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
   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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  26
  27 #include "bfdlink.h"
  28
  29 /* Object file tdata; access macros */
  30
  31 #define coff_data(bfd)          ((bfd)->tdata.coff_obj_data)
  32 #define exec_hdr(bfd)           (coff_data(bfd)->hdr)
  33 #define obj_pe(bfd)             (coff_data(bfd)->pe)
  34 #define obj_symbols(bfd)        (coff_data(bfd)->symbols)
  35 #define obj_sym_filepos(bfd)    (coff_data(bfd)->sym_filepos)
  36
  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
  43 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
  44 #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
  45 #define obj_coff_strings(bfd)   (coff_data (bfd)->strings)
  46 #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
  47 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
  48 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  49
  50 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
  51
  52 /* `Tdata' information kept for COFF files.  */
  53
  54 typedef struct coff_tdata
  55 {
  56   struct   coff_symbol_struct *symbols; /* symtab for input bfd */
  57   unsigned int *conversion_table;
  58   int conv_table_size;
  59   file_ptr sym_filepos;
  60
  61   struct coff_ptr_struct *raw_syments;
  62   unsigned long raw_syment_count;
  63
  64   /* These are only valid once writing has begun */
  65   long int relocbase;
  66
  67   /* These members communicate important constants about the symbol table
  68      to GDB's symbol-reading code.  These `constants' unfortunately vary
  69      from coff implementation to implementation...  */
  70   unsigned local_n_btmask;
  71   unsigned local_n_btshft;
  72   unsigned local_n_tmask;
  73   unsigned local_n_tshift;
  74   unsigned local_symesz;
  75   unsigned local_auxesz;
  76   unsigned local_linesz;
  77
  78   /* The unswapped external symbols.  May be NULL.  Read by
  79      _bfd_coff_get_external_symbols.  */
  80   PTR external_syms;
  81   /* If this is TRUE, the external_syms may not be freed.  */
  82   bfd_boolean keep_syms;
  83
  84   /* The string table.  May be NULL.  Read by
  85      _bfd_coff_read_string_table.  */
  86   char *strings;
  87   /* If this is TRUE, the strings may not be freed.  */
  88   bfd_boolean keep_strings;
  89   /* If this is TRUE, the strings have been written out already.  */
  90   bfd_boolean strings_written;
  91
  92   /* is this a PE format coff file */
  93   int pe;
  94   /* Used by the COFF backend linker.  */
  95   struct coff_link_hash_entry **sym_hashes;
  96
  97   /* used by the pe linker for PowerPC */
  98   int *local_toc_sym_map;
  99
 100   struct bfd_link_info *link_info;
 101
 102   /* Used by coff_find_nearest_line.  */
 103   PTR line_info;
 104
 105   /* A place to stash dwarf2 info for this bfd. */
 106   PTR dwarf2_find_line_info;
 107
 108   /* The timestamp from the COFF file header.  */
 109   long timestamp;
 110
 111   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 112      used by ARM code.  */
 113   flagword flags;
 114
 115 } coff_data_type;
 116
 117 /* Tdata for pe image files. */
 118 typedef struct pe_tdata
 119 {
 120   coff_data_type coff;
 121   struct internal_extra_pe_aouthdr pe_opthdr;
 122   int dll;
 123   int has_reloc_section;
 124   bfd_boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
 125   flagword real_flags;
 126   int target_subsystem;
 127   bfd_boolean force_minimum_alignment;
 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   unsigned long *debug_indices;
 175   unsigned int import_file_id;
 176 };
 177
 178 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 179
 180 /* We take the address of the first element of an asymbol to ensure that the
 181  * macro is only ever applied to an asymbol.  */
 182 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 183
 184 /* The used_by_bfd field of a section may be set to a pointer to this
 185    structure.  */
 186
 187 struct coff_section_tdata
 188 {
 189   /* The relocs, swapped into COFF internal form.  This may be NULL.  */
 190   struct internal_reloc *relocs;
 191   /* If this is TRUE, the relocs entry may not be freed.  */
 192   bfd_boolean keep_relocs;
 193   /* The section contents.  This may be NULL.  */
 194   bfd_byte *contents;
 195   /* If this is TRUE, the contents entry may not be freed.  */
 196   bfd_boolean keep_contents;
 197   /* Information cached by coff_find_nearest_line.  */
 198   bfd_vma offset;
 199   unsigned int i;
 200   const char *function;
 201   /* Optional information about a COMDAT entry; NULL if not COMDAT. */
 202   struct coff_comdat_info *comdat;
 203   int line_base;
 204   /* A pointer used for .stab linking optimizations.  */
 205   PTR stab_info;
 206   /* Available for individual backends.  */
 207   PTR tdata;
 208 };
 209
 210 /* An accessor macro for the coff_section_tdata structure.  */
 211 #define coff_section_data(abfd, sec) \
 212   ((struct coff_section_tdata *) (sec)->used_by_bfd)
 213
 214 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 215
 216 struct xcoff_section_tdata
 217 {
 218   /* Used for XCOFF csects created by the linker; points to the real
 219      XCOFF section which contains this csect.  */
 220   asection *enclosing;
 221   /* The lineno_count field for the enclosing section, because we are
 222      going to clobber it there.  */
 223   unsigned int lineno_count;
 224   /* The first and one past the last symbol indices for symbols used
 225      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 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 (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (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   PARAMS ((bfd *));
 310 extern struct bfd_section *coff_section_from_bfd_index
 311   PARAMS ((bfd *, int));
 312 extern long coff_get_symtab_upper_bound
 313   PARAMS ((bfd *));
 314 extern long coff_canonicalize_symtab
 315   PARAMS ((bfd *, asymbol **));
 316 extern int coff_count_linenumbers
 317   PARAMS ((bfd *));
 318 extern struct coff_symbol_struct *coff_symbol_from
 319   PARAMS ((bfd *, asymbol *));
 320 extern bfd_boolean coff_renumber_symbols
 321   PARAMS ((bfd *, int *));
 322 extern void coff_mangle_symbols
 323   PARAMS ((bfd *));
 324 extern bfd_boolean coff_write_symbols
 325   PARAMS ((bfd *));
 326 extern bfd_boolean coff_write_linenumbers
 327   PARAMS ((bfd *));
 328 extern alent *coff_get_lineno
 329   PARAMS ((bfd *, asymbol *));
 330 extern asymbol *coff_section_symbol
 331   PARAMS ((bfd *, char *));
 332 extern bfd_boolean _bfd_coff_get_external_symbols
 333   PARAMS ((bfd *));
 334 extern const char *_bfd_coff_read_string_table
 335   PARAMS ((bfd *));
 336 extern bfd_boolean _bfd_coff_free_symbols
 337   PARAMS ((bfd *));
 338 extern struct coff_ptr_struct *coff_get_normalized_symtab
 339   PARAMS ((bfd *));
 340 extern long coff_get_reloc_upper_bound
 341   PARAMS ((bfd *, sec_ptr));
 342 extern asymbol *coff_make_empty_symbol
 343   PARAMS ((bfd *));
 344 extern void coff_print_symbol
 345   PARAMS ((bfd *, PTR filep, asymbol *, bfd_print_symbol_type));
 346 extern void coff_get_symbol_info
 347   PARAMS ((bfd *, asymbol *, symbol_info *ret));
 348 extern bfd_boolean _bfd_coff_is_local_label_name
 349   PARAMS ((bfd *, const char *));
 350 extern asymbol *coff_bfd_make_debug_symbol
 351   PARAMS ((bfd *, PTR, unsigned long));
 352 extern bfd_boolean coff_find_nearest_line
 353   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 354            const char **, unsigned int *));
 355 extern int coff_sizeof_headers
 356   PARAMS ((bfd *, bfd_boolean));
 357 extern bfd_boolean bfd_coff_reloc16_relax_section
 358   PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
 359 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 360   PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
 361            bfd_byte *, bfd_boolean, asymbol **));
 362 extern bfd_vma bfd_coff_reloc16_get_value
 363    PARAMS ((arelent *, struct bfd_link_info *, asection *));
 364 extern void bfd_perform_slip
 365   PARAMS ((bfd *, unsigned int, asection *, bfd_vma));
 366
 367 /* Functions and types in cofflink.c.  */
 368
 369 #define STRING_SIZE_SIZE 4
 370
 371 /* We use a hash table to merge identical enum, struct, and union
 372    definitions in the linker.  */
 373
 374 /* Information we keep for a single element (an enum value, a
 375    structure or union field) in the debug merge hash table.  */
 376
 377 struct coff_debug_merge_element
 378 {
 379   /* Next element.  */
 380   struct coff_debug_merge_element *next;
 381
 382   /* Name.  */
 383   const char *name;
 384
 385   /* Type.  */
 386   unsigned int type;
 387
 388   /* Symbol index for complex type.  */
 389   long tagndx;
 390 };
 391
 392 /* A linked list of debug merge entries for a given name.  */
 393
 394 struct coff_debug_merge_type
 395 {
 396   /* Next type with the same name.  */
 397   struct coff_debug_merge_type *next;
 398
 399   /* Class of type.  */
 400   int class;
 401
 402   /* Symbol index where this type is defined.  */
 403   long indx;
 404
 405   /* List of elements.  */
 406   struct coff_debug_merge_element *elements;
 407 };
 408
 409 /* Information we store in the debug merge hash table.  */
 410
 411 struct coff_debug_merge_hash_entry
 412 {
 413   struct bfd_hash_entry root;
 414
 415   /* A list of types with this name.  */
 416   struct coff_debug_merge_type *types;
 417 };
 418
 419 /* The debug merge hash table.  */
 420
 421 struct coff_debug_merge_hash_table
 422 {
 423   struct bfd_hash_table root;
 424 };
 425
 426 /* Initialize a COFF debug merge hash table.  */
 427
 428 #define coff_debug_merge_hash_table_init(table) \
 429   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
 430
 431 /* Free a COFF debug merge hash table.  */
 432
 433 #define coff_debug_merge_hash_table_free(table) \
 434   (bfd_hash_table_free (&(table)->root))
 435
 436 /* Look up an entry in a COFF debug merge hash table.  */
 437
 438 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 439   ((struct coff_debug_merge_hash_entry *) \
 440    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 441
 442 /* Information we keep for each section in the output file when doing
 443    a relocatable link.  */
 444
 445 struct coff_link_section_info
 446 {
 447   /* The relocs to be output.  */
 448   struct internal_reloc *relocs;
 449   /* For each reloc against a global symbol whose index was not known
 450      when the reloc was handled, the global hash table entry.  */
 451   struct coff_link_hash_entry **rel_hashes;
 452 };
 453
 454 /* Information that we pass around while doing the final link step.  */
 455
 456 struct coff_final_link_info
 457 {
 458   /* General link information.  */
 459   struct bfd_link_info *info;
 460   /* Output BFD.  */
 461   bfd *output_bfd;
 462   /* Used to indicate failure in traversal routine.  */
 463   bfd_boolean failed;
 464   /* If doing "task linking" set only during the time when we want the
 465      global symbol writer to convert the storage class of defined global
 466      symbols from global to static. */
 467   bfd_boolean global_to_static;
 468   /* Hash table for long symbol names.  */
 469   struct bfd_strtab_hash *strtab;
 470   /* When doing a relocatable link, an array of information kept for
 471      each output section, indexed by the target_index field.  */
 472   struct coff_link_section_info *section_info;
 473   /* Symbol index of last C_FILE symbol (-1 if none).  */
 474   long last_file_index;
 475   /* Contents of last C_FILE symbol.  */
 476   struct internal_syment last_file;
 477   /* Symbol index of first aux entry of last .bf symbol with an empty
 478      endndx field (-1 if none).  */
 479   long last_bf_index;
 480   /* Contents of last_bf_index aux entry.  */
 481   union internal_auxent last_bf;
 482   /* Hash table used to merge debug information.  */
 483   struct coff_debug_merge_hash_table debug_merge;
 484   /* Buffer large enough to hold swapped symbols of any input file.  */
 485   struct internal_syment *internal_syms;
 486   /* Buffer large enough to hold sections of symbols of any input file.  */
 487   asection **sec_ptrs;
 488   /* Buffer large enough to hold output indices of symbols of any
 489      input file.  */
 490   long *sym_indices;
 491   /* Buffer large enough to hold output symbols for any input file.  */
 492   bfd_byte *outsyms;
 493   /* Buffer large enough to hold external line numbers for any input
 494      section.  */
 495   bfd_byte *linenos;
 496   /* Buffer large enough to hold any input section.  */
 497   bfd_byte *contents;
 498   /* Buffer large enough to hold external relocs of any input section.  */
 499   bfd_byte *external_relocs;
 500   /* Buffer large enough to hold swapped relocs of any input section.  */
 501   struct internal_reloc *internal_relocs;
 502 };
 503
 504 /* Most COFF variants have no way to record the alignment of a
 505    section.  This struct is used to set a specific alignment based on
 506    the name of the section.  */
 507
 508 struct coff_section_alignment_entry
 509 {
 510   /* The section name.  */
 511   const char *name;
 512
 513   /* This is either (unsigned int) -1, indicating that the section
 514      name must match exactly, or it is the number of letters which
 515      must match at the start of the name.  */
 516   unsigned int comparison_length;
 517
 518   /* These macros may be used to fill in the first two fields in a
 519      structure initialization.  */
 520 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 521 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 522
 523   /* Only use this entry if the default section alignment for this
 524      target is at least that much (as a power of two).  If this field
 525      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 526   unsigned int default_alignment_min;
 527
 528   /* Only use this entry if the default section alignment for this
 529      target is no greater than this (as a power of two).  If this
 530      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 531   unsigned int default_alignment_max;
 532
 533 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 534
 535   /* The desired alignment for this section (as a power of two).  */
 536   unsigned int alignment_power;
 537 };
 538
 539 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 540   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 541 extern bfd_boolean _bfd_coff_link_hash_table_init
 542   PARAMS ((struct coff_link_hash_table *, bfd *,
 543            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 544                                        struct bfd_hash_table *,
 545                                        const char *)));
 546 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 547   PARAMS ((bfd *));
 548 extern const char *_bfd_coff_internal_syment_name
 549   PARAMS ((bfd *, const struct internal_syment *, char *));
 550 extern bfd_boolean _bfd_coff_link_add_symbols
 551   PARAMS ((bfd *, struct bfd_link_info *));
 552 extern bfd_boolean _bfd_coff_final_link
 553   PARAMS ((bfd *, struct bfd_link_info *));
 554 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 555   PARAMS ((bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
 556            struct internal_reloc *));
 557 extern bfd_boolean _bfd_coff_generic_relocate_section
 558   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 559            struct internal_reloc *, struct internal_syment *, asection **));
 560
 561 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 562   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 563 extern bfd_boolean _bfd_coff_write_global_sym
 564   PARAMS ((struct coff_link_hash_entry *, PTR));
 565 extern bfd_boolean _bfd_coff_write_task_globals
 566   PARAMS ((struct coff_link_hash_entry *, PTR));
 567 extern bfd_boolean _bfd_coff_link_input_bfd
 568   PARAMS ((struct coff_final_link_info *, bfd *));
 569 extern bfd_boolean _bfd_coff_reloc_link_order
 570   PARAMS ((bfd *, struct coff_final_link_info *, asection *,
 571            struct bfd_link_order *));
 572
 573
 574 #define coff_get_section_contents_in_window \
 575   _bfd_generic_get_section_contents_in_window
 576
 577 /* Functions in xcofflink.c.  */
 578
 579 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 580   PARAMS ((bfd *));
 581 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 582   PARAMS ((bfd *, asymbol **));
 583 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 584   PARAMS ((bfd *));
 585 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 586   PARAMS ((bfd *, arelent **, asymbol **));
 587 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 588   PARAMS ((bfd *));
 589 extern void _bfd_xcoff_bfd_link_hash_table_free
 590   PARAMS ((struct bfd_link_hash_table *));
 591 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 592   PARAMS ((bfd *, struct bfd_link_info *));
 593 extern bfd_boolean _bfd_xcoff_bfd_final_link
 594   PARAMS ((bfd *, struct bfd_link_info *));
 595 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 596   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 597            struct internal_reloc *, struct internal_syment *, asection **));
 598
 599 /* Functions in coff-ppc.c.  FIXME: These are called be pe.em in the
 600    linker, and so should start with bfd and be declared in bfd.h.  */
 601
 602 extern bfd_boolean ppc_allocate_toc_section
 603   PARAMS ((struct bfd_link_info *));
 604 extern bfd_boolean ppc_process_before_allocation
 605   PARAMS ((bfd *, struct bfd_link_info *));
 606
 607 /* Extracted from coffcode.h.  */
 608 typedef struct coff_ptr_struct
 609 {
 610   /* Remembers the offset from the first symbol in the file for
 611      this symbol. Generated by coff_renumber_symbols. */
 612   unsigned int offset;
 613
 614   /* Should the value of this symbol be renumbered.  Used for
 615      XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 616   unsigned int fix_value : 1;
 617
 618   /* Should the tag field of this symbol be renumbered.
 619      Created by coff_pointerize_aux. */
 620   unsigned int fix_tag : 1;
 621
 622   /* Should the endidx field of this symbol be renumbered.
 623      Created by coff_pointerize_aux. */
 624   unsigned int fix_end : 1;
 625
 626   /* Should the x_csect.x_scnlen field be renumbered.
 627      Created by coff_pointerize_aux. */
 628   unsigned int fix_scnlen : 1;
 629
 630   /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 631      index into the line number entries.  Set by coff_slurp_symbol_table.  */
 632   unsigned int fix_line : 1;
 633
 634   /* The container for the symbol structure as read and translated
 635      from the file. */
 636   union
 637   {
 638     union internal_auxent auxent;
 639     struct internal_syment syment;
 640   } u;
 641 } combined_entry_type;
 642
 643
 644 /* Each canonical asymbol really looks like this: */
 645
 646 typedef struct coff_symbol_struct
 647 {
 648   /* The actual symbol which the rest of BFD works with */
 649   asymbol symbol;
 650
 651   /* A pointer to the hidden information for this symbol */
 652   combined_entry_type *native;
 653
 654   /* A pointer to the linenumber information for this symbol */
 655   struct lineno_cache_entry *lineno;
 656
 657   /* Have the line numbers been relocated yet ? */
 658   bfd_boolean done_lineno;
 659 } coff_symbol_type;
 660 /* COFF symbol classifications.  */
 661
 662 enum coff_symbol_classification
 663 {
 664   /* Global symbol.  */
 665   COFF_SYMBOL_GLOBAL,
 666   /* Common symbol.  */
 667   COFF_SYMBOL_COMMON,
 668   /* Undefined symbol.  */
 669   COFF_SYMBOL_UNDEFINED,
 670   /* Local symbol.  */
 671   COFF_SYMBOL_LOCAL,
 672   /* PE section symbol.  */
 673   COFF_SYMBOL_PE_SECTION
 674 };
 675
 676 typedef struct
 677 {
 678   void (*_bfd_coff_swap_aux_in)
 679     PARAMS ((bfd *, PTR, int, int, int, int, PTR));
 680
 681   void (*_bfd_coff_swap_sym_in)
 682     PARAMS ((bfd *, PTR, PTR));
 683
 684   void (*_bfd_coff_swap_lineno_in)
 685     PARAMS ((bfd *, PTR, PTR));
 686
 687   unsigned int (*_bfd_coff_swap_aux_out)
 688     PARAMS ((bfd *, PTR, int, int, int, int, PTR));
 689
 690   unsigned int (*_bfd_coff_swap_sym_out)
 691     PARAMS ((bfd *, PTR, PTR));
 692
 693   unsigned int (*_bfd_coff_swap_lineno_out)
 694     PARAMS ((bfd *, PTR, PTR));
 695
 696   unsigned int (*_bfd_coff_swap_reloc_out)
 697     PARAMS ((bfd *, PTR, PTR));
 698
 699   unsigned int (*_bfd_coff_swap_filehdr_out)
 700     PARAMS ((bfd *, PTR, PTR));
 701
 702   unsigned int (*_bfd_coff_swap_aouthdr_out)
 703     PARAMS ((bfd *, PTR, PTR));
 704
 705   unsigned int (*_bfd_coff_swap_scnhdr_out)
 706     PARAMS ((bfd *, PTR, PTR));
 707
 708   unsigned int _bfd_filhsz;
 709   unsigned int _bfd_aoutsz;
 710   unsigned int _bfd_scnhsz;
 711   unsigned int _bfd_symesz;
 712   unsigned int _bfd_auxesz;
 713   unsigned int _bfd_relsz;
 714   unsigned int _bfd_linesz;
 715   unsigned int _bfd_filnmlen;
 716   bfd_boolean _bfd_coff_long_filenames;
 717   bfd_boolean _bfd_coff_long_section_names;
 718   unsigned int _bfd_coff_default_section_alignment_power;
 719   bfd_boolean _bfd_coff_force_symnames_in_strings;
 720   unsigned int _bfd_coff_debug_string_prefix_length;
 721
 722   void (*_bfd_coff_swap_filehdr_in)
 723     PARAMS ((bfd *, PTR, PTR));
 724
 725   void (*_bfd_coff_swap_aouthdr_in)
 726     PARAMS ((bfd *, PTR, PTR));
 727
 728   void (*_bfd_coff_swap_scnhdr_in)
 729     PARAMS ((bfd *, PTR, PTR));
 730
 731   void (*_bfd_coff_swap_reloc_in)
 732     PARAMS ((bfd *abfd, PTR, PTR));
 733
 734   bfd_boolean (*_bfd_coff_bad_format_hook)
 735     PARAMS ((bfd *, PTR));
 736
 737   bfd_boolean (*_bfd_coff_set_arch_mach_hook)
 738     PARAMS ((bfd *, PTR));
 739
 740   PTR (*_bfd_coff_mkobject_hook)
 741     PARAMS ((bfd *, PTR, PTR));
 742
 743   bfd_boolean (*_bfd_styp_to_sec_flags_hook)
 744     PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
 745
 746   void (*_bfd_set_alignment_hook)
 747     PARAMS ((bfd *, asection *, PTR));
 748
 749   bfd_boolean (*_bfd_coff_slurp_symbol_table)
 750     PARAMS ((bfd *));
 751
 752   bfd_boolean (*_bfd_coff_symname_in_debug)
 753     PARAMS ((bfd *, struct internal_syment *));
 754
 755   bfd_boolean (*_bfd_coff_pointerize_aux_hook)
 756     PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
 757             unsigned int, combined_entry_type *));
 758
 759   bfd_boolean (*_bfd_coff_print_aux)
 760     PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 761             combined_entry_type *, unsigned int));
 762
 763   void (*_bfd_coff_reloc16_extra_cases)
 764     PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 765            bfd_byte *, unsigned int *, unsigned int *));
 766
 767   int (*_bfd_coff_reloc16_estimate)
 768     PARAMS ((bfd *, asection *, arelent *, unsigned int,
 769             struct bfd_link_info *));
 770
 771   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 772     PARAMS ((bfd *, struct internal_syment *));
 773
 774   bfd_boolean (*_bfd_coff_compute_section_file_positions)
 775     PARAMS ((bfd *));
 776
 777   bfd_boolean (*_bfd_coff_start_final_link)
 778     PARAMS ((bfd *, struct bfd_link_info *));
 779
 780   bfd_boolean (*_bfd_coff_relocate_section)
 781     PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 782             struct internal_reloc *, struct internal_syment *, asection **));
 783
 784   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 785     PARAMS ((bfd *, asection *, struct internal_reloc *,
 786             struct coff_link_hash_entry *, struct internal_syment *,
 787             bfd_vma *));
 788
 789   bfd_boolean (*_bfd_coff_adjust_symndx)
 790     PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
 791             struct internal_reloc *, bfd_boolean *));
 792
 793   bfd_boolean (*_bfd_coff_link_add_one_symbol)
 794     PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
 795             asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
 796             struct bfd_link_hash_entry **));
 797
 798   bfd_boolean (*_bfd_coff_link_output_has_begun)
 799     PARAMS ((bfd *, struct coff_final_link_info *));
 800
 801   bfd_boolean (*_bfd_coff_final_link_postscript)
 802     PARAMS ((bfd *, struct coff_final_link_info *));
 803
 804 } bfd_coff_backend_data;
 805
 806 #define coff_backend_info(abfd) \
 807   ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 808
 809 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 810   ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 811
 812 #define bfd_coff_swap_sym_in(a,e,i) \
 813   ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 814
 815 #define bfd_coff_swap_lineno_in(a,e,i) \
 816   ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 817
 818 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 819   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 820
 821 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 822   ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 823
 824 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 825   ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 826
 827 #define bfd_coff_swap_sym_out(abfd, i,o) \
 828   ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 829
 830 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 831   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 832
 833 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 834   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 835
 836 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 837   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 838
 839 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 840 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 841 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 842 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 843 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 844 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 845 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 846 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 847 #define bfd_coff_long_filenames(abfd) \
 848   (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 849 #define bfd_coff_long_section_names(abfd) \
 850   (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 851 #define bfd_coff_default_section_alignment_power(abfd) \
 852   (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 853 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 854   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 855
 856 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 857   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 858
 859 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 860   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 861
 862 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 863   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 864
 865 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 866   ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 867
 868 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 869   ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 870 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 871   ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
 872    (abfd, filehdr, aouthdr))
 873
 874 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
 875   ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 876    (abfd, scnhdr, name, section, flags_ptr))
 877
 878 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 879   ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 880
 881 #define bfd_coff_slurp_symbol_table(abfd)\
 882   ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 883
 884 #define bfd_coff_symname_in_debug(abfd, sym)\
 885   ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 886
 887 #define bfd_coff_force_symnames_in_strings(abfd)\
 888   (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 889
 890 #define bfd_coff_debug_string_prefix_length(abfd)\
 891   (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 892
 893 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 894   ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 895    (abfd, file, base, symbol, aux, indaux))
 896
 897 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
 898                                      reloc, data, src_ptr, dst_ptr)\
 899   ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 900    (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 901
 902 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 903   ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 904    (abfd, section, reloc, shrink, link_info))
 905
 906 #define bfd_coff_classify_symbol(abfd, sym)\
 907   ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 908    (abfd, sym))
 909
 910 #define bfd_coff_compute_section_file_positions(abfd)\
 911   ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 912    (abfd))
 913
 914 #define bfd_coff_start_final_link(obfd, info)\
 915   ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 916    (obfd, info))
 917 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
 918   ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
 919    (obfd, info, ibfd, o, con, rel, isyms, secs))
 920 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
 921   ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
 922    (abfd, sec, rel, h, sym, addendp))
 923 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
 924   ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
 925    (obfd, info, ibfd, sec, rel, adjustedp))
 926 #define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
 927                                      value, string, cp, coll, hashp)\
 928   ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 929    (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 930
 931 #define bfd_coff_link_output_has_begun(a,p) \
 932   ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
 933 #define bfd_coff_final_link_postscript(a,p) \
 934   ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
 935