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252b5132 | 1 | /* COFF specific linker code. |
fd67aa11 | 2 | Copyright (C) 1994-2024 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Ian Lance Taylor, Cygnus Support. |
4 | ||
8b956130 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
8b956130 NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
8b956130 | 10 | (at your option) any later version. |
252b5132 | 11 | |
8b956130 NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
8b956130 NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | /* This file contains the COFF backend linker code. */ | |
23 | ||
252b5132 | 24 | #include "sysdep.h" |
3db64b00 | 25 | #include "bfd.h" |
252b5132 RH |
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 | |
0a1b45a2 AM |
32 | static bool coff_link_add_object_symbols (bfd *, struct bfd_link_info *); |
33 | static bool coff_link_check_archive_element | |
13e570f8 | 34 | (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, |
0a1b45a2 AM |
35 | bool *); |
36 | static bool coff_link_add_symbols (bfd *, struct bfd_link_info *); | |
252b5132 | 37 | |
b34976b6 | 38 | /* Return TRUE if SYM is a weak, external symbol. */ |
e4202681 NC |
39 | #define IS_WEAK_EXTERNAL(abfd, sym) \ |
40 | ((sym).n_sclass == C_WEAKEXT \ | |
41 | || (obj_pe (abfd) && (sym).n_sclass == C_NT_WEAK)) | |
42 | ||
b34976b6 | 43 | /* Return TRUE if SYM is an external symbol. */ |
e4202681 NC |
44 | #define IS_EXTERNAL(abfd, sym) \ |
45 | ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym)) | |
46 | ||
b2d638c7 ILT |
47 | /* Define macros so that the ISFCN, et. al., macros work correctly. |
48 | These macros are defined in include/coff/internal.h in terms of | |
49 | N_TMASK, etc. These definitions require a user to define local | |
50 | variables with the appropriate names, and with values from the | |
51 | coff_data (abfd) structure. */ | |
52 | ||
53 | #define N_TMASK n_tmask | |
54 | #define N_BTSHFT n_btshft | |
55 | #define N_BTMASK n_btmask | |
56 | ||
252b5132 RH |
57 | /* Create an entry in a COFF linker hash table. */ |
58 | ||
59 | struct bfd_hash_entry * | |
8b956130 NC |
60 | _bfd_coff_link_hash_newfunc (struct bfd_hash_entry *entry, |
61 | struct bfd_hash_table *table, | |
62 | const char *string) | |
252b5132 RH |
63 | { |
64 | struct coff_link_hash_entry *ret = (struct coff_link_hash_entry *) entry; | |
65 | ||
66 | /* Allocate the structure if it has not already been allocated by a | |
67 | subclass. */ | |
68 | if (ret == (struct coff_link_hash_entry *) NULL) | |
69 | ret = ((struct coff_link_hash_entry *) | |
70 | bfd_hash_allocate (table, sizeof (struct coff_link_hash_entry))); | |
71 | if (ret == (struct coff_link_hash_entry *) NULL) | |
72 | return (struct bfd_hash_entry *) ret; | |
73 | ||
74 | /* Call the allocation method of the superclass. */ | |
75 | ret = ((struct coff_link_hash_entry *) | |
76 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
77 | table, string)); | |
78 | if (ret != (struct coff_link_hash_entry *) NULL) | |
79 | { | |
80 | /* Set local fields. */ | |
81 | ret->indx = -1; | |
82 | ret->type = T_NULL; | |
96d56e9f | 83 | ret->symbol_class = C_NULL; |
252b5132 RH |
84 | ret->numaux = 0; |
85 | ret->auxbfd = NULL; | |
86 | ret->aux = NULL; | |
87 | } | |
88 | ||
89 | return (struct bfd_hash_entry *) ret; | |
90 | } | |
91 | ||
80d4e113 LB |
92 | struct bfd_hash_entry * |
93 | _decoration_hash_newfunc (struct bfd_hash_entry *entry, | |
94 | struct bfd_hash_table *table, | |
95 | const char *string) | |
96 | { | |
97 | struct decoration_hash_entry *ret = (struct decoration_hash_entry *) entry; | |
98 | ||
99 | /* Allocate the structure if it has not already been allocated by a | |
100 | subclass. */ | |
101 | if (ret == NULL) | |
102 | { | |
103 | ret = (struct decoration_hash_entry *) | |
104 | bfd_hash_allocate (table, sizeof (struct decoration_hash_entry)); | |
105 | if (ret == NULL) | |
106 | return NULL; | |
107 | } | |
108 | ||
109 | /* Call the allocation method of the superclass. */ | |
110 | ret = (struct decoration_hash_entry *) | |
111 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string); | |
112 | if (ret != NULL) | |
113 | { | |
114 | ret->decorated_link = NULL; | |
115 | } | |
116 | ||
117 | return (struct bfd_hash_entry *) ret; | |
118 | } | |
119 | ||
252b5132 RH |
120 | /* Initialize a COFF linker hash table. */ |
121 | ||
0a1b45a2 | 122 | bool |
8b956130 NC |
123 | _bfd_coff_link_hash_table_init (struct coff_link_hash_table *table, |
124 | bfd *abfd, | |
125 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
126 | struct bfd_hash_table *, | |
66eb6687 AM |
127 | const char *), |
128 | unsigned int entsize) | |
252b5132 | 129 | { |
3722b82f | 130 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
80d4e113 LB |
131 | |
132 | return bfd_hash_table_init (&table->decoration_hash, | |
133 | _decoration_hash_newfunc, | |
134 | sizeof (struct decoration_hash_entry)) | |
135 | &&_bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); | |
252b5132 RH |
136 | } |
137 | ||
138 | /* Create a COFF linker hash table. */ | |
139 | ||
140 | struct bfd_link_hash_table * | |
8b956130 | 141 | _bfd_coff_link_hash_table_create (bfd *abfd) |
252b5132 RH |
142 | { |
143 | struct coff_link_hash_table *ret; | |
986f0783 | 144 | size_t amt = sizeof (struct coff_link_hash_table); |
252b5132 | 145 | |
a50b1753 | 146 | ret = (struct coff_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
147 | if (ret == NULL) |
148 | return NULL; | |
8b956130 | 149 | |
252b5132 | 150 | if (! _bfd_coff_link_hash_table_init (ret, abfd, |
66eb6687 AM |
151 | _bfd_coff_link_hash_newfunc, |
152 | sizeof (struct coff_link_hash_entry))) | |
252b5132 | 153 | { |
e2d34d7d | 154 | free (ret); |
252b5132 RH |
155 | return (struct bfd_link_hash_table *) NULL; |
156 | } | |
157 | return &ret->root; | |
158 | } | |
159 | ||
160 | /* Create an entry in a COFF debug merge hash table. */ | |
161 | ||
162 | struct bfd_hash_entry * | |
8b956130 NC |
163 | _bfd_coff_debug_merge_hash_newfunc (struct bfd_hash_entry *entry, |
164 | struct bfd_hash_table *table, | |
165 | const char *string) | |
252b5132 RH |
166 | { |
167 | struct coff_debug_merge_hash_entry *ret = | |
168 | (struct coff_debug_merge_hash_entry *) entry; | |
169 | ||
170 | /* Allocate the structure if it has not already been allocated by a | |
171 | subclass. */ | |
172 | if (ret == (struct coff_debug_merge_hash_entry *) NULL) | |
173 | ret = ((struct coff_debug_merge_hash_entry *) | |
174 | bfd_hash_allocate (table, | |
175 | sizeof (struct coff_debug_merge_hash_entry))); | |
176 | if (ret == (struct coff_debug_merge_hash_entry *) NULL) | |
177 | return (struct bfd_hash_entry *) ret; | |
178 | ||
179 | /* Call the allocation method of the superclass. */ | |
180 | ret = ((struct coff_debug_merge_hash_entry *) | |
181 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
182 | if (ret != (struct coff_debug_merge_hash_entry *) NULL) | |
183 | { | |
184 | /* Set local fields. */ | |
185 | ret->types = NULL; | |
186 | } | |
187 | ||
188 | return (struct bfd_hash_entry *) ret; | |
189 | } | |
190 | ||
191 | /* Given a COFF BFD, add symbols to the global hash table as | |
192 | appropriate. */ | |
193 | ||
0a1b45a2 | 194 | bool |
8b956130 | 195 | _bfd_coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
196 | { |
197 | switch (bfd_get_format (abfd)) | |
198 | { | |
199 | case bfd_object: | |
200 | return coff_link_add_object_symbols (abfd, info); | |
201 | case bfd_archive: | |
8b956130 NC |
202 | return _bfd_generic_link_add_archive_symbols |
203 | (abfd, info, coff_link_check_archive_element); | |
252b5132 RH |
204 | default: |
205 | bfd_set_error (bfd_error_wrong_format); | |
0a1b45a2 | 206 | return false; |
252b5132 RH |
207 | } |
208 | } | |
209 | ||
210 | /* Add symbols from a COFF object file. */ | |
211 | ||
0a1b45a2 | 212 | static bool |
8b956130 | 213 | coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
214 | { |
215 | if (! _bfd_coff_get_external_symbols (abfd)) | |
0a1b45a2 | 216 | return false; |
252b5132 | 217 | if (! coff_link_add_symbols (abfd, info)) |
0a1b45a2 | 218 | return false; |
252b5132 | 219 | |
8b956130 NC |
220 | if (! info->keep_memory |
221 | && ! _bfd_coff_free_symbols (abfd)) | |
0a1b45a2 | 222 | return false; |
252b5132 | 223 | |
0a1b45a2 | 224 | return true; |
252b5132 RH |
225 | } |
226 | ||
8b956130 NC |
227 | /* Check a single archive element to see if we need to include it in |
228 | the link. *PNEEDED is set according to whether this element is | |
229 | needed in the link or not. This is called via | |
230 | _bfd_generic_link_add_archive_symbols. */ | |
231 | ||
0a1b45a2 | 232 | static bool |
8b956130 NC |
233 | coff_link_check_archive_element (bfd *abfd, |
234 | struct bfd_link_info *info, | |
13e570f8 AM |
235 | struct bfd_link_hash_entry *h, |
236 | const char *name, | |
0a1b45a2 | 237 | bool *pneeded) |
8b956130 | 238 | { |
0a1b45a2 | 239 | *pneeded = false; |
5d3236ee | 240 | |
10556cdc NC |
241 | /* PR 22369 - Skip non COFF objects in the archive. */ |
242 | if (! bfd_family_coff (abfd)) | |
0a1b45a2 | 243 | return true; |
10556cdc | 244 | |
13e570f8 AM |
245 | /* We are only interested in symbols that are currently undefined. |
246 | If a symbol is currently known to be common, COFF linkers do not | |
247 | bring in an object file which defines it. */ | |
248 | if (h->type != bfd_link_hash_undefined) | |
0a1b45a2 | 249 | return true; |
8b956130 | 250 | |
75cfe082 AM |
251 | /* If the archive element has already been loaded then one |
252 | of the symbols defined by that element might have been | |
253 | made undefined due to being in a discarded section. */ | |
254 | if (((struct coff_link_hash_entry *) h)->indx == -3) | |
0a1b45a2 | 255 | return true; |
75cfe082 | 256 | |
b95a0a31 | 257 | /* Include this element? */ |
13e570f8 | 258 | if (!(*info->callbacks->add_archive_element) (info, abfd, name, &abfd)) |
0a1b45a2 AM |
259 | return true; |
260 | *pneeded = true; | |
8b956130 | 261 | |
0f4a61b4 | 262 | return bfd_link_add_symbols (abfd, info); |
8b956130 NC |
263 | } |
264 | ||
252b5132 RH |
265 | /* Add all the symbols from an object file to the hash table. */ |
266 | ||
0a1b45a2 | 267 | static bool |
8b956130 NC |
268 | coff_link_add_symbols (bfd *abfd, |
269 | struct bfd_link_info *info) | |
252b5132 | 270 | { |
b2d638c7 ILT |
271 | unsigned int n_tmask = coff_data (abfd)->local_n_tmask; |
272 | unsigned int n_btshft = coff_data (abfd)->local_n_btshft; | |
273 | unsigned int n_btmask = coff_data (abfd)->local_n_btmask; | |
0a1b45a2 AM |
274 | bool keep_syms; |
275 | bool default_copy; | |
252b5132 RH |
276 | bfd_size_type symcount; |
277 | struct coff_link_hash_entry **sym_hash; | |
278 | bfd_size_type symesz; | |
279 | bfd_byte *esym; | |
280 | bfd_byte *esym_end; | |
dc810e39 | 281 | bfd_size_type amt; |
252b5132 | 282 | |
d63388ff MS |
283 | symcount = obj_raw_syment_count (abfd); |
284 | ||
285 | if (symcount == 0) | |
0a1b45a2 | 286 | return true; /* Nothing to do. */ |
d63388ff | 287 | |
252b5132 RH |
288 | /* Keep the symbols during this function, in case the linker needs |
289 | to read the generic symbols in order to report an error message. */ | |
290 | keep_syms = obj_coff_keep_syms (abfd); | |
0a1b45a2 | 291 | obj_coff_keep_syms (abfd) = true; |
252b5132 | 292 | |
252b5132 | 293 | if (info->keep_memory) |
0a1b45a2 | 294 | default_copy = false; |
252b5132 | 295 | else |
0a1b45a2 | 296 | default_copy = true; |
252b5132 | 297 | |
252b5132 RH |
298 | /* We keep a list of the linker hash table entries that correspond |
299 | to particular symbols. */ | |
dc810e39 | 300 | amt = symcount * sizeof (struct coff_link_hash_entry *); |
a50b1753 | 301 | sym_hash = (struct coff_link_hash_entry **) bfd_zalloc (abfd, amt); |
d63388ff | 302 | if (sym_hash == NULL) |
252b5132 RH |
303 | goto error_return; |
304 | obj_coff_sym_hashes (abfd) = sym_hash; | |
252b5132 RH |
305 | |
306 | symesz = bfd_coff_symesz (abfd); | |
307 | BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); | |
308 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
309 | esym_end = esym + symcount * symesz; | |
310 | while (esym < esym_end) | |
311 | { | |
312 | struct internal_syment sym; | |
5d54c628 | 313 | enum coff_symbol_classification classification; |
0a1b45a2 | 314 | bool copy; |
252b5132 | 315 | |
8b956130 | 316 | bfd_coff_swap_sym_in (abfd, esym, &sym); |
252b5132 | 317 | |
5d54c628 ILT |
318 | classification = bfd_coff_classify_symbol (abfd, &sym); |
319 | if (classification != COFF_SYMBOL_LOCAL) | |
252b5132 RH |
320 | { |
321 | const char *name; | |
322 | char buf[SYMNMLEN + 1]; | |
323 | flagword flags; | |
324 | asection *section; | |
325 | bfd_vma value; | |
0a1b45a2 AM |
326 | bool addit; |
327 | bool discarded = false; | |
252b5132 RH |
328 | |
329 | /* This symbol is externally visible. */ | |
330 | ||
331 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
332 | if (name == NULL) | |
333 | goto error_return; | |
334 | ||
335 | /* We must copy the name into memory if we got it from the | |
07d6d2b8 | 336 | syment itself, rather than the string table. */ |
252b5132 RH |
337 | copy = default_copy; |
338 | if (sym._n._n_n._n_zeroes != 0 | |
339 | || sym._n._n_n._n_offset == 0) | |
0a1b45a2 | 340 | copy = true; |
252b5132 RH |
341 | |
342 | value = sym.n_value; | |
343 | ||
5d54c628 | 344 | switch (classification) |
252b5132 | 345 | { |
5d54c628 ILT |
346 | default: |
347 | abort (); | |
348 | ||
349 | case COFF_SYMBOL_GLOBAL: | |
252b5132 RH |
350 | flags = BSF_EXPORT | BSF_GLOBAL; |
351 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
2219ae0b | 352 | if (discarded_section (section)) |
75cfe082 | 353 | { |
0a1b45a2 | 354 | discarded = true; |
75cfe082 AM |
355 | section = bfd_und_section_ptr; |
356 | } | |
2219ae0b | 357 | else if (! obj_pe (abfd)) |
252b5132 | 358 | value -= section->vma; |
c77ec726 | 359 | break; |
5d54c628 ILT |
360 | |
361 | case COFF_SYMBOL_UNDEFINED: | |
362 | flags = 0; | |
363 | section = bfd_und_section_ptr; | |
364 | break; | |
365 | ||
366 | case COFF_SYMBOL_COMMON: | |
367 | flags = BSF_GLOBAL; | |
368 | section = bfd_com_section_ptr; | |
369 | break; | |
370 | ||
371 | case COFF_SYMBOL_PE_SECTION: | |
372 | flags = BSF_SECTION_SYM | BSF_GLOBAL; | |
373 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
2219ae0b L |
374 | if (discarded_section (section)) |
375 | section = bfd_und_section_ptr; | |
5d54c628 | 376 | break; |
252b5132 RH |
377 | } |
378 | ||
e4202681 | 379 | if (IS_WEAK_EXTERNAL (abfd, sym)) |
252b5132 RH |
380 | flags = BSF_WEAK; |
381 | ||
0a1b45a2 | 382 | addit = true; |
7fd9c191 ILT |
383 | |
384 | /* In the PE format, section symbols actually refer to the | |
07d6d2b8 AM |
385 | start of the output section. We handle them specially |
386 | here. */ | |
7fd9c191 ILT |
387 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) |
388 | { | |
389 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
0a1b45a2 | 390 | name, false, copy, false); |
7fd9c191 ILT |
391 | if (*sym_hash != NULL) |
392 | { | |
393 | if (((*sym_hash)->coff_link_hash_flags | |
394 | & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0 | |
395 | && (*sym_hash)->root.type != bfd_link_hash_undefined | |
396 | && (*sym_hash)->root.type != bfd_link_hash_undefweak) | |
4eca0228 | 397 | _bfd_error_handler |
59d08d6c | 398 | (_("warning: symbol `%s' is both section and non-section"), |
7fd9c191 ILT |
399 | name); |
400 | ||
0a1b45a2 | 401 | addit = false; |
7fd9c191 ILT |
402 | } |
403 | } | |
404 | ||
49147fca ILT |
405 | /* The Microsoft Visual C compiler does string pooling by |
406 | hashing the constants to an internal symbol name, and | |
08da05b0 | 407 | relying on the linker comdat support to discard |
49147fca ILT |
408 | duplicate names. However, if one string is a literal and |
409 | one is a data initializer, one will end up in the .data | |
410 | section and one will end up in the .rdata section. The | |
411 | Microsoft linker will combine them into the .data | |
412 | section, which seems to be wrong since it might cause the | |
413 | literal to change. | |
414 | ||
415 | As long as there are no external references to the | |
416 | symbols, which there shouldn't be, we can treat the .data | |
417 | and .rdata instances as separate symbols. The comdat | |
418 | code in the linker will do the appropriate merging. Here | |
419 | we avoid getting a multiple definition error for one of | |
420 | these special symbols. | |
421 | ||
422 | FIXME: I don't think this will work in the case where | |
423 | there are two object files which use the constants as a | |
424 | literal and two object files which use it as a data | |
425 | initializer. One or the other of the second object files | |
426 | is going to wind up with an inappropriate reference. */ | |
427 | if (obj_pe (abfd) | |
428 | && (classification == COFF_SYMBOL_GLOBAL | |
429 | || classification == COFF_SYMBOL_PE_SECTION) | |
271d0fc3 | 430 | && coff_section_data (abfd, section) != NULL |
082b7297 | 431 | && coff_section_data (abfd, section)->comdat != NULL |
08dedd66 | 432 | && startswith (name, "??_") |
082b7297 | 433 | && strcmp (name, coff_section_data (abfd, section)->comdat->name) == 0) |
49147fca ILT |
434 | { |
435 | if (*sym_hash == NULL) | |
436 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
0a1b45a2 | 437 | name, false, copy, false); |
49147fca ILT |
438 | if (*sym_hash != NULL |
439 | && (*sym_hash)->root.type == bfd_link_hash_defined | |
082b7297 L |
440 | && coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat != NULL |
441 | && strcmp (coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat->name, | |
442 | coff_section_data (abfd, section)->comdat->name) == 0) | |
0a1b45a2 | 443 | addit = false; |
49147fca ILT |
444 | } |
445 | ||
7fd9c191 ILT |
446 | if (addit) |
447 | { | |
448 | if (! (bfd_coff_link_add_one_symbol | |
449 | (info, abfd, name, flags, section, value, | |
0a1b45a2 | 450 | (const char *) NULL, copy, false, |
7fd9c191 ILT |
451 | (struct bfd_link_hash_entry **) sym_hash))) |
452 | goto error_return; | |
75cfe082 AM |
453 | |
454 | if (discarded) | |
455 | (*sym_hash)->indx = -3; | |
7fd9c191 ILT |
456 | } |
457 | ||
458 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) | |
459 | (*sym_hash)->coff_link_hash_flags |= | |
460 | COFF_LINK_HASH_PE_SECTION_SYMBOL; | |
252b5132 | 461 | |
2820a0b7 | 462 | /* Limit the alignment of a common symbol to the possible |
07d6d2b8 AM |
463 | alignment of a section. There is no point to permitting |
464 | a higher alignment for a common symbol: we can not | |
465 | guarantee it, and it may cause us to allocate extra space | |
466 | in the common section. */ | |
252b5132 RH |
467 | if (section == bfd_com_section_ptr |
468 | && (*sym_hash)->root.type == bfd_link_hash_common | |
469 | && ((*sym_hash)->root.u.c.p->alignment_power | |
470 | > bfd_coff_default_section_alignment_power (abfd))) | |
471 | (*sym_hash)->root.u.c.p->alignment_power | |
472 | = bfd_coff_default_section_alignment_power (abfd); | |
473 | ||
f13a99db | 474 | if (bfd_get_flavour (info->output_bfd) == bfd_get_flavour (abfd)) |
252b5132 | 475 | { |
5d3aaa74 | 476 | /* If we don't have any symbol information currently in |
07d6d2b8 AM |
477 | the hash table, or if we are looking at a symbol |
478 | definition, then update the symbol class and type in | |
479 | the hash table. */ | |
480 | if (((*sym_hash)->symbol_class == C_NULL | |
481 | && (*sym_hash)->type == T_NULL) | |
482 | || sym.n_scnum != 0 | |
483 | || (sym.n_value != 0 | |
484 | && (*sym_hash)->root.type != bfd_link_hash_defined | |
485 | && (*sym_hash)->root.type != bfd_link_hash_defweak)) | |
486 | { | |
487 | (*sym_hash)->symbol_class = sym.n_sclass; | |
488 | if (sym.n_type != T_NULL) | |
489 | { | |
490 | /* We want to warn if the type changed, but not | |
491 | if it changed from an unspecified type. | |
492 | Testing the whole type byte may work, but the | |
493 | change from (e.g.) a function of unspecified | |
494 | type to function of known type also wants to | |
495 | skip the warning. */ | |
496 | if ((*sym_hash)->type != T_NULL | |
497 | && (*sym_hash)->type != sym.n_type | |
498 | && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type) | |
499 | && (BTYPE ((*sym_hash)->type) == T_NULL | |
500 | || BTYPE (sym.n_type) == T_NULL))) | |
4eca0228 | 501 | _bfd_error_handler |
695344c0 | 502 | /* xgettext: c-format */ |
59d08d6c | 503 | (_("warning: type of symbol `%s' changed" |
871b3ab2 | 504 | " from %d to %d in %pB"), |
c08bb8dd | 505 | name, (*sym_hash)->type, sym.n_type, abfd); |
5d3aaa74 | 506 | |
07d6d2b8 AM |
507 | /* We don't want to change from a meaningful |
508 | base type to a null one, but if we know | |
509 | nothing, take what little we might now know. */ | |
510 | if (BTYPE (sym.n_type) != T_NULL | |
511 | || (*sym_hash)->type == T_NULL) | |
5d3aaa74 | 512 | (*sym_hash)->type = sym.n_type; |
07d6d2b8 AM |
513 | } |
514 | (*sym_hash)->auxbfd = abfd; | |
252b5132 RH |
515 | if (sym.n_numaux != 0) |
516 | { | |
517 | union internal_auxent *alloc; | |
518 | unsigned int i; | |
519 | bfd_byte *eaux; | |
520 | union internal_auxent *iaux; | |
521 | ||
522 | (*sym_hash)->numaux = sym.n_numaux; | |
523 | alloc = ((union internal_auxent *) | |
524 | bfd_hash_allocate (&info->hash->table, | |
525 | (sym.n_numaux | |
526 | * sizeof (*alloc)))); | |
527 | if (alloc == NULL) | |
528 | goto error_return; | |
529 | for (i = 0, eaux = esym + symesz, iaux = alloc; | |
530 | i < sym.n_numaux; | |
531 | i++, eaux += symesz, iaux++) | |
8b956130 | 532 | bfd_coff_swap_aux_in (abfd, eaux, sym.n_type, |
dc810e39 | 533 | sym.n_sclass, (int) i, |
8b956130 | 534 | sym.n_numaux, iaux); |
252b5132 RH |
535 | (*sym_hash)->aux = alloc; |
536 | } | |
537 | } | |
538 | } | |
5d54c628 ILT |
539 | |
540 | if (classification == COFF_SYMBOL_PE_SECTION | |
541 | && (*sym_hash)->numaux != 0) | |
542 | { | |
543 | /* Some PE sections (such as .bss) have a zero size in | |
07d6d2b8 AM |
544 | the section header, but a non-zero size in the AUX |
545 | record. Correct that here. | |
5d54c628 ILT |
546 | |
547 | FIXME: This is not at all the right place to do this. | |
548 | For example, it won't help objdump. This needs to be | |
549 | done when we swap in the section header. */ | |
5d54c628 | 550 | BFD_ASSERT ((*sym_hash)->numaux == 1); |
eea6121a AM |
551 | if (section->size == 0) |
552 | section->size = (*sym_hash)->aux[0].x_scn.x_scnlen; | |
5d54c628 ILT |
553 | |
554 | /* FIXME: We could test whether the section sizes | |
07d6d2b8 AM |
555 | matches the size in the aux entry, but apparently |
556 | that sometimes fails unexpectedly. */ | |
5d54c628 | 557 | } |
252b5132 RH |
558 | } |
559 | ||
560 | esym += (sym.n_numaux + 1) * symesz; | |
561 | sym_hash += sym.n_numaux + 1; | |
562 | } | |
563 | ||
1049f94e | 564 | /* If this is a non-traditional, non-relocatable link, try to |
252b5132 | 565 | optimize the handling of any .stab/.stabstr sections. */ |
0e1862bb | 566 | if (! bfd_link_relocatable (info) |
252b5132 | 567 | && ! info->traditional_format |
f13a99db | 568 | && bfd_get_flavour (info->output_bfd) == bfd_get_flavour (abfd) |
252b5132 RH |
569 | && (info->strip != strip_all && info->strip != strip_debugger)) |
570 | { | |
29ca8dc5 | 571 | asection *stabstr; |
252b5132 | 572 | |
29ca8dc5 | 573 | stabstr = bfd_get_section_by_name (abfd, ".stabstr"); |
252b5132 | 574 | |
29ca8dc5 NS |
575 | if (stabstr != NULL) |
576 | { | |
577 | bfd_size_type string_offset = 0; | |
578 | asection *stab; | |
68ffbac6 | 579 | |
29ca8dc5 | 580 | for (stab = abfd->sections; stab; stab = stab->next) |
08dedd66 | 581 | if (startswith (stab->name, ".stab") |
29ca8dc5 | 582 | && (!stab->name[5] |
a3aa4448 | 583 | || (stab->name[5] == '.' && ISDIGIT (stab->name[6])))) |
252b5132 RH |
584 | { |
585 | struct coff_link_hash_table *table; | |
29ca8dc5 NS |
586 | struct coff_section_tdata *secdata |
587 | = coff_section_data (abfd, stab); | |
68ffbac6 | 588 | |
252b5132 RH |
589 | if (secdata == NULL) |
590 | { | |
dc810e39 | 591 | amt = sizeof (struct coff_section_tdata); |
8b956130 | 592 | stab->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
593 | if (stab->used_by_bfd == NULL) |
594 | goto error_return; | |
595 | secdata = coff_section_data (abfd, stab); | |
596 | } | |
597 | ||
598 | table = coff_hash_table (info); | |
599 | ||
600 | if (! _bfd_link_section_stabs (abfd, &table->stab_info, | |
601 | stab, stabstr, | |
29ca8dc5 NS |
602 | &secdata->stab_info, |
603 | &string_offset)) | |
252b5132 RH |
604 | goto error_return; |
605 | } | |
606 | } | |
607 | } | |
608 | ||
609 | obj_coff_keep_syms (abfd) = keep_syms; | |
610 | ||
0a1b45a2 | 611 | return true; |
252b5132 RH |
612 | |
613 | error_return: | |
614 | obj_coff_keep_syms (abfd) = keep_syms; | |
0a1b45a2 | 615 | return false; |
252b5132 RH |
616 | } |
617 | \f | |
618 | /* Do the final link step. */ | |
619 | ||
0a1b45a2 | 620 | bool |
8b956130 NC |
621 | _bfd_coff_final_link (bfd *abfd, |
622 | struct bfd_link_info *info) | |
252b5132 RH |
623 | { |
624 | bfd_size_type symesz; | |
57402f1e | 625 | struct coff_final_link_info flaginfo; |
0a1b45a2 AM |
626 | bool debug_merge_allocated; |
627 | bool long_section_names; | |
252b5132 RH |
628 | asection *o; |
629 | struct bfd_link_order *p; | |
dc810e39 AM |
630 | bfd_size_type max_sym_count; |
631 | bfd_size_type max_lineno_count; | |
632 | bfd_size_type max_reloc_count; | |
633 | bfd_size_type max_output_reloc_count; | |
634 | bfd_size_type max_contents_size; | |
252b5132 RH |
635 | file_ptr rel_filepos; |
636 | unsigned int relsz; | |
637 | file_ptr line_filepos; | |
638 | unsigned int linesz; | |
639 | bfd *sub; | |
640 | bfd_byte *external_relocs = NULL; | |
641 | char strbuf[STRING_SIZE_SIZE]; | |
dc810e39 | 642 | bfd_size_type amt; |
252b5132 RH |
643 | |
644 | symesz = bfd_coff_symesz (abfd); | |
645 | ||
57402f1e NC |
646 | flaginfo.info = info; |
647 | flaginfo.output_bfd = abfd; | |
648 | flaginfo.strtab = NULL; | |
649 | flaginfo.section_info = NULL; | |
650 | flaginfo.last_file_index = -1; | |
651 | flaginfo.last_bf_index = -1; | |
652 | flaginfo.internal_syms = NULL; | |
653 | flaginfo.sec_ptrs = NULL; | |
654 | flaginfo.sym_indices = NULL; | |
655 | flaginfo.outsyms = NULL; | |
656 | flaginfo.linenos = NULL; | |
657 | flaginfo.contents = NULL; | |
658 | flaginfo.external_relocs = NULL; | |
659 | flaginfo.internal_relocs = NULL; | |
0a1b45a2 AM |
660 | flaginfo.global_to_static = false; |
661 | debug_merge_allocated = false; | |
252b5132 RH |
662 | |
663 | coff_data (abfd)->link_info = info; | |
664 | ||
57402f1e NC |
665 | flaginfo.strtab = _bfd_stringtab_init (); |
666 | if (flaginfo.strtab == NULL) | |
252b5132 RH |
667 | goto error_return; |
668 | ||
57402f1e | 669 | if (! coff_debug_merge_hash_table_init (&flaginfo.debug_merge)) |
252b5132 | 670 | goto error_return; |
0a1b45a2 | 671 | debug_merge_allocated = true; |
252b5132 RH |
672 | |
673 | /* Compute the file positions for all the sections. */ | |
674 | if (! abfd->output_has_begun) | |
675 | { | |
676 | if (! bfd_coff_compute_section_file_positions (abfd)) | |
677 | goto error_return; | |
678 | } | |
679 | ||
680 | /* Count the line numbers and relocation entries required for the | |
681 | output file. Set the file positions for the relocs. */ | |
682 | rel_filepos = obj_relocbase (abfd); | |
683 | relsz = bfd_coff_relsz (abfd); | |
684 | max_contents_size = 0; | |
685 | max_lineno_count = 0; | |
686 | max_reloc_count = 0; | |
687 | ||
0a1b45a2 | 688 | long_section_names = false; |
252b5132 RH |
689 | for (o = abfd->sections; o != NULL; o = o->next) |
690 | { | |
691 | o->reloc_count = 0; | |
692 | o->lineno_count = 0; | |
8423293d | 693 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
252b5132 RH |
694 | { |
695 | if (p->type == bfd_indirect_link_order) | |
696 | { | |
697 | asection *sec; | |
698 | ||
699 | sec = p->u.indirect.section; | |
700 | ||
701 | /* Mark all sections which are to be included in the | |
702 | link. This will normally be every section. We need | |
703 | to do this so that we can identify any sections which | |
704 | the linker has decided to not include. */ | |
0a1b45a2 | 705 | sec->linker_mark = true; |
252b5132 RH |
706 | |
707 | if (info->strip == strip_none | |
708 | || info->strip == strip_some) | |
709 | o->lineno_count += sec->lineno_count; | |
710 | ||
0e1862bb | 711 | if (bfd_link_relocatable (info)) |
252b5132 RH |
712 | o->reloc_count += sec->reloc_count; |
713 | ||
eea6121a AM |
714 | if (sec->rawsize > max_contents_size) |
715 | max_contents_size = sec->rawsize; | |
716 | if (sec->size > max_contents_size) | |
717 | max_contents_size = sec->size; | |
252b5132 RH |
718 | if (sec->lineno_count > max_lineno_count) |
719 | max_lineno_count = sec->lineno_count; | |
720 | if (sec->reloc_count > max_reloc_count) | |
721 | max_reloc_count = sec->reloc_count; | |
722 | } | |
0e1862bb | 723 | else if (bfd_link_relocatable (info) |
252b5132 RH |
724 | && (p->type == bfd_section_reloc_link_order |
725 | || p->type == bfd_symbol_reloc_link_order)) | |
726 | ++o->reloc_count; | |
727 | } | |
728 | if (o->reloc_count == 0) | |
729 | o->rel_filepos = 0; | |
730 | else | |
731 | { | |
732 | o->flags |= SEC_RELOC; | |
733 | o->rel_filepos = rel_filepos; | |
734 | rel_filepos += o->reloc_count * relsz; | |
e9168c1e MM |
735 | /* In PE COFF, if there are at least 0xffff relocations an |
736 | extra relocation will be written out to encode the count. */ | |
f717994f | 737 | if ((obj_pe (abfd) || obj_go32 (abfd)) && o->reloc_count >= 0xffff) |
e9168c1e | 738 | rel_filepos += relsz; |
252b5132 RH |
739 | } |
740 | ||
741 | if (bfd_coff_long_section_names (abfd) | |
742 | && strlen (o->name) > SCNNMLEN) | |
743 | { | |
744 | /* This section has a long name which must go in the string | |
07d6d2b8 AM |
745 | table. This must correspond to the code in |
746 | coff_write_object_contents which puts the string index | |
747 | into the s_name field of the section header. That is why | |
748 | we pass hash as FALSE. */ | |
0a1b45a2 | 749 | if (_bfd_stringtab_add (flaginfo.strtab, o->name, false, false) |
252b5132 RH |
750 | == (bfd_size_type) -1) |
751 | goto error_return; | |
0a1b45a2 | 752 | long_section_names = true; |
252b5132 RH |
753 | } |
754 | } | |
755 | ||
1049f94e | 756 | /* If doing a relocatable link, allocate space for the pointers we |
252b5132 | 757 | need to keep. */ |
0e1862bb | 758 | if (bfd_link_relocatable (info)) |
252b5132 RH |
759 | { |
760 | unsigned int i; | |
761 | ||
762 | /* We use section_count + 1, rather than section_count, because | |
07d6d2b8 | 763 | the target_index fields are 1 based. */ |
dc810e39 AM |
764 | amt = abfd->section_count + 1; |
765 | amt *= sizeof (struct coff_link_section_info); | |
57402f1e NC |
766 | flaginfo.section_info = (struct coff_link_section_info *) bfd_malloc (amt); |
767 | if (flaginfo.section_info == NULL) | |
252b5132 RH |
768 | goto error_return; |
769 | for (i = 0; i <= abfd->section_count; i++) | |
770 | { | |
57402f1e NC |
771 | flaginfo.section_info[i].relocs = NULL; |
772 | flaginfo.section_info[i].rel_hashes = NULL; | |
252b5132 RH |
773 | } |
774 | } | |
775 | ||
776 | /* We now know the size of the relocs, so we can determine the file | |
777 | positions of the line numbers. */ | |
778 | line_filepos = rel_filepos; | |
779 | linesz = bfd_coff_linesz (abfd); | |
780 | max_output_reloc_count = 0; | |
781 | for (o = abfd->sections; o != NULL; o = o->next) | |
782 | { | |
783 | if (o->lineno_count == 0) | |
784 | o->line_filepos = 0; | |
785 | else | |
786 | { | |
787 | o->line_filepos = line_filepos; | |
788 | line_filepos += o->lineno_count * linesz; | |
789 | } | |
790 | ||
791 | if (o->reloc_count != 0) | |
792 | { | |
793 | /* We don't know the indices of global symbols until we have | |
07d6d2b8 AM |
794 | written out all the local symbols. For each section in |
795 | the output file, we keep an array of pointers to hash | |
796 | table entries. Each entry in the array corresponds to a | |
797 | reloc. When we find a reloc against a global symbol, we | |
798 | set the corresponding entry in this array so that we can | |
799 | fix up the symbol index after we have written out all the | |
800 | local symbols. | |
252b5132 RH |
801 | |
802 | Because of this problem, we also keep the relocs in | |
803 | memory until the end of the link. This wastes memory, | |
1049f94e | 804 | but only when doing a relocatable link, which is not the |
252b5132 | 805 | common case. */ |
0e1862bb | 806 | BFD_ASSERT (bfd_link_relocatable (info)); |
dc810e39 AM |
807 | amt = o->reloc_count; |
808 | amt *= sizeof (struct internal_reloc); | |
57402f1e | 809 | flaginfo.section_info[o->target_index].relocs = |
07d6d2b8 | 810 | (struct internal_reloc *) bfd_malloc (amt); |
dc810e39 AM |
811 | amt = o->reloc_count; |
812 | amt *= sizeof (struct coff_link_hash_entry *); | |
57402f1e | 813 | flaginfo.section_info[o->target_index].rel_hashes = |
07d6d2b8 | 814 | (struct coff_link_hash_entry **) bfd_malloc (amt); |
57402f1e NC |
815 | if (flaginfo.section_info[o->target_index].relocs == NULL |
816 | || flaginfo.section_info[o->target_index].rel_hashes == NULL) | |
252b5132 RH |
817 | goto error_return; |
818 | ||
819 | if (o->reloc_count > max_output_reloc_count) | |
820 | max_output_reloc_count = o->reloc_count; | |
821 | } | |
822 | ||
823 | /* Reset the reloc and lineno counts, so that we can use them to | |
824 | count the number of entries we have output so far. */ | |
825 | o->reloc_count = 0; | |
826 | o->lineno_count = 0; | |
827 | } | |
828 | ||
829 | obj_sym_filepos (abfd) = line_filepos; | |
830 | ||
831 | /* Figure out the largest number of symbols in an input BFD. Take | |
832 | the opportunity to clear the output_has_begun fields of all the | |
833 | input BFD's. */ | |
834 | max_sym_count = 0; | |
c72f2fb2 | 835 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
252b5132 RH |
836 | { |
837 | size_t sz; | |
838 | ||
0a1b45a2 | 839 | sub->output_has_begun = false; |
e7ebb214 | 840 | sz = bfd_family_coff (sub) ? obj_raw_syment_count (sub) : 2; |
252b5132 RH |
841 | if (sz > max_sym_count) |
842 | max_sym_count = sz; | |
843 | } | |
844 | ||
845 | /* Allocate some buffers used while linking. */ | |
dc810e39 | 846 | amt = max_sym_count * sizeof (struct internal_syment); |
57402f1e | 847 | flaginfo.internal_syms = (struct internal_syment *) bfd_malloc (amt); |
dc810e39 | 848 | amt = max_sym_count * sizeof (asection *); |
57402f1e | 849 | flaginfo.sec_ptrs = (asection **) bfd_malloc (amt); |
dc810e39 | 850 | amt = max_sym_count * sizeof (long); |
57402f1e NC |
851 | flaginfo.sym_indices = (long int *) bfd_malloc (amt); |
852 | flaginfo.outsyms = (bfd_byte *) bfd_malloc ((max_sym_count + 1) * symesz); | |
dc810e39 | 853 | amt = max_lineno_count * bfd_coff_linesz (abfd); |
57402f1e NC |
854 | flaginfo.linenos = (bfd_byte *) bfd_malloc (amt); |
855 | flaginfo.contents = (bfd_byte *) bfd_malloc (max_contents_size); | |
dc810e39 | 856 | amt = max_reloc_count * relsz; |
57402f1e | 857 | flaginfo.external_relocs = (bfd_byte *) bfd_malloc (amt); |
0e1862bb | 858 | if (! bfd_link_relocatable (info)) |
dc810e39 AM |
859 | { |
860 | amt = max_reloc_count * sizeof (struct internal_reloc); | |
57402f1e | 861 | flaginfo.internal_relocs = (struct internal_reloc *) bfd_malloc (amt); |
dc810e39 | 862 | } |
57402f1e NC |
863 | if ((flaginfo.internal_syms == NULL && max_sym_count > 0) |
864 | || (flaginfo.sec_ptrs == NULL && max_sym_count > 0) | |
865 | || (flaginfo.sym_indices == NULL && max_sym_count > 0) | |
866 | || flaginfo.outsyms == NULL | |
867 | || (flaginfo.linenos == NULL && max_lineno_count > 0) | |
868 | || (flaginfo.contents == NULL && max_contents_size > 0) | |
869 | || (flaginfo.external_relocs == NULL && max_reloc_count > 0) | |
0e1862bb | 870 | || (! bfd_link_relocatable (info) |
57402f1e | 871 | && flaginfo.internal_relocs == NULL |
252b5132 RH |
872 | && max_reloc_count > 0)) |
873 | goto error_return; | |
874 | ||
875 | /* We now know the position of everything in the file, except that | |
876 | we don't know the size of the symbol table and therefore we don't | |
877 | know where the string table starts. We just build the string | |
878 | table in memory as we go along. We process all the relocations | |
879 | for a single input file at once. */ | |
880 | obj_raw_syment_count (abfd) = 0; | |
881 | ||
882 | if (coff_backend_info (abfd)->_bfd_coff_start_final_link) | |
883 | { | |
884 | if (! bfd_coff_start_final_link (abfd, info)) | |
885 | goto error_return; | |
886 | } | |
887 | ||
888 | for (o = abfd->sections; o != NULL; o = o->next) | |
889 | { | |
8423293d | 890 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
252b5132 RH |
891 | { |
892 | if (p->type == bfd_indirect_link_order | |
9bd09e22 | 893 | && bfd_family_coff (p->u.indirect.section->owner)) |
252b5132 RH |
894 | { |
895 | sub = p->u.indirect.section->owner; | |
57402f1e | 896 | if (! bfd_coff_link_output_has_begun (sub, & flaginfo)) |
252b5132 | 897 | { |
57402f1e | 898 | if (! _bfd_coff_link_input_bfd (&flaginfo, sub)) |
252b5132 | 899 | goto error_return; |
0a1b45a2 | 900 | sub->output_has_begun = true; |
252b5132 RH |
901 | } |
902 | } | |
903 | else if (p->type == bfd_section_reloc_link_order | |
904 | || p->type == bfd_symbol_reloc_link_order) | |
905 | { | |
57402f1e | 906 | if (! _bfd_coff_reloc_link_order (abfd, &flaginfo, o, p)) |
252b5132 RH |
907 | goto error_return; |
908 | } | |
909 | else | |
910 | { | |
911 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
912 | goto error_return; | |
913 | } | |
914 | } | |
915 | } | |
916 | ||
57402f1e | 917 | if (flaginfo.info->strip != strip_all && flaginfo.info->discard != discard_all) |
e7ebb214 JB |
918 | { |
919 | /* Add local symbols from foreign inputs. */ | |
c72f2fb2 | 920 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
e7ebb214 JB |
921 | { |
922 | unsigned int i; | |
923 | ||
924 | if (bfd_family_coff (sub) || ! bfd_get_outsymbols (sub)) | |
925 | continue; | |
926 | for (i = 0; i < bfd_get_symcount (sub); ++i) | |
927 | { | |
928 | asymbol *sym = bfd_get_outsymbols (sub) [i]; | |
929 | file_ptr pos; | |
930 | struct internal_syment isym; | |
e7ebb214 | 931 | bfd_vma written = 0; |
20bed3bb | 932 | bool rewrite = false; |
e7ebb214 JB |
933 | |
934 | if (! (sym->flags & BSF_LOCAL) | |
935 | || (sym->flags & (BSF_SECTION_SYM | BSF_DEBUGGING_RELOC | |
936 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC | |
937 | | BSF_SYNTHETIC)) | |
938 | || ((sym->flags & BSF_DEBUGGING) | |
939 | && ! (sym->flags & BSF_FILE))) | |
940 | continue; | |
941 | ||
942 | /* See if we are discarding symbols with this name. */ | |
57402f1e NC |
943 | if ((flaginfo.info->strip == strip_some |
944 | && (bfd_hash_lookup (flaginfo.info->keep_hash, | |
0a1b45a2 | 945 | bfd_asymbol_name(sym), false, false) |
e7ebb214 | 946 | == NULL)) |
57402f1e | 947 | || (((flaginfo.info->discard == discard_sec_merge |
e6f7f6d1 | 948 | && (bfd_asymbol_section (sym)->flags & SEC_MERGE) |
0e1862bb | 949 | && ! bfd_link_relocatable (flaginfo.info)) |
57402f1e | 950 | || flaginfo.info->discard == discard_l) |
e7ebb214 JB |
951 | && bfd_is_local_label_name (sub, bfd_asymbol_name(sym)))) |
952 | continue; | |
953 | ||
954 | pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) | |
955 | * symesz; | |
956 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
957 | goto error_return; | |
20bed3bb JB |
958 | if (! coff_write_alien_symbol(abfd, sym, &isym, &written, |
959 | flaginfo.strtab, | |
960 | !flaginfo.info->traditional_format, | |
961 | NULL, NULL)) | |
e7ebb214 JB |
962 | goto error_return; |
963 | ||
e7ebb214 JB |
964 | if (isym.n_sclass == C_FILE) |
965 | { | |
57402f1e | 966 | if (flaginfo.last_file_index != -1) |
e7ebb214 | 967 | { |
57402f1e NC |
968 | flaginfo.last_file.n_value = obj_raw_syment_count (abfd); |
969 | bfd_coff_swap_sym_out (abfd, &flaginfo.last_file, | |
970 | flaginfo.outsyms); | |
971 | pos = obj_sym_filepos (abfd) + flaginfo.last_file_index | |
e7ebb214 | 972 | * symesz; |
0a1b45a2 | 973 | rewrite = true; |
e7ebb214 | 974 | } |
57402f1e NC |
975 | flaginfo.last_file_index = obj_raw_syment_count (abfd); |
976 | flaginfo.last_file = isym; | |
e7ebb214 JB |
977 | } |
978 | ||
979 | if (rewrite | |
980 | && (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
226f9f4f | 981 | || bfd_write (flaginfo.outsyms, symesz, abfd) != symesz)) |
e7ebb214 JB |
982 | goto error_return; |
983 | ||
984 | obj_raw_syment_count (abfd) += written; | |
985 | } | |
986 | } | |
987 | } | |
988 | ||
57402f1e | 989 | if (! bfd_coff_final_link_postscript (abfd, & flaginfo)) |
252b5132 | 990 | goto error_return; |
244148ad | 991 | |
252b5132 RH |
992 | /* Free up the buffers used by _bfd_coff_link_input_bfd. */ |
993 | ||
57402f1e | 994 | coff_debug_merge_hash_table_free (&flaginfo.debug_merge); |
0a1b45a2 | 995 | debug_merge_allocated = false; |
252b5132 | 996 | |
c9594989 AM |
997 | free (flaginfo.internal_syms); |
998 | flaginfo.internal_syms = NULL; | |
999 | free (flaginfo.sec_ptrs); | |
1000 | flaginfo.sec_ptrs = NULL; | |
1001 | free (flaginfo.sym_indices); | |
1002 | flaginfo.sym_indices = NULL; | |
1003 | free (flaginfo.linenos); | |
1004 | flaginfo.linenos = NULL; | |
1005 | free (flaginfo.contents); | |
1006 | flaginfo.contents = NULL; | |
1007 | free (flaginfo.external_relocs); | |
1008 | flaginfo.external_relocs = NULL; | |
1009 | free (flaginfo.internal_relocs); | |
1010 | flaginfo.internal_relocs = NULL; | |
252b5132 RH |
1011 | |
1012 | /* The value of the last C_FILE symbol is supposed to be the symbol | |
1013 | index of the first external symbol. Write it out again if | |
1014 | necessary. */ | |
57402f1e NC |
1015 | if (flaginfo.last_file_index != -1 |
1016 | && (unsigned int) flaginfo.last_file.n_value != obj_raw_syment_count (abfd)) | |
252b5132 | 1017 | { |
dc810e39 AM |
1018 | file_ptr pos; |
1019 | ||
57402f1e NC |
1020 | flaginfo.last_file.n_value = obj_raw_syment_count (abfd); |
1021 | bfd_coff_swap_sym_out (abfd, &flaginfo.last_file, | |
1022 | flaginfo.outsyms); | |
dc810e39 | 1023 | |
57402f1e | 1024 | pos = obj_sym_filepos (abfd) + flaginfo.last_file_index * symesz; |
dc810e39 | 1025 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 |
226f9f4f | 1026 | || bfd_write (flaginfo.outsyms, symesz, abfd) != symesz) |
0a1b45a2 | 1027 | return false; |
252b5132 RH |
1028 | } |
1029 | ||
1030 | /* If doing task linking (ld --task-link) then make a pass through the | |
1031 | global symbols, writing out any that are defined, and making them | |
244148ad | 1032 | static. */ |
252b5132 RH |
1033 | if (info->task_link) |
1034 | { | |
0a1b45a2 | 1035 | flaginfo.failed = false; |
e92d460e | 1036 | coff_link_hash_traverse (coff_hash_table (info), |
57402f1e NC |
1037 | _bfd_coff_write_task_globals, &flaginfo); |
1038 | if (flaginfo.failed) | |
252b5132 RH |
1039 | goto error_return; |
1040 | } | |
1041 | ||
1042 | /* Write out the global symbols. */ | |
0a1b45a2 | 1043 | flaginfo.failed = false; |
57402f1e NC |
1044 | bfd_hash_traverse (&info->hash->table, _bfd_coff_write_global_sym, &flaginfo); |
1045 | if (flaginfo.failed) | |
252b5132 RH |
1046 | goto error_return; |
1047 | ||
1048 | /* The outsyms buffer is used by _bfd_coff_write_global_sym. */ | |
c9594989 AM |
1049 | free (flaginfo.outsyms); |
1050 | flaginfo.outsyms = NULL; | |
252b5132 | 1051 | |
0e1862bb | 1052 | if (bfd_link_relocatable (info) && max_output_reloc_count > 0) |
252b5132 RH |
1053 | { |
1054 | /* Now that we have written out all the global symbols, we know | |
1055 | the symbol indices to use for relocs against them, and we can | |
1056 | finally write out the relocs. */ | |
dc810e39 | 1057 | amt = max_output_reloc_count * relsz; |
a50b1753 | 1058 | external_relocs = (bfd_byte *) bfd_malloc (amt); |
252b5132 RH |
1059 | if (external_relocs == NULL) |
1060 | goto error_return; | |
1061 | ||
1062 | for (o = abfd->sections; o != NULL; o = o->next) | |
1063 | { | |
1064 | struct internal_reloc *irel; | |
1065 | struct internal_reloc *irelend; | |
1066 | struct coff_link_hash_entry **rel_hash; | |
1067 | bfd_byte *erel; | |
1068 | ||
1069 | if (o->reloc_count == 0) | |
1070 | continue; | |
1071 | ||
57402f1e | 1072 | irel = flaginfo.section_info[o->target_index].relocs; |
252b5132 | 1073 | irelend = irel + o->reloc_count; |
57402f1e | 1074 | rel_hash = flaginfo.section_info[o->target_index].rel_hashes; |
252b5132 RH |
1075 | erel = external_relocs; |
1076 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) | |
1077 | { | |
1078 | if (*rel_hash != NULL) | |
1079 | { | |
1080 | BFD_ASSERT ((*rel_hash)->indx >= 0); | |
1081 | irel->r_symndx = (*rel_hash)->indx; | |
1082 | } | |
8b956130 | 1083 | bfd_coff_swap_reloc_out (abfd, irel, erel); |
252b5132 RH |
1084 | } |
1085 | ||
cd339148 NS |
1086 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0) |
1087 | goto error_return; | |
f717994f | 1088 | if ((obj_pe (abfd) || obj_go32 (abfd)) && o->reloc_count >= 0xffff) |
cd339148 NS |
1089 | { |
1090 | /* In PE COFF, write the count of relocs as the first | |
1091 | reloc. The header overflow bit will be set | |
1092 | elsewhere. */ | |
1093 | struct internal_reloc incount; | |
1094 | bfd_byte *excount = (bfd_byte *)bfd_malloc (relsz); | |
68ffbac6 | 1095 | |
cd339148 NS |
1096 | memset (&incount, 0, sizeof (incount)); |
1097 | incount.r_vaddr = o->reloc_count + 1; | |
2c3fc389 | 1098 | bfd_coff_swap_reloc_out (abfd, &incount, excount); |
226f9f4f | 1099 | if (bfd_write (excount, relsz, abfd) != relsz) |
cd339148 NS |
1100 | /* We'll leak, but it's an error anyway. */ |
1101 | goto error_return; | |
1102 | free (excount); | |
1103 | } | |
226f9f4f AM |
1104 | if (bfd_write (external_relocs, |
1105 | (bfd_size_type) relsz * o->reloc_count, abfd) | |
cd339148 | 1106 | != (bfd_size_type) relsz * o->reloc_count) |
252b5132 RH |
1107 | goto error_return; |
1108 | } | |
1109 | ||
1110 | free (external_relocs); | |
1111 | external_relocs = NULL; | |
1112 | } | |
1113 | ||
1114 | /* Free up the section information. */ | |
57402f1e | 1115 | if (flaginfo.section_info != NULL) |
252b5132 RH |
1116 | { |
1117 | unsigned int i; | |
1118 | ||
1119 | for (i = 0; i < abfd->section_count; i++) | |
1120 | { | |
c9594989 AM |
1121 | free (flaginfo.section_info[i].relocs); |
1122 | free (flaginfo.section_info[i].rel_hashes); | |
252b5132 | 1123 | } |
57402f1e NC |
1124 | free (flaginfo.section_info); |
1125 | flaginfo.section_info = NULL; | |
252b5132 RH |
1126 | } |
1127 | ||
1128 | /* If we have optimized stabs strings, output them. */ | |
3722b82f | 1129 | if (coff_hash_table (info)->stab_info.stabstr != NULL) |
252b5132 RH |
1130 | { |
1131 | if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info)) | |
0a1b45a2 | 1132 | return false; |
252b5132 RH |
1133 | } |
1134 | ||
1135 | /* Write out the string table. */ | |
1136 | if (obj_raw_syment_count (abfd) != 0 || long_section_names) | |
1137 | { | |
dc810e39 AM |
1138 | file_ptr pos; |
1139 | ||
1140 | pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz; | |
1141 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
0a1b45a2 | 1142 | return false; |
252b5132 RH |
1143 | |
1144 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1145 | H_PUT_32 (abfd, |
57402f1e | 1146 | _bfd_stringtab_size (flaginfo.strtab) + STRING_SIZE_SIZE, |
dc810e39 | 1147 | strbuf); |
252b5132 | 1148 | #else |
dc810e39 | 1149 | #error Change H_PUT_32 above |
252b5132 RH |
1150 | #endif |
1151 | ||
226f9f4f | 1152 | if (bfd_write (strbuf, STRING_SIZE_SIZE, abfd) != STRING_SIZE_SIZE) |
0a1b45a2 | 1153 | return false; |
252b5132 | 1154 | |
57402f1e | 1155 | if (! _bfd_stringtab_emit (abfd, flaginfo.strtab)) |
0a1b45a2 | 1156 | return false; |
d71f672e | 1157 | |
0a1b45a2 | 1158 | obj_coff_strings_written (abfd) = true; |
252b5132 RH |
1159 | } |
1160 | ||
57402f1e | 1161 | _bfd_stringtab_free (flaginfo.strtab); |
252b5132 | 1162 | |
ed48ec2e | 1163 | /* Setting symcount to 0 will cause write_object_contents to |
252b5132 | 1164 | not try to write out the symbols. */ |
ed48ec2e | 1165 | abfd->symcount = 0; |
252b5132 | 1166 | |
0a1b45a2 | 1167 | return true; |
252b5132 RH |
1168 | |
1169 | error_return: | |
1170 | if (debug_merge_allocated) | |
57402f1e NC |
1171 | coff_debug_merge_hash_table_free (&flaginfo.debug_merge); |
1172 | if (flaginfo.strtab != NULL) | |
1173 | _bfd_stringtab_free (flaginfo.strtab); | |
1174 | if (flaginfo.section_info != NULL) | |
252b5132 RH |
1175 | { |
1176 | unsigned int i; | |
1177 | ||
1178 | for (i = 0; i < abfd->section_count; i++) | |
1179 | { | |
c9594989 AM |
1180 | free (flaginfo.section_info[i].relocs); |
1181 | free (flaginfo.section_info[i].rel_hashes); | |
252b5132 | 1182 | } |
57402f1e | 1183 | free (flaginfo.section_info); |
252b5132 | 1184 | } |
c9594989 AM |
1185 | free (flaginfo.internal_syms); |
1186 | free (flaginfo.sec_ptrs); | |
1187 | free (flaginfo.sym_indices); | |
1188 | free (flaginfo.outsyms); | |
1189 | free (flaginfo.linenos); | |
1190 | free (flaginfo.contents); | |
1191 | free (flaginfo.external_relocs); | |
1192 | free (flaginfo.internal_relocs); | |
1193 | free (external_relocs); | |
0a1b45a2 | 1194 | return false; |
252b5132 RH |
1195 | } |
1196 | ||
8b956130 | 1197 | /* Parse out a -heap <reserved>,<commit> line. */ |
252b5132 RH |
1198 | |
1199 | static char * | |
8b956130 | 1200 | dores_com (char *ptr, bfd *output_bfd, int heap) |
252b5132 | 1201 | { |
10df41b1 | 1202 | if (obj_pe (output_bfd)) |
252b5132 RH |
1203 | { |
1204 | int val = strtoul (ptr, &ptr, 0); | |
8b956130 | 1205 | |
252b5132 | 1206 | if (heap) |
dc810e39 | 1207 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve = val; |
252b5132 | 1208 | else |
dc810e39 | 1209 | pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve = val; |
252b5132 | 1210 | |
244148ad | 1211 | if (ptr[0] == ',') |
252b5132 | 1212 | { |
dc810e39 | 1213 | val = strtoul (ptr+1, &ptr, 0); |
252b5132 | 1214 | if (heap) |
dc810e39 | 1215 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit = val; |
252b5132 | 1216 | else |
dc810e39 | 1217 | pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit = val; |
252b5132 RH |
1218 | } |
1219 | } | |
1220 | return ptr; | |
1221 | } | |
1222 | ||
8b956130 NC |
1223 | static char * |
1224 | get_name (char *ptr, char **dst) | |
252b5132 RH |
1225 | { |
1226 | while (*ptr == ' ') | |
1227 | ptr++; | |
1228 | *dst = ptr; | |
1229 | while (*ptr && *ptr != ' ') | |
1230 | ptr++; | |
1231 | *ptr = 0; | |
1232 | return ptr+1; | |
1233 | } | |
1234 | ||
8b956130 | 1235 | /* Process any magic embedded commands in a section called .drectve. */ |
244148ad | 1236 | |
252b5132 | 1237 | static int |
8b956130 NC |
1238 | process_embedded_commands (bfd *output_bfd, |
1239 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1240 | bfd *abfd) | |
252b5132 RH |
1241 | { |
1242 | asection *sec = bfd_get_section_by_name (abfd, ".drectve"); | |
1243 | char *s; | |
1244 | char *e; | |
eea6121a | 1245 | bfd_byte *copy; |
8b956130 | 1246 | |
81ff113f | 1247 | if (sec == NULL || (sec->flags & SEC_HAS_CONTENTS) == 0) |
252b5132 | 1248 | return 1; |
244148ad | 1249 | |
eea6121a | 1250 | if (!bfd_malloc_and_get_section (abfd, sec, ©)) |
252b5132 | 1251 | { |
c9594989 | 1252 | free (copy); |
252b5132 RH |
1253 | return 0; |
1254 | } | |
f075ee0c | 1255 | e = (char *) copy + sec->size; |
8b956130 | 1256 | |
f075ee0c | 1257 | for (s = (char *) copy; s < e ; ) |
252b5132 | 1258 | { |
f075ee0c | 1259 | if (s[0] != '-') |
8b956130 NC |
1260 | { |
1261 | s++; | |
1262 | continue; | |
1263 | } | |
08dedd66 | 1264 | if (startswith (s, "-attr")) |
252b5132 RH |
1265 | { |
1266 | char *name; | |
1267 | char *attribs; | |
1268 | asection *asec; | |
252b5132 RH |
1269 | int loop = 1; |
1270 | int had_write = 0; | |
252b5132 | 1271 | int had_exec= 0; |
8b956130 | 1272 | |
252b5132 | 1273 | s += 5; |
8b956130 NC |
1274 | s = get_name (s, &name); |
1275 | s = get_name (s, &attribs); | |
1276 | ||
1277 | while (loop) | |
1278 | { | |
1279 | switch (*attribs++) | |
1280 | { | |
1281 | case 'W': | |
1282 | had_write = 1; | |
1283 | break; | |
1284 | case 'R': | |
8b956130 NC |
1285 | break; |
1286 | case 'S': | |
8b956130 NC |
1287 | break; |
1288 | case 'X': | |
1289 | had_exec = 1; | |
1290 | break; | |
1291 | default: | |
1292 | loop = 0; | |
1293 | } | |
1294 | } | |
252b5132 | 1295 | asec = bfd_get_section_by_name (abfd, name); |
8b956130 NC |
1296 | if (asec) |
1297 | { | |
1298 | if (had_exec) | |
1299 | asec->flags |= SEC_CODE; | |
1300 | if (!had_write) | |
1301 | asec->flags |= SEC_READONLY; | |
1302 | } | |
252b5132 | 1303 | } |
08dedd66 | 1304 | else if (startswith (s, "-heap")) |
0112cd26 | 1305 | s = dores_com (s + 5, output_bfd, 1); |
8b956130 | 1306 | |
08dedd66 | 1307 | else if (startswith (s, "-stack")) |
0112cd26 | 1308 | s = dores_com (s + 6, output_bfd, 0); |
8b956130 | 1309 | |
c1711530 | 1310 | /* GNU extension for aligned commons. */ |
08dedd66 | 1311 | else if (startswith (s, "-aligncomm:")) |
c1711530 DK |
1312 | { |
1313 | /* Common symbols must be aligned on reading, as it | |
1314 | is too late to do anything here, after they have | |
1315 | already been allocated, so just skip the directive. */ | |
1316 | s += 11; | |
1317 | } | |
1318 | ||
244148ad | 1319 | else |
252b5132 RH |
1320 | s++; |
1321 | } | |
1322 | free (copy); | |
1323 | return 1; | |
1324 | } | |
1325 | ||
1326 | /* Place a marker against all symbols which are used by relocations. | |
1327 | This marker can be picked up by the 'do we skip this symbol ?' | |
1328 | loop in _bfd_coff_link_input_bfd() and used to prevent skipping | |
8b956130 | 1329 | that symbol. */ |
252b5132 RH |
1330 | |
1331 | static void | |
57402f1e | 1332 | mark_relocs (struct coff_final_link_info *flaginfo, bfd *input_bfd) |
252b5132 RH |
1333 | { |
1334 | asection * a; | |
1335 | ||
1336 | if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0) | |
1337 | return; | |
244148ad | 1338 | |
252b5132 RH |
1339 | for (a = input_bfd->sections; a != (asection *) NULL; a = a->next) |
1340 | { | |
1341 | struct internal_reloc * internal_relocs; | |
1342 | struct internal_reloc * irel; | |
1343 | struct internal_reloc * irelend; | |
1344 | ||
a29a8af8 KT |
1345 | if ((a->flags & SEC_RELOC) == 0 || a->reloc_count < 1 |
1346 | || a->linker_mark == 0) | |
252b5132 | 1347 | continue; |
a8fcf378 NC |
1348 | /* Don't mark relocs in excluded sections. */ |
1349 | if (a->output_section == bfd_abs_section_ptr) | |
1350 | continue; | |
252b5132 RH |
1351 | |
1352 | /* Read in the relocs. */ | |
1353 | internal_relocs = _bfd_coff_read_internal_relocs | |
0a1b45a2 | 1354 | (input_bfd, a, false, |
57402f1e | 1355 | flaginfo->external_relocs, |
0e1862bb L |
1356 | bfd_link_relocatable (flaginfo->info), |
1357 | (bfd_link_relocatable (flaginfo->info) | |
57402f1e NC |
1358 | ? (flaginfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count) |
1359 | : flaginfo->internal_relocs) | |
252b5132 | 1360 | ); |
244148ad | 1361 | |
252b5132 RH |
1362 | if (internal_relocs == NULL) |
1363 | continue; | |
1364 | ||
1365 | irel = internal_relocs; | |
1366 | irelend = irel + a->reloc_count; | |
1367 | ||
1368 | /* Place a mark in the sym_indices array (whose entries have | |
1369 | been initialised to 0) for all of the symbols that are used | |
1370 | in the relocation table. This will then be picked up in the | |
8b956130 | 1371 | skip/don't-skip pass. */ |
252b5132 | 1372 | for (; irel < irelend; irel++) |
06ab6faf AM |
1373 | if ((unsigned long) irel->r_symndx < obj_raw_syment_count (input_bfd)) |
1374 | flaginfo->sym_indices[irel->r_symndx] = -1; | |
252b5132 RH |
1375 | } |
1376 | } | |
1377 | ||
1378 | /* Link an input file into the linker output file. This function | |
1379 | handles all the sections and relocations of the input file at once. */ | |
1380 | ||
0a1b45a2 | 1381 | bool |
57402f1e | 1382 | _bfd_coff_link_input_bfd (struct coff_final_link_info *flaginfo, bfd *input_bfd) |
252b5132 | 1383 | { |
b2d638c7 ILT |
1384 | unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask; |
1385 | unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft; | |
0a1b45a2 | 1386 | bool (*adjust_symndx) |
8b956130 | 1387 | (bfd *, struct bfd_link_info *, bfd *, asection *, |
0a1b45a2 | 1388 | struct internal_reloc *, bool *); |
252b5132 RH |
1389 | bfd *output_bfd; |
1390 | const char *strings; | |
1391 | bfd_size_type syment_base; | |
0a1b45a2 | 1392 | bool copy, hash; |
252b5132 RH |
1393 | bfd_size_type isymesz; |
1394 | bfd_size_type osymesz; | |
1395 | bfd_size_type linesz; | |
1396 | bfd_byte *esym; | |
1397 | bfd_byte *esym_end; | |
1398 | struct internal_syment *isymp; | |
1399 | asection **secpp; | |
1400 | long *indexp; | |
1401 | unsigned long output_index; | |
1402 | bfd_byte *outsym; | |
1403 | struct coff_link_hash_entry **sym_hash; | |
1404 | asection *o; | |
1405 | ||
1406 | /* Move all the symbols to the output file. */ | |
1407 | ||
57402f1e | 1408 | output_bfd = flaginfo->output_bfd; |
252b5132 RH |
1409 | strings = NULL; |
1410 | syment_base = obj_raw_syment_count (output_bfd); | |
1411 | isymesz = bfd_coff_symesz (input_bfd); | |
1412 | osymesz = bfd_coff_symesz (output_bfd); | |
1413 | linesz = bfd_coff_linesz (input_bfd); | |
1414 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
1415 | ||
0a1b45a2 | 1416 | copy = false; |
57402f1e | 1417 | if (! flaginfo->info->keep_memory) |
0a1b45a2 AM |
1418 | copy = true; |
1419 | hash = true; | |
b560e2ac | 1420 | if (flaginfo->info->traditional_format) |
0a1b45a2 | 1421 | hash = false; |
252b5132 RH |
1422 | |
1423 | if (! _bfd_coff_get_external_symbols (input_bfd)) | |
0a1b45a2 | 1424 | return false; |
252b5132 RH |
1425 | |
1426 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1427 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
57402f1e NC |
1428 | isymp = flaginfo->internal_syms; |
1429 | secpp = flaginfo->sec_ptrs; | |
1430 | indexp = flaginfo->sym_indices; | |
252b5132 | 1431 | output_index = syment_base; |
57402f1e | 1432 | outsym = flaginfo->outsyms; |
252b5132 | 1433 | |
10df41b1 | 1434 | if (obj_pe (output_bfd) |
57402f1e | 1435 | && ! process_embedded_commands (output_bfd, flaginfo->info, input_bfd)) |
0a1b45a2 | 1436 | return false; |
252b5132 | 1437 | |
8b956130 NC |
1438 | /* If we are going to perform relocations and also strip/discard some |
1439 | symbols then we must make sure that we do not strip/discard those | |
1440 | symbols that are going to be involved in the relocations. */ | |
57402f1e NC |
1441 | if (( flaginfo->info->strip != strip_none |
1442 | || flaginfo->info->discard != discard_none) | |
0e1862bb | 1443 | && bfd_link_relocatable (flaginfo->info)) |
252b5132 | 1444 | { |
8b956130 | 1445 | /* Mark the symbol array as 'not-used'. */ |
244148ad KH |
1446 | memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp); |
1447 | ||
57402f1e | 1448 | mark_relocs (flaginfo, input_bfd); |
252b5132 RH |
1449 | } |
1450 | ||
1451 | while (esym < esym_end) | |
1452 | { | |
1453 | struct internal_syment isym; | |
5d54c628 | 1454 | enum coff_symbol_classification classification; |
0a1b45a2 AM |
1455 | bool skip; |
1456 | bool global; | |
1457 | bool dont_skip_symbol; | |
252b5132 RH |
1458 | int add; |
1459 | ||
8b956130 | 1460 | bfd_coff_swap_sym_in (input_bfd, esym, isymp); |
252b5132 RH |
1461 | |
1462 | /* Make a copy of *isymp so that the relocate_section function | |
1463 | always sees the original values. This is more reliable than | |
1464 | always recomputing the symbol value even if we are stripping | |
1465 | the symbol. */ | |
1466 | isym = *isymp; | |
1467 | ||
5d54c628 ILT |
1468 | classification = bfd_coff_classify_symbol (input_bfd, &isym); |
1469 | switch (classification) | |
252b5132 | 1470 | { |
5d54c628 ILT |
1471 | default: |
1472 | abort (); | |
1473 | case COFF_SYMBOL_GLOBAL: | |
1474 | case COFF_SYMBOL_PE_SECTION: | |
1475 | case COFF_SYMBOL_LOCAL: | |
1476 | *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum); | |
1477 | break; | |
1478 | case COFF_SYMBOL_COMMON: | |
1479 | *secpp = bfd_com_section_ptr; | |
1480 | break; | |
1481 | case COFF_SYMBOL_UNDEFINED: | |
1482 | *secpp = bfd_und_section_ptr; | |
1483 | break; | |
252b5132 RH |
1484 | } |
1485 | ||
1486 | /* Extract the flag indicating if this symbol is used by a | |
07d6d2b8 | 1487 | relocation. */ |
57402f1e NC |
1488 | if ((flaginfo->info->strip != strip_none |
1489 | || flaginfo->info->discard != discard_none) | |
0e1862bb | 1490 | && bfd_link_relocatable (flaginfo->info)) |
252b5132 RH |
1491 | dont_skip_symbol = *indexp; |
1492 | else | |
0a1b45a2 | 1493 | dont_skip_symbol = false; |
244148ad | 1494 | |
252b5132 RH |
1495 | *indexp = -1; |
1496 | ||
0a1b45a2 AM |
1497 | skip = false; |
1498 | global = false; | |
252b5132 RH |
1499 | add = 1 + isym.n_numaux; |
1500 | ||
1501 | /* If we are stripping all symbols, we want to skip this one. */ | |
57402f1e | 1502 | if (flaginfo->info->strip == strip_all && ! dont_skip_symbol) |
0a1b45a2 | 1503 | skip = true; |
252b5132 RH |
1504 | |
1505 | if (! skip) | |
1506 | { | |
5d54c628 | 1507 | switch (classification) |
252b5132 | 1508 | { |
5d54c628 ILT |
1509 | default: |
1510 | abort (); | |
1511 | case COFF_SYMBOL_GLOBAL: | |
1512 | case COFF_SYMBOL_COMMON: | |
1513 | case COFF_SYMBOL_PE_SECTION: | |
252b5132 RH |
1514 | /* This is a global symbol. Global symbols come at the |
1515 | end of the symbol table, so skip them for now. | |
1516 | Locally defined function symbols, however, are an | |
1517 | exception, and are not moved to the end. */ | |
0a1b45a2 | 1518 | global = true; |
5d54c628 | 1519 | if (! ISFCN (isym.n_type)) |
0a1b45a2 | 1520 | skip = true; |
5d54c628 ILT |
1521 | break; |
1522 | ||
1523 | case COFF_SYMBOL_UNDEFINED: | |
1524 | /* Undefined symbols are left for the end. */ | |
0a1b45a2 AM |
1525 | global = true; |
1526 | skip = true; | |
5d54c628 ILT |
1527 | break; |
1528 | ||
1529 | case COFF_SYMBOL_LOCAL: | |
252b5132 | 1530 | /* This is a local symbol. Skip it if we are discarding |
07d6d2b8 | 1531 | local symbols. */ |
57402f1e | 1532 | if (flaginfo->info->discard == discard_all && ! dont_skip_symbol) |
0a1b45a2 | 1533 | skip = true; |
5d54c628 | 1534 | break; |
252b5132 RH |
1535 | } |
1536 | } | |
1537 | ||
440c4607 NC |
1538 | #ifndef COFF_WITH_PE |
1539 | /* Skip section symbols for sections which are not going to be | |
862517b6 | 1540 | emitted. */ |
440c4607 | 1541 | if (!skip |
f0803690 | 1542 | && !dont_skip_symbol |
440c4607 NC |
1543 | && isym.n_sclass == C_STAT |
1544 | && isym.n_type == T_NULL | |
f0803690 AM |
1545 | && isym.n_numaux > 0 |
1546 | && ((*secpp)->output_section == bfd_abs_section_ptr | |
1547 | || bfd_section_removed_from_list (output_bfd, | |
1548 | (*secpp)->output_section))) | |
0a1b45a2 | 1549 | skip = true; |
440c4607 NC |
1550 | #endif |
1551 | ||
252b5132 | 1552 | /* If we stripping debugging symbols, and this is a debugging |
07d6d2b8 AM |
1553 | symbol, then skip it. FIXME: gas sets the section to N_ABS |
1554 | for some types of debugging symbols; I don't know if this is | |
1555 | a bug or not. In any case, we handle it here. */ | |
252b5132 | 1556 | if (! skip |
57402f1e | 1557 | && flaginfo->info->strip == strip_debugger |
252b5132 RH |
1558 | && ! dont_skip_symbol |
1559 | && (isym.n_scnum == N_DEBUG | |
1560 | || (isym.n_scnum == N_ABS | |
1561 | && (isym.n_sclass == C_AUTO | |
1562 | || isym.n_sclass == C_REG | |
1563 | || isym.n_sclass == C_MOS | |
1564 | || isym.n_sclass == C_MOE | |
1565 | || isym.n_sclass == C_MOU | |
1566 | || isym.n_sclass == C_ARG | |
1567 | || isym.n_sclass == C_REGPARM | |
1568 | || isym.n_sclass == C_FIELD | |
1569 | || isym.n_sclass == C_EOS)))) | |
0a1b45a2 | 1570 | skip = true; |
252b5132 RH |
1571 | |
1572 | /* If some symbols are stripped based on the name, work out the | |
1573 | name and decide whether to skip this symbol. */ | |
1574 | if (! skip | |
57402f1e NC |
1575 | && (flaginfo->info->strip == strip_some |
1576 | || flaginfo->info->discard == discard_l)) | |
252b5132 RH |
1577 | { |
1578 | const char *name; | |
1579 | char buf[SYMNMLEN + 1]; | |
1580 | ||
1581 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1582 | if (name == NULL) | |
0a1b45a2 | 1583 | return false; |
252b5132 RH |
1584 | |
1585 | if (! dont_skip_symbol | |
57402f1e | 1586 | && ((flaginfo->info->strip == strip_some |
0a1b45a2 AM |
1587 | && (bfd_hash_lookup (flaginfo->info->keep_hash, name, false, |
1588 | false) == NULL)) | |
252b5132 | 1589 | || (! global |
57402f1e | 1590 | && flaginfo->info->discard == discard_l |
252b5132 | 1591 | && bfd_is_local_label_name (input_bfd, name)))) |
0a1b45a2 | 1592 | skip = true; |
252b5132 RH |
1593 | } |
1594 | ||
1595 | /* If this is an enum, struct, or union tag, see if we have | |
07d6d2b8 | 1596 | already output an identical type. */ |
252b5132 | 1597 | if (! skip |
b560e2ac | 1598 | && !flaginfo->info->traditional_format |
252b5132 RH |
1599 | && (isym.n_sclass == C_ENTAG |
1600 | || isym.n_sclass == C_STRTAG | |
1601 | || isym.n_sclass == C_UNTAG) | |
1602 | && isym.n_numaux == 1) | |
1603 | { | |
1604 | const char *name; | |
1605 | char buf[SYMNMLEN + 1]; | |
1606 | struct coff_debug_merge_hash_entry *mh; | |
1607 | struct coff_debug_merge_type *mt; | |
1608 | union internal_auxent aux; | |
1609 | struct coff_debug_merge_element **epp; | |
1610 | bfd_byte *esl, *eslend; | |
1611 | struct internal_syment *islp; | |
986f0783 | 1612 | size_t amt; |
252b5132 RH |
1613 | |
1614 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1615 | if (name == NULL) | |
0a1b45a2 | 1616 | return false; |
252b5132 RH |
1617 | |
1618 | /* Ignore fake names invented by compiler; treat them all as | |
07d6d2b8 | 1619 | the same name. */ |
252b5132 | 1620 | if (*name == '~' || *name == '.' || *name == '$' |
8c8145a4 AM |
1621 | || (*name |
1622 | && *name == bfd_get_symbol_leading_char (input_bfd) | |
252b5132 RH |
1623 | && (name[1] == '~' || name[1] == '.' || name[1] == '$'))) |
1624 | name = ""; | |
1625 | ||
57402f1e | 1626 | mh = coff_debug_merge_hash_lookup (&flaginfo->debug_merge, name, |
0a1b45a2 | 1627 | true, true); |
252b5132 | 1628 | if (mh == NULL) |
0a1b45a2 | 1629 | return false; |
252b5132 RH |
1630 | |
1631 | /* Allocate memory to hold type information. If this turns | |
07d6d2b8 AM |
1632 | out to be a duplicate, we pass this address to |
1633 | bfd_release. */ | |
dc810e39 | 1634 | amt = sizeof (struct coff_debug_merge_type); |
a50b1753 | 1635 | mt = (struct coff_debug_merge_type *) bfd_alloc (input_bfd, amt); |
252b5132 | 1636 | if (mt == NULL) |
0a1b45a2 | 1637 | return false; |
96d56e9f | 1638 | mt->type_class = isym.n_sclass; |
252b5132 RH |
1639 | |
1640 | /* Pick up the aux entry, which points to the end of the tag | |
07d6d2b8 | 1641 | entries. */ |
8b956130 | 1642 | bfd_coff_swap_aux_in (input_bfd, (esym + isymesz), |
252b5132 | 1643 | isym.n_type, isym.n_sclass, 0, isym.n_numaux, |
8b956130 | 1644 | &aux); |
252b5132 RH |
1645 | |
1646 | /* Gather the elements. */ | |
1647 | epp = &mt->elements; | |
1648 | mt->elements = NULL; | |
1649 | islp = isymp + 2; | |
1650 | esl = esym + 2 * isymesz; | |
1651 | eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd) | |
a2c7ca15 | 1652 | + aux.x_sym.x_fcnary.x_fcn.x_endndx.u32 * isymesz); |
252b5132 RH |
1653 | while (esl < eslend) |
1654 | { | |
1655 | const char *elename; | |
1656 | char elebuf[SYMNMLEN + 1]; | |
00692651 | 1657 | char *name_copy; |
252b5132 | 1658 | |
8b956130 | 1659 | bfd_coff_swap_sym_in (input_bfd, esl, islp); |
252b5132 | 1660 | |
dc810e39 | 1661 | amt = sizeof (struct coff_debug_merge_element); |
a50b1753 | 1662 | *epp = (struct coff_debug_merge_element *) |
07d6d2b8 | 1663 | bfd_alloc (input_bfd, amt); |
252b5132 | 1664 | if (*epp == NULL) |
0a1b45a2 | 1665 | return false; |
252b5132 RH |
1666 | |
1667 | elename = _bfd_coff_internal_syment_name (input_bfd, islp, | |
1668 | elebuf); | |
1669 | if (elename == NULL) | |
0a1b45a2 | 1670 | return false; |
252b5132 | 1671 | |
dc810e39 | 1672 | amt = strlen (elename) + 1; |
a50b1753 | 1673 | name_copy = (char *) bfd_alloc (input_bfd, amt); |
00692651 | 1674 | if (name_copy == NULL) |
0a1b45a2 | 1675 | return false; |
00692651 | 1676 | strcpy (name_copy, elename); |
252b5132 | 1677 | |
00692651 | 1678 | (*epp)->name = name_copy; |
252b5132 RH |
1679 | (*epp)->type = islp->n_type; |
1680 | (*epp)->tagndx = 0; | |
1681 | if (islp->n_numaux >= 1 | |
1682 | && islp->n_type != T_NULL | |
1683 | && islp->n_sclass != C_EOS) | |
1684 | { | |
1685 | union internal_auxent eleaux; | |
1686 | long indx; | |
1687 | ||
8b956130 | 1688 | bfd_coff_swap_aux_in (input_bfd, (esl + isymesz), |
252b5132 | 1689 | islp->n_type, islp->n_sclass, 0, |
8b956130 | 1690 | islp->n_numaux, &eleaux); |
a2c7ca15 | 1691 | indx = eleaux.x_sym.x_tagndx.u32; |
252b5132 RH |
1692 | |
1693 | /* FIXME: If this tagndx entry refers to a symbol | |
1694 | defined later in this file, we just ignore it. | |
1695 | Handling this correctly would be tedious, and may | |
1696 | not be required. */ | |
252b5132 RH |
1697 | if (indx > 0 |
1698 | && (indx | |
1699 | < ((esym - | |
1700 | (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1701 | / (long) isymesz))) | |
1702 | { | |
57402f1e | 1703 | (*epp)->tagndx = flaginfo->sym_indices[indx]; |
252b5132 RH |
1704 | if ((*epp)->tagndx < 0) |
1705 | (*epp)->tagndx = 0; | |
1706 | } | |
1707 | } | |
1708 | epp = &(*epp)->next; | |
1709 | *epp = NULL; | |
1710 | ||
1711 | esl += (islp->n_numaux + 1) * isymesz; | |
1712 | islp += islp->n_numaux + 1; | |
1713 | } | |
1714 | ||
1715 | /* See if we already have a definition which matches this | |
07d6d2b8 AM |
1716 | type. We always output the type if it has no elements, |
1717 | for simplicity. */ | |
252b5132 | 1718 | if (mt->elements == NULL) |
8b956130 | 1719 | bfd_release (input_bfd, mt); |
252b5132 RH |
1720 | else |
1721 | { | |
1722 | struct coff_debug_merge_type *mtl; | |
1723 | ||
1724 | for (mtl = mh->types; mtl != NULL; mtl = mtl->next) | |
1725 | { | |
1726 | struct coff_debug_merge_element *me, *mel; | |
1727 | ||
96d56e9f | 1728 | if (mtl->type_class != mt->type_class) |
252b5132 RH |
1729 | continue; |
1730 | ||
1731 | for (me = mt->elements, mel = mtl->elements; | |
1732 | me != NULL && mel != NULL; | |
1733 | me = me->next, mel = mel->next) | |
1734 | { | |
1735 | if (strcmp (me->name, mel->name) != 0 | |
1736 | || me->type != mel->type | |
1737 | || me->tagndx != mel->tagndx) | |
1738 | break; | |
1739 | } | |
1740 | ||
1741 | if (me == NULL && mel == NULL) | |
1742 | break; | |
1743 | } | |
1744 | ||
1745 | if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base) | |
1746 | { | |
1747 | /* This is the first definition of this type. */ | |
1748 | mt->indx = output_index; | |
1749 | mt->next = mh->types; | |
1750 | mh->types = mt; | |
1751 | } | |
1752 | else | |
1753 | { | |
1754 | /* This is a redefinition which can be merged. */ | |
8b956130 | 1755 | bfd_release (input_bfd, mt); |
252b5132 RH |
1756 | *indexp = mtl->indx; |
1757 | add = (eslend - esym) / isymesz; | |
0a1b45a2 | 1758 | skip = true; |
252b5132 RH |
1759 | } |
1760 | } | |
1761 | } | |
1762 | ||
1763 | /* We now know whether we are to skip this symbol or not. */ | |
1764 | if (! skip) | |
1765 | { | |
1766 | /* Adjust the symbol in order to output it. */ | |
1767 | ||
1768 | if (isym._n._n_n._n_zeroes == 0 | |
1769 | && isym._n._n_n._n_offset != 0) | |
1770 | { | |
1771 | const char *name; | |
1772 | bfd_size_type indx; | |
1773 | ||
1774 | /* This symbol has a long name. Enter it in the string | |
1775 | table we are building. Note that we do not check | |
1776 | bfd_coff_symname_in_debug. That is only true for | |
1777 | XCOFF, and XCOFF requires different linking code | |
1778 | anyhow. */ | |
8b956130 | 1779 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, NULL); |
252b5132 | 1780 | if (name == NULL) |
0a1b45a2 | 1781 | return false; |
57402f1e | 1782 | indx = _bfd_stringtab_add (flaginfo->strtab, name, hash, copy); |
252b5132 | 1783 | if (indx == (bfd_size_type) -1) |
0a1b45a2 | 1784 | return false; |
252b5132 RH |
1785 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; |
1786 | } | |
1787 | ||
8add8e30 | 1788 | switch (isym.n_sclass) |
252b5132 | 1789 | { |
8add8e30 ILT |
1790 | case C_AUTO: |
1791 | case C_MOS: | |
1792 | case C_EOS: | |
1793 | case C_MOE: | |
1794 | case C_MOU: | |
1795 | case C_UNTAG: | |
1796 | case C_STRTAG: | |
1797 | case C_ENTAG: | |
1798 | case C_TPDEF: | |
1799 | case C_ARG: | |
1800 | case C_USTATIC: | |
1801 | case C_REG: | |
1802 | case C_REGPARM: | |
1803 | case C_FIELD: | |
1804 | /* The symbol value should not be modified. */ | |
1805 | break; | |
1806 | ||
1807 | case C_FCN: | |
1808 | if (obj_pe (input_bfd) | |
7bd8862c | 1809 | && memcmp (isym.n_name, ".bf", sizeof ".bf") != 0 |
8add8e30 ILT |
1810 | && isym.n_scnum > 0) |
1811 | { | |
1812 | /* For PE, .lf and .ef get their value left alone, | |
1813 | while .bf gets relocated. However, they all have | |
1814 | "real" section numbers, and need to be moved into | |
1815 | the new section. */ | |
1816 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1817 | break; | |
1818 | } | |
1819 | /* Fall through. */ | |
1820 | default: | |
1821 | case C_LABEL: /* Not completely sure about these 2 */ | |
1822 | case C_EXTDEF: | |
1823 | case C_BLOCK: | |
1824 | case C_EFCN: | |
1825 | case C_NULL: | |
1826 | case C_EXT: | |
1827 | case C_STAT: | |
1828 | case C_SECTION: | |
1829 | case C_NT_WEAK: | |
1830 | /* Compute new symbol location. */ | |
1831 | if (isym.n_scnum > 0) | |
1832 | { | |
1833 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1834 | isym.n_value += (*secpp)->output_offset; | |
1835 | if (! obj_pe (input_bfd)) | |
1836 | isym.n_value -= (*secpp)->vma; | |
57402f1e | 1837 | if (! obj_pe (flaginfo->output_bfd)) |
8add8e30 ILT |
1838 | isym.n_value += (*secpp)->output_section->vma; |
1839 | } | |
1840 | break; | |
1841 | ||
1842 | case C_FILE: | |
1843 | /* The value of a C_FILE symbol is the symbol index of | |
1844 | the next C_FILE symbol. The value of the last C_FILE | |
1845 | symbol is the symbol index to the first external | |
1846 | symbol (actually, coff_renumber_symbols does not get | |
1847 | this right--it just sets the value of the last C_FILE | |
1848 | symbol to zero--and nobody has ever complained about | |
1849 | it). We try to get this right, below, just before we | |
1850 | write the symbols out, but in the general case we may | |
1851 | have to write the symbol out twice. */ | |
57402f1e NC |
1852 | if (flaginfo->last_file_index != -1 |
1853 | && flaginfo->last_file.n_value != (bfd_vma) output_index) | |
252b5132 | 1854 | { |
8add8e30 | 1855 | /* We must correct the value of the last C_FILE |
07d6d2b8 | 1856 | entry. */ |
57402f1e NC |
1857 | flaginfo->last_file.n_value = output_index; |
1858 | if ((bfd_size_type) flaginfo->last_file_index >= syment_base) | |
252b5132 RH |
1859 | { |
1860 | /* The last C_FILE symbol is in this input file. */ | |
1861 | bfd_coff_swap_sym_out (output_bfd, | |
57402f1e NC |
1862 | &flaginfo->last_file, |
1863 | (flaginfo->outsyms | |
1864 | + ((flaginfo->last_file_index | |
8b956130 NC |
1865 | - syment_base) |
1866 | * osymesz))); | |
252b5132 RH |
1867 | } |
1868 | else | |
1869 | { | |
dc810e39 AM |
1870 | file_ptr pos; |
1871 | ||
252b5132 RH |
1872 | /* We have already written out the last C_FILE |
1873 | symbol. We need to write it out again. We | |
1874 | borrow *outsym temporarily. */ | |
1875 | bfd_coff_swap_sym_out (output_bfd, | |
57402f1e | 1876 | &flaginfo->last_file, outsym); |
dc810e39 | 1877 | pos = obj_sym_filepos (output_bfd); |
57402f1e | 1878 | pos += flaginfo->last_file_index * osymesz; |
dc810e39 | 1879 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
226f9f4f | 1880 | || bfd_write (outsym, osymesz, output_bfd) != osymesz) |
0a1b45a2 | 1881 | return false; |
252b5132 RH |
1882 | } |
1883 | } | |
1884 | ||
57402f1e NC |
1885 | flaginfo->last_file_index = output_index; |
1886 | flaginfo->last_file = isym; | |
8add8e30 | 1887 | break; |
252b5132 RH |
1888 | } |
1889 | ||
1890 | /* If doing task linking, convert normal global function symbols to | |
e4202681 | 1891 | static functions. */ |
57402f1e | 1892 | if (flaginfo->info->task_link && IS_EXTERNAL (input_bfd, isym)) |
252b5132 RH |
1893 | isym.n_sclass = C_STAT; |
1894 | ||
1895 | /* Output the symbol. */ | |
8b956130 | 1896 | bfd_coff_swap_sym_out (output_bfd, &isym, outsym); |
252b5132 RH |
1897 | |
1898 | *indexp = output_index; | |
1899 | ||
1900 | if (global) | |
1901 | { | |
1902 | long indx; | |
1903 | struct coff_link_hash_entry *h; | |
1904 | ||
1905 | indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1906 | / isymesz); | |
1907 | h = obj_coff_sym_hashes (input_bfd)[indx]; | |
1908 | if (h == NULL) | |
1909 | { | |
1910 | /* This can happen if there were errors earlier in | |
07d6d2b8 | 1911 | the link. */ |
252b5132 | 1912 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 1913 | return false; |
252b5132 RH |
1914 | } |
1915 | h->indx = output_index; | |
1916 | } | |
1917 | ||
1918 | output_index += add; | |
1919 | outsym += add * osymesz; | |
1920 | } | |
1921 | ||
1922 | esym += add * isymesz; | |
1923 | isymp += add; | |
1924 | ++secpp; | |
1925 | ++indexp; | |
1926 | for (--add; add > 0; --add) | |
1927 | { | |
1928 | *secpp++ = NULL; | |
1929 | *indexp++ = -1; | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | /* Fix up the aux entries. This must be done in a separate pass, | |
1934 | because we don't know the correct symbol indices until we have | |
1935 | already decided which symbols we are going to keep. */ | |
252b5132 RH |
1936 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); |
1937 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
57402f1e NC |
1938 | isymp = flaginfo->internal_syms; |
1939 | indexp = flaginfo->sym_indices; | |
252b5132 | 1940 | sym_hash = obj_coff_sym_hashes (input_bfd); |
57402f1e | 1941 | outsym = flaginfo->outsyms; |
8b956130 | 1942 | |
252b5132 RH |
1943 | while (esym < esym_end) |
1944 | { | |
1945 | int add; | |
1946 | ||
1947 | add = 1 + isymp->n_numaux; | |
1948 | ||
1949 | if ((*indexp < 0 | |
1950 | || (bfd_size_type) *indexp < syment_base) | |
1951 | && (*sym_hash == NULL | |
1952 | || (*sym_hash)->auxbfd != input_bfd)) | |
1953 | esym += add * isymesz; | |
1954 | else | |
1955 | { | |
1956 | struct coff_link_hash_entry *h; | |
1957 | int i; | |
1958 | ||
1959 | h = NULL; | |
1960 | if (*indexp < 0) | |
1961 | { | |
1962 | h = *sym_hash; | |
1963 | ||
1964 | /* The m68k-motorola-sysv assembler will sometimes | |
07d6d2b8 AM |
1965 | generate two symbols with the same name, but only one |
1966 | will have aux entries. */ | |
252b5132 | 1967 | BFD_ASSERT (isymp->n_numaux == 0 |
cfc9dfb1 | 1968 | || h->numaux == 0 |
252b5132 RH |
1969 | || h->numaux == isymp->n_numaux); |
1970 | } | |
1971 | ||
1972 | esym += isymesz; | |
1973 | ||
1974 | if (h == NULL) | |
1975 | outsym += osymesz; | |
1976 | ||
1977 | /* Handle the aux entries. This handling is based on | |
1978 | coff_pointerize_aux. I don't know if it always correct. */ | |
1979 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) | |
1980 | { | |
1981 | union internal_auxent aux; | |
1982 | union internal_auxent *auxp; | |
1983 | ||
cfc9dfb1 | 1984 | if (h != NULL && h->aux != NULL && (h->numaux > i)) |
252b5132 RH |
1985 | auxp = h->aux + i; |
1986 | else | |
1987 | { | |
8b956130 NC |
1988 | bfd_coff_swap_aux_in (input_bfd, esym, isymp->n_type, |
1989 | isymp->n_sclass, i, isymp->n_numaux, &aux); | |
252b5132 RH |
1990 | auxp = &aux; |
1991 | } | |
1992 | ||
1993 | if (isymp->n_sclass == C_FILE) | |
1994 | { | |
1995 | /* If this is a long filename, we must put it in the | |
1996 | string table. */ | |
e86fc4a5 CC |
1997 | if (auxp->x_file.x_n.x_n.x_zeroes == 0 |
1998 | && auxp->x_file.x_n.x_n.x_offset != 0) | |
252b5132 RH |
1999 | { |
2000 | const char *filename; | |
2001 | bfd_size_type indx; | |
2002 | ||
e86fc4a5 | 2003 | BFD_ASSERT (auxp->x_file.x_n.x_n.x_offset |
252b5132 RH |
2004 | >= STRING_SIZE_SIZE); |
2005 | if (strings == NULL) | |
2006 | { | |
2007 | strings = _bfd_coff_read_string_table (input_bfd); | |
2008 | if (strings == NULL) | |
0a1b45a2 | 2009 | return false; |
252b5132 | 2010 | } |
e86fc4a5 | 2011 | if ((bfd_size_type) auxp->x_file.x_n.x_n.x_offset >= obj_coff_strings_len (input_bfd)) |
5a3f568b NC |
2012 | filename = _("<corrupt>"); |
2013 | else | |
e86fc4a5 | 2014 | filename = strings + auxp->x_file.x_n.x_n.x_offset; |
57402f1e | 2015 | indx = _bfd_stringtab_add (flaginfo->strtab, filename, |
252b5132 RH |
2016 | hash, copy); |
2017 | if (indx == (bfd_size_type) -1) | |
0a1b45a2 | 2018 | return false; |
e86fc4a5 | 2019 | auxp->x_file.x_n.x_n.x_offset = STRING_SIZE_SIZE + indx; |
252b5132 RH |
2020 | } |
2021 | } | |
0c429e07 NC |
2022 | else if ((isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) |
2023 | && isymp->n_sclass != C_NT_WEAK) | |
252b5132 RH |
2024 | { |
2025 | unsigned long indx; | |
2026 | ||
2027 | if (ISFCN (isymp->n_type) | |
2028 | || ISTAG (isymp->n_sclass) | |
2029 | || isymp->n_sclass == C_BLOCK | |
2030 | || isymp->n_sclass == C_FCN) | |
2031 | { | |
a2c7ca15 | 2032 | indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.u32; |
252b5132 RH |
2033 | if (indx > 0 |
2034 | && indx < obj_raw_syment_count (input_bfd)) | |
2035 | { | |
2036 | /* We look forward through the symbol for | |
07d6d2b8 AM |
2037 | the index of the next symbol we are going |
2038 | to include. I don't know if this is | |
2039 | entirely right. */ | |
57402f1e NC |
2040 | while ((flaginfo->sym_indices[indx] < 0 |
2041 | || ((bfd_size_type) flaginfo->sym_indices[indx] | |
252b5132 RH |
2042 | < syment_base)) |
2043 | && indx < obj_raw_syment_count (input_bfd)) | |
2044 | ++indx; | |
2045 | if (indx >= obj_raw_syment_count (input_bfd)) | |
2046 | indx = output_index; | |
2047 | else | |
57402f1e | 2048 | indx = flaginfo->sym_indices[indx]; |
a2c7ca15 | 2049 | auxp->x_sym.x_fcnary.x_fcn.x_endndx.u32 = indx; |
252b5132 RH |
2050 | } |
2051 | } | |
2052 | ||
a2c7ca15 | 2053 | indx = auxp->x_sym.x_tagndx.u32; |
252b5132 RH |
2054 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) |
2055 | { | |
2056 | long symindx; | |
2057 | ||
57402f1e | 2058 | symindx = flaginfo->sym_indices[indx]; |
252b5132 | 2059 | if (symindx < 0) |
a2c7ca15 | 2060 | auxp->x_sym.x_tagndx.u32 = 0; |
252b5132 | 2061 | else |
a2c7ca15 | 2062 | auxp->x_sym.x_tagndx.u32 = symindx; |
252b5132 RH |
2063 | } |
2064 | ||
2065 | /* The .bf symbols are supposed to be linked through | |
2066 | the endndx field. We need to carry this list | |
2067 | across object files. */ | |
2068 | if (i == 0 | |
2069 | && h == NULL | |
2070 | && isymp->n_sclass == C_FCN | |
2071 | && (isymp->_n._n_n._n_zeroes != 0 | |
2072 | || isymp->_n._n_n._n_offset == 0) | |
2073 | && isymp->_n._n_name[0] == '.' | |
2074 | && isymp->_n._n_name[1] == 'b' | |
2075 | && isymp->_n._n_name[2] == 'f' | |
2076 | && isymp->_n._n_name[3] == '\0') | |
2077 | { | |
57402f1e | 2078 | if (flaginfo->last_bf_index != -1) |
252b5132 | 2079 | { |
a2c7ca15 | 2080 | flaginfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.u32 = |
252b5132 RH |
2081 | *indexp; |
2082 | ||
57402f1e | 2083 | if ((bfd_size_type) flaginfo->last_bf_index |
252b5132 RH |
2084 | >= syment_base) |
2085 | { | |
8b956130 | 2086 | void *auxout; |
252b5132 RH |
2087 | |
2088 | /* The last .bf symbol is in this input | |
2089 | file. This will only happen if the | |
2090 | assembler did not set up the .bf | |
2091 | endndx symbols correctly. */ | |
57402f1e NC |
2092 | auxout = (flaginfo->outsyms |
2093 | + ((flaginfo->last_bf_index | |
8b956130 NC |
2094 | - syment_base) |
2095 | * osymesz)); | |
2096 | ||
252b5132 | 2097 | bfd_coff_swap_aux_out (output_bfd, |
57402f1e | 2098 | &flaginfo->last_bf, |
252b5132 RH |
2099 | isymp->n_type, |
2100 | isymp->n_sclass, | |
2101 | 0, isymp->n_numaux, | |
2102 | auxout); | |
2103 | } | |
2104 | else | |
2105 | { | |
dc810e39 AM |
2106 | file_ptr pos; |
2107 | ||
252b5132 | 2108 | /* We have already written out the last |
07d6d2b8 AM |
2109 | .bf aux entry. We need to write it |
2110 | out again. We borrow *outsym | |
2111 | temporarily. FIXME: This case should | |
2112 | be made faster. */ | |
252b5132 | 2113 | bfd_coff_swap_aux_out (output_bfd, |
57402f1e | 2114 | &flaginfo->last_bf, |
252b5132 RH |
2115 | isymp->n_type, |
2116 | isymp->n_sclass, | |
2117 | 0, isymp->n_numaux, | |
8b956130 | 2118 | outsym); |
dc810e39 | 2119 | pos = obj_sym_filepos (output_bfd); |
57402f1e | 2120 | pos += flaginfo->last_bf_index * osymesz; |
dc810e39 | 2121 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
226f9f4f | 2122 | || (bfd_write (outsym, osymesz, output_bfd) |
dc810e39 | 2123 | != osymesz)) |
0a1b45a2 | 2124 | return false; |
252b5132 RH |
2125 | } |
2126 | } | |
2127 | ||
a2c7ca15 | 2128 | if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.u32 != 0) |
57402f1e | 2129 | flaginfo->last_bf_index = -1; |
252b5132 RH |
2130 | else |
2131 | { | |
2132 | /* The endndx field of this aux entry must | |
07d6d2b8 AM |
2133 | be updated with the symbol number of the |
2134 | next .bf symbol. */ | |
57402f1e NC |
2135 | flaginfo->last_bf = *auxp; |
2136 | flaginfo->last_bf_index = (((outsym - flaginfo->outsyms) | |
252b5132 RH |
2137 | / osymesz) |
2138 | + syment_base); | |
2139 | } | |
2140 | } | |
2141 | } | |
2142 | ||
2143 | if (h == NULL) | |
2144 | { | |
8b956130 | 2145 | bfd_coff_swap_aux_out (output_bfd, auxp, isymp->n_type, |
252b5132 | 2146 | isymp->n_sclass, i, isymp->n_numaux, |
8b956130 | 2147 | outsym); |
252b5132 RH |
2148 | outsym += osymesz; |
2149 | } | |
2150 | ||
2151 | esym += isymesz; | |
2152 | } | |
2153 | } | |
2154 | ||
2155 | indexp += add; | |
2156 | isymp += add; | |
2157 | sym_hash += add; | |
2158 | } | |
2159 | ||
2160 | /* Relocate the line numbers, unless we are stripping them. */ | |
57402f1e NC |
2161 | if (flaginfo->info->strip == strip_none |
2162 | || flaginfo->info->strip == strip_some) | |
252b5132 RH |
2163 | { |
2164 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2165 | { | |
2166 | bfd_vma offset; | |
2167 | bfd_byte *eline; | |
2168 | bfd_byte *elineend; | |
b545f675 | 2169 | bfd_byte *oeline; |
0a1b45a2 | 2170 | bool skipping; |
dc810e39 AM |
2171 | file_ptr pos; |
2172 | bfd_size_type amt; | |
252b5132 RH |
2173 | |
2174 | /* FIXME: If SEC_HAS_CONTENTS is not for the section, then | |
2175 | build_link_order in ldwrite.c will not have created a | |
2176 | link order, which means that we will not have seen this | |
2177 | input section in _bfd_coff_final_link, which means that | |
2178 | we will not have allocated space for the line numbers of | |
2179 | this section. I don't think line numbers can be | |
2180 | meaningful for a section which does not have | |
2181 | SEC_HAS_CONTENTS set, but, if they do, this must be | |
2182 | changed. */ | |
2183 | if (o->lineno_count == 0 | |
2184 | || (o->output_section->flags & SEC_HAS_CONTENTS) == 0) | |
2185 | continue; | |
2186 | ||
2187 | if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0 | |
226f9f4f | 2188 | || bfd_read (flaginfo->linenos, linesz * o->lineno_count, |
252b5132 | 2189 | input_bfd) != linesz * o->lineno_count) |
0a1b45a2 | 2190 | return false; |
252b5132 RH |
2191 | |
2192 | offset = o->output_section->vma + o->output_offset - o->vma; | |
57402f1e NC |
2193 | eline = flaginfo->linenos; |
2194 | oeline = flaginfo->linenos; | |
252b5132 | 2195 | elineend = eline + linesz * o->lineno_count; |
0a1b45a2 | 2196 | skipping = false; |
252b5132 RH |
2197 | for (; eline < elineend; eline += linesz) |
2198 | { | |
2199 | struct internal_lineno iline; | |
2200 | ||
8b956130 | 2201 | bfd_coff_swap_lineno_in (input_bfd, eline, &iline); |
252b5132 RH |
2202 | |
2203 | if (iline.l_lnno != 0) | |
2204 | iline.l_addr.l_paddr += offset; | |
2205 | else if (iline.l_addr.l_symndx >= 0 | |
2206 | && ((unsigned long) iline.l_addr.l_symndx | |
2207 | < obj_raw_syment_count (input_bfd))) | |
2208 | { | |
2209 | long indx; | |
2210 | ||
57402f1e | 2211 | indx = flaginfo->sym_indices[iline.l_addr.l_symndx]; |
252b5132 RH |
2212 | |
2213 | if (indx < 0) | |
2214 | { | |
2215 | /* These line numbers are attached to a symbol | |
b545f675 ILT |
2216 | which we are stripping. We must discard the |
2217 | line numbers because reading them back with | |
2218 | no associated symbol (or associating them all | |
2219 | with symbol #0) will fail. We can't regain | |
2220 | the space in the output file, but at least | |
2221 | they're dense. */ | |
0a1b45a2 | 2222 | skipping = true; |
252b5132 RH |
2223 | } |
2224 | else | |
2225 | { | |
2226 | struct internal_syment is; | |
2227 | union internal_auxent ia; | |
2228 | ||
2229 | /* Fix up the lnnoptr field in the aux entry of | |
2230 | the symbol. It turns out that we can't do | |
2231 | this when we modify the symbol aux entries, | |
2232 | because gas sometimes screws up the lnnoptr | |
2233 | field and makes it an offset from the start | |
2234 | of the line numbers rather than an absolute | |
2235 | file index. */ | |
2236 | bfd_coff_swap_sym_in (output_bfd, | |
57402f1e | 2237 | (flaginfo->outsyms |
8b956130 NC |
2238 | + ((indx - syment_base) |
2239 | * osymesz)), &is); | |
252b5132 RH |
2240 | if ((ISFCN (is.n_type) |
2241 | || is.n_sclass == C_BLOCK) | |
2242 | && is.n_numaux >= 1) | |
2243 | { | |
8b956130 | 2244 | void *auxptr; |
252b5132 | 2245 | |
57402f1e | 2246 | auxptr = (flaginfo->outsyms |
8b956130 NC |
2247 | + ((indx - syment_base + 1) |
2248 | * osymesz)); | |
252b5132 RH |
2249 | bfd_coff_swap_aux_in (output_bfd, auxptr, |
2250 | is.n_type, is.n_sclass, | |
8b956130 | 2251 | 0, is.n_numaux, &ia); |
252b5132 RH |
2252 | ia.x_sym.x_fcnary.x_fcn.x_lnnoptr = |
2253 | (o->output_section->line_filepos | |
2254 | + o->output_section->lineno_count * linesz | |
57402f1e | 2255 | + eline - flaginfo->linenos); |
8b956130 | 2256 | bfd_coff_swap_aux_out (output_bfd, &ia, |
252b5132 RH |
2257 | is.n_type, is.n_sclass, 0, |
2258 | is.n_numaux, auxptr); | |
2259 | } | |
b545f675 | 2260 | |
0a1b45a2 | 2261 | skipping = false; |
252b5132 RH |
2262 | } |
2263 | ||
2264 | iline.l_addr.l_symndx = indx; | |
2265 | } | |
2266 | ||
b545f675 | 2267 | if (!skipping) |
07d6d2b8 | 2268 | { |
8b956130 | 2269 | bfd_coff_swap_lineno_out (output_bfd, &iline, oeline); |
b545f675 ILT |
2270 | oeline += linesz; |
2271 | } | |
252b5132 RH |
2272 | } |
2273 | ||
dc810e39 AM |
2274 | pos = o->output_section->line_filepos; |
2275 | pos += o->output_section->lineno_count * linesz; | |
57402f1e | 2276 | amt = oeline - flaginfo->linenos; |
dc810e39 | 2277 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
226f9f4f | 2278 | || bfd_write (flaginfo->linenos, amt, output_bfd) != amt) |
0a1b45a2 | 2279 | return false; |
252b5132 | 2280 | |
dc810e39 | 2281 | o->output_section->lineno_count += amt / linesz; |
252b5132 RH |
2282 | } |
2283 | } | |
2284 | ||
2285 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE | |
2286 | symbol will be the first symbol in the next input file. In the | |
2287 | normal case, this will save us from writing out the C_FILE symbol | |
2288 | again. */ | |
57402f1e NC |
2289 | if (flaginfo->last_file_index != -1 |
2290 | && (bfd_size_type) flaginfo->last_file_index >= syment_base) | |
252b5132 | 2291 | { |
57402f1e NC |
2292 | flaginfo->last_file.n_value = output_index; |
2293 | bfd_coff_swap_sym_out (output_bfd, &flaginfo->last_file, | |
2294 | (flaginfo->outsyms | |
2295 | + ((flaginfo->last_file_index - syment_base) | |
8b956130 | 2296 | * osymesz))); |
252b5132 RH |
2297 | } |
2298 | ||
2299 | /* Write the modified symbols to the output file. */ | |
57402f1e | 2300 | if (outsym > flaginfo->outsyms) |
252b5132 | 2301 | { |
dc810e39 AM |
2302 | file_ptr pos; |
2303 | bfd_size_type amt; | |
2304 | ||
2305 | pos = obj_sym_filepos (output_bfd) + syment_base * osymesz; | |
57402f1e | 2306 | amt = outsym - flaginfo->outsyms; |
dc810e39 | 2307 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
226f9f4f | 2308 | || bfd_write (flaginfo->outsyms, amt, output_bfd) != amt) |
0a1b45a2 | 2309 | return false; |
252b5132 RH |
2310 | |
2311 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) | |
57402f1e | 2312 | + (outsym - flaginfo->outsyms) / osymesz) |
252b5132 RH |
2313 | == output_index); |
2314 | ||
2315 | obj_raw_syment_count (output_bfd) = output_index; | |
2316 | } | |
2317 | ||
2318 | /* Relocate the contents of each section. */ | |
2319 | adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx; | |
2320 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2321 | { | |
2322 | bfd_byte *contents; | |
2323 | struct coff_section_tdata *secdata; | |
2324 | ||
2325 | if (! o->linker_mark) | |
8b956130 NC |
2326 | /* This section was omitted from the link. */ |
2327 | continue; | |
252b5132 | 2328 | |
3722b82f AM |
2329 | if ((o->flags & SEC_LINKER_CREATED) != 0) |
2330 | continue; | |
2331 | ||
252b5132 | 2332 | if ((o->flags & SEC_HAS_CONTENTS) == 0 |
eea6121a | 2333 | || (o->size == 0 && (o->flags & SEC_RELOC) == 0)) |
252b5132 RH |
2334 | { |
2335 | if ((o->flags & SEC_RELOC) != 0 | |
2336 | && o->reloc_count != 0) | |
2337 | { | |
4eca0228 | 2338 | _bfd_error_handler |
695344c0 | 2339 | /* xgettext: c-format */ |
871b3ab2 | 2340 | (_("%pB: relocs in section `%pA', but it has no contents"), |
d003868e | 2341 | input_bfd, o); |
252b5132 | 2342 | bfd_set_error (bfd_error_no_contents); |
0a1b45a2 | 2343 | return false; |
252b5132 RH |
2344 | } |
2345 | ||
2346 | continue; | |
2347 | } | |
2348 | ||
2349 | secdata = coff_section_data (input_bfd, o); | |
2350 | if (secdata != NULL && secdata->contents != NULL) | |
2351 | contents = secdata->contents; | |
2352 | else | |
2353 | { | |
57402f1e | 2354 | contents = flaginfo->contents; |
a29a8af8 | 2355 | if (! bfd_get_full_section_contents (input_bfd, o, &contents)) |
0a1b45a2 | 2356 | return false; |
252b5132 RH |
2357 | } |
2358 | ||
2359 | if ((o->flags & SEC_RELOC) != 0) | |
2360 | { | |
2361 | int target_index; | |
2362 | struct internal_reloc *internal_relocs; | |
2363 | struct internal_reloc *irel; | |
2364 | ||
2365 | /* Read in the relocs. */ | |
2366 | target_index = o->output_section->target_index; | |
2367 | internal_relocs = (_bfd_coff_read_internal_relocs | |
0a1b45a2 | 2368 | (input_bfd, o, false, flaginfo->external_relocs, |
0e1862bb L |
2369 | bfd_link_relocatable (flaginfo->info), |
2370 | (bfd_link_relocatable (flaginfo->info) | |
57402f1e | 2371 | ? (flaginfo->section_info[target_index].relocs |
252b5132 | 2372 | + o->output_section->reloc_count) |
57402f1e | 2373 | : flaginfo->internal_relocs))); |
a29a8af8 KT |
2374 | if (internal_relocs == NULL |
2375 | && o->reloc_count > 0) | |
0a1b45a2 | 2376 | return false; |
252b5132 | 2377 | |
730035f7 DK |
2378 | /* Run through the relocs looking for relocs against symbols |
2379 | coming from discarded sections and complain about them. */ | |
2380 | irel = internal_relocs; | |
2381 | for (; irel < &internal_relocs[o->reloc_count]; irel++) | |
2382 | { | |
2383 | struct coff_link_hash_entry *h; | |
2384 | asection *ps = NULL; | |
2385 | long symndx = irel->r_symndx; | |
2386 | if (symndx < 0) | |
2387 | continue; | |
2388 | h = obj_coff_sym_hashes (input_bfd)[symndx]; | |
2389 | if (h == NULL) | |
2390 | continue; | |
2391 | while (h->root.type == bfd_link_hash_indirect | |
2392 | || h->root.type == bfd_link_hash_warning) | |
2393 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2394 | if (h->root.type == bfd_link_hash_defined | |
2395 | || h->root.type == bfd_link_hash_defweak) | |
2396 | ps = h->root.u.def.section; | |
2397 | if (ps == NULL) | |
2398 | continue; | |
2399 | /* Complain if definition comes from an excluded section. */ | |
2400 | if (ps->flags & SEC_EXCLUDE) | |
57402f1e | 2401 | (*flaginfo->info->callbacks->einfo) |
695344c0 | 2402 | /* xgettext: c-format */ |
871b3ab2 AM |
2403 | (_("%X`%s' referenced in section `%pA' of %pB: " |
2404 | "defined in discarded section `%pA' of %pB\n"), | |
730035f7 DK |
2405 | h->root.root.string, o, input_bfd, ps, ps->owner); |
2406 | } | |
2407 | ||
252b5132 | 2408 | /* Call processor specific code to relocate the section |
07d6d2b8 | 2409 | contents. */ |
57402f1e | 2410 | if (! bfd_coff_relocate_section (output_bfd, flaginfo->info, |
252b5132 RH |
2411 | input_bfd, o, |
2412 | contents, | |
2413 | internal_relocs, | |
57402f1e NC |
2414 | flaginfo->internal_syms, |
2415 | flaginfo->sec_ptrs)) | |
0a1b45a2 | 2416 | return false; |
252b5132 | 2417 | |
0e1862bb | 2418 | if (bfd_link_relocatable (flaginfo->info)) |
252b5132 RH |
2419 | { |
2420 | bfd_vma offset; | |
2421 | struct internal_reloc *irelend; | |
2422 | struct coff_link_hash_entry **rel_hash; | |
2423 | ||
2424 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2425 | irel = internal_relocs; | |
2426 | irelend = irel + o->reloc_count; | |
57402f1e | 2427 | rel_hash = (flaginfo->section_info[target_index].rel_hashes |
252b5132 RH |
2428 | + o->output_section->reloc_count); |
2429 | for (; irel < irelend; irel++, rel_hash++) | |
2430 | { | |
2431 | struct coff_link_hash_entry *h; | |
0a1b45a2 | 2432 | bool adjusted; |
252b5132 RH |
2433 | |
2434 | *rel_hash = NULL; | |
2435 | ||
2436 | /* Adjust the reloc address and symbol index. */ | |
252b5132 RH |
2437 | irel->r_vaddr += offset; |
2438 | ||
2439 | if (irel->r_symndx == -1) | |
2440 | continue; | |
2441 | ||
2442 | if (adjust_symndx) | |
2443 | { | |
57402f1e | 2444 | if (! (*adjust_symndx) (output_bfd, flaginfo->info, |
252b5132 RH |
2445 | input_bfd, o, irel, |
2446 | &adjusted)) | |
0a1b45a2 | 2447 | return false; |
252b5132 RH |
2448 | if (adjusted) |
2449 | continue; | |
2450 | } | |
2451 | ||
2452 | h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx]; | |
2453 | if (h != NULL) | |
2454 | { | |
2455 | /* This is a global symbol. */ | |
2456 | if (h->indx >= 0) | |
2457 | irel->r_symndx = h->indx; | |
2458 | else | |
2459 | { | |
2460 | /* This symbol is being written at the end | |
2461 | of the file, and we do not yet know the | |
2462 | symbol index. We save the pointer to the | |
2463 | hash table entry in the rel_hash list. | |
2464 | We set the indx field to -2 to indicate | |
2465 | that this symbol must not be stripped. */ | |
2466 | *rel_hash = h; | |
2467 | h->indx = -2; | |
2468 | } | |
2469 | } | |
2470 | else | |
2471 | { | |
2472 | long indx; | |
2473 | ||
57402f1e | 2474 | indx = flaginfo->sym_indices[irel->r_symndx]; |
252b5132 RH |
2475 | if (indx != -1) |
2476 | irel->r_symndx = indx; | |
2477 | else | |
2478 | { | |
2479 | struct internal_syment *is; | |
2480 | const char *name; | |
2481 | char buf[SYMNMLEN + 1]; | |
2482 | ||
2483 | /* This reloc is against a symbol we are | |
07d6d2b8 | 2484 | stripping. This should have been handled |
252b5132 | 2485 | by the 'dont_skip_symbol' code in the while |
244148ad | 2486 | loop at the top of this function. */ |
57402f1e | 2487 | is = flaginfo->internal_syms + irel->r_symndx; |
252b5132 RH |
2488 | |
2489 | name = (_bfd_coff_internal_syment_name | |
2490 | (input_bfd, is, buf)); | |
2491 | if (name == NULL) | |
0a1b45a2 | 2492 | return false; |
252b5132 | 2493 | |
1a72702b AM |
2494 | (*flaginfo->info->callbacks->unattached_reloc) |
2495 | (flaginfo->info, name, input_bfd, o, irel->r_vaddr); | |
252b5132 RH |
2496 | } |
2497 | } | |
2498 | } | |
2499 | ||
2500 | o->output_section->reloc_count += o->reloc_count; | |
2501 | } | |
2502 | } | |
2503 | ||
2504 | /* Write out the modified section contents. */ | |
2505 | if (secdata == NULL || secdata->stab_info == NULL) | |
2506 | { | |
61826503 | 2507 | file_ptr loc = (o->output_offset |
bb294208 | 2508 | * bfd_octets_per_byte (output_bfd, o)); |
252b5132 | 2509 | if (! bfd_set_section_contents (output_bfd, o->output_section, |
eea6121a | 2510 | contents, loc, o->size)) |
0a1b45a2 | 2511 | return false; |
252b5132 RH |
2512 | } |
2513 | else | |
2514 | { | |
2515 | if (! (_bfd_write_section_stabs | |
57402f1e | 2516 | (output_bfd, &coff_hash_table (flaginfo->info)->stab_info, |
252b5132 | 2517 | o, &secdata->stab_info, contents))) |
0a1b45a2 | 2518 | return false; |
252b5132 RH |
2519 | } |
2520 | } | |
2521 | ||
57402f1e | 2522 | if (! flaginfo->info->keep_memory |
8b956130 | 2523 | && ! _bfd_coff_free_symbols (input_bfd)) |
0a1b45a2 | 2524 | return false; |
252b5132 | 2525 | |
0a1b45a2 | 2526 | return true; |
252b5132 RH |
2527 | } |
2528 | ||
7686d77d | 2529 | /* Write out a global symbol. Called via bfd_hash_traverse. */ |
252b5132 | 2530 | |
0a1b45a2 | 2531 | bool |
7686d77d | 2532 | _bfd_coff_write_global_sym (struct bfd_hash_entry *bh, void *data) |
252b5132 | 2533 | { |
7686d77d | 2534 | struct coff_link_hash_entry *h = (struct coff_link_hash_entry *) bh; |
57402f1e | 2535 | struct coff_final_link_info *flaginfo = (struct coff_final_link_info *) data; |
252b5132 RH |
2536 | bfd *output_bfd; |
2537 | struct internal_syment isym; | |
2538 | bfd_size_type symesz; | |
2539 | unsigned int i; | |
dc810e39 | 2540 | file_ptr pos; |
252b5132 | 2541 | |
57402f1e | 2542 | output_bfd = flaginfo->output_bfd; |
252b5132 | 2543 | |
e92d460e AM |
2544 | if (h->root.type == bfd_link_hash_warning) |
2545 | { | |
2546 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2547 | if (h->root.type == bfd_link_hash_new) | |
0a1b45a2 | 2548 | return true; |
e92d460e AM |
2549 | } |
2550 | ||
252b5132 | 2551 | if (h->indx >= 0) |
0a1b45a2 | 2552 | return true; |
252b5132 RH |
2553 | |
2554 | if (h->indx != -2 | |
57402f1e NC |
2555 | && (flaginfo->info->strip == strip_all |
2556 | || (flaginfo->info->strip == strip_some | |
2557 | && (bfd_hash_lookup (flaginfo->info->keep_hash, | |
0a1b45a2 | 2558 | h->root.root.string, false, false) |
252b5132 | 2559 | == NULL)))) |
0a1b45a2 | 2560 | return true; |
252b5132 RH |
2561 | |
2562 | switch (h->root.type) | |
2563 | { | |
2564 | default: | |
2565 | case bfd_link_hash_new: | |
e92d460e | 2566 | case bfd_link_hash_warning: |
252b5132 | 2567 | abort (); |
0a1b45a2 | 2568 | return false; |
252b5132 RH |
2569 | |
2570 | case bfd_link_hash_undefined: | |
75cfe082 | 2571 | if (h->indx == -3) |
0a1b45a2 | 2572 | return true; |
75cfe082 | 2573 | /* Fall through. */ |
252b5132 RH |
2574 | case bfd_link_hash_undefweak: |
2575 | isym.n_scnum = N_UNDEF; | |
2576 | isym.n_value = 0; | |
2577 | break; | |
2578 | ||
2579 | case bfd_link_hash_defined: | |
2580 | case bfd_link_hash_defweak: | |
2581 | { | |
2582 | asection *sec; | |
2583 | ||
2584 | sec = h->root.u.def.section->output_section; | |
2585 | if (bfd_is_abs_section (sec)) | |
2586 | isym.n_scnum = N_ABS; | |
2587 | else | |
2588 | isym.n_scnum = sec->target_index; | |
2589 | isym.n_value = (h->root.u.def.value | |
2590 | + h->root.u.def.section->output_offset); | |
57402f1e | 2591 | if (! obj_pe (flaginfo->output_bfd)) |
252b5132 | 2592 | isym.n_value += sec->vma; |
67b0f684 JB |
2593 | #ifdef BFD64 |
2594 | if (isym.n_value > (bfd_vma) 0xffffffff) | |
2595 | { | |
2596 | if (! h->root.linker_def) | |
f493c217 AM |
2597 | _bfd_error_handler |
2598 | (_("%pB: stripping non-representable symbol '%s' " | |
2599 | "(value 0x%" PRIx64 ")"), | |
2600 | output_bfd, h->root.root.string, isym.n_value); | |
0a1b45a2 | 2601 | return true; |
67b0f684 JB |
2602 | } |
2603 | #endif | |
252b5132 RH |
2604 | } |
2605 | break; | |
2606 | ||
2607 | case bfd_link_hash_common: | |
2608 | isym.n_scnum = N_UNDEF; | |
2609 | isym.n_value = h->root.u.c.size; | |
2610 | break; | |
2611 | ||
2612 | case bfd_link_hash_indirect: | |
252b5132 | 2613 | /* Just ignore these. They can't be handled anyhow. */ |
0a1b45a2 | 2614 | return true; |
252b5132 RH |
2615 | } |
2616 | ||
2617 | if (strlen (h->root.root.string) <= SYMNMLEN) | |
2618 | strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); | |
2619 | else | |
2620 | { | |
0a1b45a2 | 2621 | bool hash; |
252b5132 RH |
2622 | bfd_size_type indx; |
2623 | ||
0a1b45a2 | 2624 | hash = true; |
b560e2ac | 2625 | if (flaginfo->info->traditional_format) |
0a1b45a2 | 2626 | hash = false; |
57402f1e | 2627 | indx = _bfd_stringtab_add (flaginfo->strtab, h->root.root.string, hash, |
0a1b45a2 | 2628 | false); |
252b5132 RH |
2629 | if (indx == (bfd_size_type) -1) |
2630 | { | |
0a1b45a2 AM |
2631 | flaginfo->failed = true; |
2632 | return false; | |
252b5132 RH |
2633 | } |
2634 | isym._n._n_n._n_zeroes = 0; | |
2635 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
2636 | } | |
2637 | ||
96d56e9f | 2638 | isym.n_sclass = h->symbol_class; |
252b5132 RH |
2639 | isym.n_type = h->type; |
2640 | ||
2641 | if (isym.n_sclass == C_NULL) | |
2642 | isym.n_sclass = C_EXT; | |
2643 | ||
2644 | /* If doing task linking and this is the pass where we convert | |
2645 | defined globals to statics, then do that conversion now. If the | |
2646 | symbol is not being converted, just ignore it and it will be | |
e4202681 | 2647 | output during a later pass. */ |
57402f1e | 2648 | if (flaginfo->global_to_static) |
252b5132 | 2649 | { |
e4202681 | 2650 | if (! IS_EXTERNAL (output_bfd, isym)) |
0a1b45a2 | 2651 | return true; |
e4202681 | 2652 | |
252b5132 RH |
2653 | isym.n_sclass = C_STAT; |
2654 | } | |
2655 | ||
5c4491d3 | 2656 | /* When a weak symbol is not overridden by a strong one, |
e4202681 | 2657 | turn it into an external symbol when not building a |
1049f94e | 2658 | shared or relocatable object. */ |
0e1862bb L |
2659 | if (! bfd_link_pic (flaginfo->info) |
2660 | && ! bfd_link_relocatable (flaginfo->info) | |
57402f1e | 2661 | && IS_WEAK_EXTERNAL (flaginfo->output_bfd, isym)) |
e4202681 NC |
2662 | isym.n_sclass = C_EXT; |
2663 | ||
252b5132 | 2664 | isym.n_numaux = h->numaux; |
244148ad | 2665 | |
57402f1e | 2666 | bfd_coff_swap_sym_out (output_bfd, &isym, flaginfo->outsyms); |
252b5132 RH |
2667 | |
2668 | symesz = bfd_coff_symesz (output_bfd); | |
2669 | ||
dc810e39 AM |
2670 | pos = obj_sym_filepos (output_bfd); |
2671 | pos += obj_raw_syment_count (output_bfd) * symesz; | |
2672 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
226f9f4f | 2673 | || bfd_write (flaginfo->outsyms, symesz, output_bfd) != symesz) |
252b5132 | 2674 | { |
0a1b45a2 AM |
2675 | flaginfo->failed = true; |
2676 | return false; | |
252b5132 RH |
2677 | } |
2678 | ||
2679 | h->indx = obj_raw_syment_count (output_bfd); | |
2680 | ||
2681 | ++obj_raw_syment_count (output_bfd); | |
2682 | ||
2c546cd8 ILT |
2683 | /* Write out any associated aux entries. Most of the aux entries |
2684 | will have been modified in _bfd_coff_link_input_bfd. We have to | |
2685 | handle section aux entries here, now that we have the final | |
2686 | relocation and line number counts. */ | |
252b5132 RH |
2687 | for (i = 0; i < isym.n_numaux; i++) |
2688 | { | |
2c546cd8 ILT |
2689 | union internal_auxent *auxp; |
2690 | ||
2691 | auxp = h->aux + i; | |
2692 | ||
2693 | /* Look for a section aux entry here using the same tests that | |
07d6d2b8 | 2694 | coff_swap_aux_out uses. */ |
2c546cd8 ILT |
2695 | if (i == 0 |
2696 | && (isym.n_sclass == C_STAT | |
2697 | || isym.n_sclass == C_HIDDEN) | |
2698 | && isym.n_type == T_NULL | |
2699 | && (h->root.type == bfd_link_hash_defined | |
2700 | || h->root.type == bfd_link_hash_defweak)) | |
2701 | { | |
2702 | asection *sec; | |
2703 | ||
2704 | sec = h->root.u.def.section->output_section; | |
2705 | if (sec != NULL) | |
2706 | { | |
eea6121a | 2707 | auxp->x_scn.x_scnlen = sec->size; |
2c546cd8 ILT |
2708 | |
2709 | /* For PE, an overflow on the final link reportedly does | |
07d6d2b8 | 2710 | not matter. FIXME: Why not? */ |
2c546cd8 ILT |
2711 | if (sec->reloc_count > 0xffff |
2712 | && (! obj_pe (output_bfd) | |
0e1862bb | 2713 | || bfd_link_relocatable (flaginfo->info))) |
4eca0228 | 2714 | _bfd_error_handler |
695344c0 | 2715 | /* xgettext: c-format */ |
871b3ab2 | 2716 | (_("%pB: %pA: reloc overflow: %#x > 0xffff"), |
dae82561 | 2717 | output_bfd, sec, sec->reloc_count); |
2c546cd8 ILT |
2718 | |
2719 | if (sec->lineno_count > 0xffff | |
2720 | && (! obj_pe (output_bfd) | |
0e1862bb | 2721 | || bfd_link_relocatable (flaginfo->info))) |
4eca0228 | 2722 | _bfd_error_handler |
695344c0 | 2723 | /* xgettext: c-format */ |
871b3ab2 | 2724 | (_("%pB: warning: %pA: line number overflow: %#x > 0xffff"), |
dae82561 | 2725 | output_bfd, sec, sec->lineno_count); |
2c546cd8 ILT |
2726 | |
2727 | auxp->x_scn.x_nreloc = sec->reloc_count; | |
2728 | auxp->x_scn.x_nlinno = sec->lineno_count; | |
2729 | auxp->x_scn.x_checksum = 0; | |
2730 | auxp->x_scn.x_associated = 0; | |
2731 | auxp->x_scn.x_comdat = 0; | |
2732 | } | |
2733 | } | |
2734 | ||
8b956130 | 2735 | bfd_coff_swap_aux_out (output_bfd, auxp, isym.n_type, |
dc810e39 | 2736 | isym.n_sclass, (int) i, isym.n_numaux, |
57402f1e | 2737 | flaginfo->outsyms); |
226f9f4f | 2738 | if (bfd_write (flaginfo->outsyms, symesz, output_bfd) != symesz) |
252b5132 | 2739 | { |
0a1b45a2 AM |
2740 | flaginfo->failed = true; |
2741 | return false; | |
252b5132 RH |
2742 | } |
2743 | ++obj_raw_syment_count (output_bfd); | |
2744 | } | |
2745 | ||
0a1b45a2 | 2746 | return true; |
252b5132 RH |
2747 | } |
2748 | ||
2749 | /* Write out task global symbols, converting them to statics. Called | |
2750 | via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do | |
244148ad | 2751 | the dirty work, if the symbol we are processing needs conversion. */ |
252b5132 | 2752 | |
0a1b45a2 | 2753 | bool |
8b956130 | 2754 | _bfd_coff_write_task_globals (struct coff_link_hash_entry *h, void *data) |
252b5132 | 2755 | { |
57402f1e | 2756 | struct coff_final_link_info *flaginfo = (struct coff_final_link_info *) data; |
0a1b45a2 AM |
2757 | bool rtnval = true; |
2758 | bool save_global_to_static; | |
252b5132 | 2759 | |
e92d460e AM |
2760 | if (h->root.type == bfd_link_hash_warning) |
2761 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2762 | ||
252b5132 RH |
2763 | if (h->indx < 0) |
2764 | { | |
2765 | switch (h->root.type) | |
2766 | { | |
2767 | case bfd_link_hash_defined: | |
2768 | case bfd_link_hash_defweak: | |
57402f1e | 2769 | save_global_to_static = flaginfo->global_to_static; |
0a1b45a2 | 2770 | flaginfo->global_to_static = true; |
7686d77d | 2771 | rtnval = _bfd_coff_write_global_sym (&h->root.root, data); |
57402f1e | 2772 | flaginfo->global_to_static = save_global_to_static; |
252b5132 RH |
2773 | break; |
2774 | default: | |
2775 | break; | |
2776 | } | |
2777 | } | |
2778 | return (rtnval); | |
2779 | } | |
2780 | ||
2781 | /* Handle a link order which is supposed to generate a reloc. */ | |
2782 | ||
0a1b45a2 | 2783 | bool |
8b956130 | 2784 | _bfd_coff_reloc_link_order (bfd *output_bfd, |
57402f1e | 2785 | struct coff_final_link_info *flaginfo, |
8b956130 NC |
2786 | asection *output_section, |
2787 | struct bfd_link_order *link_order) | |
252b5132 RH |
2788 | { |
2789 | reloc_howto_type *howto; | |
2790 | struct internal_reloc *irel; | |
2791 | struct coff_link_hash_entry **rel_hash_ptr; | |
2792 | ||
2793 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); | |
2794 | if (howto == NULL) | |
2795 | { | |
2796 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 2797 | return false; |
252b5132 RH |
2798 | } |
2799 | ||
2800 | if (link_order->u.reloc.p->addend != 0) | |
2801 | { | |
2802 | bfd_size_type size; | |
2803 | bfd_byte *buf; | |
2804 | bfd_reloc_status_type rstat; | |
0a1b45a2 | 2805 | bool ok; |
dc810e39 | 2806 | file_ptr loc; |
252b5132 RH |
2807 | |
2808 | size = bfd_get_reloc_size (howto); | |
a50b1753 | 2809 | buf = (bfd_byte *) bfd_zmalloc (size); |
6346d5ca | 2810 | if (buf == NULL && size != 0) |
0a1b45a2 | 2811 | return false; |
252b5132 RH |
2812 | |
2813 | rstat = _bfd_relocate_contents (howto, output_bfd, | |
bb294208 | 2814 | (bfd_vma) link_order->u.reloc.p->addend, |
dc810e39 | 2815 | buf); |
252b5132 RH |
2816 | switch (rstat) |
2817 | { | |
2818 | case bfd_reloc_ok: | |
2819 | break; | |
2820 | default: | |
2821 | case bfd_reloc_outofrange: | |
2822 | abort (); | |
2823 | case bfd_reloc_overflow: | |
1a72702b AM |
2824 | (*flaginfo->info->callbacks->reloc_overflow) |
2825 | (flaginfo->info, NULL, | |
2826 | (link_order->type == bfd_section_reloc_link_order | |
fd361982 | 2827 | ? bfd_section_name (link_order->u.reloc.p->u.section) |
1a72702b AM |
2828 | : link_order->u.reloc.p->u.name), |
2829 | howto->name, link_order->u.reloc.p->addend, | |
2830 | (bfd *) NULL, (asection *) NULL, (bfd_vma) 0); | |
252b5132 RH |
2831 | break; |
2832 | } | |
bb294208 AM |
2833 | loc = link_order->offset * bfd_octets_per_byte (output_bfd, |
2834 | output_section); | |
8b956130 | 2835 | ok = bfd_set_section_contents (output_bfd, output_section, buf, |
07d6d2b8 | 2836 | loc, size); |
252b5132 RH |
2837 | free (buf); |
2838 | if (! ok) | |
0a1b45a2 | 2839 | return false; |
252b5132 RH |
2840 | } |
2841 | ||
2842 | /* Store the reloc information in the right place. It will get | |
2843 | swapped and written out at the end of the final_link routine. */ | |
57402f1e | 2844 | irel = (flaginfo->section_info[output_section->target_index].relocs |
252b5132 | 2845 | + output_section->reloc_count); |
57402f1e | 2846 | rel_hash_ptr = (flaginfo->section_info[output_section->target_index].rel_hashes |
252b5132 RH |
2847 | + output_section->reloc_count); |
2848 | ||
2849 | memset (irel, 0, sizeof (struct internal_reloc)); | |
2850 | *rel_hash_ptr = NULL; | |
2851 | ||
2852 | irel->r_vaddr = output_section->vma + link_order->offset; | |
2853 | ||
2854 | if (link_order->type == bfd_section_reloc_link_order) | |
2855 | { | |
2856 | /* We need to somehow locate a symbol in the right section. The | |
07d6d2b8 AM |
2857 | symbol must either have a value of zero, or we must adjust |
2858 | the addend by the value of the symbol. FIXME: Write this | |
2859 | when we need it. The old linker couldn't handle this anyhow. */ | |
252b5132 RH |
2860 | abort (); |
2861 | *rel_hash_ptr = NULL; | |
2862 | irel->r_symndx = 0; | |
2863 | } | |
2864 | else | |
2865 | { | |
2866 | struct coff_link_hash_entry *h; | |
2867 | ||
2868 | h = ((struct coff_link_hash_entry *) | |
57402f1e | 2869 | bfd_wrapped_link_hash_lookup (output_bfd, flaginfo->info, |
252b5132 | 2870 | link_order->u.reloc.p->u.name, |
0a1b45a2 | 2871 | false, false, true)); |
252b5132 RH |
2872 | if (h != NULL) |
2873 | { | |
2874 | if (h->indx >= 0) | |
2875 | irel->r_symndx = h->indx; | |
2876 | else | |
2877 | { | |
2878 | /* Set the index to -2 to force this symbol to get | |
2879 | written out. */ | |
2880 | h->indx = -2; | |
2881 | *rel_hash_ptr = h; | |
2882 | irel->r_symndx = 0; | |
2883 | } | |
2884 | } | |
2885 | else | |
2886 | { | |
1a72702b AM |
2887 | (*flaginfo->info->callbacks->unattached_reloc) |
2888 | (flaginfo->info, link_order->u.reloc.p->u.name, | |
2889 | (bfd *) NULL, (asection *) NULL, (bfd_vma) 0); | |
252b5132 RH |
2890 | irel->r_symndx = 0; |
2891 | } | |
2892 | } | |
2893 | ||
2894 | /* FIXME: Is this always right? */ | |
2895 | irel->r_type = howto->type; | |
2896 | ||
2897 | /* r_size is only used on the RS/6000, which needs its own linker | |
2898 | routines anyhow. r_extern is only used for ECOFF. */ | |
2899 | ||
2900 | /* FIXME: What is the right value for r_offset? Is zero OK? */ | |
252b5132 RH |
2901 | ++output_section->reloc_count; |
2902 | ||
0a1b45a2 | 2903 | return true; |
252b5132 RH |
2904 | } |
2905 | ||
2906 | /* A basic reloc handling routine which may be used by processors with | |
2907 | simple relocs. */ | |
2908 | ||
0a1b45a2 | 2909 | bool |
8b956130 NC |
2910 | _bfd_coff_generic_relocate_section (bfd *output_bfd, |
2911 | struct bfd_link_info *info, | |
2912 | bfd *input_bfd, | |
2913 | asection *input_section, | |
2914 | bfd_byte *contents, | |
2915 | struct internal_reloc *relocs, | |
2916 | struct internal_syment *syms, | |
2917 | asection **sections) | |
252b5132 RH |
2918 | { |
2919 | struct internal_reloc *rel; | |
2920 | struct internal_reloc *relend; | |
2921 | ||
2922 | rel = relocs; | |
2923 | relend = rel + input_section->reloc_count; | |
2924 | for (; rel < relend; rel++) | |
2925 | { | |
2926 | long symndx; | |
2927 | struct coff_link_hash_entry *h; | |
2928 | struct internal_syment *sym; | |
2929 | bfd_vma addend; | |
2930 | bfd_vma val; | |
3a062fa1 | 2931 | asection *sec; |
252b5132 RH |
2932 | reloc_howto_type *howto; |
2933 | bfd_reloc_status_type rstat; | |
2934 | ||
2935 | symndx = rel->r_symndx; | |
2936 | ||
2937 | if (symndx == -1) | |
2938 | { | |
2939 | h = NULL; | |
2940 | sym = NULL; | |
2941 | } | |
75987f83 ILT |
2942 | else if (symndx < 0 |
2943 | || (unsigned long) symndx >= obj_raw_syment_count (input_bfd)) | |
2944 | { | |
4eca0228 | 2945 | _bfd_error_handler |
695344c0 | 2946 | /* xgettext: c-format */ |
871b3ab2 | 2947 | (_("%pB: illegal symbol index %ld in relocs"), input_bfd, symndx); |
0a1b45a2 | 2948 | return false; |
75987f83 | 2949 | } |
252b5132 | 2950 | else |
244148ad | 2951 | { |
252b5132 RH |
2952 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
2953 | sym = syms + symndx; | |
2954 | } | |
2955 | ||
2956 | /* COFF treats common symbols in one of two ways. Either the | |
07d6d2b8 AM |
2957 | size of the symbol is included in the section contents, or it |
2958 | is not. We assume that the size is not included, and force | |
2959 | the rtype_to_howto function to adjust the addend as needed. */ | |
252b5132 RH |
2960 | if (sym != NULL && sym->n_scnum != 0) |
2961 | addend = - sym->n_value; | |
2962 | else | |
2963 | addend = 0; | |
2964 | ||
252b5132 RH |
2965 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
2966 | sym, &addend); | |
2967 | if (howto == NULL) | |
0a1b45a2 | 2968 | return false; |
252b5132 | 2969 | |
1049f94e | 2970 | /* If we are doing a relocatable link, then we can just ignore |
07d6d2b8 AM |
2971 | a PC relative reloc that is pcrel_offset. It will already |
2972 | have the correct value. If this is not a relocatable link, | |
2973 | then we should ignore the symbol value. */ | |
252b5132 RH |
2974 | if (howto->pc_relative && howto->pcrel_offset) |
2975 | { | |
0e1862bb | 2976 | if (bfd_link_relocatable (info)) |
252b5132 RH |
2977 | continue; |
2978 | if (sym != NULL && sym->n_scnum != 0) | |
2979 | addend += sym->n_value; | |
2980 | } | |
2981 | ||
2982 | val = 0; | |
3a062fa1 | 2983 | sec = NULL; |
252b5132 RH |
2984 | if (h == NULL) |
2985 | { | |
252b5132 RH |
2986 | if (symndx == -1) |
2987 | { | |
2988 | sec = bfd_abs_section_ptr; | |
2989 | val = 0; | |
2990 | } | |
2991 | else | |
2992 | { | |
2993 | sec = sections[symndx]; | |
26c62da0 LW |
2994 | |
2995 | /* PR 19623: Relocations against symbols in | |
38c917d8 AM |
2996 | the absolute sections should ignored. |
2997 | PR 29807: Also ignore relocs against file symbols or | |
2998 | other such nonsense in fuzzed objects. */ | |
2999 | if (sec == NULL || bfd_is_abs_section (sec)) | |
26c62da0 LW |
3000 | continue; |
3001 | ||
07d6d2b8 | 3002 | val = (sec->output_section->vma |
252b5132 RH |
3003 | + sec->output_offset |
3004 | + sym->n_value); | |
3005 | if (! obj_pe (input_bfd)) | |
3006 | val -= sec->vma; | |
3007 | } | |
3008 | } | |
3009 | else | |
3010 | { | |
3011 | if (h->root.type == bfd_link_hash_defined | |
f3d8ae90 | 3012 | /* Defined weak symbols are a GNU extension. */ |
252b5132 RH |
3013 | || h->root.type == bfd_link_hash_defweak) |
3014 | { | |
252b5132 | 3015 | sec = h->root.u.def.section; |
f3d8ae90 | 3016 | BFD_ASSERT (sec->output_section != NULL); |
252b5132 RH |
3017 | val = (h->root.u.def.value |
3018 | + sec->output_section->vma | |
3019 | + sec->output_offset); | |
c87db184 | 3020 | } |
252b5132 | 3021 | |
bc7a577d | 3022 | else if (h->root.type == bfd_link_hash_undefweak) |
c87db184 | 3023 | { |
07d6d2b8 | 3024 | if (h->symbol_class == C_NT_WEAK && h->numaux == 1) |
c87db184 CF |
3025 | { |
3026 | /* See _Microsoft Portable Executable and Common Object | |
07d6d2b8 | 3027 | File Format Specification_, section 5.5.3. |
0c429e07 NC |
3028 | Note that weak symbols without aux records are a GNU |
3029 | extension. | |
3030 | FIXME: All weak externals are treated as having | |
27198fa9 DS |
3031 | characteristic IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY (1). |
3032 | These behave as per SVR4 ABI: A library member | |
3033 | will resolve a weak external only if a normal | |
3034 | external causes the library member to be linked. | |
3035 | See also linker.c: generic_link_check_archive_element. */ | |
c87db184 | 3036 | struct coff_link_hash_entry *h2 = |
a2c7ca15 AM |
3037 | h->auxbfd->tdata.coff_obj_data->sym_hashes |
3038 | [h->aux->x_sym.x_tagndx.u32]; | |
c87db184 | 3039 | |
0c429e07 NC |
3040 | if (!h2 || h2->root.type == bfd_link_hash_undefined) |
3041 | { | |
3042 | sec = bfd_abs_section_ptr; | |
3043 | val = 0; | |
3044 | } | |
3045 | else | |
3046 | { | |
3047 | sec = h2->root.u.def.section; | |
3048 | val = h2->root.u.def.value | |
3049 | + sec->output_section->vma + sec->output_offset; | |
3050 | } | |
c87db184 CF |
3051 | } |
3052 | else | |
07d6d2b8 | 3053 | /* This is a GNU extension. */ |
c87db184 CF |
3054 | val = 0; |
3055 | } | |
bc7a577d | 3056 | |
0e1862bb | 3057 | else if (! bfd_link_relocatable (info)) |
6194b866 NC |
3058 | { |
3059 | (*info->callbacks->undefined_symbol) | |
3060 | (info, h->root.root.string, input_bfd, input_section, | |
0a1b45a2 | 3061 | rel->r_vaddr - input_section->vma, true); |
6194b866 NC |
3062 | /* Stop the linker from issueing errors about truncated relocs |
3063 | referencing this undefined symbol by giving it an address | |
3064 | that should be in range. */ | |
3065 | val = input_section->output_section->vma; | |
3066 | } | |
252b5132 RH |
3067 | } |
3068 | ||
3a062fa1 AM |
3069 | /* If the input section defining the symbol has been discarded |
3070 | then zero this reloc field. */ | |
3071 | if (sec != NULL && discarded_section (sec)) | |
3072 | { | |
3073 | _bfd_clear_contents (howto, input_bfd, input_section, | |
0930cb30 | 3074 | contents, rel->r_vaddr - input_section->vma); |
3a062fa1 AM |
3075 | continue; |
3076 | } | |
3077 | ||
252b5132 RH |
3078 | if (info->base_file) |
3079 | { | |
244148ad | 3080 | /* Emit a reloc if the backend thinks it needs it. */ |
252b5132 RH |
3081 | if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto)) |
3082 | { | |
3083 | /* Relocation to a symbol in a section which isn't | |
3084 | absolute. We output the address here to a file. | |
3085 | This file is then read by dlltool when generating the | |
3086 | reloc section. Note that the base file is not | |
d078078d KT |
3087 | portable between systems. We write out a bfd_vma here, |
3088 | and dlltool reads in a bfd_vma. */ | |
3089 | bfd_vma addr = (rel->r_vaddr | |
244148ad KH |
3090 | - input_section->vma |
3091 | + input_section->output_offset | |
252b5132 | 3092 | + input_section->output_section->vma); |
10df41b1 | 3093 | if (obj_pe (output_bfd)) |
252b5132 | 3094 | addr -= pe_data(output_bfd)->pe_opthdr.ImageBase; |
d078078d KT |
3095 | if (fwrite (&addr, 1, sizeof (bfd_vma), (FILE *) info->base_file) |
3096 | != sizeof (bfd_vma)) | |
252b5132 RH |
3097 | { |
3098 | bfd_set_error (bfd_error_system_call); | |
0a1b45a2 | 3099 | return false; |
252b5132 RH |
3100 | } |
3101 | } | |
3102 | } | |
244148ad | 3103 | |
252b5132 RH |
3104 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3105 | contents, | |
3106 | rel->r_vaddr - input_section->vma, | |
3107 | val, addend); | |
3108 | ||
3109 | switch (rstat) | |
3110 | { | |
3111 | default: | |
3112 | abort (); | |
3113 | case bfd_reloc_ok: | |
3114 | break; | |
3115 | case bfd_reloc_outofrange: | |
4eca0228 | 3116 | _bfd_error_handler |
695344c0 | 3117 | /* xgettext: c-format */ |
2dcf00ce AM |
3118 | (_("%pB: bad reloc address %#" PRIx64 " in section `%pA'"), |
3119 | input_bfd, (uint64_t) rel->r_vaddr, input_section); | |
0a1b45a2 | 3120 | return false; |
252b5132 RH |
3121 | case bfd_reloc_overflow: |
3122 | { | |
74edb473 TC |
3123 | /* Ignore any weak undef symbols that may have overflowed. Due to |
3124 | PR ld/19011 the base address is now in the upper 64-bit address | |
3125 | range. This means that when _bfd_final_link_relocate calculates | |
3126 | the overlow it takes the distance between the symbol and the VMA | |
3127 | which will now always overflow as 0 - 64-bit addr > 32-bit range | |
3128 | of the relocation. This ends up creating PR ld/26659. */ | |
3129 | if (val == 0 | |
3130 | /* Reverse the hack where 4 is subtracted from the addend. */ | |
3131 | && (addend + 4) == 0 | |
3132 | && sym->n_sclass == C_NT_WEAK | |
3133 | && bfd_coff_classify_symbol (output_bfd, sym) | |
3134 | == COFF_SYMBOL_UNDEFINED) | |
3135 | break; | |
3136 | ||
252b5132 RH |
3137 | const char *name; |
3138 | char buf[SYMNMLEN + 1]; | |
3139 | ||
3140 | if (symndx == -1) | |
3141 | name = "*ABS*"; | |
3142 | else if (h != NULL) | |
dfeffb9f | 3143 | name = NULL; |
252b5132 RH |
3144 | else |
3145 | { | |
3146 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
3147 | if (name == NULL) | |
0a1b45a2 | 3148 | return false; |
252b5132 RH |
3149 | } |
3150 | ||
1a72702b AM |
3151 | (*info->callbacks->reloc_overflow) |
3152 | (info, (h ? &h->root : NULL), name, howto->name, | |
3153 | (bfd_vma) 0, input_bfd, input_section, | |
3154 | rel->r_vaddr - input_section->vma); | |
252b5132 RH |
3155 | } |
3156 | } | |
3157 | } | |
f3d8ae90 | 3158 | |
0a1b45a2 | 3159 | return true; |
252b5132 | 3160 | } |