Commit | Line | Data |
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252b5132 | 1 | /* ldcref.c -- output a cross reference table |
66eb6687 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006 |
1579bae1 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Written by Ian Lance Taylor <ian@cygnus.com> |
5 | ||
6 | This file is part of GLD, the Gnu Linker. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
75be928b | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
21 | |
22 | /* This file holds routines that manage the cross reference table. | |
23 | The table is used to generate cross reference reports. It is also | |
24 | used to implement the NOCROSSREFS command in the linker script. */ | |
25 | ||
26 | #include "bfd.h" | |
27 | #include "sysdep.h" | |
28 | #include "bfdlink.h" | |
29 | #include "libiberty.h" | |
30 | ||
31 | #include "ld.h" | |
32 | #include "ldmain.h" | |
33 | #include "ldmisc.h" | |
34 | #include "ldexp.h" | |
35 | #include "ldlang.h" | |
36 | ||
37 | /* We keep an instance of this structure for each reference to a | |
38 | symbol from a given object. */ | |
39 | ||
89cdebba | 40 | struct cref_ref { |
252b5132 RH |
41 | /* The next reference. */ |
42 | struct cref_ref *next; | |
43 | /* The object. */ | |
44 | bfd *abfd; | |
45 | /* True if the symbol is defined. */ | |
46 | unsigned int def : 1; | |
47 | /* True if the symbol is common. */ | |
48 | unsigned int common : 1; | |
49 | /* True if the symbol is undefined. */ | |
50 | unsigned int undef : 1; | |
51 | }; | |
52 | ||
53 | /* We keep a hash table of symbols. Each entry looks like this. */ | |
54 | ||
89cdebba | 55 | struct cref_hash_entry { |
252b5132 RH |
56 | struct bfd_hash_entry root; |
57 | /* The demangled name. */ | |
58 | char *demangled; | |
59 | /* References to and definitions of this symbol. */ | |
60 | struct cref_ref *refs; | |
61 | }; | |
62 | ||
63 | /* This is what the hash table looks like. */ | |
64 | ||
89cdebba | 65 | struct cref_hash_table { |
252b5132 RH |
66 | struct bfd_hash_table root; |
67 | }; | |
68 | ||
1579bae1 | 69 | /* Forward declarations. */ |
252b5132 | 70 | |
1579bae1 | 71 | static void output_one_cref (FILE *, struct cref_hash_entry *); |
09c112da | 72 | static void check_local_sym_xref (lang_input_statement_type *); |
1579bae1 | 73 | static bfd_boolean check_nocrossref (struct cref_hash_entry *, void *); |
f0e0fb23 | 74 | static void check_refs (const char *, bfd_boolean, asection *, bfd *, |
1579bae1 AM |
75 | struct lang_nocrossrefs *); |
76 | static void check_reloc_refs (bfd *, asection *, void *); | |
252b5132 RH |
77 | |
78 | /* Look up an entry in the cref hash table. */ | |
79 | ||
80 | #define cref_hash_lookup(table, string, create, copy) \ | |
81 | ((struct cref_hash_entry *) \ | |
82 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
83 | ||
84 | /* Traverse the cref hash table. */ | |
85 | ||
86 | #define cref_hash_traverse(table, func, info) \ | |
87 | (bfd_hash_traverse \ | |
88 | (&(table)->root, \ | |
1579bae1 | 89 | (bfd_boolean (*) (struct bfd_hash_entry *, void *)) (func), \ |
252b5132 RH |
90 | (info))) |
91 | ||
92 | /* The cref hash table. */ | |
93 | ||
94 | static struct cref_hash_table cref_table; | |
95 | ||
96 | /* Whether the cref hash table has been initialized. */ | |
97 | ||
b34976b6 | 98 | static bfd_boolean cref_initialized; |
252b5132 RH |
99 | |
100 | /* The number of symbols seen so far. */ | |
101 | ||
102 | static size_t cref_symcount; | |
103 | ||
104 | /* Create an entry in a cref hash table. */ | |
105 | ||
106 | static struct bfd_hash_entry * | |
1579bae1 AM |
107 | cref_hash_newfunc (struct bfd_hash_entry *entry, |
108 | struct bfd_hash_table *table, | |
109 | const char *string) | |
252b5132 RH |
110 | { |
111 | struct cref_hash_entry *ret = (struct cref_hash_entry *) entry; | |
112 | ||
113 | /* Allocate the structure if it has not already been allocated by a | |
114 | subclass. */ | |
115 | if (ret == NULL) | |
116 | ret = ((struct cref_hash_entry *) | |
117 | bfd_hash_allocate (table, sizeof (struct cref_hash_entry))); | |
118 | if (ret == NULL) | |
1579bae1 | 119 | return NULL; |
252b5132 RH |
120 | |
121 | /* Call the allocation method of the superclass. */ | |
122 | ret = ((struct cref_hash_entry *) | |
123 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
124 | if (ret != NULL) | |
125 | { | |
126 | /* Set local fields. */ | |
127 | ret->demangled = NULL; | |
128 | ret->refs = NULL; | |
129 | ||
130 | /* Keep a count of the number of entries created in the hash | |
1579bae1 | 131 | table. */ |
252b5132 RH |
132 | ++cref_symcount; |
133 | } | |
134 | ||
1579bae1 | 135 | return &ret->root; |
252b5132 RH |
136 | } |
137 | ||
138 | /* Add a symbol to the cref hash table. This is called for every | |
09c112da | 139 | global symbol that is seen during the link. */ |
252b5132 | 140 | |
252b5132 | 141 | void |
1579bae1 AM |
142 | add_cref (const char *name, |
143 | bfd *abfd, | |
144 | asection *section, | |
145 | bfd_vma value ATTRIBUTE_UNUSED) | |
252b5132 RH |
146 | { |
147 | struct cref_hash_entry *h; | |
148 | struct cref_ref *r; | |
149 | ||
150 | if (! cref_initialized) | |
151 | { | |
66eb6687 AM |
152 | if (!bfd_hash_table_init (&cref_table.root, cref_hash_newfunc, |
153 | sizeof (struct cref_hash_entry))) | |
252b5132 | 154 | einfo (_("%X%P: bfd_hash_table_init of cref table failed: %E\n")); |
b34976b6 | 155 | cref_initialized = TRUE; |
252b5132 RH |
156 | } |
157 | ||
b34976b6 | 158 | h = cref_hash_lookup (&cref_table, name, TRUE, FALSE); |
252b5132 RH |
159 | if (h == NULL) |
160 | einfo (_("%X%P: cref_hash_lookup failed: %E\n")); | |
161 | ||
162 | for (r = h->refs; r != NULL; r = r->next) | |
163 | if (r->abfd == abfd) | |
164 | break; | |
165 | ||
166 | if (r == NULL) | |
167 | { | |
1579bae1 | 168 | r = xmalloc (sizeof *r); |
252b5132 RH |
169 | r->next = h->refs; |
170 | h->refs = r; | |
171 | r->abfd = abfd; | |
b34976b6 AM |
172 | r->def = FALSE; |
173 | r->common = FALSE; | |
174 | r->undef = FALSE; | |
252b5132 RH |
175 | } |
176 | ||
177 | if (bfd_is_und_section (section)) | |
b34976b6 | 178 | r->undef = TRUE; |
252b5132 | 179 | else if (bfd_is_com_section (section)) |
b34976b6 | 180 | r->common = TRUE; |
252b5132 | 181 | else |
b34976b6 | 182 | r->def = TRUE; |
252b5132 RH |
183 | } |
184 | ||
185 | /* Copy the addresses of the hash table entries into an array. This | |
186 | is called via cref_hash_traverse. We also fill in the demangled | |
187 | name. */ | |
188 | ||
b34976b6 | 189 | static bfd_boolean |
1579bae1 | 190 | cref_fill_array (struct cref_hash_entry *h, void *data) |
252b5132 | 191 | { |
1579bae1 | 192 | struct cref_hash_entry ***pph = data; |
252b5132 RH |
193 | |
194 | ASSERT (h->demangled == NULL); | |
195 | h->demangled = demangle (h->root.string); | |
196 | ||
197 | **pph = h; | |
198 | ||
199 | ++*pph; | |
200 | ||
b34976b6 | 201 | return TRUE; |
252b5132 RH |
202 | } |
203 | ||
204 | /* Sort an array of cref hash table entries by name. */ | |
205 | ||
206 | static int | |
1579bae1 | 207 | cref_sort_array (const void *a1, const void *a2) |
252b5132 | 208 | { |
1579bae1 AM |
209 | const struct cref_hash_entry * const *p1 = a1; |
210 | const struct cref_hash_entry * const *p2 = a2; | |
252b5132 RH |
211 | |
212 | return strcmp ((*p1)->demangled, (*p2)->demangled); | |
213 | } | |
214 | ||
215 | /* Write out the cref table. */ | |
216 | ||
217 | #define FILECOL (50) | |
218 | ||
219 | void | |
1579bae1 | 220 | output_cref (FILE *fp) |
252b5132 RH |
221 | { |
222 | int len; | |
223 | struct cref_hash_entry **csyms, **csym_fill, **csym, **csym_end; | |
224 | const char *msg; | |
225 | ||
226 | fprintf (fp, _("\nCross Reference Table\n\n")); | |
227 | msg = _("Symbol"); | |
305c7206 | 228 | fprintf (fp, "%s", msg); |
252b5132 RH |
229 | len = strlen (msg); |
230 | while (len < FILECOL) | |
231 | { | |
4de2d33d | 232 | putc (' ', fp); |
252b5132 RH |
233 | ++len; |
234 | } | |
235 | fprintf (fp, _("File\n")); | |
236 | ||
237 | if (! cref_initialized) | |
238 | { | |
239 | fprintf (fp, _("No symbols\n")); | |
240 | return; | |
241 | } | |
242 | ||
1579bae1 | 243 | csyms = xmalloc (cref_symcount * sizeof (*csyms)); |
252b5132 RH |
244 | |
245 | csym_fill = csyms; | |
246 | cref_hash_traverse (&cref_table, cref_fill_array, &csym_fill); | |
247 | ASSERT ((size_t) (csym_fill - csyms) == cref_symcount); | |
248 | ||
249 | qsort (csyms, cref_symcount, sizeof (*csyms), cref_sort_array); | |
250 | ||
251 | csym_end = csyms + cref_symcount; | |
252 | for (csym = csyms; csym < csym_end; csym++) | |
253 | output_one_cref (fp, *csym); | |
254 | } | |
255 | ||
256 | /* Output one entry in the cross reference table. */ | |
257 | ||
258 | static void | |
1579bae1 | 259 | output_one_cref (FILE *fp, struct cref_hash_entry *h) |
252b5132 RH |
260 | { |
261 | int len; | |
262 | struct bfd_link_hash_entry *hl; | |
263 | struct cref_ref *r; | |
264 | ||
b34976b6 AM |
265 | hl = bfd_link_hash_lookup (link_info.hash, h->root.string, FALSE, |
266 | FALSE, TRUE); | |
252b5132 RH |
267 | if (hl == NULL) |
268 | einfo ("%P: symbol `%T' missing from main hash table\n", | |
269 | h->root.string); | |
270 | else | |
271 | { | |
272 | /* If this symbol is defined in a dynamic object but never | |
273 | referenced by a normal object, then don't print it. */ | |
274 | if (hl->type == bfd_link_hash_defined) | |
275 | { | |
276 | if (hl->u.def.section->output_section == NULL) | |
277 | return; | |
278 | if (hl->u.def.section->owner != NULL | |
279 | && (hl->u.def.section->owner->flags & DYNAMIC) != 0) | |
280 | { | |
281 | for (r = h->refs; r != NULL; r = r->next) | |
282 | if ((r->abfd->flags & DYNAMIC) == 0) | |
283 | break; | |
284 | if (r == NULL) | |
285 | return; | |
286 | } | |
287 | } | |
288 | } | |
289 | ||
290 | fprintf (fp, "%s ", h->demangled); | |
291 | len = strlen (h->demangled) + 1; | |
292 | ||
293 | for (r = h->refs; r != NULL; r = r->next) | |
294 | { | |
295 | if (r->def) | |
296 | { | |
297 | while (len < FILECOL) | |
298 | { | |
299 | putc (' ', fp); | |
300 | ++len; | |
301 | } | |
302 | lfinfo (fp, "%B\n", r->abfd); | |
303 | len = 0; | |
304 | } | |
305 | } | |
306 | ||
307 | for (r = h->refs; r != NULL; r = r->next) | |
308 | { | |
309 | if (! r->def) | |
310 | { | |
311 | while (len < FILECOL) | |
312 | { | |
313 | putc (' ', fp); | |
314 | ++len; | |
315 | } | |
316 | lfinfo (fp, "%B\n", r->abfd); | |
317 | len = 0; | |
318 | } | |
319 | } | |
320 | ||
321 | ASSERT (len == 0); | |
322 | } | |
323 | ||
324 | /* Check for prohibited cross references. */ | |
325 | ||
326 | void | |
1579bae1 | 327 | check_nocrossrefs (void) |
252b5132 RH |
328 | { |
329 | if (! cref_initialized) | |
330 | return; | |
331 | ||
1579bae1 | 332 | cref_hash_traverse (&cref_table, check_nocrossref, NULL); |
e14ec88b | 333 | |
09c112da | 334 | lang_for_each_file (check_local_sym_xref); |
e14ec88b AM |
335 | } |
336 | ||
09c112da | 337 | /* Check for prohibited cross references to local and section symbols. */ |
e14ec88b AM |
338 | |
339 | static void | |
09c112da | 340 | check_local_sym_xref (lang_input_statement_type *statement) |
e14ec88b AM |
341 | { |
342 | bfd *abfd; | |
09c112da AM |
343 | lang_input_statement_type *li; |
344 | asymbol **asymbols, **syms; | |
e14ec88b AM |
345 | |
346 | abfd = statement->the_bfd; | |
347 | if (abfd == NULL) | |
348 | return; | |
349 | ||
09c112da AM |
350 | li = abfd->usrdata; |
351 | if (li != NULL && li->asymbols != NULL) | |
352 | asymbols = li->asymbols; | |
353 | else | |
e14ec88b | 354 | { |
09c112da AM |
355 | long symsize; |
356 | long symbol_count; | |
357 | ||
358 | symsize = bfd_get_symtab_upper_bound (abfd); | |
359 | if (symsize < 0) | |
360 | einfo (_("%B%F: could not read symbols; %E\n"), abfd); | |
361 | asymbols = xmalloc (symsize); | |
362 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); | |
363 | if (symbol_count < 0) | |
364 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
365 | if (li != NULL) | |
366 | { | |
367 | li->asymbols = asymbols; | |
368 | li->symbol_count = symbol_count; | |
369 | } | |
370 | } | |
e14ec88b | 371 | |
09c112da AM |
372 | for (syms = asymbols; *syms; ++syms) |
373 | { | |
374 | asymbol *sym = *syms; | |
375 | if (sym->flags & (BSF_GLOBAL | BSF_WARNING | BSF_INDIRECT | BSF_FILE)) | |
376 | continue; | |
377 | if ((sym->flags & (BSF_LOCAL | BSF_SECTION_SYM)) != 0 | |
378 | && sym->section->output_section != NULL) | |
e14ec88b | 379 | { |
09c112da | 380 | const char *outsecname, *symname; |
e14ec88b AM |
381 | struct lang_nocrossrefs *ncrs; |
382 | struct lang_nocrossref *ncr; | |
383 | ||
09c112da AM |
384 | outsecname = sym->section->output_section->name; |
385 | symname = NULL; | |
386 | if ((sym->flags & BSF_SECTION_SYM) == 0) | |
387 | symname = sym->name; | |
e14ec88b AM |
388 | for (ncrs = nocrossref_list; ncrs != NULL; ncrs = ncrs->next) |
389 | for (ncr = ncrs->list; ncr != NULL; ncr = ncr->next) | |
390 | if (strcmp (ncr->name, outsecname) == 0) | |
f0e0fb23 | 391 | check_refs (symname, FALSE, sym->section, abfd, ncrs); |
e14ec88b AM |
392 | } |
393 | } | |
09c112da AM |
394 | |
395 | if (li == NULL) | |
396 | free (asymbols); | |
252b5132 RH |
397 | } |
398 | ||
399 | /* Check one symbol to see if it is a prohibited cross reference. */ | |
400 | ||
b34976b6 | 401 | static bfd_boolean |
1579bae1 | 402 | check_nocrossref (struct cref_hash_entry *h, void *ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
403 | { |
404 | struct bfd_link_hash_entry *hl; | |
405 | asection *defsec; | |
406 | const char *defsecname; | |
407 | struct lang_nocrossrefs *ncrs; | |
408 | struct lang_nocrossref *ncr; | |
e14ec88b | 409 | struct cref_ref *ref; |
252b5132 | 410 | |
b34976b6 AM |
411 | hl = bfd_link_hash_lookup (link_info.hash, h->root.string, FALSE, |
412 | FALSE, TRUE); | |
252b5132 RH |
413 | if (hl == NULL) |
414 | { | |
415 | einfo (_("%P: symbol `%T' missing from main hash table\n"), | |
416 | h->root.string); | |
b34976b6 | 417 | return TRUE; |
252b5132 RH |
418 | } |
419 | ||
420 | if (hl->type != bfd_link_hash_defined | |
421 | && hl->type != bfd_link_hash_defweak) | |
b34976b6 | 422 | return TRUE; |
252b5132 RH |
423 | |
424 | defsec = hl->u.def.section->output_section; | |
425 | if (defsec == NULL) | |
b34976b6 | 426 | return TRUE; |
252b5132 RH |
427 | defsecname = bfd_get_section_name (defsec->owner, defsec); |
428 | ||
429 | for (ncrs = nocrossref_list; ncrs != NULL; ncrs = ncrs->next) | |
430 | for (ncr = ncrs->list; ncr != NULL; ncr = ncr->next) | |
431 | if (strcmp (ncr->name, defsecname) == 0) | |
e14ec88b | 432 | for (ref = h->refs; ref != NULL; ref = ref->next) |
f0e0fb23 L |
433 | check_refs (hl->root.string, TRUE, hl->u.def.section, |
434 | ref->abfd, ncrs); | |
252b5132 | 435 | |
b34976b6 | 436 | return TRUE; |
252b5132 RH |
437 | } |
438 | ||
439 | /* The struct is used to pass information from check_refs to | |
440 | check_reloc_refs through bfd_map_over_sections. */ | |
441 | ||
89cdebba | 442 | struct check_refs_info { |
e14ec88b | 443 | const char *sym_name; |
252b5132 RH |
444 | asection *defsec; |
445 | struct lang_nocrossrefs *ncrs; | |
446 | asymbol **asymbols; | |
f0e0fb23 | 447 | bfd_boolean global; |
252b5132 RH |
448 | }; |
449 | ||
450 | /* This function is called for each symbol defined in a section which | |
451 | prohibits cross references. We need to look through all references | |
452 | to this symbol, and ensure that the references are not from | |
453 | prohibited sections. */ | |
454 | ||
455 | static void | |
1579bae1 | 456 | check_refs (const char *name, |
f0e0fb23 | 457 | bfd_boolean global, |
1579bae1 AM |
458 | asection *sec, |
459 | bfd *abfd, | |
460 | struct lang_nocrossrefs *ncrs) | |
252b5132 | 461 | { |
e14ec88b AM |
462 | lang_input_statement_type *li; |
463 | asymbol **asymbols; | |
464 | struct check_refs_info info; | |
252b5132 | 465 | |
e14ec88b AM |
466 | /* We need to look through the relocations for this BFD, to see |
467 | if any of the relocations which refer to this symbol are from | |
468 | a prohibited section. Note that we need to do this even for | |
469 | the BFD in which the symbol is defined, since even a single | |
470 | BFD might contain a prohibited cross reference. */ | |
471 | ||
1579bae1 | 472 | li = abfd->usrdata; |
e14ec88b AM |
473 | if (li != NULL && li->asymbols != NULL) |
474 | asymbols = li->asymbols; | |
475 | else | |
252b5132 | 476 | { |
e14ec88b AM |
477 | long symsize; |
478 | long symbol_count; | |
479 | ||
480 | symsize = bfd_get_symtab_upper_bound (abfd); | |
481 | if (symsize < 0) | |
482 | einfo (_("%B%F: could not read symbols; %E\n"), abfd); | |
1579bae1 | 483 | asymbols = xmalloc (symsize); |
e14ec88b AM |
484 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
485 | if (symbol_count < 0) | |
486 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
487 | if (li != NULL) | |
252b5132 | 488 | { |
e14ec88b AM |
489 | li->asymbols = asymbols; |
490 | li->symbol_count = symbol_count; | |
252b5132 | 491 | } |
252b5132 | 492 | } |
e14ec88b AM |
493 | |
494 | info.sym_name = name; | |
f0e0fb23 | 495 | info.global = global; |
e14ec88b AM |
496 | info.defsec = sec; |
497 | info.ncrs = ncrs; | |
498 | info.asymbols = asymbols; | |
1579bae1 | 499 | bfd_map_over_sections (abfd, check_reloc_refs, &info); |
e14ec88b AM |
500 | |
501 | if (li == NULL) | |
502 | free (asymbols); | |
252b5132 RH |
503 | } |
504 | ||
e14ec88b | 505 | /* This is called via bfd_map_over_sections. INFO->SYM_NAME is a symbol |
252b5132 RH |
506 | defined in INFO->DEFSECNAME. If this section maps into any of the |
507 | sections listed in INFO->NCRS, other than INFO->DEFSECNAME, then we | |
508 | look through the relocations. If any of the relocations are to | |
e14ec88b | 509 | INFO->SYM_NAME, then we report a prohibited cross reference error. */ |
252b5132 RH |
510 | |
511 | static void | |
1579bae1 | 512 | check_reloc_refs (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 513 | { |
1579bae1 | 514 | struct check_refs_info *info = iarg; |
252b5132 RH |
515 | asection *outsec; |
516 | const char *outsecname; | |
517 | asection *outdefsec; | |
518 | const char *outdefsecname; | |
519 | struct lang_nocrossref *ncr; | |
520 | const char *symname; | |
f0e0fb23 | 521 | bfd_boolean global; |
252b5132 RH |
522 | long relsize; |
523 | arelent **relpp; | |
524 | long relcount; | |
525 | arelent **p, **pend; | |
526 | ||
527 | outsec = sec->output_section; | |
528 | outsecname = bfd_get_section_name (outsec->owner, outsec); | |
529 | ||
530 | outdefsec = info->defsec->output_section; | |
531 | outdefsecname = bfd_get_section_name (outdefsec->owner, outdefsec); | |
532 | ||
533 | /* The section where the symbol is defined is permitted. */ | |
534 | if (strcmp (outsecname, outdefsecname) == 0) | |
535 | return; | |
536 | ||
537 | for (ncr = info->ncrs->list; ncr != NULL; ncr = ncr->next) | |
538 | if (strcmp (outsecname, ncr->name) == 0) | |
539 | break; | |
540 | ||
541 | if (ncr == NULL) | |
542 | return; | |
543 | ||
544 | /* This section is one for which cross references are prohibited. | |
545 | Look through the relocations, and see if any of them are to | |
e14ec88b | 546 | INFO->SYM_NAME. If INFO->SYMNAME is NULL, check for relocations |
f0e0fb23 L |
547 | against the section symbol. If INFO->GLOBAL is TRUE, the |
548 | definition is global, check for relocations against the global | |
549 | symbols. Otherwise check for relocations against the local and | |
550 | section symbols. */ | |
252b5132 | 551 | |
e14ec88b | 552 | symname = info->sym_name; |
f0e0fb23 | 553 | global = info->global; |
252b5132 RH |
554 | |
555 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
556 | if (relsize < 0) | |
557 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
558 | if (relsize == 0) | |
559 | return; | |
560 | ||
1579bae1 | 561 | relpp = xmalloc (relsize); |
252b5132 RH |
562 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
563 | if (relcount < 0) | |
564 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
565 | ||
566 | p = relpp; | |
567 | pend = p + relcount; | |
568 | for (; p < pend && *p != NULL; p++) | |
569 | { | |
570 | arelent *q = *p; | |
571 | ||
572 | if (q->sym_ptr_ptr != NULL | |
573 | && *q->sym_ptr_ptr != NULL | |
f0e0fb23 L |
574 | && ((global |
575 | && (bfd_is_und_section (bfd_get_section (*q->sym_ptr_ptr)) | |
576 | || bfd_is_com_section (bfd_get_section (*q->sym_ptr_ptr)) | |
577 | || ((*q->sym_ptr_ptr)->flags & (BSF_GLOBAL | |
578 | | BSF_WEAK)) != 0)) | |
579 | || (!global | |
580 | && ((*q->sym_ptr_ptr)->flags & (BSF_LOCAL | |
581 | | BSF_SECTION_SYM)) != 0)) | |
e14ec88b AM |
582 | && (symname != NULL |
583 | ? strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), symname) == 0 | |
584 | : (((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 | |
585 | && bfd_get_section (*q->sym_ptr_ptr) == info->defsec))) | |
252b5132 RH |
586 | { |
587 | /* We found a reloc for the symbol. The symbol is defined | |
1579bae1 AM |
588 | in OUTSECNAME. This reloc is from a section which is |
589 | mapped into a section from which references to OUTSECNAME | |
590 | are prohibited. We must report an error. */ | |
252b5132 RH |
591 | einfo (_("%X%C: prohibited cross reference from %s to `%T' in %s\n"), |
592 | abfd, sec, q->address, outsecname, | |
593 | bfd_asymbol_name (*q->sym_ptr_ptr), outdefsecname); | |
594 | } | |
595 | } | |
596 | ||
597 | free (relpp); | |
598 | } |