Commit | Line | Data |
---|---|---|
252b5132 | 1 | # This shell script emits a C file. -*- C -*- |
250d07de | 2 | # Copyright (C) 1991-2021 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_ */ |
f38a2680 AM |
59 | input_flags.dynamic = ${DYNAMIC_LINK-true}; |
60 | config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`; | |
61 | config.separate_code = `if test "x${SEPARATE_CODE}" = xyes ; then echo true ; else echo false ; fi`; | |
62 | link_info.check_relocs_after_open_input = true; | |
5fd104ad AM |
63 | EOF |
64 | if test -n "$COMMONPAGESIZE"; then | |
65 | fragment <<EOF | |
576438f0 | 66 | link_info.relro = DEFAULT_LD_Z_RELRO; |
5fd104ad AM |
67 | EOF |
68 | fi | |
69 | fragment <<EOF | |
252b5132 RH |
70 | } |
71 | ||
3940d2c3 NC |
72 | static void |
73 | gld${EMULATION_NAME}_set_symbols (void) | |
74 | { | |
75 | /* PR 19106: The section resizing code in gldarmelf_after_allocation | |
76 | is effectively the same as relaxation, so prevent early memory | |
77 | region checks which produce bogus error messages. | |
78 | Note - this test has nothing to do with symbols. It is just here | |
79 | because this is the first emulation routine that is called after | |
80 | the command line has been parsed. */ | |
81 | if (!bfd_link_relocatable (&link_info)) | |
82 | TARGET_ENABLE_RELAXATION; | |
83 | } | |
84 | ||
1220a729 | 85 | static void |
0c7a8e5a | 86 | arm_elf_before_allocation (void) |
1220a729 | 87 | { |
68c39892 | 88 | bfd_elf32_arm_set_byteswap_code (&link_info, params.byteswap_code); |
d504ffc8 | 89 | |
c6dd86c6 JB |
90 | /* Choose type of VFP11 erratum fix, or warn if specified fix is unnecessary |
91 | due to architecture version. */ | |
f13a99db | 92 | bfd_elf32_arm_set_vfp11_fix (link_info.output_bfd, &link_info); |
c6dd86c6 | 93 | |
a504d23a LA |
94 | /* Choose type of STM32L4XX erratum fix, or warn if specified fix is |
95 | unnecessary due to architecture version. */ | |
96 | bfd_elf32_arm_set_stm32l4xx_fix (link_info.output_bfd, &link_info); | |
97 | ||
48229727 JB |
98 | /* Auto-select Cortex-A8 erratum fix if it wasn't explicitly specified. */ |
99 | bfd_elf32_arm_set_cortex_a8_fix (link_info.output_bfd, &link_info); | |
100 | ||
daa4adae TP |
101 | /* Ensure the output sections of veneers needing a dedicated one is not |
102 | removed. */ | |
103 | bfd_elf32_arm_keep_private_stub_output_sections (&link_info); | |
104 | ||
d504ffc8 DJ |
105 | /* We should be able to set the size of the interworking stub section. We |
106 | can't do it until later if we have dynamic sections, though. */ | |
cbc704f3 | 107 | if (elf_hash_table (&link_info)->dynobj == NULL) |
d504ffc8 DJ |
108 | { |
109 | /* Here we rummage through the found bfds to collect glue information. */ | |
110 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
111 | { | |
6c19b93b AM |
112 | /* Initialise mapping tables for code/data. */ |
113 | bfd_elf32_arm_init_maps (is->the_bfd); | |
c6dd86c6 | 114 | |
d504ffc8 | 115 | if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, |
c6dd86c6 | 116 | &link_info) |
a504d23a LA |
117 | || !bfd_elf32_arm_vfp11_erratum_scan (is->the_bfd, &link_info) |
118 | || !bfd_elf32_arm_stm32l4xx_erratum_scan (is->the_bfd, | |
119 | &link_info)) | |
252b5132 | 120 | /* xgettext:c-format */ |
df5f2391 AM |
121 | einfo (_("%P: errors encountered processing file %s\n"), |
122 | is->filename); | |
d504ffc8 | 123 | } |
3e6b1042 DJ |
124 | |
125 | /* We have seen it all. Allocate it, and carry on. */ | |
126 | bfd_elf32_arm_allocate_interworking_sections (& link_info); | |
d504ffc8 | 127 | } |
252b5132 | 128 | |
063d4ee1 AM |
129 | /* Call the standard elf routine. */ |
130 | gld${EMULATION_NAME}_before_allocation (); | |
252b5132 RH |
131 | } |
132 | ||
906e58ca NC |
133 | /* Fake input file for stubs. */ |
134 | static lang_input_statement_type *stub_file; | |
135 | ||
136 | /* Whether we need to call gldarm_layout_sections_again. */ | |
137 | static int need_laying_out = 0; | |
138 | ||
139 | /* Maximum size of a group of input sections that can be handled by | |
140 | one stub section. A value of +/-1 indicates the bfd back-end | |
141 | should use a suitable default size. */ | |
142 | static bfd_signed_vma group_size = 1; | |
143 | ||
144 | struct hook_stub_info | |
145 | { | |
146 | lang_statement_list_type add; | |
147 | asection *input_section; | |
148 | }; | |
149 | ||
150 | /* Traverse the linker tree to find the spot where the stub goes. */ | |
151 | ||
f38a2680 | 152 | static bool |
906e58ca NC |
153 | hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) |
154 | { | |
155 | lang_statement_union_type *l; | |
f38a2680 | 156 | bool ret; |
906e58ca NC |
157 | |
158 | for (; (l = *lp) != NULL; lp = &l->header.next) | |
159 | { | |
160 | switch (l->header.type) | |
161 | { | |
162 | case lang_constructors_statement_enum: | |
163 | ret = hook_in_stub (info, &constructor_list.head); | |
164 | if (ret) | |
165 | return ret; | |
166 | break; | |
167 | ||
168 | case lang_output_section_statement_enum: | |
169 | ret = hook_in_stub (info, | |
170 | &l->output_section_statement.children.head); | |
171 | if (ret) | |
172 | return ret; | |
173 | break; | |
174 | ||
175 | case lang_wild_statement_enum: | |
176 | ret = hook_in_stub (info, &l->wild_statement.children.head); | |
177 | if (ret) | |
178 | return ret; | |
179 | break; | |
180 | ||
181 | case lang_group_statement_enum: | |
182 | ret = hook_in_stub (info, &l->group_statement.children.head); | |
183 | if (ret) | |
184 | return ret; | |
185 | break; | |
186 | ||
187 | case lang_input_section_enum: | |
188 | if (l->input_section.section == info->input_section) | |
189 | { | |
190 | /* We've found our section. Insert the stub immediately | |
07d72278 DJ |
191 | after its associated input section. */ |
192 | *(info->add.tail) = l->header.next; | |
193 | l->header.next = info->add.head; | |
f38a2680 | 194 | return true; |
906e58ca NC |
195 | } |
196 | break; | |
197 | ||
198 | case lang_data_statement_enum: | |
199 | case lang_reloc_statement_enum: | |
200 | case lang_object_symbols_statement_enum: | |
201 | case lang_output_statement_enum: | |
202 | case lang_target_statement_enum: | |
203 | case lang_input_statement_enum: | |
204 | case lang_assignment_statement_enum: | |
205 | case lang_padding_statement_enum: | |
206 | case lang_address_statement_enum: | |
207 | case lang_fill_statement_enum: | |
208 | break; | |
209 | ||
210 | default: | |
211 | FAIL (); | |
212 | break; | |
213 | } | |
214 | } | |
f38a2680 | 215 | return false; |
906e58ca NC |
216 | } |
217 | ||
218 | ||
219 | /* Call-back for elf32_arm_size_stubs. */ | |
220 | ||
221 | /* Create a new stub section, and arrange for it to be linked | |
07d72278 | 222 | immediately after INPUT_SECTION. */ |
906e58ca NC |
223 | |
224 | static asection * | |
7a89b94e | 225 | elf32_arm_add_stub_section (const char * stub_sec_name, |
6bde4c52 TP |
226 | asection * output_section, |
227 | asection * after_input_section, | |
7a89b94e | 228 | unsigned int alignment_power) |
906e58ca NC |
229 | { |
230 | asection *stub_sec; | |
231 | flagword flags; | |
906e58ca NC |
232 | lang_output_section_statement_type *os; |
233 | struct hook_stub_info info; | |
234 | ||
906e58ca | 235 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
abf874aa CL |
236 | | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP |
237 | | SEC_LINKER_CREATED); | |
9795b468 AM |
238 | stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd, |
239 | stub_sec_name, flags); | |
240 | if (stub_sec == NULL) | |
906e58ca NC |
241 | goto err_ret; |
242 | ||
fd361982 | 243 | bfd_set_section_alignment (stub_sec, alignment_power); |
906e58ca | 244 | |
24ef1aa7 | 245 | os = lang_output_section_get (output_section); |
906e58ca | 246 | |
6bde4c52 | 247 | info.input_section = after_input_section; |
906e58ca | 248 | lang_list_init (&info.add); |
b209b5a6 | 249 | lang_add_section (&info.add, stub_sec, NULL, NULL, os); |
906e58ca NC |
250 | |
251 | if (info.add.head == NULL) | |
252 | goto err_ret; | |
253 | ||
6bde4c52 TP |
254 | if (after_input_section == NULL) |
255 | { | |
256 | lang_statement_union_type **lp = &os->children.head; | |
257 | lang_statement_union_type *l, *lprev = NULL; | |
258 | ||
259 | for (; (l = *lp) != NULL; lp = &l->header.next, lprev = l); | |
260 | ||
261 | if (lprev) | |
262 | lprev->header.next = info.add.head; | |
263 | else | |
264 | os->children.head = info.add.head; | |
265 | ||
266 | return stub_sec; | |
267 | } | |
268 | else | |
269 | { | |
270 | if (hook_in_stub (&info, &os->children.head)) | |
271 | return stub_sec; | |
272 | } | |
906e58ca NC |
273 | |
274 | err_ret: | |
d003af55 | 275 | einfo (_("%X%P: can not make stub section: %E\n")); |
906e58ca NC |
276 | return NULL; |
277 | } | |
278 | ||
279 | /* Another call-back for elf_arm_size_stubs. */ | |
280 | ||
6f798e5c | 281 | static void |
906e58ca NC |
282 | gldarm_layout_sections_again (void) |
283 | { | |
284 | /* If we have changed sizes of the stub sections, then we need | |
285 | to recalculate all the section offsets. This may mean we need to | |
286 | add even more stubs. */ | |
f38a2680 | 287 | ldelf_map_segments (true); |
906e58ca NC |
288 | need_laying_out = -1; |
289 | } | |
290 | ||
291 | static void | |
292 | build_section_lists (lang_statement_union_type *statement) | |
293 | { | |
294 | if (statement->header.type == lang_input_section_enum) | |
295 | { | |
296 | asection *i = statement->input_section.section; | |
297 | ||
dbaa2011 | 298 | if (i->sec_info_type != SEC_INFO_TYPE_JUST_SYMS |
906e58ca NC |
299 | && (i->flags & SEC_EXCLUDE) == 0 |
300 | && i->output_section != NULL | |
301 | && i->output_section->owner == link_info.output_bfd) | |
302 | elf32_arm_next_input_section (& link_info, i); | |
303 | } | |
304 | } | |
305 | ||
2468f9c9 PB |
306 | static int |
307 | compare_output_sec_vma (const void *a, const void *b) | |
308 | { | |
309 | asection *asec = *(asection **) a, *bsec = *(asection **) b; | |
310 | asection *aout = asec->output_section, *bout = bsec->output_section; | |
311 | bfd_vma avma, bvma; | |
e2caaa1f | 312 | |
2468f9c9 PB |
313 | /* If there's no output section for some reason, compare equal. */ |
314 | if (!aout || !bout) | |
315 | return 0; | |
e2caaa1f | 316 | |
2468f9c9 PB |
317 | avma = aout->vma + asec->output_offset; |
318 | bvma = bout->vma + bsec->output_offset; | |
e2caaa1f | 319 | |
2468f9c9 PB |
320 | if (avma > bvma) |
321 | return 1; | |
322 | else if (avma < bvma) | |
323 | return -1; | |
e2caaa1f | 324 | |
2468f9c9 PB |
325 | return 0; |
326 | } | |
327 | ||
906e58ca | 328 | static void |
eaeb0a9d | 329 | gld${EMULATION_NAME}_after_allocation (void) |
6f798e5c | 330 | { |
75938853 AM |
331 | int ret; |
332 | ||
491d01d3 YU |
333 | /* Build a sorted list of input text sections, then use that to process |
334 | the unwind table index. */ | |
335 | unsigned int list_size = 10; | |
336 | asection **sec_list = (asection **) | |
337 | xmalloc (list_size * sizeof (asection *)); | |
338 | unsigned int sec_count = 0; | |
339 | ||
340 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
2468f9c9 | 341 | { |
491d01d3 YU |
342 | bfd *abfd = is->the_bfd; |
343 | asection *sec; | |
e2caaa1f | 344 | |
491d01d3 YU |
345 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
346 | continue; | |
e2caaa1f | 347 | |
491d01d3 YU |
348 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
349 | { | |
350 | asection *out_sec = sec->output_section; | |
351 | ||
352 | if (out_sec | |
353 | && elf_section_data (sec) | |
354 | && elf_section_type (sec) == SHT_PROGBITS | |
355 | && (elf_section_flags (sec) & SHF_EXECINSTR) != 0 | |
356 | && (sec->flags & SEC_EXCLUDE) == 0 | |
357 | && sec->sec_info_type != SEC_INFO_TYPE_JUST_SYMS | |
358 | && out_sec != bfd_abs_section_ptr) | |
2468f9c9 | 359 | { |
491d01d3 | 360 | if (sec_count == list_size) |
2468f9c9 | 361 | { |
491d01d3 YU |
362 | list_size *= 2; |
363 | sec_list = (asection **) | |
364 | xrealloc (sec_list, list_size * sizeof (asection *)); | |
2468f9c9 | 365 | } |
491d01d3 YU |
366 | |
367 | sec_list[sec_count++] = sec; | |
2468f9c9 PB |
368 | } |
369 | } | |
491d01d3 | 370 | } |
e2caaa1f | 371 | |
491d01d3 | 372 | qsort (sec_list, sec_count, sizeof (asection *), &compare_output_sec_vma); |
e2caaa1f | 373 | |
491d01d3 | 374 | if (elf32_arm_fix_exidx_coverage (sec_list, sec_count, &link_info, |
68c39892 | 375 | params.merge_exidx_entries)) |
491d01d3 | 376 | need_laying_out = 1; |
e2caaa1f | 377 | |
491d01d3 | 378 | free (sec_list); |
6f798e5c | 379 | |
906e58ca NC |
380 | /* bfd_elf32_discard_info just plays with debugging sections, |
381 | ie. doesn't affect any code, so we can delay resizing the | |
382 | sections. It's likely we'll resize everything in the process of | |
383 | adding stubs. */ | |
75938853 AM |
384 | ret = bfd_elf_discard_info (link_info.output_bfd, & link_info); |
385 | if (ret < 0) | |
386 | { | |
d003af55 | 387 | einfo (_("%X%P: .eh_frame/.stab edit: %E\n")); |
75938853 AM |
388 | return; |
389 | } | |
390 | else if (ret > 0) | |
906e58ca NC |
391 | need_laying_out = 1; |
392 | ||
393 | /* If generating a relocatable output file, then we don't | |
394 | have to examine the relocs. */ | |
0e1862bb | 395 | if (stub_file != NULL && !bfd_link_relocatable (&link_info)) |
906e58ca | 396 | { |
75938853 | 397 | ret = elf32_arm_setup_section_lists (link_info.output_bfd, &link_info); |
906e58ca NC |
398 | if (ret != 0) |
399 | { | |
400 | if (ret < 0) | |
401 | { | |
d003af55 AM |
402 | einfo (_("%X%P: could not compute sections lists " |
403 | "for stub generation: %E\n")); | |
906e58ca NC |
404 | return; |
405 | } | |
406 | ||
407 | lang_for_each_statement (build_section_lists); | |
408 | ||
409 | /* Call into the BFD backend to do the real work. */ | |
410 | if (! elf32_arm_size_stubs (link_info.output_bfd, | |
411 | stub_file->the_bfd, | |
412 | & link_info, | |
413 | group_size, | |
414 | & elf32_arm_add_stub_section, | |
415 | & gldarm_layout_sections_again)) | |
416 | { | |
df5f2391 | 417 | einfo (_("%X%P: can not size stub section: %E\n")); |
906e58ca NC |
418 | return; |
419 | } | |
420 | } | |
421 | } | |
422 | ||
423 | if (need_laying_out != -1) | |
d871d478 | 424 | ldelf_map_segments (need_laying_out); |
eaeb0a9d AM |
425 | } |
426 | ||
427 | static void | |
428 | gld${EMULATION_NAME}_finish (void) | |
429 | { | |
430 | struct bfd_link_hash_entry * h; | |
431 | ||
432 | { | |
433 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
434 | { | |
6c19b93b AM |
435 | /* Figure out where VFP11 erratum veneers (and the labels returning |
436 | from same) have been placed. */ | |
437 | bfd_elf32_arm_vfp11_fix_veneer_locations (is->the_bfd, &link_info); | |
a504d23a LA |
438 | |
439 | /* Figure out where STM32L4XX erratum veneers (and the labels returning | |
440 | from them) have been placed. */ | |
441 | bfd_elf32_arm_stm32l4xx_fix_veneer_locations (is->the_bfd, &link_info); | |
eaeb0a9d AM |
442 | } |
443 | } | |
906e58ca | 444 | |
0e1862bb | 445 | if (!bfd_link_relocatable (&link_info)) |
906e58ca NC |
446 | { |
447 | /* Now build the linker stubs. */ | |
448 | if (stub_file->the_bfd->sections != NULL) | |
449 | { | |
450 | if (! elf32_arm_build_stubs (& link_info)) | |
d003af55 | 451 | einfo (_("%X%P: can not build stubs: %E\n")); |
906e58ca NC |
452 | } |
453 | } | |
454 | ||
455 | finish_default (); | |
c56feb2b | 456 | |
68c39892 | 457 | if (params.thumb_entry_symbol) |
1d022697 | 458 | { |
68c39892 | 459 | h = bfd_link_hash_lookup (link_info.hash, params.thumb_entry_symbol, |
f38a2680 | 460 | false, false, true); |
1d022697 PB |
461 | } |
462 | else | |
463 | { | |
464 | struct elf_link_hash_entry * eh; | |
465 | ||
fc304b88 | 466 | if (!entry_symbol.name || !is_elf_hash_table (link_info.hash)) |
1d022697 PB |
467 | return; |
468 | ||
469 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name, | |
f38a2680 | 470 | false, false, true); |
1d022697 | 471 | eh = (struct elf_link_hash_entry *)h; |
39d911fc TP |
472 | if (!h || ARM_GET_SYM_BRANCH_TYPE (eh->target_internal) |
473 | != ST_BRANCH_TO_THUMB) | |
1d022697 PB |
474 | return; |
475 | } | |
0c7a8e5a | 476 | |
6f798e5c NC |
477 | |
478 | if (h != (struct bfd_link_hash_entry *) NULL | |
479 | && (h->type == bfd_link_hash_defined | |
480 | || h->type == bfd_link_hash_defweak) | |
481 | && h->u.def.section->output_section != NULL) | |
482 | { | |
483 | static char buffer[32]; | |
88f7bcd5 | 484 | bfd_vma val; |
0c7a8e5a | 485 | |
88f7bcd5 NC |
486 | /* Special procesing is required for a Thumb entry symbol. The |
487 | bottom bit of its address must be set. */ | |
488 | val = (h->u.def.value | |
fd361982 | 489 | + bfd_section_vma (h->u.def.section->output_section) |
88f7bcd5 | 490 | + h->u.def.section->output_offset); |
0c7a8e5a | 491 | |
88f7bcd5 | 492 | val |= 1; |
6f798e5c | 493 | |
88f7bcd5 | 494 | /* Now convert this value into a string and store it in entry_symbol |
0c7a8e5a | 495 | where the lang_finish() function will pick it up. */ |
88f7bcd5 NC |
496 | buffer[0] = '0'; |
497 | buffer[1] = 'x'; | |
0c7a8e5a | 498 | |
88f7bcd5 | 499 | sprintf_vma (buffer + 2, val); |
6f798e5c | 500 | |
68c39892 | 501 | if (params.thumb_entry_symbol != NULL && entry_symbol.name != NULL |
1d022697 | 502 | && entry_from_cmdline) |
88f7bcd5 | 503 | einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), |
68c39892 | 504 | params.thumb_entry_symbol, entry_symbol.name); |
88f7bcd5 | 505 | entry_symbol.name = buffer; |
6f798e5c | 506 | } |
88f7bcd5 | 507 | else |
6241fe3d | 508 | einfo (_("%P: warning: cannot find thumb start symbol %s\n"), |
f5a1cdde | 509 | h->root.string); |
6f798e5c NC |
510 | } |
511 | ||
bf21ed78 | 512 | /* This is a convenient point to tell BFD about target specific flags. |
3674e28a PB |
513 | After the output has been created, but before inputs are read. */ |
514 | static void | |
515 | arm_elf_create_output_section_statements (void) | |
516 | { | |
b8976b05 NC |
517 | if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL) |
518 | { | |
519 | /* The arm backend needs special fields in the output hash structure. | |
520 | These will only be created if the output format is an arm format, | |
521 | hence we do not support linking and changing output formats at the | |
522 | same time. Use a link followed by objcopy to change output formats. */ | |
df5f2391 AM |
523 | einfo (_("%F%P: error: cannot change output format " |
524 | "whilst linking %s binaries\n"), "ARM"); | |
b8976b05 NC |
525 | return; |
526 | } | |
527 | ||
0955507f TP |
528 | if (in_implib_filename) |
529 | { | |
68c39892 TP |
530 | params.in_implib_bfd = bfd_openr (in_implib_filename, |
531 | bfd_get_target (link_info.output_bfd)); | |
0955507f | 532 | |
68c39892 | 533 | if (params.in_implib_bfd == NULL) |
df5f2391 | 534 | einfo (_("%F%P: %s: can't open: %E\n"), in_implib_filename); |
0955507f | 535 | |
68c39892 | 536 | if (!bfd_check_format (params.in_implib_bfd, bfd_object)) |
df5f2391 | 537 | einfo (_("%F%P: %s: not a relocatable file: %E\n"), in_implib_filename); |
0955507f | 538 | } |
0955507f | 539 | |
68c39892 | 540 | bfd_elf32_arm_set_target_params (link_info.output_bfd, &link_info, ¶ms); |
906e58ca NC |
541 | |
542 | stub_file = lang_add_input_file ("linker stubs", | |
6c19b93b AM |
543 | lang_input_file_is_fake_enum, |
544 | NULL); | |
906e58ca NC |
545 | stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd); |
546 | if (stub_file->the_bfd == NULL | |
547 | || ! bfd_set_arch_mach (stub_file->the_bfd, | |
6c19b93b AM |
548 | bfd_get_arch (link_info.output_bfd), |
549 | bfd_get_mach (link_info.output_bfd))) | |
906e58ca | 550 | { |
df5f2391 | 551 | einfo (_("%F%P: can not create BFD: %E\n")); |
906e58ca NC |
552 | return; |
553 | } | |
e2caaa1f | 554 | |
906e58ca NC |
555 | stub_file->the_bfd->flags |= BFD_LINKER_CREATED; |
556 | ldlang_add_file (stub_file); | |
3e6b1042 DJ |
557 | |
558 | /* Also use the stub file for stubs placed in a single output section. */ | |
559 | bfd_elf32_arm_add_glue_sections_to_bfd (stub_file->the_bfd, &link_info); | |
560 | bfd_elf32_arm_get_bfd_for_interworking (stub_file->the_bfd, &link_info); | |
906e58ca NC |
561 | } |
562 | ||
252b5132 RH |
563 | EOF |
564 | ||
41392f03 AM |
565 | # Define some shell vars to insert bits of code into the standard elf |
566 | # parse_args and list_options functions. | |
567 | # | |
568 | PARSE_AND_LIST_PROLOGUE=' | |
569 | #define OPTION_THUMB_ENTRY 301 | |
e489d0ae | 570 | #define OPTION_BE8 302 |
9c504268 PB |
571 | #define OPTION_TARGET1_REL 303 |
572 | #define OPTION_TARGET1_ABS 304 | |
3674e28a | 573 | #define OPTION_TARGET2 305 |
33bfe774 JB |
574 | #define OPTION_FIX_V4BX 306 |
575 | #define OPTION_USE_BLX 307 | |
c6dd86c6 | 576 | #define OPTION_VFP11_DENORM_FIX 308 |
bf21ed78 | 577 | #define OPTION_NO_ENUM_SIZE_WARNING 309 |
27e55c4d | 578 | #define OPTION_PIC_VENEER 310 |
845b51d6 | 579 | #define OPTION_FIX_V4BX_INTERWORKING 311 |
8c45e5ec | 580 | #define OPTION_STUBGROUP_SIZE 312 |
a9dc9481 | 581 | #define OPTION_NO_WCHAR_SIZE_WARNING 313 |
48229727 JB |
582 | #define OPTION_FIX_CORTEX_A8 314 |
583 | #define OPTION_NO_FIX_CORTEX_A8 315 | |
8c45e5ec | 584 | #define OPTION_NO_MERGE_EXIDX_ENTRIES 316 |
2de70689 MGD |
585 | #define OPTION_FIX_ARM1176 317 |
586 | #define OPTION_NO_FIX_ARM1176 318 | |
8c45e5ec | 587 | #define OPTION_LONG_PLT 319 |
a504d23a | 588 | #define OPTION_STM32L4XX_FIX 320 |
54ddd295 | 589 | #define OPTION_CMSE_IMPLIB 321 |
0955507f | 590 | #define OPTION_IN_IMPLIB 322 |
41392f03 | 591 | ' |
252b5132 | 592 | |
ef5bdbd1 | 593 | PARSE_AND_LIST_SHORTOPTS=p |
252b5132 | 594 | |
41392f03 AM |
595 | PARSE_AND_LIST_LONGOPTS=' |
596 | { "no-pipeline-knowledge", no_argument, NULL, '\'p\''}, | |
597 | { "thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, | |
e489d0ae | 598 | { "be8", no_argument, NULL, OPTION_BE8}, |
9c504268 PB |
599 | { "target1-rel", no_argument, NULL, OPTION_TARGET1_REL}, |
600 | { "target1-abs", no_argument, NULL, OPTION_TARGET1_ABS}, | |
3674e28a | 601 | { "target2", required_argument, NULL, OPTION_TARGET2}, |
319850b4 | 602 | { "fix-v4bx", no_argument, NULL, OPTION_FIX_V4BX}, |
845b51d6 | 603 | { "fix-v4bx-interworking", no_argument, NULL, OPTION_FIX_V4BX_INTERWORKING}, |
33bfe774 | 604 | { "use-blx", no_argument, NULL, OPTION_USE_BLX}, |
c6dd86c6 | 605 | { "vfp11-denorm-fix", required_argument, NULL, OPTION_VFP11_DENORM_FIX}, |
a504d23a | 606 | { "fix-stm32l4xx-629360", optional_argument, NULL, OPTION_STM32L4XX_FIX}, |
bf21ed78 | 607 | { "no-enum-size-warning", no_argument, NULL, OPTION_NO_ENUM_SIZE_WARNING}, |
27e55c4d | 608 | { "pic-veneer", no_argument, NULL, OPTION_PIC_VENEER}, |
906e58ca | 609 | { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, |
a9dc9481 | 610 | { "no-wchar-size-warning", no_argument, NULL, OPTION_NO_WCHAR_SIZE_WARNING}, |
48229727 JB |
611 | { "fix-cortex-a8", no_argument, NULL, OPTION_FIX_CORTEX_A8 }, |
612 | { "no-fix-cortex-a8", no_argument, NULL, OPTION_NO_FIX_CORTEX_A8 }, | |
85fdf906 | 613 | { "no-merge-exidx-entries", no_argument, NULL, OPTION_NO_MERGE_EXIDX_ENTRIES }, |
2de70689 MGD |
614 | { "fix-arm1176", no_argument, NULL, OPTION_FIX_ARM1176 }, |
615 | { "no-fix-arm1176", no_argument, NULL, OPTION_NO_FIX_ARM1176 }, | |
1db37fe6 | 616 | { "long-plt", no_argument, NULL, OPTION_LONG_PLT }, |
54ddd295 | 617 | { "cmse-implib", no_argument, NULL, OPTION_CMSE_IMPLIB }, |
0955507f | 618 | { "in-implib", required_argument, NULL, OPTION_IN_IMPLIB }, |
41392f03 | 619 | ' |
252b5132 | 620 | |
41392f03 | 621 | PARSE_AND_LIST_OPTIONS=' |
442996ee | 622 | fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n")); |
4a977a31 | 623 | fprintf (file, _(" --be8 Output BE8 format image\n")); |
f8266dc4 NC |
624 | fprintf (file, _(" --target1-rel Interpret R_ARM_TARGET1 as R_ARM_REL32\n")); |
625 | fprintf (file, _(" --target1-abs Interpret R_ARM_TARGET1 as R_ARM_ABS32\n")); | |
442996ee AM |
626 | fprintf (file, _(" --target2=<type> Specify definition of R_ARM_TARGET2\n")); |
627 | fprintf (file, _(" --fix-v4bx Rewrite BX rn as MOV pc, rn for ARMv4\n")); | |
845b51d6 | 628 | fprintf (file, _(" --fix-v4bx-interworking Rewrite BX rn branch to ARMv4 interworking veneer\n")); |
442996ee AM |
629 | fprintf (file, _(" --use-blx Enable use of BLX instructions\n")); |
630 | fprintf (file, _(" --vfp11-denorm-fix Specify how to fix VFP11 denorm erratum\n")); | |
a504d23a | 631 | fprintf (file, _(" --fix-stm32l4xx-629360 Specify how to fix STM32L4XX 629360 erratum\n")); |
893dcb0e | 632 | fprintf (file, _(" --no-enum-size-warning Don'\''t warn about objects with incompatible\n" |
442996ee | 633 | " enum sizes\n")); |
a272e28c | 634 | fprintf (file, _(" --no-wchar-size-warning Don'\''t warn about objects with incompatible\n" |
a9dc9481 | 635 | " wchar_t sizes\n")); |
442996ee | 636 | fprintf (file, _(" --pic-veneer Always generate PIC interworking veneers\n")); |
1db37fe6 YG |
637 | fprintf (file, _(" --long-plt Generate long .plt entries\n" |
638 | " to handle large .plt/.got displacements\n")); | |
54ddd295 TP |
639 | fprintf (file, _(" --cmse-implib Make import library to be a secure gateway import\n" |
640 | " library as per ARMv8-M Security Extensions\n")); | |
0955507f TP |
641 | fprintf (file, _(" --in-implib Import library whose symbols address must\n" |
642 | " remain stable\n")); | |
906e58ca | 643 | fprintf (file, _("\ |
a272e28c | 644 | --stub-group-size=N Maximum size of a group of input sections that\n\ |
df5f2391 AM |
645 | can be handled by one stub section. A negative\n\ |
646 | value locates all stubs after their branches\n\ | |
647 | (with a group size of -N), while a positive\n\ | |
648 | value allows two groups of input sections, one\n\ | |
649 | before, and one after each stub section.\n\ | |
650 | Values of +/-1 indicate the linker should\n\ | |
651 | choose suitable defaults.\n")); | |
48229727 | 652 | fprintf (file, _(" --[no-]fix-cortex-a8 Disable/enable Cortex-A8 Thumb-2 branch erratum fix\n")); |
85fdf906 | 653 | fprintf (file, _(" --no-merge-exidx-entries Disable merging exidx entries\n")); |
2de70689 | 654 | fprintf (file, _(" --[no-]fix-arm1176 Disable/enable ARM1176 BLX immediate erratum fix\n")); |
41392f03 | 655 | ' |
252b5132 | 656 | |
41392f03 AM |
657 | PARSE_AND_LIST_ARGS_CASES=' |
658 | case '\'p\'': | |
dea514f5 | 659 | /* Only here for backwards compatibility. */ |
41392f03 | 660 | break; |
252b5132 | 661 | |
41392f03 | 662 | case OPTION_THUMB_ENTRY: |
68c39892 | 663 | params.thumb_entry_symbol = optarg; |
41392f03 | 664 | break; |
e489d0ae PB |
665 | |
666 | case OPTION_BE8: | |
68c39892 | 667 | params.byteswap_code = 1; |
e489d0ae | 668 | break; |
9c504268 PB |
669 | |
670 | case OPTION_TARGET1_REL: | |
68c39892 | 671 | params.target1_is_rel = 1; |
9c504268 PB |
672 | break; |
673 | ||
674 | case OPTION_TARGET1_ABS: | |
68c39892 | 675 | params.target1_is_rel = 0; |
9c504268 | 676 | break; |
3674e28a PB |
677 | |
678 | case OPTION_TARGET2: | |
68c39892 | 679 | params.target2_type = optarg; |
3674e28a | 680 | break; |
319850b4 JB |
681 | |
682 | case OPTION_FIX_V4BX: | |
68c39892 | 683 | params.fix_v4bx = 1; |
319850b4 | 684 | break; |
33bfe774 | 685 | |
845b51d6 | 686 | case OPTION_FIX_V4BX_INTERWORKING: |
68c39892 | 687 | params.fix_v4bx = 2; |
845b51d6 PB |
688 | break; |
689 | ||
33bfe774 | 690 | case OPTION_USE_BLX: |
68c39892 | 691 | params.use_blx = 1; |
33bfe774 | 692 | break; |
92b93329 | 693 | |
c6dd86c6 JB |
694 | case OPTION_VFP11_DENORM_FIX: |
695 | if (strcmp (optarg, "none") == 0) | |
6c19b93b | 696 | params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_NONE; |
c6dd86c6 | 697 | else if (strcmp (optarg, "scalar") == 0) |
6c19b93b | 698 | params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_SCALAR; |
c6dd86c6 | 699 | else if (strcmp (optarg, "vector") == 0) |
6c19b93b | 700 | params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_VECTOR; |
c6dd86c6 | 701 | else |
df5f2391 | 702 | einfo (_("%P: unrecognized VFP11 fix type '\''%s'\''\n"), optarg); |
c6dd86c6 | 703 | break; |
bf21ed78 | 704 | |
a504d23a LA |
705 | case OPTION_STM32L4XX_FIX: |
706 | if (!optarg) | |
6c19b93b | 707 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT; |
a504d23a | 708 | else if (strcmp (optarg, "none") == 0) |
6c19b93b | 709 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE; |
a504d23a | 710 | else if (strcmp (optarg, "default") == 0) |
6c19b93b | 711 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT; |
a504d23a | 712 | else if (strcmp (optarg, "all") == 0) |
6c19b93b | 713 | params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_ALL; |
a504d23a | 714 | else |
df5f2391 | 715 | einfo (_("%P: unrecognized STM32L4XX fix type '\''%s'\''\n"), optarg); |
a504d23a LA |
716 | break; |
717 | ||
bf21ed78 | 718 | case OPTION_NO_ENUM_SIZE_WARNING: |
68c39892 | 719 | params.no_enum_size_warning = 1; |
bf21ed78 | 720 | break; |
27e55c4d | 721 | |
a9dc9481 | 722 | case OPTION_NO_WCHAR_SIZE_WARNING: |
68c39892 | 723 | params.no_wchar_size_warning = 1; |
a9dc9481 JM |
724 | break; |
725 | ||
27e55c4d | 726 | case OPTION_PIC_VENEER: |
68c39892 | 727 | params.pic_veneer = 1; |
27e55c4d | 728 | break; |
906e58ca NC |
729 | |
730 | case OPTION_STUBGROUP_SIZE: | |
731 | { | |
732 | const char *end; | |
733 | ||
6c19b93b AM |
734 | group_size = bfd_scan_vma (optarg, &end, 0); |
735 | if (*end) | |
df5f2391 | 736 | einfo (_("%F%P: invalid number `%s'\''\n"), optarg); |
906e58ca NC |
737 | } |
738 | break; | |
48229727 JB |
739 | |
740 | case OPTION_FIX_CORTEX_A8: | |
68c39892 | 741 | params.fix_cortex_a8 = 1; |
48229727 JB |
742 | break; |
743 | ||
744 | case OPTION_NO_FIX_CORTEX_A8: | |
68c39892 | 745 | params.fix_cortex_a8 = 0; |
48229727 | 746 | break; |
85fdf906 AH |
747 | |
748 | case OPTION_NO_MERGE_EXIDX_ENTRIES: | |
68c39892 | 749 | params.merge_exidx_entries = 0; |
2de70689 | 750 | break; |
85fdf906 | 751 | |
2de70689 | 752 | case OPTION_FIX_ARM1176: |
68c39892 | 753 | params.fix_arm1176 = 1; |
2de70689 MGD |
754 | break; |
755 | ||
756 | case OPTION_NO_FIX_ARM1176: | |
68c39892 | 757 | params.fix_arm1176 = 0; |
2de70689 | 758 | break; |
1db37fe6 YG |
759 | |
760 | case OPTION_LONG_PLT: | |
761 | bfd_elf32_arm_use_long_plt (); | |
762 | break; | |
54ddd295 TP |
763 | |
764 | case OPTION_CMSE_IMPLIB: | |
68c39892 | 765 | params.cmse_implib = 1; |
54ddd295 | 766 | break; |
0955507f TP |
767 | |
768 | case OPTION_IN_IMPLIB: | |
769 | in_implib_filename = optarg; | |
770 | break; | |
41392f03 | 771 | ' |
252b5132 | 772 | |
3e6b1042 | 773 | # We have our own before_allocation etc. functions, but they call |
41392f03 | 774 | # the standard routines, so give them a different name. |
41392f03 | 775 | LDEMUL_BEFORE_ALLOCATION=arm_elf_before_allocation |
eaeb0a9d | 776 | LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
3674e28a | 777 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=arm_elf_create_output_section_statements |
252b5132 | 778 | |
41392f03 AM |
779 | # Replace the elf before_parse function with our own. |
780 | LDEMUL_BEFORE_PARSE=gld"${EMULATION_NAME}"_before_parse | |
3940d2c3 | 781 | LDEMUL_SET_SYMBOLS=gld"${EMULATION_NAME}"_set_symbols |
252b5132 | 782 | |
41392f03 | 783 | # Call the extra arm-elf function |
906e58ca | 784 | LDEMUL_FINISH=gld${EMULATION_NAME}_finish |