Commit | Line | Data |
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1f808cd5 | 1 | # This shell script emits a C file. -*- C -*- |
e922bcab | 2 | # Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
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 | ||
9df0ef5f AM |
64 | /* Set if PLT call stubs should load r11. */ |
65 | static int plt_static_chain = 0; | |
66 | ||
0b9a4d73 | 67 | /* Whether to emit symbols for stubs. */ |
b02c4cfa | 68 | static int emit_stub_syms = -1; |
0b9a4d73 AM |
69 | |
70 | static asection *toc_section = 0; | |
71 | ||
3f764659 JJ |
72 | /* Whether to canonicalize .opd so that there are no overlapping |
73 | .opd entries. */ | |
74 | static int non_overlapping_opd = 0; | |
9c1d81c1 AM |
75 | |
76 | /* This is called before the input files are opened. We create a new | |
77 | fake input file to hold the stub sections. */ | |
78 | ||
79 | static void | |
7d8a3a28 | 80 | ppc_create_output_section_statements (void) |
9c1d81c1 | 81 | { |
5503fea1 | 82 | if (!(bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour |
4dfe6ac6 | 83 | && elf_object_id (link_info.output_bfd) == PPC64_ELF_DATA)) |
a015f5ec AM |
84 | return; |
85 | ||
b9cf773d AM |
86 | link_info.wrap_char = '.'; |
87 | ||
9c1d81c1 AM |
88 | stub_file = lang_add_input_file ("linker stubs", |
89 | lang_input_file_is_fake_enum, | |
90 | NULL); | |
f13a99db | 91 | stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd); |
9c1d81c1 AM |
92 | if (stub_file->the_bfd == NULL |
93 | || !bfd_set_arch_mach (stub_file->the_bfd, | |
f13a99db AM |
94 | bfd_get_arch (link_info.output_bfd), |
95 | bfd_get_mach (link_info.output_bfd))) | |
9c1d81c1 | 96 | { |
92b7a70f | 97 | einfo ("%F%P: can not create BFD %E\n"); |
9c1d81c1 AM |
98 | return; |
99 | } | |
100 | ||
d457dcf6 | 101 | stub_file->the_bfd->flags |= BFD_LINKER_CREATED; |
9c1d81c1 | 102 | ldlang_add_file (stub_file); |
68f8ff14 | 103 | ppc64_elf_init_stub_bfd (stub_file->the_bfd, &link_info); |
9c1d81c1 AM |
104 | } |
105 | ||
d43d0b53 AM |
106 | /* Move the input section statement at *U which happens to be on LIST |
107 | to be just before *TO. */ | |
108 | ||
109 | static void | |
110 | move_input_section (lang_statement_list_type *list, | |
111 | lang_statement_union_type **u, | |
112 | lang_statement_union_type **to) | |
113 | { | |
114 | lang_statement_union_type *s = *u; | |
115 | asection *i = s->input_section.section; | |
116 | asection *p, *n; | |
117 | ||
118 | /* Snip the input section from the statement list. If it was the | |
119 | last statement, fix the list tail pointer. */ | |
120 | *u = s->header.next; | |
121 | if (*u == NULL) | |
122 | list->tail = u; | |
123 | /* Add it back in the new position. */ | |
124 | s->header.next = *to; | |
125 | *to = s; | |
126 | if (list->tail == to) | |
127 | list->tail = &s->header.next; | |
128 | ||
129 | /* Trim I off the bfd map_head/map_tail doubly linked lists. */ | |
130 | n = i->map_head.s; | |
131 | p = i->map_tail.s; | |
132 | (p != NULL ? p : i->output_section)->map_head.s = n; | |
133 | (n != NULL ? n : i->output_section)->map_tail.s = p; | |
134 | ||
135 | /* Add I back on in its new position. */ | |
136 | if (s->header.next->header.type == lang_input_section_enum) | |
137 | { | |
138 | n = s->header.next->input_section.section; | |
139 | p = n->map_tail.s; | |
140 | } | |
141 | else | |
142 | { | |
143 | /* If the next statement is not an input section statement then | |
144 | TO must point at the previous input section statement | |
145 | header.next field. */ | |
146 | lang_input_section_type *prev = (lang_input_section_type *) | |
147 | ((char *) to - offsetof (lang_statement_union_type, header.next)); | |
148 | ||
149 | ASSERT (prev->header.type == lang_input_section_enum); | |
150 | p = prev->section; | |
151 | n = p->map_head.s; | |
152 | } | |
153 | i->map_head.s = n; | |
154 | i->map_tail.s = p; | |
155 | (p != NULL ? p : i->output_section)->map_head.s = i; | |
156 | (n != NULL ? n : i->output_section)->map_tail.s = i; | |
157 | } | |
158 | ||
159 | /* Sort input section statements in the linker script tree rooted at | |
160 | LIST so that those whose owning bfd happens to have a section | |
161 | called .init or .fini are placed first. Place any TOC sections | |
162 | referenced by small TOC relocs next, with TOC sections referenced | |
163 | only by bigtoc relocs last. */ | |
164 | ||
165 | static void | |
166 | sort_toc_sections (lang_statement_list_type *list, | |
167 | lang_statement_union_type **ini, | |
168 | lang_statement_union_type **small) | |
169 | { | |
170 | lang_statement_union_type *s, **u; | |
171 | asection *i; | |
172 | ||
173 | u = &list->head; | |
174 | while ((s = *u) != NULL) | |
175 | { | |
176 | switch (s->header.type) | |
177 | { | |
178 | case lang_wild_statement_enum: | |
179 | sort_toc_sections (&s->wild_statement.children, ini, small); | |
180 | break; | |
181 | ||
182 | case lang_group_statement_enum: | |
183 | sort_toc_sections (&s->group_statement.children, ini, small); | |
184 | break; | |
185 | ||
186 | case lang_input_section_enum: | |
187 | i = s->input_section.section; | |
188 | /* Leave the stub_file .got where it is. We put the .got | |
189 | header there. */ | |
190 | if (i->owner == stub_file->the_bfd) | |
191 | break; | |
192 | if (bfd_get_section_by_name (i->owner, ".init") != NULL | |
193 | || bfd_get_section_by_name (i->owner, ".fini") != NULL) | |
194 | { | |
195 | if (ini != NULL && *ini != s) | |
196 | { | |
197 | move_input_section (list, u, ini); | |
198 | if (small == ini) | |
199 | small = &s->header.next; | |
200 | ini = &s->header.next; | |
201 | continue; | |
202 | } | |
203 | if (small == ini) | |
204 | small = &s->header.next; | |
205 | ini = &s->header.next; | |
206 | break; | |
207 | } | |
208 | else if (ini == NULL) | |
209 | ini = u; | |
210 | ||
211 | if (ppc64_elf_has_small_toc_reloc (i)) | |
212 | { | |
213 | if (small != NULL && *small != s) | |
214 | { | |
215 | move_input_section (list, u, small); | |
216 | small = &s->header.next; | |
217 | continue; | |
218 | } | |
219 | small = &s->header.next; | |
220 | } | |
221 | else if (small == NULL) | |
222 | small = u; | |
223 | break; | |
224 | ||
225 | default: | |
226 | break; | |
227 | } | |
228 | u = &s->header.next; | |
229 | } | |
230 | } | |
231 | ||
ba761f19 AM |
232 | static void |
233 | prelim_size_sections (void) | |
234 | { | |
235 | if (expld.phase != lang_mark_phase_enum) | |
236 | { | |
237 | expld.phase = lang_mark_phase_enum; | |
238 | expld.dataseg.phase = exp_dataseg_none; | |
239 | one_lang_size_sections_pass (NULL, FALSE); | |
240 | /* We must not cache anything from the preliminary sizing. */ | |
241 | lang_reset_memory_regions (); | |
242 | } | |
243 | } | |
244 | ||
836c6af1 | 245 | static void |
7d8a3a28 | 246 | ppc_before_allocation (void) |
836c6af1 | 247 | { |
a015f5ec | 248 | if (stub_file != NULL) |
e0468e59 | 249 | { |
74f0fb50 | 250 | if (!no_opd_opt |
33c0ec9d | 251 | && !ppc64_elf_edit_opd (&link_info, non_overlapping_opd)) |
92b7a70f | 252 | einfo ("%X%P: can not edit %s %E\n", "opd"); |
e5096e3f | 253 | |
33c0ec9d | 254 | if (ppc64_elf_tls_setup (&link_info, no_tls_get_addr_opt, &no_multi_toc) |
f13a99db | 255 | && !no_tls_opt) |
a015f5ec AM |
256 | { |
257 | /* Size the sections. This is premature, but we want to know the | |
258 | TLS segment layout so that certain optimizations can be done. */ | |
ba761f19 | 259 | prelim_size_sections (); |
a015f5ec | 260 | |
33c0ec9d | 261 | if (!ppc64_elf_tls_optimize (&link_info)) |
92b7a70f | 262 | einfo ("%X%P: TLS problem %E\n"); |
a015f5ec | 263 | } |
c5614fa4 AM |
264 | |
265 | if (!no_toc_opt | |
ba761f19 AM |
266 | && !link_info.relocatable) |
267 | { | |
268 | prelim_size_sections (); | |
269 | ||
270 | if (!ppc64_elf_edit_toc (&link_info)) | |
271 | einfo ("%X%P: can not edit %s %E\n", "toc"); | |
272 | } | |
d43d0b53 AM |
273 | |
274 | if (!no_toc_sort) | |
275 | { | |
276 | lang_output_section_statement_type *toc_os; | |
277 | ||
278 | toc_os = lang_output_section_find (".got"); | |
279 | if (toc_os != NULL) | |
280 | sort_toc_sections (&toc_os->children, NULL, NULL); | |
281 | } | |
e0468e59 AM |
282 | } |
283 | ||
836c6af1 AM |
284 | gld${EMULATION_NAME}_before_allocation (); |
285 | } | |
286 | ||
9c1d81c1 AM |
287 | struct hook_stub_info |
288 | { | |
289 | lang_statement_list_type add; | |
290 | asection *input_section; | |
291 | }; | |
292 | ||
293 | /* Traverse the linker tree to find the spot where the stub goes. */ | |
294 | ||
b34976b6 | 295 | static bfd_boolean |
7d8a3a28 | 296 | hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) |
9c1d81c1 AM |
297 | { |
298 | lang_statement_union_type *l; | |
b34976b6 | 299 | bfd_boolean ret; |
9c1d81c1 AM |
300 | |
301 | for (; (l = *lp) != NULL; lp = &l->header.next) | |
302 | { | |
303 | switch (l->header.type) | |
304 | { | |
305 | case lang_constructors_statement_enum: | |
306 | ret = hook_in_stub (info, &constructor_list.head); | |
307 | if (ret) | |
308 | return ret; | |
309 | break; | |
310 | ||
311 | case lang_output_section_statement_enum: | |
312 | ret = hook_in_stub (info, | |
313 | &l->output_section_statement.children.head); | |
314 | if (ret) | |
315 | return ret; | |
316 | break; | |
317 | ||
318 | case lang_wild_statement_enum: | |
319 | ret = hook_in_stub (info, &l->wild_statement.children.head); | |
320 | if (ret) | |
321 | return ret; | |
322 | break; | |
323 | ||
324 | case lang_group_statement_enum: | |
325 | ret = hook_in_stub (info, &l->group_statement.children.head); | |
326 | if (ret) | |
327 | return ret; | |
328 | break; | |
329 | ||
330 | case lang_input_section_enum: | |
331 | if (l->input_section.section == info->input_section) | |
332 | { | |
333 | /* We've found our section. Insert the stub immediately | |
334 | before its associated input section. */ | |
335 | *lp = info->add.head; | |
336 | *(info->add.tail) = l; | |
b34976b6 | 337 | return TRUE; |
9c1d81c1 AM |
338 | } |
339 | break; | |
340 | ||
341 | case lang_data_statement_enum: | |
342 | case lang_reloc_statement_enum: | |
343 | case lang_object_symbols_statement_enum: | |
344 | case lang_output_statement_enum: | |
345 | case lang_target_statement_enum: | |
346 | case lang_input_statement_enum: | |
347 | case lang_assignment_statement_enum: | |
348 | case lang_padding_statement_enum: | |
349 | case lang_address_statement_enum: | |
350 | case lang_fill_statement_enum: | |
351 | break; | |
352 | ||
353 | default: | |
354 | FAIL (); | |
355 | break; | |
356 | } | |
357 | } | |
b34976b6 | 358 | return FALSE; |
9c1d81c1 AM |
359 | } |
360 | ||
361 | ||
362 | /* Call-back for ppc64_elf_size_stubs. */ | |
363 | ||
364 | /* Create a new stub section, and arrange for it to be linked | |
365 | immediately before INPUT_SECTION. */ | |
366 | ||
367 | static asection * | |
7d8a3a28 | 368 | ppc_add_stub_section (const char *stub_sec_name, asection *input_section) |
9c1d81c1 AM |
369 | { |
370 | asection *stub_sec; | |
371 | flagword flags; | |
372 | asection *output_section; | |
373 | const char *secname; | |
374 | lang_output_section_statement_type *os; | |
375 | struct hook_stub_info info; | |
376 | ||
9c1d81c1 | 377 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
e4e0193e | 378 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_KEEP); |
9795b468 AM |
379 | stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd, |
380 | stub_sec_name, flags); | |
381 | if (stub_sec == NULL) | |
9c1d81c1 AM |
382 | goto err_ret; |
383 | ||
384 | output_section = input_section->output_section; | |
385 | secname = bfd_get_section_name (output_section->owner, output_section); | |
386 | os = lang_output_section_find (secname); | |
387 | ||
388 | info.input_section = input_section; | |
389 | lang_list_init (&info.add); | |
7b986e99 | 390 | lang_add_section (&info.add, stub_sec, os); |
9c1d81c1 AM |
391 | |
392 | if (info.add.head == NULL) | |
393 | goto err_ret; | |
394 | ||
68f8ff14 | 395 | stub_added = 1; |
9c1d81c1 AM |
396 | if (hook_in_stub (&info, &os->children.head)) |
397 | return stub_sec; | |
398 | ||
399 | err_ret: | |
400 | einfo ("%X%P: can not make stub section: %E\n"); | |
401 | return NULL; | |
402 | } | |
403 | ||
404 | ||
405 | /* Another call-back for ppc64_elf_size_stubs. */ | |
406 | ||
407 | static void | |
7d8a3a28 | 408 | ppc_layout_sections_again (void) |
9c1d81c1 AM |
409 | { |
410 | /* If we have changed sizes of the stub sections, then we need | |
411 | to recalculate all the section offsets. This may mean we need to | |
412 | add even more stubs. */ | |
8ded5a0f | 413 | gld${EMULATION_NAME}_map_segments (TRUE); |
1f808cd5 | 414 | |
1049f94e | 415 | if (!link_info.relocatable) |
f13a99db AM |
416 | _bfd_set_gp_value (link_info.output_bfd, |
417 | ppc64_elf_toc (link_info.output_bfd)); | |
eaeb0a9d AM |
418 | |
419 | need_laying_out = -1; | |
1f808cd5 AM |
420 | } |
421 | ||
9c1d81c1 | 422 | |
0b9a4d73 | 423 | static void |
7d8a3a28 | 424 | build_toc_list (lang_statement_union_type *statement) |
0b9a4d73 | 425 | { |
7b986e99 AM |
426 | if (statement->header.type == lang_input_section_enum) |
427 | { | |
428 | asection *i = statement->input_section.section; | |
429 | ||
430 | if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag | |
431 | && (i->flags & SEC_EXCLUDE) == 0 | |
432 | && i->output_section == toc_section) | |
927be08e AM |
433 | { |
434 | if (!ppc64_elf_next_toc_section (&link_info, i)) | |
435 | einfo ("%X%P: linker script separates .got and .toc\n"); | |
436 | } | |
7b986e99 | 437 | } |
0b9a4d73 AM |
438 | } |
439 | ||
440 | ||
9c1d81c1 | 441 | static void |
7d8a3a28 | 442 | build_section_lists (lang_statement_union_type *statement) |
9c1d81c1 | 443 | { |
7b986e99 | 444 | if (statement->header.type == lang_input_section_enum) |
9c1d81c1 | 445 | { |
7b986e99 AM |
446 | asection *i = statement->input_section.section; |
447 | ||
448 | if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag | |
449 | && (i->flags & SEC_EXCLUDE) == 0 | |
450 | && i->output_section != NULL | |
f13a99db | 451 | && i->output_section->owner == link_info.output_bfd) |
7b986e99 AM |
452 | { |
453 | if (!ppc64_elf_next_input_section (&link_info, i)) | |
454 | einfo ("%X%P: can not size stub section: %E\n"); | |
455 | } | |
9c1d81c1 AM |
456 | } |
457 | } | |
458 | ||
fac1652d | 459 | |
eaeb0a9d AM |
460 | /* Call the back-end function to set TOC base after we have placed all |
461 | the sections. */ | |
1f808cd5 | 462 | static void |
eaeb0a9d | 463 | gld${EMULATION_NAME}_after_allocation (void) |
1f808cd5 | 464 | { |
eaeb0a9d AM |
465 | /* bfd_elf_discard_info just plays with data and debugging sections, |
466 | ie. doesn't affect code size, so we can delay resizing the | |
deb04cdb AM |
467 | sections. It's likely we'll resize everything in the process of |
468 | adding stubs. */ | |
f13a99db | 469 | if (bfd_elf_discard_info (link_info.output_bfd, &link_info)) |
deb04cdb AM |
470 | need_laying_out = 1; |
471 | ||
836c6af1 AM |
472 | /* If generating a relocatable output file, then we don't have any |
473 | stubs. */ | |
1049f94e | 474 | if (stub_file != NULL && !link_info.relocatable) |
1f808cd5 | 475 | { |
927be08e AM |
476 | int ret = ppc64_elf_setup_section_lists (&link_info, |
477 | &ppc_add_stub_section, | |
478 | &ppc_layout_sections_again); | |
92b7a70f AM |
479 | if (ret < 0) |
480 | einfo ("%X%P: can not size stub section: %E\n"); | |
481 | else if (ret > 0) | |
9c1d81c1 | 482 | { |
927be08e AM |
483 | ppc64_elf_start_multitoc_partition (&link_info); |
484 | ||
485 | if (!no_multi_toc) | |
486 | { | |
487 | toc_section = bfd_get_section_by_name (link_info.output_bfd, | |
488 | ".got"); | |
489 | if (toc_section != NULL) | |
490 | lang_for_each_statement (build_toc_list); | |
491 | } | |
492 | ||
493 | if (ppc64_elf_layout_multitoc (&link_info) | |
494 | && !no_multi_toc | |
495 | && toc_section != NULL) | |
0b9a4d73 AM |
496 | lang_for_each_statement (build_toc_list); |
497 | ||
927be08e | 498 | ppc64_elf_finish_multitoc_partition (&link_info); |
0b9a4d73 | 499 | |
836c6af1 | 500 | lang_for_each_statement (build_section_lists); |
9c1d81c1 | 501 | |
70cc837d AM |
502 | if (!ppc64_elf_check_init_fini (&link_info)) |
503 | einfo ("%P: .init/.fini fragments use differing TOC pointers\n"); | |
504 | ||
836c6af1 | 505 | /* Call into the BFD backend to do the real work. */ |
9df0ef5f | 506 | if (!ppc64_elf_size_stubs (&link_info, group_size, plt_static_chain)) |
92b7a70f | 507 | einfo ("%X%P: can not size stub section: %E\n"); |
1f808cd5 | 508 | } |
9c1d81c1 | 509 | } |
1f808cd5 | 510 | |
8ded5a0f | 511 | if (need_laying_out != -1) |
eaeb0a9d AM |
512 | { |
513 | gld${EMULATION_NAME}_map_segments (need_laying_out); | |
514 | ||
515 | if (!link_info.relocatable) | |
516 | _bfd_set_gp_value (link_info.output_bfd, | |
517 | ppc64_elf_toc (link_info.output_bfd)); | |
518 | } | |
519 | } | |
520 | ||
521 | ||
522 | /* Final emulation specific call. */ | |
523 | ||
524 | static void | |
525 | gld${EMULATION_NAME}_finish (void) | |
526 | { | |
527 | /* e_entry on PowerPC64 points to the function descriptor for | |
528 | _start. If _start is missing, default to the first function | |
529 | descriptor in the .opd section. */ | |
530 | entry_section = ".opd"; | |
deb04cdb | 531 | |
40e45c8b AM |
532 | if (link_info.relocatable) |
533 | { | |
f13a99db | 534 | asection *toc = bfd_get_section_by_name (link_info.output_bfd, ".toc"); |
40e45c8b | 535 | if (toc != NULL |
f13a99db | 536 | && bfd_section_size (link_info.output_bfd, toc) > 0x10000) |
40e45c8b AM |
537 | einfo ("%X%P: TOC section size exceeds 64k\n"); |
538 | } | |
539 | ||
68f8ff14 | 540 | if (stub_added) |
9c1d81c1 | 541 | { |
bda6c678 AM |
542 | char *msg = NULL; |
543 | char *line, *endline; | |
544 | ||
b02c4cfa AM |
545 | if (emit_stub_syms < 0) |
546 | emit_stub_syms = 1; | |
bda6c678 AM |
547 | if (!ppc64_elf_build_stubs (emit_stub_syms, &link_info, |
548 | config.stats ? &msg : NULL)) | |
9c1d81c1 | 549 | einfo ("%X%P: can not build stubs: %E\n"); |
bda6c678 | 550 | |
e922bcab | 551 | fflush (stdout); |
bda6c678 AM |
552 | for (line = msg; line != NULL; line = endline) |
553 | { | |
554 | endline = strchr (line, '\n'); | |
555 | if (endline != NULL) | |
556 | *endline++ = '\0'; | |
557 | fprintf (stderr, "%s: %s\n", program_name, line); | |
558 | } | |
e922bcab | 559 | fflush (stderr); |
bda6c678 AM |
560 | if (msg != NULL) |
561 | free (msg); | |
9c1d81c1 | 562 | } |
99877b66 AM |
563 | |
564 | ppc64_elf_restore_symbols (&link_info); | |
1e035701 | 565 | finish_default (); |
9c1d81c1 | 566 | } |
1f808cd5 | 567 | |
76dc39fe | 568 | |
fac1652d AM |
569 | /* Add a pattern matching ".foo" for every "foo" in a version script. |
570 | ||
571 | The reason for doing this is that many shared library version | |
572 | scripts export a selected set of functions or data symbols, forcing | |
573 | others local. eg. | |
574 | ||
575 | . VERS_1 { | |
576 | . global: | |
577 | . this; that; some; thing; | |
578 | . local: | |
579 | . *; | |
580 | . }; | |
581 | ||
582 | To make the above work for PowerPC64, we need to export ".this", | |
583 | ".that" and so on, otherwise only the function descriptor syms are | |
584 | exported. Lack of an exported function code sym may cause a | |
585 | definition to be pulled in from a static library. */ | |
586 | ||
7d8a3a28 AM |
587 | static struct bfd_elf_version_expr * |
588 | gld${EMULATION_NAME}_new_vers_pattern (struct bfd_elf_version_expr *entry) | |
fac1652d AM |
589 | { |
590 | struct bfd_elf_version_expr *dot_entry; | |
fac1652d AM |
591 | unsigned int len; |
592 | char *dot_pat; | |
593 | ||
b7b7fe3f | 594 | if (!dotsyms |
ae5a3597 AM |
595 | || entry->pattern[0] == '.' |
596 | || (!entry->literal && entry->pattern[0] == '*')) | |
fac1652d AM |
597 | return entry; |
598 | ||
7d8a3a28 | 599 | dot_entry = xmalloc (sizeof *dot_entry); |
108ba305 | 600 | *dot_entry = *entry; |
fac1652d | 601 | dot_entry->next = entry; |
ae5a3597 AM |
602 | len = strlen (entry->pattern) + 2; |
603 | dot_pat = xmalloc (len); | |
604 | dot_pat[0] = '.'; | |
605 | memcpy (dot_pat + 1, entry->pattern, len - 1); | |
606 | dot_entry->pattern = dot_pat; | |
71755fdf | 607 | dot_entry->script = 1; |
fac1652d AM |
608 | return dot_entry; |
609 | } | |
610 | ||
611 | ||
9c1d81c1 AM |
612 | /* Avoid processing the fake stub_file in vercheck, stat_needed and |
613 | check_needed routines. */ | |
1f808cd5 | 614 | |
7d8a3a28 | 615 | static void (*real_func) (lang_input_statement_type *); |
1f808cd5 | 616 | |
7d8a3a28 | 617 | static void ppc_for_each_input_file_wrapper (lang_input_statement_type *l) |
9c1d81c1 AM |
618 | { |
619 | if (l != stub_file) | |
620 | (*real_func) (l); | |
1f808cd5 | 621 | } |
9c1d81c1 AM |
622 | |
623 | static void | |
7d8a3a28 | 624 | ppc_lang_for_each_input_file (void (*func) (lang_input_statement_type *)) |
9c1d81c1 AM |
625 | { |
626 | real_func = func; | |
627 | lang_for_each_input_file (&ppc_for_each_input_file_wrapper); | |
628 | } | |
629 | ||
630 | #define lang_for_each_input_file ppc_lang_for_each_input_file | |
631 | ||
1f808cd5 AM |
632 | EOF |
633 | ||
dc27aea4 | 634 | if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then |
92b93329 | 635 | fragment <<EOF |
dc27aea4 AM |
636 | /* Special handling for embedded SPU executables. */ |
637 | extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *); | |
638 | static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *); | |
639 | ||
640 | static bfd_boolean | |
641 | ppc64_recognized_file (lang_input_statement_type *entry) | |
642 | { | |
643 | if (embedded_spu_file (entry, "-m64")) | |
644 | return TRUE; | |
645 | ||
646 | return gld${EMULATION_NAME}_load_symbols (entry); | |
647 | } | |
648 | EOF | |
649 | LDEMUL_RECOGNIZED_FILE=ppc64_recognized_file | |
650 | fi | |
651 | ||
9c1d81c1 AM |
652 | # Define some shell vars to insert bits of code into the standard elf |
653 | # parse_args and list_options functions. | |
654 | # | |
58d180e8 AM |
655 | PARSE_AND_LIST_PROLOGUE=${PARSE_AND_LIST_PROLOGUE}' |
656 | #define OPTION_STUBGROUP_SIZE 321 | |
9df0ef5f AM |
657 | #define OPTION_PLT_STATIC_CHAIN (OPTION_STUBGROUP_SIZE + 1) |
658 | #define OPTION_NO_PLT_STATIC_CHAIN (OPTION_PLT_STATIC_CHAIN + 1) | |
659 | #define OPTION_STUBSYMS (OPTION_NO_PLT_STATIC_CHAIN + 1) | |
b02c4cfa AM |
660 | #define OPTION_NO_STUBSYMS (OPTION_STUBSYMS + 1) |
661 | #define OPTION_DOTSYMS (OPTION_NO_STUBSYMS + 1) | |
fac1652d | 662 | #define OPTION_NO_DOTSYMS (OPTION_DOTSYMS + 1) |
e5096e3f | 663 | #define OPTION_NO_TLS_OPT (OPTION_NO_DOTSYMS + 1) |
a7f2871e AM |
664 | #define OPTION_NO_TLS_GET_ADDR_OPT (OPTION_NO_TLS_OPT + 1) |
665 | #define OPTION_NO_OPD_OPT (OPTION_NO_TLS_GET_ADDR_OPT + 1) | |
c5614fa4 | 666 | #define OPTION_NO_TOC_OPT (OPTION_NO_OPD_OPT + 1) |
4c52953f | 667 | #define OPTION_NO_MULTI_TOC (OPTION_NO_TOC_OPT + 1) |
d43d0b53 AM |
668 | #define OPTION_NO_TOC_SORT (OPTION_NO_MULTI_TOC + 1) |
669 | #define OPTION_NON_OVERLAPPING_OPD (OPTION_NO_TOC_SORT + 1) | |
9c1d81c1 AM |
670 | ' |
671 | ||
58d180e8 | 672 | PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}' |
9c1d81c1 | 673 | { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, |
9df0ef5f AM |
674 | { "plt-static-chain", no_argument, NULL, OPTION_PLT_STATIC_CHAIN }, |
675 | { "no-plt-static-chain", no_argument, NULL, OPTION_NO_PLT_STATIC_CHAIN }, | |
0b9a4d73 | 676 | { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS }, |
b02c4cfa | 677 | { "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS }, |
fac1652d AM |
678 | { "dotsyms", no_argument, NULL, OPTION_DOTSYMS }, |
679 | { "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS }, | |
e5096e3f | 680 | { "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT }, |
a7f2871e | 681 | { "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT }, |
c5614fa4 AM |
682 | { "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT }, |
683 | { "no-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT }, | |
4c52953f | 684 | { "no-multi-toc", no_argument, NULL, OPTION_NO_MULTI_TOC }, |
d43d0b53 | 685 | { "no-toc-sort", no_argument, NULL, OPTION_NO_TOC_SORT }, |
3f764659 | 686 | { "non-overlapping-opd", no_argument, NULL, OPTION_NON_OVERLAPPING_OPD }, |
9c1d81c1 AM |
687 | ' |
688 | ||
58d180e8 | 689 | PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}' |
9c1d81c1 | 690 | fprintf (file, _("\ |
442996ee AM |
691 | --stub-group-size=N Maximum size of a group of input sections that\n\ |
692 | can be handled by one stub section. A negative\n\ | |
693 | value locates all stubs before their branches\n\ | |
694 | (with a group size of -N), while a positive\n\ | |
695 | value allows two groups of input sections, one\n\ | |
696 | before, and one after each stub section.\n\ | |
697 | Values of +/-1 indicate the linker should\n\ | |
698 | choose suitable defaults.\n" | |
9c1d81c1 | 699 | )); |
fac1652d | 700 | fprintf (file, _("\ |
9df0ef5f AM |
701 | --plt-static-chain PLT call stubs should load r11.\n" |
702 | )); | |
703 | fprintf (file, _("\ | |
704 | --no-plt-static-chain PLT call stubs should not load r11. (default)\n" | |
705 | )); | |
706 | fprintf (file, _("\ | |
442996ee | 707 | --emit-stub-syms Label linker stubs with a symbol.\n" |
0b9a4d73 AM |
708 | )); |
709 | fprintf (file, _("\ | |
b02c4cfa AM |
710 | --no-emit-stub-syms Don'\''t label linker stubs with a symbol.\n" |
711 | )); | |
712 | fprintf (file, _("\ | |
442996ee AM |
713 | --dotsyms For every version pattern \"foo\" in a version\n\ |
714 | script, add \".foo\" so that function code\n\ | |
715 | symbols are treated the same as function\n\ | |
716 | descriptor symbols. Defaults to on.\n" | |
fac1652d AM |
717 | )); |
718 | fprintf (file, _("\ | |
442996ee | 719 | --no-dotsyms Don'\''t do anything special in version scripts.\n" |
fac1652d | 720 | )); |
e5096e3f | 721 | fprintf (file, _("\ |
442996ee | 722 | --no-tls-optimize Don'\''t try to optimize TLS accesses.\n" |
e5096e3f | 723 | )); |
3f764659 | 724 | fprintf (file, _("\ |
a7f2871e AM |
725 | --no-tls-get-addr-optimize Don'\''t use a special __tls_get_addr call.\n" |
726 | )); | |
727 | fprintf (file, _("\ | |
442996ee | 728 | --no-opd-optimize Don'\''t optimize the OPD section.\n" |
c5614fa4 AM |
729 | )); |
730 | fprintf (file, _("\ | |
442996ee | 731 | --no-toc-optimize Don'\''t optimize the TOC section.\n" |
c5614fa4 AM |
732 | )); |
733 | fprintf (file, _("\ | |
442996ee | 734 | --no-multi-toc Disallow automatic multiple toc sections.\n" |
4c52953f AM |
735 | )); |
736 | fprintf (file, _("\ | |
d43d0b53 AM |
737 | --no-toc-sort Don'\''t sort TOC and GOT sections.\n" |
738 | )); | |
739 | fprintf (file, _("\ | |
442996ee AM |
740 | --non-overlapping-opd Canonicalize .opd, so that there are no\n\ |
741 | overlapping .opd entries.\n" | |
3f764659 | 742 | )); |
9c1d81c1 AM |
743 | ' |
744 | ||
58d180e8 | 745 | PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}' |
9c1d81c1 AM |
746 | case OPTION_STUBGROUP_SIZE: |
747 | { | |
748 | const char *end; | |
749 | group_size = bfd_scan_vma (optarg, &end, 0); | |
750 | if (*end) | |
751 | einfo (_("%P%F: invalid number `%s'\''\n"), optarg); | |
752 | } | |
753 | break; | |
fac1652d | 754 | |
9df0ef5f AM |
755 | case OPTION_PLT_STATIC_CHAIN: |
756 | plt_static_chain = 1; | |
757 | break; | |
758 | ||
759 | case OPTION_NO_PLT_STATIC_CHAIN: | |
760 | plt_static_chain = 0; | |
761 | break; | |
762 | ||
0b9a4d73 AM |
763 | case OPTION_STUBSYMS: |
764 | emit_stub_syms = 1; | |
765 | break; | |
766 | ||
b02c4cfa AM |
767 | case OPTION_NO_STUBSYMS: |
768 | emit_stub_syms = 0; | |
769 | break; | |
770 | ||
fac1652d | 771 | case OPTION_DOTSYMS: |
e5096e3f | 772 | dotsyms = 1; |
fac1652d AM |
773 | break; |
774 | ||
775 | case OPTION_NO_DOTSYMS: | |
e5096e3f AM |
776 | dotsyms = 0; |
777 | break; | |
778 | ||
779 | case OPTION_NO_TLS_OPT: | |
c5614fa4 AM |
780 | no_tls_opt = 1; |
781 | break; | |
782 | ||
a7f2871e AM |
783 | case OPTION_NO_TLS_GET_ADDR_OPT: |
784 | no_tls_get_addr_opt = 1; | |
785 | break; | |
786 | ||
c5614fa4 AM |
787 | case OPTION_NO_OPD_OPT: |
788 | no_opd_opt = 1; | |
789 | break; | |
790 | ||
791 | case OPTION_NO_TOC_OPT: | |
792 | no_toc_opt = 1; | |
fac1652d | 793 | break; |
3f764659 | 794 | |
4c52953f AM |
795 | case OPTION_NO_MULTI_TOC: |
796 | no_multi_toc = 1; | |
797 | break; | |
798 | ||
d43d0b53 AM |
799 | case OPTION_NO_TOC_SORT: |
800 | no_toc_sort = 1; | |
801 | break; | |
802 | ||
3f764659 JJ |
803 | case OPTION_NON_OVERLAPPING_OPD: |
804 | non_overlapping_opd = 1; | |
805 | break; | |
9c1d81c1 AM |
806 | ' |
807 | ||
1f808cd5 AM |
808 | # Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation |
809 | # | |
836c6af1 | 810 | LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation |
1f808cd5 | 811 | LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
8ded5a0f | 812 | LDEMUL_FINISH=gld${EMULATION_NAME}_finish |
9c1d81c1 | 813 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements |
fac1652d | 814 | LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern |