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69645d10 | 1 | /* COFF specific linker code. |
d25079a0 | 2 | Copyright 1994, 1995 Free Software Foundation, Inc. |
69645d10 ILT |
3 | Written by Ian Lance Taylor, Cygnus Support. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
21 | /* This file contains the COFF backend linker code. */ | |
22 | ||
23 | #include "bfd.h" | |
24 | #include "sysdep.h" | |
25 | #include "bfdlink.h" | |
26 | #include "libbfd.h" | |
27 | #include "coff/internal.h" | |
28 | #include "libcoff.h" | |
29 | ||
30 | #define STRING_SIZE_SIZE (4) | |
31 | ||
32 | /* Information we keep for each section in the output file when doing | |
33 | a relocateable link. */ | |
34 | ||
35 | struct coff_link_section_info | |
36 | { | |
37 | /* The relocs to be output. */ | |
38 | struct internal_reloc *relocs; | |
39 | /* For each reloc against a global symbol whose index was not known | |
40 | when the reloc was handled, the global hash table entry. */ | |
41 | struct coff_link_hash_entry **rel_hashes; | |
42 | }; | |
43 | ||
44 | /* Information that we pass around while doing the final link step. */ | |
45 | ||
46 | struct coff_final_link_info | |
47 | { | |
48 | /* General link information. */ | |
49 | struct bfd_link_info *info; | |
50 | /* Output BFD. */ | |
51 | bfd *output_bfd; | |
52 | /* Used to indicate failure in traversal routine. */ | |
53 | boolean failed; | |
54 | /* Hash table for long symbol name. */ | |
55 | struct bfd_strtab_hash *strtab; | |
56 | /* When doing a relocateable link, an array of information kept for | |
57 | each output section, indexed by the target_index field. */ | |
58 | struct coff_link_section_info *section_info; | |
59 | /* Symbol index of last C_FILE symbol (-1 if none). */ | |
60 | long last_file_index; | |
61 | /* Contents of last C_FILE symbol. */ | |
62 | struct internal_syment last_file; | |
63 | /* Buffer large enough to hold swapped symbols of any input file. */ | |
64 | struct internal_syment *internal_syms; | |
65 | /* Buffer large enough to hold sections of symbols of any input file. */ | |
66 | asection **sec_ptrs; | |
67 | /* Buffer large enough to hold output indices of symbols of any | |
68 | input file. */ | |
69 | long *sym_indices; | |
70 | /* Buffer large enough to hold output symbols for any input file. */ | |
71 | bfd_byte *outsyms; | |
72 | /* Buffer large enough to hold external line numbers for any input | |
73 | section. */ | |
74 | bfd_byte *linenos; | |
75 | /* Buffer large enough to hold any input section. */ | |
76 | bfd_byte *contents; | |
77 | /* Buffer large enough to hold external relocs of any input section. */ | |
78 | bfd_byte *external_relocs; | |
79 | /* Buffer large enough to hold swapped relocs of any input section. */ | |
80 | struct internal_reloc *internal_relocs; | |
d25079a0 SC |
81 | |
82 | enum bfd_link_subsystem subsystem; | |
83 | bfd_link_stack_heap stack_heap_parameters; | |
69645d10 ILT |
84 | }; |
85 | ||
86 | static struct bfd_hash_entry *coff_link_hash_newfunc | |
87 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
88 | static boolean coff_link_add_object_symbols | |
89 | PARAMS ((bfd *, struct bfd_link_info *)); | |
90 | static boolean coff_link_check_archive_element | |
91 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
92 | static boolean coff_link_get_symbols PARAMS ((bfd *)); | |
93 | static const char *coff_read_string_table PARAMS ((bfd *)); | |
94 | static boolean coff_link_free_symbols PARAMS ((bfd *)); | |
95 | static boolean coff_link_check_ar_symbols | |
96 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
97 | static boolean coff_link_add_symbols PARAMS ((bfd *, struct bfd_link_info *)); | |
98 | static boolean coff_link_input_bfd | |
99 | PARAMS ((struct coff_final_link_info *, bfd *)); | |
100 | static boolean coff_write_global_sym | |
101 | PARAMS ((struct coff_link_hash_entry *, PTR)); | |
102 | static boolean coff_reloc_link_order | |
103 | PARAMS ((bfd *, struct coff_final_link_info *, asection *, | |
104 | struct bfd_link_order *)); | |
105 | ||
d25079a0 SC |
106 | |
107 | /* These new data and data types are used to keep track of the .idata$4 and | |
108 | .idata$5 relocations which are put into the .idata section for all of the | |
109 | *.dll input libraries linked in. This is not a great solution, and may | |
110 | break in the future if MS changes the format of its libraries, but it | |
111 | does work for the collection of mstools libraries we are currently working | |
112 | with. The main problem is that there are some new majic symbols defined | |
113 | in the libraries which are non-standard coff and simply aren't handled | |
114 | completely by ld. What has been included here will help finish up the job. | |
115 | Basically, during the link, .idata$4 and .idata$5 pointers are correctly | |
116 | relocated to the image. At the very end of the link, the .idata$2 | |
117 | information is written. This data appears at the beginning of the .idata | |
118 | section and a 'set' of information appears for each *.dll passed in. | |
119 | Each set of information consists of 3 addresses, a pointer to the .idata$4 | |
120 | start, a pointer to .idata$6 (which has the name of the dll), and a pointer | |
121 | to .idata$5 start. The idata$4 and 5 information is a list of pointers | |
122 | which appear to point to the name of various functions found within the dll. | |
123 | When invoked, the loader will write over these names with the correct | |
124 | addresses to use for these functions. | |
125 | Without this 'fix', all information appears correctly except for the | |
126 | addresses of the .idata$4 and 5 starts within the .idata$2 portion of the | |
127 | .idata section. What we will do is to keep track of the dll's processed | |
128 | and the number of functions needed from each dll. From this information | |
129 | we can correctly compute the start of the idata$4 and 5 lists for each | |
130 | dll in the idata section */ | |
131 | static int num_DLLs_done = 0; | |
132 | static int num_DLLs = 0; | |
133 | static int all_entries = 0; | |
134 | struct DLL_struct { | |
135 | const char * DLL_name; | |
136 | int num_entries; | |
137 | }; | |
138 | struct DLL_struct MS_DLL[10]; | |
139 | static bfd_vma idata_4_prev = 0; | |
140 | static bfd_vma idata_5_prev = 0; | |
141 | static bfd_vma add_to_val = 0; | |
142 | ||
143 | ||
144 | ||
69645d10 ILT |
145 | /* Create an entry in a COFF linker hash table. */ |
146 | ||
147 | static struct bfd_hash_entry * | |
148 | coff_link_hash_newfunc (entry, table, string) | |
149 | struct bfd_hash_entry *entry; | |
150 | struct bfd_hash_table *table; | |
151 | const char *string; | |
152 | { | |
153 | struct coff_link_hash_entry *ret = (struct coff_link_hash_entry *) entry; | |
154 | ||
155 | /* Allocate the structure if it has not already been allocated by a | |
156 | subclass. */ | |
157 | if (ret == (struct coff_link_hash_entry *) NULL) | |
158 | ret = ((struct coff_link_hash_entry *) | |
159 | bfd_hash_allocate (table, sizeof (struct coff_link_hash_entry))); | |
160 | if (ret == (struct coff_link_hash_entry *) NULL) | |
161 | { | |
162 | bfd_set_error (bfd_error_no_memory); | |
163 | return (struct bfd_hash_entry *) ret; | |
164 | } | |
165 | ||
166 | /* Call the allocation method of the superclass. */ | |
167 | ret = ((struct coff_link_hash_entry *) | |
168 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
169 | table, string)); | |
170 | if (ret != (struct coff_link_hash_entry *) NULL) | |
171 | { | |
172 | /* Set local fields. */ | |
173 | ret->indx = -1; | |
174 | ret->type = T_NULL; | |
175 | ret->class = C_NULL; | |
176 | ret->numaux = 0; | |
177 | ret->auxbfd = NULL; | |
178 | ret->aux = NULL; | |
179 | } | |
180 | ||
181 | return (struct bfd_hash_entry *) ret; | |
182 | } | |
183 | ||
184 | /* Create a COFF linker hash table. */ | |
185 | ||
186 | struct bfd_link_hash_table * | |
187 | _bfd_coff_link_hash_table_create (abfd) | |
188 | bfd *abfd; | |
189 | { | |
190 | struct coff_link_hash_table *ret; | |
191 | ||
192 | ret = ((struct coff_link_hash_table *) | |
193 | malloc (sizeof (struct coff_link_hash_table))); | |
194 | if (ret == NULL) | |
195 | { | |
196 | bfd_set_error (bfd_error_no_memory); | |
197 | return NULL; | |
198 | } | |
199 | if (! _bfd_link_hash_table_init (&ret->root, abfd, | |
200 | coff_link_hash_newfunc)) | |
201 | { | |
202 | free (ret); | |
203 | return (struct bfd_link_hash_table *) NULL; | |
204 | } | |
205 | return &ret->root; | |
206 | } | |
207 | ||
208 | /* Given a COFF BFD, add symbols to the global hash table as | |
209 | appropriate. */ | |
210 | ||
211 | boolean | |
212 | _bfd_coff_link_add_symbols (abfd, info) | |
213 | bfd *abfd; | |
214 | struct bfd_link_info *info; | |
215 | { | |
216 | switch (bfd_get_format (abfd)) | |
217 | { | |
218 | case bfd_object: | |
219 | return coff_link_add_object_symbols (abfd, info); | |
220 | case bfd_archive: | |
221 | return (_bfd_generic_link_add_archive_symbols | |
222 | (abfd, info, coff_link_check_archive_element)); | |
223 | default: | |
224 | bfd_set_error (bfd_error_wrong_format); | |
225 | return false; | |
226 | } | |
227 | } | |
228 | ||
229 | /* Add symbols from a COFF object file. */ | |
230 | ||
231 | static boolean | |
232 | coff_link_add_object_symbols (abfd, info) | |
233 | bfd *abfd; | |
234 | struct bfd_link_info *info; | |
235 | { | |
236 | if (! coff_link_get_symbols (abfd)) | |
237 | return false; | |
238 | if (! coff_link_add_symbols (abfd, info)) | |
239 | return false; | |
240 | if (! info->keep_memory) | |
241 | { | |
242 | if (! coff_link_free_symbols (abfd)) | |
243 | return false; | |
244 | } | |
245 | return true; | |
246 | } | |
247 | ||
248 | /* Check a single archive element to see if we need to include it in | |
249 | the link. *PNEEDED is set according to whether this element is | |
250 | needed in the link or not. This is called via | |
251 | _bfd_generic_link_add_archive_symbols. */ | |
252 | ||
253 | static boolean | |
254 | coff_link_check_archive_element (abfd, info, pneeded) | |
255 | bfd *abfd; | |
256 | struct bfd_link_info *info; | |
257 | boolean *pneeded; | |
258 | { | |
259 | if (! coff_link_get_symbols (abfd)) | |
260 | return false; | |
261 | ||
262 | if (! coff_link_check_ar_symbols (abfd, info, pneeded)) | |
263 | return false; | |
264 | ||
265 | if (*pneeded) | |
266 | { | |
267 | if (! coff_link_add_symbols (abfd, info)) | |
268 | return false; | |
269 | } | |
270 | ||
271 | if (! info->keep_memory || ! *pneeded) | |
272 | { | |
273 | if (! coff_link_free_symbols (abfd)) | |
274 | return false; | |
275 | } | |
276 | ||
277 | return true; | |
278 | } | |
279 | ||
280 | /* Read in the external symbols. */ | |
281 | ||
282 | static boolean | |
283 | coff_link_get_symbols (abfd) | |
284 | bfd *abfd; | |
285 | { | |
286 | bfd_size_type symesz; | |
287 | size_t size; | |
288 | PTR syms; | |
289 | ||
290 | if (obj_coff_external_syms (abfd) != NULL) | |
291 | return true; | |
292 | ||
293 | symesz = bfd_coff_symesz (abfd); | |
294 | ||
295 | size = obj_raw_syment_count (abfd) * symesz; | |
296 | ||
297 | syms = malloc (size); | |
298 | if (syms == NULL && size != 0) | |
299 | { | |
300 | bfd_set_error (bfd_error_no_memory); | |
301 | return false; | |
302 | } | |
303 | ||
304 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
305 | || bfd_read (syms, size, 1, abfd) != size) | |
306 | { | |
307 | if (syms != NULL) | |
308 | free (syms); | |
309 | return false; | |
310 | } | |
311 | ||
312 | obj_coff_external_syms (abfd) = syms; | |
313 | ||
314 | return true; | |
315 | } | |
316 | ||
317 | /* Read in the external strings. The strings are not loaded until | |
318 | they are needed. This is because we have no simple way of | |
319 | detecting a missing string table in an archive. */ | |
320 | ||
321 | static const char * | |
322 | coff_read_string_table (abfd) | |
323 | bfd *abfd; | |
324 | { | |
325 | char extstrsize[STRING_SIZE_SIZE]; | |
326 | size_t strsize; | |
327 | char *strings; | |
328 | ||
329 | if (obj_coff_strings (abfd) != NULL) | |
330 | return obj_coff_strings (abfd); | |
331 | ||
332 | if (bfd_seek (abfd, | |
333 | (obj_sym_filepos (abfd) | |
334 | + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd)), | |
335 | SEEK_SET) != 0) | |
336 | return NULL; | |
337 | ||
338 | if (bfd_read (extstrsize, sizeof extstrsize, 1, abfd) != sizeof extstrsize) | |
339 | { | |
340 | if (bfd_get_error () != bfd_error_file_truncated) | |
341 | return NULL; | |
342 | ||
343 | /* There is no string table. */ | |
344 | strsize = STRING_SIZE_SIZE; | |
345 | } | |
346 | else | |
347 | { | |
348 | #if STRING_SIZE_SIZE == 4 | |
d25079a0 | 349 | strsize = bfd_h_get_32 (abfd, (bfd_byte *) extstrsize); |
69645d10 ILT |
350 | #else |
351 | #error Change bfd_h_get_32 | |
352 | #endif | |
353 | } | |
354 | ||
355 | strings = malloc (strsize); | |
356 | if (strings == NULL) | |
357 | { | |
358 | bfd_set_error (bfd_error_no_memory); | |
359 | return NULL; | |
360 | } | |
361 | ||
362 | if (bfd_read (strings + STRING_SIZE_SIZE, | |
363 | strsize - STRING_SIZE_SIZE, 1, abfd) | |
364 | != strsize - STRING_SIZE_SIZE) | |
365 | { | |
366 | free (strings); | |
367 | return NULL; | |
368 | } | |
369 | ||
370 | obj_coff_strings (abfd) = strings; | |
371 | ||
372 | return strings; | |
373 | } | |
374 | ||
375 | /* Free up the external symbols and strings read from a COFF file. */ | |
376 | ||
377 | static boolean | |
378 | coff_link_free_symbols (abfd) | |
379 | bfd *abfd; | |
380 | { | |
381 | if (obj_coff_external_syms (abfd) != NULL) | |
382 | { | |
383 | free (obj_coff_external_syms (abfd)); | |
384 | obj_coff_external_syms (abfd) = NULL; | |
385 | } | |
386 | if (obj_coff_strings (abfd) != NULL) | |
387 | { | |
388 | free (obj_coff_strings (abfd)); | |
389 | obj_coff_strings (abfd) = NULL; | |
390 | } | |
391 | return true; | |
392 | } | |
393 | ||
394 | /* Look through the symbols to see if this object file should be | |
395 | included in the link. */ | |
396 | ||
397 | static boolean | |
398 | coff_link_check_ar_symbols (abfd, info, pneeded) | |
399 | bfd *abfd; | |
400 | struct bfd_link_info *info; | |
401 | boolean *pneeded; | |
402 | { | |
403 | boolean (*sym_is_global) PARAMS ((bfd *, struct internal_syment *)); | |
404 | const char *strings; | |
405 | bfd_size_type symesz; | |
406 | bfd_byte *esym; | |
407 | bfd_byte *esym_end; | |
408 | ||
409 | *pneeded = false; | |
410 | ||
411 | sym_is_global = coff_backend_info (abfd)->_bfd_coff_sym_is_global; | |
412 | strings = NULL; | |
413 | ||
414 | symesz = bfd_coff_symesz (abfd); | |
415 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
416 | esym_end = esym + obj_raw_syment_count (abfd) * symesz; | |
417 | while (esym < esym_end) | |
418 | { | |
419 | struct internal_syment sym; | |
420 | ||
421 | bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); | |
422 | ||
423 | if ((sym.n_sclass == C_EXT | |
424 | || (sym_is_global && (*sym_is_global) (abfd, &sym))) | |
425 | && (sym.n_scnum != 0 || sym.n_value != 0)) | |
426 | { | |
427 | const char *name; | |
428 | char buf[SYMNMLEN + 1]; | |
429 | struct bfd_link_hash_entry *h; | |
430 | ||
431 | /* This symbol is externally visible, and is defined by this | |
432 | object file. */ | |
433 | ||
434 | /* FIXME: It's not clear this will work correctly if sizeof | |
435 | (_n_zeroes) != 4. */ | |
436 | if (sym._n._n_n._n_zeroes != 0 | |
437 | || sym._n._n_n._n_offset == 0) | |
438 | { | |
439 | memcpy (buf, sym._n._n_name, SYMNMLEN); | |
440 | buf[SYMNMLEN] = '\0'; | |
441 | name = buf; | |
442 | } | |
443 | else | |
444 | { | |
445 | BFD_ASSERT (sym._n._n_n._n_offset >= STRING_SIZE_SIZE); | |
446 | if (strings == NULL) | |
447 | { | |
448 | strings = coff_read_string_table (abfd); | |
449 | if (strings == NULL) | |
450 | return false; | |
451 | } | |
452 | name = strings + sym._n._n_n._n_offset; | |
453 | } | |
454 | ||
455 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); | |
456 | ||
457 | /* We are only interested in symbols that are currently | |
458 | undefined. If a symbol is currently known to be common, | |
459 | COFF linkers do not bring in an object file which defines | |
460 | it. */ | |
461 | if (h != (struct bfd_link_hash_entry *) NULL | |
462 | && h->type == bfd_link_hash_undefined) | |
463 | { | |
464 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
465 | return false; | |
466 | *pneeded = true; | |
467 | return true; | |
468 | } | |
469 | } | |
470 | ||
471 | esym += (sym.n_numaux + 1) * symesz; | |
472 | } | |
473 | ||
474 | /* We do not need this object file. */ | |
475 | return true; | |
476 | } | |
477 | ||
478 | /* Add all the symbols from an object file to the hash table. */ | |
479 | ||
480 | static boolean | |
481 | coff_link_add_symbols (abfd, info) | |
482 | bfd *abfd; | |
483 | struct bfd_link_info *info; | |
484 | { | |
485 | boolean (*sym_is_global) PARAMS ((bfd *, struct internal_syment *)); | |
486 | const char *strings; | |
487 | boolean default_copy; | |
488 | bfd_size_type symcount; | |
489 | struct coff_link_hash_entry **sym_hash; | |
490 | bfd_size_type symesz; | |
491 | bfd_byte *esym; | |
492 | bfd_byte *esym_end; | |
493 | ||
494 | sym_is_global = coff_backend_info (abfd)->_bfd_coff_sym_is_global; | |
495 | strings = NULL; | |
496 | ||
497 | if (info->keep_memory) | |
498 | default_copy = false; | |
499 | else | |
500 | default_copy = true; | |
501 | ||
502 | symcount = obj_raw_syment_count (abfd); | |
503 | ||
504 | /* We keep a list of the linker hash table entries that correspond | |
505 | to particular symbols. */ | |
506 | sym_hash = ((struct coff_link_hash_entry **) | |
507 | bfd_alloc (abfd, | |
508 | ((size_t) symcount | |
509 | * sizeof (struct coff_link_hash_entry *)))); | |
510 | if (sym_hash == NULL && symcount != 0) | |
511 | { | |
512 | bfd_set_error (bfd_error_no_memory); | |
513 | return false; | |
514 | } | |
515 | obj_coff_sym_hashes (abfd) = sym_hash; | |
516 | memset (sym_hash, 0, | |
517 | (size_t) symcount * sizeof (struct coff_link_hash_entry *)); | |
518 | ||
519 | symesz = bfd_coff_symesz (abfd); | |
520 | BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); | |
521 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
522 | esym_end = esym + symcount * symesz; | |
523 | while (esym < esym_end) | |
524 | { | |
525 | struct internal_syment sym; | |
526 | boolean copy; | |
527 | ||
528 | bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); | |
529 | ||
530 | if (sym.n_sclass == C_EXT | |
531 | || (sym_is_global && (*sym_is_global) (abfd, &sym))) | |
532 | { | |
533 | const char *name; | |
534 | char buf[SYMNMLEN + 1]; | |
535 | flagword flags; | |
536 | asection *section; | |
537 | bfd_vma value; | |
538 | ||
539 | /* This symbol is externally visible. */ | |
540 | ||
541 | /* FIXME: It's not clear this will work correctly if sizeof | |
542 | (_n_zeroes) != 4. */ | |
543 | copy = default_copy; | |
544 | if (sym._n._n_n._n_zeroes == 0 | |
545 | && sym._n._n_n._n_offset != 0) | |
546 | { | |
547 | BFD_ASSERT (sym._n._n_n._n_offset >= STRING_SIZE_SIZE); | |
548 | if (strings == NULL) | |
549 | { | |
550 | strings = coff_read_string_table (abfd); | |
551 | if (strings == NULL) | |
552 | return false; | |
553 | } | |
554 | name = strings + sym._n._n_n._n_offset; | |
555 | } | |
556 | else | |
557 | { | |
558 | memcpy (buf, sym._n._n_name, SYMNMLEN); | |
559 | buf[SYMNMLEN] = '\0'; | |
560 | name = buf; | |
561 | copy = true; | |
562 | } | |
563 | ||
564 | value = sym.n_value; | |
565 | ||
566 | if (sym.n_scnum == 0) | |
567 | { | |
568 | if (value == 0) | |
569 | { | |
570 | flags = 0; | |
571 | section = bfd_und_section_ptr; | |
572 | } | |
573 | else | |
574 | { | |
575 | flags = BSF_GLOBAL; | |
576 | section = bfd_com_section_ptr; | |
577 | } | |
578 | } | |
579 | else | |
580 | { | |
581 | flags = BSF_EXPORT | BSF_GLOBAL; | |
582 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
583 | value -= section->vma; | |
584 | } | |
585 | ||
586 | if (! (_bfd_generic_link_add_one_symbol | |
587 | (info, abfd, name, flags, section, value, | |
588 | (const char *) NULL, copy, false, | |
589 | (struct bfd_link_hash_entry **) sym_hash))) | |
590 | return false; | |
591 | ||
592 | if (info->hash->creator->flavour == bfd_get_flavour (abfd)) | |
593 | { | |
594 | if (((*sym_hash)->class == C_NULL | |
595 | && (*sym_hash)->type == T_NULL) | |
596 | || sym.n_scnum != 0 | |
597 | || (sym.n_value != 0 | |
598 | && (*sym_hash)->root.type != bfd_link_hash_defined)) | |
599 | { | |
600 | (*sym_hash)->class = sym.n_sclass; | |
601 | (*sym_hash)->type = sym.n_type; | |
602 | (*sym_hash)->numaux = sym.n_numaux; | |
603 | (*sym_hash)->auxbfd = abfd; | |
604 | if (sym.n_numaux != 0) | |
605 | { | |
606 | union internal_auxent *alloc; | |
607 | unsigned int i; | |
608 | bfd_byte *eaux; | |
609 | union internal_auxent *iaux; | |
610 | ||
d25079a0 SC |
611 | alloc = ((union internal_auxent *) |
612 | bfd_hash_allocate (&info->hash->table, | |
613 | (sym.n_numaux | |
614 | * sizeof (*alloc)))); | |
69645d10 ILT |
615 | if (alloc == NULL) |
616 | { | |
617 | bfd_set_error (bfd_error_no_memory); | |
618 | return false; | |
619 | } | |
620 | for (i = 0, eaux = esym + symesz, iaux = alloc; | |
621 | i < sym.n_numaux; | |
622 | i++, eaux += symesz, iaux++) | |
623 | bfd_coff_swap_aux_in (abfd, (PTR) eaux, sym.n_type, | |
624 | sym.n_sclass, i, sym.n_numaux, | |
625 | (PTR) iaux); | |
626 | (*sym_hash)->aux = alloc; | |
627 | } | |
628 | } | |
629 | } | |
630 | } | |
631 | ||
632 | esym += (sym.n_numaux + 1) * symesz; | |
633 | sym_hash += sym.n_numaux + 1; | |
634 | } | |
635 | ||
636 | return true; | |
637 | } | |
638 | ||
d25079a0 SC |
639 | /* parse out a -heap <reserved>,<commit> line */ |
640 | ||
641 | static char * | |
642 | dores_com (ptr, def,res, com) | |
643 | char *ptr; | |
644 | int *def; | |
645 | int *res; | |
646 | int *com; | |
647 | { | |
648 | *def = 1; | |
649 | *res = strtoul (ptr, &ptr, 0); | |
650 | if (ptr[0] == ',') | |
651 | *com = strtoul (ptr+1, &ptr, 0); | |
652 | return ptr; | |
653 | } | |
654 | ||
655 | static char *get_name(ptr, dst) | |
656 | char *ptr; | |
657 | char **dst; | |
658 | { | |
659 | while (*ptr == ' ') | |
660 | ptr++; | |
661 | *dst = ptr; | |
662 | while (*ptr && *ptr != ' ') | |
663 | ptr++; | |
664 | *ptr = 0; | |
665 | return ptr+1; | |
666 | } | |
667 | /* Process any magic embedded commands in a section called .drectve */ | |
668 | ||
669 | static int | |
670 | process_embedded_commands (abfd) | |
671 | bfd *abfd; | |
672 | { | |
673 | asection *sec = bfd_get_section_by_name (abfd, ".drectve"); | |
674 | char *s; | |
675 | char *e; | |
676 | char *copy; | |
89665c85 | 677 | if (!sec) |
d25079a0 | 678 | return 1; |
89665c85 | 679 | |
d25079a0 SC |
680 | copy = malloc (sec->_raw_size); |
681 | if (!copy) | |
682 | { | |
683 | bfd_set_error (bfd_error_no_memory); | |
684 | return 0; | |
685 | } | |
686 | if (! bfd_get_section_contents(abfd, sec, copy, 0, sec->_raw_size)) | |
687 | { | |
688 | free (copy); | |
689 | return 0; | |
690 | } | |
691 | e = copy + sec->_raw_size; | |
692 | for (s = copy; s < e ; ) | |
693 | { | |
694 | if (s[0]!= '-') { | |
695 | s++; | |
696 | continue; | |
697 | } | |
698 | if (strncmp (s,"-attr", 5) == 0) | |
699 | { | |
700 | char *name; | |
701 | char *attribs; | |
702 | asection *asec; | |
703 | ||
704 | int loop = 1; | |
705 | int had_write = 0; | |
706 | int had_read = 0; | |
707 | int had_exec= 0; | |
708 | int had_shared= 0; | |
709 | s += 5; | |
710 | s = get_name(s, &name); | |
711 | s = get_name(s, &attribs); | |
712 | while (loop) { | |
713 | switch (*attribs++) | |
714 | { | |
715 | case 'W': | |
716 | had_write = 1; | |
717 | break; | |
718 | case 'R': | |
719 | had_read = 1; | |
720 | break; | |
721 | case 'S': | |
722 | had_shared = 1; | |
723 | break; | |
724 | case 'X': | |
725 | had_exec = 1; | |
726 | break; | |
727 | default: | |
728 | loop = 0; | |
729 | } | |
730 | } | |
731 | asec = bfd_get_section_by_name (abfd, name); | |
732 | if (asec) { | |
733 | if (had_exec) | |
734 | asec->flags |= SEC_CODE; | |
735 | if (!had_write) | |
736 | asec->flags |= SEC_READONLY; | |
737 | } | |
738 | } | |
739 | else if (strncmp (s,"-heap", 5) == 0) | |
740 | { | |
741 | s = dores_com (s+5, | |
742 | &NT_stack_heap.heap_defined, | |
743 | &NT_stack_heap.heap_reserve, | |
744 | &NT_stack_heap.heap_commit); | |
745 | } | |
746 | else if (strncmp (s,"-stack", 6) == 0) | |
747 | { | |
748 | s = dores_com (s+6, | |
749 | &NT_stack_heap.heap_defined, | |
750 | &NT_stack_heap.heap_reserve, | |
751 | &NT_stack_heap.heap_commit); | |
752 | } | |
753 | else | |
754 | s++; | |
755 | } | |
756 | free (copy); | |
757 | return 1; | |
758 | } | |
69645d10 ILT |
759 | /* Do the final link step. */ |
760 | ||
761 | boolean | |
762 | _bfd_coff_final_link (abfd, info) | |
763 | bfd *abfd; | |
764 | struct bfd_link_info *info; | |
765 | { | |
766 | bfd_size_type symesz; | |
767 | struct coff_final_link_info finfo; | |
768 | asection *o; | |
769 | struct bfd_link_order *p; | |
770 | size_t max_contents_size; | |
771 | size_t max_sym_count; | |
772 | size_t max_lineno_count; | |
773 | size_t max_reloc_count; | |
774 | size_t max_output_reloc_count; | |
775 | file_ptr rel_filepos; | |
776 | unsigned int relsz; | |
777 | file_ptr line_filepos; | |
778 | unsigned int linesz; | |
779 | bfd *sub; | |
780 | bfd_byte *external_relocs = NULL; | |
781 | char strbuf[STRING_SIZE_SIZE]; | |
782 | ||
783 | symesz = bfd_coff_symesz (abfd); | |
784 | ||
785 | finfo.info = info; | |
786 | finfo.output_bfd = abfd; | |
787 | finfo.strtab = NULL; | |
788 | finfo.section_info = NULL; | |
789 | finfo.last_file_index = -1; | |
790 | finfo.internal_syms = NULL; | |
791 | finfo.sec_ptrs = NULL; | |
792 | finfo.sym_indices = NULL; | |
793 | finfo.outsyms = NULL; | |
794 | finfo.linenos = NULL; | |
795 | finfo.contents = NULL; | |
796 | finfo.external_relocs = NULL; | |
797 | finfo.internal_relocs = NULL; | |
798 | ||
d25079a0 SC |
799 | if (obj_pe(abfd)) |
800 | { | |
801 | /* store the subsystem, stack and heap parameters in variables defined | |
802 | in internal.h so that when they are needed to write the NT optional | |
803 | file header (coffcode.h), they will be available */ | |
804 | NT_subsystem = info->subsystem; | |
805 | NT_stack_heap = info->stack_heap_parameters; | |
806 | } | |
807 | ||
69645d10 ILT |
808 | finfo.strtab = _bfd_stringtab_init (); |
809 | if (finfo.strtab == NULL) | |
810 | goto error_return; | |
811 | ||
812 | /* Compute the file positions for all the sections. */ | |
813 | if (! abfd->output_has_begun) | |
814 | bfd_coff_compute_section_file_positions (abfd); | |
815 | ||
816 | /* Count the line numbers and relocation entries required for the | |
817 | output file. Set the file positions for the relocs. */ | |
818 | rel_filepos = obj_relocbase (abfd); | |
819 | relsz = bfd_coff_relsz (abfd); | |
820 | max_contents_size = 0; | |
821 | max_lineno_count = 0; | |
822 | max_reloc_count = 0; | |
823 | for (o = abfd->sections; o != NULL; o = o->next) | |
824 | { | |
825 | o->reloc_count = 0; | |
826 | o->lineno_count = 0; | |
827 | for (p = o->link_order_head; p != NULL; p = p->next) | |
828 | { | |
829 | if (p->type == bfd_indirect_link_order) | |
830 | { | |
831 | asection *sec; | |
832 | ||
833 | sec = p->u.indirect.section; | |
834 | ||
835 | if (info->strip == strip_none | |
836 | || info->strip == strip_some) | |
837 | o->lineno_count += sec->lineno_count; | |
838 | ||
839 | if (info->relocateable) | |
840 | o->reloc_count += sec->reloc_count; | |
841 | ||
842 | if (sec->_raw_size > max_contents_size) | |
843 | max_contents_size = sec->_raw_size; | |
844 | if (sec->lineno_count > max_lineno_count) | |
845 | max_lineno_count = sec->lineno_count; | |
846 | if (sec->reloc_count > max_reloc_count) | |
847 | max_reloc_count = sec->reloc_count; | |
848 | } | |
849 | else if (info->relocateable | |
850 | && (p->type == bfd_section_reloc_link_order | |
851 | || p->type == bfd_symbol_reloc_link_order)) | |
852 | ++o->reloc_count; | |
853 | } | |
854 | if (o->reloc_count == 0) | |
855 | o->rel_filepos = 0; | |
856 | else | |
857 | { | |
858 | o->flags |= SEC_RELOC; | |
859 | o->rel_filepos = rel_filepos; | |
860 | rel_filepos += o->reloc_count * relsz; | |
861 | } | |
862 | } | |
863 | ||
864 | /* If doing a relocateable link, allocate space for the pointers we | |
865 | need to keep. */ | |
866 | if (info->relocateable) | |
867 | { | |
868 | unsigned int i; | |
869 | ||
2a895595 ILT |
870 | /* We use section_count + 1, rather than section_count, because |
871 | the target_index fields are 1 based. */ | |
69645d10 | 872 | finfo.section_info = ((struct coff_link_section_info *) |
2a895595 | 873 | malloc ((abfd->section_count + 1) |
69645d10 ILT |
874 | * sizeof (struct coff_link_section_info))); |
875 | if (finfo.section_info == NULL) | |
876 | { | |
877 | bfd_set_error (bfd_error_no_memory); | |
878 | goto error_return; | |
879 | } | |
2a895595 | 880 | for (i = 0; i <= abfd->section_count; i++) |
69645d10 ILT |
881 | { |
882 | finfo.section_info[i].relocs = NULL; | |
883 | finfo.section_info[i].rel_hashes = NULL; | |
884 | } | |
885 | } | |
886 | ||
887 | /* We now know the size of the relocs, so we can determine the file | |
888 | positions of the line numbers. */ | |
889 | line_filepos = rel_filepos; | |
890 | linesz = bfd_coff_linesz (abfd); | |
891 | max_output_reloc_count = 0; | |
892 | for (o = abfd->sections; o != NULL; o = o->next) | |
893 | { | |
894 | if (o->lineno_count == 0) | |
895 | o->line_filepos = 0; | |
896 | else | |
897 | { | |
898 | o->line_filepos = line_filepos; | |
899 | line_filepos += o->lineno_count * linesz; | |
900 | } | |
901 | ||
902 | if (o->reloc_count != 0) | |
903 | { | |
904 | /* We don't know the indices of global symbols until we have | |
905 | written out all the local symbols. For each section in | |
906 | the output file, we keep an array of pointers to hash | |
907 | table entries. Each entry in the array corresponds to a | |
908 | reloc. When we find a reloc against a global symbol, we | |
909 | set the corresponding entry in this array so that we can | |
910 | fix up the symbol index after we have written out all the | |
911 | local symbols. | |
912 | ||
913 | Because of this problem, we also keep the relocs in | |
914 | memory until the end of the link. This wastes memory, | |
915 | but only when doing a relocateable link, which is not the | |
916 | common case. */ | |
917 | BFD_ASSERT (info->relocateable); | |
918 | finfo.section_info[o->target_index].relocs = | |
919 | ((struct internal_reloc *) | |
920 | malloc (o->reloc_count * sizeof (struct internal_reloc))); | |
921 | finfo.section_info[o->target_index].rel_hashes = | |
922 | ((struct coff_link_hash_entry **) | |
923 | malloc (o->reloc_count | |
924 | * sizeof (struct coff_link_hash_entry *))); | |
925 | if (finfo.section_info[o->target_index].relocs == NULL | |
926 | || finfo.section_info[o->target_index].rel_hashes == NULL) | |
927 | { | |
928 | bfd_set_error (bfd_error_no_memory); | |
929 | goto error_return; | |
930 | } | |
931 | ||
932 | if (o->reloc_count > max_output_reloc_count) | |
933 | max_output_reloc_count = o->reloc_count; | |
934 | } | |
935 | ||
936 | /* Reset the reloc and lineno counts, so that we can use them to | |
937 | count the number of entries we have output so far. */ | |
938 | o->reloc_count = 0; | |
939 | o->lineno_count = 0; | |
940 | } | |
941 | ||
942 | obj_sym_filepos (abfd) = line_filepos; | |
943 | ||
944 | /* Figure out the largest number of symbols in an input BFD. Take | |
945 | the opportunity to clear the output_has_begun fields of all the | |
946 | input BFD's. */ | |
947 | max_sym_count = 0; | |
948 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
949 | { | |
950 | size_t sz; | |
951 | ||
952 | sub->output_has_begun = false; | |
953 | sz = obj_raw_syment_count (sub); | |
954 | if (sz > max_sym_count) | |
955 | max_sym_count = sz; | |
956 | } | |
957 | ||
958 | /* Allocate some buffers used while linking. */ | |
959 | finfo.internal_syms = ((struct internal_syment *) | |
960 | malloc (max_sym_count | |
961 | * sizeof (struct internal_syment))); | |
962 | finfo.sec_ptrs = (asection **) malloc (max_sym_count * sizeof (asection *)); | |
963 | finfo.sym_indices = (long *) malloc (max_sym_count * sizeof (long)); | |
964 | finfo.outsyms = (bfd_byte *) malloc ((max_sym_count + 1) * symesz); | |
965 | finfo.linenos = (bfd_byte *) malloc (max_lineno_count | |
966 | * bfd_coff_linesz (abfd)); | |
967 | finfo.contents = (bfd_byte *) malloc (max_contents_size); | |
968 | finfo.external_relocs = (bfd_byte *) malloc (max_reloc_count * relsz); | |
969 | if (! info->relocateable) | |
970 | finfo.internal_relocs = ((struct internal_reloc *) | |
971 | malloc (max_reloc_count | |
972 | * sizeof (struct internal_reloc))); | |
973 | if ((finfo.internal_syms == NULL && max_sym_count > 0) | |
974 | || (finfo.sec_ptrs == NULL && max_sym_count > 0) | |
975 | || (finfo.sym_indices == NULL && max_sym_count > 0) | |
976 | || finfo.outsyms == NULL | |
977 | || (finfo.linenos == NULL && max_lineno_count > 0) | |
978 | || (finfo.contents == NULL && max_contents_size > 0) | |
979 | || (finfo.external_relocs == NULL && max_reloc_count > 0) | |
980 | || (! info->relocateable | |
981 | && finfo.internal_relocs == NULL | |
982 | && max_reloc_count > 0)) | |
983 | { | |
984 | bfd_set_error (bfd_error_no_memory); | |
985 | goto error_return; | |
986 | } | |
987 | ||
988 | /* We now know the position of everything in the file, except that | |
989 | we don't know the size of the symbol table and therefore we don't | |
990 | know where the string table starts. We just build the string | |
991 | table in memory as we go along. We process all the relocations | |
992 | for a single input file at once. */ | |
993 | obj_raw_syment_count (abfd) = 0; | |
994 | for (o = abfd->sections; o != NULL; o = o->next) | |
995 | { | |
996 | for (p = o->link_order_head; p != NULL; p = p->next) | |
997 | { | |
998 | if (p->type == bfd_indirect_link_order | |
999 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
1000 | == bfd_target_coff_flavour)) | |
1001 | { | |
1002 | sub = p->u.indirect.section->owner; | |
1003 | if (! sub->output_has_begun) | |
1004 | { | |
1005 | if (! coff_link_input_bfd (&finfo, sub)) | |
1006 | goto error_return; | |
1007 | sub->output_has_begun = true; | |
1008 | } | |
1009 | } | |
1010 | else if (p->type == bfd_section_reloc_link_order | |
1011 | || p->type == bfd_symbol_reloc_link_order) | |
1012 | { | |
1013 | if (! coff_reloc_link_order (abfd, &finfo, o, p)) | |
1014 | goto error_return; | |
1015 | } | |
1016 | else | |
1017 | { | |
1018 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
1019 | goto error_return; | |
1020 | } | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | /* Free up the buffers used by coff_link_input_bfd. */ | |
1025 | if (finfo.internal_syms != NULL) | |
1026 | { | |
1027 | free (finfo.internal_syms); | |
1028 | finfo.internal_syms = NULL; | |
1029 | } | |
1030 | if (finfo.sec_ptrs != NULL) | |
1031 | { | |
1032 | free (finfo.sec_ptrs); | |
1033 | finfo.sec_ptrs = NULL; | |
1034 | } | |
1035 | if (finfo.sym_indices != NULL) | |
1036 | { | |
1037 | free (finfo.sym_indices); | |
1038 | finfo.sym_indices = NULL; | |
1039 | } | |
1040 | if (finfo.linenos != NULL) | |
1041 | { | |
1042 | free (finfo.linenos); | |
1043 | finfo.linenos = NULL; | |
1044 | } | |
1045 | if (finfo.contents != NULL) | |
1046 | { | |
1047 | free (finfo.contents); | |
1048 | finfo.contents = NULL; | |
1049 | } | |
1050 | if (finfo.external_relocs != NULL) | |
1051 | { | |
1052 | free (finfo.external_relocs); | |
1053 | finfo.external_relocs = NULL; | |
1054 | } | |
1055 | if (finfo.internal_relocs != NULL) | |
1056 | { | |
1057 | free (finfo.internal_relocs); | |
1058 | finfo.internal_relocs = NULL; | |
1059 | } | |
1060 | ||
1061 | /* The value of the last C_FILE symbol is supposed to be the symbol | |
1062 | index of the first external symbol. Write it out again if | |
1063 | necessary. */ | |
1064 | if (finfo.last_file_index != -1 | |
1065 | && finfo.last_file.n_value != obj_raw_syment_count (abfd)) | |
1066 | { | |
1067 | finfo.last_file.n_value = obj_raw_syment_count (abfd); | |
1068 | bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file, | |
1069 | (PTR) finfo.outsyms); | |
1070 | if (bfd_seek (abfd, | |
1071 | (obj_sym_filepos (abfd) | |
1072 | + finfo.last_file_index * symesz), | |
1073 | SEEK_SET) != 0 | |
1074 | || bfd_write (finfo.outsyms, symesz, 1, abfd) != symesz) | |
1075 | return false; | |
1076 | } | |
1077 | ||
1078 | /* Write out the global symbols. */ | |
1079 | finfo.failed = false; | |
1080 | coff_link_hash_traverse (coff_hash_table (info), coff_write_global_sym, | |
1081 | (PTR) &finfo); | |
1082 | if (finfo.failed) | |
1083 | goto error_return; | |
1084 | ||
1085 | /* The outsyms buffer is used by coff_write_global_sym. */ | |
1086 | if (finfo.outsyms != NULL) | |
1087 | { | |
1088 | free (finfo.outsyms); | |
1089 | finfo.outsyms = NULL; | |
1090 | } | |
1091 | ||
1092 | if (info->relocateable) | |
1093 | { | |
1094 | /* Now that we have written out all the global symbols, we know | |
1095 | the symbol indices to use for relocs against them, and we can | |
1096 | finally write out the relocs. */ | |
1097 | external_relocs = (bfd_byte *) malloc (max_output_reloc_count * relsz); | |
1098 | if (external_relocs == NULL) | |
1099 | { | |
1100 | bfd_set_error (bfd_error_no_memory); | |
1101 | goto error_return; | |
1102 | } | |
1103 | ||
1104 | for (o = abfd->sections; o != NULL; o = o->next) | |
1105 | { | |
1106 | struct internal_reloc *irel; | |
1107 | struct internal_reloc *irelend; | |
1108 | struct coff_link_hash_entry **rel_hash; | |
1109 | bfd_byte *erel; | |
1110 | ||
1111 | if (o->reloc_count == 0) | |
1112 | continue; | |
1113 | ||
1114 | irel = finfo.section_info[o->target_index].relocs; | |
1115 | irelend = irel + o->reloc_count; | |
1116 | rel_hash = finfo.section_info[o->target_index].rel_hashes; | |
1117 | erel = external_relocs; | |
1118 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) | |
1119 | { | |
1120 | if (*rel_hash != NULL) | |
1121 | { | |
1122 | BFD_ASSERT ((*rel_hash)->indx >= 0); | |
1123 | irel->r_symndx = (*rel_hash)->indx; | |
1124 | } | |
1125 | bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel); | |
1126 | } | |
1127 | ||
1128 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 | |
1129 | || bfd_write ((PTR) external_relocs, relsz, o->reloc_count, | |
1130 | abfd) != relsz * o->reloc_count) | |
1131 | goto error_return; | |
1132 | } | |
1133 | ||
1134 | free (external_relocs); | |
1135 | external_relocs = NULL; | |
1136 | } | |
1137 | ||
1138 | /* Free up the section information. */ | |
1139 | if (finfo.section_info != NULL) | |
1140 | { | |
1141 | unsigned int i; | |
1142 | ||
1143 | for (i = 0; i < abfd->section_count; i++) | |
1144 | { | |
1145 | if (finfo.section_info[i].relocs != NULL) | |
1146 | free (finfo.section_info[i].relocs); | |
1147 | if (finfo.section_info[i].rel_hashes != NULL) | |
1148 | free (finfo.section_info[i].rel_hashes); | |
1149 | } | |
1150 | free (finfo.section_info); | |
1151 | finfo.section_info = NULL; | |
1152 | } | |
1153 | ||
1154 | /* Write out the string table. */ | |
1155 | if (bfd_seek (abfd, | |
1156 | (obj_sym_filepos (abfd) | |
1157 | + obj_raw_syment_count (abfd) * symesz), | |
1158 | SEEK_SET) != 0) | |
1159 | return false; | |
1160 | ||
1161 | #if STRING_SIZE_SIZE == 4 | |
1162 | bfd_h_put_32 (abfd, | |
1163 | _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE, | |
d25079a0 | 1164 | (bfd_byte *) strbuf); |
69645d10 ILT |
1165 | #else |
1166 | #error Change bfd_h_put_32 | |
1167 | #endif | |
1168 | ||
1169 | if (bfd_write (strbuf, 1, STRING_SIZE_SIZE, abfd) != STRING_SIZE_SIZE) | |
1170 | return false; | |
1171 | ||
1172 | if (! _bfd_stringtab_emit (abfd, finfo.strtab)) | |
1173 | return false; | |
1174 | ||
1175 | _bfd_stringtab_free (finfo.strtab); | |
1176 | ||
1177 | /* Setting bfd_get_symcount to 0 will cause write_object_contents to | |
1178 | not try to write out the symbols. */ | |
1179 | bfd_get_symcount (abfd) = 0; | |
1180 | ||
1181 | return true; | |
1182 | ||
1183 | error_return: | |
1184 | if (finfo.strtab != NULL) | |
1185 | _bfd_stringtab_free (finfo.strtab); | |
1186 | if (finfo.section_info != NULL) | |
1187 | { | |
1188 | unsigned int i; | |
1189 | ||
1190 | for (i = 0; i < abfd->section_count; i++) | |
1191 | { | |
1192 | if (finfo.section_info[i].relocs != NULL) | |
1193 | free (finfo.section_info[i].relocs); | |
1194 | if (finfo.section_info[i].rel_hashes != NULL) | |
1195 | free (finfo.section_info[i].rel_hashes); | |
1196 | } | |
1197 | free (finfo.section_info); | |
1198 | } | |
1199 | if (finfo.internal_syms != NULL) | |
1200 | free (finfo.internal_syms); | |
1201 | if (finfo.sec_ptrs != NULL) | |
1202 | free (finfo.sec_ptrs); | |
1203 | if (finfo.sym_indices != NULL) | |
1204 | free (finfo.sym_indices); | |
1205 | if (finfo.outsyms != NULL) | |
1206 | free (finfo.outsyms); | |
1207 | if (finfo.linenos != NULL) | |
1208 | free (finfo.linenos); | |
1209 | if (finfo.contents != NULL) | |
1210 | free (finfo.contents); | |
1211 | if (finfo.external_relocs != NULL) | |
1212 | free (finfo.external_relocs); | |
1213 | if (finfo.internal_relocs != NULL) | |
1214 | free (finfo.internal_relocs); | |
1215 | if (external_relocs != NULL) | |
1216 | free (external_relocs); | |
1217 | return false; | |
1218 | } | |
1219 | ||
1220 | /* Link an input file into the linker output file. This function | |
1221 | handles all the sections and relocations of the input file at once. */ | |
1222 | ||
1223 | static boolean | |
1224 | coff_link_input_bfd (finfo, input_bfd) | |
1225 | struct coff_final_link_info *finfo; | |
1226 | bfd *input_bfd; | |
1227 | { | |
1228 | boolean (*sym_is_global) PARAMS ((bfd *, struct internal_syment *)); | |
d25079a0 SC |
1229 | boolean (*adjust_symndx) PARAMS ((bfd *, struct bfd_link_info *, bfd *, |
1230 | asection *, struct internal_reloc *, | |
1231 | boolean *)); | |
69645d10 ILT |
1232 | bfd *output_bfd; |
1233 | const char *strings; | |
1234 | bfd_size_type syment_base; | |
1235 | unsigned int n_tmask; | |
1236 | unsigned int n_btshft; | |
1237 | boolean copy, hash; | |
1238 | bfd_size_type isymesz; | |
1239 | bfd_size_type osymesz; | |
1240 | bfd_size_type linesz; | |
1241 | bfd_byte *esym; | |
1242 | bfd_byte *esym_end; | |
1243 | struct internal_syment *isymp; | |
1244 | asection **secpp; | |
1245 | long *indexp; | |
1246 | long output_index; | |
1247 | bfd_byte *outsym; | |
1248 | struct coff_link_hash_entry **sym_hash; | |
1249 | bfd_size_type relsz; | |
1250 | asection *o; | |
1251 | ||
1252 | /* Move all the symbols to the output file. */ | |
1253 | ||
1254 | output_bfd = finfo->output_bfd; | |
1255 | sym_is_global = coff_backend_info (input_bfd)->_bfd_coff_sym_is_global; | |
1256 | strings = NULL; | |
1257 | syment_base = obj_raw_syment_count (output_bfd); | |
1258 | isymesz = bfd_coff_symesz (input_bfd); | |
1259 | osymesz = bfd_coff_symesz (output_bfd); | |
1260 | linesz = bfd_coff_linesz (input_bfd); | |
1261 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
1262 | ||
1263 | n_tmask = coff_data (input_bfd)->local_n_tmask; | |
1264 | n_btshft = coff_data (input_bfd)->local_n_btshft; | |
1265 | ||
1266 | /* Define macros so that ISFCN, et. al., macros work correctly. */ | |
1267 | #define N_TMASK n_tmask | |
1268 | #define N_BTSHFT n_btshft | |
1269 | ||
1270 | copy = false; | |
1271 | if (! finfo->info->keep_memory) | |
1272 | copy = true; | |
1273 | hash = true; | |
1274 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
1275 | hash = false; | |
1276 | ||
1277 | if (! coff_link_get_symbols (input_bfd)) | |
1278 | return false; | |
1279 | ||
1280 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1281 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1282 | isymp = finfo->internal_syms; | |
1283 | secpp = finfo->sec_ptrs; | |
1284 | indexp = finfo->sym_indices; | |
1285 | output_index = syment_base; | |
1286 | outsym = finfo->outsyms; | |
d25079a0 SC |
1287 | |
1288 | if (obj_pe (output_bfd)) | |
1289 | { | |
1290 | if (!process_embedded_commands (input_bfd)) | |
1291 | return false; | |
1292 | } | |
1293 | ||
69645d10 ILT |
1294 | while (esym < esym_end) |
1295 | { | |
1296 | struct internal_syment isym; | |
1297 | boolean skip; | |
1298 | boolean global; | |
1299 | int add; | |
1300 | ||
1301 | bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp); | |
1302 | ||
1303 | /* Make a copy of *isymp so that the relocate_section function | |
1304 | always sees the original values. This is more reliable than | |
1305 | always recomputing the symbol value even if we are stripping | |
1306 | the symbol. */ | |
1307 | isym = *isymp; | |
1308 | ||
2a895595 ILT |
1309 | if (isym.n_scnum != 0) |
1310 | *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum); | |
1311 | else | |
1312 | { | |
1313 | if (isym.n_value == 0) | |
1314 | *secpp = bfd_und_section_ptr; | |
1315 | else | |
1316 | *secpp = bfd_com_section_ptr; | |
1317 | } | |
1318 | ||
69645d10 ILT |
1319 | *indexp = -1; |
1320 | ||
1321 | skip = false; | |
1322 | global = false; | |
1323 | add = 1 + isym.n_numaux; | |
1324 | ||
1325 | /* If we are stripping all symbols, we want to skip this one. */ | |
1326 | if (finfo->info->strip == strip_all) | |
1327 | skip = true; | |
1328 | ||
1329 | if (! skip) | |
1330 | { | |
1331 | if (isym.n_sclass == C_EXT | |
1332 | || (sym_is_global && (*sym_is_global) (input_bfd, &isym))) | |
1333 | { | |
1334 | /* This is a global symbol. Global symbols come at the | |
1335 | end of the symbol table, so skip them for now. | |
1336 | Function symbols, however, are an exception, and are | |
1337 | not moved to the end. */ | |
1338 | global = true; | |
1339 | if (! ISFCN (isym.n_type)) | |
1340 | skip = true; | |
1341 | } | |
1342 | else | |
1343 | { | |
1344 | /* This is a local symbol. Skip it if we are discarding | |
1345 | local symbols. */ | |
1346 | if (finfo->info->discard == discard_all) | |
1347 | skip = true; | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | /* If we stripping debugging symbols, and this is a debugging | |
1352 | symbol, then skip it. */ | |
1353 | if (! skip | |
1354 | && finfo->info->strip == strip_debugger | |
1355 | && isym.n_scnum == N_DEBUG) | |
1356 | skip = true; | |
1357 | ||
1358 | /* If some symbols are stripped based on the name, work out the | |
1359 | name and decide whether to skip this symbol. */ | |
1360 | if (! skip | |
1361 | && (finfo->info->strip == strip_some | |
1362 | || finfo->info->discard == discard_l)) | |
1363 | { | |
1364 | const char *name; | |
1365 | char buf[SYMNMLEN + 1]; | |
1366 | ||
1367 | if (isym._n._n_n._n_zeroes == 0 | |
1368 | && isym._n._n_n._n_offset != 0) | |
1369 | { | |
1370 | if (strings == NULL) | |
1371 | { | |
1372 | strings = coff_read_string_table (input_bfd); | |
1373 | if (strings == NULL) | |
1374 | return false; | |
1375 | } | |
1376 | name = strings + isym._n._n_n._n_offset; | |
1377 | } | |
1378 | else | |
1379 | { | |
1380 | memcpy (buf, isym._n._n_name, SYMNMLEN); | |
1381 | buf[SYMNMLEN] = '\0'; | |
1382 | name = buf; | |
1383 | } | |
1384 | ||
1385 | if ((finfo->info->strip == strip_some | |
1386 | && (bfd_hash_lookup (finfo->info->keep_hash, name, false, | |
1387 | false) == NULL)) | |
1388 | || (! global | |
1389 | && finfo->info->discard == discard_l | |
1390 | && strncmp (name, finfo->info->lprefix, | |
1391 | finfo->info->lprefix_len) == 0)) | |
1392 | skip = true; | |
1393 | } | |
1394 | ||
1395 | /* We now know whether we are to skip this symbol or not. */ | |
1396 | if (! skip) | |
1397 | { | |
1398 | /* Adjust the symbol in order to output it. */ | |
1399 | ||
1400 | if (isym._n._n_n._n_zeroes == 0 | |
1401 | && isym._n._n_n._n_offset != 0) | |
1402 | { | |
1403 | const char *name; | |
1404 | bfd_size_type indx; | |
1405 | ||
1406 | /* This symbol has a long name. Enter it in the string | |
1407 | table we are building. Note that we do not check | |
1408 | bfd_coff_symname_in_debug. That is only true for | |
1409 | XCOFF, and XCOFF requires different linking code | |
1410 | anyhow. */ | |
1411 | BFD_ASSERT (isym._n._n_n._n_offset >= STRING_SIZE_SIZE); | |
1412 | if (strings == NULL) | |
1413 | { | |
1414 | strings = coff_read_string_table (input_bfd); | |
1415 | if (strings == NULL) | |
1416 | return false; | |
1417 | } | |
1418 | name = strings + isym._n._n_n._n_offset; | |
1419 | indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); | |
1420 | if (indx == (bfd_size_type) -1) | |
1421 | return false; | |
1422 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
1423 | } | |
1424 | ||
1425 | if (isym.n_scnum > 0) | |
1426 | { | |
1427 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1428 | isym.n_value += ((*secpp)->output_section->vma | |
1429 | + (*secpp)->output_offset | |
1430 | - (*secpp)->vma); | |
1431 | } | |
1432 | ||
1433 | /* The value of a C_FILE symbol is the symbol index of the | |
1434 | next C_FILE symbol. The value of the last C_FILE symbol | |
1435 | is the symbol index to the first external symbol | |
1436 | (actually, coff_renumber_symbols does not get this | |
1437 | right--it just sets the value of the last C_FILE symbol | |
1438 | to zero--and nobody has ever complained about it). We | |
1439 | try to get this right, below, just before we write the | |
1440 | symbols out, but in the general case we may have to write | |
1441 | the symbol out twice. */ | |
1442 | if (isym.n_sclass == C_FILE) | |
1443 | { | |
1444 | if (finfo->last_file_index != -1 | |
1445 | && finfo->last_file.n_value != output_index) | |
1446 | { | |
1447 | /* We must correct the value of the last C_FILE entry. */ | |
1448 | finfo->last_file.n_value = output_index; | |
1449 | if (finfo->last_file_index >= syment_base) | |
1450 | { | |
1451 | /* The last C_FILE symbol is in this input file. */ | |
1452 | bfd_coff_swap_sym_out (output_bfd, | |
1453 | (PTR) &finfo->last_file, | |
1454 | (PTR) (finfo->outsyms | |
1455 | + ((finfo->last_file_index | |
1456 | - syment_base) | |
1457 | * osymesz))); | |
1458 | } | |
1459 | else | |
1460 | { | |
1461 | /* We have already written out the last C_FILE | |
1462 | symbol. We need to write it out again. We | |
1463 | borrow *outsym temporarily. */ | |
1464 | bfd_coff_swap_sym_out (output_bfd, | |
1465 | (PTR) &finfo->last_file, | |
1466 | (PTR) outsym); | |
1467 | if (bfd_seek (output_bfd, | |
1468 | (obj_sym_filepos (output_bfd) | |
1469 | + finfo->last_file_index * osymesz), | |
1470 | SEEK_SET) != 0 | |
1471 | || (bfd_write (outsym, osymesz, 1, output_bfd) | |
1472 | != osymesz)) | |
1473 | return false; | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | finfo->last_file_index = output_index; | |
1478 | finfo->last_file = isym; | |
1479 | } | |
1480 | ||
1481 | /* Output the symbol. */ | |
1482 | ||
1483 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); | |
1484 | ||
1485 | *indexp = output_index; | |
1486 | ||
1487 | if (global) | |
1488 | { | |
1489 | long indx; | |
1490 | struct coff_link_hash_entry *h; | |
1491 | ||
1492 | indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1493 | / isymesz); | |
1494 | h = obj_coff_sym_hashes (input_bfd)[indx]; | |
1495 | BFD_ASSERT (h != NULL); | |
1496 | h->indx = output_index; | |
1497 | } | |
1498 | ||
1499 | output_index += add; | |
1500 | outsym += add * osymesz; | |
1501 | } | |
1502 | ||
1503 | esym += add * isymesz; | |
1504 | isymp += add; | |
1505 | ++secpp; | |
1506 | ++indexp; | |
1507 | for (--add; add > 0; --add) | |
1508 | { | |
1509 | *secpp++ = NULL; | |
1510 | *indexp++ = -1; | |
1511 | } | |
1512 | } | |
1513 | ||
1514 | /* Fix up the aux entries. This must be done in a separate pass, | |
1515 | because we don't know the correct symbol indices until we have | |
1516 | already decided which symbols we are going to keep. */ | |
1517 | ||
1518 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1519 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1520 | isymp = finfo->internal_syms; | |
1521 | indexp = finfo->sym_indices; | |
1522 | sym_hash = obj_coff_sym_hashes (input_bfd); | |
1523 | outsym = finfo->outsyms; | |
1524 | while (esym < esym_end) | |
1525 | { | |
1526 | int add; | |
1527 | ||
1528 | add = 1 + isymp->n_numaux; | |
1529 | ||
1530 | if (*indexp < 0 | |
1531 | && (*sym_hash == NULL | |
1532 | || (*sym_hash)->auxbfd != input_bfd)) | |
1533 | esym += add * isymesz; | |
1534 | else | |
1535 | { | |
1536 | struct coff_link_hash_entry *h; | |
1537 | int i; | |
1538 | ||
1539 | h = NULL; | |
1540 | if (*indexp < 0) | |
1541 | { | |
1542 | h = *sym_hash; | |
1543 | BFD_ASSERT (h->numaux == isymp->n_numaux); | |
1544 | } | |
1545 | ||
1546 | esym += isymesz; | |
1547 | ||
1548 | if (h == NULL) | |
1549 | outsym += osymesz; | |
1550 | ||
1551 | /* Handle the aux entries. This handling is based on | |
1552 | coff_pointerize_aux. I don't know if it always correct. */ | |
1553 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) | |
1554 | { | |
1555 | union internal_auxent aux; | |
1556 | union internal_auxent *auxp; | |
1557 | ||
1558 | if (h != NULL) | |
1559 | auxp = h->aux + i; | |
1560 | else | |
1561 | { | |
1562 | bfd_coff_swap_aux_in (input_bfd, (PTR) esym, isymp->n_type, | |
1563 | isymp->n_sclass, i, isymp->n_numaux, | |
1564 | (PTR) &aux); | |
1565 | auxp = &aux; | |
1566 | } | |
1567 | ||
1568 | if (isymp->n_sclass == C_FILE) | |
1569 | { | |
1570 | /* If this is a long filename, we must put it in the | |
1571 | string table. */ | |
d25079a0 SC |
1572 | if (auxp->x_file.x_n.x_zeroes == 0 |
1573 | && auxp->x_file.x_n.x_offset != 0) | |
69645d10 ILT |
1574 | { |
1575 | const char *filename; | |
1576 | bfd_size_type indx; | |
1577 | ||
1578 | BFD_ASSERT (auxp->x_file.x_n.x_offset | |
1579 | >= STRING_SIZE_SIZE); | |
1580 | if (strings == NULL) | |
1581 | { | |
1582 | strings = coff_read_string_table (input_bfd); | |
1583 | if (strings == NULL) | |
1584 | return false; | |
1585 | } | |
1586 | filename = strings + auxp->x_file.x_n.x_offset; | |
1587 | indx = _bfd_stringtab_add (finfo->strtab, filename, | |
1588 | hash, copy); | |
1589 | if (indx == (bfd_size_type) -1) | |
1590 | return false; | |
1591 | auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; | |
1592 | } | |
1593 | } | |
1594 | else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) | |
1595 | { | |
1596 | long indx; | |
1597 | ||
1598 | if (ISFCN (isymp->n_type) | |
1599 | || ISTAG (isymp->n_sclass) | |
1600 | || isymp->n_sclass == C_BLOCK) | |
1601 | { | |
1602 | indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l; | |
1603 | if (indx > 0 | |
1604 | && indx < obj_raw_syment_count (input_bfd)) | |
1605 | { | |
1606 | /* We look forward through the symbol for | |
1607 | the index of the next symbol we are going | |
1608 | to include. I don't know if this is | |
1609 | entirely right. */ | |
1610 | while (finfo->sym_indices[indx] < 0 | |
1611 | && indx < obj_raw_syment_count (input_bfd)) | |
1612 | ++indx; | |
1613 | if (indx >= obj_raw_syment_count (input_bfd)) | |
1614 | indx = output_index; | |
1615 | else | |
1616 | indx = finfo->sym_indices[indx]; | |
1617 | auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx; | |
1618 | } | |
1619 | } | |
1620 | ||
1621 | indx = auxp->x_sym.x_tagndx.l; | |
1622 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) | |
1623 | { | |
1624 | indx = finfo->sym_indices[indx]; | |
1625 | if (indx < 0) | |
1626 | auxp->x_sym.x_tagndx.l = 0; | |
1627 | else | |
1628 | auxp->x_sym.x_tagndx.l = indx; | |
1629 | } | |
1630 | } | |
1631 | ||
1632 | if (h == NULL) | |
1633 | { | |
1634 | bfd_coff_swap_aux_out (output_bfd, (PTR) auxp, isymp->n_type, | |
1635 | isymp->n_sclass, i, isymp->n_numaux, | |
1636 | (PTR) outsym); | |
1637 | outsym += osymesz; | |
1638 | } | |
1639 | ||
1640 | esym += isymesz; | |
1641 | } | |
1642 | } | |
1643 | ||
1644 | indexp += add; | |
1645 | isymp += add; | |
1646 | sym_hash += add; | |
1647 | } | |
1648 | ||
1649 | /* Relocate the line numbers, unless we are stripping them. */ | |
1650 | if (finfo->info->strip == strip_none | |
1651 | || finfo->info->strip == strip_some) | |
1652 | { | |
1653 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
1654 | { | |
1655 | bfd_vma offset; | |
1656 | bfd_byte *eline; | |
1657 | bfd_byte *elineend; | |
1658 | ||
1659 | if (o->lineno_count == 0) | |
1660 | continue; | |
1661 | ||
1662 | if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0 | |
1663 | || bfd_read (finfo->linenos, linesz, o->lineno_count, | |
1664 | input_bfd) != linesz * o->lineno_count) | |
1665 | return false; | |
1666 | ||
1667 | offset = o->output_section->vma + o->output_offset - o->vma; | |
1668 | eline = finfo->linenos; | |
1669 | elineend = eline + linesz * o->lineno_count; | |
1670 | for (; eline < elineend; eline += linesz) | |
1671 | { | |
1672 | struct internal_lineno iline; | |
1673 | ||
1674 | bfd_coff_swap_lineno_in (input_bfd, (PTR) eline, (PTR) &iline); | |
1675 | ||
1676 | if (iline.l_lnno != 0) | |
1677 | iline.l_addr.l_paddr += offset; | |
1678 | else if (iline.l_addr.l_symndx >= 0 | |
1679 | && (iline.l_addr.l_symndx | |
1680 | < obj_raw_syment_count (input_bfd))) | |
1681 | { | |
1682 | long indx; | |
1683 | ||
1684 | indx = finfo->sym_indices[iline.l_addr.l_symndx]; | |
1685 | ||
1686 | if (indx < 0) | |
1687 | { | |
1688 | /* These line numbers are attached to a symbol | |
1689 | which we are stripping. We should really | |
1690 | just discard the line numbers, but that would | |
1691 | be a pain because we have already counted | |
1692 | them. */ | |
1693 | indx = 0; | |
1694 | } | |
1695 | else | |
1696 | { | |
1697 | struct internal_syment is; | |
1698 | union internal_auxent ia; | |
1699 | ||
1700 | /* Fix up the lnnoptr field in the aux entry of | |
1701 | the symbol. It turns out that we can't do | |
1702 | this when we modify the symbol aux entries, | |
1703 | because gas sometimes screws up the lnnoptr | |
1704 | field and makes it an offset from the start | |
1705 | of the line numbers rather than an absolute | |
1706 | file index. */ | |
1707 | bfd_coff_swap_sym_in (output_bfd, | |
1708 | (PTR) (finfo->outsyms | |
1709 | + ((indx - syment_base) | |
1710 | * osymesz)), | |
1711 | (PTR) &is); | |
1712 | if ((ISFCN (is.n_type) | |
1713 | || is.n_sclass == C_BLOCK) | |
1714 | && is.n_numaux >= 1) | |
1715 | { | |
1716 | PTR auxptr; | |
1717 | ||
1718 | auxptr = (PTR) (finfo->outsyms | |
1719 | + ((indx - syment_base + 1) | |
1720 | * osymesz)); | |
1721 | bfd_coff_swap_aux_in (output_bfd, auxptr, | |
1722 | is.n_type, is.n_sclass, | |
1723 | 0, is.n_numaux, (PTR) &ia); | |
1724 | ia.x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
1725 | (o->output_section->line_filepos | |
1726 | + o->output_section->lineno_count * linesz | |
1727 | + eline - finfo->linenos); | |
1728 | bfd_coff_swap_aux_out (output_bfd, (PTR) &ia, | |
1729 | is.n_type, is.n_sclass, 0, | |
1730 | is.n_numaux, auxptr); | |
1731 | } | |
1732 | } | |
1733 | ||
1734 | iline.l_addr.l_symndx = indx; | |
1735 | } | |
1736 | ||
1737 | bfd_coff_swap_lineno_out (output_bfd, (PTR) &iline, (PTR) eline); | |
1738 | } | |
1739 | ||
1740 | if (bfd_seek (output_bfd, | |
1741 | (o->output_section->line_filepos | |
1742 | + o->output_section->lineno_count * linesz), | |
1743 | SEEK_SET) != 0 | |
1744 | || bfd_write (finfo->linenos, linesz, o->lineno_count, | |
1745 | output_bfd) != linesz * o->lineno_count) | |
1746 | return false; | |
1747 | ||
1748 | o->output_section->lineno_count += o->lineno_count; | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE | |
1753 | symbol will be the first symbol in the next input file. In the | |
1754 | normal case, this will save us from writing out the C_FILE symbol | |
1755 | again. */ | |
d25079a0 SC |
1756 | if (finfo->last_file_index != -1 |
1757 | && finfo->last_file_index >= syment_base) | |
69645d10 ILT |
1758 | { |
1759 | finfo->last_file.n_value = output_index; | |
1760 | bfd_coff_swap_sym_out (output_bfd, (PTR) &finfo->last_file, | |
1761 | (PTR) (finfo->outsyms | |
d25079a0 SC |
1762 | + ((finfo->last_file_index - syment_base) |
1763 | * osymesz))); | |
69645d10 ILT |
1764 | } |
1765 | ||
1766 | /* Write the modified symbols to the output file. */ | |
1767 | if (outsym > finfo->outsyms) | |
1768 | { | |
1769 | if (bfd_seek (output_bfd, | |
1770 | obj_sym_filepos (output_bfd) + syment_base * osymesz, | |
1771 | SEEK_SET) != 0 | |
1772 | || bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1, | |
1773 | output_bfd) != outsym - finfo->outsyms) | |
1774 | return false; | |
1775 | ||
1776 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) | |
1777 | + (outsym - finfo->outsyms) / osymesz) | |
1778 | == output_index); | |
1779 | ||
1780 | obj_raw_syment_count (output_bfd) = output_index; | |
1781 | } | |
1782 | ||
1783 | /* Relocate the contents of each section. */ | |
1784 | relsz = bfd_coff_relsz (input_bfd); | |
d25079a0 | 1785 | adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx; |
69645d10 ILT |
1786 | for (o = input_bfd->sections; o != NULL; o = o->next) |
1787 | { | |
1788 | if ((o->flags & SEC_HAS_CONTENTS) == 0) | |
1789 | continue; | |
1790 | ||
1791 | if (! bfd_get_section_contents (input_bfd, o, finfo->contents, | |
1792 | (file_ptr) 0, o->_raw_size)) | |
d25079a0 | 1793 | return false; |
69645d10 ILT |
1794 | |
1795 | if ((o->flags & SEC_RELOC) != 0) | |
1796 | { | |
1797 | int target_index; | |
1798 | struct internal_reloc *internal_relocs; | |
1799 | bfd_byte *erel; | |
1800 | bfd_byte *erel_end; | |
1801 | struct internal_reloc *irel; | |
1802 | ||
1803 | /* Read in the relocs. */ | |
1804 | if (bfd_seek (input_bfd, o->rel_filepos, SEEK_SET) != 0 | |
1805 | || (bfd_read (finfo->external_relocs, relsz, o->reloc_count, | |
1806 | input_bfd) != relsz * o->reloc_count)) | |
1807 | return false; | |
1808 | ||
1809 | /* If we are doing a relocateable link, we keep the swapped | |
1810 | in relocs in memory, and don't write them out until the | |
1811 | end of the link. */ | |
1812 | target_index = o->output_section->target_index; | |
1813 | if (! finfo->info->relocateable) | |
1814 | internal_relocs = finfo->internal_relocs; | |
1815 | else | |
1816 | internal_relocs = (finfo->section_info[target_index].relocs | |
1817 | + o->output_section->reloc_count); | |
1818 | ||
1819 | /* Swap in the relocs. */ | |
1820 | erel = finfo->external_relocs; | |
1821 | erel_end = erel + relsz * o->reloc_count; | |
1822 | irel = internal_relocs; | |
1823 | for (; erel < erel_end; erel += relsz, irel++) | |
1824 | bfd_coff_swap_reloc_in (input_bfd, (PTR) erel, (PTR) irel); | |
1825 | ||
1826 | /* Call processor specific code to relocate the section | |
1827 | contents. */ | |
1828 | if (! bfd_coff_relocate_section (output_bfd, finfo->info, | |
1829 | input_bfd, o, | |
1830 | finfo->contents, | |
1831 | internal_relocs, | |
1832 | finfo->internal_syms, | |
1833 | finfo->sec_ptrs)) | |
1834 | return false; | |
1835 | ||
1836 | if (finfo->info->relocateable) | |
1837 | { | |
1838 | bfd_vma offset; | |
1839 | struct internal_reloc *irelend; | |
1840 | struct coff_link_hash_entry **rel_hash; | |
1841 | ||
1842 | offset = o->output_section->vma + o->output_offset - o->vma; | |
69645d10 ILT |
1843 | irel = internal_relocs; |
1844 | irelend = irel + o->reloc_count; | |
2a895595 ILT |
1845 | rel_hash = (finfo->section_info[target_index].rel_hashes |
1846 | + o->output_section->reloc_count); | |
69645d10 ILT |
1847 | for (; irel < irelend; irel++, rel_hash++) |
1848 | { | |
1849 | struct coff_link_hash_entry *h; | |
d25079a0 | 1850 | boolean adjusted; |
69645d10 ILT |
1851 | |
1852 | *rel_hash = NULL; | |
1853 | ||
1854 | /* Adjust the reloc address and symbol index. */ | |
1855 | ||
1856 | irel->r_vaddr += offset; | |
1857 | ||
2a895595 ILT |
1858 | if (irel->r_symndx == -1) |
1859 | continue; | |
1860 | ||
d25079a0 SC |
1861 | if (adjust_symndx) |
1862 | { | |
1863 | if (! (*adjust_symndx) (output_bfd, finfo->info, | |
1864 | input_bfd, o, irel, | |
1865 | &adjusted)) | |
1866 | return false; | |
1867 | if (adjusted) | |
1868 | continue; | |
1869 | } | |
1870 | ||
69645d10 ILT |
1871 | h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx]; |
1872 | if (h != NULL) | |
1873 | { | |
1874 | /* This is a global symbol. */ | |
1875 | if (h->indx >= 0) | |
1876 | irel->r_symndx = h->indx; | |
1877 | else | |
1878 | { | |
1879 | /* This symbol is being written at the end | |
1880 | of the file, and we do not yet know the | |
1881 | symbol index. We save the pointer to the | |
1882 | hash table entry in the rel_hash list. | |
1883 | We set the indx field to -2 to indicate | |
1884 | that this symbol must not be stripped. */ | |
1885 | *rel_hash = h; | |
1886 | h->indx = -2; | |
1887 | } | |
1888 | } | |
1889 | else | |
1890 | { | |
1891 | long indx; | |
1892 | ||
1893 | indx = finfo->sym_indices[irel->r_symndx]; | |
1894 | if (indx != -1) | |
1895 | irel->r_symndx = indx; | |
1896 | else | |
1897 | { | |
1898 | struct internal_syment *is; | |
1899 | const char *name; | |
1900 | char buf[SYMNMLEN + 1]; | |
1901 | ||
1902 | /* This reloc is against a symbol we are | |
1903 | stripping. It would be possible to | |
1904 | handle this case, but I don't think it's | |
1905 | worth it. */ | |
1906 | is = finfo->internal_syms + irel->r_symndx; | |
1907 | ||
1908 | if (is->_n._n_n._n_zeroes == 0 | |
1909 | && is->_n._n_n._n_offset != 0) | |
1910 | { | |
1911 | if (strings == NULL) | |
1912 | { | |
1913 | strings = coff_read_string_table (input_bfd); | |
1914 | if (strings == NULL) | |
1915 | return false; | |
1916 | } | |
1917 | name = strings + is->_n._n_n._n_offset; | |
1918 | } | |
1919 | else | |
1920 | { | |
1921 | memcpy (buf, is->_n._n_name, SYMNMLEN); | |
1922 | buf[SYMNMLEN] = '\0'; | |
1923 | name = buf; | |
1924 | } | |
1925 | ||
1926 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
1927 | (finfo->info, name, input_bfd, o, | |
1928 | irel->r_vaddr))) | |
1929 | return false; | |
1930 | } | |
1931 | } | |
1932 | } | |
1933 | ||
1934 | o->output_section->reloc_count += o->reloc_count; | |
1935 | } | |
1936 | } | |
1937 | ||
1938 | /* Write out the modified section contents. */ | |
1939 | if (! bfd_set_section_contents (output_bfd, o->output_section, | |
1940 | finfo->contents, o->output_offset, | |
1941 | (o->_cooked_size != 0 | |
1942 | ? o->_cooked_size | |
1943 | : o->_raw_size))) | |
1944 | return false; | |
1945 | } | |
1946 | ||
1947 | if (! finfo->info->keep_memory) | |
1948 | { | |
1949 | if (! coff_link_free_symbols (input_bfd)) | |
1950 | return false; | |
1951 | } | |
1952 | ||
1953 | return true; | |
1954 | } | |
1955 | ||
1956 | /* Write out a global symbol. Called via coff_link_hash_traverse. */ | |
1957 | ||
1958 | static boolean | |
1959 | coff_write_global_sym (h, data) | |
1960 | struct coff_link_hash_entry *h; | |
1961 | PTR data; | |
1962 | { | |
1963 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
1964 | bfd *output_bfd; | |
1965 | struct internal_syment isym; | |
1966 | bfd_size_type symesz; | |
1967 | unsigned int i; | |
1968 | ||
1969 | output_bfd = finfo->output_bfd; | |
1970 | ||
1971 | if (h->indx >= 0) | |
1972 | return true; | |
1973 | ||
1974 | if (h->indx != -2 | |
1975 | && (finfo->info->strip == strip_all | |
1976 | || (finfo->info->strip == strip_some | |
1977 | && (bfd_hash_lookup (finfo->info->keep_hash, | |
1978 | h->root.root.string, false, false) | |
1979 | == NULL)))) | |
1980 | return true; | |
1981 | ||
1982 | switch (h->root.type) | |
1983 | { | |
1984 | default: | |
1985 | case bfd_link_hash_new: | |
1986 | abort (); | |
1987 | return false; | |
1988 | ||
1989 | case bfd_link_hash_undefined: | |
d25079a0 | 1990 | case bfd_link_hash_undefweak: |
69645d10 ILT |
1991 | isym.n_scnum = N_UNDEF; |
1992 | isym.n_value = 0; | |
1993 | break; | |
1994 | ||
1995 | case bfd_link_hash_defined: | |
d25079a0 | 1996 | case bfd_link_hash_defweak: |
69645d10 ILT |
1997 | { |
1998 | asection *sec; | |
1999 | ||
2000 | sec = h->root.u.def.section->output_section; | |
2001 | if (bfd_is_abs_section (sec)) | |
2002 | isym.n_scnum = N_ABS; | |
2003 | else | |
2004 | isym.n_scnum = sec->target_index; | |
2005 | isym.n_value = (h->root.u.def.value | |
2006 | + sec->vma | |
2007 | + h->root.u.def.section->output_offset); | |
2008 | } | |
2009 | break; | |
2010 | ||
2011 | case bfd_link_hash_common: | |
2012 | isym.n_scnum = N_UNDEF; | |
2013 | isym.n_value = h->root.u.c.size; | |
2014 | break; | |
2015 | ||
2016 | case bfd_link_hash_indirect: | |
2017 | case bfd_link_hash_warning: | |
2018 | /* Just ignore these. They can't be handled anyhow. */ | |
2019 | return true; | |
2020 | } | |
2021 | ||
2022 | if (strlen (h->root.root.string) <= SYMNMLEN) | |
2023 | strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); | |
2024 | else | |
2025 | { | |
2026 | boolean hash; | |
2027 | bfd_size_type indx; | |
2028 | ||
2029 | hash = true; | |
2030 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
2031 | hash = false; | |
2032 | indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash, | |
2033 | false); | |
2034 | if (indx == (bfd_size_type) -1) | |
2035 | { | |
2036 | finfo->failed = true; | |
2037 | return false; | |
2038 | } | |
2039 | isym._n._n_n._n_zeroes = 0; | |
2040 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
2041 | } | |
2042 | ||
2043 | isym.n_sclass = h->class; | |
2044 | isym.n_type = h->type; | |
2045 | ||
2046 | if (isym.n_sclass == C_NULL) | |
2047 | isym.n_sclass = C_EXT; | |
2048 | ||
2049 | isym.n_numaux = h->numaux; | |
2050 | ||
2051 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) finfo->outsyms); | |
2052 | ||
2053 | symesz = bfd_coff_symesz (output_bfd); | |
2054 | ||
2055 | if (bfd_seek (output_bfd, | |
2056 | (obj_sym_filepos (output_bfd) | |
2057 | + obj_raw_syment_count (output_bfd) * symesz), | |
2058 | SEEK_SET) != 0 | |
2059 | || bfd_write (finfo->outsyms, symesz, 1, output_bfd) != symesz) | |
2060 | { | |
2061 | finfo->failed = true; | |
2062 | return false; | |
2063 | } | |
2064 | ||
2065 | h->indx = obj_raw_syment_count (output_bfd); | |
2066 | ||
2067 | ++obj_raw_syment_count (output_bfd); | |
2068 | ||
2069 | /* Write out any associated aux entries. There normally will be | |
2070 | none. If there are any, I have no idea how to modify them. */ | |
2071 | for (i = 0; i < isym.n_numaux; i++) | |
2072 | { | |
2073 | bfd_coff_swap_aux_out (output_bfd, (PTR) (h->aux + i), isym.n_type, | |
2074 | isym.n_sclass, i, isym.n_numaux, | |
2075 | (PTR) finfo->outsyms); | |
2076 | if (bfd_write (finfo->outsyms, symesz, 1, output_bfd) != symesz) | |
2077 | { | |
2078 | finfo->failed = true; | |
2079 | return false; | |
2080 | } | |
2081 | ++obj_raw_syment_count (output_bfd); | |
2082 | } | |
2083 | ||
2084 | return true; | |
2085 | } | |
2086 | ||
2087 | /* Handle a link order which is supposed to generate a reloc. */ | |
2088 | ||
2089 | static boolean | |
2090 | coff_reloc_link_order (output_bfd, finfo, output_section, link_order) | |
2091 | bfd *output_bfd; | |
2092 | struct coff_final_link_info *finfo; | |
2093 | asection *output_section; | |
2094 | struct bfd_link_order *link_order; | |
2095 | { | |
d25079a0 | 2096 | reloc_howto_type *howto; |
69645d10 ILT |
2097 | struct internal_reloc *irel; |
2098 | struct coff_link_hash_entry **rel_hash_ptr; | |
2099 | ||
2100 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); | |
2101 | if (howto == NULL) | |
2102 | { | |
2103 | bfd_set_error (bfd_error_bad_value); | |
2104 | return false; | |
2105 | } | |
2106 | ||
2107 | if (link_order->u.reloc.p->addend != 0) | |
2108 | { | |
2109 | bfd_size_type size; | |
2110 | bfd_byte *buf; | |
2111 | bfd_reloc_status_type rstat; | |
2112 | boolean ok; | |
2113 | ||
2114 | size = bfd_get_reloc_size (howto); | |
2115 | buf = (bfd_byte *) bfd_zmalloc (size); | |
2116 | if (buf == NULL) | |
2117 | { | |
2118 | bfd_set_error (bfd_error_no_memory); | |
2119 | return false; | |
2120 | } | |
2121 | ||
2122 | rstat = _bfd_relocate_contents (howto, output_bfd, | |
2123 | link_order->u.reloc.p->addend, buf); | |
2124 | switch (rstat) | |
2125 | { | |
2126 | case bfd_reloc_ok: | |
2127 | break; | |
2128 | default: | |
2129 | case bfd_reloc_outofrange: | |
2130 | abort (); | |
2131 | case bfd_reloc_overflow: | |
2132 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
2133 | (finfo->info, | |
2134 | (link_order->type == bfd_section_reloc_link_order | |
2135 | ? bfd_section_name (output_bfd, | |
2136 | link_order->u.reloc.p->u.section) | |
2137 | : link_order->u.reloc.p->u.name), | |
2138 | howto->name, link_order->u.reloc.p->addend, | |
2139 | (bfd *) NULL, (asection *) NULL, (bfd_vma) 0))) | |
2140 | { | |
2141 | free (buf); | |
2142 | return false; | |
2143 | } | |
2144 | break; | |
2145 | } | |
2146 | ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf, | |
2147 | (file_ptr) link_order->offset, size); | |
2148 | free (buf); | |
2149 | if (! ok) | |
2150 | return false; | |
2151 | } | |
2152 | ||
2153 | /* Store the reloc information in the right place. It will get | |
2154 | swapped and written out at the end of the final_link routine. */ | |
2155 | ||
2156 | irel = (finfo->section_info[output_section->target_index].relocs | |
2157 | + output_section->reloc_count); | |
2158 | rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes | |
2159 | + output_section->reloc_count); | |
2160 | ||
2161 | memset (irel, 0, sizeof (struct internal_reloc)); | |
2162 | *rel_hash_ptr = NULL; | |
2163 | ||
2164 | irel->r_vaddr = output_section->vma + link_order->offset; | |
2165 | ||
2166 | if (link_order->type == bfd_section_reloc_link_order) | |
2167 | { | |
2168 | /* We need to somehow locate a symbol in the right section. The | |
2169 | symbol must either have a value of zero, or we must adjust | |
2170 | the addend by the value of the symbol. FIXME: Write this | |
2171 | when we need it. The old linker couldn't handle this anyhow. */ | |
2172 | abort (); | |
2173 | *rel_hash_ptr = NULL; | |
2174 | irel->r_symndx = 0; | |
2175 | } | |
2176 | else | |
2177 | { | |
2178 | struct coff_link_hash_entry *h; | |
2179 | ||
2180 | h = coff_link_hash_lookup (coff_hash_table (finfo->info), | |
2181 | link_order->u.reloc.p->u.name, | |
2182 | false, false, true); | |
2183 | if (h != NULL) | |
2184 | { | |
2185 | if (h->indx >= 0) | |
2186 | irel->r_symndx = h->indx; | |
2187 | else | |
2188 | { | |
2189 | /* Set the index to -2 to force this symbol to get | |
2190 | written out. */ | |
2191 | h->indx = -2; | |
2192 | *rel_hash_ptr = h; | |
2193 | irel->r_symndx = 0; | |
2194 | } | |
2195 | } | |
2196 | else | |
2197 | { | |
2198 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2199 | (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL, | |
2200 | (asection *) NULL, (bfd_vma) 0))) | |
2201 | return false; | |
2202 | irel->r_symndx = 0; | |
2203 | } | |
2204 | } | |
2205 | ||
2206 | /* FIXME: Is this always right? */ | |
2207 | irel->r_type = howto->type; | |
2208 | ||
2209 | /* r_size is only used on the RS/6000, which needs its own linker | |
2210 | routines anyhow. r_extern is only used for ECOFF. */ | |
2211 | ||
2212 | /* FIXME: What is the right value for r_offset? Is zero OK? */ | |
2213 | ||
2214 | ++output_section->reloc_count; | |
2215 | ||
2216 | return true; | |
2217 | } | |
2a895595 ILT |
2218 | |
2219 | /* A basic reloc handling routine which may be used by processors with | |
2220 | simple relocs. */ | |
2221 | ||
2222 | boolean | |
2223 | _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd, | |
2224 | input_section, contents, relocs, syms, | |
2225 | sections) | |
2226 | bfd *output_bfd; | |
2227 | struct bfd_link_info *info; | |
2228 | bfd *input_bfd; | |
2229 | asection *input_section; | |
2230 | bfd_byte *contents; | |
2231 | struct internal_reloc *relocs; | |
2232 | struct internal_syment *syms; | |
2233 | asection **sections; | |
2234 | { | |
2235 | struct internal_reloc *rel; | |
2236 | struct internal_reloc *relend; | |
2237 | ||
d25079a0 | 2238 | |
2a895595 ILT |
2239 | rel = relocs; |
2240 | relend = rel + input_section->reloc_count; | |
2241 | for (; rel < relend; rel++) | |
2242 | { | |
2243 | long symndx; | |
2244 | struct coff_link_hash_entry *h; | |
2245 | struct internal_syment *sym; | |
2246 | bfd_vma addend; | |
2247 | bfd_vma val; | |
d25079a0 | 2248 | reloc_howto_type *howto; |
2a895595 ILT |
2249 | bfd_reloc_status_type rstat; |
2250 | ||
2251 | symndx = rel->r_symndx; | |
2252 | ||
2253 | if (symndx == -1) | |
2254 | { | |
2255 | h = NULL; | |
2256 | sym = NULL; | |
2257 | } | |
2258 | else | |
2259 | { | |
2260 | h = obj_coff_sym_hashes (input_bfd)[symndx]; | |
2261 | sym = syms + symndx; | |
2262 | } | |
2263 | ||
2264 | /* COFF treats common symbols in one of two ways. Either the | |
2265 | size of the symbol is included in the section contents, or it | |
2266 | is not. We assume that the size is not included, and force | |
2267 | the rtype_to_howto function to adjust the addend as needed. */ | |
d25079a0 | 2268 | |
2a895595 ILT |
2269 | if (sym != NULL && sym->n_scnum != 0) |
2270 | addend = - sym->n_value; | |
2271 | else | |
2272 | addend = 0; | |
2273 | ||
d25079a0 | 2274 | |
2a895595 ILT |
2275 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
2276 | sym, &addend); | |
2277 | if (howto == NULL) | |
2278 | return false; | |
2279 | ||
d25079a0 SC |
2280 | /* WINDOWS_NT; in this next section, the value of 'val' will be computed. |
2281 | With respect to the .idata and .rsrc sections, the NT_IMAGE_BASE | |
2282 | must be removed from the value that is to be relocated (NT_IMAGE_BASE | |
2283 | is currently defined in internal.h and has value 400000). Now this | |
2284 | value should only be removed from addresses being relocated in the | |
2285 | .idata and .rsrc sections, not the .text section which should have | |
2286 | the 'real' address. In addition, the .rsrc val's must also be | |
2287 | adjusted by the input_section->vma. */ | |
2288 | ||
2a895595 ILT |
2289 | val = 0; |
2290 | ||
2291 | if (h == NULL) | |
2292 | { | |
2293 | asection *sec; | |
d25079a0 | 2294 | int i; |
2a895595 ILT |
2295 | |
2296 | if (symndx == -1) | |
2297 | { | |
2298 | sec = bfd_abs_section_ptr; | |
2299 | val = 0; | |
2300 | } | |
2301 | else | |
2302 | { | |
2303 | sec = sections[symndx]; | |
d25079a0 | 2304 | val = (sec->output_section->vma |
2a895595 ILT |
2305 | + sec->output_offset |
2306 | + sym->n_value | |
2307 | - sec->vma); | |
d25079a0 SC |
2308 | if (obj_pe(output_bfd)) { |
2309 | /* Make a correction here to val if the sec is either .rsrc | |
2310 | or .idata */ | |
2311 | if (strcmp (input_section->name, ".text") != 0) | |
2312 | { | |
2313 | if (strncmp (sec->name, ".idata$", 7) == 0) | |
2314 | val -= NT_IMAGE_BASE; | |
89665c85 SC |
2315 | if (strncmp (sec->name, ".reloc", 6) == 0) |
2316 | val -= NT_IMAGE_BASE; | |
2317 | else if (strncmp (sec->name, ".edata", 5) == 0) | |
2318 | val -= NT_IMAGE_BASE; | |
d25079a0 SC |
2319 | else if (strncmp (sec->name, ".rsrc$", 6) == 0) |
2320 | { | |
2321 | val -= NT_IMAGE_BASE; | |
2322 | val += sec->vma; | |
2323 | } | |
2324 | } | |
2325 | } | |
2a895595 ILT |
2326 | } |
2327 | } | |
2328 | else | |
2329 | { | |
d25079a0 SC |
2330 | if (h->root.type == bfd_link_hash_defined |
2331 | || h->root.type == bfd_link_hash_defweak) | |
2a895595 ILT |
2332 | { |
2333 | asection *sec; | |
2334 | ||
2335 | sec = h->root.u.def.section; | |
2336 | val = (h->root.u.def.value | |
2337 | + sec->output_section->vma | |
2338 | + sec->output_offset); | |
d25079a0 SC |
2339 | if (obj_pe (output_bfd)) { |
2340 | /* Make a correction here to val if the sec is either .rsrc | |
2341 | or .idata */ | |
2342 | if (strcmp (input_section->name, ".text") != 0) | |
2343 | { | |
2344 | if (strncmp (sec->name, ".idata$", 7) == 0) | |
2345 | val -= NT_IMAGE_BASE; | |
89665c85 SC |
2346 | else if (strncmp (sec->name, ".reloc", 5) == 0) |
2347 | val -= NT_IMAGE_BASE; | |
2348 | else if (strncmp (sec->name, ".edata", 5) == 0) | |
2349 | val -= NT_IMAGE_BASE; | |
d25079a0 SC |
2350 | else if (strncmp (sec->name, ".rsrc$", 6) == 0) |
2351 | { | |
2352 | val -= NT_IMAGE_BASE; | |
2353 | val += sec->vma; | |
2354 | } | |
2355 | } | |
2356 | } | |
2a895595 ILT |
2357 | } |
2358 | else if (! info->relocateable) | |
2359 | { | |
2360 | if (! ((*info->callbacks->undefined_symbol) | |
2361 | (info, h->root.root.string, input_bfd, input_section, | |
2362 | rel->r_vaddr - input_section->vma))) | |
2363 | return false; | |
2364 | } | |
2365 | } | |
2366 | ||
d25079a0 SC |
2367 | if (obj_pe (output_bfd)) { |
2368 | ||
2369 | /* Here's where we will collect the information about the dll .idata$4 | |
2370 | and 5 entries and fix up the vals for .idata$2 information. When | |
2371 | we encounter processing for .idata$5 (this could also be done for | |
2372 | .idata$4) we will keep track of the number of entries made for a | |
2373 | particular dll. Now if we are processing .idata$2 input_section, | |
2374 | then we know how many entries have been made from each dll and we | |
2375 | have to fix up the .idata$2 start addresses for .idata$4 and | |
2376 | .idata$5. */ | |
2377 | add_to_val = 0; | |
2378 | if (strncmp (input_section->name, ".idata$5", 8) == 0) | |
2379 | { | |
2380 | if (num_DLLs == 0) /* this is the first one */ | |
2381 | { | |
2382 | num_DLLs += 1; | |
2383 | MS_DLL[num_DLLs].DLL_name = input_bfd->filename; | |
2384 | MS_DLL[num_DLLs].num_entries += 1; | |
2385 | } | |
2386 | else if (!strcmp (input_bfd->filename, MS_DLL[num_DLLs].DLL_name)) | |
2387 | { | |
2388 | /* this is just another entry */ | |
2389 | MS_DLL[num_DLLs].num_entries += 1; | |
2390 | } | |
2391 | else | |
2392 | { | |
2393 | /* This is a new DLL */ | |
2394 | num_DLLs += 1; | |
2395 | MS_DLL[num_DLLs].DLL_name = input_bfd->filename; | |
2396 | MS_DLL[num_DLLs].num_entries += 1; | |
2397 | } | |
2398 | all_entries += 1; | |
2399 | } | |
2400 | ||
2401 | else if (strncmp (input_section->name, ".idata$2", 8) == 0) | |
2402 | { | |
2403 | /* All information about the number of entries needed from each | |
2404 | DLL has been collected at this point. Now we actually want to | |
2405 | make and adjustment to the val's for .idata$4 and .idata$5 | |
2406 | which are part of the .idata$2 section. */ | |
2407 | /* first we have to get the symbol name from sym. This will be | |
2408 | either .idata$4, .idata$5 or .idata$6. A 'fixup' is computed for | |
2409 | .idata$4 and .idata$5 but not for .idata$6 (this value is handled | |
2410 | correctly already and doesn't have to be fixed) */ | |
2411 | const char *name; | |
2412 | char buf[SYMNMLEN + 1]; | |
2413 | ||
2414 | if (sym->_n._n_n._n_zeroes == 0 && sym->_n._n_n._n_offset != 0) | |
2415 | name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset; | |
2416 | else | |
2417 | { | |
2418 | strncpy (buf, sym->_n._n_name, SYMNMLEN); | |
2419 | buf[SYMNMLEN] = '\0'; | |
2420 | name = buf; | |
2421 | } | |
2422 | ||
2423 | if (num_DLLs_done) | |
2424 | { | |
2425 | /* we have done at least one. The val fixups are based on the | |
2426 | previous fixups */ | |
2427 | if (strncmp (name, ".idata$4", 8) == 0) | |
2428 | { | |
2429 | add_to_val = idata_4_prev + | |
2430 | ((MS_DLL[num_DLLs_done].num_entries + 1) * 4); | |
2431 | idata_4_prev = add_to_val; | |
2432 | } | |
2433 | else if (strncmp (name, ".idata$5", 8) == 0) | |
2434 | { | |
2435 | add_to_val = idata_5_prev + | |
2436 | ((MS_DLL[num_DLLs_done].num_entries + 1) * 4); | |
2437 | idata_5_prev = add_to_val; | |
2438 | num_DLLs_done += 1; /* assuming that idata$5 is done after $4*/ | |
2439 | } | |
2440 | } | |
2441 | else | |
2442 | { | |
2443 | /* This is the first one. The other idata$4 and 5 entries will be | |
2444 | computed from these */ | |
2445 | if (strncmp (name, ".idata$4", 8) == 0) | |
2446 | { | |
2447 | add_to_val = ((num_DLLs - 1) * 0x14) + 0x28; | |
2448 | idata_4_prev = add_to_val; | |
2449 | } | |
2450 | else if (strncmp (name, ".idata$5", 8) == 0) | |
2451 | { | |
2452 | add_to_val = idata_4_prev + (all_entries + num_DLLs) * 4; | |
2453 | idata_5_prev = add_to_val; | |
2454 | num_DLLs_done += 1; /* assuming that idata$5 is done after $4*/ | |
2455 | } | |
2456 | ||
2457 | } | |
2458 | } | |
2459 | val = val + add_to_val; | |
2460 | ||
2461 | } | |
89665c85 SC |
2462 | |
2463 | if (info->base_file) | |
2464 | { | |
2465 | /* So if this is non pcrelative, and is referenced | |
2466 | to a section or a common symbol, then it needs a reloc */ | |
2467 | if (!howto->pc_relative | |
2468 | && (sym->n_scnum | |
2469 | || sym->n_value)) | |
2470 | { | |
2471 | /* relocation to a symbol in a section which | |
2472 | isn't absolute - we output the address here | |
2473 | to a file */ | |
d84d840f | 2474 | bfd_vma addr = rel->r_vaddr |
89665c85 SC |
2475 | + input_section->output_offset |
2476 | + input_section->output_section->vma; | |
2477 | fwrite (&addr, 1,4, info->base_file); | |
2478 | } | |
2479 | } | |
d25079a0 | 2480 | |
2a895595 ILT |
2481 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
2482 | contents, | |
2483 | rel->r_vaddr - input_section->vma, | |
2484 | val, addend); | |
2485 | ||
2486 | switch (rstat) | |
2487 | { | |
2488 | default: | |
2489 | abort (); | |
2490 | case bfd_reloc_ok: | |
2491 | break; | |
2492 | case bfd_reloc_overflow: | |
2493 | { | |
2494 | const char *name; | |
2495 | char buf[SYMNMLEN + 1]; | |
2496 | ||
2497 | if (symndx == -1) | |
2498 | name = "*ABS*"; | |
2499 | else if (h != NULL) | |
2500 | name = h->root.root.string; | |
2501 | else if (sym->_n._n_n._n_zeroes == 0 | |
2502 | && sym->_n._n_n._n_offset != 0) | |
2503 | name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset; | |
2504 | else | |
2505 | { | |
2506 | strncpy (buf, sym->_n._n_name, SYMNMLEN); | |
2507 | buf[SYMNMLEN] = '\0'; | |
2508 | name = buf; | |
2509 | } | |
2510 | ||
2511 | if (! ((*info->callbacks->reloc_overflow) | |
2512 | (info, name, howto->name, (bfd_vma) 0, input_bfd, | |
2513 | input_section, rel->r_vaddr - input_section->vma))) | |
2514 | return false; | |
2515 | } | |
2516 | } | |
2517 | } | |
2518 | ||
2519 | return true; | |
2520 | } |