 773   bfd_boolean (*_bfd_coff_pointerize_aux_hook)
 774     (bfd *, combined_entry_type *, combined_entry_type *,
 775             unsigned int, combined_entry_type *);
 776
 777   bfd_boolean (*_bfd_coff_print_aux)
 778     (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 779             combined_entry_type *, unsigned int);
 780
 781   void (*_bfd_coff_reloc16_extra_cases)
 782     (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 783            bfd_byte *, unsigned int *, unsigned int *);
 784
 785   int (*_bfd_coff_reloc16_estimate)
 786     (bfd *, asection *, arelent *, unsigned int,
 787             struct bfd_link_info *);
 788
 789   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 790     (bfd *, struct internal_syment *);
 791
 792   bfd_boolean (*_bfd_coff_compute_section_file_positions)
 793     (bfd *);
 794
 795   bfd_boolean (*_bfd_coff_start_final_link)
 796     (bfd *, struct bfd_link_info *);
 797
 798   bfd_boolean (*_bfd_coff_relocate_section)
 799     (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 800             struct internal_reloc *, struct internal_syment *, asection **);
 801
 802   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 803     (bfd *, asection *, struct internal_reloc *,
 804             struct coff_link_hash_entry *, struct internal_syment *,
 805             bfd_vma *);
 806
 807   bfd_boolean (*_bfd_coff_adjust_symndx)
 808     (bfd *, struct bfd_link_info *, bfd *, asection *,
 809             struct internal_reloc *, bfd_boolean *);
 810
 811   bfd_boolean (*_bfd_coff_link_add_one_symbol)
 812     (struct bfd_link_info *, bfd *, const char *, flagword,
 813             asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
 814             struct bfd_link_hash_entry **);
 815
 816   bfd_boolean (*_bfd_coff_link_output_has_begun)
 817     (bfd *, struct coff_final_link_info *);
 818
 819   bfd_boolean (*_bfd_coff_final_link_postscript)
 820     (bfd *, struct coff_final_link_info *);
 821
 822   bfd_boolean (*_bfd_coff_print_pdata)
 823     (bfd *, void *);
 824
 825 } bfd_coff_backend_data;
 826
 827 #define coff_backend_info(abfd) \
 828   ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 829
 830 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 831   ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 832
 833 #define bfd_coff_swap_sym_in(a,e,i) \
 834   ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 835
 836 #define bfd_coff_swap_lineno_in(a,e,i) \
 837   ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 838
 839 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 840   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 841
 842 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 843   ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 844
 845 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 846   ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 847
 848 #define bfd_coff_swap_sym_out(abfd, i,o) \
 849   ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 850
 851 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 852   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 853
 854 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 855   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 856
 857 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 858   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 859
 860 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 861 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 862 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 863 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 864 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 865 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 866 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 867 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 868 #define bfd_coff_long_filenames(abfd) \
 869   (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 870 #define bfd_coff_long_section_names(abfd) \
 871   (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 872 #define bfd_coff_set_long_section_names(abfd, enable) \
 873   ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
 874 #define bfd_coff_default_section_alignment_power(abfd) \
 875   (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 876 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 877   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 878
 879 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 880   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 881
 882 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 883   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 884
 885 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 886   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 887
 888 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 889   ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 890
 891 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 892   ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 893 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 894   ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
 895    (abfd, filehdr, aouthdr))
 896
 897 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
 898   ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 899    (abfd, scnhdr, name, section, flags_ptr))
 900
 901 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 902   ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 903
 904 #define bfd_coff_slurp_symbol_table(abfd)\
 905   ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 906
 907 #define bfd_coff_symname_in_debug(abfd, sym)\
 908   ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 909
 910 #define bfd_coff_force_symnames_in_strings(abfd)\
 911   (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 912
 913 #define bfd_coff_debug_string_prefix_length(abfd)\
 914   (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 915
 916 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 917   ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 918    (abfd, file, base, symbol, aux, indaux))
 919
 920 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
 921                                      reloc, data, src_ptr, dst_ptr)\
 922   ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 923    (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 924
 925 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 926   ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 927    (abfd, section, reloc, shrink, link_info))
 928
 929 #define bfd_coff_classify_symbol(abfd, sym)\
 930   ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 931    (abfd, sym))
 932
 933 #define bfd_coff_compute_section_file_positions(abfd)\
 934   ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 935    (abfd))
 936
 937 #define bfd_coff_start_final_link(obfd, info)\
 938   ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 939    (obfd, info))
 940 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
 941   ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
 942    (obfd, info, ibfd, o, con, rel, isyms, secs))
 943 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
 944   ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
 945    (abfd, sec, rel, h, sym, addendp))
 946 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
 947   ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
 948    (obfd, info, ibfd, sec, rel, adjustedp))
 949 #define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
 950                                      value, string, cp, coll, hashp)\
 951   ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 952    (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 953
 954 #define bfd_coff_link_output_has_begun(a,p) \
 955   ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
 956 #define bfd_coff_final_link_postscript(a,p) \
 957   ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
 958
 959 #define bfd_coff_have_print_pdata(a) \
 960   (coff_backend_info (a)->_bfd_coff_print_pdata)
 961 #define bfd_coff_print_pdata(a,p) \
 962   ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
 963
 964 /* Macro: Returns true if the bfd is a PE executable as opposed to a
 965    PE object file.  */
 966 #define bfd_pei_p(abfd) \
 967   (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))