1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
24 #include "libiberty.h"
27 #include "elf-vxworks.h"
30 /* Return the relocation section associated with NAME. HTAB is the
31 bfd's elf32_arm_link_hash_entry. */
32 #define RELOC_SECTION(HTAB, NAME) \
33 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
35 /* Return size of a relocation entry. HTAB is the bfd's
36 elf32_arm_link_hash_entry. */
37 #define RELOC_SIZE(HTAB) \
39 ? sizeof (Elf32_External_Rel) \
40 : sizeof (Elf32_External_Rela))
42 /* Return function to swap relocations in. HTAB is the bfd's
43 elf32_arm_link_hash_entry. */
44 #define SWAP_RELOC_IN(HTAB) \
46 ? bfd_elf32_swap_reloc_in \
47 : bfd_elf32_swap_reloca_in)
49 /* Return function to swap relocations out. HTAB is the bfd's
50 elf32_arm_link_hash_entry. */
51 #define SWAP_RELOC_OUT(HTAB) \
53 ? bfd_elf32_swap_reloc_out \
54 : bfd_elf32_swap_reloca_out)
56 #define elf_info_to_howto 0
57 #define elf_info_to_howto_rel elf32_arm_info_to_howto
59 #define ARM_ELF_ABI_VERSION 0
60 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
62 static struct elf_backend_data elf32_arm_vxworks_bed
;
64 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
65 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
68 static reloc_howto_type elf32_arm_howto_table_1
[] =
71 HOWTO (R_ARM_NONE
, /* type */
73 0, /* size (0 = byte, 1 = short, 2 = long) */
75 FALSE
, /* pc_relative */
77 complain_overflow_dont
,/* complain_on_overflow */
78 bfd_elf_generic_reloc
, /* special_function */
79 "R_ARM_NONE", /* name */
80 FALSE
, /* partial_inplace */
83 FALSE
), /* pcrel_offset */
85 HOWTO (R_ARM_PC24
, /* type */
87 2, /* size (0 = byte, 1 = short, 2 = long) */
89 TRUE
, /* pc_relative */
91 complain_overflow_signed
,/* complain_on_overflow */
92 bfd_elf_generic_reloc
, /* special_function */
93 "R_ARM_PC24", /* name */
94 FALSE
, /* partial_inplace */
95 0x00ffffff, /* src_mask */
96 0x00ffffff, /* dst_mask */
97 TRUE
), /* pcrel_offset */
100 HOWTO (R_ARM_ABS32
, /* type */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
104 FALSE
, /* pc_relative */
106 complain_overflow_bitfield
,/* complain_on_overflow */
107 bfd_elf_generic_reloc
, /* special_function */
108 "R_ARM_ABS32", /* name */
109 FALSE
, /* partial_inplace */
110 0xffffffff, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE
), /* pcrel_offset */
114 /* standard 32bit pc-relative reloc */
115 HOWTO (R_ARM_REL32
, /* type */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
119 TRUE
, /* pc_relative */
121 complain_overflow_bitfield
,/* complain_on_overflow */
122 bfd_elf_generic_reloc
, /* special_function */
123 "R_ARM_REL32", /* name */
124 FALSE
, /* partial_inplace */
125 0xffffffff, /* src_mask */
126 0xffffffff, /* dst_mask */
127 TRUE
), /* pcrel_offset */
129 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
130 HOWTO (R_ARM_LDR_PC_G0
, /* type */
132 0, /* size (0 = byte, 1 = short, 2 = long) */
134 TRUE
, /* pc_relative */
136 complain_overflow_dont
,/* complain_on_overflow */
137 bfd_elf_generic_reloc
, /* special_function */
138 "R_ARM_LDR_PC_G0", /* name */
139 FALSE
, /* partial_inplace */
140 0xffffffff, /* src_mask */
141 0xffffffff, /* dst_mask */
142 TRUE
), /* pcrel_offset */
144 /* 16 bit absolute */
145 HOWTO (R_ARM_ABS16
, /* type */
147 1, /* size (0 = byte, 1 = short, 2 = long) */
149 FALSE
, /* pc_relative */
151 complain_overflow_bitfield
,/* complain_on_overflow */
152 bfd_elf_generic_reloc
, /* special_function */
153 "R_ARM_ABS16", /* name */
154 FALSE
, /* partial_inplace */
155 0x0000ffff, /* src_mask */
156 0x0000ffff, /* dst_mask */
157 FALSE
), /* pcrel_offset */
159 /* 12 bit absolute */
160 HOWTO (R_ARM_ABS12
, /* type */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
164 FALSE
, /* pc_relative */
166 complain_overflow_bitfield
,/* complain_on_overflow */
167 bfd_elf_generic_reloc
, /* special_function */
168 "R_ARM_ABS12", /* name */
169 FALSE
, /* partial_inplace */
170 0x00000fff, /* src_mask */
171 0x00000fff, /* dst_mask */
172 FALSE
), /* pcrel_offset */
174 HOWTO (R_ARM_THM_ABS5
, /* type */
176 1, /* size (0 = byte, 1 = short, 2 = long) */
178 FALSE
, /* pc_relative */
180 complain_overflow_bitfield
,/* complain_on_overflow */
181 bfd_elf_generic_reloc
, /* special_function */
182 "R_ARM_THM_ABS5", /* name */
183 FALSE
, /* partial_inplace */
184 0x000007e0, /* src_mask */
185 0x000007e0, /* dst_mask */
186 FALSE
), /* pcrel_offset */
189 HOWTO (R_ARM_ABS8
, /* type */
191 0, /* size (0 = byte, 1 = short, 2 = long) */
193 FALSE
, /* pc_relative */
195 complain_overflow_bitfield
,/* complain_on_overflow */
196 bfd_elf_generic_reloc
, /* special_function */
197 "R_ARM_ABS8", /* name */
198 FALSE
, /* partial_inplace */
199 0x000000ff, /* src_mask */
200 0x000000ff, /* dst_mask */
201 FALSE
), /* pcrel_offset */
203 HOWTO (R_ARM_SBREL32
, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE
, /* pc_relative */
209 complain_overflow_dont
,/* complain_on_overflow */
210 bfd_elf_generic_reloc
, /* special_function */
211 "R_ARM_SBREL32", /* name */
212 FALSE
, /* partial_inplace */
213 0xffffffff, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE
), /* pcrel_offset */
217 HOWTO (R_ARM_THM_CALL
, /* type */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
221 TRUE
, /* pc_relative */
223 complain_overflow_signed
,/* complain_on_overflow */
224 bfd_elf_generic_reloc
, /* special_function */
225 "R_ARM_THM_CALL", /* name */
226 FALSE
, /* partial_inplace */
227 0x07ff07ff, /* src_mask */
228 0x07ff07ff, /* dst_mask */
229 TRUE
), /* pcrel_offset */
231 HOWTO (R_ARM_THM_PC8
, /* type */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
235 TRUE
, /* pc_relative */
237 complain_overflow_signed
,/* complain_on_overflow */
238 bfd_elf_generic_reloc
, /* special_function */
239 "R_ARM_THM_PC8", /* name */
240 FALSE
, /* partial_inplace */
241 0x000000ff, /* src_mask */
242 0x000000ff, /* dst_mask */
243 TRUE
), /* pcrel_offset */
245 HOWTO (R_ARM_BREL_ADJ
, /* type */
247 1, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE
, /* pc_relative */
251 complain_overflow_signed
,/* complain_on_overflow */
252 bfd_elf_generic_reloc
, /* special_function */
253 "R_ARM_BREL_ADJ", /* name */
254 FALSE
, /* partial_inplace */
255 0xffffffff, /* src_mask */
256 0xffffffff, /* dst_mask */
257 FALSE
), /* pcrel_offset */
259 HOWTO (R_ARM_SWI24
, /* type */
261 0, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE
, /* pc_relative */
265 complain_overflow_signed
,/* complain_on_overflow */
266 bfd_elf_generic_reloc
, /* special_function */
267 "R_ARM_SWI24", /* name */
268 FALSE
, /* partial_inplace */
269 0x00000000, /* src_mask */
270 0x00000000, /* dst_mask */
271 FALSE
), /* pcrel_offset */
273 HOWTO (R_ARM_THM_SWI8
, /* type */
275 0, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE
, /* pc_relative */
279 complain_overflow_signed
,/* complain_on_overflow */
280 bfd_elf_generic_reloc
, /* special_function */
281 "R_ARM_SWI8", /* name */
282 FALSE
, /* partial_inplace */
283 0x00000000, /* src_mask */
284 0x00000000, /* dst_mask */
285 FALSE
), /* pcrel_offset */
287 /* BLX instruction for the ARM. */
288 HOWTO (R_ARM_XPC25
, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 TRUE
, /* pc_relative */
294 complain_overflow_signed
,/* complain_on_overflow */
295 bfd_elf_generic_reloc
, /* special_function */
296 "R_ARM_XPC25", /* name */
297 FALSE
, /* partial_inplace */
298 0x00ffffff, /* src_mask */
299 0x00ffffff, /* dst_mask */
300 TRUE
), /* pcrel_offset */
302 /* BLX instruction for the Thumb. */
303 HOWTO (R_ARM_THM_XPC22
, /* type */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
307 TRUE
, /* pc_relative */
309 complain_overflow_signed
,/* complain_on_overflow */
310 bfd_elf_generic_reloc
, /* special_function */
311 "R_ARM_THM_XPC22", /* name */
312 FALSE
, /* partial_inplace */
313 0x07ff07ff, /* src_mask */
314 0x07ff07ff, /* dst_mask */
315 TRUE
), /* pcrel_offset */
317 /* Dynamic TLS relocations. */
319 HOWTO (R_ARM_TLS_DTPMOD32
, /* type */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
323 FALSE
, /* pc_relative */
325 complain_overflow_bitfield
,/* complain_on_overflow */
326 bfd_elf_generic_reloc
, /* special_function */
327 "R_ARM_TLS_DTPMOD32", /* name */
328 TRUE
, /* partial_inplace */
329 0xffffffff, /* src_mask */
330 0xffffffff, /* dst_mask */
331 FALSE
), /* pcrel_offset */
333 HOWTO (R_ARM_TLS_DTPOFF32
, /* type */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
337 FALSE
, /* pc_relative */
339 complain_overflow_bitfield
,/* complain_on_overflow */
340 bfd_elf_generic_reloc
, /* special_function */
341 "R_ARM_TLS_DTPOFF32", /* name */
342 TRUE
, /* partial_inplace */
343 0xffffffff, /* src_mask */
344 0xffffffff, /* dst_mask */
345 FALSE
), /* pcrel_offset */
347 HOWTO (R_ARM_TLS_TPOFF32
, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE
, /* pc_relative */
353 complain_overflow_bitfield
,/* complain_on_overflow */
354 bfd_elf_generic_reloc
, /* special_function */
355 "R_ARM_TLS_TPOFF32", /* name */
356 TRUE
, /* partial_inplace */
357 0xffffffff, /* src_mask */
358 0xffffffff, /* dst_mask */
359 FALSE
), /* pcrel_offset */
361 /* Relocs used in ARM Linux */
363 HOWTO (R_ARM_COPY
, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 FALSE
, /* pc_relative */
369 complain_overflow_bitfield
,/* complain_on_overflow */
370 bfd_elf_generic_reloc
, /* special_function */
371 "R_ARM_COPY", /* name */
372 TRUE
, /* partial_inplace */
373 0xffffffff, /* src_mask */
374 0xffffffff, /* dst_mask */
375 FALSE
), /* pcrel_offset */
377 HOWTO (R_ARM_GLOB_DAT
, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 FALSE
, /* pc_relative */
383 complain_overflow_bitfield
,/* complain_on_overflow */
384 bfd_elf_generic_reloc
, /* special_function */
385 "R_ARM_GLOB_DAT", /* name */
386 TRUE
, /* partial_inplace */
387 0xffffffff, /* src_mask */
388 0xffffffff, /* dst_mask */
389 FALSE
), /* pcrel_offset */
391 HOWTO (R_ARM_JUMP_SLOT
, /* type */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
395 FALSE
, /* pc_relative */
397 complain_overflow_bitfield
,/* complain_on_overflow */
398 bfd_elf_generic_reloc
, /* special_function */
399 "R_ARM_JUMP_SLOT", /* name */
400 TRUE
, /* partial_inplace */
401 0xffffffff, /* src_mask */
402 0xffffffff, /* dst_mask */
403 FALSE
), /* pcrel_offset */
405 HOWTO (R_ARM_RELATIVE
, /* type */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
409 FALSE
, /* pc_relative */
411 complain_overflow_bitfield
,/* complain_on_overflow */
412 bfd_elf_generic_reloc
, /* special_function */
413 "R_ARM_RELATIVE", /* name */
414 TRUE
, /* partial_inplace */
415 0xffffffff, /* src_mask */
416 0xffffffff, /* dst_mask */
417 FALSE
), /* pcrel_offset */
419 HOWTO (R_ARM_GOTOFF32
, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE
, /* pc_relative */
425 complain_overflow_bitfield
,/* complain_on_overflow */
426 bfd_elf_generic_reloc
, /* special_function */
427 "R_ARM_GOTOFF32", /* name */
428 TRUE
, /* partial_inplace */
429 0xffffffff, /* src_mask */
430 0xffffffff, /* dst_mask */
431 FALSE
), /* pcrel_offset */
433 HOWTO (R_ARM_GOTPC
, /* type */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
437 TRUE
, /* pc_relative */
439 complain_overflow_bitfield
,/* complain_on_overflow */
440 bfd_elf_generic_reloc
, /* special_function */
441 "R_ARM_GOTPC", /* name */
442 TRUE
, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE
), /* pcrel_offset */
447 HOWTO (R_ARM_GOT32
, /* type */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
451 FALSE
, /* pc_relative */
453 complain_overflow_bitfield
,/* complain_on_overflow */
454 bfd_elf_generic_reloc
, /* special_function */
455 "R_ARM_GOT32", /* name */
456 TRUE
, /* partial_inplace */
457 0xffffffff, /* src_mask */
458 0xffffffff, /* dst_mask */
459 FALSE
), /* pcrel_offset */
461 HOWTO (R_ARM_PLT32
, /* type */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
465 TRUE
, /* pc_relative */
467 complain_overflow_bitfield
,/* complain_on_overflow */
468 bfd_elf_generic_reloc
, /* special_function */
469 "R_ARM_PLT32", /* name */
470 FALSE
, /* partial_inplace */
471 0x00ffffff, /* src_mask */
472 0x00ffffff, /* dst_mask */
473 TRUE
), /* pcrel_offset */
475 HOWTO (R_ARM_CALL
, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 TRUE
, /* pc_relative */
481 complain_overflow_signed
,/* complain_on_overflow */
482 bfd_elf_generic_reloc
, /* special_function */
483 "R_ARM_CALL", /* name */
484 FALSE
, /* partial_inplace */
485 0x00ffffff, /* src_mask */
486 0x00ffffff, /* dst_mask */
487 TRUE
), /* pcrel_offset */
489 HOWTO (R_ARM_JUMP24
, /* type */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
493 TRUE
, /* pc_relative */
495 complain_overflow_signed
,/* complain_on_overflow */
496 bfd_elf_generic_reloc
, /* special_function */
497 "R_ARM_JUMP24", /* name */
498 FALSE
, /* partial_inplace */
499 0x00ffffff, /* src_mask */
500 0x00ffffff, /* dst_mask */
501 TRUE
), /* pcrel_offset */
503 HOWTO (R_ARM_THM_JUMP24
, /* type */
505 2, /* size (0 = byte, 1 = short, 2 = long) */
507 TRUE
, /* pc_relative */
509 complain_overflow_signed
,/* complain_on_overflow */
510 bfd_elf_generic_reloc
, /* special_function */
511 "R_ARM_THM_JUMP24", /* name */
512 FALSE
, /* partial_inplace */
513 0x07ff2fff, /* src_mask */
514 0x07ff2fff, /* dst_mask */
515 TRUE
), /* pcrel_offset */
517 HOWTO (R_ARM_BASE_ABS
, /* type */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
521 FALSE
, /* pc_relative */
523 complain_overflow_dont
,/* complain_on_overflow */
524 bfd_elf_generic_reloc
, /* special_function */
525 "R_ARM_BASE_ABS", /* name */
526 FALSE
, /* partial_inplace */
527 0xffffffff, /* src_mask */
528 0xffffffff, /* dst_mask */
529 FALSE
), /* pcrel_offset */
531 HOWTO (R_ARM_ALU_PCREL7_0
, /* type */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
535 TRUE
, /* pc_relative */
537 complain_overflow_dont
,/* complain_on_overflow */
538 bfd_elf_generic_reloc
, /* special_function */
539 "R_ARM_ALU_PCREL_7_0", /* name */
540 FALSE
, /* partial_inplace */
541 0x00000fff, /* src_mask */
542 0x00000fff, /* dst_mask */
543 TRUE
), /* pcrel_offset */
545 HOWTO (R_ARM_ALU_PCREL15_8
, /* type */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
549 TRUE
, /* pc_relative */
551 complain_overflow_dont
,/* complain_on_overflow */
552 bfd_elf_generic_reloc
, /* special_function */
553 "R_ARM_ALU_PCREL_15_8",/* name */
554 FALSE
, /* partial_inplace */
555 0x00000fff, /* src_mask */
556 0x00000fff, /* dst_mask */
557 TRUE
), /* pcrel_offset */
559 HOWTO (R_ARM_ALU_PCREL23_15
, /* type */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
563 TRUE
, /* pc_relative */
565 complain_overflow_dont
,/* complain_on_overflow */
566 bfd_elf_generic_reloc
, /* special_function */
567 "R_ARM_ALU_PCREL_23_15",/* name */
568 FALSE
, /* partial_inplace */
569 0x00000fff, /* src_mask */
570 0x00000fff, /* dst_mask */
571 TRUE
), /* pcrel_offset */
573 HOWTO (R_ARM_LDR_SBREL_11_0
, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE
, /* pc_relative */
579 complain_overflow_dont
,/* complain_on_overflow */
580 bfd_elf_generic_reloc
, /* special_function */
581 "R_ARM_LDR_SBREL_11_0",/* name */
582 FALSE
, /* partial_inplace */
583 0x00000fff, /* src_mask */
584 0x00000fff, /* dst_mask */
585 FALSE
), /* pcrel_offset */
587 HOWTO (R_ARM_ALU_SBREL_19_12
, /* type */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE
, /* pc_relative */
593 complain_overflow_dont
,/* complain_on_overflow */
594 bfd_elf_generic_reloc
, /* special_function */
595 "R_ARM_ALU_SBREL_19_12",/* name */
596 FALSE
, /* partial_inplace */
597 0x000ff000, /* src_mask */
598 0x000ff000, /* dst_mask */
599 FALSE
), /* pcrel_offset */
601 HOWTO (R_ARM_ALU_SBREL_27_20
, /* type */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
605 FALSE
, /* pc_relative */
607 complain_overflow_dont
,/* complain_on_overflow */
608 bfd_elf_generic_reloc
, /* special_function */
609 "R_ARM_ALU_SBREL_27_20",/* name */
610 FALSE
, /* partial_inplace */
611 0x0ff00000, /* src_mask */
612 0x0ff00000, /* dst_mask */
613 FALSE
), /* pcrel_offset */
615 HOWTO (R_ARM_TARGET1
, /* type */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
619 FALSE
, /* pc_relative */
621 complain_overflow_dont
,/* complain_on_overflow */
622 bfd_elf_generic_reloc
, /* special_function */
623 "R_ARM_TARGET1", /* name */
624 FALSE
, /* partial_inplace */
625 0xffffffff, /* src_mask */
626 0xffffffff, /* dst_mask */
627 FALSE
), /* pcrel_offset */
629 HOWTO (R_ARM_ROSEGREL32
, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE
, /* pc_relative */
635 complain_overflow_dont
,/* complain_on_overflow */
636 bfd_elf_generic_reloc
, /* special_function */
637 "R_ARM_ROSEGREL32", /* name */
638 FALSE
, /* partial_inplace */
639 0xffffffff, /* src_mask */
640 0xffffffff, /* dst_mask */
641 FALSE
), /* pcrel_offset */
643 HOWTO (R_ARM_V4BX
, /* type */
645 2, /* size (0 = byte, 1 = short, 2 = long) */
647 FALSE
, /* pc_relative */
649 complain_overflow_dont
,/* complain_on_overflow */
650 bfd_elf_generic_reloc
, /* special_function */
651 "R_ARM_V4BX", /* name */
652 FALSE
, /* partial_inplace */
653 0xffffffff, /* src_mask */
654 0xffffffff, /* dst_mask */
655 FALSE
), /* pcrel_offset */
657 HOWTO (R_ARM_TARGET2
, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE
, /* pc_relative */
663 complain_overflow_signed
,/* complain_on_overflow */
664 bfd_elf_generic_reloc
, /* special_function */
665 "R_ARM_TARGET2", /* name */
666 FALSE
, /* partial_inplace */
667 0xffffffff, /* src_mask */
668 0xffffffff, /* dst_mask */
669 TRUE
), /* pcrel_offset */
671 HOWTO (R_ARM_PREL31
, /* type */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
675 TRUE
, /* pc_relative */
677 complain_overflow_signed
,/* complain_on_overflow */
678 bfd_elf_generic_reloc
, /* special_function */
679 "R_ARM_PREL31", /* name */
680 FALSE
, /* partial_inplace */
681 0x7fffffff, /* src_mask */
682 0x7fffffff, /* dst_mask */
683 TRUE
), /* pcrel_offset */
685 HOWTO (R_ARM_MOVW_ABS_NC
, /* type */
687 2, /* size (0 = byte, 1 = short, 2 = long) */
689 FALSE
, /* pc_relative */
691 complain_overflow_dont
,/* complain_on_overflow */
692 bfd_elf_generic_reloc
, /* special_function */
693 "R_ARM_MOVW_ABS_NC", /* name */
694 FALSE
, /* partial_inplace */
695 0x000f0fff, /* src_mask */
696 0x000f0fff, /* dst_mask */
697 FALSE
), /* pcrel_offset */
699 HOWTO (R_ARM_MOVT_ABS
, /* type */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_bitfield
,/* complain_on_overflow */
706 bfd_elf_generic_reloc
, /* special_function */
707 "R_ARM_MOVT_ABS", /* name */
708 FALSE
, /* partial_inplace */
709 0x000f0fff, /* src_mask */
710 0x000f0fff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 HOWTO (R_ARM_MOVW_PREL_NC
, /* type */
715 2, /* size (0 = byte, 1 = short, 2 = long) */
717 TRUE
, /* pc_relative */
719 complain_overflow_dont
,/* complain_on_overflow */
720 bfd_elf_generic_reloc
, /* special_function */
721 "R_ARM_MOVW_PREL_NC", /* name */
722 FALSE
, /* partial_inplace */
723 0x000f0fff, /* src_mask */
724 0x000f0fff, /* dst_mask */
725 TRUE
), /* pcrel_offset */
727 HOWTO (R_ARM_MOVT_PREL
, /* type */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
731 TRUE
, /* pc_relative */
733 complain_overflow_bitfield
,/* complain_on_overflow */
734 bfd_elf_generic_reloc
, /* special_function */
735 "R_ARM_MOVT_PREL", /* name */
736 FALSE
, /* partial_inplace */
737 0x000f0fff, /* src_mask */
738 0x000f0fff, /* dst_mask */
739 TRUE
), /* pcrel_offset */
741 HOWTO (R_ARM_THM_MOVW_ABS_NC
, /* type */
743 2, /* size (0 = byte, 1 = short, 2 = long) */
745 FALSE
, /* pc_relative */
747 complain_overflow_dont
,/* complain_on_overflow */
748 bfd_elf_generic_reloc
, /* special_function */
749 "R_ARM_THM_MOVW_ABS_NC",/* name */
750 FALSE
, /* partial_inplace */
751 0x040f70ff, /* src_mask */
752 0x040f70ff, /* dst_mask */
753 FALSE
), /* pcrel_offset */
755 HOWTO (R_ARM_THM_MOVT_ABS
, /* type */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
759 FALSE
, /* pc_relative */
761 complain_overflow_bitfield
,/* complain_on_overflow */
762 bfd_elf_generic_reloc
, /* special_function */
763 "R_ARM_THM_MOVT_ABS", /* name */
764 FALSE
, /* partial_inplace */
765 0x040f70ff, /* src_mask */
766 0x040f70ff, /* dst_mask */
767 FALSE
), /* pcrel_offset */
769 HOWTO (R_ARM_THM_MOVW_PREL_NC
,/* type */
771 2, /* size (0 = byte, 1 = short, 2 = long) */
773 TRUE
, /* pc_relative */
775 complain_overflow_dont
,/* complain_on_overflow */
776 bfd_elf_generic_reloc
, /* special_function */
777 "R_ARM_THM_MOVW_PREL_NC",/* name */
778 FALSE
, /* partial_inplace */
779 0x040f70ff, /* src_mask */
780 0x040f70ff, /* dst_mask */
781 TRUE
), /* pcrel_offset */
783 HOWTO (R_ARM_THM_MOVT_PREL
, /* type */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
787 TRUE
, /* pc_relative */
789 complain_overflow_bitfield
,/* complain_on_overflow */
790 bfd_elf_generic_reloc
, /* special_function */
791 "R_ARM_THM_MOVT_PREL", /* name */
792 FALSE
, /* partial_inplace */
793 0x040f70ff, /* src_mask */
794 0x040f70ff, /* dst_mask */
795 TRUE
), /* pcrel_offset */
797 HOWTO (R_ARM_THM_JUMP19
, /* type */
799 2, /* size (0 = byte, 1 = short, 2 = long) */
801 TRUE
, /* pc_relative */
803 complain_overflow_signed
,/* complain_on_overflow */
804 bfd_elf_generic_reloc
, /* special_function */
805 "R_ARM_THM_JUMP19", /* name */
806 FALSE
, /* partial_inplace */
807 0x043f2fff, /* src_mask */
808 0x043f2fff, /* dst_mask */
809 TRUE
), /* pcrel_offset */
811 HOWTO (R_ARM_THM_JUMP6
, /* type */
813 1, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE
, /* pc_relative */
817 complain_overflow_unsigned
,/* complain_on_overflow */
818 bfd_elf_generic_reloc
, /* special_function */
819 "R_ARM_THM_JUMP6", /* name */
820 FALSE
, /* partial_inplace */
821 0x02f8, /* src_mask */
822 0x02f8, /* dst_mask */
823 TRUE
), /* pcrel_offset */
825 /* These are declared as 13-bit signed relocations because we can
826 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
828 HOWTO (R_ARM_THM_ALU_PREL_11_0
,/* type */
830 2, /* size (0 = byte, 1 = short, 2 = long) */
832 TRUE
, /* pc_relative */
834 complain_overflow_dont
,/* complain_on_overflow */
835 bfd_elf_generic_reloc
, /* special_function */
836 "R_ARM_THM_ALU_PREL_11_0",/* name */
837 FALSE
, /* partial_inplace */
838 0xffffffff, /* src_mask */
839 0xffffffff, /* dst_mask */
840 TRUE
), /* pcrel_offset */
842 HOWTO (R_ARM_THM_PC12
, /* type */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
846 TRUE
, /* pc_relative */
848 complain_overflow_dont
,/* complain_on_overflow */
849 bfd_elf_generic_reloc
, /* special_function */
850 "R_ARM_THM_PC12", /* name */
851 FALSE
, /* partial_inplace */
852 0xffffffff, /* src_mask */
853 0xffffffff, /* dst_mask */
854 TRUE
), /* pcrel_offset */
856 HOWTO (R_ARM_ABS32_NOI
, /* type */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE
, /* pc_relative */
862 complain_overflow_dont
,/* complain_on_overflow */
863 bfd_elf_generic_reloc
, /* special_function */
864 "R_ARM_ABS32_NOI", /* name */
865 FALSE
, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 FALSE
), /* pcrel_offset */
870 HOWTO (R_ARM_REL32_NOI
, /* type */
872 2, /* size (0 = byte, 1 = short, 2 = long) */
874 TRUE
, /* pc_relative */
876 complain_overflow_dont
,/* complain_on_overflow */
877 bfd_elf_generic_reloc
, /* special_function */
878 "R_ARM_REL32_NOI", /* name */
879 FALSE
, /* partial_inplace */
880 0xffffffff, /* src_mask */
881 0xffffffff, /* dst_mask */
882 FALSE
), /* pcrel_offset */
884 /* Group relocations. */
886 HOWTO (R_ARM_ALU_PC_G0_NC
, /* type */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
890 TRUE
, /* pc_relative */
892 complain_overflow_dont
,/* complain_on_overflow */
893 bfd_elf_generic_reloc
, /* special_function */
894 "R_ARM_ALU_PC_G0_NC", /* name */
895 FALSE
, /* partial_inplace */
896 0xffffffff, /* src_mask */
897 0xffffffff, /* dst_mask */
898 TRUE
), /* pcrel_offset */
900 HOWTO (R_ARM_ALU_PC_G0
, /* type */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
904 TRUE
, /* pc_relative */
906 complain_overflow_dont
,/* complain_on_overflow */
907 bfd_elf_generic_reloc
, /* special_function */
908 "R_ARM_ALU_PC_G0", /* name */
909 FALSE
, /* partial_inplace */
910 0xffffffff, /* src_mask */
911 0xffffffff, /* dst_mask */
912 TRUE
), /* pcrel_offset */
914 HOWTO (R_ARM_ALU_PC_G1_NC
, /* type */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
918 TRUE
, /* pc_relative */
920 complain_overflow_dont
,/* complain_on_overflow */
921 bfd_elf_generic_reloc
, /* special_function */
922 "R_ARM_ALU_PC_G1_NC", /* name */
923 FALSE
, /* partial_inplace */
924 0xffffffff, /* src_mask */
925 0xffffffff, /* dst_mask */
926 TRUE
), /* pcrel_offset */
928 HOWTO (R_ARM_ALU_PC_G1
, /* type */
930 2, /* size (0 = byte, 1 = short, 2 = long) */
932 TRUE
, /* pc_relative */
934 complain_overflow_dont
,/* complain_on_overflow */
935 bfd_elf_generic_reloc
, /* special_function */
936 "R_ARM_ALU_PC_G1", /* name */
937 FALSE
, /* partial_inplace */
938 0xffffffff, /* src_mask */
939 0xffffffff, /* dst_mask */
940 TRUE
), /* pcrel_offset */
942 HOWTO (R_ARM_ALU_PC_G2
, /* type */
944 2, /* size (0 = byte, 1 = short, 2 = long) */
946 TRUE
, /* pc_relative */
948 complain_overflow_dont
,/* complain_on_overflow */
949 bfd_elf_generic_reloc
, /* special_function */
950 "R_ARM_ALU_PC_G2", /* name */
951 FALSE
, /* partial_inplace */
952 0xffffffff, /* src_mask */
953 0xffffffff, /* dst_mask */
954 TRUE
), /* pcrel_offset */
956 HOWTO (R_ARM_LDR_PC_G1
, /* type */
958 2, /* size (0 = byte, 1 = short, 2 = long) */
960 TRUE
, /* pc_relative */
962 complain_overflow_dont
,/* complain_on_overflow */
963 bfd_elf_generic_reloc
, /* special_function */
964 "R_ARM_LDR_PC_G1", /* name */
965 FALSE
, /* partial_inplace */
966 0xffffffff, /* src_mask */
967 0xffffffff, /* dst_mask */
968 TRUE
), /* pcrel_offset */
970 HOWTO (R_ARM_LDR_PC_G2
, /* type */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
974 TRUE
, /* pc_relative */
976 complain_overflow_dont
,/* complain_on_overflow */
977 bfd_elf_generic_reloc
, /* special_function */
978 "R_ARM_LDR_PC_G2", /* name */
979 FALSE
, /* partial_inplace */
980 0xffffffff, /* src_mask */
981 0xffffffff, /* dst_mask */
982 TRUE
), /* pcrel_offset */
984 HOWTO (R_ARM_LDRS_PC_G0
, /* type */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
988 TRUE
, /* pc_relative */
990 complain_overflow_dont
,/* complain_on_overflow */
991 bfd_elf_generic_reloc
, /* special_function */
992 "R_ARM_LDRS_PC_G0", /* name */
993 FALSE
, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 TRUE
), /* pcrel_offset */
998 HOWTO (R_ARM_LDRS_PC_G1
, /* type */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1002 TRUE
, /* pc_relative */
1004 complain_overflow_dont
,/* complain_on_overflow */
1005 bfd_elf_generic_reloc
, /* special_function */
1006 "R_ARM_LDRS_PC_G1", /* name */
1007 FALSE
, /* partial_inplace */
1008 0xffffffff, /* src_mask */
1009 0xffffffff, /* dst_mask */
1010 TRUE
), /* pcrel_offset */
1012 HOWTO (R_ARM_LDRS_PC_G2
, /* type */
1014 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 TRUE
, /* pc_relative */
1018 complain_overflow_dont
,/* complain_on_overflow */
1019 bfd_elf_generic_reloc
, /* special_function */
1020 "R_ARM_LDRS_PC_G2", /* name */
1021 FALSE
, /* partial_inplace */
1022 0xffffffff, /* src_mask */
1023 0xffffffff, /* dst_mask */
1024 TRUE
), /* pcrel_offset */
1026 HOWTO (R_ARM_LDC_PC_G0
, /* type */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1030 TRUE
, /* pc_relative */
1032 complain_overflow_dont
,/* complain_on_overflow */
1033 bfd_elf_generic_reloc
, /* special_function */
1034 "R_ARM_LDC_PC_G0", /* name */
1035 FALSE
, /* partial_inplace */
1036 0xffffffff, /* src_mask */
1037 0xffffffff, /* dst_mask */
1038 TRUE
), /* pcrel_offset */
1040 HOWTO (R_ARM_LDC_PC_G1
, /* type */
1042 2, /* size (0 = byte, 1 = short, 2 = long) */
1044 TRUE
, /* pc_relative */
1046 complain_overflow_dont
,/* complain_on_overflow */
1047 bfd_elf_generic_reloc
, /* special_function */
1048 "R_ARM_LDC_PC_G1", /* name */
1049 FALSE
, /* partial_inplace */
1050 0xffffffff, /* src_mask */
1051 0xffffffff, /* dst_mask */
1052 TRUE
), /* pcrel_offset */
1054 HOWTO (R_ARM_LDC_PC_G2
, /* type */
1056 2, /* size (0 = byte, 1 = short, 2 = long) */
1058 TRUE
, /* pc_relative */
1060 complain_overflow_dont
,/* complain_on_overflow */
1061 bfd_elf_generic_reloc
, /* special_function */
1062 "R_ARM_LDC_PC_G2", /* name */
1063 FALSE
, /* partial_inplace */
1064 0xffffffff, /* src_mask */
1065 0xffffffff, /* dst_mask */
1066 TRUE
), /* pcrel_offset */
1068 HOWTO (R_ARM_ALU_SB_G0_NC
, /* type */
1070 2, /* size (0 = byte, 1 = short, 2 = long) */
1072 TRUE
, /* pc_relative */
1074 complain_overflow_dont
,/* complain_on_overflow */
1075 bfd_elf_generic_reloc
, /* special_function */
1076 "R_ARM_ALU_SB_G0_NC", /* name */
1077 FALSE
, /* partial_inplace */
1078 0xffffffff, /* src_mask */
1079 0xffffffff, /* dst_mask */
1080 TRUE
), /* pcrel_offset */
1082 HOWTO (R_ARM_ALU_SB_G0
, /* type */
1084 2, /* size (0 = byte, 1 = short, 2 = long) */
1086 TRUE
, /* pc_relative */
1088 complain_overflow_dont
,/* complain_on_overflow */
1089 bfd_elf_generic_reloc
, /* special_function */
1090 "R_ARM_ALU_SB_G0", /* name */
1091 FALSE
, /* partial_inplace */
1092 0xffffffff, /* src_mask */
1093 0xffffffff, /* dst_mask */
1094 TRUE
), /* pcrel_offset */
1096 HOWTO (R_ARM_ALU_SB_G1_NC
, /* type */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1100 TRUE
, /* pc_relative */
1102 complain_overflow_dont
,/* complain_on_overflow */
1103 bfd_elf_generic_reloc
, /* special_function */
1104 "R_ARM_ALU_SB_G1_NC", /* name */
1105 FALSE
, /* partial_inplace */
1106 0xffffffff, /* src_mask */
1107 0xffffffff, /* dst_mask */
1108 TRUE
), /* pcrel_offset */
1110 HOWTO (R_ARM_ALU_SB_G1
, /* type */
1112 2, /* size (0 = byte, 1 = short, 2 = long) */
1114 TRUE
, /* pc_relative */
1116 complain_overflow_dont
,/* complain_on_overflow */
1117 bfd_elf_generic_reloc
, /* special_function */
1118 "R_ARM_ALU_SB_G1", /* name */
1119 FALSE
, /* partial_inplace */
1120 0xffffffff, /* src_mask */
1121 0xffffffff, /* dst_mask */
1122 TRUE
), /* pcrel_offset */
1124 HOWTO (R_ARM_ALU_SB_G2
, /* type */
1126 2, /* size (0 = byte, 1 = short, 2 = long) */
1128 TRUE
, /* pc_relative */
1130 complain_overflow_dont
,/* complain_on_overflow */
1131 bfd_elf_generic_reloc
, /* special_function */
1132 "R_ARM_ALU_SB_G2", /* name */
1133 FALSE
, /* partial_inplace */
1134 0xffffffff, /* src_mask */
1135 0xffffffff, /* dst_mask */
1136 TRUE
), /* pcrel_offset */
1138 HOWTO (R_ARM_LDR_SB_G0
, /* type */
1140 2, /* size (0 = byte, 1 = short, 2 = long) */
1142 TRUE
, /* pc_relative */
1144 complain_overflow_dont
,/* complain_on_overflow */
1145 bfd_elf_generic_reloc
, /* special_function */
1146 "R_ARM_LDR_SB_G0", /* name */
1147 FALSE
, /* partial_inplace */
1148 0xffffffff, /* src_mask */
1149 0xffffffff, /* dst_mask */
1150 TRUE
), /* pcrel_offset */
1152 HOWTO (R_ARM_LDR_SB_G1
, /* type */
1154 2, /* size (0 = byte, 1 = short, 2 = long) */
1156 TRUE
, /* pc_relative */
1158 complain_overflow_dont
,/* complain_on_overflow */
1159 bfd_elf_generic_reloc
, /* special_function */
1160 "R_ARM_LDR_SB_G1", /* name */
1161 FALSE
, /* partial_inplace */
1162 0xffffffff, /* src_mask */
1163 0xffffffff, /* dst_mask */
1164 TRUE
), /* pcrel_offset */
1166 HOWTO (R_ARM_LDR_SB_G2
, /* type */
1168 2, /* size (0 = byte, 1 = short, 2 = long) */
1170 TRUE
, /* pc_relative */
1172 complain_overflow_dont
,/* complain_on_overflow */
1173 bfd_elf_generic_reloc
, /* special_function */
1174 "R_ARM_LDR_SB_G2", /* name */
1175 FALSE
, /* partial_inplace */
1176 0xffffffff, /* src_mask */
1177 0xffffffff, /* dst_mask */
1178 TRUE
), /* pcrel_offset */
1180 HOWTO (R_ARM_LDRS_SB_G0
, /* type */
1182 2, /* size (0 = byte, 1 = short, 2 = long) */
1184 TRUE
, /* pc_relative */
1186 complain_overflow_dont
,/* complain_on_overflow */
1187 bfd_elf_generic_reloc
, /* special_function */
1188 "R_ARM_LDRS_SB_G0", /* name */
1189 FALSE
, /* partial_inplace */
1190 0xffffffff, /* src_mask */
1191 0xffffffff, /* dst_mask */
1192 TRUE
), /* pcrel_offset */
1194 HOWTO (R_ARM_LDRS_SB_G1
, /* type */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1198 TRUE
, /* pc_relative */
1200 complain_overflow_dont
,/* complain_on_overflow */
1201 bfd_elf_generic_reloc
, /* special_function */
1202 "R_ARM_LDRS_SB_G1", /* name */
1203 FALSE
, /* partial_inplace */
1204 0xffffffff, /* src_mask */
1205 0xffffffff, /* dst_mask */
1206 TRUE
), /* pcrel_offset */
1208 HOWTO (R_ARM_LDRS_SB_G2
, /* type */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1212 TRUE
, /* pc_relative */
1214 complain_overflow_dont
,/* complain_on_overflow */
1215 bfd_elf_generic_reloc
, /* special_function */
1216 "R_ARM_LDRS_SB_G2", /* name */
1217 FALSE
, /* partial_inplace */
1218 0xffffffff, /* src_mask */
1219 0xffffffff, /* dst_mask */
1220 TRUE
), /* pcrel_offset */
1222 HOWTO (R_ARM_LDC_SB_G0
, /* type */
1224 2, /* size (0 = byte, 1 = short, 2 = long) */
1226 TRUE
, /* pc_relative */
1228 complain_overflow_dont
,/* complain_on_overflow */
1229 bfd_elf_generic_reloc
, /* special_function */
1230 "R_ARM_LDC_SB_G0", /* name */
1231 FALSE
, /* partial_inplace */
1232 0xffffffff, /* src_mask */
1233 0xffffffff, /* dst_mask */
1234 TRUE
), /* pcrel_offset */
1236 HOWTO (R_ARM_LDC_SB_G1
, /* type */
1238 2, /* size (0 = byte, 1 = short, 2 = long) */
1240 TRUE
, /* pc_relative */
1242 complain_overflow_dont
,/* complain_on_overflow */
1243 bfd_elf_generic_reloc
, /* special_function */
1244 "R_ARM_LDC_SB_G1", /* name */
1245 FALSE
, /* partial_inplace */
1246 0xffffffff, /* src_mask */
1247 0xffffffff, /* dst_mask */
1248 TRUE
), /* pcrel_offset */
1250 HOWTO (R_ARM_LDC_SB_G2
, /* type */
1252 2, /* size (0 = byte, 1 = short, 2 = long) */
1254 TRUE
, /* pc_relative */
1256 complain_overflow_dont
,/* complain_on_overflow */
1257 bfd_elf_generic_reloc
, /* special_function */
1258 "R_ARM_LDC_SB_G2", /* name */
1259 FALSE
, /* partial_inplace */
1260 0xffffffff, /* src_mask */
1261 0xffffffff, /* dst_mask */
1262 TRUE
), /* pcrel_offset */
1264 /* End of group relocations. */
1266 HOWTO (R_ARM_MOVW_BREL_NC
, /* type */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE
, /* pc_relative */
1272 complain_overflow_dont
,/* complain_on_overflow */
1273 bfd_elf_generic_reloc
, /* special_function */
1274 "R_ARM_MOVW_BREL_NC", /* name */
1275 FALSE
, /* partial_inplace */
1276 0x0000ffff, /* src_mask */
1277 0x0000ffff, /* dst_mask */
1278 FALSE
), /* pcrel_offset */
1280 HOWTO (R_ARM_MOVT_BREL
, /* type */
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE
, /* pc_relative */
1286 complain_overflow_bitfield
,/* complain_on_overflow */
1287 bfd_elf_generic_reloc
, /* special_function */
1288 "R_ARM_MOVT_BREL", /* name */
1289 FALSE
, /* partial_inplace */
1290 0x0000ffff, /* src_mask */
1291 0x0000ffff, /* dst_mask */
1292 FALSE
), /* pcrel_offset */
1294 HOWTO (R_ARM_MOVW_BREL
, /* type */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE
, /* pc_relative */
1300 complain_overflow_dont
,/* complain_on_overflow */
1301 bfd_elf_generic_reloc
, /* special_function */
1302 "R_ARM_MOVW_BREL", /* name */
1303 FALSE
, /* partial_inplace */
1304 0x0000ffff, /* src_mask */
1305 0x0000ffff, /* dst_mask */
1306 FALSE
), /* pcrel_offset */
1308 HOWTO (R_ARM_THM_MOVW_BREL_NC
,/* type */
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE
, /* pc_relative */
1314 complain_overflow_dont
,/* complain_on_overflow */
1315 bfd_elf_generic_reloc
, /* special_function */
1316 "R_ARM_THM_MOVW_BREL_NC",/* name */
1317 FALSE
, /* partial_inplace */
1318 0x040f70ff, /* src_mask */
1319 0x040f70ff, /* dst_mask */
1320 FALSE
), /* pcrel_offset */
1322 HOWTO (R_ARM_THM_MOVT_BREL
, /* type */
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE
, /* pc_relative */
1328 complain_overflow_bitfield
,/* complain_on_overflow */
1329 bfd_elf_generic_reloc
, /* special_function */
1330 "R_ARM_THM_MOVT_BREL", /* name */
1331 FALSE
, /* partial_inplace */
1332 0x040f70ff, /* src_mask */
1333 0x040f70ff, /* dst_mask */
1334 FALSE
), /* pcrel_offset */
1336 HOWTO (R_ARM_THM_MOVW_BREL
, /* type */
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE
, /* pc_relative */
1342 complain_overflow_dont
,/* complain_on_overflow */
1343 bfd_elf_generic_reloc
, /* special_function */
1344 "R_ARM_THM_MOVW_BREL", /* name */
1345 FALSE
, /* partial_inplace */
1346 0x040f70ff, /* src_mask */
1347 0x040f70ff, /* dst_mask */
1348 FALSE
), /* pcrel_offset */
1350 EMPTY_HOWTO (90), /* Unallocated. */
1355 HOWTO (R_ARM_PLT32_ABS
, /* type */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1359 FALSE
, /* pc_relative */
1361 complain_overflow_dont
,/* complain_on_overflow */
1362 bfd_elf_generic_reloc
, /* special_function */
1363 "R_ARM_PLT32_ABS", /* name */
1364 FALSE
, /* partial_inplace */
1365 0xffffffff, /* src_mask */
1366 0xffffffff, /* dst_mask */
1367 FALSE
), /* pcrel_offset */
1369 HOWTO (R_ARM_GOT_ABS
, /* type */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_dont
,/* complain_on_overflow */
1376 bfd_elf_generic_reloc
, /* special_function */
1377 "R_ARM_GOT_ABS", /* name */
1378 FALSE
, /* partial_inplace */
1379 0xffffffff, /* src_mask */
1380 0xffffffff, /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 HOWTO (R_ARM_GOT_PREL
, /* type */
1385 2, /* size (0 = byte, 1 = short, 2 = long) */
1387 TRUE
, /* pc_relative */
1389 complain_overflow_dont
, /* complain_on_overflow */
1390 bfd_elf_generic_reloc
, /* special_function */
1391 "R_ARM_GOT_PREL", /* name */
1392 FALSE
, /* partial_inplace */
1393 0xffffffff, /* src_mask */
1394 0xffffffff, /* dst_mask */
1395 TRUE
), /* pcrel_offset */
1397 HOWTO (R_ARM_GOT_BREL12
, /* type */
1399 2, /* size (0 = byte, 1 = short, 2 = long) */
1401 FALSE
, /* pc_relative */
1403 complain_overflow_bitfield
,/* complain_on_overflow */
1404 bfd_elf_generic_reloc
, /* special_function */
1405 "R_ARM_GOT_BREL12", /* name */
1406 FALSE
, /* partial_inplace */
1407 0x00000fff, /* src_mask */
1408 0x00000fff, /* dst_mask */
1409 FALSE
), /* pcrel_offset */
1411 HOWTO (R_ARM_GOTOFF12
, /* type */
1413 2, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE
, /* pc_relative */
1417 complain_overflow_bitfield
,/* complain_on_overflow */
1418 bfd_elf_generic_reloc
, /* special_function */
1419 "R_ARM_GOTOFF12", /* name */
1420 FALSE
, /* partial_inplace */
1421 0x00000fff, /* src_mask */
1422 0x00000fff, /* dst_mask */
1423 FALSE
), /* pcrel_offset */
1425 EMPTY_HOWTO (R_ARM_GOTRELAX
), /* reserved for future GOT-load optimizations */
1427 /* GNU extension to record C++ vtable member usage */
1428 HOWTO (R_ARM_GNU_VTENTRY
, /* type */
1430 2, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE
, /* pc_relative */
1434 complain_overflow_dont
, /* complain_on_overflow */
1435 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
1436 "R_ARM_GNU_VTENTRY", /* name */
1437 FALSE
, /* partial_inplace */
1440 FALSE
), /* pcrel_offset */
1442 /* GNU extension to record C++ vtable hierarchy */
1443 HOWTO (R_ARM_GNU_VTINHERIT
, /* type */
1445 2, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE
, /* pc_relative */
1449 complain_overflow_dont
, /* complain_on_overflow */
1450 NULL
, /* special_function */
1451 "R_ARM_GNU_VTINHERIT", /* name */
1452 FALSE
, /* partial_inplace */
1455 FALSE
), /* pcrel_offset */
1457 HOWTO (R_ARM_THM_JUMP11
, /* type */
1459 1, /* size (0 = byte, 1 = short, 2 = long) */
1461 TRUE
, /* pc_relative */
1463 complain_overflow_signed
, /* complain_on_overflow */
1464 bfd_elf_generic_reloc
, /* special_function */
1465 "R_ARM_THM_JUMP11", /* name */
1466 FALSE
, /* partial_inplace */
1467 0x000007ff, /* src_mask */
1468 0x000007ff, /* dst_mask */
1469 TRUE
), /* pcrel_offset */
1471 HOWTO (R_ARM_THM_JUMP8
, /* type */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1475 TRUE
, /* pc_relative */
1477 complain_overflow_signed
, /* complain_on_overflow */
1478 bfd_elf_generic_reloc
, /* special_function */
1479 "R_ARM_THM_JUMP8", /* name */
1480 FALSE
, /* partial_inplace */
1481 0x000000ff, /* src_mask */
1482 0x000000ff, /* dst_mask */
1483 TRUE
), /* pcrel_offset */
1485 /* TLS relocations */
1486 HOWTO (R_ARM_TLS_GD32
, /* type */
1488 2, /* size (0 = byte, 1 = short, 2 = long) */
1490 FALSE
, /* pc_relative */
1492 complain_overflow_bitfield
,/* complain_on_overflow */
1493 NULL
, /* special_function */
1494 "R_ARM_TLS_GD32", /* name */
1495 TRUE
, /* partial_inplace */
1496 0xffffffff, /* src_mask */
1497 0xffffffff, /* dst_mask */
1498 FALSE
), /* pcrel_offset */
1500 HOWTO (R_ARM_TLS_LDM32
, /* type */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE
, /* pc_relative */
1506 complain_overflow_bitfield
,/* complain_on_overflow */
1507 bfd_elf_generic_reloc
, /* special_function */
1508 "R_ARM_TLS_LDM32", /* name */
1509 TRUE
, /* partial_inplace */
1510 0xffffffff, /* src_mask */
1511 0xffffffff, /* dst_mask */
1512 FALSE
), /* pcrel_offset */
1514 HOWTO (R_ARM_TLS_LDO32
, /* type */
1516 2, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE
, /* pc_relative */
1520 complain_overflow_bitfield
,/* complain_on_overflow */
1521 bfd_elf_generic_reloc
, /* special_function */
1522 "R_ARM_TLS_LDO32", /* name */
1523 TRUE
, /* partial_inplace */
1524 0xffffffff, /* src_mask */
1525 0xffffffff, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 HOWTO (R_ARM_TLS_IE32
, /* type */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1532 FALSE
, /* pc_relative */
1534 complain_overflow_bitfield
,/* complain_on_overflow */
1535 NULL
, /* special_function */
1536 "R_ARM_TLS_IE32", /* name */
1537 TRUE
, /* partial_inplace */
1538 0xffffffff, /* src_mask */
1539 0xffffffff, /* dst_mask */
1540 FALSE
), /* pcrel_offset */
1542 HOWTO (R_ARM_TLS_LE32
, /* type */
1544 2, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE
, /* pc_relative */
1548 complain_overflow_bitfield
,/* complain_on_overflow */
1549 bfd_elf_generic_reloc
, /* special_function */
1550 "R_ARM_TLS_LE32", /* name */
1551 TRUE
, /* partial_inplace */
1552 0xffffffff, /* src_mask */
1553 0xffffffff, /* dst_mask */
1554 FALSE
), /* pcrel_offset */
1556 HOWTO (R_ARM_TLS_LDO12
, /* type */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1560 FALSE
, /* pc_relative */
1562 complain_overflow_bitfield
,/* complain_on_overflow */
1563 bfd_elf_generic_reloc
, /* special_function */
1564 "R_ARM_TLS_LDO12", /* name */
1565 FALSE
, /* partial_inplace */
1566 0x00000fff, /* src_mask */
1567 0x00000fff, /* dst_mask */
1568 FALSE
), /* pcrel_offset */
1570 HOWTO (R_ARM_TLS_LE12
, /* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE
, /* pc_relative */
1576 complain_overflow_bitfield
,/* complain_on_overflow */
1577 bfd_elf_generic_reloc
, /* special_function */
1578 "R_ARM_TLS_LE12", /* name */
1579 FALSE
, /* partial_inplace */
1580 0x00000fff, /* src_mask */
1581 0x00000fff, /* dst_mask */
1582 FALSE
), /* pcrel_offset */
1584 HOWTO (R_ARM_TLS_IE12GP
, /* type */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE
, /* pc_relative */
1590 complain_overflow_bitfield
,/* complain_on_overflow */
1591 bfd_elf_generic_reloc
, /* special_function */
1592 "R_ARM_TLS_IE12GP", /* name */
1593 FALSE
, /* partial_inplace */
1594 0x00000fff, /* src_mask */
1595 0x00000fff, /* dst_mask */
1596 FALSE
), /* pcrel_offset */
1599 /* 112-127 private relocations
1600 128 R_ARM_ME_TOO, obsolete
1601 129-255 unallocated in AAELF.
1603 249-255 extended, currently unused, relocations: */
1605 static reloc_howto_type elf32_arm_howto_table_2
[4] =
1607 HOWTO (R_ARM_RREL32
, /* type */
1609 0, /* size (0 = byte, 1 = short, 2 = long) */
1611 FALSE
, /* pc_relative */
1613 complain_overflow_dont
,/* complain_on_overflow */
1614 bfd_elf_generic_reloc
, /* special_function */
1615 "R_ARM_RREL32", /* name */
1616 FALSE
, /* partial_inplace */
1619 FALSE
), /* pcrel_offset */
1621 HOWTO (R_ARM_RABS32
, /* type */
1623 0, /* size (0 = byte, 1 = short, 2 = long) */
1625 FALSE
, /* pc_relative */
1627 complain_overflow_dont
,/* complain_on_overflow */
1628 bfd_elf_generic_reloc
, /* special_function */
1629 "R_ARM_RABS32", /* name */
1630 FALSE
, /* partial_inplace */
1633 FALSE
), /* pcrel_offset */
1635 HOWTO (R_ARM_RPC24
, /* type */
1637 0, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE
, /* pc_relative */
1641 complain_overflow_dont
,/* complain_on_overflow */
1642 bfd_elf_generic_reloc
, /* special_function */
1643 "R_ARM_RPC24", /* name */
1644 FALSE
, /* partial_inplace */
1647 FALSE
), /* pcrel_offset */
1649 HOWTO (R_ARM_RBASE
, /* type */
1651 0, /* size (0 = byte, 1 = short, 2 = long) */
1653 FALSE
, /* pc_relative */
1655 complain_overflow_dont
,/* complain_on_overflow */
1656 bfd_elf_generic_reloc
, /* special_function */
1657 "R_ARM_RBASE", /* name */
1658 FALSE
, /* partial_inplace */
1661 FALSE
) /* pcrel_offset */
1664 static reloc_howto_type
*
1665 elf32_arm_howto_from_type (unsigned int r_type
)
1667 if (r_type
< ARRAY_SIZE (elf32_arm_howto_table_1
))
1668 return &elf32_arm_howto_table_1
[r_type
];
1670 if (r_type
>= R_ARM_RREL32
1671 && r_type
< R_ARM_RREL32
+ ARRAY_SIZE (elf32_arm_howto_table_2
))
1672 return &elf32_arm_howto_table_2
[r_type
- R_ARM_RREL32
];
1678 elf32_arm_info_to_howto (bfd
* abfd ATTRIBUTE_UNUSED
, arelent
* bfd_reloc
,
1679 Elf_Internal_Rela
* elf_reloc
)
1681 unsigned int r_type
;
1683 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1684 bfd_reloc
->howto
= elf32_arm_howto_from_type (r_type
);
1687 struct elf32_arm_reloc_map
1689 bfd_reloc_code_real_type bfd_reloc_val
;
1690 unsigned char elf_reloc_val
;
1693 /* All entries in this list must also be present in elf32_arm_howto_table. */
1694 static const struct elf32_arm_reloc_map elf32_arm_reloc_map
[] =
1696 {BFD_RELOC_NONE
, R_ARM_NONE
},
1697 {BFD_RELOC_ARM_PCREL_BRANCH
, R_ARM_PC24
},
1698 {BFD_RELOC_ARM_PCREL_CALL
, R_ARM_CALL
},
1699 {BFD_RELOC_ARM_PCREL_JUMP
, R_ARM_JUMP24
},
1700 {BFD_RELOC_ARM_PCREL_BLX
, R_ARM_XPC25
},
1701 {BFD_RELOC_THUMB_PCREL_BLX
, R_ARM_THM_XPC22
},
1702 {BFD_RELOC_32
, R_ARM_ABS32
},
1703 {BFD_RELOC_32_PCREL
, R_ARM_REL32
},
1704 {BFD_RELOC_8
, R_ARM_ABS8
},
1705 {BFD_RELOC_16
, R_ARM_ABS16
},
1706 {BFD_RELOC_ARM_OFFSET_IMM
, R_ARM_ABS12
},
1707 {BFD_RELOC_ARM_THUMB_OFFSET
, R_ARM_THM_ABS5
},
1708 {BFD_RELOC_THUMB_PCREL_BRANCH25
, R_ARM_THM_JUMP24
},
1709 {BFD_RELOC_THUMB_PCREL_BRANCH23
, R_ARM_THM_CALL
},
1710 {BFD_RELOC_THUMB_PCREL_BRANCH12
, R_ARM_THM_JUMP11
},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH20
, R_ARM_THM_JUMP19
},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH9
, R_ARM_THM_JUMP8
},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH7
, R_ARM_THM_JUMP6
},
1714 {BFD_RELOC_ARM_GLOB_DAT
, R_ARM_GLOB_DAT
},
1715 {BFD_RELOC_ARM_JUMP_SLOT
, R_ARM_JUMP_SLOT
},
1716 {BFD_RELOC_ARM_RELATIVE
, R_ARM_RELATIVE
},
1717 {BFD_RELOC_ARM_GOTOFF
, R_ARM_GOTOFF32
},
1718 {BFD_RELOC_ARM_GOTPC
, R_ARM_GOTPC
},
1719 {BFD_RELOC_ARM_GOT32
, R_ARM_GOT32
},
1720 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1721 {BFD_RELOC_ARM_TARGET1
, R_ARM_TARGET1
},
1722 {BFD_RELOC_ARM_ROSEGREL32
, R_ARM_ROSEGREL32
},
1723 {BFD_RELOC_ARM_SBREL32
, R_ARM_SBREL32
},
1724 {BFD_RELOC_ARM_PREL31
, R_ARM_PREL31
},
1725 {BFD_RELOC_ARM_TARGET2
, R_ARM_TARGET2
},
1726 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1727 {BFD_RELOC_ARM_TLS_GD32
, R_ARM_TLS_GD32
},
1728 {BFD_RELOC_ARM_TLS_LDO32
, R_ARM_TLS_LDO32
},
1729 {BFD_RELOC_ARM_TLS_LDM32
, R_ARM_TLS_LDM32
},
1730 {BFD_RELOC_ARM_TLS_DTPMOD32
, R_ARM_TLS_DTPMOD32
},
1731 {BFD_RELOC_ARM_TLS_DTPOFF32
, R_ARM_TLS_DTPOFF32
},
1732 {BFD_RELOC_ARM_TLS_TPOFF32
, R_ARM_TLS_TPOFF32
},
1733 {BFD_RELOC_ARM_TLS_IE32
, R_ARM_TLS_IE32
},
1734 {BFD_RELOC_ARM_TLS_LE32
, R_ARM_TLS_LE32
},
1735 {BFD_RELOC_VTABLE_INHERIT
, R_ARM_GNU_VTINHERIT
},
1736 {BFD_RELOC_VTABLE_ENTRY
, R_ARM_GNU_VTENTRY
},
1737 {BFD_RELOC_ARM_MOVW
, R_ARM_MOVW_ABS_NC
},
1738 {BFD_RELOC_ARM_MOVT
, R_ARM_MOVT_ABS
},
1739 {BFD_RELOC_ARM_MOVW_PCREL
, R_ARM_MOVW_PREL_NC
},
1740 {BFD_RELOC_ARM_MOVT_PCREL
, R_ARM_MOVT_PREL
},
1741 {BFD_RELOC_ARM_THUMB_MOVW
, R_ARM_THM_MOVW_ABS_NC
},
1742 {BFD_RELOC_ARM_THUMB_MOVT
, R_ARM_THM_MOVT_ABS
},
1743 {BFD_RELOC_ARM_THUMB_MOVW_PCREL
, R_ARM_THM_MOVW_PREL_NC
},
1744 {BFD_RELOC_ARM_THUMB_MOVT_PCREL
, R_ARM_THM_MOVT_PREL
},
1745 {BFD_RELOC_ARM_ALU_PC_G0_NC
, R_ARM_ALU_PC_G0_NC
},
1746 {BFD_RELOC_ARM_ALU_PC_G0
, R_ARM_ALU_PC_G0
},
1747 {BFD_RELOC_ARM_ALU_PC_G1_NC
, R_ARM_ALU_PC_G1_NC
},
1748 {BFD_RELOC_ARM_ALU_PC_G1
, R_ARM_ALU_PC_G1
},
1749 {BFD_RELOC_ARM_ALU_PC_G2
, R_ARM_ALU_PC_G2
},
1750 {BFD_RELOC_ARM_LDR_PC_G0
, R_ARM_LDR_PC_G0
},
1751 {BFD_RELOC_ARM_LDR_PC_G1
, R_ARM_LDR_PC_G1
},
1752 {BFD_RELOC_ARM_LDR_PC_G2
, R_ARM_LDR_PC_G2
},
1753 {BFD_RELOC_ARM_LDRS_PC_G0
, R_ARM_LDRS_PC_G0
},
1754 {BFD_RELOC_ARM_LDRS_PC_G1
, R_ARM_LDRS_PC_G1
},
1755 {BFD_RELOC_ARM_LDRS_PC_G2
, R_ARM_LDRS_PC_G2
},
1756 {BFD_RELOC_ARM_LDC_PC_G0
, R_ARM_LDC_PC_G0
},
1757 {BFD_RELOC_ARM_LDC_PC_G1
, R_ARM_LDC_PC_G1
},
1758 {BFD_RELOC_ARM_LDC_PC_G2
, R_ARM_LDC_PC_G2
},
1759 {BFD_RELOC_ARM_ALU_SB_G0_NC
, R_ARM_ALU_SB_G0_NC
},
1760 {BFD_RELOC_ARM_ALU_SB_G0
, R_ARM_ALU_SB_G0
},
1761 {BFD_RELOC_ARM_ALU_SB_G1_NC
, R_ARM_ALU_SB_G1_NC
},
1762 {BFD_RELOC_ARM_ALU_SB_G1
, R_ARM_ALU_SB_G1
},
1763 {BFD_RELOC_ARM_ALU_SB_G2
, R_ARM_ALU_SB_G2
},
1764 {BFD_RELOC_ARM_LDR_SB_G0
, R_ARM_LDR_SB_G0
},
1765 {BFD_RELOC_ARM_LDR_SB_G1
, R_ARM_LDR_SB_G1
},
1766 {BFD_RELOC_ARM_LDR_SB_G2
, R_ARM_LDR_SB_G2
},
1767 {BFD_RELOC_ARM_LDRS_SB_G0
, R_ARM_LDRS_SB_G0
},
1768 {BFD_RELOC_ARM_LDRS_SB_G1
, R_ARM_LDRS_SB_G1
},
1769 {BFD_RELOC_ARM_LDRS_SB_G2
, R_ARM_LDRS_SB_G2
},
1770 {BFD_RELOC_ARM_LDC_SB_G0
, R_ARM_LDC_SB_G0
},
1771 {BFD_RELOC_ARM_LDC_SB_G1
, R_ARM_LDC_SB_G1
},
1772 {BFD_RELOC_ARM_LDC_SB_G2
, R_ARM_LDC_SB_G2
},
1773 {BFD_RELOC_ARM_V4BX
, R_ARM_V4BX
}
1776 static reloc_howto_type
*
1777 elf32_arm_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1778 bfd_reloc_code_real_type code
)
1782 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_reloc_map
); i
++)
1783 if (elf32_arm_reloc_map
[i
].bfd_reloc_val
== code
)
1784 return elf32_arm_howto_from_type (elf32_arm_reloc_map
[i
].elf_reloc_val
);
1789 static reloc_howto_type
*
1790 elf32_arm_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1795 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_howto_table_1
); i
++)
1796 if (elf32_arm_howto_table_1
[i
].name
!= NULL
1797 && strcasecmp (elf32_arm_howto_table_1
[i
].name
, r_name
) == 0)
1798 return &elf32_arm_howto_table_1
[i
];
1800 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_howto_table_2
); i
++)
1801 if (elf32_arm_howto_table_2
[i
].name
!= NULL
1802 && strcasecmp (elf32_arm_howto_table_2
[i
].name
, r_name
) == 0)
1803 return &elf32_arm_howto_table_2
[i
];
1808 /* Support for core dump NOTE sections. */
1811 elf32_arm_nabi_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1816 switch (note
->descsz
)
1821 case 148: /* Linux/ARM 32-bit. */
1823 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1826 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1835 /* Make a ".reg/999" section. */
1836 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1837 size
, note
->descpos
+ offset
);
1841 elf32_arm_nabi_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1843 switch (note
->descsz
)
1848 case 124: /* Linux/ARM elf_prpsinfo. */
1849 elf_tdata (abfd
)->core_program
1850 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
1851 elf_tdata (abfd
)->core_command
1852 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
1855 /* Note that for some reason, a spurious space is tacked
1856 onto the end of the args in some (at least one anyway)
1857 implementations, so strip it off if it exists. */
1859 char *command
= elf_tdata (abfd
)->core_command
;
1860 int n
= strlen (command
);
1862 if (0 < n
&& command
[n
- 1] == ' ')
1863 command
[n
- 1] = '\0';
1869 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1870 #define TARGET_LITTLE_NAME "elf32-littlearm"
1871 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1872 #define TARGET_BIG_NAME "elf32-bigarm"
1874 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1875 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1877 typedef unsigned long int insn32
;
1878 typedef unsigned short int insn16
;
1880 /* In lieu of proper flags, assume all EABIv4 or later objects are
1882 #define INTERWORK_FLAG(abfd) \
1883 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1884 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1886 /* The linker script knows the section names for placement.
1887 The entry_names are used to do simple name mangling on the stubs.
1888 Given a function name, and its type, the stub can be found. The
1889 name can be changed. The only requirement is the %s be present. */
1890 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1891 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1893 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1894 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1896 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1897 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1899 #define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1900 #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1902 #define STUB_ENTRY_NAME "__%s_veneer"
1904 /* The name of the dynamic interpreter. This is put in the .interp
1906 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1908 #ifdef FOUR_WORD_PLT
1910 /* The first entry in a procedure linkage table looks like
1911 this. It is set up so that any shared library function that is
1912 called before the relocation has been set up calls the dynamic
1914 static const bfd_vma elf32_arm_plt0_entry
[] =
1916 0xe52de004, /* str lr, [sp, #-4]! */
1917 0xe59fe010, /* ldr lr, [pc, #16] */
1918 0xe08fe00e, /* add lr, pc, lr */
1919 0xe5bef008, /* ldr pc, [lr, #8]! */
1922 /* Subsequent entries in a procedure linkage table look like
1924 static const bfd_vma elf32_arm_plt_entry
[] =
1926 0xe28fc600, /* add ip, pc, #NN */
1927 0xe28cca00, /* add ip, ip, #NN */
1928 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1929 0x00000000, /* unused */
1934 /* The first entry in a procedure linkage table looks like
1935 this. It is set up so that any shared library function that is
1936 called before the relocation has been set up calls the dynamic
1938 static const bfd_vma elf32_arm_plt0_entry
[] =
1940 0xe52de004, /* str lr, [sp, #-4]! */
1941 0xe59fe004, /* ldr lr, [pc, #4] */
1942 0xe08fe00e, /* add lr, pc, lr */
1943 0xe5bef008, /* ldr pc, [lr, #8]! */
1944 0x00000000, /* &GOT[0] - . */
1947 /* Subsequent entries in a procedure linkage table look like
1949 static const bfd_vma elf32_arm_plt_entry
[] =
1951 0xe28fc600, /* add ip, pc, #0xNN00000 */
1952 0xe28cca00, /* add ip, ip, #0xNN000 */
1953 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1958 /* The format of the first entry in the procedure linkage table
1959 for a VxWorks executable. */
1960 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry
[] =
1962 0xe52dc008, /* str ip,[sp,#-8]! */
1963 0xe59fc000, /* ldr ip,[pc] */
1964 0xe59cf008, /* ldr pc,[ip,#8] */
1965 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1968 /* The format of subsequent entries in a VxWorks executable. */
1969 static const bfd_vma elf32_arm_vxworks_exec_plt_entry
[] =
1971 0xe59fc000, /* ldr ip,[pc] */
1972 0xe59cf000, /* ldr pc,[ip] */
1973 0x00000000, /* .long @got */
1974 0xe59fc000, /* ldr ip,[pc] */
1975 0xea000000, /* b _PLT */
1976 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1979 /* The format of entries in a VxWorks shared library. */
1980 static const bfd_vma elf32_arm_vxworks_shared_plt_entry
[] =
1982 0xe59fc000, /* ldr ip,[pc] */
1983 0xe79cf009, /* ldr pc,[ip,r9] */
1984 0x00000000, /* .long @got */
1985 0xe59fc000, /* ldr ip,[pc] */
1986 0xe599f008, /* ldr pc,[r9,#8] */
1987 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1990 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1991 #define PLT_THUMB_STUB_SIZE 4
1992 static const bfd_vma elf32_arm_plt_thumb_stub
[] =
1998 /* The entries in a PLT when using a DLL-based target with multiple
2000 static const bfd_vma elf32_arm_symbian_plt_entry
[] =
2002 0xe51ff004, /* ldr pc, [pc, #-4] */
2003 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2006 #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
2007 #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
2008 #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
2009 #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
2010 #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
2011 #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
2021 #define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0}
2022 #define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0}
2023 #define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0}
2024 #define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)}
2025 #define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)}
2030 enum stub_insn_type type
;
2031 unsigned int r_type
;
2035 /* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx
2036 to reach the stub if necessary. */
2037 static const insn_sequence elf32_arm_stub_long_branch_any_any
[] =
2039 ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
2040 DATA_WORD(0, R_ARM_ABS32
, 0), /* dcd R_ARM_ABS32(X) */
2043 /* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not
2045 static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb
[] =
2047 ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
2048 ARM_INSN(0xe12fff1c), /* bx ip */
2049 DATA_WORD(0, R_ARM_ABS32
, 0), /* dcd R_ARM_ABS32(X) */
2052 /* Thumb -> Thumb long branch stub. Used on M-profile architectures. */
2053 static const insn_sequence elf32_arm_stub_long_branch_thumb_only
[] =
2055 THUMB16_INSN(0xb401), /* push {r0} */
2056 THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */
2057 THUMB16_INSN(0x4684), /* mov ip, r0 */
2058 THUMB16_INSN(0xbc01), /* pop {r0} */
2059 THUMB16_INSN(0x4760), /* bx ip */
2060 THUMB16_INSN(0xbf00), /* nop */
2061 DATA_WORD(0, R_ARM_ABS32
, 0), /* dcd R_ARM_ABS32(X) */
2064 /* V4T Thumb -> Thumb long branch stub. Using the stack is not
2066 static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb
[] =
2068 THUMB16_INSN(0x4778), /* bx pc */
2069 THUMB16_INSN(0x46c0), /* nop */
2070 ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
2071 ARM_INSN(0xe12fff1c), /* bx ip */
2072 DATA_WORD(0, R_ARM_ABS32
, 0), /* dcd R_ARM_ABS32(X) */
2075 /* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not
2077 static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm
[] =
2079 THUMB16_INSN(0x4778), /* bx pc */
2080 THUMB16_INSN(0x46c0), /* nop */
2081 ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
2082 DATA_WORD(0, R_ARM_ABS32
, 0), /* dcd R_ARM_ABS32(X) */
2085 /* V4T Thumb -> ARM short branch stub. Shorter variant of the above
2086 one, when the destination is close enough. */
2087 static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm
[] =
2089 THUMB16_INSN(0x4778), /* bx pc */
2090 THUMB16_INSN(0x46c0), /* nop */
2091 ARM_REL_INSN(0xea000000, -8), /* b (X-8) */
2094 /* ARM/Thumb -> ARM long branch stub, PIC. On V5T and above, use
2095 blx to reach the stub if necessary. */
2096 static const insn_sequence elf32_arm_stub_long_branch_any_arm_pic
[] =
2098 ARM_INSN(0xe59fc000), /* ldr r12, [pc] */
2099 ARM_INSN(0xe08ff00c), /* add pc, pc, ip */
2100 DATA_WORD(0, R_ARM_REL32
, -4), /* dcd R_ARM_REL32(X-4) */
2103 /* ARM/Thumb -> Thumb long branch stub, PIC. On V5T and above, use
2104 blx to reach the stub if necessary. We can not add into pc;
2105 it is not guaranteed to mode switch (different in ARMv6 and
2107 static const insn_sequence elf32_arm_stub_long_branch_any_thumb_pic
[] =
2109 ARM_INSN(0xe59fc004), /* ldr r12, [pc, #4] */
2110 ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
2111 ARM_INSN(0xe12fff1c), /* bx ip */
2112 DATA_WORD(0, R_ARM_REL32
, 0), /* dcd R_ARM_REL32(X) */
2115 /* V4T ARM -> ARM long branch stub, PIC. */
2116 static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb_pic
[] =
2118 ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */
2119 ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
2120 ARM_INSN(0xe12fff1c), /* bx ip */
2121 DATA_WORD(0, R_ARM_REL32
, 0), /* dcd R_ARM_REL32(X) */
2124 /* V4T Thumb -> ARM long branch stub, PIC. */
2125 static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm_pic
[] =
2127 THUMB16_INSN(0x4778), /* bx pc */
2128 THUMB16_INSN(0x46c0), /* nop */
2129 ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
2130 ARM_INSN(0xe08cf00f), /* add pc, ip, pc */
2131 DATA_WORD(0, R_ARM_REL32
, -4), /* dcd R_ARM_REL32(X) */
2134 /* Thumb -> Thumb long branch stub, PIC. Used on M-profile
2136 static const insn_sequence elf32_arm_stub_long_branch_thumb_only_pic
[] =
2138 THUMB16_INSN(0xb401), /* push {r0} */
2139 THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */
2140 THUMB16_INSN(0x46fc), /* mov ip, pc */
2141 THUMB16_INSN(0x4484), /* add ip, r0 */
2142 THUMB16_INSN(0xbc01), /* pop {r0} */
2143 THUMB16_INSN(0x4760), /* bx ip */
2144 DATA_WORD(0, R_ARM_REL32
, 4), /* dcd R_ARM_REL32(X) */
2147 /* V4T Thumb -> Thumb long branch stub, PIC. Using the stack is not
2149 static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb_pic
[] =
2151 THUMB16_INSN(0x4778), /* bx pc */
2152 THUMB16_INSN(0x46c0), /* nop */
2153 ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */
2154 ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
2155 ARM_INSN(0xe12fff1c), /* bx ip */
2156 DATA_WORD(0, R_ARM_REL32
, 0), /* dcd R_ARM_REL32(X) */
2159 /* Section name for stubs is the associated section name plus this
2161 #define STUB_SUFFIX ".stub"
2163 enum elf32_arm_stub_type
2166 arm_stub_long_branch_any_any
,
2167 arm_stub_long_branch_v4t_arm_thumb
,
2168 arm_stub_long_branch_thumb_only
,
2169 arm_stub_long_branch_v4t_thumb_thumb
,
2170 arm_stub_long_branch_v4t_thumb_arm
,
2171 arm_stub_short_branch_v4t_thumb_arm
,
2172 arm_stub_long_branch_any_arm_pic
,
2173 arm_stub_long_branch_any_thumb_pic
,
2174 arm_stub_long_branch_v4t_arm_thumb_pic
,
2175 arm_stub_long_branch_v4t_thumb_arm_pic
,
2176 arm_stub_long_branch_thumb_only_pic
,
2177 arm_stub_long_branch_v4t_thumb_thumb_pic
,
2180 struct elf32_arm_stub_hash_entry
2182 /* Base hash table entry structure. */
2183 struct bfd_hash_entry root
;
2185 /* The stub section. */
2188 /* Offset within stub_sec of the beginning of this stub. */
2189 bfd_vma stub_offset
;
2191 /* Given the symbol's value and its section we can determine its final
2192 value when building the stubs (so the stub knows where to jump). */
2193 bfd_vma target_value
;
2194 asection
*target_section
;
2196 /* The stub type. */
2197 enum elf32_arm_stub_type stub_type
;
2198 /* Its encoding size in bytes. */
2201 const insn_sequence
*stub_template
;
2202 /* The size of the template (number of entries). */
2203 int stub_template_size
;
2205 /* The symbol table entry, if any, that this was derived from. */
2206 struct elf32_arm_link_hash_entry
*h
;
2208 /* Destination symbol type (STT_ARM_TFUNC, ...) */
2209 unsigned char st_type
;
2211 /* Where this stub is being called from, or, in the case of combined
2212 stub sections, the first input section in the group. */
2215 /* The name for the local symbol at the start of this stub. The
2216 stub name in the hash table has to be unique; this does not, so
2217 it can be friendlier. */
2221 /* Used to build a map of a section. This is required for mixed-endian
2224 typedef struct elf32_elf_section_map
2229 elf32_arm_section_map
;
2231 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2235 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
,
2236 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
,
2237 VFP11_ERRATUM_ARM_VENEER
,
2238 VFP11_ERRATUM_THUMB_VENEER
2240 elf32_vfp11_erratum_type
;
2242 typedef struct elf32_vfp11_erratum_list
2244 struct elf32_vfp11_erratum_list
*next
;
2250 struct elf32_vfp11_erratum_list
*veneer
;
2251 unsigned int vfp_insn
;
2255 struct elf32_vfp11_erratum_list
*branch
;
2259 elf32_vfp11_erratum_type type
;
2261 elf32_vfp11_erratum_list
;
2263 typedef struct _arm_elf_section_data
2265 struct bfd_elf_section_data elf
;
2266 unsigned int mapcount
;
2267 unsigned int mapsize
;
2268 elf32_arm_section_map
*map
;
2269 unsigned int erratumcount
;
2270 elf32_vfp11_erratum_list
*erratumlist
;
2272 _arm_elf_section_data
;
2274 #define elf32_arm_section_data(sec) \
2275 ((_arm_elf_section_data *) elf_section_data (sec))
2277 /* The size of the thread control block. */
2280 struct elf_arm_obj_tdata
2282 struct elf_obj_tdata root
;
2284 /* tls_type for each local got entry. */
2285 char *local_got_tls_type
;
2287 /* Zero to warn when linking objects with incompatible enum sizes. */
2288 int no_enum_size_warning
;
2290 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2291 int no_wchar_size_warning
;
2294 #define elf_arm_tdata(bfd) \
2295 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
2297 #define elf32_arm_local_got_tls_type(bfd) \
2298 (elf_arm_tdata (bfd)->local_got_tls_type)
2300 #define is_arm_elf(bfd) \
2301 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2302 && elf_tdata (bfd) != NULL \
2303 && elf_object_id (bfd) == ARM_ELF_TDATA)
2306 elf32_arm_mkobject (bfd
*abfd
)
2308 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_arm_obj_tdata
),
2312 /* The ARM linker needs to keep track of the number of relocs that it
2313 decides to copy in check_relocs for each symbol. This is so that
2314 it can discard PC relative relocs if it doesn't need them when
2315 linking with -Bsymbolic. We store the information in a field
2316 extending the regular ELF linker hash table. */
2318 /* This structure keeps track of the number of relocs we have copied
2319 for a given symbol. */
2320 struct elf32_arm_relocs_copied
2323 struct elf32_arm_relocs_copied
* next
;
2324 /* A section in dynobj. */
2326 /* Number of relocs copied in this section. */
2327 bfd_size_type count
;
2328 /* Number of PC-relative relocs copied in this section. */
2329 bfd_size_type pc_count
;
2332 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2334 /* Arm ELF linker hash entry. */
2335 struct elf32_arm_link_hash_entry
2337 struct elf_link_hash_entry root
;
2339 /* Number of PC relative relocs copied for this symbol. */
2340 struct elf32_arm_relocs_copied
* relocs_copied
;
2342 /* We reference count Thumb references to a PLT entry separately,
2343 so that we can emit the Thumb trampoline only if needed. */
2344 bfd_signed_vma plt_thumb_refcount
;
2346 /* Some references from Thumb code may be eliminated by BL->BLX
2347 conversion, so record them separately. */
2348 bfd_signed_vma plt_maybe_thumb_refcount
;
2350 /* Since PLT entries have variable size if the Thumb prologue is
2351 used, we need to record the index into .got.plt instead of
2352 recomputing it from the PLT offset. */
2353 bfd_signed_vma plt_got_offset
;
2355 #define GOT_UNKNOWN 0
2356 #define GOT_NORMAL 1
2357 #define GOT_TLS_GD 2
2358 #define GOT_TLS_IE 4
2359 unsigned char tls_type
;
2361 /* The symbol marking the real symbol location for exported thumb
2362 symbols with Arm stubs. */
2363 struct elf_link_hash_entry
*export_glue
;
2365 /* A pointer to the most recently used stub hash entry against this
2367 struct elf32_arm_stub_hash_entry
*stub_cache
;
2370 /* Traverse an arm ELF linker hash table. */
2371 #define elf32_arm_link_hash_traverse(table, func, info) \
2372 (elf_link_hash_traverse \
2374 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2377 /* Get the ARM elf linker hash table from a link_info structure. */
2378 #define elf32_arm_hash_table(info) \
2379 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2381 #define arm_stub_hash_lookup(table, string, create, copy) \
2382 ((struct elf32_arm_stub_hash_entry *) \
2383 bfd_hash_lookup ((table), (string), (create), (copy)))
2385 /* ARM ELF linker hash table. */
2386 struct elf32_arm_link_hash_table
2388 /* The main hash table. */
2389 struct elf_link_hash_table root
;
2391 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2392 bfd_size_type thumb_glue_size
;
2394 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2395 bfd_size_type arm_glue_size
;
2397 /* The size in bytes of section containing the ARMv4 BX veneers. */
2398 bfd_size_type bx_glue_size
;
2400 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2401 veneer has been populated. */
2402 bfd_vma bx_glue_offset
[15];
2404 /* The size in bytes of the section containing glue for VFP11 erratum
2406 bfd_size_type vfp11_erratum_glue_size
;
2408 /* An arbitrary input BFD chosen to hold the glue sections. */
2409 bfd
* bfd_of_glue_owner
;
2411 /* Nonzero to output a BE8 image. */
2414 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2415 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2418 /* The relocation to use for R_ARM_TARGET2 relocations. */
2421 /* 0 = Ignore R_ARM_V4BX.
2422 1 = Convert BX to MOV PC.
2423 2 = Generate v4 interworing stubs. */
2426 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2429 /* What sort of code sequences we should look for which may trigger the
2430 VFP11 denorm erratum. */
2431 bfd_arm_vfp11_fix vfp11_fix
;
2433 /* Global counter for the number of fixes we have emitted. */
2434 int num_vfp11_fixes
;
2436 /* Nonzero to force PIC branch veneers. */
2439 /* The number of bytes in the initial entry in the PLT. */
2440 bfd_size_type plt_header_size
;
2442 /* The number of bytes in the subsequent PLT etries. */
2443 bfd_size_type plt_entry_size
;
2445 /* True if the target system is VxWorks. */
2448 /* True if the target system is Symbian OS. */
2451 /* True if the target uses REL relocations. */
2454 /* Short-cuts to get to dynamic linker sections. */
2463 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2466 /* Data for R_ARM_TLS_LDM32 relocations. */
2469 bfd_signed_vma refcount
;
2473 /* Small local sym to section mapping cache. */
2474 struct sym_sec_cache sym_sec
;
2476 /* For convenience in allocate_dynrelocs. */
2479 /* The stub hash table. */
2480 struct bfd_hash_table stub_hash_table
;
2482 /* Linker stub bfd. */
2485 /* Linker call-backs. */
2486 asection
* (*add_stub_section
) (const char *, asection
*);
2487 void (*layout_sections_again
) (void);
2489 /* Array to keep track of which stub sections have been created, and
2490 information on stub grouping. */
2493 /* This is the section to which stubs in the group will be
2496 /* The stub section. */
2500 /* Assorted information used by elf32_arm_size_stubs. */
2501 unsigned int bfd_count
;
2503 asection
**input_list
;
2506 /* Create an entry in an ARM ELF linker hash table. */
2508 static struct bfd_hash_entry
*
2509 elf32_arm_link_hash_newfunc (struct bfd_hash_entry
* entry
,
2510 struct bfd_hash_table
* table
,
2511 const char * string
)
2513 struct elf32_arm_link_hash_entry
* ret
=
2514 (struct elf32_arm_link_hash_entry
*) entry
;
2516 /* Allocate the structure if it has not already been allocated by a
2519 ret
= bfd_hash_allocate (table
, sizeof (struct elf32_arm_link_hash_entry
));
2521 return (struct bfd_hash_entry
*) ret
;
2523 /* Call the allocation method of the superclass. */
2524 ret
= ((struct elf32_arm_link_hash_entry
*)
2525 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2529 ret
->relocs_copied
= NULL
;
2530 ret
->tls_type
= GOT_UNKNOWN
;
2531 ret
->plt_thumb_refcount
= 0;
2532 ret
->plt_maybe_thumb_refcount
= 0;
2533 ret
->plt_got_offset
= -1;
2534 ret
->export_glue
= NULL
;
2536 ret
->stub_cache
= NULL
;
2539 return (struct bfd_hash_entry
*) ret
;
2542 /* Initialize an entry in the stub hash table. */
2544 static struct bfd_hash_entry
*
2545 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2546 struct bfd_hash_table
*table
,
2549 /* Allocate the structure if it has not already been allocated by a
2553 entry
= bfd_hash_allocate (table
,
2554 sizeof (struct elf32_arm_stub_hash_entry
));
2559 /* Call the allocation method of the superclass. */
2560 entry
= bfd_hash_newfunc (entry
, table
, string
);
2563 struct elf32_arm_stub_hash_entry
*eh
;
2565 /* Initialize the local fields. */
2566 eh
= (struct elf32_arm_stub_hash_entry
*) entry
;
2567 eh
->stub_sec
= NULL
;
2568 eh
->stub_offset
= 0;
2569 eh
->target_value
= 0;
2570 eh
->target_section
= NULL
;
2571 eh
->stub_type
= arm_stub_none
;
2573 eh
->stub_template
= NULL
;
2574 eh
->stub_template_size
= 0;
2582 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2583 shortcuts to them in our hash table. */
2586 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2588 struct elf32_arm_link_hash_table
*htab
;
2590 htab
= elf32_arm_hash_table (info
);
2591 /* BPABI objects never have a GOT, or associated sections. */
2592 if (htab
->symbian_p
)
2595 if (! _bfd_elf_create_got_section (dynobj
, info
))
2598 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
2599 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
2600 if (!htab
->sgot
|| !htab
->sgotplt
)
2603 htab
->srelgot
= bfd_make_section_with_flags (dynobj
,
2604 RELOC_SECTION (htab
, ".got"),
2605 (SEC_ALLOC
| SEC_LOAD
2608 | SEC_LINKER_CREATED
2610 if (htab
->srelgot
== NULL
2611 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
2616 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2617 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2621 elf32_arm_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
2623 struct elf32_arm_link_hash_table
*htab
;
2625 htab
= elf32_arm_hash_table (info
);
2626 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
2629 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
2632 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
2633 htab
->srelplt
= bfd_get_section_by_name (dynobj
,
2634 RELOC_SECTION (htab
, ".plt"));
2635 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
2637 htab
->srelbss
= bfd_get_section_by_name (dynobj
,
2638 RELOC_SECTION (htab
, ".bss"));
2640 if (htab
->vxworks_p
)
2642 if (!elf_vxworks_create_dynamic_sections (dynobj
, info
, &htab
->srelplt2
))
2647 htab
->plt_header_size
= 0;
2648 htab
->plt_entry_size
2649 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry
);
2653 htab
->plt_header_size
2654 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry
);
2655 htab
->plt_entry_size
2656 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry
);
2663 || (!info
->shared
&& !htab
->srelbss
))
2669 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2672 elf32_arm_copy_indirect_symbol (struct bfd_link_info
*info
,
2673 struct elf_link_hash_entry
*dir
,
2674 struct elf_link_hash_entry
*ind
)
2676 struct elf32_arm_link_hash_entry
*edir
, *eind
;
2678 edir
= (struct elf32_arm_link_hash_entry
*) dir
;
2679 eind
= (struct elf32_arm_link_hash_entry
*) ind
;
2681 if (eind
->relocs_copied
!= NULL
)
2683 if (edir
->relocs_copied
!= NULL
)
2685 struct elf32_arm_relocs_copied
**pp
;
2686 struct elf32_arm_relocs_copied
*p
;
2688 /* Add reloc counts against the indirect sym to the direct sym
2689 list. Merge any entries against the same section. */
2690 for (pp
= &eind
->relocs_copied
; (p
= *pp
) != NULL
; )
2692 struct elf32_arm_relocs_copied
*q
;
2694 for (q
= edir
->relocs_copied
; q
!= NULL
; q
= q
->next
)
2695 if (q
->section
== p
->section
)
2697 q
->pc_count
+= p
->pc_count
;
2698 q
->count
+= p
->count
;
2705 *pp
= edir
->relocs_copied
;
2708 edir
->relocs_copied
= eind
->relocs_copied
;
2709 eind
->relocs_copied
= NULL
;
2712 if (ind
->root
.type
== bfd_link_hash_indirect
)
2714 /* Copy over PLT info. */
2715 edir
->plt_thumb_refcount
+= eind
->plt_thumb_refcount
;
2716 eind
->plt_thumb_refcount
= 0;
2717 edir
->plt_maybe_thumb_refcount
+= eind
->plt_maybe_thumb_refcount
;
2718 eind
->plt_maybe_thumb_refcount
= 0;
2720 if (dir
->got
.refcount
<= 0)
2722 edir
->tls_type
= eind
->tls_type
;
2723 eind
->tls_type
= GOT_UNKNOWN
;
2727 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2730 /* Create an ARM elf linker hash table. */
2732 static struct bfd_link_hash_table
*
2733 elf32_arm_link_hash_table_create (bfd
*abfd
)
2735 struct elf32_arm_link_hash_table
*ret
;
2736 bfd_size_type amt
= sizeof (struct elf32_arm_link_hash_table
);
2738 ret
= bfd_malloc (amt
);
2742 if (!_bfd_elf_link_hash_table_init (& ret
->root
, abfd
,
2743 elf32_arm_link_hash_newfunc
,
2744 sizeof (struct elf32_arm_link_hash_entry
)))
2751 ret
->sgotplt
= NULL
;
2752 ret
->srelgot
= NULL
;
2754 ret
->srelplt
= NULL
;
2755 ret
->sdynbss
= NULL
;
2756 ret
->srelbss
= NULL
;
2757 ret
->srelplt2
= NULL
;
2758 ret
->thumb_glue_size
= 0;
2759 ret
->arm_glue_size
= 0;
2760 ret
->bx_glue_size
= 0;
2761 memset (ret
->bx_glue_offset
, 0, sizeof (ret
->bx_glue_offset
));
2762 ret
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
2763 ret
->vfp11_erratum_glue_size
= 0;
2764 ret
->num_vfp11_fixes
= 0;
2765 ret
->bfd_of_glue_owner
= NULL
;
2766 ret
->byteswap_code
= 0;
2767 ret
->target1_is_rel
= 0;
2768 ret
->target2_reloc
= R_ARM_NONE
;
2769 #ifdef FOUR_WORD_PLT
2770 ret
->plt_header_size
= 16;
2771 ret
->plt_entry_size
= 16;
2773 ret
->plt_header_size
= 20;
2774 ret
->plt_entry_size
= 12;
2781 ret
->sym_sec
.abfd
= NULL
;
2783 ret
->tls_ldm_got
.refcount
= 0;
2784 ret
->stub_bfd
= NULL
;
2785 ret
->add_stub_section
= NULL
;
2786 ret
->layout_sections_again
= NULL
;
2787 ret
->stub_group
= NULL
;
2790 ret
->input_list
= NULL
;
2792 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
,
2793 sizeof (struct elf32_arm_stub_hash_entry
)))
2799 return &ret
->root
.root
;
2802 /* Free the derived linker hash table. */
2805 elf32_arm_hash_table_free (struct bfd_link_hash_table
*hash
)
2807 struct elf32_arm_link_hash_table
*ret
2808 = (struct elf32_arm_link_hash_table
*) hash
;
2810 bfd_hash_table_free (&ret
->stub_hash_table
);
2811 _bfd_generic_link_hash_table_free (hash
);
2814 /* Determine if we're dealing with a Thumb only architecture. */
2817 using_thumb_only (struct elf32_arm_link_hash_table
*globals
)
2819 int arch
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2823 if (arch
!= TAG_CPU_ARCH_V7
)
2826 profile
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2827 Tag_CPU_arch_profile
);
2829 return profile
== 'M';
2832 /* Determine if we're dealing with a Thumb-2 object. */
2835 using_thumb2 (struct elf32_arm_link_hash_table
*globals
)
2837 int arch
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2839 return arch
== TAG_CPU_ARCH_V6T2
|| arch
>= TAG_CPU_ARCH_V7
;
2843 arm_stub_is_thumb (enum elf32_arm_stub_type stub_type
)
2847 case arm_stub_long_branch_thumb_only
:
2848 case arm_stub_long_branch_v4t_thumb_arm
:
2849 case arm_stub_short_branch_v4t_thumb_arm
:
2850 case arm_stub_long_branch_v4t_thumb_arm_pic
:
2851 case arm_stub_long_branch_thumb_only_pic
:
2862 /* Determine the type of stub needed, if any, for a call. */
2864 static enum elf32_arm_stub_type
2865 arm_type_of_stub (struct bfd_link_info
*info
,
2866 asection
*input_sec
,
2867 const Elf_Internal_Rela
*rel
,
2868 unsigned char st_type
,
2869 struct elf32_arm_link_hash_entry
*hash
,
2870 bfd_vma destination
,
2876 bfd_signed_vma branch_offset
;
2877 unsigned int r_type
;
2878 struct elf32_arm_link_hash_table
* globals
;
2881 enum elf32_arm_stub_type stub_type
= arm_stub_none
;
2884 /* We don't know the actual type of destination in case it is of
2885 type STT_SECTION: give up. */
2886 if (st_type
== STT_SECTION
)
2889 globals
= elf32_arm_hash_table (info
);
2891 thumb_only
= using_thumb_only (globals
);
2893 thumb2
= using_thumb2 (globals
);
2895 /* Determine where the call point is. */
2896 location
= (input_sec
->output_offset
2897 + input_sec
->output_section
->vma
2900 branch_offset
= (bfd_signed_vma
)(destination
- location
);
2902 r_type
= ELF32_R_TYPE (rel
->r_info
);
2904 /* Keep a simpler condition, for the sake of clarity. */
2905 if (globals
->splt
!= NULL
&& hash
!= NULL
&& hash
->root
.plt
.offset
!= (bfd_vma
) -1)
2908 /* Note when dealing with PLT entries: the main PLT stub is in
2909 ARM mode, so if the branch is in Thumb mode, another
2910 Thumb->ARM stub will be inserted later just before the ARM
2911 PLT stub. We don't take this extra distance into account
2912 here, because if a long branch stub is needed, we'll add a
2913 Thumb->Arm one and branch directly to the ARM PLT entry
2914 because it avoids spreading offset corrections in several
2918 if (r_type
== R_ARM_THM_CALL
)
2920 /* Handle cases where:
2921 - this call goes too far (different Thumb/Thumb2 max
2923 - it's a Thumb->Arm call and blx is not available. A stub is
2924 needed in this case, but only if this call is not through a
2925 PLT entry. Indeed, PLT stubs handle mode switching already.
2928 && (branch_offset
> THM_MAX_FWD_BRANCH_OFFSET
2929 || (branch_offset
< THM_MAX_BWD_BRANCH_OFFSET
)))
2931 && (branch_offset
> THM2_MAX_FWD_BRANCH_OFFSET
2932 || (branch_offset
< THM2_MAX_BWD_BRANCH_OFFSET
)))
2933 || ((st_type
!= STT_ARM_TFUNC
)
2934 && ((r_type
== R_ARM_THM_CALL
) && !globals
->use_blx
)
2937 if (st_type
== STT_ARM_TFUNC
)
2939 /* Thumb to thumb. */
2942 stub_type
= (info
->shared
| globals
->pic_veneer
)
2944 ? ((globals
->use_blx
)
2945 /* V5T and above. */
2946 ? arm_stub_long_branch_any_thumb_pic
2947 /* On V4T, use Thumb code only. */
2948 : arm_stub_long_branch_v4t_thumb_thumb_pic
)
2950 /* non-PIC stubs. */
2951 : ((globals
->use_blx
)
2952 /* V5T and above. */
2953 ? arm_stub_long_branch_any_any
2955 : arm_stub_long_branch_v4t_thumb_thumb
);
2959 stub_type
= (info
->shared
| globals
->pic_veneer
)
2961 ? arm_stub_long_branch_thumb_only_pic
2963 : arm_stub_long_branch_thumb_only
;
2970 && sym_sec
->owner
!= NULL
2971 && !INTERWORK_FLAG (sym_sec
->owner
))
2973 (*_bfd_error_handler
)
2974 (_("%B(%s): warning: interworking not enabled.\n"
2975 " first occurrence: %B: Thumb call to ARM"),
2976 sym_sec
->owner
, input_bfd
, name
);
2979 stub_type
= (info
->shared
| globals
->pic_veneer
)
2981 ? ((globals
->use_blx
)
2982 /* V5T and above. */
2983 ? arm_stub_long_branch_any_arm_pic
2985 : arm_stub_long_branch_v4t_thumb_arm_pic
)
2987 /* non-PIC stubs. */
2988 : ((globals
->use_blx
)
2989 /* V5T and above. */
2990 ? arm_stub_long_branch_any_any
2992 : arm_stub_long_branch_v4t_thumb_arm
);
2994 /* Handle v4t short branches. */
2995 if ((stub_type
== arm_stub_long_branch_v4t_thumb_arm
)
2996 && (branch_offset
<= THM_MAX_FWD_BRANCH_OFFSET
)
2997 && (branch_offset
>= THM_MAX_BWD_BRANCH_OFFSET
))
2998 stub_type
= arm_stub_short_branch_v4t_thumb_arm
;
3002 else if (r_type
== R_ARM_CALL
)
3004 if (st_type
== STT_ARM_TFUNC
)
3009 && sym_sec
->owner
!= NULL
3010 && !INTERWORK_FLAG (sym_sec
->owner
))
3012 (*_bfd_error_handler
)
3013 (_("%B(%s): warning: interworking not enabled.\n"
3014 " first occurrence: %B: ARM call to Thumb"),
3015 sym_sec
->owner
, input_bfd
, name
);
3018 /* We have an extra 2-bytes reach because of
3019 the mode change (bit 24 (H) of BLX encoding). */
3020 if (branch_offset
> (ARM_MAX_FWD_BRANCH_OFFSET
+ 2)
3021 || (branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
)
3022 || !globals
->use_blx
)
3024 stub_type
= (info
->shared
| globals
->pic_veneer
)
3026 ? ((globals
->use_blx
)
3027 /* V5T and above. */
3028 ? arm_stub_long_branch_any_thumb_pic
3030 : arm_stub_long_branch_v4t_arm_thumb_pic
)
3032 /* non-PIC stubs. */
3033 : ((globals
->use_blx
)
3034 /* V5T and above. */
3035 ? arm_stub_long_branch_any_any
3037 : arm_stub_long_branch_v4t_arm_thumb
);
3043 if (branch_offset
> ARM_MAX_FWD_BRANCH_OFFSET
3044 || (branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
))
3046 stub_type
= (info
->shared
| globals
->pic_veneer
)
3048 ? arm_stub_long_branch_any_arm_pic
3049 /* non-PIC stubs. */
3050 : arm_stub_long_branch_any_any
;
3058 /* Build a name for an entry in the stub hash table. */
3061 elf32_arm_stub_name (const asection
*input_section
,
3062 const asection
*sym_sec
,
3063 const struct elf32_arm_link_hash_entry
*hash
,
3064 const Elf_Internal_Rela
*rel
)
3071 len
= 8 + 1 + strlen (hash
->root
.root
.root
.string
) + 1 + 8 + 1;
3072 stub_name
= bfd_malloc (len
);
3073 if (stub_name
!= NULL
)
3074 sprintf (stub_name
, "%08x_%s+%x",
3075 input_section
->id
& 0xffffffff,
3076 hash
->root
.root
.root
.string
,
3077 (int) rel
->r_addend
& 0xffffffff);
3081 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3082 stub_name
= bfd_malloc (len
);
3083 if (stub_name
!= NULL
)
3084 sprintf (stub_name
, "%08x_%x:%x+%x",
3085 input_section
->id
& 0xffffffff,
3086 sym_sec
->id
& 0xffffffff,
3087 (int) ELF32_R_SYM (rel
->r_info
) & 0xffffffff,
3088 (int) rel
->r_addend
& 0xffffffff);
3094 /* Look up an entry in the stub hash. Stub entries are cached because
3095 creating the stub name takes a bit of time. */
3097 static struct elf32_arm_stub_hash_entry
*
3098 elf32_arm_get_stub_entry (const asection
*input_section
,
3099 const asection
*sym_sec
,
3100 struct elf_link_hash_entry
*hash
,
3101 const Elf_Internal_Rela
*rel
,
3102 struct elf32_arm_link_hash_table
*htab
)
3104 struct elf32_arm_stub_hash_entry
*stub_entry
;
3105 struct elf32_arm_link_hash_entry
*h
= (struct elf32_arm_link_hash_entry
*) hash
;
3106 const asection
*id_sec
;
3108 if ((input_section
->flags
& SEC_CODE
) == 0)
3111 /* If this input section is part of a group of sections sharing one
3112 stub section, then use the id of the first section in the group.
3113 Stub names need to include a section id, as there may well be
3114 more than one stub used to reach say, printf, and we need to
3115 distinguish between them. */
3116 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3118 if (h
!= NULL
&& h
->stub_cache
!= NULL
3119 && h
->stub_cache
->h
== h
3120 && h
->stub_cache
->id_sec
== id_sec
)
3122 stub_entry
= h
->stub_cache
;
3128 stub_name
= elf32_arm_stub_name (id_sec
, sym_sec
, h
, rel
);
3129 if (stub_name
== NULL
)
3132 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
,
3133 stub_name
, FALSE
, FALSE
);
3135 h
->stub_cache
= stub_entry
;
3143 /* Add a new stub entry to the stub hash. Not all fields of the new
3144 stub entry are initialised. */
3146 static struct elf32_arm_stub_hash_entry
*
3147 elf32_arm_add_stub (const char *stub_name
,
3149 struct elf32_arm_link_hash_table
*htab
)
3153 struct elf32_arm_stub_hash_entry
*stub_entry
;
3155 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3156 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3157 if (stub_sec
== NULL
)
3159 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3160 if (stub_sec
== NULL
)
3166 namelen
= strlen (link_sec
->name
);
3167 len
= namelen
+ sizeof (STUB_SUFFIX
);
3168 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3172 memcpy (s_name
, link_sec
->name
, namelen
);
3173 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3174 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3175 if (stub_sec
== NULL
)
3177 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3179 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3182 /* Enter this entry into the linker stub hash table. */
3183 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3185 if (stub_entry
== NULL
)
3187 (*_bfd_error_handler
) (_("%s: cannot create stub entry %s"),
3193 stub_entry
->stub_sec
= stub_sec
;
3194 stub_entry
->stub_offset
= 0;
3195 stub_entry
->id_sec
= link_sec
;
3200 /* Store an Arm insn into an output section not processed by
3201 elf32_arm_write_section. */
3204 put_arm_insn (struct elf32_arm_link_hash_table
* htab
,
3205 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3207 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3208 bfd_putl32 (val
, ptr
);
3210 bfd_putb32 (val
, ptr
);
3213 /* Store a 16-bit Thumb insn into an output section not processed by
3214 elf32_arm_write_section. */
3217 put_thumb_insn (struct elf32_arm_link_hash_table
* htab
,
3218 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3220 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3221 bfd_putl16 (val
, ptr
);
3223 bfd_putb16 (val
, ptr
);
3227 arm_build_one_stub (struct bfd_hash_entry
*gen_entry
,
3230 struct elf32_arm_stub_hash_entry
*stub_entry
;
3231 struct bfd_link_info
*info
;
3232 struct elf32_arm_link_hash_table
*htab
;
3240 const insn_sequence
*template;
3242 struct elf32_arm_link_hash_table
* globals
;
3243 int stub_reloc_idx
= -1;
3244 int stub_reloc_offset
= 0;
3246 /* Massage our args to the form they really have. */
3247 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
3248 info
= (struct bfd_link_info
*) in_arg
;
3250 globals
= elf32_arm_hash_table (info
);
3252 htab
= elf32_arm_hash_table (info
);
3253 stub_sec
= stub_entry
->stub_sec
;
3255 /* Make a note of the offset within the stubs for this entry. */
3256 stub_entry
->stub_offset
= stub_sec
->size
;
3257 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
3259 stub_bfd
= stub_sec
->owner
;
3261 /* This is the address of the start of the stub. */
3262 stub_addr
= stub_sec
->output_section
->vma
+ stub_sec
->output_offset
3263 + stub_entry
->stub_offset
;
3265 /* This is the address of the stub destination. */
3266 sym_value
= (stub_entry
->target_value
3267 + stub_entry
->target_section
->output_offset
3268 + stub_entry
->target_section
->output_section
->vma
);
3270 template = stub_entry
->stub_template
;
3271 template_size
= stub_entry
->stub_template_size
;
3274 for (i
= 0; i
< template_size
; i
++)
3276 switch (template[i
].type
)
3279 put_thumb_insn (globals
, stub_bfd
, template[i
].data
, loc
+ size
);
3284 put_arm_insn (globals
, stub_bfd
, template[i
].data
, loc
+ size
);
3285 /* Handle cases where the target is encoded within the
3287 if (template[i
].r_type
== R_ARM_JUMP24
)
3290 stub_reloc_offset
= size
;
3296 bfd_put_32 (stub_bfd
, template[i
].data
, loc
+ size
);
3298 stub_reloc_offset
= size
;
3308 stub_sec
->size
+= size
;
3310 /* Stub size has already been computed in arm_size_one_stub. Check
3312 BFD_ASSERT (size
== stub_entry
->stub_size
);
3314 /* Destination is Thumb. Force bit 0 to 1 to reflect this. */
3315 if (stub_entry
->st_type
== STT_ARM_TFUNC
)
3318 /* Assume there is one and only one entry to relocate in each stub. */
3319 BFD_ASSERT (stub_reloc_idx
!= -1);
3321 _bfd_final_link_relocate (elf32_arm_howto_from_type (template[stub_reloc_idx
].r_type
),
3322 stub_bfd
, stub_sec
, stub_sec
->contents
,
3323 stub_entry
->stub_offset
+ stub_reloc_offset
,
3324 sym_value
, template[stub_reloc_idx
].reloc_addend
);
3329 /* As above, but don't actually build the stub. Just bump offset so
3330 we know stub section sizes. */
3333 arm_size_one_stub (struct bfd_hash_entry
*gen_entry
,
3336 struct elf32_arm_stub_hash_entry
*stub_entry
;
3337 struct elf32_arm_link_hash_table
*htab
;
3338 const insn_sequence
*template;
3343 /* Massage our args to the form they really have. */
3344 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
3345 htab
= (struct elf32_arm_link_hash_table
*) in_arg
;
3347 switch (stub_entry
->stub_type
)
3349 case arm_stub_long_branch_any_any
:
3350 template = elf32_arm_stub_long_branch_any_any
;
3351 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_any_any
);
3353 case arm_stub_long_branch_v4t_arm_thumb
:
3354 template = elf32_arm_stub_long_branch_v4t_arm_thumb
;
3355 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_v4t_arm_thumb
);
3357 case arm_stub_long_branch_thumb_only
:
3358 template = elf32_arm_stub_long_branch_thumb_only
;
3359 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_thumb_only
);
3361 case arm_stub_long_branch_v4t_thumb_thumb
:
3362 template = elf32_arm_stub_long_branch_v4t_thumb_thumb
;
3363 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_v4t_thumb_thumb
);
3365 case arm_stub_long_branch_v4t_thumb_arm
:
3366 template = elf32_arm_stub_long_branch_v4t_thumb_arm
;
3367 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_v4t_thumb_arm
);
3369 case arm_stub_short_branch_v4t_thumb_arm
:
3370 template = elf32_arm_stub_short_branch_v4t_thumb_arm
;
3371 template_size
= ARRAY_SIZE (elf32_arm_stub_short_branch_v4t_thumb_arm
);
3373 case arm_stub_long_branch_any_arm_pic
:
3374 template = elf32_arm_stub_long_branch_any_arm_pic
;
3375 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_any_arm_pic
);
3377 case arm_stub_long_branch_any_thumb_pic
:
3378 template = elf32_arm_stub_long_branch_any_thumb_pic
;
3379 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_any_thumb_pic
);
3381 case arm_stub_long_branch_v4t_arm_thumb_pic
:
3382 template = elf32_arm_stub_long_branch_v4t_arm_thumb_pic
;
3383 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_v4t_arm_thumb_pic
);
3385 case arm_stub_long_branch_v4t_thumb_arm_pic
:
3386 template = elf32_arm_stub_long_branch_v4t_thumb_arm_pic
;
3387 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_v4t_thumb_arm_pic
);
3389 case arm_stub_long_branch_thumb_only_pic
:
3390 template = elf32_arm_stub_long_branch_thumb_only_pic
;
3391 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_thumb_only_pic
);
3393 case arm_stub_long_branch_v4t_thumb_thumb_pic
:
3394 template = elf32_arm_stub_long_branch_v4t_thumb_thumb_pic
;
3395 template_size
= ARRAY_SIZE (elf32_arm_stub_long_branch_v4t_thumb_thumb_pic
);
3403 for (i
= 0; i
< template_size
; i
++)
3405 switch (template[i
].type
)
3425 stub_entry
->stub_size
= size
;
3426 stub_entry
->stub_template
= template;
3427 stub_entry
->stub_template_size
= template_size
;
3429 size
= (size
+ 7) & ~7;
3430 stub_entry
->stub_sec
->size
+= size
;
3435 /* External entry points for sizing and building linker stubs. */
3437 /* Set up various things so that we can make a list of input sections
3438 for each output section included in the link. Returns -1 on error,
3439 0 when no stubs will be needed, and 1 on success. */
3442 elf32_arm_setup_section_lists (bfd
*output_bfd
,
3443 struct bfd_link_info
*info
)
3446 unsigned int bfd_count
;
3447 int top_id
, top_index
;
3449 asection
**input_list
, **list
;
3451 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3453 if (! is_elf_hash_table (htab
))
3456 /* Count the number of input BFDs and find the top input section id. */
3457 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3459 input_bfd
= input_bfd
->link_next
)
3462 for (section
= input_bfd
->sections
;
3464 section
= section
->next
)
3466 if (top_id
< section
->id
)
3467 top_id
= section
->id
;
3470 htab
->bfd_count
= bfd_count
;
3472 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3473 htab
->stub_group
= bfd_zmalloc (amt
);
3474 if (htab
->stub_group
== NULL
)
3477 /* We can't use output_bfd->section_count here to find the top output
3478 section index as some sections may have been removed, and
3479 _bfd_strip_section_from_output doesn't renumber the indices. */
3480 for (section
= output_bfd
->sections
, top_index
= 0;
3482 section
= section
->next
)
3484 if (top_index
< section
->index
)
3485 top_index
= section
->index
;
3488 htab
->top_index
= top_index
;
3489 amt
= sizeof (asection
*) * (top_index
+ 1);
3490 input_list
= bfd_malloc (amt
);
3491 htab
->input_list
= input_list
;
3492 if (input_list
== NULL
)
3495 /* For sections we aren't interested in, mark their entries with a
3496 value we can check later. */
3497 list
= input_list
+ top_index
;
3499 *list
= bfd_abs_section_ptr
;
3500 while (list
-- != input_list
);
3502 for (section
= output_bfd
->sections
;
3504 section
= section
->next
)
3506 if ((section
->flags
& SEC_CODE
) != 0)
3507 input_list
[section
->index
] = NULL
;
3513 /* The linker repeatedly calls this function for each input section,
3514 in the order that input sections are linked into output sections.
3515 Build lists of input sections to determine groupings between which
3516 we may insert linker stubs. */
3519 elf32_arm_next_input_section (struct bfd_link_info
*info
,
3522 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3524 if (isec
->output_section
->index
<= htab
->top_index
)
3526 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
3528 if (*list
!= bfd_abs_section_ptr
)
3530 /* Steal the link_sec pointer for our list. */
3531 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3532 /* This happens to make the list in reverse order,
3533 which we reverse later. */
3534 PREV_SEC (isec
) = *list
;
3540 /* See whether we can group stub sections together. Grouping stub
3541 sections may result in fewer stubs. More importantly, we need to
3542 put all .init* and .fini* stubs at the end of the .init or
3543 .fini output sections respectively, because glibc splits the
3544 _init and _fini functions into multiple parts. Putting a stub in
3545 the middle of a function is not a good idea. */
3548 group_sections (struct elf32_arm_link_hash_table
*htab
,
3549 bfd_size_type stub_group_size
,
3550 bfd_boolean stubs_always_after_branch
)
3552 asection
**list
= htab
->input_list
;
3556 asection
*tail
= *list
;
3559 if (tail
== bfd_abs_section_ptr
)
3562 /* Reverse the list: we must avoid placing stubs at the
3563 beginning of the section because the beginning of the text
3564 section may be required for an interrupt vector in bare metal
3566 #define NEXT_SEC PREV_SEC
3568 while (tail
!= NULL
)
3570 /* Pop from tail. */
3571 asection
*item
= tail
;
3572 tail
= PREV_SEC (item
);
3575 NEXT_SEC (item
) = head
;
3579 while (head
!= NULL
)
3583 bfd_vma stub_group_start
= head
->output_offset
;
3584 bfd_vma end_of_next
;
3587 while (NEXT_SEC (curr
) != NULL
)
3589 next
= NEXT_SEC (curr
);
3590 end_of_next
= next
->output_offset
+ next
->size
;
3591 if (end_of_next
- stub_group_start
>= stub_group_size
)
3592 /* End of NEXT is too far from start, so stop. */
3594 /* Add NEXT to the group. */
3598 /* OK, the size from the start to the start of CURR is less
3599 than stub_group_size and thus can be handled by one stub
3600 section. (Or the head section is itself larger than
3601 stub_group_size, in which case we may be toast.)
3602 We should really be keeping track of the total size of
3603 stubs added here, as stubs contribute to the final output
3607 next
= NEXT_SEC (head
);
3608 /* Set up this stub group. */
3609 htab
->stub_group
[head
->id
].link_sec
= curr
;
3611 while (head
!= curr
&& (head
= next
) != NULL
);
3613 /* But wait, there's more! Input sections up to stub_group_size
3614 bytes after the stub section can be handled by it too. */
3615 if (!stubs_always_after_branch
)
3617 stub_group_start
= curr
->output_offset
+ curr
->size
;
3619 while (next
!= NULL
)
3621 end_of_next
= next
->output_offset
+ next
->size
;
3622 if (end_of_next
- stub_group_start
>= stub_group_size
)
3623 /* End of NEXT is too far from stubs, so stop. */
3625 /* Add NEXT to the stub group. */
3627 next
= NEXT_SEC (head
);
3628 htab
->stub_group
[head
->id
].link_sec
= curr
;
3634 while (list
++ != htab
->input_list
+ htab
->top_index
);
3636 free (htab
->input_list
);
3641 /* Determine and set the size of the stub section for a final link.
3643 The basic idea here is to examine all the relocations looking for
3644 PC-relative calls to a target that is unreachable with a "bl"
3648 elf32_arm_size_stubs (bfd
*output_bfd
,
3650 struct bfd_link_info
*info
,
3651 bfd_signed_vma group_size
,
3652 asection
* (*add_stub_section
) (const char *, asection
*),
3653 void (*layout_sections_again
) (void))
3655 bfd_size_type stub_group_size
;
3656 bfd_boolean stubs_always_after_branch
;
3657 bfd_boolean stub_changed
= 0;
3658 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3660 /* Propagate mach to stub bfd, because it may not have been
3661 finalized when we created stub_bfd. */
3662 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
3663 bfd_get_mach (output_bfd
));
3665 /* Stash our params away. */
3666 htab
->stub_bfd
= stub_bfd
;
3667 htab
->add_stub_section
= add_stub_section
;
3668 htab
->layout_sections_again
= layout_sections_again
;
3669 stubs_always_after_branch
= group_size
< 0;
3671 stub_group_size
= -group_size
;
3673 stub_group_size
= group_size
;
3675 if (stub_group_size
== 1)
3677 /* Default values. */
3678 /* Thumb branch range is +-4MB has to be used as the default
3679 maximum size (a given section can contain both ARM and Thumb
3680 code, so the worst case has to be taken into account).
3682 This value is 24K less than that, which allows for 2025
3683 12-byte stubs. If we exceed that, then we will fail to link.
3684 The user will have to relink with an explicit group size
3686 stub_group_size
= 4170000;
3689 group_sections (htab
, stub_group_size
, stubs_always_after_branch
);
3694 unsigned int bfd_indx
;
3697 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
3699 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
3701 Elf_Internal_Shdr
*symtab_hdr
;
3703 Elf_Internal_Sym
*local_syms
= NULL
;
3705 /* We'll need the symbol table in a second. */
3706 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3707 if (symtab_hdr
->sh_info
== 0)
3710 /* Walk over each section attached to the input bfd. */
3711 for (section
= input_bfd
->sections
;
3713 section
= section
->next
)
3715 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
3717 /* If there aren't any relocs, then there's nothing more
3719 if ((section
->flags
& SEC_RELOC
) == 0
3720 || section
->reloc_count
== 0
3721 || (section
->flags
& SEC_CODE
) == 0)
3724 /* If this section is a link-once section that will be
3725 discarded, then don't create any stubs. */
3726 if (section
->output_section
== NULL
3727 || section
->output_section
->owner
!= output_bfd
)
3730 /* Get the relocs. */
3732 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
3733 NULL
, info
->keep_memory
);
3734 if (internal_relocs
== NULL
)
3735 goto error_ret_free_local
;
3737 /* Now examine each relocation. */
3738 irela
= internal_relocs
;
3739 irelaend
= irela
+ section
->reloc_count
;
3740 for (; irela
< irelaend
; irela
++)
3742 unsigned int r_type
, r_indx
;
3743 enum elf32_arm_stub_type stub_type
;
3744 struct elf32_arm_stub_hash_entry
*stub_entry
;
3747 bfd_vma destination
;
3748 struct elf32_arm_link_hash_entry
*hash
;
3749 const char *sym_name
;
3751 const asection
*id_sec
;
3752 unsigned char st_type
;
3754 r_type
= ELF32_R_TYPE (irela
->r_info
);
3755 r_indx
= ELF32_R_SYM (irela
->r_info
);
3757 if (r_type
>= (unsigned int) R_ARM_max
)
3759 bfd_set_error (bfd_error_bad_value
);
3760 error_ret_free_internal
:
3761 if (elf_section_data (section
)->relocs
== NULL
)
3762 free (internal_relocs
);
3763 goto error_ret_free_local
;
3766 /* Only look for stubs on call instructions. */
3767 if ((r_type
!= (unsigned int) R_ARM_CALL
)
3768 && (r_type
!= (unsigned int) R_ARM_THM_CALL
))
3771 /* Now determine the call target, its name, value,
3778 if (r_indx
< symtab_hdr
->sh_info
)
3780 /* It's a local symbol. */
3781 Elf_Internal_Sym
*sym
;
3782 Elf_Internal_Shdr
*hdr
;
3784 if (local_syms
== NULL
)
3787 = (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3788 if (local_syms
== NULL
)
3790 = bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
3791 symtab_hdr
->sh_info
, 0,
3793 if (local_syms
== NULL
)
3794 goto error_ret_free_internal
;
3797 sym
= local_syms
+ r_indx
;
3798 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
3799 sym_sec
= hdr
->bfd_section
;
3800 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
3801 sym_value
= sym
->st_value
;
3802 destination
= (sym_value
+ irela
->r_addend
3803 + sym_sec
->output_offset
3804 + sym_sec
->output_section
->vma
);
3805 st_type
= ELF_ST_TYPE (sym
->st_info
);
3807 = bfd_elf_string_from_elf_section (input_bfd
,
3808 symtab_hdr
->sh_link
,
3813 /* It's an external symbol. */
3816 e_indx
= r_indx
- symtab_hdr
->sh_info
;
3817 hash
= ((struct elf32_arm_link_hash_entry
*)
3818 elf_sym_hashes (input_bfd
)[e_indx
]);
3820 while (hash
->root
.root
.type
== bfd_link_hash_indirect
3821 || hash
->root
.root
.type
== bfd_link_hash_warning
)
3822 hash
= ((struct elf32_arm_link_hash_entry
*)
3823 hash
->root
.root
.u
.i
.link
);
3825 if (hash
->root
.root
.type
== bfd_link_hash_defined
3826 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
3828 sym_sec
= hash
->root
.root
.u
.def
.section
;
3829 sym_value
= hash
->root
.root
.u
.def
.value
;
3830 if (sym_sec
->output_section
!= NULL
)
3831 destination
= (sym_value
+ irela
->r_addend
3832 + sym_sec
->output_offset
3833 + sym_sec
->output_section
->vma
);
3835 else if ((hash
->root
.root
.type
== bfd_link_hash_undefined
)
3836 || (hash
->root
.root
.type
== bfd_link_hash_undefweak
))
3838 /* For a shared library, use the PLT stub as
3839 target address to decide whether a long
3840 branch stub is needed.
3841 For absolute code, they cannot be handled. */
3842 struct elf32_arm_link_hash_table
*globals
=
3843 elf32_arm_hash_table (info
);
3845 if (globals
->splt
!= NULL
&& hash
!= NULL
3846 && hash
->root
.plt
.offset
!= (bfd_vma
) -1)
3848 sym_sec
= globals
->splt
;
3849 sym_value
= hash
->root
.plt
.offset
;
3850 if (sym_sec
->output_section
!= NULL
)
3851 destination
= (sym_value
3852 + sym_sec
->output_offset
3853 + sym_sec
->output_section
->vma
);
3860 bfd_set_error (bfd_error_bad_value
);
3861 goto error_ret_free_internal
;
3863 st_type
= ELF_ST_TYPE (hash
->root
.type
);
3864 sym_name
= hash
->root
.root
.root
.string
;
3867 /* Determine what (if any) linker stub is needed. */
3868 stub_type
= arm_type_of_stub (info
, section
, irela
, st_type
,
3869 hash
, destination
, sym_sec
,
3870 input_bfd
, sym_name
);
3871 if (stub_type
== arm_stub_none
)
3874 /* Support for grouping stub sections. */
3875 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
3877 /* Get the name of this stub. */
3878 stub_name
= elf32_arm_stub_name (id_sec
, sym_sec
, hash
, irela
);
3880 goto error_ret_free_internal
;
3882 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
,
3885 if (stub_entry
!= NULL
)
3887 /* The proper stub has already been created. */
3892 stub_entry
= elf32_arm_add_stub (stub_name
, section
, htab
);
3893 if (stub_entry
== NULL
)
3896 goto error_ret_free_internal
;
3899 stub_entry
->target_value
= sym_value
;
3900 stub_entry
->target_section
= sym_sec
;
3901 stub_entry
->stub_type
= stub_type
;
3902 stub_entry
->h
= hash
;
3903 stub_entry
->st_type
= st_type
;
3905 if (sym_name
== NULL
)
3906 sym_name
= "unnamed";
3907 stub_entry
->output_name
3908 = bfd_alloc (htab
->stub_bfd
,
3909 sizeof (THUMB2ARM_GLUE_ENTRY_NAME
)
3910 + strlen (sym_name
));
3911 if (stub_entry
->output_name
== NULL
)
3914 goto error_ret_free_internal
;
3917 /* For historical reasons, use the existing names for
3918 ARM-to-Thumb and Thumb-to-ARM stubs. */
3919 if (r_type
== (unsigned int) R_ARM_THM_CALL
3920 && st_type
!= STT_ARM_TFUNC
)
3921 sprintf (stub_entry
->output_name
, THUMB2ARM_GLUE_ENTRY_NAME
,
3923 else if (r_type
== (unsigned int) R_ARM_CALL
3924 && st_type
== STT_ARM_TFUNC
)
3925 sprintf (stub_entry
->output_name
, ARM2THUMB_GLUE_ENTRY_NAME
,
3928 sprintf (stub_entry
->output_name
, STUB_ENTRY_NAME
,
3931 stub_changed
= TRUE
;
3934 /* We're done with the internal relocs, free them. */
3935 if (elf_section_data (section
)->relocs
== NULL
)
3936 free (internal_relocs
);
3943 /* OK, we've added some stubs. Find out the new size of the
3945 for (stub_sec
= htab
->stub_bfd
->sections
;
3947 stub_sec
= stub_sec
->next
)
3950 bfd_hash_traverse (&htab
->stub_hash_table
, arm_size_one_stub
, htab
);
3952 /* Ask the linker to do its stuff. */
3953 (*htab
->layout_sections_again
) ();
3954 stub_changed
= FALSE
;
3959 error_ret_free_local
:
3963 /* Build all the stubs associated with the current output file. The
3964 stubs are kept in a hash table attached to the main linker hash
3965 table. We also set up the .plt entries for statically linked PIC
3966 functions here. This function is called via arm_elf_finish in the
3970 elf32_arm_build_stubs (struct bfd_link_info
*info
)
3973 struct bfd_hash_table
*table
;
3974 struct elf32_arm_link_hash_table
*htab
;
3976 htab
= elf32_arm_hash_table (info
);
3978 for (stub_sec
= htab
->stub_bfd
->sections
;
3980 stub_sec
= stub_sec
->next
)
3984 /* Ignore non-stub sections. */
3985 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
3988 /* Allocate memory to hold the linker stubs. */
3989 size
= stub_sec
->size
;
3990 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
3991 if (stub_sec
->contents
== NULL
&& size
!= 0)
3996 /* Build the stubs as directed by the stub hash table. */
3997 table
= &htab
->stub_hash_table
;
3998 bfd_hash_traverse (table
, arm_build_one_stub
, info
);
4003 /* Locate the Thumb encoded calling stub for NAME. */
4005 static struct elf_link_hash_entry
*
4006 find_thumb_glue (struct bfd_link_info
*link_info
,
4008 char **error_message
)
4011 struct elf_link_hash_entry
*hash
;
4012 struct elf32_arm_link_hash_table
*hash_table
;
4014 /* We need a pointer to the armelf specific hash table. */
4015 hash_table
= elf32_arm_hash_table (link_info
);
4017 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
4018 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
4020 BFD_ASSERT (tmp_name
);
4022 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
4024 hash
= elf_link_hash_lookup
4025 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
4028 && asprintf (error_message
, _("unable to find THUMB glue '%s' for '%s'"),
4029 tmp_name
, name
) == -1)
4030 *error_message
= (char *) bfd_errmsg (bfd_error_system_call
);
4037 /* Locate the ARM encoded calling stub for NAME. */
4039 static struct elf_link_hash_entry
*
4040 find_arm_glue (struct bfd_link_info
*link_info
,
4042 char **error_message
)
4045 struct elf_link_hash_entry
*myh
;
4046 struct elf32_arm_link_hash_table
*hash_table
;
4048 /* We need a pointer to the elfarm specific hash table. */
4049 hash_table
= elf32_arm_hash_table (link_info
);
4051 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
4052 + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
4054 BFD_ASSERT (tmp_name
);
4056 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
4058 myh
= elf_link_hash_lookup
4059 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
4062 && asprintf (error_message
, _("unable to find ARM glue '%s' for '%s'"),
4063 tmp_name
, name
) == -1)
4064 *error_message
= (char *) bfd_errmsg (bfd_error_system_call
);
4071 /* ARM->Thumb glue (static images):
4075 ldr r12, __func_addr
4078 .word func @ behave as if you saw a ARM_32 reloc.
4085 .word func @ behave as if you saw a ARM_32 reloc.
4087 (relocatable images)
4090 ldr r12, __func_offset
4096 #define ARM2THUMB_STATIC_GLUE_SIZE 12
4097 static const insn32 a2t1_ldr_insn
= 0xe59fc000;
4098 static const insn32 a2t2_bx_r12_insn
= 0xe12fff1c;
4099 static const insn32 a2t3_func_addr_insn
= 0x00000001;
4101 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
4102 static const insn32 a2t1v5_ldr_insn
= 0xe51ff004;
4103 static const insn32 a2t2v5_func_addr_insn
= 0x00000001;
4105 #define ARM2THUMB_PIC_GLUE_SIZE 16
4106 static const insn32 a2t1p_ldr_insn
= 0xe59fc004;
4107 static const insn32 a2t2p_add_pc_insn
= 0xe08cc00f;
4108 static const insn32 a2t3p_bx_r12_insn
= 0xe12fff1c;
4110 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
4114 __func_from_thumb: __func_from_thumb:
4116 nop ldr r6, __func_addr
4126 #define THUMB2ARM_GLUE_SIZE 8
4127 static const insn16 t2a1_bx_pc_insn
= 0x4778;
4128 static const insn16 t2a2_noop_insn
= 0x46c0;
4129 static const insn32 t2a3_b_insn
= 0xea000000;
4131 #define VFP11_ERRATUM_VENEER_SIZE 8
4133 #define ARM_BX_VENEER_SIZE 12
4134 static const insn32 armbx1_tst_insn
= 0xe3100001;
4135 static const insn32 armbx2_moveq_insn
= 0x01a0f000;
4136 static const insn32 armbx3_bx_insn
= 0xe12fff10;
4138 #ifndef ELFARM_NABI_C_INCLUDED
4140 arm_allocate_glue_section_space (bfd
* abfd
, bfd_size_type size
, const char * name
)
4143 bfd_byte
* contents
;
4148 BFD_ASSERT (abfd
!= NULL
);
4150 s
= bfd_get_section_by_name (abfd
, name
);
4151 BFD_ASSERT (s
!= NULL
);
4153 contents
= bfd_alloc (abfd
, size
);
4155 BFD_ASSERT (s
->size
== size
);
4156 s
->contents
= contents
;
4160 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info
* info
)
4162 struct elf32_arm_link_hash_table
* globals
;
4164 globals
= elf32_arm_hash_table (info
);
4165 BFD_ASSERT (globals
!= NULL
);
4167 arm_allocate_glue_section_space (globals
->bfd_of_glue_owner
,
4168 globals
->arm_glue_size
,
4169 ARM2THUMB_GLUE_SECTION_NAME
);
4171 arm_allocate_glue_section_space (globals
->bfd_of_glue_owner
,
4172 globals
->thumb_glue_size
,
4173 THUMB2ARM_GLUE_SECTION_NAME
);
4175 arm_allocate_glue_section_space (globals
->bfd_of_glue_owner
,
4176 globals
->vfp11_erratum_glue_size
,
4177 VFP11_ERRATUM_VENEER_SECTION_NAME
);
4179 arm_allocate_glue_section_space (globals
->bfd_of_glue_owner
,
4180 globals
->bx_glue_size
,
4181 ARM_BX_GLUE_SECTION_NAME
);
4186 /* Allocate space and symbols for calling a Thumb function from Arm mode.
4187 returns the symbol identifying the stub. */
4189 static struct elf_link_hash_entry
*
4190 record_arm_to_thumb_glue (struct bfd_link_info
* link_info
,
4191 struct elf_link_hash_entry
* h
)
4193 const char * name
= h
->root
.root
.string
;
4196 struct elf_link_hash_entry
* myh
;
4197 struct bfd_link_hash_entry
* bh
;
4198 struct elf32_arm_link_hash_table
* globals
;
4202 globals
= elf32_arm_hash_table (link_info
);
4204 BFD_ASSERT (globals
!= NULL
);
4205 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4207 s
= bfd_get_section_by_name
4208 (globals
->bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
4210 BFD_ASSERT (s
!= NULL
);
4212 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
4214 BFD_ASSERT (tmp_name
);
4216 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
4218 myh
= elf_link_hash_lookup
4219 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
4223 /* We've already seen this guy. */
4228 /* The only trick here is using hash_table->arm_glue_size as the value.
4229 Even though the section isn't allocated yet, this is where we will be
4230 putting it. The +1 on the value marks that the stub has not been
4231 output yet - not that it is a Thumb function. */
4233 val
= globals
->arm_glue_size
+ 1;
4234 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
4235 tmp_name
, BSF_GLOBAL
, s
, val
,
4236 NULL
, TRUE
, FALSE
, &bh
);
4238 myh
= (struct elf_link_hash_entry
*) bh
;
4239 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4240 myh
->forced_local
= 1;
4244 if (link_info
->shared
|| globals
->root
.is_relocatable_executable
4245 || globals
->pic_veneer
)
4246 size
= ARM2THUMB_PIC_GLUE_SIZE
;
4247 else if (globals
->use_blx
)
4248 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
4250 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
4253 globals
->arm_glue_size
+= size
;
4259 record_thumb_to_arm_glue (struct bfd_link_info
*link_info
,
4260 struct elf_link_hash_entry
*h
)
4262 const char *name
= h
->root
.root
.string
;
4265 struct elf_link_hash_entry
*myh
;
4266 struct bfd_link_hash_entry
*bh
;
4267 struct elf32_arm_link_hash_table
*hash_table
;
4270 hash_table
= elf32_arm_hash_table (link_info
);
4272 BFD_ASSERT (hash_table
!= NULL
);
4273 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
4275 s
= bfd_get_section_by_name
4276 (hash_table
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
4278 BFD_ASSERT (s
!= NULL
);
4280 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
4281 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
4283 BFD_ASSERT (tmp_name
);
4285 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
4287 myh
= elf_link_hash_lookup
4288 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
4292 /* We've already seen this guy. */
4297 /* The only trick here is using hash_table->thumb_glue_size as the value.
4298 Even though the section isn't allocated yet, this is where we will be
4299 putting it. The +1 on the value marks that the stub has not been
4300 output yet - not that it is a Thumb function. */
4302 val
= hash_table
->thumb_glue_size
+ 1;
4303 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4304 tmp_name
, BSF_GLOBAL
, s
, val
,
4305 NULL
, TRUE
, FALSE
, &bh
);
4307 /* If we mark it 'Thumb', the disassembler will do a better job. */
4308 myh
= (struct elf_link_hash_entry
*) bh
;
4309 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
4310 myh
->forced_local
= 1;
4314 #define CHANGE_TO_ARM "__%s_change_to_arm"
4315 #define BACK_FROM_ARM "__%s_back_from_arm"
4317 /* Allocate another symbol to mark where we switch to Arm mode. */
4318 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
4319 + strlen (CHANGE_TO_ARM
) + 1);
4321 BFD_ASSERT (tmp_name
);
4323 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
4326 val
= hash_table
->thumb_glue_size
+ 4,
4327 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4328 tmp_name
, BSF_LOCAL
, s
, val
,
4329 NULL
, TRUE
, FALSE
, &bh
);
4333 s
->size
+= THUMB2ARM_GLUE_SIZE
;
4334 hash_table
->thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
4338 /* Allocate space for ARMv4 BX veneers. */
4341 record_arm_bx_glue (struct bfd_link_info
* link_info
, int reg
)
4344 struct elf32_arm_link_hash_table
*globals
;
4346 struct elf_link_hash_entry
*myh
;
4347 struct bfd_link_hash_entry
*bh
;
4350 /* BX PC does not need a veneer. */
4354 globals
= elf32_arm_hash_table (link_info
);
4356 BFD_ASSERT (globals
!= NULL
);
4357 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4359 /* Check if this veneer has already been allocated. */
4360 if (globals
->bx_glue_offset
[reg
])
4363 s
= bfd_get_section_by_name
4364 (globals
->bfd_of_glue_owner
, ARM_BX_GLUE_SECTION_NAME
);
4366 BFD_ASSERT (s
!= NULL
);
4368 /* Add symbol for veneer. */
4369 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (ARM_BX_GLUE_ENTRY_NAME
) + 1);
4371 BFD_ASSERT (tmp_name
);
4373 sprintf (tmp_name
, ARM_BX_GLUE_ENTRY_NAME
, reg
);
4375 myh
= elf_link_hash_lookup
4376 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4378 BFD_ASSERT (myh
== NULL
);
4381 val
= globals
->bx_glue_size
;
4382 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
4383 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
4384 NULL
, TRUE
, FALSE
, &bh
);
4386 myh
= (struct elf_link_hash_entry
*) bh
;
4387 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4388 myh
->forced_local
= 1;
4390 s
->size
+= ARM_BX_VENEER_SIZE
;
4391 globals
->bx_glue_offset
[reg
] = globals
->bx_glue_size
| 2;
4392 globals
->bx_glue_size
+= ARM_BX_VENEER_SIZE
;
4396 /* Add an entry to the code/data map for section SEC. */
4399 elf32_arm_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
4401 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
4402 unsigned int newidx
;
4404 if (sec_data
->map
== NULL
)
4406 sec_data
->map
= bfd_malloc (sizeof (elf32_arm_section_map
));
4407 sec_data
->mapcount
= 0;
4408 sec_data
->mapsize
= 1;
4411 newidx
= sec_data
->mapcount
++;
4413 if (sec_data
->mapcount
> sec_data
->mapsize
)
4415 sec_data
->mapsize
*= 2;
4416 sec_data
->map
= bfd_realloc_or_free (sec_data
->map
, sec_data
->mapsize
4417 * sizeof (elf32_arm_section_map
));
4422 sec_data
->map
[newidx
].vma
= vma
;
4423 sec_data
->map
[newidx
].type
= type
;
4428 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
4429 veneers are handled for now. */
4432 record_vfp11_erratum_veneer (struct bfd_link_info
*link_info
,
4433 elf32_vfp11_erratum_list
*branch
,
4435 asection
*branch_sec
,
4436 unsigned int offset
)
4439 struct elf32_arm_link_hash_table
*hash_table
;
4441 struct elf_link_hash_entry
*myh
;
4442 struct bfd_link_hash_entry
*bh
;
4444 struct _arm_elf_section_data
*sec_data
;
4446 elf32_vfp11_erratum_list
*newerr
;
4448 hash_table
= elf32_arm_hash_table (link_info
);
4450 BFD_ASSERT (hash_table
!= NULL
);
4451 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
4453 s
= bfd_get_section_by_name
4454 (hash_table
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
4456 sec_data
= elf32_arm_section_data (s
);
4458 BFD_ASSERT (s
!= NULL
);
4460 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
4461 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
4463 BFD_ASSERT (tmp_name
);
4465 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
4466 hash_table
->num_vfp11_fixes
);
4468 myh
= elf_link_hash_lookup
4469 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4471 BFD_ASSERT (myh
== NULL
);
4474 val
= hash_table
->vfp11_erratum_glue_size
;
4475 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4476 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
4477 NULL
, TRUE
, FALSE
, &bh
);
4479 myh
= (struct elf_link_hash_entry
*) bh
;
4480 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4481 myh
->forced_local
= 1;
4483 /* Link veneer back to calling location. */
4484 errcount
= ++(sec_data
->erratumcount
);
4485 newerr
= bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
4487 newerr
->type
= VFP11_ERRATUM_ARM_VENEER
;
4489 newerr
->u
.v
.branch
= branch
;
4490 newerr
->u
.v
.id
= hash_table
->num_vfp11_fixes
;
4491 branch
->u
.b
.veneer
= newerr
;
4493 newerr
->next
= sec_data
->erratumlist
;
4494 sec_data
->erratumlist
= newerr
;
4496 /* A symbol for the return from the veneer. */
4497 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
4498 hash_table
->num_vfp11_fixes
);
4500 myh
= elf_link_hash_lookup
4501 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4508 _bfd_generic_link_add_one_symbol (link_info
, branch_bfd
, tmp_name
, BSF_LOCAL
,
4509 branch_sec
, val
, NULL
, TRUE
, FALSE
, &bh
);
4511 myh
= (struct elf_link_hash_entry
*) bh
;
4512 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4513 myh
->forced_local
= 1;
4517 /* Generate a mapping symbol for the veneer section, and explicitly add an
4518 entry for that symbol to the code/data map for the section. */
4519 if (hash_table
->vfp11_erratum_glue_size
== 0)
4522 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
4523 ever requires this erratum fix. */
4524 _bfd_generic_link_add_one_symbol (link_info
,
4525 hash_table
->bfd_of_glue_owner
, "$a",
4526 BSF_LOCAL
, s
, 0, NULL
,
4529 myh
= (struct elf_link_hash_entry
*) bh
;
4530 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
4531 myh
->forced_local
= 1;
4533 /* The elf32_arm_init_maps function only cares about symbols from input
4534 BFDs. We must make a note of this generated mapping symbol
4535 ourselves so that code byteswapping works properly in
4536 elf32_arm_write_section. */
4537 elf32_arm_section_map_add (s
, 'a', 0);
4540 s
->size
+= VFP11_ERRATUM_VENEER_SIZE
;
4541 hash_table
->vfp11_erratum_glue_size
+= VFP11_ERRATUM_VENEER_SIZE
;
4542 hash_table
->num_vfp11_fixes
++;
4544 /* The offset of the veneer. */
4548 /* Note: we do not include the flag SEC_LINKER_CREATED, as that
4549 would prevent elf_link_input_bfd() from processing the contents
4551 #define ARM_GLUE_SECTION_FLAGS \
4552 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY)
4554 /* Create a fake section for use by the ARM backend of the linker. */
4557 arm_make_glue_section (bfd
* abfd
, const char * name
)
4561 sec
= bfd_get_section_by_name (abfd
, name
);
4566 sec
= bfd_make_section_with_flags (abfd
, name
, ARM_GLUE_SECTION_FLAGS
);
4569 || !bfd_set_section_alignment (abfd
, sec
, 2))
4572 /* Set the gc mark to prevent the section from being removed by garbage
4573 collection, despite the fact that no relocs refer to this section. */
4579 /* Add the glue sections to ABFD. This function is called from the
4580 linker scripts in ld/emultempl/{armelf}.em. */
4583 bfd_elf32_arm_add_glue_sections_to_bfd (bfd
*abfd
,
4584 struct bfd_link_info
*info
)
4586 /* If we are only performing a partial
4587 link do not bother adding the glue. */
4588 if (info
->relocatable
)
4591 /* Linker stubs don't need glue. */
4592 if (!strcmp (abfd
->filename
, "linker stubs"))
4595 return arm_make_glue_section (abfd
, ARM2THUMB_GLUE_SECTION_NAME
)
4596 && arm_make_glue_section (abfd
, THUMB2ARM_GLUE_SECTION_NAME
)
4597 && arm_make_glue_section (abfd
, VFP11_ERRATUM_VENEER_SECTION_NAME
)
4598 && arm_make_glue_section (abfd
, ARM_BX_GLUE_SECTION_NAME
);
4601 /* Select a BFD to be used to hold the sections used by the glue code.
4602 This function is called from the linker scripts in ld/emultempl/
4606 bfd_elf32_arm_get_bfd_for_interworking (bfd
*abfd
, struct bfd_link_info
*info
)
4608 struct elf32_arm_link_hash_table
*globals
;
4610 /* If we are only performing a partial link
4611 do not bother getting a bfd to hold the glue. */
4612 if (info
->relocatable
)
4615 /* Make sure we don't attach the glue sections to a dynamic object. */
4616 BFD_ASSERT (!(abfd
->flags
& DYNAMIC
));
4618 globals
= elf32_arm_hash_table (info
);
4620 BFD_ASSERT (globals
!= NULL
);
4622 if (globals
->bfd_of_glue_owner
!= NULL
)
4625 /* Save the bfd for later use. */
4626 globals
->bfd_of_glue_owner
= abfd
;
4632 check_use_blx (struct elf32_arm_link_hash_table
*globals
)
4634 if (bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
4636 globals
->use_blx
= 1;
4640 bfd_elf32_arm_process_before_allocation (bfd
*abfd
,
4641 struct bfd_link_info
*link_info
)
4643 Elf_Internal_Shdr
*symtab_hdr
;
4644 Elf_Internal_Rela
*internal_relocs
= NULL
;
4645 Elf_Internal_Rela
*irel
, *irelend
;
4646 bfd_byte
*contents
= NULL
;
4649 struct elf32_arm_link_hash_table
*globals
;
4651 /* If we are only performing a partial link do not bother
4652 to construct any glue. */
4653 if (link_info
->relocatable
)
4656 /* Here we have a bfd that is to be included on the link. We have a
4657 hook to do reloc rummaging, before section sizes are nailed down. */
4658 globals
= elf32_arm_hash_table (link_info
);
4660 BFD_ASSERT (globals
!= NULL
);
4662 check_use_blx (globals
);
4664 if (globals
->byteswap_code
&& !bfd_big_endian (abfd
))
4666 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
4671 /* PR 5398: If we have not decided to include any loadable sections in
4672 the output then we will not have a glue owner bfd. This is OK, it
4673 just means that there is nothing else for us to do here. */
4674 if (globals
->bfd_of_glue_owner
== NULL
)
4677 /* Rummage around all the relocs and map the glue vectors. */
4678 sec
= abfd
->sections
;
4683 for (; sec
!= NULL
; sec
= sec
->next
)
4685 if (sec
->reloc_count
== 0)
4688 if ((sec
->flags
& SEC_EXCLUDE
) != 0)
4691 symtab_hdr
= & elf_symtab_hdr (abfd
);
4693 /* Load the relocs. */
4695 = _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
, FALSE
);
4697 if (internal_relocs
== NULL
)
4700 irelend
= internal_relocs
+ sec
->reloc_count
;
4701 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
4704 unsigned long r_index
;
4706 struct elf_link_hash_entry
*h
;
4708 r_type
= ELF32_R_TYPE (irel
->r_info
);
4709 r_index
= ELF32_R_SYM (irel
->r_info
);
4711 /* These are the only relocation types we care about. */
4712 if ( r_type
!= R_ARM_PC24
4713 && r_type
!= R_ARM_PLT32
4714 && r_type
!= R_ARM_JUMP24
4715 && r_type
!= R_ARM_THM_JUMP24
4716 && (r_type
!= R_ARM_V4BX
|| globals
->fix_v4bx
< 2))
4719 /* Get the section contents if we haven't done so already. */
4720 if (contents
== NULL
)
4722 /* Get cached copy if it exists. */
4723 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
4724 contents
= elf_section_data (sec
)->this_hdr
.contents
;
4727 /* Go get them off disk. */
4728 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
4733 if (r_type
== R_ARM_V4BX
)
4737 reg
= bfd_get_32 (abfd
, contents
+ irel
->r_offset
) & 0xf;
4738 record_arm_bx_glue (link_info
, reg
);
4742 /* If the relocation is not against a symbol it cannot concern us. */
4745 /* We don't care about local symbols. */
4746 if (r_index
< symtab_hdr
->sh_info
)
4749 /* This is an external symbol. */
4750 r_index
-= symtab_hdr
->sh_info
;
4751 h
= (struct elf_link_hash_entry
*)
4752 elf_sym_hashes (abfd
)[r_index
];
4754 /* If the relocation is against a static symbol it must be within
4755 the current section and so cannot be a cross ARM/Thumb relocation. */
4759 /* If the call will go through a PLT entry then we do not need
4761 if (globals
->splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
4769 /* This one is a call from arm code. We need to look up
4770 the target of the call. If it is a thumb target, we
4772 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
4773 record_arm_to_thumb_glue (link_info
, h
);
4776 case R_ARM_THM_JUMP24
:
4777 /* This one is a call from thumb code. We look
4778 up the target of the call. If it is not a thumb
4779 target, we insert glue. */
4780 if (ELF_ST_TYPE (h
->type
) != STT_ARM_TFUNC
4781 && !(globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
4782 && h
->root
.type
!= bfd_link_hash_undefweak
)
4783 record_thumb_to_arm_glue (link_info
, h
);
4791 if (contents
!= NULL
4792 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
4796 if (internal_relocs
!= NULL
4797 && elf_section_data (sec
)->relocs
!= internal_relocs
)
4798 free (internal_relocs
);
4799 internal_relocs
= NULL
;
4805 if (contents
!= NULL
4806 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
4808 if (internal_relocs
!= NULL
4809 && elf_section_data (sec
)->relocs
!= internal_relocs
)
4810 free (internal_relocs
);
4817 /* Initialise maps of ARM/Thumb/data for input BFDs. */
4820 bfd_elf32_arm_init_maps (bfd
*abfd
)
4822 Elf_Internal_Sym
*isymbuf
;
4823 Elf_Internal_Shdr
*hdr
;
4824 unsigned int i
, localsyms
;
4826 /* PR 7093: Make sure that we are dealing with an arm elf binary. */
4827 if (! is_arm_elf (abfd
))
4830 if ((abfd
->flags
& DYNAMIC
) != 0)
4833 hdr
= & elf_symtab_hdr (abfd
);
4834 localsyms
= hdr
->sh_info
;
4836 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4837 should contain the number of local symbols, which should come before any
4838 global symbols. Mapping symbols are always local. */
4839 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
,
4842 /* No internal symbols read? Skip this BFD. */
4843 if (isymbuf
== NULL
)
4846 for (i
= 0; i
< localsyms
; i
++)
4848 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
4849 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4853 && ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
4855 name
= bfd_elf_string_from_elf_section (abfd
,
4856 hdr
->sh_link
, isym
->st_name
);
4858 if (bfd_is_arm_special_symbol_name (name
,
4859 BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
4860 elf32_arm_section_map_add (sec
, name
[1], isym
->st_value
);
4867 bfd_elf32_arm_set_vfp11_fix (bfd
*obfd
, struct bfd_link_info
*link_info
)
4869 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
4870 obj_attribute
*out_attr
= elf_known_obj_attributes_proc (obfd
);
4872 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
4873 if (out_attr
[Tag_CPU_arch
].i
>= TAG_CPU_ARCH_V7
)
4875 switch (globals
->vfp11_fix
)
4877 case BFD_ARM_VFP11_FIX_DEFAULT
:
4878 case BFD_ARM_VFP11_FIX_NONE
:
4879 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
4883 /* Give a warning, but do as the user requests anyway. */
4884 (*_bfd_error_handler
) (_("%B: warning: selected VFP11 erratum "
4885 "workaround is not necessary for target architecture"), obfd
);
4888 else if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_DEFAULT
)
4889 /* For earlier architectures, we might need the workaround, but do not
4890 enable it by default. If users is running with broken hardware, they
4891 must enable the erratum fix explicitly. */
4892 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
4896 enum bfd_arm_vfp11_pipe
4904 /* Return a VFP register number. This is encoded as RX:X for single-precision
4905 registers, or X:RX for double-precision registers, where RX is the group of
4906 four bits in the instruction encoding and X is the single extension bit.
4907 RX and X fields are specified using their lowest (starting) bit. The return
4910 0...31: single-precision registers s0...s31
4911 32...63: double-precision registers d0...d31.
4913 Although X should be zero for VFP11 (encoding d0...d15 only), we might
4914 encounter VFP3 instructions, so we allow the full range for DP registers. */
4917 bfd_arm_vfp11_regno (unsigned int insn
, bfd_boolean is_double
, unsigned int rx
,
4921 return (((insn
>> rx
) & 0xf) | (((insn
>> x
) & 1) << 4)) + 32;
4923 return (((insn
>> rx
) & 0xf) << 1) | ((insn
>> x
) & 1);
4926 /* Set bits in *WMASK according to a register number REG as encoded by
4927 bfd_arm_vfp11_regno(). Ignore d16-d31. */
4930 bfd_arm_vfp11_write_mask (unsigned int *wmask
, unsigned int reg
)
4935 *wmask
|= 3 << ((reg
- 32) * 2);
4938 /* Return TRUE if WMASK overwrites anything in REGS. */
4941 bfd_arm_vfp11_antidependency (unsigned int wmask
, int *regs
, int numregs
)
4945 for (i
= 0; i
< numregs
; i
++)
4947 unsigned int reg
= regs
[i
];
4949 if (reg
< 32 && (wmask
& (1 << reg
)) != 0)
4957 if ((wmask
& (3 << (reg
* 2))) != 0)
4964 /* In this function, we're interested in two things: finding input registers
4965 for VFP data-processing instructions, and finding the set of registers which
4966 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
4967 hold the written set, so FLDM etc. are easy to deal with (we're only
4968 interested in 32 SP registers or 16 dp registers, due to the VFP version
4969 implemented by the chip in question). DP registers are marked by setting
4970 both SP registers in the write mask). */
4972 static enum bfd_arm_vfp11_pipe
4973 bfd_arm_vfp11_insn_decode (unsigned int insn
, unsigned int *destmask
, int *regs
,
4976 enum bfd_arm_vfp11_pipe pipe
= VFP11_BAD
;
4977 bfd_boolean is_double
= ((insn
& 0xf00) == 0xb00) ? 1 : 0;
4979 if ((insn
& 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
4982 unsigned int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
4983 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
4985 pqrs
= ((insn
& 0x00800000) >> 20)
4986 | ((insn
& 0x00300000) >> 19)
4987 | ((insn
& 0x00000040) >> 6);
4991 case 0: /* fmac[sd]. */
4992 case 1: /* fnmac[sd]. */
4993 case 2: /* fmsc[sd]. */
4994 case 3: /* fnmsc[sd]. */
4996 bfd_arm_vfp11_write_mask (destmask
, fd
);
4998 regs
[1] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
5003 case 4: /* fmul[sd]. */
5004 case 5: /* fnmul[sd]. */
5005 case 6: /* fadd[sd]. */
5006 case 7: /* fsub[sd]. */
5010 case 8: /* fdiv[sd]. */
5013 bfd_arm_vfp11_write_mask (destmask
, fd
);
5014 regs
[0] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
5019 case 15: /* extended opcode. */
5021 unsigned int extn
= ((insn
>> 15) & 0x1e)
5022 | ((insn
>> 7) & 1);
5026 case 0: /* fcpy[sd]. */
5027 case 1: /* fabs[sd]. */
5028 case 2: /* fneg[sd]. */
5029 case 8: /* fcmp[sd]. */
5030 case 9: /* fcmpe[sd]. */
5031 case 10: /* fcmpz[sd]. */
5032 case 11: /* fcmpez[sd]. */
5033 case 16: /* fuito[sd]. */
5034 case 17: /* fsito[sd]. */
5035 case 24: /* ftoui[sd]. */
5036 case 25: /* ftouiz[sd]. */
5037 case 26: /* ftosi[sd]. */
5038 case 27: /* ftosiz[sd]. */
5039 /* These instructions will not bounce due to underflow. */
5044 case 3: /* fsqrt[sd]. */
5045 /* fsqrt cannot underflow, but it can (perhaps) overwrite
5046 registers to cause the erratum in previous instructions. */
5047 bfd_arm_vfp11_write_mask (destmask
, fd
);
5051 case 15: /* fcvt{ds,sd}. */
5055 bfd_arm_vfp11_write_mask (destmask
, fd
);
5057 /* Only FCVTSD can underflow. */
5058 if ((insn
& 0x100) != 0)
5077 /* Two-register transfer. */
5078 else if ((insn
& 0x0fe00ed0) == 0x0c400a10)
5080 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
5082 if ((insn
& 0x100000) == 0)
5085 bfd_arm_vfp11_write_mask (destmask
, fm
);
5088 bfd_arm_vfp11_write_mask (destmask
, fm
);
5089 bfd_arm_vfp11_write_mask (destmask
, fm
+ 1);
5095 else if ((insn
& 0x0e100e00) == 0x0c100a00) /* A load insn. */
5097 int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
5098 unsigned int puw
= ((insn
>> 21) & 0x1) | (((insn
>> 23) & 3) << 1);
5102 case 0: /* Two-reg transfer. We should catch these above. */
5105 case 2: /* fldm[sdx]. */
5109 unsigned int i
, offset
= insn
& 0xff;
5114 for (i
= fd
; i
< fd
+ offset
; i
++)
5115 bfd_arm_vfp11_write_mask (destmask
, i
);
5119 case 4: /* fld[sd]. */
5121 bfd_arm_vfp11_write_mask (destmask
, fd
);
5130 /* Single-register transfer. Note L==0. */
5131 else if ((insn
& 0x0f100e10) == 0x0e000a10)
5133 unsigned int opcode
= (insn
>> 21) & 7;
5134 unsigned int fn
= bfd_arm_vfp11_regno (insn
, is_double
, 16, 7);
5138 case 0: /* fmsr/fmdlr. */
5139 case 1: /* fmdhr. */
5140 /* Mark fmdhr and fmdlr as writing to the whole of the DP
5141 destination register. I don't know if this is exactly right,
5142 but it is the conservative choice. */
5143 bfd_arm_vfp11_write_mask (destmask
, fn
);
5157 static int elf32_arm_compare_mapping (const void * a
, const void * b
);
5160 /* Look for potentially-troublesome code sequences which might trigger the
5161 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
5162 (available from ARM) for details of the erratum. A short version is
5163 described in ld.texinfo. */
5166 bfd_elf32_arm_vfp11_erratum_scan (bfd
*abfd
, struct bfd_link_info
*link_info
)
5169 bfd_byte
*contents
= NULL
;
5171 int regs
[3], numregs
= 0;
5172 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
5173 int use_vector
= (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_VECTOR
);
5175 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
5176 The states transition as follows:
5178 0 -> 1 (vector) or 0 -> 2 (scalar)
5179 A VFP FMAC-pipeline instruction has been seen. Fill
5180 regs[0]..regs[numregs-1] with its input operands. Remember this
5181 instruction in 'first_fmac'.
5184 Any instruction, except for a VFP instruction which overwrites
5189 A VFP instruction has been seen which overwrites any of regs[*].
5190 We must make a veneer! Reset state to 0 before examining next
5194 If we fail to match anything in state 2, reset to state 0 and reset
5195 the instruction pointer to the instruction after 'first_fmac'.
5197 If the VFP11 vector mode is in use, there must be at least two unrelated
5198 instructions between anti-dependent VFP11 instructions to properly avoid
5199 triggering the erratum, hence the use of the extra state 1. */
5201 /* If we are only performing a partial link do not bother
5202 to construct any glue. */
5203 if (link_info
->relocatable
)
5206 /* Skip if this bfd does not correspond to an ELF image. */
5207 if (! is_arm_elf (abfd
))
5210 /* We should have chosen a fix type by the time we get here. */
5211 BFD_ASSERT (globals
->vfp11_fix
!= BFD_ARM_VFP11_FIX_DEFAULT
);
5213 if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_NONE
)
5216 /* Skip this BFD if it corresponds to an executable or dynamic object. */
5217 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) != 0)
5220 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5222 unsigned int i
, span
, first_fmac
= 0, veneer_of_insn
= 0;
5223 struct _arm_elf_section_data
*sec_data
;
5225 /* If we don't have executable progbits, we're not interested in this
5226 section. Also skip if section is to be excluded. */
5227 if (elf_section_type (sec
) != SHT_PROGBITS
5228 || (elf_section_flags (sec
) & SHF_EXECINSTR
) == 0
5229 || (sec
->flags
& SEC_EXCLUDE
) != 0
5230 || sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
5231 || sec
->output_section
== bfd_abs_section_ptr
5232 || strcmp (sec
->name
, VFP11_ERRATUM_VENEER_SECTION_NAME
) == 0)
5235 sec_data
= elf32_arm_section_data (sec
);
5237 if (sec_data
->mapcount
== 0)
5240 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
5241 contents
= elf_section_data (sec
)->this_hdr
.contents
;
5242 else if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
5245 qsort (sec_data
->map
, sec_data
->mapcount
, sizeof (elf32_arm_section_map
),
5246 elf32_arm_compare_mapping
);
5248 for (span
= 0; span
< sec_data
->mapcount
; span
++)
5250 unsigned int span_start
= sec_data
->map
[span
].vma
;
5251 unsigned int span_end
= (span
== sec_data
->mapcount
- 1)
5252 ? sec
->size
: sec_data
->map
[span
+ 1].vma
;
5253 char span_type
= sec_data
->map
[span
].type
;
5255 /* FIXME: Only ARM mode is supported at present. We may need to
5256 support Thumb-2 mode also at some point. */
5257 if (span_type
!= 'a')
5260 for (i
= span_start
; i
< span_end
;)
5262 unsigned int next_i
= i
+ 4;
5263 unsigned int insn
= bfd_big_endian (abfd
)
5264 ? (contents
[i
] << 24)
5265 | (contents
[i
+ 1] << 16)
5266 | (contents
[i
+ 2] << 8)
5268 : (contents
[i
+ 3] << 24)
5269 | (contents
[i
+ 2] << 16)
5270 | (contents
[i
+ 1] << 8)
5272 unsigned int writemask
= 0;
5273 enum bfd_arm_vfp11_pipe pipe
;
5278 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
, regs
,
5280 /* I'm assuming the VFP11 erratum can trigger with denorm
5281 operands on either the FMAC or the DS pipeline. This might
5282 lead to slightly overenthusiastic veneer insertion. */
5283 if (pipe
== VFP11_FMAC
|| pipe
== VFP11_DS
)
5285 state
= use_vector
? 1 : 2;
5287 veneer_of_insn
= insn
;
5293 int other_regs
[3], other_numregs
;
5294 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
5297 if (pipe
!= VFP11_BAD
5298 && bfd_arm_vfp11_antidependency (writemask
, regs
,
5308 int other_regs
[3], other_numregs
;
5309 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
5312 if (pipe
!= VFP11_BAD
5313 && bfd_arm_vfp11_antidependency (writemask
, regs
,
5319 next_i
= first_fmac
+ 4;
5325 abort (); /* Should be unreachable. */
5330 elf32_vfp11_erratum_list
*newerr
5331 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
5334 errcount
= ++(elf32_arm_section_data (sec
)->erratumcount
);
5336 newerr
->u
.b
.vfp_insn
= veneer_of_insn
;
5341 newerr
->type
= VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
;
5348 record_vfp11_erratum_veneer (link_info
, newerr
, abfd
, sec
,
5353 newerr
->next
= sec_data
->erratumlist
;
5354 sec_data
->erratumlist
= newerr
;
5363 if (contents
!= NULL
5364 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
5372 if (contents
!= NULL
5373 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
5379 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
5380 after sections have been laid out, using specially-named symbols. */
5383 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd
*abfd
,
5384 struct bfd_link_info
*link_info
)
5387 struct elf32_arm_link_hash_table
*globals
;
5390 if (link_info
->relocatable
)
5393 /* Skip if this bfd does not correspond to an ELF image. */
5394 if (! is_arm_elf (abfd
))
5397 globals
= elf32_arm_hash_table (link_info
);
5399 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
5400 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
5402 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5404 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
5405 elf32_vfp11_erratum_list
*errnode
= sec_data
->erratumlist
;
5407 for (; errnode
!= NULL
; errnode
= errnode
->next
)
5409 struct elf_link_hash_entry
*myh
;
5412 switch (errnode
->type
)
5414 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
5415 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
:
5416 /* Find veneer symbol. */
5417 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
5418 errnode
->u
.b
.veneer
->u
.v
.id
);
5420 myh
= elf_link_hash_lookup
5421 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
5424 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
5425 "`%s'"), abfd
, tmp_name
);
5427 vma
= myh
->root
.u
.def
.section
->output_section
->vma
5428 + myh
->root
.u
.def
.section
->output_offset
5429 + myh
->root
.u
.def
.value
;
5431 errnode
->u
.b
.veneer
->vma
= vma
;
5434 case VFP11_ERRATUM_ARM_VENEER
:
5435 case VFP11_ERRATUM_THUMB_VENEER
:
5436 /* Find return location. */
5437 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
5440 myh
= elf_link_hash_lookup
5441 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
5444 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
5445 "`%s'"), abfd
, tmp_name
);
5447 vma
= myh
->root
.u
.def
.section
->output_section
->vma
5448 + myh
->root
.u
.def
.section
->output_offset
5449 + myh
->root
.u
.def
.value
;
5451 errnode
->u
.v
.branch
->vma
= vma
;
5464 /* Set target relocation values needed during linking. */
5467 bfd_elf32_arm_set_target_relocs (struct bfd
*output_bfd
,
5468 struct bfd_link_info
*link_info
,
5470 char * target2_type
,
5473 bfd_arm_vfp11_fix vfp11_fix
,
5474 int no_enum_warn
, int no_wchar_warn
,
5477 struct elf32_arm_link_hash_table
*globals
;
5479 globals
= elf32_arm_hash_table (link_info
);
5481 globals
->target1_is_rel
= target1_is_rel
;
5482 if (strcmp (target2_type
, "rel") == 0)
5483 globals
->target2_reloc
= R_ARM_REL32
;
5484 else if (strcmp (target2_type
, "abs") == 0)
5485 globals
->target2_reloc
= R_ARM_ABS32
;
5486 else if (strcmp (target2_type
, "got-rel") == 0)
5487 globals
->target2_reloc
= R_ARM_GOT_PREL
;
5490 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
5493 globals
->fix_v4bx
= fix_v4bx
;
5494 globals
->use_blx
|= use_blx
;
5495 globals
->vfp11_fix
= vfp11_fix
;
5496 globals
->pic_veneer
= pic_veneer
;
5498 BFD_ASSERT (is_arm_elf (output_bfd
));
5499 elf_arm_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
5500 elf_arm_tdata (output_bfd
)->no_wchar_size_warning
= no_wchar_warn
;
5503 /* Replace the target offset of a Thumb bl or b.w instruction. */
5506 insert_thumb_branch (bfd
*abfd
, long int offset
, bfd_byte
*insn
)
5512 BFD_ASSERT ((offset
& 1) == 0);
5514 upper
= bfd_get_16 (abfd
, insn
);
5515 lower
= bfd_get_16 (abfd
, insn
+ 2);
5516 reloc_sign
= (offset
< 0) ? 1 : 0;
5517 upper
= (upper
& ~(bfd_vma
) 0x7ff)
5518 | ((offset
>> 12) & 0x3ff)
5519 | (reloc_sign
<< 10);
5520 lower
= (lower
& ~(bfd_vma
) 0x2fff)
5521 | (((!((offset
>> 23) & 1)) ^ reloc_sign
) << 13)
5522 | (((!((offset
>> 22) & 1)) ^ reloc_sign
) << 11)
5523 | ((offset
>> 1) & 0x7ff);
5524 bfd_put_16 (abfd
, upper
, insn
);
5525 bfd_put_16 (abfd
, lower
, insn
+ 2);
5528 /* Thumb code calling an ARM function. */
5531 elf32_thumb_to_arm_stub (struct bfd_link_info
* info
,
5535 asection
* input_section
,
5536 bfd_byte
* hit_data
,
5539 bfd_signed_vma addend
,
5541 char **error_message
)
5545 long int ret_offset
;
5546 struct elf_link_hash_entry
* myh
;
5547 struct elf32_arm_link_hash_table
* globals
;
5549 myh
= find_thumb_glue (info
, name
, error_message
);
5553 globals
= elf32_arm_hash_table (info
);
5555 BFD_ASSERT (globals
!= NULL
);
5556 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5558 my_offset
= myh
->root
.u
.def
.value
;
5560 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5561 THUMB2ARM_GLUE_SECTION_NAME
);
5563 BFD_ASSERT (s
!= NULL
);
5564 BFD_ASSERT (s
->contents
!= NULL
);
5565 BFD_ASSERT (s
->output_section
!= NULL
);
5567 if ((my_offset
& 0x01) == 0x01)
5570 && sym_sec
->owner
!= NULL
5571 && !INTERWORK_FLAG (sym_sec
->owner
))
5573 (*_bfd_error_handler
)
5574 (_("%B(%s): warning: interworking not enabled.\n"
5575 " first occurrence: %B: thumb call to arm"),
5576 sym_sec
->owner
, input_bfd
, name
);
5582 myh
->root
.u
.def
.value
= my_offset
;
5584 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a1_bx_pc_insn
,
5585 s
->contents
+ my_offset
);
5587 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a2_noop_insn
,
5588 s
->contents
+ my_offset
+ 2);
5591 /* Address of destination of the stub. */
5592 ((bfd_signed_vma
) val
)
5594 /* Offset from the start of the current section
5595 to the start of the stubs. */
5597 /* Offset of the start of this stub from the start of the stubs. */
5599 /* Address of the start of the current section. */
5600 + s
->output_section
->vma
)
5601 /* The branch instruction is 4 bytes into the stub. */
5603 /* ARM branches work from the pc of the instruction + 8. */
5606 put_arm_insn (globals
, output_bfd
,
5607 (bfd_vma
) t2a3_b_insn
| ((ret_offset
>> 2) & 0x00FFFFFF),
5608 s
->contents
+ my_offset
+ 4);
5611 BFD_ASSERT (my_offset
<= globals
->thumb_glue_size
);
5613 /* Now go back and fix up the original BL insn to point to here. */
5615 /* Address of where the stub is located. */
5616 (s
->output_section
->vma
+ s
->output_offset
+ my_offset
)
5617 /* Address of where the BL is located. */
5618 - (input_section
->output_section
->vma
+ input_section
->output_offset
5620 /* Addend in the relocation. */
5622 /* Biassing for PC-relative addressing. */
5625 insert_thumb_branch (input_bfd
, ret_offset
, hit_data
- input_section
->vma
);
5630 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
5632 static struct elf_link_hash_entry
*
5633 elf32_arm_create_thumb_stub (struct bfd_link_info
* info
,
5640 char ** error_message
)
5643 long int ret_offset
;
5644 struct elf_link_hash_entry
* myh
;
5645 struct elf32_arm_link_hash_table
* globals
;
5647 myh
= find_arm_glue (info
, name
, error_message
);
5651 globals
= elf32_arm_hash_table (info
);
5653 BFD_ASSERT (globals
!= NULL
);
5654 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5656 my_offset
= myh
->root
.u
.def
.value
;
5658 if ((my_offset
& 0x01) == 0x01)
5661 && sym_sec
->owner
!= NULL
5662 && !INTERWORK_FLAG (sym_sec
->owner
))
5664 (*_bfd_error_handler
)
5665 (_("%B(%s): warning: interworking not enabled.\n"
5666 " first occurrence: %B: arm call to thumb"),
5667 sym_sec
->owner
, input_bfd
, name
);
5671 myh
->root
.u
.def
.value
= my_offset
;
5673 if (info
->shared
|| globals
->root
.is_relocatable_executable
5674 || globals
->pic_veneer
)
5676 /* For relocatable objects we can't use absolute addresses,
5677 so construct the address from a relative offset. */
5678 /* TODO: If the offset is small it's probably worth
5679 constructing the address with adds. */
5680 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1p_ldr_insn
,
5681 s
->contents
+ my_offset
);
5682 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2p_add_pc_insn
,
5683 s
->contents
+ my_offset
+ 4);
5684 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t3p_bx_r12_insn
,
5685 s
->contents
+ my_offset
+ 8);
5686 /* Adjust the offset by 4 for the position of the add,
5687 and 8 for the pipeline offset. */
5688 ret_offset
= (val
- (s
->output_offset
5689 + s
->output_section
->vma
5692 bfd_put_32 (output_bfd
, ret_offset
,
5693 s
->contents
+ my_offset
+ 12);
5695 else if (globals
->use_blx
)
5697 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1v5_ldr_insn
,
5698 s
->contents
+ my_offset
);
5700 /* It's a thumb address. Add the low order bit. */
5701 bfd_put_32 (output_bfd
, val
| a2t2v5_func_addr_insn
,
5702 s
->contents
+ my_offset
+ 4);
5706 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1_ldr_insn
,
5707 s
->contents
+ my_offset
);
5709 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2_bx_r12_insn
,
5710 s
->contents
+ my_offset
+ 4);
5712 /* It's a thumb address. Add the low order bit. */
5713 bfd_put_32 (output_bfd
, val
| a2t3_func_addr_insn
,
5714 s
->contents
+ my_offset
+ 8);
5720 BFD_ASSERT (my_offset
<= globals
->arm_glue_size
);
5725 /* Arm code calling a Thumb function. */
5728 elf32_arm_to_thumb_stub (struct bfd_link_info
* info
,
5732 asection
* input_section
,
5733 bfd_byte
* hit_data
,
5736 bfd_signed_vma addend
,
5738 char **error_message
)
5740 unsigned long int tmp
;
5743 long int ret_offset
;
5744 struct elf_link_hash_entry
* myh
;
5745 struct elf32_arm_link_hash_table
* globals
;
5747 globals
= elf32_arm_hash_table (info
);
5749 BFD_ASSERT (globals
!= NULL
);
5750 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5752 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5753 ARM2THUMB_GLUE_SECTION_NAME
);
5754 BFD_ASSERT (s
!= NULL
);
5755 BFD_ASSERT (s
->contents
!= NULL
);
5756 BFD_ASSERT (s
->output_section
!= NULL
);
5758 myh
= elf32_arm_create_thumb_stub (info
, name
, input_bfd
, output_bfd
,
5759 sym_sec
, val
, s
, error_message
);
5763 my_offset
= myh
->root
.u
.def
.value
;
5764 tmp
= bfd_get_32 (input_bfd
, hit_data
);
5765 tmp
= tmp
& 0xFF000000;
5767 /* Somehow these are both 4 too far, so subtract 8. */
5768 ret_offset
= (s
->output_offset
5770 + s
->output_section
->vma
5771 - (input_section
->output_offset
5772 + input_section
->output_section
->vma
5776 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
5778 bfd_put_32 (output_bfd
, (bfd_vma
) tmp
, hit_data
- input_section
->vma
);
5783 /* Populate Arm stub for an exported Thumb function. */
5786 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry
*h
, void * inf
)
5788 struct bfd_link_info
* info
= (struct bfd_link_info
*) inf
;
5790 struct elf_link_hash_entry
* myh
;
5791 struct elf32_arm_link_hash_entry
*eh
;
5792 struct elf32_arm_link_hash_table
* globals
;
5795 char *error_message
;
5797 eh
= elf32_arm_hash_entry (h
);
5798 /* Allocate stubs for exported Thumb functions on v4t. */
5799 if (eh
->export_glue
== NULL
)
5802 globals
= elf32_arm_hash_table (info
);
5804 BFD_ASSERT (globals
!= NULL
);
5805 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5807 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5808 ARM2THUMB_GLUE_SECTION_NAME
);
5809 BFD_ASSERT (s
!= NULL
);
5810 BFD_ASSERT (s
->contents
!= NULL
);
5811 BFD_ASSERT (s
->output_section
!= NULL
);
5813 sec
= eh
->export_glue
->root
.u
.def
.section
;
5815 BFD_ASSERT (sec
->output_section
!= NULL
);
5817 val
= eh
->export_glue
->root
.u
.def
.value
+ sec
->output_offset
5818 + sec
->output_section
->vma
;
5820 myh
= elf32_arm_create_thumb_stub (info
, h
->root
.root
.string
,
5821 h
->root
.u
.def
.section
->owner
,
5822 globals
->obfd
, sec
, val
, s
,
5828 /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
5831 elf32_arm_bx_glue (struct bfd_link_info
* info
, int reg
)
5836 struct elf32_arm_link_hash_table
*globals
;
5838 globals
= elf32_arm_hash_table (info
);
5840 BFD_ASSERT (globals
!= NULL
);
5841 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5843 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5844 ARM_BX_GLUE_SECTION_NAME
);
5845 BFD_ASSERT (s
!= NULL
);
5846 BFD_ASSERT (s
->contents
!= NULL
);
5847 BFD_ASSERT (s
->output_section
!= NULL
);
5849 BFD_ASSERT (globals
->bx_glue_offset
[reg
] & 2);
5851 glue_addr
= globals
->bx_glue_offset
[reg
] & ~(bfd_vma
)3;
5853 if ((globals
->bx_glue_offset
[reg
] & 1) == 0)
5855 p
= s
->contents
+ glue_addr
;
5856 bfd_put_32 (globals
->obfd
, armbx1_tst_insn
+ (reg
<< 16), p
);
5857 bfd_put_32 (globals
->obfd
, armbx2_moveq_insn
+ reg
, p
+ 4);
5858 bfd_put_32 (globals
->obfd
, armbx3_bx_insn
+ reg
, p
+ 8);
5859 globals
->bx_glue_offset
[reg
] |= 1;
5862 return glue_addr
+ s
->output_section
->vma
+ s
->output_offset
;
5865 /* Generate Arm stubs for exported Thumb symbols. */
5867 elf32_arm_begin_write_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
5868 struct bfd_link_info
*link_info
)
5870 struct elf32_arm_link_hash_table
* globals
;
5872 if (link_info
== NULL
)
5873 /* Ignore this if we are not called by the ELF backend linker. */
5876 globals
= elf32_arm_hash_table (link_info
);
5877 /* If blx is available then exported Thumb symbols are OK and there is
5879 if (globals
->use_blx
)
5882 elf_link_hash_traverse (&globals
->root
, elf32_arm_to_thumb_export_stub
,
5886 /* Some relocations map to different relocations depending on the
5887 target. Return the real relocation. */
5890 arm_real_reloc_type (struct elf32_arm_link_hash_table
* globals
,
5896 if (globals
->target1_is_rel
)
5902 return globals
->target2_reloc
;
5909 /* Return the base VMA address which should be subtracted from real addresses
5910 when resolving @dtpoff relocation.
5911 This is PT_TLS segment p_vaddr. */
5914 dtpoff_base (struct bfd_link_info
*info
)
5916 /* If tls_sec is NULL, we should have signalled an error already. */
5917 if (elf_hash_table (info
)->tls_sec
== NULL
)
5919 return elf_hash_table (info
)->tls_sec
->vma
;
5922 /* Return the relocation value for @tpoff relocation
5923 if STT_TLS virtual address is ADDRESS. */
5926 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
5928 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5931 /* If tls_sec is NULL, we should have signalled an error already. */
5932 if (htab
->tls_sec
== NULL
)
5934 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
5935 return address
- htab
->tls_sec
->vma
+ base
;
5938 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
5939 VALUE is the relocation value. */
5941 static bfd_reloc_status_type
5942 elf32_arm_abs12_reloc (bfd
*abfd
, void *data
, bfd_vma value
)
5945 return bfd_reloc_overflow
;
5947 value
|= bfd_get_32 (abfd
, data
) & 0xfffff000;
5948 bfd_put_32 (abfd
, value
, data
);
5949 return bfd_reloc_ok
;
5952 /* For a given value of n, calculate the value of G_n as required to
5953 deal with group relocations. We return it in the form of an
5954 encoded constant-and-rotation, together with the final residual. If n is
5955 specified as less than zero, then final_residual is filled with the
5956 input value and no further action is performed. */
5959 calculate_group_reloc_mask (bfd_vma value
, int n
, bfd_vma
*final_residual
)
5963 bfd_vma encoded_g_n
= 0;
5964 bfd_vma residual
= value
; /* Also known as Y_n. */
5966 for (current_n
= 0; current_n
<= n
; current_n
++)
5970 /* Calculate which part of the value to mask. */
5977 /* Determine the most significant bit in the residual and
5978 align the resulting value to a 2-bit boundary. */
5979 for (msb
= 30; msb
>= 0; msb
-= 2)
5980 if (residual
& (3 << msb
))
5983 /* The desired shift is now (msb - 6), or zero, whichever
5990 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
5991 g_n
= residual
& (0xff << shift
);
5992 encoded_g_n
= (g_n
>> shift
)
5993 | ((g_n
<= 0xff ? 0 : (32 - shift
) / 2) << 8);
5995 /* Calculate the residual for the next time around. */
5999 *final_residual
= residual
;
6004 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
6005 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
6008 identify_add_or_sub (bfd_vma insn
)
6010 int opcode
= insn
& 0x1e00000;
6012 if (opcode
== 1 << 23) /* ADD */
6015 if (opcode
== 1 << 22) /* SUB */
6021 /* Perform a relocation as part of a final link. */
6023 static bfd_reloc_status_type
6024 elf32_arm_final_link_relocate (reloc_howto_type
* howto
,
6027 asection
* input_section
,
6028 bfd_byte
* contents
,
6029 Elf_Internal_Rela
* rel
,
6031 struct bfd_link_info
* info
,
6033 const char * sym_name
,
6035 struct elf_link_hash_entry
* h
,
6036 bfd_boolean
* unresolved_reloc_p
,
6037 char ** error_message
)
6039 unsigned long r_type
= howto
->type
;
6040 unsigned long r_symndx
;
6041 bfd_byte
* hit_data
= contents
+ rel
->r_offset
;
6042 bfd
* dynobj
= NULL
;
6043 Elf_Internal_Shdr
* symtab_hdr
;
6044 struct elf_link_hash_entry
** sym_hashes
;
6045 bfd_vma
* local_got_offsets
;
6046 asection
* sgot
= NULL
;
6047 asection
* splt
= NULL
;
6048 asection
* sreloc
= NULL
;
6050 bfd_signed_vma signed_addend
;
6051 struct elf32_arm_link_hash_table
* globals
;
6053 globals
= elf32_arm_hash_table (info
);
6055 BFD_ASSERT (is_arm_elf (input_bfd
));
6057 /* Some relocation types map to different relocations depending on the
6058 target. We pick the right one here. */
6059 r_type
= arm_real_reloc_type (globals
, r_type
);
6060 if (r_type
!= howto
->type
)
6061 howto
= elf32_arm_howto_from_type (r_type
);
6063 /* If the start address has been set, then set the EF_ARM_HASENTRY
6064 flag. Setting this more than once is redundant, but the cost is
6065 not too high, and it keeps the code simple.
6067 The test is done here, rather than somewhere else, because the
6068 start address is only set just before the final link commences.
6070 Note - if the user deliberately sets a start address of 0, the
6071 flag will not be set. */
6072 if (bfd_get_start_address (output_bfd
) != 0)
6073 elf_elfheader (output_bfd
)->e_flags
|= EF_ARM_HASENTRY
;
6075 dynobj
= elf_hash_table (info
)->dynobj
;
6078 sgot
= bfd_get_section_by_name (dynobj
, ".got");
6079 splt
= bfd_get_section_by_name (dynobj
, ".plt");
6081 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
6082 sym_hashes
= elf_sym_hashes (input_bfd
);
6083 local_got_offsets
= elf_local_got_offsets (input_bfd
);
6084 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6086 if (globals
->use_rel
)
6088 addend
= bfd_get_32 (input_bfd
, hit_data
) & howto
->src_mask
;
6090 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6093 signed_addend
&= ~ howto
->src_mask
;
6094 signed_addend
|= addend
;
6097 signed_addend
= addend
;
6100 addend
= signed_addend
= rel
->r_addend
;
6105 /* We don't need to find a value for this symbol. It's just a
6107 *unresolved_reloc_p
= FALSE
;
6108 return bfd_reloc_ok
;
6111 if (!globals
->vxworks_p
)
6112 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
6116 case R_ARM_ABS32_NOI
:
6118 case R_ARM_REL32_NOI
:
6124 /* Handle relocations which should use the PLT entry. ABS32/REL32
6125 will use the symbol's value, which may point to a PLT entry, but we
6126 don't need to handle that here. If we created a PLT entry, all
6127 branches in this object should go to it, except if the PLT is too
6128 far away, in which case a long branch stub should be inserted. */
6129 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
6130 && r_type
!= R_ARM_ABS32_NOI
&& r_type
!= R_ARM_REL32_NOI
6131 && r_type
!= R_ARM_CALL
)
6134 && h
->plt
.offset
!= (bfd_vma
) -1)
6136 /* If we've created a .plt section, and assigned a PLT entry to
6137 this function, it should not be known to bind locally. If
6138 it were, we would have cleared the PLT entry. */
6139 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
6141 value
= (splt
->output_section
->vma
6142 + splt
->output_offset
6144 *unresolved_reloc_p
= FALSE
;
6145 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6146 contents
, rel
->r_offset
, value
,
6150 /* When generating a shared object or relocatable executable, these
6151 relocations are copied into the output file to be resolved at
6153 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
6154 && (input_section
->flags
& SEC_ALLOC
)
6155 && !(elf32_arm_hash_table (info
)->vxworks_p
6156 && strcmp (input_section
->output_section
->name
,
6158 && ((r_type
!= R_ARM_REL32
&& r_type
!= R_ARM_REL32_NOI
)
6159 || !SYMBOL_CALLS_LOCAL (info
, h
))
6161 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6162 || h
->root
.type
!= bfd_link_hash_undefweak
)
6163 && r_type
!= R_ARM_PC24
6164 && r_type
!= R_ARM_CALL
6165 && r_type
!= R_ARM_JUMP24
6166 && r_type
!= R_ARM_PREL31
6167 && r_type
!= R_ARM_PLT32
)
6169 Elf_Internal_Rela outrel
;
6171 bfd_boolean skip
, relocate
;
6173 *unresolved_reloc_p
= FALSE
;
6177 sreloc
= _bfd_elf_get_dynamic_reloc_section (input_bfd
, input_section
,
6178 ! globals
->use_rel
);
6181 return bfd_reloc_notsupported
;
6187 outrel
.r_addend
= addend
;
6189 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
6191 if (outrel
.r_offset
== (bfd_vma
) -1)
6193 else if (outrel
.r_offset
== (bfd_vma
) -2)
6194 skip
= TRUE
, relocate
= TRUE
;
6195 outrel
.r_offset
+= (input_section
->output_section
->vma
6196 + input_section
->output_offset
);
6199 memset (&outrel
, 0, sizeof outrel
);
6204 || !h
->def_regular
))
6205 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
6210 /* This symbol is local, or marked to become local. */
6211 if (sym_flags
== STT_ARM_TFUNC
)
6213 if (globals
->symbian_p
)
6217 /* On Symbian OS, the data segment and text segement
6218 can be relocated independently. Therefore, we
6219 must indicate the segment to which this
6220 relocation is relative. The BPABI allows us to
6221 use any symbol in the right segment; we just use
6222 the section symbol as it is convenient. (We
6223 cannot use the symbol given by "h" directly as it
6224 will not appear in the dynamic symbol table.)
6226 Note that the dynamic linker ignores the section
6227 symbol value, so we don't subtract osec->vma
6228 from the emitted reloc addend. */
6230 osec
= sym_sec
->output_section
;
6232 osec
= input_section
->output_section
;
6233 symbol
= elf_section_data (osec
)->dynindx
;
6236 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
6238 if ((osec
->flags
& SEC_READONLY
) == 0
6239 && htab
->data_index_section
!= NULL
)
6240 osec
= htab
->data_index_section
;
6242 osec
= htab
->text_index_section
;
6243 symbol
= elf_section_data (osec
)->dynindx
;
6245 BFD_ASSERT (symbol
!= 0);
6248 /* On SVR4-ish systems, the dynamic loader cannot
6249 relocate the text and data segments independently,
6250 so the symbol does not matter. */
6252 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
6253 if (globals
->use_rel
)
6256 outrel
.r_addend
+= value
;
6259 loc
= sreloc
->contents
;
6260 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
6261 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6263 /* If this reloc is against an external symbol, we do not want to
6264 fiddle with the addend. Otherwise, we need to include the symbol
6265 value so that it becomes an addend for the dynamic reloc. */
6267 return bfd_reloc_ok
;
6269 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6270 contents
, rel
->r_offset
, value
,
6273 else switch (r_type
)
6276 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
6278 case R_ARM_XPC25
: /* Arm BLX instruction. */
6281 case R_ARM_PC24
: /* Arm B/BL instruction. */
6285 bfd_signed_vma branch_offset
;
6286 struct elf32_arm_stub_hash_entry
*stub_entry
= NULL
;
6288 if (r_type
== R_ARM_XPC25
)
6290 /* Check for Arm calling Arm function. */
6291 /* FIXME: Should we translate the instruction into a BL
6292 instruction instead ? */
6293 if (sym_flags
!= STT_ARM_TFUNC
)
6294 (*_bfd_error_handler
)
6295 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
6297 h
? h
->root
.root
.string
: "(local)");
6299 else if (r_type
!= R_ARM_CALL
)
6301 /* Check for Arm calling Thumb function. */
6302 if (sym_flags
== STT_ARM_TFUNC
)
6304 if (elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
6305 output_bfd
, input_section
,
6306 hit_data
, sym_sec
, rel
->r_offset
,
6307 signed_addend
, value
,
6309 return bfd_reloc_ok
;
6311 return bfd_reloc_dangerous
;
6315 /* Check if a stub has to be inserted because the
6316 destination is too far or we are changing mode. */
6317 if (r_type
== R_ARM_CALL
)
6319 /* If the call goes through a PLT entry, make sure to
6320 check distance to the right destination address. */
6321 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
6323 value
= (splt
->output_section
->vma
6324 + splt
->output_offset
6326 *unresolved_reloc_p
= FALSE
;
6329 from
= (input_section
->output_section
->vma
6330 + input_section
->output_offset
6332 branch_offset
= (bfd_signed_vma
)(value
- from
);
6334 if (branch_offset
> ARM_MAX_FWD_BRANCH_OFFSET
6335 || branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
6336 || sym_flags
== STT_ARM_TFUNC
)
6338 /* The target is out of reach, so redirect the
6339 branch to the local stub for this function. */
6341 stub_entry
= elf32_arm_get_stub_entry (input_section
,
6344 if (stub_entry
!= NULL
)
6345 value
= (stub_entry
->stub_offset
6346 + stub_entry
->stub_sec
->output_offset
6347 + stub_entry
->stub_sec
->output_section
->vma
);
6351 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
6353 S is the address of the symbol in the relocation.
6354 P is address of the instruction being relocated.
6355 A is the addend (extracted from the instruction) in bytes.
6357 S is held in 'value'.
6358 P is the base address of the section containing the
6359 instruction plus the offset of the reloc into that
6361 (input_section->output_section->vma +
6362 input_section->output_offset +
6364 A is the addend, converted into bytes, ie:
6367 Note: None of these operations have knowledge of the pipeline
6368 size of the processor, thus it is up to the assembler to
6369 encode this information into the addend. */
6370 value
-= (input_section
->output_section
->vma
6371 + input_section
->output_offset
);
6372 value
-= rel
->r_offset
;
6373 if (globals
->use_rel
)
6374 value
+= (signed_addend
<< howto
->size
);
6376 /* RELA addends do not have to be adjusted by howto->size. */
6377 value
+= signed_addend
;
6379 signed_addend
= value
;
6380 signed_addend
>>= howto
->rightshift
;
6382 /* A branch to an undefined weak symbol is turned into a jump to
6383 the next instruction unless a PLT entry will be created. */
6384 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
6385 && !(splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1))
6387 value
= (bfd_get_32 (input_bfd
, hit_data
) & 0xf0000000)
6392 /* Perform a signed range check. */
6393 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
6394 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
6395 return bfd_reloc_overflow
;
6397 addend
= (value
& 2);
6399 value
= (signed_addend
& howto
->dst_mask
)
6400 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
6402 /* Set the H bit in the BLX instruction. */
6403 if (sym_flags
== STT_ARM_TFUNC
)
6408 value
&= ~(bfd_vma
)(1 << 24);
6410 if (r_type
== R_ARM_CALL
)
6412 /* Select the correct instruction (BL or BLX). */
6413 /* Only if we are not handling a BL to a stub. In this
6414 case, mode switching is performed by the stub. */
6415 if (sym_flags
== STT_ARM_TFUNC
&& !stub_entry
)
6419 value
&= ~(bfd_vma
)(1 << 28);
6429 if (sym_flags
== STT_ARM_TFUNC
)
6433 case R_ARM_ABS32_NOI
:
6439 if (sym_flags
== STT_ARM_TFUNC
)
6441 value
-= (input_section
->output_section
->vma
6442 + input_section
->output_offset
+ rel
->r_offset
);
6445 case R_ARM_REL32_NOI
:
6447 value
-= (input_section
->output_section
->vma
6448 + input_section
->output_offset
+ rel
->r_offset
);
6452 value
-= (input_section
->output_section
->vma
6453 + input_section
->output_offset
+ rel
->r_offset
);
6454 value
+= signed_addend
;
6455 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
6457 /* Check for overflow. */
6458 if ((value
^ (value
>> 1)) & (1 << 30))
6459 return bfd_reloc_overflow
;
6461 value
&= 0x7fffffff;
6462 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
6463 if (sym_flags
== STT_ARM_TFUNC
)
6468 bfd_put_32 (input_bfd
, value
, hit_data
);
6469 return bfd_reloc_ok
;
6473 if ((long) value
> 0x7f || (long) value
< -0x80)
6474 return bfd_reloc_overflow
;
6476 bfd_put_8 (input_bfd
, value
, hit_data
);
6477 return bfd_reloc_ok
;
6482 if ((long) value
> 0x7fff || (long) value
< -0x8000)
6483 return bfd_reloc_overflow
;
6485 bfd_put_16 (input_bfd
, value
, hit_data
);
6486 return bfd_reloc_ok
;
6488 case R_ARM_THM_ABS5
:
6489 /* Support ldr and str instructions for the thumb. */
6490 if (globals
->use_rel
)
6492 /* Need to refetch addend. */
6493 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
6494 /* ??? Need to determine shift amount from operand size. */
6495 addend
>>= howto
->rightshift
;
6499 /* ??? Isn't value unsigned? */
6500 if ((long) value
> 0x1f || (long) value
< -0x10)
6501 return bfd_reloc_overflow
;
6503 /* ??? Value needs to be properly shifted into place first. */
6504 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
6505 bfd_put_16 (input_bfd
, value
, hit_data
);
6506 return bfd_reloc_ok
;
6508 case R_ARM_THM_ALU_PREL_11_0
:
6509 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
6512 bfd_signed_vma relocation
;
6514 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
6515 | bfd_get_16 (input_bfd
, hit_data
+ 2);
6517 if (globals
->use_rel
)
6519 signed_addend
= (insn
& 0xff) | ((insn
& 0x7000) >> 4)
6520 | ((insn
& (1 << 26)) >> 15);
6521 if (insn
& 0xf00000)
6522 signed_addend
= -signed_addend
;
6525 relocation
= value
+ signed_addend
;
6526 relocation
-= (input_section
->output_section
->vma
6527 + input_section
->output_offset
6530 value
= abs (relocation
);
6532 if (value
>= 0x1000)
6533 return bfd_reloc_overflow
;
6535 insn
= (insn
& 0xfb0f8f00) | (value
& 0xff)
6536 | ((value
& 0x700) << 4)
6537 | ((value
& 0x800) << 15);
6541 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
6542 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
6544 return bfd_reloc_ok
;
6547 case R_ARM_THM_PC12
:
6548 /* Corresponds to: ldr.w reg, [pc, #offset]. */
6551 bfd_signed_vma relocation
;
6553 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
6554 | bfd_get_16 (input_bfd
, hit_data
+ 2);
6556 if (globals
->use_rel
)
6558 signed_addend
= insn
& 0xfff;
6559 if (!(insn
& (1 << 23)))
6560 signed_addend
= -signed_addend
;
6563 relocation
= value
+ signed_addend
;
6564 relocation
-= (input_section
->output_section
->vma
6565 + input_section
->output_offset
6568 value
= abs (relocation
);
6570 if (value
>= 0x1000)
6571 return bfd_reloc_overflow
;
6573 insn
= (insn
& 0xff7ff000) | value
;
6574 if (relocation
>= 0)
6577 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
6578 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
6580 return bfd_reloc_ok
;
6583 case R_ARM_THM_XPC22
:
6584 case R_ARM_THM_CALL
:
6585 case R_ARM_THM_JUMP24
:
6586 /* Thumb BL (branch long instruction). */
6590 bfd_boolean overflow
= FALSE
;
6591 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
6592 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
6593 bfd_signed_vma reloc_signed_max
;
6594 bfd_signed_vma reloc_signed_min
;
6596 bfd_signed_vma signed_check
;
6598 int thumb2
= using_thumb2 (globals
);
6600 /* A branch to an undefined weak symbol is turned into a jump to
6601 the next instruction unless a PLT entry will be created. */
6602 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
6603 && !(splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1))
6605 bfd_put_16 (input_bfd
, 0xe000, hit_data
);
6606 bfd_put_16 (input_bfd
, 0xbf00, hit_data
+ 2);
6607 return bfd_reloc_ok
;
6610 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
6611 with Thumb-1) involving the J1 and J2 bits. */
6612 if (globals
->use_rel
)
6614 bfd_vma s
= (upper_insn
& (1 << 10)) >> 10;
6615 bfd_vma upper
= upper_insn
& 0x3ff;
6616 bfd_vma lower
= lower_insn
& 0x7ff;
6617 bfd_vma j1
= (lower_insn
& (1 << 13)) >> 13;
6618 bfd_vma j2
= (lower_insn
& (1 << 11)) >> 11;
6619 bfd_vma i1
= j1
^ s
? 0 : 1;
6620 bfd_vma i2
= j2
^ s
? 0 : 1;
6622 addend
= (i1
<< 23) | (i2
<< 22) | (upper
<< 12) | (lower
<< 1);
6624 addend
= (addend
| ((s
? 0 : 1) << 24)) - (1 << 24);
6626 signed_addend
= addend
;
6629 if (r_type
== R_ARM_THM_XPC22
)
6631 /* Check for Thumb to Thumb call. */
6632 /* FIXME: Should we translate the instruction into a BL
6633 instruction instead ? */
6634 if (sym_flags
== STT_ARM_TFUNC
)
6635 (*_bfd_error_handler
)
6636 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
6638 h
? h
->root
.root
.string
: "(local)");
6642 /* If it is not a call to Thumb, assume call to Arm.
6643 If it is a call relative to a section name, then it is not a
6644 function call at all, but rather a long jump. Calls through
6645 the PLT do not require stubs. */
6646 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
6647 && (h
== NULL
|| splt
== NULL
6648 || h
->plt
.offset
== (bfd_vma
) -1))
6650 if (globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
6652 /* Convert BL to BLX. */
6653 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6655 else if (r_type
!= R_ARM_THM_CALL
)
6657 if (elf32_thumb_to_arm_stub
6658 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
6659 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
,
6661 return bfd_reloc_ok
;
6663 return bfd_reloc_dangerous
;
6666 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
6667 && r_type
== R_ARM_THM_CALL
)
6669 /* Make sure this is a BL. */
6670 lower_insn
|= 0x1800;
6674 /* Handle calls via the PLT. */
6675 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
6677 value
= (splt
->output_section
->vma
6678 + splt
->output_offset
6680 if (globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
6682 /* If the Thumb BLX instruction is available, convert the
6683 BL to a BLX instruction to call the ARM-mode PLT entry. */
6684 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6687 /* Target the Thumb stub before the ARM PLT entry. */
6688 value
-= PLT_THUMB_STUB_SIZE
;
6689 *unresolved_reloc_p
= FALSE
;
6692 if (r_type
== R_ARM_THM_CALL
)
6694 /* Check if a stub has to be inserted because the destination
6697 bfd_signed_vma branch_offset
;
6698 struct elf32_arm_stub_hash_entry
*stub_entry
= NULL
;
6700 from
= (input_section
->output_section
->vma
6701 + input_section
->output_offset
6703 branch_offset
= (bfd_signed_vma
)(value
- from
);
6706 && (branch_offset
> THM_MAX_FWD_BRANCH_OFFSET
6707 || (branch_offset
< THM_MAX_BWD_BRANCH_OFFSET
)))
6710 && (branch_offset
> THM2_MAX_FWD_BRANCH_OFFSET
6711 || (branch_offset
< THM2_MAX_BWD_BRANCH_OFFSET
)))
6712 || ((sym_flags
!= STT_ARM_TFUNC
) && !globals
->use_blx
))
6714 /* The target is out of reach or we are changing modes, so
6715 redirect the branch to the local stub for this
6717 stub_entry
= elf32_arm_get_stub_entry (input_section
,
6720 if (stub_entry
!= NULL
)
6721 value
= (stub_entry
->stub_offset
6722 + stub_entry
->stub_sec
->output_offset
6723 + stub_entry
->stub_sec
->output_section
->vma
);
6725 /* If this call becomes a call to Arm, force BLX. */
6726 if (globals
->use_blx
)
6729 && !arm_stub_is_thumb (stub_entry
->stub_type
))
6730 || (sym_flags
!= STT_ARM_TFUNC
))
6731 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6736 relocation
= value
+ signed_addend
;
6738 relocation
-= (input_section
->output_section
->vma
6739 + input_section
->output_offset
6742 check
= relocation
>> howto
->rightshift
;
6744 /* If this is a signed value, the rightshift just dropped
6745 leading 1 bits (assuming twos complement). */
6746 if ((bfd_signed_vma
) relocation
>= 0)
6747 signed_check
= check
;
6749 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
6751 /* Calculate the permissable maximum and minimum values for
6752 this relocation according to whether we're relocating for
6754 bitsize
= howto
->bitsize
;
6757 reloc_signed_max
= ((1 << (bitsize
- 1)) - 1) >> howto
->rightshift
;
6758 reloc_signed_min
= ~reloc_signed_max
;
6760 /* Assumes two's complement. */
6761 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6764 if ((lower_insn
& 0x5000) == 0x4000)
6765 /* For a BLX instruction, make sure that the relocation is rounded up
6766 to a word boundary. This follows the semantics of the instruction
6767 which specifies that bit 1 of the target address will come from bit
6768 1 of the base address. */
6769 relocation
= (relocation
+ 2) & ~ 3;
6771 /* Put RELOCATION back into the insn. Assumes two's complement.
6772 We use the Thumb-2 encoding, which is safe even if dealing with
6773 a Thumb-1 instruction by virtue of our overflow check above. */
6774 reloc_sign
= (signed_check
< 0) ? 1 : 0;
6775 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff)
6776 | ((relocation
>> 12) & 0x3ff)
6777 | (reloc_sign
<< 10);
6778 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x2fff)
6779 | (((!((relocation
>> 23) & 1)) ^ reloc_sign
) << 13)
6780 | (((!((relocation
>> 22) & 1)) ^ reloc_sign
) << 11)
6781 | ((relocation
>> 1) & 0x7ff);
6783 /* Put the relocated value back in the object file: */
6784 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
6785 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
6787 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
6791 case R_ARM_THM_JUMP19
:
6792 /* Thumb32 conditional branch instruction. */
6795 bfd_boolean overflow
= FALSE
;
6796 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
6797 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
6798 bfd_signed_vma reloc_signed_max
= 0xffffe;
6799 bfd_signed_vma reloc_signed_min
= -0x100000;
6800 bfd_signed_vma signed_check
;
6802 /* Need to refetch the addend, reconstruct the top three bits,
6803 and squish the two 11 bit pieces together. */
6804 if (globals
->use_rel
)
6806 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
6807 bfd_vma upper
= (upper_insn
& 0x003f);
6808 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
6809 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
6810 bfd_vma lower
= (lower_insn
& 0x07ff);
6815 upper
-= 0x0100; /* Sign extend. */
6817 addend
= (upper
<< 12) | (lower
<< 1);
6818 signed_addend
= addend
;
6821 /* Handle calls via the PLT. */
6822 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
6824 value
= (splt
->output_section
->vma
6825 + splt
->output_offset
6827 /* Target the Thumb stub before the ARM PLT entry. */
6828 value
-= PLT_THUMB_STUB_SIZE
;
6829 *unresolved_reloc_p
= FALSE
;
6832 /* ??? Should handle interworking? GCC might someday try to
6833 use this for tail calls. */
6835 relocation
= value
+ signed_addend
;
6836 relocation
-= (input_section
->output_section
->vma
6837 + input_section
->output_offset
6839 signed_check
= (bfd_signed_vma
) relocation
;
6841 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6844 /* Put RELOCATION back into the insn. */
6846 bfd_vma S
= (relocation
& 0x00100000) >> 20;
6847 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
6848 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
6849 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
6850 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
6852 upper_insn
= (upper_insn
& 0xfbc0) | (S
<< 10) | hi
;
6853 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
6856 /* Put the relocated value back in the object file: */
6857 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
6858 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
6860 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
6863 case R_ARM_THM_JUMP11
:
6864 case R_ARM_THM_JUMP8
:
6865 case R_ARM_THM_JUMP6
:
6866 /* Thumb B (branch) instruction). */
6868 bfd_signed_vma relocation
;
6869 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
6870 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
6871 bfd_signed_vma signed_check
;
6873 /* CZB cannot jump backward. */
6874 if (r_type
== R_ARM_THM_JUMP6
)
6875 reloc_signed_min
= 0;
6877 if (globals
->use_rel
)
6879 /* Need to refetch addend. */
6880 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
6881 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6884 signed_addend
&= ~ howto
->src_mask
;
6885 signed_addend
|= addend
;
6888 signed_addend
= addend
;
6889 /* The value in the insn has been right shifted. We need to
6890 undo this, so that we can perform the address calculation
6891 in terms of bytes. */
6892 signed_addend
<<= howto
->rightshift
;
6894 relocation
= value
+ signed_addend
;
6896 relocation
-= (input_section
->output_section
->vma
6897 + input_section
->output_offset
6900 relocation
>>= howto
->rightshift
;
6901 signed_check
= relocation
;
6903 if (r_type
== R_ARM_THM_JUMP6
)
6904 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
6906 relocation
&= howto
->dst_mask
;
6907 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
6909 bfd_put_16 (input_bfd
, relocation
, hit_data
);
6911 /* Assumes two's complement. */
6912 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6913 return bfd_reloc_overflow
;
6915 return bfd_reloc_ok
;
6918 case R_ARM_ALU_PCREL7_0
:
6919 case R_ARM_ALU_PCREL15_8
:
6920 case R_ARM_ALU_PCREL23_15
:
6925 insn
= bfd_get_32 (input_bfd
, hit_data
);
6926 if (globals
->use_rel
)
6928 /* Extract the addend. */
6929 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
6930 signed_addend
= addend
;
6932 relocation
= value
+ signed_addend
;
6934 relocation
-= (input_section
->output_section
->vma
6935 + input_section
->output_offset
6937 insn
= (insn
& ~0xfff)
6938 | ((howto
->bitpos
<< 7) & 0xf00)
6939 | ((relocation
>> howto
->bitpos
) & 0xff);
6940 bfd_put_32 (input_bfd
, value
, hit_data
);
6942 return bfd_reloc_ok
;
6944 case R_ARM_GNU_VTINHERIT
:
6945 case R_ARM_GNU_VTENTRY
:
6946 return bfd_reloc_ok
;
6948 case R_ARM_GOTOFF32
:
6949 /* Relocation is relative to the start of the
6950 global offset table. */
6952 BFD_ASSERT (sgot
!= NULL
);
6954 return bfd_reloc_notsupported
;
6956 /* If we are addressing a Thumb function, we need to adjust the
6957 address by one, so that attempts to call the function pointer will
6958 correctly interpret it as Thumb code. */
6959 if (sym_flags
== STT_ARM_TFUNC
)
6962 /* Note that sgot->output_offset is not involved in this
6963 calculation. We always want the start of .got. If we
6964 define _GLOBAL_OFFSET_TABLE in a different way, as is
6965 permitted by the ABI, we might have to change this
6967 value
-= sgot
->output_section
->vma
;
6968 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6969 contents
, rel
->r_offset
, value
,
6973 /* Use global offset table as symbol value. */
6974 BFD_ASSERT (sgot
!= NULL
);
6977 return bfd_reloc_notsupported
;
6979 *unresolved_reloc_p
= FALSE
;
6980 value
= sgot
->output_section
->vma
;
6981 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6982 contents
, rel
->r_offset
, value
,
6986 case R_ARM_GOT_PREL
:
6987 /* Relocation is to the entry for this symbol in the
6988 global offset table. */
6990 return bfd_reloc_notsupported
;
6997 off
= h
->got
.offset
;
6998 BFD_ASSERT (off
!= (bfd_vma
) -1);
6999 dyn
= globals
->root
.dynamic_sections_created
;
7001 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
7003 && SYMBOL_REFERENCES_LOCAL (info
, h
))
7004 || (ELF_ST_VISIBILITY (h
->other
)
7005 && h
->root
.type
== bfd_link_hash_undefweak
))
7007 /* This is actually a static link, or it is a -Bsymbolic link
7008 and the symbol is defined locally. We must initialize this
7009 entry in the global offset table. Since the offset must
7010 always be a multiple of 4, we use the least significant bit
7011 to record whether we have initialized it already.
7013 When doing a dynamic link, we create a .rel(a).got relocation
7014 entry to initialize the value. This is done in the
7015 finish_dynamic_symbol routine. */
7020 /* If we are addressing a Thumb function, we need to
7021 adjust the address by one, so that attempts to
7022 call the function pointer will correctly
7023 interpret it as Thumb code. */
7024 if (sym_flags
== STT_ARM_TFUNC
)
7027 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
7032 *unresolved_reloc_p
= FALSE
;
7034 value
= sgot
->output_offset
+ off
;
7040 BFD_ASSERT (local_got_offsets
!= NULL
&&
7041 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
7043 off
= local_got_offsets
[r_symndx
];
7045 /* The offset must always be a multiple of 4. We use the
7046 least significant bit to record whether we have already
7047 generated the necessary reloc. */
7052 /* If we are addressing a Thumb function, we need to
7053 adjust the address by one, so that attempts to
7054 call the function pointer will correctly
7055 interpret it as Thumb code. */
7056 if (sym_flags
== STT_ARM_TFUNC
)
7059 if (globals
->use_rel
)
7060 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
7065 Elf_Internal_Rela outrel
;
7068 srelgot
= (bfd_get_section_by_name
7069 (dynobj
, RELOC_SECTION (globals
, ".got")));
7070 BFD_ASSERT (srelgot
!= NULL
);
7072 outrel
.r_addend
= addend
+ value
;
7073 outrel
.r_offset
= (sgot
->output_section
->vma
7074 + sgot
->output_offset
7076 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
7077 loc
= srelgot
->contents
;
7078 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
7079 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
7082 local_got_offsets
[r_symndx
] |= 1;
7085 value
= sgot
->output_offset
+ off
;
7087 if (r_type
!= R_ARM_GOT32
)
7088 value
+= sgot
->output_section
->vma
;
7090 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7091 contents
, rel
->r_offset
, value
,
7094 case R_ARM_TLS_LDO32
:
7095 value
= value
- dtpoff_base (info
);
7097 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7098 contents
, rel
->r_offset
, value
,
7101 case R_ARM_TLS_LDM32
:
7105 if (globals
->sgot
== NULL
)
7108 off
= globals
->tls_ldm_got
.offset
;
7114 /* If we don't know the module number, create a relocation
7118 Elf_Internal_Rela outrel
;
7121 if (globals
->srelgot
== NULL
)
7124 outrel
.r_addend
= 0;
7125 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
7126 + globals
->sgot
->output_offset
+ off
);
7127 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
7129 if (globals
->use_rel
)
7130 bfd_put_32 (output_bfd
, outrel
.r_addend
,
7131 globals
->sgot
->contents
+ off
);
7133 loc
= globals
->srelgot
->contents
;
7134 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
7135 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
7138 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
7140 globals
->tls_ldm_got
.offset
|= 1;
7143 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
7144 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
7146 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7147 contents
, rel
->r_offset
, value
,
7151 case R_ARM_TLS_GD32
:
7152 case R_ARM_TLS_IE32
:
7158 if (globals
->sgot
== NULL
)
7165 dyn
= globals
->root
.dynamic_sections_created
;
7166 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
7168 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
7170 *unresolved_reloc_p
= FALSE
;
7173 off
= h
->got
.offset
;
7174 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
7178 if (local_got_offsets
== NULL
)
7180 off
= local_got_offsets
[r_symndx
];
7181 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
7184 if (tls_type
== GOT_UNKNOWN
)
7191 bfd_boolean need_relocs
= FALSE
;
7192 Elf_Internal_Rela outrel
;
7193 bfd_byte
*loc
= NULL
;
7196 /* The GOT entries have not been initialized yet. Do it
7197 now, and emit any relocations. If both an IE GOT and a
7198 GD GOT are necessary, we emit the GD first. */
7200 if ((info
->shared
|| indx
!= 0)
7202 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7203 || h
->root
.type
!= bfd_link_hash_undefweak
))
7206 if (globals
->srelgot
== NULL
)
7208 loc
= globals
->srelgot
->contents
;
7209 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
7212 if (tls_type
& GOT_TLS_GD
)
7216 outrel
.r_addend
= 0;
7217 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
7218 + globals
->sgot
->output_offset
7220 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
7222 if (globals
->use_rel
)
7223 bfd_put_32 (output_bfd
, outrel
.r_addend
,
7224 globals
->sgot
->contents
+ cur_off
);
7226 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
7227 globals
->srelgot
->reloc_count
++;
7228 loc
+= RELOC_SIZE (globals
);
7231 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
7232 globals
->sgot
->contents
+ cur_off
+ 4);
7235 outrel
.r_addend
= 0;
7236 outrel
.r_info
= ELF32_R_INFO (indx
,
7237 R_ARM_TLS_DTPOFF32
);
7238 outrel
.r_offset
+= 4;
7240 if (globals
->use_rel
)
7241 bfd_put_32 (output_bfd
, outrel
.r_addend
,
7242 globals
->sgot
->contents
+ cur_off
+ 4);
7245 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
7246 globals
->srelgot
->reloc_count
++;
7247 loc
+= RELOC_SIZE (globals
);
7252 /* If we are not emitting relocations for a
7253 general dynamic reference, then we must be in a
7254 static link or an executable link with the
7255 symbol binding locally. Mark it as belonging
7256 to module 1, the executable. */
7257 bfd_put_32 (output_bfd
, 1,
7258 globals
->sgot
->contents
+ cur_off
);
7259 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
7260 globals
->sgot
->contents
+ cur_off
+ 4);
7266 if (tls_type
& GOT_TLS_IE
)
7271 outrel
.r_addend
= value
- dtpoff_base (info
);
7273 outrel
.r_addend
= 0;
7274 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
7275 + globals
->sgot
->output_offset
7277 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
7279 if (globals
->use_rel
)
7280 bfd_put_32 (output_bfd
, outrel
.r_addend
,
7281 globals
->sgot
->contents
+ cur_off
);
7283 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
7284 globals
->srelgot
->reloc_count
++;
7285 loc
+= RELOC_SIZE (globals
);
7288 bfd_put_32 (output_bfd
, tpoff (info
, value
),
7289 globals
->sgot
->contents
+ cur_off
);
7296 local_got_offsets
[r_symndx
] |= 1;
7299 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
7301 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
7302 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
7304 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7305 contents
, rel
->r_offset
, value
,
7309 case R_ARM_TLS_LE32
:
7312 (*_bfd_error_handler
)
7313 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
7314 input_bfd
, input_section
,
7315 (long) rel
->r_offset
, howto
->name
);
7319 value
= tpoff (info
, value
);
7321 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7322 contents
, rel
->r_offset
, value
,
7326 if (globals
->fix_v4bx
)
7328 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7330 /* Ensure that we have a BX instruction. */
7331 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
7333 if (globals
->fix_v4bx
== 2 && (insn
& 0xf) != 0xf)
7335 /* Branch to veneer. */
7337 glue_addr
= elf32_arm_bx_glue (info
, insn
& 0xf);
7338 glue_addr
-= input_section
->output_section
->vma
7339 + input_section
->output_offset
7340 + rel
->r_offset
+ 8;
7341 insn
= (insn
& 0xf0000000) | 0x0a000000
7342 | ((glue_addr
>> 2) & 0x00ffffff);
7346 /* Preserve Rm (lowest four bits) and the condition code
7347 (highest four bits). Other bits encode MOV PC,Rm. */
7348 insn
= (insn
& 0xf000000f) | 0x01a0f000;
7351 bfd_put_32 (input_bfd
, insn
, hit_data
);
7353 return bfd_reloc_ok
;
7355 case R_ARM_MOVW_ABS_NC
:
7356 case R_ARM_MOVT_ABS
:
7357 case R_ARM_MOVW_PREL_NC
:
7358 case R_ARM_MOVT_PREL
:
7359 /* Until we properly support segment-base-relative addressing then
7360 we assume the segment base to be zero, as for the group relocations.
7361 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
7362 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
7363 case R_ARM_MOVW_BREL_NC
:
7364 case R_ARM_MOVW_BREL
:
7365 case R_ARM_MOVT_BREL
:
7367 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7369 if (globals
->use_rel
)
7371 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
7372 signed_addend
= (addend
^ 0x8000) - 0x8000;
7375 value
+= signed_addend
;
7377 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
7378 value
-= (input_section
->output_section
->vma
7379 + input_section
->output_offset
+ rel
->r_offset
);
7381 if (r_type
== R_ARM_MOVW_BREL
&& value
>= 0x10000)
7382 return bfd_reloc_overflow
;
7384 if (sym_flags
== STT_ARM_TFUNC
)
7387 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
7388 || r_type
== R_ARM_MOVT_BREL
)
7392 insn
|= value
& 0xfff;
7393 insn
|= (value
& 0xf000) << 4;
7394 bfd_put_32 (input_bfd
, insn
, hit_data
);
7396 return bfd_reloc_ok
;
7398 case R_ARM_THM_MOVW_ABS_NC
:
7399 case R_ARM_THM_MOVT_ABS
:
7400 case R_ARM_THM_MOVW_PREL_NC
:
7401 case R_ARM_THM_MOVT_PREL
:
7402 /* Until we properly support segment-base-relative addressing then
7403 we assume the segment base to be zero, as for the above relocations.
7404 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
7405 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
7406 as R_ARM_THM_MOVT_ABS. */
7407 case R_ARM_THM_MOVW_BREL_NC
:
7408 case R_ARM_THM_MOVW_BREL
:
7409 case R_ARM_THM_MOVT_BREL
:
7413 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
7414 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
7416 if (globals
->use_rel
)
7418 addend
= ((insn
>> 4) & 0xf000)
7419 | ((insn
>> 15) & 0x0800)
7420 | ((insn
>> 4) & 0x0700)
7422 signed_addend
= (addend
^ 0x8000) - 0x8000;
7425 value
+= signed_addend
;
7427 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
7428 value
-= (input_section
->output_section
->vma
7429 + input_section
->output_offset
+ rel
->r_offset
);
7431 if (r_type
== R_ARM_THM_MOVW_BREL
&& value
>= 0x10000)
7432 return bfd_reloc_overflow
;
7434 if (sym_flags
== STT_ARM_TFUNC
)
7437 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
7438 || r_type
== R_ARM_THM_MOVT_BREL
)
7442 insn
|= (value
& 0xf000) << 4;
7443 insn
|= (value
& 0x0800) << 15;
7444 insn
|= (value
& 0x0700) << 4;
7445 insn
|= (value
& 0x00ff);
7447 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
7448 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
7450 return bfd_reloc_ok
;
7452 case R_ARM_ALU_PC_G0_NC
:
7453 case R_ARM_ALU_PC_G1_NC
:
7454 case R_ARM_ALU_PC_G0
:
7455 case R_ARM_ALU_PC_G1
:
7456 case R_ARM_ALU_PC_G2
:
7457 case R_ARM_ALU_SB_G0_NC
:
7458 case R_ARM_ALU_SB_G1_NC
:
7459 case R_ARM_ALU_SB_G0
:
7460 case R_ARM_ALU_SB_G1
:
7461 case R_ARM_ALU_SB_G2
:
7463 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7464 bfd_vma pc
= input_section
->output_section
->vma
7465 + input_section
->output_offset
+ rel
->r_offset
;
7466 /* sb should be the origin of the *segment* containing the symbol.
7467 It is not clear how to obtain this OS-dependent value, so we
7468 make an arbitrary choice of zero. */
7472 bfd_signed_vma signed_value
;
7475 /* Determine which group of bits to select. */
7478 case R_ARM_ALU_PC_G0_NC
:
7479 case R_ARM_ALU_PC_G0
:
7480 case R_ARM_ALU_SB_G0_NC
:
7481 case R_ARM_ALU_SB_G0
:
7485 case R_ARM_ALU_PC_G1_NC
:
7486 case R_ARM_ALU_PC_G1
:
7487 case R_ARM_ALU_SB_G1_NC
:
7488 case R_ARM_ALU_SB_G1
:
7492 case R_ARM_ALU_PC_G2
:
7493 case R_ARM_ALU_SB_G2
:
7501 /* If REL, extract the addend from the insn. If RELA, it will
7502 have already been fetched for us. */
7503 if (globals
->use_rel
)
7506 bfd_vma constant
= insn
& 0xff;
7507 bfd_vma rotation
= (insn
& 0xf00) >> 8;
7510 signed_addend
= constant
;
7513 /* Compensate for the fact that in the instruction, the
7514 rotation is stored in multiples of 2 bits. */
7517 /* Rotate "constant" right by "rotation" bits. */
7518 signed_addend
= (constant
>> rotation
) |
7519 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
7522 /* Determine if the instruction is an ADD or a SUB.
7523 (For REL, this determines the sign of the addend.) */
7524 negative
= identify_add_or_sub (insn
);
7527 (*_bfd_error_handler
)
7528 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
7529 input_bfd
, input_section
,
7530 (long) rel
->r_offset
, howto
->name
);
7531 return bfd_reloc_overflow
;
7534 signed_addend
*= negative
;
7537 /* Compute the value (X) to go in the place. */
7538 if (r_type
== R_ARM_ALU_PC_G0_NC
7539 || r_type
== R_ARM_ALU_PC_G1_NC
7540 || r_type
== R_ARM_ALU_PC_G0
7541 || r_type
== R_ARM_ALU_PC_G1
7542 || r_type
== R_ARM_ALU_PC_G2
)
7544 signed_value
= value
- pc
+ signed_addend
;
7546 /* Section base relative. */
7547 signed_value
= value
- sb
+ signed_addend
;
7549 /* If the target symbol is a Thumb function, then set the
7550 Thumb bit in the address. */
7551 if (sym_flags
== STT_ARM_TFUNC
)
7554 /* Calculate the value of the relevant G_n, in encoded
7555 constant-with-rotation format. */
7556 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
7559 /* Check for overflow if required. */
7560 if ((r_type
== R_ARM_ALU_PC_G0
7561 || r_type
== R_ARM_ALU_PC_G1
7562 || r_type
== R_ARM_ALU_PC_G2
7563 || r_type
== R_ARM_ALU_SB_G0
7564 || r_type
== R_ARM_ALU_SB_G1
7565 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
7567 (*_bfd_error_handler
)
7568 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7569 input_bfd
, input_section
,
7570 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7571 return bfd_reloc_overflow
;
7574 /* Mask out the value and the ADD/SUB part of the opcode; take care
7575 not to destroy the S bit. */
7578 /* Set the opcode according to whether the value to go in the
7579 place is negative. */
7580 if (signed_value
< 0)
7585 /* Encode the offset. */
7588 bfd_put_32 (input_bfd
, insn
, hit_data
);
7590 return bfd_reloc_ok
;
7592 case R_ARM_LDR_PC_G0
:
7593 case R_ARM_LDR_PC_G1
:
7594 case R_ARM_LDR_PC_G2
:
7595 case R_ARM_LDR_SB_G0
:
7596 case R_ARM_LDR_SB_G1
:
7597 case R_ARM_LDR_SB_G2
:
7599 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7600 bfd_vma pc
= input_section
->output_section
->vma
7601 + input_section
->output_offset
+ rel
->r_offset
;
7602 bfd_vma sb
= 0; /* See note above. */
7604 bfd_signed_vma signed_value
;
7607 /* Determine which groups of bits to calculate. */
7610 case R_ARM_LDR_PC_G0
:
7611 case R_ARM_LDR_SB_G0
:
7615 case R_ARM_LDR_PC_G1
:
7616 case R_ARM_LDR_SB_G1
:
7620 case R_ARM_LDR_PC_G2
:
7621 case R_ARM_LDR_SB_G2
:
7629 /* If REL, extract the addend from the insn. If RELA, it will
7630 have already been fetched for us. */
7631 if (globals
->use_rel
)
7633 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7634 signed_addend
= negative
* (insn
& 0xfff);
7637 /* Compute the value (X) to go in the place. */
7638 if (r_type
== R_ARM_LDR_PC_G0
7639 || r_type
== R_ARM_LDR_PC_G1
7640 || r_type
== R_ARM_LDR_PC_G2
)
7642 signed_value
= value
- pc
+ signed_addend
;
7644 /* Section base relative. */
7645 signed_value
= value
- sb
+ signed_addend
;
7647 /* Calculate the value of the relevant G_{n-1} to obtain
7648 the residual at that stage. */
7649 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7651 /* Check for overflow. */
7652 if (residual
>= 0x1000)
7654 (*_bfd_error_handler
)
7655 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7656 input_bfd
, input_section
,
7657 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7658 return bfd_reloc_overflow
;
7661 /* Mask out the value and U bit. */
7664 /* Set the U bit if the value to go in the place is non-negative. */
7665 if (signed_value
>= 0)
7668 /* Encode the offset. */
7671 bfd_put_32 (input_bfd
, insn
, hit_data
);
7673 return bfd_reloc_ok
;
7675 case R_ARM_LDRS_PC_G0
:
7676 case R_ARM_LDRS_PC_G1
:
7677 case R_ARM_LDRS_PC_G2
:
7678 case R_ARM_LDRS_SB_G0
:
7679 case R_ARM_LDRS_SB_G1
:
7680 case R_ARM_LDRS_SB_G2
:
7682 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7683 bfd_vma pc
= input_section
->output_section
->vma
7684 + input_section
->output_offset
+ rel
->r_offset
;
7685 bfd_vma sb
= 0; /* See note above. */
7687 bfd_signed_vma signed_value
;
7690 /* Determine which groups of bits to calculate. */
7693 case R_ARM_LDRS_PC_G0
:
7694 case R_ARM_LDRS_SB_G0
:
7698 case R_ARM_LDRS_PC_G1
:
7699 case R_ARM_LDRS_SB_G1
:
7703 case R_ARM_LDRS_PC_G2
:
7704 case R_ARM_LDRS_SB_G2
:
7712 /* If REL, extract the addend from the insn. If RELA, it will
7713 have already been fetched for us. */
7714 if (globals
->use_rel
)
7716 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7717 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
7720 /* Compute the value (X) to go in the place. */
7721 if (r_type
== R_ARM_LDRS_PC_G0
7722 || r_type
== R_ARM_LDRS_PC_G1
7723 || r_type
== R_ARM_LDRS_PC_G2
)
7725 signed_value
= value
- pc
+ signed_addend
;
7727 /* Section base relative. */
7728 signed_value
= value
- sb
+ signed_addend
;
7730 /* Calculate the value of the relevant G_{n-1} to obtain
7731 the residual at that stage. */
7732 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7734 /* Check for overflow. */
7735 if (residual
>= 0x100)
7737 (*_bfd_error_handler
)
7738 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7739 input_bfd
, input_section
,
7740 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7741 return bfd_reloc_overflow
;
7744 /* Mask out the value and U bit. */
7747 /* Set the U bit if the value to go in the place is non-negative. */
7748 if (signed_value
>= 0)
7751 /* Encode the offset. */
7752 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
7754 bfd_put_32 (input_bfd
, insn
, hit_data
);
7756 return bfd_reloc_ok
;
7758 case R_ARM_LDC_PC_G0
:
7759 case R_ARM_LDC_PC_G1
:
7760 case R_ARM_LDC_PC_G2
:
7761 case R_ARM_LDC_SB_G0
:
7762 case R_ARM_LDC_SB_G1
:
7763 case R_ARM_LDC_SB_G2
:
7765 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7766 bfd_vma pc
= input_section
->output_section
->vma
7767 + input_section
->output_offset
+ rel
->r_offset
;
7768 bfd_vma sb
= 0; /* See note above. */
7770 bfd_signed_vma signed_value
;
7773 /* Determine which groups of bits to calculate. */
7776 case R_ARM_LDC_PC_G0
:
7777 case R_ARM_LDC_SB_G0
:
7781 case R_ARM_LDC_PC_G1
:
7782 case R_ARM_LDC_SB_G1
:
7786 case R_ARM_LDC_PC_G2
:
7787 case R_ARM_LDC_SB_G2
:
7795 /* If REL, extract the addend from the insn. If RELA, it will
7796 have already been fetched for us. */
7797 if (globals
->use_rel
)
7799 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7800 signed_addend
= negative
* ((insn
& 0xff) << 2);
7803 /* Compute the value (X) to go in the place. */
7804 if (r_type
== R_ARM_LDC_PC_G0
7805 || r_type
== R_ARM_LDC_PC_G1
7806 || r_type
== R_ARM_LDC_PC_G2
)
7808 signed_value
= value
- pc
+ signed_addend
;
7810 /* Section base relative. */
7811 signed_value
= value
- sb
+ signed_addend
;
7813 /* Calculate the value of the relevant G_{n-1} to obtain
7814 the residual at that stage. */
7815 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7817 /* Check for overflow. (The absolute value to go in the place must be
7818 divisible by four and, after having been divided by four, must
7819 fit in eight bits.) */
7820 if ((residual
& 0x3) != 0 || residual
>= 0x400)
7822 (*_bfd_error_handler
)
7823 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7824 input_bfd
, input_section
,
7825 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7826 return bfd_reloc_overflow
;
7829 /* Mask out the value and U bit. */
7832 /* Set the U bit if the value to go in the place is non-negative. */
7833 if (signed_value
>= 0)
7836 /* Encode the offset. */
7837 insn
|= residual
>> 2;
7839 bfd_put_32 (input_bfd
, insn
, hit_data
);
7841 return bfd_reloc_ok
;
7844 return bfd_reloc_notsupported
;
7848 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
7850 arm_add_to_rel (bfd
* abfd
,
7852 reloc_howto_type
* howto
,
7853 bfd_signed_vma increment
)
7855 bfd_signed_vma addend
;
7857 if (howto
->type
== R_ARM_THM_CALL
7858 || howto
->type
== R_ARM_THM_JUMP24
)
7860 int upper_insn
, lower_insn
;
7863 upper_insn
= bfd_get_16 (abfd
, address
);
7864 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
7865 upper
= upper_insn
& 0x7ff;
7866 lower
= lower_insn
& 0x7ff;
7868 addend
= (upper
<< 12) | (lower
<< 1);
7869 addend
+= increment
;
7872 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
7873 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
7875 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
7876 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
7882 contents
= bfd_get_32 (abfd
, address
);
7884 /* Get the (signed) value from the instruction. */
7885 addend
= contents
& howto
->src_mask
;
7886 if (addend
& ((howto
->src_mask
+ 1) >> 1))
7888 bfd_signed_vma mask
;
7891 mask
&= ~ howto
->src_mask
;
7895 /* Add in the increment, (which is a byte value). */
7896 switch (howto
->type
)
7899 addend
+= increment
;
7906 addend
<<= howto
->size
;
7907 addend
+= increment
;
7909 /* Should we check for overflow here ? */
7911 /* Drop any undesired bits. */
7912 addend
>>= howto
->rightshift
;
7916 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
7918 bfd_put_32 (abfd
, contents
, address
);
7922 #define IS_ARM_TLS_RELOC(R_TYPE) \
7923 ((R_TYPE) == R_ARM_TLS_GD32 \
7924 || (R_TYPE) == R_ARM_TLS_LDO32 \
7925 || (R_TYPE) == R_ARM_TLS_LDM32 \
7926 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
7927 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
7928 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
7929 || (R_TYPE) == R_ARM_TLS_LE32 \
7930 || (R_TYPE) == R_ARM_TLS_IE32)
7932 /* Relocate an ARM ELF section. */
7935 elf32_arm_relocate_section (bfd
* output_bfd
,
7936 struct bfd_link_info
* info
,
7938 asection
* input_section
,
7939 bfd_byte
* contents
,
7940 Elf_Internal_Rela
* relocs
,
7941 Elf_Internal_Sym
* local_syms
,
7942 asection
** local_sections
)
7944 Elf_Internal_Shdr
*symtab_hdr
;
7945 struct elf_link_hash_entry
**sym_hashes
;
7946 Elf_Internal_Rela
*rel
;
7947 Elf_Internal_Rela
*relend
;
7949 struct elf32_arm_link_hash_table
* globals
;
7951 globals
= elf32_arm_hash_table (info
);
7953 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
7954 sym_hashes
= elf_sym_hashes (input_bfd
);
7957 relend
= relocs
+ input_section
->reloc_count
;
7958 for (; rel
< relend
; rel
++)
7961 reloc_howto_type
* howto
;
7962 unsigned long r_symndx
;
7963 Elf_Internal_Sym
* sym
;
7965 struct elf_link_hash_entry
* h
;
7967 bfd_reloc_status_type r
;
7970 bfd_boolean unresolved_reloc
= FALSE
;
7971 char *error_message
= NULL
;
7973 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7974 r_type
= ELF32_R_TYPE (rel
->r_info
);
7975 r_type
= arm_real_reloc_type (globals
, r_type
);
7977 if ( r_type
== R_ARM_GNU_VTENTRY
7978 || r_type
== R_ARM_GNU_VTINHERIT
)
7981 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
7982 howto
= bfd_reloc
.howto
;
7988 if (r_symndx
< symtab_hdr
->sh_info
)
7990 sym
= local_syms
+ r_symndx
;
7991 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
7992 sec
= local_sections
[r_symndx
];
7993 if (globals
->use_rel
)
7995 relocation
= (sec
->output_section
->vma
7996 + sec
->output_offset
7998 if (!info
->relocatable
7999 && (sec
->flags
& SEC_MERGE
)
8000 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
8003 bfd_vma addend
, value
;
8007 case R_ARM_MOVW_ABS_NC
:
8008 case R_ARM_MOVT_ABS
:
8009 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
8010 addend
= ((value
& 0xf0000) >> 4) | (value
& 0xfff);
8011 addend
= (addend
^ 0x8000) - 0x8000;
8014 case R_ARM_THM_MOVW_ABS_NC
:
8015 case R_ARM_THM_MOVT_ABS
:
8016 value
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
)
8018 value
|= bfd_get_16 (input_bfd
,
8019 contents
+ rel
->r_offset
+ 2);
8020 addend
= ((value
& 0xf7000) >> 4) | (value
& 0xff)
8021 | ((value
& 0x04000000) >> 15);
8022 addend
= (addend
^ 0x8000) - 0x8000;
8026 if (howto
->rightshift
8027 || (howto
->src_mask
& (howto
->src_mask
+ 1)))
8029 (*_bfd_error_handler
)
8030 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
8031 input_bfd
, input_section
,
8032 (long) rel
->r_offset
, howto
->name
);
8036 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
8038 /* Get the (signed) value from the instruction. */
8039 addend
= value
& howto
->src_mask
;
8040 if (addend
& ((howto
->src_mask
+ 1) >> 1))
8042 bfd_signed_vma mask
;
8045 mask
&= ~ howto
->src_mask
;
8053 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
8055 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
8057 /* Cases here must match those in the preceeding
8058 switch statement. */
8061 case R_ARM_MOVW_ABS_NC
:
8062 case R_ARM_MOVT_ABS
:
8063 value
= (value
& 0xfff0f000) | ((addend
& 0xf000) << 4)
8065 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
8068 case R_ARM_THM_MOVW_ABS_NC
:
8069 case R_ARM_THM_MOVT_ABS
:
8070 value
= (value
& 0xfbf08f00) | ((addend
& 0xf700) << 4)
8071 | (addend
& 0xff) | ((addend
& 0x0800) << 15);
8072 bfd_put_16 (input_bfd
, value
>> 16,
8073 contents
+ rel
->r_offset
);
8074 bfd_put_16 (input_bfd
, value
,
8075 contents
+ rel
->r_offset
+ 2);
8079 value
= (value
& ~ howto
->dst_mask
)
8080 | (addend
& howto
->dst_mask
);
8081 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
8087 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
8093 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
8094 r_symndx
, symtab_hdr
, sym_hashes
,
8096 unresolved_reloc
, warned
);
8101 if (sec
!= NULL
&& elf_discarded_section (sec
))
8103 /* For relocs against symbols from removed linkonce sections,
8104 or sections discarded by a linker script, we just want the
8105 section contents zeroed. Avoid any special processing. */
8106 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
8112 if (info
->relocatable
)
8114 /* This is a relocatable link. We don't have to change
8115 anything, unless the reloc is against a section symbol,
8116 in which case we have to adjust according to where the
8117 section symbol winds up in the output section. */
8118 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
8120 if (globals
->use_rel
)
8121 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
8122 howto
, (bfd_signed_vma
) sec
->output_offset
);
8124 rel
->r_addend
+= sec
->output_offset
;
8130 name
= h
->root
.root
.string
;
8133 name
= (bfd_elf_string_from_elf_section
8134 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
8135 if (name
== NULL
|| *name
== '\0')
8136 name
= bfd_section_name (input_bfd
, sec
);
8140 && r_type
!= R_ARM_NONE
8142 || h
->root
.type
== bfd_link_hash_defined
8143 || h
->root
.type
== bfd_link_hash_defweak
)
8144 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
8146 (*_bfd_error_handler
)
8147 ((sym_type
== STT_TLS
8148 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
8149 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
8152 (long) rel
->r_offset
,
8157 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
8158 input_section
, contents
, rel
,
8159 relocation
, info
, sec
, name
,
8160 (h
? ELF_ST_TYPE (h
->type
) :
8161 ELF_ST_TYPE (sym
->st_info
)), h
,
8162 &unresolved_reloc
, &error_message
);
8164 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8165 because such sections are not SEC_ALLOC and thus ld.so will
8166 not process them. */
8167 if (unresolved_reloc
8168 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
8171 (*_bfd_error_handler
)
8172 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
8175 (long) rel
->r_offset
,
8177 h
->root
.root
.string
);
8181 if (r
!= bfd_reloc_ok
)
8185 case bfd_reloc_overflow
:
8186 /* If the overflowing reloc was to an undefined symbol,
8187 we have already printed one error message and there
8188 is no point complaining again. */
8190 h
->root
.type
!= bfd_link_hash_undefined
)
8191 && (!((*info
->callbacks
->reloc_overflow
)
8192 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
8193 (bfd_vma
) 0, input_bfd
, input_section
,
8198 case bfd_reloc_undefined
:
8199 if (!((*info
->callbacks
->undefined_symbol
)
8200 (info
, name
, input_bfd
, input_section
,
8201 rel
->r_offset
, TRUE
)))
8205 case bfd_reloc_outofrange
:
8206 error_message
= _("out of range");
8209 case bfd_reloc_notsupported
:
8210 error_message
= _("unsupported relocation");
8213 case bfd_reloc_dangerous
:
8214 /* error_message should already be set. */
8218 error_message
= _("unknown error");
8222 BFD_ASSERT (error_message
!= NULL
);
8223 if (!((*info
->callbacks
->reloc_dangerous
)
8224 (info
, error_message
, input_bfd
, input_section
,
8235 /* Set the right machine number. */
8238 elf32_arm_object_p (bfd
*abfd
)
8242 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
8244 if (mach
!= bfd_mach_arm_unknown
)
8245 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
8247 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
8248 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
8251 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
8256 /* Function to keep ARM specific flags in the ELF header. */
8259 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
8261 if (elf_flags_init (abfd
)
8262 && elf_elfheader (abfd
)->e_flags
!= flags
)
8264 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
8266 if (flags
& EF_ARM_INTERWORK
)
8267 (*_bfd_error_handler
)
8268 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
8272 (_("Warning: Clearing the interworking flag of %B due to outside request"),
8278 elf_elfheader (abfd
)->e_flags
= flags
;
8279 elf_flags_init (abfd
) = TRUE
;
8285 /* Copy backend specific data from one object module to another. */
8288 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
8293 if (! is_arm_elf (ibfd
) || ! is_arm_elf (obfd
))
8296 in_flags
= elf_elfheader (ibfd
)->e_flags
;
8297 out_flags
= elf_elfheader (obfd
)->e_flags
;
8299 if (elf_flags_init (obfd
)
8300 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
8301 && in_flags
!= out_flags
)
8303 /* Cannot mix APCS26 and APCS32 code. */
8304 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
8307 /* Cannot mix float APCS and non-float APCS code. */
8308 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
8311 /* If the src and dest have different interworking flags
8312 then turn off the interworking bit. */
8313 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
8315 if (out_flags
& EF_ARM_INTERWORK
)
8317 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
8320 in_flags
&= ~EF_ARM_INTERWORK
;
8323 /* Likewise for PIC, though don't warn for this case. */
8324 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
8325 in_flags
&= ~EF_ARM_PIC
;
8328 elf_elfheader (obfd
)->e_flags
= in_flags
;
8329 elf_flags_init (obfd
) = TRUE
;
8331 /* Also copy the EI_OSABI field. */
8332 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
8333 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
8335 /* Copy object attributes. */
8336 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
8341 /* Values for Tag_ABI_PCS_R9_use. */
8350 /* Values for Tag_ABI_PCS_RW_data. */
8353 AEABI_PCS_RW_data_absolute
,
8354 AEABI_PCS_RW_data_PCrel
,
8355 AEABI_PCS_RW_data_SBrel
,
8356 AEABI_PCS_RW_data_unused
8359 /* Values for Tag_ABI_enum_size. */
8365 AEABI_enum_forced_wide
8368 /* Determine whether an object attribute tag takes an integer, a
8372 elf32_arm_obj_attrs_arg_type (int tag
)
8374 if (tag
== Tag_compatibility
)
8375 return ATTR_TYPE_FLAG_INT_VAL
| ATTR_TYPE_FLAG_STR_VAL
;
8376 else if (tag
== Tag_nodefaults
)
8377 return ATTR_TYPE_FLAG_INT_VAL
| ATTR_TYPE_FLAG_NO_DEFAULT
;
8378 else if (tag
== Tag_CPU_raw_name
|| tag
== Tag_CPU_name
)
8379 return ATTR_TYPE_FLAG_STR_VAL
;
8381 return ATTR_TYPE_FLAG_INT_VAL
;
8383 return (tag
& 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL
: ATTR_TYPE_FLAG_INT_VAL
;
8386 /* The ABI defines that Tag_conformance should be emitted first, and that
8387 Tag_nodefaults should be second (if either is defined). This sets those
8388 two positions, and bumps up the position of all the remaining tags to
8391 elf32_arm_obj_attrs_order (int num
)
8394 return Tag_conformance
;
8396 return Tag_nodefaults
;
8397 if ((num
- 2) < Tag_nodefaults
)
8399 if ((num
- 1) < Tag_conformance
)
8404 /* Read the architecture from the Tag_also_compatible_with attribute, if any.
8405 Returns -1 if no architecture could be read. */
8408 get_secondary_compatible_arch (bfd
*abfd
)
8410 obj_attribute
*attr
=
8411 &elf_known_obj_attributes_proc (abfd
)[Tag_also_compatible_with
];
8413 /* Note: the tag and its argument below are uleb128 values, though
8414 currently-defined values fit in one byte for each. */
8416 && attr
->s
[0] == Tag_CPU_arch
8417 && (attr
->s
[1] & 128) != 128
8421 /* This tag is "safely ignorable", so don't complain if it looks funny. */
8425 /* Set, or unset, the architecture of the Tag_also_compatible_with attribute.
8426 The tag is removed if ARCH is -1. */
8429 set_secondary_compatible_arch (bfd
*abfd
, int arch
)
8431 obj_attribute
*attr
=
8432 &elf_known_obj_attributes_proc (abfd
)[Tag_also_compatible_with
];
8440 /* Note: the tag and its argument below are uleb128 values, though
8441 currently-defined values fit in one byte for each. */
8443 attr
->s
= bfd_alloc (abfd
, 3);
8444 attr
->s
[0] = Tag_CPU_arch
;
8449 /* Combine two values for Tag_CPU_arch, taking secondary compatibility tags
8453 tag_cpu_arch_combine (bfd
*ibfd
, int oldtag
, int *secondary_compat_out
,
8454 int newtag
, int secondary_compat
)
8456 #define T(X) TAG_CPU_ARCH_##X
8457 int tagl
, tagh
, result
;
8460 T(V6T2
), /* PRE_V4. */
8464 T(V6T2
), /* V5TE. */
8465 T(V6T2
), /* V5TEJ. */
8472 T(V6K
), /* PRE_V4. */
8477 T(V6K
), /* V5TEJ. */
8479 T(V6KZ
), /* V6KZ. */
8485 T(V7
), /* PRE_V4. */
8504 T(V6K
), /* V5TEJ. */
8506 T(V6KZ
), /* V6KZ. */
8519 T(V6K
), /* V5TEJ. */
8521 T(V6KZ
), /* V6KZ. */
8525 T(V6S_M
), /* V6_M. */
8526 T(V6S_M
) /* V6S_M. */
8528 const int v4t_plus_v6_m
[] =
8534 T(V5TE
), /* V5TE. */
8535 T(V5TEJ
), /* V5TEJ. */
8537 T(V6KZ
), /* V6KZ. */
8538 T(V6T2
), /* V6T2. */
8541 T(V6_M
), /* V6_M. */
8542 T(V6S_M
), /* V6S_M. */
8543 T(V4T_PLUS_V6_M
) /* V4T plus V6_M. */
8552 /* Pseudo-architecture. */
8556 /* Check we've not got a higher architecture than we know about. */
8558 if (oldtag
>= MAX_TAG_CPU_ARCH
|| newtag
>= MAX_TAG_CPU_ARCH
)
8560 _bfd_error_handler (_("error: %B: Unknown CPU architecture"), ibfd
);
8564 /* Override old tag if we have a Tag_also_compatible_with on the output. */
8566 if ((oldtag
== T(V6_M
) && *secondary_compat_out
== T(V4T
))
8567 || (oldtag
== T(V4T
) && *secondary_compat_out
== T(V6_M
)))
8568 oldtag
= T(V4T_PLUS_V6_M
);
8570 /* And override the new tag if we have a Tag_also_compatible_with on the
8573 if ((newtag
== T(V6_M
) && secondary_compat
== T(V4T
))
8574 || (newtag
== T(V4T
) && secondary_compat
== T(V6_M
)))
8575 newtag
= T(V4T_PLUS_V6_M
);
8577 tagl
= (oldtag
< newtag
) ? oldtag
: newtag
;
8578 result
= tagh
= (oldtag
> newtag
) ? oldtag
: newtag
;
8580 /* Architectures before V6KZ add features monotonically. */
8581 if (tagh
<= TAG_CPU_ARCH_V6KZ
)
8584 result
= comb
[tagh
- T(V6T2
)][tagl
];
8586 /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M)
8587 as the canonical version. */
8588 if (result
== T(V4T_PLUS_V6_M
))
8591 *secondary_compat_out
= T(V6_M
);
8594 *secondary_compat_out
= -1;
8598 _bfd_error_handler (_("error: %B: Conflicting CPU architectures %d/%d"),
8599 ibfd
, oldtag
, newtag
);
8607 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
8608 are conflicting attributes. */
8611 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
8613 obj_attribute
*in_attr
;
8614 obj_attribute
*out_attr
;
8615 obj_attribute_list
*in_list
;
8616 obj_attribute_list
*out_list
;
8617 obj_attribute_list
**out_listp
;
8618 /* Some tags have 0 = don't care, 1 = strong requirement,
8619 2 = weak requirement. */
8620 static const int order_021
[3] = {0, 2, 1};
8621 /* For use with Tag_VFP_arch. */
8622 static const int order_01243
[5] = {0, 1, 2, 4, 3};
8624 bfd_boolean result
= TRUE
;
8626 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
8628 /* This is the first object. Copy the attributes. */
8629 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
8631 /* Use the Tag_null value to indicate the attributes have been
8633 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
8638 in_attr
= elf_known_obj_attributes_proc (ibfd
);
8639 out_attr
= elf_known_obj_attributes_proc (obfd
);
8640 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
8641 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
8643 /* Ignore mismatches if the object doesn't use floating point. */
8644 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
8645 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
8646 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
8649 (_("error: %B uses VFP register arguments, %B does not"),
8655 for (i
= 4; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
8657 /* Merge this attribute with existing attributes. */
8660 case Tag_CPU_raw_name
:
8662 /* These are merged after Tag_CPU_arch. */
8665 case Tag_ABI_optimization_goals
:
8666 case Tag_ABI_FP_optimization_goals
:
8667 /* Use the first value seen. */
8672 int secondary_compat
= -1, secondary_compat_out
= -1;
8673 unsigned int saved_out_attr
= out_attr
[i
].i
;
8674 static const char *name_table
[] = {
8675 /* These aren't real CPU names, but we can't guess
8676 that from the architecture version alone. */
8692 /* Merge Tag_CPU_arch and Tag_also_compatible_with. */
8693 secondary_compat
= get_secondary_compatible_arch (ibfd
);
8694 secondary_compat_out
= get_secondary_compatible_arch (obfd
);
8695 out_attr
[i
].i
= tag_cpu_arch_combine (ibfd
, out_attr
[i
].i
,
8696 &secondary_compat_out
,
8699 set_secondary_compatible_arch (obfd
, secondary_compat_out
);
8701 /* Merge Tag_CPU_name and Tag_CPU_raw_name. */
8702 if (out_attr
[i
].i
== saved_out_attr
)
8703 ; /* Leave the names alone. */
8704 else if (out_attr
[i
].i
== in_attr
[i
].i
)
8706 /* The output architecture has been changed to match the
8707 input architecture. Use the input names. */
8708 out_attr
[Tag_CPU_name
].s
= in_attr
[Tag_CPU_name
].s
8709 ? _bfd_elf_attr_strdup (obfd
, in_attr
[Tag_CPU_name
].s
)
8711 out_attr
[Tag_CPU_raw_name
].s
= in_attr
[Tag_CPU_raw_name
].s
8712 ? _bfd_elf_attr_strdup (obfd
, in_attr
[Tag_CPU_raw_name
].s
)
8717 out_attr
[Tag_CPU_name
].s
= NULL
;
8718 out_attr
[Tag_CPU_raw_name
].s
= NULL
;
8721 /* If we still don't have a value for Tag_CPU_name,
8722 make one up now. Tag_CPU_raw_name remains blank. */
8723 if (out_attr
[Tag_CPU_name
].s
== NULL
8724 && out_attr
[i
].i
< ARRAY_SIZE (name_table
))
8725 out_attr
[Tag_CPU_name
].s
=
8726 _bfd_elf_attr_strdup (obfd
, name_table
[out_attr
[i
].i
]);
8730 case Tag_ARM_ISA_use
:
8731 case Tag_THUMB_ISA_use
:
8733 case Tag_Advanced_SIMD_arch
:
8734 /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */
8735 case Tag_ABI_FP_rounding
:
8736 case Tag_ABI_FP_exceptions
:
8737 case Tag_ABI_FP_user_exceptions
:
8738 case Tag_ABI_FP_number_model
:
8739 case Tag_VFP_HP_extension
:
8740 case Tag_CPU_unaligned_access
:
8742 case Tag_Virtualization_use
:
8743 case Tag_MPextension_use
:
8744 /* Use the largest value specified. */
8745 if (in_attr
[i
].i
> out_attr
[i
].i
)
8746 out_attr
[i
].i
= in_attr
[i
].i
;
8749 case Tag_ABI_align8_preserved
:
8750 case Tag_ABI_PCS_RO_data
:
8751 /* Use the smallest value specified. */
8752 if (in_attr
[i
].i
< out_attr
[i
].i
)
8753 out_attr
[i
].i
= in_attr
[i
].i
;
8756 case Tag_ABI_align8_needed
:
8757 if ((in_attr
[i
].i
> 0 || out_attr
[i
].i
> 0)
8758 && (in_attr
[Tag_ABI_align8_preserved
].i
== 0
8759 || out_attr
[Tag_ABI_align8_preserved
].i
== 0))
8761 /* This error message should be enabled once all non-conformant
8762 binaries in the toolchain have had the attributes set
8765 (_("error: %B: 8-byte data alignment conflicts with %B"),
8770 case Tag_ABI_FP_denormal
:
8771 case Tag_ABI_PCS_GOT_use
:
8772 /* Use the "greatest" from the sequence 0, 2, 1, or the largest
8773 value if greater than 2 (for future-proofing). */
8774 if ((in_attr
[i
].i
> 2 && in_attr
[i
].i
> out_attr
[i
].i
)
8775 || (in_attr
[i
].i
<= 2 && out_attr
[i
].i
<= 2
8776 && order_021
[in_attr
[i
].i
] > order_021
[out_attr
[i
].i
]))
8777 out_attr
[i
].i
= in_attr
[i
].i
;
8781 case Tag_CPU_arch_profile
:
8782 if (out_attr
[i
].i
!= in_attr
[i
].i
)
8784 /* 0 will merge with anything.
8785 'A' and 'S' merge to 'A'.
8786 'R' and 'S' merge to 'R'.
8787 'M' and 'A|R|S' is an error. */
8788 if (out_attr
[i
].i
== 0
8789 || (out_attr
[i
].i
== 'S'
8790 && (in_attr
[i
].i
== 'A' || in_attr
[i
].i
== 'R')))
8791 out_attr
[i
].i
= in_attr
[i
].i
;
8792 else if (in_attr
[i
].i
== 0
8793 || (in_attr
[i
].i
== 'S'
8794 && (out_attr
[i
].i
== 'A' || out_attr
[i
].i
== 'R')))
8799 (_("error: %B: Conflicting architecture profiles %c/%c"),
8801 in_attr
[i
].i
? in_attr
[i
].i
: '0',
8802 out_attr
[i
].i
? out_attr
[i
].i
: '0');
8808 /* Use the "greatest" from the sequence 0, 1, 2, 4, 3, or the
8809 largest value if greater than 4 (for future-proofing). */
8810 if ((in_attr
[i
].i
> 4 && in_attr
[i
].i
> out_attr
[i
].i
)
8811 || (in_attr
[i
].i
<= 4 && out_attr
[i
].i
<= 4
8812 && order_01243
[in_attr
[i
].i
] > order_01243
[out_attr
[i
].i
]))
8813 out_attr
[i
].i
= in_attr
[i
].i
;
8815 case Tag_PCS_config
:
8816 if (out_attr
[i
].i
== 0)
8817 out_attr
[i
].i
= in_attr
[i
].i
;
8818 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
8820 /* It's sometimes ok to mix different configs, so this is only
8823 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
8826 case Tag_ABI_PCS_R9_use
:
8827 if (in_attr
[i
].i
!= out_attr
[i
].i
8828 && out_attr
[i
].i
!= AEABI_R9_unused
8829 && in_attr
[i
].i
!= AEABI_R9_unused
)
8832 (_("error: %B: Conflicting use of R9"), ibfd
);
8835 if (out_attr
[i
].i
== AEABI_R9_unused
)
8836 out_attr
[i
].i
= in_attr
[i
].i
;
8838 case Tag_ABI_PCS_RW_data
:
8839 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
8840 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
8841 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
8844 (_("error: %B: SB relative addressing conflicts with use of R9"),
8848 /* Use the smallest value specified. */
8849 if (in_attr
[i
].i
< out_attr
[i
].i
)
8850 out_attr
[i
].i
= in_attr
[i
].i
;
8852 case Tag_ABI_PCS_wchar_t
:
8853 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
8854 && !elf_arm_tdata (obfd
)->no_wchar_size_warning
)
8857 (_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"),
8858 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
8860 else if (in_attr
[i
].i
&& !out_attr
[i
].i
)
8861 out_attr
[i
].i
= in_attr
[i
].i
;
8863 case Tag_ABI_enum_size
:
8864 if (in_attr
[i
].i
!= AEABI_enum_unused
)
8866 if (out_attr
[i
].i
== AEABI_enum_unused
8867 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
8869 /* The existing object is compatible with anything.
8870 Use whatever requirements the new object has. */
8871 out_attr
[i
].i
= in_attr
[i
].i
;
8873 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
8874 && out_attr
[i
].i
!= in_attr
[i
].i
8875 && !elf_arm_tdata (obfd
)->no_enum_size_warning
)
8877 static const char *aeabi_enum_names
[] =
8878 { "", "variable-size", "32-bit", "" };
8879 const char *in_name
=
8880 in_attr
[i
].i
< ARRAY_SIZE(aeabi_enum_names
)
8881 ? aeabi_enum_names
[in_attr
[i
].i
]
8883 const char *out_name
=
8884 out_attr
[i
].i
< ARRAY_SIZE(aeabi_enum_names
)
8885 ? aeabi_enum_names
[out_attr
[i
].i
]
8888 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
8889 ibfd
, in_name
, out_name
);
8893 case Tag_ABI_VFP_args
:
8896 case Tag_ABI_WMMX_args
:
8897 if (in_attr
[i
].i
!= out_attr
[i
].i
)
8900 (_("error: %B uses iWMMXt register arguments, %B does not"),
8905 case Tag_compatibility
:
8906 /* Merged in target-independent code. */
8908 case Tag_ABI_HardFP_use
:
8909 /* 1 (SP) and 2 (DP) conflict, so combine to 3 (SP & DP). */
8910 if ((in_attr
[i
].i
== 1 && out_attr
[i
].i
== 2)
8911 || (in_attr
[i
].i
== 2 && out_attr
[i
].i
== 1))
8913 else if (in_attr
[i
].i
> out_attr
[i
].i
)
8914 out_attr
[i
].i
= in_attr
[i
].i
;
8916 case Tag_ABI_FP_16bit_format
:
8917 if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
8919 if (in_attr
[i
].i
!= out_attr
[i
].i
)
8922 (_("error: fp16 format mismatch between %B and %B"),
8927 if (in_attr
[i
].i
!= 0)
8928 out_attr
[i
].i
= in_attr
[i
].i
;
8931 case Tag_nodefaults
:
8932 /* This tag is set if it exists, but the value is unused (and is
8933 typically zero). We don't actually need to do anything here -
8934 the merge happens automatically when the type flags are merged
8937 case Tag_also_compatible_with
:
8938 /* Already done in Tag_CPU_arch. */
8940 case Tag_conformance
:
8941 /* Keep the attribute if it matches. Throw it away otherwise.
8942 No attribute means no claim to conform. */
8943 if (!in_attr
[i
].s
|| !out_attr
[i
].s
8944 || strcmp (in_attr
[i
].s
, out_attr
[i
].s
) != 0)
8945 out_attr
[i
].s
= NULL
;
8950 bfd
*err_bfd
= NULL
;
8952 /* The "known_obj_attributes" table does contain some undefined
8953 attributes. Ensure that there are unused. */
8954 if (out_attr
[i
].i
!= 0 || out_attr
[i
].s
!= NULL
)
8956 else if (in_attr
[i
].i
!= 0 || in_attr
[i
].s
!= NULL
)
8959 if (err_bfd
!= NULL
)
8961 /* Attribute numbers >=64 (mod 128) can be safely ignored. */
8965 (_("%B: Unknown mandatory EABI object attribute %d"),
8967 bfd_set_error (bfd_error_bad_value
);
8973 (_("Warning: %B: Unknown EABI object attribute %d"),
8978 /* Only pass on attributes that match in both inputs. */
8979 if (in_attr
[i
].i
!= out_attr
[i
].i
8980 || in_attr
[i
].s
!= out_attr
[i
].s
8981 || (in_attr
[i
].s
!= NULL
&& out_attr
[i
].s
!= NULL
8982 && strcmp (in_attr
[i
].s
, out_attr
[i
].s
) != 0))
8985 out_attr
[i
].s
= NULL
;
8990 /* If out_attr was copied from in_attr then it won't have a type yet. */
8991 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
8992 out_attr
[i
].type
= in_attr
[i
].type
;
8995 /* Merge Tag_compatibility attributes and any common GNU ones. */
8996 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
8998 /* Check for any attributes not known on ARM. */
8999 in_list
= elf_other_obj_attributes_proc (ibfd
);
9000 out_listp
= &elf_other_obj_attributes_proc (obfd
);
9001 out_list
= *out_listp
;
9003 for (; in_list
|| out_list
; )
9005 bfd
*err_bfd
= NULL
;
9008 /* The tags for each list are in numerical order. */
9009 /* If the tags are equal, then merge. */
9010 if (out_list
&& (!in_list
|| in_list
->tag
> out_list
->tag
))
9012 /* This attribute only exists in obfd. We can't merge, and we don't
9013 know what the tag means, so delete it. */
9015 err_tag
= out_list
->tag
;
9016 *out_listp
= out_list
->next
;
9017 out_list
= *out_listp
;
9019 else if (in_list
&& (!out_list
|| in_list
->tag
< out_list
->tag
))
9021 /* This attribute only exists in ibfd. We can't merge, and we don't
9022 know what the tag means, so ignore it. */
9024 err_tag
= in_list
->tag
;
9025 in_list
= in_list
->next
;
9027 else /* The tags are equal. */
9029 /* As present, all attributes in the list are unknown, and
9030 therefore can't be merged meaningfully. */
9032 err_tag
= out_list
->tag
;
9034 /* Only pass on attributes that match in both inputs. */
9035 if (in_list
->attr
.i
!= out_list
->attr
.i
9036 || in_list
->attr
.s
!= out_list
->attr
.s
9037 || (in_list
->attr
.s
&& out_list
->attr
.s
9038 && strcmp (in_list
->attr
.s
, out_list
->attr
.s
) != 0))
9040 /* No match. Delete the attribute. */
9041 *out_listp
= out_list
->next
;
9042 out_list
= *out_listp
;
9046 /* Matched. Keep the attribute and move to the next. */
9047 out_list
= out_list
->next
;
9048 in_list
= in_list
->next
;
9054 /* Attribute numbers >=64 (mod 128) can be safely ignored. */
9055 if ((err_tag
& 127) < 64)
9058 (_("%B: Unknown mandatory EABI object attribute %d"),
9060 bfd_set_error (bfd_error_bad_value
);
9066 (_("Warning: %B: Unknown EABI object attribute %d"),
9075 /* Return TRUE if the two EABI versions are incompatible. */
9078 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
9080 /* v4 and v5 are the same spec before and after it was released,
9081 so allow mixing them. */
9082 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
9083 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
9086 return (iver
== over
);
9089 /* Merge backend specific data from an object file to the output
9090 object file when linking. */
9093 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
9097 bfd_boolean flags_compatible
= TRUE
;
9100 /* Check if we have the same endianess. */
9101 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
9104 if (! is_arm_elf (ibfd
) || ! is_arm_elf (obfd
))
9107 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
9110 /* The input BFD must have had its flags initialised. */
9111 /* The following seems bogus to me -- The flags are initialized in
9112 the assembler but I don't think an elf_flags_init field is
9113 written into the object. */
9114 /* BFD_ASSERT (elf_flags_init (ibfd)); */
9116 in_flags
= elf_elfheader (ibfd
)->e_flags
;
9117 out_flags
= elf_elfheader (obfd
)->e_flags
;
9119 /* In theory there is no reason why we couldn't handle this. However
9120 in practice it isn't even close to working and there is no real
9121 reason to want it. */
9122 if (EF_ARM_EABI_VERSION (in_flags
) >= EF_ARM_EABI_VER4
9123 && !(ibfd
->flags
& DYNAMIC
)
9124 && (in_flags
& EF_ARM_BE8
))
9126 _bfd_error_handler (_("error: %B is already in final BE8 format"),
9131 if (!elf_flags_init (obfd
))
9133 /* If the input is the default architecture and had the default
9134 flags then do not bother setting the flags for the output
9135 architecture, instead allow future merges to do this. If no
9136 future merges ever set these flags then they will retain their
9137 uninitialised values, which surprise surprise, correspond
9138 to the default values. */
9139 if (bfd_get_arch_info (ibfd
)->the_default
9140 && elf_elfheader (ibfd
)->e_flags
== 0)
9143 elf_flags_init (obfd
) = TRUE
;
9144 elf_elfheader (obfd
)->e_flags
= in_flags
;
9146 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
9147 && bfd_get_arch_info (obfd
)->the_default
)
9148 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
9153 /* Determine what should happen if the input ARM architecture
9154 does not match the output ARM architecture. */
9155 if (! bfd_arm_merge_machines (ibfd
, obfd
))
9158 /* Identical flags must be compatible. */
9159 if (in_flags
== out_flags
)
9162 /* Check to see if the input BFD actually contains any sections. If
9163 not, its flags may not have been initialised either, but it
9164 cannot actually cause any incompatiblity. Do not short-circuit
9165 dynamic objects; their section list may be emptied by
9166 elf_link_add_object_symbols.
9168 Also check to see if there are no code sections in the input.
9169 In this case there is no need to check for code specific flags.
9170 XXX - do we need to worry about floating-point format compatability
9171 in data sections ? */
9172 if (!(ibfd
->flags
& DYNAMIC
))
9174 bfd_boolean null_input_bfd
= TRUE
;
9175 bfd_boolean only_data_sections
= TRUE
;
9177 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9179 /* Ignore synthetic glue sections. */
9180 if (strcmp (sec
->name
, ".glue_7")
9181 && strcmp (sec
->name
, ".glue_7t"))
9183 if ((bfd_get_section_flags (ibfd
, sec
)
9184 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
9185 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
9186 only_data_sections
= FALSE
;
9188 null_input_bfd
= FALSE
;
9193 if (null_input_bfd
|| only_data_sections
)
9197 /* Complain about various flag mismatches. */
9198 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
9199 EF_ARM_EABI_VERSION (out_flags
)))
9202 (_("error: Source object %B has EABI version %d, but target %B has EABI version %d"),
9204 (in_flags
& EF_ARM_EABIMASK
) >> 24,
9205 (out_flags
& EF_ARM_EABIMASK
) >> 24);
9209 /* Not sure what needs to be checked for EABI versions >= 1. */
9210 /* VxWorks libraries do not use these flags. */
9211 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
9212 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
9213 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
9215 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
9218 (_("error: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
9220 in_flags
& EF_ARM_APCS_26
? 26 : 32,
9221 out_flags
& EF_ARM_APCS_26
? 26 : 32);
9222 flags_compatible
= FALSE
;
9225 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
9227 if (in_flags
& EF_ARM_APCS_FLOAT
)
9229 (_("error: %B passes floats in float registers, whereas %B passes them in integer registers"),
9233 (_("error: %B passes floats in integer registers, whereas %B passes them in float registers"),
9236 flags_compatible
= FALSE
;
9239 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
9241 if (in_flags
& EF_ARM_VFP_FLOAT
)
9243 (_("error: %B uses VFP instructions, whereas %B does not"),
9247 (_("error: %B uses FPA instructions, whereas %B does not"),
9250 flags_compatible
= FALSE
;
9253 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
9255 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
9257 (_("error: %B uses Maverick instructions, whereas %B does not"),
9261 (_("error: %B does not use Maverick instructions, whereas %B does"),
9264 flags_compatible
= FALSE
;
9267 #ifdef EF_ARM_SOFT_FLOAT
9268 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
9270 /* We can allow interworking between code that is VFP format
9271 layout, and uses either soft float or integer regs for
9272 passing floating point arguments and results. We already
9273 know that the APCS_FLOAT flags match; similarly for VFP
9275 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
9276 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
9278 if (in_flags
& EF_ARM_SOFT_FLOAT
)
9280 (_("error: %B uses software FP, whereas %B uses hardware FP"),
9284 (_("error: %B uses hardware FP, whereas %B uses software FP"),
9287 flags_compatible
= FALSE
;
9292 /* Interworking mismatch is only a warning. */
9293 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
9295 if (in_flags
& EF_ARM_INTERWORK
)
9298 (_("Warning: %B supports interworking, whereas %B does not"),
9304 (_("Warning: %B does not support interworking, whereas %B does"),
9310 return flags_compatible
;
9313 /* Display the flags field. */
9316 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
9318 FILE * file
= (FILE *) ptr
;
9319 unsigned long flags
;
9321 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
9323 /* Print normal ELF private data. */
9324 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
9326 flags
= elf_elfheader (abfd
)->e_flags
;
9327 /* Ignore init flag - it may not be set, despite the flags field
9328 containing valid data. */
9330 /* xgettext:c-format */
9331 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
9333 switch (EF_ARM_EABI_VERSION (flags
))
9335 case EF_ARM_EABI_UNKNOWN
:
9336 /* The following flag bits are GNU extensions and not part of the
9337 official ARM ELF extended ABI. Hence they are only decoded if
9338 the EABI version is not set. */
9339 if (flags
& EF_ARM_INTERWORK
)
9340 fprintf (file
, _(" [interworking enabled]"));
9342 if (flags
& EF_ARM_APCS_26
)
9343 fprintf (file
, " [APCS-26]");
9345 fprintf (file
, " [APCS-32]");
9347 if (flags
& EF_ARM_VFP_FLOAT
)
9348 fprintf (file
, _(" [VFP float format]"));
9349 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
9350 fprintf (file
, _(" [Maverick float format]"));
9352 fprintf (file
, _(" [FPA float format]"));
9354 if (flags
& EF_ARM_APCS_FLOAT
)
9355 fprintf (file
, _(" [floats passed in float registers]"));
9357 if (flags
& EF_ARM_PIC
)
9358 fprintf (file
, _(" [position independent]"));
9360 if (flags
& EF_ARM_NEW_ABI
)
9361 fprintf (file
, _(" [new ABI]"));
9363 if (flags
& EF_ARM_OLD_ABI
)
9364 fprintf (file
, _(" [old ABI]"));
9366 if (flags
& EF_ARM_SOFT_FLOAT
)
9367 fprintf (file
, _(" [software FP]"));
9369 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
9370 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
9371 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
9372 | EF_ARM_MAVERICK_FLOAT
);
9375 case EF_ARM_EABI_VER1
:
9376 fprintf (file
, _(" [Version1 EABI]"));
9378 if (flags
& EF_ARM_SYMSARESORTED
)
9379 fprintf (file
, _(" [sorted symbol table]"));
9381 fprintf (file
, _(" [unsorted symbol table]"));
9383 flags
&= ~ EF_ARM_SYMSARESORTED
;
9386 case EF_ARM_EABI_VER2
:
9387 fprintf (file
, _(" [Version2 EABI]"));
9389 if (flags
& EF_ARM_SYMSARESORTED
)
9390 fprintf (file
, _(" [sorted symbol table]"));
9392 fprintf (file
, _(" [unsorted symbol table]"));
9394 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
9395 fprintf (file
, _(" [dynamic symbols use segment index]"));
9397 if (flags
& EF_ARM_MAPSYMSFIRST
)
9398 fprintf (file
, _(" [mapping symbols precede others]"));
9400 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
9401 | EF_ARM_MAPSYMSFIRST
);
9404 case EF_ARM_EABI_VER3
:
9405 fprintf (file
, _(" [Version3 EABI]"));
9408 case EF_ARM_EABI_VER4
:
9409 fprintf (file
, _(" [Version4 EABI]"));
9412 case EF_ARM_EABI_VER5
:
9413 fprintf (file
, _(" [Version5 EABI]"));
9415 if (flags
& EF_ARM_BE8
)
9416 fprintf (file
, _(" [BE8]"));
9418 if (flags
& EF_ARM_LE8
)
9419 fprintf (file
, _(" [LE8]"));
9421 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
9425 fprintf (file
, _(" <EABI version unrecognised>"));
9429 flags
&= ~ EF_ARM_EABIMASK
;
9431 if (flags
& EF_ARM_RELEXEC
)
9432 fprintf (file
, _(" [relocatable executable]"));
9434 if (flags
& EF_ARM_HASENTRY
)
9435 fprintf (file
, _(" [has entry point]"));
9437 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
9440 fprintf (file
, _("<Unrecognised flag bits set>"));
9448 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
9450 switch (ELF_ST_TYPE (elf_sym
->st_info
))
9453 return ELF_ST_TYPE (elf_sym
->st_info
);
9456 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
9457 This allows us to distinguish between data used by Thumb instructions
9458 and non-data (which is probably code) inside Thumb regions of an
9460 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
9461 return ELF_ST_TYPE (elf_sym
->st_info
);
9472 elf32_arm_gc_mark_hook (asection
*sec
,
9473 struct bfd_link_info
*info
,
9474 Elf_Internal_Rela
*rel
,
9475 struct elf_link_hash_entry
*h
,
9476 Elf_Internal_Sym
*sym
)
9479 switch (ELF32_R_TYPE (rel
->r_info
))
9481 case R_ARM_GNU_VTINHERIT
:
9482 case R_ARM_GNU_VTENTRY
:
9486 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
9489 /* Update the got entry reference counts for the section being removed. */
9492 elf32_arm_gc_sweep_hook (bfd
* abfd
,
9493 struct bfd_link_info
* info
,
9495 const Elf_Internal_Rela
* relocs
)
9497 Elf_Internal_Shdr
*symtab_hdr
;
9498 struct elf_link_hash_entry
**sym_hashes
;
9499 bfd_signed_vma
*local_got_refcounts
;
9500 const Elf_Internal_Rela
*rel
, *relend
;
9501 struct elf32_arm_link_hash_table
* globals
;
9503 if (info
->relocatable
)
9506 globals
= elf32_arm_hash_table (info
);
9508 elf_section_data (sec
)->local_dynrel
= NULL
;
9510 symtab_hdr
= & elf_symtab_hdr (abfd
);
9511 sym_hashes
= elf_sym_hashes (abfd
);
9512 local_got_refcounts
= elf_local_got_refcounts (abfd
);
9514 check_use_blx (globals
);
9516 relend
= relocs
+ sec
->reloc_count
;
9517 for (rel
= relocs
; rel
< relend
; rel
++)
9519 unsigned long r_symndx
;
9520 struct elf_link_hash_entry
*h
= NULL
;
9523 r_symndx
= ELF32_R_SYM (rel
->r_info
);
9524 if (r_symndx
>= symtab_hdr
->sh_info
)
9526 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
9527 while (h
->root
.type
== bfd_link_hash_indirect
9528 || h
->root
.type
== bfd_link_hash_warning
)
9529 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9532 r_type
= ELF32_R_TYPE (rel
->r_info
);
9533 r_type
= arm_real_reloc_type (globals
, r_type
);
9537 case R_ARM_GOT_PREL
:
9538 case R_ARM_TLS_GD32
:
9539 case R_ARM_TLS_IE32
:
9542 if (h
->got
.refcount
> 0)
9543 h
->got
.refcount
-= 1;
9545 else if (local_got_refcounts
!= NULL
)
9547 if (local_got_refcounts
[r_symndx
] > 0)
9548 local_got_refcounts
[r_symndx
] -= 1;
9552 case R_ARM_TLS_LDM32
:
9553 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
9557 case R_ARM_ABS32_NOI
:
9559 case R_ARM_REL32_NOI
:
9565 case R_ARM_THM_CALL
:
9566 case R_ARM_THM_JUMP24
:
9567 case R_ARM_THM_JUMP19
:
9568 case R_ARM_MOVW_ABS_NC
:
9569 case R_ARM_MOVT_ABS
:
9570 case R_ARM_MOVW_PREL_NC
:
9571 case R_ARM_MOVT_PREL
:
9572 case R_ARM_THM_MOVW_ABS_NC
:
9573 case R_ARM_THM_MOVT_ABS
:
9574 case R_ARM_THM_MOVW_PREL_NC
:
9575 case R_ARM_THM_MOVT_PREL
:
9576 /* Should the interworking branches be here also? */
9580 struct elf32_arm_link_hash_entry
*eh
;
9581 struct elf32_arm_relocs_copied
**pp
;
9582 struct elf32_arm_relocs_copied
*p
;
9584 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9586 if (h
->plt
.refcount
> 0)
9588 h
->plt
.refcount
-= 1;
9589 if (r_type
== R_ARM_THM_CALL
)
9590 eh
->plt_maybe_thumb_refcount
--;
9592 if (r_type
== R_ARM_THM_JUMP24
9593 || r_type
== R_ARM_THM_JUMP19
)
9594 eh
->plt_thumb_refcount
--;
9597 if (r_type
== R_ARM_ABS32
9598 || r_type
== R_ARM_REL32
9599 || r_type
== R_ARM_ABS32_NOI
9600 || r_type
== R_ARM_REL32_NOI
)
9602 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
9604 if (p
->section
== sec
)
9607 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
9608 || ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32_NOI
)
9626 /* Look through the relocs for a section during the first phase. */
9629 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
9630 asection
*sec
, const Elf_Internal_Rela
*relocs
)
9632 Elf_Internal_Shdr
*symtab_hdr
;
9633 struct elf_link_hash_entry
**sym_hashes
;
9634 const Elf_Internal_Rela
*rel
;
9635 const Elf_Internal_Rela
*rel_end
;
9638 bfd_vma
*local_got_offsets
;
9639 struct elf32_arm_link_hash_table
*htab
;
9640 bfd_boolean needs_plt
;
9641 unsigned long nsyms
;
9643 if (info
->relocatable
)
9646 BFD_ASSERT (is_arm_elf (abfd
));
9648 htab
= elf32_arm_hash_table (info
);
9651 /* Create dynamic sections for relocatable executables so that we can
9652 copy relocations. */
9653 if (htab
->root
.is_relocatable_executable
9654 && ! htab
->root
.dynamic_sections_created
)
9656 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
9660 dynobj
= elf_hash_table (info
)->dynobj
;
9661 local_got_offsets
= elf_local_got_offsets (abfd
);
9663 symtab_hdr
= & elf_symtab_hdr (abfd
);
9664 sym_hashes
= elf_sym_hashes (abfd
);
9665 nsyms
= NUM_SHDR_ENTRIES (symtab_hdr
);
9667 rel_end
= relocs
+ sec
->reloc_count
;
9668 for (rel
= relocs
; rel
< rel_end
; rel
++)
9670 struct elf_link_hash_entry
*h
;
9671 struct elf32_arm_link_hash_entry
*eh
;
9672 unsigned long r_symndx
;
9675 r_symndx
= ELF32_R_SYM (rel
->r_info
);
9676 r_type
= ELF32_R_TYPE (rel
->r_info
);
9677 r_type
= arm_real_reloc_type (htab
, r_type
);
9679 if (r_symndx
>= nsyms
9680 /* PR 9934: It is possible to have relocations that do not
9681 refer to symbols, thus it is also possible to have an
9682 object file containing relocations but no symbol table. */
9683 && (r_symndx
> 0 || nsyms
> 0))
9685 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
9690 if (nsyms
== 0 || r_symndx
< symtab_hdr
->sh_info
)
9694 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
9695 while (h
->root
.type
== bfd_link_hash_indirect
9696 || h
->root
.type
== bfd_link_hash_warning
)
9697 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9700 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9705 case R_ARM_GOT_PREL
:
9706 case R_ARM_TLS_GD32
:
9707 case R_ARM_TLS_IE32
:
9708 /* This symbol requires a global offset table entry. */
9710 int tls_type
, old_tls_type
;
9714 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
9715 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
9716 default: tls_type
= GOT_NORMAL
; break;
9722 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
9726 bfd_signed_vma
*local_got_refcounts
;
9728 /* This is a global offset table entry for a local symbol. */
9729 local_got_refcounts
= elf_local_got_refcounts (abfd
);
9730 if (local_got_refcounts
== NULL
)
9734 size
= symtab_hdr
->sh_info
;
9735 size
*= (sizeof (bfd_signed_vma
) + sizeof (char));
9736 local_got_refcounts
= bfd_zalloc (abfd
, size
);
9737 if (local_got_refcounts
== NULL
)
9739 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
9740 elf32_arm_local_got_tls_type (abfd
)
9741 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
9743 local_got_refcounts
[r_symndx
] += 1;
9744 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
9747 /* We will already have issued an error message if there is a
9748 TLS / non-TLS mismatch, based on the symbol type. We don't
9749 support any linker relaxations. So just combine any TLS
9751 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
9752 && tls_type
!= GOT_NORMAL
)
9753 tls_type
|= old_tls_type
;
9755 if (old_tls_type
!= tls_type
)
9758 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
9760 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
9765 case R_ARM_TLS_LDM32
:
9766 if (r_type
== R_ARM_TLS_LDM32
)
9767 htab
->tls_ldm_got
.refcount
++;
9770 case R_ARM_GOTOFF32
:
9772 if (htab
->sgot
== NULL
)
9774 if (htab
->root
.dynobj
== NULL
)
9775 htab
->root
.dynobj
= abfd
;
9776 if (!create_got_section (htab
->root
.dynobj
, info
))
9782 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
9783 ldr __GOTT_INDEX__ offsets. */
9784 if (!htab
->vxworks_p
)
9793 case R_ARM_THM_CALL
:
9794 case R_ARM_THM_JUMP24
:
9795 case R_ARM_THM_JUMP19
:
9800 case R_ARM_ABS32_NOI
:
9802 case R_ARM_REL32_NOI
:
9803 case R_ARM_MOVW_ABS_NC
:
9804 case R_ARM_MOVT_ABS
:
9805 case R_ARM_MOVW_PREL_NC
:
9806 case R_ARM_MOVT_PREL
:
9807 case R_ARM_THM_MOVW_ABS_NC
:
9808 case R_ARM_THM_MOVT_ABS
:
9809 case R_ARM_THM_MOVW_PREL_NC
:
9810 case R_ARM_THM_MOVT_PREL
:
9814 /* Should the interworking branches be listed here? */
9817 /* If this reloc is in a read-only section, we might
9818 need a copy reloc. We can't check reliably at this
9819 stage whether the section is read-only, as input
9820 sections have not yet been mapped to output sections.
9821 Tentatively set the flag for now, and correct in
9822 adjust_dynamic_symbol. */
9826 /* We may need a .plt entry if the function this reloc
9827 refers to is in a different object. We can't tell for
9828 sure yet, because something later might force the
9833 /* If we create a PLT entry, this relocation will reference
9834 it, even if it's an ABS32 relocation. */
9835 h
->plt
.refcount
+= 1;
9837 /* It's too early to use htab->use_blx here, so we have to
9838 record possible blx references separately from
9839 relocs that definitely need a thumb stub. */
9841 if (r_type
== R_ARM_THM_CALL
)
9842 eh
->plt_maybe_thumb_refcount
+= 1;
9844 if (r_type
== R_ARM_THM_JUMP24
9845 || r_type
== R_ARM_THM_JUMP19
)
9846 eh
->plt_thumb_refcount
+= 1;
9849 /* If we are creating a shared library or relocatable executable,
9850 and this is a reloc against a global symbol, or a non PC
9851 relative reloc against a local symbol, then we need to copy
9852 the reloc into the shared library. However, if we are linking
9853 with -Bsymbolic, we do not need to copy a reloc against a
9854 global symbol which is defined in an object we are
9855 including in the link (i.e., DEF_REGULAR is set). At
9856 this point we have not seen all the input files, so it is
9857 possible that DEF_REGULAR is not set now but will be set
9858 later (it is never cleared). We account for that
9859 possibility below by storing information in the
9860 relocs_copied field of the hash table entry. */
9861 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
9862 && (sec
->flags
& SEC_ALLOC
) != 0
9863 && ((r_type
== R_ARM_ABS32
|| r_type
== R_ARM_ABS32_NOI
)
9864 || (h
!= NULL
&& ! h
->needs_plt
9865 && (! info
->symbolic
|| ! h
->def_regular
))))
9867 struct elf32_arm_relocs_copied
*p
, **head
;
9869 /* When creating a shared object, we must copy these
9870 reloc types into the output file. We create a reloc
9871 section in dynobj and make room for this reloc. */
9874 sreloc
= _bfd_elf_make_dynamic_reloc_section
9875 (sec
, dynobj
, 2, abfd
, ! htab
->use_rel
);
9880 /* BPABI objects never have dynamic relocations mapped. */
9881 if (htab
->symbian_p
)
9885 flags
= bfd_get_section_flags (dynobj
, sreloc
);
9886 flags
&= ~(SEC_LOAD
| SEC_ALLOC
);
9887 bfd_set_section_flags (dynobj
, sreloc
, flags
);
9891 /* If this is a global symbol, we count the number of
9892 relocations we need for this symbol. */
9895 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
9899 /* Track dynamic relocs needed for local syms too.
9900 We really need local syms available to do this
9906 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
9911 vpp
= &elf_section_data (s
)->local_dynrel
;
9912 head
= (struct elf32_arm_relocs_copied
**) vpp
;
9916 if (p
== NULL
|| p
->section
!= sec
)
9918 bfd_size_type amt
= sizeof *p
;
9920 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
9930 if (r_type
== R_ARM_REL32
|| r_type
== R_ARM_REL32_NOI
)
9936 /* This relocation describes the C++ object vtable hierarchy.
9937 Reconstruct it for later use during GC. */
9938 case R_ARM_GNU_VTINHERIT
:
9939 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
9943 /* This relocation describes which C++ vtable entries are actually
9944 used. Record for later use during GC. */
9945 case R_ARM_GNU_VTENTRY
:
9946 BFD_ASSERT (h
!= NULL
);
9948 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
9957 /* Unwinding tables are not referenced directly. This pass marks them as
9958 required if the corresponding code section is marked. */
9961 elf32_arm_gc_mark_extra_sections (struct bfd_link_info
*info
,
9962 elf_gc_mark_hook_fn gc_mark_hook
)
9965 Elf_Internal_Shdr
**elf_shdrp
;
9968 /* Marking EH data may cause additional code sections to be marked,
9969 requiring multiple passes. */
9974 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
9978 if (! is_arm_elf (sub
))
9981 elf_shdrp
= elf_elfsections (sub
);
9982 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
9984 Elf_Internal_Shdr
*hdr
;
9986 hdr
= &elf_section_data (o
)->this_hdr
;
9987 if (hdr
->sh_type
== SHT_ARM_EXIDX
9989 && hdr
->sh_link
< elf_numsections (sub
)
9991 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
9994 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
10004 /* Treat mapping symbols as special target symbols. */
10007 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
10009 return bfd_is_arm_special_symbol_name (sym
->name
,
10010 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
10013 /* This is a copy of elf_find_function() from elf.c except that
10014 ARM mapping symbols are ignored when looking for function names
10015 and STT_ARM_TFUNC is considered to a function type. */
10018 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
10019 asection
* section
,
10020 asymbol
** symbols
,
10022 const char ** filename_ptr
,
10023 const char ** functionname_ptr
)
10025 const char * filename
= NULL
;
10026 asymbol
* func
= NULL
;
10027 bfd_vma low_func
= 0;
10030 for (p
= symbols
; *p
!= NULL
; p
++)
10032 elf_symbol_type
*q
;
10034 q
= (elf_symbol_type
*) *p
;
10036 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
10041 filename
= bfd_asymbol_name (&q
->symbol
);
10044 case STT_ARM_TFUNC
:
10046 /* Skip mapping symbols. */
10047 if ((q
->symbol
.flags
& BSF_LOCAL
)
10048 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
10049 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
10051 /* Fall through. */
10052 if (bfd_get_section (&q
->symbol
) == section
10053 && q
->symbol
.value
>= low_func
10054 && q
->symbol
.value
<= offset
)
10056 func
= (asymbol
*) q
;
10057 low_func
= q
->symbol
.value
;
10067 *filename_ptr
= filename
;
10068 if (functionname_ptr
)
10069 *functionname_ptr
= bfd_asymbol_name (func
);
10075 /* Find the nearest line to a particular section and offset, for error
10076 reporting. This code is a duplicate of the code in elf.c, except
10077 that it uses arm_elf_find_function. */
10080 elf32_arm_find_nearest_line (bfd
* abfd
,
10081 asection
* section
,
10082 asymbol
** symbols
,
10084 const char ** filename_ptr
,
10085 const char ** functionname_ptr
,
10086 unsigned int * line_ptr
)
10088 bfd_boolean found
= FALSE
;
10090 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
10092 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
10093 filename_ptr
, functionname_ptr
,
10095 & elf_tdata (abfd
)->dwarf2_find_line_info
))
10097 if (!*functionname_ptr
)
10098 arm_elf_find_function (abfd
, section
, symbols
, offset
,
10099 *filename_ptr
? NULL
: filename_ptr
,
10105 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
10106 & found
, filename_ptr
,
10107 functionname_ptr
, line_ptr
,
10108 & elf_tdata (abfd
)->line_info
))
10111 if (found
&& (*functionname_ptr
|| *line_ptr
))
10114 if (symbols
== NULL
)
10117 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
10118 filename_ptr
, functionname_ptr
))
10126 elf32_arm_find_inliner_info (bfd
* abfd
,
10127 const char ** filename_ptr
,
10128 const char ** functionname_ptr
,
10129 unsigned int * line_ptr
)
10132 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
10133 functionname_ptr
, line_ptr
,
10134 & elf_tdata (abfd
)->dwarf2_find_line_info
);
10138 /* Adjust a symbol defined by a dynamic object and referenced by a
10139 regular object. The current definition is in some section of the
10140 dynamic object, but we're not including those sections. We have to
10141 change the definition to something the rest of the link can
10145 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
10146 struct elf_link_hash_entry
* h
)
10150 struct elf32_arm_link_hash_entry
* eh
;
10151 struct elf32_arm_link_hash_table
*globals
;
10153 globals
= elf32_arm_hash_table (info
);
10154 dynobj
= elf_hash_table (info
)->dynobj
;
10156 /* Make sure we know what is going on here. */
10157 BFD_ASSERT (dynobj
!= NULL
10159 || h
->u
.weakdef
!= NULL
10162 && !h
->def_regular
)));
10164 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10166 /* If this is a function, put it in the procedure linkage table. We
10167 will fill in the contents of the procedure linkage table later,
10168 when we know the address of the .got section. */
10169 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
10172 if (h
->plt
.refcount
<= 0
10173 || SYMBOL_CALLS_LOCAL (info
, h
)
10174 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
10175 && h
->root
.type
== bfd_link_hash_undefweak
))
10177 /* This case can occur if we saw a PLT32 reloc in an input
10178 file, but the symbol was never referred to by a dynamic
10179 object, or if all references were garbage collected. In
10180 such a case, we don't actually need to build a procedure
10181 linkage table, and we can just do a PC24 reloc instead. */
10182 h
->plt
.offset
= (bfd_vma
) -1;
10183 eh
->plt_thumb_refcount
= 0;
10184 eh
->plt_maybe_thumb_refcount
= 0;
10192 /* It's possible that we incorrectly decided a .plt reloc was
10193 needed for an R_ARM_PC24 or similar reloc to a non-function sym
10194 in check_relocs. We can't decide accurately between function
10195 and non-function syms in check-relocs; Objects loaded later in
10196 the link may change h->type. So fix it now. */
10197 h
->plt
.offset
= (bfd_vma
) -1;
10198 eh
->plt_thumb_refcount
= 0;
10199 eh
->plt_maybe_thumb_refcount
= 0;
10202 /* If this is a weak symbol, and there is a real definition, the
10203 processor independent code will have arranged for us to see the
10204 real definition first, and we can just use the same value. */
10205 if (h
->u
.weakdef
!= NULL
)
10207 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
10208 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
10209 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
10210 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
10214 /* If there are no non-GOT references, we do not need a copy
10216 if (!h
->non_got_ref
)
10219 /* This is a reference to a symbol defined by a dynamic object which
10220 is not a function. */
10222 /* If we are creating a shared library, we must presume that the
10223 only references to the symbol are via the global offset table.
10224 For such cases we need not do anything here; the relocations will
10225 be handled correctly by relocate_section. Relocatable executables
10226 can reference data in shared objects directly, so we don't need to
10227 do anything here. */
10228 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
10233 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
10234 h
->root
.root
.string
);
10238 /* We must allocate the symbol in our .dynbss section, which will
10239 become part of the .bss section of the executable. There will be
10240 an entry for this symbol in the .dynsym section. The dynamic
10241 object will contain position independent code, so all references
10242 from the dynamic object to this symbol will go through the global
10243 offset table. The dynamic linker will use the .dynsym entry to
10244 determine the address it must put in the global offset table, so
10245 both the dynamic object and the regular object will refer to the
10246 same memory location for the variable. */
10247 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
10248 BFD_ASSERT (s
!= NULL
);
10250 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
10251 copy the initial value out of the dynamic object and into the
10252 runtime process image. We need to remember the offset into the
10253 .rel(a).bss section we are going to use. */
10254 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
10258 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
10259 BFD_ASSERT (srel
!= NULL
);
10260 srel
->size
+= RELOC_SIZE (globals
);
10264 return _bfd_elf_adjust_dynamic_copy (h
, s
);
10267 /* Allocate space in .plt, .got and associated reloc sections for
10271 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
10273 struct bfd_link_info
*info
;
10274 struct elf32_arm_link_hash_table
*htab
;
10275 struct elf32_arm_link_hash_entry
*eh
;
10276 struct elf32_arm_relocs_copied
*p
;
10277 bfd_signed_vma thumb_refs
;
10279 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10281 if (h
->root
.type
== bfd_link_hash_indirect
)
10284 if (h
->root
.type
== bfd_link_hash_warning
)
10285 /* When warning symbols are created, they **replace** the "real"
10286 entry in the hash table, thus we never get to see the real
10287 symbol in a hash traversal. So look at it now. */
10288 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10290 info
= (struct bfd_link_info
*) inf
;
10291 htab
= elf32_arm_hash_table (info
);
10293 if (htab
->root
.dynamic_sections_created
10294 && h
->plt
.refcount
> 0)
10296 /* Make sure this symbol is output as a dynamic symbol.
10297 Undefined weak syms won't yet be marked as dynamic. */
10298 if (h
->dynindx
== -1
10299 && !h
->forced_local
)
10301 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
10306 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
10308 asection
*s
= htab
->splt
;
10310 /* If this is the first .plt entry, make room for the special
10313 s
->size
+= htab
->plt_header_size
;
10315 h
->plt
.offset
= s
->size
;
10317 /* If we will insert a Thumb trampoline before this PLT, leave room
10319 thumb_refs
= eh
->plt_thumb_refcount
;
10320 if (!htab
->use_blx
)
10321 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
10323 if (thumb_refs
> 0)
10325 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
10326 s
->size
+= PLT_THUMB_STUB_SIZE
;
10329 /* If this symbol is not defined in a regular file, and we are
10330 not generating a shared library, then set the symbol to this
10331 location in the .plt. This is required to make function
10332 pointers compare as equal between the normal executable and
10333 the shared library. */
10335 && !h
->def_regular
)
10337 h
->root
.u
.def
.section
= s
;
10338 h
->root
.u
.def
.value
= h
->plt
.offset
;
10340 /* Make sure the function is not marked as Thumb, in case
10341 it is the target of an ABS32 relocation, which will
10342 point to the PLT entry. */
10343 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
10344 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
10347 /* Make room for this entry. */
10348 s
->size
+= htab
->plt_entry_size
;
10350 if (!htab
->symbian_p
)
10352 /* We also need to make an entry in the .got.plt section, which
10353 will be placed in the .got section by the linker script. */
10354 eh
->plt_got_offset
= htab
->sgotplt
->size
;
10355 htab
->sgotplt
->size
+= 4;
10358 /* We also need to make an entry in the .rel(a).plt section. */
10359 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
10361 /* VxWorks executables have a second set of relocations for
10362 each PLT entry. They go in a separate relocation section,
10363 which is processed by the kernel loader. */
10364 if (htab
->vxworks_p
&& !info
->shared
)
10366 /* There is a relocation for the initial PLT entry:
10367 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
10368 if (h
->plt
.offset
== htab
->plt_header_size
)
10369 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
10371 /* There are two extra relocations for each subsequent
10372 PLT entry: an R_ARM_32 relocation for the GOT entry,
10373 and an R_ARM_32 relocation for the PLT entry. */
10374 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
10379 h
->plt
.offset
= (bfd_vma
) -1;
10385 h
->plt
.offset
= (bfd_vma
) -1;
10389 if (h
->got
.refcount
> 0)
10393 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
10396 /* Make sure this symbol is output as a dynamic symbol.
10397 Undefined weak syms won't yet be marked as dynamic. */
10398 if (h
->dynindx
== -1
10399 && !h
->forced_local
)
10401 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
10405 if (!htab
->symbian_p
)
10408 h
->got
.offset
= s
->size
;
10410 if (tls_type
== GOT_UNKNOWN
)
10413 if (tls_type
== GOT_NORMAL
)
10414 /* Non-TLS symbols need one GOT slot. */
10418 if (tls_type
& GOT_TLS_GD
)
10419 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
10421 if (tls_type
& GOT_TLS_IE
)
10422 /* R_ARM_TLS_IE32 needs one GOT slot. */
10426 dyn
= htab
->root
.dynamic_sections_created
;
10429 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
10431 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
10434 if (tls_type
!= GOT_NORMAL
10435 && (info
->shared
|| indx
!= 0)
10436 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
10437 || h
->root
.type
!= bfd_link_hash_undefweak
))
10439 if (tls_type
& GOT_TLS_IE
)
10440 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10442 if (tls_type
& GOT_TLS_GD
)
10443 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10445 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
10446 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10448 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
10449 || h
->root
.type
!= bfd_link_hash_undefweak
)
10451 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
10452 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10456 h
->got
.offset
= (bfd_vma
) -1;
10458 /* Allocate stubs for exported Thumb functions on v4t. */
10459 if (!htab
->use_blx
&& h
->dynindx
!= -1
10461 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
10462 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
10464 struct elf_link_hash_entry
* th
;
10465 struct bfd_link_hash_entry
* bh
;
10466 struct elf_link_hash_entry
* myh
;
10470 /* Create a new symbol to regist the real location of the function. */
10471 s
= h
->root
.u
.def
.section
;
10472 sprintf (name
, "__real_%s", h
->root
.root
.string
);
10473 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
10474 name
, BSF_GLOBAL
, s
,
10475 h
->root
.u
.def
.value
,
10476 NULL
, TRUE
, FALSE
, &bh
);
10478 myh
= (struct elf_link_hash_entry
*) bh
;
10479 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
10480 myh
->forced_local
= 1;
10481 eh
->export_glue
= myh
;
10482 th
= record_arm_to_thumb_glue (info
, h
);
10483 /* Point the symbol at the stub. */
10484 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
10485 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
10486 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
10489 if (eh
->relocs_copied
== NULL
)
10492 /* In the shared -Bsymbolic case, discard space allocated for
10493 dynamic pc-relative relocs against symbols which turn out to be
10494 defined in regular objects. For the normal shared case, discard
10495 space for pc-relative relocs that have become local due to symbol
10496 visibility changes. */
10498 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
10500 /* The only relocs that use pc_count are R_ARM_REL32 and
10501 R_ARM_REL32_NOI, which will appear on something like
10502 ".long foo - .". We want calls to protected symbols to resolve
10503 directly to the function rather than going via the plt. If people
10504 want function pointer comparisons to work as expected then they
10505 should avoid writing assembly like ".long foo - .". */
10506 if (SYMBOL_CALLS_LOCAL (info
, h
))
10508 struct elf32_arm_relocs_copied
**pp
;
10510 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
10512 p
->count
-= p
->pc_count
;
10521 if (elf32_arm_hash_table (info
)->vxworks_p
)
10523 struct elf32_arm_relocs_copied
**pp
;
10525 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
10527 if (strcmp (p
->section
->output_section
->name
, ".tls_vars") == 0)
10534 /* Also discard relocs on undefined weak syms with non-default
10536 if (eh
->relocs_copied
!= NULL
10537 && h
->root
.type
== bfd_link_hash_undefweak
)
10539 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
10540 eh
->relocs_copied
= NULL
;
10542 /* Make sure undefined weak symbols are output as a dynamic
10544 else if (h
->dynindx
== -1
10545 && !h
->forced_local
)
10547 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
10552 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
10553 && h
->root
.type
== bfd_link_hash_new
)
10555 /* Output absolute symbols so that we can create relocations
10556 against them. For normal symbols we output a relocation
10557 against the section that contains them. */
10558 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
10565 /* For the non-shared case, discard space for relocs against
10566 symbols which turn out to need copy relocs or are not
10569 if (!h
->non_got_ref
10570 && ((h
->def_dynamic
10571 && !h
->def_regular
)
10572 || (htab
->root
.dynamic_sections_created
10573 && (h
->root
.type
== bfd_link_hash_undefweak
10574 || h
->root
.type
== bfd_link_hash_undefined
))))
10576 /* Make sure this symbol is output as a dynamic symbol.
10577 Undefined weak syms won't yet be marked as dynamic. */
10578 if (h
->dynindx
== -1
10579 && !h
->forced_local
)
10581 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
10585 /* If that succeeded, we know we'll be keeping all the
10587 if (h
->dynindx
!= -1)
10591 eh
->relocs_copied
= NULL
;
10596 /* Finally, allocate space. */
10597 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
10599 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
10600 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
10606 /* Find any dynamic relocs that apply to read-only sections. */
10609 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
* h
, void * inf
)
10611 struct elf32_arm_link_hash_entry
* eh
;
10612 struct elf32_arm_relocs_copied
* p
;
10614 if (h
->root
.type
== bfd_link_hash_warning
)
10615 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10617 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10618 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
10620 asection
*s
= p
->section
;
10622 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
10624 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
10626 info
->flags
|= DF_TEXTREL
;
10628 /* Not an error, just cut short the traversal. */
10636 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info
*info
,
10639 struct elf32_arm_link_hash_table
*globals
;
10641 globals
= elf32_arm_hash_table (info
);
10642 globals
->byteswap_code
= byteswap_code
;
10645 /* Set the sizes of the dynamic sections. */
10648 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
10649 struct bfd_link_info
* info
)
10654 bfd_boolean relocs
;
10656 struct elf32_arm_link_hash_table
*htab
;
10658 htab
= elf32_arm_hash_table (info
);
10659 dynobj
= elf_hash_table (info
)->dynobj
;
10660 BFD_ASSERT (dynobj
!= NULL
);
10661 check_use_blx (htab
);
10663 if (elf_hash_table (info
)->dynamic_sections_created
)
10665 /* Set the contents of the .interp section to the interpreter. */
10666 if (info
->executable
)
10668 s
= bfd_get_section_by_name (dynobj
, ".interp");
10669 BFD_ASSERT (s
!= NULL
);
10670 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
10671 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10675 /* Set up .got offsets for local syms, and space for local dynamic
10677 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10679 bfd_signed_vma
*local_got
;
10680 bfd_signed_vma
*end_local_got
;
10681 char *local_tls_type
;
10682 bfd_size_type locsymcount
;
10683 Elf_Internal_Shdr
*symtab_hdr
;
10685 bfd_boolean is_vxworks
= elf32_arm_hash_table (info
)->vxworks_p
;
10687 if (! is_arm_elf (ibfd
))
10690 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10692 struct elf32_arm_relocs_copied
*p
;
10694 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10696 if (!bfd_is_abs_section (p
->section
)
10697 && bfd_is_abs_section (p
->section
->output_section
))
10699 /* Input section has been discarded, either because
10700 it is a copy of a linkonce section or due to
10701 linker script /DISCARD/, so we'll be discarding
10704 else if (is_vxworks
10705 && strcmp (p
->section
->output_section
->name
,
10708 /* Relocations in vxworks .tls_vars sections are
10709 handled specially by the loader. */
10711 else if (p
->count
!= 0)
10713 srel
= elf_section_data (p
->section
)->sreloc
;
10714 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
10715 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
10716 info
->flags
|= DF_TEXTREL
;
10721 local_got
= elf_local_got_refcounts (ibfd
);
10725 symtab_hdr
= & elf_symtab_hdr (ibfd
);
10726 locsymcount
= symtab_hdr
->sh_info
;
10727 end_local_got
= local_got
+ locsymcount
;
10728 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
10730 srel
= htab
->srelgot
;
10731 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
10733 if (*local_got
> 0)
10735 *local_got
= s
->size
;
10736 if (*local_tls_type
& GOT_TLS_GD
)
10737 /* TLS_GD relocs need an 8-byte structure in the GOT. */
10739 if (*local_tls_type
& GOT_TLS_IE
)
10741 if (*local_tls_type
== GOT_NORMAL
)
10744 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
10745 srel
->size
+= RELOC_SIZE (htab
);
10748 *local_got
= (bfd_vma
) -1;
10752 if (htab
->tls_ldm_got
.refcount
> 0)
10754 /* Allocate two GOT entries and one dynamic relocation (if necessary)
10755 for R_ARM_TLS_LDM32 relocations. */
10756 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
10757 htab
->sgot
->size
+= 8;
10759 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10762 htab
->tls_ldm_got
.offset
= -1;
10764 /* Allocate global sym .plt and .got entries, and space for global
10765 sym dynamic relocs. */
10766 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
10768 /* Here we rummage through the found bfds to collect glue information. */
10769 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10771 if (! is_arm_elf (ibfd
))
10774 /* Initialise mapping tables for code/data. */
10775 bfd_elf32_arm_init_maps (ibfd
);
10777 if (!bfd_elf32_arm_process_before_allocation (ibfd
, info
)
10778 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd
, info
))
10779 /* xgettext:c-format */
10780 _bfd_error_handler (_("Errors encountered processing file %s"),
10784 /* The check_relocs and adjust_dynamic_symbol entry points have
10785 determined the sizes of the various dynamic sections. Allocate
10786 memory for them. */
10789 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10793 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10796 /* It's OK to base decisions on the section name, because none
10797 of the dynobj section names depend upon the input files. */
10798 name
= bfd_get_section_name (dynobj
, s
);
10800 if (strcmp (name
, ".plt") == 0)
10802 /* Remember whether there is a PLT. */
10803 plt
= s
->size
!= 0;
10805 else if (CONST_STRNEQ (name
, ".rel"))
10809 /* Remember whether there are any reloc sections other
10810 than .rel(a).plt and .rela.plt.unloaded. */
10811 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
10814 /* We use the reloc_count field as a counter if we need
10815 to copy relocs into the output file. */
10816 s
->reloc_count
= 0;
10819 else if (! CONST_STRNEQ (name
, ".got")
10820 && strcmp (name
, ".dynbss") != 0)
10822 /* It's not one of our sections, so don't allocate space. */
10828 /* If we don't need this section, strip it from the
10829 output file. This is mostly to handle .rel(a).bss and
10830 .rel(a).plt. We must create both sections in
10831 create_dynamic_sections, because they must be created
10832 before the linker maps input sections to output
10833 sections. The linker does that before
10834 adjust_dynamic_symbol is called, and it is that
10835 function which decides whether anything needs to go
10836 into these sections. */
10837 s
->flags
|= SEC_EXCLUDE
;
10841 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10844 /* Allocate memory for the section contents. */
10845 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10846 if (s
->contents
== NULL
)
10850 if (elf_hash_table (info
)->dynamic_sections_created
)
10852 /* Add some entries to the .dynamic section. We fill in the
10853 values later, in elf32_arm_finish_dynamic_sections, but we
10854 must add the entries now so that we get the correct size for
10855 the .dynamic section. The DT_DEBUG entry is filled in by the
10856 dynamic linker and used by the debugger. */
10857 #define add_dynamic_entry(TAG, VAL) \
10858 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10860 if (info
->executable
)
10862 if (!add_dynamic_entry (DT_DEBUG
, 0))
10868 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
10869 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10870 || !add_dynamic_entry (DT_PLTREL
,
10871 htab
->use_rel
? DT_REL
: DT_RELA
)
10872 || !add_dynamic_entry (DT_JMPREL
, 0))
10880 if (!add_dynamic_entry (DT_REL
, 0)
10881 || !add_dynamic_entry (DT_RELSZ
, 0)
10882 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
10887 if (!add_dynamic_entry (DT_RELA
, 0)
10888 || !add_dynamic_entry (DT_RELASZ
, 0)
10889 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
10894 /* If any dynamic relocs apply to a read-only section,
10895 then we need a DT_TEXTREL entry. */
10896 if ((info
->flags
& DF_TEXTREL
) == 0)
10897 elf_link_hash_traverse (& htab
->root
, elf32_arm_readonly_dynrelocs
,
10900 if ((info
->flags
& DF_TEXTREL
) != 0)
10902 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10905 if (htab
->vxworks_p
10906 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
10909 #undef add_dynamic_entry
10914 /* Finish up dynamic symbol handling. We set the contents of various
10915 dynamic sections here. */
10918 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
,
10919 struct bfd_link_info
* info
,
10920 struct elf_link_hash_entry
* h
,
10921 Elf_Internal_Sym
* sym
)
10924 struct elf32_arm_link_hash_table
*htab
;
10925 struct elf32_arm_link_hash_entry
*eh
;
10927 dynobj
= elf_hash_table (info
)->dynobj
;
10928 htab
= elf32_arm_hash_table (info
);
10929 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10931 if (h
->plt
.offset
!= (bfd_vma
) -1)
10937 Elf_Internal_Rela rel
;
10939 /* This symbol has an entry in the procedure linkage table. Set
10942 BFD_ASSERT (h
->dynindx
!= -1);
10944 splt
= bfd_get_section_by_name (dynobj
, ".plt");
10945 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
10946 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
10948 /* Fill in the entry in the procedure linkage table. */
10949 if (htab
->symbian_p
)
10951 put_arm_insn (htab
, output_bfd
,
10952 elf32_arm_symbian_plt_entry
[0],
10953 splt
->contents
+ h
->plt
.offset
);
10954 bfd_put_32 (output_bfd
,
10955 elf32_arm_symbian_plt_entry
[1],
10956 splt
->contents
+ h
->plt
.offset
+ 4);
10958 /* Fill in the entry in the .rel.plt section. */
10959 rel
.r_offset
= (splt
->output_section
->vma
10960 + splt
->output_offset
10961 + h
->plt
.offset
+ 4);
10962 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
10964 /* Get the index in the procedure linkage table which
10965 corresponds to this symbol. This is the index of this symbol
10966 in all the symbols for which we are making plt entries. The
10967 first entry in the procedure linkage table is reserved. */
10968 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
10969 / htab
->plt_entry_size
);
10973 bfd_vma got_offset
, got_address
, plt_address
;
10974 bfd_vma got_displacement
;
10978 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
10979 BFD_ASSERT (sgot
!= NULL
);
10981 /* Get the offset into the .got.plt table of the entry that
10982 corresponds to this function. */
10983 got_offset
= eh
->plt_got_offset
;
10985 /* Get the index in the procedure linkage table which
10986 corresponds to this symbol. This is the index of this symbol
10987 in all the symbols for which we are making plt entries. The
10988 first three entries in .got.plt are reserved; after that
10989 symbols appear in the same order as in .plt. */
10990 plt_index
= (got_offset
- 12) / 4;
10992 /* Calculate the address of the GOT entry. */
10993 got_address
= (sgot
->output_section
->vma
10994 + sgot
->output_offset
10997 /* ...and the address of the PLT entry. */
10998 plt_address
= (splt
->output_section
->vma
10999 + splt
->output_offset
11002 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
11003 if (htab
->vxworks_p
&& info
->shared
)
11008 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
11010 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
11012 val
|= got_address
- sgot
->output_section
->vma
;
11014 val
|= plt_index
* RELOC_SIZE (htab
);
11015 if (i
== 2 || i
== 5)
11016 bfd_put_32 (output_bfd
, val
, ptr
);
11018 put_arm_insn (htab
, output_bfd
, val
, ptr
);
11021 else if (htab
->vxworks_p
)
11026 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
11028 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
11030 val
|= got_address
;
11032 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
11034 val
|= plt_index
* RELOC_SIZE (htab
);
11035 if (i
== 2 || i
== 5)
11036 bfd_put_32 (output_bfd
, val
, ptr
);
11038 put_arm_insn (htab
, output_bfd
, val
, ptr
);
11041 loc
= (htab
->srelplt2
->contents
11042 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
11044 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
11045 referencing the GOT for this PLT entry. */
11046 rel
.r_offset
= plt_address
+ 8;
11047 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
11048 rel
.r_addend
= got_offset
;
11049 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
11050 loc
+= RELOC_SIZE (htab
);
11052 /* Create the R_ARM_ABS32 relocation referencing the
11053 beginning of the PLT for this GOT entry. */
11054 rel
.r_offset
= got_address
;
11055 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
11057 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
11061 bfd_signed_vma thumb_refs
;
11062 /* Calculate the displacement between the PLT slot and the
11063 entry in the GOT. The eight-byte offset accounts for the
11064 value produced by adding to pc in the first instruction
11065 of the PLT stub. */
11066 got_displacement
= got_address
- (plt_address
+ 8);
11068 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
11070 thumb_refs
= eh
->plt_thumb_refcount
;
11071 if (!htab
->use_blx
)
11072 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
11074 if (thumb_refs
> 0)
11076 put_thumb_insn (htab
, output_bfd
,
11077 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
11078 put_thumb_insn (htab
, output_bfd
,
11079 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
11082 put_arm_insn (htab
, output_bfd
,
11083 elf32_arm_plt_entry
[0]
11084 | ((got_displacement
& 0x0ff00000) >> 20),
11086 put_arm_insn (htab
, output_bfd
,
11087 elf32_arm_plt_entry
[1]
11088 | ((got_displacement
& 0x000ff000) >> 12),
11090 put_arm_insn (htab
, output_bfd
,
11091 elf32_arm_plt_entry
[2]
11092 | (got_displacement
& 0x00000fff),
11094 #ifdef FOUR_WORD_PLT
11095 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
11099 /* Fill in the entry in the global offset table. */
11100 bfd_put_32 (output_bfd
,
11101 (splt
->output_section
->vma
11102 + splt
->output_offset
),
11103 sgot
->contents
+ got_offset
);
11105 /* Fill in the entry in the .rel(a).plt section. */
11107 rel
.r_offset
= got_address
;
11108 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
11111 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
11112 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
11114 if (!h
->def_regular
)
11116 /* Mark the symbol as undefined, rather than as defined in
11117 the .plt section. Leave the value alone. */
11118 sym
->st_shndx
= SHN_UNDEF
;
11119 /* If the symbol is weak, we do need to clear the value.
11120 Otherwise, the PLT entry would provide a definition for
11121 the symbol even if the symbol wasn't defined anywhere,
11122 and so the symbol would never be NULL. */
11123 if (!h
->ref_regular_nonweak
)
11128 if (h
->got
.offset
!= (bfd_vma
) -1
11129 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
11130 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
11134 Elf_Internal_Rela rel
;
11138 /* This symbol has an entry in the global offset table. Set it
11140 sgot
= bfd_get_section_by_name (dynobj
, ".got");
11141 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
11142 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
11144 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
11146 rel
.r_offset
= (sgot
->output_section
->vma
11147 + sgot
->output_offset
11150 /* If this is a static link, or it is a -Bsymbolic link and the
11151 symbol is defined locally or was forced to be local because
11152 of a version file, we just want to emit a RELATIVE reloc.
11153 The entry in the global offset table will already have been
11154 initialized in the relocate_section function. */
11156 && SYMBOL_REFERENCES_LOCAL (info
, h
))
11158 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
11159 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
11160 if (!htab
->use_rel
)
11162 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
11163 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
11168 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
11169 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
11170 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
11173 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
11174 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
11180 Elf_Internal_Rela rel
;
11183 /* This symbol needs a copy reloc. Set it up. */
11184 BFD_ASSERT (h
->dynindx
!= -1
11185 && (h
->root
.type
== bfd_link_hash_defined
11186 || h
->root
.type
== bfd_link_hash_defweak
));
11188 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
11189 RELOC_SECTION (htab
, ".bss"));
11190 BFD_ASSERT (s
!= NULL
);
11193 rel
.r_offset
= (h
->root
.u
.def
.value
11194 + h
->root
.u
.def
.section
->output_section
->vma
11195 + h
->root
.u
.def
.section
->output_offset
);
11196 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
11197 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
11198 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
11201 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
11202 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
11203 to the ".got" section. */
11204 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
11205 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
11206 sym
->st_shndx
= SHN_ABS
;
11211 /* Finish up the dynamic sections. */
11214 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
11220 dynobj
= elf_hash_table (info
)->dynobj
;
11222 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
11223 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
11224 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
11226 if (elf_hash_table (info
)->dynamic_sections_created
)
11229 Elf32_External_Dyn
*dyncon
, *dynconend
;
11230 struct elf32_arm_link_hash_table
*htab
;
11232 htab
= elf32_arm_hash_table (info
);
11233 splt
= bfd_get_section_by_name (dynobj
, ".plt");
11234 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
11236 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
11237 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
11239 for (; dyncon
< dynconend
; dyncon
++)
11241 Elf_Internal_Dyn dyn
;
11245 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
11252 if (htab
->vxworks_p
11253 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
11254 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11259 goto get_vma_if_bpabi
;
11262 goto get_vma_if_bpabi
;
11265 goto get_vma_if_bpabi
;
11267 name
= ".gnu.version";
11268 goto get_vma_if_bpabi
;
11270 name
= ".gnu.version_d";
11271 goto get_vma_if_bpabi
;
11273 name
= ".gnu.version_r";
11274 goto get_vma_if_bpabi
;
11280 name
= RELOC_SECTION (htab
, ".plt");
11282 s
= bfd_get_section_by_name (output_bfd
, name
);
11283 BFD_ASSERT (s
!= NULL
);
11284 if (!htab
->symbian_p
)
11285 dyn
.d_un
.d_ptr
= s
->vma
;
11287 /* In the BPABI, tags in the PT_DYNAMIC section point
11288 at the file offset, not the memory address, for the
11289 convenience of the post linker. */
11290 dyn
.d_un
.d_ptr
= s
->filepos
;
11291 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11295 if (htab
->symbian_p
)
11300 s
= bfd_get_section_by_name (output_bfd
,
11301 RELOC_SECTION (htab
, ".plt"));
11302 BFD_ASSERT (s
!= NULL
);
11303 dyn
.d_un
.d_val
= s
->size
;
11304 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11309 if (!htab
->symbian_p
)
11311 /* My reading of the SVR4 ABI indicates that the
11312 procedure linkage table relocs (DT_JMPREL) should be
11313 included in the overall relocs (DT_REL). This is
11314 what Solaris does. However, UnixWare can not handle
11315 that case. Therefore, we override the DT_RELSZ entry
11316 here to make it not include the JMPREL relocs. Since
11317 the linker script arranges for .rel(a).plt to follow all
11318 other relocation sections, we don't have to worry
11319 about changing the DT_REL entry. */
11320 s
= bfd_get_section_by_name (output_bfd
,
11321 RELOC_SECTION (htab
, ".plt"));
11323 dyn
.d_un
.d_val
-= s
->size
;
11324 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11327 /* Fall through. */
11331 /* In the BPABI, the DT_REL tag must point at the file
11332 offset, not the VMA, of the first relocation
11333 section. So, we use code similar to that in
11334 elflink.c, but do not check for SHF_ALLOC on the
11335 relcoation section, since relocations sections are
11336 never allocated under the BPABI. The comments above
11337 about Unixware notwithstanding, we include all of the
11338 relocations here. */
11339 if (htab
->symbian_p
)
11342 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
11343 ? SHT_REL
: SHT_RELA
);
11344 dyn
.d_un
.d_val
= 0;
11345 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
11347 Elf_Internal_Shdr
*hdr
11348 = elf_elfsections (output_bfd
)[i
];
11349 if (hdr
->sh_type
== type
)
11351 if (dyn
.d_tag
== DT_RELSZ
11352 || dyn
.d_tag
== DT_RELASZ
)
11353 dyn
.d_un
.d_val
+= hdr
->sh_size
;
11354 else if ((ufile_ptr
) hdr
->sh_offset
11355 <= dyn
.d_un
.d_val
- 1)
11356 dyn
.d_un
.d_val
= hdr
->sh_offset
;
11359 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11363 /* Set the bottom bit of DT_INIT/FINI if the
11364 corresponding function is Thumb. */
11366 name
= info
->init_function
;
11369 name
= info
->fini_function
;
11371 /* If it wasn't set by elf_bfd_final_link
11372 then there is nothing to adjust. */
11373 if (dyn
.d_un
.d_val
!= 0)
11375 struct elf_link_hash_entry
* eh
;
11377 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
11378 FALSE
, FALSE
, TRUE
);
11380 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
11382 dyn
.d_un
.d_val
|= 1;
11383 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11390 /* Fill in the first entry in the procedure linkage table. */
11391 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
11393 const bfd_vma
*plt0_entry
;
11394 bfd_vma got_address
, plt_address
, got_displacement
;
11396 /* Calculate the addresses of the GOT and PLT. */
11397 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
11398 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
11400 if (htab
->vxworks_p
)
11402 /* The VxWorks GOT is relocated by the dynamic linker.
11403 Therefore, we must emit relocations rather than simply
11404 computing the values now. */
11405 Elf_Internal_Rela rel
;
11407 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
11408 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
11409 splt
->contents
+ 0);
11410 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
11411 splt
->contents
+ 4);
11412 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
11413 splt
->contents
+ 8);
11414 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
11416 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
11417 rel
.r_offset
= plt_address
+ 12;
11418 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
11420 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
11421 htab
->srelplt2
->contents
);
11425 got_displacement
= got_address
- (plt_address
+ 16);
11427 plt0_entry
= elf32_arm_plt0_entry
;
11428 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
11429 splt
->contents
+ 0);
11430 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
11431 splt
->contents
+ 4);
11432 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
11433 splt
->contents
+ 8);
11434 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
11435 splt
->contents
+ 12);
11437 #ifdef FOUR_WORD_PLT
11438 /* The displacement value goes in the otherwise-unused
11439 last word of the second entry. */
11440 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
11442 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
11447 /* UnixWare sets the entsize of .plt to 4, although that doesn't
11448 really seem like the right value. */
11449 if (splt
->output_section
->owner
== output_bfd
)
11450 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
11452 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
11454 /* Correct the .rel(a).plt.unloaded relocations. They will have
11455 incorrect symbol indexes. */
11459 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
11460 / htab
->plt_entry_size
);
11461 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
11463 for (; num_plts
; num_plts
--)
11465 Elf_Internal_Rela rel
;
11467 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
11468 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
11469 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
11470 p
+= RELOC_SIZE (htab
);
11472 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
11473 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
11474 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
11475 p
+= RELOC_SIZE (htab
);
11480 /* Fill in the first three entries in the global offset table. */
11483 if (sgot
->size
> 0)
11486 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
11488 bfd_put_32 (output_bfd
,
11489 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
11491 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
11492 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
11495 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
11502 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
11504 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
11505 struct elf32_arm_link_hash_table
*globals
;
11507 i_ehdrp
= elf_elfheader (abfd
);
11509 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
11510 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
11512 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
11513 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
11517 globals
= elf32_arm_hash_table (link_info
);
11518 if (globals
->byteswap_code
)
11519 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
11523 static enum elf_reloc_type_class
11524 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
11526 switch ((int) ELF32_R_TYPE (rela
->r_info
))
11528 case R_ARM_RELATIVE
:
11529 return reloc_class_relative
;
11530 case R_ARM_JUMP_SLOT
:
11531 return reloc_class_plt
;
11533 return reloc_class_copy
;
11535 return reloc_class_normal
;
11539 /* Set the right machine number for an Arm ELF file. */
11542 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
11544 if (hdr
->sh_type
== SHT_NOTE
)
11545 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
11551 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
11553 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
11556 /* Return TRUE if this is an unwinding table entry. */
11559 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
11561 return (CONST_STRNEQ (name
, ELF_STRING_ARM_unwind
)
11562 || CONST_STRNEQ (name
, ELF_STRING_ARM_unwind_once
));
11566 /* Set the type and flags for an ARM section. We do this by
11567 the section name, which is a hack, but ought to work. */
11570 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
11574 name
= bfd_get_section_name (abfd
, sec
);
11576 if (is_arm_elf_unwind_section_name (abfd
, name
))
11578 hdr
->sh_type
= SHT_ARM_EXIDX
;
11579 hdr
->sh_flags
|= SHF_LINK_ORDER
;
11584 /* Handle an ARM specific section when reading an object file. This is
11585 called when bfd_section_from_shdr finds a section with an unknown
11589 elf32_arm_section_from_shdr (bfd
*abfd
,
11590 Elf_Internal_Shdr
* hdr
,
11594 /* There ought to be a place to keep ELF backend specific flags, but
11595 at the moment there isn't one. We just keep track of the
11596 sections by their name, instead. Fortunately, the ABI gives
11597 names for all the ARM specific sections, so we will probably get
11599 switch (hdr
->sh_type
)
11601 case SHT_ARM_EXIDX
:
11602 case SHT_ARM_PREEMPTMAP
:
11603 case SHT_ARM_ATTRIBUTES
:
11610 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
11616 /* A structure used to record a list of sections, independently
11617 of the next and prev fields in the asection structure. */
11618 typedef struct section_list
11621 struct section_list
* next
;
11622 struct section_list
* prev
;
11626 /* Unfortunately we need to keep a list of sections for which
11627 an _arm_elf_section_data structure has been allocated. This
11628 is because it is possible for functions like elf32_arm_write_section
11629 to be called on a section which has had an elf_data_structure
11630 allocated for it (and so the used_by_bfd field is valid) but
11631 for which the ARM extended version of this structure - the
11632 _arm_elf_section_data structure - has not been allocated. */
11633 static section_list
* sections_with_arm_elf_section_data
= NULL
;
11636 record_section_with_arm_elf_section_data (asection
* sec
)
11638 struct section_list
* entry
;
11640 entry
= bfd_malloc (sizeof (* entry
));
11644 entry
->next
= sections_with_arm_elf_section_data
;
11645 entry
->prev
= NULL
;
11646 if (entry
->next
!= NULL
)
11647 entry
->next
->prev
= entry
;
11648 sections_with_arm_elf_section_data
= entry
;
11651 static struct section_list
*
11652 find_arm_elf_section_entry (asection
* sec
)
11654 struct section_list
* entry
;
11655 static struct section_list
* last_entry
= NULL
;
11657 /* This is a short cut for the typical case where the sections are added
11658 to the sections_with_arm_elf_section_data list in forward order and
11659 then looked up here in backwards order. This makes a real difference
11660 to the ld-srec/sec64k.exp linker test. */
11661 entry
= sections_with_arm_elf_section_data
;
11662 if (last_entry
!= NULL
)
11664 if (last_entry
->sec
== sec
)
11665 entry
= last_entry
;
11666 else if (last_entry
->next
!= NULL
11667 && last_entry
->next
->sec
== sec
)
11668 entry
= last_entry
->next
;
11671 for (; entry
; entry
= entry
->next
)
11672 if (entry
->sec
== sec
)
11676 /* Record the entry prior to this one - it is the entry we are most
11677 likely to want to locate next time. Also this way if we have been
11678 called from unrecord_section_with_arm_elf_section_data() we will not
11679 be caching a pointer that is about to be freed. */
11680 last_entry
= entry
->prev
;
11685 static _arm_elf_section_data
*
11686 get_arm_elf_section_data (asection
* sec
)
11688 struct section_list
* entry
;
11690 entry
= find_arm_elf_section_entry (sec
);
11693 return elf32_arm_section_data (entry
->sec
);
11699 unrecord_section_with_arm_elf_section_data (asection
* sec
)
11701 struct section_list
* entry
;
11703 entry
= find_arm_elf_section_entry (sec
);
11707 if (entry
->prev
!= NULL
)
11708 entry
->prev
->next
= entry
->next
;
11709 if (entry
->next
!= NULL
)
11710 entry
->next
->prev
= entry
->prev
;
11711 if (entry
== sections_with_arm_elf_section_data
)
11712 sections_with_arm_elf_section_data
= entry
->next
;
11721 struct bfd_link_info
*info
;
11724 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
11725 asection
*, struct elf_link_hash_entry
*);
11726 } output_arch_syminfo
;
11728 enum map_symbol_type
11736 /* Output a single mapping symbol. */
11739 elf32_arm_output_map_sym (output_arch_syminfo
*osi
,
11740 enum map_symbol_type type
,
11743 static const char *names
[3] = {"$a", "$t", "$d"};
11744 struct elf32_arm_link_hash_table
*htab
;
11745 Elf_Internal_Sym sym
;
11747 htab
= elf32_arm_hash_table (osi
->info
);
11748 sym
.st_value
= osi
->sec
->output_section
->vma
11749 + osi
->sec
->output_offset
11753 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
11754 sym
.st_shndx
= osi
->sec_shndx
;
11755 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
))
11761 /* Output mapping symbols for PLT entries associated with H. */
11764 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
11766 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
11767 struct elf32_arm_link_hash_table
*htab
;
11768 struct elf32_arm_link_hash_entry
*eh
;
11771 htab
= elf32_arm_hash_table (osi
->info
);
11773 if (h
->root
.type
== bfd_link_hash_indirect
)
11776 if (h
->root
.type
== bfd_link_hash_warning
)
11777 /* When warning symbols are created, they **replace** the "real"
11778 entry in the hash table, thus we never get to see the real
11779 symbol in a hash traversal. So look at it now. */
11780 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
11782 if (h
->plt
.offset
== (bfd_vma
) -1)
11785 eh
= (struct elf32_arm_link_hash_entry
*) h
;
11786 addr
= h
->plt
.offset
;
11787 if (htab
->symbian_p
)
11789 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_ARM
, addr
))
11791 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
11794 else if (htab
->vxworks_p
)
11796 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_ARM
, addr
))
11798 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
11800 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
11802 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
11807 bfd_signed_vma thumb_refs
;
11809 thumb_refs
= eh
->plt_thumb_refcount
;
11810 if (!htab
->use_blx
)
11811 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
11813 if (thumb_refs
> 0)
11815 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
11818 #ifdef FOUR_WORD_PLT
11819 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_ARM
, addr
))
11821 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
11824 /* A three-word PLT with no Thumb thunk contains only Arm code,
11825 so only need to output a mapping symbol for the first PLT entry and
11826 entries with thumb thunks. */
11827 if (thumb_refs
> 0 || addr
== 20)
11829 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_ARM
, addr
))
11838 /* Output a single local symbol for a generated stub. */
11841 elf32_arm_output_stub_sym (output_arch_syminfo
*osi
, const char *name
,
11842 bfd_vma offset
, bfd_vma size
)
11844 struct elf32_arm_link_hash_table
*htab
;
11845 Elf_Internal_Sym sym
;
11847 htab
= elf32_arm_hash_table (osi
->info
);
11848 sym
.st_value
= osi
->sec
->output_section
->vma
11849 + osi
->sec
->output_offset
11851 sym
.st_size
= size
;
11853 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
11854 sym
.st_shndx
= osi
->sec_shndx
;
11855 if (!osi
->func (osi
->finfo
, name
, &sym
, osi
->sec
, NULL
))
11861 arm_map_one_stub (struct bfd_hash_entry
* gen_entry
,
11864 struct elf32_arm_stub_hash_entry
*stub_entry
;
11865 struct bfd_link_info
*info
;
11866 struct elf32_arm_link_hash_table
*htab
;
11867 asection
*stub_sec
;
11870 output_arch_syminfo
*osi
;
11871 const insn_sequence
*template;
11872 enum stub_insn_type prev_type
;
11875 enum map_symbol_type sym_type
;
11877 /* Massage our args to the form they really have. */
11878 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
11879 osi
= (output_arch_syminfo
*) in_arg
;
11883 htab
= elf32_arm_hash_table (info
);
11884 stub_sec
= stub_entry
->stub_sec
;
11886 /* Ensure this stub is attached to the current section being
11888 if (stub_sec
!= osi
->sec
)
11891 addr
= (bfd_vma
) stub_entry
->stub_offset
;
11892 stub_name
= stub_entry
->output_name
;
11894 template = stub_entry
->stub_template
;
11895 switch (template[0].type
)
11898 if (!elf32_arm_output_stub_sym (osi
, stub_name
, addr
, stub_entry
->stub_size
))
11902 if (!elf32_arm_output_stub_sym (osi
, stub_name
, addr
| 1,
11903 stub_entry
->stub_size
))
11911 prev_type
= DATA_TYPE
;
11913 for (i
= 0; i
< stub_entry
->stub_template_size
; i
++)
11915 switch (template[i
].type
)
11918 sym_type
= ARM_MAP_ARM
;
11922 sym_type
= ARM_MAP_THUMB
;
11926 sym_type
= ARM_MAP_DATA
;
11934 if (template[i
].type
!= prev_type
)
11936 prev_type
= template[i
].type
;
11937 if (!elf32_arm_output_map_sym (osi
, sym_type
, addr
+ size
))
11941 switch (template[i
].type
)
11964 /* Output mapping symbols for linker generated sections. */
11967 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
11968 struct bfd_link_info
*info
,
11970 bfd_boolean (*func
) (void *, const char *,
11971 Elf_Internal_Sym
*,
11973 struct elf_link_hash_entry
*))
11975 output_arch_syminfo osi
;
11976 struct elf32_arm_link_hash_table
*htab
;
11978 bfd_size_type size
;
11980 htab
= elf32_arm_hash_table (info
);
11981 check_use_blx (htab
);
11987 /* ARM->Thumb glue. */
11988 if (htab
->arm_glue_size
> 0)
11990 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
11991 ARM2THUMB_GLUE_SECTION_NAME
);
11993 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11994 (output_bfd
, osi
.sec
->output_section
);
11995 if (info
->shared
|| htab
->root
.is_relocatable_executable
11996 || htab
->pic_veneer
)
11997 size
= ARM2THUMB_PIC_GLUE_SIZE
;
11998 else if (htab
->use_blx
)
11999 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
12001 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
12003 for (offset
= 0; offset
< htab
->arm_glue_size
; offset
+= size
)
12005 elf32_arm_output_map_sym (&osi
, ARM_MAP_ARM
, offset
);
12006 elf32_arm_output_map_sym (&osi
, ARM_MAP_DATA
, offset
+ size
- 4);
12010 /* Thumb->ARM glue. */
12011 if (htab
->thumb_glue_size
> 0)
12013 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
12014 THUMB2ARM_GLUE_SECTION_NAME
);
12016 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
12017 (output_bfd
, osi
.sec
->output_section
);
12018 size
= THUMB2ARM_GLUE_SIZE
;
12020 for (offset
= 0; offset
< htab
->thumb_glue_size
; offset
+= size
)
12022 elf32_arm_output_map_sym (&osi
, ARM_MAP_THUMB
, offset
);
12023 elf32_arm_output_map_sym (&osi
, ARM_MAP_ARM
, offset
+ 4);
12027 /* ARMv4 BX veneers. */
12028 if (htab
->bx_glue_size
> 0)
12030 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
12031 ARM_BX_GLUE_SECTION_NAME
);
12033 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
12034 (output_bfd
, osi
.sec
->output_section
);
12036 elf32_arm_output_map_sym (&osi
, ARM_MAP_ARM
, 0);
12039 /* Long calls stubs. */
12040 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
)
12042 asection
* stub_sec
;
12044 for (stub_sec
= htab
->stub_bfd
->sections
;
12046 stub_sec
= stub_sec
->next
)
12048 /* Ignore non-stub sections. */
12049 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
12052 osi
.sec
= stub_sec
;
12054 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
12055 (output_bfd
, osi
.sec
->output_section
);
12057 bfd_hash_traverse (&htab
->stub_hash_table
, arm_map_one_stub
, &osi
);
12061 /* Finally, output mapping symbols for the PLT. */
12062 if (!htab
->splt
|| htab
->splt
->size
== 0)
12065 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
12066 htab
->splt
->output_section
);
12067 osi
.sec
= htab
->splt
;
12068 /* Output mapping symbols for the plt header. SymbianOS does not have a
12070 if (htab
->vxworks_p
)
12072 /* VxWorks shared libraries have no PLT header. */
12075 if (!elf32_arm_output_map_sym (&osi
, ARM_MAP_ARM
, 0))
12077 if (!elf32_arm_output_map_sym (&osi
, ARM_MAP_DATA
, 12))
12081 else if (!htab
->symbian_p
)
12083 if (!elf32_arm_output_map_sym (&osi
, ARM_MAP_ARM
, 0))
12085 #ifndef FOUR_WORD_PLT
12086 if (!elf32_arm_output_map_sym (&osi
, ARM_MAP_DATA
, 16))
12091 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
12095 /* Allocate target specific section data. */
12098 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
12100 if (!sec
->used_by_bfd
)
12102 _arm_elf_section_data
*sdata
;
12103 bfd_size_type amt
= sizeof (*sdata
);
12105 sdata
= bfd_zalloc (abfd
, amt
);
12108 sec
->used_by_bfd
= sdata
;
12111 record_section_with_arm_elf_section_data (sec
);
12113 return _bfd_elf_new_section_hook (abfd
, sec
);
12117 /* Used to order a list of mapping symbols by address. */
12120 elf32_arm_compare_mapping (const void * a
, const void * b
)
12122 const elf32_arm_section_map
*amap
= (const elf32_arm_section_map
*) a
;
12123 const elf32_arm_section_map
*bmap
= (const elf32_arm_section_map
*) b
;
12125 if (amap
->vma
> bmap
->vma
)
12127 else if (amap
->vma
< bmap
->vma
)
12129 else if (amap
->type
> bmap
->type
)
12130 /* Ensure results do not depend on the host qsort for objects with
12131 multiple mapping symbols at the same address by sorting on type
12134 else if (amap
->type
< bmap
->type
)
12141 /* Do code byteswapping. Return FALSE afterwards so that the section is
12142 written out as normal. */
12145 elf32_arm_write_section (bfd
*output_bfd
,
12146 struct bfd_link_info
*link_info
,
12148 bfd_byte
*contents
)
12150 int mapcount
, errcount
;
12151 _arm_elf_section_data
*arm_data
;
12152 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
12153 elf32_arm_section_map
*map
;
12154 elf32_vfp11_erratum_list
*errnode
;
12157 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
12161 /* If this section has not been allocated an _arm_elf_section_data
12162 structure then we cannot record anything. */
12163 arm_data
= get_arm_elf_section_data (sec
);
12164 if (arm_data
== NULL
)
12167 mapcount
= arm_data
->mapcount
;
12168 map
= arm_data
->map
;
12169 errcount
= arm_data
->erratumcount
;
12173 unsigned int endianflip
= bfd_big_endian (output_bfd
) ? 3 : 0;
12175 for (errnode
= arm_data
->erratumlist
; errnode
!= 0;
12176 errnode
= errnode
->next
)
12178 bfd_vma index
= errnode
->vma
- offset
;
12180 switch (errnode
->type
)
12182 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
12184 bfd_vma branch_to_veneer
;
12185 /* Original condition code of instruction, plus bit mask for
12186 ARM B instruction. */
12187 unsigned int insn
= (errnode
->u
.b
.vfp_insn
& 0xf0000000)
12190 /* The instruction is before the label. */
12193 /* Above offset included in -4 below. */
12194 branch_to_veneer
= errnode
->u
.b
.veneer
->vma
12195 - errnode
->vma
- 4;
12197 if ((signed) branch_to_veneer
< -(1 << 25)
12198 || (signed) branch_to_veneer
>= (1 << 25))
12199 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
12200 "range"), output_bfd
);
12202 insn
|= (branch_to_veneer
>> 2) & 0xffffff;
12203 contents
[endianflip
^ index
] = insn
& 0xff;
12204 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
12205 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
12206 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
12210 case VFP11_ERRATUM_ARM_VENEER
:
12212 bfd_vma branch_from_veneer
;
12215 /* Take size of veneer into account. */
12216 branch_from_veneer
= errnode
->u
.v
.branch
->vma
12217 - errnode
->vma
- 12;
12219 if ((signed) branch_from_veneer
< -(1 << 25)
12220 || (signed) branch_from_veneer
>= (1 << 25))
12221 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
12222 "range"), output_bfd
);
12224 /* Original instruction. */
12225 insn
= errnode
->u
.v
.branch
->u
.b
.vfp_insn
;
12226 contents
[endianflip
^ index
] = insn
& 0xff;
12227 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
12228 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
12229 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
12231 /* Branch back to insn after original insn. */
12232 insn
= 0xea000000 | ((branch_from_veneer
>> 2) & 0xffffff);
12233 contents
[endianflip
^ (index
+ 4)] = insn
& 0xff;
12234 contents
[endianflip
^ (index
+ 5)] = (insn
>> 8) & 0xff;
12235 contents
[endianflip
^ (index
+ 6)] = (insn
>> 16) & 0xff;
12236 contents
[endianflip
^ (index
+ 7)] = (insn
>> 24) & 0xff;
12249 if (globals
->byteswap_code
)
12251 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
12254 for (i
= 0; i
< mapcount
; i
++)
12256 if (i
== mapcount
- 1)
12259 end
= map
[i
+ 1].vma
;
12261 switch (map
[i
].type
)
12264 /* Byte swap code words. */
12265 while (ptr
+ 3 < end
)
12267 tmp
= contents
[ptr
];
12268 contents
[ptr
] = contents
[ptr
+ 3];
12269 contents
[ptr
+ 3] = tmp
;
12270 tmp
= contents
[ptr
+ 1];
12271 contents
[ptr
+ 1] = contents
[ptr
+ 2];
12272 contents
[ptr
+ 2] = tmp
;
12278 /* Byte swap code halfwords. */
12279 while (ptr
+ 1 < end
)
12281 tmp
= contents
[ptr
];
12282 contents
[ptr
] = contents
[ptr
+ 1];
12283 contents
[ptr
+ 1] = tmp
;
12289 /* Leave data alone. */
12297 arm_data
->mapcount
= 0;
12298 arm_data
->mapsize
= 0;
12299 arm_data
->map
= NULL
;
12300 unrecord_section_with_arm_elf_section_data (sec
);
12306 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
12308 void * ignore ATTRIBUTE_UNUSED
)
12310 unrecord_section_with_arm_elf_section_data (sec
);
12314 elf32_arm_close_and_cleanup (bfd
* abfd
)
12316 if (abfd
->sections
)
12317 bfd_map_over_sections (abfd
,
12318 unrecord_section_via_map_over_sections
,
12321 return _bfd_elf_close_and_cleanup (abfd
);
12325 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
12327 if (abfd
->sections
)
12328 bfd_map_over_sections (abfd
,
12329 unrecord_section_via_map_over_sections
,
12332 return _bfd_free_cached_info (abfd
);
12335 /* Display STT_ARM_TFUNC symbols as functions. */
12338 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
12341 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
12343 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
12344 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
12348 /* Mangle thumb function symbols as we read them in. */
12351 elf32_arm_swap_symbol_in (bfd
* abfd
,
12354 Elf_Internal_Sym
*dst
)
12356 if (!bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
12359 /* New EABI objects mark thumb function symbols by setting the low bit of
12360 the address. Turn these into STT_ARM_TFUNC. */
12361 if ((ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
)
12362 && (dst
->st_value
& 1))
12364 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
12365 dst
->st_value
&= ~(bfd_vma
) 1;
12371 /* Mangle thumb function symbols as we write them out. */
12374 elf32_arm_swap_symbol_out (bfd
*abfd
,
12375 const Elf_Internal_Sym
*src
,
12379 Elf_Internal_Sym newsym
;
12381 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
12382 of the address set, as per the new EABI. We do this unconditionally
12383 because objcopy does not set the elf header flags until after
12384 it writes out the symbol table. */
12385 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
12388 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
12389 if (newsym
.st_shndx
!= SHN_UNDEF
)
12391 /* Do this only for defined symbols. At link type, the static
12392 linker will simulate the work of dynamic linker of resolving
12393 symbols and will carry over the thumbness of found symbols to
12394 the output symbol table. It's not clear how it happens, but
12395 the thumbness of undefined symbols can well be different at
12396 runtime, and writing '1' for them will be confusing for users
12397 and possibly for dynamic linker itself.
12399 newsym
.st_value
|= 1;
12404 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
12407 /* Add the PT_ARM_EXIDX program header. */
12410 elf32_arm_modify_segment_map (bfd
*abfd
,
12411 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
12413 struct elf_segment_map
*m
;
12416 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
12417 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
12419 /* If there is already a PT_ARM_EXIDX header, then we do not
12420 want to add another one. This situation arises when running
12421 "strip"; the input binary already has the header. */
12422 m
= elf_tdata (abfd
)->segment_map
;
12423 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
12427 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
12430 m
->p_type
= PT_ARM_EXIDX
;
12432 m
->sections
[0] = sec
;
12434 m
->next
= elf_tdata (abfd
)->segment_map
;
12435 elf_tdata (abfd
)->segment_map
= m
;
12442 /* We may add a PT_ARM_EXIDX program header. */
12445 elf32_arm_additional_program_headers (bfd
*abfd
,
12446 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
12450 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
12451 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
12457 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
12460 elf32_arm_is_function_type (unsigned int type
)
12462 return (type
== STT_FUNC
) || (type
== STT_ARM_TFUNC
);
12465 /* We use this to override swap_symbol_in and swap_symbol_out. */
12466 const struct elf_size_info elf32_arm_size_info
=
12468 sizeof (Elf32_External_Ehdr
),
12469 sizeof (Elf32_External_Phdr
),
12470 sizeof (Elf32_External_Shdr
),
12471 sizeof (Elf32_External_Rel
),
12472 sizeof (Elf32_External_Rela
),
12473 sizeof (Elf32_External_Sym
),
12474 sizeof (Elf32_External_Dyn
),
12475 sizeof (Elf_External_Note
),
12479 ELFCLASS32
, EV_CURRENT
,
12480 bfd_elf32_write_out_phdrs
,
12481 bfd_elf32_write_shdrs_and_ehdr
,
12482 bfd_elf32_checksum_contents
,
12483 bfd_elf32_write_relocs
,
12484 elf32_arm_swap_symbol_in
,
12485 elf32_arm_swap_symbol_out
,
12486 bfd_elf32_slurp_reloc_table
,
12487 bfd_elf32_slurp_symbol_table
,
12488 bfd_elf32_swap_dyn_in
,
12489 bfd_elf32_swap_dyn_out
,
12490 bfd_elf32_swap_reloc_in
,
12491 bfd_elf32_swap_reloc_out
,
12492 bfd_elf32_swap_reloca_in
,
12493 bfd_elf32_swap_reloca_out
12496 #define ELF_ARCH bfd_arch_arm
12497 #define ELF_MACHINE_CODE EM_ARM
12498 #ifdef __QNXTARGET__
12499 #define ELF_MAXPAGESIZE 0x1000
12501 #define ELF_MAXPAGESIZE 0x8000
12503 #define ELF_MINPAGESIZE 0x1000
12504 #define ELF_COMMONPAGESIZE 0x1000
12506 #define bfd_elf32_mkobject elf32_arm_mkobject
12508 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
12509 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
12510 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
12511 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
12512 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
12513 #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
12514 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
12515 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
12516 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
12517 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
12518 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
12519 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
12520 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
12521 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
12523 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
12524 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
12525 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
12526 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
12527 #define elf_backend_check_relocs elf32_arm_check_relocs
12528 #define elf_backend_relocate_section elf32_arm_relocate_section
12529 #define elf_backend_write_section elf32_arm_write_section
12530 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
12531 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
12532 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
12533 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
12534 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
12535 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
12536 #define elf_backend_post_process_headers elf32_arm_post_process_headers
12537 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
12538 #define elf_backend_object_p elf32_arm_object_p
12539 #define elf_backend_section_flags elf32_arm_section_flags
12540 #define elf_backend_fake_sections elf32_arm_fake_sections
12541 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
12542 #define elf_backend_final_write_processing elf32_arm_final_write_processing
12543 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
12544 #define elf_backend_symbol_processing elf32_arm_symbol_processing
12545 #define elf_backend_size_info elf32_arm_size_info
12546 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
12547 #define elf_backend_additional_program_headers elf32_arm_additional_program_headers
12548 #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
12549 #define elf_backend_begin_write_processing elf32_arm_begin_write_processing
12550 #define elf_backend_is_function_type elf32_arm_is_function_type
12552 #define elf_backend_can_refcount 1
12553 #define elf_backend_can_gc_sections 1
12554 #define elf_backend_plt_readonly 1
12555 #define elf_backend_want_got_plt 1
12556 #define elf_backend_want_plt_sym 0
12557 #define elf_backend_may_use_rel_p 1
12558 #define elf_backend_may_use_rela_p 0
12559 #define elf_backend_default_use_rela_p 0
12561 #define elf_backend_got_header_size 12
12563 #undef elf_backend_obj_attrs_vendor
12564 #define elf_backend_obj_attrs_vendor "aeabi"
12565 #undef elf_backend_obj_attrs_section
12566 #define elf_backend_obj_attrs_section ".ARM.attributes"
12567 #undef elf_backend_obj_attrs_arg_type
12568 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
12569 #undef elf_backend_obj_attrs_section_type
12570 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
12571 #define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order
12573 #include "elf32-target.h"
12575 /* VxWorks Targets. */
12577 #undef TARGET_LITTLE_SYM
12578 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
12579 #undef TARGET_LITTLE_NAME
12580 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
12581 #undef TARGET_BIG_SYM
12582 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
12583 #undef TARGET_BIG_NAME
12584 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
12586 /* Like elf32_arm_link_hash_table_create -- but overrides
12587 appropriately for VxWorks. */
12589 static struct bfd_link_hash_table
*
12590 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
12592 struct bfd_link_hash_table
*ret
;
12594 ret
= elf32_arm_link_hash_table_create (abfd
);
12597 struct elf32_arm_link_hash_table
*htab
12598 = (struct elf32_arm_link_hash_table
*) ret
;
12600 htab
->vxworks_p
= 1;
12606 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
12608 elf32_arm_final_write_processing (abfd
, linker
);
12609 elf_vxworks_final_write_processing (abfd
, linker
);
12613 #define elf32_bed elf32_arm_vxworks_bed
12615 #undef bfd_elf32_bfd_link_hash_table_create
12616 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
12617 #undef elf_backend_add_symbol_hook
12618 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
12619 #undef elf_backend_final_write_processing
12620 #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
12621 #undef elf_backend_emit_relocs
12622 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
12624 #undef elf_backend_may_use_rel_p
12625 #define elf_backend_may_use_rel_p 0
12626 #undef elf_backend_may_use_rela_p
12627 #define elf_backend_may_use_rela_p 1
12628 #undef elf_backend_default_use_rela_p
12629 #define elf_backend_default_use_rela_p 1
12630 #undef elf_backend_want_plt_sym
12631 #define elf_backend_want_plt_sym 1
12632 #undef ELF_MAXPAGESIZE
12633 #define ELF_MAXPAGESIZE 0x1000
12635 #include "elf32-target.h"
12638 /* Symbian OS Targets. */
12640 #undef TARGET_LITTLE_SYM
12641 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
12642 #undef TARGET_LITTLE_NAME
12643 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
12644 #undef TARGET_BIG_SYM
12645 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
12646 #undef TARGET_BIG_NAME
12647 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
12649 /* Like elf32_arm_link_hash_table_create -- but overrides
12650 appropriately for Symbian OS. */
12652 static struct bfd_link_hash_table
*
12653 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
12655 struct bfd_link_hash_table
*ret
;
12657 ret
= elf32_arm_link_hash_table_create (abfd
);
12660 struct elf32_arm_link_hash_table
*htab
12661 = (struct elf32_arm_link_hash_table
*)ret
;
12662 /* There is no PLT header for Symbian OS. */
12663 htab
->plt_header_size
= 0;
12664 /* The PLT entries are each one instruction and one word. */
12665 htab
->plt_entry_size
= 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry
);
12666 htab
->symbian_p
= 1;
12667 /* Symbian uses armv5t or above, so use_blx is always true. */
12669 htab
->root
.is_relocatable_executable
= 1;
12674 static const struct bfd_elf_special_section
12675 elf32_arm_symbian_special_sections
[] =
12677 /* In a BPABI executable, the dynamic linking sections do not go in
12678 the loadable read-only segment. The post-linker may wish to
12679 refer to these sections, but they are not part of the final
12681 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC
, 0 },
12682 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB
, 0 },
12683 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM
, 0 },
12684 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS
, 0 },
12685 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH
, 0 },
12686 /* These sections do not need to be writable as the SymbianOS
12687 postlinker will arrange things so that no dynamic relocation is
12689 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
12690 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
12691 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
12692 { NULL
, 0, 0, 0, 0 }
12696 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
12697 struct bfd_link_info
*link_info
)
12699 /* BPABI objects are never loaded directly by an OS kernel; they are
12700 processed by a postlinker first, into an OS-specific format. If
12701 the D_PAGED bit is set on the file, BFD will align segments on
12702 page boundaries, so that an OS can directly map the file. With
12703 BPABI objects, that just results in wasted space. In addition,
12704 because we clear the D_PAGED bit, map_sections_to_segments will
12705 recognize that the program headers should not be mapped into any
12706 loadable segment. */
12707 abfd
->flags
&= ~D_PAGED
;
12708 elf32_arm_begin_write_processing (abfd
, link_info
);
12712 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
12713 struct bfd_link_info
*info
)
12715 struct elf_segment_map
*m
;
12718 /* BPABI shared libraries and executables should have a PT_DYNAMIC
12719 segment. However, because the .dynamic section is not marked
12720 with SEC_LOAD, the generic ELF code will not create such a
12722 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
12725 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
12726 if (m
->p_type
== PT_DYNAMIC
)
12731 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
12732 m
->next
= elf_tdata (abfd
)->segment_map
;
12733 elf_tdata (abfd
)->segment_map
= m
;
12737 /* Also call the generic arm routine. */
12738 return elf32_arm_modify_segment_map (abfd
, info
);
12741 /* Return address for Ith PLT stub in section PLT, for relocation REL
12742 or (bfd_vma) -1 if it should not be included. */
12745 elf32_arm_symbian_plt_sym_val (bfd_vma i
, const asection
*plt
,
12746 const arelent
*rel ATTRIBUTE_UNUSED
)
12748 return plt
->vma
+ 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry
) * i
;
12753 #define elf32_bed elf32_arm_symbian_bed
12755 /* The dynamic sections are not allocated on SymbianOS; the postlinker
12756 will process them and then discard them. */
12757 #undef ELF_DYNAMIC_SEC_FLAGS
12758 #define ELF_DYNAMIC_SEC_FLAGS \
12759 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
12761 #undef elf_backend_add_symbol_hook
12762 #undef elf_backend_emit_relocs
12764 #undef bfd_elf32_bfd_link_hash_table_create
12765 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
12766 #undef elf_backend_special_sections
12767 #define elf_backend_special_sections elf32_arm_symbian_special_sections
12768 #undef elf_backend_begin_write_processing
12769 #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
12770 #undef elf_backend_final_write_processing
12771 #define elf_backend_final_write_processing elf32_arm_final_write_processing
12773 #undef elf_backend_modify_segment_map
12774 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
12776 /* There is no .got section for BPABI objects, and hence no header. */
12777 #undef elf_backend_got_header_size
12778 #define elf_backend_got_header_size 0
12780 /* Similarly, there is no .got.plt section. */
12781 #undef elf_backend_want_got_plt
12782 #define elf_backend_want_got_plt 0
12784 #undef elf_backend_plt_sym_val
12785 #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
12787 #undef elf_backend_may_use_rel_p
12788 #define elf_backend_may_use_rel_p 1
12789 #undef elf_backend_may_use_rela_p
12790 #define elf_backend_may_use_rela_p 0
12791 #undef elf_backend_default_use_rela_p
12792 #define elf_backend_default_use_rela_p 0
12793 #undef elf_backend_want_plt_sym
12794 #define elf_backend_want_plt_sym 0
12795 #undef ELF_MAXPAGESIZE
12796 #define ELF_MAXPAGESIZE 0x8000
12798 #include "elf32-target.h"