1 /* BFD COFF object file private structure.
2 Copyright (C) 1990, 1991, 1992, 1993, 1994 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., 675 Mass Ave, Cambridge, MA 02139, 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_symbols(bfd) (coff_data(bfd)->symbols)
28 #define obj_sym_filepos(bfd) (coff_data(bfd)->sym_filepos)
30 #define obj_relocbase(bfd) (coff_data(bfd)->relocbase)
31 #define obj_raw_syments(bfd) (coff_data(bfd)->raw_syments)
32 #define obj_raw_syment_count(bfd) (coff_data(bfd)->raw_syment_count)
33 #define obj_convert(bfd) (coff_data(bfd)->conversion_table)
34 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
36 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
37 #define obj_coff_strings(bfd) (coff_data (bfd)->strings)
38 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
40 /* `Tdata' information kept for COFF files. */
42 typedef struct coff_tdata
44 struct coff_symbol_struct
*symbols
; /* symtab for input bfd */
45 unsigned int *conversion_table
;
49 struct coff_ptr_struct
*raw_syments
;
50 unsigned int raw_syment_count
;
52 /* These are only valid once writing has begun */
55 /* These members communicate important constants about the symbol table
56 to GDB's symbol-reading code. These `constants' unfortunately vary
57 from coff implementation to implementation... */
58 unsigned local_n_btmask
;
59 unsigned local_n_btshft
;
60 unsigned local_n_tmask
;
61 unsigned local_n_tshift
;
62 unsigned local_symesz
;
63 unsigned local_auxesz
;
64 unsigned local_linesz
;
66 /* Used by the COFF backend linker. */
69 struct coff_link_hash_entry
**sym_hashes
;
72 /* We take the address of the first element of a asymbol to ensure that the
73 * macro is only ever applied to an asymbol. */
74 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
76 /* COFF linker hash table entries. */
78 struct coff_link_hash_entry
80 struct bfd_link_hash_entry root
;
82 /* Symbol index in output file. Set to -1 initially. Set to -2 if
83 there is a reloc against this symbol. */
92 /* Number of auxiliary entries. */
95 /* BFD to take auxiliary entries from. */
98 /* Pointer to array of auxiliary entries, if any. */
99 union internal_auxent
*aux
;
102 /* COFF linker hash table. */
104 struct coff_link_hash_table
106 struct bfd_link_hash_table root
;
109 /* Look up an entry in a COFF linker hash table. */
111 #define coff_link_hash_lookup(table, string, create, copy, follow) \
112 ((struct coff_link_hash_entry *) \
113 bfd_link_hash_lookup (&(table)->root, (string), (create), \
116 /* Traverse a COFF linker hash table. */
118 #define coff_link_hash_traverse(table, func, info) \
119 (bfd_link_hash_traverse \
121 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
124 /* Get the COFF linker hash table from a link_info structure. */
126 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
128 /* Functions in coffgen.c. */
129 extern const bfd_target
*coff_object_p
PARAMS ((bfd
*));
130 extern struct sec
*coff_section_from_bfd_index
PARAMS ((bfd
*, int));
131 extern long coff_get_symtab_upper_bound
PARAMS ((bfd
*));
132 extern long coff_get_symtab
PARAMS ((bfd
*, asymbol
**));
133 extern int coff_count_linenumbers
PARAMS ((bfd
*));
134 extern struct coff_symbol_struct
*coff_symbol_from
PARAMS ((bfd
*, asymbol
*));
135 extern boolean coff_renumber_symbols
PARAMS ((bfd
*));
136 extern void coff_mangle_symbols
PARAMS ((bfd
*));
137 extern boolean coff_write_symbols
PARAMS ((bfd
*));
138 extern boolean coff_write_linenumbers
PARAMS ((bfd
*));
139 extern alent
*coff_get_lineno
PARAMS ((bfd
*, asymbol
*));
140 extern asymbol
*coff_section_symbol
PARAMS ((bfd
*, char *));
141 extern struct coff_ptr_struct
*coff_get_normalized_symtab
PARAMS ((bfd
*));
142 extern long coff_get_reloc_upper_bound
PARAMS ((bfd
*, sec_ptr
));
143 extern asymbol
*coff_make_empty_symbol
PARAMS ((bfd
*));
144 extern void coff_print_symbol
PARAMS ((bfd
*, PTR filep
, asymbol
*,
145 bfd_print_symbol_type how
));
146 extern void coff_get_symbol_info
PARAMS ((bfd
*, asymbol
*,
148 extern asymbol
*coff_bfd_make_debug_symbol
PARAMS ((bfd
*, PTR
,
150 extern boolean coff_find_nearest_line
PARAMS ((bfd
*,
154 CONST
char **filename_ptr
,
155 CONST
char **functionname_ptr
,
156 unsigned int *line_ptr
));
157 extern int coff_sizeof_headers
PARAMS ((bfd
*, boolean reloc
));
158 extern boolean bfd_coff_reloc16_relax_section
159 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, boolean
*));
160 extern bfd_byte
*bfd_coff_reloc16_get_relocated_section_contents
161 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
162 bfd_byte
*, boolean relocateable
, asymbol
**));
163 extern bfd_vma bfd_coff_reloc16_get_value
PARAMS ((arelent
*,
164 struct bfd_link_info
*,
166 extern void bfd_perform_slip
PARAMS ((bfd
*abfd
, unsigned int slip
,
167 asection
*input_section
,
170 /* Functions in cofflink.c. */
172 extern struct bfd_link_hash_table
*_bfd_coff_link_hash_table_create
174 extern boolean _bfd_coff_link_add_symbols
175 PARAMS ((bfd
*, struct bfd_link_info
*));
176 extern boolean _bfd_coff_final_link
177 PARAMS ((bfd
*, struct bfd_link_info
*));
179 /* And more taken from the source .. */
181 typedef struct coff_ptr_struct
184 /* Remembers the offset from the first symbol in the file for
185 this symbol. Generated by coff_renumber_symbols. */
188 /* Should the value of this symbol be renumbered. Used for
189 XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. */
190 unsigned int fix_value
: 1;
192 /* Should the tag field of this symbol be renumbered.
193 Created by coff_pointerize_aux. */
194 unsigned int fix_tag
: 1;
196 /* Should the endidx field of this symbol be renumbered.
197 Created by coff_pointerize_aux. */
198 unsigned int fix_end
: 1;
200 /* Should the x_csect.x_scnlen field be renumbered.
201 Created by coff_slurp_symbol_table. */
202 unsigned int fix_scnlen
: 1;
204 /* The container for the symbol structure as read and translated
208 union internal_auxent auxent
;
209 struct internal_syment syment
;
211 } combined_entry_type
;
214 /* Each canonical asymbol really looks like this: */
216 typedef struct coff_symbol_struct
218 /* The actual symbol which the rest of BFD works with */
221 /* A pointer to the hidden information for this symbol */
222 combined_entry_type
*native
;
224 /* A pointer to the linenumber information for this symbol */
225 struct lineno_cache_entry
*lineno
;
227 /* Have the line numbers been relocated yet ? */
232 void (*_bfd_coff_swap_aux_in
) PARAMS ((
241 void (*_bfd_coff_swap_sym_in
) PARAMS ((
246 void (*_bfd_coff_swap_lineno_in
) PARAMS ((
251 unsigned int (*_bfd_coff_swap_aux_out
) PARAMS ((
260 unsigned int (*_bfd_coff_swap_sym_out
) PARAMS ((
265 unsigned int (*_bfd_coff_swap_lineno_out
) PARAMS ((
270 unsigned int (*_bfd_coff_swap_reloc_out
) PARAMS ((
275 unsigned int (*_bfd_coff_swap_filehdr_out
) PARAMS ((
280 unsigned int (*_bfd_coff_swap_aouthdr_out
) PARAMS ((
285 unsigned int (*_bfd_coff_swap_scnhdr_out
) PARAMS ((
290 unsigned int _bfd_filhsz
;
291 unsigned int _bfd_aoutsz
;
292 unsigned int _bfd_scnhsz
;
293 unsigned int _bfd_symesz
;
294 unsigned int _bfd_auxesz
;
295 unsigned int _bfd_relsz
;
296 unsigned int _bfd_linesz
;
297 boolean _bfd_coff_long_filenames
;
298 void (*_bfd_coff_swap_filehdr_in
) PARAMS ((
302 void (*_bfd_coff_swap_aouthdr_in
) PARAMS ((
306 void (*_bfd_coff_swap_scnhdr_in
) PARAMS ((
310 void (*_bfd_coff_swap_reloc_in
) PARAMS ((
314 boolean (*_bfd_coff_bad_format_hook
) PARAMS ((
316 PTR internal_filehdr
));
317 boolean (*_bfd_coff_set_arch_mach_hook
) PARAMS ((
319 PTR internal_filehdr
));
320 PTR (*_bfd_coff_mkobject_hook
) PARAMS ((
322 PTR internal_filehdr
,
323 PTR internal_aouthdr
));
324 flagword (*_bfd_styp_to_sec_flags_hook
) PARAMS ((
328 asection
*(*_bfd_make_section_hook
) PARAMS ((
331 void (*_bfd_set_alignment_hook
) PARAMS ((
334 PTR internal_scnhdr
));
335 boolean (*_bfd_coff_slurp_symbol_table
) PARAMS ((
337 boolean (*_bfd_coff_symname_in_debug
) PARAMS ((
339 struct internal_syment
*sym
));
340 void (*_bfd_coff_reloc16_extra_cases
) PARAMS ((
342 struct bfd_link_info
*link_info
,
343 struct bfd_link_order
*link_order
,
346 unsigned int *src_ptr
,
347 unsigned int *dst_ptr
));
348 int (*_bfd_coff_reloc16_estimate
) PARAMS ((
350 asection
*input_section
,
353 struct bfd_link_info
*link_info
));
354 boolean (*_bfd_coff_sym_is_global
) PARAMS ((
356 struct internal_syment
*));
357 void (*_bfd_coff_compute_section_file_positions
) PARAMS ((
359 boolean (*_bfd_coff_relocate_section
) PARAMS ((
361 struct bfd_link_info
*info
,
363 asection
*input_section
,
365 struct internal_reloc
*relocs
,
366 struct internal_syment
*syms
,
367 asection
**sections
));
369 } bfd_coff_backend_data
;
371 #define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
373 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
374 ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
376 #define bfd_coff_swap_sym_in(a,e,i) \
377 ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
379 #define bfd_coff_swap_lineno_in(a,e,i) \
380 ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
382 #define bfd_coff_swap_reloc_out(abfd, i, o) \
383 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
385 #define bfd_coff_swap_lineno_out(abfd, i, o) \
386 ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
388 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
389 ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
391 #define bfd_coff_swap_sym_out(abfd, i,o) \
392 ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
394 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
395 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
397 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
398 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
400 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
401 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
403 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
404 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
405 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
406 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
407 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
408 #define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
409 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
410 #define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
411 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
412 ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
414 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
415 ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
417 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
418 ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
420 #define bfd_coff_swap_reloc_in(abfd, i, o) \
421 ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
423 #define bfd_coff_bad_format_hook(abfd, filehdr) \
424 ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
426 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
427 ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
428 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
429 ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
431 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
432 ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
434 #define bfd_coff_make_section_hook(abfd, name)\
435 ((coff_backend_info (abfd)->_bfd_make_section_hook) (abfd, name))
437 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
438 ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
440 #define bfd_coff_slurp_symbol_table(abfd)\
441 ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
443 #define bfd_coff_symname_in_debug(abfd, sym)\
444 ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
446 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
447 ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
448 (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
450 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
451 ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
452 (abfd, section, reloc, shrink, link_info))
454 #define bfd_coff_sym_is_global(abfd, sym)\
455 ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
458 #define bfd_coff_compute_section_file_positions(abfd)\
459 ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
462 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
463 ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
464 (obfd, info, ibfd, o, con, rel, isyms, secs))