Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* COFF specific linker code. |
1049f94e | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
7898deda | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Written by Ian Lance Taylor, Cygnus Support. |
5 | ||
8b956130 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
8b956130 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
8b956130 NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
8b956130 NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
252b5132 RH |
21 | |
22 | /* This file contains the COFF backend linker code. */ | |
23 | ||
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include "bfdlink.h" | |
27 | #include "libbfd.h" | |
28 | #include "coff/internal.h" | |
29 | #include "libcoff.h" | |
30 | ||
8b956130 NC |
31 | static bfd_boolean coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info); |
32 | static bfd_boolean coff_link_check_archive_element (bfd *abfd, struct bfd_link_info *info, bfd_boolean *pneeded); | |
33 | static bfd_boolean coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info); | |
252b5132 | 34 | |
b34976b6 | 35 | /* Return TRUE if SYM is a weak, external symbol. */ |
e4202681 NC |
36 | #define IS_WEAK_EXTERNAL(abfd, sym) \ |
37 | ((sym).n_sclass == C_WEAKEXT \ | |
38 | || (obj_pe (abfd) && (sym).n_sclass == C_NT_WEAK)) | |
39 | ||
b34976b6 | 40 | /* Return TRUE if SYM is an external symbol. */ |
e4202681 NC |
41 | #define IS_EXTERNAL(abfd, sym) \ |
42 | ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym)) | |
43 | ||
b2d638c7 ILT |
44 | /* Define macros so that the ISFCN, et. al., macros work correctly. |
45 | These macros are defined in include/coff/internal.h in terms of | |
46 | N_TMASK, etc. These definitions require a user to define local | |
47 | variables with the appropriate names, and with values from the | |
48 | coff_data (abfd) structure. */ | |
49 | ||
50 | #define N_TMASK n_tmask | |
51 | #define N_BTSHFT n_btshft | |
52 | #define N_BTMASK n_btmask | |
53 | ||
252b5132 RH |
54 | /* Create an entry in a COFF linker hash table. */ |
55 | ||
56 | struct bfd_hash_entry * | |
8b956130 NC |
57 | _bfd_coff_link_hash_newfunc (struct bfd_hash_entry *entry, |
58 | struct bfd_hash_table *table, | |
59 | const char *string) | |
252b5132 RH |
60 | { |
61 | struct coff_link_hash_entry *ret = (struct coff_link_hash_entry *) entry; | |
62 | ||
63 | /* Allocate the structure if it has not already been allocated by a | |
64 | subclass. */ | |
65 | if (ret == (struct coff_link_hash_entry *) NULL) | |
66 | ret = ((struct coff_link_hash_entry *) | |
67 | bfd_hash_allocate (table, sizeof (struct coff_link_hash_entry))); | |
68 | if (ret == (struct coff_link_hash_entry *) NULL) | |
69 | return (struct bfd_hash_entry *) ret; | |
70 | ||
71 | /* Call the allocation method of the superclass. */ | |
72 | ret = ((struct coff_link_hash_entry *) | |
73 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
74 | table, string)); | |
75 | if (ret != (struct coff_link_hash_entry *) NULL) | |
76 | { | |
77 | /* Set local fields. */ | |
78 | ret->indx = -1; | |
79 | ret->type = T_NULL; | |
80 | ret->class = C_NULL; | |
81 | ret->numaux = 0; | |
82 | ret->auxbfd = NULL; | |
83 | ret->aux = NULL; | |
84 | } | |
85 | ||
86 | return (struct bfd_hash_entry *) ret; | |
87 | } | |
88 | ||
89 | /* Initialize a COFF linker hash table. */ | |
90 | ||
b34976b6 | 91 | bfd_boolean |
8b956130 NC |
92 | _bfd_coff_link_hash_table_init (struct coff_link_hash_table *table, |
93 | bfd *abfd, | |
94 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
95 | struct bfd_hash_table *, | |
96 | const char *)) | |
252b5132 RH |
97 | { |
98 | table->stab_info = NULL; | |
99 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
100 | } | |
101 | ||
102 | /* Create a COFF linker hash table. */ | |
103 | ||
104 | struct bfd_link_hash_table * | |
8b956130 | 105 | _bfd_coff_link_hash_table_create (bfd *abfd) |
252b5132 RH |
106 | { |
107 | struct coff_link_hash_table *ret; | |
dc810e39 | 108 | bfd_size_type amt = sizeof (struct coff_link_hash_table); |
252b5132 | 109 | |
8b956130 | 110 | ret = bfd_malloc (amt); |
252b5132 RH |
111 | if (ret == NULL) |
112 | return NULL; | |
8b956130 | 113 | |
252b5132 RH |
114 | if (! _bfd_coff_link_hash_table_init (ret, abfd, |
115 | _bfd_coff_link_hash_newfunc)) | |
116 | { | |
e2d34d7d | 117 | free (ret); |
252b5132 RH |
118 | return (struct bfd_link_hash_table *) NULL; |
119 | } | |
120 | return &ret->root; | |
121 | } | |
122 | ||
123 | /* Create an entry in a COFF debug merge hash table. */ | |
124 | ||
125 | struct bfd_hash_entry * | |
8b956130 NC |
126 | _bfd_coff_debug_merge_hash_newfunc (struct bfd_hash_entry *entry, |
127 | struct bfd_hash_table *table, | |
128 | const char *string) | |
252b5132 RH |
129 | { |
130 | struct coff_debug_merge_hash_entry *ret = | |
131 | (struct coff_debug_merge_hash_entry *) entry; | |
132 | ||
133 | /* Allocate the structure if it has not already been allocated by a | |
134 | subclass. */ | |
135 | if (ret == (struct coff_debug_merge_hash_entry *) NULL) | |
136 | ret = ((struct coff_debug_merge_hash_entry *) | |
137 | bfd_hash_allocate (table, | |
138 | sizeof (struct coff_debug_merge_hash_entry))); | |
139 | if (ret == (struct coff_debug_merge_hash_entry *) NULL) | |
140 | return (struct bfd_hash_entry *) ret; | |
141 | ||
142 | /* Call the allocation method of the superclass. */ | |
143 | ret = ((struct coff_debug_merge_hash_entry *) | |
144 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
145 | if (ret != (struct coff_debug_merge_hash_entry *) NULL) | |
146 | { | |
147 | /* Set local fields. */ | |
148 | ret->types = NULL; | |
149 | } | |
150 | ||
151 | return (struct bfd_hash_entry *) ret; | |
152 | } | |
153 | ||
154 | /* Given a COFF BFD, add symbols to the global hash table as | |
155 | appropriate. */ | |
156 | ||
b34976b6 | 157 | bfd_boolean |
8b956130 | 158 | _bfd_coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
159 | { |
160 | switch (bfd_get_format (abfd)) | |
161 | { | |
162 | case bfd_object: | |
163 | return coff_link_add_object_symbols (abfd, info); | |
164 | case bfd_archive: | |
8b956130 NC |
165 | return _bfd_generic_link_add_archive_symbols |
166 | (abfd, info, coff_link_check_archive_element); | |
252b5132 RH |
167 | default: |
168 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 169 | return FALSE; |
252b5132 RH |
170 | } |
171 | } | |
172 | ||
173 | /* Add symbols from a COFF object file. */ | |
174 | ||
b34976b6 | 175 | static bfd_boolean |
8b956130 | 176 | coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
177 | { |
178 | if (! _bfd_coff_get_external_symbols (abfd)) | |
b34976b6 | 179 | return FALSE; |
252b5132 | 180 | if (! coff_link_add_symbols (abfd, info)) |
b34976b6 | 181 | return FALSE; |
252b5132 | 182 | |
8b956130 NC |
183 | if (! info->keep_memory |
184 | && ! _bfd_coff_free_symbols (abfd)) | |
b34976b6 | 185 | return FALSE; |
252b5132 | 186 | |
b34976b6 | 187 | return TRUE; |
252b5132 RH |
188 | } |
189 | ||
190 | /* Look through the symbols to see if this object file should be | |
191 | included in the link. */ | |
192 | ||
b34976b6 | 193 | static bfd_boolean |
8b956130 NC |
194 | coff_link_check_ar_symbols (bfd *abfd, |
195 | struct bfd_link_info *info, | |
196 | bfd_boolean *pneeded) | |
252b5132 | 197 | { |
252b5132 RH |
198 | bfd_size_type symesz; |
199 | bfd_byte *esym; | |
200 | bfd_byte *esym_end; | |
201 | ||
b34976b6 | 202 | *pneeded = FALSE; |
252b5132 | 203 | |
252b5132 RH |
204 | symesz = bfd_coff_symesz (abfd); |
205 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
206 | esym_end = esym + obj_raw_syment_count (abfd) * symesz; | |
207 | while (esym < esym_end) | |
208 | { | |
209 | struct internal_syment sym; | |
5d54c628 | 210 | enum coff_symbol_classification classification; |
252b5132 | 211 | |
8b956130 | 212 | bfd_coff_swap_sym_in (abfd, esym, &sym); |
252b5132 | 213 | |
5d54c628 ILT |
214 | classification = bfd_coff_classify_symbol (abfd, &sym); |
215 | if (classification == COFF_SYMBOL_GLOBAL | |
216 | || classification == COFF_SYMBOL_COMMON) | |
252b5132 RH |
217 | { |
218 | const char *name; | |
219 | char buf[SYMNMLEN + 1]; | |
220 | struct bfd_link_hash_entry *h; | |
221 | ||
222 | /* This symbol is externally visible, and is defined by this | |
223 | object file. */ | |
252b5132 RH |
224 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); |
225 | if (name == NULL) | |
b34976b6 AM |
226 | return FALSE; |
227 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
252b5132 | 228 | |
8b956130 NC |
229 | /* Auto import. */ |
230 | if (!h | |
231 | && info->pei386_auto_import | |
232 | && !strncmp (name,"__imp_", 6)) | |
233 | h = bfd_link_hash_lookup (info->hash, name + 6, FALSE, FALSE, TRUE); | |
234 | ||
252b5132 RH |
235 | /* We are only interested in symbols that are currently |
236 | undefined. If a symbol is currently known to be common, | |
237 | COFF linkers do not bring in an object file which defines | |
238 | it. */ | |
239 | if (h != (struct bfd_link_hash_entry *) NULL | |
240 | && h->type == bfd_link_hash_undefined) | |
241 | { | |
242 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
b34976b6 AM |
243 | return FALSE; |
244 | *pneeded = TRUE; | |
245 | return TRUE; | |
252b5132 RH |
246 | } |
247 | } | |
248 | ||
249 | esym += (sym.n_numaux + 1) * symesz; | |
250 | } | |
251 | ||
252 | /* We do not need this object file. */ | |
b34976b6 | 253 | return TRUE; |
252b5132 RH |
254 | } |
255 | ||
8b956130 NC |
256 | /* Check a single archive element to see if we need to include it in |
257 | the link. *PNEEDED is set according to whether this element is | |
258 | needed in the link or not. This is called via | |
259 | _bfd_generic_link_add_archive_symbols. */ | |
260 | ||
261 | static bfd_boolean | |
262 | coff_link_check_archive_element (bfd *abfd, | |
263 | struct bfd_link_info *info, | |
264 | bfd_boolean *pneeded) | |
265 | { | |
266 | if (! _bfd_coff_get_external_symbols (abfd)) | |
267 | return FALSE; | |
268 | ||
269 | if (! coff_link_check_ar_symbols (abfd, info, pneeded)) | |
270 | return FALSE; | |
271 | ||
272 | if (*pneeded | |
273 | && ! coff_link_add_symbols (abfd, info)) | |
274 | return FALSE; | |
275 | ||
276 | if ((! info->keep_memory || ! *pneeded) | |
277 | && ! _bfd_coff_free_symbols (abfd)) | |
278 | return FALSE; | |
279 | ||
280 | return TRUE; | |
281 | } | |
282 | ||
252b5132 RH |
283 | /* Add all the symbols from an object file to the hash table. */ |
284 | ||
b34976b6 | 285 | static bfd_boolean |
8b956130 NC |
286 | coff_link_add_symbols (bfd *abfd, |
287 | struct bfd_link_info *info) | |
252b5132 | 288 | { |
b2d638c7 ILT |
289 | unsigned int n_tmask = coff_data (abfd)->local_n_tmask; |
290 | unsigned int n_btshft = coff_data (abfd)->local_n_btshft; | |
291 | unsigned int n_btmask = coff_data (abfd)->local_n_btmask; | |
b34976b6 AM |
292 | bfd_boolean keep_syms; |
293 | bfd_boolean default_copy; | |
252b5132 RH |
294 | bfd_size_type symcount; |
295 | struct coff_link_hash_entry **sym_hash; | |
296 | bfd_size_type symesz; | |
297 | bfd_byte *esym; | |
298 | bfd_byte *esym_end; | |
dc810e39 | 299 | bfd_size_type amt; |
252b5132 RH |
300 | |
301 | /* Keep the symbols during this function, in case the linker needs | |
302 | to read the generic symbols in order to report an error message. */ | |
303 | keep_syms = obj_coff_keep_syms (abfd); | |
b34976b6 | 304 | obj_coff_keep_syms (abfd) = TRUE; |
252b5132 | 305 | |
252b5132 | 306 | if (info->keep_memory) |
b34976b6 | 307 | default_copy = FALSE; |
252b5132 | 308 | else |
b34976b6 | 309 | default_copy = TRUE; |
252b5132 RH |
310 | |
311 | symcount = obj_raw_syment_count (abfd); | |
312 | ||
313 | /* We keep a list of the linker hash table entries that correspond | |
314 | to particular symbols. */ | |
dc810e39 | 315 | amt = symcount * sizeof (struct coff_link_hash_entry *); |
8b956130 | 316 | sym_hash = bfd_zalloc (abfd, amt); |
252b5132 RH |
317 | if (sym_hash == NULL && symcount != 0) |
318 | goto error_return; | |
319 | obj_coff_sym_hashes (abfd) = sym_hash; | |
252b5132 RH |
320 | |
321 | symesz = bfd_coff_symesz (abfd); | |
322 | BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); | |
323 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
324 | esym_end = esym + symcount * symesz; | |
325 | while (esym < esym_end) | |
326 | { | |
327 | struct internal_syment sym; | |
5d54c628 | 328 | enum coff_symbol_classification classification; |
b34976b6 | 329 | bfd_boolean copy; |
252b5132 | 330 | |
8b956130 | 331 | bfd_coff_swap_sym_in (abfd, esym, &sym); |
252b5132 | 332 | |
5d54c628 ILT |
333 | classification = bfd_coff_classify_symbol (abfd, &sym); |
334 | if (classification != COFF_SYMBOL_LOCAL) | |
252b5132 RH |
335 | { |
336 | const char *name; | |
337 | char buf[SYMNMLEN + 1]; | |
338 | flagword flags; | |
339 | asection *section; | |
340 | bfd_vma value; | |
b34976b6 | 341 | bfd_boolean addit; |
252b5132 RH |
342 | |
343 | /* This symbol is externally visible. */ | |
344 | ||
345 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
346 | if (name == NULL) | |
347 | goto error_return; | |
348 | ||
349 | /* We must copy the name into memory if we got it from the | |
350 | syment itself, rather than the string table. */ | |
351 | copy = default_copy; | |
352 | if (sym._n._n_n._n_zeroes != 0 | |
353 | || sym._n._n_n._n_offset == 0) | |
b34976b6 | 354 | copy = TRUE; |
252b5132 RH |
355 | |
356 | value = sym.n_value; | |
357 | ||
5d54c628 | 358 | switch (classification) |
252b5132 | 359 | { |
5d54c628 ILT |
360 | default: |
361 | abort (); | |
362 | ||
363 | case COFF_SYMBOL_GLOBAL: | |
252b5132 RH |
364 | flags = BSF_EXPORT | BSF_GLOBAL; |
365 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
366 | if (! obj_pe (abfd)) | |
367 | value -= section->vma; | |
5d54c628 ILT |
368 | break; |
369 | ||
370 | case COFF_SYMBOL_UNDEFINED: | |
371 | flags = 0; | |
372 | section = bfd_und_section_ptr; | |
373 | break; | |
374 | ||
375 | case COFF_SYMBOL_COMMON: | |
376 | flags = BSF_GLOBAL; | |
377 | section = bfd_com_section_ptr; | |
378 | break; | |
379 | ||
380 | case COFF_SYMBOL_PE_SECTION: | |
381 | flags = BSF_SECTION_SYM | BSF_GLOBAL; | |
382 | section = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
383 | break; | |
252b5132 RH |
384 | } |
385 | ||
e4202681 | 386 | if (IS_WEAK_EXTERNAL (abfd, sym)) |
252b5132 RH |
387 | flags = BSF_WEAK; |
388 | ||
b34976b6 | 389 | addit = TRUE; |
7fd9c191 ILT |
390 | |
391 | /* In the PE format, section symbols actually refer to the | |
392 | start of the output section. We handle them specially | |
393 | here. */ | |
394 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) | |
395 | { | |
396 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
b34976b6 | 397 | name, FALSE, copy, FALSE); |
7fd9c191 ILT |
398 | if (*sym_hash != NULL) |
399 | { | |
400 | if (((*sym_hash)->coff_link_hash_flags | |
401 | & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0 | |
402 | && (*sym_hash)->root.type != bfd_link_hash_undefined | |
403 | && (*sym_hash)->root.type != bfd_link_hash_undefweak) | |
404 | (*_bfd_error_handler) | |
405 | ("Warning: symbol `%s' is both section and non-section", | |
406 | name); | |
407 | ||
b34976b6 | 408 | addit = FALSE; |
7fd9c191 ILT |
409 | } |
410 | } | |
411 | ||
49147fca ILT |
412 | /* The Microsoft Visual C compiler does string pooling by |
413 | hashing the constants to an internal symbol name, and | |
08da05b0 | 414 | relying on the linker comdat support to discard |
49147fca ILT |
415 | duplicate names. However, if one string is a literal and |
416 | one is a data initializer, one will end up in the .data | |
417 | section and one will end up in the .rdata section. The | |
418 | Microsoft linker will combine them into the .data | |
419 | section, which seems to be wrong since it might cause the | |
420 | literal to change. | |
421 | ||
422 | As long as there are no external references to the | |
423 | symbols, which there shouldn't be, we can treat the .data | |
424 | and .rdata instances as separate symbols. The comdat | |
425 | code in the linker will do the appropriate merging. Here | |
426 | we avoid getting a multiple definition error for one of | |
427 | these special symbols. | |
428 | ||
429 | FIXME: I don't think this will work in the case where | |
430 | there are two object files which use the constants as a | |
431 | literal and two object files which use it as a data | |
432 | initializer. One or the other of the second object files | |
433 | is going to wind up with an inappropriate reference. */ | |
434 | if (obj_pe (abfd) | |
435 | && (classification == COFF_SYMBOL_GLOBAL | |
436 | || classification == COFF_SYMBOL_PE_SECTION) | |
437 | && section->comdat != NULL | |
438 | && strncmp (name, "??_", 3) == 0 | |
439 | && strcmp (name, section->comdat->name) == 0) | |
440 | { | |
441 | if (*sym_hash == NULL) | |
442 | *sym_hash = coff_link_hash_lookup (coff_hash_table (info), | |
b34976b6 | 443 | name, FALSE, copy, FALSE); |
49147fca ILT |
444 | if (*sym_hash != NULL |
445 | && (*sym_hash)->root.type == bfd_link_hash_defined | |
446 | && (*sym_hash)->root.u.def.section->comdat != NULL | |
447 | && strcmp ((*sym_hash)->root.u.def.section->comdat->name, | |
448 | section->comdat->name) == 0) | |
b34976b6 | 449 | addit = FALSE; |
49147fca ILT |
450 | } |
451 | ||
7fd9c191 ILT |
452 | if (addit) |
453 | { | |
454 | if (! (bfd_coff_link_add_one_symbol | |
455 | (info, abfd, name, flags, section, value, | |
b34976b6 | 456 | (const char *) NULL, copy, FALSE, |
7fd9c191 ILT |
457 | (struct bfd_link_hash_entry **) sym_hash))) |
458 | goto error_return; | |
459 | } | |
460 | ||
461 | if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) | |
462 | (*sym_hash)->coff_link_hash_flags |= | |
463 | COFF_LINK_HASH_PE_SECTION_SYMBOL; | |
252b5132 | 464 | |
2820a0b7 ILT |
465 | /* Limit the alignment of a common symbol to the possible |
466 | alignment of a section. There is no point to permitting | |
467 | a higher alignment for a common symbol: we can not | |
468 | guarantee it, and it may cause us to allocate extra space | |
469 | in the common section. */ | |
252b5132 RH |
470 | if (section == bfd_com_section_ptr |
471 | && (*sym_hash)->root.type == bfd_link_hash_common | |
472 | && ((*sym_hash)->root.u.c.p->alignment_power | |
473 | > bfd_coff_default_section_alignment_power (abfd))) | |
474 | (*sym_hash)->root.u.c.p->alignment_power | |
475 | = bfd_coff_default_section_alignment_power (abfd); | |
476 | ||
477 | if (info->hash->creator->flavour == bfd_get_flavour (abfd)) | |
478 | { | |
5d3aaa74 ILT |
479 | /* If we don't have any symbol information currently in |
480 | the hash table, or if we are looking at a symbol | |
481 | definition, then update the symbol class and type in | |
482 | the hash table. */ | |
483 | if (((*sym_hash)->class == C_NULL | |
484 | && (*sym_hash)->type == T_NULL) | |
485 | || sym.n_scnum != 0 | |
486 | || (sym.n_value != 0 | |
487 | && (*sym_hash)->root.type != bfd_link_hash_defined | |
488 | && (*sym_hash)->root.type != bfd_link_hash_defweak)) | |
489 | { | |
490 | (*sym_hash)->class = sym.n_sclass; | |
491 | if (sym.n_type != T_NULL) | |
492 | { | |
493 | /* We want to warn if the type changed, but not | |
494 | if it changed from an unspecified type. | |
495 | Testing the whole type byte may work, but the | |
496 | change from (e.g.) a function of unspecified | |
497 | type to function of known type also wants to | |
498 | skip the warning. */ | |
499 | if ((*sym_hash)->type != T_NULL | |
500 | && (*sym_hash)->type != sym.n_type | |
501 | && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type) | |
502 | && (BTYPE ((*sym_hash)->type) == T_NULL | |
503 | || BTYPE (sym.n_type) == T_NULL))) | |
504 | (*_bfd_error_handler) | |
505 | (_("Warning: type of symbol `%s' changed from %d to %d in %s"), | |
506 | name, (*sym_hash)->type, sym.n_type, | |
8f615d07 | 507 | bfd_archive_filename (abfd)); |
5d3aaa74 ILT |
508 | |
509 | /* We don't want to change from a meaningful | |
510 | base type to a null one, but if we know | |
511 | nothing, take what little we might now know. */ | |
512 | if (BTYPE (sym.n_type) != T_NULL | |
513 | || (*sym_hash)->type == T_NULL) | |
514 | (*sym_hash)->type = sym.n_type; | |
515 | } | |
516 | (*sym_hash)->auxbfd = abfd; | |
252b5132 RH |
517 | if (sym.n_numaux != 0) |
518 | { | |
519 | union internal_auxent *alloc; | |
520 | unsigned int i; | |
521 | bfd_byte *eaux; | |
522 | union internal_auxent *iaux; | |
523 | ||
524 | (*sym_hash)->numaux = sym.n_numaux; | |
525 | alloc = ((union internal_auxent *) | |
526 | bfd_hash_allocate (&info->hash->table, | |
527 | (sym.n_numaux | |
528 | * sizeof (*alloc)))); | |
529 | if (alloc == NULL) | |
530 | goto error_return; | |
531 | for (i = 0, eaux = esym + symesz, iaux = alloc; | |
532 | i < sym.n_numaux; | |
533 | i++, eaux += symesz, iaux++) | |
8b956130 | 534 | bfd_coff_swap_aux_in (abfd, eaux, sym.n_type, |
dc810e39 | 535 | sym.n_sclass, (int) i, |
8b956130 | 536 | sym.n_numaux, iaux); |
252b5132 RH |
537 | (*sym_hash)->aux = alloc; |
538 | } | |
539 | } | |
540 | } | |
5d54c628 ILT |
541 | |
542 | if (classification == COFF_SYMBOL_PE_SECTION | |
543 | && (*sym_hash)->numaux != 0) | |
544 | { | |
545 | /* Some PE sections (such as .bss) have a zero size in | |
546 | the section header, but a non-zero size in the AUX | |
547 | record. Correct that here. | |
548 | ||
549 | FIXME: This is not at all the right place to do this. | |
550 | For example, it won't help objdump. This needs to be | |
551 | done when we swap in the section header. */ | |
5d54c628 ILT |
552 | BFD_ASSERT ((*sym_hash)->numaux == 1); |
553 | if (section->_raw_size == 0) | |
554 | section->_raw_size = (*sym_hash)->aux[0].x_scn.x_scnlen; | |
555 | ||
556 | /* FIXME: We could test whether the section sizes | |
557 | matches the size in the aux entry, but apparently | |
558 | that sometimes fails unexpectedly. */ | |
559 | } | |
252b5132 RH |
560 | } |
561 | ||
562 | esym += (sym.n_numaux + 1) * symesz; | |
563 | sym_hash += sym.n_numaux + 1; | |
564 | } | |
565 | ||
1049f94e | 566 | /* If this is a non-traditional, non-relocatable link, try to |
252b5132 | 567 | optimize the handling of any .stab/.stabstr sections. */ |
1049f94e | 568 | if (! info->relocatable |
252b5132 RH |
569 | && ! info->traditional_format |
570 | && info->hash->creator->flavour == bfd_get_flavour (abfd) | |
571 | && (info->strip != strip_all && info->strip != strip_debugger)) | |
572 | { | |
573 | asection *stab, *stabstr; | |
574 | ||
575 | stab = bfd_get_section_by_name (abfd, ".stab"); | |
576 | if (stab != NULL) | |
577 | { | |
578 | stabstr = bfd_get_section_by_name (abfd, ".stabstr"); | |
579 | ||
580 | if (stabstr != NULL) | |
581 | { | |
582 | struct coff_link_hash_table *table; | |
583 | struct coff_section_tdata *secdata; | |
584 | ||
585 | secdata = coff_section_data (abfd, stab); | |
586 | if (secdata == NULL) | |
587 | { | |
dc810e39 | 588 | amt = sizeof (struct coff_section_tdata); |
8b956130 | 589 | stab->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
590 | if (stab->used_by_bfd == NULL) |
591 | goto error_return; | |
592 | secdata = coff_section_data (abfd, stab); | |
593 | } | |
594 | ||
595 | table = coff_hash_table (info); | |
596 | ||
597 | if (! _bfd_link_section_stabs (abfd, &table->stab_info, | |
598 | stab, stabstr, | |
599 | &secdata->stab_info)) | |
600 | goto error_return; | |
601 | } | |
602 | } | |
603 | } | |
604 | ||
605 | obj_coff_keep_syms (abfd) = keep_syms; | |
606 | ||
b34976b6 | 607 | return TRUE; |
252b5132 RH |
608 | |
609 | error_return: | |
610 | obj_coff_keep_syms (abfd) = keep_syms; | |
b34976b6 | 611 | return FALSE; |
252b5132 RH |
612 | } |
613 | \f | |
614 | /* Do the final link step. */ | |
615 | ||
b34976b6 | 616 | bfd_boolean |
8b956130 NC |
617 | _bfd_coff_final_link (bfd *abfd, |
618 | struct bfd_link_info *info) | |
252b5132 RH |
619 | { |
620 | bfd_size_type symesz; | |
621 | struct coff_final_link_info finfo; | |
b34976b6 AM |
622 | bfd_boolean debug_merge_allocated; |
623 | bfd_boolean long_section_names; | |
252b5132 RH |
624 | asection *o; |
625 | struct bfd_link_order *p; | |
dc810e39 AM |
626 | bfd_size_type max_sym_count; |
627 | bfd_size_type max_lineno_count; | |
628 | bfd_size_type max_reloc_count; | |
629 | bfd_size_type max_output_reloc_count; | |
630 | bfd_size_type max_contents_size; | |
252b5132 RH |
631 | file_ptr rel_filepos; |
632 | unsigned int relsz; | |
633 | file_ptr line_filepos; | |
634 | unsigned int linesz; | |
635 | bfd *sub; | |
636 | bfd_byte *external_relocs = NULL; | |
637 | char strbuf[STRING_SIZE_SIZE]; | |
dc810e39 | 638 | bfd_size_type amt; |
252b5132 RH |
639 | |
640 | symesz = bfd_coff_symesz (abfd); | |
641 | ||
642 | finfo.info = info; | |
643 | finfo.output_bfd = abfd; | |
644 | finfo.strtab = NULL; | |
645 | finfo.section_info = NULL; | |
646 | finfo.last_file_index = -1; | |
647 | finfo.last_bf_index = -1; | |
648 | finfo.internal_syms = NULL; | |
649 | finfo.sec_ptrs = NULL; | |
650 | finfo.sym_indices = NULL; | |
651 | finfo.outsyms = NULL; | |
652 | finfo.linenos = NULL; | |
653 | finfo.contents = NULL; | |
654 | finfo.external_relocs = NULL; | |
655 | finfo.internal_relocs = NULL; | |
b34976b6 AM |
656 | finfo.global_to_static = FALSE; |
657 | debug_merge_allocated = FALSE; | |
252b5132 RH |
658 | |
659 | coff_data (abfd)->link_info = info; | |
660 | ||
661 | finfo.strtab = _bfd_stringtab_init (); | |
662 | if (finfo.strtab == NULL) | |
663 | goto error_return; | |
664 | ||
665 | if (! coff_debug_merge_hash_table_init (&finfo.debug_merge)) | |
666 | goto error_return; | |
b34976b6 | 667 | debug_merge_allocated = TRUE; |
252b5132 RH |
668 | |
669 | /* Compute the file positions for all the sections. */ | |
670 | if (! abfd->output_has_begun) | |
671 | { | |
672 | if (! bfd_coff_compute_section_file_positions (abfd)) | |
673 | goto error_return; | |
674 | } | |
675 | ||
676 | /* Count the line numbers and relocation entries required for the | |
677 | output file. Set the file positions for the relocs. */ | |
678 | rel_filepos = obj_relocbase (abfd); | |
679 | relsz = bfd_coff_relsz (abfd); | |
680 | max_contents_size = 0; | |
681 | max_lineno_count = 0; | |
682 | max_reloc_count = 0; | |
683 | ||
b34976b6 | 684 | long_section_names = FALSE; |
252b5132 RH |
685 | for (o = abfd->sections; o != NULL; o = o->next) |
686 | { | |
687 | o->reloc_count = 0; | |
688 | o->lineno_count = 0; | |
689 | for (p = o->link_order_head; p != NULL; p = p->next) | |
690 | { | |
691 | if (p->type == bfd_indirect_link_order) | |
692 | { | |
693 | asection *sec; | |
694 | ||
695 | sec = p->u.indirect.section; | |
696 | ||
697 | /* Mark all sections which are to be included in the | |
698 | link. This will normally be every section. We need | |
699 | to do this so that we can identify any sections which | |
700 | the linker has decided to not include. */ | |
b34976b6 | 701 | sec->linker_mark = TRUE; |
252b5132 RH |
702 | |
703 | if (info->strip == strip_none | |
704 | || info->strip == strip_some) | |
705 | o->lineno_count += sec->lineno_count; | |
706 | ||
1049f94e | 707 | if (info->relocatable) |
252b5132 RH |
708 | o->reloc_count += sec->reloc_count; |
709 | ||
710 | if (sec->_raw_size > max_contents_size) | |
711 | max_contents_size = sec->_raw_size; | |
712 | if (sec->lineno_count > max_lineno_count) | |
713 | max_lineno_count = sec->lineno_count; | |
714 | if (sec->reloc_count > max_reloc_count) | |
715 | max_reloc_count = sec->reloc_count; | |
716 | } | |
1049f94e | 717 | else if (info->relocatable |
252b5132 RH |
718 | && (p->type == bfd_section_reloc_link_order |
719 | || p->type == bfd_symbol_reloc_link_order)) | |
720 | ++o->reloc_count; | |
721 | } | |
722 | if (o->reloc_count == 0) | |
723 | o->rel_filepos = 0; | |
724 | else | |
725 | { | |
726 | o->flags |= SEC_RELOC; | |
727 | o->rel_filepos = rel_filepos; | |
728 | rel_filepos += o->reloc_count * relsz; | |
e9168c1e MM |
729 | /* In PE COFF, if there are at least 0xffff relocations an |
730 | extra relocation will be written out to encode the count. */ | |
731 | if (obj_pe (abfd) && o->reloc_count >= 0xffff) | |
732 | rel_filepos += relsz; | |
252b5132 RH |
733 | } |
734 | ||
735 | if (bfd_coff_long_section_names (abfd) | |
736 | && strlen (o->name) > SCNNMLEN) | |
737 | { | |
738 | /* This section has a long name which must go in the string | |
739 | table. This must correspond to the code in | |
740 | coff_write_object_contents which puts the string index | |
741 | into the s_name field of the section header. That is why | |
b34976b6 AM |
742 | we pass hash as FALSE. */ |
743 | if (_bfd_stringtab_add (finfo.strtab, o->name, FALSE, FALSE) | |
252b5132 RH |
744 | == (bfd_size_type) -1) |
745 | goto error_return; | |
b34976b6 | 746 | long_section_names = TRUE; |
252b5132 RH |
747 | } |
748 | } | |
749 | ||
1049f94e | 750 | /* If doing a relocatable link, allocate space for the pointers we |
252b5132 | 751 | need to keep. */ |
1049f94e | 752 | if (info->relocatable) |
252b5132 RH |
753 | { |
754 | unsigned int i; | |
755 | ||
756 | /* We use section_count + 1, rather than section_count, because | |
757 | the target_index fields are 1 based. */ | |
dc810e39 AM |
758 | amt = abfd->section_count + 1; |
759 | amt *= sizeof (struct coff_link_section_info); | |
8b956130 | 760 | finfo.section_info = bfd_malloc (amt); |
252b5132 RH |
761 | if (finfo.section_info == NULL) |
762 | goto error_return; | |
763 | for (i = 0; i <= abfd->section_count; i++) | |
764 | { | |
765 | finfo.section_info[i].relocs = NULL; | |
766 | finfo.section_info[i].rel_hashes = NULL; | |
767 | } | |
768 | } | |
769 | ||
770 | /* We now know the size of the relocs, so we can determine the file | |
771 | positions of the line numbers. */ | |
772 | line_filepos = rel_filepos; | |
773 | linesz = bfd_coff_linesz (abfd); | |
774 | max_output_reloc_count = 0; | |
775 | for (o = abfd->sections; o != NULL; o = o->next) | |
776 | { | |
777 | if (o->lineno_count == 0) | |
778 | o->line_filepos = 0; | |
779 | else | |
780 | { | |
781 | o->line_filepos = line_filepos; | |
782 | line_filepos += o->lineno_count * linesz; | |
783 | } | |
784 | ||
785 | if (o->reloc_count != 0) | |
786 | { | |
787 | /* We don't know the indices of global symbols until we have | |
788 | written out all the local symbols. For each section in | |
789 | the output file, we keep an array of pointers to hash | |
790 | table entries. Each entry in the array corresponds to a | |
791 | reloc. When we find a reloc against a global symbol, we | |
792 | set the corresponding entry in this array so that we can | |
793 | fix up the symbol index after we have written out all the | |
794 | local symbols. | |
795 | ||
796 | Because of this problem, we also keep the relocs in | |
797 | memory until the end of the link. This wastes memory, | |
1049f94e | 798 | but only when doing a relocatable link, which is not the |
252b5132 | 799 | common case. */ |
1049f94e | 800 | BFD_ASSERT (info->relocatable); |
dc810e39 AM |
801 | amt = o->reloc_count; |
802 | amt *= sizeof (struct internal_reloc); | |
8b956130 | 803 | finfo.section_info[o->target_index].relocs = bfd_malloc (amt); |
dc810e39 AM |
804 | amt = o->reloc_count; |
805 | amt *= sizeof (struct coff_link_hash_entry *); | |
8b956130 | 806 | finfo.section_info[o->target_index].rel_hashes = bfd_malloc (amt); |
252b5132 RH |
807 | if (finfo.section_info[o->target_index].relocs == NULL |
808 | || finfo.section_info[o->target_index].rel_hashes == NULL) | |
809 | goto error_return; | |
810 | ||
811 | if (o->reloc_count > max_output_reloc_count) | |
812 | max_output_reloc_count = o->reloc_count; | |
813 | } | |
814 | ||
815 | /* Reset the reloc and lineno counts, so that we can use them to | |
816 | count the number of entries we have output so far. */ | |
817 | o->reloc_count = 0; | |
818 | o->lineno_count = 0; | |
819 | } | |
820 | ||
821 | obj_sym_filepos (abfd) = line_filepos; | |
822 | ||
823 | /* Figure out the largest number of symbols in an input BFD. Take | |
824 | the opportunity to clear the output_has_begun fields of all the | |
825 | input BFD's. */ | |
826 | max_sym_count = 0; | |
827 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
828 | { | |
829 | size_t sz; | |
830 | ||
b34976b6 | 831 | sub->output_has_begun = FALSE; |
252b5132 RH |
832 | sz = obj_raw_syment_count (sub); |
833 | if (sz > max_sym_count) | |
834 | max_sym_count = sz; | |
835 | } | |
836 | ||
837 | /* Allocate some buffers used while linking. */ | |
dc810e39 | 838 | amt = max_sym_count * sizeof (struct internal_syment); |
8b956130 | 839 | finfo.internal_syms = bfd_malloc (amt); |
dc810e39 | 840 | amt = max_sym_count * sizeof (asection *); |
8b956130 | 841 | finfo.sec_ptrs = bfd_malloc (amt); |
dc810e39 | 842 | amt = max_sym_count * sizeof (long); |
8b956130 NC |
843 | finfo.sym_indices = bfd_malloc (amt); |
844 | finfo.outsyms = bfd_malloc ((max_sym_count + 1) * symesz); | |
dc810e39 | 845 | amt = max_lineno_count * bfd_coff_linesz (abfd); |
8b956130 NC |
846 | finfo.linenos = bfd_malloc (amt); |
847 | finfo.contents = bfd_malloc (max_contents_size); | |
dc810e39 | 848 | amt = max_reloc_count * relsz; |
8b956130 | 849 | finfo.external_relocs = bfd_malloc (amt); |
1049f94e | 850 | if (! info->relocatable) |
dc810e39 AM |
851 | { |
852 | amt = max_reloc_count * sizeof (struct internal_reloc); | |
8b956130 | 853 | finfo.internal_relocs = bfd_malloc (amt); |
dc810e39 | 854 | } |
252b5132 RH |
855 | if ((finfo.internal_syms == NULL && max_sym_count > 0) |
856 | || (finfo.sec_ptrs == NULL && max_sym_count > 0) | |
857 | || (finfo.sym_indices == NULL && max_sym_count > 0) | |
858 | || finfo.outsyms == NULL | |
859 | || (finfo.linenos == NULL && max_lineno_count > 0) | |
860 | || (finfo.contents == NULL && max_contents_size > 0) | |
861 | || (finfo.external_relocs == NULL && max_reloc_count > 0) | |
1049f94e | 862 | || (! info->relocatable |
252b5132 RH |
863 | && finfo.internal_relocs == NULL |
864 | && max_reloc_count > 0)) | |
865 | goto error_return; | |
866 | ||
867 | /* We now know the position of everything in the file, except that | |
868 | we don't know the size of the symbol table and therefore we don't | |
869 | know where the string table starts. We just build the string | |
870 | table in memory as we go along. We process all the relocations | |
871 | for a single input file at once. */ | |
872 | obj_raw_syment_count (abfd) = 0; | |
873 | ||
874 | if (coff_backend_info (abfd)->_bfd_coff_start_final_link) | |
875 | { | |
876 | if (! bfd_coff_start_final_link (abfd, info)) | |
877 | goto error_return; | |
878 | } | |
879 | ||
880 | for (o = abfd->sections; o != NULL; o = o->next) | |
881 | { | |
882 | for (p = o->link_order_head; p != NULL; p = p->next) | |
883 | { | |
884 | if (p->type == bfd_indirect_link_order | |
9bd09e22 | 885 | && bfd_family_coff (p->u.indirect.section->owner)) |
252b5132 RH |
886 | { |
887 | sub = p->u.indirect.section->owner; | |
888 | if (! bfd_coff_link_output_has_begun (sub, & finfo)) | |
889 | { | |
890 | if (! _bfd_coff_link_input_bfd (&finfo, sub)) | |
891 | goto error_return; | |
b34976b6 | 892 | sub->output_has_begun = TRUE; |
252b5132 RH |
893 | } |
894 | } | |
895 | else if (p->type == bfd_section_reloc_link_order | |
896 | || p->type == bfd_symbol_reloc_link_order) | |
897 | { | |
898 | if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p)) | |
899 | goto error_return; | |
900 | } | |
901 | else | |
902 | { | |
903 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
904 | goto error_return; | |
905 | } | |
906 | } | |
907 | } | |
908 | ||
909 | if (! bfd_coff_final_link_postscript (abfd, & finfo)) | |
910 | goto error_return; | |
244148ad | 911 | |
252b5132 RH |
912 | /* Free up the buffers used by _bfd_coff_link_input_bfd. */ |
913 | ||
914 | coff_debug_merge_hash_table_free (&finfo.debug_merge); | |
b34976b6 | 915 | debug_merge_allocated = FALSE; |
252b5132 RH |
916 | |
917 | if (finfo.internal_syms != NULL) | |
918 | { | |
919 | free (finfo.internal_syms); | |
920 | finfo.internal_syms = NULL; | |
921 | } | |
922 | if (finfo.sec_ptrs != NULL) | |
923 | { | |
924 | free (finfo.sec_ptrs); | |
925 | finfo.sec_ptrs = NULL; | |
926 | } | |
927 | if (finfo.sym_indices != NULL) | |
928 | { | |
929 | free (finfo.sym_indices); | |
930 | finfo.sym_indices = NULL; | |
931 | } | |
932 | if (finfo.linenos != NULL) | |
933 | { | |
934 | free (finfo.linenos); | |
935 | finfo.linenos = NULL; | |
936 | } | |
937 | if (finfo.contents != NULL) | |
938 | { | |
939 | free (finfo.contents); | |
940 | finfo.contents = NULL; | |
941 | } | |
942 | if (finfo.external_relocs != NULL) | |
943 | { | |
944 | free (finfo.external_relocs); | |
945 | finfo.external_relocs = NULL; | |
946 | } | |
947 | if (finfo.internal_relocs != NULL) | |
948 | { | |
949 | free (finfo.internal_relocs); | |
950 | finfo.internal_relocs = NULL; | |
951 | } | |
952 | ||
953 | /* The value of the last C_FILE symbol is supposed to be the symbol | |
954 | index of the first external symbol. Write it out again if | |
955 | necessary. */ | |
956 | if (finfo.last_file_index != -1 | |
957 | && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd)) | |
958 | { | |
dc810e39 AM |
959 | file_ptr pos; |
960 | ||
252b5132 | 961 | finfo.last_file.n_value = obj_raw_syment_count (abfd); |
8b956130 NC |
962 | bfd_coff_swap_sym_out (abfd, &finfo.last_file, |
963 | finfo.outsyms); | |
dc810e39 AM |
964 | |
965 | pos = obj_sym_filepos (abfd) + finfo.last_file_index * symesz; | |
966 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
967 | || bfd_bwrite (finfo.outsyms, symesz, abfd) != symesz) | |
b34976b6 | 968 | return FALSE; |
252b5132 RH |
969 | } |
970 | ||
971 | /* If doing task linking (ld --task-link) then make a pass through the | |
972 | global symbols, writing out any that are defined, and making them | |
244148ad | 973 | static. */ |
252b5132 RH |
974 | if (info->task_link) |
975 | { | |
b34976b6 | 976 | finfo.failed = FALSE; |
e92d460e | 977 | coff_link_hash_traverse (coff_hash_table (info), |
8b956130 | 978 | _bfd_coff_write_task_globals, &finfo); |
252b5132 RH |
979 | if (finfo.failed) |
980 | goto error_return; | |
981 | } | |
982 | ||
983 | /* Write out the global symbols. */ | |
b34976b6 | 984 | finfo.failed = FALSE; |
e92d460e | 985 | coff_link_hash_traverse (coff_hash_table (info), |
8b956130 | 986 | _bfd_coff_write_global_sym, &finfo); |
252b5132 RH |
987 | if (finfo.failed) |
988 | goto error_return; | |
989 | ||
990 | /* The outsyms buffer is used by _bfd_coff_write_global_sym. */ | |
991 | if (finfo.outsyms != NULL) | |
992 | { | |
993 | free (finfo.outsyms); | |
994 | finfo.outsyms = NULL; | |
995 | } | |
996 | ||
1049f94e | 997 | if (info->relocatable && max_output_reloc_count > 0) |
252b5132 RH |
998 | { |
999 | /* Now that we have written out all the global symbols, we know | |
1000 | the symbol indices to use for relocs against them, and we can | |
1001 | finally write out the relocs. */ | |
dc810e39 | 1002 | amt = max_output_reloc_count * relsz; |
8b956130 | 1003 | external_relocs = bfd_malloc (amt); |
252b5132 RH |
1004 | if (external_relocs == NULL) |
1005 | goto error_return; | |
1006 | ||
1007 | for (o = abfd->sections; o != NULL; o = o->next) | |
1008 | { | |
1009 | struct internal_reloc *irel; | |
1010 | struct internal_reloc *irelend; | |
1011 | struct coff_link_hash_entry **rel_hash; | |
1012 | bfd_byte *erel; | |
1013 | ||
1014 | if (o->reloc_count == 0) | |
1015 | continue; | |
1016 | ||
1017 | irel = finfo.section_info[o->target_index].relocs; | |
1018 | irelend = irel + o->reloc_count; | |
1019 | rel_hash = finfo.section_info[o->target_index].rel_hashes; | |
1020 | erel = external_relocs; | |
1021 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) | |
1022 | { | |
1023 | if (*rel_hash != NULL) | |
1024 | { | |
1025 | BFD_ASSERT ((*rel_hash)->indx >= 0); | |
1026 | irel->r_symndx = (*rel_hash)->indx; | |
1027 | } | |
8b956130 | 1028 | bfd_coff_swap_reloc_out (abfd, irel, erel); |
252b5132 RH |
1029 | } |
1030 | ||
cd339148 NS |
1031 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0) |
1032 | goto error_return; | |
1033 | if (obj_pe (abfd) && o->reloc_count >= 0xffff) | |
1034 | { | |
1035 | /* In PE COFF, write the count of relocs as the first | |
1036 | reloc. The header overflow bit will be set | |
1037 | elsewhere. */ | |
1038 | struct internal_reloc incount; | |
1039 | bfd_byte *excount = (bfd_byte *)bfd_malloc (relsz); | |
1040 | ||
1041 | memset (&incount, 0, sizeof (incount)); | |
1042 | incount.r_vaddr = o->reloc_count + 1; | |
1043 | bfd_coff_swap_reloc_out (abfd, (PTR) &incount, (PTR) excount); | |
1044 | if (bfd_bwrite (excount, relsz, abfd) != relsz) | |
1045 | /* We'll leak, but it's an error anyway. */ | |
1046 | goto error_return; | |
1047 | free (excount); | |
1048 | } | |
1049 | if (bfd_bwrite (external_relocs, | |
1050 | (bfd_size_type) relsz * o->reloc_count, abfd) | |
1051 | != (bfd_size_type) relsz * o->reloc_count) | |
252b5132 RH |
1052 | goto error_return; |
1053 | } | |
1054 | ||
1055 | free (external_relocs); | |
1056 | external_relocs = NULL; | |
1057 | } | |
1058 | ||
1059 | /* Free up the section information. */ | |
1060 | if (finfo.section_info != NULL) | |
1061 | { | |
1062 | unsigned int i; | |
1063 | ||
1064 | for (i = 0; i < abfd->section_count; i++) | |
1065 | { | |
1066 | if (finfo.section_info[i].relocs != NULL) | |
1067 | free (finfo.section_info[i].relocs); | |
1068 | if (finfo.section_info[i].rel_hashes != NULL) | |
1069 | free (finfo.section_info[i].rel_hashes); | |
1070 | } | |
1071 | free (finfo.section_info); | |
1072 | finfo.section_info = NULL; | |
1073 | } | |
1074 | ||
1075 | /* If we have optimized stabs strings, output them. */ | |
1076 | if (coff_hash_table (info)->stab_info != NULL) | |
1077 | { | |
1078 | if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info)) | |
b34976b6 | 1079 | return FALSE; |
252b5132 RH |
1080 | } |
1081 | ||
1082 | /* Write out the string table. */ | |
1083 | if (obj_raw_syment_count (abfd) != 0 || long_section_names) | |
1084 | { | |
dc810e39 AM |
1085 | file_ptr pos; |
1086 | ||
1087 | pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz; | |
1088 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
b34976b6 | 1089 | return FALSE; |
252b5132 RH |
1090 | |
1091 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 AM |
1092 | H_PUT_32 (abfd, |
1093 | _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE, | |
1094 | strbuf); | |
252b5132 | 1095 | #else |
dc810e39 | 1096 | #error Change H_PUT_32 above |
252b5132 RH |
1097 | #endif |
1098 | ||
dc810e39 AM |
1099 | if (bfd_bwrite (strbuf, (bfd_size_type) STRING_SIZE_SIZE, abfd) |
1100 | != STRING_SIZE_SIZE) | |
b34976b6 | 1101 | return FALSE; |
252b5132 RH |
1102 | |
1103 | if (! _bfd_stringtab_emit (abfd, finfo.strtab)) | |
b34976b6 | 1104 | return FALSE; |
d71f672e | 1105 | |
b34976b6 | 1106 | obj_coff_strings_written (abfd) = TRUE; |
252b5132 RH |
1107 | } |
1108 | ||
1109 | _bfd_stringtab_free (finfo.strtab); | |
1110 | ||
1111 | /* Setting bfd_get_symcount to 0 will cause write_object_contents to | |
1112 | not try to write out the symbols. */ | |
1113 | bfd_get_symcount (abfd) = 0; | |
1114 | ||
b34976b6 | 1115 | return TRUE; |
252b5132 RH |
1116 | |
1117 | error_return: | |
1118 | if (debug_merge_allocated) | |
1119 | coff_debug_merge_hash_table_free (&finfo.debug_merge); | |
1120 | if (finfo.strtab != NULL) | |
1121 | _bfd_stringtab_free (finfo.strtab); | |
1122 | if (finfo.section_info != NULL) | |
1123 | { | |
1124 | unsigned int i; | |
1125 | ||
1126 | for (i = 0; i < abfd->section_count; i++) | |
1127 | { | |
1128 | if (finfo.section_info[i].relocs != NULL) | |
1129 | free (finfo.section_info[i].relocs); | |
1130 | if (finfo.section_info[i].rel_hashes != NULL) | |
1131 | free (finfo.section_info[i].rel_hashes); | |
1132 | } | |
1133 | free (finfo.section_info); | |
1134 | } | |
1135 | if (finfo.internal_syms != NULL) | |
1136 | free (finfo.internal_syms); | |
1137 | if (finfo.sec_ptrs != NULL) | |
1138 | free (finfo.sec_ptrs); | |
1139 | if (finfo.sym_indices != NULL) | |
1140 | free (finfo.sym_indices); | |
1141 | if (finfo.outsyms != NULL) | |
1142 | free (finfo.outsyms); | |
1143 | if (finfo.linenos != NULL) | |
1144 | free (finfo.linenos); | |
1145 | if (finfo.contents != NULL) | |
1146 | free (finfo.contents); | |
1147 | if (finfo.external_relocs != NULL) | |
1148 | free (finfo.external_relocs); | |
1149 | if (finfo.internal_relocs != NULL) | |
1150 | free (finfo.internal_relocs); | |
1151 | if (external_relocs != NULL) | |
1152 | free (external_relocs); | |
b34976b6 | 1153 | return FALSE; |
252b5132 RH |
1154 | } |
1155 | ||
8b956130 | 1156 | /* Parse out a -heap <reserved>,<commit> line. */ |
252b5132 RH |
1157 | |
1158 | static char * | |
8b956130 | 1159 | dores_com (char *ptr, bfd *output_bfd, int heap) |
252b5132 | 1160 | { |
244148ad | 1161 | if (coff_data(output_bfd)->pe) |
252b5132 RH |
1162 | { |
1163 | int val = strtoul (ptr, &ptr, 0); | |
8b956130 | 1164 | |
252b5132 | 1165 | if (heap) |
dc810e39 | 1166 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve = val; |
252b5132 | 1167 | else |
dc810e39 | 1168 | pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve = val; |
252b5132 | 1169 | |
244148ad | 1170 | if (ptr[0] == ',') |
252b5132 | 1171 | { |
dc810e39 | 1172 | val = strtoul (ptr+1, &ptr, 0); |
252b5132 | 1173 | if (heap) |
dc810e39 | 1174 | pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit = val; |
252b5132 | 1175 | else |
dc810e39 | 1176 | pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit = val; |
252b5132 RH |
1177 | } |
1178 | } | |
1179 | return ptr; | |
1180 | } | |
1181 | ||
8b956130 NC |
1182 | static char * |
1183 | get_name (char *ptr, char **dst) | |
252b5132 RH |
1184 | { |
1185 | while (*ptr == ' ') | |
1186 | ptr++; | |
1187 | *dst = ptr; | |
1188 | while (*ptr && *ptr != ' ') | |
1189 | ptr++; | |
1190 | *ptr = 0; | |
1191 | return ptr+1; | |
1192 | } | |
1193 | ||
8b956130 | 1194 | /* Process any magic embedded commands in a section called .drectve. */ |
244148ad | 1195 | |
252b5132 | 1196 | static int |
8b956130 NC |
1197 | process_embedded_commands (bfd *output_bfd, |
1198 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1199 | bfd *abfd) | |
252b5132 RH |
1200 | { |
1201 | asection *sec = bfd_get_section_by_name (abfd, ".drectve"); | |
1202 | char *s; | |
1203 | char *e; | |
1204 | char *copy; | |
8b956130 | 1205 | |
244148ad | 1206 | if (!sec) |
252b5132 | 1207 | return 1; |
244148ad | 1208 | |
dc810e39 | 1209 | copy = bfd_malloc (sec->_raw_size); |
244148ad | 1210 | if (!copy) |
252b5132 | 1211 | return 0; |
8b956130 NC |
1212 | |
1213 | if (! bfd_get_section_contents (abfd, sec, copy, (bfd_vma) 0, sec->_raw_size)) | |
252b5132 RH |
1214 | { |
1215 | free (copy); | |
1216 | return 0; | |
1217 | } | |
1218 | e = copy + sec->_raw_size; | |
8b956130 | 1219 | |
244148ad | 1220 | for (s = copy; s < e ; ) |
252b5132 | 1221 | { |
8b956130 NC |
1222 | if (s[0]!= '-') |
1223 | { | |
1224 | s++; | |
1225 | continue; | |
1226 | } | |
252b5132 RH |
1227 | if (strncmp (s,"-attr", 5) == 0) |
1228 | { | |
1229 | char *name; | |
1230 | char *attribs; | |
1231 | asection *asec; | |
252b5132 RH |
1232 | int loop = 1; |
1233 | int had_write = 0; | |
1234 | int had_read = 0; | |
1235 | int had_exec= 0; | |
1236 | int had_shared= 0; | |
8b956130 | 1237 | |
252b5132 | 1238 | s += 5; |
8b956130 NC |
1239 | s = get_name (s, &name); |
1240 | s = get_name (s, &attribs); | |
1241 | ||
1242 | while (loop) | |
1243 | { | |
1244 | switch (*attribs++) | |
1245 | { | |
1246 | case 'W': | |
1247 | had_write = 1; | |
1248 | break; | |
1249 | case 'R': | |
1250 | had_read = 1; | |
1251 | break; | |
1252 | case 'S': | |
1253 | had_shared = 1; | |
1254 | break; | |
1255 | case 'X': | |
1256 | had_exec = 1; | |
1257 | break; | |
1258 | default: | |
1259 | loop = 0; | |
1260 | } | |
1261 | } | |
252b5132 | 1262 | asec = bfd_get_section_by_name (abfd, name); |
8b956130 NC |
1263 | if (asec) |
1264 | { | |
1265 | if (had_exec) | |
1266 | asec->flags |= SEC_CODE; | |
1267 | if (!had_write) | |
1268 | asec->flags |= SEC_READONLY; | |
1269 | } | |
252b5132 RH |
1270 | } |
1271 | else if (strncmp (s,"-heap", 5) == 0) | |
8b956130 NC |
1272 | s = dores_com (s+5, output_bfd, 1); |
1273 | ||
252b5132 | 1274 | else if (strncmp (s,"-stack", 6) == 0) |
8b956130 NC |
1275 | s = dores_com (s+6, output_bfd, 0); |
1276 | ||
244148ad | 1277 | else |
252b5132 RH |
1278 | s++; |
1279 | } | |
1280 | free (copy); | |
1281 | return 1; | |
1282 | } | |
1283 | ||
1284 | /* Place a marker against all symbols which are used by relocations. | |
1285 | This marker can be picked up by the 'do we skip this symbol ?' | |
1286 | loop in _bfd_coff_link_input_bfd() and used to prevent skipping | |
8b956130 | 1287 | that symbol. */ |
252b5132 RH |
1288 | |
1289 | static void | |
8b956130 | 1290 | mark_relocs (struct coff_final_link_info *finfo, bfd *input_bfd) |
252b5132 RH |
1291 | { |
1292 | asection * a; | |
1293 | ||
1294 | if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0) | |
1295 | return; | |
244148ad | 1296 | |
252b5132 RH |
1297 | for (a = input_bfd->sections; a != (asection *) NULL; a = a->next) |
1298 | { | |
1299 | struct internal_reloc * internal_relocs; | |
1300 | struct internal_reloc * irel; | |
1301 | struct internal_reloc * irelend; | |
1302 | ||
252b5132 RH |
1303 | if ((a->flags & SEC_RELOC) == 0 || a->reloc_count < 1) |
1304 | continue; | |
a8fcf378 NC |
1305 | /* Don't mark relocs in excluded sections. */ |
1306 | if (a->output_section == bfd_abs_section_ptr) | |
1307 | continue; | |
252b5132 RH |
1308 | |
1309 | /* Read in the relocs. */ | |
1310 | internal_relocs = _bfd_coff_read_internal_relocs | |
b34976b6 | 1311 | (input_bfd, a, FALSE, |
252b5132 | 1312 | finfo->external_relocs, |
1049f94e AM |
1313 | finfo->info->relocatable, |
1314 | (finfo->info->relocatable | |
252b5132 RH |
1315 | ? (finfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count) |
1316 | : finfo->internal_relocs) | |
1317 | ); | |
244148ad | 1318 | |
252b5132 RH |
1319 | if (internal_relocs == NULL) |
1320 | continue; | |
1321 | ||
1322 | irel = internal_relocs; | |
1323 | irelend = irel + a->reloc_count; | |
1324 | ||
1325 | /* Place a mark in the sym_indices array (whose entries have | |
1326 | been initialised to 0) for all of the symbols that are used | |
1327 | in the relocation table. This will then be picked up in the | |
8b956130 | 1328 | skip/don't-skip pass. */ |
252b5132 | 1329 | for (; irel < irelend; irel++) |
8b956130 | 1330 | finfo->sym_indices[ irel->r_symndx ] = -1; |
252b5132 RH |
1331 | } |
1332 | } | |
1333 | ||
1334 | /* Link an input file into the linker output file. This function | |
1335 | handles all the sections and relocations of the input file at once. */ | |
1336 | ||
b34976b6 | 1337 | bfd_boolean |
8b956130 | 1338 | _bfd_coff_link_input_bfd (struct coff_final_link_info *finfo, bfd *input_bfd) |
252b5132 | 1339 | { |
b2d638c7 ILT |
1340 | unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask; |
1341 | unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft; | |
1342 | #if 0 | |
1343 | unsigned int n_btmask = coff_data (input_bfd)->local_n_btmask; | |
1344 | #endif | |
b34976b6 | 1345 | bfd_boolean (*adjust_symndx) |
8b956130 NC |
1346 | (bfd *, struct bfd_link_info *, bfd *, asection *, |
1347 | struct internal_reloc *, bfd_boolean *); | |
252b5132 RH |
1348 | bfd *output_bfd; |
1349 | const char *strings; | |
1350 | bfd_size_type syment_base; | |
b34976b6 | 1351 | bfd_boolean copy, hash; |
252b5132 RH |
1352 | bfd_size_type isymesz; |
1353 | bfd_size_type osymesz; | |
1354 | bfd_size_type linesz; | |
1355 | bfd_byte *esym; | |
1356 | bfd_byte *esym_end; | |
1357 | struct internal_syment *isymp; | |
1358 | asection **secpp; | |
1359 | long *indexp; | |
1360 | unsigned long output_index; | |
1361 | bfd_byte *outsym; | |
1362 | struct coff_link_hash_entry **sym_hash; | |
1363 | asection *o; | |
1364 | ||
1365 | /* Move all the symbols to the output file. */ | |
1366 | ||
1367 | output_bfd = finfo->output_bfd; | |
252b5132 RH |
1368 | strings = NULL; |
1369 | syment_base = obj_raw_syment_count (output_bfd); | |
1370 | isymesz = bfd_coff_symesz (input_bfd); | |
1371 | osymesz = bfd_coff_symesz (output_bfd); | |
1372 | linesz = bfd_coff_linesz (input_bfd); | |
1373 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
1374 | ||
b34976b6 | 1375 | copy = FALSE; |
252b5132 | 1376 | if (! finfo->info->keep_memory) |
b34976b6 AM |
1377 | copy = TRUE; |
1378 | hash = TRUE; | |
252b5132 | 1379 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1380 | hash = FALSE; |
252b5132 RH |
1381 | |
1382 | if (! _bfd_coff_get_external_symbols (input_bfd)) | |
b34976b6 | 1383 | return FALSE; |
252b5132 RH |
1384 | |
1385 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
1386 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1387 | isymp = finfo->internal_syms; | |
1388 | secpp = finfo->sec_ptrs; | |
1389 | indexp = finfo->sym_indices; | |
1390 | output_index = syment_base; | |
1391 | outsym = finfo->outsyms; | |
1392 | ||
8b956130 NC |
1393 | if (coff_data (output_bfd)->pe |
1394 | && ! process_embedded_commands (output_bfd, finfo->info, input_bfd)) | |
1395 | return FALSE; | |
252b5132 | 1396 | |
8b956130 NC |
1397 | /* If we are going to perform relocations and also strip/discard some |
1398 | symbols then we must make sure that we do not strip/discard those | |
1399 | symbols that are going to be involved in the relocations. */ | |
252b5132 RH |
1400 | if (( finfo->info->strip != strip_none |
1401 | || finfo->info->discard != discard_none) | |
1049f94e | 1402 | && finfo->info->relocatable) |
252b5132 | 1403 | { |
8b956130 | 1404 | /* Mark the symbol array as 'not-used'. */ |
244148ad KH |
1405 | memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp); |
1406 | ||
252b5132 RH |
1407 | mark_relocs (finfo, input_bfd); |
1408 | } | |
1409 | ||
1410 | while (esym < esym_end) | |
1411 | { | |
1412 | struct internal_syment isym; | |
5d54c628 | 1413 | enum coff_symbol_classification classification; |
b34976b6 AM |
1414 | bfd_boolean skip; |
1415 | bfd_boolean global; | |
1416 | bfd_boolean dont_skip_symbol; | |
252b5132 RH |
1417 | int add; |
1418 | ||
8b956130 | 1419 | bfd_coff_swap_sym_in (input_bfd, esym, isymp); |
252b5132 RH |
1420 | |
1421 | /* Make a copy of *isymp so that the relocate_section function | |
1422 | always sees the original values. This is more reliable than | |
1423 | always recomputing the symbol value even if we are stripping | |
1424 | the symbol. */ | |
1425 | isym = *isymp; | |
1426 | ||
5d54c628 ILT |
1427 | classification = bfd_coff_classify_symbol (input_bfd, &isym); |
1428 | switch (classification) | |
252b5132 | 1429 | { |
5d54c628 ILT |
1430 | default: |
1431 | abort (); | |
1432 | case COFF_SYMBOL_GLOBAL: | |
1433 | case COFF_SYMBOL_PE_SECTION: | |
1434 | case COFF_SYMBOL_LOCAL: | |
1435 | *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum); | |
1436 | break; | |
1437 | case COFF_SYMBOL_COMMON: | |
1438 | *secpp = bfd_com_section_ptr; | |
1439 | break; | |
1440 | case COFF_SYMBOL_UNDEFINED: | |
1441 | *secpp = bfd_und_section_ptr; | |
1442 | break; | |
252b5132 RH |
1443 | } |
1444 | ||
1445 | /* Extract the flag indicating if this symbol is used by a | |
1446 | relocation. */ | |
1447 | if ((finfo->info->strip != strip_none | |
1448 | || finfo->info->discard != discard_none) | |
1049f94e | 1449 | && finfo->info->relocatable) |
252b5132 RH |
1450 | dont_skip_symbol = *indexp; |
1451 | else | |
b34976b6 | 1452 | dont_skip_symbol = FALSE; |
244148ad | 1453 | |
252b5132 RH |
1454 | *indexp = -1; |
1455 | ||
b34976b6 AM |
1456 | skip = FALSE; |
1457 | global = FALSE; | |
252b5132 RH |
1458 | add = 1 + isym.n_numaux; |
1459 | ||
1460 | /* If we are stripping all symbols, we want to skip this one. */ | |
1461 | if (finfo->info->strip == strip_all && ! dont_skip_symbol) | |
b34976b6 | 1462 | skip = TRUE; |
252b5132 RH |
1463 | |
1464 | if (! skip) | |
1465 | { | |
5d54c628 | 1466 | switch (classification) |
252b5132 | 1467 | { |
5d54c628 ILT |
1468 | default: |
1469 | abort (); | |
1470 | case COFF_SYMBOL_GLOBAL: | |
1471 | case COFF_SYMBOL_COMMON: | |
1472 | case COFF_SYMBOL_PE_SECTION: | |
252b5132 RH |
1473 | /* This is a global symbol. Global symbols come at the |
1474 | end of the symbol table, so skip them for now. | |
1475 | Locally defined function symbols, however, are an | |
1476 | exception, and are not moved to the end. */ | |
b34976b6 | 1477 | global = TRUE; |
5d54c628 | 1478 | if (! ISFCN (isym.n_type)) |
b34976b6 | 1479 | skip = TRUE; |
5d54c628 ILT |
1480 | break; |
1481 | ||
1482 | case COFF_SYMBOL_UNDEFINED: | |
1483 | /* Undefined symbols are left for the end. */ | |
b34976b6 AM |
1484 | global = TRUE; |
1485 | skip = TRUE; | |
5d54c628 ILT |
1486 | break; |
1487 | ||
1488 | case COFF_SYMBOL_LOCAL: | |
252b5132 RH |
1489 | /* This is a local symbol. Skip it if we are discarding |
1490 | local symbols. */ | |
1491 | if (finfo->info->discard == discard_all && ! dont_skip_symbol) | |
b34976b6 | 1492 | skip = TRUE; |
5d54c628 | 1493 | break; |
252b5132 RH |
1494 | } |
1495 | } | |
1496 | ||
440c4607 NC |
1497 | #ifndef COFF_WITH_PE |
1498 | /* Skip section symbols for sections which are not going to be | |
862517b6 | 1499 | emitted. */ |
440c4607 | 1500 | if (!skip |
3922a8c1 | 1501 | && dont_skip_symbol == 0 |
440c4607 NC |
1502 | && isym.n_sclass == C_STAT |
1503 | && isym.n_type == T_NULL | |
3922a8c1 NC |
1504 | && isym.n_numaux > 0 |
1505 | && (*secpp)->output_section == bfd_abs_section_ptr) | |
1506 | skip = TRUE; | |
440c4607 NC |
1507 | #endif |
1508 | ||
252b5132 RH |
1509 | /* If we stripping debugging symbols, and this is a debugging |
1510 | symbol, then skip it. FIXME: gas sets the section to N_ABS | |
1511 | for some types of debugging symbols; I don't know if this is | |
1512 | a bug or not. In any case, we handle it here. */ | |
1513 | if (! skip | |
1514 | && finfo->info->strip == strip_debugger | |
1515 | && ! dont_skip_symbol | |
1516 | && (isym.n_scnum == N_DEBUG | |
1517 | || (isym.n_scnum == N_ABS | |
1518 | && (isym.n_sclass == C_AUTO | |
1519 | || isym.n_sclass == C_REG | |
1520 | || isym.n_sclass == C_MOS | |
1521 | || isym.n_sclass == C_MOE | |
1522 | || isym.n_sclass == C_MOU | |
1523 | || isym.n_sclass == C_ARG | |
1524 | || isym.n_sclass == C_REGPARM | |
1525 | || isym.n_sclass == C_FIELD | |
1526 | || isym.n_sclass == C_EOS)))) | |
b34976b6 | 1527 | skip = TRUE; |
252b5132 RH |
1528 | |
1529 | /* If some symbols are stripped based on the name, work out the | |
1530 | name and decide whether to skip this symbol. */ | |
1531 | if (! skip | |
1532 | && (finfo->info->strip == strip_some | |
1533 | || finfo->info->discard == discard_l)) | |
1534 | { | |
1535 | const char *name; | |
1536 | char buf[SYMNMLEN + 1]; | |
1537 | ||
1538 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1539 | if (name == NULL) | |
b34976b6 | 1540 | return FALSE; |
252b5132 RH |
1541 | |
1542 | if (! dont_skip_symbol | |
1543 | && ((finfo->info->strip == strip_some | |
b34976b6 AM |
1544 | && (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, |
1545 | FALSE) == NULL)) | |
252b5132 RH |
1546 | || (! global |
1547 | && finfo->info->discard == discard_l | |
1548 | && bfd_is_local_label_name (input_bfd, name)))) | |
b34976b6 | 1549 | skip = TRUE; |
252b5132 RH |
1550 | } |
1551 | ||
1552 | /* If this is an enum, struct, or union tag, see if we have | |
1553 | already output an identical type. */ | |
1554 | if (! skip | |
1555 | && (finfo->output_bfd->flags & BFD_TRADITIONAL_FORMAT) == 0 | |
1556 | && (isym.n_sclass == C_ENTAG | |
1557 | || isym.n_sclass == C_STRTAG | |
1558 | || isym.n_sclass == C_UNTAG) | |
1559 | && isym.n_numaux == 1) | |
1560 | { | |
1561 | const char *name; | |
1562 | char buf[SYMNMLEN + 1]; | |
1563 | struct coff_debug_merge_hash_entry *mh; | |
1564 | struct coff_debug_merge_type *mt; | |
1565 | union internal_auxent aux; | |
1566 | struct coff_debug_merge_element **epp; | |
1567 | bfd_byte *esl, *eslend; | |
1568 | struct internal_syment *islp; | |
dc810e39 | 1569 | bfd_size_type amt; |
252b5132 RH |
1570 | |
1571 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
1572 | if (name == NULL) | |
b34976b6 | 1573 | return FALSE; |
252b5132 RH |
1574 | |
1575 | /* Ignore fake names invented by compiler; treat them all as | |
1576 | the same name. */ | |
1577 | if (*name == '~' || *name == '.' || *name == '$' | |
1578 | || (*name == bfd_get_symbol_leading_char (input_bfd) | |
1579 | && (name[1] == '~' || name[1] == '.' || name[1] == '$'))) | |
1580 | name = ""; | |
1581 | ||
1582 | mh = coff_debug_merge_hash_lookup (&finfo->debug_merge, name, | |
b34976b6 | 1583 | TRUE, TRUE); |
252b5132 | 1584 | if (mh == NULL) |
b34976b6 | 1585 | return FALSE; |
252b5132 RH |
1586 | |
1587 | /* Allocate memory to hold type information. If this turns | |
1588 | out to be a duplicate, we pass this address to | |
1589 | bfd_release. */ | |
dc810e39 | 1590 | amt = sizeof (struct coff_debug_merge_type); |
8b956130 | 1591 | mt = bfd_alloc (input_bfd, amt); |
252b5132 | 1592 | if (mt == NULL) |
b34976b6 | 1593 | return FALSE; |
252b5132 RH |
1594 | mt->class = isym.n_sclass; |
1595 | ||
1596 | /* Pick up the aux entry, which points to the end of the tag | |
1597 | entries. */ | |
8b956130 | 1598 | bfd_coff_swap_aux_in (input_bfd, (esym + isymesz), |
252b5132 | 1599 | isym.n_type, isym.n_sclass, 0, isym.n_numaux, |
8b956130 | 1600 | &aux); |
252b5132 RH |
1601 | |
1602 | /* Gather the elements. */ | |
1603 | epp = &mt->elements; | |
1604 | mt->elements = NULL; | |
1605 | islp = isymp + 2; | |
1606 | esl = esym + 2 * isymesz; | |
1607 | eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd) | |
1608 | + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz); | |
1609 | while (esl < eslend) | |
1610 | { | |
1611 | const char *elename; | |
1612 | char elebuf[SYMNMLEN + 1]; | |
00692651 | 1613 | char *name_copy; |
252b5132 | 1614 | |
8b956130 | 1615 | bfd_coff_swap_sym_in (input_bfd, esl, islp); |
252b5132 | 1616 | |
dc810e39 | 1617 | amt = sizeof (struct coff_debug_merge_element); |
8b956130 | 1618 | *epp = bfd_alloc (input_bfd, amt); |
252b5132 | 1619 | if (*epp == NULL) |
b34976b6 | 1620 | return FALSE; |
252b5132 RH |
1621 | |
1622 | elename = _bfd_coff_internal_syment_name (input_bfd, islp, | |
1623 | elebuf); | |
1624 | if (elename == NULL) | |
b34976b6 | 1625 | return FALSE; |
252b5132 | 1626 | |
dc810e39 | 1627 | amt = strlen (elename) + 1; |
8b956130 | 1628 | name_copy = bfd_alloc (input_bfd, amt); |
00692651 | 1629 | if (name_copy == NULL) |
b34976b6 | 1630 | return FALSE; |
00692651 | 1631 | strcpy (name_copy, elename); |
252b5132 | 1632 | |
00692651 | 1633 | (*epp)->name = name_copy; |
252b5132 RH |
1634 | (*epp)->type = islp->n_type; |
1635 | (*epp)->tagndx = 0; | |
1636 | if (islp->n_numaux >= 1 | |
1637 | && islp->n_type != T_NULL | |
1638 | && islp->n_sclass != C_EOS) | |
1639 | { | |
1640 | union internal_auxent eleaux; | |
1641 | long indx; | |
1642 | ||
8b956130 | 1643 | bfd_coff_swap_aux_in (input_bfd, (esl + isymesz), |
252b5132 | 1644 | islp->n_type, islp->n_sclass, 0, |
8b956130 | 1645 | islp->n_numaux, &eleaux); |
252b5132 RH |
1646 | indx = eleaux.x_sym.x_tagndx.l; |
1647 | ||
1648 | /* FIXME: If this tagndx entry refers to a symbol | |
1649 | defined later in this file, we just ignore it. | |
1650 | Handling this correctly would be tedious, and may | |
1651 | not be required. */ | |
252b5132 RH |
1652 | if (indx > 0 |
1653 | && (indx | |
1654 | < ((esym - | |
1655 | (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1656 | / (long) isymesz))) | |
1657 | { | |
1658 | (*epp)->tagndx = finfo->sym_indices[indx]; | |
1659 | if ((*epp)->tagndx < 0) | |
1660 | (*epp)->tagndx = 0; | |
1661 | } | |
1662 | } | |
1663 | epp = &(*epp)->next; | |
1664 | *epp = NULL; | |
1665 | ||
1666 | esl += (islp->n_numaux + 1) * isymesz; | |
1667 | islp += islp->n_numaux + 1; | |
1668 | } | |
1669 | ||
1670 | /* See if we already have a definition which matches this | |
1671 | type. We always output the type if it has no elements, | |
1672 | for simplicity. */ | |
1673 | if (mt->elements == NULL) | |
8b956130 | 1674 | bfd_release (input_bfd, mt); |
252b5132 RH |
1675 | else |
1676 | { | |
1677 | struct coff_debug_merge_type *mtl; | |
1678 | ||
1679 | for (mtl = mh->types; mtl != NULL; mtl = mtl->next) | |
1680 | { | |
1681 | struct coff_debug_merge_element *me, *mel; | |
1682 | ||
1683 | if (mtl->class != mt->class) | |
1684 | continue; | |
1685 | ||
1686 | for (me = mt->elements, mel = mtl->elements; | |
1687 | me != NULL && mel != NULL; | |
1688 | me = me->next, mel = mel->next) | |
1689 | { | |
1690 | if (strcmp (me->name, mel->name) != 0 | |
1691 | || me->type != mel->type | |
1692 | || me->tagndx != mel->tagndx) | |
1693 | break; | |
1694 | } | |
1695 | ||
1696 | if (me == NULL && mel == NULL) | |
1697 | break; | |
1698 | } | |
1699 | ||
1700 | if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base) | |
1701 | { | |
1702 | /* This is the first definition of this type. */ | |
1703 | mt->indx = output_index; | |
1704 | mt->next = mh->types; | |
1705 | mh->types = mt; | |
1706 | } | |
1707 | else | |
1708 | { | |
1709 | /* This is a redefinition which can be merged. */ | |
8b956130 | 1710 | bfd_release (input_bfd, mt); |
252b5132 RH |
1711 | *indexp = mtl->indx; |
1712 | add = (eslend - esym) / isymesz; | |
b34976b6 | 1713 | skip = TRUE; |
252b5132 RH |
1714 | } |
1715 | } | |
1716 | } | |
1717 | ||
1718 | /* We now know whether we are to skip this symbol or not. */ | |
1719 | if (! skip) | |
1720 | { | |
1721 | /* Adjust the symbol in order to output it. */ | |
1722 | ||
1723 | if (isym._n._n_n._n_zeroes == 0 | |
1724 | && isym._n._n_n._n_offset != 0) | |
1725 | { | |
1726 | const char *name; | |
1727 | bfd_size_type indx; | |
1728 | ||
1729 | /* This symbol has a long name. Enter it in the string | |
1730 | table we are building. Note that we do not check | |
1731 | bfd_coff_symname_in_debug. That is only true for | |
1732 | XCOFF, and XCOFF requires different linking code | |
1733 | anyhow. */ | |
8b956130 | 1734 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, NULL); |
252b5132 | 1735 | if (name == NULL) |
b34976b6 | 1736 | return FALSE; |
252b5132 RH |
1737 | indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); |
1738 | if (indx == (bfd_size_type) -1) | |
b34976b6 | 1739 | return FALSE; |
252b5132 RH |
1740 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; |
1741 | } | |
1742 | ||
8add8e30 | 1743 | switch (isym.n_sclass) |
252b5132 | 1744 | { |
8add8e30 ILT |
1745 | case C_AUTO: |
1746 | case C_MOS: | |
1747 | case C_EOS: | |
1748 | case C_MOE: | |
1749 | case C_MOU: | |
1750 | case C_UNTAG: | |
1751 | case C_STRTAG: | |
1752 | case C_ENTAG: | |
1753 | case C_TPDEF: | |
1754 | case C_ARG: | |
1755 | case C_USTATIC: | |
1756 | case C_REG: | |
1757 | case C_REGPARM: | |
1758 | case C_FIELD: | |
1759 | /* The symbol value should not be modified. */ | |
1760 | break; | |
1761 | ||
1762 | case C_FCN: | |
1763 | if (obj_pe (input_bfd) | |
1764 | && strcmp (isym.n_name, ".bf") != 0 | |
1765 | && isym.n_scnum > 0) | |
1766 | { | |
1767 | /* For PE, .lf and .ef get their value left alone, | |
1768 | while .bf gets relocated. However, they all have | |
1769 | "real" section numbers, and need to be moved into | |
1770 | the new section. */ | |
1771 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1772 | break; | |
1773 | } | |
1774 | /* Fall through. */ | |
1775 | default: | |
1776 | case C_LABEL: /* Not completely sure about these 2 */ | |
1777 | case C_EXTDEF: | |
1778 | case C_BLOCK: | |
1779 | case C_EFCN: | |
1780 | case C_NULL: | |
1781 | case C_EXT: | |
1782 | case C_STAT: | |
1783 | case C_SECTION: | |
1784 | case C_NT_WEAK: | |
1785 | /* Compute new symbol location. */ | |
1786 | if (isym.n_scnum > 0) | |
1787 | { | |
1788 | isym.n_scnum = (*secpp)->output_section->target_index; | |
1789 | isym.n_value += (*secpp)->output_offset; | |
1790 | if (! obj_pe (input_bfd)) | |
1791 | isym.n_value -= (*secpp)->vma; | |
1792 | if (! obj_pe (finfo->output_bfd)) | |
1793 | isym.n_value += (*secpp)->output_section->vma; | |
1794 | } | |
1795 | break; | |
1796 | ||
1797 | case C_FILE: | |
1798 | /* The value of a C_FILE symbol is the symbol index of | |
1799 | the next C_FILE symbol. The value of the last C_FILE | |
1800 | symbol is the symbol index to the first external | |
1801 | symbol (actually, coff_renumber_symbols does not get | |
1802 | this right--it just sets the value of the last C_FILE | |
1803 | symbol to zero--and nobody has ever complained about | |
1804 | it). We try to get this right, below, just before we | |
1805 | write the symbols out, but in the general case we may | |
1806 | have to write the symbol out twice. */ | |
252b5132 | 1807 | if (finfo->last_file_index != -1 |
cea4409c | 1808 | && finfo->last_file.n_value != (bfd_vma) output_index) |
252b5132 | 1809 | { |
8add8e30 ILT |
1810 | /* We must correct the value of the last C_FILE |
1811 | entry. */ | |
252b5132 RH |
1812 | finfo->last_file.n_value = output_index; |
1813 | if ((bfd_size_type) finfo->last_file_index >= syment_base) | |
1814 | { | |
1815 | /* The last C_FILE symbol is in this input file. */ | |
1816 | bfd_coff_swap_sym_out (output_bfd, | |
8b956130 NC |
1817 | &finfo->last_file, |
1818 | (finfo->outsyms | |
1819 | + ((finfo->last_file_index | |
1820 | - syment_base) | |
1821 | * osymesz))); | |
252b5132 RH |
1822 | } |
1823 | else | |
1824 | { | |
dc810e39 AM |
1825 | file_ptr pos; |
1826 | ||
252b5132 RH |
1827 | /* We have already written out the last C_FILE |
1828 | symbol. We need to write it out again. We | |
1829 | borrow *outsym temporarily. */ | |
1830 | bfd_coff_swap_sym_out (output_bfd, | |
8b956130 | 1831 | &finfo->last_file, outsym); |
dc810e39 AM |
1832 | pos = obj_sym_filepos (output_bfd); |
1833 | pos += finfo->last_file_index * osymesz; | |
1834 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
1835 | || bfd_bwrite (outsym, osymesz, output_bfd) != osymesz) | |
b34976b6 | 1836 | return FALSE; |
252b5132 RH |
1837 | } |
1838 | } | |
1839 | ||
1840 | finfo->last_file_index = output_index; | |
1841 | finfo->last_file = isym; | |
8add8e30 | 1842 | break; |
252b5132 RH |
1843 | } |
1844 | ||
1845 | /* If doing task linking, convert normal global function symbols to | |
e4202681 NC |
1846 | static functions. */ |
1847 | if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym)) | |
252b5132 RH |
1848 | isym.n_sclass = C_STAT; |
1849 | ||
1850 | /* Output the symbol. */ | |
8b956130 | 1851 | bfd_coff_swap_sym_out (output_bfd, &isym, outsym); |
252b5132 RH |
1852 | |
1853 | *indexp = output_index; | |
1854 | ||
1855 | if (global) | |
1856 | { | |
1857 | long indx; | |
1858 | struct coff_link_hash_entry *h; | |
1859 | ||
1860 | indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
1861 | / isymesz); | |
1862 | h = obj_coff_sym_hashes (input_bfd)[indx]; | |
1863 | if (h == NULL) | |
1864 | { | |
1865 | /* This can happen if there were errors earlier in | |
1866 | the link. */ | |
1867 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1868 | return FALSE; |
252b5132 RH |
1869 | } |
1870 | h->indx = output_index; | |
1871 | } | |
1872 | ||
1873 | output_index += add; | |
1874 | outsym += add * osymesz; | |
1875 | } | |
1876 | ||
1877 | esym += add * isymesz; | |
1878 | isymp += add; | |
1879 | ++secpp; | |
1880 | ++indexp; | |
1881 | for (--add; add > 0; --add) | |
1882 | { | |
1883 | *secpp++ = NULL; | |
1884 | *indexp++ = -1; | |
1885 | } | |
1886 | } | |
1887 | ||
1888 | /* Fix up the aux entries. This must be done in a separate pass, | |
1889 | because we don't know the correct symbol indices until we have | |
1890 | already decided which symbols we are going to keep. */ | |
252b5132 RH |
1891 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); |
1892 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
1893 | isymp = finfo->internal_syms; | |
1894 | indexp = finfo->sym_indices; | |
1895 | sym_hash = obj_coff_sym_hashes (input_bfd); | |
1896 | outsym = finfo->outsyms; | |
8b956130 | 1897 | |
252b5132 RH |
1898 | while (esym < esym_end) |
1899 | { | |
1900 | int add; | |
1901 | ||
1902 | add = 1 + isymp->n_numaux; | |
1903 | ||
1904 | if ((*indexp < 0 | |
1905 | || (bfd_size_type) *indexp < syment_base) | |
1906 | && (*sym_hash == NULL | |
1907 | || (*sym_hash)->auxbfd != input_bfd)) | |
1908 | esym += add * isymesz; | |
1909 | else | |
1910 | { | |
1911 | struct coff_link_hash_entry *h; | |
1912 | int i; | |
1913 | ||
1914 | h = NULL; | |
1915 | if (*indexp < 0) | |
1916 | { | |
1917 | h = *sym_hash; | |
1918 | ||
1919 | /* The m68k-motorola-sysv assembler will sometimes | |
1920 | generate two symbols with the same name, but only one | |
1921 | will have aux entries. */ | |
1922 | BFD_ASSERT (isymp->n_numaux == 0 | |
1923 | || h->numaux == isymp->n_numaux); | |
1924 | } | |
1925 | ||
1926 | esym += isymesz; | |
1927 | ||
1928 | if (h == NULL) | |
1929 | outsym += osymesz; | |
1930 | ||
1931 | /* Handle the aux entries. This handling is based on | |
1932 | coff_pointerize_aux. I don't know if it always correct. */ | |
1933 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) | |
1934 | { | |
1935 | union internal_auxent aux; | |
1936 | union internal_auxent *auxp; | |
1937 | ||
1938 | if (h != NULL) | |
1939 | auxp = h->aux + i; | |
1940 | else | |
1941 | { | |
8b956130 NC |
1942 | bfd_coff_swap_aux_in (input_bfd, esym, isymp->n_type, |
1943 | isymp->n_sclass, i, isymp->n_numaux, &aux); | |
252b5132 RH |
1944 | auxp = &aux; |
1945 | } | |
1946 | ||
1947 | if (isymp->n_sclass == C_FILE) | |
1948 | { | |
1949 | /* If this is a long filename, we must put it in the | |
1950 | string table. */ | |
1951 | if (auxp->x_file.x_n.x_zeroes == 0 | |
1952 | && auxp->x_file.x_n.x_offset != 0) | |
1953 | { | |
1954 | const char *filename; | |
1955 | bfd_size_type indx; | |
1956 | ||
1957 | BFD_ASSERT (auxp->x_file.x_n.x_offset | |
1958 | >= STRING_SIZE_SIZE); | |
1959 | if (strings == NULL) | |
1960 | { | |
1961 | strings = _bfd_coff_read_string_table (input_bfd); | |
1962 | if (strings == NULL) | |
b34976b6 | 1963 | return FALSE; |
252b5132 RH |
1964 | } |
1965 | filename = strings + auxp->x_file.x_n.x_offset; | |
1966 | indx = _bfd_stringtab_add (finfo->strtab, filename, | |
1967 | hash, copy); | |
1968 | if (indx == (bfd_size_type) -1) | |
b34976b6 | 1969 | return FALSE; |
252b5132 RH |
1970 | auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; |
1971 | } | |
1972 | } | |
1973 | else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) | |
1974 | { | |
1975 | unsigned long indx; | |
1976 | ||
1977 | if (ISFCN (isymp->n_type) | |
1978 | || ISTAG (isymp->n_sclass) | |
1979 | || isymp->n_sclass == C_BLOCK | |
1980 | || isymp->n_sclass == C_FCN) | |
1981 | { | |
1982 | indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l; | |
1983 | if (indx > 0 | |
1984 | && indx < obj_raw_syment_count (input_bfd)) | |
1985 | { | |
1986 | /* We look forward through the symbol for | |
1987 | the index of the next symbol we are going | |
1988 | to include. I don't know if this is | |
1989 | entirely right. */ | |
1990 | while ((finfo->sym_indices[indx] < 0 | |
1991 | || ((bfd_size_type) finfo->sym_indices[indx] | |
1992 | < syment_base)) | |
1993 | && indx < obj_raw_syment_count (input_bfd)) | |
1994 | ++indx; | |
1995 | if (indx >= obj_raw_syment_count (input_bfd)) | |
1996 | indx = output_index; | |
1997 | else | |
1998 | indx = finfo->sym_indices[indx]; | |
1999 | auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx; | |
2000 | } | |
2001 | } | |
2002 | ||
2003 | indx = auxp->x_sym.x_tagndx.l; | |
2004 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) | |
2005 | { | |
2006 | long symindx; | |
2007 | ||
2008 | symindx = finfo->sym_indices[indx]; | |
2009 | if (symindx < 0) | |
2010 | auxp->x_sym.x_tagndx.l = 0; | |
2011 | else | |
2012 | auxp->x_sym.x_tagndx.l = symindx; | |
2013 | } | |
2014 | ||
2015 | /* The .bf symbols are supposed to be linked through | |
2016 | the endndx field. We need to carry this list | |
2017 | across object files. */ | |
2018 | if (i == 0 | |
2019 | && h == NULL | |
2020 | && isymp->n_sclass == C_FCN | |
2021 | && (isymp->_n._n_n._n_zeroes != 0 | |
2022 | || isymp->_n._n_n._n_offset == 0) | |
2023 | && isymp->_n._n_name[0] == '.' | |
2024 | && isymp->_n._n_name[1] == 'b' | |
2025 | && isymp->_n._n_name[2] == 'f' | |
2026 | && isymp->_n._n_name[3] == '\0') | |
2027 | { | |
2028 | if (finfo->last_bf_index != -1) | |
2029 | { | |
2030 | finfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
2031 | *indexp; | |
2032 | ||
2033 | if ((bfd_size_type) finfo->last_bf_index | |
2034 | >= syment_base) | |
2035 | { | |
8b956130 | 2036 | void *auxout; |
252b5132 RH |
2037 | |
2038 | /* The last .bf symbol is in this input | |
2039 | file. This will only happen if the | |
2040 | assembler did not set up the .bf | |
2041 | endndx symbols correctly. */ | |
8b956130 NC |
2042 | auxout = (finfo->outsyms |
2043 | + ((finfo->last_bf_index | |
2044 | - syment_base) | |
2045 | * osymesz)); | |
2046 | ||
252b5132 | 2047 | bfd_coff_swap_aux_out (output_bfd, |
8b956130 | 2048 | &finfo->last_bf, |
252b5132 RH |
2049 | isymp->n_type, |
2050 | isymp->n_sclass, | |
2051 | 0, isymp->n_numaux, | |
2052 | auxout); | |
2053 | } | |
2054 | else | |
2055 | { | |
dc810e39 AM |
2056 | file_ptr pos; |
2057 | ||
252b5132 RH |
2058 | /* We have already written out the last |
2059 | .bf aux entry. We need to write it | |
2060 | out again. We borrow *outsym | |
2061 | temporarily. FIXME: This case should | |
2062 | be made faster. */ | |
2063 | bfd_coff_swap_aux_out (output_bfd, | |
8b956130 | 2064 | &finfo->last_bf, |
252b5132 RH |
2065 | isymp->n_type, |
2066 | isymp->n_sclass, | |
2067 | 0, isymp->n_numaux, | |
8b956130 | 2068 | outsym); |
dc810e39 AM |
2069 | pos = obj_sym_filepos (output_bfd); |
2070 | pos += finfo->last_bf_index * osymesz; | |
2071 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2072 | || (bfd_bwrite (outsym, osymesz, output_bfd) | |
2073 | != osymesz)) | |
b34976b6 | 2074 | return FALSE; |
252b5132 RH |
2075 | } |
2076 | } | |
2077 | ||
2078 | if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0) | |
2079 | finfo->last_bf_index = -1; | |
2080 | else | |
2081 | { | |
2082 | /* The endndx field of this aux entry must | |
2083 | be updated with the symbol number of the | |
2084 | next .bf symbol. */ | |
2085 | finfo->last_bf = *auxp; | |
2086 | finfo->last_bf_index = (((outsym - finfo->outsyms) | |
2087 | / osymesz) | |
2088 | + syment_base); | |
2089 | } | |
2090 | } | |
2091 | } | |
2092 | ||
2093 | if (h == NULL) | |
2094 | { | |
8b956130 | 2095 | bfd_coff_swap_aux_out (output_bfd, auxp, isymp->n_type, |
252b5132 | 2096 | isymp->n_sclass, i, isymp->n_numaux, |
8b956130 | 2097 | outsym); |
252b5132 RH |
2098 | outsym += osymesz; |
2099 | } | |
2100 | ||
2101 | esym += isymesz; | |
2102 | } | |
2103 | } | |
2104 | ||
2105 | indexp += add; | |
2106 | isymp += add; | |
2107 | sym_hash += add; | |
2108 | } | |
2109 | ||
2110 | /* Relocate the line numbers, unless we are stripping them. */ | |
2111 | if (finfo->info->strip == strip_none | |
2112 | || finfo->info->strip == strip_some) | |
2113 | { | |
2114 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2115 | { | |
2116 | bfd_vma offset; | |
2117 | bfd_byte *eline; | |
2118 | bfd_byte *elineend; | |
b545f675 | 2119 | bfd_byte *oeline; |
b34976b6 | 2120 | bfd_boolean skipping; |
dc810e39 AM |
2121 | file_ptr pos; |
2122 | bfd_size_type amt; | |
252b5132 RH |
2123 | |
2124 | /* FIXME: If SEC_HAS_CONTENTS is not for the section, then | |
2125 | build_link_order in ldwrite.c will not have created a | |
2126 | link order, which means that we will not have seen this | |
2127 | input section in _bfd_coff_final_link, which means that | |
2128 | we will not have allocated space for the line numbers of | |
2129 | this section. I don't think line numbers can be | |
2130 | meaningful for a section which does not have | |
2131 | SEC_HAS_CONTENTS set, but, if they do, this must be | |
2132 | changed. */ | |
2133 | if (o->lineno_count == 0 | |
2134 | || (o->output_section->flags & SEC_HAS_CONTENTS) == 0) | |
2135 | continue; | |
2136 | ||
2137 | if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0 | |
dc810e39 | 2138 | || bfd_bread (finfo->linenos, linesz * o->lineno_count, |
252b5132 | 2139 | input_bfd) != linesz * o->lineno_count) |
b34976b6 | 2140 | return FALSE; |
252b5132 RH |
2141 | |
2142 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2143 | eline = finfo->linenos; | |
b545f675 | 2144 | oeline = finfo->linenos; |
252b5132 | 2145 | elineend = eline + linesz * o->lineno_count; |
b34976b6 | 2146 | skipping = FALSE; |
252b5132 RH |
2147 | for (; eline < elineend; eline += linesz) |
2148 | { | |
2149 | struct internal_lineno iline; | |
2150 | ||
8b956130 | 2151 | bfd_coff_swap_lineno_in (input_bfd, eline, &iline); |
252b5132 RH |
2152 | |
2153 | if (iline.l_lnno != 0) | |
2154 | iline.l_addr.l_paddr += offset; | |
2155 | else if (iline.l_addr.l_symndx >= 0 | |
2156 | && ((unsigned long) iline.l_addr.l_symndx | |
2157 | < obj_raw_syment_count (input_bfd))) | |
2158 | { | |
2159 | long indx; | |
2160 | ||
2161 | indx = finfo->sym_indices[iline.l_addr.l_symndx]; | |
2162 | ||
2163 | if (indx < 0) | |
2164 | { | |
2165 | /* These line numbers are attached to a symbol | |
b545f675 ILT |
2166 | which we are stripping. We must discard the |
2167 | line numbers because reading them back with | |
2168 | no associated symbol (or associating them all | |
2169 | with symbol #0) will fail. We can't regain | |
2170 | the space in the output file, but at least | |
2171 | they're dense. */ | |
b34976b6 | 2172 | skipping = TRUE; |
252b5132 RH |
2173 | } |
2174 | else | |
2175 | { | |
2176 | struct internal_syment is; | |
2177 | union internal_auxent ia; | |
2178 | ||
2179 | /* Fix up the lnnoptr field in the aux entry of | |
2180 | the symbol. It turns out that we can't do | |
2181 | this when we modify the symbol aux entries, | |
2182 | because gas sometimes screws up the lnnoptr | |
2183 | field and makes it an offset from the start | |
2184 | of the line numbers rather than an absolute | |
2185 | file index. */ | |
2186 | bfd_coff_swap_sym_in (output_bfd, | |
8b956130 NC |
2187 | (finfo->outsyms |
2188 | + ((indx - syment_base) | |
2189 | * osymesz)), &is); | |
252b5132 RH |
2190 | if ((ISFCN (is.n_type) |
2191 | || is.n_sclass == C_BLOCK) | |
2192 | && is.n_numaux >= 1) | |
2193 | { | |
8b956130 | 2194 | void *auxptr; |
252b5132 | 2195 | |
8b956130 NC |
2196 | auxptr = (finfo->outsyms |
2197 | + ((indx - syment_base + 1) | |
2198 | * osymesz)); | |
252b5132 RH |
2199 | bfd_coff_swap_aux_in (output_bfd, auxptr, |
2200 | is.n_type, is.n_sclass, | |
8b956130 | 2201 | 0, is.n_numaux, &ia); |
252b5132 RH |
2202 | ia.x_sym.x_fcnary.x_fcn.x_lnnoptr = |
2203 | (o->output_section->line_filepos | |
2204 | + o->output_section->lineno_count * linesz | |
2205 | + eline - finfo->linenos); | |
8b956130 | 2206 | bfd_coff_swap_aux_out (output_bfd, &ia, |
252b5132 RH |
2207 | is.n_type, is.n_sclass, 0, |
2208 | is.n_numaux, auxptr); | |
2209 | } | |
b545f675 | 2210 | |
b34976b6 | 2211 | skipping = FALSE; |
252b5132 RH |
2212 | } |
2213 | ||
2214 | iline.l_addr.l_symndx = indx; | |
2215 | } | |
2216 | ||
b545f675 ILT |
2217 | if (!skipping) |
2218 | { | |
8b956130 | 2219 | bfd_coff_swap_lineno_out (output_bfd, &iline, oeline); |
b545f675 ILT |
2220 | oeline += linesz; |
2221 | } | |
252b5132 RH |
2222 | } |
2223 | ||
dc810e39 AM |
2224 | pos = o->output_section->line_filepos; |
2225 | pos += o->output_section->lineno_count * linesz; | |
2226 | amt = oeline - finfo->linenos; | |
2227 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2228 | || bfd_bwrite (finfo->linenos, amt, output_bfd) != amt) | |
b34976b6 | 2229 | return FALSE; |
252b5132 | 2230 | |
dc810e39 | 2231 | o->output_section->lineno_count += amt / linesz; |
252b5132 RH |
2232 | } |
2233 | } | |
2234 | ||
2235 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE | |
2236 | symbol will be the first symbol in the next input file. In the | |
2237 | normal case, this will save us from writing out the C_FILE symbol | |
2238 | again. */ | |
2239 | if (finfo->last_file_index != -1 | |
2240 | && (bfd_size_type) finfo->last_file_index >= syment_base) | |
2241 | { | |
2242 | finfo->last_file.n_value = output_index; | |
8b956130 NC |
2243 | bfd_coff_swap_sym_out (output_bfd, &finfo->last_file, |
2244 | (finfo->outsyms | |
2245 | + ((finfo->last_file_index - syment_base) | |
2246 | * osymesz))); | |
252b5132 RH |
2247 | } |
2248 | ||
2249 | /* Write the modified symbols to the output file. */ | |
2250 | if (outsym > finfo->outsyms) | |
2251 | { | |
dc810e39 AM |
2252 | file_ptr pos; |
2253 | bfd_size_type amt; | |
2254 | ||
2255 | pos = obj_sym_filepos (output_bfd) + syment_base * osymesz; | |
2256 | amt = outsym - finfo->outsyms; | |
2257 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2258 | || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt) | |
b34976b6 | 2259 | return FALSE; |
252b5132 RH |
2260 | |
2261 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) | |
2262 | + (outsym - finfo->outsyms) / osymesz) | |
2263 | == output_index); | |
2264 | ||
2265 | obj_raw_syment_count (output_bfd) = output_index; | |
2266 | } | |
2267 | ||
2268 | /* Relocate the contents of each section. */ | |
2269 | adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx; | |
2270 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
2271 | { | |
2272 | bfd_byte *contents; | |
2273 | struct coff_section_tdata *secdata; | |
2274 | ||
2275 | if (! o->linker_mark) | |
8b956130 NC |
2276 | /* This section was omitted from the link. */ |
2277 | continue; | |
252b5132 RH |
2278 | |
2279 | if ((o->flags & SEC_HAS_CONTENTS) == 0 | |
2280 | || (o->_raw_size == 0 && (o->flags & SEC_RELOC) == 0)) | |
2281 | { | |
2282 | if ((o->flags & SEC_RELOC) != 0 | |
2283 | && o->reloc_count != 0) | |
2284 | { | |
2285 | ((*_bfd_error_handler) | |
2286 | (_("%s: relocs in section `%s', but it has no contents"), | |
8f615d07 | 2287 | bfd_archive_filename (input_bfd), |
252b5132 RH |
2288 | bfd_get_section_name (input_bfd, o))); |
2289 | bfd_set_error (bfd_error_no_contents); | |
b34976b6 | 2290 | return FALSE; |
252b5132 RH |
2291 | } |
2292 | ||
2293 | continue; | |
2294 | } | |
2295 | ||
2296 | secdata = coff_section_data (input_bfd, o); | |
2297 | if (secdata != NULL && secdata->contents != NULL) | |
2298 | contents = secdata->contents; | |
2299 | else | |
2300 | { | |
2301 | if (! bfd_get_section_contents (input_bfd, o, finfo->contents, | |
2302 | (file_ptr) 0, o->_raw_size)) | |
b34976b6 | 2303 | return FALSE; |
252b5132 RH |
2304 | contents = finfo->contents; |
2305 | } | |
2306 | ||
2307 | if ((o->flags & SEC_RELOC) != 0) | |
2308 | { | |
2309 | int target_index; | |
2310 | struct internal_reloc *internal_relocs; | |
2311 | struct internal_reloc *irel; | |
2312 | ||
2313 | /* Read in the relocs. */ | |
2314 | target_index = o->output_section->target_index; | |
2315 | internal_relocs = (_bfd_coff_read_internal_relocs | |
b34976b6 | 2316 | (input_bfd, o, FALSE, finfo->external_relocs, |
1049f94e AM |
2317 | finfo->info->relocatable, |
2318 | (finfo->info->relocatable | |
252b5132 RH |
2319 | ? (finfo->section_info[target_index].relocs |
2320 | + o->output_section->reloc_count) | |
2321 | : finfo->internal_relocs))); | |
2322 | if (internal_relocs == NULL) | |
b34976b6 | 2323 | return FALSE; |
252b5132 RH |
2324 | |
2325 | /* Call processor specific code to relocate the section | |
2326 | contents. */ | |
2327 | if (! bfd_coff_relocate_section (output_bfd, finfo->info, | |
2328 | input_bfd, o, | |
2329 | contents, | |
2330 | internal_relocs, | |
2331 | finfo->internal_syms, | |
2332 | finfo->sec_ptrs)) | |
b34976b6 | 2333 | return FALSE; |
252b5132 | 2334 | |
1049f94e | 2335 | if (finfo->info->relocatable) |
252b5132 RH |
2336 | { |
2337 | bfd_vma offset; | |
2338 | struct internal_reloc *irelend; | |
2339 | struct coff_link_hash_entry **rel_hash; | |
2340 | ||
2341 | offset = o->output_section->vma + o->output_offset - o->vma; | |
2342 | irel = internal_relocs; | |
2343 | irelend = irel + o->reloc_count; | |
2344 | rel_hash = (finfo->section_info[target_index].rel_hashes | |
2345 | + o->output_section->reloc_count); | |
2346 | for (; irel < irelend; irel++, rel_hash++) | |
2347 | { | |
2348 | struct coff_link_hash_entry *h; | |
b34976b6 | 2349 | bfd_boolean adjusted; |
252b5132 RH |
2350 | |
2351 | *rel_hash = NULL; | |
2352 | ||
2353 | /* Adjust the reloc address and symbol index. */ | |
252b5132 RH |
2354 | irel->r_vaddr += offset; |
2355 | ||
2356 | if (irel->r_symndx == -1) | |
2357 | continue; | |
2358 | ||
2359 | if (adjust_symndx) | |
2360 | { | |
2361 | if (! (*adjust_symndx) (output_bfd, finfo->info, | |
2362 | input_bfd, o, irel, | |
2363 | &adjusted)) | |
b34976b6 | 2364 | return FALSE; |
252b5132 RH |
2365 | if (adjusted) |
2366 | continue; | |
2367 | } | |
2368 | ||
2369 | h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx]; | |
2370 | if (h != NULL) | |
2371 | { | |
2372 | /* This is a global symbol. */ | |
2373 | if (h->indx >= 0) | |
2374 | irel->r_symndx = h->indx; | |
2375 | else | |
2376 | { | |
2377 | /* This symbol is being written at the end | |
2378 | of the file, and we do not yet know the | |
2379 | symbol index. We save the pointer to the | |
2380 | hash table entry in the rel_hash list. | |
2381 | We set the indx field to -2 to indicate | |
2382 | that this symbol must not be stripped. */ | |
2383 | *rel_hash = h; | |
2384 | h->indx = -2; | |
2385 | } | |
2386 | } | |
2387 | else | |
2388 | { | |
2389 | long indx; | |
2390 | ||
2391 | indx = finfo->sym_indices[irel->r_symndx]; | |
2392 | if (indx != -1) | |
2393 | irel->r_symndx = indx; | |
2394 | else | |
2395 | { | |
2396 | struct internal_syment *is; | |
2397 | const char *name; | |
2398 | char buf[SYMNMLEN + 1]; | |
2399 | ||
2400 | /* This reloc is against a symbol we are | |
2401 | stripping. This should have been handled | |
2402 | by the 'dont_skip_symbol' code in the while | |
244148ad | 2403 | loop at the top of this function. */ |
252b5132 RH |
2404 | is = finfo->internal_syms + irel->r_symndx; |
2405 | ||
2406 | name = (_bfd_coff_internal_syment_name | |
2407 | (input_bfd, is, buf)); | |
2408 | if (name == NULL) | |
b34976b6 | 2409 | return FALSE; |
252b5132 RH |
2410 | |
2411 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2412 | (finfo->info, name, input_bfd, o, | |
2413 | irel->r_vaddr))) | |
b34976b6 | 2414 | return FALSE; |
252b5132 RH |
2415 | } |
2416 | } | |
2417 | } | |
2418 | ||
2419 | o->output_section->reloc_count += o->reloc_count; | |
2420 | } | |
2421 | } | |
2422 | ||
2423 | /* Write out the modified section contents. */ | |
2424 | if (secdata == NULL || secdata->stab_info == NULL) | |
2425 | { | |
dc810e39 AM |
2426 | file_ptr loc = o->output_offset * bfd_octets_per_byte (output_bfd); |
2427 | bfd_size_type amt = (o->_cooked_size != 0 | |
2428 | ? o->_cooked_size : o->_raw_size); | |
252b5132 | 2429 | if (! bfd_set_section_contents (output_bfd, o->output_section, |
dc810e39 | 2430 | contents, loc, amt)) |
b34976b6 | 2431 | return FALSE; |
252b5132 RH |
2432 | } |
2433 | else | |
2434 | { | |
2435 | if (! (_bfd_write_section_stabs | |
2436 | (output_bfd, &coff_hash_table (finfo->info)->stab_info, | |
2437 | o, &secdata->stab_info, contents))) | |
b34976b6 | 2438 | return FALSE; |
252b5132 RH |
2439 | } |
2440 | } | |
2441 | ||
8b956130 NC |
2442 | if (! finfo->info->keep_memory |
2443 | && ! _bfd_coff_free_symbols (input_bfd)) | |
2444 | return FALSE; | |
252b5132 | 2445 | |
b34976b6 | 2446 | return TRUE; |
252b5132 RH |
2447 | } |
2448 | ||
2449 | /* Write out a global symbol. Called via coff_link_hash_traverse. */ | |
2450 | ||
b34976b6 | 2451 | bfd_boolean |
8b956130 | 2452 | _bfd_coff_write_global_sym (struct coff_link_hash_entry *h, void *data) |
252b5132 RH |
2453 | { |
2454 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
2455 | bfd *output_bfd; | |
2456 | struct internal_syment isym; | |
2457 | bfd_size_type symesz; | |
2458 | unsigned int i; | |
dc810e39 | 2459 | file_ptr pos; |
252b5132 RH |
2460 | |
2461 | output_bfd = finfo->output_bfd; | |
2462 | ||
e92d460e AM |
2463 | if (h->root.type == bfd_link_hash_warning) |
2464 | { | |
2465 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2466 | if (h->root.type == bfd_link_hash_new) | |
b34976b6 | 2467 | return TRUE; |
e92d460e AM |
2468 | } |
2469 | ||
252b5132 | 2470 | if (h->indx >= 0) |
b34976b6 | 2471 | return TRUE; |
252b5132 RH |
2472 | |
2473 | if (h->indx != -2 | |
2474 | && (finfo->info->strip == strip_all | |
2475 | || (finfo->info->strip == strip_some | |
2476 | && (bfd_hash_lookup (finfo->info->keep_hash, | |
b34976b6 | 2477 | h->root.root.string, FALSE, FALSE) |
252b5132 | 2478 | == NULL)))) |
b34976b6 | 2479 | return TRUE; |
252b5132 RH |
2480 | |
2481 | switch (h->root.type) | |
2482 | { | |
2483 | default: | |
2484 | case bfd_link_hash_new: | |
e92d460e | 2485 | case bfd_link_hash_warning: |
252b5132 | 2486 | abort (); |
b34976b6 | 2487 | return FALSE; |
252b5132 RH |
2488 | |
2489 | case bfd_link_hash_undefined: | |
2490 | case bfd_link_hash_undefweak: | |
2491 | isym.n_scnum = N_UNDEF; | |
2492 | isym.n_value = 0; | |
2493 | break; | |
2494 | ||
2495 | case bfd_link_hash_defined: | |
2496 | case bfd_link_hash_defweak: | |
2497 | { | |
2498 | asection *sec; | |
2499 | ||
2500 | sec = h->root.u.def.section->output_section; | |
2501 | if (bfd_is_abs_section (sec)) | |
2502 | isym.n_scnum = N_ABS; | |
2503 | else | |
2504 | isym.n_scnum = sec->target_index; | |
2505 | isym.n_value = (h->root.u.def.value | |
2506 | + h->root.u.def.section->output_offset); | |
2507 | if (! obj_pe (finfo->output_bfd)) | |
2508 | isym.n_value += sec->vma; | |
2509 | } | |
2510 | break; | |
2511 | ||
2512 | case bfd_link_hash_common: | |
2513 | isym.n_scnum = N_UNDEF; | |
2514 | isym.n_value = h->root.u.c.size; | |
2515 | break; | |
2516 | ||
2517 | case bfd_link_hash_indirect: | |
252b5132 | 2518 | /* Just ignore these. They can't be handled anyhow. */ |
b34976b6 | 2519 | return TRUE; |
252b5132 RH |
2520 | } |
2521 | ||
2522 | if (strlen (h->root.root.string) <= SYMNMLEN) | |
2523 | strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); | |
2524 | else | |
2525 | { | |
b34976b6 | 2526 | bfd_boolean hash; |
252b5132 RH |
2527 | bfd_size_type indx; |
2528 | ||
b34976b6 | 2529 | hash = TRUE; |
252b5132 | 2530 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 2531 | hash = FALSE; |
252b5132 | 2532 | indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash, |
b34976b6 | 2533 | FALSE); |
252b5132 RH |
2534 | if (indx == (bfd_size_type) -1) |
2535 | { | |
b34976b6 AM |
2536 | finfo->failed = TRUE; |
2537 | return FALSE; | |
252b5132 RH |
2538 | } |
2539 | isym._n._n_n._n_zeroes = 0; | |
2540 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
2541 | } | |
2542 | ||
2543 | isym.n_sclass = h->class; | |
2544 | isym.n_type = h->type; | |
2545 | ||
2546 | if (isym.n_sclass == C_NULL) | |
2547 | isym.n_sclass = C_EXT; | |
2548 | ||
2549 | /* If doing task linking and this is the pass where we convert | |
2550 | defined globals to statics, then do that conversion now. If the | |
2551 | symbol is not being converted, just ignore it and it will be | |
e4202681 | 2552 | output during a later pass. */ |
252b5132 RH |
2553 | if (finfo->global_to_static) |
2554 | { | |
e4202681 | 2555 | if (! IS_EXTERNAL (output_bfd, isym)) |
b34976b6 | 2556 | return TRUE; |
e4202681 | 2557 | |
252b5132 RH |
2558 | isym.n_sclass = C_STAT; |
2559 | } | |
2560 | ||
e4202681 NC |
2561 | /* When a weak symbol is not overriden by a strong one, |
2562 | turn it into an external symbol when not building a | |
1049f94e | 2563 | shared or relocatable object. */ |
e4202681 | 2564 | if (! finfo->info->shared |
1049f94e | 2565 | && ! finfo->info->relocatable |
e4202681 NC |
2566 | && IS_WEAK_EXTERNAL (finfo->output_bfd, isym)) |
2567 | isym.n_sclass = C_EXT; | |
2568 | ||
252b5132 | 2569 | isym.n_numaux = h->numaux; |
244148ad | 2570 | |
8b956130 | 2571 | bfd_coff_swap_sym_out (output_bfd, &isym, finfo->outsyms); |
252b5132 RH |
2572 | |
2573 | symesz = bfd_coff_symesz (output_bfd); | |
2574 | ||
dc810e39 AM |
2575 | pos = obj_sym_filepos (output_bfd); |
2576 | pos += obj_raw_syment_count (output_bfd) * symesz; | |
2577 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
2578 | || bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz) | |
252b5132 | 2579 | { |
b34976b6 AM |
2580 | finfo->failed = TRUE; |
2581 | return FALSE; | |
252b5132 RH |
2582 | } |
2583 | ||
2584 | h->indx = obj_raw_syment_count (output_bfd); | |
2585 | ||
2586 | ++obj_raw_syment_count (output_bfd); | |
2587 | ||
2c546cd8 ILT |
2588 | /* Write out any associated aux entries. Most of the aux entries |
2589 | will have been modified in _bfd_coff_link_input_bfd. We have to | |
2590 | handle section aux entries here, now that we have the final | |
2591 | relocation and line number counts. */ | |
252b5132 RH |
2592 | for (i = 0; i < isym.n_numaux; i++) |
2593 | { | |
2c546cd8 ILT |
2594 | union internal_auxent *auxp; |
2595 | ||
2596 | auxp = h->aux + i; | |
2597 | ||
2598 | /* Look for a section aux entry here using the same tests that | |
2599 | coff_swap_aux_out uses. */ | |
2600 | if (i == 0 | |
2601 | && (isym.n_sclass == C_STAT | |
2602 | || isym.n_sclass == C_HIDDEN) | |
2603 | && isym.n_type == T_NULL | |
2604 | && (h->root.type == bfd_link_hash_defined | |
2605 | || h->root.type == bfd_link_hash_defweak)) | |
2606 | { | |
2607 | asection *sec; | |
2608 | ||
2609 | sec = h->root.u.def.section->output_section; | |
2610 | if (sec != NULL) | |
2611 | { | |
2612 | auxp->x_scn.x_scnlen = (sec->_cooked_size != 0 | |
2613 | ? sec->_cooked_size | |
2614 | : sec->_raw_size); | |
2615 | ||
2616 | /* For PE, an overflow on the final link reportedly does | |
2617 | not matter. FIXME: Why not? */ | |
2c546cd8 ILT |
2618 | if (sec->reloc_count > 0xffff |
2619 | && (! obj_pe (output_bfd) | |
1049f94e | 2620 | || finfo->info->relocatable)) |
2c546cd8 ILT |
2621 | (*_bfd_error_handler) |
2622 | (_("%s: %s: reloc overflow: 0x%lx > 0xffff"), | |
2623 | bfd_get_filename (output_bfd), | |
2624 | bfd_get_section_name (output_bfd, sec), | |
2625 | sec->reloc_count); | |
2626 | ||
2627 | if (sec->lineno_count > 0xffff | |
2628 | && (! obj_pe (output_bfd) | |
1049f94e | 2629 | || finfo->info->relocatable)) |
2c546cd8 ILT |
2630 | (*_bfd_error_handler) |
2631 | (_("%s: warning: %s: line number overflow: 0x%lx > 0xffff"), | |
2632 | bfd_get_filename (output_bfd), | |
2633 | bfd_get_section_name (output_bfd, sec), | |
2634 | sec->lineno_count); | |
2635 | ||
2636 | auxp->x_scn.x_nreloc = sec->reloc_count; | |
2637 | auxp->x_scn.x_nlinno = sec->lineno_count; | |
2638 | auxp->x_scn.x_checksum = 0; | |
2639 | auxp->x_scn.x_associated = 0; | |
2640 | auxp->x_scn.x_comdat = 0; | |
2641 | } | |
2642 | } | |
2643 | ||
8b956130 | 2644 | bfd_coff_swap_aux_out (output_bfd, auxp, isym.n_type, |
dc810e39 | 2645 | isym.n_sclass, (int) i, isym.n_numaux, |
8b956130 | 2646 | finfo->outsyms); |
dc810e39 | 2647 | if (bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz) |
252b5132 | 2648 | { |
b34976b6 AM |
2649 | finfo->failed = TRUE; |
2650 | return FALSE; | |
252b5132 RH |
2651 | } |
2652 | ++obj_raw_syment_count (output_bfd); | |
2653 | } | |
2654 | ||
b34976b6 | 2655 | return TRUE; |
252b5132 RH |
2656 | } |
2657 | ||
2658 | /* Write out task global symbols, converting them to statics. Called | |
2659 | via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do | |
244148ad | 2660 | the dirty work, if the symbol we are processing needs conversion. */ |
252b5132 | 2661 | |
b34976b6 | 2662 | bfd_boolean |
8b956130 | 2663 | _bfd_coff_write_task_globals (struct coff_link_hash_entry *h, void *data) |
252b5132 RH |
2664 | { |
2665 | struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; | |
b34976b6 AM |
2666 | bfd_boolean rtnval = TRUE; |
2667 | bfd_boolean save_global_to_static; | |
252b5132 | 2668 | |
e92d460e AM |
2669 | if (h->root.type == bfd_link_hash_warning) |
2670 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2671 | ||
252b5132 RH |
2672 | if (h->indx < 0) |
2673 | { | |
2674 | switch (h->root.type) | |
2675 | { | |
2676 | case bfd_link_hash_defined: | |
2677 | case bfd_link_hash_defweak: | |
2678 | save_global_to_static = finfo->global_to_static; | |
b34976b6 | 2679 | finfo->global_to_static = TRUE; |
252b5132 RH |
2680 | rtnval = _bfd_coff_write_global_sym (h, data); |
2681 | finfo->global_to_static = save_global_to_static; | |
2682 | break; | |
2683 | default: | |
2684 | break; | |
2685 | } | |
2686 | } | |
2687 | return (rtnval); | |
2688 | } | |
2689 | ||
2690 | /* Handle a link order which is supposed to generate a reloc. */ | |
2691 | ||
b34976b6 | 2692 | bfd_boolean |
8b956130 NC |
2693 | _bfd_coff_reloc_link_order (bfd *output_bfd, |
2694 | struct coff_final_link_info *finfo, | |
2695 | asection *output_section, | |
2696 | struct bfd_link_order *link_order) | |
252b5132 RH |
2697 | { |
2698 | reloc_howto_type *howto; | |
2699 | struct internal_reloc *irel; | |
2700 | struct coff_link_hash_entry **rel_hash_ptr; | |
2701 | ||
2702 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); | |
2703 | if (howto == NULL) | |
2704 | { | |
2705 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2706 | return FALSE; |
252b5132 RH |
2707 | } |
2708 | ||
2709 | if (link_order->u.reloc.p->addend != 0) | |
2710 | { | |
2711 | bfd_size_type size; | |
2712 | bfd_byte *buf; | |
2713 | bfd_reloc_status_type rstat; | |
b34976b6 | 2714 | bfd_boolean ok; |
dc810e39 | 2715 | file_ptr loc; |
252b5132 RH |
2716 | |
2717 | size = bfd_get_reloc_size (howto); | |
8b956130 | 2718 | buf = bfd_zmalloc (size); |
252b5132 | 2719 | if (buf == NULL) |
b34976b6 | 2720 | return FALSE; |
252b5132 RH |
2721 | |
2722 | rstat = _bfd_relocate_contents (howto, output_bfd, | |
dc810e39 AM |
2723 | (bfd_vma) link_order->u.reloc.p->addend,\ |
2724 | buf); | |
252b5132 RH |
2725 | switch (rstat) |
2726 | { | |
2727 | case bfd_reloc_ok: | |
2728 | break; | |
2729 | default: | |
2730 | case bfd_reloc_outofrange: | |
2731 | abort (); | |
2732 | case bfd_reloc_overflow: | |
2733 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
2734 | (finfo->info, | |
2735 | (link_order->type == bfd_section_reloc_link_order | |
2736 | ? bfd_section_name (output_bfd, | |
2737 | link_order->u.reloc.p->u.section) | |
2738 | : link_order->u.reloc.p->u.name), | |
2739 | howto->name, link_order->u.reloc.p->addend, | |
2740 | (bfd *) NULL, (asection *) NULL, (bfd_vma) 0))) | |
2741 | { | |
2742 | free (buf); | |
b34976b6 | 2743 | return FALSE; |
252b5132 RH |
2744 | } |
2745 | break; | |
2746 | } | |
dc810e39 | 2747 | loc = link_order->offset * bfd_octets_per_byte (output_bfd); |
8b956130 | 2748 | ok = bfd_set_section_contents (output_bfd, output_section, buf, |
dc810e39 | 2749 | loc, size); |
252b5132 RH |
2750 | free (buf); |
2751 | if (! ok) | |
b34976b6 | 2752 | return FALSE; |
252b5132 RH |
2753 | } |
2754 | ||
2755 | /* Store the reloc information in the right place. It will get | |
2756 | swapped and written out at the end of the final_link routine. */ | |
252b5132 RH |
2757 | irel = (finfo->section_info[output_section->target_index].relocs |
2758 | + output_section->reloc_count); | |
2759 | rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes | |
2760 | + output_section->reloc_count); | |
2761 | ||
2762 | memset (irel, 0, sizeof (struct internal_reloc)); | |
2763 | *rel_hash_ptr = NULL; | |
2764 | ||
2765 | irel->r_vaddr = output_section->vma + link_order->offset; | |
2766 | ||
2767 | if (link_order->type == bfd_section_reloc_link_order) | |
2768 | { | |
2769 | /* We need to somehow locate a symbol in the right section. The | |
2770 | symbol must either have a value of zero, or we must adjust | |
2771 | the addend by the value of the symbol. FIXME: Write this | |
2772 | when we need it. The old linker couldn't handle this anyhow. */ | |
2773 | abort (); | |
2774 | *rel_hash_ptr = NULL; | |
2775 | irel->r_symndx = 0; | |
2776 | } | |
2777 | else | |
2778 | { | |
2779 | struct coff_link_hash_entry *h; | |
2780 | ||
2781 | h = ((struct coff_link_hash_entry *) | |
2782 | bfd_wrapped_link_hash_lookup (output_bfd, finfo->info, | |
2783 | link_order->u.reloc.p->u.name, | |
b34976b6 | 2784 | FALSE, FALSE, TRUE)); |
252b5132 RH |
2785 | if (h != NULL) |
2786 | { | |
2787 | if (h->indx >= 0) | |
2788 | irel->r_symndx = h->indx; | |
2789 | else | |
2790 | { | |
2791 | /* Set the index to -2 to force this symbol to get | |
2792 | written out. */ | |
2793 | h->indx = -2; | |
2794 | *rel_hash_ptr = h; | |
2795 | irel->r_symndx = 0; | |
2796 | } | |
2797 | } | |
2798 | else | |
2799 | { | |
2800 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
2801 | (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL, | |
2802 | (asection *) NULL, (bfd_vma) 0))) | |
b34976b6 | 2803 | return FALSE; |
252b5132 RH |
2804 | irel->r_symndx = 0; |
2805 | } | |
2806 | } | |
2807 | ||
2808 | /* FIXME: Is this always right? */ | |
2809 | irel->r_type = howto->type; | |
2810 | ||
2811 | /* r_size is only used on the RS/6000, which needs its own linker | |
2812 | routines anyhow. r_extern is only used for ECOFF. */ | |
2813 | ||
2814 | /* FIXME: What is the right value for r_offset? Is zero OK? */ | |
252b5132 RH |
2815 | ++output_section->reloc_count; |
2816 | ||
b34976b6 | 2817 | return TRUE; |
252b5132 RH |
2818 | } |
2819 | ||
2820 | /* A basic reloc handling routine which may be used by processors with | |
2821 | simple relocs. */ | |
2822 | ||
b34976b6 | 2823 | bfd_boolean |
8b956130 NC |
2824 | _bfd_coff_generic_relocate_section (bfd *output_bfd, |
2825 | struct bfd_link_info *info, | |
2826 | bfd *input_bfd, | |
2827 | asection *input_section, | |
2828 | bfd_byte *contents, | |
2829 | struct internal_reloc *relocs, | |
2830 | struct internal_syment *syms, | |
2831 | asection **sections) | |
252b5132 RH |
2832 | { |
2833 | struct internal_reloc *rel; | |
2834 | struct internal_reloc *relend; | |
2835 | ||
2836 | rel = relocs; | |
2837 | relend = rel + input_section->reloc_count; | |
2838 | for (; rel < relend; rel++) | |
2839 | { | |
2840 | long symndx; | |
2841 | struct coff_link_hash_entry *h; | |
2842 | struct internal_syment *sym; | |
2843 | bfd_vma addend; | |
2844 | bfd_vma val; | |
2845 | reloc_howto_type *howto; | |
2846 | bfd_reloc_status_type rstat; | |
2847 | ||
2848 | symndx = rel->r_symndx; | |
2849 | ||
2850 | if (symndx == -1) | |
2851 | { | |
2852 | h = NULL; | |
2853 | sym = NULL; | |
2854 | } | |
75987f83 ILT |
2855 | else if (symndx < 0 |
2856 | || (unsigned long) symndx >= obj_raw_syment_count (input_bfd)) | |
2857 | { | |
2858 | (*_bfd_error_handler) | |
2859 | ("%s: illegal symbol index %ld in relocs", | |
8f615d07 | 2860 | bfd_archive_filename (input_bfd), symndx); |
b34976b6 | 2861 | return FALSE; |
75987f83 | 2862 | } |
252b5132 | 2863 | else |
244148ad | 2864 | { |
252b5132 RH |
2865 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
2866 | sym = syms + symndx; | |
2867 | } | |
2868 | ||
2869 | /* COFF treats common symbols in one of two ways. Either the | |
2870 | size of the symbol is included in the section contents, or it | |
2871 | is not. We assume that the size is not included, and force | |
2872 | the rtype_to_howto function to adjust the addend as needed. */ | |
252b5132 RH |
2873 | if (sym != NULL && sym->n_scnum != 0) |
2874 | addend = - sym->n_value; | |
2875 | else | |
2876 | addend = 0; | |
2877 | ||
252b5132 RH |
2878 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
2879 | sym, &addend); | |
2880 | if (howto == NULL) | |
b34976b6 | 2881 | return FALSE; |
252b5132 | 2882 | |
1049f94e | 2883 | /* If we are doing a relocatable link, then we can just ignore |
252b5132 | 2884 | a PC relative reloc that is pcrel_offset. It will already |
1049f94e | 2885 | have the correct value. If this is not a relocatable link, |
252b5132 RH |
2886 | then we should ignore the symbol value. */ |
2887 | if (howto->pc_relative && howto->pcrel_offset) | |
2888 | { | |
1049f94e | 2889 | if (info->relocatable) |
252b5132 RH |
2890 | continue; |
2891 | if (sym != NULL && sym->n_scnum != 0) | |
2892 | addend += sym->n_value; | |
2893 | } | |
2894 | ||
2895 | val = 0; | |
2896 | ||
2897 | if (h == NULL) | |
2898 | { | |
2899 | asection *sec; | |
2900 | ||
2901 | if (symndx == -1) | |
2902 | { | |
2903 | sec = bfd_abs_section_ptr; | |
2904 | val = 0; | |
2905 | } | |
2906 | else | |
2907 | { | |
2908 | sec = sections[symndx]; | |
2909 | val = (sec->output_section->vma | |
2910 | + sec->output_offset | |
2911 | + sym->n_value); | |
2912 | if (! obj_pe (input_bfd)) | |
2913 | val -= sec->vma; | |
2914 | } | |
2915 | } | |
2916 | else | |
2917 | { | |
2918 | if (h->root.type == bfd_link_hash_defined | |
2919 | || h->root.type == bfd_link_hash_defweak) | |
2920 | { | |
2921 | asection *sec; | |
2922 | ||
2923 | sec = h->root.u.def.section; | |
2924 | val = (h->root.u.def.value | |
2925 | + sec->output_section->vma | |
2926 | + sec->output_offset); | |
2927 | } | |
2928 | ||
bc7a577d PB |
2929 | else if (h->root.type == bfd_link_hash_undefweak) |
2930 | val = 0; | |
2931 | ||
1049f94e | 2932 | else if (! info->relocatable) |
252b5132 RH |
2933 | { |
2934 | if (! ((*info->callbacks->undefined_symbol) | |
2935 | (info, h->root.root.string, input_bfd, input_section, | |
b34976b6 AM |
2936 | rel->r_vaddr - input_section->vma, TRUE))) |
2937 | return FALSE; | |
252b5132 RH |
2938 | } |
2939 | } | |
2940 | ||
2941 | if (info->base_file) | |
2942 | { | |
244148ad | 2943 | /* Emit a reloc if the backend thinks it needs it. */ |
252b5132 RH |
2944 | if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto)) |
2945 | { | |
2946 | /* Relocation to a symbol in a section which isn't | |
2947 | absolute. We output the address here to a file. | |
2948 | This file is then read by dlltool when generating the | |
2949 | reloc section. Note that the base file is not | |
2950 | portable between systems. We write out a long here, | |
2951 | and dlltool reads in a long. */ | |
244148ad KH |
2952 | long addr = (rel->r_vaddr |
2953 | - input_section->vma | |
2954 | + input_section->output_offset | |
252b5132 RH |
2955 | + input_section->output_section->vma); |
2956 | if (coff_data (output_bfd)->pe) | |
2957 | addr -= pe_data(output_bfd)->pe_opthdr.ImageBase; | |
2958 | if (fwrite (&addr, 1, sizeof (long), (FILE *) info->base_file) | |
2959 | != sizeof (long)) | |
2960 | { | |
2961 | bfd_set_error (bfd_error_system_call); | |
b34976b6 | 2962 | return FALSE; |
252b5132 RH |
2963 | } |
2964 | } | |
2965 | } | |
244148ad | 2966 | |
252b5132 RH |
2967 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
2968 | contents, | |
2969 | rel->r_vaddr - input_section->vma, | |
2970 | val, addend); | |
2971 | ||
2972 | switch (rstat) | |
2973 | { | |
2974 | default: | |
2975 | abort (); | |
2976 | case bfd_reloc_ok: | |
2977 | break; | |
2978 | case bfd_reloc_outofrange: | |
2979 | (*_bfd_error_handler) | |
2980 | (_("%s: bad reloc address 0x%lx in section `%s'"), | |
8f615d07 | 2981 | bfd_archive_filename (input_bfd), |
252b5132 RH |
2982 | (unsigned long) rel->r_vaddr, |
2983 | bfd_get_section_name (input_bfd, input_section)); | |
b34976b6 | 2984 | return FALSE; |
252b5132 RH |
2985 | case bfd_reloc_overflow: |
2986 | { | |
2987 | const char *name; | |
2988 | char buf[SYMNMLEN + 1]; | |
2989 | ||
2990 | if (symndx == -1) | |
2991 | name = "*ABS*"; | |
2992 | else if (h != NULL) | |
2993 | name = h->root.root.string; | |
2994 | else | |
2995 | { | |
2996 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
2997 | if (name == NULL) | |
b34976b6 | 2998 | return FALSE; |
252b5132 RH |
2999 | } |
3000 | ||
3001 | if (! ((*info->callbacks->reloc_overflow) | |
3002 | (info, name, howto->name, (bfd_vma) 0, input_bfd, | |
3003 | input_section, rel->r_vaddr - input_section->vma))) | |
b34976b6 | 3004 | return FALSE; |
252b5132 RH |
3005 | } |
3006 | } | |
3007 | } | |
b34976b6 | 3008 | return TRUE; |
252b5132 | 3009 | } |