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252b5132 | 1 | /* POWER/PowerPC XCOFF linker support. |
fd67aa11 | 2 | Copyright (C) 1995-2024 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 | /* The list of import files. */ |
39 | ||
dc810e39 AM |
40 | struct xcoff_import_file |
41 | { | |
252b5132 RH |
42 | /* The next entry in the list. */ |
43 | struct xcoff_import_file *next; | |
44 | /* The path. */ | |
45 | const char *path; | |
46 | /* The file name. */ | |
47 | const char *file; | |
48 | /* The member name. */ | |
49 | const char *member; | |
50 | }; | |
51 | ||
252b5132 RH |
52 | /* Information we keep for each section in the output file during the |
53 | final link phase. */ | |
54 | ||
dc810e39 AM |
55 | struct xcoff_link_section_info |
56 | { | |
252b5132 RH |
57 | /* The relocs to be output. */ |
58 | struct internal_reloc *relocs; | |
59 | /* For each reloc against a global symbol whose index was not known | |
60 | when the reloc was handled, the global hash table entry. */ | |
61 | struct xcoff_link_hash_entry **rel_hashes; | |
62 | /* If there is a TOC relative reloc against a global symbol, and the | |
63 | index of the TOC symbol is not known when the reloc was handled, | |
64 | an entry is added to this linked list. This is not an array, | |
65 | like rel_hashes, because this case is quite uncommon. */ | |
116c20d2 NC |
66 | struct xcoff_toc_rel_hash |
67 | { | |
fbc4fff4 KH |
68 | struct xcoff_toc_rel_hash *next; |
69 | struct xcoff_link_hash_entry *h; | |
70 | struct internal_reloc *rel; | |
71 | } *toc_rel_hashes; | |
252b5132 RH |
72 | }; |
73 | ||
24c611d1 RS |
74 | /* Information that the XCOFF linker collects about an archive. */ |
75 | struct xcoff_archive_info | |
76 | { | |
77 | /* The archive described by this entry. */ | |
78 | bfd *archive; | |
79 | ||
80 | /* The import path and import filename to use when referring to | |
81 | this archive in the .loader section. */ | |
82 | const char *imppath; | |
83 | const char *impfile; | |
ee698300 RS |
84 | |
85 | /* True if the archive contains a dynamic object. */ | |
86 | unsigned int contains_shared_object_p : 1; | |
87 | ||
88 | /* True if the previous field is valid. */ | |
89 | unsigned int know_contains_shared_object_p : 1; | |
24c611d1 RS |
90 | }; |
91 | ||
d286971a RS |
92 | struct xcoff_link_hash_table |
93 | { | |
94 | struct bfd_link_hash_table root; | |
95 | ||
2d23f965 CC |
96 | /* The stub hash table. */ |
97 | struct bfd_hash_table stub_hash_table; | |
98 | ||
99 | /* Info passed by the linker. */ | |
100 | struct bfd_xcoff_link_params *params; | |
101 | ||
d286971a RS |
102 | /* The .debug string hash table. We need to compute this while |
103 | reading the input files, so that we know how large the .debug | |
104 | section will be before we assign section positions. */ | |
105 | struct bfd_strtab_hash *debug_strtab; | |
106 | ||
107 | /* The .debug section we will use for the final output. */ | |
108 | asection *debug_section; | |
109 | ||
110 | /* The .loader section we will use for the final output. */ | |
111 | asection *loader_section; | |
112 | ||
1876a542 CC |
113 | /* The structure holding information about the .loader section. */ |
114 | struct xcoff_loader_info ldinfo; | |
d286971a RS |
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. */ | |
0a1b45a2 | 137 | bool textro; |
d286971a RS |
138 | |
139 | /* Whether -brtl was specified. */ | |
0a1b45a2 | 140 | bool rtld; |
d286971a RS |
141 | |
142 | /* Whether garbage collection was done. */ | |
0a1b45a2 | 143 | bool gc; |
d286971a RS |
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 | ||
2d23f965 CC |
202 | #define xcoff_stub_hash_entry(ent) \ |
203 | ((struct xcoff_stub_hash_entry *)(ent)) | |
204 | ||
205 | #define xcoff_stub_hash_lookup(table, string, create, copy) \ | |
206 | ((struct xcoff_stub_hash_entry *) \ | |
207 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
208 | ||
0a1b45a2 | 209 | static bool xcoff_mark (struct bfd_link_info *, asection *); |
116c20d2 | 210 | |
252b5132 | 211 | \f |
252b5132 | 212 | |
252b5132 RH |
213 | /* Routines to read XCOFF dynamic information. This don't really |
214 | belong here, but we already have the ldsym manipulation routines | |
215 | here. */ | |
216 | ||
217 | /* Read the contents of a section. */ | |
218 | ||
c920e5cc | 219 | static bfd_byte * |
116c20d2 | 220 | xcoff_get_section_contents (bfd *abfd, asection *sec) |
252b5132 RH |
221 | { |
222 | if (coff_section_data (abfd, sec) == NULL) | |
223 | { | |
986f0783 | 224 | size_t amt = sizeof (struct coff_section_tdata); |
116c20d2 | 225 | |
dc810e39 | 226 | sec->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 | 227 | if (sec->used_by_bfd == NULL) |
c920e5cc | 228 | return NULL; |
252b5132 RH |
229 | } |
230 | ||
c920e5cc AM |
231 | bfd_byte *contents = coff_section_data (abfd, sec)->contents; |
232 | if (contents == NULL) | |
252b5132 | 233 | { |
c920e5cc AM |
234 | if (bfd_malloc_and_get_section (abfd, sec, &contents)) |
235 | coff_section_data (abfd, sec)->contents = contents; | |
236 | else | |
eea6121a | 237 | { |
c9594989 | 238 | free (contents); |
c920e5cc | 239 | contents = NULL; |
eea6121a | 240 | } |
252b5132 RH |
241 | } |
242 | ||
c920e5cc | 243 | return contents; |
252b5132 RH |
244 | } |
245 | ||
246 | /* Get the size required to hold the dynamic symbols. */ | |
247 | ||
248 | long | |
116c20d2 | 249 | _bfd_xcoff_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
250 | { |
251 | asection *lsec; | |
252 | bfd_byte *contents; | |
253 | struct internal_ldhdr ldhdr; | |
254 | ||
255 | if ((abfd->flags & DYNAMIC) == 0) | |
256 | { | |
257 | bfd_set_error (bfd_error_invalid_operation); | |
258 | return -1; | |
259 | } | |
260 | ||
261 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
81ff113f | 262 | if (lsec == NULL || (lsec->flags & SEC_HAS_CONTENTS) == 0) |
252b5132 RH |
263 | { |
264 | bfd_set_error (bfd_error_no_symbols); | |
265 | return -1; | |
266 | } | |
267 | ||
c920e5cc AM |
268 | contents = xcoff_get_section_contents (abfd, lsec); |
269 | if (!contents) | |
252b5132 | 270 | return -1; |
252b5132 | 271 | |
116c20d2 | 272 | bfd_xcoff_swap_ldhdr_in (abfd, (void *) contents, &ldhdr); |
252b5132 RH |
273 | |
274 | return (ldhdr.l_nsyms + 1) * sizeof (asymbol *); | |
275 | } | |
276 | ||
277 | /* Get the dynamic symbols. */ | |
278 | ||
279 | long | |
116c20d2 | 280 | _bfd_xcoff_canonicalize_dynamic_symtab (bfd *abfd, asymbol **psyms) |
252b5132 RH |
281 | { |
282 | asection *lsec; | |
283 | bfd_byte *contents; | |
284 | struct internal_ldhdr ldhdr; | |
285 | const char *strings; | |
beb1bf64 | 286 | bfd_byte *elsym, *elsymend; |
252b5132 RH |
287 | coff_symbol_type *symbuf; |
288 | ||
289 | if ((abfd->flags & DYNAMIC) == 0) | |
290 | { | |
291 | bfd_set_error (bfd_error_invalid_operation); | |
292 | return -1; | |
293 | } | |
294 | ||
295 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
81ff113f | 296 | if (lsec == NULL || (lsec->flags & SEC_HAS_CONTENTS) == 0) |
252b5132 RH |
297 | { |
298 | bfd_set_error (bfd_error_no_symbols); | |
299 | return -1; | |
300 | } | |
301 | ||
c920e5cc AM |
302 | contents = xcoff_get_section_contents (abfd, lsec); |
303 | if (!contents) | |
252b5132 | 304 | return -1; |
252b5132 | 305 | |
beb1bf64 | 306 | bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); |
252b5132 RH |
307 | |
308 | strings = (char *) contents + ldhdr.l_stoff; | |
309 | ||
116c20d2 | 310 | symbuf = bfd_zalloc (abfd, ldhdr.l_nsyms * sizeof (* symbuf)); |
252b5132 RH |
311 | if (symbuf == NULL) |
312 | return -1; | |
313 | ||
beb1bf64 TR |
314 | elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr); |
315 | ||
316 | elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(abfd); | |
317 | for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz(abfd), symbuf++, psyms++) | |
252b5132 RH |
318 | { |
319 | struct internal_ldsym ldsym; | |
320 | ||
beb1bf64 | 321 | bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym); |
252b5132 RH |
322 | |
323 | symbuf->symbol.the_bfd = abfd; | |
324 | ||
325 | if (ldsym._l._l_l._l_zeroes == 0) | |
326 | symbuf->symbol.name = strings + ldsym._l._l_l._l_offset; | |
327 | else | |
328 | { | |
beb1bf64 TR |
329 | char *c; |
330 | ||
dc810e39 | 331 | c = bfd_alloc (abfd, (bfd_size_type) SYMNMLEN + 1); |
beb1bf64 TR |
332 | if (c == NULL) |
333 | return -1; | |
334 | memcpy (c, ldsym._l._l_name, SYMNMLEN); | |
335 | c[SYMNMLEN] = '\0'; | |
336 | symbuf->symbol.name = c; | |
252b5132 RH |
337 | } |
338 | ||
339 | if (ldsym.l_smclas == XMC_XO) | |
340 | symbuf->symbol.section = bfd_abs_section_ptr; | |
341 | else | |
342 | symbuf->symbol.section = coff_section_from_bfd_index (abfd, | |
343 | ldsym.l_scnum); | |
344 | symbuf->symbol.value = ldsym.l_value - symbuf->symbol.section->vma; | |
345 | ||
346 | symbuf->symbol.flags = BSF_NO_FLAGS; | |
347 | if ((ldsym.l_smtype & L_EXPORT) != 0) | |
8602d4fe RS |
348 | { |
349 | if ((ldsym.l_smtype & L_WEAK) != 0) | |
350 | symbuf->symbol.flags |= BSF_WEAK; | |
351 | else | |
352 | symbuf->symbol.flags |= BSF_GLOBAL; | |
353 | } | |
252b5132 RH |
354 | |
355 | /* FIXME: We have no way to record the other information stored | |
b34976b6 | 356 | with the loader symbol. */ |
252b5132 RH |
357 | *psyms = (asymbol *) symbuf; |
358 | } | |
359 | ||
360 | *psyms = NULL; | |
361 | ||
362 | return ldhdr.l_nsyms; | |
363 | } | |
364 | ||
365 | /* Get the size required to hold the dynamic relocs. */ | |
366 | ||
367 | long | |
116c20d2 | 368 | _bfd_xcoff_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
369 | { |
370 | asection *lsec; | |
371 | bfd_byte *contents; | |
372 | struct internal_ldhdr ldhdr; | |
373 | ||
374 | if ((abfd->flags & DYNAMIC) == 0) | |
375 | { | |
376 | bfd_set_error (bfd_error_invalid_operation); | |
377 | return -1; | |
378 | } | |
379 | ||
380 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
81ff113f | 381 | if (lsec == NULL || (lsec->flags & SEC_HAS_CONTENTS) == 0) |
252b5132 RH |
382 | { |
383 | bfd_set_error (bfd_error_no_symbols); | |
384 | return -1; | |
385 | } | |
386 | ||
c920e5cc AM |
387 | contents = xcoff_get_section_contents (abfd, lsec); |
388 | if (!contents) | |
252b5132 | 389 | return -1; |
252b5132 | 390 | |
beb1bf64 | 391 | bfd_xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); |
252b5132 RH |
392 | |
393 | return (ldhdr.l_nreloc + 1) * sizeof (arelent *); | |
394 | } | |
395 | ||
252b5132 RH |
396 | /* Get the dynamic relocs. */ |
397 | ||
398 | long | |
116c20d2 NC |
399 | _bfd_xcoff_canonicalize_dynamic_reloc (bfd *abfd, |
400 | arelent **prelocs, | |
401 | asymbol **syms) | |
252b5132 RH |
402 | { |
403 | asection *lsec; | |
404 | bfd_byte *contents; | |
405 | struct internal_ldhdr ldhdr; | |
406 | arelent *relbuf; | |
beb1bf64 | 407 | bfd_byte *elrel, *elrelend; |
252b5132 RH |
408 | |
409 | if ((abfd->flags & DYNAMIC) == 0) | |
410 | { | |
411 | bfd_set_error (bfd_error_invalid_operation); | |
412 | return -1; | |
413 | } | |
414 | ||
415 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
81ff113f | 416 | if (lsec == NULL || (lsec->flags & SEC_HAS_CONTENTS) == 0) |
252b5132 RH |
417 | { |
418 | bfd_set_error (bfd_error_no_symbols); | |
419 | return -1; | |
420 | } | |
421 | ||
c920e5cc AM |
422 | contents = xcoff_get_section_contents (abfd, lsec); |
423 | if (!contents) | |
252b5132 | 424 | return -1; |
252b5132 | 425 | |
beb1bf64 | 426 | bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); |
252b5132 | 427 | |
116c20d2 | 428 | relbuf = bfd_alloc (abfd, ldhdr.l_nreloc * sizeof (arelent)); |
252b5132 RH |
429 | if (relbuf == NULL) |
430 | return -1; | |
431 | ||
beb1bf64 TR |
432 | elrel = contents + bfd_xcoff_loader_reloc_offset(abfd, &ldhdr); |
433 | ||
434 | elrelend = elrel + ldhdr.l_nreloc * bfd_xcoff_ldrelsz(abfd); | |
dc810e39 AM |
435 | for (; elrel < elrelend; elrel += bfd_xcoff_ldrelsz(abfd), relbuf++, |
436 | prelocs++) | |
252b5132 RH |
437 | { |
438 | struct internal_ldrel ldrel; | |
439 | ||
beb1bf64 | 440 | bfd_xcoff_swap_ldrel_in (abfd, elrel, &ldrel); |
252b5132 RH |
441 | |
442 | if (ldrel.l_symndx >= 3) | |
443 | relbuf->sym_ptr_ptr = syms + (ldrel.l_symndx - 3); | |
444 | else | |
445 | { | |
446 | const char *name; | |
447 | asection *sec; | |
448 | ||
449 | switch (ldrel.l_symndx) | |
450 | { | |
451 | case 0: | |
452 | name = ".text"; | |
453 | break; | |
454 | case 1: | |
455 | name = ".data"; | |
456 | break; | |
457 | case 2: | |
458 | name = ".bss"; | |
459 | break; | |
460 | default: | |
461 | abort (); | |
462 | break; | |
463 | } | |
464 | ||
465 | sec = bfd_get_section_by_name (abfd, name); | |
466 | if (sec == NULL) | |
467 | { | |
468 | bfd_set_error (bfd_error_bad_value); | |
469 | return -1; | |
470 | } | |
471 | ||
472 | relbuf->sym_ptr_ptr = sec->symbol_ptr_ptr; | |
473 | } | |
474 | ||
475 | relbuf->address = ldrel.l_vaddr; | |
476 | relbuf->addend = 0; | |
477 | ||
478 | /* Most dynamic relocs have the same type. FIXME: This is only | |
b34976b6 AM |
479 | correct if ldrel.l_rtype == 0. In other cases, we should use |
480 | a different howto. */ | |
beb1bf64 | 481 | relbuf->howto = bfd_xcoff_dynamic_reloc_howto(abfd); |
252b5132 RH |
482 | |
483 | /* FIXME: We have no way to record the l_rsecnm field. */ | |
484 | ||
485 | *prelocs = relbuf; | |
486 | } | |
487 | ||
488 | *prelocs = NULL; | |
489 | ||
490 | return ldhdr.l_nreloc; | |
491 | } | |
492 | \f | |
24c611d1 RS |
493 | /* Hash functions for xcoff_link_hash_table's archive_info. */ |
494 | ||
495 | static hashval_t | |
496 | xcoff_archive_info_hash (const void *data) | |
497 | { | |
498 | const struct xcoff_archive_info *info; | |
499 | ||
500 | info = (const struct xcoff_archive_info *) data; | |
501 | return htab_hash_pointer (info->archive); | |
502 | } | |
503 | ||
504 | static int | |
505 | xcoff_archive_info_eq (const void *data1, const void *data2) | |
506 | { | |
507 | const struct xcoff_archive_info *info1; | |
508 | const struct xcoff_archive_info *info2; | |
509 | ||
510 | info1 = (const struct xcoff_archive_info *) data1; | |
511 | info2 = (const struct xcoff_archive_info *) data2; | |
512 | return info1->archive == info2->archive; | |
513 | } | |
514 | ||
515 | /* Return information about archive ARCHIVE. Return NULL on error. */ | |
516 | ||
517 | static struct xcoff_archive_info * | |
518 | xcoff_get_archive_info (struct bfd_link_info *info, bfd *archive) | |
519 | { | |
520 | struct xcoff_link_hash_table *htab; | |
521 | struct xcoff_archive_info *entryp, entry; | |
522 | void **slot; | |
523 | ||
524 | htab = xcoff_hash_table (info); | |
525 | entry.archive = archive; | |
526 | slot = htab_find_slot (htab->archive_info, &entry, INSERT); | |
527 | if (!slot) | |
528 | return NULL; | |
529 | ||
530 | entryp = *slot; | |
531 | if (!entryp) | |
532 | { | |
d48b742b | 533 | entryp = bfd_zalloc (info->output_bfd, sizeof (entry)); |
24c611d1 RS |
534 | if (!entryp) |
535 | return NULL; | |
536 | ||
537 | entryp->archive = archive; | |
538 | *slot = entryp; | |
539 | } | |
540 | return entryp; | |
541 | } | |
542 | \f | |
2d23f965 CC |
543 | |
544 | /* Initialize an entry in the stub hash table. */ | |
545 | static struct bfd_hash_entry * | |
546 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
547 | struct bfd_hash_table *table, | |
548 | const char *string) | |
549 | { | |
550 | /* Allocate the structure if it has not already been allocated by a | |
551 | subclass. */ | |
552 | if (entry == NULL) | |
553 | { | |
554 | entry = bfd_hash_allocate (table, | |
555 | sizeof (struct xcoff_stub_hash_entry)); | |
556 | if (entry == NULL) | |
557 | return entry; | |
558 | } | |
559 | ||
560 | /* Call the allocation method of the superclass. */ | |
561 | entry = bfd_hash_newfunc (entry, table, string); | |
562 | if (entry != NULL) | |
563 | { | |
564 | struct xcoff_stub_hash_entry *hsh; | |
565 | ||
566 | /* Initialize the local fields. */ | |
567 | hsh = (struct xcoff_stub_hash_entry *) entry; | |
568 | hsh->stub_type = xcoff_stub_none; | |
569 | hsh->hcsect = NULL; | |
570 | hsh->stub_offset = 0; | |
571 | hsh->target_section = NULL; | |
572 | hsh->htarget = NULL; | |
573 | } | |
574 | ||
575 | return entry; | |
576 | } | |
577 | ||
252b5132 RH |
578 | /* Routine to create an entry in an XCOFF link hash table. */ |
579 | ||
580 | static struct bfd_hash_entry * | |
116c20d2 NC |
581 | xcoff_link_hash_newfunc (struct bfd_hash_entry *entry, |
582 | struct bfd_hash_table *table, | |
583 | const char *string) | |
252b5132 RH |
584 | { |
585 | struct xcoff_link_hash_entry *ret = (struct xcoff_link_hash_entry *) entry; | |
586 | ||
587 | /* Allocate the structure if it has not already been allocated by a | |
588 | subclass. */ | |
116c20d2 NC |
589 | if (ret == NULL) |
590 | ret = bfd_hash_allocate (table, sizeof (* ret)); | |
591 | if (ret == NULL) | |
592 | return NULL; | |
252b5132 RH |
593 | |
594 | /* Call the allocation method of the superclass. */ | |
595 | ret = ((struct xcoff_link_hash_entry *) | |
596 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
597 | table, string)); | |
598 | if (ret != NULL) | |
599 | { | |
600 | /* Set local fields. */ | |
601 | ret->indx = -1; | |
602 | ret->toc_section = NULL; | |
603 | ret->u.toc_indx = -1; | |
604 | ret->descriptor = NULL; | |
605 | ret->ldsym = NULL; | |
606 | ret->ldindx = -1; | |
607 | ret->flags = 0; | |
608 | ret->smclas = XMC_UA; | |
609 | } | |
610 | ||
611 | return (struct bfd_hash_entry *) ret; | |
612 | } | |
613 | ||
68faa637 AM |
614 | /* Destroy an XCOFF link hash table. */ |
615 | ||
d495ab0d AM |
616 | static void |
617 | _bfd_xcoff_bfd_link_hash_table_free (bfd *obfd) | |
68faa637 | 618 | { |
d495ab0d | 619 | struct xcoff_link_hash_table *ret; |
68faa637 | 620 | |
d495ab0d AM |
621 | ret = (struct xcoff_link_hash_table *) obfd->link.hash; |
622 | if (ret->archive_info) | |
623 | htab_delete (ret->archive_info); | |
624 | if (ret->debug_strtab) | |
625 | _bfd_stringtab_free (ret->debug_strtab); | |
2d23f965 CC |
626 | |
627 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 628 | _bfd_generic_link_hash_table_free (obfd); |
68faa637 AM |
629 | } |
630 | ||
631 | /* Create an XCOFF link hash table. */ | |
252b5132 RH |
632 | |
633 | struct bfd_link_hash_table * | |
116c20d2 | 634 | _bfd_xcoff_bfd_link_hash_table_create (bfd *abfd) |
252b5132 RH |
635 | { |
636 | struct xcoff_link_hash_table *ret; | |
bdd2aaf6 | 637 | bool isxcoff64 = false; |
986f0783 | 638 | size_t amt = sizeof (* ret); |
252b5132 | 639 | |
7bf52ea2 | 640 | ret = bfd_zmalloc (amt); |
116c20d2 NC |
641 | if (ret == NULL) |
642 | return NULL; | |
66eb6687 AM |
643 | if (!_bfd_link_hash_table_init (&ret->root, abfd, xcoff_link_hash_newfunc, |
644 | sizeof (struct xcoff_link_hash_entry))) | |
252b5132 | 645 | { |
e2d34d7d | 646 | free (ret); |
116c20d2 | 647 | return NULL; |
252b5132 RH |
648 | } |
649 | ||
2d23f965 CC |
650 | /* Init the stub hash table too. */ |
651 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
652 | sizeof (struct xcoff_stub_hash_entry))) | |
653 | { | |
654 | _bfd_xcoff_bfd_link_hash_table_free (abfd); | |
655 | return NULL; | |
656 | } | |
657 | ||
bdd2aaf6 CC |
658 | isxcoff64 = bfd_coff_debug_string_prefix_length (abfd) == 4; |
659 | ||
660 | ret->debug_strtab = _bfd_xcoff_stringtab_init (isxcoff64); | |
24c611d1 RS |
661 | ret->archive_info = htab_create (37, xcoff_archive_info_hash, |
662 | xcoff_archive_info_eq, NULL); | |
d495ab0d AM |
663 | if (!ret->debug_strtab || !ret->archive_info) |
664 | { | |
665 | _bfd_xcoff_bfd_link_hash_table_free (abfd); | |
666 | return NULL; | |
667 | } | |
668 | ret->root.hash_table_free = _bfd_xcoff_bfd_link_hash_table_free; | |
252b5132 RH |
669 | |
670 | /* The linker will always generate a full a.out header. We need to | |
671 | record that fact now, before the sizeof_headers routine could be | |
672 | called. */ | |
0a1b45a2 | 673 | xcoff_data (abfd)->full_aouthdr = true; |
252b5132 RH |
674 | |
675 | return &ret->root; | |
676 | } | |
252b5132 RH |
677 | \f |
678 | /* Read internal relocs for an XCOFF csect. This is a wrapper around | |
679 | _bfd_coff_read_internal_relocs which tries to take advantage of any | |
680 | relocs which may have been cached for the enclosing section. */ | |
681 | ||
682 | static struct internal_reloc * | |
116c20d2 NC |
683 | xcoff_read_internal_relocs (bfd *abfd, |
684 | asection *sec, | |
0a1b45a2 | 685 | bool cache, |
116c20d2 | 686 | bfd_byte *external_relocs, |
0a1b45a2 | 687 | bool require_internal, |
116c20d2 | 688 | struct internal_reloc *internal_relocs) |
252b5132 RH |
689 | { |
690 | if (coff_section_data (abfd, sec) != NULL | |
691 | && coff_section_data (abfd, sec)->relocs == NULL | |
692 | && xcoff_section_data (abfd, sec) != NULL) | |
693 | { | |
694 | asection *enclosing; | |
695 | ||
696 | enclosing = xcoff_section_data (abfd, sec)->enclosing; | |
697 | ||
698 | if (enclosing != NULL | |
699 | && (coff_section_data (abfd, enclosing) == NULL | |
700 | || coff_section_data (abfd, enclosing)->relocs == NULL) | |
701 | && cache | |
702 | && enclosing->reloc_count > 0) | |
703 | { | |
0a1b45a2 AM |
704 | if (_bfd_coff_read_internal_relocs (abfd, enclosing, true, |
705 | external_relocs, false, NULL) | |
252b5132 RH |
706 | == NULL) |
707 | return NULL; | |
708 | } | |
709 | ||
710 | if (enclosing != NULL | |
711 | && coff_section_data (abfd, enclosing) != NULL | |
712 | && coff_section_data (abfd, enclosing)->relocs != NULL) | |
713 | { | |
714 | size_t off; | |
715 | ||
716 | off = ((sec->rel_filepos - enclosing->rel_filepos) | |
717 | / bfd_coff_relsz (abfd)); | |
beb1bf64 | 718 | |
252b5132 RH |
719 | if (! require_internal) |
720 | return coff_section_data (abfd, enclosing)->relocs + off; | |
721 | memcpy (internal_relocs, | |
722 | coff_section_data (abfd, enclosing)->relocs + off, | |
723 | sec->reloc_count * sizeof (struct internal_reloc)); | |
724 | return internal_relocs; | |
725 | } | |
726 | } | |
727 | ||
728 | return _bfd_coff_read_internal_relocs (abfd, sec, cache, external_relocs, | |
729 | require_internal, internal_relocs); | |
730 | } | |
731 | \f | |
24c611d1 RS |
732 | /* Split FILENAME into an import path and an import filename, |
733 | storing them in *IMPPATH and *IMPFILE respectively. */ | |
734 | ||
0a1b45a2 | 735 | bool |
24c611d1 RS |
736 | bfd_xcoff_split_import_path (bfd *abfd, const char *filename, |
737 | const char **imppath, const char **impfile) | |
738 | { | |
91d6fa6a | 739 | const char *base; |
24c611d1 RS |
740 | size_t length; |
741 | char *path; | |
742 | ||
91d6fa6a NC |
743 | base = lbasename (filename); |
744 | length = base - filename; | |
24c611d1 RS |
745 | if (length == 0) |
746 | /* The filename has no directory component, so use an empty path. */ | |
747 | *imppath = ""; | |
748 | else if (length == 1) | |
749 | /* The filename is in the root directory. */ | |
750 | *imppath = "/"; | |
751 | else | |
752 | { | |
753 | /* Extract the (non-empty) directory part. Note that we don't | |
754 | need to strip duplicate directory separators from any part | |
755 | of the string; the native linker doesn't do that either. */ | |
756 | path = bfd_alloc (abfd, length); | |
757 | if (path == NULL) | |
0a1b45a2 | 758 | return false; |
24c611d1 RS |
759 | memcpy (path, filename, length - 1); |
760 | path[length - 1] = 0; | |
761 | *imppath = path; | |
762 | } | |
91d6fa6a | 763 | *impfile = base; |
0a1b45a2 | 764 | return true; |
24c611d1 RS |
765 | } |
766 | ||
767 | /* Set ARCHIVE's import path as though its filename had been given | |
768 | as FILENAME. */ | |
769 | ||
0a1b45a2 | 770 | bool |
24c611d1 RS |
771 | bfd_xcoff_set_archive_import_path (struct bfd_link_info *info, |
772 | bfd *archive, const char *filename) | |
773 | { | |
774 | struct xcoff_archive_info *archive_info; | |
775 | ||
776 | archive_info = xcoff_get_archive_info (info, archive); | |
777 | return (archive_info != NULL | |
778 | && bfd_xcoff_split_import_path (archive, filename, | |
779 | &archive_info->imppath, | |
780 | &archive_info->impfile)); | |
781 | } | |
782 | ||
783 | /* H is an imported symbol. Set the import module's path, file and member | |
784 | to IMPATH, IMPFILE and IMPMEMBER respectively. All three are null if | |
785 | no specific import module is specified. */ | |
786 | ||
0a1b45a2 | 787 | static bool |
24c611d1 RS |
788 | xcoff_set_import_path (struct bfd_link_info *info, |
789 | struct xcoff_link_hash_entry *h, | |
790 | const char *imppath, const char *impfile, | |
791 | const char *impmember) | |
792 | { | |
793 | unsigned int c; | |
794 | struct xcoff_import_file **pp; | |
795 | ||
796 | /* We overload the ldindx field to hold the l_ifile value for this | |
797 | symbol. */ | |
798 | BFD_ASSERT (h->ldsym == NULL); | |
799 | BFD_ASSERT ((h->flags & XCOFF_BUILT_LDSYM) == 0); | |
800 | if (imppath == NULL) | |
801 | h->ldindx = -1; | |
802 | else | |
803 | { | |
804 | /* We start c at 1 because the first entry in the import list is | |
805 | reserved for the library search path. */ | |
806 | for (pp = &xcoff_hash_table (info)->imports, c = 1; | |
807 | *pp != NULL; | |
808 | pp = &(*pp)->next, ++c) | |
809 | { | |
007d6189 KT |
810 | if (filename_cmp ((*pp)->path, imppath) == 0 |
811 | && filename_cmp ((*pp)->file, impfile) == 0 | |
812 | && filename_cmp ((*pp)->member, impmember) == 0) | |
24c611d1 RS |
813 | break; |
814 | } | |
815 | ||
816 | if (*pp == NULL) | |
817 | { | |
818 | struct xcoff_import_file *n; | |
986f0783 | 819 | size_t amt = sizeof (*n); |
24c611d1 RS |
820 | |
821 | n = bfd_alloc (info->output_bfd, amt); | |
822 | if (n == NULL) | |
0a1b45a2 | 823 | return false; |
24c611d1 RS |
824 | n->next = NULL; |
825 | n->path = imppath; | |
826 | n->file = impfile; | |
827 | n->member = impmember; | |
828 | *pp = n; | |
829 | } | |
830 | h->ldindx = c; | |
831 | } | |
0a1b45a2 | 832 | return true; |
24c611d1 RS |
833 | } |
834 | \f | |
8602d4fe RS |
835 | /* H is the bfd symbol associated with exported .loader symbol LDSYM. |
836 | Return true if LDSYM defines H. */ | |
837 | ||
0a1b45a2 | 838 | static bool |
8602d4fe RS |
839 | xcoff_dynamic_definition_p (struct xcoff_link_hash_entry *h, |
840 | struct internal_ldsym *ldsym) | |
841 | { | |
842 | /* If we didn't know about H before processing LDSYM, LDSYM | |
843 | definitely defines H. */ | |
844 | if (h->root.type == bfd_link_hash_new) | |
0a1b45a2 | 845 | return true; |
8602d4fe RS |
846 | |
847 | /* If H is currently a weak dynamic symbol, and if LDSYM is a strong | |
848 | dynamic symbol, LDSYM trumps the current definition of H. */ | |
849 | if ((ldsym->l_smtype & L_WEAK) == 0 | |
850 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0 | |
851 | && (h->flags & XCOFF_DEF_REGULAR) == 0 | |
852 | && (h->root.type == bfd_link_hash_defweak | |
853 | || h->root.type == bfd_link_hash_undefweak)) | |
0a1b45a2 | 854 | return true; |
8602d4fe | 855 | |
a8bc481f CC |
856 | /* If H is currently undefined, LDSYM defines it. |
857 | However, if H has a hidden visibility, LDSYM must not | |
858 | define it. */ | |
8602d4fe RS |
859 | if ((h->flags & XCOFF_DEF_DYNAMIC) == 0 |
860 | && (h->root.type == bfd_link_hash_undefined | |
a8bc481f CC |
861 | || h->root.type == bfd_link_hash_undefweak) |
862 | && (h->visibility != SYM_V_HIDDEN | |
863 | && h->visibility != SYM_V_INTERNAL)) | |
0a1b45a2 | 864 | return true; |
8602d4fe | 865 | |
0a1b45a2 | 866 | return false; |
8602d4fe RS |
867 | } |
868 | ||
116c20d2 NC |
869 | /* This function is used to add symbols from a dynamic object to the |
870 | global symbol table. */ | |
252b5132 | 871 | |
0a1b45a2 | 872 | static bool |
116c20d2 | 873 | xcoff_link_add_dynamic_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
874 | { |
875 | asection *lsec; | |
beb1bf64 | 876 | bfd_byte *contents; |
252b5132 RH |
877 | struct internal_ldhdr ldhdr; |
878 | const char *strings; | |
beb1bf64 | 879 | bfd_byte *elsym, *elsymend; |
116c20d2 | 880 | struct xcoff_import_file *n; |
116c20d2 NC |
881 | unsigned int c; |
882 | struct xcoff_import_file **pp; | |
252b5132 | 883 | |
116c20d2 NC |
884 | /* We can only handle a dynamic object if we are generating an XCOFF |
885 | output file. */ | |
f13a99db | 886 | if (info->output_bfd->xvec != abfd->xvec) |
116c20d2 | 887 | { |
4eca0228 | 888 | _bfd_error_handler |
871b3ab2 | 889 | (_("%pB: XCOFF shared object when not producing XCOFF output"), |
dae82561 | 890 | abfd); |
116c20d2 | 891 | bfd_set_error (bfd_error_invalid_operation); |
0a1b45a2 | 892 | return false; |
116c20d2 | 893 | } |
252b5132 | 894 | |
116c20d2 NC |
895 | /* The symbols we use from a dynamic object are not the symbols in |
896 | the normal symbol table, but, rather, the symbols in the export | |
897 | table. If there is a global symbol in a dynamic object which is | |
898 | not in the export table, the loader will not be able to find it, | |
899 | so we don't want to find it either. Also, on AIX 4.1.3, shr.o in | |
900 | libc.a has symbols in the export table which are not in the | |
901 | symbol table. */ | |
902 | ||
903 | /* Read in the .loader section. FIXME: We should really use the | |
904 | o_snloader field in the a.out header, rather than grabbing the | |
905 | section by name. */ | |
252b5132 | 906 | lsec = bfd_get_section_by_name (abfd, ".loader"); |
81ff113f | 907 | if (lsec == NULL || (lsec->flags & SEC_HAS_CONTENTS) == 0) |
252b5132 | 908 | { |
4eca0228 | 909 | _bfd_error_handler |
871b3ab2 | 910 | (_("%pB: dynamic object with no .loader section"), |
dae82561 | 911 | abfd); |
116c20d2 | 912 | bfd_set_error (bfd_error_no_symbols); |
0a1b45a2 | 913 | return false; |
252b5132 RH |
914 | } |
915 | ||
c920e5cc AM |
916 | contents = xcoff_get_section_contents (abfd, lsec); |
917 | if (!contents) | |
0a1b45a2 | 918 | return false; |
beb1bf64 | 919 | |
116c20d2 NC |
920 | /* Remove the sections from this object, so that they do not get |
921 | included in the link. */ | |
922 | bfd_section_list_clear (abfd); | |
923 | ||
beb1bf64 | 924 | bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); |
252b5132 | 925 | |
beb1bf64 | 926 | strings = (char *) contents + ldhdr.l_stoff; |
252b5132 | 927 | |
beb1bf64 | 928 | elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr); |
252b5132 | 929 | |
beb1bf64 | 930 | elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(abfd); |
116c20d2 | 931 | |
beb1bf64 | 932 | for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz(abfd)) |
252b5132 RH |
933 | { |
934 | struct internal_ldsym ldsym; | |
935 | char nambuf[SYMNMLEN + 1]; | |
936 | const char *name; | |
116c20d2 | 937 | struct xcoff_link_hash_entry *h; |
252b5132 | 938 | |
beb1bf64 | 939 | bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym); |
252b5132 RH |
940 | |
941 | /* We are only interested in exported symbols. */ | |
942 | if ((ldsym.l_smtype & L_EXPORT) == 0) | |
943 | continue; | |
944 | ||
945 | if (ldsym._l._l_l._l_zeroes == 0) | |
946 | name = strings + ldsym._l._l_l._l_offset; | |
947 | else | |
948 | { | |
949 | memcpy (nambuf, ldsym._l._l_name, SYMNMLEN); | |
950 | nambuf[SYMNMLEN] = '\0'; | |
951 | name = nambuf; | |
952 | } | |
953 | ||
116c20d2 NC |
954 | /* Normally we could not call xcoff_link_hash_lookup in an add |
955 | symbols routine, since we might not be using an XCOFF hash | |
956 | table. However, we verified above that we are using an XCOFF | |
b34976b6 | 957 | hash table. */ |
252b5132 | 958 | |
0a1b45a2 AM |
959 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, true, |
960 | true, true); | |
116c20d2 | 961 | if (h == NULL) |
0a1b45a2 | 962 | return false; |
252b5132 | 963 | |
8602d4fe RS |
964 | if (!xcoff_dynamic_definition_p (h, &ldsym)) |
965 | continue; | |
116c20d2 | 966 | |
8602d4fe RS |
967 | h->flags |= XCOFF_DEF_DYNAMIC; |
968 | h->smclas = ldsym.l_smclas; | |
969 | if (h->smclas == XMC_XO) | |
116c20d2 NC |
970 | { |
971 | /* This symbol has an absolute value. */ | |
8602d4fe RS |
972 | if ((ldsym.l_smtype & L_WEAK) != 0) |
973 | h->root.type = bfd_link_hash_defweak; | |
974 | else | |
975 | h->root.type = bfd_link_hash_defined; | |
116c20d2 NC |
976 | h->root.u.def.section = bfd_abs_section_ptr; |
977 | h->root.u.def.value = ldsym.l_value; | |
978 | } | |
8602d4fe RS |
979 | else |
980 | { | |
981 | /* Otherwise, we don't bother to actually define the symbol, | |
982 | since we don't have a section to put it in anyhow. | |
983 | We assume instead that an undefined XCOFF_DEF_DYNAMIC symbol | |
984 | should be imported from the symbol's undef.abfd. */ | |
985 | if ((ldsym.l_smtype & L_WEAK) != 0) | |
986 | h->root.type = bfd_link_hash_undefweak; | |
987 | else | |
988 | h->root.type = bfd_link_hash_undefined; | |
989 | h->root.u.undef.abfd = abfd; | |
990 | } | |
116c20d2 NC |
991 | |
992 | /* If this symbol defines a function descriptor, then it | |
993 | implicitly defines the function code as well. */ | |
994 | if (h->smclas == XMC_DS | |
995 | || (h->smclas == XMC_XO && name[0] != '.')) | |
996 | h->flags |= XCOFF_DESCRIPTOR; | |
997 | if ((h->flags & XCOFF_DESCRIPTOR) != 0) | |
998 | { | |
999 | struct xcoff_link_hash_entry *hds; | |
1000 | ||
1001 | hds = h->descriptor; | |
1002 | if (hds == NULL) | |
1003 | { | |
1004 | char *dsnm; | |
1005 | ||
1006 | dsnm = bfd_malloc ((bfd_size_type) strlen (name) + 2); | |
1007 | if (dsnm == NULL) | |
0a1b45a2 | 1008 | return false; |
116c20d2 NC |
1009 | dsnm[0] = '.'; |
1010 | strcpy (dsnm + 1, name); | |
1011 | hds = xcoff_link_hash_lookup (xcoff_hash_table (info), dsnm, | |
0a1b45a2 | 1012 | true, true, true); |
116c20d2 NC |
1013 | free (dsnm); |
1014 | if (hds == NULL) | |
0a1b45a2 | 1015 | return false; |
116c20d2 | 1016 | |
116c20d2 NC |
1017 | hds->descriptor = h; |
1018 | h->descriptor = hds; | |
1019 | } | |
1020 | ||
8602d4fe | 1021 | if (xcoff_dynamic_definition_p (hds, &ldsym)) |
116c20d2 | 1022 | { |
8602d4fe RS |
1023 | hds->root.type = h->root.type; |
1024 | hds->flags |= XCOFF_DEF_DYNAMIC; | |
1025 | if (h->smclas == XMC_XO) | |
1026 | { | |
1027 | /* An absolute symbol appears to actually define code, not a | |
1028 | function descriptor. This is how some math functions are | |
1029 | implemented on AIX 4.1. */ | |
1030 | hds->smclas = XMC_XO; | |
1031 | hds->root.u.def.section = bfd_abs_section_ptr; | |
1032 | hds->root.u.def.value = ldsym.l_value; | |
1033 | } | |
1034 | else | |
1035 | { | |
1036 | hds->smclas = XMC_PR; | |
1037 | hds->root.u.undef.abfd = abfd; | |
1038 | /* We do not want to add this to the undefined | |
1039 | symbol list. */ | |
1040 | } | |
116c20d2 NC |
1041 | } |
1042 | } | |
1043 | } | |
1044 | ||
c920e5cc AM |
1045 | free (contents); |
1046 | coff_section_data (abfd, lsec)->contents = NULL; | |
252b5132 | 1047 | |
116c20d2 NC |
1048 | /* Record this file in the import files. */ |
1049 | n = bfd_alloc (abfd, (bfd_size_type) sizeof (struct xcoff_import_file)); | |
1050 | if (n == NULL) | |
0a1b45a2 | 1051 | return false; |
116c20d2 | 1052 | n->next = NULL; |
252b5132 | 1053 | |
b0cffb47 | 1054 | if (abfd->my_archive == NULL || bfd_is_thin_archive (abfd->my_archive)) |
252b5132 | 1055 | { |
765cf5f6 | 1056 | if (!bfd_xcoff_split_import_path (abfd, bfd_get_filename (abfd), |
24c611d1 | 1057 | &n->path, &n->file)) |
0a1b45a2 | 1058 | return false; |
24c611d1 | 1059 | n->member = ""; |
116c20d2 NC |
1060 | } |
1061 | else | |
1062 | { | |
24c611d1 RS |
1063 | struct xcoff_archive_info *archive_info; |
1064 | ||
1065 | archive_info = xcoff_get_archive_info (info, abfd->my_archive); | |
1066 | if (!archive_info->impfile) | |
1067 | { | |
1068 | if (!bfd_xcoff_split_import_path (archive_info->archive, | |
765cf5f6 AM |
1069 | bfd_get_filename (archive_info |
1070 | ->archive), | |
24c611d1 RS |
1071 | &archive_info->imppath, |
1072 | &archive_info->impfile)) | |
0a1b45a2 | 1073 | return false; |
24c611d1 RS |
1074 | } |
1075 | n->path = archive_info->imppath; | |
1076 | n->file = archive_info->impfile; | |
1077 | n->member = bfd_get_filename (abfd); | |
252b5132 RH |
1078 | } |
1079 | ||
116c20d2 NC |
1080 | /* We start c at 1 because the first import file number is reserved |
1081 | for LIBPATH. */ | |
1082 | for (pp = &xcoff_hash_table (info)->imports, c = 1; | |
1083 | *pp != NULL; | |
1084 | pp = &(*pp)->next, ++c) | |
1085 | ; | |
1086 | *pp = n; | |
252b5132 | 1087 | |
116c20d2 | 1088 | xcoff_data (abfd)->import_file_id = c; |
252b5132 | 1089 | |
0a1b45a2 | 1090 | return true; |
252b5132 RH |
1091 | } |
1092 | ||
dc810e39 AM |
1093 | /* xcoff_link_create_extra_sections |
1094 | ||
1095 | Takes care of creating the .loader, .gl, .ds, .debug and sections. */ | |
1096 | ||
0a1b45a2 | 1097 | static bool |
116c20d2 | 1098 | xcoff_link_create_extra_sections (bfd * abfd, struct bfd_link_info *info) |
dc810e39 | 1099 | { |
0a1b45a2 | 1100 | bool return_value = false; |
beb1bf64 | 1101 | |
f13a99db | 1102 | if (info->output_bfd->xvec == abfd->xvec) |
dc810e39 | 1103 | { |
beb1bf64 TR |
1104 | /* We need to build a .loader section, so we do it here. This |
1105 | won't work if we're producing an XCOFF output file with no | |
1106 | XCOFF input files. FIXME. */ | |
1107 | ||
0e1862bb | 1108 | if (!bfd_link_relocatable (info) |
b3d1832c | 1109 | && xcoff_hash_table (info)->loader_section == NULL) |
dc810e39 AM |
1110 | { |
1111 | asection *lsec; | |
117ed4f8 | 1112 | flagword flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY; |
dc810e39 | 1113 | |
117ed4f8 | 1114 | lsec = bfd_make_section_anyway_with_flags (abfd, ".loader", flags); |
dc810e39 | 1115 | if (lsec == NULL) |
116c20d2 NC |
1116 | goto end_return; |
1117 | ||
dc810e39 | 1118 | xcoff_hash_table (info)->loader_section = lsec; |
beb1bf64 | 1119 | } |
beb1bf64 TR |
1120 | |
1121 | /* Likewise for the linkage section. */ | |
dc810e39 AM |
1122 | if (xcoff_hash_table (info)->linkage_section == NULL) |
1123 | { | |
1124 | asection *lsec; | |
117ed4f8 AM |
1125 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
1126 | | SEC_IN_MEMORY); | |
beb1bf64 | 1127 | |
117ed4f8 | 1128 | lsec = bfd_make_section_anyway_with_flags (abfd, ".gl", flags); |
dc810e39 | 1129 | if (lsec == NULL) |
116c20d2 | 1130 | goto end_return; |
beb1bf64 | 1131 | |
dc810e39 | 1132 | xcoff_hash_table (info)->linkage_section = lsec; |
dc810e39 AM |
1133 | lsec->alignment_power = 2; |
1134 | } | |
beb1bf64 TR |
1135 | |
1136 | /* Likewise for the TOC section. */ | |
dc810e39 AM |
1137 | if (xcoff_hash_table (info)->toc_section == NULL) |
1138 | { | |
1139 | asection *tsec; | |
117ed4f8 AM |
1140 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
1141 | | SEC_IN_MEMORY); | |
beb1bf64 | 1142 | |
117ed4f8 | 1143 | tsec = bfd_make_section_anyway_with_flags (abfd, ".tc", flags); |
dc810e39 | 1144 | if (tsec == NULL) |
116c20d2 | 1145 | goto end_return; |
beb1bf64 | 1146 | |
dc810e39 | 1147 | xcoff_hash_table (info)->toc_section = tsec; |
dc810e39 | 1148 | tsec->alignment_power = 2; |
beb1bf64 TR |
1149 | } |
1150 | ||
dc810e39 AM |
1151 | /* Likewise for the descriptor section. */ |
1152 | if (xcoff_hash_table (info)->descriptor_section == NULL) | |
1153 | { | |
1154 | asection *dsec; | |
117ed4f8 AM |
1155 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
1156 | | SEC_IN_MEMORY); | |
dc810e39 | 1157 | |
117ed4f8 | 1158 | dsec = bfd_make_section_anyway_with_flags (abfd, ".ds", flags); |
dc810e39 | 1159 | if (dsec == NULL) |
116c20d2 | 1160 | goto end_return; |
dc810e39 AM |
1161 | |
1162 | xcoff_hash_table (info)->descriptor_section = dsec; | |
dc810e39 AM |
1163 | dsec->alignment_power = 2; |
1164 | } | |
beb1bf64 TR |
1165 | |
1166 | /* Likewise for the .debug section. */ | |
1167 | if (xcoff_hash_table (info)->debug_section == NULL | |
dc810e39 AM |
1168 | && info->strip != strip_all) |
1169 | { | |
1170 | asection *dsec; | |
117ed4f8 | 1171 | flagword flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY; |
beb1bf64 | 1172 | |
117ed4f8 | 1173 | dsec = bfd_make_section_anyway_with_flags (abfd, ".debug", flags); |
dc810e39 | 1174 | if (dsec == NULL) |
116c20d2 NC |
1175 | goto end_return; |
1176 | ||
dc810e39 | 1177 | xcoff_hash_table (info)->debug_section = dsec; |
beb1bf64 | 1178 | } |
dc810e39 AM |
1179 | } |
1180 | ||
0a1b45a2 | 1181 | return_value = true; |
beb1bf64 TR |
1182 | |
1183 | end_return: | |
1184 | ||
1185 | return return_value; | |
1186 | } | |
1187 | ||
116c20d2 NC |
1188 | /* Returns the index of reloc in RELOCS with the least address greater |
1189 | than or equal to ADDRESS. The relocs are sorted by address. */ | |
1190 | ||
1191 | static bfd_size_type | |
1192 | xcoff_find_reloc (struct internal_reloc *relocs, | |
1193 | bfd_size_type count, | |
1194 | bfd_vma address) | |
1195 | { | |
1196 | bfd_size_type min, max, this; | |
1197 | ||
1198 | if (count < 2) | |
1199 | { | |
1200 | if (count == 1 && relocs[0].r_vaddr < address) | |
1201 | return 1; | |
1202 | else | |
1203 | return 0; | |
1204 | } | |
1205 | ||
1206 | min = 0; | |
1207 | max = count; | |
1208 | ||
1209 | /* Do a binary search over (min,max]. */ | |
1210 | while (min + 1 < max) | |
1211 | { | |
1212 | bfd_vma raddr; | |
1213 | ||
1214 | this = (max + min) / 2; | |
1215 | raddr = relocs[this].r_vaddr; | |
1216 | if (raddr > address) | |
1217 | max = this; | |
1218 | else if (raddr < address) | |
1219 | min = this; | |
1220 | else | |
1221 | { | |
1222 | min = this; | |
1223 | break; | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | if (relocs[min].r_vaddr < address) | |
1228 | return min + 1; | |
1229 | ||
1230 | while (min > 0 | |
1231 | && relocs[min - 1].r_vaddr == address) | |
1232 | --min; | |
1233 | ||
1234 | return min; | |
1235 | } | |
1236 | ||
3c503824 CC |
1237 | /* Return true if the symbol has to be added to the linker hash |
1238 | table. */ | |
1239 | static bool | |
1240 | xcoff_link_add_symbols_to_hash_table (struct internal_syment sym, | |
1241 | union internal_auxent aux) | |
1242 | { | |
1243 | /* External symbols must be added. */ | |
1244 | if (EXTERN_SYM_P (sym.n_sclass)) | |
1245 | return true; | |
1246 | ||
1247 | /* Hidden TLS symbols must be added to verify TLS relocations | |
1248 | in xcoff_reloc_type_tls. */ | |
1249 | if (sym.n_sclass == C_HIDEXT | |
1250 | && ((aux.x_csect.x_smclas == XMC_TL | |
1251 | || aux.x_csect.x_smclas == XMC_UL))) | |
1252 | return true; | |
1253 | ||
1254 | return false; | |
1255 | } | |
1256 | ||
252b5132 RH |
1257 | /* Add all the symbols from an object file to the hash table. |
1258 | ||
1259 | XCOFF is a weird format. A normal XCOFF .o files will have three | |
1260 | COFF sections--.text, .data, and .bss--but each COFF section will | |
1261 | contain many csects. These csects are described in the symbol | |
1262 | table. From the linker's point of view, each csect must be | |
1263 | considered a section in its own right. For example, a TOC entry is | |
1264 | handled as a small XMC_TC csect. The linker must be able to merge | |
1265 | different TOC entries together, which means that it must be able to | |
1266 | extract the XMC_TC csects from the .data section of the input .o | |
1267 | file. | |
1268 | ||
1269 | From the point of view of our linker, this is, of course, a hideous | |
1270 | nightmare. We cope by actually creating sections for each csect, | |
1271 | and discarding the original sections. We then have to handle the | |
1272 | relocation entries carefully, since the only way to tell which | |
1273 | csect they belong to is to examine the address. */ | |
1274 | ||
0a1b45a2 | 1275 | static bool |
116c20d2 | 1276 | xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
1277 | { |
1278 | unsigned int n_tmask; | |
1279 | unsigned int n_btshft; | |
0a1b45a2 | 1280 | bool default_copy; |
252b5132 RH |
1281 | bfd_size_type symcount; |
1282 | struct xcoff_link_hash_entry **sym_hash; | |
1283 | asection **csect_cache; | |
3df13c4a | 1284 | unsigned int *lineno_counts; |
252b5132 RH |
1285 | bfd_size_type linesz; |
1286 | asection *o; | |
1287 | asection *last_real; | |
0a1b45a2 | 1288 | bool keep_syms; |
252b5132 RH |
1289 | asection *csect; |
1290 | unsigned int csect_index; | |
1291 | asection *first_csect; | |
1292 | bfd_size_type symesz; | |
1293 | bfd_byte *esym; | |
1294 | bfd_byte *esym_end; | |
dc810e39 | 1295 | struct reloc_info_struct |
beb1bf64 TR |
1296 | { |
1297 | struct internal_reloc *relocs; | |
1298 | asection **csects; | |
1299 | bfd_byte *linenos; | |
1300 | } *reloc_info = NULL; | |
dc810e39 | 1301 | bfd_size_type amt; |
a8bc481f | 1302 | unsigned short visibility; |
252b5132 RH |
1303 | |
1304 | keep_syms = obj_coff_keep_syms (abfd); | |
1305 | ||
1306 | if ((abfd->flags & DYNAMIC) != 0 | |
dc810e39 AM |
1307 | && ! info->static_link) |
1308 | { | |
1309 | if (! xcoff_link_add_dynamic_symbols (abfd, info)) | |
0a1b45a2 | 1310 | return false; |
252b5132 RH |
1311 | } |
1312 | ||
116c20d2 | 1313 | /* Create the loader, toc, gl, ds and debug sections, if needed. */ |
b34976b6 | 1314 | if (! xcoff_link_create_extra_sections (abfd, info)) |
69f284c7 | 1315 | goto error_return; |
252b5132 RH |
1316 | |
1317 | if ((abfd->flags & DYNAMIC) != 0 | |
1318 | && ! info->static_link) | |
0a1b45a2 | 1319 | return true; |
252b5132 RH |
1320 | |
1321 | n_tmask = coff_data (abfd)->local_n_tmask; | |
1322 | n_btshft = coff_data (abfd)->local_n_btshft; | |
1323 | ||
1324 | /* Define macros so that ISFCN, et. al., macros work correctly. */ | |
1325 | #define N_TMASK n_tmask | |
1326 | #define N_BTSHFT n_btshft | |
1327 | ||
1328 | if (info->keep_memory) | |
0a1b45a2 | 1329 | default_copy = false; |
252b5132 | 1330 | else |
0a1b45a2 | 1331 | default_copy = true; |
252b5132 | 1332 | |
dc810e39 | 1333 | symcount = obj_raw_syment_count (abfd); |
252b5132 RH |
1334 | |
1335 | /* We keep a list of the linker hash table entries that correspond | |
1336 | to each external symbol. */ | |
dc810e39 | 1337 | amt = symcount * sizeof (struct xcoff_link_hash_entry *); |
116c20d2 | 1338 | sym_hash = bfd_zalloc (abfd, amt); |
252b5132 RH |
1339 | if (sym_hash == NULL && symcount != 0) |
1340 | goto error_return; | |
1341 | coff_data (abfd)->sym_hashes = (struct coff_link_hash_entry **) sym_hash; | |
252b5132 RH |
1342 | |
1343 | /* Because of the weird stuff we are doing with XCOFF csects, we can | |
1344 | not easily determine which section a symbol is in, so we store | |
1345 | the information in the tdata for the input file. */ | |
dc810e39 | 1346 | amt = symcount * sizeof (asection *); |
116c20d2 | 1347 | csect_cache = bfd_zalloc (abfd, amt); |
252b5132 RH |
1348 | if (csect_cache == NULL && symcount != 0) |
1349 | goto error_return; | |
1350 | xcoff_data (abfd)->csects = csect_cache; | |
252b5132 | 1351 | |
3df13c4a RS |
1352 | /* We garbage-collect line-number information on a symbol-by-symbol |
1353 | basis, so we need to have quick access to the number of entries | |
1354 | per symbol. */ | |
1355 | amt = symcount * sizeof (unsigned int); | |
1356 | lineno_counts = bfd_zalloc (abfd, amt); | |
1357 | if (lineno_counts == NULL && symcount != 0) | |
1358 | goto error_return; | |
1359 | xcoff_data (abfd)->lineno_counts = lineno_counts; | |
1360 | ||
252b5132 RH |
1361 | /* While splitting sections into csects, we need to assign the |
1362 | relocs correctly. The relocs and the csects must both be in | |
1363 | order by VMA within a given section, so we handle this by | |
1364 | scanning along the relocs as we process the csects. We index | |
1365 | into reloc_info using the section target_index. */ | |
dc810e39 AM |
1366 | amt = abfd->section_count + 1; |
1367 | amt *= sizeof (struct reloc_info_struct); | |
116c20d2 | 1368 | reloc_info = bfd_zmalloc (amt); |
252b5132 RH |
1369 | if (reloc_info == NULL) |
1370 | goto error_return; | |
252b5132 RH |
1371 | |
1372 | /* Read in the relocs and line numbers for each section. */ | |
1373 | linesz = bfd_coff_linesz (abfd); | |
1374 | last_real = NULL; | |
dc810e39 AM |
1375 | for (o = abfd->sections; o != NULL; o = o->next) |
1376 | { | |
dc810e39 | 1377 | last_real = o; |
116c20d2 | 1378 | |
dc810e39 AM |
1379 | if ((o->flags & SEC_RELOC) != 0) |
1380 | { | |
dc810e39 | 1381 | reloc_info[o->target_index].relocs = |
0a1b45a2 | 1382 | xcoff_read_internal_relocs (abfd, o, true, NULL, false, NULL); |
dc810e39 AM |
1383 | amt = o->reloc_count; |
1384 | amt *= sizeof (asection *); | |
116c20d2 | 1385 | reloc_info[o->target_index].csects = bfd_zmalloc (amt); |
dc810e39 AM |
1386 | if (reloc_info[o->target_index].csects == NULL) |
1387 | goto error_return; | |
dc810e39 | 1388 | } |
beb1bf64 | 1389 | |
dc810e39 AM |
1390 | if ((info->strip == strip_none || info->strip == strip_some) |
1391 | && o->lineno_count > 0) | |
1392 | { | |
dc810e39 AM |
1393 | bfd_byte *linenos; |
1394 | ||
2bb3687b AM |
1395 | if (bfd_seek (abfd, o->line_filepos, SEEK_SET) != 0) |
1396 | goto error_return; | |
1397 | if (_bfd_mul_overflow (linesz, o->lineno_count, &amt)) | |
1398 | { | |
1399 | bfd_set_error (bfd_error_file_too_big); | |
1400 | goto error_return; | |
1401 | } | |
1402 | linenos = _bfd_malloc_and_read (abfd, amt, amt); | |
dc810e39 AM |
1403 | if (linenos == NULL) |
1404 | goto error_return; | |
1405 | reloc_info[o->target_index].linenos = linenos; | |
dc810e39 | 1406 | } |
252b5132 | 1407 | } |
beb1bf64 | 1408 | |
252b5132 | 1409 | /* Don't let the linker relocation routines discard the symbols. */ |
0a1b45a2 | 1410 | obj_coff_keep_syms (abfd) = true; |
252b5132 RH |
1411 | |
1412 | csect = NULL; | |
1413 | csect_index = 0; | |
1414 | first_csect = NULL; | |
1415 | ||
1416 | symesz = bfd_coff_symesz (abfd); | |
1417 | BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); | |
1418 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
1419 | esym_end = esym + symcount * symesz; | |
252b5132 | 1420 | |
dc810e39 AM |
1421 | while (esym < esym_end) |
1422 | { | |
1423 | struct internal_syment sym; | |
1424 | union internal_auxent aux; | |
1425 | const char *name; | |
1426 | char buf[SYMNMLEN + 1]; | |
1427 | int smtyp; | |
dc810e39 AM |
1428 | asection *section; |
1429 | bfd_vma value; | |
1430 | struct xcoff_link_hash_entry *set_toc; | |
252b5132 | 1431 | |
116c20d2 | 1432 | bfd_coff_swap_sym_in (abfd, (void *) esym, (void *) &sym); |
dc810e39 AM |
1433 | |
1434 | /* In this pass we are only interested in symbols with csect | |
1435 | information. */ | |
8602d4fe | 1436 | if (!CSECT_SYM_P (sym.n_sclass)) |
dc810e39 | 1437 | { |
dc810e39 AM |
1438 | /* Set csect_cache, |
1439 | Normally csect is a .pr, .rw etc. created in the loop | |
1440 | If C_FILE or first time, handle special | |
252b5132 | 1441 | |
4cc02a02 | 1442 | Advance esym, sym_hash, csect_hash ptrs. */ |
5ccfed9b | 1443 | if (sym.n_sclass == C_FILE || sym.n_sclass == C_DWARF) |
4cc02a02 | 1444 | csect = NULL; |
dc810e39 AM |
1445 | if (csect != NULL) |
1446 | *csect_cache = csect; | |
5ccfed9b | 1447 | else if (first_csect == NULL |
07d6d2b8 | 1448 | || sym.n_sclass == C_FILE || sym.n_sclass == C_DWARF) |
dc810e39 AM |
1449 | *csect_cache = coff_section_from_bfd_index (abfd, sym.n_scnum); |
1450 | else | |
1451 | *csect_cache = NULL; | |
1452 | esym += (sym.n_numaux + 1) * symesz; | |
1453 | sym_hash += sym.n_numaux + 1; | |
1454 | csect_cache += sym.n_numaux + 1; | |
3df13c4a | 1455 | lineno_counts += sym.n_numaux + 1; |
dc810e39 AM |
1456 | |
1457 | continue; | |
1458 | } | |
1459 | ||
1460 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
1461 | ||
1462 | if (name == NULL) | |
1463 | goto error_return; | |
252b5132 RH |
1464 | |
1465 | /* If this symbol has line number information attached to it, | |
b34976b6 AM |
1466 | and we're not stripping it, count the number of entries and |
1467 | add them to the count for this csect. In the final link pass | |
1468 | we are going to attach line number information by symbol, | |
1469 | rather than by section, in order to more easily handle | |
1470 | garbage collection. */ | |
dc810e39 AM |
1471 | if ((info->strip == strip_none || info->strip == strip_some) |
1472 | && sym.n_numaux > 1 | |
1473 | && csect != NULL | |
1474 | && ISFCN (sym.n_type)) | |
1475 | { | |
dc810e39 | 1476 | union internal_auxent auxlin; |
252b5132 | 1477 | |
116c20d2 | 1478 | bfd_coff_swap_aux_in (abfd, (void *) (esym + symesz), |
dc810e39 | 1479 | sym.n_type, sym.n_sclass, |
116c20d2 | 1480 | 0, sym.n_numaux, (void *) &auxlin); |
dc810e39 AM |
1481 | |
1482 | if (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0) | |
1483 | { | |
1484 | asection *enclosing; | |
1485 | bfd_signed_vma linoff; | |
1486 | ||
1487 | enclosing = xcoff_section_data (abfd, csect)->enclosing; | |
1488 | if (enclosing == NULL) | |
1489 | { | |
4eca0228 | 1490 | _bfd_error_handler |
695344c0 | 1491 | /* xgettext:c-format */ |
871b3ab2 | 1492 | (_("%pB: `%s' has line numbers but no enclosing section"), |
d003868e | 1493 | abfd, name); |
dc810e39 AM |
1494 | bfd_set_error (bfd_error_bad_value); |
1495 | goto error_return; | |
1496 | } | |
1497 | linoff = (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr | |
1498 | - enclosing->line_filepos); | |
116c20d2 | 1499 | /* Explicit cast to bfd_signed_vma for compiler. */ |
dc810e39 AM |
1500 | if (linoff < (bfd_signed_vma) (enclosing->lineno_count * linesz)) |
1501 | { | |
1502 | struct internal_lineno lin; | |
1503 | bfd_byte *linpstart; | |
1504 | ||
1505 | linpstart = (reloc_info[enclosing->target_index].linenos | |
1506 | + linoff); | |
116c20d2 | 1507 | bfd_coff_swap_lineno_in (abfd, (void *) linpstart, (void *) &lin); |
dc810e39 AM |
1508 | if (lin.l_lnno == 0 |
1509 | && ((bfd_size_type) lin.l_addr.l_symndx | |
1510 | == ((esym | |
1511 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1512 | / symesz))) | |
1513 | { | |
1514 | bfd_byte *linpend, *linp; | |
1515 | ||
1516 | linpend = (reloc_info[enclosing->target_index].linenos | |
1517 | + enclosing->lineno_count * linesz); | |
1518 | for (linp = linpstart + linesz; | |
1519 | linp < linpend; | |
1520 | linp += linesz) | |
1521 | { | |
116c20d2 NC |
1522 | bfd_coff_swap_lineno_in (abfd, (void *) linp, |
1523 | (void *) &lin); | |
dc810e39 AM |
1524 | if (lin.l_lnno == 0) |
1525 | break; | |
1526 | } | |
3df13c4a | 1527 | *lineno_counts = (linp - linpstart) / linesz; |
dc810e39 AM |
1528 | /* The setting of line_filepos will only be |
1529 | useful if all the line number entries for a | |
1530 | csect are contiguous; this only matters for | |
1531 | error reporting. */ | |
1532 | if (csect->line_filepos == 0) | |
1533 | csect->line_filepos = | |
1534 | auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
1535 | } | |
1536 | } | |
beb1bf64 | 1537 | } |
beb1bf64 | 1538 | } |
252b5132 | 1539 | |
a8bc481f CC |
1540 | /* Record visibility. */ |
1541 | visibility = sym.n_type & SYM_V_MASK; | |
1542 | ||
dc810e39 | 1543 | /* Pick up the csect auxiliary information. */ |
dc810e39 AM |
1544 | if (sym.n_numaux == 0) |
1545 | { | |
4eca0228 | 1546 | _bfd_error_handler |
695344c0 | 1547 | /* xgettext:c-format */ |
871b3ab2 | 1548 | (_("%pB: class %d symbol `%s' has no aux entries"), |
d003868e | 1549 | abfd, sym.n_sclass, name); |
dc810e39 AM |
1550 | bfd_set_error (bfd_error_bad_value); |
1551 | goto error_return; | |
1552 | } | |
beb1bf64 | 1553 | |
dc810e39 | 1554 | bfd_coff_swap_aux_in (abfd, |
116c20d2 | 1555 | (void *) (esym + symesz * sym.n_numaux), |
dc810e39 | 1556 | sym.n_type, sym.n_sclass, |
252b5132 | 1557 | sym.n_numaux - 1, sym.n_numaux, |
116c20d2 | 1558 | (void *) &aux); |
252b5132 RH |
1559 | |
1560 | smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); | |
1561 | ||
252b5132 RH |
1562 | section = NULL; |
1563 | value = 0; | |
1564 | set_toc = NULL; | |
1565 | ||
1566 | switch (smtyp) | |
1567 | { | |
1568 | default: | |
4eca0228 | 1569 | _bfd_error_handler |
695344c0 | 1570 | /* xgettext:c-format */ |
871b3ab2 | 1571 | (_("%pB: symbol `%s' has unrecognized csect type %d"), |
d003868e | 1572 | abfd, name, smtyp); |
252b5132 RH |
1573 | bfd_set_error (bfd_error_bad_value); |
1574 | goto error_return; | |
1575 | ||
1576 | case XTY_ER: | |
1577 | /* This is an external reference. */ | |
1578 | if (sym.n_sclass == C_HIDEXT | |
1579 | || sym.n_scnum != N_UNDEF | |
a2c7ca15 | 1580 | || aux.x_csect.x_scnlen.u64 != 0) |
252b5132 | 1581 | { |
4eca0228 | 1582 | _bfd_error_handler |
695344c0 | 1583 | /* xgettext:c-format */ |
2dcf00ce AM |
1584 | (_("%pB: bad XTY_ER symbol `%s': class %d scnum %d " |
1585 | "scnlen %" PRId64), | |
d003868e | 1586 | abfd, name, sym.n_sclass, sym.n_scnum, |
a2c7ca15 | 1587 | aux.x_csect.x_scnlen.u64); |
252b5132 RH |
1588 | bfd_set_error (bfd_error_bad_value); |
1589 | goto error_return; | |
1590 | } | |
1591 | ||
1592 | /* An XMC_XO external reference is actually a reference to | |
b34976b6 | 1593 | an absolute location. */ |
252b5132 RH |
1594 | if (aux.x_csect.x_smclas != XMC_XO) |
1595 | section = bfd_und_section_ptr; | |
1596 | else | |
1597 | { | |
1598 | section = bfd_abs_section_ptr; | |
1599 | value = sym.n_value; | |
1600 | } | |
1601 | break; | |
1602 | ||
1603 | case XTY_SD: | |
252b5132 | 1604 | csect = NULL; |
dc810e39 | 1605 | csect_index = -(unsigned) 1; |
252b5132 RH |
1606 | |
1607 | /* When we see a TOC anchor, we record the TOC value. */ | |
1608 | if (aux.x_csect.x_smclas == XMC_TC0) | |
1609 | { | |
1610 | if (sym.n_sclass != C_HIDEXT | |
a2c7ca15 | 1611 | || aux.x_csect.x_scnlen.u64 != 0) |
252b5132 | 1612 | { |
4eca0228 | 1613 | _bfd_error_handler |
695344c0 | 1614 | /* xgettext:c-format */ |
a2c7ca15 AM |
1615 | (_("%pB: XMC_TC0 symbol `%s' is class %d scnlen %" PRIu64), |
1616 | abfd, name, sym.n_sclass, aux.x_csect.x_scnlen.u64); | |
252b5132 RH |
1617 | bfd_set_error (bfd_error_bad_value); |
1618 | goto error_return; | |
1619 | } | |
1620 | xcoff_data (abfd)->toc = sym.n_value; | |
1621 | } | |
1622 | ||
dc810e39 AM |
1623 | /* We must merge TOC entries for the same symbol. We can |
1624 | merge two TOC entries if they are both C_HIDEXT, they | |
1625 | both have the same name, they are both 4 or 8 bytes long, and | |
1626 | they both have a relocation table entry for an external | |
1627 | symbol with the same name. Unfortunately, this means | |
1628 | that we must look through the relocations. Ick. | |
1629 | ||
1630 | Logic for 32 bit vs 64 bit. | |
1631 | 32 bit has a csect length of 4 for TOC | |
1632 | 64 bit has a csect length of 8 for TOC | |
1633 | ||
3c503824 CC |
1634 | An exception is made for TOC entries with a R_TLSML |
1635 | relocation. This relocation is made for the loader. | |
1636 | We must check that the referenced symbol is the TOC entry | |
1637 | itself. | |
1638 | ||
dc810e39 AM |
1639 | The conditions to get past the if-check are not that bad. |
1640 | They are what is used to create the TOC csects in the first | |
1641 | place. */ | |
1642 | if (aux.x_csect.x_smclas == XMC_TC | |
1643 | && sym.n_sclass == C_HIDEXT | |
f13a99db | 1644 | && info->output_bfd->xvec == abfd->xvec |
dc810e39 | 1645 | && ((bfd_xcoff_is_xcoff32 (abfd) |
a2c7ca15 | 1646 | && aux.x_csect.x_scnlen.u64 == 4) |
dc810e39 | 1647 | || (bfd_xcoff_is_xcoff64 (abfd) |
a2c7ca15 | 1648 | && aux.x_csect.x_scnlen.u64 == 8))) |
dc810e39 AM |
1649 | { |
1650 | asection *enclosing; | |
1651 | struct internal_reloc *relocs; | |
1652 | bfd_size_type relindx; | |
1653 | struct internal_reloc *rel; | |
252b5132 | 1654 | |
dc810e39 AM |
1655 | enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum); |
1656 | if (enclosing == NULL) | |
1657 | goto error_return; | |
252b5132 | 1658 | |
dc810e39 AM |
1659 | relocs = reloc_info[enclosing->target_index].relocs; |
1660 | amt = enclosing->reloc_count; | |
1661 | relindx = xcoff_find_reloc (relocs, amt, sym.n_value); | |
1662 | rel = relocs + relindx; | |
252b5132 | 1663 | |
dc810e39 AM |
1664 | /* 32 bit R_POS r_size is 31 |
1665 | 64 bit R_POS r_size is 63 */ | |
1666 | if (relindx < enclosing->reloc_count | |
1667 | && rel->r_vaddr == (bfd_vma) sym.n_value | |
3c503824 CC |
1668 | && (rel->r_type == R_POS || |
1669 | rel->r_type == R_TLSML) | |
dc810e39 AM |
1670 | && ((bfd_xcoff_is_xcoff32 (abfd) |
1671 | && rel->r_size == 31) | |
1672 | || (bfd_xcoff_is_xcoff64 (abfd) | |
1673 | && rel->r_size == 63))) | |
1674 | { | |
1675 | bfd_byte *erelsym; | |
1676 | ||
1677 | struct internal_syment relsym; | |
1678 | ||
1679 | erelsym = ((bfd_byte *) obj_coff_external_syms (abfd) | |
1680 | + rel->r_symndx * symesz); | |
116c20d2 | 1681 | bfd_coff_swap_sym_in (abfd, (void *) erelsym, (void *) &relsym); |
8602d4fe | 1682 | if (EXTERN_SYM_P (relsym.n_sclass)) |
dc810e39 AM |
1683 | { |
1684 | const char *relname; | |
1685 | char relbuf[SYMNMLEN + 1]; | |
0a1b45a2 | 1686 | bool copy; |
dc810e39 AM |
1687 | struct xcoff_link_hash_entry *h; |
1688 | ||
1689 | /* At this point we know that the TOC entry is | |
1690 | for an externally visible symbol. */ | |
dc810e39 AM |
1691 | relname = _bfd_coff_internal_syment_name (abfd, &relsym, |
1692 | relbuf); | |
1693 | if (relname == NULL) | |
1694 | goto error_return; | |
1695 | ||
1696 | /* We only merge TOC entries if the TC name is | |
1697 | the same as the symbol name. This handles | |
1698 | the normal case, but not common cases like | |
1699 | SYM.P4 which gcc generates to store SYM + 4 | |
1700 | in the TOC. FIXME. */ | |
dc810e39 AM |
1701 | if (strcmp (name, relname) == 0) |
1702 | { | |
1703 | copy = (! info->keep_memory | |
1704 | || relsym._n._n_n._n_zeroes != 0 | |
1705 | || relsym._n._n_n._n_offset == 0); | |
1706 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
0a1b45a2 AM |
1707 | relname, true, copy, |
1708 | false); | |
dc810e39 AM |
1709 | if (h == NULL) |
1710 | goto error_return; | |
1711 | ||
1712 | /* At this point h->root.type could be | |
1713 | bfd_link_hash_new. That should be OK, | |
1714 | since we know for sure that we will come | |
1715 | across this symbol as we step through the | |
1716 | file. */ | |
1717 | ||
1718 | /* We store h in *sym_hash for the | |
1719 | convenience of the relocate_section | |
1720 | function. */ | |
1721 | *sym_hash = h; | |
1722 | ||
1723 | if (h->toc_section != NULL) | |
1724 | { | |
1725 | asection **rel_csects; | |
1726 | ||
1727 | /* We already have a TOC entry for this | |
1728 | symbol, so we can just ignore this | |
1729 | one. */ | |
1730 | rel_csects = | |
1731 | reloc_info[enclosing->target_index].csects; | |
1732 | rel_csects[relindx] = bfd_und_section_ptr; | |
1733 | break; | |
1734 | } | |
1735 | ||
1736 | /* We are about to create a TOC entry for | |
1737 | this symbol. */ | |
1738 | set_toc = h; | |
116c20d2 NC |
1739 | } |
1740 | } | |
3c503824 CC |
1741 | else if (rel->r_type == R_TLSML) |
1742 | { | |
1743 | csect_index = ((esym | |
1744 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1745 | / symesz); | |
1746 | if (((unsigned long) rel->r_symndx) != csect_index) | |
1747 | { | |
1748 | _bfd_error_handler | |
1749 | /* xgettext:c-format */ | |
1750 | (_("%pB: TOC entry `%s' has a R_TLSML" | |
1751 | "relocation not targeting itself"), | |
1752 | abfd, name); | |
1753 | bfd_set_error (bfd_error_bad_value); | |
1754 | goto error_return; | |
1755 | } | |
1756 | } | |
116c20d2 NC |
1757 | } |
1758 | } | |
252b5132 | 1759 | |
252b5132 | 1760 | { |
252b5132 RH |
1761 | asection *enclosing; |
1762 | ||
beb1bf64 TR |
1763 | /* We need to create a new section. We get the name from |
1764 | the csect storage mapping class, so that the linker can | |
1765 | accumulate similar csects together. */ | |
252b5132 | 1766 | |
beb1bf64 | 1767 | csect = bfd_xcoff_create_csect_from_smclas(abfd, &aux, name); |
dc810e39 | 1768 | if (NULL == csect) |
116c20d2 | 1769 | goto error_return; |
beb1bf64 | 1770 | |
dc810e39 AM |
1771 | /* The enclosing section is the main section : .data, .text |
1772 | or .bss that the csect is coming from. */ | |
252b5132 RH |
1773 | enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum); |
1774 | if (enclosing == NULL) | |
1775 | goto error_return; | |
beb1bf64 | 1776 | |
dc810e39 AM |
1777 | if (! bfd_is_abs_section (enclosing) |
1778 | && ((bfd_vma) sym.n_value < enclosing->vma | |
a2c7ca15 | 1779 | || (sym.n_value + aux.x_csect.x_scnlen.u64 |
eea6121a | 1780 | > enclosing->vma + enclosing->size))) |
dc810e39 | 1781 | { |
4eca0228 | 1782 | _bfd_error_handler |
695344c0 | 1783 | /* xgettext:c-format */ |
871b3ab2 | 1784 | (_("%pB: csect `%s' not in enclosing section"), |
d003868e | 1785 | abfd, name); |
dc810e39 AM |
1786 | bfd_set_error (bfd_error_bad_value); |
1787 | goto error_return; | |
1788 | } | |
252b5132 RH |
1789 | csect->vma = sym.n_value; |
1790 | csect->filepos = (enclosing->filepos | |
1791 | + sym.n_value | |
1792 | - enclosing->vma); | |
a2c7ca15 AM |
1793 | csect->size = aux.x_csect.x_scnlen.u64; |
1794 | csect->rawsize = aux.x_csect.x_scnlen.u64; | |
252b5132 RH |
1795 | csect->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; |
1796 | csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp); | |
1797 | ||
1798 | /* Record the enclosing section in the tdata for this new | |
1799 | section. */ | |
dc810e39 | 1800 | amt = sizeof (struct coff_section_tdata); |
116c20d2 | 1801 | csect->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
1802 | if (csect->used_by_bfd == NULL) |
1803 | goto error_return; | |
dc810e39 AM |
1804 | amt = sizeof (struct xcoff_section_tdata); |
1805 | coff_section_data (abfd, csect)->tdata = bfd_zalloc (abfd, amt); | |
252b5132 RH |
1806 | if (coff_section_data (abfd, csect)->tdata == NULL) |
1807 | goto error_return; | |
1808 | xcoff_section_data (abfd, csect)->enclosing = enclosing; | |
1809 | xcoff_section_data (abfd, csect)->lineno_count = | |
1810 | enclosing->lineno_count; | |
1811 | ||
dc810e39 AM |
1812 | if (enclosing->owner == abfd) |
1813 | { | |
1814 | struct internal_reloc *relocs; | |
1815 | bfd_size_type relindx; | |
1816 | struct internal_reloc *rel; | |
1817 | asection **rel_csect; | |
1818 | ||
1819 | relocs = reloc_info[enclosing->target_index].relocs; | |
1820 | amt = enclosing->reloc_count; | |
1821 | relindx = xcoff_find_reloc (relocs, amt, csect->vma); | |
1822 | ||
1823 | rel = relocs + relindx; | |
1824 | rel_csect = (reloc_info[enclosing->target_index].csects | |
1825 | + relindx); | |
1826 | ||
1827 | csect->rel_filepos = (enclosing->rel_filepos | |
1828 | + relindx * bfd_coff_relsz (abfd)); | |
1829 | while (relindx < enclosing->reloc_count | |
1830 | && *rel_csect == NULL | |
eea6121a | 1831 | && rel->r_vaddr < csect->vma + csect->size) |
dc810e39 | 1832 | { |
beb1bf64 | 1833 | |
dc810e39 AM |
1834 | *rel_csect = csect; |
1835 | csect->flags |= SEC_RELOC; | |
1836 | ++csect->reloc_count; | |
1837 | ++relindx; | |
1838 | ++rel; | |
1839 | ++rel_csect; | |
1840 | } | |
252b5132 RH |
1841 | } |
1842 | ||
1843 | /* There are a number of other fields and section flags | |
1844 | which we do not bother to set. */ | |
1845 | ||
1846 | csect_index = ((esym | |
1847 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1848 | / symesz); | |
1849 | ||
1850 | xcoff_section_data (abfd, csect)->first_symndx = csect_index; | |
1851 | ||
1852 | if (first_csect == NULL) | |
1853 | first_csect = csect; | |
1854 | ||
3c503824 CC |
1855 | /* If this symbol must be added to the linker hash table, |
1856 | we treat it as starting at the beginning of the newly | |
1857 | created section. */ | |
1858 | if (xcoff_link_add_symbols_to_hash_table (sym, aux)) | |
252b5132 RH |
1859 | { |
1860 | section = csect; | |
1861 | value = 0; | |
1862 | } | |
1863 | ||
1864 | /* If this is a TOC section for a symbol, record it. */ | |
1865 | if (set_toc != NULL) | |
1866 | set_toc->toc_section = csect; | |
1867 | } | |
1868 | break; | |
1869 | ||
1870 | case XTY_LD: | |
1871 | /* This is a label definition. The x_scnlen field is the | |
dc810e39 | 1872 | symbol index of the csect. Usually the XTY_LD symbol will |
8df8c619 TR |
1873 | follow its appropriate XTY_SD symbol. The .set pseudo op can |
1874 | cause the XTY_LD to not follow the XTY_SD symbol. */ | |
252b5132 | 1875 | { |
0a1b45a2 | 1876 | bool bad; |
252b5132 | 1877 | |
0a1b45a2 | 1878 | bad = false; |
a2c7ca15 AM |
1879 | if (aux.x_csect.x_scnlen.u64 |
1880 | >= (size_t) (esym - (bfd_byte *) obj_coff_external_syms (abfd))) | |
0a1b45a2 | 1881 | bad = true; |
252b5132 RH |
1882 | if (! bad) |
1883 | { | |
a2c7ca15 | 1884 | section = xcoff_data (abfd)->csects[aux.x_csect.x_scnlen.u64]; |
252b5132 RH |
1885 | if (section == NULL |
1886 | || (section->flags & SEC_HAS_CONTENTS) == 0) | |
0a1b45a2 | 1887 | bad = true; |
252b5132 RH |
1888 | } |
1889 | if (bad) | |
1890 | { | |
4eca0228 | 1891 | _bfd_error_handler |
695344c0 | 1892 | /* xgettext:c-format */ |
871b3ab2 | 1893 | (_("%pB: misplaced XTY_LD `%s'"), |
d003868e | 1894 | abfd, name); |
252b5132 RH |
1895 | bfd_set_error (bfd_error_bad_value); |
1896 | goto error_return; | |
1897 | } | |
07d6d2b8 | 1898 | csect = section; |
252b5132 RH |
1899 | value = sym.n_value - csect->vma; |
1900 | } | |
1901 | break; | |
1902 | ||
1903 | case XTY_CM: | |
1904 | /* This is an unitialized csect. We could base the name on | |
b34976b6 AM |
1905 | the storage mapping class, but we don't bother except for |
1906 | an XMC_TD symbol. If this csect is externally visible, | |
1907 | it is a common symbol. We put XMC_TD symbols in sections | |
1908 | named .tocbss, and rely on the linker script to put that | |
1909 | in the TOC area. */ | |
252b5132 | 1910 | |
dc810e39 AM |
1911 | if (aux.x_csect.x_smclas == XMC_TD) |
1912 | { | |
1913 | /* The linker script puts the .td section in the data | |
1914 | section after the .tc section. */ | |
117ed4f8 AM |
1915 | csect = bfd_make_section_anyway_with_flags (abfd, ".td", |
1916 | SEC_ALLOC); | |
dc810e39 | 1917 | } |
1b2cb8e2 CC |
1918 | else if (aux.x_csect.x_smclas == XMC_UL) |
1919 | { | |
1920 | /* This is a thread-local unitialized csect. */ | |
1921 | csect = bfd_make_section_anyway_with_flags (abfd, ".tbss", | |
1922 | SEC_ALLOC | SEC_THREAD_LOCAL); | |
1923 | } | |
dc810e39 | 1924 | else |
117ed4f8 AM |
1925 | csect = bfd_make_section_anyway_with_flags (abfd, ".bss", |
1926 | SEC_ALLOC); | |
116c20d2 | 1927 | |
252b5132 RH |
1928 | if (csect == NULL) |
1929 | goto error_return; | |
1930 | csect->vma = sym.n_value; | |
a2c7ca15 | 1931 | csect->size = aux.x_csect.x_scnlen.u64; |
252b5132 RH |
1932 | csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp); |
1933 | /* There are a number of other fields and section flags | |
1934 | which we do not bother to set. */ | |
1935 | ||
1936 | csect_index = ((esym | |
1937 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1938 | / symesz); | |
1939 | ||
dc810e39 | 1940 | amt = sizeof (struct coff_section_tdata); |
116c20d2 | 1941 | csect->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
1942 | if (csect->used_by_bfd == NULL) |
1943 | goto error_return; | |
dc810e39 AM |
1944 | amt = sizeof (struct xcoff_section_tdata); |
1945 | coff_section_data (abfd, csect)->tdata = bfd_zalloc (abfd, amt); | |
252b5132 RH |
1946 | if (coff_section_data (abfd, csect)->tdata == NULL) |
1947 | goto error_return; | |
1948 | xcoff_section_data (abfd, csect)->first_symndx = csect_index; | |
1949 | ||
1950 | if (first_csect == NULL) | |
1951 | first_csect = csect; | |
1952 | ||
3c503824 | 1953 | if (xcoff_link_add_symbols_to_hash_table (sym, aux)) |
252b5132 RH |
1954 | { |
1955 | csect->flags |= SEC_IS_COMMON; | |
eea6121a | 1956 | csect->size = 0; |
252b5132 | 1957 | section = csect; |
a2c7ca15 | 1958 | value = aux.x_csect.x_scnlen.u64; |
252b5132 RH |
1959 | } |
1960 | ||
1961 | break; | |
1962 | } | |
1963 | ||
1964 | /* Check for magic symbol names. */ | |
dc810e39 AM |
1965 | if ((smtyp == XTY_SD || smtyp == XTY_CM) |
1966 | && aux.x_csect.x_smclas != XMC_TC | |
1967 | && aux.x_csect.x_smclas != XMC_TD) | |
1968 | { | |
dc810e39 AM |
1969 | int i = -1; |
1970 | ||
1971 | if (name[0] == '_') | |
1972 | { | |
1973 | if (strcmp (name, "_text") == 0) | |
1974 | i = XCOFF_SPECIAL_SECTION_TEXT; | |
1975 | else if (strcmp (name, "_etext") == 0) | |
1976 | i = XCOFF_SPECIAL_SECTION_ETEXT; | |
1977 | else if (strcmp (name, "_data") == 0) | |
1978 | i = XCOFF_SPECIAL_SECTION_DATA; | |
1979 | else if (strcmp (name, "_edata") == 0) | |
1980 | i = XCOFF_SPECIAL_SECTION_EDATA; | |
1981 | else if (strcmp (name, "_end") == 0) | |
1982 | i = XCOFF_SPECIAL_SECTION_END; | |
1983 | } | |
1984 | else if (name[0] == 'e' && strcmp (name, "end") == 0) | |
116c20d2 | 1985 | i = XCOFF_SPECIAL_SECTION_END2; |
dc810e39 AM |
1986 | |
1987 | if (i != -1) | |
116c20d2 | 1988 | xcoff_hash_table (info)->special_sections[i] = csect; |
dc810e39 | 1989 | } |
252b5132 RH |
1990 | |
1991 | /* Now we have enough information to add the symbol to the | |
b34976b6 | 1992 | linker hash table. */ |
252b5132 | 1993 | |
3c503824 | 1994 | if (xcoff_link_add_symbols_to_hash_table (sym, aux)) |
252b5132 | 1995 | { |
0a1b45a2 | 1996 | bool copy, ok; |
8602d4fe | 1997 | flagword flags; |
252b5132 RH |
1998 | |
1999 | BFD_ASSERT (section != NULL); | |
2000 | ||
2001 | /* We must copy the name into memory if we got it from the | |
b34976b6 | 2002 | syment itself, rather than the string table. */ |
252b5132 RH |
2003 | copy = default_copy; |
2004 | if (sym._n._n_n._n_zeroes != 0 | |
2005 | || sym._n._n_n._n_offset == 0) | |
0a1b45a2 | 2006 | copy = true; |
252b5132 | 2007 | |
94313f36 RS |
2008 | /* Ignore global linkage code when linking statically. */ |
2009 | if (info->static_link | |
2010 | && (smtyp == XTY_SD || smtyp == XTY_LD) | |
2011 | && aux.x_csect.x_smclas == XMC_GL) | |
2012 | { | |
2013 | section = bfd_und_section_ptr; | |
2014 | value = 0; | |
2015 | } | |
2016 | ||
252b5132 RH |
2017 | /* The AIX linker appears to only detect multiple symbol |
2018 | definitions when there is a reference to the symbol. If | |
2019 | a symbol is defined multiple times, and the only | |
2020 | references are from the same object file, the AIX linker | |
2021 | appears to permit it. It does not merge the different | |
2022 | definitions, but handles them independently. On the | |
2023 | other hand, if there is a reference, the linker reports | |
2024 | an error. | |
2025 | ||
2026 | This matters because the AIX <net/net_globals.h> header | |
2027 | file actually defines an initialized array, so we have to | |
2028 | actually permit that to work. | |
2029 | ||
2030 | Just to make matters even more confusing, the AIX linker | |
2031 | appears to permit multiple symbol definitions whenever | |
2032 | the second definition is in an archive rather than an | |
2033 | object file. This may be a consequence of the manner in | |
2034 | which it handles archives: I think it may load the entire | |
2035 | archive in as separate csects, and then let garbage | |
2036 | collection discard symbols. | |
2037 | ||
2038 | We also have to handle the case of statically linking a | |
2039 | shared object, which will cause symbol redefinitions, | |
2040 | although this is an easier case to detect. */ | |
07d6d2b8 | 2041 | else if (info->output_bfd->xvec == abfd->xvec) |
252b5132 RH |
2042 | { |
2043 | if (! bfd_is_und_section (section)) | |
116c20d2 | 2044 | *sym_hash = xcoff_link_hash_lookup (xcoff_hash_table (info), |
0a1b45a2 | 2045 | name, true, copy, false); |
252b5132 | 2046 | else |
116c20d2 NC |
2047 | /* Make a copy of the symbol name to prevent problems with |
2048 | merging symbols. */ | |
2049 | *sym_hash = ((struct xcoff_link_hash_entry *) | |
2050 | bfd_wrapped_link_hash_lookup (abfd, info, name, | |
0a1b45a2 | 2051 | true, true, false)); |
116c20d2 | 2052 | |
252b5132 RH |
2053 | if (*sym_hash == NULL) |
2054 | goto error_return; | |
2055 | if (((*sym_hash)->root.type == bfd_link_hash_defined | |
2056 | || (*sym_hash)->root.type == bfd_link_hash_defweak) | |
2057 | && ! bfd_is_und_section (section) | |
2058 | && ! bfd_is_com_section (section)) | |
2059 | { | |
2060 | /* This is a second definition of a defined symbol. */ | |
94313f36 RS |
2061 | if (((*sym_hash)->flags & XCOFF_DEF_REGULAR) == 0 |
2062 | && ((*sym_hash)->flags & XCOFF_DEF_DYNAMIC) != 0) | |
252b5132 RH |
2063 | { |
2064 | /* The existing symbol is from a shared library. | |
b34976b6 | 2065 | Replace it. */ |
252b5132 RH |
2066 | (*sym_hash)->root.type = bfd_link_hash_undefined; |
2067 | (*sym_hash)->root.u.undef.abfd = | |
2068 | (*sym_hash)->root.u.def.section->owner; | |
2069 | } | |
2070 | else if (abfd->my_archive != NULL) | |
2071 | { | |
2072 | /* This is a redefinition in an object contained | |
b34976b6 AM |
2073 | in an archive. Just ignore it. See the |
2074 | comment above. */ | |
252b5132 RH |
2075 | section = bfd_und_section_ptr; |
2076 | value = 0; | |
2077 | } | |
8602d4fe RS |
2078 | else if (sym.n_sclass == C_AIX_WEAKEXT |
2079 | || (*sym_hash)->root.type == bfd_link_hash_defweak) | |
2080 | { | |
2081 | /* At least one of the definitions is weak. | |
2082 | Allow the normal rules to take effect. */ | |
2083 | } | |
f6e332e6 | 2084 | else if ((*sym_hash)->root.u.undef.next != NULL |
252b5132 RH |
2085 | || info->hash->undefs_tail == &(*sym_hash)->root) |
2086 | { | |
2087 | /* This symbol has been referenced. In this | |
b34976b6 AM |
2088 | case, we just continue and permit the |
2089 | multiple definition error. See the comment | |
2090 | above about the behaviour of the AIX linker. */ | |
252b5132 RH |
2091 | } |
2092 | else if ((*sym_hash)->smclas == aux.x_csect.x_smclas) | |
2093 | { | |
2094 | /* The symbols are both csects of the same | |
b34976b6 AM |
2095 | class. There is at least a chance that this |
2096 | is a semi-legitimate redefinition. */ | |
252b5132 RH |
2097 | section = bfd_und_section_ptr; |
2098 | value = 0; | |
2099 | (*sym_hash)->flags |= XCOFF_MULTIPLY_DEFINED; | |
2100 | } | |
2101 | } | |
2102 | else if (((*sym_hash)->flags & XCOFF_MULTIPLY_DEFINED) != 0 | |
8602d4fe | 2103 | && (*sym_hash)->root.type == bfd_link_hash_defined |
252b5132 RH |
2104 | && (bfd_is_und_section (section) |
2105 | || bfd_is_com_section (section))) | |
2106 | { | |
2107 | /* This is a reference to a multiply defined symbol. | |
2108 | Report the error now. See the comment above | |
2109 | about the behaviour of the AIX linker. We could | |
2110 | also do this with warning symbols, but I'm not | |
2111 | sure the XCOFF linker is wholly prepared to | |
2112 | handle them, and that would only be a warning, | |
2113 | not an error. */ | |
1a72702b AM |
2114 | (*info->callbacks->multiple_definition) (info, |
2115 | &(*sym_hash)->root, | |
2116 | NULL, NULL, | |
2117 | (bfd_vma) 0); | |
252b5132 RH |
2118 | /* Try not to give this error too many times. */ |
2119 | (*sym_hash)->flags &= ~XCOFF_MULTIPLY_DEFINED; | |
2120 | } | |
a8bc481f CC |
2121 | |
2122 | ||
2123 | /* If the symbol is hidden or internal, completely undo | |
2124 | any dynamic link state. */ | |
2125 | if ((*sym_hash)->flags & XCOFF_DEF_DYNAMIC | |
2126 | && (visibility == SYM_V_HIDDEN | |
2127 | || visibility == SYM_V_INTERNAL)) | |
2128 | (*sym_hash)->flags &= ~XCOFF_DEF_DYNAMIC; | |
2129 | else | |
2130 | { | |
2131 | /* Keep the most constraining visibility. */ | |
2132 | unsigned short hvis = (*sym_hash)->visibility; | |
2133 | if (visibility && ( !hvis || visibility < hvis)) | |
2134 | (*sym_hash)->visibility = visibility; | |
2135 | } | |
2136 | ||
252b5132 RH |
2137 | } |
2138 | ||
2139 | /* _bfd_generic_link_add_one_symbol may call the linker to | |
2140 | generate an error message, and the linker may try to read | |
2141 | the symbol table to give a good error. Right now, the | |
2142 | line numbers are in an inconsistent state, since they are | |
2143 | counted both in the real sections and in the new csects. | |
2144 | We need to leave the count in the real sections so that | |
2145 | the linker can report the line number of the error | |
2146 | correctly, so temporarily clobber the link to the csects | |
2147 | so that the linker will not try to read the line numbers | |
2148 | a second time from the csects. */ | |
2149 | BFD_ASSERT (last_real->next == first_csect); | |
2150 | last_real->next = NULL; | |
8602d4fe | 2151 | flags = (sym.n_sclass == C_EXT ? BSF_GLOBAL : BSF_WEAK); |
0eb32b6e | 2152 | ok = (_bfd_generic_link_add_one_symbol |
0a1b45a2 | 2153 | (info, abfd, name, flags, section, value, NULL, copy, true, |
0eb32b6e | 2154 | (struct bfd_link_hash_entry **) sym_hash)); |
252b5132 | 2155 | last_real->next = first_csect; |
0eb32b6e AM |
2156 | if (!ok) |
2157 | goto error_return; | |
252b5132 RH |
2158 | |
2159 | if (smtyp == XTY_CM) | |
2160 | { | |
2161 | if ((*sym_hash)->root.type != bfd_link_hash_common | |
2162 | || (*sym_hash)->root.u.c.p->section != csect) | |
116c20d2 NC |
2163 | /* We don't need the common csect we just created. */ |
2164 | csect->size = 0; | |
252b5132 | 2165 | else |
116c20d2 NC |
2166 | (*sym_hash)->root.u.c.p->alignment_power |
2167 | = csect->alignment_power; | |
252b5132 RH |
2168 | } |
2169 | ||
07d6d2b8 | 2170 | if (info->output_bfd->xvec == abfd->xvec) |
252b5132 RH |
2171 | { |
2172 | int flag; | |
2173 | ||
94313f36 RS |
2174 | if (smtyp == XTY_ER |
2175 | || smtyp == XTY_CM | |
2176 | || section == bfd_und_section_ptr) | |
252b5132 RH |
2177 | flag = XCOFF_REF_REGULAR; |
2178 | else | |
2179 | flag = XCOFF_DEF_REGULAR; | |
2180 | (*sym_hash)->flags |= flag; | |
2181 | ||
2182 | if ((*sym_hash)->smclas == XMC_UA | |
2183 | || flag == XCOFF_DEF_REGULAR) | |
2184 | (*sym_hash)->smclas = aux.x_csect.x_smclas; | |
2185 | } | |
2186 | } | |
2187 | ||
4cc02a02 RS |
2188 | if (smtyp == XTY_ER) |
2189 | *csect_cache = section; | |
2190 | else | |
2191 | { | |
2192 | *csect_cache = csect; | |
2193 | if (csect != NULL) | |
2194 | xcoff_section_data (abfd, csect)->last_symndx | |
2195 | = (esym - (bfd_byte *) obj_coff_external_syms (abfd)) / symesz; | |
2196 | } | |
252b5132 RH |
2197 | |
2198 | esym += (sym.n_numaux + 1) * symesz; | |
2199 | sym_hash += sym.n_numaux + 1; | |
2200 | csect_cache += sym.n_numaux + 1; | |
3df13c4a | 2201 | lineno_counts += sym.n_numaux + 1; |
252b5132 RH |
2202 | } |
2203 | ||
2204 | BFD_ASSERT (last_real == NULL || last_real->next == first_csect); | |
2205 | ||
2206 | /* Make sure that we have seen all the relocs. */ | |
2207 | for (o = abfd->sections; o != first_csect; o = o->next) | |
2208 | { | |
5ccfed9b | 2209 | /* Debugging sections have no csects. */ |
fd361982 | 2210 | if (bfd_section_flags (o) & SEC_DEBUGGING) |
07d6d2b8 | 2211 | continue; |
5ccfed9b | 2212 | |
252b5132 RH |
2213 | /* Reset the section size and the line number count, since the |
2214 | data is now attached to the csects. Don't reset the size of | |
2215 | the .debug section, since we need to read it below in | |
2216 | bfd_xcoff_size_dynamic_sections. */ | |
fd361982 | 2217 | if (strcmp (bfd_section_name (o), ".debug") != 0) |
eea6121a | 2218 | o->size = 0; |
252b5132 RH |
2219 | o->lineno_count = 0; |
2220 | ||
2221 | if ((o->flags & SEC_RELOC) != 0) | |
2222 | { | |
2223 | bfd_size_type i; | |
2224 | struct internal_reloc *rel; | |
2225 | asection **rel_csect; | |
2226 | ||
2227 | rel = reloc_info[o->target_index].relocs; | |
2228 | rel_csect = reloc_info[o->target_index].csects; | |
beb1bf64 | 2229 | |
252b5132 RH |
2230 | for (i = 0; i < o->reloc_count; i++, rel++, rel_csect++) |
2231 | { | |
2232 | if (*rel_csect == NULL) | |
2233 | { | |
4eca0228 | 2234 | _bfd_error_handler |
695344c0 | 2235 | /* xgettext:c-format */ |
2dcf00ce AM |
2236 | (_("%pB: reloc %s:%" PRId64 " not in csect"), |
2237 | abfd, o->name, (int64_t) i); | |
252b5132 RH |
2238 | bfd_set_error (bfd_error_bad_value); |
2239 | goto error_return; | |
2240 | } | |
2241 | ||
858ef0ce RS |
2242 | /* We identify all function symbols that are the target |
2243 | of a relocation, so that we can create glue code for | |
2244 | functions imported from dynamic objects. */ | |
07d6d2b8 | 2245 | if (info->output_bfd->xvec == abfd->xvec |
252b5132 | 2246 | && *rel_csect != bfd_und_section_ptr |
252b5132 RH |
2247 | && obj_xcoff_sym_hashes (abfd)[rel->r_symndx] != NULL) |
2248 | { | |
2249 | struct xcoff_link_hash_entry *h; | |
2250 | ||
2251 | h = obj_xcoff_sym_hashes (abfd)[rel->r_symndx]; | |
252b5132 | 2252 | /* If the symbol name starts with a period, it is |
b34976b6 AM |
2253 | the code of a function. If the symbol is |
2254 | currently undefined, then add an undefined symbol | |
2255 | for the function descriptor. This should do no | |
2256 | harm, because any regular object that defines the | |
2257 | function should also define the function | |
2258 | descriptor. It helps, because it means that we | |
2259 | will identify the function descriptor with a | |
2260 | dynamic object if a dynamic object defines it. */ | |
252b5132 RH |
2261 | if (h->root.root.string[0] == '.' |
2262 | && h->descriptor == NULL) | |
2263 | { | |
2264 | struct xcoff_link_hash_entry *hds; | |
14a793b2 | 2265 | struct bfd_link_hash_entry *bh; |
252b5132 RH |
2266 | |
2267 | hds = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
2268 | h->root.root.string + 1, | |
0a1b45a2 | 2269 | true, false, true); |
252b5132 RH |
2270 | if (hds == NULL) |
2271 | goto error_return; | |
2272 | if (hds->root.type == bfd_link_hash_new) | |
2273 | { | |
14a793b2 | 2274 | bh = &hds->root; |
252b5132 RH |
2275 | if (! (_bfd_generic_link_add_one_symbol |
2276 | (info, abfd, hds->root.root.string, | |
2277 | (flagword) 0, bfd_und_section_ptr, | |
0a1b45a2 AM |
2278 | (bfd_vma) 0, NULL, false, |
2279 | true, &bh))) | |
252b5132 | 2280 | goto error_return; |
14a793b2 | 2281 | hds = (struct xcoff_link_hash_entry *) bh; |
252b5132 RH |
2282 | } |
2283 | hds->flags |= XCOFF_DESCRIPTOR; | |
858ef0ce | 2284 | BFD_ASSERT ((h->flags & XCOFF_DESCRIPTOR) == 0); |
252b5132 RH |
2285 | hds->descriptor = h; |
2286 | h->descriptor = hds; | |
2287 | } | |
858ef0ce RS |
2288 | if (h->root.root.string[0] == '.') |
2289 | h->flags |= XCOFF_CALLED; | |
252b5132 RH |
2290 | } |
2291 | } | |
2292 | ||
2293 | free (reloc_info[o->target_index].csects); | |
2294 | reloc_info[o->target_index].csects = NULL; | |
2295 | ||
2296 | /* Reset SEC_RELOC and the reloc_count, since the reloc | |
2297 | information is now attached to the csects. */ | |
beb1bf64 | 2298 | o->flags &=~ SEC_RELOC; |
252b5132 RH |
2299 | o->reloc_count = 0; |
2300 | ||
2301 | /* If we are not keeping memory, free the reloc information. */ | |
2302 | if (! info->keep_memory | |
c920e5cc | 2303 | && coff_section_data (abfd, o) != NULL) |
252b5132 RH |
2304 | { |
2305 | free (coff_section_data (abfd, o)->relocs); | |
2306 | coff_section_data (abfd, o)->relocs = NULL; | |
2307 | } | |
2308 | } | |
2309 | ||
2310 | /* Free up the line numbers. FIXME: We could cache these | |
b34976b6 | 2311 | somewhere for the final link, to avoid reading them again. */ |
c9594989 AM |
2312 | free (reloc_info[o->target_index].linenos); |
2313 | reloc_info[o->target_index].linenos = NULL; | |
252b5132 RH |
2314 | } |
2315 | ||
2316 | free (reloc_info); | |
2317 | ||
2318 | obj_coff_keep_syms (abfd) = keep_syms; | |
2319 | ||
0a1b45a2 | 2320 | return true; |
252b5132 RH |
2321 | |
2322 | error_return: | |
2323 | if (reloc_info != NULL) | |
2324 | { | |
2325 | for (o = abfd->sections; o != NULL; o = o->next) | |
2326 | { | |
c9594989 AM |
2327 | free (reloc_info[o->target_index].csects); |
2328 | free (reloc_info[o->target_index].linenos); | |
252b5132 | 2329 | } |
dc810e39 | 2330 | free (reloc_info); |
252b5132 RH |
2331 | } |
2332 | obj_coff_keep_syms (abfd) = keep_syms; | |
0a1b45a2 | 2333 | return false; |
252b5132 RH |
2334 | } |
2335 | ||
2336 | #undef N_TMASK | |
2337 | #undef N_BTSHFT | |
2338 | ||
116c20d2 | 2339 | /* Add symbols from an XCOFF object file. */ |
252b5132 | 2340 | |
0a1b45a2 | 2341 | static bool |
116c20d2 | 2342 | xcoff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2343 | { |
116c20d2 | 2344 | if (! _bfd_coff_get_external_symbols (abfd)) |
0a1b45a2 | 2345 | return false; |
116c20d2 | 2346 | if (! xcoff_link_add_symbols (abfd, info)) |
0a1b45a2 | 2347 | return false; |
116c20d2 | 2348 | if (! info->keep_memory) |
252b5132 | 2349 | { |
116c20d2 | 2350 | if (! _bfd_coff_free_symbols (abfd)) |
0a1b45a2 | 2351 | return false; |
252b5132 | 2352 | } |
0a1b45a2 | 2353 | return true; |
116c20d2 | 2354 | } |
dc810e39 | 2355 | |
116c20d2 NC |
2356 | /* Look through the loader symbols to see if this dynamic object |
2357 | should be included in the link. The native linker uses the loader | |
2358 | symbols, not the normal symbol table, so we do too. */ | |
2359 | ||
0a1b45a2 | 2360 | static bool |
116c20d2 NC |
2361 | xcoff_link_check_dynamic_ar_symbols (bfd *abfd, |
2362 | struct bfd_link_info *info, | |
0a1b45a2 | 2363 | bool *pneeded, |
5d3236ee | 2364 | bfd **subsbfd) |
116c20d2 NC |
2365 | { |
2366 | asection *lsec; | |
2367 | bfd_byte *contents; | |
2368 | struct internal_ldhdr ldhdr; | |
2369 | const char *strings; | |
2370 | bfd_byte *elsym, *elsymend; | |
2371 | ||
0a1b45a2 | 2372 | *pneeded = false; |
252b5132 | 2373 | |
252b5132 | 2374 | lsec = bfd_get_section_by_name (abfd, ".loader"); |
81ff113f | 2375 | if (lsec == NULL || (lsec->flags & SEC_HAS_CONTENTS) == 0) |
116c20d2 | 2376 | /* There are no symbols, so don't try to include it. */ |
0a1b45a2 | 2377 | return true; |
beb1bf64 | 2378 | |
c920e5cc AM |
2379 | contents = xcoff_get_section_contents (abfd, lsec); |
2380 | if (!contents) | |
0a1b45a2 | 2381 | return false; |
252b5132 | 2382 | |
beb1bf64 TR |
2383 | bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); |
2384 | ||
2385 | strings = (char *) contents + ldhdr.l_stoff; | |
2386 | ||
116c20d2 | 2387 | elsym = contents + bfd_xcoff_loader_symbol_offset (abfd, &ldhdr); |
252b5132 | 2388 | |
116c20d2 NC |
2389 | elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz (abfd); |
2390 | for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz (abfd)) | |
252b5132 RH |
2391 | { |
2392 | struct internal_ldsym ldsym; | |
2393 | char nambuf[SYMNMLEN + 1]; | |
2394 | const char *name; | |
116c20d2 | 2395 | struct bfd_link_hash_entry *h; |
252b5132 | 2396 | |
beb1bf64 | 2397 | bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym); |
252b5132 RH |
2398 | |
2399 | /* We are only interested in exported symbols. */ | |
2400 | if ((ldsym.l_smtype & L_EXPORT) == 0) | |
2401 | continue; | |
2402 | ||
2403 | if (ldsym._l._l_l._l_zeroes == 0) | |
2404 | name = strings + ldsym._l._l_l._l_offset; | |
2405 | else | |
2406 | { | |
2407 | memcpy (nambuf, ldsym._l._l_name, SYMNMLEN); | |
2408 | nambuf[SYMNMLEN] = '\0'; | |
2409 | name = nambuf; | |
2410 | } | |
2411 | ||
0a1b45a2 | 2412 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); |
252b5132 | 2413 | |
116c20d2 NC |
2414 | /* We are only interested in symbols that are currently |
2415 | undefined. At this point we know that we are using an XCOFF | |
2416 | hash table. */ | |
2417 | if (h != NULL | |
2418 | && h->type == bfd_link_hash_undefined | |
2419 | && (((struct xcoff_link_hash_entry *) h)->flags | |
2420 | & XCOFF_DEF_DYNAMIC) == 0) | |
252b5132 | 2421 | { |
0e144ba7 AM |
2422 | if (!(*info->callbacks |
2423 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
b95a0a31 | 2424 | continue; |
0a1b45a2 AM |
2425 | *pneeded = true; |
2426 | return true; | |
252b5132 | 2427 | } |
116c20d2 | 2428 | } |
252b5132 | 2429 | |
c920e5cc AM |
2430 | /* We do not need this shared object's .loader section. */ |
2431 | free (contents); | |
2432 | coff_section_data (abfd, lsec)->contents = NULL; | |
252b5132 | 2433 | |
0a1b45a2 | 2434 | return true; |
116c20d2 | 2435 | } |
252b5132 | 2436 | |
116c20d2 NC |
2437 | /* Look through the symbols to see if this object file should be |
2438 | included in the link. */ | |
252b5132 | 2439 | |
0a1b45a2 | 2440 | static bool |
116c20d2 NC |
2441 | xcoff_link_check_ar_symbols (bfd *abfd, |
2442 | struct bfd_link_info *info, | |
0a1b45a2 | 2443 | bool *pneeded, |
5d3236ee | 2444 | bfd **subsbfd) |
116c20d2 NC |
2445 | { |
2446 | bfd_size_type symesz; | |
2447 | bfd_byte *esym; | |
2448 | bfd_byte *esym_end; | |
252b5132 | 2449 | |
0a1b45a2 | 2450 | *pneeded = false; |
252b5132 | 2451 | |
116c20d2 NC |
2452 | if ((abfd->flags & DYNAMIC) != 0 |
2453 | && ! info->static_link | |
f13a99db | 2454 | && info->output_bfd->xvec == abfd->xvec) |
5d3236ee | 2455 | return xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded, subsbfd); |
252b5132 | 2456 | |
116c20d2 NC |
2457 | symesz = bfd_coff_symesz (abfd); |
2458 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
2459 | esym_end = esym + obj_raw_syment_count (abfd) * symesz; | |
2460 | while (esym < esym_end) | |
2461 | { | |
2462 | struct internal_syment sym; | |
252b5132 | 2463 | |
116c20d2 | 2464 | bfd_coff_swap_sym_in (abfd, (void *) esym, (void *) &sym); |
d2f1139e | 2465 | esym += (sym.n_numaux + 1) * symesz; |
252b5132 | 2466 | |
8602d4fe | 2467 | if (EXTERN_SYM_P (sym.n_sclass) && sym.n_scnum != N_UNDEF) |
116c20d2 NC |
2468 | { |
2469 | const char *name; | |
2470 | char buf[SYMNMLEN + 1]; | |
2471 | struct bfd_link_hash_entry *h; | |
252b5132 | 2472 | |
116c20d2 NC |
2473 | /* This symbol is externally visible, and is defined by this |
2474 | object file. */ | |
2475 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
2476 | ||
2477 | if (name == NULL) | |
0a1b45a2 AM |
2478 | return false; |
2479 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); | |
116c20d2 NC |
2480 | |
2481 | /* We are only interested in symbols that are currently | |
2482 | undefined. If a symbol is currently known to be common, | |
2483 | XCOFF linkers do not bring in an object file which | |
2484 | defines it. We also don't bring in symbols to satisfy | |
2485 | undefined references in shared objects. */ | |
2486 | if (h != NULL | |
2487 | && h->type == bfd_link_hash_undefined | |
07d6d2b8 | 2488 | && (info->output_bfd->xvec != abfd->xvec |
116c20d2 NC |
2489 | || (((struct xcoff_link_hash_entry *) h)->flags |
2490 | & XCOFF_DEF_DYNAMIC) == 0)) | |
252b5132 | 2491 | { |
0e144ba7 AM |
2492 | if (!(*info->callbacks |
2493 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
b95a0a31 | 2494 | continue; |
0a1b45a2 AM |
2495 | *pneeded = true; |
2496 | return true; | |
252b5132 RH |
2497 | } |
2498 | } | |
252b5132 RH |
2499 | } |
2500 | ||
116c20d2 | 2501 | /* We do not need this object file. */ |
0a1b45a2 | 2502 | return true; |
116c20d2 | 2503 | } |
252b5132 | 2504 | |
116c20d2 NC |
2505 | /* Check a single archive element to see if we need to include it in |
2506 | the link. *PNEEDED is set according to whether this element is | |
2507 | needed in the link or not. This is called via | |
2508 | _bfd_generic_link_add_archive_symbols. */ | |
2509 | ||
0a1b45a2 | 2510 | static bool |
116c20d2 NC |
2511 | xcoff_link_check_archive_element (bfd *abfd, |
2512 | struct bfd_link_info *info, | |
13e570f8 AM |
2513 | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
2514 | const char *name ATTRIBUTE_UNUSED, | |
0a1b45a2 | 2515 | bool *pneeded) |
116c20d2 | 2516 | { |
0a1b45a2 | 2517 | bool keep_syms_p; |
0e144ba7 | 2518 | bfd *oldbfd; |
f95942a3 RS |
2519 | |
2520 | keep_syms_p = (obj_coff_external_syms (abfd) != NULL); | |
0e144ba7 | 2521 | if (!_bfd_coff_get_external_symbols (abfd)) |
0a1b45a2 | 2522 | return false; |
252b5132 | 2523 | |
0e144ba7 AM |
2524 | oldbfd = abfd; |
2525 | if (!xcoff_link_check_ar_symbols (abfd, info, pneeded, &abfd)) | |
0a1b45a2 | 2526 | return false; |
116c20d2 NC |
2527 | |
2528 | if (*pneeded) | |
252b5132 | 2529 | { |
5d3236ee DK |
2530 | /* Potentially, the add_archive_element hook may have set a |
2531 | substitute BFD for us. */ | |
0e144ba7 AM |
2532 | if (abfd != oldbfd) |
2533 | { | |
2534 | if (!keep_syms_p | |
2535 | && !_bfd_coff_free_symbols (oldbfd)) | |
0a1b45a2 | 2536 | return false; |
0e144ba7 AM |
2537 | keep_syms_p = (obj_coff_external_syms (abfd) != NULL); |
2538 | if (!_bfd_coff_get_external_symbols (abfd)) | |
0a1b45a2 | 2539 | return false; |
0e144ba7 AM |
2540 | } |
2541 | if (!xcoff_link_add_symbols (abfd, info)) | |
0a1b45a2 | 2542 | return false; |
f95942a3 | 2543 | if (info->keep_memory) |
0a1b45a2 | 2544 | keep_syms_p = true; |
252b5132 | 2545 | } |
116c20d2 | 2546 | |
f95942a3 | 2547 | if (!keep_syms_p) |
252b5132 | 2548 | { |
0e144ba7 | 2549 | if (!_bfd_coff_free_symbols (abfd)) |
0a1b45a2 | 2550 | return false; |
252b5132 | 2551 | } |
252b5132 | 2552 | |
0a1b45a2 | 2553 | return true; |
116c20d2 | 2554 | } |
252b5132 | 2555 | |
116c20d2 NC |
2556 | /* Given an XCOFF BFD, add symbols to the global hash table as |
2557 | appropriate. */ | |
252b5132 | 2558 | |
0a1b45a2 | 2559 | bool |
116c20d2 NC |
2560 | _bfd_xcoff_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
2561 | { | |
2562 | switch (bfd_get_format (abfd)) | |
2563 | { | |
2564 | case bfd_object: | |
2565 | return xcoff_link_add_object_symbols (abfd, info); | |
2566 | ||
2567 | case bfd_archive: | |
2568 | /* If the archive has a map, do the usual search. We then need | |
2569 | to check the archive for dynamic objects, because they may not | |
2570 | appear in the archive map even though they should, perhaps, be | |
2571 | included. If the archive has no map, we just consider each object | |
2572 | file in turn, since that apparently is what the AIX native linker | |
2573 | does. */ | |
2574 | if (bfd_has_map (abfd)) | |
2575 | { | |
2576 | if (! (_bfd_generic_link_add_archive_symbols | |
2577 | (abfd, info, xcoff_link_check_archive_element))) | |
0a1b45a2 | 2578 | return false; |
116c20d2 NC |
2579 | } |
2580 | ||
2581 | { | |
2582 | bfd *member; | |
2583 | ||
2584 | member = bfd_openr_next_archived_file (abfd, NULL); | |
2585 | while (member != NULL) | |
2586 | { | |
2587 | if (bfd_check_format (member, bfd_object) | |
f13a99db | 2588 | && (info->output_bfd->xvec == member->xvec) |
116c20d2 NC |
2589 | && (! bfd_has_map (abfd) || (member->flags & DYNAMIC) != 0)) |
2590 | { | |
0a1b45a2 | 2591 | bool needed; |
116c20d2 NC |
2592 | |
2593 | if (! xcoff_link_check_archive_element (member, info, | |
13e570f8 | 2594 | NULL, NULL, &needed)) |
0a1b45a2 | 2595 | return false; |
116c20d2 NC |
2596 | if (needed) |
2597 | member->archive_pass = -1; | |
2598 | } | |
2599 | member = bfd_openr_next_archived_file (abfd, member); | |
2600 | } | |
2601 | } | |
2602 | ||
0a1b45a2 | 2603 | return true; |
116c20d2 NC |
2604 | |
2605 | default: | |
2606 | bfd_set_error (bfd_error_wrong_format); | |
0a1b45a2 | 2607 | return false; |
116c20d2 | 2608 | } |
252b5132 RH |
2609 | } |
2610 | \f | |
0a1b45a2 | 2611 | bool |
3023e3f6 RS |
2612 | _bfd_xcoff_define_common_symbol (bfd *output_bfd ATTRIBUTE_UNUSED, |
2613 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2614 | struct bfd_link_hash_entry *harg) | |
2615 | { | |
2616 | struct xcoff_link_hash_entry *h; | |
2617 | ||
2618 | if (!bfd_generic_define_common_symbol (output_bfd, info, harg)) | |
0a1b45a2 | 2619 | return false; |
3023e3f6 RS |
2620 | |
2621 | h = (struct xcoff_link_hash_entry *) harg; | |
2622 | h->flags |= XCOFF_DEF_REGULAR; | |
0a1b45a2 | 2623 | return true; |
3023e3f6 RS |
2624 | } |
2625 | \f | |
858ef0ce RS |
2626 | /* If symbol H has not been interpreted as a function descriptor, |
2627 | see whether it should be. Set up its descriptor information if so. */ | |
2628 | ||
0a1b45a2 | 2629 | static bool |
858ef0ce RS |
2630 | xcoff_find_function (struct bfd_link_info *info, |
2631 | struct xcoff_link_hash_entry *h) | |
2632 | { | |
2633 | if ((h->flags & XCOFF_DESCRIPTOR) == 0 | |
2634 | && h->root.root.string[0] != '.') | |
2635 | { | |
2636 | char *fnname; | |
2637 | struct xcoff_link_hash_entry *hfn; | |
986f0783 | 2638 | size_t amt; |
858ef0ce RS |
2639 | |
2640 | amt = strlen (h->root.root.string) + 2; | |
2641 | fnname = bfd_malloc (amt); | |
2642 | if (fnname == NULL) | |
0a1b45a2 | 2643 | return false; |
858ef0ce RS |
2644 | fnname[0] = '.'; |
2645 | strcpy (fnname + 1, h->root.root.string); | |
2646 | hfn = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
0a1b45a2 | 2647 | fnname, false, false, true); |
858ef0ce RS |
2648 | free (fnname); |
2649 | if (hfn != NULL | |
2650 | && hfn->smclas == XMC_PR | |
2651 | && (hfn->root.type == bfd_link_hash_defined | |
2652 | || hfn->root.type == bfd_link_hash_defweak)) | |
2653 | { | |
2654 | h->flags |= XCOFF_DESCRIPTOR; | |
2655 | h->descriptor = hfn; | |
2656 | hfn->descriptor = h; | |
2657 | } | |
2658 | } | |
0a1b45a2 | 2659 | return true; |
858ef0ce | 2660 | } |
858ef0ce | 2661 | \f |
b64232cc RS |
2662 | /* Return true if the given bfd contains at least one shared object. */ |
2663 | ||
0a1b45a2 | 2664 | static bool |
ee698300 RS |
2665 | xcoff_archive_contains_shared_object_p (struct bfd_link_info *info, |
2666 | bfd *archive) | |
b64232cc | 2667 | { |
ee698300 | 2668 | struct xcoff_archive_info *archive_info; |
b64232cc RS |
2669 | bfd *member; |
2670 | ||
ee698300 RS |
2671 | archive_info = xcoff_get_archive_info (info, archive); |
2672 | if (!archive_info->know_contains_shared_object_p) | |
2673 | { | |
2674 | member = bfd_openr_next_archived_file (archive, NULL); | |
2675 | while (member != NULL && (member->flags & DYNAMIC) == 0) | |
2676 | member = bfd_openr_next_archived_file (archive, member); | |
2677 | ||
2678 | archive_info->contains_shared_object_p = (member != NULL); | |
2679 | archive_info->know_contains_shared_object_p = 1; | |
2680 | } | |
2681 | return archive_info->contains_shared_object_p; | |
b64232cc RS |
2682 | } |
2683 | ||
2684 | /* Symbol H qualifies for export by -bexpfull. Return true if it also | |
2685 | qualifies for export by -bexpall. */ | |
2686 | ||
0a1b45a2 | 2687 | static bool |
b64232cc RS |
2688 | xcoff_covered_by_expall_p (struct xcoff_link_hash_entry *h) |
2689 | { | |
2690 | /* Exclude symbols beginning with '_'. */ | |
2691 | if (h->root.root.string[0] == '_') | |
0a1b45a2 | 2692 | return false; |
b64232cc RS |
2693 | |
2694 | /* Exclude archive members that would otherwise be unreferenced. */ | |
2695 | if ((h->flags & XCOFF_MARK) == 0 | |
2696 | && (h->root.type == bfd_link_hash_defined | |
2697 | || h->root.type == bfd_link_hash_defweak) | |
2698 | && h->root.u.def.section->owner != NULL | |
2699 | && h->root.u.def.section->owner->my_archive != NULL) | |
0a1b45a2 | 2700 | return false; |
b64232cc | 2701 | |
0a1b45a2 | 2702 | return true; |
b64232cc RS |
2703 | } |
2704 | ||
2705 | /* Return true if symbol H qualifies for the forms of automatic export | |
2706 | specified by AUTO_EXPORT_FLAGS. */ | |
2707 | ||
0a1b45a2 | 2708 | static bool |
ee698300 RS |
2709 | xcoff_auto_export_p (struct bfd_link_info *info, |
2710 | struct xcoff_link_hash_entry *h, | |
b64232cc RS |
2711 | unsigned int auto_export_flags) |
2712 | { | |
2713 | /* Don't automatically export things that were explicitly exported. */ | |
2714 | if ((h->flags & XCOFF_EXPORT) != 0) | |
0a1b45a2 | 2715 | return false; |
b64232cc RS |
2716 | |
2717 | /* Don't export things that we don't define. */ | |
2718 | if ((h->flags & XCOFF_DEF_REGULAR) == 0) | |
0a1b45a2 | 2719 | return false; |
b64232cc RS |
2720 | |
2721 | /* Don't export functions; export their descriptors instead. */ | |
2722 | if (h->root.root.string[0] == '.') | |
0a1b45a2 | 2723 | return false; |
b64232cc | 2724 | |
a8bc481f CC |
2725 | /* Don't export hidden or internal symbols. */ |
2726 | if (h->visibility == SYM_V_HIDDEN | |
2727 | || h->visibility == SYM_V_INTERNAL) | |
2728 | return false; | |
2729 | ||
b64232cc RS |
2730 | /* We don't export a symbol which is being defined by an object |
2731 | included from an archive which contains a shared object. The | |
2732 | rationale is that if an archive contains both an unshared and | |
2733 | a shared object, then there must be some reason that the | |
2734 | unshared object is unshared, and we don't want to start | |
2735 | providing a shared version of it. In particular, this solves | |
2736 | a bug involving the _savefNN set of functions. gcc will call | |
2737 | those functions without providing a slot to restore the TOC, | |
2738 | so it is essential that these functions be linked in directly | |
2739 | and not from a shared object, which means that a shared | |
2740 | object which also happens to link them in must not export | |
2741 | them. This is confusing, but I haven't been able to think of | |
2742 | a different approach. Note that the symbols can, of course, | |
2743 | be exported explicitly. */ | |
2744 | if (h->root.type == bfd_link_hash_defined | |
2745 | || h->root.type == bfd_link_hash_defweak) | |
2746 | { | |
2747 | bfd *owner; | |
2748 | ||
2749 | owner = h->root.u.def.section->owner; | |
2750 | if (owner != NULL | |
2751 | && owner->my_archive != NULL | |
ee698300 | 2752 | && xcoff_archive_contains_shared_object_p (info, owner->my_archive)) |
0a1b45a2 | 2753 | return false; |
b64232cc RS |
2754 | } |
2755 | ||
2756 | /* Otherwise, all symbols are exported by -bexpfull. */ | |
2757 | if ((auto_export_flags & XCOFF_EXPFULL) != 0) | |
0a1b45a2 | 2758 | return true; |
b64232cc RS |
2759 | |
2760 | /* Despite its name, -bexpall exports most but not all symbols. */ | |
2761 | if ((auto_export_flags & XCOFF_EXPALL) != 0 | |
2762 | && xcoff_covered_by_expall_p (h)) | |
0a1b45a2 | 2763 | return true; |
b64232cc | 2764 | |
0a1b45a2 | 2765 | return false; |
b64232cc RS |
2766 | } |
2767 | \f | |
b3d1832c RS |
2768 | /* Return true if relocation REL needs to be copied to the .loader section. |
2769 | If REL is against a global symbol, H is that symbol, otherwise it | |
2770 | is null. */ | |
2771 | ||
0a1b45a2 | 2772 | static bool |
b3d1832c | 2773 | xcoff_need_ldrel_p (struct bfd_link_info *info, struct internal_reloc *rel, |
c5df7e44 | 2774 | struct xcoff_link_hash_entry *h, asection *ssec) |
b3d1832c RS |
2775 | { |
2776 | if (!xcoff_hash_table (info)->loader_section) | |
0a1b45a2 | 2777 | return false; |
b3d1832c RS |
2778 | |
2779 | switch (rel->r_type) | |
2780 | { | |
2781 | case R_TOC: | |
2782 | case R_GL: | |
2783 | case R_TCL: | |
2784 | case R_TRL: | |
2785 | case R_TRLA: | |
2786 | /* We should never need a .loader reloc for a TOC-relative reloc. */ | |
0a1b45a2 | 2787 | return false; |
b3d1832c RS |
2788 | |
2789 | default: | |
2790 | /* In this case, relocations against defined symbols can be resolved | |
2791 | statically. */ | |
2792 | if (h == NULL | |
2793 | || h->root.type == bfd_link_hash_defined | |
2794 | || h->root.type == bfd_link_hash_defweak | |
2795 | || h->root.type == bfd_link_hash_common) | |
0a1b45a2 | 2796 | return false; |
b3d1832c RS |
2797 | |
2798 | /* We will always provide a local definition of function symbols, | |
2799 | even if we don't have one yet. */ | |
2800 | if ((h->flags & XCOFF_CALLED) != 0) | |
0a1b45a2 | 2801 | return false; |
b3d1832c | 2802 | |
0a1b45a2 | 2803 | return true; |
b3d1832c RS |
2804 | |
2805 | case R_POS: | |
2806 | case R_NEG: | |
2807 | case R_RL: | |
2808 | case R_RLA: | |
2809 | /* Absolute relocations against absolute symbols can be | |
2810 | resolved statically. */ | |
93fd13c7 AM |
2811 | if (h != NULL |
2812 | && (h->root.type == bfd_link_hash_defined | |
2813 | || h->root.type == bfd_link_hash_defweak) | |
2814 | && !h->root.rel_from_abs) | |
2815 | { | |
2816 | asection *sec = h->root.u.def.section; | |
2817 | if (bfd_is_abs_section (sec) | |
2818 | || (sec != NULL | |
2819 | && bfd_is_abs_section (sec->output_section))) | |
0a1b45a2 | 2820 | return false; |
93fd13c7 | 2821 | } |
c5df7e44 CC |
2822 | |
2823 | /* Absolute relocations from read-only sections are forbidden | |
2824 | by AIX loader. However, they can appear in their section's | |
2825 | relocations. */ | |
2826 | if (ssec != NULL | |
2827 | && (ssec->output_section->flags & SEC_READONLY) != 0) | |
2828 | return false; | |
2829 | ||
0a1b45a2 | 2830 | return true; |
1b2cb8e2 CC |
2831 | |
2832 | case R_TLS: | |
2833 | case R_TLS_LE: | |
2834 | case R_TLS_IE: | |
2835 | case R_TLS_LD: | |
2836 | case R_TLSM: | |
2837 | case R_TLSML: | |
0a1b45a2 | 2838 | return true; |
b3d1832c RS |
2839 | } |
2840 | } | |
2841 | \f | |
252b5132 RH |
2842 | /* Mark a symbol as not being garbage, including the section in which |
2843 | it is defined. */ | |
2844 | ||
0a1b45a2 | 2845 | static inline bool |
116c20d2 | 2846 | xcoff_mark_symbol (struct bfd_link_info *info, struct xcoff_link_hash_entry *h) |
252b5132 RH |
2847 | { |
2848 | if ((h->flags & XCOFF_MARK) != 0) | |
0a1b45a2 | 2849 | return true; |
252b5132 RH |
2850 | |
2851 | h->flags |= XCOFF_MARK; | |
858ef0ce RS |
2852 | |
2853 | /* If we're marking an undefined symbol, try find some way of | |
2854 | defining it. */ | |
0e1862bb | 2855 | if (!bfd_link_relocatable (info) |
858ef0ce RS |
2856 | && (h->flags & XCOFF_IMPORT) == 0 |
2857 | && (h->flags & XCOFF_DEF_REGULAR) == 0 | |
2858 | && (h->root.type == bfd_link_hash_undefined | |
2859 | || h->root.type == bfd_link_hash_undefweak)) | |
2860 | { | |
2861 | /* First check whether this symbol can be interpreted as an | |
2862 | undefined function descriptor for a defined function symbol. */ | |
2863 | if (!xcoff_find_function (info, h)) | |
0a1b45a2 | 2864 | return false; |
858ef0ce RS |
2865 | |
2866 | if ((h->flags & XCOFF_DESCRIPTOR) != 0 | |
2867 | && (h->descriptor->root.type == bfd_link_hash_defined | |
2868 | || h->descriptor->root.type == bfd_link_hash_defweak)) | |
2869 | { | |
2870 | /* This is a descriptor for a defined symbol, but the input | |
2871 | objects have not defined the descriptor itself. Fill in | |
2872 | the definition automatically. | |
2873 | ||
2874 | Note that we do this even if we found a dynamic definition | |
2875 | of H. The local function definition logically overrides | |
2876 | the dynamic one. */ | |
2877 | asection *sec; | |
2878 | ||
2879 | sec = xcoff_hash_table (info)->descriptor_section; | |
2880 | h->root.type = bfd_link_hash_defined; | |
2881 | h->root.u.def.section = sec; | |
2882 | h->root.u.def.value = sec->size; | |
2883 | h->smclas = XMC_DS; | |
2884 | h->flags |= XCOFF_DEF_REGULAR; | |
2885 | ||
2886 | /* The size of the function descriptor depends on whether this | |
2887 | is xcoff32 (12) or xcoff64 (24). */ | |
2888 | sec->size += bfd_xcoff_function_descriptor_size (sec->owner); | |
2889 | ||
2890 | /* A function descriptor uses two relocs: one for the | |
2891 | associated code, and one for the TOC address. */ | |
1876a542 | 2892 | xcoff_hash_table (info)->ldinfo.ldrel_count += 2; |
858ef0ce RS |
2893 | sec->reloc_count += 2; |
2894 | ||
2895 | /* Mark the function itself. */ | |
2896 | if (!xcoff_mark_symbol (info, h->descriptor)) | |
0a1b45a2 | 2897 | return false; |
858ef0ce | 2898 | |
47dfb2ca RS |
2899 | /* Mark the TOC section, so that we get an anchor |
2900 | to relocate against. */ | |
2901 | if (!xcoff_mark (info, xcoff_hash_table (info)->toc_section)) | |
0a1b45a2 | 2902 | return false; |
47dfb2ca | 2903 | |
858ef0ce RS |
2904 | /* We handle writing out the contents of the descriptor in |
2905 | xcoff_write_global_symbol. */ | |
2906 | } | |
94313f36 RS |
2907 | else if (info->static_link) |
2908 | /* We can't get a symbol value dynamically, so just assume | |
2909 | that it's undefined. */ | |
2910 | h->flags |= XCOFF_WAS_UNDEFINED; | |
858ef0ce RS |
2911 | else if ((h->flags & XCOFF_CALLED) != 0) |
2912 | { | |
2913 | /* This is a function symbol for which we need to create | |
2914 | linkage code. */ | |
2915 | asection *sec; | |
2916 | struct xcoff_link_hash_entry *hds; | |
2917 | ||
2918 | /* Mark the descriptor (and its TOC section). */ | |
2919 | hds = h->descriptor; | |
2920 | BFD_ASSERT ((hds->root.type == bfd_link_hash_undefined | |
2921 | || hds->root.type == bfd_link_hash_undefweak) | |
2922 | && (hds->flags & XCOFF_DEF_REGULAR) == 0); | |
2923 | if (!xcoff_mark_symbol (info, hds)) | |
0a1b45a2 | 2924 | return false; |
858ef0ce RS |
2925 | |
2926 | /* Treat this symbol as undefined if the descriptor was. */ | |
2927 | if ((hds->flags & XCOFF_WAS_UNDEFINED) != 0) | |
2928 | h->flags |= XCOFF_WAS_UNDEFINED; | |
2929 | ||
2930 | /* Allocate room for the global linkage code itself. */ | |
2931 | sec = xcoff_hash_table (info)->linkage_section; | |
2932 | h->root.type = bfd_link_hash_defined; | |
2933 | h->root.u.def.section = sec; | |
2934 | h->root.u.def.value = sec->size; | |
2935 | h->smclas = XMC_GL; | |
2936 | h->flags |= XCOFF_DEF_REGULAR; | |
2937 | sec->size += bfd_xcoff_glink_code_size (info->output_bfd); | |
2938 | ||
2939 | /* The global linkage code requires a TOC entry for the | |
2940 | descriptor. */ | |
2941 | if (hds->toc_section == NULL) | |
2942 | { | |
2943 | int byte_size; | |
2944 | ||
2945 | /* 32 vs 64 | |
2946 | xcoff32 uses 4 bytes in the toc. | |
2947 | xcoff64 uses 8 bytes in the toc. */ | |
2948 | if (bfd_xcoff_is_xcoff64 (info->output_bfd)) | |
2949 | byte_size = 8; | |
2950 | else if (bfd_xcoff_is_xcoff32 (info->output_bfd)) | |
2951 | byte_size = 4; | |
2952 | else | |
0a1b45a2 | 2953 | return false; |
858ef0ce RS |
2954 | |
2955 | /* Allocate room in the fallback TOC section. */ | |
2956 | hds->toc_section = xcoff_hash_table (info)->toc_section; | |
2957 | hds->u.toc_offset = hds->toc_section->size; | |
2958 | hds->toc_section->size += byte_size; | |
2959 | if (!xcoff_mark (info, hds->toc_section)) | |
0a1b45a2 | 2960 | return false; |
858ef0ce RS |
2961 | |
2962 | /* Allocate room for a static and dynamic R_TOC | |
2963 | relocation. */ | |
1876a542 | 2964 | ++xcoff_hash_table (info)->ldinfo.ldrel_count; |
858ef0ce RS |
2965 | ++hds->toc_section->reloc_count; |
2966 | ||
2967 | /* Set the index to -2 to force this symbol to | |
2968 | get written out. */ | |
2969 | hds->indx = -2; | |
2970 | hds->flags |= XCOFF_SET_TOC | XCOFF_LDREL; | |
2971 | } | |
2972 | } | |
2973 | else if ((h->flags & XCOFF_DEF_DYNAMIC) == 0) | |
2974 | { | |
2975 | /* Record that the symbol was undefined, then import it. | |
2976 | -brtl links use a special fake import file. */ | |
2977 | h->flags |= XCOFF_WAS_UNDEFINED | XCOFF_IMPORT; | |
2978 | if (xcoff_hash_table (info)->rtld) | |
2979 | { | |
2980 | if (!xcoff_set_import_path (info, h, "", "..", "")) | |
0a1b45a2 | 2981 | return false; |
858ef0ce RS |
2982 | } |
2983 | else | |
2984 | { | |
2985 | if (!xcoff_set_import_path (info, h, NULL, NULL, NULL)) | |
0a1b45a2 | 2986 | return false; |
858ef0ce RS |
2987 | } |
2988 | } | |
2989 | } | |
2990 | ||
252b5132 RH |
2991 | if (h->root.type == bfd_link_hash_defined |
2992 | || h->root.type == bfd_link_hash_defweak) | |
2993 | { | |
2994 | asection *hsec; | |
2995 | ||
2996 | hsec = h->root.u.def.section; | |
2997 | if (! bfd_is_abs_section (hsec) | |
8ba4f8f6 | 2998 | && hsec->gc_mark == 0) |
252b5132 RH |
2999 | { |
3000 | if (! xcoff_mark (info, hsec)) | |
0a1b45a2 | 3001 | return false; |
252b5132 RH |
3002 | } |
3003 | } | |
3004 | ||
3005 | if (h->toc_section != NULL | |
8ba4f8f6 | 3006 | && h->toc_section->gc_mark == 0) |
252b5132 RH |
3007 | { |
3008 | if (! xcoff_mark (info, h->toc_section)) | |
0a1b45a2 | 3009 | return false; |
252b5132 RH |
3010 | } |
3011 | ||
0a1b45a2 | 3012 | return true; |
252b5132 RH |
3013 | } |
3014 | ||
7d504122 RS |
3015 | /* Look for a symbol called NAME. If the symbol is defined, mark it. |
3016 | If the symbol exists, set FLAGS. */ | |
3017 | ||
0a1b45a2 | 3018 | static bool |
7d504122 RS |
3019 | xcoff_mark_symbol_by_name (struct bfd_link_info *info, |
3020 | const char *name, unsigned int flags) | |
3021 | { | |
3022 | struct xcoff_link_hash_entry *h; | |
3023 | ||
3024 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, | |
0a1b45a2 | 3025 | false, false, true); |
7d504122 RS |
3026 | if (h != NULL) |
3027 | { | |
3028 | h->flags |= flags; | |
3029 | if (h->root.type == bfd_link_hash_defined | |
3030 | || h->root.type == bfd_link_hash_defweak) | |
3031 | { | |
3032 | if (!xcoff_mark (info, h->root.u.def.section)) | |
0a1b45a2 | 3033 | return false; |
7d504122 RS |
3034 | } |
3035 | } | |
0a1b45a2 | 3036 | return true; |
7d504122 RS |
3037 | } |
3038 | ||
252b5132 RH |
3039 | /* The mark phase of garbage collection. For a given section, mark |
3040 | it, and all the sections which define symbols to which it refers. | |
3041 | Because this function needs to look at the relocs, we also count | |
3042 | the number of relocs which need to be copied into the .loader | |
3043 | section. */ | |
3044 | ||
0a1b45a2 | 3045 | static bool |
116c20d2 | 3046 | xcoff_mark (struct bfd_link_info *info, asection *sec) |
252b5132 | 3047 | { |
23f5e55e | 3048 | if (bfd_is_const_section (sec) |
8ba4f8f6 CC |
3049 | || sec->gc_mark != 0) |
3050 | return true; | |
3051 | ||
3052 | sec->gc_mark = 1; | |
3053 | ||
3054 | if (sec->owner->xvec != info->output_bfd->xvec) | |
3055 | return true; | |
3056 | ||
3057 | if (coff_section_data (sec->owner, sec) == NULL) | |
0a1b45a2 | 3058 | return true; |
252b5132 | 3059 | |
252b5132 | 3060 | |
8ba4f8f6 | 3061 | if (xcoff_section_data (sec->owner, sec) != NULL) |
252b5132 | 3062 | { |
4cc02a02 | 3063 | struct xcoff_link_hash_entry **syms; |
4cc02a02 RS |
3064 | asection **csects; |
3065 | unsigned long i, first, last; | |
252b5132 RH |
3066 | |
3067 | /* Mark all the symbols in this section. */ | |
4cc02a02 RS |
3068 | syms = obj_xcoff_sym_hashes (sec->owner); |
3069 | csects = xcoff_data (sec->owner)->csects; | |
3070 | first = xcoff_section_data (sec->owner, sec)->first_symndx; | |
3071 | last = xcoff_section_data (sec->owner, sec)->last_symndx; | |
3072 | for (i = first; i <= last; i++) | |
3073 | if (csects[i] == sec | |
3074 | && syms[i] != NULL | |
3075 | && (syms[i]->flags & XCOFF_MARK) == 0) | |
3076 | { | |
3077 | if (!xcoff_mark_symbol (info, syms[i])) | |
0a1b45a2 | 3078 | return false; |
4cc02a02 | 3079 | } |
8ba4f8f6 CC |
3080 | } |
3081 | ||
3082 | /* Look through the section relocs. */ | |
3083 | if ((sec->flags & SEC_RELOC) != 0 | |
3084 | && sec->reloc_count > 0) | |
3085 | { | |
3086 | struct internal_reloc *rel, *relend; | |
252b5132 | 3087 | |
8ba4f8f6 CC |
3088 | rel = xcoff_read_internal_relocs (sec->owner, sec, true, |
3089 | NULL, false, NULL); | |
3090 | if (rel == NULL) | |
3091 | return false; | |
3092 | relend = rel + sec->reloc_count; | |
3093 | for (; rel < relend; rel++) | |
252b5132 | 3094 | { |
8ba4f8f6 | 3095 | struct xcoff_link_hash_entry *h; |
252b5132 | 3096 | |
8ba4f8f6 CC |
3097 | if ((unsigned int) rel->r_symndx |
3098 | > obj_raw_syment_count (sec->owner)) | |
3099 | continue; | |
252b5132 | 3100 | |
8ba4f8f6 CC |
3101 | h = obj_xcoff_sym_hashes (sec->owner)[rel->r_symndx]; |
3102 | if (h != NULL) | |
3103 | { | |
3104 | if ((h->flags & XCOFF_MARK) == 0) | |
252b5132 | 3105 | { |
8ba4f8f6 CC |
3106 | if (!xcoff_mark_symbol (info, h)) |
3107 | return false; | |
252b5132 | 3108 | } |
8ba4f8f6 CC |
3109 | } |
3110 | else | |
3111 | { | |
3112 | asection *rsec; | |
252b5132 | 3113 | |
8ba4f8f6 CC |
3114 | rsec = xcoff_data (sec->owner)->csects[rel->r_symndx]; |
3115 | if (rsec != NULL | |
3116 | && rsec->gc_mark == 0) | |
252b5132 | 3117 | { |
8ba4f8f6 CC |
3118 | if (!xcoff_mark (info, rsec)) |
3119 | return false; | |
252b5132 RH |
3120 | } |
3121 | } | |
3122 | ||
8ba4f8f6 CC |
3123 | /* See if this reloc needs to be copied into the .loader |
3124 | section. */ | |
3125 | if ((sec->flags & SEC_DEBUGGING) == 0 | |
3126 | && xcoff_need_ldrel_p (info, rel, h, sec)) | |
252b5132 | 3127 | { |
1876a542 | 3128 | ++xcoff_hash_table (info)->ldinfo.ldrel_count; |
8ba4f8f6 CC |
3129 | if (h != NULL) |
3130 | h->flags |= XCOFF_LDREL; | |
252b5132 RH |
3131 | } |
3132 | } | |
8ba4f8f6 CC |
3133 | |
3134 | if (! info->keep_memory | |
c920e5cc | 3135 | && coff_section_data (sec->owner, sec) != NULL) |
8ba4f8f6 CC |
3136 | { |
3137 | free (coff_section_data (sec->owner, sec)->relocs); | |
3138 | coff_section_data (sec->owner, sec)->relocs = NULL; | |
3139 | } | |
252b5132 RH |
3140 | } |
3141 | ||
0a1b45a2 | 3142 | return true; |
252b5132 RH |
3143 | } |
3144 | ||
116c20d2 NC |
3145 | /* Routines that are called after all the input files have been |
3146 | handled, but before the sections are laid out in memory. */ | |
3147 | ||
252b5132 RH |
3148 | /* The sweep phase of garbage collection. Remove all garbage |
3149 | sections. */ | |
3150 | ||
3151 | static void | |
116c20d2 | 3152 | xcoff_sweep (struct bfd_link_info *info) |
252b5132 RH |
3153 | { |
3154 | bfd *sub; | |
3155 | ||
c72f2fb2 | 3156 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
252b5132 RH |
3157 | { |
3158 | asection *o; | |
8ba4f8f6 CC |
3159 | bool some_kept = false; |
3160 | ||
3161 | /* As says below keep all sections from non-XCOFF | |
3162 | input files. */ | |
3163 | if (sub->xvec != info->output_bfd->xvec) | |
3164 | some_kept = true; | |
3165 | else | |
3166 | { | |
3167 | /* See whether any section is already marked. */ | |
3168 | for (o = sub->sections; o != NULL; o = o->next) | |
3169 | if (o->gc_mark) | |
3170 | some_kept = true; | |
3171 | } | |
252b5132 | 3172 | |
8ba4f8f6 CC |
3173 | /* If no section in this file will be kept, then we can |
3174 | toss out debug sections. */ | |
3175 | if (!some_kept) | |
3176 | { | |
3177 | for (o = sub->sections; o != NULL; o = o->next) | |
3178 | { | |
3179 | o->size = 0; | |
3180 | o->reloc_count = 0; | |
3181 | } | |
3182 | continue; | |
3183 | } | |
3184 | ||
3185 | /* Keep all sections from non-XCOFF input files. Keep | |
3186 | special sections. Keep .debug sections for the | |
3187 | moment. */ | |
252b5132 RH |
3188 | for (o = sub->sections; o != NULL; o = o->next) |
3189 | { | |
8ba4f8f6 CC |
3190 | if (o->gc_mark == 1) |
3191 | continue; | |
3192 | ||
3193 | if (sub->xvec != info->output_bfd->xvec | |
3194 | || o == xcoff_hash_table (info)->debug_section | |
3195 | || o == xcoff_hash_table (info)->loader_section | |
3196 | || o == xcoff_hash_table (info)->linkage_section | |
3197 | || o == xcoff_hash_table (info)->descriptor_section | |
3198 | || (bfd_section_flags (o) & SEC_DEBUGGING) | |
3199 | || strcmp (o->name, ".debug") == 0) | |
3200 | xcoff_mark (info, o); | |
3201 | else | |
252b5132 | 3202 | { |
8ba4f8f6 CC |
3203 | o->size = 0; |
3204 | o->reloc_count = 0; | |
252b5132 RH |
3205 | } |
3206 | } | |
3207 | } | |
3208 | } | |
3209 | ||
2d23f965 CC |
3210 | /* Initialize the back-end with linker infos. */ |
3211 | ||
3212 | bool | |
3213 | bfd_xcoff_link_init (struct bfd_link_info *info, | |
3214 | struct bfd_xcoff_link_params *params) | |
3215 | { | |
3216 | xcoff_hash_table (info)->params = params; | |
3217 | ||
3218 | return true; | |
3219 | } | |
3220 | ||
252b5132 RH |
3221 | /* Record the number of elements in a set. This is used to output the |
3222 | correct csect length. */ | |
3223 | ||
0a1b45a2 | 3224 | bool |
116c20d2 NC |
3225 | bfd_xcoff_link_record_set (bfd *output_bfd, |
3226 | struct bfd_link_info *info, | |
3227 | struct bfd_link_hash_entry *harg, | |
3228 | bfd_size_type size) | |
252b5132 RH |
3229 | { |
3230 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; | |
3231 | struct xcoff_link_size_list *n; | |
986f0783 | 3232 | size_t amt; |
252b5132 | 3233 | |
9bd09e22 | 3234 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
0a1b45a2 | 3235 | return true; |
252b5132 RH |
3236 | |
3237 | /* This will hardly ever be called. I don't want to burn four bytes | |
3238 | per global symbol, so instead the size is kept on a linked list | |
3239 | attached to the hash table. */ | |
116c20d2 NC |
3240 | amt = sizeof (* n); |
3241 | n = bfd_alloc (output_bfd, amt); | |
252b5132 | 3242 | if (n == NULL) |
0a1b45a2 | 3243 | return false; |
252b5132 RH |
3244 | n->next = xcoff_hash_table (info)->size_list; |
3245 | n->h = h; | |
3246 | n->size = size; | |
3247 | xcoff_hash_table (info)->size_list = n; | |
3248 | ||
3249 | h->flags |= XCOFF_HAS_SIZE; | |
3250 | ||
0a1b45a2 | 3251 | return true; |
252b5132 RH |
3252 | } |
3253 | ||
3254 | /* Import a symbol. */ | |
3255 | ||
0a1b45a2 | 3256 | bool |
116c20d2 NC |
3257 | bfd_xcoff_import_symbol (bfd *output_bfd, |
3258 | struct bfd_link_info *info, | |
3259 | struct bfd_link_hash_entry *harg, | |
3260 | bfd_vma val, | |
3261 | const char *imppath, | |
3262 | const char *impfile, | |
3263 | const char *impmember, | |
3264 | unsigned int syscall_flag) | |
252b5132 RH |
3265 | { |
3266 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; | |
3267 | ||
9bd09e22 | 3268 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
0a1b45a2 | 3269 | return true; |
252b5132 RH |
3270 | |
3271 | /* A symbol name which starts with a period is the code for a | |
3272 | function. If the symbol is undefined, then add an undefined | |
3273 | symbol for the function descriptor, and import that instead. */ | |
3274 | if (h->root.root.string[0] == '.' | |
3275 | && h->root.type == bfd_link_hash_undefined | |
3276 | && val == (bfd_vma) -1) | |
3277 | { | |
3278 | struct xcoff_link_hash_entry *hds; | |
3279 | ||
3280 | hds = h->descriptor; | |
3281 | if (hds == NULL) | |
3282 | { | |
3283 | hds = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
3284 | h->root.root.string + 1, | |
0a1b45a2 | 3285 | true, false, true); |
252b5132 | 3286 | if (hds == NULL) |
0a1b45a2 | 3287 | return false; |
252b5132 RH |
3288 | if (hds->root.type == bfd_link_hash_new) |
3289 | { | |
3290 | hds->root.type = bfd_link_hash_undefined; | |
3291 | hds->root.u.undef.abfd = h->root.u.undef.abfd; | |
3292 | } | |
3293 | hds->flags |= XCOFF_DESCRIPTOR; | |
858ef0ce | 3294 | BFD_ASSERT ((h->flags & XCOFF_DESCRIPTOR) == 0); |
252b5132 RH |
3295 | hds->descriptor = h; |
3296 | h->descriptor = hds; | |
3297 | } | |
3298 | ||
3299 | /* Now, if the descriptor is undefined, import the descriptor | |
b34976b6 AM |
3300 | rather than the symbol we were told to import. FIXME: Is |
3301 | this correct in all cases? */ | |
252b5132 RH |
3302 | if (hds->root.type == bfd_link_hash_undefined) |
3303 | h = hds; | |
3304 | } | |
3305 | ||
1fdf0249 | 3306 | h->flags |= (XCOFF_IMPORT | syscall_flag); |
252b5132 RH |
3307 | |
3308 | if (val != (bfd_vma) -1) | |
3309 | { | |
93fd13c7 | 3310 | if (h->root.type == bfd_link_hash_defined) |
1a72702b AM |
3311 | (*info->callbacks->multiple_definition) (info, &h->root, output_bfd, |
3312 | bfd_abs_section_ptr, val); | |
252b5132 RH |
3313 | |
3314 | h->root.type = bfd_link_hash_defined; | |
3315 | h->root.u.def.section = bfd_abs_section_ptr; | |
3316 | h->root.u.def.value = val; | |
c4037431 | 3317 | h->smclas = XMC_XO; |
252b5132 RH |
3318 | } |
3319 | ||
858ef0ce | 3320 | if (!xcoff_set_import_path (info, h, imppath, impfile, impmember)) |
0a1b45a2 | 3321 | return false; |
252b5132 | 3322 | |
0a1b45a2 | 3323 | return true; |
252b5132 RH |
3324 | } |
3325 | ||
3326 | /* Export a symbol. */ | |
3327 | ||
0a1b45a2 | 3328 | bool |
116c20d2 NC |
3329 | bfd_xcoff_export_symbol (bfd *output_bfd, |
3330 | struct bfd_link_info *info, | |
3331 | struct bfd_link_hash_entry *harg) | |
252b5132 RH |
3332 | { |
3333 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; | |
3334 | ||
9bd09e22 | 3335 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
0a1b45a2 | 3336 | return true; |
252b5132 | 3337 | |
a8bc481f CC |
3338 | /* As AIX linker, symbols exported with hidden visibility are |
3339 | silently ignored. */ | |
3340 | if (h->visibility == SYM_V_HIDDEN) | |
3341 | return true; | |
3342 | ||
3343 | if (h->visibility == SYM_V_INTERNAL) | |
3344 | { | |
3345 | _bfd_error_handler (_("%pB: cannot export internal symbol `%s`."), | |
3346 | output_bfd, h->root.root.string); | |
3347 | bfd_set_error (bfd_error_bad_value); | |
3348 | return false; | |
3349 | } | |
3350 | ||
252b5132 RH |
3351 | h->flags |= XCOFF_EXPORT; |
3352 | ||
3353 | /* FIXME: I'm not at all sure what syscall is supposed to mean, so | |
3354 | I'm just going to ignore it until somebody explains it. */ | |
3355 | ||
252b5132 RH |
3356 | /* Make sure we don't garbage collect this symbol. */ |
3357 | if (! xcoff_mark_symbol (info, h)) | |
0a1b45a2 | 3358 | return false; |
252b5132 RH |
3359 | |
3360 | /* If this is a function descriptor, make sure we don't garbage | |
3361 | collect the associated function code. We normally don't have to | |
3362 | worry about this, because the descriptor will be attached to a | |
3363 | section with relocs, but if we are creating the descriptor | |
3364 | ourselves those relocs will not be visible to the mark code. */ | |
3365 | if ((h->flags & XCOFF_DESCRIPTOR) != 0) | |
3366 | { | |
3367 | if (! xcoff_mark_symbol (info, h->descriptor)) | |
0a1b45a2 | 3368 | return false; |
252b5132 RH |
3369 | } |
3370 | ||
0a1b45a2 | 3371 | return true; |
252b5132 RH |
3372 | } |
3373 | ||
3374 | /* Count a reloc against a symbol. This is called for relocs | |
3375 | generated by the linker script, typically for global constructors | |
3376 | and destructors. */ | |
3377 | ||
0a1b45a2 | 3378 | bool |
116c20d2 NC |
3379 | bfd_xcoff_link_count_reloc (bfd *output_bfd, |
3380 | struct bfd_link_info *info, | |
3381 | const char *name) | |
252b5132 RH |
3382 | { |
3383 | struct xcoff_link_hash_entry *h; | |
3384 | ||
9bd09e22 | 3385 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
0a1b45a2 | 3386 | return true; |
252b5132 RH |
3387 | |
3388 | h = ((struct xcoff_link_hash_entry *) | |
0a1b45a2 AM |
3389 | bfd_wrapped_link_hash_lookup (output_bfd, info, name, false, false, |
3390 | false)); | |
252b5132 RH |
3391 | if (h == NULL) |
3392 | { | |
4eca0228 | 3393 | _bfd_error_handler (_("%s: no such symbol"), name); |
252b5132 | 3394 | bfd_set_error (bfd_error_no_symbols); |
0a1b45a2 | 3395 | return false; |
252b5132 RH |
3396 | } |
3397 | ||
b3d1832c RS |
3398 | h->flags |= XCOFF_REF_REGULAR; |
3399 | if (xcoff_hash_table (info)->loader_section) | |
3400 | { | |
3401 | h->flags |= XCOFF_LDREL; | |
1876a542 | 3402 | ++xcoff_hash_table (info)->ldinfo.ldrel_count; |
b3d1832c | 3403 | } |
fbc4fff4 | 3404 | |
252b5132 RH |
3405 | /* Mark the symbol to avoid garbage collection. */ |
3406 | if (! xcoff_mark_symbol (info, h)) | |
0a1b45a2 | 3407 | return false; |
252b5132 | 3408 | |
0a1b45a2 | 3409 | return true; |
252b5132 RH |
3410 | } |
3411 | ||
3412 | /* This function is called for each symbol to which the linker script | |
23f5e55e AM |
3413 | assigns a value. |
3414 | FIXME: In cases like the linker test ld-scripts/defined5 where a | |
3415 | symbol is defined both by an input object file and the script, | |
3416 | the script definition doesn't override the object file definition | |
3417 | as is usual for other targets. At least not when the symbol is | |
3418 | output. Other uses of the symbol value by the linker do use the | |
3419 | script value. */ | |
252b5132 | 3420 | |
0a1b45a2 | 3421 | bool |
116c20d2 NC |
3422 | bfd_xcoff_record_link_assignment (bfd *output_bfd, |
3423 | struct bfd_link_info *info, | |
3424 | const char *name) | |
252b5132 RH |
3425 | { |
3426 | struct xcoff_link_hash_entry *h; | |
3427 | ||
9bd09e22 | 3428 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
0a1b45a2 | 3429 | return true; |
252b5132 | 3430 | |
0a1b45a2 AM |
3431 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, true, true, |
3432 | false); | |
252b5132 | 3433 | if (h == NULL) |
0a1b45a2 | 3434 | return false; |
252b5132 RH |
3435 | |
3436 | h->flags |= XCOFF_DEF_REGULAR; | |
3437 | ||
0a1b45a2 | 3438 | return true; |
252b5132 RH |
3439 | } |
3440 | ||
b64232cc RS |
3441 | /* An xcoff_link_hash_traverse callback for which DATA points to an |
3442 | xcoff_loader_info. Mark all symbols that should be automatically | |
3443 | exported. */ | |
3444 | ||
0a1b45a2 | 3445 | static bool |
b64232cc RS |
3446 | xcoff_mark_auto_exports (struct xcoff_link_hash_entry *h, void *data) |
3447 | { | |
3448 | struct xcoff_loader_info *ldinfo; | |
3449 | ||
3450 | ldinfo = (struct xcoff_loader_info *) data; | |
ee698300 | 3451 | if (xcoff_auto_export_p (ldinfo->info, h, ldinfo->auto_export_flags)) |
b64232cc RS |
3452 | { |
3453 | if (!xcoff_mark_symbol (ldinfo->info, h)) | |
0a1b45a2 | 3454 | ldinfo->failed = true; |
b64232cc | 3455 | } |
0a1b45a2 | 3456 | return true; |
b64232cc RS |
3457 | } |
3458 | ||
5b49f6dc RS |
3459 | /* INPUT_BFD has an external symbol associated with hash table entry H |
3460 | and csect CSECT. Return true if INPUT_BFD defines H. */ | |
3461 | ||
0a1b45a2 | 3462 | static bool |
5b49f6dc RS |
3463 | xcoff_final_definition_p (bfd *input_bfd, struct xcoff_link_hash_entry *h, |
3464 | asection *csect) | |
3465 | { | |
3466 | switch (h->root.type) | |
3467 | { | |
3468 | case bfd_link_hash_defined: | |
3469 | case bfd_link_hash_defweak: | |
3470 | /* No input bfd owns absolute symbols. They are written by | |
3471 | xcoff_write_global_symbol instead. */ | |
3472 | return (!bfd_is_abs_section (csect) | |
3473 | && h->root.u.def.section == csect); | |
3474 | ||
3475 | case bfd_link_hash_common: | |
3476 | return h->root.u.c.p->section->owner == input_bfd; | |
3477 | ||
3478 | case bfd_link_hash_undefined: | |
3479 | case bfd_link_hash_undefweak: | |
3480 | /* We can't treat undef.abfd as the owner because that bfd | |
3481 | might be a dynamic object. Allow any bfd to claim it. */ | |
0a1b45a2 | 3482 | return true; |
5b49f6dc RS |
3483 | |
3484 | default: | |
3485 | abort (); | |
3486 | } | |
3487 | } | |
3488 | ||
b3d1832c RS |
3489 | /* See if H should have a loader symbol associated with it. */ |
3490 | ||
0a1b45a2 | 3491 | static bool |
b3d1832c RS |
3492 | xcoff_build_ldsym (struct xcoff_loader_info *ldinfo, |
3493 | struct xcoff_link_hash_entry *h) | |
252b5132 | 3494 | { |
986f0783 | 3495 | size_t amt; |
252b5132 | 3496 | |
b3d1832c | 3497 | /* Warn if this symbol is exported but not defined. */ |
116c20d2 | 3498 | if ((h->flags & XCOFF_EXPORT) != 0 |
858ef0ce | 3499 | && (h->flags & XCOFF_WAS_UNDEFINED) != 0) |
116c20d2 | 3500 | { |
4eca0228 | 3501 | _bfd_error_handler |
858ef0ce RS |
3502 | (_("warning: attempt to export undefined symbol `%s'"), |
3503 | h->root.root.string); | |
0a1b45a2 | 3504 | return true; |
252b5132 RH |
3505 | } |
3506 | ||
116c20d2 NC |
3507 | /* We need to add a symbol to the .loader section if it is mentioned |
3508 | in a reloc which we are copying to the .loader section and it was | |
3509 | not defined or common, or if it is the entry point, or if it is | |
3510 | being exported. */ | |
116c20d2 NC |
3511 | if (((h->flags & XCOFF_LDREL) == 0 |
3512 | || h->root.type == bfd_link_hash_defined | |
3513 | || h->root.type == bfd_link_hash_defweak | |
3514 | || h->root.type == bfd_link_hash_common) | |
3515 | && (h->flags & XCOFF_ENTRY) == 0 | |
3516 | && (h->flags & XCOFF_EXPORT) == 0) | |
0a1b45a2 | 3517 | return true; |
252b5132 | 3518 | |
116c20d2 NC |
3519 | /* We need to add this symbol to the .loader symbols. */ |
3520 | ||
3521 | BFD_ASSERT (h->ldsym == NULL); | |
3522 | amt = sizeof (struct internal_ldsym); | |
3523 | h->ldsym = bfd_zalloc (ldinfo->output_bfd, amt); | |
3524 | if (h->ldsym == NULL) | |
252b5132 | 3525 | { |
0a1b45a2 AM |
3526 | ldinfo->failed = true; |
3527 | return false; | |
116c20d2 | 3528 | } |
252b5132 | 3529 | |
116c20d2 | 3530 | if ((h->flags & XCOFF_IMPORT) != 0) |
670562e9 RS |
3531 | { |
3532 | /* Give imported descriptors class XMC_DS rather than XMC_UA. */ | |
3533 | if ((h->flags & XCOFF_DESCRIPTOR) != 0) | |
3534 | h->smclas = XMC_DS; | |
3535 | h->ldsym->l_ifile = h->ldindx; | |
3536 | } | |
252b5132 | 3537 | |
116c20d2 NC |
3538 | /* The first 3 symbol table indices are reserved to indicate the |
3539 | data, text and bss sections. */ | |
3540 | h->ldindx = ldinfo->ldsym_count + 3; | |
252b5132 | 3541 | |
116c20d2 | 3542 | ++ldinfo->ldsym_count; |
252b5132 | 3543 | |
116c20d2 NC |
3544 | if (! bfd_xcoff_put_ldsymbol_name (ldinfo->output_bfd, ldinfo, |
3545 | h->ldsym, h->root.root.string)) | |
0a1b45a2 | 3546 | return false; |
252b5132 | 3547 | |
116c20d2 | 3548 | h->flags |= XCOFF_BUILT_LDSYM; |
0a1b45a2 | 3549 | return true; |
b3d1832c RS |
3550 | } |
3551 | ||
3552 | /* An xcoff_htab_traverse callback that is called for each symbol | |
3553 | once garbage collection is complete. */ | |
3554 | ||
0a1b45a2 | 3555 | static bool |
b3d1832c RS |
3556 | xcoff_post_gc_symbol (struct xcoff_link_hash_entry *h, void * p) |
3557 | { | |
3558 | struct xcoff_loader_info *ldinfo = (struct xcoff_loader_info *) p; | |
3559 | ||
b3d1832c RS |
3560 | /* __rtinit, this symbol has special handling. */ |
3561 | if (h->flags & XCOFF_RTINIT) | |
0a1b45a2 | 3562 | return true; |
b3d1832c | 3563 | |
b3d1832c RS |
3564 | /* We don't want to garbage collect symbols which are not defined in |
3565 | XCOFF files. This is a convenient place to mark them. */ | |
3566 | if (xcoff_hash_table (ldinfo->info)->gc | |
3567 | && (h->flags & XCOFF_MARK) == 0 | |
3568 | && (h->root.type == bfd_link_hash_defined | |
3569 | || h->root.type == bfd_link_hash_defweak) | |
3570 | && (h->root.u.def.section->owner == NULL | |
3571 | || (h->root.u.def.section->owner->xvec | |
3572 | != ldinfo->info->output_bfd->xvec))) | |
3573 | h->flags |= XCOFF_MARK; | |
3574 | ||
3575 | /* Skip discarded symbols. */ | |
3576 | if (xcoff_hash_table (ldinfo->info)->gc | |
3577 | && (h->flags & XCOFF_MARK) == 0) | |
0a1b45a2 | 3578 | return true; |
b3d1832c RS |
3579 | |
3580 | /* If this is still a common symbol, and it wasn't garbage | |
3581 | collected, we need to actually allocate space for it in the .bss | |
3582 | section. */ | |
3583 | if (h->root.type == bfd_link_hash_common | |
3584 | && h->root.u.c.p->section->size == 0) | |
3585 | { | |
3586 | BFD_ASSERT (bfd_is_com_section (h->root.u.c.p->section)); | |
3587 | h->root.u.c.p->section->size = h->root.u.c.size; | |
3588 | } | |
3589 | ||
3590 | if (xcoff_hash_table (ldinfo->info)->loader_section) | |
3591 | { | |
ee698300 | 3592 | if (xcoff_auto_export_p (ldinfo->info, h, ldinfo->auto_export_flags)) |
b3d1832c RS |
3593 | h->flags |= XCOFF_EXPORT; |
3594 | ||
3595 | if (!xcoff_build_ldsym (ldinfo, h)) | |
0a1b45a2 | 3596 | return false; |
b3d1832c | 3597 | } |
252b5132 | 3598 | |
0a1b45a2 | 3599 | return true; |
116c20d2 | 3600 | } |
e450936a RS |
3601 | |
3602 | /* INPUT_BFD includes XCOFF symbol ISYM, which is associated with linker | |
f9a6a8f0 | 3603 | hash table entry H and csect CSECT. AUX contains ISYM's auxiliary |
e450936a RS |
3604 | csect information, if any. NAME is the function's name if the name |
3605 | is stored in the .debug section, otherwise it is null. | |
3606 | ||
3607 | Return 1 if we should include an appropriately-adjusted ISYM | |
3608 | in the output file, 0 if we should discard ISYM, or -1 if an | |
3609 | error occured. */ | |
3610 | ||
3611 | static int | |
3612 | xcoff_keep_symbol_p (struct bfd_link_info *info, bfd *input_bfd, | |
3613 | struct internal_syment *isym, | |
3614 | union internal_auxent *aux, | |
3615 | struct xcoff_link_hash_entry *h, | |
3616 | asection *csect, const char *name) | |
3617 | { | |
3618 | int smtyp; | |
3619 | ||
3620 | /* If we are skipping this csect, we want to strip the symbol too. */ | |
3621 | if (csect == NULL) | |
3622 | return 0; | |
3623 | ||
3624 | /* Likewise if we garbage-collected the csect. */ | |
3625 | if (xcoff_hash_table (info)->gc | |
3626 | && !bfd_is_abs_section (csect) | |
3627 | && !bfd_is_und_section (csect) | |
8ba4f8f6 | 3628 | && csect->gc_mark == 0) |
e450936a RS |
3629 | return 0; |
3630 | ||
3631 | /* An XCOFF linker always removes C_STAT symbols. */ | |
3632 | if (isym->n_sclass == C_STAT) | |
3633 | return 0; | |
3634 | ||
3635 | /* We generate the TOC anchor separately. */ | |
3636 | if (isym->n_sclass == C_HIDEXT | |
3637 | && aux->x_csect.x_smclas == XMC_TC0) | |
3638 | return 0; | |
3639 | ||
3640 | /* If we are stripping all symbols, we want to discard this one. */ | |
3641 | if (info->strip == strip_all) | |
3642 | return 0; | |
3643 | ||
5b49f6dc | 3644 | /* Discard symbols that are defined elsewhere. */ |
8602d4fe | 3645 | if (EXTERN_SYM_P (isym->n_sclass)) |
5b49f6dc RS |
3646 | { |
3647 | if ((h->flags & XCOFF_ALLOCATED) != 0) | |
3648 | return 0; | |
3649 | if (!xcoff_final_definition_p (input_bfd, h, csect)) | |
3650 | return 0; | |
3651 | } | |
e450936a RS |
3652 | |
3653 | /* If we're discarding local symbols, check whether ISYM is local. */ | |
5b49f6dc | 3654 | smtyp = SMTYP_SMTYP (aux->x_csect.x_smtyp); |
e450936a | 3655 | if (info->discard == discard_all |
8602d4fe | 3656 | && !EXTERN_SYM_P (isym->n_sclass) |
e450936a RS |
3657 | && (isym->n_sclass != C_HIDEXT || smtyp != XTY_SD)) |
3658 | return 0; | |
3659 | ||
3660 | /* If we're stripping debugging symbols, check whether ISYM is one. */ | |
3661 | if (info->strip == strip_debugger | |
3662 | && isym->n_scnum == N_DEBUG) | |
3663 | return 0; | |
3664 | ||
3665 | /* If we are stripping symbols based on name, check how ISYM's | |
3666 | name should be handled. */ | |
3667 | if (info->strip == strip_some | |
3668 | || info->discard == discard_l) | |
3669 | { | |
3670 | char buf[SYMNMLEN + 1]; | |
3671 | ||
3672 | if (name == NULL) | |
3673 | { | |
3674 | name = _bfd_coff_internal_syment_name (input_bfd, isym, buf); | |
3675 | if (name == NULL) | |
3676 | return -1; | |
3677 | } | |
3678 | ||
3679 | if (info->strip == strip_some | |
0a1b45a2 | 3680 | && bfd_hash_lookup (info->keep_hash, name, false, false) == NULL) |
e450936a RS |
3681 | return 0; |
3682 | ||
3683 | if (info->discard == discard_l | |
8602d4fe | 3684 | && !EXTERN_SYM_P (isym->n_sclass) |
e450936a RS |
3685 | && (isym->n_sclass != C_HIDEXT || smtyp != XTY_SD) |
3686 | && bfd_is_local_label_name (input_bfd, name)) | |
3687 | return 0; | |
3688 | } | |
3689 | ||
3690 | return 1; | |
3691 | } | |
3692 | ||
1876a542 CC |
3693 | /* Compute the current size of the .loader section. Start filling |
3694 | its header but it will be finalized in xcoff_build_loader_section. */ | |
b3d1832c | 3695 | |
0a1b45a2 | 3696 | static bool |
1876a542 | 3697 | xcoff_size_loader_section (struct xcoff_loader_info *ldinfo) |
b3d1832c RS |
3698 | { |
3699 | bfd *output_bfd; | |
3700 | struct xcoff_link_hash_table *htab; | |
3701 | struct internal_ldhdr *ldhdr; | |
3702 | struct xcoff_import_file *fl; | |
3703 | bfd_size_type stoff; | |
3704 | size_t impsize, impcount; | |
3705 | asection *lsec; | |
1876a542 CC |
3706 | |
3707 | output_bfd = ldinfo->output_bfd; | |
3708 | htab = xcoff_hash_table (ldinfo->info); | |
3709 | ldhdr = &htab->ldhdr; | |
3710 | ||
3711 | /* If this function has already been called (ie l_version is set) | |
3712 | and the number of symbols or relocations haven't changed since | |
3713 | last call, the size is already known. */ | |
3714 | if (ldhdr->l_version != 0 | |
3715 | && ldhdr->l_nsyms == ldinfo->ldsym_count | |
3716 | && ldhdr->l_nreloc == ldinfo->ldrel_count) | |
3717 | return true; | |
b3d1832c RS |
3718 | |
3719 | /* Work out the size of the import file names. Each import file ID | |
3720 | consists of three null terminated strings: the path, the file | |
3721 | name, and the archive member name. The first entry in the list | |
3722 | of names is the path to use to find objects, which the linker has | |
3723 | passed in as the libpath argument. For some reason, the path | |
3724 | entry in the other import file names appears to always be empty. */ | |
1876a542 | 3725 | if (ldhdr->l_nimpid == 0) |
b3d1832c | 3726 | { |
1876a542 CC |
3727 | impsize = strlen (ldinfo->libpath) + 3; |
3728 | impcount = 1; | |
3729 | for (fl = htab->imports; fl != NULL; fl = fl->next) | |
3730 | { | |
3731 | ++impcount; | |
3732 | impsize += (strlen (fl->path) | |
3733 | + strlen (fl->file) | |
3734 | + strlen (fl->member) | |
3735 | + 3); | |
3736 | } | |
3737 | ldhdr->l_istlen = impsize; | |
3738 | ldhdr->l_nimpid = impcount; | |
b3d1832c RS |
3739 | } |
3740 | ||
3741 | /* Set up the .loader section header. */ | |
b3d1832c RS |
3742 | ldhdr->l_version = bfd_xcoff_ldhdr_version(output_bfd); |
3743 | ldhdr->l_nsyms = ldinfo->ldsym_count; | |
1876a542 | 3744 | ldhdr->l_nreloc = ldinfo->ldrel_count; |
b3d1832c RS |
3745 | ldhdr->l_impoff = (bfd_xcoff_ldhdrsz (output_bfd) |
3746 | + ldhdr->l_nsyms * bfd_xcoff_ldsymsz (output_bfd) | |
3747 | + ldhdr->l_nreloc * bfd_xcoff_ldrelsz (output_bfd)); | |
3748 | ldhdr->l_stlen = ldinfo->string_size; | |
1876a542 | 3749 | stoff = ldhdr->l_impoff + ldhdr->l_istlen; |
b3d1832c RS |
3750 | if (ldinfo->string_size == 0) |
3751 | ldhdr->l_stoff = 0; | |
3752 | else | |
3753 | ldhdr->l_stoff = stoff; | |
3754 | ||
3755 | /* 64 bit elements to ldhdr | |
3756 | The swap out routine for 32 bit will ignore them. | |
3757 | Nothing fancy, symbols come after the header and relocs come | |
3758 | after symbols. */ | |
3759 | ldhdr->l_symoff = bfd_xcoff_ldhdrsz (output_bfd); | |
3760 | ldhdr->l_rldoff = (bfd_xcoff_ldhdrsz (output_bfd) | |
3761 | + ldhdr->l_nsyms * bfd_xcoff_ldsymsz (output_bfd)); | |
3762 | ||
1876a542 | 3763 | /* Save the size of the .loader section. */ |
b3d1832c RS |
3764 | lsec = htab->loader_section; |
3765 | lsec->size = stoff + ldhdr->l_stlen; | |
b3d1832c | 3766 | |
0a1b45a2 | 3767 | return true; |
b3d1832c RS |
3768 | } |
3769 | ||
1876a542 | 3770 | /* Prepare the .loader section. This is called by the XCOFF linker |
116c20d2 | 3771 | emulation before_allocation routine. We must set the size of the |
1876a542 CC |
3772 | .loader section before the linker lays out the output file. However, |
3773 | some symbols or relocations might be append to the .loader section | |
3774 | when processing the addresses, thus it's not layout right now and | |
3775 | its size might change. | |
116c20d2 NC |
3776 | LIBPATH is the library path to search for shared objects; this is |
3777 | normally built from the -L arguments passed to the linker. ENTRY | |
3778 | is the name of the entry point symbol (the -e linker option). | |
3779 | FILE_ALIGN is the alignment to use for sections within the file | |
3780 | (the -H linker option). MAXSTACK is the maximum stack size (the | |
3781 | -bmaxstack linker option). MAXDATA is the maximum data size (the | |
3782 | -bmaxdata linker option). GC is whether to do garbage collection | |
3783 | (the -bgc linker option). MODTYPE is the module type (the | |
3784 | -bmodtype linker option). TEXTRO is whether the text section must | |
b64232cc RS |
3785 | be read only (the -btextro linker option). AUTO_EXPORT_FLAGS |
3786 | is a mask of XCOFF_EXPALL and XCOFF_EXPFULL. SPECIAL_SECTIONS | |
3787 | is set by this routine to csects with magic names like _end. */ | |
252b5132 | 3788 | |
0a1b45a2 | 3789 | bool |
116c20d2 NC |
3790 | bfd_xcoff_size_dynamic_sections (bfd *output_bfd, |
3791 | struct bfd_link_info *info, | |
3792 | const char *libpath, | |
3793 | const char *entry, | |
3794 | unsigned long file_align, | |
3795 | unsigned long maxstack, | |
3796 | unsigned long maxdata, | |
0a1b45a2 | 3797 | bool gc, |
116c20d2 | 3798 | int modtype, |
0a1b45a2 | 3799 | bool textro, |
b64232cc | 3800 | unsigned int auto_export_flags, |
116c20d2 | 3801 | asection **special_sections, |
0a1b45a2 | 3802 | bool rtld) |
116c20d2 | 3803 | { |
1876a542 | 3804 | struct xcoff_loader_info *ldinfo; |
116c20d2 | 3805 | int i; |
116c20d2 NC |
3806 | asection *sec; |
3807 | bfd *sub; | |
986f0783 | 3808 | size_t amt; |
252b5132 | 3809 | |
116c20d2 NC |
3810 | if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) |
3811 | { | |
3812 | for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++) | |
3813 | special_sections[i] = NULL; | |
0a1b45a2 | 3814 | return true; |
116c20d2 | 3815 | } |
252b5132 | 3816 | |
1876a542 CC |
3817 | /* Setup ldinfo. */ |
3818 | ldinfo = &(xcoff_hash_table (info)->ldinfo); | |
3819 | ||
3820 | ldinfo->failed = false; | |
3821 | ldinfo->output_bfd = output_bfd; | |
3822 | ldinfo->info = info; | |
3823 | ldinfo->auto_export_flags = auto_export_flags; | |
3824 | ldinfo->ldsym_count = 0; | |
3825 | ldinfo->string_size = 0; | |
3826 | ldinfo->strings = NULL; | |
3827 | ldinfo->string_alc = 0; | |
3828 | ldinfo->libpath = libpath; | |
252b5132 | 3829 | |
116c20d2 NC |
3830 | xcoff_data (output_bfd)->maxstack = maxstack; |
3831 | xcoff_data (output_bfd)->maxdata = maxdata; | |
3832 | xcoff_data (output_bfd)->modtype = modtype; | |
eb1e0e80 | 3833 | |
116c20d2 NC |
3834 | xcoff_hash_table (info)->file_align = file_align; |
3835 | xcoff_hash_table (info)->textro = textro; | |
858ef0ce | 3836 | xcoff_hash_table (info)->rtld = rtld; |
252b5132 | 3837 | |
116c20d2 | 3838 | /* __rtinit */ |
b3d1832c RS |
3839 | if (xcoff_hash_table (info)->loader_section |
3840 | && (info->init_function || info->fini_function || rtld)) | |
116c20d2 NC |
3841 | { |
3842 | struct xcoff_link_hash_entry *hsym; | |
3843 | struct internal_ldsym *ldsym; | |
252b5132 | 3844 | |
116c20d2 | 3845 | hsym = xcoff_link_hash_lookup (xcoff_hash_table (info), |
0a1b45a2 | 3846 | "__rtinit", false, false, true); |
116c20d2 | 3847 | if (hsym == NULL) |
252b5132 | 3848 | { |
4eca0228 | 3849 | _bfd_error_handler |
116c20d2 | 3850 | (_("error: undefined symbol __rtinit")); |
0a1b45a2 | 3851 | return false; |
252b5132 | 3852 | } |
252b5132 | 3853 | |
116c20d2 NC |
3854 | xcoff_mark_symbol (info, hsym); |
3855 | hsym->flags |= (XCOFF_DEF_REGULAR | XCOFF_RTINIT); | |
252b5132 | 3856 | |
116c20d2 NC |
3857 | /* __rtinit initialized. */ |
3858 | amt = sizeof (* ldsym); | |
3859 | ldsym = bfd_malloc (amt); | |
252b5132 | 3860 | |
116c20d2 NC |
3861 | ldsym->l_value = 0; /* Will be filled in later. */ |
3862 | ldsym->l_scnum = 2; /* Data section. */ | |
3863 | ldsym->l_smtype = XTY_SD; /* Csect section definition. */ | |
3864 | ldsym->l_smclas = 5; /* .rw. */ | |
3865 | ldsym->l_ifile = 0; /* Special system loader symbol. */ | |
3866 | ldsym->l_parm = 0; /* NA. */ | |
252b5132 | 3867 | |
116c20d2 NC |
3868 | /* Force __rtinit to be the first symbol in the loader symbol table |
3869 | See xcoff_build_ldsyms | |
b34976b6 | 3870 | |
116c20d2 NC |
3871 | The first 3 symbol table indices are reserved to indicate the data, |
3872 | text and bss sections. */ | |
1876a542 | 3873 | BFD_ASSERT (0 == ldinfo->ldsym_count); |
9a4c7f16 | 3874 | |
116c20d2 | 3875 | hsym->ldindx = 3; |
1876a542 | 3876 | ldinfo->ldsym_count = 1; |
116c20d2 | 3877 | hsym->ldsym = ldsym; |
9a4c7f16 | 3878 | |
1876a542 | 3879 | if (! bfd_xcoff_put_ldsymbol_name (ldinfo->output_bfd, ldinfo, |
116c20d2 | 3880 | hsym->ldsym, hsym->root.root.string)) |
0a1b45a2 | 3881 | return false; |
9a4c7f16 | 3882 | |
116c20d2 NC |
3883 | /* This symbol is written out by xcoff_write_global_symbol |
3884 | Set stuff up so xcoff_write_global_symbol logic works. */ | |
3885 | hsym->flags |= XCOFF_DEF_REGULAR | XCOFF_MARK; | |
3886 | hsym->root.type = bfd_link_hash_defined; | |
3887 | hsym->root.u.def.value = 0; | |
3888 | } | |
9a4c7f16 | 3889 | |
116c20d2 | 3890 | /* Garbage collect unused sections. */ |
0e1862bb | 3891 | if (bfd_link_relocatable (info) || !gc) |
116c20d2 | 3892 | { |
0a1b45a2 AM |
3893 | gc = false; |
3894 | xcoff_hash_table (info)->gc = false; | |
9a4c7f16 | 3895 | |
116c20d2 NC |
3896 | /* We still need to call xcoff_mark, in order to set ldrel_count |
3897 | correctly. */ | |
c72f2fb2 | 3898 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
3899 | { |
3900 | asection *o; | |
9a4c7f16 | 3901 | |
116c20d2 NC |
3902 | for (o = sub->sections; o != NULL; o = o->next) |
3903 | { | |
47dfb2ca RS |
3904 | /* We shouldn't unconditionaly mark the TOC section. |
3905 | The output file should only have a TOC if either | |
3906 | (a) one of the input files did or (b) we end up | |
3907 | creating TOC references as part of the link process. */ | |
3908 | if (o != xcoff_hash_table (info)->toc_section | |
8ba4f8f6 | 3909 | && o->gc_mark == 0) |
116c20d2 NC |
3910 | { |
3911 | if (! xcoff_mark (info, o)) | |
3912 | goto error_return; | |
3913 | } | |
3914 | } | |
3915 | } | |
3916 | } | |
3917 | else | |
3918 | { | |
7d504122 RS |
3919 | if (entry != NULL |
3920 | && !xcoff_mark_symbol_by_name (info, entry, XCOFF_ENTRY)) | |
3921 | goto error_return; | |
3922 | if (info->init_function != NULL | |
3923 | && !xcoff_mark_symbol_by_name (info, info->init_function, 0)) | |
3924 | goto error_return; | |
3925 | if (info->fini_function != NULL | |
3926 | && !xcoff_mark_symbol_by_name (info, info->fini_function, 0)) | |
116c20d2 | 3927 | goto error_return; |
b64232cc RS |
3928 | if (auto_export_flags != 0) |
3929 | { | |
3930 | xcoff_link_hash_traverse (xcoff_hash_table (info), | |
1876a542 CC |
3931 | xcoff_mark_auto_exports, ldinfo); |
3932 | if (ldinfo->failed) | |
b64232cc RS |
3933 | goto error_return; |
3934 | } | |
116c20d2 | 3935 | xcoff_sweep (info); |
0a1b45a2 | 3936 | xcoff_hash_table (info)->gc = true; |
116c20d2 | 3937 | } |
9a4c7f16 | 3938 | |
116c20d2 NC |
3939 | /* Return special sections to the caller. */ |
3940 | for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++) | |
3941 | { | |
3942 | sec = xcoff_hash_table (info)->special_sections[i]; | |
252b5132 | 3943 | |
116c20d2 NC |
3944 | if (sec != NULL |
3945 | && gc | |
8ba4f8f6 | 3946 | && sec->gc_mark == 0) |
116c20d2 | 3947 | sec = NULL; |
252b5132 | 3948 | |
116c20d2 NC |
3949 | special_sections[i] = sec; |
3950 | } | |
e92d460e | 3951 | |
116c20d2 NC |
3952 | if (info->input_bfds == NULL) |
3953 | /* I'm not sure what to do in this bizarre case. */ | |
0a1b45a2 | 3954 | return true; |
dc810e39 | 3955 | |
b3d1832c | 3956 | xcoff_link_hash_traverse (xcoff_hash_table (info), xcoff_post_gc_symbol, |
1876a542 CC |
3957 | (void *) ldinfo); |
3958 | if (ldinfo->failed) | |
116c20d2 | 3959 | goto error_return; |
252b5132 | 3960 | |
b3d1832c | 3961 | if (xcoff_hash_table (info)->loader_section |
1876a542 | 3962 | && !xcoff_size_loader_section (ldinfo)) |
116c20d2 | 3963 | goto error_return; |
252b5132 | 3964 | |
1876a542 CC |
3965 | return true; |
3966 | ||
3967 | error_return: | |
3968 | free (ldinfo->strings); | |
3969 | return false; | |
3970 | } | |
3971 | ||
3972 | /* Lay out the .loader section, finalizing its header and | |
3973 | filling the import paths */ | |
3974 | static bool | |
3975 | xcoff_build_loader_section (struct xcoff_loader_info *ldinfo) | |
3976 | { | |
3977 | bfd *output_bfd; | |
3978 | asection *lsec; | |
3979 | struct xcoff_link_hash_table *htab; | |
3980 | struct internal_ldhdr *ldhdr; | |
3981 | struct xcoff_import_file *fl; | |
3982 | char *out; | |
3983 | ||
3984 | output_bfd = ldinfo->output_bfd; | |
3985 | htab = xcoff_hash_table (ldinfo->info); | |
3986 | lsec = htab->loader_section; | |
3987 | ldhdr = &htab->ldhdr; | |
3988 | ||
3989 | /* We could have called xcoff_size_loader_section one more time. | |
3990 | However, this function is called once all the addresses have | |
3991 | been layout thus the .loader section shouldn't be changed | |
3992 | anymore. */ | |
3993 | BFD_ASSERT (ldhdr->l_nsyms == ldinfo->ldsym_count); | |
3994 | BFD_ASSERT (ldhdr->l_nreloc == ldinfo->ldrel_count); | |
3995 | ||
3996 | /* We now know the final size of the .loader section. Allocate | |
3997 | space for it. */ | |
3998 | lsec->contents = bfd_zalloc (output_bfd, lsec->size); | |
3999 | if (lsec->contents == NULL) | |
4000 | return false; | |
4001 | ||
4002 | /* Set up the header. */ | |
4003 | bfd_xcoff_swap_ldhdr_out (output_bfd, ldhdr, lsec->contents); | |
4004 | ||
4005 | /* Set up the import file names. */ | |
4006 | out = (char *) lsec->contents + ldhdr->l_impoff; | |
4007 | strcpy (out, ldinfo->libpath); | |
4008 | out += strlen (ldinfo->libpath) + 1; | |
4009 | *out++ = '\0'; | |
4010 | *out++ = '\0'; | |
4011 | for (fl = htab->imports; fl != NULL; fl = fl->next) | |
4012 | { | |
4013 | const char *s; | |
4014 | ||
4015 | s = fl->path; | |
4016 | while ((*out++ = *s++) != '\0') | |
4017 | ; | |
4018 | s = fl->file; | |
4019 | while ((*out++ = *s++) != '\0') | |
4020 | ; | |
4021 | s = fl->member; | |
4022 | while ((*out++ = *s++) != '\0') | |
4023 | ; | |
4024 | } | |
4025 | ||
4026 | BFD_ASSERT ((bfd_size_type) ((bfd_byte *) out - lsec->contents) == ldhdr->l_impoff + ldhdr->l_istlen); | |
4027 | ||
4028 | /* Set up the symbol string table. */ | |
4029 | if (ldinfo->string_size > 0) | |
4030 | { | |
4031 | memcpy (out, ldinfo->strings, ldinfo->string_size); | |
4032 | free (ldinfo->strings); | |
4033 | ldinfo->strings = NULL; | |
4034 | } | |
4035 | ||
4036 | /* We can't set up the symbol table or the relocs yet, because we | |
4037 | don't yet know the final position of the various sections. The | |
4038 | .loader symbols are written out when the corresponding normal | |
4039 | symbols are written out in xcoff_link_input_bfd or | |
4040 | xcoff_write_global_symbol. The .loader relocs are written out | |
4041 | when the corresponding normal relocs are handled in | |
4042 | xcoff_link_input_bfd. */ | |
4043 | ||
4044 | return true; | |
4045 | } | |
4046 | ||
4047 | ||
4048 | /* Lay out the .loader section and allocate the space for | |
4049 | the other dynamic sections of XCOFF. */ | |
4050 | bool | |
4051 | bfd_xcoff_build_dynamic_sections (bfd *output_bfd, | |
4052 | struct bfd_link_info *info) | |
4053 | { | |
4054 | struct xcoff_loader_info *ldinfo; | |
4055 | struct bfd_strtab_hash *debug_strtab; | |
4056 | bfd_byte *debug_contents = NULL; | |
4057 | bfd *sub; | |
4058 | asection *sec; | |
4059 | ||
4060 | ldinfo = &(xcoff_hash_table (info)->ldinfo); | |
4061 | ||
4062 | if (xcoff_hash_table (info)->loader_section | |
4063 | && !xcoff_build_loader_section (ldinfo)) | |
4064 | return false; | |
4065 | ||
116c20d2 NC |
4066 | /* Allocate space for the magic sections. */ |
4067 | sec = xcoff_hash_table (info)->linkage_section; | |
4068 | if (sec->size > 0) | |
4069 | { | |
4070 | sec->contents = bfd_zalloc (output_bfd, sec->size); | |
4071 | if (sec->contents == NULL) | |
1876a542 | 4072 | return false; |
252b5132 | 4073 | } |
116c20d2 NC |
4074 | sec = xcoff_hash_table (info)->toc_section; |
4075 | if (sec->size > 0) | |
252b5132 | 4076 | { |
116c20d2 NC |
4077 | sec->contents = bfd_zalloc (output_bfd, sec->size); |
4078 | if (sec->contents == NULL) | |
1876a542 | 4079 | return false; |
116c20d2 NC |
4080 | } |
4081 | sec = xcoff_hash_table (info)->descriptor_section; | |
4082 | if (sec->size > 0) | |
4083 | { | |
4084 | sec->contents = bfd_zalloc (output_bfd, sec->size); | |
4085 | if (sec->contents == NULL) | |
1876a542 | 4086 | return false; |
116c20d2 | 4087 | } |
252b5132 | 4088 | |
e450936a RS |
4089 | /* Now that we've done garbage collection, decide which symbols to keep, |
4090 | and figure out the contents of the .debug section. */ | |
116c20d2 | 4091 | debug_strtab = xcoff_hash_table (info)->debug_strtab; |
252b5132 | 4092 | |
c72f2fb2 | 4093 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
4094 | { |
4095 | asection *subdeb; | |
4096 | bfd_size_type symcount; | |
e450936a | 4097 | long *debug_index; |
116c20d2 | 4098 | asection **csectpp; |
3df13c4a | 4099 | unsigned int *lineno_counts; |
e450936a | 4100 | struct xcoff_link_hash_entry **sym_hash; |
116c20d2 NC |
4101 | bfd_byte *esym, *esymend; |
4102 | bfd_size_type symesz; | |
beb1bf64 | 4103 | |
f13a99db | 4104 | if (sub->xvec != info->output_bfd->xvec) |
116c20d2 | 4105 | continue; |
252b5132 | 4106 | |
e450936a RS |
4107 | if ((sub->flags & DYNAMIC) != 0 |
4108 | && !info->static_link) | |
4109 | continue; | |
252b5132 | 4110 | |
116c20d2 NC |
4111 | if (! _bfd_coff_get_external_symbols (sub)) |
4112 | goto error_return; | |
252b5132 | 4113 | |
116c20d2 | 4114 | symcount = obj_raw_syment_count (sub); |
e450936a | 4115 | debug_index = bfd_zalloc (sub, symcount * sizeof (long)); |
116c20d2 NC |
4116 | if (debug_index == NULL) |
4117 | goto error_return; | |
4118 | xcoff_data (sub)->debug_indices = debug_index; | |
252b5132 | 4119 | |
e450936a RS |
4120 | if (info->strip == strip_all |
4121 | || info->strip == strip_debugger | |
4122 | || info->discard == discard_all) | |
4123 | /* We're stripping all debugging information, so there's no need | |
4124 | to read SUB's .debug section. */ | |
4125 | subdeb = NULL; | |
4126 | else | |
4127 | { | |
4128 | /* Grab the contents of SUB's .debug section, if any. */ | |
4129 | subdeb = bfd_get_section_by_name (sub, ".debug"); | |
81ff113f AM |
4130 | if (subdeb != NULL |
4131 | && subdeb->size != 0 | |
4132 | && (subdeb->flags & SEC_HAS_CONTENTS) != 0) | |
e450936a RS |
4133 | { |
4134 | /* We use malloc and copy the names into the debug | |
4135 | stringtab, rather than bfd_alloc, because I expect | |
4136 | that, when linking many files together, many of the | |
4137 | strings will be the same. Storing the strings in the | |
4138 | hash table should save space in this case. */ | |
4139 | if (!bfd_malloc_and_get_section (sub, subdeb, &debug_contents)) | |
4140 | goto error_return; | |
4141 | } | |
4142 | } | |
252b5132 | 4143 | |
116c20d2 | 4144 | csectpp = xcoff_data (sub)->csects; |
3df13c4a | 4145 | lineno_counts = xcoff_data (sub)->lineno_counts; |
e450936a RS |
4146 | sym_hash = obj_xcoff_sym_hashes (sub); |
4147 | symesz = bfd_coff_symesz (sub); | |
4148 | esym = (bfd_byte *) obj_coff_external_syms (sub); | |
4149 | esymend = esym + symcount * symesz; | |
252b5132 | 4150 | |
e450936a | 4151 | while (esym < esymend) |
116c20d2 | 4152 | { |
e450936a RS |
4153 | struct internal_syment sym; |
4154 | union internal_auxent aux; | |
3df13c4a | 4155 | asection *csect; |
e450936a RS |
4156 | const char *name; |
4157 | int keep_p; | |
4158 | ||
4159 | bfd_coff_swap_sym_in (sub, esym, &sym); | |
252b5132 | 4160 | |
8602d4fe RS |
4161 | /* Read in the csect information, if any. */ |
4162 | if (CSECT_SYM_P (sym.n_sclass)) | |
116c20d2 | 4163 | { |
e450936a RS |
4164 | BFD_ASSERT (sym.n_numaux > 0); |
4165 | bfd_coff_swap_aux_in (sub, esym + symesz * sym.n_numaux, | |
4166 | sym.n_type, sym.n_sclass, | |
4167 | sym.n_numaux - 1, sym.n_numaux, &aux); | |
4168 | } | |
252b5132 | 4169 | |
e450936a RS |
4170 | /* If this symbol's name is stored in the debug section, |
4171 | get a pointer to it. */ | |
4172 | if (debug_contents != NULL | |
4173 | && sym._n._n_n._n_zeroes == 0 | |
4174 | && bfd_coff_symname_in_debug (sub, &sym)) | |
4175 | name = (const char *) debug_contents + sym._n._n_n._n_offset; | |
4176 | else | |
4177 | name = NULL; | |
252b5132 | 4178 | |
e450936a | 4179 | /* Decide whether to copy this symbol to the output file. */ |
3df13c4a | 4180 | csect = *csectpp; |
e450936a | 4181 | keep_p = xcoff_keep_symbol_p (info, sub, &sym, &aux, |
3df13c4a | 4182 | *sym_hash, csect, name); |
e450936a | 4183 | if (keep_p < 0) |
1876a542 | 4184 | goto error_return; |
252b5132 | 4185 | |
e450936a RS |
4186 | if (!keep_p) |
4187 | /* Use a debug_index of -2 to record that a symbol should | |
4188 | be stripped. */ | |
4189 | *debug_index = -2; | |
4190 | else | |
4191 | { | |
4192 | /* See whether we should store the symbol name in the | |
4193 | output .debug section. */ | |
4194 | if (name != NULL) | |
116c20d2 | 4195 | { |
116c20d2 | 4196 | bfd_size_type indx; |
252b5132 | 4197 | |
0a1b45a2 | 4198 | indx = _bfd_stringtab_add (debug_strtab, name, true, true); |
116c20d2 NC |
4199 | if (indx == (bfd_size_type) -1) |
4200 | goto error_return; | |
4201 | *debug_index = indx; | |
4202 | } | |
e450936a RS |
4203 | else |
4204 | *debug_index = -1; | |
5b49f6dc RS |
4205 | if (*sym_hash != 0) |
4206 | (*sym_hash)->flags |= XCOFF_ALLOCATED; | |
3df13c4a RS |
4207 | if (*lineno_counts > 0) |
4208 | csect->output_section->lineno_count += *lineno_counts; | |
116c20d2 | 4209 | } |
e450936a RS |
4210 | |
4211 | esym += (sym.n_numaux + 1) * symesz; | |
4212 | csectpp += sym.n_numaux + 1; | |
4213 | sym_hash += sym.n_numaux + 1; | |
3df13c4a | 4214 | lineno_counts += sym.n_numaux + 1; |
e450936a | 4215 | debug_index += sym.n_numaux + 1; |
116c20d2 NC |
4216 | } |
4217 | ||
e450936a RS |
4218 | if (debug_contents) |
4219 | { | |
4220 | free (debug_contents); | |
4221 | debug_contents = NULL; | |
116c20d2 | 4222 | |
e450936a RS |
4223 | /* Clear the size of subdeb, so that it is not included directly |
4224 | in the output file. */ | |
4225 | subdeb->size = 0; | |
4226 | } | |
116c20d2 NC |
4227 | |
4228 | if (! info->keep_memory) | |
4229 | { | |
4230 | if (! _bfd_coff_free_symbols (sub)) | |
4231 | goto error_return; | |
4232 | } | |
dc810e39 | 4233 | } |
252b5132 | 4234 | |
1417c848 CC |
4235 | if (info->strip != strip_all |
4236 | && xcoff_hash_table (info)->debug_section != NULL) | |
116c20d2 NC |
4237 | xcoff_hash_table (info)->debug_section->size = |
4238 | _bfd_stringtab_size (debug_strtab); | |
252b5132 | 4239 | |
0a1b45a2 | 4240 | return true; |
116c20d2 NC |
4241 | |
4242 | error_return: | |
c9594989 | 4243 | free (debug_contents); |
0a1b45a2 | 4244 | return false; |
252b5132 | 4245 | } |
252b5132 | 4246 | |
0a1b45a2 | 4247 | bool |
116c20d2 NC |
4248 | bfd_xcoff_link_generate_rtinit (bfd *abfd, |
4249 | const char *init, | |
4250 | const char *fini, | |
0a1b45a2 | 4251 | bool rtld) |
252b5132 | 4252 | { |
116c20d2 | 4253 | struct bfd_in_memory *bim; |
252b5132 | 4254 | |
116c20d2 NC |
4255 | bim = bfd_malloc ((bfd_size_type) sizeof (* bim)); |
4256 | if (bim == NULL) | |
0a1b45a2 | 4257 | return false; |
252b5132 | 4258 | |
116c20d2 NC |
4259 | bim->size = 0; |
4260 | bim->buffer = 0; | |
252b5132 | 4261 | |
c72f2fb2 | 4262 | abfd->link.next = 0; |
116c20d2 NC |
4263 | abfd->format = bfd_object; |
4264 | abfd->iostream = (void *) bim; | |
4265 | abfd->flags = BFD_IN_MEMORY; | |
65077aa8 | 4266 | abfd->iovec = &_bfd_memory_iovec; |
116c20d2 | 4267 | abfd->direction = write_direction; |
65077aa8 | 4268 | abfd->origin = 0; |
116c20d2 | 4269 | abfd->where = 0; |
252b5132 | 4270 | |
116c20d2 | 4271 | if (! bfd_xcoff_generate_rtinit (abfd, init, fini, rtld)) |
0a1b45a2 | 4272 | return false; |
252b5132 | 4273 | |
116c20d2 NC |
4274 | /* need to reset to unknown or it will not be read back in correctly */ |
4275 | abfd->format = bfd_unknown; | |
4276 | abfd->direction = read_direction; | |
4277 | abfd->where = 0; | |
252b5132 | 4278 | |
0a1b45a2 | 4279 | return true; |
116c20d2 NC |
4280 | } |
4281 | \f | |
2d23f965 CC |
4282 | |
4283 | /* Linker stubs. | |
4284 | The stubs will be gathered in stub csects named "@FIX'number'". | |
4285 | A new csect will be created by xcoff_stub_get_csect_in_range, | |
4286 | everytime a relocation cannot reach its target and its section | |
4287 | is too far from the others stub csects. | |
4288 | The stubs will simply be code generated inside these stub | |
4289 | csects. In order to simplify the symbol table, only the symbols | |
4290 | for the stub csects are written. | |
4291 | ||
4292 | As the code is dependent of the architecture, it's defined | |
4293 | in the backend. | |
4294 | ||
4295 | xcoff_stub_indirect_call: | |
4296 | Used when a 24 bit branch cannot reach its destination and that | |
4297 | this destination isn't a global linkage symbol. | |
4298 | ||
4299 | xcoff_stub_shared_call: | |
4300 | As above but when it's a global linkage symbol. | |
4301 | The main difference being that it doesn't branch to the global | |
4302 | linkage symbol which will then call the shared library. It | |
4303 | directly call it saving the TOC. | |
4304 | ||
4305 | TODO: -bbigtoc option should be able to be implemented using | |
4306 | this stubs. */ | |
4307 | ||
4308 | /* Get the name of a csect which will contain stubs. | |
4309 | It has the same pattern as AIX linker: @FIX"number". */ | |
85649ec8 AM |
4310 | static char * |
4311 | xcoff_stub_csect_name (unsigned int n) | |
2d23f965 | 4312 | { |
85649ec8 | 4313 | char buf[8]; |
2d23f965 CC |
4314 | size_t len; |
4315 | char *csect_name; | |
4316 | ||
4317 | /* For now, allow "only" 1000000 stub csects. */ | |
4318 | if (n >= 1000000) | |
4319 | { | |
4320 | BFD_FAIL(); | |
4321 | return NULL; | |
4322 | } | |
4323 | ||
4324 | sprintf (buf, "%d", n); | |
4325 | len = 4 + strlen (buf) + 1; | |
4326 | ||
4327 | csect_name = bfd_malloc (len); | |
4328 | if (csect_name == NULL) | |
4329 | return NULL; | |
4330 | sprintf (csect_name, "@FIX%d", n); | |
4331 | ||
4332 | return csect_name; | |
4333 | } | |
4334 | ||
4335 | /* Return a stub section which can be reach with a single branch | |
4336 | from SECTION. CREATE means that creating a csect is allowed. */ | |
4337 | static struct xcoff_link_hash_entry * | |
4338 | xcoff_stub_get_csect_in_range (asection *section, | |
4339 | struct bfd_link_info *info, | |
4340 | bool create) | |
4341 | { | |
4342 | struct xcoff_link_hash_table *htab = xcoff_hash_table (info); | |
4343 | struct xcoff_link_hash_entry *csect_entry; | |
4344 | struct bfd_link_hash_entry *bh = NULL; | |
4345 | asection *csect; | |
4346 | unsigned int it; | |
4347 | char *csect_name; | |
4348 | ||
4349 | /* Search for a csect in range. */ | |
4350 | for (csect = htab->params->stub_bfd->sections, it = 0; | |
4351 | csect != NULL; | |
4352 | csect = csect->next, it++) | |
4353 | { | |
4354 | /* A csect is in range if everything instructions in SECTION | |
85649ec8 | 4355 | can branch to every stubs in the stub csect. This can |
2d23f965 CC |
4356 | be simplify by saying that the first entry of each sections |
4357 | (ie the vma of this section) can reach the last entry of the | |
4358 | stub csect (ie the vma of the csect + its size). | |
85649ec8 AM |
4359 | However, as the stub csect might be growing its size isn't |
4360 | fixed. Thus, the last entry of SECTION might not be able | |
4361 | to reach the first entry of the stub csect anymore. | |
4362 | If this case happens, the following condition will be | |
4363 | false during the next pass of bfd_xcoff_size_stubs and | |
4364 | another csect will be used. | |
4365 | This means we might create more stubs than needed. */ | |
2d23f965 CC |
4366 | bfd_vma csect_vma, section_vma; |
4367 | bfd_vma csect_last_vma, section_last_vma; | |
4368 | ||
4369 | csect_vma = (csect->output_section->vma | |
85649ec8 | 4370 | + csect->output_offset); |
2d23f965 CC |
4371 | csect_last_vma = (csect->output_section->vma |
4372 | + csect->output_offset | |
4373 | + csect->size); | |
4374 | section_vma = (section->output_section->vma | |
4375 | + section->output_offset); | |
4376 | section_last_vma = (section->output_section->vma | |
85649ec8 AM |
4377 | + section->output_offset |
4378 | + section->size); | |
2d23f965 CC |
4379 | |
4380 | if (csect_last_vma - section_vma + (1 << 25) < 2 * (1 << 25) | |
4381 | && section_last_vma - csect_vma + (1 << 25) < 2 * (1 << 25)) | |
4382 | break; | |
4383 | } | |
4384 | ||
4385 | if (!create && csect == NULL) | |
4386 | return NULL; | |
4387 | ||
4388 | csect_name = xcoff_stub_csect_name (it); | |
4389 | if (!csect_name) | |
4390 | return NULL; | |
4391 | ||
4392 | /* A stub csect already exists, get its entry. */ | |
4393 | if (csect != NULL) | |
4394 | { | |
4395 | csect_entry = xcoff_link_hash_lookup (htab, csect_name, false, false, true); | |
4396 | free(csect_name); | |
4397 | return csect_entry; | |
4398 | } | |
4399 | ||
4400 | /* Create the csect and its symbol. */ | |
4401 | csect = (*htab->params->add_stub_section) (".pr", section); | |
4402 | if (!csect) | |
4403 | { | |
4404 | free(csect_name); | |
4405 | return NULL; | |
4406 | } | |
4407 | ||
4408 | csect->alignment_power = 2; | |
4409 | csect->gc_mark = 1; | |
4410 | csect->reloc_count = 0; | |
4411 | ||
4412 | /* We need to associate a VMA to this new csect. Otherwise, | |
4413 | our "in range" algorithm won't find it for the next stub. | |
4414 | And as we will be adding this stub section just after the | |
4415 | SECTION, we know its address. */ | |
4416 | csect->output_offset = BFD_ALIGN (section->output_offset + section->size, | |
4417 | 4); | |
4418 | ||
4419 | if (!_bfd_generic_link_add_one_symbol (info, htab->params->stub_bfd, | |
4420 | csect_name, BSF_GLOBAL, csect, 0, | |
4421 | NULL, true, true, &bh)) | |
4422 | { | |
4423 | free(csect_name); | |
4424 | return NULL; | |
4425 | } | |
4426 | ||
4427 | csect_entry = (struct xcoff_link_hash_entry *)bh; | |
4428 | csect_entry->smclas = XMC_PR; | |
4429 | csect_entry->flags = XCOFF_MARK | XCOFF_DEF_REGULAR; | |
4430 | ||
4431 | free(csect_name); | |
4432 | return csect_entry; | |
4433 | } | |
4434 | ||
4435 | ||
4436 | /* Build a name for an entry in the stub hash table. */ | |
4437 | static char * | |
4438 | xcoff_stub_name (const struct xcoff_link_hash_entry *h, | |
4439 | const struct xcoff_link_hash_entry *hcsect) | |
4440 | { | |
4441 | char *stub_name; | |
4442 | size_t len; | |
4443 | ||
4444 | if (h) | |
4445 | { | |
4446 | /* The name of a stub is based on its stub csect and the | |
4447 | symbol it wants to reach. It looks like: ".@FIX0.tramp.f". | |
4448 | When the stub targets a function, the last dot of ".tramp." | |
4449 | is removed to avoid having two dot. */ | |
4450 | len = (1 + 6 | |
4451 | + strlen (hcsect->root.root.string) | |
4452 | + strlen (h->root.root.string) | |
4453 | + 1); | |
4454 | if (h->root.root.string[0] != '.') | |
4455 | len++; | |
4456 | ||
4457 | stub_name = bfd_malloc (len); | |
4458 | if (stub_name == NULL) | |
4459 | return stub_name; | |
4460 | ||
4461 | if (h->root.root.string[0] == '.') | |
4462 | sprintf (stub_name, ".%s.tramp%s", | |
4463 | hcsect->root.root.string, | |
4464 | h->root.root.string); | |
4465 | else | |
4466 | sprintf (stub_name, ".%s.tramp.%s", | |
4467 | hcsect->root.root.string, | |
4468 | h->root.root.string); | |
4469 | } | |
4470 | else | |
4471 | { | |
4472 | BFD_FAIL(); | |
4473 | return NULL; | |
4474 | } | |
4475 | ||
4476 | return stub_name; | |
4477 | } | |
4478 | ||
4479 | /* Look up an entry in the stub hash. */ | |
4480 | struct xcoff_stub_hash_entry * | |
4481 | bfd_xcoff_get_stub_entry (asection *section, | |
4482 | struct xcoff_link_hash_entry *h, | |
4483 | struct bfd_link_info *info) | |
4484 | { | |
4485 | struct xcoff_link_hash_table *htab = xcoff_hash_table (info); | |
4486 | struct xcoff_link_hash_entry *hcsect; | |
4487 | struct xcoff_stub_hash_entry *hstub; | |
4488 | char *stub_name; | |
4489 | ||
4490 | hcsect = xcoff_stub_get_csect_in_range (section, info, false); | |
4491 | if (!hcsect) | |
4492 | return NULL; | |
4493 | ||
4494 | stub_name = xcoff_stub_name (h, hcsect); | |
4495 | if (stub_name == NULL) | |
4496 | return NULL; | |
4497 | ||
4498 | hstub = xcoff_stub_hash_lookup (&htab->stub_hash_table, | |
4499 | stub_name, false, false); | |
4500 | ||
4501 | free (stub_name); | |
4502 | return hstub; | |
4503 | } | |
4504 | ||
4505 | /* Check if the symbol targeted by IREL is reachable. | |
4506 | Return the type of stub needed otherwise. */ | |
4507 | enum xcoff_stub_type | |
4508 | bfd_xcoff_type_of_stub (asection *sec, | |
4509 | const struct internal_reloc *irel, | |
4510 | bfd_vma destination, | |
4511 | struct xcoff_link_hash_entry *h) | |
4512 | { | |
4513 | bfd_vma location, offset, max_offset; | |
4514 | ||
4515 | switch (irel->r_type) | |
4516 | { | |
4517 | default: | |
4518 | return xcoff_stub_none; | |
4519 | ||
4520 | case R_BR: | |
4521 | case R_RBR: | |
4522 | location = (sec->output_section->vma | |
4523 | + sec->output_offset | |
4524 | + irel->r_vaddr | |
4525 | - sec->vma); | |
4526 | ||
4527 | max_offset = 1 << 25 ; | |
4528 | ||
4529 | offset = destination - location; | |
4530 | ||
4531 | if (offset + max_offset < 2 * max_offset) | |
4532 | return xcoff_stub_none; | |
4533 | ||
4534 | /* A stub is needed. Now, check that we can make one. */ | |
4535 | if (h != NULL | |
4536 | && h->descriptor != NULL) | |
4537 | { | |
4538 | /* Not sure how to handle this case. For now, skip it. */ | |
4539 | if (bfd_is_abs_section (h->root.u.def.section)) | |
4540 | return xcoff_stub_none; | |
4541 | ||
4542 | if (h->smclas == XMC_GL) | |
4543 | return xcoff_stub_shared_call; | |
4544 | else | |
4545 | return xcoff_stub_indirect_call; | |
4546 | } | |
4547 | break; | |
4548 | } | |
4549 | ||
4550 | return xcoff_stub_none; | |
4551 | } | |
4552 | ||
4553 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4554 | stub entry are initialised. */ | |
4555 | static struct xcoff_stub_hash_entry * | |
4556 | xcoff_add_stub (const char *stub_name, | |
4557 | struct xcoff_link_hash_entry *hstub_csect, | |
4558 | struct xcoff_link_hash_entry *htarget, | |
4559 | struct bfd_link_info *info, | |
4560 | enum xcoff_stub_type stub_type) | |
4561 | { | |
4562 | struct xcoff_link_hash_table *htab = xcoff_hash_table (info); | |
4563 | struct xcoff_stub_hash_entry *hstub; | |
4564 | bfd_vma stub_offset; | |
4565 | asection *stub_csect; | |
4566 | ||
4567 | stub_csect = hstub_csect->root.u.def.section; | |
4568 | stub_offset = stub_csect->size; | |
4569 | ||
4570 | /* Update the relocation counter and the size of | |
4571 | the containing csect. The size is needed for | |
4572 | the algorithm in xcoff_stub_get_csect_in_range. */ | |
4573 | switch (stub_type) | |
4574 | { | |
4575 | default: | |
4576 | BFD_FAIL (); | |
4577 | return NULL; | |
4578 | ||
4579 | case xcoff_stub_indirect_call: | |
4580 | stub_csect->reloc_count++; | |
4581 | stub_csect->size += bfd_xcoff_stub_indirect_call_size (info->output_bfd); | |
4582 | break; | |
4583 | ||
4584 | case xcoff_stub_shared_call: | |
4585 | stub_csect->reloc_count++; | |
4586 | stub_csect->size += bfd_xcoff_stub_shared_call_size (info->output_bfd); | |
4587 | break; | |
4588 | } | |
4589 | ||
4590 | /* Create the stub entry. */ | |
4591 | hstub = xcoff_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
4592 | true, true); | |
4593 | if (hstub == NULL) | |
4594 | return NULL; | |
4595 | ||
4596 | hstub->htarget = htarget; | |
4597 | hstub->stub_offset = stub_offset; | |
4598 | ||
4599 | /* For indirect call or shared call, the relocations are against | |
4600 | the target descriptor. Its toc entry will be used. */ | |
4601 | if (stub_type == xcoff_stub_indirect_call | |
4602 | || stub_type == xcoff_stub_shared_call) | |
4603 | { | |
4604 | struct xcoff_link_hash_entry *hds = htarget->descriptor; | |
4605 | asection *hds_section = hds->root.u.def.section; | |
4606 | ||
4607 | hstub->htarget = hds; | |
4608 | ||
4609 | /* If the symbol haven't been marked, its section might have | |
4610 | its size and its relocation count been deleted by xcoff_sweep. | |
4611 | Restore it. */ | |
4612 | if ((hds->flags & XCOFF_MARK) == 0) | |
4613 | { | |
4614 | if (hds_section->size == 0 | |
4615 | && hds_section->reloc_count == 0 | |
4616 | && hds_section->rawsize != 0) | |
4617 | { | |
4618 | hds_section->size = hds_section->rawsize; | |
4619 | /* Always two relocations for a XMC_DS symbol. */ | |
4620 | hds_section->reloc_count = 2; | |
4621 | } | |
4622 | ||
4623 | /* Mark the section and the symbol. */ | |
4624 | if (!xcoff_mark (info, hds_section)) | |
4625 | return NULL; | |
4626 | } | |
4627 | ||
4628 | /* Add a TOC entry for the descriptor if non exists. */ | |
4629 | if (hds->toc_section == NULL) | |
4630 | { | |
4631 | int byte_size; | |
4632 | ||
4633 | if (bfd_xcoff_is_xcoff64 (info->output_bfd)) | |
4634 | byte_size = 8; | |
4635 | else if (bfd_xcoff_is_xcoff32 (info->output_bfd)) | |
4636 | byte_size = 4; | |
4637 | else | |
4638 | return NULL; | |
4639 | ||
4640 | /* Allocate room in the fallback TOC section. */ | |
4641 | hds->toc_section = xcoff_hash_table (info)->toc_section; | |
4642 | hds->u.toc_offset = hds->toc_section->size; | |
4643 | hds->toc_section->size += byte_size; | |
4644 | if (!xcoff_mark (info, hds->toc_section)) | |
4645 | return NULL; | |
4646 | ||
4647 | /* Update relocation counters for a static and dynamic | |
4648 | R_TOC relocation. */ | |
4649 | ++hds->toc_section->reloc_count; | |
4650 | ++htab->ldinfo.ldrel_count; | |
4651 | ||
4652 | /* Set the index to -2 to force this symbol to | |
4653 | get written out. */ | |
4654 | hds->indx = -2; | |
4655 | hds->flags |= XCOFF_SET_TOC; | |
4656 | } | |
4657 | } | |
4658 | ||
4659 | return hstub; | |
4660 | } | |
4661 | ||
4662 | static bool | |
4663 | xcoff_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
4664 | { | |
4665 | struct xcoff_stub_hash_entry *hstub | |
4666 | = (struct xcoff_stub_hash_entry *) gen_entry; | |
4667 | ||
4668 | bfd *stub_bfd; | |
4669 | bfd *output_bfd; | |
4670 | struct bfd_link_info *info; | |
4671 | bfd_byte *loc; | |
4672 | bfd_byte *p; | |
4673 | unsigned int i; | |
4674 | ||
4675 | info = (struct bfd_link_info *) in_arg; | |
4676 | stub_bfd = xcoff_hash_table (info)->params->stub_bfd; | |
4677 | output_bfd = info->output_bfd; | |
4678 | ||
4679 | /* Fail if the target section could not be assigned to an output | |
4680 | section. The user should fix his linker script. */ | |
4681 | if (hstub->target_section != NULL | |
4682 | && hstub->target_section->output_section == NULL | |
4683 | && info->non_contiguous_regions) | |
c63d4862 | 4684 | info->callbacks->einfo (_("%F%P: Could not assign `%pA' to an output section. " |
2d23f965 CC |
4685 | "Retry without --enable-non-contiguous-regions.\n"), |
4686 | hstub->target_section); | |
4687 | ||
4688 | loc = (hstub->hcsect->root.u.def.section->contents | |
4689 | + hstub->stub_offset); | |
4690 | p = loc; | |
4691 | ||
4692 | switch (hstub->stub_type) | |
4693 | { | |
4694 | case xcoff_stub_indirect_call: | |
4695 | BFD_ASSERT (hstub->htarget->toc_section != NULL); | |
4696 | /* The first instruction in the stub code needs to be | |
4697 | cooked to hold the correct offset in the toc. It will | |
85649ec8 | 4698 | be filled by xcoff_stub_create_relocations. */ |
2d23f965 CC |
4699 | for (i = 0; i < bfd_xcoff_stub_indirect_call_size(output_bfd) / 4; i++) |
4700 | bfd_put_32 (stub_bfd, | |
4701 | (bfd_vma) bfd_xcoff_stub_indirect_call_code(output_bfd, i), | |
4702 | &p[4 * i]); | |
4703 | break; | |
4704 | ||
4705 | case xcoff_stub_shared_call: | |
4706 | BFD_ASSERT (hstub->htarget->toc_section != NULL); | |
4707 | /* The first instruction in the glink code needs to be | |
4708 | cooked to hold the correct offset in the toc. It will | |
85649ec8 | 4709 | be filled by xcoff_stub_create_relocations. */ |
2d23f965 CC |
4710 | for (i = 0; i < bfd_xcoff_stub_shared_call_size(output_bfd) / 4; i++) |
4711 | bfd_put_32 (stub_bfd, | |
4712 | (bfd_vma) bfd_xcoff_stub_shared_call_code(output_bfd, i), | |
4713 | &p[4 * i]); | |
4714 | ||
4715 | break; | |
4716 | ||
4717 | default: | |
4718 | BFD_FAIL (); | |
4719 | return false; | |
4720 | } | |
4721 | return true; | |
4722 | } | |
4723 | ||
4724 | /* Check relocations and adds stubs if needed. */ | |
4725 | ||
4726 | bool | |
4727 | bfd_xcoff_size_stubs (struct bfd_link_info *info) | |
4728 | { | |
4729 | struct xcoff_link_hash_table *htab = xcoff_hash_table (info); | |
4730 | struct xcoff_loader_info *ldinfo = &(htab->ldinfo); | |
4731 | ||
4732 | while (1) | |
4733 | { | |
4734 | bfd *input_bfd; | |
4735 | bool stub_changed = false; | |
4736 | ||
4737 | for (input_bfd = info->input_bfds; | |
4738 | input_bfd != NULL; | |
4739 | input_bfd = input_bfd->link.next) | |
4740 | { | |
4741 | asection *section; | |
4742 | bfd_size_type symcount; | |
4743 | bfd_size_type symesz; | |
4744 | bfd_byte *esyms; | |
4745 | ||
4746 | if (bfd_get_flavour (input_bfd) != bfd_target_xcoff_flavour) | |
4747 | continue; | |
4748 | ||
4749 | symcount = obj_raw_syment_count (input_bfd); | |
4750 | if (!symcount) | |
4751 | continue; | |
4752 | symesz = bfd_coff_symesz (input_bfd); | |
4753 | esyms = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
4754 | ||
4755 | /* Walk over each section attached to the input bfd. */ | |
4756 | for (section = input_bfd->sections; | |
4757 | section != NULL; | |
4758 | section = section->next) | |
4759 | { | |
4760 | struct internal_reloc *internal_relocs; | |
4761 | struct internal_reloc *irel, *irelend; | |
4762 | ||
4763 | /* If there aren't any relocs, then there's nothing more | |
4764 | to do. */ | |
4765 | if ((section->flags & SEC_RELOC) == 0 | |
4766 | || section->reloc_count == 0) | |
4767 | continue; | |
4768 | ||
4769 | /* If this section is a link-once section that will be | |
4770 | discarded, then don't create any stubs. */ | |
4771 | if (section->output_section == NULL | |
4772 | || section->output_section->owner != info->output_bfd) | |
4773 | continue; | |
4774 | ||
4775 | /* This section have been garbage-collected. */ | |
4776 | if (section->gc_mark == 0) | |
4777 | continue; | |
4778 | ||
4779 | /* Read in the relocs. */ | |
4780 | internal_relocs = (xcoff_read_internal_relocs | |
4781 | (input_bfd, section, true, NULL, | |
4782 | false, NULL)); | |
4783 | if (internal_relocs == NULL) | |
4784 | goto error_ret; | |
4785 | ||
4786 | irel = internal_relocs; | |
4787 | irelend = irel + section->reloc_count; | |
4788 | for (; irel < irelend; irel++) | |
4789 | { | |
4790 | enum xcoff_stub_type stub_type; | |
4791 | struct xcoff_link_hash_entry *hsym = NULL; | |
4792 | struct xcoff_link_hash_entry *hstub_csect = NULL; | |
4793 | struct xcoff_stub_hash_entry *hstub = NULL; | |
4794 | asection *sym_sec; | |
4795 | bfd_vma sym_value; | |
4796 | bfd_vma destination; | |
4797 | char *stub_name; | |
4798 | ||
4799 | if (irel->r_symndx == -1) | |
4800 | continue; | |
4801 | ||
4802 | switch (irel->r_type) | |
4803 | { | |
4804 | default: | |
4805 | continue; | |
4806 | ||
4807 | case R_BR: | |
4808 | case R_RBR: | |
4809 | break; | |
4810 | } | |
4811 | ||
4812 | /* Retrieve targeted symbol address */ | |
4813 | hsym = obj_xcoff_sym_hashes (input_bfd)[irel->r_symndx]; | |
4814 | if (hsym == NULL) | |
4815 | { | |
4816 | struct internal_syment sym; | |
4817 | if ((long unsigned int)irel->r_symndx > symcount) | |
4818 | { | |
4819 | BFD_FAIL(); | |
4820 | goto error_ret; | |
4821 | } | |
4822 | ||
4823 | bfd_coff_swap_sym_in (input_bfd, | |
4824 | (void *) esyms + irel->r_symndx * symesz, | |
4825 | (void *) &sym); | |
4826 | ||
4827 | sym_sec = xcoff_data (input_bfd)->csects[irel->r_symndx]; | |
4828 | sym_value = sym.n_value - sym_sec->vma; | |
4829 | ||
4830 | destination = (sym_value | |
4831 | + sym_sec->output_section->vma | |
4832 | + sym_sec->output_offset); | |
4833 | } | |
4834 | else if (hsym->root.type == bfd_link_hash_defined | |
4835 | || hsym->root.type == bfd_link_hash_defweak) | |
4836 | { | |
4837 | sym_sec = hsym->root.u.def.section; | |
4838 | sym_value = hsym->root.u.def.value; | |
4839 | destination = (sym_value | |
4840 | + sym_sec->output_section->vma | |
4841 | + sym_sec->output_offset); | |
4842 | } | |
4843 | else | |
4844 | { | |
4845 | bfd_set_error (bfd_error_bad_value); | |
4846 | goto error_ret; | |
4847 | } | |
4848 | ||
4849 | /* I'm not sure how to handle this case. Skip it for now. */ | |
4850 | if (bfd_is_abs_section (sym_sec)) | |
4851 | continue; | |
4852 | ||
4853 | stub_type = bfd_xcoff_type_of_stub (section, irel, destination, hsym); | |
4854 | ||
4855 | if (stub_type == xcoff_stub_none) | |
4856 | continue; | |
4857 | ||
4858 | /* Get a stub csect in ranch. */ | |
4859 | hstub_csect = xcoff_stub_get_csect_in_range (section, info, true); | |
4860 | if (!hstub_csect) | |
4861 | { | |
4862 | /* xgettext:c-format */ | |
4863 | _bfd_error_handler (_("%pB: Unable to find a stub csect in range" | |
4864 | "of relocation at %#" PRIx64 " targeting" | |
4865 | "'%s'"), | |
85649ec8 | 4866 | section->owner, (uint64_t) irel->r_vaddr, |
2d23f965 CC |
4867 | hsym->root.root.string); |
4868 | goto error_ret; | |
4869 | } | |
4870 | ||
4871 | /* Get the name of this stub. */ | |
4872 | stub_name = xcoff_stub_name (hsym, hstub_csect); | |
4873 | if (!stub_name) | |
4874 | goto error_ret; | |
4875 | ||
4876 | hstub = xcoff_stub_hash_lookup (&(xcoff_hash_table (info)->stub_hash_table), | |
4877 | stub_name, false, false); | |
4878 | ||
4879 | /* A stub entry inside the in range csect already exists. */ | |
4880 | if (hstub != NULL) | |
4881 | { | |
4882 | free (stub_name); | |
4883 | continue; | |
4884 | } | |
4885 | ||
4886 | stub_changed = true; | |
4887 | ||
4888 | hstub = xcoff_add_stub (stub_name, hstub_csect, hsym, info, stub_type); | |
4889 | if (hstub == NULL) | |
4890 | { | |
2d23f965 CC |
4891 | /* xgettext:c-format */ |
4892 | _bfd_error_handler (_("%pB: Cannot create stub entry '%s'"), | |
4893 | section->owner, stub_name); | |
85649ec8 | 4894 | free (stub_name); |
2d23f965 CC |
4895 | goto error_ret; |
4896 | } | |
4897 | ||
4898 | hstub->stub_type = stub_type; | |
4899 | hstub->hcsect = hstub_csect; | |
4900 | hstub->target_section = sym_sec; | |
4901 | free (stub_name); | |
4902 | } | |
4903 | } | |
4904 | } | |
4905 | ||
4906 | if (!stub_changed) | |
4907 | break; | |
4908 | ||
4909 | /* Update the size of the loader. */ | |
4910 | if (xcoff_hash_table (info)->loader_section | |
4911 | && !xcoff_size_loader_section (ldinfo)) | |
4912 | goto error_ret; | |
4913 | ||
4914 | /* Ask the linker to do its stuff. */ | |
4915 | (*htab->params->layout_sections_again) (); | |
4916 | ||
4917 | } | |
4918 | return true; | |
4919 | ||
4920 | error_ret: | |
4921 | bfd_set_error (bfd_error_bad_value); | |
4922 | return false; | |
4923 | } | |
4924 | ||
4925 | bool | |
4926 | bfd_xcoff_build_stubs (struct bfd_link_info *info) | |
4927 | { | |
4928 | struct xcoff_link_hash_table *htab = xcoff_hash_table (info); | |
4929 | asection *stub_sec; | |
4930 | ||
4931 | for (stub_sec = htab->params->stub_bfd->sections; | |
4932 | stub_sec != NULL; | |
4933 | stub_sec = stub_sec->next) | |
4934 | { | |
4935 | bfd_size_type size; | |
4936 | ||
4937 | /* Allocate memory to hold the linker stubs. */ | |
4938 | size = stub_sec->size; | |
4939 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, size); | |
4940 | if (stub_sec->contents == NULL && size != 0) | |
4941 | return false; | |
4942 | ||
4943 | } | |
4944 | ||
4945 | /* Build the stubs as directed by the stub hash table. */ | |
4946 | bfd_hash_traverse (&htab->stub_hash_table, xcoff_build_one_stub, info); | |
4947 | return true; | |
4948 | } | |
4949 | ||
4950 | /* Create and apply relocations made by a stub entry. */ | |
4951 | static bool | |
4952 | xcoff_stub_create_relocations (struct bfd_hash_entry *bh, void * inf) | |
4953 | { | |
4954 | struct xcoff_stub_hash_entry *hstub | |
4955 | = (struct xcoff_stub_hash_entry *) bh; | |
4956 | struct xcoff_final_link_info *flinfo | |
4957 | = (struct xcoff_final_link_info *) inf; | |
4958 | ||
4959 | bfd *output_bfd; | |
4960 | struct internal_reloc *irel; | |
4961 | struct xcoff_link_hash_entry **rel_hash; | |
4962 | struct xcoff_link_hash_entry *htarget; | |
4963 | asection *sec, *osec; | |
4964 | bfd_vma off; | |
4965 | bfd_byte *p; | |
4966 | ||
4967 | htarget = hstub->htarget; | |
4968 | sec = hstub->hcsect->root.u.def.section; | |
4969 | osec = sec->output_section; | |
4970 | ||
4971 | irel = (flinfo->section_info[osec->target_index].relocs | |
4972 | + osec->reloc_count); | |
4973 | rel_hash = (flinfo->section_info[osec->target_index].rel_hashes | |
4974 | + osec->output_section->reloc_count); | |
4975 | *rel_hash = NULL; | |
4976 | output_bfd = flinfo->output_bfd; | |
4977 | ||
4978 | irel->r_symndx = htarget->indx; | |
4979 | irel->r_vaddr = (osec->vma | |
4980 | + sec->output_offset | |
4981 | + hstub->hcsect->root.u.def.value | |
4982 | + hstub->stub_offset); | |
4983 | ||
4984 | p = (sec->contents | |
4985 | + hstub->stub_offset); | |
4986 | ||
4987 | switch (hstub->stub_type) | |
4988 | { | |
4989 | default: | |
4990 | BFD_FAIL (); | |
4991 | return false; | |
4992 | ||
4993 | /* The first instruction of this stub code need | |
85649ec8 | 4994 | a R_TOC relocation. */ |
2d23f965 CC |
4995 | case xcoff_stub_indirect_call: |
4996 | case xcoff_stub_shared_call: | |
4997 | irel->r_size = 0xf; | |
4998 | irel->r_type = R_TOC; | |
4999 | ||
5000 | /* Retrieve the toc offset of the target which is | |
5001 | a function descriptor. */ | |
5002 | BFD_ASSERT (htarget->toc_section != NULL); | |
5003 | if ((htarget->flags & XCOFF_SET_TOC) != 0) | |
5004 | off = hstub->htarget->u.toc_offset; | |
5005 | else | |
5006 | off = (htarget->toc_section->output_section->vma | |
5007 | + htarget->toc_section->output_offset | |
5008 | - xcoff_data (flinfo->output_bfd)->toc); | |
5009 | if ((off & 0xffff) != off) | |
5010 | { | |
5011 | _bfd_error_handler | |
5012 | (_("TOC overflow during stub generation; try -mminimal-toc " | |
5013 | "when compiling")); | |
5014 | bfd_set_error (bfd_error_file_too_big); | |
5015 | return false; | |
5016 | } | |
5017 | ||
5018 | bfd_put_16 (output_bfd, off & 0xffff, p+2); | |
5019 | break; | |
5020 | } | |
5021 | ||
5022 | ++osec->reloc_count; | |
5023 | return true; | |
5024 | } | |
5025 | ||
5026 | ||
b3d1832c RS |
5027 | /* Return the section that defines H. Return null if no section does. */ |
5028 | ||
5029 | static asection * | |
5030 | xcoff_symbol_section (struct xcoff_link_hash_entry *h) | |
5031 | { | |
5032 | switch (h->root.type) | |
5033 | { | |
5034 | case bfd_link_hash_defined: | |
5035 | case bfd_link_hash_defweak: | |
5036 | return h->root.u.def.section; | |
5037 | ||
5038 | case bfd_link_hash_common: | |
5039 | return h->root.u.c.p->section; | |
5040 | ||
5041 | default: | |
5042 | return NULL; | |
5043 | } | |
5044 | } | |
5045 | ||
5046 | /* Add a .loader relocation for input relocation IREL. If the loader | |
5047 | relocation should be against an output section, HSEC points to the | |
5048 | input section that IREL is against, otherwise HSEC is null. H is the | |
5049 | symbol that IREL is against, or null if it isn't against a global symbol. | |
5050 | REFERENCE_BFD is the bfd to use in error messages about the relocation. */ | |
5051 | ||
0a1b45a2 | 5052 | static bool |
baf9bed3 | 5053 | xcoff_create_ldrel (bfd *output_bfd, struct xcoff_final_link_info *flinfo, |
b3d1832c RS |
5054 | asection *output_section, bfd *reference_bfd, |
5055 | struct internal_reloc *irel, asection *hsec, | |
5056 | struct xcoff_link_hash_entry *h) | |
5057 | { | |
5058 | struct internal_ldrel ldrel; | |
5059 | ||
5060 | ldrel.l_vaddr = irel->r_vaddr; | |
5061 | if (hsec != NULL) | |
5062 | { | |
5063 | const char *secname; | |
5064 | ||
5065 | secname = hsec->output_section->name; | |
5066 | if (strcmp (secname, ".text") == 0) | |
5067 | ldrel.l_symndx = 0; | |
5068 | else if (strcmp (secname, ".data") == 0) | |
5069 | ldrel.l_symndx = 1; | |
5070 | else if (strcmp (secname, ".bss") == 0) | |
5071 | ldrel.l_symndx = 2; | |
1b2cb8e2 CC |
5072 | else if (strcmp (secname, ".tdata") == 0) |
5073 | ldrel.l_symndx = -1; | |
5074 | else if (strcmp (secname, ".tbss") == 0) | |
5075 | ldrel.l_symndx = -2; | |
b3d1832c RS |
5076 | else |
5077 | { | |
4eca0228 | 5078 | _bfd_error_handler |
695344c0 | 5079 | /* xgettext:c-format */ |
871b3ab2 | 5080 | (_("%pB: loader reloc in unrecognized section `%s'"), |
b3d1832c RS |
5081 | reference_bfd, secname); |
5082 | bfd_set_error (bfd_error_nonrepresentable_section); | |
0a1b45a2 | 5083 | return false; |
b3d1832c RS |
5084 | } |
5085 | } | |
5086 | else if (h != NULL) | |
5087 | { | |
5088 | if (h->ldindx < 0) | |
5089 | { | |
4eca0228 | 5090 | _bfd_error_handler |
695344c0 | 5091 | /* xgettext:c-format */ |
871b3ab2 | 5092 | (_("%pB: `%s' in loader reloc but not loader sym"), |
b3d1832c RS |
5093 | reference_bfd, h->root.root.string); |
5094 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 5095 | return false; |
b3d1832c RS |
5096 | } |
5097 | ldrel.l_symndx = h->ldindx; | |
5098 | } | |
5099 | else | |
5100 | ldrel.l_symndx = -(bfd_size_type) 1; | |
5101 | ||
5102 | ldrel.l_rtype = (irel->r_size << 8) | irel->r_type; | |
5103 | ldrel.l_rsecnm = output_section->target_index; | |
baf9bed3 | 5104 | if (xcoff_hash_table (flinfo->info)->textro |
b3d1832c RS |
5105 | && strcmp (output_section->name, ".text") == 0) |
5106 | { | |
4eca0228 | 5107 | _bfd_error_handler |
695344c0 | 5108 | /* xgettext:c-format */ |
871b3ab2 | 5109 | (_("%pB: loader reloc in read-only section %pA"), |
b3d1832c RS |
5110 | reference_bfd, output_section); |
5111 | bfd_set_error (bfd_error_invalid_operation); | |
0a1b45a2 | 5112 | return false; |
b3d1832c | 5113 | } |
baf9bed3 JB |
5114 | bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, flinfo->ldrel); |
5115 | flinfo->ldrel += bfd_xcoff_ldrelsz (output_bfd); | |
0a1b45a2 | 5116 | return true; |
b3d1832c RS |
5117 | } |
5118 | ||
116c20d2 NC |
5119 | /* Link an input file into the linker output file. This function |
5120 | handles all the sections and relocations of the input file at once. */ | |
252b5132 | 5121 | |
0a1b45a2 | 5122 | static bool |
baf9bed3 | 5123 | xcoff_link_input_bfd (struct xcoff_final_link_info *flinfo, |
116c20d2 NC |
5124 | bfd *input_bfd) |
5125 | { | |
5126 | bfd *output_bfd; | |
5127 | const char *strings; | |
5128 | bfd_size_type syment_base; | |
5129 | unsigned int n_tmask; | |
5130 | unsigned int n_btshft; | |
0a1b45a2 | 5131 | bool copy, hash; |
116c20d2 NC |
5132 | bfd_size_type isymesz; |
5133 | bfd_size_type osymesz; | |
5134 | bfd_size_type linesz; | |
5135 | bfd_byte *esym; | |
5136 | bfd_byte *esym_end; | |
5137 | struct xcoff_link_hash_entry **sym_hash; | |
5138 | struct internal_syment *isymp; | |
5139 | asection **csectpp; | |
3df13c4a | 5140 | unsigned int *lineno_counts; |
e450936a | 5141 | long *debug_index; |
116c20d2 NC |
5142 | long *indexp; |
5143 | unsigned long output_index; | |
5144 | bfd_byte *outsym; | |
5145 | unsigned int incls; | |
5146 | asection *oline; | |
0a1b45a2 | 5147 | bool keep_syms; |
116c20d2 | 5148 | asection *o; |
252b5132 | 5149 | |
116c20d2 NC |
5150 | /* We can just skip DYNAMIC files, unless this is a static link. */ |
5151 | if ((input_bfd->flags & DYNAMIC) != 0 | |
baf9bed3 | 5152 | && ! flinfo->info->static_link) |
0a1b45a2 | 5153 | return true; |
252b5132 | 5154 | |
116c20d2 | 5155 | /* Move all the symbols to the output file. */ |
baf9bed3 | 5156 | output_bfd = flinfo->output_bfd; |
116c20d2 NC |
5157 | strings = NULL; |
5158 | syment_base = obj_raw_syment_count (output_bfd); | |
5159 | isymesz = bfd_coff_symesz (input_bfd); | |
5160 | osymesz = bfd_coff_symesz (output_bfd); | |
5161 | linesz = bfd_coff_linesz (input_bfd); | |
5162 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
252b5132 | 5163 | |
116c20d2 NC |
5164 | n_tmask = coff_data (input_bfd)->local_n_tmask; |
5165 | n_btshft = coff_data (input_bfd)->local_n_btshft; | |
252b5132 | 5166 | |
116c20d2 NC |
5167 | /* Define macros so that ISFCN, et. al., macros work correctly. */ |
5168 | #define N_TMASK n_tmask | |
5169 | #define N_BTSHFT n_btshft | |
252b5132 | 5170 | |
0a1b45a2 | 5171 | copy = false; |
baf9bed3 | 5172 | if (! flinfo->info->keep_memory) |
0a1b45a2 AM |
5173 | copy = true; |
5174 | hash = true; | |
b560e2ac | 5175 | if (flinfo->info->traditional_format) |
0a1b45a2 | 5176 | hash = false; |
252b5132 | 5177 | |
116c20d2 | 5178 | if (! _bfd_coff_get_external_symbols (input_bfd)) |
0a1b45a2 | 5179 | return false; |
116c20d2 | 5180 | |
e450936a RS |
5181 | /* Make one pass over the symbols and assign indices to symbols that |
5182 | we have decided to keep. Also use create .loader symbol information | |
5183 | and update information in hash table entries. */ | |
116c20d2 NC |
5184 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); |
5185 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
5186 | sym_hash = obj_xcoff_sym_hashes (input_bfd); | |
5187 | csectpp = xcoff_data (input_bfd)->csects; | |
5188 | debug_index = xcoff_data (input_bfd)->debug_indices; | |
baf9bed3 JB |
5189 | isymp = flinfo->internal_syms; |
5190 | indexp = flinfo->sym_indices; | |
116c20d2 | 5191 | output_index = syment_base; |
116c20d2 | 5192 | while (esym < esym_end) |
252b5132 | 5193 | { |
116c20d2 NC |
5194 | union internal_auxent aux; |
5195 | int smtyp = 0; | |
116c20d2 | 5196 | int add; |
252b5132 | 5197 | |
116c20d2 | 5198 | bfd_coff_swap_sym_in (input_bfd, (void *) esym, (void *) isymp); |
b34976b6 | 5199 | |
8602d4fe RS |
5200 | /* Read in the csect information, if any. */ |
5201 | if (CSECT_SYM_P (isymp->n_sclass)) | |
116c20d2 NC |
5202 | { |
5203 | BFD_ASSERT (isymp->n_numaux > 0); | |
5204 | bfd_coff_swap_aux_in (input_bfd, | |
5205 | (void *) (esym + isymesz * isymp->n_numaux), | |
5206 | isymp->n_type, isymp->n_sclass, | |
5207 | isymp->n_numaux - 1, isymp->n_numaux, | |
5208 | (void *) &aux); | |
b34976b6 | 5209 | |
116c20d2 NC |
5210 | smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); |
5211 | } | |
b34976b6 | 5212 | |
116c20d2 NC |
5213 | /* If this symbol is in the .loader section, swap out the |
5214 | .loader symbol information. If this is an external symbol | |
5215 | reference to a defined symbol, though, then wait until we get | |
5216 | to the definition. */ | |
8602d4fe | 5217 | if (EXTERN_SYM_P (isymp->n_sclass) |
116c20d2 NC |
5218 | && *sym_hash != NULL |
5219 | && (*sym_hash)->ldsym != NULL | |
5b49f6dc | 5220 | && xcoff_final_definition_p (input_bfd, *sym_hash, *csectpp)) |
116c20d2 NC |
5221 | { |
5222 | struct xcoff_link_hash_entry *h; | |
5223 | struct internal_ldsym *ldsym; | |
9e7b37b3 | 5224 | |
116c20d2 NC |
5225 | h = *sym_hash; |
5226 | ldsym = h->ldsym; | |
e450936a | 5227 | if (isymp->n_scnum > 0) |
116c20d2 NC |
5228 | { |
5229 | ldsym->l_scnum = (*csectpp)->output_section->target_index; | |
e450936a | 5230 | ldsym->l_value = (isymp->n_value |
116c20d2 NC |
5231 | + (*csectpp)->output_section->vma |
5232 | + (*csectpp)->output_offset | |
5233 | - (*csectpp)->vma); | |
252b5132 | 5234 | } |
116c20d2 | 5235 | else |
252b5132 | 5236 | { |
e450936a RS |
5237 | ldsym->l_scnum = isymp->n_scnum; |
5238 | ldsym->l_value = isymp->n_value; | |
252b5132 | 5239 | } |
252b5132 | 5240 | |
116c20d2 NC |
5241 | ldsym->l_smtype = smtyp; |
5242 | if (((h->flags & XCOFF_DEF_REGULAR) == 0 | |
5243 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) | |
5244 | || (h->flags & XCOFF_IMPORT) != 0) | |
5245 | ldsym->l_smtype |= L_IMPORT; | |
5246 | if (((h->flags & XCOFF_DEF_REGULAR) != 0 | |
5247 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) | |
5248 | || (h->flags & XCOFF_EXPORT) != 0) | |
5249 | ldsym->l_smtype |= L_EXPORT; | |
5250 | if ((h->flags & XCOFF_ENTRY) != 0) | |
5251 | ldsym->l_smtype |= L_ENTRY; | |
8602d4fe RS |
5252 | if (isymp->n_sclass == C_AIX_WEAKEXT) |
5253 | ldsym->l_smtype |= L_WEAK; | |
dc810e39 | 5254 | |
116c20d2 NC |
5255 | ldsym->l_smclas = aux.x_csect.x_smclas; |
5256 | ||
5257 | if (ldsym->l_ifile == (bfd_size_type) -1) | |
5258 | ldsym->l_ifile = 0; | |
5259 | else if (ldsym->l_ifile == 0) | |
252b5132 | 5260 | { |
116c20d2 NC |
5261 | if ((ldsym->l_smtype & L_IMPORT) == 0) |
5262 | ldsym->l_ifile = 0; | |
5263 | else | |
252b5132 | 5264 | { |
116c20d2 | 5265 | bfd *impbfd; |
252b5132 | 5266 | |
116c20d2 NC |
5267 | if (h->root.type == bfd_link_hash_defined |
5268 | || h->root.type == bfd_link_hash_defweak) | |
5269 | impbfd = h->root.u.def.section->owner; | |
5270 | else if (h->root.type == bfd_link_hash_undefined | |
5271 | || h->root.type == bfd_link_hash_undefweak) | |
5272 | impbfd = h->root.u.undef.abfd; | |
5273 | else | |
5274 | impbfd = NULL; | |
5275 | ||
5276 | if (impbfd == NULL) | |
5277 | ldsym->l_ifile = 0; | |
5278 | else | |
252b5132 | 5279 | { |
baf9bed3 | 5280 | BFD_ASSERT (impbfd->xvec == flinfo->output_bfd->xvec); |
116c20d2 | 5281 | ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; |
252b5132 RH |
5282 | } |
5283 | } | |
116c20d2 NC |
5284 | } |
5285 | ||
5286 | ldsym->l_parm = 0; | |
5287 | ||
5288 | BFD_ASSERT (h->ldindx >= 0); | |
baf9bed3 JB |
5289 | bfd_xcoff_swap_ldsym_out (flinfo->output_bfd, ldsym, |
5290 | (flinfo->ldsym | |
116c20d2 | 5291 | + ((h->ldindx - 3) |
baf9bed3 | 5292 | * bfd_xcoff_ldsymsz (flinfo->output_bfd)))); |
116c20d2 NC |
5293 | h->ldsym = NULL; |
5294 | ||
5295 | /* Fill in snentry now that we know the target_index. */ | |
5296 | if ((h->flags & XCOFF_ENTRY) != 0 | |
5297 | && (h->root.type == bfd_link_hash_defined | |
5298 | || h->root.type == bfd_link_hash_defweak)) | |
5299 | { | |
5300 | xcoff_data (output_bfd)->snentry = | |
5301 | h->root.u.def.section->output_section->target_index; | |
252b5132 RH |
5302 | } |
5303 | } | |
5304 | ||
e450936a RS |
5305 | add = 1 + isymp->n_numaux; |
5306 | ||
5307 | if (*debug_index == -2) | |
5308 | /* We've decided to strip this symbol. */ | |
5309 | *indexp = -1; | |
5310 | else | |
116c20d2 | 5311 | { |
e450936a RS |
5312 | /* Assign the next unused index to this symbol. */ |
5313 | *indexp = output_index; | |
dc810e39 | 5314 | |
8602d4fe | 5315 | if (EXTERN_SYM_P (isymp->n_sclass)) |
e450936a RS |
5316 | { |
5317 | BFD_ASSERT (*sym_hash != NULL); | |
5318 | (*sym_hash)->indx = output_index; | |
5319 | } | |
dc810e39 | 5320 | |
e450936a RS |
5321 | /* If this is a symbol in the TOC which we may have merged |
5322 | (class XMC_TC), remember the symbol index of the TOC | |
5323 | symbol. */ | |
5324 | if (isymp->n_sclass == C_HIDEXT | |
5325 | && aux.x_csect.x_smclas == XMC_TC | |
5326 | && *sym_hash != NULL) | |
5327 | { | |
5328 | BFD_ASSERT (((*sym_hash)->flags & XCOFF_SET_TOC) == 0); | |
5329 | BFD_ASSERT ((*sym_hash)->toc_section != NULL); | |
5330 | (*sym_hash)->u.toc_indx = output_index; | |
5331 | } | |
252b5132 | 5332 | |
e450936a | 5333 | output_index += add; |
116c20d2 | 5334 | } |
252b5132 | 5335 | |
e450936a RS |
5336 | esym += add * isymesz; |
5337 | isymp += add; | |
5338 | csectpp += add; | |
5339 | sym_hash += add; | |
5340 | debug_index += add; | |
5341 | ++indexp; | |
5342 | for (--add; add > 0; --add) | |
5343 | *indexp++ = -1; | |
5344 | } | |
5345 | ||
5346 | /* Now write out the symbols that we decided to keep. */ | |
5347 | ||
5348 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
5349 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
54e2dbe0 | 5350 | sym_hash = obj_xcoff_sym_hashes (input_bfd); |
baf9bed3 JB |
5351 | isymp = flinfo->internal_syms; |
5352 | indexp = flinfo->sym_indices; | |
e450936a | 5353 | csectpp = xcoff_data (input_bfd)->csects; |
3df13c4a | 5354 | lineno_counts = xcoff_data (input_bfd)->lineno_counts; |
e450936a | 5355 | debug_index = xcoff_data (input_bfd)->debug_indices; |
baf9bed3 | 5356 | outsym = flinfo->outsyms; |
e450936a RS |
5357 | incls = 0; |
5358 | oline = NULL; | |
5359 | while (esym < esym_end) | |
5360 | { | |
5361 | int add; | |
5362 | ||
5363 | add = 1 + isymp->n_numaux; | |
5364 | ||
5365 | if (*indexp < 0) | |
5366 | esym += add * isymesz; | |
5367 | else | |
252b5132 | 5368 | { |
e450936a RS |
5369 | struct internal_syment isym; |
5370 | int i; | |
116c20d2 | 5371 | |
e450936a RS |
5372 | /* Adjust the symbol in order to output it. */ |
5373 | isym = *isymp; | |
116c20d2 NC |
5374 | if (isym._n._n_n._n_zeroes == 0 |
5375 | && isym._n._n_n._n_offset != 0) | |
252b5132 | 5376 | { |
116c20d2 NC |
5377 | /* This symbol has a long name. Enter it in the string |
5378 | table we are building. If *debug_index != -1, the | |
5379 | name has already been entered in the .debug section. */ | |
e450936a | 5380 | if (*debug_index >= 0) |
116c20d2 NC |
5381 | isym._n._n_n._n_offset = *debug_index; |
5382 | else | |
5383 | { | |
5384 | const char *name; | |
5385 | bfd_size_type indx; | |
5386 | ||
5387 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, NULL); | |
5388 | ||
5389 | if (name == NULL) | |
0a1b45a2 | 5390 | return false; |
baf9bed3 | 5391 | indx = _bfd_stringtab_add (flinfo->strtab, name, hash, copy); |
116c20d2 | 5392 | if (indx == (bfd_size_type) -1) |
0a1b45a2 | 5393 | return false; |
116c20d2 | 5394 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; |
252b5132 RH |
5395 | } |
5396 | } | |
116c20d2 | 5397 | |
54e2dbe0 RS |
5398 | /* Make __rtinit C_HIDEXT rather than C_EXT. This avoids |
5399 | multiple definition problems when linking a shared object | |
5400 | statically. (The native linker doesn't enter __rtinit into | |
5401 | the normal table at all, but having a local symbol can make | |
5402 | the objdump output easier to read.) */ | |
5403 | if (isym.n_sclass == C_EXT | |
5404 | && *sym_hash | |
5405 | && ((*sym_hash)->flags & XCOFF_RTINIT) != 0) | |
5406 | isym.n_sclass = C_HIDEXT; | |
5407 | ||
116c20d2 NC |
5408 | /* The value of a C_FILE symbol is the symbol index of the |
5409 | next C_FILE symbol. The value of the last C_FILE symbol | |
5410 | is -1. We try to get this right, below, just before we | |
5411 | write the symbols out, but in the general case we may | |
5412 | have to write the symbol out twice. */ | |
5413 | if (isym.n_sclass == C_FILE) | |
5414 | { | |
baf9bed3 JB |
5415 | if (flinfo->last_file_index != -1 |
5416 | && flinfo->last_file.n_value != (bfd_vma) *indexp) | |
116c20d2 NC |
5417 | { |
5418 | /* We must correct the value of the last C_FILE entry. */ | |
baf9bed3 JB |
5419 | flinfo->last_file.n_value = *indexp; |
5420 | if ((bfd_size_type) flinfo->last_file_index >= syment_base) | |
116c20d2 NC |
5421 | { |
5422 | /* The last C_FILE symbol is in this input file. */ | |
5423 | bfd_coff_swap_sym_out (output_bfd, | |
baf9bed3 JB |
5424 | (void *) &flinfo->last_file, |
5425 | (void *) (flinfo->outsyms | |
5426 | + ((flinfo->last_file_index | |
116c20d2 NC |
5427 | - syment_base) |
5428 | * osymesz))); | |
5429 | } | |
5430 | else | |
5431 | { | |
5432 | /* We have already written out the last C_FILE | |
5433 | symbol. We need to write it out again. We | |
5434 | borrow *outsym temporarily. */ | |
5435 | file_ptr pos; | |
252b5132 | 5436 | |
116c20d2 | 5437 | bfd_coff_swap_sym_out (output_bfd, |
baf9bed3 | 5438 | (void *) &flinfo->last_file, |
116c20d2 | 5439 | (void *) outsym); |
beb1bf64 | 5440 | |
116c20d2 | 5441 | pos = obj_sym_filepos (output_bfd); |
baf9bed3 | 5442 | pos += flinfo->last_file_index * osymesz; |
116c20d2 | 5443 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
226f9f4f | 5444 | || (bfd_write (outsym, osymesz, output_bfd) |
116c20d2 | 5445 | != osymesz)) |
0a1b45a2 | 5446 | return false; |
116c20d2 NC |
5447 | } |
5448 | } | |
252b5132 | 5449 | |
baf9bed3 JB |
5450 | flinfo->last_file_index = *indexp; |
5451 | flinfo->last_file = isym; | |
116c20d2 | 5452 | } |
252b5132 | 5453 | |
116c20d2 NC |
5454 | /* The value of a C_BINCL or C_EINCL symbol is a file offset |
5455 | into the line numbers. We update the symbol values when | |
5456 | we handle the line numbers. */ | |
5457 | if (isym.n_sclass == C_BINCL | |
5458 | || isym.n_sclass == C_EINCL) | |
5459 | { | |
baf9bed3 | 5460 | isym.n_value = flinfo->line_filepos; |
116c20d2 NC |
5461 | ++incls; |
5462 | } | |
e450936a RS |
5463 | /* The value of a C_BSTAT symbol is the symbol table |
5464 | index of the containing csect. */ | |
5465 | else if (isym.n_sclass == C_BSTAT) | |
116c20d2 | 5466 | { |
116c20d2 | 5467 | bfd_vma indx; |
252b5132 | 5468 | |
116c20d2 NC |
5469 | indx = isym.n_value; |
5470 | if (indx < obj_raw_syment_count (input_bfd)) | |
5471 | { | |
5472 | long symindx; | |
252b5132 | 5473 | |
baf9bed3 | 5474 | symindx = flinfo->sym_indices[indx]; |
116c20d2 NC |
5475 | if (symindx < 0) |
5476 | isym.n_value = 0; | |
5477 | else | |
5478 | isym.n_value = symindx; | |
116c20d2 NC |
5479 | } |
5480 | } | |
e450936a RS |
5481 | else if (isym.n_sclass != C_ESTAT |
5482 | && isym.n_sclass != C_DECL | |
5483 | && isym.n_scnum > 0) | |
5484 | { | |
74f03a0e AM |
5485 | if (*sym_hash != NULL |
5486 | && ((*sym_hash)->root.type == bfd_link_hash_defined | |
5487 | || (*sym_hash)->root.type == bfd_link_hash_defweak) | |
5488 | && (*sym_hash)->root.u.def.section == bfd_abs_section_ptr) | |
5489 | isym.n_scnum = N_ABS; | |
5490 | else | |
5491 | isym.n_scnum = (*csectpp)->output_section->target_index; | |
e450936a RS |
5492 | isym.n_value += ((*csectpp)->output_section->vma |
5493 | + (*csectpp)->output_offset | |
5494 | - (*csectpp)->vma); | |
5495 | } | |
5496 | ||
a8bc481f | 5497 | /* Update visibility. */ |
1ffce3f8 AM |
5498 | if (*sym_hash) |
5499 | { | |
5500 | isym.n_type &= ~SYM_V_MASK; | |
5501 | isym.n_type |= (*sym_hash)->visibility; | |
5502 | } | |
a8bc481f | 5503 | |
e450936a RS |
5504 | /* Output the symbol. */ |
5505 | bfd_coff_swap_sym_out (output_bfd, (void *) &isym, (void *) outsym); | |
dc810e39 | 5506 | |
116c20d2 NC |
5507 | esym += isymesz; |
5508 | outsym += osymesz; | |
dc810e39 | 5509 | |
116c20d2 NC |
5510 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) |
5511 | { | |
5512 | union internal_auxent aux; | |
dc810e39 | 5513 | |
116c20d2 NC |
5514 | bfd_coff_swap_aux_in (input_bfd, (void *) esym, isymp->n_type, |
5515 | isymp->n_sclass, i, isymp->n_numaux, | |
5516 | (void *) &aux); | |
252b5132 | 5517 | |
116c20d2 NC |
5518 | if (isymp->n_sclass == C_FILE) |
5519 | { | |
5520 | /* This is the file name (or some comment put in by | |
5521 | the compiler). If it is long, we must put it in | |
5522 | the string table. */ | |
e86fc4a5 CC |
5523 | if (aux.x_file.x_n.x_n.x_zeroes == 0 |
5524 | && aux.x_file.x_n.x_n.x_offset != 0) | |
116c20d2 NC |
5525 | { |
5526 | const char *filename; | |
5527 | bfd_size_type indx; | |
dc810e39 | 5528 | |
e86fc4a5 | 5529 | BFD_ASSERT (aux.x_file.x_n.x_n.x_offset |
116c20d2 NC |
5530 | >= STRING_SIZE_SIZE); |
5531 | if (strings == NULL) | |
5532 | { | |
5533 | strings = _bfd_coff_read_string_table (input_bfd); | |
5534 | if (strings == NULL) | |
0a1b45a2 | 5535 | return false; |
116c20d2 | 5536 | } |
e86fc4a5 | 5537 | if ((bfd_size_type) aux.x_file.x_n.x_n.x_offset >= obj_coff_strings_len (input_bfd)) |
5a3f568b NC |
5538 | filename = _("<corrupt>"); |
5539 | else | |
e86fc4a5 | 5540 | filename = strings + aux.x_file.x_n.x_n.x_offset; |
baf9bed3 | 5541 | indx = _bfd_stringtab_add (flinfo->strtab, filename, |
116c20d2 NC |
5542 | hash, copy); |
5543 | if (indx == (bfd_size_type) -1) | |
0a1b45a2 | 5544 | return false; |
e86fc4a5 | 5545 | aux.x_file.x_n.x_n.x_offset = STRING_SIZE_SIZE + indx; |
116c20d2 NC |
5546 | } |
5547 | } | |
8602d4fe | 5548 | else if (CSECT_SYM_P (isymp->n_sclass) |
116c20d2 NC |
5549 | && i + 1 == isymp->n_numaux) |
5550 | { | |
dc810e39 | 5551 | |
116c20d2 NC |
5552 | /* We don't support type checking. I don't know if |
5553 | anybody does. */ | |
5554 | aux.x_csect.x_parmhash = 0; | |
5555 | /* I don't think anybody uses these fields, but we'd | |
5556 | better clobber them just in case. */ | |
5557 | aux.x_csect.x_stab = 0; | |
5558 | aux.x_csect.x_snstab = 0; | |
dc810e39 | 5559 | |
116c20d2 NC |
5560 | if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_LD) |
5561 | { | |
5562 | unsigned long indx; | |
252b5132 | 5563 | |
a2c7ca15 | 5564 | indx = aux.x_csect.x_scnlen.u64; |
116c20d2 NC |
5565 | if (indx < obj_raw_syment_count (input_bfd)) |
5566 | { | |
5567 | long symindx; | |
252b5132 | 5568 | |
baf9bed3 | 5569 | symindx = flinfo->sym_indices[indx]; |
116c20d2 NC |
5570 | if (symindx < 0) |
5571 | { | |
a2c7ca15 | 5572 | aux.x_csect.x_scnlen.u64 = 0; |
116c20d2 NC |
5573 | } |
5574 | else | |
5575 | { | |
a2c7ca15 | 5576 | aux.x_csect.x_scnlen.u64 = symindx; |
116c20d2 NC |
5577 | } |
5578 | } | |
5579 | } | |
5580 | } | |
5581 | else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) | |
5582 | { | |
5583 | unsigned long indx; | |
252b5132 | 5584 | |
116c20d2 NC |
5585 | if (ISFCN (isymp->n_type) |
5586 | || ISTAG (isymp->n_sclass) | |
5587 | || isymp->n_sclass == C_BLOCK | |
5588 | || isymp->n_sclass == C_FCN) | |
5589 | { | |
a2c7ca15 | 5590 | indx = aux.x_sym.x_fcnary.x_fcn.x_endndx.u32; |
116c20d2 NC |
5591 | if (indx > 0 |
5592 | && indx < obj_raw_syment_count (input_bfd)) | |
5593 | { | |
5594 | /* We look forward through the symbol for | |
5595 | the index of the next symbol we are going | |
5596 | to include. I don't know if this is | |
5597 | entirely right. */ | |
baf9bed3 | 5598 | while (flinfo->sym_indices[indx] < 0 |
116c20d2 NC |
5599 | && indx < obj_raw_syment_count (input_bfd)) |
5600 | ++indx; | |
5601 | if (indx >= obj_raw_syment_count (input_bfd)) | |
5602 | indx = output_index; | |
5603 | else | |
baf9bed3 | 5604 | indx = flinfo->sym_indices[indx]; |
a2c7ca15 | 5605 | aux.x_sym.x_fcnary.x_fcn.x_endndx.u32 = indx; |
252b5132 | 5606 | |
116c20d2 NC |
5607 | } |
5608 | } | |
252b5132 | 5609 | |
a2c7ca15 | 5610 | indx = aux.x_sym.x_tagndx.u32; |
116c20d2 NC |
5611 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) |
5612 | { | |
5613 | long symindx; | |
252b5132 | 5614 | |
baf9bed3 | 5615 | symindx = flinfo->sym_indices[indx]; |
116c20d2 | 5616 | if (symindx < 0) |
a2c7ca15 | 5617 | aux.x_sym.x_tagndx.u32 = 0; |
116c20d2 | 5618 | else |
a2c7ca15 | 5619 | aux.x_sym.x_tagndx.u32 = symindx; |
116c20d2 | 5620 | } |
252b5132 | 5621 | |
116c20d2 | 5622 | } |
252b5132 | 5623 | |
116c20d2 NC |
5624 | /* Copy over the line numbers, unless we are stripping |
5625 | them. We do this on a symbol by symbol basis in | |
5626 | order to more easily handle garbage collection. */ | |
8602d4fe | 5627 | if (CSECT_SYM_P (isymp->n_sclass) |
116c20d2 NC |
5628 | && i == 0 |
5629 | && isymp->n_numaux > 1 | |
5630 | && ISFCN (isymp->n_type) | |
5631 | && aux.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0) | |
5632 | { | |
3df13c4a | 5633 | if (*lineno_counts == 0) |
116c20d2 NC |
5634 | aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0; |
5635 | else | |
5636 | { | |
5637 | asection *enclosing; | |
5638 | unsigned int enc_count; | |
5639 | bfd_signed_vma linoff; | |
5640 | struct internal_lineno lin; | |
3df13c4a RS |
5641 | bfd_byte *linp; |
5642 | bfd_byte *linpend; | |
5643 | bfd_vma offset; | |
5644 | file_ptr pos; | |
5645 | bfd_size_type amt; | |
252b5132 | 5646 | |
3df13c4a RS |
5647 | /* Read in the enclosing section's line-number |
5648 | information, if we haven't already. */ | |
116c20d2 NC |
5649 | o = *csectpp; |
5650 | enclosing = xcoff_section_data (abfd, o)->enclosing; | |
5651 | enc_count = xcoff_section_data (abfd, o)->lineno_count; | |
5652 | if (oline != enclosing) | |
5653 | { | |
3df13c4a RS |
5654 | pos = enclosing->line_filepos; |
5655 | amt = linesz * enc_count; | |
116c20d2 | 5656 | if (bfd_seek (input_bfd, pos, SEEK_SET) != 0 |
226f9f4f | 5657 | || (bfd_read (flinfo->linenos, amt, input_bfd) |
116c20d2 | 5658 | != amt)) |
0a1b45a2 | 5659 | return false; |
116c20d2 NC |
5660 | oline = enclosing; |
5661 | } | |
beb1bf64 | 5662 | |
3df13c4a RS |
5663 | /* Copy across the first entry, adjusting its |
5664 | symbol index. */ | |
116c20d2 NC |
5665 | linoff = (aux.x_sym.x_fcnary.x_fcn.x_lnnoptr |
5666 | - enclosing->line_filepos); | |
baf9bed3 | 5667 | linp = flinfo->linenos + linoff; |
3df13c4a RS |
5668 | bfd_coff_swap_lineno_in (input_bfd, linp, &lin); |
5669 | lin.l_addr.l_symndx = *indexp; | |
5670 | bfd_coff_swap_lineno_out (output_bfd, &lin, linp); | |
3df13c4a RS |
5671 | |
5672 | /* Copy the other entries, adjusting their addresses. */ | |
5673 | linpend = linp + *lineno_counts * linesz; | |
5674 | offset = (o->output_section->vma | |
5675 | + o->output_offset | |
5676 | - o->vma); | |
8707bb87 | 5677 | for (linp += linesz; linp < linpend; linp += linesz) |
116c20d2 | 5678 | { |
3df13c4a RS |
5679 | bfd_coff_swap_lineno_in (input_bfd, linp, &lin); |
5680 | lin.l_addr.l_paddr += offset; | |
5681 | bfd_coff_swap_lineno_out (output_bfd, &lin, linp); | |
5682 | } | |
252b5132 | 5683 | |
3df13c4a RS |
5684 | /* Write out the entries we've just processed. */ |
5685 | pos = (o->output_section->line_filepos | |
116c20d2 | 5686 | + o->output_section->lineno_count * linesz); |
3df13c4a RS |
5687 | amt = linesz * *lineno_counts; |
5688 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
226f9f4f AM |
5689 | || bfd_write (flinfo->linenos + linoff, amt, |
5690 | output_bfd) != amt) | |
0a1b45a2 | 5691 | return false; |
3df13c4a | 5692 | o->output_section->lineno_count += *lineno_counts; |
252b5132 | 5693 | |
3df13c4a RS |
5694 | /* Record the offset of the symbol's line numbers |
5695 | in the output file. */ | |
5696 | aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = pos; | |
252b5132 | 5697 | |
3df13c4a RS |
5698 | if (incls > 0) |
5699 | { | |
5700 | struct internal_syment *iisp, *iispend; | |
5701 | long *iindp; | |
5702 | bfd_byte *oos; | |
5703 | bfd_vma range_start, range_end; | |
5704 | int iiadd; | |
5705 | ||
5706 | /* Update any C_BINCL or C_EINCL symbols | |
5707 | that refer to a line number in the | |
5708 | range we just output. */ | |
baf9bed3 | 5709 | iisp = flinfo->internal_syms; |
3df13c4a | 5710 | iispend = iisp + obj_raw_syment_count (input_bfd); |
baf9bed3 JB |
5711 | iindp = flinfo->sym_indices; |
5712 | oos = flinfo->outsyms; | |
3df13c4a RS |
5713 | range_start = enclosing->line_filepos + linoff; |
5714 | range_end = range_start + *lineno_counts * linesz; | |
5715 | while (iisp < iispend) | |
116c20d2 | 5716 | { |
3df13c4a RS |
5717 | if (*iindp >= 0 |
5718 | && (iisp->n_sclass == C_BINCL | |
5719 | || iisp->n_sclass == C_EINCL) | |
5720 | && iisp->n_value >= range_start | |
5721 | && iisp->n_value < range_end) | |
116c20d2 | 5722 | { |
3df13c4a RS |
5723 | struct internal_syment iis; |
5724 | ||
5725 | bfd_coff_swap_sym_in (output_bfd, oos, &iis); | |
5726 | iis.n_value = (iisp->n_value | |
5727 | - range_start | |
5728 | + pos); | |
5729 | bfd_coff_swap_sym_out (output_bfd, | |
5730 | &iis, oos); | |
5731 | --incls; | |
116c20d2 | 5732 | } |
3df13c4a RS |
5733 | |
5734 | iiadd = 1 + iisp->n_numaux; | |
5735 | if (*iindp >= 0) | |
5736 | oos += iiadd * osymesz; | |
5737 | iisp += iiadd; | |
5738 | iindp += iiadd; | |
116c20d2 NC |
5739 | } |
5740 | } | |
252b5132 RH |
5741 | } |
5742 | } | |
252b5132 | 5743 | |
116c20d2 NC |
5744 | bfd_coff_swap_aux_out (output_bfd, (void *) &aux, isymp->n_type, |
5745 | isymp->n_sclass, i, isymp->n_numaux, | |
5746 | (void *) outsym); | |
5747 | outsym += osymesz; | |
5748 | esym += isymesz; | |
dc810e39 | 5749 | } |
252b5132 RH |
5750 | } |
5751 | ||
54e2dbe0 | 5752 | sym_hash += add; |
116c20d2 NC |
5753 | indexp += add; |
5754 | isymp += add; | |
5755 | csectpp += add; | |
3df13c4a | 5756 | lineno_counts += add; |
e450936a | 5757 | debug_index += add; |
116c20d2 | 5758 | } |
252b5132 | 5759 | |
116c20d2 NC |
5760 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE |
5761 | symbol will be the first symbol in the next input file. In the | |
5762 | normal case, this will save us from writing out the C_FILE symbol | |
5763 | again. */ | |
baf9bed3 JB |
5764 | if (flinfo->last_file_index != -1 |
5765 | && (bfd_size_type) flinfo->last_file_index >= syment_base) | |
116c20d2 | 5766 | { |
baf9bed3 JB |
5767 | flinfo->last_file.n_value = output_index; |
5768 | bfd_coff_swap_sym_out (output_bfd, (void *) &flinfo->last_file, | |
5769 | (void *) (flinfo->outsyms | |
07d6d2b8 AM |
5770 | + ((flinfo->last_file_index - syment_base) |
5771 | * osymesz))); | |
116c20d2 | 5772 | } |
492055e6 | 5773 | |
116c20d2 | 5774 | /* Write the modified symbols to the output file. */ |
baf9bed3 | 5775 | if (outsym > flinfo->outsyms) |
116c20d2 NC |
5776 | { |
5777 | file_ptr pos = obj_sym_filepos (output_bfd) + syment_base * osymesz; | |
baf9bed3 | 5778 | bfd_size_type amt = outsym - flinfo->outsyms; |
116c20d2 | 5779 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
226f9f4f | 5780 | || bfd_write (flinfo->outsyms, amt, output_bfd) != amt) |
0a1b45a2 | 5781 | return false; |
fbc4fff4 | 5782 | |
116c20d2 | 5783 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) |
baf9bed3 | 5784 | + (outsym - flinfo->outsyms) / osymesz) |
116c20d2 | 5785 | == output_index); |
fbc4fff4 | 5786 | |
116c20d2 NC |
5787 | obj_raw_syment_count (output_bfd) = output_index; |
5788 | } | |
fbc4fff4 | 5789 | |
116c20d2 NC |
5790 | /* Don't let the linker relocation routines discard the symbols. */ |
5791 | keep_syms = obj_coff_keep_syms (input_bfd); | |
0a1b45a2 | 5792 | obj_coff_keep_syms (input_bfd) = true; |
252b5132 | 5793 | |
116c20d2 NC |
5794 | /* Relocate the contents of each section. */ |
5795 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
5796 | { | |
5797 | bfd_byte *contents; | |
252b5132 | 5798 | |
116c20d2 NC |
5799 | if (! o->linker_mark) |
5800 | /* This section was omitted from the link. */ | |
5801 | continue; | |
252b5132 | 5802 | |
116c20d2 NC |
5803 | if ((o->flags & SEC_HAS_CONTENTS) == 0 |
5804 | || o->size == 0 | |
5805 | || (o->flags & SEC_IN_MEMORY) != 0) | |
5806 | continue; | |
dc810e39 | 5807 | |
116c20d2 NC |
5808 | /* We have set filepos correctly for the sections we created to |
5809 | represent csects, so bfd_get_section_contents should work. */ | |
5810 | if (coff_section_data (input_bfd, o) != NULL | |
5811 | && coff_section_data (input_bfd, o)->contents != NULL) | |
5812 | contents = coff_section_data (input_bfd, o)->contents; | |
5813 | else | |
5814 | { | |
5815 | bfd_size_type sz = o->rawsize ? o->rawsize : o->size; | |
baf9bed3 | 5816 | if (!bfd_get_section_contents (input_bfd, o, flinfo->contents, 0, sz)) |
72913831 | 5817 | goto err_out; |
baf9bed3 | 5818 | contents = flinfo->contents; |
252b5132 RH |
5819 | } |
5820 | ||
116c20d2 | 5821 | if ((o->flags & SEC_RELOC) != 0) |
252b5132 | 5822 | { |
116c20d2 NC |
5823 | int target_index; |
5824 | struct internal_reloc *internal_relocs; | |
5825 | struct internal_reloc *irel; | |
5826 | bfd_vma offset; | |
5827 | struct internal_reloc *irelend; | |
5828 | struct xcoff_link_hash_entry **rel_hash; | |
5829 | long r_symndx; | |
252b5132 | 5830 | |
116c20d2 NC |
5831 | /* Read in the relocs. */ |
5832 | target_index = o->output_section->target_index; | |
5833 | internal_relocs = (xcoff_read_internal_relocs | |
0a1b45a2 AM |
5834 | (input_bfd, o, false, flinfo->external_relocs, |
5835 | true, | |
baf9bed3 | 5836 | (flinfo->section_info[target_index].relocs |
116c20d2 NC |
5837 | + o->output_section->reloc_count))); |
5838 | if (internal_relocs == NULL) | |
72913831 | 5839 | goto err_out; |
beb1bf64 | 5840 | |
116c20d2 NC |
5841 | /* Call processor specific code to relocate the section |
5842 | contents. */ | |
baf9bed3 | 5843 | if (! bfd_coff_relocate_section (output_bfd, flinfo->info, |
116c20d2 NC |
5844 | input_bfd, o, |
5845 | contents, | |
5846 | internal_relocs, | |
baf9bed3 | 5847 | flinfo->internal_syms, |
116c20d2 | 5848 | xcoff_data (input_bfd)->csects)) |
72913831 | 5849 | goto err_out; |
252b5132 | 5850 | |
116c20d2 NC |
5851 | offset = o->output_section->vma + o->output_offset - o->vma; |
5852 | irel = internal_relocs; | |
5853 | irelend = irel + o->reloc_count; | |
baf9bed3 | 5854 | rel_hash = (flinfo->section_info[target_index].rel_hashes |
116c20d2 NC |
5855 | + o->output_section->reloc_count); |
5856 | for (; irel < irelend; irel++, rel_hash++) | |
5857 | { | |
5858 | struct xcoff_link_hash_entry *h = NULL; | |
252b5132 | 5859 | |
116c20d2 | 5860 | *rel_hash = NULL; |
252b5132 | 5861 | |
116c20d2 | 5862 | /* Adjust the reloc address and symbol index. */ |
252b5132 | 5863 | |
116c20d2 | 5864 | r_symndx = irel->r_symndx; |
beb1bf64 | 5865 | |
116c20d2 NC |
5866 | if (r_symndx == -1) |
5867 | h = NULL; | |
5868 | else | |
5869 | h = obj_xcoff_sym_hashes (input_bfd)[r_symndx]; | |
252b5132 | 5870 | |
2d23f965 CC |
5871 | /* In case of a R_BR or R_RBR, change the target if |
5872 | a stub is being called. */ | |
5873 | if (h != NULL | |
5874 | && (irel->r_type == R_BR | |
5875 | || irel->r_type == R_RBR)) | |
5876 | { | |
5877 | asection *sym_sec; | |
5878 | bfd_vma dest; | |
5879 | struct xcoff_stub_hash_entry *hstub = NULL; | |
5880 | enum xcoff_stub_type stub_type; | |
5881 | ||
5882 | if (h->root.type == bfd_link_hash_defined | |
5883 | || h->root.type == bfd_link_hash_defweak) | |
5884 | { | |
5885 | sym_sec = h->root.u.def.section; | |
5886 | dest = (h->root.u.def.value | |
5887 | + sym_sec->output_section->vma | |
5888 | + sym_sec->output_offset); | |
5889 | } | |
5890 | else | |
5891 | { | |
5892 | BFD_FAIL (); | |
5893 | goto err_out; | |
5894 | } | |
5895 | ||
5896 | stub_type = bfd_xcoff_type_of_stub (o, irel, dest, h); | |
5897 | if (stub_type != xcoff_stub_none) | |
5898 | { | |
5899 | hstub = bfd_xcoff_get_stub_entry (o, h, flinfo->info); | |
5900 | if (hstub == NULL) | |
5901 | goto err_out; | |
5902 | ||
5903 | h = hstub->hcsect; | |
5904 | } | |
5905 | ||
5906 | } | |
5907 | ||
5908 | irel->r_vaddr += offset; | |
5909 | ||
baf9bed3 | 5910 | if (r_symndx != -1 && flinfo->info->strip != strip_all) |
252b5132 | 5911 | { |
2d23f965 | 5912 | |
116c20d2 NC |
5913 | if (h != NULL |
5914 | && h->smclas != XMC_TD | |
5915 | && (irel->r_type == R_TOC | |
5916 | || irel->r_type == R_GL | |
5917 | || irel->r_type == R_TCL | |
5918 | || irel->r_type == R_TRL | |
5919 | || irel->r_type == R_TRLA)) | |
252b5132 | 5920 | { |
116c20d2 NC |
5921 | /* This is a TOC relative reloc with a symbol |
5922 | attached. The symbol should be the one which | |
5923 | this reloc is for. We want to make this | |
5924 | reloc against the TOC address of the symbol, | |
5925 | not the symbol itself. */ | |
5926 | BFD_ASSERT (h->toc_section != NULL); | |
5927 | BFD_ASSERT ((h->flags & XCOFF_SET_TOC) == 0); | |
5928 | if (h->u.toc_indx != -1) | |
5929 | irel->r_symndx = h->u.toc_indx; | |
5930 | else | |
5931 | { | |
5932 | struct xcoff_toc_rel_hash *n; | |
5933 | struct xcoff_link_section_info *si; | |
986f0783 | 5934 | size_t amt; |
116c20d2 NC |
5935 | |
5936 | amt = sizeof (* n); | |
baf9bed3 | 5937 | n = bfd_alloc (flinfo->output_bfd, amt); |
116c20d2 | 5938 | if (n == NULL) |
72913831 | 5939 | goto err_out; |
baf9bed3 | 5940 | si = flinfo->section_info + target_index; |
116c20d2 NC |
5941 | n->next = si->toc_rel_hashes; |
5942 | n->h = h; | |
5943 | n->rel = irel; | |
5944 | si->toc_rel_hashes = n; | |
5945 | } | |
252b5132 | 5946 | } |
116c20d2 | 5947 | else if (h != NULL) |
252b5132 | 5948 | { |
116c20d2 NC |
5949 | /* This is a global symbol. */ |
5950 | if (h->indx >= 0) | |
5951 | irel->r_symndx = h->indx; | |
5952 | else | |
5953 | { | |
5954 | /* This symbol is being written at the end | |
5955 | of the file, and we do not yet know the | |
5956 | symbol index. We save the pointer to the | |
5957 | hash table entry in the rel_hash list. | |
5958 | We set the indx field to -2 to indicate | |
5959 | that this symbol must not be stripped. */ | |
5960 | *rel_hash = h; | |
5961 | h->indx = -2; | |
5962 | } | |
252b5132 | 5963 | } |
116c20d2 NC |
5964 | else |
5965 | { | |
5966 | long indx; | |
252b5132 | 5967 | |
baf9bed3 | 5968 | indx = flinfo->sym_indices[r_symndx]; |
252b5132 | 5969 | |
116c20d2 NC |
5970 | if (indx == -1) |
5971 | { | |
5972 | struct internal_syment *is; | |
252b5132 | 5973 | |
116c20d2 NC |
5974 | /* Relocations against a TC0 TOC anchor are |
5975 | automatically transformed to be against | |
5976 | the TOC anchor in the output file. */ | |
baf9bed3 | 5977 | is = flinfo->internal_syms + r_symndx; |
116c20d2 NC |
5978 | if (is->n_sclass == C_HIDEXT |
5979 | && is->n_numaux > 0) | |
5980 | { | |
5981 | void * auxptr; | |
5982 | union internal_auxent aux; | |
252b5132 | 5983 | |
116c20d2 NC |
5984 | auxptr = ((void *) |
5985 | (((bfd_byte *) | |
5986 | obj_coff_external_syms (input_bfd)) | |
5987 | + ((r_symndx + is->n_numaux) | |
5988 | * isymesz))); | |
5989 | bfd_coff_swap_aux_in (input_bfd, auxptr, | |
5990 | is->n_type, is->n_sclass, | |
5991 | is->n_numaux - 1, | |
5992 | is->n_numaux, | |
5993 | (void *) &aux); | |
5994 | if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_SD | |
5995 | && aux.x_csect.x_smclas == XMC_TC0) | |
baf9bed3 | 5996 | indx = flinfo->toc_symindx; |
116c20d2 NC |
5997 | } |
5998 | } | |
252b5132 | 5999 | |
116c20d2 NC |
6000 | if (indx != -1) |
6001 | irel->r_symndx = indx; | |
6002 | else | |
6003 | { | |
252b5132 | 6004 | |
116c20d2 | 6005 | struct internal_syment *is; |
252b5132 | 6006 | |
116c20d2 NC |
6007 | const char *name; |
6008 | char buf[SYMNMLEN + 1]; | |
252b5132 | 6009 | |
116c20d2 NC |
6010 | /* This reloc is against a symbol we are |
6011 | stripping. It would be possible to handle | |
6012 | this case, but I don't think it's worth it. */ | |
baf9bed3 | 6013 | is = flinfo->internal_syms + r_symndx; |
beb1bf64 | 6014 | |
07d6d2b8 AM |
6015 | if (is->n_sclass != C_DWARF) |
6016 | { | |
6017 | name = (_bfd_coff_internal_syment_name | |
6018 | (input_bfd, is, buf)); | |
252b5132 | 6019 | |
07d6d2b8 | 6020 | if (name == NULL) |
72913831 | 6021 | goto err_out; |
252b5132 | 6022 | |
1a72702b AM |
6023 | (*flinfo->info->callbacks->unattached_reloc) |
6024 | (flinfo->info, name, | |
6025 | input_bfd, o, irel->r_vaddr); | |
07d6d2b8 | 6026 | } |
116c20d2 NC |
6027 | } |
6028 | } | |
252b5132 | 6029 | } |
252b5132 | 6030 | |
5ccfed9b | 6031 | if ((o->flags & SEC_DEBUGGING) == 0 |
c5df7e44 | 6032 | && xcoff_need_ldrel_p (flinfo->info, irel, h, o)) |
252b5132 | 6033 | { |
b3d1832c | 6034 | asection *sec; |
252b5132 | 6035 | |
b3d1832c RS |
6036 | if (r_symndx == -1) |
6037 | sec = NULL; | |
6038 | else if (h == NULL) | |
6039 | sec = xcoff_data (input_bfd)->csects[r_symndx]; | |
116c20d2 | 6040 | else |
b3d1832c | 6041 | sec = xcoff_symbol_section (h); |
baf9bed3 | 6042 | if (!xcoff_create_ldrel (output_bfd, flinfo, |
b3d1832c RS |
6043 | o->output_section, input_bfd, |
6044 | irel, sec, h)) | |
72913831 | 6045 | goto err_out; |
116c20d2 NC |
6046 | } |
6047 | } | |
252b5132 | 6048 | |
116c20d2 NC |
6049 | o->output_section->reloc_count += o->reloc_count; |
6050 | } | |
252b5132 | 6051 | |
116c20d2 NC |
6052 | /* Write out the modified section contents. */ |
6053 | if (! bfd_set_section_contents (output_bfd, o->output_section, | |
6054 | contents, (file_ptr) o->output_offset, | |
6055 | o->size)) | |
72913831 | 6056 | goto err_out; |
116c20d2 | 6057 | } |
252b5132 | 6058 | |
116c20d2 | 6059 | obj_coff_keep_syms (input_bfd) = keep_syms; |
252b5132 | 6060 | |
baf9bed3 | 6061 | if (! flinfo->info->keep_memory) |
116c20d2 NC |
6062 | { |
6063 | if (! _bfd_coff_free_symbols (input_bfd)) | |
0a1b45a2 | 6064 | return false; |
116c20d2 | 6065 | } |
252b5132 | 6066 | |
0a1b45a2 | 6067 | return true; |
72913831 AM |
6068 | |
6069 | err_out: | |
6070 | obj_coff_keep_syms (input_bfd) = keep_syms; | |
0a1b45a2 | 6071 | return false; |
116c20d2 | 6072 | } |
252b5132 | 6073 | |
116c20d2 NC |
6074 | #undef N_TMASK |
6075 | #undef N_BTSHFT | |
252b5132 | 6076 | |
116c20d2 | 6077 | /* Sort relocs by VMA. This is called via qsort. */ |
252b5132 | 6078 | |
116c20d2 NC |
6079 | static int |
6080 | xcoff_sort_relocs (const void * p1, const void * p2) | |
6081 | { | |
6082 | const struct internal_reloc *r1 = (const struct internal_reloc *) p1; | |
6083 | const struct internal_reloc *r2 = (const struct internal_reloc *) p2; | |
252b5132 | 6084 | |
116c20d2 NC |
6085 | if (r1->r_vaddr > r2->r_vaddr) |
6086 | return 1; | |
6087 | else if (r1->r_vaddr < r2->r_vaddr) | |
6088 | return -1; | |
6089 | else | |
6090 | return 0; | |
6091 | } | |
252b5132 | 6092 | |
47dfb2ca RS |
6093 | /* Return true if section SEC is a TOC section. */ |
6094 | ||
0a1b45a2 | 6095 | static inline bool |
47dfb2ca RS |
6096 | xcoff_toc_section_p (asection *sec) |
6097 | { | |
6098 | const char *name; | |
6099 | ||
6100 | name = sec->name; | |
6101 | if (name[0] == '.' && name[1] == 't') | |
6102 | { | |
6103 | if (name[2] == 'c') | |
6104 | { | |
6105 | if (name[3] == '0' && name[4] == 0) | |
0a1b45a2 | 6106 | return true; |
47dfb2ca | 6107 | if (name[3] == 0) |
0a1b45a2 | 6108 | return true; |
47dfb2ca RS |
6109 | } |
6110 | if (name[2] == 'd' && name[3] == 0) | |
0a1b45a2 | 6111 | return true; |
47dfb2ca | 6112 | } |
0a1b45a2 | 6113 | return false; |
47dfb2ca RS |
6114 | } |
6115 | ||
6116 | /* See if the link requires a TOC (it usually does!). If so, find a | |
6117 | good place to put the TOC anchor csect, and write out the associated | |
6118 | symbol. */ | |
6119 | ||
0a1b45a2 | 6120 | static bool |
baf9bed3 | 6121 | xcoff_find_tc0 (bfd *output_bfd, struct xcoff_final_link_info *flinfo) |
47dfb2ca RS |
6122 | { |
6123 | bfd_vma toc_start, toc_end, start, end, best_address; | |
6124 | asection *sec; | |
6125 | bfd *input_bfd; | |
6126 | int section_index; | |
6127 | struct internal_syment irsym; | |
6128 | union internal_auxent iraux; | |
6129 | file_ptr pos; | |
6130 | size_t size; | |
6131 | ||
6132 | /* Set [TOC_START, TOC_END) to the range of the TOC. Record the | |
6133 | index of a csect at the beginning of the TOC. */ | |
6134 | toc_start = ~(bfd_vma) 0; | |
6135 | toc_end = 0; | |
6136 | section_index = -1; | |
baf9bed3 | 6137 | for (input_bfd = flinfo->info->input_bfds; |
47dfb2ca | 6138 | input_bfd != NULL; |
c72f2fb2 | 6139 | input_bfd = input_bfd->link.next) |
47dfb2ca | 6140 | for (sec = input_bfd->sections; sec != NULL; sec = sec->next) |
8ba4f8f6 | 6141 | if (sec->gc_mark != 0 && xcoff_toc_section_p (sec)) |
47dfb2ca RS |
6142 | { |
6143 | start = sec->output_section->vma + sec->output_offset; | |
6144 | if (toc_start > start) | |
6145 | { | |
6146 | toc_start = start; | |
6147 | section_index = sec->output_section->target_index; | |
6148 | } | |
6149 | ||
6150 | end = start + sec->size; | |
6151 | if (toc_end < end) | |
6152 | toc_end = end; | |
6153 | } | |
6154 | ||
6155 | /* There's no need for a TC0 symbol if we don't have a TOC. */ | |
6156 | if (toc_end < toc_start) | |
6157 | { | |
6158 | xcoff_data (output_bfd)->toc = toc_start; | |
0a1b45a2 | 6159 | return true; |
47dfb2ca RS |
6160 | } |
6161 | ||
6162 | if (toc_end - toc_start < 0x8000) | |
6163 | /* Every TOC csect can be accessed from TOC_START. */ | |
6164 | best_address = toc_start; | |
6165 | else | |
6166 | { | |
6167 | /* Find the lowest TOC csect that is still within range of TOC_END. */ | |
6168 | best_address = toc_end; | |
baf9bed3 | 6169 | for (input_bfd = flinfo->info->input_bfds; |
47dfb2ca | 6170 | input_bfd != NULL; |
c72f2fb2 | 6171 | input_bfd = input_bfd->link.next) |
47dfb2ca | 6172 | for (sec = input_bfd->sections; sec != NULL; sec = sec->next) |
8ba4f8f6 | 6173 | if (sec->gc_mark != 0 && xcoff_toc_section_p (sec)) |
47dfb2ca RS |
6174 | { |
6175 | start = sec->output_section->vma + sec->output_offset; | |
6176 | if (start < best_address | |
6177 | && start + 0x8000 >= toc_end) | |
6178 | { | |
6179 | best_address = start; | |
6180 | section_index = sec->output_section->target_index; | |
6181 | } | |
6182 | } | |
6183 | ||
6184 | /* Make sure that the start of the TOC is also within range. */ | |
6185 | if (best_address > toc_start + 0x8000) | |
6186 | { | |
4eca0228 | 6187 | _bfd_error_handler |
2dcf00ce | 6188 | (_("TOC overflow: %#" PRIx64 " > 0x10000; try -mminimal-toc " |
47dfb2ca | 6189 | "when compiling"), |
2dcf00ce | 6190 | (uint64_t) (toc_end - toc_start)); |
47dfb2ca | 6191 | bfd_set_error (bfd_error_file_too_big); |
0a1b45a2 | 6192 | return false; |
47dfb2ca RS |
6193 | } |
6194 | } | |
6195 | ||
6196 | /* Record the chosen TOC value. */ | |
baf9bed3 | 6197 | flinfo->toc_symindx = obj_raw_syment_count (output_bfd); |
47dfb2ca RS |
6198 | xcoff_data (output_bfd)->toc = best_address; |
6199 | xcoff_data (output_bfd)->sntoc = section_index; | |
6200 | ||
6201 | /* Fill out the TC0 symbol. */ | |
b560e2ac AM |
6202 | if (!bfd_xcoff_put_symbol_name (output_bfd, flinfo->info, flinfo->strtab, |
6203 | &irsym, "TOC")) | |
0a1b45a2 | 6204 | return false; |
47dfb2ca RS |
6205 | irsym.n_value = best_address; |
6206 | irsym.n_scnum = section_index; | |
6207 | irsym.n_sclass = C_HIDEXT; | |
6208 | irsym.n_type = T_NULL; | |
6209 | irsym.n_numaux = 1; | |
baf9bed3 | 6210 | bfd_coff_swap_sym_out (output_bfd, &irsym, flinfo->outsyms); |
47dfb2ca | 6211 | |
f9a6a8f0 | 6212 | /* Fill out the auxiliary csect information. */ |
47dfb2ca RS |
6213 | memset (&iraux, 0, sizeof iraux); |
6214 | iraux.x_csect.x_smtyp = XTY_SD; | |
6215 | iraux.x_csect.x_smclas = XMC_TC0; | |
a2c7ca15 | 6216 | iraux.x_csect.x_scnlen.u64 = 0; |
47dfb2ca | 6217 | bfd_coff_swap_aux_out (output_bfd, &iraux, T_NULL, C_HIDEXT, 0, 1, |
baf9bed3 | 6218 | flinfo->outsyms + bfd_coff_symesz (output_bfd)); |
47dfb2ca RS |
6219 | |
6220 | /* Write the contents to the file. */ | |
6221 | pos = obj_sym_filepos (output_bfd); | |
6222 | pos += obj_raw_syment_count (output_bfd) * bfd_coff_symesz (output_bfd); | |
6223 | size = 2 * bfd_coff_symesz (output_bfd); | |
6224 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 | |
226f9f4f | 6225 | || bfd_write (flinfo->outsyms, size, output_bfd) != size) |
0a1b45a2 | 6226 | return false; |
47dfb2ca RS |
6227 | obj_raw_syment_count (output_bfd) += 2; |
6228 | ||
0a1b45a2 | 6229 | return true; |
47dfb2ca RS |
6230 | } |
6231 | ||
116c20d2 | 6232 | /* Write out a non-XCOFF global symbol. */ |
252b5132 | 6233 | |
0a1b45a2 | 6234 | static bool |
7686d77d | 6235 | xcoff_write_global_symbol (struct bfd_hash_entry *bh, void * inf) |
116c20d2 | 6236 | { |
7686d77d | 6237 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) bh; |
baf9bed3 | 6238 | struct xcoff_final_link_info *flinfo = (struct xcoff_final_link_info *) inf; |
116c20d2 NC |
6239 | bfd *output_bfd; |
6240 | bfd_byte *outsym; | |
6241 | struct internal_syment isym; | |
6242 | union internal_auxent aux; | |
0a1b45a2 | 6243 | bool result; |
116c20d2 NC |
6244 | file_ptr pos; |
6245 | bfd_size_type amt; | |
252b5132 | 6246 | |
baf9bed3 JB |
6247 | output_bfd = flinfo->output_bfd; |
6248 | outsym = flinfo->outsyms; | |
252b5132 | 6249 | |
116c20d2 | 6250 | if (h->root.type == bfd_link_hash_warning) |
252b5132 | 6251 | { |
116c20d2 NC |
6252 | h = (struct xcoff_link_hash_entry *) h->root.u.i.link; |
6253 | if (h->root.type == bfd_link_hash_new) | |
0a1b45a2 | 6254 | return true; |
252b5132 RH |
6255 | } |
6256 | ||
116c20d2 | 6257 | /* If this symbol was garbage collected, just skip it. */ |
baf9bed3 | 6258 | if (xcoff_hash_table (flinfo->info)->gc |
116c20d2 | 6259 | && (h->flags & XCOFF_MARK) == 0) |
0a1b45a2 | 6260 | return true; |
116c20d2 NC |
6261 | |
6262 | /* If we need a .loader section entry, write it out. */ | |
6263 | if (h->ldsym != NULL) | |
252b5132 | 6264 | { |
116c20d2 NC |
6265 | struct internal_ldsym *ldsym; |
6266 | bfd *impbfd; | |
252b5132 | 6267 | |
116c20d2 | 6268 | ldsym = h->ldsym; |
252b5132 | 6269 | |
116c20d2 NC |
6270 | if (h->root.type == bfd_link_hash_undefined |
6271 | || h->root.type == bfd_link_hash_undefweak) | |
6272 | { | |
252b5132 | 6273 | |
116c20d2 NC |
6274 | ldsym->l_value = 0; |
6275 | ldsym->l_scnum = N_UNDEF; | |
6276 | ldsym->l_smtype = XTY_ER; | |
6277 | impbfd = h->root.u.undef.abfd; | |
252b5132 | 6278 | |
116c20d2 NC |
6279 | } |
6280 | else if (h->root.type == bfd_link_hash_defined | |
6281 | || h->root.type == bfd_link_hash_defweak) | |
6282 | { | |
6283 | asection *sec; | |
252b5132 | 6284 | |
116c20d2 NC |
6285 | sec = h->root.u.def.section; |
6286 | ldsym->l_value = (sec->output_section->vma | |
6287 | + sec->output_offset | |
6288 | + h->root.u.def.value); | |
6289 | ldsym->l_scnum = sec->output_section->target_index; | |
6290 | ldsym->l_smtype = XTY_SD; | |
6291 | impbfd = sec->owner; | |
252b5132 | 6292 | |
dc810e39 | 6293 | } |
116c20d2 NC |
6294 | else |
6295 | abort (); | |
252b5132 | 6296 | |
116c20d2 NC |
6297 | if (((h->flags & XCOFF_DEF_REGULAR) == 0 |
6298 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) | |
6299 | || (h->flags & XCOFF_IMPORT) != 0) | |
6300 | /* Clear l_smtype | |
6301 | Import symbols are defined so the check above will make | |
6302 | the l_smtype XTY_SD. But this is not correct, it should | |
6303 | be cleared. */ | |
6304 | ldsym->l_smtype |= L_IMPORT; | |
252b5132 | 6305 | |
116c20d2 NC |
6306 | if (((h->flags & XCOFF_DEF_REGULAR) != 0 |
6307 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) | |
6308 | || (h->flags & XCOFF_EXPORT) != 0) | |
6309 | ldsym->l_smtype |= L_EXPORT; | |
252b5132 | 6310 | |
116c20d2 NC |
6311 | if ((h->flags & XCOFF_ENTRY) != 0) |
6312 | ldsym->l_smtype |= L_ENTRY; | |
6313 | ||
6314 | if ((h->flags & XCOFF_RTINIT) != 0) | |
6315 | ldsym->l_smtype = XTY_SD; | |
6316 | ||
6317 | ldsym->l_smclas = h->smclas; | |
6318 | ||
6319 | if (ldsym->l_smtype & L_IMPORT) | |
dc810e39 | 6320 | { |
116c20d2 NC |
6321 | if ((h->root.type == bfd_link_hash_defined |
6322 | || h->root.type == bfd_link_hash_defweak) | |
6323 | && (h->root.u.def.value != 0)) | |
6324 | ldsym->l_smclas = XMC_XO; | |
dc810e39 | 6325 | |
116c20d2 NC |
6326 | else if ((h->flags & (XCOFF_SYSCALL32 | XCOFF_SYSCALL64)) == |
6327 | (XCOFF_SYSCALL32 | XCOFF_SYSCALL64)) | |
6328 | ldsym->l_smclas = XMC_SV3264; | |
252b5132 | 6329 | |
116c20d2 NC |
6330 | else if (h->flags & XCOFF_SYSCALL32) |
6331 | ldsym->l_smclas = XMC_SV; | |
252b5132 | 6332 | |
116c20d2 NC |
6333 | else if (h->flags & XCOFF_SYSCALL64) |
6334 | ldsym->l_smclas = XMC_SV64; | |
6335 | } | |
6336 | ||
6337 | if (ldsym->l_ifile == -(bfd_size_type) 1) | |
6338 | { | |
6339 | ldsym->l_ifile = 0; | |
6340 | } | |
6341 | else if (ldsym->l_ifile == 0) | |
6342 | { | |
6343 | if ((ldsym->l_smtype & L_IMPORT) == 0) | |
6344 | ldsym->l_ifile = 0; | |
6345 | else if (impbfd == NULL) | |
6346 | ldsym->l_ifile = 0; | |
6347 | else | |
dc810e39 | 6348 | { |
116c20d2 NC |
6349 | BFD_ASSERT (impbfd->xvec == output_bfd->xvec); |
6350 | ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; | |
6351 | } | |
6352 | } | |
252b5132 | 6353 | |
116c20d2 | 6354 | ldsym->l_parm = 0; |
252b5132 | 6355 | |
116c20d2 | 6356 | BFD_ASSERT (h->ldindx >= 0); |
252b5132 | 6357 | |
116c20d2 | 6358 | bfd_xcoff_swap_ldsym_out (output_bfd, ldsym, |
baf9bed3 | 6359 | (flinfo->ldsym + |
116c20d2 | 6360 | (h->ldindx - 3) |
baf9bed3 | 6361 | * bfd_xcoff_ldsymsz(flinfo->output_bfd))); |
116c20d2 NC |
6362 | h->ldsym = NULL; |
6363 | } | |
252b5132 | 6364 | |
116c20d2 NC |
6365 | /* If this symbol needs global linkage code, write it out. */ |
6366 | if (h->root.type == bfd_link_hash_defined | |
6367 | && (h->root.u.def.section | |
baf9bed3 | 6368 | == xcoff_hash_table (flinfo->info)->linkage_section)) |
116c20d2 NC |
6369 | { |
6370 | bfd_byte *p; | |
6371 | bfd_vma tocoff; | |
6372 | unsigned int i; | |
252b5132 | 6373 | |
116c20d2 | 6374 | p = h->root.u.def.section->contents + h->root.u.def.value; |
252b5132 | 6375 | |
116c20d2 NC |
6376 | /* The first instruction in the global linkage code loads a |
6377 | specific TOC element. */ | |
6378 | tocoff = (h->descriptor->toc_section->output_section->vma | |
6379 | + h->descriptor->toc_section->output_offset | |
6380 | - xcoff_data (output_bfd)->toc); | |
dc810e39 | 6381 | |
116c20d2 NC |
6382 | if ((h->descriptor->flags & XCOFF_SET_TOC) != 0) |
6383 | tocoff += h->descriptor->u.toc_offset; | |
252b5132 | 6384 | |
116c20d2 | 6385 | /* The first instruction in the glink code needs to be |
de194d85 | 6386 | cooked to hold the correct offset in the toc. The |
116c20d2 NC |
6387 | rest are just output raw. */ |
6388 | bfd_put_32 (output_bfd, | |
6389 | bfd_xcoff_glink_code(output_bfd, 0) | (tocoff & 0xffff), p); | |
252b5132 | 6390 | |
116c20d2 NC |
6391 | /* Start with i == 1 to get past the first instruction done above |
6392 | The /4 is because the glink code is in bytes and we are going | |
6393 | 4 at a pop. */ | |
6394 | for (i = 1; i < bfd_xcoff_glink_code_size(output_bfd) / 4; i++) | |
6395 | bfd_put_32 (output_bfd, | |
6396 | (bfd_vma) bfd_xcoff_glink_code(output_bfd, i), | |
6397 | &p[4 * i]); | |
6398 | } | |
dc810e39 | 6399 | |
116c20d2 NC |
6400 | /* If we created a TOC entry for this symbol, write out the required |
6401 | relocs. */ | |
6402 | if ((h->flags & XCOFF_SET_TOC) != 0) | |
6403 | { | |
6404 | asection *tocsec; | |
6405 | asection *osec; | |
6406 | int oindx; | |
6407 | struct internal_reloc *irel; | |
116c20d2 NC |
6408 | struct internal_syment irsym; |
6409 | union internal_auxent iraux; | |
dc810e39 | 6410 | |
116c20d2 NC |
6411 | tocsec = h->toc_section; |
6412 | osec = tocsec->output_section; | |
6413 | oindx = osec->target_index; | |
baf9bed3 | 6414 | irel = flinfo->section_info[oindx].relocs + osec->reloc_count; |
116c20d2 NC |
6415 | irel->r_vaddr = (osec->vma |
6416 | + tocsec->output_offset | |
6417 | + h->u.toc_offset); | |
6418 | ||
6419 | if (h->indx >= 0) | |
6420 | irel->r_symndx = h->indx; | |
6421 | else | |
6422 | { | |
6423 | h->indx = -2; | |
6424 | irel->r_symndx = obj_raw_syment_count (output_bfd); | |
6425 | } | |
6426 | ||
116c20d2 NC |
6427 | /* Initialize the aux union here instead of closer to when it is |
6428 | written out below because the length of the csect depends on | |
6429 | whether the output is 32 or 64 bit. */ | |
6430 | memset (&iraux, 0, sizeof iraux); | |
6431 | iraux.x_csect.x_smtyp = XTY_SD; | |
a2c7ca15 | 6432 | /* iraux.x_csect.x_scnlen.u64 = 4 or 8, see below. */ |
116c20d2 NC |
6433 | iraux.x_csect.x_smclas = XMC_TC; |
6434 | ||
6435 | /* 32 bit uses a 32 bit R_POS to do the relocations | |
6436 | 64 bit uses a 64 bit R_POS to do the relocations | |
6437 | ||
6438 | Also needs to change the csect size : 4 for 32 bit, 8 for 64 bit | |
6439 | ||
6440 | Which one is determined by the backend. */ | |
6441 | if (bfd_xcoff_is_xcoff64 (output_bfd)) | |
6442 | { | |
6443 | irel->r_size = 63; | |
a2c7ca15 | 6444 | iraux.x_csect.x_scnlen.u64 = 8; |
116c20d2 NC |
6445 | } |
6446 | else if (bfd_xcoff_is_xcoff32 (output_bfd)) | |
6447 | { | |
6448 | irel->r_size = 31; | |
a2c7ca15 | 6449 | iraux.x_csect.x_scnlen.u64 = 4; |
116c20d2 NC |
6450 | } |
6451 | else | |
0a1b45a2 | 6452 | return false; |
116c20d2 NC |
6453 | |
6454 | irel->r_type = R_POS; | |
baf9bed3 | 6455 | flinfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; |
116c20d2 NC |
6456 | ++osec->reloc_count; |
6457 | ||
2d23f965 CC |
6458 | /* There are two kind of linker-created TOC entry. |
6459 | The ones importing their symbols from outside, made for the | |
6460 | global linkage. These symbols have XCOFF_LDREL set and only | |
6461 | requires a loader relocation on their imported symbol. | |
6462 | On the other hand, symbols without XCOFF_LDREL are TOC entries | |
6463 | of internal symbols (like function descriptors made for stubs). | |
6464 | These symbols needs a loader relocation over .data and this | |
6465 | relocation must be applied. */ | |
6466 | ||
6467 | if ((h->flags & XCOFF_LDREL) != 0 | |
6468 | && h->ldindx >= 0) | |
6469 | { | |
6470 | if (!xcoff_create_ldrel (output_bfd, flinfo, osec, | |
6471 | output_bfd, irel, NULL, h)) | |
6472 | return false; | |
6473 | } | |
6474 | else | |
6475 | { | |
6476 | bfd_byte *p; | |
6477 | bfd_vma val; | |
6478 | ||
6479 | p = tocsec->contents + h->u.toc_offset; | |
6480 | val = (h->root.u.def.value | |
6481 | + h->root.u.def.section->output_section->vma | |
6482 | + h->root.u.def.section->output_offset); | |
6483 | ||
6484 | if (bfd_xcoff_is_xcoff64 (output_bfd)) | |
6485 | bfd_put_64 (output_bfd, val, p); | |
6486 | else if (bfd_xcoff_is_xcoff32 (output_bfd)) | |
6487 | bfd_put_32 (output_bfd, val, p); | |
6488 | else | |
6489 | return false; | |
6490 | ||
6491 | if (!xcoff_create_ldrel (output_bfd, flinfo, osec, | |
6492 | output_bfd, irel, h->root.u.def.section, h)) | |
6493 | return false; | |
6494 | } | |
116c20d2 NC |
6495 | |
6496 | /* We need to emit a symbol to define a csect which holds | |
6497 | the reloc. */ | |
baf9bed3 | 6498 | if (flinfo->info->strip != strip_all) |
116c20d2 | 6499 | { |
b560e2ac AM |
6500 | result = bfd_xcoff_put_symbol_name (output_bfd, flinfo->info, |
6501 | flinfo->strtab, | |
116c20d2 NC |
6502 | &irsym, h->root.root.string); |
6503 | if (!result) | |
0a1b45a2 | 6504 | return false; |
116c20d2 NC |
6505 | |
6506 | irsym.n_value = irel->r_vaddr; | |
6507 | irsym.n_scnum = osec->target_index; | |
6508 | irsym.n_sclass = C_HIDEXT; | |
6509 | irsym.n_type = T_NULL; | |
6510 | irsym.n_numaux = 1; | |
6511 | ||
6512 | bfd_coff_swap_sym_out (output_bfd, (void *) &irsym, (void *) outsym); | |
6513 | outsym += bfd_coff_symesz (output_bfd); | |
6514 | ||
6515 | /* Note : iraux is initialized above. */ | |
6516 | bfd_coff_swap_aux_out (output_bfd, (void *) &iraux, T_NULL, C_HIDEXT, | |
6517 | 0, 1, (void *) outsym); | |
6518 | outsym += bfd_coff_auxesz (output_bfd); | |
6519 | ||
6520 | if (h->indx >= 0) | |
6521 | { | |
6522 | /* We aren't going to write out the symbols below, so we | |
6523 | need to write them out now. */ | |
6524 | pos = obj_sym_filepos (output_bfd); | |
6525 | pos += (obj_raw_syment_count (output_bfd) | |
6526 | * bfd_coff_symesz (output_bfd)); | |
baf9bed3 | 6527 | amt = outsym - flinfo->outsyms; |
116c20d2 | 6528 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
226f9f4f | 6529 | || bfd_write (flinfo->outsyms, amt, output_bfd) != amt) |
0a1b45a2 | 6530 | return false; |
116c20d2 | 6531 | obj_raw_syment_count (output_bfd) += |
baf9bed3 | 6532 | (outsym - flinfo->outsyms) / bfd_coff_symesz (output_bfd); |
116c20d2 | 6533 | |
baf9bed3 | 6534 | outsym = flinfo->outsyms; |
116c20d2 NC |
6535 | } |
6536 | } | |
6537 | } | |
6538 | ||
6539 | /* If this symbol is a specially defined function descriptor, write | |
6540 | it out. The first word is the address of the function code | |
6541 | itself, the second word is the address of the TOC, and the third | |
6542 | word is zero. | |
6543 | ||
6544 | 32 bit vs 64 bit | |
6545 | The addresses for the 32 bit will take 4 bytes and the addresses | |
6546 | for 64 bit will take 8 bytes. Similar for the relocs. This type | |
6547 | of logic was also done above to create a TOC entry in | |
6548 | xcoff_write_global_symbol. */ | |
6549 | if ((h->flags & XCOFF_DESCRIPTOR) != 0 | |
6550 | && h->root.type == bfd_link_hash_defined | |
6551 | && (h->root.u.def.section | |
baf9bed3 | 6552 | == xcoff_hash_table (flinfo->info)->descriptor_section)) |
116c20d2 NC |
6553 | { |
6554 | asection *sec; | |
6555 | asection *osec; | |
6556 | int oindx; | |
6557 | bfd_byte *p; | |
6558 | struct xcoff_link_hash_entry *hentry; | |
6559 | asection *esec; | |
6560 | struct internal_reloc *irel; | |
116c20d2 NC |
6561 | asection *tsec; |
6562 | unsigned int reloc_size, byte_size; | |
6563 | ||
6564 | if (bfd_xcoff_is_xcoff64 (output_bfd)) | |
6565 | { | |
6566 | reloc_size = 63; | |
6567 | byte_size = 8; | |
6568 | } | |
6569 | else if (bfd_xcoff_is_xcoff32 (output_bfd)) | |
6570 | { | |
6571 | reloc_size = 31; | |
6572 | byte_size = 4; | |
6573 | } | |
6574 | else | |
0a1b45a2 | 6575 | return false; |
116c20d2 NC |
6576 | |
6577 | sec = h->root.u.def.section; | |
6578 | osec = sec->output_section; | |
6579 | oindx = osec->target_index; | |
6580 | p = sec->contents + h->root.u.def.value; | |
6581 | ||
6582 | hentry = h->descriptor; | |
6583 | BFD_ASSERT (hentry != NULL | |
6584 | && (hentry->root.type == bfd_link_hash_defined | |
6585 | || hentry->root.type == bfd_link_hash_defweak)); | |
6586 | esec = hentry->root.u.def.section; | |
6587 | ||
baf9bed3 | 6588 | irel = flinfo->section_info[oindx].relocs + osec->reloc_count; |
116c20d2 NC |
6589 | irel->r_vaddr = (osec->vma |
6590 | + sec->output_offset | |
6591 | + h->root.u.def.value); | |
6592 | irel->r_symndx = esec->output_section->target_index; | |
6593 | irel->r_type = R_POS; | |
6594 | irel->r_size = reloc_size; | |
baf9bed3 | 6595 | flinfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; |
116c20d2 NC |
6596 | ++osec->reloc_count; |
6597 | ||
baf9bed3 | 6598 | if (!xcoff_create_ldrel (output_bfd, flinfo, osec, |
b3d1832c | 6599 | output_bfd, irel, esec, NULL)) |
0a1b45a2 | 6600 | return false; |
116c20d2 NC |
6601 | |
6602 | /* There are three items to write out, | |
6603 | the address of the code | |
6604 | the address of the toc anchor | |
6605 | the environment pointer. | |
6606 | We are ignoring the environment pointer. So set it to zero. */ | |
6607 | if (bfd_xcoff_is_xcoff64 (output_bfd)) | |
6608 | { | |
6609 | bfd_put_64 (output_bfd, | |
6610 | (esec->output_section->vma + esec->output_offset | |
6611 | + hentry->root.u.def.value), | |
6612 | p); | |
6613 | bfd_put_64 (output_bfd, xcoff_data (output_bfd)->toc, p + 8); | |
6614 | bfd_put_64 (output_bfd, (bfd_vma) 0, p + 16); | |
6615 | } | |
6616 | else | |
6617 | { | |
6618 | /* 32 bit backend | |
6619 | This logic was already called above so the error case where | |
6620 | the backend is neither has already been checked. */ | |
6621 | bfd_put_32 (output_bfd, | |
6622 | (esec->output_section->vma + esec->output_offset | |
6623 | + hentry->root.u.def.value), | |
6624 | p); | |
6625 | bfd_put_32 (output_bfd, xcoff_data (output_bfd)->toc, p + 4); | |
6626 | bfd_put_32 (output_bfd, (bfd_vma) 0, p + 8); | |
6627 | } | |
252b5132 | 6628 | |
116c20d2 NC |
6629 | tsec = coff_section_from_bfd_index (output_bfd, |
6630 | xcoff_data (output_bfd)->sntoc); | |
252b5132 | 6631 | |
116c20d2 NC |
6632 | ++irel; |
6633 | irel->r_vaddr = (osec->vma | |
6634 | + sec->output_offset | |
6635 | + h->root.u.def.value | |
6636 | + byte_size); | |
6637 | irel->r_symndx = tsec->output_section->target_index; | |
6638 | irel->r_type = R_POS; | |
6639 | irel->r_size = reloc_size; | |
baf9bed3 | 6640 | flinfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; |
116c20d2 | 6641 | ++osec->reloc_count; |
252b5132 | 6642 | |
baf9bed3 | 6643 | if (!xcoff_create_ldrel (output_bfd, flinfo, osec, |
b3d1832c | 6644 | output_bfd, irel, tsec, NULL)) |
0a1b45a2 | 6645 | return false; |
116c20d2 | 6646 | } |
252b5132 | 6647 | |
baf9bed3 | 6648 | if (h->indx >= 0 || flinfo->info->strip == strip_all) |
116c20d2 | 6649 | { |
baf9bed3 | 6650 | BFD_ASSERT (outsym == flinfo->outsyms); |
0a1b45a2 | 6651 | return true; |
116c20d2 | 6652 | } |
beb1bf64 | 6653 | |
116c20d2 | 6654 | if (h->indx != -2 |
baf9bed3 JB |
6655 | && (flinfo->info->strip == strip_all |
6656 | || (flinfo->info->strip == strip_some | |
6657 | && bfd_hash_lookup (flinfo->info->keep_hash, h->root.root.string, | |
0a1b45a2 | 6658 | false, false) == NULL))) |
116c20d2 | 6659 | { |
baf9bed3 | 6660 | BFD_ASSERT (outsym == flinfo->outsyms); |
0a1b45a2 | 6661 | return true; |
116c20d2 | 6662 | } |
dc810e39 | 6663 | |
116c20d2 NC |
6664 | if (h->indx != -2 |
6665 | && (h->flags & (XCOFF_REF_REGULAR | XCOFF_DEF_REGULAR)) == 0) | |
6666 | { | |
baf9bed3 | 6667 | BFD_ASSERT (outsym == flinfo->outsyms); |
0a1b45a2 | 6668 | return true; |
116c20d2 | 6669 | } |
dc810e39 | 6670 | |
116c20d2 | 6671 | memset (&aux, 0, sizeof aux); |
252b5132 | 6672 | |
116c20d2 | 6673 | h->indx = obj_raw_syment_count (output_bfd); |
dc810e39 | 6674 | |
b560e2ac AM |
6675 | result = bfd_xcoff_put_symbol_name (output_bfd, flinfo->info, flinfo->strtab, |
6676 | &isym, h->root.root.string); | |
116c20d2 | 6677 | if (!result) |
0a1b45a2 | 6678 | return false; |
dc810e39 | 6679 | |
116c20d2 NC |
6680 | if (h->root.type == bfd_link_hash_undefined |
6681 | || h->root.type == bfd_link_hash_undefweak) | |
6682 | { | |
6683 | isym.n_value = 0; | |
6684 | isym.n_scnum = N_UNDEF; | |
8602d4fe RS |
6685 | if (h->root.type == bfd_link_hash_undefweak |
6686 | && C_WEAKEXT == C_AIX_WEAKEXT) | |
6687 | isym.n_sclass = C_WEAKEXT; | |
6688 | else | |
6689 | isym.n_sclass = C_EXT; | |
116c20d2 NC |
6690 | aux.x_csect.x_smtyp = XTY_ER; |
6691 | } | |
6692 | else if ((h->root.type == bfd_link_hash_defined | |
6693 | || h->root.type == bfd_link_hash_defweak) | |
6694 | && h->smclas == XMC_XO) | |
6695 | { | |
c691de6a | 6696 | BFD_ASSERT (bfd_is_abs_symbol (&h->root)); |
116c20d2 NC |
6697 | isym.n_value = h->root.u.def.value; |
6698 | isym.n_scnum = N_UNDEF; | |
d3554ec1 | 6699 | if (h->root.type == bfd_link_hash_defweak |
8602d4fe RS |
6700 | && C_WEAKEXT == C_AIX_WEAKEXT) |
6701 | isym.n_sclass = C_WEAKEXT; | |
6702 | else | |
6703 | isym.n_sclass = C_EXT; | |
116c20d2 NC |
6704 | aux.x_csect.x_smtyp = XTY_ER; |
6705 | } | |
6706 | else if (h->root.type == bfd_link_hash_defined | |
6707 | || h->root.type == bfd_link_hash_defweak) | |
6708 | { | |
6709 | struct xcoff_link_size_list *l; | |
252b5132 | 6710 | |
116c20d2 NC |
6711 | isym.n_value = (h->root.u.def.section->output_section->vma |
6712 | + h->root.u.def.section->output_offset | |
6713 | + h->root.u.def.value); | |
6714 | if (bfd_is_abs_section (h->root.u.def.section->output_section)) | |
6715 | isym.n_scnum = N_ABS; | |
6716 | else | |
6717 | isym.n_scnum = h->root.u.def.section->output_section->target_index; | |
6718 | isym.n_sclass = C_HIDEXT; | |
6719 | aux.x_csect.x_smtyp = XTY_SD; | |
252b5132 | 6720 | |
2d23f965 CC |
6721 | /* For stub symbols, the section already has its correct size. */ |
6722 | if (h->root.u.def.section->owner == xcoff_hash_table (flinfo->info)->params->stub_bfd) | |
6723 | { | |
a2c7ca15 | 6724 | aux.x_csect.x_scnlen.u64 = h->root.u.def.section->size; |
2d23f965 CC |
6725 | } |
6726 | else if ((h->flags & XCOFF_HAS_SIZE) != 0) | |
116c20d2 | 6727 | { |
baf9bed3 | 6728 | for (l = xcoff_hash_table (flinfo->info)->size_list; |
116c20d2 NC |
6729 | l != NULL; |
6730 | l = l->next) | |
6731 | { | |
6732 | if (l->h == h) | |
6733 | { | |
a2c7ca15 | 6734 | aux.x_csect.x_scnlen.u64 = l->size; |
dc810e39 AM |
6735 | break; |
6736 | } | |
6737 | } | |
dc810e39 | 6738 | } |
252b5132 | 6739 | } |
116c20d2 NC |
6740 | else if (h->root.type == bfd_link_hash_common) |
6741 | { | |
6742 | isym.n_value = (h->root.u.c.p->section->output_section->vma | |
6743 | + h->root.u.c.p->section->output_offset); | |
6744 | isym.n_scnum = h->root.u.c.p->section->output_section->target_index; | |
6745 | isym.n_sclass = C_EXT; | |
6746 | aux.x_csect.x_smtyp = XTY_CM; | |
a2c7ca15 | 6747 | aux.x_csect.x_scnlen.u64 = h->root.u.c.size; |
116c20d2 NC |
6748 | } |
6749 | else | |
6750 | abort (); | |
6751 | ||
6752 | isym.n_type = T_NULL; | |
6753 | isym.n_numaux = 1; | |
6754 | ||
6755 | bfd_coff_swap_sym_out (output_bfd, (void *) &isym, (void *) outsym); | |
6756 | outsym += bfd_coff_symesz (output_bfd); | |
6757 | ||
6758 | aux.x_csect.x_smclas = h->smclas; | |
6759 | bfd_coff_swap_aux_out (output_bfd, (void *) &aux, T_NULL, isym.n_sclass, 0, 1, | |
6760 | (void *) outsym); | |
6761 | outsym += bfd_coff_auxesz (output_bfd); | |
6762 | ||
6763 | if ((h->root.type == bfd_link_hash_defined | |
6764 | || h->root.type == bfd_link_hash_defweak) | |
6765 | && h->smclas != XMC_XO) | |
6766 | { | |
6767 | /* We just output an SD symbol. Now output an LD symbol. */ | |
6768 | h->indx += 2; | |
252b5132 | 6769 | |
d3554ec1 | 6770 | if (h->root.type == bfd_link_hash_defweak |
8602d4fe RS |
6771 | && C_WEAKEXT == C_AIX_WEAKEXT) |
6772 | isym.n_sclass = C_WEAKEXT; | |
6773 | else | |
6774 | isym.n_sclass = C_EXT; | |
116c20d2 NC |
6775 | bfd_coff_swap_sym_out (output_bfd, (void *) &isym, (void *) outsym); |
6776 | outsym += bfd_coff_symesz (output_bfd); | |
252b5132 | 6777 | |
116c20d2 | 6778 | aux.x_csect.x_smtyp = XTY_LD; |
a2c7ca15 | 6779 | aux.x_csect.x_scnlen.u64 = obj_raw_syment_count (output_bfd); |
116c20d2 NC |
6780 | bfd_coff_swap_aux_out (output_bfd, (void *) &aux, T_NULL, C_EXT, 0, 1, |
6781 | (void *) outsym); | |
6782 | outsym += bfd_coff_auxesz (output_bfd); | |
252b5132 RH |
6783 | } |
6784 | ||
116c20d2 NC |
6785 | pos = obj_sym_filepos (output_bfd); |
6786 | pos += obj_raw_syment_count (output_bfd) * bfd_coff_symesz (output_bfd); | |
baf9bed3 | 6787 | amt = outsym - flinfo->outsyms; |
116c20d2 | 6788 | if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 |
226f9f4f | 6789 | || bfd_write (flinfo->outsyms, amt, output_bfd) != amt) |
0a1b45a2 | 6790 | return false; |
116c20d2 | 6791 | obj_raw_syment_count (output_bfd) += |
baf9bed3 | 6792 | (outsym - flinfo->outsyms) / bfd_coff_symesz (output_bfd); |
116c20d2 | 6793 | |
0a1b45a2 | 6794 | return true; |
252b5132 RH |
6795 | } |
6796 | ||
116c20d2 | 6797 | /* Handle a link order which is supposed to generate a reloc. */ |
beb1bf64 | 6798 | |
0a1b45a2 | 6799 | static bool |
116c20d2 | 6800 | xcoff_reloc_link_order (bfd *output_bfd, |
baf9bed3 | 6801 | struct xcoff_final_link_info *flinfo, |
116c20d2 NC |
6802 | asection *output_section, |
6803 | struct bfd_link_order *link_order) | |
252b5132 | 6804 | { |
116c20d2 NC |
6805 | reloc_howto_type *howto; |
6806 | struct xcoff_link_hash_entry *h; | |
6807 | asection *hsec; | |
6808 | bfd_vma hval; | |
6809 | bfd_vma addend; | |
6810 | struct internal_reloc *irel; | |
6811 | struct xcoff_link_hash_entry **rel_hash_ptr; | |
252b5132 | 6812 | |
116c20d2 NC |
6813 | if (link_order->type == bfd_section_reloc_link_order) |
6814 | /* We need to somehow locate a symbol in the right section. The | |
6815 | symbol must either have a value of zero, or we must adjust | |
6816 | the addend by the value of the symbol. FIXME: Write this | |
6817 | when we need it. The old linker couldn't handle this anyhow. */ | |
6818 | abort (); | |
252b5132 | 6819 | |
116c20d2 NC |
6820 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); |
6821 | if (howto == NULL) | |
e92d460e | 6822 | { |
116c20d2 | 6823 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 6824 | return false; |
e92d460e AM |
6825 | } |
6826 | ||
116c20d2 | 6827 | h = ((struct xcoff_link_hash_entry *) |
baf9bed3 | 6828 | bfd_wrapped_link_hash_lookup (output_bfd, flinfo->info, |
116c20d2 | 6829 | link_order->u.reloc.p->u.name, |
0a1b45a2 | 6830 | false, false, true)); |
116c20d2 NC |
6831 | if (h == NULL) |
6832 | { | |
1a72702b AM |
6833 | (*flinfo->info->callbacks->unattached_reloc) |
6834 | (flinfo->info, link_order->u.reloc.p->u.name, NULL, NULL, (bfd_vma) 0); | |
0a1b45a2 | 6835 | return true; |
116c20d2 | 6836 | } |
252b5132 | 6837 | |
b3d1832c RS |
6838 | hsec = xcoff_symbol_section (h); |
6839 | if (h->root.type == bfd_link_hash_defined | |
6840 | || h->root.type == bfd_link_hash_defweak) | |
6841 | hval = h->root.u.def.value; | |
116c20d2 | 6842 | else |
b3d1832c | 6843 | hval = 0; |
252b5132 | 6844 | |
116c20d2 NC |
6845 | addend = link_order->u.reloc.p->addend; |
6846 | if (hsec != NULL) | |
6847 | addend += (hsec->output_section->vma | |
6848 | + hsec->output_offset | |
6849 | + hval); | |
252b5132 | 6850 | |
116c20d2 NC |
6851 | if (addend != 0) |
6852 | { | |
6853 | bfd_size_type size; | |
6854 | bfd_byte *buf; | |
6855 | bfd_reloc_status_type rstat; | |
0a1b45a2 | 6856 | bool ok; |
252b5132 | 6857 | |
116c20d2 NC |
6858 | size = bfd_get_reloc_size (howto); |
6859 | buf = bfd_zmalloc (size); | |
6346d5ca | 6860 | if (buf == NULL && size != 0) |
0a1b45a2 | 6861 | return false; |
252b5132 | 6862 | |
116c20d2 NC |
6863 | rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf); |
6864 | switch (rstat) | |
dc810e39 | 6865 | { |
116c20d2 NC |
6866 | case bfd_reloc_ok: |
6867 | break; | |
6868 | default: | |
6869 | case bfd_reloc_outofrange: | |
6870 | abort (); | |
6871 | case bfd_reloc_overflow: | |
1a72702b AM |
6872 | (*flinfo->info->callbacks->reloc_overflow) |
6873 | (flinfo->info, NULL, link_order->u.reloc.p->u.name, | |
6874 | howto->name, addend, NULL, NULL, (bfd_vma) 0); | |
116c20d2 NC |
6875 | break; |
6876 | } | |
6877 | ok = bfd_set_section_contents (output_bfd, output_section, (void *) buf, | |
6878 | (file_ptr) link_order->offset, size); | |
6879 | free (buf); | |
6880 | if (! ok) | |
0a1b45a2 | 6881 | return false; |
116c20d2 | 6882 | } |
252b5132 | 6883 | |
116c20d2 NC |
6884 | /* Store the reloc information in the right place. It will get |
6885 | swapped and written out at the end of the final_link routine. */ | |
baf9bed3 | 6886 | irel = (flinfo->section_info[output_section->target_index].relocs |
116c20d2 | 6887 | + output_section->reloc_count); |
baf9bed3 | 6888 | rel_hash_ptr = (flinfo->section_info[output_section->target_index].rel_hashes |
116c20d2 | 6889 | + output_section->reloc_count); |
252b5132 | 6890 | |
116c20d2 NC |
6891 | memset (irel, 0, sizeof (struct internal_reloc)); |
6892 | *rel_hash_ptr = NULL; | |
252b5132 | 6893 | |
116c20d2 | 6894 | irel->r_vaddr = output_section->vma + link_order->offset; |
252b5132 | 6895 | |
116c20d2 NC |
6896 | if (h->indx >= 0) |
6897 | irel->r_symndx = h->indx; | |
6898 | else | |
6899 | { | |
6900 | /* Set the index to -2 to force this symbol to get written out. */ | |
6901 | h->indx = -2; | |
6902 | *rel_hash_ptr = h; | |
6903 | irel->r_symndx = 0; | |
6904 | } | |
252b5132 | 6905 | |
116c20d2 NC |
6906 | irel->r_type = howto->type; |
6907 | irel->r_size = howto->bitsize - 1; | |
6908 | if (howto->complain_on_overflow == complain_overflow_signed) | |
6909 | irel->r_size |= 0x80; | |
beb1bf64 | 6910 | |
116c20d2 | 6911 | ++output_section->reloc_count; |
dc810e39 | 6912 | |
116c20d2 | 6913 | /* Now output the reloc to the .loader section. */ |
baf9bed3 | 6914 | if (xcoff_hash_table (flinfo->info)->loader_section) |
116c20d2 | 6915 | { |
baf9bed3 | 6916 | if (!xcoff_create_ldrel (output_bfd, flinfo, output_section, |
b3d1832c | 6917 | output_bfd, irel, hsec, h)) |
0a1b45a2 | 6918 | return false; |
beb1bf64 | 6919 | } |
dc810e39 | 6920 | |
0a1b45a2 | 6921 | return true; |
116c20d2 | 6922 | } |
beb1bf64 | 6923 | |
116c20d2 | 6924 | /* Do the final link step. */ |
beb1bf64 | 6925 | |
0a1b45a2 | 6926 | bool |
116c20d2 NC |
6927 | _bfd_xcoff_bfd_final_link (bfd *abfd, struct bfd_link_info *info) |
6928 | { | |
6929 | bfd_size_type symesz; | |
baf9bed3 | 6930 | struct xcoff_final_link_info flinfo; |
116c20d2 NC |
6931 | asection *o; |
6932 | struct bfd_link_order *p; | |
6933 | bfd_size_type max_contents_size; | |
6934 | bfd_size_type max_sym_count; | |
6935 | bfd_size_type max_lineno_count; | |
6936 | bfd_size_type max_reloc_count; | |
6937 | bfd_size_type max_output_reloc_count; | |
6938 | file_ptr rel_filepos; | |
6939 | unsigned int relsz; | |
6940 | file_ptr line_filepos; | |
6941 | unsigned int linesz; | |
6942 | bfd *sub; | |
6943 | bfd_byte *external_relocs = NULL; | |
6944 | char strbuf[STRING_SIZE_SIZE]; | |
6945 | file_ptr pos; | |
6946 | bfd_size_type amt; | |
dc810e39 | 6947 | |
0e1862bb | 6948 | if (bfd_link_pic (info)) |
116c20d2 | 6949 | abfd->flags |= DYNAMIC; |
dc810e39 | 6950 | |
116c20d2 | 6951 | symesz = bfd_coff_symesz (abfd); |
dc810e39 | 6952 | |
baf9bed3 JB |
6953 | flinfo.info = info; |
6954 | flinfo.output_bfd = abfd; | |
6955 | flinfo.strtab = NULL; | |
6956 | flinfo.section_info = NULL; | |
6957 | flinfo.last_file_index = -1; | |
6958 | flinfo.toc_symindx = -1; | |
6959 | flinfo.internal_syms = NULL; | |
6960 | flinfo.sym_indices = NULL; | |
6961 | flinfo.outsyms = NULL; | |
6962 | flinfo.linenos = NULL; | |
6963 | flinfo.contents = NULL; | |
6964 | flinfo.external_relocs = NULL; | |
252b5132 | 6965 | |
b3d1832c RS |
6966 | if (xcoff_hash_table (info)->loader_section) |
6967 | { | |
baf9bed3 | 6968 | flinfo.ldsym = (xcoff_hash_table (info)->loader_section->contents |
b3d1832c | 6969 | + bfd_xcoff_ldhdrsz (abfd)); |
baf9bed3 | 6970 | flinfo.ldrel = (xcoff_hash_table (info)->loader_section->contents |
b3d1832c RS |
6971 | + bfd_xcoff_ldhdrsz (abfd) |
6972 | + (xcoff_hash_table (info)->ldhdr.l_nsyms | |
6973 | * bfd_xcoff_ldsymsz (abfd))); | |
6974 | } | |
6975 | else | |
6976 | { | |
baf9bed3 JB |
6977 | flinfo.ldsym = NULL; |
6978 | flinfo.ldrel = NULL; | |
b3d1832c | 6979 | } |
252b5132 | 6980 | |
116c20d2 | 6981 | xcoff_data (abfd)->coff.link_info = info; |
beb1bf64 | 6982 | |
baf9bed3 JB |
6983 | flinfo.strtab = _bfd_stringtab_init (); |
6984 | if (flinfo.strtab == NULL) | |
116c20d2 | 6985 | goto error_return; |
beb1bf64 | 6986 | |
3df13c4a RS |
6987 | /* Count the relocation entries required for the output file. |
6988 | (We've already counted the line numbers.) Determine a few | |
6989 | maximum sizes. */ | |
116c20d2 NC |
6990 | max_contents_size = 0; |
6991 | max_lineno_count = 0; | |
6992 | max_reloc_count = 0; | |
6993 | for (o = abfd->sections; o != NULL; o = o->next) | |
6994 | { | |
6995 | o->reloc_count = 0; | |
8423293d | 6996 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
dc810e39 | 6997 | { |
116c20d2 NC |
6998 | if (p->type == bfd_indirect_link_order) |
6999 | { | |
7000 | asection *sec; | |
dc810e39 | 7001 | |
116c20d2 | 7002 | sec = p->u.indirect.section; |
beb1bf64 | 7003 | |
116c20d2 NC |
7004 | /* Mark all sections which are to be included in the |
7005 | link. This will normally be every section. We need | |
7006 | to do this so that we can identify any sections which | |
7007 | the linker has decided to not include. */ | |
0a1b45a2 | 7008 | sec->linker_mark = true; |
beb1bf64 | 7009 | |
116c20d2 | 7010 | o->reloc_count += sec->reloc_count; |
dc810e39 | 7011 | |
9ea2b942 RS |
7012 | if ((sec->flags & SEC_IN_MEMORY) == 0) |
7013 | { | |
7014 | if (sec->rawsize > max_contents_size) | |
7015 | max_contents_size = sec->rawsize; | |
7016 | if (sec->size > max_contents_size) | |
7017 | max_contents_size = sec->size; | |
7018 | } | |
116c20d2 NC |
7019 | if (coff_section_data (sec->owner, sec) != NULL |
7020 | && xcoff_section_data (sec->owner, sec) != NULL | |
7021 | && (xcoff_section_data (sec->owner, sec)->lineno_count | |
7022 | > max_lineno_count)) | |
7023 | max_lineno_count = | |
7024 | xcoff_section_data (sec->owner, sec)->lineno_count; | |
7025 | if (sec->reloc_count > max_reloc_count) | |
7026 | max_reloc_count = sec->reloc_count; | |
7027 | } | |
7028 | else if (p->type == bfd_section_reloc_link_order | |
7029 | || p->type == bfd_symbol_reloc_link_order) | |
7030 | ++o->reloc_count; | |
dc810e39 | 7031 | } |
116c20d2 | 7032 | } |
252b5132 | 7033 | |
116c20d2 NC |
7034 | /* Compute the file positions for all the sections. */ |
7035 | if (abfd->output_has_begun) | |
7036 | { | |
7037 | if (xcoff_hash_table (info)->file_align != 0) | |
7038 | abort (); | |
7039 | } | |
7040 | else | |
7041 | { | |
7042 | bfd_vma file_align; | |
252b5132 | 7043 | |
116c20d2 NC |
7044 | file_align = xcoff_hash_table (info)->file_align; |
7045 | if (file_align != 0) | |
dc810e39 | 7046 | { |
0a1b45a2 | 7047 | bool saw_contents; |
116c20d2 | 7048 | int indx; |
116c20d2 | 7049 | file_ptr sofar; |
252b5132 | 7050 | |
116c20d2 NC |
7051 | /* Insert .pad sections before every section which has |
7052 | contents and is loaded, if it is preceded by some other | |
7053 | section which has contents and is loaded. */ | |
0a1b45a2 | 7054 | saw_contents = true; |
04dd1667 | 7055 | for (o = abfd->sections; o != NULL; o = o->next) |
116c20d2 | 7056 | { |
04dd1667 | 7057 | if (strcmp (o->name, ".pad") == 0) |
0a1b45a2 | 7058 | saw_contents = false; |
04dd1667 AM |
7059 | else if ((o->flags & SEC_HAS_CONTENTS) != 0 |
7060 | && (o->flags & SEC_LOAD) != 0) | |
116c20d2 NC |
7061 | { |
7062 | if (! saw_contents) | |
0a1b45a2 | 7063 | saw_contents = true; |
116c20d2 NC |
7064 | else |
7065 | { | |
5daa8fe7 | 7066 | asection *n; |
252b5132 | 7067 | |
116c20d2 NC |
7068 | /* Create a pad section and place it before the section |
7069 | that needs padding. This requires unlinking and | |
7070 | relinking the bfd's section list. */ | |
252b5132 | 7071 | |
117ed4f8 AM |
7072 | n = bfd_make_section_anyway_with_flags (abfd, ".pad", |
7073 | SEC_HAS_CONTENTS); | |
116c20d2 | 7074 | n->alignment_power = 0; |
252b5132 | 7075 | |
5daa8fe7 | 7076 | bfd_section_list_remove (abfd, n); |
04dd1667 | 7077 | bfd_section_list_insert_before (abfd, o, n); |
0a1b45a2 | 7078 | saw_contents = false; |
116c20d2 NC |
7079 | } |
7080 | } | |
7081 | } | |
7082 | ||
7083 | /* Reset the section indices after inserting the new | |
7084 | sections. */ | |
204d627e AM |
7085 | if (xcoff_data (abfd)->coff.section_by_target_index) |
7086 | htab_empty (xcoff_data (abfd)->coff.section_by_target_index); | |
116c20d2 NC |
7087 | indx = 0; |
7088 | for (o = abfd->sections; o != NULL; o = o->next) | |
7089 | { | |
7090 | ++indx; | |
7091 | o->target_index = indx; | |
7092 | } | |
7093 | BFD_ASSERT ((unsigned int) indx == abfd->section_count); | |
7094 | ||
7095 | /* Work out appropriate sizes for the .pad sections to force | |
7096 | each section to land on a page boundary. This bit of | |
7097 | code knows what compute_section_file_positions is going | |
7098 | to do. */ | |
7099 | sofar = bfd_coff_filhsz (abfd); | |
7100 | sofar += bfd_coff_aoutsz (abfd); | |
7101 | sofar += abfd->section_count * bfd_coff_scnhsz (abfd); | |
7102 | for (o = abfd->sections; o != NULL; o = o->next) | |
7103 | if ((bfd_xcoff_is_reloc_count_overflow | |
7104 | (abfd, (bfd_vma) o->reloc_count)) | |
7105 | || (bfd_xcoff_is_lineno_count_overflow | |
7106 | (abfd, (bfd_vma) o->lineno_count))) | |
7107 | /* 64 does not overflow, need to check if 32 does */ | |
7108 | sofar += bfd_coff_scnhsz (abfd); | |
252b5132 | 7109 | |
116c20d2 | 7110 | for (o = abfd->sections; o != NULL; o = o->next) |
dc810e39 | 7111 | { |
116c20d2 NC |
7112 | if (strcmp (o->name, ".pad") == 0) |
7113 | { | |
7114 | bfd_vma pageoff; | |
252b5132 | 7115 | |
116c20d2 NC |
7116 | BFD_ASSERT (o->size == 0); |
7117 | pageoff = sofar & (file_align - 1); | |
7118 | if (pageoff != 0) | |
7119 | { | |
7120 | o->size = file_align - pageoff; | |
7121 | sofar += file_align - pageoff; | |
7122 | o->flags |= SEC_HAS_CONTENTS; | |
7123 | } | |
7124 | } | |
7125 | else | |
7126 | { | |
7127 | if ((o->flags & SEC_HAS_CONTENTS) != 0) | |
7128 | sofar += BFD_ALIGN (o->size, | |
7129 | 1 << o->alignment_power); | |
7130 | } | |
252b5132 RH |
7131 | } |
7132 | } | |
116c20d2 NC |
7133 | |
7134 | if (! bfd_coff_compute_section_file_positions (abfd)) | |
7135 | goto error_return; | |
252b5132 RH |
7136 | } |
7137 | ||
116c20d2 NC |
7138 | /* Allocate space for the pointers we need to keep for the relocs. */ |
7139 | { | |
7140 | unsigned int i; | |
dc810e39 | 7141 | |
116c20d2 NC |
7142 | /* We use section_count + 1, rather than section_count, because |
7143 | the target_index fields are 1 based. */ | |
7144 | amt = abfd->section_count + 1; | |
7145 | amt *= sizeof (struct xcoff_link_section_info); | |
baf9bed3 JB |
7146 | flinfo.section_info = bfd_malloc (amt); |
7147 | if (flinfo.section_info == NULL) | |
116c20d2 NC |
7148 | goto error_return; |
7149 | for (i = 0; i <= abfd->section_count; i++) | |
7150 | { | |
baf9bed3 JB |
7151 | flinfo.section_info[i].relocs = NULL; |
7152 | flinfo.section_info[i].rel_hashes = NULL; | |
7153 | flinfo.section_info[i].toc_rel_hashes = NULL; | |
116c20d2 NC |
7154 | } |
7155 | } | |
beb1bf64 | 7156 | |
116c20d2 NC |
7157 | /* Set the file positions for the relocs. */ |
7158 | rel_filepos = obj_relocbase (abfd); | |
7159 | relsz = bfd_coff_relsz (abfd); | |
7160 | max_output_reloc_count = 0; | |
7161 | for (o = abfd->sections; o != NULL; o = o->next) | |
7162 | { | |
7163 | if (o->reloc_count == 0) | |
7164 | o->rel_filepos = 0; | |
dc810e39 AM |
7165 | else |
7166 | { | |
116c20d2 NC |
7167 | /* A stripped file has no relocs. However, we still |
7168 | allocate the buffers, so that later code doesn't have to | |
7169 | worry about whether we are stripping or not. */ | |
7170 | if (info->strip == strip_all) | |
7171 | o->rel_filepos = 0; | |
7172 | else | |
7173 | { | |
7174 | o->flags |= SEC_RELOC; | |
7175 | o->rel_filepos = rel_filepos; | |
7176 | rel_filepos += o->reloc_count * relsz; | |
7177 | } | |
252b5132 | 7178 | |
116c20d2 NC |
7179 | /* We don't know the indices of global symbols until we have |
7180 | written out all the local symbols. For each section in | |
7181 | the output file, we keep an array of pointers to hash | |
7182 | table entries. Each entry in the array corresponds to a | |
7183 | reloc. When we find a reloc against a global symbol, we | |
7184 | set the corresponding entry in this array so that we can | |
7185 | fix up the symbol index after we have written out all the | |
7186 | local symbols. | |
252b5132 | 7187 | |
116c20d2 NC |
7188 | Because of this problem, we also keep the relocs in |
7189 | memory until the end of the link. This wastes memory. | |
7190 | We could backpatch the file later, I suppose, although it | |
7191 | would be slow. */ | |
7192 | amt = o->reloc_count; | |
7193 | amt *= sizeof (struct internal_reloc); | |
baf9bed3 | 7194 | flinfo.section_info[o->target_index].relocs = bfd_malloc (amt); |
252b5132 | 7195 | |
116c20d2 NC |
7196 | amt = o->reloc_count; |
7197 | amt *= sizeof (struct xcoff_link_hash_entry *); | |
baf9bed3 | 7198 | flinfo.section_info[o->target_index].rel_hashes = bfd_malloc (amt); |
252b5132 | 7199 | |
baf9bed3 JB |
7200 | if (flinfo.section_info[o->target_index].relocs == NULL |
7201 | || flinfo.section_info[o->target_index].rel_hashes == NULL) | |
116c20d2 | 7202 | goto error_return; |
beb1bf64 | 7203 | |
116c20d2 NC |
7204 | if (o->reloc_count > max_output_reloc_count) |
7205 | max_output_reloc_count = o->reloc_count; | |
dc810e39 | 7206 | } |
116c20d2 | 7207 | } |
dc810e39 | 7208 | |
116c20d2 NC |
7209 | /* We now know the size of the relocs, so we can determine the file |
7210 | positions of the line numbers. */ | |
7211 | line_filepos = rel_filepos; | |
baf9bed3 | 7212 | flinfo.line_filepos = line_filepos; |
116c20d2 NC |
7213 | linesz = bfd_coff_linesz (abfd); |
7214 | for (o = abfd->sections; o != NULL; o = o->next) | |
7215 | { | |
7216 | if (o->lineno_count == 0) | |
7217 | o->line_filepos = 0; | |
252b5132 RH |
7218 | else |
7219 | { | |
116c20d2 NC |
7220 | o->line_filepos = line_filepos; |
7221 | line_filepos += o->lineno_count * linesz; | |
252b5132 | 7222 | } |
252b5132 | 7223 | |
116c20d2 NC |
7224 | /* Reset the reloc and lineno counts, so that we can use them to |
7225 | count the number of entries we have output so far. */ | |
7226 | o->reloc_count = 0; | |
7227 | o->lineno_count = 0; | |
252b5132 RH |
7228 | } |
7229 | ||
116c20d2 | 7230 | obj_sym_filepos (abfd) = line_filepos; |
252b5132 | 7231 | |
116c20d2 NC |
7232 | /* Figure out the largest number of symbols in an input BFD. Take |
7233 | the opportunity to clear the output_has_begun fields of all the | |
7234 | input BFD's. We want at least 6 symbols, since that is the | |
7235 | number which xcoff_write_global_symbol may need. */ | |
7236 | max_sym_count = 6; | |
c72f2fb2 | 7237 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
252b5132 | 7238 | { |
116c20d2 NC |
7239 | bfd_size_type sz; |
7240 | ||
0a1b45a2 | 7241 | sub->output_has_begun = false; |
116c20d2 NC |
7242 | sz = obj_raw_syment_count (sub); |
7243 | if (sz > max_sym_count) | |
7244 | max_sym_count = sz; | |
252b5132 RH |
7245 | } |
7246 | ||
116c20d2 NC |
7247 | /* Allocate some buffers used while linking. */ |
7248 | amt = max_sym_count * sizeof (struct internal_syment); | |
baf9bed3 | 7249 | flinfo.internal_syms = bfd_malloc (amt); |
252b5132 | 7250 | |
116c20d2 | 7251 | amt = max_sym_count * sizeof (long); |
baf9bed3 | 7252 | flinfo.sym_indices = bfd_malloc (amt); |
252b5132 | 7253 | |
116c20d2 | 7254 | amt = (max_sym_count + 1) * symesz; |
baf9bed3 | 7255 | flinfo.outsyms = bfd_malloc (amt); |
252b5132 | 7256 | |
116c20d2 | 7257 | amt = max_lineno_count * bfd_coff_linesz (abfd); |
baf9bed3 | 7258 | flinfo.linenos = bfd_malloc (amt); |
252b5132 | 7259 | |
116c20d2 | 7260 | amt = max_contents_size; |
baf9bed3 | 7261 | flinfo.contents = bfd_malloc (amt); |
252b5132 | 7262 | |
116c20d2 | 7263 | amt = max_reloc_count * relsz; |
baf9bed3 JB |
7264 | flinfo.external_relocs = bfd_malloc (amt); |
7265 | ||
7266 | if ((flinfo.internal_syms == NULL && max_sym_count > 0) | |
7267 | || (flinfo.sym_indices == NULL && max_sym_count > 0) | |
7268 | || flinfo.outsyms == NULL | |
7269 | || (flinfo.linenos == NULL && max_lineno_count > 0) | |
7270 | || (flinfo.contents == NULL && max_contents_size > 0) | |
7271 | || (flinfo.external_relocs == NULL && max_reloc_count > 0)) | |
116c20d2 NC |
7272 | goto error_return; |
7273 | ||
7274 | obj_raw_syment_count (abfd) = 0; | |
47dfb2ca RS |
7275 | |
7276 | /* Find a TOC symbol, if we need one. */ | |
baf9bed3 | 7277 | if (!xcoff_find_tc0 (abfd, &flinfo)) |
47dfb2ca | 7278 | goto error_return; |
116c20d2 NC |
7279 | |
7280 | /* We now know the position of everything in the file, except that | |
7281 | we don't know the size of the symbol table and therefore we don't | |
7282 | know where the string table starts. We just build the string | |
7283 | table in memory as we go along. We process all the relocations | |
7284 | for a single input file at once. */ | |
7285 | for (o = abfd->sections; o != NULL; o = o->next) | |
7286 | { | |
8423293d | 7287 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
252b5132 | 7288 | { |
116c20d2 NC |
7289 | if (p->type == bfd_indirect_link_order |
7290 | && p->u.indirect.section->owner->xvec == abfd->xvec) | |
252b5132 | 7291 | { |
116c20d2 NC |
7292 | sub = p->u.indirect.section->owner; |
7293 | if (! sub->output_has_begun) | |
252b5132 | 7294 | { |
2d23f965 CC |
7295 | if (sub == xcoff_hash_table (info)->params->stub_bfd) |
7296 | { | |
7297 | continue; | |
7298 | } | |
7299 | else | |
7300 | { | |
7301 | if (! xcoff_link_input_bfd (&flinfo, sub)) | |
7302 | { | |
7303 | _bfd_error_handler | |
7304 | (_("Unable to link input file: %s"), sub->filename); | |
7305 | bfd_set_error (bfd_error_sorry); | |
7306 | goto error_return; | |
7307 | } | |
7308 | } | |
0a1b45a2 | 7309 | sub->output_has_begun = true; |
252b5132 RH |
7310 | } |
7311 | } | |
116c20d2 NC |
7312 | else if (p->type == bfd_section_reloc_link_order |
7313 | || p->type == bfd_symbol_reloc_link_order) | |
7314 | { | |
baf9bed3 | 7315 | if (! xcoff_reloc_link_order (abfd, &flinfo, o, p)) |
116c20d2 NC |
7316 | goto error_return; |
7317 | } | |
7318 | else | |
7319 | { | |
7320 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
7321 | goto error_return; | |
7322 | } | |
252b5132 RH |
7323 | } |
7324 | } | |
116c20d2 NC |
7325 | |
7326 | /* Free up the buffers used by xcoff_link_input_bfd. */ | |
c9594989 AM |
7327 | free (flinfo.internal_syms); |
7328 | flinfo.internal_syms = NULL; | |
7329 | free (flinfo.sym_indices); | |
7330 | flinfo.sym_indices = NULL; | |
7331 | free (flinfo.linenos); | |
7332 | flinfo.linenos = NULL; | |
7333 | free (flinfo.contents); | |
7334 | flinfo.contents = NULL; | |
7335 | free (flinfo.external_relocs); | |
7336 | flinfo.external_relocs = NULL; | |
252b5132 | 7337 | |
116c20d2 NC |
7338 | /* The value of the last C_FILE symbol is supposed to be -1. Write |
7339 | it out again. */ | |
baf9bed3 | 7340 | if (flinfo.last_file_index != -1) |
116c20d2 | 7341 | { |
baf9bed3 JB |
7342 | flinfo.last_file.n_value = -(bfd_vma) 1; |
7343 | bfd_coff_swap_sym_out (abfd, (void *) &flinfo.last_file, | |
7344 | (void *) flinfo.outsyms); | |
7345 | pos = obj_sym_filepos (abfd) + flinfo.last_file_index * symesz; | |
116c20d2 | 7346 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 |
226f9f4f | 7347 | || bfd_write (flinfo.outsyms, symesz, abfd) != symesz) |
116c20d2 NC |
7348 | goto error_return; |
7349 | } | |
252b5132 | 7350 | |
116c20d2 NC |
7351 | /* Write out all the global symbols which do not come from XCOFF |
7352 | input files. */ | |
7686d77d | 7353 | bfd_hash_traverse (&info->hash->table, xcoff_write_global_symbol, &flinfo); |
252b5132 | 7354 | |
2d23f965 CC |
7355 | /* Write out the relocations created by stub entries. The symbols |
7356 | will have been already written by xcoff_write_global_symbol. */ | |
7357 | bfd_hash_traverse (&xcoff_hash_table(info)->stub_hash_table, | |
7358 | xcoff_stub_create_relocations, | |
7359 | &flinfo); | |
7360 | ||
c9594989 AM |
7361 | free (flinfo.outsyms); |
7362 | flinfo.outsyms = NULL; | |
252b5132 | 7363 | |
116c20d2 NC |
7364 | /* Now that we have written out all the global symbols, we know the |
7365 | symbol indices to use for relocs against them, and we can finally | |
7366 | write out the relocs. */ | |
7367 | amt = max_output_reloc_count * relsz; | |
7368 | external_relocs = bfd_malloc (amt); | |
7369 | if (external_relocs == NULL && max_output_reloc_count != 0) | |
7370 | goto error_return; | |
252b5132 | 7371 | |
116c20d2 NC |
7372 | for (o = abfd->sections; o != NULL; o = o->next) |
7373 | { | |
7374 | struct internal_reloc *irel; | |
7375 | struct internal_reloc *irelend; | |
7376 | struct xcoff_link_hash_entry **rel_hash; | |
7377 | struct xcoff_toc_rel_hash *toc_rel_hash; | |
7378 | bfd_byte *erel; | |
7379 | bfd_size_type rel_size; | |
252b5132 | 7380 | |
116c20d2 NC |
7381 | /* A stripped file has no relocs. */ |
7382 | if (info->strip == strip_all) | |
7383 | { | |
7384 | o->reloc_count = 0; | |
7385 | continue; | |
7386 | } | |
252b5132 | 7387 | |
116c20d2 NC |
7388 | if (o->reloc_count == 0) |
7389 | continue; | |
252b5132 | 7390 | |
baf9bed3 | 7391 | irel = flinfo.section_info[o->target_index].relocs; |
116c20d2 | 7392 | irelend = irel + o->reloc_count; |
baf9bed3 | 7393 | rel_hash = flinfo.section_info[o->target_index].rel_hashes; |
1c1479bf | 7394 | for (; irel < irelend; irel++, rel_hash++) |
116c20d2 NC |
7395 | { |
7396 | if (*rel_hash != NULL) | |
7397 | { | |
7398 | if ((*rel_hash)->indx < 0) | |
7399 | { | |
1a72702b AM |
7400 | (*info->callbacks->unattached_reloc) |
7401 | (info, (*rel_hash)->root.root.string, | |
7402 | NULL, o, irel->r_vaddr); | |
116c20d2 NC |
7403 | (*rel_hash)->indx = 0; |
7404 | } | |
7405 | irel->r_symndx = (*rel_hash)->indx; | |
7406 | } | |
7407 | } | |
252b5132 | 7408 | |
baf9bed3 | 7409 | for (toc_rel_hash = flinfo.section_info[o->target_index].toc_rel_hashes; |
116c20d2 NC |
7410 | toc_rel_hash != NULL; |
7411 | toc_rel_hash = toc_rel_hash->next) | |
7412 | { | |
7413 | if (toc_rel_hash->h->u.toc_indx < 0) | |
7414 | { | |
1a72702b AM |
7415 | (*info->callbacks->unattached_reloc) |
7416 | (info, toc_rel_hash->h->root.root.string, | |
7417 | NULL, o, toc_rel_hash->rel->r_vaddr); | |
116c20d2 NC |
7418 | toc_rel_hash->h->u.toc_indx = 0; |
7419 | } | |
7420 | toc_rel_hash->rel->r_symndx = toc_rel_hash->h->u.toc_indx; | |
7421 | } | |
252b5132 | 7422 | |
116c20d2 NC |
7423 | /* XCOFF requires that the relocs be sorted by address. We tend |
7424 | to produce them in the order in which their containing csects | |
7425 | appear in the symbol table, which is not necessarily by | |
7426 | address. So we sort them here. There may be a better way to | |
7427 | do this. */ | |
baf9bed3 | 7428 | qsort ((void *) flinfo.section_info[o->target_index].relocs, |
116c20d2 NC |
7429 | o->reloc_count, sizeof (struct internal_reloc), |
7430 | xcoff_sort_relocs); | |
252b5132 | 7431 | |
baf9bed3 | 7432 | irel = flinfo.section_info[o->target_index].relocs; |
116c20d2 NC |
7433 | irelend = irel + o->reloc_count; |
7434 | erel = external_relocs; | |
7435 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) | |
7436 | bfd_coff_swap_reloc_out (abfd, (void *) irel, (void *) erel); | |
252b5132 | 7437 | |
116c20d2 NC |
7438 | rel_size = relsz * o->reloc_count; |
7439 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 | |
226f9f4f | 7440 | || bfd_write (external_relocs, rel_size, abfd) != rel_size) |
116c20d2 | 7441 | goto error_return; |
252b5132 RH |
7442 | } |
7443 | ||
c9594989 AM |
7444 | free (external_relocs); |
7445 | external_relocs = NULL; | |
252b5132 | 7446 | |
116c20d2 | 7447 | /* Free up the section information. */ |
baf9bed3 | 7448 | if (flinfo.section_info != NULL) |
252b5132 | 7449 | { |
116c20d2 | 7450 | unsigned int i; |
252b5132 | 7451 | |
116c20d2 | 7452 | for (i = 0; i < abfd->section_count; i++) |
252b5132 | 7453 | { |
c9594989 AM |
7454 | free (flinfo.section_info[i].relocs); |
7455 | free (flinfo.section_info[i].rel_hashes); | |
252b5132 | 7456 | } |
baf9bed3 JB |
7457 | free (flinfo.section_info); |
7458 | flinfo.section_info = NULL; | |
252b5132 RH |
7459 | } |
7460 | ||
2d23f965 CC |
7461 | /* Write out the stub sections. */ |
7462 | for (o = xcoff_hash_table (info)->params->stub_bfd->sections; | |
7463 | o != NULL; o = o->next) | |
7464 | { | |
7465 | if ((o->flags & SEC_HAS_CONTENTS) == 0 | |
7466 | || o->size == 0) | |
7467 | continue; | |
7468 | ||
7469 | if (!bfd_set_section_contents (abfd, o->output_section, o->contents, | |
7470 | (file_ptr) o->output_offset, o->size)) | |
7471 | goto error_return; | |
7472 | } | |
7473 | ||
116c20d2 | 7474 | /* Write out the loader section contents. */ |
116c20d2 | 7475 | o = xcoff_hash_table (info)->loader_section; |
23f5e55e AM |
7476 | if (o != NULL |
7477 | && o->size != 0 | |
7478 | && o->output_section != bfd_abs_section_ptr) | |
b3d1832c | 7479 | { |
baf9bed3 | 7480 | BFD_ASSERT ((bfd_byte *) flinfo.ldrel |
b3d1832c RS |
7481 | == (xcoff_hash_table (info)->loader_section->contents |
7482 | + xcoff_hash_table (info)->ldhdr.l_impoff)); | |
7483 | if (!bfd_set_section_contents (abfd, o->output_section, o->contents, | |
7484 | (file_ptr) o->output_offset, o->size)) | |
7485 | goto error_return; | |
7486 | } | |
252b5132 | 7487 | |
116c20d2 NC |
7488 | /* Write out the magic sections. */ |
7489 | o = xcoff_hash_table (info)->linkage_section; | |
23f5e55e AM |
7490 | if (o != NULL |
7491 | && o->size != 0 | |
7492 | && o->output_section != bfd_abs_section_ptr | |
116c20d2 NC |
7493 | && ! bfd_set_section_contents (abfd, o->output_section, o->contents, |
7494 | (file_ptr) o->output_offset, | |
7495 | o->size)) | |
7496 | goto error_return; | |
7497 | o = xcoff_hash_table (info)->toc_section; | |
23f5e55e AM |
7498 | if (o != NULL |
7499 | && o->size != 0 | |
7500 | && o->output_section != bfd_abs_section_ptr | |
116c20d2 NC |
7501 | && ! bfd_set_section_contents (abfd, o->output_section, o->contents, |
7502 | (file_ptr) o->output_offset, | |
7503 | o->size)) | |
7504 | goto error_return; | |
7505 | o = xcoff_hash_table (info)->descriptor_section; | |
23f5e55e AM |
7506 | if (o != NULL |
7507 | && o->size != 0 | |
7508 | && o->output_section != bfd_abs_section_ptr | |
116c20d2 NC |
7509 | && ! bfd_set_section_contents (abfd, o->output_section, o->contents, |
7510 | (file_ptr) o->output_offset, | |
7511 | o->size)) | |
7512 | goto error_return; | |
252b5132 | 7513 | |
116c20d2 NC |
7514 | /* Write out the string table. */ |
7515 | pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz; | |
7516 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
7517 | goto error_return; | |
7518 | H_PUT_32 (abfd, | |
baf9bed3 | 7519 | _bfd_stringtab_size (flinfo.strtab) + STRING_SIZE_SIZE, |
116c20d2 NC |
7520 | strbuf); |
7521 | amt = STRING_SIZE_SIZE; | |
226f9f4f | 7522 | if (bfd_write (strbuf, amt, abfd) != amt) |
116c20d2 | 7523 | goto error_return; |
baf9bed3 | 7524 | if (! _bfd_stringtab_emit (abfd, flinfo.strtab)) |
116c20d2 | 7525 | goto error_return; |
252b5132 | 7526 | |
baf9bed3 | 7527 | _bfd_stringtab_free (flinfo.strtab); |
252b5132 | 7528 | |
116c20d2 NC |
7529 | /* Write out the debugging string table. */ |
7530 | o = xcoff_hash_table (info)->debug_section; | |
23f5e55e AM |
7531 | if (o != NULL |
7532 | && o->size != 0 | |
7533 | && o->output_section != bfd_abs_section_ptr) | |
252b5132 | 7534 | { |
116c20d2 | 7535 | struct bfd_strtab_hash *debug_strtab; |
252b5132 | 7536 | |
116c20d2 NC |
7537 | debug_strtab = xcoff_hash_table (info)->debug_strtab; |
7538 | BFD_ASSERT (o->output_section->size - o->output_offset | |
7539 | >= _bfd_stringtab_size (debug_strtab)); | |
7540 | pos = o->output_section->filepos + o->output_offset; | |
7541 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
7542 | goto error_return; | |
7543 | if (! _bfd_stringtab_emit (abfd, debug_strtab)) | |
7544 | goto error_return; | |
7545 | } | |
252b5132 | 7546 | |
ed48ec2e | 7547 | /* Setting symcount to 0 will cause write_object_contents to |
116c20d2 | 7548 | not try to write out the symbols. */ |
ed48ec2e | 7549 | abfd->symcount = 0; |
252b5132 | 7550 | |
0a1b45a2 | 7551 | return true; |
252b5132 | 7552 | |
116c20d2 | 7553 | error_return: |
baf9bed3 JB |
7554 | if (flinfo.strtab != NULL) |
7555 | _bfd_stringtab_free (flinfo.strtab); | |
252b5132 | 7556 | |
baf9bed3 | 7557 | if (flinfo.section_info != NULL) |
252b5132 | 7558 | { |
116c20d2 | 7559 | unsigned int i; |
252b5132 | 7560 | |
116c20d2 | 7561 | for (i = 0; i < abfd->section_count; i++) |
252b5132 | 7562 | { |
c9594989 AM |
7563 | free (flinfo.section_info[i].relocs); |
7564 | free (flinfo.section_info[i].rel_hashes); | |
252b5132 | 7565 | } |
baf9bed3 JB |
7566 | free (flinfo.section_info); |
7567 | } | |
7568 | ||
c9594989 AM |
7569 | free (flinfo.internal_syms); |
7570 | free (flinfo.sym_indices); | |
7571 | free (flinfo.outsyms); | |
7572 | free (flinfo.linenos); | |
7573 | free (flinfo.contents); | |
7574 | free (flinfo.external_relocs); | |
7575 | free (external_relocs); | |
0a1b45a2 | 7576 | return false; |
252b5132 | 7577 | } |