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