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. */
108 /* True if a large a.out header should be generated. */
109 boolean full_aouthdr;
114 /* Section holding TOC. */
115 asection *toc_section;
117 /* Section holding entry point. */
118 asection *entry_section;
120 /* .text alignment from optional header. */
121 int text_align_power;
123 /* .data alignment from optional header. */
124 int data_align_power;
126 /* modtype from optional header. */
129 /* cputype from optional header. */
132 /* maxdata from optional header. */
133 bfd_size_type maxdata;
135 /* maxstack from optional header. */
136 bfd_size_type maxstack;
138 /* Used by the XCOFF backend linker. */
140 unsigned long *debug_indices;
141 unsigned int import_file_id;
144 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
146 /* We take the address of the first element of a asymbol to ensure that the
147 * macro is only ever applied to an asymbol. */
148 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
150 /* The used_by_bfd field of a section may be set to a pointer to this
153 struct coff_section_tdata
155 /* The relocs, swapped into COFF internal form. This may be NULL. */
156 struct internal_reloc *relocs;
157 /* If this is true, the relocs entry may not be freed. */
159 /* The section contents. This may be NULL. */
161 /* If this is true, the contents entry may not be freed. */
162 boolean keep_contents;
163 /* Information cached by coff_find_nearest_line. */
166 const char *function;
168 /* Available for individual backends. */
172 /* An accessor macro for the coff_section_tdata structure. */
173 #define coff_section_data(abfd, sec) \
174 ((struct coff_section_tdata *) (sec)->used_by_bfd)
176 /* Tdata for sections in XCOFF files. This is used by the linker. */
178 struct xcoff_section_tdata
180 /* Used for XCOFF csects created by the linker; points to the real
181 XCOFF section which contains this csect. */
183 /* The lineno_count field for the enclosing section, because we are
184 going to clobber it there. */
185 unsigned int lineno_count;
186 /* The first and one past the last symbol indices for symbols used
188 unsigned long first_symndx;
189 unsigned long last_symndx;
192 /* An accessor macro the xcoff_section_tdata structure. */
193 #define xcoff_section_data(abfd, sec) \
194 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
196 /* COFF linker hash table entries. */
198 struct coff_link_hash_entry
200 struct bfd_link_hash_entry root;
202 /* Symbol index in output file. Set to -1 initially. Set to -2 if
203 there is a reloc against this symbol. */
212 /* Number of auxiliary entries. */
215 /* BFD to take auxiliary entries from. */
218 /* Pointer to array of auxiliary entries, if any. */
219 union internal_auxent *aux;
222 /* COFF linker hash table. */
224 struct coff_link_hash_table
226 struct bfd_link_hash_table root;
229 /* Look up an entry in a COFF linker hash table. */
231 #define coff_link_hash_lookup(table, string, create, copy, follow) \
232 ((struct coff_link_hash_entry *) \
233 bfd_link_hash_lookup (&(table)->root, (string), (create), \
236 /* Traverse a COFF linker hash table. */
238 #define coff_link_hash_traverse(table, func, info) \
239 (bfd_link_hash_traverse \
241 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
244 /* Get the COFF linker hash table from a link_info structure. */
246 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
248 /* Functions in coffgen.c. */
249 extern const bfd_target *coff_object_p PARAMS ((bfd *));
250 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
251 extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
252 extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
253 extern int coff_count_linenumbers PARAMS ((bfd *));
254 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
255 extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
256 extern void coff_mangle_symbols PARAMS ((bfd *));
257 extern boolean coff_write_symbols PARAMS ((bfd *));
258 extern boolean coff_write_linenumbers PARAMS ((bfd *));
259 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
260 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
261 extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
262 extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
263 extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
264 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
265 extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
266 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
267 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
268 bfd_print_symbol_type how));
269 extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
271 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
273 extern boolean coff_find_nearest_line PARAMS ((bfd *,
277 CONST char **filename_ptr,
278 CONST char **functionname_ptr,
279 unsigned int *line_ptr));
280 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
281 extern boolean bfd_coff_reloc16_relax_section
282 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
283 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
284 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
285 bfd_byte *, boolean relocateable, asymbol **));
286 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
287 struct bfd_link_info *,
289 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
290 asection *input_section,
293 /* Functions in cofflink.c. */
295 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
296 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
297 extern boolean _bfd_coff_link_hash_table_init
298 PARAMS ((struct coff_link_hash_table *, bfd *,
299 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
300 struct bfd_hash_table *,
302 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
304 extern const char *_bfd_coff_internal_syment_name
305 PARAMS ((bfd *, const struct internal_syment *, char *));
306 extern boolean _bfd_coff_link_add_symbols
307 PARAMS ((bfd *, struct bfd_link_info *));
308 extern boolean _bfd_coff_final_link
309 PARAMS ((bfd *, struct bfd_link_info *));
310 extern struct internal_reloc *_bfd_coff_read_internal_relocs
311 PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
312 struct internal_reloc *));
313 extern boolean _bfd_coff_generic_relocate_section
314 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
315 struct internal_reloc *, struct internal_syment *, asection **));
317 #define coff_get_section_contents_in_window \
318 _bfd_generic_get_section_contents_in_window
320 /* Functions in xcofflink.c. */
322 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
324 extern boolean _bfd_xcoff_bfd_link_add_symbols
325 PARAMS ((bfd *, struct bfd_link_info *));
326 extern boolean _bfd_xcoff_bfd_final_link
327 PARAMS ((bfd *, struct bfd_link_info *));
328 extern boolean _bfd_ppc_xcoff_relocate_section
329 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
330 struct internal_reloc *, struct internal_syment *, asection **));
332 /* And more taken from the source .. */
334 typedef struct coff_ptr_struct
337 /* Remembers the offset from the first symbol in the file for
338 this symbol. Generated by coff_renumber_symbols. */
341 /* Should the value of this symbol be renumbered. Used for
342 XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. */
343 unsigned int fix_value : 1;
345 /* Should the tag field of this symbol be renumbered.
346 Created by coff_pointerize_aux. */
347 unsigned int fix_tag : 1;
349 /* Should the endidx field of this symbol be renumbered.
350 Created by coff_pointerize_aux. */
351 unsigned int fix_end : 1;
353 /* Should the x_csect.x_scnlen field be renumbered.
354 Created by coff_pointerize_aux. */
355 unsigned int fix_scnlen : 1;
357 /* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
358 index into the line number entries. Set by
359 coff_slurp_symbol_table. */
360 unsigned int fix_line : 1;
362 /* The container for the symbol structure as read and translated
366 union internal_auxent auxent;
367 struct internal_syment syment;
369 } combined_entry_type;
372 /* Each canonical asymbol really looks like this: */
374 typedef struct coff_symbol_struct
376 /* The actual symbol which the rest of BFD works with */
379 /* A pointer to the hidden information for this symbol */
380 combined_entry_type *native;
382 /* A pointer to the linenumber information for this symbol */
383 struct lineno_cache_entry *lineno;
385 /* Have the line numbers been relocated yet ? */
390 void (*_bfd_coff_swap_aux_in) PARAMS ((
399 void (*_bfd_coff_swap_sym_in) PARAMS ((
404 void (*_bfd_coff_swap_lineno_in) PARAMS ((
409 unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
418 unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
423 unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
428 unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
433 unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
438 unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
443 unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
448 unsigned int _bfd_filhsz;
449 unsigned int _bfd_aoutsz;
450 unsigned int _bfd_scnhsz;
451 unsigned int _bfd_symesz;
452 unsigned int _bfd_auxesz;
453 unsigned int _bfd_relsz;
454 unsigned int _bfd_linesz;
455 boolean _bfd_coff_long_filenames;
456 void (*_bfd_coff_swap_filehdr_in) PARAMS ((
460 void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
464 void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
468 void (*_bfd_coff_swap_reloc_in) PARAMS ((
472 boolean (*_bfd_coff_bad_format_hook) PARAMS ((
474 PTR internal_filehdr));
475 boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
477 PTR internal_filehdr));
478 PTR (*_bfd_coff_mkobject_hook) PARAMS ((
480 PTR internal_filehdr,
481 PTR internal_aouthdr));
482 flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
486 void (*_bfd_set_alignment_hook) PARAMS ((
489 PTR internal_scnhdr));
490 boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
492 boolean (*_bfd_coff_symname_in_debug) PARAMS ((
494 struct internal_syment *sym));
495 boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
497 combined_entry_type *table_base,
498 combined_entry_type *symbol,
500 combined_entry_type *aux));
501 boolean (*_bfd_coff_print_aux) PARAMS ((
504 combined_entry_type *table_base,
505 combined_entry_type *symbol,
506 combined_entry_type *aux,
507 unsigned int indaux));
508 void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
510 struct bfd_link_info *link_info,
511 struct bfd_link_order *link_order,
514 unsigned int *src_ptr,
515 unsigned int *dst_ptr));
516 int (*_bfd_coff_reloc16_estimate) PARAMS ((
518 asection *input_section,
521 struct bfd_link_info *link_info));
522 boolean (*_bfd_coff_sym_is_global) PARAMS ((
524 struct internal_syment *));
525 void (*_bfd_coff_compute_section_file_positions) PARAMS ((
527 boolean (*_bfd_coff_start_final_link) PARAMS ((
529 struct bfd_link_info *info));
530 boolean (*_bfd_coff_relocate_section) PARAMS ((
532 struct bfd_link_info *info,
534 asection *input_section,
536 struct internal_reloc *relocs,
537 struct internal_syment *syms,
538 asection **sections));
539 reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
542 struct internal_reloc *rel,
543 struct coff_link_hash_entry *h,
544 struct internal_syment *sym,
546 boolean (*_bfd_coff_adjust_symndx) PARAMS ((
548 struct bfd_link_info *info,
551 struct internal_reloc *reloc,
552 boolean *adjustedp));
554 } bfd_coff_backend_data;
556 #define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
558 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
559 ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
561 #define bfd_coff_swap_sym_in(a,e,i) \
562 ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
564 #define bfd_coff_swap_lineno_in(a,e,i) \
565 ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
567 #define bfd_coff_swap_reloc_out(abfd, i, o) \
568 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
570 #define bfd_coff_swap_lineno_out(abfd, i, o) \
571 ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
573 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
574 ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
576 #define bfd_coff_swap_sym_out(abfd, i,o) \
577 ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
579 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
580 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
582 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
583 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
585 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
586 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
588 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
589 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
590 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
591 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
592 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
593 #define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
594 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
595 #define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
596 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
597 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
599 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
600 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
602 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
603 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
605 #define bfd_coff_swap_reloc_in(abfd, i, o) \
606 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
608 #define bfd_coff_bad_format_hook(abfd, filehdr) \
609 ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
611 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
612 ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
613 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
614 ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
616 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
617 ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
619 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
620 ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
622 #define bfd_coff_slurp_symbol_table(abfd)\
623 ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
625 #define bfd_coff_symname_in_debug(abfd, sym)\
626 ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
628 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
629 ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
630 (abfd, file, base, symbol, aux, indaux))
632 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
633 ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
634 (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
636 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
637 ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
638 (abfd, section, reloc, shrink, link_info))
640 #define bfd_coff_sym_is_global(abfd, sym)\
641 ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
644 #define bfd_coff_compute_section_file_positions(abfd)\
645 ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
648 #define bfd_coff_start_final_link(obfd, info)\
649 ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
651 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
652 ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
653 (obfd, info, ibfd, o, con, rel, isyms, secs))
654 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
655 ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
656 (abfd, sec, rel, h, sym, addendp))
657 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
658 ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
659 (obfd, info, ibfd, sec, rel, adjustedp))