bfd/libcoff.h

   1 /* BFD COFF object file private structure.
   2    Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 98, 1999
   3    Free Software Foundation, Inc.
   4    Written by Cygnus Support.
   5
   6 ** NOTE: libcoff.h is a GENERATED file.  Don't change it; instead,
   7 ** change libcoff-in.h or coffcode.h.
   8
   9 This file is part of BFD, the Binary File Descriptor library.
  10
  11 This program is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 2 of the License, or
  14 (at your option) any later version.
  15
  16 This program is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 You should have received a copy of the GNU General Public License
  22 along with this program; if not, write to the Free Software
  23 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  24
  25 #include "bfdlink.h"
  26
  27 /* Object file tdata; access macros */
  28
  29 #define coff_data(bfd)          ((bfd)->tdata.coff_obj_data)
  30 #define exec_hdr(bfd)           (coff_data(bfd)->hdr)
  31 #define obj_pe(bfd)             (coff_data(bfd)->pe)
  32 #define obj_symbols(bfd)        (coff_data(bfd)->symbols)
  33 #define obj_sym_filepos(bfd)    (coff_data(bfd)->sym_filepos)
  34
  35 #define obj_relocbase(bfd)      (coff_data(bfd)->relocbase)
  36 #define obj_raw_syments(bfd)    (coff_data(bfd)->raw_syments)
  37 #define obj_raw_syment_count(bfd)       (coff_data(bfd)->raw_syment_count)
  38 #define obj_convert(bfd)        (coff_data(bfd)->conversion_table)
  39 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
  40
  41 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
  42 #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
  43 #define obj_coff_strings(bfd)   (coff_data (bfd)->strings)
  44 #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
  45 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
  46
  47 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
  48
  49 /* `Tdata' information kept for COFF files.  */
  50
  51 typedef struct coff_tdata
  52 {
  53   struct   coff_symbol_struct *symbols; /* symtab for input bfd */
  54   unsigned int *conversion_table;
  55   int conv_table_size;
  56   file_ptr sym_filepos;
  57
  58   struct coff_ptr_struct *raw_syments;
  59   unsigned int raw_syment_count;
  60
  61   /* These are only valid once writing has begun */
  62   long int relocbase;
  63
  64   /* These members communicate important constants about the symbol table
  65      to GDB's symbol-reading code.  These `constants' unfortunately vary
  66      from coff implementation to implementation...  */
  67   unsigned local_n_btmask;
  68   unsigned local_n_btshft;
  69   unsigned local_n_tmask;
  70   unsigned local_n_tshift;
  71   unsigned local_symesz;
  72   unsigned local_auxesz;
  73   unsigned local_linesz;
  74
  75   /* The unswapped external symbols.  May be NULL.  Read by
  76      _bfd_coff_get_external_symbols.  */
  77   PTR external_syms;
  78   /* If this is true, the external_syms may not be freed.  */
  79   boolean keep_syms;
  80
  81   /* The string table.  May be NULL.  Read by
  82      _bfd_coff_read_string_table.  */
  83   char *strings;
  84   /* If this is true, the strings may not be freed.  */
  85   boolean keep_strings;
  86
  87   /* is this a PE format coff file */
  88   int pe;
  89   /* Used by the COFF backend linker.  */
  90   struct coff_link_hash_entry **sym_hashes;
  91
  92   /* used by the pe linker for PowerPC */
  93   int *local_toc_sym_map;
  94
  95   struct bfd_link_info *link_info;
  96
  97   /* Used by coff_find_nearest_line.  */
  98   PTR line_info;
  99
 100   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 101      used by ARM code.  */
 102   flagword flags;
 103
 104 } coff_data_type;
 105
 106 /* Tdata for pe image files. */
 107 typedef struct pe_tdata
 108 {
 109   coff_data_type coff;
 110   struct internal_extra_pe_aouthdr pe_opthdr;
 111   int dll;
 112   int has_reloc_section;
 113   boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
 114   flagword real_flags;
 115 } pe_data_type;
 116
 117 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 118
 119 /* Tdata for XCOFF files.  */
 120
 121 struct xcoff_tdata
 122 {
 123   /* Basic COFF information.  */
 124   coff_data_type coff;
 125
 126   /* True if a large a.out header should be generated.  */
 127   boolean full_aouthdr;
 128
 129   /* TOC value.  */
 130   bfd_vma toc;
 131
 132   /* Index of section holding TOC.  */
 133   int sntoc;
 134
 135   /* Index of section holding entry point.  */
 136   int snentry;
 137
 138   /* .text alignment from optional header.  */
 139   int text_align_power;
 140
 141   /* .data alignment from optional header.  */
 142   int data_align_power;
 143
 144   /* modtype from optional header.  */
 145   short modtype;
 146
 147   /* cputype from optional header.  */
 148   short cputype;
 149
 150   /* maxdata from optional header.  */
 151   bfd_size_type maxdata;
 152
 153   /* maxstack from optional header.  */
 154   bfd_size_type maxstack;
 155
 156   /* Used by the XCOFF backend linker.  */
 157   asection **csects;
 158   unsigned long *debug_indices;
 159   unsigned int import_file_id;
 160 };
 161
 162 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 163
 164 /* We take the address of the first element of a asymbol to ensure that the
 165  * macro is only ever applied to an asymbol.  */
 166 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 167
 168 /* The used_by_bfd field of a section may be set to a pointer to this
 169    structure.  */
 170
 171 struct coff_section_tdata
 172 {
 173   /* The relocs, swapped into COFF internal form.  This may be NULL.  */
 174   struct internal_reloc *relocs;
 175   /* If this is true, the relocs entry may not be freed.  */
 176   boolean keep_relocs;
 177   /* The section contents.  This may be NULL.  */
 178   bfd_byte *contents;
 179   /* If this is true, the contents entry may not be freed.  */
 180   boolean keep_contents;
 181   /* Information cached by coff_find_nearest_line.  */
 182   bfd_vma offset;
 183   unsigned int i;
 184   const char *function;
 185   int line_base;
 186   /* A pointer used for .stab linking optimizations.  */
 187   PTR stab_info;
 188   /* Available for individual backends.  */
 189   PTR tdata;
 190 };
 191
 192 /* An accessor macro for the coff_section_tdata structure.  */
 193 #define coff_section_data(abfd, sec) \
 194   ((struct coff_section_tdata *) (sec)->used_by_bfd)
 195
 196 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 197
 198 struct xcoff_section_tdata
 199 {
 200   /* Used for XCOFF csects created by the linker; points to the real
 201      XCOFF section which contains this csect.  */
 202   asection *enclosing;
 203   /* The lineno_count field for the enclosing section, because we are
 204      going to clobber it there.  */
 205   unsigned int lineno_count;
 206   /* The first and one past the last symbol indices for symbols used
 207      by this csect.  */
 208   unsigned long first_symndx;
 209   unsigned long last_symndx;
 210 };
 211
 212 /* An accessor macro the xcoff_section_tdata structure.  */
 213 #define xcoff_section_data(abfd, sec) \
 214   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 215
 216 /* Tdata for sections in PEI image files.  */
 217
 218 struct pei_section_tdata
 219 {
 220   /* The virtual size of the section.  */
 221   bfd_size_type virt_size;
 222 };
 223
 224 /* An accessor macro for the pei_section_tdata structure.  */
 225 #define pei_section_data(abfd, sec) \
 226   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 227
 228 /* COFF linker hash table entries.  */
 229
 230 struct coff_link_hash_entry
 231 {
 232   struct bfd_link_hash_entry root;
 233
 234   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 235      there is a reloc against this symbol.  */
 236   long indx;
 237
 238   /* Symbol type.  */
 239   unsigned short type;
 240
 241   /* Symbol class.  */
 242   unsigned char class;
 243
 244   /* Number of auxiliary entries.  */
 245   char numaux;
 246
 247   /* BFD to take auxiliary entries from.  */
 248   bfd *auxbfd;
 249
 250   /* Pointer to array of auxiliary entries, if any.  */
 251   union internal_auxent *aux;
 252
 253   /* Flag word; legal values follow.  */
 254   unsigned short coff_link_hash_flags;
 255   /* Symbol is a PE section symbol.  */
 256 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 257 };
 258
 259 /* COFF linker hash table.  */
 260
 261 struct coff_link_hash_table
 262 {
 263   struct bfd_link_hash_table root;
 264   /* A pointer to information used to link stabs in sections.  */
 265   PTR stab_info;
 266 };
 267
 268 /* Look up an entry in a COFF linker hash table.  */
 269
 270 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 271   ((struct coff_link_hash_entry *)                                      \
 272    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 273                          (copy), (follow)))
 274
 275 /* Traverse a COFF linker hash table.  */
 276
 277 #define coff_link_hash_traverse(table, func, info)                      \
 278   (bfd_link_hash_traverse                                               \
 279    (&(table)->root,                                                     \
 280     (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
 281     (info)))
 282
 283 /* Get the COFF linker hash table from a link_info structure.  */
 284
 285 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 286
 287 /* Functions in coffgen.c.  */
 288 extern const bfd_target *coff_object_p PARAMS ((bfd *));
 289 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
 290 extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
 291 extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
 292 extern int coff_count_linenumbers PARAMS ((bfd *));
 293 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
 294 extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
 295 extern void coff_mangle_symbols PARAMS ((bfd *));
 296 extern boolean coff_write_symbols PARAMS ((bfd *));
 297 extern boolean coff_write_linenumbers PARAMS ((bfd *));
 298 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
 299 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
 300 extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
 301 extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
 302 extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
 303 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
 304 extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
 305 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
 306 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
 307                                        bfd_print_symbol_type how));
 308 extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
 309                                           symbol_info *ret));
 310 extern boolean _bfd_coff_is_local_label_name PARAMS ((bfd *, const char *));
 311 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
 312                                                     unsigned long));
 313 extern boolean coff_find_nearest_line PARAMS ((bfd *,
 314                                                asection *,
 315                                                asymbol **,
 316                                                bfd_vma offset,
 317                                                CONST char **filename_ptr,
 318                                                CONST char **functionname_ptr,
 319                                                unsigned int *line_ptr));
 320 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
 321 extern boolean bfd_coff_reloc16_relax_section
 322   PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
 323 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 324   PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
 325            bfd_byte *, boolean relocateable, asymbol **));
 326 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
 327                                                    struct bfd_link_info *,
 328                                                    asection *));
 329 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
 330                                       asection *input_section,
 331                                       bfd_vma val));
 332
 333 /* Functions and types in cofflink.c.  */
 334
 335 #define STRING_SIZE_SIZE (4)
 336
 337 /* We use a hash table to merge identical enum, struct, and union
 338    definitions in the linker.  */
 339
 340 /* Information we keep for a single element (an enum value, a
 341    structure or union field) in the debug merge hash table.  */
 342
 343 struct coff_debug_merge_element
 344 {
 345   /* Next element.  */
 346   struct coff_debug_merge_element *next;
 347
 348   /* Name.  */
 349   const char *name;
 350
 351   /* Type.  */
 352   unsigned int type;
 353
 354   /* Symbol index for complex type.  */
 355   long tagndx;
 356 };
 357
 358 /* A linked list of debug merge entries for a given name.  */
 359
 360 struct coff_debug_merge_type
 361 {
 362   /* Next type with the same name.  */
 363   struct coff_debug_merge_type *next;
 364
 365   /* Class of type.  */
 366   int class;
 367
 368   /* Symbol index where this type is defined.  */
 369   long indx;
 370
 371   /* List of elements.  */
 372   struct coff_debug_merge_element *elements;
 373 };
 374
 375 /* Information we store in the debug merge hash table.  */
 376
 377 struct coff_debug_merge_hash_entry
 378 {
 379   struct bfd_hash_entry root;
 380
 381   /* A list of types with this name.  */
 382   struct coff_debug_merge_type *types;
 383 };
 384
 385 /* The debug merge hash table.  */
 386
 387 struct coff_debug_merge_hash_table
 388 {
 389   struct bfd_hash_table root;
 390 };
 391
 392 /* Initialize a COFF debug merge hash table.  */
 393
 394 #define coff_debug_merge_hash_table_init(table) \
 395   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
 396
 397 /* Free a COFF debug merge hash table.  */
 398
 399 #define coff_debug_merge_hash_table_free(table) \
 400   (bfd_hash_table_free (&(table)->root))
 401
 402 /* Look up an entry in a COFF debug merge hash table.  */
 403
 404 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 405   ((struct coff_debug_merge_hash_entry *) \
 406    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 407
 408 /* Information we keep for each section in the output file when doing
 409    a relocateable link.  */
 410
 411 struct coff_link_section_info
 412 {
 413   /* The relocs to be output.  */
 414   struct internal_reloc *relocs;
 415   /* For each reloc against a global symbol whose index was not known
 416      when the reloc was handled, the global hash table entry.  */
 417   struct coff_link_hash_entry **rel_hashes;
 418 };
 419
 420 /* Information that we pass around while doing the final link step.  */
 421
 422 struct coff_final_link_info
 423 {
 424   /* General link information.  */
 425   struct bfd_link_info *info;
 426   /* Output BFD.  */
 427   bfd *output_bfd;
 428   /* Used to indicate failure in traversal routine.  */
 429   boolean failed;
 430   /* If doing "task linking" set only during the time when we want the
 431      global symbol writer to convert the storage class of defined global
 432      symbols from global to static. */
 433   boolean global_to_static;
 434   /* Hash table for long symbol names.  */
 435   struct bfd_strtab_hash *strtab;
 436   /* When doing a relocateable link, an array of information kept for
 437      each output section, indexed by the target_index field.  */
 438   struct coff_link_section_info *section_info;
 439   /* Symbol index of last C_FILE symbol (-1 if none).  */
 440   long last_file_index;
 441   /* Contents of last C_FILE symbol.  */
 442   struct internal_syment last_file;
 443   /* Symbol index of first aux entry of last .bf symbol with an empty
 444      endndx field (-1 if none).  */
 445   long last_bf_index;
 446   /* Contents of last_bf_index aux entry.  */
 447   union internal_auxent last_bf;
 448   /* Hash table used to merge debug information.  */
 449   struct coff_debug_merge_hash_table debug_merge;
 450   /* Buffer large enough to hold swapped symbols of any input file.  */
 451   struct internal_syment *internal_syms;
 452   /* Buffer large enough to hold sections of symbols of any input file.  */
 453   asection **sec_ptrs;
 454   /* Buffer large enough to hold output indices of symbols of any
 455      input file.  */
 456   long *sym_indices;
 457   /* Buffer large enough to hold output symbols for any input file.  */
 458   bfd_byte *outsyms;
 459   /* Buffer large enough to hold external line numbers for any input
 460      section.  */
 461   bfd_byte *linenos;
 462   /* Buffer large enough to hold any input section.  */
 463   bfd_byte *contents;
 464   /* Buffer large enough to hold external relocs of any input section.  */
 465   bfd_byte *external_relocs;
 466   /* Buffer large enough to hold swapped relocs of any input section.  */
 467   struct internal_reloc *internal_relocs;
 468 };
 469
 470 /* Most COFF variants have no way to record the alignment of a
 471    section.  This struct is used to set a specific alignment based on
 472    the name of the section.  */
 473
 474 struct coff_section_alignment_entry
 475 {
 476   /* The section name.  */
 477   const char *name;
 478
 479   /* This is either (unsigned int) -1, indicating that the section
 480      name must match exactly, or it is the number of letters which
 481      must match at the start of the name.  */
 482   unsigned int comparison_length;
 483
 484   /* These macros may be used to fill in the first two fields in a
 485      structure initialization.  */
 486 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 487 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 488
 489   /* Only use this entry if the default section alignment for this
 490      target is at least that much (as a power of two).  If this field
 491      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 492   unsigned int default_alignment_min;
 493
 494   /* Only use this entry if the default section alignment for this
 495      target is no greater than this (as a power of two).  If this
 496      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 497   unsigned int default_alignment_max;
 498
 499 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 500
 501   /* The desired alignment for this section (as a power of two).  */
 502   unsigned int alignment_power;
 503 };
 504
 505 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 506   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 507 extern boolean _bfd_coff_link_hash_table_init
 508   PARAMS ((struct coff_link_hash_table *, bfd *,
 509            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 510                                        struct bfd_hash_table *,
 511                                        const char *)));
 512 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 513   PARAMS ((bfd *));
 514 extern const char *_bfd_coff_internal_syment_name
 515   PARAMS ((bfd *, const struct internal_syment *, char *));
 516 extern boolean _bfd_coff_link_add_symbols
 517   PARAMS ((bfd *, struct bfd_link_info *));
 518 extern boolean _bfd_coff_final_link
 519   PARAMS ((bfd *, struct bfd_link_info *));
 520 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 521   PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
 522            struct internal_reloc *));
 523 extern boolean _bfd_coff_generic_relocate_section
 524   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 525            struct internal_reloc *, struct internal_syment *, asection **));
 526
 527 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 528   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 529 extern boolean _bfd_coff_write_global_sym
 530   PARAMS ((struct coff_link_hash_entry *, PTR));
 531 extern boolean _bfd_coff_write_task_globals
 532   PARAMS ((struct coff_link_hash_entry *, PTR));
 533 extern boolean _bfd_coff_link_input_bfd
 534   PARAMS ((struct coff_final_link_info *, bfd *));
 535 extern boolean _bfd_coff_reloc_link_order
 536   PARAMS ((bfd *, struct coff_final_link_info *, asection *,
 537            struct bfd_link_order *));
 538
 539
 540 #define coff_get_section_contents_in_window \
 541   _bfd_generic_get_section_contents_in_window
 542
 543 /* Functions in xcofflink.c.  */
 544
 545 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 546 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 547   PARAMS ((bfd *, asymbol **));
 548 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
 549 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 550   PARAMS ((bfd *, arelent **, asymbol **));
 551 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 552   PARAMS ((bfd *));
 553 extern boolean _bfd_xcoff_bfd_link_add_symbols
 554   PARAMS ((bfd *, struct bfd_link_info *));
 555 extern boolean _bfd_xcoff_bfd_final_link
 556   PARAMS ((bfd *, struct bfd_link_info *));
 557 extern boolean _bfd_ppc_xcoff_relocate_section
 558   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 559            struct internal_reloc *, struct internal_syment *, asection **));
 560
 561 /* Functions in coff-ppc.c.  FIXME: These are called be pe.em in the
 562    linker, and so should start with bfd and be declared in bfd.h.  */
 563
 564 extern boolean ppc_allocate_toc_section PARAMS ((struct bfd_link_info *));
 565 extern boolean ppc_process_before_allocation
 566   PARAMS ((bfd *, struct bfd_link_info *));
 567
 568 /* And more taken from the source .. */
 569
 570 typedef struct coff_ptr_struct
 571 {
 572
 573         /* Remembers the offset from the first symbol in the file for
 574           this symbol. Generated by coff_renumber_symbols. */
 575 unsigned int offset;
 576
 577         /* Should the value of this symbol be renumbered.  Used for
 578           XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 579 unsigned int fix_value : 1;
 580
 581         /* Should the tag field of this symbol be renumbered.
 582           Created by coff_pointerize_aux. */
 583 unsigned int fix_tag : 1;
 584
 585         /* Should the endidx field of this symbol be renumbered.
 586           Created by coff_pointerize_aux. */
 587 unsigned int fix_end : 1;
 588
 589         /* Should the x_csect.x_scnlen field be renumbered.
 590           Created by coff_pointerize_aux. */
 591 unsigned int fix_scnlen : 1;
 592
 593         /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 594           index into the line number entries.  Set by
 595           coff_slurp_symbol_table.  */
 596 unsigned int fix_line : 1;
 597
 598         /* The container for the symbol structure as read and translated
 599            from the file. */
 600
 601 union {
 602    union internal_auxent auxent;
 603    struct internal_syment syment;
 604  } u;
 605 } combined_entry_type;
 606
 607
 608  /* Each canonical asymbol really looks like this: */
 609
 610 typedef struct coff_symbol_struct
 611 {
 612     /* The actual symbol which the rest of BFD works with */
 613 asymbol symbol;
 614
 615     /* A pointer to the hidden information for this symbol */
 616 combined_entry_type *native;
 617
 618     /* A pointer to the linenumber information for this symbol */
 619 struct lineno_cache_entry *lineno;
 620
 621     /* Have the line numbers been relocated yet ? */
 622 boolean done_lineno;
 623 } coff_symbol_type;
 624  /* COFF symbol classifications.  */
 625
 626 enum coff_symbol_classification
 627 {
 628    /* Global symbol.  */
 629   COFF_SYMBOL_GLOBAL,
 630    /* Common symbol.  */
 631   COFF_SYMBOL_COMMON,
 632    /* Undefined symbol.  */
 633   COFF_SYMBOL_UNDEFINED,
 634    /* Local symbol.  */
 635   COFF_SYMBOL_LOCAL,
 636    /* PE section symbol.  */
 637   COFF_SYMBOL_PE_SECTION
 638 };
 639
 640 typedef struct
 641 {
 642   void (*_bfd_coff_swap_aux_in) PARAMS ((
 643        bfd            *abfd,
 644        PTR             ext,
 645        int             type,
 646        int             class,
 647        int             indaux,
 648        int             numaux,
 649        PTR             in));
 650
 651   void (*_bfd_coff_swap_sym_in) PARAMS ((
 652        bfd            *abfd ,
 653        PTR             ext,
 654        PTR             in));
 655
 656   void (*_bfd_coff_swap_lineno_in) PARAMS ((
 657        bfd            *abfd,
 658        PTR            ext,
 659        PTR             in));
 660
 661  unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
 662        bfd     *abfd,
 663        PTR     in,
 664        int     type,
 665        int     class,
 666        int     indaux,
 667        int     numaux,
 668        PTR     ext));
 669
 670  unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
 671       bfd      *abfd,
 672       PTR      in,
 673       PTR      ext));
 674
 675  unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
 676        bfd     *abfd,
 677        PTR     in,
 678        PTR     ext));
 679
 680  unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
 681        bfd     *abfd,
 682        PTR     src,
 683        PTR     dst));
 684
 685  unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
 686        bfd     *abfd,
 687        PTR     in,
 688        PTR     out));
 689
 690  unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
 691        bfd     *abfd,
 692        PTR     in,
 693        PTR     out));
 694
 695  unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
 696        bfd     *abfd,
 697        PTR     in,
 698        PTR     out));
 699
 700  unsigned int _bfd_filhsz;
 701  unsigned int _bfd_aoutsz;
 702  unsigned int _bfd_scnhsz;
 703  unsigned int _bfd_symesz;
 704  unsigned int _bfd_auxesz;
 705  unsigned int _bfd_relsz;
 706  unsigned int _bfd_linesz;
 707  boolean _bfd_coff_long_filenames;
 708  boolean _bfd_coff_long_section_names;
 709  unsigned int _bfd_coff_default_section_alignment_power;
 710  void (*_bfd_coff_swap_filehdr_in) PARAMS ((
 711        bfd     *abfd,
 712        PTR     ext,
 713        PTR     in));
 714  void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
 715        bfd     *abfd,
 716        PTR     ext,
 717        PTR     in));
 718  void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
 719        bfd     *abfd,
 720        PTR     ext,
 721        PTR     in));
 722  void (*_bfd_coff_swap_reloc_in) PARAMS ((
 723        bfd     *abfd,
 724        PTR     ext,
 725        PTR     in));
 726  boolean (*_bfd_coff_bad_format_hook) PARAMS ((
 727        bfd     *abfd,
 728        PTR     internal_filehdr));
 729  boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
 730        bfd     *abfd,
 731        PTR     internal_filehdr));
 732  PTR (*_bfd_coff_mkobject_hook) PARAMS ((
 733        bfd     *abfd,
 734        PTR     internal_filehdr,
 735        PTR     internal_aouthdr));
 736  flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
 737        bfd     *abfd,
 738        PTR     internal_scnhdr,
 739        const char *name));
 740  void (*_bfd_set_alignment_hook) PARAMS ((
 741        bfd     *abfd,
 742        asection *sec,
 743        PTR     internal_scnhdr));
 744  boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
 745        bfd     *abfd));
 746  boolean (*_bfd_coff_symname_in_debug) PARAMS ((
 747        bfd     *abfd,
 748        struct internal_syment *sym));
 749  boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
 750        bfd *abfd,
 751        combined_entry_type *table_base,
 752        combined_entry_type *symbol,
 753        unsigned int indaux,
 754        combined_entry_type *aux));
 755  boolean (*_bfd_coff_print_aux) PARAMS ((
 756        bfd *abfd,
 757        FILE *file,
 758        combined_entry_type *table_base,
 759        combined_entry_type *symbol,
 760        combined_entry_type *aux,
 761        unsigned int indaux));
 762  void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
 763        bfd     *abfd,
 764        struct bfd_link_info *link_info,
 765        struct bfd_link_order *link_order,
 766        arelent *reloc,
 767        bfd_byte *data,
 768        unsigned int *src_ptr,
 769        unsigned int *dst_ptr));
 770  int (*_bfd_coff_reloc16_estimate) PARAMS ((
 771        bfd *abfd,
 772        asection *input_section,
 773        arelent *r,
 774        unsigned int shrink,
 775        struct bfd_link_info *link_info));
 776  enum coff_symbol_classification (*_bfd_coff_classify_symbol) PARAMS ((
 777        bfd *abfd,
 778        struct internal_syment *));
 779  boolean (*_bfd_coff_compute_section_file_positions) PARAMS ((
 780        bfd *abfd));
 781  boolean (*_bfd_coff_start_final_link) PARAMS ((
 782        bfd *output_bfd,
 783        struct bfd_link_info *info));
 784  boolean (*_bfd_coff_relocate_section) PARAMS ((
 785        bfd *output_bfd,
 786        struct bfd_link_info *info,
 787        bfd *input_bfd,
 788        asection *input_section,
 789        bfd_byte *contents,
 790        struct internal_reloc *relocs,
 791        struct internal_syment *syms,
 792        asection **sections));
 793  reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
 794        bfd *abfd,
 795        asection *sec,
 796        struct internal_reloc *rel,
 797        struct coff_link_hash_entry *h,
 798        struct internal_syment *sym,
 799        bfd_vma *addendp));
 800  boolean (*_bfd_coff_adjust_symndx) PARAMS ((
 801        bfd *obfd,
 802        struct bfd_link_info *info,
 803        bfd *ibfd,
 804        asection *sec,
 805        struct internal_reloc *reloc,
 806        boolean *adjustedp));
 807  boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
 808        struct bfd_link_info *info,
 809        bfd *abfd,
 810        const char *name,
 811        flagword flags,
 812        asection *section,
 813        bfd_vma value,
 814        const char *string,
 815        boolean copy,
 816        boolean collect,
 817        struct bfd_link_hash_entry **hashp));
 818
 819  boolean (*_bfd_coff_link_output_has_begun) PARAMS ((
 820        bfd * abfd,
 821        struct coff_final_link_info * pfinfo));
 822  boolean (*_bfd_coff_final_link_postscript) PARAMS ((
 823        bfd * abfd,
 824        struct coff_final_link_info * pfinfo));
 825
 826 } bfd_coff_backend_data;
 827
 828 #define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 829
 830 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 831         ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 832
 833 #define bfd_coff_swap_sym_in(a,e,i) \
 834         ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 835
 836 #define bfd_coff_swap_lineno_in(a,e,i) \
 837         ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 838
 839 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 840         ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 841
 842 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 843         ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 844
 845 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 846         ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 847
 848 #define bfd_coff_swap_sym_out(abfd, i,o) \
 849         ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 850
 851 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 852         ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 853
 854 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 855         ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 856
 857 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 858         ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 859
 860 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 861 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 862 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 863 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 864 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 865 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 866 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 867 #define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 868 #define bfd_coff_long_section_names(abfd) \
 869         (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 870 #define bfd_coff_default_section_alignment_power(abfd) \
 871         (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 872 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 873         ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 874
 875 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 876         ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 877
 878 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 879         ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 880
 881 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 882         ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 883
 884 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 885         ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 886
 887 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 888         ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 889 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 890         ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
 891
 892 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
 893         ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
 894
 895 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 896         ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 897
 898 #define bfd_coff_slurp_symbol_table(abfd)\
 899         ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 900
 901 #define bfd_coff_symname_in_debug(abfd, sym)\
 902         ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 903
 904 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 905         ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 906          (abfd, file, base, symbol, aux, indaux))
 907
 908 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, 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,value,string,cp,coll,hashp)\
 937         ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 938          (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 939
 940 #define bfd_coff_link_output_has_begun(a,p) \
 941         ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
 942 #define bfd_coff_final_link_postscript(a,p) \
 943         ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
 944