bfd/libcoff-in.h

   1 /* BFD COFF object file private structure.
   2    Copyright (C) 1990-2015 Free Software Foundation, Inc.
   3    Written by Cygnus Support.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "bfdlink.h"
  23 #include "coff-bfd.h"
  24
  25 #ifdef __cplusplus
  26 extern "C" {
  27 #endif
  28
  29 /* Object file tdata; access macros.  */
  30
  31 #define coff_data(bfd)                ((bfd)->tdata.coff_obj_data)
  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 #define obj_relocbase(bfd)            (coff_data (bfd)->relocbase)
  36 #define obj_raw_syments(bfd)          (coff_data (bfd)->raw_syments)
  37 #define obj_raw_syment_count(bfd)     (coff_data (bfd)->raw_syment_count)
  38 #define obj_convert(bfd)              (coff_data (bfd)->conversion_table)
  39 #define obj_conv_table_size(bfd)      (coff_data (bfd)->conv_table_size)
  40 #define obj_coff_external_syms(bfd)   (coff_data (bfd)->external_syms)
  41 #define obj_coff_keep_syms(bfd)       (coff_data (bfd)->keep_syms)
  42 #define obj_coff_strings(bfd)         (coff_data (bfd)->strings)
  43 #define obj_coff_strings_len(bfd)     (coff_data (bfd)->strings_len)
  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   unsigned 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   /* The length of the strings table.  For error checking.  */
  85   bfd_size_type strings_len;
  86   /* If this is TRUE, the strings may not be freed.  */
  87   bfd_boolean keep_strings;
  88   /* If this is TRUE, the strings have been written out already.  */
  89   bfd_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   void * line_info;
 103
 104   /* A place to stash dwarf2 info for this bfd.  */
 105   void * 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-stgo32 EXE stub header after BFD tdata has been allocated.  Its data
 115      is kept in internal_filehdr.go32stub beforehand.  */
 116   char *go32stub;
 117 } coff_data_type;
 118
 119 /* Tdata for pe image files.  */
 120 typedef struct pe_tdata
 121 {
 122   coff_data_type coff;
 123   struct internal_extra_pe_aouthdr pe_opthdr;
 124   int dll;
 125   int has_reloc_section;
 126   int dont_strip_reloc;
 127   bfd_boolean insert_timestamp;
 128   bfd_boolean (*in_reloc_p) (bfd *, reloc_howto_type *);
 129   flagword real_flags;
 130
 131   /* Build-id info.  */
 132   struct
 133   {
 134     bfd_boolean (*after_write_object_contents) (bfd *);
 135     const char *style;
 136     asection *sec;
 137   } build_id;
 138 } pe_data_type;
 139
 140 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 141
 142 /* Tdata for XCOFF files.  */
 143
 144 struct xcoff_tdata
 145 {
 146   /* Basic COFF information.  */
 147   coff_data_type coff;
 148
 149   /* TRUE if this is an XCOFF64 file. */
 150   bfd_boolean xcoff64;
 151
 152   /* TRUE if a large a.out header should be generated.  */
 153   bfd_boolean full_aouthdr;
 154
 155   /* TOC value.  */
 156   bfd_vma toc;
 157
 158   /* Index of section holding TOC.  */
 159   int sntoc;
 160
 161   /* Index of section holding entry point.  */
 162   int snentry;
 163
 164   /* .text alignment from optional header.  */
 165   int text_align_power;
 166
 167   /* .data alignment from optional header.  */
 168   int data_align_power;
 169
 170   /* modtype from optional header.  */
 171   short modtype;
 172
 173   /* cputype from optional header.  */
 174   short cputype;
 175
 176   /* maxdata from optional header.  */
 177   bfd_vma maxdata;
 178
 179   /* maxstack from optional header.  */
 180   bfd_vma maxstack;
 181
 182   /* Used by the XCOFF backend linker.  */
 183   asection **csects;
 184   long *debug_indices;
 185   unsigned int *lineno_counts;
 186   unsigned int import_file_id;
 187 };
 188
 189 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 190
 191 /* We take the address of the first element of an asymbol to ensure that the
 192    macro is only ever applied to an asymbol.  */
 193 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 194
 195 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 196
 197 struct xcoff_section_tdata
 198 {
 199   /* Used for XCOFF csects created by the linker; points to the real
 200      XCOFF section which contains this csect.  */
 201   asection *enclosing;
 202   /* The lineno_count field for the enclosing section, because we are
 203      going to clobber it there.  */
 204   unsigned int lineno_count;
 205   /* The first and last symbol indices for symbols used by this csect.  */
 206   unsigned long first_symndx;
 207   unsigned long last_symndx;
 208 };
 209
 210 /* An accessor macro the xcoff_section_tdata structure.  */
 211 #define xcoff_section_data(abfd, sec) \
 212   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 213
 214 /* Tdata for sections in PE files.  */
 215
 216 struct pei_section_tdata
 217 {
 218   /* The virtual size of the section.  */
 219   bfd_size_type virt_size;
 220   /* The PE section flags.  */
 221   long pe_flags;
 222 };
 223
 224 /* An accessor macro for the pei_section_tdata structure.  */
 225 #define pei_section_data(abfd, sec) \
 226   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 227
 228 /* COFF linker hash table entries.  */
 229
 230 struct coff_link_hash_entry
 231 {
 232   struct bfd_link_hash_entry root;
 233
 234   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 235      there is a reloc against this symbol.  */
 236   long indx;
 237
 238   /* Symbol type.  */
 239   unsigned short type;
 240
 241   /* Symbol class.  */
 242   unsigned char symbol_class;
 243
 244   /* Number of auxiliary entries.  */
 245   char numaux;
 246
 247   /* BFD to take auxiliary entries from.  */
 248   bfd *auxbfd;
 249
 250   /* Pointer to array of auxiliary entries, if any.  */
 251   union internal_auxent *aux;
 252
 253   /* Flag word; legal values follow.  */
 254   unsigned short coff_link_hash_flags;
 255   /* Symbol is a PE section symbol.  */
 256 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 257 };
 258
 259 /* COFF linker hash table.  */
 260
 261 struct coff_link_hash_table
 262 {
 263   struct bfd_link_hash_table root;
 264   /* A pointer to information used to link stabs in sections.  */
 265   struct stab_info stab_info;
 266 };
 267
 268 /* Look up an entry in a COFF linker hash table.  */
 269
 270 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 271   ((struct coff_link_hash_entry *)                                      \
 272    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 273                          (copy), (follow)))
 274
 275 /* Traverse a COFF linker hash table.  */
 276
 277 #define coff_link_hash_traverse(table, func, info)                      \
 278   (bfd_link_hash_traverse                                               \
 279    (&(table)->root,                                                     \
 280     (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
 281     (info)))
 282
 283 /* Get the COFF linker hash table from a link_info structure.  */
 284
 285 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 286
 287 /* Functions in coffgen.c.  */
 288 extern const bfd_target *coff_object_p
 289   (bfd *);
 290 extern struct bfd_section *coff_section_from_bfd_index
 291   (bfd *, int);
 292 extern long coff_get_symtab_upper_bound
 293   (bfd *);
 294 extern long coff_canonicalize_symtab
 295   (bfd *, asymbol **);
 296 extern int coff_count_linenumbers
 297   (bfd *);
 298 extern bfd_boolean coff_renumber_symbols
 299   (bfd *, int *);
 300 extern void coff_mangle_symbols
 301   (bfd *);
 302 extern bfd_boolean coff_write_symbols
 303   (bfd *);
 304 extern bfd_boolean coff_write_alien_symbol
 305   (bfd *, asymbol *, struct internal_syment *, bfd_vma *,
 306    bfd_size_type *, asection **, bfd_size_type *);
 307 extern bfd_boolean coff_write_linenumbers
 308   (bfd *);
 309 extern alent *coff_get_lineno
 310   (bfd *, asymbol *);
 311 extern asymbol *coff_section_symbol
 312   (bfd *, char *);
 313 extern bfd_boolean _bfd_coff_get_external_symbols
 314   (bfd *);
 315 extern const char *_bfd_coff_read_string_table
 316   (bfd *);
 317 extern bfd_boolean _bfd_coff_free_symbols
 318   (bfd *);
 319 extern struct coff_ptr_struct *coff_get_normalized_symtab
 320   (bfd *);
 321 extern long coff_get_reloc_upper_bound
 322   (bfd *, sec_ptr);
 323 extern asymbol *coff_make_empty_symbol
 324   (bfd *);
 325 extern void coff_print_symbol
 326   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 327 extern void coff_get_symbol_info
 328   (bfd *, asymbol *, symbol_info *ret);
 329 #define coff_get_symbol_version_string \
 330   _bfd_nosymbols_get_symbol_version_string
 331 extern bfd_boolean _bfd_coff_is_local_label_name
 332   (bfd *, const char *);
 333 extern asymbol *coff_bfd_make_debug_symbol
 334   (bfd *, void *, unsigned long);
 335 extern bfd_boolean coff_find_nearest_line
 336   (bfd *, asymbol **, asection *, bfd_vma,
 337    const char **, const char **, unsigned int *, unsigned int *);
 338 #define coff_find_line _bfd_nosymbols_find_line
 339 struct dwarf_debug_section;
 340 extern bfd_boolean coff_find_nearest_line_with_names
 341   (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **,
 342    unsigned int *, const struct dwarf_debug_section *);
 343 extern bfd_boolean coff_find_inliner_info
 344   (bfd *, const char **, const char **, unsigned int *);
 345 extern int coff_sizeof_headers
 346   (bfd *, struct bfd_link_info *);
 347 extern bfd_boolean bfd_coff_reloc16_relax_section
 348   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 349 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 350   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 351    bfd_byte *, bfd_boolean, asymbol **);
 352 extern bfd_vma bfd_coff_reloc16_get_value
 353   (arelent *, struct bfd_link_info *, asection *);
 354 extern void bfd_perform_slip
 355   (bfd *, unsigned int, asection *, bfd_vma);
 356
 357 /* Functions and types in cofflink.c.  */
 358
 359 #define STRING_SIZE_SIZE 4
 360
 361 /* We use a hash table to merge identical enum, struct, and union
 362    definitions in the linker.  */
 363
 364 /* Information we keep for a single element (an enum value, a
 365    structure or union field) in the debug merge hash table.  */
 366
 367 struct coff_debug_merge_element
 368 {
 369   /* Next element.  */
 370   struct coff_debug_merge_element *next;
 371
 372   /* Name.  */
 373   const char *name;
 374
 375   /* Type.  */
 376   unsigned int type;
 377
 378   /* Symbol index for complex type.  */
 379   long tagndx;
 380 };
 381
 382 /* A linked list of debug merge entries for a given name.  */
 383
 384 struct coff_debug_merge_type
 385 {
 386   /* Next type with the same name.  */
 387   struct coff_debug_merge_type *next;
 388
 389   /* Class of type.  */
 390   int type_class;
 391
 392   /* Symbol index where this type is defined.  */
 393   long indx;
 394
 395   /* List of elements.  */
 396   struct coff_debug_merge_element *elements;
 397 };
 398
 399 /* Information we store in the debug merge hash table.  */
 400
 401 struct coff_debug_merge_hash_entry
 402 {
 403   struct bfd_hash_entry root;
 404
 405   /* A list of types with this name.  */
 406   struct coff_debug_merge_type *types;
 407 };
 408
 409 /* The debug merge hash table.  */
 410
 411 struct coff_debug_merge_hash_table
 412 {
 413   struct bfd_hash_table root;
 414 };
 415
 416 /* Initialize a COFF debug merge hash table.  */
 417
 418 #define coff_debug_merge_hash_table_init(table) \
 419   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc, \
 420                         sizeof (struct coff_debug_merge_hash_entry)))
 421
 422 /* Free a COFF debug merge hash table.  */
 423
 424 #define coff_debug_merge_hash_table_free(table) \
 425   (bfd_hash_table_free (&(table)->root))
 426
 427 /* Look up an entry in a COFF debug merge hash table.  */
 428
 429 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 430   ((struct coff_debug_merge_hash_entry *) \
 431    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 432
 433 /* Information we keep for each section in the output file when doing
 434    a relocatable link.  */
 435
 436 struct coff_link_section_info
 437 {
 438   /* The relocs to be output.  */
 439   struct internal_reloc *relocs;
 440   /* For each reloc against a global symbol whose index was not known
 441      when the reloc was handled, the global hash table entry.  */
 442   struct coff_link_hash_entry **rel_hashes;
 443 };
 444
 445 /* Information that we pass around while doing the final link step.  */
 446
 447 struct coff_final_link_info
 448 {
 449   /* General link information.  */
 450   struct bfd_link_info *info;
 451   /* Output BFD.  */
 452   bfd *output_bfd;
 453   /* Used to indicate failure in traversal routine.  */
 454   bfd_boolean failed;
 455   /* If doing "task linking" set only during the time when we want the
 456      global symbol writer to convert the storage class of defined global
 457      symbols from global to static. */
 458   bfd_boolean global_to_static;
 459   /* Hash table for long symbol names.  */
 460   struct bfd_strtab_hash *strtab;
 461   /* When doing a relocatable link, an array of information kept for
 462      each output section, indexed by the target_index field.  */
 463   struct coff_link_section_info *section_info;
 464   /* Symbol index of last C_FILE symbol (-1 if none).  */
 465   long last_file_index;
 466   /* Contents of last C_FILE symbol.  */
 467   struct internal_syment last_file;
 468   /* Symbol index of first aux entry of last .bf symbol with an empty
 469      endndx field (-1 if none).  */
 470   long last_bf_index;
 471   /* Contents of last_bf_index aux entry.  */
 472   union internal_auxent last_bf;
 473   /* Hash table used to merge debug information.  */
 474   struct coff_debug_merge_hash_table debug_merge;
 475   /* Buffer large enough to hold swapped symbols of any input file.  */
 476   struct internal_syment *internal_syms;
 477   /* Buffer large enough to hold sections of symbols of any input file.  */
 478   asection **sec_ptrs;
 479   /* Buffer large enough to hold output indices of symbols of any
 480      input file.  */
 481   long *sym_indices;
 482   /* Buffer large enough to hold output symbols for any input file.  */
 483   bfd_byte *outsyms;
 484   /* Buffer large enough to hold external line numbers for any input
 485      section.  */
 486   bfd_byte *linenos;
 487   /* Buffer large enough to hold any input section.  */
 488   bfd_byte *contents;
 489   /* Buffer large enough to hold external relocs of any input section.  */
 490   bfd_byte *external_relocs;
 491   /* Buffer large enough to hold swapped relocs of any input section.  */
 492   struct internal_reloc *internal_relocs;
 493 };
 494
 495 /* Most COFF variants have no way to record the alignment of a
 496    section.  This struct is used to set a specific alignment based on
 497    the name of the section.  */
 498
 499 struct coff_section_alignment_entry
 500 {
 501   /* The section name.  */
 502   const char *name;
 503
 504   /* This is either (unsigned int) -1, indicating that the section
 505      name must match exactly, or it is the number of letters which
 506      must match at the start of the name.  */
 507   unsigned int comparison_length;
 508
 509   /* These macros may be used to fill in the first two fields in a
 510      structure initialization.  */
 511 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 512 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 513
 514   /* Only use this entry if the default section alignment for this
 515      target is at least that much (as a power of two).  If this field
 516      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 517   unsigned int default_alignment_min;
 518
 519   /* Only use this entry if the default section alignment for this
 520      target is no greater than this (as a power of two).  If this
 521      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 522   unsigned int default_alignment_max;
 523
 524 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 525
 526   /* The desired alignment for this section (as a power of two).  */
 527   unsigned int alignment_power;
 528 };
 529
 530 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 531   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 532 extern bfd_boolean _bfd_coff_link_hash_table_init
 533   (struct coff_link_hash_table *, bfd *,
 534    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 535                                struct bfd_hash_table *,
 536                                const char *),
 537    unsigned int);
 538 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 539   (bfd *);
 540 extern const char *_bfd_coff_internal_syment_name
 541   (bfd *, const struct internal_syment *, char *);
 542 extern bfd_boolean _bfd_coff_section_already_linked
 543   (bfd *, asection *, struct bfd_link_info *);
 544 extern bfd_boolean _bfd_coff_link_add_symbols
 545   (bfd *, struct bfd_link_info *);
 546 extern bfd_boolean _bfd_coff_final_link
 547   (bfd *, struct bfd_link_info *);
 548 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 549   (bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
 550    struct internal_reloc *);
 551 extern bfd_boolean _bfd_coff_generic_relocate_section
 552   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 553    struct internal_reloc *, struct internal_syment *, asection **);
 554 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 555   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 556 extern bfd_boolean _bfd_coff_write_global_sym
 557   (struct bfd_hash_entry *, void *);
 558 extern bfd_boolean _bfd_coff_write_task_globals
 559   (struct coff_link_hash_entry *, void *);
 560 extern bfd_boolean _bfd_coff_link_input_bfd
 561   (struct coff_final_link_info *, bfd *);
 562 extern bfd_boolean _bfd_coff_reloc_link_order
 563   (bfd *, struct coff_final_link_info *, asection *,
 564    struct bfd_link_order *);
 565
 566
 567 #define coff_get_section_contents_in_window \
 568   _bfd_generic_get_section_contents_in_window
 569
 570 /* Functions in xcofflink.c.  */
 571
 572 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 573   (bfd *);
 574 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 575   (bfd *, asymbol **);
 576 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 577   (bfd *);
 578 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 579   (bfd *, arelent **, asymbol **);
 580 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 581   (bfd *);
 582 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 583   (bfd *, struct bfd_link_info *);
 584 extern bfd_boolean _bfd_xcoff_bfd_final_link
 585   (bfd *, struct bfd_link_info *);
 586 extern bfd_boolean _bfd_xcoff_define_common_symbol
 587   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 588 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 589   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 590    struct internal_reloc *, struct internal_syment *, asection **);
 591
 592 /* Functions in coff-ppc.c.  FIXME: These are called by pe.em in the
 593    linker, and so should start with bfd and be declared in bfd.h.  */
 594
 595 extern bfd_boolean ppc_allocate_toc_section
 596   (struct bfd_link_info *);
 597 extern bfd_boolean ppc_process_before_allocation
 598   (bfd *, struct bfd_link_info *);