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; | |
a8fcf378 NC |
1325 | /* Don't mark relocs in excluded sections. */ |
1326 | if (a->output_section == bfd_abs_section_ptr) | |
1327 | continue; | |
252b5132 RH |
1328 | |
1329 | /* Read in the relocs. */ | |
1330 | internal_relocs = _bfd_coff_read_internal_relocs | |
1331 | (input_bfd, a, false, | |
1332 | finfo->external_relocs, | |
1333 | finfo->info->relocateable, | |
1334 | (finfo->info->relocateable | |
1335 | ? (finfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count) | |
1336 | : finfo->internal_relocs) | |
1337 | ); | |
244148ad | 1338 | |
252b5132 RH |
1339 | if (internal_relocs == NULL) |
1340 | continue; | |
1341 | ||
1342 | irel = internal_relocs; | |
1343 | irelend = irel + a->reloc_count; | |
1344 | ||
1345 | /* Place a mark in the sym_indices array (whose entries have | |
1346 | been initialised to 0) for all of the symbols that are used | |
1347 | in the relocation table. This will then be picked up in the | |
1348 | skip/don't pass */ | |
244148ad | 1349 | |
252b5132 RH |
1350 | for (; irel < irelend; irel++) |
1351 | { | |
1352 | finfo->sym_indices[ irel->r_symndx ] = -1; | |
1353 | } | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | /* Link an input file into the linker output file. This function | |
1358 | handles all the sections and relocations of the input file at once. */ | |
1359 | ||
1360 | boolean | |
1361 | _bfd_coff_link_input_bfd (finfo, input_bfd) | |
1362 | struct coff_final_link_info *finfo; | |
1363 | bfd *input_bfd; | |
1364 | { | |
b2d638c7 ILT |
1365 | unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask; |
1366 | unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft; | |
1367 | #if 0 | |
1368 | unsigned int n_btmask = coff_data (input_bfd)->local_n_btmask; | |
1369 | #endif | |
252b5132 RH |
1370 | boolean (*adjust_symndx) PARAMS ((bfd *, struct bfd_link_info *, bfd *, |
1371 | asection *, struct internal_reloc *, | |
1372 | boolean *)); | |
1373 | bfd *output_bfd; | |
1374 | const char *strings; | |
1375 | bfd_size_type syment_base; | |
252b5132 RH |
1376 | boolean copy, hash; |
1377 | bfd_size_type isymesz; | |
1378 | bfd_size_type osymesz; | |
1379 | bfd_size_type linesz; | |
1380 | bfd_byte *esym; | |
1381 | bfd_byte *esym_end; | |
1382 | struct internal_syment *isymp; | |
1383 | asection **secpp; | |
1384 | long *indexp; | |
1385 | unsigned long output_index; | |
1386 | bfd_byte *outsym; | |
1387 | struct coff_link_hash_entry **sym_hash; | |
1388 | asection *o; | |
1389 | ||
1390 | /* Move all the symbols to the output file. */ | |
1391 | ||
1392 | output_bfd = finfo->output_bfd; | |
252b5132 RH |
1393 | strings = NULL; |
1394 | syment_base = obj_raw_syment_count (output_bfd); | |
1395 | isymesz = bfd_coff_symesz (input_bfd); | |
1396 | osymesz = bfd_coff_symesz (output_bfd); | |
1397 | linesz = bfd_coff_linesz (input_bfd); | |
1398 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
1399 | ||
252b5132 RH |
1400 | copy = false; |
1401 | if (! finfo->info->keep_memory) | |
1402 | copy = true; | |
1403 | hash = true; | |
1404 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
1405 | hash = false; | |
1406 | ||
1407 | if (! _bfd_coff_get_external_symbols (input_bfd)) | |
1408 | return false; | |
1409 | ||
1410 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1411 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1412 | isymp = finfo->internal_syms; | |
1413 | secpp = finfo->sec_ptrs; | |
1414 | indexp = finfo->sym_indices; | |
1415 | output_index = syment_base; | |
1416 | outsym = finfo->outsyms; | |
1417 | ||
1418 | if (coff_data (output_bfd)->pe) | |
1419 | { | |
1420 | if (! process_embedded_commands (output_bfd, finfo->info, input_bfd)) | |
1421 | return false; | |
1422 | } | |
1423 | ||
1424 | /* If we are going to perform relocations and also strip/discard some symbols | |
1425 | then we must make sure that we do not strip/discard those symbols that are | |
1426 | going to be involved in the relocations */ | |
1427 | if (( finfo->info->strip != strip_none | |
1428 | || finfo->info->discard != discard_none) | |
1429 | && finfo->info->relocateable) | |
1430 | { | |
1431 | /* mark the symbol array as 'not-used' */ | |
244148ad KH |
1432 | memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp); |
1433 | ||
252b5132 RH |
1434 | mark_relocs (finfo, input_bfd); |
1435 | } | |
1436 | ||
1437 | while (esym < esym_end) | |
1438 | { | |
1439 | struct internal_syment isym; | |
5d54c628 | 1440 | enum coff_symbol_classification classification; |
252b5132 RH |
1441 | boolean skip; |
1442 | boolean global; | |
1443 | boolean dont_skip_symbol; | |
1444 | int add; | |
1445 | ||
1446 | bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp); | |
1447 | ||
1448 | /* Make a copy of *isymp so that the relocate_section function | |
1449 | always sees the original values. This is more reliable than | |
1450 | always recomputing the symbol value even if we are stripping | |
1451 | the symbol. */ | |
1452 | isym = *isymp; | |
1453 | ||
5d54c628 ILT |
1454 | classification = bfd_coff_classify_symbol (input_bfd, &isym); |
1455 | switch (classification) | |
252b5132 | 1456 | { |
5d54c628 ILT |
1457 | default: |
1458 | abort (); | |
1459 | case COFF_SYMBOL_GLOBAL: | |
1460 | case COFF_SYMBOL_PE_SECTION: | |
1461 | case COFF_SYMBOL_LOCAL: | |
1462 | *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum); | |
1463 | break; | |
1464 | case COFF_SYMBOL_COMMON: | |
1465 | *secpp = bfd_com_section_ptr; | |
1466 | break; | |
1467 | case COFF_SYMBOL_UNDEFINED: | |
1468 | *secpp = bfd_und_section_ptr; | |
1469 | break; | |
252b5132 RH |
1470 | } |
1471 | ||
1472 | /* Extract the flag indicating if this symbol is used by a | |
1473 | relocation. */ | |
1474 | if ((finfo->info->strip != strip_none | |
1475 | || finfo->info->discard != discard_none) | |
1476 | && finfo->info->relocateable) | |
1477 | dont_skip_symbol = *indexp; | |
1478 | else | |
1479 | dont_skip_symbol = false; | |
244148ad | 1480 | |
252b5132 RH |
1481 | *indexp = -1; |
1482 | ||
1483 | skip = false; | |
1484 | global = false; | |
1485 | add = 1 + isym.n_numaux; | |
1486 | ||
1487 | /* If we are stripping all symbols, we want to skip this one. */ | |
1488 | if (finfo->info->strip == strip_all && ! dont_skip_symbol) | |
1489 | skip = true; | |
1490 | ||
1491 | if (! skip) | |
1492 | { | |
5d54c628 | 1493 | switch (classification) |
252b5132 | 1494 | { |
5d54c628 ILT |
1495 | default: |
1496 | abort (); | |
1497 | case COFF_SYMBOL_GLOBAL: | |
1498 | case COFF_SYMBOL_COMMON: | |
1499 | case COFF_SYMBOL_PE_SECTION: | |
252b5132 RH |
1500 | /* This is a global symbol. Global symbols come at the |
1501 | end of the symbol table, so skip them for now. | |
1502 | Locally defined function symbols, however, are an | |
1503 | exception, and are not moved to the end. */ | |
1504 | global = true; | |
5d54c628 | 1505 | if (! ISFCN (isym.n_type)) |
252b5132 | 1506 | skip = true; |
5d54c628 ILT |
1507 | break; |
1508 | ||
1509 | case COFF_SYMBOL_UNDEFINED: | |
1510 | /* Undefined symbols are left for the end. */ | |
1511 | global = true; | |
1512 | skip = true; | |
1513 | break; | |
1514 | ||
1515 | case COFF_SYMBOL_LOCAL: | |
252b5132 RH |
1516 | /* This is a local symbol. Skip it if we are discarding |
1517 | local symbols. */ | |
1518 | if (finfo->info->discard == discard_all && ! dont_skip_symbol) | |
1519 | skip = true; | |
5d54c628 | 1520 | break; |
252b5132 RH |
1521 | } |
1522 | } | |
1523 | ||
440c4607 NC |
1524 | #ifndef COFF_WITH_PE |
1525 | /* Skip section symbols for sections which are not going to be | |
862517b6 | 1526 | emitted. */ |
440c4607 NC |
1527 | if (!skip |
1528 | && isym.n_sclass == C_STAT | |
1529 | && isym.n_type == T_NULL | |
1530 | && isym.n_numaux > 0) | |
1531 | { | |
862517b6 | 1532 | if ((*secpp)->output_section == bfd_abs_section_ptr) |
440c4607 NC |
1533 | skip = true; |
1534 | } | |
1535 | #endif | |
1536 | ||
252b5132 RH |
1537 | /* If we stripping debugging symbols, and this is a debugging |
1538 | symbol, then skip it. FIXME: gas sets the section to N_ABS | |
1539 | for some types of debugging symbols; I don't know if this is | |
1540 | a bug or not. In any case, we handle it here. */ | |
1541 | if (! skip | |
1542 | && finfo->info->strip == strip_debugger | |
1543 | && ! dont_skip_symbol | |
1544 | && (isym.n_scnum == N_DEBUG | |
1545 | || (isym.n_scnum == N_ABS | |
1546 | && (isym.n_sclass == C_AUTO | |
1547 | || isym.n_sclass == C_REG | |
1548 | || isym.n_sclass == C_MOS | |
1549 | || isym.n_sclass == C_MOE | |
1550 | || isym.n_sclass == C_MOU | |
1551 | || isym.n_sclass == C_ARG | |
1552 | || isym.n_sclass == C_REGPARM | |
1553 | || isym.n_sclass == C_FIELD | |
1554 | || isym.n_sclass == C_EOS)))) | |
1555 | skip = true; | |
1556 | ||
1557 | /* If some symbols are stripped based on the name, work out the | |
1558 | name and decide whether to skip this symbol. */ | |
1559 | if (! skip | |
1560 | && (finfo->info->strip == strip_some | |
1561 | || finfo->info->discard == discard_l)) | |
1562 | { | |
1563 | const char *name; | |
1564 | char buf[SYMNMLEN + 1]; | |
1565 | ||
1566 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1567 | if (name == NULL) | |
1568 | return false; | |
1569 | ||
1570 | if (! dont_skip_symbol | |
1571 | && ((finfo->info->strip == strip_some | |
1572 | && (bfd_hash_lookup (finfo->info->keep_hash, name, false, | |
1573 | false) == NULL)) | |
1574 | || (! global | |
1575 | && finfo->info->discard == discard_l | |
1576 | && bfd_is_local_label_name (input_bfd, name)))) | |
1577 | skip = true; | |
1578 | } | |
1579 | ||
1580 | /* If this is an enum, struct, or union tag, see if we have | |
1581 | already output an identical type. */ | |
1582 | if (! skip | |
1583 | && (finfo->output_bfd->flags & BFD_TRADITIONAL_FORMAT) == 0 | |
1584 | && (isym.n_sclass == C_ENTAG | |
1585 | || isym.n_sclass == C_STRTAG | |
1586 | || isym.n_sclass == C_UNTAG) | |
1587 | && isym.n_numaux == 1) | |
1588 | { | |
1589 | const char *name; | |
1590 | char buf[SYMNMLEN + 1]; | |
1591 | struct coff_debug_merge_hash_entry *mh; | |
1592 | struct coff_debug_merge_type *mt; | |
1593 | union internal_auxent aux; | |
1594 | struct coff_debug_merge_element **epp; | |
1595 | bfd_byte *esl, *eslend; | |
1596 | struct internal_syment *islp; | |
dc810e39 | 1597 | bfd_size_type amt; |
252b5132 RH |
1598 | |
1599 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1600 | if (name == NULL) | |
1601 | return false; | |
1602 | ||
1603 | /* Ignore fake names invented by compiler; treat them all as | |
1604 | the same name. */ | |
1605 | if (*name == '~' || *name == '.' || *name == '$' | |
1606 | || (*name == bfd_get_symbol_leading_char (input_bfd) | |
1607 | && (name[1] == '~' || name[1] == '.' || name[1] == '$'))) | |
1608 | name = ""; | |
1609 | ||
1610 | mh = coff_debug_merge_hash_lookup (&finfo->debug_merge, name, | |
1611 | true, true); | |
1612 | if (mh == NULL) | |
1613 | return false; | |
1614 | ||
1615 | /* Allocate memory to hold type information. If this turns | |
1616 | out to be a duplicate, we pass this address to | |
1617 | bfd_release. */ | |
dc810e39 AM |
1618 | amt = sizeof (struct coff_debug_merge_type); |
1619 | mt = (struct coff_debug_merge_type *) bfd_alloc (input_bfd, amt); | |
252b5132 RH |
1620 | if (mt == NULL) |
1621 | return false; | |
1622 | mt->class = isym.n_sclass; | |
1623 | ||
1624 | /* Pick up the aux entry, which points to the end of the tag | |
1625 | entries. */ | |
1626 | bfd_coff_swap_aux_in (input_bfd, (PTR) (esym + isymesz), | |
1627 | isym.n_type, isym.n_sclass, 0, isym.n_numaux, | |
1628 | (PTR) &aux); | |
1629 | ||
1630 | /* Gather the elements. */ | |
1631 | epp = &mt->elements; | |
1632 | mt->elements = NULL; | |
1633 | islp = isymp + 2; | |
1634 | esl = esym + 2 * isymesz; | |
1635 | eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd) | |
1636 | + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz); | |
1637 | while (esl < eslend) | |
1638 | { | |
1639 | const char *elename; | |
1640 | char elebuf[SYMNMLEN + 1]; | |
00692651 | 1641 | char *name_copy; |
252b5132 RH |
1642 | |
1643 | bfd_coff_swap_sym_in (input_bfd, (PTR) esl, (PTR) islp); | |
1644 | ||
dc810e39 | 1645 | amt = sizeof (struct coff_debug_merge_element); |
252b5132 | 1646 | *epp = ((struct coff_debug_merge_element *) |
dc810e39 | 1647 | bfd_alloc (input_bfd, amt)); |
252b5132 RH |
1648 | if (*epp == NULL) |
1649 | return false; | |
1650 | ||
1651 | elename = _bfd_coff_internal_syment_name (input_bfd, islp, | |
1652 | elebuf); | |
1653 | if (elename == NULL) | |
1654 | return false; | |
1655 | ||
dc810e39 AM |
1656 | amt = strlen (elename) + 1; |
1657 | name_copy = (char *) bfd_alloc (input_bfd, amt); | |
00692651 | 1658 | if (name_copy == NULL) |
252b5132 | 1659 | return false; |
00692651 | 1660 | strcpy (name_copy, elename); |
252b5132 | 1661 | |
00692651 | 1662 | (*epp)->name = name_copy; |
252b5132 RH |
1663 | (*epp)->type = islp->n_type; |
1664 | (*epp)->tagndx = 0; | |
1665 | if (islp->n_numaux >= 1 | |
1666 | && islp->n_type != T_NULL | |
1667 | && islp->n_sclass != C_EOS) | |
1668 | { | |
1669 | union internal_auxent eleaux; | |
1670 | long indx; | |
1671 | ||
1672 | bfd_coff_swap_aux_in (input_bfd, (PTR) (esl + isymesz), | |
1673 | islp->n_type, islp->n_sclass, 0, | |
1674 | islp->n_numaux, (PTR) &eleaux); | |
1675 | indx = eleaux.x_sym.x_tagndx.l; | |
1676 | ||
1677 | /* FIXME: If this tagndx entry refers to a symbol | |
1678 | defined later in this file, we just ignore it. | |
1679 | Handling this correctly would be tedious, and may | |
1680 | not be required. */ | |
1681 | ||
1682 | if (indx > 0 | |
1683 | && (indx | |
1684 | < ((esym - | |
1685 | (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1686 | / (long) isymesz))) | |
1687 | { | |
1688 | (*epp)->tagndx = finfo->sym_indices[indx]; | |
1689 | if ((*epp)->tagndx < 0) | |
1690 | (*epp)->tagndx = 0; | |
1691 | } | |
1692 | } | |
1693 | epp = &(*epp)->next; | |
1694 | *epp = NULL; | |
1695 | ||
1696 | esl += (islp->n_numaux + 1) * isymesz; | |
1697 | islp += islp->n_numaux + 1; | |
1698 | } | |
1699 | ||
1700 | /* See if we already have a definition which matches this | |
1701 | type. We always output the type if it has no elements, | |
1702 | for simplicity. */ | |
1703 | if (mt->elements == NULL) | |
1704 | bfd_release (input_bfd, (PTR) mt); | |
1705 | else | |
1706 | { | |
1707 | struct coff_debug_merge_type *mtl; | |
1708 | ||
1709 | for (mtl = mh->types; mtl != NULL; mtl = mtl->next) | |
1710 | { | |
1711 | struct coff_debug_merge_element *me, *mel; | |
1712 | ||
1713 | if (mtl->class != mt->class) | |
1714 | continue; | |
1715 | ||
1716 | for (me = mt->elements, mel = mtl->elements; | |
1717 | me != NULL && mel != NULL; | |
1718 | me = me->next, mel = mel->next) | |
1719 | { | |
1720 | if (strcmp (me->name, mel->name) != 0 | |
1721 | || me->type != mel->type | |
1722 | || me->tagndx != mel->tagndx) | |
1723 | break; | |
1724 | } | |
1725 | ||
1726 | if (me == NULL && mel == NULL) | |
1727 | break; | |
1728 | } | |
1729 | ||
1730 | if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base) | |
1731 | { | |
1732 | /* This is the first definition of this type. */ | |
1733 | mt->indx = output_index; | |
1734 | mt->next = mh->types; | |
1735 | mh->types = mt; | |
1736 | } | |
1737 | else | |
1738 | { | |
1739 | /* This is a redefinition which can be merged. */ | |
1740 | bfd_release (input_bfd, (PTR) mt); | |
1741 | *indexp = mtl->indx; | |
1742 | add = (eslend - esym) / isymesz; | |
1743 | skip = true; | |
1744 | } | |
1745 | } | |
1746 | } | |
1747 | ||
1748 | /* We now know whether we are to skip this symbol or not. */ | |
1749 | if (! skip) | |
1750 | { | |
1751 | /* Adjust the symbol in order to output it. */ | |
1752 | ||
1753 | if (isym._n._n_n._n_zeroes == 0 | |
1754 | && isym._n._n_n._n_offset != 0) | |
1755 | { | |
1756 | const char *name; | |
1757 | bfd_size_type indx; | |
1758 | ||
1759 | /* This symbol has a long name. Enter it in the string | |
1760 | table we are building. Note that we do not check | |
1761 | bfd_coff_symname_in_debug. That is only true for | |
1762 | XCOFF, and XCOFF requires different linking code | |
1763 | anyhow. */ | |
1764 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, | |
1765 | (char *) NULL); | |
1766 | if (name == NULL) | |
1767 | return false; | |
1768 | indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); | |
1769 | if (indx == (bfd_size_type) -1) | |
1770 | return false; | |
1771 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
1772 | } | |
1773 | ||
8add8e30 | 1774 | switch (isym.n_sclass) |
252b5132 | 1775 | { |
8add8e30 ILT |
1776 | case C_AUTO: |
1777 | case C_MOS: | |
1778 | case C_EOS: | |
1779 | case C_MOE: | |
1780 | case C_MOU: | |
1781 | case C_UNTAG: | |
1782 | case C_STRTAG: | |
1783 | case C_ENTAG: | |
1784 | case C_TPDEF: | |
1785 | case C_ARG: | |
1786 | case C_USTATIC: | |
1787 | case C_REG: | |
1788 | case C_REGPARM: | |
1789 | case C_FIELD: | |
1790 | /* The symbol value should not be modified. */ | |
1791 | break; | |
1792 | ||
1793 | case C_FCN: | |
1794 | if (obj_pe (input_bfd) | |
1795 | && strcmp (isym.n_name, ".bf") != 0 | |
1796 | && isym.n_scnum > 0) | |
1797 | { | |
1798 | /* For PE, .lf and .ef get their value left alone, | |
1799 | while .bf gets relocated. However, they all have | |
1800 | "real" section numbers, and need to be moved into | |
1801 | the new section. */ | |
1802 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1803 | break; | |
1804 | } | |
1805 | /* Fall through. */ | |
1806 | default: | |
1807 | case C_LABEL: /* Not completely sure about these 2 */ | |
1808 | case C_EXTDEF: | |
1809 | case C_BLOCK: | |
1810 | case C_EFCN: | |
1811 | case C_NULL: | |
1812 | case C_EXT: | |
1813 | case C_STAT: | |
1814 | case C_SECTION: | |
1815 | case C_NT_WEAK: | |
1816 | /* Compute new symbol location. */ | |
1817 | if (isym.n_scnum > 0) | |
1818 | { | |
1819 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1820 | isym.n_value += (*secpp)->output_offset; | |
1821 | if (! obj_pe (input_bfd)) | |
1822 | isym.n_value -= (*secpp)->vma; | |
1823 | if (! obj_pe (finfo->output_bfd)) | |
1824 | isym.n_value += (*secpp)->output_section->vma; | |
1825 | } | |
1826 | break; | |
1827 | ||
1828 | case C_FILE: | |
1829 | /* The value of a C_FILE symbol is the symbol index of | |
1830 | the next C_FILE symbol. The value of the last C_FILE | |
1831 | symbol is the symbol index to the first external | |
1832 | symbol (actually, coff_renumber_symbols does not get | |
1833 | this right--it just sets the value of the last C_FILE | |
1834 | symbol to zero--and nobody has ever complained about | |
1835 | it). We try to get this right, below, just before we | |
1836 | write the symbols out, but in the general case we may | |
1837 | have to write the symbol out twice. */ | |
252b5132 | 1838 | |
252b5132 | 1839 | if (finfo->last_file_index != -1 |
cea4409c | 1840 | && finfo->last_file.n_value != (bfd_vma) output_index) |
252b5132 | 1841 | { |
8add8e30 ILT |
1842 | /* We must correct the value of the last C_FILE |
1843 | entry. */ | |
252b5132 RH |
1844 | finfo->last_file.n_value = output_index; |
1845 | if ((bfd_size_type) finfo->last_file_index >= syment_base) | |
1846 | { | |
1847 | /* The last C_FILE symbol is in this input file. */ | |
1848 | bfd_coff_swap_sym_out (output_bfd, | |
1849 | (PTR) &finfo->last_file, | |
1850 | (PTR) (finfo->outsyms | |
1851 | + ((finfo->last_file_index | |
1852 | - syment_base) | |
1853 | * osymesz))); | |
1854 | } | |
1855 | else | |
1856 | { | |
dc810e39 AM |
1857 | file_ptr pos; |
1858 | ||
252b5132 RH |
1859 | /* We have already written out the last C_FILE |
1860 | symbol. We need to write it out again. We | |
1861 | borrow *outsym temporarily. */ | |
1862 | bfd_coff_swap_sym_out (output_bfd, | |
1863 | (PTR) &finfo->last_file, | |
1864 | (PTR) outsym); | |
dc810e39 AM |
1865 | pos = obj_sym_filepos (output_bfd); |
1866 | pos += finfo->last_file_index * osymesz; | |
1867 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
1868 | || bfd_bwrite (outsym, osymesz, output_bfd) != osymesz) | |
252b5132 RH |
1869 | return false; |
1870 | } | |
1871 | } | |
1872 | ||
1873 | finfo->last_file_index = output_index; | |
1874 | finfo->last_file = isym; | |
8add8e30 | 1875 | break; |
252b5132 RH |
1876 | } |
1877 | ||
1878 | /* If doing task linking, convert normal global function symbols to | |
e4202681 NC |
1879 | static functions. */ |
1880 | if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym)) | |
252b5132 RH |
1881 | isym.n_sclass = C_STAT; |
1882 | ||
1883 | /* Output the symbol. */ | |
1884 | ||
1885 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); | |
1886 | ||
1887 | *indexp = output_index; | |
1888 | ||
1889 | if (global) | |
1890 | { | |
1891 | long indx; | |
1892 | struct coff_link_hash_entry *h; | |
1893 | ||
1894 | indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1895 | / isymesz); | |
1896 | h = obj_coff_sym_hashes (input_bfd)[indx]; | |
1897 | if (h == NULL) | |
1898 | { | |
1899 | /* This can happen if there were errors earlier in | |
1900 | the link. */ | |
1901 | bfd_set_error (bfd_error_bad_value); | |
1902 | return false; | |
1903 | } | |
1904 | h->indx = output_index; | |
1905 | } | |
1906 | ||
1907 | output_index += add; | |
1908 | outsym += add * osymesz; | |
1909 | } | |
1910 | ||
1911 | esym += add * isymesz; | |
1912 | isymp += add; | |
1913 | ++secpp; | |
1914 | ++indexp; | |
1915 | for (--add; add > 0; --add) | |
1916 | { | |
1917 | *secpp++ = NULL; | |
1918 | *indexp++ = -1; | |
1919 | } | |
1920 | } | |
1921 | ||
1922 | /* Fix up the aux entries. This must be done in a separate pass, | |
1923 | because we don't know the correct symbol indices until we have | |
1924 | already decided which symbols we are going to keep. */ | |
1925 | ||
1926 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1927 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1928 | isymp = finfo->internal_syms; | |
1929 | indexp = finfo->sym_indices; | |
1930 | sym_hash = obj_coff_sym_hashes (input_bfd); | |
1931 | outsym = finfo->outsyms; | |
1932 | while (esym < esym_end) | |
1933 | { | |
1934 | int add; | |
1935 | ||
1936 | add = 1 + isymp->n_numaux; | |
1937 | ||
1938 | if ((*indexp < 0 | |
1939 | || (bfd_size_type) *indexp < syment_base) | |
1940 | && (*sym_hash == NULL | |
1941 | || (*sym_hash)->auxbfd != input_bfd)) | |
1942 | esym += add * isymesz; | |
1943 | else | |
1944 | { | |
1945 | struct coff_link_hash_entry *h; | |
1946 | int i; | |
1947 | ||
1948 | h = NULL; | |
1949 | if (*indexp < 0) | |
1950 | { | |
1951 | h = *sym_hash; | |
1952 | ||
1953 | /* The m68k-motorola-sysv assembler will sometimes | |
1954 | generate two symbols with the same name, but only one | |
1955 | will have aux entries. */ | |
1956 | BFD_ASSERT (isymp->n_numaux == 0 | |
1957 | || h->numaux == isymp->n_numaux); | |
1958 | } | |
1959 | ||
1960 | esym += isymesz; | |
1961 | ||
1962 | if (h == NULL) | |
1963 | outsym += osymesz; | |
1964 | ||
1965 | /* Handle the aux entries. This handling is based on | |
1966 | coff_pointerize_aux. I don't know if it always correct. */ | |
1967 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) | |
1968 | { | |
1969 | union internal_auxent aux; | |
1970 | union internal_auxent *auxp; | |
1971 | ||
1972 | if (h != NULL) | |
1973 | auxp = h->aux + i; | |
1974 | else | |
1975 | { | |
1976 | bfd_coff_swap_aux_in (input_bfd, (PTR) esym, isymp->n_type, | |
1977 | isymp->n_sclass, i, isymp->n_numaux, | |
1978 | (PTR) &aux); | |
1979 | auxp = &aux; | |
1980 | } | |
1981 | ||
1982 | if (isymp->n_sclass == C_FILE) | |
1983 | { | |
1984 | /* If this is a long filename, we must put it in the | |
1985 | string table. */ | |
1986 | if (auxp->x_file.x_n.x_zeroes == 0 | |
1987 | && auxp->x_file.x_n.x_offset != 0) | |
1988 | { | |
1989 | const char *filename; | |
1990 | bfd_size_type indx; | |
1991 | ||
1992 | BFD_ASSERT (auxp->x_file.x_n.x_offset | |
1993 | >= STRING_SIZE_SIZE); | |
1994 | if (strings == NULL) | |
1995 | { | |
1996 | strings = _bfd_coff_read_string_table (input_bfd); | |
1997 | if (strings == NULL) | |
1998 | return false; | |
1999 | } | |
2000 | filename = strings + auxp->x_file.x_n.x_offset; | |
2001 | indx = _bfd_stringtab_add (finfo->strtab, filename, | |
2002 | hash, copy); | |
2003 | if (indx == (bfd_size_type) -1) | |
2004 | return false; | |
2005 | auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; | |
2006 | } | |
2007 | } | |
2008 | else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) | |
2009 | { | |
2010 | unsigned long indx; | |
2011 | ||
2012 | if (ISFCN (isymp->n_type) | |
2013 | || ISTAG (isymp->n_sclass) | |
2014 | || isymp->n_sclass == C_BLOCK | |
2015 | || isymp->n_sclass == C_FCN) | |
2016 | { | |
2017 | indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l; | |
2018 | if (indx > 0 | |
2019 | && indx < obj_raw_syment_count (input_bfd)) | |
2020 | { | |
2021 | /* We look forward through the symbol for | |
2022 | the index of the next symbol we are going | |
2023 | to include. I don't know if this is | |
2024 | entirely right. */ | |
2025 | while ((finfo->sym_indices[indx] < 0 | |
2026 | || ((bfd_size_type) finfo->sym_indices[indx] | |
2027 | < syment_base)) | |
2028 | && indx < obj_raw_syment_count (input_bfd)) | |
2029 | ++indx; | |
2030 | if (indx >= obj_raw_syment_count (input_bfd)) | |
2031 | indx = output_index; | |
2032 | else | |
2033 | indx = finfo->sym_indices[indx]; | |
2034 | auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx; | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | indx = auxp->x_sym.x_tagndx.l; | |
2039 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) | |
2040 | { | |
2041 | long symindx; | |
2042 | ||
2043 | symindx = finfo->sym_indices[indx]; | |
2044 | if (symindx < 0) | |
2045 | auxp->x_sym.x_tagndx.l = 0; | |
2046 | else | |
2047 | auxp->x_sym.x_tagndx.l = symindx; | |
2048 | } | |
2049 | ||
2050 | /* The .bf symbols are supposed to be linked through | |
2051 | the endndx field. We need to carry this list | |
2052 | across object files. */ | |
2053 | if (i == 0 | |
2054 | && h == NULL | |
2055 | && isymp->n_sclass == C_FCN | |
2056 | && (isymp->_n._n_n._n_zeroes != 0 | |
2057 | || isymp->_n._n_n._n_offset == 0) | |
2058 | && isymp->_n._n_name[0] == '.' | |
2059 | && isymp->_n._n_name[1] == 'b' | |
2060 | && isymp->_n._n_name[2] == 'f' | |
2061 | && isymp->_n._n_name[3] == '\0') | |
2062 | { | |
2063 | if (finfo->last_bf_index != -1) | |
2064 | { | |
2065 | finfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
2066 | *indexp; | |
2067 | ||
2068 | if ((bfd_size_type) finfo->last_bf_index | |
2069 | >= syment_base) | |
2070 | { | |
2071 | PTR auxout; | |
2072 | ||
2073 | /* The last .bf symbol is in this input | |
2074 | file. This will only happen if the | |
2075 | assembler did not set up the .bf | |
2076 | endndx symbols correctly. */ | |
2077 | auxout = (PTR) (finfo->outsyms | |
2078 | + ((finfo->last_bf_index | |
2079 | - syment_base) | |
2080 | * osymesz)); | |
2081 | bfd_coff_swap_aux_out (output_bfd, | |
2082 | (PTR) &finfo->last_bf, | |
2083 | isymp->n_type, | |
2084 | isymp->n_sclass, | |
2085 | 0, isymp->n_numaux, | |
2086 | auxout); | |
2087 | } | |
2088 | else | |
2089 | { | |
dc810e39 AM |
2090 | file_ptr pos; |
2091 | ||
252b5132 RH |
2092 | /* We have already written out the last |
2093 | .bf aux entry. We need to write it | |
2094 | out again. We borrow *outsym | |
2095 | temporarily. FIXME: This case should | |
2096 | be made faster. */ | |
2097 | bfd_coff_swap_aux_out (output_bfd, | |
2098 | (PTR) &finfo->last_bf, | |
2099 | isymp->n_type, | |
2100 | isymp->n_sclass, | |
2101 | 0, isymp->n_numaux, | |
2102 | (PTR) outsym); | |
dc810e39 AM |
2103 | pos = obj_sym_filepos (output_bfd); |
2104 | pos += finfo->last_bf_index * osymesz; | |
2105 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2106 | || (bfd_bwrite (outsym, osymesz, output_bfd) | |
2107 | != osymesz)) | |
252b5132 RH |
2108 | return false; |
2109 | } | |
2110 | } | |
2111 | ||
2112 | if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0) | |
2113 | finfo->last_bf_index = -1; | |
2114 | else | |
2115 | { | |
2116 | /* The endndx field of this aux entry must | |
2117 | be updated with the symbol number of the | |
2118 | next .bf symbol. */ | |
2119 | finfo->last_bf = *auxp; | |
2120 | finfo->last_bf_index = (((outsym - finfo->outsyms) | |
2121 | / osymesz) | |
2122 | + syment_base); | |
2123 | } | |
2124 | } | |
2125 | } | |
2126 | ||
2127 | if (h == NULL) | |
2128 | { | |
2129 | bfd_coff_swap_aux_out (output_bfd, (PTR) auxp, isymp->n_type, | |
2130 | isymp->n_sclass, i, isymp->n_numaux, | |
2131 | (PTR) outsym); | |
2132 | outsym += osymesz; | |
2133 | } | |
2134 | ||
2135 | esym += isymesz; | |
2136 | } | |
2137 | } | |
2138 | ||
2139 | indexp += add; | |
2140 | isymp += add; | |
2141 | sym_hash += add; | |
2142 | } | |
2143 | ||
2144 | /* Relocate the line numbers, unless we are stripping them. */ | |
2145 | if (finfo->info->strip == strip_none | |
2146 | || finfo->info->strip == strip_some) | |
2147 | { | |
2148 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2149 | { | |
2150 | bfd_vma offset; | |
2151 | bfd_byte *eline; | |
2152 | bfd_byte *elineend; | |
b545f675 ILT |
2153 | bfd_byte *oeline; |
2154 | boolean skipping; | |
dc810e39 AM |
2155 | file_ptr pos; |
2156 | bfd_size_type amt; | |
252b5132 RH |
2157 | |
2158 | /* FIXME: If SEC_HAS_CONTENTS is not for the section, then | |
2159 | build_link_order in ldwrite.c will not have created a | |
2160 | link order, which means that we will not have seen this | |
2161 | input section in _bfd_coff_final_link, which means that | |
2162 | we will not have allocated space for the line numbers of | |
2163 | this section. I don't think line numbers can be | |
2164 | meaningful for a section which does not have | |
2165 | SEC_HAS_CONTENTS set, but, if they do, this must be | |
2166 | changed. */ | |
2167 | if (o->lineno_count == 0 | |
2168 | || (o->output_section->flags & SEC_HAS_CONTENTS) == 0) | |
2169 | continue; | |
2170 | ||
2171 | if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0 | |
dc810e39 | 2172 | || bfd_bread (finfo->linenos, linesz * o->lineno_count, |
252b5132 RH |
2173 | input_bfd) != linesz * o->lineno_count) |
2174 | return false; | |
2175 | ||
2176 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2177 | eline = finfo->linenos; | |
b545f675 | 2178 | oeline = finfo->linenos; |
252b5132 | 2179 | elineend = eline + linesz * o->lineno_count; |
b545f675 | 2180 | skipping = false; |
252b5132 RH |
2181 | for (; eline < elineend; eline += linesz) |
2182 | { | |
2183 | struct internal_lineno iline; | |
2184 | ||
2185 | bfd_coff_swap_lineno_in (input_bfd, (PTR) eline, (PTR) &iline); | |
2186 | ||
2187 | if (iline.l_lnno != 0) | |
2188 | iline.l_addr.l_paddr += offset; | |
2189 | else if (iline.l_addr.l_symndx >= 0 | |
2190 | && ((unsigned long) iline.l_addr.l_symndx | |
2191 | < obj_raw_syment_count (input_bfd))) | |
2192 | { | |
2193 | long indx; | |
2194 | ||
2195 | indx = finfo->sym_indices[iline.l_addr.l_symndx]; | |
2196 | ||
2197 | if (indx < 0) | |
2198 | { | |
2199 | /* These line numbers are attached to a symbol | |
b545f675 ILT |
2200 | which we are stripping. We must discard the |
2201 | line numbers because reading them back with | |
2202 | no associated symbol (or associating them all | |
2203 | with symbol #0) will fail. We can't regain | |
2204 | the space in the output file, but at least | |
2205 | they're dense. */ | |
2206 | skipping = true; | |
252b5132 RH |
2207 | } |
2208 | else | |
2209 | { | |
2210 | struct internal_syment is; | |
2211 | union internal_auxent ia; | |
2212 | ||
2213 | /* Fix up the lnnoptr field in the aux entry of | |
2214 | the symbol. It turns out that we can't do | |
2215 | this when we modify the symbol aux entries, | |
2216 | because gas sometimes screws up the lnnoptr | |
2217 | field and makes it an offset from the start | |
2218 | of the line numbers rather than an absolute | |
2219 | file index. */ | |
2220 | bfd_coff_swap_sym_in (output_bfd, | |
2221 | (PTR) (finfo->outsyms | |
2222 | + ((indx - syment_base) | |
2223 | * osymesz)), | |
2224 | (PTR) &is); | |
2225 | if ((ISFCN (is.n_type) | |
2226 | || is.n_sclass == C_BLOCK) | |
2227 | && is.n_numaux >= 1) | |
2228 | { | |
2229 | PTR auxptr; | |
2230 | ||
2231 | auxptr = (PTR) (finfo->outsyms | |
2232 | + ((indx - syment_base + 1) | |
2233 | * osymesz)); | |
2234 | bfd_coff_swap_aux_in (output_bfd, auxptr, | |
2235 | is.n_type, is.n_sclass, | |
2236 | 0, is.n_numaux, (PTR) &ia); | |
2237 | ia.x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
2238 | (o->output_section->line_filepos | |
2239 | + o->output_section->lineno_count * linesz | |
2240 | + eline - finfo->linenos); | |
2241 | bfd_coff_swap_aux_out (output_bfd, (PTR) &ia, | |
2242 | is.n_type, is.n_sclass, 0, | |
2243 | is.n_numaux, auxptr); | |
2244 | } | |
b545f675 | 2245 | |
60bcf0fa | 2246 | skipping = false; |
252b5132 RH |
2247 | } |
2248 | ||
2249 | iline.l_addr.l_symndx = indx; | |
2250 | } | |
2251 | ||
b545f675 ILT |
2252 | if (!skipping) |
2253 | { | |
2254 | bfd_coff_swap_lineno_out (output_bfd, (PTR) &iline, | |
2255 | (PTR) oeline); | |
2256 | oeline += linesz; | |
2257 | } | |
252b5132 RH |
2258 | } |
2259 | ||
dc810e39 AM |
2260 | pos = o->output_section->line_filepos; |
2261 | pos += o->output_section->lineno_count * linesz; | |
2262 | amt = oeline - finfo->linenos; | |
2263 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2264 | || bfd_bwrite (finfo->linenos, amt, output_bfd) != amt) | |
252b5132 RH |
2265 | return false; |
2266 | ||
dc810e39 | 2267 | o->output_section->lineno_count += amt / linesz; |
252b5132 RH |
2268 | } |
2269 | } | |
2270 | ||
2271 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE | |
2272 | symbol will be the first symbol in the next input file. In the | |
2273 | normal case, this will save us from writing out the C_FILE symbol | |
2274 | again. */ | |
2275 | if (finfo->last_file_index != -1 | |
2276 | && (bfd_size_type) finfo->last_file_index >= syment_base) | |
2277 | { | |
2278 | finfo->last_file.n_value = output_index; | |
2279 | bfd_coff_swap_sym_out (output_bfd, (PTR) &finfo->last_file, | |
2280 | (PTR) (finfo->outsyms | |
2281 | + ((finfo->last_file_index - syment_base) | |
2282 | * osymesz))); | |
2283 | } | |
2284 | ||
2285 | /* Write the modified symbols to the output file. */ | |
2286 | if (outsym > finfo->outsyms) | |
2287 | { | |
dc810e39 AM |
2288 | file_ptr pos; |
2289 | bfd_size_type amt; | |
2290 | ||
2291 | pos = obj_sym_filepos (output_bfd) + syment_base * osymesz; | |
2292 | amt = outsym - finfo->outsyms; | |
2293 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2294 | || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt) | |
252b5132 RH |
2295 | return false; |
2296 | ||
2297 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) | |
2298 | + (outsym - finfo->outsyms) / osymesz) | |
2299 | == output_index); | |
2300 | ||
2301 | obj_raw_syment_count (output_bfd) = output_index; | |
2302 | } | |
2303 | ||
2304 | /* Relocate the contents of each section. */ | |
2305 | adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx; | |
2306 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2307 | { | |
2308 | bfd_byte *contents; | |
2309 | struct coff_section_tdata *secdata; | |
2310 | ||
2311 | if (! o->linker_mark) | |
2312 | { | |
2313 | /* This section was omitted from the link. */ | |
2314 | continue; | |
2315 | } | |
2316 | ||
2317 | if ((o->flags & SEC_HAS_CONTENTS) == 0 | |
2318 | || (o->_raw_size == 0 && (o->flags & SEC_RELOC) == 0)) | |
2319 | { | |
2320 | if ((o->flags & SEC_RELOC) != 0 | |
2321 | && o->reloc_count != 0) | |
2322 | { | |
2323 | ((*_bfd_error_handler) | |
2324 | (_("%s: relocs in section `%s', but it has no contents"), | |
8f615d07 | 2325 | bfd_archive_filename (input_bfd), |
252b5132 RH |
2326 | bfd_get_section_name (input_bfd, o))); |
2327 | bfd_set_error (bfd_error_no_contents); | |
2328 | return false; | |
2329 | } | |
2330 | ||
2331 | continue; | |
2332 | } | |
2333 | ||
2334 | secdata = coff_section_data (input_bfd, o); | |
2335 | if (secdata != NULL && secdata->contents != NULL) | |
2336 | contents = secdata->contents; | |
2337 | else | |
2338 | { | |
2339 | if (! bfd_get_section_contents (input_bfd, o, finfo->contents, | |
2340 | (file_ptr) 0, o->_raw_size)) | |
2341 | return false; | |
2342 | contents = finfo->contents; | |
2343 | } | |
2344 | ||
2345 | if ((o->flags & SEC_RELOC) != 0) | |
2346 | { | |
2347 | int target_index; | |
2348 | struct internal_reloc *internal_relocs; | |
2349 | struct internal_reloc *irel; | |
2350 | ||
2351 | /* Read in the relocs. */ | |
2352 | target_index = o->output_section->target_index; | |
2353 | internal_relocs = (_bfd_coff_read_internal_relocs | |
2354 | (input_bfd, o, false, finfo->external_relocs, | |
2355 | finfo->info->relocateable, | |
2356 | (finfo->info->relocateable | |
2357 | ? (finfo->section_info[target_index].relocs | |
2358 | + o->output_section->reloc_count) | |
2359 | : finfo->internal_relocs))); | |
2360 | if (internal_relocs == NULL) | |
2361 | return false; | |
2362 | ||
2363 | /* Call processor specific code to relocate the section | |
2364 | contents. */ | |
2365 | if (! bfd_coff_relocate_section (output_bfd, finfo->info, | |
2366 | input_bfd, o, | |
2367 | contents, | |
2368 | internal_relocs, | |
2369 | finfo->internal_syms, | |
2370 | finfo->sec_ptrs)) | |
2371 | return false; | |
2372 | ||
2373 | if (finfo->info->relocateable) | |
2374 | { | |
2375 | bfd_vma offset; | |
2376 | struct internal_reloc *irelend; | |
2377 | struct coff_link_hash_entry **rel_hash; | |
2378 | ||
2379 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2380 | irel = internal_relocs; | |
2381 | irelend = irel + o->reloc_count; | |
2382 | rel_hash = (finfo->section_info[target_index].rel_hashes | |
2383 | + o->output_section->reloc_count); | |
2384 | for (; irel < irelend; irel++, rel_hash++) | |
2385 | { | |
2386 | struct coff_link_hash_entry *h; | |
2387 | boolean adjusted; | |
2388 | ||
2389 | *rel_hash = NULL; | |
2390 | ||
2391 | /* Adjust the reloc address and symbol index. */ | |
2392 | ||
2393 | irel->r_vaddr += offset; | |
2394 | ||
2395 | if (irel->r_symndx == -1) | |
2396 | continue; | |
2397 | ||
2398 | if (adjust_symndx) | |
2399 | { | |
2400 | if (! (*adjust_symndx) (output_bfd, finfo->info, | |
2401 | input_bfd, o, irel, | |
2402 | &adjusted)) | |
2403 | return false; | |
2404 | if (adjusted) | |
2405 | continue; | |
2406 | } | |
2407 | ||
2408 | h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx]; | |
2409 | if (h != NULL) | |
2410 | { | |
2411 | /* This is a global symbol. */ | |
2412 | if (h->indx >= 0) | |
2413 | irel->r_symndx = h->indx; | |
2414 | else | |
2415 | { | |
2416 | /* This symbol is being written at the end | |
2417 | of the file, and we do not yet know the | |
2418 | symbol index. We save the pointer to the | |
2419 | hash table entry in the rel_hash list. | |
2420 | We set the indx field to -2 to indicate | |
2421 | that this symbol must not be stripped. */ | |
2422 | *rel_hash = h; | |
2423 | h->indx = -2; | |
2424 | } | |
2425 | } | |
2426 | else | |
2427 | { | |
2428 | long indx; | |
2429 | ||
2430 | indx = finfo->sym_indices[irel->r_symndx]; | |
2431 | if (indx != -1) | |
2432 | irel->r_symndx = indx; | |
2433 | else | |
2434 | { | |
2435 | struct internal_syment *is; | |
2436 | const char *name; | |
2437 | char buf[SYMNMLEN + 1]; | |
2438 | ||
2439 | /* This reloc is against a symbol we are | |
2440 | stripping. This should have been handled | |
2441 | by the 'dont_skip_symbol' code in the while | |
244148ad KH |
2442 | loop at the top of this function. */ |
2443 | ||
252b5132 RH |
2444 | is = finfo->internal_syms + irel->r_symndx; |
2445 | ||
2446 | name = (_bfd_coff_internal_syment_name | |
2447 | (input_bfd, is, buf)); | |
2448 | if (name == NULL) | |
2449 | return false; | |
2450 | ||
2451 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2452 | (finfo->info, name, input_bfd, o, | |
2453 | irel->r_vaddr))) | |
2454 | return false; | |
2455 | } | |
2456 | } | |
2457 | } | |
2458 | ||
2459 | o->output_section->reloc_count += o->reloc_count; | |
2460 | } | |
2461 | } | |
2462 | ||
2463 | /* Write out the modified section contents. */ | |
2464 | if (secdata == NULL || secdata->stab_info == NULL) | |
2465 | { | |
dc810e39 AM |
2466 | file_ptr loc = o->output_offset * bfd_octets_per_byte (output_bfd); |
2467 | bfd_size_type amt = (o->_cooked_size != 0 | |
2468 | ? o->_cooked_size : o->_raw_size); | |
252b5132 | 2469 | if (! bfd_set_section_contents (output_bfd, o->output_section, |
dc810e39 | 2470 | contents, loc, amt)) |
252b5132 RH |
2471 | return false; |
2472 | } | |
2473 | else | |
2474 | { | |
2475 | if (! (_bfd_write_section_stabs | |
2476 | (output_bfd, &coff_hash_table (finfo->info)->stab_info, | |
2477 | o, &secdata->stab_info, contents))) | |
2478 | return false; | |
2479 | } | |
2480 | } | |
2481 | ||
2482 | if (! finfo->info->keep_memory) | |
2483 | { | |
2484 | if (! _bfd_coff_free_symbols (input_bfd)) | |
2485 | return false; | |
2486 | } | |
2487 | ||
2488 | return true; | |
2489 | } | |
2490 | ||
2491 | /* Write out a global symbol. Called via coff_link_hash_traverse. */ | |
2492 | ||
2493 | boolean | |
2494 | _bfd_coff_write_global_sym (h, data) | |
2495 | struct coff_link_hash_entry *h; | |
2496 | PTR data; | |
2497 | { | |
2498 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
2499 | bfd *output_bfd; | |
2500 | struct internal_syment isym; | |
2501 | bfd_size_type symesz; | |
2502 | unsigned int i; | |
dc810e39 | 2503 | file_ptr pos; |
252b5132 RH |
2504 | |
2505 | output_bfd = finfo->output_bfd; | |
2506 | ||
e92d460e AM |
2507 | if (h->root.type == bfd_link_hash_warning) |
2508 | { | |
2509 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2510 | if (h->root.type == bfd_link_hash_new) | |
2511 | return true; | |
2512 | } | |
2513 | ||
252b5132 RH |
2514 | if (h->indx >= 0) |
2515 | return true; | |
2516 | ||
2517 | if (h->indx != -2 | |
2518 | && (finfo->info->strip == strip_all | |
2519 | || (finfo->info->strip == strip_some | |
2520 | && (bfd_hash_lookup (finfo->info->keep_hash, | |
2521 | h->root.root.string, false, false) | |
2522 | == NULL)))) | |
2523 | return true; | |
2524 | ||
2525 | switch (h->root.type) | |
2526 | { | |
2527 | default: | |
2528 | case bfd_link_hash_new: | |
e92d460e | 2529 | case bfd_link_hash_warning: |
252b5132 RH |
2530 | abort (); |
2531 | return false; | |
2532 | ||
2533 | case bfd_link_hash_undefined: | |
2534 | case bfd_link_hash_undefweak: | |
2535 | isym.n_scnum = N_UNDEF; | |
2536 | isym.n_value = 0; | |
2537 | break; | |
2538 | ||
2539 | case bfd_link_hash_defined: | |
2540 | case bfd_link_hash_defweak: | |
2541 | { | |
2542 | asection *sec; | |
2543 | ||
2544 | sec = h->root.u.def.section->output_section; | |
2545 | if (bfd_is_abs_section (sec)) | |
2546 | isym.n_scnum = N_ABS; | |
2547 | else | |
2548 | isym.n_scnum = sec->target_index; | |
2549 | isym.n_value = (h->root.u.def.value | |
2550 | + h->root.u.def.section->output_offset); | |
2551 | if (! obj_pe (finfo->output_bfd)) | |
2552 | isym.n_value += sec->vma; | |
2553 | } | |
2554 | break; | |
2555 | ||
2556 | case bfd_link_hash_common: | |
2557 | isym.n_scnum = N_UNDEF; | |
2558 | isym.n_value = h->root.u.c.size; | |
2559 | break; | |
2560 | ||
2561 | case bfd_link_hash_indirect: | |
252b5132 RH |
2562 | /* Just ignore these. They can't be handled anyhow. */ |
2563 | return true; | |
2564 | } | |
2565 | ||
2566 | if (strlen (h->root.root.string) <= SYMNMLEN) | |
2567 | strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); | |
2568 | else | |
2569 | { | |
2570 | boolean hash; | |
2571 | bfd_size_type indx; | |
2572 | ||
2573 | hash = true; | |
2574 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
2575 | hash = false; | |
2576 | indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash, | |
2577 | false); | |
2578 | if (indx == (bfd_size_type) -1) | |
2579 | { | |
2580 | finfo->failed = true; | |
2581 | return false; | |
2582 | } | |
2583 | isym._n._n_n._n_zeroes = 0; | |
2584 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
2585 | } | |
2586 | ||
2587 | isym.n_sclass = h->class; | |
2588 | isym.n_type = h->type; | |
2589 | ||
2590 | if (isym.n_sclass == C_NULL) | |
2591 | isym.n_sclass = C_EXT; | |
2592 | ||
2593 | /* If doing task linking and this is the pass where we convert | |
2594 | defined globals to statics, then do that conversion now. If the | |
2595 | symbol is not being converted, just ignore it and it will be | |
e4202681 | 2596 | output during a later pass. */ |
252b5132 RH |
2597 | if (finfo->global_to_static) |
2598 | { | |
e4202681 NC |
2599 | if (! IS_EXTERNAL (output_bfd, isym)) |
2600 | return true; | |
2601 | ||
252b5132 RH |
2602 | isym.n_sclass = C_STAT; |
2603 | } | |
2604 | ||
e4202681 NC |
2605 | /* When a weak symbol is not overriden by a strong one, |
2606 | turn it into an external symbol when not building a | |
2607 | shared or relocateable object. */ | |
2608 | if (! finfo->info->shared | |
2609 | && ! finfo->info->relocateable | |
2610 | && IS_WEAK_EXTERNAL (finfo->output_bfd, isym)) | |
2611 | isym.n_sclass = C_EXT; | |
2612 | ||
252b5132 | 2613 | isym.n_numaux = h->numaux; |
244148ad | 2614 | |
252b5132 RH |
2615 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) finfo->outsyms); |
2616 | ||
2617 | symesz = bfd_coff_symesz (output_bfd); | |
2618 | ||
dc810e39 AM |
2619 | pos = obj_sym_filepos (output_bfd); |
2620 | pos += obj_raw_syment_count (output_bfd) * symesz; | |
2621 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2622 | || bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz) | |
252b5132 RH |
2623 | { |
2624 | finfo->failed = true; | |
2625 | return false; | |
2626 | } | |
2627 | ||
2628 | h->indx = obj_raw_syment_count (output_bfd); | |
2629 | ||
2630 | ++obj_raw_syment_count (output_bfd); | |
2631 | ||
2c546cd8 ILT |
2632 | /* Write out any associated aux entries. Most of the aux entries |
2633 | will have been modified in _bfd_coff_link_input_bfd. We have to | |
2634 | handle section aux entries here, now that we have the final | |
2635 | relocation and line number counts. */ | |
252b5132 RH |
2636 | for (i = 0; i < isym.n_numaux; i++) |
2637 | { | |
2c546cd8 ILT |
2638 | union internal_auxent *auxp; |
2639 | ||
2640 | auxp = h->aux + i; | |
2641 | ||
2642 | /* Look for a section aux entry here using the same tests that | |
2643 | coff_swap_aux_out uses. */ | |
2644 | if (i == 0 | |
2645 | && (isym.n_sclass == C_STAT | |
2646 | || isym.n_sclass == C_HIDDEN) | |
2647 | && isym.n_type == T_NULL | |
2648 | && (h->root.type == bfd_link_hash_defined | |
2649 | || h->root.type == bfd_link_hash_defweak)) | |
2650 | { | |
2651 | asection *sec; | |
2652 | ||
2653 | sec = h->root.u.def.section->output_section; | |
2654 | if (sec != NULL) | |
2655 | { | |
2656 | auxp->x_scn.x_scnlen = (sec->_cooked_size != 0 | |
2657 | ? sec->_cooked_size | |
2658 | : sec->_raw_size); | |
2659 | ||
2660 | /* For PE, an overflow on the final link reportedly does | |
2661 | not matter. FIXME: Why not? */ | |
2662 | ||
2663 | if (sec->reloc_count > 0xffff | |
2664 | && (! obj_pe (output_bfd) | |
2665 | || finfo->info->relocateable)) | |
2666 | (*_bfd_error_handler) | |
2667 | (_("%s: %s: reloc overflow: 0x%lx > 0xffff"), | |
2668 | bfd_get_filename (output_bfd), | |
2669 | bfd_get_section_name (output_bfd, sec), | |
2670 | sec->reloc_count); | |
2671 | ||
2672 | if (sec->lineno_count > 0xffff | |
2673 | && (! obj_pe (output_bfd) | |
2674 | || finfo->info->relocateable)) | |
2675 | (*_bfd_error_handler) | |
2676 | (_("%s: warning: %s: line number overflow: 0x%lx > 0xffff"), | |
2677 | bfd_get_filename (output_bfd), | |
2678 | bfd_get_section_name (output_bfd, sec), | |
2679 | sec->lineno_count); | |
2680 | ||
2681 | auxp->x_scn.x_nreloc = sec->reloc_count; | |
2682 | auxp->x_scn.x_nlinno = sec->lineno_count; | |
2683 | auxp->x_scn.x_checksum = 0; | |
2684 | auxp->x_scn.x_associated = 0; | |
2685 | auxp->x_scn.x_comdat = 0; | |
2686 | } | |
2687 | } | |
2688 | ||
2689 | bfd_coff_swap_aux_out (output_bfd, (PTR) auxp, isym.n_type, | |
dc810e39 | 2690 | isym.n_sclass, (int) i, isym.n_numaux, |
252b5132 | 2691 | (PTR) finfo->outsyms); |
dc810e39 | 2692 | if (bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz) |
252b5132 RH |
2693 | { |
2694 | finfo->failed = true; | |
2695 | return false; | |
2696 | } | |
2697 | ++obj_raw_syment_count (output_bfd); | |
2698 | } | |
2699 | ||
2700 | return true; | |
2701 | } | |
2702 | ||
2703 | /* Write out task global symbols, converting them to statics. Called | |
2704 | via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do | |
244148ad | 2705 | the dirty work, if the symbol we are processing needs conversion. */ |
252b5132 RH |
2706 | |
2707 | boolean | |
2708 | _bfd_coff_write_task_globals (h, data) | |
2709 | struct coff_link_hash_entry *h; | |
2710 | PTR data; | |
2711 | { | |
2712 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
2713 | boolean rtnval = true; | |
2714 | boolean save_global_to_static; | |
2715 | ||
e92d460e AM |
2716 | if (h->root.type == bfd_link_hash_warning) |
2717 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2718 | ||
252b5132 RH |
2719 | if (h->indx < 0) |
2720 | { | |
2721 | switch (h->root.type) | |
2722 | { | |
2723 | case bfd_link_hash_defined: | |
2724 | case bfd_link_hash_defweak: | |
2725 | save_global_to_static = finfo->global_to_static; | |
2726 | finfo->global_to_static = true; | |
2727 | rtnval = _bfd_coff_write_global_sym (h, data); | |
2728 | finfo->global_to_static = save_global_to_static; | |
2729 | break; | |
2730 | default: | |
2731 | break; | |
2732 | } | |
2733 | } | |
2734 | return (rtnval); | |
2735 | } | |
2736 | ||
2737 | /* Handle a link order which is supposed to generate a reloc. */ | |
2738 | ||
2739 | boolean | |
2740 | _bfd_coff_reloc_link_order (output_bfd, finfo, output_section, link_order) | |
2741 | bfd *output_bfd; | |
2742 | struct coff_final_link_info *finfo; | |
2743 | asection *output_section; | |
2744 | struct bfd_link_order *link_order; | |
2745 | { | |
2746 | reloc_howto_type *howto; | |
2747 | struct internal_reloc *irel; | |
2748 | struct coff_link_hash_entry **rel_hash_ptr; | |
2749 | ||
2750 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); | |
2751 | if (howto == NULL) | |
2752 | { | |
2753 | bfd_set_error (bfd_error_bad_value); | |
2754 | return false; | |
2755 | } | |
2756 | ||
2757 | if (link_order->u.reloc.p->addend != 0) | |
2758 | { | |
2759 | bfd_size_type size; | |
2760 | bfd_byte *buf; | |
2761 | bfd_reloc_status_type rstat; | |
2762 | boolean ok; | |
dc810e39 | 2763 | file_ptr loc; |
252b5132 RH |
2764 | |
2765 | size = bfd_get_reloc_size (howto); | |
2766 | buf = (bfd_byte *) bfd_zmalloc (size); | |
2767 | if (buf == NULL) | |
2768 | return false; | |
2769 | ||
2770 | rstat = _bfd_relocate_contents (howto, output_bfd, | |
dc810e39 AM |
2771 | (bfd_vma) link_order->u.reloc.p->addend,\ |
2772 | buf); | |
252b5132 RH |
2773 | switch (rstat) |
2774 | { | |
2775 | case bfd_reloc_ok: | |
2776 | break; | |
2777 | default: | |
2778 | case bfd_reloc_outofrange: | |
2779 | abort (); | |
2780 | case bfd_reloc_overflow: | |
2781 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
2782 | (finfo->info, | |
2783 | (link_order->type == bfd_section_reloc_link_order | |
2784 | ? bfd_section_name (output_bfd, | |
2785 | link_order->u.reloc.p->u.section) | |
2786 | : link_order->u.reloc.p->u.name), | |
2787 | howto->name, link_order->u.reloc.p->addend, | |
2788 | (bfd *) NULL, (asection *) NULL, (bfd_vma) 0))) | |
2789 | { | |
2790 | free (buf); | |
2791 | return false; | |
2792 | } | |
2793 | break; | |
2794 | } | |
dc810e39 | 2795 | loc = link_order->offset * bfd_octets_per_byte (output_bfd); |
252b5132 | 2796 | ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf, |
dc810e39 | 2797 | loc, size); |
252b5132 RH |
2798 | free (buf); |
2799 | if (! ok) | |
2800 | return false; | |
2801 | } | |
2802 | ||
2803 | /* Store the reloc information in the right place. It will get | |
2804 | swapped and written out at the end of the final_link routine. */ | |
2805 | ||
2806 | irel = (finfo->section_info[output_section->target_index].relocs | |
2807 | + output_section->reloc_count); | |
2808 | rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes | |
2809 | + output_section->reloc_count); | |
2810 | ||
2811 | memset (irel, 0, sizeof (struct internal_reloc)); | |
2812 | *rel_hash_ptr = NULL; | |
2813 | ||
2814 | irel->r_vaddr = output_section->vma + link_order->offset; | |
2815 | ||
2816 | if (link_order->type == bfd_section_reloc_link_order) | |
2817 | { | |
2818 | /* We need to somehow locate a symbol in the right section. The | |
2819 | symbol must either have a value of zero, or we must adjust | |
2820 | the addend by the value of the symbol. FIXME: Write this | |
2821 | when we need it. The old linker couldn't handle this anyhow. */ | |
2822 | abort (); | |
2823 | *rel_hash_ptr = NULL; | |
2824 | irel->r_symndx = 0; | |
2825 | } | |
2826 | else | |
2827 | { | |
2828 | struct coff_link_hash_entry *h; | |
2829 | ||
2830 | h = ((struct coff_link_hash_entry *) | |
2831 | bfd_wrapped_link_hash_lookup (output_bfd, finfo->info, | |
2832 | link_order->u.reloc.p->u.name, | |
2833 | false, false, true)); | |
2834 | if (h != NULL) | |
2835 | { | |
2836 | if (h->indx >= 0) | |
2837 | irel->r_symndx = h->indx; | |
2838 | else | |
2839 | { | |
2840 | /* Set the index to -2 to force this symbol to get | |
2841 | written out. */ | |
2842 | h->indx = -2; | |
2843 | *rel_hash_ptr = h; | |
2844 | irel->r_symndx = 0; | |
2845 | } | |
2846 | } | |
2847 | else | |
2848 | { | |
2849 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2850 | (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL, | |
2851 | (asection *) NULL, (bfd_vma) 0))) | |
2852 | return false; | |
2853 | irel->r_symndx = 0; | |
2854 | } | |
2855 | } | |
2856 | ||
2857 | /* FIXME: Is this always right? */ | |
2858 | irel->r_type = howto->type; | |
2859 | ||
2860 | /* r_size is only used on the RS/6000, which needs its own linker | |
2861 | routines anyhow. r_extern is only used for ECOFF. */ | |
2862 | ||
2863 | /* FIXME: What is the right value for r_offset? Is zero OK? */ | |
2864 | ||
2865 | ++output_section->reloc_count; | |
2866 | ||
2867 | return true; | |
2868 | } | |
2869 | ||
2870 | /* A basic reloc handling routine which may be used by processors with | |
2871 | simple relocs. */ | |
2872 | ||
2873 | boolean | |
2874 | _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd, | |
2875 | input_section, contents, relocs, syms, | |
2876 | sections) | |
2877 | bfd *output_bfd; | |
2878 | struct bfd_link_info *info; | |
2879 | bfd *input_bfd; | |
2880 | asection *input_section; | |
2881 | bfd_byte *contents; | |
2882 | struct internal_reloc *relocs; | |
2883 | struct internal_syment *syms; | |
2884 | asection **sections; | |
2885 | { | |
2886 | struct internal_reloc *rel; | |
2887 | struct internal_reloc *relend; | |
2888 | ||
2889 | rel = relocs; | |
2890 | relend = rel + input_section->reloc_count; | |
2891 | for (; rel < relend; rel++) | |
2892 | { | |
2893 | long symndx; | |
2894 | struct coff_link_hash_entry *h; | |
2895 | struct internal_syment *sym; | |
2896 | bfd_vma addend; | |
2897 | bfd_vma val; | |
2898 | reloc_howto_type *howto; | |
2899 | bfd_reloc_status_type rstat; | |
2900 | ||
2901 | symndx = rel->r_symndx; | |
2902 | ||
2903 | if (symndx == -1) | |
2904 | { | |
2905 | h = NULL; | |
2906 | sym = NULL; | |
2907 | } | |
75987f83 ILT |
2908 | else if (symndx < 0 |
2909 | || (unsigned long) symndx >= obj_raw_syment_count (input_bfd)) | |
2910 | { | |
2911 | (*_bfd_error_handler) | |
2912 | ("%s: illegal symbol index %ld in relocs", | |
8f615d07 | 2913 | bfd_archive_filename (input_bfd), symndx); |
75987f83 ILT |
2914 | return false; |
2915 | } | |
252b5132 | 2916 | else |
244148ad | 2917 | { |
252b5132 RH |
2918 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
2919 | sym = syms + symndx; | |
2920 | } | |
2921 | ||
2922 | /* COFF treats common symbols in one of two ways. Either the | |
2923 | size of the symbol is included in the section contents, or it | |
2924 | is not. We assume that the size is not included, and force | |
2925 | the rtype_to_howto function to adjust the addend as needed. */ | |
2926 | ||
2927 | if (sym != NULL && sym->n_scnum != 0) | |
2928 | addend = - sym->n_value; | |
2929 | else | |
2930 | addend = 0; | |
2931 | ||
252b5132 RH |
2932 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
2933 | sym, &addend); | |
2934 | if (howto == NULL) | |
2935 | return false; | |
2936 | ||
2937 | /* If we are doing a relocateable link, then we can just ignore | |
2938 | a PC relative reloc that is pcrel_offset. It will already | |
2939 | have the correct value. If this is not a relocateable link, | |
2940 | then we should ignore the symbol value. */ | |
2941 | if (howto->pc_relative && howto->pcrel_offset) | |
2942 | { | |
2943 | if (info->relocateable) | |
2944 | continue; | |
2945 | if (sym != NULL && sym->n_scnum != 0) | |
2946 | addend += sym->n_value; | |
2947 | } | |
2948 | ||
2949 | val = 0; | |
2950 | ||
2951 | if (h == NULL) | |
2952 | { | |
2953 | asection *sec; | |
2954 | ||
2955 | if (symndx == -1) | |
2956 | { | |
2957 | sec = bfd_abs_section_ptr; | |
2958 | val = 0; | |
2959 | } | |
2960 | else | |
2961 | { | |
2962 | sec = sections[symndx]; | |
2963 | val = (sec->output_section->vma | |
2964 | + sec->output_offset | |
2965 | + sym->n_value); | |
2966 | if (! obj_pe (input_bfd)) | |
2967 | val -= sec->vma; | |
2968 | } | |
2969 | } | |
2970 | else | |
2971 | { | |
2972 | if (h->root.type == bfd_link_hash_defined | |
2973 | || h->root.type == bfd_link_hash_defweak) | |
2974 | { | |
2975 | asection *sec; | |
2976 | ||
2977 | sec = h->root.u.def.section; | |
2978 | val = (h->root.u.def.value | |
2979 | + sec->output_section->vma | |
2980 | + sec->output_offset); | |
2981 | } | |
2982 | ||
bc7a577d PB |
2983 | else if (h->root.type == bfd_link_hash_undefweak) |
2984 | val = 0; | |
2985 | ||
252b5132 RH |
2986 | else if (! info->relocateable) |
2987 | { | |
2988 | if (! ((*info->callbacks->undefined_symbol) | |
2989 | (info, h->root.root.string, input_bfd, input_section, | |
5cc7c785 | 2990 | rel->r_vaddr - input_section->vma, true))) |
252b5132 RH |
2991 | return false; |
2992 | } | |
2993 | } | |
2994 | ||
2995 | if (info->base_file) | |
2996 | { | |
244148ad | 2997 | /* Emit a reloc if the backend thinks it needs it. */ |
252b5132 RH |
2998 | if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto)) |
2999 | { | |
3000 | /* Relocation to a symbol in a section which isn't | |
3001 | absolute. We output the address here to a file. | |
3002 | This file is then read by dlltool when generating the | |
3003 | reloc section. Note that the base file is not | |
3004 | portable between systems. We write out a long here, | |
3005 | and dlltool reads in a long. */ | |
244148ad KH |
3006 | long addr = (rel->r_vaddr |
3007 | - input_section->vma | |
3008 | + input_section->output_offset | |
252b5132 RH |
3009 | + input_section->output_section->vma); |
3010 | if (coff_data (output_bfd)->pe) | |
3011 | addr -= pe_data(output_bfd)->pe_opthdr.ImageBase; | |
3012 | if (fwrite (&addr, 1, sizeof (long), (FILE *) info->base_file) | |
3013 | != sizeof (long)) | |
3014 | { | |
3015 | bfd_set_error (bfd_error_system_call); | |
3016 | return false; | |
3017 | } | |
3018 | } | |
3019 | } | |
244148ad | 3020 | |
252b5132 RH |
3021 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3022 | contents, | |
3023 | rel->r_vaddr - input_section->vma, | |
3024 | val, addend); | |
3025 | ||
3026 | switch (rstat) | |
3027 | { | |
3028 | default: | |
3029 | abort (); | |
3030 | case bfd_reloc_ok: | |
3031 | break; | |
3032 | case bfd_reloc_outofrange: | |
3033 | (*_bfd_error_handler) | |
3034 | (_("%s: bad reloc address 0x%lx in section `%s'"), | |
8f615d07 | 3035 | bfd_archive_filename (input_bfd), |
252b5132 RH |
3036 | (unsigned long) rel->r_vaddr, |
3037 | bfd_get_section_name (input_bfd, input_section)); | |
3038 | return false; | |
3039 | case bfd_reloc_overflow: | |
3040 | { | |
3041 | const char *name; | |
3042 | char buf[SYMNMLEN + 1]; | |
3043 | ||
3044 | if (symndx == -1) | |
3045 | name = "*ABS*"; | |
3046 | else if (h != NULL) | |
3047 | name = h->root.root.string; | |
3048 | else | |
3049 | { | |
3050 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
3051 | if (name == NULL) | |
3052 | return false; | |
3053 | } | |
3054 | ||
3055 | if (! ((*info->callbacks->reloc_overflow) | |
3056 | (info, name, howto->name, (bfd_vma) 0, input_bfd, | |
3057 | input_section, rel->r_vaddr - input_section->vma))) | |
3058 | return false; | |
3059 | } | |
3060 | } | |
3061 | } | |
3062 | return true; | |
3063 | } |