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"
31 #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
34 /* Return the relocation section associated with NAME. HTAB is the
35 bfd's elf32_arm_link_hash_entry. */
36 #define RELOC_SECTION(HTAB, NAME) \
37 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
39 /* Return size of a relocation entry. HTAB is the bfd's
40 elf32_arm_link_hash_entry. */
41 #define RELOC_SIZE(HTAB) \
43 ? sizeof (Elf32_External_Rel) \
44 : sizeof (Elf32_External_Rela))
46 /* Return function to swap relocations in. HTAB is the bfd's
47 elf32_arm_link_hash_entry. */
48 #define SWAP_RELOC_IN(HTAB) \
50 ? bfd_elf32_swap_reloc_in \
51 : bfd_elf32_swap_reloca_in)
53 /* Return function to swap relocations out. HTAB is the bfd's
54 elf32_arm_link_hash_entry. */
55 #define SWAP_RELOC_OUT(HTAB) \
57 ? bfd_elf32_swap_reloc_out \
58 : bfd_elf32_swap_reloca_out)
60 #define elf_info_to_howto 0
61 #define elf_info_to_howto_rel elf32_arm_info_to_howto
63 #define ARM_ELF_ABI_VERSION 0
64 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
66 static struct elf_backend_data elf32_arm_vxworks_bed
;
68 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
69 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
72 static reloc_howto_type elf32_arm_howto_table_1
[] =
75 HOWTO (R_ARM_NONE
, /* type */
77 0, /* size (0 = byte, 1 = short, 2 = long) */
79 FALSE
, /* pc_relative */
81 complain_overflow_dont
,/* complain_on_overflow */
82 bfd_elf_generic_reloc
, /* special_function */
83 "R_ARM_NONE", /* name */
84 FALSE
, /* partial_inplace */
87 FALSE
), /* pcrel_offset */
89 HOWTO (R_ARM_PC24
, /* type */
91 2, /* size (0 = byte, 1 = short, 2 = long) */
93 TRUE
, /* pc_relative */
95 complain_overflow_signed
,/* complain_on_overflow */
96 bfd_elf_generic_reloc
, /* special_function */
97 "R_ARM_PC24", /* name */
98 FALSE
, /* partial_inplace */
99 0x00ffffff, /* src_mask */
100 0x00ffffff, /* dst_mask */
101 TRUE
), /* pcrel_offset */
103 /* 32 bit absolute */
104 HOWTO (R_ARM_ABS32
, /* type */
106 2, /* size (0 = byte, 1 = short, 2 = long) */
108 FALSE
, /* pc_relative */
110 complain_overflow_bitfield
,/* complain_on_overflow */
111 bfd_elf_generic_reloc
, /* special_function */
112 "R_ARM_ABS32", /* name */
113 FALSE
, /* partial_inplace */
114 0xffffffff, /* src_mask */
115 0xffffffff, /* dst_mask */
116 FALSE
), /* pcrel_offset */
118 /* standard 32bit pc-relative reloc */
119 HOWTO (R_ARM_REL32
, /* type */
121 2, /* size (0 = byte, 1 = short, 2 = long) */
123 TRUE
, /* pc_relative */
125 complain_overflow_bitfield
,/* complain_on_overflow */
126 bfd_elf_generic_reloc
, /* special_function */
127 "R_ARM_REL32", /* name */
128 FALSE
, /* partial_inplace */
129 0xffffffff, /* src_mask */
130 0xffffffff, /* dst_mask */
131 TRUE
), /* pcrel_offset */
133 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
134 HOWTO (R_ARM_LDR_PC_G0
, /* type */
136 0, /* size (0 = byte, 1 = short, 2 = long) */
138 TRUE
, /* pc_relative */
140 complain_overflow_dont
,/* complain_on_overflow */
141 bfd_elf_generic_reloc
, /* special_function */
142 "R_ARM_LDR_PC_G0", /* name */
143 FALSE
, /* partial_inplace */
144 0xffffffff, /* src_mask */
145 0xffffffff, /* dst_mask */
146 TRUE
), /* pcrel_offset */
148 /* 16 bit absolute */
149 HOWTO (R_ARM_ABS16
, /* type */
151 1, /* size (0 = byte, 1 = short, 2 = long) */
153 FALSE
, /* pc_relative */
155 complain_overflow_bitfield
,/* complain_on_overflow */
156 bfd_elf_generic_reloc
, /* special_function */
157 "R_ARM_ABS16", /* name */
158 FALSE
, /* partial_inplace */
159 0x0000ffff, /* src_mask */
160 0x0000ffff, /* dst_mask */
161 FALSE
), /* pcrel_offset */
163 /* 12 bit absolute */
164 HOWTO (R_ARM_ABS12
, /* type */
166 2, /* size (0 = byte, 1 = short, 2 = long) */
168 FALSE
, /* pc_relative */
170 complain_overflow_bitfield
,/* complain_on_overflow */
171 bfd_elf_generic_reloc
, /* special_function */
172 "R_ARM_ABS12", /* name */
173 FALSE
, /* partial_inplace */
174 0x00000fff, /* src_mask */
175 0x00000fff, /* dst_mask */
176 FALSE
), /* pcrel_offset */
178 HOWTO (R_ARM_THM_ABS5
, /* type */
180 1, /* size (0 = byte, 1 = short, 2 = long) */
182 FALSE
, /* pc_relative */
184 complain_overflow_bitfield
,/* complain_on_overflow */
185 bfd_elf_generic_reloc
, /* special_function */
186 "R_ARM_THM_ABS5", /* name */
187 FALSE
, /* partial_inplace */
188 0x000007e0, /* src_mask */
189 0x000007e0, /* dst_mask */
190 FALSE
), /* pcrel_offset */
193 HOWTO (R_ARM_ABS8
, /* type */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
197 FALSE
, /* pc_relative */
199 complain_overflow_bitfield
,/* complain_on_overflow */
200 bfd_elf_generic_reloc
, /* special_function */
201 "R_ARM_ABS8", /* name */
202 FALSE
, /* partial_inplace */
203 0x000000ff, /* src_mask */
204 0x000000ff, /* dst_mask */
205 FALSE
), /* pcrel_offset */
207 HOWTO (R_ARM_SBREL32
, /* type */
209 2, /* size (0 = byte, 1 = short, 2 = long) */
211 FALSE
, /* pc_relative */
213 complain_overflow_dont
,/* complain_on_overflow */
214 bfd_elf_generic_reloc
, /* special_function */
215 "R_ARM_SBREL32", /* name */
216 FALSE
, /* partial_inplace */
217 0xffffffff, /* src_mask */
218 0xffffffff, /* dst_mask */
219 FALSE
), /* pcrel_offset */
221 HOWTO (R_ARM_THM_CALL
, /* type */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
225 TRUE
, /* pc_relative */
227 complain_overflow_signed
,/* complain_on_overflow */
228 bfd_elf_generic_reloc
, /* special_function */
229 "R_ARM_THM_CALL", /* name */
230 FALSE
, /* partial_inplace */
231 0x07ff07ff, /* src_mask */
232 0x07ff07ff, /* dst_mask */
233 TRUE
), /* pcrel_offset */
235 HOWTO (R_ARM_THM_PC8
, /* type */
237 1, /* size (0 = byte, 1 = short, 2 = long) */
239 TRUE
, /* pc_relative */
241 complain_overflow_signed
,/* complain_on_overflow */
242 bfd_elf_generic_reloc
, /* special_function */
243 "R_ARM_THM_PC8", /* name */
244 FALSE
, /* partial_inplace */
245 0x000000ff, /* src_mask */
246 0x000000ff, /* dst_mask */
247 TRUE
), /* pcrel_offset */
249 HOWTO (R_ARM_BREL_ADJ
, /* type */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
253 FALSE
, /* pc_relative */
255 complain_overflow_signed
,/* complain_on_overflow */
256 bfd_elf_generic_reloc
, /* special_function */
257 "R_ARM_BREL_ADJ", /* name */
258 FALSE
, /* partial_inplace */
259 0xffffffff, /* src_mask */
260 0xffffffff, /* dst_mask */
261 FALSE
), /* pcrel_offset */
263 HOWTO (R_ARM_SWI24
, /* type */
265 0, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE
, /* pc_relative */
269 complain_overflow_signed
,/* complain_on_overflow */
270 bfd_elf_generic_reloc
, /* special_function */
271 "R_ARM_SWI24", /* name */
272 FALSE
, /* partial_inplace */
273 0x00000000, /* src_mask */
274 0x00000000, /* dst_mask */
275 FALSE
), /* pcrel_offset */
277 HOWTO (R_ARM_THM_SWI8
, /* type */
279 0, /* size (0 = byte, 1 = short, 2 = long) */
281 FALSE
, /* pc_relative */
283 complain_overflow_signed
,/* complain_on_overflow */
284 bfd_elf_generic_reloc
, /* special_function */
285 "R_ARM_SWI8", /* name */
286 FALSE
, /* partial_inplace */
287 0x00000000, /* src_mask */
288 0x00000000, /* dst_mask */
289 FALSE
), /* pcrel_offset */
291 /* BLX instruction for the ARM. */
292 HOWTO (R_ARM_XPC25
, /* type */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
296 TRUE
, /* pc_relative */
298 complain_overflow_signed
,/* complain_on_overflow */
299 bfd_elf_generic_reloc
, /* special_function */
300 "R_ARM_XPC25", /* name */
301 FALSE
, /* partial_inplace */
302 0x00ffffff, /* src_mask */
303 0x00ffffff, /* dst_mask */
304 TRUE
), /* pcrel_offset */
306 /* BLX instruction for the Thumb. */
307 HOWTO (R_ARM_THM_XPC22
, /* type */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
311 TRUE
, /* pc_relative */
313 complain_overflow_signed
,/* complain_on_overflow */
314 bfd_elf_generic_reloc
, /* special_function */
315 "R_ARM_THM_XPC22", /* name */
316 FALSE
, /* partial_inplace */
317 0x07ff07ff, /* src_mask */
318 0x07ff07ff, /* dst_mask */
319 TRUE
), /* pcrel_offset */
321 /* Dynamic TLS relocations. */
323 HOWTO (R_ARM_TLS_DTPMOD32
, /* type */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
327 FALSE
, /* pc_relative */
329 complain_overflow_bitfield
,/* complain_on_overflow */
330 bfd_elf_generic_reloc
, /* special_function */
331 "R_ARM_TLS_DTPMOD32", /* name */
332 TRUE
, /* partial_inplace */
333 0xffffffff, /* src_mask */
334 0xffffffff, /* dst_mask */
335 FALSE
), /* pcrel_offset */
337 HOWTO (R_ARM_TLS_DTPOFF32
, /* type */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
341 FALSE
, /* pc_relative */
343 complain_overflow_bitfield
,/* complain_on_overflow */
344 bfd_elf_generic_reloc
, /* special_function */
345 "R_ARM_TLS_DTPOFF32", /* name */
346 TRUE
, /* partial_inplace */
347 0xffffffff, /* src_mask */
348 0xffffffff, /* dst_mask */
349 FALSE
), /* pcrel_offset */
351 HOWTO (R_ARM_TLS_TPOFF32
, /* type */
353 2, /* size (0 = byte, 1 = short, 2 = long) */
355 FALSE
, /* pc_relative */
357 complain_overflow_bitfield
,/* complain_on_overflow */
358 bfd_elf_generic_reloc
, /* special_function */
359 "R_ARM_TLS_TPOFF32", /* name */
360 TRUE
, /* partial_inplace */
361 0xffffffff, /* src_mask */
362 0xffffffff, /* dst_mask */
363 FALSE
), /* pcrel_offset */
365 /* Relocs used in ARM Linux */
367 HOWTO (R_ARM_COPY
, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE
, /* pc_relative */
373 complain_overflow_bitfield
,/* complain_on_overflow */
374 bfd_elf_generic_reloc
, /* special_function */
375 "R_ARM_COPY", /* name */
376 TRUE
, /* partial_inplace */
377 0xffffffff, /* src_mask */
378 0xffffffff, /* dst_mask */
379 FALSE
), /* pcrel_offset */
381 HOWTO (R_ARM_GLOB_DAT
, /* type */
383 2, /* size (0 = byte, 1 = short, 2 = long) */
385 FALSE
, /* pc_relative */
387 complain_overflow_bitfield
,/* complain_on_overflow */
388 bfd_elf_generic_reloc
, /* special_function */
389 "R_ARM_GLOB_DAT", /* name */
390 TRUE
, /* partial_inplace */
391 0xffffffff, /* src_mask */
392 0xffffffff, /* dst_mask */
393 FALSE
), /* pcrel_offset */
395 HOWTO (R_ARM_JUMP_SLOT
, /* type */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
399 FALSE
, /* pc_relative */
401 complain_overflow_bitfield
,/* complain_on_overflow */
402 bfd_elf_generic_reloc
, /* special_function */
403 "R_ARM_JUMP_SLOT", /* name */
404 TRUE
, /* partial_inplace */
405 0xffffffff, /* src_mask */
406 0xffffffff, /* dst_mask */
407 FALSE
), /* pcrel_offset */
409 HOWTO (R_ARM_RELATIVE
, /* type */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE
, /* pc_relative */
415 complain_overflow_bitfield
,/* complain_on_overflow */
416 bfd_elf_generic_reloc
, /* special_function */
417 "R_ARM_RELATIVE", /* name */
418 TRUE
, /* partial_inplace */
419 0xffffffff, /* src_mask */
420 0xffffffff, /* dst_mask */
421 FALSE
), /* pcrel_offset */
423 HOWTO (R_ARM_GOTOFF32
, /* type */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
427 FALSE
, /* pc_relative */
429 complain_overflow_bitfield
,/* complain_on_overflow */
430 bfd_elf_generic_reloc
, /* special_function */
431 "R_ARM_GOTOFF32", /* name */
432 TRUE
, /* partial_inplace */
433 0xffffffff, /* src_mask */
434 0xffffffff, /* dst_mask */
435 FALSE
), /* pcrel_offset */
437 HOWTO (R_ARM_GOTPC
, /* type */
439 2, /* size (0 = byte, 1 = short, 2 = long) */
441 TRUE
, /* pc_relative */
443 complain_overflow_bitfield
,/* complain_on_overflow */
444 bfd_elf_generic_reloc
, /* special_function */
445 "R_ARM_GOTPC", /* name */
446 TRUE
, /* partial_inplace */
447 0xffffffff, /* src_mask */
448 0xffffffff, /* dst_mask */
449 TRUE
), /* pcrel_offset */
451 HOWTO (R_ARM_GOT32
, /* type */
453 2, /* size (0 = byte, 1 = short, 2 = long) */
455 FALSE
, /* pc_relative */
457 complain_overflow_bitfield
,/* complain_on_overflow */
458 bfd_elf_generic_reloc
, /* special_function */
459 "R_ARM_GOT32", /* name */
460 TRUE
, /* partial_inplace */
461 0xffffffff, /* src_mask */
462 0xffffffff, /* dst_mask */
463 FALSE
), /* pcrel_offset */
465 HOWTO (R_ARM_PLT32
, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE
, /* pc_relative */
471 complain_overflow_bitfield
,/* complain_on_overflow */
472 bfd_elf_generic_reloc
, /* special_function */
473 "R_ARM_PLT32", /* name */
474 FALSE
, /* partial_inplace */
475 0x00ffffff, /* src_mask */
476 0x00ffffff, /* dst_mask */
477 TRUE
), /* pcrel_offset */
479 HOWTO (R_ARM_CALL
, /* type */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
483 TRUE
, /* pc_relative */
485 complain_overflow_signed
,/* complain_on_overflow */
486 bfd_elf_generic_reloc
, /* special_function */
487 "R_ARM_CALL", /* name */
488 FALSE
, /* partial_inplace */
489 0x00ffffff, /* src_mask */
490 0x00ffffff, /* dst_mask */
491 TRUE
), /* pcrel_offset */
493 HOWTO (R_ARM_JUMP24
, /* type */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
497 TRUE
, /* pc_relative */
499 complain_overflow_signed
,/* complain_on_overflow */
500 bfd_elf_generic_reloc
, /* special_function */
501 "R_ARM_JUMP24", /* name */
502 FALSE
, /* partial_inplace */
503 0x00ffffff, /* src_mask */
504 0x00ffffff, /* dst_mask */
505 TRUE
), /* pcrel_offset */
507 HOWTO (R_ARM_THM_JUMP24
, /* type */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
511 TRUE
, /* pc_relative */
513 complain_overflow_signed
,/* complain_on_overflow */
514 bfd_elf_generic_reloc
, /* special_function */
515 "R_ARM_THM_JUMP24", /* name */
516 FALSE
, /* partial_inplace */
517 0x07ff2fff, /* src_mask */
518 0x07ff2fff, /* dst_mask */
519 TRUE
), /* pcrel_offset */
521 HOWTO (R_ARM_BASE_ABS
, /* type */
523 2, /* size (0 = byte, 1 = short, 2 = long) */
525 FALSE
, /* pc_relative */
527 complain_overflow_dont
,/* complain_on_overflow */
528 bfd_elf_generic_reloc
, /* special_function */
529 "R_ARM_BASE_ABS", /* name */
530 FALSE
, /* partial_inplace */
531 0xffffffff, /* src_mask */
532 0xffffffff, /* dst_mask */
533 FALSE
), /* pcrel_offset */
535 HOWTO (R_ARM_ALU_PCREL7_0
, /* type */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
539 TRUE
, /* pc_relative */
541 complain_overflow_dont
,/* complain_on_overflow */
542 bfd_elf_generic_reloc
, /* special_function */
543 "R_ARM_ALU_PCREL_7_0", /* name */
544 FALSE
, /* partial_inplace */
545 0x00000fff, /* src_mask */
546 0x00000fff, /* dst_mask */
547 TRUE
), /* pcrel_offset */
549 HOWTO (R_ARM_ALU_PCREL15_8
, /* type */
551 2, /* size (0 = byte, 1 = short, 2 = long) */
553 TRUE
, /* pc_relative */
555 complain_overflow_dont
,/* complain_on_overflow */
556 bfd_elf_generic_reloc
, /* special_function */
557 "R_ARM_ALU_PCREL_15_8",/* name */
558 FALSE
, /* partial_inplace */
559 0x00000fff, /* src_mask */
560 0x00000fff, /* dst_mask */
561 TRUE
), /* pcrel_offset */
563 HOWTO (R_ARM_ALU_PCREL23_15
, /* type */
565 2, /* size (0 = byte, 1 = short, 2 = long) */
567 TRUE
, /* pc_relative */
569 complain_overflow_dont
,/* complain_on_overflow */
570 bfd_elf_generic_reloc
, /* special_function */
571 "R_ARM_ALU_PCREL_23_15",/* name */
572 FALSE
, /* partial_inplace */
573 0x00000fff, /* src_mask */
574 0x00000fff, /* dst_mask */
575 TRUE
), /* pcrel_offset */
577 HOWTO (R_ARM_LDR_SBREL_11_0
, /* type */
579 2, /* size (0 = byte, 1 = short, 2 = long) */
581 FALSE
, /* pc_relative */
583 complain_overflow_dont
,/* complain_on_overflow */
584 bfd_elf_generic_reloc
, /* special_function */
585 "R_ARM_LDR_SBREL_11_0",/* name */
586 FALSE
, /* partial_inplace */
587 0x00000fff, /* src_mask */
588 0x00000fff, /* dst_mask */
589 FALSE
), /* pcrel_offset */
591 HOWTO (R_ARM_ALU_SBREL_19_12
, /* type */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
595 FALSE
, /* pc_relative */
597 complain_overflow_dont
,/* complain_on_overflow */
598 bfd_elf_generic_reloc
, /* special_function */
599 "R_ARM_ALU_SBREL_19_12",/* name */
600 FALSE
, /* partial_inplace */
601 0x000ff000, /* src_mask */
602 0x000ff000, /* dst_mask */
603 FALSE
), /* pcrel_offset */
605 HOWTO (R_ARM_ALU_SBREL_27_20
, /* type */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
609 FALSE
, /* pc_relative */
611 complain_overflow_dont
,/* complain_on_overflow */
612 bfd_elf_generic_reloc
, /* special_function */
613 "R_ARM_ALU_SBREL_27_20",/* name */
614 FALSE
, /* partial_inplace */
615 0x0ff00000, /* src_mask */
616 0x0ff00000, /* dst_mask */
617 FALSE
), /* pcrel_offset */
619 HOWTO (R_ARM_TARGET1
, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 FALSE
, /* pc_relative */
625 complain_overflow_dont
,/* complain_on_overflow */
626 bfd_elf_generic_reloc
, /* special_function */
627 "R_ARM_TARGET1", /* name */
628 FALSE
, /* partial_inplace */
629 0xffffffff, /* src_mask */
630 0xffffffff, /* dst_mask */
631 FALSE
), /* pcrel_offset */
633 HOWTO (R_ARM_ROSEGREL32
, /* type */
635 2, /* size (0 = byte, 1 = short, 2 = long) */
637 FALSE
, /* pc_relative */
639 complain_overflow_dont
,/* complain_on_overflow */
640 bfd_elf_generic_reloc
, /* special_function */
641 "R_ARM_ROSEGREL32", /* name */
642 FALSE
, /* partial_inplace */
643 0xffffffff, /* src_mask */
644 0xffffffff, /* dst_mask */
645 FALSE
), /* pcrel_offset */
647 HOWTO (R_ARM_V4BX
, /* type */
649 2, /* size (0 = byte, 1 = short, 2 = long) */
651 FALSE
, /* pc_relative */
653 complain_overflow_dont
,/* complain_on_overflow */
654 bfd_elf_generic_reloc
, /* special_function */
655 "R_ARM_V4BX", /* name */
656 FALSE
, /* partial_inplace */
657 0xffffffff, /* src_mask */
658 0xffffffff, /* dst_mask */
659 FALSE
), /* pcrel_offset */
661 HOWTO (R_ARM_TARGET2
, /* type */
663 2, /* size (0 = byte, 1 = short, 2 = long) */
665 FALSE
, /* pc_relative */
667 complain_overflow_signed
,/* complain_on_overflow */
668 bfd_elf_generic_reloc
, /* special_function */
669 "R_ARM_TARGET2", /* name */
670 FALSE
, /* partial_inplace */
671 0xffffffff, /* src_mask */
672 0xffffffff, /* dst_mask */
673 TRUE
), /* pcrel_offset */
675 HOWTO (R_ARM_PREL31
, /* type */
677 2, /* size (0 = byte, 1 = short, 2 = long) */
679 TRUE
, /* pc_relative */
681 complain_overflow_signed
,/* complain_on_overflow */
682 bfd_elf_generic_reloc
, /* special_function */
683 "R_ARM_PREL31", /* name */
684 FALSE
, /* partial_inplace */
685 0x7fffffff, /* src_mask */
686 0x7fffffff, /* dst_mask */
687 TRUE
), /* pcrel_offset */
689 HOWTO (R_ARM_MOVW_ABS_NC
, /* type */
691 2, /* size (0 = byte, 1 = short, 2 = long) */
693 FALSE
, /* pc_relative */
695 complain_overflow_dont
,/* complain_on_overflow */
696 bfd_elf_generic_reloc
, /* special_function */
697 "R_ARM_MOVW_ABS_NC", /* name */
698 FALSE
, /* partial_inplace */
699 0x000f0fff, /* src_mask */
700 0x000f0fff, /* dst_mask */
701 FALSE
), /* pcrel_offset */
703 HOWTO (R_ARM_MOVT_ABS
, /* type */
705 2, /* size (0 = byte, 1 = short, 2 = long) */
707 FALSE
, /* pc_relative */
709 complain_overflow_bitfield
,/* complain_on_overflow */
710 bfd_elf_generic_reloc
, /* special_function */
711 "R_ARM_MOVT_ABS", /* name */
712 FALSE
, /* partial_inplace */
713 0x000f0fff, /* src_mask */
714 0x000f0fff, /* dst_mask */
715 FALSE
), /* pcrel_offset */
717 HOWTO (R_ARM_MOVW_PREL_NC
, /* type */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
721 TRUE
, /* pc_relative */
723 complain_overflow_dont
,/* complain_on_overflow */
724 bfd_elf_generic_reloc
, /* special_function */
725 "R_ARM_MOVW_PREL_NC", /* name */
726 FALSE
, /* partial_inplace */
727 0x000f0fff, /* src_mask */
728 0x000f0fff, /* dst_mask */
729 TRUE
), /* pcrel_offset */
731 HOWTO (R_ARM_MOVT_PREL
, /* type */
733 2, /* size (0 = byte, 1 = short, 2 = long) */
735 TRUE
, /* pc_relative */
737 complain_overflow_bitfield
,/* complain_on_overflow */
738 bfd_elf_generic_reloc
, /* special_function */
739 "R_ARM_MOVT_PREL", /* name */
740 FALSE
, /* partial_inplace */
741 0x000f0fff, /* src_mask */
742 0x000f0fff, /* dst_mask */
743 TRUE
), /* pcrel_offset */
745 HOWTO (R_ARM_THM_MOVW_ABS_NC
, /* type */
747 2, /* size (0 = byte, 1 = short, 2 = long) */
749 FALSE
, /* pc_relative */
751 complain_overflow_dont
,/* complain_on_overflow */
752 bfd_elf_generic_reloc
, /* special_function */
753 "R_ARM_THM_MOVW_ABS_NC",/* name */
754 FALSE
, /* partial_inplace */
755 0x040f70ff, /* src_mask */
756 0x040f70ff, /* dst_mask */
757 FALSE
), /* pcrel_offset */
759 HOWTO (R_ARM_THM_MOVT_ABS
, /* type */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
763 FALSE
, /* pc_relative */
765 complain_overflow_bitfield
,/* complain_on_overflow */
766 bfd_elf_generic_reloc
, /* special_function */
767 "R_ARM_THM_MOVT_ABS", /* name */
768 FALSE
, /* partial_inplace */
769 0x040f70ff, /* src_mask */
770 0x040f70ff, /* dst_mask */
771 FALSE
), /* pcrel_offset */
773 HOWTO (R_ARM_THM_MOVW_PREL_NC
,/* type */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
777 TRUE
, /* pc_relative */
779 complain_overflow_dont
,/* complain_on_overflow */
780 bfd_elf_generic_reloc
, /* special_function */
781 "R_ARM_THM_MOVW_PREL_NC",/* name */
782 FALSE
, /* partial_inplace */
783 0x040f70ff, /* src_mask */
784 0x040f70ff, /* dst_mask */
785 TRUE
), /* pcrel_offset */
787 HOWTO (R_ARM_THM_MOVT_PREL
, /* type */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
791 TRUE
, /* pc_relative */
793 complain_overflow_bitfield
,/* complain_on_overflow */
794 bfd_elf_generic_reloc
, /* special_function */
795 "R_ARM_THM_MOVT_PREL", /* name */
796 FALSE
, /* partial_inplace */
797 0x040f70ff, /* src_mask */
798 0x040f70ff, /* dst_mask */
799 TRUE
), /* pcrel_offset */
801 HOWTO (R_ARM_THM_JUMP19
, /* type */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
805 TRUE
, /* pc_relative */
807 complain_overflow_signed
,/* complain_on_overflow */
808 bfd_elf_generic_reloc
, /* special_function */
809 "R_ARM_THM_JUMP19", /* name */
810 FALSE
, /* partial_inplace */
811 0x043f2fff, /* src_mask */
812 0x043f2fff, /* dst_mask */
813 TRUE
), /* pcrel_offset */
815 HOWTO (R_ARM_THM_JUMP6
, /* type */
817 1, /* size (0 = byte, 1 = short, 2 = long) */
819 TRUE
, /* pc_relative */
821 complain_overflow_unsigned
,/* complain_on_overflow */
822 bfd_elf_generic_reloc
, /* special_function */
823 "R_ARM_THM_JUMP6", /* name */
824 FALSE
, /* partial_inplace */
825 0x02f8, /* src_mask */
826 0x02f8, /* dst_mask */
827 TRUE
), /* pcrel_offset */
829 /* These are declared as 13-bit signed relocations because we can
830 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
832 HOWTO (R_ARM_THM_ALU_PREL_11_0
,/* type */
834 2, /* size (0 = byte, 1 = short, 2 = long) */
836 TRUE
, /* pc_relative */
838 complain_overflow_dont
,/* complain_on_overflow */
839 bfd_elf_generic_reloc
, /* special_function */
840 "R_ARM_THM_ALU_PREL_11_0",/* name */
841 FALSE
, /* partial_inplace */
842 0xffffffff, /* src_mask */
843 0xffffffff, /* dst_mask */
844 TRUE
), /* pcrel_offset */
846 HOWTO (R_ARM_THM_PC12
, /* type */
848 2, /* size (0 = byte, 1 = short, 2 = long) */
850 TRUE
, /* pc_relative */
852 complain_overflow_dont
,/* complain_on_overflow */
853 bfd_elf_generic_reloc
, /* special_function */
854 "R_ARM_THM_PC12", /* name */
855 FALSE
, /* partial_inplace */
856 0xffffffff, /* src_mask */
857 0xffffffff, /* dst_mask */
858 TRUE
), /* pcrel_offset */
860 HOWTO (R_ARM_ABS32_NOI
, /* type */
862 2, /* size (0 = byte, 1 = short, 2 = long) */
864 FALSE
, /* pc_relative */
866 complain_overflow_dont
,/* complain_on_overflow */
867 bfd_elf_generic_reloc
, /* special_function */
868 "R_ARM_ABS32_NOI", /* name */
869 FALSE
, /* partial_inplace */
870 0xffffffff, /* src_mask */
871 0xffffffff, /* dst_mask */
872 FALSE
), /* pcrel_offset */
874 HOWTO (R_ARM_REL32_NOI
, /* type */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
878 TRUE
, /* pc_relative */
880 complain_overflow_dont
,/* complain_on_overflow */
881 bfd_elf_generic_reloc
, /* special_function */
882 "R_ARM_REL32_NOI", /* name */
883 FALSE
, /* partial_inplace */
884 0xffffffff, /* src_mask */
885 0xffffffff, /* dst_mask */
886 FALSE
), /* pcrel_offset */
888 /* Group relocations. */
890 HOWTO (R_ARM_ALU_PC_G0_NC
, /* type */
892 2, /* size (0 = byte, 1 = short, 2 = long) */
894 TRUE
, /* pc_relative */
896 complain_overflow_dont
,/* complain_on_overflow */
897 bfd_elf_generic_reloc
, /* special_function */
898 "R_ARM_ALU_PC_G0_NC", /* name */
899 FALSE
, /* partial_inplace */
900 0xffffffff, /* src_mask */
901 0xffffffff, /* dst_mask */
902 TRUE
), /* pcrel_offset */
904 HOWTO (R_ARM_ALU_PC_G0
, /* type */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
908 TRUE
, /* pc_relative */
910 complain_overflow_dont
,/* complain_on_overflow */
911 bfd_elf_generic_reloc
, /* special_function */
912 "R_ARM_ALU_PC_G0", /* name */
913 FALSE
, /* partial_inplace */
914 0xffffffff, /* src_mask */
915 0xffffffff, /* dst_mask */
916 TRUE
), /* pcrel_offset */
918 HOWTO (R_ARM_ALU_PC_G1_NC
, /* type */
920 2, /* size (0 = byte, 1 = short, 2 = long) */
922 TRUE
, /* pc_relative */
924 complain_overflow_dont
,/* complain_on_overflow */
925 bfd_elf_generic_reloc
, /* special_function */
926 "R_ARM_ALU_PC_G1_NC", /* name */
927 FALSE
, /* partial_inplace */
928 0xffffffff, /* src_mask */
929 0xffffffff, /* dst_mask */
930 TRUE
), /* pcrel_offset */
932 HOWTO (R_ARM_ALU_PC_G1
, /* type */
934 2, /* size (0 = byte, 1 = short, 2 = long) */
936 TRUE
, /* pc_relative */
938 complain_overflow_dont
,/* complain_on_overflow */
939 bfd_elf_generic_reloc
, /* special_function */
940 "R_ARM_ALU_PC_G1", /* name */
941 FALSE
, /* partial_inplace */
942 0xffffffff, /* src_mask */
943 0xffffffff, /* dst_mask */
944 TRUE
), /* pcrel_offset */
946 HOWTO (R_ARM_ALU_PC_G2
, /* type */
948 2, /* size (0 = byte, 1 = short, 2 = long) */
950 TRUE
, /* pc_relative */
952 complain_overflow_dont
,/* complain_on_overflow */
953 bfd_elf_generic_reloc
, /* special_function */
954 "R_ARM_ALU_PC_G2", /* name */
955 FALSE
, /* partial_inplace */
956 0xffffffff, /* src_mask */
957 0xffffffff, /* dst_mask */
958 TRUE
), /* pcrel_offset */
960 HOWTO (R_ARM_LDR_PC_G1
, /* type */
962 2, /* size (0 = byte, 1 = short, 2 = long) */
964 TRUE
, /* pc_relative */
966 complain_overflow_dont
,/* complain_on_overflow */
967 bfd_elf_generic_reloc
, /* special_function */
968 "R_ARM_LDR_PC_G1", /* name */
969 FALSE
, /* partial_inplace */
970 0xffffffff, /* src_mask */
971 0xffffffff, /* dst_mask */
972 TRUE
), /* pcrel_offset */
974 HOWTO (R_ARM_LDR_PC_G2
, /* type */
976 2, /* size (0 = byte, 1 = short, 2 = long) */
978 TRUE
, /* pc_relative */
980 complain_overflow_dont
,/* complain_on_overflow */
981 bfd_elf_generic_reloc
, /* special_function */
982 "R_ARM_LDR_PC_G2", /* name */
983 FALSE
, /* partial_inplace */
984 0xffffffff, /* src_mask */
985 0xffffffff, /* dst_mask */
986 TRUE
), /* pcrel_offset */
988 HOWTO (R_ARM_LDRS_PC_G0
, /* type */
990 2, /* size (0 = byte, 1 = short, 2 = long) */
992 TRUE
, /* pc_relative */
994 complain_overflow_dont
,/* complain_on_overflow */
995 bfd_elf_generic_reloc
, /* special_function */
996 "R_ARM_LDRS_PC_G0", /* name */
997 FALSE
, /* partial_inplace */
998 0xffffffff, /* src_mask */
999 0xffffffff, /* dst_mask */
1000 TRUE
), /* pcrel_offset */
1002 HOWTO (R_ARM_LDRS_PC_G1
, /* type */
1004 2, /* size (0 = byte, 1 = short, 2 = long) */
1006 TRUE
, /* pc_relative */
1008 complain_overflow_dont
,/* complain_on_overflow */
1009 bfd_elf_generic_reloc
, /* special_function */
1010 "R_ARM_LDRS_PC_G1", /* name */
1011 FALSE
, /* partial_inplace */
1012 0xffffffff, /* src_mask */
1013 0xffffffff, /* dst_mask */
1014 TRUE
), /* pcrel_offset */
1016 HOWTO (R_ARM_LDRS_PC_G2
, /* type */
1018 2, /* size (0 = byte, 1 = short, 2 = long) */
1020 TRUE
, /* pc_relative */
1022 complain_overflow_dont
,/* complain_on_overflow */
1023 bfd_elf_generic_reloc
, /* special_function */
1024 "R_ARM_LDRS_PC_G2", /* name */
1025 FALSE
, /* partial_inplace */
1026 0xffffffff, /* src_mask */
1027 0xffffffff, /* dst_mask */
1028 TRUE
), /* pcrel_offset */
1030 HOWTO (R_ARM_LDC_PC_G0
, /* type */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 TRUE
, /* pc_relative */
1036 complain_overflow_dont
,/* complain_on_overflow */
1037 bfd_elf_generic_reloc
, /* special_function */
1038 "R_ARM_LDC_PC_G0", /* name */
1039 FALSE
, /* partial_inplace */
1040 0xffffffff, /* src_mask */
1041 0xffffffff, /* dst_mask */
1042 TRUE
), /* pcrel_offset */
1044 HOWTO (R_ARM_LDC_PC_G1
, /* type */
1046 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 TRUE
, /* pc_relative */
1050 complain_overflow_dont
,/* complain_on_overflow */
1051 bfd_elf_generic_reloc
, /* special_function */
1052 "R_ARM_LDC_PC_G1", /* name */
1053 FALSE
, /* partial_inplace */
1054 0xffffffff, /* src_mask */
1055 0xffffffff, /* dst_mask */
1056 TRUE
), /* pcrel_offset */
1058 HOWTO (R_ARM_LDC_PC_G2
, /* type */
1060 2, /* size (0 = byte, 1 = short, 2 = long) */
1062 TRUE
, /* pc_relative */
1064 complain_overflow_dont
,/* complain_on_overflow */
1065 bfd_elf_generic_reloc
, /* special_function */
1066 "R_ARM_LDC_PC_G2", /* name */
1067 FALSE
, /* partial_inplace */
1068 0xffffffff, /* src_mask */
1069 0xffffffff, /* dst_mask */
1070 TRUE
), /* pcrel_offset */
1072 HOWTO (R_ARM_ALU_SB_G0_NC
, /* type */
1074 2, /* size (0 = byte, 1 = short, 2 = long) */
1076 TRUE
, /* pc_relative */
1078 complain_overflow_dont
,/* complain_on_overflow */
1079 bfd_elf_generic_reloc
, /* special_function */
1080 "R_ARM_ALU_SB_G0_NC", /* name */
1081 FALSE
, /* partial_inplace */
1082 0xffffffff, /* src_mask */
1083 0xffffffff, /* dst_mask */
1084 TRUE
), /* pcrel_offset */
1086 HOWTO (R_ARM_ALU_SB_G0
, /* type */
1088 2, /* size (0 = byte, 1 = short, 2 = long) */
1090 TRUE
, /* pc_relative */
1092 complain_overflow_dont
,/* complain_on_overflow */
1093 bfd_elf_generic_reloc
, /* special_function */
1094 "R_ARM_ALU_SB_G0", /* name */
1095 FALSE
, /* partial_inplace */
1096 0xffffffff, /* src_mask */
1097 0xffffffff, /* dst_mask */
1098 TRUE
), /* pcrel_offset */
1100 HOWTO (R_ARM_ALU_SB_G1_NC
, /* type */
1102 2, /* size (0 = byte, 1 = short, 2 = long) */
1104 TRUE
, /* pc_relative */
1106 complain_overflow_dont
,/* complain_on_overflow */
1107 bfd_elf_generic_reloc
, /* special_function */
1108 "R_ARM_ALU_SB_G1_NC", /* name */
1109 FALSE
, /* partial_inplace */
1110 0xffffffff, /* src_mask */
1111 0xffffffff, /* dst_mask */
1112 TRUE
), /* pcrel_offset */
1114 HOWTO (R_ARM_ALU_SB_G1
, /* type */
1116 2, /* size (0 = byte, 1 = short, 2 = long) */
1118 TRUE
, /* pc_relative */
1120 complain_overflow_dont
,/* complain_on_overflow */
1121 bfd_elf_generic_reloc
, /* special_function */
1122 "R_ARM_ALU_SB_G1", /* name */
1123 FALSE
, /* partial_inplace */
1124 0xffffffff, /* src_mask */
1125 0xffffffff, /* dst_mask */
1126 TRUE
), /* pcrel_offset */
1128 HOWTO (R_ARM_ALU_SB_G2
, /* type */
1130 2, /* size (0 = byte, 1 = short, 2 = long) */
1132 TRUE
, /* pc_relative */
1134 complain_overflow_dont
,/* complain_on_overflow */
1135 bfd_elf_generic_reloc
, /* special_function */
1136 "R_ARM_ALU_SB_G2", /* name */
1137 FALSE
, /* partial_inplace */
1138 0xffffffff, /* src_mask */
1139 0xffffffff, /* dst_mask */
1140 TRUE
), /* pcrel_offset */
1142 HOWTO (R_ARM_LDR_SB_G0
, /* type */
1144 2, /* size (0 = byte, 1 = short, 2 = long) */
1146 TRUE
, /* pc_relative */
1148 complain_overflow_dont
,/* complain_on_overflow */
1149 bfd_elf_generic_reloc
, /* special_function */
1150 "R_ARM_LDR_SB_G0", /* name */
1151 FALSE
, /* partial_inplace */
1152 0xffffffff, /* src_mask */
1153 0xffffffff, /* dst_mask */
1154 TRUE
), /* pcrel_offset */
1156 HOWTO (R_ARM_LDR_SB_G1
, /* type */
1158 2, /* size (0 = byte, 1 = short, 2 = long) */
1160 TRUE
, /* pc_relative */
1162 complain_overflow_dont
,/* complain_on_overflow */
1163 bfd_elf_generic_reloc
, /* special_function */
1164 "R_ARM_LDR_SB_G1", /* name */
1165 FALSE
, /* partial_inplace */
1166 0xffffffff, /* src_mask */
1167 0xffffffff, /* dst_mask */
1168 TRUE
), /* pcrel_offset */
1170 HOWTO (R_ARM_LDR_SB_G2
, /* type */
1172 2, /* size (0 = byte, 1 = short, 2 = long) */
1174 TRUE
, /* pc_relative */
1176 complain_overflow_dont
,/* complain_on_overflow */
1177 bfd_elf_generic_reloc
, /* special_function */
1178 "R_ARM_LDR_SB_G2", /* name */
1179 FALSE
, /* partial_inplace */
1180 0xffffffff, /* src_mask */
1181 0xffffffff, /* dst_mask */
1182 TRUE
), /* pcrel_offset */
1184 HOWTO (R_ARM_LDRS_SB_G0
, /* type */
1186 2, /* size (0 = byte, 1 = short, 2 = long) */
1188 TRUE
, /* pc_relative */
1190 complain_overflow_dont
,/* complain_on_overflow */
1191 bfd_elf_generic_reloc
, /* special_function */
1192 "R_ARM_LDRS_SB_G0", /* name */
1193 FALSE
, /* partial_inplace */
1194 0xffffffff, /* src_mask */
1195 0xffffffff, /* dst_mask */
1196 TRUE
), /* pcrel_offset */
1198 HOWTO (R_ARM_LDRS_SB_G1
, /* type */
1200 2, /* size (0 = byte, 1 = short, 2 = long) */
1202 TRUE
, /* pc_relative */
1204 complain_overflow_dont
,/* complain_on_overflow */
1205 bfd_elf_generic_reloc
, /* special_function */
1206 "R_ARM_LDRS_SB_G1", /* name */
1207 FALSE
, /* partial_inplace */
1208 0xffffffff, /* src_mask */
1209 0xffffffff, /* dst_mask */
1210 TRUE
), /* pcrel_offset */
1212 HOWTO (R_ARM_LDRS_SB_G2
, /* type */
1214 2, /* size (0 = byte, 1 = short, 2 = long) */
1216 TRUE
, /* pc_relative */
1218 complain_overflow_dont
,/* complain_on_overflow */
1219 bfd_elf_generic_reloc
, /* special_function */
1220 "R_ARM_LDRS_SB_G2", /* name */
1221 FALSE
, /* partial_inplace */
1222 0xffffffff, /* src_mask */
1223 0xffffffff, /* dst_mask */
1224 TRUE
), /* pcrel_offset */
1226 HOWTO (R_ARM_LDC_SB_G0
, /* type */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 TRUE
, /* pc_relative */
1232 complain_overflow_dont
,/* complain_on_overflow */
1233 bfd_elf_generic_reloc
, /* special_function */
1234 "R_ARM_LDC_SB_G0", /* name */
1235 FALSE
, /* partial_inplace */
1236 0xffffffff, /* src_mask */
1237 0xffffffff, /* dst_mask */
1238 TRUE
), /* pcrel_offset */
1240 HOWTO (R_ARM_LDC_SB_G1
, /* type */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 TRUE
, /* pc_relative */
1246 complain_overflow_dont
,/* complain_on_overflow */
1247 bfd_elf_generic_reloc
, /* special_function */
1248 "R_ARM_LDC_SB_G1", /* name */
1249 FALSE
, /* partial_inplace */
1250 0xffffffff, /* src_mask */
1251 0xffffffff, /* dst_mask */
1252 TRUE
), /* pcrel_offset */
1254 HOWTO (R_ARM_LDC_SB_G2
, /* type */
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1258 TRUE
, /* pc_relative */
1260 complain_overflow_dont
,/* complain_on_overflow */
1261 bfd_elf_generic_reloc
, /* special_function */
1262 "R_ARM_LDC_SB_G2", /* name */
1263 FALSE
, /* partial_inplace */
1264 0xffffffff, /* src_mask */
1265 0xffffffff, /* dst_mask */
1266 TRUE
), /* pcrel_offset */
1268 /* End of group relocations. */
1270 HOWTO (R_ARM_MOVW_BREL_NC
, /* type */
1272 2, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE
, /* pc_relative */
1276 complain_overflow_dont
,/* complain_on_overflow */
1277 bfd_elf_generic_reloc
, /* special_function */
1278 "R_ARM_MOVW_BREL_NC", /* name */
1279 FALSE
, /* partial_inplace */
1280 0x0000ffff, /* src_mask */
1281 0x0000ffff, /* dst_mask */
1282 FALSE
), /* pcrel_offset */
1284 HOWTO (R_ARM_MOVT_BREL
, /* type */
1286 2, /* size (0 = byte, 1 = short, 2 = long) */
1288 FALSE
, /* pc_relative */
1290 complain_overflow_bitfield
,/* complain_on_overflow */
1291 bfd_elf_generic_reloc
, /* special_function */
1292 "R_ARM_MOVT_BREL", /* name */
1293 FALSE
, /* partial_inplace */
1294 0x0000ffff, /* src_mask */
1295 0x0000ffff, /* dst_mask */
1296 FALSE
), /* pcrel_offset */
1298 HOWTO (R_ARM_MOVW_BREL
, /* type */
1300 2, /* size (0 = byte, 1 = short, 2 = long) */
1302 FALSE
, /* pc_relative */
1304 complain_overflow_dont
,/* complain_on_overflow */
1305 bfd_elf_generic_reloc
, /* special_function */
1306 "R_ARM_MOVW_BREL", /* name */
1307 FALSE
, /* partial_inplace */
1308 0x0000ffff, /* src_mask */
1309 0x0000ffff, /* dst_mask */
1310 FALSE
), /* pcrel_offset */
1312 HOWTO (R_ARM_THM_MOVW_BREL_NC
,/* type */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 FALSE
, /* pc_relative */
1318 complain_overflow_dont
,/* complain_on_overflow */
1319 bfd_elf_generic_reloc
, /* special_function */
1320 "R_ARM_THM_MOVW_BREL_NC",/* name */
1321 FALSE
, /* partial_inplace */
1322 0x040f70ff, /* src_mask */
1323 0x040f70ff, /* dst_mask */
1324 FALSE
), /* pcrel_offset */
1326 HOWTO (R_ARM_THM_MOVT_BREL
, /* type */
1328 2, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE
, /* pc_relative */
1332 complain_overflow_bitfield
,/* complain_on_overflow */
1333 bfd_elf_generic_reloc
, /* special_function */
1334 "R_ARM_THM_MOVT_BREL", /* name */
1335 FALSE
, /* partial_inplace */
1336 0x040f70ff, /* src_mask */
1337 0x040f70ff, /* dst_mask */
1338 FALSE
), /* pcrel_offset */
1340 HOWTO (R_ARM_THM_MOVW_BREL
, /* type */
1342 2, /* size (0 = byte, 1 = short, 2 = long) */
1344 FALSE
, /* pc_relative */
1346 complain_overflow_dont
,/* complain_on_overflow */
1347 bfd_elf_generic_reloc
, /* special_function */
1348 "R_ARM_THM_MOVW_BREL", /* name */
1349 FALSE
, /* partial_inplace */
1350 0x040f70ff, /* src_mask */
1351 0x040f70ff, /* dst_mask */
1352 FALSE
), /* pcrel_offset */
1354 EMPTY_HOWTO (90), /* unallocated */
1359 HOWTO (R_ARM_PLT32_ABS
, /* type */
1361 2, /* size (0 = byte, 1 = short, 2 = long) */
1363 FALSE
, /* pc_relative */
1365 complain_overflow_dont
,/* complain_on_overflow */
1366 bfd_elf_generic_reloc
, /* special_function */
1367 "R_ARM_PLT32_ABS", /* name */
1368 FALSE
, /* partial_inplace */
1369 0xffffffff, /* src_mask */
1370 0xffffffff, /* dst_mask */
1371 FALSE
), /* pcrel_offset */
1373 HOWTO (R_ARM_GOT_ABS
, /* type */
1375 2, /* size (0 = byte, 1 = short, 2 = long) */
1377 FALSE
, /* pc_relative */
1379 complain_overflow_dont
,/* complain_on_overflow */
1380 bfd_elf_generic_reloc
, /* special_function */
1381 "R_ARM_GOT_ABS", /* name */
1382 FALSE
, /* partial_inplace */
1383 0xffffffff, /* src_mask */
1384 0xffffffff, /* dst_mask */
1385 FALSE
), /* pcrel_offset */
1387 HOWTO (R_ARM_GOT_PREL
, /* type */
1389 2, /* size (0 = byte, 1 = short, 2 = long) */
1391 TRUE
, /* pc_relative */
1393 complain_overflow_dont
, /* complain_on_overflow */
1394 bfd_elf_generic_reloc
, /* special_function */
1395 "R_ARM_GOT_PREL", /* name */
1396 FALSE
, /* partial_inplace */
1397 0xffffffff, /* src_mask */
1398 0xffffffff, /* dst_mask */
1399 TRUE
), /* pcrel_offset */
1401 HOWTO (R_ARM_GOT_BREL12
, /* type */
1403 2, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE
, /* pc_relative */
1407 complain_overflow_bitfield
,/* complain_on_overflow */
1408 bfd_elf_generic_reloc
, /* special_function */
1409 "R_ARM_GOT_BREL12", /* name */
1410 FALSE
, /* partial_inplace */
1411 0x00000fff, /* src_mask */
1412 0x00000fff, /* dst_mask */
1413 FALSE
), /* pcrel_offset */
1415 HOWTO (R_ARM_GOTOFF12
, /* type */
1417 2, /* size (0 = byte, 1 = short, 2 = long) */
1419 FALSE
, /* pc_relative */
1421 complain_overflow_bitfield
,/* complain_on_overflow */
1422 bfd_elf_generic_reloc
, /* special_function */
1423 "R_ARM_GOTOFF12", /* name */
1424 FALSE
, /* partial_inplace */
1425 0x00000fff, /* src_mask */
1426 0x00000fff, /* dst_mask */
1427 FALSE
), /* pcrel_offset */
1429 EMPTY_HOWTO (R_ARM_GOTRELAX
), /* reserved for future GOT-load optimizations */
1431 /* GNU extension to record C++ vtable member usage */
1432 HOWTO (R_ARM_GNU_VTENTRY
, /* type */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 FALSE
, /* pc_relative */
1438 complain_overflow_dont
, /* complain_on_overflow */
1439 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
1440 "R_ARM_GNU_VTENTRY", /* name */
1441 FALSE
, /* partial_inplace */
1444 FALSE
), /* pcrel_offset */
1446 /* GNU extension to record C++ vtable hierarchy */
1447 HOWTO (R_ARM_GNU_VTINHERIT
, /* type */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE
, /* pc_relative */
1453 complain_overflow_dont
, /* complain_on_overflow */
1454 NULL
, /* special_function */
1455 "R_ARM_GNU_VTINHERIT", /* name */
1456 FALSE
, /* partial_inplace */
1459 FALSE
), /* pcrel_offset */
1461 HOWTO (R_ARM_THM_JUMP11
, /* type */
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 TRUE
, /* pc_relative */
1467 complain_overflow_signed
, /* complain_on_overflow */
1468 bfd_elf_generic_reloc
, /* special_function */
1469 "R_ARM_THM_JUMP11", /* name */
1470 FALSE
, /* partial_inplace */
1471 0x000007ff, /* src_mask */
1472 0x000007ff, /* dst_mask */
1473 TRUE
), /* pcrel_offset */
1475 HOWTO (R_ARM_THM_JUMP8
, /* type */
1477 1, /* size (0 = byte, 1 = short, 2 = long) */
1479 TRUE
, /* pc_relative */
1481 complain_overflow_signed
, /* complain_on_overflow */
1482 bfd_elf_generic_reloc
, /* special_function */
1483 "R_ARM_THM_JUMP8", /* name */
1484 FALSE
, /* partial_inplace */
1485 0x000000ff, /* src_mask */
1486 0x000000ff, /* dst_mask */
1487 TRUE
), /* pcrel_offset */
1489 /* TLS relocations */
1490 HOWTO (R_ARM_TLS_GD32
, /* type */
1492 2, /* size (0 = byte, 1 = short, 2 = long) */
1494 FALSE
, /* pc_relative */
1496 complain_overflow_bitfield
,/* complain_on_overflow */
1497 NULL
, /* special_function */
1498 "R_ARM_TLS_GD32", /* name */
1499 TRUE
, /* partial_inplace */
1500 0xffffffff, /* src_mask */
1501 0xffffffff, /* dst_mask */
1502 FALSE
), /* pcrel_offset */
1504 HOWTO (R_ARM_TLS_LDM32
, /* type */
1506 2, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE
, /* pc_relative */
1510 complain_overflow_bitfield
,/* complain_on_overflow */
1511 bfd_elf_generic_reloc
, /* special_function */
1512 "R_ARM_TLS_LDM32", /* name */
1513 TRUE
, /* partial_inplace */
1514 0xffffffff, /* src_mask */
1515 0xffffffff, /* dst_mask */
1516 FALSE
), /* pcrel_offset */
1518 HOWTO (R_ARM_TLS_LDO32
, /* type */
1520 2, /* size (0 = byte, 1 = short, 2 = long) */
1522 FALSE
, /* pc_relative */
1524 complain_overflow_bitfield
,/* complain_on_overflow */
1525 bfd_elf_generic_reloc
, /* special_function */
1526 "R_ARM_TLS_LDO32", /* name */
1527 TRUE
, /* partial_inplace */
1528 0xffffffff, /* src_mask */
1529 0xffffffff, /* dst_mask */
1530 FALSE
), /* pcrel_offset */
1532 HOWTO (R_ARM_TLS_IE32
, /* type */
1534 2, /* size (0 = byte, 1 = short, 2 = long) */
1536 FALSE
, /* pc_relative */
1538 complain_overflow_bitfield
,/* complain_on_overflow */
1539 NULL
, /* special_function */
1540 "R_ARM_TLS_IE32", /* name */
1541 TRUE
, /* partial_inplace */
1542 0xffffffff, /* src_mask */
1543 0xffffffff, /* dst_mask */
1544 FALSE
), /* pcrel_offset */
1546 HOWTO (R_ARM_TLS_LE32
, /* type */
1548 2, /* size (0 = byte, 1 = short, 2 = long) */
1550 FALSE
, /* pc_relative */
1552 complain_overflow_bitfield
,/* complain_on_overflow */
1553 bfd_elf_generic_reloc
, /* special_function */
1554 "R_ARM_TLS_LE32", /* name */
1555 TRUE
, /* partial_inplace */
1556 0xffffffff, /* src_mask */
1557 0xffffffff, /* dst_mask */
1558 FALSE
), /* pcrel_offset */
1560 HOWTO (R_ARM_TLS_LDO12
, /* type */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE
, /* pc_relative */
1566 complain_overflow_bitfield
,/* complain_on_overflow */
1567 bfd_elf_generic_reloc
, /* special_function */
1568 "R_ARM_TLS_LDO12", /* name */
1569 FALSE
, /* partial_inplace */
1570 0x00000fff, /* src_mask */
1571 0x00000fff, /* dst_mask */
1572 FALSE
), /* pcrel_offset */
1574 HOWTO (R_ARM_TLS_LE12
, /* type */
1576 2, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE
, /* pc_relative */
1580 complain_overflow_bitfield
,/* complain_on_overflow */
1581 bfd_elf_generic_reloc
, /* special_function */
1582 "R_ARM_TLS_LE12", /* name */
1583 FALSE
, /* partial_inplace */
1584 0x00000fff, /* src_mask */
1585 0x00000fff, /* dst_mask */
1586 FALSE
), /* pcrel_offset */
1588 HOWTO (R_ARM_TLS_IE12GP
, /* type */
1590 2, /* size (0 = byte, 1 = short, 2 = long) */
1592 FALSE
, /* pc_relative */
1594 complain_overflow_bitfield
,/* complain_on_overflow */
1595 bfd_elf_generic_reloc
, /* special_function */
1596 "R_ARM_TLS_IE12GP", /* name */
1597 FALSE
, /* partial_inplace */
1598 0x00000fff, /* src_mask */
1599 0x00000fff, /* dst_mask */
1600 FALSE
), /* pcrel_offset */
1603 /* 112-127 private relocations
1604 128 R_ARM_ME_TOO, obsolete
1605 129-255 unallocated in AAELF.
1607 249-255 extended, currently unused, relocations: */
1609 static reloc_howto_type elf32_arm_howto_table_2
[4] =
1611 HOWTO (R_ARM_RREL32
, /* type */
1613 0, /* size (0 = byte, 1 = short, 2 = long) */
1615 FALSE
, /* pc_relative */
1617 complain_overflow_dont
,/* complain_on_overflow */
1618 bfd_elf_generic_reloc
, /* special_function */
1619 "R_ARM_RREL32", /* name */
1620 FALSE
, /* partial_inplace */
1623 FALSE
), /* pcrel_offset */
1625 HOWTO (R_ARM_RABS32
, /* type */
1627 0, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE
, /* pc_relative */
1631 complain_overflow_dont
,/* complain_on_overflow */
1632 bfd_elf_generic_reloc
, /* special_function */
1633 "R_ARM_RABS32", /* name */
1634 FALSE
, /* partial_inplace */
1637 FALSE
), /* pcrel_offset */
1639 HOWTO (R_ARM_RPC24
, /* type */
1641 0, /* size (0 = byte, 1 = short, 2 = long) */
1643 FALSE
, /* pc_relative */
1645 complain_overflow_dont
,/* complain_on_overflow */
1646 bfd_elf_generic_reloc
, /* special_function */
1647 "R_ARM_RPC24", /* name */
1648 FALSE
, /* partial_inplace */
1651 FALSE
), /* pcrel_offset */
1653 HOWTO (R_ARM_RBASE
, /* type */
1655 0, /* size (0 = byte, 1 = short, 2 = long) */
1657 FALSE
, /* pc_relative */
1659 complain_overflow_dont
,/* complain_on_overflow */
1660 bfd_elf_generic_reloc
, /* special_function */
1661 "R_ARM_RBASE", /* name */
1662 FALSE
, /* partial_inplace */
1665 FALSE
) /* pcrel_offset */
1668 static reloc_howto_type
*
1669 elf32_arm_howto_from_type (unsigned int r_type
)
1671 if (r_type
< NUM_ELEM (elf32_arm_howto_table_1
))
1672 return &elf32_arm_howto_table_1
[r_type
];
1674 if (r_type
>= R_ARM_RREL32
1675 && r_type
< R_ARM_RREL32
+ NUM_ELEM (elf32_arm_howto_table_2
))
1676 return &elf32_arm_howto_table_2
[r_type
- R_ARM_RREL32
];
1682 elf32_arm_info_to_howto (bfd
* abfd ATTRIBUTE_UNUSED
, arelent
* bfd_reloc
,
1683 Elf_Internal_Rela
* elf_reloc
)
1685 unsigned int r_type
;
1687 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1688 bfd_reloc
->howto
= elf32_arm_howto_from_type (r_type
);
1691 struct elf32_arm_reloc_map
1693 bfd_reloc_code_real_type bfd_reloc_val
;
1694 unsigned char elf_reloc_val
;
1697 /* All entries in this list must also be present in elf32_arm_howto_table. */
1698 static const struct elf32_arm_reloc_map elf32_arm_reloc_map
[] =
1700 {BFD_RELOC_NONE
, R_ARM_NONE
},
1701 {BFD_RELOC_ARM_PCREL_BRANCH
, R_ARM_PC24
},
1702 {BFD_RELOC_ARM_PCREL_CALL
, R_ARM_CALL
},
1703 {BFD_RELOC_ARM_PCREL_JUMP
, R_ARM_JUMP24
},
1704 {BFD_RELOC_ARM_PCREL_BLX
, R_ARM_XPC25
},
1705 {BFD_RELOC_THUMB_PCREL_BLX
, R_ARM_THM_XPC22
},
1706 {BFD_RELOC_32
, R_ARM_ABS32
},
1707 {BFD_RELOC_32_PCREL
, R_ARM_REL32
},
1708 {BFD_RELOC_8
, R_ARM_ABS8
},
1709 {BFD_RELOC_16
, R_ARM_ABS16
},
1710 {BFD_RELOC_ARM_OFFSET_IMM
, R_ARM_ABS12
},
1711 {BFD_RELOC_ARM_THUMB_OFFSET
, R_ARM_THM_ABS5
},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH25
, R_ARM_THM_JUMP24
},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH23
, R_ARM_THM_CALL
},
1714 {BFD_RELOC_THUMB_PCREL_BRANCH12
, R_ARM_THM_JUMP11
},
1715 {BFD_RELOC_THUMB_PCREL_BRANCH20
, R_ARM_THM_JUMP19
},
1716 {BFD_RELOC_THUMB_PCREL_BRANCH9
, R_ARM_THM_JUMP8
},
1717 {BFD_RELOC_THUMB_PCREL_BRANCH7
, R_ARM_THM_JUMP6
},
1718 {BFD_RELOC_ARM_GLOB_DAT
, R_ARM_GLOB_DAT
},
1719 {BFD_RELOC_ARM_JUMP_SLOT
, R_ARM_JUMP_SLOT
},
1720 {BFD_RELOC_ARM_RELATIVE
, R_ARM_RELATIVE
},
1721 {BFD_RELOC_ARM_GOTOFF
, R_ARM_GOTOFF32
},
1722 {BFD_RELOC_ARM_GOTPC
, R_ARM_GOTPC
},
1723 {BFD_RELOC_ARM_GOT32
, R_ARM_GOT32
},
1724 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1725 {BFD_RELOC_ARM_TARGET1
, R_ARM_TARGET1
},
1726 {BFD_RELOC_ARM_ROSEGREL32
, R_ARM_ROSEGREL32
},
1727 {BFD_RELOC_ARM_SBREL32
, R_ARM_SBREL32
},
1728 {BFD_RELOC_ARM_PREL31
, R_ARM_PREL31
},
1729 {BFD_RELOC_ARM_TARGET2
, R_ARM_TARGET2
},
1730 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1731 {BFD_RELOC_ARM_TLS_GD32
, R_ARM_TLS_GD32
},
1732 {BFD_RELOC_ARM_TLS_LDO32
, R_ARM_TLS_LDO32
},
1733 {BFD_RELOC_ARM_TLS_LDM32
, R_ARM_TLS_LDM32
},
1734 {BFD_RELOC_ARM_TLS_DTPMOD32
, R_ARM_TLS_DTPMOD32
},
1735 {BFD_RELOC_ARM_TLS_DTPOFF32
, R_ARM_TLS_DTPOFF32
},
1736 {BFD_RELOC_ARM_TLS_TPOFF32
, R_ARM_TLS_TPOFF32
},
1737 {BFD_RELOC_ARM_TLS_IE32
, R_ARM_TLS_IE32
},
1738 {BFD_RELOC_ARM_TLS_LE32
, R_ARM_TLS_LE32
},
1739 {BFD_RELOC_VTABLE_INHERIT
, R_ARM_GNU_VTINHERIT
},
1740 {BFD_RELOC_VTABLE_ENTRY
, R_ARM_GNU_VTENTRY
},
1741 {BFD_RELOC_ARM_MOVW
, R_ARM_MOVW_ABS_NC
},
1742 {BFD_RELOC_ARM_MOVT
, R_ARM_MOVT_ABS
},
1743 {BFD_RELOC_ARM_MOVW_PCREL
, R_ARM_MOVW_PREL_NC
},
1744 {BFD_RELOC_ARM_MOVT_PCREL
, R_ARM_MOVT_PREL
},
1745 {BFD_RELOC_ARM_THUMB_MOVW
, R_ARM_THM_MOVW_ABS_NC
},
1746 {BFD_RELOC_ARM_THUMB_MOVT
, R_ARM_THM_MOVT_ABS
},
1747 {BFD_RELOC_ARM_THUMB_MOVW_PCREL
, R_ARM_THM_MOVW_PREL_NC
},
1748 {BFD_RELOC_ARM_THUMB_MOVT_PCREL
, R_ARM_THM_MOVT_PREL
},
1749 {BFD_RELOC_ARM_ALU_PC_G0_NC
, R_ARM_ALU_PC_G0_NC
},
1750 {BFD_RELOC_ARM_ALU_PC_G0
, R_ARM_ALU_PC_G0
},
1751 {BFD_RELOC_ARM_ALU_PC_G1_NC
, R_ARM_ALU_PC_G1_NC
},
1752 {BFD_RELOC_ARM_ALU_PC_G1
, R_ARM_ALU_PC_G1
},
1753 {BFD_RELOC_ARM_ALU_PC_G2
, R_ARM_ALU_PC_G2
},
1754 {BFD_RELOC_ARM_LDR_PC_G0
, R_ARM_LDR_PC_G0
},
1755 {BFD_RELOC_ARM_LDR_PC_G1
, R_ARM_LDR_PC_G1
},
1756 {BFD_RELOC_ARM_LDR_PC_G2
, R_ARM_LDR_PC_G2
},
1757 {BFD_RELOC_ARM_LDRS_PC_G0
, R_ARM_LDRS_PC_G0
},
1758 {BFD_RELOC_ARM_LDRS_PC_G1
, R_ARM_LDRS_PC_G1
},
1759 {BFD_RELOC_ARM_LDRS_PC_G2
, R_ARM_LDRS_PC_G2
},
1760 {BFD_RELOC_ARM_LDC_PC_G0
, R_ARM_LDC_PC_G0
},
1761 {BFD_RELOC_ARM_LDC_PC_G1
, R_ARM_LDC_PC_G1
},
1762 {BFD_RELOC_ARM_LDC_PC_G2
, R_ARM_LDC_PC_G2
},
1763 {BFD_RELOC_ARM_ALU_SB_G0_NC
, R_ARM_ALU_SB_G0_NC
},
1764 {BFD_RELOC_ARM_ALU_SB_G0
, R_ARM_ALU_SB_G0
},
1765 {BFD_RELOC_ARM_ALU_SB_G1_NC
, R_ARM_ALU_SB_G1_NC
},
1766 {BFD_RELOC_ARM_ALU_SB_G1
, R_ARM_ALU_SB_G1
},
1767 {BFD_RELOC_ARM_ALU_SB_G2
, R_ARM_ALU_SB_G2
},
1768 {BFD_RELOC_ARM_LDR_SB_G0
, R_ARM_LDR_SB_G0
},
1769 {BFD_RELOC_ARM_LDR_SB_G1
, R_ARM_LDR_SB_G1
},
1770 {BFD_RELOC_ARM_LDR_SB_G2
, R_ARM_LDR_SB_G2
},
1771 {BFD_RELOC_ARM_LDRS_SB_G0
, R_ARM_LDRS_SB_G0
},
1772 {BFD_RELOC_ARM_LDRS_SB_G1
, R_ARM_LDRS_SB_G1
},
1773 {BFD_RELOC_ARM_LDRS_SB_G2
, R_ARM_LDRS_SB_G2
},
1774 {BFD_RELOC_ARM_LDC_SB_G0
, R_ARM_LDC_SB_G0
},
1775 {BFD_RELOC_ARM_LDC_SB_G1
, R_ARM_LDC_SB_G1
},
1776 {BFD_RELOC_ARM_LDC_SB_G2
, R_ARM_LDC_SB_G2
},
1777 {BFD_RELOC_ARM_V4BX
, R_ARM_V4BX
}
1780 static reloc_howto_type
*
1781 elf32_arm_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1782 bfd_reloc_code_real_type code
)
1785 for (i
= 0; i
< NUM_ELEM (elf32_arm_reloc_map
); i
++)
1786 if (elf32_arm_reloc_map
[i
].bfd_reloc_val
== code
)
1787 return elf32_arm_howto_from_type (elf32_arm_reloc_map
[i
].elf_reloc_val
);
1792 static reloc_howto_type
*
1793 elf32_arm_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1799 i
< (sizeof (elf32_arm_howto_table_1
)
1800 / sizeof (elf32_arm_howto_table_1
[0]));
1802 if (elf32_arm_howto_table_1
[i
].name
!= NULL
1803 && strcasecmp (elf32_arm_howto_table_1
[i
].name
, r_name
) == 0)
1804 return &elf32_arm_howto_table_1
[i
];
1807 i
< (sizeof (elf32_arm_howto_table_2
)
1808 / sizeof (elf32_arm_howto_table_2
[0]));
1810 if (elf32_arm_howto_table_2
[i
].name
!= NULL
1811 && strcasecmp (elf32_arm_howto_table_2
[i
].name
, r_name
) == 0)
1812 return &elf32_arm_howto_table_2
[i
];
1817 /* Support for core dump NOTE sections */
1819 elf32_arm_nabi_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1824 switch (note
->descsz
)
1829 case 148: /* Linux/ARM 32-bit*/
1831 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1834 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1843 /* Make a ".reg/999" section. */
1844 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1845 size
, note
->descpos
+ offset
);
1849 elf32_arm_nabi_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1851 switch (note
->descsz
)
1856 case 124: /* Linux/ARM elf_prpsinfo */
1857 elf_tdata (abfd
)->core_program
1858 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
1859 elf_tdata (abfd
)->core_command
1860 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
1863 /* Note that for some reason, a spurious space is tacked
1864 onto the end of the args in some (at least one anyway)
1865 implementations, so strip it off if it exists. */
1868 char *command
= elf_tdata (abfd
)->core_command
;
1869 int n
= strlen (command
);
1871 if (0 < n
&& command
[n
- 1] == ' ')
1872 command
[n
- 1] = '\0';
1878 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1879 #define TARGET_LITTLE_NAME "elf32-littlearm"
1880 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1881 #define TARGET_BIG_NAME "elf32-bigarm"
1883 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1884 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1886 typedef unsigned long int insn32
;
1887 typedef unsigned short int insn16
;
1889 /* In lieu of proper flags, assume all EABIv4 or later objects are
1891 #define INTERWORK_FLAG(abfd) \
1892 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1893 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1895 /* The linker script knows the section names for placement.
1896 The entry_names are used to do simple name mangling on the stubs.
1897 Given a function name, and its type, the stub can be found. The
1898 name can be changed. The only requirement is the %s be present. */
1899 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1900 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1902 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1903 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1905 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1906 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1908 #define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1909 #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1911 /* The name of the dynamic interpreter. This is put in the .interp
1913 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1915 #ifdef FOUR_WORD_PLT
1917 /* The first entry in a procedure linkage table looks like
1918 this. It is set up so that any shared library function that is
1919 called before the relocation has been set up calls the dynamic
1921 static const bfd_vma elf32_arm_plt0_entry
[] =
1923 0xe52de004, /* str lr, [sp, #-4]! */
1924 0xe59fe010, /* ldr lr, [pc, #16] */
1925 0xe08fe00e, /* add lr, pc, lr */
1926 0xe5bef008, /* ldr pc, [lr, #8]! */
1929 /* Subsequent entries in a procedure linkage table look like
1931 static const bfd_vma elf32_arm_plt_entry
[] =
1933 0xe28fc600, /* add ip, pc, #NN */
1934 0xe28cca00, /* add ip, ip, #NN */
1935 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1936 0x00000000, /* unused */
1941 /* The first entry in a procedure linkage table looks like
1942 this. It is set up so that any shared library function that is
1943 called before the relocation has been set up calls the dynamic
1945 static const bfd_vma elf32_arm_plt0_entry
[] =
1947 0xe52de004, /* str lr, [sp, #-4]! */
1948 0xe59fe004, /* ldr lr, [pc, #4] */
1949 0xe08fe00e, /* add lr, pc, lr */
1950 0xe5bef008, /* ldr pc, [lr, #8]! */
1951 0x00000000, /* &GOT[0] - . */
1954 /* Subsequent entries in a procedure linkage table look like
1956 static const bfd_vma elf32_arm_plt_entry
[] =
1958 0xe28fc600, /* add ip, pc, #0xNN00000 */
1959 0xe28cca00, /* add ip, ip, #0xNN000 */
1960 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1965 /* The format of the first entry in the procedure linkage table
1966 for a VxWorks executable. */
1967 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry
[] =
1969 0xe52dc008, /* str ip,[sp,#-8]! */
1970 0xe59fc000, /* ldr ip,[pc] */
1971 0xe59cf008, /* ldr pc,[ip,#8] */
1972 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1975 /* The format of subsequent entries in a VxWorks executable. */
1976 static const bfd_vma elf32_arm_vxworks_exec_plt_entry
[] =
1978 0xe59fc000, /* ldr ip,[pc] */
1979 0xe59cf000, /* ldr pc,[ip] */
1980 0x00000000, /* .long @got */
1981 0xe59fc000, /* ldr ip,[pc] */
1982 0xea000000, /* b _PLT */
1983 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1986 /* The format of entries in a VxWorks shared library. */
1987 static const bfd_vma elf32_arm_vxworks_shared_plt_entry
[] =
1989 0xe59fc000, /* ldr ip,[pc] */
1990 0xe79cf009, /* ldr pc,[ip,r9] */
1991 0x00000000, /* .long @got */
1992 0xe59fc000, /* ldr ip,[pc] */
1993 0xe599f008, /* ldr pc,[r9,#8] */
1994 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1997 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1998 #define PLT_THUMB_STUB_SIZE 4
1999 static const bfd_vma elf32_arm_plt_thumb_stub
[] =
2005 /* The entries in a PLT when using a DLL-based target with multiple
2007 static const bfd_vma elf32_arm_symbian_plt_entry
[] =
2009 0xe51ff004, /* ldr pc, [pc, #-4] */
2010 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2013 /* Used to build a map of a section. This is required for mixed-endian
2016 typedef struct elf32_elf_section_map
2021 elf32_arm_section_map
;
2023 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2027 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
,
2028 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
,
2029 VFP11_ERRATUM_ARM_VENEER
,
2030 VFP11_ERRATUM_THUMB_VENEER
2032 elf32_vfp11_erratum_type
;
2034 typedef struct elf32_vfp11_erratum_list
2036 struct elf32_vfp11_erratum_list
*next
;
2042 struct elf32_vfp11_erratum_list
*veneer
;
2043 unsigned int vfp_insn
;
2047 struct elf32_vfp11_erratum_list
*branch
;
2051 elf32_vfp11_erratum_type type
;
2053 elf32_vfp11_erratum_list
;
2055 typedef struct _arm_elf_section_data
2057 struct bfd_elf_section_data elf
;
2058 unsigned int mapcount
;
2059 unsigned int mapsize
;
2060 elf32_arm_section_map
*map
;
2061 unsigned int erratumcount
;
2062 elf32_vfp11_erratum_list
*erratumlist
;
2064 _arm_elf_section_data
;
2066 #define elf32_arm_section_data(sec) \
2067 ((_arm_elf_section_data *) elf_section_data (sec))
2069 /* The size of the thread control block. */
2072 struct elf_arm_obj_tdata
2074 struct elf_obj_tdata root
;
2076 /* tls_type for each local got entry. */
2077 char *local_got_tls_type
;
2079 /* Zero to warn when linking objects with incompatible enum sizes. */
2080 int no_enum_size_warning
;
2083 #define elf_arm_tdata(bfd) \
2084 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
2086 #define elf32_arm_local_got_tls_type(bfd) \
2087 (elf_arm_tdata (bfd)->local_got_tls_type)
2089 #define is_arm_elf(bfd) \
2090 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2091 && elf_tdata (bfd) != NULL \
2092 && elf_object_id (bfd) == ARM_ELF_TDATA)
2095 elf32_arm_mkobject (bfd
*abfd
)
2097 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_arm_obj_tdata
),
2101 /* The ARM linker needs to keep track of the number of relocs that it
2102 decides to copy in check_relocs for each symbol. This is so that
2103 it can discard PC relative relocs if it doesn't need them when
2104 linking with -Bsymbolic. We store the information in a field
2105 extending the regular ELF linker hash table. */
2107 /* This structure keeps track of the number of relocs we have copied
2108 for a given symbol. */
2109 struct elf32_arm_relocs_copied
2112 struct elf32_arm_relocs_copied
* next
;
2113 /* A section in dynobj. */
2115 /* Number of relocs copied in this section. */
2116 bfd_size_type count
;
2117 /* Number of PC-relative relocs copied in this section. */
2118 bfd_size_type pc_count
;
2121 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2123 /* Arm ELF linker hash entry. */
2124 struct elf32_arm_link_hash_entry
2126 struct elf_link_hash_entry root
;
2128 /* Number of PC relative relocs copied for this symbol. */
2129 struct elf32_arm_relocs_copied
* relocs_copied
;
2131 /* We reference count Thumb references to a PLT entry separately,
2132 so that we can emit the Thumb trampoline only if needed. */
2133 bfd_signed_vma plt_thumb_refcount
;
2135 /* Some references from Thumb code may be eliminated by BL->BLX
2136 conversion, so record them separately. */
2137 bfd_signed_vma plt_maybe_thumb_refcount
;
2139 /* Since PLT entries have variable size if the Thumb prologue is
2140 used, we need to record the index into .got.plt instead of
2141 recomputing it from the PLT offset. */
2142 bfd_signed_vma plt_got_offset
;
2144 #define GOT_UNKNOWN 0
2145 #define GOT_NORMAL 1
2146 #define GOT_TLS_GD 2
2147 #define GOT_TLS_IE 4
2148 unsigned char tls_type
;
2150 /* The symbol marking the real symbol location for exported thumb
2151 symbols with Arm stubs. */
2152 struct elf_link_hash_entry
*export_glue
;
2155 /* Traverse an arm ELF linker hash table. */
2156 #define elf32_arm_link_hash_traverse(table, func, info) \
2157 (elf_link_hash_traverse \
2159 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2162 /* Get the ARM elf linker hash table from a link_info structure. */
2163 #define elf32_arm_hash_table(info) \
2164 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2166 /* ARM ELF linker hash table. */
2167 struct elf32_arm_link_hash_table
2169 /* The main hash table. */
2170 struct elf_link_hash_table root
;
2172 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2173 bfd_size_type thumb_glue_size
;
2175 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2176 bfd_size_type arm_glue_size
;
2178 /* The size in bytes of section containing the ARMv4 BX veneers. */
2179 bfd_size_type bx_glue_size
;
2181 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2182 veneer has been populated. */
2183 bfd_vma bx_glue_offset
[15];
2185 /* The size in bytes of the section containing glue for VFP11 erratum
2187 bfd_size_type vfp11_erratum_glue_size
;
2189 /* An arbitrary input BFD chosen to hold the glue sections. */
2190 bfd
* bfd_of_glue_owner
;
2192 /* Nonzero to output a BE8 image. */
2195 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2196 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2199 /* The relocation to use for R_ARM_TARGET2 relocations. */
2202 /* 0 = Ignore R_ARM_V4BX.
2203 1 = Convert BX to MOV PC.
2204 2 = Generate v4 interworing stubs. */
2207 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2210 /* What sort of code sequences we should look for which may trigger the
2211 VFP11 denorm erratum. */
2212 bfd_arm_vfp11_fix vfp11_fix
;
2214 /* Global counter for the number of fixes we have emitted. */
2215 int num_vfp11_fixes
;
2217 /* Nonzero to force PIC branch veneers. */
2220 /* The number of bytes in the initial entry in the PLT. */
2221 bfd_size_type plt_header_size
;
2223 /* The number of bytes in the subsequent PLT etries. */
2224 bfd_size_type plt_entry_size
;
2226 /* True if the target system is VxWorks. */
2229 /* True if the target system is Symbian OS. */
2232 /* True if the target uses REL relocations. */
2235 /* Short-cuts to get to dynamic linker sections. */
2244 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2247 /* Data for R_ARM_TLS_LDM32 relocations. */
2249 bfd_signed_vma refcount
;
2253 /* Small local sym to section mapping cache. */
2254 struct sym_sec_cache sym_sec
;
2256 /* For convenience in allocate_dynrelocs. */
2260 /* Create an entry in an ARM ELF linker hash table. */
2262 static struct bfd_hash_entry
*
2263 elf32_arm_link_hash_newfunc (struct bfd_hash_entry
* entry
,
2264 struct bfd_hash_table
* table
,
2265 const char * string
)
2267 struct elf32_arm_link_hash_entry
* ret
=
2268 (struct elf32_arm_link_hash_entry
*) entry
;
2270 /* Allocate the structure if it has not already been allocated by a
2272 if (ret
== (struct elf32_arm_link_hash_entry
*) NULL
)
2273 ret
= bfd_hash_allocate (table
, sizeof (struct elf32_arm_link_hash_entry
));
2275 return (struct bfd_hash_entry
*) ret
;
2277 /* Call the allocation method of the superclass. */
2278 ret
= ((struct elf32_arm_link_hash_entry
*)
2279 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2283 ret
->relocs_copied
= NULL
;
2284 ret
->tls_type
= GOT_UNKNOWN
;
2285 ret
->plt_thumb_refcount
= 0;
2286 ret
->plt_maybe_thumb_refcount
= 0;
2287 ret
->plt_got_offset
= -1;
2288 ret
->export_glue
= NULL
;
2291 return (struct bfd_hash_entry
*) ret
;
2294 /* Return true if NAME is the name of the relocation section associated
2298 reloc_section_p (struct elf32_arm_link_hash_table
*htab
,
2299 const char *name
, asection
*s
)
2302 return CONST_STRNEQ (name
, ".rel") && strcmp (s
->name
, name
+ 4) == 0;
2304 return CONST_STRNEQ (name
, ".rela") && strcmp (s
->name
, name
+ 5) == 0;
2307 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2308 shortcuts to them in our hash table. */
2311 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2313 struct elf32_arm_link_hash_table
*htab
;
2315 htab
= elf32_arm_hash_table (info
);
2316 /* BPABI objects never have a GOT, or associated sections. */
2317 if (htab
->symbian_p
)
2320 if (! _bfd_elf_create_got_section (dynobj
, info
))
2323 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
2324 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
2325 if (!htab
->sgot
|| !htab
->sgotplt
)
2328 htab
->srelgot
= bfd_make_section_with_flags (dynobj
,
2329 RELOC_SECTION (htab
, ".got"),
2330 (SEC_ALLOC
| SEC_LOAD
2333 | SEC_LINKER_CREATED
2335 if (htab
->srelgot
== NULL
2336 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
2341 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2342 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2346 elf32_arm_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
2348 struct elf32_arm_link_hash_table
*htab
;
2350 htab
= elf32_arm_hash_table (info
);
2351 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
2354 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
2357 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
2358 htab
->srelplt
= bfd_get_section_by_name (dynobj
,
2359 RELOC_SECTION (htab
, ".plt"));
2360 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
2362 htab
->srelbss
= bfd_get_section_by_name (dynobj
,
2363 RELOC_SECTION (htab
, ".bss"));
2365 if (htab
->vxworks_p
)
2367 if (!elf_vxworks_create_dynamic_sections (dynobj
, info
, &htab
->srelplt2
))
2372 htab
->plt_header_size
= 0;
2373 htab
->plt_entry_size
2374 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry
);
2378 htab
->plt_header_size
2379 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry
);
2380 htab
->plt_entry_size
2381 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry
);
2388 || (!info
->shared
&& !htab
->srelbss
))
2394 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2397 elf32_arm_copy_indirect_symbol (struct bfd_link_info
*info
,
2398 struct elf_link_hash_entry
*dir
,
2399 struct elf_link_hash_entry
*ind
)
2401 struct elf32_arm_link_hash_entry
*edir
, *eind
;
2403 edir
= (struct elf32_arm_link_hash_entry
*) dir
;
2404 eind
= (struct elf32_arm_link_hash_entry
*) ind
;
2406 if (eind
->relocs_copied
!= NULL
)
2408 if (edir
->relocs_copied
!= NULL
)
2410 struct elf32_arm_relocs_copied
**pp
;
2411 struct elf32_arm_relocs_copied
*p
;
2413 /* Add reloc counts against the indirect sym to the direct sym
2414 list. Merge any entries against the same section. */
2415 for (pp
= &eind
->relocs_copied
; (p
= *pp
) != NULL
; )
2417 struct elf32_arm_relocs_copied
*q
;
2419 for (q
= edir
->relocs_copied
; q
!= NULL
; q
= q
->next
)
2420 if (q
->section
== p
->section
)
2422 q
->pc_count
+= p
->pc_count
;
2423 q
->count
+= p
->count
;
2430 *pp
= edir
->relocs_copied
;
2433 edir
->relocs_copied
= eind
->relocs_copied
;
2434 eind
->relocs_copied
= NULL
;
2437 if (ind
->root
.type
== bfd_link_hash_indirect
)
2439 /* Copy over PLT info. */
2440 edir
->plt_thumb_refcount
+= eind
->plt_thumb_refcount
;
2441 eind
->plt_thumb_refcount
= 0;
2442 edir
->plt_maybe_thumb_refcount
+= eind
->plt_maybe_thumb_refcount
;
2443 eind
->plt_maybe_thumb_refcount
= 0;
2445 if (dir
->got
.refcount
<= 0)
2447 edir
->tls_type
= eind
->tls_type
;
2448 eind
->tls_type
= GOT_UNKNOWN
;
2452 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2455 /* Create an ARM elf linker hash table. */
2457 static struct bfd_link_hash_table
*
2458 elf32_arm_link_hash_table_create (bfd
*abfd
)
2460 struct elf32_arm_link_hash_table
*ret
;
2461 bfd_size_type amt
= sizeof (struct elf32_arm_link_hash_table
);
2463 ret
= bfd_malloc (amt
);
2467 if (!_bfd_elf_link_hash_table_init (& ret
->root
, abfd
,
2468 elf32_arm_link_hash_newfunc
,
2469 sizeof (struct elf32_arm_link_hash_entry
)))
2476 ret
->sgotplt
= NULL
;
2477 ret
->srelgot
= NULL
;
2479 ret
->srelplt
= NULL
;
2480 ret
->sdynbss
= NULL
;
2481 ret
->srelbss
= NULL
;
2482 ret
->srelplt2
= NULL
;
2483 ret
->thumb_glue_size
= 0;
2484 ret
->arm_glue_size
= 0;
2485 ret
->bx_glue_size
= 0;
2486 memset (ret
->bx_glue_offset
, 0, sizeof(ret
->bx_glue_offset
));
2487 ret
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
2488 ret
->vfp11_erratum_glue_size
= 0;
2489 ret
->num_vfp11_fixes
= 0;
2490 ret
->bfd_of_glue_owner
= NULL
;
2491 ret
->byteswap_code
= 0;
2492 ret
->target1_is_rel
= 0;
2493 ret
->target2_reloc
= R_ARM_NONE
;
2494 #ifdef FOUR_WORD_PLT
2495 ret
->plt_header_size
= 16;
2496 ret
->plt_entry_size
= 16;
2498 ret
->plt_header_size
= 20;
2499 ret
->plt_entry_size
= 12;
2506 ret
->sym_sec
.abfd
= NULL
;
2508 ret
->tls_ldm_got
.refcount
= 0;
2510 return &ret
->root
.root
;
2513 /* Locate the Thumb encoded calling stub for NAME. */
2515 static struct elf_link_hash_entry
*
2516 find_thumb_glue (struct bfd_link_info
*link_info
,
2518 char **error_message
)
2521 struct elf_link_hash_entry
*hash
;
2522 struct elf32_arm_link_hash_table
*hash_table
;
2524 /* We need a pointer to the armelf specific hash table. */
2525 hash_table
= elf32_arm_hash_table (link_info
);
2527 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2528 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2530 BFD_ASSERT (tmp_name
);
2532 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2534 hash
= elf_link_hash_lookup
2535 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2538 && asprintf (error_message
, _("unable to find THUMB glue '%s' for '%s'"),
2539 tmp_name
, name
) == -1)
2540 *error_message
= (char *) bfd_errmsg (bfd_error_system_call
);
2547 /* Locate the ARM encoded calling stub for NAME. */
2549 static struct elf_link_hash_entry
*
2550 find_arm_glue (struct bfd_link_info
*link_info
,
2552 char **error_message
)
2555 struct elf_link_hash_entry
*myh
;
2556 struct elf32_arm_link_hash_table
*hash_table
;
2558 /* We need a pointer to the elfarm specific hash table. */
2559 hash_table
= elf32_arm_hash_table (link_info
);
2561 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2562 + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2564 BFD_ASSERT (tmp_name
);
2566 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2568 myh
= elf_link_hash_lookup
2569 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2572 && asprintf (error_message
, _("unable to find ARM glue '%s' for '%s'"),
2573 tmp_name
, name
) == -1)
2574 *error_message
= (char *) bfd_errmsg (bfd_error_system_call
);
2581 /* ARM->Thumb glue (static images):
2585 ldr r12, __func_addr
2588 .word func @ behave as if you saw a ARM_32 reloc.
2595 .word func @ behave as if you saw a ARM_32 reloc.
2597 (relocatable images)
2600 ldr r12, __func_offset
2607 #define ARM2THUMB_STATIC_GLUE_SIZE 12
2608 static const insn32 a2t1_ldr_insn
= 0xe59fc000;
2609 static const insn32 a2t2_bx_r12_insn
= 0xe12fff1c;
2610 static const insn32 a2t3_func_addr_insn
= 0x00000001;
2612 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
2613 static const insn32 a2t1v5_ldr_insn
= 0xe51ff004;
2614 static const insn32 a2t2v5_func_addr_insn
= 0x00000001;
2616 #define ARM2THUMB_PIC_GLUE_SIZE 16
2617 static const insn32 a2t1p_ldr_insn
= 0xe59fc004;
2618 static const insn32 a2t2p_add_pc_insn
= 0xe08cc00f;
2619 static const insn32 a2t3p_bx_r12_insn
= 0xe12fff1c;
2621 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
2625 __func_from_thumb: __func_from_thumb:
2627 nop ldr r6, __func_addr
2629 __func_change_to_arm: bx r6
2631 __func_back_to_thumb:
2637 #define THUMB2ARM_GLUE_SIZE 8
2638 static const insn16 t2a1_bx_pc_insn
= 0x4778;
2639 static const insn16 t2a2_noop_insn
= 0x46c0;
2640 static const insn32 t2a3_b_insn
= 0xea000000;
2642 #define VFP11_ERRATUM_VENEER_SIZE 8
2644 #define ARM_BX_VENEER_SIZE 12
2645 static const insn32 armbx1_tst_insn
= 0xe3100001;
2646 static const insn32 armbx2_moveq_insn
= 0x01a0f000;
2647 static const insn32 armbx3_bx_insn
= 0xe12fff10;
2649 #ifndef ELFARM_NABI_C_INCLUDED
2651 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info
* info
)
2655 struct elf32_arm_link_hash_table
* globals
;
2657 globals
= elf32_arm_hash_table (info
);
2659 BFD_ASSERT (globals
!= NULL
);
2661 if (globals
->arm_glue_size
!= 0)
2663 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2665 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
2666 ARM2THUMB_GLUE_SECTION_NAME
);
2668 BFD_ASSERT (s
!= NULL
);
2670 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->arm_glue_size
);
2672 BFD_ASSERT (s
->size
== globals
->arm_glue_size
);
2676 if (globals
->thumb_glue_size
!= 0)
2678 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2680 s
= bfd_get_section_by_name
2681 (globals
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2683 BFD_ASSERT (s
!= NULL
);
2685 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->thumb_glue_size
);
2687 BFD_ASSERT (s
->size
== globals
->thumb_glue_size
);
2691 if (globals
->vfp11_erratum_glue_size
!= 0)
2693 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2695 s
= bfd_get_section_by_name
2696 (globals
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
2698 BFD_ASSERT (s
!= NULL
);
2700 foo
= bfd_alloc (globals
->bfd_of_glue_owner
,
2701 globals
->vfp11_erratum_glue_size
);
2703 BFD_ASSERT (s
->size
== globals
->vfp11_erratum_glue_size
);
2707 if (globals
->bx_glue_size
!= 0)
2709 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2711 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
2712 ARM_BX_GLUE_SECTION_NAME
);
2714 BFD_ASSERT (s
!= NULL
);
2716 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->bx_glue_size
);
2718 BFD_ASSERT (s
->size
== globals
->bx_glue_size
);
2725 /* Allocate space and symbols for calling a Thumb function from Arm mode.
2726 returns the symbol identifying teh stub. */
2727 static struct elf_link_hash_entry
*
2728 record_arm_to_thumb_glue (struct bfd_link_info
* link_info
,
2729 struct elf_link_hash_entry
* h
)
2731 const char * name
= h
->root
.root
.string
;
2734 struct elf_link_hash_entry
* myh
;
2735 struct bfd_link_hash_entry
* bh
;
2736 struct elf32_arm_link_hash_table
* globals
;
2740 globals
= elf32_arm_hash_table (link_info
);
2742 BFD_ASSERT (globals
!= NULL
);
2743 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2745 s
= bfd_get_section_by_name
2746 (globals
->bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
2748 BFD_ASSERT (s
!= NULL
);
2750 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2752 BFD_ASSERT (tmp_name
);
2754 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2756 myh
= elf_link_hash_lookup
2757 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2761 /* We've already seen this guy. */
2766 /* The only trick here is using hash_table->arm_glue_size as the value.
2767 Even though the section isn't allocated yet, this is where we will be
2770 val
= globals
->arm_glue_size
+ 1;
2771 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
2772 tmp_name
, BSF_GLOBAL
, s
, val
,
2773 NULL
, TRUE
, FALSE
, &bh
);
2775 myh
= (struct elf_link_hash_entry
*) bh
;
2776 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2777 myh
->forced_local
= 1;
2781 if (link_info
->shared
|| globals
->root
.is_relocatable_executable
2782 || globals
->pic_veneer
)
2783 size
= ARM2THUMB_PIC_GLUE_SIZE
;
2784 else if (globals
->use_blx
)
2785 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
2787 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
2790 globals
->arm_glue_size
+= size
;
2796 record_thumb_to_arm_glue (struct bfd_link_info
*link_info
,
2797 struct elf_link_hash_entry
*h
)
2799 const char *name
= h
->root
.root
.string
;
2802 struct elf_link_hash_entry
*myh
;
2803 struct bfd_link_hash_entry
*bh
;
2804 struct elf32_arm_link_hash_table
*hash_table
;
2807 hash_table
= elf32_arm_hash_table (link_info
);
2809 BFD_ASSERT (hash_table
!= NULL
);
2810 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
2812 s
= bfd_get_section_by_name
2813 (hash_table
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2815 BFD_ASSERT (s
!= NULL
);
2817 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2818 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2820 BFD_ASSERT (tmp_name
);
2822 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2824 myh
= elf_link_hash_lookup
2825 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2829 /* We've already seen this guy. */
2835 val
= hash_table
->thumb_glue_size
+ 1;
2836 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2837 tmp_name
, BSF_GLOBAL
, s
, val
,
2838 NULL
, TRUE
, FALSE
, &bh
);
2840 /* If we mark it 'Thumb', the disassembler will do a better job. */
2841 myh
= (struct elf_link_hash_entry
*) bh
;
2842 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
2843 myh
->forced_local
= 1;
2847 #define CHANGE_TO_ARM "__%s_change_to_arm"
2848 #define BACK_FROM_ARM "__%s_back_from_arm"
2850 /* Allocate another symbol to mark where we switch to Arm mode. */
2851 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2852 + strlen (CHANGE_TO_ARM
) + 1);
2854 BFD_ASSERT (tmp_name
);
2856 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
2859 val
= hash_table
->thumb_glue_size
+ 4,
2860 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2861 tmp_name
, BSF_LOCAL
, s
, val
,
2862 NULL
, TRUE
, FALSE
, &bh
);
2866 s
->size
+= THUMB2ARM_GLUE_SIZE
;
2867 hash_table
->thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
2873 /* Allocate space for ARMv4 BX veneers. */
2876 record_arm_bx_glue (struct bfd_link_info
* link_info
, int reg
)
2879 struct elf32_arm_link_hash_table
*globals
;
2881 struct elf_link_hash_entry
*myh
;
2882 struct bfd_link_hash_entry
*bh
;
2885 /* BX PC does not need a veneer. */
2889 globals
= elf32_arm_hash_table (link_info
);
2891 BFD_ASSERT (globals
!= NULL
);
2892 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2894 /* Check if this veneer has already been allocated. */
2895 if (globals
->bx_glue_offset
[reg
])
2898 s
= bfd_get_section_by_name
2899 (globals
->bfd_of_glue_owner
, ARM_BX_GLUE_SECTION_NAME
);
2901 BFD_ASSERT (s
!= NULL
);
2903 /* Add symbol for veneer. */
2904 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (ARM_BX_GLUE_ENTRY_NAME
) + 1);
2906 BFD_ASSERT (tmp_name
);
2908 sprintf (tmp_name
, ARM_BX_GLUE_ENTRY_NAME
, reg
);
2910 myh
= elf_link_hash_lookup
2911 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
2913 BFD_ASSERT (myh
== NULL
);
2916 val
= globals
->bx_glue_size
;
2917 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
2918 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
2919 NULL
, TRUE
, FALSE
, &bh
);
2921 myh
= (struct elf_link_hash_entry
*) bh
;
2922 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2923 myh
->forced_local
= 1;
2925 s
->size
+= ARM_BX_VENEER_SIZE
;
2926 globals
->bx_glue_offset
[reg
] = globals
->bx_glue_size
| 2;
2927 globals
->bx_glue_size
+= ARM_BX_VENEER_SIZE
;
2931 /* Add an entry to the code/data map for section SEC. */
2934 elf32_arm_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
2936 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
2937 unsigned int newidx
;
2939 if (sec_data
->map
== NULL
)
2941 sec_data
->map
= bfd_malloc (sizeof (elf32_arm_section_map
));
2942 sec_data
->mapcount
= 0;
2943 sec_data
->mapsize
= 1;
2946 newidx
= sec_data
->mapcount
++;
2948 if (sec_data
->mapcount
> sec_data
->mapsize
)
2950 sec_data
->mapsize
*= 2;
2951 sec_data
->map
= bfd_realloc_or_free (sec_data
->map
, sec_data
->mapsize
2952 * sizeof (elf32_arm_section_map
));
2957 sec_data
->map
[newidx
].vma
= vma
;
2958 sec_data
->map
[newidx
].type
= type
;
2963 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
2964 veneers are handled for now. */
2967 record_vfp11_erratum_veneer (struct bfd_link_info
*link_info
,
2968 elf32_vfp11_erratum_list
*branch
,
2970 asection
*branch_sec
,
2971 unsigned int offset
)
2974 struct elf32_arm_link_hash_table
*hash_table
;
2976 struct elf_link_hash_entry
*myh
;
2977 struct bfd_link_hash_entry
*bh
;
2979 struct _arm_elf_section_data
*sec_data
;
2981 elf32_vfp11_erratum_list
*newerr
;
2983 hash_table
= elf32_arm_hash_table (link_info
);
2985 BFD_ASSERT (hash_table
!= NULL
);
2986 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
2988 s
= bfd_get_section_by_name
2989 (hash_table
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
2991 sec_data
= elf32_arm_section_data (s
);
2993 BFD_ASSERT (s
!= NULL
);
2995 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
2996 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
2998 BFD_ASSERT (tmp_name
);
3000 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
3001 hash_table
->num_vfp11_fixes
);
3003 myh
= elf_link_hash_lookup
3004 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
3006 BFD_ASSERT (myh
== NULL
);
3009 val
= hash_table
->vfp11_erratum_glue_size
;
3010 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
3011 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
3012 NULL
, TRUE
, FALSE
, &bh
);
3014 myh
= (struct elf_link_hash_entry
*) bh
;
3015 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
3016 myh
->forced_local
= 1;
3018 /* Link veneer back to calling location. */
3019 errcount
= ++(sec_data
->erratumcount
);
3020 newerr
= bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
3022 newerr
->type
= VFP11_ERRATUM_ARM_VENEER
;
3024 newerr
->u
.v
.branch
= branch
;
3025 newerr
->u
.v
.id
= hash_table
->num_vfp11_fixes
;
3026 branch
->u
.b
.veneer
= newerr
;
3028 newerr
->next
= sec_data
->erratumlist
;
3029 sec_data
->erratumlist
= newerr
;
3031 /* A symbol for the return from the veneer. */
3032 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
3033 hash_table
->num_vfp11_fixes
);
3035 myh
= elf_link_hash_lookup
3036 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
3043 _bfd_generic_link_add_one_symbol (link_info
, branch_bfd
, tmp_name
, BSF_LOCAL
,
3044 branch_sec
, val
, NULL
, TRUE
, FALSE
, &bh
);
3046 myh
= (struct elf_link_hash_entry
*) bh
;
3047 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
3048 myh
->forced_local
= 1;
3052 /* Generate a mapping symbol for the veneer section, and explicitly add an
3053 entry for that symbol to the code/data map for the section. */
3054 if (hash_table
->vfp11_erratum_glue_size
== 0)
3057 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
3058 ever requires this erratum fix. */
3059 _bfd_generic_link_add_one_symbol (link_info
,
3060 hash_table
->bfd_of_glue_owner
, "$a",
3061 BSF_LOCAL
, s
, 0, NULL
,
3064 myh
= (struct elf_link_hash_entry
*) bh
;
3065 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
3066 myh
->forced_local
= 1;
3068 /* The elf32_arm_init_maps function only cares about symbols from input
3069 BFDs. We must make a note of this generated mapping symbol
3070 ourselves so that code byteswapping works properly in
3071 elf32_arm_write_section. */
3072 elf32_arm_section_map_add (s
, 'a', 0);
3075 s
->size
+= VFP11_ERRATUM_VENEER_SIZE
;
3076 hash_table
->vfp11_erratum_glue_size
+= VFP11_ERRATUM_VENEER_SIZE
;
3077 hash_table
->num_vfp11_fixes
++;
3079 /* The offset of the veneer. */
3083 /* Add the glue sections to ABFD. This function is called from the
3084 linker scripts in ld/emultempl/{armelf}.em. */
3087 bfd_elf32_arm_add_glue_sections_to_bfd (bfd
*abfd
,
3088 struct bfd_link_info
*info
)
3093 /* If we are only performing a partial
3094 link do not bother adding the glue. */
3095 if (info
->relocatable
)
3098 sec
= bfd_get_section_by_name (abfd
, ARM2THUMB_GLUE_SECTION_NAME
);
3102 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
3103 will prevent elf_link_input_bfd() from processing the contents
3105 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3106 | SEC_CODE
| SEC_READONLY
);
3108 sec
= bfd_make_section_with_flags (abfd
,
3109 ARM2THUMB_GLUE_SECTION_NAME
,
3113 || !bfd_set_section_alignment (abfd
, sec
, 2))
3116 /* Set the gc mark to prevent the section from being removed by garbage
3117 collection, despite the fact that no relocs refer to this section. */
3121 sec
= bfd_get_section_by_name (abfd
, THUMB2ARM_GLUE_SECTION_NAME
);
3125 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3126 | SEC_CODE
| SEC_READONLY
);
3128 sec
= bfd_make_section_with_flags (abfd
,
3129 THUMB2ARM_GLUE_SECTION_NAME
,
3133 || !bfd_set_section_alignment (abfd
, sec
, 2))
3139 sec
= bfd_get_section_by_name (abfd
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
3143 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3144 | SEC_CODE
| SEC_READONLY
);
3146 sec
= bfd_make_section_with_flags (abfd
,
3147 VFP11_ERRATUM_VENEER_SECTION_NAME
,
3151 || !bfd_set_section_alignment (abfd
, sec
, 2))
3157 sec
= bfd_get_section_by_name (abfd
, ARM_BX_GLUE_SECTION_NAME
);
3161 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3162 | SEC_CODE
| SEC_READONLY
);
3164 sec
= bfd_make_section_with_flags (abfd
,
3165 ARM_BX_GLUE_SECTION_NAME
,
3169 || !bfd_set_section_alignment (abfd
, sec
, 2))
3178 /* Select a BFD to be used to hold the sections used by the glue code.
3179 This function is called from the linker scripts in ld/emultempl/
3183 bfd_elf32_arm_get_bfd_for_interworking (bfd
*abfd
, struct bfd_link_info
*info
)
3185 struct elf32_arm_link_hash_table
*globals
;
3187 /* If we are only performing a partial link
3188 do not bother getting a bfd to hold the glue. */
3189 if (info
->relocatable
)
3192 /* Make sure we don't attach the glue sections to a dynamic object. */
3193 BFD_ASSERT (!(abfd
->flags
& DYNAMIC
));
3195 globals
= elf32_arm_hash_table (info
);
3197 BFD_ASSERT (globals
!= NULL
);
3199 if (globals
->bfd_of_glue_owner
!= NULL
)
3202 /* Save the bfd for later use. */
3203 globals
->bfd_of_glue_owner
= abfd
;
3208 static void check_use_blx(struct elf32_arm_link_hash_table
*globals
)
3210 if (bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
3212 globals
->use_blx
= 1;
3216 bfd_elf32_arm_process_before_allocation (bfd
*abfd
,
3217 struct bfd_link_info
*link_info
)
3219 Elf_Internal_Shdr
*symtab_hdr
;
3220 Elf_Internal_Rela
*internal_relocs
= NULL
;
3221 Elf_Internal_Rela
*irel
, *irelend
;
3222 bfd_byte
*contents
= NULL
;
3225 struct elf32_arm_link_hash_table
*globals
;
3227 /* If we are only performing a partial link do not bother
3228 to construct any glue. */
3229 if (link_info
->relocatable
)
3232 /* Here we have a bfd that is to be included on the link. We have a
3233 hook to do reloc rummaging, before section sizes are nailed down. */
3234 globals
= elf32_arm_hash_table (link_info
);
3236 BFD_ASSERT (globals
!= NULL
);
3238 check_use_blx (globals
);
3240 if (globals
->byteswap_code
&& !bfd_big_endian (abfd
))
3242 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
3247 /* PR 5398: If we have not decided to include any loadable sections in
3248 the output then we will not have a glue owner bfd. This is OK, it
3249 just means that there is nothing else for us to do here. */
3250 if (globals
->bfd_of_glue_owner
== NULL
)
3253 /* Rummage around all the relocs and map the glue vectors. */
3254 sec
= abfd
->sections
;
3259 for (; sec
!= NULL
; sec
= sec
->next
)
3261 if (sec
->reloc_count
== 0)
3264 if ((sec
->flags
& SEC_EXCLUDE
) != 0)
3267 symtab_hdr
= & elf_symtab_hdr (abfd
);
3269 /* Load the relocs. */
3271 = _bfd_elf_link_read_relocs (abfd
, sec
, (void *) NULL
,
3272 (Elf_Internal_Rela
*) NULL
, FALSE
);
3274 if (internal_relocs
== NULL
)
3277 irelend
= internal_relocs
+ sec
->reloc_count
;
3278 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
3281 unsigned long r_index
;
3283 struct elf_link_hash_entry
*h
;
3285 r_type
= ELF32_R_TYPE (irel
->r_info
);
3286 r_index
= ELF32_R_SYM (irel
->r_info
);
3288 /* These are the only relocation types we care about. */
3289 if ( r_type
!= R_ARM_PC24
3290 && r_type
!= R_ARM_PLT32
3291 && r_type
!= R_ARM_CALL
3292 && r_type
!= R_ARM_JUMP24
3293 && r_type
!= R_ARM_THM_CALL
3294 && r_type
!= R_ARM_THM_JUMP24
3295 && (r_type
!= R_ARM_V4BX
|| globals
->fix_v4bx
< 2))
3298 /* Get the section contents if we haven't done so already. */
3299 if (contents
== NULL
)
3301 /* Get cached copy if it exists. */
3302 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
3303 contents
= elf_section_data (sec
)->this_hdr
.contents
;
3306 /* Go get them off disk. */
3307 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
3312 if (r_type
== R_ARM_V4BX
)
3316 reg
= bfd_get_32 (abfd
, contents
+ irel
->r_offset
) & 0xf;
3317 record_arm_bx_glue (link_info
, reg
);
3321 /* If the relocation is not against a symbol it cannot concern us. */
3324 /* We don't care about local symbols. */
3325 if (r_index
< symtab_hdr
->sh_info
)
3328 /* This is an external symbol. */
3329 r_index
-= symtab_hdr
->sh_info
;
3330 h
= (struct elf_link_hash_entry
*)
3331 elf_sym_hashes (abfd
)[r_index
];
3333 /* If the relocation is against a static symbol it must be within
3334 the current section and so cannot be a cross ARM/Thumb relocation. */
3338 /* If the call will go through a PLT entry then we do not need
3340 if (globals
->splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
3349 /* This one is a call from arm code. We need to look up
3350 the target of the call. If it is a thumb target, we
3352 if (ELF_ST_TYPE(h
->type
) == STT_ARM_TFUNC
3353 && !(r_type
== R_ARM_CALL
&& globals
->use_blx
))
3354 record_arm_to_thumb_glue (link_info
, h
);
3357 case R_ARM_THM_CALL
:
3358 case R_ARM_THM_JUMP24
:
3359 /* This one is a call from thumb code. We look
3360 up the target of the call. If it is not a thumb
3361 target, we insert glue. */
3362 if (ELF_ST_TYPE (h
->type
) != STT_ARM_TFUNC
3363 && !(globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
3364 && h
->root
.type
!= bfd_link_hash_undefweak
)
3365 record_thumb_to_arm_glue (link_info
, h
);
3373 if (contents
!= NULL
3374 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3378 if (internal_relocs
!= NULL
3379 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3380 free (internal_relocs
);
3381 internal_relocs
= NULL
;
3387 if (contents
!= NULL
3388 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3390 if (internal_relocs
!= NULL
3391 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3392 free (internal_relocs
);
3399 /* Initialise maps of ARM/Thumb/data for input BFDs. */
3402 bfd_elf32_arm_init_maps (bfd
*abfd
)
3404 Elf_Internal_Sym
*isymbuf
;
3405 Elf_Internal_Shdr
*hdr
;
3406 unsigned int i
, localsyms
;
3408 if ((abfd
->flags
& DYNAMIC
) != 0)
3411 hdr
= & elf_symtab_hdr (abfd
);
3412 localsyms
= hdr
->sh_info
;
3414 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
3415 should contain the number of local symbols, which should come before any
3416 global symbols. Mapping symbols are always local. */
3417 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
,
3420 /* No internal symbols read? Skip this BFD. */
3421 if (isymbuf
== NULL
)
3424 for (i
= 0; i
< localsyms
; i
++)
3426 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
3427 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3431 && ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
3433 name
= bfd_elf_string_from_elf_section (abfd
,
3434 hdr
->sh_link
, isym
->st_name
);
3436 if (bfd_is_arm_special_symbol_name (name
,
3437 BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
3438 elf32_arm_section_map_add (sec
, name
[1], isym
->st_value
);
3445 bfd_elf32_arm_set_vfp11_fix (bfd
*obfd
, struct bfd_link_info
*link_info
)
3447 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
3448 obj_attribute
*out_attr
= elf_known_obj_attributes_proc (obfd
);
3450 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
3451 if (out_attr
[Tag_CPU_arch
].i
>= TAG_CPU_ARCH_V7
)
3453 switch (globals
->vfp11_fix
)
3455 case BFD_ARM_VFP11_FIX_DEFAULT
:
3456 case BFD_ARM_VFP11_FIX_NONE
:
3457 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
3461 /* Give a warning, but do as the user requests anyway. */
3462 (*_bfd_error_handler
) (_("%B: warning: selected VFP11 erratum "
3463 "workaround is not necessary for target architecture"), obfd
);
3466 else if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_DEFAULT
)
3467 /* For earlier architectures, we might need the workaround, but do not
3468 enable it by default. If users is running with broken hardware, they
3469 must enable the erratum fix explicitly. */
3470 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
3474 enum bfd_arm_vfp11_pipe
{
3481 /* Return a VFP register number. This is encoded as RX:X for single-precision
3482 registers, or X:RX for double-precision registers, where RX is the group of
3483 four bits in the instruction encoding and X is the single extension bit.
3484 RX and X fields are specified using their lowest (starting) bit. The return
3487 0...31: single-precision registers s0...s31
3488 32...63: double-precision registers d0...d31.
3490 Although X should be zero for VFP11 (encoding d0...d15 only), we might
3491 encounter VFP3 instructions, so we allow the full range for DP registers. */
3494 bfd_arm_vfp11_regno (unsigned int insn
, bfd_boolean is_double
, unsigned int rx
,
3498 return (((insn
>> rx
) & 0xf) | (((insn
>> x
) & 1) << 4)) + 32;
3500 return (((insn
>> rx
) & 0xf) << 1) | ((insn
>> x
) & 1);
3503 /* Set bits in *WMASK according to a register number REG as encoded by
3504 bfd_arm_vfp11_regno(). Ignore d16-d31. */
3507 bfd_arm_vfp11_write_mask (unsigned int *wmask
, unsigned int reg
)
3512 *wmask
|= 3 << ((reg
- 32) * 2);
3515 /* Return TRUE if WMASK overwrites anything in REGS. */
3518 bfd_arm_vfp11_antidependency (unsigned int wmask
, int *regs
, int numregs
)
3522 for (i
= 0; i
< numregs
; i
++)
3524 unsigned int reg
= regs
[i
];
3526 if (reg
< 32 && (wmask
& (1 << reg
)) != 0)
3534 if ((wmask
& (3 << (reg
* 2))) != 0)
3541 /* In this function, we're interested in two things: finding input registers
3542 for VFP data-processing instructions, and finding the set of registers which
3543 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
3544 hold the written set, so FLDM etc. are easy to deal with (we're only
3545 interested in 32 SP registers or 16 dp registers, due to the VFP version
3546 implemented by the chip in question). DP registers are marked by setting
3547 both SP registers in the write mask). */
3549 static enum bfd_arm_vfp11_pipe
3550 bfd_arm_vfp11_insn_decode (unsigned int insn
, unsigned int *destmask
, int *regs
,
3553 enum bfd_arm_vfp11_pipe pipe
= VFP11_BAD
;
3554 bfd_boolean is_double
= ((insn
& 0xf00) == 0xb00) ? 1 : 0;
3556 if ((insn
& 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
3559 unsigned int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
3560 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
3562 pqrs
= ((insn
& 0x00800000) >> 20)
3563 | ((insn
& 0x00300000) >> 19)
3564 | ((insn
& 0x00000040) >> 6);
3568 case 0: /* fmac[sd]. */
3569 case 1: /* fnmac[sd]. */
3570 case 2: /* fmsc[sd]. */
3571 case 3: /* fnmsc[sd]. */
3573 bfd_arm_vfp11_write_mask (destmask
, fd
);
3575 regs
[1] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
3580 case 4: /* fmul[sd]. */
3581 case 5: /* fnmul[sd]. */
3582 case 6: /* fadd[sd]. */
3583 case 7: /* fsub[sd]. */
3587 case 8: /* fdiv[sd]. */
3590 bfd_arm_vfp11_write_mask (destmask
, fd
);
3591 regs
[0] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
3596 case 15: /* extended opcode. */
3598 unsigned int extn
= ((insn
>> 15) & 0x1e)
3599 | ((insn
>> 7) & 1);
3603 case 0: /* fcpy[sd]. */
3604 case 1: /* fabs[sd]. */
3605 case 2: /* fneg[sd]. */
3606 case 8: /* fcmp[sd]. */
3607 case 9: /* fcmpe[sd]. */
3608 case 10: /* fcmpz[sd]. */
3609 case 11: /* fcmpez[sd]. */
3610 case 16: /* fuito[sd]. */
3611 case 17: /* fsito[sd]. */
3612 case 24: /* ftoui[sd]. */
3613 case 25: /* ftouiz[sd]. */
3614 case 26: /* ftosi[sd]. */
3615 case 27: /* ftosiz[sd]. */
3616 /* These instructions will not bounce due to underflow. */
3621 case 3: /* fsqrt[sd]. */
3622 /* fsqrt cannot underflow, but it can (perhaps) overwrite
3623 registers to cause the erratum in previous instructions. */
3624 bfd_arm_vfp11_write_mask (destmask
, fd
);
3628 case 15: /* fcvt{ds,sd}. */
3632 bfd_arm_vfp11_write_mask (destmask
, fd
);
3634 /* Only FCVTSD can underflow. */
3635 if ((insn
& 0x100) != 0)
3654 /* Two-register transfer. */
3655 else if ((insn
& 0x0fe00ed0) == 0x0c400a10)
3657 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
3659 if ((insn
& 0x100000) == 0)
3662 bfd_arm_vfp11_write_mask (destmask
, fm
);
3665 bfd_arm_vfp11_write_mask (destmask
, fm
);
3666 bfd_arm_vfp11_write_mask (destmask
, fm
+ 1);
3672 else if ((insn
& 0x0e100e00) == 0x0c100a00) /* A load insn. */
3674 int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
3675 unsigned int puw
= ((insn
>> 21) & 0x1) | (((insn
>> 23) & 3) << 1);
3679 case 0: /* Two-reg transfer. We should catch these above. */
3682 case 2: /* fldm[sdx]. */
3686 unsigned int i
, offset
= insn
& 0xff;
3691 for (i
= fd
; i
< fd
+ offset
; i
++)
3692 bfd_arm_vfp11_write_mask (destmask
, i
);
3696 case 4: /* fld[sd]. */
3698 bfd_arm_vfp11_write_mask (destmask
, fd
);
3707 /* Single-register transfer. Note L==0. */
3708 else if ((insn
& 0x0f100e10) == 0x0e000a10)
3710 unsigned int opcode
= (insn
>> 21) & 7;
3711 unsigned int fn
= bfd_arm_vfp11_regno (insn
, is_double
, 16, 7);
3715 case 0: /* fmsr/fmdlr. */
3716 case 1: /* fmdhr. */
3717 /* Mark fmdhr and fmdlr as writing to the whole of the DP
3718 destination register. I don't know if this is exactly right,
3719 but it is the conservative choice. */
3720 bfd_arm_vfp11_write_mask (destmask
, fn
);
3734 static int elf32_arm_compare_mapping (const void * a
, const void * b
);
3737 /* Look for potentially-troublesome code sequences which might trigger the
3738 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
3739 (available from ARM) for details of the erratum. A short version is
3740 described in ld.texinfo. */
3743 bfd_elf32_arm_vfp11_erratum_scan (bfd
*abfd
, struct bfd_link_info
*link_info
)
3746 bfd_byte
*contents
= NULL
;
3748 int regs
[3], numregs
= 0;
3749 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
3750 int use_vector
= (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_VECTOR
);
3752 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
3753 The states transition as follows:
3755 0 -> 1 (vector) or 0 -> 2 (scalar)
3756 A VFP FMAC-pipeline instruction has been seen. Fill
3757 regs[0]..regs[numregs-1] with its input operands. Remember this
3758 instruction in 'first_fmac'.
3761 Any instruction, except for a VFP instruction which overwrites
3766 A VFP instruction has been seen which overwrites any of regs[*].
3767 We must make a veneer! Reset state to 0 before examining next
3771 If we fail to match anything in state 2, reset to state 0 and reset
3772 the instruction pointer to the instruction after 'first_fmac'.
3774 If the VFP11 vector mode is in use, there must be at least two unrelated
3775 instructions between anti-dependent VFP11 instructions to properly avoid
3776 triggering the erratum, hence the use of the extra state 1.
3779 /* If we are only performing a partial link do not bother
3780 to construct any glue. */
3781 if (link_info
->relocatable
)
3784 /* Skip if this bfd does not correspond to an ELF image. */
3785 if (! is_arm_elf (abfd
))
3788 /* We should have chosen a fix type by the time we get here. */
3789 BFD_ASSERT (globals
->vfp11_fix
!= BFD_ARM_VFP11_FIX_DEFAULT
);
3791 if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_NONE
)
3794 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3796 unsigned int i
, span
, first_fmac
= 0, veneer_of_insn
= 0;
3797 struct _arm_elf_section_data
*sec_data
;
3799 /* If we don't have executable progbits, we're not interested in this
3800 section. Also skip if section is to be excluded. */
3801 if (elf_section_type (sec
) != SHT_PROGBITS
3802 || (elf_section_flags (sec
) & SHF_EXECINSTR
) == 0
3803 || (sec
->flags
& SEC_EXCLUDE
) != 0
3804 || strcmp (sec
->name
, VFP11_ERRATUM_VENEER_SECTION_NAME
) == 0)
3807 sec_data
= elf32_arm_section_data (sec
);
3809 if (sec_data
->mapcount
== 0)
3812 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
3813 contents
= elf_section_data (sec
)->this_hdr
.contents
;
3814 else if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
3817 qsort (sec_data
->map
, sec_data
->mapcount
, sizeof (elf32_arm_section_map
),
3818 elf32_arm_compare_mapping
);
3820 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3822 unsigned int span_start
= sec_data
->map
[span
].vma
;
3823 unsigned int span_end
= (span
== sec_data
->mapcount
- 1)
3824 ? sec
->size
: sec_data
->map
[span
+ 1].vma
;
3825 char span_type
= sec_data
->map
[span
].type
;
3827 /* FIXME: Only ARM mode is supported at present. We may need to
3828 support Thumb-2 mode also at some point. */
3829 if (span_type
!= 'a')
3832 for (i
= span_start
; i
< span_end
;)
3834 unsigned int next_i
= i
+ 4;
3835 unsigned int insn
= bfd_big_endian (abfd
)
3836 ? (contents
[i
] << 24)
3837 | (contents
[i
+ 1] << 16)
3838 | (contents
[i
+ 2] << 8)
3840 : (contents
[i
+ 3] << 24)
3841 | (contents
[i
+ 2] << 16)
3842 | (contents
[i
+ 1] << 8)
3844 unsigned int writemask
= 0;
3845 enum bfd_arm_vfp11_pipe pipe
;
3850 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
, regs
,
3852 /* I'm assuming the VFP11 erratum can trigger with denorm
3853 operands on either the FMAC or the DS pipeline. This might
3854 lead to slightly overenthusiastic veneer insertion. */
3855 if (pipe
== VFP11_FMAC
|| pipe
== VFP11_DS
)
3857 state
= use_vector
? 1 : 2;
3859 veneer_of_insn
= insn
;
3865 int other_regs
[3], other_numregs
;
3866 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
3869 if (pipe
!= VFP11_BAD
3870 && bfd_arm_vfp11_antidependency (writemask
, regs
,
3880 int other_regs
[3], other_numregs
;
3881 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
3884 if (pipe
!= VFP11_BAD
3885 && bfd_arm_vfp11_antidependency (writemask
, regs
,
3891 next_i
= first_fmac
+ 4;
3897 abort (); /* Should be unreachable. */
3902 elf32_vfp11_erratum_list
*newerr
3903 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
3906 errcount
= ++(elf32_arm_section_data (sec
)->erratumcount
);
3908 newerr
->u
.b
.vfp_insn
= veneer_of_insn
;
3913 newerr
->type
= VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
;
3920 record_vfp11_erratum_veneer (link_info
, newerr
, abfd
, sec
,
3925 newerr
->next
= sec_data
->erratumlist
;
3926 sec_data
->erratumlist
= newerr
;
3935 if (contents
!= NULL
3936 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3944 if (contents
!= NULL
3945 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3951 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
3952 after sections have been laid out, using specially-named symbols. */
3955 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd
*abfd
,
3956 struct bfd_link_info
*link_info
)
3959 struct elf32_arm_link_hash_table
*globals
;
3962 if (link_info
->relocatable
)
3965 /* Skip if this bfd does not correspond to an ELF image. */
3966 if (! is_arm_elf (abfd
))
3969 globals
= elf32_arm_hash_table (link_info
);
3971 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
3972 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
3974 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3976 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
3977 elf32_vfp11_erratum_list
*errnode
= sec_data
->erratumlist
;
3979 for (; errnode
!= NULL
; errnode
= errnode
->next
)
3981 struct elf_link_hash_entry
*myh
;
3984 switch (errnode
->type
)
3986 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
3987 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
:
3988 /* Find veneer symbol. */
3989 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
3990 errnode
->u
.b
.veneer
->u
.v
.id
);
3992 myh
= elf_link_hash_lookup
3993 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3996 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
3997 "`%s'"), abfd
, tmp_name
);
3999 vma
= myh
->root
.u
.def
.section
->output_section
->vma
4000 + myh
->root
.u
.def
.section
->output_offset
4001 + myh
->root
.u
.def
.value
;
4003 errnode
->u
.b
.veneer
->vma
= vma
;
4006 case VFP11_ERRATUM_ARM_VENEER
:
4007 case VFP11_ERRATUM_THUMB_VENEER
:
4008 /* Find return location. */
4009 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
4012 myh
= elf_link_hash_lookup
4013 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
4016 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
4017 "`%s'"), abfd
, tmp_name
);
4019 vma
= myh
->root
.u
.def
.section
->output_section
->vma
4020 + myh
->root
.u
.def
.section
->output_offset
4021 + myh
->root
.u
.def
.value
;
4023 errnode
->u
.v
.branch
->vma
= vma
;
4036 /* Set target relocation values needed during linking. */
4039 bfd_elf32_arm_set_target_relocs (struct bfd
*output_bfd
,
4040 struct bfd_link_info
*link_info
,
4042 char * target2_type
,
4045 bfd_arm_vfp11_fix vfp11_fix
,
4046 int no_enum_warn
, int pic_veneer
)
4048 struct elf32_arm_link_hash_table
*globals
;
4050 globals
= elf32_arm_hash_table (link_info
);
4052 globals
->target1_is_rel
= target1_is_rel
;
4053 if (strcmp (target2_type
, "rel") == 0)
4054 globals
->target2_reloc
= R_ARM_REL32
;
4055 else if (strcmp (target2_type
, "abs") == 0)
4056 globals
->target2_reloc
= R_ARM_ABS32
;
4057 else if (strcmp (target2_type
, "got-rel") == 0)
4058 globals
->target2_reloc
= R_ARM_GOT_PREL
;
4061 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
4064 globals
->fix_v4bx
= fix_v4bx
;
4065 globals
->use_blx
|= use_blx
;
4066 globals
->vfp11_fix
= vfp11_fix
;
4067 globals
->pic_veneer
= pic_veneer
;
4069 BFD_ASSERT (is_arm_elf (output_bfd
));
4070 elf_arm_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
4073 /* Replace the target offset of a Thumb bl or b.w instruction. */
4076 insert_thumb_branch (bfd
*abfd
, long int offset
, bfd_byte
*insn
)
4082 BFD_ASSERT ((offset
& 1) == 0);
4084 upper
= bfd_get_16 (abfd
, insn
);
4085 lower
= bfd_get_16 (abfd
, insn
+ 2);
4086 reloc_sign
= (offset
< 0) ? 1 : 0;
4087 upper
= (upper
& ~(bfd_vma
) 0x7ff)
4088 | ((offset
>> 12) & 0x3ff)
4089 | (reloc_sign
<< 10);
4090 lower
= (lower
& ~(bfd_vma
) 0x2fff)
4091 | (((!((offset
>> 23) & 1)) ^ reloc_sign
) << 13)
4092 | (((!((offset
>> 22) & 1)) ^ reloc_sign
) << 11)
4093 | ((offset
>> 1) & 0x7ff);
4094 bfd_put_16 (abfd
, upper
, insn
);
4095 bfd_put_16 (abfd
, lower
, insn
+ 2);
4099 /* Store an Arm insn into an output section not processed by
4100 elf32_arm_write_section. */
4103 put_arm_insn (struct elf32_arm_link_hash_table
*htab
,
4104 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
4106 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
4107 bfd_putl32 (val
, ptr
);
4109 bfd_putb32 (val
, ptr
);
4113 /* Store a 16-bit Thumb insn into an output section not processed by
4114 elf32_arm_write_section. */
4117 put_thumb_insn (struct elf32_arm_link_hash_table
*htab
,
4118 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
4120 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
4121 bfd_putl16 (val
, ptr
);
4123 bfd_putb16 (val
, ptr
);
4127 /* Thumb code calling an ARM function. */
4130 elf32_thumb_to_arm_stub (struct bfd_link_info
* info
,
4134 asection
* input_section
,
4135 bfd_byte
* hit_data
,
4138 bfd_signed_vma addend
,
4140 char **error_message
)
4144 long int ret_offset
;
4145 struct elf_link_hash_entry
* myh
;
4146 struct elf32_arm_link_hash_table
* globals
;
4148 myh
= find_thumb_glue (info
, name
, error_message
);
4152 globals
= elf32_arm_hash_table (info
);
4154 BFD_ASSERT (globals
!= NULL
);
4155 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4157 my_offset
= myh
->root
.u
.def
.value
;
4159 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4160 THUMB2ARM_GLUE_SECTION_NAME
);
4162 BFD_ASSERT (s
!= NULL
);
4163 BFD_ASSERT (s
->contents
!= NULL
);
4164 BFD_ASSERT (s
->output_section
!= NULL
);
4166 if ((my_offset
& 0x01) == 0x01)
4169 && sym_sec
->owner
!= NULL
4170 && !INTERWORK_FLAG (sym_sec
->owner
))
4172 (*_bfd_error_handler
)
4173 (_("%B(%s): warning: interworking not enabled.\n"
4174 " first occurrence: %B: thumb call to arm"),
4175 sym_sec
->owner
, input_bfd
, name
);
4181 myh
->root
.u
.def
.value
= my_offset
;
4183 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a1_bx_pc_insn
,
4184 s
->contents
+ my_offset
);
4186 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a2_noop_insn
,
4187 s
->contents
+ my_offset
+ 2);
4190 /* Address of destination of the stub. */
4191 ((bfd_signed_vma
) val
)
4193 /* Offset from the start of the current section
4194 to the start of the stubs. */
4196 /* Offset of the start of this stub from the start of the stubs. */
4198 /* Address of the start of the current section. */
4199 + s
->output_section
->vma
)
4200 /* The branch instruction is 4 bytes into the stub. */
4202 /* ARM branches work from the pc of the instruction + 8. */
4205 put_arm_insn (globals
, output_bfd
,
4206 (bfd_vma
) t2a3_b_insn
| ((ret_offset
>> 2) & 0x00FFFFFF),
4207 s
->contents
+ my_offset
+ 4);
4210 BFD_ASSERT (my_offset
<= globals
->thumb_glue_size
);
4212 /* Now go back and fix up the original BL insn to point to here. */
4214 /* Address of where the stub is located. */
4215 (s
->output_section
->vma
+ s
->output_offset
+ my_offset
)
4216 /* Address of where the BL is located. */
4217 - (input_section
->output_section
->vma
+ input_section
->output_offset
4219 /* Addend in the relocation. */
4221 /* Biassing for PC-relative addressing. */
4224 insert_thumb_branch (input_bfd
, ret_offset
, hit_data
- input_section
->vma
);
4229 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
4231 static struct elf_link_hash_entry
*
4232 elf32_arm_create_thumb_stub (struct bfd_link_info
* info
,
4239 char **error_message
)
4242 long int ret_offset
;
4243 struct elf_link_hash_entry
* myh
;
4244 struct elf32_arm_link_hash_table
* globals
;
4246 myh
= find_arm_glue (info
, name
, error_message
);
4250 globals
= elf32_arm_hash_table (info
);
4252 BFD_ASSERT (globals
!= NULL
);
4253 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4255 my_offset
= myh
->root
.u
.def
.value
;
4257 if ((my_offset
& 0x01) == 0x01)
4260 && sym_sec
->owner
!= NULL
4261 && !INTERWORK_FLAG (sym_sec
->owner
))
4263 (*_bfd_error_handler
)
4264 (_("%B(%s): warning: interworking not enabled.\n"
4265 " first occurrence: %B: arm call to thumb"),
4266 sym_sec
->owner
, input_bfd
, name
);
4270 myh
->root
.u
.def
.value
= my_offset
;
4272 if (info
->shared
|| globals
->root
.is_relocatable_executable
4273 || globals
->pic_veneer
)
4275 /* For relocatable objects we can't use absolute addresses,
4276 so construct the address from a relative offset. */
4277 /* TODO: If the offset is small it's probably worth
4278 constructing the address with adds. */
4279 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1p_ldr_insn
,
4280 s
->contents
+ my_offset
);
4281 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2p_add_pc_insn
,
4282 s
->contents
+ my_offset
+ 4);
4283 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t3p_bx_r12_insn
,
4284 s
->contents
+ my_offset
+ 8);
4285 /* Adjust the offset by 4 for the position of the add,
4286 and 8 for the pipeline offset. */
4287 ret_offset
= (val
- (s
->output_offset
4288 + s
->output_section
->vma
4291 bfd_put_32 (output_bfd
, ret_offset
,
4292 s
->contents
+ my_offset
+ 12);
4294 else if (globals
->use_blx
)
4296 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1v5_ldr_insn
,
4297 s
->contents
+ my_offset
);
4299 /* It's a thumb address. Add the low order bit. */
4300 bfd_put_32 (output_bfd
, val
| a2t2v5_func_addr_insn
,
4301 s
->contents
+ my_offset
+ 4);
4305 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1_ldr_insn
,
4306 s
->contents
+ my_offset
);
4308 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2_bx_r12_insn
,
4309 s
->contents
+ my_offset
+ 4);
4311 /* It's a thumb address. Add the low order bit. */
4312 bfd_put_32 (output_bfd
, val
| a2t3_func_addr_insn
,
4313 s
->contents
+ my_offset
+ 8);
4317 BFD_ASSERT (my_offset
<= globals
->arm_glue_size
);
4322 /* Arm code calling a Thumb function. */
4325 elf32_arm_to_thumb_stub (struct bfd_link_info
* info
,
4329 asection
* input_section
,
4330 bfd_byte
* hit_data
,
4333 bfd_signed_vma addend
,
4335 char **error_message
)
4337 unsigned long int tmp
;
4340 long int ret_offset
;
4341 struct elf_link_hash_entry
* myh
;
4342 struct elf32_arm_link_hash_table
* globals
;
4344 globals
= elf32_arm_hash_table (info
);
4346 BFD_ASSERT (globals
!= NULL
);
4347 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4349 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4350 ARM2THUMB_GLUE_SECTION_NAME
);
4351 BFD_ASSERT (s
!= NULL
);
4352 BFD_ASSERT (s
->contents
!= NULL
);
4353 BFD_ASSERT (s
->output_section
!= NULL
);
4355 myh
= elf32_arm_create_thumb_stub (info
, name
, input_bfd
, output_bfd
,
4356 sym_sec
, val
, s
, error_message
);
4360 my_offset
= myh
->root
.u
.def
.value
;
4361 tmp
= bfd_get_32 (input_bfd
, hit_data
);
4362 tmp
= tmp
& 0xFF000000;
4364 /* Somehow these are both 4 too far, so subtract 8. */
4365 ret_offset
= (s
->output_offset
4367 + s
->output_section
->vma
4368 - (input_section
->output_offset
4369 + input_section
->output_section
->vma
4373 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
4375 bfd_put_32 (output_bfd
, (bfd_vma
) tmp
, hit_data
- input_section
->vma
);
4380 /* Populate Arm stub for an exported Thumb function. */
4383 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry
*h
, void * inf
)
4385 struct bfd_link_info
* info
= (struct bfd_link_info
*) inf
;
4387 struct elf_link_hash_entry
* myh
;
4388 struct elf32_arm_link_hash_entry
*eh
;
4389 struct elf32_arm_link_hash_table
* globals
;
4392 char *error_message
;
4394 eh
= elf32_arm_hash_entry(h
);
4395 /* Allocate stubs for exported Thumb functions on v4t. */
4396 if (eh
->export_glue
== NULL
)
4399 globals
= elf32_arm_hash_table (info
);
4401 BFD_ASSERT (globals
!= NULL
);
4402 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4404 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4405 ARM2THUMB_GLUE_SECTION_NAME
);
4406 BFD_ASSERT (s
!= NULL
);
4407 BFD_ASSERT (s
->contents
!= NULL
);
4408 BFD_ASSERT (s
->output_section
!= NULL
);
4410 sec
= eh
->export_glue
->root
.u
.def
.section
;
4412 BFD_ASSERT (sec
->output_section
!= NULL
);
4414 val
= eh
->export_glue
->root
.u
.def
.value
+ sec
->output_offset
4415 + sec
->output_section
->vma
;
4416 myh
= elf32_arm_create_thumb_stub (info
, h
->root
.root
.string
,
4417 h
->root
.u
.def
.section
->owner
,
4418 globals
->obfd
, sec
, val
, s
,
4424 /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
4427 elf32_arm_bx_glue (struct bfd_link_info
* info
, int reg
)
4432 struct elf32_arm_link_hash_table
*globals
;
4434 globals
= elf32_arm_hash_table (info
);
4436 BFD_ASSERT (globals
!= NULL
);
4437 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4439 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4440 ARM_BX_GLUE_SECTION_NAME
);
4441 BFD_ASSERT (s
!= NULL
);
4442 BFD_ASSERT (s
->contents
!= NULL
);
4443 BFD_ASSERT (s
->output_section
!= NULL
);
4445 BFD_ASSERT (globals
->bx_glue_offset
[reg
] & 2);
4447 glue_addr
= globals
->bx_glue_offset
[reg
] & ~(bfd_vma
)3;
4449 if ((globals
->bx_glue_offset
[reg
] & 1) == 0)
4451 p
= s
->contents
+ glue_addr
;
4452 bfd_put_32 (globals
->obfd
, armbx1_tst_insn
+ (reg
<< 16), p
);
4453 bfd_put_32 (globals
->obfd
, armbx2_moveq_insn
+ reg
, p
+ 4);
4454 bfd_put_32 (globals
->obfd
, armbx3_bx_insn
+ reg
, p
+ 8);
4455 globals
->bx_glue_offset
[reg
] |= 1;
4458 return glue_addr
+ s
->output_section
->vma
+ s
->output_offset
;
4461 /* Generate Arm stubs for exported Thumb symbols. */
4463 elf32_arm_begin_write_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
4464 struct bfd_link_info
*link_info
)
4466 struct elf32_arm_link_hash_table
* globals
;
4471 globals
= elf32_arm_hash_table (link_info
);
4472 /* If blx is available then exported Thumb symbols are OK and there is
4474 if (globals
->use_blx
)
4477 elf_link_hash_traverse (&globals
->root
, elf32_arm_to_thumb_export_stub
,
4481 /* Some relocations map to different relocations depending on the
4482 target. Return the real relocation. */
4484 arm_real_reloc_type (struct elf32_arm_link_hash_table
* globals
,
4490 if (globals
->target1_is_rel
)
4496 return globals
->target2_reloc
;
4503 /* Return the base VMA address which should be subtracted from real addresses
4504 when resolving @dtpoff relocation.
4505 This is PT_TLS segment p_vaddr. */
4508 dtpoff_base (struct bfd_link_info
*info
)
4510 /* If tls_sec is NULL, we should have signalled an error already. */
4511 if (elf_hash_table (info
)->tls_sec
== NULL
)
4513 return elf_hash_table (info
)->tls_sec
->vma
;
4516 /* Return the relocation value for @tpoff relocation
4517 if STT_TLS virtual address is ADDRESS. */
4520 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
4522 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4525 /* If tls_sec is NULL, we should have signalled an error already. */
4526 if (htab
->tls_sec
== NULL
)
4528 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
4529 return address
- htab
->tls_sec
->vma
+ base
;
4532 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
4533 VALUE is the relocation value. */
4535 static bfd_reloc_status_type
4536 elf32_arm_abs12_reloc (bfd
*abfd
, void *data
, bfd_vma value
)
4539 return bfd_reloc_overflow
;
4541 value
|= bfd_get_32 (abfd
, data
) & 0xfffff000;
4542 bfd_put_32 (abfd
, value
, data
);
4543 return bfd_reloc_ok
;
4546 /* For a given value of n, calculate the value of G_n as required to
4547 deal with group relocations. We return it in the form of an
4548 encoded constant-and-rotation, together with the final residual. If n is
4549 specified as less than zero, then final_residual is filled with the
4550 input value and no further action is performed. */
4553 calculate_group_reloc_mask (bfd_vma value
, int n
, bfd_vma
*final_residual
)
4557 bfd_vma encoded_g_n
= 0;
4558 bfd_vma residual
= value
; /* Also known as Y_n. */
4560 for (current_n
= 0; current_n
<= n
; current_n
++)
4564 /* Calculate which part of the value to mask. */
4571 /* Determine the most significant bit in the residual and
4572 align the resulting value to a 2-bit boundary. */
4573 for (msb
= 30; msb
>= 0; msb
-= 2)
4574 if (residual
& (3 << msb
))
4577 /* The desired shift is now (msb - 6), or zero, whichever
4584 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
4585 g_n
= residual
& (0xff << shift
);
4586 encoded_g_n
= (g_n
>> shift
)
4587 | ((g_n
<= 0xff ? 0 : (32 - shift
) / 2) << 8);
4589 /* Calculate the residual for the next time around. */
4593 *final_residual
= residual
;
4598 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
4599 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
4601 identify_add_or_sub(bfd_vma insn
)
4603 int opcode
= insn
& 0x1e00000;
4605 if (opcode
== 1 << 23) /* ADD */
4608 if (opcode
== 1 << 22) /* SUB */
4614 /* Determine if we're dealing with a Thumb-2 object. */
4616 static int using_thumb2 (struct elf32_arm_link_hash_table
*globals
)
4618 int arch
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
4620 return arch
== TAG_CPU_ARCH_V6T2
|| arch
>= TAG_CPU_ARCH_V7
;
4623 /* Perform a relocation as part of a final link. */
4625 static bfd_reloc_status_type
4626 elf32_arm_final_link_relocate (reloc_howto_type
* howto
,
4629 asection
* input_section
,
4630 bfd_byte
* contents
,
4631 Elf_Internal_Rela
* rel
,
4633 struct bfd_link_info
* info
,
4635 const char * sym_name
,
4637 struct elf_link_hash_entry
* h
,
4638 bfd_boolean
* unresolved_reloc_p
,
4639 char **error_message
)
4641 unsigned long r_type
= howto
->type
;
4642 unsigned long r_symndx
;
4643 bfd_byte
* hit_data
= contents
+ rel
->r_offset
;
4644 bfd
* dynobj
= NULL
;
4645 Elf_Internal_Shdr
* symtab_hdr
;
4646 struct elf_link_hash_entry
** sym_hashes
;
4647 bfd_vma
* local_got_offsets
;
4648 asection
* sgot
= NULL
;
4649 asection
* splt
= NULL
;
4650 asection
* sreloc
= NULL
;
4652 bfd_signed_vma signed_addend
;
4653 struct elf32_arm_link_hash_table
* globals
;
4655 globals
= elf32_arm_hash_table (info
);
4657 BFD_ASSERT (is_arm_elf (input_bfd
));
4659 /* Some relocation types map to different relocations depending on the
4660 target. We pick the right one here. */
4661 r_type
= arm_real_reloc_type (globals
, r_type
);
4662 if (r_type
!= howto
->type
)
4663 howto
= elf32_arm_howto_from_type (r_type
);
4665 /* If the start address has been set, then set the EF_ARM_HASENTRY
4666 flag. Setting this more than once is redundant, but the cost is
4667 not too high, and it keeps the code simple.
4669 The test is done here, rather than somewhere else, because the
4670 start address is only set just before the final link commences.
4672 Note - if the user deliberately sets a start address of 0, the
4673 flag will not be set. */
4674 if (bfd_get_start_address (output_bfd
) != 0)
4675 elf_elfheader (output_bfd
)->e_flags
|= EF_ARM_HASENTRY
;
4677 dynobj
= elf_hash_table (info
)->dynobj
;
4680 sgot
= bfd_get_section_by_name (dynobj
, ".got");
4681 splt
= bfd_get_section_by_name (dynobj
, ".plt");
4683 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
4684 sym_hashes
= elf_sym_hashes (input_bfd
);
4685 local_got_offsets
= elf_local_got_offsets (input_bfd
);
4686 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4688 if (globals
->use_rel
)
4690 addend
= bfd_get_32 (input_bfd
, hit_data
) & howto
->src_mask
;
4692 if (addend
& ((howto
->src_mask
+ 1) >> 1))
4695 signed_addend
&= ~ howto
->src_mask
;
4696 signed_addend
|= addend
;
4699 signed_addend
= addend
;
4702 addend
= signed_addend
= rel
->r_addend
;
4707 /* We don't need to find a value for this symbol. It's just a
4709 *unresolved_reloc_p
= FALSE
;
4710 return bfd_reloc_ok
;
4713 if (!globals
->vxworks_p
)
4714 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
4718 case R_ARM_ABS32_NOI
:
4720 case R_ARM_REL32_NOI
:
4726 /* Handle relocations which should use the PLT entry. ABS32/REL32
4727 will use the symbol's value, which may point to a PLT entry, but we
4728 don't need to handle that here. If we created a PLT entry, all
4729 branches in this object should go to it. */
4730 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
4731 && r_type
!= R_ARM_ABS32_NOI
&& r_type
!= R_ARM_REL32_NOI
)
4734 && h
->plt
.offset
!= (bfd_vma
) -1)
4736 /* If we've created a .plt section, and assigned a PLT entry to
4737 this function, it should not be known to bind locally. If
4738 it were, we would have cleared the PLT entry. */
4739 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
4741 value
= (splt
->output_section
->vma
4742 + splt
->output_offset
4744 *unresolved_reloc_p
= FALSE
;
4745 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4746 contents
, rel
->r_offset
, value
,
4750 /* When generating a shared object or relocatable executable, these
4751 relocations are copied into the output file to be resolved at
4753 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
4754 && (input_section
->flags
& SEC_ALLOC
)
4755 && ((r_type
!= R_ARM_REL32
&& r_type
!= R_ARM_REL32_NOI
)
4756 || !SYMBOL_CALLS_LOCAL (info
, h
))
4758 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4759 || h
->root
.type
!= bfd_link_hash_undefweak
)
4760 && r_type
!= R_ARM_PC24
4761 && r_type
!= R_ARM_CALL
4762 && r_type
!= R_ARM_JUMP24
4763 && r_type
!= R_ARM_PREL31
4764 && r_type
!= R_ARM_PLT32
)
4766 Elf_Internal_Rela outrel
;
4768 bfd_boolean skip
, relocate
;
4770 *unresolved_reloc_p
= FALSE
;
4776 name
= (bfd_elf_string_from_elf_section
4778 elf_elfheader (input_bfd
)->e_shstrndx
,
4779 elf_section_data (input_section
)->rel_hdr
.sh_name
));
4781 return bfd_reloc_notsupported
;
4783 BFD_ASSERT (reloc_section_p (globals
, name
, input_section
));
4785 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4786 BFD_ASSERT (sreloc
!= NULL
);
4792 outrel
.r_addend
= addend
;
4794 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
4796 if (outrel
.r_offset
== (bfd_vma
) -1)
4798 else if (outrel
.r_offset
== (bfd_vma
) -2)
4799 skip
= TRUE
, relocate
= TRUE
;
4800 outrel
.r_offset
+= (input_section
->output_section
->vma
4801 + input_section
->output_offset
);
4804 memset (&outrel
, 0, sizeof outrel
);
4809 || !h
->def_regular
))
4810 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
4815 /* This symbol is local, or marked to become local. */
4816 if (sym_flags
== STT_ARM_TFUNC
)
4818 if (globals
->symbian_p
)
4822 /* On Symbian OS, the data segment and text segement
4823 can be relocated independently. Therefore, we
4824 must indicate the segment to which this
4825 relocation is relative. The BPABI allows us to
4826 use any symbol in the right segment; we just use
4827 the section symbol as it is convenient. (We
4828 cannot use the symbol given by "h" directly as it
4829 will not appear in the dynamic symbol table.)
4831 Note that the dynamic linker ignores the section
4832 symbol value, so we don't subtract osec->vma
4833 from the emitted reloc addend. */
4835 osec
= sym_sec
->output_section
;
4837 osec
= input_section
->output_section
;
4838 symbol
= elf_section_data (osec
)->dynindx
;
4841 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4843 if ((osec
->flags
& SEC_READONLY
) == 0
4844 && htab
->data_index_section
!= NULL
)
4845 osec
= htab
->data_index_section
;
4847 osec
= htab
->text_index_section
;
4848 symbol
= elf_section_data (osec
)->dynindx
;
4850 BFD_ASSERT (symbol
!= 0);
4853 /* On SVR4-ish systems, the dynamic loader cannot
4854 relocate the text and data segments independently,
4855 so the symbol does not matter. */
4857 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
4858 if (globals
->use_rel
)
4861 outrel
.r_addend
+= value
;
4864 loc
= sreloc
->contents
;
4865 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
4866 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4868 /* If this reloc is against an external symbol, we do not want to
4869 fiddle with the addend. Otherwise, we need to include the symbol
4870 value so that it becomes an addend for the dynamic reloc. */
4872 return bfd_reloc_ok
;
4874 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4875 contents
, rel
->r_offset
, value
,
4878 else switch (r_type
)
4881 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
4883 case R_ARM_XPC25
: /* Arm BLX instruction. */
4886 case R_ARM_PC24
: /* Arm B/BL instruction */
4888 if (r_type
== R_ARM_XPC25
)
4890 /* Check for Arm calling Arm function. */
4891 /* FIXME: Should we translate the instruction into a BL
4892 instruction instead ? */
4893 if (sym_flags
!= STT_ARM_TFUNC
)
4894 (*_bfd_error_handler
)
4895 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
4897 h
? h
->root
.root
.string
: "(local)");
4899 else if (r_type
!= R_ARM_CALL
|| !globals
->use_blx
)
4901 /* Check for Arm calling Thumb function. */
4902 if (sym_flags
== STT_ARM_TFUNC
)
4904 if (elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
4905 output_bfd
, input_section
,
4906 hit_data
, sym_sec
, rel
->r_offset
,
4907 signed_addend
, value
,
4909 return bfd_reloc_ok
;
4911 return bfd_reloc_dangerous
;
4915 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
4917 S is the address of the symbol in the relocation.
4918 P is address of the instruction being relocated.
4919 A is the addend (extracted from the instruction) in bytes.
4921 S is held in 'value'.
4922 P is the base address of the section containing the
4923 instruction plus the offset of the reloc into that
4925 (input_section->output_section->vma +
4926 input_section->output_offset +
4928 A is the addend, converted into bytes, ie:
4931 Note: None of these operations have knowledge of the pipeline
4932 size of the processor, thus it is up to the assembler to
4933 encode this information into the addend. */
4934 value
-= (input_section
->output_section
->vma
4935 + input_section
->output_offset
);
4936 value
-= rel
->r_offset
;
4937 if (globals
->use_rel
)
4938 value
+= (signed_addend
<< howto
->size
);
4940 /* RELA addends do not have to be adjusted by howto->size. */
4941 value
+= signed_addend
;
4943 signed_addend
= value
;
4944 signed_addend
>>= howto
->rightshift
;
4946 /* A branch to an undefined weak symbol is turned into a jump to
4947 the next instruction. */
4948 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
4950 value
= (bfd_get_32 (input_bfd
, hit_data
) & 0xf0000000)
4955 /* Perform a signed range check. */
4956 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
4957 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
4958 return bfd_reloc_overflow
;
4960 addend
= (value
& 2);
4962 value
= (signed_addend
& howto
->dst_mask
)
4963 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
4965 /* Set the H bit in the BLX instruction. */
4966 if (sym_flags
== STT_ARM_TFUNC
)
4971 value
&= ~(bfd_vma
)(1 << 24);
4973 if (r_type
== R_ARM_CALL
)
4975 /* Select the correct instruction (BL or BLX). */
4976 if (sym_flags
== STT_ARM_TFUNC
)
4980 value
&= ~(bfd_vma
)(1 << 28);
4989 if (sym_flags
== STT_ARM_TFUNC
)
4993 case R_ARM_ABS32_NOI
:
4999 if (sym_flags
== STT_ARM_TFUNC
)
5001 value
-= (input_section
->output_section
->vma
5002 + input_section
->output_offset
+ rel
->r_offset
);
5005 case R_ARM_REL32_NOI
:
5007 value
-= (input_section
->output_section
->vma
5008 + input_section
->output_offset
+ rel
->r_offset
);
5012 value
-= (input_section
->output_section
->vma
5013 + input_section
->output_offset
+ rel
->r_offset
);
5014 value
+= signed_addend
;
5015 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
5017 /* Check for overflow */
5018 if ((value
^ (value
>> 1)) & (1 << 30))
5019 return bfd_reloc_overflow
;
5021 value
&= 0x7fffffff;
5022 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
5023 if (sym_flags
== STT_ARM_TFUNC
)
5028 bfd_put_32 (input_bfd
, value
, hit_data
);
5029 return bfd_reloc_ok
;
5033 if ((long) value
> 0x7f || (long) value
< -0x80)
5034 return bfd_reloc_overflow
;
5036 bfd_put_8 (input_bfd
, value
, hit_data
);
5037 return bfd_reloc_ok
;
5042 if ((long) value
> 0x7fff || (long) value
< -0x8000)
5043 return bfd_reloc_overflow
;
5045 bfd_put_16 (input_bfd
, value
, hit_data
);
5046 return bfd_reloc_ok
;
5048 case R_ARM_THM_ABS5
:
5049 /* Support ldr and str instructions for the thumb. */
5050 if (globals
->use_rel
)
5052 /* Need to refetch addend. */
5053 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
5054 /* ??? Need to determine shift amount from operand size. */
5055 addend
>>= howto
->rightshift
;
5059 /* ??? Isn't value unsigned? */
5060 if ((long) value
> 0x1f || (long) value
< -0x10)
5061 return bfd_reloc_overflow
;
5063 /* ??? Value needs to be properly shifted into place first. */
5064 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
5065 bfd_put_16 (input_bfd
, value
, hit_data
);
5066 return bfd_reloc_ok
;
5068 case R_ARM_THM_ALU_PREL_11_0
:
5069 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
5072 bfd_signed_vma relocation
;
5074 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
5075 | bfd_get_16 (input_bfd
, hit_data
+ 2);
5077 if (globals
->use_rel
)
5079 signed_addend
= (insn
& 0xff) | ((insn
& 0x7000) >> 4)
5080 | ((insn
& (1 << 26)) >> 15);
5081 if (insn
& 0xf00000)
5082 signed_addend
= -signed_addend
;
5085 relocation
= value
+ signed_addend
;
5086 relocation
-= (input_section
->output_section
->vma
5087 + input_section
->output_offset
5090 value
= abs (relocation
);
5092 if (value
>= 0x1000)
5093 return bfd_reloc_overflow
;
5095 insn
= (insn
& 0xfb0f8f00) | (value
& 0xff)
5096 | ((value
& 0x700) << 4)
5097 | ((value
& 0x800) << 15);
5101 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
5102 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
5104 return bfd_reloc_ok
;
5107 case R_ARM_THM_PC12
:
5108 /* Corresponds to: ldr.w reg, [pc, #offset]. */
5111 bfd_signed_vma relocation
;
5113 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
5114 | bfd_get_16 (input_bfd
, hit_data
+ 2);
5116 if (globals
->use_rel
)
5118 signed_addend
= insn
& 0xfff;
5119 if (!(insn
& (1 << 23)))
5120 signed_addend
= -signed_addend
;
5123 relocation
= value
+ signed_addend
;
5124 relocation
-= (input_section
->output_section
->vma
5125 + input_section
->output_offset
5128 value
= abs (relocation
);
5130 if (value
>= 0x1000)
5131 return bfd_reloc_overflow
;
5133 insn
= (insn
& 0xff7ff000) | value
;
5134 if (relocation
>= 0)
5137 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
5138 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
5140 return bfd_reloc_ok
;
5143 case R_ARM_THM_XPC22
:
5144 case R_ARM_THM_CALL
:
5145 case R_ARM_THM_JUMP24
:
5146 /* Thumb BL (branch long instruction). */
5150 bfd_boolean overflow
= FALSE
;
5151 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
5152 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
5153 bfd_signed_vma reloc_signed_max
;
5154 bfd_signed_vma reloc_signed_min
;
5156 bfd_signed_vma signed_check
;
5158 int thumb2
= using_thumb2 (globals
);
5160 /* A branch to an undefined weak symbol is turned into a jump to
5161 the next instruction. */
5162 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
5164 bfd_put_16 (input_bfd
, 0xe000, hit_data
);
5165 bfd_put_16 (input_bfd
, 0xbf00, hit_data
+ 2);
5166 return bfd_reloc_ok
;
5169 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
5170 with Thumb-1) involving the J1 and J2 bits. */
5171 if (globals
->use_rel
)
5173 bfd_vma s
= (upper_insn
& (1 << 10)) >> 10;
5174 bfd_vma upper
= upper_insn
& 0x3ff;
5175 bfd_vma lower
= lower_insn
& 0x7ff;
5176 bfd_vma j1
= (lower_insn
& (1 << 13)) >> 13;
5177 bfd_vma j2
= (lower_insn
& (1 << 11)) >> 11;
5178 bfd_vma i1
= j1
^ s
? 0 : 1;
5179 bfd_vma i2
= j2
^ s
? 0 : 1;
5181 addend
= (i1
<< 23) | (i2
<< 22) | (upper
<< 12) | (lower
<< 1);
5183 addend
= (addend
| ((s
? 0 : 1) << 24)) - (1 << 24);
5185 signed_addend
= addend
;
5188 if (r_type
== R_ARM_THM_XPC22
)
5190 /* Check for Thumb to Thumb call. */
5191 /* FIXME: Should we translate the instruction into a BL
5192 instruction instead ? */
5193 if (sym_flags
== STT_ARM_TFUNC
)
5194 (*_bfd_error_handler
)
5195 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
5197 h
? h
->root
.root
.string
: "(local)");
5201 /* If it is not a call to Thumb, assume call to Arm.
5202 If it is a call relative to a section name, then it is not a
5203 function call at all, but rather a long jump. Calls through
5204 the PLT do not require stubs. */
5205 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
5206 && (h
== NULL
|| splt
== NULL
5207 || h
->plt
.offset
== (bfd_vma
) -1))
5209 if (globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
5211 /* Convert BL to BLX. */
5212 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
5214 else if (elf32_thumb_to_arm_stub
5215 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
5216 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
,
5218 return bfd_reloc_ok
;
5220 return bfd_reloc_dangerous
;
5222 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
5223 && r_type
== R_ARM_THM_CALL
)
5225 /* Make sure this is a BL. */
5226 lower_insn
|= 0x1800;
5230 /* Handle calls via the PLT. */
5231 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
5233 value
= (splt
->output_section
->vma
5234 + splt
->output_offset
5236 if (globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
5238 /* If the Thumb BLX instruction is available, convert the
5239 BL to a BLX instruction to call the ARM-mode PLT entry. */
5240 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
5243 /* Target the Thumb stub before the ARM PLT entry. */
5244 value
-= PLT_THUMB_STUB_SIZE
;
5245 *unresolved_reloc_p
= FALSE
;
5248 relocation
= value
+ signed_addend
;
5250 relocation
-= (input_section
->output_section
->vma
5251 + input_section
->output_offset
5254 check
= relocation
>> howto
->rightshift
;
5256 /* If this is a signed value, the rightshift just dropped
5257 leading 1 bits (assuming twos complement). */
5258 if ((bfd_signed_vma
) relocation
>= 0)
5259 signed_check
= check
;
5261 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
5263 /* Calculate the permissable maximum and minimum values for
5264 this relocation according to whether we're relocating for
5266 bitsize
= howto
->bitsize
;
5269 reloc_signed_max
= ((1 << (bitsize
- 1)) - 1) >> howto
->rightshift
;
5270 reloc_signed_min
= ~reloc_signed_max
;
5272 /* Assumes two's complement. */
5273 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5276 if ((lower_insn
& 0x5000) == 0x4000)
5277 /* For a BLX instruction, make sure that the relocation is rounded up
5278 to a word boundary. This follows the semantics of the instruction
5279 which specifies that bit 1 of the target address will come from bit
5280 1 of the base address. */
5281 relocation
= (relocation
+ 2) & ~ 3;
5283 /* Put RELOCATION back into the insn. Assumes two's complement.
5284 We use the Thumb-2 encoding, which is safe even if dealing with
5285 a Thumb-1 instruction by virtue of our overflow check above. */
5286 reloc_sign
= (signed_check
< 0) ? 1 : 0;
5287 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff)
5288 | ((relocation
>> 12) & 0x3ff)
5289 | (reloc_sign
<< 10);
5290 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x2fff)
5291 | (((!((relocation
>> 23) & 1)) ^ reloc_sign
) << 13)
5292 | (((!((relocation
>> 22) & 1)) ^ reloc_sign
) << 11)
5293 | ((relocation
>> 1) & 0x7ff);
5295 /* Put the relocated value back in the object file: */
5296 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5297 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5299 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5303 case R_ARM_THM_JUMP19
:
5304 /* Thumb32 conditional branch instruction. */
5307 bfd_boolean overflow
= FALSE
;
5308 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
5309 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
5310 bfd_signed_vma reloc_signed_max
= 0xffffe;
5311 bfd_signed_vma reloc_signed_min
= -0x100000;
5312 bfd_signed_vma signed_check
;
5314 /* Need to refetch the addend, reconstruct the top three bits,
5315 and squish the two 11 bit pieces together. */
5316 if (globals
->use_rel
)
5318 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
5319 bfd_vma upper
= (upper_insn
& 0x003f);
5320 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
5321 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
5322 bfd_vma lower
= (lower_insn
& 0x07ff);
5327 upper
-= 0x0100; /* Sign extend. */
5329 addend
= (upper
<< 12) | (lower
<< 1);
5330 signed_addend
= addend
;
5333 /* Handle calls via the PLT. */
5334 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
5336 value
= (splt
->output_section
->vma
5337 + splt
->output_offset
5339 /* Target the Thumb stub before the ARM PLT entry. */
5340 value
-= PLT_THUMB_STUB_SIZE
;
5341 *unresolved_reloc_p
= FALSE
;
5344 /* ??? Should handle interworking? GCC might someday try to
5345 use this for tail calls. */
5347 relocation
= value
+ signed_addend
;
5348 relocation
-= (input_section
->output_section
->vma
5349 + input_section
->output_offset
5351 signed_check
= (bfd_signed_vma
) relocation
;
5353 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5356 /* Put RELOCATION back into the insn. */
5358 bfd_vma S
= (relocation
& 0x00100000) >> 20;
5359 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
5360 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
5361 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
5362 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
5364 upper_insn
= (upper_insn
& 0xfbc0) | (S
<< 10) | hi
;
5365 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
5368 /* Put the relocated value back in the object file: */
5369 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5370 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5372 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5375 case R_ARM_THM_JUMP11
:
5376 case R_ARM_THM_JUMP8
:
5377 case R_ARM_THM_JUMP6
:
5378 /* Thumb B (branch) instruction). */
5380 bfd_signed_vma relocation
;
5381 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
5382 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
5383 bfd_signed_vma signed_check
;
5385 /* CZB cannot jump backward. */
5386 if (r_type
== R_ARM_THM_JUMP6
)
5387 reloc_signed_min
= 0;
5389 if (globals
->use_rel
)
5391 /* Need to refetch addend. */
5392 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
5393 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5396 signed_addend
&= ~ howto
->src_mask
;
5397 signed_addend
|= addend
;
5400 signed_addend
= addend
;
5401 /* The value in the insn has been right shifted. We need to
5402 undo this, so that we can perform the address calculation
5403 in terms of bytes. */
5404 signed_addend
<<= howto
->rightshift
;
5406 relocation
= value
+ signed_addend
;
5408 relocation
-= (input_section
->output_section
->vma
5409 + input_section
->output_offset
5412 relocation
>>= howto
->rightshift
;
5413 signed_check
= relocation
;
5415 if (r_type
== R_ARM_THM_JUMP6
)
5416 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
5418 relocation
&= howto
->dst_mask
;
5419 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
5421 bfd_put_16 (input_bfd
, relocation
, hit_data
);
5423 /* Assumes two's complement. */
5424 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5425 return bfd_reloc_overflow
;
5427 return bfd_reloc_ok
;
5430 case R_ARM_ALU_PCREL7_0
:
5431 case R_ARM_ALU_PCREL15_8
:
5432 case R_ARM_ALU_PCREL23_15
:
5437 insn
= bfd_get_32 (input_bfd
, hit_data
);
5438 if (globals
->use_rel
)
5440 /* Extract the addend. */
5441 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
5442 signed_addend
= addend
;
5444 relocation
= value
+ signed_addend
;
5446 relocation
-= (input_section
->output_section
->vma
5447 + input_section
->output_offset
5449 insn
= (insn
& ~0xfff)
5450 | ((howto
->bitpos
<< 7) & 0xf00)
5451 | ((relocation
>> howto
->bitpos
) & 0xff);
5452 bfd_put_32 (input_bfd
, value
, hit_data
);
5454 return bfd_reloc_ok
;
5456 case R_ARM_GNU_VTINHERIT
:
5457 case R_ARM_GNU_VTENTRY
:
5458 return bfd_reloc_ok
;
5460 case R_ARM_GOTOFF32
:
5461 /* Relocation is relative to the start of the
5462 global offset table. */
5464 BFD_ASSERT (sgot
!= NULL
);
5466 return bfd_reloc_notsupported
;
5468 /* If we are addressing a Thumb function, we need to adjust the
5469 address by one, so that attempts to call the function pointer will
5470 correctly interpret it as Thumb code. */
5471 if (sym_flags
== STT_ARM_TFUNC
)
5474 /* Note that sgot->output_offset is not involved in this
5475 calculation. We always want the start of .got. If we
5476 define _GLOBAL_OFFSET_TABLE in a different way, as is
5477 permitted by the ABI, we might have to change this
5479 value
-= sgot
->output_section
->vma
;
5480 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5481 contents
, rel
->r_offset
, value
,
5485 /* Use global offset table as symbol value. */
5486 BFD_ASSERT (sgot
!= NULL
);
5489 return bfd_reloc_notsupported
;
5491 *unresolved_reloc_p
= FALSE
;
5492 value
= sgot
->output_section
->vma
;
5493 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5494 contents
, rel
->r_offset
, value
,
5498 case R_ARM_GOT_PREL
:
5499 /* Relocation is to the entry for this symbol in the
5500 global offset table. */
5502 return bfd_reloc_notsupported
;
5509 off
= h
->got
.offset
;
5510 BFD_ASSERT (off
!= (bfd_vma
) -1);
5511 dyn
= globals
->root
.dynamic_sections_created
;
5513 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
5515 && SYMBOL_REFERENCES_LOCAL (info
, h
))
5516 || (ELF_ST_VISIBILITY (h
->other
)
5517 && h
->root
.type
== bfd_link_hash_undefweak
))
5519 /* This is actually a static link, or it is a -Bsymbolic link
5520 and the symbol is defined locally. We must initialize this
5521 entry in the global offset table. Since the offset must
5522 always be a multiple of 4, we use the least significant bit
5523 to record whether we have initialized it already.
5525 When doing a dynamic link, we create a .rel(a).got relocation
5526 entry to initialize the value. This is done in the
5527 finish_dynamic_symbol routine. */
5532 /* If we are addressing a Thumb function, we need to
5533 adjust the address by one, so that attempts to
5534 call the function pointer will correctly
5535 interpret it as Thumb code. */
5536 if (sym_flags
== STT_ARM_TFUNC
)
5539 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
5544 *unresolved_reloc_p
= FALSE
;
5546 value
= sgot
->output_offset
+ off
;
5552 BFD_ASSERT (local_got_offsets
!= NULL
&&
5553 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
5555 off
= local_got_offsets
[r_symndx
];
5557 /* The offset must always be a multiple of 4. We use the
5558 least significant bit to record whether we have already
5559 generated the necessary reloc. */
5564 /* If we are addressing a Thumb function, we need to
5565 adjust the address by one, so that attempts to
5566 call the function pointer will correctly
5567 interpret it as Thumb code. */
5568 if (sym_flags
== STT_ARM_TFUNC
)
5571 if (globals
->use_rel
)
5572 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
5577 Elf_Internal_Rela outrel
;
5580 srelgot
= (bfd_get_section_by_name
5581 (dynobj
, RELOC_SECTION (globals
, ".got")));
5582 BFD_ASSERT (srelgot
!= NULL
);
5584 outrel
.r_addend
= addend
+ value
;
5585 outrel
.r_offset
= (sgot
->output_section
->vma
5586 + sgot
->output_offset
5588 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
5589 loc
= srelgot
->contents
;
5590 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
5591 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5594 local_got_offsets
[r_symndx
] |= 1;
5597 value
= sgot
->output_offset
+ off
;
5599 if (r_type
!= R_ARM_GOT32
)
5600 value
+= sgot
->output_section
->vma
;
5602 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5603 contents
, rel
->r_offset
, value
,
5606 case R_ARM_TLS_LDO32
:
5607 value
= value
- dtpoff_base (info
);
5609 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5610 contents
, rel
->r_offset
, value
,
5613 case R_ARM_TLS_LDM32
:
5617 if (globals
->sgot
== NULL
)
5620 off
= globals
->tls_ldm_got
.offset
;
5626 /* If we don't know the module number, create a relocation
5630 Elf_Internal_Rela outrel
;
5633 if (globals
->srelgot
== NULL
)
5636 outrel
.r_addend
= 0;
5637 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5638 + globals
->sgot
->output_offset
+ off
);
5639 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
5641 if (globals
->use_rel
)
5642 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5643 globals
->sgot
->contents
+ off
);
5645 loc
= globals
->srelgot
->contents
;
5646 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
5647 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5650 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
5652 globals
->tls_ldm_got
.offset
|= 1;
5655 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
5656 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
5658 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5659 contents
, rel
->r_offset
, value
,
5663 case R_ARM_TLS_GD32
:
5664 case R_ARM_TLS_IE32
:
5670 if (globals
->sgot
== NULL
)
5677 dyn
= globals
->root
.dynamic_sections_created
;
5678 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
5680 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
5682 *unresolved_reloc_p
= FALSE
;
5685 off
= h
->got
.offset
;
5686 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
5690 if (local_got_offsets
== NULL
)
5692 off
= local_got_offsets
[r_symndx
];
5693 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
5696 if (tls_type
== GOT_UNKNOWN
)
5703 bfd_boolean need_relocs
= FALSE
;
5704 Elf_Internal_Rela outrel
;
5705 bfd_byte
*loc
= NULL
;
5708 /* The GOT entries have not been initialized yet. Do it
5709 now, and emit any relocations. If both an IE GOT and a
5710 GD GOT are necessary, we emit the GD first. */
5712 if ((info
->shared
|| indx
!= 0)
5714 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5715 || h
->root
.type
!= bfd_link_hash_undefweak
))
5718 if (globals
->srelgot
== NULL
)
5720 loc
= globals
->srelgot
->contents
;
5721 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
5724 if (tls_type
& GOT_TLS_GD
)
5728 outrel
.r_addend
= 0;
5729 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5730 + globals
->sgot
->output_offset
5732 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
5734 if (globals
->use_rel
)
5735 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5736 globals
->sgot
->contents
+ cur_off
);
5738 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5739 globals
->srelgot
->reloc_count
++;
5740 loc
+= RELOC_SIZE (globals
);
5743 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
5744 globals
->sgot
->contents
+ cur_off
+ 4);
5747 outrel
.r_addend
= 0;
5748 outrel
.r_info
= ELF32_R_INFO (indx
,
5749 R_ARM_TLS_DTPOFF32
);
5750 outrel
.r_offset
+= 4;
5752 if (globals
->use_rel
)
5753 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5754 globals
->sgot
->contents
+ cur_off
+ 4);
5757 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5758 globals
->srelgot
->reloc_count
++;
5759 loc
+= RELOC_SIZE (globals
);
5764 /* If we are not emitting relocations for a
5765 general dynamic reference, then we must be in a
5766 static link or an executable link with the
5767 symbol binding locally. Mark it as belonging
5768 to module 1, the executable. */
5769 bfd_put_32 (output_bfd
, 1,
5770 globals
->sgot
->contents
+ cur_off
);
5771 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
5772 globals
->sgot
->contents
+ cur_off
+ 4);
5778 if (tls_type
& GOT_TLS_IE
)
5783 outrel
.r_addend
= value
- dtpoff_base (info
);
5785 outrel
.r_addend
= 0;
5786 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5787 + globals
->sgot
->output_offset
5789 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
5791 if (globals
->use_rel
)
5792 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5793 globals
->sgot
->contents
+ cur_off
);
5795 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5796 globals
->srelgot
->reloc_count
++;
5797 loc
+= RELOC_SIZE (globals
);
5800 bfd_put_32 (output_bfd
, tpoff (info
, value
),
5801 globals
->sgot
->contents
+ cur_off
);
5808 local_got_offsets
[r_symndx
] |= 1;
5811 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
5813 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
5814 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
5816 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5817 contents
, rel
->r_offset
, value
,
5821 case R_ARM_TLS_LE32
:
5824 (*_bfd_error_handler
)
5825 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
5826 input_bfd
, input_section
,
5827 (long) rel
->r_offset
, howto
->name
);
5831 value
= tpoff (info
, value
);
5833 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5834 contents
, rel
->r_offset
, value
,
5838 if (globals
->fix_v4bx
)
5840 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5842 /* Ensure that we have a BX instruction. */
5843 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
5845 if (globals
->fix_v4bx
== 2 && (insn
& 0xf) != 0xf)
5847 /* Branch to veneer. */
5849 glue_addr
= elf32_arm_bx_glue (info
, insn
& 0xf);
5850 glue_addr
-= input_section
->output_section
->vma
5851 + input_section
->output_offset
5852 + rel
->r_offset
+ 8;
5853 insn
= (insn
& 0xf0000000) | 0x0a000000
5854 | ((glue_addr
>> 2) & 0x00ffffff);
5858 /* Preserve Rm (lowest four bits) and the condition code
5859 (highest four bits). Other bits encode MOV PC,Rm. */
5860 insn
= (insn
& 0xf000000f) | 0x01a0f000;
5863 bfd_put_32 (input_bfd
, insn
, hit_data
);
5865 return bfd_reloc_ok
;
5867 case R_ARM_MOVW_ABS_NC
:
5868 case R_ARM_MOVT_ABS
:
5869 case R_ARM_MOVW_PREL_NC
:
5870 case R_ARM_MOVT_PREL
:
5871 /* Until we properly support segment-base-relative addressing then
5872 we assume the segment base to be zero, as for the group relocations.
5873 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
5874 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
5875 case R_ARM_MOVW_BREL_NC
:
5876 case R_ARM_MOVW_BREL
:
5877 case R_ARM_MOVT_BREL
:
5879 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5881 if (globals
->use_rel
)
5883 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
5884 signed_addend
= (addend
^ 0x8000) - 0x8000;
5887 value
+= signed_addend
;
5889 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
5890 value
-= (input_section
->output_section
->vma
5891 + input_section
->output_offset
+ rel
->r_offset
);
5893 if (r_type
== R_ARM_MOVW_BREL
&& value
>= 0x10000)
5894 return bfd_reloc_overflow
;
5896 if (sym_flags
== STT_ARM_TFUNC
)
5899 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
5900 || r_type
== R_ARM_MOVT_BREL
)
5904 insn
|= value
& 0xfff;
5905 insn
|= (value
& 0xf000) << 4;
5906 bfd_put_32 (input_bfd
, insn
, hit_data
);
5908 return bfd_reloc_ok
;
5910 case R_ARM_THM_MOVW_ABS_NC
:
5911 case R_ARM_THM_MOVT_ABS
:
5912 case R_ARM_THM_MOVW_PREL_NC
:
5913 case R_ARM_THM_MOVT_PREL
:
5914 /* Until we properly support segment-base-relative addressing then
5915 we assume the segment base to be zero, as for the above relocations.
5916 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
5917 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
5918 as R_ARM_THM_MOVT_ABS. */
5919 case R_ARM_THM_MOVW_BREL_NC
:
5920 case R_ARM_THM_MOVW_BREL
:
5921 case R_ARM_THM_MOVT_BREL
:
5925 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
5926 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
5928 if (globals
->use_rel
)
5930 addend
= ((insn
>> 4) & 0xf000)
5931 | ((insn
>> 15) & 0x0800)
5932 | ((insn
>> 4) & 0x0700)
5934 signed_addend
= (addend
^ 0x8000) - 0x8000;
5937 value
+= signed_addend
;
5939 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
5940 value
-= (input_section
->output_section
->vma
5941 + input_section
->output_offset
+ rel
->r_offset
);
5943 if (r_type
== R_ARM_THM_MOVW_BREL
&& value
>= 0x10000)
5944 return bfd_reloc_overflow
;
5946 if (sym_flags
== STT_ARM_TFUNC
)
5949 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
5950 || r_type
== R_ARM_THM_MOVT_BREL
)
5954 insn
|= (value
& 0xf000) << 4;
5955 insn
|= (value
& 0x0800) << 15;
5956 insn
|= (value
& 0x0700) << 4;
5957 insn
|= (value
& 0x00ff);
5959 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
5960 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
5962 return bfd_reloc_ok
;
5964 case R_ARM_ALU_PC_G0_NC
:
5965 case R_ARM_ALU_PC_G1_NC
:
5966 case R_ARM_ALU_PC_G0
:
5967 case R_ARM_ALU_PC_G1
:
5968 case R_ARM_ALU_PC_G2
:
5969 case R_ARM_ALU_SB_G0_NC
:
5970 case R_ARM_ALU_SB_G1_NC
:
5971 case R_ARM_ALU_SB_G0
:
5972 case R_ARM_ALU_SB_G1
:
5973 case R_ARM_ALU_SB_G2
:
5975 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5976 bfd_vma pc
= input_section
->output_section
->vma
5977 + input_section
->output_offset
+ rel
->r_offset
;
5978 /* sb should be the origin of the *segment* containing the symbol.
5979 It is not clear how to obtain this OS-dependent value, so we
5980 make an arbitrary choice of zero. */
5984 bfd_signed_vma signed_value
;
5987 /* Determine which group of bits to select. */
5990 case R_ARM_ALU_PC_G0_NC
:
5991 case R_ARM_ALU_PC_G0
:
5992 case R_ARM_ALU_SB_G0_NC
:
5993 case R_ARM_ALU_SB_G0
:
5997 case R_ARM_ALU_PC_G1_NC
:
5998 case R_ARM_ALU_PC_G1
:
5999 case R_ARM_ALU_SB_G1_NC
:
6000 case R_ARM_ALU_SB_G1
:
6004 case R_ARM_ALU_PC_G2
:
6005 case R_ARM_ALU_SB_G2
:
6013 /* If REL, extract the addend from the insn. If RELA, it will
6014 have already been fetched for us. */
6015 if (globals
->use_rel
)
6018 bfd_vma constant
= insn
& 0xff;
6019 bfd_vma rotation
= (insn
& 0xf00) >> 8;
6022 signed_addend
= constant
;
6025 /* Compensate for the fact that in the instruction, the
6026 rotation is stored in multiples of 2 bits. */
6029 /* Rotate "constant" right by "rotation" bits. */
6030 signed_addend
= (constant
>> rotation
) |
6031 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
6034 /* Determine if the instruction is an ADD or a SUB.
6035 (For REL, this determines the sign of the addend.) */
6036 negative
= identify_add_or_sub (insn
);
6039 (*_bfd_error_handler
)
6040 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
6041 input_bfd
, input_section
,
6042 (long) rel
->r_offset
, howto
->name
);
6043 return bfd_reloc_overflow
;
6046 signed_addend
*= negative
;
6049 /* Compute the value (X) to go in the place. */
6050 if (r_type
== R_ARM_ALU_PC_G0_NC
6051 || r_type
== R_ARM_ALU_PC_G1_NC
6052 || r_type
== R_ARM_ALU_PC_G0
6053 || r_type
== R_ARM_ALU_PC_G1
6054 || r_type
== R_ARM_ALU_PC_G2
)
6056 signed_value
= value
- pc
+ signed_addend
;
6058 /* Section base relative. */
6059 signed_value
= value
- sb
+ signed_addend
;
6061 /* If the target symbol is a Thumb function, then set the
6062 Thumb bit in the address. */
6063 if (sym_flags
== STT_ARM_TFUNC
)
6066 /* Calculate the value of the relevant G_n, in encoded
6067 constant-with-rotation format. */
6068 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
6071 /* Check for overflow if required. */
6072 if ((r_type
== R_ARM_ALU_PC_G0
6073 || r_type
== R_ARM_ALU_PC_G1
6074 || r_type
== R_ARM_ALU_PC_G2
6075 || r_type
== R_ARM_ALU_SB_G0
6076 || r_type
== R_ARM_ALU_SB_G1
6077 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
6079 (*_bfd_error_handler
)
6080 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6081 input_bfd
, input_section
,
6082 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6083 return bfd_reloc_overflow
;
6086 /* Mask out the value and the ADD/SUB part of the opcode; take care
6087 not to destroy the S bit. */
6090 /* Set the opcode according to whether the value to go in the
6091 place is negative. */
6092 if (signed_value
< 0)
6097 /* Encode the offset. */
6100 bfd_put_32 (input_bfd
, insn
, hit_data
);
6102 return bfd_reloc_ok
;
6104 case R_ARM_LDR_PC_G0
:
6105 case R_ARM_LDR_PC_G1
:
6106 case R_ARM_LDR_PC_G2
:
6107 case R_ARM_LDR_SB_G0
:
6108 case R_ARM_LDR_SB_G1
:
6109 case R_ARM_LDR_SB_G2
:
6111 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6112 bfd_vma pc
= input_section
->output_section
->vma
6113 + input_section
->output_offset
+ rel
->r_offset
;
6114 bfd_vma sb
= 0; /* See note above. */
6116 bfd_signed_vma signed_value
;
6119 /* Determine which groups of bits to calculate. */
6122 case R_ARM_LDR_PC_G0
:
6123 case R_ARM_LDR_SB_G0
:
6127 case R_ARM_LDR_PC_G1
:
6128 case R_ARM_LDR_SB_G1
:
6132 case R_ARM_LDR_PC_G2
:
6133 case R_ARM_LDR_SB_G2
:
6141 /* If REL, extract the addend from the insn. If RELA, it will
6142 have already been fetched for us. */
6143 if (globals
->use_rel
)
6145 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6146 signed_addend
= negative
* (insn
& 0xfff);
6149 /* Compute the value (X) to go in the place. */
6150 if (r_type
== R_ARM_LDR_PC_G0
6151 || r_type
== R_ARM_LDR_PC_G1
6152 || r_type
== R_ARM_LDR_PC_G2
)
6154 signed_value
= value
- pc
+ signed_addend
;
6156 /* Section base relative. */
6157 signed_value
= value
- sb
+ signed_addend
;
6159 /* Calculate the value of the relevant G_{n-1} to obtain
6160 the residual at that stage. */
6161 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6163 /* Check for overflow. */
6164 if (residual
>= 0x1000)
6166 (*_bfd_error_handler
)
6167 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6168 input_bfd
, input_section
,
6169 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6170 return bfd_reloc_overflow
;
6173 /* Mask out the value and U bit. */
6176 /* Set the U bit if the value to go in the place is non-negative. */
6177 if (signed_value
>= 0)
6180 /* Encode the offset. */
6183 bfd_put_32 (input_bfd
, insn
, hit_data
);
6185 return bfd_reloc_ok
;
6187 case R_ARM_LDRS_PC_G0
:
6188 case R_ARM_LDRS_PC_G1
:
6189 case R_ARM_LDRS_PC_G2
:
6190 case R_ARM_LDRS_SB_G0
:
6191 case R_ARM_LDRS_SB_G1
:
6192 case R_ARM_LDRS_SB_G2
:
6194 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6195 bfd_vma pc
= input_section
->output_section
->vma
6196 + input_section
->output_offset
+ rel
->r_offset
;
6197 bfd_vma sb
= 0; /* See note above. */
6199 bfd_signed_vma signed_value
;
6202 /* Determine which groups of bits to calculate. */
6205 case R_ARM_LDRS_PC_G0
:
6206 case R_ARM_LDRS_SB_G0
:
6210 case R_ARM_LDRS_PC_G1
:
6211 case R_ARM_LDRS_SB_G1
:
6215 case R_ARM_LDRS_PC_G2
:
6216 case R_ARM_LDRS_SB_G2
:
6224 /* If REL, extract the addend from the insn. If RELA, it will
6225 have already been fetched for us. */
6226 if (globals
->use_rel
)
6228 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6229 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
6232 /* Compute the value (X) to go in the place. */
6233 if (r_type
== R_ARM_LDRS_PC_G0
6234 || r_type
== R_ARM_LDRS_PC_G1
6235 || r_type
== R_ARM_LDRS_PC_G2
)
6237 signed_value
= value
- pc
+ signed_addend
;
6239 /* Section base relative. */
6240 signed_value
= value
- sb
+ signed_addend
;
6242 /* Calculate the value of the relevant G_{n-1} to obtain
6243 the residual at that stage. */
6244 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6246 /* Check for overflow. */
6247 if (residual
>= 0x100)
6249 (*_bfd_error_handler
)
6250 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6251 input_bfd
, input_section
,
6252 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6253 return bfd_reloc_overflow
;
6256 /* Mask out the value and U bit. */
6259 /* Set the U bit if the value to go in the place is non-negative. */
6260 if (signed_value
>= 0)
6263 /* Encode the offset. */
6264 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
6266 bfd_put_32 (input_bfd
, insn
, hit_data
);
6268 return bfd_reloc_ok
;
6270 case R_ARM_LDC_PC_G0
:
6271 case R_ARM_LDC_PC_G1
:
6272 case R_ARM_LDC_PC_G2
:
6273 case R_ARM_LDC_SB_G0
:
6274 case R_ARM_LDC_SB_G1
:
6275 case R_ARM_LDC_SB_G2
:
6277 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6278 bfd_vma pc
= input_section
->output_section
->vma
6279 + input_section
->output_offset
+ rel
->r_offset
;
6280 bfd_vma sb
= 0; /* See note above. */
6282 bfd_signed_vma signed_value
;
6285 /* Determine which groups of bits to calculate. */
6288 case R_ARM_LDC_PC_G0
:
6289 case R_ARM_LDC_SB_G0
:
6293 case R_ARM_LDC_PC_G1
:
6294 case R_ARM_LDC_SB_G1
:
6298 case R_ARM_LDC_PC_G2
:
6299 case R_ARM_LDC_SB_G2
:
6307 /* If REL, extract the addend from the insn. If RELA, it will
6308 have already been fetched for us. */
6309 if (globals
->use_rel
)
6311 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6312 signed_addend
= negative
* ((insn
& 0xff) << 2);
6315 /* Compute the value (X) to go in the place. */
6316 if (r_type
== R_ARM_LDC_PC_G0
6317 || r_type
== R_ARM_LDC_PC_G1
6318 || r_type
== R_ARM_LDC_PC_G2
)
6320 signed_value
= value
- pc
+ signed_addend
;
6322 /* Section base relative. */
6323 signed_value
= value
- sb
+ signed_addend
;
6325 /* Calculate the value of the relevant G_{n-1} to obtain
6326 the residual at that stage. */
6327 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6329 /* Check for overflow. (The absolute value to go in the place must be
6330 divisible by four and, after having been divided by four, must
6331 fit in eight bits.) */
6332 if ((residual
& 0x3) != 0 || residual
>= 0x400)
6334 (*_bfd_error_handler
)
6335 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6336 input_bfd
, input_section
,
6337 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6338 return bfd_reloc_overflow
;
6341 /* Mask out the value and U bit. */
6344 /* Set the U bit if the value to go in the place is non-negative. */
6345 if (signed_value
>= 0)
6348 /* Encode the offset. */
6349 insn
|= residual
>> 2;
6351 bfd_put_32 (input_bfd
, insn
, hit_data
);
6353 return bfd_reloc_ok
;
6356 return bfd_reloc_notsupported
;
6360 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
6362 arm_add_to_rel (bfd
* abfd
,
6364 reloc_howto_type
* howto
,
6365 bfd_signed_vma increment
)
6367 bfd_signed_vma addend
;
6369 if (howto
->type
== R_ARM_THM_CALL
6370 || howto
->type
== R_ARM_THM_JUMP24
)
6372 int upper_insn
, lower_insn
;
6375 upper_insn
= bfd_get_16 (abfd
, address
);
6376 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
6377 upper
= upper_insn
& 0x7ff;
6378 lower
= lower_insn
& 0x7ff;
6380 addend
= (upper
<< 12) | (lower
<< 1);
6381 addend
+= increment
;
6384 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
6385 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
6387 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
6388 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
6394 contents
= bfd_get_32 (abfd
, address
);
6396 /* Get the (signed) value from the instruction. */
6397 addend
= contents
& howto
->src_mask
;
6398 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6400 bfd_signed_vma mask
;
6403 mask
&= ~ howto
->src_mask
;
6407 /* Add in the increment, (which is a byte value). */
6408 switch (howto
->type
)
6411 addend
+= increment
;
6418 addend
<<= howto
->size
;
6419 addend
+= increment
;
6421 /* Should we check for overflow here ? */
6423 /* Drop any undesired bits. */
6424 addend
>>= howto
->rightshift
;
6428 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
6430 bfd_put_32 (abfd
, contents
, address
);
6434 #define IS_ARM_TLS_RELOC(R_TYPE) \
6435 ((R_TYPE) == R_ARM_TLS_GD32 \
6436 || (R_TYPE) == R_ARM_TLS_LDO32 \
6437 || (R_TYPE) == R_ARM_TLS_LDM32 \
6438 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
6439 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
6440 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
6441 || (R_TYPE) == R_ARM_TLS_LE32 \
6442 || (R_TYPE) == R_ARM_TLS_IE32)
6444 /* Relocate an ARM ELF section. */
6446 elf32_arm_relocate_section (bfd
* output_bfd
,
6447 struct bfd_link_info
* info
,
6449 asection
* input_section
,
6450 bfd_byte
* contents
,
6451 Elf_Internal_Rela
* relocs
,
6452 Elf_Internal_Sym
* local_syms
,
6453 asection
** local_sections
)
6455 Elf_Internal_Shdr
*symtab_hdr
;
6456 struct elf_link_hash_entry
**sym_hashes
;
6457 Elf_Internal_Rela
*rel
;
6458 Elf_Internal_Rela
*relend
;
6460 struct elf32_arm_link_hash_table
* globals
;
6462 globals
= elf32_arm_hash_table (info
);
6464 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
6465 sym_hashes
= elf_sym_hashes (input_bfd
);
6468 relend
= relocs
+ input_section
->reloc_count
;
6469 for (; rel
< relend
; rel
++)
6472 reloc_howto_type
* howto
;
6473 unsigned long r_symndx
;
6474 Elf_Internal_Sym
* sym
;
6476 struct elf_link_hash_entry
* h
;
6478 bfd_reloc_status_type r
;
6481 bfd_boolean unresolved_reloc
= FALSE
;
6482 char *error_message
= NULL
;
6484 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6485 r_type
= ELF32_R_TYPE (rel
->r_info
);
6486 r_type
= arm_real_reloc_type (globals
, r_type
);
6488 if ( r_type
== R_ARM_GNU_VTENTRY
6489 || r_type
== R_ARM_GNU_VTINHERIT
)
6492 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
6493 howto
= bfd_reloc
.howto
;
6499 if (r_symndx
< symtab_hdr
->sh_info
)
6501 sym
= local_syms
+ r_symndx
;
6502 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
6503 sec
= local_sections
[r_symndx
];
6504 if (globals
->use_rel
)
6506 relocation
= (sec
->output_section
->vma
6507 + sec
->output_offset
6509 if (!info
->relocatable
6510 && (sec
->flags
& SEC_MERGE
)
6511 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
6514 bfd_vma addend
, value
;
6518 case R_ARM_MOVW_ABS_NC
:
6519 case R_ARM_MOVT_ABS
:
6520 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
6521 addend
= ((value
& 0xf0000) >> 4) | (value
& 0xfff);
6522 addend
= (addend
^ 0x8000) - 0x8000;
6525 case R_ARM_THM_MOVW_ABS_NC
:
6526 case R_ARM_THM_MOVT_ABS
:
6527 value
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
)
6529 value
|= bfd_get_16 (input_bfd
,
6530 contents
+ rel
->r_offset
+ 2);
6531 addend
= ((value
& 0xf7000) >> 4) | (value
& 0xff)
6532 | ((value
& 0x04000000) >> 15);
6533 addend
= (addend
^ 0x8000) - 0x8000;
6537 if (howto
->rightshift
6538 || (howto
->src_mask
& (howto
->src_mask
+ 1)))
6540 (*_bfd_error_handler
)
6541 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
6542 input_bfd
, input_section
,
6543 (long) rel
->r_offset
, howto
->name
);
6547 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
6549 /* Get the (signed) value from the instruction. */
6550 addend
= value
& howto
->src_mask
;
6551 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6553 bfd_signed_vma mask
;
6556 mask
&= ~ howto
->src_mask
;
6564 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
6566 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
6568 /* Cases here must match those in the preceeding
6569 switch statement. */
6572 case R_ARM_MOVW_ABS_NC
:
6573 case R_ARM_MOVT_ABS
:
6574 value
= (value
& 0xfff0f000) | ((addend
& 0xf000) << 4)
6576 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
6579 case R_ARM_THM_MOVW_ABS_NC
:
6580 case R_ARM_THM_MOVT_ABS
:
6581 value
= (value
& 0xfbf08f00) | ((addend
& 0xf700) << 4)
6582 | (addend
& 0xff) | ((addend
& 0x0800) << 15);
6583 bfd_put_16 (input_bfd
, value
>> 16,
6584 contents
+ rel
->r_offset
);
6585 bfd_put_16 (input_bfd
, value
,
6586 contents
+ rel
->r_offset
+ 2);
6590 value
= (value
& ~ howto
->dst_mask
)
6591 | (addend
& howto
->dst_mask
);
6592 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
6598 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6604 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6605 r_symndx
, symtab_hdr
, sym_hashes
,
6607 unresolved_reloc
, warned
);
6612 if (sec
!= NULL
&& elf_discarded_section (sec
))
6614 /* For relocs against symbols from removed linkonce sections,
6615 or sections discarded by a linker script, we just want the
6616 section contents zeroed. Avoid any special processing. */
6617 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
6623 if (info
->relocatable
)
6625 /* This is a relocatable link. We don't have to change
6626 anything, unless the reloc is against a section symbol,
6627 in which case we have to adjust according to where the
6628 section symbol winds up in the output section. */
6629 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
6631 if (globals
->use_rel
)
6632 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
6633 howto
, (bfd_signed_vma
) sec
->output_offset
);
6635 rel
->r_addend
+= sec
->output_offset
;
6641 name
= h
->root
.root
.string
;
6644 name
= (bfd_elf_string_from_elf_section
6645 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
6646 if (name
== NULL
|| *name
== '\0')
6647 name
= bfd_section_name (input_bfd
, sec
);
6651 && r_type
!= R_ARM_NONE
6653 || h
->root
.type
== bfd_link_hash_defined
6654 || h
->root
.type
== bfd_link_hash_defweak
)
6655 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
6657 (*_bfd_error_handler
)
6658 ((sym_type
== STT_TLS
6659 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6660 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6663 (long) rel
->r_offset
,
6668 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
6669 input_section
, contents
, rel
,
6670 relocation
, info
, sec
, name
,
6671 (h
? ELF_ST_TYPE (h
->type
) :
6672 ELF_ST_TYPE (sym
->st_info
)), h
,
6673 &unresolved_reloc
, &error_message
);
6675 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6676 because such sections are not SEC_ALLOC and thus ld.so will
6677 not process them. */
6678 if (unresolved_reloc
6679 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
6682 (*_bfd_error_handler
)
6683 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6686 (long) rel
->r_offset
,
6688 h
->root
.root
.string
);
6692 if (r
!= bfd_reloc_ok
)
6696 case bfd_reloc_overflow
:
6697 /* If the overflowing reloc was to an undefined symbol,
6698 we have already printed one error message and there
6699 is no point complaining again. */
6701 h
->root
.type
!= bfd_link_hash_undefined
)
6702 && (!((*info
->callbacks
->reloc_overflow
)
6703 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
6704 (bfd_vma
) 0, input_bfd
, input_section
,
6709 case bfd_reloc_undefined
:
6710 if (!((*info
->callbacks
->undefined_symbol
)
6711 (info
, name
, input_bfd
, input_section
,
6712 rel
->r_offset
, TRUE
)))
6716 case bfd_reloc_outofrange
:
6717 error_message
= _("out of range");
6720 case bfd_reloc_notsupported
:
6721 error_message
= _("unsupported relocation");
6724 case bfd_reloc_dangerous
:
6725 /* error_message should already be set. */
6729 error_message
= _("unknown error");
6733 BFD_ASSERT (error_message
!= NULL
);
6734 if (!((*info
->callbacks
->reloc_dangerous
)
6735 (info
, error_message
, input_bfd
, input_section
,
6746 /* Set the right machine number. */
6749 elf32_arm_object_p (bfd
*abfd
)
6753 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
6755 if (mach
!= bfd_mach_arm_unknown
)
6756 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
6758 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
6759 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
6762 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
6767 /* Function to keep ARM specific flags in the ELF header. */
6770 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
6772 if (elf_flags_init (abfd
)
6773 && elf_elfheader (abfd
)->e_flags
!= flags
)
6775 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
6777 if (flags
& EF_ARM_INTERWORK
)
6778 (*_bfd_error_handler
)
6779 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
6783 (_("Warning: Clearing the interworking flag of %B due to outside request"),
6789 elf_elfheader (abfd
)->e_flags
= flags
;
6790 elf_flags_init (abfd
) = TRUE
;
6796 /* Copy backend specific data from one object module to another. */
6799 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
6804 if (! is_arm_elf (ibfd
) || ! is_arm_elf (obfd
))
6807 in_flags
= elf_elfheader (ibfd
)->e_flags
;
6808 out_flags
= elf_elfheader (obfd
)->e_flags
;
6810 if (elf_flags_init (obfd
)
6811 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
6812 && in_flags
!= out_flags
)
6814 /* Cannot mix APCS26 and APCS32 code. */
6815 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
6818 /* Cannot mix float APCS and non-float APCS code. */
6819 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
6822 /* If the src and dest have different interworking flags
6823 then turn off the interworking bit. */
6824 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
6826 if (out_flags
& EF_ARM_INTERWORK
)
6828 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
6831 in_flags
&= ~EF_ARM_INTERWORK
;
6834 /* Likewise for PIC, though don't warn for this case. */
6835 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
6836 in_flags
&= ~EF_ARM_PIC
;
6839 elf_elfheader (obfd
)->e_flags
= in_flags
;
6840 elf_flags_init (obfd
) = TRUE
;
6842 /* Also copy the EI_OSABI field. */
6843 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
6844 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
6846 /* Copy object attributes. */
6847 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
6852 /* Values for Tag_ABI_PCS_R9_use. */
6861 /* Values for Tag_ABI_PCS_RW_data. */
6864 AEABI_PCS_RW_data_absolute
,
6865 AEABI_PCS_RW_data_PCrel
,
6866 AEABI_PCS_RW_data_SBrel
,
6867 AEABI_PCS_RW_data_unused
6870 /* Values for Tag_ABI_enum_size. */
6876 AEABI_enum_forced_wide
6879 /* Determine whether an object attribute tag takes an integer, a
6882 elf32_arm_obj_attrs_arg_type (int tag
)
6884 if (tag
== Tag_compatibility
)
6886 else if (tag
== 4 || tag
== 5)
6891 return (tag
& 1) != 0 ? 2 : 1;
6894 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
6895 are conflicting attributes. */
6897 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
6899 obj_attribute
*in_attr
;
6900 obj_attribute
*out_attr
;
6901 obj_attribute_list
*in_list
;
6902 /* Some tags have 0 = don't care, 1 = strong requirement,
6903 2 = weak requirement. */
6904 static const int order_312
[3] = {3, 1, 2};
6905 /* For use with Tag_VFP_arch. */
6906 static const int order_01243
[5] = {0, 1, 2, 4, 3};
6909 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
6911 /* This is the first object. Copy the attributes. */
6912 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
6914 /* Use the Tag_null value to indicate the attributes have been
6916 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
6921 in_attr
= elf_known_obj_attributes_proc (ibfd
);
6922 out_attr
= elf_known_obj_attributes_proc (obfd
);
6923 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
6924 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
6926 /* Ignore mismatches if teh object doesn't use floating point. */
6927 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
6928 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
6929 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
6932 (_("ERROR: %B uses VFP register arguments, %B does not"),
6938 for (i
= 4; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
6940 /* Merge this attribute with existing attributes. */
6943 case Tag_CPU_raw_name
:
6945 /* Use whichever has the greatest architecture requirements. We
6946 won't necessarily have both the above tags, so make sure input
6947 name is non-NULL. */
6948 if (in_attr
[Tag_CPU_arch
].i
> out_attr
[Tag_CPU_arch
].i
6950 out_attr
[i
].s
= _bfd_elf_attr_strdup (obfd
, in_attr
[i
].s
);
6953 case Tag_ABI_optimization_goals
:
6954 case Tag_ABI_FP_optimization_goals
:
6955 /* Use the first value seen. */
6959 case Tag_ARM_ISA_use
:
6960 case Tag_THUMB_ISA_use
:
6963 /* ??? Do NEON and WMMX conflict? */
6964 case Tag_ABI_FP_rounding
:
6965 case Tag_ABI_FP_denormal
:
6966 case Tag_ABI_FP_exceptions
:
6967 case Tag_ABI_FP_user_exceptions
:
6968 case Tag_ABI_FP_number_model
:
6969 case Tag_ABI_align8_preserved
:
6970 case Tag_ABI_HardFP_use
:
6971 /* Use the largest value specified. */
6972 if (in_attr
[i
].i
> out_attr
[i
].i
)
6973 out_attr
[i
].i
= in_attr
[i
].i
;
6976 case Tag_CPU_arch_profile
:
6977 /* Warn if conflicting architecture profiles used. */
6978 if (out_attr
[i
].i
&& in_attr
[i
].i
&& in_attr
[i
].i
!= out_attr
[i
].i
)
6981 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
6982 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
6986 out_attr
[i
].i
= in_attr
[i
].i
;
6989 if (in_attr
[i
].i
> 4 || out_attr
[i
].i
> 4
6990 || order_01243
[in_attr
[i
].i
] > order_01243
[out_attr
[i
].i
])
6991 out_attr
[i
].i
= in_attr
[i
].i
;
6993 case Tag_PCS_config
:
6994 if (out_attr
[i
].i
== 0)
6995 out_attr
[i
].i
= in_attr
[i
].i
;
6996 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
6998 /* It's sometimes ok to mix different configs, so this is only
7001 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
7004 case Tag_ABI_PCS_R9_use
:
7005 if (in_attr
[i
].i
!= out_attr
[i
].i
7006 && out_attr
[i
].i
!= AEABI_R9_unused
7007 && in_attr
[i
].i
!= AEABI_R9_unused
)
7010 (_("ERROR: %B: Conflicting use of R9"), ibfd
);
7013 if (out_attr
[i
].i
== AEABI_R9_unused
)
7014 out_attr
[i
].i
= in_attr
[i
].i
;
7016 case Tag_ABI_PCS_RW_data
:
7017 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
7018 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
7019 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
7022 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
7026 /* Use the smallest value specified. */
7027 if (in_attr
[i
].i
< out_attr
[i
].i
)
7028 out_attr
[i
].i
= in_attr
[i
].i
;
7030 case Tag_ABI_PCS_RO_data
:
7031 /* Use the smallest value specified. */
7032 if (in_attr
[i
].i
< out_attr
[i
].i
)
7033 out_attr
[i
].i
= in_attr
[i
].i
;
7035 case Tag_ABI_PCS_GOT_use
:
7036 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
7037 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
7038 out_attr
[i
].i
= in_attr
[i
].i
;
7040 case Tag_ABI_PCS_wchar_t
:
7041 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
)
7044 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd
);
7048 out_attr
[i
].i
= in_attr
[i
].i
;
7050 case Tag_ABI_align8_needed
:
7051 /* ??? Check against Tag_ABI_align8_preserved. */
7052 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
7053 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
7054 out_attr
[i
].i
= in_attr
[i
].i
;
7056 case Tag_ABI_enum_size
:
7057 if (in_attr
[i
].i
!= AEABI_enum_unused
)
7059 if (out_attr
[i
].i
== AEABI_enum_unused
7060 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
7062 /* The existing object is compatible with anything.
7063 Use whatever requirements the new object has. */
7064 out_attr
[i
].i
= in_attr
[i
].i
;
7066 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
7067 && out_attr
[i
].i
!= in_attr
[i
].i
7068 && !elf_arm_tdata (obfd
)->no_enum_size_warning
)
7070 const char *aeabi_enum_names
[] =
7071 { "", "variable-size", "32-bit", "" };
7073 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
7074 ibfd
, aeabi_enum_names
[in_attr
[i
].i
],
7075 aeabi_enum_names
[out_attr
[i
].i
]);
7079 case Tag_ABI_VFP_args
:
7082 case Tag_ABI_WMMX_args
:
7083 if (in_attr
[i
].i
!= out_attr
[i
].i
)
7086 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
7091 default: /* All known attributes should be explicitly covered. */
7095 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
7096 switch (in_attr
[i
].type
)
7100 out_attr
[i
].type
= 1;
7105 out_attr
[i
].type
= 2;
7113 /* Merge Tag_compatibility attributes and any common GNU ones. */
7114 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
7116 /* Check for any attributes not known on ARM. */
7117 in_list
= elf_other_obj_attributes_proc (ibfd
);
7118 while (in_list
&& in_list
->tag
== Tag_compatibility
)
7119 in_list
= in_list
->next
;
7121 for (; in_list
; in_list
= in_list
->next
)
7123 if ((in_list
->tag
& 128) < 64)
7126 (_("Warning: %B: Unknown EABI object attribute %d"),
7127 ibfd
, in_list
->tag
);
7135 /* Return TRUE if the two EABI versions are incompatible. */
7138 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
7140 /* v4 and v5 are the same spec before and after it was released,
7141 so allow mixing them. */
7142 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
7143 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
7146 return (iver
== over
);
7149 /* Merge backend specific data from an object file to the output
7150 object file when linking. */
7153 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
7157 bfd_boolean flags_compatible
= TRUE
;
7160 /* Check if we have the same endianess. */
7161 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
7164 if (! is_arm_elf (ibfd
) || ! is_arm_elf (obfd
))
7167 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
7170 /* The input BFD must have had its flags initialised. */
7171 /* The following seems bogus to me -- The flags are initialized in
7172 the assembler but I don't think an elf_flags_init field is
7173 written into the object. */
7174 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7176 in_flags
= elf_elfheader (ibfd
)->e_flags
;
7177 out_flags
= elf_elfheader (obfd
)->e_flags
;
7179 if (!elf_flags_init (obfd
))
7181 /* If the input is the default architecture and had the default
7182 flags then do not bother setting the flags for the output
7183 architecture, instead allow future merges to do this. If no
7184 future merges ever set these flags then they will retain their
7185 uninitialised values, which surprise surprise, correspond
7186 to the default values. */
7187 if (bfd_get_arch_info (ibfd
)->the_default
7188 && elf_elfheader (ibfd
)->e_flags
== 0)
7191 elf_flags_init (obfd
) = TRUE
;
7192 elf_elfheader (obfd
)->e_flags
= in_flags
;
7194 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
7195 && bfd_get_arch_info (obfd
)->the_default
)
7196 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
7201 /* Determine what should happen if the input ARM architecture
7202 does not match the output ARM architecture. */
7203 if (! bfd_arm_merge_machines (ibfd
, obfd
))
7206 /* Identical flags must be compatible. */
7207 if (in_flags
== out_flags
)
7210 /* Check to see if the input BFD actually contains any sections. If
7211 not, its flags may not have been initialised either, but it
7212 cannot actually cause any incompatiblity. Do not short-circuit
7213 dynamic objects; their section list may be emptied by
7214 elf_link_add_object_symbols.
7216 Also check to see if there are no code sections in the input.
7217 In this case there is no need to check for code specific flags.
7218 XXX - do we need to worry about floating-point format compatability
7219 in data sections ? */
7220 if (!(ibfd
->flags
& DYNAMIC
))
7222 bfd_boolean null_input_bfd
= TRUE
;
7223 bfd_boolean only_data_sections
= TRUE
;
7225 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7227 /* Ignore synthetic glue sections. */
7228 if (strcmp (sec
->name
, ".glue_7")
7229 && strcmp (sec
->name
, ".glue_7t"))
7231 if ((bfd_get_section_flags (ibfd
, sec
)
7232 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7233 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7234 only_data_sections
= FALSE
;
7236 null_input_bfd
= FALSE
;
7241 if (null_input_bfd
|| only_data_sections
)
7245 /* Complain about various flag mismatches. */
7246 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
7247 EF_ARM_EABI_VERSION (out_flags
)))
7250 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
7252 (in_flags
& EF_ARM_EABIMASK
) >> 24,
7253 (out_flags
& EF_ARM_EABIMASK
) >> 24);
7257 /* Not sure what needs to be checked for EABI versions >= 1. */
7258 /* VxWorks libraries do not use these flags. */
7259 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
7260 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
7261 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
7263 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
7266 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
7268 in_flags
& EF_ARM_APCS_26
? 26 : 32,
7269 out_flags
& EF_ARM_APCS_26
? 26 : 32);
7270 flags_compatible
= FALSE
;
7273 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
7275 if (in_flags
& EF_ARM_APCS_FLOAT
)
7277 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
7281 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
7284 flags_compatible
= FALSE
;
7287 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
7289 if (in_flags
& EF_ARM_VFP_FLOAT
)
7291 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
7295 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
7298 flags_compatible
= FALSE
;
7301 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
7303 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
7305 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
7309 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
7312 flags_compatible
= FALSE
;
7315 #ifdef EF_ARM_SOFT_FLOAT
7316 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
7318 /* We can allow interworking between code that is VFP format
7319 layout, and uses either soft float or integer regs for
7320 passing floating point arguments and results. We already
7321 know that the APCS_FLOAT flags match; similarly for VFP
7323 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
7324 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
7326 if (in_flags
& EF_ARM_SOFT_FLOAT
)
7328 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
7332 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
7335 flags_compatible
= FALSE
;
7340 /* Interworking mismatch is only a warning. */
7341 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
7343 if (in_flags
& EF_ARM_INTERWORK
)
7346 (_("Warning: %B supports interworking, whereas %B does not"),
7352 (_("Warning: %B does not support interworking, whereas %B does"),
7358 return flags_compatible
;
7361 /* Display the flags field. */
7364 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
7366 FILE * file
= (FILE *) ptr
;
7367 unsigned long flags
;
7369 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
7371 /* Print normal ELF private data. */
7372 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
7374 flags
= elf_elfheader (abfd
)->e_flags
;
7375 /* Ignore init flag - it may not be set, despite the flags field
7376 containing valid data. */
7378 /* xgettext:c-format */
7379 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
7381 switch (EF_ARM_EABI_VERSION (flags
))
7383 case EF_ARM_EABI_UNKNOWN
:
7384 /* The following flag bits are GNU extensions and not part of the
7385 official ARM ELF extended ABI. Hence they are only decoded if
7386 the EABI version is not set. */
7387 if (flags
& EF_ARM_INTERWORK
)
7388 fprintf (file
, _(" [interworking enabled]"));
7390 if (flags
& EF_ARM_APCS_26
)
7391 fprintf (file
, " [APCS-26]");
7393 fprintf (file
, " [APCS-32]");
7395 if (flags
& EF_ARM_VFP_FLOAT
)
7396 fprintf (file
, _(" [VFP float format]"));
7397 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
7398 fprintf (file
, _(" [Maverick float format]"));
7400 fprintf (file
, _(" [FPA float format]"));
7402 if (flags
& EF_ARM_APCS_FLOAT
)
7403 fprintf (file
, _(" [floats passed in float registers]"));
7405 if (flags
& EF_ARM_PIC
)
7406 fprintf (file
, _(" [position independent]"));
7408 if (flags
& EF_ARM_NEW_ABI
)
7409 fprintf (file
, _(" [new ABI]"));
7411 if (flags
& EF_ARM_OLD_ABI
)
7412 fprintf (file
, _(" [old ABI]"));
7414 if (flags
& EF_ARM_SOFT_FLOAT
)
7415 fprintf (file
, _(" [software FP]"));
7417 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
7418 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
7419 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
7420 | EF_ARM_MAVERICK_FLOAT
);
7423 case EF_ARM_EABI_VER1
:
7424 fprintf (file
, _(" [Version1 EABI]"));
7426 if (flags
& EF_ARM_SYMSARESORTED
)
7427 fprintf (file
, _(" [sorted symbol table]"));
7429 fprintf (file
, _(" [unsorted symbol table]"));
7431 flags
&= ~ EF_ARM_SYMSARESORTED
;
7434 case EF_ARM_EABI_VER2
:
7435 fprintf (file
, _(" [Version2 EABI]"));
7437 if (flags
& EF_ARM_SYMSARESORTED
)
7438 fprintf (file
, _(" [sorted symbol table]"));
7440 fprintf (file
, _(" [unsorted symbol table]"));
7442 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
7443 fprintf (file
, _(" [dynamic symbols use segment index]"));
7445 if (flags
& EF_ARM_MAPSYMSFIRST
)
7446 fprintf (file
, _(" [mapping symbols precede others]"));
7448 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
7449 | EF_ARM_MAPSYMSFIRST
);
7452 case EF_ARM_EABI_VER3
:
7453 fprintf (file
, _(" [Version3 EABI]"));
7456 case EF_ARM_EABI_VER4
:
7457 fprintf (file
, _(" [Version4 EABI]"));
7460 case EF_ARM_EABI_VER5
:
7461 fprintf (file
, _(" [Version5 EABI]"));
7463 if (flags
& EF_ARM_BE8
)
7464 fprintf (file
, _(" [BE8]"));
7466 if (flags
& EF_ARM_LE8
)
7467 fprintf (file
, _(" [LE8]"));
7469 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
7473 fprintf (file
, _(" <EABI version unrecognised>"));
7477 flags
&= ~ EF_ARM_EABIMASK
;
7479 if (flags
& EF_ARM_RELEXEC
)
7480 fprintf (file
, _(" [relocatable executable]"));
7482 if (flags
& EF_ARM_HASENTRY
)
7483 fprintf (file
, _(" [has entry point]"));
7485 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
7488 fprintf (file
, _("<Unrecognised flag bits set>"));
7496 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
7498 switch (ELF_ST_TYPE (elf_sym
->st_info
))
7501 return ELF_ST_TYPE (elf_sym
->st_info
);
7504 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
7505 This allows us to distinguish between data used by Thumb instructions
7506 and non-data (which is probably code) inside Thumb regions of an
7508 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
7509 return ELF_ST_TYPE (elf_sym
->st_info
);
7520 elf32_arm_gc_mark_hook (asection
*sec
,
7521 struct bfd_link_info
*info
,
7522 Elf_Internal_Rela
*rel
,
7523 struct elf_link_hash_entry
*h
,
7524 Elf_Internal_Sym
*sym
)
7527 switch (ELF32_R_TYPE (rel
->r_info
))
7529 case R_ARM_GNU_VTINHERIT
:
7530 case R_ARM_GNU_VTENTRY
:
7534 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
7537 /* Update the got entry reference counts for the section being removed. */
7540 elf32_arm_gc_sweep_hook (bfd
* abfd
,
7541 struct bfd_link_info
* info
,
7543 const Elf_Internal_Rela
* relocs
)
7545 Elf_Internal_Shdr
*symtab_hdr
;
7546 struct elf_link_hash_entry
**sym_hashes
;
7547 bfd_signed_vma
*local_got_refcounts
;
7548 const Elf_Internal_Rela
*rel
, *relend
;
7549 struct elf32_arm_link_hash_table
* globals
;
7551 if (info
->relocatable
)
7554 globals
= elf32_arm_hash_table (info
);
7556 elf_section_data (sec
)->local_dynrel
= NULL
;
7558 symtab_hdr
= & elf_symtab_hdr (abfd
);
7559 sym_hashes
= elf_sym_hashes (abfd
);
7560 local_got_refcounts
= elf_local_got_refcounts (abfd
);
7562 check_use_blx(globals
);
7564 relend
= relocs
+ sec
->reloc_count
;
7565 for (rel
= relocs
; rel
< relend
; rel
++)
7567 unsigned long r_symndx
;
7568 struct elf_link_hash_entry
*h
= NULL
;
7571 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7572 if (r_symndx
>= symtab_hdr
->sh_info
)
7574 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7575 while (h
->root
.type
== bfd_link_hash_indirect
7576 || h
->root
.type
== bfd_link_hash_warning
)
7577 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7580 r_type
= ELF32_R_TYPE (rel
->r_info
);
7581 r_type
= arm_real_reloc_type (globals
, r_type
);
7585 case R_ARM_GOT_PREL
:
7586 case R_ARM_TLS_GD32
:
7587 case R_ARM_TLS_IE32
:
7590 if (h
->got
.refcount
> 0)
7591 h
->got
.refcount
-= 1;
7593 else if (local_got_refcounts
!= NULL
)
7595 if (local_got_refcounts
[r_symndx
] > 0)
7596 local_got_refcounts
[r_symndx
] -= 1;
7600 case R_ARM_TLS_LDM32
:
7601 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
7605 case R_ARM_ABS32_NOI
:
7607 case R_ARM_REL32_NOI
:
7613 case R_ARM_THM_CALL
:
7614 case R_ARM_THM_JUMP24
:
7615 case R_ARM_THM_JUMP19
:
7616 case R_ARM_MOVW_ABS_NC
:
7617 case R_ARM_MOVT_ABS
:
7618 case R_ARM_MOVW_PREL_NC
:
7619 case R_ARM_MOVT_PREL
:
7620 case R_ARM_THM_MOVW_ABS_NC
:
7621 case R_ARM_THM_MOVT_ABS
:
7622 case R_ARM_THM_MOVW_PREL_NC
:
7623 case R_ARM_THM_MOVT_PREL
:
7624 /* Should the interworking branches be here also? */
7628 struct elf32_arm_link_hash_entry
*eh
;
7629 struct elf32_arm_relocs_copied
**pp
;
7630 struct elf32_arm_relocs_copied
*p
;
7632 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7634 if (h
->plt
.refcount
> 0)
7636 h
->plt
.refcount
-= 1;
7637 if (r_type
== R_ARM_THM_CALL
)
7638 eh
->plt_maybe_thumb_refcount
--;
7640 if (r_type
== R_ARM_THM_JUMP24
7641 || r_type
== R_ARM_THM_JUMP19
)
7642 eh
->plt_thumb_refcount
--;
7645 if (r_type
== R_ARM_ABS32
7646 || r_type
== R_ARM_REL32
7647 || r_type
== R_ARM_ABS32_NOI
7648 || r_type
== R_ARM_REL32_NOI
)
7650 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
7652 if (p
->section
== sec
)
7655 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
7656 || ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32_NOI
)
7674 /* Look through the relocs for a section during the first phase. */
7677 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
7678 asection
*sec
, const Elf_Internal_Rela
*relocs
)
7680 Elf_Internal_Shdr
*symtab_hdr
;
7681 struct elf_link_hash_entry
**sym_hashes
;
7682 const Elf_Internal_Rela
*rel
;
7683 const Elf_Internal_Rela
*rel_end
;
7686 bfd_vma
*local_got_offsets
;
7687 struct elf32_arm_link_hash_table
*htab
;
7688 bfd_boolean needs_plt
;
7690 if (info
->relocatable
)
7693 BFD_ASSERT (is_arm_elf (abfd
));
7695 htab
= elf32_arm_hash_table (info
);
7698 /* Create dynamic sections for relocatable executables so that we can
7699 copy relocations. */
7700 if (htab
->root
.is_relocatable_executable
7701 && ! htab
->root
.dynamic_sections_created
)
7703 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
7707 dynobj
= elf_hash_table (info
)->dynobj
;
7708 local_got_offsets
= elf_local_got_offsets (abfd
);
7710 symtab_hdr
= & elf_symtab_hdr (abfd
);
7711 sym_hashes
= elf_sym_hashes (abfd
);
7713 rel_end
= relocs
+ sec
->reloc_count
;
7714 for (rel
= relocs
; rel
< rel_end
; rel
++)
7716 struct elf_link_hash_entry
*h
;
7717 struct elf32_arm_link_hash_entry
*eh
;
7718 unsigned long r_symndx
;
7721 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7722 r_type
= ELF32_R_TYPE (rel
->r_info
);
7723 r_type
= arm_real_reloc_type (htab
, r_type
);
7725 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7727 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
7732 if (r_symndx
< symtab_hdr
->sh_info
)
7736 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7737 while (h
->root
.type
== bfd_link_hash_indirect
7738 || h
->root
.type
== bfd_link_hash_warning
)
7739 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7742 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7747 case R_ARM_GOT_PREL
:
7748 case R_ARM_TLS_GD32
:
7749 case R_ARM_TLS_IE32
:
7750 /* This symbol requires a global offset table entry. */
7752 int tls_type
, old_tls_type
;
7756 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
7757 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
7758 default: tls_type
= GOT_NORMAL
; break;
7764 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
7768 bfd_signed_vma
*local_got_refcounts
;
7770 /* This is a global offset table entry for a local symbol. */
7771 local_got_refcounts
= elf_local_got_refcounts (abfd
);
7772 if (local_got_refcounts
== NULL
)
7776 size
= symtab_hdr
->sh_info
;
7777 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
7778 local_got_refcounts
= bfd_zalloc (abfd
, size
);
7779 if (local_got_refcounts
== NULL
)
7781 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
7782 elf32_arm_local_got_tls_type (abfd
)
7783 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
7785 local_got_refcounts
[r_symndx
] += 1;
7786 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
7789 /* We will already have issued an error message if there is a
7790 TLS / non-TLS mismatch, based on the symbol type. We don't
7791 support any linker relaxations. So just combine any TLS
7793 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
7794 && tls_type
!= GOT_NORMAL
)
7795 tls_type
|= old_tls_type
;
7797 if (old_tls_type
!= tls_type
)
7800 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
7802 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
7807 case R_ARM_TLS_LDM32
:
7808 if (r_type
== R_ARM_TLS_LDM32
)
7809 htab
->tls_ldm_got
.refcount
++;
7812 case R_ARM_GOTOFF32
:
7814 if (htab
->sgot
== NULL
)
7816 if (htab
->root
.dynobj
== NULL
)
7817 htab
->root
.dynobj
= abfd
;
7818 if (!create_got_section (htab
->root
.dynobj
, info
))
7824 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
7825 ldr __GOTT_INDEX__ offsets. */
7826 if (!htab
->vxworks_p
)
7835 case R_ARM_THM_CALL
:
7836 case R_ARM_THM_JUMP24
:
7837 case R_ARM_THM_JUMP19
:
7842 case R_ARM_ABS32_NOI
:
7844 case R_ARM_REL32_NOI
:
7845 case R_ARM_MOVW_ABS_NC
:
7846 case R_ARM_MOVT_ABS
:
7847 case R_ARM_MOVW_PREL_NC
:
7848 case R_ARM_MOVT_PREL
:
7849 case R_ARM_THM_MOVW_ABS_NC
:
7850 case R_ARM_THM_MOVT_ABS
:
7851 case R_ARM_THM_MOVW_PREL_NC
:
7852 case R_ARM_THM_MOVT_PREL
:
7856 /* Should the interworking branches be listed here? */
7859 /* If this reloc is in a read-only section, we might
7860 need a copy reloc. We can't check reliably at this
7861 stage whether the section is read-only, as input
7862 sections have not yet been mapped to output sections.
7863 Tentatively set the flag for now, and correct in
7864 adjust_dynamic_symbol. */
7868 /* We may need a .plt entry if the function this reloc
7869 refers to is in a different object. We can't tell for
7870 sure yet, because something later might force the
7875 /* If we create a PLT entry, this relocation will reference
7876 it, even if it's an ABS32 relocation. */
7877 h
->plt
.refcount
+= 1;
7879 /* It's too early to use htab->use_blx here, so we have to
7880 record possible blx references separately from
7881 relocs that definitely need a thumb stub. */
7883 if (r_type
== R_ARM_THM_CALL
)
7884 eh
->plt_maybe_thumb_refcount
+= 1;
7886 if (r_type
== R_ARM_THM_JUMP24
7887 || r_type
== R_ARM_THM_JUMP19
)
7888 eh
->plt_thumb_refcount
+= 1;
7891 /* If we are creating a shared library or relocatable executable,
7892 and this is a reloc against a global symbol, or a non PC
7893 relative reloc against a local symbol, then we need to copy
7894 the reloc into the shared library. However, if we are linking
7895 with -Bsymbolic, we do not need to copy a reloc against a
7896 global symbol which is defined in an object we are
7897 including in the link (i.e., DEF_REGULAR is set). At
7898 this point we have not seen all the input files, so it is
7899 possible that DEF_REGULAR is not set now but will be set
7900 later (it is never cleared). We account for that
7901 possibility below by storing information in the
7902 relocs_copied field of the hash table entry. */
7903 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
7904 && (sec
->flags
& SEC_ALLOC
) != 0
7905 && ((r_type
== R_ARM_ABS32
|| r_type
== R_ARM_ABS32_NOI
)
7906 || (h
!= NULL
&& ! h
->needs_plt
7907 && (! info
->symbolic
|| ! h
->def_regular
))))
7909 struct elf32_arm_relocs_copied
*p
, **head
;
7911 /* When creating a shared object, we must copy these
7912 reloc types into the output file. We create a reloc
7913 section in dynobj and make room for this reloc. */
7918 name
= (bfd_elf_string_from_elf_section
7920 elf_elfheader (abfd
)->e_shstrndx
,
7921 elf_section_data (sec
)->rel_hdr
.sh_name
));
7925 BFD_ASSERT (reloc_section_p (htab
, name
, sec
));
7927 sreloc
= bfd_get_section_by_name (dynobj
, name
);
7932 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
7933 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
7934 if ((sec
->flags
& SEC_ALLOC
) != 0
7935 /* BPABI objects never have dynamic
7936 relocations mapped. */
7937 && !htab
->symbian_p
)
7938 flags
|= SEC_ALLOC
| SEC_LOAD
;
7939 sreloc
= bfd_make_section_with_flags (dynobj
,
7943 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
7947 elf_section_data (sec
)->sreloc
= sreloc
;
7950 /* If this is a global symbol, we count the number of
7951 relocations we need for this symbol. */
7954 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
7958 /* Track dynamic relocs needed for local syms too.
7959 We really need local syms available to do this
7965 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
7970 vpp
= &elf_section_data (s
)->local_dynrel
;
7971 head
= (struct elf32_arm_relocs_copied
**) vpp
;
7975 if (p
== NULL
|| p
->section
!= sec
)
7977 bfd_size_type amt
= sizeof *p
;
7979 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
7989 if (r_type
== R_ARM_REL32
|| r_type
== R_ARM_REL32_NOI
)
7995 /* This relocation describes the C++ object vtable hierarchy.
7996 Reconstruct it for later use during GC. */
7997 case R_ARM_GNU_VTINHERIT
:
7998 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
8002 /* This relocation describes which C++ vtable entries are actually
8003 used. Record for later use during GC. */
8004 case R_ARM_GNU_VTENTRY
:
8005 BFD_ASSERT (h
!= NULL
);
8007 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
8016 /* Unwinding tables are not referenced directly. This pass marks them as
8017 required if the corresponding code section is marked. */
8020 elf32_arm_gc_mark_extra_sections(struct bfd_link_info
*info
,
8021 elf_gc_mark_hook_fn gc_mark_hook
)
8024 Elf_Internal_Shdr
**elf_shdrp
;
8027 /* Marking EH data may cause additional code sections to be marked,
8028 requiring multiple passes. */
8033 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
8037 if (! is_arm_elf (sub
))
8040 elf_shdrp
= elf_elfsections (sub
);
8041 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
8043 Elf_Internal_Shdr
*hdr
;
8045 hdr
= &elf_section_data (o
)->this_hdr
;
8046 if (hdr
->sh_type
== SHT_ARM_EXIDX
&& hdr
->sh_link
8048 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
8051 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
8061 /* Treat mapping symbols as special target symbols. */
8064 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
8066 return bfd_is_arm_special_symbol_name (sym
->name
,
8067 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
8070 /* This is a copy of elf_find_function() from elf.c except that
8071 ARM mapping symbols are ignored when looking for function names
8072 and STT_ARM_TFUNC is considered to a function type. */
8075 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
8079 const char ** filename_ptr
,
8080 const char ** functionname_ptr
)
8082 const char * filename
= NULL
;
8083 asymbol
* func
= NULL
;
8084 bfd_vma low_func
= 0;
8087 for (p
= symbols
; *p
!= NULL
; p
++)
8091 q
= (elf_symbol_type
*) *p
;
8093 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
8098 filename
= bfd_asymbol_name (&q
->symbol
);
8103 /* Skip mapping symbols. */
8104 if ((q
->symbol
.flags
& BSF_LOCAL
)
8105 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
8106 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
8109 if (bfd_get_section (&q
->symbol
) == section
8110 && q
->symbol
.value
>= low_func
8111 && q
->symbol
.value
<= offset
)
8113 func
= (asymbol
*) q
;
8114 low_func
= q
->symbol
.value
;
8124 *filename_ptr
= filename
;
8125 if (functionname_ptr
)
8126 *functionname_ptr
= bfd_asymbol_name (func
);
8132 /* Find the nearest line to a particular section and offset, for error
8133 reporting. This code is a duplicate of the code in elf.c, except
8134 that it uses arm_elf_find_function. */
8137 elf32_arm_find_nearest_line (bfd
* abfd
,
8141 const char ** filename_ptr
,
8142 const char ** functionname_ptr
,
8143 unsigned int * line_ptr
)
8145 bfd_boolean found
= FALSE
;
8147 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
8149 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
8150 filename_ptr
, functionname_ptr
,
8152 & elf_tdata (abfd
)->dwarf2_find_line_info
))
8154 if (!*functionname_ptr
)
8155 arm_elf_find_function (abfd
, section
, symbols
, offset
,
8156 *filename_ptr
? NULL
: filename_ptr
,
8162 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
8163 & found
, filename_ptr
,
8164 functionname_ptr
, line_ptr
,
8165 & elf_tdata (abfd
)->line_info
))
8168 if (found
&& (*functionname_ptr
|| *line_ptr
))
8171 if (symbols
== NULL
)
8174 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
8175 filename_ptr
, functionname_ptr
))
8183 elf32_arm_find_inliner_info (bfd
* abfd
,
8184 const char ** filename_ptr
,
8185 const char ** functionname_ptr
,
8186 unsigned int * line_ptr
)
8189 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
8190 functionname_ptr
, line_ptr
,
8191 & elf_tdata (abfd
)->dwarf2_find_line_info
);
8195 /* Adjust a symbol defined by a dynamic object and referenced by a
8196 regular object. The current definition is in some section of the
8197 dynamic object, but we're not including those sections. We have to
8198 change the definition to something the rest of the link can
8202 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
8203 struct elf_link_hash_entry
* h
)
8207 struct elf32_arm_link_hash_entry
* eh
;
8208 struct elf32_arm_link_hash_table
*globals
;
8210 globals
= elf32_arm_hash_table (info
);
8211 dynobj
= elf_hash_table (info
)->dynobj
;
8213 /* Make sure we know what is going on here. */
8214 BFD_ASSERT (dynobj
!= NULL
8216 || h
->u
.weakdef
!= NULL
8219 && !h
->def_regular
)));
8221 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8223 /* If this is a function, put it in the procedure linkage table. We
8224 will fill in the contents of the procedure linkage table later,
8225 when we know the address of the .got section. */
8226 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
8229 if (h
->plt
.refcount
<= 0
8230 || SYMBOL_CALLS_LOCAL (info
, h
)
8231 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
8232 && h
->root
.type
== bfd_link_hash_undefweak
))
8234 /* This case can occur if we saw a PLT32 reloc in an input
8235 file, but the symbol was never referred to by a dynamic
8236 object, or if all references were garbage collected. In
8237 such a case, we don't actually need to build a procedure
8238 linkage table, and we can just do a PC24 reloc instead. */
8239 h
->plt
.offset
= (bfd_vma
) -1;
8240 eh
->plt_thumb_refcount
= 0;
8241 eh
->plt_maybe_thumb_refcount
= 0;
8249 /* It's possible that we incorrectly decided a .plt reloc was
8250 needed for an R_ARM_PC24 or similar reloc to a non-function sym
8251 in check_relocs. We can't decide accurately between function
8252 and non-function syms in check-relocs; Objects loaded later in
8253 the link may change h->type. So fix it now. */
8254 h
->plt
.offset
= (bfd_vma
) -1;
8255 eh
->plt_thumb_refcount
= 0;
8256 eh
->plt_maybe_thumb_refcount
= 0;
8259 /* If this is a weak symbol, and there is a real definition, the
8260 processor independent code will have arranged for us to see the
8261 real definition first, and we can just use the same value. */
8262 if (h
->u
.weakdef
!= NULL
)
8264 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
8265 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
8266 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
8267 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
8271 /* If there are no non-GOT references, we do not need a copy
8273 if (!h
->non_got_ref
)
8276 /* This is a reference to a symbol defined by a dynamic object which
8277 is not a function. */
8279 /* If we are creating a shared library, we must presume that the
8280 only references to the symbol are via the global offset table.
8281 For such cases we need not do anything here; the relocations will
8282 be handled correctly by relocate_section. Relocatable executables
8283 can reference data in shared objects directly, so we don't need to
8284 do anything here. */
8285 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
8290 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
8291 h
->root
.root
.string
);
8295 /* We must allocate the symbol in our .dynbss section, which will
8296 become part of the .bss section of the executable. There will be
8297 an entry for this symbol in the .dynsym section. The dynamic
8298 object will contain position independent code, so all references
8299 from the dynamic object to this symbol will go through the global
8300 offset table. The dynamic linker will use the .dynsym entry to
8301 determine the address it must put in the global offset table, so
8302 both the dynamic object and the regular object will refer to the
8303 same memory location for the variable. */
8304 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
8305 BFD_ASSERT (s
!= NULL
);
8307 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
8308 copy the initial value out of the dynamic object and into the
8309 runtime process image. We need to remember the offset into the
8310 .rel(a).bss section we are going to use. */
8311 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
8315 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
8316 BFD_ASSERT (srel
!= NULL
);
8317 srel
->size
+= RELOC_SIZE (globals
);
8321 return _bfd_elf_adjust_dynamic_copy (h
, s
);
8324 /* Allocate space in .plt, .got and associated reloc sections for
8328 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
8330 struct bfd_link_info
*info
;
8331 struct elf32_arm_link_hash_table
*htab
;
8332 struct elf32_arm_link_hash_entry
*eh
;
8333 struct elf32_arm_relocs_copied
*p
;
8334 bfd_signed_vma thumb_refs
;
8336 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8338 if (h
->root
.type
== bfd_link_hash_indirect
)
8341 if (h
->root
.type
== bfd_link_hash_warning
)
8342 /* When warning symbols are created, they **replace** the "real"
8343 entry in the hash table, thus we never get to see the real
8344 symbol in a hash traversal. So look at it now. */
8345 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8347 info
= (struct bfd_link_info
*) inf
;
8348 htab
= elf32_arm_hash_table (info
);
8350 if (htab
->root
.dynamic_sections_created
8351 && h
->plt
.refcount
> 0)
8353 /* Make sure this symbol is output as a dynamic symbol.
8354 Undefined weak syms won't yet be marked as dynamic. */
8355 if (h
->dynindx
== -1
8356 && !h
->forced_local
)
8358 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8363 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
8365 asection
*s
= htab
->splt
;
8367 /* If this is the first .plt entry, make room for the special
8370 s
->size
+= htab
->plt_header_size
;
8372 h
->plt
.offset
= s
->size
;
8374 /* If we will insert a Thumb trampoline before this PLT, leave room
8376 thumb_refs
= eh
->plt_thumb_refcount
;
8378 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
8382 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
8383 s
->size
+= PLT_THUMB_STUB_SIZE
;
8386 /* If this symbol is not defined in a regular file, and we are
8387 not generating a shared library, then set the symbol to this
8388 location in the .plt. This is required to make function
8389 pointers compare as equal between the normal executable and
8390 the shared library. */
8394 h
->root
.u
.def
.section
= s
;
8395 h
->root
.u
.def
.value
= h
->plt
.offset
;
8397 /* Make sure the function is not marked as Thumb, in case
8398 it is the target of an ABS32 relocation, which will
8399 point to the PLT entry. */
8400 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
8401 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
8404 /* Make room for this entry. */
8405 s
->size
+= htab
->plt_entry_size
;
8407 if (!htab
->symbian_p
)
8409 /* We also need to make an entry in the .got.plt section, which
8410 will be placed in the .got section by the linker script. */
8411 eh
->plt_got_offset
= htab
->sgotplt
->size
;
8412 htab
->sgotplt
->size
+= 4;
8415 /* We also need to make an entry in the .rel(a).plt section. */
8416 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
8418 /* VxWorks executables have a second set of relocations for
8419 each PLT entry. They go in a separate relocation section,
8420 which is processed by the kernel loader. */
8421 if (htab
->vxworks_p
&& !info
->shared
)
8423 /* There is a relocation for the initial PLT entry:
8424 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
8425 if (h
->plt
.offset
== htab
->plt_header_size
)
8426 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
8428 /* There are two extra relocations for each subsequent
8429 PLT entry: an R_ARM_32 relocation for the GOT entry,
8430 and an R_ARM_32 relocation for the PLT entry. */
8431 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
8436 h
->plt
.offset
= (bfd_vma
) -1;
8442 h
->plt
.offset
= (bfd_vma
) -1;
8446 if (h
->got
.refcount
> 0)
8450 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
8453 /* Make sure this symbol is output as a dynamic symbol.
8454 Undefined weak syms won't yet be marked as dynamic. */
8455 if (h
->dynindx
== -1
8456 && !h
->forced_local
)
8458 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8462 if (!htab
->symbian_p
)
8465 h
->got
.offset
= s
->size
;
8467 if (tls_type
== GOT_UNKNOWN
)
8470 if (tls_type
== GOT_NORMAL
)
8471 /* Non-TLS symbols need one GOT slot. */
8475 if (tls_type
& GOT_TLS_GD
)
8476 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
8478 if (tls_type
& GOT_TLS_IE
)
8479 /* R_ARM_TLS_IE32 needs one GOT slot. */
8483 dyn
= htab
->root
.dynamic_sections_created
;
8486 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
8488 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
8491 if (tls_type
!= GOT_NORMAL
8492 && (info
->shared
|| indx
!= 0)
8493 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8494 || h
->root
.type
!= bfd_link_hash_undefweak
))
8496 if (tls_type
& GOT_TLS_IE
)
8497 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8499 if (tls_type
& GOT_TLS_GD
)
8500 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8502 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
8503 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8505 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8506 || h
->root
.type
!= bfd_link_hash_undefweak
)
8508 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8509 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8513 h
->got
.offset
= (bfd_vma
) -1;
8515 /* Allocate stubs for exported Thumb functions on v4t. */
8516 if (!htab
->use_blx
&& h
->dynindx
!= -1
8518 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
8519 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
8521 struct elf_link_hash_entry
* th
;
8522 struct bfd_link_hash_entry
* bh
;
8523 struct elf_link_hash_entry
* myh
;
8527 /* Create a new symbol to regist the real location of the function. */
8528 s
= h
->root
.u
.def
.section
;
8529 sprintf(name
, "__real_%s", h
->root
.root
.string
);
8530 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
8531 name
, BSF_GLOBAL
, s
,
8532 h
->root
.u
.def
.value
,
8533 NULL
, TRUE
, FALSE
, &bh
);
8535 myh
= (struct elf_link_hash_entry
*) bh
;
8536 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
8537 myh
->forced_local
= 1;
8538 eh
->export_glue
= myh
;
8539 th
= record_arm_to_thumb_glue (info
, h
);
8540 /* Point the symbol at the stub. */
8541 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
8542 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
8543 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
8546 if (eh
->relocs_copied
== NULL
)
8549 /* In the shared -Bsymbolic case, discard space allocated for
8550 dynamic pc-relative relocs against symbols which turn out to be
8551 defined in regular objects. For the normal shared case, discard
8552 space for pc-relative relocs that have become local due to symbol
8553 visibility changes. */
8555 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
8557 /* The only relocs that use pc_count are R_ARM_REL32 and
8558 R_ARM_REL32_NOI, which will appear on something like
8559 ".long foo - .". We want calls to protected symbols to resolve
8560 directly to the function rather than going via the plt. If people
8561 want function pointer comparisons to work as expected then they
8562 should avoid writing assembly like ".long foo - .". */
8563 if (SYMBOL_CALLS_LOCAL (info
, h
))
8565 struct elf32_arm_relocs_copied
**pp
;
8567 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
8569 p
->count
-= p
->pc_count
;
8578 /* Also discard relocs on undefined weak syms with non-default
8580 if (eh
->relocs_copied
!= NULL
8581 && h
->root
.type
== bfd_link_hash_undefweak
)
8583 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8584 eh
->relocs_copied
= NULL
;
8586 /* Make sure undefined weak symbols are output as a dynamic
8588 else if (h
->dynindx
== -1
8589 && !h
->forced_local
)
8591 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8596 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
8597 && h
->root
.type
== bfd_link_hash_new
)
8599 /* Output absolute symbols so that we can create relocations
8600 against them. For normal symbols we output a relocation
8601 against the section that contains them. */
8602 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8609 /* For the non-shared case, discard space for relocs against
8610 symbols which turn out to need copy relocs or are not
8616 || (htab
->root
.dynamic_sections_created
8617 && (h
->root
.type
== bfd_link_hash_undefweak
8618 || h
->root
.type
== bfd_link_hash_undefined
))))
8620 /* Make sure this symbol is output as a dynamic symbol.
8621 Undefined weak syms won't yet be marked as dynamic. */
8622 if (h
->dynindx
== -1
8623 && !h
->forced_local
)
8625 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8629 /* If that succeeded, we know we'll be keeping all the
8631 if (h
->dynindx
!= -1)
8635 eh
->relocs_copied
= NULL
;
8640 /* Finally, allocate space. */
8641 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
8643 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
8644 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
8650 /* Find any dynamic relocs that apply to read-only sections. */
8653 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
*h
, PTR inf
)
8655 struct elf32_arm_link_hash_entry
*eh
;
8656 struct elf32_arm_relocs_copied
*p
;
8658 if (h
->root
.type
== bfd_link_hash_warning
)
8659 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8661 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8662 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
8664 asection
*s
= p
->section
;
8666 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8668 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
8670 info
->flags
|= DF_TEXTREL
;
8672 /* Not an error, just cut short the traversal. */
8680 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info
*info
,
8683 struct elf32_arm_link_hash_table
*globals
;
8685 globals
= elf32_arm_hash_table (info
);
8686 globals
->byteswap_code
= byteswap_code
;
8689 /* Set the sizes of the dynamic sections. */
8692 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
8693 struct bfd_link_info
* info
)
8700 struct elf32_arm_link_hash_table
*htab
;
8702 htab
= elf32_arm_hash_table (info
);
8703 dynobj
= elf_hash_table (info
)->dynobj
;
8704 BFD_ASSERT (dynobj
!= NULL
);
8705 check_use_blx (htab
);
8707 if (elf_hash_table (info
)->dynamic_sections_created
)
8709 /* Set the contents of the .interp section to the interpreter. */
8710 if (info
->executable
)
8712 s
= bfd_get_section_by_name (dynobj
, ".interp");
8713 BFD_ASSERT (s
!= NULL
);
8714 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8715 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8719 /* Set up .got offsets for local syms, and space for local dynamic
8721 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8723 bfd_signed_vma
*local_got
;
8724 bfd_signed_vma
*end_local_got
;
8725 char *local_tls_type
;
8726 bfd_size_type locsymcount
;
8727 Elf_Internal_Shdr
*symtab_hdr
;
8730 if (! is_arm_elf (ibfd
))
8733 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8735 struct elf32_arm_relocs_copied
*p
;
8737 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8739 if (!bfd_is_abs_section (p
->section
)
8740 && bfd_is_abs_section (p
->section
->output_section
))
8742 /* Input section has been discarded, either because
8743 it is a copy of a linkonce section or due to
8744 linker script /DISCARD/, so we'll be discarding
8747 else if (p
->count
!= 0)
8749 srel
= elf_section_data (p
->section
)->sreloc
;
8750 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
8751 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
8752 info
->flags
|= DF_TEXTREL
;
8757 local_got
= elf_local_got_refcounts (ibfd
);
8761 symtab_hdr
= & elf_symtab_hdr (ibfd
);
8762 locsymcount
= symtab_hdr
->sh_info
;
8763 end_local_got
= local_got
+ locsymcount
;
8764 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
8766 srel
= htab
->srelgot
;
8767 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
8771 *local_got
= s
->size
;
8772 if (*local_tls_type
& GOT_TLS_GD
)
8773 /* TLS_GD relocs need an 8-byte structure in the GOT. */
8775 if (*local_tls_type
& GOT_TLS_IE
)
8777 if (*local_tls_type
== GOT_NORMAL
)
8780 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
8781 srel
->size
+= RELOC_SIZE (htab
);
8784 *local_got
= (bfd_vma
) -1;
8788 if (htab
->tls_ldm_got
.refcount
> 0)
8790 /* Allocate two GOT entries and one dynamic relocation (if necessary)
8791 for R_ARM_TLS_LDM32 relocations. */
8792 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
8793 htab
->sgot
->size
+= 8;
8795 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8798 htab
->tls_ldm_got
.offset
= -1;
8800 /* Allocate global sym .plt and .got entries, and space for global
8801 sym dynamic relocs. */
8802 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
8804 /* Here we rummage through the found bfds to collect glue information. */
8805 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8807 if (! is_arm_elf (ibfd
))
8810 /* Initialise mapping tables for code/data. */
8811 bfd_elf32_arm_init_maps (ibfd
);
8813 if (!bfd_elf32_arm_process_before_allocation (ibfd
, info
)
8814 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd
, info
))
8815 /* xgettext:c-format */
8816 _bfd_error_handler (_("Errors encountered processing file %s"),
8820 /* The check_relocs and adjust_dynamic_symbol entry points have
8821 determined the sizes of the various dynamic sections. Allocate
8825 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8829 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8832 /* It's OK to base decisions on the section name, because none
8833 of the dynobj section names depend upon the input files. */
8834 name
= bfd_get_section_name (dynobj
, s
);
8836 if (strcmp (name
, ".plt") == 0)
8838 /* Remember whether there is a PLT. */
8841 else if (CONST_STRNEQ (name
, ".rel"))
8845 /* Remember whether there are any reloc sections other
8846 than .rel(a).plt and .rela.plt.unloaded. */
8847 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
8850 /* We use the reloc_count field as a counter if we need
8851 to copy relocs into the output file. */
8855 else if (! CONST_STRNEQ (name
, ".got")
8856 && strcmp (name
, ".dynbss") != 0)
8858 /* It's not one of our sections, so don't allocate space. */
8864 /* If we don't need this section, strip it from the
8865 output file. This is mostly to handle .rel(a).bss and
8866 .rel(a).plt. We must create both sections in
8867 create_dynamic_sections, because they must be created
8868 before the linker maps input sections to output
8869 sections. The linker does that before
8870 adjust_dynamic_symbol is called, and it is that
8871 function which decides whether anything needs to go
8872 into these sections. */
8873 s
->flags
|= SEC_EXCLUDE
;
8877 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8880 /* Allocate memory for the section contents. */
8881 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
8882 if (s
->contents
== NULL
)
8886 if (elf_hash_table (info
)->dynamic_sections_created
)
8888 /* Add some entries to the .dynamic section. We fill in the
8889 values later, in elf32_arm_finish_dynamic_sections, but we
8890 must add the entries now so that we get the correct size for
8891 the .dynamic section. The DT_DEBUG entry is filled in by the
8892 dynamic linker and used by the debugger. */
8893 #define add_dynamic_entry(TAG, VAL) \
8894 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8896 if (info
->executable
)
8898 if (!add_dynamic_entry (DT_DEBUG
, 0))
8904 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
8905 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8906 || !add_dynamic_entry (DT_PLTREL
,
8907 htab
->use_rel
? DT_REL
: DT_RELA
)
8908 || !add_dynamic_entry (DT_JMPREL
, 0))
8916 if (!add_dynamic_entry (DT_REL
, 0)
8917 || !add_dynamic_entry (DT_RELSZ
, 0)
8918 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
8923 if (!add_dynamic_entry (DT_RELA
, 0)
8924 || !add_dynamic_entry (DT_RELASZ
, 0)
8925 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
8930 /* If any dynamic relocs apply to a read-only section,
8931 then we need a DT_TEXTREL entry. */
8932 if ((info
->flags
& DF_TEXTREL
) == 0)
8933 elf_link_hash_traverse (&htab
->root
, elf32_arm_readonly_dynrelocs
,
8936 if ((info
->flags
& DF_TEXTREL
) != 0)
8938 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8942 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
8945 #undef add_dynamic_entry
8950 /* Finish up dynamic symbol handling. We set the contents of various
8951 dynamic sections here. */
8954 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
, struct bfd_link_info
* info
,
8955 struct elf_link_hash_entry
* h
, Elf_Internal_Sym
* sym
)
8958 struct elf32_arm_link_hash_table
*htab
;
8959 struct elf32_arm_link_hash_entry
*eh
;
8961 dynobj
= elf_hash_table (info
)->dynobj
;
8962 htab
= elf32_arm_hash_table (info
);
8963 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8965 if (h
->plt
.offset
!= (bfd_vma
) -1)
8971 Elf_Internal_Rela rel
;
8973 /* This symbol has an entry in the procedure linkage table. Set
8976 BFD_ASSERT (h
->dynindx
!= -1);
8978 splt
= bfd_get_section_by_name (dynobj
, ".plt");
8979 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
8980 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
8982 /* Fill in the entry in the procedure linkage table. */
8983 if (htab
->symbian_p
)
8985 put_arm_insn (htab
, output_bfd
,
8986 elf32_arm_symbian_plt_entry
[0],
8987 splt
->contents
+ h
->plt
.offset
);
8988 bfd_put_32 (output_bfd
,
8989 elf32_arm_symbian_plt_entry
[1],
8990 splt
->contents
+ h
->plt
.offset
+ 4);
8992 /* Fill in the entry in the .rel.plt section. */
8993 rel
.r_offset
= (splt
->output_section
->vma
8994 + splt
->output_offset
8995 + h
->plt
.offset
+ 4);
8996 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
8998 /* Get the index in the procedure linkage table which
8999 corresponds to this symbol. This is the index of this symbol
9000 in all the symbols for which we are making plt entries. The
9001 first entry in the procedure linkage table is reserved. */
9002 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
9003 / htab
->plt_entry_size
);
9007 bfd_vma got_offset
, got_address
, plt_address
;
9008 bfd_vma got_displacement
;
9012 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
9013 BFD_ASSERT (sgot
!= NULL
);
9015 /* Get the offset into the .got.plt table of the entry that
9016 corresponds to this function. */
9017 got_offset
= eh
->plt_got_offset
;
9019 /* Get the index in the procedure linkage table which
9020 corresponds to this symbol. This is the index of this symbol
9021 in all the symbols for which we are making plt entries. The
9022 first three entries in .got.plt are reserved; after that
9023 symbols appear in the same order as in .plt. */
9024 plt_index
= (got_offset
- 12) / 4;
9026 /* Calculate the address of the GOT entry. */
9027 got_address
= (sgot
->output_section
->vma
9028 + sgot
->output_offset
9031 /* ...and the address of the PLT entry. */
9032 plt_address
= (splt
->output_section
->vma
9033 + splt
->output_offset
9036 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
9037 if (htab
->vxworks_p
&& info
->shared
)
9042 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
9044 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
9046 val
|= got_address
- sgot
->output_section
->vma
;
9048 val
|= plt_index
* RELOC_SIZE (htab
);
9049 if (i
== 2 || i
== 5)
9050 bfd_put_32 (output_bfd
, val
, ptr
);
9052 put_arm_insn (htab
, output_bfd
, val
, ptr
);
9055 else if (htab
->vxworks_p
)
9060 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
9062 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
9066 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
9068 val
|= plt_index
* RELOC_SIZE (htab
);
9069 if (i
== 2 || i
== 5)
9070 bfd_put_32 (output_bfd
, val
, ptr
);
9072 put_arm_insn (htab
, output_bfd
, val
, ptr
);
9075 loc
= (htab
->srelplt2
->contents
9076 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
9078 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
9079 referencing the GOT for this PLT entry. */
9080 rel
.r_offset
= plt_address
+ 8;
9081 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9082 rel
.r_addend
= got_offset
;
9083 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9084 loc
+= RELOC_SIZE (htab
);
9086 /* Create the R_ARM_ABS32 relocation referencing the
9087 beginning of the PLT for this GOT entry. */
9088 rel
.r_offset
= got_address
;
9089 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
9091 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9095 bfd_signed_vma thumb_refs
;
9096 /* Calculate the displacement between the PLT slot and the
9097 entry in the GOT. The eight-byte offset accounts for the
9098 value produced by adding to pc in the first instruction
9100 got_displacement
= got_address
- (plt_address
+ 8);
9102 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
9104 thumb_refs
= eh
->plt_thumb_refcount
;
9106 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
9110 put_thumb_insn (htab
, output_bfd
,
9111 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
9112 put_thumb_insn (htab
, output_bfd
,
9113 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
9116 put_arm_insn (htab
, output_bfd
,
9117 elf32_arm_plt_entry
[0]
9118 | ((got_displacement
& 0x0ff00000) >> 20),
9120 put_arm_insn (htab
, output_bfd
,
9121 elf32_arm_plt_entry
[1]
9122 | ((got_displacement
& 0x000ff000) >> 12),
9124 put_arm_insn (htab
, output_bfd
,
9125 elf32_arm_plt_entry
[2]
9126 | (got_displacement
& 0x00000fff),
9128 #ifdef FOUR_WORD_PLT
9129 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
9133 /* Fill in the entry in the global offset table. */
9134 bfd_put_32 (output_bfd
,
9135 (splt
->output_section
->vma
9136 + splt
->output_offset
),
9137 sgot
->contents
+ got_offset
);
9139 /* Fill in the entry in the .rel(a).plt section. */
9141 rel
.r_offset
= got_address
;
9142 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
9145 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
9146 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9148 if (!h
->def_regular
)
9150 /* Mark the symbol as undefined, rather than as defined in
9151 the .plt section. Leave the value alone. */
9152 sym
->st_shndx
= SHN_UNDEF
;
9153 /* If the symbol is weak, we do need to clear the value.
9154 Otherwise, the PLT entry would provide a definition for
9155 the symbol even if the symbol wasn't defined anywhere,
9156 and so the symbol would never be NULL. */
9157 if (!h
->ref_regular_nonweak
)
9162 if (h
->got
.offset
!= (bfd_vma
) -1
9163 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
9164 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
9168 Elf_Internal_Rela rel
;
9172 /* This symbol has an entry in the global offset table. Set it
9174 sgot
= bfd_get_section_by_name (dynobj
, ".got");
9175 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
9176 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
9178 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
9180 rel
.r_offset
= (sgot
->output_section
->vma
9181 + sgot
->output_offset
9184 /* If this is a static link, or it is a -Bsymbolic link and the
9185 symbol is defined locally or was forced to be local because
9186 of a version file, we just want to emit a RELATIVE reloc.
9187 The entry in the global offset table will already have been
9188 initialized in the relocate_section function. */
9190 && SYMBOL_REFERENCES_LOCAL (info
, h
))
9192 BFD_ASSERT((h
->got
.offset
& 1) != 0);
9193 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
9196 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
9197 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
9202 BFD_ASSERT((h
->got
.offset
& 1) == 0);
9203 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
9204 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
9207 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
9208 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9214 Elf_Internal_Rela rel
;
9217 /* This symbol needs a copy reloc. Set it up. */
9218 BFD_ASSERT (h
->dynindx
!= -1
9219 && (h
->root
.type
== bfd_link_hash_defined
9220 || h
->root
.type
== bfd_link_hash_defweak
));
9222 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
9223 RELOC_SECTION (htab
, ".bss"));
9224 BFD_ASSERT (s
!= NULL
);
9227 rel
.r_offset
= (h
->root
.u
.def
.value
9228 + h
->root
.u
.def
.section
->output_section
->vma
9229 + h
->root
.u
.def
.section
->output_offset
);
9230 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
9231 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
9232 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9235 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
9236 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
9237 to the ".got" section. */
9238 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
9239 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
9240 sym
->st_shndx
= SHN_ABS
;
9245 /* Finish up the dynamic sections. */
9248 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
9254 dynobj
= elf_hash_table (info
)->dynobj
;
9256 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
9257 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
9258 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
9260 if (elf_hash_table (info
)->dynamic_sections_created
)
9263 Elf32_External_Dyn
*dyncon
, *dynconend
;
9264 struct elf32_arm_link_hash_table
*htab
;
9266 htab
= elf32_arm_hash_table (info
);
9267 splt
= bfd_get_section_by_name (dynobj
, ".plt");
9268 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
9270 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
9271 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9273 for (; dyncon
< dynconend
; dyncon
++)
9275 Elf_Internal_Dyn dyn
;
9279 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9287 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
9288 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9293 goto get_vma_if_bpabi
;
9296 goto get_vma_if_bpabi
;
9299 goto get_vma_if_bpabi
;
9301 name
= ".gnu.version";
9302 goto get_vma_if_bpabi
;
9304 name
= ".gnu.version_d";
9305 goto get_vma_if_bpabi
;
9307 name
= ".gnu.version_r";
9308 goto get_vma_if_bpabi
;
9314 name
= RELOC_SECTION (htab
, ".plt");
9316 s
= bfd_get_section_by_name (output_bfd
, name
);
9317 BFD_ASSERT (s
!= NULL
);
9318 if (!htab
->symbian_p
)
9319 dyn
.d_un
.d_ptr
= s
->vma
;
9321 /* In the BPABI, tags in the PT_DYNAMIC section point
9322 at the file offset, not the memory address, for the
9323 convenience of the post linker. */
9324 dyn
.d_un
.d_ptr
= s
->filepos
;
9325 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9329 if (htab
->symbian_p
)
9334 s
= bfd_get_section_by_name (output_bfd
,
9335 RELOC_SECTION (htab
, ".plt"));
9336 BFD_ASSERT (s
!= NULL
);
9337 dyn
.d_un
.d_val
= s
->size
;
9338 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9343 if (!htab
->symbian_p
)
9345 /* My reading of the SVR4 ABI indicates that the
9346 procedure linkage table relocs (DT_JMPREL) should be
9347 included in the overall relocs (DT_REL). This is
9348 what Solaris does. However, UnixWare can not handle
9349 that case. Therefore, we override the DT_RELSZ entry
9350 here to make it not include the JMPREL relocs. Since
9351 the linker script arranges for .rel(a).plt to follow all
9352 other relocation sections, we don't have to worry
9353 about changing the DT_REL entry. */
9354 s
= bfd_get_section_by_name (output_bfd
,
9355 RELOC_SECTION (htab
, ".plt"));
9357 dyn
.d_un
.d_val
-= s
->size
;
9358 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9365 /* In the BPABI, the DT_REL tag must point at the file
9366 offset, not the VMA, of the first relocation
9367 section. So, we use code similar to that in
9368 elflink.c, but do not check for SHF_ALLOC on the
9369 relcoation section, since relocations sections are
9370 never allocated under the BPABI. The comments above
9371 about Unixware notwithstanding, we include all of the
9372 relocations here. */
9373 if (htab
->symbian_p
)
9376 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
9377 ? SHT_REL
: SHT_RELA
);
9379 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
9381 Elf_Internal_Shdr
*hdr
9382 = elf_elfsections (output_bfd
)[i
];
9383 if (hdr
->sh_type
== type
)
9385 if (dyn
.d_tag
== DT_RELSZ
9386 || dyn
.d_tag
== DT_RELASZ
)
9387 dyn
.d_un
.d_val
+= hdr
->sh_size
;
9388 else if ((ufile_ptr
) hdr
->sh_offset
9389 <= dyn
.d_un
.d_val
- 1)
9390 dyn
.d_un
.d_val
= hdr
->sh_offset
;
9393 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9397 /* Set the bottom bit of DT_INIT/FINI if the
9398 corresponding function is Thumb. */
9400 name
= info
->init_function
;
9403 name
= info
->fini_function
;
9405 /* If it wasn't set by elf_bfd_final_link
9406 then there is nothing to adjust. */
9407 if (dyn
.d_un
.d_val
!= 0)
9409 struct elf_link_hash_entry
* eh
;
9411 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
9412 FALSE
, FALSE
, TRUE
);
9413 if (eh
!= (struct elf_link_hash_entry
*) NULL
9414 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
9416 dyn
.d_un
.d_val
|= 1;
9417 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9424 /* Fill in the first entry in the procedure linkage table. */
9425 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
9427 const bfd_vma
*plt0_entry
;
9428 bfd_vma got_address
, plt_address
, got_displacement
;
9430 /* Calculate the addresses of the GOT and PLT. */
9431 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
9432 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
9434 if (htab
->vxworks_p
)
9436 /* The VxWorks GOT is relocated by the dynamic linker.
9437 Therefore, we must emit relocations rather than simply
9438 computing the values now. */
9439 Elf_Internal_Rela rel
;
9441 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
9442 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
9443 splt
->contents
+ 0);
9444 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
9445 splt
->contents
+ 4);
9446 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
9447 splt
->contents
+ 8);
9448 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
9450 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
9451 rel
.r_offset
= plt_address
+ 12;
9452 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9454 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
9455 htab
->srelplt2
->contents
);
9459 got_displacement
= got_address
- (plt_address
+ 16);
9461 plt0_entry
= elf32_arm_plt0_entry
;
9462 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
9463 splt
->contents
+ 0);
9464 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
9465 splt
->contents
+ 4);
9466 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
9467 splt
->contents
+ 8);
9468 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
9469 splt
->contents
+ 12);
9471 #ifdef FOUR_WORD_PLT
9472 /* The displacement value goes in the otherwise-unused
9473 last word of the second entry. */
9474 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
9476 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
9481 /* UnixWare sets the entsize of .plt to 4, although that doesn't
9482 really seem like the right value. */
9483 if (splt
->output_section
->owner
== output_bfd
)
9484 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
9486 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
9488 /* Correct the .rel(a).plt.unloaded relocations. They will have
9489 incorrect symbol indexes. */
9493 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
9494 / htab
->plt_entry_size
);
9495 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
9497 for (; num_plts
; num_plts
--)
9499 Elf_Internal_Rela rel
;
9501 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
9502 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9503 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
9504 p
+= RELOC_SIZE (htab
);
9506 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
9507 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
9508 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
9509 p
+= RELOC_SIZE (htab
);
9514 /* Fill in the first three entries in the global offset table. */
9520 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
9522 bfd_put_32 (output_bfd
,
9523 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
9525 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
9526 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
9529 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
9536 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
9538 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
9539 struct elf32_arm_link_hash_table
*globals
;
9541 i_ehdrp
= elf_elfheader (abfd
);
9543 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
9544 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
9546 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
9547 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
9551 globals
= elf32_arm_hash_table (link_info
);
9552 if (globals
->byteswap_code
)
9553 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
9557 static enum elf_reloc_type_class
9558 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
9560 switch ((int) ELF32_R_TYPE (rela
->r_info
))
9562 case R_ARM_RELATIVE
:
9563 return reloc_class_relative
;
9564 case R_ARM_JUMP_SLOT
:
9565 return reloc_class_plt
;
9567 return reloc_class_copy
;
9569 return reloc_class_normal
;
9573 /* Set the right machine number for an Arm ELF file. */
9576 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
9578 if (hdr
->sh_type
== SHT_NOTE
)
9579 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
9585 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
9587 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
9590 /* Return TRUE if this is an unwinding table entry. */
9593 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
9595 return (CONST_STRNEQ (name
, ELF_STRING_ARM_unwind
)
9596 || CONST_STRNEQ (name
, ELF_STRING_ARM_unwind_once
));
9600 /* Set the type and flags for an ARM section. We do this by
9601 the section name, which is a hack, but ought to work. */
9604 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
9608 name
= bfd_get_section_name (abfd
, sec
);
9610 if (is_arm_elf_unwind_section_name (abfd
, name
))
9612 hdr
->sh_type
= SHT_ARM_EXIDX
;
9613 hdr
->sh_flags
|= SHF_LINK_ORDER
;
9618 /* Handle an ARM specific section when reading an object file. This is
9619 called when bfd_section_from_shdr finds a section with an unknown
9623 elf32_arm_section_from_shdr (bfd
*abfd
,
9624 Elf_Internal_Shdr
* hdr
,
9628 /* There ought to be a place to keep ELF backend specific flags, but
9629 at the moment there isn't one. We just keep track of the
9630 sections by their name, instead. Fortunately, the ABI gives
9631 names for all the ARM specific sections, so we will probably get
9633 switch (hdr
->sh_type
)
9636 case SHT_ARM_PREEMPTMAP
:
9637 case SHT_ARM_ATTRIBUTES
:
9644 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
9650 /* A structure used to record a list of sections, independently
9651 of the next and prev fields in the asection structure. */
9652 typedef struct section_list
9655 struct section_list
* next
;
9656 struct section_list
* prev
;
9660 /* Unfortunately we need to keep a list of sections for which
9661 an _arm_elf_section_data structure has been allocated. This
9662 is because it is possible for functions like elf32_arm_write_section
9663 to be called on a section which has had an elf_data_structure
9664 allocated for it (and so the used_by_bfd field is valid) but
9665 for which the ARM extended version of this structure - the
9666 _arm_elf_section_data structure - has not been allocated. */
9667 static section_list
* sections_with_arm_elf_section_data
= NULL
;
9670 record_section_with_arm_elf_section_data (asection
* sec
)
9672 struct section_list
* entry
;
9674 entry
= bfd_malloc (sizeof (* entry
));
9678 entry
->next
= sections_with_arm_elf_section_data
;
9680 if (entry
->next
!= NULL
)
9681 entry
->next
->prev
= entry
;
9682 sections_with_arm_elf_section_data
= entry
;
9685 static struct section_list
*
9686 find_arm_elf_section_entry (asection
* sec
)
9688 struct section_list
* entry
;
9689 static struct section_list
* last_entry
= NULL
;
9691 /* This is a short cut for the typical case where the sections are added
9692 to the sections_with_arm_elf_section_data list in forward order and
9693 then looked up here in backwards order. This makes a real difference
9694 to the ld-srec/sec64k.exp linker test. */
9695 entry
= sections_with_arm_elf_section_data
;
9696 if (last_entry
!= NULL
)
9698 if (last_entry
->sec
== sec
)
9700 else if (last_entry
->next
!= NULL
9701 && last_entry
->next
->sec
== sec
)
9702 entry
= last_entry
->next
;
9705 for (; entry
; entry
= entry
->next
)
9706 if (entry
->sec
== sec
)
9710 /* Record the entry prior to this one - it is the entry we are most
9711 likely to want to locate next time. Also this way if we have been
9712 called from unrecord_section_with_arm_elf_section_data() we will not
9713 be caching a pointer that is about to be freed. */
9714 last_entry
= entry
->prev
;
9719 static _arm_elf_section_data
*
9720 get_arm_elf_section_data (asection
* sec
)
9722 struct section_list
* entry
;
9724 entry
= find_arm_elf_section_entry (sec
);
9727 return elf32_arm_section_data (entry
->sec
);
9733 unrecord_section_with_arm_elf_section_data (asection
* sec
)
9735 struct section_list
* entry
;
9737 entry
= find_arm_elf_section_entry (sec
);
9741 if (entry
->prev
!= NULL
)
9742 entry
->prev
->next
= entry
->next
;
9743 if (entry
->next
!= NULL
)
9744 entry
->next
->prev
= entry
->prev
;
9745 if (entry
== sections_with_arm_elf_section_data
)
9746 sections_with_arm_elf_section_data
= entry
->next
;
9755 struct bfd_link_info
*info
;
9758 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
9759 asection
*, struct elf_link_hash_entry
*);
9760 } output_arch_syminfo
;
9762 enum map_symbol_type
9770 /* Output a single PLT mapping symbol. */
9773 elf32_arm_ouput_plt_map_sym (output_arch_syminfo
*osi
,
9774 enum map_symbol_type type
,
9777 static const char *names
[3] = {"$a", "$t", "$d"};
9778 struct elf32_arm_link_hash_table
*htab
;
9779 Elf_Internal_Sym sym
;
9781 htab
= elf32_arm_hash_table (osi
->info
);
9782 sym
.st_value
= osi
->sec
->output_section
->vma
9783 + osi
->sec
->output_offset
9787 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
9788 sym
.st_shndx
= osi
->sec_shndx
;
9789 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
))
9795 /* Output mapping symbols for PLT entries associated with H. */
9798 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
9800 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
9801 struct elf32_arm_link_hash_table
*htab
;
9802 struct elf32_arm_link_hash_entry
*eh
;
9805 htab
= elf32_arm_hash_table (osi
->info
);
9807 if (h
->root
.type
== bfd_link_hash_indirect
)
9810 if (h
->root
.type
== bfd_link_hash_warning
)
9811 /* When warning symbols are created, they **replace** the "real"
9812 entry in the hash table, thus we never get to see the real
9813 symbol in a hash traversal. So look at it now. */
9814 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9816 if (h
->plt
.offset
== (bfd_vma
) -1)
9819 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9820 addr
= h
->plt
.offset
;
9821 if (htab
->symbian_p
)
9823 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9825 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
9828 else if (htab
->vxworks_p
)
9830 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9832 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
9834 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
9836 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
9841 bfd_signed_vma thumb_refs
;
9843 thumb_refs
= eh
->plt_thumb_refcount
;
9845 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
9849 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
9852 #ifdef FOUR_WORD_PLT
9853 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9855 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
9858 /* A three-word PLT with no Thumb thunk contains only Arm code,
9859 so only need to output a mapping symbol for the first PLT entry and
9860 entries with thumb thunks. */
9861 if (thumb_refs
> 0 || addr
== 20)
9863 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9873 /* Output mapping symbols for linker generated sections. */
9876 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
9877 struct bfd_link_info
*info
,
9878 void *finfo
, bfd_boolean (*func
) (void *, const char *,
9881 struct elf_link_hash_entry
*))
9883 output_arch_syminfo osi
;
9884 struct elf32_arm_link_hash_table
*htab
;
9888 htab
= elf32_arm_hash_table (info
);
9889 check_use_blx(htab
);
9895 /* ARM->Thumb glue. */
9896 if (htab
->arm_glue_size
> 0)
9898 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
9899 ARM2THUMB_GLUE_SECTION_NAME
);
9901 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
9902 (output_bfd
, osi
.sec
->output_section
);
9903 if (info
->shared
|| htab
->root
.is_relocatable_executable
9904 || htab
->pic_veneer
)
9905 size
= ARM2THUMB_PIC_GLUE_SIZE
;
9906 else if (htab
->use_blx
)
9907 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
9909 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
9911 for (offset
= 0; offset
< htab
->arm_glue_size
; offset
+= size
)
9913 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, offset
);
9914 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, offset
+ size
- 4);
9918 /* Thumb->ARM glue. */
9919 if (htab
->thumb_glue_size
> 0)
9921 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
9922 THUMB2ARM_GLUE_SECTION_NAME
);
9924 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
9925 (output_bfd
, osi
.sec
->output_section
);
9926 size
= THUMB2ARM_GLUE_SIZE
;
9928 for (offset
= 0; offset
< htab
->thumb_glue_size
; offset
+= size
)
9930 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_THUMB
, offset
);
9931 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, offset
+ 4);
9935 /* ARMv4 BX veneers. */
9936 if (htab
->bx_glue_size
> 0)
9938 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
9939 ARM_BX_GLUE_SECTION_NAME
);
9941 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
9942 (output_bfd
, osi
.sec
->output_section
);
9944 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0);
9947 /* Finally, output mapping symbols for the PLT. */
9948 if (!htab
->splt
|| htab
->splt
->size
== 0)
9951 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
9952 htab
->splt
->output_section
);
9953 osi
.sec
= htab
->splt
;
9954 /* Output mapping symbols for the plt header. SymbianOS does not have a
9956 if (htab
->vxworks_p
)
9958 /* VxWorks shared libraries have no PLT header. */
9961 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
9963 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 12))
9967 else if (!htab
->symbian_p
)
9969 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
9971 #ifndef FOUR_WORD_PLT
9972 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 16))
9977 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
9981 /* Allocate target specific section data. */
9984 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
9986 if (!sec
->used_by_bfd
)
9988 _arm_elf_section_data
*sdata
;
9989 bfd_size_type amt
= sizeof (*sdata
);
9991 sdata
= bfd_zalloc (abfd
, amt
);
9994 sec
->used_by_bfd
= sdata
;
9997 record_section_with_arm_elf_section_data (sec
);
9999 return _bfd_elf_new_section_hook (abfd
, sec
);
10003 /* Used to order a list of mapping symbols by address. */
10006 elf32_arm_compare_mapping (const void * a
, const void * b
)
10008 const elf32_arm_section_map
*amap
= (const elf32_arm_section_map
*) a
;
10009 const elf32_arm_section_map
*bmap
= (const elf32_arm_section_map
*) b
;
10011 if (amap
->vma
> bmap
->vma
)
10013 else if (amap
->vma
< bmap
->vma
)
10015 else if (amap
->type
> bmap
->type
)
10016 /* Ensure results do not depend on the host qsort for objects with
10017 multiple mapping symbols at the same address by sorting on type
10020 else if (amap
->type
< bmap
->type
)
10027 /* Do code byteswapping. Return FALSE afterwards so that the section is
10028 written out as normal. */
10031 elf32_arm_write_section (bfd
*output_bfd
,
10032 struct bfd_link_info
*link_info
, asection
*sec
,
10033 bfd_byte
*contents
)
10035 int mapcount
, errcount
;
10036 _arm_elf_section_data
*arm_data
;
10037 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
10038 elf32_arm_section_map
*map
;
10039 elf32_vfp11_erratum_list
*errnode
;
10042 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
10046 /* If this section has not been allocated an _arm_elf_section_data
10047 structure then we cannot record anything. */
10048 arm_data
= get_arm_elf_section_data (sec
);
10049 if (arm_data
== NULL
)
10052 mapcount
= arm_data
->mapcount
;
10053 map
= arm_data
->map
;
10054 errcount
= arm_data
->erratumcount
;
10058 unsigned int endianflip
= bfd_big_endian (output_bfd
) ? 3 : 0;
10060 for (errnode
= arm_data
->erratumlist
; errnode
!= 0;
10061 errnode
= errnode
->next
)
10063 bfd_vma index
= errnode
->vma
- offset
;
10065 switch (errnode
->type
)
10067 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
10069 bfd_vma branch_to_veneer
;
10070 /* Original condition code of instruction, plus bit mask for
10071 ARM B instruction. */
10072 unsigned int insn
= (errnode
->u
.b
.vfp_insn
& 0xf0000000)
10075 /* The instruction is before the label. */
10078 /* Above offset included in -4 below. */
10079 branch_to_veneer
= errnode
->u
.b
.veneer
->vma
10080 - errnode
->vma
- 4;
10082 if ((signed) branch_to_veneer
< -(1 << 25)
10083 || (signed) branch_to_veneer
>= (1 << 25))
10084 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
10085 "range"), output_bfd
);
10087 insn
|= (branch_to_veneer
>> 2) & 0xffffff;
10088 contents
[endianflip
^ index
] = insn
& 0xff;
10089 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
10090 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
10091 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
10095 case VFP11_ERRATUM_ARM_VENEER
:
10097 bfd_vma branch_from_veneer
;
10100 /* Take size of veneer into account. */
10101 branch_from_veneer
= errnode
->u
.v
.branch
->vma
10102 - errnode
->vma
- 12;
10104 if ((signed) branch_from_veneer
< -(1 << 25)
10105 || (signed) branch_from_veneer
>= (1 << 25))
10106 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
10107 "range"), output_bfd
);
10109 /* Original instruction. */
10110 insn
= errnode
->u
.v
.branch
->u
.b
.vfp_insn
;
10111 contents
[endianflip
^ index
] = insn
& 0xff;
10112 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
10113 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
10114 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
10116 /* Branch back to insn after original insn. */
10117 insn
= 0xea000000 | ((branch_from_veneer
>> 2) & 0xffffff);
10118 contents
[endianflip
^ (index
+ 4)] = insn
& 0xff;
10119 contents
[endianflip
^ (index
+ 5)] = (insn
>> 8) & 0xff;
10120 contents
[endianflip
^ (index
+ 6)] = (insn
>> 16) & 0xff;
10121 contents
[endianflip
^ (index
+ 7)] = (insn
>> 24) & 0xff;
10134 if (globals
->byteswap_code
)
10136 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
10139 for (i
= 0; i
< mapcount
; i
++)
10141 if (i
== mapcount
- 1)
10144 end
= map
[i
+ 1].vma
;
10146 switch (map
[i
].type
)
10149 /* Byte swap code words. */
10150 while (ptr
+ 3 < end
)
10152 tmp
= contents
[ptr
];
10153 contents
[ptr
] = contents
[ptr
+ 3];
10154 contents
[ptr
+ 3] = tmp
;
10155 tmp
= contents
[ptr
+ 1];
10156 contents
[ptr
+ 1] = contents
[ptr
+ 2];
10157 contents
[ptr
+ 2] = tmp
;
10163 /* Byte swap code halfwords. */
10164 while (ptr
+ 1 < end
)
10166 tmp
= contents
[ptr
];
10167 contents
[ptr
] = contents
[ptr
+ 1];
10168 contents
[ptr
+ 1] = tmp
;
10174 /* Leave data alone. */
10182 arm_data
->mapcount
= 0;
10183 arm_data
->mapsize
= 0;
10184 arm_data
->map
= NULL
;
10185 unrecord_section_with_arm_elf_section_data (sec
);
10191 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
10193 void * ignore ATTRIBUTE_UNUSED
)
10195 unrecord_section_with_arm_elf_section_data (sec
);
10199 elf32_arm_close_and_cleanup (bfd
* abfd
)
10201 if (abfd
->sections
)
10202 bfd_map_over_sections (abfd
,
10203 unrecord_section_via_map_over_sections
,
10206 return _bfd_elf_close_and_cleanup (abfd
);
10210 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
10212 if (abfd
->sections
)
10213 bfd_map_over_sections (abfd
,
10214 unrecord_section_via_map_over_sections
,
10217 return _bfd_free_cached_info (abfd
);
10220 /* Display STT_ARM_TFUNC symbols as functions. */
10223 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
10226 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
10228 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
10229 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
10233 /* Mangle thumb function symbols as we read them in. */
10236 elf32_arm_swap_symbol_in (bfd
* abfd
,
10239 Elf_Internal_Sym
*dst
)
10241 if (!bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
10244 /* New EABI objects mark thumb function symbols by setting the low bit of
10245 the address. Turn these into STT_ARM_TFUNC. */
10246 if (ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
10247 && (dst
->st_value
& 1))
10249 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
10250 dst
->st_value
&= ~(bfd_vma
) 1;
10256 /* Mangle thumb function symbols as we write them out. */
10259 elf32_arm_swap_symbol_out (bfd
*abfd
,
10260 const Elf_Internal_Sym
*src
,
10264 Elf_Internal_Sym newsym
;
10266 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
10267 of the address set, as per the new EABI. We do this unconditionally
10268 because objcopy does not set the elf header flags until after
10269 it writes out the symbol table. */
10270 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
10273 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
10274 if (newsym
.st_shndx
!= SHN_UNDEF
)
10276 /* Do this only for defined symbols. At link type, the static
10277 linker will simulate the work of dynamic linker of resolving
10278 symbols and will carry over the thumbness of found symbols to
10279 the output symbol table. It's not clear how it happens, but
10280 the thumbness of undefined symbols can well be different at
10281 runtime, and writing '1' for them will be confusing for users
10282 and possibly for dynamic linker itself.
10284 newsym
.st_value
|= 1;
10289 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
10292 /* Add the PT_ARM_EXIDX program header. */
10295 elf32_arm_modify_segment_map (bfd
*abfd
,
10296 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
10298 struct elf_segment_map
*m
;
10301 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
10302 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
10304 /* If there is already a PT_ARM_EXIDX header, then we do not
10305 want to add another one. This situation arises when running
10306 "strip"; the input binary already has the header. */
10307 m
= elf_tdata (abfd
)->segment_map
;
10308 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
10312 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
10315 m
->p_type
= PT_ARM_EXIDX
;
10317 m
->sections
[0] = sec
;
10319 m
->next
= elf_tdata (abfd
)->segment_map
;
10320 elf_tdata (abfd
)->segment_map
= m
;
10327 /* We may add a PT_ARM_EXIDX program header. */
10330 elf32_arm_additional_program_headers (bfd
*abfd
,
10331 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
10335 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
10336 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
10342 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
10344 elf32_arm_is_function_type (unsigned int type
)
10346 return (type
== STT_FUNC
) || (type
== STT_ARM_TFUNC
);
10349 /* We use this to override swap_symbol_in and swap_symbol_out. */
10350 const struct elf_size_info elf32_arm_size_info
= {
10351 sizeof (Elf32_External_Ehdr
),
10352 sizeof (Elf32_External_Phdr
),
10353 sizeof (Elf32_External_Shdr
),
10354 sizeof (Elf32_External_Rel
),
10355 sizeof (Elf32_External_Rela
),
10356 sizeof (Elf32_External_Sym
),
10357 sizeof (Elf32_External_Dyn
),
10358 sizeof (Elf_External_Note
),
10362 ELFCLASS32
, EV_CURRENT
,
10363 bfd_elf32_write_out_phdrs
,
10364 bfd_elf32_write_shdrs_and_ehdr
,
10365 bfd_elf32_checksum_contents
,
10366 bfd_elf32_write_relocs
,
10367 elf32_arm_swap_symbol_in
,
10368 elf32_arm_swap_symbol_out
,
10369 bfd_elf32_slurp_reloc_table
,
10370 bfd_elf32_slurp_symbol_table
,
10371 bfd_elf32_swap_dyn_in
,
10372 bfd_elf32_swap_dyn_out
,
10373 bfd_elf32_swap_reloc_in
,
10374 bfd_elf32_swap_reloc_out
,
10375 bfd_elf32_swap_reloca_in
,
10376 bfd_elf32_swap_reloca_out
10379 #define ELF_ARCH bfd_arch_arm
10380 #define ELF_MACHINE_CODE EM_ARM
10381 #ifdef __QNXTARGET__
10382 #define ELF_MAXPAGESIZE 0x1000
10384 #define ELF_MAXPAGESIZE 0x8000
10386 #define ELF_MINPAGESIZE 0x1000
10387 #define ELF_COMMONPAGESIZE 0x1000
10389 #define bfd_elf32_mkobject elf32_arm_mkobject
10391 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
10392 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
10393 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
10394 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
10395 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
10396 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
10397 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
10398 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
10399 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
10400 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
10401 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
10402 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
10403 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
10405 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
10406 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
10407 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
10408 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
10409 #define elf_backend_check_relocs elf32_arm_check_relocs
10410 #define elf_backend_relocate_section elf32_arm_relocate_section
10411 #define elf_backend_write_section elf32_arm_write_section
10412 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
10413 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
10414 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
10415 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
10416 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
10417 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
10418 #define elf_backend_post_process_headers elf32_arm_post_process_headers
10419 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
10420 #define elf_backend_object_p elf32_arm_object_p
10421 #define elf_backend_section_flags elf32_arm_section_flags
10422 #define elf_backend_fake_sections elf32_arm_fake_sections
10423 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
10424 #define elf_backend_final_write_processing elf32_arm_final_write_processing
10425 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
10426 #define elf_backend_symbol_processing elf32_arm_symbol_processing
10427 #define elf_backend_size_info elf32_arm_size_info
10428 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
10429 #define elf_backend_additional_program_headers \
10430 elf32_arm_additional_program_headers
10431 #define elf_backend_output_arch_local_syms \
10432 elf32_arm_output_arch_local_syms
10433 #define elf_backend_begin_write_processing \
10434 elf32_arm_begin_write_processing
10435 #define elf_backend_is_function_type elf32_arm_is_function_type
10437 #define elf_backend_can_refcount 1
10438 #define elf_backend_can_gc_sections 1
10439 #define elf_backend_plt_readonly 1
10440 #define elf_backend_want_got_plt 1
10441 #define elf_backend_want_plt_sym 0
10442 #define elf_backend_may_use_rel_p 1
10443 #define elf_backend_may_use_rela_p 0
10444 #define elf_backend_default_use_rela_p 0
10446 #define elf_backend_got_header_size 12
10448 #undef elf_backend_obj_attrs_vendor
10449 #define elf_backend_obj_attrs_vendor "aeabi"
10450 #undef elf_backend_obj_attrs_section
10451 #define elf_backend_obj_attrs_section ".ARM.attributes"
10452 #undef elf_backend_obj_attrs_arg_type
10453 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
10454 #undef elf_backend_obj_attrs_section_type
10455 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
10457 #include "elf32-target.h"
10459 /* VxWorks Targets */
10461 #undef TARGET_LITTLE_SYM
10462 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
10463 #undef TARGET_LITTLE_NAME
10464 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
10465 #undef TARGET_BIG_SYM
10466 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
10467 #undef TARGET_BIG_NAME
10468 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
10470 /* Like elf32_arm_link_hash_table_create -- but overrides
10471 appropriately for VxWorks. */
10472 static struct bfd_link_hash_table
*
10473 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
10475 struct bfd_link_hash_table
*ret
;
10477 ret
= elf32_arm_link_hash_table_create (abfd
);
10480 struct elf32_arm_link_hash_table
*htab
10481 = (struct elf32_arm_link_hash_table
*) ret
;
10483 htab
->vxworks_p
= 1;
10489 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10491 elf32_arm_final_write_processing (abfd
, linker
);
10492 elf_vxworks_final_write_processing (abfd
, linker
);
10496 #define elf32_bed elf32_arm_vxworks_bed
10498 #undef bfd_elf32_bfd_link_hash_table_create
10499 #define bfd_elf32_bfd_link_hash_table_create \
10500 elf32_arm_vxworks_link_hash_table_create
10501 #undef elf_backend_add_symbol_hook
10502 #define elf_backend_add_symbol_hook \
10503 elf_vxworks_add_symbol_hook
10504 #undef elf_backend_final_write_processing
10505 #define elf_backend_final_write_processing \
10506 elf32_arm_vxworks_final_write_processing
10507 #undef elf_backend_emit_relocs
10508 #define elf_backend_emit_relocs \
10509 elf_vxworks_emit_relocs
10511 #undef elf_backend_may_use_rel_p
10512 #define elf_backend_may_use_rel_p 0
10513 #undef elf_backend_may_use_rela_p
10514 #define elf_backend_may_use_rela_p 1
10515 #undef elf_backend_default_use_rela_p
10516 #define elf_backend_default_use_rela_p 1
10517 #undef elf_backend_want_plt_sym
10518 #define elf_backend_want_plt_sym 1
10519 #undef ELF_MAXPAGESIZE
10520 #define ELF_MAXPAGESIZE 0x1000
10522 #include "elf32-target.h"
10525 /* Symbian OS Targets */
10527 #undef TARGET_LITTLE_SYM
10528 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
10529 #undef TARGET_LITTLE_NAME
10530 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
10531 #undef TARGET_BIG_SYM
10532 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
10533 #undef TARGET_BIG_NAME
10534 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
10536 /* Like elf32_arm_link_hash_table_create -- but overrides
10537 appropriately for Symbian OS. */
10538 static struct bfd_link_hash_table
*
10539 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
10541 struct bfd_link_hash_table
*ret
;
10543 ret
= elf32_arm_link_hash_table_create (abfd
);
10546 struct elf32_arm_link_hash_table
*htab
10547 = (struct elf32_arm_link_hash_table
*)ret
;
10548 /* There is no PLT header for Symbian OS. */
10549 htab
->plt_header_size
= 0;
10550 /* The PLT entries are each three instructions. */
10551 htab
->plt_entry_size
= 4 * NUM_ELEM (elf32_arm_symbian_plt_entry
);
10552 htab
->symbian_p
= 1;
10553 /* Symbian uses armv5t or above, so use_blx is always true. */
10555 htab
->root
.is_relocatable_executable
= 1;
10560 static const struct bfd_elf_special_section
10561 elf32_arm_symbian_special_sections
[] =
10563 /* In a BPABI executable, the dynamic linking sections do not go in
10564 the loadable read-only segment. The post-linker may wish to
10565 refer to these sections, but they are not part of the final
10567 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC
, 0 },
10568 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB
, 0 },
10569 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM
, 0 },
10570 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS
, 0 },
10571 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH
, 0 },
10572 /* These sections do not need to be writable as the SymbianOS
10573 postlinker will arrange things so that no dynamic relocation is
10575 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
10576 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
10577 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
10578 { NULL
, 0, 0, 0, 0 }
10582 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
10583 struct bfd_link_info
*link_info
)
10585 /* BPABI objects are never loaded directly by an OS kernel; they are
10586 processed by a postlinker first, into an OS-specific format. If
10587 the D_PAGED bit is set on the file, BFD will align segments on
10588 page boundaries, so that an OS can directly map the file. With
10589 BPABI objects, that just results in wasted space. In addition,
10590 because we clear the D_PAGED bit, map_sections_to_segments will
10591 recognize that the program headers should not be mapped into any
10592 loadable segment. */
10593 abfd
->flags
&= ~D_PAGED
;
10594 elf32_arm_begin_write_processing(abfd
, link_info
);
10598 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
10599 struct bfd_link_info
*info
)
10601 struct elf_segment_map
*m
;
10604 /* BPABI shared libraries and executables should have a PT_DYNAMIC
10605 segment. However, because the .dynamic section is not marked
10606 with SEC_LOAD, the generic ELF code will not create such a
10608 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
10611 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
10612 if (m
->p_type
== PT_DYNAMIC
)
10617 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
10618 m
->next
= elf_tdata (abfd
)->segment_map
;
10619 elf_tdata (abfd
)->segment_map
= m
;
10623 /* Also call the generic arm routine. */
10624 return elf32_arm_modify_segment_map (abfd
, info
);
10628 #define elf32_bed elf32_arm_symbian_bed
10630 /* The dynamic sections are not allocated on SymbianOS; the postlinker
10631 will process them and then discard them. */
10632 #undef ELF_DYNAMIC_SEC_FLAGS
10633 #define ELF_DYNAMIC_SEC_FLAGS \
10634 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
10636 #undef bfd_elf32_bfd_link_hash_table_create
10637 #define bfd_elf32_bfd_link_hash_table_create \
10638 elf32_arm_symbian_link_hash_table_create
10639 #undef elf_backend_add_symbol_hook
10641 #undef elf_backend_special_sections
10642 #define elf_backend_special_sections elf32_arm_symbian_special_sections
10644 #undef elf_backend_begin_write_processing
10645 #define elf_backend_begin_write_processing \
10646 elf32_arm_symbian_begin_write_processing
10647 #undef elf_backend_final_write_processing
10648 #define elf_backend_final_write_processing \
10649 elf32_arm_final_write_processing
10650 #undef elf_backend_emit_relocs
10652 #undef elf_backend_modify_segment_map
10653 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
10655 /* There is no .got section for BPABI objects, and hence no header. */
10656 #undef elf_backend_got_header_size
10657 #define elf_backend_got_header_size 0
10659 /* Similarly, there is no .got.plt section. */
10660 #undef elf_backend_want_got_plt
10661 #define elf_backend_want_got_plt 0
10663 #undef elf_backend_may_use_rel_p
10664 #define elf_backend_may_use_rel_p 1
10665 #undef elf_backend_may_use_rela_p
10666 #define elf_backend_may_use_rela_p 0
10667 #undef elf_backend_default_use_rela_p
10668 #define elf_backend_default_use_rela_p 0
10669 #undef elf_backend_want_plt_sym
10670 #define elf_backend_want_plt_sym 0
10671 #undef ELF_MAXPAGESIZE
10672 #define ELF_MAXPAGESIZE 0x8000
10674 #include "elf32-target.h"