Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* COFF specific linker code. |
7898deda NC |
2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | Written by Ian Lance Taylor, Cygnus Support. |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | /* This file contains 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; | |
120 | ||
121 | ret = ((struct coff_link_hash_table *) | |
122 | bfd_alloc (abfd, sizeof (struct coff_link_hash_table))); | |
123 | if (ret == NULL) | |
124 | return NULL; | |
125 | if (! _bfd_coff_link_hash_table_init (ret, abfd, | |
126 | _bfd_coff_link_hash_newfunc)) | |
127 | { | |
128 | bfd_release (abfd, ret); | |
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; | |
328 | ||
329 | /* Keep the symbols during this function, in case the linker needs | |
330 | to read the generic symbols in order to report an error message. */ | |
331 | keep_syms = obj_coff_keep_syms (abfd); | |
332 | obj_coff_keep_syms (abfd) = true; | |
333 | ||
252b5132 RH |
334 | if (info->keep_memory) |
335 | default_copy = false; | |
336 | else | |
337 | default_copy = true; | |
338 | ||
339 | symcount = obj_raw_syment_count (abfd); | |
340 | ||
341 | /* We keep a list of the linker hash table entries that correspond | |
342 | to particular symbols. */ | |
343 | sym_hash = ((struct coff_link_hash_entry **) | |
344 | bfd_alloc (abfd, | |
345 | ((size_t) symcount | |
346 | * sizeof (struct coff_link_hash_entry *)))); | |
347 | if (sym_hash == NULL && symcount != 0) | |
348 | goto error_return; | |
349 | obj_coff_sym_hashes (abfd) = sym_hash; | |
350 | memset (sym_hash, 0, | |
351 | (size_t) symcount * sizeof (struct coff_link_hash_entry *)); | |
352 | ||
353 | symesz = bfd_coff_symesz (abfd); | |
354 | BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); | |
355 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
356 | esym_end = esym + symcount * symesz; | |
357 | while (esym < esym_end) | |
358 | { | |
359 | struct internal_syment sym; | |
5d54c628 | 360 | enum coff_symbol_classification classification; |
252b5132 RH |
361 | boolean copy; |
362 | ||
363 | bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); | |
364 | ||
5d54c628 ILT |
365 | classification = bfd_coff_classify_symbol (abfd, &sym); |
366 | if (classification != COFF_SYMBOL_LOCAL) | |
252b5132 RH |
367 | { |
368 | const char *name; | |
369 | char buf[SYMNMLEN + 1]; | |
370 | flagword flags; | |
371 | asection *section; | |
372 | bfd_vma value; | |
7fd9c191 | 373 | boolean addit; |
252b5132 RH |
374 | |
375 | /* This symbol is externally visible. */ | |
376 | ||
377 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
378 | if (name == NULL) | |
379 | goto error_return; | |
380 | ||
381 | /* We must copy the name into memory if we got it from the | |
382 | syment itself, rather than the string table. */ | |
383 | copy = default_copy; | |
384 | if (sym._n._n_n._n_zeroes != 0 | |
385 | || sym._n._n_n._n_offset == 0) | |
386 | copy = true; | |
387 | ||
388 | value = sym.n_value; | |
389 | ||
5d54c628 | 390 | switch (classification) |
252b5132 | 391 | { |
5d54c628 ILT |
392 | default: |
393 | abort (); | |
394 | ||
395 | case COFF_SYMBOL_GLOBAL: | |
252b5132 RH |
396 | flags = BSF_EXPORT | BSF_GLOBAL; |
397 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
398 | if (! obj_pe (abfd)) | |
399 | value -= section->vma; | |
5d54c628 ILT |
400 | break; |
401 | ||
402 | case COFF_SYMBOL_UNDEFINED: | |
403 | flags = 0; | |
404 | section = bfd_und_section_ptr; | |
405 | break; | |
406 | ||
407 | case COFF_SYMBOL_COMMON: | |
408 | flags = BSF_GLOBAL; | |
409 | section = bfd_com_section_ptr; | |
410 | break; | |
411 | ||
412 | case COFF_SYMBOL_PE_SECTION: | |
413 | flags = BSF_SECTION_SYM | BSF_GLOBAL; | |
414 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
415 | break; | |
252b5132 RH |
416 | } |
417 | ||
e4202681 | 418 | if (IS_WEAK_EXTERNAL (abfd, sym)) |
252b5132 RH |
419 | flags = BSF_WEAK; |
420 | ||
7fd9c191 ILT |
421 | addit = true; |
422 | ||
423 | /* In the PE format, section symbols actually refer to the | |
424 | start of the output section. We handle them specially | |
425 | here. */ | |
426 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) | |
427 | { | |
428 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
429 | name, false, copy, false); | |
430 | if (*sym_hash != NULL) | |
431 | { | |
432 | if (((*sym_hash)->coff_link_hash_flags | |
433 | & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0 | |
434 | && (*sym_hash)->root.type != bfd_link_hash_undefined | |
435 | && (*sym_hash)->root.type != bfd_link_hash_undefweak) | |
436 | (*_bfd_error_handler) | |
437 | ("Warning: symbol `%s' is both section and non-section", | |
438 | name); | |
439 | ||
440 | addit = false; | |
441 | } | |
442 | } | |
443 | ||
49147fca ILT |
444 | /* The Microsoft Visual C compiler does string pooling by |
445 | hashing the constants to an internal symbol name, and | |
446 | relying on the the linker comdat support to discard | |
447 | duplicate names. However, if one string is a literal and | |
448 | one is a data initializer, one will end up in the .data | |
449 | section and one will end up in the .rdata section. The | |
450 | Microsoft linker will combine them into the .data | |
451 | section, which seems to be wrong since it might cause the | |
452 | literal to change. | |
453 | ||
454 | As long as there are no external references to the | |
455 | symbols, which there shouldn't be, we can treat the .data | |
456 | and .rdata instances as separate symbols. The comdat | |
457 | code in the linker will do the appropriate merging. Here | |
458 | we avoid getting a multiple definition error for one of | |
459 | these special symbols. | |
460 | ||
461 | FIXME: I don't think this will work in the case where | |
462 | there are two object files which use the constants as a | |
463 | literal and two object files which use it as a data | |
464 | initializer. One or the other of the second object files | |
465 | is going to wind up with an inappropriate reference. */ | |
466 | if (obj_pe (abfd) | |
467 | && (classification == COFF_SYMBOL_GLOBAL | |
468 | || classification == COFF_SYMBOL_PE_SECTION) | |
469 | && section->comdat != NULL | |
470 | && strncmp (name, "??_", 3) == 0 | |
471 | && strcmp (name, section->comdat->name) == 0) | |
472 | { | |
473 | if (*sym_hash == NULL) | |
474 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
475 | name, false, copy, false); | |
476 | if (*sym_hash != NULL | |
477 | && (*sym_hash)->root.type == bfd_link_hash_defined | |
478 | && (*sym_hash)->root.u.def.section->comdat != NULL | |
479 | && strcmp ((*sym_hash)->root.u.def.section->comdat->name, | |
480 | section->comdat->name) == 0) | |
481 | addit = false; | |
482 | } | |
483 | ||
7fd9c191 ILT |
484 | if (addit) |
485 | { | |
486 | if (! (bfd_coff_link_add_one_symbol | |
487 | (info, abfd, name, flags, section, value, | |
488 | (const char *) NULL, copy, false, | |
489 | (struct bfd_link_hash_entry **) sym_hash))) | |
490 | goto error_return; | |
491 | } | |
492 | ||
493 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) | |
494 | (*sym_hash)->coff_link_hash_flags |= | |
495 | COFF_LINK_HASH_PE_SECTION_SYMBOL; | |
252b5132 | 496 | |
2820a0b7 ILT |
497 | /* Limit the alignment of a common symbol to the possible |
498 | alignment of a section. There is no point to permitting | |
499 | a higher alignment for a common symbol: we can not | |
500 | guarantee it, and it may cause us to allocate extra space | |
501 | in the common section. */ | |
252b5132 RH |
502 | if (section == bfd_com_section_ptr |
503 | && (*sym_hash)->root.type == bfd_link_hash_common | |
504 | && ((*sym_hash)->root.u.c.p->alignment_power | |
505 | > bfd_coff_default_section_alignment_power (abfd))) | |
506 | (*sym_hash)->root.u.c.p->alignment_power | |
507 | = bfd_coff_default_section_alignment_power (abfd); | |
508 | ||
509 | if (info->hash->creator->flavour == bfd_get_flavour (abfd)) | |
510 | { | |
5d3aaa74 ILT |
511 | /* If we don't have any symbol information currently in |
512 | the hash table, or if we are looking at a symbol | |
513 | definition, then update the symbol class and type in | |
514 | the hash table. */ | |
515 | if (((*sym_hash)->class == C_NULL | |
516 | && (*sym_hash)->type == T_NULL) | |
517 | || sym.n_scnum != 0 | |
518 | || (sym.n_value != 0 | |
519 | && (*sym_hash)->root.type != bfd_link_hash_defined | |
520 | && (*sym_hash)->root.type != bfd_link_hash_defweak)) | |
521 | { | |
522 | (*sym_hash)->class = sym.n_sclass; | |
523 | if (sym.n_type != T_NULL) | |
524 | { | |
525 | /* We want to warn if the type changed, but not | |
526 | if it changed from an unspecified type. | |
527 | Testing the whole type byte may work, but the | |
528 | change from (e.g.) a function of unspecified | |
529 | type to function of known type also wants to | |
530 | skip the warning. */ | |
531 | if ((*sym_hash)->type != T_NULL | |
532 | && (*sym_hash)->type != sym.n_type | |
533 | && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type) | |
534 | && (BTYPE ((*sym_hash)->type) == T_NULL | |
535 | || BTYPE (sym.n_type) == T_NULL))) | |
536 | (*_bfd_error_handler) | |
537 | (_("Warning: type of symbol `%s' changed from %d to %d in %s"), | |
538 | name, (*sym_hash)->type, sym.n_type, | |
539 | bfd_get_filename (abfd)); | |
540 | ||
541 | /* We don't want to change from a meaningful | |
542 | base type to a null one, but if we know | |
543 | nothing, take what little we might now know. */ | |
544 | if (BTYPE (sym.n_type) != T_NULL | |
545 | || (*sym_hash)->type == T_NULL) | |
546 | (*sym_hash)->type = sym.n_type; | |
547 | } | |
548 | (*sym_hash)->auxbfd = abfd; | |
252b5132 RH |
549 | if (sym.n_numaux != 0) |
550 | { | |
551 | union internal_auxent *alloc; | |
552 | unsigned int i; | |
553 | bfd_byte *eaux; | |
554 | union internal_auxent *iaux; | |
555 | ||
556 | (*sym_hash)->numaux = sym.n_numaux; | |
557 | alloc = ((union internal_auxent *) | |
558 | bfd_hash_allocate (&info->hash->table, | |
559 | (sym.n_numaux | |
560 | * sizeof (*alloc)))); | |
561 | if (alloc == NULL) | |
562 | goto error_return; | |
563 | for (i = 0, eaux = esym + symesz, iaux = alloc; | |
564 | i < sym.n_numaux; | |
565 | i++, eaux += symesz, iaux++) | |
566 | bfd_coff_swap_aux_in (abfd, (PTR) eaux, sym.n_type, | |
567 | sym.n_sclass, i, sym.n_numaux, | |
568 | (PTR) iaux); | |
569 | (*sym_hash)->aux = alloc; | |
570 | } | |
571 | } | |
572 | } | |
5d54c628 ILT |
573 | |
574 | if (classification == COFF_SYMBOL_PE_SECTION | |
575 | && (*sym_hash)->numaux != 0) | |
576 | { | |
577 | /* Some PE sections (such as .bss) have a zero size in | |
578 | the section header, but a non-zero size in the AUX | |
579 | record. Correct that here. | |
580 | ||
581 | FIXME: This is not at all the right place to do this. | |
582 | For example, it won't help objdump. This needs to be | |
583 | done when we swap in the section header. */ | |
584 | ||
585 | BFD_ASSERT ((*sym_hash)->numaux == 1); | |
586 | if (section->_raw_size == 0) | |
587 | section->_raw_size = (*sym_hash)->aux[0].x_scn.x_scnlen; | |
588 | ||
589 | /* FIXME: We could test whether the section sizes | |
590 | matches the size in the aux entry, but apparently | |
591 | that sometimes fails unexpectedly. */ | |
592 | } | |
252b5132 RH |
593 | } |
594 | ||
595 | esym += (sym.n_numaux + 1) * symesz; | |
596 | sym_hash += sym.n_numaux + 1; | |
597 | } | |
598 | ||
599 | /* If this is a non-traditional, non-relocateable link, try to | |
600 | optimize the handling of any .stab/.stabstr sections. */ | |
601 | if (! info->relocateable | |
602 | && ! info->traditional_format | |
603 | && info->hash->creator->flavour == bfd_get_flavour (abfd) | |
604 | && (info->strip != strip_all && info->strip != strip_debugger)) | |
605 | { | |
606 | asection *stab, *stabstr; | |
607 | ||
608 | stab = bfd_get_section_by_name (abfd, ".stab"); | |
609 | if (stab != NULL) | |
610 | { | |
611 | stabstr = bfd_get_section_by_name (abfd, ".stabstr"); | |
612 | ||
613 | if (stabstr != NULL) | |
614 | { | |
615 | struct coff_link_hash_table *table; | |
616 | struct coff_section_tdata *secdata; | |
617 | ||
618 | secdata = coff_section_data (abfd, stab); | |
619 | if (secdata == NULL) | |
620 | { | |
621 | stab->used_by_bfd = | |
622 | (PTR) bfd_zalloc (abfd, | |
623 | sizeof (struct coff_section_tdata)); | |
624 | if (stab->used_by_bfd == NULL) | |
625 | goto error_return; | |
626 | secdata = coff_section_data (abfd, stab); | |
627 | } | |
628 | ||
629 | table = coff_hash_table (info); | |
630 | ||
631 | if (! _bfd_link_section_stabs (abfd, &table->stab_info, | |
632 | stab, stabstr, | |
633 | &secdata->stab_info)) | |
634 | goto error_return; | |
635 | } | |
636 | } | |
637 | } | |
638 | ||
639 | obj_coff_keep_syms (abfd) = keep_syms; | |
640 | ||
641 | return true; | |
642 | ||
643 | error_return: | |
644 | obj_coff_keep_syms (abfd) = keep_syms; | |
645 | return false; | |
646 | } | |
647 | \f | |
648 | /* Do the final link step. */ | |
649 | ||
650 | boolean | |
651 | _bfd_coff_final_link (abfd, info) | |
652 | bfd *abfd; | |
653 | struct bfd_link_info *info; | |
654 | { | |
655 | bfd_size_type symesz; | |
656 | struct coff_final_link_info finfo; | |
657 | boolean debug_merge_allocated; | |
658 | boolean long_section_names; | |
659 | asection *o; | |
660 | struct bfd_link_order *p; | |
661 | size_t max_sym_count; | |
662 | size_t max_lineno_count; | |
663 | size_t max_reloc_count; | |
664 | size_t max_output_reloc_count; | |
665 | size_t max_contents_size; | |
666 | file_ptr rel_filepos; | |
667 | unsigned int relsz; | |
668 | file_ptr line_filepos; | |
669 | unsigned int linesz; | |
670 | bfd *sub; | |
671 | bfd_byte *external_relocs = NULL; | |
672 | char strbuf[STRING_SIZE_SIZE]; | |
673 | ||
674 | symesz = bfd_coff_symesz (abfd); | |
675 | ||
676 | finfo.info = info; | |
677 | finfo.output_bfd = abfd; | |
678 | finfo.strtab = NULL; | |
679 | finfo.section_info = NULL; | |
680 | finfo.last_file_index = -1; | |
681 | finfo.last_bf_index = -1; | |
682 | finfo.internal_syms = NULL; | |
683 | finfo.sec_ptrs = NULL; | |
684 | finfo.sym_indices = NULL; | |
685 | finfo.outsyms = NULL; | |
686 | finfo.linenos = NULL; | |
687 | finfo.contents = NULL; | |
688 | finfo.external_relocs = NULL; | |
689 | finfo.internal_relocs = NULL; | |
690 | finfo.global_to_static = false; | |
691 | debug_merge_allocated = false; | |
692 | ||
693 | coff_data (abfd)->link_info = info; | |
694 | ||
695 | finfo.strtab = _bfd_stringtab_init (); | |
696 | if (finfo.strtab == NULL) | |
697 | goto error_return; | |
698 | ||
699 | if (! coff_debug_merge_hash_table_init (&finfo.debug_merge)) | |
700 | goto error_return; | |
701 | debug_merge_allocated = true; | |
702 | ||
703 | /* Compute the file positions for all the sections. */ | |
704 | if (! abfd->output_has_begun) | |
705 | { | |
706 | if (! bfd_coff_compute_section_file_positions (abfd)) | |
707 | goto error_return; | |
708 | } | |
709 | ||
710 | /* Count the line numbers and relocation entries required for the | |
711 | output file. Set the file positions for the relocs. */ | |
712 | rel_filepos = obj_relocbase (abfd); | |
713 | relsz = bfd_coff_relsz (abfd); | |
714 | max_contents_size = 0; | |
715 | max_lineno_count = 0; | |
716 | max_reloc_count = 0; | |
717 | ||
718 | long_section_names = false; | |
719 | for (o = abfd->sections; o != NULL; o = o->next) | |
720 | { | |
721 | o->reloc_count = 0; | |
722 | o->lineno_count = 0; | |
723 | for (p = o->link_order_head; p != NULL; p = p->next) | |
724 | { | |
725 | if (p->type == bfd_indirect_link_order) | |
726 | { | |
727 | asection *sec; | |
728 | ||
729 | sec = p->u.indirect.section; | |
730 | ||
731 | /* Mark all sections which are to be included in the | |
732 | link. This will normally be every section. We need | |
733 | to do this so that we can identify any sections which | |
734 | the linker has decided to not include. */ | |
735 | sec->linker_mark = true; | |
736 | ||
737 | if (info->strip == strip_none | |
738 | || info->strip == strip_some) | |
739 | o->lineno_count += sec->lineno_count; | |
740 | ||
741 | if (info->relocateable) | |
742 | o->reloc_count += sec->reloc_count; | |
743 | ||
744 | if (sec->_raw_size > max_contents_size) | |
745 | max_contents_size = sec->_raw_size; | |
746 | if (sec->lineno_count > max_lineno_count) | |
747 | max_lineno_count = sec->lineno_count; | |
748 | if (sec->reloc_count > max_reloc_count) | |
749 | max_reloc_count = sec->reloc_count; | |
750 | } | |
751 | else if (info->relocateable | |
752 | && (p->type == bfd_section_reloc_link_order | |
753 | || p->type == bfd_symbol_reloc_link_order)) | |
754 | ++o->reloc_count; | |
755 | } | |
756 | if (o->reloc_count == 0) | |
757 | o->rel_filepos = 0; | |
758 | else | |
759 | { | |
760 | o->flags |= SEC_RELOC; | |
761 | o->rel_filepos = rel_filepos; | |
762 | rel_filepos += o->reloc_count * relsz; | |
763 | } | |
764 | ||
765 | if (bfd_coff_long_section_names (abfd) | |
766 | && strlen (o->name) > SCNNMLEN) | |
767 | { | |
768 | /* This section has a long name which must go in the string | |
769 | table. This must correspond to the code in | |
770 | coff_write_object_contents which puts the string index | |
771 | into the s_name field of the section header. That is why | |
772 | we pass hash as false. */ | |
773 | if (_bfd_stringtab_add (finfo.strtab, o->name, false, false) | |
774 | == (bfd_size_type) -1) | |
775 | goto error_return; | |
776 | long_section_names = true; | |
777 | } | |
778 | } | |
779 | ||
780 | /* If doing a relocateable link, allocate space for the pointers we | |
781 | need to keep. */ | |
782 | if (info->relocateable) | |
783 | { | |
784 | unsigned int i; | |
785 | ||
786 | /* We use section_count + 1, rather than section_count, because | |
787 | the target_index fields are 1 based. */ | |
788 | finfo.section_info = | |
789 | ((struct coff_link_section_info *) | |
790 | bfd_malloc ((abfd->section_count + 1) | |
791 | * sizeof (struct coff_link_section_info))); | |
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); | |
832 | finfo.section_info[o->target_index].relocs = | |
833 | ((struct internal_reloc *) | |
834 | bfd_malloc (o->reloc_count * sizeof (struct internal_reloc))); | |
835 | finfo.section_info[o->target_index].rel_hashes = | |
836 | ((struct coff_link_hash_entry **) | |
837 | bfd_malloc (o->reloc_count | |
838 | * sizeof (struct coff_link_hash_entry *))); | |
839 | if (finfo.section_info[o->target_index].relocs == NULL | |
840 | || finfo.section_info[o->target_index].rel_hashes == NULL) | |
841 | goto error_return; | |
842 | ||
843 | if (o->reloc_count > max_output_reloc_count) | |
844 | max_output_reloc_count = o->reloc_count; | |
845 | } | |
846 | ||
847 | /* Reset the reloc and lineno counts, so that we can use them to | |
848 | count the number of entries we have output so far. */ | |
849 | o->reloc_count = 0; | |
850 | o->lineno_count = 0; | |
851 | } | |
852 | ||
853 | obj_sym_filepos (abfd) = line_filepos; | |
854 | ||
855 | /* Figure out the largest number of symbols in an input BFD. Take | |
856 | the opportunity to clear the output_has_begun fields of all the | |
857 | input BFD's. */ | |
858 | max_sym_count = 0; | |
859 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
860 | { | |
861 | size_t sz; | |
862 | ||
863 | sub->output_has_begun = false; | |
864 | sz = obj_raw_syment_count (sub); | |
865 | if (sz > max_sym_count) | |
866 | max_sym_count = sz; | |
867 | } | |
868 | ||
869 | /* Allocate some buffers used while linking. */ | |
870 | finfo.internal_syms = ((struct internal_syment *) | |
871 | bfd_malloc (max_sym_count | |
872 | * sizeof (struct internal_syment))); | |
873 | finfo.sec_ptrs = (asection **) bfd_malloc (max_sym_count | |
874 | * sizeof (asection *)); | |
875 | finfo.sym_indices = (long *) bfd_malloc (max_sym_count * sizeof (long)); | |
876 | finfo.outsyms = ((bfd_byte *) | |
877 | bfd_malloc ((size_t) ((max_sym_count + 1) * symesz))); | |
878 | finfo.linenos = (bfd_byte *) bfd_malloc (max_lineno_count | |
879 | * bfd_coff_linesz (abfd)); | |
880 | finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size); | |
881 | finfo.external_relocs = (bfd_byte *) bfd_malloc (max_reloc_count * relsz); | |
882 | if (! info->relocateable) | |
883 | finfo.internal_relocs = ((struct internal_reloc *) | |
884 | bfd_malloc (max_reloc_count | |
885 | * sizeof (struct internal_reloc))); | |
886 | if ((finfo.internal_syms == NULL && max_sym_count > 0) | |
887 | || (finfo.sec_ptrs == NULL && max_sym_count > 0) | |
888 | || (finfo.sym_indices == NULL && max_sym_count > 0) | |
889 | || finfo.outsyms == NULL | |
890 | || (finfo.linenos == NULL && max_lineno_count > 0) | |
891 | || (finfo.contents == NULL && max_contents_size > 0) | |
892 | || (finfo.external_relocs == NULL && max_reloc_count > 0) | |
893 | || (! info->relocateable | |
894 | && finfo.internal_relocs == NULL | |
895 | && max_reloc_count > 0)) | |
896 | goto error_return; | |
897 | ||
898 | /* We now know the position of everything in the file, except that | |
899 | we don't know the size of the symbol table and therefore we don't | |
900 | know where the string table starts. We just build the string | |
901 | table in memory as we go along. We process all the relocations | |
902 | for a single input file at once. */ | |
903 | obj_raw_syment_count (abfd) = 0; | |
904 | ||
905 | if (coff_backend_info (abfd)->_bfd_coff_start_final_link) | |
906 | { | |
907 | if (! bfd_coff_start_final_link (abfd, info)) | |
908 | goto error_return; | |
909 | } | |
910 | ||
911 | for (o = abfd->sections; o != NULL; o = o->next) | |
912 | { | |
913 | for (p = o->link_order_head; p != NULL; p = p->next) | |
914 | { | |
915 | if (p->type == bfd_indirect_link_order | |
9bd09e22 | 916 | && bfd_family_coff (p->u.indirect.section->owner)) |
252b5132 RH |
917 | { |
918 | sub = p->u.indirect.section->owner; | |
919 | if (! bfd_coff_link_output_has_begun (sub, & finfo)) | |
920 | { | |
921 | if (! _bfd_coff_link_input_bfd (&finfo, sub)) | |
922 | goto error_return; | |
923 | sub->output_has_begun = true; | |
924 | } | |
925 | } | |
926 | else if (p->type == bfd_section_reloc_link_order | |
927 | || p->type == bfd_symbol_reloc_link_order) | |
928 | { | |
929 | if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p)) | |
930 | goto error_return; | |
931 | } | |
932 | else | |
933 | { | |
934 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
935 | goto error_return; | |
936 | } | |
937 | } | |
938 | } | |
939 | ||
940 | if (! bfd_coff_final_link_postscript (abfd, & finfo)) | |
941 | goto error_return; | |
244148ad | 942 | |
252b5132 RH |
943 | /* Free up the buffers used by _bfd_coff_link_input_bfd. */ |
944 | ||
945 | coff_debug_merge_hash_table_free (&finfo.debug_merge); | |
946 | debug_merge_allocated = false; | |
947 | ||
948 | if (finfo.internal_syms != NULL) | |
949 | { | |
950 | free (finfo.internal_syms); | |
951 | finfo.internal_syms = NULL; | |
952 | } | |
953 | if (finfo.sec_ptrs != NULL) | |
954 | { | |
955 | free (finfo.sec_ptrs); | |
956 | finfo.sec_ptrs = NULL; | |
957 | } | |
958 | if (finfo.sym_indices != NULL) | |
959 | { | |
960 | free (finfo.sym_indices); | |
961 | finfo.sym_indices = NULL; | |
962 | } | |
963 | if (finfo.linenos != NULL) | |
964 | { | |
965 | free (finfo.linenos); | |
966 | finfo.linenos = NULL; | |
967 | } | |
968 | if (finfo.contents != NULL) | |
969 | { | |
970 | free (finfo.contents); | |
971 | finfo.contents = NULL; | |
972 | } | |
973 | if (finfo.external_relocs != NULL) | |
974 | { | |
975 | free (finfo.external_relocs); | |
976 | finfo.external_relocs = NULL; | |
977 | } | |
978 | if (finfo.internal_relocs != NULL) | |
979 | { | |
980 | free (finfo.internal_relocs); | |
981 | finfo.internal_relocs = NULL; | |
982 | } | |
983 | ||
984 | /* The value of the last C_FILE symbol is supposed to be the symbol | |
985 | index of the first external symbol. Write it out again if | |
986 | necessary. */ | |
987 | if (finfo.last_file_index != -1 | |
988 | && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd)) | |
989 | { | |
990 | finfo.last_file.n_value = obj_raw_syment_count (abfd); | |
991 | bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file, | |
992 | (PTR) finfo.outsyms); | |
993 | if (bfd_seek (abfd, | |
994 | (obj_sym_filepos (abfd) | |
995 | + finfo.last_file_index * symesz), | |
996 | SEEK_SET) != 0 | |
997 | || bfd_write (finfo.outsyms, symesz, 1, abfd) != symesz) | |
998 | return false; | |
999 | } | |
1000 | ||
1001 | /* If doing task linking (ld --task-link) then make a pass through the | |
1002 | global symbols, writing out any that are defined, and making them | |
244148ad | 1003 | static. */ |
252b5132 RH |
1004 | if (info->task_link) |
1005 | { | |
1006 | finfo.failed = false; | |
1007 | coff_link_hash_traverse (coff_hash_table (info), _bfd_coff_write_task_globals, | |
1008 | (PTR) &finfo); | |
1009 | if (finfo.failed) | |
1010 | goto error_return; | |
1011 | } | |
1012 | ||
1013 | /* Write out the global symbols. */ | |
1014 | finfo.failed = false; | |
1015 | coff_link_hash_traverse (coff_hash_table (info), _bfd_coff_write_global_sym, | |
1016 | (PTR) &finfo); | |
1017 | if (finfo.failed) | |
1018 | goto error_return; | |
1019 | ||
1020 | /* The outsyms buffer is used by _bfd_coff_write_global_sym. */ | |
1021 | if (finfo.outsyms != NULL) | |
1022 | { | |
1023 | free (finfo.outsyms); | |
1024 | finfo.outsyms = NULL; | |
1025 | } | |
1026 | ||
1027 | if (info->relocateable && max_output_reloc_count > 0) | |
1028 | { | |
1029 | /* Now that we have written out all the global symbols, we know | |
1030 | the symbol indices to use for relocs against them, and we can | |
1031 | finally write out the relocs. */ | |
1032 | external_relocs = ((bfd_byte *) | |
1033 | bfd_malloc (max_output_reloc_count * relsz)); | |
1034 | if (external_relocs == NULL) | |
1035 | goto error_return; | |
1036 | ||
1037 | for (o = abfd->sections; o != NULL; o = o->next) | |
1038 | { | |
1039 | struct internal_reloc *irel; | |
1040 | struct internal_reloc *irelend; | |
1041 | struct coff_link_hash_entry **rel_hash; | |
1042 | bfd_byte *erel; | |
1043 | ||
1044 | if (o->reloc_count == 0) | |
1045 | continue; | |
1046 | ||
1047 | irel = finfo.section_info[o->target_index].relocs; | |
1048 | irelend = irel + o->reloc_count; | |
1049 | rel_hash = finfo.section_info[o->target_index].rel_hashes; | |
1050 | erel = external_relocs; | |
1051 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) | |
1052 | { | |
1053 | if (*rel_hash != NULL) | |
1054 | { | |
1055 | BFD_ASSERT ((*rel_hash)->indx >= 0); | |
1056 | irel->r_symndx = (*rel_hash)->indx; | |
1057 | } | |
1058 | bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel); | |
1059 | } | |
1060 | ||
1061 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 | |
1062 | || bfd_write ((PTR) external_relocs, relsz, o->reloc_count, | |
1063 | abfd) != relsz * o->reloc_count) | |
1064 | goto error_return; | |
1065 | } | |
1066 | ||
1067 | free (external_relocs); | |
1068 | external_relocs = NULL; | |
1069 | } | |
1070 | ||
1071 | /* Free up the section information. */ | |
1072 | if (finfo.section_info != NULL) | |
1073 | { | |
1074 | unsigned int i; | |
1075 | ||
1076 | for (i = 0; i < abfd->section_count; i++) | |
1077 | { | |
1078 | if (finfo.section_info[i].relocs != NULL) | |
1079 | free (finfo.section_info[i].relocs); | |
1080 | if (finfo.section_info[i].rel_hashes != NULL) | |
1081 | free (finfo.section_info[i].rel_hashes); | |
1082 | } | |
1083 | free (finfo.section_info); | |
1084 | finfo.section_info = NULL; | |
1085 | } | |
1086 | ||
1087 | /* If we have optimized stabs strings, output them. */ | |
1088 | if (coff_hash_table (info)->stab_info != NULL) | |
1089 | { | |
1090 | if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info)) | |
1091 | return false; | |
1092 | } | |
1093 | ||
1094 | /* Write out the string table. */ | |
1095 | if (obj_raw_syment_count (abfd) != 0 || long_section_names) | |
1096 | { | |
1097 | if (bfd_seek (abfd, | |
1098 | (obj_sym_filepos (abfd) | |
1099 | + obj_raw_syment_count (abfd) * symesz), | |
1100 | SEEK_SET) != 0) | |
1101 | return false; | |
1102 | ||
1103 | #if STRING_SIZE_SIZE == 4 | |
1104 | bfd_h_put_32 (abfd, | |
1105 | _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE, | |
1106 | (bfd_byte *) strbuf); | |
1107 | #else | |
1108 | #error Change bfd_h_put_32 | |
1109 | #endif | |
1110 | ||
1111 | if (bfd_write (strbuf, 1, STRING_SIZE_SIZE, abfd) != STRING_SIZE_SIZE) | |
1112 | return false; | |
1113 | ||
1114 | if (! _bfd_stringtab_emit (abfd, finfo.strtab)) | |
1115 | return false; | |
d71f672e PB |
1116 | |
1117 | obj_coff_strings_written (abfd) = true; | |
252b5132 RH |
1118 | } |
1119 | ||
1120 | _bfd_stringtab_free (finfo.strtab); | |
1121 | ||
1122 | /* Setting bfd_get_symcount to 0 will cause write_object_contents to | |
1123 | not try to write out the symbols. */ | |
1124 | bfd_get_symcount (abfd) = 0; | |
1125 | ||
1126 | return true; | |
1127 | ||
1128 | error_return: | |
1129 | if (debug_merge_allocated) | |
1130 | coff_debug_merge_hash_table_free (&finfo.debug_merge); | |
1131 | if (finfo.strtab != NULL) | |
1132 | _bfd_stringtab_free (finfo.strtab); | |
1133 | if (finfo.section_info != NULL) | |
1134 | { | |
1135 | unsigned int i; | |
1136 | ||
1137 | for (i = 0; i < abfd->section_count; i++) | |
1138 | { | |
1139 | if (finfo.section_info[i].relocs != NULL) | |
1140 | free (finfo.section_info[i].relocs); | |
1141 | if (finfo.section_info[i].rel_hashes != NULL) | |
1142 | free (finfo.section_info[i].rel_hashes); | |
1143 | } | |
1144 | free (finfo.section_info); | |
1145 | } | |
1146 | if (finfo.internal_syms != NULL) | |
1147 | free (finfo.internal_syms); | |
1148 | if (finfo.sec_ptrs != NULL) | |
1149 | free (finfo.sec_ptrs); | |
1150 | if (finfo.sym_indices != NULL) | |
1151 | free (finfo.sym_indices); | |
1152 | if (finfo.outsyms != NULL) | |
1153 | free (finfo.outsyms); | |
1154 | if (finfo.linenos != NULL) | |
1155 | free (finfo.linenos); | |
1156 | if (finfo.contents != NULL) | |
1157 | free (finfo.contents); | |
1158 | if (finfo.external_relocs != NULL) | |
1159 | free (finfo.external_relocs); | |
1160 | if (finfo.internal_relocs != NULL) | |
1161 | free (finfo.internal_relocs); | |
1162 | if (external_relocs != NULL) | |
1163 | free (external_relocs); | |
1164 | return false; | |
1165 | } | |
1166 | ||
1167 | /* parse out a -heap <reserved>,<commit> line */ | |
1168 | ||
1169 | static char * | |
1170 | dores_com (ptr, output_bfd, heap) | |
1171 | char *ptr; | |
1172 | bfd *output_bfd; | |
1173 | int heap; | |
1174 | { | |
244148ad | 1175 | if (coff_data(output_bfd)->pe) |
252b5132 RH |
1176 | { |
1177 | int val = strtoul (ptr, &ptr, 0); | |
1178 | if (heap) | |
1179 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve =val; | |
1180 | else | |
1181 | pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve =val; | |
1182 | ||
244148ad | 1183 | if (ptr[0] == ',') |
252b5132 RH |
1184 | { |
1185 | int val = strtoul (ptr+1, &ptr, 0); | |
1186 | if (heap) | |
1187 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit =val; | |
1188 | else | |
1189 | pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit =val; | |
1190 | } | |
1191 | } | |
1192 | return ptr; | |
1193 | } | |
1194 | ||
1195 | static char *get_name(ptr, dst) | |
1196 | char *ptr; | |
1197 | char **dst; | |
1198 | { | |
1199 | while (*ptr == ' ') | |
1200 | ptr++; | |
1201 | *dst = ptr; | |
1202 | while (*ptr && *ptr != ' ') | |
1203 | ptr++; | |
1204 | *ptr = 0; | |
1205 | return ptr+1; | |
1206 | } | |
1207 | ||
1208 | /* Process any magic embedded commands in a section called .drectve */ | |
244148ad | 1209 | |
252b5132 RH |
1210 | static int |
1211 | process_embedded_commands (output_bfd, info, abfd) | |
1212 | bfd *output_bfd; | |
5f771d47 | 1213 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1214 | bfd *abfd; |
1215 | { | |
1216 | asection *sec = bfd_get_section_by_name (abfd, ".drectve"); | |
1217 | char *s; | |
1218 | char *e; | |
1219 | char *copy; | |
244148ad | 1220 | if (!sec) |
252b5132 | 1221 | return 1; |
244148ad | 1222 | |
252b5132 | 1223 | copy = bfd_malloc ((size_t) sec->_raw_size); |
244148ad | 1224 | if (!copy) |
252b5132 | 1225 | return 0; |
244148ad | 1226 | if (! bfd_get_section_contents(abfd, sec, copy, 0, sec->_raw_size)) |
252b5132 RH |
1227 | { |
1228 | free (copy); | |
1229 | return 0; | |
1230 | } | |
1231 | e = copy + sec->_raw_size; | |
244148ad | 1232 | for (s = copy; s < e ; ) |
252b5132 RH |
1233 | { |
1234 | if (s[0]!= '-') { | |
1235 | s++; | |
1236 | continue; | |
1237 | } | |
1238 | if (strncmp (s,"-attr", 5) == 0) | |
1239 | { | |
1240 | char *name; | |
1241 | char *attribs; | |
1242 | asection *asec; | |
1243 | ||
1244 | int loop = 1; | |
1245 | int had_write = 0; | |
1246 | int had_read = 0; | |
1247 | int had_exec= 0; | |
1248 | int had_shared= 0; | |
1249 | s += 5; | |
1250 | s = get_name(s, &name); | |
1251 | s = get_name(s, &attribs); | |
1252 | while (loop) { | |
244148ad | 1253 | switch (*attribs++) |
252b5132 RH |
1254 | { |
1255 | case 'W': | |
1256 | had_write = 1; | |
1257 | break; | |
1258 | case 'R': | |
1259 | had_read = 1; | |
1260 | break; | |
1261 | case 'S': | |
1262 | had_shared = 1; | |
1263 | break; | |
1264 | case 'X': | |
1265 | had_exec = 1; | |
1266 | break; | |
1267 | default: | |
1268 | loop = 0; | |
1269 | } | |
1270 | } | |
1271 | asec = bfd_get_section_by_name (abfd, name); | |
1272 | if (asec) { | |
1273 | if (had_exec) | |
1274 | asec->flags |= SEC_CODE; | |
1275 | if (!had_write) | |
1276 | asec->flags |= SEC_READONLY; | |
1277 | } | |
1278 | } | |
1279 | else if (strncmp (s,"-heap", 5) == 0) | |
1280 | { | |
1281 | s = dores_com (s+5, output_bfd, 1); | |
1282 | } | |
1283 | else if (strncmp (s,"-stack", 6) == 0) | |
1284 | { | |
1285 | s = dores_com (s+6, output_bfd, 0); | |
1286 | } | |
244148ad | 1287 | else |
252b5132 RH |
1288 | s++; |
1289 | } | |
1290 | free (copy); | |
1291 | return 1; | |
1292 | } | |
1293 | ||
1294 | /* Place a marker against all symbols which are used by relocations. | |
1295 | This marker can be picked up by the 'do we skip this symbol ?' | |
1296 | loop in _bfd_coff_link_input_bfd() and used to prevent skipping | |
244148ad | 1297 | that symbol. |
252b5132 RH |
1298 | */ |
1299 | ||
1300 | static void | |
1301 | mark_relocs (finfo, input_bfd) | |
1302 | struct coff_final_link_info * finfo; | |
1303 | bfd * input_bfd; | |
1304 | { | |
1305 | asection * a; | |
1306 | ||
1307 | if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0) | |
1308 | return; | |
244148ad | 1309 | |
252b5132 RH |
1310 | for (a = input_bfd->sections; a != (asection *) NULL; a = a->next) |
1311 | { | |
1312 | struct internal_reloc * internal_relocs; | |
1313 | struct internal_reloc * irel; | |
1314 | struct internal_reloc * irelend; | |
1315 | ||
252b5132 RH |
1316 | if ((a->flags & SEC_RELOC) == 0 || a->reloc_count < 1) |
1317 | continue; | |
1318 | ||
1319 | /* Read in the relocs. */ | |
1320 | internal_relocs = _bfd_coff_read_internal_relocs | |
1321 | (input_bfd, a, false, | |
1322 | finfo->external_relocs, | |
1323 | finfo->info->relocateable, | |
1324 | (finfo->info->relocateable | |
1325 | ? (finfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count) | |
1326 | : finfo->internal_relocs) | |
1327 | ); | |
244148ad | 1328 | |
252b5132 RH |
1329 | if (internal_relocs == NULL) |
1330 | continue; | |
1331 | ||
1332 | irel = internal_relocs; | |
1333 | irelend = irel + a->reloc_count; | |
1334 | ||
1335 | /* Place a mark in the sym_indices array (whose entries have | |
1336 | been initialised to 0) for all of the symbols that are used | |
1337 | in the relocation table. This will then be picked up in the | |
1338 | skip/don't pass */ | |
244148ad | 1339 | |
252b5132 RH |
1340 | for (; irel < irelend; irel++) |
1341 | { | |
1342 | finfo->sym_indices[ irel->r_symndx ] = -1; | |
1343 | } | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | /* Link an input file into the linker output file. This function | |
1348 | handles all the sections and relocations of the input file at once. */ | |
1349 | ||
1350 | boolean | |
1351 | _bfd_coff_link_input_bfd (finfo, input_bfd) | |
1352 | struct coff_final_link_info *finfo; | |
1353 | bfd *input_bfd; | |
1354 | { | |
b2d638c7 ILT |
1355 | unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask; |
1356 | unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft; | |
1357 | #if 0 | |
1358 | unsigned int n_btmask = coff_data (input_bfd)->local_n_btmask; | |
1359 | #endif | |
252b5132 RH |
1360 | boolean (*adjust_symndx) PARAMS ((bfd *, struct bfd_link_info *, bfd *, |
1361 | asection *, struct internal_reloc *, | |
1362 | boolean *)); | |
1363 | bfd *output_bfd; | |
1364 | const char *strings; | |
1365 | bfd_size_type syment_base; | |
252b5132 RH |
1366 | boolean copy, hash; |
1367 | bfd_size_type isymesz; | |
1368 | bfd_size_type osymesz; | |
1369 | bfd_size_type linesz; | |
1370 | bfd_byte *esym; | |
1371 | bfd_byte *esym_end; | |
1372 | struct internal_syment *isymp; | |
1373 | asection **secpp; | |
1374 | long *indexp; | |
1375 | unsigned long output_index; | |
1376 | bfd_byte *outsym; | |
1377 | struct coff_link_hash_entry **sym_hash; | |
1378 | asection *o; | |
1379 | ||
1380 | /* Move all the symbols to the output file. */ | |
1381 | ||
1382 | output_bfd = finfo->output_bfd; | |
252b5132 RH |
1383 | strings = NULL; |
1384 | syment_base = obj_raw_syment_count (output_bfd); | |
1385 | isymesz = bfd_coff_symesz (input_bfd); | |
1386 | osymesz = bfd_coff_symesz (output_bfd); | |
1387 | linesz = bfd_coff_linesz (input_bfd); | |
1388 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
1389 | ||
252b5132 RH |
1390 | copy = false; |
1391 | if (! finfo->info->keep_memory) | |
1392 | copy = true; | |
1393 | hash = true; | |
1394 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
1395 | hash = false; | |
1396 | ||
1397 | if (! _bfd_coff_get_external_symbols (input_bfd)) | |
1398 | return false; | |
1399 | ||
1400 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1401 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1402 | isymp = finfo->internal_syms; | |
1403 | secpp = finfo->sec_ptrs; | |
1404 | indexp = finfo->sym_indices; | |
1405 | output_index = syment_base; | |
1406 | outsym = finfo->outsyms; | |
1407 | ||
1408 | if (coff_data (output_bfd)->pe) | |
1409 | { | |
1410 | if (! process_embedded_commands (output_bfd, finfo->info, input_bfd)) | |
1411 | return false; | |
1412 | } | |
1413 | ||
1414 | /* If we are going to perform relocations and also strip/discard some symbols | |
1415 | then we must make sure that we do not strip/discard those symbols that are | |
1416 | going to be involved in the relocations */ | |
1417 | if (( finfo->info->strip != strip_none | |
1418 | || finfo->info->discard != discard_none) | |
1419 | && finfo->info->relocateable) | |
1420 | { | |
1421 | /* mark the symbol array as 'not-used' */ | |
244148ad KH |
1422 | memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp); |
1423 | ||
252b5132 RH |
1424 | mark_relocs (finfo, input_bfd); |
1425 | } | |
1426 | ||
1427 | while (esym < esym_end) | |
1428 | { | |
1429 | struct internal_syment isym; | |
5d54c628 | 1430 | enum coff_symbol_classification classification; |
252b5132 RH |
1431 | boolean skip; |
1432 | boolean global; | |
1433 | boolean dont_skip_symbol; | |
1434 | int add; | |
1435 | ||
1436 | bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp); | |
1437 | ||
1438 | /* Make a copy of *isymp so that the relocate_section function | |
1439 | always sees the original values. This is more reliable than | |
1440 | always recomputing the symbol value even if we are stripping | |
1441 | the symbol. */ | |
1442 | isym = *isymp; | |
1443 | ||
5d54c628 ILT |
1444 | classification = bfd_coff_classify_symbol (input_bfd, &isym); |
1445 | switch (classification) | |
252b5132 | 1446 | { |
5d54c628 ILT |
1447 | default: |
1448 | abort (); | |
1449 | case COFF_SYMBOL_GLOBAL: | |
1450 | case COFF_SYMBOL_PE_SECTION: | |
1451 | case COFF_SYMBOL_LOCAL: | |
1452 | *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum); | |
1453 | break; | |
1454 | case COFF_SYMBOL_COMMON: | |
1455 | *secpp = bfd_com_section_ptr; | |
1456 | break; | |
1457 | case COFF_SYMBOL_UNDEFINED: | |
1458 | *secpp = bfd_und_section_ptr; | |
1459 | break; | |
252b5132 RH |
1460 | } |
1461 | ||
1462 | /* Extract the flag indicating if this symbol is used by a | |
1463 | relocation. */ | |
1464 | if ((finfo->info->strip != strip_none | |
1465 | || finfo->info->discard != discard_none) | |
1466 | && finfo->info->relocateable) | |
1467 | dont_skip_symbol = *indexp; | |
1468 | else | |
1469 | dont_skip_symbol = false; | |
244148ad | 1470 | |
252b5132 RH |
1471 | *indexp = -1; |
1472 | ||
1473 | skip = false; | |
1474 | global = false; | |
1475 | add = 1 + isym.n_numaux; | |
1476 | ||
1477 | /* If we are stripping all symbols, we want to skip this one. */ | |
1478 | if (finfo->info->strip == strip_all && ! dont_skip_symbol) | |
1479 | skip = true; | |
1480 | ||
1481 | if (! skip) | |
1482 | { | |
5d54c628 | 1483 | switch (classification) |
252b5132 | 1484 | { |
5d54c628 ILT |
1485 | default: |
1486 | abort (); | |
1487 | case COFF_SYMBOL_GLOBAL: | |
1488 | case COFF_SYMBOL_COMMON: | |
1489 | case COFF_SYMBOL_PE_SECTION: | |
252b5132 RH |
1490 | /* This is a global symbol. Global symbols come at the |
1491 | end of the symbol table, so skip them for now. | |
1492 | Locally defined function symbols, however, are an | |
1493 | exception, and are not moved to the end. */ | |
1494 | global = true; | |
5d54c628 | 1495 | if (! ISFCN (isym.n_type)) |
252b5132 | 1496 | skip = true; |
5d54c628 ILT |
1497 | break; |
1498 | ||
1499 | case COFF_SYMBOL_UNDEFINED: | |
1500 | /* Undefined symbols are left for the end. */ | |
1501 | global = true; | |
1502 | skip = true; | |
1503 | break; | |
1504 | ||
1505 | case COFF_SYMBOL_LOCAL: | |
252b5132 RH |
1506 | /* This is a local symbol. Skip it if we are discarding |
1507 | local symbols. */ | |
1508 | if (finfo->info->discard == discard_all && ! dont_skip_symbol) | |
1509 | skip = true; | |
5d54c628 | 1510 | break; |
252b5132 RH |
1511 | } |
1512 | } | |
1513 | ||
440c4607 NC |
1514 | #ifndef COFF_WITH_PE |
1515 | /* Skip section symbols for sections which are not going to be | |
1516 | emitted, or which belong to linkonce sections that are going | |
1517 | to be discarded. */ | |
1518 | if (!skip | |
1519 | && isym.n_sclass == C_STAT | |
1520 | && isym.n_type == T_NULL | |
1521 | && isym.n_numaux > 0) | |
1522 | { | |
1523 | if ((*secpp)->output_section == bfd_abs_section_ptr | |
1524 | || (*secpp)->kept_section) | |
1525 | skip = true; | |
1526 | } | |
1527 | #endif | |
1528 | ||
252b5132 RH |
1529 | /* If we stripping debugging symbols, and this is a debugging |
1530 | symbol, then skip it. FIXME: gas sets the section to N_ABS | |
1531 | for some types of debugging symbols; I don't know if this is | |
1532 | a bug or not. In any case, we handle it here. */ | |
1533 | if (! skip | |
1534 | && finfo->info->strip == strip_debugger | |
1535 | && ! dont_skip_symbol | |
1536 | && (isym.n_scnum == N_DEBUG | |
1537 | || (isym.n_scnum == N_ABS | |
1538 | && (isym.n_sclass == C_AUTO | |
1539 | || isym.n_sclass == C_REG | |
1540 | || isym.n_sclass == C_MOS | |
1541 | || isym.n_sclass == C_MOE | |
1542 | || isym.n_sclass == C_MOU | |
1543 | || isym.n_sclass == C_ARG | |
1544 | || isym.n_sclass == C_REGPARM | |
1545 | || isym.n_sclass == C_FIELD | |
1546 | || isym.n_sclass == C_EOS)))) | |
1547 | skip = true; | |
1548 | ||
1549 | /* If some symbols are stripped based on the name, work out the | |
1550 | name and decide whether to skip this symbol. */ | |
1551 | if (! skip | |
1552 | && (finfo->info->strip == strip_some | |
1553 | || finfo->info->discard == discard_l)) | |
1554 | { | |
1555 | const char *name; | |
1556 | char buf[SYMNMLEN + 1]; | |
1557 | ||
1558 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1559 | if (name == NULL) | |
1560 | return false; | |
1561 | ||
1562 | if (! dont_skip_symbol | |
1563 | && ((finfo->info->strip == strip_some | |
1564 | && (bfd_hash_lookup (finfo->info->keep_hash, name, false, | |
1565 | false) == NULL)) | |
1566 | || (! global | |
1567 | && finfo->info->discard == discard_l | |
1568 | && bfd_is_local_label_name (input_bfd, name)))) | |
1569 | skip = true; | |
1570 | } | |
1571 | ||
1572 | /* If this is an enum, struct, or union tag, see if we have | |
1573 | already output an identical type. */ | |
1574 | if (! skip | |
1575 | && (finfo->output_bfd->flags & BFD_TRADITIONAL_FORMAT) == 0 | |
1576 | && (isym.n_sclass == C_ENTAG | |
1577 | || isym.n_sclass == C_STRTAG | |
1578 | || isym.n_sclass == C_UNTAG) | |
1579 | && isym.n_numaux == 1) | |
1580 | { | |
1581 | const char *name; | |
1582 | char buf[SYMNMLEN + 1]; | |
1583 | struct coff_debug_merge_hash_entry *mh; | |
1584 | struct coff_debug_merge_type *mt; | |
1585 | union internal_auxent aux; | |
1586 | struct coff_debug_merge_element **epp; | |
1587 | bfd_byte *esl, *eslend; | |
1588 | struct internal_syment *islp; | |
1589 | ||
1590 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1591 | if (name == NULL) | |
1592 | return false; | |
1593 | ||
1594 | /* Ignore fake names invented by compiler; treat them all as | |
1595 | the same name. */ | |
1596 | if (*name == '~' || *name == '.' || *name == '$' | |
1597 | || (*name == bfd_get_symbol_leading_char (input_bfd) | |
1598 | && (name[1] == '~' || name[1] == '.' || name[1] == '$'))) | |
1599 | name = ""; | |
1600 | ||
1601 | mh = coff_debug_merge_hash_lookup (&finfo->debug_merge, name, | |
1602 | true, true); | |
1603 | if (mh == NULL) | |
1604 | return false; | |
1605 | ||
1606 | /* Allocate memory to hold type information. If this turns | |
1607 | out to be a duplicate, we pass this address to | |
1608 | bfd_release. */ | |
1609 | mt = ((struct coff_debug_merge_type *) | |
1610 | bfd_alloc (input_bfd, | |
1611 | sizeof (struct coff_debug_merge_type))); | |
1612 | if (mt == NULL) | |
1613 | return false; | |
1614 | mt->class = isym.n_sclass; | |
1615 | ||
1616 | /* Pick up the aux entry, which points to the end of the tag | |
1617 | entries. */ | |
1618 | bfd_coff_swap_aux_in (input_bfd, (PTR) (esym + isymesz), | |
1619 | isym.n_type, isym.n_sclass, 0, isym.n_numaux, | |
1620 | (PTR) &aux); | |
1621 | ||
1622 | /* Gather the elements. */ | |
1623 | epp = &mt->elements; | |
1624 | mt->elements = NULL; | |
1625 | islp = isymp + 2; | |
1626 | esl = esym + 2 * isymesz; | |
1627 | eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd) | |
1628 | + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz); | |
1629 | while (esl < eslend) | |
1630 | { | |
1631 | const char *elename; | |
1632 | char elebuf[SYMNMLEN + 1]; | |
00692651 | 1633 | char *name_copy; |
252b5132 RH |
1634 | |
1635 | bfd_coff_swap_sym_in (input_bfd, (PTR) esl, (PTR) islp); | |
1636 | ||
1637 | *epp = ((struct coff_debug_merge_element *) | |
1638 | bfd_alloc (input_bfd, | |
1639 | sizeof (struct coff_debug_merge_element))); | |
1640 | if (*epp == NULL) | |
1641 | return false; | |
1642 | ||
1643 | elename = _bfd_coff_internal_syment_name (input_bfd, islp, | |
1644 | elebuf); | |
1645 | if (elename == NULL) | |
1646 | return false; | |
1647 | ||
00692651 ILT |
1648 | name_copy = (char *) bfd_alloc (input_bfd, |
1649 | strlen (elename) + 1); | |
1650 | if (name_copy == NULL) | |
252b5132 | 1651 | return false; |
00692651 | 1652 | strcpy (name_copy, elename); |
252b5132 | 1653 | |
00692651 | 1654 | (*epp)->name = name_copy; |
252b5132 RH |
1655 | (*epp)->type = islp->n_type; |
1656 | (*epp)->tagndx = 0; | |
1657 | if (islp->n_numaux >= 1 | |
1658 | && islp->n_type != T_NULL | |
1659 | && islp->n_sclass != C_EOS) | |
1660 | { | |
1661 | union internal_auxent eleaux; | |
1662 | long indx; | |
1663 | ||
1664 | bfd_coff_swap_aux_in (input_bfd, (PTR) (esl + isymesz), | |
1665 | islp->n_type, islp->n_sclass, 0, | |
1666 | islp->n_numaux, (PTR) &eleaux); | |
1667 | indx = eleaux.x_sym.x_tagndx.l; | |
1668 | ||
1669 | /* FIXME: If this tagndx entry refers to a symbol | |
1670 | defined later in this file, we just ignore it. | |
1671 | Handling this correctly would be tedious, and may | |
1672 | not be required. */ | |
1673 | ||
1674 | if (indx > 0 | |
1675 | && (indx | |
1676 | < ((esym - | |
1677 | (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1678 | / (long) isymesz))) | |
1679 | { | |
1680 | (*epp)->tagndx = finfo->sym_indices[indx]; | |
1681 | if ((*epp)->tagndx < 0) | |
1682 | (*epp)->tagndx = 0; | |
1683 | } | |
1684 | } | |
1685 | epp = &(*epp)->next; | |
1686 | *epp = NULL; | |
1687 | ||
1688 | esl += (islp->n_numaux + 1) * isymesz; | |
1689 | islp += islp->n_numaux + 1; | |
1690 | } | |
1691 | ||
1692 | /* See if we already have a definition which matches this | |
1693 | type. We always output the type if it has no elements, | |
1694 | for simplicity. */ | |
1695 | if (mt->elements == NULL) | |
1696 | bfd_release (input_bfd, (PTR) mt); | |
1697 | else | |
1698 | { | |
1699 | struct coff_debug_merge_type *mtl; | |
1700 | ||
1701 | for (mtl = mh->types; mtl != NULL; mtl = mtl->next) | |
1702 | { | |
1703 | struct coff_debug_merge_element *me, *mel; | |
1704 | ||
1705 | if (mtl->class != mt->class) | |
1706 | continue; | |
1707 | ||
1708 | for (me = mt->elements, mel = mtl->elements; | |
1709 | me != NULL && mel != NULL; | |
1710 | me = me->next, mel = mel->next) | |
1711 | { | |
1712 | if (strcmp (me->name, mel->name) != 0 | |
1713 | || me->type != mel->type | |
1714 | || me->tagndx != mel->tagndx) | |
1715 | break; | |
1716 | } | |
1717 | ||
1718 | if (me == NULL && mel == NULL) | |
1719 | break; | |
1720 | } | |
1721 | ||
1722 | if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base) | |
1723 | { | |
1724 | /* This is the first definition of this type. */ | |
1725 | mt->indx = output_index; | |
1726 | mt->next = mh->types; | |
1727 | mh->types = mt; | |
1728 | } | |
1729 | else | |
1730 | { | |
1731 | /* This is a redefinition which can be merged. */ | |
1732 | bfd_release (input_bfd, (PTR) mt); | |
1733 | *indexp = mtl->indx; | |
1734 | add = (eslend - esym) / isymesz; | |
1735 | skip = true; | |
1736 | } | |
1737 | } | |
1738 | } | |
1739 | ||
1740 | /* We now know whether we are to skip this symbol or not. */ | |
1741 | if (! skip) | |
1742 | { | |
1743 | /* Adjust the symbol in order to output it. */ | |
1744 | ||
1745 | if (isym._n._n_n._n_zeroes == 0 | |
1746 | && isym._n._n_n._n_offset != 0) | |
1747 | { | |
1748 | const char *name; | |
1749 | bfd_size_type indx; | |
1750 | ||
1751 | /* This symbol has a long name. Enter it in the string | |
1752 | table we are building. Note that we do not check | |
1753 | bfd_coff_symname_in_debug. That is only true for | |
1754 | XCOFF, and XCOFF requires different linking code | |
1755 | anyhow. */ | |
1756 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, | |
1757 | (char *) NULL); | |
1758 | if (name == NULL) | |
1759 | return false; | |
1760 | indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); | |
1761 | if (indx == (bfd_size_type) -1) | |
1762 | return false; | |
1763 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
1764 | } | |
1765 | ||
8add8e30 | 1766 | switch (isym.n_sclass) |
252b5132 | 1767 | { |
8add8e30 ILT |
1768 | case C_AUTO: |
1769 | case C_MOS: | |
1770 | case C_EOS: | |
1771 | case C_MOE: | |
1772 | case C_MOU: | |
1773 | case C_UNTAG: | |
1774 | case C_STRTAG: | |
1775 | case C_ENTAG: | |
1776 | case C_TPDEF: | |
1777 | case C_ARG: | |
1778 | case C_USTATIC: | |
1779 | case C_REG: | |
1780 | case C_REGPARM: | |
1781 | case C_FIELD: | |
1782 | /* The symbol value should not be modified. */ | |
1783 | break; | |
1784 | ||
1785 | case C_FCN: | |
1786 | if (obj_pe (input_bfd) | |
1787 | && strcmp (isym.n_name, ".bf") != 0 | |
1788 | && isym.n_scnum > 0) | |
1789 | { | |
1790 | /* For PE, .lf and .ef get their value left alone, | |
1791 | while .bf gets relocated. However, they all have | |
1792 | "real" section numbers, and need to be moved into | |
1793 | the new section. */ | |
1794 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1795 | break; | |
1796 | } | |
1797 | /* Fall through. */ | |
1798 | default: | |
1799 | case C_LABEL: /* Not completely sure about these 2 */ | |
1800 | case C_EXTDEF: | |
1801 | case C_BLOCK: | |
1802 | case C_EFCN: | |
1803 | case C_NULL: | |
1804 | case C_EXT: | |
1805 | case C_STAT: | |
1806 | case C_SECTION: | |
1807 | case C_NT_WEAK: | |
1808 | /* Compute new symbol location. */ | |
1809 | if (isym.n_scnum > 0) | |
1810 | { | |
1811 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1812 | isym.n_value += (*secpp)->output_offset; | |
1813 | if (! obj_pe (input_bfd)) | |
1814 | isym.n_value -= (*secpp)->vma; | |
1815 | if (! obj_pe (finfo->output_bfd)) | |
1816 | isym.n_value += (*secpp)->output_section->vma; | |
1817 | } | |
1818 | break; | |
1819 | ||
1820 | case C_FILE: | |
1821 | /* The value of a C_FILE symbol is the symbol index of | |
1822 | the next C_FILE symbol. The value of the last C_FILE | |
1823 | symbol is the symbol index to the first external | |
1824 | symbol (actually, coff_renumber_symbols does not get | |
1825 | this right--it just sets the value of the last C_FILE | |
1826 | symbol to zero--and nobody has ever complained about | |
1827 | it). We try to get this right, below, just before we | |
1828 | write the symbols out, but in the general case we may | |
1829 | have to write the symbol out twice. */ | |
252b5132 | 1830 | |
252b5132 | 1831 | if (finfo->last_file_index != -1 |
cea4409c | 1832 | && finfo->last_file.n_value != (bfd_vma) output_index) |
252b5132 | 1833 | { |
8add8e30 ILT |
1834 | /* We must correct the value of the last C_FILE |
1835 | entry. */ | |
252b5132 RH |
1836 | finfo->last_file.n_value = output_index; |
1837 | if ((bfd_size_type) finfo->last_file_index >= syment_base) | |
1838 | { | |
1839 | /* The last C_FILE symbol is in this input file. */ | |
1840 | bfd_coff_swap_sym_out (output_bfd, | |
1841 | (PTR) &finfo->last_file, | |
1842 | (PTR) (finfo->outsyms | |
1843 | + ((finfo->last_file_index | |
1844 | - syment_base) | |
1845 | * osymesz))); | |
1846 | } | |
1847 | else | |
1848 | { | |
1849 | /* We have already written out the last C_FILE | |
1850 | symbol. We need to write it out again. We | |
1851 | borrow *outsym temporarily. */ | |
1852 | bfd_coff_swap_sym_out (output_bfd, | |
1853 | (PTR) &finfo->last_file, | |
1854 | (PTR) outsym); | |
1855 | if (bfd_seek (output_bfd, | |
1856 | (obj_sym_filepos (output_bfd) | |
1857 | + finfo->last_file_index * osymesz), | |
1858 | SEEK_SET) != 0 | |
1859 | || (bfd_write (outsym, osymesz, 1, output_bfd) | |
1860 | != osymesz)) | |
1861 | return false; | |
1862 | } | |
1863 | } | |
1864 | ||
1865 | finfo->last_file_index = output_index; | |
1866 | finfo->last_file = isym; | |
8add8e30 | 1867 | break; |
252b5132 RH |
1868 | } |
1869 | ||
1870 | /* If doing task linking, convert normal global function symbols to | |
e4202681 NC |
1871 | static functions. */ |
1872 | if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym)) | |
252b5132 RH |
1873 | isym.n_sclass = C_STAT; |
1874 | ||
1875 | /* Output the symbol. */ | |
1876 | ||
1877 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); | |
1878 | ||
1879 | *indexp = output_index; | |
1880 | ||
1881 | if (global) | |
1882 | { | |
1883 | long indx; | |
1884 | struct coff_link_hash_entry *h; | |
1885 | ||
1886 | indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1887 | / isymesz); | |
1888 | h = obj_coff_sym_hashes (input_bfd)[indx]; | |
1889 | if (h == NULL) | |
1890 | { | |
1891 | /* This can happen if there were errors earlier in | |
1892 | the link. */ | |
1893 | bfd_set_error (bfd_error_bad_value); | |
1894 | return false; | |
1895 | } | |
1896 | h->indx = output_index; | |
1897 | } | |
1898 | ||
1899 | output_index += add; | |
1900 | outsym += add * osymesz; | |
1901 | } | |
1902 | ||
1903 | esym += add * isymesz; | |
1904 | isymp += add; | |
1905 | ++secpp; | |
1906 | ++indexp; | |
1907 | for (--add; add > 0; --add) | |
1908 | { | |
1909 | *secpp++ = NULL; | |
1910 | *indexp++ = -1; | |
1911 | } | |
1912 | } | |
1913 | ||
1914 | /* Fix up the aux entries. This must be done in a separate pass, | |
1915 | because we don't know the correct symbol indices until we have | |
1916 | already decided which symbols we are going to keep. */ | |
1917 | ||
1918 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1919 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1920 | isymp = finfo->internal_syms; | |
1921 | indexp = finfo->sym_indices; | |
1922 | sym_hash = obj_coff_sym_hashes (input_bfd); | |
1923 | outsym = finfo->outsyms; | |
1924 | while (esym < esym_end) | |
1925 | { | |
1926 | int add; | |
1927 | ||
1928 | add = 1 + isymp->n_numaux; | |
1929 | ||
1930 | if ((*indexp < 0 | |
1931 | || (bfd_size_type) *indexp < syment_base) | |
1932 | && (*sym_hash == NULL | |
1933 | || (*sym_hash)->auxbfd != input_bfd)) | |
1934 | esym += add * isymesz; | |
1935 | else | |
1936 | { | |
1937 | struct coff_link_hash_entry *h; | |
1938 | int i; | |
1939 | ||
1940 | h = NULL; | |
1941 | if (*indexp < 0) | |
1942 | { | |
1943 | h = *sym_hash; | |
1944 | ||
1945 | /* The m68k-motorola-sysv assembler will sometimes | |
1946 | generate two symbols with the same name, but only one | |
1947 | will have aux entries. */ | |
1948 | BFD_ASSERT (isymp->n_numaux == 0 | |
1949 | || h->numaux == isymp->n_numaux); | |
1950 | } | |
1951 | ||
1952 | esym += isymesz; | |
1953 | ||
1954 | if (h == NULL) | |
1955 | outsym += osymesz; | |
1956 | ||
1957 | /* Handle the aux entries. This handling is based on | |
1958 | coff_pointerize_aux. I don't know if it always correct. */ | |
1959 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) | |
1960 | { | |
1961 | union internal_auxent aux; | |
1962 | union internal_auxent *auxp; | |
1963 | ||
1964 | if (h != NULL) | |
1965 | auxp = h->aux + i; | |
1966 | else | |
1967 | { | |
1968 | bfd_coff_swap_aux_in (input_bfd, (PTR) esym, isymp->n_type, | |
1969 | isymp->n_sclass, i, isymp->n_numaux, | |
1970 | (PTR) &aux); | |
1971 | auxp = &aux; | |
1972 | } | |
1973 | ||
1974 | if (isymp->n_sclass == C_FILE) | |
1975 | { | |
1976 | /* If this is a long filename, we must put it in the | |
1977 | string table. */ | |
1978 | if (auxp->x_file.x_n.x_zeroes == 0 | |
1979 | && auxp->x_file.x_n.x_offset != 0) | |
1980 | { | |
1981 | const char *filename; | |
1982 | bfd_size_type indx; | |
1983 | ||
1984 | BFD_ASSERT (auxp->x_file.x_n.x_offset | |
1985 | >= STRING_SIZE_SIZE); | |
1986 | if (strings == NULL) | |
1987 | { | |
1988 | strings = _bfd_coff_read_string_table (input_bfd); | |
1989 | if (strings == NULL) | |
1990 | return false; | |
1991 | } | |
1992 | filename = strings + auxp->x_file.x_n.x_offset; | |
1993 | indx = _bfd_stringtab_add (finfo->strtab, filename, | |
1994 | hash, copy); | |
1995 | if (indx == (bfd_size_type) -1) | |
1996 | return false; | |
1997 | auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; | |
1998 | } | |
1999 | } | |
2000 | else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) | |
2001 | { | |
2002 | unsigned long indx; | |
2003 | ||
2004 | if (ISFCN (isymp->n_type) | |
2005 | || ISTAG (isymp->n_sclass) | |
2006 | || isymp->n_sclass == C_BLOCK | |
2007 | || isymp->n_sclass == C_FCN) | |
2008 | { | |
2009 | indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l; | |
2010 | if (indx > 0 | |
2011 | && indx < obj_raw_syment_count (input_bfd)) | |
2012 | { | |
2013 | /* We look forward through the symbol for | |
2014 | the index of the next symbol we are going | |
2015 | to include. I don't know if this is | |
2016 | entirely right. */ | |
2017 | while ((finfo->sym_indices[indx] < 0 | |
2018 | || ((bfd_size_type) finfo->sym_indices[indx] | |
2019 | < syment_base)) | |
2020 | && indx < obj_raw_syment_count (input_bfd)) | |
2021 | ++indx; | |
2022 | if (indx >= obj_raw_syment_count (input_bfd)) | |
2023 | indx = output_index; | |
2024 | else | |
2025 | indx = finfo->sym_indices[indx]; | |
2026 | auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx; | |
2027 | } | |
2028 | } | |
2029 | ||
2030 | indx = auxp->x_sym.x_tagndx.l; | |
2031 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) | |
2032 | { | |
2033 | long symindx; | |
2034 | ||
2035 | symindx = finfo->sym_indices[indx]; | |
2036 | if (symindx < 0) | |
2037 | auxp->x_sym.x_tagndx.l = 0; | |
2038 | else | |
2039 | auxp->x_sym.x_tagndx.l = symindx; | |
2040 | } | |
2041 | ||
2042 | /* The .bf symbols are supposed to be linked through | |
2043 | the endndx field. We need to carry this list | |
2044 | across object files. */ | |
2045 | if (i == 0 | |
2046 | && h == NULL | |
2047 | && isymp->n_sclass == C_FCN | |
2048 | && (isymp->_n._n_n._n_zeroes != 0 | |
2049 | || isymp->_n._n_n._n_offset == 0) | |
2050 | && isymp->_n._n_name[0] == '.' | |
2051 | && isymp->_n._n_name[1] == 'b' | |
2052 | && isymp->_n._n_name[2] == 'f' | |
2053 | && isymp->_n._n_name[3] == '\0') | |
2054 | { | |
2055 | if (finfo->last_bf_index != -1) | |
2056 | { | |
2057 | finfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
2058 | *indexp; | |
2059 | ||
2060 | if ((bfd_size_type) finfo->last_bf_index | |
2061 | >= syment_base) | |
2062 | { | |
2063 | PTR auxout; | |
2064 | ||
2065 | /* The last .bf symbol is in this input | |
2066 | file. This will only happen if the | |
2067 | assembler did not set up the .bf | |
2068 | endndx symbols correctly. */ | |
2069 | auxout = (PTR) (finfo->outsyms | |
2070 | + ((finfo->last_bf_index | |
2071 | - syment_base) | |
2072 | * osymesz)); | |
2073 | bfd_coff_swap_aux_out (output_bfd, | |
2074 | (PTR) &finfo->last_bf, | |
2075 | isymp->n_type, | |
2076 | isymp->n_sclass, | |
2077 | 0, isymp->n_numaux, | |
2078 | auxout); | |
2079 | } | |
2080 | else | |
2081 | { | |
2082 | /* We have already written out the last | |
2083 | .bf aux entry. We need to write it | |
2084 | out again. We borrow *outsym | |
2085 | temporarily. FIXME: This case should | |
2086 | be made faster. */ | |
2087 | bfd_coff_swap_aux_out (output_bfd, | |
2088 | (PTR) &finfo->last_bf, | |
2089 | isymp->n_type, | |
2090 | isymp->n_sclass, | |
2091 | 0, isymp->n_numaux, | |
2092 | (PTR) outsym); | |
2093 | if (bfd_seek (output_bfd, | |
2094 | (obj_sym_filepos (output_bfd) | |
2095 | + finfo->last_bf_index * osymesz), | |
2096 | SEEK_SET) != 0 | |
2097 | || bfd_write (outsym, osymesz, 1, | |
2098 | output_bfd) != osymesz) | |
2099 | return false; | |
2100 | } | |
2101 | } | |
2102 | ||
2103 | if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0) | |
2104 | finfo->last_bf_index = -1; | |
2105 | else | |
2106 | { | |
2107 | /* The endndx field of this aux entry must | |
2108 | be updated with the symbol number of the | |
2109 | next .bf symbol. */ | |
2110 | finfo->last_bf = *auxp; | |
2111 | finfo->last_bf_index = (((outsym - finfo->outsyms) | |
2112 | / osymesz) | |
2113 | + syment_base); | |
2114 | } | |
2115 | } | |
2116 | } | |
2117 | ||
2118 | if (h == NULL) | |
2119 | { | |
2120 | bfd_coff_swap_aux_out (output_bfd, (PTR) auxp, isymp->n_type, | |
2121 | isymp->n_sclass, i, isymp->n_numaux, | |
2122 | (PTR) outsym); | |
2123 | outsym += osymesz; | |
2124 | } | |
2125 | ||
2126 | esym += isymesz; | |
2127 | } | |
2128 | } | |
2129 | ||
2130 | indexp += add; | |
2131 | isymp += add; | |
2132 | sym_hash += add; | |
2133 | } | |
2134 | ||
2135 | /* Relocate the line numbers, unless we are stripping them. */ | |
2136 | if (finfo->info->strip == strip_none | |
2137 | || finfo->info->strip == strip_some) | |
2138 | { | |
2139 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2140 | { | |
2141 | bfd_vma offset; | |
2142 | bfd_byte *eline; | |
2143 | bfd_byte *elineend; | |
b545f675 ILT |
2144 | bfd_byte *oeline; |
2145 | boolean skipping; | |
252b5132 RH |
2146 | |
2147 | /* FIXME: If SEC_HAS_CONTENTS is not for the section, then | |
2148 | build_link_order in ldwrite.c will not have created a | |
2149 | link order, which means that we will not have seen this | |
2150 | input section in _bfd_coff_final_link, which means that | |
2151 | we will not have allocated space for the line numbers of | |
2152 | this section. I don't think line numbers can be | |
2153 | meaningful for a section which does not have | |
2154 | SEC_HAS_CONTENTS set, but, if they do, this must be | |
2155 | changed. */ | |
2156 | if (o->lineno_count == 0 | |
2157 | || (o->output_section->flags & SEC_HAS_CONTENTS) == 0) | |
2158 | continue; | |
2159 | ||
2160 | if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0 | |
2161 | || bfd_read (finfo->linenos, linesz, o->lineno_count, | |
2162 | input_bfd) != linesz * o->lineno_count) | |
2163 | return false; | |
2164 | ||
2165 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2166 | eline = finfo->linenos; | |
b545f675 | 2167 | oeline = finfo->linenos; |
252b5132 | 2168 | elineend = eline + linesz * o->lineno_count; |
b545f675 | 2169 | skipping = false; |
252b5132 RH |
2170 | for (; eline < elineend; eline += linesz) |
2171 | { | |
2172 | struct internal_lineno iline; | |
2173 | ||
2174 | bfd_coff_swap_lineno_in (input_bfd, (PTR) eline, (PTR) &iline); | |
2175 | ||
2176 | if (iline.l_lnno != 0) | |
2177 | iline.l_addr.l_paddr += offset; | |
2178 | else if (iline.l_addr.l_symndx >= 0 | |
2179 | && ((unsigned long) iline.l_addr.l_symndx | |
2180 | < obj_raw_syment_count (input_bfd))) | |
2181 | { | |
2182 | long indx; | |
2183 | ||
2184 | indx = finfo->sym_indices[iline.l_addr.l_symndx]; | |
2185 | ||
2186 | if (indx < 0) | |
2187 | { | |
2188 | /* These line numbers are attached to a symbol | |
b545f675 ILT |
2189 | which we are stripping. We must discard the |
2190 | line numbers because reading them back with | |
2191 | no associated symbol (or associating them all | |
2192 | with symbol #0) will fail. We can't regain | |
2193 | the space in the output file, but at least | |
2194 | they're dense. */ | |
2195 | skipping = true; | |
252b5132 RH |
2196 | } |
2197 | else | |
2198 | { | |
2199 | struct internal_syment is; | |
2200 | union internal_auxent ia; | |
2201 | ||
2202 | /* Fix up the lnnoptr field in the aux entry of | |
2203 | the symbol. It turns out that we can't do | |
2204 | this when we modify the symbol aux entries, | |
2205 | because gas sometimes screws up the lnnoptr | |
2206 | field and makes it an offset from the start | |
2207 | of the line numbers rather than an absolute | |
2208 | file index. */ | |
2209 | bfd_coff_swap_sym_in (output_bfd, | |
2210 | (PTR) (finfo->outsyms | |
2211 | + ((indx - syment_base) | |
2212 | * osymesz)), | |
2213 | (PTR) &is); | |
2214 | if ((ISFCN (is.n_type) | |
2215 | || is.n_sclass == C_BLOCK) | |
2216 | && is.n_numaux >= 1) | |
2217 | { | |
2218 | PTR auxptr; | |
2219 | ||
2220 | auxptr = (PTR) (finfo->outsyms | |
2221 | + ((indx - syment_base + 1) | |
2222 | * osymesz)); | |
2223 | bfd_coff_swap_aux_in (output_bfd, auxptr, | |
2224 | is.n_type, is.n_sclass, | |
2225 | 0, is.n_numaux, (PTR) &ia); | |
2226 | ia.x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
2227 | (o->output_section->line_filepos | |
2228 | + o->output_section->lineno_count * linesz | |
2229 | + eline - finfo->linenos); | |
2230 | bfd_coff_swap_aux_out (output_bfd, (PTR) &ia, | |
2231 | is.n_type, is.n_sclass, 0, | |
2232 | is.n_numaux, auxptr); | |
2233 | } | |
b545f675 | 2234 | |
60bcf0fa | 2235 | skipping = false; |
252b5132 RH |
2236 | } |
2237 | ||
2238 | iline.l_addr.l_symndx = indx; | |
2239 | } | |
2240 | ||
b545f675 ILT |
2241 | if (!skipping) |
2242 | { | |
2243 | bfd_coff_swap_lineno_out (output_bfd, (PTR) &iline, | |
2244 | (PTR) oeline); | |
2245 | oeline += linesz; | |
2246 | } | |
252b5132 RH |
2247 | } |
2248 | ||
2249 | if (bfd_seek (output_bfd, | |
2250 | (o->output_section->line_filepos | |
2251 | + o->output_section->lineno_count * linesz), | |
2252 | SEEK_SET) != 0 | |
b545f675 ILT |
2253 | || (bfd_write (finfo->linenos, 1, oeline - finfo->linenos, |
2254 | output_bfd) | |
2255 | != (bfd_size_type) (oeline - finfo->linenos))) | |
252b5132 RH |
2256 | return false; |
2257 | ||
b545f675 ILT |
2258 | o->output_section->lineno_count += |
2259 | (oeline - finfo->linenos) / linesz; | |
252b5132 RH |
2260 | } |
2261 | } | |
2262 | ||
2263 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE | |
2264 | symbol will be the first symbol in the next input file. In the | |
2265 | normal case, this will save us from writing out the C_FILE symbol | |
2266 | again. */ | |
2267 | if (finfo->last_file_index != -1 | |
2268 | && (bfd_size_type) finfo->last_file_index >= syment_base) | |
2269 | { | |
2270 | finfo->last_file.n_value = output_index; | |
2271 | bfd_coff_swap_sym_out (output_bfd, (PTR) &finfo->last_file, | |
2272 | (PTR) (finfo->outsyms | |
2273 | + ((finfo->last_file_index - syment_base) | |
2274 | * osymesz))); | |
2275 | } | |
2276 | ||
2277 | /* Write the modified symbols to the output file. */ | |
2278 | if (outsym > finfo->outsyms) | |
2279 | { | |
2280 | if (bfd_seek (output_bfd, | |
2281 | obj_sym_filepos (output_bfd) + syment_base * osymesz, | |
2282 | SEEK_SET) != 0 | |
2283 | || (bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1, | |
2284 | output_bfd) | |
2285 | != (bfd_size_type) (outsym - finfo->outsyms))) | |
2286 | return false; | |
2287 | ||
2288 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) | |
2289 | + (outsym - finfo->outsyms) / osymesz) | |
2290 | == output_index); | |
2291 | ||
2292 | obj_raw_syment_count (output_bfd) = output_index; | |
2293 | } | |
2294 | ||
2295 | /* Relocate the contents of each section. */ | |
2296 | adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx; | |
2297 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2298 | { | |
2299 | bfd_byte *contents; | |
2300 | struct coff_section_tdata *secdata; | |
2301 | ||
2302 | if (! o->linker_mark) | |
2303 | { | |
2304 | /* This section was omitted from the link. */ | |
2305 | continue; | |
2306 | } | |
2307 | ||
2308 | if ((o->flags & SEC_HAS_CONTENTS) == 0 | |
2309 | || (o->_raw_size == 0 && (o->flags & SEC_RELOC) == 0)) | |
2310 | { | |
2311 | if ((o->flags & SEC_RELOC) != 0 | |
2312 | && o->reloc_count != 0) | |
2313 | { | |
2314 | ((*_bfd_error_handler) | |
2315 | (_("%s: relocs in section `%s', but it has no contents"), | |
2316 | bfd_get_filename (input_bfd), | |
2317 | bfd_get_section_name (input_bfd, o))); | |
2318 | bfd_set_error (bfd_error_no_contents); | |
2319 | return false; | |
2320 | } | |
2321 | ||
2322 | continue; | |
2323 | } | |
2324 | ||
2325 | secdata = coff_section_data (input_bfd, o); | |
2326 | if (secdata != NULL && secdata->contents != NULL) | |
2327 | contents = secdata->contents; | |
2328 | else | |
2329 | { | |
2330 | if (! bfd_get_section_contents (input_bfd, o, finfo->contents, | |
2331 | (file_ptr) 0, o->_raw_size)) | |
2332 | return false; | |
2333 | contents = finfo->contents; | |
2334 | } | |
2335 | ||
2336 | if ((o->flags & SEC_RELOC) != 0) | |
2337 | { | |
2338 | int target_index; | |
2339 | struct internal_reloc *internal_relocs; | |
2340 | struct internal_reloc *irel; | |
2341 | ||
2342 | /* Read in the relocs. */ | |
2343 | target_index = o->output_section->target_index; | |
2344 | internal_relocs = (_bfd_coff_read_internal_relocs | |
2345 | (input_bfd, o, false, finfo->external_relocs, | |
2346 | finfo->info->relocateable, | |
2347 | (finfo->info->relocateable | |
2348 | ? (finfo->section_info[target_index].relocs | |
2349 | + o->output_section->reloc_count) | |
2350 | : finfo->internal_relocs))); | |
2351 | if (internal_relocs == NULL) | |
2352 | return false; | |
2353 | ||
2354 | /* Call processor specific code to relocate the section | |
2355 | contents. */ | |
2356 | if (! bfd_coff_relocate_section (output_bfd, finfo->info, | |
2357 | input_bfd, o, | |
2358 | contents, | |
2359 | internal_relocs, | |
2360 | finfo->internal_syms, | |
2361 | finfo->sec_ptrs)) | |
2362 | return false; | |
2363 | ||
2364 | if (finfo->info->relocateable) | |
2365 | { | |
2366 | bfd_vma offset; | |
2367 | struct internal_reloc *irelend; | |
2368 | struct coff_link_hash_entry **rel_hash; | |
2369 | ||
2370 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2371 | irel = internal_relocs; | |
2372 | irelend = irel + o->reloc_count; | |
2373 | rel_hash = (finfo->section_info[target_index].rel_hashes | |
2374 | + o->output_section->reloc_count); | |
2375 | for (; irel < irelend; irel++, rel_hash++) | |
2376 | { | |
2377 | struct coff_link_hash_entry *h; | |
2378 | boolean adjusted; | |
2379 | ||
2380 | *rel_hash = NULL; | |
2381 | ||
2382 | /* Adjust the reloc address and symbol index. */ | |
2383 | ||
2384 | irel->r_vaddr += offset; | |
2385 | ||
2386 | if (irel->r_symndx == -1) | |
2387 | continue; | |
2388 | ||
2389 | if (adjust_symndx) | |
2390 | { | |
2391 | if (! (*adjust_symndx) (output_bfd, finfo->info, | |
2392 | input_bfd, o, irel, | |
2393 | &adjusted)) | |
2394 | return false; | |
2395 | if (adjusted) | |
2396 | continue; | |
2397 | } | |
2398 | ||
2399 | h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx]; | |
2400 | if (h != NULL) | |
2401 | { | |
2402 | /* This is a global symbol. */ | |
2403 | if (h->indx >= 0) | |
2404 | irel->r_symndx = h->indx; | |
2405 | else | |
2406 | { | |
2407 | /* This symbol is being written at the end | |
2408 | of the file, and we do not yet know the | |
2409 | symbol index. We save the pointer to the | |
2410 | hash table entry in the rel_hash list. | |
2411 | We set the indx field to -2 to indicate | |
2412 | that this symbol must not be stripped. */ | |
2413 | *rel_hash = h; | |
2414 | h->indx = -2; | |
2415 | } | |
2416 | } | |
2417 | else | |
2418 | { | |
2419 | long indx; | |
2420 | ||
2421 | indx = finfo->sym_indices[irel->r_symndx]; | |
2422 | if (indx != -1) | |
2423 | irel->r_symndx = indx; | |
2424 | else | |
2425 | { | |
2426 | struct internal_syment *is; | |
2427 | const char *name; | |
2428 | char buf[SYMNMLEN + 1]; | |
2429 | ||
2430 | /* This reloc is against a symbol we are | |
2431 | stripping. This should have been handled | |
2432 | by the 'dont_skip_symbol' code in the while | |
244148ad KH |
2433 | loop at the top of this function. */ |
2434 | ||
252b5132 RH |
2435 | is = finfo->internal_syms + irel->r_symndx; |
2436 | ||
2437 | name = (_bfd_coff_internal_syment_name | |
2438 | (input_bfd, is, buf)); | |
2439 | if (name == NULL) | |
2440 | return false; | |
2441 | ||
2442 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2443 | (finfo->info, name, input_bfd, o, | |
2444 | irel->r_vaddr))) | |
2445 | return false; | |
2446 | } | |
2447 | } | |
2448 | } | |
2449 | ||
2450 | o->output_section->reloc_count += o->reloc_count; | |
2451 | } | |
2452 | } | |
2453 | ||
2454 | /* Write out the modified section contents. */ | |
2455 | if (secdata == NULL || secdata->stab_info == NULL) | |
2456 | { | |
2457 | if (! bfd_set_section_contents (output_bfd, o->output_section, | |
244148ad KH |
2458 | contents, |
2459 | (file_ptr) | |
2460 | (o->output_offset * | |
9a968f43 | 2461 | bfd_octets_per_byte (output_bfd)), |
252b5132 RH |
2462 | (o->_cooked_size != 0 |
2463 | ? o->_cooked_size | |
2464 | : o->_raw_size))) | |
2465 | return false; | |
2466 | } | |
2467 | else | |
2468 | { | |
2469 | if (! (_bfd_write_section_stabs | |
2470 | (output_bfd, &coff_hash_table (finfo->info)->stab_info, | |
2471 | o, &secdata->stab_info, contents))) | |
2472 | return false; | |
2473 | } | |
2474 | } | |
2475 | ||
2476 | if (! finfo->info->keep_memory) | |
2477 | { | |
2478 | if (! _bfd_coff_free_symbols (input_bfd)) | |
2479 | return false; | |
2480 | } | |
2481 | ||
2482 | return true; | |
2483 | } | |
2484 | ||
2485 | /* Write out a global symbol. Called via coff_link_hash_traverse. */ | |
2486 | ||
2487 | boolean | |
2488 | _bfd_coff_write_global_sym (h, data) | |
2489 | struct coff_link_hash_entry *h; | |
2490 | PTR data; | |
2491 | { | |
2492 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
2493 | bfd *output_bfd; | |
2494 | struct internal_syment isym; | |
2495 | bfd_size_type symesz; | |
2496 | unsigned int i; | |
2497 | ||
2498 | output_bfd = finfo->output_bfd; | |
2499 | ||
2500 | if (h->indx >= 0) | |
2501 | return true; | |
2502 | ||
2503 | if (h->indx != -2 | |
2504 | && (finfo->info->strip == strip_all | |
2505 | || (finfo->info->strip == strip_some | |
2506 | && (bfd_hash_lookup (finfo->info->keep_hash, | |
2507 | h->root.root.string, false, false) | |
2508 | == NULL)))) | |
2509 | return true; | |
2510 | ||
2511 | switch (h->root.type) | |
2512 | { | |
2513 | default: | |
2514 | case bfd_link_hash_new: | |
2515 | abort (); | |
2516 | return false; | |
2517 | ||
2518 | case bfd_link_hash_undefined: | |
2519 | case bfd_link_hash_undefweak: | |
2520 | isym.n_scnum = N_UNDEF; | |
2521 | isym.n_value = 0; | |
2522 | break; | |
2523 | ||
2524 | case bfd_link_hash_defined: | |
2525 | case bfd_link_hash_defweak: | |
2526 | { | |
2527 | asection *sec; | |
2528 | ||
2529 | sec = h->root.u.def.section->output_section; | |
2530 | if (bfd_is_abs_section (sec)) | |
2531 | isym.n_scnum = N_ABS; | |
2532 | else | |
2533 | isym.n_scnum = sec->target_index; | |
2534 | isym.n_value = (h->root.u.def.value | |
2535 | + h->root.u.def.section->output_offset); | |
2536 | if (! obj_pe (finfo->output_bfd)) | |
2537 | isym.n_value += sec->vma; | |
2538 | } | |
2539 | break; | |
2540 | ||
2541 | case bfd_link_hash_common: | |
2542 | isym.n_scnum = N_UNDEF; | |
2543 | isym.n_value = h->root.u.c.size; | |
2544 | break; | |
2545 | ||
2546 | case bfd_link_hash_indirect: | |
2547 | case bfd_link_hash_warning: | |
2548 | /* Just ignore these. They can't be handled anyhow. */ | |
2549 | return true; | |
2550 | } | |
2551 | ||
2552 | if (strlen (h->root.root.string) <= SYMNMLEN) | |
2553 | strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); | |
2554 | else | |
2555 | { | |
2556 | boolean hash; | |
2557 | bfd_size_type indx; | |
2558 | ||
2559 | hash = true; | |
2560 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
2561 | hash = false; | |
2562 | indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash, | |
2563 | false); | |
2564 | if (indx == (bfd_size_type) -1) | |
2565 | { | |
2566 | finfo->failed = true; | |
2567 | return false; | |
2568 | } | |
2569 | isym._n._n_n._n_zeroes = 0; | |
2570 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
2571 | } | |
2572 | ||
2573 | isym.n_sclass = h->class; | |
2574 | isym.n_type = h->type; | |
2575 | ||
2576 | if (isym.n_sclass == C_NULL) | |
2577 | isym.n_sclass = C_EXT; | |
2578 | ||
2579 | /* If doing task linking and this is the pass where we convert | |
2580 | defined globals to statics, then do that conversion now. If the | |
2581 | symbol is not being converted, just ignore it and it will be | |
e4202681 | 2582 | output during a later pass. */ |
252b5132 RH |
2583 | if (finfo->global_to_static) |
2584 | { | |
e4202681 NC |
2585 | if (! IS_EXTERNAL (output_bfd, isym)) |
2586 | return true; | |
2587 | ||
252b5132 RH |
2588 | isym.n_sclass = C_STAT; |
2589 | } | |
2590 | ||
e4202681 NC |
2591 | /* When a weak symbol is not overriden by a strong one, |
2592 | turn it into an external symbol when not building a | |
2593 | shared or relocateable object. */ | |
2594 | if (! finfo->info->shared | |
2595 | && ! finfo->info->relocateable | |
2596 | && IS_WEAK_EXTERNAL (finfo->output_bfd, isym)) | |
2597 | isym.n_sclass = C_EXT; | |
2598 | ||
252b5132 | 2599 | isym.n_numaux = h->numaux; |
244148ad | 2600 | |
252b5132 RH |
2601 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) finfo->outsyms); |
2602 | ||
2603 | symesz = bfd_coff_symesz (output_bfd); | |
2604 | ||
2605 | if (bfd_seek (output_bfd, | |
2606 | (obj_sym_filepos (output_bfd) | |
2607 | + obj_raw_syment_count (output_bfd) * symesz), | |
2608 | SEEK_SET) != 0 | |
2609 | || bfd_write (finfo->outsyms, symesz, 1, output_bfd) != symesz) | |
2610 | { | |
2611 | finfo->failed = true; | |
2612 | return false; | |
2613 | } | |
2614 | ||
2615 | h->indx = obj_raw_syment_count (output_bfd); | |
2616 | ||
2617 | ++obj_raw_syment_count (output_bfd); | |
2618 | ||
2c546cd8 ILT |
2619 | /* Write out any associated aux entries. Most of the aux entries |
2620 | will have been modified in _bfd_coff_link_input_bfd. We have to | |
2621 | handle section aux entries here, now that we have the final | |
2622 | relocation and line number counts. */ | |
252b5132 RH |
2623 | for (i = 0; i < isym.n_numaux; i++) |
2624 | { | |
2c546cd8 ILT |
2625 | union internal_auxent *auxp; |
2626 | ||
2627 | auxp = h->aux + i; | |
2628 | ||
2629 | /* Look for a section aux entry here using the same tests that | |
2630 | coff_swap_aux_out uses. */ | |
2631 | if (i == 0 | |
2632 | && (isym.n_sclass == C_STAT | |
2633 | || isym.n_sclass == C_HIDDEN) | |
2634 | && isym.n_type == T_NULL | |
2635 | && (h->root.type == bfd_link_hash_defined | |
2636 | || h->root.type == bfd_link_hash_defweak)) | |
2637 | { | |
2638 | asection *sec; | |
2639 | ||
2640 | sec = h->root.u.def.section->output_section; | |
2641 | if (sec != NULL) | |
2642 | { | |
2643 | auxp->x_scn.x_scnlen = (sec->_cooked_size != 0 | |
2644 | ? sec->_cooked_size | |
2645 | : sec->_raw_size); | |
2646 | ||
2647 | /* For PE, an overflow on the final link reportedly does | |
2648 | not matter. FIXME: Why not? */ | |
2649 | ||
2650 | if (sec->reloc_count > 0xffff | |
2651 | && (! obj_pe (output_bfd) | |
2652 | || finfo->info->relocateable)) | |
2653 | (*_bfd_error_handler) | |
2654 | (_("%s: %s: reloc overflow: 0x%lx > 0xffff"), | |
2655 | bfd_get_filename (output_bfd), | |
2656 | bfd_get_section_name (output_bfd, sec), | |
2657 | sec->reloc_count); | |
2658 | ||
2659 | if (sec->lineno_count > 0xffff | |
2660 | && (! obj_pe (output_bfd) | |
2661 | || finfo->info->relocateable)) | |
2662 | (*_bfd_error_handler) | |
2663 | (_("%s: warning: %s: line number overflow: 0x%lx > 0xffff"), | |
2664 | bfd_get_filename (output_bfd), | |
2665 | bfd_get_section_name (output_bfd, sec), | |
2666 | sec->lineno_count); | |
2667 | ||
2668 | auxp->x_scn.x_nreloc = sec->reloc_count; | |
2669 | auxp->x_scn.x_nlinno = sec->lineno_count; | |
2670 | auxp->x_scn.x_checksum = 0; | |
2671 | auxp->x_scn.x_associated = 0; | |
2672 | auxp->x_scn.x_comdat = 0; | |
2673 | } | |
2674 | } | |
2675 | ||
2676 | bfd_coff_swap_aux_out (output_bfd, (PTR) auxp, isym.n_type, | |
252b5132 RH |
2677 | isym.n_sclass, i, isym.n_numaux, |
2678 | (PTR) finfo->outsyms); | |
2679 | if (bfd_write (finfo->outsyms, symesz, 1, output_bfd) != symesz) | |
2680 | { | |
2681 | finfo->failed = true; | |
2682 | return false; | |
2683 | } | |
2684 | ++obj_raw_syment_count (output_bfd); | |
2685 | } | |
2686 | ||
2687 | return true; | |
2688 | } | |
2689 | ||
2690 | /* Write out task global symbols, converting them to statics. Called | |
2691 | via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do | |
244148ad | 2692 | the dirty work, if the symbol we are processing needs conversion. */ |
252b5132 RH |
2693 | |
2694 | boolean | |
2695 | _bfd_coff_write_task_globals (h, data) | |
2696 | struct coff_link_hash_entry *h; | |
2697 | PTR data; | |
2698 | { | |
2699 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
2700 | boolean rtnval = true; | |
2701 | boolean save_global_to_static; | |
2702 | ||
2703 | if (h->indx < 0) | |
2704 | { | |
2705 | switch (h->root.type) | |
2706 | { | |
2707 | case bfd_link_hash_defined: | |
2708 | case bfd_link_hash_defweak: | |
2709 | save_global_to_static = finfo->global_to_static; | |
2710 | finfo->global_to_static = true; | |
2711 | rtnval = _bfd_coff_write_global_sym (h, data); | |
2712 | finfo->global_to_static = save_global_to_static; | |
2713 | break; | |
2714 | default: | |
2715 | break; | |
2716 | } | |
2717 | } | |
2718 | return (rtnval); | |
2719 | } | |
2720 | ||
2721 | /* Handle a link order which is supposed to generate a reloc. */ | |
2722 | ||
2723 | boolean | |
2724 | _bfd_coff_reloc_link_order (output_bfd, finfo, output_section, link_order) | |
2725 | bfd *output_bfd; | |
2726 | struct coff_final_link_info *finfo; | |
2727 | asection *output_section; | |
2728 | struct bfd_link_order *link_order; | |
2729 | { | |
2730 | reloc_howto_type *howto; | |
2731 | struct internal_reloc *irel; | |
2732 | struct coff_link_hash_entry **rel_hash_ptr; | |
2733 | ||
2734 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); | |
2735 | if (howto == NULL) | |
2736 | { | |
2737 | bfd_set_error (bfd_error_bad_value); | |
2738 | return false; | |
2739 | } | |
2740 | ||
2741 | if (link_order->u.reloc.p->addend != 0) | |
2742 | { | |
2743 | bfd_size_type size; | |
2744 | bfd_byte *buf; | |
2745 | bfd_reloc_status_type rstat; | |
2746 | boolean ok; | |
2747 | ||
2748 | size = bfd_get_reloc_size (howto); | |
2749 | buf = (bfd_byte *) bfd_zmalloc (size); | |
2750 | if (buf == NULL) | |
2751 | return false; | |
2752 | ||
2753 | rstat = _bfd_relocate_contents (howto, output_bfd, | |
2754 | link_order->u.reloc.p->addend, buf); | |
2755 | switch (rstat) | |
2756 | { | |
2757 | case bfd_reloc_ok: | |
2758 | break; | |
2759 | default: | |
2760 | case bfd_reloc_outofrange: | |
2761 | abort (); | |
2762 | case bfd_reloc_overflow: | |
2763 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
2764 | (finfo->info, | |
2765 | (link_order->type == bfd_section_reloc_link_order | |
2766 | ? bfd_section_name (output_bfd, | |
2767 | link_order->u.reloc.p->u.section) | |
2768 | : link_order->u.reloc.p->u.name), | |
2769 | howto->name, link_order->u.reloc.p->addend, | |
2770 | (bfd *) NULL, (asection *) NULL, (bfd_vma) 0))) | |
2771 | { | |
2772 | free (buf); | |
2773 | return false; | |
2774 | } | |
2775 | break; | |
2776 | } | |
2777 | ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf, | |
244148ad | 2778 | (file_ptr) |
9a968f43 NC |
2779 | (link_order->offset * |
2780 | bfd_octets_per_byte (output_bfd)), size); | |
252b5132 RH |
2781 | free (buf); |
2782 | if (! ok) | |
2783 | return false; | |
2784 | } | |
2785 | ||
2786 | /* Store the reloc information in the right place. It will get | |
2787 | swapped and written out at the end of the final_link routine. */ | |
2788 | ||
2789 | irel = (finfo->section_info[output_section->target_index].relocs | |
2790 | + output_section->reloc_count); | |
2791 | rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes | |
2792 | + output_section->reloc_count); | |
2793 | ||
2794 | memset (irel, 0, sizeof (struct internal_reloc)); | |
2795 | *rel_hash_ptr = NULL; | |
2796 | ||
2797 | irel->r_vaddr = output_section->vma + link_order->offset; | |
2798 | ||
2799 | if (link_order->type == bfd_section_reloc_link_order) | |
2800 | { | |
2801 | /* We need to somehow locate a symbol in the right section. The | |
2802 | symbol must either have a value of zero, or we must adjust | |
2803 | the addend by the value of the symbol. FIXME: Write this | |
2804 | when we need it. The old linker couldn't handle this anyhow. */ | |
2805 | abort (); | |
2806 | *rel_hash_ptr = NULL; | |
2807 | irel->r_symndx = 0; | |
2808 | } | |
2809 | else | |
2810 | { | |
2811 | struct coff_link_hash_entry *h; | |
2812 | ||
2813 | h = ((struct coff_link_hash_entry *) | |
2814 | bfd_wrapped_link_hash_lookup (output_bfd, finfo->info, | |
2815 | link_order->u.reloc.p->u.name, | |
2816 | false, false, true)); | |
2817 | if (h != NULL) | |
2818 | { | |
2819 | if (h->indx >= 0) | |
2820 | irel->r_symndx = h->indx; | |
2821 | else | |
2822 | { | |
2823 | /* Set the index to -2 to force this symbol to get | |
2824 | written out. */ | |
2825 | h->indx = -2; | |
2826 | *rel_hash_ptr = h; | |
2827 | irel->r_symndx = 0; | |
2828 | } | |
2829 | } | |
2830 | else | |
2831 | { | |
2832 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2833 | (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL, | |
2834 | (asection *) NULL, (bfd_vma) 0))) | |
2835 | return false; | |
2836 | irel->r_symndx = 0; | |
2837 | } | |
2838 | } | |
2839 | ||
2840 | /* FIXME: Is this always right? */ | |
2841 | irel->r_type = howto->type; | |
2842 | ||
2843 | /* r_size is only used on the RS/6000, which needs its own linker | |
2844 | routines anyhow. r_extern is only used for ECOFF. */ | |
2845 | ||
2846 | /* FIXME: What is the right value for r_offset? Is zero OK? */ | |
2847 | ||
2848 | ++output_section->reloc_count; | |
2849 | ||
2850 | return true; | |
2851 | } | |
2852 | ||
2853 | /* A basic reloc handling routine which may be used by processors with | |
2854 | simple relocs. */ | |
2855 | ||
2856 | boolean | |
2857 | _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd, | |
2858 | input_section, contents, relocs, syms, | |
2859 | sections) | |
2860 | bfd *output_bfd; | |
2861 | struct bfd_link_info *info; | |
2862 | bfd *input_bfd; | |
2863 | asection *input_section; | |
2864 | bfd_byte *contents; | |
2865 | struct internal_reloc *relocs; | |
2866 | struct internal_syment *syms; | |
2867 | asection **sections; | |
2868 | { | |
2869 | struct internal_reloc *rel; | |
2870 | struct internal_reloc *relend; | |
2871 | ||
2872 | rel = relocs; | |
2873 | relend = rel + input_section->reloc_count; | |
2874 | for (; rel < relend; rel++) | |
2875 | { | |
2876 | long symndx; | |
2877 | struct coff_link_hash_entry *h; | |
2878 | struct internal_syment *sym; | |
2879 | bfd_vma addend; | |
2880 | bfd_vma val; | |
2881 | reloc_howto_type *howto; | |
2882 | bfd_reloc_status_type rstat; | |
2883 | ||
2884 | symndx = rel->r_symndx; | |
2885 | ||
2886 | if (symndx == -1) | |
2887 | { | |
2888 | h = NULL; | |
2889 | sym = NULL; | |
2890 | } | |
75987f83 ILT |
2891 | else if (symndx < 0 |
2892 | || (unsigned long) symndx >= obj_raw_syment_count (input_bfd)) | |
2893 | { | |
2894 | (*_bfd_error_handler) | |
2895 | ("%s: illegal symbol index %ld in relocs", | |
2896 | bfd_get_filename (input_bfd), symndx); | |
2897 | return false; | |
2898 | } | |
252b5132 | 2899 | else |
244148ad | 2900 | { |
252b5132 RH |
2901 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
2902 | sym = syms + symndx; | |
2903 | } | |
2904 | ||
2905 | /* COFF treats common symbols in one of two ways. Either the | |
2906 | size of the symbol is included in the section contents, or it | |
2907 | is not. We assume that the size is not included, and force | |
2908 | the rtype_to_howto function to adjust the addend as needed. */ | |
2909 | ||
2910 | if (sym != NULL && sym->n_scnum != 0) | |
2911 | addend = - sym->n_value; | |
2912 | else | |
2913 | addend = 0; | |
2914 | ||
252b5132 RH |
2915 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
2916 | sym, &addend); | |
2917 | if (howto == NULL) | |
2918 | return false; | |
2919 | ||
2920 | /* If we are doing a relocateable link, then we can just ignore | |
2921 | a PC relative reloc that is pcrel_offset. It will already | |
2922 | have the correct value. If this is not a relocateable link, | |
2923 | then we should ignore the symbol value. */ | |
2924 | if (howto->pc_relative && howto->pcrel_offset) | |
2925 | { | |
2926 | if (info->relocateable) | |
2927 | continue; | |
2928 | if (sym != NULL && sym->n_scnum != 0) | |
2929 | addend += sym->n_value; | |
2930 | } | |
2931 | ||
2932 | val = 0; | |
2933 | ||
2934 | if (h == NULL) | |
2935 | { | |
2936 | asection *sec; | |
2937 | ||
2938 | if (symndx == -1) | |
2939 | { | |
2940 | sec = bfd_abs_section_ptr; | |
2941 | val = 0; | |
2942 | } | |
2943 | else | |
2944 | { | |
2945 | sec = sections[symndx]; | |
2946 | val = (sec->output_section->vma | |
2947 | + sec->output_offset | |
2948 | + sym->n_value); | |
2949 | if (! obj_pe (input_bfd)) | |
2950 | val -= sec->vma; | |
2951 | } | |
2952 | } | |
2953 | else | |
2954 | { | |
2955 | if (h->root.type == bfd_link_hash_defined | |
2956 | || h->root.type == bfd_link_hash_defweak) | |
2957 | { | |
2958 | asection *sec; | |
2959 | ||
2960 | sec = h->root.u.def.section; | |
2961 | val = (h->root.u.def.value | |
2962 | + sec->output_section->vma | |
2963 | + sec->output_offset); | |
2964 | } | |
2965 | ||
bc7a577d PB |
2966 | else if (h->root.type == bfd_link_hash_undefweak) |
2967 | val = 0; | |
2968 | ||
252b5132 RH |
2969 | else if (! info->relocateable) |
2970 | { | |
2971 | if (! ((*info->callbacks->undefined_symbol) | |
2972 | (info, h->root.root.string, input_bfd, input_section, | |
5cc7c785 | 2973 | rel->r_vaddr - input_section->vma, true))) |
252b5132 RH |
2974 | return false; |
2975 | } | |
2976 | } | |
2977 | ||
2978 | if (info->base_file) | |
2979 | { | |
244148ad | 2980 | /* Emit a reloc if the backend thinks it needs it. */ |
252b5132 RH |
2981 | if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto)) |
2982 | { | |
2983 | /* Relocation to a symbol in a section which isn't | |
2984 | absolute. We output the address here to a file. | |
2985 | This file is then read by dlltool when generating the | |
2986 | reloc section. Note that the base file is not | |
2987 | portable between systems. We write out a long here, | |
2988 | and dlltool reads in a long. */ | |
244148ad KH |
2989 | long addr = (rel->r_vaddr |
2990 | - input_section->vma | |
2991 | + input_section->output_offset | |
252b5132 RH |
2992 | + input_section->output_section->vma); |
2993 | if (coff_data (output_bfd)->pe) | |
2994 | addr -= pe_data(output_bfd)->pe_opthdr.ImageBase; | |
2995 | if (fwrite (&addr, 1, sizeof (long), (FILE *) info->base_file) | |
2996 | != sizeof (long)) | |
2997 | { | |
2998 | bfd_set_error (bfd_error_system_call); | |
2999 | return false; | |
3000 | } | |
3001 | } | |
3002 | } | |
244148ad | 3003 | |
252b5132 RH |
3004 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3005 | contents, | |
3006 | rel->r_vaddr - input_section->vma, | |
3007 | val, addend); | |
3008 | ||
3009 | switch (rstat) | |
3010 | { | |
3011 | default: | |
3012 | abort (); | |
3013 | case bfd_reloc_ok: | |
3014 | break; | |
3015 | case bfd_reloc_outofrange: | |
3016 | (*_bfd_error_handler) | |
3017 | (_("%s: bad reloc address 0x%lx in section `%s'"), | |
3018 | bfd_get_filename (input_bfd), | |
3019 | (unsigned long) rel->r_vaddr, | |
3020 | bfd_get_section_name (input_bfd, input_section)); | |
3021 | return false; | |
3022 | case bfd_reloc_overflow: | |
3023 | { | |
3024 | const char *name; | |
3025 | char buf[SYMNMLEN + 1]; | |
3026 | ||
3027 | if (symndx == -1) | |
3028 | name = "*ABS*"; | |
3029 | else if (h != NULL) | |
3030 | name = h->root.root.string; | |
3031 | else | |
3032 | { | |
3033 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
3034 | if (name == NULL) | |
3035 | return false; | |
3036 | } | |
3037 | ||
3038 | if (! ((*info->callbacks->reloc_overflow) | |
3039 | (info, name, howto->name, (bfd_vma) 0, input_bfd, | |
3040 | input_section, rel->r_vaddr - input_section->vma))) | |
3041 | return false; | |
3042 | } | |
3043 | } | |
3044 | } | |
3045 | return true; | |
3046 | } |