bfd/libcoff.h

   1 /* DO NOT EDIT!  -*- buffer-read-only: t -*-  This file is automatically
   2    generated from "libcoff-in.h" and "coffcode.h".
   3    Run "make headers" in your build bfd/ to regenerate.  */
   4
   5 /* BFD COFF object file private structure.
   6    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   7    2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
   8    Free Software Foundation, Inc.
   9    Written by Cygnus Support.
  10
  11    This file is part of BFD, the Binary File Descriptor library.
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 3 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  26    MA 02110-1301, USA.  */
  27
  28 #include "bfdlink.h"
  29
  30 /* Object file tdata; access macros.  */
  31
  32 #define coff_data(bfd)                ((bfd)->tdata.coff_obj_data)
  33 #define obj_pe(bfd)                   (coff_data (bfd)->pe)
  34 #define obj_symbols(bfd)              (coff_data (bfd)->symbols)
  35 #define obj_sym_filepos(bfd)          (coff_data (bfd)->sym_filepos)
  36 #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 #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 #define obj_coff_local_toc_table(bfd) (coff_data (bfd)->local_toc_sym_map)
  48
  49 /* `Tdata' information kept for COFF files.  */
  50
  51 typedef struct coff_tdata
  52 {
  53   struct coff_symbol_struct *symbols;   /* Symtab for input bfd.  */
  54   unsigned int *conversion_table;
  55   int conv_table_size;
  56   file_ptr sym_filepos;
  57
  58   struct coff_ptr_struct *raw_syments;
  59   unsigned long raw_syment_count;
  60
  61   /* These are only valid once writing has begun.  */
  62   long int relocbase;
  63
  64   /* These members communicate important constants about the symbol table
  65      to GDB's symbol-reading code.  These `constants' unfortunately vary
  66      from coff implementation to implementation...  */
  67   unsigned local_n_btmask;
  68   unsigned local_n_btshft;
  69   unsigned local_n_tmask;
  70   unsigned local_n_tshift;
  71   unsigned local_symesz;
  72   unsigned local_auxesz;
  73   unsigned local_linesz;
  74
  75   /* The unswapped external symbols.  May be NULL.  Read by
  76      _bfd_coff_get_external_symbols.  */
  77   void * external_syms;
  78   /* If this is TRUE, the external_syms may not be freed.  */
  79   bfd_boolean keep_syms;
  80
  81   /* The string table.  May be NULL.  Read by
  82      _bfd_coff_read_string_table.  */
  83   char *strings;
  84   /* If this is TRUE, the strings may not be freed.  */
  85   bfd_boolean keep_strings;
  86   /* If this is TRUE, the strings have been written out already.  */
  87   bfd_boolean strings_written;
  88
  89   /* Is this a PE format coff file?  */
  90   int pe;
  91   /* Used by the COFF backend linker.  */
  92   struct coff_link_hash_entry **sym_hashes;
  93
  94   /* Used by the pe linker for PowerPC.  */
  95   int *local_toc_sym_map;
  96
  97   struct bfd_link_info *link_info;
  98
  99   /* Used by coff_find_nearest_line.  */
 100   void * line_info;
 101
 102   /* A place to stash dwarf2 info for this bfd.  */
 103   void * dwarf2_find_line_info;
 104
 105   /* The timestamp from the COFF file header.  */
 106   long timestamp;
 107
 108   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 109      used by ARM code.  */
 110   flagword flags;
 111
 112   /* coff-stgo32 EXE stub header after BFD tdata has been allocated.  Its data
 113      is kept in internal_filehdr.go32stub beforehand.  */
 114   char *go32stub;
 115 } coff_data_type;
 116
 117 /* Tdata for pe image files.  */
 118 typedef struct pe_tdata
 119 {
 120   coff_data_type coff;
 121   struct internal_extra_pe_aouthdr pe_opthdr;
 122   int dll;
 123   int has_reloc_section;
 124   int dont_strip_reloc;
 125   bfd_boolean (*in_reloc_p) (bfd *, reloc_howto_type *);
 126   flagword real_flags;
 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   bfd_boolean xcoff64;
 140
 141   /* TRUE if a large a.out header should be generated.  */
 142   bfd_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   long *debug_indices;
 174   unsigned int *lineno_counts;
 175   unsigned int import_file_id;
 176 };
 177
 178 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 179
 180 /* We take the address of the first element of an asymbol to ensure that the
 181    macro is only ever applied to an asymbol.  */
 182 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 183
 184 /* The used_by_bfd field of a section may be set to a pointer to this
 185    structure.  */
 186
 187 struct coff_section_tdata
 188 {
 189   /* The relocs, swapped into COFF internal form.  This may be NULL.  */
 190   struct internal_reloc *relocs;
 191   /* If this is TRUE, the relocs entry may not be freed.  */
 192   bfd_boolean keep_relocs;
 193   /* The section contents.  This may be NULL.  */
 194   bfd_byte *contents;
 195   /* If this is TRUE, the contents entry may not be freed.  */
 196   bfd_boolean keep_contents;
 197   /* Information cached by coff_find_nearest_line.  */
 198   bfd_vma offset;
 199   unsigned int i;
 200   const char *function;
 201   /* Optional information about a COMDAT entry; NULL if not COMDAT. */
 202   struct coff_comdat_info *comdat;
 203   int line_base;
 204   /* A pointer used for .stab linking optimizations.  */
 205   void * stab_info;
 206   /* Available for individual backends.  */
 207   void * tdata;
 208 };
 209
 210 /* An accessor macro for the coff_section_tdata structure.  */
 211 #define coff_section_data(abfd, sec) \
 212   ((struct coff_section_tdata *) (sec)->used_by_bfd)
 213
 214 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 215
 216 struct xcoff_section_tdata
 217 {
 218   /* Used for XCOFF csects created by the linker; points to the real
 219      XCOFF section which contains this csect.  */
 220   asection *enclosing;
 221   /* The lineno_count field for the enclosing section, because we are
 222      going to clobber it there.  */
 223   unsigned int lineno_count;
 224   /* The first and last symbol indices for symbols used by this csect.  */
 225   unsigned long first_symndx;
 226   unsigned long last_symndx;
 227 };
 228
 229 /* An accessor macro the xcoff_section_tdata structure.  */
 230 #define xcoff_section_data(abfd, sec) \
 231   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 232
 233 /* Tdata for sections in PE files.  */
 234
 235 struct pei_section_tdata
 236 {
 237   /* The virtual size of the section.  */
 238   bfd_size_type virt_size;
 239   /* The PE section flags.  */
 240   long pe_flags;
 241 };
 242
 243 /* An accessor macro for the pei_section_tdata structure.  */
 244 #define pei_section_data(abfd, sec) \
 245   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 246
 247 /* COFF linker hash table entries.  */
 248
 249 struct coff_link_hash_entry
 250 {
 251   struct bfd_link_hash_entry root;
 252
 253   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 254      there is a reloc against this symbol.  */
 255   long indx;
 256
 257   /* Symbol type.  */
 258   unsigned short type;
 259
 260   /* Symbol class.  */
 261   unsigned char symbol_class;
 262
 263   /* Number of auxiliary entries.  */
 264   char numaux;
 265
 266   /* BFD to take auxiliary entries from.  */
 267   bfd *auxbfd;
 268
 269   /* Pointer to array of auxiliary entries, if any.  */
 270   union internal_auxent *aux;
 271
 272   /* Flag word; legal values follow.  */
 273   unsigned short coff_link_hash_flags;
 274   /* Symbol is a PE section symbol.  */
 275 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 276 };
 277
 278 /* COFF linker hash table.  */
 279
 280 struct coff_link_hash_table
 281 {
 282   struct bfd_link_hash_table root;
 283   /* A pointer to information used to link stabs in sections.  */
 284   struct stab_info stab_info;
 285 };
 286
 287 /* Look up an entry in a COFF linker hash table.  */
 288
 289 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 290   ((struct coff_link_hash_entry *)                                      \
 291    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 292                          (copy), (follow)))
 293
 294 /* Traverse a COFF linker hash table.  */
 295
 296 #define coff_link_hash_traverse(table, func, info)                      \
 297   (bfd_link_hash_traverse                                               \
 298    (&(table)->root,                                                     \
 299     (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
 300     (info)))
 301
 302 /* Get the COFF linker hash table from a link_info structure.  */
 303
 304 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 305
 306 /* Functions in coffgen.c.  */
 307 extern const bfd_target *coff_object_p
 308   (bfd *);
 309 extern struct bfd_section *coff_section_from_bfd_index
 310   (bfd *, int);
 311 extern long coff_get_symtab_upper_bound
 312   (bfd *);
 313 extern long coff_canonicalize_symtab
 314   (bfd *, asymbol **);
 315 extern int coff_count_linenumbers
 316   (bfd *);
 317 extern struct coff_symbol_struct *coff_symbol_from
 318   (bfd *, asymbol *);
 319 extern bfd_boolean coff_renumber_symbols
 320   (bfd *, int *);
 321 extern void coff_mangle_symbols
 322   (bfd *);
 323 extern bfd_boolean coff_write_symbols
 324   (bfd *);
 325 extern bfd_boolean coff_write_alien_symbol
 326   (bfd *, asymbol *, struct internal_syment *, bfd_vma *,
 327    bfd_size_type *, asection **, bfd_size_type *);
 328 extern bfd_boolean coff_write_linenumbers
 329   (bfd *);
 330 extern alent *coff_get_lineno
 331   (bfd *, asymbol *);
 332 extern asymbol *coff_section_symbol
 333   (bfd *, char *);
 334 extern bfd_boolean _bfd_coff_get_external_symbols
 335   (bfd *);
 336 extern const char *_bfd_coff_read_string_table
 337   (bfd *);
 338 extern bfd_boolean _bfd_coff_free_symbols
 339   (bfd *);
 340 extern struct coff_ptr_struct *coff_get_normalized_symtab
 341   (bfd *);
 342 extern long coff_get_reloc_upper_bound
 343   (bfd *, sec_ptr);
 344 extern asymbol *coff_make_empty_symbol
 345   (bfd *);
 346 extern void coff_print_symbol
 347   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 348 extern void coff_get_symbol_info
 349   (bfd *, asymbol *, symbol_info *ret);
 350 extern bfd_boolean _bfd_coff_is_local_label_name
 351   (bfd *, const char *);
 352 extern asymbol *coff_bfd_make_debug_symbol
 353   (bfd *, void *, unsigned long);
 354 extern bfd_boolean coff_find_nearest_line
 355   (bfd *, asection *, asymbol **, bfd_vma, const char **,
 356    const char **, unsigned int *);
 357 extern bfd_boolean coff_find_nearest_line_discriminator
 358   (bfd *, asection *, asymbol **, bfd_vma, const char **,
 359    const char **, unsigned int *, unsigned int *);
 360 struct dwarf_debug_section;
 361 extern bfd_boolean coff_find_nearest_line_with_names
 362   (bfd *, const struct dwarf_debug_section *, asection *, asymbol **,
 363    bfd_vma, const char **, const char **, unsigned int *);
 364 extern bfd_boolean coff_find_inliner_info
 365   (bfd *, const char **, const char **, unsigned int *);
 366 extern int coff_sizeof_headers
 367   (bfd *, struct bfd_link_info *);
 368 extern bfd_boolean bfd_coff_reloc16_relax_section
 369   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 370 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 371   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 372    bfd_byte *, bfd_boolean, asymbol **);
 373 extern bfd_vma bfd_coff_reloc16_get_value
 374   (arelent *, struct bfd_link_info *, asection *);
 375 extern void bfd_perform_slip
 376   (bfd *, unsigned int, asection *, bfd_vma);
 377
 378 /* Functions and types in cofflink.c.  */
 379
 380 #define STRING_SIZE_SIZE 4
 381
 382 /* We use a hash table to merge identical enum, struct, and union
 383    definitions in the linker.  */
 384
 385 /* Information we keep for a single element (an enum value, a
 386    structure or union field) in the debug merge hash table.  */
 387
 388 struct coff_debug_merge_element
 389 {
 390   /* Next element.  */
 391   struct coff_debug_merge_element *next;
 392
 393   /* Name.  */
 394   const char *name;
 395
 396   /* Type.  */
 397   unsigned int type;
 398
 399   /* Symbol index for complex type.  */
 400   long tagndx;
 401 };
 402
 403 /* A linked list of debug merge entries for a given name.  */
 404
 405 struct coff_debug_merge_type
 406 {
 407   /* Next type with the same name.  */
 408   struct coff_debug_merge_type *next;
 409
 410   /* Class of type.  */
 411   int type_class;
 412
 413   /* Symbol index where this type is defined.  */
 414   long indx;
 415
 416   /* List of elements.  */
 417   struct coff_debug_merge_element *elements;
 418 };
 419
 420 /* Information we store in the debug merge hash table.  */
 421
 422 struct coff_debug_merge_hash_entry
 423 {
 424   struct bfd_hash_entry root;
 425
 426   /* A list of types with this name.  */
 427   struct coff_debug_merge_type *types;
 428 };
 429
 430 /* The debug merge hash table.  */
 431
 432 struct coff_debug_merge_hash_table
 433 {
 434   struct bfd_hash_table root;
 435 };
 436
 437 /* Initialize a COFF debug merge hash table.  */
 438
 439 #define coff_debug_merge_hash_table_init(table) \
 440   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc, \
 441                         sizeof (struct coff_debug_merge_hash_entry)))
 442
 443 /* Free a COFF debug merge hash table.  */
 444
 445 #define coff_debug_merge_hash_table_free(table) \
 446   (bfd_hash_table_free (&(table)->root))
 447
 448 /* Look up an entry in a COFF debug merge hash table.  */
 449
 450 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 451   ((struct coff_debug_merge_hash_entry *) \
 452    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 453
 454 /* Information we keep for each section in the output file when doing
 455    a relocatable link.  */
 456
 457 struct coff_link_section_info
 458 {
 459   /* The relocs to be output.  */
 460   struct internal_reloc *relocs;
 461   /* For each reloc against a global symbol whose index was not known
 462      when the reloc was handled, the global hash table entry.  */
 463   struct coff_link_hash_entry **rel_hashes;
 464 };
 465
 466 /* Information that we pass around while doing the final link step.  */
 467
 468 struct coff_final_link_info
 469 {
 470   /* General link information.  */
 471   struct bfd_link_info *info;
 472   /* Output BFD.  */
 473   bfd *output_bfd;
 474   /* Used to indicate failure in traversal routine.  */
 475   bfd_boolean failed;
 476   /* If doing "task linking" set only during the time when we want the
 477      global symbol writer to convert the storage class of defined global
 478      symbols from global to static. */
 479   bfd_boolean global_to_static;
 480   /* Hash table for long symbol names.  */
 481   struct bfd_strtab_hash *strtab;
 482   /* When doing a relocatable link, an array of information kept for
 483      each output section, indexed by the target_index field.  */
 484   struct coff_link_section_info *section_info;
 485   /* Symbol index of last C_FILE symbol (-1 if none).  */
 486   long last_file_index;
 487   /* Contents of last C_FILE symbol.  */
 488   struct internal_syment last_file;
 489   /* Symbol index of first aux entry of last .bf symbol with an empty
 490      endndx field (-1 if none).  */
 491   long last_bf_index;
 492   /* Contents of last_bf_index aux entry.  */
 493   union internal_auxent last_bf;
 494   /* Hash table used to merge debug information.  */
 495   struct coff_debug_merge_hash_table debug_merge;
 496   /* Buffer large enough to hold swapped symbols of any input file.  */
 497   struct internal_syment *internal_syms;
 498   /* Buffer large enough to hold sections of symbols of any input file.  */
 499   asection **sec_ptrs;
 500   /* Buffer large enough to hold output indices of symbols of any
 501      input file.  */
 502   long *sym_indices;
 503   /* Buffer large enough to hold output symbols for any input file.  */
 504   bfd_byte *outsyms;
 505   /* Buffer large enough to hold external line numbers for any input
 506      section.  */
 507   bfd_byte *linenos;
 508   /* Buffer large enough to hold any input section.  */
 509   bfd_byte *contents;
 510   /* Buffer large enough to hold external relocs of any input section.  */
 511   bfd_byte *external_relocs;
 512   /* Buffer large enough to hold swapped relocs of any input section.  */
 513   struct internal_reloc *internal_relocs;
 514 };
 515
 516 /* Most COFF variants have no way to record the alignment of a
 517    section.  This struct is used to set a specific alignment based on
 518    the name of the section.  */
 519
 520 struct coff_section_alignment_entry
 521 {
 522   /* The section name.  */
 523   const char *name;
 524
 525   /* This is either (unsigned int) -1, indicating that the section
 526      name must match exactly, or it is the number of letters which
 527      must match at the start of the name.  */
 528   unsigned int comparison_length;
 529
 530   /* These macros may be used to fill in the first two fields in a
 531      structure initialization.  */
 532 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 533 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 534
 535   /* Only use this entry if the default section alignment for this
 536      target is at least that much (as a power of two).  If this field
 537      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 538   unsigned int default_alignment_min;
 539
 540   /* Only use this entry if the default section alignment for this
 541      target is no greater than this (as a power of two).  If this
 542      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 543   unsigned int default_alignment_max;
 544
 545 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 546
 547   /* The desired alignment for this section (as a power of two).  */
 548   unsigned int alignment_power;
 549 };
 550
 551 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 552   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 553 extern bfd_boolean _bfd_coff_link_hash_table_init
 554   (struct coff_link_hash_table *, bfd *,
 555    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 556                                struct bfd_hash_table *,
 557                                const char *),
 558    unsigned int);
 559 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 560   (bfd *);
 561 extern const char *_bfd_coff_internal_syment_name
 562   (bfd *, const struct internal_syment *, char *);
 563 extern bfd_boolean _bfd_coff_section_already_linked
 564   (bfd *, asection *, struct bfd_link_info *);
 565 extern bfd_boolean _bfd_coff_link_add_symbols
 566   (bfd *, struct bfd_link_info *);
 567 extern bfd_boolean _bfd_coff_final_link
 568   (bfd *, struct bfd_link_info *);
 569 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 570   (bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
 571    struct internal_reloc *);
 572 extern bfd_boolean _bfd_coff_generic_relocate_section
 573   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 574    struct internal_reloc *, struct internal_syment *, asection **);
 575 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 576   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 577 extern bfd_boolean _bfd_coff_write_global_sym
 578   (struct bfd_hash_entry *, void *);
 579 extern bfd_boolean _bfd_coff_write_task_globals
 580   (struct coff_link_hash_entry *, void *);
 581 extern bfd_boolean _bfd_coff_link_input_bfd
 582   (struct coff_final_link_info *, bfd *);
 583 extern bfd_boolean _bfd_coff_reloc_link_order
 584   (bfd *, struct coff_final_link_info *, asection *,
 585    struct bfd_link_order *);
 586
 587
 588 #define coff_get_section_contents_in_window \
 589   _bfd_generic_get_section_contents_in_window
 590
 591 /* Functions in xcofflink.c.  */
 592
 593 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 594   (bfd *);
 595 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 596   (bfd *, asymbol **);
 597 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 598   (bfd *);
 599 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 600   (bfd *, arelent **, asymbol **);
 601 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 602   (bfd *);
 603 extern void _bfd_xcoff_bfd_link_hash_table_free
 604   (struct bfd_link_hash_table *);
 605 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 606   (bfd *, struct bfd_link_info *);
 607 extern bfd_boolean _bfd_xcoff_bfd_final_link
 608   (bfd *, struct bfd_link_info *);
 609 extern bfd_boolean _bfd_xcoff_define_common_symbol
 610   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 611 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 612   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 613    struct internal_reloc *, struct internal_syment *, asection **);
 614
 615 /* Functions in coff-ppc.c.  FIXME: These are called by pe.em in the
 616    linker, and so should start with bfd and be declared in bfd.h.  */
 617
 618 extern bfd_boolean ppc_allocate_toc_section
 619   (struct bfd_link_info *);
 620 extern bfd_boolean ppc_process_before_allocation
 621   (bfd *, struct bfd_link_info *);
 622 /* Extracted from coffcode.h.  */
 623 typedef struct coff_ptr_struct
 624 {
 625   /* Remembers the offset from the first symbol in the file for
 626      this symbol. Generated by coff_renumber_symbols. */
 627   unsigned int offset;
 628
 629   /* Should the value of this symbol be renumbered.  Used for
 630      XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 631   unsigned int fix_value : 1;
 632
 633   /* Should the tag field of this symbol be renumbered.
 634      Created by coff_pointerize_aux. */
 635   unsigned int fix_tag : 1;
 636
 637   /* Should the endidx field of this symbol be renumbered.
 638      Created by coff_pointerize_aux. */
 639   unsigned int fix_end : 1;
 640
 641   /* Should the x_csect.x_scnlen field be renumbered.
 642      Created by coff_pointerize_aux. */
 643   unsigned int fix_scnlen : 1;
 644
 645   /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 646      index into the line number entries.  Set by coff_slurp_symbol_table.  */
 647   unsigned int fix_line : 1;
 648
 649   /* The container for the symbol structure as read and translated
 650      from the file. */
 651   union
 652   {
 653     union internal_auxent auxent;
 654     struct internal_syment syment;
 655   } u;
 656 } combined_entry_type;
 657
 658
 659 /* Each canonical asymbol really looks like this: */
 660
 661 typedef struct coff_symbol_struct
 662 {
 663   /* The actual symbol which the rest of BFD works with */
 664   asymbol symbol;
 665
 666   /* A pointer to the hidden information for this symbol */
 667   combined_entry_type *native;
 668
 669   /* A pointer to the linenumber information for this symbol */
 670   struct lineno_cache_entry *lineno;
 671
 672   /* Have the line numbers been relocated yet ? */
 673   bfd_boolean done_lineno;
 674 } coff_symbol_type;
 675 /* COFF symbol classifications.  */
 676
 677 enum coff_symbol_classification
 678 {
 679   /* Global symbol.  */
 680   COFF_SYMBOL_GLOBAL,
 681   /* Common symbol.  */
 682   COFF_SYMBOL_COMMON,
 683   /* Undefined symbol.  */
 684   COFF_SYMBOL_UNDEFINED,
 685   /* Local symbol.  */
 686   COFF_SYMBOL_LOCAL,
 687   /* PE section symbol.  */
 688   COFF_SYMBOL_PE_SECTION
 689 };
 690
 691 typedef struct
 692 {
 693   void (*_bfd_coff_swap_aux_in)
 694     (bfd *, void *, int, int, int, int, void *);
 695
 696   void (*_bfd_coff_swap_sym_in)
 697     (bfd *, void *, void *);
 698
 699   void (*_bfd_coff_swap_lineno_in)
 700     (bfd *, void *, void *);
 701
 702   unsigned int (*_bfd_coff_swap_aux_out)
 703     (bfd *, void *, int, int, int, int, void *);
 704
 705   unsigned int (*_bfd_coff_swap_sym_out)
 706     (bfd *, void *, void *);
 707
 708   unsigned int (*_bfd_coff_swap_lineno_out)
 709     (bfd *, void *, void *);
 710
 711   unsigned int (*_bfd_coff_swap_reloc_out)
 712     (bfd *, void *, void *);
 713
 714   unsigned int (*_bfd_coff_swap_filehdr_out)
 715     (bfd *, void *, void *);
 716
 717   unsigned int (*_bfd_coff_swap_aouthdr_out)
 718     (bfd *, void *, void *);
 719
 720   unsigned int (*_bfd_coff_swap_scnhdr_out)
 721     (bfd *, void *, void *);
 722
 723   unsigned int _bfd_filhsz;
 724   unsigned int _bfd_aoutsz;
 725   unsigned int _bfd_scnhsz;
 726   unsigned int _bfd_symesz;
 727   unsigned int _bfd_auxesz;
 728   unsigned int _bfd_relsz;
 729   unsigned int _bfd_linesz;
 730   unsigned int _bfd_filnmlen;
 731   bfd_boolean _bfd_coff_long_filenames;
 732
 733   bfd_boolean _bfd_coff_long_section_names;
 734   bfd_boolean (*_bfd_coff_set_long_section_names)
 735     (bfd *, int);
 736
 737   unsigned int _bfd_coff_default_section_alignment_power;
 738   bfd_boolean _bfd_coff_force_symnames_in_strings;
 739   unsigned int _bfd_coff_debug_string_prefix_length;
 740
 741   void (*_bfd_coff_swap_filehdr_in)
 742     (bfd *, void *, void *);
 743
 744   void (*_bfd_coff_swap_aouthdr_in)
 745     (bfd *, void *, void *);
 746
 747   void (*_bfd_coff_swap_scnhdr_in)
 748     (bfd *, void *, void *);
 749
 750   void (*_bfd_coff_swap_reloc_in)
 751     (bfd *abfd, void *, void *);
 752
 753   bfd_boolean (*_bfd_coff_bad_format_hook)
 754     (bfd *, void *);
 755
 756   bfd_boolean (*_bfd_coff_set_arch_mach_hook)
 757     (bfd *, void *);
 758
 759   void * (*_bfd_coff_mkobject_hook)
 760     (bfd *, void *, void *);
 761
 762   bfd_boolean (*_bfd_styp_to_sec_flags_hook)
 763     (bfd *, void *, const char *, asection *, flagword *);
 764
 765   void (*_bfd_set_alignment_hook)
 766     (bfd *, asection *, void *);
 767
 768   bfd_boolean (*_bfd_coff_slurp_symbol_table)
 769     (bfd *);
 770
 771   bfd_boolean (*_bfd_coff_symname_in_debug)
 772     (bfd *, struct internal_syment *);
 773
 774   bfd_boolean (*_bfd_coff_pointerize_aux_hook)
 775     (bfd *, combined_entry_type *, combined_entry_type *,
 776             unsigned int, combined_entry_type *);
 777
 778   bfd_boolean (*_bfd_coff_print_aux)
 779     (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 780             combined_entry_type *, unsigned int);
 781
 782   void (*_bfd_coff_reloc16_extra_cases)
 783     (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 784            bfd_byte *, unsigned int *, unsigned int *);
 785
 786   int (*_bfd_coff_reloc16_estimate)
 787     (bfd *, asection *, arelent *, unsigned int,
 788             struct bfd_link_info *);
 789
 790   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 791     (bfd *, struct internal_syment *);
 792
 793   bfd_boolean (*_bfd_coff_compute_section_file_positions)
 794     (bfd *);
 795
 796   bfd_boolean (*_bfd_coff_start_final_link)
 797     (bfd *, struct bfd_link_info *);
 798
 799   bfd_boolean (*_bfd_coff_relocate_section)
 800     (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 801             struct internal_reloc *, struct internal_syment *, asection **);
 802
 803   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 804     (bfd *, asection *, struct internal_reloc *,
 805             struct coff_link_hash_entry *, struct internal_syment *,
 806             bfd_vma *);
 807
 808   bfd_boolean (*_bfd_coff_adjust_symndx)
 809     (bfd *, struct bfd_link_info *, bfd *, asection *,
 810             struct internal_reloc *, bfd_boolean *);
 811
 812   bfd_boolean (*_bfd_coff_link_add_one_symbol)
 813     (struct bfd_link_info *, bfd *, const char *, flagword,
 814             asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
 815             struct bfd_link_hash_entry **);
 816
 817   bfd_boolean (*_bfd_coff_link_output_has_begun)
 818     (bfd *, struct coff_final_link_info *);
 819
 820   bfd_boolean (*_bfd_coff_final_link_postscript)
 821     (bfd *, struct coff_final_link_info *);
 822
 823   bfd_boolean (*_bfd_coff_print_pdata)
 824     (bfd *, void *);
 825
 826 } bfd_coff_backend_data;
 827
 828 #define coff_backend_info(abfd) \
 829   ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 830
 831 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 832   ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 833
 834 #define bfd_coff_swap_sym_in(a,e,i) \
 835   ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 836
 837 #define bfd_coff_swap_lineno_in(a,e,i) \
 838   ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 839
 840 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 841   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 842
 843 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 844   ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 845
 846 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 847   ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 848
 849 #define bfd_coff_swap_sym_out(abfd, i,o) \
 850   ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 851
 852 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 853   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 854
 855 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 856   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 857
 858 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 859   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 860
 861 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 862 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 863 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 864 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 865 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 866 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 867 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 868 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 869 #define bfd_coff_long_filenames(abfd) \
 870   (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 871 #define bfd_coff_long_section_names(abfd) \
 872   (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 873 #define bfd_coff_set_long_section_names(abfd, enable) \
 874   ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
 875 #define bfd_coff_default_section_alignment_power(abfd) \
 876   (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 877 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 878   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 879
 880 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 881   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 882
 883 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 884   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 885
 886 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 887   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 888
 889 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 890   ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 891
 892 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 893   ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 894 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 895   ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
 896    (abfd, filehdr, aouthdr))
 897
 898 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
 899   ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 900    (abfd, scnhdr, name, section, flags_ptr))
 901
 902 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 903   ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 904
 905 #define bfd_coff_slurp_symbol_table(abfd)\
 906   ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 907
 908 #define bfd_coff_symname_in_debug(abfd, sym)\
 909   ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 910
 911 #define bfd_coff_force_symnames_in_strings(abfd)\
 912   (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 913
 914 #define bfd_coff_debug_string_prefix_length(abfd)\
 915   (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 916
 917 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 918   ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 919    (abfd, file, base, symbol, aux, indaux))
 920
 921 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
 922                                      reloc, data, src_ptr, dst_ptr)\
 923   ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 924    (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 925
 926 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 927   ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 928    (abfd, section, reloc, shrink, link_info))
 929
 930 #define bfd_coff_classify_symbol(abfd, sym)\
 931   ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 932    (abfd, sym))
 933
 934 #define bfd_coff_compute_section_file_positions(abfd)\
 935   ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 936    (abfd))
 937
 938 #define bfd_coff_start_final_link(obfd, info)\
 939   ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 940    (obfd, info))
 941 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
 942   ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
 943    (obfd, info, ibfd, o, con, rel, isyms, secs))
 944 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
 945   ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
 946    (abfd, sec, rel, h, sym, addendp))
 947 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
 948   ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
 949    (obfd, info, ibfd, sec, rel, adjustedp))
 950 #define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
 951                                      value, string, cp, coll, hashp)\
 952   ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 953    (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 954
 955 #define bfd_coff_link_output_has_begun(a,p) \
 956   ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
 957 #define bfd_coff_final_link_postscript(a,p) \
 958   ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
 959
 960 #define bfd_coff_have_print_pdata(a) \
 961   (coff_backend_info (a)->_bfd_coff_print_pdata)
 962 #define bfd_coff_print_pdata(a,p) \
 963   ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
 964
 965 /* Macro: Returns true if the bfd is a PE executable as opposed to a
 966    PE object file.  */
 967 #define bfd_pei_p(abfd) \
 968   (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))