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_vma maxdata;
 167
 168   /* maxstack from optional header.  */
 169   bfd_vma 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
 306   PARAMS ((bfd *));
 307 extern struct sec *coff_section_from_bfd_index
 308   PARAMS ((bfd *, int));
 309 extern long coff_get_symtab_upper_bound
 310   PARAMS ((bfd *));
 311 extern long coff_get_symtab
 312   PARAMS ((bfd *, asymbol **));
 313 extern int coff_count_linenumbers
 314   PARAMS ((bfd *));
 315 extern struct coff_symbol_struct *coff_symbol_from
 316   PARAMS ((bfd *, asymbol *));
 317 extern boolean coff_renumber_symbols
 318   PARAMS ((bfd *, int *));
 319 extern void coff_mangle_symbols
 320   PARAMS ((bfd *));
 321 extern boolean coff_write_symbols
 322   PARAMS ((bfd *));
 323 extern boolean coff_write_linenumbers
 324   PARAMS ((bfd *));
 325 extern alent *coff_get_lineno
 326   PARAMS ((bfd *, asymbol *));
 327 extern asymbol *coff_section_symbol
 328   PARAMS ((bfd *, char *));
 329 extern boolean _bfd_coff_get_external_symbols
 330   PARAMS ((bfd *));
 331 extern const char *_bfd_coff_read_string_table
 332   PARAMS ((bfd *));
 333 extern boolean _bfd_coff_free_symbols
 334   PARAMS ((bfd *));
 335 extern struct coff_ptr_struct *coff_get_normalized_symtab
 336   PARAMS ((bfd *));
 337 extern long coff_get_reloc_upper_bound
 338   PARAMS ((bfd *, sec_ptr));
 339 extern asymbol *coff_make_empty_symbol
 340   PARAMS ((bfd *));
 341 extern void coff_print_symbol
 342   PARAMS ((bfd *, PTR filep, asymbol *, bfd_print_symbol_type));
 343 extern void coff_get_symbol_info
 344   PARAMS ((bfd *, asymbol *, symbol_info *ret));
 345 extern boolean _bfd_coff_is_local_label_name
 346   PARAMS ((bfd *, const char *));
 347 extern asymbol *coff_bfd_make_debug_symbol
 348   PARAMS ((bfd *, PTR, unsigned long));
 349 extern boolean coff_find_nearest_line
 350   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 351            const char **, unsigned int *));
 352 extern int coff_sizeof_headers
 353   PARAMS ((bfd *, boolean));
 354 extern boolean bfd_coff_reloc16_relax_section
 355   PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
 356 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 357   PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
 358            bfd_byte *, boolean, asymbol **));
 359 extern bfd_vma bfd_coff_reloc16_get_value
 360    PARAMS ((arelent *, struct bfd_link_info *, asection *));
 361 extern void bfd_perform_slip
 362   PARAMS ((bfd *, unsigned int, asection *, bfd_vma));
 363
 364 /* Functions and types in cofflink.c.  */
 365
 366 #define STRING_SIZE_SIZE (4)
 367
 368 /* We use a hash table to merge identical enum, struct, and union
 369    definitions in the linker.  */
 370
 371 /* Information we keep for a single element (an enum value, a
 372    structure or union field) in the debug merge hash table.  */
 373
 374 struct coff_debug_merge_element
 375 {
 376   /* Next element.  */
 377   struct coff_debug_merge_element *next;
 378
 379   /* Name.  */
 380   const char *name;
 381
 382   /* Type.  */
 383   unsigned int type;
 384
 385   /* Symbol index for complex type.  */
 386   long tagndx;
 387 };
 388
 389 /* A linked list of debug merge entries for a given name.  */
 390
 391 struct coff_debug_merge_type
 392 {
 393   /* Next type with the same name.  */
 394   struct coff_debug_merge_type *next;
 395
 396   /* Class of type.  */
 397   int class;
 398
 399   /* Symbol index where this type is defined.  */
 400   long indx;
 401
 402   /* List of elements.  */
 403   struct coff_debug_merge_element *elements;
 404 };
 405
 406 /* Information we store in the debug merge hash table.  */
 407
 408 struct coff_debug_merge_hash_entry
 409 {
 410   struct bfd_hash_entry root;
 411
 412   /* A list of types with this name.  */
 413   struct coff_debug_merge_type *types;
 414 };
 415
 416 /* The debug merge hash table.  */
 417
 418 struct coff_debug_merge_hash_table
 419 {
 420   struct bfd_hash_table root;
 421 };
 422
 423 /* Initialize a COFF debug merge hash table.  */
 424
 425 #define coff_debug_merge_hash_table_init(table) \
 426   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
 427
 428 /* Free a COFF debug merge hash table.  */
 429
 430 #define coff_debug_merge_hash_table_free(table) \
 431   (bfd_hash_table_free (&(table)->root))
 432
 433 /* Look up an entry in a COFF debug merge hash table.  */
 434
 435 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 436   ((struct coff_debug_merge_hash_entry *) \
 437    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 438
 439 /* Information we keep for each section in the output file when doing
 440    a relocateable link.  */
 441
 442 struct coff_link_section_info
 443 {
 444   /* The relocs to be output.  */
 445   struct internal_reloc *relocs;
 446   /* For each reloc against a global symbol whose index was not known
 447      when the reloc was handled, the global hash table entry.  */
 448   struct coff_link_hash_entry **rel_hashes;
 449 };
 450
 451 /* Information that we pass around while doing the final link step.  */
 452
 453 struct coff_final_link_info
 454 {
 455   /* General link information.  */
 456   struct bfd_link_info *info;
 457   /* Output BFD.  */
 458   bfd *output_bfd;
 459   /* Used to indicate failure in traversal routine.  */
 460   boolean failed;
 461   /* If doing "task linking" set only during the time when we want the
 462      global symbol writer to convert the storage class of defined global
 463      symbols from global to static. */
 464   boolean global_to_static;
 465   /* Hash table for long symbol names.  */
 466   struct bfd_strtab_hash *strtab;
 467   /* When doing a relocateable link, an array of information kept for
 468      each output section, indexed by the target_index field.  */
 469   struct coff_link_section_info *section_info;
 470   /* Symbol index of last C_FILE symbol (-1 if none).  */
 471   long last_file_index;
 472   /* Contents of last C_FILE symbol.  */
 473   struct internal_syment last_file;
 474   /* Symbol index of first aux entry of last .bf symbol with an empty
 475      endndx field (-1 if none).  */
 476   long last_bf_index;
 477   /* Contents of last_bf_index aux entry.  */
 478   union internal_auxent last_bf;
 479   /* Hash table used to merge debug information.  */
 480   struct coff_debug_merge_hash_table debug_merge;
 481   /* Buffer large enough to hold swapped symbols of any input file.  */
 482   struct internal_syment *internal_syms;
 483   /* Buffer large enough to hold sections of symbols of any input file.  */
 484   asection **sec_ptrs;
 485   /* Buffer large enough to hold output indices of symbols of any
 486      input file.  */
 487   long *sym_indices;
 488   /* Buffer large enough to hold output symbols for any input file.  */
 489   bfd_byte *outsyms;
 490   /* Buffer large enough to hold external line numbers for any input
 491      section.  */
 492   bfd_byte *linenos;
 493   /* Buffer large enough to hold any input section.  */
 494   bfd_byte *contents;
 495   /* Buffer large enough to hold external relocs of any input section.  */
 496   bfd_byte *external_relocs;
 497   /* Buffer large enough to hold swapped relocs of any input section.  */
 498   struct internal_reloc *internal_relocs;
 499 };
 500
 501 /* Most COFF variants have no way to record the alignment of a
 502    section.  This struct is used to set a specific alignment based on
 503    the name of the section.  */
 504
 505 struct coff_section_alignment_entry
 506 {
 507   /* The section name.  */
 508   const char *name;
 509
 510   /* This is either (unsigned int) -1, indicating that the section
 511      name must match exactly, or it is the number of letters which
 512      must match at the start of the name.  */
 513   unsigned int comparison_length;
 514
 515   /* These macros may be used to fill in the first two fields in a
 516      structure initialization.  */
 517 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 518 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 519
 520   /* Only use this entry if the default section alignment for this
 521      target is at least that much (as a power of two).  If this field
 522      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 523   unsigned int default_alignment_min;
 524
 525   /* Only use this entry if the default section alignment for this
 526      target is no greater than this (as a power of two).  If this
 527      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 528   unsigned int default_alignment_max;
 529
 530 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 531
 532   /* The desired alignment for this section (as a power of two).  */
 533   unsigned int alignment_power;
 534 };
 535
 536 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 537   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 538 extern boolean _bfd_coff_link_hash_table_init
 539   PARAMS ((struct coff_link_hash_table *, bfd *,
 540            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 541                                        struct bfd_hash_table *,
 542                                        const char *)));
 543 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 544   PARAMS ((bfd *));
 545 extern const char *_bfd_coff_internal_syment_name
 546   PARAMS ((bfd *, const struct internal_syment *, char *));
 547 extern boolean _bfd_coff_link_add_symbols
 548   PARAMS ((bfd *, struct bfd_link_info *));
 549 extern boolean _bfd_coff_final_link
 550   PARAMS ((bfd *, struct bfd_link_info *));
 551 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 552   PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
 553            struct internal_reloc *));
 554 extern boolean _bfd_coff_generic_relocate_section
 555   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 556            struct internal_reloc *, struct internal_syment *, asection **));
 557
 558 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 559   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 560 extern boolean _bfd_coff_write_global_sym
 561   PARAMS ((struct coff_link_hash_entry *, PTR));
 562 extern boolean _bfd_coff_write_task_globals
 563   PARAMS ((struct coff_link_hash_entry *, PTR));
 564 extern boolean _bfd_coff_link_input_bfd
 565   PARAMS ((struct coff_final_link_info *, bfd *));
 566 extern boolean _bfd_coff_reloc_link_order
 567   PARAMS ((bfd *, struct coff_final_link_info *, asection *,
 568            struct bfd_link_order *));
 569
 570
 571 #define coff_get_section_contents_in_window \
 572   _bfd_generic_get_section_contents_in_window
 573
 574 /* Functions in xcofflink.c.  */
 575
 576 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 577   PARAMS ((bfd *));
 578 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 579   PARAMS ((bfd *, asymbol **));
 580 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 581   PARAMS ((bfd *));
 582 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 583   PARAMS ((bfd *, arelent **, asymbol **));
 584 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 585   PARAMS ((bfd *));
 586 extern boolean _bfd_xcoff_bfd_link_add_symbols
 587   PARAMS ((bfd *, struct bfd_link_info *));
 588 extern boolean _bfd_xcoff_bfd_final_link
 589   PARAMS ((bfd *, struct bfd_link_info *));
 590 extern boolean _bfd_ppc_xcoff_relocate_section
 591   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 592            struct internal_reloc *, struct internal_syment *, asection **));
 593
 594 /* Functions in coff-ppc.c.  FIXME: These are called be pe.em in the
 595    linker, and so should start with bfd and be declared in bfd.h.  */
 596
 597 extern boolean ppc_allocate_toc_section
 598   PARAMS ((struct bfd_link_info *));
 599 extern boolean ppc_process_before_allocation
 600   PARAMS ((bfd *, struct bfd_link_info *));
 601
 602 /* And more taken from the source .. */
 603
 604 typedef struct coff_ptr_struct
 605 {
 606   /* Remembers the offset from the first symbol in the file for
 607      this symbol. Generated by coff_renumber_symbols. */
 608   unsigned int offset;
 609
 610   /* Should the value of this symbol be renumbered.  Used for
 611      XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 612   unsigned int fix_value : 1;
 613
 614   /* Should the tag field of this symbol be renumbered.
 615      Created by coff_pointerize_aux. */
 616   unsigned int fix_tag : 1;
 617
 618   /* Should the endidx field of this symbol be renumbered.
 619      Created by coff_pointerize_aux. */
 620   unsigned int fix_end : 1;
 621
 622   /* Should the x_csect.x_scnlen field be renumbered.
 623      Created by coff_pointerize_aux. */
 624   unsigned int fix_scnlen : 1;
 625
 626   /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 627      index into the line number entries.  Set by coff_slurp_symbol_table.  */
 628   unsigned int fix_line : 1;
 629
 630   /* The container for the symbol structure as read and translated
 631      from the file. */
 632   union
 633   {
 634     union internal_auxent auxent;
 635     struct internal_syment syment;
 636   } u;
 637 } combined_entry_type;
 638
 639
 640 /* Each canonical asymbol really looks like this: */
 641
 642 typedef struct coff_symbol_struct
 643 {
 644   /* The actual symbol which the rest of BFD works with */
 645   asymbol symbol;
 646
 647   /* A pointer to the hidden information for this symbol */
 648   combined_entry_type *native;
 649
 650   /* A pointer to the linenumber information for this symbol */
 651   struct lineno_cache_entry *lineno;
 652
 653   /* Have the line numbers been relocated yet ? */
 654   boolean done_lineno;
 655 } coff_symbol_type;
 656 /* COFF symbol classifications.  */
 657
 658 enum coff_symbol_classification
 659 {
 660   /* Global symbol.  */
 661   COFF_SYMBOL_GLOBAL,
 662   /* Common symbol.  */
 663   COFF_SYMBOL_COMMON,
 664   /* Undefined symbol.  */
 665   COFF_SYMBOL_UNDEFINED,
 666   /* Local symbol.  */
 667   COFF_SYMBOL_LOCAL,
 668   /* PE section symbol.  */
 669   COFF_SYMBOL_PE_SECTION
 670 };
 671
 672 typedef struct
 673 {
 674   void (*_bfd_coff_swap_aux_in)
 675     PARAMS ((bfd *, PTR, int, int, int, int, PTR));
 676
 677   void (*_bfd_coff_swap_sym_in)
 678     PARAMS ((bfd *, PTR, PTR));
 679
 680   void (*_bfd_coff_swap_lineno_in)
 681     PARAMS ((bfd *, PTR, PTR));
 682
 683   unsigned int (*_bfd_coff_swap_aux_out)
 684     PARAMS ((bfd *, PTR, int, int, int, int, PTR));
 685
 686   unsigned int (*_bfd_coff_swap_sym_out)
 687     PARAMS ((bfd *, PTR, PTR));
 688
 689   unsigned int (*_bfd_coff_swap_lineno_out)
 690     PARAMS ((bfd *, PTR, PTR));
 691
 692   unsigned int (*_bfd_coff_swap_reloc_out)
 693     PARAMS ((bfd *, PTR, PTR));
 694
 695   unsigned int (*_bfd_coff_swap_filehdr_out)
 696     PARAMS ((bfd *, PTR, PTR));
 697
 698   unsigned int (*_bfd_coff_swap_aouthdr_out)
 699     PARAMS ((bfd *, PTR, PTR));
 700
 701   unsigned int (*_bfd_coff_swap_scnhdr_out)
 702     PARAMS ((bfd *, PTR, PTR));
 703
 704   unsigned int _bfd_filhsz;
 705   unsigned int _bfd_aoutsz;
 706   unsigned int _bfd_scnhsz;
 707   unsigned int _bfd_symesz;
 708   unsigned int _bfd_auxesz;
 709   unsigned int _bfd_relsz;
 710   unsigned int _bfd_linesz;
 711   unsigned int _bfd_filnmlen;
 712   boolean _bfd_coff_long_filenames;
 713   boolean _bfd_coff_long_section_names;
 714   unsigned int _bfd_coff_default_section_alignment_power;
 715   boolean _bfd_coff_force_symnames_in_strings;
 716   unsigned int _bfd_coff_debug_string_prefix_length;
 717
 718   void (*_bfd_coff_swap_filehdr_in)
 719     PARAMS ((bfd *, PTR, PTR));
 720
 721   void (*_bfd_coff_swap_aouthdr_in)
 722     PARAMS ((bfd *, PTR, PTR));
 723
 724   void (*_bfd_coff_swap_scnhdr_in)
 725     PARAMS ((bfd *, PTR, PTR));
 726
 727   void (*_bfd_coff_swap_reloc_in)
 728     PARAMS ((bfd *abfd, PTR, PTR));
 729
 730   boolean (*_bfd_coff_bad_format_hook)
 731     PARAMS ((bfd *, PTR));
 732
 733   boolean (*_bfd_coff_set_arch_mach_hook)
 734     PARAMS ((bfd *, PTR));
 735
 736   PTR (*_bfd_coff_mkobject_hook)
 737     PARAMS ((bfd *, PTR, PTR));
 738
 739   boolean (*_bfd_styp_to_sec_flags_hook)
 740     PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
 741
 742   void (*_bfd_set_alignment_hook)
 743     PARAMS ((bfd *, asection *, PTR));
 744
 745   boolean (*_bfd_coff_slurp_symbol_table)
 746     PARAMS ((bfd *));
 747
 748   boolean (*_bfd_coff_symname_in_debug)
 749     PARAMS ((bfd *, struct internal_syment *));
 750
 751   boolean (*_bfd_coff_pointerize_aux_hook)
 752     PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
 753             unsigned int, combined_entry_type *));
 754
 755   boolean (*_bfd_coff_print_aux)
 756     PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 757             combined_entry_type *, unsigned int));
 758
 759   void (*_bfd_coff_reloc16_extra_cases)
 760     PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 761            bfd_byte *, unsigned int *, unsigned int *));
 762
 763   int (*_bfd_coff_reloc16_estimate)
 764     PARAMS ((bfd *, asection *, arelent *, unsigned int,
 765             struct bfd_link_info *));
 766
 767   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 768     PARAMS ((bfd *, struct internal_syment *));
 769
 770   boolean (*_bfd_coff_compute_section_file_positions)
 771     PARAMS ((bfd *));
 772
 773   boolean (*_bfd_coff_start_final_link)
 774     PARAMS ((bfd *, struct bfd_link_info *));
 775
 776   boolean (*_bfd_coff_relocate_section)
 777     PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 778             struct internal_reloc *, struct internal_syment *, asection **));
 779
 780   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 781     PARAMS ((bfd *, asection *, struct internal_reloc *,
 782             struct coff_link_hash_entry *, struct internal_syment *,
 783             bfd_vma *));
 784
 785   boolean (*_bfd_coff_adjust_symndx)\
 786     PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
 787             struct internal_reloc *, boolean *));
 788
 789   boolean (*_bfd_coff_link_add_one_symbol)
 790     PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
 791             asection *, bfd_vma, const char *, boolean, boolean,
 792             struct bfd_link_hash_entry **));
 793
 794   boolean (*_bfd_coff_link_output_has_begun)
 795     PARAMS ((bfd *, struct coff_final_link_info *));
 796
 797   boolean (*_bfd_coff_final_link_postscript)
 798     PARAMS ((bfd *, struct coff_final_link_info *));
 799
 800 } bfd_coff_backend_data;
 801
 802 #define coff_backend_info(abfd) \
 803   ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 804
 805 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 806   ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 807
 808 #define bfd_coff_swap_sym_in(a,e,i) \
 809   ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 810
 811 #define bfd_coff_swap_lineno_in(a,e,i) \
 812   ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 813
 814 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 815   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 816
 817 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 818   ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 819
 820 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 821   ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 822
 823 #define bfd_coff_swap_sym_out(abfd, i,o) \
 824   ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 825
 826 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 827   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 828
 829 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 830   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 831
 832 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 833   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 834
 835 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 836 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 837 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 838 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 839 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 840 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 841 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 842 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 843 #define bfd_coff_long_filenames(abfd) \
 844   (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 845 #define bfd_coff_long_section_names(abfd) \
 846   (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 847 #define bfd_coff_default_section_alignment_power(abfd) \
 848   (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 849 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 850   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 851
 852 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 853   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 854
 855 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 856   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 857
 858 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 859   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 860
 861 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 862   ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 863
 864 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 865   ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 866 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 867   ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
 868
 869 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
 870   ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 871    (abfd, scnhdr, name, section, flags_ptr))
 872
 873 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 874   ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 875
 876 #define bfd_coff_slurp_symbol_table(abfd)\
 877   ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 878
 879 #define bfd_coff_symname_in_debug(abfd, sym)\
 880   ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 881
 882 #define bfd_coff_force_symnames_in_strings(abfd)\
 883   (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 884
 885 #define bfd_coff_debug_string_prefix_length(abfd)\
 886   (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 887
 888 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 889   ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 890    (abfd, file, base, symbol, aux, indaux))
 891
 892 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
 893   ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 894    (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 895
 896 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 897   ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 898    (abfd, section, reloc, shrink, link_info))
 899
 900 #define bfd_coff_classify_symbol(abfd, sym)\
 901   ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 902    (abfd, sym))
 903
 904 #define bfd_coff_compute_section_file_positions(abfd)\
 905   ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 906    (abfd))
 907
 908 #define bfd_coff_start_final_link(obfd, info)\
 909   ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 910    (obfd, info))
 911 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
 912   ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
 913    (obfd, info, ibfd, o, con, rel, isyms, secs))
 914 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
 915   ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
 916    (abfd, sec, rel, h, sym, addendp))
 917 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
 918   ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
 919    (obfd, info, ibfd, sec, rel, adjustedp))
 920 #define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
 921   ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 922    (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 923
 924 #define bfd_coff_link_output_has_begun(a,p) \
 925   ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
 926 #define bfd_coff_final_link_postscript(a,p) \
 927   ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
 928