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1f808cd5 | 1 | # This shell script emits a C file. -*- C -*- |
b9cf773d | 2 | # Copyright 2002, 2003, 2004 Free Software Foundation, Inc. |
1f808cd5 AM |
3 | # |
4 | # This file is part of GLD, the Gnu Linker. | |
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 | |
8 | # the Free Software Foundation; either version 2 of the License, or | |
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 | |
18 | # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | # | |
20 | ||
21 | # This file is sourced from elf32.em, and defines extra powerpc64-elf | |
22 | # specific routines. | |
23 | # | |
24 | cat >>e${EMULATION_NAME}.c <<EOF | |
25 | ||
9c1d81c1 | 26 | #include "ldctor.h" |
805fc799 | 27 | #include "libbfd.h" |
83490352 | 28 | #include "elf-bfd.h" |
1f808cd5 AM |
29 | #include "elf64-ppc.h" |
30 | ||
9c1d81c1 AM |
31 | /* Fake input file for stubs. */ |
32 | static lang_input_statement_type *stub_file; | |
68f8ff14 | 33 | static int stub_added = 0; |
9c1d81c1 AM |
34 | |
35 | /* Whether we need to call ppc_layout_sections_again. */ | |
1f808cd5 AM |
36 | static int need_laying_out = 0; |
37 | ||
9c1d81c1 AM |
38 | /* Maximum size of a group of input sections that can be handled by |
39 | one stub section. A value of +/-1 indicates the bfd back-end | |
40 | should use a suitable default size. */ | |
41 | static bfd_signed_vma group_size = 1; | |
42 | ||
fac1652d AM |
43 | /* Whether to add ".foo" entries for each "foo" in a version script. */ |
44 | static int dotsyms = 1; | |
45 | ||
e5096e3f | 46 | /* Whether to run tls optimization. */ |
c5614fa4 AM |
47 | static int no_tls_opt = 0; |
48 | ||
49 | /* Whether to run opd optimization. */ | |
50 | static int no_opd_opt = 0; | |
51 | ||
52 | /* Whether to run toc optimization. */ | |
53 | static int no_toc_opt = 0; | |
e5096e3f | 54 | |
0b9a4d73 AM |
55 | /* Whether to emit symbols for stubs. */ |
56 | static int emit_stub_syms = 0; | |
57 | ||
58 | static asection *toc_section = 0; | |
59 | ||
3f764659 JJ |
60 | /* Whether to canonicalize .opd so that there are no overlapping |
61 | .opd entries. */ | |
62 | static int non_overlapping_opd = 0; | |
9c1d81c1 AM |
63 | |
64 | /* This is called before the input files are opened. We create a new | |
65 | fake input file to hold the stub sections. */ | |
66 | ||
67 | static void | |
7d8a3a28 | 68 | ppc_create_output_section_statements (void) |
9c1d81c1 | 69 | { |
a015f5ec AM |
70 | extern const bfd_target bfd_elf64_powerpc_vec; |
71 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
72 | ||
73 | if (link_info.hash->creator != &bfd_elf64_powerpc_vec | |
74 | && link_info.hash->creator != &bfd_elf64_powerpcle_vec) | |
75 | return; | |
76 | ||
b9cf773d AM |
77 | link_info.wrap_char = '.'; |
78 | ||
9c1d81c1 AM |
79 | stub_file = lang_add_input_file ("linker stubs", |
80 | lang_input_file_is_fake_enum, | |
81 | NULL); | |
82 | stub_file->the_bfd = bfd_create ("linker stubs", output_bfd); | |
83 | if (stub_file->the_bfd == NULL | |
84 | || !bfd_set_arch_mach (stub_file->the_bfd, | |
85 | bfd_get_arch (output_bfd), | |
86 | bfd_get_mach (output_bfd))) | |
87 | { | |
88 | einfo ("%X%P: can not create BFD %E\n"); | |
89 | return; | |
90 | } | |
91 | ||
92 | ldlang_add_file (stub_file); | |
68f8ff14 | 93 | ppc64_elf_init_stub_bfd (stub_file->the_bfd, &link_info); |
9c1d81c1 AM |
94 | } |
95 | ||
836c6af1 | 96 | static void |
7d8a3a28 | 97 | ppc_before_allocation (void) |
836c6af1 | 98 | { |
a015f5ec | 99 | if (stub_file != NULL) |
e0468e59 | 100 | { |
c5614fa4 AM |
101 | if (!no_opd_opt |
102 | && !ppc64_elf_edit_opd (output_bfd, &link_info, non_overlapping_opd)) | |
e5096e3f | 103 | { |
c5614fa4 | 104 | einfo ("%X%P: can not edit %s %E\n", "opd"); |
e5096e3f AM |
105 | return; |
106 | } | |
107 | ||
c5614fa4 | 108 | if (ppc64_elf_tls_setup (output_bfd, &link_info) && !no_tls_opt) |
a015f5ec AM |
109 | { |
110 | /* Size the sections. This is premature, but we want to know the | |
111 | TLS segment layout so that certain optimizations can be done. */ | |
112 | lang_size_sections (stat_ptr->head, abs_output_section, | |
7d8a3a28 | 113 | &stat_ptr->head, 0, 0, NULL, TRUE); |
a015f5ec AM |
114 | |
115 | if (!ppc64_elf_tls_optimize (output_bfd, &link_info)) | |
116 | { | |
117 | einfo ("%X%P: TLS problem %E\n"); | |
118 | return; | |
119 | } | |
120 | ||
83490352 AM |
121 | /* We must not cache anything from the preliminary sizing. */ |
122 | elf_tdata (output_bfd)->program_header_size = 0; | |
a015f5ec AM |
123 | lang_reset_memory_regions (); |
124 | } | |
c5614fa4 AM |
125 | |
126 | if (!no_toc_opt | |
127 | && !link_info.relocatable | |
128 | && !ppc64_elf_edit_toc (output_bfd, &link_info)) | |
129 | { | |
130 | einfo ("%X%P: can not edit %s %E\n", "toc"); | |
131 | return; | |
132 | } | |
e0468e59 AM |
133 | } |
134 | ||
836c6af1 AM |
135 | gld${EMULATION_NAME}_before_allocation (); |
136 | } | |
137 | ||
9c1d81c1 AM |
138 | struct hook_stub_info |
139 | { | |
140 | lang_statement_list_type add; | |
141 | asection *input_section; | |
142 | }; | |
143 | ||
144 | /* Traverse the linker tree to find the spot where the stub goes. */ | |
145 | ||
b34976b6 | 146 | static bfd_boolean |
7d8a3a28 | 147 | hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) |
9c1d81c1 AM |
148 | { |
149 | lang_statement_union_type *l; | |
b34976b6 | 150 | bfd_boolean ret; |
9c1d81c1 AM |
151 | |
152 | for (; (l = *lp) != NULL; lp = &l->header.next) | |
153 | { | |
154 | switch (l->header.type) | |
155 | { | |
156 | case lang_constructors_statement_enum: | |
157 | ret = hook_in_stub (info, &constructor_list.head); | |
158 | if (ret) | |
159 | return ret; | |
160 | break; | |
161 | ||
162 | case lang_output_section_statement_enum: | |
163 | ret = hook_in_stub (info, | |
164 | &l->output_section_statement.children.head); | |
165 | if (ret) | |
166 | return ret; | |
167 | break; | |
168 | ||
169 | case lang_wild_statement_enum: | |
170 | ret = hook_in_stub (info, &l->wild_statement.children.head); | |
171 | if (ret) | |
172 | return ret; | |
173 | break; | |
174 | ||
175 | case lang_group_statement_enum: | |
176 | ret = hook_in_stub (info, &l->group_statement.children.head); | |
177 | if (ret) | |
178 | return ret; | |
179 | break; | |
180 | ||
181 | case lang_input_section_enum: | |
182 | if (l->input_section.section == info->input_section) | |
183 | { | |
184 | /* We've found our section. Insert the stub immediately | |
185 | before its associated input section. */ | |
186 | *lp = info->add.head; | |
187 | *(info->add.tail) = l; | |
b34976b6 | 188 | return TRUE; |
9c1d81c1 AM |
189 | } |
190 | break; | |
191 | ||
192 | case lang_data_statement_enum: | |
193 | case lang_reloc_statement_enum: | |
194 | case lang_object_symbols_statement_enum: | |
195 | case lang_output_statement_enum: | |
196 | case lang_target_statement_enum: | |
197 | case lang_input_statement_enum: | |
198 | case lang_assignment_statement_enum: | |
199 | case lang_padding_statement_enum: | |
200 | case lang_address_statement_enum: | |
201 | case lang_fill_statement_enum: | |
202 | break; | |
203 | ||
204 | default: | |
205 | FAIL (); | |
206 | break; | |
207 | } | |
208 | } | |
b34976b6 | 209 | return FALSE; |
9c1d81c1 AM |
210 | } |
211 | ||
212 | ||
213 | /* Call-back for ppc64_elf_size_stubs. */ | |
214 | ||
215 | /* Create a new stub section, and arrange for it to be linked | |
216 | immediately before INPUT_SECTION. */ | |
217 | ||
218 | static asection * | |
7d8a3a28 | 219 | ppc_add_stub_section (const char *stub_sec_name, asection *input_section) |
9c1d81c1 AM |
220 | { |
221 | asection *stub_sec; | |
222 | flagword flags; | |
223 | asection *output_section; | |
224 | const char *secname; | |
225 | lang_output_section_statement_type *os; | |
226 | struct hook_stub_info info; | |
227 | ||
228 | stub_sec = bfd_make_section_anyway (stub_file->the_bfd, stub_sec_name); | |
229 | if (stub_sec == NULL) | |
230 | goto err_ret; | |
231 | ||
232 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
233 | | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP); | |
234 | if (!bfd_set_section_flags (stub_file->the_bfd, stub_sec, flags)) | |
235 | goto err_ret; | |
236 | ||
237 | output_section = input_section->output_section; | |
238 | secname = bfd_get_section_name (output_section->owner, output_section); | |
239 | os = lang_output_section_find (secname); | |
240 | ||
241 | info.input_section = input_section; | |
242 | lang_list_init (&info.add); | |
243 | lang_add_section (&info.add, stub_sec, os, stub_file); | |
244 | ||
245 | if (info.add.head == NULL) | |
246 | goto err_ret; | |
247 | ||
68f8ff14 | 248 | stub_added = 1; |
9c1d81c1 AM |
249 | if (hook_in_stub (&info, &os->children.head)) |
250 | return stub_sec; | |
251 | ||
252 | err_ret: | |
253 | einfo ("%X%P: can not make stub section: %E\n"); | |
254 | return NULL; | |
255 | } | |
256 | ||
257 | ||
258 | /* Another call-back for ppc64_elf_size_stubs. */ | |
259 | ||
260 | static void | |
7d8a3a28 | 261 | ppc_layout_sections_again (void) |
9c1d81c1 AM |
262 | { |
263 | /* If we have changed sizes of the stub sections, then we need | |
264 | to recalculate all the section offsets. This may mean we need to | |
265 | add even more stubs. */ | |
266 | need_laying_out = 0; | |
267 | ||
268 | lang_reset_memory_regions (); | |
269 | ||
270 | /* Resize the sections. */ | |
271 | lang_size_sections (stat_ptr->head, abs_output_section, | |
7d8a3a28 | 272 | &stat_ptr->head, 0, 0, NULL, TRUE); |
9c1d81c1 AM |
273 | |
274 | /* Recalculate TOC base. */ | |
275 | ldemul_after_allocation (); | |
276 | ||
277 | /* Do the assignments again. */ | |
7d8a3a28 | 278 | lang_do_assignments (stat_ptr->head, abs_output_section, NULL, 0); |
9c1d81c1 AM |
279 | } |
280 | ||
1f808cd5 AM |
281 | |
282 | /* Call the back-end function to set TOC base after we have placed all | |
283 | the sections. */ | |
284 | static void | |
7d8a3a28 | 285 | gld${EMULATION_NAME}_after_allocation (void) |
1f808cd5 | 286 | { |
1049f94e | 287 | if (!link_info.relocatable) |
805fc799 | 288 | _bfd_set_gp_value (output_bfd, ppc64_elf_toc (output_bfd)); |
1f808cd5 AM |
289 | } |
290 | ||
9c1d81c1 | 291 | |
0b9a4d73 | 292 | static void |
7d8a3a28 | 293 | build_toc_list (lang_statement_union_type *statement) |
0b9a4d73 AM |
294 | { |
295 | if (statement->header.type == lang_input_section_enum | |
296 | && !statement->input_section.ifile->just_syms_flag | |
57ceae94 | 297 | && (statement->input_section.section->flags & SEC_EXCLUDE) == 0 |
0b9a4d73 | 298 | && statement->input_section.section->output_section == toc_section) |
7d8a3a28 | 299 | ppc64_elf_next_toc_section (&link_info, statement->input_section.section); |
0b9a4d73 AM |
300 | } |
301 | ||
302 | ||
9c1d81c1 | 303 | static void |
7d8a3a28 | 304 | build_section_lists (lang_statement_union_type *statement) |
9c1d81c1 AM |
305 | { |
306 | if (statement->header.type == lang_input_section_enum | |
805fc799 | 307 | && !statement->input_section.ifile->just_syms_flag |
57ceae94 | 308 | && (statement->input_section.section->flags & SEC_EXCLUDE) == 0 |
805fc799 AM |
309 | && statement->input_section.section->output_section != NULL |
310 | && statement->input_section.section->output_section->owner == output_bfd) | |
9c1d81c1 | 311 | { |
6bc8652b AM |
312 | if (!ppc64_elf_next_input_section (&link_info, |
313 | statement->input_section.section)) | |
314 | einfo ("%X%P: can not size stub section: %E\n"); | |
9c1d81c1 AM |
315 | } |
316 | } | |
317 | ||
fac1652d | 318 | |
9c1d81c1 | 319 | /* Final emulation specific call. */ |
1f808cd5 AM |
320 | |
321 | static void | |
7d8a3a28 | 322 | gld${EMULATION_NAME}_finish (void) |
1f808cd5 | 323 | { |
1e281515 AM |
324 | /* e_entry on PowerPC64 points to the function descriptor for |
325 | _start. If _start is missing, default to the first function | |
326 | descriptor in the .opd section. */ | |
327 | entry_section = ".opd"; | |
328 | ||
7a945db6 | 329 | /* bfd_elf_discard_info just plays with debugging sections, |
1f808cd5 AM |
330 | ie. doesn't affect any code, so we can delay resizing the |
331 | sections. It's likely we'll resize everything in the process of | |
9c1d81c1 | 332 | adding stubs. */ |
7a945db6 | 333 | if (bfd_elf_discard_info (output_bfd, &link_info)) |
1f808cd5 AM |
334 | need_laying_out = 1; |
335 | ||
836c6af1 AM |
336 | /* If generating a relocatable output file, then we don't have any |
337 | stubs. */ | |
1049f94e | 338 | if (stub_file != NULL && !link_info.relocatable) |
1f808cd5 | 339 | { |
836c6af1 AM |
340 | int ret = ppc64_elf_setup_section_lists (output_bfd, &link_info); |
341 | if (ret != 0) | |
9c1d81c1 | 342 | { |
836c6af1 AM |
343 | if (ret < 0) |
344 | { | |
345 | einfo ("%X%P: can not size stub section: %E\n"); | |
346 | return; | |
347 | } | |
9c1d81c1 | 348 | |
68f8ff14 | 349 | toc_section = bfd_get_section_by_name (output_bfd, ".got"); |
0b9a4d73 AM |
350 | if (toc_section != NULL) |
351 | lang_for_each_statement (build_toc_list); | |
352 | ||
353 | ppc64_elf_reinit_toc (output_bfd, &link_info); | |
354 | ||
836c6af1 | 355 | lang_for_each_statement (build_section_lists); |
9c1d81c1 | 356 | |
836c6af1 AM |
357 | /* Call into the BFD backend to do the real work. */ |
358 | if (!ppc64_elf_size_stubs (output_bfd, | |
836c6af1 AM |
359 | &link_info, |
360 | group_size, | |
361 | &ppc_add_stub_section, | |
362 | &ppc_layout_sections_again)) | |
363 | { | |
364 | einfo ("%X%P: can not size stub section: %E\n"); | |
365 | return; | |
366 | } | |
1f808cd5 | 367 | } |
9c1d81c1 | 368 | } |
1f808cd5 | 369 | |
9c1d81c1 AM |
370 | if (need_laying_out) |
371 | ppc_layout_sections_again (); | |
1f808cd5 | 372 | |
40e45c8b AM |
373 | if (link_info.relocatable) |
374 | { | |
375 | asection *toc = bfd_get_section_by_name (output_bfd, ".toc"); | |
376 | if (toc != NULL | |
377 | && bfd_section_size (output_bfd, toc) > 0x10000) | |
378 | einfo ("%X%P: TOC section size exceeds 64k\n"); | |
379 | } | |
380 | ||
68f8ff14 | 381 | if (stub_added) |
9c1d81c1 | 382 | { |
bda6c678 AM |
383 | char *msg = NULL; |
384 | char *line, *endline; | |
385 | ||
a23d8409 | 386 | emit_stub_syms |= link_info.emitrelocations; |
bda6c678 AM |
387 | if (!ppc64_elf_build_stubs (emit_stub_syms, &link_info, |
388 | config.stats ? &msg : NULL)) | |
9c1d81c1 | 389 | einfo ("%X%P: can not build stubs: %E\n"); |
bda6c678 AM |
390 | |
391 | for (line = msg; line != NULL; line = endline) | |
392 | { | |
393 | endline = strchr (line, '\n'); | |
394 | if (endline != NULL) | |
395 | *endline++ = '\0'; | |
396 | fprintf (stderr, "%s: %s\n", program_name, line); | |
397 | } | |
398 | if (msg != NULL) | |
399 | free (msg); | |
9c1d81c1 | 400 | } |
99877b66 AM |
401 | |
402 | ppc64_elf_restore_symbols (&link_info); | |
9c1d81c1 | 403 | } |
1f808cd5 | 404 | |
76dc39fe | 405 | |
fac1652d AM |
406 | /* Add a pattern matching ".foo" for every "foo" in a version script. |
407 | ||
408 | The reason for doing this is that many shared library version | |
409 | scripts export a selected set of functions or data symbols, forcing | |
410 | others local. eg. | |
411 | ||
412 | . VERS_1 { | |
413 | . global: | |
414 | . this; that; some; thing; | |
415 | . local: | |
416 | . *; | |
417 | . }; | |
418 | ||
419 | To make the above work for PowerPC64, we need to export ".this", | |
420 | ".that" and so on, otherwise only the function descriptor syms are | |
421 | exported. Lack of an exported function code sym may cause a | |
422 | definition to be pulled in from a static library. */ | |
423 | ||
7d8a3a28 AM |
424 | static struct bfd_elf_version_expr * |
425 | gld${EMULATION_NAME}_new_vers_pattern (struct bfd_elf_version_expr *entry) | |
fac1652d AM |
426 | { |
427 | struct bfd_elf_version_expr *dot_entry; | |
fac1652d AM |
428 | unsigned int len; |
429 | char *dot_pat; | |
430 | ||
108ba305 | 431 | if (!dotsyms || entry->pattern[0] == '*' || entry->pattern[0] == '.') |
fac1652d AM |
432 | return entry; |
433 | ||
7d8a3a28 | 434 | dot_entry = xmalloc (sizeof *dot_entry); |
108ba305 | 435 | *dot_entry = *entry; |
fac1652d AM |
436 | dot_entry->next = entry; |
437 | len = strlen (entry->pattern) + 2; | |
438 | dot_pat = xmalloc (len); | |
439 | dot_pat[0] = '.'; | |
440 | memcpy (dot_pat + 1, entry->pattern, len - 1); | |
441 | dot_entry->pattern = dot_pat; | |
c4e33880 AM |
442 | if (entry->symbol != NULL) |
443 | { | |
444 | len = strlen (entry->symbol) + 2; | |
445 | dot_pat = xmalloc (len); | |
446 | dot_pat[0] = '.'; | |
447 | memcpy (dot_pat + 1, entry->symbol, len - 1); | |
448 | dot_entry->symbol = dot_pat; | |
449 | } | |
fac1652d AM |
450 | return dot_entry; |
451 | } | |
452 | ||
453 | ||
9c1d81c1 AM |
454 | /* Avoid processing the fake stub_file in vercheck, stat_needed and |
455 | check_needed routines. */ | |
1f808cd5 | 456 | |
7d8a3a28 | 457 | static void (*real_func) (lang_input_statement_type *); |
1f808cd5 | 458 | |
7d8a3a28 | 459 | static void ppc_for_each_input_file_wrapper (lang_input_statement_type *l) |
9c1d81c1 AM |
460 | { |
461 | if (l != stub_file) | |
462 | (*real_func) (l); | |
1f808cd5 | 463 | } |
9c1d81c1 AM |
464 | |
465 | static void | |
7d8a3a28 | 466 | ppc_lang_for_each_input_file (void (*func) (lang_input_statement_type *)) |
9c1d81c1 AM |
467 | { |
468 | real_func = func; | |
469 | lang_for_each_input_file (&ppc_for_each_input_file_wrapper); | |
470 | } | |
471 | ||
472 | #define lang_for_each_input_file ppc_lang_for_each_input_file | |
473 | ||
1f808cd5 AM |
474 | EOF |
475 | ||
9c1d81c1 AM |
476 | # Define some shell vars to insert bits of code into the standard elf |
477 | # parse_args and list_options functions. | |
478 | # | |
479 | PARSE_AND_LIST_PROLOGUE=' | |
480 | #define OPTION_STUBGROUP_SIZE 301 | |
0b9a4d73 AM |
481 | #define OPTION_STUBSYMS (OPTION_STUBGROUP_SIZE + 1) |
482 | #define OPTION_DOTSYMS (OPTION_STUBSYMS + 1) | |
fac1652d | 483 | #define OPTION_NO_DOTSYMS (OPTION_DOTSYMS + 1) |
e5096e3f | 484 | #define OPTION_NO_TLS_OPT (OPTION_NO_DOTSYMS + 1) |
c5614fa4 AM |
485 | #define OPTION_NO_OPD_OPT (OPTION_NO_TLS_OPT + 1) |
486 | #define OPTION_NO_TOC_OPT (OPTION_NO_OPD_OPT + 1) | |
487 | #define OPTION_NON_OVERLAPPING_OPD (OPTION_NO_TOC_OPT + 1) | |
9c1d81c1 AM |
488 | ' |
489 | ||
9c1d81c1 AM |
490 | PARSE_AND_LIST_LONGOPTS=' |
491 | { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, | |
0b9a4d73 | 492 | { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS }, |
fac1652d AM |
493 | { "dotsyms", no_argument, NULL, OPTION_DOTSYMS }, |
494 | { "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS }, | |
e5096e3f | 495 | { "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT }, |
c5614fa4 AM |
496 | { "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT }, |
497 | { "no-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT }, | |
3f764659 | 498 | { "non-overlapping-opd", no_argument, NULL, OPTION_NON_OVERLAPPING_OPD }, |
9c1d81c1 AM |
499 | ' |
500 | ||
501 | PARSE_AND_LIST_OPTIONS=' | |
502 | fprintf (file, _("\ | |
503 | --stub-group-size=N Maximum size of a group of input sections that can be\n\ | |
504 | handled by one stub section. A negative value\n\ | |
505 | locates all stubs before their branches (with a\n\ | |
506 | group size of -N), while a positive value allows\n\ | |
507 | two groups of input sections, one before, and one\n\ | |
508 | after each stub section. Values of +/-1 indicate\n\ | |
509 | the linker should choose suitable defaults.\n" | |
510 | )); | |
fac1652d | 511 | fprintf (file, _("\ |
0b9a4d73 AM |
512 | --emit-stub-syms Label linker stubs with a symbol.\n" |
513 | )); | |
514 | fprintf (file, _("\ | |
fac1652d AM |
515 | --dotsyms For every version pattern \"foo\" in a version script,\n\ |
516 | add \".foo\" so that function code symbols are\n\ | |
517 | treated the same as function descriptor symbols.\n\ | |
518 | Defaults to on.\n" | |
519 | )); | |
520 | fprintf (file, _("\ | |
521 | --no-dotsyms Don'\''t do anything special in version scripts.\n" | |
522 | )); | |
e5096e3f AM |
523 | fprintf (file, _("\ |
524 | --no-tls-optimize Don'\''t try to optimize TLS accesses.\n" | |
525 | )); | |
3f764659 | 526 | fprintf (file, _("\ |
c5614fa4 AM |
527 | --no-opd-optimize Don'\''t optimize the OPD section.\n" |
528 | )); | |
529 | fprintf (file, _("\ | |
530 | --no-toc-optimize Don'\''t optimize the TOC section.\n" | |
531 | )); | |
532 | fprintf (file, _("\ | |
3f764659 JJ |
533 | --non-overlapping-opd Canonicalize .opd, so that there are no overlapping\n\ |
534 | .opd entries.\n" | |
535 | )); | |
9c1d81c1 AM |
536 | ' |
537 | ||
538 | PARSE_AND_LIST_ARGS_CASES=' | |
539 | case OPTION_STUBGROUP_SIZE: | |
540 | { | |
541 | const char *end; | |
542 | group_size = bfd_scan_vma (optarg, &end, 0); | |
543 | if (*end) | |
544 | einfo (_("%P%F: invalid number `%s'\''\n"), optarg); | |
545 | } | |
546 | break; | |
fac1652d | 547 | |
0b9a4d73 AM |
548 | case OPTION_STUBSYMS: |
549 | emit_stub_syms = 1; | |
550 | break; | |
551 | ||
fac1652d | 552 | case OPTION_DOTSYMS: |
e5096e3f | 553 | dotsyms = 1; |
fac1652d AM |
554 | break; |
555 | ||
556 | case OPTION_NO_DOTSYMS: | |
e5096e3f AM |
557 | dotsyms = 0; |
558 | break; | |
559 | ||
560 | case OPTION_NO_TLS_OPT: | |
c5614fa4 AM |
561 | no_tls_opt = 1; |
562 | break; | |
563 | ||
564 | case OPTION_NO_OPD_OPT: | |
565 | no_opd_opt = 1; | |
566 | break; | |
567 | ||
568 | case OPTION_NO_TOC_OPT: | |
569 | no_toc_opt = 1; | |
fac1652d | 570 | break; |
3f764659 JJ |
571 | |
572 | case OPTION_NON_OVERLAPPING_OPD: | |
573 | non_overlapping_opd = 1; | |
574 | break; | |
9c1d81c1 AM |
575 | ' |
576 | ||
1f808cd5 AM |
577 | # Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation |
578 | # | |
836c6af1 | 579 | LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation |
1f808cd5 AM |
580 | LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
581 | LDEMUL_FINISH=gld${EMULATION_NAME}_finish | |
9c1d81c1 | 582 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements |
fac1652d | 583 | LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern |