bfd/libcoff.h

   1 /* BFD COFF object file private structure.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   3    2000, 2001
   4    Free Software Foundation, Inc.
   5    Written by Cygnus Support.
   6
   7 ** NOTE: libcoff.h is a GENERATED file.  Don't change it; instead,
   8 ** change libcoff-in.h or coffcode.h.
   9
  10 This file is part of BFD, the Binary File Descriptor library.
  11
  12 This program is free software; you can redistribute it and/or modify
  13 it under the terms of the GNU General Public License as published by
  14 the Free Software Foundation; either version 2 of the License, or
  15 (at your option) any later version.
  16
  17 This program is distributed in the hope that it will be useful,
  18 but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 GNU General Public License for more details.
  21
  22 You should have received a copy of the GNU General Public License
  23 along with this program; if not, write to the Free Software
  24 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  25
  26 #include "bfdlink.h"
  27
  28 /* Object file tdata; access macros */
  29
  30 #define coff_data(bfd)          ((bfd)->tdata.coff_obj_data)
  31 #define exec_hdr(bfd)           (coff_data(bfd)->hdr)
  32 #define obj_pe(bfd)             (coff_data(bfd)->pe)
  33 #define obj_symbols(bfd)        (coff_data(bfd)->symbols)
  34 #define obj_sym_filepos(bfd)    (coff_data(bfd)->sym_filepos)
  35
  36 #define obj_relocbase(bfd)      (coff_data(bfd)->relocbase)
  37 #define obj_raw_syments(bfd)    (coff_data(bfd)->raw_syments)
  38 #define obj_raw_syment_count(bfd)       (coff_data(bfd)->raw_syment_count)
  39 #define obj_convert(bfd)        (coff_data(bfd)->conversion_table)
  40 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
  41
  42 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
  43 #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
  44 #define obj_coff_strings(bfd)   (coff_data (bfd)->strings)
  45 #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
  46 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
  47 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  48
  49 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
  50
  51 /* `Tdata' information kept for COFF files.  */
  52
  53 typedef struct coff_tdata
  54 {
  55   struct   coff_symbol_struct *symbols; /* symtab for input bfd */
  56   unsigned int *conversion_table;
  57   int conv_table_size;
  58   file_ptr sym_filepos;
  59
  60   struct coff_ptr_struct *raw_syments;
  61   unsigned long raw_syment_count;
  62
  63   /* These are only valid once writing has begun */
  64   long int relocbase;
  65
  66   /* These members communicate important constants about the symbol table
  67      to GDB's symbol-reading code.  These `constants' unfortunately vary
  68      from coff implementation to implementation...  */
  69   unsigned local_n_btmask;
  70   unsigned local_n_btshft;
  71   unsigned local_n_tmask;
  72   unsigned local_n_tshift;
  73   unsigned local_symesz;
  74   unsigned local_auxesz;
  75   unsigned local_linesz;
  76
  77   /* The unswapped external symbols.  May be NULL.  Read by
  78      _bfd_coff_get_external_symbols.  */
  79   PTR external_syms;
  80   /* If this is true, the external_syms may not be freed.  */
  81   boolean keep_syms;
  82
  83   /* The string table.  May be NULL.  Read by
  84      _bfd_coff_read_string_table.  */
  85   char *strings;
  86   /* If this is true, the strings may not be freed.  */
  87   boolean keep_strings;
  88   /* If this is true, the strings have been written out already.  */
  89   boolean strings_written;
  90
  91   /* is this a PE format coff file */
  92   int pe;
  93   /* Used by the COFF backend linker.  */
  94   struct coff_link_hash_entry **sym_hashes;
  95
  96   /* used by the pe linker for PowerPC */
  97   int *local_toc_sym_map;
  98
  99   struct bfd_link_info *link_info;
 100
 101   /* Used by coff_find_nearest_line.  */
 102   PTR line_info;
 103
 104   /* A place to stash dwarf2 info for this bfd. */
 105   PTR dwarf2_find_line_info;
 106
 107   /* The timestamp from the COFF file header.  */
 108   long timestamp;
 109
 110   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 111      used by ARM code.  */
 112   flagword flags;
 113
 114 } coff_data_type;
 115
 116 /* Tdata for pe image files. */
 117 typedef struct pe_tdata
 118 {
 119   coff_data_type coff;
 120   struct internal_extra_pe_aouthdr pe_opthdr;
 121   int dll;
 122   int has_reloc_section;
 123   boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
 124   flagword real_flags;
 125   int target_subsystem;
 126   boolean force_minimum_alignment;
 127 } pe_data_type;
 128
 129 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 130
 131 /* Tdata for XCOFF files.  */
 132
 133 struct xcoff_tdata
 134 {
 135   /* Basic COFF information.  */
 136   coff_data_type coff;
 137
 138   /* True if this is an XCOFF64 file. */
 139   boolean xcoff64;
 140
 141   /* True if a large a.out header should be generated.  */
 142   boolean full_aouthdr;
 143
 144   /* TOC value.  */
 145   bfd_vma toc;
 146
 147   /* Index of section holding TOC.  */
 148   int sntoc;
 149
 150   /* Index of section holding entry point.  */
 151   int snentry;
 152
 153   /* .text alignment from optional header.  */
 154   int text_align_power;
 155
 156   /* .data alignment from optional header.  */
 157   int data_align_power;
 158
 159   /* modtype from optional header.  */
 160   short modtype;
 161
 162   /* cputype from optional header.  */
 163   short cputype;
 164
 165   /* maxdata from optional header.  */
 166   bfd_size_type maxdata;
 167
 168   /* maxstack from optional header.  */
 169   bfd_size_type maxstack;
 170
 171   /* Used by the XCOFF backend linker.  */
 172   asection **csects;
 173   unsigned long *debug_indices;
 174   unsigned int import_file_id;
 175 };
 176
 177 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 178
 179 /* We take the address of the first element of a asymbol to ensure that the
 180  * macro is only ever applied to an asymbol.  */
 181 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 182
 183 /* The used_by_bfd field of a section may be set to a pointer to this
 184    structure.  */
 185
 186 struct coff_section_tdata
 187 {
 188   /* The relocs, swapped into COFF internal form.  This may be NULL.  */
 189   struct internal_reloc *relocs;
 190   /* If this is true, the relocs entry may not be freed.  */
 191   boolean keep_relocs;
 192   /* The section contents.  This may be NULL.  */
 193   bfd_byte *contents;
 194   /* If this is true, the contents entry may not be freed.  */
 195   boolean keep_contents;
 196   /* Information cached by coff_find_nearest_line.  */
 197   bfd_vma offset;
 198   unsigned int i;
 199   const char *function;
 200   int line_base;
 201   /* A pointer used for .stab linking optimizations.  */
 202   PTR stab_info;
 203   /* Available for individual backends.  */
 204   PTR tdata;
 205 };
 206
 207 /* An accessor macro for the coff_section_tdata structure.  */
 208 #define coff_section_data(abfd, sec) \
 209   ((struct coff_section_tdata *) (sec)->used_by_bfd)
 210
 211 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 212
 213 struct xcoff_section_tdata
 214 {
 215   /* Used for XCOFF csects created by the linker; points to the real
 216      XCOFF section which contains this csect.  */
 217   asection *enclosing;
 218   /* The lineno_count field for the enclosing section, because we are
 219      going to clobber it there.  */
 220   unsigned int lineno_count;
 221   /* The first and one past the last symbol indices for symbols used
 222      by this csect.  */
 223   unsigned long first_symndx;
 224   unsigned long last_symndx;
 225 };
 226
 227 /* An accessor macro the xcoff_section_tdata structure.  */
 228 #define xcoff_section_data(abfd, sec) \
 229   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 230
 231 /* Tdata for sections in PE files.  */
 232
 233 struct pei_section_tdata
 234 {
 235   /* The virtual size of the section.  */
 236   bfd_size_type virt_size;
 237   /* The PE section flags.  */
 238   long pe_flags;
 239 };
 240
 241 /* An accessor macro for the pei_section_tdata structure.  */
 242 #define pei_section_data(abfd, sec) \
 243   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 244
 245 /* COFF linker hash table entries.  */
 246
 247 struct coff_link_hash_entry
 248 {
 249   struct bfd_link_hash_entry root;
 250
 251   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 252      there is a reloc against this symbol.  */
 253   long indx;
 254
 255   /* Symbol type.  */
 256   unsigned short type;
 257
 258   /* Symbol class.  */
 259   unsigned char class;
 260
 261   /* Number of auxiliary entries.  */
 262   char numaux;
 263
 264   /* BFD to take auxiliary entries from.  */
 265   bfd *auxbfd;
 266
 267   /* Pointer to array of auxiliary entries, if any.  */
 268   union internal_auxent *aux;
 269
 270   /* Flag word; legal values follow.  */
 271   unsigned short coff_link_hash_flags;
 272   /* Symbol is a PE section symbol.  */
 273 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 274 };
 275
 276 /* COFF linker hash table.  */
 277
 278 struct coff_link_hash_table
 279 {
 280   struct bfd_link_hash_table root;
 281   /* A pointer to information used to link stabs in sections.  */
 282   PTR stab_info;
 283 };
 284
 285 /* Look up an entry in a COFF linker hash table.  */
 286
 287 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 288   ((struct coff_link_hash_entry *)                                      \
 289    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 290                          (copy), (follow)))
 291
 292 /* Traverse a COFF linker hash table.  */
 293
 294 #define coff_link_hash_traverse(table, func, info)                      \
 295   (bfd_link_hash_traverse                                               \
 296    (&(table)->root,                                                     \
 297     (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
 298     (info)))
 299
 300 /* Get the COFF linker hash table from a link_info structure.  */
 301
 302 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 303
 304 /* Functions in coffgen.c.  */
 305 extern const bfd_target *coff_object_p PARAMS ((bfd *));
 306 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
 307 extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
 308 extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
 309 extern int coff_count_linenumbers PARAMS ((bfd *));
 310 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
 311 extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
 312 extern void coff_mangle_symbols PARAMS ((bfd *));
 313 extern boolean coff_write_symbols PARAMS ((bfd *));
 314 extern boolean coff_write_linenumbers PARAMS ((bfd *));
 315 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
 316 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
 317 extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
 318 extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
 319 extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
 320 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
 321 extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
 322 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
 323 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
 324                                        bfd_print_symbol_type how));
 325 extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
 326                                           symbol_info *ret));
 327 extern boolean _bfd_coff_is_local_label_name PARAMS ((bfd *, const char *));
 328 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
 329                                                     unsigned long));
 330 extern boolean coff_find_nearest_line PARAMS ((bfd *,
 331                                                asection *,
 332                                                asymbol **,
 333                                                bfd_vma offset,
 334                                                CONST char **filename_ptr,
 335                                                CONST char **functionname_ptr,
 336                                                unsigned int *line_ptr));
 337 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
 338 extern boolean bfd_coff_reloc16_relax_section
 339   PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
 340 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 341   PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
 342            bfd_byte *, boolean relocateable, asymbol **));
 343 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
 344                                                    struct bfd_link_info *,
 345                                                    asection *));
 346 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
 347                                       asection *input_section,
 348                                       bfd_vma val));
 349
 350 /* Functions and types in cofflink.c.  */
 351
 352 #define STRING_SIZE_SIZE (4)
 353
 354 /* We use a hash table to merge identical enum, struct, and union
 355    definitions in the linker.  */
 356
 357 /* Information we keep for a single element (an enum value, a
 358    structure or union field) in the debug merge hash table.  */
 359
 360 struct coff_debug_merge_element
 361 {
 362   /* Next element.  */
 363   struct coff_debug_merge_element *next;
 364
 365   /* Name.  */
 366   const char *name;
 367
 368   /* Type.  */
 369   unsigned int type;
 370
 371   /* Symbol index for complex type.  */
 372   long tagndx;
 373 };
 374
 375 /* A linked list of debug merge entries for a given name.  */
 376
 377 struct coff_debug_merge_type
 378 {
 379   /* Next type with the same name.  */
 380   struct coff_debug_merge_type *next;
 381
 382   /* Class of type.  */
 383   int class;
 384
 385   /* Symbol index where this type is defined.  */
 386   long indx;
 387
 388   /* List of elements.  */
 389   struct coff_debug_merge_element *elements;
 390 };
 391
 392 /* Information we store in the debug merge hash table.  */
 393
 394 struct coff_debug_merge_hash_entry
 395 {
 396   struct bfd_hash_entry root;
 397
 398   /* A list of types with this name.  */
 399   struct coff_debug_merge_type *types;
 400 };
 401
 402 /* The debug merge hash table.  */
 403
 404 struct coff_debug_merge_hash_table
 405 {
 406   struct bfd_hash_table root;
 407 };
 408
 409 /* Initialize a COFF debug merge hash table.  */
 410
 411 #define coff_debug_merge_hash_table_init(table) \
 412   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
 413
 414 /* Free a COFF debug merge hash table.  */
 415
 416 #define coff_debug_merge_hash_table_free(table) \
 417   (bfd_hash_table_free (&(table)->root))
 418
 419 /* Look up an entry in a COFF debug merge hash table.  */
 420
 421 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 422   ((struct coff_debug_merge_hash_entry *) \
 423    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 424
 425 /* Information we keep for each section in the output file when doing
 426    a relocateable link.  */
 427
 428 struct coff_link_section_info
 429 {
 430   /* The relocs to be output.  */
 431   struct internal_reloc *relocs;
 432   /* For each reloc against a global symbol whose index was not known
 433      when the reloc was handled, the global hash table entry.  */
 434   struct coff_link_hash_entry **rel_hashes;
 435 };
 436
 437 /* Information that we pass around while doing the final link step.  */
 438
 439 struct coff_final_link_info
 440 {
 441   /* General link information.  */
 442   struct bfd_link_info *info;
 443   /* Output BFD.  */
 444   bfd *output_bfd;
 445   /* Used to indicate failure in traversal routine.  */
 446   boolean failed;
 447   /* If doing "task linking" set only during the time when we want the
 448      global symbol writer to convert the storage class of defined global
 449      symbols from global to static. */
 450   boolean global_to_static;
 451   /* Hash table for long symbol names.  */
 452   struct bfd_strtab_hash *strtab;
 453   /* When doing a relocateable link, an array of information kept for
 454      each output section, indexed by the target_index field.  */
 455   struct coff_link_section_info *section_info;
 456   /* Symbol index of last C_FILE symbol (-1 if none).  */
 457   long last_file_index;
 458   /* Contents of last C_FILE symbol.  */
 459   struct internal_syment last_file;
 460   /* Symbol index of first aux entry of last .bf symbol with an empty
 461      endndx field (-1 if none).  */
 462   long last_bf_index;
 463   /* Contents of last_bf_index aux entry.  */
 464   union internal_auxent last_bf;
 465   /* Hash table used to merge debug information.  */
 466   struct coff_debug_merge_hash_table debug_merge;
 467   /* Buffer large enough to hold swapped symbols of any input file.  */
 468   struct internal_syment *internal_syms;
 469   /* Buffer large enough to hold sections of symbols of any input file.  */
 470   asection **sec_ptrs;
 471   /* Buffer large enough to hold output indices of symbols of any
 472      input file.  */
 473   long *sym_indices;
 474   /* Buffer large enough to hold output symbols for any input file.  */
 475   bfd_byte *outsyms;
 476   /* Buffer large enough to hold external line numbers for any input
 477      section.  */
 478   bfd_byte *linenos;
 479   /* Buffer large enough to hold any input section.  */
 480   bfd_byte *contents;
 481   /* Buffer large enough to hold external relocs of any input section.  */
 482   bfd_byte *external_relocs;
 483   /* Buffer large enough to hold swapped relocs of any input section.  */
 484   struct internal_reloc *internal_relocs;
 485 };
 486
 487 /* Most COFF variants have no way to record the alignment of a
 488    section.  This struct is used to set a specific alignment based on
 489    the name of the section.  */
 490
 491 struct coff_section_alignment_entry
 492 {
 493   /* The section name.  */
 494   const char *name;
 495
 496   /* This is either (unsigned int) -1, indicating that the section
 497      name must match exactly, or it is the number of letters which
 498      must match at the start of the name.  */
 499   unsigned int comparison_length;
 500
 501   /* These macros may be used to fill in the first two fields in a
 502      structure initialization.  */
 503 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 504 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 505
 506   /* Only use this entry if the default section alignment for this
 507      target is at least that much (as a power of two).  If this field
 508      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 509   unsigned int default_alignment_min;
 510
 511   /* Only use this entry if the default section alignment for this
 512      target is no greater than this (as a power of two).  If this
 513      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 514   unsigned int default_alignment_max;
 515
 516 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 517
 518   /* The desired alignment for this section (as a power of two).  */
 519   unsigned int alignment_power;
 520 };
 521
 522 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 523   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 524 extern boolean _bfd_coff_link_hash_table_init
 525   PARAMS ((struct coff_link_hash_table *, bfd *,
 526            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 527                                        struct bfd_hash_table *,
 528                                        const char *)));
 529 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 530   PARAMS ((bfd *));
 531 extern const char *_bfd_coff_internal_syment_name
 532   PARAMS ((bfd *, const struct internal_syment *, char *));
 533 extern boolean _bfd_coff_link_add_symbols
 534   PARAMS ((bfd *, struct bfd_link_info *));
 535 extern boolean _bfd_coff_final_link
 536   PARAMS ((bfd *, struct bfd_link_info *));
 537 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 538   PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
 539            struct internal_reloc *));
 540 extern boolean _bfd_coff_generic_relocate_section
 541   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 542            struct internal_reloc *, struct internal_syment *, asection **));
 543
 544 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 545   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 546 extern boolean _bfd_coff_write_global_sym
 547   PARAMS ((struct coff_link_hash_entry *, PTR));
 548 extern boolean _bfd_coff_write_task_globals
 549   PARAMS ((struct coff_link_hash_entry *, PTR));
 550 extern boolean _bfd_coff_link_input_bfd
 551   PARAMS ((struct coff_final_link_info *, bfd *));
 552 extern boolean _bfd_coff_reloc_link_order
 553   PARAMS ((bfd *, struct coff_final_link_info *, asection *,
 554            struct bfd_link_order *));
 555
 556
 557 #define coff_get_section_contents_in_window \
 558   _bfd_generic_get_section_contents_in_window
 559
 560 /* Functions in xcofflink.c.  */
 561
 562 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 563 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 564   PARAMS ((bfd *, asymbol **));
 565 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
 566 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 567   PARAMS ((bfd *, arelent **, asymbol **));
 568 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 569   PARAMS ((bfd *));
 570 extern boolean _bfd_xcoff_bfd_link_add_symbols
 571   PARAMS ((bfd *, struct bfd_link_info *));
 572 extern boolean _bfd_xcoff_bfd_final_link
 573   PARAMS ((bfd *, struct bfd_link_info *));
 574 extern boolean _bfd_ppc_xcoff_relocate_section
 575   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 576            struct internal_reloc *, struct internal_syment *, asection **));
 577
 578 /* Functions in coff-ppc.c.  FIXME: These are called be pe.em in the
 579    linker, and so should start with bfd and be declared in bfd.h.  */
 580
 581 extern boolean ppc_allocate_toc_section PARAMS ((struct bfd_link_info *));
 582 extern boolean ppc_process_before_allocation
 583   PARAMS ((bfd *, struct bfd_link_info *));
 584
 585 /* And more taken from the source .. */
 586
 587 typedef struct coff_ptr_struct
 588 {
 589
 590        /* Remembers the offset from the first symbol in the file for
 591           this symbol. Generated by coff_renumber_symbols. */
 592 unsigned int offset;
 593
 594        /* Should the value of this symbol be renumbered.  Used for
 595           XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 596 unsigned int fix_value : 1;
 597
 598        /* Should the tag field of this symbol be renumbered.
 599           Created by coff_pointerize_aux. */
 600 unsigned int fix_tag : 1;
 601
 602        /* Should the endidx field of this symbol be renumbered.
 603           Created by coff_pointerize_aux. */
 604 unsigned int fix_end : 1;
 605
 606        /* Should the x_csect.x_scnlen field be renumbered.
 607           Created by coff_pointerize_aux. */
 608 unsigned int fix_scnlen : 1;
 609
 610        /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 611           index into the line number entries.  Set by
 612           coff_slurp_symbol_table.  */
 613 unsigned int fix_line : 1;
 614
 615        /* The container for the symbol structure as read and translated
 616            from the file. */
 617
 618 union {
 619    union internal_auxent auxent;
 620    struct internal_syment syment;
 621  } u;
 622 } combined_entry_type;
 623
 624
 625 /* Each canonical asymbol really looks like this: */
 626
 627 typedef struct coff_symbol_struct
 628 {
 629    /* The actual symbol which the rest of BFD works with */
 630 asymbol symbol;
 631
 632    /* A pointer to the hidden information for this symbol */
 633 combined_entry_type *native;
 634
 635    /* A pointer to the linenumber information for this symbol */
 636 struct lineno_cache_entry *lineno;
 637
 638    /* Have the line numbers been relocated yet ? */
 639 boolean done_lineno;
 640 } coff_symbol_type;
 641 /* COFF symbol classifications.  */
 642
 643 enum coff_symbol_classification
 644 {
 645   /* Global symbol.  */
 646   COFF_SYMBOL_GLOBAL,
 647   /* Common symbol.  */
 648   COFF_SYMBOL_COMMON,
 649   /* Undefined symbol.  */
 650   COFF_SYMBOL_UNDEFINED,
 651   /* Local symbol.  */
 652   COFF_SYMBOL_LOCAL,
 653   /* PE section symbol.  */
 654   COFF_SYMBOL_PE_SECTION
 655 };
 656
 657 typedef struct
 658 {
 659   void (*_bfd_coff_swap_aux_in) PARAMS ((
 660        bfd            *abfd,
 661        PTR             ext,
 662        int             type,
 663        int             class,
 664        int             indaux,
 665        int             numaux,
 666        PTR             in));
 667
 668   void (*_bfd_coff_swap_sym_in) PARAMS ((
 669        bfd            *abfd ,
 670        PTR             ext,
 671        PTR             in));
 672
 673   void (*_bfd_coff_swap_lineno_in) PARAMS ((
 674        bfd            *abfd,
 675        PTR            ext,
 676        PTR             in));
 677
 678  unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
 679        bfd     *abfd,
 680        PTR     in,
 681        int     type,
 682        int     class,
 683        int     indaux,
 684        int     numaux,
 685        PTR     ext));
 686
 687  unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
 688       bfd      *abfd,
 689       PTR      in,
 690       PTR      ext));
 691
 692  unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
 693        bfd     *abfd,
 694        PTR     in,
 695        PTR     ext));
 696
 697  unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
 698        bfd     *abfd,
 699        PTR     src,
 700        PTR     dst));
 701
 702  unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
 703        bfd     *abfd,
 704        PTR     in,
 705        PTR     out));
 706
 707  unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
 708        bfd     *abfd,
 709        PTR     in,
 710        PTR     out));
 711
 712  unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
 713        bfd     *abfd,
 714        PTR     in,
 715        PTR     out));
 716
 717  unsigned int _bfd_filhsz;
 718  unsigned int _bfd_aoutsz;
 719  unsigned int _bfd_scnhsz;
 720  unsigned int _bfd_symesz;
 721  unsigned int _bfd_auxesz;
 722  unsigned int _bfd_relsz;
 723  unsigned int _bfd_linesz;
 724  unsigned int _bfd_filnmlen;
 725  boolean _bfd_coff_long_filenames;
 726  boolean _bfd_coff_long_section_names;
 727  unsigned int _bfd_coff_default_section_alignment_power;
 728  boolean _bfd_coff_force_symnames_in_strings;
 729  unsigned int _bfd_coff_debug_string_prefix_length;
 730  void (*_bfd_coff_swap_filehdr_in) PARAMS ((
 731        bfd     *abfd,
 732        PTR     ext,
 733        PTR     in));
 734  void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
 735        bfd     *abfd,
 736        PTR     ext,
 737        PTR     in));
 738  void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
 739        bfd     *abfd,
 740        PTR     ext,
 741        PTR     in));
 742  void (*_bfd_coff_swap_reloc_in) PARAMS ((
 743        bfd     *abfd,
 744        PTR     ext,
 745        PTR     in));
 746  boolean (*_bfd_coff_bad_format_hook) PARAMS ((
 747        bfd     *abfd,
 748        PTR     internal_filehdr));
 749  boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
 750        bfd     *abfd,
 751        PTR     internal_filehdr));
 752  PTR (*_bfd_coff_mkobject_hook) PARAMS ((
 753        bfd     *abfd,
 754        PTR     internal_filehdr,
 755        PTR     internal_aouthdr));
 756  flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
 757        bfd     *abfd,
 758        PTR     internal_scnhdr,
 759        const char *name,
 760        asection *section));
 761  void (*_bfd_set_alignment_hook) PARAMS ((
 762        bfd     *abfd,
 763        asection *sec,
 764        PTR     internal_scnhdr));
 765  boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
 766        bfd     *abfd));
 767  boolean (*_bfd_coff_symname_in_debug) PARAMS ((
 768        bfd     *abfd,
 769        struct internal_syment *sym));
 770  boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
 771        bfd *abfd,
 772        combined_entry_type *table_base,
 773        combined_entry_type *symbol,
 774        unsigned int indaux,
 775        combined_entry_type *aux));
 776  boolean (*_bfd_coff_print_aux) PARAMS ((
 777        bfd *abfd,
 778        FILE *file,
 779        combined_entry_type *table_base,
 780        combined_entry_type *symbol,
 781        combined_entry_type *aux,
 782        unsigned int indaux));
 783  void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
 784        bfd     *abfd,
 785        struct bfd_link_info *link_info,
 786        struct bfd_link_order *link_order,
 787        arelent *reloc,
 788        bfd_byte *data,
 789        unsigned int *src_ptr,
 790        unsigned int *dst_ptr));
 791  int (*_bfd_coff_reloc16_estimate) PARAMS ((
 792        bfd *abfd,
 793        asection *input_section,
 794        arelent *r,
 795        unsigned int shrink,
 796        struct bfd_link_info *link_info));
 797  enum coff_symbol_classification (*_bfd_coff_classify_symbol) PARAMS ((
 798        bfd *abfd,
 799        struct internal_syment *));
 800  boolean (*_bfd_coff_compute_section_file_positions) PARAMS ((
 801        bfd *abfd));
 802  boolean (*_bfd_coff_start_final_link) PARAMS ((
 803        bfd *output_bfd,
 804        struct bfd_link_info *info));
 805  boolean (*_bfd_coff_relocate_section) PARAMS ((
 806        bfd *output_bfd,
 807        struct bfd_link_info *info,
 808        bfd *input_bfd,
 809        asection *input_section,
 810        bfd_byte *contents,
 811        struct internal_reloc *relocs,
 812        struct internal_syment *syms,
 813        asection **sections));
 814  reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
 815        bfd *abfd,
 816        asection *sec,
 817        struct internal_reloc *rel,
 818        struct coff_link_hash_entry *h,
 819        struct internal_syment *sym,
 820        bfd_vma *addendp));
 821  boolean (*_bfd_coff_adjust_symndx) PARAMS ((
 822        bfd *obfd,
 823        struct bfd_link_info *info,
 824        bfd *ibfd,
 825        asection *sec,
 826        struct internal_reloc *reloc,
 827        boolean *adjustedp));
 828  boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
 829        struct bfd_link_info *info,
 830        bfd *abfd,
 831        const char *name,
 832        flagword flags,
 833        asection *section,
 834        bfd_vma value,
 835        const char *string,
 836        boolean copy,
 837        boolean collect,
 838        struct bfd_link_hash_entry **hashp));
 839
 840  boolean (*_bfd_coff_link_output_has_begun) PARAMS ((
 841        bfd * abfd,
 842        struct coff_final_link_info * pfinfo));
 843  boolean (*_bfd_coff_final_link_postscript) PARAMS ((
 844        bfd * abfd,
 845        struct coff_final_link_info * pfinfo));
 846
 847 } bfd_coff_backend_data;
 848
 849 #define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 850
 851 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 852         ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 853
 854 #define bfd_coff_swap_sym_in(a,e,i) \
 855         ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 856
 857 #define bfd_coff_swap_lineno_in(a,e,i) \
 858         ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 859
 860 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 861         ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 862
 863 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 864         ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 865
 866 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 867         ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 868
 869 #define bfd_coff_swap_sym_out(abfd, i,o) \
 870         ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 871
 872 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 873         ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 874
 875 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 876         ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 877
 878 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 879         ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 880
 881 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 882 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 883 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 884 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 885 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 886 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 887 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 888 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 889 #define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 890 #define bfd_coff_long_section_names(abfd) \
 891         (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 892 #define bfd_coff_default_section_alignment_power(abfd) \
 893         (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 894 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 895         ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 896
 897 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 898         ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 899
 900 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 901         ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 902
 903 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 904         ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 905
 906 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 907         ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 908
 909 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 910         ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 911 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 912         ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
 913
 914 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section)\
 915         ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 916          (abfd, scnhdr, name, section))
 917
 918 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 919         ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 920
 921 #define bfd_coff_slurp_symbol_table(abfd)\
 922         ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 923
 924 #define bfd_coff_symname_in_debug(abfd, sym)\
 925         ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 926
 927 #define bfd_coff_force_symnames_in_strings(abfd)\
 928        (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 929
 930 #define bfd_coff_debug_string_prefix_length(abfd)\
 931        (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 932
 933 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 934         ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 935          (abfd, file, base, symbol, aux, indaux))
 936
 937 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
 938         ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 939          (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 940
 941 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 942         ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 943          (abfd, section, reloc, shrink, link_info))
 944
 945 #define bfd_coff_classify_symbol(abfd, sym)\
 946         ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 947          (abfd, sym))
 948
 949 #define bfd_coff_compute_section_file_positions(abfd)\
 950         ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 951          (abfd))
 952
 953 #define bfd_coff_start_final_link(obfd, info)\
 954         ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 955          (obfd, info))
 956 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
 957         ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
 958          (obfd, info, ibfd, o, con, rel, isyms, secs))
 959 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
 960         ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
 961          (abfd, sec, rel, h, sym, addendp))
 962 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
 963         ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
 964          (obfd, info, ibfd, sec, rel, adjustedp))
 965 #define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
 966         ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 967          (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 968
 969 #define bfd_coff_link_output_has_begun(a,p) \
 970         ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
 971 #define bfd_coff_final_link_postscript(a,p) \
 972         ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
 973