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