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 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   7    2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
   8    Free Software Foundation, Inc.
   9    Written by Cygnus Support.
  10
  11    This file is part of BFD, the Binary File Descriptor library.
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 3 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  26    MA 02110-1301, USA.  */
  27
  28 #include "bfdlink.h"
  29
  30 /* Object file tdata; access macros.  */
  31
  32 #define coff_data(bfd)                ((bfd)->tdata.coff_obj_data)
  33 #define exec_hdr(bfd)                 (coff_data (bfd)->hdr)
  34 #define obj_pe(bfd)                   (coff_data (bfd)->pe)
  35 #define obj_symbols(bfd)              (coff_data (bfd)->symbols)
  36 #define obj_sym_filepos(bfd)          (coff_data (bfd)->sym_filepos)
  37 #define obj_relocbase(bfd)            (coff_data (bfd)->relocbase)
  38 #define obj_raw_syments(bfd)          (coff_data (bfd)->raw_syments)
  39 #define obj_raw_syment_count(bfd)     (coff_data (bfd)->raw_syment_count)
  40 #define obj_convert(bfd)              (coff_data (bfd)->conversion_table)
  41 #define obj_conv_table_size(bfd)      (coff_data (bfd)->conv_table_size)
  42 #define obj_coff_external_syms(bfd)   (coff_data (bfd)->external_syms)
  43 #define obj_coff_keep_syms(bfd)       (coff_data (bfd)->keep_syms)
  44 #define obj_coff_strings(bfd)         (coff_data (bfd)->strings)
  45 #define obj_coff_keep_strings(bfd)    (coff_data (bfd)->keep_strings)
  46 #define obj_coff_sym_hashes(bfd)      (coff_data (bfd)->sym_hashes)
  47 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  48 #define obj_coff_local_toc_table(bfd) (coff_data (bfd)->local_toc_sym_map)
  49
  50 /* `Tdata' information kept for COFF files.  */
  51
  52 typedef struct coff_tdata
  53 {
  54   struct coff_symbol_struct *symbols;   /* Symtab for input bfd.  */
  55   unsigned int *conversion_table;
  56   int conv_table_size;
  57   file_ptr sym_filepos;
  58
  59   struct coff_ptr_struct *raw_syments;
  60   unsigned long raw_syment_count;
  61
  62   /* These are only valid once writing has begun.  */
  63   long int relocbase;
  64
  65   /* These members communicate important constants about the symbol table
  66      to GDB's symbol-reading code.  These `constants' unfortunately vary
  67      from coff implementation to implementation...  */
  68   unsigned local_n_btmask;
  69   unsigned local_n_btshft;
  70   unsigned local_n_tmask;
  71   unsigned local_n_tshift;
  72   unsigned local_symesz;
  73   unsigned local_auxesz;
  74   unsigned local_linesz;
  75
  76   /* The unswapped external symbols.  May be NULL.  Read by
  77      _bfd_coff_get_external_symbols.  */
  78   void * external_syms;
  79   /* If this is TRUE, the external_syms may not be freed.  */
  80   bfd_boolean keep_syms;
  81
  82   /* The string table.  May be NULL.  Read by
  83      _bfd_coff_read_string_table.  */
  84   char *strings;
  85   /* If this is TRUE, the strings may not be freed.  */
  86   bfd_boolean keep_strings;
  87   /* If this is TRUE, the strings have been written out already.  */
  88   bfd_boolean strings_written;
  89
  90   /* Is this a PE format coff file?  */
  91   int pe;
  92   /* Used by the COFF backend linker.  */
  93   struct coff_link_hash_entry **sym_hashes;
  94
  95   /* Used by the pe linker for PowerPC.  */
  96   int *local_toc_sym_map;
  97
  98   struct bfd_link_info *link_info;
  99
 100   /* Used by coff_find_nearest_line.  */
 101   void * line_info;
 102
 103   /* A place to stash dwarf2 info for this bfd.  */
 104   void * dwarf2_find_line_info;
 105
 106   /* The timestamp from the COFF file header.  */
 107   long timestamp;
 108
 109   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 110      used by ARM code.  */
 111   flagword flags;
 112
 113   /* coff-stgo32 EXE stub header after BFD tdata has been allocated.  Its data
 114      is kept in internal_filehdr.go32stub beforehand.  */
 115   char *go32stub;
 116 } coff_data_type;
 117
 118 /* Tdata for pe image files.  */
 119 typedef struct pe_tdata
 120 {
 121   coff_data_type coff;
 122   struct internal_extra_pe_aouthdr pe_opthdr;
 123   int dll;
 124   int has_reloc_section;
 125   int dont_strip_reloc;
 126   bfd_boolean (*in_reloc_p) (bfd *, reloc_howto_type *);
 127   flagword real_flags;
 128 } pe_data_type;
 129
 130 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 131
 132 /* Tdata for XCOFF files.  */
 133
 134 struct xcoff_tdata
 135 {
 136   /* Basic COFF information.  */
 137   coff_data_type coff;
 138
 139   /* TRUE if this is an XCOFF64 file. */
 140   bfd_boolean xcoff64;
 141
 142   /* TRUE if a large a.out header should be generated.  */
 143   bfd_boolean full_aouthdr;
 144
 145   /* TOC value.  */
 146   bfd_vma toc;
 147
 148   /* Index of section holding TOC.  */
 149   int sntoc;
 150
 151   /* Index of section holding entry point.  */
 152   int snentry;
 153
 154   /* .text alignment from optional header.  */
 155   int text_align_power;
 156
 157   /* .data alignment from optional header.  */
 158   int data_align_power;
 159
 160   /* modtype from optional header.  */
 161   short modtype;
 162
 163   /* cputype from optional header.  */
 164   short cputype;
 165
 166   /* maxdata from optional header.  */
 167   bfd_vma maxdata;
 168
 169   /* maxstack from optional header.  */
 170   bfd_vma maxstack;
 171
 172   /* Used by the XCOFF backend linker.  */
 173   asection **csects;
 174   long *debug_indices;
 175   unsigned int *lineno_counts;
 176   unsigned int import_file_id;
 177 };
 178
 179 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 180
 181 /* We take the address of the first element of an asymbol to ensure that the
 182    macro is only ever applied to an asymbol.  */
 183 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 184
 185 /* The used_by_bfd field of a section may be set to a pointer to this
 186    structure.  */
 187
 188 struct coff_section_tdata
 189 {
 190   /* The relocs, swapped into COFF internal form.  This may be NULL.  */
 191   struct internal_reloc *relocs;
 192   /* If this is TRUE, the relocs entry may not be freed.  */
 193   bfd_boolean keep_relocs;
 194   /* The section contents.  This may be NULL.  */
 195   bfd_byte *contents;
 196   /* If this is TRUE, the contents entry may not be freed.  */
 197   bfd_boolean keep_contents;
 198   /* Information cached by coff_find_nearest_line.  */
 199   bfd_vma offset;
 200   unsigned int i;
 201   const char *function;
 202   /* Optional information about a COMDAT entry; NULL if not COMDAT. */
 203   struct coff_comdat_info *comdat;
 204   int line_base;
 205   /* A pointer used for .stab linking optimizations.  */
 206   void * stab_info;
 207   /* Available for individual backends.  */
 208   void * tdata;
 209 };
 210
 211 /* An accessor macro for the coff_section_tdata structure.  */
 212 #define coff_section_data(abfd, sec) \
 213   ((struct coff_section_tdata *) (sec)->used_by_bfd)
 214
 215 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 216
 217 struct xcoff_section_tdata
 218 {
 219   /* Used for XCOFF csects created by the linker; points to the real
 220      XCOFF section which contains this csect.  */
 221   asection *enclosing;
 222   /* The lineno_count field for the enclosing section, because we are
 223      going to clobber it there.  */
 224   unsigned int lineno_count;
 225   /* The first and last symbol indices for symbols used by this csect.  */
 226   unsigned long first_symndx;
 227   unsigned long last_symndx;
 228 };
 229
 230 /* An accessor macro the xcoff_section_tdata structure.  */
 231 #define xcoff_section_data(abfd, sec) \
 232   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 233
 234 /* Tdata for sections in PE files.  */
 235
 236 struct pei_section_tdata
 237 {
 238   /* The virtual size of the section.  */
 239   bfd_size_type virt_size;
 240   /* The PE section flags.  */
 241   long pe_flags;
 242 };
 243
 244 /* An accessor macro for the pei_section_tdata structure.  */
 245 #define pei_section_data(abfd, sec) \
 246   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 247
 248 /* COFF linker hash table entries.  */
 249
 250 struct coff_link_hash_entry
 251 {
 252   struct bfd_link_hash_entry root;
 253
 254   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 255      there is a reloc against this symbol.  */
 256   long indx;
 257
 258   /* Symbol type.  */
 259   unsigned short type;
 260
 261   /* Symbol class.  */
 262   unsigned char symbol_class;
 263
 264   /* Number of auxiliary entries.  */
 265   char numaux;
 266
 267   /* BFD to take auxiliary entries from.  */
 268   bfd *auxbfd;
 269
 270   /* Pointer to array of auxiliary entries, if any.  */
 271   union internal_auxent *aux;
 272
 273   /* Flag word; legal values follow.  */
 274   unsigned short coff_link_hash_flags;
 275   /* Symbol is a PE section symbol.  */
 276 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 277 };
 278
 279 /* COFF linker hash table.  */
 280
 281 struct coff_link_hash_table
 282 {
 283   struct bfd_link_hash_table root;
 284   /* A pointer to information used to link stabs in sections.  */
 285   struct stab_info stab_info;
 286 };
 287
 288 /* Look up an entry in a COFF linker hash table.  */
 289
 290 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 291   ((struct coff_link_hash_entry *)                                      \
 292    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 293                          (copy), (follow)))
 294
 295 /* Traverse a COFF linker hash table.  */
 296
 297 #define coff_link_hash_traverse(table, func, info)                      \
 298   (bfd_link_hash_traverse                                               \
 299    (&(table)->root,                                                     \
 300     (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
 301     (info)))
 302
 303 /* Get the COFF linker hash table from a link_info structure.  */
 304
 305 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 306
 307 /* Functions in coffgen.c.  */
 308 extern const bfd_target *coff_object_p
 309   (bfd *);
 310 extern struct bfd_section *coff_section_from_bfd_index
 311   (bfd *, int);
 312 extern long coff_get_symtab_upper_bound
 313   (bfd *);
 314 extern long coff_canonicalize_symtab
 315   (bfd *, asymbol **);
 316 extern int coff_count_linenumbers
 317   (bfd *);
 318 extern struct coff_symbol_struct *coff_symbol_from
 319   (bfd *, asymbol *);
 320 extern bfd_boolean coff_renumber_symbols
 321   (bfd *, int *);
 322 extern void coff_mangle_symbols
 323   (bfd *);
 324 extern bfd_boolean coff_write_symbols
 325   (bfd *);
 326 extern bfd_boolean coff_write_linenumbers
 327   (bfd *);
 328 extern alent *coff_get_lineno
 329   (bfd *, asymbol *);
 330 extern asymbol *coff_section_symbol
 331   (bfd *, char *);
 332 extern bfd_boolean _bfd_coff_get_external_symbols
 333   (bfd *);
 334 extern const char *_bfd_coff_read_string_table
 335   (bfd *);
 336 extern bfd_boolean _bfd_coff_free_symbols
 337   (bfd *);
 338 extern struct coff_ptr_struct *coff_get_normalized_symtab
 339   (bfd *);
 340 extern long coff_get_reloc_upper_bound
 341   (bfd *, sec_ptr);
 342 extern asymbol *coff_make_empty_symbol
 343   (bfd *);
 344 extern void coff_print_symbol
 345   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 346 extern void coff_get_symbol_info
 347   (bfd *, asymbol *, symbol_info *ret);
 348 extern bfd_boolean _bfd_coff_is_local_label_name
 349   (bfd *, const char *);
 350 extern asymbol *coff_bfd_make_debug_symbol
 351   (bfd *, void *, unsigned long);
 352 extern bfd_boolean coff_find_nearest_line
 353   (bfd *, asection *, asymbol **, bfd_vma, const char **,
 354    const char **, unsigned int *);
 355 extern bfd_boolean coff_find_inliner_info
 356   (bfd *, const char **, const char **, unsigned int *);
 357 extern int coff_sizeof_headers
 358   (bfd *, struct bfd_link_info *);
 359 extern bfd_boolean bfd_coff_reloc16_relax_section
 360   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 361 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 362   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 363    bfd_byte *, bfd_boolean, asymbol **);
 364 extern bfd_vma bfd_coff_reloc16_get_value
 365   (arelent *, struct bfd_link_info *, asection *);
 366 extern void bfd_perform_slip
 367   (bfd *, unsigned int, asection *, bfd_vma);
 368
 369 /* Functions and types in cofflink.c.  */
 370
 371 #define STRING_SIZE_SIZE 4
 372
 373 /* We use a hash table to merge identical enum, struct, and union
 374    definitions in the linker.  */
 375
 376 /* Information we keep for a single element (an enum value, a
 377    structure or union field) in the debug merge hash table.  */
 378
 379 struct coff_debug_merge_element
 380 {
 381   /* Next element.  */
 382   struct coff_debug_merge_element *next;
 383
 384   /* Name.  */
 385   const char *name;
 386
 387   /* Type.  */
 388   unsigned int type;
 389
 390   /* Symbol index for complex type.  */
 391   long tagndx;
 392 };
 393
 394 /* A linked list of debug merge entries for a given name.  */
 395
 396 struct coff_debug_merge_type
 397 {
 398   /* Next type with the same name.  */
 399   struct coff_debug_merge_type *next;
 400
 401   /* Class of type.  */
 402   int type_class;
 403
 404   /* Symbol index where this type is defined.  */
 405   long indx;
 406
 407   /* List of elements.  */
 408   struct coff_debug_merge_element *elements;
 409 };
 410
 411 /* Information we store in the debug merge hash table.  */
 412
 413 struct coff_debug_merge_hash_entry
 414 {
 415   struct bfd_hash_entry root;
 416
 417   /* A list of types with this name.  */
 418   struct coff_debug_merge_type *types;
 419 };
 420
 421 /* The debug merge hash table.  */
 422
 423 struct coff_debug_merge_hash_table
 424 {
 425   struct bfd_hash_table root;
 426 };
 427
 428 /* Initialize a COFF debug merge hash table.  */
 429
 430 #define coff_debug_merge_hash_table_init(table) \
 431   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc, \
 432                         sizeof (struct coff_debug_merge_hash_entry)))
 433
 434 /* Free a COFF debug merge hash table.  */
 435
 436 #define coff_debug_merge_hash_table_free(table) \
 437   (bfd_hash_table_free (&(table)->root))
 438
 439 /* Look up an entry in a COFF debug merge hash table.  */
 440
 441 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 442   ((struct coff_debug_merge_hash_entry *) \
 443    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 444
 445 /* Information we keep for each section in the output file when doing
 446    a relocatable link.  */
 447
 448 struct coff_link_section_info
 449 {
 450   /* The relocs to be output.  */
 451   struct internal_reloc *relocs;
 452   /* For each reloc against a global symbol whose index was not known
 453      when the reloc was handled, the global hash table entry.  */
 454   struct coff_link_hash_entry **rel_hashes;
 455 };
 456
 457 /* Information that we pass around while doing the final link step.  */
 458
 459 struct coff_final_link_info
 460 {
 461   /* General link information.  */
 462   struct bfd_link_info *info;
 463   /* Output BFD.  */
 464   bfd *output_bfd;
 465   /* Used to indicate failure in traversal routine.  */
 466   bfd_boolean failed;
 467   /* If doing "task linking" set only during the time when we want the
 468      global symbol writer to convert the storage class of defined global
 469      symbols from global to static. */
 470   bfd_boolean global_to_static;
 471   /* Hash table for long symbol names.  */
 472   struct bfd_strtab_hash *strtab;
 473   /* When doing a relocatable link, an array of information kept for
 474      each output section, indexed by the target_index field.  */
 475   struct coff_link_section_info *section_info;
 476   /* Symbol index of last C_FILE symbol (-1 if none).  */
 477   long last_file_index;
 478   /* Contents of last C_FILE symbol.  */
 479   struct internal_syment last_file;
 480   /* Symbol index of first aux entry of last .bf symbol with an empty
 481      endndx field (-1 if none).  */
 482   long last_bf_index;
 483   /* Contents of last_bf_index aux entry.  */
 484   union internal_auxent last_bf;
 485   /* Hash table used to merge debug information.  */
 486   struct coff_debug_merge_hash_table debug_merge;
 487   /* Buffer large enough to hold swapped symbols of any input file.  */
 488   struct internal_syment *internal_syms;
 489   /* Buffer large enough to hold sections of symbols of any input file.  */
 490   asection **sec_ptrs;
 491   /* Buffer large enough to hold output indices of symbols of any
 492      input file.  */
 493   long *sym_indices;
 494   /* Buffer large enough to hold output symbols for any input file.  */
 495   bfd_byte *outsyms;
 496   /* Buffer large enough to hold external line numbers for any input
 497      section.  */
 498   bfd_byte *linenos;
 499   /* Buffer large enough to hold any input section.  */
 500   bfd_byte *contents;
 501   /* Buffer large enough to hold external relocs of any input section.  */
 502   bfd_byte *external_relocs;
 503   /* Buffer large enough to hold swapped relocs of any input section.  */
 504   struct internal_reloc *internal_relocs;
 505 };
 506
 507 /* Most COFF variants have no way to record the alignment of a
 508    section.  This struct is used to set a specific alignment based on
 509    the name of the section.  */
 510
 511 struct coff_section_alignment_entry
 512 {
 513   /* The section name.  */
 514   const char *name;
 515
 516   /* This is either (unsigned int) -1, indicating that the section
 517      name must match exactly, or it is the number of letters which
 518      must match at the start of the name.  */
 519   unsigned int comparison_length;
 520
 521   /* These macros may be used to fill in the first two fields in a
 522      structure initialization.  */
 523 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 524 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 525
 526   /* Only use this entry if the default section alignment for this
 527      target is at least that much (as a power of two).  If this field
 528      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 529   unsigned int default_alignment_min;
 530
 531   /* Only use this entry if the default section alignment for this
 532      target is no greater than this (as a power of two).  If this
 533      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 534   unsigned int default_alignment_max;
 535
 536 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 537
 538   /* The desired alignment for this section (as a power of two).  */
 539   unsigned int alignment_power;
 540 };
 541
 542 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 543   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 544 extern bfd_boolean _bfd_coff_link_hash_table_init
 545   (struct coff_link_hash_table *, bfd *,
 546    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 547                                struct bfd_hash_table *,
 548                                const char *),
 549    unsigned int);
 550 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 551   (bfd *);
 552 extern const char *_bfd_coff_internal_syment_name
 553   (bfd *, const struct internal_syment *, char *);
 554 extern bfd_boolean _bfd_coff_link_add_symbols
 555   (bfd *, struct bfd_link_info *);
 556 extern bfd_boolean _bfd_coff_final_link
 557   (bfd *, struct bfd_link_info *);
 558 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 559   (bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
 560    struct internal_reloc *);
 561 extern bfd_boolean _bfd_coff_generic_relocate_section
 562   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 563    struct internal_reloc *, struct internal_syment *, asection **);
 564 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 565   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 566 extern bfd_boolean _bfd_coff_write_global_sym
 567   (struct coff_link_hash_entry *, void *);
 568 extern bfd_boolean _bfd_coff_write_task_globals
 569   (struct coff_link_hash_entry *, void *);
 570 extern bfd_boolean _bfd_coff_link_input_bfd
 571   (struct coff_final_link_info *, bfd *);
 572 extern bfd_boolean _bfd_coff_reloc_link_order
 573   (bfd *, struct coff_final_link_info *, asection *,
 574    struct bfd_link_order *);
 575
 576
 577 #define coff_get_section_contents_in_window \
 578   _bfd_generic_get_section_contents_in_window
 579
 580 /* Functions in xcofflink.c.  */
 581
 582 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 583   (bfd *);
 584 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 585   (bfd *, asymbol **);
 586 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 587   (bfd *);
 588 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 589   (bfd *, arelent **, asymbol **);
 590 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 591   (bfd *);
 592 extern void _bfd_xcoff_bfd_link_hash_table_free
 593   (struct bfd_link_hash_table *);
 594 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 595   (bfd *, struct bfd_link_info *);
 596 extern bfd_boolean _bfd_xcoff_bfd_final_link
 597   (bfd *, struct bfd_link_info *);
 598 extern bfd_boolean _bfd_xcoff_define_common_symbol
 599   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 600 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 601   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 602    struct internal_reloc *, struct internal_syment *, asection **);
 603
 604 /* Functions in coff-ppc.c.  FIXME: These are called by pe.em in the
 605    linker, and so should start with bfd and be declared in bfd.h.  */
 606
 607 extern bfd_boolean ppc_allocate_toc_section
 608   (struct bfd_link_info *);
 609 extern bfd_boolean ppc_process_before_allocation
 610   (bfd *, struct bfd_link_info *);
 611 /* Extracted from coffcode.h.  */
 612 typedef struct coff_ptr_struct
 613 {
 614   /* Remembers the offset from the first symbol in the file for
 615      this symbol. Generated by coff_renumber_symbols. */
 616   unsigned int offset;
 617
 618   /* Should the value of this symbol be renumbered.  Used for
 619      XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 620   unsigned int fix_value : 1;
 621
 622   /* Should the tag field of this symbol be renumbered.
 623      Created by coff_pointerize_aux. */
 624   unsigned int fix_tag : 1;
 625
 626   /* Should the endidx field of this symbol be renumbered.
 627      Created by coff_pointerize_aux. */
 628   unsigned int fix_end : 1;
 629
 630   /* Should the x_csect.x_scnlen field be renumbered.
 631      Created by coff_pointerize_aux. */
 632   unsigned int fix_scnlen : 1;
 633
 634   /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 635      index into the line number entries.  Set by coff_slurp_symbol_table.  */
 636   unsigned int fix_line : 1;
 637
 638   /* The container for the symbol structure as read and translated
 639      from the file. */
 640   union
 641   {
 642     union internal_auxent auxent;
 643     struct internal_syment syment;
 644   } u;
 645 } combined_entry_type;
 646
 647
 648 /* Each canonical asymbol really looks like this: */
 649
 650 typedef struct coff_symbol_struct
 651 {
 652   /* The actual symbol which the rest of BFD works with */
 653   asymbol symbol;
 654
 655   /* A pointer to the hidden information for this symbol */
 656   combined_entry_type *native;
 657
 658   /* A pointer to the linenumber information for this symbol */
 659   struct lineno_cache_entry *lineno;
 660
 661   /* Have the line numbers been relocated yet ? */
 662   bfd_boolean done_lineno;
 663 } coff_symbol_type;
 664 /* COFF symbol classifications.  */
 665
 666 enum coff_symbol_classification
 667 {
 668   /* Global symbol.  */
 669   COFF_SYMBOL_GLOBAL,
 670   /* Common symbol.  */
 671   COFF_SYMBOL_COMMON,
 672   /* Undefined symbol.  */
 673   COFF_SYMBOL_UNDEFINED,
 674   /* Local symbol.  */
 675   COFF_SYMBOL_LOCAL,
 676   /* PE section symbol.  */
 677   COFF_SYMBOL_PE_SECTION
 678 };
 679
 680 typedef struct
 681 {
 682   void (*_bfd_coff_swap_aux_in)
 683     (bfd *, void *, int, int, int, int, void *);
 684
 685   void (*_bfd_coff_swap_sym_in)
 686     (bfd *, void *, void *);
 687
 688   void (*_bfd_coff_swap_lineno_in)
 689     (bfd *, void *, void *);
 690
 691   unsigned int (*_bfd_coff_swap_aux_out)
 692     (bfd *, void *, int, int, int, int, void *);
 693
 694   unsigned int (*_bfd_coff_swap_sym_out)
 695     (bfd *, void *, void *);
 696
 697   unsigned int (*_bfd_coff_swap_lineno_out)
 698     (bfd *, void *, void *);
 699
 700   unsigned int (*_bfd_coff_swap_reloc_out)
 701     (bfd *, void *, void *);
 702
 703   unsigned int (*_bfd_coff_swap_filehdr_out)
 704     (bfd *, void *, void *);
 705
 706   unsigned int (*_bfd_coff_swap_aouthdr_out)
 707     (bfd *, void *, void *);
 708
 709   unsigned int (*_bfd_coff_swap_scnhdr_out)
 710     (bfd *, void *, void *);
 711
 712   unsigned int _bfd_filhsz;
 713   unsigned int _bfd_aoutsz;
 714   unsigned int _bfd_scnhsz;
 715   unsigned int _bfd_symesz;
 716   unsigned int _bfd_auxesz;
 717   unsigned int _bfd_relsz;
 718   unsigned int _bfd_linesz;
 719   unsigned int _bfd_filnmlen;
 720   bfd_boolean _bfd_coff_long_filenames;
 721
 722   bfd_boolean _bfd_coff_long_section_names;
 723   bfd_boolean (*_bfd_coff_set_long_section_names)
 724     (bfd *, int);
 725
 726   unsigned int _bfd_coff_default_section_alignment_power;
 727   bfd_boolean _bfd_coff_force_symnames_in_strings;
 728   unsigned int _bfd_coff_debug_string_prefix_length;
 729
 730   void (*_bfd_coff_swap_filehdr_in)
 731     (bfd *, void *, void *);
 732
 733   void (*_bfd_coff_swap_aouthdr_in)
 734     (bfd *, void *, void *);
 735
 736   void (*_bfd_coff_swap_scnhdr_in)
 737     (bfd *, void *, void *);
 738
 739   void (*_bfd_coff_swap_reloc_in)
 740     (bfd *abfd, void *, void *);
 741
 742   bfd_boolean (*_bfd_coff_bad_format_hook)
 743     (bfd *, void *);
 744
 745   bfd_boolean (*_bfd_coff_set_arch_mach_hook)
 746     (bfd *, void *);
 747
 748   void * (*_bfd_coff_mkobject_hook)
 749     (bfd *, void *, void *);
 750
 751   bfd_boolean (*_bfd_styp_to_sec_flags_hook)
 752     (bfd *, void *, const char *, asection *, flagword *);
 753
 754   void (*_bfd_set_alignment_hook)
 755     (bfd *, asection *, void *);
 756
 757   bfd_boolean (*_bfd_coff_slurp_symbol_table)
 758     (bfd *);
 759
 760   bfd_boolean (*_bfd_coff_symname_in_debug)
 761     (bfd *, struct internal_syment *);
 762
 763   bfd_boolean (*_bfd_coff_pointerize_aux_hook)
 764     (bfd *, combined_entry_type *, combined_entry_type *,
 765             unsigned int, combined_entry_type *);
 766
 767   bfd_boolean (*_bfd_coff_print_aux)
 768     (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 769             combined_entry_type *, unsigned int);
 770
 771   void (*_bfd_coff_reloc16_extra_cases)
 772     (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 773            bfd_byte *, unsigned int *, unsigned int *);
 774
 775   int (*_bfd_coff_reloc16_estimate)
 776     (bfd *, asection *, arelent *, unsigned int,
 777             struct bfd_link_info *);
 778
 779   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 780     (bfd *, struct internal_syment *);
 781
 782   bfd_boolean (*_bfd_coff_compute_section_file_positions)
 783     (bfd *);
 784
 785   bfd_boolean (*_bfd_coff_start_final_link)
 786     (bfd *, struct bfd_link_info *);
 787
 788   bfd_boolean (*_bfd_coff_relocate_section)
 789     (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 790             struct internal_reloc *, struct internal_syment *, asection **);
 791
 792   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 793     (bfd *, asection *, struct internal_reloc *,
 794             struct coff_link_hash_entry *, struct internal_syment *,
 795             bfd_vma *);
 796
 797   bfd_boolean (*_bfd_coff_adjust_symndx)
 798     (bfd *, struct bfd_link_info *, bfd *, asection *,
 799             struct internal_reloc *, bfd_boolean *);
 800
 801   bfd_boolean (*_bfd_coff_link_add_one_symbol)
 802     (struct bfd_link_info *, bfd *, const char *, flagword,
 803             asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
 804             struct bfd_link_hash_entry **);
 805
 806   bfd_boolean (*_bfd_coff_link_output_has_begun)
 807     (bfd *, struct coff_final_link_info *);
 808
 809   bfd_boolean (*_bfd_coff_final_link_postscript)
 810     (bfd *, struct coff_final_link_info *);
 811
 812   bfd_boolean (*_bfd_coff_print_pdata)
 813     (bfd *, void *);
 814
 815 } bfd_coff_backend_data;
 816
 817 #define coff_backend_info(abfd) \
 818   ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 819
 820 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 821   ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 822
 823 #define bfd_coff_swap_sym_in(a,e,i) \
 824   ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 825
 826 #define bfd_coff_swap_lineno_in(a,e,i) \
 827   ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 828
 829 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 830   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 831
 832 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 833   ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 834
 835 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 836   ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 837
 838 #define bfd_coff_swap_sym_out(abfd, i,o) \
 839   ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 840
 841 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 842   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 843
 844 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 845   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 846
 847 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 848   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 849
 850 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 851 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 852 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 853 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 854 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 855 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 856 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 857 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 858 #define bfd_coff_long_filenames(abfd) \
 859   (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 860 #define bfd_coff_long_section_names(abfd) \
 861   (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 862 #define bfd_coff_set_long_section_names(abfd, enable) \
 863   ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
 864 #define bfd_coff_default_section_alignment_power(abfd) \
 865   (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 866 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 867   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 868
 869 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 870   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 871
 872 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 873   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 874
 875 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 876   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 877
 878 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 879   ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 880
 881 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 882   ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 883 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 884   ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
 885    (abfd, filehdr, aouthdr))
 886
 887 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
 888   ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 889    (abfd, scnhdr, name, section, flags_ptr))
 890
 891 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 892   ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 893
 894 #define bfd_coff_slurp_symbol_table(abfd)\
 895   ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 896
 897 #define bfd_coff_symname_in_debug(abfd, sym)\
 898   ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 899
 900 #define bfd_coff_force_symnames_in_strings(abfd)\
 901   (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 902
 903 #define bfd_coff_debug_string_prefix_length(abfd)\
 904   (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 905
 906 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 907   ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 908    (abfd, file, base, symbol, aux, indaux))
 909
 910 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
 911                                      reloc, data, src_ptr, dst_ptr)\
 912   ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 913    (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 914
 915 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 916   ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 917    (abfd, section, reloc, shrink, link_info))
 918
 919 #define bfd_coff_classify_symbol(abfd, sym)\
 920   ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 921    (abfd, sym))
 922
 923 #define bfd_coff_compute_section_file_positions(abfd)\
 924   ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 925    (abfd))
 926
 927 #define bfd_coff_start_final_link(obfd, info)\
 928   ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 929    (obfd, info))
 930 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
 931   ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
 932    (obfd, info, ibfd, o, con, rel, isyms, secs))
 933 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
 934   ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
 935    (abfd, sec, rel, h, sym, addendp))
 936 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
 937   ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
 938    (obfd, info, ibfd, sec, rel, adjustedp))
 939 #define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
 940                                      value, string, cp, coll, hashp)\
 941   ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 942    (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 943
 944 #define bfd_coff_link_output_has_begun(a,p) \
 945   ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
 946 #define bfd_coff_final_link_postscript(a,p) \
 947   ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
 948
 949 #define bfd_coff_have_print_pdata(a) \
 950   (coff_backend_info (a)->_bfd_coff_print_pdata)
 951 #define bfd_coff_print_pdata(a,p) \
 952   ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
 953
 954 /* Macro: Returns true if the bfd is a PE executable as opposed to a
 955    PE object file.  */
 956 #define bfd_pei_p(abfd) \
 957   (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))