Commit | Line | Data |
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1f808cd5 | 1 | # This shell script emits a C file. -*- C -*- |
927be08e | 2 | # Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
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 AM |
31 | #include "elf64-ppc.h" |
32 | ||
9c1d81c1 AM |
33 | /* Fake input file for stubs. */ |
34 | static lang_input_statement_type *stub_file; | |
68f8ff14 | 35 | static int stub_added = 0; |
9c1d81c1 | 36 | |
deb04cdb AM |
37 | /* Whether we need to call ppc_layout_sections_again. */ |
38 | static int need_laying_out = 0; | |
39 | ||
9c1d81c1 AM |
40 | /* Maximum size of a group of input sections that can be handled by |
41 | one stub section. A value of +/-1 indicates the bfd back-end | |
42 | should use a suitable default size. */ | |
43 | static bfd_signed_vma group_size = 1; | |
44 | ||
fac1652d AM |
45 | /* Whether to add ".foo" entries for each "foo" in a version script. */ |
46 | static int dotsyms = 1; | |
47 | ||
e5096e3f | 48 | /* Whether to run tls optimization. */ |
c5614fa4 | 49 | static int no_tls_opt = 0; |
a7f2871e | 50 | static int no_tls_get_addr_opt = 0; |
c5614fa4 AM |
51 | |
52 | /* Whether to run opd optimization. */ | |
53 | static int no_opd_opt = 0; | |
54 | ||
55 | /* Whether to run toc optimization. */ | |
56 | static int no_toc_opt = 0; | |
e5096e3f | 57 | |
4c52953f AM |
58 | /* Whether to allow multiple toc sections. */ |
59 | static int no_multi_toc = 0; | |
60 | ||
d43d0b53 AM |
61 | /* Whether to sort input toc and got sections. */ |
62 | static int no_toc_sort = 0; | |
63 | ||
0b9a4d73 | 64 | /* Whether to emit symbols for stubs. */ |
b02c4cfa | 65 | static int emit_stub_syms = -1; |
0b9a4d73 AM |
66 | |
67 | static asection *toc_section = 0; | |
68 | ||
3f764659 JJ |
69 | /* Whether to canonicalize .opd so that there are no overlapping |
70 | .opd entries. */ | |
71 | static int non_overlapping_opd = 0; | |
9c1d81c1 AM |
72 | |
73 | /* This is called before the input files are opened. We create a new | |
74 | fake input file to hold the stub sections. */ | |
75 | ||
76 | static void | |
7d8a3a28 | 77 | ppc_create_output_section_statements (void) |
9c1d81c1 | 78 | { |
5503fea1 | 79 | if (!(bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour |
4dfe6ac6 | 80 | && elf_object_id (link_info.output_bfd) == PPC64_ELF_DATA)) |
a015f5ec AM |
81 | return; |
82 | ||
b9cf773d AM |
83 | link_info.wrap_char = '.'; |
84 | ||
9c1d81c1 AM |
85 | stub_file = lang_add_input_file ("linker stubs", |
86 | lang_input_file_is_fake_enum, | |
87 | NULL); | |
f13a99db | 88 | stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd); |
9c1d81c1 AM |
89 | if (stub_file->the_bfd == NULL |
90 | || !bfd_set_arch_mach (stub_file->the_bfd, | |
f13a99db AM |
91 | bfd_get_arch (link_info.output_bfd), |
92 | bfd_get_mach (link_info.output_bfd))) | |
9c1d81c1 | 93 | { |
92b7a70f | 94 | einfo ("%F%P: can not create BFD %E\n"); |
9c1d81c1 AM |
95 | return; |
96 | } | |
97 | ||
d457dcf6 | 98 | stub_file->the_bfd->flags |= BFD_LINKER_CREATED; |
9c1d81c1 | 99 | ldlang_add_file (stub_file); |
68f8ff14 | 100 | ppc64_elf_init_stub_bfd (stub_file->the_bfd, &link_info); |
9c1d81c1 AM |
101 | } |
102 | ||
d43d0b53 AM |
103 | /* Move the input section statement at *U which happens to be on LIST |
104 | to be just before *TO. */ | |
105 | ||
106 | static void | |
107 | move_input_section (lang_statement_list_type *list, | |
108 | lang_statement_union_type **u, | |
109 | lang_statement_union_type **to) | |
110 | { | |
111 | lang_statement_union_type *s = *u; | |
112 | asection *i = s->input_section.section; | |
113 | asection *p, *n; | |
114 | ||
115 | /* Snip the input section from the statement list. If it was the | |
116 | last statement, fix the list tail pointer. */ | |
117 | *u = s->header.next; | |
118 | if (*u == NULL) | |
119 | list->tail = u; | |
120 | /* Add it back in the new position. */ | |
121 | s->header.next = *to; | |
122 | *to = s; | |
123 | if (list->tail == to) | |
124 | list->tail = &s->header.next; | |
125 | ||
126 | /* Trim I off the bfd map_head/map_tail doubly linked lists. */ | |
127 | n = i->map_head.s; | |
128 | p = i->map_tail.s; | |
129 | (p != NULL ? p : i->output_section)->map_head.s = n; | |
130 | (n != NULL ? n : i->output_section)->map_tail.s = p; | |
131 | ||
132 | /* Add I back on in its new position. */ | |
133 | if (s->header.next->header.type == lang_input_section_enum) | |
134 | { | |
135 | n = s->header.next->input_section.section; | |
136 | p = n->map_tail.s; | |
137 | } | |
138 | else | |
139 | { | |
140 | /* If the next statement is not an input section statement then | |
141 | TO must point at the previous input section statement | |
142 | header.next field. */ | |
143 | lang_input_section_type *prev = (lang_input_section_type *) | |
144 | ((char *) to - offsetof (lang_statement_union_type, header.next)); | |
145 | ||
146 | ASSERT (prev->header.type == lang_input_section_enum); | |
147 | p = prev->section; | |
148 | n = p->map_head.s; | |
149 | } | |
150 | i->map_head.s = n; | |
151 | i->map_tail.s = p; | |
152 | (p != NULL ? p : i->output_section)->map_head.s = i; | |
153 | (n != NULL ? n : i->output_section)->map_tail.s = i; | |
154 | } | |
155 | ||
156 | /* Sort input section statements in the linker script tree rooted at | |
157 | LIST so that those whose owning bfd happens to have a section | |
158 | called .init or .fini are placed first. Place any TOC sections | |
159 | referenced by small TOC relocs next, with TOC sections referenced | |
160 | only by bigtoc relocs last. */ | |
161 | ||
162 | static void | |
163 | sort_toc_sections (lang_statement_list_type *list, | |
164 | lang_statement_union_type **ini, | |
165 | lang_statement_union_type **small) | |
166 | { | |
167 | lang_statement_union_type *s, **u; | |
168 | asection *i; | |
169 | ||
170 | u = &list->head; | |
171 | while ((s = *u) != NULL) | |
172 | { | |
173 | switch (s->header.type) | |
174 | { | |
175 | case lang_wild_statement_enum: | |
176 | sort_toc_sections (&s->wild_statement.children, ini, small); | |
177 | break; | |
178 | ||
179 | case lang_group_statement_enum: | |
180 | sort_toc_sections (&s->group_statement.children, ini, small); | |
181 | break; | |
182 | ||
183 | case lang_input_section_enum: | |
184 | i = s->input_section.section; | |
185 | /* Leave the stub_file .got where it is. We put the .got | |
186 | header there. */ | |
187 | if (i->owner == stub_file->the_bfd) | |
188 | break; | |
189 | if (bfd_get_section_by_name (i->owner, ".init") != NULL | |
190 | || bfd_get_section_by_name (i->owner, ".fini") != NULL) | |
191 | { | |
192 | if (ini != NULL && *ini != s) | |
193 | { | |
194 | move_input_section (list, u, ini); | |
195 | if (small == ini) | |
196 | small = &s->header.next; | |
197 | ini = &s->header.next; | |
198 | continue; | |
199 | } | |
200 | if (small == ini) | |
201 | small = &s->header.next; | |
202 | ini = &s->header.next; | |
203 | break; | |
204 | } | |
205 | else if (ini == NULL) | |
206 | ini = u; | |
207 | ||
208 | if (ppc64_elf_has_small_toc_reloc (i)) | |
209 | { | |
210 | if (small != NULL && *small != s) | |
211 | { | |
212 | move_input_section (list, u, small); | |
213 | small = &s->header.next; | |
214 | continue; | |
215 | } | |
216 | small = &s->header.next; | |
217 | } | |
218 | else if (small == NULL) | |
219 | small = u; | |
220 | break; | |
221 | ||
222 | default: | |
223 | break; | |
224 | } | |
225 | u = &s->header.next; | |
226 | } | |
227 | } | |
228 | ||
ba761f19 AM |
229 | static void |
230 | prelim_size_sections (void) | |
231 | { | |
232 | if (expld.phase != lang_mark_phase_enum) | |
233 | { | |
234 | expld.phase = lang_mark_phase_enum; | |
235 | expld.dataseg.phase = exp_dataseg_none; | |
236 | one_lang_size_sections_pass (NULL, FALSE); | |
237 | /* We must not cache anything from the preliminary sizing. */ | |
238 | lang_reset_memory_regions (); | |
239 | } | |
240 | } | |
241 | ||
836c6af1 | 242 | static void |
7d8a3a28 | 243 | ppc_before_allocation (void) |
836c6af1 | 244 | { |
a015f5ec | 245 | if (stub_file != NULL) |
e0468e59 | 246 | { |
74f0fb50 | 247 | if (!no_opd_opt |
33c0ec9d | 248 | && !ppc64_elf_edit_opd (&link_info, non_overlapping_opd)) |
92b7a70f | 249 | einfo ("%X%P: can not edit %s %E\n", "opd"); |
e5096e3f | 250 | |
33c0ec9d | 251 | if (ppc64_elf_tls_setup (&link_info, no_tls_get_addr_opt, &no_multi_toc) |
f13a99db | 252 | && !no_tls_opt) |
a015f5ec AM |
253 | { |
254 | /* Size the sections. This is premature, but we want to know the | |
255 | TLS segment layout so that certain optimizations can be done. */ | |
ba761f19 | 256 | prelim_size_sections (); |
a015f5ec | 257 | |
33c0ec9d | 258 | if (!ppc64_elf_tls_optimize (&link_info)) |
92b7a70f | 259 | einfo ("%X%P: TLS problem %E\n"); |
a015f5ec | 260 | } |
c5614fa4 AM |
261 | |
262 | if (!no_toc_opt | |
ba761f19 AM |
263 | && !link_info.relocatable) |
264 | { | |
265 | prelim_size_sections (); | |
266 | ||
267 | if (!ppc64_elf_edit_toc (&link_info)) | |
268 | einfo ("%X%P: can not edit %s %E\n", "toc"); | |
269 | } | |
d43d0b53 AM |
270 | |
271 | if (!no_toc_sort) | |
272 | { | |
273 | lang_output_section_statement_type *toc_os; | |
274 | ||
275 | toc_os = lang_output_section_find (".got"); | |
276 | if (toc_os != NULL) | |
277 | sort_toc_sections (&toc_os->children, NULL, NULL); | |
278 | } | |
e0468e59 AM |
279 | } |
280 | ||
836c6af1 AM |
281 | gld${EMULATION_NAME}_before_allocation (); |
282 | } | |
283 | ||
9c1d81c1 AM |
284 | struct hook_stub_info |
285 | { | |
286 | lang_statement_list_type add; | |
287 | asection *input_section; | |
288 | }; | |
289 | ||
290 | /* Traverse the linker tree to find the spot where the stub goes. */ | |
291 | ||
b34976b6 | 292 | static bfd_boolean |
7d8a3a28 | 293 | hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) |
9c1d81c1 AM |
294 | { |
295 | lang_statement_union_type *l; | |
b34976b6 | 296 | bfd_boolean ret; |
9c1d81c1 AM |
297 | |
298 | for (; (l = *lp) != NULL; lp = &l->header.next) | |
299 | { | |
300 | switch (l->header.type) | |
301 | { | |
302 | case lang_constructors_statement_enum: | |
303 | ret = hook_in_stub (info, &constructor_list.head); | |
304 | if (ret) | |
305 | return ret; | |
306 | break; | |
307 | ||
308 | case lang_output_section_statement_enum: | |
309 | ret = hook_in_stub (info, | |
310 | &l->output_section_statement.children.head); | |
311 | if (ret) | |
312 | return ret; | |
313 | break; | |
314 | ||
315 | case lang_wild_statement_enum: | |
316 | ret = hook_in_stub (info, &l->wild_statement.children.head); | |
317 | if (ret) | |
318 | return ret; | |
319 | break; | |
320 | ||
321 | case lang_group_statement_enum: | |
322 | ret = hook_in_stub (info, &l->group_statement.children.head); | |
323 | if (ret) | |
324 | return ret; | |
325 | break; | |
326 | ||
327 | case lang_input_section_enum: | |
328 | if (l->input_section.section == info->input_section) | |
329 | { | |
330 | /* We've found our section. Insert the stub immediately | |
331 | before its associated input section. */ | |
332 | *lp = info->add.head; | |
333 | *(info->add.tail) = l; | |
b34976b6 | 334 | return TRUE; |
9c1d81c1 AM |
335 | } |
336 | break; | |
337 | ||
338 | case lang_data_statement_enum: | |
339 | case lang_reloc_statement_enum: | |
340 | case lang_object_symbols_statement_enum: | |
341 | case lang_output_statement_enum: | |
342 | case lang_target_statement_enum: | |
343 | case lang_input_statement_enum: | |
344 | case lang_assignment_statement_enum: | |
345 | case lang_padding_statement_enum: | |
346 | case lang_address_statement_enum: | |
347 | case lang_fill_statement_enum: | |
348 | break; | |
349 | ||
350 | default: | |
351 | FAIL (); | |
352 | break; | |
353 | } | |
354 | } | |
b34976b6 | 355 | return FALSE; |
9c1d81c1 AM |
356 | } |
357 | ||
358 | ||
359 | /* Call-back for ppc64_elf_size_stubs. */ | |
360 | ||
361 | /* Create a new stub section, and arrange for it to be linked | |
362 | immediately before INPUT_SECTION. */ | |
363 | ||
364 | static asection * | |
7d8a3a28 | 365 | ppc_add_stub_section (const char *stub_sec_name, asection *input_section) |
9c1d81c1 AM |
366 | { |
367 | asection *stub_sec; | |
368 | flagword flags; | |
369 | asection *output_section; | |
370 | const char *secname; | |
371 | lang_output_section_statement_type *os; | |
372 | struct hook_stub_info info; | |
373 | ||
9c1d81c1 | 374 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
e4e0193e | 375 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_KEEP); |
9795b468 AM |
376 | stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd, |
377 | stub_sec_name, flags); | |
378 | if (stub_sec == NULL) | |
9c1d81c1 AM |
379 | goto err_ret; |
380 | ||
381 | output_section = input_section->output_section; | |
382 | secname = bfd_get_section_name (output_section->owner, output_section); | |
383 | os = lang_output_section_find (secname); | |
384 | ||
385 | info.input_section = input_section; | |
386 | lang_list_init (&info.add); | |
7b986e99 | 387 | lang_add_section (&info.add, stub_sec, os); |
9c1d81c1 AM |
388 | |
389 | if (info.add.head == NULL) | |
390 | goto err_ret; | |
391 | ||
68f8ff14 | 392 | stub_added = 1; |
9c1d81c1 AM |
393 | if (hook_in_stub (&info, &os->children.head)) |
394 | return stub_sec; | |
395 | ||
396 | err_ret: | |
397 | einfo ("%X%P: can not make stub section: %E\n"); | |
398 | return NULL; | |
399 | } | |
400 | ||
401 | ||
402 | /* Another call-back for ppc64_elf_size_stubs. */ | |
403 | ||
404 | static void | |
7d8a3a28 | 405 | ppc_layout_sections_again (void) |
9c1d81c1 AM |
406 | { |
407 | /* If we have changed sizes of the stub sections, then we need | |
408 | to recalculate all the section offsets. This may mean we need to | |
409 | add even more stubs. */ | |
8ded5a0f | 410 | gld${EMULATION_NAME}_map_segments (TRUE); |
1f808cd5 | 411 | |
1049f94e | 412 | if (!link_info.relocatable) |
f13a99db AM |
413 | _bfd_set_gp_value (link_info.output_bfd, |
414 | ppc64_elf_toc (link_info.output_bfd)); | |
eaeb0a9d AM |
415 | |
416 | need_laying_out = -1; | |
1f808cd5 AM |
417 | } |
418 | ||
9c1d81c1 | 419 | |
0b9a4d73 | 420 | static void |
7d8a3a28 | 421 | build_toc_list (lang_statement_union_type *statement) |
0b9a4d73 | 422 | { |
7b986e99 AM |
423 | if (statement->header.type == lang_input_section_enum) |
424 | { | |
425 | asection *i = statement->input_section.section; | |
426 | ||
427 | if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag | |
428 | && (i->flags & SEC_EXCLUDE) == 0 | |
429 | && i->output_section == toc_section) | |
927be08e AM |
430 | { |
431 | if (!ppc64_elf_next_toc_section (&link_info, i)) | |
432 | einfo ("%X%P: linker script separates .got and .toc\n"); | |
433 | } | |
7b986e99 | 434 | } |
0b9a4d73 AM |
435 | } |
436 | ||
437 | ||
9c1d81c1 | 438 | static void |
7d8a3a28 | 439 | build_section_lists (lang_statement_union_type *statement) |
9c1d81c1 | 440 | { |
7b986e99 | 441 | if (statement->header.type == lang_input_section_enum) |
9c1d81c1 | 442 | { |
7b986e99 AM |
443 | asection *i = statement->input_section.section; |
444 | ||
445 | if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag | |
446 | && (i->flags & SEC_EXCLUDE) == 0 | |
447 | && i->output_section != NULL | |
f13a99db | 448 | && i->output_section->owner == link_info.output_bfd) |
7b986e99 AM |
449 | { |
450 | if (!ppc64_elf_next_input_section (&link_info, i)) | |
451 | einfo ("%X%P: can not size stub section: %E\n"); | |
452 | } | |
9c1d81c1 AM |
453 | } |
454 | } | |
455 | ||
fac1652d | 456 | |
eaeb0a9d AM |
457 | /* Call the back-end function to set TOC base after we have placed all |
458 | the sections. */ | |
1f808cd5 | 459 | static void |
eaeb0a9d | 460 | gld${EMULATION_NAME}_after_allocation (void) |
1f808cd5 | 461 | { |
eaeb0a9d AM |
462 | /* bfd_elf_discard_info just plays with data and debugging sections, |
463 | ie. doesn't affect code size, so we can delay resizing the | |
deb04cdb AM |
464 | sections. It's likely we'll resize everything in the process of |
465 | adding stubs. */ | |
f13a99db | 466 | if (bfd_elf_discard_info (link_info.output_bfd, &link_info)) |
deb04cdb AM |
467 | need_laying_out = 1; |
468 | ||
836c6af1 AM |
469 | /* If generating a relocatable output file, then we don't have any |
470 | stubs. */ | |
1049f94e | 471 | if (stub_file != NULL && !link_info.relocatable) |
1f808cd5 | 472 | { |
927be08e AM |
473 | int ret = ppc64_elf_setup_section_lists (&link_info, |
474 | &ppc_add_stub_section, | |
475 | &ppc_layout_sections_again); | |
92b7a70f AM |
476 | if (ret < 0) |
477 | einfo ("%X%P: can not size stub section: %E\n"); | |
478 | else if (ret > 0) | |
9c1d81c1 | 479 | { |
927be08e AM |
480 | ppc64_elf_start_multitoc_partition (&link_info); |
481 | ||
482 | if (!no_multi_toc) | |
483 | { | |
484 | toc_section = bfd_get_section_by_name (link_info.output_bfd, | |
485 | ".got"); | |
486 | if (toc_section != NULL) | |
487 | lang_for_each_statement (build_toc_list); | |
488 | } | |
489 | ||
490 | if (ppc64_elf_layout_multitoc (&link_info) | |
491 | && !no_multi_toc | |
492 | && toc_section != NULL) | |
0b9a4d73 AM |
493 | lang_for_each_statement (build_toc_list); |
494 | ||
927be08e | 495 | ppc64_elf_finish_multitoc_partition (&link_info); |
0b9a4d73 | 496 | |
836c6af1 | 497 | lang_for_each_statement (build_section_lists); |
9c1d81c1 | 498 | |
70cc837d AM |
499 | if (!ppc64_elf_check_init_fini (&link_info)) |
500 | einfo ("%P: .init/.fini fragments use differing TOC pointers\n"); | |
501 | ||
836c6af1 | 502 | /* Call into the BFD backend to do the real work. */ |
927be08e | 503 | if (!ppc64_elf_size_stubs (&link_info, group_size)) |
92b7a70f | 504 | einfo ("%X%P: can not size stub section: %E\n"); |
1f808cd5 | 505 | } |
9c1d81c1 | 506 | } |
1f808cd5 | 507 | |
8ded5a0f | 508 | if (need_laying_out != -1) |
eaeb0a9d AM |
509 | { |
510 | gld${EMULATION_NAME}_map_segments (need_laying_out); | |
511 | ||
512 | if (!link_info.relocatable) | |
513 | _bfd_set_gp_value (link_info.output_bfd, | |
514 | ppc64_elf_toc (link_info.output_bfd)); | |
515 | } | |
516 | } | |
517 | ||
518 | ||
519 | /* Final emulation specific call. */ | |
520 | ||
521 | static void | |
522 | gld${EMULATION_NAME}_finish (void) | |
523 | { | |
524 | /* e_entry on PowerPC64 points to the function descriptor for | |
525 | _start. If _start is missing, default to the first function | |
526 | descriptor in the .opd section. */ | |
527 | entry_section = ".opd"; | |
deb04cdb | 528 | |
40e45c8b AM |
529 | if (link_info.relocatable) |
530 | { | |
f13a99db | 531 | asection *toc = bfd_get_section_by_name (link_info.output_bfd, ".toc"); |
40e45c8b | 532 | if (toc != NULL |
f13a99db | 533 | && bfd_section_size (link_info.output_bfd, toc) > 0x10000) |
40e45c8b AM |
534 | einfo ("%X%P: TOC section size exceeds 64k\n"); |
535 | } | |
536 | ||
68f8ff14 | 537 | if (stub_added) |
9c1d81c1 | 538 | { |
bda6c678 AM |
539 | char *msg = NULL; |
540 | char *line, *endline; | |
541 | ||
b02c4cfa AM |
542 | if (emit_stub_syms < 0) |
543 | emit_stub_syms = 1; | |
bda6c678 AM |
544 | if (!ppc64_elf_build_stubs (emit_stub_syms, &link_info, |
545 | config.stats ? &msg : NULL)) | |
9c1d81c1 | 546 | einfo ("%X%P: can not build stubs: %E\n"); |
bda6c678 AM |
547 | |
548 | for (line = msg; line != NULL; line = endline) | |
549 | { | |
550 | endline = strchr (line, '\n'); | |
551 | if (endline != NULL) | |
552 | *endline++ = '\0'; | |
553 | fprintf (stderr, "%s: %s\n", program_name, line); | |
554 | } | |
555 | if (msg != NULL) | |
556 | free (msg); | |
9c1d81c1 | 557 | } |
99877b66 AM |
558 | |
559 | ppc64_elf_restore_symbols (&link_info); | |
1e035701 | 560 | finish_default (); |
9c1d81c1 | 561 | } |
1f808cd5 | 562 | |
76dc39fe | 563 | |
fac1652d AM |
564 | /* Add a pattern matching ".foo" for every "foo" in a version script. |
565 | ||
566 | The reason for doing this is that many shared library version | |
567 | scripts export a selected set of functions or data symbols, forcing | |
568 | others local. eg. | |
569 | ||
570 | . VERS_1 { | |
571 | . global: | |
572 | . this; that; some; thing; | |
573 | . local: | |
574 | . *; | |
575 | . }; | |
576 | ||
577 | To make the above work for PowerPC64, we need to export ".this", | |
578 | ".that" and so on, otherwise only the function descriptor syms are | |
579 | exported. Lack of an exported function code sym may cause a | |
580 | definition to be pulled in from a static library. */ | |
581 | ||
7d8a3a28 AM |
582 | static struct bfd_elf_version_expr * |
583 | gld${EMULATION_NAME}_new_vers_pattern (struct bfd_elf_version_expr *entry) | |
fac1652d AM |
584 | { |
585 | struct bfd_elf_version_expr *dot_entry; | |
fac1652d AM |
586 | unsigned int len; |
587 | char *dot_pat; | |
588 | ||
b7b7fe3f | 589 | if (!dotsyms |
ae5a3597 AM |
590 | || entry->pattern[0] == '.' |
591 | || (!entry->literal && entry->pattern[0] == '*')) | |
fac1652d AM |
592 | return entry; |
593 | ||
7d8a3a28 | 594 | dot_entry = xmalloc (sizeof *dot_entry); |
108ba305 | 595 | *dot_entry = *entry; |
fac1652d | 596 | dot_entry->next = entry; |
ae5a3597 AM |
597 | len = strlen (entry->pattern) + 2; |
598 | dot_pat = xmalloc (len); | |
599 | dot_pat[0] = '.'; | |
600 | memcpy (dot_pat + 1, entry->pattern, len - 1); | |
601 | dot_entry->pattern = dot_pat; | |
fac1652d AM |
602 | return dot_entry; |
603 | } | |
604 | ||
605 | ||
9c1d81c1 AM |
606 | /* Avoid processing the fake stub_file in vercheck, stat_needed and |
607 | check_needed routines. */ | |
1f808cd5 | 608 | |
7d8a3a28 | 609 | static void (*real_func) (lang_input_statement_type *); |
1f808cd5 | 610 | |
7d8a3a28 | 611 | static void ppc_for_each_input_file_wrapper (lang_input_statement_type *l) |
9c1d81c1 AM |
612 | { |
613 | if (l != stub_file) | |
614 | (*real_func) (l); | |
1f808cd5 | 615 | } |
9c1d81c1 AM |
616 | |
617 | static void | |
7d8a3a28 | 618 | ppc_lang_for_each_input_file (void (*func) (lang_input_statement_type *)) |
9c1d81c1 AM |
619 | { |
620 | real_func = func; | |
621 | lang_for_each_input_file (&ppc_for_each_input_file_wrapper); | |
622 | } | |
623 | ||
624 | #define lang_for_each_input_file ppc_lang_for_each_input_file | |
625 | ||
1f808cd5 AM |
626 | EOF |
627 | ||
dc27aea4 | 628 | if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then |
92b93329 | 629 | fragment <<EOF |
dc27aea4 AM |
630 | /* Special handling for embedded SPU executables. */ |
631 | extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *); | |
632 | static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *); | |
633 | ||
634 | static bfd_boolean | |
635 | ppc64_recognized_file (lang_input_statement_type *entry) | |
636 | { | |
637 | if (embedded_spu_file (entry, "-m64")) | |
638 | return TRUE; | |
639 | ||
640 | return gld${EMULATION_NAME}_load_symbols (entry); | |
641 | } | |
642 | EOF | |
643 | LDEMUL_RECOGNIZED_FILE=ppc64_recognized_file | |
644 | fi | |
645 | ||
9c1d81c1 AM |
646 | # Define some shell vars to insert bits of code into the standard elf |
647 | # parse_args and list_options functions. | |
648 | # | |
649 | PARSE_AND_LIST_PROLOGUE=' | |
650 | #define OPTION_STUBGROUP_SIZE 301 | |
0b9a4d73 | 651 | #define OPTION_STUBSYMS (OPTION_STUBGROUP_SIZE + 1) |
b02c4cfa AM |
652 | #define OPTION_NO_STUBSYMS (OPTION_STUBSYMS + 1) |
653 | #define OPTION_DOTSYMS (OPTION_NO_STUBSYMS + 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 | ||
9c1d81c1 AM |
664 | PARSE_AND_LIST_LONGOPTS=' |
665 | { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, | |
0b9a4d73 | 666 | { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS }, |
b02c4cfa | 667 | { "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS }, |
fac1652d AM |
668 | { "dotsyms", no_argument, NULL, OPTION_DOTSYMS }, |
669 | { "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS }, | |
e5096e3f | 670 | { "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT }, |
a7f2871e | 671 | { "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT }, |
c5614fa4 AM |
672 | { "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT }, |
673 | { "no-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT }, | |
4c52953f | 674 | { "no-multi-toc", no_argument, NULL, OPTION_NO_MULTI_TOC }, |
d43d0b53 | 675 | { "no-toc-sort", no_argument, NULL, OPTION_NO_TOC_SORT }, |
3f764659 | 676 | { "non-overlapping-opd", no_argument, NULL, OPTION_NON_OVERLAPPING_OPD }, |
9c1d81c1 AM |
677 | ' |
678 | ||
679 | PARSE_AND_LIST_OPTIONS=' | |
680 | fprintf (file, _("\ | |
442996ee AM |
681 | --stub-group-size=N Maximum size of a group of input sections that\n\ |
682 | can be handled by one stub section. A negative\n\ | |
683 | value locates all stubs before their branches\n\ | |
684 | (with a group size of -N), while a positive\n\ | |
685 | value allows two groups of input sections, one\n\ | |
686 | before, and one after each stub section.\n\ | |
687 | Values of +/-1 indicate the linker should\n\ | |
688 | choose suitable defaults.\n" | |
9c1d81c1 | 689 | )); |
fac1652d | 690 | fprintf (file, _("\ |
442996ee | 691 | --emit-stub-syms Label linker stubs with a symbol.\n" |
0b9a4d73 AM |
692 | )); |
693 | fprintf (file, _("\ | |
b02c4cfa AM |
694 | --no-emit-stub-syms Don'\''t label linker stubs with a symbol.\n" |
695 | )); | |
696 | fprintf (file, _("\ | |
442996ee AM |
697 | --dotsyms For every version pattern \"foo\" in a version\n\ |
698 | script, add \".foo\" so that function code\n\ | |
699 | symbols are treated the same as function\n\ | |
700 | descriptor symbols. Defaults to on.\n" | |
fac1652d AM |
701 | )); |
702 | fprintf (file, _("\ | |
442996ee | 703 | --no-dotsyms Don'\''t do anything special in version scripts.\n" |
fac1652d | 704 | )); |
e5096e3f | 705 | fprintf (file, _("\ |
442996ee | 706 | --no-tls-optimize Don'\''t try to optimize TLS accesses.\n" |
e5096e3f | 707 | )); |
3f764659 | 708 | fprintf (file, _("\ |
a7f2871e AM |
709 | --no-tls-get-addr-optimize Don'\''t use a special __tls_get_addr call.\n" |
710 | )); | |
711 | fprintf (file, _("\ | |
442996ee | 712 | --no-opd-optimize Don'\''t optimize the OPD section.\n" |
c5614fa4 AM |
713 | )); |
714 | fprintf (file, _("\ | |
442996ee | 715 | --no-toc-optimize Don'\''t optimize the TOC section.\n" |
c5614fa4 AM |
716 | )); |
717 | fprintf (file, _("\ | |
442996ee | 718 | --no-multi-toc Disallow automatic multiple toc sections.\n" |
4c52953f AM |
719 | )); |
720 | fprintf (file, _("\ | |
d43d0b53 AM |
721 | --no-toc-sort Don'\''t sort TOC and GOT sections.\n" |
722 | )); | |
723 | fprintf (file, _("\ | |
442996ee AM |
724 | --non-overlapping-opd Canonicalize .opd, so that there are no\n\ |
725 | overlapping .opd entries.\n" | |
3f764659 | 726 | )); |
9c1d81c1 AM |
727 | ' |
728 | ||
729 | PARSE_AND_LIST_ARGS_CASES=' | |
730 | case OPTION_STUBGROUP_SIZE: | |
731 | { | |
732 | const char *end; | |
733 | group_size = bfd_scan_vma (optarg, &end, 0); | |
734 | if (*end) | |
735 | einfo (_("%P%F: invalid number `%s'\''\n"), optarg); | |
736 | } | |
737 | break; | |
fac1652d | 738 | |
0b9a4d73 AM |
739 | case OPTION_STUBSYMS: |
740 | emit_stub_syms = 1; | |
741 | break; | |
742 | ||
b02c4cfa AM |
743 | case OPTION_NO_STUBSYMS: |
744 | emit_stub_syms = 0; | |
745 | break; | |
746 | ||
fac1652d | 747 | case OPTION_DOTSYMS: |
e5096e3f | 748 | dotsyms = 1; |
fac1652d AM |
749 | break; |
750 | ||
751 | case OPTION_NO_DOTSYMS: | |
e5096e3f AM |
752 | dotsyms = 0; |
753 | break; | |
754 | ||
755 | case OPTION_NO_TLS_OPT: | |
c5614fa4 AM |
756 | no_tls_opt = 1; |
757 | break; | |
758 | ||
a7f2871e AM |
759 | case OPTION_NO_TLS_GET_ADDR_OPT: |
760 | no_tls_get_addr_opt = 1; | |
761 | break; | |
762 | ||
c5614fa4 AM |
763 | case OPTION_NO_OPD_OPT: |
764 | no_opd_opt = 1; | |
765 | break; | |
766 | ||
767 | case OPTION_NO_TOC_OPT: | |
768 | no_toc_opt = 1; | |
fac1652d | 769 | break; |
3f764659 | 770 | |
4c52953f AM |
771 | case OPTION_NO_MULTI_TOC: |
772 | no_multi_toc = 1; | |
773 | break; | |
774 | ||
d43d0b53 AM |
775 | case OPTION_NO_TOC_SORT: |
776 | no_toc_sort = 1; | |
777 | break; | |
778 | ||
3f764659 JJ |
779 | case OPTION_NON_OVERLAPPING_OPD: |
780 | non_overlapping_opd = 1; | |
781 | break; | |
9c1d81c1 AM |
782 | ' |
783 | ||
1f808cd5 AM |
784 | # Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation |
785 | # | |
836c6af1 | 786 | LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation |
1f808cd5 | 787 | LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
8ded5a0f | 788 | LDEMUL_FINISH=gld${EMULATION_NAME}_finish |
9c1d81c1 | 789 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements |
fac1652d | 790 | LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern |