Commit | Line | Data |
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252b5132 | 1 | /* COFF specific linker code. |
250d07de | 2 | Copyright (C) 1994-2021 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 | ||
92 | /* Initialize a COFF linker hash table. */ | |
93 | ||
0a1b45a2 | 94 | bool |
8b956130 NC |
95 | _bfd_coff_link_hash_table_init (struct coff_link_hash_table *table, |
96 | bfd *abfd, | |
97 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
98 | struct bfd_hash_table *, | |
66eb6687 AM |
99 | const char *), |
100 | unsigned int entsize) | |
252b5132 | 101 | { |
3722b82f | 102 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
66eb6687 | 103 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
252b5132 RH |
104 | } |
105 | ||
106 | /* Create a COFF linker hash table. */ | |
107 | ||
108 | struct bfd_link_hash_table * | |
8b956130 | 109 | _bfd_coff_link_hash_table_create (bfd *abfd) |
252b5132 RH |
110 | { |
111 | struct coff_link_hash_table *ret; | |
986f0783 | 112 | size_t amt = sizeof (struct coff_link_hash_table); |
252b5132 | 113 | |
a50b1753 | 114 | ret = (struct coff_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
115 | if (ret == NULL) |
116 | return NULL; | |
8b956130 | 117 | |
252b5132 | 118 | if (! _bfd_coff_link_hash_table_init (ret, abfd, |
66eb6687 AM |
119 | _bfd_coff_link_hash_newfunc, |
120 | sizeof (struct coff_link_hash_entry))) | |
252b5132 | 121 | { |
e2d34d7d | 122 | free (ret); |
252b5132 RH |
123 | return (struct bfd_link_hash_table *) NULL; |
124 | } | |
125 | return &ret->root; | |
126 | } | |
127 | ||
128 | /* Create an entry in a COFF debug merge hash table. */ | |
129 | ||
130 | struct bfd_hash_entry * | |
8b956130 NC |
131 | _bfd_coff_debug_merge_hash_newfunc (struct bfd_hash_entry *entry, |
132 | struct bfd_hash_table *table, | |
133 | const char *string) | |
252b5132 RH |
134 | { |
135 | struct coff_debug_merge_hash_entry *ret = | |
136 | (struct coff_debug_merge_hash_entry *) entry; | |
137 | ||
138 | /* Allocate the structure if it has not already been allocated by a | |
139 | subclass. */ | |
140 | if (ret == (struct coff_debug_merge_hash_entry *) NULL) | |
141 | ret = ((struct coff_debug_merge_hash_entry *) | |
142 | bfd_hash_allocate (table, | |
143 | sizeof (struct coff_debug_merge_hash_entry))); | |
144 | if (ret == (struct coff_debug_merge_hash_entry *) NULL) | |
145 | return (struct bfd_hash_entry *) ret; | |
146 | ||
147 | /* Call the allocation method of the superclass. */ | |
148 | ret = ((struct coff_debug_merge_hash_entry *) | |
149 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
150 | if (ret != (struct coff_debug_merge_hash_entry *) NULL) | |
151 | { | |
152 | /* Set local fields. */ | |
153 | ret->types = NULL; | |
154 | } | |
155 | ||
156 | return (struct bfd_hash_entry *) ret; | |
157 | } | |
158 | ||
159 | /* Given a COFF BFD, add symbols to the global hash table as | |
160 | appropriate. */ | |
161 | ||
0a1b45a2 | 162 | bool |
8b956130 | 163 | _bfd_coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
164 | { |
165 | switch (bfd_get_format (abfd)) | |
166 | { | |
167 | case bfd_object: | |
168 | return coff_link_add_object_symbols (abfd, info); | |
169 | case bfd_archive: | |
8b956130 NC |
170 | return _bfd_generic_link_add_archive_symbols |
171 | (abfd, info, coff_link_check_archive_element); | |
252b5132 RH |
172 | default: |
173 | bfd_set_error (bfd_error_wrong_format); | |
0a1b45a2 | 174 | return false; |
252b5132 RH |
175 | } |
176 | } | |
177 | ||
178 | /* Add symbols from a COFF object file. */ | |
179 | ||
0a1b45a2 | 180 | static bool |
8b956130 | 181 | coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
182 | { |
183 | if (! _bfd_coff_get_external_symbols (abfd)) | |
0a1b45a2 | 184 | return false; |
252b5132 | 185 | if (! coff_link_add_symbols (abfd, info)) |
0a1b45a2 | 186 | return false; |
252b5132 | 187 | |
8b956130 NC |
188 | if (! info->keep_memory |
189 | && ! _bfd_coff_free_symbols (abfd)) | |
0a1b45a2 | 190 | return false; |
252b5132 | 191 | |
0a1b45a2 | 192 | return true; |
252b5132 RH |
193 | } |
194 | ||
8b956130 NC |
195 | /* Check a single archive element to see if we need to include it in |
196 | the link. *PNEEDED is set according to whether this element is | |
197 | needed in the link or not. This is called via | |
198 | _bfd_generic_link_add_archive_symbols. */ | |
199 | ||
0a1b45a2 | 200 | static bool |
8b956130 NC |
201 | coff_link_check_archive_element (bfd *abfd, |
202 | struct bfd_link_info *info, | |
13e570f8 AM |
203 | struct bfd_link_hash_entry *h, |
204 | const char *name, | |
0a1b45a2 | 205 | bool *pneeded) |
8b956130 | 206 | { |
0a1b45a2 | 207 | *pneeded = false; |
5d3236ee | 208 | |
10556cdc NC |
209 | /* PR 22369 - Skip non COFF objects in the archive. */ |
210 | if (! bfd_family_coff (abfd)) | |
0a1b45a2 | 211 | return true; |
10556cdc | 212 | |
13e570f8 AM |
213 | /* We are only interested in symbols that are currently undefined. |
214 | If a symbol is currently known to be common, COFF linkers do not | |
215 | bring in an object file which defines it. */ | |
216 | if (h->type != bfd_link_hash_undefined) | |
0a1b45a2 | 217 | return true; |
8b956130 | 218 | |
75cfe082 AM |
219 | /* If the archive element has already been loaded then one |
220 | of the symbols defined by that element might have been | |
221 | made undefined due to being in a discarded section. */ | |
222 | if (((struct coff_link_hash_entry *) h)->indx == -3) | |
0a1b45a2 | 223 | return true; |
75cfe082 | 224 | |
b95a0a31 | 225 | /* Include this element? */ |
13e570f8 | 226 | if (!(*info->callbacks->add_archive_element) (info, abfd, name, &abfd)) |
0a1b45a2 AM |
227 | return true; |
228 | *pneeded = true; | |
8b956130 | 229 | |
0f4a61b4 | 230 | return bfd_link_add_symbols (abfd, info); |
8b956130 NC |
231 | } |
232 | ||
252b5132 RH |
233 | /* Add all the symbols from an object file to the hash table. */ |
234 | ||
0a1b45a2 | 235 | static bool |
8b956130 NC |
236 | coff_link_add_symbols (bfd *abfd, |
237 | struct bfd_link_info *info) | |
252b5132 | 238 | { |
b2d638c7 ILT |
239 | unsigned int n_tmask = coff_data (abfd)->local_n_tmask; |
240 | unsigned int n_btshft = coff_data (abfd)->local_n_btshft; | |
241 | unsigned int n_btmask = coff_data (abfd)->local_n_btmask; | |
0a1b45a2 AM |
242 | bool keep_syms; |
243 | bool default_copy; | |
252b5132 RH |
244 | bfd_size_type symcount; |
245 | struct coff_link_hash_entry **sym_hash; | |
246 | bfd_size_type symesz; | |
247 | bfd_byte *esym; | |
248 | bfd_byte *esym_end; | |
dc810e39 | 249 | bfd_size_type amt; |
252b5132 | 250 | |
d63388ff MS |
251 | symcount = obj_raw_syment_count (abfd); |
252 | ||
253 | if (symcount == 0) | |
0a1b45a2 | 254 | return true; /* Nothing to do. */ |
d63388ff | 255 | |
252b5132 RH |
256 | /* Keep the symbols during this function, in case the linker needs |
257 | to read the generic symbols in order to report an error message. */ | |
258 | keep_syms = obj_coff_keep_syms (abfd); | |
0a1b45a2 | 259 | obj_coff_keep_syms (abfd) = true; |
252b5132 | 260 | |
252b5132 | 261 | if (info->keep_memory) |
0a1b45a2 | 262 | default_copy = false; |
252b5132 | 263 | else |
0a1b45a2 | 264 | default_copy = true; |
252b5132 | 265 | |
252b5132 RH |
266 | /* We keep a list of the linker hash table entries that correspond |
267 | to particular symbols. */ | |
dc810e39 | 268 | amt = symcount * sizeof (struct coff_link_hash_entry *); |
a50b1753 | 269 | sym_hash = (struct coff_link_hash_entry **) bfd_zalloc (abfd, amt); |
d63388ff | 270 | if (sym_hash == NULL) |
252b5132 RH |
271 | goto error_return; |
272 | obj_coff_sym_hashes (abfd) = sym_hash; | |
252b5132 RH |
273 | |
274 | symesz = bfd_coff_symesz (abfd); | |
275 | BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); | |
276 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
277 | esym_end = esym + symcount * symesz; | |
278 | while (esym < esym_end) | |
279 | { | |
280 | struct internal_syment sym; | |
5d54c628 | 281 | enum coff_symbol_classification classification; |
0a1b45a2 | 282 | bool copy; |
252b5132 | 283 | |
8b956130 | 284 | bfd_coff_swap_sym_in (abfd, esym, &sym); |
252b5132 | 285 | |
5d54c628 ILT |
286 | classification = bfd_coff_classify_symbol (abfd, &sym); |
287 | if (classification != COFF_SYMBOL_LOCAL) | |
252b5132 RH |
288 | { |
289 | const char *name; | |
290 | char buf[SYMNMLEN + 1]; | |
291 | flagword flags; | |
292 | asection *section; | |
293 | bfd_vma value; | |
0a1b45a2 AM |
294 | bool addit; |
295 | bool discarded = false; | |
252b5132 RH |
296 | |
297 | /* This symbol is externally visible. */ | |
298 | ||
299 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
300 | if (name == NULL) | |
301 | goto error_return; | |
302 | ||
303 | /* We must copy the name into memory if we got it from the | |
07d6d2b8 | 304 | syment itself, rather than the string table. */ |
252b5132 RH |
305 | copy = default_copy; |
306 | if (sym._n._n_n._n_zeroes != 0 | |
307 | || sym._n._n_n._n_offset == 0) | |
0a1b45a2 | 308 | copy = true; |
252b5132 RH |
309 | |
310 | value = sym.n_value; | |
311 | ||
5d54c628 | 312 | switch (classification) |
252b5132 | 313 | { |
5d54c628 ILT |
314 | default: |
315 | abort (); | |
316 | ||
317 | case COFF_SYMBOL_GLOBAL: | |
252b5132 RH |
318 | flags = BSF_EXPORT | BSF_GLOBAL; |
319 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
2219ae0b | 320 | if (discarded_section (section)) |
75cfe082 | 321 | { |
0a1b45a2 | 322 | discarded = true; |
75cfe082 AM |
323 | section = bfd_und_section_ptr; |
324 | } | |
2219ae0b | 325 | else if (! obj_pe (abfd)) |
252b5132 | 326 | value -= section->vma; |
c77ec726 | 327 | break; |
5d54c628 ILT |
328 | |
329 | case COFF_SYMBOL_UNDEFINED: | |
330 | flags = 0; | |
331 | section = bfd_und_section_ptr; | |
332 | break; | |
333 | ||
334 | case COFF_SYMBOL_COMMON: | |
335 | flags = BSF_GLOBAL; | |
336 | section = bfd_com_section_ptr; | |
337 | break; | |
338 | ||
339 | case COFF_SYMBOL_PE_SECTION: | |
340 | flags = BSF_SECTION_SYM | BSF_GLOBAL; | |
341 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
2219ae0b L |
342 | if (discarded_section (section)) |
343 | section = bfd_und_section_ptr; | |
5d54c628 | 344 | break; |
252b5132 RH |
345 | } |
346 | ||
e4202681 | 347 | if (IS_WEAK_EXTERNAL (abfd, sym)) |
252b5132 RH |
348 | flags = BSF_WEAK; |
349 | ||
0a1b45a2 | 350 | addit = true; |
7fd9c191 ILT |
351 | |
352 | /* In the PE format, section symbols actually refer to the | |
07d6d2b8 AM |
353 | start of the output section. We handle them specially |
354 | here. */ | |
7fd9c191 ILT |
355 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) |
356 | { | |
357 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
0a1b45a2 | 358 | name, false, copy, false); |
7fd9c191 ILT |
359 | if (*sym_hash != NULL) |
360 | { | |
361 | if (((*sym_hash)->coff_link_hash_flags | |
362 | & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0 | |
363 | && (*sym_hash)->root.type != bfd_link_hash_undefined | |
364 | && (*sym_hash)->root.type != bfd_link_hash_undefweak) | |
4eca0228 | 365 | _bfd_error_handler |
59d08d6c | 366 | (_("warning: symbol `%s' is both section and non-section"), |
7fd9c191 ILT |
367 | name); |
368 | ||
0a1b45a2 | 369 | addit = false; |
7fd9c191 ILT |
370 | } |
371 | } | |
372 | ||
49147fca ILT |
373 | /* The Microsoft Visual C compiler does string pooling by |
374 | hashing the constants to an internal symbol name, and | |
08da05b0 | 375 | relying on the linker comdat support to discard |
49147fca ILT |
376 | duplicate names. However, if one string is a literal and |
377 | one is a data initializer, one will end up in the .data | |
378 | section and one will end up in the .rdata section. The | |
379 | Microsoft linker will combine them into the .data | |
380 | section, which seems to be wrong since it might cause the | |
381 | literal to change. | |
382 | ||
383 | As long as there are no external references to the | |
384 | symbols, which there shouldn't be, we can treat the .data | |
385 | and .rdata instances as separate symbols. The comdat | |
386 | code in the linker will do the appropriate merging. Here | |
387 | we avoid getting a multiple definition error for one of | |
388 | these special symbols. | |
389 | ||
390 | FIXME: I don't think this will work in the case where | |
391 | there are two object files which use the constants as a | |
392 | literal and two object files which use it as a data | |
393 | initializer. One or the other of the second object files | |
394 | is going to wind up with an inappropriate reference. */ | |
395 | if (obj_pe (abfd) | |
396 | && (classification == COFF_SYMBOL_GLOBAL | |
397 | || classification == COFF_SYMBOL_PE_SECTION) | |
271d0fc3 | 398 | && coff_section_data (abfd, section) != NULL |
082b7297 | 399 | && coff_section_data (abfd, section)->comdat != NULL |
08dedd66 | 400 | && startswith (name, "??_") |
082b7297 | 401 | && strcmp (name, coff_section_data (abfd, section)->comdat->name) == 0) |
49147fca ILT |
402 | { |
403 | if (*sym_hash == NULL) | |
404 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
0a1b45a2 | 405 | name, false, copy, false); |
49147fca ILT |
406 | if (*sym_hash != NULL |
407 | && (*sym_hash)->root.type == bfd_link_hash_defined | |
082b7297 L |
408 | && coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat != NULL |
409 | && strcmp (coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat->name, | |
410 | coff_section_data (abfd, section)->comdat->name) == 0) | |
0a1b45a2 | 411 | addit = false; |
49147fca ILT |
412 | } |
413 | ||
7fd9c191 ILT |
414 | if (addit) |
415 | { | |
416 | if (! (bfd_coff_link_add_one_symbol | |
417 | (info, abfd, name, flags, section, value, | |
0a1b45a2 | 418 | (const char *) NULL, copy, false, |
7fd9c191 ILT |
419 | (struct bfd_link_hash_entry **) sym_hash))) |
420 | goto error_return; | |
75cfe082 AM |
421 | |
422 | if (discarded) | |
423 | (*sym_hash)->indx = -3; | |
7fd9c191 ILT |
424 | } |
425 | ||
426 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) | |
427 | (*sym_hash)->coff_link_hash_flags |= | |
428 | COFF_LINK_HASH_PE_SECTION_SYMBOL; | |
252b5132 | 429 | |
2820a0b7 | 430 | /* Limit the alignment of a common symbol to the possible |
07d6d2b8 AM |
431 | alignment of a section. There is no point to permitting |
432 | a higher alignment for a common symbol: we can not | |
433 | guarantee it, and it may cause us to allocate extra space | |
434 | in the common section. */ | |
252b5132 RH |
435 | if (section == bfd_com_section_ptr |
436 | && (*sym_hash)->root.type == bfd_link_hash_common | |
437 | && ((*sym_hash)->root.u.c.p->alignment_power | |
438 | > bfd_coff_default_section_alignment_power (abfd))) | |
439 | (*sym_hash)->root.u.c.p->alignment_power | |
440 | = bfd_coff_default_section_alignment_power (abfd); | |
441 | ||
f13a99db | 442 | if (bfd_get_flavour (info->output_bfd) == bfd_get_flavour (abfd)) |
252b5132 | 443 | { |
5d3aaa74 | 444 | /* If we don't have any symbol information currently in |
07d6d2b8 AM |
445 | the hash table, or if we are looking at a symbol |
446 | definition, then update the symbol class and type in | |
447 | the hash table. */ | |
448 | if (((*sym_hash)->symbol_class == C_NULL | |
449 | && (*sym_hash)->type == T_NULL) | |
450 | || sym.n_scnum != 0 | |
451 | || (sym.n_value != 0 | |
452 | && (*sym_hash)->root.type != bfd_link_hash_defined | |
453 | && (*sym_hash)->root.type != bfd_link_hash_defweak)) | |
454 | { | |
455 | (*sym_hash)->symbol_class = sym.n_sclass; | |
456 | if (sym.n_type != T_NULL) | |
457 | { | |
458 | /* We want to warn if the type changed, but not | |
459 | if it changed from an unspecified type. | |
460 | Testing the whole type byte may work, but the | |
461 | change from (e.g.) a function of unspecified | |
462 | type to function of known type also wants to | |
463 | skip the warning. */ | |
464 | if ((*sym_hash)->type != T_NULL | |
465 | && (*sym_hash)->type != sym.n_type | |
466 | && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type) | |
467 | && (BTYPE ((*sym_hash)->type) == T_NULL | |
468 | || BTYPE (sym.n_type) == T_NULL))) | |
4eca0228 | 469 | _bfd_error_handler |
695344c0 | 470 | /* xgettext: c-format */ |
59d08d6c | 471 | (_("warning: type of symbol `%s' changed" |
871b3ab2 | 472 | " from %d to %d in %pB"), |
c08bb8dd | 473 | name, (*sym_hash)->type, sym.n_type, abfd); |
5d3aaa74 | 474 | |
07d6d2b8 AM |
475 | /* We don't want to change from a meaningful |
476 | base type to a null one, but if we know | |
477 | nothing, take what little we might now know. */ | |
478 | if (BTYPE (sym.n_type) != T_NULL | |
479 | || (*sym_hash)->type == T_NULL) | |
5d3aaa74 | 480 | (*sym_hash)->type = sym.n_type; |
07d6d2b8 AM |
481 | } |
482 | (*sym_hash)->auxbfd = abfd; | |
252b5132 RH |
483 | if (sym.n_numaux != 0) |
484 | { | |
485 | union internal_auxent *alloc; | |
486 | unsigned int i; | |
487 | bfd_byte *eaux; | |
488 | union internal_auxent *iaux; | |
489 | ||
490 | (*sym_hash)->numaux = sym.n_numaux; | |
491 | alloc = ((union internal_auxent *) | |
492 | bfd_hash_allocate (&info->hash->table, | |
493 | (sym.n_numaux | |
494 | * sizeof (*alloc)))); | |
495 | if (alloc == NULL) | |
496 | goto error_return; | |
497 | for (i = 0, eaux = esym + symesz, iaux = alloc; | |
498 | i < sym.n_numaux; | |
499 | i++, eaux += symesz, iaux++) | |
8b956130 | 500 | bfd_coff_swap_aux_in (abfd, eaux, sym.n_type, |
dc810e39 | 501 | sym.n_sclass, (int) i, |
8b956130 | 502 | sym.n_numaux, iaux); |
252b5132 RH |
503 | (*sym_hash)->aux = alloc; |
504 | } | |
505 | } | |
506 | } | |
5d54c628 ILT |
507 | |
508 | if (classification == COFF_SYMBOL_PE_SECTION | |
509 | && (*sym_hash)->numaux != 0) | |
510 | { | |
511 | /* Some PE sections (such as .bss) have a zero size in | |
07d6d2b8 AM |
512 | the section header, but a non-zero size in the AUX |
513 | record. Correct that here. | |
5d54c628 ILT |
514 | |
515 | FIXME: This is not at all the right place to do this. | |
516 | For example, it won't help objdump. This needs to be | |
517 | done when we swap in the section header. */ | |
5d54c628 | 518 | BFD_ASSERT ((*sym_hash)->numaux == 1); |
eea6121a AM |
519 | if (section->size == 0) |
520 | section->size = (*sym_hash)->aux[0].x_scn.x_scnlen; | |
5d54c628 ILT |
521 | |
522 | /* FIXME: We could test whether the section sizes | |
07d6d2b8 AM |
523 | matches the size in the aux entry, but apparently |
524 | that sometimes fails unexpectedly. */ | |
5d54c628 | 525 | } |
252b5132 RH |
526 | } |
527 | ||
528 | esym += (sym.n_numaux + 1) * symesz; | |
529 | sym_hash += sym.n_numaux + 1; | |
530 | } | |
531 | ||
1049f94e | 532 | /* If this is a non-traditional, non-relocatable link, try to |
252b5132 | 533 | optimize the handling of any .stab/.stabstr sections. */ |
0e1862bb | 534 | if (! bfd_link_relocatable (info) |
252b5132 | 535 | && ! info->traditional_format |
f13a99db | 536 | && bfd_get_flavour (info->output_bfd) == bfd_get_flavour (abfd) |
252b5132 RH |
537 | && (info->strip != strip_all && info->strip != strip_debugger)) |
538 | { | |
29ca8dc5 | 539 | asection *stabstr; |
252b5132 | 540 | |
29ca8dc5 | 541 | stabstr = bfd_get_section_by_name (abfd, ".stabstr"); |
252b5132 | 542 | |
29ca8dc5 NS |
543 | if (stabstr != NULL) |
544 | { | |
545 | bfd_size_type string_offset = 0; | |
546 | asection *stab; | |
68ffbac6 | 547 | |
29ca8dc5 | 548 | for (stab = abfd->sections; stab; stab = stab->next) |
08dedd66 | 549 | if (startswith (stab->name, ".stab") |
29ca8dc5 | 550 | && (!stab->name[5] |
a3aa4448 | 551 | || (stab->name[5] == '.' && ISDIGIT (stab->name[6])))) |
252b5132 RH |
552 | { |
553 | struct coff_link_hash_table *table; | |
29ca8dc5 NS |
554 | struct coff_section_tdata *secdata |
555 | = coff_section_data (abfd, stab); | |
68ffbac6 | 556 | |
252b5132 RH |
557 | if (secdata == NULL) |
558 | { | |
dc810e39 | 559 | amt = sizeof (struct coff_section_tdata); |
8b956130 | 560 | stab->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
561 | if (stab->used_by_bfd == NULL) |
562 | goto error_return; | |
563 | secdata = coff_section_data (abfd, stab); | |
564 | } | |
565 | ||
566 | table = coff_hash_table (info); | |
567 | ||
568 | if (! _bfd_link_section_stabs (abfd, &table->stab_info, | |
569 | stab, stabstr, | |
29ca8dc5 NS |
570 | &secdata->stab_info, |
571 | &string_offset)) | |
252b5132 RH |
572 | goto error_return; |
573 | } | |
574 | } | |
575 | } | |
576 | ||
577 | obj_coff_keep_syms (abfd) = keep_syms; | |
578 | ||
0a1b45a2 | 579 | return true; |
252b5132 RH |
580 | |
581 | error_return: | |
582 | obj_coff_keep_syms (abfd) = keep_syms; | |
0a1b45a2 | 583 | return false; |
252b5132 RH |
584 | } |
585 | \f | |
586 | /* Do the final link step. */ | |
587 | ||
0a1b45a2 | 588 | bool |
8b956130 NC |
589 | _bfd_coff_final_link (bfd *abfd, |
590 | struct bfd_link_info *info) | |
252b5132 RH |
591 | { |
592 | bfd_size_type symesz; | |
57402f1e | 593 | struct coff_final_link_info flaginfo; |
0a1b45a2 AM |
594 | bool debug_merge_allocated; |
595 | bool long_section_names; | |
252b5132 RH |
596 | asection *o; |
597 | struct bfd_link_order *p; | |
dc810e39 AM |
598 | bfd_size_type max_sym_count; |
599 | bfd_size_type max_lineno_count; | |
600 | bfd_size_type max_reloc_count; | |
601 | bfd_size_type max_output_reloc_count; | |
602 | bfd_size_type max_contents_size; | |
252b5132 RH |
603 | file_ptr rel_filepos; |
604 | unsigned int relsz; | |
605 | file_ptr line_filepos; | |
606 | unsigned int linesz; | |
607 | bfd *sub; | |
608 | bfd_byte *external_relocs = NULL; | |
609 | char strbuf[STRING_SIZE_SIZE]; | |
dc810e39 | 610 | bfd_size_type amt; |
252b5132 RH |
611 | |
612 | symesz = bfd_coff_symesz (abfd); | |
613 | ||
57402f1e NC |
614 | flaginfo.info = info; |
615 | flaginfo.output_bfd = abfd; | |
616 | flaginfo.strtab = NULL; | |
617 | flaginfo.section_info = NULL; | |
618 | flaginfo.last_file_index = -1; | |
619 | flaginfo.last_bf_index = -1; | |
620 | flaginfo.internal_syms = NULL; | |
621 | flaginfo.sec_ptrs = NULL; | |
622 | flaginfo.sym_indices = NULL; | |
623 | flaginfo.outsyms = NULL; | |
624 | flaginfo.linenos = NULL; | |
625 | flaginfo.contents = NULL; | |
626 | flaginfo.external_relocs = NULL; | |
627 | flaginfo.internal_relocs = NULL; | |
0a1b45a2 AM |
628 | flaginfo.global_to_static = false; |
629 | debug_merge_allocated = false; | |
252b5132 RH |
630 | |
631 | coff_data (abfd)->link_info = info; | |
632 | ||
57402f1e NC |
633 | flaginfo.strtab = _bfd_stringtab_init (); |
634 | if (flaginfo.strtab == NULL) | |
252b5132 RH |
635 | goto error_return; |
636 | ||
57402f1e | 637 | if (! coff_debug_merge_hash_table_init (&flaginfo.debug_merge)) |
252b5132 | 638 | goto error_return; |
0a1b45a2 | 639 | debug_merge_allocated = true; |
252b5132 RH |
640 | |
641 | /* Compute the file positions for all the sections. */ | |
642 | if (! abfd->output_has_begun) | |
643 | { | |
644 | if (! bfd_coff_compute_section_file_positions (abfd)) | |
645 | goto error_return; | |
646 | } | |
647 | ||
648 | /* Count the line numbers and relocation entries required for the | |
649 | output file. Set the file positions for the relocs. */ | |
650 | rel_filepos = obj_relocbase (abfd); | |
651 | relsz = bfd_coff_relsz (abfd); | |
652 | max_contents_size = 0; | |
653 | max_lineno_count = 0; | |
654 | max_reloc_count = 0; | |
655 | ||
0a1b45a2 | 656 | long_section_names = false; |
252b5132 RH |
657 | for (o = abfd->sections; o != NULL; o = o->next) |
658 | { | |
659 | o->reloc_count = 0; | |
660 | o->lineno_count = 0; | |
8423293d | 661 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
252b5132 RH |
662 | { |
663 | if (p->type == bfd_indirect_link_order) | |
664 | { | |
665 | asection *sec; | |
666 | ||
667 | sec = p->u.indirect.section; | |
668 | ||
669 | /* Mark all sections which are to be included in the | |
670 | link. This will normally be every section. We need | |
671 | to do this so that we can identify any sections which | |
672 | the linker has decided to not include. */ | |
0a1b45a2 | 673 | sec->linker_mark = true; |
252b5132 RH |
674 | |
675 | if (info->strip == strip_none | |
676 | || info->strip == strip_some) | |
677 | o->lineno_count += sec->lineno_count; | |
678 | ||
0e1862bb | 679 | if (bfd_link_relocatable (info)) |
252b5132 RH |
680 | o->reloc_count += sec->reloc_count; |
681 | ||
eea6121a AM |
682 | if (sec->rawsize > max_contents_size) |
683 | max_contents_size = sec->rawsize; | |
684 | if (sec->size > max_contents_size) | |
685 | max_contents_size = sec->size; | |
252b5132 RH |
686 | if (sec->lineno_count > max_lineno_count) |
687 | max_lineno_count = sec->lineno_count; | |
688 | if (sec->reloc_count > max_reloc_count) | |
689 | max_reloc_count = sec->reloc_count; | |
690 | } | |
0e1862bb | 691 | else if (bfd_link_relocatable (info) |
252b5132 RH |
692 | && (p->type == bfd_section_reloc_link_order |
693 | || p->type == bfd_symbol_reloc_link_order)) | |
694 | ++o->reloc_count; | |
695 | } | |
696 | if (o->reloc_count == 0) | |
697 | o->rel_filepos = 0; | |
698 | else | |
699 | { | |
700 | o->flags |= SEC_RELOC; | |
701 | o->rel_filepos = rel_filepos; | |
702 | rel_filepos += o->reloc_count * relsz; | |
e9168c1e MM |
703 | /* In PE COFF, if there are at least 0xffff relocations an |
704 | extra relocation will be written out to encode the count. */ | |
f717994f | 705 | if ((obj_pe (abfd) || obj_go32 (abfd)) && o->reloc_count >= 0xffff) |
e9168c1e | 706 | rel_filepos += relsz; |
252b5132 RH |
707 | } |
708 | ||
709 | if (bfd_coff_long_section_names (abfd) | |
710 | && strlen (o->name) > SCNNMLEN) | |
711 | { | |
712 | /* This section has a long name which must go in the string | |
07d6d2b8 AM |
713 | table. This must correspond to the code in |
714 | coff_write_object_contents which puts the string index | |
715 | into the s_name field of the section header. That is why | |
716 | we pass hash as FALSE. */ | |
0a1b45a2 | 717 | if (_bfd_stringtab_add (flaginfo.strtab, o->name, false, false) |
252b5132 RH |
718 | == (bfd_size_type) -1) |
719 | goto error_return; | |
0a1b45a2 | 720 | long_section_names = true; |
252b5132 RH |
721 | } |
722 | } | |
723 | ||
1049f94e | 724 | /* If doing a relocatable link, allocate space for the pointers we |
252b5132 | 725 | need to keep. */ |
0e1862bb | 726 | if (bfd_link_relocatable (info)) |
252b5132 RH |
727 | { |
728 | unsigned int i; | |
729 | ||
730 | /* We use section_count + 1, rather than section_count, because | |
07d6d2b8 | 731 | the target_index fields are 1 based. */ |
dc810e39 AM |
732 | amt = abfd->section_count + 1; |
733 | amt *= sizeof (struct coff_link_section_info); | |
57402f1e NC |
734 | flaginfo.section_info = (struct coff_link_section_info *) bfd_malloc (amt); |
735 | if (flaginfo.section_info == NULL) | |
252b5132 RH |
736 | goto error_return; |
737 | for (i = 0; i <= abfd->section_count; i++) | |
738 | { | |
57402f1e NC |
739 | flaginfo.section_info[i].relocs = NULL; |
740 | flaginfo.section_info[i].rel_hashes = NULL; | |
252b5132 RH |
741 | } |
742 | } | |
743 | ||
744 | /* We now know the size of the relocs, so we can determine the file | |
745 | positions of the line numbers. */ | |
746 | line_filepos = rel_filepos; | |
747 | linesz = bfd_coff_linesz (abfd); | |
748 | max_output_reloc_count = 0; | |
749 | for (o = abfd->sections; o != NULL; o = o->next) | |
750 | { | |
751 | if (o->lineno_count == 0) | |
752 | o->line_filepos = 0; | |
753 | else | |
754 | { | |
755 | o->line_filepos = line_filepos; | |
756 | line_filepos += o->lineno_count * linesz; | |
757 | } | |
758 | ||
759 | if (o->reloc_count != 0) | |
760 | { | |
761 | /* We don't know the indices of global symbols until we have | |
07d6d2b8 AM |
762 | written out all the local symbols. For each section in |
763 | the output file, we keep an array of pointers to hash | |
764 | table entries. Each entry in the array corresponds to a | |
765 | reloc. When we find a reloc against a global symbol, we | |
766 | set the corresponding entry in this array so that we can | |
767 | fix up the symbol index after we have written out all the | |
768 | local symbols. | |
252b5132 RH |
769 | |
770 | Because of this problem, we also keep the relocs in | |
771 | memory until the end of the link. This wastes memory, | |
1049f94e | 772 | but only when doing a relocatable link, which is not the |
252b5132 | 773 | common case. */ |
0e1862bb | 774 | BFD_ASSERT (bfd_link_relocatable (info)); |
dc810e39 AM |
775 | amt = o->reloc_count; |
776 | amt *= sizeof (struct internal_reloc); | |
57402f1e | 777 | flaginfo.section_info[o->target_index].relocs = |
07d6d2b8 | 778 | (struct internal_reloc *) bfd_malloc (amt); |
dc810e39 AM |
779 | amt = o->reloc_count; |
780 | amt *= sizeof (struct coff_link_hash_entry *); | |
57402f1e | 781 | flaginfo.section_info[o->target_index].rel_hashes = |
07d6d2b8 | 782 | (struct coff_link_hash_entry **) bfd_malloc (amt); |
57402f1e NC |
783 | if (flaginfo.section_info[o->target_index].relocs == NULL |
784 | || flaginfo.section_info[o->target_index].rel_hashes == NULL) | |
252b5132 RH |
785 | goto error_return; |
786 | ||
787 | if (o->reloc_count > max_output_reloc_count) | |
788 | max_output_reloc_count = o->reloc_count; | |
789 | } | |
790 | ||
791 | /* Reset the reloc and lineno counts, so that we can use them to | |
792 | count the number of entries we have output so far. */ | |
793 | o->reloc_count = 0; | |
794 | o->lineno_count = 0; | |
795 | } | |
796 | ||
797 | obj_sym_filepos (abfd) = line_filepos; | |
798 | ||
799 | /* Figure out the largest number of symbols in an input BFD. Take | |
800 | the opportunity to clear the output_has_begun fields of all the | |
801 | input BFD's. */ | |
802 | max_sym_count = 0; | |
c72f2fb2 | 803 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
252b5132 RH |
804 | { |
805 | size_t sz; | |
806 | ||
0a1b45a2 | 807 | sub->output_has_begun = false; |
e7ebb214 | 808 | sz = bfd_family_coff (sub) ? obj_raw_syment_count (sub) : 2; |
252b5132 RH |
809 | if (sz > max_sym_count) |
810 | max_sym_count = sz; | |
811 | } | |
812 | ||
813 | /* Allocate some buffers used while linking. */ | |
dc810e39 | 814 | amt = max_sym_count * sizeof (struct internal_syment); |
57402f1e | 815 | flaginfo.internal_syms = (struct internal_syment *) bfd_malloc (amt); |
dc810e39 | 816 | amt = max_sym_count * sizeof (asection *); |
57402f1e | 817 | flaginfo.sec_ptrs = (asection **) bfd_malloc (amt); |
dc810e39 | 818 | amt = max_sym_count * sizeof (long); |
57402f1e NC |
819 | flaginfo.sym_indices = (long int *) bfd_malloc (amt); |
820 | flaginfo.outsyms = (bfd_byte *) bfd_malloc ((max_sym_count + 1) * symesz); | |
dc810e39 | 821 | amt = max_lineno_count * bfd_coff_linesz (abfd); |
57402f1e NC |
822 | flaginfo.linenos = (bfd_byte *) bfd_malloc (amt); |
823 | flaginfo.contents = (bfd_byte *) bfd_malloc (max_contents_size); | |
dc810e39 | 824 | amt = max_reloc_count * relsz; |
57402f1e | 825 | flaginfo.external_relocs = (bfd_byte *) bfd_malloc (amt); |
0e1862bb | 826 | if (! bfd_link_relocatable (info)) |
dc810e39 AM |
827 | { |
828 | amt = max_reloc_count * sizeof (struct internal_reloc); | |
57402f1e | 829 | flaginfo.internal_relocs = (struct internal_reloc *) bfd_malloc (amt); |
dc810e39 | 830 | } |
57402f1e NC |
831 | if ((flaginfo.internal_syms == NULL && max_sym_count > 0) |
832 | || (flaginfo.sec_ptrs == NULL && max_sym_count > 0) | |
833 | || (flaginfo.sym_indices == NULL && max_sym_count > 0) | |
834 | || flaginfo.outsyms == NULL | |
835 | || (flaginfo.linenos == NULL && max_lineno_count > 0) | |
836 | || (flaginfo.contents == NULL && max_contents_size > 0) | |
837 | || (flaginfo.external_relocs == NULL && max_reloc_count > 0) | |
0e1862bb | 838 | || (! bfd_link_relocatable (info) |
57402f1e | 839 | && flaginfo.internal_relocs == NULL |
252b5132 RH |
840 | && max_reloc_count > 0)) |
841 | goto error_return; | |
842 | ||
843 | /* We now know the position of everything in the file, except that | |
844 | we don't know the size of the symbol table and therefore we don't | |
845 | know where the string table starts. We just build the string | |
846 | table in memory as we go along. We process all the relocations | |
847 | for a single input file at once. */ | |
848 | obj_raw_syment_count (abfd) = 0; | |
849 | ||
850 | if (coff_backend_info (abfd)->_bfd_coff_start_final_link) | |
851 | { | |
852 | if (! bfd_coff_start_final_link (abfd, info)) | |
853 | goto error_return; | |
854 | } | |
855 | ||
856 | for (o = abfd->sections; o != NULL; o = o->next) | |
857 | { | |
8423293d | 858 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
252b5132 RH |
859 | { |
860 | if (p->type == bfd_indirect_link_order | |
9bd09e22 | 861 | && bfd_family_coff (p->u.indirect.section->owner)) |
252b5132 RH |
862 | { |
863 | sub = p->u.indirect.section->owner; | |
57402f1e | 864 | if (! bfd_coff_link_output_has_begun (sub, & flaginfo)) |
252b5132 | 865 | { |
57402f1e | 866 | if (! _bfd_coff_link_input_bfd (&flaginfo, sub)) |
252b5132 | 867 | goto error_return; |
0a1b45a2 | 868 | sub->output_has_begun = true; |
252b5132 RH |
869 | } |
870 | } | |
871 | else if (p->type == bfd_section_reloc_link_order | |
872 | || p->type == bfd_symbol_reloc_link_order) | |
873 | { | |
57402f1e | 874 | if (! _bfd_coff_reloc_link_order (abfd, &flaginfo, o, p)) |
252b5132 RH |
875 | goto error_return; |
876 | } | |
877 | else | |
878 | { | |
879 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
880 | goto error_return; | |
881 | } | |
882 | } | |
883 | } | |
884 | ||
57402f1e | 885 | if (flaginfo.info->strip != strip_all && flaginfo.info->discard != discard_all) |
e7ebb214 JB |
886 | { |
887 | /* Add local symbols from foreign inputs. */ | |
c72f2fb2 | 888 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
e7ebb214 JB |
889 | { |
890 | unsigned int i; | |
891 | ||
892 | if (bfd_family_coff (sub) || ! bfd_get_outsymbols (sub)) | |
893 | continue; | |
894 | for (i = 0; i < bfd_get_symcount (sub); ++i) | |
895 | { | |
896 | asymbol *sym = bfd_get_outsymbols (sub) [i]; | |
897 | file_ptr pos; | |
898 | struct internal_syment isym; | |
270f8245 JB |
899 | union internal_auxent iaux; |
900 | bfd_size_type string_size = 0, indx; | |
e7ebb214 | 901 | bfd_vma written = 0; |
0a1b45a2 | 902 | bool rewrite = false, hash; |
e7ebb214 JB |
903 | |
904 | if (! (sym->flags & BSF_LOCAL) | |
905 | || (sym->flags & (BSF_SECTION_SYM | BSF_DEBUGGING_RELOC | |
906 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC | |
907 | | BSF_SYNTHETIC)) | |
908 | || ((sym->flags & BSF_DEBUGGING) | |
909 | && ! (sym->flags & BSF_FILE))) | |
910 | continue; | |
911 | ||
912 | /* See if we are discarding symbols with this name. */ | |
57402f1e NC |
913 | if ((flaginfo.info->strip == strip_some |
914 | && (bfd_hash_lookup (flaginfo.info->keep_hash, | |
0a1b45a2 | 915 | bfd_asymbol_name(sym), false, false) |
e7ebb214 | 916 | == NULL)) |
57402f1e | 917 | || (((flaginfo.info->discard == discard_sec_merge |
e6f7f6d1 | 918 | && (bfd_asymbol_section (sym)->flags & SEC_MERGE) |
0e1862bb | 919 | && ! bfd_link_relocatable (flaginfo.info)) |
57402f1e | 920 | || flaginfo.info->discard == discard_l) |
e7ebb214 JB |
921 | && bfd_is_local_label_name (sub, bfd_asymbol_name(sym)))) |
922 | continue; | |
923 | ||
924 | pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) | |
925 | * symesz; | |
926 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
927 | goto error_return; | |
270f8245 | 928 | if (! coff_write_alien_symbol(abfd, sym, &isym, &iaux, &written, |
e7ebb214 JB |
929 | &string_size, NULL, NULL)) |
930 | goto error_return; | |
931 | ||
270f8245 JB |
932 | hash = !flaginfo.info->traditional_format; |
933 | ||
934 | if (string_size >= 6 && isym.n_sclass == C_FILE | |
935 | && ! isym._n._n_n._n_zeroes && isym.n_numaux) | |
e7ebb214 | 936 | { |
270f8245 | 937 | indx = _bfd_stringtab_add (flaginfo.strtab, ".file", hash, |
0a1b45a2 | 938 | false); |
270f8245 JB |
939 | if (indx == (bfd_size_type) -1) |
940 | goto error_return; | |
941 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
942 | bfd_coff_swap_sym_out (abfd, &isym, flaginfo.outsyms); | |
943 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
944 | || bfd_bwrite (flaginfo.outsyms, symesz, | |
945 | abfd) != symesz) | |
946 | goto error_return; | |
947 | string_size -= 6; | |
948 | } | |
e7ebb214 | 949 | |
270f8245 JB |
950 | if (string_size) |
951 | { | |
57402f1e | 952 | indx = _bfd_stringtab_add (flaginfo.strtab, |
e7ebb214 | 953 | bfd_asymbol_name (sym), hash, |
0a1b45a2 | 954 | false); |
e7ebb214 JB |
955 | if (indx == (bfd_size_type) -1) |
956 | goto error_return; | |
270f8245 JB |
957 | if (isym.n_sclass != C_FILE) |
958 | { | |
959 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
960 | bfd_coff_swap_sym_out (abfd, &isym, flaginfo.outsyms); | |
0a1b45a2 | 961 | rewrite = true; |
270f8245 JB |
962 | } |
963 | else | |
964 | { | |
965 | BFD_ASSERT (isym.n_numaux == 1); | |
966 | iaux.x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; | |
967 | bfd_coff_swap_aux_out (abfd, &iaux, isym.n_type, C_FILE, | |
968 | 0, 1, flaginfo.outsyms + symesz); | |
969 | if (bfd_seek (abfd, pos + symesz, SEEK_SET) != 0 | |
970 | || bfd_bwrite (flaginfo.outsyms + symesz, symesz, | |
971 | abfd) != symesz) | |
972 | goto error_return; | |
973 | } | |
e7ebb214 JB |
974 | } |
975 | ||
976 | if (isym.n_sclass == C_FILE) | |
977 | { | |
57402f1e | 978 | if (flaginfo.last_file_index != -1) |
e7ebb214 | 979 | { |
57402f1e NC |
980 | flaginfo.last_file.n_value = obj_raw_syment_count (abfd); |
981 | bfd_coff_swap_sym_out (abfd, &flaginfo.last_file, | |
982 | flaginfo.outsyms); | |
983 | pos = obj_sym_filepos (abfd) + flaginfo.last_file_index | |
e7ebb214 | 984 | * symesz; |
0a1b45a2 | 985 | rewrite = true; |
e7ebb214 | 986 | } |
57402f1e NC |
987 | flaginfo.last_file_index = obj_raw_syment_count (abfd); |
988 | flaginfo.last_file = isym; | |
e7ebb214 JB |
989 | } |
990 | ||
991 | if (rewrite | |
992 | && (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
57402f1e | 993 | || bfd_bwrite (flaginfo.outsyms, symesz, abfd) != symesz)) |
e7ebb214 JB |
994 | goto error_return; |
995 | ||
996 | obj_raw_syment_count (abfd) += written; | |
997 | } | |
998 | } | |
999 | } | |
1000 | ||
57402f1e | 1001 | if (! bfd_coff_final_link_postscript (abfd, & flaginfo)) |
252b5132 | 1002 | goto error_return; |
244148ad | 1003 | |
252b5132 RH |
1004 | /* Free up the buffers used by _bfd_coff_link_input_bfd. */ |
1005 | ||
57402f1e | 1006 | coff_debug_merge_hash_table_free (&flaginfo.debug_merge); |
0a1b45a2 | 1007 | debug_merge_allocated = false; |
252b5132 | 1008 | |
c9594989 AM |
1009 | free (flaginfo.internal_syms); |
1010 | flaginfo.internal_syms = NULL; | |
1011 | free (flaginfo.sec_ptrs); | |
1012 | flaginfo.sec_ptrs = NULL; | |
1013 | free (flaginfo.sym_indices); | |
1014 | flaginfo.sym_indices = NULL; | |
1015 | free (flaginfo.linenos); | |
1016 | flaginfo.linenos = NULL; | |
1017 | free (flaginfo.contents); | |
1018 | flaginfo.contents = NULL; | |
1019 | free (flaginfo.external_relocs); | |
1020 | flaginfo.external_relocs = NULL; | |
1021 | free (flaginfo.internal_relocs); | |
1022 | flaginfo.internal_relocs = NULL; | |
252b5132 RH |
1023 | |
1024 | /* The value of the last C_FILE symbol is supposed to be the symbol | |
1025 | index of the first external symbol. Write it out again if | |
1026 | necessary. */ | |
57402f1e NC |
1027 | if (flaginfo.last_file_index != -1 |
1028 | && (unsigned int) flaginfo.last_file.n_value != obj_raw_syment_count (abfd)) | |
252b5132 | 1029 | { |
dc810e39 AM |
1030 | file_ptr pos; |
1031 | ||
57402f1e NC |
1032 | flaginfo.last_file.n_value = obj_raw_syment_count (abfd); |
1033 | bfd_coff_swap_sym_out (abfd, &flaginfo.last_file, | |
1034 | flaginfo.outsyms); | |
dc810e39 | 1035 | |
57402f1e | 1036 | pos = obj_sym_filepos (abfd) + flaginfo.last_file_index * symesz; |
dc810e39 | 1037 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 |
57402f1e | 1038 | || bfd_bwrite (flaginfo.outsyms, symesz, abfd) != symesz) |
0a1b45a2 | 1039 | return false; |
252b5132 RH |
1040 | } |
1041 | ||
1042 | /* If doing task linking (ld --task-link) then make a pass through the | |
1043 | global symbols, writing out any that are defined, and making them | |
244148ad | 1044 | static. */ |
252b5132 RH |
1045 | if (info->task_link) |
1046 | { | |
0a1b45a2 | 1047 | flaginfo.failed = false; |
e92d460e | 1048 | coff_link_hash_traverse (coff_hash_table (info), |
57402f1e NC |
1049 | _bfd_coff_write_task_globals, &flaginfo); |
1050 | if (flaginfo.failed) | |
252b5132 RH |
1051 | goto error_return; |
1052 | } | |
1053 | ||
1054 | /* Write out the global symbols. */ | |
0a1b45a2 | 1055 | flaginfo.failed = false; |
57402f1e NC |
1056 | bfd_hash_traverse (&info->hash->table, _bfd_coff_write_global_sym, &flaginfo); |
1057 | if (flaginfo.failed) | |
252b5132 RH |
1058 | goto error_return; |
1059 | ||
1060 | /* The outsyms buffer is used by _bfd_coff_write_global_sym. */ | |
c9594989 AM |
1061 | free (flaginfo.outsyms); |
1062 | flaginfo.outsyms = NULL; | |
252b5132 | 1063 | |
0e1862bb | 1064 | if (bfd_link_relocatable (info) && max_output_reloc_count > 0) |
252b5132 RH |
1065 | { |
1066 | /* Now that we have written out all the global symbols, we know | |
1067 | the symbol indices to use for relocs against them, and we can | |
1068 | finally write out the relocs. */ | |
dc810e39 | 1069 | amt = max_output_reloc_count * relsz; |
a50b1753 | 1070 | external_relocs = (bfd_byte *) bfd_malloc (amt); |
252b5132 RH |
1071 | if (external_relocs == NULL) |
1072 | goto error_return; | |
1073 | ||
1074 | for (o = abfd->sections; o != NULL; o = o->next) | |
1075 | { | |
1076 | struct internal_reloc *irel; | |
1077 | struct internal_reloc *irelend; | |
1078 | struct coff_link_hash_entry **rel_hash; | |
1079 | bfd_byte *erel; | |
1080 | ||
1081 | if (o->reloc_count == 0) | |
1082 | continue; | |
1083 | ||
57402f1e | 1084 | irel = flaginfo.section_info[o->target_index].relocs; |
252b5132 | 1085 | irelend = irel + o->reloc_count; |
57402f1e | 1086 | rel_hash = flaginfo.section_info[o->target_index].rel_hashes; |
252b5132 RH |
1087 | erel = external_relocs; |
1088 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) | |
1089 | { | |
1090 | if (*rel_hash != NULL) | |
1091 | { | |
1092 | BFD_ASSERT ((*rel_hash)->indx >= 0); | |
1093 | irel->r_symndx = (*rel_hash)->indx; | |
1094 | } | |
8b956130 | 1095 | bfd_coff_swap_reloc_out (abfd, irel, erel); |
252b5132 RH |
1096 | } |
1097 | ||
cd339148 NS |
1098 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0) |
1099 | goto error_return; | |
f717994f | 1100 | if ((obj_pe (abfd) || obj_go32 (abfd)) && o->reloc_count >= 0xffff) |
cd339148 NS |
1101 | { |
1102 | /* In PE COFF, write the count of relocs as the first | |
1103 | reloc. The header overflow bit will be set | |
1104 | elsewhere. */ | |
1105 | struct internal_reloc incount; | |
1106 | bfd_byte *excount = (bfd_byte *)bfd_malloc (relsz); | |
68ffbac6 | 1107 | |
cd339148 NS |
1108 | memset (&incount, 0, sizeof (incount)); |
1109 | incount.r_vaddr = o->reloc_count + 1; | |
2c3fc389 | 1110 | bfd_coff_swap_reloc_out (abfd, &incount, excount); |
cd339148 NS |
1111 | if (bfd_bwrite (excount, relsz, abfd) != relsz) |
1112 | /* We'll leak, but it's an error anyway. */ | |
1113 | goto error_return; | |
1114 | free (excount); | |
1115 | } | |
1116 | if (bfd_bwrite (external_relocs, | |
1117 | (bfd_size_type) relsz * o->reloc_count, abfd) | |
1118 | != (bfd_size_type) relsz * o->reloc_count) | |
252b5132 RH |
1119 | goto error_return; |
1120 | } | |
1121 | ||
1122 | free (external_relocs); | |
1123 | external_relocs = NULL; | |
1124 | } | |
1125 | ||
1126 | /* Free up the section information. */ | |
57402f1e | 1127 | if (flaginfo.section_info != NULL) |
252b5132 RH |
1128 | { |
1129 | unsigned int i; | |
1130 | ||
1131 | for (i = 0; i < abfd->section_count; i++) | |
1132 | { | |
c9594989 AM |
1133 | free (flaginfo.section_info[i].relocs); |
1134 | free (flaginfo.section_info[i].rel_hashes); | |
252b5132 | 1135 | } |
57402f1e NC |
1136 | free (flaginfo.section_info); |
1137 | flaginfo.section_info = NULL; | |
252b5132 RH |
1138 | } |
1139 | ||
1140 | /* If we have optimized stabs strings, output them. */ | |
3722b82f | 1141 | if (coff_hash_table (info)->stab_info.stabstr != NULL) |
252b5132 RH |
1142 | { |
1143 | if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info)) | |
0a1b45a2 | 1144 | return false; |
252b5132 RH |
1145 | } |
1146 | ||
1147 | /* Write out the string table. */ | |
1148 | if (obj_raw_syment_count (abfd) != 0 || long_section_names) | |
1149 | { | |
dc810e39 AM |
1150 | file_ptr pos; |
1151 | ||
1152 | pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz; | |
1153 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
0a1b45a2 | 1154 | return false; |
252b5132 RH |
1155 | |
1156 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1157 | H_PUT_32 (abfd, |
57402f1e | 1158 | _bfd_stringtab_size (flaginfo.strtab) + STRING_SIZE_SIZE, |
dc810e39 | 1159 | strbuf); |
252b5132 | 1160 | #else |
dc810e39 | 1161 | #error Change H_PUT_32 above |
252b5132 RH |
1162 | #endif |
1163 | ||
dc810e39 AM |
1164 | if (bfd_bwrite (strbuf, (bfd_size_type) STRING_SIZE_SIZE, abfd) |
1165 | != STRING_SIZE_SIZE) | |
0a1b45a2 | 1166 | return false; |
252b5132 | 1167 | |
57402f1e | 1168 | if (! _bfd_stringtab_emit (abfd, flaginfo.strtab)) |
0a1b45a2 | 1169 | return false; |
d71f672e | 1170 | |
0a1b45a2 | 1171 | obj_coff_strings_written (abfd) = true; |
252b5132 RH |
1172 | } |
1173 | ||
57402f1e | 1174 | _bfd_stringtab_free (flaginfo.strtab); |
252b5132 | 1175 | |
ed48ec2e | 1176 | /* Setting symcount to 0 will cause write_object_contents to |
252b5132 | 1177 | not try to write out the symbols. */ |
ed48ec2e | 1178 | abfd->symcount = 0; |
252b5132 | 1179 | |
0a1b45a2 | 1180 | return true; |
252b5132 RH |
1181 | |
1182 | error_return: | |
1183 | if (debug_merge_allocated) | |
57402f1e NC |
1184 | coff_debug_merge_hash_table_free (&flaginfo.debug_merge); |
1185 | if (flaginfo.strtab != NULL) | |
1186 | _bfd_stringtab_free (flaginfo.strtab); | |
1187 | if (flaginfo.section_info != NULL) | |
252b5132 RH |
1188 | { |
1189 | unsigned int i; | |
1190 | ||
1191 | for (i = 0; i < abfd->section_count; i++) | |
1192 | { | |
c9594989 AM |
1193 | free (flaginfo.section_info[i].relocs); |
1194 | free (flaginfo.section_info[i].rel_hashes); | |
252b5132 | 1195 | } |
57402f1e | 1196 | free (flaginfo.section_info); |
252b5132 | 1197 | } |
c9594989 AM |
1198 | free (flaginfo.internal_syms); |
1199 | free (flaginfo.sec_ptrs); | |
1200 | free (flaginfo.sym_indices); | |
1201 | free (flaginfo.outsyms); | |
1202 | free (flaginfo.linenos); | |
1203 | free (flaginfo.contents); | |
1204 | free (flaginfo.external_relocs); | |
1205 | free (flaginfo.internal_relocs); | |
1206 | free (external_relocs); | |
0a1b45a2 | 1207 | return false; |
252b5132 RH |
1208 | } |
1209 | ||
8b956130 | 1210 | /* Parse out a -heap <reserved>,<commit> line. */ |
252b5132 RH |
1211 | |
1212 | static char * | |
8b956130 | 1213 | dores_com (char *ptr, bfd *output_bfd, int heap) |
252b5132 | 1214 | { |
244148ad | 1215 | if (coff_data(output_bfd)->pe) |
252b5132 RH |
1216 | { |
1217 | int val = strtoul (ptr, &ptr, 0); | |
8b956130 | 1218 | |
252b5132 | 1219 | if (heap) |
dc810e39 | 1220 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve = val; |
252b5132 | 1221 | else |
dc810e39 | 1222 | pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve = val; |
252b5132 | 1223 | |
244148ad | 1224 | if (ptr[0] == ',') |
252b5132 | 1225 | { |
dc810e39 | 1226 | val = strtoul (ptr+1, &ptr, 0); |
252b5132 | 1227 | if (heap) |
dc810e39 | 1228 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit = val; |
252b5132 | 1229 | else |
dc810e39 | 1230 | pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit = val; |
252b5132 RH |
1231 | } |
1232 | } | |
1233 | return ptr; | |
1234 | } | |
1235 | ||
8b956130 NC |
1236 | static char * |
1237 | get_name (char *ptr, char **dst) | |
252b5132 RH |
1238 | { |
1239 | while (*ptr == ' ') | |
1240 | ptr++; | |
1241 | *dst = ptr; | |
1242 | while (*ptr && *ptr != ' ') | |
1243 | ptr++; | |
1244 | *ptr = 0; | |
1245 | return ptr+1; | |
1246 | } | |
1247 | ||
8b956130 | 1248 | /* Process any magic embedded commands in a section called .drectve. */ |
244148ad | 1249 | |
252b5132 | 1250 | static int |
8b956130 NC |
1251 | process_embedded_commands (bfd *output_bfd, |
1252 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1253 | bfd *abfd) | |
252b5132 RH |
1254 | { |
1255 | asection *sec = bfd_get_section_by_name (abfd, ".drectve"); | |
1256 | char *s; | |
1257 | char *e; | |
eea6121a | 1258 | bfd_byte *copy; |
8b956130 | 1259 | |
244148ad | 1260 | if (!sec) |
252b5132 | 1261 | return 1; |
244148ad | 1262 | |
eea6121a | 1263 | if (!bfd_malloc_and_get_section (abfd, sec, ©)) |
252b5132 | 1264 | { |
c9594989 | 1265 | free (copy); |
252b5132 RH |
1266 | return 0; |
1267 | } | |
f075ee0c | 1268 | e = (char *) copy + sec->size; |
8b956130 | 1269 | |
f075ee0c | 1270 | for (s = (char *) copy; s < e ; ) |
252b5132 | 1271 | { |
f075ee0c | 1272 | if (s[0] != '-') |
8b956130 NC |
1273 | { |
1274 | s++; | |
1275 | continue; | |
1276 | } | |
08dedd66 | 1277 | if (startswith (s, "-attr")) |
252b5132 RH |
1278 | { |
1279 | char *name; | |
1280 | char *attribs; | |
1281 | asection *asec; | |
252b5132 RH |
1282 | int loop = 1; |
1283 | int had_write = 0; | |
252b5132 | 1284 | int had_exec= 0; |
8b956130 | 1285 | |
252b5132 | 1286 | s += 5; |
8b956130 NC |
1287 | s = get_name (s, &name); |
1288 | s = get_name (s, &attribs); | |
1289 | ||
1290 | while (loop) | |
1291 | { | |
1292 | switch (*attribs++) | |
1293 | { | |
1294 | case 'W': | |
1295 | had_write = 1; | |
1296 | break; | |
1297 | case 'R': | |
8b956130 NC |
1298 | break; |
1299 | case 'S': | |
8b956130 NC |
1300 | break; |
1301 | case 'X': | |
1302 | had_exec = 1; | |
1303 | break; | |
1304 | default: | |
1305 | loop = 0; | |
1306 | } | |
1307 | } | |
252b5132 | 1308 | asec = bfd_get_section_by_name (abfd, name); |
8b956130 NC |
1309 | if (asec) |
1310 | { | |
1311 | if (had_exec) | |
1312 | asec->flags |= SEC_CODE; | |
1313 | if (!had_write) | |
1314 | asec->flags |= SEC_READONLY; | |
1315 | } | |
252b5132 | 1316 | } |
08dedd66 | 1317 | else if (startswith (s, "-heap")) |
0112cd26 | 1318 | s = dores_com (s + 5, output_bfd, 1); |
8b956130 | 1319 | |
08dedd66 | 1320 | else if (startswith (s, "-stack")) |
0112cd26 | 1321 | s = dores_com (s + 6, output_bfd, 0); |
8b956130 | 1322 | |
c1711530 | 1323 | /* GNU extension for aligned commons. */ |
08dedd66 | 1324 | else if (startswith (s, "-aligncomm:")) |
c1711530 DK |
1325 | { |
1326 | /* Common symbols must be aligned on reading, as it | |
1327 | is too late to do anything here, after they have | |
1328 | already been allocated, so just skip the directive. */ | |
1329 | s += 11; | |
1330 | } | |
1331 | ||
244148ad | 1332 | else |
252b5132 RH |
1333 | s++; |
1334 | } | |
1335 | free (copy); | |
1336 | return 1; | |
1337 | } | |
1338 | ||
1339 | /* Place a marker against all symbols which are used by relocations. | |
1340 | This marker can be picked up by the 'do we skip this symbol ?' | |
1341 | loop in _bfd_coff_link_input_bfd() and used to prevent skipping | |
8b956130 | 1342 | that symbol. */ |
252b5132 RH |
1343 | |
1344 | static void | |
57402f1e | 1345 | mark_relocs (struct coff_final_link_info *flaginfo, bfd *input_bfd) |
252b5132 RH |
1346 | { |
1347 | asection * a; | |
1348 | ||
1349 | if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0) | |
1350 | return; | |
244148ad | 1351 | |
252b5132 RH |
1352 | for (a = input_bfd->sections; a != (asection *) NULL; a = a->next) |
1353 | { | |
1354 | struct internal_reloc * internal_relocs; | |
1355 | struct internal_reloc * irel; | |
1356 | struct internal_reloc * irelend; | |
1357 | ||
a29a8af8 KT |
1358 | if ((a->flags & SEC_RELOC) == 0 || a->reloc_count < 1 |
1359 | || a->linker_mark == 0) | |
252b5132 | 1360 | continue; |
a8fcf378 NC |
1361 | /* Don't mark relocs in excluded sections. */ |
1362 | if (a->output_section == bfd_abs_section_ptr) | |
1363 | continue; | |
252b5132 RH |
1364 | |
1365 | /* Read in the relocs. */ | |
1366 | internal_relocs = _bfd_coff_read_internal_relocs | |
0a1b45a2 | 1367 | (input_bfd, a, false, |
57402f1e | 1368 | flaginfo->external_relocs, |
0e1862bb L |
1369 | bfd_link_relocatable (flaginfo->info), |
1370 | (bfd_link_relocatable (flaginfo->info) | |
57402f1e NC |
1371 | ? (flaginfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count) |
1372 | : flaginfo->internal_relocs) | |
252b5132 | 1373 | ); |
244148ad | 1374 | |
252b5132 RH |
1375 | if (internal_relocs == NULL) |
1376 | continue; | |
1377 | ||
1378 | irel = internal_relocs; | |
1379 | irelend = irel + a->reloc_count; | |
1380 | ||
1381 | /* Place a mark in the sym_indices array (whose entries have | |
1382 | been initialised to 0) for all of the symbols that are used | |
1383 | in the relocation table. This will then be picked up in the | |
8b956130 | 1384 | skip/don't-skip pass. */ |
252b5132 | 1385 | for (; irel < irelend; irel++) |
06ab6faf AM |
1386 | if ((unsigned long) irel->r_symndx < obj_raw_syment_count (input_bfd)) |
1387 | flaginfo->sym_indices[irel->r_symndx] = -1; | |
252b5132 RH |
1388 | } |
1389 | } | |
1390 | ||
1391 | /* Link an input file into the linker output file. This function | |
1392 | handles all the sections and relocations of the input file at once. */ | |
1393 | ||
0a1b45a2 | 1394 | bool |
57402f1e | 1395 | _bfd_coff_link_input_bfd (struct coff_final_link_info *flaginfo, bfd *input_bfd) |
252b5132 | 1396 | { |
b2d638c7 ILT |
1397 | unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask; |
1398 | unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft; | |
0a1b45a2 | 1399 | bool (*adjust_symndx) |
8b956130 | 1400 | (bfd *, struct bfd_link_info *, bfd *, asection *, |
0a1b45a2 | 1401 | struct internal_reloc *, bool *); |
252b5132 RH |
1402 | bfd *output_bfd; |
1403 | const char *strings; | |
1404 | bfd_size_type syment_base; | |
0a1b45a2 | 1405 | bool copy, hash; |
252b5132 RH |
1406 | bfd_size_type isymesz; |
1407 | bfd_size_type osymesz; | |
1408 | bfd_size_type linesz; | |
1409 | bfd_byte *esym; | |
1410 | bfd_byte *esym_end; | |
1411 | struct internal_syment *isymp; | |
1412 | asection **secpp; | |
1413 | long *indexp; | |
1414 | unsigned long output_index; | |
1415 | bfd_byte *outsym; | |
1416 | struct coff_link_hash_entry **sym_hash; | |
1417 | asection *o; | |
1418 | ||
1419 | /* Move all the symbols to the output file. */ | |
1420 | ||
57402f1e | 1421 | output_bfd = flaginfo->output_bfd; |
252b5132 RH |
1422 | strings = NULL; |
1423 | syment_base = obj_raw_syment_count (output_bfd); | |
1424 | isymesz = bfd_coff_symesz (input_bfd); | |
1425 | osymesz = bfd_coff_symesz (output_bfd); | |
1426 | linesz = bfd_coff_linesz (input_bfd); | |
1427 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
1428 | ||
0a1b45a2 | 1429 | copy = false; |
57402f1e | 1430 | if (! flaginfo->info->keep_memory) |
0a1b45a2 AM |
1431 | copy = true; |
1432 | hash = true; | |
b560e2ac | 1433 | if (flaginfo->info->traditional_format) |
0a1b45a2 | 1434 | hash = false; |
252b5132 RH |
1435 | |
1436 | if (! _bfd_coff_get_external_symbols (input_bfd)) | |
0a1b45a2 | 1437 | return false; |
252b5132 RH |
1438 | |
1439 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1440 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
57402f1e NC |
1441 | isymp = flaginfo->internal_syms; |
1442 | secpp = flaginfo->sec_ptrs; | |
1443 | indexp = flaginfo->sym_indices; | |
252b5132 | 1444 | output_index = syment_base; |
57402f1e | 1445 | outsym = flaginfo->outsyms; |
252b5132 | 1446 | |
8b956130 | 1447 | if (coff_data (output_bfd)->pe |
57402f1e | 1448 | && ! process_embedded_commands (output_bfd, flaginfo->info, input_bfd)) |
0a1b45a2 | 1449 | return false; |
252b5132 | 1450 | |
8b956130 NC |
1451 | /* If we are going to perform relocations and also strip/discard some |
1452 | symbols then we must make sure that we do not strip/discard those | |
1453 | symbols that are going to be involved in the relocations. */ | |
57402f1e NC |
1454 | if (( flaginfo->info->strip != strip_none |
1455 | || flaginfo->info->discard != discard_none) | |
0e1862bb | 1456 | && bfd_link_relocatable (flaginfo->info)) |
252b5132 | 1457 | { |
8b956130 | 1458 | /* Mark the symbol array as 'not-used'. */ |
244148ad KH |
1459 | memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp); |
1460 | ||
57402f1e | 1461 | mark_relocs (flaginfo, input_bfd); |
252b5132 RH |
1462 | } |
1463 | ||
1464 | while (esym < esym_end) | |
1465 | { | |
1466 | struct internal_syment isym; | |
5d54c628 | 1467 | enum coff_symbol_classification classification; |
0a1b45a2 AM |
1468 | bool skip; |
1469 | bool global; | |
1470 | bool dont_skip_symbol; | |
252b5132 RH |
1471 | int add; |
1472 | ||
8b956130 | 1473 | bfd_coff_swap_sym_in (input_bfd, esym, isymp); |
252b5132 RH |
1474 | |
1475 | /* Make a copy of *isymp so that the relocate_section function | |
1476 | always sees the original values. This is more reliable than | |
1477 | always recomputing the symbol value even if we are stripping | |
1478 | the symbol. */ | |
1479 | isym = *isymp; | |
1480 | ||
5d54c628 ILT |
1481 | classification = bfd_coff_classify_symbol (input_bfd, &isym); |
1482 | switch (classification) | |
252b5132 | 1483 | { |
5d54c628 ILT |
1484 | default: |
1485 | abort (); | |
1486 | case COFF_SYMBOL_GLOBAL: | |
1487 | case COFF_SYMBOL_PE_SECTION: | |
1488 | case COFF_SYMBOL_LOCAL: | |
1489 | *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum); | |
1490 | break; | |
1491 | case COFF_SYMBOL_COMMON: | |
1492 | *secpp = bfd_com_section_ptr; | |
1493 | break; | |
1494 | case COFF_SYMBOL_UNDEFINED: | |
1495 | *secpp = bfd_und_section_ptr; | |
1496 | break; | |
252b5132 RH |
1497 | } |
1498 | ||
1499 | /* Extract the flag indicating if this symbol is used by a | |
07d6d2b8 | 1500 | relocation. */ |
57402f1e NC |
1501 | if ((flaginfo->info->strip != strip_none |
1502 | || flaginfo->info->discard != discard_none) | |
0e1862bb | 1503 | && bfd_link_relocatable (flaginfo->info)) |
252b5132 RH |
1504 | dont_skip_symbol = *indexp; |
1505 | else | |
0a1b45a2 | 1506 | dont_skip_symbol = false; |
244148ad | 1507 | |
252b5132 RH |
1508 | *indexp = -1; |
1509 | ||
0a1b45a2 AM |
1510 | skip = false; |
1511 | global = false; | |
252b5132 RH |
1512 | add = 1 + isym.n_numaux; |
1513 | ||
1514 | /* If we are stripping all symbols, we want to skip this one. */ | |
57402f1e | 1515 | if (flaginfo->info->strip == strip_all && ! dont_skip_symbol) |
0a1b45a2 | 1516 | skip = true; |
252b5132 RH |
1517 | |
1518 | if (! skip) | |
1519 | { | |
5d54c628 | 1520 | switch (classification) |
252b5132 | 1521 | { |
5d54c628 ILT |
1522 | default: |
1523 | abort (); | |
1524 | case COFF_SYMBOL_GLOBAL: | |
1525 | case COFF_SYMBOL_COMMON: | |
1526 | case COFF_SYMBOL_PE_SECTION: | |
252b5132 RH |
1527 | /* This is a global symbol. Global symbols come at the |
1528 | end of the symbol table, so skip them for now. | |
1529 | Locally defined function symbols, however, are an | |
1530 | exception, and are not moved to the end. */ | |
0a1b45a2 | 1531 | global = true; |
5d54c628 | 1532 | if (! ISFCN (isym.n_type)) |
0a1b45a2 | 1533 | skip = true; |
5d54c628 ILT |
1534 | break; |
1535 | ||
1536 | case COFF_SYMBOL_UNDEFINED: | |
1537 | /* Undefined symbols are left for the end. */ | |
0a1b45a2 AM |
1538 | global = true; |
1539 | skip = true; | |
5d54c628 ILT |
1540 | break; |
1541 | ||
1542 | case COFF_SYMBOL_LOCAL: | |
252b5132 | 1543 | /* This is a local symbol. Skip it if we are discarding |
07d6d2b8 | 1544 | local symbols. */ |
57402f1e | 1545 | if (flaginfo->info->discard == discard_all && ! dont_skip_symbol) |
0a1b45a2 | 1546 | skip = true; |
5d54c628 | 1547 | break; |
252b5132 RH |
1548 | } |
1549 | } | |
1550 | ||
440c4607 NC |
1551 | #ifndef COFF_WITH_PE |
1552 | /* Skip section symbols for sections which are not going to be | |
862517b6 | 1553 | emitted. */ |
440c4607 | 1554 | if (!skip |
f0803690 | 1555 | && !dont_skip_symbol |
440c4607 NC |
1556 | && isym.n_sclass == C_STAT |
1557 | && isym.n_type == T_NULL | |
f0803690 AM |
1558 | && isym.n_numaux > 0 |
1559 | && ((*secpp)->output_section == bfd_abs_section_ptr | |
1560 | || bfd_section_removed_from_list (output_bfd, | |
1561 | (*secpp)->output_section))) | |
0a1b45a2 | 1562 | skip = true; |
440c4607 NC |
1563 | #endif |
1564 | ||
252b5132 | 1565 | /* If we stripping debugging symbols, and this is a debugging |
07d6d2b8 AM |
1566 | symbol, then skip it. FIXME: gas sets the section to N_ABS |
1567 | for some types of debugging symbols; I don't know if this is | |
1568 | a bug or not. In any case, we handle it here. */ | |
252b5132 | 1569 | if (! skip |
57402f1e | 1570 | && flaginfo->info->strip == strip_debugger |
252b5132 RH |
1571 | && ! dont_skip_symbol |
1572 | && (isym.n_scnum == N_DEBUG | |
1573 | || (isym.n_scnum == N_ABS | |
1574 | && (isym.n_sclass == C_AUTO | |
1575 | || isym.n_sclass == C_REG | |
1576 | || isym.n_sclass == C_MOS | |
1577 | || isym.n_sclass == C_MOE | |
1578 | || isym.n_sclass == C_MOU | |
1579 | || isym.n_sclass == C_ARG | |
1580 | || isym.n_sclass == C_REGPARM | |
1581 | || isym.n_sclass == C_FIELD | |
1582 | || isym.n_sclass == C_EOS)))) | |
0a1b45a2 | 1583 | skip = true; |
252b5132 RH |
1584 | |
1585 | /* If some symbols are stripped based on the name, work out the | |
1586 | name and decide whether to skip this symbol. */ | |
1587 | if (! skip | |
57402f1e NC |
1588 | && (flaginfo->info->strip == strip_some |
1589 | || flaginfo->info->discard == discard_l)) | |
252b5132 RH |
1590 | { |
1591 | const char *name; | |
1592 | char buf[SYMNMLEN + 1]; | |
1593 | ||
1594 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1595 | if (name == NULL) | |
0a1b45a2 | 1596 | return false; |
252b5132 RH |
1597 | |
1598 | if (! dont_skip_symbol | |
57402f1e | 1599 | && ((flaginfo->info->strip == strip_some |
0a1b45a2 AM |
1600 | && (bfd_hash_lookup (flaginfo->info->keep_hash, name, false, |
1601 | false) == NULL)) | |
252b5132 | 1602 | || (! global |
57402f1e | 1603 | && flaginfo->info->discard == discard_l |
252b5132 | 1604 | && bfd_is_local_label_name (input_bfd, name)))) |
0a1b45a2 | 1605 | skip = true; |
252b5132 RH |
1606 | } |
1607 | ||
1608 | /* If this is an enum, struct, or union tag, see if we have | |
07d6d2b8 | 1609 | already output an identical type. */ |
252b5132 | 1610 | if (! skip |
b560e2ac | 1611 | && !flaginfo->info->traditional_format |
252b5132 RH |
1612 | && (isym.n_sclass == C_ENTAG |
1613 | || isym.n_sclass == C_STRTAG | |
1614 | || isym.n_sclass == C_UNTAG) | |
1615 | && isym.n_numaux == 1) | |
1616 | { | |
1617 | const char *name; | |
1618 | char buf[SYMNMLEN + 1]; | |
1619 | struct coff_debug_merge_hash_entry *mh; | |
1620 | struct coff_debug_merge_type *mt; | |
1621 | union internal_auxent aux; | |
1622 | struct coff_debug_merge_element **epp; | |
1623 | bfd_byte *esl, *eslend; | |
1624 | struct internal_syment *islp; | |
986f0783 | 1625 | size_t amt; |
252b5132 RH |
1626 | |
1627 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1628 | if (name == NULL) | |
0a1b45a2 | 1629 | return false; |
252b5132 RH |
1630 | |
1631 | /* Ignore fake names invented by compiler; treat them all as | |
07d6d2b8 | 1632 | the same name. */ |
252b5132 RH |
1633 | if (*name == '~' || *name == '.' || *name == '$' |
1634 | || (*name == bfd_get_symbol_leading_char (input_bfd) | |
1635 | && (name[1] == '~' || name[1] == '.' || name[1] == '$'))) | |
1636 | name = ""; | |
1637 | ||
57402f1e | 1638 | mh = coff_debug_merge_hash_lookup (&flaginfo->debug_merge, name, |
0a1b45a2 | 1639 | true, true); |
252b5132 | 1640 | if (mh == NULL) |
0a1b45a2 | 1641 | return false; |
252b5132 RH |
1642 | |
1643 | /* Allocate memory to hold type information. If this turns | |
07d6d2b8 AM |
1644 | out to be a duplicate, we pass this address to |
1645 | bfd_release. */ | |
dc810e39 | 1646 | amt = sizeof (struct coff_debug_merge_type); |
a50b1753 | 1647 | mt = (struct coff_debug_merge_type *) bfd_alloc (input_bfd, amt); |
252b5132 | 1648 | if (mt == NULL) |
0a1b45a2 | 1649 | return false; |
96d56e9f | 1650 | mt->type_class = isym.n_sclass; |
252b5132 RH |
1651 | |
1652 | /* Pick up the aux entry, which points to the end of the tag | |
07d6d2b8 | 1653 | entries. */ |
8b956130 | 1654 | bfd_coff_swap_aux_in (input_bfd, (esym + isymesz), |
252b5132 | 1655 | isym.n_type, isym.n_sclass, 0, isym.n_numaux, |
8b956130 | 1656 | &aux); |
252b5132 RH |
1657 | |
1658 | /* Gather the elements. */ | |
1659 | epp = &mt->elements; | |
1660 | mt->elements = NULL; | |
1661 | islp = isymp + 2; | |
1662 | esl = esym + 2 * isymesz; | |
1663 | eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd) | |
1664 | + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz); | |
1665 | while (esl < eslend) | |
1666 | { | |
1667 | const char *elename; | |
1668 | char elebuf[SYMNMLEN + 1]; | |
00692651 | 1669 | char *name_copy; |
252b5132 | 1670 | |
8b956130 | 1671 | bfd_coff_swap_sym_in (input_bfd, esl, islp); |
252b5132 | 1672 | |
dc810e39 | 1673 | amt = sizeof (struct coff_debug_merge_element); |
a50b1753 | 1674 | *epp = (struct coff_debug_merge_element *) |
07d6d2b8 | 1675 | bfd_alloc (input_bfd, amt); |
252b5132 | 1676 | if (*epp == NULL) |
0a1b45a2 | 1677 | return false; |
252b5132 RH |
1678 | |
1679 | elename = _bfd_coff_internal_syment_name (input_bfd, islp, | |
1680 | elebuf); | |
1681 | if (elename == NULL) | |
0a1b45a2 | 1682 | return false; |
252b5132 | 1683 | |
dc810e39 | 1684 | amt = strlen (elename) + 1; |
a50b1753 | 1685 | name_copy = (char *) bfd_alloc (input_bfd, amt); |
00692651 | 1686 | if (name_copy == NULL) |
0a1b45a2 | 1687 | return false; |
00692651 | 1688 | strcpy (name_copy, elename); |
252b5132 | 1689 | |
00692651 | 1690 | (*epp)->name = name_copy; |
252b5132 RH |
1691 | (*epp)->type = islp->n_type; |
1692 | (*epp)->tagndx = 0; | |
1693 | if (islp->n_numaux >= 1 | |
1694 | && islp->n_type != T_NULL | |
1695 | && islp->n_sclass != C_EOS) | |
1696 | { | |
1697 | union internal_auxent eleaux; | |
1698 | long indx; | |
1699 | ||
8b956130 | 1700 | bfd_coff_swap_aux_in (input_bfd, (esl + isymesz), |
252b5132 | 1701 | islp->n_type, islp->n_sclass, 0, |
8b956130 | 1702 | islp->n_numaux, &eleaux); |
252b5132 RH |
1703 | indx = eleaux.x_sym.x_tagndx.l; |
1704 | ||
1705 | /* FIXME: If this tagndx entry refers to a symbol | |
1706 | defined later in this file, we just ignore it. | |
1707 | Handling this correctly would be tedious, and may | |
1708 | not be required. */ | |
252b5132 RH |
1709 | if (indx > 0 |
1710 | && (indx | |
1711 | < ((esym - | |
1712 | (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1713 | / (long) isymesz))) | |
1714 | { | |
57402f1e | 1715 | (*epp)->tagndx = flaginfo->sym_indices[indx]; |
252b5132 RH |
1716 | if ((*epp)->tagndx < 0) |
1717 | (*epp)->tagndx = 0; | |
1718 | } | |
1719 | } | |
1720 | epp = &(*epp)->next; | |
1721 | *epp = NULL; | |
1722 | ||
1723 | esl += (islp->n_numaux + 1) * isymesz; | |
1724 | islp += islp->n_numaux + 1; | |
1725 | } | |
1726 | ||
1727 | /* See if we already have a definition which matches this | |
07d6d2b8 AM |
1728 | type. We always output the type if it has no elements, |
1729 | for simplicity. */ | |
252b5132 | 1730 | if (mt->elements == NULL) |
8b956130 | 1731 | bfd_release (input_bfd, mt); |
252b5132 RH |
1732 | else |
1733 | { | |
1734 | struct coff_debug_merge_type *mtl; | |
1735 | ||
1736 | for (mtl = mh->types; mtl != NULL; mtl = mtl->next) | |
1737 | { | |
1738 | struct coff_debug_merge_element *me, *mel; | |
1739 | ||
96d56e9f | 1740 | if (mtl->type_class != mt->type_class) |
252b5132 RH |
1741 | continue; |
1742 | ||
1743 | for (me = mt->elements, mel = mtl->elements; | |
1744 | me != NULL && mel != NULL; | |
1745 | me = me->next, mel = mel->next) | |
1746 | { | |
1747 | if (strcmp (me->name, mel->name) != 0 | |
1748 | || me->type != mel->type | |
1749 | || me->tagndx != mel->tagndx) | |
1750 | break; | |
1751 | } | |
1752 | ||
1753 | if (me == NULL && mel == NULL) | |
1754 | break; | |
1755 | } | |
1756 | ||
1757 | if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base) | |
1758 | { | |
1759 | /* This is the first definition of this type. */ | |
1760 | mt->indx = output_index; | |
1761 | mt->next = mh->types; | |
1762 | mh->types = mt; | |
1763 | } | |
1764 | else | |
1765 | { | |
1766 | /* This is a redefinition which can be merged. */ | |
8b956130 | 1767 | bfd_release (input_bfd, mt); |
252b5132 RH |
1768 | *indexp = mtl->indx; |
1769 | add = (eslend - esym) / isymesz; | |
0a1b45a2 | 1770 | skip = true; |
252b5132 RH |
1771 | } |
1772 | } | |
1773 | } | |
1774 | ||
1775 | /* We now know whether we are to skip this symbol or not. */ | |
1776 | if (! skip) | |
1777 | { | |
1778 | /* Adjust the symbol in order to output it. */ | |
1779 | ||
1780 | if (isym._n._n_n._n_zeroes == 0 | |
1781 | && isym._n._n_n._n_offset != 0) | |
1782 | { | |
1783 | const char *name; | |
1784 | bfd_size_type indx; | |
1785 | ||
1786 | /* This symbol has a long name. Enter it in the string | |
1787 | table we are building. Note that we do not check | |
1788 | bfd_coff_symname_in_debug. That is only true for | |
1789 | XCOFF, and XCOFF requires different linking code | |
1790 | anyhow. */ | |
8b956130 | 1791 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, NULL); |
252b5132 | 1792 | if (name == NULL) |
0a1b45a2 | 1793 | return false; |
57402f1e | 1794 | indx = _bfd_stringtab_add (flaginfo->strtab, name, hash, copy); |
252b5132 | 1795 | if (indx == (bfd_size_type) -1) |
0a1b45a2 | 1796 | return false; |
252b5132 RH |
1797 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; |
1798 | } | |
1799 | ||
8add8e30 | 1800 | switch (isym.n_sclass) |
252b5132 | 1801 | { |
8add8e30 ILT |
1802 | case C_AUTO: |
1803 | case C_MOS: | |
1804 | case C_EOS: | |
1805 | case C_MOE: | |
1806 | case C_MOU: | |
1807 | case C_UNTAG: | |
1808 | case C_STRTAG: | |
1809 | case C_ENTAG: | |
1810 | case C_TPDEF: | |
1811 | case C_ARG: | |
1812 | case C_USTATIC: | |
1813 | case C_REG: | |
1814 | case C_REGPARM: | |
1815 | case C_FIELD: | |
1816 | /* The symbol value should not be modified. */ | |
1817 | break; | |
1818 | ||
1819 | case C_FCN: | |
1820 | if (obj_pe (input_bfd) | |
7bd8862c | 1821 | && memcmp (isym.n_name, ".bf", sizeof ".bf") != 0 |
8add8e30 ILT |
1822 | && isym.n_scnum > 0) |
1823 | { | |
1824 | /* For PE, .lf and .ef get their value left alone, | |
1825 | while .bf gets relocated. However, they all have | |
1826 | "real" section numbers, and need to be moved into | |
1827 | the new section. */ | |
1828 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1829 | break; | |
1830 | } | |
1831 | /* Fall through. */ | |
1832 | default: | |
1833 | case C_LABEL: /* Not completely sure about these 2 */ | |
1834 | case C_EXTDEF: | |
1835 | case C_BLOCK: | |
1836 | case C_EFCN: | |
1837 | case C_NULL: | |
1838 | case C_EXT: | |
1839 | case C_STAT: | |
1840 | case C_SECTION: | |
1841 | case C_NT_WEAK: | |
1842 | /* Compute new symbol location. */ | |
1843 | if (isym.n_scnum > 0) | |
1844 | { | |
1845 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1846 | isym.n_value += (*secpp)->output_offset; | |
1847 | if (! obj_pe (input_bfd)) | |
1848 | isym.n_value -= (*secpp)->vma; | |
57402f1e | 1849 | if (! obj_pe (flaginfo->output_bfd)) |
8add8e30 ILT |
1850 | isym.n_value += (*secpp)->output_section->vma; |
1851 | } | |
1852 | break; | |
1853 | ||
1854 | case C_FILE: | |
1855 | /* The value of a C_FILE symbol is the symbol index of | |
1856 | the next C_FILE symbol. The value of the last C_FILE | |
1857 | symbol is the symbol index to the first external | |
1858 | symbol (actually, coff_renumber_symbols does not get | |
1859 | this right--it just sets the value of the last C_FILE | |
1860 | symbol to zero--and nobody has ever complained about | |
1861 | it). We try to get this right, below, just before we | |
1862 | write the symbols out, but in the general case we may | |
1863 | have to write the symbol out twice. */ | |
57402f1e NC |
1864 | if (flaginfo->last_file_index != -1 |
1865 | && flaginfo->last_file.n_value != (bfd_vma) output_index) | |
252b5132 | 1866 | { |
8add8e30 | 1867 | /* We must correct the value of the last C_FILE |
07d6d2b8 | 1868 | entry. */ |
57402f1e NC |
1869 | flaginfo->last_file.n_value = output_index; |
1870 | if ((bfd_size_type) flaginfo->last_file_index >= syment_base) | |
252b5132 RH |
1871 | { |
1872 | /* The last C_FILE symbol is in this input file. */ | |
1873 | bfd_coff_swap_sym_out (output_bfd, | |
57402f1e NC |
1874 | &flaginfo->last_file, |
1875 | (flaginfo->outsyms | |
1876 | + ((flaginfo->last_file_index | |
8b956130 NC |
1877 | - syment_base) |
1878 | * osymesz))); | |
252b5132 RH |
1879 | } |
1880 | else | |
1881 | { | |
dc810e39 AM |
1882 | file_ptr pos; |
1883 | ||
252b5132 RH |
1884 | /* We have already written out the last C_FILE |
1885 | symbol. We need to write it out again. We | |
1886 | borrow *outsym temporarily. */ | |
1887 | bfd_coff_swap_sym_out (output_bfd, | |
57402f1e | 1888 | &flaginfo->last_file, outsym); |
dc810e39 | 1889 | pos = obj_sym_filepos (output_bfd); |
57402f1e | 1890 | pos += flaginfo->last_file_index * osymesz; |
dc810e39 AM |
1891 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
1892 | || bfd_bwrite (outsym, osymesz, output_bfd) != osymesz) | |
0a1b45a2 | 1893 | return false; |
252b5132 RH |
1894 | } |
1895 | } | |
1896 | ||
57402f1e NC |
1897 | flaginfo->last_file_index = output_index; |
1898 | flaginfo->last_file = isym; | |
8add8e30 | 1899 | break; |
252b5132 RH |
1900 | } |
1901 | ||
1902 | /* If doing task linking, convert normal global function symbols to | |
e4202681 | 1903 | static functions. */ |
57402f1e | 1904 | if (flaginfo->info->task_link && IS_EXTERNAL (input_bfd, isym)) |
252b5132 RH |
1905 | isym.n_sclass = C_STAT; |
1906 | ||
1907 | /* Output the symbol. */ | |
8b956130 | 1908 | bfd_coff_swap_sym_out (output_bfd, &isym, outsym); |
252b5132 RH |
1909 | |
1910 | *indexp = output_index; | |
1911 | ||
1912 | if (global) | |
1913 | { | |
1914 | long indx; | |
1915 | struct coff_link_hash_entry *h; | |
1916 | ||
1917 | indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1918 | / isymesz); | |
1919 | h = obj_coff_sym_hashes (input_bfd)[indx]; | |
1920 | if (h == NULL) | |
1921 | { | |
1922 | /* This can happen if there were errors earlier in | |
07d6d2b8 | 1923 | the link. */ |
252b5132 | 1924 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 1925 | return false; |
252b5132 RH |
1926 | } |
1927 | h->indx = output_index; | |
1928 | } | |
1929 | ||
1930 | output_index += add; | |
1931 | outsym += add * osymesz; | |
1932 | } | |
1933 | ||
1934 | esym += add * isymesz; | |
1935 | isymp += add; | |
1936 | ++secpp; | |
1937 | ++indexp; | |
1938 | for (--add; add > 0; --add) | |
1939 | { | |
1940 | *secpp++ = NULL; | |
1941 | *indexp++ = -1; | |
1942 | } | |
1943 | } | |
1944 | ||
1945 | /* Fix up the aux entries. This must be done in a separate pass, | |
1946 | because we don't know the correct symbol indices until we have | |
1947 | already decided which symbols we are going to keep. */ | |
252b5132 RH |
1948 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); |
1949 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
57402f1e NC |
1950 | isymp = flaginfo->internal_syms; |
1951 | indexp = flaginfo->sym_indices; | |
252b5132 | 1952 | sym_hash = obj_coff_sym_hashes (input_bfd); |
57402f1e | 1953 | outsym = flaginfo->outsyms; |
8b956130 | 1954 | |
252b5132 RH |
1955 | while (esym < esym_end) |
1956 | { | |
1957 | int add; | |
1958 | ||
1959 | add = 1 + isymp->n_numaux; | |
1960 | ||
1961 | if ((*indexp < 0 | |
1962 | || (bfd_size_type) *indexp < syment_base) | |
1963 | && (*sym_hash == NULL | |
1964 | || (*sym_hash)->auxbfd != input_bfd)) | |
1965 | esym += add * isymesz; | |
1966 | else | |
1967 | { | |
1968 | struct coff_link_hash_entry *h; | |
1969 | int i; | |
1970 | ||
1971 | h = NULL; | |
1972 | if (*indexp < 0) | |
1973 | { | |
1974 | h = *sym_hash; | |
1975 | ||
1976 | /* The m68k-motorola-sysv assembler will sometimes | |
07d6d2b8 AM |
1977 | generate two symbols with the same name, but only one |
1978 | will have aux entries. */ | |
252b5132 | 1979 | BFD_ASSERT (isymp->n_numaux == 0 |
cfc9dfb1 | 1980 | || h->numaux == 0 |
252b5132 RH |
1981 | || h->numaux == isymp->n_numaux); |
1982 | } | |
1983 | ||
1984 | esym += isymesz; | |
1985 | ||
1986 | if (h == NULL) | |
1987 | outsym += osymesz; | |
1988 | ||
1989 | /* Handle the aux entries. This handling is based on | |
1990 | coff_pointerize_aux. I don't know if it always correct. */ | |
1991 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) | |
1992 | { | |
1993 | union internal_auxent aux; | |
1994 | union internal_auxent *auxp; | |
1995 | ||
cfc9dfb1 | 1996 | if (h != NULL && h->aux != NULL && (h->numaux > i)) |
252b5132 RH |
1997 | auxp = h->aux + i; |
1998 | else | |
1999 | { | |
8b956130 NC |
2000 | bfd_coff_swap_aux_in (input_bfd, esym, isymp->n_type, |
2001 | isymp->n_sclass, i, isymp->n_numaux, &aux); | |
252b5132 RH |
2002 | auxp = &aux; |
2003 | } | |
2004 | ||
2005 | if (isymp->n_sclass == C_FILE) | |
2006 | { | |
2007 | /* If this is a long filename, we must put it in the | |
2008 | string table. */ | |
2009 | if (auxp->x_file.x_n.x_zeroes == 0 | |
2010 | && auxp->x_file.x_n.x_offset != 0) | |
2011 | { | |
2012 | const char *filename; | |
2013 | bfd_size_type indx; | |
2014 | ||
2015 | BFD_ASSERT (auxp->x_file.x_n.x_offset | |
2016 | >= STRING_SIZE_SIZE); | |
2017 | if (strings == NULL) | |
2018 | { | |
2019 | strings = _bfd_coff_read_string_table (input_bfd); | |
2020 | if (strings == NULL) | |
0a1b45a2 | 2021 | return false; |
252b5132 | 2022 | } |
5a3f568b NC |
2023 | if ((bfd_size_type) auxp->x_file.x_n.x_offset >= obj_coff_strings_len (input_bfd)) |
2024 | filename = _("<corrupt>"); | |
2025 | else | |
2026 | filename = strings + auxp->x_file.x_n.x_offset; | |
57402f1e | 2027 | indx = _bfd_stringtab_add (flaginfo->strtab, filename, |
252b5132 RH |
2028 | hash, copy); |
2029 | if (indx == (bfd_size_type) -1) | |
0a1b45a2 | 2030 | return false; |
252b5132 RH |
2031 | auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; |
2032 | } | |
2033 | } | |
0c429e07 NC |
2034 | else if ((isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) |
2035 | && isymp->n_sclass != C_NT_WEAK) | |
252b5132 RH |
2036 | { |
2037 | unsigned long indx; | |
2038 | ||
2039 | if (ISFCN (isymp->n_type) | |
2040 | || ISTAG (isymp->n_sclass) | |
2041 | || isymp->n_sclass == C_BLOCK | |
2042 | || isymp->n_sclass == C_FCN) | |
2043 | { | |
2044 | indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l; | |
2045 | if (indx > 0 | |
2046 | && indx < obj_raw_syment_count (input_bfd)) | |
2047 | { | |
2048 | /* We look forward through the symbol for | |
07d6d2b8 AM |
2049 | the index of the next symbol we are going |
2050 | to include. I don't know if this is | |
2051 | entirely right. */ | |
57402f1e NC |
2052 | while ((flaginfo->sym_indices[indx] < 0 |
2053 | || ((bfd_size_type) flaginfo->sym_indices[indx] | |
252b5132 RH |
2054 | < syment_base)) |
2055 | && indx < obj_raw_syment_count (input_bfd)) | |
2056 | ++indx; | |
2057 | if (indx >= obj_raw_syment_count (input_bfd)) | |
2058 | indx = output_index; | |
2059 | else | |
57402f1e | 2060 | indx = flaginfo->sym_indices[indx]; |
252b5132 RH |
2061 | auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx; |
2062 | } | |
2063 | } | |
2064 | ||
2065 | indx = auxp->x_sym.x_tagndx.l; | |
2066 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) | |
2067 | { | |
2068 | long symindx; | |
2069 | ||
57402f1e | 2070 | symindx = flaginfo->sym_indices[indx]; |
252b5132 RH |
2071 | if (symindx < 0) |
2072 | auxp->x_sym.x_tagndx.l = 0; | |
2073 | else | |
2074 | auxp->x_sym.x_tagndx.l = symindx; | |
2075 | } | |
2076 | ||
2077 | /* The .bf symbols are supposed to be linked through | |
2078 | the endndx field. We need to carry this list | |
2079 | across object files. */ | |
2080 | if (i == 0 | |
2081 | && h == NULL | |
2082 | && isymp->n_sclass == C_FCN | |
2083 | && (isymp->_n._n_n._n_zeroes != 0 | |
2084 | || isymp->_n._n_n._n_offset == 0) | |
2085 | && isymp->_n._n_name[0] == '.' | |
2086 | && isymp->_n._n_name[1] == 'b' | |
2087 | && isymp->_n._n_name[2] == 'f' | |
2088 | && isymp->_n._n_name[3] == '\0') | |
2089 | { | |
57402f1e | 2090 | if (flaginfo->last_bf_index != -1) |
252b5132 | 2091 | { |
57402f1e | 2092 | flaginfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l = |
252b5132 RH |
2093 | *indexp; |
2094 | ||
57402f1e | 2095 | if ((bfd_size_type) flaginfo->last_bf_index |
252b5132 RH |
2096 | >= syment_base) |
2097 | { | |
8b956130 | 2098 | void *auxout; |
252b5132 RH |
2099 | |
2100 | /* The last .bf symbol is in this input | |
2101 | file. This will only happen if the | |
2102 | assembler did not set up the .bf | |
2103 | endndx symbols correctly. */ | |
57402f1e NC |
2104 | auxout = (flaginfo->outsyms |
2105 | + ((flaginfo->last_bf_index | |
8b956130 NC |
2106 | - syment_base) |
2107 | * osymesz)); | |
2108 | ||
252b5132 | 2109 | bfd_coff_swap_aux_out (output_bfd, |
57402f1e | 2110 | &flaginfo->last_bf, |
252b5132 RH |
2111 | isymp->n_type, |
2112 | isymp->n_sclass, | |
2113 | 0, isymp->n_numaux, | |
2114 | auxout); | |
2115 | } | |
2116 | else | |
2117 | { | |
dc810e39 AM |
2118 | file_ptr pos; |
2119 | ||
252b5132 | 2120 | /* We have already written out the last |
07d6d2b8 AM |
2121 | .bf aux entry. We need to write it |
2122 | out again. We borrow *outsym | |
2123 | temporarily. FIXME: This case should | |
2124 | be made faster. */ | |
252b5132 | 2125 | bfd_coff_swap_aux_out (output_bfd, |
57402f1e | 2126 | &flaginfo->last_bf, |
252b5132 RH |
2127 | isymp->n_type, |
2128 | isymp->n_sclass, | |
2129 | 0, isymp->n_numaux, | |
8b956130 | 2130 | outsym); |
dc810e39 | 2131 | pos = obj_sym_filepos (output_bfd); |
57402f1e | 2132 | pos += flaginfo->last_bf_index * osymesz; |
dc810e39 AM |
2133 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
2134 | || (bfd_bwrite (outsym, osymesz, output_bfd) | |
2135 | != osymesz)) | |
0a1b45a2 | 2136 | return false; |
252b5132 RH |
2137 | } |
2138 | } | |
2139 | ||
2140 | if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0) | |
57402f1e | 2141 | flaginfo->last_bf_index = -1; |
252b5132 RH |
2142 | else |
2143 | { | |
2144 | /* The endndx field of this aux entry must | |
07d6d2b8 AM |
2145 | be updated with the symbol number of the |
2146 | next .bf symbol. */ | |
57402f1e NC |
2147 | flaginfo->last_bf = *auxp; |
2148 | flaginfo->last_bf_index = (((outsym - flaginfo->outsyms) | |
252b5132 RH |
2149 | / osymesz) |
2150 | + syment_base); | |
2151 | } | |
2152 | } | |
2153 | } | |
2154 | ||
2155 | if (h == NULL) | |
2156 | { | |
8b956130 | 2157 | bfd_coff_swap_aux_out (output_bfd, auxp, isymp->n_type, |
252b5132 | 2158 | isymp->n_sclass, i, isymp->n_numaux, |
8b956130 | 2159 | outsym); |
252b5132 RH |
2160 | outsym += osymesz; |
2161 | } | |
2162 | ||
2163 | esym += isymesz; | |
2164 | } | |
2165 | } | |
2166 | ||
2167 | indexp += add; | |
2168 | isymp += add; | |
2169 | sym_hash += add; | |
2170 | } | |
2171 | ||
2172 | /* Relocate the line numbers, unless we are stripping them. */ | |
57402f1e NC |
2173 | if (flaginfo->info->strip == strip_none |
2174 | || flaginfo->info->strip == strip_some) | |
252b5132 RH |
2175 | { |
2176 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2177 | { | |
2178 | bfd_vma offset; | |
2179 | bfd_byte *eline; | |
2180 | bfd_byte *elineend; | |
b545f675 | 2181 | bfd_byte *oeline; |
0a1b45a2 | 2182 | bool skipping; |
dc810e39 AM |
2183 | file_ptr pos; |
2184 | bfd_size_type amt; | |
252b5132 RH |
2185 | |
2186 | /* FIXME: If SEC_HAS_CONTENTS is not for the section, then | |
2187 | build_link_order in ldwrite.c will not have created a | |
2188 | link order, which means that we will not have seen this | |
2189 | input section in _bfd_coff_final_link, which means that | |
2190 | we will not have allocated space for the line numbers of | |
2191 | this section. I don't think line numbers can be | |
2192 | meaningful for a section which does not have | |
2193 | SEC_HAS_CONTENTS set, but, if they do, this must be | |
2194 | changed. */ | |
2195 | if (o->lineno_count == 0 | |
2196 | || (o->output_section->flags & SEC_HAS_CONTENTS) == 0) | |
2197 | continue; | |
2198 | ||
2199 | if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0 | |
57402f1e | 2200 | || bfd_bread (flaginfo->linenos, linesz * o->lineno_count, |
252b5132 | 2201 | input_bfd) != linesz * o->lineno_count) |
0a1b45a2 | 2202 | return false; |
252b5132 RH |
2203 | |
2204 | offset = o->output_section->vma + o->output_offset - o->vma; | |
57402f1e NC |
2205 | eline = flaginfo->linenos; |
2206 | oeline = flaginfo->linenos; | |
252b5132 | 2207 | elineend = eline + linesz * o->lineno_count; |
0a1b45a2 | 2208 | skipping = false; |
252b5132 RH |
2209 | for (; eline < elineend; eline += linesz) |
2210 | { | |
2211 | struct internal_lineno iline; | |
2212 | ||
8b956130 | 2213 | bfd_coff_swap_lineno_in (input_bfd, eline, &iline); |
252b5132 RH |
2214 | |
2215 | if (iline.l_lnno != 0) | |
2216 | iline.l_addr.l_paddr += offset; | |
2217 | else if (iline.l_addr.l_symndx >= 0 | |
2218 | && ((unsigned long) iline.l_addr.l_symndx | |
2219 | < obj_raw_syment_count (input_bfd))) | |
2220 | { | |
2221 | long indx; | |
2222 | ||
57402f1e | 2223 | indx = flaginfo->sym_indices[iline.l_addr.l_symndx]; |
252b5132 RH |
2224 | |
2225 | if (indx < 0) | |
2226 | { | |
2227 | /* These line numbers are attached to a symbol | |
b545f675 ILT |
2228 | which we are stripping. We must discard the |
2229 | line numbers because reading them back with | |
2230 | no associated symbol (or associating them all | |
2231 | with symbol #0) will fail. We can't regain | |
2232 | the space in the output file, but at least | |
2233 | they're dense. */ | |
0a1b45a2 | 2234 | skipping = true; |
252b5132 RH |
2235 | } |
2236 | else | |
2237 | { | |
2238 | struct internal_syment is; | |
2239 | union internal_auxent ia; | |
2240 | ||
2241 | /* Fix up the lnnoptr field in the aux entry of | |
2242 | the symbol. It turns out that we can't do | |
2243 | this when we modify the symbol aux entries, | |
2244 | because gas sometimes screws up the lnnoptr | |
2245 | field and makes it an offset from the start | |
2246 | of the line numbers rather than an absolute | |
2247 | file index. */ | |
2248 | bfd_coff_swap_sym_in (output_bfd, | |
57402f1e | 2249 | (flaginfo->outsyms |
8b956130 NC |
2250 | + ((indx - syment_base) |
2251 | * osymesz)), &is); | |
252b5132 RH |
2252 | if ((ISFCN (is.n_type) |
2253 | || is.n_sclass == C_BLOCK) | |
2254 | && is.n_numaux >= 1) | |
2255 | { | |
8b956130 | 2256 | void *auxptr; |
252b5132 | 2257 | |
57402f1e | 2258 | auxptr = (flaginfo->outsyms |
8b956130 NC |
2259 | + ((indx - syment_base + 1) |
2260 | * osymesz)); | |
252b5132 RH |
2261 | bfd_coff_swap_aux_in (output_bfd, auxptr, |
2262 | is.n_type, is.n_sclass, | |
8b956130 | 2263 | 0, is.n_numaux, &ia); |
252b5132 RH |
2264 | ia.x_sym.x_fcnary.x_fcn.x_lnnoptr = |
2265 | (o->output_section->line_filepos | |
2266 | + o->output_section->lineno_count * linesz | |
57402f1e | 2267 | + eline - flaginfo->linenos); |
8b956130 | 2268 | bfd_coff_swap_aux_out (output_bfd, &ia, |
252b5132 RH |
2269 | is.n_type, is.n_sclass, 0, |
2270 | is.n_numaux, auxptr); | |
2271 | } | |
b545f675 | 2272 | |
0a1b45a2 | 2273 | skipping = false; |
252b5132 RH |
2274 | } |
2275 | ||
2276 | iline.l_addr.l_symndx = indx; | |
2277 | } | |
2278 | ||
b545f675 | 2279 | if (!skipping) |
07d6d2b8 | 2280 | { |
8b956130 | 2281 | bfd_coff_swap_lineno_out (output_bfd, &iline, oeline); |
b545f675 ILT |
2282 | oeline += linesz; |
2283 | } | |
252b5132 RH |
2284 | } |
2285 | ||
dc810e39 AM |
2286 | pos = o->output_section->line_filepos; |
2287 | pos += o->output_section->lineno_count * linesz; | |
57402f1e | 2288 | amt = oeline - flaginfo->linenos; |
dc810e39 | 2289 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
57402f1e | 2290 | || bfd_bwrite (flaginfo->linenos, amt, output_bfd) != amt) |
0a1b45a2 | 2291 | return false; |
252b5132 | 2292 | |
dc810e39 | 2293 | o->output_section->lineno_count += amt / linesz; |
252b5132 RH |
2294 | } |
2295 | } | |
2296 | ||
2297 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE | |
2298 | symbol will be the first symbol in the next input file. In the | |
2299 | normal case, this will save us from writing out the C_FILE symbol | |
2300 | again. */ | |
57402f1e NC |
2301 | if (flaginfo->last_file_index != -1 |
2302 | && (bfd_size_type) flaginfo->last_file_index >= syment_base) | |
252b5132 | 2303 | { |
57402f1e NC |
2304 | flaginfo->last_file.n_value = output_index; |
2305 | bfd_coff_swap_sym_out (output_bfd, &flaginfo->last_file, | |
2306 | (flaginfo->outsyms | |
2307 | + ((flaginfo->last_file_index - syment_base) | |
8b956130 | 2308 | * osymesz))); |
252b5132 RH |
2309 | } |
2310 | ||
2311 | /* Write the modified symbols to the output file. */ | |
57402f1e | 2312 | if (outsym > flaginfo->outsyms) |
252b5132 | 2313 | { |
dc810e39 AM |
2314 | file_ptr pos; |
2315 | bfd_size_type amt; | |
2316 | ||
2317 | pos = obj_sym_filepos (output_bfd) + syment_base * osymesz; | |
57402f1e | 2318 | amt = outsym - flaginfo->outsyms; |
dc810e39 | 2319 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
57402f1e | 2320 | || bfd_bwrite (flaginfo->outsyms, amt, output_bfd) != amt) |
0a1b45a2 | 2321 | return false; |
252b5132 RH |
2322 | |
2323 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) | |
57402f1e | 2324 | + (outsym - flaginfo->outsyms) / osymesz) |
252b5132 RH |
2325 | == output_index); |
2326 | ||
2327 | obj_raw_syment_count (output_bfd) = output_index; | |
2328 | } | |
2329 | ||
2330 | /* Relocate the contents of each section. */ | |
2331 | adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx; | |
2332 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2333 | { | |
2334 | bfd_byte *contents; | |
2335 | struct coff_section_tdata *secdata; | |
2336 | ||
2337 | if (! o->linker_mark) | |
8b956130 NC |
2338 | /* This section was omitted from the link. */ |
2339 | continue; | |
252b5132 | 2340 | |
3722b82f AM |
2341 | if ((o->flags & SEC_LINKER_CREATED) != 0) |
2342 | continue; | |
2343 | ||
252b5132 | 2344 | if ((o->flags & SEC_HAS_CONTENTS) == 0 |
eea6121a | 2345 | || (o->size == 0 && (o->flags & SEC_RELOC) == 0)) |
252b5132 RH |
2346 | { |
2347 | if ((o->flags & SEC_RELOC) != 0 | |
2348 | && o->reloc_count != 0) | |
2349 | { | |
4eca0228 | 2350 | _bfd_error_handler |
695344c0 | 2351 | /* xgettext: c-format */ |
871b3ab2 | 2352 | (_("%pB: relocs in section `%pA', but it has no contents"), |
d003868e | 2353 | input_bfd, o); |
252b5132 | 2354 | bfd_set_error (bfd_error_no_contents); |
0a1b45a2 | 2355 | return false; |
252b5132 RH |
2356 | } |
2357 | ||
2358 | continue; | |
2359 | } | |
2360 | ||
2361 | secdata = coff_section_data (input_bfd, o); | |
2362 | if (secdata != NULL && secdata->contents != NULL) | |
2363 | contents = secdata->contents; | |
2364 | else | |
2365 | { | |
57402f1e | 2366 | contents = flaginfo->contents; |
a29a8af8 | 2367 | if (! bfd_get_full_section_contents (input_bfd, o, &contents)) |
0a1b45a2 | 2368 | return false; |
252b5132 RH |
2369 | } |
2370 | ||
2371 | if ((o->flags & SEC_RELOC) != 0) | |
2372 | { | |
2373 | int target_index; | |
2374 | struct internal_reloc *internal_relocs; | |
2375 | struct internal_reloc *irel; | |
2376 | ||
2377 | /* Read in the relocs. */ | |
2378 | target_index = o->output_section->target_index; | |
2379 | internal_relocs = (_bfd_coff_read_internal_relocs | |
0a1b45a2 | 2380 | (input_bfd, o, false, flaginfo->external_relocs, |
0e1862bb L |
2381 | bfd_link_relocatable (flaginfo->info), |
2382 | (bfd_link_relocatable (flaginfo->info) | |
57402f1e | 2383 | ? (flaginfo->section_info[target_index].relocs |
252b5132 | 2384 | + o->output_section->reloc_count) |
57402f1e | 2385 | : flaginfo->internal_relocs))); |
a29a8af8 KT |
2386 | if (internal_relocs == NULL |
2387 | && o->reloc_count > 0) | |
0a1b45a2 | 2388 | return false; |
252b5132 | 2389 | |
730035f7 DK |
2390 | /* Run through the relocs looking for relocs against symbols |
2391 | coming from discarded sections and complain about them. */ | |
2392 | irel = internal_relocs; | |
2393 | for (; irel < &internal_relocs[o->reloc_count]; irel++) | |
2394 | { | |
2395 | struct coff_link_hash_entry *h; | |
2396 | asection *ps = NULL; | |
2397 | long symndx = irel->r_symndx; | |
2398 | if (symndx < 0) | |
2399 | continue; | |
2400 | h = obj_coff_sym_hashes (input_bfd)[symndx]; | |
2401 | if (h == NULL) | |
2402 | continue; | |
2403 | while (h->root.type == bfd_link_hash_indirect | |
2404 | || h->root.type == bfd_link_hash_warning) | |
2405 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2406 | if (h->root.type == bfd_link_hash_defined | |
2407 | || h->root.type == bfd_link_hash_defweak) | |
2408 | ps = h->root.u.def.section; | |
2409 | if (ps == NULL) | |
2410 | continue; | |
2411 | /* Complain if definition comes from an excluded section. */ | |
2412 | if (ps->flags & SEC_EXCLUDE) | |
57402f1e | 2413 | (*flaginfo->info->callbacks->einfo) |
695344c0 | 2414 | /* xgettext: c-format */ |
871b3ab2 AM |
2415 | (_("%X`%s' referenced in section `%pA' of %pB: " |
2416 | "defined in discarded section `%pA' of %pB\n"), | |
730035f7 DK |
2417 | h->root.root.string, o, input_bfd, ps, ps->owner); |
2418 | } | |
2419 | ||
252b5132 | 2420 | /* Call processor specific code to relocate the section |
07d6d2b8 | 2421 | contents. */ |
57402f1e | 2422 | if (! bfd_coff_relocate_section (output_bfd, flaginfo->info, |
252b5132 RH |
2423 | input_bfd, o, |
2424 | contents, | |
2425 | internal_relocs, | |
57402f1e NC |
2426 | flaginfo->internal_syms, |
2427 | flaginfo->sec_ptrs)) | |
0a1b45a2 | 2428 | return false; |
252b5132 | 2429 | |
0e1862bb | 2430 | if (bfd_link_relocatable (flaginfo->info)) |
252b5132 RH |
2431 | { |
2432 | bfd_vma offset; | |
2433 | struct internal_reloc *irelend; | |
2434 | struct coff_link_hash_entry **rel_hash; | |
2435 | ||
2436 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2437 | irel = internal_relocs; | |
2438 | irelend = irel + o->reloc_count; | |
57402f1e | 2439 | rel_hash = (flaginfo->section_info[target_index].rel_hashes |
252b5132 RH |
2440 | + o->output_section->reloc_count); |
2441 | for (; irel < irelend; irel++, rel_hash++) | |
2442 | { | |
2443 | struct coff_link_hash_entry *h; | |
0a1b45a2 | 2444 | bool adjusted; |
252b5132 RH |
2445 | |
2446 | *rel_hash = NULL; | |
2447 | ||
2448 | /* Adjust the reloc address and symbol index. */ | |
252b5132 RH |
2449 | irel->r_vaddr += offset; |
2450 | ||
2451 | if (irel->r_symndx == -1) | |
2452 | continue; | |
2453 | ||
2454 | if (adjust_symndx) | |
2455 | { | |
57402f1e | 2456 | if (! (*adjust_symndx) (output_bfd, flaginfo->info, |
252b5132 RH |
2457 | input_bfd, o, irel, |
2458 | &adjusted)) | |
0a1b45a2 | 2459 | return false; |
252b5132 RH |
2460 | if (adjusted) |
2461 | continue; | |
2462 | } | |
2463 | ||
2464 | h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx]; | |
2465 | if (h != NULL) | |
2466 | { | |
2467 | /* This is a global symbol. */ | |
2468 | if (h->indx >= 0) | |
2469 | irel->r_symndx = h->indx; | |
2470 | else | |
2471 | { | |
2472 | /* This symbol is being written at the end | |
2473 | of the file, and we do not yet know the | |
2474 | symbol index. We save the pointer to the | |
2475 | hash table entry in the rel_hash list. | |
2476 | We set the indx field to -2 to indicate | |
2477 | that this symbol must not be stripped. */ | |
2478 | *rel_hash = h; | |
2479 | h->indx = -2; | |
2480 | } | |
2481 | } | |
2482 | else | |
2483 | { | |
2484 | long indx; | |
2485 | ||
57402f1e | 2486 | indx = flaginfo->sym_indices[irel->r_symndx]; |
252b5132 RH |
2487 | if (indx != -1) |
2488 | irel->r_symndx = indx; | |
2489 | else | |
2490 | { | |
2491 | struct internal_syment *is; | |
2492 | const char *name; | |
2493 | char buf[SYMNMLEN + 1]; | |
2494 | ||
2495 | /* This reloc is against a symbol we are | |
07d6d2b8 | 2496 | stripping. This should have been handled |
252b5132 | 2497 | by the 'dont_skip_symbol' code in the while |
244148ad | 2498 | loop at the top of this function. */ |
57402f1e | 2499 | is = flaginfo->internal_syms + irel->r_symndx; |
252b5132 RH |
2500 | |
2501 | name = (_bfd_coff_internal_syment_name | |
2502 | (input_bfd, is, buf)); | |
2503 | if (name == NULL) | |
0a1b45a2 | 2504 | return false; |
252b5132 | 2505 | |
1a72702b AM |
2506 | (*flaginfo->info->callbacks->unattached_reloc) |
2507 | (flaginfo->info, name, input_bfd, o, irel->r_vaddr); | |
252b5132 RH |
2508 | } |
2509 | } | |
2510 | } | |
2511 | ||
2512 | o->output_section->reloc_count += o->reloc_count; | |
2513 | } | |
2514 | } | |
2515 | ||
2516 | /* Write out the modified section contents. */ | |
2517 | if (secdata == NULL || secdata->stab_info == NULL) | |
2518 | { | |
61826503 | 2519 | file_ptr loc = (o->output_offset |
bb294208 | 2520 | * bfd_octets_per_byte (output_bfd, o)); |
252b5132 | 2521 | if (! bfd_set_section_contents (output_bfd, o->output_section, |
eea6121a | 2522 | contents, loc, o->size)) |
0a1b45a2 | 2523 | return false; |
252b5132 RH |
2524 | } |
2525 | else | |
2526 | { | |
2527 | if (! (_bfd_write_section_stabs | |
57402f1e | 2528 | (output_bfd, &coff_hash_table (flaginfo->info)->stab_info, |
252b5132 | 2529 | o, &secdata->stab_info, contents))) |
0a1b45a2 | 2530 | return false; |
252b5132 RH |
2531 | } |
2532 | } | |
2533 | ||
57402f1e | 2534 | if (! flaginfo->info->keep_memory |
8b956130 | 2535 | && ! _bfd_coff_free_symbols (input_bfd)) |
0a1b45a2 | 2536 | return false; |
252b5132 | 2537 | |
0a1b45a2 | 2538 | return true; |
252b5132 RH |
2539 | } |
2540 | ||
7686d77d | 2541 | /* Write out a global symbol. Called via bfd_hash_traverse. */ |
252b5132 | 2542 | |
0a1b45a2 | 2543 | bool |
7686d77d | 2544 | _bfd_coff_write_global_sym (struct bfd_hash_entry *bh, void *data) |
252b5132 | 2545 | { |
7686d77d | 2546 | struct coff_link_hash_entry *h = (struct coff_link_hash_entry *) bh; |
57402f1e | 2547 | struct coff_final_link_info *flaginfo = (struct coff_final_link_info *) data; |
252b5132 RH |
2548 | bfd *output_bfd; |
2549 | struct internal_syment isym; | |
2550 | bfd_size_type symesz; | |
2551 | unsigned int i; | |
dc810e39 | 2552 | file_ptr pos; |
252b5132 | 2553 | |
57402f1e | 2554 | output_bfd = flaginfo->output_bfd; |
252b5132 | 2555 | |
e92d460e AM |
2556 | if (h->root.type == bfd_link_hash_warning) |
2557 | { | |
2558 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2559 | if (h->root.type == bfd_link_hash_new) | |
0a1b45a2 | 2560 | return true; |
e92d460e AM |
2561 | } |
2562 | ||
252b5132 | 2563 | if (h->indx >= 0) |
0a1b45a2 | 2564 | return true; |
252b5132 RH |
2565 | |
2566 | if (h->indx != -2 | |
57402f1e NC |
2567 | && (flaginfo->info->strip == strip_all |
2568 | || (flaginfo->info->strip == strip_some | |
2569 | && (bfd_hash_lookup (flaginfo->info->keep_hash, | |
0a1b45a2 | 2570 | h->root.root.string, false, false) |
252b5132 | 2571 | == NULL)))) |
0a1b45a2 | 2572 | return true; |
252b5132 RH |
2573 | |
2574 | switch (h->root.type) | |
2575 | { | |
2576 | default: | |
2577 | case bfd_link_hash_new: | |
e92d460e | 2578 | case bfd_link_hash_warning: |
252b5132 | 2579 | abort (); |
0a1b45a2 | 2580 | return false; |
252b5132 RH |
2581 | |
2582 | case bfd_link_hash_undefined: | |
75cfe082 | 2583 | if (h->indx == -3) |
0a1b45a2 | 2584 | return true; |
75cfe082 | 2585 | /* Fall through. */ |
252b5132 RH |
2586 | case bfd_link_hash_undefweak: |
2587 | isym.n_scnum = N_UNDEF; | |
2588 | isym.n_value = 0; | |
2589 | break; | |
2590 | ||
2591 | case bfd_link_hash_defined: | |
2592 | case bfd_link_hash_defweak: | |
2593 | { | |
2594 | asection *sec; | |
2595 | ||
2596 | sec = h->root.u.def.section->output_section; | |
2597 | if (bfd_is_abs_section (sec)) | |
2598 | isym.n_scnum = N_ABS; | |
2599 | else | |
2600 | isym.n_scnum = sec->target_index; | |
2601 | isym.n_value = (h->root.u.def.value | |
2602 | + h->root.u.def.section->output_offset); | |
57402f1e | 2603 | if (! obj_pe (flaginfo->output_bfd)) |
252b5132 | 2604 | isym.n_value += sec->vma; |
67b0f684 JB |
2605 | #ifdef BFD64 |
2606 | if (isym.n_value > (bfd_vma) 0xffffffff) | |
2607 | { | |
2608 | if (! h->root.linker_def) | |
2609 | _bfd_error_handler | |
2610 | (_("%pB: stripping non-representable symbol '%s' (value " | |
2611 | "%" BFD_VMA_FMT "x)"), | |
2612 | output_bfd, h->root.root.string, isym.n_value); | |
0a1b45a2 | 2613 | return true; |
67b0f684 JB |
2614 | } |
2615 | #endif | |
252b5132 RH |
2616 | } |
2617 | break; | |
2618 | ||
2619 | case bfd_link_hash_common: | |
2620 | isym.n_scnum = N_UNDEF; | |
2621 | isym.n_value = h->root.u.c.size; | |
2622 | break; | |
2623 | ||
2624 | case bfd_link_hash_indirect: | |
252b5132 | 2625 | /* Just ignore these. They can't be handled anyhow. */ |
0a1b45a2 | 2626 | return true; |
252b5132 RH |
2627 | } |
2628 | ||
2629 | if (strlen (h->root.root.string) <= SYMNMLEN) | |
2630 | strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); | |
2631 | else | |
2632 | { | |
0a1b45a2 | 2633 | bool hash; |
252b5132 RH |
2634 | bfd_size_type indx; |
2635 | ||
0a1b45a2 | 2636 | hash = true; |
b560e2ac | 2637 | if (flaginfo->info->traditional_format) |
0a1b45a2 | 2638 | hash = false; |
57402f1e | 2639 | indx = _bfd_stringtab_add (flaginfo->strtab, h->root.root.string, hash, |
0a1b45a2 | 2640 | false); |
252b5132 RH |
2641 | if (indx == (bfd_size_type) -1) |
2642 | { | |
0a1b45a2 AM |
2643 | flaginfo->failed = true; |
2644 | return false; | |
252b5132 RH |
2645 | } |
2646 | isym._n._n_n._n_zeroes = 0; | |
2647 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
2648 | } | |
2649 | ||
96d56e9f | 2650 | isym.n_sclass = h->symbol_class; |
252b5132 RH |
2651 | isym.n_type = h->type; |
2652 | ||
2653 | if (isym.n_sclass == C_NULL) | |
2654 | isym.n_sclass = C_EXT; | |
2655 | ||
2656 | /* If doing task linking and this is the pass where we convert | |
2657 | defined globals to statics, then do that conversion now. If the | |
2658 | symbol is not being converted, just ignore it and it will be | |
e4202681 | 2659 | output during a later pass. */ |
57402f1e | 2660 | if (flaginfo->global_to_static) |
252b5132 | 2661 | { |
e4202681 | 2662 | if (! IS_EXTERNAL (output_bfd, isym)) |
0a1b45a2 | 2663 | return true; |
e4202681 | 2664 | |
252b5132 RH |
2665 | isym.n_sclass = C_STAT; |
2666 | } | |
2667 | ||
5c4491d3 | 2668 | /* When a weak symbol is not overridden by a strong one, |
e4202681 | 2669 | turn it into an external symbol when not building a |
1049f94e | 2670 | shared or relocatable object. */ |
0e1862bb L |
2671 | if (! bfd_link_pic (flaginfo->info) |
2672 | && ! bfd_link_relocatable (flaginfo->info) | |
57402f1e | 2673 | && IS_WEAK_EXTERNAL (flaginfo->output_bfd, isym)) |
e4202681 NC |
2674 | isym.n_sclass = C_EXT; |
2675 | ||
252b5132 | 2676 | isym.n_numaux = h->numaux; |
244148ad | 2677 | |
57402f1e | 2678 | bfd_coff_swap_sym_out (output_bfd, &isym, flaginfo->outsyms); |
252b5132 RH |
2679 | |
2680 | symesz = bfd_coff_symesz (output_bfd); | |
2681 | ||
dc810e39 AM |
2682 | pos = obj_sym_filepos (output_bfd); |
2683 | pos += obj_raw_syment_count (output_bfd) * symesz; | |
2684 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
57402f1e | 2685 | || bfd_bwrite (flaginfo->outsyms, symesz, output_bfd) != symesz) |
252b5132 | 2686 | { |
0a1b45a2 AM |
2687 | flaginfo->failed = true; |
2688 | return false; | |
252b5132 RH |
2689 | } |
2690 | ||
2691 | h->indx = obj_raw_syment_count (output_bfd); | |
2692 | ||
2693 | ++obj_raw_syment_count (output_bfd); | |
2694 | ||
2c546cd8 ILT |
2695 | /* Write out any associated aux entries. Most of the aux entries |
2696 | will have been modified in _bfd_coff_link_input_bfd. We have to | |
2697 | handle section aux entries here, now that we have the final | |
2698 | relocation and line number counts. */ | |
252b5132 RH |
2699 | for (i = 0; i < isym.n_numaux; i++) |
2700 | { | |
2c546cd8 ILT |
2701 | union internal_auxent *auxp; |
2702 | ||
2703 | auxp = h->aux + i; | |
2704 | ||
2705 | /* Look for a section aux entry here using the same tests that | |
07d6d2b8 | 2706 | coff_swap_aux_out uses. */ |
2c546cd8 ILT |
2707 | if (i == 0 |
2708 | && (isym.n_sclass == C_STAT | |
2709 | || isym.n_sclass == C_HIDDEN) | |
2710 | && isym.n_type == T_NULL | |
2711 | && (h->root.type == bfd_link_hash_defined | |
2712 | || h->root.type == bfd_link_hash_defweak)) | |
2713 | { | |
2714 | asection *sec; | |
2715 | ||
2716 | sec = h->root.u.def.section->output_section; | |
2717 | if (sec != NULL) | |
2718 | { | |
eea6121a | 2719 | auxp->x_scn.x_scnlen = sec->size; |
2c546cd8 ILT |
2720 | |
2721 | /* For PE, an overflow on the final link reportedly does | |
07d6d2b8 | 2722 | not matter. FIXME: Why not? */ |
2c546cd8 ILT |
2723 | if (sec->reloc_count > 0xffff |
2724 | && (! obj_pe (output_bfd) | |
0e1862bb | 2725 | || bfd_link_relocatable (flaginfo->info))) |
4eca0228 | 2726 | _bfd_error_handler |
695344c0 | 2727 | /* xgettext: c-format */ |
871b3ab2 | 2728 | (_("%pB: %pA: reloc overflow: %#x > 0xffff"), |
dae82561 | 2729 | output_bfd, sec, sec->reloc_count); |
2c546cd8 ILT |
2730 | |
2731 | if (sec->lineno_count > 0xffff | |
2732 | && (! obj_pe (output_bfd) | |
0e1862bb | 2733 | || bfd_link_relocatable (flaginfo->info))) |
4eca0228 | 2734 | _bfd_error_handler |
695344c0 | 2735 | /* xgettext: c-format */ |
871b3ab2 | 2736 | (_("%pB: warning: %pA: line number overflow: %#x > 0xffff"), |
dae82561 | 2737 | output_bfd, sec, sec->lineno_count); |
2c546cd8 ILT |
2738 | |
2739 | auxp->x_scn.x_nreloc = sec->reloc_count; | |
2740 | auxp->x_scn.x_nlinno = sec->lineno_count; | |
2741 | auxp->x_scn.x_checksum = 0; | |
2742 | auxp->x_scn.x_associated = 0; | |
2743 | auxp->x_scn.x_comdat = 0; | |
2744 | } | |
2745 | } | |
2746 | ||
8b956130 | 2747 | bfd_coff_swap_aux_out (output_bfd, auxp, isym.n_type, |
dc810e39 | 2748 | isym.n_sclass, (int) i, isym.n_numaux, |
57402f1e NC |
2749 | flaginfo->outsyms); |
2750 | if (bfd_bwrite (flaginfo->outsyms, symesz, output_bfd) != symesz) | |
252b5132 | 2751 | { |
0a1b45a2 AM |
2752 | flaginfo->failed = true; |
2753 | return false; | |
252b5132 RH |
2754 | } |
2755 | ++obj_raw_syment_count (output_bfd); | |
2756 | } | |
2757 | ||
0a1b45a2 | 2758 | return true; |
252b5132 RH |
2759 | } |
2760 | ||
2761 | /* Write out task global symbols, converting them to statics. Called | |
2762 | via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do | |
244148ad | 2763 | the dirty work, if the symbol we are processing needs conversion. */ |
252b5132 | 2764 | |
0a1b45a2 | 2765 | bool |
8b956130 | 2766 | _bfd_coff_write_task_globals (struct coff_link_hash_entry *h, void *data) |
252b5132 | 2767 | { |
57402f1e | 2768 | struct coff_final_link_info *flaginfo = (struct coff_final_link_info *) data; |
0a1b45a2 AM |
2769 | bool rtnval = true; |
2770 | bool save_global_to_static; | |
252b5132 | 2771 | |
e92d460e AM |
2772 | if (h->root.type == bfd_link_hash_warning) |
2773 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2774 | ||
252b5132 RH |
2775 | if (h->indx < 0) |
2776 | { | |
2777 | switch (h->root.type) | |
2778 | { | |
2779 | case bfd_link_hash_defined: | |
2780 | case bfd_link_hash_defweak: | |
57402f1e | 2781 | save_global_to_static = flaginfo->global_to_static; |
0a1b45a2 | 2782 | flaginfo->global_to_static = true; |
7686d77d | 2783 | rtnval = _bfd_coff_write_global_sym (&h->root.root, data); |
57402f1e | 2784 | flaginfo->global_to_static = save_global_to_static; |
252b5132 RH |
2785 | break; |
2786 | default: | |
2787 | break; | |
2788 | } | |
2789 | } | |
2790 | return (rtnval); | |
2791 | } | |
2792 | ||
2793 | /* Handle a link order which is supposed to generate a reloc. */ | |
2794 | ||
0a1b45a2 | 2795 | bool |
8b956130 | 2796 | _bfd_coff_reloc_link_order (bfd *output_bfd, |
57402f1e | 2797 | struct coff_final_link_info *flaginfo, |
8b956130 NC |
2798 | asection *output_section, |
2799 | struct bfd_link_order *link_order) | |
252b5132 RH |
2800 | { |
2801 | reloc_howto_type *howto; | |
2802 | struct internal_reloc *irel; | |
2803 | struct coff_link_hash_entry **rel_hash_ptr; | |
2804 | ||
2805 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); | |
2806 | if (howto == NULL) | |
2807 | { | |
2808 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 2809 | return false; |
252b5132 RH |
2810 | } |
2811 | ||
2812 | if (link_order->u.reloc.p->addend != 0) | |
2813 | { | |
2814 | bfd_size_type size; | |
2815 | bfd_byte *buf; | |
2816 | bfd_reloc_status_type rstat; | |
0a1b45a2 | 2817 | bool ok; |
dc810e39 | 2818 | file_ptr loc; |
252b5132 RH |
2819 | |
2820 | size = bfd_get_reloc_size (howto); | |
a50b1753 | 2821 | buf = (bfd_byte *) bfd_zmalloc (size); |
6346d5ca | 2822 | if (buf == NULL && size != 0) |
0a1b45a2 | 2823 | return false; |
252b5132 RH |
2824 | |
2825 | rstat = _bfd_relocate_contents (howto, output_bfd, | |
bb294208 | 2826 | (bfd_vma) link_order->u.reloc.p->addend, |
dc810e39 | 2827 | buf); |
252b5132 RH |
2828 | switch (rstat) |
2829 | { | |
2830 | case bfd_reloc_ok: | |
2831 | break; | |
2832 | default: | |
2833 | case bfd_reloc_outofrange: | |
2834 | abort (); | |
2835 | case bfd_reloc_overflow: | |
1a72702b AM |
2836 | (*flaginfo->info->callbacks->reloc_overflow) |
2837 | (flaginfo->info, NULL, | |
2838 | (link_order->type == bfd_section_reloc_link_order | |
fd361982 | 2839 | ? bfd_section_name (link_order->u.reloc.p->u.section) |
1a72702b AM |
2840 | : link_order->u.reloc.p->u.name), |
2841 | howto->name, link_order->u.reloc.p->addend, | |
2842 | (bfd *) NULL, (asection *) NULL, (bfd_vma) 0); | |
252b5132 RH |
2843 | break; |
2844 | } | |
bb294208 AM |
2845 | loc = link_order->offset * bfd_octets_per_byte (output_bfd, |
2846 | output_section); | |
8b956130 | 2847 | ok = bfd_set_section_contents (output_bfd, output_section, buf, |
07d6d2b8 | 2848 | loc, size); |
252b5132 RH |
2849 | free (buf); |
2850 | if (! ok) | |
0a1b45a2 | 2851 | return false; |
252b5132 RH |
2852 | } |
2853 | ||
2854 | /* Store the reloc information in the right place. It will get | |
2855 | swapped and written out at the end of the final_link routine. */ | |
57402f1e | 2856 | irel = (flaginfo->section_info[output_section->target_index].relocs |
252b5132 | 2857 | + output_section->reloc_count); |
57402f1e | 2858 | rel_hash_ptr = (flaginfo->section_info[output_section->target_index].rel_hashes |
252b5132 RH |
2859 | + output_section->reloc_count); |
2860 | ||
2861 | memset (irel, 0, sizeof (struct internal_reloc)); | |
2862 | *rel_hash_ptr = NULL; | |
2863 | ||
2864 | irel->r_vaddr = output_section->vma + link_order->offset; | |
2865 | ||
2866 | if (link_order->type == bfd_section_reloc_link_order) | |
2867 | { | |
2868 | /* We need to somehow locate a symbol in the right section. The | |
07d6d2b8 AM |
2869 | symbol must either have a value of zero, or we must adjust |
2870 | the addend by the value of the symbol. FIXME: Write this | |
2871 | when we need it. The old linker couldn't handle this anyhow. */ | |
252b5132 RH |
2872 | abort (); |
2873 | *rel_hash_ptr = NULL; | |
2874 | irel->r_symndx = 0; | |
2875 | } | |
2876 | else | |
2877 | { | |
2878 | struct coff_link_hash_entry *h; | |
2879 | ||
2880 | h = ((struct coff_link_hash_entry *) | |
57402f1e | 2881 | bfd_wrapped_link_hash_lookup (output_bfd, flaginfo->info, |
252b5132 | 2882 | link_order->u.reloc.p->u.name, |
0a1b45a2 | 2883 | false, false, true)); |
252b5132 RH |
2884 | if (h != NULL) |
2885 | { | |
2886 | if (h->indx >= 0) | |
2887 | irel->r_symndx = h->indx; | |
2888 | else | |
2889 | { | |
2890 | /* Set the index to -2 to force this symbol to get | |
2891 | written out. */ | |
2892 | h->indx = -2; | |
2893 | *rel_hash_ptr = h; | |
2894 | irel->r_symndx = 0; | |
2895 | } | |
2896 | } | |
2897 | else | |
2898 | { | |
1a72702b AM |
2899 | (*flaginfo->info->callbacks->unattached_reloc) |
2900 | (flaginfo->info, link_order->u.reloc.p->u.name, | |
2901 | (bfd *) NULL, (asection *) NULL, (bfd_vma) 0); | |
252b5132 RH |
2902 | irel->r_symndx = 0; |
2903 | } | |
2904 | } | |
2905 | ||
2906 | /* FIXME: Is this always right? */ | |
2907 | irel->r_type = howto->type; | |
2908 | ||
2909 | /* r_size is only used on the RS/6000, which needs its own linker | |
2910 | routines anyhow. r_extern is only used for ECOFF. */ | |
2911 | ||
2912 | /* FIXME: What is the right value for r_offset? Is zero OK? */ | |
252b5132 RH |
2913 | ++output_section->reloc_count; |
2914 | ||
0a1b45a2 | 2915 | return true; |
252b5132 RH |
2916 | } |
2917 | ||
2918 | /* A basic reloc handling routine which may be used by processors with | |
2919 | simple relocs. */ | |
2920 | ||
0a1b45a2 | 2921 | bool |
8b956130 NC |
2922 | _bfd_coff_generic_relocate_section (bfd *output_bfd, |
2923 | struct bfd_link_info *info, | |
2924 | bfd *input_bfd, | |
2925 | asection *input_section, | |
2926 | bfd_byte *contents, | |
2927 | struct internal_reloc *relocs, | |
2928 | struct internal_syment *syms, | |
2929 | asection **sections) | |
252b5132 RH |
2930 | { |
2931 | struct internal_reloc *rel; | |
2932 | struct internal_reloc *relend; | |
2933 | ||
2934 | rel = relocs; | |
2935 | relend = rel + input_section->reloc_count; | |
2936 | for (; rel < relend; rel++) | |
2937 | { | |
2938 | long symndx; | |
2939 | struct coff_link_hash_entry *h; | |
2940 | struct internal_syment *sym; | |
2941 | bfd_vma addend; | |
2942 | bfd_vma val; | |
3a062fa1 | 2943 | asection *sec; |
252b5132 RH |
2944 | reloc_howto_type *howto; |
2945 | bfd_reloc_status_type rstat; | |
2946 | ||
2947 | symndx = rel->r_symndx; | |
2948 | ||
2949 | if (symndx == -1) | |
2950 | { | |
2951 | h = NULL; | |
2952 | sym = NULL; | |
2953 | } | |
75987f83 ILT |
2954 | else if (symndx < 0 |
2955 | || (unsigned long) symndx >= obj_raw_syment_count (input_bfd)) | |
2956 | { | |
4eca0228 | 2957 | _bfd_error_handler |
695344c0 | 2958 | /* xgettext: c-format */ |
871b3ab2 | 2959 | (_("%pB: illegal symbol index %ld in relocs"), input_bfd, symndx); |
0a1b45a2 | 2960 | return false; |
75987f83 | 2961 | } |
252b5132 | 2962 | else |
244148ad | 2963 | { |
252b5132 RH |
2964 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
2965 | sym = syms + symndx; | |
2966 | } | |
2967 | ||
2968 | /* COFF treats common symbols in one of two ways. Either the | |
07d6d2b8 AM |
2969 | size of the symbol is included in the section contents, or it |
2970 | is not. We assume that the size is not included, and force | |
2971 | the rtype_to_howto function to adjust the addend as needed. */ | |
252b5132 RH |
2972 | if (sym != NULL && sym->n_scnum != 0) |
2973 | addend = - sym->n_value; | |
2974 | else | |
2975 | addend = 0; | |
2976 | ||
252b5132 RH |
2977 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
2978 | sym, &addend); | |
2979 | if (howto == NULL) | |
0a1b45a2 | 2980 | return false; |
252b5132 | 2981 | |
1049f94e | 2982 | /* If we are doing a relocatable link, then we can just ignore |
07d6d2b8 AM |
2983 | a PC relative reloc that is pcrel_offset. It will already |
2984 | have the correct value. If this is not a relocatable link, | |
2985 | then we should ignore the symbol value. */ | |
252b5132 RH |
2986 | if (howto->pc_relative && howto->pcrel_offset) |
2987 | { | |
0e1862bb | 2988 | if (bfd_link_relocatable (info)) |
252b5132 RH |
2989 | continue; |
2990 | if (sym != NULL && sym->n_scnum != 0) | |
2991 | addend += sym->n_value; | |
2992 | } | |
2993 | ||
2994 | val = 0; | |
3a062fa1 | 2995 | sec = NULL; |
252b5132 RH |
2996 | if (h == NULL) |
2997 | { | |
252b5132 RH |
2998 | if (symndx == -1) |
2999 | { | |
3000 | sec = bfd_abs_section_ptr; | |
3001 | val = 0; | |
3002 | } | |
3003 | else | |
3004 | { | |
3005 | sec = sections[symndx]; | |
26c62da0 LW |
3006 | |
3007 | /* PR 19623: Relocations against symbols in | |
3008 | the absolute sections should ignored. */ | |
07d6d2b8 | 3009 | if (bfd_is_abs_section (sec)) |
26c62da0 LW |
3010 | continue; |
3011 | ||
07d6d2b8 | 3012 | val = (sec->output_section->vma |
252b5132 RH |
3013 | + sec->output_offset |
3014 | + sym->n_value); | |
3015 | if (! obj_pe (input_bfd)) | |
3016 | val -= sec->vma; | |
3017 | } | |
3018 | } | |
3019 | else | |
3020 | { | |
3021 | if (h->root.type == bfd_link_hash_defined | |
3022 | || h->root.type == bfd_link_hash_defweak) | |
3023 | { | |
c87db184 | 3024 | /* Defined weak symbols are a GNU extension. */ |
252b5132 RH |
3025 | sec = h->root.u.def.section; |
3026 | val = (h->root.u.def.value | |
3027 | + sec->output_section->vma | |
3028 | + sec->output_offset); | |
c87db184 | 3029 | } |
252b5132 | 3030 | |
bc7a577d | 3031 | else if (h->root.type == bfd_link_hash_undefweak) |
c87db184 | 3032 | { |
07d6d2b8 | 3033 | if (h->symbol_class == C_NT_WEAK && h->numaux == 1) |
c87db184 CF |
3034 | { |
3035 | /* See _Microsoft Portable Executable and Common Object | |
07d6d2b8 | 3036 | File Format Specification_, section 5.5.3. |
0c429e07 NC |
3037 | Note that weak symbols without aux records are a GNU |
3038 | extension. | |
3039 | FIXME: All weak externals are treated as having | |
27198fa9 DS |
3040 | characteristic IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY (1). |
3041 | These behave as per SVR4 ABI: A library member | |
3042 | will resolve a weak external only if a normal | |
3043 | external causes the library member to be linked. | |
3044 | See also linker.c: generic_link_check_archive_element. */ | |
c87db184 | 3045 | struct coff_link_hash_entry *h2 = |
eb503a00 | 3046 | h->auxbfd->tdata.coff_obj_data->sym_hashes[ |
c87db184 CF |
3047 | h->aux->x_sym.x_tagndx.l]; |
3048 | ||
0c429e07 NC |
3049 | if (!h2 || h2->root.type == bfd_link_hash_undefined) |
3050 | { | |
3051 | sec = bfd_abs_section_ptr; | |
3052 | val = 0; | |
3053 | } | |
3054 | else | |
3055 | { | |
3056 | sec = h2->root.u.def.section; | |
3057 | val = h2->root.u.def.value | |
3058 | + sec->output_section->vma + sec->output_offset; | |
3059 | } | |
c87db184 CF |
3060 | } |
3061 | else | |
07d6d2b8 | 3062 | /* This is a GNU extension. */ |
c87db184 CF |
3063 | val = 0; |
3064 | } | |
bc7a577d | 3065 | |
0e1862bb | 3066 | else if (! bfd_link_relocatable (info)) |
6194b866 NC |
3067 | { |
3068 | (*info->callbacks->undefined_symbol) | |
3069 | (info, h->root.root.string, input_bfd, input_section, | |
0a1b45a2 | 3070 | rel->r_vaddr - input_section->vma, true); |
6194b866 NC |
3071 | /* Stop the linker from issueing errors about truncated relocs |
3072 | referencing this undefined symbol by giving it an address | |
3073 | that should be in range. */ | |
3074 | val = input_section->output_section->vma; | |
3075 | } | |
252b5132 RH |
3076 | } |
3077 | ||
3a062fa1 AM |
3078 | /* If the input section defining the symbol has been discarded |
3079 | then zero this reloc field. */ | |
3080 | if (sec != NULL && discarded_section (sec)) | |
3081 | { | |
3082 | _bfd_clear_contents (howto, input_bfd, input_section, | |
0930cb30 | 3083 | contents, rel->r_vaddr - input_section->vma); |
3a062fa1 AM |
3084 | continue; |
3085 | } | |
3086 | ||
252b5132 RH |
3087 | if (info->base_file) |
3088 | { | |
244148ad | 3089 | /* Emit a reloc if the backend thinks it needs it. */ |
252b5132 RH |
3090 | if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto)) |
3091 | { | |
3092 | /* Relocation to a symbol in a section which isn't | |
3093 | absolute. We output the address here to a file. | |
3094 | This file is then read by dlltool when generating the | |
3095 | reloc section. Note that the base file is not | |
d078078d KT |
3096 | portable between systems. We write out a bfd_vma here, |
3097 | and dlltool reads in a bfd_vma. */ | |
3098 | bfd_vma addr = (rel->r_vaddr | |
244148ad KH |
3099 | - input_section->vma |
3100 | + input_section->output_offset | |
252b5132 RH |
3101 | + input_section->output_section->vma); |
3102 | if (coff_data (output_bfd)->pe) | |
3103 | addr -= pe_data(output_bfd)->pe_opthdr.ImageBase; | |
d078078d KT |
3104 | if (fwrite (&addr, 1, sizeof (bfd_vma), (FILE *) info->base_file) |
3105 | != sizeof (bfd_vma)) | |
252b5132 RH |
3106 | { |
3107 | bfd_set_error (bfd_error_system_call); | |
0a1b45a2 | 3108 | return false; |
252b5132 RH |
3109 | } |
3110 | } | |
3111 | } | |
244148ad | 3112 | |
252b5132 RH |
3113 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3114 | contents, | |
3115 | rel->r_vaddr - input_section->vma, | |
3116 | val, addend); | |
3117 | ||
3118 | switch (rstat) | |
3119 | { | |
3120 | default: | |
3121 | abort (); | |
3122 | case bfd_reloc_ok: | |
3123 | break; | |
3124 | case bfd_reloc_outofrange: | |
4eca0228 | 3125 | _bfd_error_handler |
695344c0 | 3126 | /* xgettext: c-format */ |
2dcf00ce AM |
3127 | (_("%pB: bad reloc address %#" PRIx64 " in section `%pA'"), |
3128 | input_bfd, (uint64_t) rel->r_vaddr, input_section); | |
0a1b45a2 | 3129 | return false; |
252b5132 RH |
3130 | case bfd_reloc_overflow: |
3131 | { | |
74edb473 TC |
3132 | |
3133 | /* Ignore any weak undef symbols that may have overflowed. Due to | |
3134 | PR ld/19011 the base address is now in the upper 64-bit address | |
3135 | range. This means that when _bfd_final_link_relocate calculates | |
3136 | the overlow it takes the distance between the symbol and the VMA | |
3137 | which will now always overflow as 0 - 64-bit addr > 32-bit range | |
3138 | of the relocation. This ends up creating PR ld/26659. */ | |
3139 | if (val == 0 | |
3140 | /* Reverse the hack where 4 is subtracted from the addend. */ | |
3141 | && (addend + 4) == 0 | |
3142 | && sym->n_sclass == C_NT_WEAK | |
3143 | && bfd_coff_classify_symbol (output_bfd, sym) | |
3144 | == COFF_SYMBOL_UNDEFINED) | |
3145 | break; | |
3146 | ||
252b5132 RH |
3147 | const char *name; |
3148 | char buf[SYMNMLEN + 1]; | |
3149 | ||
3150 | if (symndx == -1) | |
3151 | name = "*ABS*"; | |
3152 | else if (h != NULL) | |
dfeffb9f | 3153 | name = NULL; |
252b5132 RH |
3154 | else |
3155 | { | |
3156 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
3157 | if (name == NULL) | |
0a1b45a2 | 3158 | return false; |
252b5132 RH |
3159 | } |
3160 | ||
1a72702b AM |
3161 | (*info->callbacks->reloc_overflow) |
3162 | (info, (h ? &h->root : NULL), name, howto->name, | |
3163 | (bfd_vma) 0, input_bfd, input_section, | |
3164 | rel->r_vaddr - input_section->vma); | |
252b5132 RH |
3165 | } |
3166 | } | |
3167 | } | |
0a1b45a2 | 3168 | return true; |
252b5132 | 3169 | } |