Commit | Line | Data |
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252b5132 | 1 | /* Support for the generic parts of COFF, for BFD. |
7898deda NC |
2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
3 | 2000, 2001 | |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Cygnus Support. | |
6 | ||
7 | This file is part of BFD, the Binary File Descriptor library. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | /* Most of this hacked by Steve Chamberlain, sac@cygnus.com. | |
24 | Split out of coffcode.h by Ian Taylor, ian@cygnus.com. */ | |
25 | ||
26 | /* This file contains COFF code that is not dependent on any | |
27 | particular COFF target. There is only one version of this file in | |
28 | libbfd.a, so no target specific code may be put in here. Or, to | |
29 | put it another way, | |
30 | ||
31 | ********** DO NOT PUT TARGET SPECIFIC CODE IN THIS FILE ********** | |
32 | ||
33 | If you need to add some target specific behaviour, add a new hook | |
34 | function to bfd_coff_backend_data. | |
35 | ||
36 | Some of these functions are also called by the ECOFF routines. | |
37 | Those functions may not use any COFF specific information, such as | |
38 | coff_data (abfd). */ | |
39 | ||
40 | #include "bfd.h" | |
41 | #include "sysdep.h" | |
42 | #include "libbfd.h" | |
43 | #include "coff/internal.h" | |
44 | #include "libcoff.h" | |
45 | ||
46 | static void coff_fix_symbol_name | |
47 | PARAMS ((bfd *, asymbol *, combined_entry_type *, bfd_size_type *, | |
48 | asection **, bfd_size_type *)); | |
49 | static boolean coff_write_symbol | |
beb1bf64 | 50 | PARAMS ((bfd *, asymbol *, combined_entry_type *, bfd_vma *, |
252b5132 RH |
51 | bfd_size_type *, asection **, bfd_size_type *)); |
52 | static boolean coff_write_alien_symbol | |
beb1bf64 | 53 | PARAMS ((bfd *, asymbol *, bfd_vma *, bfd_size_type *, |
252b5132 RH |
54 | asection **, bfd_size_type *)); |
55 | static boolean coff_write_native_symbol | |
beb1bf64 | 56 | PARAMS ((bfd *, coff_symbol_type *, bfd_vma *, bfd_size_type *, |
252b5132 RH |
57 | asection **, bfd_size_type *)); |
58 | static void coff_pointerize_aux | |
59 | PARAMS ((bfd *, combined_entry_type *, combined_entry_type *, | |
60 | unsigned int, combined_entry_type *)); | |
61 | static boolean make_a_section_from_file | |
62 | PARAMS ((bfd *, struct internal_scnhdr *, unsigned int)); | |
63 | static const bfd_target *coff_real_object_p | |
244148ad | 64 | PARAMS ((bfd *, unsigned, struct internal_filehdr *, |
252b5132 RH |
65 | struct internal_aouthdr *)); |
66 | static void fixup_symbol_value | |
67 | PARAMS ((bfd *, coff_symbol_type *, struct internal_syment *)); | |
68 | static char *build_debug_section | |
69 | PARAMS ((bfd *)); | |
70 | static char *copy_name | |
71 | PARAMS ((bfd *, char *, int)); | |
72 | ||
73 | #define STRING_SIZE_SIZE (4) | |
74 | ||
75 | /* Take a section header read from a coff file (in HOST byte order), | |
76 | and make a BFD "section" out of it. This is used by ECOFF. */ | |
77 | static boolean | |
78 | make_a_section_from_file (abfd, hdr, target_index) | |
79 | bfd *abfd; | |
80 | struct internal_scnhdr *hdr; | |
81 | unsigned int target_index; | |
82 | { | |
83 | asection *return_section; | |
84 | char *name; | |
7c8ca0e4 NC |
85 | boolean result = true; |
86 | flagword flags; | |
252b5132 RH |
87 | |
88 | name = NULL; | |
89 | ||
90 | /* Handle long section names as in PE. */ | |
91 | if (bfd_coff_long_section_names (abfd) | |
92 | && hdr->s_name[0] == '/') | |
93 | { | |
94 | char buf[SCNNMLEN]; | |
95 | long strindex; | |
96 | char *p; | |
97 | const char *strings; | |
98 | ||
99 | memcpy (buf, hdr->s_name + 1, SCNNMLEN - 1); | |
100 | buf[SCNNMLEN - 1] = '\0'; | |
101 | strindex = strtol (buf, &p, 10); | |
102 | if (*p == '\0' && strindex >= 0) | |
103 | { | |
104 | strings = _bfd_coff_read_string_table (abfd); | |
105 | if (strings == NULL) | |
106 | return false; | |
107 | /* FIXME: For extra safety, we should make sure that | |
108 | strindex does not run us past the end, but right now we | |
109 | don't know the length of the string table. */ | |
110 | strings += strindex; | |
111 | name = bfd_alloc (abfd, strlen (strings) + 1); | |
112 | if (name == NULL) | |
113 | return false; | |
114 | strcpy (name, strings); | |
115 | } | |
116 | } | |
117 | ||
118 | if (name == NULL) | |
119 | { | |
120 | /* Assorted wastage to null-terminate the name, thanks AT&T! */ | |
121 | name = bfd_alloc (abfd, sizeof (hdr->s_name) + 1); | |
122 | if (name == NULL) | |
123 | return false; | |
124 | strncpy (name, (char *) &hdr->s_name[0], sizeof (hdr->s_name)); | |
125 | name[sizeof (hdr->s_name)] = 0; | |
126 | } | |
127 | ||
128 | return_section = bfd_make_section_anyway (abfd, name); | |
129 | if (return_section == NULL) | |
130 | return false; | |
131 | ||
132 | return_section->vma = hdr->s_vaddr; | |
133 | return_section->lma = hdr->s_paddr; | |
134 | return_section->_raw_size = hdr->s_size; | |
135 | return_section->filepos = hdr->s_scnptr; | |
136 | return_section->rel_filepos = hdr->s_relptr; | |
137 | return_section->reloc_count = hdr->s_nreloc; | |
138 | ||
139 | bfd_coff_set_alignment_hook (abfd, return_section, hdr); | |
140 | ||
141 | return_section->line_filepos = hdr->s_lnnoptr; | |
142 | ||
143 | return_section->lineno_count = hdr->s_nlnno; | |
144 | return_section->userdata = NULL; | |
145 | return_section->next = (asection *) NULL; | |
252b5132 | 146 | return_section->target_index = target_index; |
7c8ca0e4 NC |
147 | |
148 | if (! bfd_coff_styp_to_sec_flags_hook (abfd, hdr, name, return_section, | |
149 | & flags)) | |
150 | result = false; | |
151 | ||
152 | return_section->flags = flags; | |
252b5132 RH |
153 | |
154 | /* At least on i386-coff, the line number count for a shared library | |
155 | section must be ignored. */ | |
156 | if ((return_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) | |
157 | return_section->lineno_count = 0; | |
158 | ||
159 | if (hdr->s_nreloc != 0) | |
160 | return_section->flags |= SEC_RELOC; | |
161 | /* FIXME: should this check 'hdr->s_size > 0' */ | |
162 | if (hdr->s_scnptr != 0) | |
163 | return_section->flags |= SEC_HAS_CONTENTS; | |
7c8ca0e4 NC |
164 | |
165 | return result; | |
252b5132 RH |
166 | } |
167 | ||
168 | /* Read in a COFF object and make it into a BFD. This is used by | |
169 | ECOFF as well. */ | |
170 | ||
171 | static const bfd_target * | |
172 | coff_real_object_p (abfd, nscns, internal_f, internal_a) | |
173 | bfd *abfd; | |
174 | unsigned nscns; | |
175 | struct internal_filehdr *internal_f; | |
176 | struct internal_aouthdr *internal_a; | |
177 | { | |
178 | flagword oflags = abfd->flags; | |
179 | bfd_vma ostart = bfd_get_start_address (abfd); | |
180 | PTR tdata; | |
181 | size_t readsize; /* length of file_info */ | |
182 | unsigned int scnhsz; | |
183 | char *external_sections; | |
184 | ||
185 | if (!(internal_f->f_flags & F_RELFLG)) | |
186 | abfd->flags |= HAS_RELOC; | |
187 | if ((internal_f->f_flags & F_EXEC)) | |
188 | abfd->flags |= EXEC_P; | |
189 | if (!(internal_f->f_flags & F_LNNO)) | |
190 | abfd->flags |= HAS_LINENO; | |
191 | if (!(internal_f->f_flags & F_LSYMS)) | |
192 | abfd->flags |= HAS_LOCALS; | |
193 | ||
194 | /* FIXME: How can we set D_PAGED correctly? */ | |
195 | if ((internal_f->f_flags & F_EXEC) != 0) | |
196 | abfd->flags |= D_PAGED; | |
197 | ||
198 | bfd_get_symcount (abfd) = internal_f->f_nsyms; | |
199 | if (internal_f->f_nsyms) | |
200 | abfd->flags |= HAS_SYMS; | |
201 | ||
202 | if (internal_a != (struct internal_aouthdr *) NULL) | |
203 | bfd_get_start_address (abfd) = internal_a->entry; | |
204 | else | |
205 | bfd_get_start_address (abfd) = 0; | |
206 | ||
207 | /* Set up the tdata area. ECOFF uses its own routine, and overrides | |
208 | abfd->flags. */ | |
209 | tdata = bfd_coff_mkobject_hook (abfd, (PTR) internal_f, (PTR) internal_a); | |
210 | if (tdata == NULL) | |
211 | return 0; | |
212 | ||
213 | scnhsz = bfd_coff_scnhsz (abfd); | |
214 | readsize = nscns * scnhsz; | |
215 | external_sections = (char *) bfd_alloc (abfd, readsize); | |
216 | if (!external_sections) | |
217 | goto fail; | |
218 | ||
219 | if (bfd_read ((PTR) external_sections, 1, readsize, abfd) != readsize) | |
220 | goto fail; | |
221 | ||
363d7b14 | 222 | /* Set the arch/mach *before* swapping in sections; section header swapping |
244148ad | 223 | may depend on arch/mach info. */ |
363d7b14 TW |
224 | if (bfd_coff_set_arch_mach_hook (abfd, (PTR) internal_f) == false) |
225 | goto fail; | |
226 | ||
252b5132 RH |
227 | /* Now copy data as required; construct all asections etc */ |
228 | if (nscns != 0) | |
229 | { | |
230 | unsigned int i; | |
231 | for (i = 0; i < nscns; i++) | |
232 | { | |
233 | struct internal_scnhdr tmp; | |
234 | bfd_coff_swap_scnhdr_in (abfd, | |
235 | (PTR) (external_sections + i * scnhsz), | |
236 | (PTR) & tmp); | |
237 | if (! make_a_section_from_file (abfd, &tmp, i + 1)) | |
238 | goto fail; | |
239 | } | |
240 | } | |
241 | ||
242 | /* make_abs_section (abfd); */ | |
243 | ||
252b5132 RH |
244 | return abfd->xvec; |
245 | ||
246 | fail: | |
247 | bfd_release (abfd, tdata); | |
248 | abfd->flags = oflags; | |
249 | bfd_get_start_address (abfd) = ostart; | |
250 | return (const bfd_target *) NULL; | |
251 | } | |
252 | ||
253 | /* Turn a COFF file into a BFD, but fail with bfd_error_wrong_format if it is | |
254 | not a COFF file. This is also used by ECOFF. */ | |
255 | ||
256 | const bfd_target * | |
257 | coff_object_p (abfd) | |
258 | bfd *abfd; | |
259 | { | |
260 | unsigned int filhsz; | |
261 | unsigned int aoutsz; | |
262 | int nscns; | |
263 | PTR filehdr; | |
264 | struct internal_filehdr internal_f; | |
265 | struct internal_aouthdr internal_a; | |
266 | ||
267 | /* figure out how much to read */ | |
268 | filhsz = bfd_coff_filhsz (abfd); | |
269 | aoutsz = bfd_coff_aoutsz (abfd); | |
270 | ||
271 | filehdr = bfd_alloc (abfd, filhsz); | |
272 | if (filehdr == NULL) | |
273 | return 0; | |
274 | if (bfd_read (filehdr, 1, filhsz, abfd) != filhsz) | |
275 | { | |
276 | if (bfd_get_error () != bfd_error_system_call) | |
277 | bfd_set_error (bfd_error_wrong_format); | |
278 | return 0; | |
279 | } | |
280 | bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f); | |
281 | bfd_release (abfd, filehdr); | |
282 | ||
283 | if (bfd_coff_bad_format_hook (abfd, &internal_f) == false) | |
284 | { | |
285 | bfd_set_error (bfd_error_wrong_format); | |
286 | return 0; | |
287 | } | |
288 | nscns = internal_f.f_nscns; | |
289 | ||
290 | if (internal_f.f_opthdr) | |
291 | { | |
292 | PTR opthdr; | |
293 | ||
294 | opthdr = bfd_alloc (abfd, aoutsz); | |
295 | if (opthdr == NULL) | |
296 | return 0;; | |
297 | if (bfd_read (opthdr, 1, internal_f.f_opthdr, abfd) | |
298 | != internal_f.f_opthdr) | |
299 | { | |
300 | return 0; | |
301 | } | |
302 | bfd_coff_swap_aouthdr_in (abfd, opthdr, (PTR) &internal_a); | |
303 | } | |
304 | ||
305 | return coff_real_object_p (abfd, nscns, &internal_f, | |
306 | (internal_f.f_opthdr != 0 | |
307 | ? &internal_a | |
308 | : (struct internal_aouthdr *) NULL)); | |
309 | } | |
310 | ||
311 | /* Get the BFD section from a COFF symbol section number. */ | |
312 | ||
313 | asection * | |
314 | coff_section_from_bfd_index (abfd, index) | |
315 | bfd *abfd; | |
316 | int index; | |
317 | { | |
318 | struct sec *answer = abfd->sections; | |
319 | ||
320 | if (index == N_ABS) | |
321 | return bfd_abs_section_ptr; | |
322 | if (index == N_UNDEF) | |
323 | return bfd_und_section_ptr; | |
324 | if (index == N_DEBUG) | |
325 | return bfd_abs_section_ptr; | |
326 | ||
327 | while (answer) | |
328 | { | |
329 | if (answer->target_index == index) | |
330 | return answer; | |
331 | answer = answer->next; | |
332 | } | |
333 | ||
334 | /* We should not reach this point, but the SCO 3.2v4 /lib/libc_s.a | |
335 | has a bad symbol table in biglitpow.o. */ | |
336 | return bfd_und_section_ptr; | |
337 | } | |
338 | ||
339 | /* Get the upper bound of a COFF symbol table. */ | |
340 | ||
341 | long | |
342 | coff_get_symtab_upper_bound (abfd) | |
343 | bfd *abfd; | |
344 | { | |
345 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
346 | return -1; | |
347 | ||
348 | return (bfd_get_symcount (abfd) + 1) * (sizeof (coff_symbol_type *)); | |
349 | } | |
350 | ||
252b5132 RH |
351 | /* Canonicalize a COFF symbol table. */ |
352 | ||
353 | long | |
354 | coff_get_symtab (abfd, alocation) | |
355 | bfd *abfd; | |
356 | asymbol **alocation; | |
357 | { | |
358 | unsigned int counter; | |
359 | coff_symbol_type *symbase; | |
360 | coff_symbol_type **location = (coff_symbol_type **) alocation; | |
361 | ||
362 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
363 | return -1; | |
364 | ||
365 | symbase = obj_symbols (abfd); | |
366 | counter = bfd_get_symcount (abfd); | |
367 | while (counter-- > 0) | |
368 | *location++ = symbase++; | |
369 | ||
370 | *location = NULL; | |
371 | ||
372 | return bfd_get_symcount (abfd); | |
373 | } | |
374 | ||
375 | /* Get the name of a symbol. The caller must pass in a buffer of size | |
376 | >= SYMNMLEN + 1. */ | |
377 | ||
378 | const char * | |
379 | _bfd_coff_internal_syment_name (abfd, sym, buf) | |
380 | bfd *abfd; | |
381 | const struct internal_syment *sym; | |
382 | char *buf; | |
383 | { | |
384 | /* FIXME: It's not clear this will work correctly if sizeof | |
385 | (_n_zeroes) != 4. */ | |
386 | if (sym->_n._n_n._n_zeroes != 0 | |
387 | || sym->_n._n_n._n_offset == 0) | |
388 | { | |
389 | memcpy (buf, sym->_n._n_name, SYMNMLEN); | |
390 | buf[SYMNMLEN] = '\0'; | |
391 | return buf; | |
392 | } | |
393 | else | |
394 | { | |
395 | const char *strings; | |
396 | ||
397 | BFD_ASSERT (sym->_n._n_n._n_offset >= STRING_SIZE_SIZE); | |
398 | strings = obj_coff_strings (abfd); | |
399 | if (strings == NULL) | |
400 | { | |
401 | strings = _bfd_coff_read_string_table (abfd); | |
402 | if (strings == NULL) | |
403 | return NULL; | |
404 | } | |
405 | return strings + sym->_n._n_n._n_offset; | |
406 | } | |
407 | } | |
408 | ||
409 | /* Read in and swap the relocs. This returns a buffer holding the | |
410 | relocs for section SEC in file ABFD. If CACHE is true and | |
411 | INTERNAL_RELOCS is NULL, the relocs read in will be saved in case | |
412 | the function is called again. If EXTERNAL_RELOCS is not NULL, it | |
413 | is a buffer large enough to hold the unswapped relocs. If | |
414 | INTERNAL_RELOCS is not NULL, it is a buffer large enough to hold | |
415 | the swapped relocs. If REQUIRE_INTERNAL is true, then the return | |
416 | value must be INTERNAL_RELOCS. The function returns NULL on error. */ | |
417 | ||
418 | struct internal_reloc * | |
419 | _bfd_coff_read_internal_relocs (abfd, sec, cache, external_relocs, | |
420 | require_internal, internal_relocs) | |
421 | bfd *abfd; | |
422 | asection *sec; | |
423 | boolean cache; | |
424 | bfd_byte *external_relocs; | |
425 | boolean require_internal; | |
426 | struct internal_reloc *internal_relocs; | |
427 | { | |
428 | bfd_size_type relsz; | |
429 | bfd_byte *free_external = NULL; | |
430 | struct internal_reloc *free_internal = NULL; | |
431 | bfd_byte *erel; | |
432 | bfd_byte *erel_end; | |
433 | struct internal_reloc *irel; | |
434 | ||
435 | if (coff_section_data (abfd, sec) != NULL | |
436 | && coff_section_data (abfd, sec)->relocs != NULL) | |
437 | { | |
438 | if (! require_internal) | |
439 | return coff_section_data (abfd, sec)->relocs; | |
440 | memcpy (internal_relocs, coff_section_data (abfd, sec)->relocs, | |
441 | sec->reloc_count * sizeof (struct internal_reloc)); | |
442 | return internal_relocs; | |
443 | } | |
444 | ||
445 | relsz = bfd_coff_relsz (abfd); | |
446 | ||
447 | if (external_relocs == NULL) | |
448 | { | |
449 | free_external = (bfd_byte *) bfd_malloc (sec->reloc_count * relsz); | |
450 | if (free_external == NULL && sec->reloc_count > 0) | |
451 | goto error_return; | |
452 | external_relocs = free_external; | |
453 | } | |
454 | ||
455 | if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 | |
456 | || (bfd_read (external_relocs, relsz, sec->reloc_count, abfd) | |
457 | != relsz * sec->reloc_count)) | |
458 | goto error_return; | |
459 | ||
460 | if (internal_relocs == NULL) | |
461 | { | |
462 | free_internal = ((struct internal_reloc *) | |
463 | bfd_malloc (sec->reloc_count | |
464 | * sizeof (struct internal_reloc))); | |
465 | if (free_internal == NULL && sec->reloc_count > 0) | |
466 | goto error_return; | |
467 | internal_relocs = free_internal; | |
468 | } | |
469 | ||
470 | /* Swap in the relocs. */ | |
471 | erel = external_relocs; | |
472 | erel_end = erel + relsz * sec->reloc_count; | |
473 | irel = internal_relocs; | |
474 | for (; erel < erel_end; erel += relsz, irel++) | |
475 | bfd_coff_swap_reloc_in (abfd, (PTR) erel, (PTR) irel); | |
476 | ||
477 | if (free_external != NULL) | |
478 | { | |
479 | free (free_external); | |
480 | free_external = NULL; | |
481 | } | |
482 | ||
483 | if (cache && free_internal != NULL) | |
484 | { | |
485 | if (coff_section_data (abfd, sec) == NULL) | |
486 | { | |
487 | sec->used_by_bfd = | |
488 | (PTR) bfd_zalloc (abfd, | |
489 | sizeof (struct coff_section_tdata)); | |
490 | if (sec->used_by_bfd == NULL) | |
491 | goto error_return; | |
492 | coff_section_data (abfd, sec)->contents = NULL; | |
493 | } | |
494 | coff_section_data (abfd, sec)->relocs = free_internal; | |
495 | } | |
496 | ||
497 | return internal_relocs; | |
498 | ||
499 | error_return: | |
500 | if (free_external != NULL) | |
501 | free (free_external); | |
502 | if (free_internal != NULL) | |
503 | free (free_internal); | |
504 | return NULL; | |
505 | } | |
506 | ||
507 | /* Set lineno_count for the output sections of a COFF file. */ | |
508 | ||
509 | int | |
510 | coff_count_linenumbers (abfd) | |
511 | bfd *abfd; | |
512 | { | |
513 | unsigned int limit = bfd_get_symcount (abfd); | |
514 | unsigned int i; | |
515 | int total = 0; | |
516 | asymbol **p; | |
517 | asection *s; | |
518 | ||
519 | if (limit == 0) | |
520 | { | |
521 | /* This may be from the backend linker, in which case the | |
522 | lineno_count in the sections is correct. */ | |
523 | for (s = abfd->sections; s != NULL; s = s->next) | |
524 | total += s->lineno_count; | |
525 | return total; | |
526 | } | |
527 | ||
528 | for (s = abfd->sections; s != NULL; s = s->next) | |
529 | BFD_ASSERT (s->lineno_count == 0); | |
530 | ||
531 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
532 | { | |
533 | asymbol *q_maybe = *p; | |
534 | ||
9bd09e22 | 535 | if (bfd_family_coff (bfd_asymbol_bfd (q_maybe))) |
252b5132 RH |
536 | { |
537 | coff_symbol_type *q = coffsymbol (q_maybe); | |
538 | ||
539 | /* The AIX 4.1 compiler can sometimes generate line numbers | |
540 | attached to debugging symbols. We try to simply ignore | |
541 | those here. */ | |
542 | if (q->lineno != NULL | |
543 | && q->symbol.section->owner != NULL) | |
544 | { | |
545 | /* This symbol has line numbers. Increment the owning | |
546 | section's linenumber count. */ | |
547 | alent *l = q->lineno; | |
548 | ||
549 | ++q->symbol.section->output_section->lineno_count; | |
550 | ++total; | |
551 | ++l; | |
552 | while (l->line_number != 0) | |
553 | { | |
554 | ++total; | |
555 | ++q->symbol.section->output_section->lineno_count; | |
556 | ++l; | |
557 | } | |
558 | } | |
559 | } | |
560 | } | |
561 | ||
562 | return total; | |
563 | } | |
564 | ||
565 | /* Takes a bfd and a symbol, returns a pointer to the coff specific | |
566 | area of the symbol if there is one. */ | |
567 | ||
252b5132 RH |
568 | coff_symbol_type * |
569 | coff_symbol_from (ignore_abfd, symbol) | |
7442e600 | 570 | bfd *ignore_abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
571 | asymbol *symbol; |
572 | { | |
9bd09e22 | 573 | if (!bfd_family_coff (bfd_asymbol_bfd (symbol))) |
252b5132 RH |
574 | return (coff_symbol_type *) NULL; |
575 | ||
576 | if (bfd_asymbol_bfd (symbol)->tdata.coff_obj_data == (coff_data_type *) NULL) | |
577 | return (coff_symbol_type *) NULL; | |
578 | ||
579 | return (coff_symbol_type *) symbol; | |
580 | } | |
581 | ||
582 | static void | |
583 | fixup_symbol_value (abfd, coff_symbol_ptr, syment) | |
584 | bfd *abfd; | |
585 | coff_symbol_type *coff_symbol_ptr; | |
586 | struct internal_syment *syment; | |
587 | { | |
588 | ||
589 | /* Normalize the symbol flags */ | |
590 | if (bfd_is_com_section (coff_symbol_ptr->symbol.section)) | |
591 | { | |
592 | /* a common symbol is undefined with a value */ | |
593 | syment->n_scnum = N_UNDEF; | |
594 | syment->n_value = coff_symbol_ptr->symbol.value; | |
595 | } | |
703153b5 ILT |
596 | else if ((coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) != 0 |
597 | && (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING_RELOC) == 0) | |
252b5132 RH |
598 | { |
599 | syment->n_value = coff_symbol_ptr->symbol.value; | |
600 | } | |
601 | else if (bfd_is_und_section (coff_symbol_ptr->symbol.section)) | |
602 | { | |
603 | syment->n_scnum = N_UNDEF; | |
604 | syment->n_value = 0; | |
605 | } | |
7bb9db4d | 606 | /* FIXME: Do we need to handle the absolute section here? */ |
252b5132 RH |
607 | else |
608 | { | |
609 | if (coff_symbol_ptr->symbol.section) | |
610 | { | |
611 | syment->n_scnum = | |
612 | coff_symbol_ptr->symbol.section->output_section->target_index; | |
613 | ||
614 | syment->n_value = (coff_symbol_ptr->symbol.value | |
615 | + coff_symbol_ptr->symbol.section->output_offset); | |
616 | if (! obj_pe (abfd)) | |
34cbe64e TW |
617 | { |
618 | syment->n_value += (syment->n_sclass == C_STATLAB) | |
619 | ? coff_symbol_ptr->symbol.section->output_section->lma | |
620 | : coff_symbol_ptr->symbol.section->output_section->vma; | |
621 | } | |
252b5132 RH |
622 | } |
623 | else | |
624 | { | |
625 | BFD_ASSERT (0); | |
626 | /* This can happen, but I don't know why yet (steve@cygnus.com) */ | |
627 | syment->n_scnum = N_ABS; | |
628 | syment->n_value = coff_symbol_ptr->symbol.value; | |
629 | } | |
630 | } | |
631 | } | |
632 | ||
633 | /* Run through all the symbols in the symbol table and work out what | |
634 | their indexes into the symbol table will be when output. | |
635 | ||
636 | Coff requires that each C_FILE symbol points to the next one in the | |
637 | chain, and that the last one points to the first external symbol. We | |
638 | do that here too. */ | |
639 | ||
640 | boolean | |
641 | coff_renumber_symbols (bfd_ptr, first_undef) | |
642 | bfd *bfd_ptr; | |
643 | int *first_undef; | |
644 | { | |
645 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
646 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
647 | unsigned int native_index = 0; | |
648 | struct internal_syment *last_file = (struct internal_syment *) NULL; | |
649 | unsigned int symbol_index; | |
650 | ||
651 | /* COFF demands that undefined symbols come after all other symbols. | |
652 | Since we don't need to impose this extra knowledge on all our | |
653 | client programs, deal with that here. Sort the symbol table; | |
654 | just move the undefined symbols to the end, leaving the rest | |
655 | alone. The O'Reilly book says that defined global symbols come | |
656 | at the end before the undefined symbols, so we do that here as | |
657 | well. */ | |
658 | /* @@ Do we have some condition we could test for, so we don't always | |
659 | have to do this? I don't think relocatability is quite right, but | |
660 | I'm not certain. [raeburn:19920508.1711EST] */ | |
661 | { | |
662 | asymbol **newsyms; | |
663 | unsigned int i; | |
664 | ||
665 | newsyms = (asymbol **) bfd_alloc (bfd_ptr, | |
666 | sizeof (asymbol *) * (symbol_count + 1)); | |
667 | if (!newsyms) | |
668 | return false; | |
669 | bfd_ptr->outsymbols = newsyms; | |
670 | for (i = 0; i < symbol_count; i++) | |
671 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) != 0 | |
672 | || (!bfd_is_und_section (symbol_ptr_ptr[i]->section) | |
673 | && !bfd_is_com_section (symbol_ptr_ptr[i]->section) | |
674 | && ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) != 0 | |
675 | || ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) | |
676 | == 0)))) | |
677 | *newsyms++ = symbol_ptr_ptr[i]; | |
678 | ||
679 | for (i = 0; i < symbol_count; i++) | |
680 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 | |
681 | && !bfd_is_und_section (symbol_ptr_ptr[i]->section) | |
682 | && (bfd_is_com_section (symbol_ptr_ptr[i]->section) | |
683 | || ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) == 0 | |
684 | && ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) | |
685 | != 0)))) | |
686 | *newsyms++ = symbol_ptr_ptr[i]; | |
687 | ||
688 | *first_undef = newsyms - bfd_ptr->outsymbols; | |
689 | ||
690 | for (i = 0; i < symbol_count; i++) | |
691 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 | |
692 | && bfd_is_und_section (symbol_ptr_ptr[i]->section)) | |
693 | *newsyms++ = symbol_ptr_ptr[i]; | |
694 | *newsyms = (asymbol *) NULL; | |
695 | symbol_ptr_ptr = bfd_ptr->outsymbols; | |
696 | } | |
697 | ||
698 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
699 | { | |
700 | coff_symbol_type *coff_symbol_ptr = coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]); | |
244148ad | 701 | symbol_ptr_ptr[symbol_index]->udata.i = symbol_index; |
252b5132 RH |
702 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
703 | { | |
704 | combined_entry_type *s = coff_symbol_ptr->native; | |
705 | int i; | |
706 | ||
707 | if (s->u.syment.n_sclass == C_FILE) | |
708 | { | |
709 | if (last_file != (struct internal_syment *) NULL) | |
710 | last_file->n_value = native_index; | |
711 | last_file = &(s->u.syment); | |
712 | } | |
713 | else | |
714 | { | |
715 | ||
716 | /* Modify the symbol values according to their section and | |
717 | type */ | |
718 | ||
719 | fixup_symbol_value (bfd_ptr, coff_symbol_ptr, &(s->u.syment)); | |
720 | } | |
721 | for (i = 0; i < s->u.syment.n_numaux + 1; i++) | |
722 | s[i].offset = native_index++; | |
723 | } | |
724 | else | |
725 | { | |
726 | native_index++; | |
727 | } | |
728 | } | |
729 | obj_conv_table_size (bfd_ptr) = native_index; | |
730 | ||
731 | return true; | |
732 | } | |
733 | ||
734 | /* Run thorough the symbol table again, and fix it so that all | |
735 | pointers to entries are changed to the entries' index in the output | |
736 | symbol table. */ | |
737 | ||
738 | void | |
739 | coff_mangle_symbols (bfd_ptr) | |
740 | bfd *bfd_ptr; | |
741 | { | |
742 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
743 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
744 | unsigned int symbol_index; | |
745 | ||
746 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
747 | { | |
748 | coff_symbol_type *coff_symbol_ptr = | |
749 | coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]); | |
750 | ||
751 | if (coff_symbol_ptr && coff_symbol_ptr->native) | |
752 | { | |
753 | int i; | |
754 | combined_entry_type *s = coff_symbol_ptr->native; | |
755 | ||
756 | if (s->fix_value) | |
757 | { | |
758 | /* FIXME: We should use a union here. */ | |
beb1bf64 TR |
759 | s->u.syment.n_value = |
760 | (bfd_vma)((combined_entry_type *) | |
761 | ((unsigned long) s->u.syment.n_value))->offset; | |
252b5132 RH |
762 | s->fix_value = 0; |
763 | } | |
764 | if (s->fix_line) | |
765 | { | |
766 | /* The value is the offset into the line number entries | |
767 | for the symbol's section. On output, the symbol's | |
768 | section should be N_DEBUG. */ | |
769 | s->u.syment.n_value = | |
770 | (coff_symbol_ptr->symbol.section->output_section->line_filepos | |
771 | + s->u.syment.n_value * bfd_coff_linesz (bfd_ptr)); | |
772 | coff_symbol_ptr->symbol.section = | |
773 | coff_section_from_bfd_index (bfd_ptr, N_DEBUG); | |
774 | BFD_ASSERT (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING); | |
775 | } | |
776 | for (i = 0; i < s->u.syment.n_numaux; i++) | |
777 | { | |
778 | combined_entry_type *a = s + i + 1; | |
779 | if (a->fix_tag) | |
780 | { | |
781 | a->u.auxent.x_sym.x_tagndx.l = | |
782 | a->u.auxent.x_sym.x_tagndx.p->offset; | |
783 | a->fix_tag = 0; | |
784 | } | |
785 | if (a->fix_end) | |
786 | { | |
787 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
788 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset; | |
789 | a->fix_end = 0; | |
790 | } | |
791 | if (a->fix_scnlen) | |
792 | { | |
793 | a->u.auxent.x_csect.x_scnlen.l = | |
794 | a->u.auxent.x_csect.x_scnlen.p->offset; | |
795 | a->fix_scnlen = 0; | |
796 | } | |
797 | } | |
798 | } | |
799 | } | |
800 | } | |
801 | ||
802 | static void | |
803 | coff_fix_symbol_name (abfd, symbol, native, string_size_p, | |
804 | debug_string_section_p, debug_string_size_p) | |
805 | bfd *abfd; | |
806 | asymbol *symbol; | |
807 | combined_entry_type *native; | |
808 | bfd_size_type *string_size_p; | |
809 | asection **debug_string_section_p; | |
810 | bfd_size_type *debug_string_size_p; | |
811 | { | |
812 | unsigned int name_length; | |
813 | union internal_auxent *auxent; | |
814 | char *name = (char *) (symbol->name); | |
815 | ||
816 | if (name == (char *) NULL) | |
817 | { | |
818 | /* coff symbols always have names, so we'll make one up */ | |
819 | symbol->name = "strange"; | |
820 | name = (char *) symbol->name; | |
821 | } | |
822 | name_length = strlen (name); | |
823 | ||
824 | if (native->u.syment.n_sclass == C_FILE | |
825 | && native->u.syment.n_numaux > 0) | |
826 | { | |
692b7d62 ILT |
827 | unsigned int filnmlen; |
828 | ||
7f6d05e8 CP |
829 | if (bfd_coff_force_symnames_in_strings (abfd)) |
830 | { | |
244148ad | 831 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 CP |
832 | (*string_size_p + STRING_SIZE_SIZE); |
833 | native->u.syment._n._n_n._n_zeroes = 0; | |
834 | *string_size_p += 6; /* strlen(".file") + 1 */ | |
835 | } | |
836 | else | |
837 | strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN); | |
838 | ||
252b5132 RH |
839 | auxent = &(native + 1)->u.auxent; |
840 | ||
692b7d62 ILT |
841 | filnmlen = bfd_coff_filnmlen (abfd); |
842 | ||
252b5132 RH |
843 | if (bfd_coff_long_filenames (abfd)) |
844 | { | |
692b7d62 | 845 | if (name_length <= filnmlen) |
252b5132 | 846 | { |
692b7d62 | 847 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
252b5132 RH |
848 | } |
849 | else | |
850 | { | |
851 | auxent->x_file.x_n.x_offset = *string_size_p + STRING_SIZE_SIZE; | |
852 | auxent->x_file.x_n.x_zeroes = 0; | |
853 | *string_size_p += name_length + 1; | |
854 | } | |
855 | } | |
856 | else | |
857 | { | |
692b7d62 ILT |
858 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
859 | if (name_length > filnmlen) | |
860 | name[filnmlen] = '\0'; | |
252b5132 RH |
861 | } |
862 | } | |
863 | else | |
864 | { | |
7f6d05e8 | 865 | if (name_length <= SYMNMLEN && !bfd_coff_force_symnames_in_strings (abfd)) |
252b5132 RH |
866 | { |
867 | /* This name will fit into the symbol neatly */ | |
868 | strncpy (native->u.syment._n._n_name, symbol->name, SYMNMLEN); | |
869 | } | |
870 | else if (!bfd_coff_symname_in_debug (abfd, &native->u.syment)) | |
871 | { | |
872 | native->u.syment._n._n_n._n_offset = (*string_size_p | |
873 | + STRING_SIZE_SIZE); | |
874 | native->u.syment._n._n_n._n_zeroes = 0; | |
875 | *string_size_p += name_length + 1; | |
876 | } | |
877 | else | |
878 | { | |
879 | long filepos; | |
7f6d05e8 CP |
880 | bfd_byte buf[4]; |
881 | int prefix_len = bfd_coff_debug_string_prefix_length (abfd); | |
252b5132 RH |
882 | |
883 | /* This name should be written into the .debug section. For | |
884 | some reason each name is preceded by a two byte length | |
885 | and also followed by a null byte. FIXME: We assume that | |
886 | the .debug section has already been created, and that it | |
887 | is large enough. */ | |
888 | if (*debug_string_section_p == (asection *) NULL) | |
889 | *debug_string_section_p = bfd_get_section_by_name (abfd, ".debug"); | |
890 | filepos = bfd_tell (abfd); | |
7f6d05e8 CP |
891 | if (prefix_len == 4) |
892 | bfd_put_32 (abfd, name_length + 1, buf); | |
893 | else | |
894 | bfd_put_16 (abfd, name_length + 1, buf); | |
895 | ||
252b5132 RH |
896 | if (!bfd_set_section_contents (abfd, |
897 | *debug_string_section_p, | |
898 | (PTR) buf, | |
899 | (file_ptr) *debug_string_size_p, | |
7f6d05e8 | 900 | (bfd_size_type) prefix_len) |
252b5132 RH |
901 | || !bfd_set_section_contents (abfd, |
902 | *debug_string_section_p, | |
903 | (PTR) symbol->name, | |
904 | ((file_ptr) *debug_string_size_p | |
7f6d05e8 | 905 | + prefix_len), |
252b5132 RH |
906 | (bfd_size_type) name_length + 1)) |
907 | abort (); | |
908 | if (bfd_seek (abfd, filepos, SEEK_SET) != 0) | |
909 | abort (); | |
244148ad | 910 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 | 911 | *debug_string_size_p + prefix_len; |
252b5132 | 912 | native->u.syment._n._n_n._n_zeroes = 0; |
7f6d05e8 | 913 | *debug_string_size_p += name_length + 1 + prefix_len; |
252b5132 RH |
914 | } |
915 | } | |
916 | } | |
917 | ||
918 | /* We need to keep track of the symbol index so that when we write out | |
919 | the relocs we can get the index for a symbol. This method is a | |
920 | hack. FIXME. */ | |
921 | ||
922 | #define set_index(symbol, idx) ((symbol)->udata.i = (idx)) | |
923 | ||
924 | /* Write a symbol out to a COFF file. */ | |
925 | ||
926 | static boolean | |
927 | coff_write_symbol (abfd, symbol, native, written, string_size_p, | |
928 | debug_string_section_p, debug_string_size_p) | |
929 | bfd *abfd; | |
930 | asymbol *symbol; | |
931 | combined_entry_type *native; | |
beb1bf64 | 932 | bfd_vma *written; |
252b5132 RH |
933 | bfd_size_type *string_size_p; |
934 | asection **debug_string_section_p; | |
935 | bfd_size_type *debug_string_size_p; | |
936 | { | |
937 | unsigned int numaux = native->u.syment.n_numaux; | |
938 | int type = native->u.syment.n_type; | |
939 | int class = native->u.syment.n_sclass; | |
940 | PTR buf; | |
941 | bfd_size_type symesz; | |
942 | ||
943 | if (native->u.syment.n_sclass == C_FILE) | |
944 | symbol->flags |= BSF_DEBUGGING; | |
945 | ||
946 | if (symbol->flags & BSF_DEBUGGING | |
947 | && bfd_is_abs_section (symbol->section)) | |
948 | { | |
949 | native->u.syment.n_scnum = N_DEBUG; | |
950 | } | |
951 | else if (bfd_is_abs_section (symbol->section)) | |
952 | { | |
953 | native->u.syment.n_scnum = N_ABS; | |
954 | } | |
955 | else if (bfd_is_und_section (symbol->section)) | |
956 | { | |
957 | native->u.syment.n_scnum = N_UNDEF; | |
958 | } | |
959 | else | |
960 | { | |
961 | native->u.syment.n_scnum = | |
962 | symbol->section->output_section->target_index; | |
963 | } | |
964 | ||
965 | coff_fix_symbol_name (abfd, symbol, native, string_size_p, | |
966 | debug_string_section_p, debug_string_size_p); | |
967 | ||
968 | symesz = bfd_coff_symesz (abfd); | |
969 | buf = bfd_alloc (abfd, symesz); | |
970 | if (!buf) | |
971 | return false; | |
972 | bfd_coff_swap_sym_out (abfd, &native->u.syment, buf); | |
973 | if (bfd_write (buf, 1, symesz, abfd) != symesz) | |
974 | return false; | |
975 | bfd_release (abfd, buf); | |
976 | ||
977 | if (native->u.syment.n_numaux > 0) | |
978 | { | |
979 | bfd_size_type auxesz; | |
980 | unsigned int j; | |
981 | ||
982 | auxesz = bfd_coff_auxesz (abfd); | |
983 | buf = bfd_alloc (abfd, auxesz); | |
984 | if (!buf) | |
985 | return false; | |
986 | for (j = 0; j < native->u.syment.n_numaux; j++) | |
987 | { | |
988 | bfd_coff_swap_aux_out (abfd, | |
989 | &((native + j + 1)->u.auxent), | |
990 | type, | |
991 | class, | |
992 | j, | |
993 | native->u.syment.n_numaux, | |
994 | buf); | |
995 | if (bfd_write (buf, 1, auxesz, abfd) != auxesz) | |
996 | return false; | |
997 | } | |
998 | bfd_release (abfd, buf); | |
999 | } | |
1000 | ||
1001 | /* Store the index for use when we write out the relocs. */ | |
1002 | set_index (symbol, *written); | |
1003 | ||
1004 | *written += numaux + 1; | |
1005 | return true; | |
1006 | } | |
1007 | ||
1008 | /* Write out a symbol to a COFF file that does not come from a COFF | |
1009 | file originally. This symbol may have been created by the linker, | |
1010 | or we may be linking a non COFF file to a COFF file. */ | |
1011 | ||
1012 | static boolean | |
1013 | coff_write_alien_symbol (abfd, symbol, written, string_size_p, | |
1014 | debug_string_section_p, debug_string_size_p) | |
1015 | bfd *abfd; | |
1016 | asymbol *symbol; | |
beb1bf64 | 1017 | bfd_vma *written; |
252b5132 RH |
1018 | bfd_size_type *string_size_p; |
1019 | asection **debug_string_section_p; | |
1020 | bfd_size_type *debug_string_size_p; | |
1021 | { | |
1022 | combined_entry_type *native; | |
1023 | combined_entry_type dummy; | |
1024 | ||
1025 | native = &dummy; | |
1026 | native->u.syment.n_type = T_NULL; | |
1027 | native->u.syment.n_flags = 0; | |
1028 | if (bfd_is_und_section (symbol->section)) | |
1029 | { | |
1030 | native->u.syment.n_scnum = N_UNDEF; | |
1031 | native->u.syment.n_value = symbol->value; | |
1032 | } | |
1033 | else if (bfd_is_com_section (symbol->section)) | |
1034 | { | |
1035 | native->u.syment.n_scnum = N_UNDEF; | |
1036 | native->u.syment.n_value = symbol->value; | |
1037 | } | |
1038 | else if (symbol->flags & BSF_DEBUGGING) | |
1039 | { | |
1040 | /* There isn't much point to writing out a debugging symbol | |
1041 | unless we are prepared to convert it into COFF debugging | |
1042 | format. So, we just ignore them. We must clobber the symbol | |
1043 | name to keep it from being put in the string table. */ | |
1044 | symbol->name = ""; | |
1045 | return true; | |
1046 | } | |
1047 | else | |
1048 | { | |
1049 | native->u.syment.n_scnum = | |
1050 | symbol->section->output_section->target_index; | |
1051 | native->u.syment.n_value = (symbol->value | |
1052 | + symbol->section->output_offset); | |
1053 | if (! obj_pe (abfd)) | |
1054 | native->u.syment.n_value += symbol->section->output_section->vma; | |
1055 | ||
1056 | /* Copy the any flags from the the file header into the symbol. | |
1057 | FIXME: Why? */ | |
1058 | { | |
1059 | coff_symbol_type *c = coff_symbol_from (abfd, symbol); | |
1060 | if (c != (coff_symbol_type *) NULL) | |
1061 | native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags; | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | native->u.syment.n_type = 0; | |
1066 | if (symbol->flags & BSF_LOCAL) | |
1067 | native->u.syment.n_sclass = C_STAT; | |
1068 | else if (symbol->flags & BSF_WEAK) | |
1069 | native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
1070 | else | |
1071 | native->u.syment.n_sclass = C_EXT; | |
1072 | native->u.syment.n_numaux = 0; | |
1073 | ||
1074 | return coff_write_symbol (abfd, symbol, native, written, string_size_p, | |
1075 | debug_string_section_p, debug_string_size_p); | |
1076 | } | |
1077 | ||
1078 | /* Write a native symbol to a COFF file. */ | |
1079 | ||
1080 | static boolean | |
1081 | coff_write_native_symbol (abfd, symbol, written, string_size_p, | |
1082 | debug_string_section_p, debug_string_size_p) | |
1083 | bfd *abfd; | |
1084 | coff_symbol_type *symbol; | |
beb1bf64 | 1085 | bfd_vma *written; |
252b5132 RH |
1086 | bfd_size_type *string_size_p; |
1087 | asection **debug_string_section_p; | |
1088 | bfd_size_type *debug_string_size_p; | |
1089 | { | |
1090 | combined_entry_type *native = symbol->native; | |
1091 | alent *lineno = symbol->lineno; | |
1092 | ||
1093 | /* If this symbol has an associated line number, we must store the | |
1094 | symbol index in the line number field. We also tag the auxent to | |
1095 | point to the right place in the lineno table. */ | |
1096 | if (lineno && !symbol->done_lineno && symbol->symbol.section->owner != NULL) | |
1097 | { | |
1098 | unsigned int count = 0; | |
1099 | lineno[count].u.offset = *written; | |
1100 | if (native->u.syment.n_numaux) | |
1101 | { | |
1102 | union internal_auxent *a = &((native + 1)->u.auxent); | |
1103 | ||
1104 | a->x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
1105 | symbol->symbol.section->output_section->moving_line_filepos; | |
1106 | } | |
1107 | ||
1108 | /* Count and relocate all other linenumbers. */ | |
1109 | count++; | |
1110 | while (lineno[count].line_number != 0) | |
1111 | { | |
1112 | #if 0 | |
244148ad | 1113 | /* 13 april 92. sac |
252b5132 RH |
1114 | I've been told this, but still need proof: |
1115 | > The second bug is also in `bfd/coffcode.h'. This bug | |
1116 | > causes the linker to screw up the pc-relocations for | |
1117 | > all the line numbers in COFF code. This bug isn't only | |
1118 | > specific to A29K implementations, but affects all | |
1119 | > systems using COFF format binaries. Note that in COFF | |
1120 | > object files, the line number core offsets output by | |
1121 | > the assembler are relative to the start of each | |
1122 | > procedure, not to the start of the .text section. This | |
1123 | > patch relocates the line numbers relative to the | |
1124 | > `native->u.syment.n_value' instead of the section | |
1125 | > virtual address. | |
1126 | > modular!olson@cs.arizona.edu (Jon Olson) | |
1127 | */ | |
1128 | lineno[count].u.offset += native->u.syment.n_value; | |
1129 | #else | |
1130 | lineno[count].u.offset += | |
1131 | (symbol->symbol.section->output_section->vma | |
1132 | + symbol->symbol.section->output_offset); | |
1133 | #endif | |
1134 | count++; | |
1135 | } | |
1136 | symbol->done_lineno = true; | |
1137 | ||
1138 | symbol->symbol.section->output_section->moving_line_filepos += | |
1139 | count * bfd_coff_linesz (abfd); | |
1140 | } | |
1141 | ||
1142 | return coff_write_symbol (abfd, &(symbol->symbol), native, written, | |
1143 | string_size_p, debug_string_section_p, | |
1144 | debug_string_size_p); | |
1145 | } | |
1146 | ||
1147 | /* Write out the COFF symbols. */ | |
1148 | ||
1149 | boolean | |
1150 | coff_write_symbols (abfd) | |
1151 | bfd *abfd; | |
1152 | { | |
1153 | bfd_size_type string_size; | |
1154 | asection *debug_string_section; | |
1155 | bfd_size_type debug_string_size; | |
1156 | unsigned int i; | |
1157 | unsigned int limit = bfd_get_symcount (abfd); | |
beb1bf64 | 1158 | bfd_signed_vma written = 0; |
252b5132 RH |
1159 | asymbol **p; |
1160 | ||
1161 | string_size = 0; | |
1162 | debug_string_section = NULL; | |
1163 | debug_string_size = 0; | |
1164 | ||
1165 | /* If this target supports long section names, they must be put into | |
1166 | the string table. This is supported by PE. This code must | |
1167 | handle section names just as they are handled in | |
1168 | coff_write_object_contents. */ | |
1169 | if (bfd_coff_long_section_names (abfd)) | |
1170 | { | |
1171 | asection *o; | |
1172 | ||
1173 | for (o = abfd->sections; o != NULL; o = o->next) | |
1174 | { | |
1175 | size_t len; | |
1176 | ||
1177 | len = strlen (o->name); | |
1178 | if (len > SCNNMLEN) | |
1179 | string_size += len + 1; | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | /* Seek to the right place */ | |
1184 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) | |
1185 | return false; | |
1186 | ||
1187 | /* Output all the symbols we have */ | |
1188 | ||
1189 | written = 0; | |
1190 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
1191 | { | |
1192 | asymbol *symbol = *p; | |
1193 | coff_symbol_type *c_symbol = coff_symbol_from (abfd, symbol); | |
1194 | ||
1195 | if (c_symbol == (coff_symbol_type *) NULL | |
1196 | || c_symbol->native == (combined_entry_type *) NULL) | |
1197 | { | |
1198 | if (!coff_write_alien_symbol (abfd, symbol, &written, &string_size, | |
1199 | &debug_string_section, | |
1200 | &debug_string_size)) | |
1201 | return false; | |
1202 | } | |
1203 | else | |
1204 | { | |
1205 | if (!coff_write_native_symbol (abfd, c_symbol, &written, | |
1206 | &string_size, &debug_string_section, | |
1207 | &debug_string_size)) | |
1208 | return false; | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | obj_raw_syment_count (abfd) = written; | |
1213 | ||
1214 | /* Now write out strings */ | |
1215 | ||
1216 | if (string_size != 0) | |
1217 | { | |
1218 | unsigned int size = string_size + STRING_SIZE_SIZE; | |
1219 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1220 | ||
1221 | #if STRING_SIZE_SIZE == 4 | |
1222 | bfd_h_put_32 (abfd, size, buffer); | |
1223 | #else | |
1224 | #error Change bfd_h_put_32 | |
1225 | #endif | |
1226 | if (bfd_write ((PTR) buffer, 1, sizeof (buffer), abfd) != sizeof (buffer)) | |
1227 | return false; | |
1228 | ||
1229 | /* Handle long section names. This code must handle section | |
1230 | names just as they are handled in coff_write_object_contents. */ | |
1231 | if (bfd_coff_long_section_names (abfd)) | |
1232 | { | |
1233 | asection *o; | |
1234 | ||
1235 | for (o = abfd->sections; o != NULL; o = o->next) | |
1236 | { | |
1237 | size_t len; | |
1238 | ||
1239 | len = strlen (o->name); | |
1240 | if (len > SCNNMLEN) | |
1241 | { | |
1242 | if (bfd_write (o->name, 1, len + 1, abfd) != len + 1) | |
1243 | return false; | |
1244 | } | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | for (p = abfd->outsymbols, i = 0; | |
1249 | i < limit; | |
1250 | i++, p++) | |
1251 | { | |
1252 | asymbol *q = *p; | |
1253 | size_t name_length = strlen (q->name); | |
1254 | coff_symbol_type *c_symbol = coff_symbol_from (abfd, q); | |
1255 | size_t maxlen; | |
1256 | ||
1257 | /* Figure out whether the symbol name should go in the string | |
1258 | table. Symbol names that are short enough are stored | |
1259 | directly in the syment structure. File names permit a | |
1260 | different, longer, length in the syment structure. On | |
1261 | XCOFF, some symbol names are stored in the .debug section | |
1262 | rather than in the string table. */ | |
1263 | ||
1264 | if (c_symbol == NULL | |
1265 | || c_symbol->native == NULL) | |
1266 | { | |
1267 | /* This is not a COFF symbol, so it certainly is not a | |
1268 | file name, nor does it go in the .debug section. */ | |
7f6d05e8 | 1269 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; |
252b5132 RH |
1270 | } |
1271 | else if (bfd_coff_symname_in_debug (abfd, | |
1272 | &c_symbol->native->u.syment)) | |
1273 | { | |
1274 | /* This symbol name is in the XCOFF .debug section. | |
1275 | Don't write it into the string table. */ | |
1276 | maxlen = name_length; | |
1277 | } | |
1278 | else if (c_symbol->native->u.syment.n_sclass == C_FILE | |
1279 | && c_symbol->native->u.syment.n_numaux > 0) | |
7f6d05e8 | 1280 | { |
244148ad | 1281 | if (bfd_coff_force_symnames_in_strings (abfd)) |
7f6d05e8 CP |
1282 | bfd_write (".file", 1, 6, abfd); |
1283 | maxlen = bfd_coff_filnmlen (abfd); | |
1284 | } | |
252b5132 | 1285 | else |
7f6d05e8 | 1286 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; |
252b5132 RH |
1287 | |
1288 | if (name_length > maxlen) | |
1289 | { | |
1290 | if (bfd_write ((PTR) (q->name), 1, name_length + 1, abfd) | |
1291 | != name_length + 1) | |
1292 | return false; | |
1293 | } | |
1294 | } | |
1295 | } | |
1296 | else | |
1297 | { | |
1298 | /* We would normally not write anything here, but we'll write | |
1299 | out 4 so that any stupid coff reader which tries to read the | |
1300 | string table even when there isn't one won't croak. */ | |
1301 | unsigned int size = STRING_SIZE_SIZE; | |
1302 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1303 | ||
1304 | #if STRING_SIZE_SIZE == 4 | |
1305 | bfd_h_put_32 (abfd, size, buffer); | |
1306 | #else | |
1307 | #error Change bfd_h_put_32 | |
1308 | #endif | |
1309 | if (bfd_write ((PTR) buffer, 1, STRING_SIZE_SIZE, abfd) | |
1310 | != STRING_SIZE_SIZE) | |
1311 | return false; | |
1312 | } | |
1313 | ||
1314 | /* Make sure the .debug section was created to be the correct size. | |
1315 | We should create it ourselves on the fly, but we don't because | |
1316 | BFD won't let us write to any section until we know how large all | |
1317 | the sections are. We could still do it by making another pass | |
1318 | over the symbols. FIXME. */ | |
1319 | BFD_ASSERT (debug_string_size == 0 | |
1320 | || (debug_string_section != (asection *) NULL | |
1321 | && (BFD_ALIGN (debug_string_size, | |
1322 | 1 << debug_string_section->alignment_power) | |
1323 | == bfd_section_size (abfd, debug_string_section)))); | |
1324 | ||
1325 | return true; | |
1326 | } | |
1327 | ||
1328 | boolean | |
1329 | coff_write_linenumbers (abfd) | |
1330 | bfd *abfd; | |
1331 | { | |
1332 | asection *s; | |
1333 | bfd_size_type linesz; | |
1334 | PTR buff; | |
1335 | ||
1336 | linesz = bfd_coff_linesz (abfd); | |
1337 | buff = bfd_alloc (abfd, linesz); | |
1338 | if (!buff) | |
1339 | return false; | |
1340 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) | |
1341 | { | |
1342 | if (s->lineno_count) | |
1343 | { | |
1344 | asymbol **q = abfd->outsymbols; | |
1345 | if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0) | |
1346 | return false; | |
1347 | /* Find all the linenumbers in this section */ | |
1348 | while (*q) | |
1349 | { | |
1350 | asymbol *p = *q; | |
1351 | if (p->section->output_section == s) | |
1352 | { | |
1353 | alent *l = | |
1354 | BFD_SEND (bfd_asymbol_bfd (p), _get_lineno, | |
1355 | (bfd_asymbol_bfd (p), p)); | |
1356 | if (l) | |
1357 | { | |
1358 | /* Found a linenumber entry, output */ | |
1359 | struct internal_lineno out; | |
1360 | memset ((PTR) & out, 0, sizeof (out)); | |
1361 | out.l_lnno = 0; | |
1362 | out.l_addr.l_symndx = l->u.offset; | |
1363 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
1364 | if (bfd_write (buff, 1, linesz, abfd) != linesz) | |
1365 | return false; | |
1366 | l++; | |
1367 | while (l->line_number) | |
1368 | { | |
1369 | out.l_lnno = l->line_number; | |
1370 | out.l_addr.l_symndx = l->u.offset; | |
1371 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
1372 | if (bfd_write (buff, 1, linesz, abfd) != linesz) | |
1373 | return false; | |
1374 | l++; | |
1375 | } | |
1376 | } | |
1377 | } | |
1378 | q++; | |
1379 | } | |
1380 | } | |
1381 | } | |
1382 | bfd_release (abfd, buff); | |
1383 | return true; | |
1384 | } | |
1385 | ||
252b5132 RH |
1386 | alent * |
1387 | coff_get_lineno (ignore_abfd, symbol) | |
7442e600 | 1388 | bfd *ignore_abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1389 | asymbol *symbol; |
1390 | { | |
1391 | return coffsymbol (symbol)->lineno; | |
1392 | } | |
1393 | ||
1394 | #if 0 | |
1395 | ||
1396 | /* This is only called from coff_add_missing_symbols, which has been | |
1397 | disabled. */ | |
1398 | ||
1399 | asymbol * | |
1400 | coff_section_symbol (abfd, name) | |
1401 | bfd *abfd; | |
1402 | char *name; | |
1403 | { | |
1404 | asection *sec = bfd_make_section_old_way (abfd, name); | |
1405 | asymbol *sym; | |
1406 | combined_entry_type *csym; | |
1407 | ||
1408 | sym = sec->symbol; | |
1409 | csym = coff_symbol_from (abfd, sym)->native; | |
1410 | /* Make sure back-end COFF stuff is there. */ | |
1411 | if (csym == 0) | |
1412 | { | |
1413 | struct foo | |
1414 | { | |
1415 | coff_symbol_type sym; | |
1416 | /* @@FIXME This shouldn't use a fixed size!! */ | |
1417 | combined_entry_type e[10]; | |
1418 | }; | |
1419 | struct foo *f; | |
1420 | f = (struct foo *) bfd_alloc (abfd, sizeof (*f)); | |
1421 | if (!f) | |
1422 | { | |
1423 | bfd_set_error (bfd_error_no_error); | |
1424 | return NULL; | |
1425 | } | |
1426 | memset ((char *) f, 0, sizeof (*f)); | |
1427 | coff_symbol_from (abfd, sym)->native = csym = f->e; | |
1428 | } | |
1429 | csym[0].u.syment.n_sclass = C_STAT; | |
1430 | csym[0].u.syment.n_numaux = 1; | |
1431 | /* SF_SET_STATICS (sym); @@ ??? */ | |
1432 | csym[1].u.auxent.x_scn.x_scnlen = sec->_raw_size; | |
1433 | csym[1].u.auxent.x_scn.x_nreloc = sec->reloc_count; | |
1434 | csym[1].u.auxent.x_scn.x_nlinno = sec->lineno_count; | |
1435 | ||
1436 | if (sec->output_section == NULL) | |
1437 | { | |
1438 | sec->output_section = sec; | |
1439 | sec->output_offset = 0; | |
1440 | } | |
1441 | ||
1442 | return sym; | |
1443 | } | |
1444 | ||
1445 | #endif /* 0 */ | |
1446 | ||
1447 | /* This function transforms the offsets into the symbol table into | |
1448 | pointers to syments. */ | |
1449 | ||
1450 | static void | |
1451 | coff_pointerize_aux (abfd, table_base, symbol, indaux, auxent) | |
1452 | bfd *abfd; | |
1453 | combined_entry_type *table_base; | |
1454 | combined_entry_type *symbol; | |
1455 | unsigned int indaux; | |
1456 | combined_entry_type *auxent; | |
1457 | { | |
1458 | unsigned int type = symbol->u.syment.n_type; | |
1459 | unsigned int class = symbol->u.syment.n_sclass; | |
1460 | ||
1461 | if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) | |
1462 | { | |
1463 | if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) | |
1464 | (abfd, table_base, symbol, indaux, auxent)) | |
1465 | return; | |
1466 | } | |
1467 | ||
1468 | /* Don't bother if this is a file or a section */ | |
1469 | if (class == C_STAT && type == T_NULL) | |
1470 | return; | |
1471 | if (class == C_FILE) | |
1472 | return; | |
1473 | ||
1474 | /* Otherwise patch up */ | |
1475 | #define N_TMASK coff_data (abfd)->local_n_tmask | |
1476 | #define N_BTSHFT coff_data (abfd)->local_n_btshft | |
1477 | if ((ISFCN (type) || ISTAG (class) || class == C_BLOCK || class == C_FCN) | |
1478 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0) | |
1479 | { | |
1480 | auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = | |
1481 | table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
1482 | auxent->fix_end = 1; | |
1483 | } | |
1484 | /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can | |
1485 | generate one, so we must be careful to ignore it. */ | |
1486 | if (auxent->u.auxent.x_sym.x_tagndx.l > 0) | |
1487 | { | |
1488 | auxent->u.auxent.x_sym.x_tagndx.p = | |
1489 | table_base + auxent->u.auxent.x_sym.x_tagndx.l; | |
1490 | auxent->fix_tag = 1; | |
1491 | } | |
1492 | } | |
1493 | ||
1494 | /* Allocate space for the ".debug" section, and read it. | |
1495 | We did not read the debug section until now, because | |
244148ad | 1496 | we didn't want to go to the trouble until someone needed it. */ |
252b5132 RH |
1497 | |
1498 | static char * | |
1499 | build_debug_section (abfd) | |
1500 | bfd *abfd; | |
1501 | { | |
1502 | char *debug_section; | |
1503 | long position; | |
1504 | ||
1505 | asection *sect = bfd_get_section_by_name (abfd, ".debug"); | |
1506 | ||
1507 | if (!sect) | |
1508 | { | |
1509 | bfd_set_error (bfd_error_no_debug_section); | |
1510 | return NULL; | |
1511 | } | |
1512 | ||
1513 | debug_section = (PTR) bfd_alloc (abfd, | |
1514 | bfd_get_section_size_before_reloc (sect)); | |
1515 | if (debug_section == NULL) | |
1516 | return NULL; | |
1517 | ||
244148ad | 1518 | /* Seek to the beginning of the `.debug' section and read it. |
252b5132 RH |
1519 | Save the current position first; it is needed by our caller. |
1520 | Then read debug section and reset the file pointer. */ | |
1521 | ||
1522 | position = bfd_tell (abfd); | |
1523 | if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0 | |
1524 | || (bfd_read (debug_section, | |
1525 | bfd_get_section_size_before_reloc (sect), 1, abfd) | |
1526 | != bfd_get_section_size_before_reloc (sect)) | |
1527 | || bfd_seek (abfd, position, SEEK_SET) != 0) | |
1528 | return NULL; | |
1529 | return debug_section; | |
1530 | } | |
1531 | ||
252b5132 RH |
1532 | /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be |
1533 | \0-terminated, but will not exceed 'maxlen' characters. The copy *will* | |
1534 | be \0-terminated. */ | |
1535 | static char * | |
1536 | copy_name (abfd, name, maxlen) | |
1537 | bfd *abfd; | |
1538 | char *name; | |
1539 | int maxlen; | |
1540 | { | |
1541 | int len; | |
1542 | char *newname; | |
1543 | ||
1544 | for (len = 0; len < maxlen; ++len) | |
1545 | { | |
1546 | if (name[len] == '\0') | |
1547 | { | |
1548 | break; | |
1549 | } | |
1550 | } | |
1551 | ||
1552 | if ((newname = (PTR) bfd_alloc (abfd, len + 1)) == NULL) | |
1553 | return (NULL); | |
1554 | strncpy (newname, name, len); | |
1555 | newname[len] = '\0'; | |
1556 | return newname; | |
1557 | } | |
1558 | ||
1559 | /* Read in the external symbols. */ | |
1560 | ||
1561 | boolean | |
1562 | _bfd_coff_get_external_symbols (abfd) | |
1563 | bfd *abfd; | |
1564 | { | |
1565 | bfd_size_type symesz; | |
1566 | size_t size; | |
1567 | PTR syms; | |
1568 | ||
1569 | if (obj_coff_external_syms (abfd) != NULL) | |
1570 | return true; | |
1571 | ||
1572 | symesz = bfd_coff_symesz (abfd); | |
1573 | ||
1574 | size = obj_raw_syment_count (abfd) * symesz; | |
1575 | ||
1576 | syms = (PTR) bfd_malloc (size); | |
1577 | if (syms == NULL && size != 0) | |
1578 | return false; | |
1579 | ||
1580 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
1581 | || bfd_read (syms, size, 1, abfd) != size) | |
1582 | { | |
1583 | if (syms != NULL) | |
1584 | free (syms); | |
1585 | return false; | |
1586 | } | |
1587 | ||
1588 | obj_coff_external_syms (abfd) = syms; | |
1589 | ||
1590 | return true; | |
1591 | } | |
1592 | ||
1593 | /* Read in the external strings. The strings are not loaded until | |
1594 | they are needed. This is because we have no simple way of | |
1595 | detecting a missing string table in an archive. */ | |
1596 | ||
1597 | const char * | |
1598 | _bfd_coff_read_string_table (abfd) | |
1599 | bfd *abfd; | |
1600 | { | |
1601 | char extstrsize[STRING_SIZE_SIZE]; | |
1602 | size_t strsize; | |
1603 | char *strings; | |
1604 | ||
1605 | if (obj_coff_strings (abfd) != NULL) | |
1606 | return obj_coff_strings (abfd); | |
1607 | ||
1608 | if (obj_sym_filepos (abfd) == 0) | |
1609 | { | |
1610 | bfd_set_error (bfd_error_no_symbols); | |
1611 | return NULL; | |
1612 | } | |
1613 | ||
1614 | if (bfd_seek (abfd, | |
1615 | (obj_sym_filepos (abfd) | |
1616 | + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd)), | |
1617 | SEEK_SET) != 0) | |
1618 | return NULL; | |
244148ad | 1619 | |
252b5132 RH |
1620 | if (bfd_read (extstrsize, sizeof extstrsize, 1, abfd) != sizeof extstrsize) |
1621 | { | |
1622 | if (bfd_get_error () != bfd_error_file_truncated) | |
1623 | return NULL; | |
1624 | ||
1625 | /* There is no string table. */ | |
1626 | strsize = STRING_SIZE_SIZE; | |
1627 | } | |
1628 | else | |
1629 | { | |
1630 | #if STRING_SIZE_SIZE == 4 | |
1631 | strsize = bfd_h_get_32 (abfd, (bfd_byte *) extstrsize); | |
1632 | #else | |
1633 | #error Change bfd_h_get_32 | |
1634 | #endif | |
1635 | } | |
1636 | ||
1637 | if (strsize < STRING_SIZE_SIZE) | |
1638 | { | |
1639 | (*_bfd_error_handler) | |
1640 | (_("%s: bad string table size %lu"), bfd_get_filename (abfd), | |
1641 | (unsigned long) strsize); | |
1642 | bfd_set_error (bfd_error_bad_value); | |
1643 | return NULL; | |
1644 | } | |
1645 | ||
1646 | strings = (char *) bfd_malloc (strsize); | |
1647 | if (strings == NULL) | |
1648 | return NULL; | |
1649 | ||
1650 | if (bfd_read (strings + STRING_SIZE_SIZE, | |
1651 | strsize - STRING_SIZE_SIZE, 1, abfd) | |
1652 | != strsize - STRING_SIZE_SIZE) | |
1653 | { | |
1654 | free (strings); | |
1655 | return NULL; | |
1656 | } | |
1657 | ||
1658 | obj_coff_strings (abfd) = strings; | |
1659 | ||
1660 | return strings; | |
1661 | } | |
1662 | ||
1663 | /* Free up the external symbols and strings read from a COFF file. */ | |
1664 | ||
1665 | boolean | |
1666 | _bfd_coff_free_symbols (abfd) | |
1667 | bfd *abfd; | |
1668 | { | |
1669 | if (obj_coff_external_syms (abfd) != NULL | |
1670 | && ! obj_coff_keep_syms (abfd)) | |
1671 | { | |
1672 | free (obj_coff_external_syms (abfd)); | |
1673 | obj_coff_external_syms (abfd) = NULL; | |
1674 | } | |
1675 | if (obj_coff_strings (abfd) != NULL | |
1676 | && ! obj_coff_keep_strings (abfd)) | |
1677 | { | |
1678 | free (obj_coff_strings (abfd)); | |
1679 | obj_coff_strings (abfd) = NULL; | |
1680 | } | |
1681 | return true; | |
1682 | } | |
1683 | ||
1684 | /* Read a symbol table into freshly bfd_allocated memory, swap it, and | |
1685 | knit the symbol names into a normalized form. By normalized here I | |
1686 | mean that all symbols have an n_offset pointer that points to a null- | |
1687 | terminated string. */ | |
1688 | ||
1689 | combined_entry_type * | |
1690 | coff_get_normalized_symtab (abfd) | |
1691 | bfd *abfd; | |
1692 | { | |
1693 | combined_entry_type *internal; | |
1694 | combined_entry_type *internal_ptr; | |
1695 | combined_entry_type *symbol_ptr; | |
1696 | combined_entry_type *internal_end; | |
1697 | bfd_size_type symesz; | |
1698 | char *raw_src; | |
1699 | char *raw_end; | |
1700 | const char *string_table = NULL; | |
1701 | char *debug_section = NULL; | |
1702 | unsigned long size; | |
1703 | ||
1704 | if (obj_raw_syments (abfd) != NULL) | |
1705 | return obj_raw_syments (abfd); | |
1706 | ||
1707 | size = obj_raw_syment_count (abfd) * sizeof (combined_entry_type); | |
1708 | internal = (combined_entry_type *) bfd_zalloc (abfd, size); | |
1709 | if (internal == NULL && size != 0) | |
1710 | return NULL; | |
1711 | internal_end = internal + obj_raw_syment_count (abfd); | |
1712 | ||
1713 | if (! _bfd_coff_get_external_symbols (abfd)) | |
1714 | return NULL; | |
1715 | ||
1716 | raw_src = (char *) obj_coff_external_syms (abfd); | |
1717 | ||
1718 | /* mark the end of the symbols */ | |
1719 | symesz = bfd_coff_symesz (abfd); | |
1720 | raw_end = (char *) raw_src + obj_raw_syment_count (abfd) * symesz; | |
1721 | ||
1722 | /* FIXME SOMEDAY. A string table size of zero is very weird, but | |
1723 | probably possible. If one shows up, it will probably kill us. */ | |
1724 | ||
1725 | /* Swap all the raw entries */ | |
1726 | for (internal_ptr = internal; | |
1727 | raw_src < raw_end; | |
1728 | raw_src += symesz, internal_ptr++) | |
1729 | { | |
1730 | ||
1731 | unsigned int i; | |
1732 | bfd_coff_swap_sym_in (abfd, (PTR) raw_src, | |
1733 | (PTR) & internal_ptr->u.syment); | |
1734 | symbol_ptr = internal_ptr; | |
1735 | ||
1736 | for (i = 0; | |
1737 | i < symbol_ptr->u.syment.n_numaux; | |
1738 | i++) | |
1739 | { | |
1740 | internal_ptr++; | |
1741 | raw_src += symesz; | |
1742 | bfd_coff_swap_aux_in (abfd, (PTR) raw_src, | |
1743 | symbol_ptr->u.syment.n_type, | |
1744 | symbol_ptr->u.syment.n_sclass, | |
1745 | i, symbol_ptr->u.syment.n_numaux, | |
1746 | &(internal_ptr->u.auxent)); | |
1747 | coff_pointerize_aux (abfd, internal, symbol_ptr, i, | |
1748 | internal_ptr); | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | /* Free the raw symbols, but not the strings (if we have them). */ | |
1753 | obj_coff_keep_strings (abfd) = true; | |
1754 | if (! _bfd_coff_free_symbols (abfd)) | |
1755 | return NULL; | |
1756 | ||
1757 | for (internal_ptr = internal; internal_ptr < internal_end; | |
1758 | internal_ptr++) | |
1759 | { | |
1760 | if (internal_ptr->u.syment.n_sclass == C_FILE | |
1761 | && internal_ptr->u.syment.n_numaux > 0) | |
1762 | { | |
1763 | /* make a file symbol point to the name in the auxent, since | |
1764 | the text ".file" is redundant */ | |
1765 | if ((internal_ptr + 1)->u.auxent.x_file.x_n.x_zeroes == 0) | |
1766 | { | |
1767 | /* the filename is a long one, point into the string table */ | |
1768 | if (string_table == NULL) | |
1769 | { | |
1770 | string_table = _bfd_coff_read_string_table (abfd); | |
1771 | if (string_table == NULL) | |
1772 | return NULL; | |
1773 | } | |
1774 | ||
1775 | internal_ptr->u.syment._n._n_n._n_offset = | |
1776 | ((long) | |
1777 | (string_table | |
1778 | + (internal_ptr + 1)->u.auxent.x_file.x_n.x_offset)); | |
1779 | } | |
1780 | else | |
1781 | { | |
7bb9db4d ILT |
1782 | /* Ordinary short filename, put into memory anyway. The |
1783 | Microsoft PE tools sometimes store a filename in | |
1784 | multiple AUX entries. */ | |
ec0ef80e DD |
1785 | if (internal_ptr->u.syment.n_numaux > 1 |
1786 | && coff_data (abfd)->pe) | |
1787 | { | |
7bb9db4d ILT |
1788 | internal_ptr->u.syment._n._n_n._n_offset = |
1789 | ((long) | |
1790 | copy_name (abfd, | |
1791 | (internal_ptr + 1)->u.auxent.x_file.x_fname, | |
1792 | internal_ptr->u.syment.n_numaux * symesz)); | |
ec0ef80e DD |
1793 | } |
1794 | else | |
1795 | { | |
7bb9db4d ILT |
1796 | internal_ptr->u.syment._n._n_n._n_offset = |
1797 | ((long) | |
1798 | copy_name (abfd, | |
1799 | (internal_ptr + 1)->u.auxent.x_file.x_fname, | |
692b7d62 | 1800 | bfd_coff_filnmlen (abfd))); |
ec0ef80e | 1801 | } |
252b5132 RH |
1802 | } |
1803 | } | |
1804 | else | |
1805 | { | |
1806 | if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) | |
1807 | { | |
1808 | /* This is a "short" name. Make it long. */ | |
1809 | unsigned long i = 0; | |
1810 | char *newstring = NULL; | |
1811 | ||
1812 | /* find the length of this string without walking into memory | |
1813 | that isn't ours. */ | |
1814 | for (i = 0; i < 8; ++i) | |
1815 | { | |
1816 | if (internal_ptr->u.syment._n._n_name[i] == '\0') | |
1817 | { | |
1818 | break; | |
1819 | } /* if end of string */ | |
244148ad | 1820 | } /* possible lengths of this string. */ |
252b5132 RH |
1821 | |
1822 | if ((newstring = (PTR) bfd_alloc (abfd, ++i)) == NULL) | |
1823 | return (NULL); | |
1824 | memset (newstring, 0, i); | |
1825 | strncpy (newstring, internal_ptr->u.syment._n._n_name, i - 1); | |
1826 | internal_ptr->u.syment._n._n_n._n_offset = (long int) newstring; | |
1827 | internal_ptr->u.syment._n._n_n._n_zeroes = 0; | |
1828 | } | |
1829 | else if (internal_ptr->u.syment._n._n_n._n_offset == 0) | |
1830 | internal_ptr->u.syment._n._n_n._n_offset = (long int) ""; | |
1831 | else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment)) | |
1832 | { | |
1833 | /* Long name already. Point symbol at the string in the | |
1834 | table. */ | |
1835 | if (string_table == NULL) | |
1836 | { | |
1837 | string_table = _bfd_coff_read_string_table (abfd); | |
1838 | if (string_table == NULL) | |
1839 | return NULL; | |
1840 | } | |
1841 | internal_ptr->u.syment._n._n_n._n_offset = | |
1842 | ((long int) | |
1843 | (string_table | |
1844 | + internal_ptr->u.syment._n._n_n._n_offset)); | |
1845 | } | |
1846 | else | |
1847 | { | |
1848 | /* Long name in debug section. Very similar. */ | |
1849 | if (debug_section == NULL) | |
1850 | debug_section = build_debug_section (abfd); | |
1851 | internal_ptr->u.syment._n._n_n._n_offset = (long int) | |
1852 | (debug_section + internal_ptr->u.syment._n._n_n._n_offset); | |
1853 | } | |
1854 | } | |
1855 | internal_ptr += internal_ptr->u.syment.n_numaux; | |
1856 | } | |
1857 | ||
1858 | obj_raw_syments (abfd) = internal; | |
1859 | BFD_ASSERT (obj_raw_syment_count (abfd) | |
1860 | == (unsigned int) (internal_ptr - internal)); | |
1861 | ||
1862 | return (internal); | |
1863 | } /* coff_get_normalized_symtab() */ | |
1864 | ||
1865 | long | |
1866 | coff_get_reloc_upper_bound (abfd, asect) | |
1867 | bfd *abfd; | |
1868 | sec_ptr asect; | |
1869 | { | |
1870 | if (bfd_get_format (abfd) != bfd_object) | |
1871 | { | |
1872 | bfd_set_error (bfd_error_invalid_operation); | |
1873 | return -1; | |
1874 | } | |
1875 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
1876 | } | |
1877 | ||
1878 | asymbol * | |
1879 | coff_make_empty_symbol (abfd) | |
1880 | bfd *abfd; | |
1881 | { | |
1882 | coff_symbol_type *new = (coff_symbol_type *) bfd_alloc (abfd, sizeof (coff_symbol_type)); | |
1883 | if (new == NULL) | |
1884 | return (NULL); | |
1885 | memset (new, 0, sizeof *new); | |
1886 | new->symbol.section = 0; | |
1887 | new->native = 0; | |
1888 | new->lineno = (alent *) NULL; | |
1889 | new->done_lineno = false; | |
1890 | new->symbol.the_bfd = abfd; | |
1891 | return &new->symbol; | |
1892 | } | |
1893 | ||
1894 | /* Make a debugging symbol. */ | |
1895 | ||
1896 | asymbol * | |
1897 | coff_bfd_make_debug_symbol (abfd, ptr, sz) | |
1898 | bfd *abfd; | |
7442e600 ILT |
1899 | PTR ptr ATTRIBUTE_UNUSED; |
1900 | unsigned long sz ATTRIBUTE_UNUSED; | |
252b5132 RH |
1901 | { |
1902 | coff_symbol_type *new = (coff_symbol_type *) bfd_alloc (abfd, sizeof (coff_symbol_type)); | |
1903 | if (new == NULL) | |
1904 | return (NULL); | |
1905 | /* @@ The 10 is a guess at a plausible maximum number of aux entries | |
1906 | (but shouldn't be a constant). */ | |
1907 | new->native = (combined_entry_type *) bfd_zalloc (abfd, sizeof (combined_entry_type) * 10); | |
1908 | if (!new->native) | |
1909 | return (NULL); | |
1910 | new->symbol.section = bfd_abs_section_ptr; | |
1911 | new->symbol.flags = BSF_DEBUGGING; | |
1912 | new->lineno = (alent *) NULL; | |
1913 | new->done_lineno = false; | |
1914 | new->symbol.the_bfd = abfd; | |
1915 | return &new->symbol; | |
1916 | } | |
1917 | ||
252b5132 RH |
1918 | void |
1919 | coff_get_symbol_info (abfd, symbol, ret) | |
1920 | bfd *abfd; | |
1921 | asymbol *symbol; | |
1922 | symbol_info *ret; | |
1923 | { | |
1924 | bfd_symbol_info (symbol, ret); | |
1925 | if (coffsymbol (symbol)->native != NULL | |
1926 | && coffsymbol (symbol)->native->fix_value) | |
1927 | { | |
beb1bf64 TR |
1928 | ret->value = coffsymbol (symbol)->native->u.syment.n_value - |
1929 | (unsigned long) obj_raw_syments (abfd); | |
252b5132 RH |
1930 | } |
1931 | } | |
1932 | ||
1933 | /* Return the COFF syment for a symbol. */ | |
1934 | ||
1935 | boolean | |
1936 | bfd_coff_get_syment (abfd, symbol, psyment) | |
1937 | bfd *abfd; | |
1938 | asymbol *symbol; | |
1939 | struct internal_syment *psyment; | |
1940 | { | |
1941 | coff_symbol_type *csym; | |
1942 | ||
1943 | csym = coff_symbol_from (abfd, symbol); | |
1944 | if (csym == NULL || csym->native == NULL) | |
1945 | { | |
1946 | bfd_set_error (bfd_error_invalid_operation); | |
1947 | return false; | |
1948 | } | |
1949 | ||
1950 | *psyment = csym->native->u.syment; | |
1951 | ||
1952 | if (csym->native->fix_value) | |
beb1bf64 TR |
1953 | psyment->n_value = psyment->n_value - |
1954 | (unsigned long) obj_raw_syments (abfd); | |
252b5132 RH |
1955 | |
1956 | /* FIXME: We should handle fix_line here. */ | |
1957 | ||
1958 | return true; | |
1959 | } | |
1960 | ||
1961 | /* Return the COFF auxent for a symbol. */ | |
1962 | ||
1963 | boolean | |
1964 | bfd_coff_get_auxent (abfd, symbol, indx, pauxent) | |
1965 | bfd *abfd; | |
1966 | asymbol *symbol; | |
1967 | int indx; | |
1968 | union internal_auxent *pauxent; | |
1969 | { | |
1970 | coff_symbol_type *csym; | |
1971 | combined_entry_type *ent; | |
1972 | ||
1973 | csym = coff_symbol_from (abfd, symbol); | |
1974 | ||
1975 | if (csym == NULL | |
1976 | || csym->native == NULL | |
1977 | || indx >= csym->native->u.syment.n_numaux) | |
1978 | { | |
1979 | bfd_set_error (bfd_error_invalid_operation); | |
1980 | return false; | |
1981 | } | |
1982 | ||
1983 | ent = csym->native + indx + 1; | |
1984 | ||
1985 | *pauxent = ent->u.auxent; | |
1986 | ||
1987 | if (ent->fix_tag) | |
1988 | pauxent->x_sym.x_tagndx.l = | |
1989 | ((combined_entry_type *) pauxent->x_sym.x_tagndx.p | |
1990 | - obj_raw_syments (abfd)); | |
1991 | ||
1992 | if (ent->fix_end) | |
1993 | pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l = | |
1994 | ((combined_entry_type *) pauxent->x_sym.x_fcnary.x_fcn.x_endndx.p | |
1995 | - obj_raw_syments (abfd)); | |
1996 | ||
1997 | if (ent->fix_scnlen) | |
1998 | pauxent->x_csect.x_scnlen.l = | |
1999 | ((combined_entry_type *) pauxent->x_csect.x_scnlen.p | |
2000 | - obj_raw_syments (abfd)); | |
2001 | ||
2002 | return true; | |
2003 | } | |
2004 | ||
2005 | /* Print out information about COFF symbol. */ | |
2006 | ||
2007 | void | |
2008 | coff_print_symbol (abfd, filep, symbol, how) | |
2009 | bfd *abfd; | |
2010 | PTR filep; | |
2011 | asymbol *symbol; | |
2012 | bfd_print_symbol_type how; | |
2013 | { | |
2014 | FILE *file = (FILE *) filep; | |
2015 | ||
2016 | switch (how) | |
2017 | { | |
2018 | case bfd_print_symbol_name: | |
2019 | fprintf (file, "%s", symbol->name); | |
2020 | break; | |
2021 | ||
2022 | case bfd_print_symbol_more: | |
2023 | fprintf (file, "coff %s %s", | |
2024 | coffsymbol (symbol)->native ? "n" : "g", | |
2025 | coffsymbol (symbol)->lineno ? "l" : " "); | |
2026 | break; | |
2027 | ||
2028 | case bfd_print_symbol_all: | |
2029 | if (coffsymbol (symbol)->native) | |
2030 | { | |
beb1bf64 | 2031 | bfd_vma val; |
252b5132 RH |
2032 | unsigned int aux; |
2033 | combined_entry_type *combined = coffsymbol (symbol)->native; | |
2034 | combined_entry_type *root = obj_raw_syments (abfd); | |
2035 | struct lineno_cache_entry *l = coffsymbol (symbol)->lineno; | |
2036 | ||
2037 | fprintf (file, "[%3ld]", (long) (combined - root)); | |
2038 | ||
2039 | if (! combined->fix_value) | |
beb1bf64 | 2040 | val = (bfd_vma) combined->u.syment.n_value; |
252b5132 | 2041 | else |
beb1bf64 | 2042 | val = combined->u.syment.n_value - (unsigned long) root; |
252b5132 | 2043 | |
beb1bf64 | 2044 | #ifndef XCOFF64 |
252b5132 RH |
2045 | fprintf (file, |
2046 | "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x%08lx %s", | |
2047 | combined->u.syment.n_scnum, | |
2048 | combined->u.syment.n_flags, | |
2049 | combined->u.syment.n_type, | |
2050 | combined->u.syment.n_sclass, | |
2051 | combined->u.syment.n_numaux, | |
beb1bf64 TR |
2052 | (unsigned long) val, |
2053 | symbol->name); | |
2054 | #else | |
2055 | /* Print out the wide, 64 bit, symbol value */ | |
2056 | fprintf (file, | |
2057 | "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x%016llx %s", | |
2058 | combined->u.syment.n_scnum, | |
2059 | combined->u.syment.n_flags, | |
2060 | combined->u.syment.n_type, | |
2061 | combined->u.syment.n_sclass, | |
2062 | combined->u.syment.n_numaux, | |
252b5132 RH |
2063 | val, |
2064 | symbol->name); | |
beb1bf64 | 2065 | #endif |
252b5132 RH |
2066 | |
2067 | for (aux = 0; aux < combined->u.syment.n_numaux; aux++) | |
2068 | { | |
2069 | combined_entry_type *auxp = combined + aux + 1; | |
2070 | long tagndx; | |
2071 | ||
2072 | if (auxp->fix_tag) | |
2073 | tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root; | |
2074 | else | |
2075 | tagndx = auxp->u.auxent.x_sym.x_tagndx.l; | |
2076 | ||
2077 | fprintf (file, "\n"); | |
2078 | ||
2079 | if (bfd_coff_print_aux (abfd, file, root, combined, auxp, aux)) | |
2080 | continue; | |
2081 | ||
2082 | switch (combined->u.syment.n_sclass) | |
2083 | { | |
2084 | case C_FILE: | |
2085 | fprintf (file, "File "); | |
2086 | break; | |
2087 | ||
2088 | case C_STAT: | |
2089 | if (combined->u.syment.n_type == T_NULL) | |
2090 | /* probably a section symbol? */ | |
2091 | { | |
2092 | fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d", | |
2093 | (long) auxp->u.auxent.x_scn.x_scnlen, | |
2094 | auxp->u.auxent.x_scn.x_nreloc, | |
2095 | auxp->u.auxent.x_scn.x_nlinno); | |
2096 | if (auxp->u.auxent.x_scn.x_checksum != 0 | |
2097 | || auxp->u.auxent.x_scn.x_associated != 0 | |
2098 | || auxp->u.auxent.x_scn.x_comdat != 0) | |
2099 | fprintf (file, " checksum 0x%lx assoc %d comdat %d", | |
2100 | auxp->u.auxent.x_scn.x_checksum, | |
2101 | auxp->u.auxent.x_scn.x_associated, | |
2102 | auxp->u.auxent.x_scn.x_comdat); | |
2103 | break; | |
2104 | } | |
312191a6 ILT |
2105 | /* else fall through */ |
2106 | case C_EXT: | |
2107 | if (ISFCN (combined->u.syment.n_type)) | |
2108 | { | |
cea4409c AM |
2109 | long next, llnos; |
2110 | ||
2111 | if (auxp->fix_end) | |
2112 | next = (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2113 | - root); | |
2114 | else | |
2115 | next = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
2116 | llnos = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
312191a6 ILT |
2117 | fprintf (file, |
2118 | _("AUX tagndx %ld ttlsiz 0x%lx lnnos %ld next %ld"), | |
cea4409c AM |
2119 | tagndx, auxp->u.auxent.x_sym.x_misc.x_fsize, |
2120 | llnos, next); | |
312191a6 ILT |
2121 | break; |
2122 | } | |
252b5132 | 2123 | /* else fall through */ |
252b5132 RH |
2124 | default: |
2125 | fprintf (file, "AUX lnno %d size 0x%x tagndx %ld", | |
2126 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno, | |
2127 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size, | |
2128 | tagndx); | |
2129 | if (auxp->fix_end) | |
2130 | fprintf (file, " endndx %ld", | |
2131 | ((long) | |
2132 | (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2133 | - root))); | |
2134 | break; | |
2135 | } | |
2136 | } | |
2137 | ||
2138 | if (l) | |
2139 | { | |
2140 | fprintf (file, "\n%s :", l->u.sym->name); | |
2141 | l++; | |
2142 | while (l->line_number) | |
2143 | { | |
2144 | fprintf (file, "\n%4d : 0x%lx", | |
2145 | l->line_number, | |
2146 | ((unsigned long) | |
2147 | (l->u.offset + symbol->section->vma))); | |
2148 | l++; | |
2149 | } | |
2150 | } | |
2151 | } | |
2152 | else | |
2153 | { | |
2154 | bfd_print_symbol_vandf ((PTR) file, symbol); | |
2155 | fprintf (file, " %-5s %s %s %s", | |
2156 | symbol->section->name, | |
2157 | coffsymbol (symbol)->native ? "n" : "g", | |
2158 | coffsymbol (symbol)->lineno ? "l" : " ", | |
2159 | symbol->name); | |
2160 | } | |
2161 | } | |
2162 | } | |
2163 | ||
2164 | /* Return whether a symbol name implies a local symbol. In COFF, | |
2165 | local symbols generally start with ``.L''. Most targets use this | |
2166 | function for the is_local_label_name entry point, but some may | |
2167 | override it. */ | |
2168 | ||
2169 | boolean | |
2170 | _bfd_coff_is_local_label_name (abfd, name) | |
7442e600 | 2171 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2172 | const char *name; |
2173 | { | |
2174 | return name[0] == '.' && name[1] == 'L'; | |
2175 | } | |
2176 | ||
9a968f43 NC |
2177 | /* Provided a BFD, a section and an offset (in bytes, not octets) into the |
2178 | section, calculate and return the name of the source file and the line | |
2179 | nearest to the wanted location. */ | |
435b1e90 | 2180 | |
252b5132 RH |
2181 | boolean |
2182 | coff_find_nearest_line (abfd, section, symbols, offset, filename_ptr, | |
2183 | functionname_ptr, line_ptr) | |
2184 | bfd *abfd; | |
2185 | asection *section; | |
2186 | asymbol **symbols; | |
2187 | bfd_vma offset; | |
2188 | CONST char **filename_ptr; | |
2189 | CONST char **functionname_ptr; | |
2190 | unsigned int *line_ptr; | |
2191 | { | |
2192 | boolean found; | |
2193 | unsigned int i; | |
2194 | unsigned int line_base; | |
2195 | coff_data_type *cof = coff_data (abfd); | |
2196 | /* Run through the raw syments if available */ | |
2197 | combined_entry_type *p; | |
2198 | combined_entry_type *pend; | |
2199 | alent *l; | |
2200 | struct coff_section_tdata *sec_data; | |
2201 | ||
2202 | /* Before looking through the symbol table, try to use a .stab | |
2203 | section to find the information. */ | |
2204 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
2205 | &found, filename_ptr, | |
2206 | functionname_ptr, line_ptr, | |
51db3708 | 2207 | &coff_data(abfd)->line_info)) |
252b5132 | 2208 | return false; |
51db3708 | 2209 | |
4ca29a6a NC |
2210 | if (found) |
2211 | return true; | |
2212 | ||
51db3708 NC |
2213 | /* Also try examining DWARF2 debugging information. */ |
2214 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
2215 | filename_ptr, functionname_ptr, | |
2216 | line_ptr, 0, | |
2217 | &coff_data(abfd)->dwarf2_find_line_info)) | |
2218 | return true; | |
2219 | ||
252b5132 RH |
2220 | *filename_ptr = 0; |
2221 | *functionname_ptr = 0; | |
2222 | *line_ptr = 0; | |
2223 | ||
2224 | /* Don't try and find line numbers in a non coff file */ | |
9bd09e22 | 2225 | if (!bfd_family_coff (abfd)) |
252b5132 RH |
2226 | return false; |
2227 | ||
2228 | if (cof == NULL) | |
2229 | return false; | |
2230 | ||
2231 | /* Find the first C_FILE symbol. */ | |
2232 | p = cof->raw_syments; | |
2233 | if (!p) | |
2234 | return false; | |
2235 | ||
2236 | pend = p + cof->raw_syment_count; | |
2237 | while (p < pend) | |
2238 | { | |
2239 | if (p->u.syment.n_sclass == C_FILE) | |
2240 | break; | |
2241 | p += 1 + p->u.syment.n_numaux; | |
2242 | } | |
2243 | ||
2244 | if (p < pend) | |
2245 | { | |
2246 | bfd_vma sec_vma; | |
2247 | bfd_vma maxdiff; | |
2248 | ||
2249 | /* Look through the C_FILE symbols to find the best one. */ | |
2250 | sec_vma = bfd_get_section_vma (abfd, section); | |
2251 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; | |
2252 | maxdiff = (bfd_vma) 0 - (bfd_vma) 1; | |
2253 | while (1) | |
2254 | { | |
2255 | combined_entry_type *p2; | |
2256 | ||
2257 | for (p2 = p + 1 + p->u.syment.n_numaux; | |
2258 | p2 < pend; | |
2259 | p2 += 1 + p2->u.syment.n_numaux) | |
2260 | { | |
2261 | if (p2->u.syment.n_scnum > 0 | |
2262 | && (section | |
2263 | == coff_section_from_bfd_index (abfd, | |
2264 | p2->u.syment.n_scnum))) | |
2265 | break; | |
2266 | if (p2->u.syment.n_sclass == C_FILE) | |
2267 | { | |
2268 | p2 = pend; | |
2269 | break; | |
2270 | } | |
2271 | } | |
2272 | ||
798c1fb8 ILT |
2273 | /* We use <= MAXDIFF here so that if we get a zero length |
2274 | file, we actually use the next file entry. */ | |
252b5132 RH |
2275 | if (p2 < pend |
2276 | && offset + sec_vma >= (bfd_vma) p2->u.syment.n_value | |
798c1fb8 | 2277 | && offset + sec_vma - (bfd_vma) p2->u.syment.n_value <= maxdiff) |
252b5132 RH |
2278 | { |
2279 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; | |
2280 | maxdiff = offset + sec_vma - p2->u.syment.n_value; | |
2281 | } | |
2282 | ||
2283 | /* Avoid endless loops on erroneous files by ensuring that | |
2284 | we always move forward in the file. */ | |
cea4409c | 2285 | if (p >= cof->raw_syments + p->u.syment.n_value) |
252b5132 RH |
2286 | break; |
2287 | ||
2288 | p = cof->raw_syments + p->u.syment.n_value; | |
2289 | if (p > pend || p->u.syment.n_sclass != C_FILE) | |
2290 | break; | |
2291 | } | |
2292 | } | |
2293 | ||
2294 | /* Now wander though the raw linenumbers of the section */ | |
2295 | /* If we have been called on this section before, and the offset we | |
2296 | want is further down then we can prime the lookup loop. */ | |
2297 | sec_data = coff_section_data (abfd, section); | |
2298 | if (sec_data != NULL | |
2299 | && sec_data->i > 0 | |
2300 | && offset >= sec_data->offset) | |
2301 | { | |
2302 | i = sec_data->i; | |
2303 | *functionname_ptr = sec_data->function; | |
2304 | line_base = sec_data->line_base; | |
2305 | } | |
2306 | else | |
2307 | { | |
2308 | i = 0; | |
2309 | line_base = 0; | |
2310 | } | |
2311 | ||
2312 | if (section->lineno != NULL) | |
2313 | { | |
798c1fb8 ILT |
2314 | bfd_vma last_value = 0; |
2315 | ||
252b5132 RH |
2316 | l = §ion->lineno[i]; |
2317 | ||
2318 | for (; i < section->lineno_count; i++) | |
2319 | { | |
2320 | if (l->line_number == 0) | |
2321 | { | |
2322 | /* Get the symbol this line number points at */ | |
2323 | coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym); | |
2324 | if (coff->symbol.value > offset) | |
2325 | break; | |
2326 | *functionname_ptr = coff->symbol.name; | |
798c1fb8 | 2327 | last_value = coff->symbol.value; |
252b5132 RH |
2328 | if (coff->native) |
2329 | { | |
2330 | combined_entry_type *s = coff->native; | |
2331 | s = s + 1 + s->u.syment.n_numaux; | |
2332 | ||
2333 | /* In XCOFF a debugging symbol can follow the | |
2334 | function symbol. */ | |
2335 | if (s->u.syment.n_scnum == N_DEBUG) | |
2336 | s = s + 1 + s->u.syment.n_numaux; | |
2337 | ||
2338 | /* S should now point to the .bf of the function. */ | |
2339 | if (s->u.syment.n_numaux) | |
2340 | { | |
2341 | /* The linenumber is stored in the auxent. */ | |
2342 | union internal_auxent *a = &((s + 1)->u.auxent); | |
2343 | line_base = a->x_sym.x_misc.x_lnsz.x_lnno; | |
2344 | *line_ptr = line_base; | |
2345 | } | |
2346 | } | |
2347 | } | |
2348 | else | |
2349 | { | |
2350 | if (l->u.offset > offset) | |
2351 | break; | |
2352 | *line_ptr = l->line_number + line_base - 1; | |
2353 | } | |
2354 | l++; | |
2355 | } | |
798c1fb8 ILT |
2356 | |
2357 | /* If we fell off the end of the loop, then assume that this | |
2358 | symbol has no line number info. Otherwise, symbols with no | |
2359 | line number info get reported with the line number of the | |
2360 | last line of the last symbol which does have line number | |
2361 | info. We use 0x100 as a slop to account for cases where the | |
2362 | last line has executable code. */ | |
2363 | if (i >= section->lineno_count | |
2364 | && last_value != 0 | |
2365 | && offset - last_value > 0x100) | |
2366 | { | |
2367 | *functionname_ptr = NULL; | |
2368 | *line_ptr = 0; | |
2369 | } | |
252b5132 RH |
2370 | } |
2371 | ||
2372 | /* Cache the results for the next call. */ | |
2373 | if (sec_data == NULL && section->owner == abfd) | |
2374 | { | |
2375 | section->used_by_bfd = | |
2376 | ((PTR) bfd_zalloc (abfd, | |
2377 | sizeof (struct coff_section_tdata))); | |
2378 | sec_data = (struct coff_section_tdata *) section->used_by_bfd; | |
2379 | } | |
2380 | if (sec_data != NULL) | |
2381 | { | |
2382 | sec_data->offset = offset; | |
2383 | sec_data->i = i; | |
2384 | sec_data->function = *functionname_ptr; | |
2385 | sec_data->line_base = line_base; | |
2386 | } | |
2387 | ||
2388 | return true; | |
2389 | } | |
2390 | ||
2391 | int | |
2392 | coff_sizeof_headers (abfd, reloc) | |
2393 | bfd *abfd; | |
2394 | boolean reloc; | |
2395 | { | |
2396 | size_t size; | |
2397 | ||
2398 | if (reloc == false) | |
2399 | { | |
2400 | size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd); | |
2401 | } | |
2402 | else | |
2403 | { | |
2404 | size = bfd_coff_filhsz (abfd); | |
2405 | } | |
2406 | ||
2407 | size += abfd->section_count * bfd_coff_scnhsz (abfd); | |
2408 | return size; | |
2409 | } | |
2410 | ||
2411 | /* Change the class of a coff symbol held by BFD. */ | |
2412 | boolean | |
2413 | bfd_coff_set_symbol_class (abfd, symbol, class) | |
2414 | bfd * abfd; | |
2415 | asymbol * symbol; | |
2416 | unsigned int class; | |
2417 | { | |
2418 | coff_symbol_type * csym; | |
2419 | ||
2420 | csym = coff_symbol_from (abfd, symbol); | |
2421 | if (csym == NULL) | |
2422 | { | |
2423 | bfd_set_error (bfd_error_invalid_operation); | |
2424 | return false; | |
2425 | } | |
2426 | else if (csym->native == NULL) | |
2427 | { | |
2428 | /* This is an alien symbol which no native coff backend data. | |
2429 | We cheat here by creating a fake native entry for it and | |
2430 | then filling in the class. This code is based on that in | |
2431 | coff_write_alien_symbol(). */ | |
244148ad | 2432 | |
252b5132 RH |
2433 | combined_entry_type * native; |
2434 | ||
2435 | native = (combined_entry_type *) bfd_alloc (abfd, sizeof (* native)); | |
2436 | if (native == NULL) | |
2437 | return false; | |
2438 | ||
2439 | memset (native, 0, sizeof (* native)); | |
244148ad | 2440 | |
252b5132 RH |
2441 | native->u.syment.n_type = T_NULL; |
2442 | native->u.syment.n_sclass = class; | |
244148ad | 2443 | |
252b5132 RH |
2444 | if (bfd_is_und_section (symbol->section)) |
2445 | { | |
2446 | native->u.syment.n_scnum = N_UNDEF; | |
2447 | native->u.syment.n_value = symbol->value; | |
2448 | } | |
2449 | else if (bfd_is_com_section (symbol->section)) | |
2450 | { | |
2451 | native->u.syment.n_scnum = N_UNDEF; | |
2452 | native->u.syment.n_value = symbol->value; | |
2453 | } | |
2454 | else | |
2455 | { | |
2456 | native->u.syment.n_scnum = | |
2457 | symbol->section->output_section->target_index; | |
2458 | native->u.syment.n_value = (symbol->value | |
2459 | + symbol->section->output_offset); | |
2460 | if (! obj_pe (abfd)) | |
2461 | native->u.syment.n_value += symbol->section->output_section->vma; | |
244148ad | 2462 | |
252b5132 RH |
2463 | /* Copy the any flags from the the file header into the symbol. |
2464 | FIXME: Why? */ | |
2465 | native->u.syment.n_flags = bfd_asymbol_bfd (& csym->symbol)->flags; | |
2466 | } | |
244148ad | 2467 | |
252b5132 RH |
2468 | csym->native = native; |
2469 | } | |
2470 | else | |
2471 | { | |
2472 | csym->native->u.syment.n_sclass = class; | |
2473 | } | |
244148ad | 2474 | |
252b5132 RH |
2475 | return true; |
2476 | } |