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;
96 boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
99 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
101 /* Tdata for XCOFF files. */
105 /* Basic COFF information. */
111 /* .text alignment from optional header. */
112 int text_align_power;
114 /* .data alignment from optional header. */
115 int data_align_power;
117 /* modtype from optional header. */
120 /* cputype from optional header. */
123 /* maxdata from optional header. */
124 bfd_size_type maxdata;
126 /* maxstack from optional header. */
127 bfd_size_type maxstack;
129 /* Used by the XCOFF backend linker. */
131 unsigned long *debug_indices;
132 unsigned int import_file_id;
135 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
137 /* We take the address of the first element of a asymbol to ensure that the
138 * macro is only ever applied to an asymbol. */
139 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
141 /* The used_by_bfd field of a section may be set to a pointer to this
144 struct coff_section_tdata
146 /* The relocs, swapped into COFF internal form. This may be NULL. */
147 struct internal_reloc *relocs;
148 /* If this is true, the relocs entry may not be freed. */
150 /* The section contents. This may be NULL. */
152 /* If this is true, the contents entry may not be freed. */
153 boolean keep_contents;
154 /* Information cached by coff_find_nearest_line. */
157 const char *function;
159 /* Available for individual backends. */
163 /* An accessor macro for the coff_section_tdata structure. */
164 #define coff_section_data(abfd, sec) \
165 ((struct coff_section_tdata *) (sec)->used_by_bfd)
167 /* Tdata for sections in XCOFF files. This is used by the linker. */
169 struct xcoff_section_tdata
171 /* Used for XCOFF csects created by the linker; points to the real
172 XCOFF section which contains this csect. */
174 /* The lineno_count field for the enclosing section, because we are
175 going to clobber it there. */
176 unsigned int lineno_count;
177 /* The first and one past the last symbol indices for symbols used
179 unsigned long first_symndx;
180 unsigned long last_symndx;
181 /* The number of .loader relocs in this csect. */
185 /* An accessor macro the xcoff_section_tdata structure. */
186 #define xcoff_section_data(abfd, sec) \
187 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
189 /* COFF linker hash table entries. */
191 struct coff_link_hash_entry
193 struct bfd_link_hash_entry root;
195 /* Symbol index in output file. Set to -1 initially. Set to -2 if
196 there is a reloc against this symbol. */
205 /* Number of auxiliary entries. */
208 /* BFD to take auxiliary entries from. */
211 /* Pointer to array of auxiliary entries, if any. */
212 union internal_auxent *aux;
215 /* COFF linker hash table. */
217 struct coff_link_hash_table
219 struct bfd_link_hash_table root;
222 /* Look up an entry in a COFF linker hash table. */
224 #define coff_link_hash_lookup(table, string, create, copy, follow) \
225 ((struct coff_link_hash_entry *) \
226 bfd_link_hash_lookup (&(table)->root, (string), (create), \
229 /* Traverse a COFF linker hash table. */
231 #define coff_link_hash_traverse(table, func, info) \
232 (bfd_link_hash_traverse \
234 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
237 /* Get the COFF linker hash table from a link_info structure. */
239 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
241 /* Functions in coffgen.c. */
242 extern const bfd_target *coff_object_p PARAMS ((bfd *));
243 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
244 extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
245 extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
246 extern int coff_count_linenumbers PARAMS ((bfd *));
247 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
248 extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
249 extern void coff_mangle_symbols PARAMS ((bfd *));
250 extern boolean coff_write_symbols PARAMS ((bfd *));
251 extern boolean coff_write_linenumbers PARAMS ((bfd *));
252 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
253 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
254 extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
255 extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
256 extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
257 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
258 extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
259 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
260 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
261 bfd_print_symbol_type how));
262 extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
264 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
266 extern boolean coff_find_nearest_line PARAMS ((bfd *,
270 CONST char **filename_ptr,
271 CONST char **functionname_ptr,
272 unsigned int *line_ptr));
273 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
274 extern boolean bfd_coff_reloc16_relax_section
275 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
276 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
277 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
278 bfd_byte *, boolean relocateable, asymbol **));
279 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
280 struct bfd_link_info *,
282 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
283 asection *input_section,
286 /* Functions in cofflink.c. */
288 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
289 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
290 extern boolean _bfd_coff_link_hash_table_init
291 PARAMS ((struct coff_link_hash_table *, bfd *,
292 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
293 struct bfd_hash_table *,
295 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
297 extern const char *_bfd_coff_internal_syment_name
298 PARAMS ((bfd *, const struct internal_syment *, char *));
299 extern boolean _bfd_coff_link_add_symbols
300 PARAMS ((bfd *, struct bfd_link_info *));
301 extern boolean _bfd_coff_final_link
302 PARAMS ((bfd *, struct bfd_link_info *));
303 extern struct internal_reloc *_bfd_coff_read_internal_relocs
304 PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
305 struct internal_reloc *));
306 extern boolean _bfd_coff_generic_relocate_section
307 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
308 struct internal_reloc *, struct internal_syment *, asection **));
310 /* Functions in xcofflink.c. */
312 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
314 extern boolean _bfd_xcoff_bfd_link_add_symbols
315 PARAMS ((bfd *, struct bfd_link_info *));
316 extern boolean _bfd_xcoff_bfd_final_link
317 PARAMS ((bfd *, struct bfd_link_info *));
318 extern boolean _bfd_ppc_xcoff_relocate_section
319 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
320 struct internal_reloc *, struct internal_syment *, asection **));
322 /* And more taken from the source .. */
324 typedef struct coff_ptr_struct
327 /* Remembers the offset from the first symbol in the file for
328 this symbol. Generated by coff_renumber_symbols. */
331 /* Should the value of this symbol be renumbered. Used for
332 XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. */
333 unsigned int fix_value : 1;
335 /* Should the tag field of this symbol be renumbered.
336 Created by coff_pointerize_aux. */
337 unsigned int fix_tag : 1;
339 /* Should the endidx field of this symbol be renumbered.
340 Created by coff_pointerize_aux. */
341 unsigned int fix_end : 1;
343 /* Should the x_csect.x_scnlen field be renumbered.
344 Created by coff_pointerize_aux. */
345 unsigned int fix_scnlen : 1;
347 /* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
348 index into the line number entries. Set by
349 coff_slurp_symbol_table. */
350 unsigned int fix_line : 1;
352 /* The container for the symbol structure as read and translated
356 union internal_auxent auxent;
357 struct internal_syment syment;
359 } combined_entry_type;
362 /* Each canonical asymbol really looks like this: */
364 typedef struct coff_symbol_struct
366 /* The actual symbol which the rest of BFD works with */
369 /* A pointer to the hidden information for this symbol */
370 combined_entry_type *native;
372 /* A pointer to the linenumber information for this symbol */
373 struct lineno_cache_entry *lineno;
375 /* Have the line numbers been relocated yet ? */
380 void (*_bfd_coff_swap_aux_in) PARAMS ((
389 void (*_bfd_coff_swap_sym_in) PARAMS ((
394 void (*_bfd_coff_swap_lineno_in) PARAMS ((
399 unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
408 unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
413 unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
418 unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
423 unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
428 unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
433 unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
438 unsigned int _bfd_filhsz;
439 unsigned int _bfd_aoutsz;
440 unsigned int _bfd_scnhsz;
441 unsigned int _bfd_symesz;
442 unsigned int _bfd_auxesz;
443 unsigned int _bfd_relsz;
444 unsigned int _bfd_linesz;
445 boolean _bfd_coff_long_filenames;
446 void (*_bfd_coff_swap_filehdr_in) PARAMS ((
450 void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
454 void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
458 void (*_bfd_coff_swap_reloc_in) PARAMS ((
462 boolean (*_bfd_coff_bad_format_hook) PARAMS ((
464 PTR internal_filehdr));
465 boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
467 PTR internal_filehdr));
468 PTR (*_bfd_coff_mkobject_hook) PARAMS ((
470 PTR internal_filehdr,
471 PTR internal_aouthdr));
472 flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
476 void (*_bfd_set_alignment_hook) PARAMS ((
479 PTR internal_scnhdr));
480 boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
482 boolean (*_bfd_coff_symname_in_debug) PARAMS ((
484 struct internal_syment *sym));
485 boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
487 combined_entry_type *table_base,
488 combined_entry_type *symbol,
490 combined_entry_type *aux));
491 boolean (*_bfd_coff_print_aux) PARAMS ((
494 combined_entry_type *table_base,
495 combined_entry_type *symbol,
496 combined_entry_type *aux,
497 unsigned int indaux));
498 void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
500 struct bfd_link_info *link_info,
501 struct bfd_link_order *link_order,
504 unsigned int *src_ptr,
505 unsigned int *dst_ptr));
506 int (*_bfd_coff_reloc16_estimate) PARAMS ((
508 asection *input_section,
511 struct bfd_link_info *link_info));
512 boolean (*_bfd_coff_sym_is_global) PARAMS ((
514 struct internal_syment *));
515 void (*_bfd_coff_compute_section_file_positions) PARAMS ((
517 boolean (*_bfd_coff_start_final_link) PARAMS ((
519 struct bfd_link_info *info));
520 boolean (*_bfd_coff_relocate_section) PARAMS ((
522 struct bfd_link_info *info,
524 asection *input_section,
526 struct internal_reloc *relocs,
527 struct internal_syment *syms,
528 asection **sections));
529 reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
532 struct internal_reloc *rel,
533 struct coff_link_hash_entry *h,
534 struct internal_syment *sym,
536 boolean (*_bfd_coff_adjust_symndx) PARAMS ((
538 struct bfd_link_info *info,
541 struct internal_reloc *reloc,
542 boolean *adjustedp));
544 } bfd_coff_backend_data;
546 #define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
548 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
549 ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
551 #define bfd_coff_swap_sym_in(a,e,i) \
552 ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
554 #define bfd_coff_swap_lineno_in(a,e,i) \
555 ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
557 #define bfd_coff_swap_reloc_out(abfd, i, o) \
558 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
560 #define bfd_coff_swap_lineno_out(abfd, i, o) \
561 ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
563 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
564 ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
566 #define bfd_coff_swap_sym_out(abfd, i,o) \
567 ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
569 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
570 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
572 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
573 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
575 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
576 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
578 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
579 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
580 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
581 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
582 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
583 #define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
584 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
585 #define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
586 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
587 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
589 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
590 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
592 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
593 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
595 #define bfd_coff_swap_reloc_in(abfd, i, o) \
596 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
598 #define bfd_coff_bad_format_hook(abfd, filehdr) \
599 ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
601 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
602 ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
603 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
604 ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
606 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
607 ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
609 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
610 ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
612 #define bfd_coff_slurp_symbol_table(abfd)\
613 ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
615 #define bfd_coff_symname_in_debug(abfd, sym)\
616 ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
618 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
619 ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
620 (abfd, file, base, symbol, aux, indaux))
622 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
623 ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
624 (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
626 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
627 ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
628 (abfd, section, reloc, shrink, link_info))
630 #define bfd_coff_sym_is_global(abfd, sym)\
631 ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
634 #define bfd_coff_compute_section_file_positions(abfd)\
635 ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
638 #define bfd_coff_start_final_link(obfd, info)\
639 ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
641 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
642 ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
643 (obfd, info, ibfd, o, con, rel, isyms, secs))
644 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
645 ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
646 (abfd, sec, rel, h, sym, addendp))
647 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
648 ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
649 (obfd, info, ibfd, sec, rel, adjustedp))