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)
101 /* We take the address of the first element of a asymbol to ensure that the
102 * macro is only ever applied to an asymbol. */
103 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
105 /* The used_by_bfd field of a section may be set to a pointer to this
108 struct coff_section_tdata
110 /* The relocs, swapped into COFF internal form. This may be NULL. */
111 struct internal_reloc *relocs;
112 /* If this is true, the relocs entry may not be freed. */
114 /* The section contents. This may be NULL. */
116 /* If this is true, the contents entry may not be freed. */
117 boolean keep_contents;
120 /* An accessor macro for the coff_section_tdata structure. */
121 #define coff_section_data(abfd, sec) \
122 ((struct coff_section_tdata *) (sec)->used_by_bfd)
124 /* COFF linker hash table entries. */
126 struct coff_link_hash_entry
128 struct bfd_link_hash_entry root;
130 /* Symbol index in output file. Set to -1 initially. Set to -2 if
131 there is a reloc against this symbol. */
140 /* Number of auxiliary entries. */
143 /* BFD to take auxiliary entries from. */
146 /* Pointer to array of auxiliary entries, if any. */
147 union internal_auxent *aux;
150 /* COFF linker hash table. */
152 struct coff_link_hash_table
154 struct bfd_link_hash_table root;
157 /* Look up an entry in a COFF linker hash table. */
159 #define coff_link_hash_lookup(table, string, create, copy, follow) \
160 ((struct coff_link_hash_entry *) \
161 bfd_link_hash_lookup (&(table)->root, (string), (create), \
164 /* Traverse a COFF linker hash table. */
166 #define coff_link_hash_traverse(table, func, info) \
167 (bfd_link_hash_traverse \
169 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
172 /* Get the COFF linker hash table from a link_info structure. */
174 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
176 /* Functions in coffgen.c. */
177 extern const bfd_target *coff_object_p PARAMS ((bfd *));
178 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
179 extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
180 extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
181 extern int coff_count_linenumbers PARAMS ((bfd *));
182 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
183 extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
184 extern void coff_mangle_symbols PARAMS ((bfd *));
185 extern boolean coff_write_symbols PARAMS ((bfd *));
186 extern boolean coff_write_linenumbers PARAMS ((bfd *));
187 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
188 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
189 extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
190 extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
191 extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
192 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
193 extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
194 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
195 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
196 bfd_print_symbol_type how));
197 extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
199 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
201 extern boolean coff_find_nearest_line PARAMS ((bfd *,
205 CONST char **filename_ptr,
206 CONST char **functionname_ptr,
207 unsigned int *line_ptr));
208 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
209 extern boolean bfd_coff_reloc16_relax_section
210 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
211 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
212 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
213 bfd_byte *, boolean relocateable, asymbol **));
214 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
215 struct bfd_link_info *,
217 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
218 asection *input_section,
221 /* Functions in cofflink.c. */
223 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
225 extern boolean _bfd_coff_link_add_symbols
226 PARAMS ((bfd *, struct bfd_link_info *));
227 extern boolean _bfd_coff_final_link
228 PARAMS ((bfd *, struct bfd_link_info *));
229 extern struct internal_reloc *_bfd_coff_read_internal_relocs
230 PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
231 struct internal_reloc *));
232 extern boolean _bfd_coff_generic_relocate_section
233 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
234 struct internal_reloc *, struct internal_syment *, asection **));
236 /* And more taken from the source .. */
238 typedef struct coff_ptr_struct
241 /* Remembers the offset from the first symbol in the file for
242 this symbol. Generated by coff_renumber_symbols. */
245 /* Should the value of this symbol be renumbered. Used for
246 XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. */
247 unsigned int fix_value : 1;
249 /* Should the tag field of this symbol be renumbered.
250 Created by coff_pointerize_aux. */
251 unsigned int fix_tag : 1;
253 /* Should the endidx field of this symbol be renumbered.
254 Created by coff_pointerize_aux. */
255 unsigned int fix_end : 1;
257 /* Should the x_csect.x_scnlen field be renumbered.
258 Created by coff_slurp_symbol_table. */
259 unsigned int fix_scnlen : 1;
261 /* The container for the symbol structure as read and translated
265 union internal_auxent auxent;
266 struct internal_syment syment;
268 } combined_entry_type;
271 /* Each canonical asymbol really looks like this: */
273 typedef struct coff_symbol_struct
275 /* The actual symbol which the rest of BFD works with */
278 /* A pointer to the hidden information for this symbol */
279 combined_entry_type *native;
281 /* A pointer to the linenumber information for this symbol */
282 struct lineno_cache_entry *lineno;
284 /* Have the line numbers been relocated yet ? */
289 void (*_bfd_coff_swap_aux_in) PARAMS ((
298 void (*_bfd_coff_swap_sym_in) PARAMS ((
303 void (*_bfd_coff_swap_lineno_in) PARAMS ((
308 unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
317 unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
322 unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
327 unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
332 unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
337 unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
342 unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
347 unsigned int _bfd_filhsz;
348 unsigned int _bfd_aoutsz;
349 unsigned int _bfd_scnhsz;
350 unsigned int _bfd_symesz;
351 unsigned int _bfd_auxesz;
352 unsigned int _bfd_relsz;
353 unsigned int _bfd_linesz;
354 boolean _bfd_coff_long_filenames;
355 void (*_bfd_coff_swap_filehdr_in) PARAMS ((
359 void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
363 void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
367 void (*_bfd_coff_swap_reloc_in) PARAMS ((
371 boolean (*_bfd_coff_bad_format_hook) PARAMS ((
373 PTR internal_filehdr));
374 boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
376 PTR internal_filehdr));
377 PTR (*_bfd_coff_mkobject_hook) PARAMS ((
379 PTR internal_filehdr,
380 PTR internal_aouthdr));
381 flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
385 asection *(*_bfd_make_section_hook) PARAMS ((
388 void (*_bfd_set_alignment_hook) PARAMS ((
391 PTR internal_scnhdr));
392 boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
394 boolean (*_bfd_coff_symname_in_debug) PARAMS ((
396 struct internal_syment *sym));
397 void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
399 struct bfd_link_info *link_info,
400 struct bfd_link_order *link_order,
403 unsigned int *src_ptr,
404 unsigned int *dst_ptr));
405 int (*_bfd_coff_reloc16_estimate) PARAMS ((
407 asection *input_section,
410 struct bfd_link_info *link_info));
411 boolean (*_bfd_coff_sym_is_global) PARAMS ((
413 struct internal_syment *));
414 void (*_bfd_coff_compute_section_file_positions) PARAMS ((
416 boolean (*_bfd_coff_relocate_section) PARAMS ((
418 struct bfd_link_info *info,
420 asection *input_section,
422 struct internal_reloc *relocs,
423 struct internal_syment *syms,
424 asection **sections));
425 reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
428 struct internal_reloc *rel,
429 struct coff_link_hash_entry *h,
430 struct internal_syment *sym,
432 boolean (*_bfd_coff_adjust_symndx) PARAMS ((
434 struct bfd_link_info *info,
437 struct internal_reloc *reloc,
438 boolean *adjustedp));
440 } bfd_coff_backend_data;
442 #define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
444 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
445 ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
447 #define bfd_coff_swap_sym_in(a,e,i) \
448 ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
450 #define bfd_coff_swap_lineno_in(a,e,i) \
451 ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
453 #define bfd_coff_swap_reloc_out(abfd, i, o) \
454 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
456 #define bfd_coff_swap_lineno_out(abfd, i, o) \
457 ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
459 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
460 ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
462 #define bfd_coff_swap_sym_out(abfd, i,o) \
463 ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
465 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
466 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
468 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
469 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
471 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
472 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
474 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
475 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
476 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
477 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
478 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
479 #define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
480 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
481 #define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
482 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
483 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
485 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
486 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
488 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
489 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
491 #define bfd_coff_swap_reloc_in(abfd, i, o) \
492 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
494 #define bfd_coff_bad_format_hook(abfd, filehdr) \
495 ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
497 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
498 ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
499 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
500 ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
502 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
503 ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
505 #define bfd_coff_make_section_hook(abfd, name)\
506 ((coff_backend_info (abfd)->_bfd_make_section_hook) (abfd, name))
508 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
509 ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
511 #define bfd_coff_slurp_symbol_table(abfd)\
512 ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
514 #define bfd_coff_symname_in_debug(abfd, sym)\
515 ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
517 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
518 ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
519 (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
521 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
522 ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
523 (abfd, section, reloc, shrink, link_info))
525 #define bfd_coff_sym_is_global(abfd, sym)\
526 ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
529 #define bfd_coff_compute_section_file_positions(abfd)\
530 ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
533 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
534 ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
535 (obfd, info, ibfd, o, con, rel, isyms, secs))
536 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
537 ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
538 (abfd, sec, rel, h, sym, addendp))
539 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
540 ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
541 (obfd, info, ibfd, sec, rel, adjustedp))