Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* COFF specific linker code. |
eea6121a | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
f075ee0c | 3 | 2004, 2005 Free Software Foundation, Inc. |
252b5132 RH |
4 | Written by Ian Lance Taylor, Cygnus Support. |
5 | ||
8b956130 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
8b956130 NC |
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. | |
252b5132 | 12 | |
8b956130 NC |
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. | |
252b5132 | 17 | |
8b956130 NC |
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. */ | |
252b5132 RH |
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" | |
a3aa4448 | 30 | #include "safe-ctype.h" |
252b5132 | 31 | |
8b956130 NC |
32 | static bfd_boolean coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info); |
33 | static bfd_boolean coff_link_check_archive_element (bfd *abfd, struct bfd_link_info *info, bfd_boolean *pneeded); | |
34 | static bfd_boolean coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info); | |
252b5132 | 35 | |
b34976b6 | 36 | /* Return TRUE if SYM is a weak, external symbol. */ |
e4202681 NC |
37 | #define IS_WEAK_EXTERNAL(abfd, sym) \ |
38 | ((sym).n_sclass == C_WEAKEXT \ | |
39 | || (obj_pe (abfd) && (sym).n_sclass == C_NT_WEAK)) | |
40 | ||
b34976b6 | 41 | /* Return TRUE if SYM is an external symbol. */ |
e4202681 NC |
42 | #define IS_EXTERNAL(abfd, sym) \ |
43 | ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym)) | |
44 | ||
b2d638c7 ILT |
45 | /* Define macros so that the ISFCN, et. al., macros work correctly. |
46 | These macros are defined in include/coff/internal.h in terms of | |
47 | N_TMASK, etc. These definitions require a user to define local | |
48 | variables with the appropriate names, and with values from the | |
49 | coff_data (abfd) structure. */ | |
50 | ||
51 | #define N_TMASK n_tmask | |
52 | #define N_BTSHFT n_btshft | |
53 | #define N_BTMASK n_btmask | |
54 | ||
252b5132 RH |
55 | /* Create an entry in a COFF linker hash table. */ |
56 | ||
57 | struct bfd_hash_entry * | |
8b956130 NC |
58 | _bfd_coff_link_hash_newfunc (struct bfd_hash_entry *entry, |
59 | struct bfd_hash_table *table, | |
60 | const char *string) | |
252b5132 RH |
61 | { |
62 | struct coff_link_hash_entry *ret = (struct coff_link_hash_entry *) entry; | |
63 | ||
64 | /* Allocate the structure if it has not already been allocated by a | |
65 | subclass. */ | |
66 | if (ret == (struct coff_link_hash_entry *) NULL) | |
67 | ret = ((struct coff_link_hash_entry *) | |
68 | bfd_hash_allocate (table, sizeof (struct coff_link_hash_entry))); | |
69 | if (ret == (struct coff_link_hash_entry *) NULL) | |
70 | return (struct bfd_hash_entry *) ret; | |
71 | ||
72 | /* Call the allocation method of the superclass. */ | |
73 | ret = ((struct coff_link_hash_entry *) | |
74 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
75 | table, string)); | |
76 | if (ret != (struct coff_link_hash_entry *) NULL) | |
77 | { | |
78 | /* Set local fields. */ | |
79 | ret->indx = -1; | |
80 | ret->type = T_NULL; | |
81 | ret->class = C_NULL; | |
82 | ret->numaux = 0; | |
83 | ret->auxbfd = NULL; | |
84 | ret->aux = NULL; | |
85 | } | |
86 | ||
87 | return (struct bfd_hash_entry *) ret; | |
88 | } | |
89 | ||
90 | /* Initialize a COFF linker hash table. */ | |
91 | ||
b34976b6 | 92 | bfd_boolean |
8b956130 NC |
93 | _bfd_coff_link_hash_table_init (struct coff_link_hash_table *table, |
94 | bfd *abfd, | |
95 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
96 | struct bfd_hash_table *, | |
97 | const char *)) | |
252b5132 | 98 | { |
3722b82f | 99 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
252b5132 RH |
100 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc); |
101 | } | |
102 | ||
103 | /* Create a COFF linker hash table. */ | |
104 | ||
105 | struct bfd_link_hash_table * | |
8b956130 | 106 | _bfd_coff_link_hash_table_create (bfd *abfd) |
252b5132 RH |
107 | { |
108 | struct coff_link_hash_table *ret; | |
dc810e39 | 109 | bfd_size_type amt = sizeof (struct coff_link_hash_table); |
252b5132 | 110 | |
8b956130 | 111 | ret = bfd_malloc (amt); |
252b5132 RH |
112 | if (ret == NULL) |
113 | return NULL; | |
8b956130 | 114 | |
252b5132 RH |
115 | if (! _bfd_coff_link_hash_table_init (ret, abfd, |
116 | _bfd_coff_link_hash_newfunc)) | |
117 | { | |
e2d34d7d | 118 | free (ret); |
252b5132 RH |
119 | return (struct bfd_link_hash_table *) NULL; |
120 | } | |
121 | return &ret->root; | |
122 | } | |
123 | ||
124 | /* Create an entry in a COFF debug merge hash table. */ | |
125 | ||
126 | struct bfd_hash_entry * | |
8b956130 NC |
127 | _bfd_coff_debug_merge_hash_newfunc (struct bfd_hash_entry *entry, |
128 | struct bfd_hash_table *table, | |
129 | const char *string) | |
252b5132 RH |
130 | { |
131 | struct coff_debug_merge_hash_entry *ret = | |
132 | (struct coff_debug_merge_hash_entry *) entry; | |
133 | ||
134 | /* Allocate the structure if it has not already been allocated by a | |
135 | subclass. */ | |
136 | if (ret == (struct coff_debug_merge_hash_entry *) NULL) | |
137 | ret = ((struct coff_debug_merge_hash_entry *) | |
138 | bfd_hash_allocate (table, | |
139 | sizeof (struct coff_debug_merge_hash_entry))); | |
140 | if (ret == (struct coff_debug_merge_hash_entry *) NULL) | |
141 | return (struct bfd_hash_entry *) ret; | |
142 | ||
143 | /* Call the allocation method of the superclass. */ | |
144 | ret = ((struct coff_debug_merge_hash_entry *) | |
145 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
146 | if (ret != (struct coff_debug_merge_hash_entry *) NULL) | |
147 | { | |
148 | /* Set local fields. */ | |
149 | ret->types = NULL; | |
150 | } | |
151 | ||
152 | return (struct bfd_hash_entry *) ret; | |
153 | } | |
154 | ||
155 | /* Given a COFF BFD, add symbols to the global hash table as | |
156 | appropriate. */ | |
157 | ||
b34976b6 | 158 | bfd_boolean |
8b956130 | 159 | _bfd_coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
160 | { |
161 | switch (bfd_get_format (abfd)) | |
162 | { | |
163 | case bfd_object: | |
164 | return coff_link_add_object_symbols (abfd, info); | |
165 | case bfd_archive: | |
8b956130 NC |
166 | return _bfd_generic_link_add_archive_symbols |
167 | (abfd, info, coff_link_check_archive_element); | |
252b5132 RH |
168 | default: |
169 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 170 | return FALSE; |
252b5132 RH |
171 | } |
172 | } | |
173 | ||
174 | /* Add symbols from a COFF object file. */ | |
175 | ||
b34976b6 | 176 | static bfd_boolean |
8b956130 | 177 | coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
178 | { |
179 | if (! _bfd_coff_get_external_symbols (abfd)) | |
b34976b6 | 180 | return FALSE; |
252b5132 | 181 | if (! coff_link_add_symbols (abfd, info)) |
b34976b6 | 182 | return FALSE; |
252b5132 | 183 | |
8b956130 NC |
184 | if (! info->keep_memory |
185 | && ! _bfd_coff_free_symbols (abfd)) | |
b34976b6 | 186 | return FALSE; |
252b5132 | 187 | |
b34976b6 | 188 | return TRUE; |
252b5132 RH |
189 | } |
190 | ||
191 | /* Look through the symbols to see if this object file should be | |
192 | included in the link. */ | |
193 | ||
b34976b6 | 194 | static bfd_boolean |
8b956130 NC |
195 | coff_link_check_ar_symbols (bfd *abfd, |
196 | struct bfd_link_info *info, | |
197 | bfd_boolean *pneeded) | |
252b5132 | 198 | { |
252b5132 RH |
199 | bfd_size_type symesz; |
200 | bfd_byte *esym; | |
201 | bfd_byte *esym_end; | |
202 | ||
b34976b6 | 203 | *pneeded = FALSE; |
252b5132 | 204 | |
252b5132 RH |
205 | symesz = bfd_coff_symesz (abfd); |
206 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
207 | esym_end = esym + obj_raw_syment_count (abfd) * symesz; | |
208 | while (esym < esym_end) | |
209 | { | |
210 | struct internal_syment sym; | |
5d54c628 | 211 | enum coff_symbol_classification classification; |
252b5132 | 212 | |
8b956130 | 213 | bfd_coff_swap_sym_in (abfd, esym, &sym); |
252b5132 | 214 | |
5d54c628 ILT |
215 | classification = bfd_coff_classify_symbol (abfd, &sym); |
216 | if (classification == COFF_SYMBOL_GLOBAL | |
217 | || classification == COFF_SYMBOL_COMMON) | |
252b5132 RH |
218 | { |
219 | const char *name; | |
220 | char buf[SYMNMLEN + 1]; | |
221 | struct bfd_link_hash_entry *h; | |
222 | ||
223 | /* This symbol is externally visible, and is defined by this | |
224 | object file. */ | |
252b5132 RH |
225 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); |
226 | if (name == NULL) | |
b34976b6 AM |
227 | return FALSE; |
228 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
252b5132 | 229 | |
8b956130 NC |
230 | /* Auto import. */ |
231 | if (!h | |
232 | && info->pei386_auto_import | |
233 | && !strncmp (name,"__imp_", 6)) | |
234 | h = bfd_link_hash_lookup (info->hash, name + 6, FALSE, FALSE, TRUE); | |
235 | ||
252b5132 RH |
236 | /* We are only interested in symbols that are currently |
237 | undefined. If a symbol is currently known to be common, | |
238 | COFF linkers do not bring in an object file which defines | |
239 | it. */ | |
240 | if (h != (struct bfd_link_hash_entry *) NULL | |
241 | && h->type == bfd_link_hash_undefined) | |
242 | { | |
243 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
b34976b6 AM |
244 | return FALSE; |
245 | *pneeded = TRUE; | |
246 | return TRUE; | |
252b5132 RH |
247 | } |
248 | } | |
249 | ||
250 | esym += (sym.n_numaux + 1) * symesz; | |
251 | } | |
252 | ||
253 | /* We do not need this object file. */ | |
b34976b6 | 254 | return TRUE; |
252b5132 RH |
255 | } |
256 | ||
8b956130 NC |
257 | /* Check a single archive element to see if we need to include it in |
258 | the link. *PNEEDED is set according to whether this element is | |
259 | needed in the link or not. This is called via | |
260 | _bfd_generic_link_add_archive_symbols. */ | |
261 | ||
262 | static bfd_boolean | |
263 | coff_link_check_archive_element (bfd *abfd, | |
264 | struct bfd_link_info *info, | |
265 | bfd_boolean *pneeded) | |
266 | { | |
267 | if (! _bfd_coff_get_external_symbols (abfd)) | |
268 | return FALSE; | |
269 | ||
270 | if (! coff_link_check_ar_symbols (abfd, info, pneeded)) | |
271 | return FALSE; | |
272 | ||
273 | if (*pneeded | |
274 | && ! coff_link_add_symbols (abfd, info)) | |
275 | return FALSE; | |
276 | ||
277 | if ((! info->keep_memory || ! *pneeded) | |
278 | && ! _bfd_coff_free_symbols (abfd)) | |
279 | return FALSE; | |
280 | ||
281 | return TRUE; | |
282 | } | |
283 | ||
252b5132 RH |
284 | /* Add all the symbols from an object file to the hash table. */ |
285 | ||
b34976b6 | 286 | static bfd_boolean |
8b956130 NC |
287 | coff_link_add_symbols (bfd *abfd, |
288 | struct bfd_link_info *info) | |
252b5132 | 289 | { |
b2d638c7 ILT |
290 | unsigned int n_tmask = coff_data (abfd)->local_n_tmask; |
291 | unsigned int n_btshft = coff_data (abfd)->local_n_btshft; | |
292 | unsigned int n_btmask = coff_data (abfd)->local_n_btmask; | |
b34976b6 AM |
293 | bfd_boolean keep_syms; |
294 | bfd_boolean default_copy; | |
252b5132 RH |
295 | bfd_size_type symcount; |
296 | struct coff_link_hash_entry **sym_hash; | |
297 | bfd_size_type symesz; | |
298 | bfd_byte *esym; | |
299 | bfd_byte *esym_end; | |
dc810e39 | 300 | bfd_size_type amt; |
252b5132 RH |
301 | |
302 | /* Keep the symbols during this function, in case the linker needs | |
303 | to read the generic symbols in order to report an error message. */ | |
304 | keep_syms = obj_coff_keep_syms (abfd); | |
b34976b6 | 305 | obj_coff_keep_syms (abfd) = TRUE; |
252b5132 | 306 | |
252b5132 | 307 | if (info->keep_memory) |
b34976b6 | 308 | default_copy = FALSE; |
252b5132 | 309 | else |
b34976b6 | 310 | default_copy = TRUE; |
252b5132 RH |
311 | |
312 | symcount = obj_raw_syment_count (abfd); | |
313 | ||
314 | /* We keep a list of the linker hash table entries that correspond | |
315 | to particular symbols. */ | |
dc810e39 | 316 | amt = symcount * sizeof (struct coff_link_hash_entry *); |
8b956130 | 317 | sym_hash = bfd_zalloc (abfd, amt); |
252b5132 RH |
318 | if (sym_hash == NULL && symcount != 0) |
319 | goto error_return; | |
320 | obj_coff_sym_hashes (abfd) = sym_hash; | |
252b5132 RH |
321 | |
322 | symesz = bfd_coff_symesz (abfd); | |
323 | BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); | |
324 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
325 | esym_end = esym + symcount * symesz; | |
326 | while (esym < esym_end) | |
327 | { | |
328 | struct internal_syment sym; | |
5d54c628 | 329 | enum coff_symbol_classification classification; |
b34976b6 | 330 | bfd_boolean copy; |
252b5132 | 331 | |
8b956130 | 332 | bfd_coff_swap_sym_in (abfd, esym, &sym); |
252b5132 | 333 | |
5d54c628 ILT |
334 | classification = bfd_coff_classify_symbol (abfd, &sym); |
335 | if (classification != COFF_SYMBOL_LOCAL) | |
252b5132 RH |
336 | { |
337 | const char *name; | |
338 | char buf[SYMNMLEN + 1]; | |
339 | flagword flags; | |
340 | asection *section; | |
341 | bfd_vma value; | |
b34976b6 | 342 | bfd_boolean addit; |
252b5132 RH |
343 | |
344 | /* This symbol is externally visible. */ | |
345 | ||
346 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
347 | if (name == NULL) | |
348 | goto error_return; | |
349 | ||
350 | /* We must copy the name into memory if we got it from the | |
351 | syment itself, rather than the string table. */ | |
352 | copy = default_copy; | |
353 | if (sym._n._n_n._n_zeroes != 0 | |
354 | || sym._n._n_n._n_offset == 0) | |
b34976b6 | 355 | copy = TRUE; |
252b5132 RH |
356 | |
357 | value = sym.n_value; | |
358 | ||
5d54c628 | 359 | switch (classification) |
252b5132 | 360 | { |
5d54c628 ILT |
361 | default: |
362 | abort (); | |
363 | ||
364 | case COFF_SYMBOL_GLOBAL: | |
252b5132 RH |
365 | flags = BSF_EXPORT | BSF_GLOBAL; |
366 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
367 | if (! obj_pe (abfd)) | |
368 | value -= section->vma; | |
5d54c628 ILT |
369 | break; |
370 | ||
371 | case COFF_SYMBOL_UNDEFINED: | |
372 | flags = 0; | |
373 | section = bfd_und_section_ptr; | |
374 | break; | |
375 | ||
376 | case COFF_SYMBOL_COMMON: | |
377 | flags = BSF_GLOBAL; | |
378 | section = bfd_com_section_ptr; | |
379 | break; | |
380 | ||
381 | case COFF_SYMBOL_PE_SECTION: | |
382 | flags = BSF_SECTION_SYM | BSF_GLOBAL; | |
383 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
384 | break; | |
252b5132 RH |
385 | } |
386 | ||
e4202681 | 387 | if (IS_WEAK_EXTERNAL (abfd, sym)) |
252b5132 RH |
388 | flags = BSF_WEAK; |
389 | ||
b34976b6 | 390 | addit = TRUE; |
7fd9c191 ILT |
391 | |
392 | /* In the PE format, section symbols actually refer to the | |
393 | start of the output section. We handle them specially | |
394 | here. */ | |
395 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) | |
396 | { | |
397 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
b34976b6 | 398 | name, FALSE, copy, FALSE); |
7fd9c191 ILT |
399 | if (*sym_hash != NULL) |
400 | { | |
401 | if (((*sym_hash)->coff_link_hash_flags | |
402 | & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0 | |
403 | && (*sym_hash)->root.type != bfd_link_hash_undefined | |
404 | && (*sym_hash)->root.type != bfd_link_hash_undefweak) | |
405 | (*_bfd_error_handler) | |
406 | ("Warning: symbol `%s' is both section and non-section", | |
407 | name); | |
408 | ||
b34976b6 | 409 | addit = FALSE; |
7fd9c191 ILT |
410 | } |
411 | } | |
412 | ||
49147fca ILT |
413 | /* The Microsoft Visual C compiler does string pooling by |
414 | hashing the constants to an internal symbol name, and | |
08da05b0 | 415 | relying on the linker comdat support to discard |
49147fca ILT |
416 | duplicate names. However, if one string is a literal and |
417 | one is a data initializer, one will end up in the .data | |
418 | section and one will end up in the .rdata section. The | |
419 | Microsoft linker will combine them into the .data | |
420 | section, which seems to be wrong since it might cause the | |
421 | literal to change. | |
422 | ||
423 | As long as there are no external references to the | |
424 | symbols, which there shouldn't be, we can treat the .data | |
425 | and .rdata instances as separate symbols. The comdat | |
426 | code in the linker will do the appropriate merging. Here | |
427 | we avoid getting a multiple definition error for one of | |
428 | these special symbols. | |
429 | ||
430 | FIXME: I don't think this will work in the case where | |
431 | there are two object files which use the constants as a | |
432 | literal and two object files which use it as a data | |
433 | initializer. One or the other of the second object files | |
434 | is going to wind up with an inappropriate reference. */ | |
435 | if (obj_pe (abfd) | |
436 | && (classification == COFF_SYMBOL_GLOBAL | |
437 | || classification == COFF_SYMBOL_PE_SECTION) | |
271d0fc3 | 438 | && coff_section_data (abfd, section) != NULL |
082b7297 | 439 | && coff_section_data (abfd, section)->comdat != NULL |
49147fca | 440 | && strncmp (name, "??_", 3) == 0 |
082b7297 | 441 | && strcmp (name, coff_section_data (abfd, section)->comdat->name) == 0) |
49147fca ILT |
442 | { |
443 | if (*sym_hash == NULL) | |
444 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
b34976b6 | 445 | name, FALSE, copy, FALSE); |
49147fca ILT |
446 | if (*sym_hash != NULL |
447 | && (*sym_hash)->root.type == bfd_link_hash_defined | |
082b7297 L |
448 | && coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat != NULL |
449 | && strcmp (coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat->name, | |
450 | coff_section_data (abfd, section)->comdat->name) == 0) | |
b34976b6 | 451 | addit = FALSE; |
49147fca ILT |
452 | } |
453 | ||
7fd9c191 ILT |
454 | if (addit) |
455 | { | |
456 | if (! (bfd_coff_link_add_one_symbol | |
457 | (info, abfd, name, flags, section, value, | |
b34976b6 | 458 | (const char *) NULL, copy, FALSE, |
7fd9c191 ILT |
459 | (struct bfd_link_hash_entry **) sym_hash))) |
460 | goto error_return; | |
461 | } | |
462 | ||
463 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) | |
464 | (*sym_hash)->coff_link_hash_flags |= | |
465 | COFF_LINK_HASH_PE_SECTION_SYMBOL; | |
252b5132 | 466 | |
2820a0b7 ILT |
467 | /* Limit the alignment of a common symbol to the possible |
468 | alignment of a section. There is no point to permitting | |
469 | a higher alignment for a common symbol: we can not | |
470 | guarantee it, and it may cause us to allocate extra space | |
471 | in the common section. */ | |
252b5132 RH |
472 | if (section == bfd_com_section_ptr |
473 | && (*sym_hash)->root.type == bfd_link_hash_common | |
474 | && ((*sym_hash)->root.u.c.p->alignment_power | |
475 | > bfd_coff_default_section_alignment_power (abfd))) | |
476 | (*sym_hash)->root.u.c.p->alignment_power | |
477 | = bfd_coff_default_section_alignment_power (abfd); | |
478 | ||
479 | if (info->hash->creator->flavour == bfd_get_flavour (abfd)) | |
480 | { | |
5d3aaa74 ILT |
481 | /* If we don't have any symbol information currently in |
482 | the hash table, or if we are looking at a symbol | |
483 | definition, then update the symbol class and type in | |
484 | the hash table. */ | |
485 | if (((*sym_hash)->class == C_NULL | |
486 | && (*sym_hash)->type == T_NULL) | |
487 | || sym.n_scnum != 0 | |
488 | || (sym.n_value != 0 | |
489 | && (*sym_hash)->root.type != bfd_link_hash_defined | |
490 | && (*sym_hash)->root.type != bfd_link_hash_defweak)) | |
491 | { | |
492 | (*sym_hash)->class = sym.n_sclass; | |
493 | if (sym.n_type != T_NULL) | |
494 | { | |
495 | /* We want to warn if the type changed, but not | |
496 | if it changed from an unspecified type. | |
497 | Testing the whole type byte may work, but the | |
498 | change from (e.g.) a function of unspecified | |
499 | type to function of known type also wants to | |
500 | skip the warning. */ | |
501 | if ((*sym_hash)->type != T_NULL | |
502 | && (*sym_hash)->type != sym.n_type | |
503 | && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type) | |
504 | && (BTYPE ((*sym_hash)->type) == T_NULL | |
505 | || BTYPE (sym.n_type) == T_NULL))) | |
506 | (*_bfd_error_handler) | |
d003868e AM |
507 | (_("Warning: type of symbol `%s' changed from %d to %d in %B"), |
508 | abfd, name, (*sym_hash)->type, sym.n_type); | |
5d3aaa74 ILT |
509 | |
510 | /* We don't want to change from a meaningful | |
511 | base type to a null one, but if we know | |
512 | nothing, take what little we might now know. */ | |
513 | if (BTYPE (sym.n_type) != T_NULL | |
514 | || (*sym_hash)->type == T_NULL) | |
515 | (*sym_hash)->type = sym.n_type; | |
516 | } | |
517 | (*sym_hash)->auxbfd = abfd; | |
252b5132 RH |
518 | if (sym.n_numaux != 0) |
519 | { | |
520 | union internal_auxent *alloc; | |
521 | unsigned int i; | |
522 | bfd_byte *eaux; | |
523 | union internal_auxent *iaux; | |
524 | ||
525 | (*sym_hash)->numaux = sym.n_numaux; | |
526 | alloc = ((union internal_auxent *) | |
527 | bfd_hash_allocate (&info->hash->table, | |
528 | (sym.n_numaux | |
529 | * sizeof (*alloc)))); | |
530 | if (alloc == NULL) | |
531 | goto error_return; | |
532 | for (i = 0, eaux = esym + symesz, iaux = alloc; | |
533 | i < sym.n_numaux; | |
534 | i++, eaux += symesz, iaux++) | |
8b956130 | 535 | bfd_coff_swap_aux_in (abfd, eaux, sym.n_type, |
dc810e39 | 536 | sym.n_sclass, (int) i, |
8b956130 | 537 | sym.n_numaux, iaux); |
252b5132 RH |
538 | (*sym_hash)->aux = alloc; |
539 | } | |
540 | } | |
541 | } | |
5d54c628 ILT |
542 | |
543 | if (classification == COFF_SYMBOL_PE_SECTION | |
544 | && (*sym_hash)->numaux != 0) | |
545 | { | |
546 | /* Some PE sections (such as .bss) have a zero size in | |
547 | the section header, but a non-zero size in the AUX | |
548 | record. Correct that here. | |
549 | ||
550 | FIXME: This is not at all the right place to do this. | |
551 | For example, it won't help objdump. This needs to be | |
552 | done when we swap in the section header. */ | |
5d54c628 | 553 | BFD_ASSERT ((*sym_hash)->numaux == 1); |
eea6121a AM |
554 | if (section->size == 0) |
555 | section->size = (*sym_hash)->aux[0].x_scn.x_scnlen; | |
5d54c628 ILT |
556 | |
557 | /* FIXME: We could test whether the section sizes | |
558 | matches the size in the aux entry, but apparently | |
559 | that sometimes fails unexpectedly. */ | |
560 | } | |
252b5132 RH |
561 | } |
562 | ||
563 | esym += (sym.n_numaux + 1) * symesz; | |
564 | sym_hash += sym.n_numaux + 1; | |
565 | } | |
566 | ||
1049f94e | 567 | /* If this is a non-traditional, non-relocatable link, try to |
252b5132 | 568 | optimize the handling of any .stab/.stabstr sections. */ |
1049f94e | 569 | if (! info->relocatable |
252b5132 RH |
570 | && ! info->traditional_format |
571 | && info->hash->creator->flavour == bfd_get_flavour (abfd) | |
572 | && (info->strip != strip_all && info->strip != strip_debugger)) | |
573 | { | |
29ca8dc5 | 574 | asection *stabstr; |
252b5132 | 575 | |
29ca8dc5 | 576 | stabstr = bfd_get_section_by_name (abfd, ".stabstr"); |
252b5132 | 577 | |
29ca8dc5 NS |
578 | if (stabstr != NULL) |
579 | { | |
580 | bfd_size_type string_offset = 0; | |
581 | asection *stab; | |
582 | ||
583 | for (stab = abfd->sections; stab; stab = stab->next) | |
584 | if (strncmp (".stab", stab->name, 5) == 0 | |
585 | && (!stab->name[5] | |
a3aa4448 | 586 | || (stab->name[5] == '.' && ISDIGIT (stab->name[6])))) |
252b5132 RH |
587 | { |
588 | struct coff_link_hash_table *table; | |
29ca8dc5 NS |
589 | struct coff_section_tdata *secdata |
590 | = coff_section_data (abfd, stab); | |
591 | ||
252b5132 RH |
592 | if (secdata == NULL) |
593 | { | |
dc810e39 | 594 | amt = sizeof (struct coff_section_tdata); |
8b956130 | 595 | stab->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
596 | if (stab->used_by_bfd == NULL) |
597 | goto error_return; | |
598 | secdata = coff_section_data (abfd, stab); | |
599 | } | |
600 | ||
601 | table = coff_hash_table (info); | |
602 | ||
603 | if (! _bfd_link_section_stabs (abfd, &table->stab_info, | |
604 | stab, stabstr, | |
29ca8dc5 NS |
605 | &secdata->stab_info, |
606 | &string_offset)) | |
252b5132 RH |
607 | goto error_return; |
608 | } | |
609 | } | |
610 | } | |
611 | ||
612 | obj_coff_keep_syms (abfd) = keep_syms; | |
613 | ||
b34976b6 | 614 | return TRUE; |
252b5132 RH |
615 | |
616 | error_return: | |
617 | obj_coff_keep_syms (abfd) = keep_syms; | |
b34976b6 | 618 | return FALSE; |
252b5132 RH |
619 | } |
620 | \f | |
621 | /* Do the final link step. */ | |
622 | ||
b34976b6 | 623 | bfd_boolean |
8b956130 NC |
624 | _bfd_coff_final_link (bfd *abfd, |
625 | struct bfd_link_info *info) | |
252b5132 RH |
626 | { |
627 | bfd_size_type symesz; | |
628 | struct coff_final_link_info finfo; | |
b34976b6 AM |
629 | bfd_boolean debug_merge_allocated; |
630 | bfd_boolean long_section_names; | |
252b5132 RH |
631 | asection *o; |
632 | struct bfd_link_order *p; | |
dc810e39 AM |
633 | bfd_size_type max_sym_count; |
634 | bfd_size_type max_lineno_count; | |
635 | bfd_size_type max_reloc_count; | |
636 | bfd_size_type max_output_reloc_count; | |
637 | bfd_size_type max_contents_size; | |
252b5132 RH |
638 | file_ptr rel_filepos; |
639 | unsigned int relsz; | |
640 | file_ptr line_filepos; | |
641 | unsigned int linesz; | |
642 | bfd *sub; | |
643 | bfd_byte *external_relocs = NULL; | |
644 | char strbuf[STRING_SIZE_SIZE]; | |
dc810e39 | 645 | bfd_size_type amt; |
252b5132 RH |
646 | |
647 | symesz = bfd_coff_symesz (abfd); | |
648 | ||
649 | finfo.info = info; | |
650 | finfo.output_bfd = abfd; | |
651 | finfo.strtab = NULL; | |
652 | finfo.section_info = NULL; | |
653 | finfo.last_file_index = -1; | |
654 | finfo.last_bf_index = -1; | |
655 | finfo.internal_syms = NULL; | |
656 | finfo.sec_ptrs = NULL; | |
657 | finfo.sym_indices = NULL; | |
658 | finfo.outsyms = NULL; | |
659 | finfo.linenos = NULL; | |
660 | finfo.contents = NULL; | |
661 | finfo.external_relocs = NULL; | |
662 | finfo.internal_relocs = NULL; | |
b34976b6 AM |
663 | finfo.global_to_static = FALSE; |
664 | debug_merge_allocated = FALSE; | |
252b5132 RH |
665 | |
666 | coff_data (abfd)->link_info = info; | |
667 | ||
668 | finfo.strtab = _bfd_stringtab_init (); | |
669 | if (finfo.strtab == NULL) | |
670 | goto error_return; | |
671 | ||
672 | if (! coff_debug_merge_hash_table_init (&finfo.debug_merge)) | |
673 | goto error_return; | |
b34976b6 | 674 | debug_merge_allocated = TRUE; |
252b5132 RH |
675 | |
676 | /* Compute the file positions for all the sections. */ | |
677 | if (! abfd->output_has_begun) | |
678 | { | |
679 | if (! bfd_coff_compute_section_file_positions (abfd)) | |
680 | goto error_return; | |
681 | } | |
682 | ||
683 | /* Count the line numbers and relocation entries required for the | |
684 | output file. Set the file positions for the relocs. */ | |
685 | rel_filepos = obj_relocbase (abfd); | |
686 | relsz = bfd_coff_relsz (abfd); | |
687 | max_contents_size = 0; | |
688 | max_lineno_count = 0; | |
689 | max_reloc_count = 0; | |
690 | ||
b34976b6 | 691 | long_section_names = FALSE; |
252b5132 RH |
692 | for (o = abfd->sections; o != NULL; o = o->next) |
693 | { | |
694 | o->reloc_count = 0; | |
695 | o->lineno_count = 0; | |
696 | for (p = o->link_order_head; p != NULL; p = p->next) | |
697 | { | |
698 | if (p->type == bfd_indirect_link_order) | |
699 | { | |
700 | asection *sec; | |
701 | ||
702 | sec = p->u.indirect.section; | |
703 | ||
704 | /* Mark all sections which are to be included in the | |
705 | link. This will normally be every section. We need | |
706 | to do this so that we can identify any sections which | |
707 | the linker has decided to not include. */ | |
b34976b6 | 708 | sec->linker_mark = TRUE; |
252b5132 RH |
709 | |
710 | if (info->strip == strip_none | |
711 | || info->strip == strip_some) | |
712 | o->lineno_count += sec->lineno_count; | |
713 | ||
1049f94e | 714 | if (info->relocatable) |
252b5132 RH |
715 | o->reloc_count += sec->reloc_count; |
716 | ||
eea6121a AM |
717 | if (sec->rawsize > max_contents_size) |
718 | max_contents_size = sec->rawsize; | |
719 | if (sec->size > max_contents_size) | |
720 | max_contents_size = sec->size; | |
252b5132 RH |
721 | if (sec->lineno_count > max_lineno_count) |
722 | max_lineno_count = sec->lineno_count; | |
723 | if (sec->reloc_count > max_reloc_count) | |
724 | max_reloc_count = sec->reloc_count; | |
725 | } | |
1049f94e | 726 | else if (info->relocatable |
252b5132 RH |
727 | && (p->type == bfd_section_reloc_link_order |
728 | || p->type == bfd_symbol_reloc_link_order)) | |
729 | ++o->reloc_count; | |
730 | } | |
731 | if (o->reloc_count == 0) | |
732 | o->rel_filepos = 0; | |
733 | else | |
734 | { | |
735 | o->flags |= SEC_RELOC; | |
736 | o->rel_filepos = rel_filepos; | |
737 | rel_filepos += o->reloc_count * relsz; | |
e9168c1e MM |
738 | /* In PE COFF, if there are at least 0xffff relocations an |
739 | extra relocation will be written out to encode the count. */ | |
740 | if (obj_pe (abfd) && o->reloc_count >= 0xffff) | |
741 | rel_filepos += relsz; | |
252b5132 RH |
742 | } |
743 | ||
744 | if (bfd_coff_long_section_names (abfd) | |
745 | && strlen (o->name) > SCNNMLEN) | |
746 | { | |
747 | /* This section has a long name which must go in the string | |
748 | table. This must correspond to the code in | |
749 | coff_write_object_contents which puts the string index | |
750 | into the s_name field of the section header. That is why | |
b34976b6 AM |
751 | we pass hash as FALSE. */ |
752 | if (_bfd_stringtab_add (finfo.strtab, o->name, FALSE, FALSE) | |
252b5132 RH |
753 | == (bfd_size_type) -1) |
754 | goto error_return; | |
b34976b6 | 755 | long_section_names = TRUE; |
252b5132 RH |
756 | } |
757 | } | |
758 | ||
1049f94e | 759 | /* If doing a relocatable link, allocate space for the pointers we |
252b5132 | 760 | need to keep. */ |
1049f94e | 761 | if (info->relocatable) |
252b5132 RH |
762 | { |
763 | unsigned int i; | |
764 | ||
765 | /* We use section_count + 1, rather than section_count, because | |
766 | the target_index fields are 1 based. */ | |
dc810e39 AM |
767 | amt = abfd->section_count + 1; |
768 | amt *= sizeof (struct coff_link_section_info); | |
8b956130 | 769 | finfo.section_info = bfd_malloc (amt); |
252b5132 RH |
770 | if (finfo.section_info == NULL) |
771 | goto error_return; | |
772 | for (i = 0; i <= abfd->section_count; i++) | |
773 | { | |
774 | finfo.section_info[i].relocs = NULL; | |
775 | finfo.section_info[i].rel_hashes = NULL; | |
776 | } | |
777 | } | |
778 | ||
779 | /* We now know the size of the relocs, so we can determine the file | |
780 | positions of the line numbers. */ | |
781 | line_filepos = rel_filepos; | |
782 | linesz = bfd_coff_linesz (abfd); | |
783 | max_output_reloc_count = 0; | |
784 | for (o = abfd->sections; o != NULL; o = o->next) | |
785 | { | |
786 | if (o->lineno_count == 0) | |
787 | o->line_filepos = 0; | |
788 | else | |
789 | { | |
790 | o->line_filepos = line_filepos; | |
791 | line_filepos += o->lineno_count * linesz; | |
792 | } | |
793 | ||
794 | if (o->reloc_count != 0) | |
795 | { | |
796 | /* We don't know the indices of global symbols until we have | |
797 | written out all the local symbols. For each section in | |
798 | the output file, we keep an array of pointers to hash | |
799 | table entries. Each entry in the array corresponds to a | |
800 | reloc. When we find a reloc against a global symbol, we | |
801 | set the corresponding entry in this array so that we can | |
802 | fix up the symbol index after we have written out all the | |
803 | local symbols. | |
804 | ||
805 | Because of this problem, we also keep the relocs in | |
806 | memory until the end of the link. This wastes memory, | |
1049f94e | 807 | but only when doing a relocatable link, which is not the |
252b5132 | 808 | common case. */ |
1049f94e | 809 | BFD_ASSERT (info->relocatable); |
dc810e39 AM |
810 | amt = o->reloc_count; |
811 | amt *= sizeof (struct internal_reloc); | |
8b956130 | 812 | finfo.section_info[o->target_index].relocs = bfd_malloc (amt); |
dc810e39 AM |
813 | amt = o->reloc_count; |
814 | amt *= sizeof (struct coff_link_hash_entry *); | |
8b956130 | 815 | finfo.section_info[o->target_index].rel_hashes = bfd_malloc (amt); |
252b5132 RH |
816 | if (finfo.section_info[o->target_index].relocs == NULL |
817 | || finfo.section_info[o->target_index].rel_hashes == NULL) | |
818 | goto error_return; | |
819 | ||
820 | if (o->reloc_count > max_output_reloc_count) | |
821 | max_output_reloc_count = o->reloc_count; | |
822 | } | |
823 | ||
824 | /* Reset the reloc and lineno counts, so that we can use them to | |
825 | count the number of entries we have output so far. */ | |
826 | o->reloc_count = 0; | |
827 | o->lineno_count = 0; | |
828 | } | |
829 | ||
830 | obj_sym_filepos (abfd) = line_filepos; | |
831 | ||
832 | /* Figure out the largest number of symbols in an input BFD. Take | |
833 | the opportunity to clear the output_has_begun fields of all the | |
834 | input BFD's. */ | |
835 | max_sym_count = 0; | |
836 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
837 | { | |
838 | size_t sz; | |
839 | ||
b34976b6 | 840 | sub->output_has_begun = FALSE; |
252b5132 RH |
841 | sz = obj_raw_syment_count (sub); |
842 | if (sz > max_sym_count) | |
843 | max_sym_count = sz; | |
844 | } | |
845 | ||
846 | /* Allocate some buffers used while linking. */ | |
dc810e39 | 847 | amt = max_sym_count * sizeof (struct internal_syment); |
8b956130 | 848 | finfo.internal_syms = bfd_malloc (amt); |
dc810e39 | 849 | amt = max_sym_count * sizeof (asection *); |
8b956130 | 850 | finfo.sec_ptrs = bfd_malloc (amt); |
dc810e39 | 851 | amt = max_sym_count * sizeof (long); |
8b956130 NC |
852 | finfo.sym_indices = bfd_malloc (amt); |
853 | finfo.outsyms = bfd_malloc ((max_sym_count + 1) * symesz); | |
dc810e39 | 854 | amt = max_lineno_count * bfd_coff_linesz (abfd); |
8b956130 NC |
855 | finfo.linenos = bfd_malloc (amt); |
856 | finfo.contents = bfd_malloc (max_contents_size); | |
dc810e39 | 857 | amt = max_reloc_count * relsz; |
8b956130 | 858 | finfo.external_relocs = bfd_malloc (amt); |
1049f94e | 859 | if (! info->relocatable) |
dc810e39 AM |
860 | { |
861 | amt = max_reloc_count * sizeof (struct internal_reloc); | |
8b956130 | 862 | finfo.internal_relocs = bfd_malloc (amt); |
dc810e39 | 863 | } |
252b5132 RH |
864 | if ((finfo.internal_syms == NULL && max_sym_count > 0) |
865 | || (finfo.sec_ptrs == NULL && max_sym_count > 0) | |
866 | || (finfo.sym_indices == NULL && max_sym_count > 0) | |
867 | || finfo.outsyms == NULL | |
868 | || (finfo.linenos == NULL && max_lineno_count > 0) | |
869 | || (finfo.contents == NULL && max_contents_size > 0) | |
870 | || (finfo.external_relocs == NULL && max_reloc_count > 0) | |
1049f94e | 871 | || (! info->relocatable |
252b5132 RH |
872 | && finfo.internal_relocs == NULL |
873 | && max_reloc_count > 0)) | |
874 | goto error_return; | |
875 | ||
876 | /* We now know the position of everything in the file, except that | |
877 | we don't know the size of the symbol table and therefore we don't | |
878 | know where the string table starts. We just build the string | |
879 | table in memory as we go along. We process all the relocations | |
880 | for a single input file at once. */ | |
881 | obj_raw_syment_count (abfd) = 0; | |
882 | ||
883 | if (coff_backend_info (abfd)->_bfd_coff_start_final_link) | |
884 | { | |
885 | if (! bfd_coff_start_final_link (abfd, info)) | |
886 | goto error_return; | |
887 | } | |
888 | ||
889 | for (o = abfd->sections; o != NULL; o = o->next) | |
890 | { | |
891 | for (p = o->link_order_head; p != NULL; p = p->next) | |
892 | { | |
893 | if (p->type == bfd_indirect_link_order | |
9bd09e22 | 894 | && bfd_family_coff (p->u.indirect.section->owner)) |
252b5132 RH |
895 | { |
896 | sub = p->u.indirect.section->owner; | |
897 | if (! bfd_coff_link_output_has_begun (sub, & finfo)) | |
898 | { | |
899 | if (! _bfd_coff_link_input_bfd (&finfo, sub)) | |
900 | goto error_return; | |
b34976b6 | 901 | sub->output_has_begun = TRUE; |
252b5132 RH |
902 | } |
903 | } | |
904 | else if (p->type == bfd_section_reloc_link_order | |
905 | || p->type == bfd_symbol_reloc_link_order) | |
906 | { | |
907 | if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p)) | |
908 | goto error_return; | |
909 | } | |
910 | else | |
911 | { | |
912 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
913 | goto error_return; | |
914 | } | |
915 | } | |
916 | } | |
917 | ||
918 | if (! bfd_coff_final_link_postscript (abfd, & finfo)) | |
919 | goto error_return; | |
244148ad | 920 | |
252b5132 RH |
921 | /* Free up the buffers used by _bfd_coff_link_input_bfd. */ |
922 | ||
923 | coff_debug_merge_hash_table_free (&finfo.debug_merge); | |
b34976b6 | 924 | debug_merge_allocated = FALSE; |
252b5132 RH |
925 | |
926 | if (finfo.internal_syms != NULL) | |
927 | { | |
928 | free (finfo.internal_syms); | |
929 | finfo.internal_syms = NULL; | |
930 | } | |
931 | if (finfo.sec_ptrs != NULL) | |
932 | { | |
933 | free (finfo.sec_ptrs); | |
934 | finfo.sec_ptrs = NULL; | |
935 | } | |
936 | if (finfo.sym_indices != NULL) | |
937 | { | |
938 | free (finfo.sym_indices); | |
939 | finfo.sym_indices = NULL; | |
940 | } | |
941 | if (finfo.linenos != NULL) | |
942 | { | |
943 | free (finfo.linenos); | |
944 | finfo.linenos = NULL; | |
945 | } | |
946 | if (finfo.contents != NULL) | |
947 | { | |
948 | free (finfo.contents); | |
949 | finfo.contents = NULL; | |
950 | } | |
951 | if (finfo.external_relocs != NULL) | |
952 | { | |
953 | free (finfo.external_relocs); | |
954 | finfo.external_relocs = NULL; | |
955 | } | |
956 | if (finfo.internal_relocs != NULL) | |
957 | { | |
958 | free (finfo.internal_relocs); | |
959 | finfo.internal_relocs = NULL; | |
960 | } | |
961 | ||
962 | /* The value of the last C_FILE symbol is supposed to be the symbol | |
963 | index of the first external symbol. Write it out again if | |
964 | necessary. */ | |
965 | if (finfo.last_file_index != -1 | |
966 | && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd)) | |
967 | { | |
dc810e39 AM |
968 | file_ptr pos; |
969 | ||
252b5132 | 970 | finfo.last_file.n_value = obj_raw_syment_count (abfd); |
8b956130 NC |
971 | bfd_coff_swap_sym_out (abfd, &finfo.last_file, |
972 | finfo.outsyms); | |
dc810e39 AM |
973 | |
974 | pos = obj_sym_filepos (abfd) + finfo.last_file_index * symesz; | |
975 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
976 | || bfd_bwrite (finfo.outsyms, symesz, abfd) != symesz) | |
b34976b6 | 977 | return FALSE; |
252b5132 RH |
978 | } |
979 | ||
980 | /* If doing task linking (ld --task-link) then make a pass through the | |
981 | global symbols, writing out any that are defined, and making them | |
244148ad | 982 | static. */ |
252b5132 RH |
983 | if (info->task_link) |
984 | { | |
b34976b6 | 985 | finfo.failed = FALSE; |
e92d460e | 986 | coff_link_hash_traverse (coff_hash_table (info), |
8b956130 | 987 | _bfd_coff_write_task_globals, &finfo); |
252b5132 RH |
988 | if (finfo.failed) |
989 | goto error_return; | |
990 | } | |
991 | ||
992 | /* Write out the global symbols. */ | |
b34976b6 | 993 | finfo.failed = FALSE; |
e92d460e | 994 | coff_link_hash_traverse (coff_hash_table (info), |
8b956130 | 995 | _bfd_coff_write_global_sym, &finfo); |
252b5132 RH |
996 | if (finfo.failed) |
997 | goto error_return; | |
998 | ||
999 | /* The outsyms buffer is used by _bfd_coff_write_global_sym. */ | |
1000 | if (finfo.outsyms != NULL) | |
1001 | { | |
1002 | free (finfo.outsyms); | |
1003 | finfo.outsyms = NULL; | |
1004 | } | |
1005 | ||
1049f94e | 1006 | if (info->relocatable && max_output_reloc_count > 0) |
252b5132 RH |
1007 | { |
1008 | /* Now that we have written out all the global symbols, we know | |
1009 | the symbol indices to use for relocs against them, and we can | |
1010 | finally write out the relocs. */ | |
dc810e39 | 1011 | amt = max_output_reloc_count * relsz; |
8b956130 | 1012 | external_relocs = bfd_malloc (amt); |
252b5132 RH |
1013 | if (external_relocs == NULL) |
1014 | goto error_return; | |
1015 | ||
1016 | for (o = abfd->sections; o != NULL; o = o->next) | |
1017 | { | |
1018 | struct internal_reloc *irel; | |
1019 | struct internal_reloc *irelend; | |
1020 | struct coff_link_hash_entry **rel_hash; | |
1021 | bfd_byte *erel; | |
1022 | ||
1023 | if (o->reloc_count == 0) | |
1024 | continue; | |
1025 | ||
1026 | irel = finfo.section_info[o->target_index].relocs; | |
1027 | irelend = irel + o->reloc_count; | |
1028 | rel_hash = finfo.section_info[o->target_index].rel_hashes; | |
1029 | erel = external_relocs; | |
1030 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) | |
1031 | { | |
1032 | if (*rel_hash != NULL) | |
1033 | { | |
1034 | BFD_ASSERT ((*rel_hash)->indx >= 0); | |
1035 | irel->r_symndx = (*rel_hash)->indx; | |
1036 | } | |
8b956130 | 1037 | bfd_coff_swap_reloc_out (abfd, irel, erel); |
252b5132 RH |
1038 | } |
1039 | ||
cd339148 NS |
1040 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0) |
1041 | goto error_return; | |
1042 | if (obj_pe (abfd) && o->reloc_count >= 0xffff) | |
1043 | { | |
1044 | /* In PE COFF, write the count of relocs as the first | |
1045 | reloc. The header overflow bit will be set | |
1046 | elsewhere. */ | |
1047 | struct internal_reloc incount; | |
1048 | bfd_byte *excount = (bfd_byte *)bfd_malloc (relsz); | |
1049 | ||
1050 | memset (&incount, 0, sizeof (incount)); | |
1051 | incount.r_vaddr = o->reloc_count + 1; | |
1052 | bfd_coff_swap_reloc_out (abfd, (PTR) &incount, (PTR) excount); | |
1053 | if (bfd_bwrite (excount, relsz, abfd) != relsz) | |
1054 | /* We'll leak, but it's an error anyway. */ | |
1055 | goto error_return; | |
1056 | free (excount); | |
1057 | } | |
1058 | if (bfd_bwrite (external_relocs, | |
1059 | (bfd_size_type) relsz * o->reloc_count, abfd) | |
1060 | != (bfd_size_type) relsz * o->reloc_count) | |
252b5132 RH |
1061 | goto error_return; |
1062 | } | |
1063 | ||
1064 | free (external_relocs); | |
1065 | external_relocs = NULL; | |
1066 | } | |
1067 | ||
1068 | /* Free up the section information. */ | |
1069 | if (finfo.section_info != NULL) | |
1070 | { | |
1071 | unsigned int i; | |
1072 | ||
1073 | for (i = 0; i < abfd->section_count; i++) | |
1074 | { | |
1075 | if (finfo.section_info[i].relocs != NULL) | |
1076 | free (finfo.section_info[i].relocs); | |
1077 | if (finfo.section_info[i].rel_hashes != NULL) | |
1078 | free (finfo.section_info[i].rel_hashes); | |
1079 | } | |
1080 | free (finfo.section_info); | |
1081 | finfo.section_info = NULL; | |
1082 | } | |
1083 | ||
1084 | /* If we have optimized stabs strings, output them. */ | |
3722b82f | 1085 | if (coff_hash_table (info)->stab_info.stabstr != NULL) |
252b5132 RH |
1086 | { |
1087 | if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info)) | |
b34976b6 | 1088 | return FALSE; |
252b5132 RH |
1089 | } |
1090 | ||
1091 | /* Write out the string table. */ | |
1092 | if (obj_raw_syment_count (abfd) != 0 || long_section_names) | |
1093 | { | |
dc810e39 AM |
1094 | file_ptr pos; |
1095 | ||
1096 | pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz; | |
1097 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
b34976b6 | 1098 | return FALSE; |
252b5132 RH |
1099 | |
1100 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 AM |
1101 | H_PUT_32 (abfd, |
1102 | _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE, | |
1103 | strbuf); | |
252b5132 | 1104 | #else |
dc810e39 | 1105 | #error Change H_PUT_32 above |
252b5132 RH |
1106 | #endif |
1107 | ||
dc810e39 AM |
1108 | if (bfd_bwrite (strbuf, (bfd_size_type) STRING_SIZE_SIZE, abfd) |
1109 | != STRING_SIZE_SIZE) | |
b34976b6 | 1110 | return FALSE; |
252b5132 RH |
1111 | |
1112 | if (! _bfd_stringtab_emit (abfd, finfo.strtab)) | |
b34976b6 | 1113 | return FALSE; |
d71f672e | 1114 | |
b34976b6 | 1115 | obj_coff_strings_written (abfd) = TRUE; |
252b5132 RH |
1116 | } |
1117 | ||
1118 | _bfd_stringtab_free (finfo.strtab); | |
1119 | ||
1120 | /* Setting bfd_get_symcount to 0 will cause write_object_contents to | |
1121 | not try to write out the symbols. */ | |
1122 | bfd_get_symcount (abfd) = 0; | |
1123 | ||
b34976b6 | 1124 | return TRUE; |
252b5132 RH |
1125 | |
1126 | error_return: | |
1127 | if (debug_merge_allocated) | |
1128 | coff_debug_merge_hash_table_free (&finfo.debug_merge); | |
1129 | if (finfo.strtab != NULL) | |
1130 | _bfd_stringtab_free (finfo.strtab); | |
1131 | if (finfo.section_info != NULL) | |
1132 | { | |
1133 | unsigned int i; | |
1134 | ||
1135 | for (i = 0; i < abfd->section_count; i++) | |
1136 | { | |
1137 | if (finfo.section_info[i].relocs != NULL) | |
1138 | free (finfo.section_info[i].relocs); | |
1139 | if (finfo.section_info[i].rel_hashes != NULL) | |
1140 | free (finfo.section_info[i].rel_hashes); | |
1141 | } | |
1142 | free (finfo.section_info); | |
1143 | } | |
1144 | if (finfo.internal_syms != NULL) | |
1145 | free (finfo.internal_syms); | |
1146 | if (finfo.sec_ptrs != NULL) | |
1147 | free (finfo.sec_ptrs); | |
1148 | if (finfo.sym_indices != NULL) | |
1149 | free (finfo.sym_indices); | |
1150 | if (finfo.outsyms != NULL) | |
1151 | free (finfo.outsyms); | |
1152 | if (finfo.linenos != NULL) | |
1153 | free (finfo.linenos); | |
1154 | if (finfo.contents != NULL) | |
1155 | free (finfo.contents); | |
1156 | if (finfo.external_relocs != NULL) | |
1157 | free (finfo.external_relocs); | |
1158 | if (finfo.internal_relocs != NULL) | |
1159 | free (finfo.internal_relocs); | |
1160 | if (external_relocs != NULL) | |
1161 | free (external_relocs); | |
b34976b6 | 1162 | return FALSE; |
252b5132 RH |
1163 | } |
1164 | ||
8b956130 | 1165 | /* Parse out a -heap <reserved>,<commit> line. */ |
252b5132 RH |
1166 | |
1167 | static char * | |
8b956130 | 1168 | dores_com (char *ptr, bfd *output_bfd, int heap) |
252b5132 | 1169 | { |
244148ad | 1170 | if (coff_data(output_bfd)->pe) |
252b5132 RH |
1171 | { |
1172 | int val = strtoul (ptr, &ptr, 0); | |
8b956130 | 1173 | |
252b5132 | 1174 | if (heap) |
dc810e39 | 1175 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve = val; |
252b5132 | 1176 | else |
dc810e39 | 1177 | pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve = val; |
252b5132 | 1178 | |
244148ad | 1179 | if (ptr[0] == ',') |
252b5132 | 1180 | { |
dc810e39 | 1181 | val = strtoul (ptr+1, &ptr, 0); |
252b5132 | 1182 | if (heap) |
dc810e39 | 1183 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit = val; |
252b5132 | 1184 | else |
dc810e39 | 1185 | pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit = val; |
252b5132 RH |
1186 | } |
1187 | } | |
1188 | return ptr; | |
1189 | } | |
1190 | ||
8b956130 NC |
1191 | static char * |
1192 | get_name (char *ptr, char **dst) | |
252b5132 RH |
1193 | { |
1194 | while (*ptr == ' ') | |
1195 | ptr++; | |
1196 | *dst = ptr; | |
1197 | while (*ptr && *ptr != ' ') | |
1198 | ptr++; | |
1199 | *ptr = 0; | |
1200 | return ptr+1; | |
1201 | } | |
1202 | ||
8b956130 | 1203 | /* Process any magic embedded commands in a section called .drectve. */ |
244148ad | 1204 | |
252b5132 | 1205 | static int |
8b956130 NC |
1206 | process_embedded_commands (bfd *output_bfd, |
1207 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1208 | bfd *abfd) | |
252b5132 RH |
1209 | { |
1210 | asection *sec = bfd_get_section_by_name (abfd, ".drectve"); | |
1211 | char *s; | |
1212 | char *e; | |
eea6121a | 1213 | bfd_byte *copy; |
8b956130 | 1214 | |
244148ad | 1215 | if (!sec) |
252b5132 | 1216 | return 1; |
244148ad | 1217 | |
eea6121a | 1218 | if (!bfd_malloc_and_get_section (abfd, sec, ©)) |
252b5132 | 1219 | { |
eea6121a AM |
1220 | if (copy != NULL) |
1221 | free (copy); | |
252b5132 RH |
1222 | return 0; |
1223 | } | |
f075ee0c | 1224 | e = (char *) copy + sec->size; |
8b956130 | 1225 | |
f075ee0c | 1226 | for (s = (char *) copy; s < e ; ) |
252b5132 | 1227 | { |
f075ee0c | 1228 | if (s[0] != '-') |
8b956130 NC |
1229 | { |
1230 | s++; | |
1231 | continue; | |
1232 | } | |
f075ee0c | 1233 | if (strncmp (s, "-attr", 5) == 0) |
252b5132 RH |
1234 | { |
1235 | char *name; | |
1236 | char *attribs; | |
1237 | asection *asec; | |
252b5132 RH |
1238 | int loop = 1; |
1239 | int had_write = 0; | |
1240 | int had_read = 0; | |
1241 | int had_exec= 0; | |
1242 | int had_shared= 0; | |
8b956130 | 1243 | |
252b5132 | 1244 | s += 5; |
8b956130 NC |
1245 | s = get_name (s, &name); |
1246 | s = get_name (s, &attribs); | |
1247 | ||
1248 | while (loop) | |
1249 | { | |
1250 | switch (*attribs++) | |
1251 | { | |
1252 | case 'W': | |
1253 | had_write = 1; | |
1254 | break; | |
1255 | case 'R': | |
1256 | had_read = 1; | |
1257 | break; | |
1258 | case 'S': | |
1259 | had_shared = 1; | |
1260 | break; | |
1261 | case 'X': | |
1262 | had_exec = 1; | |
1263 | break; | |
1264 | default: | |
1265 | loop = 0; | |
1266 | } | |
1267 | } | |
252b5132 | 1268 | asec = bfd_get_section_by_name (abfd, name); |
8b956130 NC |
1269 | if (asec) |
1270 | { | |
1271 | if (had_exec) | |
1272 | asec->flags |= SEC_CODE; | |
1273 | if (!had_write) | |
1274 | asec->flags |= SEC_READONLY; | |
1275 | } | |
252b5132 RH |
1276 | } |
1277 | else if (strncmp (s,"-heap", 5) == 0) | |
8b956130 NC |
1278 | s = dores_com (s+5, output_bfd, 1); |
1279 | ||
252b5132 | 1280 | else if (strncmp (s,"-stack", 6) == 0) |
8b956130 NC |
1281 | s = dores_com (s+6, output_bfd, 0); |
1282 | ||
244148ad | 1283 | else |
252b5132 RH |
1284 | s++; |
1285 | } | |
1286 | free (copy); | |
1287 | return 1; | |
1288 | } | |
1289 | ||
1290 | /* Place a marker against all symbols which are used by relocations. | |
1291 | This marker can be picked up by the 'do we skip this symbol ?' | |
1292 | loop in _bfd_coff_link_input_bfd() and used to prevent skipping | |
8b956130 | 1293 | that symbol. */ |
252b5132 RH |
1294 | |
1295 | static void | |
8b956130 | 1296 | mark_relocs (struct coff_final_link_info *finfo, bfd *input_bfd) |
252b5132 RH |
1297 | { |
1298 | asection * a; | |
1299 | ||
1300 | if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0) | |
1301 | return; | |
244148ad | 1302 | |
252b5132 RH |
1303 | for (a = input_bfd->sections; a != (asection *) NULL; a = a->next) |
1304 | { | |
1305 | struct internal_reloc * internal_relocs; | |
1306 | struct internal_reloc * irel; | |
1307 | struct internal_reloc * irelend; | |
1308 | ||
252b5132 RH |
1309 | if ((a->flags & SEC_RELOC) == 0 || a->reloc_count < 1) |
1310 | continue; | |
a8fcf378 NC |
1311 | /* Don't mark relocs in excluded sections. */ |
1312 | if (a->output_section == bfd_abs_section_ptr) | |
1313 | continue; | |
252b5132 RH |
1314 | |
1315 | /* Read in the relocs. */ | |
1316 | internal_relocs = _bfd_coff_read_internal_relocs | |
b34976b6 | 1317 | (input_bfd, a, FALSE, |
252b5132 | 1318 | finfo->external_relocs, |
1049f94e AM |
1319 | finfo->info->relocatable, |
1320 | (finfo->info->relocatable | |
252b5132 RH |
1321 | ? (finfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count) |
1322 | : finfo->internal_relocs) | |
1323 | ); | |
244148ad | 1324 | |
252b5132 RH |
1325 | if (internal_relocs == NULL) |
1326 | continue; | |
1327 | ||
1328 | irel = internal_relocs; | |
1329 | irelend = irel + a->reloc_count; | |
1330 | ||
1331 | /* Place a mark in the sym_indices array (whose entries have | |
1332 | been initialised to 0) for all of the symbols that are used | |
1333 | in the relocation table. This will then be picked up in the | |
8b956130 | 1334 | skip/don't-skip pass. */ |
252b5132 | 1335 | for (; irel < irelend; irel++) |
8b956130 | 1336 | finfo->sym_indices[ irel->r_symndx ] = -1; |
252b5132 RH |
1337 | } |
1338 | } | |
1339 | ||
1340 | /* Link an input file into the linker output file. This function | |
1341 | handles all the sections and relocations of the input file at once. */ | |
1342 | ||
b34976b6 | 1343 | bfd_boolean |
8b956130 | 1344 | _bfd_coff_link_input_bfd (struct coff_final_link_info *finfo, bfd *input_bfd) |
252b5132 | 1345 | { |
b2d638c7 ILT |
1346 | unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask; |
1347 | unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft; | |
b34976b6 | 1348 | bfd_boolean (*adjust_symndx) |
8b956130 NC |
1349 | (bfd *, struct bfd_link_info *, bfd *, asection *, |
1350 | struct internal_reloc *, bfd_boolean *); | |
252b5132 RH |
1351 | bfd *output_bfd; |
1352 | const char *strings; | |
1353 | bfd_size_type syment_base; | |
b34976b6 | 1354 | bfd_boolean copy, hash; |
252b5132 RH |
1355 | bfd_size_type isymesz; |
1356 | bfd_size_type osymesz; | |
1357 | bfd_size_type linesz; | |
1358 | bfd_byte *esym; | |
1359 | bfd_byte *esym_end; | |
1360 | struct internal_syment *isymp; | |
1361 | asection **secpp; | |
1362 | long *indexp; | |
1363 | unsigned long output_index; | |
1364 | bfd_byte *outsym; | |
1365 | struct coff_link_hash_entry **sym_hash; | |
1366 | asection *o; | |
1367 | ||
1368 | /* Move all the symbols to the output file. */ | |
1369 | ||
1370 | output_bfd = finfo->output_bfd; | |
252b5132 RH |
1371 | strings = NULL; |
1372 | syment_base = obj_raw_syment_count (output_bfd); | |
1373 | isymesz = bfd_coff_symesz (input_bfd); | |
1374 | osymesz = bfd_coff_symesz (output_bfd); | |
1375 | linesz = bfd_coff_linesz (input_bfd); | |
1376 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
1377 | ||
b34976b6 | 1378 | copy = FALSE; |
252b5132 | 1379 | if (! finfo->info->keep_memory) |
b34976b6 AM |
1380 | copy = TRUE; |
1381 | hash = TRUE; | |
252b5132 | 1382 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1383 | hash = FALSE; |
252b5132 RH |
1384 | |
1385 | if (! _bfd_coff_get_external_symbols (input_bfd)) | |
b34976b6 | 1386 | return FALSE; |
252b5132 RH |
1387 | |
1388 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1389 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1390 | isymp = finfo->internal_syms; | |
1391 | secpp = finfo->sec_ptrs; | |
1392 | indexp = finfo->sym_indices; | |
1393 | output_index = syment_base; | |
1394 | outsym = finfo->outsyms; | |
1395 | ||
8b956130 NC |
1396 | if (coff_data (output_bfd)->pe |
1397 | && ! process_embedded_commands (output_bfd, finfo->info, input_bfd)) | |
1398 | return FALSE; | |
252b5132 | 1399 | |
8b956130 NC |
1400 | /* If we are going to perform relocations and also strip/discard some |
1401 | symbols then we must make sure that we do not strip/discard those | |
1402 | symbols that are going to be involved in the relocations. */ | |
252b5132 RH |
1403 | if (( finfo->info->strip != strip_none |
1404 | || finfo->info->discard != discard_none) | |
1049f94e | 1405 | && finfo->info->relocatable) |
252b5132 | 1406 | { |
8b956130 | 1407 | /* Mark the symbol array as 'not-used'. */ |
244148ad KH |
1408 | memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp); |
1409 | ||
252b5132 RH |
1410 | mark_relocs (finfo, input_bfd); |
1411 | } | |
1412 | ||
1413 | while (esym < esym_end) | |
1414 | { | |
1415 | struct internal_syment isym; | |
5d54c628 | 1416 | enum coff_symbol_classification classification; |
b34976b6 AM |
1417 | bfd_boolean skip; |
1418 | bfd_boolean global; | |
1419 | bfd_boolean dont_skip_symbol; | |
252b5132 RH |
1420 | int add; |
1421 | ||
8b956130 | 1422 | bfd_coff_swap_sym_in (input_bfd, esym, isymp); |
252b5132 RH |
1423 | |
1424 | /* Make a copy of *isymp so that the relocate_section function | |
1425 | always sees the original values. This is more reliable than | |
1426 | always recomputing the symbol value even if we are stripping | |
1427 | the symbol. */ | |
1428 | isym = *isymp; | |
1429 | ||
5d54c628 ILT |
1430 | classification = bfd_coff_classify_symbol (input_bfd, &isym); |
1431 | switch (classification) | |
252b5132 | 1432 | { |
5d54c628 ILT |
1433 | default: |
1434 | abort (); | |
1435 | case COFF_SYMBOL_GLOBAL: | |
1436 | case COFF_SYMBOL_PE_SECTION: | |
1437 | case COFF_SYMBOL_LOCAL: | |
1438 | *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum); | |
1439 | break; | |
1440 | case COFF_SYMBOL_COMMON: | |
1441 | *secpp = bfd_com_section_ptr; | |
1442 | break; | |
1443 | case COFF_SYMBOL_UNDEFINED: | |
1444 | *secpp = bfd_und_section_ptr; | |
1445 | break; | |
252b5132 RH |
1446 | } |
1447 | ||
1448 | /* Extract the flag indicating if this symbol is used by a | |
1449 | relocation. */ | |
1450 | if ((finfo->info->strip != strip_none | |
1451 | || finfo->info->discard != discard_none) | |
1049f94e | 1452 | && finfo->info->relocatable) |
252b5132 RH |
1453 | dont_skip_symbol = *indexp; |
1454 | else | |
b34976b6 | 1455 | dont_skip_symbol = FALSE; |
244148ad | 1456 | |
252b5132 RH |
1457 | *indexp = -1; |
1458 | ||
b34976b6 AM |
1459 | skip = FALSE; |
1460 | global = FALSE; | |
252b5132 RH |
1461 | add = 1 + isym.n_numaux; |
1462 | ||
1463 | /* If we are stripping all symbols, we want to skip this one. */ | |
1464 | if (finfo->info->strip == strip_all && ! dont_skip_symbol) | |
b34976b6 | 1465 | skip = TRUE; |
252b5132 RH |
1466 | |
1467 | if (! skip) | |
1468 | { | |
5d54c628 | 1469 | switch (classification) |
252b5132 | 1470 | { |
5d54c628 ILT |
1471 | default: |
1472 | abort (); | |
1473 | case COFF_SYMBOL_GLOBAL: | |
1474 | case COFF_SYMBOL_COMMON: | |
1475 | case COFF_SYMBOL_PE_SECTION: | |
252b5132 RH |
1476 | /* This is a global symbol. Global symbols come at the |
1477 | end of the symbol table, so skip them for now. | |
1478 | Locally defined function symbols, however, are an | |
1479 | exception, and are not moved to the end. */ | |
b34976b6 | 1480 | global = TRUE; |
5d54c628 | 1481 | if (! ISFCN (isym.n_type)) |
b34976b6 | 1482 | skip = TRUE; |
5d54c628 ILT |
1483 | break; |
1484 | ||
1485 | case COFF_SYMBOL_UNDEFINED: | |
1486 | /* Undefined symbols are left for the end. */ | |
b34976b6 AM |
1487 | global = TRUE; |
1488 | skip = TRUE; | |
5d54c628 ILT |
1489 | break; |
1490 | ||
1491 | case COFF_SYMBOL_LOCAL: | |
252b5132 RH |
1492 | /* This is a local symbol. Skip it if we are discarding |
1493 | local symbols. */ | |
1494 | if (finfo->info->discard == discard_all && ! dont_skip_symbol) | |
b34976b6 | 1495 | skip = TRUE; |
5d54c628 | 1496 | break; |
252b5132 RH |
1497 | } |
1498 | } | |
1499 | ||
440c4607 NC |
1500 | #ifndef COFF_WITH_PE |
1501 | /* Skip section symbols for sections which are not going to be | |
862517b6 | 1502 | emitted. */ |
440c4607 | 1503 | if (!skip |
3922a8c1 | 1504 | && dont_skip_symbol == 0 |
440c4607 NC |
1505 | && isym.n_sclass == C_STAT |
1506 | && isym.n_type == T_NULL | |
3922a8c1 NC |
1507 | && isym.n_numaux > 0 |
1508 | && (*secpp)->output_section == bfd_abs_section_ptr) | |
1509 | skip = TRUE; | |
440c4607 NC |
1510 | #endif |
1511 | ||
252b5132 RH |
1512 | /* If we stripping debugging symbols, and this is a debugging |
1513 | symbol, then skip it. FIXME: gas sets the section to N_ABS | |
1514 | for some types of debugging symbols; I don't know if this is | |
1515 | a bug or not. In any case, we handle it here. */ | |
1516 | if (! skip | |
1517 | && finfo->info->strip == strip_debugger | |
1518 | && ! dont_skip_symbol | |
1519 | && (isym.n_scnum == N_DEBUG | |
1520 | || (isym.n_scnum == N_ABS | |
1521 | && (isym.n_sclass == C_AUTO | |
1522 | || isym.n_sclass == C_REG | |
1523 | || isym.n_sclass == C_MOS | |
1524 | || isym.n_sclass == C_MOE | |
1525 | || isym.n_sclass == C_MOU | |
1526 | || isym.n_sclass == C_ARG | |
1527 | || isym.n_sclass == C_REGPARM | |
1528 | || isym.n_sclass == C_FIELD | |
1529 | || isym.n_sclass == C_EOS)))) | |
b34976b6 | 1530 | skip = TRUE; |
252b5132 RH |
1531 | |
1532 | /* If some symbols are stripped based on the name, work out the | |
1533 | name and decide whether to skip this symbol. */ | |
1534 | if (! skip | |
1535 | && (finfo->info->strip == strip_some | |
1536 | || finfo->info->discard == discard_l)) | |
1537 | { | |
1538 | const char *name; | |
1539 | char buf[SYMNMLEN + 1]; | |
1540 | ||
1541 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1542 | if (name == NULL) | |
b34976b6 | 1543 | return FALSE; |
252b5132 RH |
1544 | |
1545 | if (! dont_skip_symbol | |
1546 | && ((finfo->info->strip == strip_some | |
b34976b6 AM |
1547 | && (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, |
1548 | FALSE) == NULL)) | |
252b5132 RH |
1549 | || (! global |
1550 | && finfo->info->discard == discard_l | |
1551 | && bfd_is_local_label_name (input_bfd, name)))) | |
b34976b6 | 1552 | skip = TRUE; |
252b5132 RH |
1553 | } |
1554 | ||
1555 | /* If this is an enum, struct, or union tag, see if we have | |
1556 | already output an identical type. */ | |
1557 | if (! skip | |
1558 | && (finfo->output_bfd->flags & BFD_TRADITIONAL_FORMAT) == 0 | |
1559 | && (isym.n_sclass == C_ENTAG | |
1560 | || isym.n_sclass == C_STRTAG | |
1561 | || isym.n_sclass == C_UNTAG) | |
1562 | && isym.n_numaux == 1) | |
1563 | { | |
1564 | const char *name; | |
1565 | char buf[SYMNMLEN + 1]; | |
1566 | struct coff_debug_merge_hash_entry *mh; | |
1567 | struct coff_debug_merge_type *mt; | |
1568 | union internal_auxent aux; | |
1569 | struct coff_debug_merge_element **epp; | |
1570 | bfd_byte *esl, *eslend; | |
1571 | struct internal_syment *islp; | |
dc810e39 | 1572 | bfd_size_type amt; |
252b5132 RH |
1573 | |
1574 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1575 | if (name == NULL) | |
b34976b6 | 1576 | return FALSE; |
252b5132 RH |
1577 | |
1578 | /* Ignore fake names invented by compiler; treat them all as | |
1579 | the same name. */ | |
1580 | if (*name == '~' || *name == '.' || *name == '$' | |
1581 | || (*name == bfd_get_symbol_leading_char (input_bfd) | |
1582 | && (name[1] == '~' || name[1] == '.' || name[1] == '$'))) | |
1583 | name = ""; | |
1584 | ||
1585 | mh = coff_debug_merge_hash_lookup (&finfo->debug_merge, name, | |
b34976b6 | 1586 | TRUE, TRUE); |
252b5132 | 1587 | if (mh == NULL) |
b34976b6 | 1588 | return FALSE; |
252b5132 RH |
1589 | |
1590 | /* Allocate memory to hold type information. If this turns | |
1591 | out to be a duplicate, we pass this address to | |
1592 | bfd_release. */ | |
dc810e39 | 1593 | amt = sizeof (struct coff_debug_merge_type); |
8b956130 | 1594 | mt = bfd_alloc (input_bfd, amt); |
252b5132 | 1595 | if (mt == NULL) |
b34976b6 | 1596 | return FALSE; |
252b5132 RH |
1597 | mt->class = isym.n_sclass; |
1598 | ||
1599 | /* Pick up the aux entry, which points to the end of the tag | |
1600 | entries. */ | |
8b956130 | 1601 | bfd_coff_swap_aux_in (input_bfd, (esym + isymesz), |
252b5132 | 1602 | isym.n_type, isym.n_sclass, 0, isym.n_numaux, |
8b956130 | 1603 | &aux); |
252b5132 RH |
1604 | |
1605 | /* Gather the elements. */ | |
1606 | epp = &mt->elements; | |
1607 | mt->elements = NULL; | |
1608 | islp = isymp + 2; | |
1609 | esl = esym + 2 * isymesz; | |
1610 | eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd) | |
1611 | + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz); | |
1612 | while (esl < eslend) | |
1613 | { | |
1614 | const char *elename; | |
1615 | char elebuf[SYMNMLEN + 1]; | |
00692651 | 1616 | char *name_copy; |
252b5132 | 1617 | |
8b956130 | 1618 | bfd_coff_swap_sym_in (input_bfd, esl, islp); |
252b5132 | 1619 | |
dc810e39 | 1620 | amt = sizeof (struct coff_debug_merge_element); |
8b956130 | 1621 | *epp = bfd_alloc (input_bfd, amt); |
252b5132 | 1622 | if (*epp == NULL) |
b34976b6 | 1623 | return FALSE; |
252b5132 RH |
1624 | |
1625 | elename = _bfd_coff_internal_syment_name (input_bfd, islp, | |
1626 | elebuf); | |
1627 | if (elename == NULL) | |
b34976b6 | 1628 | return FALSE; |
252b5132 | 1629 | |
dc810e39 | 1630 | amt = strlen (elename) + 1; |
8b956130 | 1631 | name_copy = bfd_alloc (input_bfd, amt); |
00692651 | 1632 | if (name_copy == NULL) |
b34976b6 | 1633 | return FALSE; |
00692651 | 1634 | strcpy (name_copy, elename); |
252b5132 | 1635 | |
00692651 | 1636 | (*epp)->name = name_copy; |
252b5132 RH |
1637 | (*epp)->type = islp->n_type; |
1638 | (*epp)->tagndx = 0; | |
1639 | if (islp->n_numaux >= 1 | |
1640 | && islp->n_type != T_NULL | |
1641 | && islp->n_sclass != C_EOS) | |
1642 | { | |
1643 | union internal_auxent eleaux; | |
1644 | long indx; | |
1645 | ||
8b956130 | 1646 | bfd_coff_swap_aux_in (input_bfd, (esl + isymesz), |
252b5132 | 1647 | islp->n_type, islp->n_sclass, 0, |
8b956130 | 1648 | islp->n_numaux, &eleaux); |
252b5132 RH |
1649 | indx = eleaux.x_sym.x_tagndx.l; |
1650 | ||
1651 | /* FIXME: If this tagndx entry refers to a symbol | |
1652 | defined later in this file, we just ignore it. | |
1653 | Handling this correctly would be tedious, and may | |
1654 | not be required. */ | |
252b5132 RH |
1655 | if (indx > 0 |
1656 | && (indx | |
1657 | < ((esym - | |
1658 | (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1659 | / (long) isymesz))) | |
1660 | { | |
1661 | (*epp)->tagndx = finfo->sym_indices[indx]; | |
1662 | if ((*epp)->tagndx < 0) | |
1663 | (*epp)->tagndx = 0; | |
1664 | } | |
1665 | } | |
1666 | epp = &(*epp)->next; | |
1667 | *epp = NULL; | |
1668 | ||
1669 | esl += (islp->n_numaux + 1) * isymesz; | |
1670 | islp += islp->n_numaux + 1; | |
1671 | } | |
1672 | ||
1673 | /* See if we already have a definition which matches this | |
1674 | type. We always output the type if it has no elements, | |
1675 | for simplicity. */ | |
1676 | if (mt->elements == NULL) | |
8b956130 | 1677 | bfd_release (input_bfd, mt); |
252b5132 RH |
1678 | else |
1679 | { | |
1680 | struct coff_debug_merge_type *mtl; | |
1681 | ||
1682 | for (mtl = mh->types; mtl != NULL; mtl = mtl->next) | |
1683 | { | |
1684 | struct coff_debug_merge_element *me, *mel; | |
1685 | ||
1686 | if (mtl->class != mt->class) | |
1687 | continue; | |
1688 | ||
1689 | for (me = mt->elements, mel = mtl->elements; | |
1690 | me != NULL && mel != NULL; | |
1691 | me = me->next, mel = mel->next) | |
1692 | { | |
1693 | if (strcmp (me->name, mel->name) != 0 | |
1694 | || me->type != mel->type | |
1695 | || me->tagndx != mel->tagndx) | |
1696 | break; | |
1697 | } | |
1698 | ||
1699 | if (me == NULL && mel == NULL) | |
1700 | break; | |
1701 | } | |
1702 | ||
1703 | if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base) | |
1704 | { | |
1705 | /* This is the first definition of this type. */ | |
1706 | mt->indx = output_index; | |
1707 | mt->next = mh->types; | |
1708 | mh->types = mt; | |
1709 | } | |
1710 | else | |
1711 | { | |
1712 | /* This is a redefinition which can be merged. */ | |
8b956130 | 1713 | bfd_release (input_bfd, mt); |
252b5132 RH |
1714 | *indexp = mtl->indx; |
1715 | add = (eslend - esym) / isymesz; | |
b34976b6 | 1716 | skip = TRUE; |
252b5132 RH |
1717 | } |
1718 | } | |
1719 | } | |
1720 | ||
1721 | /* We now know whether we are to skip this symbol or not. */ | |
1722 | if (! skip) | |
1723 | { | |
1724 | /* Adjust the symbol in order to output it. */ | |
1725 | ||
1726 | if (isym._n._n_n._n_zeroes == 0 | |
1727 | && isym._n._n_n._n_offset != 0) | |
1728 | { | |
1729 | const char *name; | |
1730 | bfd_size_type indx; | |
1731 | ||
1732 | /* This symbol has a long name. Enter it in the string | |
1733 | table we are building. Note that we do not check | |
1734 | bfd_coff_symname_in_debug. That is only true for | |
1735 | XCOFF, and XCOFF requires different linking code | |
1736 | anyhow. */ | |
8b956130 | 1737 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, NULL); |
252b5132 | 1738 | if (name == NULL) |
b34976b6 | 1739 | return FALSE; |
252b5132 RH |
1740 | indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); |
1741 | if (indx == (bfd_size_type) -1) | |
b34976b6 | 1742 | return FALSE; |
252b5132 RH |
1743 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; |
1744 | } | |
1745 | ||
8add8e30 | 1746 | switch (isym.n_sclass) |
252b5132 | 1747 | { |
8add8e30 ILT |
1748 | case C_AUTO: |
1749 | case C_MOS: | |
1750 | case C_EOS: | |
1751 | case C_MOE: | |
1752 | case C_MOU: | |
1753 | case C_UNTAG: | |
1754 | case C_STRTAG: | |
1755 | case C_ENTAG: | |
1756 | case C_TPDEF: | |
1757 | case C_ARG: | |
1758 | case C_USTATIC: | |
1759 | case C_REG: | |
1760 | case C_REGPARM: | |
1761 | case C_FIELD: | |
1762 | /* The symbol value should not be modified. */ | |
1763 | break; | |
1764 | ||
1765 | case C_FCN: | |
1766 | if (obj_pe (input_bfd) | |
1767 | && strcmp (isym.n_name, ".bf") != 0 | |
1768 | && isym.n_scnum > 0) | |
1769 | { | |
1770 | /* For PE, .lf and .ef get their value left alone, | |
1771 | while .bf gets relocated. However, they all have | |
1772 | "real" section numbers, and need to be moved into | |
1773 | the new section. */ | |
1774 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1775 | break; | |
1776 | } | |
1777 | /* Fall through. */ | |
1778 | default: | |
1779 | case C_LABEL: /* Not completely sure about these 2 */ | |
1780 | case C_EXTDEF: | |
1781 | case C_BLOCK: | |
1782 | case C_EFCN: | |
1783 | case C_NULL: | |
1784 | case C_EXT: | |
1785 | case C_STAT: | |
1786 | case C_SECTION: | |
1787 | case C_NT_WEAK: | |
1788 | /* Compute new symbol location. */ | |
1789 | if (isym.n_scnum > 0) | |
1790 | { | |
1791 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1792 | isym.n_value += (*secpp)->output_offset; | |
1793 | if (! obj_pe (input_bfd)) | |
1794 | isym.n_value -= (*secpp)->vma; | |
1795 | if (! obj_pe (finfo->output_bfd)) | |
1796 | isym.n_value += (*secpp)->output_section->vma; | |
1797 | } | |
1798 | break; | |
1799 | ||
1800 | case C_FILE: | |
1801 | /* The value of a C_FILE symbol is the symbol index of | |
1802 | the next C_FILE symbol. The value of the last C_FILE | |
1803 | symbol is the symbol index to the first external | |
1804 | symbol (actually, coff_renumber_symbols does not get | |
1805 | this right--it just sets the value of the last C_FILE | |
1806 | symbol to zero--and nobody has ever complained about | |
1807 | it). We try to get this right, below, just before we | |
1808 | write the symbols out, but in the general case we may | |
1809 | have to write the symbol out twice. */ | |
252b5132 | 1810 | if (finfo->last_file_index != -1 |
cea4409c | 1811 | && finfo->last_file.n_value != (bfd_vma) output_index) |
252b5132 | 1812 | { |
8add8e30 ILT |
1813 | /* We must correct the value of the last C_FILE |
1814 | entry. */ | |
252b5132 RH |
1815 | finfo->last_file.n_value = output_index; |
1816 | if ((bfd_size_type) finfo->last_file_index >= syment_base) | |
1817 | { | |
1818 | /* The last C_FILE symbol is in this input file. */ | |
1819 | bfd_coff_swap_sym_out (output_bfd, | |
8b956130 NC |
1820 | &finfo->last_file, |
1821 | (finfo->outsyms | |
1822 | + ((finfo->last_file_index | |
1823 | - syment_base) | |
1824 | * osymesz))); | |
252b5132 RH |
1825 | } |
1826 | else | |
1827 | { | |
dc810e39 AM |
1828 | file_ptr pos; |
1829 | ||
252b5132 RH |
1830 | /* We have already written out the last C_FILE |
1831 | symbol. We need to write it out again. We | |
1832 | borrow *outsym temporarily. */ | |
1833 | bfd_coff_swap_sym_out (output_bfd, | |
8b956130 | 1834 | &finfo->last_file, outsym); |
dc810e39 AM |
1835 | pos = obj_sym_filepos (output_bfd); |
1836 | pos += finfo->last_file_index * osymesz; | |
1837 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
1838 | || bfd_bwrite (outsym, osymesz, output_bfd) != osymesz) | |
b34976b6 | 1839 | return FALSE; |
252b5132 RH |
1840 | } |
1841 | } | |
1842 | ||
1843 | finfo->last_file_index = output_index; | |
1844 | finfo->last_file = isym; | |
8add8e30 | 1845 | break; |
252b5132 RH |
1846 | } |
1847 | ||
1848 | /* If doing task linking, convert normal global function symbols to | |
e4202681 NC |
1849 | static functions. */ |
1850 | if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym)) | |
252b5132 RH |
1851 | isym.n_sclass = C_STAT; |
1852 | ||
1853 | /* Output the symbol. */ | |
8b956130 | 1854 | bfd_coff_swap_sym_out (output_bfd, &isym, outsym); |
252b5132 RH |
1855 | |
1856 | *indexp = output_index; | |
1857 | ||
1858 | if (global) | |
1859 | { | |
1860 | long indx; | |
1861 | struct coff_link_hash_entry *h; | |
1862 | ||
1863 | indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1864 | / isymesz); | |
1865 | h = obj_coff_sym_hashes (input_bfd)[indx]; | |
1866 | if (h == NULL) | |
1867 | { | |
1868 | /* This can happen if there were errors earlier in | |
1869 | the link. */ | |
1870 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1871 | return FALSE; |
252b5132 RH |
1872 | } |
1873 | h->indx = output_index; | |
1874 | } | |
1875 | ||
1876 | output_index += add; | |
1877 | outsym += add * osymesz; | |
1878 | } | |
1879 | ||
1880 | esym += add * isymesz; | |
1881 | isymp += add; | |
1882 | ++secpp; | |
1883 | ++indexp; | |
1884 | for (--add; add > 0; --add) | |
1885 | { | |
1886 | *secpp++ = NULL; | |
1887 | *indexp++ = -1; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | /* Fix up the aux entries. This must be done in a separate pass, | |
1892 | because we don't know the correct symbol indices until we have | |
1893 | already decided which symbols we are going to keep. */ | |
252b5132 RH |
1894 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); |
1895 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1896 | isymp = finfo->internal_syms; | |
1897 | indexp = finfo->sym_indices; | |
1898 | sym_hash = obj_coff_sym_hashes (input_bfd); | |
1899 | outsym = finfo->outsyms; | |
8b956130 | 1900 | |
252b5132 RH |
1901 | while (esym < esym_end) |
1902 | { | |
1903 | int add; | |
1904 | ||
1905 | add = 1 + isymp->n_numaux; | |
1906 | ||
1907 | if ((*indexp < 0 | |
1908 | || (bfd_size_type) *indexp < syment_base) | |
1909 | && (*sym_hash == NULL | |
1910 | || (*sym_hash)->auxbfd != input_bfd)) | |
1911 | esym += add * isymesz; | |
1912 | else | |
1913 | { | |
1914 | struct coff_link_hash_entry *h; | |
1915 | int i; | |
1916 | ||
1917 | h = NULL; | |
1918 | if (*indexp < 0) | |
1919 | { | |
1920 | h = *sym_hash; | |
1921 | ||
1922 | /* The m68k-motorola-sysv assembler will sometimes | |
1923 | generate two symbols with the same name, but only one | |
1924 | will have aux entries. */ | |
1925 | BFD_ASSERT (isymp->n_numaux == 0 | |
1926 | || h->numaux == isymp->n_numaux); | |
1927 | } | |
1928 | ||
1929 | esym += isymesz; | |
1930 | ||
1931 | if (h == NULL) | |
1932 | outsym += osymesz; | |
1933 | ||
1934 | /* Handle the aux entries. This handling is based on | |
1935 | coff_pointerize_aux. I don't know if it always correct. */ | |
1936 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) | |
1937 | { | |
1938 | union internal_auxent aux; | |
1939 | union internal_auxent *auxp; | |
1940 | ||
1941 | if (h != NULL) | |
1942 | auxp = h->aux + i; | |
1943 | else | |
1944 | { | |
8b956130 NC |
1945 | bfd_coff_swap_aux_in (input_bfd, esym, isymp->n_type, |
1946 | isymp->n_sclass, i, isymp->n_numaux, &aux); | |
252b5132 RH |
1947 | auxp = &aux; |
1948 | } | |
1949 | ||
1950 | if (isymp->n_sclass == C_FILE) | |
1951 | { | |
1952 | /* If this is a long filename, we must put it in the | |
1953 | string table. */ | |
1954 | if (auxp->x_file.x_n.x_zeroes == 0 | |
1955 | && auxp->x_file.x_n.x_offset != 0) | |
1956 | { | |
1957 | const char *filename; | |
1958 | bfd_size_type indx; | |
1959 | ||
1960 | BFD_ASSERT (auxp->x_file.x_n.x_offset | |
1961 | >= STRING_SIZE_SIZE); | |
1962 | if (strings == NULL) | |
1963 | { | |
1964 | strings = _bfd_coff_read_string_table (input_bfd); | |
1965 | if (strings == NULL) | |
b34976b6 | 1966 | return FALSE; |
252b5132 RH |
1967 | } |
1968 | filename = strings + auxp->x_file.x_n.x_offset; | |
1969 | indx = _bfd_stringtab_add (finfo->strtab, filename, | |
1970 | hash, copy); | |
1971 | if (indx == (bfd_size_type) -1) | |
b34976b6 | 1972 | return FALSE; |
252b5132 RH |
1973 | auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; |
1974 | } | |
1975 | } | |
0c429e07 NC |
1976 | else if ((isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) |
1977 | && isymp->n_sclass != C_NT_WEAK) | |
252b5132 RH |
1978 | { |
1979 | unsigned long indx; | |
1980 | ||
1981 | if (ISFCN (isymp->n_type) | |
1982 | || ISTAG (isymp->n_sclass) | |
1983 | || isymp->n_sclass == C_BLOCK | |
1984 | || isymp->n_sclass == C_FCN) | |
1985 | { | |
1986 | indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l; | |
1987 | if (indx > 0 | |
1988 | && indx < obj_raw_syment_count (input_bfd)) | |
1989 | { | |
1990 | /* We look forward through the symbol for | |
1991 | the index of the next symbol we are going | |
1992 | to include. I don't know if this is | |
1993 | entirely right. */ | |
1994 | while ((finfo->sym_indices[indx] < 0 | |
1995 | || ((bfd_size_type) finfo->sym_indices[indx] | |
1996 | < syment_base)) | |
1997 | && indx < obj_raw_syment_count (input_bfd)) | |
1998 | ++indx; | |
1999 | if (indx >= obj_raw_syment_count (input_bfd)) | |
2000 | indx = output_index; | |
2001 | else | |
2002 | indx = finfo->sym_indices[indx]; | |
2003 | auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx; | |
2004 | } | |
2005 | } | |
2006 | ||
2007 | indx = auxp->x_sym.x_tagndx.l; | |
2008 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) | |
2009 | { | |
2010 | long symindx; | |
2011 | ||
2012 | symindx = finfo->sym_indices[indx]; | |
2013 | if (symindx < 0) | |
2014 | auxp->x_sym.x_tagndx.l = 0; | |
2015 | else | |
2016 | auxp->x_sym.x_tagndx.l = symindx; | |
2017 | } | |
2018 | ||
2019 | /* The .bf symbols are supposed to be linked through | |
2020 | the endndx field. We need to carry this list | |
2021 | across object files. */ | |
2022 | if (i == 0 | |
2023 | && h == NULL | |
2024 | && isymp->n_sclass == C_FCN | |
2025 | && (isymp->_n._n_n._n_zeroes != 0 | |
2026 | || isymp->_n._n_n._n_offset == 0) | |
2027 | && isymp->_n._n_name[0] == '.' | |
2028 | && isymp->_n._n_name[1] == 'b' | |
2029 | && isymp->_n._n_name[2] == 'f' | |
2030 | && isymp->_n._n_name[3] == '\0') | |
2031 | { | |
2032 | if (finfo->last_bf_index != -1) | |
2033 | { | |
2034 | finfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
2035 | *indexp; | |
2036 | ||
2037 | if ((bfd_size_type) finfo->last_bf_index | |
2038 | >= syment_base) | |
2039 | { | |
8b956130 | 2040 | void *auxout; |
252b5132 RH |
2041 | |
2042 | /* The last .bf symbol is in this input | |
2043 | file. This will only happen if the | |
2044 | assembler did not set up the .bf | |
2045 | endndx symbols correctly. */ | |
8b956130 NC |
2046 | auxout = (finfo->outsyms |
2047 | + ((finfo->last_bf_index | |
2048 | - syment_base) | |
2049 | * osymesz)); | |
2050 | ||
252b5132 | 2051 | bfd_coff_swap_aux_out (output_bfd, |
8b956130 | 2052 | &finfo->last_bf, |
252b5132 RH |
2053 | isymp->n_type, |
2054 | isymp->n_sclass, | |
2055 | 0, isymp->n_numaux, | |
2056 | auxout); | |
2057 | } | |
2058 | else | |
2059 | { | |
dc810e39 AM |
2060 | file_ptr pos; |
2061 | ||
252b5132 RH |
2062 | /* We have already written out the last |
2063 | .bf aux entry. We need to write it | |
2064 | out again. We borrow *outsym | |
2065 | temporarily. FIXME: This case should | |
2066 | be made faster. */ | |
2067 | bfd_coff_swap_aux_out (output_bfd, | |
8b956130 | 2068 | &finfo->last_bf, |
252b5132 RH |
2069 | isymp->n_type, |
2070 | isymp->n_sclass, | |
2071 | 0, isymp->n_numaux, | |
8b956130 | 2072 | outsym); |
dc810e39 AM |
2073 | pos = obj_sym_filepos (output_bfd); |
2074 | pos += finfo->last_bf_index * osymesz; | |
2075 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2076 | || (bfd_bwrite (outsym, osymesz, output_bfd) | |
2077 | != osymesz)) | |
b34976b6 | 2078 | return FALSE; |
252b5132 RH |
2079 | } |
2080 | } | |
2081 | ||
2082 | if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0) | |
2083 | finfo->last_bf_index = -1; | |
2084 | else | |
2085 | { | |
2086 | /* The endndx field of this aux entry must | |
2087 | be updated with the symbol number of the | |
2088 | next .bf symbol. */ | |
2089 | finfo->last_bf = *auxp; | |
2090 | finfo->last_bf_index = (((outsym - finfo->outsyms) | |
2091 | / osymesz) | |
2092 | + syment_base); | |
2093 | } | |
2094 | } | |
2095 | } | |
2096 | ||
2097 | if (h == NULL) | |
2098 | { | |
8b956130 | 2099 | bfd_coff_swap_aux_out (output_bfd, auxp, isymp->n_type, |
252b5132 | 2100 | isymp->n_sclass, i, isymp->n_numaux, |
8b956130 | 2101 | outsym); |
252b5132 RH |
2102 | outsym += osymesz; |
2103 | } | |
2104 | ||
2105 | esym += isymesz; | |
2106 | } | |
2107 | } | |
2108 | ||
2109 | indexp += add; | |
2110 | isymp += add; | |
2111 | sym_hash += add; | |
2112 | } | |
2113 | ||
2114 | /* Relocate the line numbers, unless we are stripping them. */ | |
2115 | if (finfo->info->strip == strip_none | |
2116 | || finfo->info->strip == strip_some) | |
2117 | { | |
2118 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2119 | { | |
2120 | bfd_vma offset; | |
2121 | bfd_byte *eline; | |
2122 | bfd_byte *elineend; | |
b545f675 | 2123 | bfd_byte *oeline; |
b34976b6 | 2124 | bfd_boolean skipping; |
dc810e39 AM |
2125 | file_ptr pos; |
2126 | bfd_size_type amt; | |
252b5132 RH |
2127 | |
2128 | /* FIXME: If SEC_HAS_CONTENTS is not for the section, then | |
2129 | build_link_order in ldwrite.c will not have created a | |
2130 | link order, which means that we will not have seen this | |
2131 | input section in _bfd_coff_final_link, which means that | |
2132 | we will not have allocated space for the line numbers of | |
2133 | this section. I don't think line numbers can be | |
2134 | meaningful for a section which does not have | |
2135 | SEC_HAS_CONTENTS set, but, if they do, this must be | |
2136 | changed. */ | |
2137 | if (o->lineno_count == 0 | |
2138 | || (o->output_section->flags & SEC_HAS_CONTENTS) == 0) | |
2139 | continue; | |
2140 | ||
2141 | if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0 | |
dc810e39 | 2142 | || bfd_bread (finfo->linenos, linesz * o->lineno_count, |
252b5132 | 2143 | input_bfd) != linesz * o->lineno_count) |
b34976b6 | 2144 | return FALSE; |
252b5132 RH |
2145 | |
2146 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2147 | eline = finfo->linenos; | |
b545f675 | 2148 | oeline = finfo->linenos; |
252b5132 | 2149 | elineend = eline + linesz * o->lineno_count; |
b34976b6 | 2150 | skipping = FALSE; |
252b5132 RH |
2151 | for (; eline < elineend; eline += linesz) |
2152 | { | |
2153 | struct internal_lineno iline; | |
2154 | ||
8b956130 | 2155 | bfd_coff_swap_lineno_in (input_bfd, eline, &iline); |
252b5132 RH |
2156 | |
2157 | if (iline.l_lnno != 0) | |
2158 | iline.l_addr.l_paddr += offset; | |
2159 | else if (iline.l_addr.l_symndx >= 0 | |
2160 | && ((unsigned long) iline.l_addr.l_symndx | |
2161 | < obj_raw_syment_count (input_bfd))) | |
2162 | { | |
2163 | long indx; | |
2164 | ||
2165 | indx = finfo->sym_indices[iline.l_addr.l_symndx]; | |
2166 | ||
2167 | if (indx < 0) | |
2168 | { | |
2169 | /* These line numbers are attached to a symbol | |
b545f675 ILT |
2170 | which we are stripping. We must discard the |
2171 | line numbers because reading them back with | |
2172 | no associated symbol (or associating them all | |
2173 | with symbol #0) will fail. We can't regain | |
2174 | the space in the output file, but at least | |
2175 | they're dense. */ | |
b34976b6 | 2176 | skipping = TRUE; |
252b5132 RH |
2177 | } |
2178 | else | |
2179 | { | |
2180 | struct internal_syment is; | |
2181 | union internal_auxent ia; | |
2182 | ||
2183 | /* Fix up the lnnoptr field in the aux entry of | |
2184 | the symbol. It turns out that we can't do | |
2185 | this when we modify the symbol aux entries, | |
2186 | because gas sometimes screws up the lnnoptr | |
2187 | field and makes it an offset from the start | |
2188 | of the line numbers rather than an absolute | |
2189 | file index. */ | |
2190 | bfd_coff_swap_sym_in (output_bfd, | |
8b956130 NC |
2191 | (finfo->outsyms |
2192 | + ((indx - syment_base) | |
2193 | * osymesz)), &is); | |
252b5132 RH |
2194 | if ((ISFCN (is.n_type) |
2195 | || is.n_sclass == C_BLOCK) | |
2196 | && is.n_numaux >= 1) | |
2197 | { | |
8b956130 | 2198 | void *auxptr; |
252b5132 | 2199 | |
8b956130 NC |
2200 | auxptr = (finfo->outsyms |
2201 | + ((indx - syment_base + 1) | |
2202 | * osymesz)); | |
252b5132 RH |
2203 | bfd_coff_swap_aux_in (output_bfd, auxptr, |
2204 | is.n_type, is.n_sclass, | |
8b956130 | 2205 | 0, is.n_numaux, &ia); |
252b5132 RH |
2206 | ia.x_sym.x_fcnary.x_fcn.x_lnnoptr = |
2207 | (o->output_section->line_filepos | |
2208 | + o->output_section->lineno_count * linesz | |
2209 | + eline - finfo->linenos); | |
8b956130 | 2210 | bfd_coff_swap_aux_out (output_bfd, &ia, |
252b5132 RH |
2211 | is.n_type, is.n_sclass, 0, |
2212 | is.n_numaux, auxptr); | |
2213 | } | |
b545f675 | 2214 | |
b34976b6 | 2215 | skipping = FALSE; |
252b5132 RH |
2216 | } |
2217 | ||
2218 | iline.l_addr.l_symndx = indx; | |
2219 | } | |
2220 | ||
b545f675 ILT |
2221 | if (!skipping) |
2222 | { | |
8b956130 | 2223 | bfd_coff_swap_lineno_out (output_bfd, &iline, oeline); |
b545f675 ILT |
2224 | oeline += linesz; |
2225 | } | |
252b5132 RH |
2226 | } |
2227 | ||
dc810e39 AM |
2228 | pos = o->output_section->line_filepos; |
2229 | pos += o->output_section->lineno_count * linesz; | |
2230 | amt = oeline - finfo->linenos; | |
2231 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2232 | || bfd_bwrite (finfo->linenos, amt, output_bfd) != amt) | |
b34976b6 | 2233 | return FALSE; |
252b5132 | 2234 | |
dc810e39 | 2235 | o->output_section->lineno_count += amt / linesz; |
252b5132 RH |
2236 | } |
2237 | } | |
2238 | ||
2239 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE | |
2240 | symbol will be the first symbol in the next input file. In the | |
2241 | normal case, this will save us from writing out the C_FILE symbol | |
2242 | again. */ | |
2243 | if (finfo->last_file_index != -1 | |
2244 | && (bfd_size_type) finfo->last_file_index >= syment_base) | |
2245 | { | |
2246 | finfo->last_file.n_value = output_index; | |
8b956130 NC |
2247 | bfd_coff_swap_sym_out (output_bfd, &finfo->last_file, |
2248 | (finfo->outsyms | |
2249 | + ((finfo->last_file_index - syment_base) | |
2250 | * osymesz))); | |
252b5132 RH |
2251 | } |
2252 | ||
2253 | /* Write the modified symbols to the output file. */ | |
2254 | if (outsym > finfo->outsyms) | |
2255 | { | |
dc810e39 AM |
2256 | file_ptr pos; |
2257 | bfd_size_type amt; | |
2258 | ||
2259 | pos = obj_sym_filepos (output_bfd) + syment_base * osymesz; | |
2260 | amt = outsym - finfo->outsyms; | |
2261 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2262 | || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt) | |
b34976b6 | 2263 | return FALSE; |
252b5132 RH |
2264 | |
2265 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) | |
2266 | + (outsym - finfo->outsyms) / osymesz) | |
2267 | == output_index); | |
2268 | ||
2269 | obj_raw_syment_count (output_bfd) = output_index; | |
2270 | } | |
2271 | ||
2272 | /* Relocate the contents of each section. */ | |
2273 | adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx; | |
2274 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2275 | { | |
2276 | bfd_byte *contents; | |
2277 | struct coff_section_tdata *secdata; | |
2278 | ||
2279 | if (! o->linker_mark) | |
8b956130 NC |
2280 | /* This section was omitted from the link. */ |
2281 | continue; | |
252b5132 | 2282 | |
3722b82f AM |
2283 | if ((o->flags & SEC_LINKER_CREATED) != 0) |
2284 | continue; | |
2285 | ||
252b5132 | 2286 | if ((o->flags & SEC_HAS_CONTENTS) == 0 |
eea6121a | 2287 | || (o->size == 0 && (o->flags & SEC_RELOC) == 0)) |
252b5132 RH |
2288 | { |
2289 | if ((o->flags & SEC_RELOC) != 0 | |
2290 | && o->reloc_count != 0) | |
2291 | { | |
d003868e AM |
2292 | (*_bfd_error_handler) |
2293 | (_("%B: relocs in section `%A', but it has no contents"), | |
2294 | input_bfd, o); | |
252b5132 | 2295 | bfd_set_error (bfd_error_no_contents); |
b34976b6 | 2296 | return FALSE; |
252b5132 RH |
2297 | } |
2298 | ||
2299 | continue; | |
2300 | } | |
2301 | ||
2302 | secdata = coff_section_data (input_bfd, o); | |
2303 | if (secdata != NULL && secdata->contents != NULL) | |
2304 | contents = secdata->contents; | |
2305 | else | |
2306 | { | |
eea6121a AM |
2307 | bfd_size_type x = o->rawsize ? o->rawsize : o->size; |
2308 | if (! bfd_get_section_contents (input_bfd, o, finfo->contents, 0, x)) | |
b34976b6 | 2309 | return FALSE; |
252b5132 RH |
2310 | contents = finfo->contents; |
2311 | } | |
2312 | ||
2313 | if ((o->flags & SEC_RELOC) != 0) | |
2314 | { | |
2315 | int target_index; | |
2316 | struct internal_reloc *internal_relocs; | |
2317 | struct internal_reloc *irel; | |
2318 | ||
2319 | /* Read in the relocs. */ | |
2320 | target_index = o->output_section->target_index; | |
2321 | internal_relocs = (_bfd_coff_read_internal_relocs | |
b34976b6 | 2322 | (input_bfd, o, FALSE, finfo->external_relocs, |
1049f94e AM |
2323 | finfo->info->relocatable, |
2324 | (finfo->info->relocatable | |
252b5132 RH |
2325 | ? (finfo->section_info[target_index].relocs |
2326 | + o->output_section->reloc_count) | |
2327 | : finfo->internal_relocs))); | |
2328 | if (internal_relocs == NULL) | |
b34976b6 | 2329 | return FALSE; |
252b5132 RH |
2330 | |
2331 | /* Call processor specific code to relocate the section | |
2332 | contents. */ | |
2333 | if (! bfd_coff_relocate_section (output_bfd, finfo->info, | |
2334 | input_bfd, o, | |
2335 | contents, | |
2336 | internal_relocs, | |
2337 | finfo->internal_syms, | |
2338 | finfo->sec_ptrs)) | |
b34976b6 | 2339 | return FALSE; |
252b5132 | 2340 | |
1049f94e | 2341 | if (finfo->info->relocatable) |
252b5132 RH |
2342 | { |
2343 | bfd_vma offset; | |
2344 | struct internal_reloc *irelend; | |
2345 | struct coff_link_hash_entry **rel_hash; | |
2346 | ||
2347 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2348 | irel = internal_relocs; | |
2349 | irelend = irel + o->reloc_count; | |
2350 | rel_hash = (finfo->section_info[target_index].rel_hashes | |
2351 | + o->output_section->reloc_count); | |
2352 | for (; irel < irelend; irel++, rel_hash++) | |
2353 | { | |
2354 | struct coff_link_hash_entry *h; | |
b34976b6 | 2355 | bfd_boolean adjusted; |
252b5132 RH |
2356 | |
2357 | *rel_hash = NULL; | |
2358 | ||
2359 | /* Adjust the reloc address and symbol index. */ | |
252b5132 RH |
2360 | irel->r_vaddr += offset; |
2361 | ||
2362 | if (irel->r_symndx == -1) | |
2363 | continue; | |
2364 | ||
2365 | if (adjust_symndx) | |
2366 | { | |
2367 | if (! (*adjust_symndx) (output_bfd, finfo->info, | |
2368 | input_bfd, o, irel, | |
2369 | &adjusted)) | |
b34976b6 | 2370 | return FALSE; |
252b5132 RH |
2371 | if (adjusted) |
2372 | continue; | |
2373 | } | |
2374 | ||
2375 | h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx]; | |
2376 | if (h != NULL) | |
2377 | { | |
2378 | /* This is a global symbol. */ | |
2379 | if (h->indx >= 0) | |
2380 | irel->r_symndx = h->indx; | |
2381 | else | |
2382 | { | |
2383 | /* This symbol is being written at the end | |
2384 | of the file, and we do not yet know the | |
2385 | symbol index. We save the pointer to the | |
2386 | hash table entry in the rel_hash list. | |
2387 | We set the indx field to -2 to indicate | |
2388 | that this symbol must not be stripped. */ | |
2389 | *rel_hash = h; | |
2390 | h->indx = -2; | |
2391 | } | |
2392 | } | |
2393 | else | |
2394 | { | |
2395 | long indx; | |
2396 | ||
2397 | indx = finfo->sym_indices[irel->r_symndx]; | |
2398 | if (indx != -1) | |
2399 | irel->r_symndx = indx; | |
2400 | else | |
2401 | { | |
2402 | struct internal_syment *is; | |
2403 | const char *name; | |
2404 | char buf[SYMNMLEN + 1]; | |
2405 | ||
2406 | /* This reloc is against a symbol we are | |
2407 | stripping. This should have been handled | |
2408 | by the 'dont_skip_symbol' code in the while | |
244148ad | 2409 | loop at the top of this function. */ |
252b5132 RH |
2410 | is = finfo->internal_syms + irel->r_symndx; |
2411 | ||
2412 | name = (_bfd_coff_internal_syment_name | |
2413 | (input_bfd, is, buf)); | |
2414 | if (name == NULL) | |
b34976b6 | 2415 | return FALSE; |
252b5132 RH |
2416 | |
2417 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2418 | (finfo->info, name, input_bfd, o, | |
2419 | irel->r_vaddr))) | |
b34976b6 | 2420 | return FALSE; |
252b5132 RH |
2421 | } |
2422 | } | |
2423 | } | |
2424 | ||
2425 | o->output_section->reloc_count += o->reloc_count; | |
2426 | } | |
2427 | } | |
2428 | ||
2429 | /* Write out the modified section contents. */ | |
2430 | if (secdata == NULL || secdata->stab_info == NULL) | |
2431 | { | |
dc810e39 | 2432 | file_ptr loc = o->output_offset * bfd_octets_per_byte (output_bfd); |
252b5132 | 2433 | if (! bfd_set_section_contents (output_bfd, o->output_section, |
eea6121a | 2434 | contents, loc, o->size)) |
b34976b6 | 2435 | return FALSE; |
252b5132 RH |
2436 | } |
2437 | else | |
2438 | { | |
2439 | if (! (_bfd_write_section_stabs | |
2440 | (output_bfd, &coff_hash_table (finfo->info)->stab_info, | |
2441 | o, &secdata->stab_info, contents))) | |
b34976b6 | 2442 | return FALSE; |
252b5132 RH |
2443 | } |
2444 | } | |
2445 | ||
8b956130 NC |
2446 | if (! finfo->info->keep_memory |
2447 | && ! _bfd_coff_free_symbols (input_bfd)) | |
2448 | return FALSE; | |
252b5132 | 2449 | |
b34976b6 | 2450 | return TRUE; |
252b5132 RH |
2451 | } |
2452 | ||
2453 | /* Write out a global symbol. Called via coff_link_hash_traverse. */ | |
2454 | ||
b34976b6 | 2455 | bfd_boolean |
8b956130 | 2456 | _bfd_coff_write_global_sym (struct coff_link_hash_entry *h, void *data) |
252b5132 RH |
2457 | { |
2458 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
2459 | bfd *output_bfd; | |
2460 | struct internal_syment isym; | |
2461 | bfd_size_type symesz; | |
2462 | unsigned int i; | |
dc810e39 | 2463 | file_ptr pos; |
252b5132 RH |
2464 | |
2465 | output_bfd = finfo->output_bfd; | |
2466 | ||
e92d460e AM |
2467 | if (h->root.type == bfd_link_hash_warning) |
2468 | { | |
2469 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2470 | if (h->root.type == bfd_link_hash_new) | |
b34976b6 | 2471 | return TRUE; |
e92d460e AM |
2472 | } |
2473 | ||
252b5132 | 2474 | if (h->indx >= 0) |
b34976b6 | 2475 | return TRUE; |
252b5132 RH |
2476 | |
2477 | if (h->indx != -2 | |
2478 | && (finfo->info->strip == strip_all | |
2479 | || (finfo->info->strip == strip_some | |
2480 | && (bfd_hash_lookup (finfo->info->keep_hash, | |
b34976b6 | 2481 | h->root.root.string, FALSE, FALSE) |
252b5132 | 2482 | == NULL)))) |
b34976b6 | 2483 | return TRUE; |
252b5132 RH |
2484 | |
2485 | switch (h->root.type) | |
2486 | { | |
2487 | default: | |
2488 | case bfd_link_hash_new: | |
e92d460e | 2489 | case bfd_link_hash_warning: |
252b5132 | 2490 | abort (); |
b34976b6 | 2491 | return FALSE; |
252b5132 RH |
2492 | |
2493 | case bfd_link_hash_undefined: | |
2494 | case bfd_link_hash_undefweak: | |
2495 | isym.n_scnum = N_UNDEF; | |
2496 | isym.n_value = 0; | |
2497 | break; | |
2498 | ||
2499 | case bfd_link_hash_defined: | |
2500 | case bfd_link_hash_defweak: | |
2501 | { | |
2502 | asection *sec; | |
2503 | ||
2504 | sec = h->root.u.def.section->output_section; | |
2505 | if (bfd_is_abs_section (sec)) | |
2506 | isym.n_scnum = N_ABS; | |
2507 | else | |
2508 | isym.n_scnum = sec->target_index; | |
2509 | isym.n_value = (h->root.u.def.value | |
2510 | + h->root.u.def.section->output_offset); | |
2511 | if (! obj_pe (finfo->output_bfd)) | |
2512 | isym.n_value += sec->vma; | |
2513 | } | |
2514 | break; | |
2515 | ||
2516 | case bfd_link_hash_common: | |
2517 | isym.n_scnum = N_UNDEF; | |
2518 | isym.n_value = h->root.u.c.size; | |
2519 | break; | |
2520 | ||
2521 | case bfd_link_hash_indirect: | |
252b5132 | 2522 | /* Just ignore these. They can't be handled anyhow. */ |
b34976b6 | 2523 | return TRUE; |
252b5132 RH |
2524 | } |
2525 | ||
2526 | if (strlen (h->root.root.string) <= SYMNMLEN) | |
2527 | strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); | |
2528 | else | |
2529 | { | |
b34976b6 | 2530 | bfd_boolean hash; |
252b5132 RH |
2531 | bfd_size_type indx; |
2532 | ||
b34976b6 | 2533 | hash = TRUE; |
252b5132 | 2534 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 2535 | hash = FALSE; |
252b5132 | 2536 | indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash, |
b34976b6 | 2537 | FALSE); |
252b5132 RH |
2538 | if (indx == (bfd_size_type) -1) |
2539 | { | |
b34976b6 AM |
2540 | finfo->failed = TRUE; |
2541 | return FALSE; | |
252b5132 RH |
2542 | } |
2543 | isym._n._n_n._n_zeroes = 0; | |
2544 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
2545 | } | |
2546 | ||
2547 | isym.n_sclass = h->class; | |
2548 | isym.n_type = h->type; | |
2549 | ||
2550 | if (isym.n_sclass == C_NULL) | |
2551 | isym.n_sclass = C_EXT; | |
2552 | ||
2553 | /* If doing task linking and this is the pass where we convert | |
2554 | defined globals to statics, then do that conversion now. If the | |
2555 | symbol is not being converted, just ignore it and it will be | |
e4202681 | 2556 | output during a later pass. */ |
252b5132 RH |
2557 | if (finfo->global_to_static) |
2558 | { | |
e4202681 | 2559 | if (! IS_EXTERNAL (output_bfd, isym)) |
b34976b6 | 2560 | return TRUE; |
e4202681 | 2561 | |
252b5132 RH |
2562 | isym.n_sclass = C_STAT; |
2563 | } | |
2564 | ||
5c4491d3 | 2565 | /* When a weak symbol is not overridden by a strong one, |
e4202681 | 2566 | turn it into an external symbol when not building a |
1049f94e | 2567 | shared or relocatable object. */ |
e4202681 | 2568 | if (! finfo->info->shared |
1049f94e | 2569 | && ! finfo->info->relocatable |
e4202681 NC |
2570 | && IS_WEAK_EXTERNAL (finfo->output_bfd, isym)) |
2571 | isym.n_sclass = C_EXT; | |
2572 | ||
252b5132 | 2573 | isym.n_numaux = h->numaux; |
244148ad | 2574 | |
8b956130 | 2575 | bfd_coff_swap_sym_out (output_bfd, &isym, finfo->outsyms); |
252b5132 RH |
2576 | |
2577 | symesz = bfd_coff_symesz (output_bfd); | |
2578 | ||
dc810e39 AM |
2579 | pos = obj_sym_filepos (output_bfd); |
2580 | pos += obj_raw_syment_count (output_bfd) * symesz; | |
2581 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2582 | || bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz) | |
252b5132 | 2583 | { |
b34976b6 AM |
2584 | finfo->failed = TRUE; |
2585 | return FALSE; | |
252b5132 RH |
2586 | } |
2587 | ||
2588 | h->indx = obj_raw_syment_count (output_bfd); | |
2589 | ||
2590 | ++obj_raw_syment_count (output_bfd); | |
2591 | ||
2c546cd8 ILT |
2592 | /* Write out any associated aux entries. Most of the aux entries |
2593 | will have been modified in _bfd_coff_link_input_bfd. We have to | |
2594 | handle section aux entries here, now that we have the final | |
2595 | relocation and line number counts. */ | |
252b5132 RH |
2596 | for (i = 0; i < isym.n_numaux; i++) |
2597 | { | |
2c546cd8 ILT |
2598 | union internal_auxent *auxp; |
2599 | ||
2600 | auxp = h->aux + i; | |
2601 | ||
2602 | /* Look for a section aux entry here using the same tests that | |
2603 | coff_swap_aux_out uses. */ | |
2604 | if (i == 0 | |
2605 | && (isym.n_sclass == C_STAT | |
2606 | || isym.n_sclass == C_HIDDEN) | |
2607 | && isym.n_type == T_NULL | |
2608 | && (h->root.type == bfd_link_hash_defined | |
2609 | || h->root.type == bfd_link_hash_defweak)) | |
2610 | { | |
2611 | asection *sec; | |
2612 | ||
2613 | sec = h->root.u.def.section->output_section; | |
2614 | if (sec != NULL) | |
2615 | { | |
eea6121a | 2616 | auxp->x_scn.x_scnlen = sec->size; |
2c546cd8 ILT |
2617 | |
2618 | /* For PE, an overflow on the final link reportedly does | |
2619 | not matter. FIXME: Why not? */ | |
2c546cd8 ILT |
2620 | if (sec->reloc_count > 0xffff |
2621 | && (! obj_pe (output_bfd) | |
1049f94e | 2622 | || finfo->info->relocatable)) |
2c546cd8 ILT |
2623 | (*_bfd_error_handler) |
2624 | (_("%s: %s: reloc overflow: 0x%lx > 0xffff"), | |
2625 | bfd_get_filename (output_bfd), | |
2626 | bfd_get_section_name (output_bfd, sec), | |
2627 | sec->reloc_count); | |
2628 | ||
2629 | if (sec->lineno_count > 0xffff | |
2630 | && (! obj_pe (output_bfd) | |
1049f94e | 2631 | || finfo->info->relocatable)) |
2c546cd8 ILT |
2632 | (*_bfd_error_handler) |
2633 | (_("%s: warning: %s: line number overflow: 0x%lx > 0xffff"), | |
2634 | bfd_get_filename (output_bfd), | |
2635 | bfd_get_section_name (output_bfd, sec), | |
2636 | sec->lineno_count); | |
2637 | ||
2638 | auxp->x_scn.x_nreloc = sec->reloc_count; | |
2639 | auxp->x_scn.x_nlinno = sec->lineno_count; | |
2640 | auxp->x_scn.x_checksum = 0; | |
2641 | auxp->x_scn.x_associated = 0; | |
2642 | auxp->x_scn.x_comdat = 0; | |
2643 | } | |
2644 | } | |
2645 | ||
8b956130 | 2646 | bfd_coff_swap_aux_out (output_bfd, auxp, isym.n_type, |
dc810e39 | 2647 | isym.n_sclass, (int) i, isym.n_numaux, |
8b956130 | 2648 | finfo->outsyms); |
dc810e39 | 2649 | if (bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz) |
252b5132 | 2650 | { |
b34976b6 AM |
2651 | finfo->failed = TRUE; |
2652 | return FALSE; | |
252b5132 RH |
2653 | } |
2654 | ++obj_raw_syment_count (output_bfd); | |
2655 | } | |
2656 | ||
b34976b6 | 2657 | return TRUE; |
252b5132 RH |
2658 | } |
2659 | ||
2660 | /* Write out task global symbols, converting them to statics. Called | |
2661 | via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do | |
244148ad | 2662 | the dirty work, if the symbol we are processing needs conversion. */ |
252b5132 | 2663 | |
b34976b6 | 2664 | bfd_boolean |
8b956130 | 2665 | _bfd_coff_write_task_globals (struct coff_link_hash_entry *h, void *data) |
252b5132 RH |
2666 | { |
2667 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
b34976b6 AM |
2668 | bfd_boolean rtnval = TRUE; |
2669 | bfd_boolean save_global_to_static; | |
252b5132 | 2670 | |
e92d460e AM |
2671 | if (h->root.type == bfd_link_hash_warning) |
2672 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2673 | ||
252b5132 RH |
2674 | if (h->indx < 0) |
2675 | { | |
2676 | switch (h->root.type) | |
2677 | { | |
2678 | case bfd_link_hash_defined: | |
2679 | case bfd_link_hash_defweak: | |
2680 | save_global_to_static = finfo->global_to_static; | |
b34976b6 | 2681 | finfo->global_to_static = TRUE; |
252b5132 RH |
2682 | rtnval = _bfd_coff_write_global_sym (h, data); |
2683 | finfo->global_to_static = save_global_to_static; | |
2684 | break; | |
2685 | default: | |
2686 | break; | |
2687 | } | |
2688 | } | |
2689 | return (rtnval); | |
2690 | } | |
2691 | ||
2692 | /* Handle a link order which is supposed to generate a reloc. */ | |
2693 | ||
b34976b6 | 2694 | bfd_boolean |
8b956130 NC |
2695 | _bfd_coff_reloc_link_order (bfd *output_bfd, |
2696 | struct coff_final_link_info *finfo, | |
2697 | asection *output_section, | |
2698 | struct bfd_link_order *link_order) | |
252b5132 RH |
2699 | { |
2700 | reloc_howto_type *howto; | |
2701 | struct internal_reloc *irel; | |
2702 | struct coff_link_hash_entry **rel_hash_ptr; | |
2703 | ||
2704 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); | |
2705 | if (howto == NULL) | |
2706 | { | |
2707 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2708 | return FALSE; |
252b5132 RH |
2709 | } |
2710 | ||
2711 | if (link_order->u.reloc.p->addend != 0) | |
2712 | { | |
2713 | bfd_size_type size; | |
2714 | bfd_byte *buf; | |
2715 | bfd_reloc_status_type rstat; | |
b34976b6 | 2716 | bfd_boolean ok; |
dc810e39 | 2717 | file_ptr loc; |
252b5132 RH |
2718 | |
2719 | size = bfd_get_reloc_size (howto); | |
8b956130 | 2720 | buf = bfd_zmalloc (size); |
252b5132 | 2721 | if (buf == NULL) |
b34976b6 | 2722 | return FALSE; |
252b5132 RH |
2723 | |
2724 | rstat = _bfd_relocate_contents (howto, output_bfd, | |
dc810e39 AM |
2725 | (bfd_vma) link_order->u.reloc.p->addend,\ |
2726 | buf); | |
252b5132 RH |
2727 | switch (rstat) |
2728 | { | |
2729 | case bfd_reloc_ok: | |
2730 | break; | |
2731 | default: | |
2732 | case bfd_reloc_outofrange: | |
2733 | abort (); | |
2734 | case bfd_reloc_overflow: | |
2735 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
dfeffb9f | 2736 | (finfo->info, NULL, |
252b5132 RH |
2737 | (link_order->type == bfd_section_reloc_link_order |
2738 | ? bfd_section_name (output_bfd, | |
2739 | link_order->u.reloc.p->u.section) | |
2740 | : link_order->u.reloc.p->u.name), | |
2741 | howto->name, link_order->u.reloc.p->addend, | |
2742 | (bfd *) NULL, (asection *) NULL, (bfd_vma) 0))) | |
2743 | { | |
2744 | free (buf); | |
b34976b6 | 2745 | return FALSE; |
252b5132 RH |
2746 | } |
2747 | break; | |
2748 | } | |
dc810e39 | 2749 | loc = link_order->offset * bfd_octets_per_byte (output_bfd); |
8b956130 | 2750 | ok = bfd_set_section_contents (output_bfd, output_section, buf, |
dc810e39 | 2751 | loc, size); |
252b5132 RH |
2752 | free (buf); |
2753 | if (! ok) | |
b34976b6 | 2754 | return FALSE; |
252b5132 RH |
2755 | } |
2756 | ||
2757 | /* Store the reloc information in the right place. It will get | |
2758 | swapped and written out at the end of the final_link routine. */ | |
252b5132 RH |
2759 | irel = (finfo->section_info[output_section->target_index].relocs |
2760 | + output_section->reloc_count); | |
2761 | rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes | |
2762 | + output_section->reloc_count); | |
2763 | ||
2764 | memset (irel, 0, sizeof (struct internal_reloc)); | |
2765 | *rel_hash_ptr = NULL; | |
2766 | ||
2767 | irel->r_vaddr = output_section->vma + link_order->offset; | |
2768 | ||
2769 | if (link_order->type == bfd_section_reloc_link_order) | |
2770 | { | |
2771 | /* We need to somehow locate a symbol in the right section. The | |
2772 | symbol must either have a value of zero, or we must adjust | |
2773 | the addend by the value of the symbol. FIXME: Write this | |
2774 | when we need it. The old linker couldn't handle this anyhow. */ | |
2775 | abort (); | |
2776 | *rel_hash_ptr = NULL; | |
2777 | irel->r_symndx = 0; | |
2778 | } | |
2779 | else | |
2780 | { | |
2781 | struct coff_link_hash_entry *h; | |
2782 | ||
2783 | h = ((struct coff_link_hash_entry *) | |
2784 | bfd_wrapped_link_hash_lookup (output_bfd, finfo->info, | |
2785 | link_order->u.reloc.p->u.name, | |
b34976b6 | 2786 | FALSE, FALSE, TRUE)); |
252b5132 RH |
2787 | if (h != NULL) |
2788 | { | |
2789 | if (h->indx >= 0) | |
2790 | irel->r_symndx = h->indx; | |
2791 | else | |
2792 | { | |
2793 | /* Set the index to -2 to force this symbol to get | |
2794 | written out. */ | |
2795 | h->indx = -2; | |
2796 | *rel_hash_ptr = h; | |
2797 | irel->r_symndx = 0; | |
2798 | } | |
2799 | } | |
2800 | else | |
2801 | { | |
2802 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2803 | (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL, | |
2804 | (asection *) NULL, (bfd_vma) 0))) | |
b34976b6 | 2805 | return FALSE; |
252b5132 RH |
2806 | irel->r_symndx = 0; |
2807 | } | |
2808 | } | |
2809 | ||
2810 | /* FIXME: Is this always right? */ | |
2811 | irel->r_type = howto->type; | |
2812 | ||
2813 | /* r_size is only used on the RS/6000, which needs its own linker | |
2814 | routines anyhow. r_extern is only used for ECOFF. */ | |
2815 | ||
2816 | /* FIXME: What is the right value for r_offset? Is zero OK? */ | |
252b5132 RH |
2817 | ++output_section->reloc_count; |
2818 | ||
b34976b6 | 2819 | return TRUE; |
252b5132 RH |
2820 | } |
2821 | ||
2822 | /* A basic reloc handling routine which may be used by processors with | |
2823 | simple relocs. */ | |
2824 | ||
b34976b6 | 2825 | bfd_boolean |
8b956130 NC |
2826 | _bfd_coff_generic_relocate_section (bfd *output_bfd, |
2827 | struct bfd_link_info *info, | |
2828 | bfd *input_bfd, | |
2829 | asection *input_section, | |
2830 | bfd_byte *contents, | |
2831 | struct internal_reloc *relocs, | |
2832 | struct internal_syment *syms, | |
2833 | asection **sections) | |
252b5132 RH |
2834 | { |
2835 | struct internal_reloc *rel; | |
2836 | struct internal_reloc *relend; | |
2837 | ||
2838 | rel = relocs; | |
2839 | relend = rel + input_section->reloc_count; | |
2840 | for (; rel < relend; rel++) | |
2841 | { | |
2842 | long symndx; | |
2843 | struct coff_link_hash_entry *h; | |
2844 | struct internal_syment *sym; | |
2845 | bfd_vma addend; | |
2846 | bfd_vma val; | |
2847 | reloc_howto_type *howto; | |
2848 | bfd_reloc_status_type rstat; | |
2849 | ||
2850 | symndx = rel->r_symndx; | |
2851 | ||
2852 | if (symndx == -1) | |
2853 | { | |
2854 | h = NULL; | |
2855 | sym = NULL; | |
2856 | } | |
75987f83 ILT |
2857 | else if (symndx < 0 |
2858 | || (unsigned long) symndx >= obj_raw_syment_count (input_bfd)) | |
2859 | { | |
2860 | (*_bfd_error_handler) | |
d003868e | 2861 | ("%B: illegal symbol index %ld in relocs", input_bfd, symndx); |
b34976b6 | 2862 | return FALSE; |
75987f83 | 2863 | } |
252b5132 | 2864 | else |
244148ad | 2865 | { |
252b5132 RH |
2866 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
2867 | sym = syms + symndx; | |
2868 | } | |
2869 | ||
2870 | /* COFF treats common symbols in one of two ways. Either the | |
2871 | size of the symbol is included in the section contents, or it | |
2872 | is not. We assume that the size is not included, and force | |
2873 | the rtype_to_howto function to adjust the addend as needed. */ | |
252b5132 RH |
2874 | if (sym != NULL && sym->n_scnum != 0) |
2875 | addend = - sym->n_value; | |
2876 | else | |
2877 | addend = 0; | |
2878 | ||
252b5132 RH |
2879 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
2880 | sym, &addend); | |
2881 | if (howto == NULL) | |
b34976b6 | 2882 | return FALSE; |
252b5132 | 2883 | |
1049f94e | 2884 | /* If we are doing a relocatable link, then we can just ignore |
252b5132 | 2885 | a PC relative reloc that is pcrel_offset. It will already |
1049f94e | 2886 | have the correct value. If this is not a relocatable link, |
252b5132 RH |
2887 | then we should ignore the symbol value. */ |
2888 | if (howto->pc_relative && howto->pcrel_offset) | |
2889 | { | |
1049f94e | 2890 | if (info->relocatable) |
252b5132 RH |
2891 | continue; |
2892 | if (sym != NULL && sym->n_scnum != 0) | |
2893 | addend += sym->n_value; | |
2894 | } | |
2895 | ||
2896 | val = 0; | |
2897 | ||
2898 | if (h == NULL) | |
2899 | { | |
2900 | asection *sec; | |
2901 | ||
2902 | if (symndx == -1) | |
2903 | { | |
2904 | sec = bfd_abs_section_ptr; | |
2905 | val = 0; | |
2906 | } | |
2907 | else | |
2908 | { | |
2909 | sec = sections[symndx]; | |
2910 | val = (sec->output_section->vma | |
2911 | + sec->output_offset | |
2912 | + sym->n_value); | |
2913 | if (! obj_pe (input_bfd)) | |
2914 | val -= sec->vma; | |
2915 | } | |
2916 | } | |
2917 | else | |
2918 | { | |
2919 | if (h->root.type == bfd_link_hash_defined | |
2920 | || h->root.type == bfd_link_hash_defweak) | |
2921 | { | |
c87db184 | 2922 | /* Defined weak symbols are a GNU extension. */ |
252b5132 RH |
2923 | asection *sec; |
2924 | ||
2925 | sec = h->root.u.def.section; | |
2926 | val = (h->root.u.def.value | |
2927 | + sec->output_section->vma | |
2928 | + sec->output_offset); | |
c87db184 | 2929 | } |
252b5132 | 2930 | |
bc7a577d | 2931 | else if (h->root.type == bfd_link_hash_undefweak) |
c87db184 CF |
2932 | { |
2933 | if (h->class == C_NT_WEAK && h->numaux == 1) | |
2934 | { | |
2935 | /* See _Microsoft Portable Executable and Common Object | |
0c429e07 NC |
2936 | File Format Specification_, section 5.5.3. |
2937 | Note that weak symbols without aux records are a GNU | |
2938 | extension. | |
2939 | FIXME: All weak externals are treated as having | |
2940 | characteristics IMAGE_WEAK_EXTERN_SEARCH_LIBRARY (2). | |
2941 | There are no known uses of the other two types of | |
2942 | weak externals. */ | |
c87db184 CF |
2943 | asection *sec; |
2944 | struct coff_link_hash_entry *h2 = | |
2945 | input_bfd->tdata.coff_obj_data->sym_hashes[ | |
2946 | h->aux->x_sym.x_tagndx.l]; | |
2947 | ||
0c429e07 NC |
2948 | if (!h2 || h2->root.type == bfd_link_hash_undefined) |
2949 | { | |
2950 | sec = bfd_abs_section_ptr; | |
2951 | val = 0; | |
2952 | } | |
2953 | else | |
2954 | { | |
2955 | sec = h2->root.u.def.section; | |
2956 | val = h2->root.u.def.value | |
2957 | + sec->output_section->vma + sec->output_offset; | |
2958 | } | |
c87db184 CF |
2959 | } |
2960 | else | |
0c429e07 | 2961 | /* This is a GNU extension. */ |
c87db184 CF |
2962 | val = 0; |
2963 | } | |
bc7a577d | 2964 | |
1049f94e | 2965 | else if (! info->relocatable) |
252b5132 RH |
2966 | { |
2967 | if (! ((*info->callbacks->undefined_symbol) | |
2968 | (info, h->root.root.string, input_bfd, input_section, | |
b34976b6 AM |
2969 | rel->r_vaddr - input_section->vma, TRUE))) |
2970 | return FALSE; | |
252b5132 RH |
2971 | } |
2972 | } | |
2973 | ||
2974 | if (info->base_file) | |
2975 | { | |
244148ad | 2976 | /* Emit a reloc if the backend thinks it needs it. */ |
252b5132 RH |
2977 | if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto)) |
2978 | { | |
2979 | /* Relocation to a symbol in a section which isn't | |
2980 | absolute. We output the address here to a file. | |
2981 | This file is then read by dlltool when generating the | |
2982 | reloc section. Note that the base file is not | |
2983 | portable between systems. We write out a long here, | |
2984 | and dlltool reads in a long. */ | |
244148ad KH |
2985 | long addr = (rel->r_vaddr |
2986 | - input_section->vma | |
2987 | + input_section->output_offset | |
252b5132 RH |
2988 | + input_section->output_section->vma); |
2989 | if (coff_data (output_bfd)->pe) | |
2990 | addr -= pe_data(output_bfd)->pe_opthdr.ImageBase; | |
2991 | if (fwrite (&addr, 1, sizeof (long), (FILE *) info->base_file) | |
2992 | != sizeof (long)) | |
2993 | { | |
2994 | bfd_set_error (bfd_error_system_call); | |
b34976b6 | 2995 | return FALSE; |
252b5132 RH |
2996 | } |
2997 | } | |
2998 | } | |
244148ad | 2999 | |
252b5132 RH |
3000 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3001 | contents, | |
3002 | rel->r_vaddr - input_section->vma, | |
3003 | val, addend); | |
3004 | ||
3005 | switch (rstat) | |
3006 | { | |
3007 | default: | |
3008 | abort (); | |
3009 | case bfd_reloc_ok: | |
3010 | break; | |
3011 | case bfd_reloc_outofrange: | |
3012 | (*_bfd_error_handler) | |
d003868e AM |
3013 | (_("%B: bad reloc address 0x%lx in section `%A'"), |
3014 | input_bfd, input_section, (unsigned long) rel->r_vaddr); | |
b34976b6 | 3015 | return FALSE; |
252b5132 RH |
3016 | case bfd_reloc_overflow: |
3017 | { | |
3018 | const char *name; | |
3019 | char buf[SYMNMLEN + 1]; | |
3020 | ||
3021 | if (symndx == -1) | |
3022 | name = "*ABS*"; | |
3023 | else if (h != NULL) | |
dfeffb9f | 3024 | name = NULL; |
252b5132 RH |
3025 | else |
3026 | { | |
3027 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
3028 | if (name == NULL) | |
b34976b6 | 3029 | return FALSE; |
252b5132 RH |
3030 | } |
3031 | ||
3032 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
3033 | (info, (h ? &h->root : NULL), name, howto->name, |
3034 | (bfd_vma) 0, input_bfd, input_section, | |
3035 | rel->r_vaddr - input_section->vma))) | |
b34976b6 | 3036 | return FALSE; |
252b5132 RH |
3037 | } |
3038 | } | |
3039 | } | |
b34976b6 | 3040 | return TRUE; |
252b5132 | 3041 | } |