Commit | Line | Data |
---|---|---|
252b5132 | 1 | # This shell script emits a C file. -*- C -*- |
b3adc24a | 2 | # Copyright (C) 1991-2020 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 | ||
075a2b89 | 22 | # This file is sourced from elf.em, and defines extra arm-elf |
41392f03 AM |
23 | # specific routines. |
24 | # | |
a82644e2 | 25 | test -z "$TARGET2_TYPE" && TARGET2_TYPE="rel" |
92b93329 | 26 | fragment <<EOF |
7ca69e9e | 27 | |
906e58ca | 28 | #include "ldctor.h" |
1d022697 | 29 | #include "elf/arm.h" |
f37164d7 | 30 | #include "elf32-arm.h" |
1d022697 | 31 | |
68c39892 TP |
32 | static struct elf32_arm_params params = |
33 | { | |
34 | NULL, /* thumb_entry_symbol */ | |
35 | 0, /* byteswap_code */ | |
36 | 0${TARGET1_IS_REL}, /* target1_is_rel */ | |
37 | "${TARGET2_TYPE}", /* target2_type */ | |
38 | 0, /* fix_v4bx */ | |
39 | 0, /* use_blx */ | |
40 | BFD_ARM_VFP11_FIX_DEFAULT, /* vfp11_denorm_fix */ | |
41 | BFD_ARM_STM32L4XX_FIX_NONE, /* stm32l4xx_fix */ | |
42 | 0, /* no_enum_size_warning */ | |
43 | 0, /* no_wchar_size_warning */ | |
44 | 0, /* pic_veneer */ | |
45 | -1, /* fix_cortex_a8 */ | |
46 | 1, /* fix_arm1176 */ | |
47 | -1, /* merge_exidx_entries */ | |
48 | 0, /* cmse_implib */ | |
49 | NULL /* in_implib_bfd */ | |
50 | }; | |
0955507f | 51 | static char *in_implib_filename = NULL; |
7ca69e9e | 52 | |
252b5132 | 53 | static void |
0c7a8e5a | 54 | gld${EMULATION_NAME}_before_parse (void) |
252b5132 RH |
55 | { |
56 | #ifndef TARGET_ /* I.e., if not generic. */ | |
5e2f1575 | 57 | ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown); |
252b5132 | 58 | #endif /* not TARGET_ */ |
66be1055 | 59 | input_flags.dynamic = ${DYNAMIC_LINK-TRUE}; |
b34976b6 | 60 | config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`; |
e2caaa1f | 61 | config.separate_code = `if test "x${SEPARATE_CODE}" = xyes ; then echo TRUE ; else echo FALSE ; fi`; |
5c3261b0 | 62 | link_info.check_relocs_after_open_input = TRUE; |
576438f0 | 63 | link_info.relro = DEFAULT_LD_Z_RELRO; |
252b5132 RH |
64 | } |
65 | ||
3940d2c3 NC |
66 | static void |
67 | gld${EMULATION_NAME}_set_symbols (void) | |
68 | { | |
69 | /* PR 19106: The section resizing code in gldarmelf_after_allocation | |
70 | is effectively the same as relaxation, so prevent early memory | |
71 | region checks which produce bogus error messages. | |
72 | Note - this test has nothing to do with symbols. It is just here | |
73 | because this is the first emulation routine that is called after | |
74 | the command line has been parsed. */ | |
75 | if (!bfd_link_relocatable (&link_info)) | |
76 | TARGET_ENABLE_RELAXATION; | |
77 | } | |
78 | ||
1220a729 | 79 | static void |
0c7a8e5a | 80 | arm_elf_before_allocation (void) |
1220a729 | 81 | { |
68c39892 | 82 | bfd_elf32_arm_set_byteswap_code (&link_info, params.byteswap_code); |
d504ffc8 | 83 | |
c6dd86c6 JB |
84 | /* Choose type of VFP11 erratum fix, or warn if specified fix is unnecessary |
85 | due to architecture version. */ | |
f13a99db | 86 | bfd_elf32_arm_set_vfp11_fix (link_info.output_bfd, &link_info); |
c6dd86c6 | 87 | |
a504d23a LA |
88 | /* Choose type of STM32L4XX erratum fix, or warn if specified fix is |
89 | unnecessary due to architecture version. */ | |
90 | bfd_elf32_arm_set_stm32l4xx_fix (link_info.output_bfd, &link_info); | |
91 | ||
48229727 JB |
92 | /* Auto-select Cortex-A8 erratum fix if it wasn't explicitly specified. */ |
93 | bfd_elf32_arm_set_cortex_a8_fix (link_info.output_bfd, &link_info); | |
94 | ||
daa4adae TP |
95 | /* Ensure the output sections of veneers needing a dedicated one is not |
96 | removed. */ | |
97 | bfd_elf32_arm_keep_private_stub_output_sections (&link_info); | |
98 | ||
d504ffc8 DJ |
99 | /* We should be able to set the size of the interworking stub section. We |
100 | can't do it until later if we have dynamic sections, though. */ | |
cbc704f3 | 101 | if (elf_hash_table (&link_info)->dynobj == NULL) |
d504ffc8 DJ |
102 | { |
103 | /* Here we rummage through the found bfds to collect glue information. */ | |
104 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
105 | { | |
6c19b93b AM |
106 | /* Initialise mapping tables for code/data. */ |
107 | bfd_elf32_arm_init_maps (is->the_bfd); | |
c6dd86c6 | 108 | |
d504ffc8 | 109 | if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, |
c6dd86c6 | 110 | &link_info) |
a504d23a LA |
111 | || !bfd_elf32_arm_vfp11_erratum_scan (is->the_bfd, &link_info) |
112 | || !bfd_elf32_arm_stm32l4xx_erratum_scan (is->the_bfd, | |
113 | &link_info)) | |
252b5132 | 114 | /* xgettext:c-format */ |
df5f2391 AM |
115 | einfo (_("%P: errors encountered processing file %s\n"), |
116 | is->filename); | |
d504ffc8 | 117 | } |
3e6b1042 DJ |
118 | |
119 | /* We have seen it all. Allocate it, and carry on. */ | |
120 | bfd_elf32_arm_allocate_interworking_sections (& link_info); | |
d504ffc8 | 121 | } |
252b5132 | 122 | |
063d4ee1 AM |
123 | /* Call the standard elf routine. */ |
124 | gld${EMULATION_NAME}_before_allocation (); | |
252b5132 RH |
125 | } |
126 | ||
906e58ca NC |
127 | /* Fake input file for stubs. */ |
128 | static lang_input_statement_type *stub_file; | |
129 | ||
130 | /* Whether we need to call gldarm_layout_sections_again. */ | |
131 | static int need_laying_out = 0; | |
132 | ||
133 | /* Maximum size of a group of input sections that can be handled by | |
134 | one stub section. A value of +/-1 indicates the bfd back-end | |
135 | should use a suitable default size. */ | |
136 | static bfd_signed_vma group_size = 1; | |
137 | ||
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 | ||
146 | static bfd_boolean | |
147 | hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) | |
148 | { | |
149 | lang_statement_union_type *l; | |
150 | bfd_boolean ret; | |
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 | |
07d72278 DJ |
185 | after its associated input section. */ |
186 | *(info->add.tail) = l->header.next; | |
187 | l->header.next = info->add.head; | |
906e58ca NC |
188 | return TRUE; |
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 | } | |
209 | return FALSE; | |
210 | } | |
211 | ||
212 | ||
213 | /* Call-back for elf32_arm_size_stubs. */ | |
214 | ||
215 | /* Create a new stub section, and arrange for it to be linked | |
07d72278 | 216 | immediately after INPUT_SECTION. */ |
906e58ca NC |
217 | |
218 | static asection * | |
7a89b94e | 219 | elf32_arm_add_stub_section (const char * stub_sec_name, |
6bde4c52 TP |
220 | asection * output_section, |
221 | asection * after_input_section, | |
7a89b94e | 222 | unsigned int alignment_power) |
906e58ca NC |
223 | { |
224 | asection *stub_sec; | |
225 | flagword flags; | |
906e58ca NC |
226 | lang_output_section_statement_type *os; |
227 | struct hook_stub_info info; | |
228 | ||
906e58ca | 229 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
abf874aa CL |
230 | | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP |
231 | | SEC_LINKER_CREATED); | |
9795b468 AM |
232 | stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd, |
233 | stub_sec_name, flags); | |
234 | if (stub_sec == NULL) | |
906e58ca NC |
235 | goto err_ret; |
236 | ||
fd361982 | 237 | bfd_set_section_alignment (stub_sec, alignment_power); |
906e58ca | 238 | |
24ef1aa7 | 239 | os = lang_output_section_get (output_section); |
906e58ca | 240 | |
6bde4c52 | 241 | info.input_section = after_input_section; |
906e58ca | 242 | lang_list_init (&info.add); |
b9c361e0 | 243 | lang_add_section (&info.add, stub_sec, NULL, os); |
906e58ca NC |
244 | |
245 | if (info.add.head == NULL) | |
246 | goto err_ret; | |
247 | ||
6bde4c52 TP |
248 | if (after_input_section == NULL) |
249 | { | |
250 | lang_statement_union_type **lp = &os->children.head; | |
251 | lang_statement_union_type *l, *lprev = NULL; | |
252 | ||
253 | for (; (l = *lp) != NULL; lp = &l->header.next, lprev = l); | |
254 | ||
255 | if (lprev) | |
256 | lprev->header.next = info.add.head; | |
257 | else | |
258 | os->children.head = info.add.head; | |
259 | ||
260 | return stub_sec; | |
261 | } | |
262 | else | |
263 | { | |
264 | if (hook_in_stub (&info, &os->children.head)) | |
265 | return stub_sec; | |
266 | } | |
906e58ca NC |
267 | |
268 | err_ret: | |
d003af55 | 269 | einfo (_("%X%P: can not make stub section: %E\n")); |
906e58ca NC |
270 | return NULL; |
271 | } | |
272 | ||
273 | /* Another call-back for elf_arm_size_stubs. */ | |
274 | ||
6f798e5c | 275 | static void |
906e58ca NC |
276 | gldarm_layout_sections_again (void) |
277 | { | |
278 | /* If we have changed sizes of the stub sections, then we need | |
279 | to recalculate all the section offsets. This may mean we need to | |
280 | add even more stubs. */ | |
d871d478 | 281 | ldelf_map_segments (TRUE); |
906e58ca NC |
282 | need_laying_out = -1; |
283 | } | |
284 | ||
285 | static void | |
286 | build_section_lists (lang_statement_union_type *statement) | |
287 | { | |
288 | if (statement->header.type == lang_input_section_enum) | |
289 | { | |
290 | asection *i = statement->input_section.section; | |
291 | ||
dbaa2011 | 292 | if (i->sec_info_type != SEC_INFO_TYPE_JUST_SYMS |
906e58ca NC |
293 | && (i->flags & SEC_EXCLUDE) == 0 |
294 | && i->output_section != NULL | |
295 | && i->output_section->owner == link_info.output_bfd) | |
296 | elf32_arm_next_input_section (& link_info, i); | |
297 | } | |
298 | } | |
299 | ||
2468f9c9 PB |
300 | static int |
301 | compare_output_sec_vma (const void *a, const void *b) | |
302 | { | |
303 | asection *asec = *(asection **) a, *bsec = *(asection **) b; | |
304 | asection *aout = asec->output_section, *bout = bsec->output_section; | |
305 | bfd_vma avma, bvma; | |
e2caaa1f | 306 | |
2468f9c9 PB |
307 | /* If there's no output section for some reason, compare equal. */ |
308 | if (!aout || !bout) | |
309 | return 0; | |
e2caaa1f | 310 | |
2468f9c9 PB |
311 | avma = aout->vma + asec->output_offset; |
312 | bvma = bout->vma + bsec->output_offset; | |
e2caaa1f | 313 | |
2468f9c9 PB |
314 | if (avma > bvma) |
315 | return 1; | |
316 | else if (avma < bvma) | |
317 | return -1; | |
e2caaa1f | 318 | |
2468f9c9 PB |
319 | return 0; |
320 | } | |
321 | ||
906e58ca | 322 | static void |
eaeb0a9d | 323 | gld${EMULATION_NAME}_after_allocation (void) |
6f798e5c | 324 | { |
75938853 AM |
325 | int ret; |
326 | ||
491d01d3 YU |
327 | /* Build a sorted list of input text sections, then use that to process |
328 | the unwind table index. */ | |
329 | unsigned int list_size = 10; | |
330 | asection **sec_list = (asection **) | |
331 | xmalloc (list_size * sizeof (asection *)); | |
332 | unsigned int sec_count = 0; | |
333 | ||
334 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
2468f9c9 | 335 | { |
491d01d3 YU |
336 | bfd *abfd = is->the_bfd; |
337 | asection *sec; | |
e2caaa1f | 338 | |
491d01d3 YU |
339 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
340 | continue; | |
e2caaa1f | 341 | |
491d01d3 YU |
342 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
343 | { | |
344 | asection *out_sec = sec->output_section; | |
345 | ||
346 | if (out_sec | |
347 | && elf_section_data (sec) | |
348 | && elf_section_type (sec) == SHT_PROGBITS | |
349 | && (elf_section_flags (sec) & SHF_EXECINSTR) != 0 | |
350 | && (sec->flags & SEC_EXCLUDE) == 0 | |
351 | && sec->sec_info_type != SEC_INFO_TYPE_JUST_SYMS | |
352 | && out_sec != bfd_abs_section_ptr) | |
2468f9c9 | 353 | { |
491d01d3 | 354 | if (sec_count == list_size) |
2468f9c9 | 355 | { |
491d01d3 YU |
356 | list_size *= 2; |
357 | sec_list = (asection **) | |
358 | xrealloc (sec_list, list_size * sizeof (asection *)); | |
2468f9c9 | 359 | } |
491d01d3 YU |
360 | |
361 | sec_list[sec_count++] = sec; | |
2468f9c9 PB |
362 | } |
363 | } | |
491d01d3 | 364 | } |
e2caaa1f | 365 | |
491d01d3 | 366 | qsort (sec_list, sec_count, sizeof (asection *), &compare_output_sec_vma); |
e2caaa1f | 367 | |
491d01d3 | 368 | if (elf32_arm_fix_exidx_coverage (sec_list, sec_count, &link_info, |
68c39892 | 369 | params.merge_exidx_entries)) |
491d01d3 | 370 | need_laying_out = 1; |
e2caaa1f | 371 | |
491d01d3 | 372 | free (sec_list); |
6f798e5c | 373 | |
906e58ca NC |
374 | /* bfd_elf32_discard_info just plays with debugging sections, |
375 | ie. doesn't affect any code, so we can delay resizing the | |
376 | sections. It's likely we'll resize everything in the process of | |
377 | adding stubs. */ | |
75938853 AM |
378 | ret = bfd_elf_discard_info (link_info.output_bfd, & link_info); |
379 | if (ret < 0) | |
380 | { | |
d003af55 | 381 | einfo (_("%X%P: .eh_frame/.stab edit: %E\n")); |
75938853 AM |
382 | return; |
383 | } | |
384 | else if (ret > 0) | |
906e58ca NC |
385 | need_laying_out = 1; |
386 | ||
387 | /* If generating a relocatable output file, then we don't | |
388 | have to examine the relocs. */ | |
0e1862bb | 389 | if (stub_file != NULL && !bfd_link_relocatable (&link_info)) |
906e58ca | 390 | { |
75938853 | 391 | ret = elf32_arm_setup_section_lists (link_info.output_bfd, &link_info); |
906e58ca NC |
392 | if (ret != 0) |
393 | { | |
394 | if (ret < 0) | |
395 | { | |
d003af55 AM |
396 | einfo (_("%X%P: could not compute sections lists " |
397 | "for stub generation: %E\n")); | |
906e58ca NC |
398 | return; |
399 | } | |
400 | ||
401 | lang_for_each_statement (build_section_lists); | |
402 | ||
403 | /* Call into the BFD backend to do the real work. */ | |
404 | if (! elf32_arm_size_stubs (link_info.output_bfd, | |
405 | stub_file->the_bfd, | |
406 | & link_info, | |
407 | group_size, | |
408 | & elf32_arm_add_stub_section, | |
409 | & gldarm_layout_sections_again)) | |
410 | { | |
df5f2391 | 411 | einfo (_("%X%P: can not size stub section: %E\n")); |
906e58ca NC |
412 | return; |
413 | } | |
414 | } | |
415 | } | |
416 | ||
417 | if (need_laying_out != -1) | |
d871d478 | 418 | ldelf_map_segments (need_laying_out); |
eaeb0a9d AM |
419 | } |
420 | ||
421 | static void | |
422 | gld${EMULATION_NAME}_finish (void) | |
423 | { | |
424 | struct bfd_link_hash_entry * h; | |
425 | ||
426 | { | |
427 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
428 | { | |
6c19b93b AM |
429 | /* Figure out where VFP11 erratum veneers (and the labels returning |
430 | from same) have been placed. */ | |
431 | bfd_elf32_arm_vfp11_fix_veneer_locations (is->the_bfd, &link_info); | |
a504d23a LA |
432 | |
433 | /* Figure out where STM32L4XX erratum veneers (and the labels returning | |
434 | from them) have been placed. */ | |
435 | bfd_elf32_arm_stm32l4xx_fix_veneer_locations (is->the_bfd, &link_info); | |
eaeb0a9d AM |
436 | } |
437 | } | |
906e58ca | 438 | |
0e1862bb | 439 | if (!bfd_link_relocatable (&link_info)) |
906e58ca NC |
440 | { |
441 | /* Now build the linker stubs. */ | |
442 | if (stub_file->the_bfd->sections != NULL) | |
443 | { | |
444 | if (! elf32_arm_build_stubs (& link_info)) | |
d003af55 | 445 | einfo (_("%X%P: can not build stubs: %E\n")); |
906e58ca NC |
446 | } |
447 | } | |
448 | ||
449 | finish_default (); | |
c56feb2b | 450 | |
68c39892 | 451 | if (params.thumb_entry_symbol) |
1d022697 | 452 | { |
68c39892 | 453 | h = bfd_link_hash_lookup (link_info.hash, params.thumb_entry_symbol, |
1d022697 PB |
454 | FALSE, FALSE, TRUE); |
455 | } | |
456 | else | |
457 | { | |
458 | struct elf_link_hash_entry * eh; | |
459 | ||
460 | if (!entry_symbol.name) | |
461 | return; | |
462 | ||
463 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name, | |
464 | FALSE, FALSE, TRUE); | |
465 | eh = (struct elf_link_hash_entry *)h; | |
39d911fc TP |
466 | if (!h || ARM_GET_SYM_BRANCH_TYPE (eh->target_internal) |
467 | != ST_BRANCH_TO_THUMB) | |
1d022697 PB |
468 | return; |
469 | } | |
0c7a8e5a | 470 | |
6f798e5c NC |
471 | |
472 | if (h != (struct bfd_link_hash_entry *) NULL | |
473 | && (h->type == bfd_link_hash_defined | |
474 | || h->type == bfd_link_hash_defweak) | |
475 | && h->u.def.section->output_section != NULL) | |
476 | { | |
477 | static char buffer[32]; | |
88f7bcd5 | 478 | bfd_vma val; |
0c7a8e5a | 479 | |
88f7bcd5 NC |
480 | /* Special procesing is required for a Thumb entry symbol. The |
481 | bottom bit of its address must be set. */ | |
482 | val = (h->u.def.value | |
fd361982 | 483 | + bfd_section_vma (h->u.def.section->output_section) |
88f7bcd5 | 484 | + h->u.def.section->output_offset); |
0c7a8e5a | 485 | |
88f7bcd5 | 486 | val |= 1; |
6f798e5c | 487 | |
88f7bcd5 | 488 | /* Now convert this value into a string and store it in entry_symbol |
0c7a8e5a | 489 | where the lang_finish() function will pick it up. */ |
88f7bcd5 NC |
490 | buffer[0] = '0'; |
491 | buffer[1] = 'x'; | |
0c7a8e5a | 492 | |
88f7bcd5 | 493 | sprintf_vma (buffer + 2, val); |
6f798e5c | 494 | |
68c39892 | 495 | if (params.thumb_entry_symbol != NULL && entry_symbol.name != NULL |
1d022697 | 496 | && entry_from_cmdline) |
88f7bcd5 | 497 | einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), |
68c39892 | 498 | params.thumb_entry_symbol, entry_symbol.name); |
88f7bcd5 | 499 | entry_symbol.name = buffer; |
6f798e5c | 500 | } |
88f7bcd5 | 501 | else |
6241fe3d | 502 | einfo (_("%P: warning: cannot find thumb start symbol %s\n"), |
f5a1cdde | 503 | h->root.string); |
6f798e5c NC |
504 | } |
505 | ||
bf21ed78 | 506 | /* This is a convenient point to tell BFD about target specific flags. |
3674e28a PB |
507 | After the output has been created, but before inputs are read. */ |
508 | static void | |
509 | arm_elf_create_output_section_statements (void) | |
510 | { | |
b8976b05 NC |
511 | if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL) |
512 | { | |
513 | /* The arm backend needs special fields in the output hash structure. | |
514 | These will only be created if the output format is an arm format, | |
515 | hence we do not support linking and changing output formats at the | |
516 | same time. Use a link followed by objcopy to change output formats. */ | |
df5f2391 AM |
517 | einfo (_("%F%P: error: cannot change output format " |
518 | "whilst linking %s binaries\n"), "ARM"); | |
b8976b05 NC |
519 | return; |
520 | } | |
521 | ||
0955507f TP |
522 | if (in_implib_filename) |
523 | { | |
68c39892 TP |
524 | params.in_implib_bfd = bfd_openr (in_implib_filename, |
525 | bfd_get_target (link_info.output_bfd)); | |
0955507f | 526 | |
68c39892 | 527 | if (params.in_implib_bfd == NULL) |
df5f2391 | 528 | einfo (_("%F%P: %s: can't open: %E\n"), in_implib_filename); |
0955507f | 529 | |
68c39892 | 530 | if (!bfd_check_format (params.in_implib_bfd, bfd_object)) |
df5f2391 | 531 | einfo (_("%F%P: %s: not a relocatable file: %E\n"), in_implib_filename); |
0955507f | 532 | } |
0955507f | 533 | |
68c39892 | 534 | bfd_elf32_arm_set_target_params (link_info.output_bfd, &link_info, ¶ms); |
906e58ca NC |
535 | |
536 | stub_file = lang_add_input_file ("linker stubs", | |
6c19b93b AM |
537 | lang_input_file_is_fake_enum, |
538 | NULL); | |
906e58ca NC |
539 | stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd); |
540 | if (stub_file->the_bfd == NULL | |
541 | || ! bfd_set_arch_mach (stub_file->the_bfd, | |
6c19b93b AM |
542 | bfd_get_arch (link_info.output_bfd), |
543 | bfd_get_mach (link_info.output_bfd))) | |
906e58ca | 544 | { |
df5f2391 | 545 | einfo (_("%F%P: can not create BFD: %E\n")); |
906e58ca NC |
546 | return; |
547 | } | |
e2caaa1f | 548 | |
906e58ca NC |
549 | stub_file->the_bfd->flags |= BFD_LINKER_CREATED; |
550 | ldlang_add_file (stub_file); | |
3e6b1042 DJ |
551 | |
552 | /* Also use the stub file for stubs placed in a single output section. */ | |
553 | bfd_elf32_arm_add_glue_sections_to_bfd (stub_file->the_bfd, &link_info); | |
554 | bfd_elf32_arm_get_bfd_for_interworking (stub_file->the_bfd, &link_info); | |
906e58ca NC |
555 | } |
556 | ||
252b5132 RH |
557 | EOF |
558 | ||
41392f03 AM |
559 | # Define some shell vars to insert bits of code into the standard elf |
560 | # parse_args and list_options functions. | |
561 | # | |
562 | PARSE_AND_LIST_PROLOGUE=' | |
563 | #define OPTION_THUMB_ENTRY 301 | |
e489d0ae | 564 | #define OPTION_BE8 302 |
9c504268 PB |
565 | #define OPTION_TARGET1_REL 303 |
566 | #define OPTION_TARGET1_ABS 304 | |
3674e28a | 567 | #define OPTION_TARGET2 305 |
33bfe774 JB |
568 | #define OPTION_FIX_V4BX 306 |
569 | #define OPTION_USE_BLX 307 | |
c6dd86c6 | 570 | #define OPTION_VFP11_DENORM_FIX 308 |
bf21ed78 | 571 | #define OPTION_NO_ENUM_SIZE_WARNING 309 |
27e55c4d | 572 | #define OPTION_PIC_VENEER 310 |
845b51d6 | 573 | #define OPTION_FIX_V4BX_INTERWORKING 311 |
8c45e5ec | 574 | #define OPTION_STUBGROUP_SIZE 312 |
a9dc9481 | 575 | #define OPTION_NO_WCHAR_SIZE_WARNING 313 |
48229727 JB |
576 | #define OPTION_FIX_CORTEX_A8 314 |
577 | #define OPTION_NO_FIX_CORTEX_A8 315 | |
8c45e5ec | 578 | #define OPTION_NO_MERGE_EXIDX_ENTRIES 316 |
2de70689 MGD |
579 | #define OPTION_FIX_ARM1176 317 |
580 | #define OPTION_NO_FIX_ARM1176 318 | |
8c45e5ec | 581 | #define OPTION_LONG_PLT 319 |
a504d23a | 582 | #define OPTION_STM32L4XX_FIX 320 |
54ddd295 | 583 | #define OPTION_CMSE_IMPLIB 321 |
0955507f | 584 | #define OPTION_IN_IMPLIB 322 |
41392f03 | 585 | ' |
252b5132 | 586 | |
ef5bdbd1 | 587 | PARSE_AND_LIST_SHORTOPTS=p |
252b5132 | 588 | |
41392f03 AM |
589 | PARSE_AND_LIST_LONGOPTS=' |
590 | { "no-pipeline-knowledge", no_argument, NULL, '\'p\''}, | |
591 | { "thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, | |
e489d0ae | 592 | { "be8", no_argument, NULL, OPTION_BE8}, |
9c504268 PB |
593 | { "target1-rel", no_argument, NULL, OPTION_TARGET1_REL}, |
594 | { "target1-abs", no_argument, NULL, OPTION_TARGET1_ABS}, | |
3674e28a | 595 | { "target2", required_argument, NULL, OPTION_TARGET2}, |
319850b4 | 596 | { "fix-v4bx", no_argument, NULL, OPTION_FIX_V4BX}, |
845b51d6 | 597 | { "fix-v4bx-interworking", no_argument, NULL, OPTION_FIX_V4BX_INTERWORKING}, |
33bfe774 | 598 | { "use-blx", no_argument, NULL, OPTION_USE_BLX}, |
c6dd86c6 | 599 | { "vfp11-denorm-fix", required_argument, NULL, OPTION_VFP11_DENORM_FIX}, |
a504d23a | 600 | { "fix-stm32l4xx-629360", optional_argument, NULL, OPTION_STM32L4XX_FIX}, |
bf21ed78 | 601 | { "no-enum-size-warning", no_argument, NULL, OPTION_NO_ENUM_SIZE_WARNING}, |
27e55c4d | 602 | { "pic-veneer", no_argument, NULL, OPTION_PIC_VENEER}, |
906e58ca | 603 | { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, |
a9dc9481 | 604 | { "no-wchar-size-warning", no_argument, NULL, OPTION_NO_WCHAR_SIZE_WARNING}, |
48229727 JB |
605 | { "fix-cortex-a8", no_argument, NULL, OPTION_FIX_CORTEX_A8 }, |
606 | { "no-fix-cortex-a8", no_argument, NULL, OPTION_NO_FIX_CORTEX_A8 }, | |
85fdf906 | 607 | { "no-merge-exidx-entries", no_argument, NULL, OPTION_NO_MERGE_EXIDX_ENTRIES }, |
2de70689 MGD |
608 | { "fix-arm1176", no_argument, NULL, OPTION_FIX_ARM1176 }, |
609 | { "no-fix-arm1176", no_argument, NULL, OPTION_NO_FIX_ARM1176 }, | |
1db37fe6 | 610 | { "long-plt", no_argument, NULL, OPTION_LONG_PLT }, |
54ddd295 | 611 | { "cmse-implib", no_argument, NULL, OPTION_CMSE_IMPLIB }, |
0955507f | 612 | { "in-implib", required_argument, NULL, OPTION_IN_IMPLIB }, |
41392f03 | 613 | ' |
252b5132 | 614 | |
41392f03 | 615 | PARSE_AND_LIST_OPTIONS=' |
442996ee | 616 | fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n")); |
4a977a31 | 617 | fprintf (file, _(" --be8 Output BE8 format image\n")); |
f8266dc4 NC |
618 | fprintf (file, _(" --target1-rel Interpret R_ARM_TARGET1 as R_ARM_REL32\n")); |
619 | fprintf (file, _(" --target1-abs Interpret R_ARM_TARGET1 as R_ARM_ABS32\n")); | |
442996ee AM |
620 | fprintf (file, _(" --target2=<type> Specify definition of R_ARM_TARGET2\n")); |
621 | fprintf (file, _(" --fix-v4bx Rewrite BX rn as MOV pc, rn for ARMv4\n")); | |
845b51d6 | 622 | fprintf (file, _(" --fix-v4bx-interworking Rewrite BX rn branch to ARMv4 interworking veneer\n")); |
442996ee AM |
623 | fprintf (file, _(" --use-blx Enable use of BLX instructions\n")); |
624 | fprintf (file, _(" --vfp11-denorm-fix Specify how to fix VFP11 denorm erratum\n")); | |
a504d23a | 625 | fprintf (file, _(" --fix-stm32l4xx-629360 Specify how to fix STM32L4XX 629360 erratum\n")); |
893dcb0e | 626 | fprintf (file, _(" --no-enum-size-warning Don'\''t warn about objects with incompatible\n" |
442996ee | 627 | " enum sizes\n")); |
a272e28c | 628 | fprintf (file, _(" --no-wchar-size-warning Don'\''t warn about objects with incompatible\n" |
a9dc9481 | 629 | " wchar_t sizes\n")); |
442996ee | 630 | fprintf (file, _(" --pic-veneer Always generate PIC interworking veneers\n")); |
1db37fe6 YG |
631 | fprintf (file, _(" --long-plt Generate long .plt entries\n" |
632 | " to handle large .plt/.got displacements\n")); | |
54ddd295 TP |
633 | fprintf (file, _(" --cmse-implib Make import library to be a secure gateway import\n" |
634 | " library as per ARMv8-M Security Extensions\n")); | |
0955507f TP |
635 | fprintf (file, _(" --in-implib Import library whose symbols address must\n" |
636 | " remain stable\n")); | |
906e58ca | 637 | fprintf (file, _("\ |
a272e28c | 638 | --stub-group-size=N Maximum size of a group of input sections that\n\ |
df5f2391 AM |
639 | can be handled by one stub section. A negative\n\ |
640 | value locates all stubs after their branches\n\ | |
641 | (with a group size of -N), while a positive\n\ | |
642 | value allows two groups of input sections, one\n\ | |
643 | before, and one after each stub section.\n\ | |
644 | Values of +/-1 indicate the linker should\n\ | |
645 | choose suitable defaults.\n")); | |
48229727 | 646 | fprintf (file, _(" --[no-]fix-cortex-a8 Disable/enable Cortex-A8 Thumb-2 branch erratum fix\n")); |
85fdf906 | 647 | fprintf (file, _(" --no-merge-exidx-entries Disable merging exidx entries\n")); |
2de70689 | 648 | fprintf (file, _(" --[no-]fix-arm1176 Disable/enable ARM1176 BLX immediate erratum fix\n")); |
41392f03 | 649 | ' |
252b5132 | 650 | |
41392f03 AM |
651 | PARSE_AND_LIST_ARGS_CASES=' |
652 | case '\'p\'': | |
dea514f5 | 653 | /* Only here for backwards compatibility. */ |
41392f03 | 654 | break; |
252b5132 | 655 | |
41392f03 | 656 | case OPTION_THUMB_ENTRY: |
68c39892 | 657 | params.thumb_entry_symbol = optarg; |
41392f03 | 658 | break; |
e489d0ae PB |
659 | |
660 | case OPTION_BE8: | |
68c39892 | 661 | params.byteswap_code = 1; |
e489d0ae | 662 | break; |
9c504268 PB |
663 | |
664 | case OPTION_TARGET1_REL: | |
68c39892 | 665 | params.target1_is_rel = 1; |
9c504268 PB |
666 | break; |
667 | ||
668 | case OPTION_TARGET1_ABS: | |
68c39892 | 669 | params.target1_is_rel = 0; |
9c504268 | 670 | break; |
3674e28a PB |
671 | |
672 | case OPTION_TARGET2: | |
68c39892 | 673 | params.target2_type = optarg; |
3674e28a | 674 | break; |
319850b4 JB |
675 | |
676 | case OPTION_FIX_V4BX: | |
68c39892 | 677 | params.fix_v4bx = 1; |
319850b4 | 678 | break; |
33bfe774 | 679 | |
845b51d6 | 680 | case OPTION_FIX_V4BX_INTERWORKING: |
68c39892 | 681 | params.fix_v4bx = 2; |
845b51d6 PB |
682 | break; |
683 | ||
33bfe774 | 684 | case OPTION_USE_BLX: |
68c39892 | 685 | params.use_blx = 1; |
33bfe774 | 686 | break; |
92b93329 | 687 | |
c6dd86c6 JB |
688 | case OPTION_VFP11_DENORM_FIX: |
689 | if (strcmp (optarg, "none") == 0) | |
6c19b93b | 690 | params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_NONE; |
c6dd86c6 | 691 | else if (strcmp (optarg, "scalar") == 0) |
6c19b93b | 692 | params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_SCALAR; |
c6dd86c6 | 693 | else if (strcmp (optarg, "vector") == 0) |
6c19b93b | 694 | params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_VECTOR; |
c6dd86c6 | 695 | else |
df5f2391 | 696 | einfo (_("%P: unrecognized VFP11 fix type '\''%s'\''\n"), optarg); |
c6dd86c6 | 697 | break; |
bf21ed78 | 698 | |
a504d23a LA |
699 | case OPTION_STM32L4XX_FIX: |
700 | if (!optarg) | |
6c19b93b | 701 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT; |
a504d23a | 702 | else if (strcmp (optarg, "none") == 0) |
6c19b93b | 703 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE; |
a504d23a | 704 | else if (strcmp (optarg, "default") == 0) |
6c19b93b | 705 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT; |
a504d23a | 706 | else if (strcmp (optarg, "all") == 0) |
6c19b93b | 707 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_ALL; |
a504d23a | 708 | else |
df5f2391 | 709 | einfo (_("%P: unrecognized STM32L4XX fix type '\''%s'\''\n"), optarg); |
a504d23a LA |
710 | break; |
711 | ||
bf21ed78 | 712 | case OPTION_NO_ENUM_SIZE_WARNING: |
68c39892 | 713 | params.no_enum_size_warning = 1; |
bf21ed78 | 714 | break; |
27e55c4d | 715 | |
a9dc9481 | 716 | case OPTION_NO_WCHAR_SIZE_WARNING: |
68c39892 | 717 | params.no_wchar_size_warning = 1; |
a9dc9481 JM |
718 | break; |
719 | ||
27e55c4d | 720 | case OPTION_PIC_VENEER: |
68c39892 | 721 | params.pic_veneer = 1; |
27e55c4d | 722 | break; |
906e58ca NC |
723 | |
724 | case OPTION_STUBGROUP_SIZE: | |
725 | { | |
726 | const char *end; | |
727 | ||
6c19b93b AM |
728 | group_size = bfd_scan_vma (optarg, &end, 0); |
729 | if (*end) | |
df5f2391 | 730 | einfo (_("%F%P: invalid number `%s'\''\n"), optarg); |
906e58ca NC |
731 | } |
732 | break; | |
48229727 JB |
733 | |
734 | case OPTION_FIX_CORTEX_A8: | |
68c39892 | 735 | params.fix_cortex_a8 = 1; |
48229727 JB |
736 | break; |
737 | ||
738 | case OPTION_NO_FIX_CORTEX_A8: | |
68c39892 | 739 | params.fix_cortex_a8 = 0; |
48229727 | 740 | break; |
85fdf906 AH |
741 | |
742 | case OPTION_NO_MERGE_EXIDX_ENTRIES: | |
68c39892 | 743 | params.merge_exidx_entries = 0; |
2de70689 | 744 | break; |
85fdf906 | 745 | |
2de70689 | 746 | case OPTION_FIX_ARM1176: |
68c39892 | 747 | params.fix_arm1176 = 1; |
2de70689 MGD |
748 | break; |
749 | ||
750 | case OPTION_NO_FIX_ARM1176: | |
68c39892 | 751 | params.fix_arm1176 = 0; |
2de70689 | 752 | break; |
1db37fe6 YG |
753 | |
754 | case OPTION_LONG_PLT: | |
755 | bfd_elf32_arm_use_long_plt (); | |
756 | break; | |
54ddd295 TP |
757 | |
758 | case OPTION_CMSE_IMPLIB: | |
68c39892 | 759 | params.cmse_implib = 1; |
54ddd295 | 760 | break; |
0955507f TP |
761 | |
762 | case OPTION_IN_IMPLIB: | |
763 | in_implib_filename = optarg; | |
764 | break; | |
41392f03 | 765 | ' |
252b5132 | 766 | |
3e6b1042 | 767 | # We have our own before_allocation etc. functions, but they call |
41392f03 | 768 | # the standard routines, so give them a different name. |
41392f03 | 769 | LDEMUL_BEFORE_ALLOCATION=arm_elf_before_allocation |
eaeb0a9d | 770 | LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
3674e28a | 771 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=arm_elf_create_output_section_statements |
252b5132 | 772 | |
41392f03 AM |
773 | # Replace the elf before_parse function with our own. |
774 | LDEMUL_BEFORE_PARSE=gld"${EMULATION_NAME}"_before_parse | |
3940d2c3 | 775 | LDEMUL_SET_SYMBOLS=gld"${EMULATION_NAME}"_set_symbols |
252b5132 | 776 | |
41392f03 | 777 | # Call the extra arm-elf function |
906e58ca | 778 | LDEMUL_FINISH=gld${EMULATION_NAME}_finish |