Commit | Line | Data |
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252b5132 | 1 | /* POWER/PowerPC XCOFF linker support. |
b3adc24a | 2 | Copyright (C) 1995-2020 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support. |
4 | ||
eb1e0e80 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
eb1e0e80 NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
eb1e0e80 | 10 | (at your option) any later version. |
252b5132 | 11 | |
eb1e0e80 NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
eb1e0e80 NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
252b5132 RH |
24 | #include "bfdlink.h" |
25 | #include "libbfd.h" | |
26 | #include "coff/internal.h" | |
beb1bf64 | 27 | #include "coff/xcoff.h" |
252b5132 | 28 | #include "libcoff.h" |
beb1bf64 | 29 | #include "libxcoff.h" |
24c611d1 | 30 | #include "libiberty.h" |
6ea7de32 | 31 | #include "xcofflink.h" |
252b5132 RH |
32 | |
33 | /* This file holds the XCOFF linker code. */ | |
34 | ||
116c20d2 NC |
35 | #undef STRING_SIZE_SIZE |
36 | #define STRING_SIZE_SIZE 4 | |
252b5132 | 37 | |
252b5132 RH |
38 | /* We reuse the SEC_ROM flag as a mark flag for garbage collection. |
39 | This flag will only be used on input sections. */ | |
40 | ||
41 | #define SEC_MARK (SEC_ROM) | |
42 | ||
252b5132 RH |
43 | /* The list of import files. */ |
44 | ||
dc810e39 AM |
45 | struct xcoff_import_file |
46 | { | |
252b5132 RH |
47 | /* The next entry in the list. */ |
48 | struct xcoff_import_file *next; | |
49 | /* The path. */ | |
50 | const char *path; | |
51 | /* The file name. */ | |
52 | const char *file; | |
53 | /* The member name. */ | |
54 | const char *member; | |
55 | }; | |
56 | ||
252b5132 RH |
57 | /* Information we keep for each section in the output file during the |
58 | final link phase. */ | |
59 | ||
dc810e39 AM |
60 | struct xcoff_link_section_info |
61 | { | |
252b5132 RH |
62 | /* The relocs to be output. */ |
63 | struct internal_reloc *relocs; | |
64 | /* For each reloc against a global symbol whose index was not known | |
65 | when the reloc was handled, the global hash table entry. */ | |
66 | struct xcoff_link_hash_entry **rel_hashes; | |
67 | /* If there is a TOC relative reloc against a global symbol, and the | |
68 | index of the TOC symbol is not known when the reloc was handled, | |
69 | an entry is added to this linked list. This is not an array, | |
70 | like rel_hashes, because this case is quite uncommon. */ | |
116c20d2 NC |
71 | struct xcoff_toc_rel_hash |
72 | { | |
fbc4fff4 KH |
73 | struct xcoff_toc_rel_hash *next; |
74 | struct xcoff_link_hash_entry *h; | |
75 | struct internal_reloc *rel; | |
76 | } *toc_rel_hashes; | |
252b5132 RH |
77 | }; |
78 | ||
24c611d1 RS |
79 | /* Information that the XCOFF linker collects about an archive. */ |
80 | struct xcoff_archive_info | |
81 | { | |
82 | /* The archive described by this entry. */ | |
83 | bfd *archive; | |
84 | ||
85 | /* The import path and import filename to use when referring to | |
86 | this archive in the .loader section. */ | |
87 | const char *imppath; | |
88 | const char *impfile; | |
ee698300 RS |
89 | |
90 | /* True if the archive contains a dynamic object. */ | |
91 | unsigned int contains_shared_object_p : 1; | |
92 | ||
93 | /* True if the previous field is valid. */ | |
94 | unsigned int know_contains_shared_object_p : 1; | |
24c611d1 RS |
95 | }; |
96 | ||
d286971a RS |
97 | struct xcoff_link_hash_table |
98 | { | |
99 | struct bfd_link_hash_table root; | |
100 | ||
101 | /* The .debug string hash table. We need to compute this while | |
102 | reading the input files, so that we know how large the .debug | |
103 | section will be before we assign section positions. */ | |
104 | struct bfd_strtab_hash *debug_strtab; | |
105 | ||
106 | /* The .debug section we will use for the final output. */ | |
107 | asection *debug_section; | |
108 | ||
109 | /* The .loader section we will use for the final output. */ | |
110 | asection *loader_section; | |
111 | ||
112 | /* A count of non TOC relative relocs which will need to be | |
113 | allocated in the .loader section. */ | |
114 | size_t ldrel_count; | |
115 | ||
116 | /* The .loader section header. */ | |
117 | struct internal_ldhdr ldhdr; | |
118 | ||
119 | /* The .gl section we use to hold global linkage code. */ | |
120 | asection *linkage_section; | |
121 | ||
122 | /* The .tc section we use to hold toc entries we build for global | |
123 | linkage code. */ | |
124 | asection *toc_section; | |
125 | ||
126 | /* The .ds section we use to hold function descriptors which we | |
127 | create for exported symbols. */ | |
128 | asection *descriptor_section; | |
129 | ||
130 | /* The list of import files. */ | |
131 | struct xcoff_import_file *imports; | |
132 | ||
133 | /* Required alignment of sections within the output file. */ | |
134 | unsigned long file_align; | |
135 | ||
136 | /* Whether the .text section must be read-only. */ | |
137 | bfd_boolean textro; | |
138 | ||
139 | /* Whether -brtl was specified. */ | |
140 | bfd_boolean rtld; | |
141 | ||
142 | /* Whether garbage collection was done. */ | |
143 | bfd_boolean gc; | |
144 | ||
145 | /* A linked list of symbols for which we have size information. */ | |
146 | struct xcoff_link_size_list | |
147 | { | |
148 | struct xcoff_link_size_list *next; | |
149 | struct xcoff_link_hash_entry *h; | |
150 | bfd_size_type size; | |
68ffbac6 | 151 | } |
d286971a RS |
152 | *size_list; |
153 | ||
24c611d1 RS |
154 | /* Information about archives. */ |
155 | htab_t archive_info; | |
156 | ||
d286971a RS |
157 | /* Magic sections: _text, _etext, _data, _edata, _end, end. */ |
158 | asection *special_sections[XCOFF_NUMBER_OF_SPECIAL_SECTIONS]; | |
159 | }; | |
160 | ||
252b5132 RH |
161 | /* Information that we pass around while doing the final link step. */ |
162 | ||
dc810e39 AM |
163 | struct xcoff_final_link_info |
164 | { | |
252b5132 RH |
165 | /* General link information. */ |
166 | struct bfd_link_info *info; | |
167 | /* Output BFD. */ | |
168 | bfd *output_bfd; | |
169 | /* Hash table for long symbol names. */ | |
170 | struct bfd_strtab_hash *strtab; | |
171 | /* Array of information kept for each output section, indexed by the | |
172 | target_index field. */ | |
173 | struct xcoff_link_section_info *section_info; | |
174 | /* Symbol index of last C_FILE symbol (-1 if none). */ | |
175 | long last_file_index; | |
176 | /* Contents of last C_FILE symbol. */ | |
177 | struct internal_syment last_file; | |
178 | /* Symbol index of TOC symbol. */ | |
179 | long toc_symindx; | |
180 | /* Start of .loader symbols. */ | |
beb1bf64 | 181 | bfd_byte *ldsym; |
252b5132 | 182 | /* Next .loader reloc to swap out. */ |
beb1bf64 | 183 | bfd_byte *ldrel; |
252b5132 RH |
184 | /* File position of start of line numbers. */ |
185 | file_ptr line_filepos; | |
186 | /* Buffer large enough to hold swapped symbols of any input file. */ | |
187 | struct internal_syment *internal_syms; | |
188 | /* Buffer large enough to hold output indices of symbols of any | |
189 | input file. */ | |
190 | long *sym_indices; | |
191 | /* Buffer large enough to hold output symbols for any input file. */ | |
192 | bfd_byte *outsyms; | |
193 | /* Buffer large enough to hold external line numbers for any input | |
194 | section. */ | |
195 | bfd_byte *linenos; | |
196 | /* Buffer large enough to hold any input section. */ | |
197 | bfd_byte *contents; | |
198 | /* Buffer large enough to hold external relocs of any input section. */ | |
199 | bfd_byte *external_relocs; | |
200 | }; | |
201 | ||
116c20d2 NC |
202 | static bfd_boolean xcoff_mark (struct bfd_link_info *, asection *); |
203 | ||
252b5132 | 204 | \f |
252b5132 | 205 | |
252b5132 RH |
206 | /* Routines to read XCOFF dynamic information. This don't really |
207 | belong here, but we already have the ldsym manipulation routines | |
208 | here. */ | |
209 | ||
210 | /* Read the contents of a section. */ | |
211 | ||
b34976b6 | 212 | static bfd_boolean |
116c20d2 | 213 | xcoff_get_section_contents (bfd *abfd, asection *sec) |
252b5132 RH |
214 | { |
215 | if (coff_section_data (abfd, sec) == NULL) | |
216 | { | |
986f0783 | 217 | size_t amt = sizeof (struct coff_section_tdata); |
116c20d2 | 218 | |
dc810e39 | 219 | sec->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 | 220 | if (sec->used_by_bfd == NULL) |
b34976b6 | 221 | return FALSE; |
252b5132 RH |
222 | } |
223 | ||
224 | if (coff_section_data (abfd, sec)->contents == NULL) | |
225 | { | |
eea6121a | 226 | bfd_byte *contents; |
116c20d2 NC |
227 | |
228 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
eea6121a AM |
229 | { |
230 | if (contents != NULL) | |
231 | free (contents); | |
232 | return FALSE; | |
233 | } | |
234 | coff_section_data (abfd, sec)->contents = contents; | |
252b5132 RH |
235 | } |
236 | ||
b34976b6 | 237 | return TRUE; |
252b5132 RH |
238 | } |
239 | ||
240 | /* Get the size required to hold the dynamic symbols. */ | |
241 | ||
242 | long | |
116c20d2 | 243 | _bfd_xcoff_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
244 | { |
245 | asection *lsec; | |
246 | bfd_byte *contents; | |
247 | struct internal_ldhdr ldhdr; | |
248 | ||
249 | if ((abfd->flags & DYNAMIC) == 0) | |
250 | { | |
251 | bfd_set_error (bfd_error_invalid_operation); | |
252 | return -1; | |
253 | } | |
254 | ||
255 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
256 | if (lsec == NULL) | |
257 | { | |
258 | bfd_set_error (bfd_error_no_symbols); | |
259 | return -1; | |
260 | } | |
261 | ||
262 | if (! xcoff_get_section_contents (abfd, lsec)) | |
263 | return -1; | |
264 | contents = coff_section_data (abfd, lsec)->contents; | |
265 | ||
116c20d2 | 266 | bfd_xcoff_swap_ldhdr_in (abfd, (void *) contents, &ldhdr); |
252b5132 RH |
267 | |
268 | return (ldhdr.l_nsyms + 1) * sizeof (asymbol *); | |
269 | } | |
270 | ||
271 | /* Get the dynamic symbols. */ | |
272 | ||
273 | long | |
116c20d2 | 274 | _bfd_xcoff_canonicalize_dynamic_symtab (bfd *abfd, asymbol **psyms) |
252b5132 RH |
275 | { |
276 | asection *lsec; | |
277 | bfd_byte *contents; | |
278 | struct internal_ldhdr ldhdr; | |
279 | const char *strings; | |
beb1bf64 | 280 | bfd_byte *elsym, *elsymend; |
252b5132 RH |
281 | coff_symbol_type *symbuf; |
282 | ||
283 | if ((abfd->flags & DYNAMIC) == 0) | |
284 | { | |
285 | bfd_set_error (bfd_error_invalid_operation); | |
286 | return -1; | |
287 | } | |
288 | ||
289 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
290 | if (lsec == NULL) | |
291 | { | |
292 | bfd_set_error (bfd_error_no_symbols); | |
293 | return -1; | |
294 | } | |
295 | ||
296 | if (! xcoff_get_section_contents (abfd, lsec)) | |
297 | return -1; | |
298 | contents = coff_section_data (abfd, lsec)->contents; | |
299 | ||
b34976b6 | 300 | coff_section_data (abfd, lsec)->keep_contents = TRUE; |
252b5132 | 301 | |
beb1bf64 | 302 | bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); |
252b5132 RH |
303 | |
304 | strings = (char *) contents + ldhdr.l_stoff; | |
305 | ||
116c20d2 | 306 | symbuf = bfd_zalloc (abfd, ldhdr.l_nsyms * sizeof (* symbuf)); |
252b5132 RH |
307 | if (symbuf == NULL) |
308 | return -1; | |
309 | ||
beb1bf64 TR |
310 | elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr); |
311 | ||
312 | elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(abfd); | |
313 | for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz(abfd), symbuf++, psyms++) | |
252b5132 RH |
314 | { |
315 | struct internal_ldsym ldsym; | |
316 | ||
beb1bf64 | 317 | bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym); |
252b5132 RH |
318 | |
319 | symbuf->symbol.the_bfd = abfd; | |
320 | ||
321 | if (ldsym._l._l_l._l_zeroes == 0) | |
322 | symbuf->symbol.name = strings + ldsym._l._l_l._l_offset; | |
323 | else | |
324 | { | |
beb1bf64 TR |
325 | char *c; |
326 | ||
dc810e39 | 327 | c = bfd_alloc (abfd, (bfd_size_type) SYMNMLEN + 1); |
beb1bf64 TR |
328 | if (c == NULL) |
329 | return -1; | |
330 | memcpy (c, ldsym._l._l_name, SYMNMLEN); | |
331 | c[SYMNMLEN] = '\0'; | |
332 | symbuf->symbol.name = c; | |
252b5132 RH |
333 | } |
334 | ||
335 | if (ldsym.l_smclas == XMC_XO) | |
336 | symbuf->symbol.section = bfd_abs_section_ptr; | |
337 | else | |
338 | symbuf->symbol.section = coff_section_from_bfd_index (abfd, | |
339 | ldsym.l_scnum); | |
340 | symbuf->symbol.value = ldsym.l_value - symbuf->symbol.section->vma; | |
341 | ||
342 | symbuf->symbol.flags = BSF_NO_FLAGS; | |
343 | if ((ldsym.l_smtype & L_EXPORT) != 0) | |
8602d4fe RS |
344 | { |
345 | if ((ldsym.l_smtype & L_WEAK) != 0) | |
346 | symbuf->symbol.flags |= BSF_WEAK; | |
347 | else | |
348 | symbuf->symbol.flags |= BSF_GLOBAL; | |
349 | } | |
252b5132 RH |
350 | |
351 | /* FIXME: We have no way to record the other information stored | |
b34976b6 | 352 | with the loader symbol. */ |
252b5132 RH |
353 | *psyms = (asymbol *) symbuf; |
354 | } | |
355 | ||
356 | *psyms = NULL; | |
357 | ||
358 | return ldhdr.l_nsyms; | |
359 | } | |
360 | ||
361 | /* Get the size required to hold the dynamic relocs. */ | |
362 | ||
363 | long | |
116c20d2 | 364 | _bfd_xcoff_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
365 | { |
366 | asection *lsec; | |
367 | bfd_byte *contents; | |
368 | struct internal_ldhdr ldhdr; | |
369 | ||
370 | if ((abfd->flags & DYNAMIC) == 0) | |
371 | { | |
372 | bfd_set_error (bfd_error_invalid_operation); | |
373 | return -1; | |
374 | } | |
375 | ||
376 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
377 | if (lsec == NULL) | |
378 | { | |
379 | bfd_set_error (bfd_error_no_symbols); | |
380 | return -1; | |
381 | } | |
382 | ||
383 | if (! xcoff_get_section_contents (abfd, lsec)) | |
384 | return -1; | |
385 | contents = coff_section_data (abfd, lsec)->contents; | |
386 | ||
beb1bf64 | 387 | bfd_xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); |
252b5132 RH |
388 | |
389 | return (ldhdr.l_nreloc + 1) * sizeof (arelent *); | |
390 | } | |
391 | ||
252b5132 RH |
392 | /* Get the dynamic relocs. */ |
393 | ||
394 | long | |
116c20d2 NC |
395 | _bfd_xcoff_canonicalize_dynamic_reloc (bfd *abfd, |
396 | arelent **prelocs, | |
397 | asymbol **syms) | |
252b5132 RH |
398 | { |
399 | asection *lsec; | |
400 | bfd_byte *contents; | |
401 | struct internal_ldhdr ldhdr; | |
402 | arelent *relbuf; | |
beb1bf64 | 403 | bfd_byte *elrel, *elrelend; |
252b5132 RH |
404 | |
405 | if ((abfd->flags & DYNAMIC) == 0) | |
406 | { | |
407 | bfd_set_error (bfd_error_invalid_operation); | |
408 | return -1; | |
409 | } | |
410 | ||
411 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
412 | if (lsec == NULL) | |
413 | { | |
414 | bfd_set_error (bfd_error_no_symbols); | |
415 | return -1; | |
416 | } | |
417 | ||
418 | if (! xcoff_get_section_contents (abfd, lsec)) | |
419 | return -1; | |
420 | contents = coff_section_data (abfd, lsec)->contents; | |
421 | ||
beb1bf64 | 422 | bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); |
252b5132 | 423 | |
116c20d2 | 424 | relbuf = bfd_alloc (abfd, ldhdr.l_nreloc * sizeof (arelent)); |
252b5132 RH |
425 | if (relbuf == NULL) |
426 | return -1; | |
427 | ||
beb1bf64 TR |
428 | elrel = contents + bfd_xcoff_loader_reloc_offset(abfd, &ldhdr); |
429 | ||
430 | elrelend = elrel + ldhdr.l_nreloc * bfd_xcoff_ldrelsz(abfd); | |
dc810e39 AM |
431 | for (; elrel < elrelend; elrel += bfd_xcoff_ldrelsz(abfd), relbuf++, |
432 | prelocs++) | |
252b5132 RH |
433 | { |
434 | struct internal_ldrel ldrel; | |
435 | ||
beb1bf64 | 436 | bfd_xcoff_swap_ldrel_in (abfd, elrel, &ldrel); |
252b5132 RH |
437 | |
438 | if (ldrel.l_symndx >= 3) | |
439 | relbuf->sym_ptr_ptr = syms + (ldrel.l_symndx - 3); | |
440 | else | |
441 | { | |
442 | const char *name; | |
443 | asection *sec; | |
444 | ||
445 | switch (ldrel.l_symndx) | |
446 | { | |
447 | case 0: | |
448 | name = ".text"; | |
449 | break; | |
450 | case 1: | |
451 | name = ".data"; | |
452 | break; | |
453 | case 2: | |
454 | name = ".bss"; | |
455 | break; | |
456 | default: | |
457 | abort (); | |
458 | break; | |
459 | } | |
460 | ||
461 | sec = bfd_get_section_by_name (abfd, name); | |
462 | if (sec == NULL) | |
463 | { | |
464 | bfd_set_error (bfd_error_bad_value); | |
465 | return -1; | |
466 | } | |
467 | ||
468 | relbuf->sym_ptr_ptr = sec->symbol_ptr_ptr; | |
469 | } | |
470 | ||
471 | relbuf->address = ldrel.l_vaddr; | |
472 | relbuf->addend = 0; | |
473 | ||
474 | /* Most dynamic relocs have the same type. FIXME: This is only | |
b34976b6 AM |
475 | correct if ldrel.l_rtype == 0. In other cases, we should use |
476 | a different howto. */ | |
beb1bf64 | 477 | relbuf->howto = bfd_xcoff_dynamic_reloc_howto(abfd); |
252b5132 RH |
478 | |
479 | /* FIXME: We have no way to record the l_rsecnm field. */ | |
480 | ||
481 | *prelocs = relbuf; | |
482 | } | |
483 | ||
484 | *prelocs = NULL; | |
485 | ||
486 | return ldhdr.l_nreloc; | |
487 | } | |
488 | \f | |
24c611d1 RS |
489 | /* Hash functions for xcoff_link_hash_table's archive_info. */ |
490 | ||
491 | static hashval_t | |
492 | xcoff_archive_info_hash (const void *data) | |
493 | { | |
494 | const struct xcoff_archive_info *info; | |
495 | ||
496 | info = (const struct xcoff_archive_info *) data; | |
497 | return htab_hash_pointer (info->archive); | |
498 | } | |
499 | ||
500 | static int | |
501 | xcoff_archive_info_eq (const void *data1, const void *data2) | |
502 | { | |
503 | const struct xcoff_archive_info *info1; | |
504 | const struct xcoff_archive_info *info2; | |
505 | ||
506 | info1 = (const struct xcoff_archive_info *) data1; | |
507 | info2 = (const struct xcoff_archive_info *) data2; | |
508 | return info1->archive == info2->archive; | |
509 | } | |
510 | ||
511 | /* Return information about archive ARCHIVE. Return NULL on error. */ | |
512 | ||
513 | static struct xcoff_archive_info * | |
514 | xcoff_get_archive_info (struct bfd_link_info *info, bfd *archive) | |
515 | { | |
516 | struct xcoff_link_hash_table *htab; | |
517 | struct xcoff_archive_info *entryp, entry; | |
518 | void **slot; | |
519 | ||
520 | htab = xcoff_hash_table (info); | |
521 | entry.archive = archive; | |
522 | slot = htab_find_slot (htab->archive_info, &entry, INSERT); | |
523 | if (!slot) | |
524 | return NULL; | |
525 | ||
526 | entryp = *slot; | |
527 | if (!entryp) | |
528 | { | |
529 | entryp = bfd_zalloc (archive, sizeof (entry)); | |
530 | if (!entryp) | |
531 | return NULL; | |
532 | ||
533 | entryp->archive = archive; | |
534 | *slot = entryp; | |
535 | } | |
536 | return entryp; | |
537 | } | |
538 | \f | |
252b5132 RH |
539 | /* Routine to create an entry in an XCOFF link hash table. */ |
540 | ||
541 | static struct bfd_hash_entry * | |
116c20d2 NC |
542 | xcoff_link_hash_newfunc (struct bfd_hash_entry *entry, |
543 | struct bfd_hash_table *table, | |
544 | const char *string) | |
252b5132 RH |
545 | { |
546 | struct xcoff_link_hash_entry *ret = (struct xcoff_link_hash_entry *) entry; | |
547 | ||
548 | /* Allocate the structure if it has not already been allocated by a | |
549 | subclass. */ | |
116c20d2 NC |
550 | if (ret == NULL) |
551 | ret = bfd_hash_allocate (table, sizeof (* ret)); | |
552 | if (ret == NULL) | |
553 | return NULL; | |
252b5132 RH |
554 | |
555 | /* Call the allocation method of the superclass. */ | |
556 | ret = ((struct xcoff_link_hash_entry *) | |
557 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
558 | table, string)); | |
559 | if (ret != NULL) | |
560 | { | |
561 | /* Set local fields. */ | |
562 | ret->indx = -1; | |
563 | ret->toc_section = NULL; | |
564 | ret->u.toc_indx = -1; | |
565 | ret->descriptor = NULL; | |
566 | ret->ldsym = NULL; | |
567 | ret->ldindx = -1; | |
568 | ret->flags = 0; | |
569 | ret->smclas = XMC_UA; | |
570 | } | |
571 | ||
572 | return (struct bfd_hash_entry *) ret; | |
573 | } | |
574 | ||
68faa637 AM |
575 | /* Destroy an XCOFF link hash table. */ |
576 | ||
d495ab0d AM |
577 | static void |
578 | _bfd_xcoff_bfd_link_hash_table_free (bfd *obfd) | |
68faa637 | 579 | { |
d495ab0d | 580 | struct xcoff_link_hash_table *ret; |
68faa637 | 581 | |
d495ab0d AM |
582 | ret = (struct xcoff_link_hash_table *) obfd->link.hash; |
583 | if (ret->archive_info) | |
584 | htab_delete (ret->archive_info); | |
585 | if (ret->debug_strtab) | |
586 | _bfd_stringtab_free (ret->debug_strtab); | |
587 | _bfd_generic_link_hash_table_free (obfd); | |
68faa637 AM |
588 | } |
589 | ||
590 | /* Create an XCOFF link hash table. */ | |
252b5132 RH |
591 | |
592 | struct bfd_link_hash_table * | |
116c20d2 | 593 | _bfd_xcoff_bfd_link_hash_table_create (bfd *abfd) |
252b5132 RH |
594 | { |
595 | struct xcoff_link_hash_table *ret; | |
986f0783 | 596 | size_t amt = sizeof (* ret); |
252b5132 | 597 | |
7bf52ea2 | 598 | ret = bfd_zmalloc (amt); |
116c20d2 NC |
599 | if (ret == NULL) |
600 | return NULL; | |
66eb6687 AM |
601 | if (!_bfd_link_hash_table_init (&ret->root, abfd, xcoff_link_hash_newfunc, |
602 | sizeof (struct xcoff_link_hash_entry))) | |
252b5132 | 603 | { |
e2d34d7d | 604 | free (ret); |
116c20d2 | 605 | return NULL; |
252b5132 RH |
606 | } |
607 | ||
608 | ret->debug_strtab = _bfd_xcoff_stringtab_init (); | |
24c611d1 RS |
609 | ret->archive_info = htab_create (37, xcoff_archive_info_hash, |
610 | xcoff_archive_info_eq, NULL); | |
d495ab0d AM |
611 | if (!ret->debug_strtab || !ret->archive_info) |
612 | { | |
613 | _bfd_xcoff_bfd_link_hash_table_free (abfd); | |
614 | return NULL; | |
615 | } | |
616 | ret->root.hash_table_free = _bfd_xcoff_bfd_link_hash_table_free; | |
252b5132 RH |
617 | |
618 | /* The linker will always generate a full a.out header. We need to | |
619 | record that fact now, before the sizeof_headers routine could be | |
620 | called. */ | |
b34976b6 | 621 | xcoff_data (abfd)->full_aouthdr = TRUE; |
252b5132 RH |
622 | |
623 | return &ret->root; | |
624 | } | |
252b5132 RH |
625 | \f |
626 | /* Read internal relocs for an XCOFF csect. This is a wrapper around | |
627 | _bfd_coff_read_internal_relocs which tries to take advantage of any | |
628 | relocs which may have been cached for the enclosing section. */ | |
629 | ||
630 | static struct internal_reloc * | |
116c20d2 NC |
631 | xcoff_read_internal_relocs (bfd *abfd, |
632 | asection *sec, | |
633 | bfd_boolean cache, | |
634 | bfd_byte *external_relocs, | |
635 | bfd_boolean require_internal, | |
636 | struct internal_reloc *internal_relocs) | |
252b5132 RH |
637 | { |
638 | if (coff_section_data (abfd, sec) != NULL | |
639 | && coff_section_data (abfd, sec)->relocs == NULL | |
640 | && xcoff_section_data (abfd, sec) != NULL) | |
641 | { | |
642 | asection *enclosing; | |
643 | ||
644 | enclosing = xcoff_section_data (abfd, sec)->enclosing; | |
645 | ||
646 | if (enclosing != NULL | |
647 | && (coff_section_data (abfd, enclosing) == NULL | |
648 | || coff_section_data (abfd, enclosing)->relocs == NULL) | |
649 | && cache | |
650 | && enclosing->reloc_count > 0) | |
651 | { | |
b34976b6 | 652 | if (_bfd_coff_read_internal_relocs (abfd, enclosing, TRUE, |
116c20d2 | 653 | external_relocs, FALSE, NULL) |
252b5132 RH |
654 | == NULL) |
655 | return NULL; | |
656 | } | |
657 | ||
658 | if (enclosing != NULL | |
659 | && coff_section_data (abfd, enclosing) != NULL | |
660 | && coff_section_data (abfd, enclosing)->relocs != NULL) | |
661 | { | |
662 | size_t off; | |
663 | ||
664 | off = ((sec->rel_filepos - enclosing->rel_filepos) | |
665 | / bfd_coff_relsz (abfd)); | |
beb1bf64 | 666 | |
252b5132 RH |
667 | if (! require_internal) |
668 | return coff_section_data (abfd, enclosing)->relocs + off; | |
669 | memcpy (internal_relocs, | |
670 | coff_section_data (abfd, enclosing)->relocs + off, | |
671 | sec->reloc_count * sizeof (struct internal_reloc)); | |
672 | return internal_relocs; | |
673 | } | |
674 | } | |
675 | ||
676 | return _bfd_coff_read_internal_relocs (abfd, sec, cache, external_relocs, | |
677 | require_internal, internal_relocs); | |
678 | } | |
679 | \f | |
24c611d1 RS |
680 | /* Split FILENAME into an import path and an import filename, |
681 | storing them in *IMPPATH and *IMPFILE respectively. */ | |
682 | ||
683 | bfd_boolean | |
684 | bfd_xcoff_split_import_path (bfd *abfd, const char *filename, | |
685 | const char **imppath, const char **impfile) | |
686 | { | |
91d6fa6a | 687 | const char *base; |
24c611d1 RS |
688 | size_t length; |
689 | char *path; | |
690 | ||
91d6fa6a NC |
691 | base = lbasename (filename); |
692 | length = base - filename; | |
24c611d1 RS |
693 | if (length == 0) |
694 | /* The filename has no directory component, so use an empty path. */ | |
695 | *imppath = ""; | |
696 | else if (length == 1) | |
697 | /* The filename is in the root directory. */ | |
698 | *imppath = "/"; | |
699 | else | |
700 | { | |
701 | /* Extract the (non-empty) directory part. Note that we don't | |
702 | need to strip duplicate directory separators from any part | |
703 | of the string; the native linker doesn't do that either. */ | |
704 | path = bfd_alloc (abfd, length); | |
705 | if (path == NULL) | |
706 | return FALSE; | |
707 | memcpy (path, filename, length - 1); | |
708 | path[length - 1] = 0; | |
709 | *imppath = path; | |
710 | } | |
91d6fa6a | 711 | *impfile = base; |
24c611d1 RS |
712 | return TRUE; |
713 | } | |
714 | ||
715 | /* Set ARCHIVE's import path as though its filename had been given | |
716 | as FILENAME. */ | |
717 | ||
718 | bfd_boolean | |
719 | bfd_xcoff_set_archive_import_path (struct bfd_link_info *info, | |
720 | bfd *archive, const char *filename) | |
721 | { | |
722 | struct xcoff_archive_info *archive_info; | |
723 | ||
724 | archive_info = xcoff_get_archive_info (info, archive); | |
725 | return (archive_info != NULL | |
726 | && bfd_xcoff_split_import_path (archive, filename, | |
727 | &archive_info->imppath, | |
728 | &archive_info->impfile)); | |
729 | } | |
730 | ||
731 | /* H is an imported symbol. Set the import module's path, file and member | |
732 | to IMPATH, IMPFILE and IMPMEMBER respectively. All three are null if | |
733 | no specific import module is specified. */ | |
734 | ||
735 | static bfd_boolean | |
736 | xcoff_set_import_path (struct bfd_link_info *info, | |
737 | struct xcoff_link_hash_entry *h, | |
738 | const char *imppath, const char *impfile, | |
739 | const char *impmember) | |
740 | { | |
741 | unsigned int c; | |
742 | struct xcoff_import_file **pp; | |
743 | ||
744 | /* We overload the ldindx field to hold the l_ifile value for this | |
745 | symbol. */ | |
746 | BFD_ASSERT (h->ldsym == NULL); | |
747 | BFD_ASSERT ((h->flags & XCOFF_BUILT_LDSYM) == 0); | |
748 | if (imppath == NULL) | |
749 | h->ldindx = -1; | |
750 | else | |
751 | { | |
752 | /* We start c at 1 because the first entry in the import list is | |
753 | reserved for the library search path. */ | |
754 | for (pp = &xcoff_hash_table (info)->imports, c = 1; | |
755 | *pp != NULL; | |
756 | pp = &(*pp)->next, ++c) | |
757 | { | |
007d6189 KT |
758 | if (filename_cmp ((*pp)->path, imppath) == 0 |
759 | && filename_cmp ((*pp)->file, impfile) == 0 | |
760 | && filename_cmp ((*pp)->member, impmember) == 0) | |
24c611d1 RS |
761 | break; |
762 | } | |
763 | ||
764 | if (*pp == NULL) | |
765 | { | |
766 | struct xcoff_import_file *n; | |
986f0783 | 767 | size_t amt = sizeof (*n); |
24c611d1 RS |
768 | |
769 | n = bfd_alloc (info->output_bfd, amt); | |
770 | if (n == NULL) | |
771 | return FALSE; | |
772 | n->next = NULL; | |
773 | n->path = imppath; | |
774 | n->file = impfile; | |
775 | n->member = impmember; | |
776 | *pp = n; | |
777 | } | |
778 | h->ldindx = c; | |
779 | } | |
780 | return TRUE; | |
781 | } | |
782 | \f | |
8602d4fe RS |
783 | /* H is the bfd symbol associated with exported .loader symbol LDSYM. |
784 | Return true if LDSYM defines H. */ | |
785 | ||
786 | static bfd_boolean | |
787 | xcoff_dynamic_definition_p (struct xcoff_link_hash_entry *h, | |
788 | struct internal_ldsym *ldsym) | |
789 | { | |
790 | /* If we didn't know about H before processing LDSYM, LDSYM | |
791 | definitely defines H. */ | |
792 | if (h->root.type == bfd_link_hash_new) | |
793 | return TRUE; | |
794 | ||
795 | /* If H is currently a weak dynamic symbol, and if LDSYM is a strong | |
796 | dynamic symbol, LDSYM trumps the current definition of H. */ | |
797 | if ((ldsym->l_smtype & L_WEAK) == 0 | |
798 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0 | |
799 | && (h->flags & XCOFF_DEF_REGULAR) == 0 | |
800 | && (h->root.type == bfd_link_hash_defweak | |
801 | || h->root.type == bfd_link_hash_undefweak)) | |
802 | return TRUE; | |
803 | ||
804 | /* If H is currently undefined, LDSYM defines it. */ | |
805 | if ((h->flags & XCOFF_DEF_DYNAMIC) == 0 | |
806 | && (h->root.type == bfd_link_hash_undefined | |
807 | || h->root.type == bfd_link_hash_undefweak)) | |
808 | return TRUE; | |
809 | ||
810 | return FALSE; | |
811 | } | |
812 | ||
116c20d2 NC |
813 | /* This function is used to add symbols from a dynamic object to the |
814 | global symbol table. */ | |
252b5132 | 815 | |
b34976b6 | 816 | static bfd_boolean |
116c20d2 | 817 | xcoff_link_add_dynamic_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
818 | { |
819 | asection *lsec; | |
beb1bf64 | 820 | bfd_byte *contents; |
252b5132 RH |
821 | struct internal_ldhdr ldhdr; |
822 | const char *strings; | |
beb1bf64 | 823 | bfd_byte *elsym, *elsymend; |
116c20d2 | 824 | struct xcoff_import_file *n; |
116c20d2 NC |
825 | unsigned int c; |
826 | struct xcoff_import_file **pp; | |
252b5132 | 827 | |
116c20d2 NC |
828 | /* We can only handle a dynamic object if we are generating an XCOFF |
829 | output file. */ | |
f13a99db | 830 | if (info->output_bfd->xvec != abfd->xvec) |
116c20d2 | 831 | { |
4eca0228 | 832 | _bfd_error_handler |
871b3ab2 | 833 | (_("%pB: XCOFF shared object when not producing XCOFF output"), |
dae82561 | 834 | abfd); |
116c20d2 NC |
835 | bfd_set_error (bfd_error_invalid_operation); |
836 | return FALSE; | |
837 | } | |
252b5132 | 838 | |
116c20d2 NC |
839 | /* The symbols we use from a dynamic object are not the symbols in |
840 | the normal symbol table, but, rather, the symbols in the export | |
841 | table. If there is a global symbol in a dynamic object which is | |
842 | not in the export table, the loader will not be able to find it, | |
843 | so we don't want to find it either. Also, on AIX 4.1.3, shr.o in | |
844 | libc.a has symbols in the export table which are not in the | |
845 | symbol table. */ | |
846 | ||
847 | /* Read in the .loader section. FIXME: We should really use the | |
848 | o_snloader field in the a.out header, rather than grabbing the | |
849 | section by name. */ | |
252b5132 RH |
850 | lsec = bfd_get_section_by_name (abfd, ".loader"); |
851 | if (lsec == NULL) | |
852 | { | |
4eca0228 | 853 | _bfd_error_handler |
871b3ab2 | 854 | (_("%pB: dynamic object with no .loader section"), |
dae82561 | 855 | abfd); |
116c20d2 NC |
856 | bfd_set_error (bfd_error_no_symbols); |
857 | return FALSE; | |
252b5132 RH |
858 | } |
859 | ||
860 | if (! xcoff_get_section_contents (abfd, lsec)) | |
b34976b6 | 861 | return FALSE; |
beb1bf64 TR |
862 | contents = coff_section_data (abfd, lsec)->contents; |
863 | ||
116c20d2 NC |
864 | /* Remove the sections from this object, so that they do not get |
865 | included in the link. */ | |
866 | bfd_section_list_clear (abfd); | |
867 | ||
beb1bf64 | 868 | bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); |
252b5132 | 869 | |
beb1bf64 | 870 | strings = (char *) contents + ldhdr.l_stoff; |
252b5132 | 871 | |
beb1bf64 | 872 | elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr); |
252b5132 | 873 | |
beb1bf64 | 874 | elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(abfd); |
116c20d2 | 875 | |
beb1bf64 | 876 | for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz(abfd)) |
252b5132 RH |
877 | { |
878 | struct internal_ldsym ldsym; | |
879 | char nambuf[SYMNMLEN + 1]; | |
880 | const char *name; | |
116c20d2 | 881 | struct xcoff_link_hash_entry *h; |
252b5132 | 882 | |
beb1bf64 | 883 | bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym); |
252b5132 RH |
884 | |
885 | /* We are only interested in exported symbols. */ | |
886 | if ((ldsym.l_smtype & L_EXPORT) == 0) | |
887 | continue; | |
888 | ||
889 | if (ldsym._l._l_l._l_zeroes == 0) | |
890 | name = strings + ldsym._l._l_l._l_offset; | |
891 | else | |
892 | { | |
893 | memcpy (nambuf, ldsym._l._l_name, SYMNMLEN); | |
894 | nambuf[SYMNMLEN] = '\0'; | |
895 | name = nambuf; | |
896 | } | |
897 | ||
116c20d2 NC |
898 | /* Normally we could not call xcoff_link_hash_lookup in an add |
899 | symbols routine, since we might not be using an XCOFF hash | |
900 | table. However, we verified above that we are using an XCOFF | |
b34976b6 | 901 | hash table. */ |
252b5132 | 902 | |
116c20d2 NC |
903 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, TRUE, |
904 | TRUE, TRUE); | |
905 | if (h == NULL) | |
906 | return FALSE; | |
252b5132 | 907 | |
8602d4fe RS |
908 | if (!xcoff_dynamic_definition_p (h, &ldsym)) |
909 | continue; | |
116c20d2 | 910 | |
8602d4fe RS |
911 | h->flags |= XCOFF_DEF_DYNAMIC; |
912 | h->smclas = ldsym.l_smclas; | |
913 | if (h->smclas == XMC_XO) | |
116c20d2 NC |
914 | { |
915 | /* This symbol has an absolute value. */ | |
8602d4fe RS |
916 | if ((ldsym.l_smtype & L_WEAK) != 0) |
917 | h->root.type = bfd_link_hash_defweak; | |
918 | else | |
919 | h->root.type = bfd_link_hash_defined; | |
116c20d2 NC |
920 | h->root.u.def.section = bfd_abs_section_ptr; |
921 | h->root.u.def.value = ldsym.l_value; | |
922 | } | |
8602d4fe RS |
923 | else |
924 | { | |
925 | /* Otherwise, we don't bother to actually define the symbol, | |
926 | since we don't have a section to put it in anyhow. | |
927 | We assume instead that an undefined XCOFF_DEF_DYNAMIC symbol | |
928 | should be imported from the symbol's undef.abfd. */ | |
929 | if ((ldsym.l_smtype & L_WEAK) != 0) | |
930 | h->root.type = bfd_link_hash_undefweak; | |
931 | else | |
932 | h->root.type = bfd_link_hash_undefined; | |
933 | h->root.u.undef.abfd = abfd; | |
934 | } | |
116c20d2 NC |
935 | |
936 | /* If this symbol defines a function descriptor, then it | |
937 | implicitly defines the function code as well. */ | |
938 | if (h->smclas == XMC_DS | |
939 | || (h->smclas == XMC_XO && name[0] != '.')) | |
940 | h->flags |= XCOFF_DESCRIPTOR; | |
941 | if ((h->flags & XCOFF_DESCRIPTOR) != 0) | |
942 | { | |
943 | struct xcoff_link_hash_entry *hds; | |
944 | ||
945 | hds = h->descriptor; | |
946 | if (hds == NULL) | |
947 | { | |
948 | char *dsnm; | |
949 | ||
950 | dsnm = bfd_malloc ((bfd_size_type) strlen (name) + 2); | |
951 | if (dsnm == NULL) | |
952 | return FALSE; | |
953 | dsnm[0] = '.'; | |
954 | strcpy (dsnm + 1, name); | |
955 | hds = xcoff_link_hash_lookup (xcoff_hash_table (info), dsnm, | |
956 | TRUE, TRUE, TRUE); | |
957 | free (dsnm); | |
958 | if (hds == NULL) | |
959 | return FALSE; | |
960 | ||
116c20d2 NC |
961 | hds->descriptor = h; |
962 | h->descriptor = hds; | |
963 | } | |
964 | ||
8602d4fe | 965 | if (xcoff_dynamic_definition_p (hds, &ldsym)) |
116c20d2 | 966 | { |
8602d4fe RS |
967 | hds->root.type = h->root.type; |
968 | hds->flags |= XCOFF_DEF_DYNAMIC; | |
969 | if (h->smclas == XMC_XO) | |
970 | { | |
971 | /* An absolute symbol appears to actually define code, not a | |
972 | function descriptor. This is how some math functions are | |
973 | implemented on AIX 4.1. */ | |
974 | hds->smclas = XMC_XO; | |
975 | hds->root.u.def.section = bfd_abs_section_ptr; | |
976 | hds->root.u.def.value = ldsym.l_value; | |
977 | } | |
978 | else | |
979 | { | |
980 | hds->smclas = XMC_PR; | |
981 | hds->root.u.undef.abfd = abfd; | |
982 | /* We do not want to add this to the undefined | |
983 | symbol list. */ | |
984 | } | |
116c20d2 NC |
985 | } |
986 | } | |
987 | } | |
988 | ||
989 | if (contents != NULL && ! coff_section_data (abfd, lsec)->keep_contents) | |
252b5132 | 990 | { |
116c20d2 NC |
991 | free (coff_section_data (abfd, lsec)->contents); |
992 | coff_section_data (abfd, lsec)->contents = NULL; | |
252b5132 RH |
993 | } |
994 | ||
116c20d2 NC |
995 | /* Record this file in the import files. */ |
996 | n = bfd_alloc (abfd, (bfd_size_type) sizeof (struct xcoff_import_file)); | |
997 | if (n == NULL) | |
998 | return FALSE; | |
999 | n->next = NULL; | |
252b5132 | 1000 | |
b0cffb47 | 1001 | if (abfd->my_archive == NULL || bfd_is_thin_archive (abfd->my_archive)) |
252b5132 | 1002 | { |
765cf5f6 | 1003 | if (!bfd_xcoff_split_import_path (abfd, bfd_get_filename (abfd), |
24c611d1 RS |
1004 | &n->path, &n->file)) |
1005 | return FALSE; | |
1006 | n->member = ""; | |
116c20d2 NC |
1007 | } |
1008 | else | |
1009 | { | |
24c611d1 RS |
1010 | struct xcoff_archive_info *archive_info; |
1011 | ||
1012 | archive_info = xcoff_get_archive_info (info, abfd->my_archive); | |
1013 | if (!archive_info->impfile) | |
1014 | { | |
1015 | if (!bfd_xcoff_split_import_path (archive_info->archive, | |
765cf5f6 AM |
1016 | bfd_get_filename (archive_info |
1017 | ->archive), | |
24c611d1 RS |
1018 | &archive_info->imppath, |
1019 | &archive_info->impfile)) | |
1020 | return FALSE; | |
1021 | } | |
1022 | n->path = archive_info->imppath; | |
1023 | n->file = archive_info->impfile; | |
1024 | n->member = bfd_get_filename (abfd); | |
252b5132 RH |
1025 | } |
1026 | ||
116c20d2 NC |
1027 | /* We start c at 1 because the first import file number is reserved |
1028 | for LIBPATH. */ | |
1029 | for (pp = &xcoff_hash_table (info)->imports, c = 1; | |
1030 | *pp != NULL; | |
1031 | pp = &(*pp)->next, ++c) | |
1032 | ; | |
1033 | *pp = n; | |
252b5132 | 1034 | |
116c20d2 | 1035 | xcoff_data (abfd)->import_file_id = c; |
252b5132 | 1036 | |
116c20d2 | 1037 | return TRUE; |
252b5132 RH |
1038 | } |
1039 | ||
dc810e39 AM |
1040 | /* xcoff_link_create_extra_sections |
1041 | ||
1042 | Takes care of creating the .loader, .gl, .ds, .debug and sections. */ | |
1043 | ||
b34976b6 | 1044 | static bfd_boolean |
116c20d2 | 1045 | xcoff_link_create_extra_sections (bfd * abfd, struct bfd_link_info *info) |
dc810e39 | 1046 | { |
b34976b6 | 1047 | bfd_boolean return_value = FALSE; |
beb1bf64 | 1048 | |
f13a99db | 1049 | if (info->output_bfd->xvec == abfd->xvec) |
dc810e39 | 1050 | { |
beb1bf64 TR |
1051 | /* We need to build a .loader section, so we do it here. This |
1052 | won't work if we're producing an XCOFF output file with no | |
1053 | XCOFF input files. FIXME. */ | |
1054 | ||
0e1862bb | 1055 | if (!bfd_link_relocatable (info) |
b3d1832c | 1056 | && xcoff_hash_table (info)->loader_section == NULL) |
dc810e39 AM |
1057 | { |
1058 | asection *lsec; | |
117ed4f8 | 1059 | flagword flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY; |
dc810e39 | 1060 | |
117ed4f8 | 1061 | lsec = bfd_make_section_anyway_with_flags (abfd, ".loader", flags); |
dc810e39 | 1062 | if (lsec == NULL) |
116c20d2 NC |
1063 | goto end_return; |
1064 | ||
dc810e39 | 1065 | xcoff_hash_table (info)->loader_section = lsec; |
beb1bf64 | 1066 | } |
beb1bf64 TR |
1067 | |
1068 | /* Likewise for the linkage section. */ | |
dc810e39 AM |
1069 | if (xcoff_hash_table (info)->linkage_section == NULL) |
1070 | { | |
1071 | asection *lsec; | |
117ed4f8 AM |
1072 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
1073 | | SEC_IN_MEMORY); | |
beb1bf64 | 1074 | |
117ed4f8 | 1075 | lsec = bfd_make_section_anyway_with_flags (abfd, ".gl", flags); |
dc810e39 | 1076 | if (lsec == NULL) |
116c20d2 | 1077 | goto end_return; |
beb1bf64 | 1078 | |
dc810e39 | 1079 | xcoff_hash_table (info)->linkage_section = lsec; |
dc810e39 AM |
1080 | lsec->alignment_power = 2; |
1081 | } | |
beb1bf64 TR |
1082 | |
1083 | /* Likewise for the TOC section. */ | |
dc810e39 AM |
1084 | if (xcoff_hash_table (info)->toc_section == NULL) |
1085 | { | |
1086 | asection *tsec; | |
117ed4f8 AM |
1087 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
1088 | | SEC_IN_MEMORY); | |
beb1bf64 | 1089 | |
117ed4f8 | 1090 | tsec = bfd_make_section_anyway_with_flags (abfd, ".tc", flags); |
dc810e39 | 1091 | if (tsec == NULL) |
116c20d2 | 1092 | goto end_return; |
beb1bf64 | 1093 | |
dc810e39 | 1094 | xcoff_hash_table (info)->toc_section = tsec; |
dc810e39 | 1095 | tsec->alignment_power = 2; |
beb1bf64 TR |
1096 | } |
1097 | ||
dc810e39 AM |
1098 | /* Likewise for the descriptor section. */ |
1099 | if (xcoff_hash_table (info)->descriptor_section == NULL) | |
1100 | { | |
1101 | asection *dsec; | |
117ed4f8 AM |
1102 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
1103 | | SEC_IN_MEMORY); | |
dc810e39 | 1104 | |
117ed4f8 | 1105 | dsec = bfd_make_section_anyway_with_flags (abfd, ".ds", flags); |
dc810e39 | 1106 | if (dsec == NULL) |
116c20d2 | 1107 | goto end_return; |
dc810e39 AM |
1108 | |
1109 | xcoff_hash_table (info)->descriptor_section = dsec; | |
dc810e39 AM |
1110 | dsec->alignment_power = 2; |
1111 | } | |
beb1bf64 TR |
1112 | |
1113 | /* Likewise for the .debug section. */ | |
1114 | if (xcoff_hash_table (info)->debug_section == NULL | |
dc810e39 AM |
1115 | && info->strip != strip_all) |
1116 | { | |
1117 | asection *dsec; | |
117ed4f8 | 1118 | flagword flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY; |
beb1bf64 | 1119 | |
117ed4f8 | 1120 | dsec = bfd_make_section_anyway_with_flags (abfd, ".debug", flags); |
dc810e39 | 1121 | if (dsec == NULL) |
116c20d2 NC |
1122 | goto end_return; |
1123 | ||
dc810e39 | 1124 | xcoff_hash_table (info)->debug_section = dsec; |
beb1bf64 | 1125 | } |
dc810e39 AM |
1126 | } |
1127 | ||
b34976b6 | 1128 | return_value = TRUE; |
beb1bf64 TR |
1129 | |
1130 | end_return: | |
1131 | ||
1132 | return return_value; | |
1133 | } | |
1134 | ||
116c20d2 NC |
1135 | /* Returns the index of reloc in RELOCS with the least address greater |
1136 | than or equal to ADDRESS. The relocs are sorted by address. */ | |
1137 | ||
1138 | static bfd_size_type | |
1139 | xcoff_find_reloc (struct internal_reloc *relocs, | |
1140 | bfd_size_type count, | |
1141 | bfd_vma address) | |
1142 | { | |
1143 | bfd_size_type min, max, this; | |
1144 | ||
1145 | if (count < 2) | |
1146 | { | |
1147 | if (count == 1 && relocs[0].r_vaddr < address) | |
1148 | return 1; | |
1149 | else | |
1150 | return 0; | |
1151 | } | |
1152 | ||
1153 | min = 0; | |
1154 | max = count; | |
1155 | ||
1156 | /* Do a binary search over (min,max]. */ | |
1157 | while (min + 1 < max) | |
1158 | { | |
1159 | bfd_vma raddr; | |
1160 | ||
1161 | this = (max + min) / 2; | |
1162 | raddr = relocs[this].r_vaddr; | |
1163 | if (raddr > address) | |
1164 | max = this; | |
1165 | else if (raddr < address) | |
1166 | min = this; | |
1167 | else | |
1168 | { | |
1169 | min = this; | |
1170 | break; | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | if (relocs[min].r_vaddr < address) | |
1175 | return min + 1; | |
1176 | ||
1177 | while (min > 0 | |
1178 | && relocs[min - 1].r_vaddr == address) | |
1179 | --min; | |
1180 | ||
1181 | return min; | |
1182 | } | |
1183 | ||
252b5132 RH |
1184 | /* Add all the symbols from an object file to the hash table. |
1185 | ||
1186 | XCOFF is a weird format. A normal XCOFF .o files will have three | |
1187 | COFF sections--.text, .data, and .bss--but each COFF section will | |
1188 | contain many csects. These csects are described in the symbol | |
1189 | table. From the linker's point of view, each csect must be | |
1190 | considered a section in its own right. For example, a TOC entry is | |
1191 | handled as a small XMC_TC csect. The linker must be able to merge | |
1192 | different TOC entries together, which means that it must be able to | |
1193 | extract the XMC_TC csects from the .data section of the input .o | |
1194 | file. | |
1195 | ||
1196 | From the point of view of our linker, this is, of course, a hideous | |
1197 | nightmare. We cope by actually creating sections for each csect, | |
1198 | and discarding the original sections. We then have to handle the | |
1199 | relocation entries carefully, since the only way to tell which | |
1200 | csect they belong to is to examine the address. */ | |
1201 | ||
b34976b6 | 1202 | static bfd_boolean |
116c20d2 | 1203 | xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
1204 | { |
1205 | unsigned int n_tmask; | |
1206 | unsigned int n_btshft; | |
b34976b6 | 1207 | bfd_boolean default_copy; |
252b5132 RH |
1208 | bfd_size_type symcount; |
1209 | struct xcoff_link_hash_entry **sym_hash; | |
1210 | asection **csect_cache; | |
3df13c4a | 1211 | unsigned int *lineno_counts; |
252b5132 RH |
1212 | bfd_size_type linesz; |
1213 | asection *o; | |
1214 | asection *last_real; | |
b34976b6 | 1215 | bfd_boolean keep_syms; |
252b5132 RH |
1216 | asection *csect; |
1217 | unsigned int csect_index; | |
1218 | asection *first_csect; | |
1219 | bfd_size_type symesz; | |
1220 | bfd_byte *esym; | |
1221 | bfd_byte *esym_end; | |
dc810e39 | 1222 | struct reloc_info_struct |
beb1bf64 TR |
1223 | { |
1224 | struct internal_reloc *relocs; | |
1225 | asection **csects; | |
1226 | bfd_byte *linenos; | |
1227 | } *reloc_info = NULL; | |
dc810e39 | 1228 | bfd_size_type amt; |
252b5132 RH |
1229 | |
1230 | keep_syms = obj_coff_keep_syms (abfd); | |
1231 | ||
1232 | if ((abfd->flags & DYNAMIC) != 0 | |
dc810e39 AM |
1233 | && ! info->static_link) |
1234 | { | |
1235 | if (! xcoff_link_add_dynamic_symbols (abfd, info)) | |
b34976b6 | 1236 | return FALSE; |
252b5132 RH |
1237 | } |
1238 | ||
116c20d2 | 1239 | /* Create the loader, toc, gl, ds and debug sections, if needed. */ |
b34976b6 | 1240 | if (! xcoff_link_create_extra_sections (abfd, info)) |
69f284c7 | 1241 | goto error_return; |
252b5132 RH |
1242 | |
1243 | if ((abfd->flags & DYNAMIC) != 0 | |
1244 | && ! info->static_link) | |
b34976b6 | 1245 | return TRUE; |
252b5132 RH |
1246 | |
1247 | n_tmask = coff_data (abfd)->local_n_tmask; | |
1248 | n_btshft = coff_data (abfd)->local_n_btshft; | |
1249 | ||
1250 | /* Define macros so that ISFCN, et. al., macros work correctly. */ | |
1251 | #define N_TMASK n_tmask | |
1252 | #define N_BTSHFT n_btshft | |
1253 | ||
1254 | if (info->keep_memory) | |
b34976b6 | 1255 | default_copy = FALSE; |
252b5132 | 1256 | else |
b34976b6 | 1257 | default_copy = TRUE; |
252b5132 | 1258 | |
dc810e39 | 1259 | symcount = obj_raw_syment_count (abfd); |
252b5132 RH |
1260 | |
1261 | /* We keep a list of the linker hash table entries that correspond | |
1262 | to each external symbol. */ | |
dc810e39 | 1263 | amt = symcount * sizeof (struct xcoff_link_hash_entry *); |
116c20d2 | 1264 | sym_hash = bfd_zalloc (abfd, amt); |
252b5132 RH |
1265 | if (sym_hash == NULL && symcount != 0) |
1266 | goto error_return; | |
1267 | coff_data (abfd)->sym_hashes = (struct coff_link_hash_entry **) sym_hash; | |
252b5132 RH |
1268 | |
1269 | /* Because of the weird stuff we are doing with XCOFF csects, we can | |
1270 | not easily determine which section a symbol is in, so we store | |
1271 | the information in the tdata for the input file. */ | |
dc810e39 | 1272 | amt = symcount * sizeof (asection *); |
116c20d2 | 1273 | csect_cache = bfd_zalloc (abfd, amt); |
252b5132 RH |
1274 | if (csect_cache == NULL && symcount != 0) |
1275 | goto error_return; | |
1276 | xcoff_data (abfd)->csects = csect_cache; | |
252b5132 | 1277 | |
3df13c4a RS |
1278 | /* We garbage-collect line-number information on a symbol-by-symbol |
1279 | basis, so we need to have quick access to the number of entries | |
1280 | per symbol. */ | |
1281 | amt = symcount * sizeof (unsigned int); | |
1282 | lineno_counts = bfd_zalloc (abfd, amt); | |
1283 | if (lineno_counts == NULL && symcount != 0) | |
1284 | goto error_return; | |
1285 | xcoff_data (abfd)->lineno_counts = lineno_counts; | |
1286 | ||
252b5132 RH |
1287 | /* While splitting sections into csects, we need to assign the |
1288 | relocs correctly. The relocs and the csects must both be in | |
1289 | order by VMA within a given section, so we handle this by | |
1290 | scanning along the relocs as we process the csects. We index | |
1291 | into reloc_info using the section target_index. */ | |
dc810e39 AM |
1292 | amt = abfd->section_count + 1; |
1293 | amt *= sizeof (struct reloc_info_struct); | |
116c20d2 | 1294 | reloc_info = bfd_zmalloc (amt); |
252b5132 RH |
1295 | if (reloc_info == NULL) |
1296 | goto error_return; | |
252b5132 RH |
1297 | |
1298 | /* Read in the relocs and line numbers for each section. */ | |
1299 | linesz = bfd_coff_linesz (abfd); | |
1300 | last_real = NULL; | |
dc810e39 AM |
1301 | for (o = abfd->sections; o != NULL; o = o->next) |
1302 | { | |
dc810e39 | 1303 | last_real = o; |
116c20d2 | 1304 | |
dc810e39 AM |
1305 | if ((o->flags & SEC_RELOC) != 0) |
1306 | { | |
dc810e39 | 1307 | reloc_info[o->target_index].relocs = |
116c20d2 | 1308 | xcoff_read_internal_relocs (abfd, o, TRUE, NULL, FALSE, NULL); |
dc810e39 AM |
1309 | amt = o->reloc_count; |
1310 | amt *= sizeof (asection *); | |
116c20d2 | 1311 | reloc_info[o->target_index].csects = bfd_zmalloc (amt); |
dc810e39 AM |
1312 | if (reloc_info[o->target_index].csects == NULL) |
1313 | goto error_return; | |
dc810e39 | 1314 | } |
beb1bf64 | 1315 | |
dc810e39 AM |
1316 | if ((info->strip == strip_none || info->strip == strip_some) |
1317 | && o->lineno_count > 0) | |
1318 | { | |
dc810e39 AM |
1319 | bfd_byte *linenos; |
1320 | ||
2bb3687b AM |
1321 | if (bfd_seek (abfd, o->line_filepos, SEEK_SET) != 0) |
1322 | goto error_return; | |
1323 | if (_bfd_mul_overflow (linesz, o->lineno_count, &amt)) | |
1324 | { | |
1325 | bfd_set_error (bfd_error_file_too_big); | |
1326 | goto error_return; | |
1327 | } | |
1328 | linenos = _bfd_malloc_and_read (abfd, amt, amt); | |
dc810e39 AM |
1329 | if (linenos == NULL) |
1330 | goto error_return; | |
1331 | reloc_info[o->target_index].linenos = linenos; | |
dc810e39 | 1332 | } |
252b5132 | 1333 | } |
beb1bf64 | 1334 | |
252b5132 | 1335 | /* Don't let the linker relocation routines discard the symbols. */ |
b34976b6 | 1336 | obj_coff_keep_syms (abfd) = TRUE; |
252b5132 RH |
1337 | |
1338 | csect = NULL; | |
1339 | csect_index = 0; | |
1340 | first_csect = NULL; | |
1341 | ||
1342 | symesz = bfd_coff_symesz (abfd); | |
1343 | BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); | |
1344 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
1345 | esym_end = esym + symcount * symesz; | |
252b5132 | 1346 | |
dc810e39 AM |
1347 | while (esym < esym_end) |
1348 | { | |
1349 | struct internal_syment sym; | |
1350 | union internal_auxent aux; | |
1351 | const char *name; | |
1352 | char buf[SYMNMLEN + 1]; | |
1353 | int smtyp; | |
dc810e39 AM |
1354 | asection *section; |
1355 | bfd_vma value; | |
1356 | struct xcoff_link_hash_entry *set_toc; | |
252b5132 | 1357 | |
116c20d2 | 1358 | bfd_coff_swap_sym_in (abfd, (void *) esym, (void *) &sym); |
dc810e39 AM |
1359 | |
1360 | /* In this pass we are only interested in symbols with csect | |
1361 | information. */ | |
8602d4fe | 1362 | if (!CSECT_SYM_P (sym.n_sclass)) |
dc810e39 | 1363 | { |
dc810e39 AM |
1364 | /* Set csect_cache, |
1365 | Normally csect is a .pr, .rw etc. created in the loop | |
1366 | If C_FILE or first time, handle special | |
252b5132 | 1367 | |
4cc02a02 | 1368 | Advance esym, sym_hash, csect_hash ptrs. */ |
5ccfed9b | 1369 | if (sym.n_sclass == C_FILE || sym.n_sclass == C_DWARF) |
4cc02a02 | 1370 | csect = NULL; |
dc810e39 AM |
1371 | if (csect != NULL) |
1372 | *csect_cache = csect; | |
5ccfed9b | 1373 | else if (first_csect == NULL |
07d6d2b8 | 1374 | || sym.n_sclass == C_FILE || sym.n_sclass == C_DWARF) |
dc810e39 AM |
1375 | *csect_cache = coff_section_from_bfd_index (abfd, sym.n_scnum); |
1376 | else | |
1377 | *csect_cache = NULL; | |
1378 | esym += (sym.n_numaux + 1) * symesz; | |
1379 | sym_hash += sym.n_numaux + 1; | |
1380 | csect_cache += sym.n_numaux + 1; | |
3df13c4a | 1381 | lineno_counts += sym.n_numaux + 1; |
dc810e39 AM |
1382 | |
1383 | continue; | |
1384 | } | |
1385 | ||
1386 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
1387 | ||
1388 | if (name == NULL) | |
1389 | goto error_return; | |
252b5132 RH |
1390 | |
1391 | /* If this symbol has line number information attached to it, | |
b34976b6 AM |
1392 | and we're not stripping it, count the number of entries and |
1393 | add them to the count for this csect. In the final link pass | |
1394 | we are going to attach line number information by symbol, | |
1395 | rather than by section, in order to more easily handle | |
1396 | garbage collection. */ | |
dc810e39 AM |
1397 | if ((info->strip == strip_none || info->strip == strip_some) |
1398 | && sym.n_numaux > 1 | |
1399 | && csect != NULL | |
1400 | && ISFCN (sym.n_type)) | |
1401 | { | |
dc810e39 | 1402 | union internal_auxent auxlin; |
252b5132 | 1403 | |
116c20d2 | 1404 | bfd_coff_swap_aux_in (abfd, (void *) (esym + symesz), |
dc810e39 | 1405 | sym.n_type, sym.n_sclass, |
116c20d2 | 1406 | 0, sym.n_numaux, (void *) &auxlin); |
dc810e39 AM |
1407 | |
1408 | if (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0) | |
1409 | { | |
1410 | asection *enclosing; | |
1411 | bfd_signed_vma linoff; | |
1412 | ||
1413 | enclosing = xcoff_section_data (abfd, csect)->enclosing; | |
1414 | if (enclosing == NULL) | |
1415 | { | |
4eca0228 | 1416 | _bfd_error_handler |
695344c0 | 1417 | /* xgettext:c-format */ |
871b3ab2 | 1418 | (_("%pB: `%s' has line numbers but no enclosing section"), |
d003868e | 1419 | abfd, name); |
dc810e39 AM |
1420 | bfd_set_error (bfd_error_bad_value); |
1421 | goto error_return; | |
1422 | } | |
1423 | linoff = (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr | |
1424 | - enclosing->line_filepos); | |
116c20d2 | 1425 | /* Explicit cast to bfd_signed_vma for compiler. */ |
dc810e39 AM |
1426 | if (linoff < (bfd_signed_vma) (enclosing->lineno_count * linesz)) |
1427 | { | |
1428 | struct internal_lineno lin; | |
1429 | bfd_byte *linpstart; | |
1430 | ||
1431 | linpstart = (reloc_info[enclosing->target_index].linenos | |
1432 | + linoff); | |
116c20d2 | 1433 | bfd_coff_swap_lineno_in (abfd, (void *) linpstart, (void *) &lin); |
dc810e39 AM |
1434 | if (lin.l_lnno == 0 |
1435 | && ((bfd_size_type) lin.l_addr.l_symndx | |
1436 | == ((esym | |
1437 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1438 | / symesz))) | |
1439 | { | |
1440 | bfd_byte *linpend, *linp; | |
1441 | ||
1442 | linpend = (reloc_info[enclosing->target_index].linenos | |
1443 | + enclosing->lineno_count * linesz); | |
1444 | for (linp = linpstart + linesz; | |
1445 | linp < linpend; | |
1446 | linp += linesz) | |
1447 | { | |
116c20d2 NC |
1448 | bfd_coff_swap_lineno_in (abfd, (void *) linp, |
1449 | (void *) &lin); | |
dc810e39 AM |
1450 | if (lin.l_lnno == 0) |
1451 | break; | |
1452 | } | |
3df13c4a | 1453 | *lineno_counts = (linp - linpstart) / linesz; |
dc810e39 AM |
1454 | /* The setting of line_filepos will only be |
1455 | useful if all the line number entries for a | |
1456 | csect are contiguous; this only matters for | |
1457 | error reporting. */ | |
1458 | if (csect->line_filepos == 0) | |
1459 | csect->line_filepos = | |
1460 | auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
1461 | } | |
1462 | } | |
beb1bf64 | 1463 | } |
beb1bf64 | 1464 | } |
252b5132 | 1465 | |
dc810e39 | 1466 | /* Pick up the csect auxiliary information. */ |
dc810e39 AM |
1467 | if (sym.n_numaux == 0) |
1468 | { | |
4eca0228 | 1469 | _bfd_error_handler |
695344c0 | 1470 | /* xgettext:c-format */ |
871b3ab2 | 1471 | (_("%pB: class %d symbol `%s' has no aux entries"), |
d003868e | 1472 | abfd, sym.n_sclass, name); |
dc810e39 AM |
1473 | bfd_set_error (bfd_error_bad_value); |
1474 | goto error_return; | |
1475 | } | |
beb1bf64 | 1476 | |
dc810e39 | 1477 | bfd_coff_swap_aux_in (abfd, |
116c20d2 | 1478 | (void *) (esym + symesz * sym.n_numaux), |
dc810e39 | 1479 | sym.n_type, sym.n_sclass, |
252b5132 | 1480 | sym.n_numaux - 1, sym.n_numaux, |
116c20d2 | 1481 | (void *) &aux); |
252b5132 RH |
1482 | |
1483 | smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); | |
1484 | ||
252b5132 RH |
1485 | section = NULL; |
1486 | value = 0; | |
1487 | set_toc = NULL; | |
1488 | ||
1489 | switch (smtyp) | |
1490 | { | |
1491 | default: | |
4eca0228 | 1492 | _bfd_error_handler |
695344c0 | 1493 | /* xgettext:c-format */ |
871b3ab2 | 1494 | (_("%pB: symbol `%s' has unrecognized csect type %d"), |
d003868e | 1495 | abfd, name, smtyp); |
252b5132 RH |
1496 | bfd_set_error (bfd_error_bad_value); |
1497 | goto error_return; | |
1498 | ||
1499 | case XTY_ER: | |
1500 | /* This is an external reference. */ | |
1501 | if (sym.n_sclass == C_HIDEXT | |
1502 | || sym.n_scnum != N_UNDEF | |
1503 | || aux.x_csect.x_scnlen.l != 0) | |
1504 | { | |
4eca0228 | 1505 | _bfd_error_handler |
695344c0 | 1506 | /* xgettext:c-format */ |
2dcf00ce AM |
1507 | (_("%pB: bad XTY_ER symbol `%s': class %d scnum %d " |
1508 | "scnlen %" PRId64), | |
d003868e | 1509 | abfd, name, sym.n_sclass, sym.n_scnum, |
2dcf00ce | 1510 | (int64_t) aux.x_csect.x_scnlen.l); |
252b5132 RH |
1511 | bfd_set_error (bfd_error_bad_value); |
1512 | goto error_return; | |
1513 | } | |
1514 | ||
1515 | /* An XMC_XO external reference is actually a reference to | |
b34976b6 | 1516 | an absolute location. */ |
252b5132 RH |
1517 | if (aux.x_csect.x_smclas != XMC_XO) |
1518 | section = bfd_und_section_ptr; | |
1519 | else | |
1520 | { | |
1521 | section = bfd_abs_section_ptr; | |
1522 | value = sym.n_value; | |
1523 | } | |
1524 | break; | |
1525 | ||
1526 | case XTY_SD: | |
252b5132 | 1527 | csect = NULL; |
dc810e39 | 1528 | csect_index = -(unsigned) 1; |
252b5132 RH |
1529 | |
1530 | /* When we see a TOC anchor, we record the TOC value. */ | |
1531 | if (aux.x_csect.x_smclas == XMC_TC0) | |
1532 | { | |
1533 | if (sym.n_sclass != C_HIDEXT | |
1534 | || aux.x_csect.x_scnlen.l != 0) | |
1535 | { | |
4eca0228 | 1536 | _bfd_error_handler |
695344c0 | 1537 | /* xgettext:c-format */ |
2dcf00ce AM |
1538 | (_("%pB: XMC_TC0 symbol `%s' is class %d scnlen %" PRId64), |
1539 | abfd, name, sym.n_sclass, (int64_t) aux.x_csect.x_scnlen.l); | |
252b5132 RH |
1540 | bfd_set_error (bfd_error_bad_value); |
1541 | goto error_return; | |
1542 | } | |
1543 | xcoff_data (abfd)->toc = sym.n_value; | |
1544 | } | |
1545 | ||
dc810e39 AM |
1546 | /* We must merge TOC entries for the same symbol. We can |
1547 | merge two TOC entries if they are both C_HIDEXT, they | |
1548 | both have the same name, they are both 4 or 8 bytes long, and | |
1549 | they both have a relocation table entry for an external | |
1550 | symbol with the same name. Unfortunately, this means | |
1551 | that we must look through the relocations. Ick. | |
1552 | ||
1553 | Logic for 32 bit vs 64 bit. | |
1554 | 32 bit has a csect length of 4 for TOC | |
1555 | 64 bit has a csect length of 8 for TOC | |
1556 | ||
1557 | The conditions to get past the if-check are not that bad. | |
1558 | They are what is used to create the TOC csects in the first | |
1559 | place. */ | |
1560 | if (aux.x_csect.x_smclas == XMC_TC | |
1561 | && sym.n_sclass == C_HIDEXT | |
f13a99db | 1562 | && info->output_bfd->xvec == abfd->xvec |
dc810e39 AM |
1563 | && ((bfd_xcoff_is_xcoff32 (abfd) |
1564 | && aux.x_csect.x_scnlen.l == 4) | |
1565 | || (bfd_xcoff_is_xcoff64 (abfd) | |
1566 | && aux.x_csect.x_scnlen.l == 8))) | |
1567 | { | |
1568 | asection *enclosing; | |
1569 | struct internal_reloc *relocs; | |
1570 | bfd_size_type relindx; | |
1571 | struct internal_reloc *rel; | |
252b5132 | 1572 | |
dc810e39 AM |
1573 | enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum); |
1574 | if (enclosing == NULL) | |
1575 | goto error_return; | |
252b5132 | 1576 | |
dc810e39 AM |
1577 | relocs = reloc_info[enclosing->target_index].relocs; |
1578 | amt = enclosing->reloc_count; | |
1579 | relindx = xcoff_find_reloc (relocs, amt, sym.n_value); | |
1580 | rel = relocs + relindx; | |
252b5132 | 1581 | |
dc810e39 AM |
1582 | /* 32 bit R_POS r_size is 31 |
1583 | 64 bit R_POS r_size is 63 */ | |
1584 | if (relindx < enclosing->reloc_count | |
1585 | && rel->r_vaddr == (bfd_vma) sym.n_value | |
1586 | && rel->r_type == R_POS | |
1587 | && ((bfd_xcoff_is_xcoff32 (abfd) | |
1588 | && rel->r_size == 31) | |
1589 | || (bfd_xcoff_is_xcoff64 (abfd) | |
1590 | && rel->r_size == 63))) | |
1591 | { | |
1592 | bfd_byte *erelsym; | |
1593 | ||
1594 | struct internal_syment relsym; | |
1595 | ||
1596 | erelsym = ((bfd_byte *) obj_coff_external_syms (abfd) | |
1597 | + rel->r_symndx * symesz); | |
116c20d2 | 1598 | bfd_coff_swap_sym_in (abfd, (void *) erelsym, (void *) &relsym); |
8602d4fe | 1599 | if (EXTERN_SYM_P (relsym.n_sclass)) |
dc810e39 AM |
1600 | { |
1601 | const char *relname; | |
1602 | char relbuf[SYMNMLEN + 1]; | |
b34976b6 | 1603 | bfd_boolean copy; |
dc810e39 AM |
1604 | struct xcoff_link_hash_entry *h; |
1605 | ||
1606 | /* At this point we know that the TOC entry is | |
1607 | for an externally visible symbol. */ | |
dc810e39 AM |
1608 | relname = _bfd_coff_internal_syment_name (abfd, &relsym, |
1609 | relbuf); | |
1610 | if (relname == NULL) | |
1611 | goto error_return; | |
1612 | ||
1613 | /* We only merge TOC entries if the TC name is | |
1614 | the same as the symbol name. This handles | |
1615 | the normal case, but not common cases like | |
1616 | SYM.P4 which gcc generates to store SYM + 4 | |
1617 | in the TOC. FIXME. */ | |
dc810e39 AM |
1618 | if (strcmp (name, relname) == 0) |
1619 | { | |
1620 | copy = (! info->keep_memory | |
1621 | || relsym._n._n_n._n_zeroes != 0 | |
1622 | || relsym._n._n_n._n_offset == 0); | |
1623 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
b34976b6 AM |
1624 | relname, TRUE, copy, |
1625 | FALSE); | |
dc810e39 AM |
1626 | if (h == NULL) |
1627 | goto error_return; | |
1628 | ||
1629 | /* At this point h->root.type could be | |
1630 | bfd_link_hash_new. That should be OK, | |
1631 | since we know for sure that we will come | |
1632 | across this symbol as we step through the | |
1633 | file. */ | |
1634 | ||
1635 | /* We store h in *sym_hash for the | |
1636 | convenience of the relocate_section | |
1637 | function. */ | |
1638 | *sym_hash = h; | |
1639 | ||
1640 | if (h->toc_section != NULL) | |
1641 | { | |
1642 | asection **rel_csects; | |
1643 | ||
1644 | /* We already have a TOC entry for this | |
1645 | symbol, so we can just ignore this | |
1646 | one. */ | |
1647 | rel_csects = | |
1648 | reloc_info[enclosing->target_index].csects; | |
1649 | rel_csects[relindx] = bfd_und_section_ptr; | |
1650 | break; | |
1651 | } | |
1652 | ||
1653 | /* We are about to create a TOC entry for | |
1654 | this symbol. */ | |
1655 | set_toc = h; | |
116c20d2 NC |
1656 | } |
1657 | } | |
1658 | } | |
1659 | } | |
252b5132 | 1660 | |
252b5132 | 1661 | { |
252b5132 RH |
1662 | asection *enclosing; |
1663 | ||
beb1bf64 TR |
1664 | /* We need to create a new section. We get the name from |
1665 | the csect storage mapping class, so that the linker can | |
1666 | accumulate similar csects together. */ | |
252b5132 | 1667 | |
beb1bf64 | 1668 | csect = bfd_xcoff_create_csect_from_smclas(abfd, &aux, name); |
dc810e39 | 1669 | if (NULL == csect) |
116c20d2 | 1670 | goto error_return; |
beb1bf64 | 1671 | |
dc810e39 AM |
1672 | /* The enclosing section is the main section : .data, .text |
1673 | or .bss that the csect is coming from. */ | |
252b5132 RH |
1674 | enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum); |
1675 | if (enclosing == NULL) | |
1676 | goto error_return; | |
beb1bf64 | 1677 | |
dc810e39 AM |
1678 | if (! bfd_is_abs_section (enclosing) |
1679 | && ((bfd_vma) sym.n_value < enclosing->vma | |
1680 | || ((bfd_vma) sym.n_value + aux.x_csect.x_scnlen.l | |
eea6121a | 1681 | > enclosing->vma + enclosing->size))) |
dc810e39 | 1682 | { |
4eca0228 | 1683 | _bfd_error_handler |
695344c0 | 1684 | /* xgettext:c-format */ |
871b3ab2 | 1685 | (_("%pB: csect `%s' not in enclosing section"), |
d003868e | 1686 | abfd, name); |
dc810e39 AM |
1687 | bfd_set_error (bfd_error_bad_value); |
1688 | goto error_return; | |
1689 | } | |
252b5132 RH |
1690 | csect->vma = sym.n_value; |
1691 | csect->filepos = (enclosing->filepos | |
1692 | + sym.n_value | |
1693 | - enclosing->vma); | |
eea6121a | 1694 | csect->size = aux.x_csect.x_scnlen.l; |
252b5132 RH |
1695 | csect->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; |
1696 | csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp); | |
1697 | ||
1698 | /* Record the enclosing section in the tdata for this new | |
1699 | section. */ | |
dc810e39 | 1700 | amt = sizeof (struct coff_section_tdata); |
116c20d2 | 1701 | csect->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
1702 | if (csect->used_by_bfd == NULL) |
1703 | goto error_return; | |
dc810e39 AM |
1704 | amt = sizeof (struct xcoff_section_tdata); |
1705 | coff_section_data (abfd, csect)->tdata = bfd_zalloc (abfd, amt); | |
252b5132 RH |
1706 | if (coff_section_data (abfd, csect)->tdata == NULL) |
1707 | goto error_return; | |
1708 | xcoff_section_data (abfd, csect)->enclosing = enclosing; | |
1709 | xcoff_section_data (abfd, csect)->lineno_count = | |
1710 | enclosing->lineno_count; | |
1711 | ||
dc810e39 AM |
1712 | if (enclosing->owner == abfd) |
1713 | { | |
1714 | struct internal_reloc *relocs; | |
1715 | bfd_size_type relindx; | |
1716 | struct internal_reloc *rel; | |
1717 | asection **rel_csect; | |
1718 | ||
1719 | relocs = reloc_info[enclosing->target_index].relocs; | |
1720 | amt = enclosing->reloc_count; | |
1721 | relindx = xcoff_find_reloc (relocs, amt, csect->vma); | |
1722 | ||
1723 | rel = relocs + relindx; | |
1724 | rel_csect = (reloc_info[enclosing->target_index].csects | |
1725 | + relindx); | |
1726 | ||
1727 | csect->rel_filepos = (enclosing->rel_filepos | |
1728 | + relindx * bfd_coff_relsz (abfd)); | |
1729 | while (relindx < enclosing->reloc_count | |
1730 | && *rel_csect == NULL | |
eea6121a | 1731 | && rel->r_vaddr < csect->vma + csect->size) |
dc810e39 | 1732 | { |
beb1bf64 | 1733 | |
dc810e39 AM |
1734 | *rel_csect = csect; |
1735 | csect->flags |= SEC_RELOC; | |
1736 | ++csect->reloc_count; | |
1737 | ++relindx; | |
1738 | ++rel; | |
1739 | ++rel_csect; | |
1740 | } | |
252b5132 RH |
1741 | } |
1742 | ||
1743 | /* There are a number of other fields and section flags | |
1744 | which we do not bother to set. */ | |
1745 | ||
1746 | csect_index = ((esym | |
1747 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1748 | / symesz); | |
1749 | ||
1750 | xcoff_section_data (abfd, csect)->first_symndx = csect_index; | |
1751 | ||
1752 | if (first_csect == NULL) | |
1753 | first_csect = csect; | |
1754 | ||
8602d4fe | 1755 | /* If this symbol is external, we treat it as starting at the |
252b5132 | 1756 | beginning of the newly created section. */ |
8602d4fe | 1757 | if (EXTERN_SYM_P (sym.n_sclass)) |
252b5132 RH |
1758 | { |
1759 | section = csect; | |
1760 | value = 0; | |
1761 | } | |
1762 | ||
1763 | /* If this is a TOC section for a symbol, record it. */ | |
1764 | if (set_toc != NULL) | |
1765 | set_toc->toc_section = csect; | |
1766 | } | |
1767 | break; | |
1768 | ||
1769 | case XTY_LD: | |
1770 | /* This is a label definition. The x_scnlen field is the | |
dc810e39 | 1771 | symbol index of the csect. Usually the XTY_LD symbol will |
8df8c619 TR |
1772 | follow its appropriate XTY_SD symbol. The .set pseudo op can |
1773 | cause the XTY_LD to not follow the XTY_SD symbol. */ | |
252b5132 | 1774 | { |
b34976b6 | 1775 | bfd_boolean bad; |
252b5132 | 1776 | |
b34976b6 | 1777 | bad = FALSE; |
252b5132 RH |
1778 | if (aux.x_csect.x_scnlen.l < 0 |
1779 | || (aux.x_csect.x_scnlen.l | |
1780 | >= esym - (bfd_byte *) obj_coff_external_syms (abfd))) | |
b34976b6 | 1781 | bad = TRUE; |
252b5132 RH |
1782 | if (! bad) |
1783 | { | |
1784 | section = xcoff_data (abfd)->csects[aux.x_csect.x_scnlen.l]; | |
1785 | if (section == NULL | |
1786 | || (section->flags & SEC_HAS_CONTENTS) == 0) | |
b34976b6 | 1787 | bad = TRUE; |
252b5132 RH |
1788 | } |
1789 | if (bad) | |
1790 | { | |
4eca0228 | 1791 | _bfd_error_handler |
695344c0 | 1792 | /* xgettext:c-format */ |
871b3ab2 | 1793 | (_("%pB: misplaced XTY_LD `%s'"), |
d003868e | 1794 | abfd, name); |
252b5132 RH |
1795 | bfd_set_error (bfd_error_bad_value); |
1796 | goto error_return; | |
1797 | } | |
07d6d2b8 | 1798 | csect = section; |
252b5132 RH |
1799 | value = sym.n_value - csect->vma; |
1800 | } | |
1801 | break; | |
1802 | ||
1803 | case XTY_CM: | |
1804 | /* This is an unitialized csect. We could base the name on | |
b34976b6 AM |
1805 | the storage mapping class, but we don't bother except for |
1806 | an XMC_TD symbol. If this csect is externally visible, | |
1807 | it is a common symbol. We put XMC_TD symbols in sections | |
1808 | named .tocbss, and rely on the linker script to put that | |
1809 | in the TOC area. */ | |
252b5132 | 1810 | |
dc810e39 AM |
1811 | if (aux.x_csect.x_smclas == XMC_TD) |
1812 | { | |
1813 | /* The linker script puts the .td section in the data | |
1814 | section after the .tc section. */ | |
117ed4f8 AM |
1815 | csect = bfd_make_section_anyway_with_flags (abfd, ".td", |
1816 | SEC_ALLOC); | |
dc810e39 AM |
1817 | } |
1818 | else | |
117ed4f8 AM |
1819 | csect = bfd_make_section_anyway_with_flags (abfd, ".bss", |
1820 | SEC_ALLOC); | |
116c20d2 | 1821 | |
252b5132 RH |
1822 | if (csect == NULL) |
1823 | goto error_return; | |
1824 | csect->vma = sym.n_value; | |
eea6121a | 1825 | csect->size = aux.x_csect.x_scnlen.l; |
252b5132 RH |
1826 | csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp); |
1827 | /* There are a number of other fields and section flags | |
1828 | which we do not bother to set. */ | |
1829 | ||
1830 | csect_index = ((esym | |
1831 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1832 | / symesz); | |
1833 | ||
dc810e39 | 1834 | amt = sizeof (struct coff_section_tdata); |
116c20d2 | 1835 | csect->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
1836 | if (csect->used_by_bfd == NULL) |
1837 | goto error_return; | |
dc810e39 AM |
1838 | amt = sizeof (struct xcoff_section_tdata); |
1839 | coff_section_data (abfd, csect)->tdata = bfd_zalloc (abfd, amt); | |
252b5132 RH |
1840 | if (coff_section_data (abfd, csect)->tdata == NULL) |
1841 | goto error_return; | |
1842 | xcoff_section_data (abfd, csect)->first_symndx = csect_index; | |
1843 | ||
1844 | if (first_csect == NULL) | |
1845 | first_csect = csect; | |
1846 | ||
8602d4fe | 1847 | if (EXTERN_SYM_P (sym.n_sclass)) |
252b5132 RH |
1848 | { |
1849 | csect->flags |= SEC_IS_COMMON; | |
eea6121a | 1850 | csect->size = 0; |
252b5132 RH |
1851 | section = csect; |
1852 | value = aux.x_csect.x_scnlen.l; | |
1853 | } | |
1854 | ||
1855 | break; | |
1856 | } | |
1857 | ||
1858 | /* Check for magic symbol names. */ | |
dc810e39 AM |
1859 | if ((smtyp == XTY_SD || smtyp == XTY_CM) |
1860 | && aux.x_csect.x_smclas != XMC_TC | |
1861 | && aux.x_csect.x_smclas != XMC_TD) | |
1862 | { | |
dc810e39 AM |
1863 | int i = -1; |
1864 | ||
1865 | if (name[0] == '_') | |
1866 | { | |
1867 | if (strcmp (name, "_text") == 0) | |
1868 | i = XCOFF_SPECIAL_SECTION_TEXT; | |
1869 | else if (strcmp (name, "_etext") == 0) | |
1870 | i = XCOFF_SPECIAL_SECTION_ETEXT; | |
1871 | else if (strcmp (name, "_data") == 0) | |
1872 | i = XCOFF_SPECIAL_SECTION_DATA; | |
1873 | else if (strcmp (name, "_edata") == 0) | |
1874 | i = XCOFF_SPECIAL_SECTION_EDATA; | |
1875 | else if (strcmp (name, "_end") == 0) | |
1876 | i = XCOFF_SPECIAL_SECTION_END; | |
1877 | } | |
1878 | else if (name[0] == 'e' && strcmp (name, "end") == 0) | |
116c20d2 | 1879 | i = XCOFF_SPECIAL_SECTION_END2; |
dc810e39 AM |
1880 | |
1881 | if (i != -1) | |
116c20d2 | 1882 | xcoff_hash_table (info)->special_sections[i] = csect; |
dc810e39 | 1883 | } |
252b5132 RH |
1884 | |
1885 | /* Now we have enough information to add the symbol to the | |
b34976b6 | 1886 | linker hash table. */ |
252b5132 | 1887 | |
8602d4fe | 1888 | if (EXTERN_SYM_P (sym.n_sclass)) |
252b5132 | 1889 | { |
0eb32b6e | 1890 | bfd_boolean copy, ok; |
8602d4fe | 1891 | flagword flags; |
252b5132 RH |
1892 | |
1893 | BFD_ASSERT (section != NULL); | |
1894 | ||
1895 | /* We must copy the name into memory if we got it from the | |
b34976b6 | 1896 | syment itself, rather than the string table. */ |
252b5132 RH |
1897 | copy = default_copy; |
1898 | if (sym._n._n_n._n_zeroes != 0 | |
1899 | || sym._n._n_n._n_offset == 0) | |
b34976b6 | 1900 | copy = TRUE; |
252b5132 | 1901 | |
94313f36 RS |
1902 | /* Ignore global linkage code when linking statically. */ |
1903 | if (info->static_link | |
1904 | && (smtyp == XTY_SD || smtyp == XTY_LD) | |
1905 | && aux.x_csect.x_smclas == XMC_GL) | |
1906 | { | |
1907 | section = bfd_und_section_ptr; | |
1908 | value = 0; | |
1909 | } | |
1910 | ||
252b5132 RH |
1911 | /* The AIX linker appears to only detect multiple symbol |
1912 | definitions when there is a reference to the symbol. If | |
1913 | a symbol is defined multiple times, and the only | |
1914 | references are from the same object file, the AIX linker | |
1915 | appears to permit it. It does not merge the different | |
1916 | definitions, but handles them independently. On the | |
1917 | other hand, if there is a reference, the linker reports | |
1918 | an error. | |
1919 | ||
1920 | This matters because the AIX <net/net_globals.h> header | |
1921 | file actually defines an initialized array, so we have to | |
1922 | actually permit that to work. | |
1923 | ||
1924 | Just to make matters even more confusing, the AIX linker | |
1925 | appears to permit multiple symbol definitions whenever | |
1926 | the second definition is in an archive rather than an | |
1927 | object file. This may be a consequence of the manner in | |
1928 | which it handles archives: I think it may load the entire | |
1929 | archive in as separate csects, and then let garbage | |
1930 | collection discard symbols. | |
1931 | ||
1932 | We also have to handle the case of statically linking a | |
1933 | shared object, which will cause symbol redefinitions, | |
1934 | although this is an easier case to detect. */ | |
07d6d2b8 | 1935 | else if (info->output_bfd->xvec == abfd->xvec) |
252b5132 RH |
1936 | { |
1937 | if (! bfd_is_und_section (section)) | |
116c20d2 NC |
1938 | *sym_hash = xcoff_link_hash_lookup (xcoff_hash_table (info), |
1939 | name, TRUE, copy, FALSE); | |
252b5132 | 1940 | else |
116c20d2 NC |
1941 | /* Make a copy of the symbol name to prevent problems with |
1942 | merging symbols. */ | |
1943 | *sym_hash = ((struct xcoff_link_hash_entry *) | |
1944 | bfd_wrapped_link_hash_lookup (abfd, info, name, | |
1945 | TRUE, TRUE, FALSE)); | |
1946 | ||
252b5132 RH |
1947 | if (*sym_hash == NULL) |
1948 | goto error_return; | |
1949 | if (((*sym_hash)->root.type == bfd_link_hash_defined | |
1950 | || (*sym_hash)->root.type == bfd_link_hash_defweak) | |
1951 | && ! bfd_is_und_section (section) | |
1952 | && ! bfd_is_com_section (section)) | |
1953 | { | |
1954 | /* This is a second definition of a defined symbol. */ | |
94313f36 RS |
1955 | if (((*sym_hash)->flags & XCOFF_DEF_REGULAR) == 0 |
1956 | && ((*sym_hash)->flags & XCOFF_DEF_DYNAMIC) != 0) | |
252b5132 RH |
1957 | { |
1958 | /* The existing symbol is from a shared library. | |
b34976b6 | 1959 | Replace it. */ |
252b5132 RH |
1960 | (*sym_hash)->root.type = bfd_link_hash_undefined; |
1961 | (*sym_hash)->root.u.undef.abfd = | |
1962 | (*sym_hash)->root.u.def.section->owner; | |
1963 | } | |
1964 | else if (abfd->my_archive != NULL) | |
1965 | { | |
1966 | /* This is a redefinition in an object contained | |
b34976b6 AM |
1967 | in an archive. Just ignore it. See the |
1968 | comment above. */ | |
252b5132 RH |
1969 | section = bfd_und_section_ptr; |
1970 | value = 0; | |
1971 | } | |
8602d4fe RS |
1972 | else if (sym.n_sclass == C_AIX_WEAKEXT |
1973 | || (*sym_hash)->root.type == bfd_link_hash_defweak) | |
1974 | { | |
1975 | /* At least one of the definitions is weak. | |
1976 | Allow the normal rules to take effect. */ | |
1977 | } | |
f6e332e6 | 1978 | else if ((*sym_hash)->root.u.undef.next != NULL |
252b5132 RH |
1979 | || info->hash->undefs_tail == &(*sym_hash)->root) |
1980 | { | |
1981 | /* This symbol has been referenced. In this | |
b34976b6 AM |
1982 | case, we just continue and permit the |
1983 | multiple definition error. See the comment | |
1984 | above about the behaviour of the AIX linker. */ | |
252b5132 RH |
1985 | } |
1986 | else if ((*sym_hash)->smclas == aux.x_csect.x_smclas) | |
1987 | { | |
1988 | /* The symbols are both csects of the same | |
b34976b6 AM |
1989 | class. There is at least a chance that this |
1990 | is a semi-legitimate redefinition. */ | |
252b5132 RH |
1991 | section = bfd_und_section_ptr; |
1992 | value = 0; | |
1993 | (*sym_hash)->flags |= XCOFF_MULTIPLY_DEFINED; | |
1994 | } | |
1995 | } | |
1996 | else if (((*sym_hash)->flags & XCOFF_MULTIPLY_DEFINED) != 0 | |
8602d4fe | 1997 | && (*sym_hash)->root.type == bfd_link_hash_defined |
252b5132 RH |
1998 | && (bfd_is_und_section (section) |
1999 | || bfd_is_com_section (section))) | |
2000 | { | |
2001 | /* This is a reference to a multiply defined symbol. | |
2002 | Report the error now. See the comment above | |
2003 | about the behaviour of the AIX linker. We could | |
2004 | also do this with warning symbols, but I'm not | |
2005 | sure the XCOFF linker is wholly prepared to | |
2006 | handle them, and that would only be a warning, | |
2007 | not an error. */ | |
1a72702b AM |
2008 | (*info->callbacks->multiple_definition) (info, |
2009 | &(*sym_hash)->root, | |
2010 | NULL, NULL, | |
2011 | (bfd_vma) 0); | |
252b5132 RH |
2012 | /* Try not to give this error too many times. */ |
2013 | (*sym_hash)->flags &= ~XCOFF_MULTIPLY_DEFINED; | |
2014 | } | |
2015 | } | |
2016 | ||
2017 | /* _bfd_generic_link_add_one_symbol may call the linker to | |
2018 | generate an error message, and the linker may try to read | |
2019 | the symbol table to give a good error. Right now, the | |
2020 | line numbers are in an inconsistent state, since they are | |
2021 | counted both in the real sections and in the new csects. | |
2022 | We need to leave the count in the real sections so that | |
2023 | the linker can report the line number of the error | |
2024 | correctly, so temporarily clobber the link to the csects | |
2025 | so that the linker will not try to read the line numbers | |
2026 | a second time from the csects. */ | |
2027 | BFD_ASSERT (last_real->next == first_csect); | |
2028 | last_real->next = NULL; | |
8602d4fe | 2029 | flags = (sym.n_sclass == C_EXT ? BSF_GLOBAL : BSF_WEAK); |
0eb32b6e AM |
2030 | ok = (_bfd_generic_link_add_one_symbol |
2031 | (info, abfd, name, flags, section, value, NULL, copy, TRUE, | |
2032 | (struct bfd_link_hash_entry **) sym_hash)); | |
252b5132 | 2033 | last_real->next = first_csect; |
0eb32b6e AM |
2034 | if (!ok) |
2035 | goto error_return; | |
252b5132 RH |
2036 | |
2037 | if (smtyp == XTY_CM) | |
2038 | { | |
2039 | if ((*sym_hash)->root.type != bfd_link_hash_common | |
2040 | || (*sym_hash)->root.u.c.p->section != csect) | |
116c20d2 NC |
2041 | /* We don't need the common csect we just created. */ |
2042 | csect->size = 0; | |
252b5132 | 2043 | else |
116c20d2 NC |
2044 | (*sym_hash)->root.u.c.p->alignment_power |
2045 | = csect->alignment_power; | |
252b5132 RH |
2046 | } |
2047 | ||
07d6d2b8 | 2048 | if (info->output_bfd->xvec == abfd->xvec) |
252b5132 RH |
2049 | { |
2050 | int flag; | |
2051 | ||
94313f36 RS |
2052 | if (smtyp == XTY_ER |
2053 | || smtyp == XTY_CM | |
2054 | || section == bfd_und_section_ptr) | |
252b5132 RH |
2055 | flag = XCOFF_REF_REGULAR; |
2056 | else | |
2057 | flag = XCOFF_DEF_REGULAR; | |
2058 | (*sym_hash)->flags |= flag; | |
2059 | ||
2060 | if ((*sym_hash)->smclas == XMC_UA | |
2061 | || flag == XCOFF_DEF_REGULAR) | |
2062 | (*sym_hash)->smclas = aux.x_csect.x_smclas; | |
2063 | } | |
2064 | } | |
2065 | ||
4cc02a02 RS |
2066 | if (smtyp == XTY_ER) |
2067 | *csect_cache = section; | |
2068 | else | |
2069 | { | |
2070 | *csect_cache = csect; | |
2071 | if (csect != NULL) | |
2072 | xcoff_section_data (abfd, csect)->last_symndx | |
2073 | = (esym - (bfd_byte *) obj_coff_external_syms (abfd)) / symesz; | |
2074 | } | |
252b5132 RH |
2075 | |
2076 | esym += (sym.n_numaux + 1) * symesz; | |
2077 | sym_hash += sym.n_numaux + 1; | |
2078 | csect_cache += sym.n_numaux + 1; | |
3df13c4a | 2079 | lineno_counts += sym.n_numaux + 1; |
252b5132 RH |
2080 | } |
2081 | ||
2082 | BFD_ASSERT (last_real == NULL || last_real->next == first_csect); | |
2083 | ||
2084 | /* Make sure that we have seen all the relocs. */ | |
2085 | for (o = abfd->sections; o != first_csect; o = o->next) | |
2086 | { | |
5ccfed9b | 2087 | /* Debugging sections have no csects. */ |
fd361982 | 2088 | if (bfd_section_flags (o) & SEC_DEBUGGING) |
07d6d2b8 | 2089 | continue; |
5ccfed9b | 2090 | |
252b5132 RH |
2091 | /* Reset the section size and the line number count, since the |
2092 | data is now attached to the csects. Don't reset the size of | |
2093 | the .debug section, since we need to read it below in | |
2094 | bfd_xcoff_size_dynamic_sections. */ | |
fd361982 | 2095 | if (strcmp (bfd_section_name (o), ".debug") != 0) |
eea6121a | 2096 | o->size = 0; |
252b5132 RH |
2097 | o->lineno_count = 0; |
2098 | ||
2099 | if ((o->flags & SEC_RELOC) != 0) | |
2100 | { | |
2101 | bfd_size_type i; | |
2102 | struct internal_reloc *rel; | |
2103 | asection **rel_csect; | |
2104 | ||
2105 | rel = reloc_info[o->target_index].relocs; | |
2106 | rel_csect = reloc_info[o->target_index].csects; | |
beb1bf64 | 2107 | |
252b5132 RH |
2108 | for (i = 0; i < o->reloc_count; i++, rel++, rel_csect++) |
2109 | { | |
2110 | if (*rel_csect == NULL) | |
2111 | { | |
4eca0228 | 2112 | _bfd_error_handler |
695344c0 | 2113 | /* xgettext:c-format */ |
2dcf00ce AM |
2114 | (_("%pB: reloc %s:%" PRId64 " not in csect"), |
2115 | abfd, o->name, (int64_t) i); | |
252b5132 RH |
2116 | bfd_set_error (bfd_error_bad_value); |
2117 | goto error_return; | |
2118 | } | |
2119 | ||
858ef0ce RS |
2120 | /* We identify all function symbols that are the target |
2121 | of a relocation, so that we can create glue code for | |
2122 | functions imported from dynamic objects. */ | |
07d6d2b8 | 2123 | if (info->output_bfd->xvec == abfd->xvec |
252b5132 | 2124 | && *rel_csect != bfd_und_section_ptr |
252b5132 RH |
2125 | && obj_xcoff_sym_hashes (abfd)[rel->r_symndx] != NULL) |
2126 | { | |
2127 | struct xcoff_link_hash_entry *h; | |
2128 | ||
2129 | h = obj_xcoff_sym_hashes (abfd)[rel->r_symndx]; | |
252b5132 | 2130 | /* If the symbol name starts with a period, it is |
b34976b6 AM |
2131 | the code of a function. If the symbol is |
2132 | currently undefined, then add an undefined symbol | |
2133 | for the function descriptor. This should do no | |
2134 | harm, because any regular object that defines the | |
2135 | function should also define the function | |
2136 | descriptor. It helps, because it means that we | |
2137 | will identify the function descriptor with a | |
2138 | dynamic object if a dynamic object defines it. */ | |
252b5132 RH |
2139 | if (h->root.root.string[0] == '.' |
2140 | && h->descriptor == NULL) | |
2141 | { | |
2142 | struct xcoff_link_hash_entry *hds; | |
14a793b2 | 2143 | struct bfd_link_hash_entry *bh; |
252b5132 RH |
2144 | |
2145 | hds = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
2146 | h->root.root.string + 1, | |
b34976b6 | 2147 | TRUE, FALSE, TRUE); |
252b5132 RH |
2148 | if (hds == NULL) |
2149 | goto error_return; | |
2150 | if (hds->root.type == bfd_link_hash_new) | |
2151 | { | |
14a793b2 | 2152 | bh = &hds->root; |
252b5132 RH |
2153 | if (! (_bfd_generic_link_add_one_symbol |
2154 | (info, abfd, hds->root.root.string, | |
2155 | (flagword) 0, bfd_und_section_ptr, | |
116c20d2 | 2156 | (bfd_vma) 0, NULL, FALSE, |
b34976b6 | 2157 | TRUE, &bh))) |
252b5132 | 2158 | goto error_return; |
14a793b2 | 2159 | hds = (struct xcoff_link_hash_entry *) bh; |
252b5132 RH |
2160 | } |
2161 | hds->flags |= XCOFF_DESCRIPTOR; | |
858ef0ce | 2162 | BFD_ASSERT ((h->flags & XCOFF_DESCRIPTOR) == 0); |
252b5132 RH |
2163 | hds->descriptor = h; |
2164 | h->descriptor = hds; | |
2165 | } | |
858ef0ce RS |
2166 | if (h->root.root.string[0] == '.') |
2167 | h->flags |= XCOFF_CALLED; | |
252b5132 RH |
2168 | } |
2169 | } | |
2170 | ||
2171 | free (reloc_info[o->target_index].csects); | |
2172 | reloc_info[o->target_index].csects = NULL; | |
2173 | ||
2174 | /* Reset SEC_RELOC and the reloc_count, since the reloc | |
2175 | information is now attached to the csects. */ | |
beb1bf64 | 2176 | o->flags &=~ SEC_RELOC; |
252b5132 RH |
2177 | o->reloc_count = 0; |
2178 | ||
2179 | /* If we are not keeping memory, free the reloc information. */ | |
2180 | if (! info->keep_memory | |
2181 | && coff_section_data (abfd, o) != NULL | |
2182 | && coff_section_data (abfd, o)->relocs != NULL | |
2183 | && ! coff_section_data (abfd, o)->keep_relocs) | |
2184 | { | |
2185 | free (coff_section_data (abfd, o)->relocs); | |
2186 | coff_section_data (abfd, o)->relocs = NULL; | |
2187 | } | |
2188 | } | |
2189 | ||
2190 | /* Free up the line numbers. FIXME: We could cache these | |
b34976b6 | 2191 | somewhere for the final link, to avoid reading them again. */ |
252b5132 RH |
2192 | if (reloc_info[o->target_index].linenos != NULL) |
2193 | { | |
2194 | free (reloc_info[o->target_index].linenos); | |
2195 | reloc_info[o->target_index].linenos = NULL; | |
2196 | } | |
2197 | } | |
2198 | ||
2199 | free (reloc_info); | |
2200 | ||
2201 | obj_coff_keep_syms (abfd) = keep_syms; | |
2202 | ||
b34976b6 | 2203 | return TRUE; |
252b5132 RH |
2204 | |
2205 | error_return: | |
2206 | if (reloc_info != NULL) | |
2207 | { | |
2208 | for (o = abfd->sections; o != NULL; o = o->next) | |
2209 | { | |
2210 | if (reloc_info[o->target_index].csects != NULL) | |
2211 | free (reloc_info[o->target_index].csects); | |
2212 | if (reloc_info[o->target_index].linenos != NULL) | |
2213 | free (reloc_info[o->target_index].linenos); | |
2214 | } | |
dc810e39 | 2215 | free (reloc_info); |
252b5132 RH |
2216 | } |
2217 | obj_coff_keep_syms (abfd) = keep_syms; | |
b34976b6 | 2218 | return FALSE; |
252b5132 RH |
2219 | } |
2220 | ||
2221 | #undef N_TMASK | |
2222 | #undef N_BTSHFT | |
2223 | ||
116c20d2 | 2224 | /* Add symbols from an XCOFF object file. */ |
252b5132 | 2225 | |
b34976b6 | 2226 | static bfd_boolean |
116c20d2 | 2227 | xcoff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2228 | { |
116c20d2 NC |
2229 | if (! _bfd_coff_get_external_symbols (abfd)) |
2230 | return FALSE; | |
2231 | if (! xcoff_link_add_symbols (abfd, info)) | |
2232 | return FALSE; | |
2233 | if (! info->keep_memory) | |
252b5132 | 2234 | { |
116c20d2 NC |
2235 | if (! _bfd_coff_free_symbols (abfd)) |
2236 | return FALSE; | |
252b5132 | 2237 | } |
116c20d2 NC |
2238 | return TRUE; |
2239 | } | |
dc810e39 | 2240 | |
116c20d2 NC |
2241 | /* Look through the loader symbols to see if this dynamic object |
2242 | should be included in the link. The native linker uses the loader | |
2243 | symbols, not the normal symbol table, so we do too. */ | |
2244 | ||
2245 | static bfd_boolean | |
2246 | xcoff_link_check_dynamic_ar_symbols (bfd *abfd, | |
2247 | struct bfd_link_info *info, | |
5d3236ee DK |
2248 | bfd_boolean *pneeded, |
2249 | bfd **subsbfd) | |
116c20d2 NC |
2250 | { |
2251 | asection *lsec; | |
2252 | bfd_byte *contents; | |
2253 | struct internal_ldhdr ldhdr; | |
2254 | const char *strings; | |
2255 | bfd_byte *elsym, *elsymend; | |
2256 | ||
2257 | *pneeded = FALSE; | |
252b5132 | 2258 | |
252b5132 RH |
2259 | lsec = bfd_get_section_by_name (abfd, ".loader"); |
2260 | if (lsec == NULL) | |
116c20d2 NC |
2261 | /* There are no symbols, so don't try to include it. */ |
2262 | return TRUE; | |
beb1bf64 | 2263 | |
252b5132 | 2264 | if (! xcoff_get_section_contents (abfd, lsec)) |
b34976b6 | 2265 | return FALSE; |
beb1bf64 | 2266 | contents = coff_section_data (abfd, lsec)->contents; |
252b5132 | 2267 | |
beb1bf64 TR |
2268 | bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); |
2269 | ||
2270 | strings = (char *) contents + ldhdr.l_stoff; | |
2271 | ||
116c20d2 | 2272 | elsym = contents + bfd_xcoff_loader_symbol_offset (abfd, &ldhdr); |
252b5132 | 2273 | |
116c20d2 NC |
2274 | elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz (abfd); |
2275 | for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz (abfd)) | |
252b5132 RH |
2276 | { |
2277 | struct internal_ldsym ldsym; | |
2278 | char nambuf[SYMNMLEN + 1]; | |
2279 | const char *name; | |
116c20d2 | 2280 | struct bfd_link_hash_entry *h; |
252b5132 | 2281 | |
beb1bf64 | 2282 | bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym); |
252b5132 RH |
2283 | |
2284 | /* We are only interested in exported symbols. */ | |
2285 | if ((ldsym.l_smtype & L_EXPORT) == 0) | |
2286 | continue; | |
2287 | ||
2288 | if (ldsym._l._l_l._l_zeroes == 0) | |
2289 | name = strings + ldsym._l._l_l._l_offset; | |
2290 | else | |
2291 | { | |
2292 | memcpy (nambuf, ldsym._l._l_name, SYMNMLEN); | |
2293 | nambuf[SYMNMLEN] = '\0'; | |
2294 | name = nambuf; | |
2295 | } | |
2296 | ||
116c20d2 | 2297 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
252b5132 | 2298 | |
116c20d2 NC |
2299 | /* We are only interested in symbols that are currently |
2300 | undefined. At this point we know that we are using an XCOFF | |
2301 | hash table. */ | |
2302 | if (h != NULL | |
2303 | && h->type == bfd_link_hash_undefined | |
2304 | && (((struct xcoff_link_hash_entry *) h)->flags | |
2305 | & XCOFF_DEF_DYNAMIC) == 0) | |
252b5132 | 2306 | { |
0e144ba7 AM |
2307 | if (!(*info->callbacks |
2308 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
b95a0a31 | 2309 | continue; |
116c20d2 NC |
2310 | *pneeded = TRUE; |
2311 | return TRUE; | |
252b5132 | 2312 | } |
116c20d2 | 2313 | } |
252b5132 | 2314 | |
116c20d2 NC |
2315 | /* We do not need this shared object. */ |
2316 | if (contents != NULL && ! coff_section_data (abfd, lsec)->keep_contents) | |
2317 | { | |
2318 | free (coff_section_data (abfd, lsec)->contents); | |
2319 | coff_section_data (abfd, lsec)->contents = NULL; | |
2320 | } | |
252b5132 | 2321 | |
116c20d2 NC |
2322 | return TRUE; |
2323 | } | |
252b5132 | 2324 | |
116c20d2 NC |
2325 | /* Look through the symbols to see if this object file should be |
2326 | included in the link. */ | |
252b5132 | 2327 | |
116c20d2 NC |
2328 | static bfd_boolean |
2329 | xcoff_link_check_ar_symbols (bfd *abfd, | |
2330 | struct bfd_link_info *info, | |
5d3236ee DK |
2331 | bfd_boolean *pneeded, |
2332 | bfd **subsbfd) | |
116c20d2 NC |
2333 | { |
2334 | bfd_size_type symesz; | |
2335 | bfd_byte *esym; | |
2336 | bfd_byte *esym_end; | |
252b5132 | 2337 | |
116c20d2 | 2338 | *pneeded = FALSE; |
252b5132 | 2339 | |
116c20d2 NC |
2340 | if ((abfd->flags & DYNAMIC) != 0 |
2341 | && ! info->static_link | |
f13a99db | 2342 | && info->output_bfd->xvec == abfd->xvec) |
5d3236ee | 2343 | return xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded, subsbfd); |
252b5132 | 2344 | |
116c20d2 NC |
2345 | symesz = bfd_coff_symesz (abfd); |
2346 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
2347 | esym_end = esym + obj_raw_syment_count (abfd) * symesz; | |
2348 | while (esym < esym_end) | |
2349 | { | |
2350 | struct internal_syment sym; | |
252b5132 | 2351 | |
116c20d2 | 2352 | bfd_coff_swap_sym_in (abfd, (void *) esym, (void *) &sym); |
252b5132 | 2353 | |
8602d4fe | 2354 | if (EXTERN_SYM_P (sym.n_sclass) && sym.n_scnum != N_UNDEF) |
116c20d2 NC |
2355 | { |
2356 | const char *name; | |
2357 | char buf[SYMNMLEN + 1]; | |
2358 | struct bfd_link_hash_entry *h; | |
252b5132 | 2359 | |
116c20d2 NC |
2360 | /* This symbol is externally visible, and is defined by this |
2361 | object file. */ | |
2362 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
2363 | ||
2364 | if (name == NULL) | |
2365 | return FALSE; | |
2366 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
2367 | ||
2368 | /* We are only interested in symbols that are currently | |
2369 | undefined. If a symbol is currently known to be common, | |
2370 | XCOFF linkers do not bring in an object file which | |
2371 | defines it. We also don't bring in symbols to satisfy | |
2372 | undefined references in shared objects. */ | |
2373 | if (h != NULL | |
2374 | && h->type == bfd_link_hash_undefined | |
07d6d2b8 | 2375 | && (info->output_bfd->xvec != abfd->xvec |
116c20d2 NC |
2376 | || (((struct xcoff_link_hash_entry *) h)->flags |
2377 | & XCOFF_DEF_DYNAMIC) == 0)) | |
252b5132 | 2378 | { |
0e144ba7 AM |
2379 | if (!(*info->callbacks |
2380 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
b95a0a31 | 2381 | continue; |
116c20d2 NC |
2382 | *pneeded = TRUE; |
2383 | return TRUE; | |
252b5132 RH |
2384 | } |
2385 | } | |
252b5132 | 2386 | |
116c20d2 | 2387 | esym += (sym.n_numaux + 1) * symesz; |
252b5132 RH |
2388 | } |
2389 | ||
116c20d2 NC |
2390 | /* We do not need this object file. */ |
2391 | return TRUE; | |
2392 | } | |
252b5132 | 2393 | |
116c20d2 NC |
2394 | /* Check a single archive element to see if we need to include it in |
2395 | the link. *PNEEDED is set according to whether this element is | |
2396 | needed in the link or not. This is called via | |
2397 | _bfd_generic_link_add_archive_symbols. */ | |
2398 | ||
2399 | static bfd_boolean | |
2400 | xcoff_link_check_archive_element (bfd *abfd, | |
2401 | struct bfd_link_info *info, | |
13e570f8 AM |
2402 | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
2403 | const char *name ATTRIBUTE_UNUSED, | |
116c20d2 NC |
2404 | bfd_boolean *pneeded) |
2405 | { | |
f95942a3 | 2406 | bfd_boolean keep_syms_p; |
0e144ba7 | 2407 | bfd *oldbfd; |
f95942a3 RS |
2408 | |
2409 | keep_syms_p = (obj_coff_external_syms (abfd) != NULL); | |
0e144ba7 | 2410 | if (!_bfd_coff_get_external_symbols (abfd)) |
b34976b6 | 2411 | return FALSE; |
252b5132 | 2412 | |
0e144ba7 AM |
2413 | oldbfd = abfd; |
2414 | if (!xcoff_link_check_ar_symbols (abfd, info, pneeded, &abfd)) | |
116c20d2 NC |
2415 | return FALSE; |
2416 | ||
2417 | if (*pneeded) | |
252b5132 | 2418 | { |
5d3236ee DK |
2419 | /* Potentially, the add_archive_element hook may have set a |
2420 | substitute BFD for us. */ | |
0e144ba7 AM |
2421 | if (abfd != oldbfd) |
2422 | { | |
2423 | if (!keep_syms_p | |
2424 | && !_bfd_coff_free_symbols (oldbfd)) | |
2425 | return FALSE; | |
2426 | keep_syms_p = (obj_coff_external_syms (abfd) != NULL); | |
2427 | if (!_bfd_coff_get_external_symbols (abfd)) | |
2428 | return FALSE; | |
2429 | } | |
2430 | if (!xcoff_link_add_symbols (abfd, info)) | |
116c20d2 | 2431 | return FALSE; |
f95942a3 RS |
2432 | if (info->keep_memory) |
2433 | keep_syms_p = TRUE; | |
252b5132 | 2434 | } |
116c20d2 | 2435 | |
f95942a3 | 2436 | if (!keep_syms_p) |
252b5132 | 2437 | { |
0e144ba7 | 2438 | if (!_bfd_coff_free_symbols (abfd)) |
116c20d2 | 2439 | return FALSE; |
252b5132 | 2440 | } |
252b5132 | 2441 | |
116c20d2 NC |
2442 | return TRUE; |
2443 | } | |
252b5132 | 2444 | |
116c20d2 NC |
2445 | /* Given an XCOFF BFD, add symbols to the global hash table as |
2446 | appropriate. */ | |
252b5132 | 2447 | |
116c20d2 NC |
2448 | bfd_boolean |
2449 | _bfd_xcoff_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info) | |
2450 | { | |
2451 | switch (bfd_get_format (abfd)) | |
2452 | { | |
2453 | case bfd_object: | |
2454 | return xcoff_link_add_object_symbols (abfd, info); | |
2455 | ||
2456 | case bfd_archive: | |
2457 | /* If the archive has a map, do the usual search. We then need | |
2458 | to check the archive for dynamic objects, because they may not | |
2459 | appear in the archive map even though they should, perhaps, be | |
2460 | included. If the archive has no map, we just consider each object | |
2461 | file in turn, since that apparently is what the AIX native linker | |
2462 | does. */ | |
2463 | if (bfd_has_map (abfd)) | |
2464 | { | |
2465 | if (! (_bfd_generic_link_add_archive_symbols | |
2466 | (abfd, info, xcoff_link_check_archive_element))) | |
2467 | return FALSE; | |
2468 | } | |
2469 | ||
2470 | { | |
2471 | bfd *member; | |
2472 | ||
2473 | member = bfd_openr_next_archived_file (abfd, NULL); | |
2474 | while (member != NULL) | |
2475 | { | |
2476 | if (bfd_check_format (member, bfd_object) | |
f13a99db | 2477 | && (info->output_bfd->xvec == member->xvec) |
116c20d2 NC |
2478 | && (! bfd_has_map (abfd) || (member->flags & DYNAMIC) != 0)) |
2479 | { | |
2480 | bfd_boolean needed; | |
2481 | ||
2482 | if (! xcoff_link_check_archive_element (member, info, | |
13e570f8 | 2483 | NULL, NULL, &needed)) |
116c20d2 NC |
2484 | return FALSE; |
2485 | if (needed) | |
2486 | member->archive_pass = -1; | |
2487 | } | |
2488 | member = bfd_openr_next_archived_file (abfd, member); | |
2489 | } | |
2490 | } | |
2491 | ||
2492 | return TRUE; | |
2493 | ||
2494 | default: | |
2495 | bfd_set_error (bfd_error_wrong_format); | |
2496 | return FALSE; | |
2497 | } | |
252b5132 RH |
2498 | } |
2499 | \f | |
3023e3f6 RS |
2500 | bfd_boolean |
2501 | _bfd_xcoff_define_common_symbol (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2502 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2503 | struct bfd_link_hash_entry *harg) | |
2504 | { | |
2505 | struct xcoff_link_hash_entry *h; | |
2506 | ||
2507 | if (!bfd_generic_define_common_symbol (output_bfd, info, harg)) | |
2508 | return FALSE; | |
2509 | ||
2510 | h = (struct xcoff_link_hash_entry *) harg; | |
2511 | h->flags |= XCOFF_DEF_REGULAR; | |
2512 | return TRUE; | |
2513 | } | |
2514 | \f | |
858ef0ce RS |
2515 | /* If symbol H has not been interpreted as a function descriptor, |
2516 | see whether it should be. Set up its descriptor information if so. */ | |
2517 | ||
2518 | static bfd_boolean | |
2519 | xcoff_find_function (struct bfd_link_info *info, | |
2520 | struct xcoff_link_hash_entry *h) | |
2521 | { | |
2522 | if ((h->flags & XCOFF_DESCRIPTOR) == 0 | |
2523 | && h->root.root.string[0] != '.') | |
2524 | { | |
2525 | char *fnname; | |
2526 | struct xcoff_link_hash_entry *hfn; | |
986f0783 | 2527 | size_t amt; |
858ef0ce RS |
2528 | |
2529 | amt = strlen (h->root.root.string) + 2; | |
2530 | fnname = bfd_malloc (amt); | |
2531 | if (fnname == NULL) | |
2532 | return FALSE; | |
2533 | fnname[0] = '.'; | |
2534 | strcpy (fnname + 1, h->root.root.string); | |
2535 | hfn = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
2536 | fnname, FALSE, FALSE, TRUE); | |
2537 | free (fnname); | |
2538 | if (hfn != NULL | |
2539 | && hfn->smclas == XMC_PR | |
2540 | && (hfn->root.type == bfd_link_hash_defined | |
2541 | || hfn->root.type == bfd_link_hash_defweak)) | |
2542 | { | |
2543 | h->flags |= XCOFF_DESCRIPTOR; | |
2544 | h->descriptor = hfn; | |
2545 | hfn->descriptor = h; | |
2546 | } | |
2547 | } | |
2548 | return TRUE; | |
2549 | } | |
858ef0ce | 2550 | \f |
b64232cc RS |
2551 | /* Return true if the given bfd contains at least one shared object. */ |
2552 | ||
2553 | static bfd_boolean | |
ee698300 RS |
2554 | xcoff_archive_contains_shared_object_p (struct bfd_link_info *info, |
2555 | bfd *archive) | |
b64232cc | 2556 | { |
ee698300 | 2557 | struct xcoff_archive_info *archive_info; |
b64232cc RS |
2558 | bfd *member; |
2559 | ||
ee698300 RS |
2560 | archive_info = xcoff_get_archive_info (info, archive); |
2561 | if (!archive_info->know_contains_shared_object_p) | |
2562 | { | |
2563 | member = bfd_openr_next_archived_file (archive, NULL); | |
2564 | while (member != NULL && (member->flags & DYNAMIC) == 0) | |
2565 | member = bfd_openr_next_archived_file (archive, member); | |
2566 | ||
2567 | archive_info->contains_shared_object_p = (member != NULL); | |
2568 | archive_info->know_contains_shared_object_p = 1; | |
2569 | } | |
2570 | return archive_info->contains_shared_object_p; | |
b64232cc RS |
2571 | } |
2572 | ||
2573 | /* Symbol H qualifies for export by -bexpfull. Return true if it also | |
2574 | qualifies for export by -bexpall. */ | |
2575 | ||
2576 | static bfd_boolean | |
2577 | xcoff_covered_by_expall_p (struct xcoff_link_hash_entry *h) | |
2578 | { | |
2579 | /* Exclude symbols beginning with '_'. */ | |
2580 | if (h->root.root.string[0] == '_') | |
2581 | return FALSE; | |
2582 | ||
2583 | /* Exclude archive members that would otherwise be unreferenced. */ | |
2584 | if ((h->flags & XCOFF_MARK) == 0 | |
2585 | && (h->root.type == bfd_link_hash_defined | |
2586 | || h->root.type == bfd_link_hash_defweak) | |
2587 | && h->root.u.def.section->owner != NULL | |
2588 | && h->root.u.def.section->owner->my_archive != NULL) | |
2589 | return FALSE; | |
2590 | ||
2591 | return TRUE; | |
2592 | } | |
2593 | ||
2594 | /* Return true if symbol H qualifies for the forms of automatic export | |
2595 | specified by AUTO_EXPORT_FLAGS. */ | |
2596 | ||
2597 | static bfd_boolean | |
ee698300 RS |
2598 | xcoff_auto_export_p (struct bfd_link_info *info, |
2599 | struct xcoff_link_hash_entry *h, | |
b64232cc RS |
2600 | unsigned int auto_export_flags) |
2601 | { | |
2602 | /* Don't automatically export things that were explicitly exported. */ | |
2603 | if ((h->flags & XCOFF_EXPORT) != 0) | |
2604 | return FALSE; | |
2605 | ||
2606 | /* Don't export things that we don't define. */ | |
2607 | if ((h->flags & XCOFF_DEF_REGULAR) == 0) | |
2608 | return FALSE; | |
2609 | ||
2610 | /* Don't export functions; export their descriptors instead. */ | |
2611 | if (h->root.root.string[0] == '.') | |
2612 | return FALSE; | |
2613 | ||
2614 | /* We don't export a symbol which is being defined by an object | |
2615 | included from an archive which contains a shared object. The | |
2616 | rationale is that if an archive contains both an unshared and | |
2617 | a shared object, then there must be some reason that the | |
2618 | unshared object is unshared, and we don't want to start | |
2619 | providing a shared version of it. In particular, this solves | |
2620 | a bug involving the _savefNN set of functions. gcc will call | |
2621 | those functions without providing a slot to restore the TOC, | |
2622 | so it is essential that these functions be linked in directly | |
2623 | and not from a shared object, which means that a shared | |
2624 | object which also happens to link them in must not export | |
2625 | them. This is confusing, but I haven't been able to think of | |
2626 | a different approach. Note that the symbols can, of course, | |
2627 | be exported explicitly. */ | |
2628 | if (h->root.type == bfd_link_hash_defined | |
2629 | || h->root.type == bfd_link_hash_defweak) | |
2630 | { | |
2631 | bfd *owner; | |
2632 | ||
2633 | owner = h->root.u.def.section->owner; | |
2634 | if (owner != NULL | |
2635 | && owner->my_archive != NULL | |
ee698300 | 2636 | && xcoff_archive_contains_shared_object_p (info, owner->my_archive)) |
b64232cc RS |
2637 | return FALSE; |
2638 | } | |
2639 | ||
2640 | /* Otherwise, all symbols are exported by -bexpfull. */ | |
2641 | if ((auto_export_flags & XCOFF_EXPFULL) != 0) | |
2642 | return TRUE; | |
2643 | ||
2644 | /* Despite its name, -bexpall exports most but not all symbols. */ | |
2645 | if ((auto_export_flags & XCOFF_EXPALL) != 0 | |
2646 | && xcoff_covered_by_expall_p (h)) | |
2647 | return TRUE; | |
2648 | ||
2649 | return FALSE; | |
2650 | } | |
2651 | \f | |
b3d1832c RS |
2652 | /* Return true if relocation REL needs to be copied to the .loader section. |
2653 | If REL is against a global symbol, H is that symbol, otherwise it | |
2654 | is null. */ | |
2655 | ||
2656 | static bfd_boolean | |
2657 | xcoff_need_ldrel_p (struct bfd_link_info *info, struct internal_reloc *rel, | |
2658 | struct xcoff_link_hash_entry *h) | |
2659 | { | |
2660 | if (!xcoff_hash_table (info)->loader_section) | |
2661 | return FALSE; | |
2662 | ||
2663 | switch (rel->r_type) | |
2664 | { | |
2665 | case R_TOC: | |
2666 | case R_GL: | |
2667 | case R_TCL: | |
2668 | case R_TRL: | |
2669 | case R_TRLA: | |
2670 | /* We should never need a .loader reloc for a TOC-relative reloc. */ | |
2671 | return FALSE; | |
2672 | ||
2673 | default: | |
2674 | /* In this case, relocations against defined symbols can be resolved | |
2675 | statically. */ | |
2676 | if (h == NULL | |
2677 | || h->root.type == bfd_link_hash_defined | |
2678 | || h->root.type == bfd_link_hash_defweak | |
2679 | || h->root.type == bfd_link_hash_common) | |
2680 | return FALSE; | |
2681 | ||
2682 | /* We will always provide a local definition of function symbols, | |
2683 | even if we don't have one yet. */ | |
2684 | if ((h->flags & XCOFF_CALLED) != 0) | |
2685 | return FALSE; | |
2686 | ||
2687 | return TRUE; | |
2688 | ||
2689 | case R_POS: | |
2690 | case R_NEG: | |
2691 | case R_RL: | |
2692 | case R_RLA: | |
2693 | /* Absolute relocations against absolute symbols can be | |
2694 | resolved statically. */ | |
c691de6a | 2695 | if (h != NULL && bfd_is_abs_symbol (&h->root)) |
b3d1832c RS |
2696 | return FALSE; |
2697 | ||
2698 | return TRUE; | |
2699 | } | |
2700 | } | |
2701 | \f | |
252b5132 RH |
2702 | /* Mark a symbol as not being garbage, including the section in which |
2703 | it is defined. */ | |
2704 | ||
116c20d2 NC |
2705 | static inline bfd_boolean |
2706 | xcoff_mark_symbol (struct bfd_link_info *info, struct xcoff_link_hash_entry *h) | |
252b5132 RH |
2707 | { |
2708 | if ((h->flags & XCOFF_MARK) != 0) | |
b34976b6 | 2709 | return TRUE; |
252b5132 RH |
2710 | |
2711 | h->flags |= XCOFF_MARK; | |
858ef0ce RS |
2712 | |
2713 | /* If we're marking an undefined symbol, try find some way of | |
2714 | defining it. */ | |
0e1862bb | 2715 | if (!bfd_link_relocatable (info) |
858ef0ce RS |
2716 | && (h->flags & XCOFF_IMPORT) == 0 |
2717 | && (h->flags & XCOFF_DEF_REGULAR) == 0 | |
2718 | && (h->root.type == bfd_link_hash_undefined | |
2719 | || h->root.type == bfd_link_hash_undefweak)) | |
2720 | { | |
2721 | /* First check whether this symbol can be interpreted as an | |
2722 | undefined function descriptor for a defined function symbol. */ | |
2723 | if (!xcoff_find_function (info, h)) | |
2724 | return FALSE; | |
2725 | ||
2726 | if ((h->flags & XCOFF_DESCRIPTOR) != 0 | |
2727 | && (h->descriptor->root.type == bfd_link_hash_defined | |
2728 | || h->descriptor->root.type == bfd_link_hash_defweak)) | |
2729 | { | |
2730 | /* This is a descriptor for a defined symbol, but the input | |
2731 | objects have not defined the descriptor itself. Fill in | |
2732 | the definition automatically. | |
2733 | ||
2734 | Note that we do this even if we found a dynamic definition | |
2735 | of H. The local function definition logically overrides | |
2736 | the dynamic one. */ | |
2737 | asection *sec; | |
2738 | ||
2739 | sec = xcoff_hash_table (info)->descriptor_section; | |
2740 | h->root.type = bfd_link_hash_defined; | |
2741 | h->root.u.def.section = sec; | |
2742 | h->root.u.def.value = sec->size; | |
2743 | h->smclas = XMC_DS; | |
2744 | h->flags |= XCOFF_DEF_REGULAR; | |
2745 | ||
2746 | /* The size of the function descriptor depends on whether this | |
2747 | is xcoff32 (12) or xcoff64 (24). */ | |
2748 | sec->size += bfd_xcoff_function_descriptor_size (sec->owner); | |
2749 | ||
2750 | /* A function descriptor uses two relocs: one for the | |
2751 | associated code, and one for the TOC address. */ | |
2752 | xcoff_hash_table (info)->ldrel_count += 2; | |
2753 | sec->reloc_count += 2; | |
2754 | ||
2755 | /* Mark the function itself. */ | |
2756 | if (!xcoff_mark_symbol (info, h->descriptor)) | |
2757 | return FALSE; | |
2758 | ||
47dfb2ca RS |
2759 | /* Mark the TOC section, so that we get an anchor |
2760 | to relocate against. */ | |
2761 | if (!xcoff_mark (info, xcoff_hash_table (info)->toc_section)) | |
2762 | return FALSE; | |
2763 | ||
858ef0ce RS |
2764 | /* We handle writing out the contents of the descriptor in |
2765 | xcoff_write_global_symbol. */ | |
2766 | } | |
94313f36 RS |
2767 | else if (info->static_link) |
2768 | /* We can't get a symbol value dynamically, so just assume | |
2769 | that it's undefined. */ | |
2770 | h->flags |= XCOFF_WAS_UNDEFINED; | |
858ef0ce RS |
2771 | else if ((h->flags & XCOFF_CALLED) != 0) |
2772 | { | |
2773 | /* This is a function symbol for which we need to create | |
2774 | linkage code. */ | |
2775 | asection *sec; | |
2776 | struct xcoff_link_hash_entry *hds; | |
2777 | ||
2778 | /* Mark the descriptor (and its TOC section). */ | |
2779 | hds = h->descriptor; | |
2780 | BFD_ASSERT ((hds->root.type == bfd_link_hash_undefined | |
2781 | || hds->root.type == bfd_link_hash_undefweak) | |
2782 | && (hds->flags & XCOFF_DEF_REGULAR) == 0); | |
2783 | if (!xcoff_mark_symbol (info, hds)) | |
2784 | return FALSE; | |
2785 | ||
2786 | /* Treat this symbol as undefined if the descriptor was. */ | |
2787 | if ((hds->flags & XCOFF_WAS_UNDEFINED) != 0) | |
2788 | h->flags |= XCOFF_WAS_UNDEFINED; | |
2789 | ||
2790 | /* Allocate room for the global linkage code itself. */ | |
2791 | sec = xcoff_hash_table (info)->linkage_section; | |
2792 | h->root.type = bfd_link_hash_defined; | |
2793 | h->root.u.def.section = sec; | |
2794 | h->root.u.def.value = sec->size; | |
2795 | h->smclas = XMC_GL; | |
2796 | h->flags |= XCOFF_DEF_REGULAR; | |
2797 | sec->size += bfd_xcoff_glink_code_size (info->output_bfd); | |
2798 | ||
2799 | /* The global linkage code requires a TOC entry for the | |
2800 | descriptor. */ | |
2801 | if (hds->toc_section == NULL) | |
2802 | { | |
2803 | int byte_size; | |
2804 | ||
2805 | /* 32 vs 64 | |
2806 | xcoff32 uses 4 bytes in the toc. | |
2807 | xcoff64 uses 8 bytes in the toc. */ | |
2808 | if (bfd_xcoff_is_xcoff64 (info->output_bfd)) | |
2809 | byte_size = 8; | |
2810 | else if (bfd_xcoff_is_xcoff32 (info->output_bfd)) | |
2811 | byte_size = 4; | |
2812 | else | |
2813 | return FALSE; | |
2814 | ||
2815 | /* Allocate room in the fallback TOC section. */ | |
2816 | hds->toc_section = xcoff_hash_table (info)->toc_section; | |
2817 | hds->u.toc_offset = hds->toc_section->size; | |
2818 | hds->toc_section->size += byte_size; | |
2819 | if (!xcoff_mark (info, hds->toc_section)) | |
2820 | return FALSE; | |
2821 | ||
2822 | /* Allocate room for a static and dynamic R_TOC | |
2823 | relocation. */ | |
2824 | ++xcoff_hash_table (info)->ldrel_count; | |
2825 | ++hds->toc_section->reloc_count; | |
2826 | ||
2827 | /* Set the index to -2 to force this symbol to | |
2828 | get written out. */ | |
2829 | hds->indx = -2; | |
2830 | hds->flags |= XCOFF_SET_TOC | XCOFF_LDREL; | |
2831 | } | |
2832 | } | |
2833 | else if ((h->flags & XCOFF_DEF_DYNAMIC) == 0) | |
2834 | { | |
2835 | /* Record that the symbol was undefined, then import it. | |
2836 | -brtl links use a special fake import file. */ | |
2837 | h->flags |= XCOFF_WAS_UNDEFINED | XCOFF_IMPORT; | |
2838 | if (xcoff_hash_table (info)->rtld) | |
2839 | { | |
2840 | if (!xcoff_set_import_path (info, h, "", "..", "")) | |
2841 | return FALSE; | |
2842 | } | |
2843 | else | |
2844 | { | |
2845 | if (!xcoff_set_import_path (info, h, NULL, NULL, NULL)) | |
2846 | return FALSE; | |
2847 | } | |
2848 | } | |
2849 | } | |
2850 | ||
252b5132 RH |
2851 | if (h->root.type == bfd_link_hash_defined |
2852 | || h->root.type == bfd_link_hash_defweak) | |
2853 | { | |
2854 | asection *hsec; | |
2855 | ||
2856 | hsec = h->root.u.def.section; | |
2857 | if (! bfd_is_abs_section (hsec) | |
2858 | && (hsec->flags & SEC_MARK) == 0) | |
2859 | { | |
2860 | if (! xcoff_mark (info, hsec)) | |
b34976b6 | 2861 | return FALSE; |
252b5132 RH |
2862 | } |
2863 | } | |
2864 | ||
2865 | if (h->toc_section != NULL | |
2866 | && (h->toc_section->flags & SEC_MARK) == 0) | |
2867 | { | |
2868 | if (! xcoff_mark (info, h->toc_section)) | |
b34976b6 | 2869 | return FALSE; |
252b5132 RH |
2870 | } |
2871 | ||
b34976b6 | 2872 | return TRUE; |
252b5132 RH |
2873 | } |
2874 | ||
7d504122 RS |
2875 | /* Look for a symbol called NAME. If the symbol is defined, mark it. |
2876 | If the symbol exists, set FLAGS. */ | |
2877 | ||
2878 | static bfd_boolean | |
2879 | xcoff_mark_symbol_by_name (struct bfd_link_info *info, | |
2880 | const char *name, unsigned int flags) | |
2881 | { | |
2882 | struct xcoff_link_hash_entry *h; | |
2883 | ||
2884 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, | |
2885 | FALSE, FALSE, TRUE); | |
2886 | if (h != NULL) | |
2887 | { | |
2888 | h->flags |= flags; | |
2889 | if (h->root.type == bfd_link_hash_defined | |
2890 | || h->root.type == bfd_link_hash_defweak) | |
2891 | { | |
2892 | if (!xcoff_mark (info, h->root.u.def.section)) | |
2893 | return FALSE; | |
2894 | } | |
2895 | } | |
2896 | return TRUE; | |
2897 | } | |
2898 | ||
252b5132 RH |
2899 | /* The mark phase of garbage collection. For a given section, mark |
2900 | it, and all the sections which define symbols to which it refers. | |
2901 | Because this function needs to look at the relocs, we also count | |
2902 | the number of relocs which need to be copied into the .loader | |
2903 | section. */ | |
2904 | ||
b34976b6 | 2905 | static bfd_boolean |
116c20d2 | 2906 | xcoff_mark (struct bfd_link_info *info, asection *sec) |
252b5132 RH |
2907 | { |
2908 | if (bfd_is_abs_section (sec) | |
2909 | || (sec->flags & SEC_MARK) != 0) | |
b34976b6 | 2910 | return TRUE; |
252b5132 RH |
2911 | |
2912 | sec->flags |= SEC_MARK; | |
2913 | ||
f13a99db | 2914 | if (sec->owner->xvec == info->output_bfd->xvec |
252b5132 RH |
2915 | && coff_section_data (sec->owner, sec) != NULL |
2916 | && xcoff_section_data (sec->owner, sec) != NULL) | |
2917 | { | |
4cc02a02 | 2918 | struct xcoff_link_hash_entry **syms; |
252b5132 | 2919 | struct internal_reloc *rel, *relend; |
4cc02a02 RS |
2920 | asection **csects; |
2921 | unsigned long i, first, last; | |
252b5132 RH |
2922 | |
2923 | /* Mark all the symbols in this section. */ | |
4cc02a02 RS |
2924 | syms = obj_xcoff_sym_hashes (sec->owner); |
2925 | csects = xcoff_data (sec->owner)->csects; | |
2926 | first = xcoff_section_data (sec->owner, sec)->first_symndx; | |
2927 | last = xcoff_section_data (sec->owner, sec)->last_symndx; | |
2928 | for (i = first; i <= last; i++) | |
2929 | if (csects[i] == sec | |
2930 | && syms[i] != NULL | |
2931 | && (syms[i]->flags & XCOFF_MARK) == 0) | |
2932 | { | |
2933 | if (!xcoff_mark_symbol (info, syms[i])) | |
2934 | return FALSE; | |
2935 | } | |
252b5132 RH |
2936 | |
2937 | /* Look through the section relocs. */ | |
252b5132 RH |
2938 | if ((sec->flags & SEC_RELOC) != 0 |
2939 | && sec->reloc_count > 0) | |
2940 | { | |
b34976b6 | 2941 | rel = xcoff_read_internal_relocs (sec->owner, sec, TRUE, |
116c20d2 | 2942 | NULL, FALSE, NULL); |
252b5132 | 2943 | if (rel == NULL) |
b34976b6 | 2944 | return FALSE; |
252b5132 RH |
2945 | relend = rel + sec->reloc_count; |
2946 | for (; rel < relend; rel++) | |
2947 | { | |
252b5132 RH |
2948 | struct xcoff_link_hash_entry *h; |
2949 | ||
2950 | if ((unsigned int) rel->r_symndx | |
2951 | > obj_raw_syment_count (sec->owner)) | |
2952 | continue; | |
2953 | ||
2954 | h = obj_xcoff_sym_hashes (sec->owner)[rel->r_symndx]; | |
5b49f6dc | 2955 | if (h != NULL) |
252b5132 | 2956 | { |
5b49f6dc RS |
2957 | if ((h->flags & XCOFF_MARK) == 0) |
2958 | { | |
2959 | if (!xcoff_mark_symbol (info, h)) | |
2960 | return FALSE; | |
2961 | } | |
252b5132 | 2962 | } |
5b49f6dc | 2963 | else |
252b5132 | 2964 | { |
5b49f6dc RS |
2965 | asection *rsec; |
2966 | ||
2967 | rsec = xcoff_data (sec->owner)->csects[rel->r_symndx]; | |
2968 | if (rsec != NULL | |
2969 | && (rsec->flags & SEC_MARK) == 0) | |
2970 | { | |
2971 | if (!xcoff_mark (info, rsec)) | |
2972 | return FALSE; | |
2973 | } | |
252b5132 RH |
2974 | } |
2975 | ||
2976 | /* See if this reloc needs to be copied into the .loader | |
b34976b6 | 2977 | section. */ |
b3d1832c | 2978 | if (xcoff_need_ldrel_p (info, rel, h)) |
252b5132 | 2979 | { |
252b5132 RH |
2980 | ++xcoff_hash_table (info)->ldrel_count; |
2981 | if (h != NULL) | |
2982 | h->flags |= XCOFF_LDREL; | |
252b5132 RH |
2983 | } |
2984 | } | |
2985 | ||
2986 | if (! info->keep_memory | |
2987 | && coff_section_data (sec->owner, sec) != NULL | |
2988 | && coff_section_data (sec->owner, sec)->relocs != NULL | |
2989 | && ! coff_section_data (sec->owner, sec)->keep_relocs) | |
2990 | { | |
2991 | free (coff_section_data (sec->owner, sec)->relocs); | |
2992 | coff_section_data (sec->owner, sec)->relocs = NULL; | |
2993 | } | |
2994 | } | |
2995 | } | |
2996 | ||
b34976b6 | 2997 | return TRUE; |
252b5132 RH |
2998 | } |
2999 | ||
116c20d2 NC |
3000 | /* Routines that are called after all the input files have been |
3001 | handled, but before the sections are laid out in memory. */ | |
3002 | ||
252b5132 RH |
3003 | /* The sweep phase of garbage collection. Remove all garbage |
3004 | sections. */ | |
3005 | ||
3006 | static void | |
116c20d2 | 3007 | xcoff_sweep (struct bfd_link_info *info) |
252b5132 RH |
3008 | { |
3009 | bfd *sub; | |
3010 | ||
c72f2fb2 | 3011 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
252b5132 RH |
3012 | { |
3013 | asection *o; | |
3014 | ||
3015 | for (o = sub->sections; o != NULL; o = o->next) | |
3016 | { | |
3017 | if ((o->flags & SEC_MARK) == 0) | |
3018 | { | |
3019 | /* Keep all sections from non-XCOFF input files. Keep | |
b34976b6 AM |
3020 | special sections. Keep .debug sections for the |
3021 | moment. */ | |
f13a99db | 3022 | if (sub->xvec != info->output_bfd->xvec |
252b5132 RH |
3023 | || o == xcoff_hash_table (info)->debug_section |
3024 | || o == xcoff_hash_table (info)->loader_section | |
3025 | || o == xcoff_hash_table (info)->linkage_section | |
252b5132 | 3026 | || o == xcoff_hash_table (info)->descriptor_section |
fd361982 | 3027 | || (bfd_section_flags (o) & SEC_DEBUGGING) |
252b5132 RH |
3028 | || strcmp (o->name, ".debug") == 0) |
3029 | o->flags |= SEC_MARK; | |
3030 | else | |
3031 | { | |
eea6121a | 3032 | o->size = 0; |
252b5132 | 3033 | o->reloc_count = 0; |
252b5132 RH |
3034 | } |
3035 | } | |
3036 | } | |
3037 | } | |
3038 | } | |
3039 | ||
3040 | /* Record the number of elements in a set. This is used to output the | |
3041 | correct csect length. */ | |
3042 | ||
b34976b6 | 3043 | bfd_boolean |
116c20d2 NC |
3044 | bfd_xcoff_link_record_set (bfd *output_bfd, |
3045 | struct bfd_link_info *info, | |
3046 | struct bfd_link_hash_entry *harg, | |
3047 | bfd_size_type size) | |
252b5132 RH |
3048 | { |
3049 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; | |
3050 | struct xcoff_link_size_list *n; | |
986f0783 | 3051 | size_t amt; |
252b5132 | 3052 | |
9bd09e22 | 3053 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
b34976b6 | 3054 | return TRUE; |
252b5132 RH |
3055 | |
3056 | /* This will hardly ever be called. I don't want to burn four bytes | |
3057 | per global symbol, so instead the size is kept on a linked list | |
3058 | attached to the hash table. */ | |
116c20d2 NC |
3059 | amt = sizeof (* n); |
3060 | n = bfd_alloc (output_bfd, amt); | |
252b5132 | 3061 | if (n == NULL) |
b34976b6 | 3062 | return FALSE; |
252b5132 RH |
3063 | n->next = xcoff_hash_table (info)->size_list; |
3064 | n->h = h; | |
3065 | n->size = size; | |
3066 | xcoff_hash_table (info)->size_list = n; | |
3067 | ||
3068 | h->flags |= XCOFF_HAS_SIZE; | |
3069 | ||
b34976b6 | 3070 | return TRUE; |
252b5132 RH |
3071 | } |
3072 | ||
3073 | /* Import a symbol. */ | |
3074 | ||
b34976b6 | 3075 | bfd_boolean |
116c20d2 NC |
3076 | bfd_xcoff_import_symbol (bfd *output_bfd, |
3077 | struct bfd_link_info *info, | |
3078 | struct bfd_link_hash_entry *harg, | |
3079 | bfd_vma val, | |
3080 | const char *imppath, | |
3081 | const char *impfile, | |
3082 | const char *impmember, | |
3083 | unsigned int syscall_flag) | |
252b5132 RH |
3084 | { |
3085 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; | |
3086 | ||
9bd09e22 | 3087 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
b34976b6 | 3088 | return TRUE; |
252b5132 RH |
3089 | |
3090 | /* A symbol name which starts with a period is the code for a | |
3091 | function. If the symbol is undefined, then add an undefined | |
3092 | symbol for the function descriptor, and import that instead. */ | |
3093 | if (h->root.root.string[0] == '.' | |
3094 | && h->root.type == bfd_link_hash_undefined | |
3095 | && val == (bfd_vma) -1) | |
3096 | { | |
3097 | struct xcoff_link_hash_entry *hds; | |
3098 | ||
3099 | hds = h->descriptor; | |
3100 | if (hds == NULL) | |
3101 | { | |
3102 | hds = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
3103 | h->root.root.string + 1, | |
b34976b6 | 3104 | TRUE, FALSE, TRUE); |
252b5132 | 3105 | if (hds == NULL) |
b34976b6 | 3106 | return FALSE; |
252b5132 RH |
3107 | if (hds->root.type == bfd_link_hash_new) |
3108 | { | |
3109 | hds->root.type = bfd_link_hash_undefined; | |
3110 | hds->root.u.undef.abfd = h->root.u.undef.abfd; | |
3111 | } | |
3112 | hds->flags |= XCOFF_DESCRIPTOR; | |
858ef0ce | 3113 | BFD_ASSERT ((h->flags & XCOFF_DESCRIPTOR) == 0); |
252b5132 RH |
3114 | hds->descriptor = h; |
3115 | h->descriptor = hds; | |
3116 | } | |
3117 | ||
3118 | /* Now, if the descriptor is undefined, import the descriptor | |
b34976b6 AM |
3119 | rather than the symbol we were told to import. FIXME: Is |
3120 | this correct in all cases? */ | |
252b5132 RH |
3121 | if (hds->root.type == bfd_link_hash_undefined) |
3122 | h = hds; | |
3123 | } | |
3124 | ||
1fdf0249 | 3125 | h->flags |= (XCOFF_IMPORT | syscall_flag); |
252b5132 RH |
3126 | |
3127 | if (val != (bfd_vma) -1) | |
3128 | { | |
3129 | if (h->root.type == bfd_link_hash_defined | |
c691de6a | 3130 | && (!bfd_is_abs_symbol (&h->root) |
252b5132 | 3131 | || h->root.u.def.value != val)) |
1a72702b AM |
3132 | (*info->callbacks->multiple_definition) (info, &h->root, output_bfd, |
3133 | bfd_abs_section_ptr, val); | |
252b5132 RH |
3134 | |
3135 | h->root.type = bfd_link_hash_defined; | |
3136 | h->root.u.def.section = bfd_abs_section_ptr; | |
3137 | h->root.u.def.value = val; | |
c4037431 | 3138 | h->smclas = XMC_XO; |
252b5132 RH |
3139 | } |
3140 | ||
858ef0ce RS |
3141 | if (!xcoff_set_import_path (info, h, imppath, impfile, impmember)) |
3142 | return FALSE; | |
252b5132 | 3143 | |
b34976b6 | 3144 | return TRUE; |
252b5132 RH |
3145 | } |
3146 | ||
3147 | /* Export a symbol. */ | |
3148 | ||
b34976b6 | 3149 | bfd_boolean |
116c20d2 NC |
3150 | bfd_xcoff_export_symbol (bfd *output_bfd, |
3151 | struct bfd_link_info *info, | |
3152 | struct bfd_link_hash_entry *harg) | |
252b5132 RH |
3153 | { |
3154 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; | |
3155 | ||
9bd09e22 | 3156 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
b34976b6 | 3157 | return TRUE; |
252b5132 RH |
3158 | |
3159 | h->flags |= XCOFF_EXPORT; | |
3160 | ||
3161 | /* FIXME: I'm not at all sure what syscall is supposed to mean, so | |
3162 | I'm just going to ignore it until somebody explains it. */ | |
3163 | ||
252b5132 RH |
3164 | /* Make sure we don't garbage collect this symbol. */ |
3165 | if (! xcoff_mark_symbol (info, h)) | |
b34976b6 | 3166 | return FALSE; |
252b5132 RH |
3167 | |
3168 | /* If this is a function descriptor, make sure we don't garbage | |
3169 | collect the associated function code. We normally don't have to | |
3170 | worry about this, because the descriptor will be attached to a | |
3171 | section with relocs, but if we are creating the descriptor | |
3172 | ourselves those relocs will not be visible to the mark code. */ | |
3173 | if ((h->flags & XCOFF_DESCRIPTOR) != 0) | |
3174 | { | |
3175 | if (! xcoff_mark_symbol (info, h->descriptor)) | |
b34976b6 | 3176 | return FALSE; |
252b5132 RH |
3177 | } |
3178 | ||
b34976b6 | 3179 | return TRUE; |
252b5132 RH |
3180 | } |
3181 | ||
3182 | /* Count a reloc against a symbol. This is called for relocs | |
3183 | generated by the linker script, typically for global constructors | |
3184 | and destructors. */ | |
3185 | ||
b34976b6 | 3186 | bfd_boolean |
116c20d2 NC |
3187 | bfd_xcoff_link_count_reloc (bfd *output_bfd, |
3188 | struct bfd_link_info *info, | |
3189 | const char *name) | |
252b5132 RH |
3190 | { |
3191 | struct xcoff_link_hash_entry *h; | |
3192 | ||
9bd09e22 | 3193 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
b34976b6 | 3194 | return TRUE; |
252b5132 RH |
3195 | |
3196 | h = ((struct xcoff_link_hash_entry *) | |
b34976b6 AM |
3197 | bfd_wrapped_link_hash_lookup (output_bfd, info, name, FALSE, FALSE, |
3198 | FALSE)); | |
252b5132 RH |
3199 | if (h == NULL) |
3200 | { | |
4eca0228 | 3201 | _bfd_error_handler (_("%s: no such symbol"), name); |
252b5132 | 3202 | bfd_set_error (bfd_error_no_symbols); |
b34976b6 | 3203 | return FALSE; |
252b5132 RH |
3204 | } |
3205 | ||
b3d1832c RS |
3206 | h->flags |= XCOFF_REF_REGULAR; |
3207 | if (xcoff_hash_table (info)->loader_section) | |
3208 | { | |
3209 | h->flags |= XCOFF_LDREL; | |
3210 | ++xcoff_hash_table (info)->ldrel_count; | |
3211 | } | |
fbc4fff4 | 3212 | |
252b5132 RH |
3213 | /* Mark the symbol to avoid garbage collection. */ |
3214 | if (! xcoff_mark_symbol (info, h)) | |
b34976b6 | 3215 | return FALSE; |
252b5132 | 3216 | |
b34976b6 | 3217 | return TRUE; |
252b5132 RH |
3218 | } |
3219 | ||
3220 | /* This function is called for each symbol to which the linker script | |
3221 | assigns a value. */ | |
3222 | ||
b34976b6 | 3223 | bfd_boolean |
116c20d2 NC |
3224 | bfd_xcoff_record_link_assignment (bfd *output_bfd, |
3225 | struct bfd_link_info *info, | |
3226 | const char *name) | |
252b5132 RH |
3227 | { |
3228 | struct xcoff_link_hash_entry *h; | |
3229 | ||
9bd09e22 | 3230 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
b34976b6 | 3231 | return TRUE; |
252b5132 | 3232 | |
b34976b6 AM |
3233 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, TRUE, TRUE, |
3234 | FALSE); | |
252b5132 | 3235 | if (h == NULL) |
b34976b6 | 3236 | return FALSE; |
252b5132 RH |
3237 | |
3238 | h->flags |= XCOFF_DEF_REGULAR; | |
3239 | ||
b34976b6 | 3240 | return TRUE; |
252b5132 RH |
3241 | } |
3242 | ||
b64232cc RS |
3243 | /* An xcoff_link_hash_traverse callback for which DATA points to an |
3244 | xcoff_loader_info. Mark all symbols that should be automatically | |
3245 | exported. */ | |
3246 | ||
3247 | static bfd_boolean | |
3248 | xcoff_mark_auto_exports (struct xcoff_link_hash_entry *h, void *data) | |
3249 | { | |
3250 | struct xcoff_loader_info *ldinfo; | |
3251 | ||
3252 | ldinfo = (struct xcoff_loader_info *) data; | |
ee698300 | 3253 | if (xcoff_auto_export_p (ldinfo->info, h, ldinfo->auto_export_flags)) |
b64232cc RS |
3254 | { |
3255 | if (!xcoff_mark_symbol (ldinfo->info, h)) | |
3256 | ldinfo->failed = TRUE; | |
3257 | } | |
3258 | return TRUE; | |
3259 | } | |
3260 | ||
116c20d2 | 3261 | /* Add a symbol to the .loader symbols, if necessary. */ |
252b5132 | 3262 | |
5b49f6dc RS |
3263 | /* INPUT_BFD has an external symbol associated with hash table entry H |
3264 | and csect CSECT. Return true if INPUT_BFD defines H. */ | |
3265 | ||
3266 | static bfd_boolean | |
3267 | xcoff_final_definition_p (bfd *input_bfd, struct xcoff_link_hash_entry *h, | |
3268 | asection *csect) | |
3269 | { | |
3270 | switch (h->root.type) | |
3271 | { | |
3272 | case bfd_link_hash_defined: | |
3273 | case bfd_link_hash_defweak: | |
3274 | /* No input bfd owns absolute symbols. They are written by | |
3275 | xcoff_write_global_symbol instead. */ | |
3276 | return (!bfd_is_abs_section (csect) | |
3277 | && h->root.u.def.section == csect); | |
3278 | ||
3279 | case bfd_link_hash_common: | |
3280 | return h->root.u.c.p->section->owner == input_bfd; | |
3281 | ||
3282 | case bfd_link_hash_undefined: | |
3283 | case bfd_link_hash_undefweak: | |
3284 | /* We can't treat undef.abfd as the owner because that bfd | |
3285 | might be a dynamic object. Allow any bfd to claim it. */ | |
3286 | return TRUE; | |
3287 | ||
3288 | default: | |
3289 | abort (); | |
3290 | } | |
3291 | } | |
3292 | ||
b3d1832c RS |
3293 | /* See if H should have a loader symbol associated with it. */ |
3294 | ||
116c20d2 | 3295 | static bfd_boolean |
b3d1832c RS |
3296 | xcoff_build_ldsym (struct xcoff_loader_info *ldinfo, |
3297 | struct xcoff_link_hash_entry *h) | |
252b5132 | 3298 | { |
986f0783 | 3299 | size_t amt; |
252b5132 | 3300 | |
b3d1832c | 3301 | /* Warn if this symbol is exported but not defined. */ |
116c20d2 | 3302 | if ((h->flags & XCOFF_EXPORT) != 0 |
858ef0ce | 3303 | && (h->flags & XCOFF_WAS_UNDEFINED) != 0) |
116c20d2 | 3304 | { |
4eca0228 | 3305 | _bfd_error_handler |
858ef0ce RS |
3306 | (_("warning: attempt to export undefined symbol `%s'"), |
3307 | h->root.root.string); | |
858ef0ce | 3308 | return TRUE; |
252b5132 RH |
3309 | } |
3310 | ||
116c20d2 NC |
3311 | /* We need to add a symbol to the .loader section if it is mentioned |
3312 | in a reloc which we are copying to the .loader section and it was | |
3313 | not defined or common, or if it is the entry point, or if it is | |
3314 | being exported. */ | |
116c20d2 NC |
3315 | if (((h->flags & XCOFF_LDREL) == 0 |
3316 | || h->root.type == bfd_link_hash_defined | |
3317 | || h->root.type == bfd_link_hash_defweak | |
3318 | || h->root.type == bfd_link_hash_common) | |
3319 | && (h->flags & XCOFF_ENTRY) == 0 | |
3320 | && (h->flags & XCOFF_EXPORT) == 0) | |
116c20d2 | 3321 | return TRUE; |
252b5132 | 3322 | |
116c20d2 NC |
3323 | /* We need to add this symbol to the .loader symbols. */ |
3324 | ||
3325 | BFD_ASSERT (h->ldsym == NULL); | |
3326 | amt = sizeof (struct internal_ldsym); | |
3327 | h->ldsym = bfd_zalloc (ldinfo->output_bfd, amt); | |
3328 | if (h->ldsym == NULL) | |
252b5132 | 3329 | { |
116c20d2 NC |
3330 | ldinfo->failed = TRUE; |
3331 | return FALSE; | |
3332 | } | |
252b5132 | 3333 | |
116c20d2 | 3334 | if ((h->flags & XCOFF_IMPORT) != 0) |
670562e9 RS |
3335 | { |
3336 | /* Give imported descriptors class XMC_DS rather than XMC_UA. */ | |
3337 | if ((h->flags & XCOFF_DESCRIPTOR) != 0) | |
3338 | h->smclas = XMC_DS; | |
3339 | h->ldsym->l_ifile = h->ldindx; | |
3340 | } | |
252b5132 | 3341 | |
116c20d2 NC |
3342 | /* The first 3 symbol table indices are reserved to indicate the |
3343 | data, text and bss sections. */ | |
3344 | h->ldindx = ldinfo->ldsym_count + 3; | |
252b5132 | 3345 | |
116c20d2 | 3346 | ++ldinfo->ldsym_count; |
252b5132 | 3347 | |
116c20d2 NC |
3348 | if (! bfd_xcoff_put_ldsymbol_name (ldinfo->output_bfd, ldinfo, |
3349 | h->ldsym, h->root.root.string)) | |
3350 | return FALSE; | |
252b5132 | 3351 | |
116c20d2 | 3352 | h->flags |= XCOFF_BUILT_LDSYM; |
b3d1832c RS |
3353 | return TRUE; |
3354 | } | |
3355 | ||
3356 | /* An xcoff_htab_traverse callback that is called for each symbol | |
3357 | once garbage collection is complete. */ | |
3358 | ||
3359 | static bfd_boolean | |
3360 | xcoff_post_gc_symbol (struct xcoff_link_hash_entry *h, void * p) | |
3361 | { | |
3362 | struct xcoff_loader_info *ldinfo = (struct xcoff_loader_info *) p; | |
3363 | ||
b3d1832c RS |
3364 | /* __rtinit, this symbol has special handling. */ |
3365 | if (h->flags & XCOFF_RTINIT) | |
3366 | return TRUE; | |
3367 | ||
b3d1832c RS |
3368 | /* We don't want to garbage collect symbols which are not defined in |
3369 | XCOFF files. This is a convenient place to mark them. */ | |
3370 | if (xcoff_hash_table (ldinfo->info)->gc | |
3371 | && (h->flags & XCOFF_MARK) == 0 | |
3372 | && (h->root.type == bfd_link_hash_defined | |
3373 | || h->root.type == bfd_link_hash_defweak) | |
3374 | && (h->root.u.def.section->owner == NULL | |
3375 | || (h->root.u.def.section->owner->xvec | |
3376 | != ldinfo->info->output_bfd->xvec))) | |
3377 | h->flags |= XCOFF_MARK; | |
3378 | ||
3379 | /* Skip discarded symbols. */ | |
3380 | if (xcoff_hash_table (ldinfo->info)->gc | |
3381 | && (h->flags & XCOFF_MARK) == 0) | |
3382 | return TRUE; | |
3383 | ||
3384 | /* If this is still a common symbol, and it wasn't garbage | |
3385 | collected, we need to actually allocate space for it in the .bss | |
3386 | section. */ | |
3387 | if (h->root.type == bfd_link_hash_common | |
3388 | && h->root.u.c.p->section->size == 0) | |
3389 | { | |
3390 | BFD_ASSERT (bfd_is_com_section (h->root.u.c.p->section)); | |
3391 | h->root.u.c.p->section->size = h->root.u.c.size; | |
3392 | } | |
3393 | ||
3394 | if (xcoff_hash_table (ldinfo->info)->loader_section) | |
3395 | { | |
ee698300 | 3396 | if (xcoff_auto_export_p (ldinfo->info, h, ldinfo->auto_export_flags)) |
b3d1832c RS |
3397 | h->flags |= XCOFF_EXPORT; |
3398 | ||
3399 | if (!xcoff_build_ldsym (ldinfo, h)) | |
3400 | return FALSE; | |
3401 | } | |
252b5132 | 3402 | |
116c20d2 NC |
3403 | return TRUE; |
3404 | } | |
e450936a RS |
3405 | |
3406 | /* INPUT_BFD includes XCOFF symbol ISYM, which is associated with linker | |
3407 | hash table entry H and csect CSECT. AUX contains ISYM's auxillary | |
3408 | csect information, if any. NAME is the function's name if the name | |
3409 | is stored in the .debug section, otherwise it is null. | |
3410 | ||
3411 | Return 1 if we should include an appropriately-adjusted ISYM | |
3412 | in the output file, 0 if we should discard ISYM, or -1 if an | |
3413 | error occured. */ | |
3414 | ||
3415 | static int | |
3416 | xcoff_keep_symbol_p (struct bfd_link_info *info, bfd *input_bfd, | |
3417 | struct internal_syment *isym, | |
3418 | union internal_auxent *aux, | |
3419 | struct xcoff_link_hash_entry *h, | |
3420 | asection *csect, const char *name) | |
3421 | { | |
3422 | int smtyp; | |
3423 | ||
3424 | /* If we are skipping this csect, we want to strip the symbol too. */ | |
3425 | if (csect == NULL) | |
3426 | return 0; | |
3427 | ||
3428 | /* Likewise if we garbage-collected the csect. */ | |
3429 | if (xcoff_hash_table (info)->gc | |
3430 | && !bfd_is_abs_section (csect) | |
3431 | && !bfd_is_und_section (csect) | |
3432 | && (csect->flags & SEC_MARK) == 0) | |
3433 | return 0; | |
3434 | ||
3435 | /* An XCOFF linker always removes C_STAT symbols. */ | |
3436 | if (isym->n_sclass == C_STAT) | |
3437 | return 0; | |
3438 | ||
3439 | /* We generate the TOC anchor separately. */ | |
3440 | if (isym->n_sclass == C_HIDEXT | |
3441 | && aux->x_csect.x_smclas == XMC_TC0) | |
3442 | return 0; | |
3443 | ||
3444 | /* If we are stripping all symbols, we want to discard this one. */ | |
3445 | if (info->strip == strip_all) | |
3446 | return 0; | |
3447 | ||
5b49f6dc | 3448 | /* Discard symbols that are defined elsewhere. */ |
8602d4fe | 3449 | if (EXTERN_SYM_P (isym->n_sclass)) |
5b49f6dc RS |
3450 | { |
3451 | if ((h->flags & XCOFF_ALLOCATED) != 0) | |
3452 | return 0; | |
3453 | if (!xcoff_final_definition_p (input_bfd, h, csect)) | |
3454 | return 0; | |
3455 | } | |
e450936a RS |
3456 | |
3457 | /* If we're discarding local symbols, check whether ISYM is local. */ | |
5b49f6dc | 3458 | smtyp = SMTYP_SMTYP (aux->x_csect.x_smtyp); |
e450936a | 3459 | if (info->discard == discard_all |
8602d4fe | 3460 | && !EXTERN_SYM_P (isym->n_sclass) |
e450936a RS |
3461 | && (isym->n_sclass != C_HIDEXT || smtyp != XTY_SD)) |
3462 | return 0; | |
3463 | ||
3464 | /* If we're stripping debugging symbols, check whether ISYM is one. */ | |
3465 | if (info->strip == strip_debugger | |
3466 | && isym->n_scnum == N_DEBUG) | |
3467 | return 0; | |
3468 | ||
3469 | /* If we are stripping symbols based on name, check how ISYM's | |
3470 | name should be handled. */ | |
3471 | if (info->strip == strip_some | |
3472 | || info->discard == discard_l) | |
3473 | { | |
3474 | char buf[SYMNMLEN + 1]; | |
3475 | ||
3476 | if (name == NULL) | |
3477 | { | |
3478 | name = _bfd_coff_internal_syment_name (input_bfd, isym, buf); | |
3479 | if (name == NULL) | |
3480 | return -1; | |
3481 | } | |
3482 | ||
3483 | if (info->strip == strip_some | |
3484 | && bfd_hash_lookup (info->keep_hash, name, FALSE, FALSE) == NULL) | |
3485 | return 0; | |
3486 | ||
3487 | if (info->discard == discard_l | |
8602d4fe | 3488 | && !EXTERN_SYM_P (isym->n_sclass) |
e450936a RS |
3489 | && (isym->n_sclass != C_HIDEXT || smtyp != XTY_SD) |
3490 | && bfd_is_local_label_name (input_bfd, name)) | |
3491 | return 0; | |
3492 | } | |
3493 | ||
3494 | return 1; | |
3495 | } | |
3496 | ||
b3d1832c RS |
3497 | /* Lay out the .loader section, filling in the header and the import paths. |
3498 | LIBPATH is as for bfd_xcoff_size_dynamic_sections. */ | |
3499 | ||
3500 | static bfd_boolean | |
3501 | xcoff_build_loader_section (struct xcoff_loader_info *ldinfo, | |
3502 | const char *libpath) | |
3503 | { | |
3504 | bfd *output_bfd; | |
3505 | struct xcoff_link_hash_table *htab; | |
3506 | struct internal_ldhdr *ldhdr; | |
3507 | struct xcoff_import_file *fl; | |
3508 | bfd_size_type stoff; | |
3509 | size_t impsize, impcount; | |
3510 | asection *lsec; | |
3511 | char *out; | |
3512 | ||
3513 | /* Work out the size of the import file names. Each import file ID | |
3514 | consists of three null terminated strings: the path, the file | |
3515 | name, and the archive member name. The first entry in the list | |
3516 | of names is the path to use to find objects, which the linker has | |
3517 | passed in as the libpath argument. For some reason, the path | |
3518 | entry in the other import file names appears to always be empty. */ | |
3519 | output_bfd = ldinfo->output_bfd; | |
3520 | htab = xcoff_hash_table (ldinfo->info); | |
3521 | impsize = strlen (libpath) + 3; | |
3522 | impcount = 1; | |
3523 | for (fl = htab->imports; fl != NULL; fl = fl->next) | |
3524 | { | |
3525 | ++impcount; | |
3526 | impsize += (strlen (fl->path) | |
3527 | + strlen (fl->file) | |
3528 | + strlen (fl->member) | |
3529 | + 3); | |
3530 | } | |
3531 | ||
3532 | /* Set up the .loader section header. */ | |
3533 | ldhdr = &htab->ldhdr; | |
3534 | ldhdr->l_version = bfd_xcoff_ldhdr_version(output_bfd); | |
3535 | ldhdr->l_nsyms = ldinfo->ldsym_count; | |
3536 | ldhdr->l_nreloc = htab->ldrel_count; | |
3537 | ldhdr->l_istlen = impsize; | |
3538 | ldhdr->l_nimpid = impcount; | |
3539 | ldhdr->l_impoff = (bfd_xcoff_ldhdrsz (output_bfd) | |
3540 | + ldhdr->l_nsyms * bfd_xcoff_ldsymsz (output_bfd) | |
3541 | + ldhdr->l_nreloc * bfd_xcoff_ldrelsz (output_bfd)); | |
3542 | ldhdr->l_stlen = ldinfo->string_size; | |
3543 | stoff = ldhdr->l_impoff + impsize; | |
3544 | if (ldinfo->string_size == 0) | |
3545 | ldhdr->l_stoff = 0; | |
3546 | else | |
3547 | ldhdr->l_stoff = stoff; | |
3548 | ||
3549 | /* 64 bit elements to ldhdr | |
3550 | The swap out routine for 32 bit will ignore them. | |
3551 | Nothing fancy, symbols come after the header and relocs come | |
3552 | after symbols. */ | |
3553 | ldhdr->l_symoff = bfd_xcoff_ldhdrsz (output_bfd); | |
3554 | ldhdr->l_rldoff = (bfd_xcoff_ldhdrsz (output_bfd) | |
3555 | + ldhdr->l_nsyms * bfd_xcoff_ldsymsz (output_bfd)); | |
3556 | ||
3557 | /* We now know the final size of the .loader section. Allocate | |
3558 | space for it. */ | |
3559 | lsec = htab->loader_section; | |
3560 | lsec->size = stoff + ldhdr->l_stlen; | |
3561 | lsec->contents = bfd_zalloc (output_bfd, lsec->size); | |
3562 | if (lsec->contents == NULL) | |
3563 | return FALSE; | |
3564 | ||
3565 | /* Set up the header. */ | |
3566 | bfd_xcoff_swap_ldhdr_out (output_bfd, ldhdr, lsec->contents); | |
3567 | ||
3568 | /* Set up the import file names. */ | |
3569 | out = (char *) lsec->contents + ldhdr->l_impoff; | |
3570 | strcpy (out, libpath); | |
3571 | out += strlen (libpath) + 1; | |
3572 | *out++ = '\0'; | |
3573 | *out++ = '\0'; | |
3574 | for (fl = htab->imports; fl != NULL; fl = fl->next) | |
3575 | { | |
3576 | const char *s; | |
3577 | ||
3578 | s = fl->path; | |
3579 | while ((*out++ = *s++) != '\0') | |
3580 | ; | |
3581 | s = fl->file; | |
3582 | while ((*out++ = *s++) != '\0') | |
3583 | ; | |
3584 | s = fl->member; | |
3585 | while ((*out++ = *s++) != '\0') | |
3586 | ; | |
3587 | } | |
3588 | ||
3589 | BFD_ASSERT ((bfd_size_type) ((bfd_byte *) out - lsec->contents) == stoff); | |
3590 | ||
3591 | /* Set up the symbol string table. */ | |
3592 | if (ldinfo->string_size > 0) | |
3593 | { | |
3594 | memcpy (out, ldinfo->strings, ldinfo->string_size); | |
3595 | free (ldinfo->strings); | |
3596 | ldinfo->strings = NULL; | |
3597 | } | |
3598 | ||
3599 | /* We can't set up the symbol table or the relocs yet, because we | |
3600 | don't yet know the final position of the various sections. The | |
3601 | .loader symbols are written out when the corresponding normal | |
3602 | symbols are written out in xcoff_link_input_bfd or | |
3603 | xcoff_write_global_symbol. The .loader relocs are written out | |
3604 | when the corresponding normal relocs are handled in | |
3605 | xcoff_link_input_bfd. */ | |
3606 | ||
3607 | return TRUE; | |
3608 | } | |
3609 | ||
116c20d2 NC |
3610 | /* Build the .loader section. This is called by the XCOFF linker |
3611 | emulation before_allocation routine. We must set the size of the | |
3612 | .loader section before the linker lays out the output file. | |
3613 | LIBPATH is the library path to search for shared objects; this is | |
3614 | normally built from the -L arguments passed to the linker. ENTRY | |
3615 | is the name of the entry point symbol (the -e linker option). | |
3616 | FILE_ALIGN is the alignment to use for sections within the file | |
3617 | (the -H linker option). MAXSTACK is the maximum stack size (the | |
3618 | -bmaxstack linker option). MAXDATA is the maximum data size (the | |
3619 | -bmaxdata linker option). GC is whether to do garbage collection | |
3620 | (the -bgc linker option). MODTYPE is the module type (the | |
3621 | -bmodtype linker option). TEXTRO is whether the text section must | |
b64232cc RS |
3622 | be read only (the -btextro linker option). AUTO_EXPORT_FLAGS |
3623 | is a mask of XCOFF_EXPALL and XCOFF_EXPFULL. SPECIAL_SECTIONS | |
3624 | is set by this routine to csects with magic names like _end. */ | |
252b5132 | 3625 | |
116c20d2 NC |
3626 | bfd_boolean |
3627 | bfd_xcoff_size_dynamic_sections (bfd *output_bfd, | |
3628 | struct bfd_link_info *info, | |
3629 | const char *libpath, | |
3630 | const char *entry, | |
3631 | unsigned long file_align, | |
3632 | unsigned long maxstack, | |
3633 | unsigned long maxdata, | |
3634 | bfd_boolean gc, | |
3635 | int modtype, | |
3636 | bfd_boolean textro, | |
b64232cc | 3637 | unsigned int auto_export_flags, |
116c20d2 NC |
3638 | asection **special_sections, |
3639 | bfd_boolean rtld) | |
3640 | { | |
116c20d2 NC |
3641 | struct xcoff_loader_info ldinfo; |
3642 | int i; | |
116c20d2 NC |
3643 | asection *sec; |
3644 | bfd *sub; | |
3645 | struct bfd_strtab_hash *debug_strtab; | |
3646 | bfd_byte *debug_contents = NULL; | |
986f0783 | 3647 | size_t amt; |
252b5132 | 3648 | |
116c20d2 NC |
3649 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
3650 | { | |
3651 | for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++) | |
3652 | special_sections[i] = NULL; | |
3653 | return TRUE; | |
3654 | } | |
252b5132 | 3655 | |
116c20d2 NC |
3656 | ldinfo.failed = FALSE; |
3657 | ldinfo.output_bfd = output_bfd; | |
3658 | ldinfo.info = info; | |
b64232cc | 3659 | ldinfo.auto_export_flags = auto_export_flags; |
116c20d2 NC |
3660 | ldinfo.ldsym_count = 0; |
3661 | ldinfo.string_size = 0; | |
3662 | ldinfo.strings = NULL; | |
3663 | ldinfo.string_alc = 0; | |
252b5132 | 3664 | |
116c20d2 NC |
3665 | xcoff_data (output_bfd)->maxstack = maxstack; |
3666 | xcoff_data (output_bfd)->maxdata = maxdata; | |
3667 | xcoff_data (output_bfd)->modtype = modtype; | |
eb1e0e80 | 3668 | |
116c20d2 NC |
3669 | xcoff_hash_table (info)->file_align = file_align; |
3670 | xcoff_hash_table (info)->textro = textro; | |
858ef0ce | 3671 | xcoff_hash_table (info)->rtld = rtld; |
252b5132 | 3672 | |
116c20d2 | 3673 | /* __rtinit */ |
b3d1832c RS |
3674 | if (xcoff_hash_table (info)->loader_section |
3675 | && (info->init_function || info->fini_function || rtld)) | |
116c20d2 NC |
3676 | { |
3677 | struct xcoff_link_hash_entry *hsym; | |
3678 | struct internal_ldsym *ldsym; | |
252b5132 | 3679 | |
116c20d2 NC |
3680 | hsym = xcoff_link_hash_lookup (xcoff_hash_table (info), |
3681 | "__rtinit", FALSE, FALSE, TRUE); | |
3682 | if (hsym == NULL) | |
252b5132 | 3683 | { |
4eca0228 | 3684 | _bfd_error_handler |
116c20d2 NC |
3685 | (_("error: undefined symbol __rtinit")); |
3686 | return FALSE; | |
252b5132 | 3687 | } |
252b5132 | 3688 | |
116c20d2 NC |
3689 | xcoff_mark_symbol (info, hsym); |
3690 | hsym->flags |= (XCOFF_DEF_REGULAR | XCOFF_RTINIT); | |
252b5132 | 3691 | |
116c20d2 NC |
3692 | /* __rtinit initialized. */ |
3693 | amt = sizeof (* ldsym); | |
3694 | ldsym = bfd_malloc (amt); | |
252b5132 | 3695 | |
116c20d2 NC |
3696 | ldsym->l_value = 0; /* Will be filled in later. */ |
3697 | ldsym->l_scnum = 2; /* Data section. */ | |
3698 | ldsym->l_smtype = XTY_SD; /* Csect section definition. */ | |
3699 | ldsym->l_smclas = 5; /* .rw. */ | |
3700 | ldsym->l_ifile = 0; /* Special system loader symbol. */ | |
3701 | ldsym->l_parm = 0; /* NA. */ | |
252b5132 | 3702 | |
116c20d2 NC |
3703 | /* Force __rtinit to be the first symbol in the loader symbol table |
3704 | See xcoff_build_ldsyms | |
b34976b6 | 3705 | |
116c20d2 NC |
3706 | The first 3 symbol table indices are reserved to indicate the data, |
3707 | text and bss sections. */ | |
3708 | BFD_ASSERT (0 == ldinfo.ldsym_count); | |
9a4c7f16 | 3709 | |
116c20d2 NC |
3710 | hsym->ldindx = 3; |
3711 | ldinfo.ldsym_count = 1; | |
3712 | hsym->ldsym = ldsym; | |
9a4c7f16 | 3713 | |
116c20d2 NC |
3714 | if (! bfd_xcoff_put_ldsymbol_name (ldinfo.output_bfd, &ldinfo, |
3715 | hsym->ldsym, hsym->root.root.string)) | |
3716 | return FALSE; | |
9a4c7f16 | 3717 | |
116c20d2 NC |
3718 | /* This symbol is written out by xcoff_write_global_symbol |
3719 | Set stuff up so xcoff_write_global_symbol logic works. */ | |
3720 | hsym->flags |= XCOFF_DEF_REGULAR | XCOFF_MARK; | |
3721 | hsym->root.type = bfd_link_hash_defined; | |
3722 | hsym->root.u.def.value = 0; | |
3723 | } | |
9a4c7f16 | 3724 | |
116c20d2 | 3725 | /* Garbage collect unused sections. */ |
0e1862bb | 3726 | if (bfd_link_relocatable (info) || !gc) |
116c20d2 NC |
3727 | { |
3728 | gc = FALSE; | |
3729 | xcoff_hash_table (info)->gc = FALSE; | |
9a4c7f16 | 3730 | |
116c20d2 NC |
3731 | /* We still need to call xcoff_mark, in order to set ldrel_count |
3732 | correctly. */ | |
c72f2fb2 | 3733 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
3734 | { |
3735 | asection *o; | |
9a4c7f16 | 3736 | |
116c20d2 NC |
3737 | for (o = sub->sections; o != NULL; o = o->next) |
3738 | { | |
47dfb2ca RS |
3739 | /* We shouldn't unconditionaly mark the TOC section. |
3740 | The output file should only have a TOC if either | |
3741 | (a) one of the input files did or (b) we end up | |
3742 | creating TOC references as part of the link process. */ | |
3743 | if (o != xcoff_hash_table (info)->toc_section | |
3744 | && (o->flags & SEC_MARK) == 0) | |
116c20d2 NC |
3745 | { |
3746 | if (! xcoff_mark (info, o)) | |
3747 | goto error_return; | |
3748 | } | |
3749 | } | |
3750 | } | |
3751 | } | |
3752 | else | |
3753 | { | |
7d504122 RS |
3754 | if (entry != NULL |
3755 | && !xcoff_mark_symbol_by_name (info, entry, XCOFF_ENTRY)) | |
3756 | goto error_return; | |
3757 | if (info->init_function != NULL | |
3758 | && !xcoff_mark_symbol_by_name (info, info->init_function, 0)) | |
3759 | goto error_return; | |
3760 | if (info->fini_function != NULL | |
3761 | && !xcoff_mark_symbol_by_name (info, info->fini_function, 0)) | |
116c20d2 | 3762 | goto error_return; |
b64232cc RS |
3763 | if (auto_export_flags != 0) |
3764 | { | |
3765 | xcoff_link_hash_traverse (xcoff_hash_table (info), | |
3766 | xcoff_mark_auto_exports, &ldinfo); | |
3767 | if (ldinfo.failed) | |
3768 | goto error_return; | |
3769 | } | |
116c20d2 NC |
3770 | xcoff_sweep (info); |
3771 | xcoff_hash_table (info)->gc = TRUE; | |
3772 | } | |
9a4c7f16 | 3773 | |
116c20d2 NC |
3774 | /* Return special sections to the caller. */ |
3775 | for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++) | |
3776 | { | |
3777 | sec = xcoff_hash_table (info)->special_sections[i]; | |
252b5132 | 3778 | |
116c20d2 NC |
3779 | if (sec != NULL |
3780 | && gc | |
3781 | && (sec->flags & SEC_MARK) == 0) | |
3782 | sec = NULL; | |
252b5132 | 3783 | |
116c20d2 NC |
3784 | special_sections[i] = sec; |
3785 | } | |
e92d460e | 3786 | |
116c20d2 NC |
3787 | if (info->input_bfds == NULL) |
3788 | /* I'm not sure what to do in this bizarre case. */ | |
3789 | return TRUE; | |
dc810e39 | 3790 | |
b3d1832c | 3791 | xcoff_link_hash_traverse (xcoff_hash_table (info), xcoff_post_gc_symbol, |
116c20d2 NC |
3792 | (void *) &ldinfo); |
3793 | if (ldinfo.failed) | |
3794 | goto error_return; | |
252b5132 | 3795 | |
b3d1832c RS |
3796 | if (xcoff_hash_table (info)->loader_section |
3797 | && !xcoff_build_loader_section (&ldinfo, libpath)) | |
116c20d2 | 3798 | goto error_return; |
252b5132 | 3799 | |
116c20d2 NC |
3800 | /* Allocate space for the magic sections. */ |
3801 | sec = xcoff_hash_table (info)->linkage_section; | |
3802 | if (sec->size > 0) | |
3803 | { | |
3804 | sec->contents = bfd_zalloc (output_bfd, sec->size); | |
3805 | if (sec->contents == NULL) | |
3806 | goto error_return; | |
252b5132 | 3807 | } |
116c20d2 NC |
3808 | sec = xcoff_hash_table (info)->toc_section; |
3809 | if (sec->size > 0) | |
252b5132 | 3810 | { |
116c20d2 NC |
3811 | sec->contents = bfd_zalloc (output_bfd, sec->size); |
3812 | if (sec->contents == NULL) | |
3813 | goto error_return; | |
3814 | } | |
3815 | sec = xcoff_hash_table (info)->descriptor_section; | |
3816 | if (sec->size > 0) | |
3817 | { | |
3818 | sec->contents = bfd_zalloc (output_bfd, sec->size); | |
3819 | if (sec->contents == NULL) | |
3820 | goto error_return; | |
3821 | } | |
252b5132 | 3822 | |
e450936a RS |
3823 | /* Now that we've done garbage collection, decide which symbols to keep, |
3824 | and figure out the contents of the .debug section. */ | |
116c20d2 | 3825 | debug_strtab = xcoff_hash_table (info)->debug_strtab; |
252b5132 | 3826 | |
c72f2fb2 | 3827 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
3828 | { |
3829 | asection *subdeb; | |
3830 | bfd_size_type symcount; | |
e450936a | 3831 | long *debug_index; |
116c20d2 | 3832 | asection **csectpp; |
3df13c4a | 3833 | unsigned int *lineno_counts; |
e450936a | 3834 | struct xcoff_link_hash_entry **sym_hash; |
116c20d2 NC |
3835 | bfd_byte *esym, *esymend; |
3836 | bfd_size_type symesz; | |
beb1bf64 | 3837 | |
f13a99db | 3838 | if (sub->xvec != info->output_bfd->xvec) |
116c20d2 | 3839 | continue; |
252b5132 | 3840 | |
e450936a RS |
3841 | if ((sub->flags & DYNAMIC) != 0 |
3842 | && !info->static_link) | |
3843 | continue; | |
252b5132 | 3844 | |
116c20d2 NC |
3845 | if (! _bfd_coff_get_external_symbols (sub)) |
3846 | goto error_return; | |
252b5132 | 3847 | |
116c20d2 | 3848 | symcount = obj_raw_syment_count (sub); |
e450936a | 3849 | debug_index = bfd_zalloc (sub, symcount * sizeof (long)); |
116c20d2 NC |
3850 | if (debug_index == NULL) |
3851 | goto error_return; | |
3852 | xcoff_data (sub)->debug_indices = debug_index; | |
252b5132 | 3853 | |
e450936a RS |
3854 | if (info->strip == strip_all |
3855 | || info->strip == strip_debugger | |
3856 | || info->discard == discard_all) | |
3857 | /* We're stripping all debugging information, so there's no need | |
3858 | to read SUB's .debug section. */ | |
3859 | subdeb = NULL; | |
3860 | else | |
3861 | { | |
3862 | /* Grab the contents of SUB's .debug section, if any. */ | |
3863 | subdeb = bfd_get_section_by_name (sub, ".debug"); | |
3864 | if (subdeb != NULL && subdeb->size > 0) | |
3865 | { | |
3866 | /* We use malloc and copy the names into the debug | |
3867 | stringtab, rather than bfd_alloc, because I expect | |
3868 | that, when linking many files together, many of the | |
3869 | strings will be the same. Storing the strings in the | |
3870 | hash table should save space in this case. */ | |
3871 | if (!bfd_malloc_and_get_section (sub, subdeb, &debug_contents)) | |
3872 | goto error_return; | |
3873 | } | |
3874 | } | |
252b5132 | 3875 | |
116c20d2 | 3876 | csectpp = xcoff_data (sub)->csects; |
3df13c4a | 3877 | lineno_counts = xcoff_data (sub)->lineno_counts; |
e450936a RS |
3878 | sym_hash = obj_xcoff_sym_hashes (sub); |
3879 | symesz = bfd_coff_symesz (sub); | |
3880 | esym = (bfd_byte *) obj_coff_external_syms (sub); | |
3881 | esymend = esym + symcount * symesz; | |
252b5132 | 3882 | |
e450936a | 3883 | while (esym < esymend) |
116c20d2 | 3884 | { |
e450936a RS |
3885 | struct internal_syment sym; |
3886 | union internal_auxent aux; | |
3df13c4a | 3887 | asection *csect; |
e450936a RS |
3888 | const char *name; |
3889 | int keep_p; | |
3890 | ||
3891 | bfd_coff_swap_sym_in (sub, esym, &sym); | |
252b5132 | 3892 | |
8602d4fe RS |
3893 | /* Read in the csect information, if any. */ |
3894 | if (CSECT_SYM_P (sym.n_sclass)) | |
116c20d2 | 3895 | { |
e450936a RS |
3896 | BFD_ASSERT (sym.n_numaux > 0); |
3897 | bfd_coff_swap_aux_in (sub, esym + symesz * sym.n_numaux, | |
3898 | sym.n_type, sym.n_sclass, | |
3899 | sym.n_numaux - 1, sym.n_numaux, &aux); | |
3900 | } | |
252b5132 | 3901 | |
e450936a RS |
3902 | /* If this symbol's name is stored in the debug section, |
3903 | get a pointer to it. */ | |
3904 | if (debug_contents != NULL | |
3905 | && sym._n._n_n._n_zeroes == 0 | |
3906 | && bfd_coff_symname_in_debug (sub, &sym)) | |
3907 | name = (const char *) debug_contents + sym._n._n_n._n_offset; | |
3908 | else | |
3909 | name = NULL; | |
252b5132 | 3910 | |
e450936a | 3911 | /* Decide whether to copy this symbol to the output file. */ |
3df13c4a | 3912 | csect = *csectpp; |
e450936a | 3913 | keep_p = xcoff_keep_symbol_p (info, sub, &sym, &aux, |
3df13c4a | 3914 | *sym_hash, csect, name); |
e450936a RS |
3915 | if (keep_p < 0) |
3916 | return FALSE; | |
252b5132 | 3917 | |
e450936a RS |
3918 | if (!keep_p) |
3919 | /* Use a debug_index of -2 to record that a symbol should | |
3920 | be stripped. */ | |
3921 | *debug_index = -2; | |
3922 | else | |
3923 | { | |
3924 | /* See whether we should store the symbol name in the | |
3925 | output .debug section. */ | |
3926 | if (name != NULL) | |
116c20d2 | 3927 | { |
116c20d2 | 3928 | bfd_size_type indx; |
252b5132 | 3929 | |
116c20d2 NC |
3930 | indx = _bfd_stringtab_add (debug_strtab, name, TRUE, TRUE); |
3931 | if (indx == (bfd_size_type) -1) | |
3932 | goto error_return; | |
3933 | *debug_index = indx; | |
3934 | } | |
e450936a RS |
3935 | else |
3936 | *debug_index = -1; | |
5b49f6dc RS |
3937 | if (*sym_hash != 0) |
3938 | (*sym_hash)->flags |= XCOFF_ALLOCATED; | |
3df13c4a RS |
3939 | if (*lineno_counts > 0) |
3940 | csect->output_section->lineno_count += *lineno_counts; | |
116c20d2 | 3941 | } |
e450936a RS |
3942 | |
3943 | esym += (sym.n_numaux + 1) * symesz; | |
3944 | csectpp += sym.n_numaux + 1; | |
3945 | sym_hash += sym.n_numaux + 1; | |
3df13c4a | 3946 | lineno_counts += sym.n_numaux + 1; |
e450936a | 3947 | debug_index += sym.n_numaux + 1; |
116c20d2 NC |
3948 | } |
3949 | ||
e450936a RS |
3950 | if (debug_contents) |
3951 | { | |
3952 | free (debug_contents); | |
3953 | debug_contents = NULL; | |
116c20d2 | 3954 | |
e450936a RS |
3955 | /* Clear the size of subdeb, so that it is not included directly |
3956 | in the output file. */ | |
3957 | subdeb->size = 0; | |
3958 | } | |
116c20d2 NC |
3959 | |
3960 | if (! info->keep_memory) | |
3961 | { | |
3962 | if (! _bfd_coff_free_symbols (sub)) | |
3963 | goto error_return; | |
3964 | } | |
dc810e39 | 3965 | } |
252b5132 | 3966 | |
116c20d2 NC |
3967 | if (info->strip != strip_all) |
3968 | xcoff_hash_table (info)->debug_section->size = | |
3969 | _bfd_stringtab_size (debug_strtab); | |
252b5132 | 3970 | |
b34976b6 | 3971 | return TRUE; |
116c20d2 NC |
3972 | |
3973 | error_return: | |
3974 | if (ldinfo.strings != NULL) | |
3975 | free (ldinfo.strings); | |
3976 | if (debug_contents != NULL) | |
3977 | free (debug_contents); | |
3978 | return FALSE; | |
252b5132 | 3979 | } |
252b5132 | 3980 | |
b34976b6 | 3981 | bfd_boolean |
116c20d2 NC |
3982 | bfd_xcoff_link_generate_rtinit (bfd *abfd, |
3983 | const char *init, | |
3984 | const char *fini, | |
3985 | bfd_boolean rtld) | |
252b5132 | 3986 | { |
116c20d2 | 3987 | struct bfd_in_memory *bim; |
252b5132 | 3988 | |
116c20d2 NC |
3989 | bim = bfd_malloc ((bfd_size_type) sizeof (* bim)); |
3990 | if (bim == NULL) | |
3991 | return FALSE; | |
252b5132 | 3992 | |
116c20d2 NC |
3993 | bim->size = 0; |
3994 | bim->buffer = 0; | |
252b5132 | 3995 | |
c72f2fb2 | 3996 | abfd->link.next = 0; |
116c20d2 NC |
3997 | abfd->format = bfd_object; |
3998 | abfd->iostream = (void *) bim; | |
3999 | abfd->flags = BFD_IN_MEMORY; | |
65077aa8 | 4000 | abfd->iovec = &_bfd_memory_iovec; |
116c20d2 | 4001 | abfd->direction = write_direction; |
65077aa8 | 4002 | abfd->origin = 0; |
116c20d2 | 4003 | abfd->where = 0; |
252b5132 | 4004 | |
116c20d2 NC |
4005 | if (! bfd_xcoff_generate_rtinit (abfd, init, fini, rtld)) |
4006 | return FALSE; | |
252b5132 | 4007 | |
116c20d2 NC |
4008 | /* need to reset to unknown or it will not be read back in correctly */ |
4009 | abfd->format = bfd_unknown; | |
4010 | abfd->direction = read_direction; | |
4011 | abfd->where = 0; | |
252b5132 | 4012 | |
116c20d2 NC |
4013 | return TRUE; |
4014 | } | |
4015 | \f | |
b3d1832c RS |
4016 | /* Return the section that defines H. Return null if no section does. */ |
4017 | ||
4018 | static asection * | |
4019 | xcoff_symbol_section (struct xcoff_link_hash_entry *h) | |
4020 | { | |
4021 | switch (h->root.type) | |
4022 | { | |
4023 | case bfd_link_hash_defined: | |
4024 | case bfd_link_hash_defweak: | |
4025 | return h->root.u.def.section; | |
4026 | ||
4027 | case bfd_link_hash_common: | |
4028 | return h->root.u.c.p->section; | |
4029 | ||
4030 | default: | |
4031 | return NULL; | |
4032 | } | |
4033 | } | |
4034 | ||
4035 | /* Add a .loader relocation for input relocation IREL. If the loader | |
4036 | relocation should be against an output section, HSEC points to the | |
4037 | input section that IREL is against, otherwise HSEC is null. H is the | |
4038 | symbol that IREL is against, or null if it isn't against a global symbol. | |
4039 | REFERENCE_BFD is the bfd to use in error messages about the relocation. */ | |
4040 | ||
4041 | static bfd_boolean | |
baf9bed3 | 4042 | xcoff_create_ldrel (bfd *output_bfd, struct xcoff_final_link_info *flinfo, |
b3d1832c RS |
4043 | asection *output_section, bfd *reference_bfd, |
4044 | struct internal_reloc *irel, asection *hsec, | |
4045 | struct xcoff_link_hash_entry *h) | |
4046 | { | |
4047 | struct internal_ldrel ldrel; | |
4048 | ||
4049 | ldrel.l_vaddr = irel->r_vaddr; | |
4050 | if (hsec != NULL) | |
4051 | { | |
4052 | const char *secname; | |
4053 | ||
4054 | secname = hsec->output_section->name; | |
4055 | if (strcmp (secname, ".text") == 0) | |
4056 | ldrel.l_symndx = 0; | |
4057 | else if (strcmp (secname, ".data") == 0) | |
4058 | ldrel.l_symndx = 1; | |
4059 | else if (strcmp (secname, ".bss") == 0) | |
4060 | ldrel.l_symndx = 2; | |
4061 | else | |
4062 | { | |
4eca0228 | 4063 | _bfd_error_handler |
695344c0 | 4064 | /* xgettext:c-format */ |
871b3ab2 | 4065 | (_("%pB: loader reloc in unrecognized section `%s'"), |
b3d1832c RS |
4066 | reference_bfd, secname); |
4067 | bfd_set_error (bfd_error_nonrepresentable_section); | |
4068 | return FALSE; | |
4069 | } | |
4070 | } | |
4071 | else if (h != NULL) | |
4072 | { | |
4073 | if (h->ldindx < 0) | |
4074 | { | |
4eca0228 | 4075 | _bfd_error_handler |
695344c0 | 4076 | /* xgettext:c-format */ |
871b3ab2 | 4077 | (_("%pB: `%s' in loader reloc but not loader sym"), |
b3d1832c RS |
4078 | reference_bfd, h->root.root.string); |
4079 | bfd_set_error (bfd_error_bad_value); | |
4080 | return FALSE; | |
4081 | } | |
4082 | ldrel.l_symndx = h->ldindx; | |
4083 | } | |
4084 | else | |
4085 | ldrel.l_symndx = -(bfd_size_type) 1; | |
4086 | ||
4087 | ldrel.l_rtype = (irel->r_size << 8) | irel->r_type; | |
4088 | ldrel.l_rsecnm = output_section->target_index; | |
baf9bed3 | 4089 | if (xcoff_hash_table (flinfo->info)->textro |
b3d1832c RS |
4090 | && strcmp (output_section->name, ".text") == 0) |
4091 | { | |
4eca0228 | 4092 | _bfd_error_handler |
695344c0 | 4093 | /* xgettext:c-format */ |
871b3ab2 | 4094 | (_("%pB: loader reloc in read-only section %pA"), |
b3d1832c RS |
4095 | reference_bfd, output_section); |
4096 | bfd_set_error (bfd_error_invalid_operation); | |
4097 | return FALSE; | |
4098 | } | |
baf9bed3 JB |
4099 | bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, flinfo->ldrel); |
4100 | flinfo->ldrel += bfd_xcoff_ldrelsz (output_bfd); | |
b3d1832c RS |
4101 | return TRUE; |
4102 | } | |
4103 | ||
116c20d2 NC |
4104 | /* Link an input file into the linker output file. This function |
4105 | handles all the sections and relocations of the input file at once. */ | |
252b5132 | 4106 | |
116c20d2 | 4107 | static bfd_boolean |
baf9bed3 | 4108 | xcoff_link_input_bfd (struct xcoff_final_link_info *flinfo, |
116c20d2 NC |
4109 | bfd *input_bfd) |
4110 | { | |
4111 | bfd *output_bfd; | |
4112 | const char *strings; | |
4113 | bfd_size_type syment_base; | |
4114 | unsigned int n_tmask; | |
4115 | unsigned int n_btshft; | |
4116 | bfd_boolean copy, hash; | |
4117 | bfd_size_type isymesz; | |
4118 | bfd_size_type osymesz; | |
4119 | bfd_size_type linesz; | |
4120 | bfd_byte *esym; | |
4121 | bfd_byte *esym_end; | |
4122 | struct xcoff_link_hash_entry **sym_hash; | |
4123 | struct internal_syment *isymp; | |
4124 | asection **csectpp; | |
3df13c4a | 4125 | unsigned int *lineno_counts; |
e450936a | 4126 | long *debug_index; |
116c20d2 NC |
4127 | long *indexp; |
4128 | unsigned long output_index; | |
4129 | bfd_byte *outsym; | |
4130 | unsigned int incls; | |
4131 | asection *oline; | |
4132 | bfd_boolean keep_syms; | |
4133 | asection *o; | |
252b5132 | 4134 | |
116c20d2 NC |
4135 | /* We can just skip DYNAMIC files, unless this is a static link. */ |
4136 | if ((input_bfd->flags & DYNAMIC) != 0 | |
baf9bed3 | 4137 | && ! flinfo->info->static_link) |
116c20d2 | 4138 | return TRUE; |
252b5132 | 4139 | |
116c20d2 | 4140 | /* Move all the symbols to the output file. */ |
baf9bed3 | 4141 | output_bfd = flinfo->output_bfd; |
116c20d2 NC |
4142 | strings = NULL; |
4143 | syment_base = obj_raw_syment_count (output_bfd); | |
4144 | isymesz = bfd_coff_symesz (input_bfd); | |
4145 | osymesz = bfd_coff_symesz (output_bfd); | |
4146 | linesz = bfd_coff_linesz (input_bfd); | |
4147 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
252b5132 | 4148 | |
116c20d2 NC |
4149 | n_tmask = coff_data (input_bfd)->local_n_tmask; |
4150 | n_btshft = coff_data (input_bfd)->local_n_btshft; | |
252b5132 | 4151 | |
116c20d2 NC |
4152 | /* Define macros so that ISFCN, et. al., macros work correctly. */ |
4153 | #define N_TMASK n_tmask | |
4154 | #define N_BTSHFT n_btshft | |
252b5132 | 4155 | |
116c20d2 | 4156 | copy = FALSE; |
baf9bed3 | 4157 | if (! flinfo->info->keep_memory) |
116c20d2 NC |
4158 | copy = TRUE; |
4159 | hash = TRUE; | |
b560e2ac | 4160 | if (flinfo->info->traditional_format) |
116c20d2 | 4161 | hash = FALSE; |
252b5132 | 4162 | |
116c20d2 NC |
4163 | if (! _bfd_coff_get_external_symbols (input_bfd)) |
4164 | return FALSE; | |
4165 | ||
e450936a RS |
4166 | /* Make one pass over the symbols and assign indices to symbols that |
4167 | we have decided to keep. Also use create .loader symbol information | |
4168 | and update information in hash table entries. */ | |
116c20d2 NC |
4169 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); |
4170 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
4171 | sym_hash = obj_xcoff_sym_hashes (input_bfd); | |
4172 | csectpp = xcoff_data (input_bfd)->csects; | |
4173 | debug_index = xcoff_data (input_bfd)->debug_indices; | |
baf9bed3 JB |
4174 | isymp = flinfo->internal_syms; |
4175 | indexp = flinfo->sym_indices; | |
116c20d2 | 4176 | output_index = syment_base; |
116c20d2 | 4177 | while (esym < esym_end) |
252b5132 | 4178 | { |
116c20d2 NC |
4179 | union internal_auxent aux; |
4180 | int smtyp = 0; | |
116c20d2 | 4181 | int add; |
252b5132 | 4182 | |
116c20d2 | 4183 | bfd_coff_swap_sym_in (input_bfd, (void *) esym, (void *) isymp); |
b34976b6 | 4184 | |
8602d4fe RS |
4185 | /* Read in the csect information, if any. */ |
4186 | if (CSECT_SYM_P (isymp->n_sclass)) | |
116c20d2 NC |
4187 | { |
4188 | BFD_ASSERT (isymp->n_numaux > 0); | |
4189 | bfd_coff_swap_aux_in (input_bfd, | |
4190 | (void *) (esym + isymesz * isymp->n_numaux), | |
4191 | isymp->n_type, isymp->n_sclass, | |
4192 | isymp->n_numaux - 1, isymp->n_numaux, | |
4193 | (void *) &aux); | |
b34976b6 | 4194 | |
116c20d2 NC |
4195 | smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); |
4196 | } | |
b34976b6 | 4197 | |
116c20d2 NC |
4198 | /* If this symbol is in the .loader section, swap out the |
4199 | .loader symbol information. If this is an external symbol | |
4200 | reference to a defined symbol, though, then wait until we get | |
4201 | to the definition. */ | |
8602d4fe | 4202 | if (EXTERN_SYM_P (isymp->n_sclass) |
116c20d2 NC |
4203 | && *sym_hash != NULL |
4204 | && (*sym_hash)->ldsym != NULL | |
5b49f6dc | 4205 | && xcoff_final_definition_p (input_bfd, *sym_hash, *csectpp)) |
116c20d2 NC |
4206 | { |
4207 | struct xcoff_link_hash_entry *h; | |
4208 | struct internal_ldsym *ldsym; | |
9e7b37b3 | 4209 | |
116c20d2 NC |
4210 | h = *sym_hash; |
4211 | ldsym = h->ldsym; | |
e450936a | 4212 | if (isymp->n_scnum > 0) |
116c20d2 NC |
4213 | { |
4214 | ldsym->l_scnum = (*csectpp)->output_section->target_index; | |
e450936a | 4215 | ldsym->l_value = (isymp->n_value |
116c20d2 NC |
4216 | + (*csectpp)->output_section->vma |
4217 | + (*csectpp)->output_offset | |
4218 | - (*csectpp)->vma); | |
252b5132 | 4219 | } |
116c20d2 | 4220 | else |
252b5132 | 4221 | { |
e450936a RS |
4222 | ldsym->l_scnum = isymp->n_scnum; |
4223 | ldsym->l_value = isymp->n_value; | |
252b5132 | 4224 | } |
252b5132 | 4225 | |
116c20d2 NC |
4226 | ldsym->l_smtype = smtyp; |
4227 | if (((h->flags & XCOFF_DEF_REGULAR) == 0 | |
4228 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) | |
4229 | || (h->flags & XCOFF_IMPORT) != 0) | |
4230 | ldsym->l_smtype |= L_IMPORT; | |
4231 | if (((h->flags & XCOFF_DEF_REGULAR) != 0 | |
4232 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) | |
4233 | || (h->flags & XCOFF_EXPORT) != 0) | |
4234 | ldsym->l_smtype |= L_EXPORT; | |
4235 | if ((h->flags & XCOFF_ENTRY) != 0) | |
4236 | ldsym->l_smtype |= L_ENTRY; | |
8602d4fe RS |
4237 | if (isymp->n_sclass == C_AIX_WEAKEXT) |
4238 | ldsym->l_smtype |= L_WEAK; | |
dc810e39 | 4239 | |
116c20d2 NC |
4240 | ldsym->l_smclas = aux.x_csect.x_smclas; |
4241 | ||
4242 | if (ldsym->l_ifile == (bfd_size_type) -1) | |
4243 | ldsym->l_ifile = 0; | |
4244 | else if (ldsym->l_ifile == 0) | |
252b5132 | 4245 | { |
116c20d2 NC |
4246 | if ((ldsym->l_smtype & L_IMPORT) == 0) |
4247 | ldsym->l_ifile = 0; | |
4248 | else | |
252b5132 | 4249 | { |
116c20d2 | 4250 | bfd *impbfd; |
252b5132 | 4251 | |
116c20d2 NC |
4252 | if (h->root.type == bfd_link_hash_defined |
4253 | || h->root.type == bfd_link_hash_defweak) | |
4254 | impbfd = h->root.u.def.section->owner; | |
4255 | else if (h->root.type == bfd_link_hash_undefined | |
4256 | || h->root.type == bfd_link_hash_undefweak) | |
4257 | impbfd = h->root.u.undef.abfd; | |
4258 | else | |
4259 | impbfd = NULL; | |
4260 | ||
4261 | if (impbfd == NULL) | |
4262 | ldsym->l_ifile = 0; | |
4263 | else | |
252b5132 | 4264 | { |
baf9bed3 | 4265 | BFD_ASSERT (impbfd->xvec == flinfo->output_bfd->xvec); |
116c20d2 | 4266 | ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; |
252b5132 RH |
4267 | } |
4268 | } | |
116c20d2 NC |
4269 | } |
4270 | ||
4271 | ldsym->l_parm = 0; | |
4272 | ||
4273 | BFD_ASSERT (h->ldindx >= 0); | |
baf9bed3 JB |
4274 | bfd_xcoff_swap_ldsym_out (flinfo->output_bfd, ldsym, |
4275 | (flinfo->ldsym | |
116c20d2 | 4276 | + ((h->ldindx - 3) |
baf9bed3 | 4277 | * bfd_xcoff_ldsymsz (flinfo->output_bfd)))); |
116c20d2 NC |
4278 | h->ldsym = NULL; |
4279 | ||
4280 | /* Fill in snentry now that we know the target_index. */ | |
4281 | if ((h->flags & XCOFF_ENTRY) != 0 | |
4282 | && (h->root.type == bfd_link_hash_defined | |
4283 | || h->root.type == bfd_link_hash_defweak)) | |
4284 | { | |
4285 | xcoff_data (output_bfd)->snentry = | |
4286 | h->root.u.def.section->output_section->target_index; | |
252b5132 RH |
4287 | } |
4288 | } | |
4289 | ||
e450936a RS |
4290 | add = 1 + isymp->n_numaux; |
4291 | ||
4292 | if (*debug_index == -2) | |
4293 | /* We've decided to strip this symbol. */ | |
4294 | *indexp = -1; | |
4295 | else | |
116c20d2 | 4296 | { |
e450936a RS |
4297 | /* Assign the next unused index to this symbol. */ |
4298 | *indexp = output_index; | |
dc810e39 | 4299 | |
8602d4fe | 4300 | if (EXTERN_SYM_P (isymp->n_sclass)) |
e450936a RS |
4301 | { |
4302 | BFD_ASSERT (*sym_hash != NULL); | |
4303 | (*sym_hash)->indx = output_index; | |
4304 | } | |
dc810e39 | 4305 | |
e450936a RS |
4306 | /* If this is a symbol in the TOC which we may have merged |
4307 | (class XMC_TC), remember the symbol index of the TOC | |
4308 | symbol. */ | |
4309 | if (isymp->n_sclass == C_HIDEXT | |
4310 | && aux.x_csect.x_smclas == XMC_TC | |
4311 | && *sym_hash != NULL) | |
4312 | { | |
4313 | BFD_ASSERT (((*sym_hash)->flags & XCOFF_SET_TOC) == 0); | |
4314 | BFD_ASSERT ((*sym_hash)->toc_section != NULL); | |
4315 | (*sym_hash)->u.toc_indx = output_index; | |
4316 | } | |
252b5132 | 4317 | |
e450936a | 4318 | output_index += add; |
116c20d2 | 4319 | } |
252b5132 | 4320 | |
e450936a RS |
4321 | esym += add * isymesz; |
4322 | isymp += add; | |
4323 | csectpp += add; | |
4324 | sym_hash += add; | |
4325 | debug_index += add; | |
4326 | ++indexp; | |
4327 | for (--add; add > 0; --add) | |
4328 | *indexp++ = -1; | |
4329 | } | |
4330 | ||
4331 | /* Now write out the symbols that we decided to keep. */ | |
4332 | ||
4333 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
4334 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
54e2dbe0 | 4335 | sym_hash = obj_xcoff_sym_hashes (input_bfd); |
baf9bed3 JB |
4336 | isymp = flinfo->internal_syms; |
4337 | indexp = flinfo->sym_indices; | |
e450936a | 4338 | csectpp = xcoff_data (input_bfd)->csects; |
3df13c4a | 4339 | lineno_counts = xcoff_data (input_bfd)->lineno_counts; |
e450936a | 4340 | debug_index = xcoff_data (input_bfd)->debug_indices; |
baf9bed3 | 4341 | outsym = flinfo->outsyms; |
e450936a RS |
4342 | incls = 0; |
4343 | oline = NULL; | |
4344 | while (esym < esym_end) | |
4345 | { | |
4346 | int add; | |
4347 | ||
4348 | add = 1 + isymp->n_numaux; | |
4349 | ||
4350 | if (*indexp < 0) | |
4351 | esym += add * isymesz; | |
4352 | else | |
252b5132 | 4353 | { |
e450936a RS |
4354 | struct internal_syment isym; |
4355 | int i; | |
116c20d2 | 4356 | |
e450936a RS |
4357 | /* Adjust the symbol in order to output it. */ |
4358 | isym = *isymp; | |
116c20d2 NC |
4359 | if (isym._n._n_n._n_zeroes == 0 |
4360 | && isym._n._n_n._n_offset != 0) | |
252b5132 | 4361 | { |
116c20d2 NC |
4362 | /* This symbol has a long name. Enter it in the string |
4363 | table we are building. If *debug_index != -1, the | |
4364 | name has already been entered in the .debug section. */ | |
e450936a | 4365 | if (*debug_index >= 0) |
116c20d2 NC |
4366 | isym._n._n_n._n_offset = *debug_index; |
4367 | else | |
4368 | { | |
4369 | const char *name; | |
4370 | bfd_size_type indx; | |
4371 | ||
4372 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, NULL); | |
4373 | ||
4374 | if (name == NULL) | |
4375 | return FALSE; | |
baf9bed3 | 4376 | indx = _bfd_stringtab_add (flinfo->strtab, name, hash, copy); |
116c20d2 NC |
4377 | if (indx == (bfd_size_type) -1) |
4378 | return FALSE; | |
4379 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
252b5132 RH |
4380 | } |
4381 | } | |
116c20d2 | 4382 | |
54e2dbe0 RS |
4383 | /* Make __rtinit C_HIDEXT rather than C_EXT. This avoids |
4384 | multiple definition problems when linking a shared object | |
4385 | statically. (The native linker doesn't enter __rtinit into | |
4386 | the normal table at all, but having a local symbol can make | |
4387 | the objdump output easier to read.) */ | |
4388 | if (isym.n_sclass == C_EXT | |
4389 | && *sym_hash | |
4390 | && ((*sym_hash)->flags & XCOFF_RTINIT) != 0) | |
4391 | isym.n_sclass = C_HIDEXT; | |
4392 | ||
116c20d2 NC |
4393 | /* The value of a C_FILE symbol is the symbol index of the |
4394 | next C_FILE symbol. The value of the last C_FILE symbol | |
4395 | is -1. We try to get this right, below, just before we | |
4396 | write the symbols out, but in the general case we may | |
4397 | have to write the symbol out twice. */ | |
4398 | if (isym.n_sclass == C_FILE) | |
4399 | { | |
baf9bed3 JB |
4400 | if (flinfo->last_file_index != -1 |
4401 | && flinfo->last_file.n_value != (bfd_vma) *indexp) | |
116c20d2 NC |
4402 | { |
4403 | /* We must correct the value of the last C_FILE entry. */ | |
baf9bed3 JB |
4404 | flinfo->last_file.n_value = *indexp; |
4405 | if ((bfd_size_type) flinfo->last_file_index >= syment_base) | |
116c20d2 NC |
4406 | { |
4407 | /* The last C_FILE symbol is in this input file. */ | |
4408 | bfd_coff_swap_sym_out (output_bfd, | |
baf9bed3 JB |
4409 | (void *) &flinfo->last_file, |
4410 | (void *) (flinfo->outsyms | |
4411 | + ((flinfo->last_file_index | |
116c20d2 NC |
4412 | - syment_base) |
4413 | * osymesz))); | |
4414 | } | |
4415 | else | |
4416 | { | |
4417 | /* We have already written out the last C_FILE | |
4418 | symbol. We need to write it out again. We | |
4419 | borrow *outsym temporarily. */ | |
4420 | file_ptr pos; | |
252b5132 | 4421 | |
116c20d2 | 4422 | bfd_coff_swap_sym_out (output_bfd, |
baf9bed3 | 4423 | (void *) &flinfo->last_file, |
116c20d2 | 4424 | (void *) outsym); |
beb1bf64 | 4425 | |
116c20d2 | 4426 | pos = obj_sym_filepos (output_bfd); |
baf9bed3 | 4427 | pos += flinfo->last_file_index * osymesz; |
116c20d2 NC |
4428 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
4429 | || (bfd_bwrite (outsym, osymesz, output_bfd) | |
4430 | != osymesz)) | |
4431 | return FALSE; | |
4432 | } | |
4433 | } | |
252b5132 | 4434 | |
baf9bed3 JB |
4435 | flinfo->last_file_index = *indexp; |
4436 | flinfo->last_file = isym; | |
116c20d2 | 4437 | } |
252b5132 | 4438 | |
116c20d2 NC |
4439 | /* The value of a C_BINCL or C_EINCL symbol is a file offset |
4440 | into the line numbers. We update the symbol values when | |
4441 | we handle the line numbers. */ | |
4442 | if (isym.n_sclass == C_BINCL | |
4443 | || isym.n_sclass == C_EINCL) | |
4444 | { | |
baf9bed3 | 4445 | isym.n_value = flinfo->line_filepos; |
116c20d2 NC |
4446 | ++incls; |
4447 | } | |
e450936a RS |
4448 | /* The value of a C_BSTAT symbol is the symbol table |
4449 | index of the containing csect. */ | |
4450 | else if (isym.n_sclass == C_BSTAT) | |
116c20d2 | 4451 | { |
116c20d2 | 4452 | bfd_vma indx; |
252b5132 | 4453 | |
116c20d2 NC |
4454 | indx = isym.n_value; |
4455 | if (indx < obj_raw_syment_count (input_bfd)) | |
4456 | { | |
4457 | long symindx; | |
252b5132 | 4458 | |
baf9bed3 | 4459 | symindx = flinfo->sym_indices[indx]; |
116c20d2 NC |
4460 | if (symindx < 0) |
4461 | isym.n_value = 0; | |
4462 | else | |
4463 | isym.n_value = symindx; | |
116c20d2 NC |
4464 | } |
4465 | } | |
e450936a RS |
4466 | else if (isym.n_sclass != C_ESTAT |
4467 | && isym.n_sclass != C_DECL | |
4468 | && isym.n_scnum > 0) | |
4469 | { | |
4470 | isym.n_scnum = (*csectpp)->output_section->target_index; | |
4471 | isym.n_value += ((*csectpp)->output_section->vma | |
4472 | + (*csectpp)->output_offset | |
4473 | - (*csectpp)->vma); | |
4474 | } | |
4475 | ||
4476 | /* Output the symbol. */ | |
4477 | bfd_coff_swap_sym_out (output_bfd, (void *) &isym, (void *) outsym); | |
dc810e39 | 4478 | |
116c20d2 NC |
4479 | esym += isymesz; |
4480 | outsym += osymesz; | |
dc810e39 | 4481 | |
116c20d2 NC |
4482 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) |
4483 | { | |
4484 | union internal_auxent aux; | |
dc810e39 | 4485 | |
116c20d2 NC |
4486 | bfd_coff_swap_aux_in (input_bfd, (void *) esym, isymp->n_type, |
4487 | isymp->n_sclass, i, isymp->n_numaux, | |
4488 | (void *) &aux); | |
252b5132 | 4489 | |
116c20d2 NC |
4490 | if (isymp->n_sclass == C_FILE) |
4491 | { | |
4492 | /* This is the file name (or some comment put in by | |
4493 | the compiler). If it is long, we must put it in | |
4494 | the string table. */ | |
4495 | if (aux.x_file.x_n.x_zeroes == 0 | |
4496 | && aux.x_file.x_n.x_offset != 0) | |
4497 | { | |
4498 | const char *filename; | |
4499 | bfd_size_type indx; | |
dc810e39 | 4500 | |
116c20d2 NC |
4501 | BFD_ASSERT (aux.x_file.x_n.x_offset |
4502 | >= STRING_SIZE_SIZE); | |
4503 | if (strings == NULL) | |
4504 | { | |
4505 | strings = _bfd_coff_read_string_table (input_bfd); | |
4506 | if (strings == NULL) | |
4507 | return FALSE; | |
4508 | } | |
5a3f568b NC |
4509 | if ((bfd_size_type) aux.x_file.x_n.x_offset >= obj_coff_strings_len (input_bfd)) |
4510 | filename = _("<corrupt>"); | |
4511 | else | |
4512 | filename = strings + aux.x_file.x_n.x_offset; | |
baf9bed3 | 4513 | indx = _bfd_stringtab_add (flinfo->strtab, filename, |
116c20d2 NC |
4514 | hash, copy); |
4515 | if (indx == (bfd_size_type) -1) | |
4516 | return FALSE; | |
4517 | aux.x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; | |
4518 | } | |
4519 | } | |
8602d4fe | 4520 | else if (CSECT_SYM_P (isymp->n_sclass) |
116c20d2 NC |
4521 | && i + 1 == isymp->n_numaux) |
4522 | { | |
dc810e39 | 4523 | |
116c20d2 NC |
4524 | /* We don't support type checking. I don't know if |
4525 | anybody does. */ | |
4526 | aux.x_csect.x_parmhash = 0; | |
4527 | /* I don't think anybody uses these fields, but we'd | |
4528 | better clobber them just in case. */ | |
4529 | aux.x_csect.x_stab = 0; | |
4530 | aux.x_csect.x_snstab = 0; | |
dc810e39 | 4531 | |
116c20d2 NC |
4532 | if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_LD) |
4533 | { | |
4534 | unsigned long indx; | |
252b5132 | 4535 | |
116c20d2 NC |
4536 | indx = aux.x_csect.x_scnlen.l; |
4537 | if (indx < obj_raw_syment_count (input_bfd)) | |
4538 | { | |
4539 | long symindx; | |
252b5132 | 4540 | |
baf9bed3 | 4541 | symindx = flinfo->sym_indices[indx]; |
116c20d2 NC |
4542 | if (symindx < 0) |
4543 | { | |
4544 | aux.x_csect.x_scnlen.l = 0; | |
4545 | } | |
4546 | else | |
4547 | { | |
4548 | aux.x_csect.x_scnlen.l = symindx; | |
4549 | } | |
4550 | } | |
4551 | } | |
4552 | } | |
4553 | else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) | |
4554 | { | |
4555 | unsigned long indx; | |
252b5132 | 4556 | |
116c20d2 NC |
4557 | if (ISFCN (isymp->n_type) |
4558 | || ISTAG (isymp->n_sclass) | |
4559 | || isymp->n_sclass == C_BLOCK | |
4560 | || isymp->n_sclass == C_FCN) | |
4561 | { | |
4562 | indx = aux.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
4563 | if (indx > 0 | |
4564 | && indx < obj_raw_syment_count (input_bfd)) | |
4565 | { | |
4566 | /* We look forward through the symbol for | |
4567 | the index of the next symbol we are going | |
4568 | to include. I don't know if this is | |
4569 | entirely right. */ | |
baf9bed3 | 4570 | while (flinfo->sym_indices[indx] < 0 |
116c20d2 NC |
4571 | && indx < obj_raw_syment_count (input_bfd)) |
4572 | ++indx; | |
4573 | if (indx >= obj_raw_syment_count (input_bfd)) | |
4574 | indx = output_index; | |
4575 | else | |
baf9bed3 | 4576 | indx = flinfo->sym_indices[indx]; |
116c20d2 | 4577 | aux.x_sym.x_fcnary.x_fcn.x_endndx.l = indx; |
252b5132 | 4578 | |
116c20d2 NC |
4579 | } |
4580 | } | |
252b5132 | 4581 | |
116c20d2 NC |
4582 | indx = aux.x_sym.x_tagndx.l; |
4583 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) | |
4584 | { | |
4585 | long symindx; | |
252b5132 | 4586 | |
baf9bed3 | 4587 | symindx = flinfo->sym_indices[indx]; |
116c20d2 NC |
4588 | if (symindx < 0) |
4589 | aux.x_sym.x_tagndx.l = 0; | |
4590 | else | |
4591 | aux.x_sym.x_tagndx.l = symindx; | |
4592 | } | |
252b5132 | 4593 | |
116c20d2 | 4594 | } |
252b5132 | 4595 | |
116c20d2 NC |
4596 | /* Copy over the line numbers, unless we are stripping |
4597 | them. We do this on a symbol by symbol basis in | |
4598 | order to more easily handle garbage collection. */ | |
8602d4fe | 4599 | if (CSECT_SYM_P (isymp->n_sclass) |
116c20d2 NC |
4600 | && i == 0 |
4601 | && isymp->n_numaux > 1 | |
4602 | && ISFCN (isymp->n_type) | |
4603 | && aux.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0) | |
4604 | { | |
3df13c4a | 4605 | if (*lineno_counts == 0) |
116c20d2 NC |
4606 | aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0; |
4607 | else | |
4608 | { | |
4609 | asection *enclosing; | |
4610 | unsigned int enc_count; | |
4611 | bfd_signed_vma linoff; | |
4612 | struct internal_lineno lin; | |
3df13c4a RS |
4613 | bfd_byte *linp; |
4614 | bfd_byte *linpend; | |
4615 | bfd_vma offset; | |
4616 | file_ptr pos; | |
4617 | bfd_size_type amt; | |
252b5132 | 4618 | |
3df13c4a RS |
4619 | /* Read in the enclosing section's line-number |
4620 | information, if we haven't already. */ | |
116c20d2 NC |
4621 | o = *csectpp; |
4622 | enclosing = xcoff_section_data (abfd, o)->enclosing; | |
4623 | enc_count = xcoff_section_data (abfd, o)->lineno_count; | |
4624 | if (oline != enclosing) | |
4625 | { | |
3df13c4a RS |
4626 | pos = enclosing->line_filepos; |
4627 | amt = linesz * enc_count; | |
116c20d2 | 4628 | if (bfd_seek (input_bfd, pos, SEEK_SET) != 0 |
baf9bed3 | 4629 | || (bfd_bread (flinfo->linenos, amt, input_bfd) |
116c20d2 NC |
4630 | != amt)) |
4631 | return FALSE; | |
4632 | oline = enclosing; | |
4633 | } | |
beb1bf64 | 4634 | |
3df13c4a RS |
4635 | /* Copy across the first entry, adjusting its |
4636 | symbol index. */ | |
116c20d2 NC |
4637 | linoff = (aux.x_sym.x_fcnary.x_fcn.x_lnnoptr |
4638 | - enclosing->line_filepos); | |
baf9bed3 | 4639 | linp = flinfo->linenos + linoff; |
3df13c4a RS |
4640 | bfd_coff_swap_lineno_in (input_bfd, linp, &lin); |
4641 | lin.l_addr.l_symndx = *indexp; | |
4642 | bfd_coff_swap_lineno_out (output_bfd, &lin, linp); | |
3df13c4a RS |
4643 | |
4644 | /* Copy the other entries, adjusting their addresses. */ | |
4645 | linpend = linp + *lineno_counts * linesz; | |
4646 | offset = (o->output_section->vma | |
4647 | + o->output_offset | |
4648 | - o->vma); | |
8707bb87 | 4649 | for (linp += linesz; linp < linpend; linp += linesz) |
116c20d2 | 4650 | { |
3df13c4a RS |
4651 | bfd_coff_swap_lineno_in (input_bfd, linp, &lin); |
4652 | lin.l_addr.l_paddr += offset; | |
4653 | bfd_coff_swap_lineno_out (output_bfd, &lin, linp); | |
4654 | } | |
252b5132 | 4655 | |
3df13c4a RS |
4656 | /* Write out the entries we've just processed. */ |
4657 | pos = (o->output_section->line_filepos | |
116c20d2 | 4658 | + o->output_section->lineno_count * linesz); |
3df13c4a RS |
4659 | amt = linesz * *lineno_counts; |
4660 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
baf9bed3 | 4661 | || bfd_bwrite (flinfo->linenos + linoff, |
3df13c4a RS |
4662 | amt, output_bfd) != amt) |
4663 | return FALSE; | |
4664 | o->output_section->lineno_count += *lineno_counts; | |
252b5132 | 4665 | |
3df13c4a RS |
4666 | /* Record the offset of the symbol's line numbers |
4667 | in the output file. */ | |
4668 | aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = pos; | |
252b5132 | 4669 | |
3df13c4a RS |
4670 | if (incls > 0) |
4671 | { | |
4672 | struct internal_syment *iisp, *iispend; | |
4673 | long *iindp; | |
4674 | bfd_byte *oos; | |
4675 | bfd_vma range_start, range_end; | |
4676 | int iiadd; | |
4677 | ||
4678 | /* Update any C_BINCL or C_EINCL symbols | |
4679 | that refer to a line number in the | |
4680 | range we just output. */ | |
baf9bed3 | 4681 | iisp = flinfo->internal_syms; |
3df13c4a | 4682 | iispend = iisp + obj_raw_syment_count (input_bfd); |
baf9bed3 JB |
4683 | iindp = flinfo->sym_indices; |
4684 | oos = flinfo->outsyms; | |
3df13c4a RS |
4685 | range_start = enclosing->line_filepos + linoff; |
4686 | range_end = range_start + *lineno_counts * linesz; | |
4687 | while (iisp < iispend) | |
116c20d2 | 4688 | { |
3df13c4a RS |
4689 | if (*iindp >= 0 |
4690 | && (iisp->n_sclass == C_BINCL | |
4691 | || iisp->n_sclass == C_EINCL) | |
4692 | && iisp->n_value >= range_start | |
4693 | && iisp->n_value < range_end) | |
116c20d2 | 4694 | { |
3df13c4a RS |
4695 | struct internal_syment iis; |
4696 | ||
4697 | bfd_coff_swap_sym_in (output_bfd, oos, &iis); | |
4698 | iis.n_value = (iisp->n_value | |
4699 | - range_start | |
4700 | + pos); | |
4701 | bfd_coff_swap_sym_out (output_bfd, | |
4702 | &iis, oos); | |
4703 | --incls; | |
116c20d2 | 4704 | } |
3df13c4a RS |
4705 | |
4706 | iiadd = 1 + iisp->n_numaux; | |
4707 | if (*iindp >= 0) | |
4708 | oos += iiadd * osymesz; | |
4709 | iisp += iiadd; | |
4710 | iindp += iiadd; | |
116c20d2 NC |
4711 | } |
4712 | } | |
252b5132 RH |
4713 | } |
4714 | } | |
252b5132 | 4715 | |
116c20d2 NC |
4716 | bfd_coff_swap_aux_out (output_bfd, (void *) &aux, isymp->n_type, |
4717 | isymp->n_sclass, i, isymp->n_numaux, | |
4718 | (void *) outsym); | |
4719 | outsym += osymesz; | |
4720 | esym += isymesz; | |
dc810e39 | 4721 | } |
252b5132 RH |
4722 | } |
4723 | ||
54e2dbe0 | 4724 | sym_hash += add; |
116c20d2 NC |
4725 | indexp += add; |
4726 | isymp += add; | |
4727 | csectpp += add; | |
3df13c4a | 4728 | lineno_counts += add; |
e450936a | 4729 | debug_index += add; |
116c20d2 | 4730 | } |
252b5132 | 4731 | |
116c20d2 NC |
4732 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE |
4733 | symbol will be the first symbol in the next input file. In the | |
4734 | normal case, this will save us from writing out the C_FILE symbol | |
4735 | again. */ | |
baf9bed3 JB |
4736 | if (flinfo->last_file_index != -1 |
4737 | && (bfd_size_type) flinfo->last_file_index >= syment_base) | |
116c20d2 | 4738 | { |
baf9bed3 JB |
4739 | flinfo->last_file.n_value = output_index; |
4740 | bfd_coff_swap_sym_out (output_bfd, (void *) &flinfo->last_file, | |
4741 | (void *) (flinfo->outsyms | |
07d6d2b8 AM |
4742 | + ((flinfo->last_file_index - syment_base) |
4743 | * osymesz))); | |
116c20d2 | 4744 | } |
492055e6 | 4745 | |
116c20d2 | 4746 | /* Write the modified symbols to the output file. */ |
baf9bed3 | 4747 | if (outsym > flinfo->outsyms) |
116c20d2 NC |
4748 | { |
4749 | file_ptr pos = obj_sym_filepos (output_bfd) + syment_base * osymesz; | |
baf9bed3 | 4750 | bfd_size_type amt = outsym - flinfo->outsyms; |
116c20d2 | 4751 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
baf9bed3 | 4752 | || bfd_bwrite (flinfo->outsyms, amt, output_bfd) != amt) |
116c20d2 | 4753 | return FALSE; |
fbc4fff4 | 4754 | |
116c20d2 | 4755 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) |
baf9bed3 | 4756 | + (outsym - flinfo->outsyms) / osymesz) |
116c20d2 | 4757 | == output_index); |
fbc4fff4 | 4758 | |
116c20d2 NC |
4759 | obj_raw_syment_count (output_bfd) = output_index; |
4760 | } | |
fbc4fff4 | 4761 | |
116c20d2 NC |
4762 | /* Don't let the linker relocation routines discard the symbols. */ |
4763 | keep_syms = obj_coff_keep_syms (input_bfd); | |
4764 | obj_coff_keep_syms (input_bfd) = TRUE; | |
252b5132 | 4765 | |
116c20d2 NC |
4766 | /* Relocate the contents of each section. */ |
4767 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
4768 | { | |
4769 | bfd_byte *contents; | |
252b5132 | 4770 | |
116c20d2 NC |
4771 | if (! o->linker_mark) |
4772 | /* This section was omitted from the link. */ | |
4773 | continue; | |
252b5132 | 4774 | |
116c20d2 NC |
4775 | if ((o->flags & SEC_HAS_CONTENTS) == 0 |
4776 | || o->size == 0 | |
4777 | || (o->flags & SEC_IN_MEMORY) != 0) | |
4778 | continue; | |
dc810e39 | 4779 | |
116c20d2 NC |
4780 | /* We have set filepos correctly for the sections we created to |
4781 | represent csects, so bfd_get_section_contents should work. */ | |
4782 | if (coff_section_data (input_bfd, o) != NULL | |
4783 | && coff_section_data (input_bfd, o)->contents != NULL) | |
4784 | contents = coff_section_data (input_bfd, o)->contents; | |
4785 | else | |
4786 | { | |
4787 | bfd_size_type sz = o->rawsize ? o->rawsize : o->size; | |
baf9bed3 | 4788 | if (!bfd_get_section_contents (input_bfd, o, flinfo->contents, 0, sz)) |
72913831 | 4789 | goto err_out; |
baf9bed3 | 4790 | contents = flinfo->contents; |
252b5132 RH |
4791 | } |
4792 | ||
116c20d2 | 4793 | if ((o->flags & SEC_RELOC) != 0) |
252b5132 | 4794 | { |
116c20d2 NC |
4795 | int target_index; |
4796 | struct internal_reloc *internal_relocs; | |
4797 | struct internal_reloc *irel; | |
4798 | bfd_vma offset; | |
4799 | struct internal_reloc *irelend; | |
4800 | struct xcoff_link_hash_entry **rel_hash; | |
4801 | long r_symndx; | |
252b5132 | 4802 | |
116c20d2 NC |
4803 | /* Read in the relocs. */ |
4804 | target_index = o->output_section->target_index; | |
4805 | internal_relocs = (xcoff_read_internal_relocs | |
baf9bed3 | 4806 | (input_bfd, o, FALSE, flinfo->external_relocs, |
116c20d2 | 4807 | TRUE, |
baf9bed3 | 4808 | (flinfo->section_info[target_index].relocs |
116c20d2 NC |
4809 | + o->output_section->reloc_count))); |
4810 | if (internal_relocs == NULL) | |
72913831 | 4811 | goto err_out; |
beb1bf64 | 4812 | |
116c20d2 NC |
4813 | /* Call processor specific code to relocate the section |
4814 | contents. */ | |
baf9bed3 | 4815 | if (! bfd_coff_relocate_section (output_bfd, flinfo->info, |
116c20d2 NC |
4816 | input_bfd, o, |
4817 | contents, | |
4818 | internal_relocs, | |
baf9bed3 | 4819 | flinfo->internal_syms, |
116c20d2 | 4820 | xcoff_data (input_bfd)->csects)) |
72913831 | 4821 | goto err_out; |
252b5132 | 4822 | |
116c20d2 NC |
4823 | offset = o->output_section->vma + o->output_offset - o->vma; |
4824 | irel = internal_relocs; | |
4825 | irelend = irel + o->reloc_count; | |
baf9bed3 | 4826 | rel_hash = (flinfo->section_info[target_index].rel_hashes |
116c20d2 NC |
4827 | + o->output_section->reloc_count); |
4828 | for (; irel < irelend; irel++, rel_hash++) | |
4829 | { | |
4830 | struct xcoff_link_hash_entry *h = NULL; | |
252b5132 | 4831 | |
116c20d2 | 4832 | *rel_hash = NULL; |
252b5132 | 4833 | |
116c20d2 | 4834 | /* Adjust the reloc address and symbol index. */ |
252b5132 | 4835 | |
116c20d2 | 4836 | irel->r_vaddr += offset; |
252b5132 | 4837 | |
116c20d2 | 4838 | r_symndx = irel->r_symndx; |
beb1bf64 | 4839 | |
116c20d2 NC |
4840 | if (r_symndx == -1) |
4841 | h = NULL; | |
4842 | else | |
4843 | h = obj_xcoff_sym_hashes (input_bfd)[r_symndx]; | |
252b5132 | 4844 | |
baf9bed3 | 4845 | if (r_symndx != -1 && flinfo->info->strip != strip_all) |
252b5132 | 4846 | { |
116c20d2 NC |
4847 | if (h != NULL |
4848 | && h->smclas != XMC_TD | |
4849 | && (irel->r_type == R_TOC | |
4850 | || irel->r_type == R_GL | |
4851 | || irel->r_type == R_TCL | |
4852 | || irel->r_type == R_TRL | |
4853 | || irel->r_type == R_TRLA)) | |
252b5132 | 4854 | { |
116c20d2 NC |
4855 | /* This is a TOC relative reloc with a symbol |
4856 | attached. The symbol should be the one which | |
4857 | this reloc is for. We want to make this | |
4858 | reloc against the TOC address of the symbol, | |
4859 | not the symbol itself. */ | |
4860 | BFD_ASSERT (h->toc_section != NULL); | |
4861 | BFD_ASSERT ((h->flags & XCOFF_SET_TOC) == 0); | |
4862 | if (h->u.toc_indx != -1) | |
4863 | irel->r_symndx = h->u.toc_indx; | |
4864 | else | |
4865 | { | |
4866 | struct xcoff_toc_rel_hash *n; | |
4867 | struct xcoff_link_section_info *si; | |
986f0783 | 4868 | size_t amt; |
116c20d2 NC |
4869 | |
4870 | amt = sizeof (* n); | |
baf9bed3 | 4871 | n = bfd_alloc (flinfo->output_bfd, amt); |
116c20d2 | 4872 | if (n == NULL) |
72913831 | 4873 | goto err_out; |
baf9bed3 | 4874 | si = flinfo->section_info + target_index; |
116c20d2 NC |
4875 | n->next = si->toc_rel_hashes; |
4876 | n->h = h; | |
4877 | n->rel = irel; | |
4878 | si->toc_rel_hashes = n; | |
4879 | } | |
252b5132 | 4880 | } |
116c20d2 | 4881 | else if (h != NULL) |
252b5132 | 4882 | { |
116c20d2 NC |
4883 | /* This is a global symbol. */ |
4884 | if (h->indx >= 0) | |
4885 | irel->r_symndx = h->indx; | |
4886 | else | |
4887 | { | |
4888 | /* This symbol is being written at the end | |
4889 | of the file, and we do not yet know the | |
4890 | symbol index. We save the pointer to the | |
4891 | hash table entry in the rel_hash list. | |
4892 | We set the indx field to -2 to indicate | |
4893 | that this symbol must not be stripped. */ | |
4894 | *rel_hash = h; | |
4895 | h->indx = -2; | |
4896 | } | |
252b5132 | 4897 | } |
116c20d2 NC |
4898 | else |
4899 | { | |
4900 | long indx; | |
252b5132 | 4901 | |
baf9bed3 | 4902 | indx = flinfo->sym_indices[r_symndx]; |
252b5132 | 4903 | |
116c20d2 NC |
4904 | if (indx == -1) |
4905 | { | |
4906 | struct internal_syment *is; | |
252b5132 | 4907 | |
116c20d2 NC |
4908 | /* Relocations against a TC0 TOC anchor are |
4909 | automatically transformed to be against | |
4910 | the TOC anchor in the output file. */ | |
baf9bed3 | 4911 | is = flinfo->internal_syms + r_symndx; |
116c20d2 NC |
4912 | if (is->n_sclass == C_HIDEXT |
4913 | && is->n_numaux > 0) | |
4914 | { | |
4915 | void * auxptr; | |
4916 | union internal_auxent aux; | |
252b5132 | 4917 | |
116c20d2 NC |
4918 | auxptr = ((void *) |
4919 | (((bfd_byte *) | |
4920 | obj_coff_external_syms (input_bfd)) | |
4921 | + ((r_symndx + is->n_numaux) | |
4922 | * isymesz))); | |
4923 | bfd_coff_swap_aux_in (input_bfd, auxptr, | |
4924 | is->n_type, is->n_sclass, | |
4925 | is->n_numaux - 1, | |
4926 | is->n_numaux, | |
4927 | (void *) &aux); | |
4928 | if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_SD | |
4929 | && aux.x_csect.x_smclas == XMC_TC0) | |
baf9bed3 | 4930 | indx = flinfo->toc_symindx; |
116c20d2 NC |
4931 | } |
4932 | } | |
252b5132 | 4933 | |
116c20d2 NC |
4934 | if (indx != -1) |
4935 | irel->r_symndx = indx; | |
4936 | else | |
4937 | { | |
252b5132 | 4938 | |
116c20d2 | 4939 | struct internal_syment *is; |
252b5132 | 4940 | |
116c20d2 NC |
4941 | const char *name; |
4942 | char buf[SYMNMLEN + 1]; | |
252b5132 | 4943 | |
116c20d2 NC |
4944 | /* This reloc is against a symbol we are |
4945 | stripping. It would be possible to handle | |
4946 | this case, but I don't think it's worth it. */ | |
baf9bed3 | 4947 | is = flinfo->internal_syms + r_symndx; |
beb1bf64 | 4948 | |
07d6d2b8 AM |
4949 | if (is->n_sclass != C_DWARF) |
4950 | { | |
4951 | name = (_bfd_coff_internal_syment_name | |
4952 | (input_bfd, is, buf)); | |
252b5132 | 4953 | |
07d6d2b8 | 4954 | if (name == NULL) |
72913831 | 4955 | goto err_out; |
252b5132 | 4956 | |
1a72702b AM |
4957 | (*flinfo->info->callbacks->unattached_reloc) |
4958 | (flinfo->info, name, | |
4959 | input_bfd, o, irel->r_vaddr); | |
07d6d2b8 | 4960 | } |
116c20d2 NC |
4961 | } |
4962 | } | |
252b5132 | 4963 | } |
252b5132 | 4964 | |
5ccfed9b | 4965 | if ((o->flags & SEC_DEBUGGING) == 0 |
07d6d2b8 | 4966 | && xcoff_need_ldrel_p (flinfo->info, irel, h)) |
252b5132 | 4967 | { |
b3d1832c | 4968 | asection *sec; |
252b5132 | 4969 | |
b3d1832c RS |
4970 | if (r_symndx == -1) |
4971 | sec = NULL; | |
4972 | else if (h == NULL) | |
4973 | sec = xcoff_data (input_bfd)->csects[r_symndx]; | |
116c20d2 | 4974 | else |
b3d1832c | 4975 | sec = xcoff_symbol_section (h); |
baf9bed3 | 4976 | if (!xcoff_create_ldrel (output_bfd, flinfo, |
b3d1832c RS |
4977 | o->output_section, input_bfd, |
4978 | irel, sec, h)) | |
72913831 | 4979 | goto err_out; |
116c20d2 NC |
4980 | } |
4981 | } | |
252b5132 | 4982 | |
116c20d2 NC |
4983 | o->output_section->reloc_count += o->reloc_count; |
4984 | } | |
252b5132 | 4985 | |
116c20d2 NC |
4986 | /* Write out the modified section contents. */ |
4987 | if (! bfd_set_section_contents (output_bfd, o->output_section, | |
4988 | contents, (file_ptr) o->output_offset, | |
4989 | o->size)) | |
72913831 | 4990 | goto err_out; |
116c20d2 | 4991 | } |
252b5132 | 4992 | |
116c20d2 | 4993 | obj_coff_keep_syms (input_bfd) = keep_syms; |
252b5132 | 4994 | |
baf9bed3 | 4995 | if (! flinfo->info->keep_memory) |
116c20d2 NC |
4996 | { |
4997 | if (! _bfd_coff_free_symbols (input_bfd)) | |
4998 | return FALSE; | |
4999 | } | |
252b5132 | 5000 | |
116c20d2 | 5001 | return TRUE; |
72913831 AM |
5002 | |
5003 | err_out: | |
5004 | obj_coff_keep_syms (input_bfd) = keep_syms; | |
5005 | return FALSE; | |
116c20d2 | 5006 | } |
252b5132 | 5007 | |
116c20d2 NC |
5008 | #undef N_TMASK |
5009 | #undef N_BTSHFT | |
252b5132 | 5010 | |
116c20d2 | 5011 | /* Sort relocs by VMA. This is called via qsort. */ |
252b5132 | 5012 | |
116c20d2 NC |
5013 | static int |
5014 | xcoff_sort_relocs (const void * p1, const void * p2) | |
5015 | { | |
5016 | const struct internal_reloc *r1 = (const struct internal_reloc *) p1; | |
5017 | const struct internal_reloc *r2 = (const struct internal_reloc *) p2; | |
252b5132 | 5018 | |
116c20d2 NC |
5019 | if (r1->r_vaddr > r2->r_vaddr) |
5020 | return 1; | |
5021 | else if (r1->r_vaddr < r2->r_vaddr) | |
5022 | return -1; | |
5023 | else | |
5024 | return 0; | |
5025 | } | |
252b5132 | 5026 | |
47dfb2ca RS |
5027 | /* Return true if section SEC is a TOC section. */ |
5028 | ||
5029 | static inline bfd_boolean | |
5030 | xcoff_toc_section_p (asection *sec) | |
5031 | { | |
5032 | const char *name; | |
5033 | ||
5034 | name = sec->name; | |
5035 | if (name[0] == '.' && name[1] == 't') | |
5036 | { | |
5037 | if (name[2] == 'c') | |
5038 | { | |
5039 | if (name[3] == '0' && name[4] == 0) | |
5040 | return TRUE; | |
5041 | if (name[3] == 0) | |
5042 | return TRUE; | |
5043 | } | |
5044 | if (name[2] == 'd' && name[3] == 0) | |
5045 | return TRUE; | |
5046 | } | |
5047 | return FALSE; | |
5048 | } | |
5049 | ||
5050 | /* See if the link requires a TOC (it usually does!). If so, find a | |
5051 | good place to put the TOC anchor csect, and write out the associated | |
5052 | symbol. */ | |
5053 | ||
5054 | static bfd_boolean | |
baf9bed3 | 5055 | xcoff_find_tc0 (bfd *output_bfd, struct xcoff_final_link_info *flinfo) |
47dfb2ca RS |
5056 | { |
5057 | bfd_vma toc_start, toc_end, start, end, best_address; | |
5058 | asection *sec; | |
5059 | bfd *input_bfd; | |
5060 | int section_index; | |
5061 | struct internal_syment irsym; | |
5062 | union internal_auxent iraux; | |
5063 | file_ptr pos; | |
5064 | size_t size; | |
5065 | ||
5066 | /* Set [TOC_START, TOC_END) to the range of the TOC. Record the | |
5067 | index of a csect at the beginning of the TOC. */ | |
5068 | toc_start = ~(bfd_vma) 0; | |
5069 | toc_end = 0; | |
5070 | section_index = -1; | |
baf9bed3 | 5071 | for (input_bfd = flinfo->info->input_bfds; |
47dfb2ca | 5072 | input_bfd != NULL; |
c72f2fb2 | 5073 | input_bfd = input_bfd->link.next) |
47dfb2ca RS |
5074 | for (sec = input_bfd->sections; sec != NULL; sec = sec->next) |
5075 | if ((sec->flags & SEC_MARK) != 0 && xcoff_toc_section_p (sec)) | |
5076 | { | |
5077 | start = sec->output_section->vma + sec->output_offset; | |
5078 | if (toc_start > start) | |
5079 | { | |
5080 | toc_start = start; | |
5081 | section_index = sec->output_section->target_index; | |
5082 | } | |
5083 | ||
5084 | end = start + sec->size; | |
5085 | if (toc_end < end) | |
5086 | toc_end = end; | |
5087 | } | |
5088 | ||
5089 | /* There's no need for a TC0 symbol if we don't have a TOC. */ | |
5090 | if (toc_end < toc_start) | |
5091 | { | |
5092 | xcoff_data (output_bfd)->toc = toc_start; | |
5093 | return TRUE; | |
5094 | } | |
5095 | ||
5096 | if (toc_end - toc_start < 0x8000) | |
5097 | /* Every TOC csect can be accessed from TOC_START. */ | |
5098 | best_address = toc_start; | |
5099 | else | |
5100 | { | |
5101 | /* Find the lowest TOC csect that is still within range of TOC_END. */ | |
5102 | best_address = toc_end; | |
baf9bed3 | 5103 | for (input_bfd = flinfo->info->input_bfds; |
47dfb2ca | 5104 | input_bfd != NULL; |
c72f2fb2 | 5105 | input_bfd = input_bfd->link.next) |
47dfb2ca RS |
5106 | for (sec = input_bfd->sections; sec != NULL; sec = sec->next) |
5107 | if ((sec->flags & SEC_MARK) != 0 && xcoff_toc_section_p (sec)) | |
5108 | { | |
5109 | start = sec->output_section->vma + sec->output_offset; | |
5110 | if (start < best_address | |
5111 | && start + 0x8000 >= toc_end) | |
5112 | { | |
5113 | best_address = start; | |
5114 | section_index = sec->output_section->target_index; | |
5115 | } | |
5116 | } | |
5117 | ||
5118 | /* Make sure that the start of the TOC is also within range. */ | |
5119 | if (best_address > toc_start + 0x8000) | |
5120 | { | |
4eca0228 | 5121 | _bfd_error_handler |
2dcf00ce | 5122 | (_("TOC overflow: %#" PRIx64 " > 0x10000; try -mminimal-toc " |
47dfb2ca | 5123 | "when compiling"), |
2dcf00ce | 5124 | (uint64_t) (toc_end - toc_start)); |
47dfb2ca RS |
5125 | bfd_set_error (bfd_error_file_too_big); |
5126 | return FALSE; | |
5127 | } | |
5128 | } | |
5129 | ||
5130 | /* Record the chosen TOC value. */ | |
baf9bed3 | 5131 | flinfo->toc_symindx = obj_raw_syment_count (output_bfd); |
47dfb2ca RS |
5132 | xcoff_data (output_bfd)->toc = best_address; |
5133 | xcoff_data (output_bfd)->sntoc = section_index; | |
5134 | ||
5135 | /* Fill out the TC0 symbol. */ | |
b560e2ac AM |
5136 | if (!bfd_xcoff_put_symbol_name (output_bfd, flinfo->info, flinfo->strtab, |
5137 | &irsym, "TOC")) | |
47dfb2ca RS |
5138 | return FALSE; |
5139 | irsym.n_value = best_address; | |
5140 | irsym.n_scnum = section_index; | |
5141 | irsym.n_sclass = C_HIDEXT; | |
5142 | irsym.n_type = T_NULL; | |
5143 | irsym.n_numaux = 1; | |
baf9bed3 | 5144 | bfd_coff_swap_sym_out (output_bfd, &irsym, flinfo->outsyms); |
47dfb2ca RS |
5145 | |
5146 | /* Fill out the auxillary csect information. */ | |
5147 | memset (&iraux, 0, sizeof iraux); | |
5148 | iraux.x_csect.x_smtyp = XTY_SD; | |
5149 | iraux.x_csect.x_smclas = XMC_TC0; | |
5150 | iraux.x_csect.x_scnlen.l = 0; | |
5151 | bfd_coff_swap_aux_out (output_bfd, &iraux, T_NULL, C_HIDEXT, 0, 1, | |
baf9bed3 | 5152 | flinfo->outsyms + bfd_coff_symesz (output_bfd)); |
47dfb2ca RS |
5153 | |
5154 | /* Write the contents to the file. */ | |
5155 | pos = obj_sym_filepos (output_bfd); | |
5156 | pos += obj_raw_syment_count (output_bfd) * bfd_coff_symesz (output_bfd); | |
5157 | size = 2 * bfd_coff_symesz (output_bfd); | |
5158 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
baf9bed3 | 5159 | || bfd_bwrite (flinfo->outsyms, size, output_bfd) != size) |
47dfb2ca RS |
5160 | return FALSE; |
5161 | obj_raw_syment_count (output_bfd) += 2; | |
5162 | ||
5163 | return TRUE; | |
5164 | } | |
5165 | ||
116c20d2 | 5166 | /* Write out a non-XCOFF global symbol. */ |
252b5132 | 5167 | |
116c20d2 | 5168 | static bfd_boolean |
7686d77d | 5169 | xcoff_write_global_symbol (struct bfd_hash_entry *bh, void * inf) |
116c20d2 | 5170 | { |
7686d77d | 5171 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) bh; |
baf9bed3 | 5172 | struct xcoff_final_link_info *flinfo = (struct xcoff_final_link_info *) inf; |
116c20d2 NC |
5173 | bfd *output_bfd; |
5174 | bfd_byte *outsym; | |
5175 | struct internal_syment isym; | |
5176 | union internal_auxent aux; | |
5177 | bfd_boolean result; | |
5178 | file_ptr pos; | |
5179 | bfd_size_type amt; | |
252b5132 | 5180 | |
baf9bed3 JB |
5181 | output_bfd = flinfo->output_bfd; |
5182 | outsym = flinfo->outsyms; | |
252b5132 | 5183 | |
116c20d2 | 5184 | if (h->root.type == bfd_link_hash_warning) |
252b5132 | 5185 | { |
116c20d2 NC |
5186 | h = (struct xcoff_link_hash_entry *) h->root.u.i.link; |
5187 | if (h->root.type == bfd_link_hash_new) | |
5188 | return TRUE; | |
252b5132 RH |
5189 | } |
5190 | ||
116c20d2 | 5191 | /* If this symbol was garbage collected, just skip it. */ |
baf9bed3 | 5192 | if (xcoff_hash_table (flinfo->info)->gc |
116c20d2 NC |
5193 | && (h->flags & XCOFF_MARK) == 0) |
5194 | return TRUE; | |
5195 | ||
5196 | /* If we need a .loader section entry, write it out. */ | |
5197 | if (h->ldsym != NULL) | |
252b5132 | 5198 | { |
116c20d2 NC |
5199 | struct internal_ldsym *ldsym; |
5200 | bfd *impbfd; | |
252b5132 | 5201 | |
116c20d2 | 5202 | ldsym = h->ldsym; |
252b5132 | 5203 | |
116c20d2 NC |
5204 | if (h->root.type == bfd_link_hash_undefined |
5205 | || h->root.type == bfd_link_hash_undefweak) | |
5206 | { | |
252b5132 | 5207 | |
116c20d2 NC |
5208 | ldsym->l_value = 0; |
5209 | ldsym->l_scnum = N_UNDEF; | |
5210 | ldsym->l_smtype = XTY_ER; | |
5211 | impbfd = h->root.u.undef.abfd; | |
252b5132 | 5212 | |
116c20d2 NC |
5213 | } |
5214 | else if (h->root.type == bfd_link_hash_defined | |
5215 | || h->root.type == bfd_link_hash_defweak) | |
5216 | { | |
5217 | asection *sec; | |
252b5132 | 5218 | |
116c20d2 NC |
5219 | sec = h->root.u.def.section; |
5220 | ldsym->l_value = (sec->output_section->vma | |
5221 | + sec->output_offset | |
5222 | + h->root.u.def.value); | |
5223 | ldsym->l_scnum = sec->output_section->target_index; | |
5224 | ldsym->l_smtype = XTY_SD; | |
5225 | impbfd = sec->owner; | |
252b5132 | 5226 | |
dc810e39 | 5227 | } |
116c20d2 NC |
5228 | else |
5229 | abort (); | |
252b5132 | 5230 | |
116c20d2 NC |
5231 | if (((h->flags & XCOFF_DEF_REGULAR) == 0 |
5232 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) | |
5233 | || (h->flags & XCOFF_IMPORT) != 0) | |
5234 | /* Clear l_smtype | |
5235 | Import symbols are defined so the check above will make | |
5236 | the l_smtype XTY_SD. But this is not correct, it should | |
5237 | be cleared. */ | |
5238 | ldsym->l_smtype |= L_IMPORT; | |
252b5132 | 5239 | |
116c20d2 NC |
5240 | if (((h->flags & XCOFF_DEF_REGULAR) != 0 |
5241 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) | |
5242 | || (h->flags & XCOFF_EXPORT) != 0) | |
5243 | ldsym->l_smtype |= L_EXPORT; | |
252b5132 | 5244 | |
116c20d2 NC |
5245 | if ((h->flags & XCOFF_ENTRY) != 0) |
5246 | ldsym->l_smtype |= L_ENTRY; | |
5247 | ||
5248 | if ((h->flags & XCOFF_RTINIT) != 0) | |
5249 | ldsym->l_smtype = XTY_SD; | |
5250 | ||
5251 | ldsym->l_smclas = h->smclas; | |
5252 | ||
5253 | if (ldsym->l_smtype & L_IMPORT) | |
dc810e39 | 5254 | { |
116c20d2 NC |
5255 | if ((h->root.type == bfd_link_hash_defined |
5256 | || h->root.type == bfd_link_hash_defweak) | |
5257 | && (h->root.u.def.value != 0)) | |
5258 | ldsym->l_smclas = XMC_XO; | |
dc810e39 | 5259 | |
116c20d2 NC |
5260 | else if ((h->flags & (XCOFF_SYSCALL32 | XCOFF_SYSCALL64)) == |
5261 | (XCOFF_SYSCALL32 | XCOFF_SYSCALL64)) | |
5262 | ldsym->l_smclas = XMC_SV3264; | |
252b5132 | 5263 | |
116c20d2 NC |
5264 | else if (h->flags & XCOFF_SYSCALL32) |
5265 | ldsym->l_smclas = XMC_SV; | |
252b5132 | 5266 | |
116c20d2 NC |
5267 | else if (h->flags & XCOFF_SYSCALL64) |
5268 | ldsym->l_smclas = XMC_SV64; | |
5269 | } | |
5270 | ||
5271 | if (ldsym->l_ifile == -(bfd_size_type) 1) | |
5272 | { | |
5273 | ldsym->l_ifile = 0; | |
5274 | } | |
5275 | else if (ldsym->l_ifile == 0) | |
5276 | { | |
5277 | if ((ldsym->l_smtype & L_IMPORT) == 0) | |
5278 | ldsym->l_ifile = 0; | |
5279 | else if (impbfd == NULL) | |
5280 | ldsym->l_ifile = 0; | |
5281 | else | |
dc810e39 | 5282 | { |
116c20d2 NC |
5283 | BFD_ASSERT (impbfd->xvec == output_bfd->xvec); |
5284 | ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; | |
5285 | } | |
5286 | } | |
252b5132 | 5287 | |
116c20d2 | 5288 | ldsym->l_parm = 0; |
252b5132 | 5289 | |
116c20d2 | 5290 | BFD_ASSERT (h->ldindx >= 0); |
252b5132 | 5291 | |
116c20d2 | 5292 | bfd_xcoff_swap_ldsym_out (output_bfd, ldsym, |
baf9bed3 | 5293 | (flinfo->ldsym + |
116c20d2 | 5294 | (h->ldindx - 3) |
baf9bed3 | 5295 | * bfd_xcoff_ldsymsz(flinfo->output_bfd))); |
116c20d2 NC |
5296 | h->ldsym = NULL; |
5297 | } | |
252b5132 | 5298 | |
116c20d2 NC |
5299 | /* If this symbol needs global linkage code, write it out. */ |
5300 | if (h->root.type == bfd_link_hash_defined | |
5301 | && (h->root.u.def.section | |
baf9bed3 | 5302 | == xcoff_hash_table (flinfo->info)->linkage_section)) |
116c20d2 NC |
5303 | { |
5304 | bfd_byte *p; | |
5305 | bfd_vma tocoff; | |
5306 | unsigned int i; | |
252b5132 | 5307 | |
116c20d2 | 5308 | p = h->root.u.def.section->contents + h->root.u.def.value; |
252b5132 | 5309 | |
116c20d2 NC |
5310 | /* The first instruction in the global linkage code loads a |
5311 | specific TOC element. */ | |
5312 | tocoff = (h->descriptor->toc_section->output_section->vma | |
5313 | + h->descriptor->toc_section->output_offset | |
5314 | - xcoff_data (output_bfd)->toc); | |
dc810e39 | 5315 | |
116c20d2 NC |
5316 | if ((h->descriptor->flags & XCOFF_SET_TOC) != 0) |
5317 | tocoff += h->descriptor->u.toc_offset; | |
252b5132 | 5318 | |
116c20d2 | 5319 | /* The first instruction in the glink code needs to be |
de194d85 | 5320 | cooked to hold the correct offset in the toc. The |
116c20d2 NC |
5321 | rest are just output raw. */ |
5322 | bfd_put_32 (output_bfd, | |
5323 | bfd_xcoff_glink_code(output_bfd, 0) | (tocoff & 0xffff), p); | |
252b5132 | 5324 | |
116c20d2 NC |
5325 | /* Start with i == 1 to get past the first instruction done above |
5326 | The /4 is because the glink code is in bytes and we are going | |
5327 | 4 at a pop. */ | |
5328 | for (i = 1; i < bfd_xcoff_glink_code_size(output_bfd) / 4; i++) | |
5329 | bfd_put_32 (output_bfd, | |
5330 | (bfd_vma) bfd_xcoff_glink_code(output_bfd, i), | |
5331 | &p[4 * i]); | |
5332 | } | |
dc810e39 | 5333 | |
116c20d2 NC |
5334 | /* If we created a TOC entry for this symbol, write out the required |
5335 | relocs. */ | |
5336 | if ((h->flags & XCOFF_SET_TOC) != 0) | |
5337 | { | |
5338 | asection *tocsec; | |
5339 | asection *osec; | |
5340 | int oindx; | |
5341 | struct internal_reloc *irel; | |
116c20d2 NC |
5342 | struct internal_syment irsym; |
5343 | union internal_auxent iraux; | |
dc810e39 | 5344 | |
116c20d2 NC |
5345 | tocsec = h->toc_section; |
5346 | osec = tocsec->output_section; | |
5347 | oindx = osec->target_index; | |
baf9bed3 | 5348 | irel = flinfo->section_info[oindx].relocs + osec->reloc_count; |
116c20d2 NC |
5349 | irel->r_vaddr = (osec->vma |
5350 | + tocsec->output_offset | |
5351 | + h->u.toc_offset); | |
5352 | ||
5353 | if (h->indx >= 0) | |
5354 | irel->r_symndx = h->indx; | |
5355 | else | |
5356 | { | |
5357 | h->indx = -2; | |
5358 | irel->r_symndx = obj_raw_syment_count (output_bfd); | |
5359 | } | |
5360 | ||
5361 | BFD_ASSERT (h->ldindx >= 0); | |
5362 | ||
5363 | /* Initialize the aux union here instead of closer to when it is | |
5364 | written out below because the length of the csect depends on | |
5365 | whether the output is 32 or 64 bit. */ | |
5366 | memset (&iraux, 0, sizeof iraux); | |
5367 | iraux.x_csect.x_smtyp = XTY_SD; | |
5368 | /* iraux.x_csect.x_scnlen.l = 4 or 8, see below. */ | |
5369 | iraux.x_csect.x_smclas = XMC_TC; | |
5370 | ||
5371 | /* 32 bit uses a 32 bit R_POS to do the relocations | |
5372 | 64 bit uses a 64 bit R_POS to do the relocations | |
5373 | ||
5374 | Also needs to change the csect size : 4 for 32 bit, 8 for 64 bit | |
5375 | ||
5376 | Which one is determined by the backend. */ | |
5377 | if (bfd_xcoff_is_xcoff64 (output_bfd)) | |
5378 | { | |
5379 | irel->r_size = 63; | |
5380 | iraux.x_csect.x_scnlen.l = 8; | |
5381 | } | |
5382 | else if (bfd_xcoff_is_xcoff32 (output_bfd)) | |
5383 | { | |
5384 | irel->r_size = 31; | |
5385 | iraux.x_csect.x_scnlen.l = 4; | |
5386 | } | |
5387 | else | |
5388 | return FALSE; | |
5389 | ||
5390 | irel->r_type = R_POS; | |
baf9bed3 | 5391 | flinfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; |
116c20d2 NC |
5392 | ++osec->reloc_count; |
5393 | ||
baf9bed3 | 5394 | if (!xcoff_create_ldrel (output_bfd, flinfo, osec, |
b3d1832c RS |
5395 | output_bfd, irel, NULL, h)) |
5396 | return FALSE; | |
116c20d2 NC |
5397 | |
5398 | /* We need to emit a symbol to define a csect which holds | |
5399 | the reloc. */ | |
baf9bed3 | 5400 | if (flinfo->info->strip != strip_all) |
116c20d2 | 5401 | { |
b560e2ac AM |
5402 | result = bfd_xcoff_put_symbol_name (output_bfd, flinfo->info, |
5403 | flinfo->strtab, | |
116c20d2 NC |
5404 | &irsym, h->root.root.string); |
5405 | if (!result) | |
5406 | return FALSE; | |
5407 | ||
5408 | irsym.n_value = irel->r_vaddr; | |
5409 | irsym.n_scnum = osec->target_index; | |
5410 | irsym.n_sclass = C_HIDEXT; | |
5411 | irsym.n_type = T_NULL; | |
5412 | irsym.n_numaux = 1; | |
5413 | ||
5414 | bfd_coff_swap_sym_out (output_bfd, (void *) &irsym, (void *) outsym); | |
5415 | outsym += bfd_coff_symesz (output_bfd); | |
5416 | ||
5417 | /* Note : iraux is initialized above. */ | |
5418 | bfd_coff_swap_aux_out (output_bfd, (void *) &iraux, T_NULL, C_HIDEXT, | |
5419 | 0, 1, (void *) outsym); | |
5420 | outsym += bfd_coff_auxesz (output_bfd); | |
5421 | ||
5422 | if (h->indx >= 0) | |
5423 | { | |
5424 | /* We aren't going to write out the symbols below, so we | |
5425 | need to write them out now. */ | |
5426 | pos = obj_sym_filepos (output_bfd); | |
5427 | pos += (obj_raw_syment_count (output_bfd) | |
5428 | * bfd_coff_symesz (output_bfd)); | |
baf9bed3 | 5429 | amt = outsym - flinfo->outsyms; |
116c20d2 | 5430 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
baf9bed3 | 5431 | || bfd_bwrite (flinfo->outsyms, amt, output_bfd) != amt) |
116c20d2 NC |
5432 | return FALSE; |
5433 | obj_raw_syment_count (output_bfd) += | |
baf9bed3 | 5434 | (outsym - flinfo->outsyms) / bfd_coff_symesz (output_bfd); |
116c20d2 | 5435 | |
baf9bed3 | 5436 | outsym = flinfo->outsyms; |
116c20d2 NC |
5437 | } |
5438 | } | |
5439 | } | |
5440 | ||
5441 | /* If this symbol is a specially defined function descriptor, write | |
5442 | it out. The first word is the address of the function code | |
5443 | itself, the second word is the address of the TOC, and the third | |
5444 | word is zero. | |
5445 | ||
5446 | 32 bit vs 64 bit | |
5447 | The addresses for the 32 bit will take 4 bytes and the addresses | |
5448 | for 64 bit will take 8 bytes. Similar for the relocs. This type | |
5449 | of logic was also done above to create a TOC entry in | |
5450 | xcoff_write_global_symbol. */ | |
5451 | if ((h->flags & XCOFF_DESCRIPTOR) != 0 | |
5452 | && h->root.type == bfd_link_hash_defined | |
5453 | && (h->root.u.def.section | |
baf9bed3 | 5454 | == xcoff_hash_table (flinfo->info)->descriptor_section)) |
116c20d2 NC |
5455 | { |
5456 | asection *sec; | |
5457 | asection *osec; | |
5458 | int oindx; | |
5459 | bfd_byte *p; | |
5460 | struct xcoff_link_hash_entry *hentry; | |
5461 | asection *esec; | |
5462 | struct internal_reloc *irel; | |
116c20d2 NC |
5463 | asection *tsec; |
5464 | unsigned int reloc_size, byte_size; | |
5465 | ||
5466 | if (bfd_xcoff_is_xcoff64 (output_bfd)) | |
5467 | { | |
5468 | reloc_size = 63; | |
5469 | byte_size = 8; | |
5470 | } | |
5471 | else if (bfd_xcoff_is_xcoff32 (output_bfd)) | |
5472 | { | |
5473 | reloc_size = 31; | |
5474 | byte_size = 4; | |
5475 | } | |
5476 | else | |
5477 | return FALSE; | |
5478 | ||
5479 | sec = h->root.u.def.section; | |
5480 | osec = sec->output_section; | |
5481 | oindx = osec->target_index; | |
5482 | p = sec->contents + h->root.u.def.value; | |
5483 | ||
5484 | hentry = h->descriptor; | |
5485 | BFD_ASSERT (hentry != NULL | |
5486 | && (hentry->root.type == bfd_link_hash_defined | |
5487 | || hentry->root.type == bfd_link_hash_defweak)); | |
5488 | esec = hentry->root.u.def.section; | |
5489 | ||
baf9bed3 | 5490 | irel = flinfo->section_info[oindx].relocs + osec->reloc_count; |
116c20d2 NC |
5491 | irel->r_vaddr = (osec->vma |
5492 | + sec->output_offset | |
5493 | + h->root.u.def.value); | |
5494 | irel->r_symndx = esec->output_section->target_index; | |
5495 | irel->r_type = R_POS; | |
5496 | irel->r_size = reloc_size; | |
baf9bed3 | 5497 | flinfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; |
116c20d2 NC |
5498 | ++osec->reloc_count; |
5499 | ||
baf9bed3 | 5500 | if (!xcoff_create_ldrel (output_bfd, flinfo, osec, |
b3d1832c RS |
5501 | output_bfd, irel, esec, NULL)) |
5502 | return FALSE; | |
116c20d2 NC |
5503 | |
5504 | /* There are three items to write out, | |
5505 | the address of the code | |
5506 | the address of the toc anchor | |
5507 | the environment pointer. | |
5508 | We are ignoring the environment pointer. So set it to zero. */ | |
5509 | if (bfd_xcoff_is_xcoff64 (output_bfd)) | |
5510 | { | |
5511 | bfd_put_64 (output_bfd, | |
5512 | (esec->output_section->vma + esec->output_offset | |
5513 | + hentry->root.u.def.value), | |
5514 | p); | |
5515 | bfd_put_64 (output_bfd, xcoff_data (output_bfd)->toc, p + 8); | |
5516 | bfd_put_64 (output_bfd, (bfd_vma) 0, p + 16); | |
5517 | } | |
5518 | else | |
5519 | { | |
5520 | /* 32 bit backend | |
5521 | This logic was already called above so the error case where | |
5522 | the backend is neither has already been checked. */ | |
5523 | bfd_put_32 (output_bfd, | |
5524 | (esec->output_section->vma + esec->output_offset | |
5525 | + hentry->root.u.def.value), | |
5526 | p); | |
5527 | bfd_put_32 (output_bfd, xcoff_data (output_bfd)->toc, p + 4); | |
5528 | bfd_put_32 (output_bfd, (bfd_vma) 0, p + 8); | |
5529 | } | |
252b5132 | 5530 | |
116c20d2 NC |
5531 | tsec = coff_section_from_bfd_index (output_bfd, |
5532 | xcoff_data (output_bfd)->sntoc); | |
252b5132 | 5533 | |
116c20d2 NC |
5534 | ++irel; |
5535 | irel->r_vaddr = (osec->vma | |
5536 | + sec->output_offset | |
5537 | + h->root.u.def.value | |
5538 | + byte_size); | |
5539 | irel->r_symndx = tsec->output_section->target_index; | |
5540 | irel->r_type = R_POS; | |
5541 | irel->r_size = reloc_size; | |
baf9bed3 | 5542 | flinfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; |
116c20d2 | 5543 | ++osec->reloc_count; |
252b5132 | 5544 | |
baf9bed3 | 5545 | if (!xcoff_create_ldrel (output_bfd, flinfo, osec, |
b3d1832c RS |
5546 | output_bfd, irel, tsec, NULL)) |
5547 | return FALSE; | |
116c20d2 | 5548 | } |
252b5132 | 5549 | |
baf9bed3 | 5550 | if (h->indx >= 0 || flinfo->info->strip == strip_all) |
116c20d2 | 5551 | { |
baf9bed3 | 5552 | BFD_ASSERT (outsym == flinfo->outsyms); |
116c20d2 NC |
5553 | return TRUE; |
5554 | } | |
beb1bf64 | 5555 | |
116c20d2 | 5556 | if (h->indx != -2 |
baf9bed3 JB |
5557 | && (flinfo->info->strip == strip_all |
5558 | || (flinfo->info->strip == strip_some | |
5559 | && bfd_hash_lookup (flinfo->info->keep_hash, h->root.root.string, | |
116c20d2 NC |
5560 | FALSE, FALSE) == NULL))) |
5561 | { | |
baf9bed3 | 5562 | BFD_ASSERT (outsym == flinfo->outsyms); |
116c20d2 NC |
5563 | return TRUE; |
5564 | } | |
dc810e39 | 5565 | |
116c20d2 NC |
5566 | if (h->indx != -2 |
5567 | && (h->flags & (XCOFF_REF_REGULAR | XCOFF_DEF_REGULAR)) == 0) | |
5568 | { | |
baf9bed3 | 5569 | BFD_ASSERT (outsym == flinfo->outsyms); |
116c20d2 NC |
5570 | return TRUE; |
5571 | } | |
dc810e39 | 5572 | |
116c20d2 | 5573 | memset (&aux, 0, sizeof aux); |
252b5132 | 5574 | |
116c20d2 | 5575 | h->indx = obj_raw_syment_count (output_bfd); |
dc810e39 | 5576 | |
b560e2ac AM |
5577 | result = bfd_xcoff_put_symbol_name (output_bfd, flinfo->info, flinfo->strtab, |
5578 | &isym, h->root.root.string); | |
116c20d2 NC |
5579 | if (!result) |
5580 | return FALSE; | |
dc810e39 | 5581 | |
116c20d2 NC |
5582 | if (h->root.type == bfd_link_hash_undefined |
5583 | || h->root.type == bfd_link_hash_undefweak) | |
5584 | { | |
5585 | isym.n_value = 0; | |
5586 | isym.n_scnum = N_UNDEF; | |
8602d4fe RS |
5587 | if (h->root.type == bfd_link_hash_undefweak |
5588 | && C_WEAKEXT == C_AIX_WEAKEXT) | |
5589 | isym.n_sclass = C_WEAKEXT; | |
5590 | else | |
5591 | isym.n_sclass = C_EXT; | |
116c20d2 NC |
5592 | aux.x_csect.x_smtyp = XTY_ER; |
5593 | } | |
5594 | else if ((h->root.type == bfd_link_hash_defined | |
5595 | || h->root.type == bfd_link_hash_defweak) | |
5596 | && h->smclas == XMC_XO) | |
5597 | { | |
c691de6a | 5598 | BFD_ASSERT (bfd_is_abs_symbol (&h->root)); |
116c20d2 NC |
5599 | isym.n_value = h->root.u.def.value; |
5600 | isym.n_scnum = N_UNDEF; | |
d3554ec1 | 5601 | if (h->root.type == bfd_link_hash_defweak |
8602d4fe RS |
5602 | && C_WEAKEXT == C_AIX_WEAKEXT) |
5603 | isym.n_sclass = C_WEAKEXT; | |
5604 | else | |
5605 | isym.n_sclass = C_EXT; | |
116c20d2 NC |
5606 | aux.x_csect.x_smtyp = XTY_ER; |
5607 | } | |
5608 | else if (h->root.type == bfd_link_hash_defined | |
5609 | || h->root.type == bfd_link_hash_defweak) | |
5610 | { | |
5611 | struct xcoff_link_size_list *l; | |
252b5132 | 5612 | |
116c20d2 NC |
5613 | isym.n_value = (h->root.u.def.section->output_section->vma |
5614 | + h->root.u.def.section->output_offset | |
5615 | + h->root.u.def.value); | |
5616 | if (bfd_is_abs_section (h->root.u.def.section->output_section)) | |
5617 | isym.n_scnum = N_ABS; | |
5618 | else | |
5619 | isym.n_scnum = h->root.u.def.section->output_section->target_index; | |
5620 | isym.n_sclass = C_HIDEXT; | |
5621 | aux.x_csect.x_smtyp = XTY_SD; | |
252b5132 | 5622 | |
116c20d2 NC |
5623 | if ((h->flags & XCOFF_HAS_SIZE) != 0) |
5624 | { | |
baf9bed3 | 5625 | for (l = xcoff_hash_table (flinfo->info)->size_list; |
116c20d2 NC |
5626 | l != NULL; |
5627 | l = l->next) | |
5628 | { | |
5629 | if (l->h == h) | |
5630 | { | |
5631 | aux.x_csect.x_scnlen.l = l->size; | |
dc810e39 AM |
5632 | break; |
5633 | } | |
5634 | } | |
dc810e39 | 5635 | } |
252b5132 | 5636 | } |
116c20d2 NC |
5637 | else if (h->root.type == bfd_link_hash_common) |
5638 | { | |
5639 | isym.n_value = (h->root.u.c.p->section->output_section->vma | |
5640 | + h->root.u.c.p->section->output_offset); | |
5641 | isym.n_scnum = h->root.u.c.p->section->output_section->target_index; | |
5642 | isym.n_sclass = C_EXT; | |
5643 | aux.x_csect.x_smtyp = XTY_CM; | |
5644 | aux.x_csect.x_scnlen.l = h->root.u.c.size; | |
5645 | } | |
5646 | else | |
5647 | abort (); | |
5648 | ||
5649 | isym.n_type = T_NULL; | |
5650 | isym.n_numaux = 1; | |
5651 | ||
5652 | bfd_coff_swap_sym_out (output_bfd, (void *) &isym, (void *) outsym); | |
5653 | outsym += bfd_coff_symesz (output_bfd); | |
5654 | ||
5655 | aux.x_csect.x_smclas = h->smclas; | |
5656 | bfd_coff_swap_aux_out (output_bfd, (void *) &aux, T_NULL, isym.n_sclass, 0, 1, | |
5657 | (void *) outsym); | |
5658 | outsym += bfd_coff_auxesz (output_bfd); | |
5659 | ||
5660 | if ((h->root.type == bfd_link_hash_defined | |
5661 | || h->root.type == bfd_link_hash_defweak) | |
5662 | && h->smclas != XMC_XO) | |
5663 | { | |
5664 | /* We just output an SD symbol. Now output an LD symbol. */ | |
5665 | h->indx += 2; | |
252b5132 | 5666 | |
d3554ec1 | 5667 | if (h->root.type == bfd_link_hash_defweak |
8602d4fe RS |
5668 | && C_WEAKEXT == C_AIX_WEAKEXT) |
5669 | isym.n_sclass = C_WEAKEXT; | |
5670 | else | |
5671 | isym.n_sclass = C_EXT; | |
116c20d2 NC |
5672 | bfd_coff_swap_sym_out (output_bfd, (void *) &isym, (void *) outsym); |
5673 | outsym += bfd_coff_symesz (output_bfd); | |
252b5132 | 5674 | |
116c20d2 NC |
5675 | aux.x_csect.x_smtyp = XTY_LD; |
5676 | aux.x_csect.x_scnlen.l = obj_raw_syment_count (output_bfd); | |
5677 | bfd_coff_swap_aux_out (output_bfd, (void *) &aux, T_NULL, C_EXT, 0, 1, | |
5678 | (void *) outsym); | |
5679 | outsym += bfd_coff_auxesz (output_bfd); | |
252b5132 RH |
5680 | } |
5681 | ||
116c20d2 NC |
5682 | pos = obj_sym_filepos (output_bfd); |
5683 | pos += obj_raw_syment_count (output_bfd) * bfd_coff_symesz (output_bfd); | |
baf9bed3 | 5684 | amt = outsym - flinfo->outsyms; |
116c20d2 | 5685 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
baf9bed3 | 5686 | || bfd_bwrite (flinfo->outsyms, amt, output_bfd) != amt) |
116c20d2 NC |
5687 | return FALSE; |
5688 | obj_raw_syment_count (output_bfd) += | |
baf9bed3 | 5689 | (outsym - flinfo->outsyms) / bfd_coff_symesz (output_bfd); |
116c20d2 | 5690 | |
b34976b6 | 5691 | return TRUE; |
252b5132 RH |
5692 | } |
5693 | ||
116c20d2 | 5694 | /* Handle a link order which is supposed to generate a reloc. */ |
beb1bf64 | 5695 | |
b34976b6 | 5696 | static bfd_boolean |
116c20d2 | 5697 | xcoff_reloc_link_order (bfd *output_bfd, |
baf9bed3 | 5698 | struct xcoff_final_link_info *flinfo, |
116c20d2 NC |
5699 | asection *output_section, |
5700 | struct bfd_link_order *link_order) | |
252b5132 | 5701 | { |
116c20d2 NC |
5702 | reloc_howto_type *howto; |
5703 | struct xcoff_link_hash_entry *h; | |
5704 | asection *hsec; | |
5705 | bfd_vma hval; | |
5706 | bfd_vma addend; | |
5707 | struct internal_reloc *irel; | |
5708 | struct xcoff_link_hash_entry **rel_hash_ptr; | |
252b5132 | 5709 | |
116c20d2 NC |
5710 | if (link_order->type == bfd_section_reloc_link_order) |
5711 | /* We need to somehow locate a symbol in the right section. The | |
5712 | symbol must either have a value of zero, or we must adjust | |
5713 | the addend by the value of the symbol. FIXME: Write this | |
5714 | when we need it. The old linker couldn't handle this anyhow. */ | |
5715 | abort (); | |
252b5132 | 5716 | |
116c20d2 NC |
5717 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); |
5718 | if (howto == NULL) | |
e92d460e | 5719 | { |
116c20d2 NC |
5720 | bfd_set_error (bfd_error_bad_value); |
5721 | return FALSE; | |
e92d460e AM |
5722 | } |
5723 | ||
116c20d2 | 5724 | h = ((struct xcoff_link_hash_entry *) |
baf9bed3 | 5725 | bfd_wrapped_link_hash_lookup (output_bfd, flinfo->info, |
116c20d2 NC |
5726 | link_order->u.reloc.p->u.name, |
5727 | FALSE, FALSE, TRUE)); | |
5728 | if (h == NULL) | |
5729 | { | |
1a72702b AM |
5730 | (*flinfo->info->callbacks->unattached_reloc) |
5731 | (flinfo->info, link_order->u.reloc.p->u.name, NULL, NULL, (bfd_vma) 0); | |
116c20d2 NC |
5732 | return TRUE; |
5733 | } | |
252b5132 | 5734 | |
b3d1832c RS |
5735 | hsec = xcoff_symbol_section (h); |
5736 | if (h->root.type == bfd_link_hash_defined | |
5737 | || h->root.type == bfd_link_hash_defweak) | |
5738 | hval = h->root.u.def.value; | |
116c20d2 | 5739 | else |
b3d1832c | 5740 | hval = 0; |
252b5132 | 5741 | |
116c20d2 NC |
5742 | addend = link_order->u.reloc.p->addend; |
5743 | if (hsec != NULL) | |
5744 | addend += (hsec->output_section->vma | |
5745 | + hsec->output_offset | |
5746 | + hval); | |
252b5132 | 5747 | |
116c20d2 NC |
5748 | if (addend != 0) |
5749 | { | |
5750 | bfd_size_type size; | |
5751 | bfd_byte *buf; | |
5752 | bfd_reloc_status_type rstat; | |
5753 | bfd_boolean ok; | |
252b5132 | 5754 | |
116c20d2 NC |
5755 | size = bfd_get_reloc_size (howto); |
5756 | buf = bfd_zmalloc (size); | |
6346d5ca | 5757 | if (buf == NULL && size != 0) |
116c20d2 | 5758 | return FALSE; |
252b5132 | 5759 | |
116c20d2 NC |
5760 | rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf); |
5761 | switch (rstat) | |
dc810e39 | 5762 | { |
116c20d2 NC |
5763 | case bfd_reloc_ok: |
5764 | break; | |
5765 | default: | |
5766 | case bfd_reloc_outofrange: | |
5767 | abort (); | |
5768 | case bfd_reloc_overflow: | |
1a72702b AM |
5769 | (*flinfo->info->callbacks->reloc_overflow) |
5770 | (flinfo->info, NULL, link_order->u.reloc.p->u.name, | |
5771 | howto->name, addend, NULL, NULL, (bfd_vma) 0); | |
116c20d2 NC |
5772 | break; |
5773 | } | |
5774 | ok = bfd_set_section_contents (output_bfd, output_section, (void *) buf, | |
5775 | (file_ptr) link_order->offset, size); | |
5776 | free (buf); | |
5777 | if (! ok) | |
5778 | return FALSE; | |
5779 | } | |
252b5132 | 5780 | |
116c20d2 NC |
5781 | /* Store the reloc information in the right place. It will get |
5782 | swapped and written out at the end of the final_link routine. */ | |
baf9bed3 | 5783 | irel = (flinfo->section_info[output_section->target_index].relocs |
116c20d2 | 5784 | + output_section->reloc_count); |
baf9bed3 | 5785 | rel_hash_ptr = (flinfo->section_info[output_section->target_index].rel_hashes |
116c20d2 | 5786 | + output_section->reloc_count); |
252b5132 | 5787 | |
116c20d2 NC |
5788 | memset (irel, 0, sizeof (struct internal_reloc)); |
5789 | *rel_hash_ptr = NULL; | |
252b5132 | 5790 | |
116c20d2 | 5791 | irel->r_vaddr = output_section->vma + link_order->offset; |
252b5132 | 5792 | |
116c20d2 NC |
5793 | if (h->indx >= 0) |
5794 | irel->r_symndx = h->indx; | |
5795 | else | |
5796 | { | |
5797 | /* Set the index to -2 to force this symbol to get written out. */ | |
5798 | h->indx = -2; | |
5799 | *rel_hash_ptr = h; | |
5800 | irel->r_symndx = 0; | |
5801 | } | |
252b5132 | 5802 | |
116c20d2 NC |
5803 | irel->r_type = howto->type; |
5804 | irel->r_size = howto->bitsize - 1; | |
5805 | if (howto->complain_on_overflow == complain_overflow_signed) | |
5806 | irel->r_size |= 0x80; | |
beb1bf64 | 5807 | |
116c20d2 | 5808 | ++output_section->reloc_count; |
dc810e39 | 5809 | |
116c20d2 | 5810 | /* Now output the reloc to the .loader section. */ |
baf9bed3 | 5811 | if (xcoff_hash_table (flinfo->info)->loader_section) |
116c20d2 | 5812 | { |
baf9bed3 | 5813 | if (!xcoff_create_ldrel (output_bfd, flinfo, output_section, |
b3d1832c RS |
5814 | output_bfd, irel, hsec, h)) |
5815 | return FALSE; | |
beb1bf64 | 5816 | } |
dc810e39 | 5817 | |
116c20d2 NC |
5818 | return TRUE; |
5819 | } | |
beb1bf64 | 5820 | |
116c20d2 | 5821 | /* Do the final link step. */ |
beb1bf64 | 5822 | |
116c20d2 NC |
5823 | bfd_boolean |
5824 | _bfd_xcoff_bfd_final_link (bfd *abfd, struct bfd_link_info *info) | |
5825 | { | |
5826 | bfd_size_type symesz; | |
baf9bed3 | 5827 | struct xcoff_final_link_info flinfo; |
116c20d2 NC |
5828 | asection *o; |
5829 | struct bfd_link_order *p; | |
5830 | bfd_size_type max_contents_size; | |
5831 | bfd_size_type max_sym_count; | |
5832 | bfd_size_type max_lineno_count; | |
5833 | bfd_size_type max_reloc_count; | |
5834 | bfd_size_type max_output_reloc_count; | |
5835 | file_ptr rel_filepos; | |
5836 | unsigned int relsz; | |
5837 | file_ptr line_filepos; | |
5838 | unsigned int linesz; | |
5839 | bfd *sub; | |
5840 | bfd_byte *external_relocs = NULL; | |
5841 | char strbuf[STRING_SIZE_SIZE]; | |
5842 | file_ptr pos; | |
5843 | bfd_size_type amt; | |
dc810e39 | 5844 | |
0e1862bb | 5845 | if (bfd_link_pic (info)) |
116c20d2 | 5846 | abfd->flags |= DYNAMIC; |
dc810e39 | 5847 | |
116c20d2 | 5848 | symesz = bfd_coff_symesz (abfd); |
dc810e39 | 5849 | |
baf9bed3 JB |
5850 | flinfo.info = info; |
5851 | flinfo.output_bfd = abfd; | |
5852 | flinfo.strtab = NULL; | |
5853 | flinfo.section_info = NULL; | |
5854 | flinfo.last_file_index = -1; | |
5855 | flinfo.toc_symindx = -1; | |
5856 | flinfo.internal_syms = NULL; | |
5857 | flinfo.sym_indices = NULL; | |
5858 | flinfo.outsyms = NULL; | |
5859 | flinfo.linenos = NULL; | |
5860 | flinfo.contents = NULL; | |
5861 | flinfo.external_relocs = NULL; | |
252b5132 | 5862 | |
b3d1832c RS |
5863 | if (xcoff_hash_table (info)->loader_section) |
5864 | { | |
baf9bed3 | 5865 | flinfo.ldsym = (xcoff_hash_table (info)->loader_section->contents |
b3d1832c | 5866 | + bfd_xcoff_ldhdrsz (abfd)); |
baf9bed3 | 5867 | flinfo.ldrel = (xcoff_hash_table (info)->loader_section->contents |
b3d1832c RS |
5868 | + bfd_xcoff_ldhdrsz (abfd) |
5869 | + (xcoff_hash_table (info)->ldhdr.l_nsyms | |
5870 | * bfd_xcoff_ldsymsz (abfd))); | |
5871 | } | |
5872 | else | |
5873 | { | |
baf9bed3 JB |
5874 | flinfo.ldsym = NULL; |
5875 | flinfo.ldrel = NULL; | |
b3d1832c | 5876 | } |
252b5132 | 5877 | |
116c20d2 | 5878 | xcoff_data (abfd)->coff.link_info = info; |
beb1bf64 | 5879 | |
baf9bed3 JB |
5880 | flinfo.strtab = _bfd_stringtab_init (); |
5881 | if (flinfo.strtab == NULL) | |
116c20d2 | 5882 | goto error_return; |
beb1bf64 | 5883 | |
3df13c4a RS |
5884 | /* Count the relocation entries required for the output file. |
5885 | (We've already counted the line numbers.) Determine a few | |
5886 | maximum sizes. */ | |
116c20d2 NC |
5887 | max_contents_size = 0; |
5888 | max_lineno_count = 0; | |
5889 | max_reloc_count = 0; | |
5890 | for (o = abfd->sections; o != NULL; o = o->next) | |
5891 | { | |
5892 | o->reloc_count = 0; | |
8423293d | 5893 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
dc810e39 | 5894 | { |
116c20d2 NC |
5895 | if (p->type == bfd_indirect_link_order) |
5896 | { | |
5897 | asection *sec; | |
dc810e39 | 5898 | |
116c20d2 | 5899 | sec = p->u.indirect.section; |
beb1bf64 | 5900 | |
116c20d2 NC |
5901 | /* Mark all sections which are to be included in the |
5902 | link. This will normally be every section. We need | |
5903 | to do this so that we can identify any sections which | |
5904 | the linker has decided to not include. */ | |
5905 | sec->linker_mark = TRUE; | |
beb1bf64 | 5906 | |
116c20d2 | 5907 | o->reloc_count += sec->reloc_count; |
dc810e39 | 5908 | |
9ea2b942 RS |
5909 | if ((sec->flags & SEC_IN_MEMORY) == 0) |
5910 | { | |
5911 | if (sec->rawsize > max_contents_size) | |
5912 | max_contents_size = sec->rawsize; | |
5913 | if (sec->size > max_contents_size) | |
5914 | max_contents_size = sec->size; | |
5915 | } | |
116c20d2 NC |
5916 | if (coff_section_data (sec->owner, sec) != NULL |
5917 | && xcoff_section_data (sec->owner, sec) != NULL | |
5918 | && (xcoff_section_data (sec->owner, sec)->lineno_count | |
5919 | > max_lineno_count)) | |
5920 | max_lineno_count = | |
5921 | xcoff_section_data (sec->owner, sec)->lineno_count; | |
5922 | if (sec->reloc_count > max_reloc_count) | |
5923 | max_reloc_count = sec->reloc_count; | |
5924 | } | |
5925 | else if (p->type == bfd_section_reloc_link_order | |
5926 | || p->type == bfd_symbol_reloc_link_order) | |
5927 | ++o->reloc_count; | |
dc810e39 | 5928 | } |
116c20d2 | 5929 | } |
252b5132 | 5930 | |
116c20d2 NC |
5931 | /* Compute the file positions for all the sections. */ |
5932 | if (abfd->output_has_begun) | |
5933 | { | |
5934 | if (xcoff_hash_table (info)->file_align != 0) | |
5935 | abort (); | |
5936 | } | |
5937 | else | |
5938 | { | |
5939 | bfd_vma file_align; | |
252b5132 | 5940 | |
116c20d2 NC |
5941 | file_align = xcoff_hash_table (info)->file_align; |
5942 | if (file_align != 0) | |
dc810e39 | 5943 | { |
116c20d2 NC |
5944 | bfd_boolean saw_contents; |
5945 | int indx; | |
116c20d2 | 5946 | file_ptr sofar; |
252b5132 | 5947 | |
116c20d2 NC |
5948 | /* Insert .pad sections before every section which has |
5949 | contents and is loaded, if it is preceded by some other | |
5950 | section which has contents and is loaded. */ | |
5951 | saw_contents = TRUE; | |
04dd1667 | 5952 | for (o = abfd->sections; o != NULL; o = o->next) |
116c20d2 | 5953 | { |
04dd1667 | 5954 | if (strcmp (o->name, ".pad") == 0) |
116c20d2 | 5955 | saw_contents = FALSE; |
04dd1667 AM |
5956 | else if ((o->flags & SEC_HAS_CONTENTS) != 0 |
5957 | && (o->flags & SEC_LOAD) != 0) | |
116c20d2 NC |
5958 | { |
5959 | if (! saw_contents) | |
5960 | saw_contents = TRUE; | |
5961 | else | |
5962 | { | |
5daa8fe7 | 5963 | asection *n; |
252b5132 | 5964 | |
116c20d2 NC |
5965 | /* Create a pad section and place it before the section |
5966 | that needs padding. This requires unlinking and | |
5967 | relinking the bfd's section list. */ | |
252b5132 | 5968 | |
117ed4f8 AM |
5969 | n = bfd_make_section_anyway_with_flags (abfd, ".pad", |
5970 | SEC_HAS_CONTENTS); | |
116c20d2 | 5971 | n->alignment_power = 0; |
252b5132 | 5972 | |
5daa8fe7 | 5973 | bfd_section_list_remove (abfd, n); |
04dd1667 | 5974 | bfd_section_list_insert_before (abfd, o, n); |
116c20d2 NC |
5975 | saw_contents = FALSE; |
5976 | } | |
5977 | } | |
5978 | } | |
5979 | ||
5980 | /* Reset the section indices after inserting the new | |
5981 | sections. */ | |
5982 | indx = 0; | |
5983 | for (o = abfd->sections; o != NULL; o = o->next) | |
5984 | { | |
5985 | ++indx; | |
5986 | o->target_index = indx; | |
5987 | } | |
5988 | BFD_ASSERT ((unsigned int) indx == abfd->section_count); | |
5989 | ||
5990 | /* Work out appropriate sizes for the .pad sections to force | |
5991 | each section to land on a page boundary. This bit of | |
5992 | code knows what compute_section_file_positions is going | |
5993 | to do. */ | |
5994 | sofar = bfd_coff_filhsz (abfd); | |
5995 | sofar += bfd_coff_aoutsz (abfd); | |
5996 | sofar += abfd->section_count * bfd_coff_scnhsz (abfd); | |
5997 | for (o = abfd->sections; o != NULL; o = o->next) | |
5998 | if ((bfd_xcoff_is_reloc_count_overflow | |
5999 | (abfd, (bfd_vma) o->reloc_count)) | |
6000 | || (bfd_xcoff_is_lineno_count_overflow | |
6001 | (abfd, (bfd_vma) o->lineno_count))) | |
6002 | /* 64 does not overflow, need to check if 32 does */ | |
6003 | sofar += bfd_coff_scnhsz (abfd); | |
252b5132 | 6004 | |
116c20d2 | 6005 | for (o = abfd->sections; o != NULL; o = o->next) |
dc810e39 | 6006 | { |
116c20d2 NC |
6007 | if (strcmp (o->name, ".pad") == 0) |
6008 | { | |
6009 | bfd_vma pageoff; | |
252b5132 | 6010 | |
116c20d2 NC |
6011 | BFD_ASSERT (o->size == 0); |
6012 | pageoff = sofar & (file_align - 1); | |
6013 | if (pageoff != 0) | |
6014 | { | |
6015 | o->size = file_align - pageoff; | |
6016 | sofar += file_align - pageoff; | |
6017 | o->flags |= SEC_HAS_CONTENTS; | |
6018 | } | |
6019 | } | |
6020 | else | |
6021 | { | |
6022 | if ((o->flags & SEC_HAS_CONTENTS) != 0) | |
6023 | sofar += BFD_ALIGN (o->size, | |
6024 | 1 << o->alignment_power); | |
6025 | } | |
252b5132 RH |
6026 | } |
6027 | } | |
116c20d2 NC |
6028 | |
6029 | if (! bfd_coff_compute_section_file_positions (abfd)) | |
6030 | goto error_return; | |
252b5132 RH |
6031 | } |
6032 | ||
116c20d2 NC |
6033 | /* Allocate space for the pointers we need to keep for the relocs. */ |
6034 | { | |
6035 | unsigned int i; | |
dc810e39 | 6036 | |
116c20d2 NC |
6037 | /* We use section_count + 1, rather than section_count, because |
6038 | the target_index fields are 1 based. */ | |
6039 | amt = abfd->section_count + 1; | |
6040 | amt *= sizeof (struct xcoff_link_section_info); | |
baf9bed3 JB |
6041 | flinfo.section_info = bfd_malloc (amt); |
6042 | if (flinfo.section_info == NULL) | |
116c20d2 NC |
6043 | goto error_return; |
6044 | for (i = 0; i <= abfd->section_count; i++) | |
6045 | { | |
baf9bed3 JB |
6046 | flinfo.section_info[i].relocs = NULL; |
6047 | flinfo.section_info[i].rel_hashes = NULL; | |
6048 | flinfo.section_info[i].toc_rel_hashes = NULL; | |
116c20d2 NC |
6049 | } |
6050 | } | |
beb1bf64 | 6051 | |
116c20d2 NC |
6052 | /* Set the file positions for the relocs. */ |
6053 | rel_filepos = obj_relocbase (abfd); | |
6054 | relsz = bfd_coff_relsz (abfd); | |
6055 | max_output_reloc_count = 0; | |
6056 | for (o = abfd->sections; o != NULL; o = o->next) | |
6057 | { | |
6058 | if (o->reloc_count == 0) | |
6059 | o->rel_filepos = 0; | |
dc810e39 AM |
6060 | else |
6061 | { | |
116c20d2 NC |
6062 | /* A stripped file has no relocs. However, we still |
6063 | allocate the buffers, so that later code doesn't have to | |
6064 | worry about whether we are stripping or not. */ | |
6065 | if (info->strip == strip_all) | |
6066 | o->rel_filepos = 0; | |
6067 | else | |
6068 | { | |
6069 | o->flags |= SEC_RELOC; | |
6070 | o->rel_filepos = rel_filepos; | |
6071 | rel_filepos += o->reloc_count * relsz; | |
6072 | } | |
252b5132 | 6073 | |
116c20d2 NC |
6074 | /* We don't know the indices of global symbols until we have |
6075 | written out all the local symbols. For each section in | |
6076 | the output file, we keep an array of pointers to hash | |
6077 | table entries. Each entry in the array corresponds to a | |
6078 | reloc. When we find a reloc against a global symbol, we | |
6079 | set the corresponding entry in this array so that we can | |
6080 | fix up the symbol index after we have written out all the | |
6081 | local symbols. | |
252b5132 | 6082 | |
116c20d2 NC |
6083 | Because of this problem, we also keep the relocs in |
6084 | memory until the end of the link. This wastes memory. | |
6085 | We could backpatch the file later, I suppose, although it | |
6086 | would be slow. */ | |
6087 | amt = o->reloc_count; | |
6088 | amt *= sizeof (struct internal_reloc); | |
baf9bed3 | 6089 | flinfo.section_info[o->target_index].relocs = bfd_malloc (amt); |
252b5132 | 6090 | |
116c20d2 NC |
6091 | amt = o->reloc_count; |
6092 | amt *= sizeof (struct xcoff_link_hash_entry *); | |
baf9bed3 | 6093 | flinfo.section_info[o->target_index].rel_hashes = bfd_malloc (amt); |
252b5132 | 6094 | |
baf9bed3 JB |
6095 | if (flinfo.section_info[o->target_index].relocs == NULL |
6096 | || flinfo.section_info[o->target_index].rel_hashes == NULL) | |
116c20d2 | 6097 | goto error_return; |
beb1bf64 | 6098 | |
116c20d2 NC |
6099 | if (o->reloc_count > max_output_reloc_count) |
6100 | max_output_reloc_count = o->reloc_count; | |
dc810e39 | 6101 | } |
116c20d2 | 6102 | } |
dc810e39 | 6103 | |
116c20d2 NC |
6104 | /* We now know the size of the relocs, so we can determine the file |
6105 | positions of the line numbers. */ | |
6106 | line_filepos = rel_filepos; | |
baf9bed3 | 6107 | flinfo.line_filepos = line_filepos; |
116c20d2 NC |
6108 | linesz = bfd_coff_linesz (abfd); |
6109 | for (o = abfd->sections; o != NULL; o = o->next) | |
6110 | { | |
6111 | if (o->lineno_count == 0) | |
6112 | o->line_filepos = 0; | |
252b5132 RH |
6113 | else |
6114 | { | |
116c20d2 NC |
6115 | o->line_filepos = line_filepos; |
6116 | line_filepos += o->lineno_count * linesz; | |
252b5132 | 6117 | } |
252b5132 | 6118 | |
116c20d2 NC |
6119 | /* Reset the reloc and lineno counts, so that we can use them to |
6120 | count the number of entries we have output so far. */ | |
6121 | o->reloc_count = 0; | |
6122 | o->lineno_count = 0; | |
252b5132 RH |
6123 | } |
6124 | ||
116c20d2 | 6125 | obj_sym_filepos (abfd) = line_filepos; |
252b5132 | 6126 | |
116c20d2 NC |
6127 | /* Figure out the largest number of symbols in an input BFD. Take |
6128 | the opportunity to clear the output_has_begun fields of all the | |
6129 | input BFD's. We want at least 6 symbols, since that is the | |
6130 | number which xcoff_write_global_symbol may need. */ | |
6131 | max_sym_count = 6; | |
c72f2fb2 | 6132 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
252b5132 | 6133 | { |
116c20d2 NC |
6134 | bfd_size_type sz; |
6135 | ||
6136 | sub->output_has_begun = FALSE; | |
6137 | sz = obj_raw_syment_count (sub); | |
6138 | if (sz > max_sym_count) | |
6139 | max_sym_count = sz; | |
252b5132 RH |
6140 | } |
6141 | ||
116c20d2 NC |
6142 | /* Allocate some buffers used while linking. */ |
6143 | amt = max_sym_count * sizeof (struct internal_syment); | |
baf9bed3 | 6144 | flinfo.internal_syms = bfd_malloc (amt); |
252b5132 | 6145 | |
116c20d2 | 6146 | amt = max_sym_count * sizeof (long); |
baf9bed3 | 6147 | flinfo.sym_indices = bfd_malloc (amt); |
252b5132 | 6148 | |
116c20d2 | 6149 | amt = (max_sym_count + 1) * symesz; |
baf9bed3 | 6150 | flinfo.outsyms = bfd_malloc (amt); |
252b5132 | 6151 | |
116c20d2 | 6152 | amt = max_lineno_count * bfd_coff_linesz (abfd); |
baf9bed3 | 6153 | flinfo.linenos = bfd_malloc (amt); |
252b5132 | 6154 | |
116c20d2 | 6155 | amt = max_contents_size; |
baf9bed3 | 6156 | flinfo.contents = bfd_malloc (amt); |
252b5132 | 6157 | |
116c20d2 | 6158 | amt = max_reloc_count * relsz; |
baf9bed3 JB |
6159 | flinfo.external_relocs = bfd_malloc (amt); |
6160 | ||
6161 | if ((flinfo.internal_syms == NULL && max_sym_count > 0) | |
6162 | || (flinfo.sym_indices == NULL && max_sym_count > 0) | |
6163 | || flinfo.outsyms == NULL | |
6164 | || (flinfo.linenos == NULL && max_lineno_count > 0) | |
6165 | || (flinfo.contents == NULL && max_contents_size > 0) | |
6166 | || (flinfo.external_relocs == NULL && max_reloc_count > 0)) | |
116c20d2 NC |
6167 | goto error_return; |
6168 | ||
6169 | obj_raw_syment_count (abfd) = 0; | |
47dfb2ca RS |
6170 | |
6171 | /* Find a TOC symbol, if we need one. */ | |
baf9bed3 | 6172 | if (!xcoff_find_tc0 (abfd, &flinfo)) |
47dfb2ca | 6173 | goto error_return; |
116c20d2 NC |
6174 | |
6175 | /* We now know the position of everything in the file, except that | |
6176 | we don't know the size of the symbol table and therefore we don't | |
6177 | know where the string table starts. We just build the string | |
6178 | table in memory as we go along. We process all the relocations | |
6179 | for a single input file at once. */ | |
6180 | for (o = abfd->sections; o != NULL; o = o->next) | |
6181 | { | |
8423293d | 6182 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
252b5132 | 6183 | { |
116c20d2 NC |
6184 | if (p->type == bfd_indirect_link_order |
6185 | && p->u.indirect.section->owner->xvec == abfd->xvec) | |
252b5132 | 6186 | { |
116c20d2 NC |
6187 | sub = p->u.indirect.section->owner; |
6188 | if (! sub->output_has_begun) | |
252b5132 | 6189 | { |
baf9bed3 | 6190 | if (! xcoff_link_input_bfd (&flinfo, sub)) |
116c20d2 NC |
6191 | goto error_return; |
6192 | sub->output_has_begun = TRUE; | |
252b5132 RH |
6193 | } |
6194 | } | |
116c20d2 NC |
6195 | else if (p->type == bfd_section_reloc_link_order |
6196 | || p->type == bfd_symbol_reloc_link_order) | |
6197 | { | |
baf9bed3 | 6198 | if (! xcoff_reloc_link_order (abfd, &flinfo, o, p)) |
116c20d2 NC |
6199 | goto error_return; |
6200 | } | |
6201 | else | |
6202 | { | |
6203 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
6204 | goto error_return; | |
6205 | } | |
252b5132 RH |
6206 | } |
6207 | } | |
116c20d2 NC |
6208 | |
6209 | /* Free up the buffers used by xcoff_link_input_bfd. */ | |
baf9bed3 | 6210 | if (flinfo.internal_syms != NULL) |
252b5132 | 6211 | { |
baf9bed3 JB |
6212 | free (flinfo.internal_syms); |
6213 | flinfo.internal_syms = NULL; | |
116c20d2 | 6214 | } |
baf9bed3 | 6215 | if (flinfo.sym_indices != NULL) |
116c20d2 | 6216 | { |
baf9bed3 JB |
6217 | free (flinfo.sym_indices); |
6218 | flinfo.sym_indices = NULL; | |
116c20d2 | 6219 | } |
baf9bed3 | 6220 | if (flinfo.linenos != NULL) |
116c20d2 | 6221 | { |
baf9bed3 JB |
6222 | free (flinfo.linenos); |
6223 | flinfo.linenos = NULL; | |
116c20d2 | 6224 | } |
baf9bed3 | 6225 | if (flinfo.contents != NULL) |
116c20d2 | 6226 | { |
baf9bed3 JB |
6227 | free (flinfo.contents); |
6228 | flinfo.contents = NULL; | |
116c20d2 | 6229 | } |
baf9bed3 | 6230 | if (flinfo.external_relocs != NULL) |
116c20d2 | 6231 | { |
baf9bed3 JB |
6232 | free (flinfo.external_relocs); |
6233 | flinfo.external_relocs = NULL; | |
252b5132 | 6234 | } |
252b5132 | 6235 | |
116c20d2 NC |
6236 | /* The value of the last C_FILE symbol is supposed to be -1. Write |
6237 | it out again. */ | |
baf9bed3 | 6238 | if (flinfo.last_file_index != -1) |
116c20d2 | 6239 | { |
baf9bed3 JB |
6240 | flinfo.last_file.n_value = -(bfd_vma) 1; |
6241 | bfd_coff_swap_sym_out (abfd, (void *) &flinfo.last_file, | |
6242 | (void *) flinfo.outsyms); | |
6243 | pos = obj_sym_filepos (abfd) + flinfo.last_file_index * symesz; | |
116c20d2 | 6244 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 |
baf9bed3 | 6245 | || bfd_bwrite (flinfo.outsyms, symesz, abfd) != symesz) |
116c20d2 NC |
6246 | goto error_return; |
6247 | } | |
252b5132 | 6248 | |
116c20d2 NC |
6249 | /* Write out all the global symbols which do not come from XCOFF |
6250 | input files. */ | |
7686d77d | 6251 | bfd_hash_traverse (&info->hash->table, xcoff_write_global_symbol, &flinfo); |
252b5132 | 6252 | |
baf9bed3 | 6253 | if (flinfo.outsyms != NULL) |
252b5132 | 6254 | { |
baf9bed3 JB |
6255 | free (flinfo.outsyms); |
6256 | flinfo.outsyms = NULL; | |
116c20d2 | 6257 | } |
252b5132 | 6258 | |
116c20d2 NC |
6259 | /* Now that we have written out all the global symbols, we know the |
6260 | symbol indices to use for relocs against them, and we can finally | |
6261 | write out the relocs. */ | |
6262 | amt = max_output_reloc_count * relsz; | |
6263 | external_relocs = bfd_malloc (amt); | |
6264 | if (external_relocs == NULL && max_output_reloc_count != 0) | |
6265 | goto error_return; | |
252b5132 | 6266 | |
116c20d2 NC |
6267 | for (o = abfd->sections; o != NULL; o = o->next) |
6268 | { | |
6269 | struct internal_reloc *irel; | |
6270 | struct internal_reloc *irelend; | |
6271 | struct xcoff_link_hash_entry **rel_hash; | |
6272 | struct xcoff_toc_rel_hash *toc_rel_hash; | |
6273 | bfd_byte *erel; | |
6274 | bfd_size_type rel_size; | |
252b5132 | 6275 | |
116c20d2 NC |
6276 | /* A stripped file has no relocs. */ |
6277 | if (info->strip == strip_all) | |
6278 | { | |
6279 | o->reloc_count = 0; | |
6280 | continue; | |
6281 | } | |
252b5132 | 6282 | |
116c20d2 NC |
6283 | if (o->reloc_count == 0) |
6284 | continue; | |
252b5132 | 6285 | |
baf9bed3 | 6286 | irel = flinfo.section_info[o->target_index].relocs; |
116c20d2 | 6287 | irelend = irel + o->reloc_count; |
baf9bed3 | 6288 | rel_hash = flinfo.section_info[o->target_index].rel_hashes; |
1c1479bf | 6289 | for (; irel < irelend; irel++, rel_hash++) |
116c20d2 NC |
6290 | { |
6291 | if (*rel_hash != NULL) | |
6292 | { | |
6293 | if ((*rel_hash)->indx < 0) | |
6294 | { | |
1a72702b AM |
6295 | (*info->callbacks->unattached_reloc) |
6296 | (info, (*rel_hash)->root.root.string, | |
6297 | NULL, o, irel->r_vaddr); | |
116c20d2 NC |
6298 | (*rel_hash)->indx = 0; |
6299 | } | |
6300 | irel->r_symndx = (*rel_hash)->indx; | |
6301 | } | |
6302 | } | |
252b5132 | 6303 | |
baf9bed3 | 6304 | for (toc_rel_hash = flinfo.section_info[o->target_index].toc_rel_hashes; |
116c20d2 NC |
6305 | toc_rel_hash != NULL; |
6306 | toc_rel_hash = toc_rel_hash->next) | |
6307 | { | |
6308 | if (toc_rel_hash->h->u.toc_indx < 0) | |
6309 | { | |
1a72702b AM |
6310 | (*info->callbacks->unattached_reloc) |
6311 | (info, toc_rel_hash->h->root.root.string, | |
6312 | NULL, o, toc_rel_hash->rel->r_vaddr); | |
116c20d2 NC |
6313 | toc_rel_hash->h->u.toc_indx = 0; |
6314 | } | |
6315 | toc_rel_hash->rel->r_symndx = toc_rel_hash->h->u.toc_indx; | |
6316 | } | |
252b5132 | 6317 | |
116c20d2 NC |
6318 | /* XCOFF requires that the relocs be sorted by address. We tend |
6319 | to produce them in the order in which their containing csects | |
6320 | appear in the symbol table, which is not necessarily by | |
6321 | address. So we sort them here. There may be a better way to | |
6322 | do this. */ | |
baf9bed3 | 6323 | qsort ((void *) flinfo.section_info[o->target_index].relocs, |
116c20d2 NC |
6324 | o->reloc_count, sizeof (struct internal_reloc), |
6325 | xcoff_sort_relocs); | |
252b5132 | 6326 | |
baf9bed3 | 6327 | irel = flinfo.section_info[o->target_index].relocs; |
116c20d2 NC |
6328 | irelend = irel + o->reloc_count; |
6329 | erel = external_relocs; | |
6330 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) | |
6331 | bfd_coff_swap_reloc_out (abfd, (void *) irel, (void *) erel); | |
252b5132 | 6332 | |
116c20d2 NC |
6333 | rel_size = relsz * o->reloc_count; |
6334 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 | |
6335 | || bfd_bwrite ((void *) external_relocs, rel_size, abfd) != rel_size) | |
6336 | goto error_return; | |
252b5132 RH |
6337 | } |
6338 | ||
116c20d2 | 6339 | if (external_relocs != NULL) |
252b5132 | 6340 | { |
116c20d2 NC |
6341 | free (external_relocs); |
6342 | external_relocs = NULL; | |
252b5132 RH |
6343 | } |
6344 | ||
116c20d2 | 6345 | /* Free up the section information. */ |
baf9bed3 | 6346 | if (flinfo.section_info != NULL) |
252b5132 | 6347 | { |
116c20d2 | 6348 | unsigned int i; |
252b5132 | 6349 | |
116c20d2 | 6350 | for (i = 0; i < abfd->section_count; i++) |
252b5132 | 6351 | { |
baf9bed3 JB |
6352 | if (flinfo.section_info[i].relocs != NULL) |
6353 | free (flinfo.section_info[i].relocs); | |
6354 | if (flinfo.section_info[i].rel_hashes != NULL) | |
6355 | free (flinfo.section_info[i].rel_hashes); | |
252b5132 | 6356 | } |
baf9bed3 JB |
6357 | free (flinfo.section_info); |
6358 | flinfo.section_info = NULL; | |
252b5132 RH |
6359 | } |
6360 | ||
116c20d2 | 6361 | /* Write out the loader section contents. */ |
116c20d2 | 6362 | o = xcoff_hash_table (info)->loader_section; |
b3d1832c RS |
6363 | if (o) |
6364 | { | |
baf9bed3 | 6365 | BFD_ASSERT ((bfd_byte *) flinfo.ldrel |
b3d1832c RS |
6366 | == (xcoff_hash_table (info)->loader_section->contents |
6367 | + xcoff_hash_table (info)->ldhdr.l_impoff)); | |
6368 | if (!bfd_set_section_contents (abfd, o->output_section, o->contents, | |
6369 | (file_ptr) o->output_offset, o->size)) | |
6370 | goto error_return; | |
6371 | } | |
252b5132 | 6372 | |
116c20d2 NC |
6373 | /* Write out the magic sections. */ |
6374 | o = xcoff_hash_table (info)->linkage_section; | |
6375 | if (o->size > 0 | |
6376 | && ! bfd_set_section_contents (abfd, o->output_section, o->contents, | |
6377 | (file_ptr) o->output_offset, | |
6378 | o->size)) | |
6379 | goto error_return; | |
6380 | o = xcoff_hash_table (info)->toc_section; | |
6381 | if (o->size > 0 | |
6382 | && ! bfd_set_section_contents (abfd, o->output_section, o->contents, | |
6383 | (file_ptr) o->output_offset, | |
6384 | o->size)) | |
6385 | goto error_return; | |
6386 | o = xcoff_hash_table (info)->descriptor_section; | |
6387 | if (o->size > 0 | |
6388 | && ! bfd_set_section_contents (abfd, o->output_section, o->contents, | |
6389 | (file_ptr) o->output_offset, | |
6390 | o->size)) | |
6391 | goto error_return; | |
252b5132 | 6392 | |
116c20d2 NC |
6393 | /* Write out the string table. */ |
6394 | pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz; | |
6395 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
6396 | goto error_return; | |
6397 | H_PUT_32 (abfd, | |
baf9bed3 | 6398 | _bfd_stringtab_size (flinfo.strtab) + STRING_SIZE_SIZE, |
116c20d2 NC |
6399 | strbuf); |
6400 | amt = STRING_SIZE_SIZE; | |
6401 | if (bfd_bwrite (strbuf, amt, abfd) != amt) | |
6402 | goto error_return; | |
baf9bed3 | 6403 | if (! _bfd_stringtab_emit (abfd, flinfo.strtab)) |
116c20d2 | 6404 | goto error_return; |
252b5132 | 6405 | |
baf9bed3 | 6406 | _bfd_stringtab_free (flinfo.strtab); |
252b5132 | 6407 | |
116c20d2 NC |
6408 | /* Write out the debugging string table. */ |
6409 | o = xcoff_hash_table (info)->debug_section; | |
6410 | if (o != NULL) | |
252b5132 | 6411 | { |
116c20d2 | 6412 | struct bfd_strtab_hash *debug_strtab; |
252b5132 | 6413 | |
116c20d2 NC |
6414 | debug_strtab = xcoff_hash_table (info)->debug_strtab; |
6415 | BFD_ASSERT (o->output_section->size - o->output_offset | |
6416 | >= _bfd_stringtab_size (debug_strtab)); | |
6417 | pos = o->output_section->filepos + o->output_offset; | |
6418 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
6419 | goto error_return; | |
6420 | if (! _bfd_stringtab_emit (abfd, debug_strtab)) | |
6421 | goto error_return; | |
6422 | } | |
252b5132 | 6423 | |
ed48ec2e | 6424 | /* Setting symcount to 0 will cause write_object_contents to |
116c20d2 | 6425 | not try to write out the symbols. */ |
ed48ec2e | 6426 | abfd->symcount = 0; |
252b5132 | 6427 | |
116c20d2 | 6428 | return TRUE; |
252b5132 | 6429 | |
116c20d2 | 6430 | error_return: |
baf9bed3 JB |
6431 | if (flinfo.strtab != NULL) |
6432 | _bfd_stringtab_free (flinfo.strtab); | |
252b5132 | 6433 | |
baf9bed3 | 6434 | if (flinfo.section_info != NULL) |
252b5132 | 6435 | { |
116c20d2 | 6436 | unsigned int i; |
252b5132 | 6437 | |
116c20d2 | 6438 | for (i = 0; i < abfd->section_count; i++) |
252b5132 | 6439 | { |
baf9bed3 JB |
6440 | if (flinfo.section_info[i].relocs != NULL) |
6441 | free (flinfo.section_info[i].relocs); | |
6442 | if (flinfo.section_info[i].rel_hashes != NULL) | |
6443 | free (flinfo.section_info[i].rel_hashes); | |
252b5132 | 6444 | } |
baf9bed3 JB |
6445 | free (flinfo.section_info); |
6446 | } | |
6447 | ||
6448 | if (flinfo.internal_syms != NULL) | |
6449 | free (flinfo.internal_syms); | |
6450 | if (flinfo.sym_indices != NULL) | |
6451 | free (flinfo.sym_indices); | |
6452 | if (flinfo.outsyms != NULL) | |
6453 | free (flinfo.outsyms); | |
6454 | if (flinfo.linenos != NULL) | |
6455 | free (flinfo.linenos); | |
6456 | if (flinfo.contents != NULL) | |
6457 | free (flinfo.contents); | |
6458 | if (flinfo.external_relocs != NULL) | |
6459 | free (flinfo.external_relocs); | |
116c20d2 NC |
6460 | if (external_relocs != NULL) |
6461 | free (external_relocs); | |
6462 | return FALSE; | |
252b5132 | 6463 | } |