1 /* BFD COFF object file private structure.
2 Copyright (C) 1990, 91, 92, 93, 94, 1995 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
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 2 of the License, or
10 (at your option) any later version.
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 /* Object file tdata; access macros */
25 #define coff_data(bfd) ((bfd)->tdata.coff_obj_data)
26 #define exec_hdr(bfd) (coff_data(bfd)->hdr)
27 #define obj_pe(bfd) (coff_data(bfd)->pe)
28 #define obj_symbols(bfd) (coff_data(bfd)->symbols)
29 #define obj_sym_filepos(bfd) (coff_data(bfd)->sym_filepos)
31 #define obj_relocbase(bfd) (coff_data(bfd)->relocbase)
32 #define obj_raw_syments(bfd) (coff_data(bfd)->raw_syments)
33 #define obj_raw_syment_count(bfd) (coff_data(bfd)->raw_syment_count)
34 #define obj_convert(bfd) (coff_data(bfd)->conversion_table)
35 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
37 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
38 #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
39 #define obj_coff_strings(bfd) (coff_data (bfd)->strings)
40 #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
41 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
43 /* `Tdata' information kept for COFF files. */
45 typedef struct coff_tdata
47 struct coff_symbol_struct *symbols; /* symtab for input bfd */
48 unsigned int *conversion_table;
52 struct coff_ptr_struct *raw_syments;
53 unsigned int raw_syment_count;
55 /* These are only valid once writing has begun */
58 /* These members communicate important constants about the symbol table
59 to GDB's symbol-reading code. These `constants' unfortunately vary
60 from coff implementation to implementation... */
61 unsigned local_n_btmask;
62 unsigned local_n_btshft;
63 unsigned local_n_tmask;
64 unsigned local_n_tshift;
65 unsigned local_symesz;
66 unsigned local_auxesz;
67 unsigned local_linesz;
69 /* The unswapped external symbols. May be NULL. Read by
70 _bfd_coff_get_external_symbols. */
72 /* If this is true, the external_syms may not be freed. */
75 /* The string table. May be NULL. Read by
76 _bfd_coff_read_string_table. */
78 /* If this is true, the strings may not be freed. */
81 /* is this a PE format coff file */
83 /* Used by the COFF backend linker. */
84 struct coff_link_hash_entry **sym_hashes;
86 struct bfd_link_info *link_info;
89 /* Tdata for pe image files. */
90 typedef struct pe_tdata
93 struct internal_extra_pe_aouthdr pe_opthdr;
95 int has_reloc_section;
98 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
100 /* Tdata for XCOFF files. */
104 /* Basic COFF information. */
110 /* .text alignment from optional header. */
111 int text_align_power;
113 /* .data alignment from optional header. */
114 int data_align_power;
116 /* modtype from optional header. */
119 /* maxdata from optional header. */
120 bfd_size_type maxdata;
122 /* maxstack from optional header. */
123 bfd_size_type maxstack;
126 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
128 /* We take the address of the first element of a asymbol to ensure that the
129 * macro is only ever applied to an asymbol. */
130 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
132 /* The used_by_bfd field of a section may be set to a pointer to this
135 struct coff_section_tdata
137 /* The relocs, swapped into COFF internal form. This may be NULL. */
138 struct internal_reloc *relocs;
139 /* If this is true, the relocs entry may not be freed. */
141 /* The section contents. This may be NULL. */
143 /* If this is true, the contents entry may not be freed. */
144 boolean keep_contents;
145 /* Information cached by coff_find_nearest_line. */
148 const char *function;
150 /* Available for individual backends. */
154 /* An accessor macro for the coff_section_tdata structure. */
155 #define coff_section_data(abfd, sec) \
156 ((struct coff_section_tdata *) (sec)->used_by_bfd)
158 /* COFF linker hash table entries. */
160 struct coff_link_hash_entry
162 struct bfd_link_hash_entry root;
164 /* Symbol index in output file. Set to -1 initially. Set to -2 if
165 there is a reloc against this symbol. */
174 /* Number of auxiliary entries. */
177 /* BFD to take auxiliary entries from. */
180 /* Pointer to array of auxiliary entries, if any. */
181 union internal_auxent *aux;
184 /* COFF linker hash table. */
186 struct coff_link_hash_table
188 struct bfd_link_hash_table root;
191 /* Look up an entry in a COFF linker hash table. */
193 #define coff_link_hash_lookup(table, string, create, copy, follow) \
194 ((struct coff_link_hash_entry *) \
195 bfd_link_hash_lookup (&(table)->root, (string), (create), \
198 /* Traverse a COFF linker hash table. */
200 #define coff_link_hash_traverse(table, func, info) \
201 (bfd_link_hash_traverse \
203 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
206 /* Get the COFF linker hash table from a link_info structure. */
208 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
210 /* Functions in coffgen.c. */
211 extern const bfd_target *coff_object_p PARAMS ((bfd *));
212 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
213 extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
214 extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
215 extern int coff_count_linenumbers PARAMS ((bfd *));
216 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
217 extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
218 extern void coff_mangle_symbols PARAMS ((bfd *));
219 extern boolean coff_write_symbols PARAMS ((bfd *));
220 extern boolean coff_write_linenumbers PARAMS ((bfd *));
221 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
222 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
223 extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
224 extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
225 extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
226 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
227 extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
228 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
229 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
230 bfd_print_symbol_type how));
231 extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
233 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
235 extern boolean coff_find_nearest_line PARAMS ((bfd *,
239 CONST char **filename_ptr,
240 CONST char **functionname_ptr,
241 unsigned int *line_ptr));
242 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
243 extern boolean bfd_coff_reloc16_relax_section
244 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
245 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
246 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
247 bfd_byte *, boolean relocateable, asymbol **));
248 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
249 struct bfd_link_info *,
251 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
252 asection *input_section,
255 /* Functions in cofflink.c. */
257 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
259 extern const char *_bfd_coff_internal_syment_name
260 PARAMS ((bfd *, const struct internal_syment *, char *));
261 extern boolean _bfd_coff_link_add_symbols
262 PARAMS ((bfd *, struct bfd_link_info *));
263 extern boolean _bfd_coff_final_link
264 PARAMS ((bfd *, struct bfd_link_info *));
265 extern struct internal_reloc *_bfd_coff_read_internal_relocs
266 PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
267 struct internal_reloc *));
268 extern boolean _bfd_coff_generic_relocate_section
269 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
270 struct internal_reloc *, struct internal_syment *, asection **));
272 /* And more taken from the source .. */
274 typedef struct coff_ptr_struct
277 /* Remembers the offset from the first symbol in the file for
278 this symbol. Generated by coff_renumber_symbols. */
281 /* Should the value of this symbol be renumbered. Used for
282 XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. */
283 unsigned int fix_value : 1;
285 /* Should the tag field of this symbol be renumbered.
286 Created by coff_pointerize_aux. */
287 unsigned int fix_tag : 1;
289 /* Should the endidx field of this symbol be renumbered.
290 Created by coff_pointerize_aux. */
291 unsigned int fix_end : 1;
293 /* Should the x_csect.x_scnlen field be renumbered.
294 Created by coff_pointerize_aux. */
295 unsigned int fix_scnlen : 1;
297 /* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
298 index into the line number entries. Set by
299 coff_slurp_symbol_table. */
300 unsigned int fix_line : 1;
302 /* The container for the symbol structure as read and translated
306 union internal_auxent auxent;
307 struct internal_syment syment;
309 } combined_entry_type;
312 /* Each canonical asymbol really looks like this: */
314 typedef struct coff_symbol_struct
316 /* The actual symbol which the rest of BFD works with */
319 /* A pointer to the hidden information for this symbol */
320 combined_entry_type *native;
322 /* A pointer to the linenumber information for this symbol */
323 struct lineno_cache_entry *lineno;
325 /* Have the line numbers been relocated yet ? */
330 void (*_bfd_coff_swap_aux_in) PARAMS ((
339 void (*_bfd_coff_swap_sym_in) PARAMS ((
344 void (*_bfd_coff_swap_lineno_in) PARAMS ((
349 unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
358 unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
363 unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
368 unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
373 unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
378 unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
383 unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
388 unsigned int _bfd_filhsz;
389 unsigned int _bfd_aoutsz;
390 unsigned int _bfd_scnhsz;
391 unsigned int _bfd_symesz;
392 unsigned int _bfd_auxesz;
393 unsigned int _bfd_relsz;
394 unsigned int _bfd_linesz;
395 boolean _bfd_coff_long_filenames;
396 void (*_bfd_coff_swap_filehdr_in) PARAMS ((
400 void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
404 void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
408 void (*_bfd_coff_swap_reloc_in) PARAMS ((
412 boolean (*_bfd_coff_bad_format_hook) PARAMS ((
414 PTR internal_filehdr));
415 boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
417 PTR internal_filehdr));
418 PTR (*_bfd_coff_mkobject_hook) PARAMS ((
420 PTR internal_filehdr,
421 PTR internal_aouthdr));
422 flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
426 void (*_bfd_set_alignment_hook) PARAMS ((
429 PTR internal_scnhdr));
430 boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
432 boolean (*_bfd_coff_symname_in_debug) PARAMS ((
434 struct internal_syment *sym));
435 boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
437 combined_entry_type *table_base,
438 combined_entry_type *symbol,
440 combined_entry_type *aux));
441 boolean (*_bfd_coff_print_aux) PARAMS ((
444 combined_entry_type *table_base,
445 combined_entry_type *symbol,
446 combined_entry_type *aux,
447 unsigned int indaux));
448 void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
450 struct bfd_link_info *link_info,
451 struct bfd_link_order *link_order,
454 unsigned int *src_ptr,
455 unsigned int *dst_ptr));
456 int (*_bfd_coff_reloc16_estimate) PARAMS ((
458 asection *input_section,
461 struct bfd_link_info *link_info));
462 boolean (*_bfd_coff_sym_is_global) PARAMS ((
464 struct internal_syment *));
465 void (*_bfd_coff_compute_section_file_positions) PARAMS ((
467 boolean (*_bfd_coff_start_final_link) PARAMS ((
469 struct bfd_link_info *info));
470 boolean (*_bfd_coff_relocate_section) PARAMS ((
472 struct bfd_link_info *info,
474 asection *input_section,
476 struct internal_reloc *relocs,
477 struct internal_syment *syms,
478 asection **sections));
479 reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
482 struct internal_reloc *rel,
483 struct coff_link_hash_entry *h,
484 struct internal_syment *sym,
486 boolean (*_bfd_coff_adjust_symndx) PARAMS ((
488 struct bfd_link_info *info,
491 struct internal_reloc *reloc,
492 boolean *adjustedp));
494 } bfd_coff_backend_data;
496 #define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
498 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
499 ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
501 #define bfd_coff_swap_sym_in(a,e,i) \
502 ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
504 #define bfd_coff_swap_lineno_in(a,e,i) \
505 ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
507 #define bfd_coff_swap_reloc_out(abfd, i, o) \
508 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
510 #define bfd_coff_swap_lineno_out(abfd, i, o) \
511 ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
513 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
514 ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
516 #define bfd_coff_swap_sym_out(abfd, i,o) \
517 ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
519 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
520 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
522 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
523 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
525 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
526 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
528 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
529 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
530 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
531 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
532 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
533 #define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
534 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
535 #define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
536 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
537 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
539 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
540 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
542 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
543 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
545 #define bfd_coff_swap_reloc_in(abfd, i, o) \
546 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
548 #define bfd_coff_bad_format_hook(abfd, filehdr) \
549 ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
551 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
552 ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
553 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
554 ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
556 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
557 ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
559 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
560 ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
562 #define bfd_coff_slurp_symbol_table(abfd)\
563 ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
565 #define bfd_coff_symname_in_debug(abfd, sym)\
566 ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
568 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
569 ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
570 (abfd, file, base, symbol, aux, indaux))
572 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
573 ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
574 (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
576 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
577 ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
578 (abfd, section, reloc, shrink, link_info))
580 #define bfd_coff_sym_is_global(abfd, sym)\
581 ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
584 #define bfd_coff_compute_section_file_positions(abfd)\
585 ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
588 #define bfd_coff_start_final_link(obfd, info)\
589 ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
591 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
592 ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
593 (obfd, info, ibfd, o, con, rel, isyms, secs))
594 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
595 ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
596 (abfd, sec, rel, h, sym, addendp))
597 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
598 ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
599 (obfd, info, ibfd, sec, rel, adjustedp))