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1f808cd5 | 1 | # This shell script emits a C file. -*- C -*- |
219d1afa | 2 | # Copyright (C) 2002-2018 Free Software Foundation, Inc. |
1f808cd5 | 3 | # |
f96b4a7b | 4 | # This file is part of the GNU Binutils. |
1f808cd5 AM |
5 | # |
6 | # This program is free software; you can redistribute it and/or modify | |
7 | # it under the terms of the GNU General Public License as published by | |
f96b4a7b | 8 | # the Free Software Foundation; either version 3 of the License, or |
1f808cd5 AM |
9 | # (at your option) any later version. |
10 | # | |
11 | # This program is distributed in the hope that it will be useful, | |
12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | # GNU General Public License for more details. | |
15 | # | |
16 | # You should have received a copy of the GNU General Public License | |
17 | # along with this program; if not, write to the Free Software | |
f96b4a7b NC |
18 | # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | # MA 02110-1301, USA. | |
1f808cd5 AM |
20 | # |
21 | ||
22 | # This file is sourced from elf32.em, and defines extra powerpc64-elf | |
23 | # specific routines. | |
24 | # | |
92b93329 | 25 | fragment <<EOF |
1f808cd5 | 26 | |
9c1d81c1 | 27 | #include "ldctor.h" |
83490352 | 28 | #include "elf-bfd.h" |
1f808cd5 | 29 | #include "elf64-ppc.h" |
f05eb3b7 | 30 | #include "ldlex.h" |
7341d5e2 | 31 | #include "elf/ppc64.h" |
1f808cd5 | 32 | |
e7d1c40c AM |
33 | static asection *ppc_add_stub_section (const char *, asection *); |
34 | static void ppc_layout_sections_again (void); | |
35 | ||
36 | static struct ppc64_elf_params params = { NULL, | |
37 | &ppc_add_stub_section, | |
38 | &ppc_layout_sections_again, | |
7c9cf415 | 39 | 1, -1, 0, |
2420fff6 | 40 | ${DEFAULT_PLT_STATIC_CHAIN-0}, -1, 5, |
407aa07c | 41 | -1, 0, -1, -1, 0}; |
e7d1c40c | 42 | |
9c1d81c1 AM |
43 | /* Fake input file for stubs. */ |
44 | static lang_input_statement_type *stub_file; | |
45 | ||
deb04cdb AM |
46 | /* Whether we need to call ppc_layout_sections_again. */ |
47 | static int need_laying_out = 0; | |
48 | ||
fac1652d AM |
49 | /* Whether to add ".foo" entries for each "foo" in a version script. */ |
50 | static int dotsyms = 1; | |
51 | ||
e5096e3f | 52 | /* Whether to run tls optimization. */ |
c5614fa4 AM |
53 | static int no_tls_opt = 0; |
54 | ||
55 | /* Whether to run opd optimization. */ | |
56 | static int no_opd_opt = 0; | |
57 | ||
58 | /* Whether to run toc optimization. */ | |
59 | static int no_toc_opt = 0; | |
e5096e3f | 60 | |
d43d0b53 AM |
61 | /* Whether to sort input toc and got sections. */ |
62 | static int no_toc_sort = 0; | |
63 | ||
6c2573b7 AM |
64 | /* Input .toc sections will be placed in this output section. */ |
65 | static const char *toc_section_name = ".got"; | |
0b9a4d73 AM |
66 | static asection *toc_section = 0; |
67 | ||
9c1d81c1 AM |
68 | /* This is called before the input files are opened. We create a new |
69 | fake input file to hold the stub sections. */ | |
70 | ||
71 | static void | |
7d8a3a28 | 72 | ppc_create_output_section_statements (void) |
9c1d81c1 | 73 | { |
5503fea1 | 74 | if (!(bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour |
4dfe6ac6 | 75 | && elf_object_id (link_info.output_bfd) == PPC64_ELF_DATA)) |
a015f5ec AM |
76 | return; |
77 | ||
b9cf773d AM |
78 | link_info.wrap_char = '.'; |
79 | ||
9c1d81c1 AM |
80 | stub_file = lang_add_input_file ("linker stubs", |
81 | lang_input_file_is_fake_enum, | |
82 | NULL); | |
f13a99db | 83 | stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd); |
9c1d81c1 AM |
84 | if (stub_file->the_bfd == NULL |
85 | || !bfd_set_arch_mach (stub_file->the_bfd, | |
f13a99db AM |
86 | bfd_get_arch (link_info.output_bfd), |
87 | bfd_get_mach (link_info.output_bfd))) | |
9c1d81c1 | 88 | { |
d003af55 | 89 | einfo (_("%F%P: can not create BFD: %E\n")); |
9c1d81c1 AM |
90 | return; |
91 | } | |
92 | ||
d457dcf6 | 93 | stub_file->the_bfd->flags |= BFD_LINKER_CREATED; |
9c1d81c1 | 94 | ldlang_add_file (stub_file); |
e7d1c40c | 95 | params.stub_bfd = stub_file->the_bfd; |
7d4c687d | 96 | if (params.save_restore_funcs < 0) |
0e1862bb | 97 | params.save_restore_funcs = !bfd_link_relocatable (&link_info); |
e7d1c40c | 98 | if (!ppc64_elf_init_stub_bfd (&link_info, ¶ms)) |
d003af55 | 99 | einfo (_("%F%P: can not init BFD: %E\n")); |
9c1d81c1 AM |
100 | } |
101 | ||
dbd1e97e AM |
102 | /* Called after opening files but before mapping sections. */ |
103 | ||
104 | static void | |
105 | ppc_after_open (void) | |
106 | { | |
107 | if (stub_file != NULL && link_info.relro && params.object_in_toc) | |
108 | { | |
109 | /* We have a .toc section that might be written to at run time. | |
110 | Don't put .toc into the .got output section. */ | |
111 | lang_output_section_statement_type *got; | |
112 | ||
113 | got = lang_output_section_find (".got"); | |
114 | if (got != NULL) | |
115 | { | |
116 | lang_statement_union_type *s; | |
117 | for (s = got->children.head; s != NULL; s = s->header.next) | |
118 | if (s->header.type == lang_wild_statement_enum | |
119 | && s->wild_statement.filename == NULL) | |
120 | { | |
121 | struct wildcard_list **i = &s->wild_statement.section_list; | |
122 | while (*i != NULL) | |
123 | if (strcmp ((*i)->spec.name, ".toc") == 0) | |
124 | *i = (*i)->next; | |
125 | else | |
126 | i = &(*i)->next; | |
127 | } | |
6c2573b7 AM |
128 | /* Instead, .toc input sections will be mapped to the |
129 | read/write .toc output section. If user scripts don't | |
130 | provide one then we'll lose toc sorting and multi-toc. */ | |
131 | toc_section_name = ".toc"; | |
dbd1e97e AM |
132 | } |
133 | } | |
134 | gld${EMULATION_NAME}_after_open (); | |
135 | } | |
136 | ||
d43d0b53 AM |
137 | /* Move the input section statement at *U which happens to be on LIST |
138 | to be just before *TO. */ | |
139 | ||
140 | static void | |
141 | move_input_section (lang_statement_list_type *list, | |
142 | lang_statement_union_type **u, | |
143 | lang_statement_union_type **to) | |
144 | { | |
145 | lang_statement_union_type *s = *u; | |
146 | asection *i = s->input_section.section; | |
147 | asection *p, *n; | |
148 | ||
149 | /* Snip the input section from the statement list. If it was the | |
150 | last statement, fix the list tail pointer. */ | |
151 | *u = s->header.next; | |
152 | if (*u == NULL) | |
153 | list->tail = u; | |
154 | /* Add it back in the new position. */ | |
155 | s->header.next = *to; | |
156 | *to = s; | |
157 | if (list->tail == to) | |
158 | list->tail = &s->header.next; | |
159 | ||
160 | /* Trim I off the bfd map_head/map_tail doubly linked lists. */ | |
161 | n = i->map_head.s; | |
162 | p = i->map_tail.s; | |
163 | (p != NULL ? p : i->output_section)->map_head.s = n; | |
164 | (n != NULL ? n : i->output_section)->map_tail.s = p; | |
165 | ||
166 | /* Add I back on in its new position. */ | |
167 | if (s->header.next->header.type == lang_input_section_enum) | |
168 | { | |
169 | n = s->header.next->input_section.section; | |
170 | p = n->map_tail.s; | |
171 | } | |
172 | else | |
173 | { | |
174 | /* If the next statement is not an input section statement then | |
175 | TO must point at the previous input section statement | |
176 | header.next field. */ | |
177 | lang_input_section_type *prev = (lang_input_section_type *) | |
178 | ((char *) to - offsetof (lang_statement_union_type, header.next)); | |
179 | ||
180 | ASSERT (prev->header.type == lang_input_section_enum); | |
181 | p = prev->section; | |
182 | n = p->map_head.s; | |
183 | } | |
184 | i->map_head.s = n; | |
185 | i->map_tail.s = p; | |
186 | (p != NULL ? p : i->output_section)->map_head.s = i; | |
187 | (n != NULL ? n : i->output_section)->map_tail.s = i; | |
188 | } | |
189 | ||
190 | /* Sort input section statements in the linker script tree rooted at | |
191 | LIST so that those whose owning bfd happens to have a section | |
192 | called .init or .fini are placed first. Place any TOC sections | |
193 | referenced by small TOC relocs next, with TOC sections referenced | |
194 | only by bigtoc relocs last. */ | |
195 | ||
196 | static void | |
197 | sort_toc_sections (lang_statement_list_type *list, | |
198 | lang_statement_union_type **ini, | |
199 | lang_statement_union_type **small) | |
200 | { | |
201 | lang_statement_union_type *s, **u; | |
202 | asection *i; | |
203 | ||
204 | u = &list->head; | |
205 | while ((s = *u) != NULL) | |
206 | { | |
207 | switch (s->header.type) | |
208 | { | |
209 | case lang_wild_statement_enum: | |
210 | sort_toc_sections (&s->wild_statement.children, ini, small); | |
211 | break; | |
212 | ||
213 | case lang_group_statement_enum: | |
214 | sort_toc_sections (&s->group_statement.children, ini, small); | |
215 | break; | |
216 | ||
217 | case lang_input_section_enum: | |
218 | i = s->input_section.section; | |
219 | /* Leave the stub_file .got where it is. We put the .got | |
220 | header there. */ | |
221 | if (i->owner == stub_file->the_bfd) | |
222 | break; | |
223 | if (bfd_get_section_by_name (i->owner, ".init") != NULL | |
224 | || bfd_get_section_by_name (i->owner, ".fini") != NULL) | |
225 | { | |
226 | if (ini != NULL && *ini != s) | |
227 | { | |
228 | move_input_section (list, u, ini); | |
229 | if (small == ini) | |
230 | small = &s->header.next; | |
231 | ini = &s->header.next; | |
232 | continue; | |
233 | } | |
234 | if (small == ini) | |
235 | small = &s->header.next; | |
236 | ini = &s->header.next; | |
237 | break; | |
238 | } | |
239 | else if (ini == NULL) | |
240 | ini = u; | |
241 | ||
242 | if (ppc64_elf_has_small_toc_reloc (i)) | |
243 | { | |
244 | if (small != NULL && *small != s) | |
245 | { | |
246 | move_input_section (list, u, small); | |
247 | small = &s->header.next; | |
248 | continue; | |
249 | } | |
250 | small = &s->header.next; | |
251 | } | |
252 | else if (small == NULL) | |
253 | small = u; | |
254 | break; | |
255 | ||
256 | default: | |
257 | break; | |
258 | } | |
259 | u = &s->header.next; | |
260 | } | |
261 | } | |
262 | ||
ba761f19 AM |
263 | static void |
264 | prelim_size_sections (void) | |
265 | { | |
266 | if (expld.phase != lang_mark_phase_enum) | |
267 | { | |
268 | expld.phase = lang_mark_phase_enum; | |
58e6cc77 | 269 | expld.dataseg.phase = exp_seg_none; |
ba761f19 AM |
270 | one_lang_size_sections_pass (NULL, FALSE); |
271 | /* We must not cache anything from the preliminary sizing. */ | |
272 | lang_reset_memory_regions (); | |
273 | } | |
274 | } | |
275 | ||
836c6af1 | 276 | static void |
7d8a3a28 | 277 | ppc_before_allocation (void) |
836c6af1 | 278 | { |
a015f5ec | 279 | if (stub_file != NULL) |
e0468e59 | 280 | { |
74f0fb50 | 281 | if (!no_opd_opt |
e7d1c40c | 282 | && !ppc64_elf_edit_opd (&link_info)) |
d003af55 | 283 | einfo (_("%X%P: can not edit %s: %E\n"), "opd"); |
e5096e3f | 284 | |
e7d1c40c | 285 | if (ppc64_elf_tls_setup (&link_info) |
f13a99db | 286 | && !no_tls_opt) |
a015f5ec AM |
287 | { |
288 | /* Size the sections. This is premature, but we want to know the | |
289 | TLS segment layout so that certain optimizations can be done. */ | |
ba761f19 | 290 | prelim_size_sections (); |
a015f5ec | 291 | |
33c0ec9d | 292 | if (!ppc64_elf_tls_optimize (&link_info)) |
d003af55 | 293 | einfo (_("%X%P: TLS problem %E\n")); |
a015f5ec | 294 | } |
c5614fa4 AM |
295 | |
296 | if (!no_toc_opt | |
0e1862bb | 297 | && !bfd_link_relocatable (&link_info)) |
ba761f19 AM |
298 | { |
299 | prelim_size_sections (); | |
300 | ||
301 | if (!ppc64_elf_edit_toc (&link_info)) | |
d003af55 | 302 | einfo (_("%X%P: can not edit %s: %E\n"), "toc"); |
ba761f19 | 303 | } |
d43d0b53 AM |
304 | |
305 | if (!no_toc_sort) | |
306 | { | |
307 | lang_output_section_statement_type *toc_os; | |
308 | ||
6c2573b7 | 309 | toc_os = lang_output_section_find (toc_section_name); |
d43d0b53 AM |
310 | if (toc_os != NULL) |
311 | sort_toc_sections (&toc_os->children, NULL, NULL); | |
312 | } | |
e0468e59 AM |
313 | } |
314 | ||
836c6af1 AM |
315 | gld${EMULATION_NAME}_before_allocation (); |
316 | } | |
317 | ||
9c1d81c1 AM |
318 | struct hook_stub_info |
319 | { | |
320 | lang_statement_list_type add; | |
321 | asection *input_section; | |
322 | }; | |
323 | ||
324 | /* Traverse the linker tree to find the spot where the stub goes. */ | |
325 | ||
b34976b6 | 326 | static bfd_boolean |
7d8a3a28 | 327 | hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) |
9c1d81c1 AM |
328 | { |
329 | lang_statement_union_type *l; | |
b34976b6 | 330 | bfd_boolean ret; |
9c1d81c1 AM |
331 | |
332 | for (; (l = *lp) != NULL; lp = &l->header.next) | |
333 | { | |
334 | switch (l->header.type) | |
335 | { | |
336 | case lang_constructors_statement_enum: | |
337 | ret = hook_in_stub (info, &constructor_list.head); | |
338 | if (ret) | |
339 | return ret; | |
340 | break; | |
341 | ||
342 | case lang_output_section_statement_enum: | |
343 | ret = hook_in_stub (info, | |
344 | &l->output_section_statement.children.head); | |
345 | if (ret) | |
346 | return ret; | |
347 | break; | |
348 | ||
349 | case lang_wild_statement_enum: | |
350 | ret = hook_in_stub (info, &l->wild_statement.children.head); | |
351 | if (ret) | |
352 | return ret; | |
353 | break; | |
354 | ||
355 | case lang_group_statement_enum: | |
356 | ret = hook_in_stub (info, &l->group_statement.children.head); | |
357 | if (ret) | |
358 | return ret; | |
359 | break; | |
360 | ||
361 | case lang_input_section_enum: | |
362 | if (l->input_section.section == info->input_section) | |
363 | { | |
364 | /* We've found our section. Insert the stub immediately | |
365 | before its associated input section. */ | |
366 | *lp = info->add.head; | |
367 | *(info->add.tail) = l; | |
b34976b6 | 368 | return TRUE; |
9c1d81c1 AM |
369 | } |
370 | break; | |
371 | ||
372 | case lang_data_statement_enum: | |
373 | case lang_reloc_statement_enum: | |
374 | case lang_object_symbols_statement_enum: | |
375 | case lang_output_statement_enum: | |
376 | case lang_target_statement_enum: | |
377 | case lang_input_statement_enum: | |
378 | case lang_assignment_statement_enum: | |
379 | case lang_padding_statement_enum: | |
380 | case lang_address_statement_enum: | |
381 | case lang_fill_statement_enum: | |
382 | break; | |
383 | ||
384 | default: | |
385 | FAIL (); | |
386 | break; | |
387 | } | |
388 | } | |
b34976b6 | 389 | return FALSE; |
9c1d81c1 AM |
390 | } |
391 | ||
392 | ||
393 | /* Call-back for ppc64_elf_size_stubs. */ | |
394 | ||
395 | /* Create a new stub section, and arrange for it to be linked | |
396 | immediately before INPUT_SECTION. */ | |
397 | ||
398 | static asection * | |
7d8a3a28 | 399 | ppc_add_stub_section (const char *stub_sec_name, asection *input_section) |
9c1d81c1 AM |
400 | { |
401 | asection *stub_sec; | |
402 | flagword flags; | |
403 | asection *output_section; | |
9c1d81c1 AM |
404 | lang_output_section_statement_type *os; |
405 | struct hook_stub_info info; | |
406 | ||
9c1d81c1 | 407 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
e4e0193e | 408 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_KEEP); |
9795b468 AM |
409 | stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd, |
410 | stub_sec_name, flags); | |
bd518033 | 411 | if (stub_sec == NULL |
794e51c0 | 412 | || !bfd_set_section_alignment (stub_file->the_bfd, stub_sec, |
e05fa0ba AM |
413 | (params.plt_stub_align > 5 |
414 | ? params.plt_stub_align | |
9e390558 AM |
415 | : params.plt_stub_align < -5 |
416 | ? -params.plt_stub_align | |
e05fa0ba | 417 | : 5))) |
9c1d81c1 AM |
418 | goto err_ret; |
419 | ||
420 | output_section = input_section->output_section; | |
24ef1aa7 | 421 | os = lang_output_section_get (output_section); |
9c1d81c1 AM |
422 | |
423 | info.input_section = input_section; | |
424 | lang_list_init (&info.add); | |
b9c361e0 | 425 | lang_add_section (&info.add, stub_sec, NULL, os); |
9c1d81c1 AM |
426 | |
427 | if (info.add.head == NULL) | |
428 | goto err_ret; | |
429 | ||
430 | if (hook_in_stub (&info, &os->children.head)) | |
431 | return stub_sec; | |
432 | ||
433 | err_ret: | |
d003af55 | 434 | einfo (_("%X%P: can not make stub section: %E\n")); |
9c1d81c1 AM |
435 | return NULL; |
436 | } | |
437 | ||
438 | ||
439 | /* Another call-back for ppc64_elf_size_stubs. */ | |
440 | ||
441 | static void | |
7d8a3a28 | 442 | ppc_layout_sections_again (void) |
9c1d81c1 AM |
443 | { |
444 | /* If we have changed sizes of the stub sections, then we need | |
445 | to recalculate all the section offsets. This may mean we need to | |
446 | add even more stubs. */ | |
8ded5a0f | 447 | gld${EMULATION_NAME}_map_segments (TRUE); |
1f808cd5 | 448 | |
0e1862bb | 449 | if (!bfd_link_relocatable (&link_info)) |
1c865ab2 | 450 | ppc64_elf_set_toc (&link_info, link_info.output_bfd); |
eaeb0a9d AM |
451 | |
452 | need_laying_out = -1; | |
1f808cd5 AM |
453 | } |
454 | ||
9c1d81c1 | 455 | |
0b9a4d73 | 456 | static void |
7d8a3a28 | 457 | build_toc_list (lang_statement_union_type *statement) |
0b9a4d73 | 458 | { |
7b986e99 AM |
459 | if (statement->header.type == lang_input_section_enum) |
460 | { | |
461 | asection *i = statement->input_section.section; | |
462 | ||
dbaa2011 | 463 | if (i->sec_info_type != SEC_INFO_TYPE_JUST_SYMS |
7b986e99 AM |
464 | && (i->flags & SEC_EXCLUDE) == 0 |
465 | && i->output_section == toc_section) | |
927be08e AM |
466 | { |
467 | if (!ppc64_elf_next_toc_section (&link_info, i)) | |
d003af55 | 468 | einfo (_("%X%P: linker script separates .got and .toc\n")); |
927be08e | 469 | } |
7b986e99 | 470 | } |
0b9a4d73 AM |
471 | } |
472 | ||
473 | ||
9c1d81c1 | 474 | static void |
7d8a3a28 | 475 | build_section_lists (lang_statement_union_type *statement) |
9c1d81c1 | 476 | { |
7b986e99 | 477 | if (statement->header.type == lang_input_section_enum) |
9c1d81c1 | 478 | { |
7b986e99 AM |
479 | asection *i = statement->input_section.section; |
480 | ||
66be1055 | 481 | if (!((lang_input_statement_type *) i->owner->usrdata)->flags.just_syms |
7b986e99 AM |
482 | && (i->flags & SEC_EXCLUDE) == 0 |
483 | && i->output_section != NULL | |
f13a99db | 484 | && i->output_section->owner == link_info.output_bfd) |
7b986e99 AM |
485 | { |
486 | if (!ppc64_elf_next_input_section (&link_info, i)) | |
d003af55 | 487 | einfo (_("%X%P: can not size stub section: %E\n")); |
7b986e99 | 488 | } |
9c1d81c1 AM |
489 | } |
490 | } | |
491 | ||
fac1652d | 492 | |
eaeb0a9d AM |
493 | /* Call the back-end function to set TOC base after we have placed all |
494 | the sections. */ | |
1f808cd5 | 495 | static void |
eaeb0a9d | 496 | gld${EMULATION_NAME}_after_allocation (void) |
1f808cd5 | 497 | { |
75938853 AM |
498 | int ret; |
499 | ||
836c6af1 AM |
500 | /* If generating a relocatable output file, then we don't have any |
501 | stubs. */ | |
0e1862bb | 502 | if (stub_file != NULL && !bfd_link_relocatable (&link_info)) |
1f808cd5 | 503 | { |
75938853 | 504 | ret = ppc64_elf_setup_section_lists (&link_info); |
92b7a70f | 505 | if (ret < 0) |
d003af55 | 506 | einfo (_("%X%P: can not size stub section: %E\n")); |
da44f4e5 | 507 | else |
9c1d81c1 | 508 | { |
927be08e AM |
509 | ppc64_elf_start_multitoc_partition (&link_info); |
510 | ||
e7d1c40c | 511 | if (!params.no_multi_toc) |
927be08e AM |
512 | { |
513 | toc_section = bfd_get_section_by_name (link_info.output_bfd, | |
6c2573b7 | 514 | toc_section_name); |
927be08e AM |
515 | if (toc_section != NULL) |
516 | lang_for_each_statement (build_toc_list); | |
517 | } | |
518 | ||
519 | if (ppc64_elf_layout_multitoc (&link_info) | |
e7d1c40c | 520 | && !params.no_multi_toc |
927be08e | 521 | && toc_section != NULL) |
0b9a4d73 AM |
522 | lang_for_each_statement (build_toc_list); |
523 | ||
927be08e | 524 | ppc64_elf_finish_multitoc_partition (&link_info); |
0b9a4d73 | 525 | |
836c6af1 | 526 | lang_for_each_statement (build_section_lists); |
9c1d81c1 | 527 | |
70cc837d | 528 | if (!ppc64_elf_check_init_fini (&link_info)) |
d003af55 | 529 | einfo (_("%P: .init/.fini fragments use differing TOC pointers\n")); |
70cc837d | 530 | |
836c6af1 | 531 | /* Call into the BFD backend to do the real work. */ |
e7d1c40c | 532 | if (!ppc64_elf_size_stubs (&link_info)) |
d003af55 | 533 | einfo (_("%X%P: can not size stub section: %E\n")); |
1f808cd5 | 534 | } |
9c1d81c1 | 535 | } |
1f808cd5 | 536 | |
da44f4e5 AM |
537 | /* We can't parse and merge .eh_frame until the glink .eh_frame has |
538 | been generated. Otherwise the glink .eh_frame CIE won't be | |
539 | merged with other CIEs, and worse, the glink .eh_frame FDEs won't | |
540 | be listed in .eh_frame_hdr. */ | |
541 | ret = bfd_elf_discard_info (link_info.output_bfd, &link_info); | |
542 | if (ret < 0) | |
543 | { | |
d003af55 | 544 | einfo (_("%X%P: .eh_frame/.stab edit: %E\n")); |
da44f4e5 AM |
545 | return; |
546 | } | |
547 | else if (ret > 0) | |
548 | need_laying_out = 1; | |
549 | ||
44bd1acd AM |
550 | /* Call map_segments regardless of the state of need_laying_out. |
551 | need_laying_out set to -1 means we have just laid everything out, | |
552 | but ppc64_elf_size_stubs strips .branch_lt and .eh_frame if | |
553 | unneeded, after ppc_layout_sections_again. Another call removes | |
554 | these sections from the segment map. Their presence is | |
555 | innocuous except for confusing ELF_SECTION_IN_SEGMENT. */ | |
556 | gld${EMULATION_NAME}_map_segments (need_laying_out > 0); | |
557 | ||
0e1862bb | 558 | if (need_laying_out != -1 && !bfd_link_relocatable (&link_info)) |
44bd1acd | 559 | ppc64_elf_set_toc (&link_info, link_info.output_bfd); |
eaeb0a9d AM |
560 | } |
561 | ||
562 | ||
563 | /* Final emulation specific call. */ | |
564 | ||
565 | static void | |
566 | gld${EMULATION_NAME}_finish (void) | |
567 | { | |
7341d5e2 AM |
568 | char *msg = NULL; |
569 | char *line, *endline; | |
570 | ||
eaeb0a9d AM |
571 | /* e_entry on PowerPC64 points to the function descriptor for |
572 | _start. If _start is missing, default to the first function | |
573 | descriptor in the .opd section. */ | |
459609d6 AM |
574 | if (stub_file != NULL |
575 | && (elf_elfheader (link_info.output_bfd)->e_flags & EF_PPC64_ABI) == 1) | |
7341d5e2 AM |
576 | entry_section = ".opd"; |
577 | ||
578 | if (params.emit_stub_syms < 0) | |
579 | params.emit_stub_syms = 1; | |
580 | if (stub_file != NULL | |
0e1862bb | 581 | && !bfd_link_relocatable (&link_info) |
7341d5e2 | 582 | && !ppc64_elf_build_stubs (&link_info, config.stats ? &msg : NULL)) |
d003af55 | 583 | einfo (_("%X%P: can not build stubs: %E\n")); |
7341d5e2 AM |
584 | |
585 | fflush (stdout); | |
586 | for (line = msg; line != NULL; line = endline) | |
9c1d81c1 | 587 | { |
7341d5e2 AM |
588 | endline = strchr (line, '\n'); |
589 | if (endline != NULL) | |
590 | *endline++ = '\0'; | |
591 | fprintf (stderr, "%s: %s\n", program_name, line); | |
9c1d81c1 | 592 | } |
7341d5e2 AM |
593 | fflush (stderr); |
594 | if (msg != NULL) | |
595 | free (msg); | |
99877b66 | 596 | |
1e035701 | 597 | finish_default (); |
9c1d81c1 | 598 | } |
1f808cd5 | 599 | |
76dc39fe | 600 | |
fac1652d AM |
601 | /* Add a pattern matching ".foo" for every "foo" in a version script. |
602 | ||
603 | The reason for doing this is that many shared library version | |
604 | scripts export a selected set of functions or data symbols, forcing | |
605 | others local. eg. | |
606 | ||
607 | . VERS_1 { | |
608 | . global: | |
609 | . this; that; some; thing; | |
610 | . local: | |
611 | . *; | |
612 | . }; | |
613 | ||
614 | To make the above work for PowerPC64, we need to export ".this", | |
615 | ".that" and so on, otherwise only the function descriptor syms are | |
616 | exported. Lack of an exported function code sym may cause a | |
617 | definition to be pulled in from a static library. */ | |
618 | ||
7d8a3a28 AM |
619 | static struct bfd_elf_version_expr * |
620 | gld${EMULATION_NAME}_new_vers_pattern (struct bfd_elf_version_expr *entry) | |
fac1652d AM |
621 | { |
622 | struct bfd_elf_version_expr *dot_entry; | |
fac1652d AM |
623 | unsigned int len; |
624 | char *dot_pat; | |
625 | ||
b7b7fe3f | 626 | if (!dotsyms |
ae5a3597 AM |
627 | || entry->pattern[0] == '.' |
628 | || (!entry->literal && entry->pattern[0] == '*')) | |
fac1652d AM |
629 | return entry; |
630 | ||
7d8a3a28 | 631 | dot_entry = xmalloc (sizeof *dot_entry); |
108ba305 | 632 | *dot_entry = *entry; |
fac1652d | 633 | dot_entry->next = entry; |
ae5a3597 AM |
634 | len = strlen (entry->pattern) + 2; |
635 | dot_pat = xmalloc (len); | |
636 | dot_pat[0] = '.'; | |
637 | memcpy (dot_pat + 1, entry->pattern, len - 1); | |
638 | dot_entry->pattern = dot_pat; | |
71755fdf | 639 | dot_entry->script = 1; |
fac1652d AM |
640 | return dot_entry; |
641 | } | |
642 | ||
643 | ||
9c1d81c1 AM |
644 | /* Avoid processing the fake stub_file in vercheck, stat_needed and |
645 | check_needed routines. */ | |
1f808cd5 | 646 | |
7d8a3a28 | 647 | static void (*real_func) (lang_input_statement_type *); |
1f808cd5 | 648 | |
7d8a3a28 | 649 | static void ppc_for_each_input_file_wrapper (lang_input_statement_type *l) |
9c1d81c1 AM |
650 | { |
651 | if (l != stub_file) | |
652 | (*real_func) (l); | |
1f808cd5 | 653 | } |
9c1d81c1 AM |
654 | |
655 | static void | |
7d8a3a28 | 656 | ppc_lang_for_each_input_file (void (*func) (lang_input_statement_type *)) |
9c1d81c1 AM |
657 | { |
658 | real_func = func; | |
659 | lang_for_each_input_file (&ppc_for_each_input_file_wrapper); | |
660 | } | |
661 | ||
662 | #define lang_for_each_input_file ppc_lang_for_each_input_file | |
663 | ||
1f808cd5 AM |
664 | EOF |
665 | ||
dc27aea4 | 666 | if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then |
92b93329 | 667 | fragment <<EOF |
dc27aea4 AM |
668 | /* Special handling for embedded SPU executables. */ |
669 | extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *); | |
670 | static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *); | |
671 | ||
672 | static bfd_boolean | |
673 | ppc64_recognized_file (lang_input_statement_type *entry) | |
674 | { | |
675 | if (embedded_spu_file (entry, "-m64")) | |
676 | return TRUE; | |
677 | ||
678 | return gld${EMULATION_NAME}_load_symbols (entry); | |
679 | } | |
680 | EOF | |
681 | LDEMUL_RECOGNIZED_FILE=ppc64_recognized_file | |
682 | fi | |
683 | ||
9c1d81c1 AM |
684 | # Define some shell vars to insert bits of code into the standard elf |
685 | # parse_args and list_options functions. | |
686 | # | |
58d180e8 | 687 | PARSE_AND_LIST_PROLOGUE=${PARSE_AND_LIST_PROLOGUE}' |
f378ab09 AM |
688 | enum ppc64_opt |
689 | { | |
690 | OPTION_STUBGROUP_SIZE = 321, | |
691 | OPTION_PLT_STATIC_CHAIN, | |
692 | OPTION_NO_PLT_STATIC_CHAIN, | |
693 | OPTION_PLT_THREAD_SAFE, | |
694 | OPTION_NO_PLT_THREAD_SAFE, | |
695 | OPTION_PLT_ALIGN, | |
696 | OPTION_NO_PLT_ALIGN, | |
697 | OPTION_PLT_LOCALENTRY, | |
698 | OPTION_NO_PLT_LOCALENTRY, | |
699 | OPTION_STUBSYMS, | |
700 | OPTION_NO_STUBSYMS, | |
701 | OPTION_SAVRES, | |
702 | OPTION_NO_SAVRES, | |
703 | OPTION_DOTSYMS, | |
704 | OPTION_NO_DOTSYMS, | |
705 | OPTION_NO_TLS_OPT, | |
706 | OPTION_TLS_GET_ADDR_OPT, | |
707 | OPTION_NO_TLS_GET_ADDR_OPT, | |
708 | OPTION_NO_OPD_OPT, | |
709 | OPTION_NO_TOC_OPT, | |
710 | OPTION_NO_MULTI_TOC, | |
711 | OPTION_NO_TOC_SORT, | |
712 | OPTION_NON_OVERLAPPING_OPD | |
713 | }; | |
9c1d81c1 AM |
714 | ' |
715 | ||
58d180e8 | 716 | PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}' |
9c1d81c1 | 717 | { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, |
9df0ef5f AM |
718 | { "plt-static-chain", no_argument, NULL, OPTION_PLT_STATIC_CHAIN }, |
719 | { "no-plt-static-chain", no_argument, NULL, OPTION_NO_PLT_STATIC_CHAIN }, | |
794e51c0 AM |
720 | { "plt-thread-safe", no_argument, NULL, OPTION_PLT_THREAD_SAFE }, |
721 | { "no-plt-thread-safe", no_argument, NULL, OPTION_NO_PLT_THREAD_SAFE }, | |
722 | { "plt-align", optional_argument, NULL, OPTION_PLT_ALIGN }, | |
723 | { "no-plt-align", no_argument, NULL, OPTION_NO_PLT_ALIGN }, | |
f378ab09 AM |
724 | { "plt-localentry", optional_argument, NULL, OPTION_PLT_LOCALENTRY }, |
725 | { "no-plt-localentry", no_argument, NULL, OPTION_NO_PLT_LOCALENTRY }, | |
0b9a4d73 | 726 | { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS }, |
b02c4cfa | 727 | { "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS }, |
fac1652d AM |
728 | { "dotsyms", no_argument, NULL, OPTION_DOTSYMS }, |
729 | { "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS }, | |
7d4c687d AM |
730 | { "save-restore-funcs", no_argument, NULL, OPTION_SAVRES }, |
731 | { "no-save-restore-funcs", no_argument, NULL, OPTION_NO_SAVRES }, | |
e5096e3f | 732 | { "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT }, |
7c9cf415 | 733 | { "tls-get-addr-optimize", no_argument, NULL, OPTION_TLS_GET_ADDR_OPT }, |
a7f2871e | 734 | { "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT }, |
c5614fa4 AM |
735 | { "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT }, |
736 | { "no-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT }, | |
4c52953f | 737 | { "no-multi-toc", no_argument, NULL, OPTION_NO_MULTI_TOC }, |
d43d0b53 | 738 | { "no-toc-sort", no_argument, NULL, OPTION_NO_TOC_SORT }, |
3f764659 | 739 | { "non-overlapping-opd", no_argument, NULL, OPTION_NON_OVERLAPPING_OPD }, |
9c1d81c1 AM |
740 | ' |
741 | ||
58d180e8 | 742 | PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}' |
9c1d81c1 | 743 | fprintf (file, _("\ |
442996ee AM |
744 | --stub-group-size=N Maximum size of a group of input sections that\n\ |
745 | can be handled by one stub section. A negative\n\ | |
746 | value locates all stubs before their branches\n\ | |
747 | (with a group size of -N), while a positive\n\ | |
748 | value allows two groups of input sections, one\n\ | |
749 | before, and one after each stub section.\n\ | |
750 | Values of +/-1 indicate the linker should\n\ | |
751 | choose suitable defaults.\n" | |
9c1d81c1 | 752 | )); |
fac1652d | 753 | fprintf (file, _("\ |
df5f2391 | 754 | --plt-static-chain PLT call stubs should load r11'${DEFAULT_PLT_STATIC_CHAIN- (default)}'\n" |
794e51c0 AM |
755 | )); |
756 | fprintf (file, _("\ | |
df5f2391 | 757 | --no-plt-static-chain PLT call stubs should not load r11'${DEFAULT_PLT_STATIC_CHAIN+ (default)}'\n" |
794e51c0 AM |
758 | )); |
759 | fprintf (file, _("\ | |
df5f2391 | 760 | --plt-thread-safe PLT call stubs with load-load barrier\n" |
794e51c0 AM |
761 | )); |
762 | fprintf (file, _("\ | |
df5f2391 | 763 | --no-plt-thread-safe PLT call stubs without barrier\n" |
794e51c0 AM |
764 | )); |
765 | fprintf (file, _("\ | |
df5f2391 | 766 | --plt-align [=<align>] Align PLT call stubs to fit cache lines\n" |
9df0ef5f AM |
767 | )); |
768 | fprintf (file, _("\ | |
df5f2391 | 769 | --no-plt-align Dont'\''t align individual PLT call stubs\n" |
9df0ef5f AM |
770 | )); |
771 | fprintf (file, _("\ | |
df5f2391 | 772 | --plt-localentry Optimize calls to ELFv2 localentry:0 functions\n" |
f378ab09 AM |
773 | )); |
774 | fprintf (file, _("\ | |
df5f2391 | 775 | --no-plt-localentry Don'\''t optimize ELFv2 calls\n" |
f378ab09 AM |
776 | )); |
777 | fprintf (file, _("\ | |
df5f2391 | 778 | --emit-stub-syms Label linker stubs with a symbol\n" |
0b9a4d73 AM |
779 | )); |
780 | fprintf (file, _("\ | |
df5f2391 | 781 | --no-emit-stub-syms Don'\''t label linker stubs with a symbol\n" |
b02c4cfa AM |
782 | )); |
783 | fprintf (file, _("\ | |
442996ee AM |
784 | --dotsyms For every version pattern \"foo\" in a version\n\ |
785 | script, add \".foo\" so that function code\n\ | |
786 | symbols are treated the same as function\n\ | |
787 | descriptor symbols. Defaults to on.\n" | |
fac1652d AM |
788 | )); |
789 | fprintf (file, _("\ | |
df5f2391 | 790 | --no-dotsyms Don'\''t do anything special in version scripts\n" |
fac1652d | 791 | )); |
e5096e3f | 792 | fprintf (file, _("\ |
7d4c687d AM |
793 | --save-restore-funcs Provide register save and restore routines used\n\ |
794 | by gcc -Os code. Defaults to on for normal\n\ | |
795 | final link, off for ld -r.\n" | |
796 | )); | |
797 | fprintf (file, _("\ | |
df5f2391 | 798 | --no-save-restore-funcs Don'\''t provide these routines\n" |
7d4c687d AM |
799 | )); |
800 | fprintf (file, _("\ | |
df5f2391 | 801 | --no-tls-optimize Don'\''t try to optimize TLS accesses\n" |
e5096e3f | 802 | )); |
3f764659 | 803 | fprintf (file, _("\ |
df5f2391 | 804 | --tls-get-addr-optimize Force use of special __tls_get_addr call\n" |
7c9cf415 AM |
805 | )); |
806 | fprintf (file, _("\ | |
df5f2391 | 807 | --no-tls-get-addr-optimize Don'\''t use a special __tls_get_addr call\n" |
a7f2871e AM |
808 | )); |
809 | fprintf (file, _("\ | |
df5f2391 | 810 | --no-opd-optimize Don'\''t optimize the OPD section\n" |
c5614fa4 AM |
811 | )); |
812 | fprintf (file, _("\ | |
df5f2391 | 813 | --no-toc-optimize Don'\''t optimize the TOC section\n" |
c5614fa4 AM |
814 | )); |
815 | fprintf (file, _("\ | |
df5f2391 | 816 | --no-multi-toc Disallow automatic multiple toc sections\n" |
4c52953f AM |
817 | )); |
818 | fprintf (file, _("\ | |
df5f2391 | 819 | --no-toc-sort Don'\''t sort TOC and GOT sections\n" |
d43d0b53 AM |
820 | )); |
821 | fprintf (file, _("\ | |
442996ee | 822 | --non-overlapping-opd Canonicalize .opd, so that there are no\n\ |
df5f2391 | 823 | overlapping .opd entries\n" |
3f764659 | 824 | )); |
9c1d81c1 AM |
825 | ' |
826 | ||
58d180e8 | 827 | PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}' |
9c1d81c1 AM |
828 | case OPTION_STUBGROUP_SIZE: |
829 | { | |
830 | const char *end; | |
6c19b93b AM |
831 | params.group_size = bfd_scan_vma (optarg, &end, 0); |
832 | if (*end) | |
df5f2391 | 833 | einfo (_("%F%P: invalid number `%s'\''\n"), optarg); |
9c1d81c1 AM |
834 | } |
835 | break; | |
fac1652d | 836 | |
9df0ef5f | 837 | case OPTION_PLT_STATIC_CHAIN: |
e7d1c40c | 838 | params.plt_static_chain = 1; |
9df0ef5f AM |
839 | break; |
840 | ||
841 | case OPTION_NO_PLT_STATIC_CHAIN: | |
e7d1c40c | 842 | params.plt_static_chain = 0; |
9df0ef5f AM |
843 | break; |
844 | ||
794e51c0 | 845 | case OPTION_PLT_THREAD_SAFE: |
e7d1c40c | 846 | params.plt_thread_safe = 1; |
794e51c0 AM |
847 | break; |
848 | ||
849 | case OPTION_NO_PLT_THREAD_SAFE: | |
e7d1c40c | 850 | params.plt_thread_safe = 0; |
794e51c0 AM |
851 | break; |
852 | ||
853 | case OPTION_PLT_ALIGN: | |
854 | if (optarg != NULL) | |
855 | { | |
856 | char *end; | |
691d2e9a AM |
857 | long val = strtol (optarg, &end, 0); |
858 | if (*end || (unsigned long) val + 8 > 16) | |
df5f2391 | 859 | einfo (_("%F%P: invalid --plt-align `%s'\''\n"), optarg); |
e05fa0ba | 860 | params.plt_stub_align = val; |
794e51c0 AM |
861 | } |
862 | else | |
e05fa0ba | 863 | params.plt_stub_align = 5; |
794e51c0 AM |
864 | break; |
865 | ||
866 | case OPTION_NO_PLT_ALIGN: | |
e05fa0ba | 867 | params.plt_stub_align = 0; |
794e51c0 AM |
868 | break; |
869 | ||
f378ab09 AM |
870 | case OPTION_PLT_LOCALENTRY: |
871 | params.plt_localentry0 = 1; | |
872 | break; | |
873 | ||
874 | case OPTION_NO_PLT_LOCALENTRY: | |
875 | params.plt_localentry0 = 0; | |
876 | break; | |
877 | ||
0b9a4d73 | 878 | case OPTION_STUBSYMS: |
e7d1c40c | 879 | params.emit_stub_syms = 1; |
0b9a4d73 AM |
880 | break; |
881 | ||
b02c4cfa | 882 | case OPTION_NO_STUBSYMS: |
e7d1c40c | 883 | params.emit_stub_syms = 0; |
b02c4cfa AM |
884 | break; |
885 | ||
fac1652d | 886 | case OPTION_DOTSYMS: |
e5096e3f | 887 | dotsyms = 1; |
fac1652d AM |
888 | break; |
889 | ||
890 | case OPTION_NO_DOTSYMS: | |
e5096e3f AM |
891 | dotsyms = 0; |
892 | break; | |
893 | ||
7d4c687d AM |
894 | case OPTION_SAVRES: |
895 | params.save_restore_funcs = 1; | |
896 | break; | |
897 | ||
898 | case OPTION_NO_SAVRES: | |
899 | params.save_restore_funcs = 0; | |
900 | break; | |
901 | ||
e5096e3f | 902 | case OPTION_NO_TLS_OPT: |
c5614fa4 AM |
903 | no_tls_opt = 1; |
904 | break; | |
905 | ||
7c9cf415 AM |
906 | case OPTION_TLS_GET_ADDR_OPT: |
907 | params.tls_get_addr_opt = 1; | |
908 | break; | |
909 | ||
a7f2871e | 910 | case OPTION_NO_TLS_GET_ADDR_OPT: |
7c9cf415 | 911 | params.tls_get_addr_opt = 0; |
a7f2871e AM |
912 | break; |
913 | ||
c5614fa4 AM |
914 | case OPTION_NO_OPD_OPT: |
915 | no_opd_opt = 1; | |
916 | break; | |
917 | ||
918 | case OPTION_NO_TOC_OPT: | |
919 | no_toc_opt = 1; | |
fac1652d | 920 | break; |
3f764659 | 921 | |
4c52953f | 922 | case OPTION_NO_MULTI_TOC: |
e7d1c40c | 923 | params.no_multi_toc = 1; |
4c52953f AM |
924 | break; |
925 | ||
d43d0b53 AM |
926 | case OPTION_NO_TOC_SORT: |
927 | no_toc_sort = 1; | |
928 | break; | |
929 | ||
3f764659 | 930 | case OPTION_NON_OVERLAPPING_OPD: |
e7d1c40c | 931 | params.non_overlapping_opd = 1; |
3f764659 | 932 | break; |
f05eb3b7 AM |
933 | |
934 | case OPTION_TRADITIONAL_FORMAT: | |
935 | no_tls_opt = 1; | |
7c9cf415 | 936 | params.tls_get_addr_opt = 0; |
f05eb3b7 AM |
937 | no_opd_opt = 1; |
938 | no_toc_opt = 1; | |
e7d1c40c | 939 | params.no_multi_toc = 1; |
f05eb3b7 | 940 | no_toc_sort = 1; |
e7d1c40c | 941 | params.plt_static_chain = 1; |
f05eb3b7 | 942 | return FALSE; |
9c1d81c1 AM |
943 | ' |
944 | ||
1f808cd5 AM |
945 | # Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation |
946 | # | |
dbd1e97e AM |
947 | LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern |
948 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements | |
949 | LDEMUL_AFTER_OPEN=ppc_after_open | |
836c6af1 | 950 | LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation |
1f808cd5 | 951 | LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
8ded5a0f | 952 | LDEMUL_FINISH=gld${EMULATION_NAME}_finish |