bfd/libcoff.h

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