Commit | Line | Data |
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1f808cd5 | 1 | # This shell script emits a C file. -*- C -*- |
794e51c0 | 2 | # Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
74f0fb50 | 3 | # Free Software Foundation, Inc. |
1f808cd5 | 4 | # |
f96b4a7b | 5 | # This file is part of the GNU Binutils. |
1f808cd5 AM |
6 | # |
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 | |
f96b4a7b | 9 | # the Free Software Foundation; either version 3 of the License, or |
1f808cd5 AM |
10 | # (at your option) any later version. |
11 | # | |
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. | |
16 | # | |
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 | |
f96b4a7b NC |
19 | # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | # MA 02110-1301, USA. | |
1f808cd5 AM |
21 | # |
22 | ||
23 | # This file is sourced from elf32.em, and defines extra powerpc64-elf | |
24 | # specific routines. | |
25 | # | |
92b93329 | 26 | fragment <<EOF |
1f808cd5 | 27 | |
9c1d81c1 | 28 | #include "ldctor.h" |
805fc799 | 29 | #include "libbfd.h" |
83490352 | 30 | #include "elf-bfd.h" |
1f808cd5 | 31 | #include "elf64-ppc.h" |
f05eb3b7 | 32 | #include "ldlex.h" |
1f808cd5 | 33 | |
e7d1c40c AM |
34 | static asection *ppc_add_stub_section (const char *, asection *); |
35 | static void ppc_layout_sections_again (void); | |
36 | ||
37 | static struct ppc64_elf_params params = { NULL, | |
38 | &ppc_add_stub_section, | |
39 | &ppc_layout_sections_again, | |
40 | 1, 0, 0, | |
41 | ${DEFAULT_PLT_STATIC_CHAIN-0}, -1, 0, | |
7d4c687d | 42 | 0, -1, -1}; |
e7d1c40c | 43 | |
9c1d81c1 AM |
44 | /* Fake input file for stubs. */ |
45 | static lang_input_statement_type *stub_file; | |
68f8ff14 | 46 | static int stub_added = 0; |
9c1d81c1 | 47 | |
deb04cdb AM |
48 | /* Whether we need to call ppc_layout_sections_again. */ |
49 | static int need_laying_out = 0; | |
50 | ||
fac1652d AM |
51 | /* Whether to add ".foo" entries for each "foo" in a version script. */ |
52 | static int dotsyms = 1; | |
53 | ||
e5096e3f | 54 | /* Whether to run tls optimization. */ |
c5614fa4 AM |
55 | static int no_tls_opt = 0; |
56 | ||
57 | /* Whether to run opd optimization. */ | |
58 | static int no_opd_opt = 0; | |
59 | ||
60 | /* Whether to run toc optimization. */ | |
61 | static int no_toc_opt = 0; | |
e5096e3f | 62 | |
d43d0b53 AM |
63 | /* Whether to sort input toc and got sections. */ |
64 | static int no_toc_sort = 0; | |
65 | ||
794e51c0 AM |
66 | /* Set if individual PLT call stubs should be aligned. */ |
67 | static int plt_stub_align = 0; | |
68 | ||
0b9a4d73 AM |
69 | static asection *toc_section = 0; |
70 | ||
9c1d81c1 AM |
71 | /* This is called before the input files are opened. We create a new |
72 | fake input file to hold the stub sections. */ | |
73 | ||
74 | static void | |
7d8a3a28 | 75 | ppc_create_output_section_statements (void) |
9c1d81c1 | 76 | { |
5503fea1 | 77 | if (!(bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour |
4dfe6ac6 | 78 | && elf_object_id (link_info.output_bfd) == PPC64_ELF_DATA)) |
a015f5ec AM |
79 | return; |
80 | ||
b9cf773d AM |
81 | link_info.wrap_char = '.'; |
82 | ||
9c1d81c1 AM |
83 | stub_file = lang_add_input_file ("linker stubs", |
84 | lang_input_file_is_fake_enum, | |
85 | NULL); | |
f13a99db | 86 | stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd); |
9c1d81c1 AM |
87 | if (stub_file->the_bfd == NULL |
88 | || !bfd_set_arch_mach (stub_file->the_bfd, | |
f13a99db AM |
89 | bfd_get_arch (link_info.output_bfd), |
90 | bfd_get_mach (link_info.output_bfd))) | |
9c1d81c1 | 91 | { |
f7c46796 | 92 | einfo ("%F%P: can not create BFD: %E\n"); |
9c1d81c1 AM |
93 | return; |
94 | } | |
95 | ||
d457dcf6 | 96 | stub_file->the_bfd->flags |= BFD_LINKER_CREATED; |
9c1d81c1 | 97 | ldlang_add_file (stub_file); |
e7d1c40c | 98 | params.stub_bfd = stub_file->the_bfd; |
7d4c687d AM |
99 | if (params.save_restore_funcs < 0) |
100 | params.save_restore_funcs = !link_info.relocatable; | |
e7d1c40c | 101 | if (!ppc64_elf_init_stub_bfd (&link_info, ¶ms)) |
bfeb4a28 | 102 | einfo ("%F%P: can not init BFD: %E\n"); |
9c1d81c1 AM |
103 | } |
104 | ||
d43d0b53 AM |
105 | /* Move the input section statement at *U which happens to be on LIST |
106 | to be just before *TO. */ | |
107 | ||
108 | static void | |
109 | move_input_section (lang_statement_list_type *list, | |
110 | lang_statement_union_type **u, | |
111 | lang_statement_union_type **to) | |
112 | { | |
113 | lang_statement_union_type *s = *u; | |
114 | asection *i = s->input_section.section; | |
115 | asection *p, *n; | |
116 | ||
117 | /* Snip the input section from the statement list. If it was the | |
118 | last statement, fix the list tail pointer. */ | |
119 | *u = s->header.next; | |
120 | if (*u == NULL) | |
121 | list->tail = u; | |
122 | /* Add it back in the new position. */ | |
123 | s->header.next = *to; | |
124 | *to = s; | |
125 | if (list->tail == to) | |
126 | list->tail = &s->header.next; | |
127 | ||
128 | /* Trim I off the bfd map_head/map_tail doubly linked lists. */ | |
129 | n = i->map_head.s; | |
130 | p = i->map_tail.s; | |
131 | (p != NULL ? p : i->output_section)->map_head.s = n; | |
132 | (n != NULL ? n : i->output_section)->map_tail.s = p; | |
133 | ||
134 | /* Add I back on in its new position. */ | |
135 | if (s->header.next->header.type == lang_input_section_enum) | |
136 | { | |
137 | n = s->header.next->input_section.section; | |
138 | p = n->map_tail.s; | |
139 | } | |
140 | else | |
141 | { | |
142 | /* If the next statement is not an input section statement then | |
143 | TO must point at the previous input section statement | |
144 | header.next field. */ | |
145 | lang_input_section_type *prev = (lang_input_section_type *) | |
146 | ((char *) to - offsetof (lang_statement_union_type, header.next)); | |
147 | ||
148 | ASSERT (prev->header.type == lang_input_section_enum); | |
149 | p = prev->section; | |
150 | n = p->map_head.s; | |
151 | } | |
152 | i->map_head.s = n; | |
153 | i->map_tail.s = p; | |
154 | (p != NULL ? p : i->output_section)->map_head.s = i; | |
155 | (n != NULL ? n : i->output_section)->map_tail.s = i; | |
156 | } | |
157 | ||
158 | /* Sort input section statements in the linker script tree rooted at | |
159 | LIST so that those whose owning bfd happens to have a section | |
160 | called .init or .fini are placed first. Place any TOC sections | |
161 | referenced by small TOC relocs next, with TOC sections referenced | |
162 | only by bigtoc relocs last. */ | |
163 | ||
164 | static void | |
165 | sort_toc_sections (lang_statement_list_type *list, | |
166 | lang_statement_union_type **ini, | |
167 | lang_statement_union_type **small) | |
168 | { | |
169 | lang_statement_union_type *s, **u; | |
170 | asection *i; | |
171 | ||
172 | u = &list->head; | |
173 | while ((s = *u) != NULL) | |
174 | { | |
175 | switch (s->header.type) | |
176 | { | |
177 | case lang_wild_statement_enum: | |
178 | sort_toc_sections (&s->wild_statement.children, ini, small); | |
179 | break; | |
180 | ||
181 | case lang_group_statement_enum: | |
182 | sort_toc_sections (&s->group_statement.children, ini, small); | |
183 | break; | |
184 | ||
185 | case lang_input_section_enum: | |
186 | i = s->input_section.section; | |
187 | /* Leave the stub_file .got where it is. We put the .got | |
188 | header there. */ | |
189 | if (i->owner == stub_file->the_bfd) | |
190 | break; | |
191 | if (bfd_get_section_by_name (i->owner, ".init") != NULL | |
192 | || bfd_get_section_by_name (i->owner, ".fini") != NULL) | |
193 | { | |
194 | if (ini != NULL && *ini != s) | |
195 | { | |
196 | move_input_section (list, u, ini); | |
197 | if (small == ini) | |
198 | small = &s->header.next; | |
199 | ini = &s->header.next; | |
200 | continue; | |
201 | } | |
202 | if (small == ini) | |
203 | small = &s->header.next; | |
204 | ini = &s->header.next; | |
205 | break; | |
206 | } | |
207 | else if (ini == NULL) | |
208 | ini = u; | |
209 | ||
210 | if (ppc64_elf_has_small_toc_reloc (i)) | |
211 | { | |
212 | if (small != NULL && *small != s) | |
213 | { | |
214 | move_input_section (list, u, small); | |
215 | small = &s->header.next; | |
216 | continue; | |
217 | } | |
218 | small = &s->header.next; | |
219 | } | |
220 | else if (small == NULL) | |
221 | small = u; | |
222 | break; | |
223 | ||
224 | default: | |
225 | break; | |
226 | } | |
227 | u = &s->header.next; | |
228 | } | |
229 | } | |
230 | ||
ba761f19 AM |
231 | static void |
232 | prelim_size_sections (void) | |
233 | { | |
234 | if (expld.phase != lang_mark_phase_enum) | |
235 | { | |
236 | expld.phase = lang_mark_phase_enum; | |
237 | expld.dataseg.phase = exp_dataseg_none; | |
238 | one_lang_size_sections_pass (NULL, FALSE); | |
239 | /* We must not cache anything from the preliminary sizing. */ | |
240 | lang_reset_memory_regions (); | |
241 | } | |
242 | } | |
243 | ||
836c6af1 | 244 | static void |
7d8a3a28 | 245 | ppc_before_allocation (void) |
836c6af1 | 246 | { |
a015f5ec | 247 | if (stub_file != NULL) |
e0468e59 | 248 | { |
74f0fb50 | 249 | if (!no_opd_opt |
e7d1c40c | 250 | && !ppc64_elf_edit_opd (&link_info)) |
f7c46796 | 251 | einfo ("%X%P: can not edit %s: %E\n", "opd"); |
e5096e3f | 252 | |
e7d1c40c | 253 | if (ppc64_elf_tls_setup (&link_info) |
f13a99db | 254 | && !no_tls_opt) |
a015f5ec AM |
255 | { |
256 | /* Size the sections. This is premature, but we want to know the | |
257 | TLS segment layout so that certain optimizations can be done. */ | |
ba761f19 | 258 | prelim_size_sections (); |
a015f5ec | 259 | |
33c0ec9d | 260 | if (!ppc64_elf_tls_optimize (&link_info)) |
92b7a70f | 261 | einfo ("%X%P: TLS problem %E\n"); |
a015f5ec | 262 | } |
c5614fa4 AM |
263 | |
264 | if (!no_toc_opt | |
ba761f19 AM |
265 | && !link_info.relocatable) |
266 | { | |
267 | prelim_size_sections (); | |
268 | ||
269 | if (!ppc64_elf_edit_toc (&link_info)) | |
f7c46796 | 270 | einfo ("%X%P: can not edit %s: %E\n", "toc"); |
ba761f19 | 271 | } |
d43d0b53 AM |
272 | |
273 | if (!no_toc_sort) | |
274 | { | |
275 | lang_output_section_statement_type *toc_os; | |
276 | ||
277 | toc_os = lang_output_section_find (".got"); | |
278 | if (toc_os != NULL) | |
279 | sort_toc_sections (&toc_os->children, NULL, NULL); | |
280 | } | |
e0468e59 AM |
281 | } |
282 | ||
836c6af1 AM |
283 | gld${EMULATION_NAME}_before_allocation (); |
284 | } | |
285 | ||
9c1d81c1 AM |
286 | struct hook_stub_info |
287 | { | |
288 | lang_statement_list_type add; | |
289 | asection *input_section; | |
290 | }; | |
291 | ||
292 | /* Traverse the linker tree to find the spot where the stub goes. */ | |
293 | ||
b34976b6 | 294 | static bfd_boolean |
7d8a3a28 | 295 | hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) |
9c1d81c1 AM |
296 | { |
297 | lang_statement_union_type *l; | |
b34976b6 | 298 | bfd_boolean ret; |
9c1d81c1 AM |
299 | |
300 | for (; (l = *lp) != NULL; lp = &l->header.next) | |
301 | { | |
302 | switch (l->header.type) | |
303 | { | |
304 | case lang_constructors_statement_enum: | |
305 | ret = hook_in_stub (info, &constructor_list.head); | |
306 | if (ret) | |
307 | return ret; | |
308 | break; | |
309 | ||
310 | case lang_output_section_statement_enum: | |
311 | ret = hook_in_stub (info, | |
312 | &l->output_section_statement.children.head); | |
313 | if (ret) | |
314 | return ret; | |
315 | break; | |
316 | ||
317 | case lang_wild_statement_enum: | |
318 | ret = hook_in_stub (info, &l->wild_statement.children.head); | |
319 | if (ret) | |
320 | return ret; | |
321 | break; | |
322 | ||
323 | case lang_group_statement_enum: | |
324 | ret = hook_in_stub (info, &l->group_statement.children.head); | |
325 | if (ret) | |
326 | return ret; | |
327 | break; | |
328 | ||
329 | case lang_input_section_enum: | |
330 | if (l->input_section.section == info->input_section) | |
331 | { | |
332 | /* We've found our section. Insert the stub immediately | |
333 | before its associated input section. */ | |
334 | *lp = info->add.head; | |
335 | *(info->add.tail) = l; | |
b34976b6 | 336 | return TRUE; |
9c1d81c1 AM |
337 | } |
338 | break; | |
339 | ||
340 | case lang_data_statement_enum: | |
341 | case lang_reloc_statement_enum: | |
342 | case lang_object_symbols_statement_enum: | |
343 | case lang_output_statement_enum: | |
344 | case lang_target_statement_enum: | |
345 | case lang_input_statement_enum: | |
346 | case lang_assignment_statement_enum: | |
347 | case lang_padding_statement_enum: | |
348 | case lang_address_statement_enum: | |
349 | case lang_fill_statement_enum: | |
350 | break; | |
351 | ||
352 | default: | |
353 | FAIL (); | |
354 | break; | |
355 | } | |
356 | } | |
b34976b6 | 357 | return FALSE; |
9c1d81c1 AM |
358 | } |
359 | ||
360 | ||
361 | /* Call-back for ppc64_elf_size_stubs. */ | |
362 | ||
363 | /* Create a new stub section, and arrange for it to be linked | |
364 | immediately before INPUT_SECTION. */ | |
365 | ||
366 | static asection * | |
7d8a3a28 | 367 | ppc_add_stub_section (const char *stub_sec_name, asection *input_section) |
9c1d81c1 AM |
368 | { |
369 | asection *stub_sec; | |
370 | flagword flags; | |
371 | asection *output_section; | |
9c1d81c1 AM |
372 | lang_output_section_statement_type *os; |
373 | struct hook_stub_info info; | |
374 | ||
9c1d81c1 | 375 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
e4e0193e | 376 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_KEEP); |
9795b468 AM |
377 | stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd, |
378 | stub_sec_name, flags); | |
bd518033 | 379 | if (stub_sec == NULL |
794e51c0 AM |
380 | || !bfd_set_section_alignment (stub_file->the_bfd, stub_sec, |
381 | plt_stub_align > 5 ? plt_stub_align : 5)) | |
9c1d81c1 AM |
382 | goto err_ret; |
383 | ||
384 | output_section = input_section->output_section; | |
24ef1aa7 | 385 | os = lang_output_section_get (output_section); |
9c1d81c1 AM |
386 | |
387 | info.input_section = input_section; | |
388 | lang_list_init (&info.add); | |
b9c361e0 | 389 | lang_add_section (&info.add, stub_sec, NULL, os); |
9c1d81c1 AM |
390 | |
391 | if (info.add.head == NULL) | |
392 | goto err_ret; | |
393 | ||
68f8ff14 | 394 | stub_added = 1; |
9c1d81c1 AM |
395 | if (hook_in_stub (&info, &os->children.head)) |
396 | return stub_sec; | |
397 | ||
398 | err_ret: | |
399 | einfo ("%X%P: can not make stub section: %E\n"); | |
400 | return NULL; | |
401 | } | |
402 | ||
403 | ||
404 | /* Another call-back for ppc64_elf_size_stubs. */ | |
405 | ||
406 | static void | |
7d8a3a28 | 407 | ppc_layout_sections_again (void) |
9c1d81c1 AM |
408 | { |
409 | /* If we have changed sizes of the stub sections, then we need | |
410 | to recalculate all the section offsets. This may mean we need to | |
411 | add even more stubs. */ | |
8ded5a0f | 412 | gld${EMULATION_NAME}_map_segments (TRUE); |
1f808cd5 | 413 | |
1049f94e | 414 | if (!link_info.relocatable) |
1c865ab2 | 415 | ppc64_elf_set_toc (&link_info, link_info.output_bfd); |
eaeb0a9d AM |
416 | |
417 | need_laying_out = -1; | |
1f808cd5 AM |
418 | } |
419 | ||
9c1d81c1 | 420 | |
0b9a4d73 | 421 | static void |
7d8a3a28 | 422 | build_toc_list (lang_statement_union_type *statement) |
0b9a4d73 | 423 | { |
7b986e99 AM |
424 | if (statement->header.type == lang_input_section_enum) |
425 | { | |
426 | asection *i = statement->input_section.section; | |
427 | ||
dbaa2011 | 428 | if (i->sec_info_type != SEC_INFO_TYPE_JUST_SYMS |
7b986e99 AM |
429 | && (i->flags & SEC_EXCLUDE) == 0 |
430 | && i->output_section == toc_section) | |
927be08e AM |
431 | { |
432 | if (!ppc64_elf_next_toc_section (&link_info, i)) | |
433 | einfo ("%X%P: linker script separates .got and .toc\n"); | |
434 | } | |
7b986e99 | 435 | } |
0b9a4d73 AM |
436 | } |
437 | ||
438 | ||
9c1d81c1 | 439 | static void |
7d8a3a28 | 440 | build_section_lists (lang_statement_union_type *statement) |
9c1d81c1 | 441 | { |
7b986e99 | 442 | if (statement->header.type == lang_input_section_enum) |
9c1d81c1 | 443 | { |
7b986e99 AM |
444 | asection *i = statement->input_section.section; |
445 | ||
66be1055 | 446 | if (!((lang_input_statement_type *) i->owner->usrdata)->flags.just_syms |
7b986e99 AM |
447 | && (i->flags & SEC_EXCLUDE) == 0 |
448 | && i->output_section != NULL | |
f13a99db | 449 | && i->output_section->owner == link_info.output_bfd) |
7b986e99 AM |
450 | { |
451 | if (!ppc64_elf_next_input_section (&link_info, i)) | |
452 | einfo ("%X%P: can not size stub section: %E\n"); | |
453 | } | |
9c1d81c1 AM |
454 | } |
455 | } | |
456 | ||
fac1652d | 457 | |
eaeb0a9d AM |
458 | /* Call the back-end function to set TOC base after we have placed all |
459 | the sections. */ | |
1f808cd5 | 460 | static void |
eaeb0a9d | 461 | gld${EMULATION_NAME}_after_allocation (void) |
1f808cd5 | 462 | { |
eaeb0a9d AM |
463 | /* bfd_elf_discard_info just plays with data and debugging sections, |
464 | ie. doesn't affect code size, so we can delay resizing the | |
deb04cdb AM |
465 | sections. It's likely we'll resize everything in the process of |
466 | adding stubs. */ | |
f13a99db | 467 | if (bfd_elf_discard_info (link_info.output_bfd, &link_info)) |
deb04cdb AM |
468 | need_laying_out = 1; |
469 | ||
836c6af1 AM |
470 | /* If generating a relocatable output file, then we don't have any |
471 | stubs. */ | |
1049f94e | 472 | if (stub_file != NULL && !link_info.relocatable) |
1f808cd5 | 473 | { |
e7d1c40c | 474 | int ret = ppc64_elf_setup_section_lists (&link_info); |
92b7a70f AM |
475 | if (ret < 0) |
476 | einfo ("%X%P: can not size stub section: %E\n"); | |
477 | else if (ret > 0) | |
9c1d81c1 | 478 | { |
927be08e AM |
479 | ppc64_elf_start_multitoc_partition (&link_info); |
480 | ||
e7d1c40c | 481 | if (!params.no_multi_toc) |
927be08e AM |
482 | { |
483 | toc_section = bfd_get_section_by_name (link_info.output_bfd, | |
484 | ".got"); | |
485 | if (toc_section != NULL) | |
486 | lang_for_each_statement (build_toc_list); | |
487 | } | |
488 | ||
489 | if (ppc64_elf_layout_multitoc (&link_info) | |
e7d1c40c | 490 | && !params.no_multi_toc |
927be08e | 491 | && toc_section != NULL) |
0b9a4d73 AM |
492 | lang_for_each_statement (build_toc_list); |
493 | ||
927be08e | 494 | ppc64_elf_finish_multitoc_partition (&link_info); |
0b9a4d73 | 495 | |
836c6af1 | 496 | lang_for_each_statement (build_section_lists); |
9c1d81c1 | 497 | |
70cc837d AM |
498 | if (!ppc64_elf_check_init_fini (&link_info)) |
499 | einfo ("%P: .init/.fini fragments use differing TOC pointers\n"); | |
500 | ||
836c6af1 | 501 | /* Call into the BFD backend to do the real work. */ |
e7d1c40c | 502 | if (!ppc64_elf_size_stubs (&link_info)) |
92b7a70f | 503 | einfo ("%X%P: can not size stub section: %E\n"); |
1f808cd5 | 504 | } |
9c1d81c1 | 505 | } |
1f808cd5 | 506 | |
8ded5a0f | 507 | if (need_laying_out != -1) |
eaeb0a9d AM |
508 | { |
509 | gld${EMULATION_NAME}_map_segments (need_laying_out); | |
510 | ||
511 | if (!link_info.relocatable) | |
1c865ab2 | 512 | ppc64_elf_set_toc (&link_info, link_info.output_bfd); |
eaeb0a9d AM |
513 | } |
514 | } | |
515 | ||
516 | ||
517 | /* Final emulation specific call. */ | |
518 | ||
519 | static void | |
520 | gld${EMULATION_NAME}_finish (void) | |
521 | { | |
522 | /* e_entry on PowerPC64 points to the function descriptor for | |
523 | _start. If _start is missing, default to the first function | |
524 | descriptor in the .opd section. */ | |
525 | entry_section = ".opd"; | |
deb04cdb | 526 | |
68f8ff14 | 527 | if (stub_added) |
9c1d81c1 | 528 | { |
bda6c678 AM |
529 | char *msg = NULL; |
530 | char *line, *endline; | |
531 | ||
e7d1c40c AM |
532 | if (params.emit_stub_syms < 0) |
533 | params.emit_stub_syms = 1; | |
534 | if (!ppc64_elf_build_stubs (&link_info, config.stats ? &msg : NULL)) | |
9c1d81c1 | 535 | einfo ("%X%P: can not build stubs: %E\n"); |
bda6c678 | 536 | |
e922bcab | 537 | fflush (stdout); |
bda6c678 AM |
538 | for (line = msg; line != NULL; line = endline) |
539 | { | |
540 | endline = strchr (line, '\n'); | |
541 | if (endline != NULL) | |
542 | *endline++ = '\0'; | |
543 | fprintf (stderr, "%s: %s\n", program_name, line); | |
544 | } | |
e922bcab | 545 | fflush (stderr); |
bda6c678 AM |
546 | if (msg != NULL) |
547 | free (msg); | |
9c1d81c1 | 548 | } |
99877b66 AM |
549 | |
550 | ppc64_elf_restore_symbols (&link_info); | |
1e035701 | 551 | finish_default (); |
9c1d81c1 | 552 | } |
1f808cd5 | 553 | |
76dc39fe | 554 | |
fac1652d AM |
555 | /* Add a pattern matching ".foo" for every "foo" in a version script. |
556 | ||
557 | The reason for doing this is that many shared library version | |
558 | scripts export a selected set of functions or data symbols, forcing | |
559 | others local. eg. | |
560 | ||
561 | . VERS_1 { | |
562 | . global: | |
563 | . this; that; some; thing; | |
564 | . local: | |
565 | . *; | |
566 | . }; | |
567 | ||
568 | To make the above work for PowerPC64, we need to export ".this", | |
569 | ".that" and so on, otherwise only the function descriptor syms are | |
570 | exported. Lack of an exported function code sym may cause a | |
571 | definition to be pulled in from a static library. */ | |
572 | ||
7d8a3a28 AM |
573 | static struct bfd_elf_version_expr * |
574 | gld${EMULATION_NAME}_new_vers_pattern (struct bfd_elf_version_expr *entry) | |
fac1652d AM |
575 | { |
576 | struct bfd_elf_version_expr *dot_entry; | |
fac1652d AM |
577 | unsigned int len; |
578 | char *dot_pat; | |
579 | ||
b7b7fe3f | 580 | if (!dotsyms |
ae5a3597 AM |
581 | || entry->pattern[0] == '.' |
582 | || (!entry->literal && entry->pattern[0] == '*')) | |
fac1652d AM |
583 | return entry; |
584 | ||
7d8a3a28 | 585 | dot_entry = xmalloc (sizeof *dot_entry); |
108ba305 | 586 | *dot_entry = *entry; |
fac1652d | 587 | dot_entry->next = entry; |
ae5a3597 AM |
588 | len = strlen (entry->pattern) + 2; |
589 | dot_pat = xmalloc (len); | |
590 | dot_pat[0] = '.'; | |
591 | memcpy (dot_pat + 1, entry->pattern, len - 1); | |
592 | dot_entry->pattern = dot_pat; | |
71755fdf | 593 | dot_entry->script = 1; |
fac1652d AM |
594 | return dot_entry; |
595 | } | |
596 | ||
597 | ||
9c1d81c1 AM |
598 | /* Avoid processing the fake stub_file in vercheck, stat_needed and |
599 | check_needed routines. */ | |
1f808cd5 | 600 | |
7d8a3a28 | 601 | static void (*real_func) (lang_input_statement_type *); |
1f808cd5 | 602 | |
7d8a3a28 | 603 | static void ppc_for_each_input_file_wrapper (lang_input_statement_type *l) |
9c1d81c1 AM |
604 | { |
605 | if (l != stub_file) | |
606 | (*real_func) (l); | |
1f808cd5 | 607 | } |
9c1d81c1 AM |
608 | |
609 | static void | |
7d8a3a28 | 610 | ppc_lang_for_each_input_file (void (*func) (lang_input_statement_type *)) |
9c1d81c1 AM |
611 | { |
612 | real_func = func; | |
613 | lang_for_each_input_file (&ppc_for_each_input_file_wrapper); | |
614 | } | |
615 | ||
616 | #define lang_for_each_input_file ppc_lang_for_each_input_file | |
617 | ||
1f808cd5 AM |
618 | EOF |
619 | ||
dc27aea4 | 620 | if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then |
92b93329 | 621 | fragment <<EOF |
dc27aea4 AM |
622 | /* Special handling for embedded SPU executables. */ |
623 | extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *); | |
624 | static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *); | |
625 | ||
626 | static bfd_boolean | |
627 | ppc64_recognized_file (lang_input_statement_type *entry) | |
628 | { | |
629 | if (embedded_spu_file (entry, "-m64")) | |
630 | return TRUE; | |
631 | ||
632 | return gld${EMULATION_NAME}_load_symbols (entry); | |
633 | } | |
634 | EOF | |
635 | LDEMUL_RECOGNIZED_FILE=ppc64_recognized_file | |
636 | fi | |
637 | ||
9c1d81c1 AM |
638 | # Define some shell vars to insert bits of code into the standard elf |
639 | # parse_args and list_options functions. | |
640 | # | |
58d180e8 AM |
641 | PARSE_AND_LIST_PROLOGUE=${PARSE_AND_LIST_PROLOGUE}' |
642 | #define OPTION_STUBGROUP_SIZE 321 | |
9df0ef5f AM |
643 | #define OPTION_PLT_STATIC_CHAIN (OPTION_STUBGROUP_SIZE + 1) |
644 | #define OPTION_NO_PLT_STATIC_CHAIN (OPTION_PLT_STATIC_CHAIN + 1) | |
794e51c0 AM |
645 | #define OPTION_PLT_THREAD_SAFE (OPTION_NO_PLT_STATIC_CHAIN + 1) |
646 | #define OPTION_NO_PLT_THREAD_SAFE (OPTION_PLT_THREAD_SAFE + 1) | |
647 | #define OPTION_PLT_ALIGN (OPTION_NO_PLT_THREAD_SAFE + 1) | |
648 | #define OPTION_NO_PLT_ALIGN (OPTION_PLT_ALIGN + 1) | |
649 | #define OPTION_STUBSYMS (OPTION_NO_PLT_ALIGN + 1) | |
b02c4cfa | 650 | #define OPTION_NO_STUBSYMS (OPTION_STUBSYMS + 1) |
7d4c687d AM |
651 | #define OPTION_SAVRES (OPTION_NO_STUBSYMS + 1) |
652 | #define OPTION_NO_SAVRES (OPTION_SAVRES + 1) | |
653 | #define OPTION_DOTSYMS (OPTION_NO_SAVRES + 1) | |
fac1652d | 654 | #define OPTION_NO_DOTSYMS (OPTION_DOTSYMS + 1) |
e5096e3f | 655 | #define OPTION_NO_TLS_OPT (OPTION_NO_DOTSYMS + 1) |
a7f2871e AM |
656 | #define OPTION_NO_TLS_GET_ADDR_OPT (OPTION_NO_TLS_OPT + 1) |
657 | #define OPTION_NO_OPD_OPT (OPTION_NO_TLS_GET_ADDR_OPT + 1) | |
c5614fa4 | 658 | #define OPTION_NO_TOC_OPT (OPTION_NO_OPD_OPT + 1) |
4c52953f | 659 | #define OPTION_NO_MULTI_TOC (OPTION_NO_TOC_OPT + 1) |
d43d0b53 AM |
660 | #define OPTION_NO_TOC_SORT (OPTION_NO_MULTI_TOC + 1) |
661 | #define OPTION_NON_OVERLAPPING_OPD (OPTION_NO_TOC_SORT + 1) | |
9c1d81c1 AM |
662 | ' |
663 | ||
58d180e8 | 664 | PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}' |
9c1d81c1 | 665 | { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, |
9df0ef5f AM |
666 | { "plt-static-chain", no_argument, NULL, OPTION_PLT_STATIC_CHAIN }, |
667 | { "no-plt-static-chain", no_argument, NULL, OPTION_NO_PLT_STATIC_CHAIN }, | |
794e51c0 AM |
668 | { "plt-thread-safe", no_argument, NULL, OPTION_PLT_THREAD_SAFE }, |
669 | { "no-plt-thread-safe", no_argument, NULL, OPTION_NO_PLT_THREAD_SAFE }, | |
670 | { "plt-align", optional_argument, NULL, OPTION_PLT_ALIGN }, | |
671 | { "no-plt-align", no_argument, NULL, OPTION_NO_PLT_ALIGN }, | |
0b9a4d73 | 672 | { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS }, |
b02c4cfa | 673 | { "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS }, |
fac1652d AM |
674 | { "dotsyms", no_argument, NULL, OPTION_DOTSYMS }, |
675 | { "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS }, | |
7d4c687d AM |
676 | { "save-restore-funcs", no_argument, NULL, OPTION_SAVRES }, |
677 | { "no-save-restore-funcs", no_argument, NULL, OPTION_NO_SAVRES }, | |
e5096e3f | 678 | { "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT }, |
a7f2871e | 679 | { "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT }, |
c5614fa4 AM |
680 | { "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT }, |
681 | { "no-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT }, | |
4c52953f | 682 | { "no-multi-toc", no_argument, NULL, OPTION_NO_MULTI_TOC }, |
d43d0b53 | 683 | { "no-toc-sort", no_argument, NULL, OPTION_NO_TOC_SORT }, |
3f764659 | 684 | { "non-overlapping-opd", no_argument, NULL, OPTION_NON_OVERLAPPING_OPD }, |
9c1d81c1 AM |
685 | ' |
686 | ||
58d180e8 | 687 | PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}' |
9c1d81c1 | 688 | fprintf (file, _("\ |
442996ee AM |
689 | --stub-group-size=N Maximum size of a group of input sections that\n\ |
690 | can be handled by one stub section. A negative\n\ | |
691 | value locates all stubs before their branches\n\ | |
692 | (with a group size of -N), while a positive\n\ | |
693 | value allows two groups of input sections, one\n\ | |
694 | before, and one after each stub section.\n\ | |
695 | Values of +/-1 indicate the linker should\n\ | |
696 | choose suitable defaults.\n" | |
9c1d81c1 | 697 | )); |
fac1652d | 698 | fprintf (file, _("\ |
794e51c0 AM |
699 | --plt-static-chain PLT call stubs should load r11.${DEFAULT_PLT_STATIC_CHAIN- (default)}\n" |
700 | )); | |
701 | fprintf (file, _("\ | |
702 | --no-plt-static-chain PLT call stubs should not load r11.${DEFAULT_PLT_STATIC_CHAIN+ (default)}\n" | |
703 | )); | |
704 | fprintf (file, _("\ | |
705 | --plt-thread-safe PLT call stubs with load-load barrier.\n" | |
706 | )); | |
707 | fprintf (file, _("\ | |
708 | --no-plt-thread-safe PLT call stubs without barrier.\n" | |
709 | )); | |
710 | fprintf (file, _("\ | |
711 | --plt-align [=<align>] Align PLT call stubs to fit cache lines.\n" | |
9df0ef5f AM |
712 | )); |
713 | fprintf (file, _("\ | |
794e51c0 | 714 | --no-plt-align Dont'\''t align individual PLT call stubs.\n" |
9df0ef5f AM |
715 | )); |
716 | fprintf (file, _("\ | |
442996ee | 717 | --emit-stub-syms Label linker stubs with a symbol.\n" |
0b9a4d73 AM |
718 | )); |
719 | fprintf (file, _("\ | |
b02c4cfa AM |
720 | --no-emit-stub-syms Don'\''t label linker stubs with a symbol.\n" |
721 | )); | |
722 | fprintf (file, _("\ | |
442996ee AM |
723 | --dotsyms For every version pattern \"foo\" in a version\n\ |
724 | script, add \".foo\" so that function code\n\ | |
725 | symbols are treated the same as function\n\ | |
726 | descriptor symbols. Defaults to on.\n" | |
fac1652d AM |
727 | )); |
728 | fprintf (file, _("\ | |
442996ee | 729 | --no-dotsyms Don'\''t do anything special in version scripts.\n" |
fac1652d | 730 | )); |
e5096e3f | 731 | fprintf (file, _("\ |
7d4c687d AM |
732 | --save-restore-funcs Provide register save and restore routines used\n\ |
733 | by gcc -Os code. Defaults to on for normal\n\ | |
734 | final link, off for ld -r.\n" | |
735 | )); | |
736 | fprintf (file, _("\ | |
737 | --no-save-restore-funcs Don'\''t provide these routines.\n" | |
738 | )); | |
739 | fprintf (file, _("\ | |
442996ee | 740 | --no-tls-optimize Don'\''t try to optimize TLS accesses.\n" |
e5096e3f | 741 | )); |
3f764659 | 742 | fprintf (file, _("\ |
a7f2871e AM |
743 | --no-tls-get-addr-optimize Don'\''t use a special __tls_get_addr call.\n" |
744 | )); | |
745 | fprintf (file, _("\ | |
442996ee | 746 | --no-opd-optimize Don'\''t optimize the OPD section.\n" |
c5614fa4 AM |
747 | )); |
748 | fprintf (file, _("\ | |
442996ee | 749 | --no-toc-optimize Don'\''t optimize the TOC section.\n" |
c5614fa4 AM |
750 | )); |
751 | fprintf (file, _("\ | |
442996ee | 752 | --no-multi-toc Disallow automatic multiple toc sections.\n" |
4c52953f AM |
753 | )); |
754 | fprintf (file, _("\ | |
d43d0b53 AM |
755 | --no-toc-sort Don'\''t sort TOC and GOT sections.\n" |
756 | )); | |
757 | fprintf (file, _("\ | |
442996ee AM |
758 | --non-overlapping-opd Canonicalize .opd, so that there are no\n\ |
759 | overlapping .opd entries.\n" | |
3f764659 | 760 | )); |
9c1d81c1 AM |
761 | ' |
762 | ||
58d180e8 | 763 | PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}' |
9c1d81c1 AM |
764 | case OPTION_STUBGROUP_SIZE: |
765 | { | |
766 | const char *end; | |
e7d1c40c | 767 | params.group_size = bfd_scan_vma (optarg, &end, 0); |
9c1d81c1 AM |
768 | if (*end) |
769 | einfo (_("%P%F: invalid number `%s'\''\n"), optarg); | |
770 | } | |
771 | break; | |
fac1652d | 772 | |
9df0ef5f | 773 | case OPTION_PLT_STATIC_CHAIN: |
e7d1c40c | 774 | params.plt_static_chain = 1; |
9df0ef5f AM |
775 | break; |
776 | ||
777 | case OPTION_NO_PLT_STATIC_CHAIN: | |
e7d1c40c | 778 | params.plt_static_chain = 0; |
9df0ef5f AM |
779 | break; |
780 | ||
794e51c0 | 781 | case OPTION_PLT_THREAD_SAFE: |
e7d1c40c | 782 | params.plt_thread_safe = 1; |
794e51c0 AM |
783 | break; |
784 | ||
785 | case OPTION_NO_PLT_THREAD_SAFE: | |
e7d1c40c | 786 | params.plt_thread_safe = 0; |
794e51c0 AM |
787 | break; |
788 | ||
789 | case OPTION_PLT_ALIGN: | |
790 | if (optarg != NULL) | |
791 | { | |
792 | char *end; | |
793 | unsigned long val = strtoul (optarg, &end, 0); | |
794 | if (*end || val > 8) | |
795 | einfo (_("%P%F: invalid --plt-align `%s'\''\n"), optarg); | |
796 | plt_stub_align = val; | |
797 | } | |
798 | else | |
799 | plt_stub_align = 5; | |
800 | break; | |
801 | ||
802 | case OPTION_NO_PLT_ALIGN: | |
803 | plt_stub_align = 0; | |
804 | break; | |
805 | ||
0b9a4d73 | 806 | case OPTION_STUBSYMS: |
e7d1c40c | 807 | params.emit_stub_syms = 1; |
0b9a4d73 AM |
808 | break; |
809 | ||
b02c4cfa | 810 | case OPTION_NO_STUBSYMS: |
e7d1c40c | 811 | params.emit_stub_syms = 0; |
b02c4cfa AM |
812 | break; |
813 | ||
fac1652d | 814 | case OPTION_DOTSYMS: |
e5096e3f | 815 | dotsyms = 1; |
fac1652d AM |
816 | break; |
817 | ||
818 | case OPTION_NO_DOTSYMS: | |
e5096e3f AM |
819 | dotsyms = 0; |
820 | break; | |
821 | ||
7d4c687d AM |
822 | case OPTION_SAVRES: |
823 | params.save_restore_funcs = 1; | |
824 | break; | |
825 | ||
826 | case OPTION_NO_SAVRES: | |
827 | params.save_restore_funcs = 0; | |
828 | break; | |
829 | ||
e5096e3f | 830 | case OPTION_NO_TLS_OPT: |
c5614fa4 AM |
831 | no_tls_opt = 1; |
832 | break; | |
833 | ||
a7f2871e | 834 | case OPTION_NO_TLS_GET_ADDR_OPT: |
e7d1c40c | 835 | params.no_tls_get_addr_opt = 1; |
a7f2871e AM |
836 | break; |
837 | ||
c5614fa4 AM |
838 | case OPTION_NO_OPD_OPT: |
839 | no_opd_opt = 1; | |
840 | break; | |
841 | ||
842 | case OPTION_NO_TOC_OPT: | |
843 | no_toc_opt = 1; | |
fac1652d | 844 | break; |
3f764659 | 845 | |
4c52953f | 846 | case OPTION_NO_MULTI_TOC: |
e7d1c40c | 847 | params.no_multi_toc = 1; |
4c52953f AM |
848 | break; |
849 | ||
d43d0b53 AM |
850 | case OPTION_NO_TOC_SORT: |
851 | no_toc_sort = 1; | |
852 | break; | |
853 | ||
3f764659 | 854 | case OPTION_NON_OVERLAPPING_OPD: |
e7d1c40c | 855 | params.non_overlapping_opd = 1; |
3f764659 | 856 | break; |
f05eb3b7 AM |
857 | |
858 | case OPTION_TRADITIONAL_FORMAT: | |
859 | no_tls_opt = 1; | |
e7d1c40c | 860 | params.no_tls_get_addr_opt = 1; |
f05eb3b7 AM |
861 | no_opd_opt = 1; |
862 | no_toc_opt = 1; | |
e7d1c40c | 863 | params.no_multi_toc = 1; |
f05eb3b7 | 864 | no_toc_sort = 1; |
e7d1c40c | 865 | params.plt_static_chain = 1; |
f05eb3b7 | 866 | return FALSE; |
9c1d81c1 AM |
867 | ' |
868 | ||
1f808cd5 AM |
869 | # Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation |
870 | # | |
836c6af1 | 871 | LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation |
1f808cd5 | 872 | LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
8ded5a0f | 873 | LDEMUL_FINISH=gld${EMULATION_NAME}_finish |
9c1d81c1 | 874 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements |
fac1652d | 875 | LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern |