1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 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 0x0000ffff, /* src_mask */
700 0x0000ffff, /* 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 0x0000ffff, /* src_mask */
714 0x0000ffff, /* 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 0x0000ffff, /* src_mask */
728 0x0000ffff, /* 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 0x0000ffff, /* src_mask */
742 0x0000ffff, /* 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
}
1779 static reloc_howto_type
*
1780 elf32_arm_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1781 bfd_reloc_code_real_type code
)
1784 for (i
= 0; i
< NUM_ELEM (elf32_arm_reloc_map
); i
++)
1785 if (elf32_arm_reloc_map
[i
].bfd_reloc_val
== code
)
1786 return elf32_arm_howto_from_type (elf32_arm_reloc_map
[i
].elf_reloc_val
);
1791 static reloc_howto_type
*
1792 elf32_arm_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1798 i
< (sizeof (elf32_arm_howto_table_1
)
1799 / sizeof (elf32_arm_howto_table_1
[0]));
1801 if (elf32_arm_howto_table_1
[i
].name
!= NULL
1802 && strcasecmp (elf32_arm_howto_table_1
[i
].name
, r_name
) == 0)
1803 return &elf32_arm_howto_table_1
[i
];
1806 i
< (sizeof (elf32_arm_howto_table_2
)
1807 / sizeof (elf32_arm_howto_table_2
[0]));
1809 if (elf32_arm_howto_table_2
[i
].name
!= NULL
1810 && strcasecmp (elf32_arm_howto_table_2
[i
].name
, r_name
) == 0)
1811 return &elf32_arm_howto_table_2
[i
];
1816 /* Support for core dump NOTE sections */
1818 elf32_arm_nabi_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1823 switch (note
->descsz
)
1828 case 148: /* Linux/ARM 32-bit*/
1830 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1833 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1842 /* Make a ".reg/999" section. */
1843 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1844 size
, note
->descpos
+ offset
);
1848 elf32_arm_nabi_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1850 switch (note
->descsz
)
1855 case 124: /* Linux/ARM elf_prpsinfo */
1856 elf_tdata (abfd
)->core_program
1857 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
1858 elf_tdata (abfd
)->core_command
1859 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
1862 /* Note that for some reason, a spurious space is tacked
1863 onto the end of the args in some (at least one anyway)
1864 implementations, so strip it off if it exists. */
1867 char *command
= elf_tdata (abfd
)->core_command
;
1868 int n
= strlen (command
);
1870 if (0 < n
&& command
[n
- 1] == ' ')
1871 command
[n
- 1] = '\0';
1877 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1878 #define TARGET_LITTLE_NAME "elf32-littlearm"
1879 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1880 #define TARGET_BIG_NAME "elf32-bigarm"
1882 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1883 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1885 typedef unsigned long int insn32
;
1886 typedef unsigned short int insn16
;
1888 /* In lieu of proper flags, assume all EABIv4 or later objects are
1890 #define INTERWORK_FLAG(abfd) \
1891 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1892 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1894 /* The linker script knows the section names for placement.
1895 The entry_names are used to do simple name mangling on the stubs.
1896 Given a function name, and its type, the stub can be found. The
1897 name can be changed. The only requirement is the %s be present. */
1898 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1899 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1901 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1902 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1904 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1905 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1907 /* The name of the dynamic interpreter. This is put in the .interp
1909 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1911 #ifdef FOUR_WORD_PLT
1913 /* The first entry in a procedure linkage table looks like
1914 this. It is set up so that any shared library function that is
1915 called before the relocation has been set up calls the dynamic
1917 static const bfd_vma elf32_arm_plt0_entry
[] =
1919 0xe52de004, /* str lr, [sp, #-4]! */
1920 0xe59fe010, /* ldr lr, [pc, #16] */
1921 0xe08fe00e, /* add lr, pc, lr */
1922 0xe5bef008, /* ldr pc, [lr, #8]! */
1925 /* Subsequent entries in a procedure linkage table look like
1927 static const bfd_vma elf32_arm_plt_entry
[] =
1929 0xe28fc600, /* add ip, pc, #NN */
1930 0xe28cca00, /* add ip, ip, #NN */
1931 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1932 0x00000000, /* unused */
1937 /* The first entry in a procedure linkage table looks like
1938 this. It is set up so that any shared library function that is
1939 called before the relocation has been set up calls the dynamic
1941 static const bfd_vma elf32_arm_plt0_entry
[] =
1943 0xe52de004, /* str lr, [sp, #-4]! */
1944 0xe59fe004, /* ldr lr, [pc, #4] */
1945 0xe08fe00e, /* add lr, pc, lr */
1946 0xe5bef008, /* ldr pc, [lr, #8]! */
1947 0x00000000, /* &GOT[0] - . */
1950 /* Subsequent entries in a procedure linkage table look like
1952 static const bfd_vma elf32_arm_plt_entry
[] =
1954 0xe28fc600, /* add ip, pc, #0xNN00000 */
1955 0xe28cca00, /* add ip, ip, #0xNN000 */
1956 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1961 /* The format of the first entry in the procedure linkage table
1962 for a VxWorks executable. */
1963 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry
[] =
1965 0xe52dc008, /* str ip,[sp,#-8]! */
1966 0xe59fc000, /* ldr ip,[pc] */
1967 0xe59cf008, /* ldr pc,[ip,#8] */
1968 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1971 /* The format of subsequent entries in a VxWorks executable. */
1972 static const bfd_vma elf32_arm_vxworks_exec_plt_entry
[] =
1974 0xe59fc000, /* ldr ip,[pc] */
1975 0xe59cf000, /* ldr pc,[ip] */
1976 0x00000000, /* .long @got */
1977 0xe59fc000, /* ldr ip,[pc] */
1978 0xea000000, /* b _PLT */
1979 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1982 /* The format of entries in a VxWorks shared library. */
1983 static const bfd_vma elf32_arm_vxworks_shared_plt_entry
[] =
1985 0xe59fc000, /* ldr ip,[pc] */
1986 0xe79cf009, /* ldr pc,[ip,r9] */
1987 0x00000000, /* .long @got */
1988 0xe59fc000, /* ldr ip,[pc] */
1989 0xe599f008, /* ldr pc,[r9,#8] */
1990 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1993 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1994 #define PLT_THUMB_STUB_SIZE 4
1995 static const bfd_vma elf32_arm_plt_thumb_stub
[] =
2001 /* The entries in a PLT when using a DLL-based target with multiple
2003 static const bfd_vma elf32_arm_symbian_plt_entry
[] =
2005 0xe51ff004, /* ldr pc, [pc, #-4] */
2006 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2009 /* Used to build a map of a section. This is required for mixed-endian
2012 typedef struct elf32_elf_section_map
2017 elf32_arm_section_map
;
2019 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2023 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
,
2024 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
,
2025 VFP11_ERRATUM_ARM_VENEER
,
2026 VFP11_ERRATUM_THUMB_VENEER
2028 elf32_vfp11_erratum_type
;
2030 typedef struct elf32_vfp11_erratum_list
2032 struct elf32_vfp11_erratum_list
*next
;
2038 struct elf32_vfp11_erratum_list
*veneer
;
2039 unsigned int vfp_insn
;
2043 struct elf32_vfp11_erratum_list
*branch
;
2047 elf32_vfp11_erratum_type type
;
2049 elf32_vfp11_erratum_list
;
2051 typedef struct _arm_elf_section_data
2053 struct bfd_elf_section_data elf
;
2054 unsigned int mapcount
;
2055 unsigned int mapsize
;
2056 elf32_arm_section_map
*map
;
2057 unsigned int erratumcount
;
2058 elf32_vfp11_erratum_list
*erratumlist
;
2060 _arm_elf_section_data
;
2062 #define elf32_arm_section_data(sec) \
2063 ((_arm_elf_section_data *) elf_section_data (sec))
2065 /* The size of the thread control block. */
2068 struct elf32_arm_obj_tdata
2070 struct elf_obj_tdata root
;
2072 /* tls_type for each local got entry. */
2073 char *local_got_tls_type
;
2075 /* Zero to warn when linking objects with incompatible enum sizes. */
2076 int no_enum_size_warning
;
2079 #define elf32_arm_tdata(abfd) \
2080 ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any)
2082 #define elf32_arm_local_got_tls_type(abfd) \
2083 (elf32_arm_tdata (abfd)->local_got_tls_type)
2086 elf32_arm_mkobject (bfd
*abfd
)
2088 if (abfd
->tdata
.any
== NULL
)
2090 bfd_size_type amt
= sizeof (struct elf32_arm_obj_tdata
);
2091 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2092 if (abfd
->tdata
.any
== NULL
)
2095 return bfd_elf_mkobject (abfd
);
2098 /* The ARM linker needs to keep track of the number of relocs that it
2099 decides to copy in check_relocs for each symbol. This is so that
2100 it can discard PC relative relocs if it doesn't need them when
2101 linking with -Bsymbolic. We store the information in a field
2102 extending the regular ELF linker hash table. */
2104 /* This structure keeps track of the number of relocs we have copied
2105 for a given symbol. */
2106 struct elf32_arm_relocs_copied
2109 struct elf32_arm_relocs_copied
* next
;
2110 /* A section in dynobj. */
2112 /* Number of relocs copied in this section. */
2113 bfd_size_type count
;
2114 /* Number of PC-relative relocs copied in this section. */
2115 bfd_size_type pc_count
;
2118 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2120 /* Arm ELF linker hash entry. */
2121 struct elf32_arm_link_hash_entry
2123 struct elf_link_hash_entry root
;
2125 /* Number of PC relative relocs copied for this symbol. */
2126 struct elf32_arm_relocs_copied
* relocs_copied
;
2128 /* We reference count Thumb references to a PLT entry separately,
2129 so that we can emit the Thumb trampoline only if needed. */
2130 bfd_signed_vma plt_thumb_refcount
;
2132 /* Since PLT entries have variable size if the Thumb prologue is
2133 used, we need to record the index into .got.plt instead of
2134 recomputing it from the PLT offset. */
2135 bfd_signed_vma plt_got_offset
;
2137 #define GOT_UNKNOWN 0
2138 #define GOT_NORMAL 1
2139 #define GOT_TLS_GD 2
2140 #define GOT_TLS_IE 4
2141 unsigned char tls_type
;
2143 /* The symbol marking the real symbol location for exported thumb
2144 symbols with Arm stubs. */
2145 struct elf_link_hash_entry
*export_glue
;
2148 /* Traverse an arm ELF linker hash table. */
2149 #define elf32_arm_link_hash_traverse(table, func, info) \
2150 (elf_link_hash_traverse \
2152 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2155 /* Get the ARM elf linker hash table from a link_info structure. */
2156 #define elf32_arm_hash_table(info) \
2157 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2159 /* ARM ELF linker hash table. */
2160 struct elf32_arm_link_hash_table
2162 /* The main hash table. */
2163 struct elf_link_hash_table root
;
2165 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2166 bfd_size_type thumb_glue_size
;
2168 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2169 bfd_size_type arm_glue_size
;
2171 /* The size in bytes of the section containing glue for VFP11 erratum
2173 bfd_size_type vfp11_erratum_glue_size
;
2175 /* An arbitrary input BFD chosen to hold the glue sections. */
2176 bfd
* bfd_of_glue_owner
;
2178 /* Nonzero to output a BE8 image. */
2181 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2182 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2185 /* The relocation to use for R_ARM_TARGET2 relocations. */
2188 /* Nonzero to fix BX instructions for ARMv4 targets. */
2191 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2194 /* What sort of code sequences we should look for which may trigger the
2195 VFP11 denorm erratum. */
2196 bfd_arm_vfp11_fix vfp11_fix
;
2198 /* Global counter for the number of fixes we have emitted. */
2199 int num_vfp11_fixes
;
2201 /* Nonzero to force PIC branch veneers. */
2204 /* The number of bytes in the initial entry in the PLT. */
2205 bfd_size_type plt_header_size
;
2207 /* The number of bytes in the subsequent PLT etries. */
2208 bfd_size_type plt_entry_size
;
2210 /* True if the target system is VxWorks. */
2213 /* True if the target system is Symbian OS. */
2216 /* True if the target uses REL relocations. */
2219 /* Short-cuts to get to dynamic linker sections. */
2228 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2231 /* Data for R_ARM_TLS_LDM32 relocations. */
2233 bfd_signed_vma refcount
;
2237 /* Small local sym to section mapping cache. */
2238 struct sym_sec_cache sym_sec
;
2240 /* For convenience in allocate_dynrelocs. */
2244 /* Create an entry in an ARM ELF linker hash table. */
2246 static struct bfd_hash_entry
*
2247 elf32_arm_link_hash_newfunc (struct bfd_hash_entry
* entry
,
2248 struct bfd_hash_table
* table
,
2249 const char * string
)
2251 struct elf32_arm_link_hash_entry
* ret
=
2252 (struct elf32_arm_link_hash_entry
*) entry
;
2254 /* Allocate the structure if it has not already been allocated by a
2256 if (ret
== (struct elf32_arm_link_hash_entry
*) NULL
)
2257 ret
= bfd_hash_allocate (table
, sizeof (struct elf32_arm_link_hash_entry
));
2259 return (struct bfd_hash_entry
*) ret
;
2261 /* Call the allocation method of the superclass. */
2262 ret
= ((struct elf32_arm_link_hash_entry
*)
2263 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2267 ret
->relocs_copied
= NULL
;
2268 ret
->tls_type
= GOT_UNKNOWN
;
2269 ret
->plt_thumb_refcount
= 0;
2270 ret
->plt_got_offset
= -1;
2271 ret
->export_glue
= NULL
;
2274 return (struct bfd_hash_entry
*) ret
;
2277 /* Return true if NAME is the name of the relocation section associated
2281 reloc_section_p (struct elf32_arm_link_hash_table
*htab
,
2282 const char *name
, asection
*s
)
2285 return CONST_STRNEQ (name
, ".rel") && strcmp (s
->name
, name
+ 4) == 0;
2287 return CONST_STRNEQ (name
, ".rela") && strcmp (s
->name
, name
+ 5) == 0;
2290 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2291 shortcuts to them in our hash table. */
2294 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2296 struct elf32_arm_link_hash_table
*htab
;
2298 htab
= elf32_arm_hash_table (info
);
2299 /* BPABI objects never have a GOT, or associated sections. */
2300 if (htab
->symbian_p
)
2303 if (! _bfd_elf_create_got_section (dynobj
, info
))
2306 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
2307 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
2308 if (!htab
->sgot
|| !htab
->sgotplt
)
2311 htab
->srelgot
= bfd_make_section_with_flags (dynobj
,
2312 RELOC_SECTION (htab
, ".got"),
2313 (SEC_ALLOC
| SEC_LOAD
2316 | SEC_LINKER_CREATED
2318 if (htab
->srelgot
== NULL
2319 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
2324 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2325 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2329 elf32_arm_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
2331 struct elf32_arm_link_hash_table
*htab
;
2333 htab
= elf32_arm_hash_table (info
);
2334 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
2337 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
2340 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
2341 htab
->srelplt
= bfd_get_section_by_name (dynobj
,
2342 RELOC_SECTION (htab
, ".plt"));
2343 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
2345 htab
->srelbss
= bfd_get_section_by_name (dynobj
,
2346 RELOC_SECTION (htab
, ".bss"));
2348 if (htab
->vxworks_p
)
2350 if (!elf_vxworks_create_dynamic_sections (dynobj
, info
, &htab
->srelplt2
))
2355 htab
->plt_header_size
= 0;
2356 htab
->plt_entry_size
2357 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry
);
2361 htab
->plt_header_size
2362 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry
);
2363 htab
->plt_entry_size
2364 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry
);
2371 || (!info
->shared
&& !htab
->srelbss
))
2377 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2380 elf32_arm_copy_indirect_symbol (struct bfd_link_info
*info
,
2381 struct elf_link_hash_entry
*dir
,
2382 struct elf_link_hash_entry
*ind
)
2384 struct elf32_arm_link_hash_entry
*edir
, *eind
;
2386 edir
= (struct elf32_arm_link_hash_entry
*) dir
;
2387 eind
= (struct elf32_arm_link_hash_entry
*) ind
;
2389 if (eind
->relocs_copied
!= NULL
)
2391 if (edir
->relocs_copied
!= NULL
)
2393 struct elf32_arm_relocs_copied
**pp
;
2394 struct elf32_arm_relocs_copied
*p
;
2396 /* Add reloc counts against the indirect sym to the direct sym
2397 list. Merge any entries against the same section. */
2398 for (pp
= &eind
->relocs_copied
; (p
= *pp
) != NULL
; )
2400 struct elf32_arm_relocs_copied
*q
;
2402 for (q
= edir
->relocs_copied
; q
!= NULL
; q
= q
->next
)
2403 if (q
->section
== p
->section
)
2405 q
->pc_count
+= p
->pc_count
;
2406 q
->count
+= p
->count
;
2413 *pp
= edir
->relocs_copied
;
2416 edir
->relocs_copied
= eind
->relocs_copied
;
2417 eind
->relocs_copied
= NULL
;
2420 if (ind
->root
.type
== bfd_link_hash_indirect
)
2422 /* Copy over PLT info. */
2423 edir
->plt_thumb_refcount
+= eind
->plt_thumb_refcount
;
2424 eind
->plt_thumb_refcount
= 0;
2426 if (dir
->got
.refcount
<= 0)
2428 edir
->tls_type
= eind
->tls_type
;
2429 eind
->tls_type
= GOT_UNKNOWN
;
2433 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2436 /* Create an ARM elf linker hash table. */
2438 static struct bfd_link_hash_table
*
2439 elf32_arm_link_hash_table_create (bfd
*abfd
)
2441 struct elf32_arm_link_hash_table
*ret
;
2442 bfd_size_type amt
= sizeof (struct elf32_arm_link_hash_table
);
2444 ret
= bfd_malloc (amt
);
2448 if (!_bfd_elf_link_hash_table_init (& ret
->root
, abfd
,
2449 elf32_arm_link_hash_newfunc
,
2450 sizeof (struct elf32_arm_link_hash_entry
)))
2457 ret
->sgotplt
= NULL
;
2458 ret
->srelgot
= NULL
;
2460 ret
->srelplt
= NULL
;
2461 ret
->sdynbss
= NULL
;
2462 ret
->srelbss
= NULL
;
2463 ret
->srelplt2
= NULL
;
2464 ret
->thumb_glue_size
= 0;
2465 ret
->arm_glue_size
= 0;
2466 ret
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
2467 ret
->vfp11_erratum_glue_size
= 0;
2468 ret
->num_vfp11_fixes
= 0;
2469 ret
->bfd_of_glue_owner
= NULL
;
2470 ret
->byteswap_code
= 0;
2471 ret
->target1_is_rel
= 0;
2472 ret
->target2_reloc
= R_ARM_NONE
;
2473 #ifdef FOUR_WORD_PLT
2474 ret
->plt_header_size
= 16;
2475 ret
->plt_entry_size
= 16;
2477 ret
->plt_header_size
= 20;
2478 ret
->plt_entry_size
= 12;
2485 ret
->sym_sec
.abfd
= NULL
;
2487 ret
->tls_ldm_got
.refcount
= 0;
2489 return &ret
->root
.root
;
2492 /* Locate the Thumb encoded calling stub for NAME. */
2494 static struct elf_link_hash_entry
*
2495 find_thumb_glue (struct bfd_link_info
*link_info
,
2497 char **error_message
)
2500 struct elf_link_hash_entry
*hash
;
2501 struct elf32_arm_link_hash_table
*hash_table
;
2503 /* We need a pointer to the armelf specific hash table. */
2504 hash_table
= elf32_arm_hash_table (link_info
);
2506 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2507 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2509 BFD_ASSERT (tmp_name
);
2511 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2513 hash
= elf_link_hash_lookup
2514 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2517 asprintf (error_message
, _("unable to find THUMB glue '%s' for '%s'"),
2525 /* Locate the ARM encoded calling stub for NAME. */
2527 static struct elf_link_hash_entry
*
2528 find_arm_glue (struct bfd_link_info
*link_info
,
2530 char **error_message
)
2533 struct elf_link_hash_entry
*myh
;
2534 struct elf32_arm_link_hash_table
*hash_table
;
2536 /* We need a pointer to the elfarm specific hash table. */
2537 hash_table
= elf32_arm_hash_table (link_info
);
2539 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2540 + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2542 BFD_ASSERT (tmp_name
);
2544 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2546 myh
= elf_link_hash_lookup
2547 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2550 asprintf (error_message
, _("unable to find ARM glue '%s' for '%s'"),
2558 /* ARM->Thumb glue (static images):
2562 ldr r12, __func_addr
2565 .word func @ behave as if you saw a ARM_32 reloc.
2572 .word func @ behave as if you saw a ARM_32 reloc.
2574 (relocatable images)
2577 ldr r12, __func_offset
2584 #define ARM2THUMB_STATIC_GLUE_SIZE 12
2585 static const insn32 a2t1_ldr_insn
= 0xe59fc000;
2586 static const insn32 a2t2_bx_r12_insn
= 0xe12fff1c;
2587 static const insn32 a2t3_func_addr_insn
= 0x00000001;
2589 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
2590 static const insn32 a2t1v5_ldr_insn
= 0xe51ff004;
2591 static const insn32 a2t2v5_func_addr_insn
= 0x00000001;
2593 #define ARM2THUMB_PIC_GLUE_SIZE 16
2594 static const insn32 a2t1p_ldr_insn
= 0xe59fc004;
2595 static const insn32 a2t2p_add_pc_insn
= 0xe08cc00f;
2596 static const insn32 a2t3p_bx_r12_insn
= 0xe12fff1c;
2598 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
2602 __func_from_thumb: __func_from_thumb:
2604 nop ldr r6, __func_addr
2606 __func_change_to_arm: bx r6
2608 __func_back_to_thumb:
2614 #define THUMB2ARM_GLUE_SIZE 8
2615 static const insn16 t2a1_bx_pc_insn
= 0x4778;
2616 static const insn16 t2a2_noop_insn
= 0x46c0;
2617 static const insn32 t2a3_b_insn
= 0xea000000;
2619 #define VFP11_ERRATUM_VENEER_SIZE 8
2621 #ifndef ELFARM_NABI_C_INCLUDED
2623 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info
* info
)
2627 struct elf32_arm_link_hash_table
* globals
;
2629 globals
= elf32_arm_hash_table (info
);
2631 BFD_ASSERT (globals
!= NULL
);
2633 if (globals
->arm_glue_size
!= 0)
2635 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2637 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
2638 ARM2THUMB_GLUE_SECTION_NAME
);
2640 BFD_ASSERT (s
!= NULL
);
2642 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->arm_glue_size
);
2644 BFD_ASSERT (s
->size
== globals
->arm_glue_size
);
2648 if (globals
->thumb_glue_size
!= 0)
2650 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2652 s
= bfd_get_section_by_name
2653 (globals
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2655 BFD_ASSERT (s
!= NULL
);
2657 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->thumb_glue_size
);
2659 BFD_ASSERT (s
->size
== globals
->thumb_glue_size
);
2663 if (globals
->vfp11_erratum_glue_size
!= 0)
2665 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2667 s
= bfd_get_section_by_name
2668 (globals
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
2670 BFD_ASSERT (s
!= NULL
);
2672 foo
= bfd_alloc (globals
->bfd_of_glue_owner
,
2673 globals
->vfp11_erratum_glue_size
);
2675 BFD_ASSERT (s
->size
== globals
->vfp11_erratum_glue_size
);
2682 /* Allocate space and symbols for calling a Thumb function from Arm mode.
2683 returns the symbol identifying teh stub. */
2684 static struct elf_link_hash_entry
*
2685 record_arm_to_thumb_glue (struct bfd_link_info
* link_info
,
2686 struct elf_link_hash_entry
* h
)
2688 const char * name
= h
->root
.root
.string
;
2691 struct elf_link_hash_entry
* myh
;
2692 struct bfd_link_hash_entry
* bh
;
2693 struct elf32_arm_link_hash_table
* globals
;
2697 globals
= elf32_arm_hash_table (link_info
);
2699 BFD_ASSERT (globals
!= NULL
);
2700 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2702 s
= bfd_get_section_by_name
2703 (globals
->bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
2705 BFD_ASSERT (s
!= NULL
);
2707 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2709 BFD_ASSERT (tmp_name
);
2711 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2713 myh
= elf_link_hash_lookup
2714 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2718 /* We've already seen this guy. */
2723 /* The only trick here is using hash_table->arm_glue_size as the value.
2724 Even though the section isn't allocated yet, this is where we will be
2727 val
= globals
->arm_glue_size
+ 1;
2728 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
2729 tmp_name
, BSF_GLOBAL
, s
, val
,
2730 NULL
, TRUE
, FALSE
, &bh
);
2732 myh
= (struct elf_link_hash_entry
*) bh
;
2733 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2734 myh
->forced_local
= 1;
2738 if (link_info
->shared
|| globals
->root
.is_relocatable_executable
2739 || globals
->pic_veneer
)
2740 size
= ARM2THUMB_PIC_GLUE_SIZE
;
2741 else if (globals
->use_blx
)
2742 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
2744 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
2747 globals
->arm_glue_size
+= size
;
2753 record_thumb_to_arm_glue (struct bfd_link_info
*link_info
,
2754 struct elf_link_hash_entry
*h
)
2756 const char *name
= h
->root
.root
.string
;
2759 struct elf_link_hash_entry
*myh
;
2760 struct bfd_link_hash_entry
*bh
;
2761 struct elf32_arm_link_hash_table
*hash_table
;
2764 hash_table
= elf32_arm_hash_table (link_info
);
2766 BFD_ASSERT (hash_table
!= NULL
);
2767 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
2769 s
= bfd_get_section_by_name
2770 (hash_table
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2772 BFD_ASSERT (s
!= NULL
);
2774 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2775 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2777 BFD_ASSERT (tmp_name
);
2779 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2781 myh
= elf_link_hash_lookup
2782 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2786 /* We've already seen this guy. */
2792 val
= hash_table
->thumb_glue_size
+ 1;
2793 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2794 tmp_name
, BSF_GLOBAL
, s
, val
,
2795 NULL
, TRUE
, FALSE
, &bh
);
2797 /* If we mark it 'Thumb', the disassembler will do a better job. */
2798 myh
= (struct elf_link_hash_entry
*) bh
;
2799 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
2800 myh
->forced_local
= 1;
2804 #define CHANGE_TO_ARM "__%s_change_to_arm"
2805 #define BACK_FROM_ARM "__%s_back_from_arm"
2807 /* Allocate another symbol to mark where we switch to Arm mode. */
2808 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2809 + strlen (CHANGE_TO_ARM
) + 1);
2811 BFD_ASSERT (tmp_name
);
2813 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
2816 val
= hash_table
->thumb_glue_size
+ 4,
2817 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2818 tmp_name
, BSF_LOCAL
, s
, val
,
2819 NULL
, TRUE
, FALSE
, &bh
);
2823 s
->size
+= THUMB2ARM_GLUE_SIZE
;
2824 hash_table
->thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
2830 /* Add an entry to the code/data map for section SEC. */
2833 elf32_arm_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
2835 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
2836 unsigned int newidx
;
2838 if (sec_data
->map
== NULL
)
2840 sec_data
->map
= bfd_malloc (sizeof (elf32_arm_section_map
));
2841 sec_data
->mapcount
= 0;
2842 sec_data
->mapsize
= 1;
2845 newidx
= sec_data
->mapcount
++;
2847 if (sec_data
->mapcount
> sec_data
->mapsize
)
2849 sec_data
->mapsize
*= 2;
2850 sec_data
->map
= bfd_realloc (sec_data
->map
, sec_data
->mapsize
2851 * sizeof (elf32_arm_section_map
));
2854 sec_data
->map
[newidx
].vma
= vma
;
2855 sec_data
->map
[newidx
].type
= type
;
2859 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
2860 veneers are handled for now. */
2863 record_vfp11_erratum_veneer (struct bfd_link_info
*link_info
,
2864 elf32_vfp11_erratum_list
*branch
,
2866 asection
*branch_sec
,
2867 unsigned int offset
)
2870 struct elf32_arm_link_hash_table
*hash_table
;
2872 struct elf_link_hash_entry
*myh
;
2873 struct bfd_link_hash_entry
*bh
;
2875 struct _arm_elf_section_data
*sec_data
;
2877 elf32_vfp11_erratum_list
*newerr
;
2879 hash_table
= elf32_arm_hash_table (link_info
);
2881 BFD_ASSERT (hash_table
!= NULL
);
2882 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
2884 s
= bfd_get_section_by_name
2885 (hash_table
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
2887 sec_data
= elf32_arm_section_data (s
);
2889 BFD_ASSERT (s
!= NULL
);
2891 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
2892 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
2894 BFD_ASSERT (tmp_name
);
2896 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
2897 hash_table
->num_vfp11_fixes
);
2899 myh
= elf_link_hash_lookup
2900 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
2902 BFD_ASSERT (myh
== NULL
);
2905 val
= hash_table
->vfp11_erratum_glue_size
;
2906 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2907 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
2908 NULL
, TRUE
, FALSE
, &bh
);
2910 myh
= (struct elf_link_hash_entry
*) bh
;
2911 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2912 myh
->forced_local
= 1;
2914 /* Link veneer back to calling location. */
2915 errcount
= ++(sec_data
->erratumcount
);
2916 newerr
= bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
2918 newerr
->type
= VFP11_ERRATUM_ARM_VENEER
;
2920 newerr
->u
.v
.branch
= branch
;
2921 newerr
->u
.v
.id
= hash_table
->num_vfp11_fixes
;
2922 branch
->u
.b
.veneer
= newerr
;
2924 newerr
->next
= sec_data
->erratumlist
;
2925 sec_data
->erratumlist
= newerr
;
2927 /* A symbol for the return from the veneer. */
2928 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
2929 hash_table
->num_vfp11_fixes
);
2931 myh
= elf_link_hash_lookup
2932 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
2939 _bfd_generic_link_add_one_symbol (link_info
, branch_bfd
, tmp_name
, BSF_LOCAL
,
2940 branch_sec
, val
, NULL
, TRUE
, FALSE
, &bh
);
2942 myh
= (struct elf_link_hash_entry
*) bh
;
2943 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2944 myh
->forced_local
= 1;
2948 /* Generate a mapping symbol for the veneer section, and explicitly add an
2949 entry for that symbol to the code/data map for the section. */
2950 if (hash_table
->vfp11_erratum_glue_size
== 0)
2953 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
2954 ever requires this erratum fix. */
2955 _bfd_generic_link_add_one_symbol (link_info
,
2956 hash_table
->bfd_of_glue_owner
, "$a",
2957 BSF_LOCAL
, s
, 0, NULL
,
2960 myh
= (struct elf_link_hash_entry
*) bh
;
2961 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
2962 myh
->forced_local
= 1;
2964 /* The elf32_arm_init_maps function only cares about symbols from input
2965 BFDs. We must make a note of this generated mapping symbol
2966 ourselves so that code byteswapping works properly in
2967 elf32_arm_write_section. */
2968 elf32_arm_section_map_add (s
, 'a', 0);
2971 s
->size
+= VFP11_ERRATUM_VENEER_SIZE
;
2972 hash_table
->vfp11_erratum_glue_size
+= VFP11_ERRATUM_VENEER_SIZE
;
2973 hash_table
->num_vfp11_fixes
++;
2975 /* The offset of the veneer. */
2979 /* Add the glue sections to ABFD. This function is called from the
2980 linker scripts in ld/emultempl/{armelf}.em. */
2983 bfd_elf32_arm_add_glue_sections_to_bfd (bfd
*abfd
,
2984 struct bfd_link_info
*info
)
2989 /* If we are only performing a partial
2990 link do not bother adding the glue. */
2991 if (info
->relocatable
)
2994 sec
= bfd_get_section_by_name (abfd
, ARM2THUMB_GLUE_SECTION_NAME
);
2998 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
2999 will prevent elf_link_input_bfd() from processing the contents
3001 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3002 | SEC_CODE
| SEC_READONLY
);
3004 sec
= bfd_make_section_with_flags (abfd
,
3005 ARM2THUMB_GLUE_SECTION_NAME
,
3009 || !bfd_set_section_alignment (abfd
, sec
, 2))
3012 /* Set the gc mark to prevent the section from being removed by garbage
3013 collection, despite the fact that no relocs refer to this section. */
3017 sec
= bfd_get_section_by_name (abfd
, THUMB2ARM_GLUE_SECTION_NAME
);
3021 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3022 | SEC_CODE
| SEC_READONLY
);
3024 sec
= bfd_make_section_with_flags (abfd
,
3025 THUMB2ARM_GLUE_SECTION_NAME
,
3029 || !bfd_set_section_alignment (abfd
, sec
, 2))
3035 sec
= bfd_get_section_by_name (abfd
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
3039 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3040 | SEC_CODE
| SEC_READONLY
);
3042 sec
= bfd_make_section_with_flags (abfd
,
3043 VFP11_ERRATUM_VENEER_SECTION_NAME
,
3047 || !bfd_set_section_alignment (abfd
, sec
, 2))
3056 /* Select a BFD to be used to hold the sections used by the glue code.
3057 This function is called from the linker scripts in ld/emultempl/
3061 bfd_elf32_arm_get_bfd_for_interworking (bfd
*abfd
, struct bfd_link_info
*info
)
3063 struct elf32_arm_link_hash_table
*globals
;
3065 /* If we are only performing a partial link
3066 do not bother getting a bfd to hold the glue. */
3067 if (info
->relocatable
)
3070 /* Make sure we don't attach the glue sections to a dynamic object. */
3071 BFD_ASSERT (!(abfd
->flags
& DYNAMIC
));
3073 globals
= elf32_arm_hash_table (info
);
3075 BFD_ASSERT (globals
!= NULL
);
3077 if (globals
->bfd_of_glue_owner
!= NULL
)
3080 /* Save the bfd for later use. */
3081 globals
->bfd_of_glue_owner
= abfd
;
3086 static void check_use_blx(struct elf32_arm_link_hash_table
*globals
)
3088 if (bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
3090 globals
->use_blx
= 1;
3094 bfd_elf32_arm_process_before_allocation (bfd
*abfd
,
3095 struct bfd_link_info
*link_info
)
3097 Elf_Internal_Shdr
*symtab_hdr
;
3098 Elf_Internal_Rela
*internal_relocs
= NULL
;
3099 Elf_Internal_Rela
*irel
, *irelend
;
3100 bfd_byte
*contents
= NULL
;
3103 struct elf32_arm_link_hash_table
*globals
;
3105 /* If we are only performing a partial link do not bother
3106 to construct any glue. */
3107 if (link_info
->relocatable
)
3110 /* Here we have a bfd that is to be included on the link. We have a hook
3111 to do reloc rummaging, before section sizes are nailed down. */
3112 globals
= elf32_arm_hash_table (link_info
);
3113 check_use_blx (globals
);
3115 BFD_ASSERT (globals
!= NULL
);
3116 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3118 if (globals
->byteswap_code
&& !bfd_big_endian (abfd
))
3120 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
3125 /* Rummage around all the relocs and map the glue vectors. */
3126 sec
= abfd
->sections
;
3131 for (; sec
!= NULL
; sec
= sec
->next
)
3133 if (sec
->reloc_count
== 0)
3136 if ((sec
->flags
& SEC_EXCLUDE
) != 0)
3139 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3141 /* Load the relocs. */
3143 = _bfd_elf_link_read_relocs (abfd
, sec
, (void *) NULL
,
3144 (Elf_Internal_Rela
*) NULL
, FALSE
);
3146 if (internal_relocs
== NULL
)
3149 irelend
= internal_relocs
+ sec
->reloc_count
;
3150 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
3153 unsigned long r_index
;
3155 struct elf_link_hash_entry
*h
;
3157 r_type
= ELF32_R_TYPE (irel
->r_info
);
3158 r_index
= ELF32_R_SYM (irel
->r_info
);
3160 /* These are the only relocation types we care about. */
3161 if ( r_type
!= R_ARM_PC24
3162 && r_type
!= R_ARM_PLT32
3163 && r_type
!= R_ARM_CALL
3164 && r_type
!= R_ARM_JUMP24
3165 && r_type
!= R_ARM_THM_CALL
)
3168 /* Get the section contents if we haven't done so already. */
3169 if (contents
== NULL
)
3171 /* Get cached copy if it exists. */
3172 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
3173 contents
= elf_section_data (sec
)->this_hdr
.contents
;
3176 /* Go get them off disk. */
3177 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
3182 /* If the relocation is not against a symbol it cannot concern us. */
3185 /* We don't care about local symbols. */
3186 if (r_index
< symtab_hdr
->sh_info
)
3189 /* This is an external symbol. */
3190 r_index
-= symtab_hdr
->sh_info
;
3191 h
= (struct elf_link_hash_entry
*)
3192 elf_sym_hashes (abfd
)[r_index
];
3194 /* If the relocation is against a static symbol it must be within
3195 the current section and so cannot be a cross ARM/Thumb relocation. */
3199 /* If the call will go through a PLT entry then we do not need
3201 if (globals
->splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
3210 /* This one is a call from arm code. We need to look up
3211 the target of the call. If it is a thumb target, we
3213 if (ELF_ST_TYPE(h
->type
) == STT_ARM_TFUNC
3214 && !(r_type
== R_ARM_CALL
&& globals
->use_blx
))
3215 record_arm_to_thumb_glue (link_info
, h
);
3218 case R_ARM_THM_CALL
:
3219 /* This one is a call from thumb code. We look
3220 up the target of the call. If it is not a thumb
3221 target, we insert glue. */
3222 if (ELF_ST_TYPE (h
->type
) != STT_ARM_TFUNC
&& !globals
->use_blx
3223 && h
->root
.type
!= bfd_link_hash_undefweak
)
3224 record_thumb_to_arm_glue (link_info
, h
);
3232 if (contents
!= NULL
3233 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3237 if (internal_relocs
!= NULL
3238 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3239 free (internal_relocs
);
3240 internal_relocs
= NULL
;
3246 if (contents
!= NULL
3247 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3249 if (internal_relocs
!= NULL
3250 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3251 free (internal_relocs
);
3258 /* Initialise maps of ARM/Thumb/data for input BFDs. */
3261 bfd_elf32_arm_init_maps (bfd
*abfd
)
3263 Elf_Internal_Sym
*isymbuf
;
3264 Elf_Internal_Shdr
*hdr
;
3265 unsigned int i
, localsyms
;
3267 if ((abfd
->flags
& DYNAMIC
) != 0)
3270 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3271 localsyms
= hdr
->sh_info
;
3273 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
3274 should contain the number of local symbols, which should come before any
3275 global symbols. Mapping symbols are always local. */
3276 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
,
3279 /* No internal symbols read? Skip this BFD. */
3280 if (isymbuf
== NULL
)
3283 for (i
= 0; i
< localsyms
; i
++)
3285 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
3286 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3290 && ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
3292 name
= bfd_elf_string_from_elf_section (abfd
,
3293 hdr
->sh_link
, isym
->st_name
);
3295 if (bfd_is_arm_special_symbol_name (name
,
3296 BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
3297 elf32_arm_section_map_add (sec
, name
[1], isym
->st_value
);
3304 bfd_elf32_arm_set_vfp11_fix (bfd
*obfd
, struct bfd_link_info
*link_info
)
3306 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
3307 obj_attribute
*out_attr
= elf_known_obj_attributes_proc (obfd
);
3309 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
3310 if (out_attr
[Tag_CPU_arch
].i
>= TAG_CPU_ARCH_V7
)
3312 switch (globals
->vfp11_fix
)
3314 case BFD_ARM_VFP11_FIX_DEFAULT
:
3315 case BFD_ARM_VFP11_FIX_NONE
:
3316 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
3320 /* Give a warning, but do as the user requests anyway. */
3321 (*_bfd_error_handler
) (_("%B: warning: selected VFP11 erratum "
3322 "workaround is not necessary for target architecture"), obfd
);
3325 else if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_DEFAULT
)
3326 /* For earlier architectures, we might need the workaround, but do not
3327 enable it by default. If users is running with broken hardware, they
3328 must enable the erratum fix explicitly. */
3329 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
3333 enum bfd_arm_vfp11_pipe
{
3340 /* Return a VFP register number. This is encoded as RX:X for single-precision
3341 registers, or X:RX for double-precision registers, where RX is the group of
3342 four bits in the instruction encoding and X is the single extension bit.
3343 RX and X fields are specified using their lowest (starting) bit. The return
3346 0...31: single-precision registers s0...s31
3347 32...63: double-precision registers d0...d31.
3349 Although X should be zero for VFP11 (encoding d0...d15 only), we might
3350 encounter VFP3 instructions, so we allow the full range for DP registers. */
3353 bfd_arm_vfp11_regno (unsigned int insn
, bfd_boolean is_double
, unsigned int rx
,
3357 return (((insn
>> rx
) & 0xf) | (((insn
>> x
) & 1) << 4)) + 32;
3359 return (((insn
>> rx
) & 0xf) << 1) | ((insn
>> x
) & 1);
3362 /* Set bits in *WMASK according to a register number REG as encoded by
3363 bfd_arm_vfp11_regno(). Ignore d16-d31. */
3366 bfd_arm_vfp11_write_mask (unsigned int *wmask
, unsigned int reg
)
3371 *wmask
|= 3 << ((reg
- 32) * 2);
3374 /* Return TRUE if WMASK overwrites anything in REGS. */
3377 bfd_arm_vfp11_antidependency (unsigned int wmask
, int *regs
, int numregs
)
3381 for (i
= 0; i
< numregs
; i
++)
3383 unsigned int reg
= regs
[i
];
3385 if (reg
< 32 && (wmask
& (1 << reg
)) != 0)
3393 if ((wmask
& (3 << (reg
* 2))) != 0)
3400 /* In this function, we're interested in two things: finding input registers
3401 for VFP data-processing instructions, and finding the set of registers which
3402 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
3403 hold the written set, so FLDM etc. are easy to deal with (we're only
3404 interested in 32 SP registers or 16 dp registers, due to the VFP version
3405 implemented by the chip in question). DP registers are marked by setting
3406 both SP registers in the write mask). */
3408 static enum bfd_arm_vfp11_pipe
3409 bfd_arm_vfp11_insn_decode (unsigned int insn
, unsigned int *destmask
, int *regs
,
3412 enum bfd_arm_vfp11_pipe pipe
= VFP11_BAD
;
3413 bfd_boolean is_double
= ((insn
& 0xf00) == 0xb00) ? 1 : 0;
3415 if ((insn
& 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
3418 unsigned int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
3419 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
3421 pqrs
= ((insn
& 0x00800000) >> 20)
3422 | ((insn
& 0x00300000) >> 19)
3423 | ((insn
& 0x00000040) >> 6);
3427 case 0: /* fmac[sd]. */
3428 case 1: /* fnmac[sd]. */
3429 case 2: /* fmsc[sd]. */
3430 case 3: /* fnmsc[sd]. */
3432 bfd_arm_vfp11_write_mask (destmask
, fd
);
3434 regs
[1] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
3439 case 4: /* fmul[sd]. */
3440 case 5: /* fnmul[sd]. */
3441 case 6: /* fadd[sd]. */
3442 case 7: /* fsub[sd]. */
3446 case 8: /* fdiv[sd]. */
3449 bfd_arm_vfp11_write_mask (destmask
, fd
);
3450 regs
[0] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
3455 case 15: /* extended opcode. */
3457 unsigned int extn
= ((insn
>> 15) & 0x1e)
3458 | ((insn
>> 7) & 1);
3462 case 0: /* fcpy[sd]. */
3463 case 1: /* fabs[sd]. */
3464 case 2: /* fneg[sd]. */
3465 case 8: /* fcmp[sd]. */
3466 case 9: /* fcmpe[sd]. */
3467 case 10: /* fcmpz[sd]. */
3468 case 11: /* fcmpez[sd]. */
3469 case 16: /* fuito[sd]. */
3470 case 17: /* fsito[sd]. */
3471 case 24: /* ftoui[sd]. */
3472 case 25: /* ftouiz[sd]. */
3473 case 26: /* ftosi[sd]. */
3474 case 27: /* ftosiz[sd]. */
3475 /* These instructions will not bounce due to underflow. */
3480 case 3: /* fsqrt[sd]. */
3481 /* fsqrt cannot underflow, but it can (perhaps) overwrite
3482 registers to cause the erratum in previous instructions. */
3483 bfd_arm_vfp11_write_mask (destmask
, fd
);
3487 case 15: /* fcvt{ds,sd}. */
3491 bfd_arm_vfp11_write_mask (destmask
, fd
);
3493 /* Only FCVTSD can underflow. */
3494 if ((insn
& 0x100) != 0)
3513 /* Two-register transfer. */
3514 else if ((insn
& 0x0fe00ed0) == 0x0c400a10)
3516 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
3518 if ((insn
& 0x100000) == 0)
3521 bfd_arm_vfp11_write_mask (destmask
, fm
);
3524 bfd_arm_vfp11_write_mask (destmask
, fm
);
3525 bfd_arm_vfp11_write_mask (destmask
, fm
+ 1);
3531 else if ((insn
& 0x0e100e00) == 0x0c100a00) /* A load insn. */
3533 int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
3534 unsigned int puw
= ((insn
>> 21) & 0x1) | (((insn
>> 23) & 3) << 1);
3538 case 0: /* Two-reg transfer. We should catch these above. */
3541 case 2: /* fldm[sdx]. */
3545 unsigned int i
, offset
= insn
& 0xff;
3550 for (i
= fd
; i
< fd
+ offset
; i
++)
3551 bfd_arm_vfp11_write_mask (destmask
, i
);
3555 case 4: /* fld[sd]. */
3557 bfd_arm_vfp11_write_mask (destmask
, fd
);
3566 /* Single-register transfer. Note L==0. */
3567 else if ((insn
& 0x0f100e10) == 0x0e000a10)
3569 unsigned int opcode
= (insn
>> 21) & 7;
3570 unsigned int fn
= bfd_arm_vfp11_regno (insn
, is_double
, 16, 7);
3574 case 0: /* fmsr/fmdlr. */
3575 case 1: /* fmdhr. */
3576 /* Mark fmdhr and fmdlr as writing to the whole of the DP
3577 destination register. I don't know if this is exactly right,
3578 but it is the conservative choice. */
3579 bfd_arm_vfp11_write_mask (destmask
, fn
);
3593 static int elf32_arm_compare_mapping (const void * a
, const void * b
);
3596 /* Look for potentially-troublesome code sequences which might trigger the
3597 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
3598 (available from ARM) for details of the erratum. A short version is
3599 described in ld.texinfo. */
3602 bfd_elf32_arm_vfp11_erratum_scan (bfd
*abfd
, struct bfd_link_info
*link_info
)
3605 bfd_byte
*contents
= NULL
;
3607 int regs
[3], numregs
= 0;
3608 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
3609 int use_vector
= (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_VECTOR
);
3611 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
3612 The states transition as follows:
3614 0 -> 1 (vector) or 0 -> 2 (scalar)
3615 A VFP FMAC-pipeline instruction has been seen. Fill
3616 regs[0]..regs[numregs-1] with its input operands. Remember this
3617 instruction in 'first_fmac'.
3620 Any instruction, except for a VFP instruction which overwrites
3625 A VFP instruction has been seen which overwrites any of regs[*].
3626 We must make a veneer! Reset state to 0 before examining next
3630 If we fail to match anything in state 2, reset to state 0 and reset
3631 the instruction pointer to the instruction after 'first_fmac'.
3633 If the VFP11 vector mode is in use, there must be at least two unrelated
3634 instructions between anti-dependent VFP11 instructions to properly avoid
3635 triggering the erratum, hence the use of the extra state 1.
3638 /* If we are only performing a partial link do not bother
3639 to construct any glue. */
3640 if (link_info
->relocatable
)
3643 /* We should have chosen a fix type by the time we get here. */
3644 BFD_ASSERT (globals
->vfp11_fix
!= BFD_ARM_VFP11_FIX_DEFAULT
);
3646 if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_NONE
)
3649 /* Skip if this bfd does not correspond to an ELF image. */
3650 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
3653 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3655 unsigned int i
, span
, first_fmac
= 0, veneer_of_insn
= 0;
3656 struct _arm_elf_section_data
*sec_data
;
3658 /* If we don't have executable progbits, we're not interested in this
3659 section. Also skip if section is to be excluded. */
3660 if (elf_section_type (sec
) != SHT_PROGBITS
3661 || (elf_section_flags (sec
) & SHF_EXECINSTR
) == 0
3662 || (sec
->flags
& SEC_EXCLUDE
) != 0
3663 || strcmp (sec
->name
, VFP11_ERRATUM_VENEER_SECTION_NAME
) == 0)
3666 sec_data
= elf32_arm_section_data (sec
);
3668 if (sec_data
->mapcount
== 0)
3671 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
3672 contents
= elf_section_data (sec
)->this_hdr
.contents
;
3673 else if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
3676 qsort (sec_data
->map
, sec_data
->mapcount
, sizeof (elf32_arm_section_map
),
3677 elf32_arm_compare_mapping
);
3679 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3681 unsigned int span_start
= sec_data
->map
[span
].vma
;
3682 unsigned int span_end
= (span
== sec_data
->mapcount
- 1)
3683 ? sec
->size
: sec_data
->map
[span
+ 1].vma
;
3684 char span_type
= sec_data
->map
[span
].type
;
3686 /* FIXME: Only ARM mode is supported at present. We may need to
3687 support Thumb-2 mode also at some point. */
3688 if (span_type
!= 'a')
3691 for (i
= span_start
; i
< span_end
;)
3693 unsigned int next_i
= i
+ 4;
3694 unsigned int insn
= bfd_big_endian (abfd
)
3695 ? (contents
[i
] << 24)
3696 | (contents
[i
+ 1] << 16)
3697 | (contents
[i
+ 2] << 8)
3699 : (contents
[i
+ 3] << 24)
3700 | (contents
[i
+ 2] << 16)
3701 | (contents
[i
+ 1] << 8)
3703 unsigned int writemask
= 0;
3704 enum bfd_arm_vfp11_pipe pipe
;
3709 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
, regs
,
3711 /* I'm assuming the VFP11 erratum can trigger with denorm
3712 operands on either the FMAC or the DS pipeline. This might
3713 lead to slightly overenthusiastic veneer insertion. */
3714 if (pipe
== VFP11_FMAC
|| pipe
== VFP11_DS
)
3716 state
= use_vector
? 1 : 2;
3718 veneer_of_insn
= insn
;
3724 int other_regs
[3], other_numregs
;
3725 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
3728 if (pipe
!= VFP11_BAD
3729 && bfd_arm_vfp11_antidependency (writemask
, regs
,
3739 int other_regs
[3], other_numregs
;
3740 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
3743 if (pipe
!= VFP11_BAD
3744 && bfd_arm_vfp11_antidependency (writemask
, regs
,
3750 next_i
= first_fmac
+ 4;
3756 abort (); /* Should be unreachable. */
3761 elf32_vfp11_erratum_list
*newerr
3762 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
3765 errcount
= ++(elf32_arm_section_data (sec
)->erratumcount
);
3767 newerr
->u
.b
.vfp_insn
= veneer_of_insn
;
3772 newerr
->type
= VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
;
3779 record_vfp11_erratum_veneer (link_info
, newerr
, abfd
, sec
,
3784 newerr
->next
= sec_data
->erratumlist
;
3785 sec_data
->erratumlist
= newerr
;
3794 if (contents
!= NULL
3795 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3803 if (contents
!= NULL
3804 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3810 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
3811 after sections have been laid out, using specially-named symbols. */
3814 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd
*abfd
,
3815 struct bfd_link_info
*link_info
)
3818 struct elf32_arm_link_hash_table
*globals
;
3821 if (link_info
->relocatable
)
3824 /* Skip if this bfd does not correspond to an ELF image. */
3825 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
3828 globals
= elf32_arm_hash_table (link_info
);
3830 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
3831 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
3833 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3835 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
3836 elf32_vfp11_erratum_list
*errnode
= sec_data
->erratumlist
;
3838 for (; errnode
!= NULL
; errnode
= errnode
->next
)
3840 struct elf_link_hash_entry
*myh
;
3843 switch (errnode
->type
)
3845 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
3846 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
:
3847 /* Find veneer symbol. */
3848 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
3849 errnode
->u
.b
.veneer
->u
.v
.id
);
3851 myh
= elf_link_hash_lookup
3852 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3855 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
3856 "`%s'"), abfd
, tmp_name
);
3858 vma
= myh
->root
.u
.def
.section
->output_section
->vma
3859 + myh
->root
.u
.def
.section
->output_offset
3860 + myh
->root
.u
.def
.value
;
3862 errnode
->u
.b
.veneer
->vma
= vma
;
3865 case VFP11_ERRATUM_ARM_VENEER
:
3866 case VFP11_ERRATUM_THUMB_VENEER
:
3867 /* Find return location. */
3868 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
3871 myh
= elf_link_hash_lookup
3872 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3875 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
3876 "`%s'"), abfd
, tmp_name
);
3878 vma
= myh
->root
.u
.def
.section
->output_section
->vma
3879 + myh
->root
.u
.def
.section
->output_offset
3880 + myh
->root
.u
.def
.value
;
3882 errnode
->u
.v
.branch
->vma
= vma
;
3895 /* Set target relocation values needed during linking. */
3898 bfd_elf32_arm_set_target_relocs (struct bfd
*output_bfd
,
3899 struct bfd_link_info
*link_info
,
3901 char * target2_type
,
3904 bfd_arm_vfp11_fix vfp11_fix
,
3905 int no_enum_warn
, int pic_veneer
)
3907 struct elf32_arm_link_hash_table
*globals
;
3909 globals
= elf32_arm_hash_table (link_info
);
3911 globals
->target1_is_rel
= target1_is_rel
;
3912 if (strcmp (target2_type
, "rel") == 0)
3913 globals
->target2_reloc
= R_ARM_REL32
;
3914 else if (strcmp (target2_type
, "abs") == 0)
3915 globals
->target2_reloc
= R_ARM_ABS32
;
3916 else if (strcmp (target2_type
, "got-rel") == 0)
3917 globals
->target2_reloc
= R_ARM_GOT_PREL
;
3920 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
3923 globals
->fix_v4bx
= fix_v4bx
;
3924 globals
->use_blx
|= use_blx
;
3925 globals
->vfp11_fix
= vfp11_fix
;
3926 globals
->pic_veneer
= pic_veneer
;
3928 elf32_arm_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
3931 /* The thumb form of a long branch is a bit finicky, because the offset
3932 encoding is split over two fields, each in it's own instruction. They
3933 can occur in any order. So given a thumb form of long branch, and an
3934 offset, insert the offset into the thumb branch and return finished
3937 It takes two thumb instructions to encode the target address. Each has
3938 11 bits to invest. The upper 11 bits are stored in one (identified by
3939 H-0.. see below), the lower 11 bits are stored in the other (identified
3942 Combine together and shifted left by 1 (it's a half word address) and
3946 H-0, upper address-0 = 000
3948 H-1, lower address-0 = 800
3950 They can be ordered either way, but the arm tools I've seen always put
3951 the lower one first. It probably doesn't matter. krk@cygnus.com
3953 XXX: Actually the order does matter. The second instruction (H-1)
3954 moves the computed address into the PC, so it must be the second one
3955 in the sequence. The problem, however is that whilst little endian code
3956 stores the instructions in HI then LOW order, big endian code does the
3957 reverse. nickc@cygnus.com. */
3959 #define LOW_HI_ORDER 0xF800F000
3960 #define HI_LOW_ORDER 0xF000F800
3963 insert_thumb_branch (insn32 br_insn
, int rel_off
)
3965 unsigned int low_bits
;
3966 unsigned int high_bits
;
3968 BFD_ASSERT ((rel_off
& 1) != 1);
3970 rel_off
>>= 1; /* Half word aligned address. */
3971 low_bits
= rel_off
& 0x000007FF; /* The bottom 11 bits. */
3972 high_bits
= (rel_off
>> 11) & 0x000007FF; /* The top 11 bits. */
3974 if ((br_insn
& LOW_HI_ORDER
) == LOW_HI_ORDER
)
3975 br_insn
= LOW_HI_ORDER
| (low_bits
<< 16) | high_bits
;
3976 else if ((br_insn
& HI_LOW_ORDER
) == HI_LOW_ORDER
)
3977 br_insn
= HI_LOW_ORDER
| (high_bits
<< 16) | low_bits
;
3979 /* FIXME: abort is probably not the right call. krk@cygnus.com */
3980 abort (); /* Error - not a valid branch instruction form. */
3986 /* Store an Arm insn into an output section not processed by
3987 elf32_arm_write_section. */
3990 put_arm_insn (struct elf32_arm_link_hash_table
*htab
,
3991 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3993 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3994 bfd_putl32 (val
, ptr
);
3996 bfd_putb32 (val
, ptr
);
4000 /* Store a 16-bit Thumb insn into an output section not processed by
4001 elf32_arm_write_section. */
4004 put_thumb_insn (struct elf32_arm_link_hash_table
*htab
,
4005 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
4007 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
4008 bfd_putl16 (val
, ptr
);
4010 bfd_putb16 (val
, ptr
);
4014 /* Thumb code calling an ARM function. */
4017 elf32_thumb_to_arm_stub (struct bfd_link_info
* info
,
4021 asection
* input_section
,
4022 bfd_byte
* hit_data
,
4025 bfd_signed_vma addend
,
4027 char **error_message
)
4031 unsigned long int tmp
;
4032 long int ret_offset
;
4033 struct elf_link_hash_entry
* myh
;
4034 struct elf32_arm_link_hash_table
* globals
;
4036 myh
= find_thumb_glue (info
, name
, error_message
);
4040 globals
= elf32_arm_hash_table (info
);
4042 BFD_ASSERT (globals
!= NULL
);
4043 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4045 my_offset
= myh
->root
.u
.def
.value
;
4047 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4048 THUMB2ARM_GLUE_SECTION_NAME
);
4050 BFD_ASSERT (s
!= NULL
);
4051 BFD_ASSERT (s
->contents
!= NULL
);
4052 BFD_ASSERT (s
->output_section
!= NULL
);
4054 if ((my_offset
& 0x01) == 0x01)
4057 && sym_sec
->owner
!= NULL
4058 && !INTERWORK_FLAG (sym_sec
->owner
))
4060 (*_bfd_error_handler
)
4061 (_("%B(%s): warning: interworking not enabled.\n"
4062 " first occurrence: %B: thumb call to arm"),
4063 sym_sec
->owner
, input_bfd
, name
);
4069 myh
->root
.u
.def
.value
= my_offset
;
4071 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a1_bx_pc_insn
,
4072 s
->contents
+ my_offset
);
4074 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a2_noop_insn
,
4075 s
->contents
+ my_offset
+ 2);
4078 /* Address of destination of the stub. */
4079 ((bfd_signed_vma
) val
)
4081 /* Offset from the start of the current section
4082 to the start of the stubs. */
4084 /* Offset of the start of this stub from the start of the stubs. */
4086 /* Address of the start of the current section. */
4087 + s
->output_section
->vma
)
4088 /* The branch instruction is 4 bytes into the stub. */
4090 /* ARM branches work from the pc of the instruction + 8. */
4093 put_arm_insn (globals
, output_bfd
,
4094 (bfd_vma
) t2a3_b_insn
| ((ret_offset
>> 2) & 0x00FFFFFF),
4095 s
->contents
+ my_offset
+ 4);
4098 BFD_ASSERT (my_offset
<= globals
->thumb_glue_size
);
4100 /* Now go back and fix up the original BL insn to point to here. */
4102 /* Address of where the stub is located. */
4103 (s
->output_section
->vma
+ s
->output_offset
+ my_offset
)
4104 /* Address of where the BL is located. */
4105 - (input_section
->output_section
->vma
+ input_section
->output_offset
4107 /* Addend in the relocation. */
4109 /* Biassing for PC-relative addressing. */
4112 tmp
= bfd_get_32 (input_bfd
, hit_data
4113 - input_section
->vma
);
4115 bfd_put_32 (output_bfd
,
4116 (bfd_vma
) insert_thumb_branch (tmp
, ret_offset
),
4117 hit_data
- input_section
->vma
);
4122 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
4124 static struct elf_link_hash_entry
*
4125 elf32_arm_create_thumb_stub (struct bfd_link_info
* info
,
4132 char **error_message
)
4135 long int ret_offset
;
4136 struct elf_link_hash_entry
* myh
;
4137 struct elf32_arm_link_hash_table
* globals
;
4139 myh
= find_arm_glue (info
, name
, error_message
);
4143 globals
= elf32_arm_hash_table (info
);
4145 BFD_ASSERT (globals
!= NULL
);
4146 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4148 my_offset
= myh
->root
.u
.def
.value
;
4150 if ((my_offset
& 0x01) == 0x01)
4153 && sym_sec
->owner
!= NULL
4154 && !INTERWORK_FLAG (sym_sec
->owner
))
4156 (*_bfd_error_handler
)
4157 (_("%B(%s): warning: interworking not enabled.\n"
4158 " first occurrence: %B: arm call to thumb"),
4159 sym_sec
->owner
, input_bfd
, name
);
4163 myh
->root
.u
.def
.value
= my_offset
;
4165 if (info
->shared
|| globals
->root
.is_relocatable_executable
4166 || globals
->pic_veneer
)
4168 /* For relocatable objects we can't use absolute addresses,
4169 so construct the address from a relative offset. */
4170 /* TODO: If the offset is small it's probably worth
4171 constructing the address with adds. */
4172 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1p_ldr_insn
,
4173 s
->contents
+ my_offset
);
4174 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2p_add_pc_insn
,
4175 s
->contents
+ my_offset
+ 4);
4176 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t3p_bx_r12_insn
,
4177 s
->contents
+ my_offset
+ 8);
4178 /* Adjust the offset by 4 for the position of the add,
4179 and 8 for the pipeline offset. */
4180 ret_offset
= (val
- (s
->output_offset
4181 + s
->output_section
->vma
4184 bfd_put_32 (output_bfd
, ret_offset
,
4185 s
->contents
+ my_offset
+ 12);
4187 else if (globals
->use_blx
)
4189 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1v5_ldr_insn
,
4190 s
->contents
+ my_offset
);
4192 /* It's a thumb address. Add the low order bit. */
4193 bfd_put_32 (output_bfd
, val
| a2t2v5_func_addr_insn
,
4194 s
->contents
+ my_offset
+ 4);
4198 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1_ldr_insn
,
4199 s
->contents
+ my_offset
);
4201 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2_bx_r12_insn
,
4202 s
->contents
+ my_offset
+ 4);
4204 /* It's a thumb address. Add the low order bit. */
4205 bfd_put_32 (output_bfd
, val
| a2t3_func_addr_insn
,
4206 s
->contents
+ my_offset
+ 8);
4210 BFD_ASSERT (my_offset
<= globals
->arm_glue_size
);
4215 /* Arm code calling a Thumb function. */
4218 elf32_arm_to_thumb_stub (struct bfd_link_info
* info
,
4222 asection
* input_section
,
4223 bfd_byte
* hit_data
,
4226 bfd_signed_vma addend
,
4228 char **error_message
)
4230 unsigned long int tmp
;
4233 long int ret_offset
;
4234 struct elf_link_hash_entry
* myh
;
4235 struct elf32_arm_link_hash_table
* globals
;
4237 globals
= elf32_arm_hash_table (info
);
4239 BFD_ASSERT (globals
!= NULL
);
4240 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4242 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4243 ARM2THUMB_GLUE_SECTION_NAME
);
4244 BFD_ASSERT (s
!= NULL
);
4245 BFD_ASSERT (s
->contents
!= NULL
);
4246 BFD_ASSERT (s
->output_section
!= NULL
);
4248 myh
= elf32_arm_create_thumb_stub (info
, name
, input_bfd
, output_bfd
,
4249 sym_sec
, val
, s
, error_message
);
4253 my_offset
= myh
->root
.u
.def
.value
;
4254 tmp
= bfd_get_32 (input_bfd
, hit_data
);
4255 tmp
= tmp
& 0xFF000000;
4257 /* Somehow these are both 4 too far, so subtract 8. */
4258 ret_offset
= (s
->output_offset
4260 + s
->output_section
->vma
4261 - (input_section
->output_offset
4262 + input_section
->output_section
->vma
4266 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
4268 bfd_put_32 (output_bfd
, (bfd_vma
) tmp
, hit_data
- input_section
->vma
);
4273 /* Populate Arm stub for an exported Thumb function. */
4276 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry
*h
, void * inf
)
4278 struct bfd_link_info
* info
= (struct bfd_link_info
*) inf
;
4280 struct elf_link_hash_entry
* myh
;
4281 struct elf32_arm_link_hash_entry
*eh
;
4282 struct elf32_arm_link_hash_table
* globals
;
4285 char *error_message
;
4287 eh
= elf32_arm_hash_entry(h
);
4288 /* Allocate stubs for exported Thumb functions on v4t. */
4289 if (eh
->export_glue
== NULL
)
4292 globals
= elf32_arm_hash_table (info
);
4294 BFD_ASSERT (globals
!= NULL
);
4295 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4297 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4298 ARM2THUMB_GLUE_SECTION_NAME
);
4299 BFD_ASSERT (s
!= NULL
);
4300 BFD_ASSERT (s
->contents
!= NULL
);
4301 BFD_ASSERT (s
->output_section
!= NULL
);
4303 sec
= eh
->export_glue
->root
.u
.def
.section
;
4305 BFD_ASSERT (sec
->output_section
!= NULL
);
4307 val
= eh
->export_glue
->root
.u
.def
.value
+ sec
->output_offset
4308 + sec
->output_section
->vma
;
4309 myh
= elf32_arm_create_thumb_stub (info
, h
->root
.root
.string
,
4310 h
->root
.u
.def
.section
->owner
,
4311 globals
->obfd
, sec
, val
, s
,
4317 /* Generate Arm stubs for exported Thumb symbols. */
4319 elf32_arm_begin_write_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
4320 struct bfd_link_info
*link_info
)
4322 struct elf32_arm_link_hash_table
* globals
;
4327 globals
= elf32_arm_hash_table (link_info
);
4328 /* If blx is available then exported Thumb symbols are OK and there is
4330 if (globals
->use_blx
)
4333 elf_link_hash_traverse (&globals
->root
, elf32_arm_to_thumb_export_stub
,
4337 /* Some relocations map to different relocations depending on the
4338 target. Return the real relocation. */
4340 arm_real_reloc_type (struct elf32_arm_link_hash_table
* globals
,
4346 if (globals
->target1_is_rel
)
4352 return globals
->target2_reloc
;
4359 /* Return the base VMA address which should be subtracted from real addresses
4360 when resolving @dtpoff relocation.
4361 This is PT_TLS segment p_vaddr. */
4364 dtpoff_base (struct bfd_link_info
*info
)
4366 /* If tls_sec is NULL, we should have signalled an error already. */
4367 if (elf_hash_table (info
)->tls_sec
== NULL
)
4369 return elf_hash_table (info
)->tls_sec
->vma
;
4372 /* Return the relocation value for @tpoff relocation
4373 if STT_TLS virtual address is ADDRESS. */
4376 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
4378 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4381 /* If tls_sec is NULL, we should have signalled an error already. */
4382 if (htab
->tls_sec
== NULL
)
4384 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
4385 return address
- htab
->tls_sec
->vma
+ base
;
4388 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
4389 VALUE is the relocation value. */
4391 static bfd_reloc_status_type
4392 elf32_arm_abs12_reloc (bfd
*abfd
, void *data
, bfd_vma value
)
4395 return bfd_reloc_overflow
;
4397 value
|= bfd_get_32 (abfd
, data
) & 0xfffff000;
4398 bfd_put_32 (abfd
, value
, data
);
4399 return bfd_reloc_ok
;
4402 /* For a given value of n, calculate the value of G_n as required to
4403 deal with group relocations. We return it in the form of an
4404 encoded constant-and-rotation, together with the final residual. If n is
4405 specified as less than zero, then final_residual is filled with the
4406 input value and no further action is performed. */
4409 calculate_group_reloc_mask (bfd_vma value
, int n
, bfd_vma
*final_residual
)
4413 bfd_vma encoded_g_n
= 0;
4414 bfd_vma residual
= value
; /* Also known as Y_n. */
4416 for (current_n
= 0; current_n
<= n
; current_n
++)
4420 /* Calculate which part of the value to mask. */
4427 /* Determine the most significant bit in the residual and
4428 align the resulting value to a 2-bit boundary. */
4429 for (msb
= 30; msb
>= 0; msb
-= 2)
4430 if (residual
& (3 << msb
))
4433 /* The desired shift is now (msb - 6), or zero, whichever
4440 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
4441 g_n
= residual
& (0xff << shift
);
4442 encoded_g_n
= (g_n
>> shift
)
4443 | ((g_n
<= 0xff ? 0 : (32 - shift
) / 2) << 8);
4445 /* Calculate the residual for the next time around. */
4449 *final_residual
= residual
;
4454 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
4455 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
4457 identify_add_or_sub(bfd_vma insn
)
4459 int opcode
= insn
& 0x1e00000;
4461 if (opcode
== 1 << 23) /* ADD */
4464 if (opcode
== 1 << 22) /* SUB */
4470 /* Determine if we're dealing with a Thumb-2 object. */
4472 static int using_thumb2 (struct elf32_arm_link_hash_table
*globals
)
4474 int arch
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
4476 return arch
== TAG_CPU_ARCH_V6T2
|| arch
>= TAG_CPU_ARCH_V7
;
4479 /* Perform a relocation as part of a final link. */
4481 static bfd_reloc_status_type
4482 elf32_arm_final_link_relocate (reloc_howto_type
* howto
,
4485 asection
* input_section
,
4486 bfd_byte
* contents
,
4487 Elf_Internal_Rela
* rel
,
4489 struct bfd_link_info
* info
,
4491 const char * sym_name
,
4493 struct elf_link_hash_entry
* h
,
4494 bfd_boolean
* unresolved_reloc_p
,
4495 char **error_message
)
4497 unsigned long r_type
= howto
->type
;
4498 unsigned long r_symndx
;
4499 bfd_byte
* hit_data
= contents
+ rel
->r_offset
;
4500 bfd
* dynobj
= NULL
;
4501 Elf_Internal_Shdr
* symtab_hdr
;
4502 struct elf_link_hash_entry
** sym_hashes
;
4503 bfd_vma
* local_got_offsets
;
4504 asection
* sgot
= NULL
;
4505 asection
* splt
= NULL
;
4506 asection
* sreloc
= NULL
;
4508 bfd_signed_vma signed_addend
;
4509 struct elf32_arm_link_hash_table
* globals
;
4511 globals
= elf32_arm_hash_table (info
);
4513 /* Some relocation type map to different relocations depending on the
4514 target. We pick the right one here. */
4515 r_type
= arm_real_reloc_type (globals
, r_type
);
4516 if (r_type
!= howto
->type
)
4517 howto
= elf32_arm_howto_from_type (r_type
);
4519 /* If the start address has been set, then set the EF_ARM_HASENTRY
4520 flag. Setting this more than once is redundant, but the cost is
4521 not too high, and it keeps the code simple.
4523 The test is done here, rather than somewhere else, because the
4524 start address is only set just before the final link commences.
4526 Note - if the user deliberately sets a start address of 0, the
4527 flag will not be set. */
4528 if (bfd_get_start_address (output_bfd
) != 0)
4529 elf_elfheader (output_bfd
)->e_flags
|= EF_ARM_HASENTRY
;
4531 dynobj
= elf_hash_table (info
)->dynobj
;
4534 sgot
= bfd_get_section_by_name (dynobj
, ".got");
4535 splt
= bfd_get_section_by_name (dynobj
, ".plt");
4537 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
4538 sym_hashes
= elf_sym_hashes (input_bfd
);
4539 local_got_offsets
= elf_local_got_offsets (input_bfd
);
4540 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4542 if (globals
->use_rel
)
4544 addend
= bfd_get_32 (input_bfd
, hit_data
) & howto
->src_mask
;
4546 if (addend
& ((howto
->src_mask
+ 1) >> 1))
4549 signed_addend
&= ~ howto
->src_mask
;
4550 signed_addend
|= addend
;
4553 signed_addend
= addend
;
4556 addend
= signed_addend
= rel
->r_addend
;
4561 /* We don't need to find a value for this symbol. It's just a
4563 *unresolved_reloc_p
= FALSE
;
4564 return bfd_reloc_ok
;
4567 if (!globals
->vxworks_p
)
4568 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
4572 case R_ARM_ABS32_NOI
:
4574 case R_ARM_REL32_NOI
:
4580 /* Handle relocations which should use the PLT entry. ABS32/REL32
4581 will use the symbol's value, which may point to a PLT entry, but we
4582 don't need to handle that here. If we created a PLT entry, all
4583 branches in this object should go to it. */
4584 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
4585 && r_type
!= R_ARM_ABS32_NOI
&& r_type
!= R_ARM_REL32_NOI
)
4588 && h
->plt
.offset
!= (bfd_vma
) -1)
4590 /* If we've created a .plt section, and assigned a PLT entry to
4591 this function, it should not be known to bind locally. If
4592 it were, we would have cleared the PLT entry. */
4593 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
4595 value
= (splt
->output_section
->vma
4596 + splt
->output_offset
4598 *unresolved_reloc_p
= FALSE
;
4599 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4600 contents
, rel
->r_offset
, value
,
4604 /* When generating a shared object or relocatable executable, these
4605 relocations are copied into the output file to be resolved at
4607 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
4608 && (input_section
->flags
& SEC_ALLOC
)
4609 && ((r_type
!= R_ARM_REL32
&& r_type
!= R_ARM_REL32_NOI
)
4610 || !SYMBOL_CALLS_LOCAL (info
, h
))
4612 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4613 || h
->root
.type
!= bfd_link_hash_undefweak
)
4614 && r_type
!= R_ARM_PC24
4615 && r_type
!= R_ARM_CALL
4616 && r_type
!= R_ARM_JUMP24
4617 && r_type
!= R_ARM_PREL31
4618 && r_type
!= R_ARM_PLT32
)
4620 Elf_Internal_Rela outrel
;
4622 bfd_boolean skip
, relocate
;
4624 *unresolved_reloc_p
= FALSE
;
4630 name
= (bfd_elf_string_from_elf_section
4632 elf_elfheader (input_bfd
)->e_shstrndx
,
4633 elf_section_data (input_section
)->rel_hdr
.sh_name
));
4635 return bfd_reloc_notsupported
;
4637 BFD_ASSERT (reloc_section_p (globals
, name
, input_section
));
4639 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4640 BFD_ASSERT (sreloc
!= NULL
);
4646 outrel
.r_addend
= addend
;
4648 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
4650 if (outrel
.r_offset
== (bfd_vma
) -1)
4652 else if (outrel
.r_offset
== (bfd_vma
) -2)
4653 skip
= TRUE
, relocate
= TRUE
;
4654 outrel
.r_offset
+= (input_section
->output_section
->vma
4655 + input_section
->output_offset
);
4658 memset (&outrel
, 0, sizeof outrel
);
4663 || !h
->def_regular
))
4664 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
4669 /* This symbol is local, or marked to become local. */
4670 if (sym_flags
== STT_ARM_TFUNC
)
4672 if (globals
->symbian_p
)
4676 /* On Symbian OS, the data segment and text segement
4677 can be relocated independently. Therefore, we
4678 must indicate the segment to which this
4679 relocation is relative. The BPABI allows us to
4680 use any symbol in the right segment; we just use
4681 the section symbol as it is convenient. (We
4682 cannot use the symbol given by "h" directly as it
4683 will not appear in the dynamic symbol table.)
4685 Note that the dynamic linker ignores the section
4686 symbol value, so we don't subtract osec->vma
4687 from the emitted reloc addend. */
4689 osec
= sym_sec
->output_section
;
4691 osec
= input_section
->output_section
;
4692 symbol
= elf_section_data (osec
)->dynindx
;
4695 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4697 if ((osec
->flags
& SEC_READONLY
) == 0
4698 && htab
->data_index_section
!= NULL
)
4699 osec
= htab
->data_index_section
;
4701 osec
= htab
->text_index_section
;
4702 symbol
= elf_section_data (osec
)->dynindx
;
4704 BFD_ASSERT (symbol
!= 0);
4707 /* On SVR4-ish systems, the dynamic loader cannot
4708 relocate the text and data segments independently,
4709 so the symbol does not matter. */
4711 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
4712 if (globals
->use_rel
)
4715 outrel
.r_addend
+= value
;
4718 loc
= sreloc
->contents
;
4719 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
4720 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4722 /* If this reloc is against an external symbol, we do not want to
4723 fiddle with the addend. Otherwise, we need to include the symbol
4724 value so that it becomes an addend for the dynamic reloc. */
4726 return bfd_reloc_ok
;
4728 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4729 contents
, rel
->r_offset
, value
,
4732 else switch (r_type
)
4735 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
4737 case R_ARM_XPC25
: /* Arm BLX instruction. */
4740 case R_ARM_PC24
: /* Arm B/BL instruction */
4742 if (r_type
== R_ARM_XPC25
)
4744 /* Check for Arm calling Arm function. */
4745 /* FIXME: Should we translate the instruction into a BL
4746 instruction instead ? */
4747 if (sym_flags
!= STT_ARM_TFUNC
)
4748 (*_bfd_error_handler
)
4749 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
4751 h
? h
->root
.root
.string
: "(local)");
4753 else if (r_type
!= R_ARM_CALL
|| !globals
->use_blx
)
4755 /* Check for Arm calling Thumb function. */
4756 if (sym_flags
== STT_ARM_TFUNC
)
4758 if (elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
4759 output_bfd
, input_section
,
4760 hit_data
, sym_sec
, rel
->r_offset
,
4761 signed_addend
, value
,
4763 return bfd_reloc_ok
;
4765 return bfd_reloc_dangerous
;
4769 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
4771 S is the address of the symbol in the relocation.
4772 P is address of the instruction being relocated.
4773 A is the addend (extracted from the instruction) in bytes.
4775 S is held in 'value'.
4776 P is the base address of the section containing the
4777 instruction plus the offset of the reloc into that
4779 (input_section->output_section->vma +
4780 input_section->output_offset +
4782 A is the addend, converted into bytes, ie:
4785 Note: None of these operations have knowledge of the pipeline
4786 size of the processor, thus it is up to the assembler to
4787 encode this information into the addend. */
4788 value
-= (input_section
->output_section
->vma
4789 + input_section
->output_offset
);
4790 value
-= rel
->r_offset
;
4791 if (globals
->use_rel
)
4792 value
+= (signed_addend
<< howto
->size
);
4794 /* RELA addends do not have to be adjusted by howto->size. */
4795 value
+= signed_addend
;
4797 signed_addend
= value
;
4798 signed_addend
>>= howto
->rightshift
;
4800 /* A branch to an undefined weak symbol is turned into a jump to
4801 the next instruction. */
4802 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
4804 value
= (bfd_get_32 (input_bfd
, hit_data
) & 0xf0000000)
4809 /* Perform a signed range check. */
4810 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
4811 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
4812 return bfd_reloc_overflow
;
4814 addend
= (value
& 2);
4816 value
= (signed_addend
& howto
->dst_mask
)
4817 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
4819 /* Set the H bit in the BLX instruction. */
4820 if (sym_flags
== STT_ARM_TFUNC
)
4825 value
&= ~(bfd_vma
)(1 << 24);
4827 if (r_type
== R_ARM_CALL
)
4829 /* Select the correct instruction (BL or BLX). */
4830 if (sym_flags
== STT_ARM_TFUNC
)
4834 value
&= ~(bfd_vma
)(1 << 28);
4843 if (sym_flags
== STT_ARM_TFUNC
)
4847 case R_ARM_ABS32_NOI
:
4853 if (sym_flags
== STT_ARM_TFUNC
)
4855 value
-= (input_section
->output_section
->vma
4856 + input_section
->output_offset
+ rel
->r_offset
);
4859 case R_ARM_REL32_NOI
:
4861 value
-= (input_section
->output_section
->vma
4862 + input_section
->output_offset
+ rel
->r_offset
);
4866 value
-= (input_section
->output_section
->vma
4867 + input_section
->output_offset
+ rel
->r_offset
);
4868 value
+= signed_addend
;
4869 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
4871 /* Check for overflow */
4872 if ((value
^ (value
>> 1)) & (1 << 30))
4873 return bfd_reloc_overflow
;
4875 value
&= 0x7fffffff;
4876 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
4877 if (sym_flags
== STT_ARM_TFUNC
)
4882 bfd_put_32 (input_bfd
, value
, hit_data
);
4883 return bfd_reloc_ok
;
4887 if ((long) value
> 0x7f || (long) value
< -0x80)
4888 return bfd_reloc_overflow
;
4890 bfd_put_8 (input_bfd
, value
, hit_data
);
4891 return bfd_reloc_ok
;
4896 if ((long) value
> 0x7fff || (long) value
< -0x8000)
4897 return bfd_reloc_overflow
;
4899 bfd_put_16 (input_bfd
, value
, hit_data
);
4900 return bfd_reloc_ok
;
4902 case R_ARM_THM_ABS5
:
4903 /* Support ldr and str instructions for the thumb. */
4904 if (globals
->use_rel
)
4906 /* Need to refetch addend. */
4907 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
4908 /* ??? Need to determine shift amount from operand size. */
4909 addend
>>= howto
->rightshift
;
4913 /* ??? Isn't value unsigned? */
4914 if ((long) value
> 0x1f || (long) value
< -0x10)
4915 return bfd_reloc_overflow
;
4917 /* ??? Value needs to be properly shifted into place first. */
4918 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
4919 bfd_put_16 (input_bfd
, value
, hit_data
);
4920 return bfd_reloc_ok
;
4922 case R_ARM_THM_ALU_PREL_11_0
:
4923 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
4926 bfd_signed_vma relocation
;
4928 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
4929 | bfd_get_16 (input_bfd
, hit_data
+ 2);
4931 if (globals
->use_rel
)
4933 signed_addend
= (insn
& 0xff) | ((insn
& 0x7000) >> 4)
4934 | ((insn
& (1 << 26)) >> 15);
4935 if (insn
& 0xf00000)
4936 signed_addend
= -signed_addend
;
4939 relocation
= value
+ signed_addend
;
4940 relocation
-= (input_section
->output_section
->vma
4941 + input_section
->output_offset
4944 value
= abs (relocation
);
4946 if (value
>= 0x1000)
4947 return bfd_reloc_overflow
;
4949 insn
= (insn
& 0xfb0f8f00) | (value
& 0xff)
4950 | ((value
& 0x700) << 4)
4951 | ((value
& 0x800) << 15);
4955 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4956 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4958 return bfd_reloc_ok
;
4961 case R_ARM_THM_PC12
:
4962 /* Corresponds to: ldr.w reg, [pc, #offset]. */
4965 bfd_signed_vma relocation
;
4967 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
4968 | bfd_get_16 (input_bfd
, hit_data
+ 2);
4970 if (globals
->use_rel
)
4972 signed_addend
= insn
& 0xfff;
4973 if (!(insn
& (1 << 23)))
4974 signed_addend
= -signed_addend
;
4977 relocation
= value
+ signed_addend
;
4978 relocation
-= (input_section
->output_section
->vma
4979 + input_section
->output_offset
4982 value
= abs (relocation
);
4984 if (value
>= 0x1000)
4985 return bfd_reloc_overflow
;
4987 insn
= (insn
& 0xff7ff000) | value
;
4988 if (relocation
>= 0)
4991 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4992 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4994 return bfd_reloc_ok
;
4997 case R_ARM_THM_XPC22
:
4998 case R_ARM_THM_CALL
:
4999 /* Thumb BL (branch long instruction). */
5003 bfd_boolean overflow
= FALSE
;
5004 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
5005 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
5006 bfd_signed_vma reloc_signed_max
;
5007 bfd_signed_vma reloc_signed_min
;
5009 bfd_signed_vma signed_check
;
5011 int thumb2
= using_thumb2 (globals
);
5013 /* A branch to an undefined weak symbol is turned into a jump to
5014 the next instruction. */
5015 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
5017 bfd_put_16 (input_bfd
, 0xe000, hit_data
);
5018 bfd_put_16 (input_bfd
, 0xbf00, hit_data
+ 2);
5019 return bfd_reloc_ok
;
5022 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
5023 with Thumb-1) involving the J1 and J2 bits. */
5024 if (globals
->use_rel
)
5026 bfd_vma s
= (upper_insn
& (1 << 10)) >> 10;
5027 bfd_vma upper
= upper_insn
& 0x3ff;
5028 bfd_vma lower
= lower_insn
& 0x7ff;
5029 bfd_vma j1
= (lower_insn
& (1 << 13)) >> 13;
5030 bfd_vma j2
= (lower_insn
& (1 << 11)) >> 11;
5031 bfd_vma i1
= j1
^ s
? 0 : 1;
5032 bfd_vma i2
= j2
^ s
? 0 : 1;
5034 addend
= (i1
<< 23) | (i2
<< 22) | (upper
<< 12) | (lower
<< 1);
5036 addend
= (addend
| ((s
? 0 : 1) << 24)) - (1 << 24);
5038 signed_addend
= addend
;
5041 if (r_type
== R_ARM_THM_XPC22
)
5043 /* Check for Thumb to Thumb call. */
5044 /* FIXME: Should we translate the instruction into a BL
5045 instruction instead ? */
5046 if (sym_flags
== STT_ARM_TFUNC
)
5047 (*_bfd_error_handler
)
5048 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
5050 h
? h
->root
.root
.string
: "(local)");
5054 /* If it is not a call to Thumb, assume call to Arm.
5055 If it is a call relative to a section name, then it is not a
5056 function call at all, but rather a long jump. Calls through
5057 the PLT do not require stubs. */
5058 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
5059 && (h
== NULL
|| splt
== NULL
5060 || h
->plt
.offset
== (bfd_vma
) -1))
5062 if (globals
->use_blx
)
5064 /* Convert BL to BLX. */
5065 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
5067 else if (elf32_thumb_to_arm_stub
5068 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
5069 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
,
5071 return bfd_reloc_ok
;
5073 return bfd_reloc_dangerous
;
5075 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
)
5077 /* Make sure this is a BL. */
5078 lower_insn
|= 0x1800;
5082 /* Handle calls via the PLT. */
5083 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
5085 value
= (splt
->output_section
->vma
5086 + splt
->output_offset
5088 if (globals
->use_blx
)
5090 /* If the Thumb BLX instruction is available, convert the
5091 BL to a BLX instruction to call the ARM-mode PLT entry. */
5092 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
5095 /* Target the Thumb stub before the ARM PLT entry. */
5096 value
-= PLT_THUMB_STUB_SIZE
;
5097 *unresolved_reloc_p
= FALSE
;
5100 relocation
= value
+ signed_addend
;
5102 relocation
-= (input_section
->output_section
->vma
5103 + input_section
->output_offset
5106 check
= relocation
>> howto
->rightshift
;
5108 /* If this is a signed value, the rightshift just dropped
5109 leading 1 bits (assuming twos complement). */
5110 if ((bfd_signed_vma
) relocation
>= 0)
5111 signed_check
= check
;
5113 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
5115 /* Calculate the permissable maximum and minimum values for
5116 this relocation according to whether we're relocating for
5118 bitsize
= howto
->bitsize
;
5121 reloc_signed_max
= ((1 << (bitsize
- 1)) - 1) >> howto
->rightshift
;
5122 reloc_signed_min
= ~reloc_signed_max
;
5124 /* Assumes two's complement. */
5125 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5128 if ((lower_insn
& 0x1800) == 0x0800)
5129 /* For a BLX instruction, make sure that the relocation is rounded up
5130 to a word boundary. This follows the semantics of the instruction
5131 which specifies that bit 1 of the target address will come from bit
5132 1 of the base address. */
5133 relocation
= (relocation
+ 2) & ~ 3;
5135 /* Put RELOCATION back into the insn. Assumes two's complement.
5136 We use the Thumb-2 encoding, which is safe even if dealing with
5137 a Thumb-1 instruction by virtue of our overflow check above. */
5138 reloc_sign
= (signed_check
< 0) ? 1 : 0;
5139 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff)
5140 | ((relocation
>> 12) & 0x3ff)
5141 | (reloc_sign
<< 10);
5142 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x2fff)
5143 | (((!((relocation
>> 23) & 1)) ^ reloc_sign
) << 13)
5144 | (((!((relocation
>> 22) & 1)) ^ reloc_sign
) << 11)
5145 | ((relocation
>> 1) & 0x7ff);
5147 /* Put the relocated value back in the object file: */
5148 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5149 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5151 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5155 case R_ARM_THM_JUMP24
:
5156 /* Thumb32 unconditional branch instruction. */
5159 bfd_boolean overflow
= FALSE
;
5160 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
5161 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
5162 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
5163 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
5165 bfd_signed_vma signed_check
;
5167 /* Need to refetch the addend, reconstruct the top three bits, and glue the
5168 two pieces together. */
5169 if (globals
->use_rel
)
5171 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
5172 bfd_vma hi
= (upper_insn
& 0x03ff);
5173 bfd_vma I1
= (lower_insn
& 0x2000) >> 13;
5174 bfd_vma I2
= (lower_insn
& 0x0800) >> 11;
5175 bfd_vma lo
= (lower_insn
& 0x07ff);
5181 signed_addend
= (S
<< 24) | (I1
<< 23) | (I2
<< 22) | (hi
<< 12) | (lo
<< 1);
5182 signed_addend
-= (1 << 24); /* Sign extend. */
5185 /* ??? Should handle interworking? GCC might someday try to
5186 use this for tail calls. */
5188 relocation
= value
+ signed_addend
;
5189 relocation
-= (input_section
->output_section
->vma
5190 + input_section
->output_offset
5193 check
= relocation
>> howto
->rightshift
;
5195 /* If this is a signed value, the rightshift just dropped
5196 leading 1 bits (assuming twos complement). */
5197 if ((bfd_signed_vma
) relocation
>= 0)
5198 signed_check
= check
;
5200 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
5202 /* Assumes two's complement. */
5203 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5206 /* Put RELOCATION back into the insn. */
5208 bfd_vma S
= (relocation
& 0x01000000) >> 24;
5209 bfd_vma I1
= (relocation
& 0x00800000) >> 23;
5210 bfd_vma I2
= (relocation
& 0x00400000) >> 22;
5211 bfd_vma hi
= (relocation
& 0x003ff000) >> 12;
5212 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
5217 upper_insn
= (upper_insn
& (bfd_vma
) 0xf800) | (S
<< 10) | hi
;
5218 lower_insn
= (lower_insn
& (bfd_vma
) 0xd000) | (I1
<< 13) | (I2
<< 11) | lo
;
5221 /* Put the relocated value back in the object file: */
5222 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5223 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5225 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5228 case R_ARM_THM_JUMP19
:
5229 /* Thumb32 conditional branch instruction. */
5232 bfd_boolean overflow
= FALSE
;
5233 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
5234 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
5235 bfd_signed_vma reloc_signed_max
= 0xffffe;
5236 bfd_signed_vma reloc_signed_min
= -0x100000;
5237 bfd_signed_vma signed_check
;
5239 /* Need to refetch the addend, reconstruct the top three bits,
5240 and squish the two 11 bit pieces together. */
5241 if (globals
->use_rel
)
5243 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
5244 bfd_vma upper
= (upper_insn
& 0x003f);
5245 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
5246 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
5247 bfd_vma lower
= (lower_insn
& 0x07ff);
5252 upper
-= 0x0100; /* Sign extend. */
5254 addend
= (upper
<< 12) | (lower
<< 1);
5255 signed_addend
= addend
;
5258 /* ??? Should handle interworking? GCC might someday try to
5259 use this for tail calls. */
5261 relocation
= value
+ signed_addend
;
5262 relocation
-= (input_section
->output_section
->vma
5263 + input_section
->output_offset
5265 signed_check
= (bfd_signed_vma
) relocation
;
5267 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5270 /* Put RELOCATION back into the insn. */
5272 bfd_vma S
= (relocation
& 0x00100000) >> 20;
5273 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
5274 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
5275 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
5276 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
5278 upper_insn
= (upper_insn
& 0xfbc0) | (S
<< 10) | hi
;
5279 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
5282 /* Put the relocated value back in the object file: */
5283 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5284 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5286 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5289 case R_ARM_THM_JUMP11
:
5290 case R_ARM_THM_JUMP8
:
5291 case R_ARM_THM_JUMP6
:
5292 /* Thumb B (branch) instruction). */
5294 bfd_signed_vma relocation
;
5295 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
5296 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
5297 bfd_signed_vma signed_check
;
5299 /* CZB cannot jump backward. */
5300 if (r_type
== R_ARM_THM_JUMP6
)
5301 reloc_signed_min
= 0;
5303 if (globals
->use_rel
)
5305 /* Need to refetch addend. */
5306 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
5307 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5310 signed_addend
&= ~ howto
->src_mask
;
5311 signed_addend
|= addend
;
5314 signed_addend
= addend
;
5315 /* The value in the insn has been right shifted. We need to
5316 undo this, so that we can perform the address calculation
5317 in terms of bytes. */
5318 signed_addend
<<= howto
->rightshift
;
5320 relocation
= value
+ signed_addend
;
5322 relocation
-= (input_section
->output_section
->vma
5323 + input_section
->output_offset
5326 relocation
>>= howto
->rightshift
;
5327 signed_check
= relocation
;
5329 if (r_type
== R_ARM_THM_JUMP6
)
5330 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
5332 relocation
&= howto
->dst_mask
;
5333 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
5335 bfd_put_16 (input_bfd
, relocation
, hit_data
);
5337 /* Assumes two's complement. */
5338 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5339 return bfd_reloc_overflow
;
5341 return bfd_reloc_ok
;
5344 case R_ARM_ALU_PCREL7_0
:
5345 case R_ARM_ALU_PCREL15_8
:
5346 case R_ARM_ALU_PCREL23_15
:
5351 insn
= bfd_get_32 (input_bfd
, hit_data
);
5352 if (globals
->use_rel
)
5354 /* Extract the addend. */
5355 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
5356 signed_addend
= addend
;
5358 relocation
= value
+ signed_addend
;
5360 relocation
-= (input_section
->output_section
->vma
5361 + input_section
->output_offset
5363 insn
= (insn
& ~0xfff)
5364 | ((howto
->bitpos
<< 7) & 0xf00)
5365 | ((relocation
>> howto
->bitpos
) & 0xff);
5366 bfd_put_32 (input_bfd
, value
, hit_data
);
5368 return bfd_reloc_ok
;
5370 case R_ARM_GNU_VTINHERIT
:
5371 case R_ARM_GNU_VTENTRY
:
5372 return bfd_reloc_ok
;
5374 case R_ARM_GOTOFF32
:
5375 /* Relocation is relative to the start of the
5376 global offset table. */
5378 BFD_ASSERT (sgot
!= NULL
);
5380 return bfd_reloc_notsupported
;
5382 /* If we are addressing a Thumb function, we need to adjust the
5383 address by one, so that attempts to call the function pointer will
5384 correctly interpret it as Thumb code. */
5385 if (sym_flags
== STT_ARM_TFUNC
)
5388 /* Note that sgot->output_offset is not involved in this
5389 calculation. We always want the start of .got. If we
5390 define _GLOBAL_OFFSET_TABLE in a different way, as is
5391 permitted by the ABI, we might have to change this
5393 value
-= sgot
->output_section
->vma
;
5394 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5395 contents
, rel
->r_offset
, value
,
5399 /* Use global offset table as symbol value. */
5400 BFD_ASSERT (sgot
!= NULL
);
5403 return bfd_reloc_notsupported
;
5405 *unresolved_reloc_p
= FALSE
;
5406 value
= sgot
->output_section
->vma
;
5407 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5408 contents
, rel
->r_offset
, value
,
5412 case R_ARM_GOT_PREL
:
5413 /* Relocation is to the entry for this symbol in the
5414 global offset table. */
5416 return bfd_reloc_notsupported
;
5423 off
= h
->got
.offset
;
5424 BFD_ASSERT (off
!= (bfd_vma
) -1);
5425 dyn
= globals
->root
.dynamic_sections_created
;
5427 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
5429 && SYMBOL_REFERENCES_LOCAL (info
, h
))
5430 || (ELF_ST_VISIBILITY (h
->other
)
5431 && h
->root
.type
== bfd_link_hash_undefweak
))
5433 /* This is actually a static link, or it is a -Bsymbolic link
5434 and the symbol is defined locally. We must initialize this
5435 entry in the global offset table. Since the offset must
5436 always be a multiple of 4, we use the least significant bit
5437 to record whether we have initialized it already.
5439 When doing a dynamic link, we create a .rel(a).got relocation
5440 entry to initialize the value. This is done in the
5441 finish_dynamic_symbol routine. */
5446 /* If we are addressing a Thumb function, we need to
5447 adjust the address by one, so that attempts to
5448 call the function pointer will correctly
5449 interpret it as Thumb code. */
5450 if (sym_flags
== STT_ARM_TFUNC
)
5453 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
5458 *unresolved_reloc_p
= FALSE
;
5460 value
= sgot
->output_offset
+ off
;
5466 BFD_ASSERT (local_got_offsets
!= NULL
&&
5467 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
5469 off
= local_got_offsets
[r_symndx
];
5471 /* The offset must always be a multiple of 4. We use the
5472 least significant bit to record whether we have already
5473 generated the necessary reloc. */
5478 /* If we are addressing a Thumb function, we need to
5479 adjust the address by one, so that attempts to
5480 call the function pointer will correctly
5481 interpret it as Thumb code. */
5482 if (sym_flags
== STT_ARM_TFUNC
)
5485 if (globals
->use_rel
)
5486 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
5491 Elf_Internal_Rela outrel
;
5494 srelgot
= (bfd_get_section_by_name
5495 (dynobj
, RELOC_SECTION (globals
, ".got")));
5496 BFD_ASSERT (srelgot
!= NULL
);
5498 outrel
.r_addend
= addend
+ value
;
5499 outrel
.r_offset
= (sgot
->output_section
->vma
5500 + sgot
->output_offset
5502 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
5503 loc
= srelgot
->contents
;
5504 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
5505 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5508 local_got_offsets
[r_symndx
] |= 1;
5511 value
= sgot
->output_offset
+ off
;
5513 if (r_type
!= R_ARM_GOT32
)
5514 value
+= sgot
->output_section
->vma
;
5516 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5517 contents
, rel
->r_offset
, value
,
5520 case R_ARM_TLS_LDO32
:
5521 value
= value
- dtpoff_base (info
);
5523 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5524 contents
, rel
->r_offset
, value
,
5527 case R_ARM_TLS_LDM32
:
5531 if (globals
->sgot
== NULL
)
5534 off
= globals
->tls_ldm_got
.offset
;
5540 /* If we don't know the module number, create a relocation
5544 Elf_Internal_Rela outrel
;
5547 if (globals
->srelgot
== NULL
)
5550 outrel
.r_addend
= 0;
5551 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5552 + globals
->sgot
->output_offset
+ off
);
5553 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
5555 if (globals
->use_rel
)
5556 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5557 globals
->sgot
->contents
+ off
);
5559 loc
= globals
->srelgot
->contents
;
5560 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
5561 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5564 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
5566 globals
->tls_ldm_got
.offset
|= 1;
5569 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
5570 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
5572 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5573 contents
, rel
->r_offset
, value
,
5577 case R_ARM_TLS_GD32
:
5578 case R_ARM_TLS_IE32
:
5584 if (globals
->sgot
== NULL
)
5591 dyn
= globals
->root
.dynamic_sections_created
;
5592 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
5594 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
5596 *unresolved_reloc_p
= FALSE
;
5599 off
= h
->got
.offset
;
5600 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
5604 if (local_got_offsets
== NULL
)
5606 off
= local_got_offsets
[r_symndx
];
5607 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
5610 if (tls_type
== GOT_UNKNOWN
)
5617 bfd_boolean need_relocs
= FALSE
;
5618 Elf_Internal_Rela outrel
;
5619 bfd_byte
*loc
= NULL
;
5622 /* The GOT entries have not been initialized yet. Do it
5623 now, and emit any relocations. If both an IE GOT and a
5624 GD GOT are necessary, we emit the GD first. */
5626 if ((info
->shared
|| indx
!= 0)
5628 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5629 || h
->root
.type
!= bfd_link_hash_undefweak
))
5632 if (globals
->srelgot
== NULL
)
5634 loc
= globals
->srelgot
->contents
;
5635 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
5638 if (tls_type
& GOT_TLS_GD
)
5642 outrel
.r_addend
= 0;
5643 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5644 + globals
->sgot
->output_offset
5646 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
5648 if (globals
->use_rel
)
5649 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5650 globals
->sgot
->contents
+ cur_off
);
5652 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5653 globals
->srelgot
->reloc_count
++;
5654 loc
+= RELOC_SIZE (globals
);
5657 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
5658 globals
->sgot
->contents
+ cur_off
+ 4);
5661 outrel
.r_addend
= 0;
5662 outrel
.r_info
= ELF32_R_INFO (indx
,
5663 R_ARM_TLS_DTPOFF32
);
5664 outrel
.r_offset
+= 4;
5666 if (globals
->use_rel
)
5667 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5668 globals
->sgot
->contents
+ cur_off
+ 4);
5671 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5672 globals
->srelgot
->reloc_count
++;
5673 loc
+= RELOC_SIZE (globals
);
5678 /* If we are not emitting relocations for a
5679 general dynamic reference, then we must be in a
5680 static link or an executable link with the
5681 symbol binding locally. Mark it as belonging
5682 to module 1, the executable. */
5683 bfd_put_32 (output_bfd
, 1,
5684 globals
->sgot
->contents
+ cur_off
);
5685 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
5686 globals
->sgot
->contents
+ cur_off
+ 4);
5692 if (tls_type
& GOT_TLS_IE
)
5697 outrel
.r_addend
= value
- dtpoff_base (info
);
5699 outrel
.r_addend
= 0;
5700 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5701 + globals
->sgot
->output_offset
5703 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
5705 if (globals
->use_rel
)
5706 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5707 globals
->sgot
->contents
+ cur_off
);
5709 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5710 globals
->srelgot
->reloc_count
++;
5711 loc
+= RELOC_SIZE (globals
);
5714 bfd_put_32 (output_bfd
, tpoff (info
, value
),
5715 globals
->sgot
->contents
+ cur_off
);
5722 local_got_offsets
[r_symndx
] |= 1;
5725 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
5727 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
5728 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
5730 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5731 contents
, rel
->r_offset
, value
,
5735 case R_ARM_TLS_LE32
:
5738 (*_bfd_error_handler
)
5739 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
5740 input_bfd
, input_section
,
5741 (long) rel
->r_offset
, howto
->name
);
5745 value
= tpoff (info
, value
);
5747 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5748 contents
, rel
->r_offset
, value
,
5752 if (globals
->fix_v4bx
)
5754 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5756 /* Ensure that we have a BX instruction. */
5757 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
5759 /* Preserve Rm (lowest four bits) and the condition code
5760 (highest four bits). Other bits encode MOV PC,Rm. */
5761 insn
= (insn
& 0xf000000f) | 0x01a0f000;
5763 bfd_put_32 (input_bfd
, insn
, hit_data
);
5765 return bfd_reloc_ok
;
5767 case R_ARM_MOVW_ABS_NC
:
5768 case R_ARM_MOVT_ABS
:
5769 case R_ARM_MOVW_PREL_NC
:
5770 case R_ARM_MOVT_PREL
:
5771 /* Until we properly support segment-base-relative addressing then
5772 we assume the segment base to be zero, as for the group relocations.
5773 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
5774 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
5775 case R_ARM_MOVW_BREL_NC
:
5776 case R_ARM_MOVW_BREL
:
5777 case R_ARM_MOVT_BREL
:
5779 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5781 if (globals
->use_rel
)
5783 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
5784 signed_addend
= (addend
^ 0x10000) - 0x10000;
5787 value
+= signed_addend
;
5789 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
5790 value
-= (input_section
->output_section
->vma
5791 + input_section
->output_offset
+ rel
->r_offset
);
5793 if (r_type
== R_ARM_MOVW_BREL
&& value
>= 0x10000)
5794 return bfd_reloc_overflow
;
5796 if (sym_flags
== STT_ARM_TFUNC
)
5799 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
5800 || r_type
== R_ARM_MOVT_BREL
)
5804 insn
|= value
& 0xfff;
5805 insn
|= (value
& 0xf000) << 4;
5806 bfd_put_32 (input_bfd
, insn
, hit_data
);
5808 return bfd_reloc_ok
;
5810 case R_ARM_THM_MOVW_ABS_NC
:
5811 case R_ARM_THM_MOVT_ABS
:
5812 case R_ARM_THM_MOVW_PREL_NC
:
5813 case R_ARM_THM_MOVT_PREL
:
5814 /* Until we properly support segment-base-relative addressing then
5815 we assume the segment base to be zero, as for the above relocations.
5816 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
5817 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
5818 as R_ARM_THM_MOVT_ABS. */
5819 case R_ARM_THM_MOVW_BREL_NC
:
5820 case R_ARM_THM_MOVW_BREL
:
5821 case R_ARM_THM_MOVT_BREL
:
5825 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
5826 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
5828 if (globals
->use_rel
)
5830 addend
= ((insn
>> 4) & 0xf000)
5831 | ((insn
>> 15) & 0x0800)
5832 | ((insn
>> 4) & 0x0700)
5834 signed_addend
= (addend
^ 0x10000) - 0x10000;
5837 value
+= signed_addend
;
5839 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
5840 value
-= (input_section
->output_section
->vma
5841 + input_section
->output_offset
+ rel
->r_offset
);
5843 if (r_type
== R_ARM_THM_MOVW_BREL
&& value
>= 0x10000)
5844 return bfd_reloc_overflow
;
5846 if (sym_flags
== STT_ARM_TFUNC
)
5849 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
5850 || r_type
== R_ARM_THM_MOVT_BREL
)
5854 insn
|= (value
& 0xf000) << 4;
5855 insn
|= (value
& 0x0800) << 15;
5856 insn
|= (value
& 0x0700) << 4;
5857 insn
|= (value
& 0x00ff);
5859 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
5860 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
5862 return bfd_reloc_ok
;
5864 case R_ARM_ALU_PC_G0_NC
:
5865 case R_ARM_ALU_PC_G1_NC
:
5866 case R_ARM_ALU_PC_G0
:
5867 case R_ARM_ALU_PC_G1
:
5868 case R_ARM_ALU_PC_G2
:
5869 case R_ARM_ALU_SB_G0_NC
:
5870 case R_ARM_ALU_SB_G1_NC
:
5871 case R_ARM_ALU_SB_G0
:
5872 case R_ARM_ALU_SB_G1
:
5873 case R_ARM_ALU_SB_G2
:
5875 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5876 bfd_vma pc
= input_section
->output_section
->vma
5877 + input_section
->output_offset
+ rel
->r_offset
;
5878 /* sb should be the origin of the *segment* containing the symbol.
5879 It is not clear how to obtain this OS-dependent value, so we
5880 make an arbitrary choice of zero. */
5884 bfd_signed_vma signed_value
;
5887 /* Determine which group of bits to select. */
5890 case R_ARM_ALU_PC_G0_NC
:
5891 case R_ARM_ALU_PC_G0
:
5892 case R_ARM_ALU_SB_G0_NC
:
5893 case R_ARM_ALU_SB_G0
:
5897 case R_ARM_ALU_PC_G1_NC
:
5898 case R_ARM_ALU_PC_G1
:
5899 case R_ARM_ALU_SB_G1_NC
:
5900 case R_ARM_ALU_SB_G1
:
5904 case R_ARM_ALU_PC_G2
:
5905 case R_ARM_ALU_SB_G2
:
5913 /* If REL, extract the addend from the insn. If RELA, it will
5914 have already been fetched for us. */
5915 if (globals
->use_rel
)
5918 bfd_vma constant
= insn
& 0xff;
5919 bfd_vma rotation
= (insn
& 0xf00) >> 8;
5922 signed_addend
= constant
;
5925 /* Compensate for the fact that in the instruction, the
5926 rotation is stored in multiples of 2 bits. */
5929 /* Rotate "constant" right by "rotation" bits. */
5930 signed_addend
= (constant
>> rotation
) |
5931 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
5934 /* Determine if the instruction is an ADD or a SUB.
5935 (For REL, this determines the sign of the addend.) */
5936 negative
= identify_add_or_sub (insn
);
5939 (*_bfd_error_handler
)
5940 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
5941 input_bfd
, input_section
,
5942 (long) rel
->r_offset
, howto
->name
);
5943 return bfd_reloc_overflow
;
5946 signed_addend
*= negative
;
5949 /* Compute the value (X) to go in the place. */
5950 if (r_type
== R_ARM_ALU_PC_G0_NC
5951 || r_type
== R_ARM_ALU_PC_G1_NC
5952 || r_type
== R_ARM_ALU_PC_G0
5953 || r_type
== R_ARM_ALU_PC_G1
5954 || r_type
== R_ARM_ALU_PC_G2
)
5956 signed_value
= value
- pc
+ signed_addend
;
5958 /* Section base relative. */
5959 signed_value
= value
- sb
+ signed_addend
;
5961 /* If the target symbol is a Thumb function, then set the
5962 Thumb bit in the address. */
5963 if (sym_flags
== STT_ARM_TFUNC
)
5966 /* Calculate the value of the relevant G_n, in encoded
5967 constant-with-rotation format. */
5968 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
5971 /* Check for overflow if required. */
5972 if ((r_type
== R_ARM_ALU_PC_G0
5973 || r_type
== R_ARM_ALU_PC_G1
5974 || r_type
== R_ARM_ALU_PC_G2
5975 || r_type
== R_ARM_ALU_SB_G0
5976 || r_type
== R_ARM_ALU_SB_G1
5977 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
5979 (*_bfd_error_handler
)
5980 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5981 input_bfd
, input_section
,
5982 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5983 return bfd_reloc_overflow
;
5986 /* Mask out the value and the ADD/SUB part of the opcode; take care
5987 not to destroy the S bit. */
5990 /* Set the opcode according to whether the value to go in the
5991 place is negative. */
5992 if (signed_value
< 0)
5997 /* Encode the offset. */
6000 bfd_put_32 (input_bfd
, insn
, hit_data
);
6002 return bfd_reloc_ok
;
6004 case R_ARM_LDR_PC_G0
:
6005 case R_ARM_LDR_PC_G1
:
6006 case R_ARM_LDR_PC_G2
:
6007 case R_ARM_LDR_SB_G0
:
6008 case R_ARM_LDR_SB_G1
:
6009 case R_ARM_LDR_SB_G2
:
6011 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6012 bfd_vma pc
= input_section
->output_section
->vma
6013 + input_section
->output_offset
+ rel
->r_offset
;
6014 bfd_vma sb
= 0; /* See note above. */
6016 bfd_signed_vma signed_value
;
6019 /* Determine which groups of bits to calculate. */
6022 case R_ARM_LDR_PC_G0
:
6023 case R_ARM_LDR_SB_G0
:
6027 case R_ARM_LDR_PC_G1
:
6028 case R_ARM_LDR_SB_G1
:
6032 case R_ARM_LDR_PC_G2
:
6033 case R_ARM_LDR_SB_G2
:
6041 /* If REL, extract the addend from the insn. If RELA, it will
6042 have already been fetched for us. */
6043 if (globals
->use_rel
)
6045 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6046 signed_addend
= negative
* (insn
& 0xfff);
6049 /* Compute the value (X) to go in the place. */
6050 if (r_type
== R_ARM_LDR_PC_G0
6051 || r_type
== R_ARM_LDR_PC_G1
6052 || r_type
== R_ARM_LDR_PC_G2
)
6054 signed_value
= value
- pc
+ signed_addend
;
6056 /* Section base relative. */
6057 signed_value
= value
- sb
+ signed_addend
;
6059 /* Calculate the value of the relevant G_{n-1} to obtain
6060 the residual at that stage. */
6061 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6063 /* Check for overflow. */
6064 if (residual
>= 0x1000)
6066 (*_bfd_error_handler
)
6067 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6068 input_bfd
, input_section
,
6069 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6070 return bfd_reloc_overflow
;
6073 /* Mask out the value and U bit. */
6076 /* Set the U bit if the value to go in the place is non-negative. */
6077 if (signed_value
>= 0)
6080 /* Encode the offset. */
6083 bfd_put_32 (input_bfd
, insn
, hit_data
);
6085 return bfd_reloc_ok
;
6087 case R_ARM_LDRS_PC_G0
:
6088 case R_ARM_LDRS_PC_G1
:
6089 case R_ARM_LDRS_PC_G2
:
6090 case R_ARM_LDRS_SB_G0
:
6091 case R_ARM_LDRS_SB_G1
:
6092 case R_ARM_LDRS_SB_G2
:
6094 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6095 bfd_vma pc
= input_section
->output_section
->vma
6096 + input_section
->output_offset
+ rel
->r_offset
;
6097 bfd_vma sb
= 0; /* See note above. */
6099 bfd_signed_vma signed_value
;
6102 /* Determine which groups of bits to calculate. */
6105 case R_ARM_LDRS_PC_G0
:
6106 case R_ARM_LDRS_SB_G0
:
6110 case R_ARM_LDRS_PC_G1
:
6111 case R_ARM_LDRS_SB_G1
:
6115 case R_ARM_LDRS_PC_G2
:
6116 case R_ARM_LDRS_SB_G2
:
6124 /* If REL, extract the addend from the insn. If RELA, it will
6125 have already been fetched for us. */
6126 if (globals
->use_rel
)
6128 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6129 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
6132 /* Compute the value (X) to go in the place. */
6133 if (r_type
== R_ARM_LDRS_PC_G0
6134 || r_type
== R_ARM_LDRS_PC_G1
6135 || r_type
== R_ARM_LDRS_PC_G2
)
6137 signed_value
= value
- pc
+ signed_addend
;
6139 /* Section base relative. */
6140 signed_value
= value
- sb
+ signed_addend
;
6142 /* Calculate the value of the relevant G_{n-1} to obtain
6143 the residual at that stage. */
6144 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6146 /* Check for overflow. */
6147 if (residual
>= 0x100)
6149 (*_bfd_error_handler
)
6150 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6151 input_bfd
, input_section
,
6152 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6153 return bfd_reloc_overflow
;
6156 /* Mask out the value and U bit. */
6159 /* Set the U bit if the value to go in the place is non-negative. */
6160 if (signed_value
>= 0)
6163 /* Encode the offset. */
6164 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
6166 bfd_put_32 (input_bfd
, insn
, hit_data
);
6168 return bfd_reloc_ok
;
6170 case R_ARM_LDC_PC_G0
:
6171 case R_ARM_LDC_PC_G1
:
6172 case R_ARM_LDC_PC_G2
:
6173 case R_ARM_LDC_SB_G0
:
6174 case R_ARM_LDC_SB_G1
:
6175 case R_ARM_LDC_SB_G2
:
6177 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6178 bfd_vma pc
= input_section
->output_section
->vma
6179 + input_section
->output_offset
+ rel
->r_offset
;
6180 bfd_vma sb
= 0; /* See note above. */
6182 bfd_signed_vma signed_value
;
6185 /* Determine which groups of bits to calculate. */
6188 case R_ARM_LDC_PC_G0
:
6189 case R_ARM_LDC_SB_G0
:
6193 case R_ARM_LDC_PC_G1
:
6194 case R_ARM_LDC_SB_G1
:
6198 case R_ARM_LDC_PC_G2
:
6199 case R_ARM_LDC_SB_G2
:
6207 /* If REL, extract the addend from the insn. If RELA, it will
6208 have already been fetched for us. */
6209 if (globals
->use_rel
)
6211 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6212 signed_addend
= negative
* ((insn
& 0xff) << 2);
6215 /* Compute the value (X) to go in the place. */
6216 if (r_type
== R_ARM_LDC_PC_G0
6217 || r_type
== R_ARM_LDC_PC_G1
6218 || r_type
== R_ARM_LDC_PC_G2
)
6220 signed_value
= value
- pc
+ signed_addend
;
6222 /* Section base relative. */
6223 signed_value
= value
- sb
+ signed_addend
;
6225 /* Calculate the value of the relevant G_{n-1} to obtain
6226 the residual at that stage. */
6227 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6229 /* Check for overflow. (The absolute value to go in the place must be
6230 divisible by four and, after having been divided by four, must
6231 fit in eight bits.) */
6232 if ((residual
& 0x3) != 0 || residual
>= 0x400)
6234 (*_bfd_error_handler
)
6235 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6236 input_bfd
, input_section
,
6237 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6238 return bfd_reloc_overflow
;
6241 /* Mask out the value and U bit. */
6244 /* Set the U bit if the value to go in the place is non-negative. */
6245 if (signed_value
>= 0)
6248 /* Encode the offset. */
6249 insn
|= residual
>> 2;
6251 bfd_put_32 (input_bfd
, insn
, hit_data
);
6253 return bfd_reloc_ok
;
6256 return bfd_reloc_notsupported
;
6260 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
6262 arm_add_to_rel (bfd
* abfd
,
6264 reloc_howto_type
* howto
,
6265 bfd_signed_vma increment
)
6267 bfd_signed_vma addend
;
6269 if (howto
->type
== R_ARM_THM_CALL
)
6271 int upper_insn
, lower_insn
;
6274 upper_insn
= bfd_get_16 (abfd
, address
);
6275 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
6276 upper
= upper_insn
& 0x7ff;
6277 lower
= lower_insn
& 0x7ff;
6279 addend
= (upper
<< 12) | (lower
<< 1);
6280 addend
+= increment
;
6283 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
6284 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
6286 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
6287 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
6293 contents
= bfd_get_32 (abfd
, address
);
6295 /* Get the (signed) value from the instruction. */
6296 addend
= contents
& howto
->src_mask
;
6297 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6299 bfd_signed_vma mask
;
6302 mask
&= ~ howto
->src_mask
;
6306 /* Add in the increment, (which is a byte value). */
6307 switch (howto
->type
)
6310 addend
+= increment
;
6317 addend
<<= howto
->size
;
6318 addend
+= increment
;
6320 /* Should we check for overflow here ? */
6322 /* Drop any undesired bits. */
6323 addend
>>= howto
->rightshift
;
6327 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
6329 bfd_put_32 (abfd
, contents
, address
);
6333 #define IS_ARM_TLS_RELOC(R_TYPE) \
6334 ((R_TYPE) == R_ARM_TLS_GD32 \
6335 || (R_TYPE) == R_ARM_TLS_LDO32 \
6336 || (R_TYPE) == R_ARM_TLS_LDM32 \
6337 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
6338 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
6339 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
6340 || (R_TYPE) == R_ARM_TLS_LE32 \
6341 || (R_TYPE) == R_ARM_TLS_IE32)
6343 /* Relocate an ARM ELF section. */
6345 elf32_arm_relocate_section (bfd
* output_bfd
,
6346 struct bfd_link_info
* info
,
6348 asection
* input_section
,
6349 bfd_byte
* contents
,
6350 Elf_Internal_Rela
* relocs
,
6351 Elf_Internal_Sym
* local_syms
,
6352 asection
** local_sections
)
6354 Elf_Internal_Shdr
*symtab_hdr
;
6355 struct elf_link_hash_entry
**sym_hashes
;
6356 Elf_Internal_Rela
*rel
;
6357 Elf_Internal_Rela
*relend
;
6359 struct elf32_arm_link_hash_table
* globals
;
6361 globals
= elf32_arm_hash_table (info
);
6363 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
6364 sym_hashes
= elf_sym_hashes (input_bfd
);
6367 relend
= relocs
+ input_section
->reloc_count
;
6368 for (; rel
< relend
; rel
++)
6371 reloc_howto_type
* howto
;
6372 unsigned long r_symndx
;
6373 Elf_Internal_Sym
* sym
;
6375 struct elf_link_hash_entry
* h
;
6377 bfd_reloc_status_type r
;
6380 bfd_boolean unresolved_reloc
= FALSE
;
6381 char *error_message
= NULL
;
6383 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6384 r_type
= ELF32_R_TYPE (rel
->r_info
);
6385 r_type
= arm_real_reloc_type (globals
, r_type
);
6387 if ( r_type
== R_ARM_GNU_VTENTRY
6388 || r_type
== R_ARM_GNU_VTINHERIT
)
6391 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
6392 howto
= bfd_reloc
.howto
;
6398 if (r_symndx
< symtab_hdr
->sh_info
)
6400 sym
= local_syms
+ r_symndx
;
6401 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
6402 sec
= local_sections
[r_symndx
];
6403 if (globals
->use_rel
)
6405 relocation
= (sec
->output_section
->vma
6406 + sec
->output_offset
6408 if (!info
->relocatable
6409 && (sec
->flags
& SEC_MERGE
)
6410 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
6413 bfd_vma addend
, value
;
6415 if (howto
->rightshift
)
6417 (*_bfd_error_handler
)
6418 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
6419 input_bfd
, input_section
,
6420 (long) rel
->r_offset
, howto
->name
);
6424 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
6426 /* Get the (signed) value from the instruction. */
6427 addend
= value
& howto
->src_mask
;
6428 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6430 bfd_signed_vma mask
;
6433 mask
&= ~ howto
->src_mask
;
6438 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
6440 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
6441 value
= (value
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
6442 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
6446 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6452 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6453 r_symndx
, symtab_hdr
, sym_hashes
,
6455 unresolved_reloc
, warned
);
6460 if (sec
!= NULL
&& elf_discarded_section (sec
))
6462 /* For relocs against symbols from removed linkonce sections,
6463 or sections discarded by a linker script, we just want the
6464 section contents zeroed. Avoid any special processing. */
6465 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
6471 if (info
->relocatable
)
6473 /* This is a relocatable link. We don't have to change
6474 anything, unless the reloc is against a section symbol,
6475 in which case we have to adjust according to where the
6476 section symbol winds up in the output section. */
6477 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
6479 if (globals
->use_rel
)
6480 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
6481 howto
, (bfd_signed_vma
) sec
->output_offset
);
6483 rel
->r_addend
+= sec
->output_offset
;
6489 name
= h
->root
.root
.string
;
6492 name
= (bfd_elf_string_from_elf_section
6493 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
6494 if (name
== NULL
|| *name
== '\0')
6495 name
= bfd_section_name (input_bfd
, sec
);
6499 && r_type
!= R_ARM_NONE
6501 || h
->root
.type
== bfd_link_hash_defined
6502 || h
->root
.type
== bfd_link_hash_defweak
)
6503 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
6505 (*_bfd_error_handler
)
6506 ((sym_type
== STT_TLS
6507 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6508 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6511 (long) rel
->r_offset
,
6516 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
6517 input_section
, contents
, rel
,
6518 relocation
, info
, sec
, name
,
6519 (h
? ELF_ST_TYPE (h
->type
) :
6520 ELF_ST_TYPE (sym
->st_info
)), h
,
6521 &unresolved_reloc
, &error_message
);
6523 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6524 because such sections are not SEC_ALLOC and thus ld.so will
6525 not process them. */
6526 if (unresolved_reloc
6527 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
6530 (*_bfd_error_handler
)
6531 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6534 (long) rel
->r_offset
,
6536 h
->root
.root
.string
);
6540 if (r
!= bfd_reloc_ok
)
6544 case bfd_reloc_overflow
:
6545 /* If the overflowing reloc was to an undefined symbol,
6546 we have already printed one error message and there
6547 is no point complaining again. */
6549 h
->root
.type
!= bfd_link_hash_undefined
)
6550 && (!((*info
->callbacks
->reloc_overflow
)
6551 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
6552 (bfd_vma
) 0, input_bfd
, input_section
,
6557 case bfd_reloc_undefined
:
6558 if (!((*info
->callbacks
->undefined_symbol
)
6559 (info
, name
, input_bfd
, input_section
,
6560 rel
->r_offset
, TRUE
)))
6564 case bfd_reloc_outofrange
:
6565 error_message
= _("out of range");
6568 case bfd_reloc_notsupported
:
6569 error_message
= _("unsupported relocation");
6572 case bfd_reloc_dangerous
:
6573 /* error_message should already be set. */
6577 error_message
= _("unknown error");
6581 BFD_ASSERT (error_message
!= NULL
);
6582 if (!((*info
->callbacks
->reloc_dangerous
)
6583 (info
, error_message
, input_bfd
, input_section
,
6594 /* Set the right machine number. */
6597 elf32_arm_object_p (bfd
*abfd
)
6601 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
6603 if (mach
!= bfd_mach_arm_unknown
)
6604 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
6606 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
6607 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
6610 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
6615 /* Function to keep ARM specific flags in the ELF header. */
6618 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
6620 if (elf_flags_init (abfd
)
6621 && elf_elfheader (abfd
)->e_flags
!= flags
)
6623 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
6625 if (flags
& EF_ARM_INTERWORK
)
6626 (*_bfd_error_handler
)
6627 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
6631 (_("Warning: Clearing the interworking flag of %B due to outside request"),
6637 elf_elfheader (abfd
)->e_flags
= flags
;
6638 elf_flags_init (abfd
) = TRUE
;
6644 /* Copy backend specific data from one object module to another. */
6647 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
6652 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
6653 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
6656 in_flags
= elf_elfheader (ibfd
)->e_flags
;
6657 out_flags
= elf_elfheader (obfd
)->e_flags
;
6659 if (elf_flags_init (obfd
)
6660 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
6661 && in_flags
!= out_flags
)
6663 /* Cannot mix APCS26 and APCS32 code. */
6664 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
6667 /* Cannot mix float APCS and non-float APCS code. */
6668 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
6671 /* If the src and dest have different interworking flags
6672 then turn off the interworking bit. */
6673 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
6675 if (out_flags
& EF_ARM_INTERWORK
)
6677 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
6680 in_flags
&= ~EF_ARM_INTERWORK
;
6683 /* Likewise for PIC, though don't warn for this case. */
6684 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
6685 in_flags
&= ~EF_ARM_PIC
;
6688 elf_elfheader (obfd
)->e_flags
= in_flags
;
6689 elf_flags_init (obfd
) = TRUE
;
6691 /* Also copy the EI_OSABI field. */
6692 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
6693 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
6695 /* Copy object attributes. */
6696 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
6701 /* Values for Tag_ABI_PCS_R9_use. */
6710 /* Values for Tag_ABI_PCS_RW_data. */
6713 AEABI_PCS_RW_data_absolute
,
6714 AEABI_PCS_RW_data_PCrel
,
6715 AEABI_PCS_RW_data_SBrel
,
6716 AEABI_PCS_RW_data_unused
6719 /* Values for Tag_ABI_enum_size. */
6725 AEABI_enum_forced_wide
6728 /* Determine whether an object attribute tag takes an integer, a
6731 elf32_arm_obj_attrs_arg_type (int tag
)
6733 if (tag
== Tag_compatibility
)
6735 else if (tag
== 4 || tag
== 5)
6740 return (tag
& 1) != 0 ? 2 : 1;
6743 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
6744 are conflicting attributes. */
6746 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
6748 obj_attribute
*in_attr
;
6749 obj_attribute
*out_attr
;
6750 obj_attribute_list
*in_list
;
6751 /* Some tags have 0 = don't care, 1 = strong requirement,
6752 2 = weak requirement. */
6753 static const int order_312
[3] = {3, 1, 2};
6756 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
6758 /* This is the first object. Copy the attributes. */
6759 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
6761 /* Use the Tag_null value to indicate the attributes have been
6763 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
6768 in_attr
= elf_known_obj_attributes_proc (ibfd
);
6769 out_attr
= elf_known_obj_attributes_proc (obfd
);
6770 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
6771 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
6773 /* Ignore mismatches if teh object doesn't use floating point. */
6774 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
6775 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
6776 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
6779 (_("ERROR: %B uses VFP register arguments, %B does not"),
6785 for (i
= 4; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
6787 /* Merge this attribute with existing attributes. */
6790 case Tag_CPU_raw_name
:
6792 /* Use whichever has the greatest architecture requirements. We
6793 won't necessarily have both the above tags, so make sure input
6794 name is non-NULL. */
6795 if (in_attr
[Tag_CPU_arch
].i
> out_attr
[Tag_CPU_arch
].i
6797 out_attr
[i
].s
= _bfd_elf_attr_strdup (obfd
, in_attr
[i
].s
);
6800 case Tag_ABI_optimization_goals
:
6801 case Tag_ABI_FP_optimization_goals
:
6802 /* Use the first value seen. */
6806 case Tag_ARM_ISA_use
:
6807 case Tag_THUMB_ISA_use
:
6811 /* ??? Do NEON and WMMX conflict? */
6812 case Tag_ABI_FP_rounding
:
6813 case Tag_ABI_FP_denormal
:
6814 case Tag_ABI_FP_exceptions
:
6815 case Tag_ABI_FP_user_exceptions
:
6816 case Tag_ABI_FP_number_model
:
6817 case Tag_ABI_align8_preserved
:
6818 case Tag_ABI_HardFP_use
:
6819 /* Use the largest value specified. */
6820 if (in_attr
[i
].i
> out_attr
[i
].i
)
6821 out_attr
[i
].i
= in_attr
[i
].i
;
6824 case Tag_CPU_arch_profile
:
6825 /* Warn if conflicting architecture profiles used. */
6826 if (out_attr
[i
].i
&& in_attr
[i
].i
&& in_attr
[i
].i
!= out_attr
[i
].i
)
6829 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
6830 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
6834 out_attr
[i
].i
= in_attr
[i
].i
;
6836 case Tag_PCS_config
:
6837 if (out_attr
[i
].i
== 0)
6838 out_attr
[i
].i
= in_attr
[i
].i
;
6839 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
6841 /* It's sometimes ok to mix different configs, so this is only
6844 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
6847 case Tag_ABI_PCS_R9_use
:
6848 if (in_attr
[i
].i
!= out_attr
[i
].i
6849 && out_attr
[i
].i
!= AEABI_R9_unused
6850 && in_attr
[i
].i
!= AEABI_R9_unused
)
6853 (_("ERROR: %B: Conflicting use of R9"), ibfd
);
6856 if (out_attr
[i
].i
== AEABI_R9_unused
)
6857 out_attr
[i
].i
= in_attr
[i
].i
;
6859 case Tag_ABI_PCS_RW_data
:
6860 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
6861 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
6862 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
6865 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
6869 /* Use the smallest value specified. */
6870 if (in_attr
[i
].i
< out_attr
[i
].i
)
6871 out_attr
[i
].i
= in_attr
[i
].i
;
6873 case Tag_ABI_PCS_RO_data
:
6874 /* Use the smallest value specified. */
6875 if (in_attr
[i
].i
< out_attr
[i
].i
)
6876 out_attr
[i
].i
= in_attr
[i
].i
;
6878 case Tag_ABI_PCS_GOT_use
:
6879 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
6880 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
6881 out_attr
[i
].i
= in_attr
[i
].i
;
6883 case Tag_ABI_PCS_wchar_t
:
6884 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
)
6887 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd
);
6891 out_attr
[i
].i
= in_attr
[i
].i
;
6893 case Tag_ABI_align8_needed
:
6894 /* ??? Check against Tag_ABI_align8_preserved. */
6895 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
6896 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
6897 out_attr
[i
].i
= in_attr
[i
].i
;
6899 case Tag_ABI_enum_size
:
6900 if (in_attr
[i
].i
!= AEABI_enum_unused
)
6902 if (out_attr
[i
].i
== AEABI_enum_unused
6903 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
6905 /* The existing object is compatible with anything.
6906 Use whatever requirements the new object has. */
6907 out_attr
[i
].i
= in_attr
[i
].i
;
6909 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
6910 && out_attr
[i
].i
!= in_attr
[i
].i
6911 && !elf32_arm_tdata (obfd
)->no_enum_size_warning
)
6913 const char *aeabi_enum_names
[] =
6914 { "", "variable-size", "32-bit", "" };
6916 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
6917 ibfd
, aeabi_enum_names
[in_attr
[i
].i
],
6918 aeabi_enum_names
[out_attr
[i
].i
]);
6922 case Tag_ABI_VFP_args
:
6925 case Tag_ABI_WMMX_args
:
6926 if (in_attr
[i
].i
!= out_attr
[i
].i
)
6929 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
6934 default: /* All known attributes should be explicitly covered. */
6938 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
6939 switch (in_attr
[i
].type
)
6943 out_attr
[i
].type
= 1;
6948 out_attr
[i
].type
= 2;
6956 /* Merge Tag_compatibility attributes and any common GNU ones. */
6957 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
6959 /* Check for any attributes not known on ARM. */
6960 in_list
= elf_other_obj_attributes_proc (ibfd
);
6961 while (in_list
&& in_list
->tag
== Tag_compatibility
)
6962 in_list
= in_list
->next
;
6964 for (; in_list
; in_list
= in_list
->next
)
6966 if ((in_list
->tag
& 128) < 64)
6969 (_("Warning: %B: Unknown EABI object attribute %d"),
6970 ibfd
, in_list
->tag
);
6978 /* Return TRUE if the two EABI versions are incompatible. */
6981 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
6983 /* v4 and v5 are the same spec before and after it was released,
6984 so allow mixing them. */
6985 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
6986 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
6989 return (iver
== over
);
6992 /* Merge backend specific data from an object file to the output
6993 object file when linking. */
6996 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
7000 bfd_boolean flags_compatible
= TRUE
;
7003 /* Check if we have the same endianess. */
7004 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
7007 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
7008 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
7011 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
7014 /* The input BFD must have had its flags initialised. */
7015 /* The following seems bogus to me -- The flags are initialized in
7016 the assembler but I don't think an elf_flags_init field is
7017 written into the object. */
7018 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7020 in_flags
= elf_elfheader (ibfd
)->e_flags
;
7021 out_flags
= elf_elfheader (obfd
)->e_flags
;
7023 if (!elf_flags_init (obfd
))
7025 /* If the input is the default architecture and had the default
7026 flags then do not bother setting the flags for the output
7027 architecture, instead allow future merges to do this. If no
7028 future merges ever set these flags then they will retain their
7029 uninitialised values, which surprise surprise, correspond
7030 to the default values. */
7031 if (bfd_get_arch_info (ibfd
)->the_default
7032 && elf_elfheader (ibfd
)->e_flags
== 0)
7035 elf_flags_init (obfd
) = TRUE
;
7036 elf_elfheader (obfd
)->e_flags
= in_flags
;
7038 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
7039 && bfd_get_arch_info (obfd
)->the_default
)
7040 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
7045 /* Determine what should happen if the input ARM architecture
7046 does not match the output ARM architecture. */
7047 if (! bfd_arm_merge_machines (ibfd
, obfd
))
7050 /* Identical flags must be compatible. */
7051 if (in_flags
== out_flags
)
7054 /* Check to see if the input BFD actually contains any sections. If
7055 not, its flags may not have been initialised either, but it
7056 cannot actually cause any incompatiblity. Do not short-circuit
7057 dynamic objects; their section list may be emptied by
7058 elf_link_add_object_symbols.
7060 Also check to see if there are no code sections in the input.
7061 In this case there is no need to check for code specific flags.
7062 XXX - do we need to worry about floating-point format compatability
7063 in data sections ? */
7064 if (!(ibfd
->flags
& DYNAMIC
))
7066 bfd_boolean null_input_bfd
= TRUE
;
7067 bfd_boolean only_data_sections
= TRUE
;
7069 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7071 /* Ignore synthetic glue sections. */
7072 if (strcmp (sec
->name
, ".glue_7")
7073 && strcmp (sec
->name
, ".glue_7t"))
7075 if ((bfd_get_section_flags (ibfd
, sec
)
7076 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7077 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7078 only_data_sections
= FALSE
;
7080 null_input_bfd
= FALSE
;
7085 if (null_input_bfd
|| only_data_sections
)
7089 /* Complain about various flag mismatches. */
7090 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
7091 EF_ARM_EABI_VERSION (out_flags
)))
7094 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
7096 (in_flags
& EF_ARM_EABIMASK
) >> 24,
7097 (out_flags
& EF_ARM_EABIMASK
) >> 24);
7101 /* Not sure what needs to be checked for EABI versions >= 1. */
7102 /* VxWorks libraries do not use these flags. */
7103 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
7104 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
7105 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
7107 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
7110 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
7112 in_flags
& EF_ARM_APCS_26
? 26 : 32,
7113 out_flags
& EF_ARM_APCS_26
? 26 : 32);
7114 flags_compatible
= FALSE
;
7117 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
7119 if (in_flags
& EF_ARM_APCS_FLOAT
)
7121 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
7125 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
7128 flags_compatible
= FALSE
;
7131 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
7133 if (in_flags
& EF_ARM_VFP_FLOAT
)
7135 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
7139 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
7142 flags_compatible
= FALSE
;
7145 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
7147 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
7149 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
7153 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
7156 flags_compatible
= FALSE
;
7159 #ifdef EF_ARM_SOFT_FLOAT
7160 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
7162 /* We can allow interworking between code that is VFP format
7163 layout, and uses either soft float or integer regs for
7164 passing floating point arguments and results. We already
7165 know that the APCS_FLOAT flags match; similarly for VFP
7167 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
7168 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
7170 if (in_flags
& EF_ARM_SOFT_FLOAT
)
7172 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
7176 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
7179 flags_compatible
= FALSE
;
7184 /* Interworking mismatch is only a warning. */
7185 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
7187 if (in_flags
& EF_ARM_INTERWORK
)
7190 (_("Warning: %B supports interworking, whereas %B does not"),
7196 (_("Warning: %B does not support interworking, whereas %B does"),
7202 return flags_compatible
;
7205 /* Display the flags field. */
7208 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
7210 FILE * file
= (FILE *) ptr
;
7211 unsigned long flags
;
7213 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
7215 /* Print normal ELF private data. */
7216 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
7218 flags
= elf_elfheader (abfd
)->e_flags
;
7219 /* Ignore init flag - it may not be set, despite the flags field
7220 containing valid data. */
7222 /* xgettext:c-format */
7223 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
7225 switch (EF_ARM_EABI_VERSION (flags
))
7227 case EF_ARM_EABI_UNKNOWN
:
7228 /* The following flag bits are GNU extensions and not part of the
7229 official ARM ELF extended ABI. Hence they are only decoded if
7230 the EABI version is not set. */
7231 if (flags
& EF_ARM_INTERWORK
)
7232 fprintf (file
, _(" [interworking enabled]"));
7234 if (flags
& EF_ARM_APCS_26
)
7235 fprintf (file
, " [APCS-26]");
7237 fprintf (file
, " [APCS-32]");
7239 if (flags
& EF_ARM_VFP_FLOAT
)
7240 fprintf (file
, _(" [VFP float format]"));
7241 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
7242 fprintf (file
, _(" [Maverick float format]"));
7244 fprintf (file
, _(" [FPA float format]"));
7246 if (flags
& EF_ARM_APCS_FLOAT
)
7247 fprintf (file
, _(" [floats passed in float registers]"));
7249 if (flags
& EF_ARM_PIC
)
7250 fprintf (file
, _(" [position independent]"));
7252 if (flags
& EF_ARM_NEW_ABI
)
7253 fprintf (file
, _(" [new ABI]"));
7255 if (flags
& EF_ARM_OLD_ABI
)
7256 fprintf (file
, _(" [old ABI]"));
7258 if (flags
& EF_ARM_SOFT_FLOAT
)
7259 fprintf (file
, _(" [software FP]"));
7261 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
7262 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
7263 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
7264 | EF_ARM_MAVERICK_FLOAT
);
7267 case EF_ARM_EABI_VER1
:
7268 fprintf (file
, _(" [Version1 EABI]"));
7270 if (flags
& EF_ARM_SYMSARESORTED
)
7271 fprintf (file
, _(" [sorted symbol table]"));
7273 fprintf (file
, _(" [unsorted symbol table]"));
7275 flags
&= ~ EF_ARM_SYMSARESORTED
;
7278 case EF_ARM_EABI_VER2
:
7279 fprintf (file
, _(" [Version2 EABI]"));
7281 if (flags
& EF_ARM_SYMSARESORTED
)
7282 fprintf (file
, _(" [sorted symbol table]"));
7284 fprintf (file
, _(" [unsorted symbol table]"));
7286 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
7287 fprintf (file
, _(" [dynamic symbols use segment index]"));
7289 if (flags
& EF_ARM_MAPSYMSFIRST
)
7290 fprintf (file
, _(" [mapping symbols precede others]"));
7292 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
7293 | EF_ARM_MAPSYMSFIRST
);
7296 case EF_ARM_EABI_VER3
:
7297 fprintf (file
, _(" [Version3 EABI]"));
7300 case EF_ARM_EABI_VER4
:
7301 fprintf (file
, _(" [Version4 EABI]"));
7304 case EF_ARM_EABI_VER5
:
7305 fprintf (file
, _(" [Version5 EABI]"));
7307 if (flags
& EF_ARM_BE8
)
7308 fprintf (file
, _(" [BE8]"));
7310 if (flags
& EF_ARM_LE8
)
7311 fprintf (file
, _(" [LE8]"));
7313 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
7317 fprintf (file
, _(" <EABI version unrecognised>"));
7321 flags
&= ~ EF_ARM_EABIMASK
;
7323 if (flags
& EF_ARM_RELEXEC
)
7324 fprintf (file
, _(" [relocatable executable]"));
7326 if (flags
& EF_ARM_HASENTRY
)
7327 fprintf (file
, _(" [has entry point]"));
7329 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
7332 fprintf (file
, _("<Unrecognised flag bits set>"));
7340 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
7342 switch (ELF_ST_TYPE (elf_sym
->st_info
))
7345 return ELF_ST_TYPE (elf_sym
->st_info
);
7348 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
7349 This allows us to distinguish between data used by Thumb instructions
7350 and non-data (which is probably code) inside Thumb regions of an
7352 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
7353 return ELF_ST_TYPE (elf_sym
->st_info
);
7364 elf32_arm_gc_mark_hook (asection
*sec
,
7365 struct bfd_link_info
*info
,
7366 Elf_Internal_Rela
*rel
,
7367 struct elf_link_hash_entry
*h
,
7368 Elf_Internal_Sym
*sym
)
7371 switch (ELF32_R_TYPE (rel
->r_info
))
7373 case R_ARM_GNU_VTINHERIT
:
7374 case R_ARM_GNU_VTENTRY
:
7378 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
7381 /* Update the got entry reference counts for the section being removed. */
7384 elf32_arm_gc_sweep_hook (bfd
* abfd
,
7385 struct bfd_link_info
* info
,
7387 const Elf_Internal_Rela
* relocs
)
7389 Elf_Internal_Shdr
*symtab_hdr
;
7390 struct elf_link_hash_entry
**sym_hashes
;
7391 bfd_signed_vma
*local_got_refcounts
;
7392 const Elf_Internal_Rela
*rel
, *relend
;
7393 struct elf32_arm_link_hash_table
* globals
;
7395 globals
= elf32_arm_hash_table (info
);
7397 elf_section_data (sec
)->local_dynrel
= NULL
;
7399 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
7400 sym_hashes
= elf_sym_hashes (abfd
);
7401 local_got_refcounts
= elf_local_got_refcounts (abfd
);
7403 relend
= relocs
+ sec
->reloc_count
;
7404 for (rel
= relocs
; rel
< relend
; rel
++)
7406 unsigned long r_symndx
;
7407 struct elf_link_hash_entry
*h
= NULL
;
7410 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7411 if (r_symndx
>= symtab_hdr
->sh_info
)
7413 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7414 while (h
->root
.type
== bfd_link_hash_indirect
7415 || h
->root
.type
== bfd_link_hash_warning
)
7416 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7419 r_type
= ELF32_R_TYPE (rel
->r_info
);
7420 r_type
= arm_real_reloc_type (globals
, r_type
);
7424 case R_ARM_GOT_PREL
:
7425 case R_ARM_TLS_GD32
:
7426 case R_ARM_TLS_IE32
:
7429 if (h
->got
.refcount
> 0)
7430 h
->got
.refcount
-= 1;
7432 else if (local_got_refcounts
!= NULL
)
7434 if (local_got_refcounts
[r_symndx
] > 0)
7435 local_got_refcounts
[r_symndx
] -= 1;
7439 case R_ARM_TLS_LDM32
:
7440 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
7444 case R_ARM_ABS32_NOI
:
7446 case R_ARM_REL32_NOI
:
7452 case R_ARM_THM_CALL
:
7453 case R_ARM_MOVW_ABS_NC
:
7454 case R_ARM_MOVT_ABS
:
7455 case R_ARM_MOVW_PREL_NC
:
7456 case R_ARM_MOVT_PREL
:
7457 case R_ARM_THM_MOVW_ABS_NC
:
7458 case R_ARM_THM_MOVT_ABS
:
7459 case R_ARM_THM_MOVW_PREL_NC
:
7460 case R_ARM_THM_MOVT_PREL
:
7461 /* Should the interworking branches be here also? */
7465 struct elf32_arm_link_hash_entry
*eh
;
7466 struct elf32_arm_relocs_copied
**pp
;
7467 struct elf32_arm_relocs_copied
*p
;
7469 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7471 if (h
->plt
.refcount
> 0)
7473 h
->plt
.refcount
-= 1;
7474 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_THM_CALL
)
7475 eh
->plt_thumb_refcount
--;
7478 if (r_type
== R_ARM_ABS32
7479 || r_type
== R_ARM_REL32
7480 || r_type
== R_ARM_ABS32_NOI
7481 || r_type
== R_ARM_REL32_NOI
)
7483 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
7485 if (p
->section
== sec
)
7488 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
7489 || ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32_NOI
)
7507 /* Look through the relocs for a section during the first phase. */
7510 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
7511 asection
*sec
, const Elf_Internal_Rela
*relocs
)
7513 Elf_Internal_Shdr
*symtab_hdr
;
7514 struct elf_link_hash_entry
**sym_hashes
;
7515 struct elf_link_hash_entry
**sym_hashes_end
;
7516 const Elf_Internal_Rela
*rel
;
7517 const Elf_Internal_Rela
*rel_end
;
7520 bfd_vma
*local_got_offsets
;
7521 struct elf32_arm_link_hash_table
*htab
;
7523 if (info
->relocatable
)
7526 htab
= elf32_arm_hash_table (info
);
7529 /* Create dynamic sections for relocatable executables so that we can
7530 copy relocations. */
7531 if (htab
->root
.is_relocatable_executable
7532 && ! htab
->root
.dynamic_sections_created
)
7534 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
7538 dynobj
= elf_hash_table (info
)->dynobj
;
7539 local_got_offsets
= elf_local_got_offsets (abfd
);
7541 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
7542 sym_hashes
= elf_sym_hashes (abfd
);
7543 sym_hashes_end
= sym_hashes
7544 + symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
);
7546 if (!elf_bad_symtab (abfd
))
7547 sym_hashes_end
-= symtab_hdr
->sh_info
;
7549 rel_end
= relocs
+ sec
->reloc_count
;
7550 for (rel
= relocs
; rel
< rel_end
; rel
++)
7552 struct elf_link_hash_entry
*h
;
7553 struct elf32_arm_link_hash_entry
*eh
;
7554 unsigned long r_symndx
;
7557 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7558 r_type
= ELF32_R_TYPE (rel
->r_info
);
7559 r_type
= arm_real_reloc_type (htab
, r_type
);
7561 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7563 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
7568 if (r_symndx
< symtab_hdr
->sh_info
)
7572 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7573 while (h
->root
.type
== bfd_link_hash_indirect
7574 || h
->root
.type
== bfd_link_hash_warning
)
7575 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7578 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7583 case R_ARM_GOT_PREL
:
7584 case R_ARM_TLS_GD32
:
7585 case R_ARM_TLS_IE32
:
7586 /* This symbol requires a global offset table entry. */
7588 int tls_type
, old_tls_type
;
7592 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
7593 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
7594 default: tls_type
= GOT_NORMAL
; break;
7600 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
7604 bfd_signed_vma
*local_got_refcounts
;
7606 /* This is a global offset table entry for a local symbol. */
7607 local_got_refcounts
= elf_local_got_refcounts (abfd
);
7608 if (local_got_refcounts
== NULL
)
7612 size
= symtab_hdr
->sh_info
;
7613 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
7614 local_got_refcounts
= bfd_zalloc (abfd
, size
);
7615 if (local_got_refcounts
== NULL
)
7617 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
7618 elf32_arm_local_got_tls_type (abfd
)
7619 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
7621 local_got_refcounts
[r_symndx
] += 1;
7622 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
7625 /* We will already have issued an error message if there is a
7626 TLS / non-TLS mismatch, based on the symbol type. We don't
7627 support any linker relaxations. So just combine any TLS
7629 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
7630 && tls_type
!= GOT_NORMAL
)
7631 tls_type
|= old_tls_type
;
7633 if (old_tls_type
!= tls_type
)
7636 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
7638 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
7643 case R_ARM_TLS_LDM32
:
7644 if (r_type
== R_ARM_TLS_LDM32
)
7645 htab
->tls_ldm_got
.refcount
++;
7648 case R_ARM_GOTOFF32
:
7650 if (htab
->sgot
== NULL
)
7652 if (htab
->root
.dynobj
== NULL
)
7653 htab
->root
.dynobj
= abfd
;
7654 if (!create_got_section (htab
->root
.dynobj
, info
))
7660 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
7661 ldr __GOTT_INDEX__ offsets. */
7662 if (!htab
->vxworks_p
)
7667 case R_ARM_ABS32_NOI
:
7669 case R_ARM_REL32_NOI
:
7675 case R_ARM_THM_CALL
:
7676 case R_ARM_MOVW_ABS_NC
:
7677 case R_ARM_MOVT_ABS
:
7678 case R_ARM_MOVW_PREL_NC
:
7679 case R_ARM_MOVT_PREL
:
7680 case R_ARM_THM_MOVW_ABS_NC
:
7681 case R_ARM_THM_MOVT_ABS
:
7682 case R_ARM_THM_MOVW_PREL_NC
:
7683 case R_ARM_THM_MOVT_PREL
:
7684 /* Should the interworking branches be listed here? */
7687 /* If this reloc is in a read-only section, we might
7688 need a copy reloc. We can't check reliably at this
7689 stage whether the section is read-only, as input
7690 sections have not yet been mapped to output sections.
7691 Tentatively set the flag for now, and correct in
7692 adjust_dynamic_symbol. */
7696 /* We may need a .plt entry if the function this reloc
7697 refers to is in a different object. We can't tell for
7698 sure yet, because something later might force the
7700 if (r_type
!= R_ARM_ABS32
7701 && r_type
!= R_ARM_REL32
7702 && r_type
!= R_ARM_ABS32_NOI
7703 && r_type
!= R_ARM_REL32_NOI
7704 && r_type
!= R_ARM_ABS12
)
7707 /* If we create a PLT entry, this relocation will reference
7708 it, even if it's an ABS32 relocation. */
7709 h
->plt
.refcount
+= 1;
7711 if (r_type
== R_ARM_THM_CALL
)
7712 eh
->plt_thumb_refcount
+= 1;
7715 /* If we are creating a shared library or relocatable executable,
7716 and this is a reloc against a global symbol, or a non PC
7717 relative reloc against a local symbol, then we need to copy
7718 the reloc into the shared library. However, if we are linking
7719 with -Bsymbolic, we do not need to copy a reloc against a
7720 global symbol which is defined in an object we are
7721 including in the link (i.e., DEF_REGULAR is set). At
7722 this point we have not seen all the input files, so it is
7723 possible that DEF_REGULAR is not set now but will be set
7724 later (it is never cleared). We account for that
7725 possibility below by storing information in the
7726 relocs_copied field of the hash table entry. */
7727 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
7728 && (sec
->flags
& SEC_ALLOC
) != 0
7729 && ((r_type
== R_ARM_ABS32
|| r_type
== R_ARM_ABS32_NOI
)
7730 || (h
!= NULL
&& ! h
->needs_plt
7731 && (! info
->symbolic
|| ! h
->def_regular
))))
7733 struct elf32_arm_relocs_copied
*p
, **head
;
7735 /* When creating a shared object, we must copy these
7736 reloc types into the output file. We create a reloc
7737 section in dynobj and make room for this reloc. */
7742 name
= (bfd_elf_string_from_elf_section
7744 elf_elfheader (abfd
)->e_shstrndx
,
7745 elf_section_data (sec
)->rel_hdr
.sh_name
));
7749 BFD_ASSERT (reloc_section_p (htab
, name
, sec
));
7751 sreloc
= bfd_get_section_by_name (dynobj
, name
);
7756 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
7757 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
7758 if ((sec
->flags
& SEC_ALLOC
) != 0
7759 /* BPABI objects never have dynamic
7760 relocations mapped. */
7761 && !htab
->symbian_p
)
7762 flags
|= SEC_ALLOC
| SEC_LOAD
;
7763 sreloc
= bfd_make_section_with_flags (dynobj
,
7767 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
7771 elf_section_data (sec
)->sreloc
= sreloc
;
7774 /* If this is a global symbol, we count the number of
7775 relocations we need for this symbol. */
7778 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
7782 /* Track dynamic relocs needed for local syms too.
7783 We really need local syms available to do this
7789 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
7794 vpp
= &elf_section_data (s
)->local_dynrel
;
7795 head
= (struct elf32_arm_relocs_copied
**) vpp
;
7799 if (p
== NULL
|| p
->section
!= sec
)
7801 bfd_size_type amt
= sizeof *p
;
7803 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
7813 if (r_type
== R_ARM_REL32
|| r_type
== R_ARM_REL32_NOI
)
7819 /* This relocation describes the C++ object vtable hierarchy.
7820 Reconstruct it for later use during GC. */
7821 case R_ARM_GNU_VTINHERIT
:
7822 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
7826 /* This relocation describes which C++ vtable entries are actually
7827 used. Record for later use during GC. */
7828 case R_ARM_GNU_VTENTRY
:
7829 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
7838 /* Unwinding tables are not referenced directly. This pass marks them as
7839 required if the corresponding code section is marked. */
7842 elf32_arm_gc_mark_extra_sections(struct bfd_link_info
*info
,
7843 elf_gc_mark_hook_fn gc_mark_hook
)
7846 Elf_Internal_Shdr
**elf_shdrp
;
7849 /* Marking EH data may cause additional code sections to be marked,
7850 requiring multiple passes. */
7855 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
7859 if (bfd_get_flavour (sub
) != bfd_target_elf_flavour
)
7862 elf_shdrp
= elf_elfsections (sub
);
7863 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
7865 Elf_Internal_Shdr
*hdr
;
7866 hdr
= &elf_section_data (o
)->this_hdr
;
7867 if (hdr
->sh_type
== SHT_ARM_EXIDX
&& hdr
->sh_link
7869 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
7872 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
7882 /* Treat mapping symbols as special target symbols. */
7885 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
7887 return bfd_is_arm_special_symbol_name (sym
->name
,
7888 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
7891 /* This is a copy of elf_find_function() from elf.c except that
7892 ARM mapping symbols are ignored when looking for function names
7893 and STT_ARM_TFUNC is considered to a function type. */
7896 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
7900 const char ** filename_ptr
,
7901 const char ** functionname_ptr
)
7903 const char * filename
= NULL
;
7904 asymbol
* func
= NULL
;
7905 bfd_vma low_func
= 0;
7908 for (p
= symbols
; *p
!= NULL
; p
++)
7912 q
= (elf_symbol_type
*) *p
;
7914 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
7919 filename
= bfd_asymbol_name (&q
->symbol
);
7924 /* Skip mapping symbols. */
7925 if ((q
->symbol
.flags
& BSF_LOCAL
)
7926 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
7927 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
7930 if (bfd_get_section (&q
->symbol
) == section
7931 && q
->symbol
.value
>= low_func
7932 && q
->symbol
.value
<= offset
)
7934 func
= (asymbol
*) q
;
7935 low_func
= q
->symbol
.value
;
7945 *filename_ptr
= filename
;
7946 if (functionname_ptr
)
7947 *functionname_ptr
= bfd_asymbol_name (func
);
7953 /* Find the nearest line to a particular section and offset, for error
7954 reporting. This code is a duplicate of the code in elf.c, except
7955 that it uses arm_elf_find_function. */
7958 elf32_arm_find_nearest_line (bfd
* abfd
,
7962 const char ** filename_ptr
,
7963 const char ** functionname_ptr
,
7964 unsigned int * line_ptr
)
7966 bfd_boolean found
= FALSE
;
7968 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
7970 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
7971 filename_ptr
, functionname_ptr
,
7973 & elf_tdata (abfd
)->dwarf2_find_line_info
))
7975 if (!*functionname_ptr
)
7976 arm_elf_find_function (abfd
, section
, symbols
, offset
,
7977 *filename_ptr
? NULL
: filename_ptr
,
7983 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
7984 & found
, filename_ptr
,
7985 functionname_ptr
, line_ptr
,
7986 & elf_tdata (abfd
)->line_info
))
7989 if (found
&& (*functionname_ptr
|| *line_ptr
))
7992 if (symbols
== NULL
)
7995 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
7996 filename_ptr
, functionname_ptr
))
8004 elf32_arm_find_inliner_info (bfd
* abfd
,
8005 const char ** filename_ptr
,
8006 const char ** functionname_ptr
,
8007 unsigned int * line_ptr
)
8010 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
8011 functionname_ptr
, line_ptr
,
8012 & elf_tdata (abfd
)->dwarf2_find_line_info
);
8016 /* Adjust a symbol defined by a dynamic object and referenced by a
8017 regular object. The current definition is in some section of the
8018 dynamic object, but we're not including those sections. We have to
8019 change the definition to something the rest of the link can
8023 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
8024 struct elf_link_hash_entry
* h
)
8028 struct elf32_arm_link_hash_entry
* eh
;
8029 struct elf32_arm_link_hash_table
*globals
;
8031 globals
= elf32_arm_hash_table (info
);
8032 dynobj
= elf_hash_table (info
)->dynobj
;
8034 /* Make sure we know what is going on here. */
8035 BFD_ASSERT (dynobj
!= NULL
8037 || h
->u
.weakdef
!= NULL
8040 && !h
->def_regular
)));
8042 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8044 /* If this is a function, put it in the procedure linkage table. We
8045 will fill in the contents of the procedure linkage table later,
8046 when we know the address of the .got section. */
8047 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
8050 if (h
->plt
.refcount
<= 0
8051 || SYMBOL_CALLS_LOCAL (info
, h
)
8052 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
8053 && h
->root
.type
== bfd_link_hash_undefweak
))
8055 /* This case can occur if we saw a PLT32 reloc in an input
8056 file, but the symbol was never referred to by a dynamic
8057 object, or if all references were garbage collected. In
8058 such a case, we don't actually need to build a procedure
8059 linkage table, and we can just do a PC24 reloc instead. */
8060 h
->plt
.offset
= (bfd_vma
) -1;
8061 eh
->plt_thumb_refcount
= 0;
8069 /* It's possible that we incorrectly decided a .plt reloc was
8070 needed for an R_ARM_PC24 or similar reloc to a non-function sym
8071 in check_relocs. We can't decide accurately between function
8072 and non-function syms in check-relocs; Objects loaded later in
8073 the link may change h->type. So fix it now. */
8074 h
->plt
.offset
= (bfd_vma
) -1;
8075 eh
->plt_thumb_refcount
= 0;
8078 /* If this is a weak symbol, and there is a real definition, the
8079 processor independent code will have arranged for us to see the
8080 real definition first, and we can just use the same value. */
8081 if (h
->u
.weakdef
!= NULL
)
8083 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
8084 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
8085 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
8086 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
8090 /* If there are no non-GOT references, we do not need a copy
8092 if (!h
->non_got_ref
)
8095 /* This is a reference to a symbol defined by a dynamic object which
8096 is not a function. */
8098 /* If we are creating a shared library, we must presume that the
8099 only references to the symbol are via the global offset table.
8100 For such cases we need not do anything here; the relocations will
8101 be handled correctly by relocate_section. Relocatable executables
8102 can reference data in shared objects directly, so we don't need to
8103 do anything here. */
8104 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
8109 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
8110 h
->root
.root
.string
);
8114 /* We must allocate the symbol in our .dynbss section, which will
8115 become part of the .bss section of the executable. There will be
8116 an entry for this symbol in the .dynsym section. The dynamic
8117 object will contain position independent code, so all references
8118 from the dynamic object to this symbol will go through the global
8119 offset table. The dynamic linker will use the .dynsym entry to
8120 determine the address it must put in the global offset table, so
8121 both the dynamic object and the regular object will refer to the
8122 same memory location for the variable. */
8123 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
8124 BFD_ASSERT (s
!= NULL
);
8126 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
8127 copy the initial value out of the dynamic object and into the
8128 runtime process image. We need to remember the offset into the
8129 .rel(a).bss section we are going to use. */
8130 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
8134 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
8135 BFD_ASSERT (srel
!= NULL
);
8136 srel
->size
+= RELOC_SIZE (globals
);
8140 return _bfd_elf_adjust_dynamic_copy (h
, s
);
8143 /* Allocate space in .plt, .got and associated reloc sections for
8147 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
8149 struct bfd_link_info
*info
;
8150 struct elf32_arm_link_hash_table
*htab
;
8151 struct elf32_arm_link_hash_entry
*eh
;
8152 struct elf32_arm_relocs_copied
*p
;
8154 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8156 if (h
->root
.type
== bfd_link_hash_indirect
)
8159 if (h
->root
.type
== bfd_link_hash_warning
)
8160 /* When warning symbols are created, they **replace** the "real"
8161 entry in the hash table, thus we never get to see the real
8162 symbol in a hash traversal. So look at it now. */
8163 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8165 info
= (struct bfd_link_info
*) inf
;
8166 htab
= elf32_arm_hash_table (info
);
8168 if (htab
->root
.dynamic_sections_created
8169 && h
->plt
.refcount
> 0)
8171 /* Make sure this symbol is output as a dynamic symbol.
8172 Undefined weak syms won't yet be marked as dynamic. */
8173 if (h
->dynindx
== -1
8174 && !h
->forced_local
)
8176 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8181 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
8183 asection
*s
= htab
->splt
;
8185 /* If this is the first .plt entry, make room for the special
8188 s
->size
+= htab
->plt_header_size
;
8190 h
->plt
.offset
= s
->size
;
8192 /* If we will insert a Thumb trampoline before this PLT, leave room
8194 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
8196 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
8197 s
->size
+= PLT_THUMB_STUB_SIZE
;
8200 /* If this symbol is not defined in a regular file, and we are
8201 not generating a shared library, then set the symbol to this
8202 location in the .plt. This is required to make function
8203 pointers compare as equal between the normal executable and
8204 the shared library. */
8208 h
->root
.u
.def
.section
= s
;
8209 h
->root
.u
.def
.value
= h
->plt
.offset
;
8211 /* Make sure the function is not marked as Thumb, in case
8212 it is the target of an ABS32 relocation, which will
8213 point to the PLT entry. */
8214 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
8215 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
8218 /* Make room for this entry. */
8219 s
->size
+= htab
->plt_entry_size
;
8221 if (!htab
->symbian_p
)
8223 /* We also need to make an entry in the .got.plt section, which
8224 will be placed in the .got section by the linker script. */
8225 eh
->plt_got_offset
= htab
->sgotplt
->size
;
8226 htab
->sgotplt
->size
+= 4;
8229 /* We also need to make an entry in the .rel(a).plt section. */
8230 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
8232 /* VxWorks executables have a second set of relocations for
8233 each PLT entry. They go in a separate relocation section,
8234 which is processed by the kernel loader. */
8235 if (htab
->vxworks_p
&& !info
->shared
)
8237 /* There is a relocation for the initial PLT entry:
8238 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
8239 if (h
->plt
.offset
== htab
->plt_header_size
)
8240 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
8242 /* There are two extra relocations for each subsequent
8243 PLT entry: an R_ARM_32 relocation for the GOT entry,
8244 and an R_ARM_32 relocation for the PLT entry. */
8245 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
8250 h
->plt
.offset
= (bfd_vma
) -1;
8256 h
->plt
.offset
= (bfd_vma
) -1;
8260 if (h
->got
.refcount
> 0)
8264 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
8267 /* Make sure this symbol is output as a dynamic symbol.
8268 Undefined weak syms won't yet be marked as dynamic. */
8269 if (h
->dynindx
== -1
8270 && !h
->forced_local
)
8272 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8276 if (!htab
->symbian_p
)
8279 h
->got
.offset
= s
->size
;
8281 if (tls_type
== GOT_UNKNOWN
)
8284 if (tls_type
== GOT_NORMAL
)
8285 /* Non-TLS symbols need one GOT slot. */
8289 if (tls_type
& GOT_TLS_GD
)
8290 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
8292 if (tls_type
& GOT_TLS_IE
)
8293 /* R_ARM_TLS_IE32 needs one GOT slot. */
8297 dyn
= htab
->root
.dynamic_sections_created
;
8300 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
8302 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
8305 if (tls_type
!= GOT_NORMAL
8306 && (info
->shared
|| indx
!= 0)
8307 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8308 || h
->root
.type
!= bfd_link_hash_undefweak
))
8310 if (tls_type
& GOT_TLS_IE
)
8311 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8313 if (tls_type
& GOT_TLS_GD
)
8314 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8316 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
8317 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8319 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8320 || h
->root
.type
!= bfd_link_hash_undefweak
)
8322 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8323 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8327 h
->got
.offset
= (bfd_vma
) -1;
8329 /* Allocate stubs for exported Thumb functions on v4t. */
8330 if (!htab
->use_blx
&& h
->dynindx
!= -1
8332 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
8333 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
8335 struct elf_link_hash_entry
* th
;
8336 struct bfd_link_hash_entry
* bh
;
8337 struct elf_link_hash_entry
* myh
;
8341 /* Create a new symbol to regist the real location of the function. */
8342 s
= h
->root
.u
.def
.section
;
8343 sprintf(name
, "__real_%s", h
->root
.root
.string
);
8344 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
8345 name
, BSF_GLOBAL
, s
,
8346 h
->root
.u
.def
.value
,
8347 NULL
, TRUE
, FALSE
, &bh
);
8349 myh
= (struct elf_link_hash_entry
*) bh
;
8350 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
8351 myh
->forced_local
= 1;
8352 eh
->export_glue
= myh
;
8353 th
= record_arm_to_thumb_glue (info
, h
);
8354 /* Point the symbol at the stub. */
8355 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
8356 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
8357 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
8360 if (eh
->relocs_copied
== NULL
)
8363 /* In the shared -Bsymbolic case, discard space allocated for
8364 dynamic pc-relative relocs against symbols which turn out to be
8365 defined in regular objects. For the normal shared case, discard
8366 space for pc-relative relocs that have become local due to symbol
8367 visibility changes. */
8369 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
8371 /* The only relocs that use pc_count are R_ARM_REL32 and
8372 R_ARM_REL32_NOI, which will appear on something like
8373 ".long foo - .". We want calls to protected symbols to resolve
8374 directly to the function rather than going via the plt. If people
8375 want function pointer comparisons to work as expected then they
8376 should avoid writing assembly like ".long foo - .". */
8377 if (SYMBOL_CALLS_LOCAL (info
, h
))
8379 struct elf32_arm_relocs_copied
**pp
;
8381 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
8383 p
->count
-= p
->pc_count
;
8392 /* Also discard relocs on undefined weak syms with non-default
8394 if (eh
->relocs_copied
!= NULL
8395 && h
->root
.type
== bfd_link_hash_undefweak
)
8397 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8398 eh
->relocs_copied
= NULL
;
8400 /* Make sure undefined weak symbols are output as a dynamic
8402 else if (h
->dynindx
== -1
8403 && !h
->forced_local
)
8405 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8410 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
8411 && h
->root
.type
== bfd_link_hash_new
)
8413 /* Output absolute symbols so that we can create relocations
8414 against them. For normal symbols we output a relocation
8415 against the section that contains them. */
8416 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8423 /* For the non-shared case, discard space for relocs against
8424 symbols which turn out to need copy relocs or are not
8430 || (htab
->root
.dynamic_sections_created
8431 && (h
->root
.type
== bfd_link_hash_undefweak
8432 || h
->root
.type
== bfd_link_hash_undefined
))))
8434 /* Make sure this symbol is output as a dynamic symbol.
8435 Undefined weak syms won't yet be marked as dynamic. */
8436 if (h
->dynindx
== -1
8437 && !h
->forced_local
)
8439 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8443 /* If that succeeded, we know we'll be keeping all the
8445 if (h
->dynindx
!= -1)
8449 eh
->relocs_copied
= NULL
;
8454 /* Finally, allocate space. */
8455 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
8457 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
8458 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
8464 /* Find any dynamic relocs that apply to read-only sections. */
8467 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
*h
, PTR inf
)
8469 struct elf32_arm_link_hash_entry
*eh
;
8470 struct elf32_arm_relocs_copied
*p
;
8472 if (h
->root
.type
== bfd_link_hash_warning
)
8473 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8475 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8476 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
8478 asection
*s
= p
->section
;
8480 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8482 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
8484 info
->flags
|= DF_TEXTREL
;
8486 /* Not an error, just cut short the traversal. */
8494 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info
*info
,
8497 struct elf32_arm_link_hash_table
*globals
;
8499 globals
= elf32_arm_hash_table (info
);
8500 globals
->byteswap_code
= byteswap_code
;
8503 /* Set the sizes of the dynamic sections. */
8506 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
8507 struct bfd_link_info
* info
)
8514 struct elf32_arm_link_hash_table
*htab
;
8516 htab
= elf32_arm_hash_table (info
);
8517 dynobj
= elf_hash_table (info
)->dynobj
;
8518 BFD_ASSERT (dynobj
!= NULL
);
8519 check_use_blx (htab
);
8521 if (elf_hash_table (info
)->dynamic_sections_created
)
8523 /* Set the contents of the .interp section to the interpreter. */
8524 if (info
->executable
)
8526 s
= bfd_get_section_by_name (dynobj
, ".interp");
8527 BFD_ASSERT (s
!= NULL
);
8528 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8529 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8533 /* Set up .got offsets for local syms, and space for local dynamic
8535 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8537 bfd_signed_vma
*local_got
;
8538 bfd_signed_vma
*end_local_got
;
8539 char *local_tls_type
;
8540 bfd_size_type locsymcount
;
8541 Elf_Internal_Shdr
*symtab_hdr
;
8544 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
8547 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8549 struct elf32_arm_relocs_copied
*p
;
8551 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8553 if (!bfd_is_abs_section (p
->section
)
8554 && bfd_is_abs_section (p
->section
->output_section
))
8556 /* Input section has been discarded, either because
8557 it is a copy of a linkonce section or due to
8558 linker script /DISCARD/, so we'll be discarding
8561 else if (p
->count
!= 0)
8563 srel
= elf_section_data (p
->section
)->sreloc
;
8564 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
8565 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
8566 info
->flags
|= DF_TEXTREL
;
8571 local_got
= elf_local_got_refcounts (ibfd
);
8575 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
8576 locsymcount
= symtab_hdr
->sh_info
;
8577 end_local_got
= local_got
+ locsymcount
;
8578 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
8580 srel
= htab
->srelgot
;
8581 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
8585 *local_got
= s
->size
;
8586 if (*local_tls_type
& GOT_TLS_GD
)
8587 /* TLS_GD relocs need an 8-byte structure in the GOT. */
8589 if (*local_tls_type
& GOT_TLS_IE
)
8591 if (*local_tls_type
== GOT_NORMAL
)
8594 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
8595 srel
->size
+= RELOC_SIZE (htab
);
8598 *local_got
= (bfd_vma
) -1;
8602 if (htab
->tls_ldm_got
.refcount
> 0)
8604 /* Allocate two GOT entries and one dynamic relocation (if necessary)
8605 for R_ARM_TLS_LDM32 relocations. */
8606 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
8607 htab
->sgot
->size
+= 8;
8609 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8612 htab
->tls_ldm_got
.offset
= -1;
8614 /* Allocate global sym .plt and .got entries, and space for global
8615 sym dynamic relocs. */
8616 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
8618 /* Here we rummage through the found bfds to collect glue information. */
8619 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8621 /* Initialise mapping tables for code/data. */
8622 bfd_elf32_arm_init_maps (ibfd
);
8624 if (!bfd_elf32_arm_process_before_allocation (ibfd
, info
)
8625 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd
, info
))
8626 /* xgettext:c-format */
8627 _bfd_error_handler (_("Errors encountered processing file %s"),
8631 /* The check_relocs and adjust_dynamic_symbol entry points have
8632 determined the sizes of the various dynamic sections. Allocate
8636 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8640 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8643 /* It's OK to base decisions on the section name, because none
8644 of the dynobj section names depend upon the input files. */
8645 name
= bfd_get_section_name (dynobj
, s
);
8647 if (strcmp (name
, ".plt") == 0)
8649 /* Remember whether there is a PLT. */
8652 else if (CONST_STRNEQ (name
, ".rel"))
8656 /* Remember whether there are any reloc sections other
8657 than .rel(a).plt and .rela.plt.unloaded. */
8658 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
8661 /* We use the reloc_count field as a counter if we need
8662 to copy relocs into the output file. */
8666 else if (! CONST_STRNEQ (name
, ".got")
8667 && strcmp (name
, ".dynbss") != 0)
8669 /* It's not one of our sections, so don't allocate space. */
8675 /* If we don't need this section, strip it from the
8676 output file. This is mostly to handle .rel(a).bss and
8677 .rel(a).plt. We must create both sections in
8678 create_dynamic_sections, because they must be created
8679 before the linker maps input sections to output
8680 sections. The linker does that before
8681 adjust_dynamic_symbol is called, and it is that
8682 function which decides whether anything needs to go
8683 into these sections. */
8684 s
->flags
|= SEC_EXCLUDE
;
8688 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8691 /* Allocate memory for the section contents. */
8692 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
8693 if (s
->contents
== NULL
)
8697 if (elf_hash_table (info
)->dynamic_sections_created
)
8699 /* Add some entries to the .dynamic section. We fill in the
8700 values later, in elf32_arm_finish_dynamic_sections, but we
8701 must add the entries now so that we get the correct size for
8702 the .dynamic section. The DT_DEBUG entry is filled in by the
8703 dynamic linker and used by the debugger. */
8704 #define add_dynamic_entry(TAG, VAL) \
8705 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8707 if (info
->executable
)
8709 if (!add_dynamic_entry (DT_DEBUG
, 0))
8715 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
8716 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8717 || !add_dynamic_entry (DT_PLTREL
,
8718 htab
->use_rel
? DT_REL
: DT_RELA
)
8719 || !add_dynamic_entry (DT_JMPREL
, 0))
8727 if (!add_dynamic_entry (DT_REL
, 0)
8728 || !add_dynamic_entry (DT_RELSZ
, 0)
8729 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
8734 if (!add_dynamic_entry (DT_RELA
, 0)
8735 || !add_dynamic_entry (DT_RELASZ
, 0)
8736 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
8741 /* If any dynamic relocs apply to a read-only section,
8742 then we need a DT_TEXTREL entry. */
8743 if ((info
->flags
& DF_TEXTREL
) == 0)
8744 elf_link_hash_traverse (&htab
->root
, elf32_arm_readonly_dynrelocs
,
8747 if ((info
->flags
& DF_TEXTREL
) != 0)
8749 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8753 #undef add_dynamic_entry
8758 /* Finish up dynamic symbol handling. We set the contents of various
8759 dynamic sections here. */
8762 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
, struct bfd_link_info
* info
,
8763 struct elf_link_hash_entry
* h
, Elf_Internal_Sym
* sym
)
8766 struct elf32_arm_link_hash_table
*htab
;
8767 struct elf32_arm_link_hash_entry
*eh
;
8769 dynobj
= elf_hash_table (info
)->dynobj
;
8770 htab
= elf32_arm_hash_table (info
);
8771 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8773 if (h
->plt
.offset
!= (bfd_vma
) -1)
8779 Elf_Internal_Rela rel
;
8781 /* This symbol has an entry in the procedure linkage table. Set
8784 BFD_ASSERT (h
->dynindx
!= -1);
8786 splt
= bfd_get_section_by_name (dynobj
, ".plt");
8787 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
8788 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
8790 /* Fill in the entry in the procedure linkage table. */
8791 if (htab
->symbian_p
)
8793 put_arm_insn (htab
, output_bfd
,
8794 elf32_arm_symbian_plt_entry
[0],
8795 splt
->contents
+ h
->plt
.offset
);
8796 bfd_put_32 (output_bfd
,
8797 elf32_arm_symbian_plt_entry
[1],
8798 splt
->contents
+ h
->plt
.offset
+ 4);
8800 /* Fill in the entry in the .rel.plt section. */
8801 rel
.r_offset
= (splt
->output_section
->vma
8802 + splt
->output_offset
8803 + h
->plt
.offset
+ 4);
8804 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
8806 /* Get the index in the procedure linkage table which
8807 corresponds to this symbol. This is the index of this symbol
8808 in all the symbols for which we are making plt entries. The
8809 first entry in the procedure linkage table is reserved. */
8810 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
8811 / htab
->plt_entry_size
);
8815 bfd_vma got_offset
, got_address
, plt_address
;
8816 bfd_vma got_displacement
;
8820 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
8821 BFD_ASSERT (sgot
!= NULL
);
8823 /* Get the offset into the .got.plt table of the entry that
8824 corresponds to this function. */
8825 got_offset
= eh
->plt_got_offset
;
8827 /* Get the index in the procedure linkage table which
8828 corresponds to this symbol. This is the index of this symbol
8829 in all the symbols for which we are making plt entries. The
8830 first three entries in .got.plt are reserved; after that
8831 symbols appear in the same order as in .plt. */
8832 plt_index
= (got_offset
- 12) / 4;
8834 /* Calculate the address of the GOT entry. */
8835 got_address
= (sgot
->output_section
->vma
8836 + sgot
->output_offset
8839 /* ...and the address of the PLT entry. */
8840 plt_address
= (splt
->output_section
->vma
8841 + splt
->output_offset
8844 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
8845 if (htab
->vxworks_p
&& info
->shared
)
8850 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
8852 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
8854 val
|= got_address
- sgot
->output_section
->vma
;
8856 val
|= plt_index
* RELOC_SIZE (htab
);
8857 if (i
== 2 || i
== 5)
8858 bfd_put_32 (output_bfd
, val
, ptr
);
8860 put_arm_insn (htab
, output_bfd
, val
, ptr
);
8863 else if (htab
->vxworks_p
)
8868 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
8870 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
8874 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
8876 val
|= plt_index
* RELOC_SIZE (htab
);
8877 if (i
== 2 || i
== 5)
8878 bfd_put_32 (output_bfd
, val
, ptr
);
8880 put_arm_insn (htab
, output_bfd
, val
, ptr
);
8883 loc
= (htab
->srelplt2
->contents
8884 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
8886 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
8887 referencing the GOT for this PLT entry. */
8888 rel
.r_offset
= plt_address
+ 8;
8889 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
8890 rel
.r_addend
= got_offset
;
8891 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8892 loc
+= RELOC_SIZE (htab
);
8894 /* Create the R_ARM_ABS32 relocation referencing the
8895 beginning of the PLT for this GOT entry. */
8896 rel
.r_offset
= got_address
;
8897 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
8899 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8903 /* Calculate the displacement between the PLT slot and the
8904 entry in the GOT. The eight-byte offset accounts for the
8905 value produced by adding to pc in the first instruction
8907 got_displacement
= got_address
- (plt_address
+ 8);
8909 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
8911 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
8913 put_thumb_insn (htab
, output_bfd
,
8914 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
8915 put_thumb_insn (htab
, output_bfd
,
8916 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
8919 put_arm_insn (htab
, output_bfd
,
8920 elf32_arm_plt_entry
[0]
8921 | ((got_displacement
& 0x0ff00000) >> 20),
8923 put_arm_insn (htab
, output_bfd
,
8924 elf32_arm_plt_entry
[1]
8925 | ((got_displacement
& 0x000ff000) >> 12),
8927 put_arm_insn (htab
, output_bfd
,
8928 elf32_arm_plt_entry
[2]
8929 | (got_displacement
& 0x00000fff),
8931 #ifdef FOUR_WORD_PLT
8932 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
8936 /* Fill in the entry in the global offset table. */
8937 bfd_put_32 (output_bfd
,
8938 (splt
->output_section
->vma
8939 + splt
->output_offset
),
8940 sgot
->contents
+ got_offset
);
8942 /* Fill in the entry in the .rel(a).plt section. */
8944 rel
.r_offset
= got_address
;
8945 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
8948 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
8949 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8951 if (!h
->def_regular
)
8953 /* Mark the symbol as undefined, rather than as defined in
8954 the .plt section. Leave the value alone. */
8955 sym
->st_shndx
= SHN_UNDEF
;
8956 /* If the symbol is weak, we do need to clear the value.
8957 Otherwise, the PLT entry would provide a definition for
8958 the symbol even if the symbol wasn't defined anywhere,
8959 and so the symbol would never be NULL. */
8960 if (!h
->ref_regular_nonweak
)
8965 if (h
->got
.offset
!= (bfd_vma
) -1
8966 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
8967 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
8971 Elf_Internal_Rela rel
;
8975 /* This symbol has an entry in the global offset table. Set it
8977 sgot
= bfd_get_section_by_name (dynobj
, ".got");
8978 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
8979 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
8981 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
8983 rel
.r_offset
= (sgot
->output_section
->vma
8984 + sgot
->output_offset
8987 /* If this is a static link, or it is a -Bsymbolic link and the
8988 symbol is defined locally or was forced to be local because
8989 of a version file, we just want to emit a RELATIVE reloc.
8990 The entry in the global offset table will already have been
8991 initialized in the relocate_section function. */
8993 && SYMBOL_REFERENCES_LOCAL (info
, h
))
8995 BFD_ASSERT((h
->got
.offset
& 1) != 0);
8996 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
8999 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
9000 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
9005 BFD_ASSERT((h
->got
.offset
& 1) == 0);
9006 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
9007 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
9010 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
9011 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9017 Elf_Internal_Rela rel
;
9020 /* This symbol needs a copy reloc. Set it up. */
9021 BFD_ASSERT (h
->dynindx
!= -1
9022 && (h
->root
.type
== bfd_link_hash_defined
9023 || h
->root
.type
== bfd_link_hash_defweak
));
9025 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
9026 RELOC_SECTION (htab
, ".bss"));
9027 BFD_ASSERT (s
!= NULL
);
9030 rel
.r_offset
= (h
->root
.u
.def
.value
9031 + h
->root
.u
.def
.section
->output_section
->vma
9032 + h
->root
.u
.def
.section
->output_offset
);
9033 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
9034 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
9035 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9038 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
9039 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
9040 to the ".got" section. */
9041 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
9042 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
9043 sym
->st_shndx
= SHN_ABS
;
9048 /* Finish up the dynamic sections. */
9051 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
9057 dynobj
= elf_hash_table (info
)->dynobj
;
9059 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
9060 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
9061 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
9063 if (elf_hash_table (info
)->dynamic_sections_created
)
9066 Elf32_External_Dyn
*dyncon
, *dynconend
;
9067 struct elf32_arm_link_hash_table
*htab
;
9069 htab
= elf32_arm_hash_table (info
);
9070 splt
= bfd_get_section_by_name (dynobj
, ".plt");
9071 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
9073 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
9074 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9076 for (; dyncon
< dynconend
; dyncon
++)
9078 Elf_Internal_Dyn dyn
;
9082 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9093 goto get_vma_if_bpabi
;
9096 goto get_vma_if_bpabi
;
9099 goto get_vma_if_bpabi
;
9101 name
= ".gnu.version";
9102 goto get_vma_if_bpabi
;
9104 name
= ".gnu.version_d";
9105 goto get_vma_if_bpabi
;
9107 name
= ".gnu.version_r";
9108 goto get_vma_if_bpabi
;
9114 name
= RELOC_SECTION (htab
, ".plt");
9116 s
= bfd_get_section_by_name (output_bfd
, name
);
9117 BFD_ASSERT (s
!= NULL
);
9118 if (!htab
->symbian_p
)
9119 dyn
.d_un
.d_ptr
= s
->vma
;
9121 /* In the BPABI, tags in the PT_DYNAMIC section point
9122 at the file offset, not the memory address, for the
9123 convenience of the post linker. */
9124 dyn
.d_un
.d_ptr
= s
->filepos
;
9125 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9129 if (htab
->symbian_p
)
9134 s
= bfd_get_section_by_name (output_bfd
,
9135 RELOC_SECTION (htab
, ".plt"));
9136 BFD_ASSERT (s
!= NULL
);
9137 dyn
.d_un
.d_val
= s
->size
;
9138 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9143 if (!htab
->symbian_p
)
9145 /* My reading of the SVR4 ABI indicates that the
9146 procedure linkage table relocs (DT_JMPREL) should be
9147 included in the overall relocs (DT_REL). This is
9148 what Solaris does. However, UnixWare can not handle
9149 that case. Therefore, we override the DT_RELSZ entry
9150 here to make it not include the JMPREL relocs. Since
9151 the linker script arranges for .rel(a).plt to follow all
9152 other relocation sections, we don't have to worry
9153 about changing the DT_REL entry. */
9154 s
= bfd_get_section_by_name (output_bfd
,
9155 RELOC_SECTION (htab
, ".plt"));
9157 dyn
.d_un
.d_val
-= s
->size
;
9158 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9165 /* In the BPABI, the DT_REL tag must point at the file
9166 offset, not the VMA, of the first relocation
9167 section. So, we use code similar to that in
9168 elflink.c, but do not check for SHF_ALLOC on the
9169 relcoation section, since relocations sections are
9170 never allocated under the BPABI. The comments above
9171 about Unixware notwithstanding, we include all of the
9172 relocations here. */
9173 if (htab
->symbian_p
)
9176 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
9177 ? SHT_REL
: SHT_RELA
);
9179 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
9181 Elf_Internal_Shdr
*hdr
9182 = elf_elfsections (output_bfd
)[i
];
9183 if (hdr
->sh_type
== type
)
9185 if (dyn
.d_tag
== DT_RELSZ
9186 || dyn
.d_tag
== DT_RELASZ
)
9187 dyn
.d_un
.d_val
+= hdr
->sh_size
;
9188 else if ((ufile_ptr
) hdr
->sh_offset
9189 <= dyn
.d_un
.d_val
- 1)
9190 dyn
.d_un
.d_val
= hdr
->sh_offset
;
9193 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9197 /* Set the bottom bit of DT_INIT/FINI if the
9198 corresponding function is Thumb. */
9200 name
= info
->init_function
;
9203 name
= info
->fini_function
;
9205 /* If it wasn't set by elf_bfd_final_link
9206 then there is nothing to adjust. */
9207 if (dyn
.d_un
.d_val
!= 0)
9209 struct elf_link_hash_entry
* eh
;
9211 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
9212 FALSE
, FALSE
, TRUE
);
9213 if (eh
!= (struct elf_link_hash_entry
*) NULL
9214 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
9216 dyn
.d_un
.d_val
|= 1;
9217 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9224 /* Fill in the first entry in the procedure linkage table. */
9225 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
9227 const bfd_vma
*plt0_entry
;
9228 bfd_vma got_address
, plt_address
, got_displacement
;
9230 /* Calculate the addresses of the GOT and PLT. */
9231 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
9232 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
9234 if (htab
->vxworks_p
)
9236 /* The VxWorks GOT is relocated by the dynamic linker.
9237 Therefore, we must emit relocations rather than simply
9238 computing the values now. */
9239 Elf_Internal_Rela rel
;
9241 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
9242 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
9243 splt
->contents
+ 0);
9244 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
9245 splt
->contents
+ 4);
9246 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
9247 splt
->contents
+ 8);
9248 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
9250 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
9251 rel
.r_offset
= plt_address
+ 12;
9252 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9254 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
9255 htab
->srelplt2
->contents
);
9259 got_displacement
= got_address
- (plt_address
+ 16);
9261 plt0_entry
= elf32_arm_plt0_entry
;
9262 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
9263 splt
->contents
+ 0);
9264 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
9265 splt
->contents
+ 4);
9266 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
9267 splt
->contents
+ 8);
9268 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
9269 splt
->contents
+ 12);
9271 #ifdef FOUR_WORD_PLT
9272 /* The displacement value goes in the otherwise-unused
9273 last word of the second entry. */
9274 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
9276 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
9281 /* UnixWare sets the entsize of .plt to 4, although that doesn't
9282 really seem like the right value. */
9283 if (splt
->output_section
->owner
== output_bfd
)
9284 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
9286 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
9288 /* Correct the .rel(a).plt.unloaded relocations. They will have
9289 incorrect symbol indexes. */
9293 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
9294 / htab
->plt_entry_size
);
9295 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
9297 for (; num_plts
; num_plts
--)
9299 Elf_Internal_Rela rel
;
9301 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
9302 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9303 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
9304 p
+= RELOC_SIZE (htab
);
9306 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
9307 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
9308 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
9309 p
+= RELOC_SIZE (htab
);
9314 /* Fill in the first three entries in the global offset table. */
9320 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
9322 bfd_put_32 (output_bfd
,
9323 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
9325 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
9326 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
9329 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
9336 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
9338 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
9339 struct elf32_arm_link_hash_table
*globals
;
9341 i_ehdrp
= elf_elfheader (abfd
);
9343 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
9344 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
9346 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
9347 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
9351 globals
= elf32_arm_hash_table (link_info
);
9352 if (globals
->byteswap_code
)
9353 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
9357 static enum elf_reloc_type_class
9358 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
9360 switch ((int) ELF32_R_TYPE (rela
->r_info
))
9362 case R_ARM_RELATIVE
:
9363 return reloc_class_relative
;
9364 case R_ARM_JUMP_SLOT
:
9365 return reloc_class_plt
;
9367 return reloc_class_copy
;
9369 return reloc_class_normal
;
9373 /* Set the right machine number for an Arm ELF file. */
9376 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
9378 if (hdr
->sh_type
== SHT_NOTE
)
9379 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
9385 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
9387 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
9390 /* Return TRUE if this is an unwinding table entry. */
9393 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
9395 return (CONST_STRNEQ (name
, ELF_STRING_ARM_unwind
)
9396 || CONST_STRNEQ (name
, ELF_STRING_ARM_unwind_once
));
9400 /* Set the type and flags for an ARM section. We do this by
9401 the section name, which is a hack, but ought to work. */
9404 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
9408 name
= bfd_get_section_name (abfd
, sec
);
9410 if (is_arm_elf_unwind_section_name (abfd
, name
))
9412 hdr
->sh_type
= SHT_ARM_EXIDX
;
9413 hdr
->sh_flags
|= SHF_LINK_ORDER
;
9418 /* Handle an ARM specific section when reading an object file. This is
9419 called when bfd_section_from_shdr finds a section with an unknown
9423 elf32_arm_section_from_shdr (bfd
*abfd
,
9424 Elf_Internal_Shdr
* hdr
,
9428 /* There ought to be a place to keep ELF backend specific flags, but
9429 at the moment there isn't one. We just keep track of the
9430 sections by their name, instead. Fortunately, the ABI gives
9431 names for all the ARM specific sections, so we will probably get
9433 switch (hdr
->sh_type
)
9436 case SHT_ARM_PREEMPTMAP
:
9437 case SHT_ARM_ATTRIBUTES
:
9444 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
9450 /* A structure used to record a list of sections, independently
9451 of the next and prev fields in the asection structure. */
9452 typedef struct section_list
9455 struct section_list
* next
;
9456 struct section_list
* prev
;
9460 /* Unfortunately we need to keep a list of sections for which
9461 an _arm_elf_section_data structure has been allocated. This
9462 is because it is possible for functions like elf32_arm_write_section
9463 to be called on a section which has had an elf_data_structure
9464 allocated for it (and so the used_by_bfd field is valid) but
9465 for which the ARM extended version of this structure - the
9466 _arm_elf_section_data structure - has not been allocated. */
9467 static section_list
* sections_with_arm_elf_section_data
= NULL
;
9470 record_section_with_arm_elf_section_data (asection
* sec
)
9472 struct section_list
* entry
;
9474 entry
= bfd_malloc (sizeof (* entry
));
9478 entry
->next
= sections_with_arm_elf_section_data
;
9480 if (entry
->next
!= NULL
)
9481 entry
->next
->prev
= entry
;
9482 sections_with_arm_elf_section_data
= entry
;
9485 static struct section_list
*
9486 find_arm_elf_section_entry (asection
* sec
)
9488 struct section_list
* entry
;
9489 static struct section_list
* last_entry
= NULL
;
9491 /* This is a short cut for the typical case where the sections are added
9492 to the sections_with_arm_elf_section_data list in forward order and
9493 then looked up here in backwards order. This makes a real difference
9494 to the ld-srec/sec64k.exp linker test. */
9495 entry
= sections_with_arm_elf_section_data
;
9496 if (last_entry
!= NULL
)
9498 if (last_entry
->sec
== sec
)
9500 else if (last_entry
->next
!= NULL
9501 && last_entry
->next
->sec
== sec
)
9502 entry
= last_entry
->next
;
9505 for (; entry
; entry
= entry
->next
)
9506 if (entry
->sec
== sec
)
9510 /* Record the entry prior to this one - it is the entry we are most
9511 likely to want to locate next time. Also this way if we have been
9512 called from unrecord_section_with_arm_elf_section_data() we will not
9513 be caching a pointer that is about to be freed. */
9514 last_entry
= entry
->prev
;
9519 static _arm_elf_section_data
*
9520 get_arm_elf_section_data (asection
* sec
)
9522 struct section_list
* entry
;
9524 entry
= find_arm_elf_section_entry (sec
);
9527 return elf32_arm_section_data (entry
->sec
);
9533 unrecord_section_with_arm_elf_section_data (asection
* sec
)
9535 struct section_list
* entry
;
9537 entry
= find_arm_elf_section_entry (sec
);
9541 if (entry
->prev
!= NULL
)
9542 entry
->prev
->next
= entry
->next
;
9543 if (entry
->next
!= NULL
)
9544 entry
->next
->prev
= entry
->prev
;
9545 if (entry
== sections_with_arm_elf_section_data
)
9546 sections_with_arm_elf_section_data
= entry
->next
;
9555 struct bfd_link_info
*info
;
9558 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
9559 asection
*, struct elf_link_hash_entry
*);
9560 } output_arch_syminfo
;
9562 enum map_symbol_type
9570 /* Output a single PLT mapping symbol. */
9573 elf32_arm_ouput_plt_map_sym (output_arch_syminfo
*osi
,
9574 enum map_symbol_type type
,
9577 static const char *names
[3] = {"$a", "$t", "$d"};
9578 struct elf32_arm_link_hash_table
*htab
;
9579 Elf_Internal_Sym sym
;
9581 htab
= elf32_arm_hash_table (osi
->info
);
9582 sym
.st_value
= osi
->sec
->output_section
->vma
9583 + osi
->sec
->output_offset
9587 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
9588 sym
.st_shndx
= osi
->sec_shndx
;
9589 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
))
9595 /* Output mapping symbols for PLT entries associated with H. */
9598 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
9600 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
9601 struct elf32_arm_link_hash_table
*htab
;
9602 struct elf32_arm_link_hash_entry
*eh
;
9605 htab
= elf32_arm_hash_table (osi
->info
);
9607 if (h
->root
.type
== bfd_link_hash_indirect
)
9610 if (h
->root
.type
== bfd_link_hash_warning
)
9611 /* When warning symbols are created, they **replace** the "real"
9612 entry in the hash table, thus we never get to see the real
9613 symbol in a hash traversal. So look at it now. */
9614 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9616 if (h
->plt
.offset
== (bfd_vma
) -1)
9619 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9620 addr
= h
->plt
.offset
;
9621 if (htab
->symbian_p
)
9623 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9625 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
9628 else if (htab
->vxworks_p
)
9630 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9632 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
9634 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
9636 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
9641 bfd_boolean thumb_stub
;
9643 thumb_stub
= eh
->plt_thumb_refcount
> 0 && !htab
->use_blx
;
9646 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
9649 #ifdef FOUR_WORD_PLT
9650 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9652 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
9655 /* A three-word PLT with no Thumb thunk contains only Arm code,
9656 so only need to output a mapping symbol for the first PLT entry and
9657 entries with thumb thunks. */
9658 if (thumb_stub
|| addr
== 20)
9660 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9670 /* Output mapping symbols for linker generated sections. */
9673 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
9674 struct bfd_link_info
*info
,
9675 void *finfo
, bfd_boolean (*func
) (void *, const char *,
9678 struct elf_link_hash_entry
*))
9680 output_arch_syminfo osi
;
9681 struct elf32_arm_link_hash_table
*htab
;
9685 htab
= elf32_arm_hash_table (info
);
9686 check_use_blx(htab
);
9692 /* ARM->Thumb glue. */
9693 if (htab
->arm_glue_size
> 0)
9695 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
9696 ARM2THUMB_GLUE_SECTION_NAME
);
9698 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
9699 (output_bfd
, osi
.sec
->output_section
);
9700 if (info
->shared
|| htab
->root
.is_relocatable_executable
9701 || htab
->pic_veneer
)
9702 size
= ARM2THUMB_PIC_GLUE_SIZE
;
9703 else if (htab
->use_blx
)
9704 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
9706 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
9708 for (offset
= 0; offset
< htab
->arm_glue_size
; offset
+= size
)
9710 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, offset
);
9711 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, offset
+ size
- 4);
9715 /* Thumb->ARM glue. */
9716 if (htab
->thumb_glue_size
> 0)
9718 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
9719 THUMB2ARM_GLUE_SECTION_NAME
);
9721 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
9722 (output_bfd
, osi
.sec
->output_section
);
9723 size
= THUMB2ARM_GLUE_SIZE
;
9725 for (offset
= 0; offset
< htab
->thumb_glue_size
; offset
+= size
)
9727 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_THUMB
, offset
);
9728 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, offset
+ 4);
9732 /* Finally, output mapping symbols for the PLT. */
9733 if (!htab
->splt
|| htab
->splt
->size
== 0)
9736 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
9737 htab
->splt
->output_section
);
9738 osi
.sec
= htab
->splt
;
9739 /* Output mapping symbols for the plt header. SymbianOS does not have a
9741 if (htab
->vxworks_p
)
9743 /* VxWorks shared libraries have no PLT header. */
9746 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
9748 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 12))
9752 else if (!htab
->symbian_p
)
9754 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
9756 #ifndef FOUR_WORD_PLT
9757 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 16))
9762 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
9766 /* Allocate target specific section data. */
9769 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
9771 if (!sec
->used_by_bfd
)
9773 _arm_elf_section_data
*sdata
;
9774 bfd_size_type amt
= sizeof (*sdata
);
9776 sdata
= bfd_zalloc (abfd
, amt
);
9779 sec
->used_by_bfd
= sdata
;
9782 record_section_with_arm_elf_section_data (sec
);
9784 return _bfd_elf_new_section_hook (abfd
, sec
);
9788 /* Used to order a list of mapping symbols by address. */
9791 elf32_arm_compare_mapping (const void * a
, const void * b
)
9793 return ((const elf32_arm_section_map
*) a
)->vma
9794 > ((const elf32_arm_section_map
*) b
)->vma
;
9798 /* Do code byteswapping. Return FALSE afterwards so that the section is
9799 written out as normal. */
9802 elf32_arm_write_section (bfd
*output_bfd
,
9803 struct bfd_link_info
*link_info
, asection
*sec
,
9806 int mapcount
, errcount
;
9807 _arm_elf_section_data
*arm_data
;
9808 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
9809 elf32_arm_section_map
*map
;
9810 elf32_vfp11_erratum_list
*errnode
;
9813 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
9817 /* If this section has not been allocated an _arm_elf_section_data
9818 structure then we cannot record anything. */
9819 arm_data
= get_arm_elf_section_data (sec
);
9820 if (arm_data
== NULL
)
9823 mapcount
= arm_data
->mapcount
;
9824 map
= arm_data
->map
;
9825 errcount
= arm_data
->erratumcount
;
9829 unsigned int endianflip
= bfd_big_endian (output_bfd
) ? 3 : 0;
9831 for (errnode
= arm_data
->erratumlist
; errnode
!= 0;
9832 errnode
= errnode
->next
)
9834 bfd_vma index
= errnode
->vma
- offset
;
9836 switch (errnode
->type
)
9838 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
9840 bfd_vma branch_to_veneer
;
9841 /* Original condition code of instruction, plus bit mask for
9842 ARM B instruction. */
9843 unsigned int insn
= (errnode
->u
.b
.vfp_insn
& 0xf0000000)
9846 /* The instruction is before the label. */
9849 /* Above offset included in -4 below. */
9850 branch_to_veneer
= errnode
->u
.b
.veneer
->vma
9853 if ((signed) branch_to_veneer
< -(1 << 25)
9854 || (signed) branch_to_veneer
>= (1 << 25))
9855 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
9856 "range"), output_bfd
);
9858 insn
|= (branch_to_veneer
>> 2) & 0xffffff;
9859 contents
[endianflip
^ index
] = insn
& 0xff;
9860 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
9861 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
9862 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
9866 case VFP11_ERRATUM_ARM_VENEER
:
9868 bfd_vma branch_from_veneer
;
9871 /* Take size of veneer into account. */
9872 branch_from_veneer
= errnode
->u
.v
.branch
->vma
9873 - errnode
->vma
- 12;
9875 if ((signed) branch_from_veneer
< -(1 << 25)
9876 || (signed) branch_from_veneer
>= (1 << 25))
9877 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
9878 "range"), output_bfd
);
9880 /* Original instruction. */
9881 insn
= errnode
->u
.v
.branch
->u
.b
.vfp_insn
;
9882 contents
[endianflip
^ index
] = insn
& 0xff;
9883 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
9884 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
9885 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
9887 /* Branch back to insn after original insn. */
9888 insn
= 0xea000000 | ((branch_from_veneer
>> 2) & 0xffffff);
9889 contents
[endianflip
^ (index
+ 4)] = insn
& 0xff;
9890 contents
[endianflip
^ (index
+ 5)] = (insn
>> 8) & 0xff;
9891 contents
[endianflip
^ (index
+ 6)] = (insn
>> 16) & 0xff;
9892 contents
[endianflip
^ (index
+ 7)] = (insn
>> 24) & 0xff;
9905 if (globals
->byteswap_code
)
9907 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
9910 for (i
= 0; i
< mapcount
; i
++)
9912 if (i
== mapcount
- 1)
9915 end
= map
[i
+ 1].vma
;
9917 switch (map
[i
].type
)
9920 /* Byte swap code words. */
9921 while (ptr
+ 3 < end
)
9923 tmp
= contents
[ptr
];
9924 contents
[ptr
] = contents
[ptr
+ 3];
9925 contents
[ptr
+ 3] = tmp
;
9926 tmp
= contents
[ptr
+ 1];
9927 contents
[ptr
+ 1] = contents
[ptr
+ 2];
9928 contents
[ptr
+ 2] = tmp
;
9934 /* Byte swap code halfwords. */
9935 while (ptr
+ 1 < end
)
9937 tmp
= contents
[ptr
];
9938 contents
[ptr
] = contents
[ptr
+ 1];
9939 contents
[ptr
+ 1] = tmp
;
9945 /* Leave data alone. */
9953 arm_data
->mapcount
= 0;
9954 arm_data
->mapsize
= 0;
9955 arm_data
->map
= NULL
;
9956 unrecord_section_with_arm_elf_section_data (sec
);
9962 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
9964 void * ignore ATTRIBUTE_UNUSED
)
9966 unrecord_section_with_arm_elf_section_data (sec
);
9970 elf32_arm_close_and_cleanup (bfd
* abfd
)
9973 bfd_map_over_sections (abfd
,
9974 unrecord_section_via_map_over_sections
,
9977 return _bfd_elf_close_and_cleanup (abfd
);
9981 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
9984 bfd_map_over_sections (abfd
,
9985 unrecord_section_via_map_over_sections
,
9988 return _bfd_free_cached_info (abfd
);
9991 /* Display STT_ARM_TFUNC symbols as functions. */
9994 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
9997 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
9999 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
10000 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
10004 /* Mangle thumb function symbols as we read them in. */
10007 elf32_arm_swap_symbol_in (bfd
* abfd
,
10010 Elf_Internal_Sym
*dst
)
10012 if (!bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
10015 /* New EABI objects mark thumb function symbols by setting the low bit of
10016 the address. Turn these into STT_ARM_TFUNC. */
10017 if (ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
10018 && (dst
->st_value
& 1))
10020 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
10021 dst
->st_value
&= ~(bfd_vma
) 1;
10027 /* Mangle thumb function symbols as we write them out. */
10030 elf32_arm_swap_symbol_out (bfd
*abfd
,
10031 const Elf_Internal_Sym
*src
,
10035 Elf_Internal_Sym newsym
;
10037 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
10038 of the address set, as per the new EABI. We do this unconditionally
10039 because objcopy does not set the elf header flags until after
10040 it writes out the symbol table. */
10041 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
10044 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
10045 if (newsym
.st_shndx
!= SHN_UNDEF
)
10047 /* Do this only for defined symbols. At link type, the static
10048 linker will simulate the work of dynamic linker of resolving
10049 symbols and will carry over the thumbness of found symbols to
10050 the output symbol table. It's not clear how it happens, but
10051 the thumbness of undefined symbols can well be different at
10052 runtime, and writing '1' for them will be confusing for users
10053 and possibly for dynamic linker itself.
10055 newsym
.st_value
|= 1;
10060 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
10063 /* Add the PT_ARM_EXIDX program header. */
10066 elf32_arm_modify_segment_map (bfd
*abfd
,
10067 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
10069 struct elf_segment_map
*m
;
10072 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
10073 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
10075 /* If there is already a PT_ARM_EXIDX header, then we do not
10076 want to add another one. This situation arises when running
10077 "strip"; the input binary already has the header. */
10078 m
= elf_tdata (abfd
)->segment_map
;
10079 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
10083 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
10086 m
->p_type
= PT_ARM_EXIDX
;
10088 m
->sections
[0] = sec
;
10090 m
->next
= elf_tdata (abfd
)->segment_map
;
10091 elf_tdata (abfd
)->segment_map
= m
;
10098 /* We may add a PT_ARM_EXIDX program header. */
10101 elf32_arm_additional_program_headers (bfd
*abfd
,
10102 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
10106 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
10107 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
10113 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
10115 elf32_arm_is_function_type (unsigned int type
)
10117 return (type
== STT_FUNC
) || (type
== STT_ARM_TFUNC
);
10120 /* We use this to override swap_symbol_in and swap_symbol_out. */
10121 const struct elf_size_info elf32_arm_size_info
= {
10122 sizeof (Elf32_External_Ehdr
),
10123 sizeof (Elf32_External_Phdr
),
10124 sizeof (Elf32_External_Shdr
),
10125 sizeof (Elf32_External_Rel
),
10126 sizeof (Elf32_External_Rela
),
10127 sizeof (Elf32_External_Sym
),
10128 sizeof (Elf32_External_Dyn
),
10129 sizeof (Elf_External_Note
),
10133 ELFCLASS32
, EV_CURRENT
,
10134 bfd_elf32_write_out_phdrs
,
10135 bfd_elf32_write_shdrs_and_ehdr
,
10136 bfd_elf32_checksum_contents
,
10137 bfd_elf32_write_relocs
,
10138 elf32_arm_swap_symbol_in
,
10139 elf32_arm_swap_symbol_out
,
10140 bfd_elf32_slurp_reloc_table
,
10141 bfd_elf32_slurp_symbol_table
,
10142 bfd_elf32_swap_dyn_in
,
10143 bfd_elf32_swap_dyn_out
,
10144 bfd_elf32_swap_reloc_in
,
10145 bfd_elf32_swap_reloc_out
,
10146 bfd_elf32_swap_reloca_in
,
10147 bfd_elf32_swap_reloca_out
10150 #define ELF_ARCH bfd_arch_arm
10151 #define ELF_MACHINE_CODE EM_ARM
10152 #ifdef __QNXTARGET__
10153 #define ELF_MAXPAGESIZE 0x1000
10155 #define ELF_MAXPAGESIZE 0x8000
10157 #define ELF_MINPAGESIZE 0x1000
10158 #define ELF_COMMONPAGESIZE 0x1000
10160 #define bfd_elf32_mkobject elf32_arm_mkobject
10162 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
10163 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
10164 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
10165 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
10166 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
10167 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
10168 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
10169 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
10170 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
10171 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
10172 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
10173 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
10174 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
10176 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
10177 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
10178 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
10179 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
10180 #define elf_backend_check_relocs elf32_arm_check_relocs
10181 #define elf_backend_relocate_section elf32_arm_relocate_section
10182 #define elf_backend_write_section elf32_arm_write_section
10183 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
10184 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
10185 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
10186 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
10187 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
10188 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
10189 #define elf_backend_post_process_headers elf32_arm_post_process_headers
10190 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
10191 #define elf_backend_object_p elf32_arm_object_p
10192 #define elf_backend_section_flags elf32_arm_section_flags
10193 #define elf_backend_fake_sections elf32_arm_fake_sections
10194 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
10195 #define elf_backend_final_write_processing elf32_arm_final_write_processing
10196 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
10197 #define elf_backend_symbol_processing elf32_arm_symbol_processing
10198 #define elf_backend_size_info elf32_arm_size_info
10199 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
10200 #define elf_backend_additional_program_headers \
10201 elf32_arm_additional_program_headers
10202 #define elf_backend_output_arch_local_syms \
10203 elf32_arm_output_arch_local_syms
10204 #define elf_backend_begin_write_processing \
10205 elf32_arm_begin_write_processing
10206 #define elf_backend_is_function_type elf32_arm_is_function_type
10208 #define elf_backend_can_refcount 1
10209 #define elf_backend_can_gc_sections 1
10210 #define elf_backend_plt_readonly 1
10211 #define elf_backend_want_got_plt 1
10212 #define elf_backend_want_plt_sym 0
10213 #define elf_backend_may_use_rel_p 1
10214 #define elf_backend_may_use_rela_p 0
10215 #define elf_backend_default_use_rela_p 0
10217 #define elf_backend_got_header_size 12
10219 #undef elf_backend_obj_attrs_vendor
10220 #define elf_backend_obj_attrs_vendor "aeabi"
10221 #undef elf_backend_obj_attrs_section
10222 #define elf_backend_obj_attrs_section ".ARM.attributes"
10223 #undef elf_backend_obj_attrs_arg_type
10224 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
10225 #undef elf_backend_obj_attrs_section_type
10226 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
10228 #include "elf32-target.h"
10230 /* VxWorks Targets */
10232 #undef TARGET_LITTLE_SYM
10233 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
10234 #undef TARGET_LITTLE_NAME
10235 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
10236 #undef TARGET_BIG_SYM
10237 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
10238 #undef TARGET_BIG_NAME
10239 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
10241 /* Like elf32_arm_link_hash_table_create -- but overrides
10242 appropriately for VxWorks. */
10243 static struct bfd_link_hash_table
*
10244 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
10246 struct bfd_link_hash_table
*ret
;
10248 ret
= elf32_arm_link_hash_table_create (abfd
);
10251 struct elf32_arm_link_hash_table
*htab
10252 = (struct elf32_arm_link_hash_table
*) ret
;
10254 htab
->vxworks_p
= 1;
10260 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10262 elf32_arm_final_write_processing (abfd
, linker
);
10263 elf_vxworks_final_write_processing (abfd
, linker
);
10267 #define elf32_bed elf32_arm_vxworks_bed
10269 #undef bfd_elf32_bfd_link_hash_table_create
10270 #define bfd_elf32_bfd_link_hash_table_create \
10271 elf32_arm_vxworks_link_hash_table_create
10272 #undef elf_backend_add_symbol_hook
10273 #define elf_backend_add_symbol_hook \
10274 elf_vxworks_add_symbol_hook
10275 #undef elf_backend_final_write_processing
10276 #define elf_backend_final_write_processing \
10277 elf32_arm_vxworks_final_write_processing
10278 #undef elf_backend_emit_relocs
10279 #define elf_backend_emit_relocs \
10280 elf_vxworks_emit_relocs
10282 #undef elf_backend_may_use_rel_p
10283 #define elf_backend_may_use_rel_p 0
10284 #undef elf_backend_may_use_rela_p
10285 #define elf_backend_may_use_rela_p 1
10286 #undef elf_backend_default_use_rela_p
10287 #define elf_backend_default_use_rela_p 1
10288 #undef elf_backend_want_plt_sym
10289 #define elf_backend_want_plt_sym 1
10290 #undef ELF_MAXPAGESIZE
10291 #define ELF_MAXPAGESIZE 0x1000
10293 #include "elf32-target.h"
10296 /* Symbian OS Targets */
10298 #undef TARGET_LITTLE_SYM
10299 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
10300 #undef TARGET_LITTLE_NAME
10301 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
10302 #undef TARGET_BIG_SYM
10303 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
10304 #undef TARGET_BIG_NAME
10305 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
10307 /* Like elf32_arm_link_hash_table_create -- but overrides
10308 appropriately for Symbian OS. */
10309 static struct bfd_link_hash_table
*
10310 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
10312 struct bfd_link_hash_table
*ret
;
10314 ret
= elf32_arm_link_hash_table_create (abfd
);
10317 struct elf32_arm_link_hash_table
*htab
10318 = (struct elf32_arm_link_hash_table
*)ret
;
10319 /* There is no PLT header for Symbian OS. */
10320 htab
->plt_header_size
= 0;
10321 /* The PLT entries are each three instructions. */
10322 htab
->plt_entry_size
= 4 * NUM_ELEM (elf32_arm_symbian_plt_entry
);
10323 htab
->symbian_p
= 1;
10324 /* Symbian uses armv5t or above, so use_blx is always true. */
10326 htab
->root
.is_relocatable_executable
= 1;
10331 static const struct bfd_elf_special_section
10332 elf32_arm_symbian_special_sections
[] =
10334 /* In a BPABI executable, the dynamic linking sections do not go in
10335 the loadable read-only segment. The post-linker may wish to
10336 refer to these sections, but they are not part of the final
10338 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC
, 0 },
10339 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB
, 0 },
10340 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM
, 0 },
10341 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS
, 0 },
10342 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH
, 0 },
10343 /* These sections do not need to be writable as the SymbianOS
10344 postlinker will arrange things so that no dynamic relocation is
10346 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
10347 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
10348 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
10349 { NULL
, 0, 0, 0, 0 }
10353 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
10354 struct bfd_link_info
*link_info
)
10356 /* BPABI objects are never loaded directly by an OS kernel; they are
10357 processed by a postlinker first, into an OS-specific format. If
10358 the D_PAGED bit is set on the file, BFD will align segments on
10359 page boundaries, so that an OS can directly map the file. With
10360 BPABI objects, that just results in wasted space. In addition,
10361 because we clear the D_PAGED bit, map_sections_to_segments will
10362 recognize that the program headers should not be mapped into any
10363 loadable segment. */
10364 abfd
->flags
&= ~D_PAGED
;
10365 elf32_arm_begin_write_processing(abfd
, link_info
);
10369 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
10370 struct bfd_link_info
*info
)
10372 struct elf_segment_map
*m
;
10375 /* BPABI shared libraries and executables should have a PT_DYNAMIC
10376 segment. However, because the .dynamic section is not marked
10377 with SEC_LOAD, the generic ELF code will not create such a
10379 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
10382 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
10383 if (m
->p_type
== PT_DYNAMIC
)
10388 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
10389 m
->next
= elf_tdata (abfd
)->segment_map
;
10390 elf_tdata (abfd
)->segment_map
= m
;
10394 /* Also call the generic arm routine. */
10395 return elf32_arm_modify_segment_map (abfd
, info
);
10399 #define elf32_bed elf32_arm_symbian_bed
10401 /* The dynamic sections are not allocated on SymbianOS; the postlinker
10402 will process them and then discard them. */
10403 #undef ELF_DYNAMIC_SEC_FLAGS
10404 #define ELF_DYNAMIC_SEC_FLAGS \
10405 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
10407 #undef bfd_elf32_bfd_link_hash_table_create
10408 #define bfd_elf32_bfd_link_hash_table_create \
10409 elf32_arm_symbian_link_hash_table_create
10410 #undef elf_backend_add_symbol_hook
10412 #undef elf_backend_special_sections
10413 #define elf_backend_special_sections elf32_arm_symbian_special_sections
10415 #undef elf_backend_begin_write_processing
10416 #define elf_backend_begin_write_processing \
10417 elf32_arm_symbian_begin_write_processing
10418 #undef elf_backend_final_write_processing
10419 #define elf_backend_final_write_processing \
10420 elf32_arm_final_write_processing
10421 #undef elf_backend_emit_relocs
10423 #undef elf_backend_modify_segment_map
10424 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
10426 /* There is no .got section for BPABI objects, and hence no header. */
10427 #undef elf_backend_got_header_size
10428 #define elf_backend_got_header_size 0
10430 /* Similarly, there is no .got.plt section. */
10431 #undef elf_backend_want_got_plt
10432 #define elf_backend_want_got_plt 0
10434 #undef elf_backend_may_use_rel_p
10435 #define elf_backend_may_use_rel_p 1
10436 #undef elf_backend_may_use_rela_p
10437 #define elf_backend_may_use_rela_p 0
10438 #undef elf_backend_default_use_rela_p
10439 #define elf_backend_default_use_rela_p 0
10440 #undef elf_backend_want_plt_sym
10441 #define elf_backend_want_plt_sym 0
10442 #undef ELF_MAXPAGESIZE
10443 #define ELF_MAXPAGESIZE 0x8000
10445 #include "elf32-target.h"