Commit | Line | Data |
---|---|---|
252b5132 | 1 | # This shell script emits a C file. -*- C -*- |
82704155 | 2 | # Copyright (C) 1991-2019 Free Software Foundation, Inc. |
41392f03 | 3 | # |
f96b4a7b | 4 | # This file is part of the GNU Binutils. |
41392f03 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 |
41392f03 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. | |
41392f03 AM |
20 | # |
21 | ||
22 | # This file is sourced from elf32.em, and defines extra arm-elf | |
23 | # specific routines. | |
24 | # | |
a82644e2 | 25 | test -z "$TARGET2_TYPE" && TARGET2_TYPE="rel" |
92b93329 | 26 | fragment <<EOF |
7ca69e9e | 27 | |
906e58ca | 28 | #include "ldctor.h" |
1d022697 PB |
29 | #include "elf/arm.h" |
30 | ||
68c39892 TP |
31 | static struct elf32_arm_params params = |
32 | { | |
33 | NULL, /* thumb_entry_symbol */ | |
34 | 0, /* byteswap_code */ | |
35 | 0${TARGET1_IS_REL}, /* target1_is_rel */ | |
36 | "${TARGET2_TYPE}", /* target2_type */ | |
37 | 0, /* fix_v4bx */ | |
38 | 0, /* use_blx */ | |
39 | BFD_ARM_VFP11_FIX_DEFAULT, /* vfp11_denorm_fix */ | |
40 | BFD_ARM_STM32L4XX_FIX_NONE, /* stm32l4xx_fix */ | |
41 | 0, /* no_enum_size_warning */ | |
42 | 0, /* no_wchar_size_warning */ | |
43 | 0, /* pic_veneer */ | |
44 | -1, /* fix_cortex_a8 */ | |
45 | 1, /* fix_arm1176 */ | |
46 | -1, /* merge_exidx_entries */ | |
47 | 0, /* cmse_implib */ | |
48 | NULL /* in_implib_bfd */ | |
49 | }; | |
0955507f | 50 | static char *in_implib_filename = NULL; |
7ca69e9e | 51 | |
252b5132 | 52 | static void |
0c7a8e5a | 53 | gld${EMULATION_NAME}_before_parse (void) |
252b5132 RH |
54 | { |
55 | #ifndef TARGET_ /* I.e., if not generic. */ | |
5e2f1575 | 56 | ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown); |
252b5132 | 57 | #endif /* not TARGET_ */ |
66be1055 | 58 | input_flags.dynamic = ${DYNAMIC_LINK-TRUE}; |
b34976b6 | 59 | config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`; |
e2caaa1f | 60 | config.separate_code = `if test "x${SEPARATE_CODE}" = xyes ; then echo TRUE ; else echo FALSE ; fi`; |
5c3261b0 | 61 | link_info.check_relocs_after_open_input = TRUE; |
576438f0 | 62 | link_info.relro = DEFAULT_LD_Z_RELRO; |
252b5132 RH |
63 | } |
64 | ||
3940d2c3 NC |
65 | static void |
66 | gld${EMULATION_NAME}_set_symbols (void) | |
67 | { | |
68 | /* PR 19106: The section resizing code in gldarmelf_after_allocation | |
69 | is effectively the same as relaxation, so prevent early memory | |
70 | region checks which produce bogus error messages. | |
71 | Note - this test has nothing to do with symbols. It is just here | |
72 | because this is the first emulation routine that is called after | |
73 | the command line has been parsed. */ | |
74 | if (!bfd_link_relocatable (&link_info)) | |
75 | TARGET_ENABLE_RELAXATION; | |
76 | } | |
77 | ||
1220a729 | 78 | static void |
0c7a8e5a | 79 | arm_elf_before_allocation (void) |
1220a729 | 80 | { |
68c39892 | 81 | bfd_elf32_arm_set_byteswap_code (&link_info, params.byteswap_code); |
d504ffc8 | 82 | |
c6dd86c6 JB |
83 | /* Choose type of VFP11 erratum fix, or warn if specified fix is unnecessary |
84 | due to architecture version. */ | |
f13a99db | 85 | bfd_elf32_arm_set_vfp11_fix (link_info.output_bfd, &link_info); |
c6dd86c6 | 86 | |
a504d23a LA |
87 | /* Choose type of STM32L4XX erratum fix, or warn if specified fix is |
88 | unnecessary due to architecture version. */ | |
89 | bfd_elf32_arm_set_stm32l4xx_fix (link_info.output_bfd, &link_info); | |
90 | ||
48229727 JB |
91 | /* Auto-select Cortex-A8 erratum fix if it wasn't explicitly specified. */ |
92 | bfd_elf32_arm_set_cortex_a8_fix (link_info.output_bfd, &link_info); | |
93 | ||
daa4adae TP |
94 | /* Ensure the output sections of veneers needing a dedicated one is not |
95 | removed. */ | |
96 | bfd_elf32_arm_keep_private_stub_output_sections (&link_info); | |
97 | ||
d504ffc8 DJ |
98 | /* We should be able to set the size of the interworking stub section. We |
99 | can't do it until later if we have dynamic sections, though. */ | |
cbc704f3 | 100 | if (elf_hash_table (&link_info)->dynobj == NULL) |
d504ffc8 DJ |
101 | { |
102 | /* Here we rummage through the found bfds to collect glue information. */ | |
103 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
104 | { | |
6c19b93b AM |
105 | /* Initialise mapping tables for code/data. */ |
106 | bfd_elf32_arm_init_maps (is->the_bfd); | |
c6dd86c6 | 107 | |
d504ffc8 | 108 | if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, |
c6dd86c6 | 109 | &link_info) |
a504d23a LA |
110 | || !bfd_elf32_arm_vfp11_erratum_scan (is->the_bfd, &link_info) |
111 | || !bfd_elf32_arm_stm32l4xx_erratum_scan (is->the_bfd, | |
112 | &link_info)) | |
252b5132 | 113 | /* xgettext:c-format */ |
df5f2391 AM |
114 | einfo (_("%P: errors encountered processing file %s\n"), |
115 | is->filename); | |
d504ffc8 | 116 | } |
3e6b1042 DJ |
117 | |
118 | /* We have seen it all. Allocate it, and carry on. */ | |
119 | bfd_elf32_arm_allocate_interworking_sections (& link_info); | |
d504ffc8 | 120 | } |
252b5132 | 121 | |
063d4ee1 AM |
122 | /* Call the standard elf routine. */ |
123 | gld${EMULATION_NAME}_before_allocation (); | |
252b5132 RH |
124 | } |
125 | ||
906e58ca NC |
126 | /* Fake input file for stubs. */ |
127 | static lang_input_statement_type *stub_file; | |
128 | ||
129 | /* Whether we need to call gldarm_layout_sections_again. */ | |
130 | static int need_laying_out = 0; | |
131 | ||
132 | /* Maximum size of a group of input sections that can be handled by | |
133 | one stub section. A value of +/-1 indicates the bfd back-end | |
134 | should use a suitable default size. */ | |
135 | static bfd_signed_vma group_size = 1; | |
136 | ||
137 | struct hook_stub_info | |
138 | { | |
139 | lang_statement_list_type add; | |
140 | asection *input_section; | |
141 | }; | |
142 | ||
143 | /* Traverse the linker tree to find the spot where the stub goes. */ | |
144 | ||
145 | static bfd_boolean | |
146 | hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) | |
147 | { | |
148 | lang_statement_union_type *l; | |
149 | bfd_boolean ret; | |
150 | ||
151 | for (; (l = *lp) != NULL; lp = &l->header.next) | |
152 | { | |
153 | switch (l->header.type) | |
154 | { | |
155 | case lang_constructors_statement_enum: | |
156 | ret = hook_in_stub (info, &constructor_list.head); | |
157 | if (ret) | |
158 | return ret; | |
159 | break; | |
160 | ||
161 | case lang_output_section_statement_enum: | |
162 | ret = hook_in_stub (info, | |
163 | &l->output_section_statement.children.head); | |
164 | if (ret) | |
165 | return ret; | |
166 | break; | |
167 | ||
168 | case lang_wild_statement_enum: | |
169 | ret = hook_in_stub (info, &l->wild_statement.children.head); | |
170 | if (ret) | |
171 | return ret; | |
172 | break; | |
173 | ||
174 | case lang_group_statement_enum: | |
175 | ret = hook_in_stub (info, &l->group_statement.children.head); | |
176 | if (ret) | |
177 | return ret; | |
178 | break; | |
179 | ||
180 | case lang_input_section_enum: | |
181 | if (l->input_section.section == info->input_section) | |
182 | { | |
183 | /* We've found our section. Insert the stub immediately | |
07d72278 DJ |
184 | after its associated input section. */ |
185 | *(info->add.tail) = l->header.next; | |
186 | l->header.next = info->add.head; | |
906e58ca NC |
187 | return TRUE; |
188 | } | |
189 | break; | |
190 | ||
191 | case lang_data_statement_enum: | |
192 | case lang_reloc_statement_enum: | |
193 | case lang_object_symbols_statement_enum: | |
194 | case lang_output_statement_enum: | |
195 | case lang_target_statement_enum: | |
196 | case lang_input_statement_enum: | |
197 | case lang_assignment_statement_enum: | |
198 | case lang_padding_statement_enum: | |
199 | case lang_address_statement_enum: | |
200 | case lang_fill_statement_enum: | |
201 | break; | |
202 | ||
203 | default: | |
204 | FAIL (); | |
205 | break; | |
206 | } | |
207 | } | |
208 | return FALSE; | |
209 | } | |
210 | ||
211 | ||
212 | /* Call-back for elf32_arm_size_stubs. */ | |
213 | ||
214 | /* Create a new stub section, and arrange for it to be linked | |
07d72278 | 215 | immediately after INPUT_SECTION. */ |
906e58ca NC |
216 | |
217 | static asection * | |
7a89b94e | 218 | elf32_arm_add_stub_section (const char * stub_sec_name, |
6bde4c52 TP |
219 | asection * output_section, |
220 | asection * after_input_section, | |
7a89b94e | 221 | unsigned int alignment_power) |
906e58ca NC |
222 | { |
223 | asection *stub_sec; | |
224 | flagword flags; | |
906e58ca NC |
225 | lang_output_section_statement_type *os; |
226 | struct hook_stub_info info; | |
227 | ||
906e58ca NC |
228 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
229 | | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP); | |
9795b468 AM |
230 | stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd, |
231 | stub_sec_name, flags); | |
232 | if (stub_sec == NULL) | |
906e58ca NC |
233 | goto err_ret; |
234 | ||
7a89b94e | 235 | bfd_set_section_alignment (stub_file->the_bfd, stub_sec, alignment_power); |
906e58ca | 236 | |
24ef1aa7 | 237 | os = lang_output_section_get (output_section); |
906e58ca | 238 | |
6bde4c52 | 239 | info.input_section = after_input_section; |
906e58ca | 240 | lang_list_init (&info.add); |
b9c361e0 | 241 | lang_add_section (&info.add, stub_sec, NULL, os); |
906e58ca NC |
242 | |
243 | if (info.add.head == NULL) | |
244 | goto err_ret; | |
245 | ||
6bde4c52 TP |
246 | if (after_input_section == NULL) |
247 | { | |
248 | lang_statement_union_type **lp = &os->children.head; | |
249 | lang_statement_union_type *l, *lprev = NULL; | |
250 | ||
251 | for (; (l = *lp) != NULL; lp = &l->header.next, lprev = l); | |
252 | ||
253 | if (lprev) | |
254 | lprev->header.next = info.add.head; | |
255 | else | |
256 | os->children.head = info.add.head; | |
257 | ||
258 | return stub_sec; | |
259 | } | |
260 | else | |
261 | { | |
262 | if (hook_in_stub (&info, &os->children.head)) | |
263 | return stub_sec; | |
264 | } | |
906e58ca NC |
265 | |
266 | err_ret: | |
d003af55 | 267 | einfo (_("%X%P: can not make stub section: %E\n")); |
906e58ca NC |
268 | return NULL; |
269 | } | |
270 | ||
271 | /* Another call-back for elf_arm_size_stubs. */ | |
272 | ||
6f798e5c | 273 | static void |
906e58ca NC |
274 | gldarm_layout_sections_again (void) |
275 | { | |
276 | /* If we have changed sizes of the stub sections, then we need | |
277 | to recalculate all the section offsets. This may mean we need to | |
278 | add even more stubs. */ | |
279 | gld${EMULATION_NAME}_map_segments (TRUE); | |
280 | need_laying_out = -1; | |
281 | } | |
282 | ||
283 | static void | |
284 | build_section_lists (lang_statement_union_type *statement) | |
285 | { | |
286 | if (statement->header.type == lang_input_section_enum) | |
287 | { | |
288 | asection *i = statement->input_section.section; | |
289 | ||
dbaa2011 | 290 | if (i->sec_info_type != SEC_INFO_TYPE_JUST_SYMS |
906e58ca NC |
291 | && (i->flags & SEC_EXCLUDE) == 0 |
292 | && i->output_section != NULL | |
293 | && i->output_section->owner == link_info.output_bfd) | |
294 | elf32_arm_next_input_section (& link_info, i); | |
295 | } | |
296 | } | |
297 | ||
2468f9c9 PB |
298 | static int |
299 | compare_output_sec_vma (const void *a, const void *b) | |
300 | { | |
301 | asection *asec = *(asection **) a, *bsec = *(asection **) b; | |
302 | asection *aout = asec->output_section, *bout = bsec->output_section; | |
303 | bfd_vma avma, bvma; | |
e2caaa1f | 304 | |
2468f9c9 PB |
305 | /* If there's no output section for some reason, compare equal. */ |
306 | if (!aout || !bout) | |
307 | return 0; | |
e2caaa1f | 308 | |
2468f9c9 PB |
309 | avma = aout->vma + asec->output_offset; |
310 | bvma = bout->vma + bsec->output_offset; | |
e2caaa1f | 311 | |
2468f9c9 PB |
312 | if (avma > bvma) |
313 | return 1; | |
314 | else if (avma < bvma) | |
315 | return -1; | |
e2caaa1f | 316 | |
2468f9c9 PB |
317 | return 0; |
318 | } | |
319 | ||
906e58ca | 320 | static void |
eaeb0a9d | 321 | gld${EMULATION_NAME}_after_allocation (void) |
6f798e5c | 322 | { |
75938853 AM |
323 | int ret; |
324 | ||
491d01d3 YU |
325 | /* Build a sorted list of input text sections, then use that to process |
326 | the unwind table index. */ | |
327 | unsigned int list_size = 10; | |
328 | asection **sec_list = (asection **) | |
329 | xmalloc (list_size * sizeof (asection *)); | |
330 | unsigned int sec_count = 0; | |
331 | ||
332 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
2468f9c9 | 333 | { |
491d01d3 YU |
334 | bfd *abfd = is->the_bfd; |
335 | asection *sec; | |
e2caaa1f | 336 | |
491d01d3 YU |
337 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
338 | continue; | |
e2caaa1f | 339 | |
491d01d3 YU |
340 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
341 | { | |
342 | asection *out_sec = sec->output_section; | |
343 | ||
344 | if (out_sec | |
345 | && elf_section_data (sec) | |
346 | && elf_section_type (sec) == SHT_PROGBITS | |
347 | && (elf_section_flags (sec) & SHF_EXECINSTR) != 0 | |
348 | && (sec->flags & SEC_EXCLUDE) == 0 | |
349 | && sec->sec_info_type != SEC_INFO_TYPE_JUST_SYMS | |
350 | && out_sec != bfd_abs_section_ptr) | |
2468f9c9 | 351 | { |
491d01d3 | 352 | if (sec_count == list_size) |
2468f9c9 | 353 | { |
491d01d3 YU |
354 | list_size *= 2; |
355 | sec_list = (asection **) | |
356 | xrealloc (sec_list, list_size * sizeof (asection *)); | |
2468f9c9 | 357 | } |
491d01d3 YU |
358 | |
359 | sec_list[sec_count++] = sec; | |
2468f9c9 PB |
360 | } |
361 | } | |
491d01d3 | 362 | } |
e2caaa1f | 363 | |
491d01d3 | 364 | qsort (sec_list, sec_count, sizeof (asection *), &compare_output_sec_vma); |
e2caaa1f | 365 | |
491d01d3 | 366 | if (elf32_arm_fix_exidx_coverage (sec_list, sec_count, &link_info, |
68c39892 | 367 | params.merge_exidx_entries)) |
491d01d3 | 368 | need_laying_out = 1; |
e2caaa1f | 369 | |
491d01d3 | 370 | free (sec_list); |
6f798e5c | 371 | |
906e58ca NC |
372 | /* bfd_elf32_discard_info just plays with debugging sections, |
373 | ie. doesn't affect any code, so we can delay resizing the | |
374 | sections. It's likely we'll resize everything in the process of | |
375 | adding stubs. */ | |
75938853 AM |
376 | ret = bfd_elf_discard_info (link_info.output_bfd, & link_info); |
377 | if (ret < 0) | |
378 | { | |
d003af55 | 379 | einfo (_("%X%P: .eh_frame/.stab edit: %E\n")); |
75938853 AM |
380 | return; |
381 | } | |
382 | else if (ret > 0) | |
906e58ca NC |
383 | need_laying_out = 1; |
384 | ||
385 | /* If generating a relocatable output file, then we don't | |
386 | have to examine the relocs. */ | |
0e1862bb | 387 | if (stub_file != NULL && !bfd_link_relocatable (&link_info)) |
906e58ca | 388 | { |
75938853 | 389 | ret = elf32_arm_setup_section_lists (link_info.output_bfd, &link_info); |
906e58ca NC |
390 | if (ret != 0) |
391 | { | |
392 | if (ret < 0) | |
393 | { | |
d003af55 AM |
394 | einfo (_("%X%P: could not compute sections lists " |
395 | "for stub generation: %E\n")); | |
906e58ca NC |
396 | return; |
397 | } | |
398 | ||
399 | lang_for_each_statement (build_section_lists); | |
400 | ||
401 | /* Call into the BFD backend to do the real work. */ | |
402 | if (! elf32_arm_size_stubs (link_info.output_bfd, | |
403 | stub_file->the_bfd, | |
404 | & link_info, | |
405 | group_size, | |
406 | & elf32_arm_add_stub_section, | |
407 | & gldarm_layout_sections_again)) | |
408 | { | |
df5f2391 | 409 | einfo (_("%X%P: can not size stub section: %E\n")); |
906e58ca NC |
410 | return; |
411 | } | |
412 | } | |
413 | } | |
414 | ||
415 | if (need_laying_out != -1) | |
416 | gld${EMULATION_NAME}_map_segments (need_laying_out); | |
eaeb0a9d AM |
417 | } |
418 | ||
419 | static void | |
420 | gld${EMULATION_NAME}_finish (void) | |
421 | { | |
422 | struct bfd_link_hash_entry * h; | |
423 | ||
424 | { | |
425 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
426 | { | |
6c19b93b AM |
427 | /* Figure out where VFP11 erratum veneers (and the labels returning |
428 | from same) have been placed. */ | |
429 | bfd_elf32_arm_vfp11_fix_veneer_locations (is->the_bfd, &link_info); | |
a504d23a LA |
430 | |
431 | /* Figure out where STM32L4XX erratum veneers (and the labels returning | |
432 | from them) have been placed. */ | |
433 | bfd_elf32_arm_stm32l4xx_fix_veneer_locations (is->the_bfd, &link_info); | |
eaeb0a9d AM |
434 | } |
435 | } | |
906e58ca | 436 | |
0e1862bb | 437 | if (!bfd_link_relocatable (&link_info)) |
906e58ca NC |
438 | { |
439 | /* Now build the linker stubs. */ | |
440 | if (stub_file->the_bfd->sections != NULL) | |
441 | { | |
442 | if (! elf32_arm_build_stubs (& link_info)) | |
d003af55 | 443 | einfo (_("%X%P: can not build stubs: %E\n")); |
906e58ca NC |
444 | } |
445 | } | |
446 | ||
447 | finish_default (); | |
c56feb2b | 448 | |
68c39892 | 449 | if (params.thumb_entry_symbol) |
1d022697 | 450 | { |
68c39892 | 451 | h = bfd_link_hash_lookup (link_info.hash, params.thumb_entry_symbol, |
1d022697 PB |
452 | FALSE, FALSE, TRUE); |
453 | } | |
454 | else | |
455 | { | |
456 | struct elf_link_hash_entry * eh; | |
457 | ||
458 | if (!entry_symbol.name) | |
459 | return; | |
460 | ||
461 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name, | |
462 | FALSE, FALSE, TRUE); | |
463 | eh = (struct elf_link_hash_entry *)h; | |
39d911fc TP |
464 | if (!h || ARM_GET_SYM_BRANCH_TYPE (eh->target_internal) |
465 | != ST_BRANCH_TO_THUMB) | |
1d022697 PB |
466 | return; |
467 | } | |
0c7a8e5a | 468 | |
6f798e5c NC |
469 | |
470 | if (h != (struct bfd_link_hash_entry *) NULL | |
471 | && (h->type == bfd_link_hash_defined | |
472 | || h->type == bfd_link_hash_defweak) | |
473 | && h->u.def.section->output_section != NULL) | |
474 | { | |
475 | static char buffer[32]; | |
88f7bcd5 | 476 | bfd_vma val; |
0c7a8e5a | 477 | |
88f7bcd5 NC |
478 | /* Special procesing is required for a Thumb entry symbol. The |
479 | bottom bit of its address must be set. */ | |
480 | val = (h->u.def.value | |
f13a99db | 481 | + bfd_get_section_vma (link_info.output_bfd, |
88f7bcd5 NC |
482 | h->u.def.section->output_section) |
483 | + h->u.def.section->output_offset); | |
0c7a8e5a | 484 | |
88f7bcd5 | 485 | val |= 1; |
6f798e5c | 486 | |
88f7bcd5 | 487 | /* Now convert this value into a string and store it in entry_symbol |
0c7a8e5a | 488 | where the lang_finish() function will pick it up. */ |
88f7bcd5 NC |
489 | buffer[0] = '0'; |
490 | buffer[1] = 'x'; | |
0c7a8e5a | 491 | |
88f7bcd5 | 492 | sprintf_vma (buffer + 2, val); |
6f798e5c | 493 | |
68c39892 | 494 | if (params.thumb_entry_symbol != NULL && entry_symbol.name != NULL |
1d022697 | 495 | && entry_from_cmdline) |
88f7bcd5 | 496 | einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), |
68c39892 | 497 | params.thumb_entry_symbol, entry_symbol.name); |
88f7bcd5 | 498 | entry_symbol.name = buffer; |
6f798e5c | 499 | } |
88f7bcd5 | 500 | else |
6241fe3d | 501 | einfo (_("%P: warning: cannot find thumb start symbol %s\n"), |
f5a1cdde | 502 | h->root.string); |
6f798e5c NC |
503 | } |
504 | ||
bf21ed78 | 505 | /* This is a convenient point to tell BFD about target specific flags. |
3674e28a PB |
506 | After the output has been created, but before inputs are read. */ |
507 | static void | |
508 | arm_elf_create_output_section_statements (void) | |
509 | { | |
b8976b05 NC |
510 | if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL) |
511 | { | |
512 | /* The arm backend needs special fields in the output hash structure. | |
513 | These will only be created if the output format is an arm format, | |
514 | hence we do not support linking and changing output formats at the | |
515 | same time. Use a link followed by objcopy to change output formats. */ | |
df5f2391 AM |
516 | einfo (_("%F%P: error: cannot change output format " |
517 | "whilst linking %s binaries\n"), "ARM"); | |
b8976b05 NC |
518 | return; |
519 | } | |
520 | ||
0955507f TP |
521 | if (in_implib_filename) |
522 | { | |
68c39892 TP |
523 | params.in_implib_bfd = bfd_openr (in_implib_filename, |
524 | bfd_get_target (link_info.output_bfd)); | |
0955507f | 525 | |
68c39892 | 526 | if (params.in_implib_bfd == NULL) |
df5f2391 | 527 | einfo (_("%F%P: %s: can't open: %E\n"), in_implib_filename); |
0955507f | 528 | |
68c39892 | 529 | if (!bfd_check_format (params.in_implib_bfd, bfd_object)) |
df5f2391 | 530 | einfo (_("%F%P: %s: not a relocatable file: %E\n"), in_implib_filename); |
0955507f | 531 | } |
0955507f | 532 | |
68c39892 | 533 | bfd_elf32_arm_set_target_params (link_info.output_bfd, &link_info, ¶ms); |
906e58ca NC |
534 | |
535 | stub_file = lang_add_input_file ("linker stubs", | |
6c19b93b AM |
536 | lang_input_file_is_fake_enum, |
537 | NULL); | |
906e58ca NC |
538 | stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd); |
539 | if (stub_file->the_bfd == NULL | |
540 | || ! bfd_set_arch_mach (stub_file->the_bfd, | |
6c19b93b AM |
541 | bfd_get_arch (link_info.output_bfd), |
542 | bfd_get_mach (link_info.output_bfd))) | |
906e58ca | 543 | { |
df5f2391 | 544 | einfo (_("%F%P: can not create BFD: %E\n")); |
906e58ca NC |
545 | return; |
546 | } | |
e2caaa1f | 547 | |
906e58ca NC |
548 | stub_file->the_bfd->flags |= BFD_LINKER_CREATED; |
549 | ldlang_add_file (stub_file); | |
3e6b1042 DJ |
550 | |
551 | /* Also use the stub file for stubs placed in a single output section. */ | |
552 | bfd_elf32_arm_add_glue_sections_to_bfd (stub_file->the_bfd, &link_info); | |
553 | bfd_elf32_arm_get_bfd_for_interworking (stub_file->the_bfd, &link_info); | |
906e58ca NC |
554 | } |
555 | ||
556 | /* Avoid processing the fake stub_file in vercheck, stat_needed and | |
557 | check_needed routines. */ | |
558 | ||
559 | static void (*real_func) (lang_input_statement_type *); | |
560 | ||
561 | static void arm_for_each_input_file_wrapper (lang_input_statement_type *l) | |
562 | { | |
563 | if (l != stub_file) | |
564 | (*real_func) (l); | |
3674e28a PB |
565 | } |
566 | ||
906e58ca NC |
567 | static void |
568 | arm_lang_for_each_input_file (void (*func) (lang_input_statement_type *)) | |
569 | { | |
570 | real_func = func; | |
571 | lang_for_each_input_file (&arm_for_each_input_file_wrapper); | |
572 | } | |
573 | ||
574 | #define lang_for_each_input_file arm_lang_for_each_input_file | |
575 | ||
252b5132 RH |
576 | EOF |
577 | ||
41392f03 AM |
578 | # Define some shell vars to insert bits of code into the standard elf |
579 | # parse_args and list_options functions. | |
580 | # | |
581 | PARSE_AND_LIST_PROLOGUE=' | |
582 | #define OPTION_THUMB_ENTRY 301 | |
e489d0ae | 583 | #define OPTION_BE8 302 |
9c504268 PB |
584 | #define OPTION_TARGET1_REL 303 |
585 | #define OPTION_TARGET1_ABS 304 | |
3674e28a | 586 | #define OPTION_TARGET2 305 |
33bfe774 JB |
587 | #define OPTION_FIX_V4BX 306 |
588 | #define OPTION_USE_BLX 307 | |
c6dd86c6 | 589 | #define OPTION_VFP11_DENORM_FIX 308 |
bf21ed78 | 590 | #define OPTION_NO_ENUM_SIZE_WARNING 309 |
27e55c4d | 591 | #define OPTION_PIC_VENEER 310 |
845b51d6 | 592 | #define OPTION_FIX_V4BX_INTERWORKING 311 |
8c45e5ec | 593 | #define OPTION_STUBGROUP_SIZE 312 |
a9dc9481 | 594 | #define OPTION_NO_WCHAR_SIZE_WARNING 313 |
48229727 JB |
595 | #define OPTION_FIX_CORTEX_A8 314 |
596 | #define OPTION_NO_FIX_CORTEX_A8 315 | |
8c45e5ec | 597 | #define OPTION_NO_MERGE_EXIDX_ENTRIES 316 |
2de70689 MGD |
598 | #define OPTION_FIX_ARM1176 317 |
599 | #define OPTION_NO_FIX_ARM1176 318 | |
8c45e5ec | 600 | #define OPTION_LONG_PLT 319 |
a504d23a | 601 | #define OPTION_STM32L4XX_FIX 320 |
54ddd295 | 602 | #define OPTION_CMSE_IMPLIB 321 |
0955507f | 603 | #define OPTION_IN_IMPLIB 322 |
41392f03 | 604 | ' |
252b5132 | 605 | |
ef5bdbd1 | 606 | PARSE_AND_LIST_SHORTOPTS=p |
252b5132 | 607 | |
41392f03 AM |
608 | PARSE_AND_LIST_LONGOPTS=' |
609 | { "no-pipeline-knowledge", no_argument, NULL, '\'p\''}, | |
610 | { "thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, | |
e489d0ae | 611 | { "be8", no_argument, NULL, OPTION_BE8}, |
9c504268 PB |
612 | { "target1-rel", no_argument, NULL, OPTION_TARGET1_REL}, |
613 | { "target1-abs", no_argument, NULL, OPTION_TARGET1_ABS}, | |
3674e28a | 614 | { "target2", required_argument, NULL, OPTION_TARGET2}, |
319850b4 | 615 | { "fix-v4bx", no_argument, NULL, OPTION_FIX_V4BX}, |
845b51d6 | 616 | { "fix-v4bx-interworking", no_argument, NULL, OPTION_FIX_V4BX_INTERWORKING}, |
33bfe774 | 617 | { "use-blx", no_argument, NULL, OPTION_USE_BLX}, |
c6dd86c6 | 618 | { "vfp11-denorm-fix", required_argument, NULL, OPTION_VFP11_DENORM_FIX}, |
a504d23a | 619 | { "fix-stm32l4xx-629360", optional_argument, NULL, OPTION_STM32L4XX_FIX}, |
bf21ed78 | 620 | { "no-enum-size-warning", no_argument, NULL, OPTION_NO_ENUM_SIZE_WARNING}, |
27e55c4d | 621 | { "pic-veneer", no_argument, NULL, OPTION_PIC_VENEER}, |
906e58ca | 622 | { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, |
a9dc9481 | 623 | { "no-wchar-size-warning", no_argument, NULL, OPTION_NO_WCHAR_SIZE_WARNING}, |
48229727 JB |
624 | { "fix-cortex-a8", no_argument, NULL, OPTION_FIX_CORTEX_A8 }, |
625 | { "no-fix-cortex-a8", no_argument, NULL, OPTION_NO_FIX_CORTEX_A8 }, | |
85fdf906 | 626 | { "no-merge-exidx-entries", no_argument, NULL, OPTION_NO_MERGE_EXIDX_ENTRIES }, |
2de70689 MGD |
627 | { "fix-arm1176", no_argument, NULL, OPTION_FIX_ARM1176 }, |
628 | { "no-fix-arm1176", no_argument, NULL, OPTION_NO_FIX_ARM1176 }, | |
1db37fe6 | 629 | { "long-plt", no_argument, NULL, OPTION_LONG_PLT }, |
54ddd295 | 630 | { "cmse-implib", no_argument, NULL, OPTION_CMSE_IMPLIB }, |
0955507f | 631 | { "in-implib", required_argument, NULL, OPTION_IN_IMPLIB }, |
41392f03 | 632 | ' |
252b5132 | 633 | |
41392f03 | 634 | PARSE_AND_LIST_OPTIONS=' |
442996ee | 635 | fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n")); |
4a977a31 | 636 | fprintf (file, _(" --be8 Output BE8 format image\n")); |
f8266dc4 NC |
637 | fprintf (file, _(" --target1-rel Interpret R_ARM_TARGET1 as R_ARM_REL32\n")); |
638 | fprintf (file, _(" --target1-abs Interpret R_ARM_TARGET1 as R_ARM_ABS32\n")); | |
442996ee AM |
639 | fprintf (file, _(" --target2=<type> Specify definition of R_ARM_TARGET2\n")); |
640 | fprintf (file, _(" --fix-v4bx Rewrite BX rn as MOV pc, rn for ARMv4\n")); | |
845b51d6 | 641 | fprintf (file, _(" --fix-v4bx-interworking Rewrite BX rn branch to ARMv4 interworking veneer\n")); |
442996ee AM |
642 | fprintf (file, _(" --use-blx Enable use of BLX instructions\n")); |
643 | fprintf (file, _(" --vfp11-denorm-fix Specify how to fix VFP11 denorm erratum\n")); | |
a504d23a | 644 | fprintf (file, _(" --fix-stm32l4xx-629360 Specify how to fix STM32L4XX 629360 erratum\n")); |
893dcb0e | 645 | fprintf (file, _(" --no-enum-size-warning Don'\''t warn about objects with incompatible\n" |
442996ee | 646 | " enum sizes\n")); |
a272e28c | 647 | fprintf (file, _(" --no-wchar-size-warning Don'\''t warn about objects with incompatible\n" |
a9dc9481 | 648 | " wchar_t sizes\n")); |
442996ee | 649 | fprintf (file, _(" --pic-veneer Always generate PIC interworking veneers\n")); |
1db37fe6 YG |
650 | fprintf (file, _(" --long-plt Generate long .plt entries\n" |
651 | " to handle large .plt/.got displacements\n")); | |
54ddd295 TP |
652 | fprintf (file, _(" --cmse-implib Make import library to be a secure gateway import\n" |
653 | " library as per ARMv8-M Security Extensions\n")); | |
0955507f TP |
654 | fprintf (file, _(" --in-implib Import library whose symbols address must\n" |
655 | " remain stable\n")); | |
906e58ca | 656 | fprintf (file, _("\ |
a272e28c | 657 | --stub-group-size=N Maximum size of a group of input sections that\n\ |
df5f2391 AM |
658 | can be handled by one stub section. A negative\n\ |
659 | value locates all stubs after their branches\n\ | |
660 | (with a group size of -N), while a positive\n\ | |
661 | value allows two groups of input sections, one\n\ | |
662 | before, and one after each stub section.\n\ | |
663 | Values of +/-1 indicate the linker should\n\ | |
664 | choose suitable defaults.\n")); | |
48229727 | 665 | fprintf (file, _(" --[no-]fix-cortex-a8 Disable/enable Cortex-A8 Thumb-2 branch erratum fix\n")); |
85fdf906 | 666 | fprintf (file, _(" --no-merge-exidx-entries Disable merging exidx entries\n")); |
2de70689 | 667 | fprintf (file, _(" --[no-]fix-arm1176 Disable/enable ARM1176 BLX immediate erratum fix\n")); |
41392f03 | 668 | ' |
252b5132 | 669 | |
41392f03 AM |
670 | PARSE_AND_LIST_ARGS_CASES=' |
671 | case '\'p\'': | |
dea514f5 | 672 | /* Only here for backwards compatibility. */ |
41392f03 | 673 | break; |
252b5132 | 674 | |
41392f03 | 675 | case OPTION_THUMB_ENTRY: |
68c39892 | 676 | params.thumb_entry_symbol = optarg; |
41392f03 | 677 | break; |
e489d0ae PB |
678 | |
679 | case OPTION_BE8: | |
68c39892 | 680 | params.byteswap_code = 1; |
e489d0ae | 681 | break; |
9c504268 PB |
682 | |
683 | case OPTION_TARGET1_REL: | |
68c39892 | 684 | params.target1_is_rel = 1; |
9c504268 PB |
685 | break; |
686 | ||
687 | case OPTION_TARGET1_ABS: | |
68c39892 | 688 | params.target1_is_rel = 0; |
9c504268 | 689 | break; |
3674e28a PB |
690 | |
691 | case OPTION_TARGET2: | |
68c39892 | 692 | params.target2_type = optarg; |
3674e28a | 693 | break; |
319850b4 JB |
694 | |
695 | case OPTION_FIX_V4BX: | |
68c39892 | 696 | params.fix_v4bx = 1; |
319850b4 | 697 | break; |
33bfe774 | 698 | |
845b51d6 | 699 | case OPTION_FIX_V4BX_INTERWORKING: |
68c39892 | 700 | params.fix_v4bx = 2; |
845b51d6 PB |
701 | break; |
702 | ||
33bfe774 | 703 | case OPTION_USE_BLX: |
68c39892 | 704 | params.use_blx = 1; |
33bfe774 | 705 | break; |
92b93329 | 706 | |
c6dd86c6 JB |
707 | case OPTION_VFP11_DENORM_FIX: |
708 | if (strcmp (optarg, "none") == 0) | |
6c19b93b | 709 | params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_NONE; |
c6dd86c6 | 710 | else if (strcmp (optarg, "scalar") == 0) |
6c19b93b | 711 | params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_SCALAR; |
c6dd86c6 | 712 | else if (strcmp (optarg, "vector") == 0) |
6c19b93b | 713 | params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_VECTOR; |
c6dd86c6 | 714 | else |
df5f2391 | 715 | einfo (_("%P: unrecognized VFP11 fix type '\''%s'\''\n"), optarg); |
c6dd86c6 | 716 | break; |
bf21ed78 | 717 | |
a504d23a LA |
718 | case OPTION_STM32L4XX_FIX: |
719 | if (!optarg) | |
6c19b93b | 720 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT; |
a504d23a | 721 | else if (strcmp (optarg, "none") == 0) |
6c19b93b | 722 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE; |
a504d23a | 723 | else if (strcmp (optarg, "default") == 0) |
6c19b93b | 724 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT; |
a504d23a | 725 | else if (strcmp (optarg, "all") == 0) |
6c19b93b | 726 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_ALL; |
a504d23a | 727 | else |
df5f2391 | 728 | einfo (_("%P: unrecognized STM32L4XX fix type '\''%s'\''\n"), optarg); |
a504d23a LA |
729 | break; |
730 | ||
bf21ed78 | 731 | case OPTION_NO_ENUM_SIZE_WARNING: |
68c39892 | 732 | params.no_enum_size_warning = 1; |
bf21ed78 | 733 | break; |
27e55c4d | 734 | |
a9dc9481 | 735 | case OPTION_NO_WCHAR_SIZE_WARNING: |
68c39892 | 736 | params.no_wchar_size_warning = 1; |
a9dc9481 JM |
737 | break; |
738 | ||
27e55c4d | 739 | case OPTION_PIC_VENEER: |
68c39892 | 740 | params.pic_veneer = 1; |
27e55c4d | 741 | break; |
906e58ca NC |
742 | |
743 | case OPTION_STUBGROUP_SIZE: | |
744 | { | |
745 | const char *end; | |
746 | ||
6c19b93b AM |
747 | group_size = bfd_scan_vma (optarg, &end, 0); |
748 | if (*end) | |
df5f2391 | 749 | einfo (_("%F%P: invalid number `%s'\''\n"), optarg); |
906e58ca NC |
750 | } |
751 | break; | |
48229727 JB |
752 | |
753 | case OPTION_FIX_CORTEX_A8: | |
68c39892 | 754 | params.fix_cortex_a8 = 1; |
48229727 JB |
755 | break; |
756 | ||
757 | case OPTION_NO_FIX_CORTEX_A8: | |
68c39892 | 758 | params.fix_cortex_a8 = 0; |
48229727 | 759 | break; |
85fdf906 AH |
760 | |
761 | case OPTION_NO_MERGE_EXIDX_ENTRIES: | |
68c39892 | 762 | params.merge_exidx_entries = 0; |
2de70689 | 763 | break; |
85fdf906 | 764 | |
2de70689 | 765 | case OPTION_FIX_ARM1176: |
68c39892 | 766 | params.fix_arm1176 = 1; |
2de70689 MGD |
767 | break; |
768 | ||
769 | case OPTION_NO_FIX_ARM1176: | |
68c39892 | 770 | params.fix_arm1176 = 0; |
2de70689 | 771 | break; |
1db37fe6 YG |
772 | |
773 | case OPTION_LONG_PLT: | |
774 | bfd_elf32_arm_use_long_plt (); | |
775 | break; | |
54ddd295 TP |
776 | |
777 | case OPTION_CMSE_IMPLIB: | |
68c39892 | 778 | params.cmse_implib = 1; |
54ddd295 | 779 | break; |
0955507f TP |
780 | |
781 | case OPTION_IN_IMPLIB: | |
782 | in_implib_filename = optarg; | |
783 | break; | |
41392f03 | 784 | ' |
252b5132 | 785 | |
3e6b1042 | 786 | # We have our own before_allocation etc. functions, but they call |
41392f03 | 787 | # the standard routines, so give them a different name. |
41392f03 | 788 | LDEMUL_BEFORE_ALLOCATION=arm_elf_before_allocation |
eaeb0a9d | 789 | LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
3674e28a | 790 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=arm_elf_create_output_section_statements |
252b5132 | 791 | |
41392f03 AM |
792 | # Replace the elf before_parse function with our own. |
793 | LDEMUL_BEFORE_PARSE=gld"${EMULATION_NAME}"_before_parse | |
3940d2c3 | 794 | LDEMUL_SET_SYMBOLS=gld"${EMULATION_NAME}"_set_symbols |
252b5132 | 795 | |
41392f03 | 796 | # Call the extra arm-elf function |
906e58ca | 797 | LDEMUL_FINISH=gld${EMULATION_NAME}_finish |