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