Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* COFF specific linker code. |
e92d460e | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
7898deda | 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 the COFF backend linker code. */ | |
23 | ||
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include "bfdlink.h" | |
27 | #include "libbfd.h" | |
28 | #include "coff/internal.h" | |
29 | #include "libcoff.h" | |
30 | ||
31 | static boolean coff_link_add_object_symbols | |
32 | PARAMS ((bfd *, struct bfd_link_info *)); | |
33 | static boolean coff_link_check_archive_element | |
34 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
35 | static boolean coff_link_check_ar_symbols | |
36 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
37 | static boolean coff_link_add_symbols PARAMS ((bfd *, struct bfd_link_info *)); | |
38 | static char *dores_com PARAMS ((char *, bfd *, int)); | |
39 | static char *get_name PARAMS ((char *, char **)); | |
40 | static int process_embedded_commands | |
41 | PARAMS ((bfd *, struct bfd_link_info *, bfd *)); | |
42 | static void mark_relocs PARAMS ((struct coff_final_link_info *, bfd *)); | |
43 | ||
e4202681 NC |
44 | /* Return true if SYM is a weak, external symbol. */ |
45 | #define IS_WEAK_EXTERNAL(abfd, sym) \ | |
46 | ((sym).n_sclass == C_WEAKEXT \ | |
47 | || (obj_pe (abfd) && (sym).n_sclass == C_NT_WEAK)) | |
48 | ||
49 | /* Return true if SYM is an external symbol. */ | |
50 | #define IS_EXTERNAL(abfd, sym) \ | |
51 | ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym)) | |
52 | ||
b2d638c7 ILT |
53 | /* Define macros so that the ISFCN, et. al., macros work correctly. |
54 | These macros are defined in include/coff/internal.h in terms of | |
55 | N_TMASK, etc. These definitions require a user to define local | |
56 | variables with the appropriate names, and with values from the | |
57 | coff_data (abfd) structure. */ | |
58 | ||
59 | #define N_TMASK n_tmask | |
60 | #define N_BTSHFT n_btshft | |
61 | #define N_BTMASK n_btmask | |
62 | ||
252b5132 RH |
63 | /* Create an entry in a COFF linker hash table. */ |
64 | ||
65 | struct bfd_hash_entry * | |
66 | _bfd_coff_link_hash_newfunc (entry, table, string) | |
67 | struct bfd_hash_entry *entry; | |
68 | struct bfd_hash_table *table; | |
69 | const char *string; | |
70 | { | |
71 | struct coff_link_hash_entry *ret = (struct coff_link_hash_entry *) entry; | |
72 | ||
73 | /* Allocate the structure if it has not already been allocated by a | |
74 | subclass. */ | |
75 | if (ret == (struct coff_link_hash_entry *) NULL) | |
76 | ret = ((struct coff_link_hash_entry *) | |
77 | bfd_hash_allocate (table, sizeof (struct coff_link_hash_entry))); | |
78 | if (ret == (struct coff_link_hash_entry *) NULL) | |
79 | return (struct bfd_hash_entry *) ret; | |
80 | ||
81 | /* Call the allocation method of the superclass. */ | |
82 | ret = ((struct coff_link_hash_entry *) | |
83 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
84 | table, string)); | |
85 | if (ret != (struct coff_link_hash_entry *) NULL) | |
86 | { | |
87 | /* Set local fields. */ | |
88 | ret->indx = -1; | |
89 | ret->type = T_NULL; | |
90 | ret->class = C_NULL; | |
91 | ret->numaux = 0; | |
92 | ret->auxbfd = NULL; | |
93 | ret->aux = NULL; | |
94 | } | |
95 | ||
96 | return (struct bfd_hash_entry *) ret; | |
97 | } | |
98 | ||
99 | /* Initialize a COFF linker hash table. */ | |
100 | ||
101 | boolean | |
102 | _bfd_coff_link_hash_table_init (table, abfd, newfunc) | |
103 | struct coff_link_hash_table *table; | |
104 | bfd *abfd; | |
105 | struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, | |
106 | struct bfd_hash_table *, | |
107 | const char *)); | |
108 | { | |
109 | table->stab_info = NULL; | |
110 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
111 | } | |
112 | ||
113 | /* Create a COFF linker hash table. */ | |
114 | ||
115 | struct bfd_link_hash_table * | |
116 | _bfd_coff_link_hash_table_create (abfd) | |
117 | bfd *abfd; | |
118 | { | |
119 | struct coff_link_hash_table *ret; | |
dc810e39 | 120 | bfd_size_type amt = sizeof (struct coff_link_hash_table); |
252b5132 | 121 | |
e2d34d7d | 122 | ret = (struct coff_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
123 | if (ret == NULL) |
124 | return NULL; | |
125 | if (! _bfd_coff_link_hash_table_init (ret, abfd, | |
126 | _bfd_coff_link_hash_newfunc)) | |
127 | { | |
e2d34d7d | 128 | free (ret); |
252b5132 RH |
129 | return (struct bfd_link_hash_table *) NULL; |
130 | } | |
131 | return &ret->root; | |
132 | } | |
133 | ||
134 | /* Create an entry in a COFF debug merge hash table. */ | |
135 | ||
136 | struct bfd_hash_entry * | |
137 | _bfd_coff_debug_merge_hash_newfunc (entry, table, string) | |
138 | struct bfd_hash_entry *entry; | |
139 | struct bfd_hash_table *table; | |
140 | const char *string; | |
141 | { | |
142 | struct coff_debug_merge_hash_entry *ret = | |
143 | (struct coff_debug_merge_hash_entry *) entry; | |
144 | ||
145 | /* Allocate the structure if it has not already been allocated by a | |
146 | subclass. */ | |
147 | if (ret == (struct coff_debug_merge_hash_entry *) NULL) | |
148 | ret = ((struct coff_debug_merge_hash_entry *) | |
149 | bfd_hash_allocate (table, | |
150 | sizeof (struct coff_debug_merge_hash_entry))); | |
151 | if (ret == (struct coff_debug_merge_hash_entry *) NULL) | |
152 | return (struct bfd_hash_entry *) ret; | |
153 | ||
154 | /* Call the allocation method of the superclass. */ | |
155 | ret = ((struct coff_debug_merge_hash_entry *) | |
156 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
157 | if (ret != (struct coff_debug_merge_hash_entry *) NULL) | |
158 | { | |
159 | /* Set local fields. */ | |
160 | ret->types = NULL; | |
161 | } | |
162 | ||
163 | return (struct bfd_hash_entry *) ret; | |
164 | } | |
165 | ||
166 | /* Given a COFF BFD, add symbols to the global hash table as | |
167 | appropriate. */ | |
168 | ||
169 | boolean | |
170 | _bfd_coff_link_add_symbols (abfd, info) | |
171 | bfd *abfd; | |
172 | struct bfd_link_info *info; | |
173 | { | |
174 | switch (bfd_get_format (abfd)) | |
175 | { | |
176 | case bfd_object: | |
177 | return coff_link_add_object_symbols (abfd, info); | |
178 | case bfd_archive: | |
179 | return (_bfd_generic_link_add_archive_symbols | |
180 | (abfd, info, coff_link_check_archive_element)); | |
181 | default: | |
182 | bfd_set_error (bfd_error_wrong_format); | |
183 | return false; | |
184 | } | |
185 | } | |
186 | ||
187 | /* Add symbols from a COFF object file. */ | |
188 | ||
189 | static boolean | |
190 | coff_link_add_object_symbols (abfd, info) | |
191 | bfd *abfd; | |
192 | struct bfd_link_info *info; | |
193 | { | |
194 | if (! _bfd_coff_get_external_symbols (abfd)) | |
195 | return false; | |
196 | if (! coff_link_add_symbols (abfd, info)) | |
197 | return false; | |
198 | ||
199 | if (! info->keep_memory) | |
200 | { | |
201 | if (! _bfd_coff_free_symbols (abfd)) | |
202 | return false; | |
203 | } | |
204 | return true; | |
205 | } | |
206 | ||
207 | /* Check a single archive element to see if we need to include it in | |
208 | the link. *PNEEDED is set according to whether this element is | |
209 | needed in the link or not. This is called via | |
210 | _bfd_generic_link_add_archive_symbols. */ | |
211 | ||
212 | static boolean | |
213 | coff_link_check_archive_element (abfd, info, pneeded) | |
214 | bfd *abfd; | |
215 | struct bfd_link_info *info; | |
216 | boolean *pneeded; | |
217 | { | |
218 | if (! _bfd_coff_get_external_symbols (abfd)) | |
219 | return false; | |
220 | ||
221 | if (! coff_link_check_ar_symbols (abfd, info, pneeded)) | |
222 | return false; | |
223 | ||
224 | if (*pneeded) | |
225 | { | |
226 | if (! coff_link_add_symbols (abfd, info)) | |
227 | return false; | |
228 | } | |
229 | ||
230 | if (! info->keep_memory || ! *pneeded) | |
231 | { | |
232 | if (! _bfd_coff_free_symbols (abfd)) | |
233 | return false; | |
234 | } | |
235 | ||
236 | return true; | |
237 | } | |
238 | ||
239 | /* Look through the symbols to see if this object file should be | |
240 | included in the link. */ | |
241 | ||
242 | static boolean | |
243 | coff_link_check_ar_symbols (abfd, info, pneeded) | |
244 | bfd *abfd; | |
245 | struct bfd_link_info *info; | |
246 | boolean *pneeded; | |
247 | { | |
252b5132 RH |
248 | bfd_size_type symesz; |
249 | bfd_byte *esym; | |
250 | bfd_byte *esym_end; | |
251 | ||
252 | *pneeded = false; | |
253 | ||
252b5132 RH |
254 | symesz = bfd_coff_symesz (abfd); |
255 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
256 | esym_end = esym + obj_raw_syment_count (abfd) * symesz; | |
257 | while (esym < esym_end) | |
258 | { | |
259 | struct internal_syment sym; | |
5d54c628 | 260 | enum coff_symbol_classification classification; |
252b5132 RH |
261 | |
262 | bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); | |
263 | ||
5d54c628 ILT |
264 | classification = bfd_coff_classify_symbol (abfd, &sym); |
265 | if (classification == COFF_SYMBOL_GLOBAL | |
266 | || classification == COFF_SYMBOL_COMMON) | |
252b5132 RH |
267 | { |
268 | const char *name; | |
269 | char buf[SYMNMLEN + 1]; | |
270 | struct bfd_link_hash_entry *h; | |
271 | ||
272 | /* This symbol is externally visible, and is defined by this | |
273 | object file. */ | |
274 | ||
275 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
276 | if (name == NULL) | |
277 | return false; | |
278 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); | |
279 | ||
8ceb7a1b CW |
280 | /* auto import */ |
281 | if (!h && info->pei386_auto_import) | |
282 | { | |
283 | if (!strncmp (name,"__imp_", 6)) | |
284 | { | |
285 | h = | |
286 | bfd_link_hash_lookup (info->hash, name + 6, false, false, | |
287 | true); | |
288 | } | |
289 | } | |
252b5132 RH |
290 | /* We are only interested in symbols that are currently |
291 | undefined. If a symbol is currently known to be common, | |
292 | COFF linkers do not bring in an object file which defines | |
293 | it. */ | |
294 | if (h != (struct bfd_link_hash_entry *) NULL | |
295 | && h->type == bfd_link_hash_undefined) | |
296 | { | |
297 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
298 | return false; | |
299 | *pneeded = true; | |
300 | return true; | |
301 | } | |
302 | } | |
303 | ||
304 | esym += (sym.n_numaux + 1) * symesz; | |
305 | } | |
306 | ||
307 | /* We do not need this object file. */ | |
308 | return true; | |
309 | } | |
310 | ||
311 | /* Add all the symbols from an object file to the hash table. */ | |
312 | ||
313 | static boolean | |
314 | coff_link_add_symbols (abfd, info) | |
315 | bfd *abfd; | |
316 | struct bfd_link_info *info; | |
317 | { | |
b2d638c7 ILT |
318 | unsigned int n_tmask = coff_data (abfd)->local_n_tmask; |
319 | unsigned int n_btshft = coff_data (abfd)->local_n_btshft; | |
320 | unsigned int n_btmask = coff_data (abfd)->local_n_btmask; | |
252b5132 RH |
321 | boolean keep_syms; |
322 | boolean default_copy; | |
323 | bfd_size_type symcount; | |
324 | struct coff_link_hash_entry **sym_hash; | |
325 | bfd_size_type symesz; | |
326 | bfd_byte *esym; | |
327 | bfd_byte *esym_end; | |
dc810e39 | 328 | bfd_size_type amt; |
252b5132 RH |
329 | |
330 | /* Keep the symbols during this function, in case the linker needs | |
331 | to read the generic symbols in order to report an error message. */ | |
332 | keep_syms = obj_coff_keep_syms (abfd); | |
333 | obj_coff_keep_syms (abfd) = true; | |
334 | ||
252b5132 RH |
335 | if (info->keep_memory) |
336 | default_copy = false; | |
337 | else | |
338 | default_copy = true; | |
339 | ||
340 | symcount = obj_raw_syment_count (abfd); | |
341 | ||
342 | /* We keep a list of the linker hash table entries that correspond | |
343 | to particular symbols. */ | |
dc810e39 | 344 | amt = symcount * sizeof (struct coff_link_hash_entry *); |
9bab7074 | 345 | sym_hash = (struct coff_link_hash_entry **) bfd_zalloc (abfd, amt); |
252b5132 RH |
346 | if (sym_hash == NULL && symcount != 0) |
347 | goto error_return; | |
348 | obj_coff_sym_hashes (abfd) = sym_hash; | |
252b5132 RH |
349 | |
350 | symesz = bfd_coff_symesz (abfd); | |
351 | BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); | |
352 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
353 | esym_end = esym + symcount * symesz; | |
354 | while (esym < esym_end) | |
355 | { | |
356 | struct internal_syment sym; | |
5d54c628 | 357 | enum coff_symbol_classification classification; |
252b5132 RH |
358 | boolean copy; |
359 | ||
360 | bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); | |
361 | ||
5d54c628 ILT |
362 | classification = bfd_coff_classify_symbol (abfd, &sym); |
363 | if (classification != COFF_SYMBOL_LOCAL) | |
252b5132 RH |
364 | { |
365 | const char *name; | |
366 | char buf[SYMNMLEN + 1]; | |
367 | flagword flags; | |
368 | asection *section; | |
369 | bfd_vma value; | |
7fd9c191 | 370 | boolean addit; |
252b5132 RH |
371 | |
372 | /* This symbol is externally visible. */ | |
373 | ||
374 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
375 | if (name == NULL) | |
376 | goto error_return; | |
377 | ||
378 | /* We must copy the name into memory if we got it from the | |
379 | syment itself, rather than the string table. */ | |
380 | copy = default_copy; | |
381 | if (sym._n._n_n._n_zeroes != 0 | |
382 | || sym._n._n_n._n_offset == 0) | |
383 | copy = true; | |
384 | ||
385 | value = sym.n_value; | |
386 | ||
5d54c628 | 387 | switch (classification) |
252b5132 | 388 | { |
5d54c628 ILT |
389 | default: |
390 | abort (); | |
391 | ||
392 | case COFF_SYMBOL_GLOBAL: | |
252b5132 RH |
393 | flags = BSF_EXPORT | BSF_GLOBAL; |
394 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
395 | if (! obj_pe (abfd)) | |
396 | value -= section->vma; | |
5d54c628 ILT |
397 | break; |
398 | ||
399 | case COFF_SYMBOL_UNDEFINED: | |
400 | flags = 0; | |
401 | section = bfd_und_section_ptr; | |
402 | break; | |
403 | ||
404 | case COFF_SYMBOL_COMMON: | |
405 | flags = BSF_GLOBAL; | |
406 | section = bfd_com_section_ptr; | |
407 | break; | |
408 | ||
409 | case COFF_SYMBOL_PE_SECTION: | |
410 | flags = BSF_SECTION_SYM | BSF_GLOBAL; | |
411 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
412 | break; | |
252b5132 RH |
413 | } |
414 | ||
e4202681 | 415 | if (IS_WEAK_EXTERNAL (abfd, sym)) |
252b5132 RH |
416 | flags = BSF_WEAK; |
417 | ||
7fd9c191 ILT |
418 | addit = true; |
419 | ||
420 | /* In the PE format, section symbols actually refer to the | |
421 | start of the output section. We handle them specially | |
422 | here. */ | |
423 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) | |
424 | { | |
425 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
426 | name, false, copy, false); | |
427 | if (*sym_hash != NULL) | |
428 | { | |
429 | if (((*sym_hash)->coff_link_hash_flags | |
430 | & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0 | |
431 | && (*sym_hash)->root.type != bfd_link_hash_undefined | |
432 | && (*sym_hash)->root.type != bfd_link_hash_undefweak) | |
433 | (*_bfd_error_handler) | |
434 | ("Warning: symbol `%s' is both section and non-section", | |
435 | name); | |
436 | ||
437 | addit = false; | |
438 | } | |
439 | } | |
440 | ||
49147fca ILT |
441 | /* The Microsoft Visual C compiler does string pooling by |
442 | hashing the constants to an internal symbol name, and | |
08da05b0 | 443 | relying on the linker comdat support to discard |
49147fca ILT |
444 | duplicate names. However, if one string is a literal and |
445 | one is a data initializer, one will end up in the .data | |
446 | section and one will end up in the .rdata section. The | |
447 | Microsoft linker will combine them into the .data | |
448 | section, which seems to be wrong since it might cause the | |
449 | literal to change. | |
450 | ||
451 | As long as there are no external references to the | |
452 | symbols, which there shouldn't be, we can treat the .data | |
453 | and .rdata instances as separate symbols. The comdat | |
454 | code in the linker will do the appropriate merging. Here | |
455 | we avoid getting a multiple definition error for one of | |
456 | these special symbols. | |
457 | ||
458 | FIXME: I don't think this will work in the case where | |
459 | there are two object files which use the constants as a | |
460 | literal and two object files which use it as a data | |
461 | initializer. One or the other of the second object files | |
462 | is going to wind up with an inappropriate reference. */ | |
463 | if (obj_pe (abfd) | |
464 | && (classification == COFF_SYMBOL_GLOBAL | |
465 | || classification == COFF_SYMBOL_PE_SECTION) | |
466 | && section->comdat != NULL | |
467 | && strncmp (name, "??_", 3) == 0 | |
468 | && strcmp (name, section->comdat->name) == 0) | |
469 | { | |
470 | if (*sym_hash == NULL) | |
471 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
472 | name, false, copy, false); | |
473 | if (*sym_hash != NULL | |
474 | && (*sym_hash)->root.type == bfd_link_hash_defined | |
475 | && (*sym_hash)->root.u.def.section->comdat != NULL | |
476 | && strcmp ((*sym_hash)->root.u.def.section->comdat->name, | |
477 | section->comdat->name) == 0) | |
478 | addit = false; | |
479 | } | |
480 | ||
7fd9c191 ILT |
481 | if (addit) |
482 | { | |
483 | if (! (bfd_coff_link_add_one_symbol | |
484 | (info, abfd, name, flags, section, value, | |
485 | (const char *) NULL, copy, false, | |
486 | (struct bfd_link_hash_entry **) sym_hash))) | |
487 | goto error_return; | |
488 | } | |
489 | ||
490 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) | |
491 | (*sym_hash)->coff_link_hash_flags |= | |
492 | COFF_LINK_HASH_PE_SECTION_SYMBOL; | |
252b5132 | 493 | |
2820a0b7 ILT |
494 | /* Limit the alignment of a common symbol to the possible |
495 | alignment of a section. There is no point to permitting | |
496 | a higher alignment for a common symbol: we can not | |
497 | guarantee it, and it may cause us to allocate extra space | |
498 | in the common section. */ | |
252b5132 RH |
499 | if (section == bfd_com_section_ptr |
500 | && (*sym_hash)->root.type == bfd_link_hash_common | |
501 | && ((*sym_hash)->root.u.c.p->alignment_power | |
502 | > bfd_coff_default_section_alignment_power (abfd))) | |
503 | (*sym_hash)->root.u.c.p->alignment_power | |
504 | = bfd_coff_default_section_alignment_power (abfd); | |
505 | ||
506 | if (info->hash->creator->flavour == bfd_get_flavour (abfd)) | |
507 | { | |
5d3aaa74 ILT |
508 | /* If we don't have any symbol information currently in |
509 | the hash table, or if we are looking at a symbol | |
510 | definition, then update the symbol class and type in | |
511 | the hash table. */ | |
512 | if (((*sym_hash)->class == C_NULL | |
513 | && (*sym_hash)->type == T_NULL) | |
514 | || sym.n_scnum != 0 | |
515 | || (sym.n_value != 0 | |
516 | && (*sym_hash)->root.type != bfd_link_hash_defined | |
517 | && (*sym_hash)->root.type != bfd_link_hash_defweak)) | |
518 | { | |
519 | (*sym_hash)->class = sym.n_sclass; | |
520 | if (sym.n_type != T_NULL) | |
521 | { | |
522 | /* We want to warn if the type changed, but not | |
523 | if it changed from an unspecified type. | |
524 | Testing the whole type byte may work, but the | |
525 | change from (e.g.) a function of unspecified | |
526 | type to function of known type also wants to | |
527 | skip the warning. */ | |
528 | if ((*sym_hash)->type != T_NULL | |
529 | && (*sym_hash)->type != sym.n_type | |
530 | && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type) | |
531 | && (BTYPE ((*sym_hash)->type) == T_NULL | |
532 | || BTYPE (sym.n_type) == T_NULL))) | |
533 | (*_bfd_error_handler) | |
534 | (_("Warning: type of symbol `%s' changed from %d to %d in %s"), | |
535 | name, (*sym_hash)->type, sym.n_type, | |
8f615d07 | 536 | bfd_archive_filename (abfd)); |
5d3aaa74 ILT |
537 | |
538 | /* We don't want to change from a meaningful | |
539 | base type to a null one, but if we know | |
540 | nothing, take what little we might now know. */ | |
541 | if (BTYPE (sym.n_type) != T_NULL | |
542 | || (*sym_hash)->type == T_NULL) | |
543 | (*sym_hash)->type = sym.n_type; | |
544 | } | |
545 | (*sym_hash)->auxbfd = abfd; | |
252b5132 RH |
546 | if (sym.n_numaux != 0) |
547 | { | |
548 | union internal_auxent *alloc; | |
549 | unsigned int i; | |
550 | bfd_byte *eaux; | |
551 | union internal_auxent *iaux; | |
552 | ||
553 | (*sym_hash)->numaux = sym.n_numaux; | |
554 | alloc = ((union internal_auxent *) | |
555 | bfd_hash_allocate (&info->hash->table, | |
556 | (sym.n_numaux | |
557 | * sizeof (*alloc)))); | |
558 | if (alloc == NULL) | |
559 | goto error_return; | |
560 | for (i = 0, eaux = esym + symesz, iaux = alloc; | |
561 | i < sym.n_numaux; | |
562 | i++, eaux += symesz, iaux++) | |
563 | bfd_coff_swap_aux_in (abfd, (PTR) eaux, sym.n_type, | |
dc810e39 AM |
564 | sym.n_sclass, (int) i, |
565 | sym.n_numaux, (PTR) iaux); | |
252b5132 RH |
566 | (*sym_hash)->aux = alloc; |
567 | } | |
568 | } | |
569 | } | |
5d54c628 ILT |
570 | |
571 | if (classification == COFF_SYMBOL_PE_SECTION | |
572 | && (*sym_hash)->numaux != 0) | |
573 | { | |
574 | /* Some PE sections (such as .bss) have a zero size in | |
575 | the section header, but a non-zero size in the AUX | |
576 | record. Correct that here. | |
577 | ||
578 | FIXME: This is not at all the right place to do this. | |
579 | For example, it won't help objdump. This needs to be | |
580 | done when we swap in the section header. */ | |
581 | ||
582 | BFD_ASSERT ((*sym_hash)->numaux == 1); | |
583 | if (section->_raw_size == 0) | |
584 | section->_raw_size = (*sym_hash)->aux[0].x_scn.x_scnlen; | |
585 | ||
586 | /* FIXME: We could test whether the section sizes | |
587 | matches the size in the aux entry, but apparently | |
588 | that sometimes fails unexpectedly. */ | |
589 | } | |
252b5132 RH |
590 | } |
591 | ||
592 | esym += (sym.n_numaux + 1) * symesz; | |
593 | sym_hash += sym.n_numaux + 1; | |
594 | } | |
595 | ||
596 | /* If this is a non-traditional, non-relocateable link, try to | |
597 | optimize the handling of any .stab/.stabstr sections. */ | |
598 | if (! info->relocateable | |
599 | && ! info->traditional_format | |
600 | && info->hash->creator->flavour == bfd_get_flavour (abfd) | |
601 | && (info->strip != strip_all && info->strip != strip_debugger)) | |
602 | { | |
603 | asection *stab, *stabstr; | |
604 | ||
605 | stab = bfd_get_section_by_name (abfd, ".stab"); | |
606 | if (stab != NULL) | |
607 | { | |
608 | stabstr = bfd_get_section_by_name (abfd, ".stabstr"); | |
609 | ||
610 | if (stabstr != NULL) | |
611 | { | |
612 | struct coff_link_hash_table *table; | |
613 | struct coff_section_tdata *secdata; | |
614 | ||
615 | secdata = coff_section_data (abfd, stab); | |
616 | if (secdata == NULL) | |
617 | { | |
dc810e39 AM |
618 | amt = sizeof (struct coff_section_tdata); |
619 | stab->used_by_bfd = (PTR) bfd_zalloc (abfd, amt); | |
252b5132 RH |
620 | if (stab->used_by_bfd == NULL) |
621 | goto error_return; | |
622 | secdata = coff_section_data (abfd, stab); | |
623 | } | |
624 | ||
625 | table = coff_hash_table (info); | |
626 | ||
627 | if (! _bfd_link_section_stabs (abfd, &table->stab_info, | |
628 | stab, stabstr, | |
629 | &secdata->stab_info)) | |
630 | goto error_return; | |
631 | } | |
632 | } | |
633 | } | |
634 | ||
635 | obj_coff_keep_syms (abfd) = keep_syms; | |
636 | ||
637 | return true; | |
638 | ||
639 | error_return: | |
640 | obj_coff_keep_syms (abfd) = keep_syms; | |
641 | return false; | |
642 | } | |
643 | \f | |
644 | /* Do the final link step. */ | |
645 | ||
646 | boolean | |
647 | _bfd_coff_final_link (abfd, info) | |
648 | bfd *abfd; | |
649 | struct bfd_link_info *info; | |
650 | { | |
651 | bfd_size_type symesz; | |
652 | struct coff_final_link_info finfo; | |
653 | boolean debug_merge_allocated; | |
654 | boolean long_section_names; | |
655 | asection *o; | |
656 | struct bfd_link_order *p; | |
dc810e39 AM |
657 | bfd_size_type max_sym_count; |
658 | bfd_size_type max_lineno_count; | |
659 | bfd_size_type max_reloc_count; | |
660 | bfd_size_type max_output_reloc_count; | |
661 | bfd_size_type max_contents_size; | |
252b5132 RH |
662 | file_ptr rel_filepos; |
663 | unsigned int relsz; | |
664 | file_ptr line_filepos; | |
665 | unsigned int linesz; | |
666 | bfd *sub; | |
667 | bfd_byte *external_relocs = NULL; | |
668 | char strbuf[STRING_SIZE_SIZE]; | |
dc810e39 | 669 | bfd_size_type amt; |
252b5132 RH |
670 | |
671 | symesz = bfd_coff_symesz (abfd); | |
672 | ||
673 | finfo.info = info; | |
674 | finfo.output_bfd = abfd; | |
675 | finfo.strtab = NULL; | |
676 | finfo.section_info = NULL; | |
677 | finfo.last_file_index = -1; | |
678 | finfo.last_bf_index = -1; | |
679 | finfo.internal_syms = NULL; | |
680 | finfo.sec_ptrs = NULL; | |
681 | finfo.sym_indices = NULL; | |
682 | finfo.outsyms = NULL; | |
683 | finfo.linenos = NULL; | |
684 | finfo.contents = NULL; | |
685 | finfo.external_relocs = NULL; | |
686 | finfo.internal_relocs = NULL; | |
687 | finfo.global_to_static = false; | |
688 | debug_merge_allocated = false; | |
689 | ||
690 | coff_data (abfd)->link_info = info; | |
691 | ||
692 | finfo.strtab = _bfd_stringtab_init (); | |
693 | if (finfo.strtab == NULL) | |
694 | goto error_return; | |
695 | ||
696 | if (! coff_debug_merge_hash_table_init (&finfo.debug_merge)) | |
697 | goto error_return; | |
698 | debug_merge_allocated = true; | |
699 | ||
700 | /* Compute the file positions for all the sections. */ | |
701 | if (! abfd->output_has_begun) | |
702 | { | |
703 | if (! bfd_coff_compute_section_file_positions (abfd)) | |
704 | goto error_return; | |
705 | } | |
706 | ||
707 | /* Count the line numbers and relocation entries required for the | |
708 | output file. Set the file positions for the relocs. */ | |
709 | rel_filepos = obj_relocbase (abfd); | |
710 | relsz = bfd_coff_relsz (abfd); | |
711 | max_contents_size = 0; | |
712 | max_lineno_count = 0; | |
713 | max_reloc_count = 0; | |
714 | ||
715 | long_section_names = false; | |
716 | for (o = abfd->sections; o != NULL; o = o->next) | |
717 | { | |
718 | o->reloc_count = 0; | |
719 | o->lineno_count = 0; | |
720 | for (p = o->link_order_head; p != NULL; p = p->next) | |
721 | { | |
722 | if (p->type == bfd_indirect_link_order) | |
723 | { | |
724 | asection *sec; | |
725 | ||
726 | sec = p->u.indirect.section; | |
727 | ||
728 | /* Mark all sections which are to be included in the | |
729 | link. This will normally be every section. We need | |
730 | to do this so that we can identify any sections which | |
731 | the linker has decided to not include. */ | |
732 | sec->linker_mark = true; | |
733 | ||
734 | if (info->strip == strip_none | |
735 | || info->strip == strip_some) | |
736 | o->lineno_count += sec->lineno_count; | |
737 | ||
738 | if (info->relocateable) | |
739 | o->reloc_count += sec->reloc_count; | |
740 | ||
741 | if (sec->_raw_size > max_contents_size) | |
742 | max_contents_size = sec->_raw_size; | |
743 | if (sec->lineno_count > max_lineno_count) | |
744 | max_lineno_count = sec->lineno_count; | |
745 | if (sec->reloc_count > max_reloc_count) | |
746 | max_reloc_count = sec->reloc_count; | |
747 | } | |
748 | else if (info->relocateable | |
749 | && (p->type == bfd_section_reloc_link_order | |
750 | || p->type == bfd_symbol_reloc_link_order)) | |
751 | ++o->reloc_count; | |
752 | } | |
753 | if (o->reloc_count == 0) | |
754 | o->rel_filepos = 0; | |
755 | else | |
756 | { | |
757 | o->flags |= SEC_RELOC; | |
758 | o->rel_filepos = rel_filepos; | |
759 | rel_filepos += o->reloc_count * relsz; | |
e9168c1e MM |
760 | /* In PE COFF, if there are at least 0xffff relocations an |
761 | extra relocation will be written out to encode the count. */ | |
762 | if (obj_pe (abfd) && o->reloc_count >= 0xffff) | |
763 | rel_filepos += relsz; | |
252b5132 RH |
764 | } |
765 | ||
766 | if (bfd_coff_long_section_names (abfd) | |
767 | && strlen (o->name) > SCNNMLEN) | |
768 | { | |
769 | /* This section has a long name which must go in the string | |
770 | table. This must correspond to the code in | |
771 | coff_write_object_contents which puts the string index | |
772 | into the s_name field of the section header. That is why | |
773 | we pass hash as false. */ | |
774 | if (_bfd_stringtab_add (finfo.strtab, o->name, false, false) | |
775 | == (bfd_size_type) -1) | |
776 | goto error_return; | |
777 | long_section_names = true; | |
778 | } | |
779 | } | |
780 | ||
781 | /* If doing a relocateable link, allocate space for the pointers we | |
782 | need to keep. */ | |
783 | if (info->relocateable) | |
784 | { | |
785 | unsigned int i; | |
786 | ||
787 | /* We use section_count + 1, rather than section_count, because | |
788 | the target_index fields are 1 based. */ | |
dc810e39 AM |
789 | amt = abfd->section_count + 1; |
790 | amt *= sizeof (struct coff_link_section_info); | |
791 | finfo.section_info = (struct coff_link_section_info *) bfd_malloc (amt); | |
252b5132 RH |
792 | if (finfo.section_info == NULL) |
793 | goto error_return; | |
794 | for (i = 0; i <= abfd->section_count; i++) | |
795 | { | |
796 | finfo.section_info[i].relocs = NULL; | |
797 | finfo.section_info[i].rel_hashes = NULL; | |
798 | } | |
799 | } | |
800 | ||
801 | /* We now know the size of the relocs, so we can determine the file | |
802 | positions of the line numbers. */ | |
803 | line_filepos = rel_filepos; | |
804 | linesz = bfd_coff_linesz (abfd); | |
805 | max_output_reloc_count = 0; | |
806 | for (o = abfd->sections; o != NULL; o = o->next) | |
807 | { | |
808 | if (o->lineno_count == 0) | |
809 | o->line_filepos = 0; | |
810 | else | |
811 | { | |
812 | o->line_filepos = line_filepos; | |
813 | line_filepos += o->lineno_count * linesz; | |
814 | } | |
815 | ||
816 | if (o->reloc_count != 0) | |
817 | { | |
818 | /* We don't know the indices of global symbols until we have | |
819 | written out all the local symbols. For each section in | |
820 | the output file, we keep an array of pointers to hash | |
821 | table entries. Each entry in the array corresponds to a | |
822 | reloc. When we find a reloc against a global symbol, we | |
823 | set the corresponding entry in this array so that we can | |
824 | fix up the symbol index after we have written out all the | |
825 | local symbols. | |
826 | ||
827 | Because of this problem, we also keep the relocs in | |
828 | memory until the end of the link. This wastes memory, | |
829 | but only when doing a relocateable link, which is not the | |
830 | common case. */ | |
831 | BFD_ASSERT (info->relocateable); | |
dc810e39 AM |
832 | amt = o->reloc_count; |
833 | amt *= sizeof (struct internal_reloc); | |
252b5132 | 834 | finfo.section_info[o->target_index].relocs = |
dc810e39 AM |
835 | (struct internal_reloc *) bfd_malloc (amt); |
836 | amt = o->reloc_count; | |
837 | amt *= sizeof (struct coff_link_hash_entry *); | |
252b5132 | 838 | finfo.section_info[o->target_index].rel_hashes = |
dc810e39 | 839 | (struct coff_link_hash_entry **) bfd_malloc (amt); |
252b5132 RH |
840 | if (finfo.section_info[o->target_index].relocs == NULL |
841 | || finfo.section_info[o->target_index].rel_hashes == NULL) | |
842 | goto error_return; | |
843 | ||
844 | if (o->reloc_count > max_output_reloc_count) | |
845 | max_output_reloc_count = o->reloc_count; | |
846 | } | |
847 | ||
848 | /* Reset the reloc and lineno counts, so that we can use them to | |
849 | count the number of entries we have output so far. */ | |
850 | o->reloc_count = 0; | |
851 | o->lineno_count = 0; | |
852 | } | |
853 | ||
854 | obj_sym_filepos (abfd) = line_filepos; | |
855 | ||
856 | /* Figure out the largest number of symbols in an input BFD. Take | |
857 | the opportunity to clear the output_has_begun fields of all the | |
858 | input BFD's. */ | |
859 | max_sym_count = 0; | |
860 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
861 | { | |
862 | size_t sz; | |
863 | ||
864 | sub->output_has_begun = false; | |
865 | sz = obj_raw_syment_count (sub); | |
866 | if (sz > max_sym_count) | |
867 | max_sym_count = sz; | |
868 | } | |
869 | ||
870 | /* Allocate some buffers used while linking. */ | |
dc810e39 AM |
871 | amt = max_sym_count * sizeof (struct internal_syment); |
872 | finfo.internal_syms = (struct internal_syment *) bfd_malloc (amt); | |
873 | amt = max_sym_count * sizeof (asection *); | |
874 | finfo.sec_ptrs = (asection **) bfd_malloc (amt); | |
875 | amt = max_sym_count * sizeof (long); | |
876 | finfo.sym_indices = (long *) bfd_malloc (amt); | |
877 | finfo.outsyms = (bfd_byte *) bfd_malloc ((max_sym_count + 1) * symesz); | |
878 | amt = max_lineno_count * bfd_coff_linesz (abfd); | |
879 | finfo.linenos = (bfd_byte *) bfd_malloc (amt); | |
252b5132 | 880 | finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size); |
dc810e39 AM |
881 | amt = max_reloc_count * relsz; |
882 | finfo.external_relocs = (bfd_byte *) bfd_malloc (amt); | |
252b5132 | 883 | if (! info->relocateable) |
dc810e39 AM |
884 | { |
885 | amt = max_reloc_count * sizeof (struct internal_reloc); | |
886 | finfo.internal_relocs = (struct internal_reloc *) bfd_malloc (amt); | |
887 | } | |
252b5132 RH |
888 | if ((finfo.internal_syms == NULL && max_sym_count > 0) |
889 | || (finfo.sec_ptrs == NULL && max_sym_count > 0) | |
890 | || (finfo.sym_indices == NULL && max_sym_count > 0) | |
891 | || finfo.outsyms == NULL | |
892 | || (finfo.linenos == NULL && max_lineno_count > 0) | |
893 | || (finfo.contents == NULL && max_contents_size > 0) | |
894 | || (finfo.external_relocs == NULL && max_reloc_count > 0) | |
895 | || (! info->relocateable | |
896 | && finfo.internal_relocs == NULL | |
897 | && max_reloc_count > 0)) | |
898 | goto error_return; | |
899 | ||
900 | /* We now know the position of everything in the file, except that | |
901 | we don't know the size of the symbol table and therefore we don't | |
902 | know where the string table starts. We just build the string | |
903 | table in memory as we go along. We process all the relocations | |
904 | for a single input file at once. */ | |
905 | obj_raw_syment_count (abfd) = 0; | |
906 | ||
907 | if (coff_backend_info (abfd)->_bfd_coff_start_final_link) | |
908 | { | |
909 | if (! bfd_coff_start_final_link (abfd, info)) | |
910 | goto error_return; | |
911 | } | |
912 | ||
913 | for (o = abfd->sections; o != NULL; o = o->next) | |
914 | { | |
915 | for (p = o->link_order_head; p != NULL; p = p->next) | |
916 | { | |
917 | if (p->type == bfd_indirect_link_order | |
9bd09e22 | 918 | && bfd_family_coff (p->u.indirect.section->owner)) |
252b5132 RH |
919 | { |
920 | sub = p->u.indirect.section->owner; | |
921 | if (! bfd_coff_link_output_has_begun (sub, & finfo)) | |
922 | { | |
923 | if (! _bfd_coff_link_input_bfd (&finfo, sub)) | |
924 | goto error_return; | |
925 | sub->output_has_begun = true; | |
926 | } | |
927 | } | |
928 | else if (p->type == bfd_section_reloc_link_order | |
929 | || p->type == bfd_symbol_reloc_link_order) | |
930 | { | |
931 | if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p)) | |
932 | goto error_return; | |
933 | } | |
934 | else | |
935 | { | |
936 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
937 | goto error_return; | |
938 | } | |
939 | } | |
940 | } | |
941 | ||
942 | if (! bfd_coff_final_link_postscript (abfd, & finfo)) | |
943 | goto error_return; | |
244148ad | 944 | |
252b5132 RH |
945 | /* Free up the buffers used by _bfd_coff_link_input_bfd. */ |
946 | ||
947 | coff_debug_merge_hash_table_free (&finfo.debug_merge); | |
948 | debug_merge_allocated = false; | |
949 | ||
950 | if (finfo.internal_syms != NULL) | |
951 | { | |
952 | free (finfo.internal_syms); | |
953 | finfo.internal_syms = NULL; | |
954 | } | |
955 | if (finfo.sec_ptrs != NULL) | |
956 | { | |
957 | free (finfo.sec_ptrs); | |
958 | finfo.sec_ptrs = NULL; | |
959 | } | |
960 | if (finfo.sym_indices != NULL) | |
961 | { | |
962 | free (finfo.sym_indices); | |
963 | finfo.sym_indices = NULL; | |
964 | } | |
965 | if (finfo.linenos != NULL) | |
966 | { | |
967 | free (finfo.linenos); | |
968 | finfo.linenos = NULL; | |
969 | } | |
970 | if (finfo.contents != NULL) | |
971 | { | |
972 | free (finfo.contents); | |
973 | finfo.contents = NULL; | |
974 | } | |
975 | if (finfo.external_relocs != NULL) | |
976 | { | |
977 | free (finfo.external_relocs); | |
978 | finfo.external_relocs = NULL; | |
979 | } | |
980 | if (finfo.internal_relocs != NULL) | |
981 | { | |
982 | free (finfo.internal_relocs); | |
983 | finfo.internal_relocs = NULL; | |
984 | } | |
985 | ||
986 | /* The value of the last C_FILE symbol is supposed to be the symbol | |
987 | index of the first external symbol. Write it out again if | |
988 | necessary. */ | |
989 | if (finfo.last_file_index != -1 | |
990 | && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd)) | |
991 | { | |
dc810e39 AM |
992 | file_ptr pos; |
993 | ||
252b5132 RH |
994 | finfo.last_file.n_value = obj_raw_syment_count (abfd); |
995 | bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file, | |
996 | (PTR) finfo.outsyms); | |
dc810e39 AM |
997 | |
998 | pos = obj_sym_filepos (abfd) + finfo.last_file_index * symesz; | |
999 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
1000 | || bfd_bwrite (finfo.outsyms, symesz, abfd) != symesz) | |
252b5132 RH |
1001 | return false; |
1002 | } | |
1003 | ||
1004 | /* If doing task linking (ld --task-link) then make a pass through the | |
1005 | global symbols, writing out any that are defined, and making them | |
244148ad | 1006 | static. */ |
252b5132 RH |
1007 | if (info->task_link) |
1008 | { | |
1009 | finfo.failed = false; | |
e92d460e AM |
1010 | coff_link_hash_traverse (coff_hash_table (info), |
1011 | _bfd_coff_write_task_globals, | |
252b5132 RH |
1012 | (PTR) &finfo); |
1013 | if (finfo.failed) | |
1014 | goto error_return; | |
1015 | } | |
1016 | ||
1017 | /* Write out the global symbols. */ | |
1018 | finfo.failed = false; | |
e92d460e AM |
1019 | coff_link_hash_traverse (coff_hash_table (info), |
1020 | _bfd_coff_write_global_sym, | |
252b5132 RH |
1021 | (PTR) &finfo); |
1022 | if (finfo.failed) | |
1023 | goto error_return; | |
1024 | ||
1025 | /* The outsyms buffer is used by _bfd_coff_write_global_sym. */ | |
1026 | if (finfo.outsyms != NULL) | |
1027 | { | |
1028 | free (finfo.outsyms); | |
1029 | finfo.outsyms = NULL; | |
1030 | } | |
1031 | ||
1032 | if (info->relocateable && max_output_reloc_count > 0) | |
1033 | { | |
1034 | /* Now that we have written out all the global symbols, we know | |
1035 | the symbol indices to use for relocs against them, and we can | |
1036 | finally write out the relocs. */ | |
dc810e39 AM |
1037 | amt = max_output_reloc_count * relsz; |
1038 | external_relocs = (bfd_byte *) bfd_malloc (amt); | |
252b5132 RH |
1039 | if (external_relocs == NULL) |
1040 | goto error_return; | |
1041 | ||
1042 | for (o = abfd->sections; o != NULL; o = o->next) | |
1043 | { | |
1044 | struct internal_reloc *irel; | |
1045 | struct internal_reloc *irelend; | |
1046 | struct coff_link_hash_entry **rel_hash; | |
1047 | bfd_byte *erel; | |
1048 | ||
1049 | if (o->reloc_count == 0) | |
1050 | continue; | |
1051 | ||
1052 | irel = finfo.section_info[o->target_index].relocs; | |
1053 | irelend = irel + o->reloc_count; | |
1054 | rel_hash = finfo.section_info[o->target_index].rel_hashes; | |
1055 | erel = external_relocs; | |
1056 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) | |
1057 | { | |
1058 | if (*rel_hash != NULL) | |
1059 | { | |
1060 | BFD_ASSERT ((*rel_hash)->indx >= 0); | |
1061 | irel->r_symndx = (*rel_hash)->indx; | |
1062 | } | |
1063 | bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel); | |
1064 | } | |
1065 | ||
1066 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 | |
dc810e39 AM |
1067 | || (bfd_bwrite ((PTR) external_relocs, |
1068 | (bfd_size_type) relsz * o->reloc_count, abfd) | |
1069 | != (bfd_size_type) relsz * o->reloc_count)) | |
252b5132 RH |
1070 | goto error_return; |
1071 | } | |
1072 | ||
1073 | free (external_relocs); | |
1074 | external_relocs = NULL; | |
1075 | } | |
1076 | ||
1077 | /* Free up the section information. */ | |
1078 | if (finfo.section_info != NULL) | |
1079 | { | |
1080 | unsigned int i; | |
1081 | ||
1082 | for (i = 0; i < abfd->section_count; i++) | |
1083 | { | |
1084 | if (finfo.section_info[i].relocs != NULL) | |
1085 | free (finfo.section_info[i].relocs); | |
1086 | if (finfo.section_info[i].rel_hashes != NULL) | |
1087 | free (finfo.section_info[i].rel_hashes); | |
1088 | } | |
1089 | free (finfo.section_info); | |
1090 | finfo.section_info = NULL; | |
1091 | } | |
1092 | ||
1093 | /* If we have optimized stabs strings, output them. */ | |
1094 | if (coff_hash_table (info)->stab_info != NULL) | |
1095 | { | |
1096 | if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info)) | |
1097 | return false; | |
1098 | } | |
1099 | ||
1100 | /* Write out the string table. */ | |
1101 | if (obj_raw_syment_count (abfd) != 0 || long_section_names) | |
1102 | { | |
dc810e39 AM |
1103 | file_ptr pos; |
1104 | ||
1105 | pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz; | |
1106 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
252b5132 RH |
1107 | return false; |
1108 | ||
1109 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 AM |
1110 | H_PUT_32 (abfd, |
1111 | _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE, | |
1112 | strbuf); | |
252b5132 | 1113 | #else |
dc810e39 | 1114 | #error Change H_PUT_32 above |
252b5132 RH |
1115 | #endif |
1116 | ||
dc810e39 AM |
1117 | if (bfd_bwrite (strbuf, (bfd_size_type) STRING_SIZE_SIZE, abfd) |
1118 | != STRING_SIZE_SIZE) | |
252b5132 RH |
1119 | return false; |
1120 | ||
1121 | if (! _bfd_stringtab_emit (abfd, finfo.strtab)) | |
1122 | return false; | |
d71f672e PB |
1123 | |
1124 | obj_coff_strings_written (abfd) = true; | |
252b5132 RH |
1125 | } |
1126 | ||
1127 | _bfd_stringtab_free (finfo.strtab); | |
1128 | ||
1129 | /* Setting bfd_get_symcount to 0 will cause write_object_contents to | |
1130 | not try to write out the symbols. */ | |
1131 | bfd_get_symcount (abfd) = 0; | |
1132 | ||
1133 | return true; | |
1134 | ||
1135 | error_return: | |
1136 | if (debug_merge_allocated) | |
1137 | coff_debug_merge_hash_table_free (&finfo.debug_merge); | |
1138 | if (finfo.strtab != NULL) | |
1139 | _bfd_stringtab_free (finfo.strtab); | |
1140 | if (finfo.section_info != NULL) | |
1141 | { | |
1142 | unsigned int i; | |
1143 | ||
1144 | for (i = 0; i < abfd->section_count; i++) | |
1145 | { | |
1146 | if (finfo.section_info[i].relocs != NULL) | |
1147 | free (finfo.section_info[i].relocs); | |
1148 | if (finfo.section_info[i].rel_hashes != NULL) | |
1149 | free (finfo.section_info[i].rel_hashes); | |
1150 | } | |
1151 | free (finfo.section_info); | |
1152 | } | |
1153 | if (finfo.internal_syms != NULL) | |
1154 | free (finfo.internal_syms); | |
1155 | if (finfo.sec_ptrs != NULL) | |
1156 | free (finfo.sec_ptrs); | |
1157 | if (finfo.sym_indices != NULL) | |
1158 | free (finfo.sym_indices); | |
1159 | if (finfo.outsyms != NULL) | |
1160 | free (finfo.outsyms); | |
1161 | if (finfo.linenos != NULL) | |
1162 | free (finfo.linenos); | |
1163 | if (finfo.contents != NULL) | |
1164 | free (finfo.contents); | |
1165 | if (finfo.external_relocs != NULL) | |
1166 | free (finfo.external_relocs); | |
1167 | if (finfo.internal_relocs != NULL) | |
1168 | free (finfo.internal_relocs); | |
1169 | if (external_relocs != NULL) | |
1170 | free (external_relocs); | |
1171 | return false; | |
1172 | } | |
1173 | ||
1174 | /* parse out a -heap <reserved>,<commit> line */ | |
1175 | ||
1176 | static char * | |
1177 | dores_com (ptr, output_bfd, heap) | |
1178 | char *ptr; | |
1179 | bfd *output_bfd; | |
1180 | int heap; | |
1181 | { | |
244148ad | 1182 | if (coff_data(output_bfd)->pe) |
252b5132 RH |
1183 | { |
1184 | int val = strtoul (ptr, &ptr, 0); | |
1185 | if (heap) | |
dc810e39 | 1186 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve = val; |
252b5132 | 1187 | else |
dc810e39 | 1188 | pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve = val; |
252b5132 | 1189 | |
244148ad | 1190 | if (ptr[0] == ',') |
252b5132 | 1191 | { |
dc810e39 | 1192 | val = strtoul (ptr+1, &ptr, 0); |
252b5132 | 1193 | if (heap) |
dc810e39 | 1194 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit = val; |
252b5132 | 1195 | else |
dc810e39 | 1196 | pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit = val; |
252b5132 RH |
1197 | } |
1198 | } | |
1199 | return ptr; | |
1200 | } | |
1201 | ||
1202 | static char *get_name(ptr, dst) | |
1203 | char *ptr; | |
1204 | char **dst; | |
1205 | { | |
1206 | while (*ptr == ' ') | |
1207 | ptr++; | |
1208 | *dst = ptr; | |
1209 | while (*ptr && *ptr != ' ') | |
1210 | ptr++; | |
1211 | *ptr = 0; | |
1212 | return ptr+1; | |
1213 | } | |
1214 | ||
1215 | /* Process any magic embedded commands in a section called .drectve */ | |
244148ad | 1216 | |
252b5132 RH |
1217 | static int |
1218 | process_embedded_commands (output_bfd, info, abfd) | |
1219 | bfd *output_bfd; | |
5f771d47 | 1220 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1221 | bfd *abfd; |
1222 | { | |
1223 | asection *sec = bfd_get_section_by_name (abfd, ".drectve"); | |
1224 | char *s; | |
1225 | char *e; | |
1226 | char *copy; | |
244148ad | 1227 | if (!sec) |
252b5132 | 1228 | return 1; |
244148ad | 1229 | |
dc810e39 | 1230 | copy = bfd_malloc (sec->_raw_size); |
244148ad | 1231 | if (!copy) |
252b5132 | 1232 | return 0; |
dc810e39 | 1233 | if (! bfd_get_section_contents(abfd, sec, copy, (bfd_vma) 0, sec->_raw_size)) |
252b5132 RH |
1234 | { |
1235 | free (copy); | |
1236 | return 0; | |
1237 | } | |
1238 | e = copy + sec->_raw_size; | |
244148ad | 1239 | for (s = copy; s < e ; ) |
252b5132 RH |
1240 | { |
1241 | if (s[0]!= '-') { | |
1242 | s++; | |
1243 | continue; | |
1244 | } | |
1245 | if (strncmp (s,"-attr", 5) == 0) | |
1246 | { | |
1247 | char *name; | |
1248 | char *attribs; | |
1249 | asection *asec; | |
1250 | ||
1251 | int loop = 1; | |
1252 | int had_write = 0; | |
1253 | int had_read = 0; | |
1254 | int had_exec= 0; | |
1255 | int had_shared= 0; | |
1256 | s += 5; | |
1257 | s = get_name(s, &name); | |
1258 | s = get_name(s, &attribs); | |
1259 | while (loop) { | |
244148ad | 1260 | switch (*attribs++) |
252b5132 RH |
1261 | { |
1262 | case 'W': | |
1263 | had_write = 1; | |
1264 | break; | |
1265 | case 'R': | |
1266 | had_read = 1; | |
1267 | break; | |
1268 | case 'S': | |
1269 | had_shared = 1; | |
1270 | break; | |
1271 | case 'X': | |
1272 | had_exec = 1; | |
1273 | break; | |
1274 | default: | |
1275 | loop = 0; | |
1276 | } | |
1277 | } | |
1278 | asec = bfd_get_section_by_name (abfd, name); | |
1279 | if (asec) { | |
1280 | if (had_exec) | |
1281 | asec->flags |= SEC_CODE; | |
1282 | if (!had_write) | |
1283 | asec->flags |= SEC_READONLY; | |
1284 | } | |
1285 | } | |
1286 | else if (strncmp (s,"-heap", 5) == 0) | |
1287 | { | |
1288 | s = dores_com (s+5, output_bfd, 1); | |
1289 | } | |
1290 | else if (strncmp (s,"-stack", 6) == 0) | |
1291 | { | |
1292 | s = dores_com (s+6, output_bfd, 0); | |
1293 | } | |
244148ad | 1294 | else |
252b5132 RH |
1295 | s++; |
1296 | } | |
1297 | free (copy); | |
1298 | return 1; | |
1299 | } | |
1300 | ||
1301 | /* Place a marker against all symbols which are used by relocations. | |
1302 | This marker can be picked up by the 'do we skip this symbol ?' | |
1303 | loop in _bfd_coff_link_input_bfd() and used to prevent skipping | |
244148ad | 1304 | that symbol. |
252b5132 RH |
1305 | */ |
1306 | ||
1307 | static void | |
1308 | mark_relocs (finfo, input_bfd) | |
1309 | struct coff_final_link_info * finfo; | |
1310 | bfd * input_bfd; | |
1311 | { | |
1312 | asection * a; | |
1313 | ||
1314 | if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0) | |
1315 | return; | |
244148ad | 1316 | |
252b5132 RH |
1317 | for (a = input_bfd->sections; a != (asection *) NULL; a = a->next) |
1318 | { | |
1319 | struct internal_reloc * internal_relocs; | |
1320 | struct internal_reloc * irel; | |
1321 | struct internal_reloc * irelend; | |
1322 | ||
252b5132 RH |
1323 | if ((a->flags & SEC_RELOC) == 0 || a->reloc_count < 1) |
1324 | continue; | |
1325 | ||
1326 | /* Read in the relocs. */ | |
1327 | internal_relocs = _bfd_coff_read_internal_relocs | |
1328 | (input_bfd, a, false, | |
1329 | finfo->external_relocs, | |
1330 | finfo->info->relocateable, | |
1331 | (finfo->info->relocateable | |
1332 | ? (finfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count) | |
1333 | : finfo->internal_relocs) | |
1334 | ); | |
244148ad | 1335 | |
252b5132 RH |
1336 | if (internal_relocs == NULL) |
1337 | continue; | |
1338 | ||
1339 | irel = internal_relocs; | |
1340 | irelend = irel + a->reloc_count; | |
1341 | ||
1342 | /* Place a mark in the sym_indices array (whose entries have | |
1343 | been initialised to 0) for all of the symbols that are used | |
1344 | in the relocation table. This will then be picked up in the | |
1345 | skip/don't pass */ | |
244148ad | 1346 | |
252b5132 RH |
1347 | for (; irel < irelend; irel++) |
1348 | { | |
1349 | finfo->sym_indices[ irel->r_symndx ] = -1; | |
1350 | } | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | /* Link an input file into the linker output file. This function | |
1355 | handles all the sections and relocations of the input file at once. */ | |
1356 | ||
1357 | boolean | |
1358 | _bfd_coff_link_input_bfd (finfo, input_bfd) | |
1359 | struct coff_final_link_info *finfo; | |
1360 | bfd *input_bfd; | |
1361 | { | |
b2d638c7 ILT |
1362 | unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask; |
1363 | unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft; | |
1364 | #if 0 | |
1365 | unsigned int n_btmask = coff_data (input_bfd)->local_n_btmask; | |
1366 | #endif | |
252b5132 RH |
1367 | boolean (*adjust_symndx) PARAMS ((bfd *, struct bfd_link_info *, bfd *, |
1368 | asection *, struct internal_reloc *, | |
1369 | boolean *)); | |
1370 | bfd *output_bfd; | |
1371 | const char *strings; | |
1372 | bfd_size_type syment_base; | |
252b5132 RH |
1373 | boolean copy, hash; |
1374 | bfd_size_type isymesz; | |
1375 | bfd_size_type osymesz; | |
1376 | bfd_size_type linesz; | |
1377 | bfd_byte *esym; | |
1378 | bfd_byte *esym_end; | |
1379 | struct internal_syment *isymp; | |
1380 | asection **secpp; | |
1381 | long *indexp; | |
1382 | unsigned long output_index; | |
1383 | bfd_byte *outsym; | |
1384 | struct coff_link_hash_entry **sym_hash; | |
1385 | asection *o; | |
1386 | ||
1387 | /* Move all the symbols to the output file. */ | |
1388 | ||
1389 | output_bfd = finfo->output_bfd; | |
252b5132 RH |
1390 | strings = NULL; |
1391 | syment_base = obj_raw_syment_count (output_bfd); | |
1392 | isymesz = bfd_coff_symesz (input_bfd); | |
1393 | osymesz = bfd_coff_symesz (output_bfd); | |
1394 | linesz = bfd_coff_linesz (input_bfd); | |
1395 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
1396 | ||
252b5132 RH |
1397 | copy = false; |
1398 | if (! finfo->info->keep_memory) | |
1399 | copy = true; | |
1400 | hash = true; | |
1401 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
1402 | hash = false; | |
1403 | ||
1404 | if (! _bfd_coff_get_external_symbols (input_bfd)) | |
1405 | return false; | |
1406 | ||
1407 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1408 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1409 | isymp = finfo->internal_syms; | |
1410 | secpp = finfo->sec_ptrs; | |
1411 | indexp = finfo->sym_indices; | |
1412 | output_index = syment_base; | |
1413 | outsym = finfo->outsyms; | |
1414 | ||
1415 | if (coff_data (output_bfd)->pe) | |
1416 | { | |
1417 | if (! process_embedded_commands (output_bfd, finfo->info, input_bfd)) | |
1418 | return false; | |
1419 | } | |
1420 | ||
1421 | /* If we are going to perform relocations and also strip/discard some symbols | |
1422 | then we must make sure that we do not strip/discard those symbols that are | |
1423 | going to be involved in the relocations */ | |
1424 | if (( finfo->info->strip != strip_none | |
1425 | || finfo->info->discard != discard_none) | |
1426 | && finfo->info->relocateable) | |
1427 | { | |
1428 | /* mark the symbol array as 'not-used' */ | |
244148ad KH |
1429 | memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp); |
1430 | ||
252b5132 RH |
1431 | mark_relocs (finfo, input_bfd); |
1432 | } | |
1433 | ||
1434 | while (esym < esym_end) | |
1435 | { | |
1436 | struct internal_syment isym; | |
5d54c628 | 1437 | enum coff_symbol_classification classification; |
252b5132 RH |
1438 | boolean skip; |
1439 | boolean global; | |
1440 | boolean dont_skip_symbol; | |
1441 | int add; | |
1442 | ||
1443 | bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp); | |
1444 | ||
1445 | /* Make a copy of *isymp so that the relocate_section function | |
1446 | always sees the original values. This is more reliable than | |
1447 | always recomputing the symbol value even if we are stripping | |
1448 | the symbol. */ | |
1449 | isym = *isymp; | |
1450 | ||
5d54c628 ILT |
1451 | classification = bfd_coff_classify_symbol (input_bfd, &isym); |
1452 | switch (classification) | |
252b5132 | 1453 | { |
5d54c628 ILT |
1454 | default: |
1455 | abort (); | |
1456 | case COFF_SYMBOL_GLOBAL: | |
1457 | case COFF_SYMBOL_PE_SECTION: | |
1458 | case COFF_SYMBOL_LOCAL: | |
1459 | *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum); | |
1460 | break; | |
1461 | case COFF_SYMBOL_COMMON: | |
1462 | *secpp = bfd_com_section_ptr; | |
1463 | break; | |
1464 | case COFF_SYMBOL_UNDEFINED: | |
1465 | *secpp = bfd_und_section_ptr; | |
1466 | break; | |
252b5132 RH |
1467 | } |
1468 | ||
1469 | /* Extract the flag indicating if this symbol is used by a | |
1470 | relocation. */ | |
1471 | if ((finfo->info->strip != strip_none | |
1472 | || finfo->info->discard != discard_none) | |
1473 | && finfo->info->relocateable) | |
1474 | dont_skip_symbol = *indexp; | |
1475 | else | |
1476 | dont_skip_symbol = false; | |
244148ad | 1477 | |
252b5132 RH |
1478 | *indexp = -1; |
1479 | ||
1480 | skip = false; | |
1481 | global = false; | |
1482 | add = 1 + isym.n_numaux; | |
1483 | ||
1484 | /* If we are stripping all symbols, we want to skip this one. */ | |
1485 | if (finfo->info->strip == strip_all && ! dont_skip_symbol) | |
1486 | skip = true; | |
1487 | ||
1488 | if (! skip) | |
1489 | { | |
5d54c628 | 1490 | switch (classification) |
252b5132 | 1491 | { |
5d54c628 ILT |
1492 | default: |
1493 | abort (); | |
1494 | case COFF_SYMBOL_GLOBAL: | |
1495 | case COFF_SYMBOL_COMMON: | |
1496 | case COFF_SYMBOL_PE_SECTION: | |
252b5132 RH |
1497 | /* This is a global symbol. Global symbols come at the |
1498 | end of the symbol table, so skip them for now. | |
1499 | Locally defined function symbols, however, are an | |
1500 | exception, and are not moved to the end. */ | |
1501 | global = true; | |
5d54c628 | 1502 | if (! ISFCN (isym.n_type)) |
252b5132 | 1503 | skip = true; |
5d54c628 ILT |
1504 | break; |
1505 | ||
1506 | case COFF_SYMBOL_UNDEFINED: | |
1507 | /* Undefined symbols are left for the end. */ | |
1508 | global = true; | |
1509 | skip = true; | |
1510 | break; | |
1511 | ||
1512 | case COFF_SYMBOL_LOCAL: | |
252b5132 RH |
1513 | /* This is a local symbol. Skip it if we are discarding |
1514 | local symbols. */ | |
1515 | if (finfo->info->discard == discard_all && ! dont_skip_symbol) | |
1516 | skip = true; | |
5d54c628 | 1517 | break; |
252b5132 RH |
1518 | } |
1519 | } | |
1520 | ||
440c4607 NC |
1521 | #ifndef COFF_WITH_PE |
1522 | /* Skip section symbols for sections which are not going to be | |
862517b6 | 1523 | emitted. */ |
440c4607 NC |
1524 | if (!skip |
1525 | && isym.n_sclass == C_STAT | |
1526 | && isym.n_type == T_NULL | |
1527 | && isym.n_numaux > 0) | |
1528 | { | |
862517b6 | 1529 | if ((*secpp)->output_section == bfd_abs_section_ptr) |
440c4607 NC |
1530 | skip = true; |
1531 | } | |
1532 | #endif | |
1533 | ||
252b5132 RH |
1534 | /* If we stripping debugging symbols, and this is a debugging |
1535 | symbol, then skip it. FIXME: gas sets the section to N_ABS | |
1536 | for some types of debugging symbols; I don't know if this is | |
1537 | a bug or not. In any case, we handle it here. */ | |
1538 | if (! skip | |
1539 | && finfo->info->strip == strip_debugger | |
1540 | && ! dont_skip_symbol | |
1541 | && (isym.n_scnum == N_DEBUG | |
1542 | || (isym.n_scnum == N_ABS | |
1543 | && (isym.n_sclass == C_AUTO | |
1544 | || isym.n_sclass == C_REG | |
1545 | || isym.n_sclass == C_MOS | |
1546 | || isym.n_sclass == C_MOE | |
1547 | || isym.n_sclass == C_MOU | |
1548 | || isym.n_sclass == C_ARG | |
1549 | || isym.n_sclass == C_REGPARM | |
1550 | || isym.n_sclass == C_FIELD | |
1551 | || isym.n_sclass == C_EOS)))) | |
1552 | skip = true; | |
1553 | ||
1554 | /* If some symbols are stripped based on the name, work out the | |
1555 | name and decide whether to skip this symbol. */ | |
1556 | if (! skip | |
1557 | && (finfo->info->strip == strip_some | |
1558 | || finfo->info->discard == discard_l)) | |
1559 | { | |
1560 | const char *name; | |
1561 | char buf[SYMNMLEN + 1]; | |
1562 | ||
1563 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1564 | if (name == NULL) | |
1565 | return false; | |
1566 | ||
1567 | if (! dont_skip_symbol | |
1568 | && ((finfo->info->strip == strip_some | |
1569 | && (bfd_hash_lookup (finfo->info->keep_hash, name, false, | |
1570 | false) == NULL)) | |
1571 | || (! global | |
1572 | && finfo->info->discard == discard_l | |
1573 | && bfd_is_local_label_name (input_bfd, name)))) | |
1574 | skip = true; | |
1575 | } | |
1576 | ||
1577 | /* If this is an enum, struct, or union tag, see if we have | |
1578 | already output an identical type. */ | |
1579 | if (! skip | |
1580 | && (finfo->output_bfd->flags & BFD_TRADITIONAL_FORMAT) == 0 | |
1581 | && (isym.n_sclass == C_ENTAG | |
1582 | || isym.n_sclass == C_STRTAG | |
1583 | || isym.n_sclass == C_UNTAG) | |
1584 | && isym.n_numaux == 1) | |
1585 | { | |
1586 | const char *name; | |
1587 | char buf[SYMNMLEN + 1]; | |
1588 | struct coff_debug_merge_hash_entry *mh; | |
1589 | struct coff_debug_merge_type *mt; | |
1590 | union internal_auxent aux; | |
1591 | struct coff_debug_merge_element **epp; | |
1592 | bfd_byte *esl, *eslend; | |
1593 | struct internal_syment *islp; | |
dc810e39 | 1594 | bfd_size_type amt; |
252b5132 RH |
1595 | |
1596 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1597 | if (name == NULL) | |
1598 | return false; | |
1599 | ||
1600 | /* Ignore fake names invented by compiler; treat them all as | |
1601 | the same name. */ | |
1602 | if (*name == '~' || *name == '.' || *name == '$' | |
1603 | || (*name == bfd_get_symbol_leading_char (input_bfd) | |
1604 | && (name[1] == '~' || name[1] == '.' || name[1] == '$'))) | |
1605 | name = ""; | |
1606 | ||
1607 | mh = coff_debug_merge_hash_lookup (&finfo->debug_merge, name, | |
1608 | true, true); | |
1609 | if (mh == NULL) | |
1610 | return false; | |
1611 | ||
1612 | /* Allocate memory to hold type information. If this turns | |
1613 | out to be a duplicate, we pass this address to | |
1614 | bfd_release. */ | |
dc810e39 AM |
1615 | amt = sizeof (struct coff_debug_merge_type); |
1616 | mt = (struct coff_debug_merge_type *) bfd_alloc (input_bfd, amt); | |
252b5132 RH |
1617 | if (mt == NULL) |
1618 | return false; | |
1619 | mt->class = isym.n_sclass; | |
1620 | ||
1621 | /* Pick up the aux entry, which points to the end of the tag | |
1622 | entries. */ | |
1623 | bfd_coff_swap_aux_in (input_bfd, (PTR) (esym + isymesz), | |
1624 | isym.n_type, isym.n_sclass, 0, isym.n_numaux, | |
1625 | (PTR) &aux); | |
1626 | ||
1627 | /* Gather the elements. */ | |
1628 | epp = &mt->elements; | |
1629 | mt->elements = NULL; | |
1630 | islp = isymp + 2; | |
1631 | esl = esym + 2 * isymesz; | |
1632 | eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd) | |
1633 | + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz); | |
1634 | while (esl < eslend) | |
1635 | { | |
1636 | const char *elename; | |
1637 | char elebuf[SYMNMLEN + 1]; | |
00692651 | 1638 | char *name_copy; |
252b5132 RH |
1639 | |
1640 | bfd_coff_swap_sym_in (input_bfd, (PTR) esl, (PTR) islp); | |
1641 | ||
dc810e39 | 1642 | amt = sizeof (struct coff_debug_merge_element); |
252b5132 | 1643 | *epp = ((struct coff_debug_merge_element *) |
dc810e39 | 1644 | bfd_alloc (input_bfd, amt)); |
252b5132 RH |
1645 | if (*epp == NULL) |
1646 | return false; | |
1647 | ||
1648 | elename = _bfd_coff_internal_syment_name (input_bfd, islp, | |
1649 | elebuf); | |
1650 | if (elename == NULL) | |
1651 | return false; | |
1652 | ||
dc810e39 AM |
1653 | amt = strlen (elename) + 1; |
1654 | name_copy = (char *) bfd_alloc (input_bfd, amt); | |
00692651 | 1655 | if (name_copy == NULL) |
252b5132 | 1656 | return false; |
00692651 | 1657 | strcpy (name_copy, elename); |
252b5132 | 1658 | |
00692651 | 1659 | (*epp)->name = name_copy; |
252b5132 RH |
1660 | (*epp)->type = islp->n_type; |
1661 | (*epp)->tagndx = 0; | |
1662 | if (islp->n_numaux >= 1 | |
1663 | && islp->n_type != T_NULL | |
1664 | && islp->n_sclass != C_EOS) | |
1665 | { | |
1666 | union internal_auxent eleaux; | |
1667 | long indx; | |
1668 | ||
1669 | bfd_coff_swap_aux_in (input_bfd, (PTR) (esl + isymesz), | |
1670 | islp->n_type, islp->n_sclass, 0, | |
1671 | islp->n_numaux, (PTR) &eleaux); | |
1672 | indx = eleaux.x_sym.x_tagndx.l; | |
1673 | ||
1674 | /* FIXME: If this tagndx entry refers to a symbol | |
1675 | defined later in this file, we just ignore it. | |
1676 | Handling this correctly would be tedious, and may | |
1677 | not be required. */ | |
1678 | ||
1679 | if (indx > 0 | |
1680 | && (indx | |
1681 | < ((esym - | |
1682 | (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1683 | / (long) isymesz))) | |
1684 | { | |
1685 | (*epp)->tagndx = finfo->sym_indices[indx]; | |
1686 | if ((*epp)->tagndx < 0) | |
1687 | (*epp)->tagndx = 0; | |
1688 | } | |
1689 | } | |
1690 | epp = &(*epp)->next; | |
1691 | *epp = NULL; | |
1692 | ||
1693 | esl += (islp->n_numaux + 1) * isymesz; | |
1694 | islp += islp->n_numaux + 1; | |
1695 | } | |
1696 | ||
1697 | /* See if we already have a definition which matches this | |
1698 | type. We always output the type if it has no elements, | |
1699 | for simplicity. */ | |
1700 | if (mt->elements == NULL) | |
1701 | bfd_release (input_bfd, (PTR) mt); | |
1702 | else | |
1703 | { | |
1704 | struct coff_debug_merge_type *mtl; | |
1705 | ||
1706 | for (mtl = mh->types; mtl != NULL; mtl = mtl->next) | |
1707 | { | |
1708 | struct coff_debug_merge_element *me, *mel; | |
1709 | ||
1710 | if (mtl->class != mt->class) | |
1711 | continue; | |
1712 | ||
1713 | for (me = mt->elements, mel = mtl->elements; | |
1714 | me != NULL && mel != NULL; | |
1715 | me = me->next, mel = mel->next) | |
1716 | { | |
1717 | if (strcmp (me->name, mel->name) != 0 | |
1718 | || me->type != mel->type | |
1719 | || me->tagndx != mel->tagndx) | |
1720 | break; | |
1721 | } | |
1722 | ||
1723 | if (me == NULL && mel == NULL) | |
1724 | break; | |
1725 | } | |
1726 | ||
1727 | if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base) | |
1728 | { | |
1729 | /* This is the first definition of this type. */ | |
1730 | mt->indx = output_index; | |
1731 | mt->next = mh->types; | |
1732 | mh->types = mt; | |
1733 | } | |
1734 | else | |
1735 | { | |
1736 | /* This is a redefinition which can be merged. */ | |
1737 | bfd_release (input_bfd, (PTR) mt); | |
1738 | *indexp = mtl->indx; | |
1739 | add = (eslend - esym) / isymesz; | |
1740 | skip = true; | |
1741 | } | |
1742 | } | |
1743 | } | |
1744 | ||
1745 | /* We now know whether we are to skip this symbol or not. */ | |
1746 | if (! skip) | |
1747 | { | |
1748 | /* Adjust the symbol in order to output it. */ | |
1749 | ||
1750 | if (isym._n._n_n._n_zeroes == 0 | |
1751 | && isym._n._n_n._n_offset != 0) | |
1752 | { | |
1753 | const char *name; | |
1754 | bfd_size_type indx; | |
1755 | ||
1756 | /* This symbol has a long name. Enter it in the string | |
1757 | table we are building. Note that we do not check | |
1758 | bfd_coff_symname_in_debug. That is only true for | |
1759 | XCOFF, and XCOFF requires different linking code | |
1760 | anyhow. */ | |
1761 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, | |
1762 | (char *) NULL); | |
1763 | if (name == NULL) | |
1764 | return false; | |
1765 | indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); | |
1766 | if (indx == (bfd_size_type) -1) | |
1767 | return false; | |
1768 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
1769 | } | |
1770 | ||
8add8e30 | 1771 | switch (isym.n_sclass) |
252b5132 | 1772 | { |
8add8e30 ILT |
1773 | case C_AUTO: |
1774 | case C_MOS: | |
1775 | case C_EOS: | |
1776 | case C_MOE: | |
1777 | case C_MOU: | |
1778 | case C_UNTAG: | |
1779 | case C_STRTAG: | |
1780 | case C_ENTAG: | |
1781 | case C_TPDEF: | |
1782 | case C_ARG: | |
1783 | case C_USTATIC: | |
1784 | case C_REG: | |
1785 | case C_REGPARM: | |
1786 | case C_FIELD: | |
1787 | /* The symbol value should not be modified. */ | |
1788 | break; | |
1789 | ||
1790 | case C_FCN: | |
1791 | if (obj_pe (input_bfd) | |
1792 | && strcmp (isym.n_name, ".bf") != 0 | |
1793 | && isym.n_scnum > 0) | |
1794 | { | |
1795 | /* For PE, .lf and .ef get their value left alone, | |
1796 | while .bf gets relocated. However, they all have | |
1797 | "real" section numbers, and need to be moved into | |
1798 | the new section. */ | |
1799 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1800 | break; | |
1801 | } | |
1802 | /* Fall through. */ | |
1803 | default: | |
1804 | case C_LABEL: /* Not completely sure about these 2 */ | |
1805 | case C_EXTDEF: | |
1806 | case C_BLOCK: | |
1807 | case C_EFCN: | |
1808 | case C_NULL: | |
1809 | case C_EXT: | |
1810 | case C_STAT: | |
1811 | case C_SECTION: | |
1812 | case C_NT_WEAK: | |
1813 | /* Compute new symbol location. */ | |
1814 | if (isym.n_scnum > 0) | |
1815 | { | |
1816 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1817 | isym.n_value += (*secpp)->output_offset; | |
1818 | if (! obj_pe (input_bfd)) | |
1819 | isym.n_value -= (*secpp)->vma; | |
1820 | if (! obj_pe (finfo->output_bfd)) | |
1821 | isym.n_value += (*secpp)->output_section->vma; | |
1822 | } | |
1823 | break; | |
1824 | ||
1825 | case C_FILE: | |
1826 | /* The value of a C_FILE symbol is the symbol index of | |
1827 | the next C_FILE symbol. The value of the last C_FILE | |
1828 | symbol is the symbol index to the first external | |
1829 | symbol (actually, coff_renumber_symbols does not get | |
1830 | this right--it just sets the value of the last C_FILE | |
1831 | symbol to zero--and nobody has ever complained about | |
1832 | it). We try to get this right, below, just before we | |
1833 | write the symbols out, but in the general case we may | |
1834 | have to write the symbol out twice. */ | |
252b5132 | 1835 | |
252b5132 | 1836 | if (finfo->last_file_index != -1 |
cea4409c | 1837 | && finfo->last_file.n_value != (bfd_vma) output_index) |
252b5132 | 1838 | { |
8add8e30 ILT |
1839 | /* We must correct the value of the last C_FILE |
1840 | entry. */ | |
252b5132 RH |
1841 | finfo->last_file.n_value = output_index; |
1842 | if ((bfd_size_type) finfo->last_file_index >= syment_base) | |
1843 | { | |
1844 | /* The last C_FILE symbol is in this input file. */ | |
1845 | bfd_coff_swap_sym_out (output_bfd, | |
1846 | (PTR) &finfo->last_file, | |
1847 | (PTR) (finfo->outsyms | |
1848 | + ((finfo->last_file_index | |
1849 | - syment_base) | |
1850 | * osymesz))); | |
1851 | } | |
1852 | else | |
1853 | { | |
dc810e39 AM |
1854 | file_ptr pos; |
1855 | ||
252b5132 RH |
1856 | /* We have already written out the last C_FILE |
1857 | symbol. We need to write it out again. We | |
1858 | borrow *outsym temporarily. */ | |
1859 | bfd_coff_swap_sym_out (output_bfd, | |
1860 | (PTR) &finfo->last_file, | |
1861 | (PTR) outsym); | |
dc810e39 AM |
1862 | pos = obj_sym_filepos (output_bfd); |
1863 | pos += finfo->last_file_index * osymesz; | |
1864 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
1865 | || bfd_bwrite (outsym, osymesz, output_bfd) != osymesz) | |
252b5132 RH |
1866 | return false; |
1867 | } | |
1868 | } | |
1869 | ||
1870 | finfo->last_file_index = output_index; | |
1871 | finfo->last_file = isym; | |
8add8e30 | 1872 | break; |
252b5132 RH |
1873 | } |
1874 | ||
1875 | /* If doing task linking, convert normal global function symbols to | |
e4202681 NC |
1876 | static functions. */ |
1877 | if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym)) | |
252b5132 RH |
1878 | isym.n_sclass = C_STAT; |
1879 | ||
1880 | /* Output the symbol. */ | |
1881 | ||
1882 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); | |
1883 | ||
1884 | *indexp = output_index; | |
1885 | ||
1886 | if (global) | |
1887 | { | |
1888 | long indx; | |
1889 | struct coff_link_hash_entry *h; | |
1890 | ||
1891 | indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1892 | / isymesz); | |
1893 | h = obj_coff_sym_hashes (input_bfd)[indx]; | |
1894 | if (h == NULL) | |
1895 | { | |
1896 | /* This can happen if there were errors earlier in | |
1897 | the link. */ | |
1898 | bfd_set_error (bfd_error_bad_value); | |
1899 | return false; | |
1900 | } | |
1901 | h->indx = output_index; | |
1902 | } | |
1903 | ||
1904 | output_index += add; | |
1905 | outsym += add * osymesz; | |
1906 | } | |
1907 | ||
1908 | esym += add * isymesz; | |
1909 | isymp += add; | |
1910 | ++secpp; | |
1911 | ++indexp; | |
1912 | for (--add; add > 0; --add) | |
1913 | { | |
1914 | *secpp++ = NULL; | |
1915 | *indexp++ = -1; | |
1916 | } | |
1917 | } | |
1918 | ||
1919 | /* Fix up the aux entries. This must be done in a separate pass, | |
1920 | because we don't know the correct symbol indices until we have | |
1921 | already decided which symbols we are going to keep. */ | |
1922 | ||
1923 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1924 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1925 | isymp = finfo->internal_syms; | |
1926 | indexp = finfo->sym_indices; | |
1927 | sym_hash = obj_coff_sym_hashes (input_bfd); | |
1928 | outsym = finfo->outsyms; | |
1929 | while (esym < esym_end) | |
1930 | { | |
1931 | int add; | |
1932 | ||
1933 | add = 1 + isymp->n_numaux; | |
1934 | ||
1935 | if ((*indexp < 0 | |
1936 | || (bfd_size_type) *indexp < syment_base) | |
1937 | && (*sym_hash == NULL | |
1938 | || (*sym_hash)->auxbfd != input_bfd)) | |
1939 | esym += add * isymesz; | |
1940 | else | |
1941 | { | |
1942 | struct coff_link_hash_entry *h; | |
1943 | int i; | |
1944 | ||
1945 | h = NULL; | |
1946 | if (*indexp < 0) | |
1947 | { | |
1948 | h = *sym_hash; | |
1949 | ||
1950 | /* The m68k-motorola-sysv assembler will sometimes | |
1951 | generate two symbols with the same name, but only one | |
1952 | will have aux entries. */ | |
1953 | BFD_ASSERT (isymp->n_numaux == 0 | |
1954 | || h->numaux == isymp->n_numaux); | |
1955 | } | |
1956 | ||
1957 | esym += isymesz; | |
1958 | ||
1959 | if (h == NULL) | |
1960 | outsym += osymesz; | |
1961 | ||
1962 | /* Handle the aux entries. This handling is based on | |
1963 | coff_pointerize_aux. I don't know if it always correct. */ | |
1964 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) | |
1965 | { | |
1966 | union internal_auxent aux; | |
1967 | union internal_auxent *auxp; | |
1968 | ||
1969 | if (h != NULL) | |
1970 | auxp = h->aux + i; | |
1971 | else | |
1972 | { | |
1973 | bfd_coff_swap_aux_in (input_bfd, (PTR) esym, isymp->n_type, | |
1974 | isymp->n_sclass, i, isymp->n_numaux, | |
1975 | (PTR) &aux); | |
1976 | auxp = &aux; | |
1977 | } | |
1978 | ||
1979 | if (isymp->n_sclass == C_FILE) | |
1980 | { | |
1981 | /* If this is a long filename, we must put it in the | |
1982 | string table. */ | |
1983 | if (auxp->x_file.x_n.x_zeroes == 0 | |
1984 | && auxp->x_file.x_n.x_offset != 0) | |
1985 | { | |
1986 | const char *filename; | |
1987 | bfd_size_type indx; | |
1988 | ||
1989 | BFD_ASSERT (auxp->x_file.x_n.x_offset | |
1990 | >= STRING_SIZE_SIZE); | |
1991 | if (strings == NULL) | |
1992 | { | |
1993 | strings = _bfd_coff_read_string_table (input_bfd); | |
1994 | if (strings == NULL) | |
1995 | return false; | |
1996 | } | |
1997 | filename = strings + auxp->x_file.x_n.x_offset; | |
1998 | indx = _bfd_stringtab_add (finfo->strtab, filename, | |
1999 | hash, copy); | |
2000 | if (indx == (bfd_size_type) -1) | |
2001 | return false; | |
2002 | auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; | |
2003 | } | |
2004 | } | |
2005 | else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) | |
2006 | { | |
2007 | unsigned long indx; | |
2008 | ||
2009 | if (ISFCN (isymp->n_type) | |
2010 | || ISTAG (isymp->n_sclass) | |
2011 | || isymp->n_sclass == C_BLOCK | |
2012 | || isymp->n_sclass == C_FCN) | |
2013 | { | |
2014 | indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l; | |
2015 | if (indx > 0 | |
2016 | && indx < obj_raw_syment_count (input_bfd)) | |
2017 | { | |
2018 | /* We look forward through the symbol for | |
2019 | the index of the next symbol we are going | |
2020 | to include. I don't know if this is | |
2021 | entirely right. */ | |
2022 | while ((finfo->sym_indices[indx] < 0 | |
2023 | || ((bfd_size_type) finfo->sym_indices[indx] | |
2024 | < syment_base)) | |
2025 | && indx < obj_raw_syment_count (input_bfd)) | |
2026 | ++indx; | |
2027 | if (indx >= obj_raw_syment_count (input_bfd)) | |
2028 | indx = output_index; | |
2029 | else | |
2030 | indx = finfo->sym_indices[indx]; | |
2031 | auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx; | |
2032 | } | |
2033 | } | |
2034 | ||
2035 | indx = auxp->x_sym.x_tagndx.l; | |
2036 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) | |
2037 | { | |
2038 | long symindx; | |
2039 | ||
2040 | symindx = finfo->sym_indices[indx]; | |
2041 | if (symindx < 0) | |
2042 | auxp->x_sym.x_tagndx.l = 0; | |
2043 | else | |
2044 | auxp->x_sym.x_tagndx.l = symindx; | |
2045 | } | |
2046 | ||
2047 | /* The .bf symbols are supposed to be linked through | |
2048 | the endndx field. We need to carry this list | |
2049 | across object files. */ | |
2050 | if (i == 0 | |
2051 | && h == NULL | |
2052 | && isymp->n_sclass == C_FCN | |
2053 | && (isymp->_n._n_n._n_zeroes != 0 | |
2054 | || isymp->_n._n_n._n_offset == 0) | |
2055 | && isymp->_n._n_name[0] == '.' | |
2056 | && isymp->_n._n_name[1] == 'b' | |
2057 | && isymp->_n._n_name[2] == 'f' | |
2058 | && isymp->_n._n_name[3] == '\0') | |
2059 | { | |
2060 | if (finfo->last_bf_index != -1) | |
2061 | { | |
2062 | finfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
2063 | *indexp; | |
2064 | ||
2065 | if ((bfd_size_type) finfo->last_bf_index | |
2066 | >= syment_base) | |
2067 | { | |
2068 | PTR auxout; | |
2069 | ||
2070 | /* The last .bf symbol is in this input | |
2071 | file. This will only happen if the | |
2072 | assembler did not set up the .bf | |
2073 | endndx symbols correctly. */ | |
2074 | auxout = (PTR) (finfo->outsyms | |
2075 | + ((finfo->last_bf_index | |
2076 | - syment_base) | |
2077 | * osymesz)); | |
2078 | bfd_coff_swap_aux_out (output_bfd, | |
2079 | (PTR) &finfo->last_bf, | |
2080 | isymp->n_type, | |
2081 | isymp->n_sclass, | |
2082 | 0, isymp->n_numaux, | |
2083 | auxout); | |
2084 | } | |
2085 | else | |
2086 | { | |
dc810e39 AM |
2087 | file_ptr pos; |
2088 | ||
252b5132 RH |
2089 | /* We have already written out the last |
2090 | .bf aux entry. We need to write it | |
2091 | out again. We borrow *outsym | |
2092 | temporarily. FIXME: This case should | |
2093 | be made faster. */ | |
2094 | bfd_coff_swap_aux_out (output_bfd, | |
2095 | (PTR) &finfo->last_bf, | |
2096 | isymp->n_type, | |
2097 | isymp->n_sclass, | |
2098 | 0, isymp->n_numaux, | |
2099 | (PTR) outsym); | |
dc810e39 AM |
2100 | pos = obj_sym_filepos (output_bfd); |
2101 | pos += finfo->last_bf_index * osymesz; | |
2102 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2103 | || (bfd_bwrite (outsym, osymesz, output_bfd) | |
2104 | != osymesz)) | |
252b5132 RH |
2105 | return false; |
2106 | } | |
2107 | } | |
2108 | ||
2109 | if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0) | |
2110 | finfo->last_bf_index = -1; | |
2111 | else | |
2112 | { | |
2113 | /* The endndx field of this aux entry must | |
2114 | be updated with the symbol number of the | |
2115 | next .bf symbol. */ | |
2116 | finfo->last_bf = *auxp; | |
2117 | finfo->last_bf_index = (((outsym - finfo->outsyms) | |
2118 | / osymesz) | |
2119 | + syment_base); | |
2120 | } | |
2121 | } | |
2122 | } | |
2123 | ||
2124 | if (h == NULL) | |
2125 | { | |
2126 | bfd_coff_swap_aux_out (output_bfd, (PTR) auxp, isymp->n_type, | |
2127 | isymp->n_sclass, i, isymp->n_numaux, | |
2128 | (PTR) outsym); | |
2129 | outsym += osymesz; | |
2130 | } | |
2131 | ||
2132 | esym += isymesz; | |
2133 | } | |
2134 | } | |
2135 | ||
2136 | indexp += add; | |
2137 | isymp += add; | |
2138 | sym_hash += add; | |
2139 | } | |
2140 | ||
2141 | /* Relocate the line numbers, unless we are stripping them. */ | |
2142 | if (finfo->info->strip == strip_none | |
2143 | || finfo->info->strip == strip_some) | |
2144 | { | |
2145 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2146 | { | |
2147 | bfd_vma offset; | |
2148 | bfd_byte *eline; | |
2149 | bfd_byte *elineend; | |
b545f675 ILT |
2150 | bfd_byte *oeline; |
2151 | boolean skipping; | |
dc810e39 AM |
2152 | file_ptr pos; |
2153 | bfd_size_type amt; | |
252b5132 RH |
2154 | |
2155 | /* FIXME: If SEC_HAS_CONTENTS is not for the section, then | |
2156 | build_link_order in ldwrite.c will not have created a | |
2157 | link order, which means that we will not have seen this | |
2158 | input section in _bfd_coff_final_link, which means that | |
2159 | we will not have allocated space for the line numbers of | |
2160 | this section. I don't think line numbers can be | |
2161 | meaningful for a section which does not have | |
2162 | SEC_HAS_CONTENTS set, but, if they do, this must be | |
2163 | changed. */ | |
2164 | if (o->lineno_count == 0 | |
2165 | || (o->output_section->flags & SEC_HAS_CONTENTS) == 0) | |
2166 | continue; | |
2167 | ||
2168 | if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0 | |
dc810e39 | 2169 | || bfd_bread (finfo->linenos, linesz * o->lineno_count, |
252b5132 RH |
2170 | input_bfd) != linesz * o->lineno_count) |
2171 | return false; | |
2172 | ||
2173 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2174 | eline = finfo->linenos; | |
b545f675 | 2175 | oeline = finfo->linenos; |
252b5132 | 2176 | elineend = eline + linesz * o->lineno_count; |
b545f675 | 2177 | skipping = false; |
252b5132 RH |
2178 | for (; eline < elineend; eline += linesz) |
2179 | { | |
2180 | struct internal_lineno iline; | |
2181 | ||
2182 | bfd_coff_swap_lineno_in (input_bfd, (PTR) eline, (PTR) &iline); | |
2183 | ||
2184 | if (iline.l_lnno != 0) | |
2185 | iline.l_addr.l_paddr += offset; | |
2186 | else if (iline.l_addr.l_symndx >= 0 | |
2187 | && ((unsigned long) iline.l_addr.l_symndx | |
2188 | < obj_raw_syment_count (input_bfd))) | |
2189 | { | |
2190 | long indx; | |
2191 | ||
2192 | indx = finfo->sym_indices[iline.l_addr.l_symndx]; | |
2193 | ||
2194 | if (indx < 0) | |
2195 | { | |
2196 | /* These line numbers are attached to a symbol | |
b545f675 ILT |
2197 | which we are stripping. We must discard the |
2198 | line numbers because reading them back with | |
2199 | no associated symbol (or associating them all | |
2200 | with symbol #0) will fail. We can't regain | |
2201 | the space in the output file, but at least | |
2202 | they're dense. */ | |
2203 | skipping = true; | |
252b5132 RH |
2204 | } |
2205 | else | |
2206 | { | |
2207 | struct internal_syment is; | |
2208 | union internal_auxent ia; | |
2209 | ||
2210 | /* Fix up the lnnoptr field in the aux entry of | |
2211 | the symbol. It turns out that we can't do | |
2212 | this when we modify the symbol aux entries, | |
2213 | because gas sometimes screws up the lnnoptr | |
2214 | field and makes it an offset from the start | |
2215 | of the line numbers rather than an absolute | |
2216 | file index. */ | |
2217 | bfd_coff_swap_sym_in (output_bfd, | |
2218 | (PTR) (finfo->outsyms | |
2219 | + ((indx - syment_base) | |
2220 | * osymesz)), | |
2221 | (PTR) &is); | |
2222 | if ((ISFCN (is.n_type) | |
2223 | || is.n_sclass == C_BLOCK) | |
2224 | && is.n_numaux >= 1) | |
2225 | { | |
2226 | PTR auxptr; | |
2227 | ||
2228 | auxptr = (PTR) (finfo->outsyms | |
2229 | + ((indx - syment_base + 1) | |
2230 | * osymesz)); | |
2231 | bfd_coff_swap_aux_in (output_bfd, auxptr, | |
2232 | is.n_type, is.n_sclass, | |
2233 | 0, is.n_numaux, (PTR) &ia); | |
2234 | ia.x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
2235 | (o->output_section->line_filepos | |
2236 | + o->output_section->lineno_count * linesz | |
2237 | + eline - finfo->linenos); | |
2238 | bfd_coff_swap_aux_out (output_bfd, (PTR) &ia, | |
2239 | is.n_type, is.n_sclass, 0, | |
2240 | is.n_numaux, auxptr); | |
2241 | } | |
b545f675 | 2242 | |
60bcf0fa | 2243 | skipping = false; |
252b5132 RH |
2244 | } |
2245 | ||
2246 | iline.l_addr.l_symndx = indx; | |
2247 | } | |
2248 | ||
b545f675 ILT |
2249 | if (!skipping) |
2250 | { | |
2251 | bfd_coff_swap_lineno_out (output_bfd, (PTR) &iline, | |
2252 | (PTR) oeline); | |
2253 | oeline += linesz; | |
2254 | } | |
252b5132 RH |
2255 | } |
2256 | ||
dc810e39 AM |
2257 | pos = o->output_section->line_filepos; |
2258 | pos += o->output_section->lineno_count * linesz; | |
2259 | amt = oeline - finfo->linenos; | |
2260 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2261 | || bfd_bwrite (finfo->linenos, amt, output_bfd) != amt) | |
252b5132 RH |
2262 | return false; |
2263 | ||
dc810e39 | 2264 | o->output_section->lineno_count += amt / linesz; |
252b5132 RH |
2265 | } |
2266 | } | |
2267 | ||
2268 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE | |
2269 | symbol will be the first symbol in the next input file. In the | |
2270 | normal case, this will save us from writing out the C_FILE symbol | |
2271 | again. */ | |
2272 | if (finfo->last_file_index != -1 | |
2273 | && (bfd_size_type) finfo->last_file_index >= syment_base) | |
2274 | { | |
2275 | finfo->last_file.n_value = output_index; | |
2276 | bfd_coff_swap_sym_out (output_bfd, (PTR) &finfo->last_file, | |
2277 | (PTR) (finfo->outsyms | |
2278 | + ((finfo->last_file_index - syment_base) | |
2279 | * osymesz))); | |
2280 | } | |
2281 | ||
2282 | /* Write the modified symbols to the output file. */ | |
2283 | if (outsym > finfo->outsyms) | |
2284 | { | |
dc810e39 AM |
2285 | file_ptr pos; |
2286 | bfd_size_type amt; | |
2287 | ||
2288 | pos = obj_sym_filepos (output_bfd) + syment_base * osymesz; | |
2289 | amt = outsym - finfo->outsyms; | |
2290 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2291 | || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt) | |
252b5132 RH |
2292 | return false; |
2293 | ||
2294 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) | |
2295 | + (outsym - finfo->outsyms) / osymesz) | |
2296 | == output_index); | |
2297 | ||
2298 | obj_raw_syment_count (output_bfd) = output_index; | |
2299 | } | |
2300 | ||
2301 | /* Relocate the contents of each section. */ | |
2302 | adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx; | |
2303 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2304 | { | |
2305 | bfd_byte *contents; | |
2306 | struct coff_section_tdata *secdata; | |
2307 | ||
2308 | if (! o->linker_mark) | |
2309 | { | |
2310 | /* This section was omitted from the link. */ | |
2311 | continue; | |
2312 | } | |
2313 | ||
2314 | if ((o->flags & SEC_HAS_CONTENTS) == 0 | |
2315 | || (o->_raw_size == 0 && (o->flags & SEC_RELOC) == 0)) | |
2316 | { | |
2317 | if ((o->flags & SEC_RELOC) != 0 | |
2318 | && o->reloc_count != 0) | |
2319 | { | |
2320 | ((*_bfd_error_handler) | |
2321 | (_("%s: relocs in section `%s', but it has no contents"), | |
8f615d07 | 2322 | bfd_archive_filename (input_bfd), |
252b5132 RH |
2323 | bfd_get_section_name (input_bfd, o))); |
2324 | bfd_set_error (bfd_error_no_contents); | |
2325 | return false; | |
2326 | } | |
2327 | ||
2328 | continue; | |
2329 | } | |
2330 | ||
2331 | secdata = coff_section_data (input_bfd, o); | |
2332 | if (secdata != NULL && secdata->contents != NULL) | |
2333 | contents = secdata->contents; | |
2334 | else | |
2335 | { | |
2336 | if (! bfd_get_section_contents (input_bfd, o, finfo->contents, | |
2337 | (file_ptr) 0, o->_raw_size)) | |
2338 | return false; | |
2339 | contents = finfo->contents; | |
2340 | } | |
2341 | ||
2342 | if ((o->flags & SEC_RELOC) != 0) | |
2343 | { | |
2344 | int target_index; | |
2345 | struct internal_reloc *internal_relocs; | |
2346 | struct internal_reloc *irel; | |
2347 | ||
2348 | /* Read in the relocs. */ | |
2349 | target_index = o->output_section->target_index; | |
2350 | internal_relocs = (_bfd_coff_read_internal_relocs | |
2351 | (input_bfd, o, false, finfo->external_relocs, | |
2352 | finfo->info->relocateable, | |
2353 | (finfo->info->relocateable | |
2354 | ? (finfo->section_info[target_index].relocs | |
2355 | + o->output_section->reloc_count) | |
2356 | : finfo->internal_relocs))); | |
2357 | if (internal_relocs == NULL) | |
2358 | return false; | |
2359 | ||
2360 | /* Call processor specific code to relocate the section | |
2361 | contents. */ | |
2362 | if (! bfd_coff_relocate_section (output_bfd, finfo->info, | |
2363 | input_bfd, o, | |
2364 | contents, | |
2365 | internal_relocs, | |
2366 | finfo->internal_syms, | |
2367 | finfo->sec_ptrs)) | |
2368 | return false; | |
2369 | ||
2370 | if (finfo->info->relocateable) | |
2371 | { | |
2372 | bfd_vma offset; | |
2373 | struct internal_reloc *irelend; | |
2374 | struct coff_link_hash_entry **rel_hash; | |
2375 | ||
2376 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2377 | irel = internal_relocs; | |
2378 | irelend = irel + o->reloc_count; | |
2379 | rel_hash = (finfo->section_info[target_index].rel_hashes | |
2380 | + o->output_section->reloc_count); | |
2381 | for (; irel < irelend; irel++, rel_hash++) | |
2382 | { | |
2383 | struct coff_link_hash_entry *h; | |
2384 | boolean adjusted; | |
2385 | ||
2386 | *rel_hash = NULL; | |
2387 | ||
2388 | /* Adjust the reloc address and symbol index. */ | |
2389 | ||
2390 | irel->r_vaddr += offset; | |
2391 | ||
2392 | if (irel->r_symndx == -1) | |
2393 | continue; | |
2394 | ||
2395 | if (adjust_symndx) | |
2396 | { | |
2397 | if (! (*adjust_symndx) (output_bfd, finfo->info, | |
2398 | input_bfd, o, irel, | |
2399 | &adjusted)) | |
2400 | return false; | |
2401 | if (adjusted) | |
2402 | continue; | |
2403 | } | |
2404 | ||
2405 | h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx]; | |
2406 | if (h != NULL) | |
2407 | { | |
2408 | /* This is a global symbol. */ | |
2409 | if (h->indx >= 0) | |
2410 | irel->r_symndx = h->indx; | |
2411 | else | |
2412 | { | |
2413 | /* This symbol is being written at the end | |
2414 | of the file, and we do not yet know the | |
2415 | symbol index. We save the pointer to the | |
2416 | hash table entry in the rel_hash list. | |
2417 | We set the indx field to -2 to indicate | |
2418 | that this symbol must not be stripped. */ | |
2419 | *rel_hash = h; | |
2420 | h->indx = -2; | |
2421 | } | |
2422 | } | |
2423 | else | |
2424 | { | |
2425 | long indx; | |
2426 | ||
2427 | indx = finfo->sym_indices[irel->r_symndx]; | |
2428 | if (indx != -1) | |
2429 | irel->r_symndx = indx; | |
2430 | else | |
2431 | { | |
2432 | struct internal_syment *is; | |
2433 | const char *name; | |
2434 | char buf[SYMNMLEN + 1]; | |
2435 | ||
2436 | /* This reloc is against a symbol we are | |
2437 | stripping. This should have been handled | |
2438 | by the 'dont_skip_symbol' code in the while | |
244148ad KH |
2439 | loop at the top of this function. */ |
2440 | ||
252b5132 RH |
2441 | is = finfo->internal_syms + irel->r_symndx; |
2442 | ||
2443 | name = (_bfd_coff_internal_syment_name | |
2444 | (input_bfd, is, buf)); | |
2445 | if (name == NULL) | |
2446 | return false; | |
2447 | ||
2448 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2449 | (finfo->info, name, input_bfd, o, | |
2450 | irel->r_vaddr))) | |
2451 | return false; | |
2452 | } | |
2453 | } | |
2454 | } | |
2455 | ||
2456 | o->output_section->reloc_count += o->reloc_count; | |
2457 | } | |
2458 | } | |
2459 | ||
2460 | /* Write out the modified section contents. */ | |
2461 | if (secdata == NULL || secdata->stab_info == NULL) | |
2462 | { | |
dc810e39 AM |
2463 | file_ptr loc = o->output_offset * bfd_octets_per_byte (output_bfd); |
2464 | bfd_size_type amt = (o->_cooked_size != 0 | |
2465 | ? o->_cooked_size : o->_raw_size); | |
252b5132 | 2466 | if (! bfd_set_section_contents (output_bfd, o->output_section, |
dc810e39 | 2467 | contents, loc, amt)) |
252b5132 RH |
2468 | return false; |
2469 | } | |
2470 | else | |
2471 | { | |
2472 | if (! (_bfd_write_section_stabs | |
2473 | (output_bfd, &coff_hash_table (finfo->info)->stab_info, | |
2474 | o, &secdata->stab_info, contents))) | |
2475 | return false; | |
2476 | } | |
2477 | } | |
2478 | ||
2479 | if (! finfo->info->keep_memory) | |
2480 | { | |
2481 | if (! _bfd_coff_free_symbols (input_bfd)) | |
2482 | return false; | |
2483 | } | |
2484 | ||
2485 | return true; | |
2486 | } | |
2487 | ||
2488 | /* Write out a global symbol. Called via coff_link_hash_traverse. */ | |
2489 | ||
2490 | boolean | |
2491 | _bfd_coff_write_global_sym (h, data) | |
2492 | struct coff_link_hash_entry *h; | |
2493 | PTR data; | |
2494 | { | |
2495 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
2496 | bfd *output_bfd; | |
2497 | struct internal_syment isym; | |
2498 | bfd_size_type symesz; | |
2499 | unsigned int i; | |
dc810e39 | 2500 | file_ptr pos; |
252b5132 RH |
2501 | |
2502 | output_bfd = finfo->output_bfd; | |
2503 | ||
e92d460e AM |
2504 | if (h->root.type == bfd_link_hash_warning) |
2505 | { | |
2506 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2507 | if (h->root.type == bfd_link_hash_new) | |
2508 | return true; | |
2509 | } | |
2510 | ||
252b5132 RH |
2511 | if (h->indx >= 0) |
2512 | return true; | |
2513 | ||
2514 | if (h->indx != -2 | |
2515 | && (finfo->info->strip == strip_all | |
2516 | || (finfo->info->strip == strip_some | |
2517 | && (bfd_hash_lookup (finfo->info->keep_hash, | |
2518 | h->root.root.string, false, false) | |
2519 | == NULL)))) | |
2520 | return true; | |
2521 | ||
2522 | switch (h->root.type) | |
2523 | { | |
2524 | default: | |
2525 | case bfd_link_hash_new: | |
e92d460e | 2526 | case bfd_link_hash_warning: |
252b5132 RH |
2527 | abort (); |
2528 | return false; | |
2529 | ||
2530 | case bfd_link_hash_undefined: | |
2531 | case bfd_link_hash_undefweak: | |
2532 | isym.n_scnum = N_UNDEF; | |
2533 | isym.n_value = 0; | |
2534 | break; | |
2535 | ||
2536 | case bfd_link_hash_defined: | |
2537 | case bfd_link_hash_defweak: | |
2538 | { | |
2539 | asection *sec; | |
2540 | ||
2541 | sec = h->root.u.def.section->output_section; | |
2542 | if (bfd_is_abs_section (sec)) | |
2543 | isym.n_scnum = N_ABS; | |
2544 | else | |
2545 | isym.n_scnum = sec->target_index; | |
2546 | isym.n_value = (h->root.u.def.value | |
2547 | + h->root.u.def.section->output_offset); | |
2548 | if (! obj_pe (finfo->output_bfd)) | |
2549 | isym.n_value += sec->vma; | |
2550 | } | |
2551 | break; | |
2552 | ||
2553 | case bfd_link_hash_common: | |
2554 | isym.n_scnum = N_UNDEF; | |
2555 | isym.n_value = h->root.u.c.size; | |
2556 | break; | |
2557 | ||
2558 | case bfd_link_hash_indirect: | |
252b5132 RH |
2559 | /* Just ignore these. They can't be handled anyhow. */ |
2560 | return true; | |
2561 | } | |
2562 | ||
2563 | if (strlen (h->root.root.string) <= SYMNMLEN) | |
2564 | strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); | |
2565 | else | |
2566 | { | |
2567 | boolean hash; | |
2568 | bfd_size_type indx; | |
2569 | ||
2570 | hash = true; | |
2571 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
2572 | hash = false; | |
2573 | indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash, | |
2574 | false); | |
2575 | if (indx == (bfd_size_type) -1) | |
2576 | { | |
2577 | finfo->failed = true; | |
2578 | return false; | |
2579 | } | |
2580 | isym._n._n_n._n_zeroes = 0; | |
2581 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
2582 | } | |
2583 | ||
2584 | isym.n_sclass = h->class; | |
2585 | isym.n_type = h->type; | |
2586 | ||
2587 | if (isym.n_sclass == C_NULL) | |
2588 | isym.n_sclass = C_EXT; | |
2589 | ||
2590 | /* If doing task linking and this is the pass where we convert | |
2591 | defined globals to statics, then do that conversion now. If the | |
2592 | symbol is not being converted, just ignore it and it will be | |
e4202681 | 2593 | output during a later pass. */ |
252b5132 RH |
2594 | if (finfo->global_to_static) |
2595 | { | |
e4202681 NC |
2596 | if (! IS_EXTERNAL (output_bfd, isym)) |
2597 | return true; | |
2598 | ||
252b5132 RH |
2599 | isym.n_sclass = C_STAT; |
2600 | } | |
2601 | ||
e4202681 NC |
2602 | /* When a weak symbol is not overriden by a strong one, |
2603 | turn it into an external symbol when not building a | |
2604 | shared or relocateable object. */ | |
2605 | if (! finfo->info->shared | |
2606 | && ! finfo->info->relocateable | |
2607 | && IS_WEAK_EXTERNAL (finfo->output_bfd, isym)) | |
2608 | isym.n_sclass = C_EXT; | |
2609 | ||
252b5132 | 2610 | isym.n_numaux = h->numaux; |
244148ad | 2611 | |
252b5132 RH |
2612 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) finfo->outsyms); |
2613 | ||
2614 | symesz = bfd_coff_symesz (output_bfd); | |
2615 | ||
dc810e39 AM |
2616 | pos = obj_sym_filepos (output_bfd); |
2617 | pos += obj_raw_syment_count (output_bfd) * symesz; | |
2618 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2619 | || bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz) | |
252b5132 RH |
2620 | { |
2621 | finfo->failed = true; | |
2622 | return false; | |
2623 | } | |
2624 | ||
2625 | h->indx = obj_raw_syment_count (output_bfd); | |
2626 | ||
2627 | ++obj_raw_syment_count (output_bfd); | |
2628 | ||
2c546cd8 ILT |
2629 | /* Write out any associated aux entries. Most of the aux entries |
2630 | will have been modified in _bfd_coff_link_input_bfd. We have to | |
2631 | handle section aux entries here, now that we have the final | |
2632 | relocation and line number counts. */ | |
252b5132 RH |
2633 | for (i = 0; i < isym.n_numaux; i++) |
2634 | { | |
2c546cd8 ILT |
2635 | union internal_auxent *auxp; |
2636 | ||
2637 | auxp = h->aux + i; | |
2638 | ||
2639 | /* Look for a section aux entry here using the same tests that | |
2640 | coff_swap_aux_out uses. */ | |
2641 | if (i == 0 | |
2642 | && (isym.n_sclass == C_STAT | |
2643 | || isym.n_sclass == C_HIDDEN) | |
2644 | && isym.n_type == T_NULL | |
2645 | && (h->root.type == bfd_link_hash_defined | |
2646 | || h->root.type == bfd_link_hash_defweak)) | |
2647 | { | |
2648 | asection *sec; | |
2649 | ||
2650 | sec = h->root.u.def.section->output_section; | |
2651 | if (sec != NULL) | |
2652 | { | |
2653 | auxp->x_scn.x_scnlen = (sec->_cooked_size != 0 | |
2654 | ? sec->_cooked_size | |
2655 | : sec->_raw_size); | |
2656 | ||
2657 | /* For PE, an overflow on the final link reportedly does | |
2658 | not matter. FIXME: Why not? */ | |
2659 | ||
2660 | if (sec->reloc_count > 0xffff | |
2661 | && (! obj_pe (output_bfd) | |
2662 | || finfo->info->relocateable)) | |
2663 | (*_bfd_error_handler) | |
2664 | (_("%s: %s: reloc overflow: 0x%lx > 0xffff"), | |
2665 | bfd_get_filename (output_bfd), | |
2666 | bfd_get_section_name (output_bfd, sec), | |
2667 | sec->reloc_count); | |
2668 | ||
2669 | if (sec->lineno_count > 0xffff | |
2670 | && (! obj_pe (output_bfd) | |
2671 | || finfo->info->relocateable)) | |
2672 | (*_bfd_error_handler) | |
2673 | (_("%s: warning: %s: line number overflow: 0x%lx > 0xffff"), | |
2674 | bfd_get_filename (output_bfd), | |
2675 | bfd_get_section_name (output_bfd, sec), | |
2676 | sec->lineno_count); | |
2677 | ||
2678 | auxp->x_scn.x_nreloc = sec->reloc_count; | |
2679 | auxp->x_scn.x_nlinno = sec->lineno_count; | |
2680 | auxp->x_scn.x_checksum = 0; | |
2681 | auxp->x_scn.x_associated = 0; | |
2682 | auxp->x_scn.x_comdat = 0; | |
2683 | } | |
2684 | } | |
2685 | ||
2686 | bfd_coff_swap_aux_out (output_bfd, (PTR) auxp, isym.n_type, | |
dc810e39 | 2687 | isym.n_sclass, (int) i, isym.n_numaux, |
252b5132 | 2688 | (PTR) finfo->outsyms); |
dc810e39 | 2689 | if (bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz) |
252b5132 RH |
2690 | { |
2691 | finfo->failed = true; | |
2692 | return false; | |
2693 | } | |
2694 | ++obj_raw_syment_count (output_bfd); | |
2695 | } | |
2696 | ||
2697 | return true; | |
2698 | } | |
2699 | ||
2700 | /* Write out task global symbols, converting them to statics. Called | |
2701 | via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do | |
244148ad | 2702 | the dirty work, if the symbol we are processing needs conversion. */ |
252b5132 RH |
2703 | |
2704 | boolean | |
2705 | _bfd_coff_write_task_globals (h, data) | |
2706 | struct coff_link_hash_entry *h; | |
2707 | PTR data; | |
2708 | { | |
2709 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
2710 | boolean rtnval = true; | |
2711 | boolean save_global_to_static; | |
2712 | ||
e92d460e AM |
2713 | if (h->root.type == bfd_link_hash_warning) |
2714 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2715 | ||
252b5132 RH |
2716 | if (h->indx < 0) |
2717 | { | |
2718 | switch (h->root.type) | |
2719 | { | |
2720 | case bfd_link_hash_defined: | |
2721 | case bfd_link_hash_defweak: | |
2722 | save_global_to_static = finfo->global_to_static; | |
2723 | finfo->global_to_static = true; | |
2724 | rtnval = _bfd_coff_write_global_sym (h, data); | |
2725 | finfo->global_to_static = save_global_to_static; | |
2726 | break; | |
2727 | default: | |
2728 | break; | |
2729 | } | |
2730 | } | |
2731 | return (rtnval); | |
2732 | } | |
2733 | ||
2734 | /* Handle a link order which is supposed to generate a reloc. */ | |
2735 | ||
2736 | boolean | |
2737 | _bfd_coff_reloc_link_order (output_bfd, finfo, output_section, link_order) | |
2738 | bfd *output_bfd; | |
2739 | struct coff_final_link_info *finfo; | |
2740 | asection *output_section; | |
2741 | struct bfd_link_order *link_order; | |
2742 | { | |
2743 | reloc_howto_type *howto; | |
2744 | struct internal_reloc *irel; | |
2745 | struct coff_link_hash_entry **rel_hash_ptr; | |
2746 | ||
2747 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); | |
2748 | if (howto == NULL) | |
2749 | { | |
2750 | bfd_set_error (bfd_error_bad_value); | |
2751 | return false; | |
2752 | } | |
2753 | ||
2754 | if (link_order->u.reloc.p->addend != 0) | |
2755 | { | |
2756 | bfd_size_type size; | |
2757 | bfd_byte *buf; | |
2758 | bfd_reloc_status_type rstat; | |
2759 | boolean ok; | |
dc810e39 | 2760 | file_ptr loc; |
252b5132 RH |
2761 | |
2762 | size = bfd_get_reloc_size (howto); | |
2763 | buf = (bfd_byte *) bfd_zmalloc (size); | |
2764 | if (buf == NULL) | |
2765 | return false; | |
2766 | ||
2767 | rstat = _bfd_relocate_contents (howto, output_bfd, | |
dc810e39 AM |
2768 | (bfd_vma) link_order->u.reloc.p->addend,\ |
2769 | buf); | |
252b5132 RH |
2770 | switch (rstat) |
2771 | { | |
2772 | case bfd_reloc_ok: | |
2773 | break; | |
2774 | default: | |
2775 | case bfd_reloc_outofrange: | |
2776 | abort (); | |
2777 | case bfd_reloc_overflow: | |
2778 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
2779 | (finfo->info, | |
2780 | (link_order->type == bfd_section_reloc_link_order | |
2781 | ? bfd_section_name (output_bfd, | |
2782 | link_order->u.reloc.p->u.section) | |
2783 | : link_order->u.reloc.p->u.name), | |
2784 | howto->name, link_order->u.reloc.p->addend, | |
2785 | (bfd *) NULL, (asection *) NULL, (bfd_vma) 0))) | |
2786 | { | |
2787 | free (buf); | |
2788 | return false; | |
2789 | } | |
2790 | break; | |
2791 | } | |
dc810e39 | 2792 | loc = link_order->offset * bfd_octets_per_byte (output_bfd); |
252b5132 | 2793 | ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf, |
dc810e39 | 2794 | loc, size); |
252b5132 RH |
2795 | free (buf); |
2796 | if (! ok) | |
2797 | return false; | |
2798 | } | |
2799 | ||
2800 | /* Store the reloc information in the right place. It will get | |
2801 | swapped and written out at the end of the final_link routine. */ | |
2802 | ||
2803 | irel = (finfo->section_info[output_section->target_index].relocs | |
2804 | + output_section->reloc_count); | |
2805 | rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes | |
2806 | + output_section->reloc_count); | |
2807 | ||
2808 | memset (irel, 0, sizeof (struct internal_reloc)); | |
2809 | *rel_hash_ptr = NULL; | |
2810 | ||
2811 | irel->r_vaddr = output_section->vma + link_order->offset; | |
2812 | ||
2813 | if (link_order->type == bfd_section_reloc_link_order) | |
2814 | { | |
2815 | /* We need to somehow locate a symbol in the right section. The | |
2816 | symbol must either have a value of zero, or we must adjust | |
2817 | the addend by the value of the symbol. FIXME: Write this | |
2818 | when we need it. The old linker couldn't handle this anyhow. */ | |
2819 | abort (); | |
2820 | *rel_hash_ptr = NULL; | |
2821 | irel->r_symndx = 0; | |
2822 | } | |
2823 | else | |
2824 | { | |
2825 | struct coff_link_hash_entry *h; | |
2826 | ||
2827 | h = ((struct coff_link_hash_entry *) | |
2828 | bfd_wrapped_link_hash_lookup (output_bfd, finfo->info, | |
2829 | link_order->u.reloc.p->u.name, | |
2830 | false, false, true)); | |
2831 | if (h != NULL) | |
2832 | { | |
2833 | if (h->indx >= 0) | |
2834 | irel->r_symndx = h->indx; | |
2835 | else | |
2836 | { | |
2837 | /* Set the index to -2 to force this symbol to get | |
2838 | written out. */ | |
2839 | h->indx = -2; | |
2840 | *rel_hash_ptr = h; | |
2841 | irel->r_symndx = 0; | |
2842 | } | |
2843 | } | |
2844 | else | |
2845 | { | |
2846 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2847 | (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL, | |
2848 | (asection *) NULL, (bfd_vma) 0))) | |
2849 | return false; | |
2850 | irel->r_symndx = 0; | |
2851 | } | |
2852 | } | |
2853 | ||
2854 | /* FIXME: Is this always right? */ | |
2855 | irel->r_type = howto->type; | |
2856 | ||
2857 | /* r_size is only used on the RS/6000, which needs its own linker | |
2858 | routines anyhow. r_extern is only used for ECOFF. */ | |
2859 | ||
2860 | /* FIXME: What is the right value for r_offset? Is zero OK? */ | |
2861 | ||
2862 | ++output_section->reloc_count; | |
2863 | ||
2864 | return true; | |
2865 | } | |
2866 | ||
2867 | /* A basic reloc handling routine which may be used by processors with | |
2868 | simple relocs. */ | |
2869 | ||
2870 | boolean | |
2871 | _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd, | |
2872 | input_section, contents, relocs, syms, | |
2873 | sections) | |
2874 | bfd *output_bfd; | |
2875 | struct bfd_link_info *info; | |
2876 | bfd *input_bfd; | |
2877 | asection *input_section; | |
2878 | bfd_byte *contents; | |
2879 | struct internal_reloc *relocs; | |
2880 | struct internal_syment *syms; | |
2881 | asection **sections; | |
2882 | { | |
2883 | struct internal_reloc *rel; | |
2884 | struct internal_reloc *relend; | |
2885 | ||
2886 | rel = relocs; | |
2887 | relend = rel + input_section->reloc_count; | |
2888 | for (; rel < relend; rel++) | |
2889 | { | |
2890 | long symndx; | |
2891 | struct coff_link_hash_entry *h; | |
2892 | struct internal_syment *sym; | |
2893 | bfd_vma addend; | |
2894 | bfd_vma val; | |
2895 | reloc_howto_type *howto; | |
2896 | bfd_reloc_status_type rstat; | |
2897 | ||
2898 | symndx = rel->r_symndx; | |
2899 | ||
2900 | if (symndx == -1) | |
2901 | { | |
2902 | h = NULL; | |
2903 | sym = NULL; | |
2904 | } | |
75987f83 ILT |
2905 | else if (symndx < 0 |
2906 | || (unsigned long) symndx >= obj_raw_syment_count (input_bfd)) | |
2907 | { | |
2908 | (*_bfd_error_handler) | |
2909 | ("%s: illegal symbol index %ld in relocs", | |
8f615d07 | 2910 | bfd_archive_filename (input_bfd), symndx); |
75987f83 ILT |
2911 | return false; |
2912 | } | |
252b5132 | 2913 | else |
244148ad | 2914 | { |
252b5132 RH |
2915 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
2916 | sym = syms + symndx; | |
2917 | } | |
2918 | ||
2919 | /* COFF treats common symbols in one of two ways. Either the | |
2920 | size of the symbol is included in the section contents, or it | |
2921 | is not. We assume that the size is not included, and force | |
2922 | the rtype_to_howto function to adjust the addend as needed. */ | |
2923 | ||
2924 | if (sym != NULL && sym->n_scnum != 0) | |
2925 | addend = - sym->n_value; | |
2926 | else | |
2927 | addend = 0; | |
2928 | ||
252b5132 RH |
2929 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
2930 | sym, &addend); | |
2931 | if (howto == NULL) | |
2932 | return false; | |
2933 | ||
2934 | /* If we are doing a relocateable link, then we can just ignore | |
2935 | a PC relative reloc that is pcrel_offset. It will already | |
2936 | have the correct value. If this is not a relocateable link, | |
2937 | then we should ignore the symbol value. */ | |
2938 | if (howto->pc_relative && howto->pcrel_offset) | |
2939 | { | |
2940 | if (info->relocateable) | |
2941 | continue; | |
2942 | if (sym != NULL && sym->n_scnum != 0) | |
2943 | addend += sym->n_value; | |
2944 | } | |
2945 | ||
2946 | val = 0; | |
2947 | ||
2948 | if (h == NULL) | |
2949 | { | |
2950 | asection *sec; | |
2951 | ||
2952 | if (symndx == -1) | |
2953 | { | |
2954 | sec = bfd_abs_section_ptr; | |
2955 | val = 0; | |
2956 | } | |
2957 | else | |
2958 | { | |
2959 | sec = sections[symndx]; | |
2960 | val = (sec->output_section->vma | |
2961 | + sec->output_offset | |
2962 | + sym->n_value); | |
2963 | if (! obj_pe (input_bfd)) | |
2964 | val -= sec->vma; | |
2965 | } | |
2966 | } | |
2967 | else | |
2968 | { | |
2969 | if (h->root.type == bfd_link_hash_defined | |
2970 | || h->root.type == bfd_link_hash_defweak) | |
2971 | { | |
2972 | asection *sec; | |
2973 | ||
2974 | sec = h->root.u.def.section; | |
2975 | val = (h->root.u.def.value | |
2976 | + sec->output_section->vma | |
2977 | + sec->output_offset); | |
2978 | } | |
2979 | ||
bc7a577d PB |
2980 | else if (h->root.type == bfd_link_hash_undefweak) |
2981 | val = 0; | |
2982 | ||
252b5132 RH |
2983 | else if (! info->relocateable) |
2984 | { | |
2985 | if (! ((*info->callbacks->undefined_symbol) | |
2986 | (info, h->root.root.string, input_bfd, input_section, | |
5cc7c785 | 2987 | rel->r_vaddr - input_section->vma, true))) |
252b5132 RH |
2988 | return false; |
2989 | } | |
2990 | } | |
2991 | ||
2992 | if (info->base_file) | |
2993 | { | |
244148ad | 2994 | /* Emit a reloc if the backend thinks it needs it. */ |
252b5132 RH |
2995 | if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto)) |
2996 | { | |
2997 | /* Relocation to a symbol in a section which isn't | |
2998 | absolute. We output the address here to a file. | |
2999 | This file is then read by dlltool when generating the | |
3000 | reloc section. Note that the base file is not | |
3001 | portable between systems. We write out a long here, | |
3002 | and dlltool reads in a long. */ | |
244148ad KH |
3003 | long addr = (rel->r_vaddr |
3004 | - input_section->vma | |
3005 | + input_section->output_offset | |
252b5132 RH |
3006 | + input_section->output_section->vma); |
3007 | if (coff_data (output_bfd)->pe) | |
3008 | addr -= pe_data(output_bfd)->pe_opthdr.ImageBase; | |
3009 | if (fwrite (&addr, 1, sizeof (long), (FILE *) info->base_file) | |
3010 | != sizeof (long)) | |
3011 | { | |
3012 | bfd_set_error (bfd_error_system_call); | |
3013 | return false; | |
3014 | } | |
3015 | } | |
3016 | } | |
244148ad | 3017 | |
252b5132 RH |
3018 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3019 | contents, | |
3020 | rel->r_vaddr - input_section->vma, | |
3021 | val, addend); | |
3022 | ||
3023 | switch (rstat) | |
3024 | { | |
3025 | default: | |
3026 | abort (); | |
3027 | case bfd_reloc_ok: | |
3028 | break; | |
3029 | case bfd_reloc_outofrange: | |
3030 | (*_bfd_error_handler) | |
3031 | (_("%s: bad reloc address 0x%lx in section `%s'"), | |
8f615d07 | 3032 | bfd_archive_filename (input_bfd), |
252b5132 RH |
3033 | (unsigned long) rel->r_vaddr, |
3034 | bfd_get_section_name (input_bfd, input_section)); | |
3035 | return false; | |
3036 | case bfd_reloc_overflow: | |
3037 | { | |
3038 | const char *name; | |
3039 | char buf[SYMNMLEN + 1]; | |
3040 | ||
3041 | if (symndx == -1) | |
3042 | name = "*ABS*"; | |
3043 | else if (h != NULL) | |
3044 | name = h->root.root.string; | |
3045 | else | |
3046 | { | |
3047 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
3048 | if (name == NULL) | |
3049 | return false; | |
3050 | } | |
3051 | ||
3052 | if (! ((*info->callbacks->reloc_overflow) | |
3053 | (info, name, howto->name, (bfd_vma) 0, input_bfd, | |
3054 | input_section, rel->r_vaddr - input_section->vma))) | |
3055 | return false; | |
3056 | } | |
3057 | } | |
3058 | } | |
3059 | return true; | |
3060 | } |