libcoff-in.h revision 38889
1/* BFD COFF object file private structure. 2 Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 1998 3 Free Software Foundation, Inc. 4 Written by Cygnus Support. 5 6** NOTE: libcoff.h is a GENERATED file. Don't change it; instead, 7** change libcoff-in.h or coffcode.h. 8 9This file is part of BFD, the Binary File Descriptor library. 10 11This program is free software; you can redistribute it and/or modify 12it under the terms of the GNU General Public License as published by 13the Free Software Foundation; either version 2 of the License, or 14(at your option) any later version. 15 16This program is distributed in the hope that it will be useful, 17but WITHOUT ANY WARRANTY; without even the implied warranty of 18MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19GNU General Public License for more details. 20 21You should have received a copy of the GNU General Public License 22along with this program; if not, write to the Free Software 23Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 24 25#include "bfdlink.h" 26 27/* Object file tdata; access macros */ 28 29#define coff_data(bfd) ((bfd)->tdata.coff_obj_data) 30#define exec_hdr(bfd) (coff_data(bfd)->hdr) 31#define obj_pe(bfd) (coff_data(bfd)->pe) 32#define obj_symbols(bfd) (coff_data(bfd)->symbols) 33#define obj_sym_filepos(bfd) (coff_data(bfd)->sym_filepos) 34 35#define obj_relocbase(bfd) (coff_data(bfd)->relocbase) 36#define obj_raw_syments(bfd) (coff_data(bfd)->raw_syments) 37#define obj_raw_syment_count(bfd) (coff_data(bfd)->raw_syment_count) 38#define obj_convert(bfd) (coff_data(bfd)->conversion_table) 39#define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size) 40 41#define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms) 42#define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms) 43#define obj_coff_strings(bfd) (coff_data (bfd)->strings) 44#define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings) 45#define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes) 46 47#define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map) 48 49/* `Tdata' information kept for COFF files. */ 50 51typedef 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 int 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 PTR external_syms; 78 /* If this is true, the external_syms may not be freed. */ 79 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 boolean keep_strings; 86 87 /* is this a PE format coff file */ 88 int pe; 89 /* Used by the COFF backend linker. */ 90 struct coff_link_hash_entry **sym_hashes; 91 92 /* used by the pe linker for PowerPC */ 93 int *local_toc_sym_map; 94 95 struct bfd_link_info *link_info; 96 97 /* Used by coff_find_nearest_line. */ 98 PTR line_info; 99 100 /* Copy of some of the f_flags bits in the COFF filehdr structure, 101 used by ARM code. */ 102 flagword flags; 103 104} coff_data_type; 105 106/* Tdata for pe image files. */ 107typedef struct pe_tdata 108{ 109 coff_data_type coff; 110 struct internal_extra_pe_aouthdr pe_opthdr; 111 int dll; 112 int has_reloc_section; 113 boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *)); 114 flagword real_flags; 115} pe_data_type; 116 117#define pe_data(bfd) ((bfd)->tdata.pe_obj_data) 118 119/* Tdata for XCOFF files. */ 120 121struct xcoff_tdata 122{ 123 /* Basic COFF information. */ 124 coff_data_type coff; 125 126 /* True if a large a.out header should be generated. */ 127 boolean full_aouthdr; 128 129 /* TOC value. */ 130 bfd_vma toc; 131 132 /* Index of section holding TOC. */ 133 int sntoc; 134 135 /* Index of section holding entry point. */ 136 int snentry; 137 138 /* .text alignment from optional header. */ 139 int text_align_power; 140 141 /* .data alignment from optional header. */ 142 int data_align_power; 143 144 /* modtype from optional header. */ 145 short modtype; 146 147 /* cputype from optional header. */ 148 short cputype; 149 150 /* maxdata from optional header. */ 151 bfd_size_type maxdata; 152 153 /* maxstack from optional header. */ 154 bfd_size_type maxstack; 155 156 /* Used by the XCOFF backend linker. */ 157 asection **csects; 158 unsigned long *debug_indices; 159 unsigned int import_file_id; 160}; 161 162#define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data) 163 164/* We take the address of the first element of a asymbol to ensure that the 165 * macro is only ever applied to an asymbol. */ 166#define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd))) 167 168/* The used_by_bfd field of a section may be set to a pointer to this 169 structure. */ 170 171struct coff_section_tdata 172{ 173 /* The relocs, swapped into COFF internal form. This may be NULL. */ 174 struct internal_reloc *relocs; 175 /* If this is true, the relocs entry may not be freed. */ 176 boolean keep_relocs; 177 /* The section contents. This may be NULL. */ 178 bfd_byte *contents; 179 /* If this is true, the contents entry may not be freed. */ 180 boolean keep_contents; 181 /* Information cached by coff_find_nearest_line. */ 182 bfd_vma offset; 183 unsigned int i; 184 const char *function; 185 int line_base; 186 /* A pointer used for .stab linking optimizations. */ 187 PTR stab_info; 188 /* Available for individual backends. */ 189 PTR tdata; 190}; 191 192/* An accessor macro for the coff_section_tdata structure. */ 193#define coff_section_data(abfd, sec) \ 194 ((struct coff_section_tdata *) (sec)->used_by_bfd) 195 196/* Tdata for sections in XCOFF files. This is used by the linker. */ 197 198struct xcoff_section_tdata 199{ 200 /* Used for XCOFF csects created by the linker; points to the real 201 XCOFF section which contains this csect. */ 202 asection *enclosing; 203 /* The lineno_count field for the enclosing section, because we are 204 going to clobber it there. */ 205 unsigned int lineno_count; 206 /* The first and one past the last symbol indices for symbols used 207 by this csect. */ 208 unsigned long first_symndx; 209 unsigned long last_symndx; 210}; 211 212/* An accessor macro the xcoff_section_tdata structure. */ 213#define xcoff_section_data(abfd, sec) \ 214 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata) 215 216/* Tdata for sections in PEI image files. */ 217 218struct pei_section_tdata 219{ 220 /* The virtual size of the section. */ 221 bfd_size_type virt_size; 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 230struct 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 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}; 253 254/* COFF linker hash table. */ 255 256struct coff_link_hash_table 257{ 258 struct bfd_link_hash_table root; 259 /* A pointer to information used to link stabs in sections. */ 260 PTR stab_info; 261}; 262 263/* Look up an entry in a COFF linker hash table. */ 264 265#define coff_link_hash_lookup(table, string, create, copy, follow) \ 266 ((struct coff_link_hash_entry *) \ 267 bfd_link_hash_lookup (&(table)->root, (string), (create), \ 268 (copy), (follow))) 269 270/* Traverse a COFF linker hash table. */ 271 272#define coff_link_hash_traverse(table, func, info) \ 273 (bfd_link_hash_traverse \ 274 (&(table)->root, \ 275 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ 276 (info))) 277 278/* Get the COFF linker hash table from a link_info structure. */ 279 280#define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash)) 281 282/* Functions in coffgen.c. */ 283extern const bfd_target *coff_object_p PARAMS ((bfd *)); 284extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int)); 285extern long coff_get_symtab_upper_bound PARAMS ((bfd *)); 286extern long coff_get_symtab PARAMS ((bfd *, asymbol **)); 287extern int coff_count_linenumbers PARAMS ((bfd *)); 288extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *)); 289extern boolean coff_renumber_symbols PARAMS ((bfd *, int *)); 290extern void coff_mangle_symbols PARAMS ((bfd *)); 291extern boolean coff_write_symbols PARAMS ((bfd *)); 292extern boolean coff_write_linenumbers PARAMS ((bfd *)); 293extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *)); 294extern asymbol *coff_section_symbol PARAMS ((bfd *, char *)); 295extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *)); 296extern const char *_bfd_coff_read_string_table PARAMS ((bfd *)); 297extern boolean _bfd_coff_free_symbols PARAMS ((bfd *)); 298extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *)); 299extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr)); 300extern asymbol *coff_make_empty_symbol PARAMS ((bfd *)); 301extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *, 302 bfd_print_symbol_type how)); 303extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *, 304 symbol_info *ret)); 305extern boolean _bfd_coff_is_local_label_name PARAMS ((bfd *, const char *)); 306extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR, 307 unsigned long)); 308extern boolean coff_find_nearest_line PARAMS ((bfd *, 309 asection *, 310 asymbol **, 311 bfd_vma offset, 312 CONST char **filename_ptr, 313 CONST char **functionname_ptr, 314 unsigned int *line_ptr)); 315extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc)); 316extern boolean bfd_coff_reloc16_relax_section 317 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *)); 318extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents 319 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, 320 bfd_byte *, boolean relocateable, asymbol **)); 321extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *, 322 struct bfd_link_info *, 323 asection *)); 324extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip, 325 asection *input_section, 326 bfd_vma val)); 327 328/* Functions and types in cofflink.c. */ 329 330#define STRING_SIZE_SIZE (4) 331 332/* We use a hash table to merge identical enum, struct, and union 333 definitions in the linker. */ 334 335/* Information we keep for a single element (an enum value, a 336 structure or union field) in the debug merge hash table. */ 337 338struct coff_debug_merge_element 339{ 340 /* Next element. */ 341 struct coff_debug_merge_element *next; 342 343 /* Name. */ 344 const char *name; 345 346 /* Type. */ 347 unsigned int type; 348 349 /* Symbol index for complex type. */ 350 long tagndx; 351}; 352 353/* A linked list of debug merge entries for a given name. */ 354 355struct coff_debug_merge_type 356{ 357 /* Next type with the same name. */ 358 struct coff_debug_merge_type *next; 359 360 /* Class of type. */ 361 int class; 362 363 /* Symbol index where this type is defined. */ 364 long indx; 365 366 /* List of elements. */ 367 struct coff_debug_merge_element *elements; 368}; 369 370/* Information we store in the debug merge hash table. */ 371 372struct coff_debug_merge_hash_entry 373{ 374 struct bfd_hash_entry root; 375 376 /* A list of types with this name. */ 377 struct coff_debug_merge_type *types; 378}; 379 380/* The debug merge hash table. */ 381 382struct coff_debug_merge_hash_table 383{ 384 struct bfd_hash_table root; 385}; 386 387/* Initialize a COFF debug merge hash table. */ 388 389#define coff_debug_merge_hash_table_init(table) \ 390 (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc)) 391 392/* Free a COFF debug merge hash table. */ 393 394#define coff_debug_merge_hash_table_free(table) \ 395 (bfd_hash_table_free (&(table)->root)) 396 397/* Look up an entry in a COFF debug merge hash table. */ 398 399#define coff_debug_merge_hash_lookup(table, string, create, copy) \ 400 ((struct coff_debug_merge_hash_entry *) \ 401 bfd_hash_lookup (&(table)->root, (string), (create), (copy))) 402 403/* Information we keep for each section in the output file when doing 404 a relocateable link. */ 405 406struct coff_link_section_info 407{ 408 /* The relocs to be output. */ 409 struct internal_reloc *relocs; 410 /* For each reloc against a global symbol whose index was not known 411 when the reloc was handled, the global hash table entry. */ 412 struct coff_link_hash_entry **rel_hashes; 413}; 414 415/* Information that we pass around while doing the final link step. */ 416 417struct coff_final_link_info 418{ 419 /* General link information. */ 420 struct bfd_link_info *info; 421 /* Output BFD. */ 422 bfd *output_bfd; 423 /* Used to indicate failure in traversal routine. */ 424 boolean failed; 425 /* If doing "task linking" set only during the time when we want the 426 global symbol writer to convert the storage class of defined global 427 symbols from global to static. */ 428 boolean global_to_static; 429 /* Hash table for long symbol names. */ 430 struct bfd_strtab_hash *strtab; 431 /* When doing a relocateable link, an array of information kept for 432 each output section, indexed by the target_index field. */ 433 struct coff_link_section_info *section_info; 434 /* Symbol index of last C_FILE symbol (-1 if none). */ 435 long last_file_index; 436 /* Contents of last C_FILE symbol. */ 437 struct internal_syment last_file; 438 /* Symbol index of first aux entry of last .bf symbol with an empty 439 endndx field (-1 if none). */ 440 long last_bf_index; 441 /* Contents of last_bf_index aux entry. */ 442 union internal_auxent last_bf; 443 /* Hash table used to merge debug information. */ 444 struct coff_debug_merge_hash_table debug_merge; 445 /* Buffer large enough to hold swapped symbols of any input file. */ 446 struct internal_syment *internal_syms; 447 /* Buffer large enough to hold sections of symbols of any input file. */ 448 asection **sec_ptrs; 449 /* Buffer large enough to hold output indices of symbols of any 450 input file. */ 451 long *sym_indices; 452 /* Buffer large enough to hold output symbols for any input file. */ 453 bfd_byte *outsyms; 454 /* Buffer large enough to hold external line numbers for any input 455 section. */ 456 bfd_byte *linenos; 457 /* Buffer large enough to hold any input section. */ 458 bfd_byte *contents; 459 /* Buffer large enough to hold external relocs of any input section. */ 460 bfd_byte *external_relocs; 461 /* Buffer large enough to hold swapped relocs of any input section. */ 462 struct internal_reloc *internal_relocs; 463}; 464 465extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc 466 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); 467extern boolean _bfd_coff_link_hash_table_init 468 PARAMS ((struct coff_link_hash_table *, bfd *, 469 struct bfd_hash_entry *(*) (struct bfd_hash_entry *, 470 struct bfd_hash_table *, 471 const char *))); 472extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create 473 PARAMS ((bfd *)); 474extern const char *_bfd_coff_internal_syment_name 475 PARAMS ((bfd *, const struct internal_syment *, char *)); 476extern boolean _bfd_coff_link_add_symbols 477 PARAMS ((bfd *, struct bfd_link_info *)); 478extern boolean _bfd_coff_final_link 479 PARAMS ((bfd *, struct bfd_link_info *)); 480extern struct internal_reloc *_bfd_coff_read_internal_relocs 481 PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean, 482 struct internal_reloc *)); 483extern boolean _bfd_coff_generic_relocate_section 484 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, 485 struct internal_reloc *, struct internal_syment *, asection **)); 486 487extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc 488 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); 489extern boolean _bfd_coff_write_global_sym 490 PARAMS ((struct coff_link_hash_entry *, PTR)); 491extern boolean _bfd_coff_write_task_globals 492 PARAMS ((struct coff_link_hash_entry *, PTR)); 493extern boolean _bfd_coff_link_input_bfd 494 PARAMS ((struct coff_final_link_info *, bfd *)); 495extern boolean _bfd_coff_reloc_link_order 496 PARAMS ((bfd *, struct coff_final_link_info *, asection *, 497 struct bfd_link_order *)); 498 499 500#define coff_get_section_contents_in_window \ 501 _bfd_generic_get_section_contents_in_window 502 503/* Functions in xcofflink.c. */ 504 505extern long _bfd_xcoff_get_dynamic_symtab_upper_bound PARAMS ((bfd *)); 506extern long _bfd_xcoff_canonicalize_dynamic_symtab 507 PARAMS ((bfd *, asymbol **)); 508extern long _bfd_xcoff_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); 509extern long _bfd_xcoff_canonicalize_dynamic_reloc 510 PARAMS ((bfd *, arelent **, asymbol **)); 511extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create 512 PARAMS ((bfd *)); 513extern boolean _bfd_xcoff_bfd_link_add_symbols 514 PARAMS ((bfd *, struct bfd_link_info *)); 515extern boolean _bfd_xcoff_bfd_final_link 516 PARAMS ((bfd *, struct bfd_link_info *)); 517extern boolean _bfd_ppc_xcoff_relocate_section 518 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, 519 struct internal_reloc *, struct internal_syment *, asection **)); 520 521/* Functions in coff-ppc.c. FIXME: These are called be pe.em in the 522 linker, and so should start with bfd and be declared in bfd.h. */ 523 524extern boolean ppc_allocate_toc_section PARAMS ((struct bfd_link_info *)); 525extern boolean ppc_process_before_allocation 526 PARAMS ((bfd *, struct bfd_link_info *)); 527 528/* And more taken from the source .. */ 529 530