bfd/libcoff-in.h

   1 /* BFD COFF object file private structure.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   3    2000, 2001, 2002
   4    Free Software Foundation, Inc.
   5    Written by Cygnus Support.
   6
   7 This file is part of BFD, the Binary File Descriptor library.
   8
   9 This program is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2 of the License, or
  12 (at your option) any later version.
  13
  14 This program is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with this program; if not, write to the Free Software
  21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  22
  23 #include "bfdlink.h"
  24
  25 /* Object file tdata; access macros */
  26
  27 #define coff_data(bfd)          ((bfd)->tdata.coff_obj_data)
  28 #define exec_hdr(bfd)           (coff_data(bfd)->hdr)
  29 #define obj_pe(bfd)             (coff_data(bfd)->pe)
  30 #define obj_symbols(bfd)        (coff_data(bfd)->symbols)
  31 #define obj_sym_filepos(bfd)    (coff_data(bfd)->sym_filepos)
  32
  33 #define obj_relocbase(bfd)      (coff_data(bfd)->relocbase)
  34 #define obj_raw_syments(bfd)    (coff_data(bfd)->raw_syments)
  35 #define obj_raw_syment_count(bfd)       (coff_data(bfd)->raw_syment_count)
  36 #define obj_convert(bfd)        (coff_data(bfd)->conversion_table)
  37 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
  38
  39 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
  40 #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
  41 #define obj_coff_strings(bfd)   (coff_data (bfd)->strings)
  42 #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
  43 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
  44 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  45
  46 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
  47
  48 /* `Tdata' information kept for COFF files.  */
  49
  50 typedef struct coff_tdata
  51 {
  52   struct   coff_symbol_struct *symbols; /* symtab for input bfd */
  53   unsigned int *conversion_table;
  54   int conv_table_size;
  55   file_ptr sym_filepos;
  56
  57   struct coff_ptr_struct *raw_syments;
  58   unsigned long raw_syment_count;
  59
  60   /* These are only valid once writing has begun */
  61   long int relocbase;
  62
  63   /* These members communicate important constants about the symbol table
  64      to GDB's symbol-reading code.  These `constants' unfortunately vary
  65      from coff implementation to implementation...  */
  66   unsigned local_n_btmask;
  67   unsigned local_n_btshft;
  68   unsigned local_n_tmask;
  69   unsigned local_n_tshift;
  70   unsigned local_symesz;
  71   unsigned local_auxesz;
  72   unsigned local_linesz;
  73
  74   /* The unswapped external symbols.  May be NULL.  Read by
  75      _bfd_coff_get_external_symbols.  */
  76   PTR external_syms;
  77   /* If this is true, the external_syms may not be freed.  */
  78   boolean keep_syms;
  79
  80   /* The string table.  May be NULL.  Read by
  81      _bfd_coff_read_string_table.  */
  82   char *strings;
  83   /* If this is true, the strings may not be freed.  */
  84   boolean keep_strings;
  85   /* If this is true, the strings have been written out already.  */
  86   boolean strings_written;
  87
  88   /* is this a PE format coff file */
  89   int pe;
  90   /* Used by the COFF backend linker.  */
  91   struct coff_link_hash_entry **sym_hashes;
  92
  93   /* used by the pe linker for PowerPC */
  94   int *local_toc_sym_map;
  95
  96   struct bfd_link_info *link_info;
  97
  98   /* Used by coff_find_nearest_line.  */
  99   PTR line_info;
 100
 101   /* A place to stash dwarf2 info for this bfd. */
 102   PTR dwarf2_find_line_info;
 103
 104   /* The timestamp from the COFF file header.  */
 105   long timestamp;
 106
 107   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 108      used by ARM code.  */
 109   flagword flags;
 110
 111 } coff_data_type;
 112
 113 /* Tdata for pe image files. */
 114 typedef struct pe_tdata
 115 {
 116   coff_data_type coff;
 117   struct internal_extra_pe_aouthdr pe_opthdr;
 118   int dll;
 119   int has_reloc_section;
 120   boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
 121   flagword real_flags;
 122   int target_subsystem;
 123   boolean force_minimum_alignment;
 124 } pe_data_type;
 125
 126 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 127
 128 /* Tdata for XCOFF files.  */
 129
 130 struct xcoff_tdata
 131 {
 132   /* Basic COFF information.  */
 133   coff_data_type coff;
 134
 135   /* True if this is an XCOFF64 file. */
 136   boolean xcoff64;
 137
 138   /* True if a large a.out header should be generated.  */
 139   boolean full_aouthdr;
 140
 141   /* TOC value.  */
 142   bfd_vma toc;
 143
 144   /* Index of section holding TOC.  */
 145   int sntoc;
 146
 147   /* Index of section holding entry point.  */
 148   int snentry;
 149
 150   /* .text alignment from optional header.  */
 151   int text_align_power;
 152
 153   /* .data alignment from optional header.  */
 154   int data_align_power;
 155
 156   /* modtype from optional header.  */
 157   short modtype;
 158
 159   /* cputype from optional header.  */
 160   short cputype;
 161
 162   /* maxdata from optional header.  */
 163   bfd_vma maxdata;
 164
 165   /* maxstack from optional header.  */
 166   bfd_vma maxstack;
 167
 168   /* Used by the XCOFF backend linker.  */
 169   asection **csects;
 170   unsigned long *debug_indices;
 171   unsigned int import_file_id;
 172 };
 173
 174 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 175
 176 /* We take the address of the first element of an asymbol to ensure that the
 177  * macro is only ever applied to an asymbol.  */
 178 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 179
 180 /* The used_by_bfd field of a section may be set to a pointer to this
 181    structure.  */
 182
 183 struct coff_section_tdata
 184 {
 185   /* The relocs, swapped into COFF internal form.  This may be NULL.  */
 186   struct internal_reloc *relocs;
 187   /* If this is true, the relocs entry may not be freed.  */
 188   boolean keep_relocs;
 189   /* The section contents.  This may be NULL.  */
 190   bfd_byte *contents;
 191   /* If this is true, the contents entry may not be freed.  */
 192   boolean keep_contents;
 193   /* Information cached by coff_find_nearest_line.  */
 194   bfd_vma offset;
 195   unsigned int i;
 196   const char *function;
 197   int line_base;
 198   /* A pointer used for .stab linking optimizations.  */
 199   PTR stab_info;
 200   /* Available for individual backends.  */
 201   PTR tdata;
 202 };
 203
 204 /* An accessor macro for the coff_section_tdata structure.  */
 205 #define coff_section_data(abfd, sec) \
 206   ((struct coff_section_tdata *) (sec)->used_by_bfd)
 207
 208 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 209
 210 struct xcoff_section_tdata
 211 {
 212   /* Used for XCOFF csects created by the linker; points to the real
 213      XCOFF section which contains this csect.  */
 214   asection *enclosing;
 215   /* The lineno_count field for the enclosing section, because we are
 216      going to clobber it there.  */
 217   unsigned int lineno_count;
 218   /* The first and one past the last symbol indices for symbols used
 219      by this csect.  */
 220   unsigned long first_symndx;
 221   unsigned long last_symndx;
 222 };
 223
 224 /* An accessor macro the xcoff_section_tdata structure.  */
 225 #define xcoff_section_data(abfd, sec) \
 226   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 227
 228 /* Tdata for sections in PE files.  */
 229
 230 struct pei_section_tdata
 231 {
 232   /* The virtual size of the section.  */
 233   bfd_size_type virt_size;
 234   /* The PE section flags.  */
 235   long pe_flags;
 236 };
 237
 238 /* An accessor macro for the pei_section_tdata structure.  */
 239 #define pei_section_data(abfd, sec) \
 240   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 241
 242 /* COFF linker hash table entries.  */
 243
 244 struct coff_link_hash_entry
 245 {
 246   struct bfd_link_hash_entry root;
 247
 248   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 249      there is a reloc against this symbol.  */
 250   long indx;
 251
 252   /* Symbol type.  */
 253   unsigned short type;
 254
 255   /* Symbol class.  */
 256   unsigned char class;
 257
 258   /* Number of auxiliary entries.  */
 259   char numaux;
 260
 261   /* BFD to take auxiliary entries from.  */
 262   bfd *auxbfd;
 263
 264   /* Pointer to array of auxiliary entries, if any.  */
 265   union internal_auxent *aux;
 266
 267   /* Flag word; legal values follow.  */
 268   unsigned short coff_link_hash_flags;
 269   /* Symbol is a PE section symbol.  */
 270 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 271 };
 272
 273 /* COFF linker hash table.  */
 274
 275 struct coff_link_hash_table
 276 {
 277   struct bfd_link_hash_table root;
 278   /* A pointer to information used to link stabs in sections.  */
 279   PTR stab_info;
 280 };
 281
 282 /* Look up an entry in a COFF linker hash table.  */
 283
 284 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 285   ((struct coff_link_hash_entry *)                                      \
 286    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 287                          (copy), (follow)))
 288
 289 /* Traverse a COFF linker hash table.  */
 290
 291 #define coff_link_hash_traverse(table, func, info)                      \
 292   (bfd_link_hash_traverse                                               \
 293    (&(table)->root,                                                     \
 294     (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
 295     (info)))
 296
 297 /* Get the COFF linker hash table from a link_info structure.  */
 298
 299 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 300
 301 /* Functions in coffgen.c.  */
 302 extern const bfd_target *coff_object_p
 303   PARAMS ((bfd *));
 304 extern struct sec *coff_section_from_bfd_index
 305   PARAMS ((bfd *, int));
 306 extern long coff_get_symtab_upper_bound
 307   PARAMS ((bfd *));
 308 extern long coff_get_symtab
 309   PARAMS ((bfd *, asymbol **));
 310 extern int coff_count_linenumbers
 311   PARAMS ((bfd *));
 312 extern struct coff_symbol_struct *coff_symbol_from
 313   PARAMS ((bfd *, asymbol *));
 314 extern boolean coff_renumber_symbols
 315   PARAMS ((bfd *, int *));
 316 extern void coff_mangle_symbols
 317   PARAMS ((bfd *));
 318 extern boolean coff_write_symbols
 319   PARAMS ((bfd *));
 320 extern boolean coff_write_linenumbers
 321   PARAMS ((bfd *));
 322 extern alent *coff_get_lineno
 323   PARAMS ((bfd *, asymbol *));
 324 extern asymbol *coff_section_symbol
 325   PARAMS ((bfd *, char *));
 326 extern boolean _bfd_coff_get_external_symbols
 327   PARAMS ((bfd *));
 328 extern const char *_bfd_coff_read_string_table
 329   PARAMS ((bfd *));
 330 extern boolean _bfd_coff_free_symbols
 331   PARAMS ((bfd *));
 332 extern struct coff_ptr_struct *coff_get_normalized_symtab
 333   PARAMS ((bfd *));
 334 extern long coff_get_reloc_upper_bound
 335   PARAMS ((bfd *, sec_ptr));
 336 extern asymbol *coff_make_empty_symbol
 337   PARAMS ((bfd *));
 338 extern void coff_print_symbol
 339   PARAMS ((bfd *, PTR filep, asymbol *, bfd_print_symbol_type));
 340 extern void coff_get_symbol_info
 341   PARAMS ((bfd *, asymbol *, symbol_info *ret));
 342 extern boolean _bfd_coff_is_local_label_name
 343   PARAMS ((bfd *, const char *));
 344 extern asymbol *coff_bfd_make_debug_symbol
 345   PARAMS ((bfd *, PTR, unsigned long));
 346 extern boolean coff_find_nearest_line
 347   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 348            const char **, unsigned int *));
 349 extern int coff_sizeof_headers
 350   PARAMS ((bfd *, boolean));
 351 extern boolean bfd_coff_reloc16_relax_section
 352   PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
 353 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 354   PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
 355            bfd_byte *, boolean, asymbol **));
 356 extern bfd_vma bfd_coff_reloc16_get_value
 357    PARAMS ((arelent *, struct bfd_link_info *, asection *));
 358 extern void bfd_perform_slip
 359   PARAMS ((bfd *, unsigned int, asection *, bfd_vma));
 360
 361 /* Functions and types in cofflink.c.  */
 362
 363 #define STRING_SIZE_SIZE (4)
 364
 365 /* We use a hash table to merge identical enum, struct, and union
 366    definitions in the linker.  */
 367
 368 /* Information we keep for a single element (an enum value, a
 369    structure or union field) in the debug merge hash table.  */
 370
 371 struct coff_debug_merge_element
 372 {
 373   /* Next element.  */
 374   struct coff_debug_merge_element *next;
 375
 376   /* Name.  */
 377   const char *name;
 378
 379   /* Type.  */
 380   unsigned int type;
 381
 382   /* Symbol index for complex type.  */
 383   long tagndx;
 384 };
 385
 386 /* A linked list of debug merge entries for a given name.  */
 387
 388 struct coff_debug_merge_type
 389 {
 390   /* Next type with the same name.  */
 391   struct coff_debug_merge_type *next;
 392
 393   /* Class of type.  */
 394   int class;
 395
 396   /* Symbol index where this type is defined.  */
 397   long indx;
 398
 399   /* List of elements.  */
 400   struct coff_debug_merge_element *elements;
 401 };
 402
 403 /* Information we store in the debug merge hash table.  */
 404
 405 struct coff_debug_merge_hash_entry
 406 {
 407   struct bfd_hash_entry root;
 408
 409   /* A list of types with this name.  */
 410   struct coff_debug_merge_type *types;
 411 };
 412
 413 /* The debug merge hash table.  */
 414
 415 struct coff_debug_merge_hash_table
 416 {
 417   struct bfd_hash_table root;
 418 };
 419
 420 /* Initialize a COFF debug merge hash table.  */
 421
 422 #define coff_debug_merge_hash_table_init(table) \
 423   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
 424
 425 /* Free a COFF debug merge hash table.  */
 426
 427 #define coff_debug_merge_hash_table_free(table) \
 428   (bfd_hash_table_free (&(table)->root))
 429
 430 /* Look up an entry in a COFF debug merge hash table.  */
 431
 432 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 433   ((struct coff_debug_merge_hash_entry *) \
 434    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 435
 436 /* Information we keep for each section in the output file when doing
 437    a relocateable link.  */
 438
 439 struct coff_link_section_info
 440 {
 441   /* The relocs to be output.  */
 442   struct internal_reloc *relocs;
 443   /* For each reloc against a global symbol whose index was not known
 444      when the reloc was handled, the global hash table entry.  */
 445   struct coff_link_hash_entry **rel_hashes;
 446 };
 447
 448 /* Information that we pass around while doing the final link step.  */
 449
 450 struct coff_final_link_info
 451 {
 452   /* General link information.  */
 453   struct bfd_link_info *info;
 454   /* Output BFD.  */
 455   bfd *output_bfd;
 456   /* Used to indicate failure in traversal routine.  */
 457   boolean failed;
 458   /* If doing "task linking" set only during the time when we want the
 459      global symbol writer to convert the storage class of defined global
 460      symbols from global to static. */
 461   boolean global_to_static;
 462   /* Hash table for long symbol names.  */
 463   struct bfd_strtab_hash *strtab;
 464   /* When doing a relocateable link, an array of information kept for
 465      each output section, indexed by the target_index field.  */
 466   struct coff_link_section_info *section_info;
 467   /* Symbol index of last C_FILE symbol (-1 if none).  */
 468   long last_file_index;
 469   /* Contents of last C_FILE symbol.  */
 470   struct internal_syment last_file;
 471   /* Symbol index of first aux entry of last .bf symbol with an empty
 472      endndx field (-1 if none).  */
 473   long last_bf_index;
 474   /* Contents of last_bf_index aux entry.  */
 475   union internal_auxent last_bf;
 476   /* Hash table used to merge debug information.  */
 477   struct coff_debug_merge_hash_table debug_merge;
 478   /* Buffer large enough to hold swapped symbols of any input file.  */
 479   struct internal_syment *internal_syms;
 480   /* Buffer large enough to hold sections of symbols of any input file.  */
 481   asection **sec_ptrs;
 482   /* Buffer large enough to hold output indices of symbols of any
 483      input file.  */
 484   long *sym_indices;
 485   /* Buffer large enough to hold output symbols for any input file.  */
 486   bfd_byte *outsyms;
 487   /* Buffer large enough to hold external line numbers for any input
 488      section.  */
 489   bfd_byte *linenos;
 490   /* Buffer large enough to hold any input section.  */
 491   bfd_byte *contents;
 492   /* Buffer large enough to hold external relocs of any input section.  */
 493   bfd_byte *external_relocs;
 494   /* Buffer large enough to hold swapped relocs of any input section.  */
 495   struct internal_reloc *internal_relocs;
 496 };
 497
 498 /* Most COFF variants have no way to record the alignment of a
 499    section.  This struct is used to set a specific alignment based on
 500    the name of the section.  */
 501
 502 struct coff_section_alignment_entry
 503 {
 504   /* The section name.  */
 505   const char *name;
 506
 507   /* This is either (unsigned int) -1, indicating that the section
 508      name must match exactly, or it is the number of letters which
 509      must match at the start of the name.  */
 510   unsigned int comparison_length;
 511
 512   /* These macros may be used to fill in the first two fields in a
 513      structure initialization.  */
 514 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 515 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 516
 517   /* Only use this entry if the default section alignment for this
 518      target is at least that much (as a power of two).  If this field
 519      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 520   unsigned int default_alignment_min;
 521
 522   /* Only use this entry if the default section alignment for this
 523      target is no greater than this (as a power of two).  If this
 524      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 525   unsigned int default_alignment_max;
 526
 527 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 528
 529   /* The desired alignment for this section (as a power of two).  */
 530   unsigned int alignment_power;
 531 };
 532
 533 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 534   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 535 extern boolean _bfd_coff_link_hash_table_init
 536   PARAMS ((struct coff_link_hash_table *, bfd *,
 537            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 538                                        struct bfd_hash_table *,
 539                                        const char *)));
 540 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 541   PARAMS ((bfd *));
 542 extern const char *_bfd_coff_internal_syment_name
 543   PARAMS ((bfd *, const struct internal_syment *, char *));
 544 extern boolean _bfd_coff_link_add_symbols
 545   PARAMS ((bfd *, struct bfd_link_info *));
 546 extern boolean _bfd_coff_final_link
 547   PARAMS ((bfd *, struct bfd_link_info *));
 548 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 549   PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
 550            struct internal_reloc *));
 551 extern boolean _bfd_coff_generic_relocate_section
 552   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 553            struct internal_reloc *, struct internal_syment *, asection **));
 554
 555 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 556   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 557 extern boolean _bfd_coff_write_global_sym
 558   PARAMS ((struct coff_link_hash_entry *, PTR));
 559 extern boolean _bfd_coff_write_task_globals
 560   PARAMS ((struct coff_link_hash_entry *, PTR));
 561 extern boolean _bfd_coff_link_input_bfd
 562   PARAMS ((struct coff_final_link_info *, bfd *));
 563 extern boolean _bfd_coff_reloc_link_order
 564   PARAMS ((bfd *, struct coff_final_link_info *, asection *,
 565            struct bfd_link_order *));
 566
 567
 568 #define coff_get_section_contents_in_window \
 569   _bfd_generic_get_section_contents_in_window
 570
 571 /* Functions in xcofflink.c.  */
 572
 573 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 574   PARAMS ((bfd *));
 575 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 576   PARAMS ((bfd *, asymbol **));
 577 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 578   PARAMS ((bfd *));
 579 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 580   PARAMS ((bfd *, arelent **, asymbol **));
 581 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 582   PARAMS ((bfd *));
 583 extern void _bfd_xcoff_bfd_link_hash_table_free
 584   PARAMS ((struct bfd_link_hash_table *));
 585 extern boolean _bfd_xcoff_bfd_link_add_symbols
 586   PARAMS ((bfd *, struct bfd_link_info *));
 587 extern boolean _bfd_xcoff_bfd_final_link
 588   PARAMS ((bfd *, struct bfd_link_info *));
 589 extern boolean _bfd_ppc_xcoff_relocate_section
 590   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 591            struct internal_reloc *, struct internal_syment *, asection **));
 592
 593 /* Functions in coff-ppc.c.  FIXME: These are called be pe.em in the
 594    linker, and so should start with bfd and be declared in bfd.h.  */
 595
 596 extern boolean ppc_allocate_toc_section
 597   PARAMS ((struct bfd_link_info *));
 598 extern boolean ppc_process_before_allocation
 599   PARAMS ((bfd *, struct bfd_link_info *));
 600