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efaa65c9 CM |
1 | /* 32-bit ELF support for ARM |
2 | Copyright 1993, 1995, 1998 Free Software Foundation, Inc. | |
3 | ||
2c3c46ad | 4 | This file is part of BFD, the Binary File Descriptor library. |
efaa65c9 | 5 | |
2c3c46ad CM |
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 | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
efaa65c9 | 10 | |
2c3c46ad CM |
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. | |
efaa65c9 | 15 | |
2c3c46ad CM |
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 | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
efaa65c9 CM |
19 | |
20 | #include "bfd.h" | |
21 | #include "sysdep.h" | |
22 | #include "libbfd.h" | |
23 | #include "elf-bfd.h" | |
24 | ||
25 | #include "elf/arm.h" | |
26 | ||
2c3c46ad CM |
27 | typedef unsigned long int insn32; |
28 | typedef unsigned short int insn16; | |
29 | ||
efaa65c9 | 30 | static reloc_howto_type *elf32_arm_reloc_type_lookup |
2c3c46ad | 31 | PARAMS ((bfd * abfd, bfd_reloc_code_real_type code)); |
efaa65c9 CM |
32 | static void elf32_arm_info_to_howto |
33 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); | |
0e7361bc NC |
34 | static boolean elf32_arm_set_private_flags |
35 | PARAMS ((bfd *, flagword)); | |
36 | static boolean elf32_arm_copy_private_bfd_data | |
37 | PARAMS ((bfd *, bfd *)); | |
38 | static boolean elf32_arm_merge_private_bfd_data | |
39 | PARAMS ((bfd *, bfd *)); | |
40 | static boolean elf32_arm_print_private_bfd_data | |
41 | PARAMS ((bfd *, PTR)); | |
bb3b4377 | 42 | static int elf32_arm_get_symbol_type |
948beb4a | 43 | PARAMS (( Elf_Internal_Sym *, int)); |
2c3c46ad CM |
44 | static struct bfd_link_hash_table *elf32_arm_link_hash_table_create |
45 | PARAMS ((bfd *)); | |
46 | ||
47 | ||
48 | static insn32 insert_thumb_branch | |
49 | PARAMS ((insn32, int)); | |
50 | static struct elf_link_hash_entry *find_thumb_glue | |
51 | PARAMS ((struct bfd_link_info *, CONST char *, bfd *)); | |
52 | static struct elf_link_hash_entry *find_arm_glue | |
53 | PARAMS ((struct bfd_link_info *, CONST char *, bfd *)); | |
54 | static void record_arm_to_thumb_glue | |
55 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
56 | static void record_thumb_to_arm_glue | |
57 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
58 | ||
59 | /* The linker script knows the section names for placement. | |
60 | The entry_names are used to do simple name mangling on the stubs. | |
61 | Given a function name, and its type, the stub can be found. The | |
62 | name can be changed. The only requirement is the %s be present. | |
63 | */ | |
64 | ||
65 | #define INTERWORK_FLAG( abfd ) (elf_elfheader (abfd)->e_flags & EF_INTERWORK) | |
66 | ||
67 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" | |
68 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
69 | ||
70 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
71 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
72 | ||
73 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
74 | #define elf32_arm_hash_table(info) \ | |
75 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) | |
76 | ||
77 | /* ARM ELF linker hash table */ | |
78 | struct elf32_arm_link_hash_table | |
79 | { | |
80 | /* The main hash table. */ | |
81 | struct elf_link_hash_table root; | |
82 | ||
83 | /* The size in bytes of the section containg the Thumb-to-ARM glue. */ | |
84 | long int thumb_glue_size; | |
85 | ||
86 | /* The size in bytes of the section containg the ARM-to-Thumb glue. */ | |
87 | long int arm_glue_size; | |
88 | ||
89 | /* An arbitary input BFD chosen to hold the glue sections. */ | |
90 | bfd *bfd_of_glue_owner; | |
91 | ||
92 | }; | |
93 | ||
94 | ||
95 | ||
96 | /* Create an ARM elf linker hash table */ | |
97 | ||
98 | static struct bfd_link_hash_table * | |
99 | elf32_arm_link_hash_table_create (abfd) | |
100 | bfd *abfd; | |
101 | { | |
102 | struct elf32_arm_link_hash_table *ret; | |
103 | ||
104 | ret = ((struct elf32_arm_link_hash_table *) | |
105 | bfd_alloc (abfd, sizeof (struct elf32_arm_link_hash_table))); | |
106 | if (ret == (struct elf32_arm_link_hash_table *) NULL) | |
107 | return NULL; | |
108 | ||
109 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
110 | _bfd_elf_link_hash_newfunc)) | |
111 | { | |
112 | bfd_release (abfd, ret); | |
113 | return NULL; | |
114 | } | |
115 | ||
116 | ret->thumb_glue_size = 0; | |
117 | ret->arm_glue_size = 0; | |
118 | ret->bfd_of_glue_owner = NULL; | |
119 | ||
120 | return &ret->root.root; | |
121 | } | |
122 | ||
123 | static struct elf_link_hash_entry * | |
124 | find_thumb_glue (link_info, name, input_bfd) | |
125 | struct bfd_link_info *link_info; | |
126 | CONST char *name; | |
127 | bfd *input_bfd; | |
128 | { | |
129 | char *tmp_name; | |
130 | struct elf_link_hash_entry *hash; | |
131 | struct elf32_arm_link_hash_table *hash_table; | |
132 | ||
133 | /* We need a pointer to the armelf specific hash table. */ | |
134 | hash_table = elf32_arm_hash_table (link_info); | |
135 | ||
136 | ||
137 | tmp_name = ((char *) | |
138 | bfd_malloc (strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1)); | |
139 | ||
140 | BFD_ASSERT (tmp_name); | |
141 | ||
142 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
143 | ||
144 | hash = elf_link_hash_lookup | |
145 | (&(hash_table)->root, tmp_name, false, false, true); | |
146 | ||
147 | if (hash == NULL) | |
148 | /* xgettext:c-format */ | |
149 | _bfd_error_handler (_ ("%s: unable to find THUMB glue '%s' for `%s'"), | |
150 | bfd_get_filename (input_bfd), tmp_name, name); | |
151 | ||
152 | free (tmp_name); | |
153 | ||
154 | return hash; | |
155 | } | |
156 | ||
157 | static struct elf_link_hash_entry * | |
158 | find_arm_glue (link_info, name, input_bfd) | |
159 | struct bfd_link_info *link_info; | |
160 | CONST char *name; | |
161 | bfd *input_bfd; | |
162 | { | |
163 | char *tmp_name; | |
164 | struct elf_link_hash_entry *myh; | |
165 | struct elf32_arm_link_hash_table *hash_table; | |
166 | ||
167 | /* We need a pointer to the elfarm specific hash table. */ | |
168 | hash_table = elf32_arm_hash_table (link_info); | |
169 | ||
170 | tmp_name = ((char *) | |
171 | bfd_malloc (strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1)); | |
172 | ||
173 | BFD_ASSERT (tmp_name); | |
174 | ||
175 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
176 | ||
177 | myh = elf_link_hash_lookup | |
178 | (&(hash_table)->root, tmp_name, false, false, true); | |
179 | ||
180 | if (myh == NULL) | |
181 | /* xgettext:c-format */ | |
182 | _bfd_error_handler (_ ("%s: unable to find ARM glue '%s' for `%s'"), | |
183 | bfd_get_filename (input_bfd), tmp_name, name); | |
184 | ||
185 | free (tmp_name); | |
186 | ||
187 | return myh; | |
188 | } | |
189 | ||
190 | /* | |
191 | ARM->Thumb glue: | |
192 | ||
193 | .arm | |
194 | __func_from_arm: | |
195 | ldr r12, __func_addr | |
196 | bx r12 | |
197 | __func_addr: | |
198 | .word func @ behave as if you saw a ARM_32 reloc | |
199 | */ | |
200 | ||
201 | #define ARM2THUMB_GLUE_SIZE 12 | |
202 | static const insn32 a2t1_ldr_insn = 0xe59fc000; | |
203 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
204 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
205 | ||
206 | /* | |
207 | Thumb->ARM: Thumb->(non-interworking aware) ARM | |
208 | ||
209 | .thumb .thumb | |
210 | .align 2 .align 2 | |
211 | __func_from_thumb: __func_from_thumb: | |
212 | bx pc push {r6, lr} | |
213 | nop ldr r6, __func_addr | |
214 | .arm mov lr, pc | |
215 | __func_change_to_arm: bx r6 | |
216 | b func .arm | |
217 | __func_back_to_thumb: | |
218 | ldmia r13! {r6, lr} | |
219 | bx lr | |
220 | __func_addr: | |
221 | .word func | |
222 | */ | |
223 | ||
224 | #define THUMB2ARM_GLUE_SIZE 8 | |
225 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
226 | static const insn16 t2a2_noop_insn = 0x46c0; | |
227 | static const insn32 t2a3_b_insn = 0xea000000; | |
228 | ||
229 | static const insn16 t2a1_push_insn = 0xb540; | |
230 | static const insn16 t2a2_ldr_insn = 0x4e03; | |
231 | static const insn16 t2a3_mov_insn = 0x46fe; | |
232 | static const insn16 t2a4_bx_insn = 0x4730; | |
233 | static const insn32 t2a5_pop_insn = 0xe8bd4040; | |
234 | static const insn32 t2a6_bx_insn = 0xe12fff1e; | |
235 | ||
236 | boolean | |
237 | bfd_elf32_arm_allocate_interworking_sections (info) | |
238 | struct bfd_link_info *info; | |
239 | { | |
240 | asection *s; | |
241 | bfd_byte *foo; | |
242 | struct elf32_arm_link_hash_table *globals; | |
243 | ||
244 | globals = elf32_arm_hash_table (info); | |
245 | ||
246 | BFD_ASSERT (globals != NULL); | |
247 | ||
248 | if (globals->arm_glue_size != 0) | |
249 | { | |
250 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
251 | ||
252 | s = bfd_get_section_by_name | |
253 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
254 | ||
255 | BFD_ASSERT (s != NULL); | |
256 | ||
257 | foo = (bfd_byte *) bfd_alloc | |
258 | (globals->bfd_of_glue_owner, globals->arm_glue_size); | |
259 | ||
260 | s->_raw_size = s->_cooked_size = globals->arm_glue_size; | |
261 | s->contents = foo; | |
262 | } | |
263 | ||
264 | if (globals->thumb_glue_size != 0) | |
265 | { | |
266 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
267 | ||
268 | s = bfd_get_section_by_name | |
269 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
270 | ||
271 | BFD_ASSERT (s != NULL); | |
272 | ||
273 | foo = (bfd_byte *) bfd_alloc | |
274 | (globals->bfd_of_glue_owner, globals->thumb_glue_size); | |
275 | ||
276 | s->_raw_size = s->_cooked_size = globals->thumb_glue_size; | |
277 | s->contents = foo; | |
278 | } | |
279 | ||
280 | return true; | |
281 | } | |
282 | ||
283 | static void | |
284 | record_arm_to_thumb_glue (link_info, h) | |
285 | struct bfd_link_info *link_info; | |
286 | struct elf_link_hash_entry *h; | |
287 | { | |
288 | const char *name = h->root.root.string; | |
289 | register asection *s; | |
290 | char *tmp_name; | |
291 | struct elf_link_hash_entry *myh; | |
292 | struct elf32_arm_link_hash_table *globals; | |
293 | ||
294 | globals = elf32_arm_hash_table (link_info); | |
295 | ||
296 | BFD_ASSERT (globals != NULL); | |
297 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
298 | ||
299 | s = bfd_get_section_by_name | |
300 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
301 | ||
302 | ||
303 | BFD_ASSERT (s != NULL); | |
304 | ||
305 | tmp_name = ((char *) | |
306 | bfd_malloc (strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1)); | |
307 | ||
308 | BFD_ASSERT (tmp_name); | |
309 | ||
310 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
311 | ||
312 | myh = elf_link_hash_lookup | |
313 | (&(globals)->root, tmp_name, false, false, true); | |
314 | ||
315 | if (myh != NULL) | |
316 | { | |
317 | free (tmp_name); | |
318 | return; /* we've already seen this guy */ | |
319 | } | |
320 | ||
321 | /* The only trick here is using hash_table->arm_glue_size as the value. Even | |
322 | though the section isn't allocated yet, this is where we will be putting | |
323 | it. */ | |
324 | ||
325 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, tmp_name, | |
326 | BSF_GLOBAL, | |
327 | s, globals->arm_glue_size + 1, | |
328 | NULL, true, false, | |
329 | (struct bfd_link_hash_entry **) &myh); | |
330 | ||
331 | free (tmp_name); | |
332 | ||
333 | globals->arm_glue_size += ARM2THUMB_GLUE_SIZE; | |
334 | ||
335 | return; | |
336 | } | |
337 | ||
338 | static void | |
339 | record_thumb_to_arm_glue (link_info, h) | |
340 | struct bfd_link_info *link_info; | |
341 | struct elf_link_hash_entry *h; | |
342 | { | |
343 | const char *name = h->root.root.string; | |
344 | register asection *s; | |
345 | char *tmp_name; | |
346 | struct elf_link_hash_entry *myh; | |
347 | struct elf32_arm_link_hash_table *hash_table; | |
bb3b4377 | 348 | char bind; |
2c3c46ad CM |
349 | |
350 | hash_table = elf32_arm_hash_table (link_info); | |
351 | ||
352 | BFD_ASSERT (hash_table != NULL); | |
353 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
354 | ||
355 | s = bfd_get_section_by_name | |
356 | (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
357 | ||
358 | BFD_ASSERT (s != NULL); | |
359 | ||
360 | tmp_name = (char *) bfd_malloc (strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
361 | ||
362 | BFD_ASSERT (tmp_name); | |
363 | ||
364 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
365 | ||
366 | myh = elf_link_hash_lookup | |
367 | (&(hash_table)->root, tmp_name, false, false, true); | |
368 | ||
369 | if (myh != NULL) | |
370 | { | |
371 | free (tmp_name); | |
372 | return; /* we've already seen this guy */ | |
373 | } | |
374 | ||
375 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, tmp_name, | |
376 | BSF_GLOBAL, s, hash_table->thumb_glue_size + 1, | |
377 | NULL, true, false, | |
378 | (struct bfd_link_hash_entry **) &myh); | |
379 | ||
380 | /* If we mark it 'thumb', the disassembler will do a better job. */ | |
bb3b4377 CM |
381 | bind = ELF_ST_BIND (myh->type); |
382 | myh->type = ELF_ST_INFO (bind, STT_ARM_TFUNC); | |
2c3c46ad CM |
383 | |
384 | free (tmp_name); | |
385 | ||
386 | /* Allocate another symbol to mark where we switch to arm mode. */ | |
387 | ||
388 | #define CHANGE_TO_ARM "__%s_change_to_arm" | |
389 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
390 | ||
391 | tmp_name = (char *) bfd_malloc (strlen (name) + strlen (CHANGE_TO_ARM) + 1); | |
392 | ||
393 | BFD_ASSERT (tmp_name); | |
394 | ||
395 | sprintf (tmp_name, CHANGE_TO_ARM, name); | |
396 | ||
397 | myh = NULL; | |
398 | ||
399 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, tmp_name, | |
400 | BSF_LOCAL, s, hash_table->thumb_glue_size + 4, | |
401 | NULL, true, false, | |
402 | (struct bfd_link_hash_entry **) &myh); | |
403 | ||
404 | free (tmp_name); | |
405 | ||
406 | hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; | |
407 | ||
408 | return; | |
409 | } | |
410 | ||
411 | /* Select a BFD to be used to hold the sections used by the glue code. | |
412 | This function is called from the linker scripts in ld/emultempl/ | |
413 | {armelf/pe}.em */ | |
414 | boolean | |
415 | bfd_elf32_arm_get_bfd_for_interworking (abfd, info) | |
416 | bfd *abfd; | |
417 | struct bfd_link_info *info; | |
418 | { | |
419 | struct elf32_arm_link_hash_table *globals; | |
420 | flagword flags; | |
421 | asection *sec; | |
422 | ||
423 | /* If we are only performing a partial link do not bother | |
424 | getting a bfd to hold the glue. */ | |
425 | if (info->relocateable) | |
426 | return true; | |
427 | ||
428 | globals = elf32_arm_hash_table (info); | |
429 | ||
430 | BFD_ASSERT (globals != NULL); | |
431 | ||
432 | if (globals->bfd_of_glue_owner != NULL) | |
433 | return true; | |
434 | ||
435 | sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); | |
436 | ||
437 | if (sec == NULL) | |
438 | { | |
439 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY; | |
440 | ||
441 | sec = bfd_make_section (abfd, ARM2THUMB_GLUE_SECTION_NAME); | |
442 | ||
443 | if (sec == NULL | |
444 | || !bfd_set_section_flags (abfd, sec, flags) | |
445 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
446 | return false; | |
447 | } | |
448 | ||
449 | sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
450 | ||
451 | if (sec == NULL) | |
452 | { | |
453 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY; | |
454 | ||
455 | sec = bfd_make_section (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
456 | ||
457 | if (sec == NULL | |
458 | || !bfd_set_section_flags (abfd, sec, flags) | |
459 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
460 | return false; | |
461 | } | |
462 | ||
463 | /* Save the bfd for later use. */ | |
464 | globals->bfd_of_glue_owner = abfd; | |
465 | ||
466 | return true; | |
467 | } | |
468 | ||
469 | boolean | |
470 | bfd_elf32_arm_process_before_allocation (abfd, link_info) | |
471 | bfd *abfd; | |
472 | struct bfd_link_info *link_info; | |
473 | { | |
474 | Elf_Internal_Shdr *symtab_hdr; | |
475 | Elf_Internal_Rela *free_relocs = NULL; | |
476 | Elf_Internal_Rela *irel, *irelend; | |
477 | bfd_byte *contents = NULL; | |
478 | bfd_byte *free_contents = NULL; | |
479 | Elf32_External_Sym *extsyms = NULL; | |
480 | Elf32_External_Sym *free_extsyms = NULL; | |
481 | ||
482 | asection *sec; | |
483 | struct elf32_arm_link_hash_table *globals; | |
484 | ||
485 | /* If we are only performing a partial link do not bother | |
486 | to construct any glue. */ | |
487 | if (link_info->relocateable) | |
488 | return true; | |
489 | ||
490 | /* Here we have a bfd that is to be included on the link. We have a hook | |
491 | to do reloc rummaging, before section sizes are nailed down. */ | |
492 | ||
2c3c46ad CM |
493 | globals = elf32_arm_hash_table (link_info); |
494 | ||
495 | BFD_ASSERT (globals != NULL); | |
496 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
497 | ||
498 | /* Rummage around all the relocs and map the glue vectors. */ | |
499 | sec = abfd->sections; | |
500 | ||
501 | if (sec == NULL) | |
502 | return true; | |
503 | ||
504 | for (; sec != NULL; sec = sec->next) | |
505 | { | |
2c3c46ad CM |
506 | if (sec->reloc_count == 0) |
507 | continue; | |
508 | ||
509 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
510 | /* Load the relocs. */ | |
511 | ||
512 | irel = (_bfd_elf32_link_read_relocs (abfd, sec, (PTR) NULL, | |
513 | (Elf_Internal_Rela *) NULL, false)); | |
514 | ||
bb3b4377 | 515 | BFD_ASSERT (irel != 0); |
2c3c46ad CM |
516 | |
517 | irelend = irel + sec->reloc_count; | |
518 | for (; irel < irelend; irel++) | |
519 | { | |
520 | long r_type; | |
521 | unsigned long r_index; | |
522 | unsigned char code; | |
523 | ||
524 | struct elf_link_hash_entry *h; | |
525 | ||
526 | r_type = ELF32_R_TYPE (irel->r_info); | |
527 | r_index = ELF32_R_SYM (irel->r_info); | |
528 | ||
529 | /* These are the only relocation types we care about */ | |
530 | if (r_type != R_ARM_PC24 | |
531 | && r_type != R_ARM_THM_PC22) | |
532 | continue; | |
533 | ||
534 | /* Get the section contents if we haven't done so already. */ | |
535 | if (contents == NULL) | |
536 | { | |
537 | /* Get cached copy if it exists. */ | |
538 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
539 | contents = elf_section_data (sec)->this_hdr.contents; | |
540 | else | |
541 | { | |
542 | /* Go get them off disk. */ | |
543 | contents = (bfd_byte *) bfd_malloc (sec->_raw_size); | |
544 | if (contents == NULL) | |
545 | goto error_return; | |
546 | free_contents = contents; | |
547 | ||
548 | if (!bfd_get_section_contents (abfd, sec, contents, | |
549 | (file_ptr) 0, sec->_raw_size)) | |
550 | goto error_return; | |
551 | } | |
552 | } | |
553 | ||
554 | /* Read this BFD's symbols if we haven't done so already. */ | |
555 | if (extsyms == NULL) | |
556 | { | |
557 | /* Get cached copy if it exists. */ | |
558 | if (symtab_hdr->contents != NULL) | |
559 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
560 | else | |
561 | { | |
562 | /* Go get them off disk. */ | |
563 | extsyms = ((Elf32_External_Sym *) | |
564 | bfd_malloc (symtab_hdr->sh_size)); | |
565 | if (extsyms == NULL) | |
566 | goto error_return; | |
567 | free_extsyms = extsyms; | |
568 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
569 | || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd) | |
570 | != symtab_hdr->sh_size)) | |
571 | goto error_return; | |
572 | } | |
573 | } | |
574 | ||
575 | /* If the relocation is not against a symbol it cannot concern us. */ | |
576 | ||
577 | h = NULL; | |
578 | ||
579 | /* We don't care about local symbols */ | |
580 | if (r_index < symtab_hdr->sh_info) | |
581 | continue; | |
582 | ||
583 | /* This is an external symbol */ | |
584 | r_index -= symtab_hdr->sh_info; | |
585 | h = (struct elf_link_hash_entry *) | |
586 | elf_sym_hashes (abfd)[r_index]; | |
587 | ||
588 | /* If the relocation is against a static symbol it must be within | |
589 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
590 | if (h == NULL) | |
591 | continue; | |
592 | ||
593 | switch (r_type) | |
594 | { | |
595 | case R_ARM_PC24: | |
596 | /* This one is a call from arm code. We need to look up | |
597 | the target of the call. If it is a thumb target, we | |
598 | insert glue. */ | |
599 | ||
bb3b4377 | 600 | if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC) |
2c3c46ad CM |
601 | record_arm_to_thumb_glue (link_info, h); |
602 | break; | |
603 | ||
604 | case R_ARM_THM_PC22: | |
bb3b4377 CM |
605 | /* This one is a call from thumb code. We look |
606 | up the target of the call. If it is not a thumb | |
607 | target, we insert glue. */ | |
2c3c46ad | 608 | |
bb3b4377 CM |
609 | if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC) |
610 | record_thumb_to_arm_glue (link_info, h); | |
2c3c46ad CM |
611 | break; |
612 | ||
613 | default: | |
614 | break; | |
615 | } | |
616 | } | |
617 | } | |
618 | ||
619 | return true; | |
620 | error_return: | |
621 | if (free_relocs != NULL) | |
622 | free (free_relocs); | |
623 | if (free_contents != NULL) | |
624 | free (free_contents); | |
625 | if (free_extsyms != NULL) | |
626 | free (free_extsyms); | |
627 | return false; | |
628 | ||
629 | } | |
efaa65c9 CM |
630 | |
631 | #define USE_RELA | |
632 | #define TARGET_UNDERSCORE '_' | |
633 | ||
634 | static reloc_howto_type elf32_arm_howto_table[] = | |
635 | { | |
636 | /* No relocation */ | |
2c3c46ad CM |
637 | HOWTO (R_ARM_NONE, /* type */ |
638 | 0, /* rightshift */ | |
639 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
640 | 0, /* bitsize */ | |
641 | false, /* pc_relative */ | |
642 | 0, /* bitpos */ | |
643 | complain_overflow_dont, /* complain_on_overflow */ | |
644 | bfd_elf_generic_reloc, /* special_function */ | |
645 | "R_ARM_NONE", /* name */ | |
646 | false, /* partial_inplace */ | |
647 | 0, /* src_mask */ | |
648 | 0, /* dst_mask */ | |
649 | false), /* pcrel_offset */ | |
650 | ||
651 | HOWTO (R_ARM_PC24, /* type */ | |
652 | 2, /* rightshift */ | |
653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
654 | 24, /* bitsize */ | |
655 | true, /* pc_relative */ | |
656 | 0, /* bitpos */ | |
657 | complain_overflow_signed, /* complain_on_overflow */ | |
658 | bfd_elf_generic_reloc, /* special_function */ | |
659 | "R_ARM_PC24", /* name */ | |
660 | false, /* partial_inplace */ | |
661 | 0x00ffffff, /* src_mask */ | |
662 | 0x00ffffff, /* dst_mask */ | |
663 | true), /* pcrel_offset */ | |
efaa65c9 CM |
664 | |
665 | /* 32 bit absolute */ | |
2c3c46ad CM |
666 | HOWTO (R_ARM_ABS32, /* type */ |
667 | 0, /* rightshift */ | |
668 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
669 | 32, /* bitsize */ | |
670 | false, /* pc_relative */ | |
671 | 0, /* bitpos */ | |
672 | complain_overflow_bitfield, /* complain_on_overflow */ | |
673 | bfd_elf_generic_reloc, /* special_function */ | |
674 | "R_ARM_ABS32", /* name */ | |
675 | false, /* partial_inplace */ | |
676 | 0xffffffff, /* src_mask */ | |
677 | 0xffffffff, /* dst_mask */ | |
678 | false), /* pcrel_offset */ | |
efaa65c9 CM |
679 | |
680 | /* standard 32bit pc-relative reloc */ | |
2c3c46ad CM |
681 | HOWTO (R_ARM_REL32, /* type */ |
682 | 0, /* rightshift */ | |
683 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
684 | 32, /* bitsize */ | |
685 | true, /* pc_relative */ | |
686 | 0, /* bitpos */ | |
687 | complain_overflow_bitfield, /* complain_on_overflow */ | |
688 | bfd_elf_generic_reloc, /* special_function */ | |
689 | "R_ARM_REL32", /* name */ | |
690 | false, /* partial_inplace */ | |
691 | 0xffffffff, /* src_mask */ | |
692 | 0xffffffff, /* dst_mask */ | |
693 | true), /* pcrel_offset */ | |
efaa65c9 CM |
694 | |
695 | /* 8 bit absolute */ | |
2c3c46ad CM |
696 | HOWTO (R_ARM_ABS8, /* type */ |
697 | 0, /* rightshift */ | |
698 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
699 | 8, /* bitsize */ | |
700 | false, /* pc_relative */ | |
701 | 0, /* bitpos */ | |
702 | complain_overflow_bitfield, /* complain_on_overflow */ | |
703 | bfd_elf_generic_reloc, /* special_function */ | |
704 | "R_ARM_ABS8", /* name */ | |
705 | false, /* partial_inplace */ | |
706 | 0x000000ff, /* src_mask */ | |
707 | 0x000000ff, /* dst_mask */ | |
708 | false), /* pcrel_offset */ | |
efaa65c9 CM |
709 | |
710 | /* 16 bit absolute */ | |
2c3c46ad CM |
711 | HOWTO (R_ARM_ABS16, /* type */ |
712 | 0, /* rightshift */ | |
713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
714 | 16, /* bitsize */ | |
715 | false, /* pc_relative */ | |
716 | 0, /* bitpos */ | |
717 | complain_overflow_bitfield, /* complain_on_overflow */ | |
718 | bfd_elf_generic_reloc, /* special_function */ | |
719 | "R_ARM_ABS16", /* name */ | |
720 | false, /* partial_inplace */ | |
721 | 0, /* src_mask */ | |
722 | 0, /* dst_mask */ | |
723 | false), /* pcrel_offset */ | |
efaa65c9 CM |
724 | |
725 | /* 12 bit absolute */ | |
2c3c46ad CM |
726 | HOWTO (R_ARM_ABS12, /* type */ |
727 | 0, /* rightshift */ | |
728 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
729 | 12, /* bitsize */ | |
730 | false, /* pc_relative */ | |
731 | 0, /* bitpos */ | |
732 | complain_overflow_bitfield, /* complain_on_overflow */ | |
733 | bfd_elf_generic_reloc, /* special_function */ | |
734 | "R_ARM_ABS12", /* name */ | |
735 | false, /* partial_inplace */ | |
736 | 0x000008ff, /* src_mask */ | |
737 | 0x000008ff, /* dst_mask */ | |
738 | false), /* pcrel_offset */ | |
739 | ||
740 | HOWTO (R_ARM_THM_ABS5, /* type */ | |
741 | 0, /* rightshift */ | |
742 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 5, /* bitsize */ | |
744 | false, /* pc_relative */ | |
745 | 0, /* bitpos */ | |
746 | complain_overflow_bitfield, /* complain_on_overflow */ | |
747 | bfd_elf_generic_reloc, /* special_function */ | |
748 | "R_ARM_THM_ABS5", /* name */ | |
749 | false, /* partial_inplace */ | |
750 | 0x000007e0, /* src_mask */ | |
751 | 0x000007e0, /* dst_mask */ | |
752 | false), /* pcrel_offset */ | |
753 | ||
754 | HOWTO (R_ARM_THM_PC22, /* type */ | |
755 | 1, /* rightshift */ | |
756 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
757 | 22, /* bitsize */ | |
758 | true, /* pc_relative */ | |
759 | 0, /* bitpos */ | |
760 | complain_overflow_signed, /* complain_on_overflow */ | |
761 | bfd_elf_generic_reloc, /* special_function */ | |
762 | "R_ARM_THM_PC22", /* name */ | |
763 | false, /* partial_inplace */ | |
764 | 0x07ff07ff, /* src_mask */ | |
765 | 0x07ff07ff, /* dst_mask */ | |
766 | true), /* pcrel_offset */ | |
767 | ||
768 | HOWTO (R_ARM_SBREL32, /* type */ | |
769 | 0, /* rightshift */ | |
770 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
771 | 0, /* bitsize */ | |
772 | false, /* pc_relative */ | |
773 | 0, /* bitpos */ | |
774 | complain_overflow_dont, /* complain_on_overflow */ | |
775 | bfd_elf_generic_reloc, /* special_function */ | |
776 | "R_ARM_SBREL32", /* name */ | |
777 | false, /* partial_inplace */ | |
778 | 0, /* src_mask */ | |
779 | 0, /* dst_mask */ | |
780 | false), /* pcrel_offset */ | |
781 | ||
782 | HOWTO (R_ARM_AMP_VCALL9, /* type */ | |
783 | 1, /* rightshift */ | |
784 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
785 | 8, /* bitsize */ | |
786 | true, /* pc_relative */ | |
787 | 0, /* bitpos */ | |
788 | complain_overflow_signed, /* complain_on_overflow */ | |
789 | bfd_elf_generic_reloc, /* special_function */ | |
790 | "R_ARM_AMP_VCALL9", /* name */ | |
791 | false, /* partial_inplace */ | |
792 | 0x000000ff, /* src_mask */ | |
793 | 0x000000ff, /* dst_mask */ | |
794 | true), /* pcrel_offset */ | |
efaa65c9 CM |
795 | |
796 | /* 12 bit pc relative */ | |
2c3c46ad CM |
797 | HOWTO (R_ARM_THM_PC11, /* type */ |
798 | 1, /* rightshift */ | |
799 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
800 | 11, /* bitsize */ | |
801 | true, /* pc_relative */ | |
802 | 0, /* bitpos */ | |
803 | complain_overflow_signed, /* complain_on_overflow */ | |
804 | bfd_elf_generic_reloc, /* special_function */ | |
805 | "R_ARM_THM_PC11", /* name */ | |
806 | false, /* partial_inplace */ | |
807 | 0x000007ff, /* src_mask */ | |
808 | 0x000007ff, /* dst_mask */ | |
809 | true), /* pcrel_offset */ | |
efaa65c9 CM |
810 | |
811 | /* 12 bit pc relative */ | |
2c3c46ad CM |
812 | HOWTO (R_ARM_THM_PC9, /* type */ |
813 | 1, /* rightshift */ | |
814 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
815 | 8, /* bitsize */ | |
816 | true, /* pc_relative */ | |
817 | 0, /* bitpos */ | |
818 | complain_overflow_signed, /* complain_on_overflow */ | |
819 | bfd_elf_generic_reloc, /* special_function */ | |
820 | "R_ARM_THM_PC9", /* name */ | |
821 | false, /* partial_inplace */ | |
822 | 0x000000ff, /* src_mask */ | |
823 | 0x000000ff, /* dst_mask */ | |
824 | true), /* pcrel_offset */ | |
efaa65c9 | 825 | |
948beb4a CM |
826 | /* GNU extension to record C++ vtable hierarchy */ |
827 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ | |
828 | 0, /* rightshift */ | |
829 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
830 | 0, /* bitsize */ | |
831 | false, /* pc_relative */ | |
832 | 0, /* bitpos */ | |
833 | complain_overflow_dont, /* complain_on_overflow */ | |
834 | NULL, /* special_function */ | |
835 | "R_ARM_GNU_VTINHERIT", /* name */ | |
836 | false, /* partial_inplace */ | |
837 | 0, /* src_mask */ | |
838 | 0, /* dst_mask */ | |
839 | false), /* pcrel_offset */ | |
840 | ||
841 | /* GNU extension to record C++ vtable member usage */ | |
842 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ | |
843 | 0, /* rightshift */ | |
844 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
845 | 0, /* bitsize */ | |
846 | false, /* pc_relative */ | |
847 | 0, /* bitpos */ | |
848 | complain_overflow_dont, /* complain_on_overflow */ | |
849 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
850 | "R_ARM_GNU_VTENTRY", /* name */ | |
851 | false, /* partial_inplace */ | |
852 | 0, /* src_mask */ | |
853 | 0, /* dst_mask */ | |
854 | false), /* pcrel_offset */ | |
855 | ||
efaa65c9 | 856 | |
2c3c46ad CM |
857 | HOWTO (R_ARM_RREL32, /* type */ |
858 | 0, /* rightshift */ | |
859 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
860 | 0, /* bitsize */ | |
861 | false, /* pc_relative */ | |
862 | 0, /* bitpos */ | |
863 | complain_overflow_dont, /* complain_on_overflow */ | |
864 | bfd_elf_generic_reloc, /* special_function */ | |
865 | "R_ARM_RREL32", /* name */ | |
866 | false, /* partial_inplace */ | |
867 | 0, /* src_mask */ | |
868 | 0, /* dst_mask */ | |
869 | false), /* pcrel_offset */ | |
870 | ||
871 | HOWTO (R_ARM_RABS32, /* type */ | |
872 | 0, /* rightshift */ | |
873 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
874 | 0, /* bitsize */ | |
875 | false, /* pc_relative */ | |
876 | 0, /* bitpos */ | |
877 | complain_overflow_dont, /* complain_on_overflow */ | |
878 | bfd_elf_generic_reloc, /* special_function */ | |
879 | "R_ARM_RABS32", /* name */ | |
880 | false, /* partial_inplace */ | |
881 | 0, /* src_mask */ | |
882 | 0, /* dst_mask */ | |
883 | false), /* pcrel_offset */ | |
884 | ||
885 | HOWTO (R_ARM_RPC24, /* type */ | |
886 | 0, /* rightshift */ | |
887 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
888 | 0, /* bitsize */ | |
889 | false, /* pc_relative */ | |
890 | 0, /* bitpos */ | |
891 | complain_overflow_dont, /* complain_on_overflow */ | |
892 | bfd_elf_generic_reloc, /* special_function */ | |
893 | "R_ARM_RPC24", /* name */ | |
894 | false, /* partial_inplace */ | |
895 | 0, /* src_mask */ | |
896 | 0, /* dst_mask */ | |
897 | false), /* pcrel_offset */ | |
898 | ||
899 | HOWTO (R_ARM_RBASE, /* type */ | |
900 | 0, /* rightshift */ | |
901 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
902 | 0, /* bitsize */ | |
903 | false, /* pc_relative */ | |
904 | 0, /* bitpos */ | |
905 | complain_overflow_dont, /* complain_on_overflow */ | |
906 | bfd_elf_generic_reloc, /* special_function */ | |
907 | "R_ARM_RBASE", /* name */ | |
908 | false, /* partial_inplace */ | |
909 | 0, /* src_mask */ | |
910 | 0, /* dst_mask */ | |
911 | false), /* pcrel_offset */ | |
efaa65c9 CM |
912 | |
913 | }; | |
914 | struct elf32_arm_reloc_map | |
2c3c46ad CM |
915 | { |
916 | unsigned char bfd_reloc_val; | |
917 | unsigned char elf_reloc_val; | |
918 | }; | |
efaa65c9 CM |
919 | |
920 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = | |
921 | { | |
2c3c46ad CM |
922 | {BFD_RELOC_NONE, R_ARM_NONE,}, |
923 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24,}, | |
924 | {BFD_RELOC_32, R_ARM_ABS32,}, | |
925 | {BFD_RELOC_32_PCREL, R_ARM_REL32,}, | |
926 | {BFD_RELOC_8, R_ARM_ABS8,}, | |
927 | {BFD_RELOC_16, R_ARM_ABS16,}, | |
928 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12,}, | |
929 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5,}, | |
930 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22,}, | |
948beb4a CM |
931 | {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT }, |
932 | {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY }, | |
2c3c46ad CM |
933 | {BFD_RELOC_NONE, R_ARM_SBREL32,}, |
934 | {BFD_RELOC_NONE, R_ARM_AMP_VCALL9,}, | |
935 | {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_PC11,}, | |
936 | {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_PC9,} | |
efaa65c9 CM |
937 | }; |
938 | ||
939 | static reloc_howto_type * | |
940 | elf32_arm_reloc_type_lookup (abfd, code) | |
941 | bfd *abfd; | |
942 | bfd_reloc_code_real_type code; | |
943 | { | |
944 | unsigned int i; | |
2c3c46ad | 945 | |
efaa65c9 | 946 | for (i = 0; |
2c3c46ad | 947 | i < sizeof (elf32_arm_reloc_map) / sizeof (struct elf32_arm_reloc_map); |
efaa65c9 CM |
948 | i++) |
949 | { | |
950 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) | |
2c3c46ad | 951 | return &elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val]; |
efaa65c9 | 952 | } |
2c3c46ad | 953 | |
efaa65c9 CM |
954 | return NULL; |
955 | } | |
956 | ||
957 | static void | |
958 | elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc) | |
959 | bfd *abfd; | |
960 | arelent *bfd_reloc; | |
961 | Elf32_Internal_Rela *elf_reloc; | |
962 | { | |
963 | unsigned int r_type; | |
964 | ||
965 | r_type = ELF32_R_TYPE (elf_reloc->r_info); | |
966 | /* fixme: need range test */ | |
967 | /* BFD_ASSERT (r_type < (unsigned int) R_ELF32_ARM_MAX); */ | |
968 | bfd_reloc->howto = &elf32_arm_howto_table[r_type]; | |
969 | } | |
970 | ||
2c3c46ad CM |
971 | /* The thumb form of a long branch is a bit finicky, because the offset |
972 | encoding is split over two fields, each in it's own instruction. They | |
973 | can occur in any order. So given a thumb form of long branch, and an | |
974 | offset, insert the offset into the thumb branch and return finished | |
975 | instruction. | |
976 | ||
977 | It takes two thumb instructions to encode the target address. Each has | |
978 | 11 bits to invest. The upper 11 bits are stored in one (identifed by | |
979 | H-0.. see below), the lower 11 bits are stored in the other (identified | |
980 | by H-1). | |
981 | ||
982 | Combine together and shifted left by 1 (it's a half word address) and | |
983 | there you have it. | |
984 | ||
985 | Op: 1111 = F, | |
986 | H-0, upper address-0 = 000 | |
987 | Op: 1111 = F, | |
988 | H-1, lower address-0 = 800 | |
989 | ||
990 | They can be ordered either way, but the arm tools I've seen always put | |
991 | the lower one first. It probably doesn't matter. krk@cygnus.com | |
992 | ||
993 | XXX: Actually the order does matter. The second instruction (H-1) | |
994 | moves the computed address into the PC, so it must be the second one | |
995 | in the sequence. The problem, however is that whilst little endian code | |
996 | stores the instructions in HI then LOW order, big endian code does the | |
997 | reverse. nickc@cygnus.com */ | |
998 | ||
999 | #define LOW_HI_ORDER 0xF800F000 | |
1000 | #define HI_LOW_ORDER 0xF000F800 | |
1001 | ||
1002 | static insn32 | |
1003 | insert_thumb_branch (br_insn, rel_off) | |
1004 | insn32 br_insn; | |
1005 | int rel_off; | |
1006 | { | |
1007 | unsigned int low_bits; | |
1008 | unsigned int high_bits; | |
1009 | ||
1010 | ||
1011 | BFD_ASSERT ((rel_off & 1) != 1); | |
1012 | ||
1013 | rel_off >>= 1; /* half word aligned address */ | |
1014 | low_bits = rel_off & 0x000007FF; /* the bottom 11 bits */ | |
1015 | high_bits = (rel_off >> 11) & 0x000007FF; /* the top 11 bits */ | |
1016 | ||
1017 | if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) | |
1018 | br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; | |
1019 | else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) | |
1020 | br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; | |
1021 | else | |
1022 | abort (); /* error - not a valid branch instruction form */ | |
1023 | ||
1024 | /* FIXME: abort is probably not the right call. krk@cygnus.com */ | |
1025 | ||
1026 | return br_insn; | |
1027 | } | |
774852e9 NC |
1028 | |
1029 | /* Thumb code calling an ARM function */ | |
1030 | int | |
2c3c46ad CM |
1031 | elf32_thumb_to_arm_stub (info, name, input_bfd, output_bfd, input_section, |
1032 | hit_data, sym_sec, offset, addend, val) | |
1033 | struct bfd_link_info *info; | |
1034 | char *name; | |
1035 | bfd *input_bfd; | |
1036 | bfd *output_bfd; | |
1037 | asection *input_section; | |
1038 | bfd_byte *hit_data; | |
1039 | asection *sym_sec; | |
1040 | int offset; | |
1041 | int addend; | |
1042 | bfd_vma val; | |
1043 | { | |
2c3c46ad CM |
1044 | asection *s = 0; |
1045 | long int my_offset; | |
1046 | unsigned long int tmp; | |
1047 | long int ret_offset; | |
1048 | struct elf_link_hash_entry *myh; | |
1049 | struct elf32_arm_link_hash_table *globals; | |
1050 | ||
1051 | myh = find_thumb_glue (info, name, input_bfd); | |
1052 | if (myh == NULL) | |
1053 | return false; | |
1054 | ||
1055 | globals = elf32_arm_hash_table (info); | |
1056 | ||
1057 | BFD_ASSERT (globals != NULL); | |
1058 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1059 | ||
1060 | my_offset = myh->root.u.def.value; | |
1061 | ||
1062 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
1063 | THUMB2ARM_GLUE_SECTION_NAME); | |
1064 | ||
1065 | BFD_ASSERT (s != NULL); | |
1066 | BFD_ASSERT (s->contents != NULL); | |
1067 | BFD_ASSERT (s->output_section != NULL); | |
1068 | ||
1069 | if ((my_offset & 0x01) == 0x01) | |
1070 | { | |
774852e9 NC |
1071 | if (sym_sec != NULL |
1072 | && sym_sec->owner != NULL | |
2c3c46ad CM |
1073 | && !INTERWORK_FLAG (sym_sec->owner)) |
1074 | { | |
1075 | _bfd_error_handler | |
1076 | (_ ("%s(%s): warning: interworking not enabled."), | |
1077 | bfd_get_filename (sym_sec->owner), name); | |
1078 | _bfd_error_handler | |
1079 | (_ (" first occurrence: %s: thumb call to arm"), | |
1080 | bfd_get_filename (input_bfd)); | |
a61c9386 NC |
1081 | |
1082 | return false; | |
2c3c46ad CM |
1083 | } |
1084 | ||
1085 | --my_offset; | |
1086 | myh->root.u.def.value = my_offset; | |
1087 | ||
1088 | bfd_put_16 (output_bfd, t2a1_bx_pc_insn, | |
1089 | s->contents + my_offset); | |
1090 | ||
1091 | bfd_put_16 (output_bfd, t2a2_noop_insn, | |
1092 | s->contents + my_offset + 2); | |
1093 | ||
1094 | ret_offset = | |
1095 | ((bfd_signed_vma) val) /* Address of destination of the stub */ | |
1096 | - ((bfd_signed_vma) | |
1097 | (s->output_offset /* Offset from the start of the current section to the start of the stubs. */ | |
1098 | + my_offset /* Offset of the start of this stub from the start of the stubs. */ | |
1099 | + s->output_section->vma) /* Address of the start of the current section. */ | |
1100 | + 4 /* The branch instruction is 4 bytes into the stub. */ | |
1101 | + 8); /* ARM branches work from the pc of the instruction + 8. */ | |
1102 | ||
1103 | bfd_put_32 (output_bfd, | |
1104 | t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), | |
1105 | s->contents + my_offset + 4); | |
1106 | } | |
1107 | ||
1108 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
1109 | ||
1110 | /* Now go back and fix up the original BL insn to point | |
1111 | to here. */ | |
1112 | ret_offset = | |
1113 | s->output_offset | |
1114 | + my_offset | |
1115 | - (input_section->output_offset | |
1116 | + offset + addend) | |
1117 | - 4; | |
1118 | ||
1119 | tmp = bfd_get_32 (input_bfd, hit_data | |
1120 | - input_section->vma); | |
1121 | ||
1122 | bfd_put_32 (output_bfd, | |
1123 | insert_thumb_branch (tmp, ret_offset), | |
1124 | hit_data - input_section->vma); | |
a61c9386 NC |
1125 | |
1126 | return true; | |
2c3c46ad | 1127 | } |
774852e9 NC |
1128 | |
1129 | /* Arm code calling a Thumb function */ | |
1130 | int | |
2c3c46ad CM |
1131 | elf32_arm_to_thumb_stub (info, name, input_bfd, output_bfd, input_section, |
1132 | hit_data, sym_sec, offset, addend, val) | |
1133 | ||
1134 | struct bfd_link_info *info; | |
1135 | char *name; | |
1136 | bfd *input_bfd; | |
1137 | bfd *output_bfd; | |
1138 | asection *input_section; | |
1139 | bfd_byte *hit_data; | |
1140 | asection *sym_sec; | |
1141 | int offset; | |
1142 | int addend; | |
1143 | bfd_vma val; | |
1144 | { | |
2c3c46ad CM |
1145 | unsigned long int tmp; |
1146 | long int my_offset; | |
1147 | asection *s; | |
1148 | long int ret_offset; | |
1149 | struct elf_link_hash_entry *myh; | |
1150 | struct elf32_arm_link_hash_table *globals; | |
1151 | ||
1152 | myh = find_arm_glue (info, name, input_bfd); | |
1153 | if (myh == NULL) | |
1154 | return false; | |
1155 | ||
1156 | globals = elf32_arm_hash_table (info); | |
1157 | ||
1158 | BFD_ASSERT (globals != NULL); | |
1159 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1160 | ||
1161 | my_offset = myh->root.u.def.value; | |
1162 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
1163 | ARM2THUMB_GLUE_SECTION_NAME); | |
1164 | BFD_ASSERT (s != NULL); | |
1165 | BFD_ASSERT (s->contents != NULL); | |
1166 | BFD_ASSERT (s->output_section != NULL); | |
1167 | ||
1168 | if ((my_offset & 0x01) == 0x01) | |
1169 | { | |
774852e9 NC |
1170 | if (sym_sec != NULL |
1171 | && sym_sec->owner != NULL | |
2c3c46ad CM |
1172 | && !INTERWORK_FLAG (sym_sec->owner)) |
1173 | { | |
1174 | _bfd_error_handler | |
1175 | (_ ("%s(%s): warning: interworking not enabled."), | |
1176 | bfd_get_filename (sym_sec->owner), name); | |
1177 | _bfd_error_handler | |
1178 | (_ (" first occurrence: %s: arm call to thumb"), | |
1179 | bfd_get_filename (input_bfd)); | |
1180 | } | |
1181 | --my_offset; | |
1182 | myh->root.u.def.value = my_offset; | |
1183 | ||
1184 | bfd_put_32 (output_bfd, a2t1_ldr_insn, | |
1185 | s->contents + my_offset); | |
1186 | ||
1187 | bfd_put_32 (output_bfd, a2t2_bx_r12_insn, | |
1188 | s->contents + my_offset + 4); | |
1189 | ||
1190 | /* It's a thumb address. Add the low order bit. */ | |
1191 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
1192 | s->contents + my_offset + 8); | |
1193 | } | |
1194 | ||
1195 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
1196 | ||
1197 | tmp = bfd_get_32 (input_bfd, hit_data); | |
1198 | tmp = tmp & 0xFF000000; | |
1199 | ||
1200 | /* Somehow these are both 4 too far, so subtract 8. */ | |
1201 | ret_offset = s->output_offset | |
1202 | + my_offset | |
1203 | + s->output_section->vma | |
1204 | - (input_section->output_offset | |
1205 | + input_section->output_section->vma | |
1206 | + offset + addend) | |
1207 | - 8; | |
1208 | ||
1209 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); | |
1210 | ||
1211 | bfd_put_32 (output_bfd, tmp, hit_data | |
1212 | - input_section->vma); | |
1213 | ||
a61c9386 NC |
1214 | |
1215 | return true; | |
2c3c46ad | 1216 | } |
774852e9 | 1217 | |
efaa65c9 CM |
1218 | /* Perform a relocation as part of a final link. */ |
1219 | static bfd_reloc_status_type | |
1220 | elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, | |
2c3c46ad CM |
1221 | input_section, contents, offset, value, |
1222 | addend, info, sym_sec, sym_name, sym_flags) | |
efaa65c9 CM |
1223 | reloc_howto_type *howto; |
1224 | bfd *input_bfd; | |
1225 | bfd *output_bfd; | |
1226 | asection *input_section; | |
1227 | bfd_byte *contents; | |
1228 | bfd_vma offset; | |
1229 | bfd_vma value; | |
1230 | bfd_vma addend; | |
1231 | struct bfd_link_info *info; | |
1232 | asection *sym_sec; | |
774852e9 | 1233 | const char *sym_name; |
a17e14c1 | 1234 | unsigned char sym_flags; |
efaa65c9 CM |
1235 | { |
1236 | unsigned long r_type = howto->type; | |
1237 | bfd_byte *hit_data = contents + offset; | |
1238 | ||
1239 | switch (r_type) | |
1240 | { | |
1241 | ||
1242 | case R_ARM_NONE: | |
1243 | return bfd_reloc_ok; | |
1244 | ||
1245 | case R_ARM_PC24: | |
2c3c46ad CM |
1246 | /* Arm B/BL instruction */ |
1247 | ||
1248 | /* check for arm calling thumb function */ | |
bb3b4377 | 1249 | if (sym_flags == STT_ARM_TFUNC) |
2c3c46ad CM |
1250 | { |
1251 | elf32_arm_to_thumb_stub (info, sym_name, input_bfd, output_bfd, | |
1252 | input_section, hit_data, sym_sec, offset, addend, value); | |
1253 | return bfd_reloc_ok; | |
1254 | } | |
1255 | ||
1256 | value = value + addend; | |
1257 | value -= (input_section->output_section->vma | |
1258 | + input_section->output_offset + 8); | |
1259 | value -= offset; | |
1260 | value = value >> howto->rightshift; | |
efaa65c9 | 1261 | |
efaa65c9 CM |
1262 | value &= 0xffffff; |
1263 | value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000); | |
1264 | bfd_put_32 (input_bfd, value, hit_data); | |
1265 | return bfd_reloc_ok; | |
1266 | ||
1267 | case R_ARM_ABS32: | |
1268 | value += addend; | |
bb3b4377 | 1269 | if (sym_flags == STT_ARM_TFUNC) |
2c3c46ad | 1270 | value |= 1; |
efaa65c9 CM |
1271 | bfd_put_32 (input_bfd, value, hit_data); |
1272 | return bfd_reloc_ok; | |
1273 | ||
1274 | case R_ARM_REL32: | |
1275 | value -= (input_section->output_section->vma | |
2c3c46ad | 1276 | + input_section->output_offset); |
efaa65c9 CM |
1277 | value += addend; |
1278 | ||
1279 | bfd_put_32 (input_bfd, value, hit_data); | |
1280 | return bfd_reloc_ok; | |
1281 | ||
1282 | case R_ARM_ABS8: | |
1283 | value += addend; | |
2c3c46ad | 1284 | |
efaa65c9 | 1285 | if ((long) value > 0x7f || (long) value < -0x80) |
2c3c46ad CM |
1286 | return bfd_reloc_overflow; |
1287 | ||
efaa65c9 CM |
1288 | bfd_put_8 (input_bfd, value, hit_data); |
1289 | return bfd_reloc_ok; | |
1290 | ||
1291 | case R_ARM_ABS16: | |
1292 | value += addend; | |
1293 | ||
1294 | if ((long) value > 0x7fff || (long) value < -0x8000) | |
2c3c46ad CM |
1295 | return bfd_reloc_overflow; |
1296 | ||
efaa65c9 CM |
1297 | bfd_put_16 (input_bfd, value, hit_data); |
1298 | return bfd_reloc_ok; | |
1299 | ||
1300 | case R_ARM_ABS12: | |
1301 | /* Support ldr and str instruction for the arm */ | |
1302 | /* Also thumb b (unconditional branch) */ | |
1303 | value += addend; | |
1304 | ||
1305 | if ((long) value > 0x7ff || (long) value < -0x800) | |
2c3c46ad | 1306 | return bfd_reloc_overflow; |
efaa65c9 CM |
1307 | |
1308 | value |= (bfd_get_32 (input_bfd, hit_data) & 0xfffff000); | |
1309 | bfd_put_32 (input_bfd, value, hit_data); | |
1310 | return bfd_reloc_ok; | |
1311 | ||
1312 | case R_ARM_THM_ABS5: | |
1313 | /* Support ldr and str instructions for the thumb. */ | |
1314 | value += addend; | |
1315 | ||
1316 | if ((long) value > 0x1f || (long) value < -0x10) | |
2c3c46ad | 1317 | return bfd_reloc_overflow; |
efaa65c9 CM |
1318 | |
1319 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf82f; | |
1320 | bfd_put_16 (input_bfd, value, hit_data); | |
1321 | return bfd_reloc_ok; | |
efaa65c9 | 1322 | |
efaa65c9 | 1323 | |
efaa65c9 | 1324 | case R_ARM_THM_PC22: |
2c3c46ad | 1325 | /* thumb BL (branch long instruction). */ |
efaa65c9 | 1326 | { |
2c3c46ad CM |
1327 | bfd_vma relocation; |
1328 | boolean overflow = false; | |
1329 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
1330 | bfd_vma src_mask = 0x007FFFFE; | |
1331 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; | |
1332 | bfd_signed_vma reloc_signed_min = ~reloc_signed_max; | |
1333 | bfd_vma check; | |
1334 | bfd_signed_vma signed_check; | |
1335 | bfd_vma add; | |
1336 | bfd_signed_vma signed_add; | |
1337 | ||
bb3b4377 CM |
1338 | /* If it's not a call to thumb, assume call to arm */ |
1339 | if (sym_flags != STT_ARM_TFUNC) | |
2c3c46ad | 1340 | { |
a61c9386 NC |
1341 | if (elf32_thumb_to_arm_stub |
1342 | (info, sym_name, input_bfd, output_bfd, input_section, | |
1343 | hit_data, sym_sec, offset, addend, value)) | |
1344 | return bfd_reloc_ok; | |
1345 | else | |
1346 | return bfd_reloc_dangerous; | |
2c3c46ad CM |
1347 | } |
1348 | ||
1349 | relocation = value + addend; | |
1350 | relocation -= (input_section->output_section->vma + input_section->output_offset); | |
1351 | relocation -= offset; | |
1352 | ||
1353 | check = relocation >> howto->rightshift; | |
1354 | ||
1355 | /* If this is a signed value, the rightshift just dropped | |
1356 | leading 1 bits (assuming twos complement). */ | |
1357 | if ((bfd_signed_vma) relocation >= 0) | |
1358 | signed_check = check; | |
1359 | else | |
1360 | signed_check = (check | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->rightshift))); | |
1361 | ||
1362 | /* Get the value from the object file. */ | |
1363 | if (bfd_big_endian (input_bfd)) | |
1364 | add = (((insn) & 0x07ff0000) >> 4) | (((insn) & 0x7ff) << 1); | |
1365 | else | |
1366 | add = ((((insn) & 0x7ff) << 12) | (((insn) & 0x07ff0000) >> 15)); | |
1367 | ||
1368 | /* Get the value from the object file with an appropriate sign. | |
1369 | The expression involving howto->src_mask isolates the upper | |
1370 | bit of src_mask. If that bit is set in the value we are | |
1371 | adding, it is negative, and we subtract out that number times | |
1372 | two. If src_mask includes the highest possible bit, then we | |
1373 | can not get the upper bit, but that does not matter since | |
1374 | signed_add needs no adjustment to become negative in that case. */ | |
1375 | ||
1376 | signed_add = add; | |
1377 | ||
1378 | if ((add & (((~src_mask) >> 1) & src_mask)) != 0) | |
1379 | signed_add -= (((~src_mask) >> 1) & src_mask) << 1; | |
1380 | ||
1381 | /* Add the value from the object file, shifted so that it is a | |
1382 | straight number. */ | |
1383 | /* howto->bitpos == 0 */ | |
1384 | ||
1385 | signed_check += signed_add; | |
1386 | relocation += signed_add; | |
1387 | ||
1388 | /* Assumes two's complement. */ | |
1389 | if (signed_check > reloc_signed_max | |
1390 | || signed_check < reloc_signed_min) | |
1391 | overflow = true; | |
1392 | ||
1393 | /* Put RELOCATION into the correct bits: */ | |
1394 | ||
1395 | if (bfd_big_endian (input_bfd)) | |
1396 | relocation = (((relocation & 0xffe) >> 1) | ((relocation << 4) & 0x07ff0000)); | |
1397 | else | |
1398 | relocation = (((relocation & 0xffe) << 15) | ((relocation >> 12) & 0x7ff)); | |
1399 | ||
1400 | /* Add RELOCATION to the correct bits of X: */ | |
1401 | insn = ((insn & ~howto->dst_mask) | relocation); | |
1402 | ||
1403 | /* Put the relocated value back in the object file: */ | |
1404 | bfd_put_32 (input_bfd, insn, hit_data); | |
1405 | ||
1406 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
efaa65c9 CM |
1407 | } |
1408 | break; | |
2c3c46ad | 1409 | |
948beb4a CM |
1410 | case R_ARM_GNU_VTINHERIT: |
1411 | case R_ARM_GNU_VTENTRY: | |
1412 | return bfd_reloc_ok; | |
1413 | ||
efaa65c9 | 1414 | case R_ARM_SBREL32: |
a17e14c1 | 1415 | return bfd_reloc_notsupported; |
efaa65c9 CM |
1416 | |
1417 | case R_ARM_AMP_VCALL9: | |
1418 | return bfd_reloc_notsupported; | |
1419 | ||
1420 | case R_ARM_RSBREL32: | |
1421 | return bfd_reloc_notsupported; | |
1422 | ||
1423 | case R_ARM_THM_RPC22: | |
1424 | return bfd_reloc_notsupported; | |
1425 | ||
1426 | case R_ARM_RREL32: | |
1427 | return bfd_reloc_notsupported; | |
1428 | ||
1429 | case R_ARM_RABS32: | |
1430 | return bfd_reloc_notsupported; | |
1431 | ||
1432 | case R_ARM_RPC24: | |
1433 | return bfd_reloc_notsupported; | |
1434 | ||
1435 | case R_ARM_RBASE: | |
1436 | return bfd_reloc_notsupported; | |
1437 | ||
1438 | default: | |
1439 | return bfd_reloc_notsupported; | |
1440 | } | |
1441 | } | |
774852e9 NC |
1442 | |
1443 | ||
efaa65c9 CM |
1444 | /* Relocate an ARM ELF section. */ |
1445 | static boolean | |
1446 | elf32_arm_relocate_section (output_bfd, info, input_bfd, input_section, | |
2c3c46ad | 1447 | contents, relocs, local_syms, local_sections) |
efaa65c9 CM |
1448 | bfd *output_bfd; |
1449 | struct bfd_link_info *info; | |
1450 | bfd *input_bfd; | |
1451 | asection *input_section; | |
1452 | bfd_byte *contents; | |
1453 | Elf_Internal_Rela *relocs; | |
1454 | Elf_Internal_Sym *local_syms; | |
1455 | asection **local_sections; | |
1456 | { | |
1457 | Elf_Internal_Shdr *symtab_hdr; | |
1458 | struct elf_link_hash_entry **sym_hashes; | |
1459 | Elf_Internal_Rela *rel, *relend; | |
774852e9 | 1460 | const char *name; |
efaa65c9 CM |
1461 | |
1462 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1463 | sym_hashes = elf_sym_hashes (input_bfd); | |
1464 | ||
1465 | rel = relocs; | |
1466 | relend = relocs + input_section->reloc_count; | |
1467 | for (; rel < relend; rel++) | |
1468 | { | |
1469 | int r_type; | |
1470 | reloc_howto_type *howto; | |
1471 | unsigned long r_symndx; | |
1472 | Elf_Internal_Sym *sym; | |
1473 | asection *sec; | |
1474 | struct elf_link_hash_entry *h; | |
1475 | bfd_vma relocation; | |
1476 | bfd_reloc_status_type r; | |
1477 | ||
1478 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1479 | r_type = ELF32_R_TYPE (rel->r_info); | |
948beb4a CM |
1480 | |
1481 | if (r_type == R_ARM_GNU_VTENTRY | |
1482 | || r_type == R_ARM_GNU_VTINHERIT ) | |
1483 | continue; | |
1484 | ||
efaa65c9 CM |
1485 | howto = elf32_arm_howto_table + r_type; |
1486 | ||
1487 | if (info->relocateable) | |
1488 | { | |
1489 | /* This is a relocateable link. We don't have to change | |
2c3c46ad CM |
1490 | anything, unless the reloc is against a section symbol, |
1491 | in which case we have to adjust according to where the | |
1492 | section symbol winds up in the output section. */ | |
efaa65c9 CM |
1493 | if (r_symndx < symtab_hdr->sh_info) |
1494 | { | |
1495 | sym = local_syms + r_symndx; | |
1496 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1497 | { | |
1498 | sec = local_sections[r_symndx]; | |
1499 | rel->r_addend += sec->output_offset + sym->st_value; | |
1500 | } | |
1501 | } | |
1502 | ||
1503 | continue; | |
1504 | } | |
1505 | ||
1506 | /* This is a final link. */ | |
1507 | h = NULL; | |
1508 | sym = NULL; | |
1509 | sec = NULL; | |
1510 | if (r_symndx < symtab_hdr->sh_info) | |
1511 | { | |
1512 | sym = local_syms + r_symndx; | |
1513 | sec = local_sections[r_symndx]; | |
1514 | relocation = (sec->output_section->vma | |
1515 | + sec->output_offset | |
1516 | + sym->st_value); | |
1517 | } | |
1518 | else | |
1519 | { | |
1520 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1521 | while (h->root.type == bfd_link_hash_indirect | |
1522 | || h->root.type == bfd_link_hash_warning) | |
1523 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1524 | if (h->root.type == bfd_link_hash_defined | |
1525 | || h->root.type == bfd_link_hash_defweak) | |
1526 | { | |
1527 | sec = h->root.u.def.section; | |
1528 | relocation = (h->root.u.def.value | |
1529 | + sec->output_section->vma | |
1530 | + sec->output_offset); | |
1531 | } | |
1532 | else if (h->root.type == bfd_link_hash_undefweak) | |
1533 | relocation = 0; | |
1534 | else | |
1535 | { | |
2c3c46ad CM |
1536 | if (!((*info->callbacks->undefined_symbol) |
1537 | (info, h->root.root.string, input_bfd, | |
1538 | input_section, rel->r_offset))) | |
efaa65c9 CM |
1539 | return false; |
1540 | relocation = 0; | |
1541 | } | |
1542 | } | |
1543 | ||
774852e9 NC |
1544 | if (h != NULL) |
1545 | name = h->root.root.string; | |
1546 | else | |
1547 | { | |
1548 | name = (bfd_elf_string_from_elf_section | |
1549 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1550 | if (name == NULL || *name == '\0') | |
1551 | name = bfd_section_name (input_bfd, sec); | |
1552 | } | |
1553 | ||
efaa65c9 | 1554 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
2c3c46ad CM |
1555 | input_section, |
1556 | contents, rel->r_offset, | |
1557 | relocation, rel->r_addend, | |
774852e9 | 1558 | info, sec, name, |
a61c9386 NC |
1559 | (h ? ELF_ST_TYPE (h->type) : |
1560 | ELF_ST_TYPE (sym->st_info))); | |
efaa65c9 CM |
1561 | |
1562 | if (r != bfd_reloc_ok) | |
1563 | { | |
a61c9386 | 1564 | const char * msg = (const char *) 0; |
efaa65c9 | 1565 | |
efaa65c9 CM |
1566 | switch (r) |
1567 | { | |
1568 | case bfd_reloc_overflow: | |
2c3c46ad CM |
1569 | if (!((*info->callbacks->reloc_overflow) |
1570 | (info, name, howto->name, (bfd_vma) 0, | |
1571 | input_bfd, input_section, rel->r_offset))) | |
efaa65c9 CM |
1572 | return false; |
1573 | break; | |
1574 | ||
1575 | case bfd_reloc_undefined: | |
2c3c46ad CM |
1576 | if (!((*info->callbacks->undefined_symbol) |
1577 | (info, name, input_bfd, input_section, | |
1578 | rel->r_offset))) | |
efaa65c9 CM |
1579 | return false; |
1580 | break; | |
1581 | ||
1582 | case bfd_reloc_outofrange: | |
2c3c46ad | 1583 | msg = _ ("internal error: out of range error"); |
efaa65c9 CM |
1584 | goto common_error; |
1585 | ||
1586 | case bfd_reloc_notsupported: | |
2c3c46ad | 1587 | msg = _ ("internal error: unsupported relocation error"); |
efaa65c9 CM |
1588 | goto common_error; |
1589 | ||
1590 | case bfd_reloc_dangerous: | |
2c3c46ad | 1591 | msg = _ ("internal error: dangerous error"); |
efaa65c9 CM |
1592 | goto common_error; |
1593 | ||
1594 | default: | |
2c3c46ad | 1595 | msg = _ ("internal error: unknown error"); |
efaa65c9 CM |
1596 | /* fall through */ |
1597 | ||
1598 | common_error: | |
1599 | if (!((*info->callbacks->warning) | |
1600 | (info, msg, name, input_bfd, input_section, | |
1601 | rel->r_offset))) | |
1602 | return false; | |
1603 | break; | |
1604 | } | |
1605 | } | |
1606 | } | |
1607 | ||
1608 | return true; | |
1609 | } | |
1610 | ||
0e7361bc NC |
1611 | /* Function to keep ARM specific flags in the ELF header. */ |
1612 | static boolean | |
1613 | elf32_arm_set_private_flags (abfd, flags) | |
2c3c46ad | 1614 | bfd *abfd; |
0e7361bc NC |
1615 | flagword flags; |
1616 | { | |
1617 | if (elf_flags_init (abfd) | |
1618 | && elf_elfheader (abfd)->e_flags != flags) | |
1619 | { | |
1620 | if (flags & EF_INTERWORK) | |
2c3c46ad | 1621 | _bfd_error_handler (_ ("\ |
0e7361bc NC |
1622 | Warning: Not setting interwork flag of %s since it has already been specified as non-interworking"), |
1623 | bfd_get_filename (abfd)); | |
1624 | else | |
2c3c46ad | 1625 | _bfd_error_handler (_ ("\ |
0e7361bc | 1626 | Warning: Clearing the interwork flag of %s due to outside request"), |
2c3c46ad | 1627 | bfd_get_filename (abfd)); |
0e7361bc NC |
1628 | } |
1629 | else | |
1630 | { | |
1631 | elf_elfheader (abfd)->e_flags = flags; | |
1632 | elf_flags_init (abfd) = true; | |
1633 | } | |
2c3c46ad | 1634 | |
0e7361bc NC |
1635 | return true; |
1636 | } | |
1637 | ||
1638 | /* Copy backend specific data from one object module to another */ | |
1639 | static boolean | |
1640 | elf32_arm_copy_private_bfd_data (ibfd, obfd) | |
2c3c46ad CM |
1641 | bfd *ibfd; |
1642 | bfd *obfd; | |
0e7361bc NC |
1643 | { |
1644 | flagword in_flags; | |
1645 | flagword out_flags; | |
2c3c46ad CM |
1646 | |
1647 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
0e7361bc NC |
1648 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
1649 | return true; | |
1650 | ||
2c3c46ad | 1651 | in_flags = elf_elfheader (ibfd)->e_flags; |
0e7361bc | 1652 | out_flags = elf_elfheader (obfd)->e_flags; |
2c3c46ad CM |
1653 | |
1654 | if (elf_flags_init (obfd) && in_flags != out_flags) | |
0e7361bc NC |
1655 | { |
1656 | /* Cannot mix PIC and non-PIC code. */ | |
1657 | if ((in_flags & EF_PIC) != (out_flags & EF_PIC)) | |
1658 | return false; | |
2c3c46ad | 1659 | |
0e7361bc NC |
1660 | /* Cannot mix APCS26 and APCS32 code. */ |
1661 | if ((in_flags & EF_APCS_26) != (out_flags & EF_APCS_26)) | |
1662 | return false; | |
2c3c46ad | 1663 | |
0e7361bc NC |
1664 | /* Cannot mix float APCS and non-float APCS code. */ |
1665 | if ((in_flags & EF_APCS_FLOAT) != (out_flags & EF_APCS_FLOAT)) | |
1666 | return false; | |
1667 | ||
1668 | /* If the src and dest have different interworking flags | |
2c3c46ad | 1669 | then turn off the interworking bit. */ |
0e7361bc NC |
1670 | if ((in_flags & EF_INTERWORK) != (out_flags & EF_INTERWORK)) |
1671 | { | |
1672 | if (out_flags & EF_INTERWORK) | |
2c3c46ad | 1673 | _bfd_error_handler (_ ("\ |
0e7361bc | 1674 | Warning: Clearing the interwork flag in %s because non-interworking code in %s has been linked with it"), |
2c3c46ad CM |
1675 | bfd_get_filename (obfd), bfd_get_filename (ibfd)); |
1676 | ||
1677 | in_flags &= ~EF_INTERWORK; | |
0e7361bc NC |
1678 | } |
1679 | } | |
1680 | ||
1681 | elf_elfheader (obfd)->e_flags = in_flags; | |
1682 | elf_flags_init (obfd) = true; | |
2c3c46ad | 1683 | |
0e7361bc NC |
1684 | return true; |
1685 | } | |
1686 | ||
1687 | /* Merge backend specific data from an object file to the output | |
1688 | object file when linking. */ | |
1689 | static boolean | |
1690 | elf32_arm_merge_private_bfd_data (ibfd, obfd) | |
2c3c46ad CM |
1691 | bfd *ibfd; |
1692 | bfd *obfd; | |
0e7361bc NC |
1693 | { |
1694 | flagword out_flags; | |
1695 | flagword in_flags; | |
1696 | ||
2c3c46ad | 1697 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
0e7361bc NC |
1698 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
1699 | return true; | |
1700 | ||
1701 | /* The input BFD must have had its flags initialised. */ | |
a17e14c1 CM |
1702 | /* The following seems bogus to me -- The flags are initialized in |
1703 | the assembler but I don't think an elf_flags_init field is | |
1704 | written into the object */ | |
1705 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
2c3c46ad CM |
1706 | |
1707 | in_flags = elf_elfheader (ibfd)->e_flags; | |
0e7361bc NC |
1708 | out_flags = elf_elfheader (obfd)->e_flags; |
1709 | ||
2c3c46ad | 1710 | if (!elf_flags_init (obfd)) |
0e7361bc NC |
1711 | { |
1712 | /* If the input is the default architecture then do not | |
2c3c46ad CM |
1713 | bother setting the flags for the output architecture, |
1714 | instead allow future merges to do this. If no future | |
1715 | merges ever set these flags then they will retain their | |
1716 | unitialised values, which surprise surprise, correspond | |
1717 | to the default values. */ | |
0e7361bc NC |
1718 | if (bfd_get_arch_info (ibfd)->the_default) |
1719 | return true; | |
2c3c46ad | 1720 | |
0e7361bc NC |
1721 | elf_flags_init (obfd) = true; |
1722 | elf_elfheader (obfd)->e_flags = in_flags; | |
1723 | ||
1724 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1725 | && bfd_get_arch_info (obfd)->the_default) | |
1726 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
1727 | ||
1728 | return true; | |
1729 | } | |
1730 | ||
1731 | /* Check flag compatibility. */ | |
1732 | if (in_flags == out_flags) | |
1733 | return true; | |
1734 | ||
1735 | /* Complain about various flag mismatches. */ | |
2c3c46ad | 1736 | |
0e7361bc | 1737 | if ((in_flags & EF_APCS_26) != (out_flags & EF_APCS_26)) |
2c3c46ad | 1738 | _bfd_error_handler (_ ("\ |
0e7361bc NC |
1739 | Error: %s compiled for APCS-%d, whereas %s is compiled for APCS-%d"), |
1740 | bfd_get_filename (ibfd), | |
1741 | in_flags & EF_APCS_26 ? 26 : 32, | |
1742 | bfd_get_filename (obfd), | |
1743 | out_flags & EF_APCS_26 ? 26 : 32); | |
2c3c46ad | 1744 | |
0e7361bc | 1745 | if ((in_flags & EF_APCS_FLOAT) != (out_flags & EF_APCS_FLOAT)) |
2c3c46ad | 1746 | _bfd_error_handler (_ ("\ |
0e7361bc NC |
1747 | Error: %s passes floats in %s registers, whereas %s passes them in %s registers"), |
1748 | bfd_get_filename (ibfd), | |
2c3c46ad | 1749 | in_flags & EF_APCS_FLOAT ? _ ("float") : _ ("integer"), |
0e7361bc | 1750 | bfd_get_filename (obfd), |
2c3c46ad CM |
1751 | out_flags & EF_APCS_26 ? _ ("float") : _ ("integer")); |
1752 | ||
0e7361bc | 1753 | if ((in_flags & EF_PIC) != (out_flags & EF_PIC)) |
2c3c46ad | 1754 | _bfd_error_handler (_ ("\ |
0e7361bc NC |
1755 | Error: %s is compiled as position %s code, whereas %s is not"), |
1756 | bfd_get_filename (ibfd), | |
2c3c46ad | 1757 | in_flags & EF_PIC ? _ ("independent") : _ ("dependent"), |
0e7361bc NC |
1758 | bfd_get_filename (obfd)); |
1759 | ||
1760 | /* Interworking mismatch is only a warning. */ | |
1761 | if ((in_flags & EF_INTERWORK) != (out_flags & EF_INTERWORK)) | |
1762 | { | |
2c3c46ad | 1763 | _bfd_error_handler (_ ("\ |
0e7361bc NC |
1764 | Warning: %s %s interworking, whereas %s %s"), |
1765 | bfd_get_filename (ibfd), | |
2c3c46ad | 1766 | in_flags & EF_INTERWORK ? _ ("supports") : _ ("does not support"), |
0e7361bc | 1767 | bfd_get_filename (obfd), |
2c3c46ad | 1768 | out_flags & EF_INTERWORK ? _ ("does not") : _ ("does")); |
0e7361bc NC |
1769 | return true; |
1770 | } | |
1771 | ||
1772 | return false; | |
1773 | } | |
1774 | ||
1775 | /* Display the flags field */ | |
1776 | static boolean | |
1777 | elf32_arm_print_private_bfd_data (abfd, ptr) | |
2c3c46ad CM |
1778 | bfd *abfd; |
1779 | PTR ptr; | |
0e7361bc | 1780 | { |
2c3c46ad CM |
1781 | FILE *file = (FILE *) ptr; |
1782 | ||
0e7361bc NC |
1783 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
1784 | ||
1785 | /* Print normal ELF private data. */ | |
1786 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
1787 | ||
1788 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
2c3c46ad | 1789 | |
0e7361bc | 1790 | /* xgettext:c-format */ |
2c3c46ad | 1791 | fprintf (file, _ ("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
0e7361bc NC |
1792 | |
1793 | if (elf_elfheader (abfd)->e_flags & EF_INTERWORK) | |
2c3c46ad | 1794 | fprintf (file, _ (" [interworking enabled]")); |
0e7361bc | 1795 | else |
2c3c46ad CM |
1796 | fprintf (file, _ (" [interworking not enabled]")); |
1797 | ||
0e7361bc | 1798 | if (elf_elfheader (abfd)->e_flags & EF_APCS_26) |
2c3c46ad | 1799 | fprintf (file, _ (" [APCS-26]")); |
0e7361bc | 1800 | else |
2c3c46ad CM |
1801 | fprintf (file, _ (" [APCS-32]")); |
1802 | ||
0e7361bc | 1803 | if (elf_elfheader (abfd)->e_flags & EF_APCS_FLOAT) |
2c3c46ad | 1804 | fprintf (file, _ (" [floats passed in float registers]")); |
0e7361bc | 1805 | else |
2c3c46ad CM |
1806 | fprintf (file, _ (" [floats passed in integer registers]")); |
1807 | ||
0e7361bc | 1808 | if (elf_elfheader (abfd)->e_flags & EF_PIC) |
2c3c46ad | 1809 | fprintf (file, _ (" [position independent]")); |
0e7361bc | 1810 | else |
2c3c46ad CM |
1811 | fprintf (file, _ (" [absolute position]")); |
1812 | ||
0e7361bc | 1813 | fputc ('\n', file); |
2c3c46ad | 1814 | |
0e7361bc NC |
1815 | return true; |
1816 | } | |
1817 | ||
bb3b4377 | 1818 | static int |
948beb4a | 1819 | elf32_arm_get_symbol_type (elf_sym, type) |
a61c9386 | 1820 | Elf_Internal_Sym * elf_sym; |
948beb4a | 1821 | int type; |
bb3b4377 | 1822 | { |
948beb4a CM |
1823 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_ARM_TFUNC) |
1824 | return ELF_ST_TYPE (elf_sym->st_info); | |
1825 | else | |
1826 | return type; | |
bb3b4377 CM |
1827 | } |
1828 | ||
948beb4a CM |
1829 | static asection * |
1830 | elf32_arm_gc_mark_hook (abfd, info, rel, h, sym) | |
1831 | bfd *abfd; | |
1832 | struct bfd_link_info *info; | |
1833 | Elf_Internal_Rela *rel; | |
1834 | struct elf_link_hash_entry *h; | |
1835 | Elf_Internal_Sym *sym; | |
1836 | { | |
1837 | if (h != NULL) | |
1838 | { | |
1839 | switch (ELF32_R_TYPE (rel->r_info)) | |
1840 | { | |
1841 | case R_ARM_GNU_VTINHERIT: | |
1842 | case R_ARM_GNU_VTENTRY: | |
1843 | break; | |
1844 | ||
1845 | default: | |
1846 | printf("h is %s\n", h->root.root.string); | |
1847 | switch (h->root.type) | |
1848 | { | |
1849 | case bfd_link_hash_defined: | |
1850 | case bfd_link_hash_defweak: | |
1851 | return h->root.u.def.section; | |
1852 | ||
1853 | case bfd_link_hash_common: | |
1854 | return h->root.u.c.p->section; | |
1855 | } | |
1856 | } | |
1857 | } | |
1858 | else | |
1859 | { | |
1860 | if (!(elf_bad_symtab (abfd) | |
1861 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
1862 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
1863 | && sym->st_shndx != SHN_COMMON)) | |
1864 | { | |
1865 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
1866 | } | |
1867 | } | |
1868 | return NULL; | |
1869 | } | |
0e7361bc | 1870 | |
948beb4a CM |
1871 | static boolean |
1872 | elf32_arm_gc_sweep_hook (abfd, info, sec, relocs) | |
1873 | bfd *abfd; | |
1874 | struct bfd_link_info *info; | |
1875 | asection *sec; | |
1876 | const Elf_Internal_Rela *relocs; | |
1877 | { | |
1878 | /* we don't use got and plt entries for armelf */ | |
1879 | return true; | |
1880 | } | |
a61c9386 | 1881 | |
948beb4a CM |
1882 | /* Look through the relocs for a section during the first phase. |
1883 | Since we don't do .gots or .plts, we just need to consider the | |
1884 | virtual table relocs for gc. */ | |
1885 | ||
1886 | static boolean | |
1887 | elf32_arm_check_relocs (abfd, info, sec, relocs) | |
1888 | bfd *abfd; | |
1889 | struct bfd_link_info *info; | |
1890 | asection *sec; | |
1891 | const Elf_Internal_Rela *relocs; | |
1892 | { | |
1893 | Elf_Internal_Shdr *symtab_hdr; | |
1894 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
1895 | const Elf_Internal_Rela *rel; | |
1896 | const Elf_Internal_Rela *rel_end; | |
1897 | ||
1898 | if (info->relocateable) | |
1899 | return true; | |
1900 | ||
1901 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1902 | sym_hashes = elf_sym_hashes (abfd); | |
1903 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); | |
1904 | if (!elf_bad_symtab (abfd)) | |
1905 | sym_hashes_end -= symtab_hdr->sh_info; | |
1906 | ||
1907 | rel_end = relocs + sec->reloc_count; | |
1908 | for (rel = relocs; rel < rel_end; rel++) | |
1909 | { | |
1910 | struct elf_link_hash_entry *h; | |
1911 | unsigned long r_symndx; | |
1912 | ||
1913 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1914 | if (r_symndx < symtab_hdr->sh_info) | |
1915 | h = NULL; | |
1916 | else | |
1917 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1918 | ||
1919 | switch (ELF32_R_TYPE (rel->r_info)) | |
1920 | { | |
1921 | /* This relocation describes the C++ object vtable hierarchy. | |
1922 | Reconstruct it for later use during GC. */ | |
1923 | case R_ARM_GNU_VTINHERIT: | |
1924 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
1925 | return false; | |
1926 | break; | |
1927 | ||
1928 | /* This relocation describes which C++ vtable entries are actually | |
1929 | used. Record for later use during GC. */ | |
1930 | case R_ARM_GNU_VTENTRY: | |
1931 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
1932 | return false; | |
1933 | break; | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | return true; | |
1938 | } | |
a61c9386 | 1939 | |
948beb4a | 1940 | |
a61c9386 NC |
1941 | /* Find the nearest line to a particular section and offset, for error |
1942 | reporting. This code is a duplicate of the code in elf.c, except | |
1943 | that it also accepts STT_ARM_TFUNC as a symbol that names a function. */ | |
1944 | ||
1945 | boolean | |
1946 | elf32_arm_find_nearest_line | |
1947 | (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) | |
1948 | bfd * abfd; | |
1949 | asection * section; | |
1950 | asymbol ** symbols; | |
1951 | bfd_vma offset; | |
1952 | CONST char ** filename_ptr; | |
1953 | CONST char ** functionname_ptr; | |
1954 | unsigned int * line_ptr; | |
1955 | { | |
1956 | boolean found; | |
1957 | const char * filename; | |
1958 | asymbol * func; | |
1959 | bfd_vma low_func; | |
1960 | asymbol ** p; | |
1961 | ||
1962 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
1963 | filename_ptr, functionname_ptr, | |
1964 | line_ptr)) | |
1965 | return true; | |
1966 | ||
1967 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
1968 | &found, filename_ptr, | |
1969 | functionname_ptr, line_ptr, | |
1970 | &elf_tdata (abfd)->line_info)) | |
1971 | return false; | |
1972 | ||
1973 | if (found) | |
1974 | return true; | |
1975 | ||
1976 | if (symbols == NULL) | |
1977 | return false; | |
1978 | ||
1979 | filename = NULL; | |
1980 | func = NULL; | |
1981 | low_func = 0; | |
1982 | ||
1983 | for (p = symbols; *p != NULL; p++) | |
1984 | { | |
1985 | elf_symbol_type *q; | |
1986 | ||
1987 | q = (elf_symbol_type *) *p; | |
1988 | ||
1989 | if (bfd_get_section (&q->symbol) != section) | |
1990 | continue; | |
1991 | ||
1992 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
1993 | { | |
1994 | default: | |
1995 | break; | |
1996 | case STT_FILE: | |
1997 | filename = bfd_asymbol_name (&q->symbol); | |
1998 | break; | |
1999 | case STT_NOTYPE: | |
2000 | case STT_FUNC: | |
2001 | case STT_ARM_TFUNC: | |
2002 | if (q->symbol.section == section | |
2003 | && q->symbol.value >= low_func | |
2004 | && q->symbol.value <= offset) | |
2005 | { | |
2006 | func = (asymbol *) q; | |
2007 | low_func = q->symbol.value; | |
2008 | } | |
2009 | break; | |
2010 | } | |
2011 | } | |
2012 | ||
2013 | if (func == NULL) | |
2014 | return false; | |
2015 | ||
2016 | *filename_ptr = filename; | |
2017 | *functionname_ptr = bfd_asymbol_name (func); | |
2018 | *line_ptr = 0; | |
2019 | ||
2020 | return true; | |
2021 | } | |
2022 | ||
2023 | ||
efaa65c9 CM |
2024 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec |
2025 | #define TARGET_LITTLE_NAME "elf32-littlearm" | |
2026 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vec | |
2027 | #define TARGET_BIG_NAME "elf32-bigarm" | |
2028 | #define ELF_ARCH bfd_arch_arm | |
2029 | #define ELF_MACHINE_CODE EM_ARM | |
2030 | ||
0e7361bc NC |
2031 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
2032 | #define elf_info_to_howto elf32_arm_info_to_howto | |
2033 | #define elf_info_to_howto_rel 0 | |
2034 | #define elf_backend_relocate_section elf32_arm_relocate_section | |
2035 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data | |
2036 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
2037 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags | |
2038 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
2c3c46ad | 2039 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create |
a61c9386 | 2040 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
bb3b4377 | 2041 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type |
948beb4a CM |
2042 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook |
2043 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook | |
2044 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
2045 | ||
2046 | #define elf_backend_can_gc_sections 1 | |
efaa65c9 CM |
2047 | #define elf_symbol_leading_char '_' |
2048 | ||
2049 | #include "elf32-target.h" |