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;
94 /* Tdata for pe image files. */
95 typedef struct pe_tdata
98 struct internal_extra_pe_aouthdr pe_opthdr;
100 int has_reloc_section;
101 boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
105 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
107 /* Tdata for XCOFF files. */
111 /* Basic COFF information. */
114 /* True if a large a.out header should be generated. */
115 boolean full_aouthdr;
120 /* Section holding TOC. */
121 asection *toc_section;
123 /* Section holding entry point. */
124 asection *entry_section;
126 /* .text alignment from optional header. */
127 int text_align_power;
129 /* .data alignment from optional header. */
130 int data_align_power;
132 /* modtype from optional header. */
135 /* cputype from optional header. */
138 /* maxdata from optional header. */
139 bfd_size_type maxdata;
141 /* maxstack from optional header. */
142 bfd_size_type maxstack;
144 /* Used by the XCOFF backend linker. */
146 unsigned long *debug_indices;
147 unsigned int import_file_id;
150 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
152 /* We take the address of the first element of a asymbol to ensure that the
153 * macro is only ever applied to an asymbol. */
154 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
156 /* The used_by_bfd field of a section may be set to a pointer to this
159 struct coff_section_tdata
161 /* The relocs, swapped into COFF internal form. This may be NULL. */
162 struct internal_reloc *relocs;
163 /* If this is true, the relocs entry may not be freed. */
165 /* The section contents. This may be NULL. */
167 /* If this is true, the contents entry may not be freed. */
168 boolean keep_contents;
169 /* Information cached by coff_find_nearest_line. */
172 const char *function;
174 /* Available for individual backends. */
178 /* An accessor macro for the coff_section_tdata structure. */
179 #define coff_section_data(abfd, sec) \
180 ((struct coff_section_tdata *) (sec)->used_by_bfd)
182 /* Tdata for sections in XCOFF files. This is used by the linker. */
184 struct xcoff_section_tdata
186 /* Used for XCOFF csects created by the linker; points to the real
187 XCOFF section which contains this csect. */
189 /* The lineno_count field for the enclosing section, because we are
190 going to clobber it there. */
191 unsigned int lineno_count;
192 /* The first and one past the last symbol indices for symbols used
194 unsigned long first_symndx;
195 unsigned long last_symndx;
198 /* An accessor macro the xcoff_section_tdata structure. */
199 #define xcoff_section_data(abfd, sec) \
200 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
202 /* COFF linker hash table entries. */
204 struct coff_link_hash_entry
206 struct bfd_link_hash_entry root;
208 /* Symbol index in output file. Set to -1 initially. Set to -2 if
209 there is a reloc against this symbol. */
218 /* Number of auxiliary entries. */
221 /* BFD to take auxiliary entries from. */
224 /* Pointer to array of auxiliary entries, if any. */
225 union internal_auxent *aux;
227 /* If this symbol requires an entry in the table of contents, the
228 processor specific backend uses this field to hold the offset
229 into the .toc section. */
233 /* COFF linker hash table. */
235 struct coff_link_hash_table
237 struct bfd_link_hash_table root;
240 /* Look up an entry in a COFF linker hash table. */
242 #define coff_link_hash_lookup(table, string, create, copy, follow) \
243 ((struct coff_link_hash_entry *) \
244 bfd_link_hash_lookup (&(table)->root, (string), (create), \
247 /* Traverse a COFF linker hash table. */
249 #define coff_link_hash_traverse(table, func, info) \
250 (bfd_link_hash_traverse \
252 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
255 /* Get the COFF linker hash table from a link_info structure. */
257 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
259 /* Functions in coffgen.c. */
260 extern const bfd_target *coff_object_p PARAMS ((bfd *));
261 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
262 extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
263 extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
264 extern int coff_count_linenumbers PARAMS ((bfd *));
265 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
266 extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
267 extern void coff_mangle_symbols PARAMS ((bfd *));
268 extern boolean coff_write_symbols PARAMS ((bfd *));
269 extern boolean coff_write_linenumbers PARAMS ((bfd *));
270 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
271 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
272 extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
273 extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
274 extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
275 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
276 extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
277 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
278 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
279 bfd_print_symbol_type how));
280 extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
282 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
284 extern boolean coff_find_nearest_line PARAMS ((bfd *,
288 CONST char **filename_ptr,
289 CONST char **functionname_ptr,
290 unsigned int *line_ptr));
291 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
292 extern boolean bfd_coff_reloc16_relax_section
293 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
294 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
295 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
296 bfd_byte *, boolean relocateable, asymbol **));
297 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
298 struct bfd_link_info *,
300 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
301 asection *input_section,
304 /* Functions in cofflink.c. */
306 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
307 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
308 extern boolean _bfd_coff_link_hash_table_init
309 PARAMS ((struct coff_link_hash_table *, bfd *,
310 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
311 struct bfd_hash_table *,
313 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
315 extern const char *_bfd_coff_internal_syment_name
316 PARAMS ((bfd *, const struct internal_syment *, char *));
317 extern boolean _bfd_coff_link_add_symbols
318 PARAMS ((bfd *, struct bfd_link_info *));
319 extern boolean _bfd_coff_final_link
320 PARAMS ((bfd *, struct bfd_link_info *));
321 extern struct internal_reloc *_bfd_coff_read_internal_relocs
322 PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
323 struct internal_reloc *));
324 extern boolean _bfd_coff_generic_relocate_section
325 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
326 struct internal_reloc *, struct internal_syment *, asection **));
328 #define coff_get_section_contents_in_window \
329 _bfd_generic_get_section_contents_in_window
331 /* Functions in xcofflink.c. */
333 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
335 extern boolean _bfd_xcoff_bfd_link_add_symbols
336 PARAMS ((bfd *, struct bfd_link_info *));
337 extern boolean _bfd_xcoff_bfd_final_link
338 PARAMS ((bfd *, struct bfd_link_info *));
339 extern boolean _bfd_ppc_xcoff_relocate_section
340 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
341 struct internal_reloc *, struct internal_syment *, asection **));
343 /* And more taken from the source .. */
345 typedef struct coff_ptr_struct
348 /* Remembers the offset from the first symbol in the file for
349 this symbol. Generated by coff_renumber_symbols. */
352 /* Should the value of this symbol be renumbered. Used for
353 XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. */
354 unsigned int fix_value : 1;
356 /* Should the tag field of this symbol be renumbered.
357 Created by coff_pointerize_aux. */
358 unsigned int fix_tag : 1;
360 /* Should the endidx field of this symbol be renumbered.
361 Created by coff_pointerize_aux. */
362 unsigned int fix_end : 1;
364 /* Should the x_csect.x_scnlen field be renumbered.
365 Created by coff_pointerize_aux. */
366 unsigned int fix_scnlen : 1;
368 /* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
369 index into the line number entries. Set by
370 coff_slurp_symbol_table. */
371 unsigned int fix_line : 1;
373 /* The container for the symbol structure as read and translated
377 union internal_auxent auxent;
378 struct internal_syment syment;
380 } combined_entry_type;
383 /* Each canonical asymbol really looks like this: */
385 typedef struct coff_symbol_struct
387 /* The actual symbol which the rest of BFD works with */
390 /* A pointer to the hidden information for this symbol */
391 combined_entry_type *native;
393 /* A pointer to the linenumber information for this symbol */
394 struct lineno_cache_entry *lineno;
396 /* Have the line numbers been relocated yet ? */
401 void (*_bfd_coff_swap_aux_in) PARAMS ((
410 void (*_bfd_coff_swap_sym_in) PARAMS ((
415 void (*_bfd_coff_swap_lineno_in) PARAMS ((
420 unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
429 unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
434 unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
439 unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
444 unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
449 unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
454 unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
459 unsigned int _bfd_filhsz;
460 unsigned int _bfd_aoutsz;
461 unsigned int _bfd_scnhsz;
462 unsigned int _bfd_symesz;
463 unsigned int _bfd_auxesz;
464 unsigned int _bfd_relsz;
465 unsigned int _bfd_linesz;
466 boolean _bfd_coff_long_filenames;
467 void (*_bfd_coff_swap_filehdr_in) PARAMS ((
471 void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
475 void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
479 void (*_bfd_coff_swap_reloc_in) PARAMS ((
483 boolean (*_bfd_coff_bad_format_hook) PARAMS ((
485 PTR internal_filehdr));
486 boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
488 PTR internal_filehdr));
489 PTR (*_bfd_coff_mkobject_hook) PARAMS ((
491 PTR internal_filehdr,
492 PTR internal_aouthdr));
493 flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
497 void (*_bfd_set_alignment_hook) PARAMS ((
500 PTR internal_scnhdr));
501 boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
503 boolean (*_bfd_coff_symname_in_debug) PARAMS ((
505 struct internal_syment *sym));
506 boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
508 combined_entry_type *table_base,
509 combined_entry_type *symbol,
511 combined_entry_type *aux));
512 boolean (*_bfd_coff_print_aux) PARAMS ((
515 combined_entry_type *table_base,
516 combined_entry_type *symbol,
517 combined_entry_type *aux,
518 unsigned int indaux));
519 void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
521 struct bfd_link_info *link_info,
522 struct bfd_link_order *link_order,
525 unsigned int *src_ptr,
526 unsigned int *dst_ptr));
527 int (*_bfd_coff_reloc16_estimate) PARAMS ((
529 asection *input_section,
532 struct bfd_link_info *link_info));
533 boolean (*_bfd_coff_sym_is_global) PARAMS ((
535 struct internal_syment *));
536 void (*_bfd_coff_compute_section_file_positions) PARAMS ((
538 boolean (*_bfd_coff_start_final_link) PARAMS ((
540 struct bfd_link_info *info));
541 boolean (*_bfd_coff_relocate_section) PARAMS ((
543 struct bfd_link_info *info,
545 asection *input_section,
547 struct internal_reloc *relocs,
548 struct internal_syment *syms,
549 asection **sections));
550 reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
553 struct internal_reloc *rel,
554 struct coff_link_hash_entry *h,
555 struct internal_syment *sym,
557 boolean (*_bfd_coff_adjust_symndx) PARAMS ((
559 struct bfd_link_info *info,
562 struct internal_reloc *reloc,
563 boolean *adjustedp));
565 } bfd_coff_backend_data;
567 #define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
569 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
570 ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
572 #define bfd_coff_swap_sym_in(a,e,i) \
573 ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
575 #define bfd_coff_swap_lineno_in(a,e,i) \
576 ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
578 #define bfd_coff_swap_reloc_out(abfd, i, o) \
579 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
581 #define bfd_coff_swap_lineno_out(abfd, i, o) \
582 ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
584 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
585 ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
587 #define bfd_coff_swap_sym_out(abfd, i,o) \
588 ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
590 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
591 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
593 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
594 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
596 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
597 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
599 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
600 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
601 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
602 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
603 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
604 #define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
605 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
606 #define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
607 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
608 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
610 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
611 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
613 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
614 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
616 #define bfd_coff_swap_reloc_in(abfd, i, o) \
617 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
619 #define bfd_coff_bad_format_hook(abfd, filehdr) \
620 ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
622 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
623 ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
624 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
625 ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
627 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
628 ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
630 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
631 ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
633 #define bfd_coff_slurp_symbol_table(abfd)\
634 ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
636 #define bfd_coff_symname_in_debug(abfd, sym)\
637 ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
639 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
640 ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
641 (abfd, file, base, symbol, aux, indaux))
643 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
644 ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
645 (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
647 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
648 ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
649 (abfd, section, reloc, shrink, link_info))
651 #define bfd_coff_sym_is_global(abfd, sym)\
652 ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
655 #define bfd_coff_compute_section_file_positions(abfd)\
656 ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
659 #define bfd_coff_start_final_link(obfd, info)\
660 ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
662 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
663 ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
664 (obfd, info, ibfd, o, con, rel, isyms, secs))
665 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
666 ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
667 (abfd, sec, rel, h, sym, addendp))
668 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
669 ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
670 (obfd, info, ibfd, sec, rel, adjustedp))