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 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
45 /* `Tdata' information kept for COFF files. */
47 typedef struct coff_tdata
49 struct coff_symbol_struct *symbols; /* symtab for input bfd */
50 unsigned int *conversion_table;
54 struct coff_ptr_struct *raw_syments;
55 unsigned int raw_syment_count;
57 /* These are only valid once writing has begun */
60 /* These members communicate important constants about the symbol table
61 to GDB's symbol-reading code. These `constants' unfortunately vary
62 from coff implementation to implementation... */
63 unsigned local_n_btmask;
64 unsigned local_n_btshft;
65 unsigned local_n_tmask;
66 unsigned local_n_tshift;
67 unsigned local_symesz;
68 unsigned local_auxesz;
69 unsigned local_linesz;
71 /* The unswapped external symbols. May be NULL. Read by
72 _bfd_coff_get_external_symbols. */
74 /* If this is true, the external_syms may not be freed. */
77 /* The string table. May be NULL. Read by
78 _bfd_coff_read_string_table. */
80 /* If this is true, the strings may not be freed. */
83 /* is this a PE format coff file */
85 /* Used by the COFF backend linker. */
86 struct coff_link_hash_entry **sym_hashes;
88 /* used by the pe linker for PowerPC */
89 int *local_toc_sym_map;
91 struct bfd_link_info *link_info;
93 /* Used by coff_find_nearest_line. */
97 /* Tdata for pe image files. */
98 typedef struct pe_tdata
101 struct internal_extra_pe_aouthdr pe_opthdr;
103 int has_reloc_section;
104 boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
108 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
110 /* Tdata for XCOFF files. */
114 /* Basic COFF information. */
117 /* True if a large a.out header should be generated. */
118 boolean full_aouthdr;
123 /* Index of section holding TOC. */
126 /* Index of section holding entry point. */
129 /* .text alignment from optional header. */
130 int text_align_power;
132 /* .data alignment from optional header. */
133 int data_align_power;
135 /* modtype from optional header. */
138 /* cputype from optional header. */
141 /* maxdata from optional header. */
142 bfd_size_type maxdata;
144 /* maxstack from optional header. */
145 bfd_size_type maxstack;
147 /* Used by the XCOFF backend linker. */
149 unsigned long *debug_indices;
150 unsigned int import_file_id;
153 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
155 /* We take the address of the first element of a asymbol to ensure that the
156 * macro is only ever applied to an asymbol. */
157 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
159 /* The used_by_bfd field of a section may be set to a pointer to this
162 struct coff_section_tdata
164 /* The relocs, swapped into COFF internal form. This may be NULL. */
165 struct internal_reloc *relocs;
166 /* If this is true, the relocs entry may not be freed. */
168 /* The section contents. This may be NULL. */
170 /* If this is true, the contents entry may not be freed. */
171 boolean keep_contents;
172 /* Information cached by coff_find_nearest_line. */
175 const char *function;
177 /* Available for individual backends. */
181 /* An accessor macro for the coff_section_tdata structure. */
182 #define coff_section_data(abfd, sec) \
183 ((struct coff_section_tdata *) (sec)->used_by_bfd)
185 /* Tdata for sections in XCOFF files. This is used by the linker. */
187 struct xcoff_section_tdata
189 /* Used for XCOFF csects created by the linker; points to the real
190 XCOFF section which contains this csect. */
192 /* The lineno_count field for the enclosing section, because we are
193 going to clobber it there. */
194 unsigned int lineno_count;
195 /* The first and one past the last symbol indices for symbols used
197 unsigned long first_symndx;
198 unsigned long last_symndx;
201 /* An accessor macro the xcoff_section_tdata structure. */
202 #define xcoff_section_data(abfd, sec) \
203 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
205 /* COFF linker hash table entries. */
207 struct coff_link_hash_entry
209 struct bfd_link_hash_entry root;
211 /* Symbol index in output file. Set to -1 initially. Set to -2 if
212 there is a reloc against this symbol. */
221 /* Number of auxiliary entries. */
224 /* BFD to take auxiliary entries from. */
227 /* Pointer to array of auxiliary entries, if any. */
228 union internal_auxent *aux;
231 /* COFF linker hash table. */
233 struct coff_link_hash_table
235 struct bfd_link_hash_table root;
238 /* Look up an entry in a COFF linker hash table. */
240 #define coff_link_hash_lookup(table, string, create, copy, follow) \
241 ((struct coff_link_hash_entry *) \
242 bfd_link_hash_lookup (&(table)->root, (string), (create), \
245 /* Traverse a COFF linker hash table. */
247 #define coff_link_hash_traverse(table, func, info) \
248 (bfd_link_hash_traverse \
250 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
253 /* Get the COFF linker hash table from a link_info structure. */
255 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
257 /* Functions in coffgen.c. */
258 extern const bfd_target *coff_object_p PARAMS ((bfd *));
259 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
260 extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
261 extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
262 extern int coff_count_linenumbers PARAMS ((bfd *));
263 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
264 extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
265 extern void coff_mangle_symbols PARAMS ((bfd *));
266 extern boolean coff_write_symbols PARAMS ((bfd *));
267 extern boolean coff_write_linenumbers PARAMS ((bfd *));
268 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
269 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
270 extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
271 extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
272 extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
273 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
274 extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
275 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
276 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
277 bfd_print_symbol_type how));
278 extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
280 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
282 extern boolean coff_find_nearest_line PARAMS ((bfd *,
286 CONST char **filename_ptr,
287 CONST char **functionname_ptr,
288 unsigned int *line_ptr));
289 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
290 extern boolean bfd_coff_reloc16_relax_section
291 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
292 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
293 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
294 bfd_byte *, boolean relocateable, asymbol **));
295 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
296 struct bfd_link_info *,
298 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
299 asection *input_section,
302 /* Functions in cofflink.c. */
304 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
305 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
306 extern boolean _bfd_coff_link_hash_table_init
307 PARAMS ((struct coff_link_hash_table *, bfd *,
308 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
309 struct bfd_hash_table *,
311 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
313 extern const char *_bfd_coff_internal_syment_name
314 PARAMS ((bfd *, const struct internal_syment *, char *));
315 extern boolean _bfd_coff_link_add_symbols
316 PARAMS ((bfd *, struct bfd_link_info *));
317 extern boolean _bfd_coff_final_link
318 PARAMS ((bfd *, struct bfd_link_info *));
319 extern struct internal_reloc *_bfd_coff_read_internal_relocs
320 PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
321 struct internal_reloc *));
322 extern boolean _bfd_coff_generic_relocate_section
323 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
324 struct internal_reloc *, struct internal_syment *, asection **));
326 #define coff_get_section_contents_in_window \
327 _bfd_generic_get_section_contents_in_window
329 /* Functions in xcofflink.c. */
331 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
333 extern boolean _bfd_xcoff_bfd_link_add_symbols
334 PARAMS ((bfd *, struct bfd_link_info *));
335 extern boolean _bfd_xcoff_bfd_final_link
336 PARAMS ((bfd *, struct bfd_link_info *));
337 extern boolean _bfd_ppc_xcoff_relocate_section
338 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
339 struct internal_reloc *, struct internal_syment *, asection **));
341 /* And more taken from the source .. */
343 typedef struct coff_ptr_struct
346 /* Remembers the offset from the first symbol in the file for
347 this symbol. Generated by coff_renumber_symbols. */
350 /* Should the value of this symbol be renumbered. Used for
351 XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. */
352 unsigned int fix_value : 1;
354 /* Should the tag field of this symbol be renumbered.
355 Created by coff_pointerize_aux. */
356 unsigned int fix_tag : 1;
358 /* Should the endidx field of this symbol be renumbered.
359 Created by coff_pointerize_aux. */
360 unsigned int fix_end : 1;
362 /* Should the x_csect.x_scnlen field be renumbered.
363 Created by coff_pointerize_aux. */
364 unsigned int fix_scnlen : 1;
366 /* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
367 index into the line number entries. Set by
368 coff_slurp_symbol_table. */
369 unsigned int fix_line : 1;
371 /* The container for the symbol structure as read and translated
375 union internal_auxent auxent;
376 struct internal_syment syment;
378 } combined_entry_type;
381 /* Each canonical asymbol really looks like this: */
383 typedef struct coff_symbol_struct
385 /* The actual symbol which the rest of BFD works with */
388 /* A pointer to the hidden information for this symbol */
389 combined_entry_type *native;
391 /* A pointer to the linenumber information for this symbol */
392 struct lineno_cache_entry *lineno;
394 /* Have the line numbers been relocated yet ? */
399 void (*_bfd_coff_swap_aux_in) PARAMS ((
408 void (*_bfd_coff_swap_sym_in) PARAMS ((
413 void (*_bfd_coff_swap_lineno_in) PARAMS ((
418 unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
427 unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
432 unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
437 unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
442 unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
447 unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
452 unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
457 unsigned int _bfd_filhsz;
458 unsigned int _bfd_aoutsz;
459 unsigned int _bfd_scnhsz;
460 unsigned int _bfd_symesz;
461 unsigned int _bfd_auxesz;
462 unsigned int _bfd_relsz;
463 unsigned int _bfd_linesz;
464 boolean _bfd_coff_long_filenames;
465 void (*_bfd_coff_swap_filehdr_in) PARAMS ((
469 void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
473 void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
477 void (*_bfd_coff_swap_reloc_in) PARAMS ((
481 boolean (*_bfd_coff_bad_format_hook) PARAMS ((
483 PTR internal_filehdr));
484 boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
486 PTR internal_filehdr));
487 PTR (*_bfd_coff_mkobject_hook) PARAMS ((
489 PTR internal_filehdr,
490 PTR internal_aouthdr));
491 flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
495 void (*_bfd_set_alignment_hook) PARAMS ((
498 PTR internal_scnhdr));
499 boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
501 boolean (*_bfd_coff_symname_in_debug) PARAMS ((
503 struct internal_syment *sym));
504 boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
506 combined_entry_type *table_base,
507 combined_entry_type *symbol,
509 combined_entry_type *aux));
510 boolean (*_bfd_coff_print_aux) PARAMS ((
513 combined_entry_type *table_base,
514 combined_entry_type *symbol,
515 combined_entry_type *aux,
516 unsigned int indaux));
517 void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
519 struct bfd_link_info *link_info,
520 struct bfd_link_order *link_order,
523 unsigned int *src_ptr,
524 unsigned int *dst_ptr));
525 int (*_bfd_coff_reloc16_estimate) PARAMS ((
527 asection *input_section,
530 struct bfd_link_info *link_info));
531 boolean (*_bfd_coff_sym_is_global) PARAMS ((
533 struct internal_syment *));
534 void (*_bfd_coff_compute_section_file_positions) PARAMS ((
536 boolean (*_bfd_coff_start_final_link) PARAMS ((
538 struct bfd_link_info *info));
539 boolean (*_bfd_coff_relocate_section) PARAMS ((
541 struct bfd_link_info *info,
543 asection *input_section,
545 struct internal_reloc *relocs,
546 struct internal_syment *syms,
547 asection **sections));
548 reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
551 struct internal_reloc *rel,
552 struct coff_link_hash_entry *h,
553 struct internal_syment *sym,
555 boolean (*_bfd_coff_adjust_symndx) PARAMS ((
557 struct bfd_link_info *info,
560 struct internal_reloc *reloc,
561 boolean *adjustedp));
563 } bfd_coff_backend_data;
565 #define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
567 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
568 ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
570 #define bfd_coff_swap_sym_in(a,e,i) \
571 ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
573 #define bfd_coff_swap_lineno_in(a,e,i) \
574 ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
576 #define bfd_coff_swap_reloc_out(abfd, i, o) \
577 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
579 #define bfd_coff_swap_lineno_out(abfd, i, o) \
580 ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
582 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
583 ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
585 #define bfd_coff_swap_sym_out(abfd, i,o) \
586 ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
588 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
589 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
591 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
592 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
594 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
595 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
597 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
598 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
599 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
600 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
601 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
602 #define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
603 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
604 #define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
605 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
606 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
608 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
609 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
611 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
612 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
614 #define bfd_coff_swap_reloc_in(abfd, i, o) \
615 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
617 #define bfd_coff_bad_format_hook(abfd, filehdr) \
618 ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
620 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
621 ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
622 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
623 ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
625 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
626 ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
628 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
629 ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
631 #define bfd_coff_slurp_symbol_table(abfd)\
632 ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
634 #define bfd_coff_symname_in_debug(abfd, sym)\
635 ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
637 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
638 ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
639 (abfd, file, base, symbol, aux, indaux))
641 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
642 ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
643 (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
645 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
646 ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
647 (abfd, section, reloc, shrink, link_info))
649 #define bfd_coff_sym_is_global(abfd, sym)\
650 ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
653 #define bfd_coff_compute_section_file_positions(abfd)\
654 ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
657 #define bfd_coff_start_final_link(obfd, info)\
658 ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
660 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
661 ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
662 (obfd, info, ibfd, o, con, rel, isyms, secs))
663 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
664 ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
665 (abfd, sec, rel, h, sym, addendp))
666 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
667 ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
668 (obfd, info, ibfd, sec, rel, adjustedp))