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252b5132 | 1 | # This shell script emits a C file. -*- C -*- |
6f2750fe | 2 | # Copyright (C) 1991-2016 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 "$TARGET2_TYPE" && TARGET2_TYPE="rel" |
92b93329 | 26 | fragment <<EOF |
7ca69e9e | 27 | |
906e58ca | 28 | #include "ldctor.h" |
1d022697 PB |
29 | #include "elf/arm.h" |
30 | ||
1db37fe6 | 31 | static char * thumb_entry_symbol = NULL; |
e489d0ae | 32 | static int byteswap_code = 0; |
9c504268 | 33 | static int target1_is_rel = 0${TARGET1_IS_REL}; |
1db37fe6 | 34 | static char * target2_type = "${TARGET2_TYPE}"; |
319850b4 | 35 | static int fix_v4bx = 0; |
33bfe774 | 36 | static int use_blx = 0; |
c6dd86c6 | 37 | static bfd_arm_vfp11_fix vfp11_denorm_fix = BFD_ARM_VFP11_FIX_DEFAULT; |
a504d23a | 38 | static bfd_arm_stm32l4xx_fix stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE; |
48229727 | 39 | static int fix_cortex_a8 = -1; |
bf21ed78 | 40 | static int no_enum_size_warning = 0; |
a9dc9481 | 41 | static int no_wchar_size_warning = 0; |
27e55c4d | 42 | static int pic_veneer = 0; |
85fdf906 | 43 | static int merge_exidx_entries = -1; |
2de70689 | 44 | static int fix_arm1176 = 1; |
54ddd295 | 45 | static int cmse_implib = 0; |
7ca69e9e | 46 | |
252b5132 | 47 | static void |
0c7a8e5a | 48 | gld${EMULATION_NAME}_before_parse (void) |
252b5132 RH |
49 | { |
50 | #ifndef TARGET_ /* I.e., if not generic. */ | |
5e2f1575 | 51 | ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown); |
252b5132 | 52 | #endif /* not TARGET_ */ |
66be1055 | 53 | input_flags.dynamic = ${DYNAMIC_LINK-TRUE}; |
b34976b6 | 54 | config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`; |
e2caaa1f | 55 | config.separate_code = `if test "x${SEPARATE_CODE}" = xyes ; then echo TRUE ; else echo FALSE ; fi`; |
576438f0 | 56 | link_info.relro = DEFAULT_LD_Z_RELRO; |
252b5132 RH |
57 | } |
58 | ||
3940d2c3 NC |
59 | static void |
60 | gld${EMULATION_NAME}_set_symbols (void) | |
61 | { | |
62 | /* PR 19106: The section resizing code in gldarmelf_after_allocation | |
63 | is effectively the same as relaxation, so prevent early memory | |
64 | region checks which produce bogus error messages. | |
65 | Note - this test has nothing to do with symbols. It is just here | |
66 | because this is the first emulation routine that is called after | |
67 | the command line has been parsed. */ | |
68 | if (!bfd_link_relocatable (&link_info)) | |
69 | TARGET_ENABLE_RELAXATION; | |
70 | } | |
71 | ||
1220a729 | 72 | static void |
0c7a8e5a | 73 | arm_elf_before_allocation (void) |
1220a729 | 74 | { |
d504ffc8 DJ |
75 | bfd_elf32_arm_set_byteswap_code (&link_info, byteswap_code); |
76 | ||
c6dd86c6 JB |
77 | /* Choose type of VFP11 erratum fix, or warn if specified fix is unnecessary |
78 | due to architecture version. */ | |
f13a99db | 79 | bfd_elf32_arm_set_vfp11_fix (link_info.output_bfd, &link_info); |
c6dd86c6 | 80 | |
a504d23a LA |
81 | /* Choose type of STM32L4XX erratum fix, or warn if specified fix is |
82 | unnecessary due to architecture version. */ | |
83 | bfd_elf32_arm_set_stm32l4xx_fix (link_info.output_bfd, &link_info); | |
84 | ||
48229727 JB |
85 | /* Auto-select Cortex-A8 erratum fix if it wasn't explicitly specified. */ |
86 | bfd_elf32_arm_set_cortex_a8_fix (link_info.output_bfd, &link_info); | |
87 | ||
daa4adae TP |
88 | /* Ensure the output sections of veneers needing a dedicated one is not |
89 | removed. */ | |
90 | bfd_elf32_arm_keep_private_stub_output_sections (&link_info); | |
91 | ||
d504ffc8 DJ |
92 | /* We should be able to set the size of the interworking stub section. We |
93 | can't do it until later if we have dynamic sections, though. */ | |
cbc704f3 | 94 | if (elf_hash_table (&link_info)->dynobj == NULL) |
d504ffc8 DJ |
95 | { |
96 | /* Here we rummage through the found bfds to collect glue information. */ | |
97 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
98 | { | |
c6dd86c6 JB |
99 | /* Initialise mapping tables for code/data. */ |
100 | bfd_elf32_arm_init_maps (is->the_bfd); | |
101 | ||
d504ffc8 | 102 | if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, |
c6dd86c6 | 103 | &link_info) |
a504d23a LA |
104 | || !bfd_elf32_arm_vfp11_erratum_scan (is->the_bfd, &link_info) |
105 | || !bfd_elf32_arm_stm32l4xx_erratum_scan (is->the_bfd, | |
106 | &link_info)) | |
252b5132 RH |
107 | /* xgettext:c-format */ |
108 | einfo (_("Errors encountered processing file %s"), is->filename); | |
d504ffc8 | 109 | } |
3e6b1042 DJ |
110 | |
111 | /* We have seen it all. Allocate it, and carry on. */ | |
112 | bfd_elf32_arm_allocate_interworking_sections (& link_info); | |
d504ffc8 | 113 | } |
252b5132 | 114 | |
063d4ee1 AM |
115 | /* Call the standard elf routine. */ |
116 | gld${EMULATION_NAME}_before_allocation (); | |
252b5132 RH |
117 | } |
118 | ||
906e58ca NC |
119 | /* Fake input file for stubs. */ |
120 | static lang_input_statement_type *stub_file; | |
121 | ||
122 | /* Whether we need to call gldarm_layout_sections_again. */ | |
123 | static int need_laying_out = 0; | |
124 | ||
125 | /* Maximum size of a group of input sections that can be handled by | |
126 | one stub section. A value of +/-1 indicates the bfd back-end | |
127 | should use a suitable default size. */ | |
128 | static bfd_signed_vma group_size = 1; | |
129 | ||
130 | struct hook_stub_info | |
131 | { | |
132 | lang_statement_list_type add; | |
133 | asection *input_section; | |
134 | }; | |
135 | ||
136 | /* Traverse the linker tree to find the spot where the stub goes. */ | |
137 | ||
138 | static bfd_boolean | |
139 | hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) | |
140 | { | |
141 | lang_statement_union_type *l; | |
142 | bfd_boolean ret; | |
143 | ||
144 | for (; (l = *lp) != NULL; lp = &l->header.next) | |
145 | { | |
146 | switch (l->header.type) | |
147 | { | |
148 | case lang_constructors_statement_enum: | |
149 | ret = hook_in_stub (info, &constructor_list.head); | |
150 | if (ret) | |
151 | return ret; | |
152 | break; | |
153 | ||
154 | case lang_output_section_statement_enum: | |
155 | ret = hook_in_stub (info, | |
156 | &l->output_section_statement.children.head); | |
157 | if (ret) | |
158 | return ret; | |
159 | break; | |
160 | ||
161 | case lang_wild_statement_enum: | |
162 | ret = hook_in_stub (info, &l->wild_statement.children.head); | |
163 | if (ret) | |
164 | return ret; | |
165 | break; | |
166 | ||
167 | case lang_group_statement_enum: | |
168 | ret = hook_in_stub (info, &l->group_statement.children.head); | |
169 | if (ret) | |
170 | return ret; | |
171 | break; | |
172 | ||
173 | case lang_input_section_enum: | |
174 | if (l->input_section.section == info->input_section) | |
175 | { | |
176 | /* We've found our section. Insert the stub immediately | |
07d72278 DJ |
177 | after its associated input section. */ |
178 | *(info->add.tail) = l->header.next; | |
179 | l->header.next = info->add.head; | |
906e58ca NC |
180 | return TRUE; |
181 | } | |
182 | break; | |
183 | ||
184 | case lang_data_statement_enum: | |
185 | case lang_reloc_statement_enum: | |
186 | case lang_object_symbols_statement_enum: | |
187 | case lang_output_statement_enum: | |
188 | case lang_target_statement_enum: | |
189 | case lang_input_statement_enum: | |
190 | case lang_assignment_statement_enum: | |
191 | case lang_padding_statement_enum: | |
192 | case lang_address_statement_enum: | |
193 | case lang_fill_statement_enum: | |
194 | break; | |
195 | ||
196 | default: | |
197 | FAIL (); | |
198 | break; | |
199 | } | |
200 | } | |
201 | return FALSE; | |
202 | } | |
203 | ||
204 | ||
205 | /* Call-back for elf32_arm_size_stubs. */ | |
206 | ||
207 | /* Create a new stub section, and arrange for it to be linked | |
07d72278 | 208 | immediately after INPUT_SECTION. */ |
906e58ca NC |
209 | |
210 | static asection * | |
7a89b94e | 211 | elf32_arm_add_stub_section (const char * stub_sec_name, |
6bde4c52 TP |
212 | asection * output_section, |
213 | asection * after_input_section, | |
7a89b94e | 214 | unsigned int alignment_power) |
906e58ca NC |
215 | { |
216 | asection *stub_sec; | |
217 | flagword flags; | |
906e58ca NC |
218 | lang_output_section_statement_type *os; |
219 | struct hook_stub_info info; | |
220 | ||
906e58ca NC |
221 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
222 | | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP); | |
9795b468 AM |
223 | stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd, |
224 | stub_sec_name, flags); | |
225 | if (stub_sec == NULL) | |
906e58ca NC |
226 | goto err_ret; |
227 | ||
7a89b94e | 228 | bfd_set_section_alignment (stub_file->the_bfd, stub_sec, alignment_power); |
906e58ca | 229 | |
24ef1aa7 | 230 | os = lang_output_section_get (output_section); |
906e58ca | 231 | |
6bde4c52 | 232 | info.input_section = after_input_section; |
906e58ca | 233 | lang_list_init (&info.add); |
b9c361e0 | 234 | lang_add_section (&info.add, stub_sec, NULL, os); |
906e58ca NC |
235 | |
236 | if (info.add.head == NULL) | |
237 | goto err_ret; | |
238 | ||
6bde4c52 TP |
239 | if (after_input_section == NULL) |
240 | { | |
241 | lang_statement_union_type **lp = &os->children.head; | |
242 | lang_statement_union_type *l, *lprev = NULL; | |
243 | ||
244 | for (; (l = *lp) != NULL; lp = &l->header.next, lprev = l); | |
245 | ||
246 | if (lprev) | |
247 | lprev->header.next = info.add.head; | |
248 | else | |
249 | os->children.head = info.add.head; | |
250 | ||
251 | return stub_sec; | |
252 | } | |
253 | else | |
254 | { | |
255 | if (hook_in_stub (&info, &os->children.head)) | |
256 | return stub_sec; | |
257 | } | |
906e58ca NC |
258 | |
259 | err_ret: | |
260 | einfo ("%X%P: can not make stub section: %E\n"); | |
261 | return NULL; | |
262 | } | |
263 | ||
264 | /* Another call-back for elf_arm_size_stubs. */ | |
265 | ||
6f798e5c | 266 | static void |
906e58ca NC |
267 | gldarm_layout_sections_again (void) |
268 | { | |
269 | /* If we have changed sizes of the stub sections, then we need | |
270 | to recalculate all the section offsets. This may mean we need to | |
271 | add even more stubs. */ | |
272 | gld${EMULATION_NAME}_map_segments (TRUE); | |
273 | need_laying_out = -1; | |
274 | } | |
275 | ||
276 | static void | |
277 | build_section_lists (lang_statement_union_type *statement) | |
278 | { | |
279 | if (statement->header.type == lang_input_section_enum) | |
280 | { | |
281 | asection *i = statement->input_section.section; | |
282 | ||
dbaa2011 | 283 | if (i->sec_info_type != SEC_INFO_TYPE_JUST_SYMS |
906e58ca NC |
284 | && (i->flags & SEC_EXCLUDE) == 0 |
285 | && i->output_section != NULL | |
286 | && i->output_section->owner == link_info.output_bfd) | |
287 | elf32_arm_next_input_section (& link_info, i); | |
288 | } | |
289 | } | |
290 | ||
2468f9c9 PB |
291 | static int |
292 | compare_output_sec_vma (const void *a, const void *b) | |
293 | { | |
294 | asection *asec = *(asection **) a, *bsec = *(asection **) b; | |
295 | asection *aout = asec->output_section, *bout = bsec->output_section; | |
296 | bfd_vma avma, bvma; | |
e2caaa1f | 297 | |
2468f9c9 PB |
298 | /* If there's no output section for some reason, compare equal. */ |
299 | if (!aout || !bout) | |
300 | return 0; | |
e2caaa1f | 301 | |
2468f9c9 PB |
302 | avma = aout->vma + asec->output_offset; |
303 | bvma = bout->vma + bsec->output_offset; | |
e2caaa1f | 304 | |
2468f9c9 PB |
305 | if (avma > bvma) |
306 | return 1; | |
307 | else if (avma < bvma) | |
308 | return -1; | |
e2caaa1f | 309 | |
2468f9c9 PB |
310 | return 0; |
311 | } | |
312 | ||
906e58ca | 313 | static void |
eaeb0a9d | 314 | gld${EMULATION_NAME}_after_allocation (void) |
6f798e5c | 315 | { |
75938853 AM |
316 | int ret; |
317 | ||
491d01d3 YU |
318 | /* Build a sorted list of input text sections, then use that to process |
319 | the unwind table index. */ | |
320 | unsigned int list_size = 10; | |
321 | asection **sec_list = (asection **) | |
322 | xmalloc (list_size * sizeof (asection *)); | |
323 | unsigned int sec_count = 0; | |
324 | ||
325 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
2468f9c9 | 326 | { |
491d01d3 YU |
327 | bfd *abfd = is->the_bfd; |
328 | asection *sec; | |
e2caaa1f | 329 | |
491d01d3 YU |
330 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
331 | continue; | |
e2caaa1f | 332 | |
491d01d3 YU |
333 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
334 | { | |
335 | asection *out_sec = sec->output_section; | |
336 | ||
337 | if (out_sec | |
338 | && elf_section_data (sec) | |
339 | && elf_section_type (sec) == SHT_PROGBITS | |
340 | && (elf_section_flags (sec) & SHF_EXECINSTR) != 0 | |
341 | && (sec->flags & SEC_EXCLUDE) == 0 | |
342 | && sec->sec_info_type != SEC_INFO_TYPE_JUST_SYMS | |
343 | && out_sec != bfd_abs_section_ptr) | |
2468f9c9 | 344 | { |
491d01d3 | 345 | if (sec_count == list_size) |
2468f9c9 | 346 | { |
491d01d3 YU |
347 | list_size *= 2; |
348 | sec_list = (asection **) | |
349 | xrealloc (sec_list, list_size * sizeof (asection *)); | |
2468f9c9 | 350 | } |
491d01d3 YU |
351 | |
352 | sec_list[sec_count++] = sec; | |
2468f9c9 PB |
353 | } |
354 | } | |
491d01d3 | 355 | } |
e2caaa1f | 356 | |
491d01d3 | 357 | qsort (sec_list, sec_count, sizeof (asection *), &compare_output_sec_vma); |
e2caaa1f | 358 | |
491d01d3 YU |
359 | if (elf32_arm_fix_exidx_coverage (sec_list, sec_count, &link_info, |
360 | merge_exidx_entries)) | |
361 | need_laying_out = 1; | |
e2caaa1f | 362 | |
491d01d3 | 363 | free (sec_list); |
6f798e5c | 364 | |
906e58ca NC |
365 | /* bfd_elf32_discard_info just plays with debugging sections, |
366 | ie. doesn't affect any code, so we can delay resizing the | |
367 | sections. It's likely we'll resize everything in the process of | |
368 | adding stubs. */ | |
75938853 AM |
369 | ret = bfd_elf_discard_info (link_info.output_bfd, & link_info); |
370 | if (ret < 0) | |
371 | { | |
372 | einfo ("%X%P: .eh_frame/.stab edit: %E\n"); | |
373 | return; | |
374 | } | |
375 | else if (ret > 0) | |
906e58ca NC |
376 | need_laying_out = 1; |
377 | ||
378 | /* If generating a relocatable output file, then we don't | |
379 | have to examine the relocs. */ | |
0e1862bb | 380 | if (stub_file != NULL && !bfd_link_relocatable (&link_info)) |
906e58ca | 381 | { |
75938853 | 382 | ret = elf32_arm_setup_section_lists (link_info.output_bfd, &link_info); |
906e58ca NC |
383 | if (ret != 0) |
384 | { | |
385 | if (ret < 0) | |
386 | { | |
1a51c1a4 | 387 | einfo ("%X%P: could not compute sections lists for stub generation: %E\n"); |
906e58ca NC |
388 | return; |
389 | } | |
390 | ||
391 | lang_for_each_statement (build_section_lists); | |
392 | ||
393 | /* Call into the BFD backend to do the real work. */ | |
394 | if (! elf32_arm_size_stubs (link_info.output_bfd, | |
395 | stub_file->the_bfd, | |
396 | & link_info, | |
397 | group_size, | |
398 | & elf32_arm_add_stub_section, | |
399 | & gldarm_layout_sections_again)) | |
400 | { | |
1a51c1a4 | 401 | einfo ("%X%P: cannot size stub section: %E\n"); |
906e58ca NC |
402 | return; |
403 | } | |
404 | } | |
405 | } | |
406 | ||
407 | if (need_laying_out != -1) | |
408 | gld${EMULATION_NAME}_map_segments (need_laying_out); | |
eaeb0a9d AM |
409 | } |
410 | ||
411 | static void | |
412 | gld${EMULATION_NAME}_finish (void) | |
413 | { | |
414 | struct bfd_link_hash_entry * h; | |
415 | ||
416 | { | |
417 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
418 | { | |
419 | /* Figure out where VFP11 erratum veneers (and the labels returning | |
420 | from same) have been placed. */ | |
421 | bfd_elf32_arm_vfp11_fix_veneer_locations (is->the_bfd, &link_info); | |
a504d23a LA |
422 | |
423 | /* Figure out where STM32L4XX erratum veneers (and the labels returning | |
424 | from them) have been placed. */ | |
425 | bfd_elf32_arm_stm32l4xx_fix_veneer_locations (is->the_bfd, &link_info); | |
eaeb0a9d AM |
426 | } |
427 | } | |
906e58ca | 428 | |
0e1862bb | 429 | if (!bfd_link_relocatable (&link_info)) |
906e58ca NC |
430 | { |
431 | /* Now build the linker stubs. */ | |
432 | if (stub_file->the_bfd->sections != NULL) | |
433 | { | |
434 | if (! elf32_arm_build_stubs (& link_info)) | |
435 | einfo ("%X%P: can not build stubs: %E\n"); | |
436 | } | |
437 | } | |
438 | ||
439 | finish_default (); | |
c56feb2b | 440 | |
1d022697 PB |
441 | if (thumb_entry_symbol) |
442 | { | |
443 | h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, | |
444 | FALSE, FALSE, TRUE); | |
445 | } | |
446 | else | |
447 | { | |
448 | struct elf_link_hash_entry * eh; | |
449 | ||
450 | if (!entry_symbol.name) | |
451 | return; | |
452 | ||
453 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name, | |
454 | FALSE, FALSE, TRUE); | |
455 | eh = (struct elf_link_hash_entry *)h; | |
39d911fc TP |
456 | if (!h || ARM_GET_SYM_BRANCH_TYPE (eh->target_internal) |
457 | != ST_BRANCH_TO_THUMB) | |
1d022697 PB |
458 | return; |
459 | } | |
0c7a8e5a | 460 | |
6f798e5c NC |
461 | |
462 | if (h != (struct bfd_link_hash_entry *) NULL | |
463 | && (h->type == bfd_link_hash_defined | |
464 | || h->type == bfd_link_hash_defweak) | |
465 | && h->u.def.section->output_section != NULL) | |
466 | { | |
467 | static char buffer[32]; | |
88f7bcd5 | 468 | bfd_vma val; |
0c7a8e5a | 469 | |
88f7bcd5 NC |
470 | /* Special procesing is required for a Thumb entry symbol. The |
471 | bottom bit of its address must be set. */ | |
472 | val = (h->u.def.value | |
f13a99db | 473 | + bfd_get_section_vma (link_info.output_bfd, |
88f7bcd5 NC |
474 | h->u.def.section->output_section) |
475 | + h->u.def.section->output_offset); | |
0c7a8e5a | 476 | |
88f7bcd5 | 477 | val |= 1; |
6f798e5c | 478 | |
88f7bcd5 | 479 | /* Now convert this value into a string and store it in entry_symbol |
0c7a8e5a | 480 | where the lang_finish() function will pick it up. */ |
88f7bcd5 NC |
481 | buffer[0] = '0'; |
482 | buffer[1] = 'x'; | |
0c7a8e5a | 483 | |
88f7bcd5 | 484 | sprintf_vma (buffer + 2, val); |
6f798e5c | 485 | |
1d022697 PB |
486 | if (thumb_entry_symbol != NULL && entry_symbol.name != NULL |
487 | && entry_from_cmdline) | |
88f7bcd5 NC |
488 | einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), |
489 | thumb_entry_symbol, entry_symbol.name); | |
490 | entry_symbol.name = buffer; | |
6f798e5c | 491 | } |
88f7bcd5 | 492 | else |
6241fe3d | 493 | einfo (_("%P: warning: cannot find thumb start symbol %s\n"), |
88f7bcd5 | 494 | thumb_entry_symbol); |
6f798e5c NC |
495 | } |
496 | ||
bf21ed78 | 497 | /* This is a convenient point to tell BFD about target specific flags. |
3674e28a PB |
498 | After the output has been created, but before inputs are read. */ |
499 | static void | |
500 | arm_elf_create_output_section_statements (void) | |
501 | { | |
b8976b05 NC |
502 | if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL) |
503 | { | |
504 | /* The arm backend needs special fields in the output hash structure. | |
505 | These will only be created if the output format is an arm format, | |
506 | hence we do not support linking and changing output formats at the | |
507 | same time. Use a link followed by objcopy to change output formats. */ | |
508 | einfo ("%F%X%P: error: Cannot change output format whilst linking ARM binaries.\n"); | |
509 | return; | |
510 | } | |
511 | ||
f13a99db AM |
512 | bfd_elf32_arm_set_target_relocs (link_info.output_bfd, &link_info, |
513 | target1_is_rel, | |
bf21ed78 | 514 | target2_type, fix_v4bx, use_blx, |
a504d23a LA |
515 | vfp11_denorm_fix, stm32l4xx_fix, |
516 | no_enum_size_warning, | |
a9dc9481 | 517 | no_wchar_size_warning, |
e2caaa1f | 518 | pic_veneer, fix_cortex_a8, |
54ddd295 | 519 | fix_arm1176, cmse_implib); |
906e58ca NC |
520 | |
521 | stub_file = lang_add_input_file ("linker stubs", | |
522 | lang_input_file_is_fake_enum, | |
523 | NULL); | |
524 | stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd); | |
525 | if (stub_file->the_bfd == NULL | |
526 | || ! bfd_set_arch_mach (stub_file->the_bfd, | |
527 | bfd_get_arch (link_info.output_bfd), | |
528 | bfd_get_mach (link_info.output_bfd))) | |
529 | { | |
530 | einfo ("%X%P: can not create BFD %E\n"); | |
531 | return; | |
532 | } | |
e2caaa1f | 533 | |
906e58ca NC |
534 | stub_file->the_bfd->flags |= BFD_LINKER_CREATED; |
535 | ldlang_add_file (stub_file); | |
3e6b1042 DJ |
536 | |
537 | /* Also use the stub file for stubs placed in a single output section. */ | |
538 | bfd_elf32_arm_add_glue_sections_to_bfd (stub_file->the_bfd, &link_info); | |
539 | bfd_elf32_arm_get_bfd_for_interworking (stub_file->the_bfd, &link_info); | |
906e58ca NC |
540 | } |
541 | ||
542 | /* Avoid processing the fake stub_file in vercheck, stat_needed and | |
543 | check_needed routines. */ | |
544 | ||
545 | static void (*real_func) (lang_input_statement_type *); | |
546 | ||
547 | static void arm_for_each_input_file_wrapper (lang_input_statement_type *l) | |
548 | { | |
549 | if (l != stub_file) | |
550 | (*real_func) (l); | |
3674e28a PB |
551 | } |
552 | ||
906e58ca NC |
553 | static void |
554 | arm_lang_for_each_input_file (void (*func) (lang_input_statement_type *)) | |
555 | { | |
556 | real_func = func; | |
557 | lang_for_each_input_file (&arm_for_each_input_file_wrapper); | |
558 | } | |
559 | ||
560 | #define lang_for_each_input_file arm_lang_for_each_input_file | |
561 | ||
252b5132 RH |
562 | EOF |
563 | ||
41392f03 AM |
564 | # Define some shell vars to insert bits of code into the standard elf |
565 | # parse_args and list_options functions. | |
566 | # | |
567 | PARSE_AND_LIST_PROLOGUE=' | |
568 | #define OPTION_THUMB_ENTRY 301 | |
e489d0ae | 569 | #define OPTION_BE8 302 |
9c504268 PB |
570 | #define OPTION_TARGET1_REL 303 |
571 | #define OPTION_TARGET1_ABS 304 | |
3674e28a | 572 | #define OPTION_TARGET2 305 |
33bfe774 JB |
573 | #define OPTION_FIX_V4BX 306 |
574 | #define OPTION_USE_BLX 307 | |
c6dd86c6 | 575 | #define OPTION_VFP11_DENORM_FIX 308 |
bf21ed78 | 576 | #define OPTION_NO_ENUM_SIZE_WARNING 309 |
27e55c4d | 577 | #define OPTION_PIC_VENEER 310 |
845b51d6 | 578 | #define OPTION_FIX_V4BX_INTERWORKING 311 |
8c45e5ec | 579 | #define OPTION_STUBGROUP_SIZE 312 |
a9dc9481 | 580 | #define OPTION_NO_WCHAR_SIZE_WARNING 313 |
48229727 JB |
581 | #define OPTION_FIX_CORTEX_A8 314 |
582 | #define OPTION_NO_FIX_CORTEX_A8 315 | |
8c45e5ec | 583 | #define OPTION_NO_MERGE_EXIDX_ENTRIES 316 |
2de70689 MGD |
584 | #define OPTION_FIX_ARM1176 317 |
585 | #define OPTION_NO_FIX_ARM1176 318 | |
8c45e5ec | 586 | #define OPTION_LONG_PLT 319 |
a504d23a | 587 | #define OPTION_STM32L4XX_FIX 320 |
54ddd295 | 588 | #define OPTION_CMSE_IMPLIB 321 |
41392f03 | 589 | ' |
252b5132 | 590 | |
ef5bdbd1 | 591 | PARSE_AND_LIST_SHORTOPTS=p |
252b5132 | 592 | |
41392f03 AM |
593 | PARSE_AND_LIST_LONGOPTS=' |
594 | { "no-pipeline-knowledge", no_argument, NULL, '\'p\''}, | |
595 | { "thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, | |
e489d0ae | 596 | { "be8", no_argument, NULL, OPTION_BE8}, |
9c504268 PB |
597 | { "target1-rel", no_argument, NULL, OPTION_TARGET1_REL}, |
598 | { "target1-abs", no_argument, NULL, OPTION_TARGET1_ABS}, | |
3674e28a | 599 | { "target2", required_argument, NULL, OPTION_TARGET2}, |
319850b4 | 600 | { "fix-v4bx", no_argument, NULL, OPTION_FIX_V4BX}, |
845b51d6 | 601 | { "fix-v4bx-interworking", no_argument, NULL, OPTION_FIX_V4BX_INTERWORKING}, |
33bfe774 | 602 | { "use-blx", no_argument, NULL, OPTION_USE_BLX}, |
c6dd86c6 | 603 | { "vfp11-denorm-fix", required_argument, NULL, OPTION_VFP11_DENORM_FIX}, |
a504d23a | 604 | { "fix-stm32l4xx-629360", optional_argument, NULL, OPTION_STM32L4XX_FIX}, |
bf21ed78 | 605 | { "no-enum-size-warning", no_argument, NULL, OPTION_NO_ENUM_SIZE_WARNING}, |
27e55c4d | 606 | { "pic-veneer", no_argument, NULL, OPTION_PIC_VENEER}, |
906e58ca | 607 | { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, |
a9dc9481 | 608 | { "no-wchar-size-warning", no_argument, NULL, OPTION_NO_WCHAR_SIZE_WARNING}, |
48229727 JB |
609 | { "fix-cortex-a8", no_argument, NULL, OPTION_FIX_CORTEX_A8 }, |
610 | { "no-fix-cortex-a8", no_argument, NULL, OPTION_NO_FIX_CORTEX_A8 }, | |
85fdf906 | 611 | { "no-merge-exidx-entries", no_argument, NULL, OPTION_NO_MERGE_EXIDX_ENTRIES }, |
2de70689 MGD |
612 | { "fix-arm1176", no_argument, NULL, OPTION_FIX_ARM1176 }, |
613 | { "no-fix-arm1176", no_argument, NULL, OPTION_NO_FIX_ARM1176 }, | |
1db37fe6 | 614 | { "long-plt", no_argument, NULL, OPTION_LONG_PLT }, |
54ddd295 | 615 | { "cmse-implib", no_argument, NULL, OPTION_CMSE_IMPLIB }, |
41392f03 | 616 | ' |
252b5132 | 617 | |
41392f03 | 618 | PARSE_AND_LIST_OPTIONS=' |
442996ee | 619 | fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n")); |
4a977a31 | 620 | fprintf (file, _(" --be8 Output BE8 format image\n")); |
f8266dc4 NC |
621 | fprintf (file, _(" --target1-rel Interpret R_ARM_TARGET1 as R_ARM_REL32\n")); |
622 | fprintf (file, _(" --target1-abs Interpret R_ARM_TARGET1 as R_ARM_ABS32\n")); | |
442996ee AM |
623 | fprintf (file, _(" --target2=<type> Specify definition of R_ARM_TARGET2\n")); |
624 | fprintf (file, _(" --fix-v4bx Rewrite BX rn as MOV pc, rn for ARMv4\n")); | |
845b51d6 | 625 | fprintf (file, _(" --fix-v4bx-interworking Rewrite BX rn branch to ARMv4 interworking veneer\n")); |
442996ee AM |
626 | fprintf (file, _(" --use-blx Enable use of BLX instructions\n")); |
627 | fprintf (file, _(" --vfp11-denorm-fix Specify how to fix VFP11 denorm erratum\n")); | |
a504d23a | 628 | fprintf (file, _(" --fix-stm32l4xx-629360 Specify how to fix STM32L4XX 629360 erratum\n")); |
893dcb0e | 629 | fprintf (file, _(" --no-enum-size-warning Don'\''t warn about objects with incompatible\n" |
442996ee | 630 | " enum sizes\n")); |
a272e28c | 631 | fprintf (file, _(" --no-wchar-size-warning Don'\''t warn about objects with incompatible\n" |
a9dc9481 | 632 | " wchar_t sizes\n")); |
442996ee | 633 | fprintf (file, _(" --pic-veneer Always generate PIC interworking veneers\n")); |
1db37fe6 YG |
634 | fprintf (file, _(" --long-plt Generate long .plt entries\n" |
635 | " to handle large .plt/.got displacements\n")); | |
54ddd295 TP |
636 | fprintf (file, _(" --cmse-implib Make import library to be a secure gateway import\n" |
637 | " library as per ARMv8-M Security Extensions\n")); | |
906e58ca | 638 | fprintf (file, _("\ |
a272e28c NC |
639 | --stub-group-size=N Maximum size of a group of input sections that\n\ |
640 | can be handled by one stub section. A negative\n\ | |
641 | value locates all stubs after their branches\n\ | |
642 | (with a group size of -N), while a positive\n\ | |
643 | value allows two groups of input sections, one\n\ | |
644 | before, and one after each stub section.\n\ | |
645 | Values of +/-1 indicate the linker should\n\ | |
646 | choose suitable defaults.\n")); | |
48229727 | 647 | fprintf (file, _(" --[no-]fix-cortex-a8 Disable/enable Cortex-A8 Thumb-2 branch erratum fix\n")); |
85fdf906 | 648 | fprintf (file, _(" --no-merge-exidx-entries Disable merging exidx entries\n")); |
2de70689 | 649 | fprintf (file, _(" --[no-]fix-arm1176 Disable/enable ARM1176 BLX immediate erratum fix\n")); |
41392f03 | 650 | ' |
252b5132 | 651 | |
41392f03 AM |
652 | PARSE_AND_LIST_ARGS_CASES=' |
653 | case '\'p\'': | |
dea514f5 | 654 | /* Only here for backwards compatibility. */ |
41392f03 | 655 | break; |
252b5132 | 656 | |
41392f03 AM |
657 | case OPTION_THUMB_ENTRY: |
658 | thumb_entry_symbol = optarg; | |
659 | break; | |
e489d0ae PB |
660 | |
661 | case OPTION_BE8: | |
662 | byteswap_code = 1; | |
663 | break; | |
9c504268 PB |
664 | |
665 | case OPTION_TARGET1_REL: | |
666 | target1_is_rel = 1; | |
667 | break; | |
668 | ||
669 | case OPTION_TARGET1_ABS: | |
670 | target1_is_rel = 0; | |
671 | break; | |
3674e28a PB |
672 | |
673 | case OPTION_TARGET2: | |
674 | target2_type = optarg; | |
675 | break; | |
319850b4 JB |
676 | |
677 | case OPTION_FIX_V4BX: | |
678 | fix_v4bx = 1; | |
679 | break; | |
33bfe774 | 680 | |
845b51d6 PB |
681 | case OPTION_FIX_V4BX_INTERWORKING: |
682 | fix_v4bx = 2; | |
683 | break; | |
684 | ||
33bfe774 JB |
685 | case OPTION_USE_BLX: |
686 | use_blx = 1; | |
687 | break; | |
92b93329 | 688 | |
c6dd86c6 JB |
689 | case OPTION_VFP11_DENORM_FIX: |
690 | if (strcmp (optarg, "none") == 0) | |
691 | vfp11_denorm_fix = BFD_ARM_VFP11_FIX_NONE; | |
692 | else if (strcmp (optarg, "scalar") == 0) | |
693 | vfp11_denorm_fix = BFD_ARM_VFP11_FIX_SCALAR; | |
694 | else if (strcmp (optarg, "vector") == 0) | |
695 | vfp11_denorm_fix = BFD_ARM_VFP11_FIX_VECTOR; | |
696 | else | |
697 | einfo (_("Unrecognized VFP11 fix type '\''%s'\''.\n"), optarg); | |
698 | break; | |
bf21ed78 | 699 | |
a504d23a LA |
700 | case OPTION_STM32L4XX_FIX: |
701 | if (!optarg) | |
702 | stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT; | |
703 | else if (strcmp (optarg, "none") == 0) | |
704 | stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE; | |
705 | else if (strcmp (optarg, "default") == 0) | |
706 | stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT; | |
707 | else if (strcmp (optarg, "all") == 0) | |
708 | stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_ALL; | |
709 | else | |
710 | einfo (_("Unrecognized STM32L4XX fix type '\''%s'\''.\n"), optarg); | |
711 | break; | |
712 | ||
bf21ed78 MS |
713 | case OPTION_NO_ENUM_SIZE_WARNING: |
714 | no_enum_size_warning = 1; | |
715 | break; | |
27e55c4d | 716 | |
a9dc9481 JM |
717 | case OPTION_NO_WCHAR_SIZE_WARNING: |
718 | no_wchar_size_warning = 1; | |
719 | break; | |
720 | ||
27e55c4d PB |
721 | case OPTION_PIC_VENEER: |
722 | pic_veneer = 1; | |
723 | break; | |
906e58ca NC |
724 | |
725 | case OPTION_STUBGROUP_SIZE: | |
726 | { | |
727 | const char *end; | |
728 | ||
729 | group_size = bfd_scan_vma (optarg, &end, 0); | |
730 | if (*end) | |
731 | einfo (_("%P%F: invalid number `%s'\''\n"), optarg); | |
732 | } | |
733 | break; | |
48229727 JB |
734 | |
735 | case OPTION_FIX_CORTEX_A8: | |
736 | fix_cortex_a8 = 1; | |
737 | break; | |
738 | ||
739 | case OPTION_NO_FIX_CORTEX_A8: | |
740 | fix_cortex_a8 = 0; | |
741 | break; | |
85fdf906 AH |
742 | |
743 | case OPTION_NO_MERGE_EXIDX_ENTRIES: | |
744 | merge_exidx_entries = 0; | |
2de70689 | 745 | break; |
85fdf906 | 746 | |
2de70689 MGD |
747 | case OPTION_FIX_ARM1176: |
748 | fix_arm1176 = 1; | |
749 | break; | |
750 | ||
751 | case OPTION_NO_FIX_ARM1176: | |
752 | fix_arm1176 = 0; | |
753 | break; | |
1db37fe6 YG |
754 | |
755 | case OPTION_LONG_PLT: | |
756 | bfd_elf32_arm_use_long_plt (); | |
757 | break; | |
54ddd295 TP |
758 | |
759 | case OPTION_CMSE_IMPLIB: | |
760 | cmse_implib = 1; | |
761 | break; | |
41392f03 | 762 | ' |
252b5132 | 763 | |
3e6b1042 | 764 | # We have our own before_allocation etc. functions, but they call |
41392f03 | 765 | # the standard routines, so give them a different name. |
41392f03 | 766 | LDEMUL_BEFORE_ALLOCATION=arm_elf_before_allocation |
eaeb0a9d | 767 | LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
3674e28a | 768 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=arm_elf_create_output_section_statements |
252b5132 | 769 | |
41392f03 AM |
770 | # Replace the elf before_parse function with our own. |
771 | LDEMUL_BEFORE_PARSE=gld"${EMULATION_NAME}"_before_parse | |
3940d2c3 | 772 | LDEMUL_SET_SYMBOLS=gld"${EMULATION_NAME}"_set_symbols |
252b5132 | 773 | |
41392f03 | 774 | # Call the extra arm-elf function |
906e58ca | 775 | LDEMUL_FINISH=gld${EMULATION_NAME}_finish |