Commit | Line | Data |
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252b5132 | 1 | /* Stabs in sections linking support. |
dc810e39 AM |
2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | Written by Ian Lance Taylor, Cygnus Support. |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | /* This file contains support for linking stabs in sections, as used | |
23 | on COFF and ELF. */ | |
24 | ||
25 | #include "bfd.h" | |
26 | #include "sysdep.h" | |
27 | #include "libbfd.h" | |
28 | #include "aout/stab_gnu.h" | |
29 | ||
30 | #include <ctype.h> | |
31 | ||
32 | /* Stabs entries use a 12 byte format: | |
33 | 4 byte string table index | |
34 | 1 byte stab type | |
35 | 1 byte stab other field | |
36 | 2 byte stab desc field | |
37 | 4 byte stab value | |
38 | FIXME: This will have to change for a 64 bit object format. | |
39 | ||
40 | The stabs symbols are divided into compilation units. For the | |
41 | first entry in each unit, the type of 0, the value is the length of | |
42 | the string table for this unit, and the desc field is the number of | |
43 | stabs symbols for this unit. */ | |
44 | ||
45 | #define STRDXOFF (0) | |
46 | #define TYPEOFF (4) | |
47 | #define OTHEROFF (5) | |
48 | #define DESCOFF (6) | |
49 | #define VALOFF (8) | |
50 | #define STABSIZE (12) | |
51 | ||
52 | /* A hash table used for header files with N_BINCL entries. */ | |
53 | ||
54 | struct stab_link_includes_table | |
55 | { | |
56 | struct bfd_hash_table root; | |
57 | }; | |
58 | ||
59 | /* A linked list of totals that we have found for a particular header | |
60 | file. */ | |
61 | ||
62 | struct stab_link_includes_totals | |
63 | { | |
64 | struct stab_link_includes_totals *next; | |
65 | bfd_vma total; | |
66 | }; | |
67 | ||
68 | /* An entry in the header file hash table. */ | |
69 | ||
70 | struct stab_link_includes_entry | |
71 | { | |
72 | struct bfd_hash_entry root; | |
73 | /* List of totals we have found for this file. */ | |
74 | struct stab_link_includes_totals *totals; | |
75 | }; | |
76 | ||
77 | /* Look up an entry in an the header file hash table. */ | |
78 | ||
79 | #define stab_link_includes_lookup(table, string, create, copy) \ | |
80 | ((struct stab_link_includes_entry *) \ | |
81 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
82 | ||
83 | /* This structure is used to hold a list of N_BINCL symbols, some of | |
84 | which might be converted into N_EXCL symbols. */ | |
85 | ||
86 | struct stab_excl_list | |
87 | { | |
88 | /* The next symbol to convert. */ | |
89 | struct stab_excl_list *next; | |
90 | /* The offset to this symbol in the section contents. */ | |
91 | bfd_size_type offset; | |
92 | /* The value to use for the symbol. */ | |
93 | bfd_vma val; | |
94 | /* The type of this symbol (N_BINCL or N_EXCL). */ | |
95 | int type; | |
96 | }; | |
97 | ||
98 | /* This structure is stored with each .stab section. */ | |
99 | ||
100 | struct stab_section_info | |
101 | { | |
102 | /* This is a linked list of N_BINCL symbols which should be | |
103 | converted into N_EXCL symbols. */ | |
104 | struct stab_excl_list *excls; | |
105 | ||
106 | /* This is used to map input stab offsets within their sections | |
107 | to output stab offsets, to take into account stabs that have | |
108 | been deleted. If it is NULL, the output offsets are the same | |
109 | as the input offsets, because no stabs have been deleted from | |
110 | this section. Otherwise the i'th entry is the number of | |
111 | bytes of stabs that have been deleted prior to the i'th | |
7b82c249 | 112 | stab. */ |
252b5132 RH |
113 | bfd_size_type *cumulative_skips; |
114 | ||
115 | /* This is an array of string indices. For each stab symbol, we | |
116 | store the string index here. If a stab symbol should not be | |
117 | included in the final output, the string index is -1. */ | |
118 | bfd_size_type stridxs[1]; | |
119 | }; | |
120 | ||
121 | /* This structure is used to keep track of stabs in sections | |
122 | information while linking. */ | |
123 | ||
124 | struct stab_info | |
125 | { | |
126 | /* A hash table used to hold stabs strings. */ | |
127 | struct bfd_strtab_hash *strings; | |
128 | /* The header file hash table. */ | |
129 | struct stab_link_includes_table includes; | |
130 | /* The first .stabstr section. */ | |
131 | asection *stabstr; | |
132 | }; | |
133 | ||
134 | static struct bfd_hash_entry *stab_link_includes_newfunc | |
135 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
136 | \f | |
137 | /* The function to create a new entry in the header file hash table. */ | |
138 | ||
139 | static struct bfd_hash_entry * | |
140 | stab_link_includes_newfunc (entry, table, string) | |
141 | struct bfd_hash_entry *entry; | |
142 | struct bfd_hash_table *table; | |
143 | const char *string; | |
144 | { | |
145 | struct stab_link_includes_entry *ret = | |
146 | (struct stab_link_includes_entry *) entry; | |
147 | ||
148 | /* Allocate the structure if it has not already been allocated by a | |
149 | subclass. */ | |
150 | if (ret == (struct stab_link_includes_entry *) NULL) | |
151 | ret = ((struct stab_link_includes_entry *) | |
152 | bfd_hash_allocate (table, | |
153 | sizeof (struct stab_link_includes_entry))); | |
154 | if (ret == (struct stab_link_includes_entry *) NULL) | |
155 | return (struct bfd_hash_entry *) ret; | |
156 | ||
157 | /* Call the allocation method of the superclass. */ | |
158 | ret = ((struct stab_link_includes_entry *) | |
159 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
160 | if (ret) | |
161 | { | |
162 | /* Set local fields. */ | |
163 | ret->totals = NULL; | |
164 | } | |
165 | ||
166 | return (struct bfd_hash_entry *) ret; | |
167 | } | |
168 | \f | |
169 | /* This function is called for each input file from the add_symbols | |
170 | pass of the linker. */ | |
171 | ||
172 | boolean | |
173 | _bfd_link_section_stabs (abfd, psinfo, stabsec, stabstrsec, psecinfo) | |
174 | bfd *abfd; | |
175 | PTR *psinfo; | |
176 | asection *stabsec; | |
177 | asection *stabstrsec; | |
178 | PTR *psecinfo; | |
179 | { | |
180 | boolean first; | |
181 | struct stab_info *sinfo; | |
dc810e39 | 182 | bfd_size_type count, amt; |
252b5132 RH |
183 | struct stab_section_info *secinfo; |
184 | bfd_byte *stabbuf = NULL; | |
185 | bfd_byte *stabstrbuf = NULL; | |
186 | bfd_byte *sym, *symend; | |
187 | bfd_size_type stroff, next_stroff, skip; | |
188 | bfd_size_type *pstridx; | |
189 | ||
190 | if (stabsec->_raw_size == 0 | |
191 | || stabstrsec->_raw_size == 0) | |
192 | { | |
193 | /* This file does not contain stabs debugging information. */ | |
194 | return true; | |
195 | } | |
196 | ||
197 | if (stabsec->_raw_size % STABSIZE != 0) | |
198 | { | |
199 | /* Something is wrong with the format of these stab symbols. | |
200 | Don't try to optimize them. */ | |
201 | return true; | |
202 | } | |
203 | ||
204 | if ((stabstrsec->flags & SEC_RELOC) != 0) | |
205 | { | |
206 | /* We shouldn't see relocations in the strings, and we aren't | |
207 | prepared to handle them. */ | |
208 | return true; | |
209 | } | |
210 | ||
211 | if ((stabsec->output_section != NULL | |
212 | && bfd_is_abs_section (stabsec->output_section)) | |
213 | || (stabstrsec->output_section != NULL | |
214 | && bfd_is_abs_section (stabstrsec->output_section))) | |
215 | { | |
216 | /* At least one of the sections is being discarded from the | |
217 | link, so we should just ignore them. */ | |
218 | return true; | |
219 | } | |
220 | ||
221 | first = false; | |
222 | ||
223 | if (*psinfo == NULL) | |
224 | { | |
225 | /* Initialize the stabs information we need to keep track of. */ | |
226 | first = true; | |
dc810e39 AM |
227 | amt = sizeof (struct stab_info); |
228 | *psinfo = (PTR) bfd_alloc (abfd, amt); | |
252b5132 RH |
229 | if (*psinfo == NULL) |
230 | goto error_return; | |
231 | sinfo = (struct stab_info *) *psinfo; | |
232 | sinfo->strings = _bfd_stringtab_init (); | |
233 | if (sinfo->strings == NULL) | |
234 | goto error_return; | |
8140b664 ILT |
235 | /* Make sure the first byte is zero. */ |
236 | (void) _bfd_stringtab_add (sinfo->strings, "", true, true); | |
252b5132 RH |
237 | if (! bfd_hash_table_init_n (&sinfo->includes.root, |
238 | stab_link_includes_newfunc, | |
239 | 251)) | |
240 | goto error_return; | |
241 | sinfo->stabstr = bfd_make_section_anyway (abfd, ".stabstr"); | |
242 | sinfo->stabstr->flags |= SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING; | |
243 | } | |
244 | ||
245 | sinfo = (struct stab_info *) *psinfo; | |
246 | ||
247 | /* Initialize the information we are going to store for this .stab | |
248 | section. */ | |
249 | ||
250 | count = stabsec->_raw_size / STABSIZE; | |
251 | ||
dc810e39 AM |
252 | amt = sizeof (struct stab_section_info); |
253 | amt += (count - 1) * sizeof (bfd_size_type); | |
254 | *psecinfo = bfd_alloc (abfd, amt); | |
252b5132 RH |
255 | if (*psecinfo == NULL) |
256 | goto error_return; | |
257 | ||
258 | secinfo = (struct stab_section_info *) *psecinfo; | |
259 | secinfo->excls = NULL; | |
260 | secinfo->cumulative_skips = NULL; | |
dc810e39 | 261 | memset (secinfo->stridxs, 0, (size_t) count * sizeof (bfd_size_type)); |
252b5132 RH |
262 | |
263 | /* Read the stabs information from abfd. */ | |
264 | ||
265 | stabbuf = (bfd_byte *) bfd_malloc (stabsec->_raw_size); | |
266 | stabstrbuf = (bfd_byte *) bfd_malloc (stabstrsec->_raw_size); | |
267 | if (stabbuf == NULL || stabstrbuf == NULL) | |
268 | goto error_return; | |
269 | ||
dc810e39 | 270 | if (! bfd_get_section_contents (abfd, stabsec, stabbuf, (bfd_vma) 0, |
252b5132 | 271 | stabsec->_raw_size) |
dc810e39 | 272 | || ! bfd_get_section_contents (abfd, stabstrsec, stabstrbuf, (bfd_vma) 0, |
252b5132 RH |
273 | stabstrsec->_raw_size)) |
274 | goto error_return; | |
275 | ||
276 | /* Look through the stabs symbols, work out the new string indices, | |
277 | and identify N_BINCL symbols which can be eliminated. */ | |
278 | ||
279 | stroff = 0; | |
280 | next_stroff = 0; | |
281 | skip = 0; | |
282 | ||
283 | symend = stabbuf + stabsec->_raw_size; | |
284 | for (sym = stabbuf, pstridx = secinfo->stridxs; | |
285 | sym < symend; | |
286 | sym += STABSIZE, ++pstridx) | |
287 | { | |
288 | int type; | |
289 | const char *string; | |
290 | ||
291 | if (*pstridx != 0) | |
292 | { | |
293 | /* This symbol has already been handled by an N_BINCL pass. */ | |
294 | continue; | |
295 | } | |
296 | ||
297 | type = sym[TYPEOFF]; | |
298 | ||
299 | if (type == 0) | |
300 | { | |
301 | /* Special type 0 stabs indicate the offset to the next | |
302 | string table. We only copy the very first one. */ | |
303 | stroff = next_stroff; | |
304 | next_stroff += bfd_get_32 (abfd, sym + 8); | |
305 | if (! first) | |
306 | { | |
307 | *pstridx = (bfd_size_type) -1; | |
308 | ++skip; | |
309 | continue; | |
310 | } | |
311 | first = false; | |
312 | } | |
313 | ||
314 | /* Store the string in the hash table, and record the index. */ | |
315 | string = ((char *) stabstrbuf | |
316 | + stroff | |
317 | + bfd_get_32 (abfd, sym + STRDXOFF)); | |
318 | *pstridx = _bfd_stringtab_add (sinfo->strings, string, true, true); | |
319 | ||
320 | /* An N_BINCL symbol indicates the start of the stabs entries | |
321 | for a header file. We need to scan ahead to the next N_EINCL | |
322 | symbol, ignoring nesting, adding up all the characters in the | |
323 | symbol names, not including the file numbers in types (the | |
324 | first number after an open parenthesis). */ | |
325 | if (type == N_BINCL) | |
326 | { | |
327 | bfd_vma val; | |
328 | int nest; | |
329 | bfd_byte *incl_sym; | |
330 | struct stab_link_includes_entry *incl_entry; | |
331 | struct stab_link_includes_totals *t; | |
332 | struct stab_excl_list *ne; | |
333 | ||
334 | val = 0; | |
335 | nest = 0; | |
336 | for (incl_sym = sym + STABSIZE; | |
337 | incl_sym < symend; | |
338 | incl_sym += STABSIZE) | |
339 | { | |
340 | int incl_type; | |
341 | ||
342 | incl_type = incl_sym[TYPEOFF]; | |
343 | if (incl_type == 0) | |
344 | break; | |
345 | else if (incl_type == N_EINCL) | |
346 | { | |
347 | if (nest == 0) | |
348 | break; | |
349 | --nest; | |
350 | } | |
351 | else if (incl_type == N_BINCL) | |
352 | ++nest; | |
353 | else if (nest == 0) | |
354 | { | |
355 | const char *str; | |
356 | ||
357 | str = ((char *) stabstrbuf | |
358 | + stroff | |
359 | + bfd_get_32 (abfd, incl_sym + STRDXOFF)); | |
360 | for (; *str != '\0'; str++) | |
361 | { | |
362 | val += *str; | |
363 | if (*str == '(') | |
364 | { | |
365 | /* Skip the file number. */ | |
366 | ++str; | |
367 | while (isdigit ((unsigned char) *str)) | |
368 | ++str; | |
369 | --str; | |
370 | } | |
371 | } | |
372 | } | |
373 | } | |
374 | ||
375 | /* If we have already included a header file with the same | |
376 | value, then replaced this one with an N_EXCL symbol. */ | |
377 | incl_entry = stab_link_includes_lookup (&sinfo->includes, string, | |
378 | true, true); | |
379 | if (incl_entry == NULL) | |
380 | goto error_return; | |
381 | ||
382 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
383 | if (t->total == val) | |
384 | break; | |
385 | ||
386 | /* Record this symbol, so that we can set the value | |
387 | correctly. */ | |
dc810e39 AM |
388 | amt = sizeof *ne; |
389 | ne = (struct stab_excl_list *) bfd_alloc (abfd, amt); | |
252b5132 RH |
390 | if (ne == NULL) |
391 | goto error_return; | |
392 | ne->offset = sym - stabbuf; | |
393 | ne->val = val; | |
394 | ne->type = N_BINCL; | |
395 | ne->next = secinfo->excls; | |
396 | secinfo->excls = ne; | |
397 | ||
398 | if (t == NULL) | |
399 | { | |
400 | /* This is the first time we have seen this header file | |
401 | with this set of stabs strings. */ | |
402 | t = ((struct stab_link_includes_totals *) | |
403 | bfd_hash_allocate (&sinfo->includes.root, sizeof *t)); | |
404 | if (t == NULL) | |
405 | goto error_return; | |
406 | t->total = val; | |
407 | t->next = incl_entry->totals; | |
408 | incl_entry->totals = t; | |
409 | } | |
410 | else | |
411 | { | |
412 | bfd_size_type *incl_pstridx; | |
413 | ||
414 | /* We have seen this header file before. Tell the final | |
415 | pass to change the type to N_EXCL. */ | |
416 | ne->type = N_EXCL; | |
417 | ||
418 | /* Mark the skipped symbols. */ | |
419 | ||
420 | nest = 0; | |
421 | for (incl_sym = sym + STABSIZE, incl_pstridx = pstridx + 1; | |
422 | incl_sym < symend; | |
423 | incl_sym += STABSIZE, ++incl_pstridx) | |
424 | { | |
425 | int incl_type; | |
426 | ||
427 | incl_type = incl_sym[TYPEOFF]; | |
428 | ||
429 | if (incl_type == N_EINCL) | |
430 | { | |
431 | if (nest == 0) | |
432 | { | |
433 | *incl_pstridx = (bfd_size_type) -1; | |
434 | ++skip; | |
435 | break; | |
436 | } | |
437 | --nest; | |
438 | } | |
439 | else if (incl_type == N_BINCL) | |
440 | ++nest; | |
441 | else if (nest == 0) | |
442 | { | |
443 | *incl_pstridx = (bfd_size_type) -1; | |
444 | ++skip; | |
445 | } | |
446 | } | |
447 | } | |
448 | } | |
449 | } | |
450 | ||
451 | free (stabbuf); | |
452 | stabbuf = NULL; | |
453 | free (stabstrbuf); | |
454 | stabstrbuf = NULL; | |
455 | ||
456 | /* We need to set the section sizes such that the linker will | |
457 | compute the output section sizes correctly. We set the .stab | |
458 | size to not include the entries we don't want. We set | |
459 | SEC_EXCLUDE for the .stabstr section, so that it will be dropped | |
460 | from the link. We record the size of the strtab in the first | |
461 | .stabstr section we saw, and make sure we don't set SEC_EXCLUDE | |
462 | for that section. */ | |
463 | stabsec->_cooked_size = (count - skip) * STABSIZE; | |
464 | if (stabsec->_cooked_size == 0) | |
465 | stabsec->flags |= SEC_EXCLUDE; | |
466 | stabstrsec->flags |= SEC_EXCLUDE; | |
467 | sinfo->stabstr->_cooked_size = _bfd_stringtab_size (sinfo->strings); | |
468 | ||
469 | /* Calculate the `cumulative_skips' array now that stabs have been | |
7b82c249 | 470 | deleted for this section. */ |
252b5132 RH |
471 | |
472 | if (skip != 0) | |
473 | { | |
474 | bfd_size_type i, offset; | |
475 | bfd_size_type *pskips; | |
476 | ||
dc810e39 AM |
477 | amt = count * sizeof (bfd_size_type); |
478 | secinfo->cumulative_skips = (bfd_size_type *) bfd_alloc (abfd, amt); | |
252b5132 RH |
479 | if (secinfo->cumulative_skips == NULL) |
480 | goto error_return; | |
481 | ||
482 | pskips = secinfo->cumulative_skips; | |
483 | pstridx = secinfo->stridxs; | |
484 | offset = 0; | |
485 | ||
486 | for (i = 0; i < count; i++, pskips++, pstridx++) | |
487 | { | |
488 | *pskips = offset; | |
489 | if (*pstridx == (bfd_size_type) -1) | |
490 | offset += STABSIZE; | |
491 | } | |
492 | ||
493 | BFD_ASSERT (offset != 0); | |
494 | } | |
495 | ||
496 | return true; | |
497 | ||
498 | error_return: | |
499 | if (stabbuf != NULL) | |
500 | free (stabbuf); | |
501 | if (stabstrbuf != NULL) | |
502 | free (stabstrbuf); | |
503 | return false; | |
504 | } | |
505 | ||
506 | /* Write out the stab section. This is called with the relocated | |
507 | contents. */ | |
508 | ||
509 | boolean | |
510 | _bfd_write_section_stabs (output_bfd, psinfo, stabsec, psecinfo, contents) | |
511 | bfd *output_bfd; | |
512 | PTR *psinfo; | |
513 | asection *stabsec; | |
514 | PTR *psecinfo; | |
515 | bfd_byte *contents; | |
516 | { | |
517 | struct stab_info *sinfo; | |
518 | struct stab_section_info *secinfo; | |
519 | struct stab_excl_list *e; | |
520 | bfd_byte *sym, *tosym, *symend; | |
521 | bfd_size_type *pstridx; | |
522 | ||
523 | sinfo = (struct stab_info *) *psinfo; | |
524 | secinfo = (struct stab_section_info *) *psecinfo; | |
525 | ||
526 | if (secinfo == NULL) | |
527 | return bfd_set_section_contents (output_bfd, stabsec->output_section, | |
dc810e39 AM |
528 | contents, |
529 | (file_ptr) stabsec->output_offset, | |
252b5132 RH |
530 | stabsec->_raw_size); |
531 | ||
532 | /* Handle each N_BINCL entry. */ | |
533 | for (e = secinfo->excls; e != NULL; e = e->next) | |
534 | { | |
535 | bfd_byte *excl_sym; | |
536 | ||
537 | BFD_ASSERT (e->offset < stabsec->_raw_size); | |
538 | excl_sym = contents + e->offset; | |
539 | bfd_put_32 (output_bfd, e->val, excl_sym + VALOFF); | |
540 | excl_sym[TYPEOFF] = e->type; | |
541 | } | |
542 | ||
543 | /* Copy over all the stabs symbols, omitting the ones we don't want, | |
544 | and correcting the string indices for those we do want. */ | |
545 | tosym = contents; | |
546 | symend = contents + stabsec->_raw_size; | |
547 | for (sym = contents, pstridx = secinfo->stridxs; | |
548 | sym < symend; | |
549 | sym += STABSIZE, ++pstridx) | |
550 | { | |
551 | if (*pstridx != (bfd_size_type) -1) | |
552 | { | |
553 | if (tosym != sym) | |
554 | memcpy (tosym, sym, STABSIZE); | |
555 | bfd_put_32 (output_bfd, *pstridx, tosym + STRDXOFF); | |
556 | ||
557 | if (sym[TYPEOFF] == 0) | |
558 | { | |
559 | /* This is the header symbol for the stabs section. We | |
560 | don't really need one, since we have merged all the | |
561 | input stabs sections into one, but we generate one | |
562 | for the benefit of readers which expect to see one. */ | |
563 | BFD_ASSERT (sym == contents); | |
564 | bfd_put_32 (output_bfd, _bfd_stringtab_size (sinfo->strings), | |
565 | tosym + VALOFF); | |
566 | bfd_put_16 (output_bfd, | |
567 | stabsec->output_section->_raw_size / STABSIZE - 1, | |
568 | tosym + DESCOFF); | |
569 | } | |
570 | ||
571 | tosym += STABSIZE; | |
572 | } | |
573 | } | |
574 | ||
575 | BFD_ASSERT ((bfd_size_type) (tosym - contents) == stabsec->_cooked_size); | |
576 | ||
577 | return bfd_set_section_contents (output_bfd, stabsec->output_section, | |
dc810e39 | 578 | contents, (file_ptr) stabsec->output_offset, |
252b5132 RH |
579 | stabsec->_cooked_size); |
580 | } | |
581 | ||
582 | /* Write out the .stabstr section. */ | |
583 | ||
584 | boolean | |
585 | _bfd_write_stab_strings (output_bfd, psinfo) | |
586 | bfd *output_bfd; | |
587 | PTR *psinfo; | |
588 | { | |
589 | struct stab_info *sinfo; | |
590 | ||
591 | sinfo = (struct stab_info *) *psinfo; | |
592 | ||
593 | if (sinfo == NULL) | |
594 | return true; | |
595 | ||
596 | if (bfd_is_abs_section (sinfo->stabstr->output_section)) | |
597 | { | |
598 | /* The section was discarded from the link. */ | |
599 | return true; | |
600 | } | |
601 | ||
602 | BFD_ASSERT ((sinfo->stabstr->output_offset | |
603 | + _bfd_stringtab_size (sinfo->strings)) | |
604 | <= sinfo->stabstr->output_section->_raw_size); | |
605 | ||
606 | if (bfd_seek (output_bfd, | |
dc810e39 AM |
607 | (file_ptr) (sinfo->stabstr->output_section->filepos |
608 | + sinfo->stabstr->output_offset), | |
252b5132 RH |
609 | SEEK_SET) != 0) |
610 | return false; | |
611 | ||
612 | if (! _bfd_stringtab_emit (output_bfd, sinfo->strings)) | |
613 | return false; | |
614 | ||
615 | /* We no longer need the stabs information. */ | |
616 | _bfd_stringtab_free (sinfo->strings); | |
617 | bfd_hash_table_free (&sinfo->includes.root); | |
618 | ||
619 | return true; | |
620 | } | |
621 | ||
622 | /* Adjust an address in the .stab section. Given OFFSET within | |
623 | STABSEC, this returns the new offset in the adjusted stab section, | |
624 | or -1 if the address refers to a stab which has been removed. */ | |
625 | ||
626 | bfd_vma | |
627 | _bfd_stab_section_offset (output_bfd, psinfo, stabsec, psecinfo, offset) | |
7442e600 ILT |
628 | bfd *output_bfd ATTRIBUTE_UNUSED; |
629 | PTR *psinfo ATTRIBUTE_UNUSED; | |
252b5132 RH |
630 | asection *stabsec; |
631 | PTR *psecinfo; | |
632 | bfd_vma offset; | |
633 | { | |
634 | struct stab_section_info *secinfo; | |
635 | ||
636 | secinfo = (struct stab_section_info *) *psecinfo; | |
637 | ||
638 | if (secinfo == NULL) | |
639 | return offset; | |
640 | ||
641 | if (offset >= stabsec->_raw_size) | |
642 | return offset - (stabsec->_cooked_size - stabsec->_raw_size); | |
643 | ||
644 | if (secinfo->cumulative_skips) | |
645 | { | |
646 | bfd_vma i; | |
647 | ||
648 | i = offset / STABSIZE; | |
649 | ||
650 | if (secinfo->stridxs [i] == (bfd_size_type) -1) | |
651 | return (bfd_vma) -1; | |
652 | ||
653 | return offset - secinfo->cumulative_skips [i]; | |
654 | } | |
655 | ||
656 | return offset; | |
657 | } |