1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
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 2 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, MA 02110-1301, USA. */
23 #include "libiberty.h"
26 #include "elf-vxworks.h"
30 #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
33 /* Return the relocation section associated with NAME. HTAB is the
34 bfd's elf32_arm_link_hash_entry. */
35 #define RELOC_SECTION(HTAB, NAME) \
36 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
38 /* Return size of a relocation entry. HTAB is the bfd's
39 elf32_arm_link_hash_entry. */
40 #define RELOC_SIZE(HTAB) \
42 ? sizeof (Elf32_External_Rel) \
43 : sizeof (Elf32_External_Rela))
45 /* Return function to swap relocations in. HTAB is the bfd's
46 elf32_arm_link_hash_entry. */
47 #define SWAP_RELOC_IN(HTAB) \
49 ? bfd_elf32_swap_reloc_in \
50 : bfd_elf32_swap_reloca_in)
52 /* Return function to swap relocations out. HTAB is the bfd's
53 elf32_arm_link_hash_entry. */
54 #define SWAP_RELOC_OUT(HTAB) \
56 ? bfd_elf32_swap_reloc_out \
57 : bfd_elf32_swap_reloca_out)
59 #define elf_info_to_howto 0
60 #define elf_info_to_howto_rel elf32_arm_info_to_howto
62 #define ARM_ELF_ABI_VERSION 0
63 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
65 static struct elf_backend_data elf32_arm_vxworks_bed
;
67 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
68 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
71 static reloc_howto_type elf32_arm_howto_table_1
[] =
74 HOWTO (R_ARM_NONE
, /* type */
76 0, /* size (0 = byte, 1 = short, 2 = long) */
78 FALSE
, /* pc_relative */
80 complain_overflow_dont
,/* complain_on_overflow */
81 bfd_elf_generic_reloc
, /* special_function */
82 "R_ARM_NONE", /* name */
83 FALSE
, /* partial_inplace */
86 FALSE
), /* pcrel_offset */
88 HOWTO (R_ARM_PC24
, /* type */
90 2, /* size (0 = byte, 1 = short, 2 = long) */
92 TRUE
, /* pc_relative */
94 complain_overflow_signed
,/* complain_on_overflow */
95 bfd_elf_generic_reloc
, /* special_function */
96 "R_ARM_PC24", /* name */
97 FALSE
, /* partial_inplace */
98 0x00ffffff, /* src_mask */
99 0x00ffffff, /* dst_mask */
100 TRUE
), /* pcrel_offset */
102 /* 32 bit absolute */
103 HOWTO (R_ARM_ABS32
, /* type */
105 2, /* size (0 = byte, 1 = short, 2 = long) */
107 FALSE
, /* pc_relative */
109 complain_overflow_bitfield
,/* complain_on_overflow */
110 bfd_elf_generic_reloc
, /* special_function */
111 "R_ARM_ABS32", /* name */
112 FALSE
, /* partial_inplace */
113 0xffffffff, /* src_mask */
114 0xffffffff, /* dst_mask */
115 FALSE
), /* pcrel_offset */
117 /* standard 32bit pc-relative reloc */
118 HOWTO (R_ARM_REL32
, /* type */
120 2, /* size (0 = byte, 1 = short, 2 = long) */
122 TRUE
, /* pc_relative */
124 complain_overflow_bitfield
,/* complain_on_overflow */
125 bfd_elf_generic_reloc
, /* special_function */
126 "R_ARM_REL32", /* name */
127 FALSE
, /* partial_inplace */
128 0xffffffff, /* src_mask */
129 0xffffffff, /* dst_mask */
130 TRUE
), /* pcrel_offset */
132 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
133 HOWTO (R_ARM_LDR_PC_G0
, /* type */
135 0, /* size (0 = byte, 1 = short, 2 = long) */
137 TRUE
, /* pc_relative */
139 complain_overflow_dont
,/* complain_on_overflow */
140 bfd_elf_generic_reloc
, /* special_function */
141 "R_ARM_LDR_PC_G0", /* name */
142 FALSE
, /* partial_inplace */
143 0xffffffff, /* src_mask */
144 0xffffffff, /* dst_mask */
145 TRUE
), /* pcrel_offset */
147 /* 16 bit absolute */
148 HOWTO (R_ARM_ABS16
, /* type */
150 1, /* size (0 = byte, 1 = short, 2 = long) */
152 FALSE
, /* pc_relative */
154 complain_overflow_bitfield
,/* complain_on_overflow */
155 bfd_elf_generic_reloc
, /* special_function */
156 "R_ARM_ABS16", /* name */
157 FALSE
, /* partial_inplace */
158 0x0000ffff, /* src_mask */
159 0x0000ffff, /* dst_mask */
160 FALSE
), /* pcrel_offset */
162 /* 12 bit absolute */
163 HOWTO (R_ARM_ABS12
, /* type */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
167 FALSE
, /* pc_relative */
169 complain_overflow_bitfield
,/* complain_on_overflow */
170 bfd_elf_generic_reloc
, /* special_function */
171 "R_ARM_ABS12", /* name */
172 FALSE
, /* partial_inplace */
173 0x00000fff, /* src_mask */
174 0x00000fff, /* dst_mask */
175 FALSE
), /* pcrel_offset */
177 HOWTO (R_ARM_THM_ABS5
, /* type */
179 1, /* size (0 = byte, 1 = short, 2 = long) */
181 FALSE
, /* pc_relative */
183 complain_overflow_bitfield
,/* complain_on_overflow */
184 bfd_elf_generic_reloc
, /* special_function */
185 "R_ARM_THM_ABS5", /* name */
186 FALSE
, /* partial_inplace */
187 0x000007e0, /* src_mask */
188 0x000007e0, /* dst_mask */
189 FALSE
), /* pcrel_offset */
192 HOWTO (R_ARM_ABS8
, /* type */
194 0, /* size (0 = byte, 1 = short, 2 = long) */
196 FALSE
, /* pc_relative */
198 complain_overflow_bitfield
,/* complain_on_overflow */
199 bfd_elf_generic_reloc
, /* special_function */
200 "R_ARM_ABS8", /* name */
201 FALSE
, /* partial_inplace */
202 0x000000ff, /* src_mask */
203 0x000000ff, /* dst_mask */
204 FALSE
), /* pcrel_offset */
206 HOWTO (R_ARM_SBREL32
, /* type */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
210 FALSE
, /* pc_relative */
212 complain_overflow_dont
,/* complain_on_overflow */
213 bfd_elf_generic_reloc
, /* special_function */
214 "R_ARM_SBREL32", /* name */
215 FALSE
, /* partial_inplace */
216 0xffffffff, /* src_mask */
217 0xffffffff, /* dst_mask */
218 FALSE
), /* pcrel_offset */
220 /* FIXME: Has two more bits of offset in Thumb32. */
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_signed
,/* complain_on_overflow */
839 bfd_elf_generic_reloc
, /* special_function */
840 "R_ARM_THM_ALU_PREL_11_0",/* name */
841 FALSE
, /* partial_inplace */
842 0x040070ff, /* src_mask */
843 0x040070ff, /* 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_signed
,/* complain_on_overflow */
853 bfd_elf_generic_reloc
, /* special_function */
854 "R_ARM_THM_PC12", /* name */
855 FALSE
, /* partial_inplace */
856 0x040070ff, /* src_mask */
857 0x040070ff, /* 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 /* Support for core dump NOTE sections */
1793 elf32_arm_nabi_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1798 switch (note
->descsz
)
1803 case 148: /* Linux/ARM 32-bit*/
1805 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1808 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1817 /* Make a ".reg/999" section. */
1818 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1819 size
, note
->descpos
+ offset
);
1823 elf32_arm_nabi_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1825 switch (note
->descsz
)
1830 case 124: /* Linux/ARM elf_prpsinfo */
1831 elf_tdata (abfd
)->core_program
1832 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
1833 elf_tdata (abfd
)->core_command
1834 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
1837 /* Note that for some reason, a spurious space is tacked
1838 onto the end of the args in some (at least one anyway)
1839 implementations, so strip it off if it exists. */
1842 char *command
= elf_tdata (abfd
)->core_command
;
1843 int n
= strlen (command
);
1845 if (0 < n
&& command
[n
- 1] == ' ')
1846 command
[n
- 1] = '\0';
1852 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1853 #define TARGET_LITTLE_NAME "elf32-littlearm"
1854 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1855 #define TARGET_BIG_NAME "elf32-bigarm"
1857 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1858 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1860 typedef unsigned long int insn32
;
1861 typedef unsigned short int insn16
;
1863 /* In lieu of proper flags, assume all EABIv4 or later objects are
1865 #define INTERWORK_FLAG(abfd) \
1866 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1867 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1869 /* The linker script knows the section names for placement.
1870 The entry_names are used to do simple name mangling on the stubs.
1871 Given a function name, and its type, the stub can be found. The
1872 name can be changed. The only requirement is the %s be present. */
1873 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1874 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1876 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1877 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1879 /* The name of the dynamic interpreter. This is put in the .interp
1881 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1883 #ifdef FOUR_WORD_PLT
1885 /* The first entry in a procedure linkage table looks like
1886 this. It is set up so that any shared library function that is
1887 called before the relocation has been set up calls the dynamic
1889 static const bfd_vma elf32_arm_plt0_entry
[] =
1891 0xe52de004, /* str lr, [sp, #-4]! */
1892 0xe59fe010, /* ldr lr, [pc, #16] */
1893 0xe08fe00e, /* add lr, pc, lr */
1894 0xe5bef008, /* ldr pc, [lr, #8]! */
1897 /* Subsequent entries in a procedure linkage table look like
1899 static const bfd_vma elf32_arm_plt_entry
[] =
1901 0xe28fc600, /* add ip, pc, #NN */
1902 0xe28cca00, /* add ip, ip, #NN */
1903 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1904 0x00000000, /* unused */
1909 /* The first entry in a procedure linkage table looks like
1910 this. It is set up so that any shared library function that is
1911 called before the relocation has been set up calls the dynamic
1913 static const bfd_vma elf32_arm_plt0_entry
[] =
1915 0xe52de004, /* str lr, [sp, #-4]! */
1916 0xe59fe004, /* ldr lr, [pc, #4] */
1917 0xe08fe00e, /* add lr, pc, lr */
1918 0xe5bef008, /* ldr pc, [lr, #8]! */
1919 0x00000000, /* &GOT[0] - . */
1922 /* Subsequent entries in a procedure linkage table look like
1924 static const bfd_vma elf32_arm_plt_entry
[] =
1926 0xe28fc600, /* add ip, pc, #0xNN00000 */
1927 0xe28cca00, /* add ip, ip, #0xNN000 */
1928 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1933 /* The format of the first entry in the procedure linkage table
1934 for a VxWorks executable. */
1935 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry
[] =
1937 0xe52dc008, /* str ip,[sp,#-8]! */
1938 0xe59fc000, /* ldr ip,[pc] */
1939 0xe59cf008, /* ldr pc,[ip,#8] */
1940 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1943 /* The format of subsequent entries in a VxWorks executable. */
1944 static const bfd_vma elf32_arm_vxworks_exec_plt_entry
[] =
1946 0xe59fc000, /* ldr ip,[pc] */
1947 0xe59cf000, /* ldr pc,[ip] */
1948 0x00000000, /* .long @got */
1949 0xe59fc000, /* ldr ip,[pc] */
1950 0xea000000, /* b _PLT */
1951 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1954 /* The format of entries in a VxWorks shared library. */
1955 static const bfd_vma elf32_arm_vxworks_shared_plt_entry
[] =
1957 0xe59fc000, /* ldr ip,[pc] */
1958 0xe79cf009, /* ldr pc,[ip,r9] */
1959 0x00000000, /* .long @got */
1960 0xe59fc000, /* ldr ip,[pc] */
1961 0xe599f008, /* ldr pc,[r9,#8] */
1962 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1965 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1966 #define PLT_THUMB_STUB_SIZE 4
1967 static const bfd_vma elf32_arm_plt_thumb_stub
[] =
1973 /* The entries in a PLT when using a DLL-based target with multiple
1975 static const bfd_vma elf32_arm_symbian_plt_entry
[] =
1977 0xe51ff004, /* ldr pc, [pc, #-4] */
1978 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
1981 /* Used to build a map of a section. This is required for mixed-endian
1984 typedef struct elf32_elf_section_map
1989 elf32_arm_section_map
;
1991 typedef struct _arm_elf_section_data
1993 struct bfd_elf_section_data elf
;
1994 unsigned int mapcount
;
1995 elf32_arm_section_map
*map
;
1997 _arm_elf_section_data
;
1999 #define elf32_arm_section_data(sec) \
2000 ((_arm_elf_section_data *) elf_section_data (sec))
2002 /* The size of the thread control block. */
2005 #define NUM_KNOWN_ATTRIBUTES 32
2007 typedef struct aeabi_attribute
2014 typedef struct aeabi_attribute_list
2016 struct aeabi_attribute_list
*next
;
2018 aeabi_attribute attr
;
2019 } aeabi_attribute_list
;
2021 struct elf32_arm_obj_tdata
2023 struct elf_obj_tdata root
;
2025 /* tls_type for each local got entry. */
2026 char *local_got_tls_type
;
2028 aeabi_attribute known_eabi_attributes
[NUM_KNOWN_ATTRIBUTES
];
2029 aeabi_attribute_list
*other_eabi_attributes
;
2032 #define elf32_arm_tdata(abfd) \
2033 ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any)
2035 #define elf32_arm_local_got_tls_type(abfd) \
2036 (elf32_arm_tdata (abfd)->local_got_tls_type)
2039 elf32_arm_mkobject (bfd
*abfd
)
2041 if (abfd
->tdata
.any
== NULL
)
2043 bfd_size_type amt
= sizeof (struct elf32_arm_obj_tdata
);
2044 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2045 if (abfd
->tdata
.any
== NULL
)
2048 return bfd_elf_mkobject (abfd
);
2051 /* The ARM linker needs to keep track of the number of relocs that it
2052 decides to copy in check_relocs for each symbol. This is so that
2053 it can discard PC relative relocs if it doesn't need them when
2054 linking with -Bsymbolic. We store the information in a field
2055 extending the regular ELF linker hash table. */
2057 /* This structure keeps track of the number of relocs we have copied
2058 for a given symbol. */
2059 struct elf32_arm_relocs_copied
2062 struct elf32_arm_relocs_copied
* next
;
2063 /* A section in dynobj. */
2065 /* Number of relocs copied in this section. */
2066 bfd_size_type count
;
2067 /* Number of PC-relative relocs copied in this section. */
2068 bfd_size_type pc_count
;
2071 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2073 /* Arm ELF linker hash entry. */
2074 struct elf32_arm_link_hash_entry
2076 struct elf_link_hash_entry root
;
2078 /* Number of PC relative relocs copied for this symbol. */
2079 struct elf32_arm_relocs_copied
* relocs_copied
;
2081 /* We reference count Thumb references to a PLT entry separately,
2082 so that we can emit the Thumb trampoline only if needed. */
2083 bfd_signed_vma plt_thumb_refcount
;
2085 /* Since PLT entries have variable size if the Thumb prologue is
2086 used, we need to record the index into .got.plt instead of
2087 recomputing it from the PLT offset. */
2088 bfd_signed_vma plt_got_offset
;
2090 #define GOT_UNKNOWN 0
2091 #define GOT_NORMAL 1
2092 #define GOT_TLS_GD 2
2093 #define GOT_TLS_IE 4
2094 unsigned char tls_type
;
2096 /* The symbol marking the real symbol location for exported thumb
2097 symbols with Arm stubs. */
2098 struct elf_link_hash_entry
*export_glue
;
2101 /* Traverse an arm ELF linker hash table. */
2102 #define elf32_arm_link_hash_traverse(table, func, info) \
2103 (elf_link_hash_traverse \
2105 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2108 /* Get the ARM elf linker hash table from a link_info structure. */
2109 #define elf32_arm_hash_table(info) \
2110 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2112 /* ARM ELF linker hash table. */
2113 struct elf32_arm_link_hash_table
2115 /* The main hash table. */
2116 struct elf_link_hash_table root
;
2118 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2119 bfd_size_type thumb_glue_size
;
2121 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2122 bfd_size_type arm_glue_size
;
2124 /* An arbitrary input BFD chosen to hold the glue sections. */
2125 bfd
* bfd_of_glue_owner
;
2127 /* Nonzero to output a BE8 image. */
2130 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2131 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2134 /* The relocation to use for R_ARM_TARGET2 relocations. */
2137 /* Nonzero to fix BX instructions for ARMv4 targets. */
2140 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2143 /* The number of bytes in the initial entry in the PLT. */
2144 bfd_size_type plt_header_size
;
2146 /* The number of bytes in the subsequent PLT etries. */
2147 bfd_size_type plt_entry_size
;
2149 /* True if the target system is VxWorks. */
2152 /* True if the target system is Symbian OS. */
2155 /* True if the target uses REL relocations. */
2158 /* Short-cuts to get to dynamic linker sections. */
2167 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2170 /* Data for R_ARM_TLS_LDM32 relocations. */
2172 bfd_signed_vma refcount
;
2176 /* Small local sym to section mapping cache. */
2177 struct sym_sec_cache sym_sec
;
2179 /* For convenience in allocate_dynrelocs. */
2183 /* Create an entry in an ARM ELF linker hash table. */
2185 static struct bfd_hash_entry
*
2186 elf32_arm_link_hash_newfunc (struct bfd_hash_entry
* entry
,
2187 struct bfd_hash_table
* table
,
2188 const char * string
)
2190 struct elf32_arm_link_hash_entry
* ret
=
2191 (struct elf32_arm_link_hash_entry
*) entry
;
2193 /* Allocate the structure if it has not already been allocated by a
2195 if (ret
== (struct elf32_arm_link_hash_entry
*) NULL
)
2196 ret
= bfd_hash_allocate (table
, sizeof (struct elf32_arm_link_hash_entry
));
2198 return (struct bfd_hash_entry
*) ret
;
2200 /* Call the allocation method of the superclass. */
2201 ret
= ((struct elf32_arm_link_hash_entry
*)
2202 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2206 ret
->relocs_copied
= NULL
;
2207 ret
->tls_type
= GOT_UNKNOWN
;
2208 ret
->plt_thumb_refcount
= 0;
2209 ret
->plt_got_offset
= -1;
2210 ret
->export_glue
= NULL
;
2213 return (struct bfd_hash_entry
*) ret
;
2216 /* Return true if NAME is the name of the relocation section associated
2220 reloc_section_p (struct elf32_arm_link_hash_table
*htab
,
2221 const char *name
, asection
*s
)
2224 return strncmp (name
, ".rel", 4) == 0 && strcmp (s
->name
, name
+ 4) == 0;
2226 return strncmp (name
, ".rela", 5) == 0 && strcmp (s
->name
, name
+ 5) == 0;
2229 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2230 shortcuts to them in our hash table. */
2233 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2235 struct elf32_arm_link_hash_table
*htab
;
2237 htab
= elf32_arm_hash_table (info
);
2238 /* BPABI objects never have a GOT, or associated sections. */
2239 if (htab
->symbian_p
)
2242 if (! _bfd_elf_create_got_section (dynobj
, info
))
2245 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
2246 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
2247 if (!htab
->sgot
|| !htab
->sgotplt
)
2250 htab
->srelgot
= bfd_make_section_with_flags (dynobj
,
2251 RELOC_SECTION (htab
, ".got"),
2252 (SEC_ALLOC
| SEC_LOAD
2255 | SEC_LINKER_CREATED
2257 if (htab
->srelgot
== NULL
2258 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
2263 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2264 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2268 elf32_arm_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
2270 struct elf32_arm_link_hash_table
*htab
;
2272 htab
= elf32_arm_hash_table (info
);
2273 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
2276 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
2279 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
2280 htab
->srelplt
= bfd_get_section_by_name (dynobj
,
2281 RELOC_SECTION (htab
, ".plt"));
2282 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
2284 htab
->srelbss
= bfd_get_section_by_name (dynobj
,
2285 RELOC_SECTION (htab
, ".bss"));
2287 if (htab
->vxworks_p
)
2289 if (!elf_vxworks_create_dynamic_sections (dynobj
, info
, &htab
->srelplt2
))
2294 htab
->plt_header_size
= 0;
2295 htab
->plt_entry_size
2296 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry
);
2300 htab
->plt_header_size
2301 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry
);
2302 htab
->plt_entry_size
2303 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry
);
2310 || (!info
->shared
&& !htab
->srelbss
))
2316 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2319 elf32_arm_copy_indirect_symbol (struct bfd_link_info
*info
,
2320 struct elf_link_hash_entry
*dir
,
2321 struct elf_link_hash_entry
*ind
)
2323 struct elf32_arm_link_hash_entry
*edir
, *eind
;
2325 edir
= (struct elf32_arm_link_hash_entry
*) dir
;
2326 eind
= (struct elf32_arm_link_hash_entry
*) ind
;
2328 if (eind
->relocs_copied
!= NULL
)
2330 if (edir
->relocs_copied
!= NULL
)
2332 struct elf32_arm_relocs_copied
**pp
;
2333 struct elf32_arm_relocs_copied
*p
;
2335 /* Add reloc counts against the indirect sym to the direct sym
2336 list. Merge any entries against the same section. */
2337 for (pp
= &eind
->relocs_copied
; (p
= *pp
) != NULL
; )
2339 struct elf32_arm_relocs_copied
*q
;
2341 for (q
= edir
->relocs_copied
; q
!= NULL
; q
= q
->next
)
2342 if (q
->section
== p
->section
)
2344 q
->pc_count
+= p
->pc_count
;
2345 q
->count
+= p
->count
;
2352 *pp
= edir
->relocs_copied
;
2355 edir
->relocs_copied
= eind
->relocs_copied
;
2356 eind
->relocs_copied
= NULL
;
2359 if (ind
->root
.type
== bfd_link_hash_indirect
)
2361 /* Copy over PLT info. */
2362 edir
->plt_thumb_refcount
+= eind
->plt_thumb_refcount
;
2363 eind
->plt_thumb_refcount
= 0;
2365 if (dir
->got
.refcount
<= 0)
2367 edir
->tls_type
= eind
->tls_type
;
2368 eind
->tls_type
= GOT_UNKNOWN
;
2372 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2375 /* Create an ARM elf linker hash table. */
2377 static struct bfd_link_hash_table
*
2378 elf32_arm_link_hash_table_create (bfd
*abfd
)
2380 struct elf32_arm_link_hash_table
*ret
;
2381 bfd_size_type amt
= sizeof (struct elf32_arm_link_hash_table
);
2383 ret
= bfd_malloc (amt
);
2387 if (!_bfd_elf_link_hash_table_init (& ret
->root
, abfd
,
2388 elf32_arm_link_hash_newfunc
,
2389 sizeof (struct elf32_arm_link_hash_entry
)))
2396 ret
->sgotplt
= NULL
;
2397 ret
->srelgot
= NULL
;
2399 ret
->srelplt
= NULL
;
2400 ret
->sdynbss
= NULL
;
2401 ret
->srelbss
= NULL
;
2402 ret
->srelplt2
= NULL
;
2403 ret
->thumb_glue_size
= 0;
2404 ret
->arm_glue_size
= 0;
2405 ret
->bfd_of_glue_owner
= NULL
;
2406 ret
->byteswap_code
= 0;
2407 ret
->target1_is_rel
= 0;
2408 ret
->target2_reloc
= R_ARM_NONE
;
2409 #ifdef FOUR_WORD_PLT
2410 ret
->plt_header_size
= 16;
2411 ret
->plt_entry_size
= 16;
2413 ret
->plt_header_size
= 20;
2414 ret
->plt_entry_size
= 12;
2421 ret
->sym_sec
.abfd
= NULL
;
2423 ret
->tls_ldm_got
.refcount
= 0;
2425 return &ret
->root
.root
;
2428 /* Locate the Thumb encoded calling stub for NAME. */
2430 static struct elf_link_hash_entry
*
2431 find_thumb_glue (struct bfd_link_info
*link_info
,
2436 struct elf_link_hash_entry
*hash
;
2437 struct elf32_arm_link_hash_table
*hash_table
;
2439 /* We need a pointer to the armelf specific hash table. */
2440 hash_table
= elf32_arm_hash_table (link_info
);
2442 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2443 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2445 BFD_ASSERT (tmp_name
);
2447 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2449 hash
= elf_link_hash_lookup
2450 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2453 /* xgettext:c-format */
2454 (*_bfd_error_handler
) (_("%B: unable to find THUMB glue '%s' for `%s'"),
2455 input_bfd
, tmp_name
, name
);
2462 /* Locate the ARM encoded calling stub for NAME. */
2464 static struct elf_link_hash_entry
*
2465 find_arm_glue (struct bfd_link_info
*link_info
,
2470 struct elf_link_hash_entry
*myh
;
2471 struct elf32_arm_link_hash_table
*hash_table
;
2473 /* We need a pointer to the elfarm specific hash table. */
2474 hash_table
= elf32_arm_hash_table (link_info
);
2476 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2477 + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2479 BFD_ASSERT (tmp_name
);
2481 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2483 myh
= elf_link_hash_lookup
2484 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2487 /* xgettext:c-format */
2488 (*_bfd_error_handler
) (_("%B: unable to find ARM glue '%s' for `%s'"),
2489 input_bfd
, tmp_name
, name
);
2496 /* ARM->Thumb glue (static images):
2500 ldr r12, __func_addr
2503 .word func @ behave as if you saw a ARM_32 reloc.
2505 (relocatable images)
2508 ldr r12, __func_offset
2515 #define ARM2THUMB_STATIC_GLUE_SIZE 12
2516 static const insn32 a2t1_ldr_insn
= 0xe59fc000;
2517 static const insn32 a2t2_bx_r12_insn
= 0xe12fff1c;
2518 static const insn32 a2t3_func_addr_insn
= 0x00000001;
2520 #define ARM2THUMB_PIC_GLUE_SIZE 16
2521 static const insn32 a2t1p_ldr_insn
= 0xe59fc004;
2522 static const insn32 a2t2p_add_pc_insn
= 0xe08cc00f;
2523 static const insn32 a2t3p_bx_r12_insn
= 0xe12fff1c;
2525 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
2529 __func_from_thumb: __func_from_thumb:
2531 nop ldr r6, __func_addr
2533 __func_change_to_arm: bx r6
2535 __func_back_to_thumb:
2541 #define THUMB2ARM_GLUE_SIZE 8
2542 static const insn16 t2a1_bx_pc_insn
= 0x4778;
2543 static const insn16 t2a2_noop_insn
= 0x46c0;
2544 static const insn32 t2a3_b_insn
= 0xea000000;
2546 #ifndef ELFARM_NABI_C_INCLUDED
2548 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info
* info
)
2552 struct elf32_arm_link_hash_table
* globals
;
2554 globals
= elf32_arm_hash_table (info
);
2556 BFD_ASSERT (globals
!= NULL
);
2558 if (globals
->arm_glue_size
!= 0)
2560 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2562 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
2563 ARM2THUMB_GLUE_SECTION_NAME
);
2565 BFD_ASSERT (s
!= NULL
);
2567 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->arm_glue_size
);
2569 s
->size
= globals
->arm_glue_size
;
2573 if (globals
->thumb_glue_size
!= 0)
2575 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2577 s
= bfd_get_section_by_name
2578 (globals
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2580 BFD_ASSERT (s
!= NULL
);
2582 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->thumb_glue_size
);
2584 s
->size
= globals
->thumb_glue_size
;
2591 /* Allocate space and symbols for calling a Thumb function from Arm mode.
2592 returns the symbol identifying teh stub. */
2593 static struct elf_link_hash_entry
*
2594 record_arm_to_thumb_glue (struct bfd_link_info
* link_info
,
2595 struct elf_link_hash_entry
* h
)
2597 const char * name
= h
->root
.root
.string
;
2600 struct elf_link_hash_entry
* myh
;
2601 struct bfd_link_hash_entry
* bh
;
2602 struct elf32_arm_link_hash_table
* globals
;
2605 globals
= elf32_arm_hash_table (link_info
);
2607 BFD_ASSERT (globals
!= NULL
);
2608 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2610 s
= bfd_get_section_by_name
2611 (globals
->bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
2613 BFD_ASSERT (s
!= NULL
);
2615 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2617 BFD_ASSERT (tmp_name
);
2619 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2621 myh
= elf_link_hash_lookup
2622 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2626 /* We've already seen this guy. */
2631 /* The only trick here is using hash_table->arm_glue_size as the value.
2632 Even though the section isn't allocated yet, this is where we will be
2635 val
= globals
->arm_glue_size
+ 1;
2636 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
2637 tmp_name
, BSF_GLOBAL
, s
, val
,
2638 NULL
, TRUE
, FALSE
, &bh
);
2640 myh
= (struct elf_link_hash_entry
*) bh
;
2641 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2642 myh
->forced_local
= 1;
2646 if ((link_info
->shared
|| globals
->root
.is_relocatable_executable
))
2647 globals
->arm_glue_size
+= ARM2THUMB_PIC_GLUE_SIZE
;
2649 globals
->arm_glue_size
+= ARM2THUMB_STATIC_GLUE_SIZE
;
2655 record_thumb_to_arm_glue (struct bfd_link_info
*link_info
,
2656 struct elf_link_hash_entry
*h
)
2658 const char *name
= h
->root
.root
.string
;
2661 struct elf_link_hash_entry
*myh
;
2662 struct bfd_link_hash_entry
*bh
;
2663 struct elf32_arm_link_hash_table
*hash_table
;
2666 hash_table
= elf32_arm_hash_table (link_info
);
2668 BFD_ASSERT (hash_table
!= NULL
);
2669 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
2671 s
= bfd_get_section_by_name
2672 (hash_table
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2674 BFD_ASSERT (s
!= NULL
);
2676 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2677 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2679 BFD_ASSERT (tmp_name
);
2681 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2683 myh
= elf_link_hash_lookup
2684 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2688 /* We've already seen this guy. */
2694 val
= hash_table
->thumb_glue_size
+ 1;
2695 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2696 tmp_name
, BSF_GLOBAL
, s
, val
,
2697 NULL
, TRUE
, FALSE
, &bh
);
2699 /* If we mark it 'Thumb', the disassembler will do a better job. */
2700 myh
= (struct elf_link_hash_entry
*) bh
;
2701 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
2702 myh
->forced_local
= 1;
2706 #define CHANGE_TO_ARM "__%s_change_to_arm"
2707 #define BACK_FROM_ARM "__%s_back_from_arm"
2709 /* Allocate another symbol to mark where we switch to Arm mode. */
2710 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2711 + strlen (CHANGE_TO_ARM
) + 1);
2713 BFD_ASSERT (tmp_name
);
2715 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
2718 val
= hash_table
->thumb_glue_size
+ 4,
2719 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2720 tmp_name
, BSF_LOCAL
, s
, val
,
2721 NULL
, TRUE
, FALSE
, &bh
);
2725 hash_table
->thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
2730 /* Add the glue sections to ABFD. This function is called from the
2731 linker scripts in ld/emultempl/{armelf}.em. */
2734 bfd_elf32_arm_add_glue_sections_to_bfd (bfd
*abfd
,
2735 struct bfd_link_info
*info
)
2740 /* If we are only performing a partial
2741 link do not bother adding the glue. */
2742 if (info
->relocatable
)
2745 sec
= bfd_get_section_by_name (abfd
, ARM2THUMB_GLUE_SECTION_NAME
);
2749 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
2750 will prevent elf_link_input_bfd() from processing the contents
2752 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_CODE
| SEC_READONLY
;
2754 sec
= bfd_make_section_with_flags (abfd
,
2755 ARM2THUMB_GLUE_SECTION_NAME
,
2759 || !bfd_set_section_alignment (abfd
, sec
, 2))
2762 /* Set the gc mark to prevent the section from being removed by garbage
2763 collection, despite the fact that no relocs refer to this section. */
2767 sec
= bfd_get_section_by_name (abfd
, THUMB2ARM_GLUE_SECTION_NAME
);
2771 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2772 | SEC_CODE
| SEC_READONLY
;
2774 sec
= bfd_make_section_with_flags (abfd
,
2775 THUMB2ARM_GLUE_SECTION_NAME
,
2779 || !bfd_set_section_alignment (abfd
, sec
, 2))
2788 /* Select a BFD to be used to hold the sections used by the glue code.
2789 This function is called from the linker scripts in ld/emultempl/
2793 bfd_elf32_arm_get_bfd_for_interworking (bfd
*abfd
, struct bfd_link_info
*info
)
2795 struct elf32_arm_link_hash_table
*globals
;
2797 /* If we are only performing a partial link
2798 do not bother getting a bfd to hold the glue. */
2799 if (info
->relocatable
)
2802 /* Make sure we don't attach the glue sections to a dynamic object. */
2803 BFD_ASSERT (!(abfd
->flags
& DYNAMIC
));
2805 globals
= elf32_arm_hash_table (info
);
2807 BFD_ASSERT (globals
!= NULL
);
2809 if (globals
->bfd_of_glue_owner
!= NULL
)
2812 /* Save the bfd for later use. */
2813 globals
->bfd_of_glue_owner
= abfd
;
2818 static void check_use_blx(struct elf32_arm_link_hash_table
*globals
)
2820 if (elf32_arm_get_eabi_attr_int (globals
->obfd
, Tag_CPU_arch
) > 2)
2821 globals
->use_blx
= 1;
2825 bfd_elf32_arm_process_before_allocation (bfd
*abfd
,
2826 struct bfd_link_info
*link_info
,
2829 Elf_Internal_Shdr
*symtab_hdr
;
2830 Elf_Internal_Rela
*internal_relocs
= NULL
;
2831 Elf_Internal_Rela
*irel
, *irelend
;
2832 bfd_byte
*contents
= NULL
;
2835 struct elf32_arm_link_hash_table
*globals
;
2837 /* If we are only performing a partial link do not bother
2838 to construct any glue. */
2839 if (link_info
->relocatable
)
2842 /* Here we have a bfd that is to be included on the link. We have a hook
2843 to do reloc rummaging, before section sizes are nailed down. */
2844 globals
= elf32_arm_hash_table (link_info
);
2845 check_use_blx (globals
);
2847 BFD_ASSERT (globals
!= NULL
);
2848 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2850 if (byteswap_code
&& !bfd_big_endian (abfd
))
2852 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
2856 globals
->byteswap_code
= byteswap_code
;
2858 /* Rummage around all the relocs and map the glue vectors. */
2859 sec
= abfd
->sections
;
2864 for (; sec
!= NULL
; sec
= sec
->next
)
2866 if (sec
->reloc_count
== 0)
2869 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2871 /* Load the relocs. */
2873 = _bfd_elf_link_read_relocs (abfd
, sec
, (void *) NULL
,
2874 (Elf_Internal_Rela
*) NULL
, FALSE
);
2876 if (internal_relocs
== NULL
)
2879 irelend
= internal_relocs
+ sec
->reloc_count
;
2880 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
2883 unsigned long r_index
;
2885 struct elf_link_hash_entry
*h
;
2887 r_type
= ELF32_R_TYPE (irel
->r_info
);
2888 r_index
= ELF32_R_SYM (irel
->r_info
);
2890 /* These are the only relocation types we care about. */
2891 if ( r_type
!= R_ARM_PC24
2892 && r_type
!= R_ARM_PLT32
2893 && r_type
!= R_ARM_CALL
2894 && r_type
!= R_ARM_JUMP24
2895 && r_type
!= R_ARM_THM_CALL
)
2898 /* Get the section contents if we haven't done so already. */
2899 if (contents
== NULL
)
2901 /* Get cached copy if it exists. */
2902 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
2903 contents
= elf_section_data (sec
)->this_hdr
.contents
;
2906 /* Go get them off disk. */
2907 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
2912 /* If the relocation is not against a symbol it cannot concern us. */
2915 /* We don't care about local symbols. */
2916 if (r_index
< symtab_hdr
->sh_info
)
2919 /* This is an external symbol. */
2920 r_index
-= symtab_hdr
->sh_info
;
2921 h
= (struct elf_link_hash_entry
*)
2922 elf_sym_hashes (abfd
)[r_index
];
2924 /* If the relocation is against a static symbol it must be within
2925 the current section and so cannot be a cross ARM/Thumb relocation. */
2929 /* If the call will go through a PLT entry then we do not need
2931 if (globals
->splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
2940 /* This one is a call from arm code. We need to look up
2941 the target of the call. If it is a thumb target, we
2943 if (ELF_ST_TYPE(h
->type
) == STT_ARM_TFUNC
2944 && !(r_type
== R_ARM_CALL
&& globals
->use_blx
))
2945 record_arm_to_thumb_glue (link_info
, h
);
2948 case R_ARM_THM_CALL
:
2949 /* This one is a call from thumb code. We look
2950 up the target of the call. If it is not a thumb
2951 target, we insert glue. */
2952 if (ELF_ST_TYPE (h
->type
) != STT_ARM_TFUNC
&& !globals
->use_blx
)
2953 record_thumb_to_arm_glue (link_info
, h
);
2961 if (contents
!= NULL
2962 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
2966 if (internal_relocs
!= NULL
2967 && elf_section_data (sec
)->relocs
!= internal_relocs
)
2968 free (internal_relocs
);
2969 internal_relocs
= NULL
;
2975 if (contents
!= NULL
2976 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
2978 if (internal_relocs
!= NULL
2979 && elf_section_data (sec
)->relocs
!= internal_relocs
)
2980 free (internal_relocs
);
2987 /* Set target relocation values needed during linking. */
2990 bfd_elf32_arm_set_target_relocs (struct bfd_link_info
*link_info
,
2992 char * target2_type
,
2996 struct elf32_arm_link_hash_table
*globals
;
2998 globals
= elf32_arm_hash_table (link_info
);
3000 globals
->target1_is_rel
= target1_is_rel
;
3001 if (strcmp (target2_type
, "rel") == 0)
3002 globals
->target2_reloc
= R_ARM_REL32
;
3003 else if (strcmp (target2_type
, "abs") == 0)
3004 globals
->target2_reloc
= R_ARM_ABS32
;
3005 else if (strcmp (target2_type
, "got-rel") == 0)
3006 globals
->target2_reloc
= R_ARM_GOT_PREL
;
3009 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
3012 globals
->fix_v4bx
= fix_v4bx
;
3013 globals
->use_blx
|= use_blx
;
3016 /* The thumb form of a long branch is a bit finicky, because the offset
3017 encoding is split over two fields, each in it's own instruction. They
3018 can occur in any order. So given a thumb form of long branch, and an
3019 offset, insert the offset into the thumb branch and return finished
3022 It takes two thumb instructions to encode the target address. Each has
3023 11 bits to invest. The upper 11 bits are stored in one (identified by
3024 H-0.. see below), the lower 11 bits are stored in the other (identified
3027 Combine together and shifted left by 1 (it's a half word address) and
3031 H-0, upper address-0 = 000
3033 H-1, lower address-0 = 800
3035 They can be ordered either way, but the arm tools I've seen always put
3036 the lower one first. It probably doesn't matter. krk@cygnus.com
3038 XXX: Actually the order does matter. The second instruction (H-1)
3039 moves the computed address into the PC, so it must be the second one
3040 in the sequence. The problem, however is that whilst little endian code
3041 stores the instructions in HI then LOW order, big endian code does the
3042 reverse. nickc@cygnus.com. */
3044 #define LOW_HI_ORDER 0xF800F000
3045 #define HI_LOW_ORDER 0xF000F800
3048 insert_thumb_branch (insn32 br_insn
, int rel_off
)
3050 unsigned int low_bits
;
3051 unsigned int high_bits
;
3053 BFD_ASSERT ((rel_off
& 1) != 1);
3055 rel_off
>>= 1; /* Half word aligned address. */
3056 low_bits
= rel_off
& 0x000007FF; /* The bottom 11 bits. */
3057 high_bits
= (rel_off
>> 11) & 0x000007FF; /* The top 11 bits. */
3059 if ((br_insn
& LOW_HI_ORDER
) == LOW_HI_ORDER
)
3060 br_insn
= LOW_HI_ORDER
| (low_bits
<< 16) | high_bits
;
3061 else if ((br_insn
& HI_LOW_ORDER
) == HI_LOW_ORDER
)
3062 br_insn
= HI_LOW_ORDER
| (high_bits
<< 16) | low_bits
;
3064 /* FIXME: abort is probably not the right call. krk@cygnus.com */
3065 abort (); /* Error - not a valid branch instruction form. */
3071 /* Store an Arm insn into an output section not processed by
3072 elf32_arm_write_section. */
3075 put_arm_insn (struct elf32_arm_link_hash_table
*htab
,
3076 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3078 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3079 bfd_putl32 (val
, ptr
);
3081 bfd_putb32 (val
, ptr
);
3085 /* Store a 16-bit Thumb insn into an output section not processed by
3086 elf32_arm_write_section. */
3089 put_thumb_insn (struct elf32_arm_link_hash_table
*htab
,
3090 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3092 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3093 bfd_putl16 (val
, ptr
);
3095 bfd_putb16 (val
, ptr
);
3099 /* Thumb code calling an ARM function. */
3102 elf32_thumb_to_arm_stub (struct bfd_link_info
* info
,
3106 asection
* input_section
,
3107 bfd_byte
* hit_data
,
3110 bfd_signed_vma addend
,
3115 unsigned long int tmp
;
3116 long int ret_offset
;
3117 struct elf_link_hash_entry
* myh
;
3118 struct elf32_arm_link_hash_table
* globals
;
3120 myh
= find_thumb_glue (info
, name
, input_bfd
);
3124 globals
= elf32_arm_hash_table (info
);
3126 BFD_ASSERT (globals
!= NULL
);
3127 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3129 my_offset
= myh
->root
.u
.def
.value
;
3131 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
3132 THUMB2ARM_GLUE_SECTION_NAME
);
3134 BFD_ASSERT (s
!= NULL
);
3135 BFD_ASSERT (s
->contents
!= NULL
);
3136 BFD_ASSERT (s
->output_section
!= NULL
);
3138 if ((my_offset
& 0x01) == 0x01)
3141 && sym_sec
->owner
!= NULL
3142 && !INTERWORK_FLAG (sym_sec
->owner
))
3144 (*_bfd_error_handler
)
3145 (_("%B(%s): warning: interworking not enabled.\n"
3146 " first occurrence: %B: thumb call to arm"),
3147 sym_sec
->owner
, input_bfd
, name
);
3153 myh
->root
.u
.def
.value
= my_offset
;
3155 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a1_bx_pc_insn
,
3156 s
->contents
+ my_offset
);
3158 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a2_noop_insn
,
3159 s
->contents
+ my_offset
+ 2);
3162 /* Address of destination of the stub. */
3163 ((bfd_signed_vma
) val
)
3165 /* Offset from the start of the current section
3166 to the start of the stubs. */
3168 /* Offset of the start of this stub from the start of the stubs. */
3170 /* Address of the start of the current section. */
3171 + s
->output_section
->vma
)
3172 /* The branch instruction is 4 bytes into the stub. */
3174 /* ARM branches work from the pc of the instruction + 8. */
3177 put_arm_insn (globals
, output_bfd
,
3178 (bfd_vma
) t2a3_b_insn
| ((ret_offset
>> 2) & 0x00FFFFFF),
3179 s
->contents
+ my_offset
+ 4);
3182 BFD_ASSERT (my_offset
<= globals
->thumb_glue_size
);
3184 /* Now go back and fix up the original BL insn to point to here. */
3186 /* Address of where the stub is located. */
3187 (s
->output_section
->vma
+ s
->output_offset
+ my_offset
)
3188 /* Address of where the BL is located. */
3189 - (input_section
->output_section
->vma
+ input_section
->output_offset
3191 /* Addend in the relocation. */
3193 /* Biassing for PC-relative addressing. */
3196 tmp
= bfd_get_32 (input_bfd
, hit_data
3197 - input_section
->vma
);
3199 bfd_put_32 (output_bfd
,
3200 (bfd_vma
) insert_thumb_branch (tmp
, ret_offset
),
3201 hit_data
- input_section
->vma
);
3206 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
3208 static struct elf_link_hash_entry
*
3209 elf32_arm_create_thumb_stub (struct bfd_link_info
* info
,
3218 long int ret_offset
;
3219 struct elf_link_hash_entry
* myh
;
3220 struct elf32_arm_link_hash_table
* globals
;
3222 myh
= find_arm_glue (info
, name
, input_bfd
);
3226 globals
= elf32_arm_hash_table (info
);
3228 BFD_ASSERT (globals
!= NULL
);
3229 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3231 my_offset
= myh
->root
.u
.def
.value
;
3233 if ((my_offset
& 0x01) == 0x01)
3236 && sym_sec
->owner
!= NULL
3237 && !INTERWORK_FLAG (sym_sec
->owner
))
3239 (*_bfd_error_handler
)
3240 (_("%B(%s): warning: interworking not enabled.\n"
3241 " first occurrence: %B: arm call to thumb"),
3242 sym_sec
->owner
, input_bfd
, name
);
3246 myh
->root
.u
.def
.value
= my_offset
;
3248 if ((info
->shared
|| globals
->root
.is_relocatable_executable
))
3250 /* For relocatable objects we can't use absolute addresses,
3251 so construct the address from a relative offset. */
3252 /* TODO: If the offset is small it's probably worth
3253 constructing the address with adds. */
3254 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1p_ldr_insn
,
3255 s
->contents
+ my_offset
);
3256 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2p_add_pc_insn
,
3257 s
->contents
+ my_offset
+ 4);
3258 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t3p_bx_r12_insn
,
3259 s
->contents
+ my_offset
+ 8);
3260 /* Adjust the offset by 4 for the position of the add,
3261 and 8 for the pipeline offset. */
3262 ret_offset
= (val
- (s
->output_offset
3263 + s
->output_section
->vma
3266 bfd_put_32 (output_bfd
, ret_offset
,
3267 s
->contents
+ my_offset
+ 12);
3271 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1_ldr_insn
,
3272 s
->contents
+ my_offset
);
3274 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2_bx_r12_insn
,
3275 s
->contents
+ my_offset
+ 4);
3277 /* It's a thumb address. Add the low order bit. */
3278 bfd_put_32 (output_bfd
, val
| a2t3_func_addr_insn
,
3279 s
->contents
+ my_offset
+ 8);
3283 BFD_ASSERT (my_offset
<= globals
->arm_glue_size
);
3288 /* Arm code calling a Thumb function. */
3291 elf32_arm_to_thumb_stub (struct bfd_link_info
* info
,
3295 asection
* input_section
,
3296 bfd_byte
* hit_data
,
3299 bfd_signed_vma addend
,
3302 unsigned long int tmp
;
3305 long int ret_offset
;
3306 struct elf_link_hash_entry
* myh
;
3307 struct elf32_arm_link_hash_table
* globals
;
3309 globals
= elf32_arm_hash_table (info
);
3311 BFD_ASSERT (globals
!= NULL
);
3312 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3314 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
3315 ARM2THUMB_GLUE_SECTION_NAME
);
3316 BFD_ASSERT (s
!= NULL
);
3317 BFD_ASSERT (s
->contents
!= NULL
);
3318 BFD_ASSERT (s
->output_section
!= NULL
);
3320 myh
= elf32_arm_create_thumb_stub (info
, name
, input_bfd
, output_bfd
,
3325 my_offset
= myh
->root
.u
.def
.value
;
3326 tmp
= bfd_get_32 (input_bfd
, hit_data
);
3327 tmp
= tmp
& 0xFF000000;
3329 /* Somehow these are both 4 too far, so subtract 8. */
3330 ret_offset
= (s
->output_offset
3332 + s
->output_section
->vma
3333 - (input_section
->output_offset
3334 + input_section
->output_section
->vma
3338 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
3340 bfd_put_32 (output_bfd
, (bfd_vma
) tmp
, hit_data
- input_section
->vma
);
3345 /* Populate Arm stub for an exported Thumb function. */
3348 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry
*h
, void * inf
)
3350 struct bfd_link_info
* info
= (struct bfd_link_info
*) inf
;
3352 struct elf_link_hash_entry
* myh
;
3353 struct elf32_arm_link_hash_entry
*eh
;
3354 struct elf32_arm_link_hash_table
* globals
;
3358 eh
= elf32_arm_hash_entry(h
);
3359 /* Allocate stubs for exported Thumb functions on v4t. */
3360 if (eh
->export_glue
== NULL
)
3363 globals
= elf32_arm_hash_table (info
);
3365 BFD_ASSERT (globals
!= NULL
);
3366 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3368 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
3369 ARM2THUMB_GLUE_SECTION_NAME
);
3370 BFD_ASSERT (s
!= NULL
);
3371 BFD_ASSERT (s
->contents
!= NULL
);
3372 BFD_ASSERT (s
->output_section
!= NULL
);
3374 sec
= eh
->export_glue
->root
.u
.def
.section
;
3375 val
= eh
->export_glue
->root
.u
.def
.value
+ sec
->output_offset
3376 + sec
->output_section
->vma
;
3377 myh
= elf32_arm_create_thumb_stub (info
, h
->root
.root
.string
,
3378 h
->root
.u
.def
.section
->owner
,
3379 globals
->obfd
, sec
, val
, s
);
3384 /* Generate Arm stubs for exported Thumb symbols. */
3386 elf32_arm_begin_write_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
3387 struct bfd_link_info
*link_info
)
3389 struct elf32_arm_link_hash_table
* globals
;
3394 globals
= elf32_arm_hash_table (link_info
);
3395 /* If blx is available then exported Thumb symbols are OK and there is
3397 if (globals
->use_blx
)
3400 elf_link_hash_traverse (&globals
->root
, elf32_arm_to_thumb_export_stub
,
3404 /* Some relocations map to different relocations depending on the
3405 target. Return the real relocation. */
3407 arm_real_reloc_type (struct elf32_arm_link_hash_table
* globals
,
3413 if (globals
->target1_is_rel
)
3419 return globals
->target2_reloc
;
3426 /* Return the base VMA address which should be subtracted from real addresses
3427 when resolving @dtpoff relocation.
3428 This is PT_TLS segment p_vaddr. */
3431 dtpoff_base (struct bfd_link_info
*info
)
3433 /* If tls_sec is NULL, we should have signalled an error already. */
3434 if (elf_hash_table (info
)->tls_sec
== NULL
)
3436 return elf_hash_table (info
)->tls_sec
->vma
;
3439 /* Return the relocation value for @tpoff relocation
3440 if STT_TLS virtual address is ADDRESS. */
3443 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
3445 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
3448 /* If tls_sec is NULL, we should have signalled an error already. */
3449 if (htab
->tls_sec
== NULL
)
3451 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
3452 return address
- htab
->tls_sec
->vma
+ base
;
3455 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
3456 VALUE is the relocation value. */
3458 static bfd_reloc_status_type
3459 elf32_arm_abs12_reloc (bfd
*abfd
, void *data
, bfd_vma value
)
3462 return bfd_reloc_overflow
;
3464 value
|= bfd_get_32 (abfd
, data
) & 0xfffff000;
3465 bfd_put_32 (abfd
, value
, data
);
3466 return bfd_reloc_ok
;
3469 /* For a given value of n, calculate the value of G_n as required to
3470 deal with group relocations. We return it in the form of an
3471 encoded constant-and-rotation, together with the final residual. If n is
3472 specified as less than zero, then final_residual is filled with the
3473 input value and no further action is performed. */
3476 calculate_group_reloc_mask (bfd_vma value
, int n
, bfd_vma
*final_residual
)
3480 bfd_vma encoded_g_n
= 0;
3481 bfd_vma residual
= value
; /* Also known as Y_n. */
3483 for (current_n
= 0; current_n
<= n
; current_n
++)
3487 /* Calculate which part of the value to mask. */
3494 /* Determine the most significant bit in the residual and
3495 align the resulting value to a 2-bit boundary. */
3496 for (msb
= 30; msb
>= 0; msb
-= 2)
3497 if (residual
& (3 << msb
))
3500 /* The desired shift is now (msb - 6), or zero, whichever
3507 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
3508 g_n
= residual
& (0xff << shift
);
3509 encoded_g_n
= (g_n
>> shift
)
3510 | ((g_n
<= 0xff ? 0 : (32 - shift
) / 2) << 8);
3512 /* Calculate the residual for the next time around. */
3516 *final_residual
= residual
;
3521 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
3522 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
3524 identify_add_or_sub(bfd_vma insn
)
3526 int opcode
= insn
& 0x1e00000;
3528 if (opcode
== 1 << 23) /* ADD */
3531 if (opcode
== 1 << 22) /* SUB */
3537 /* Perform a relocation as part of a final link. */
3539 static bfd_reloc_status_type
3540 elf32_arm_final_link_relocate (reloc_howto_type
* howto
,
3543 asection
* input_section
,
3544 bfd_byte
* contents
,
3545 Elf_Internal_Rela
* rel
,
3547 struct bfd_link_info
* info
,
3549 const char * sym_name
,
3551 struct elf_link_hash_entry
* h
,
3552 bfd_boolean
* unresolved_reloc_p
)
3554 unsigned long r_type
= howto
->type
;
3555 unsigned long r_symndx
;
3556 bfd_byte
* hit_data
= contents
+ rel
->r_offset
;
3557 bfd
* dynobj
= NULL
;
3558 Elf_Internal_Shdr
* symtab_hdr
;
3559 struct elf_link_hash_entry
** sym_hashes
;
3560 bfd_vma
* local_got_offsets
;
3561 asection
* sgot
= NULL
;
3562 asection
* splt
= NULL
;
3563 asection
* sreloc
= NULL
;
3565 bfd_signed_vma signed_addend
;
3566 struct elf32_arm_link_hash_table
* globals
;
3568 globals
= elf32_arm_hash_table (info
);
3570 /* Some relocation type map to different relocations depending on the
3571 target. We pick the right one here. */
3572 r_type
= arm_real_reloc_type (globals
, r_type
);
3573 if (r_type
!= howto
->type
)
3574 howto
= elf32_arm_howto_from_type (r_type
);
3576 /* If the start address has been set, then set the EF_ARM_HASENTRY
3577 flag. Setting this more than once is redundant, but the cost is
3578 not too high, and it keeps the code simple.
3580 The test is done here, rather than somewhere else, because the
3581 start address is only set just before the final link commences.
3583 Note - if the user deliberately sets a start address of 0, the
3584 flag will not be set. */
3585 if (bfd_get_start_address (output_bfd
) != 0)
3586 elf_elfheader (output_bfd
)->e_flags
|= EF_ARM_HASENTRY
;
3588 dynobj
= elf_hash_table (info
)->dynobj
;
3591 sgot
= bfd_get_section_by_name (dynobj
, ".got");
3592 splt
= bfd_get_section_by_name (dynobj
, ".plt");
3594 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
3595 sym_hashes
= elf_sym_hashes (input_bfd
);
3596 local_got_offsets
= elf_local_got_offsets (input_bfd
);
3597 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3599 if (globals
->use_rel
)
3601 addend
= bfd_get_32 (input_bfd
, hit_data
) & howto
->src_mask
;
3603 if (addend
& ((howto
->src_mask
+ 1) >> 1))
3606 signed_addend
&= ~ howto
->src_mask
;
3607 signed_addend
|= addend
;
3610 signed_addend
= addend
;
3613 addend
= signed_addend
= rel
->r_addend
;
3618 /* We don't need to find a value for this symbol. It's just a
3620 *unresolved_reloc_p
= FALSE
;
3621 return bfd_reloc_ok
;
3624 if (!globals
->vxworks_p
)
3625 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
3635 /* r_symndx will be zero only for relocs against symbols
3636 from removed linkonce sections, or sections discarded by
3639 return bfd_reloc_ok
;
3641 /* Handle relocations which should use the PLT entry. ABS32/REL32
3642 will use the symbol's value, which may point to a PLT entry, but we
3643 don't need to handle that here. If we created a PLT entry, all
3644 branches in this object should go to it. */
3645 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
)
3648 && h
->plt
.offset
!= (bfd_vma
) -1)
3650 /* If we've created a .plt section, and assigned a PLT entry to
3651 this function, it should not be known to bind locally. If
3652 it were, we would have cleared the PLT entry. */
3653 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
3655 value
= (splt
->output_section
->vma
3656 + splt
->output_offset
3658 *unresolved_reloc_p
= FALSE
;
3659 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3660 contents
, rel
->r_offset
, value
,
3664 /* When generating a shared object or relocatable executable, these
3665 relocations are copied into the output file to be resolved at
3667 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
3668 && (input_section
->flags
& SEC_ALLOC
)
3669 && (r_type
!= R_ARM_REL32
3670 || !SYMBOL_CALLS_LOCAL (info
, h
))
3672 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
3673 || h
->root
.type
!= bfd_link_hash_undefweak
)
3674 && r_type
!= R_ARM_PC24
3675 && r_type
!= R_ARM_CALL
3676 && r_type
!= R_ARM_JUMP24
3677 && r_type
!= R_ARM_PREL31
3678 && r_type
!= R_ARM_PLT32
)
3680 Elf_Internal_Rela outrel
;
3682 bfd_boolean skip
, relocate
;
3684 *unresolved_reloc_p
= FALSE
;
3690 name
= (bfd_elf_string_from_elf_section
3692 elf_elfheader (input_bfd
)->e_shstrndx
,
3693 elf_section_data (input_section
)->rel_hdr
.sh_name
));
3695 return bfd_reloc_notsupported
;
3697 BFD_ASSERT (reloc_section_p (globals
, name
, input_section
));
3699 sreloc
= bfd_get_section_by_name (dynobj
, name
);
3700 BFD_ASSERT (sreloc
!= NULL
);
3706 outrel
.r_addend
= addend
;
3708 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3710 if (outrel
.r_offset
== (bfd_vma
) -1)
3712 else if (outrel
.r_offset
== (bfd_vma
) -2)
3713 skip
= TRUE
, relocate
= TRUE
;
3714 outrel
.r_offset
+= (input_section
->output_section
->vma
3715 + input_section
->output_offset
);
3718 memset (&outrel
, 0, sizeof outrel
);
3723 || !h
->def_regular
))
3724 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
3729 /* This symbol is local, or marked to become local. */
3730 if (sym_flags
== STT_ARM_TFUNC
)
3732 if (globals
->symbian_p
)
3734 /* On Symbian OS, the data segment and text segement
3735 can be relocated independently. Therefore, we
3736 must indicate the segment to which this
3737 relocation is relative. The BPABI allows us to
3738 use any symbol in the right segment; we just use
3739 the section symbol as it is convenient. (We
3740 cannot use the symbol given by "h" directly as it
3741 will not appear in the dynamic symbol table.) */
3743 symbol
= elf_section_data (sym_sec
->output_section
)->dynindx
;
3745 symbol
= elf_section_data (input_section
->output_section
)->dynindx
;
3746 BFD_ASSERT (symbol
!= 0);
3749 /* On SVR4-ish systems, the dynamic loader cannot
3750 relocate the text and data segments independently,
3751 so the symbol does not matter. */
3753 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
3754 if (globals
->use_rel
)
3757 outrel
.r_addend
+= value
;
3760 loc
= sreloc
->contents
;
3761 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
3762 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
3764 /* If this reloc is against an external symbol, we do not want to
3765 fiddle with the addend. Otherwise, we need to include the symbol
3766 value so that it becomes an addend for the dynamic reloc. */
3768 return bfd_reloc_ok
;
3770 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3771 contents
, rel
->r_offset
, value
,
3774 else switch (r_type
)
3777 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
3779 case R_ARM_XPC25
: /* Arm BLX instruction. */
3782 case R_ARM_PC24
: /* Arm B/BL instruction */
3784 if (r_type
== R_ARM_XPC25
)
3786 /* Check for Arm calling Arm function. */
3787 /* FIXME: Should we translate the instruction into a BL
3788 instruction instead ? */
3789 if (sym_flags
!= STT_ARM_TFUNC
)
3790 (*_bfd_error_handler
)
3791 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
3793 h
? h
->root
.root
.string
: "(local)");
3795 else if (r_type
!= R_ARM_CALL
|| !globals
->use_blx
)
3797 /* Check for Arm calling Thumb function. */
3798 if (sym_flags
== STT_ARM_TFUNC
)
3800 elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
3801 output_bfd
, input_section
,
3802 hit_data
, sym_sec
, rel
->r_offset
,
3803 signed_addend
, value
);
3804 return bfd_reloc_ok
;
3808 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
3810 S is the address of the symbol in the relocation.
3811 P is address of the instruction being relocated.
3812 A is the addend (extracted from the instruction) in bytes.
3814 S is held in 'value'.
3815 P is the base address of the section containing the
3816 instruction plus the offset of the reloc into that
3818 (input_section->output_section->vma +
3819 input_section->output_offset +
3821 A is the addend, converted into bytes, ie:
3824 Note: None of these operations have knowledge of the pipeline
3825 size of the processor, thus it is up to the assembler to
3826 encode this information into the addend. */
3827 value
-= (input_section
->output_section
->vma
3828 + input_section
->output_offset
);
3829 value
-= rel
->r_offset
;
3830 if (globals
->use_rel
)
3831 value
+= (signed_addend
<< howto
->size
);
3833 /* RELA addends do not have to be adjusted by howto->size. */
3834 value
+= signed_addend
;
3836 signed_addend
= value
;
3837 signed_addend
>>= howto
->rightshift
;
3839 /* It is not an error for an undefined weak reference to be
3840 out of range. Any program that branches to such a symbol
3841 is going to crash anyway, so there is no point worrying
3842 about getting the destination exactly right. */
3843 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3845 /* Perform a signed range check. */
3846 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
3847 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
3848 return bfd_reloc_overflow
;
3851 addend
= (value
& 2);
3853 value
= (signed_addend
& howto
->dst_mask
)
3854 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
3856 /* Set the H bit in the BLX instruction. */
3857 if (sym_flags
== STT_ARM_TFUNC
)
3862 value
&= ~(bfd_vma
)(1 << 24);
3864 if (r_type
== R_ARM_CALL
)
3866 /* Select the correct instruction (BL or BLX). */
3867 if (sym_flags
== STT_ARM_TFUNC
)
3871 value
&= ~(bfd_vma
)(1 << 28);
3879 if (sym_flags
== STT_ARM_TFUNC
)
3885 if (sym_flags
== STT_ARM_TFUNC
)
3887 value
-= (input_section
->output_section
->vma
3888 + input_section
->output_offset
+ rel
->r_offset
);
3892 value
-= (input_section
->output_section
->vma
3893 + input_section
->output_offset
+ rel
->r_offset
);
3894 value
+= signed_addend
;
3895 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3897 /* Check for overflow */
3898 if ((value
^ (value
>> 1)) & (1 << 30))
3899 return bfd_reloc_overflow
;
3901 value
&= 0x7fffffff;
3902 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
3903 if (sym_flags
== STT_ARM_TFUNC
)
3908 bfd_put_32 (input_bfd
, value
, hit_data
);
3909 return bfd_reloc_ok
;
3913 if ((long) value
> 0x7f || (long) value
< -0x80)
3914 return bfd_reloc_overflow
;
3916 bfd_put_8 (input_bfd
, value
, hit_data
);
3917 return bfd_reloc_ok
;
3922 if ((long) value
> 0x7fff || (long) value
< -0x8000)
3923 return bfd_reloc_overflow
;
3925 bfd_put_16 (input_bfd
, value
, hit_data
);
3926 return bfd_reloc_ok
;
3928 case R_ARM_THM_ABS5
:
3929 /* Support ldr and str instructions for the thumb. */
3930 if (globals
->use_rel
)
3932 /* Need to refetch addend. */
3933 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
3934 /* ??? Need to determine shift amount from operand size. */
3935 addend
>>= howto
->rightshift
;
3939 /* ??? Isn't value unsigned? */
3940 if ((long) value
> 0x1f || (long) value
< -0x10)
3941 return bfd_reloc_overflow
;
3943 /* ??? Value needs to be properly shifted into place first. */
3944 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
3945 bfd_put_16 (input_bfd
, value
, hit_data
);
3946 return bfd_reloc_ok
;
3948 case R_ARM_THM_XPC22
:
3949 case R_ARM_THM_CALL
:
3950 /* Thumb BL (branch long instruction). */
3953 bfd_boolean overflow
= FALSE
;
3954 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
3955 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
3956 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
3957 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
3959 bfd_signed_vma signed_check
;
3961 /* Need to refetch the addend and squish the two 11 bit pieces
3963 if (globals
->use_rel
)
3965 bfd_vma upper
= upper_insn
& 0x7ff;
3966 bfd_vma lower
= lower_insn
& 0x7ff;
3967 upper
= (upper
^ 0x400) - 0x400; /* Sign extend. */
3968 addend
= (upper
<< 12) | (lower
<< 1);
3969 signed_addend
= addend
;
3972 if (r_type
== R_ARM_THM_XPC22
)
3974 /* Check for Thumb to Thumb call. */
3975 /* FIXME: Should we translate the instruction into a BL
3976 instruction instead ? */
3977 if (sym_flags
== STT_ARM_TFUNC
)
3978 (*_bfd_error_handler
)
3979 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
3981 h
? h
->root
.root
.string
: "(local)");
3985 /* If it is not a call to Thumb, assume call to Arm.
3986 If it is a call relative to a section name, then it is not a
3987 function call at all, but rather a long jump. Calls through
3988 the PLT do not require stubs. */
3989 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
3990 && (h
== NULL
|| splt
== NULL
3991 || h
->plt
.offset
== (bfd_vma
) -1))
3993 if (globals
->use_blx
)
3995 /* Convert BL to BLX. */
3996 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
3998 else if (elf32_thumb_to_arm_stub
3999 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
4000 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
))
4001 return bfd_reloc_ok
;
4003 return bfd_reloc_dangerous
;
4005 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
)
4007 /* Make sure this is a BL. */
4008 lower_insn
|= 0x1800;
4012 /* Handle calls via the PLT. */
4013 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
4015 value
= (splt
->output_section
->vma
4016 + splt
->output_offset
4018 if (globals
->use_blx
)
4020 /* If the Thumb BLX instruction is available, convert the
4021 BL to a BLX instruction to call the ARM-mode PLT entry. */
4022 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
4025 /* Target the Thumb stub before the ARM PLT entry. */
4026 value
-= PLT_THUMB_STUB_SIZE
;
4027 *unresolved_reloc_p
= FALSE
;
4030 relocation
= value
+ signed_addend
;
4032 relocation
-= (input_section
->output_section
->vma
4033 + input_section
->output_offset
4036 check
= relocation
>> howto
->rightshift
;
4038 /* If this is a signed value, the rightshift just dropped
4039 leading 1 bits (assuming twos complement). */
4040 if ((bfd_signed_vma
) relocation
>= 0)
4041 signed_check
= check
;
4043 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
4045 /* Assumes two's complement. */
4046 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4049 if ((lower_insn
& 0x1800) == 0x0800)
4050 /* For a BLX instruction, make sure that the relocation is rounded up
4051 to a word boundary. This follows the semantics of the instruction
4052 which specifies that bit 1 of the target address will come from bit
4053 1 of the base address. */
4054 relocation
= (relocation
+ 2) & ~ 3;
4056 /* Put RELOCATION back into the insn. */
4057 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff) | ((relocation
>> 12) & 0x7ff);
4058 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x7ff) | ((relocation
>> 1) & 0x7ff);
4060 /* Put the relocated value back in the object file: */
4061 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
4062 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
4064 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
4068 case R_ARM_THM_JUMP24
:
4069 /* Thumb32 unconditional branch instruction. */
4072 bfd_boolean overflow
= FALSE
;
4073 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
4074 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
4075 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
4076 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
4078 bfd_signed_vma signed_check
;
4080 /* Need to refetch the addend, reconstruct the top three bits, and glue the
4081 two pieces together. */
4082 if (globals
->use_rel
)
4084 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
4085 bfd_vma hi
= (upper_insn
& 0x03ff);
4086 bfd_vma I1
= (lower_insn
& 0x2000) >> 13;
4087 bfd_vma I2
= (lower_insn
& 0x0800) >> 11;
4088 bfd_vma lo
= (lower_insn
& 0x07ff);
4094 signed_addend
= (S
<< 24) | (I1
<< 23) | (I2
<< 22) | (hi
<< 12) | (lo
<< 1);
4095 signed_addend
-= (1 << 24); /* Sign extend. */
4098 /* ??? Should handle interworking? GCC might someday try to
4099 use this for tail calls. */
4101 relocation
= value
+ signed_addend
;
4102 relocation
-= (input_section
->output_section
->vma
4103 + input_section
->output_offset
4106 check
= relocation
>> howto
->rightshift
;
4108 /* If this is a signed value, the rightshift just dropped
4109 leading 1 bits (assuming twos complement). */
4110 if ((bfd_signed_vma
) relocation
>= 0)
4111 signed_check
= check
;
4113 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
4115 /* Assumes two's complement. */
4116 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4119 /* Put RELOCATION back into the insn. */
4121 bfd_vma S
= (relocation
& 0x01000000) >> 24;
4122 bfd_vma I1
= (relocation
& 0x00800000) >> 23;
4123 bfd_vma I2
= (relocation
& 0x00400000) >> 22;
4124 bfd_vma hi
= (relocation
& 0x003ff000) >> 12;
4125 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
4130 upper_insn
= (upper_insn
& (bfd_vma
) 0xf800) | (S
<< 10) | hi
;
4131 lower_insn
= (lower_insn
& (bfd_vma
) 0xd000) | (I1
<< 13) | (I2
<< 11) | lo
;
4134 /* Put the relocated value back in the object file: */
4135 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
4136 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
4138 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
4141 case R_ARM_THM_JUMP19
:
4142 /* Thumb32 conditional branch instruction. */
4145 bfd_boolean overflow
= FALSE
;
4146 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
4147 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
4148 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
4149 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
4151 bfd_signed_vma signed_check
;
4153 /* Need to refetch the addend, reconstruct the top three bits,
4154 and squish the two 11 bit pieces together. */
4155 if (globals
->use_rel
)
4157 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
4158 bfd_vma upper
= (upper_insn
& 0x001f);
4159 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
4160 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
4161 bfd_vma lower
= (lower_insn
& 0x07ff);
4166 upper
-= 0x0100; /* Sign extend. */
4168 addend
= (upper
<< 12) | (lower
<< 1);
4169 signed_addend
= addend
;
4172 /* ??? Should handle interworking? GCC might someday try to
4173 use this for tail calls. */
4175 relocation
= value
+ signed_addend
;
4176 relocation
-= (input_section
->output_section
->vma
4177 + input_section
->output_offset
4180 check
= relocation
>> howto
->rightshift
;
4182 /* If this is a signed value, the rightshift just dropped
4183 leading 1 bits (assuming twos complement). */
4184 if ((bfd_signed_vma
) relocation
>= 0)
4185 signed_check
= check
;
4187 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
4189 /* Assumes two's complement. */
4190 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4193 /* Put RELOCATION back into the insn. */
4195 bfd_vma S
= (relocation
& 0x00100000) >> 20;
4196 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
4197 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
4198 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
4199 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
4201 upper_insn
= (upper_insn
& 0xfb30) | (S
<< 10) | hi
;
4202 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
4205 /* Put the relocated value back in the object file: */
4206 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
4207 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
4209 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
4212 case R_ARM_THM_JUMP11
:
4213 case R_ARM_THM_JUMP8
:
4214 case R_ARM_THM_JUMP6
:
4215 /* Thumb B (branch) instruction). */
4217 bfd_signed_vma relocation
;
4218 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
4219 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
4220 bfd_signed_vma signed_check
;
4222 /* CZB cannot jump backward. */
4223 if (r_type
== R_ARM_THM_JUMP6
)
4224 reloc_signed_min
= 0;
4226 if (globals
->use_rel
)
4228 /* Need to refetch addend. */
4229 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
4230 if (addend
& ((howto
->src_mask
+ 1) >> 1))
4233 signed_addend
&= ~ howto
->src_mask
;
4234 signed_addend
|= addend
;
4237 signed_addend
= addend
;
4238 /* The value in the insn has been right shifted. We need to
4239 undo this, so that we can perform the address calculation
4240 in terms of bytes. */
4241 signed_addend
<<= howto
->rightshift
;
4243 relocation
= value
+ signed_addend
;
4245 relocation
-= (input_section
->output_section
->vma
4246 + input_section
->output_offset
4249 relocation
>>= howto
->rightshift
;
4250 signed_check
= relocation
;
4252 if (r_type
== R_ARM_THM_JUMP6
)
4253 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
4255 relocation
&= howto
->dst_mask
;
4256 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
4258 bfd_put_16 (input_bfd
, relocation
, hit_data
);
4260 /* Assumes two's complement. */
4261 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4262 return bfd_reloc_overflow
;
4264 return bfd_reloc_ok
;
4267 case R_ARM_ALU_PCREL7_0
:
4268 case R_ARM_ALU_PCREL15_8
:
4269 case R_ARM_ALU_PCREL23_15
:
4274 insn
= bfd_get_32 (input_bfd
, hit_data
);
4275 if (globals
->use_rel
)
4277 /* Extract the addend. */
4278 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
4279 signed_addend
= addend
;
4281 relocation
= value
+ signed_addend
;
4283 relocation
-= (input_section
->output_section
->vma
4284 + input_section
->output_offset
4286 insn
= (insn
& ~0xfff)
4287 | ((howto
->bitpos
<< 7) & 0xf00)
4288 | ((relocation
>> howto
->bitpos
) & 0xff);
4289 bfd_put_32 (input_bfd
, value
, hit_data
);
4291 return bfd_reloc_ok
;
4293 case R_ARM_GNU_VTINHERIT
:
4294 case R_ARM_GNU_VTENTRY
:
4295 return bfd_reloc_ok
;
4297 case R_ARM_GOTOFF32
:
4298 /* Relocation is relative to the start of the
4299 global offset table. */
4301 BFD_ASSERT (sgot
!= NULL
);
4303 return bfd_reloc_notsupported
;
4305 /* If we are addressing a Thumb function, we need to adjust the
4306 address by one, so that attempts to call the function pointer will
4307 correctly interpret it as Thumb code. */
4308 if (sym_flags
== STT_ARM_TFUNC
)
4311 /* Note that sgot->output_offset is not involved in this
4312 calculation. We always want the start of .got. If we
4313 define _GLOBAL_OFFSET_TABLE in a different way, as is
4314 permitted by the ABI, we might have to change this
4316 value
-= sgot
->output_section
->vma
;
4317 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4318 contents
, rel
->r_offset
, value
,
4322 /* Use global offset table as symbol value. */
4323 BFD_ASSERT (sgot
!= NULL
);
4326 return bfd_reloc_notsupported
;
4328 *unresolved_reloc_p
= FALSE
;
4329 value
= sgot
->output_section
->vma
;
4330 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4331 contents
, rel
->r_offset
, value
,
4335 case R_ARM_GOT_PREL
:
4336 /* Relocation is to the entry for this symbol in the
4337 global offset table. */
4339 return bfd_reloc_notsupported
;
4346 off
= h
->got
.offset
;
4347 BFD_ASSERT (off
!= (bfd_vma
) -1);
4348 dyn
= globals
->root
.dynamic_sections_created
;
4350 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
4352 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4353 || (ELF_ST_VISIBILITY (h
->other
)
4354 && h
->root
.type
== bfd_link_hash_undefweak
))
4356 /* This is actually a static link, or it is a -Bsymbolic link
4357 and the symbol is defined locally. We must initialize this
4358 entry in the global offset table. Since the offset must
4359 always be a multiple of 4, we use the least significant bit
4360 to record whether we have initialized it already.
4362 When doing a dynamic link, we create a .rel(a).got relocation
4363 entry to initialize the value. This is done in the
4364 finish_dynamic_symbol routine. */
4369 /* If we are addressing a Thumb function, we need to
4370 adjust the address by one, so that attempts to
4371 call the function pointer will correctly
4372 interpret it as Thumb code. */
4373 if (sym_flags
== STT_ARM_TFUNC
)
4376 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
4381 *unresolved_reloc_p
= FALSE
;
4383 value
= sgot
->output_offset
+ off
;
4389 BFD_ASSERT (local_got_offsets
!= NULL
&&
4390 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
4392 off
= local_got_offsets
[r_symndx
];
4394 /* The offset must always be a multiple of 4. We use the
4395 least significant bit to record whether we have already
4396 generated the necessary reloc. */
4401 /* If we are addressing a Thumb function, we need to
4402 adjust the address by one, so that attempts to
4403 call the function pointer will correctly
4404 interpret it as Thumb code. */
4405 if (sym_flags
== STT_ARM_TFUNC
)
4408 if (globals
->use_rel
)
4409 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
4414 Elf_Internal_Rela outrel
;
4417 srelgot
= (bfd_get_section_by_name
4418 (dynobj
, RELOC_SECTION (globals
, ".got")));
4419 BFD_ASSERT (srelgot
!= NULL
);
4421 outrel
.r_addend
= addend
+ value
;
4422 outrel
.r_offset
= (sgot
->output_section
->vma
4423 + sgot
->output_offset
4425 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
4426 loc
= srelgot
->contents
;
4427 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
4428 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4431 local_got_offsets
[r_symndx
] |= 1;
4434 value
= sgot
->output_offset
+ off
;
4436 if (r_type
!= R_ARM_GOT32
)
4437 value
+= sgot
->output_section
->vma
;
4439 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4440 contents
, rel
->r_offset
, value
,
4443 case R_ARM_TLS_LDO32
:
4444 value
= value
- dtpoff_base (info
);
4446 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4447 contents
, rel
->r_offset
, value
,
4450 case R_ARM_TLS_LDM32
:
4454 if (globals
->sgot
== NULL
)
4457 off
= globals
->tls_ldm_got
.offset
;
4463 /* If we don't know the module number, create a relocation
4467 Elf_Internal_Rela outrel
;
4470 if (globals
->srelgot
== NULL
)
4473 outrel
.r_addend
= 0;
4474 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
4475 + globals
->sgot
->output_offset
+ off
);
4476 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
4478 if (globals
->use_rel
)
4479 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4480 globals
->sgot
->contents
+ off
);
4482 loc
= globals
->srelgot
->contents
;
4483 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
4484 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4487 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
4489 globals
->tls_ldm_got
.offset
|= 1;
4492 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
4493 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
4495 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4496 contents
, rel
->r_offset
, value
,
4500 case R_ARM_TLS_GD32
:
4501 case R_ARM_TLS_IE32
:
4507 if (globals
->sgot
== NULL
)
4514 dyn
= globals
->root
.dynamic_sections_created
;
4515 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
4517 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
4519 *unresolved_reloc_p
= FALSE
;
4522 off
= h
->got
.offset
;
4523 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
4527 if (local_got_offsets
== NULL
)
4529 off
= local_got_offsets
[r_symndx
];
4530 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
4533 if (tls_type
== GOT_UNKNOWN
)
4540 bfd_boolean need_relocs
= FALSE
;
4541 Elf_Internal_Rela outrel
;
4542 bfd_byte
*loc
= NULL
;
4545 /* The GOT entries have not been initialized yet. Do it
4546 now, and emit any relocations. If both an IE GOT and a
4547 GD GOT are necessary, we emit the GD first. */
4549 if ((info
->shared
|| indx
!= 0)
4551 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4552 || h
->root
.type
!= bfd_link_hash_undefweak
))
4555 if (globals
->srelgot
== NULL
)
4557 loc
= globals
->srelgot
->contents
;
4558 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
4561 if (tls_type
& GOT_TLS_GD
)
4565 outrel
.r_addend
= 0;
4566 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
4567 + globals
->sgot
->output_offset
4569 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
4571 if (globals
->use_rel
)
4572 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4573 globals
->sgot
->contents
+ cur_off
);
4575 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4576 globals
->srelgot
->reloc_count
++;
4577 loc
+= RELOC_SIZE (globals
);
4580 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
4581 globals
->sgot
->contents
+ cur_off
+ 4);
4584 outrel
.r_addend
= 0;
4585 outrel
.r_info
= ELF32_R_INFO (indx
,
4586 R_ARM_TLS_DTPOFF32
);
4587 outrel
.r_offset
+= 4;
4589 if (globals
->use_rel
)
4590 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4591 globals
->sgot
->contents
+ cur_off
+ 4);
4594 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4595 globals
->srelgot
->reloc_count
++;
4596 loc
+= RELOC_SIZE (globals
);
4601 /* If we are not emitting relocations for a
4602 general dynamic reference, then we must be in a
4603 static link or an executable link with the
4604 symbol binding locally. Mark it as belonging
4605 to module 1, the executable. */
4606 bfd_put_32 (output_bfd
, 1,
4607 globals
->sgot
->contents
+ cur_off
);
4608 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
4609 globals
->sgot
->contents
+ cur_off
+ 4);
4615 if (tls_type
& GOT_TLS_IE
)
4620 outrel
.r_addend
= value
- dtpoff_base (info
);
4622 outrel
.r_addend
= 0;
4623 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
4624 + globals
->sgot
->output_offset
4626 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
4628 if (globals
->use_rel
)
4629 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4630 globals
->sgot
->contents
+ cur_off
);
4632 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4633 globals
->srelgot
->reloc_count
++;
4634 loc
+= RELOC_SIZE (globals
);
4637 bfd_put_32 (output_bfd
, tpoff (info
, value
),
4638 globals
->sgot
->contents
+ cur_off
);
4645 local_got_offsets
[r_symndx
] |= 1;
4648 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
4650 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
4651 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
4653 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4654 contents
, rel
->r_offset
, value
,
4658 case R_ARM_TLS_LE32
:
4661 (*_bfd_error_handler
)
4662 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
4663 input_bfd
, input_section
,
4664 (long) rel
->r_offset
, howto
->name
);
4668 value
= tpoff (info
, value
);
4670 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4671 contents
, rel
->r_offset
, value
,
4675 if (globals
->fix_v4bx
)
4677 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4679 /* Ensure that we have a BX instruction. */
4680 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
4682 /* Preserve Rm (lowest four bits) and the condition code
4683 (highest four bits). Other bits encode MOV PC,Rm. */
4684 insn
= (insn
& 0xf000000f) | 0x01a0f000;
4686 bfd_put_32 (input_bfd
, insn
, hit_data
);
4688 return bfd_reloc_ok
;
4690 case R_ARM_MOVW_ABS_NC
:
4691 case R_ARM_MOVT_ABS
:
4692 case R_ARM_MOVW_PREL_NC
:
4693 case R_ARM_MOVT_PREL
:
4695 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4697 if (globals
->use_rel
)
4699 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
4700 signed_addend
= (addend
^ 0x10000) - 0x10000;
4702 value
+= signed_addend
;
4703 if (sym_flags
== STT_ARM_TFUNC
)
4706 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
4707 value
-= (input_section
->output_section
->vma
4708 + input_section
->output_offset
+ rel
->r_offset
);
4710 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
)
4714 insn
|= value
& 0xfff;
4715 insn
|= (value
& 0xf000) << 4;
4716 bfd_put_32 (input_bfd
, insn
, hit_data
);
4718 return bfd_reloc_ok
;
4720 case R_ARM_THM_MOVW_ABS_NC
:
4721 case R_ARM_THM_MOVT_ABS
:
4722 case R_ARM_THM_MOVW_PREL_NC
:
4723 case R_ARM_THM_MOVT_PREL
:
4727 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
4728 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
4730 if (globals
->use_rel
)
4732 addend
= ((insn
>> 4) & 0xf000)
4733 | ((insn
>> 15) & 0x0800)
4734 | ((insn
>> 4) & 0x0700)
4736 signed_addend
= (addend
^ 0x10000) - 0x10000;
4738 value
+= signed_addend
;
4739 if (sym_flags
== STT_ARM_TFUNC
)
4742 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
4743 value
-= (input_section
->output_section
->vma
4744 + input_section
->output_offset
+ rel
->r_offset
);
4746 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
)
4750 insn
|= (value
& 0xf000) << 4;
4751 insn
|= (value
& 0x0800) << 15;
4752 insn
|= (value
& 0x0700) << 4;
4753 insn
|= (value
& 0x00ff);
4755 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4756 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4758 return bfd_reloc_ok
;
4760 case R_ARM_ALU_PC_G0_NC
:
4761 case R_ARM_ALU_PC_G1_NC
:
4762 case R_ARM_ALU_PC_G0
:
4763 case R_ARM_ALU_PC_G1
:
4764 case R_ARM_ALU_PC_G2
:
4765 case R_ARM_ALU_SB_G0_NC
:
4766 case R_ARM_ALU_SB_G1_NC
:
4767 case R_ARM_ALU_SB_G0
:
4768 case R_ARM_ALU_SB_G1
:
4769 case R_ARM_ALU_SB_G2
:
4771 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4772 bfd_vma pc
= input_section
->output_section
->vma
4773 + input_section
->output_offset
+ rel
->r_offset
;
4774 /* sb should be the origin of the *segment* containing the symbol.
4775 It is not clear how to obtain this OS-dependent value, so we
4776 make an arbitrary choice of zero. */
4780 bfd_signed_vma signed_value
;
4783 /* Determine which group of bits to select. */
4786 case R_ARM_ALU_PC_G0_NC
:
4787 case R_ARM_ALU_PC_G0
:
4788 case R_ARM_ALU_SB_G0_NC
:
4789 case R_ARM_ALU_SB_G0
:
4793 case R_ARM_ALU_PC_G1_NC
:
4794 case R_ARM_ALU_PC_G1
:
4795 case R_ARM_ALU_SB_G1_NC
:
4796 case R_ARM_ALU_SB_G1
:
4800 case R_ARM_ALU_PC_G2
:
4801 case R_ARM_ALU_SB_G2
:
4809 /* If REL, extract the addend from the insn. If RELA, it will
4810 have already been fetched for us. */
4811 if (globals
->use_rel
)
4814 bfd_vma constant
= insn
& 0xff;
4815 bfd_vma rotation
= (insn
& 0xf00) >> 8;
4818 signed_addend
= constant
;
4821 /* Compensate for the fact that in the instruction, the
4822 rotation is stored in multiples of 2 bits. */
4825 /* Rotate "constant" right by "rotation" bits. */
4826 signed_addend
= (constant
>> rotation
) |
4827 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
4830 /* Determine if the instruction is an ADD or a SUB.
4831 (For REL, this determines the sign of the addend.) */
4832 negative
= identify_add_or_sub (insn
);
4835 (*_bfd_error_handler
)
4836 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
4837 input_bfd
, input_section
,
4838 (long) rel
->r_offset
, howto
->name
);
4839 return bfd_reloc_overflow
;
4842 signed_addend
*= negative
;
4845 /* Compute the value (X) to go in the place. */
4846 if (r_type
== R_ARM_ALU_PC_G0_NC
4847 || r_type
== R_ARM_ALU_PC_G1_NC
4848 || r_type
== R_ARM_ALU_PC_G0
4849 || r_type
== R_ARM_ALU_PC_G1
4850 || r_type
== R_ARM_ALU_PC_G2
)
4852 signed_value
= value
- pc
+ signed_addend
;
4854 /* Section base relative. */
4855 signed_value
= value
- sb
+ signed_addend
;
4857 /* If the target symbol is a Thumb function, then set the
4858 Thumb bit in the address. */
4859 if (sym_flags
== STT_ARM_TFUNC
)
4862 /* Calculate the value of the relevant G_n, in encoded
4863 constant-with-rotation format. */
4864 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
4867 /* Check for overflow if required. */
4868 if ((r_type
== R_ARM_ALU_PC_G0
4869 || r_type
== R_ARM_ALU_PC_G1
4870 || r_type
== R_ARM_ALU_PC_G2
4871 || r_type
== R_ARM_ALU_SB_G0
4872 || r_type
== R_ARM_ALU_SB_G1
4873 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
4875 (*_bfd_error_handler
)
4876 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
4877 input_bfd
, input_section
,
4878 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
4879 return bfd_reloc_overflow
;
4882 /* Mask out the value and the ADD/SUB part of the opcode; take care
4883 not to destroy the S bit. */
4886 /* Set the opcode according to whether the value to go in the
4887 place is negative. */
4888 if (signed_value
< 0)
4893 /* Encode the offset. */
4896 bfd_put_32 (input_bfd
, insn
, hit_data
);
4898 return bfd_reloc_ok
;
4900 case R_ARM_LDR_PC_G0
:
4901 case R_ARM_LDR_PC_G1
:
4902 case R_ARM_LDR_PC_G2
:
4903 case R_ARM_LDR_SB_G0
:
4904 case R_ARM_LDR_SB_G1
:
4905 case R_ARM_LDR_SB_G2
:
4907 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4908 bfd_vma pc
= input_section
->output_section
->vma
4909 + input_section
->output_offset
+ rel
->r_offset
;
4910 bfd_vma sb
= 0; /* See note above. */
4912 bfd_signed_vma signed_value
;
4915 /* Determine which groups of bits to calculate. */
4918 case R_ARM_LDR_PC_G0
:
4919 case R_ARM_LDR_SB_G0
:
4923 case R_ARM_LDR_PC_G1
:
4924 case R_ARM_LDR_SB_G1
:
4928 case R_ARM_LDR_PC_G2
:
4929 case R_ARM_LDR_SB_G2
:
4937 /* If REL, extract the addend from the insn. If RELA, it will
4938 have already been fetched for us. */
4939 if (globals
->use_rel
)
4941 int negative
= (insn
& (1 << 23)) ? 1 : -1;
4942 signed_addend
= negative
* (insn
& 0xfff);
4945 /* Compute the value (X) to go in the place. */
4946 if (r_type
== R_ARM_LDR_PC_G0
4947 || r_type
== R_ARM_LDR_PC_G1
4948 || r_type
== R_ARM_LDR_PC_G2
)
4950 signed_value
= value
- pc
+ signed_addend
;
4952 /* Section base relative. */
4953 signed_value
= value
- sb
+ signed_addend
;
4955 /* Calculate the value of the relevant G_{n-1} to obtain
4956 the residual at that stage. */
4957 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
4959 /* Check for overflow. */
4960 if (residual
>= 0x1000)
4962 (*_bfd_error_handler
)
4963 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
4964 input_bfd
, input_section
,
4965 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
4966 return bfd_reloc_overflow
;
4969 /* Mask out the value and U bit. */
4972 /* Set the U bit if the value to go in the place is non-negative. */
4973 if (signed_value
>= 0)
4976 /* Encode the offset. */
4979 bfd_put_32 (input_bfd
, insn
, hit_data
);
4981 return bfd_reloc_ok
;
4983 case R_ARM_LDRS_PC_G0
:
4984 case R_ARM_LDRS_PC_G1
:
4985 case R_ARM_LDRS_PC_G2
:
4986 case R_ARM_LDRS_SB_G0
:
4987 case R_ARM_LDRS_SB_G1
:
4988 case R_ARM_LDRS_SB_G2
:
4990 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4991 bfd_vma pc
= input_section
->output_section
->vma
4992 + input_section
->output_offset
+ rel
->r_offset
;
4993 bfd_vma sb
= 0; /* See note above. */
4995 bfd_signed_vma signed_value
;
4998 /* Determine which groups of bits to calculate. */
5001 case R_ARM_LDRS_PC_G0
:
5002 case R_ARM_LDRS_SB_G0
:
5006 case R_ARM_LDRS_PC_G1
:
5007 case R_ARM_LDRS_SB_G1
:
5011 case R_ARM_LDRS_PC_G2
:
5012 case R_ARM_LDRS_SB_G2
:
5020 /* If REL, extract the addend from the insn. If RELA, it will
5021 have already been fetched for us. */
5022 if (globals
->use_rel
)
5024 int negative
= (insn
& (1 << 23)) ? 1 : -1;
5025 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
5028 /* Compute the value (X) to go in the place. */
5029 if (r_type
== R_ARM_LDRS_PC_G0
5030 || r_type
== R_ARM_LDRS_PC_G1
5031 || r_type
== R_ARM_LDRS_PC_G2
)
5033 signed_value
= value
- pc
+ signed_addend
;
5035 /* Section base relative. */
5036 signed_value
= value
- sb
+ signed_addend
;
5038 /* Calculate the value of the relevant G_{n-1} to obtain
5039 the residual at that stage. */
5040 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
5042 /* Check for overflow. */
5043 if (residual
>= 0x100)
5045 (*_bfd_error_handler
)
5046 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5047 input_bfd
, input_section
,
5048 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5049 return bfd_reloc_overflow
;
5052 /* Mask out the value and U bit. */
5055 /* Set the U bit if the value to go in the place is non-negative. */
5056 if (signed_value
>= 0)
5059 /* Encode the offset. */
5060 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
5062 bfd_put_32 (input_bfd
, insn
, hit_data
);
5064 return bfd_reloc_ok
;
5066 case R_ARM_LDC_PC_G0
:
5067 case R_ARM_LDC_PC_G1
:
5068 case R_ARM_LDC_PC_G2
:
5069 case R_ARM_LDC_SB_G0
:
5070 case R_ARM_LDC_SB_G1
:
5071 case R_ARM_LDC_SB_G2
:
5073 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5074 bfd_vma pc
= input_section
->output_section
->vma
5075 + input_section
->output_offset
+ rel
->r_offset
;
5076 bfd_vma sb
= 0; /* See note above. */
5078 bfd_signed_vma signed_value
;
5081 /* Determine which groups of bits to calculate. */
5084 case R_ARM_LDC_PC_G0
:
5085 case R_ARM_LDC_SB_G0
:
5089 case R_ARM_LDC_PC_G1
:
5090 case R_ARM_LDC_SB_G1
:
5094 case R_ARM_LDC_PC_G2
:
5095 case R_ARM_LDC_SB_G2
:
5103 /* If REL, extract the addend from the insn. If RELA, it will
5104 have already been fetched for us. */
5105 if (globals
->use_rel
)
5107 int negative
= (insn
& (1 << 23)) ? 1 : -1;
5108 signed_addend
= negative
* ((insn
& 0xff) << 2);
5111 /* Compute the value (X) to go in the place. */
5112 if (r_type
== R_ARM_LDC_PC_G0
5113 || r_type
== R_ARM_LDC_PC_G1
5114 || r_type
== R_ARM_LDC_PC_G2
)
5116 signed_value
= value
- pc
+ signed_addend
;
5118 /* Section base relative. */
5119 signed_value
= value
- sb
+ signed_addend
;
5121 /* Calculate the value of the relevant G_{n-1} to obtain
5122 the residual at that stage. */
5123 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
5125 /* Check for overflow. (The absolute value to go in the place must be
5126 divisible by four and, after having been divided by four, must
5127 fit in eight bits.) */
5128 if ((residual
& 0x3) != 0 || residual
>= 0x400)
5130 (*_bfd_error_handler
)
5131 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5132 input_bfd
, input_section
,
5133 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5134 return bfd_reloc_overflow
;
5137 /* Mask out the value and U bit. */
5140 /* Set the U bit if the value to go in the place is non-negative. */
5141 if (signed_value
>= 0)
5144 /* Encode the offset. */
5145 insn
|= residual
>> 2;
5147 bfd_put_32 (input_bfd
, insn
, hit_data
);
5149 return bfd_reloc_ok
;
5152 return bfd_reloc_notsupported
;
5158 uleb128_size (unsigned int i
)
5170 /* Return TRUE if the attribute has the default value (0/""). */
5172 is_default_attr (aeabi_attribute
*attr
)
5174 if ((attr
->type
& 1) && attr
->i
!= 0)
5176 if ((attr
->type
& 2) && attr
->s
&& *attr
->s
)
5182 /* Return the size of a single attribute. */
5184 eabi_attr_size(int tag
, aeabi_attribute
*attr
)
5188 if (is_default_attr (attr
))
5191 size
= uleb128_size (tag
);
5193 size
+= uleb128_size (attr
->i
);
5195 size
+= strlen ((char *)attr
->s
) + 1;
5199 /* Returns the size of the eabi object attributess section. */
5201 elf32_arm_eabi_attr_size (bfd
*abfd
)
5204 aeabi_attribute
*attr
;
5205 aeabi_attribute_list
*list
;
5208 attr
= elf32_arm_tdata (abfd
)->known_eabi_attributes
;
5209 size
= 16; /* 'A' <size> "aeabi" 0x1 <size>. */
5210 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
5211 size
+= eabi_attr_size (i
, &attr
[i
]);
5213 for (list
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5216 size
+= eabi_attr_size (list
->tag
, &list
->attr
);
5222 write_uleb128 (bfd_byte
*p
, unsigned int val
)
5237 /* Write attribute ATTR to butter P, and return a pointer to the following
5240 write_eabi_attribute (bfd_byte
*p
, int tag
, aeabi_attribute
*attr
)
5242 /* Suppress default entries. */
5243 if (is_default_attr(attr
))
5246 p
= write_uleb128 (p
, tag
);
5248 p
= write_uleb128 (p
, attr
->i
);
5253 len
= strlen (attr
->s
) + 1;
5254 memcpy (p
, attr
->s
, len
);
5261 /* Write the contents of the eabi attributes section to p. */
5263 elf32_arm_set_eabi_attr_contents (bfd
*abfd
, bfd_byte
*contents
, bfd_vma size
)
5266 aeabi_attribute
*attr
;
5267 aeabi_attribute_list
*list
;
5272 bfd_put_32 (abfd
, size
- 1, p
);
5274 memcpy (p
, "aeabi", 6);
5277 bfd_put_32 (abfd
, size
- 11, p
);
5280 attr
= elf32_arm_tdata (abfd
)->known_eabi_attributes
;
5281 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
5282 p
= write_eabi_attribute (p
, i
, &attr
[i
]);
5284 for (list
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5287 p
= write_eabi_attribute (p
, list
->tag
, &list
->attr
);
5290 /* Override final_link to handle EABI object attribute sections. */
5293 elf32_arm_bfd_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
5296 struct bfd_link_order
*p
;
5297 asection
*attr_section
= NULL
;
5301 /* elf32_arm_merge_private_bfd_data will already have merged the
5302 object attributes. Remove the input sections from the link, and set
5303 the contents of the output secton. */
5304 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5306 if (strcmp (o
->name
, ".ARM.attributes") == 0)
5308 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5310 asection
*input_section
;
5312 if (p
->type
!= bfd_indirect_link_order
)
5314 input_section
= p
->u
.indirect
.section
;
5315 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5316 elf_link_input_bfd ignores this section. */
5317 input_section
->flags
&= ~SEC_HAS_CONTENTS
;
5320 size
= elf32_arm_eabi_attr_size (abfd
);
5321 bfd_set_section_size (abfd
, o
, size
);
5323 /* Skip this section later on. */
5324 o
->map_head
.link_order
= NULL
;
5327 /* Invoke the ELF linker to do all the work. */
5328 if (!bfd_elf_final_link (abfd
, info
))
5333 contents
= bfd_malloc(size
);
5334 if (contents
== NULL
)
5336 elf32_arm_set_eabi_attr_contents (abfd
, contents
, size
);
5337 bfd_set_section_contents (abfd
, attr_section
, contents
, 0, size
);
5344 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
5346 arm_add_to_rel (bfd
* abfd
,
5348 reloc_howto_type
* howto
,
5349 bfd_signed_vma increment
)
5351 bfd_signed_vma addend
;
5353 if (howto
->type
== R_ARM_THM_CALL
)
5355 int upper_insn
, lower_insn
;
5358 upper_insn
= bfd_get_16 (abfd
, address
);
5359 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
5360 upper
= upper_insn
& 0x7ff;
5361 lower
= lower_insn
& 0x7ff;
5363 addend
= (upper
<< 12) | (lower
<< 1);
5364 addend
+= increment
;
5367 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
5368 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
5370 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
5371 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
5377 contents
= bfd_get_32 (abfd
, address
);
5379 /* Get the (signed) value from the instruction. */
5380 addend
= contents
& howto
->src_mask
;
5381 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5383 bfd_signed_vma mask
;
5386 mask
&= ~ howto
->src_mask
;
5390 /* Add in the increment, (which is a byte value). */
5391 switch (howto
->type
)
5394 addend
+= increment
;
5401 addend
<<= howto
->size
;
5402 addend
+= increment
;
5404 /* Should we check for overflow here ? */
5406 /* Drop any undesired bits. */
5407 addend
>>= howto
->rightshift
;
5411 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
5413 bfd_put_32 (abfd
, contents
, address
);
5417 #define IS_ARM_TLS_RELOC(R_TYPE) \
5418 ((R_TYPE) == R_ARM_TLS_GD32 \
5419 || (R_TYPE) == R_ARM_TLS_LDO32 \
5420 || (R_TYPE) == R_ARM_TLS_LDM32 \
5421 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
5422 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
5423 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
5424 || (R_TYPE) == R_ARM_TLS_LE32 \
5425 || (R_TYPE) == R_ARM_TLS_IE32)
5427 /* Relocate an ARM ELF section. */
5429 elf32_arm_relocate_section (bfd
* output_bfd
,
5430 struct bfd_link_info
* info
,
5432 asection
* input_section
,
5433 bfd_byte
* contents
,
5434 Elf_Internal_Rela
* relocs
,
5435 Elf_Internal_Sym
* local_syms
,
5436 asection
** local_sections
)
5438 Elf_Internal_Shdr
*symtab_hdr
;
5439 struct elf_link_hash_entry
**sym_hashes
;
5440 Elf_Internal_Rela
*rel
;
5441 Elf_Internal_Rela
*relend
;
5443 struct elf32_arm_link_hash_table
* globals
;
5445 globals
= elf32_arm_hash_table (info
);
5446 if (info
->relocatable
&& !globals
->use_rel
)
5449 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
5450 sym_hashes
= elf_sym_hashes (input_bfd
);
5453 relend
= relocs
+ input_section
->reloc_count
;
5454 for (; rel
< relend
; rel
++)
5457 reloc_howto_type
* howto
;
5458 unsigned long r_symndx
;
5459 Elf_Internal_Sym
* sym
;
5461 struct elf_link_hash_entry
* h
;
5463 bfd_reloc_status_type r
;
5466 bfd_boolean unresolved_reloc
= FALSE
;
5468 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5469 r_type
= ELF32_R_TYPE (rel
->r_info
);
5470 r_type
= arm_real_reloc_type (globals
, r_type
);
5472 if ( r_type
== R_ARM_GNU_VTENTRY
5473 || r_type
== R_ARM_GNU_VTINHERIT
)
5476 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
5477 howto
= bfd_reloc
.howto
;
5479 if (info
->relocatable
&& globals
->use_rel
)
5481 /* This is a relocatable link. We don't have to change
5482 anything, unless the reloc is against a section symbol,
5483 in which case we have to adjust according to where the
5484 section symbol winds up in the output section. */
5485 if (r_symndx
< symtab_hdr
->sh_info
)
5487 sym
= local_syms
+ r_symndx
;
5488 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
5490 sec
= local_sections
[r_symndx
];
5491 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
5493 (bfd_signed_vma
) (sec
->output_offset
5501 /* This is a final link. */
5506 if (r_symndx
< symtab_hdr
->sh_info
)
5508 sym
= local_syms
+ r_symndx
;
5509 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
5510 sec
= local_sections
[r_symndx
];
5511 if (globals
->use_rel
)
5513 relocation
= (sec
->output_section
->vma
5514 + sec
->output_offset
5516 if ((sec
->flags
& SEC_MERGE
)
5517 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
5520 bfd_vma addend
, value
;
5522 if (howto
->rightshift
)
5524 (*_bfd_error_handler
)
5525 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
5526 input_bfd
, input_section
,
5527 (long) rel
->r_offset
, howto
->name
);
5531 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
5533 /* Get the (signed) value from the instruction. */
5534 addend
= value
& howto
->src_mask
;
5535 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5537 bfd_signed_vma mask
;
5540 mask
&= ~ howto
->src_mask
;
5545 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
5547 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
5548 value
= (value
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
5549 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
5553 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
5559 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
5560 r_symndx
, symtab_hdr
, sym_hashes
,
5562 unresolved_reloc
, warned
);
5568 name
= h
->root
.root
.string
;
5571 name
= (bfd_elf_string_from_elf_section
5572 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
5573 if (name
== NULL
|| *name
== '\0')
5574 name
= bfd_section_name (input_bfd
, sec
);
5578 && r_type
!= R_ARM_NONE
5580 || h
->root
.type
== bfd_link_hash_defined
5581 || h
->root
.type
== bfd_link_hash_defweak
)
5582 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
5584 (*_bfd_error_handler
)
5585 ((sym_type
== STT_TLS
5586 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
5587 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
5590 (long) rel
->r_offset
,
5595 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
5596 input_section
, contents
, rel
,
5597 relocation
, info
, sec
, name
,
5598 (h
? ELF_ST_TYPE (h
->type
) :
5599 ELF_ST_TYPE (sym
->st_info
)), h
,
5602 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5603 because such sections are not SEC_ALLOC and thus ld.so will
5604 not process them. */
5605 if (unresolved_reloc
5606 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
5609 (*_bfd_error_handler
)
5610 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5613 (long) rel
->r_offset
,
5615 h
->root
.root
.string
);
5619 if (r
!= bfd_reloc_ok
)
5621 const char * msg
= (const char *) 0;
5625 case bfd_reloc_overflow
:
5626 /* If the overflowing reloc was to an undefined symbol,
5627 we have already printed one error message and there
5628 is no point complaining again. */
5630 h
->root
.type
!= bfd_link_hash_undefined
)
5631 && (!((*info
->callbacks
->reloc_overflow
)
5632 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
5633 (bfd_vma
) 0, input_bfd
, input_section
,
5638 case bfd_reloc_undefined
:
5639 if (!((*info
->callbacks
->undefined_symbol
)
5640 (info
, name
, input_bfd
, input_section
,
5641 rel
->r_offset
, TRUE
)))
5645 case bfd_reloc_outofrange
:
5646 msg
= _("internal error: out of range error");
5649 case bfd_reloc_notsupported
:
5650 msg
= _("internal error: unsupported relocation error");
5653 case bfd_reloc_dangerous
:
5654 msg
= _("internal error: dangerous error");
5658 msg
= _("internal error: unknown error");
5662 if (!((*info
->callbacks
->warning
)
5663 (info
, msg
, name
, input_bfd
, input_section
,
5674 /* Allocate/find an object attribute. */
5675 static aeabi_attribute
*
5676 elf32_arm_new_eabi_attr (bfd
*abfd
, int tag
)
5678 aeabi_attribute
*attr
;
5679 aeabi_attribute_list
*list
;
5680 aeabi_attribute_list
*p
;
5681 aeabi_attribute_list
**lastp
;
5684 if (tag
< NUM_KNOWN_ATTRIBUTES
)
5686 /* Knwon tags are preallocated. */
5687 attr
= &elf32_arm_tdata (abfd
)->known_eabi_attributes
[tag
];
5691 /* Create a new tag. */
5692 list
= (aeabi_attribute_list
*)
5693 bfd_alloc (abfd
, sizeof (aeabi_attribute_list
));
5694 memset (list
, 0, sizeof (aeabi_attribute_list
));
5696 /* Keep the tag list in order. */
5697 lastp
= &elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5698 for (p
= *lastp
; p
; p
= p
->next
)
5704 list
->next
= *lastp
;
5713 elf32_arm_get_eabi_attr_int (bfd
*abfd
, int tag
)
5715 aeabi_attribute_list
*p
;
5717 if (tag
< NUM_KNOWN_ATTRIBUTES
)
5719 /* Knwon tags are preallocated. */
5720 return elf32_arm_tdata (abfd
)->known_eabi_attributes
[tag
].i
;
5724 for (p
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5738 elf32_arm_add_eabi_attr_int (bfd
*abfd
, int tag
, unsigned int i
)
5740 aeabi_attribute
*attr
;
5742 attr
= elf32_arm_new_eabi_attr (abfd
, tag
);
5748 attr_strdup (bfd
*abfd
, const char * s
)
5753 len
= strlen (s
) + 1;
5754 p
= (char *)bfd_alloc(abfd
, len
);
5755 return memcpy (p
, s
, len
);
5759 elf32_arm_add_eabi_attr_string (bfd
*abfd
, int tag
, const char *s
)
5761 aeabi_attribute
*attr
;
5763 attr
= elf32_arm_new_eabi_attr (abfd
, tag
);
5765 attr
->s
= attr_strdup (abfd
, s
);
5769 elf32_arm_add_eabi_attr_compat (bfd
*abfd
, unsigned int i
, const char *s
)
5771 aeabi_attribute_list
*list
;
5772 aeabi_attribute_list
*p
;
5773 aeabi_attribute_list
**lastp
;
5775 list
= (aeabi_attribute_list
*)
5776 bfd_alloc (abfd
, sizeof (aeabi_attribute_list
));
5777 memset (list
, 0, sizeof (aeabi_attribute_list
));
5778 list
->tag
= Tag_compatibility
;
5779 list
->attr
.type
= 3;
5781 list
->attr
.s
= attr_strdup (abfd
, s
);
5783 lastp
= &elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5784 for (p
= *lastp
; p
; p
= p
->next
)
5787 if (p
->tag
!= Tag_compatibility
)
5789 cmp
= strcmp(s
, p
->attr
.s
);
5790 if (cmp
< 0 || (cmp
== 0 && i
< p
->attr
.i
))
5794 list
->next
= *lastp
;
5798 /* Set the right machine number. */
5801 elf32_arm_object_p (bfd
*abfd
)
5805 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
5807 if (mach
!= bfd_mach_arm_unknown
)
5808 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
5810 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
5811 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
5814 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
5819 /* Function to keep ARM specific flags in the ELF header. */
5822 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
5824 if (elf_flags_init (abfd
)
5825 && elf_elfheader (abfd
)->e_flags
!= flags
)
5827 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
5829 if (flags
& EF_ARM_INTERWORK
)
5830 (*_bfd_error_handler
)
5831 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
5835 (_("Warning: Clearing the interworking flag of %B due to outside request"),
5841 elf_elfheader (abfd
)->e_flags
= flags
;
5842 elf_flags_init (abfd
) = TRUE
;
5848 /* Copy the eabi object attribute from IBFD to OBFD. */
5850 copy_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
5852 aeabi_attribute
*in_attr
;
5853 aeabi_attribute
*out_attr
;
5854 aeabi_attribute_list
*list
;
5857 in_attr
= elf32_arm_tdata (ibfd
)->known_eabi_attributes
;
5858 out_attr
= elf32_arm_tdata (obfd
)->known_eabi_attributes
;
5859 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
5861 out_attr
->i
= in_attr
->i
;
5862 if (in_attr
->s
&& *in_attr
->s
)
5863 out_attr
->s
= attr_strdup (obfd
, in_attr
->s
);
5868 for (list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
5872 in_attr
= &list
->attr
;
5873 switch (in_attr
->type
)
5876 elf32_arm_add_eabi_attr_int (obfd
, list
->tag
, in_attr
->i
);
5879 elf32_arm_add_eabi_attr_string (obfd
, list
->tag
, in_attr
->s
);
5882 elf32_arm_add_eabi_attr_compat (obfd
, in_attr
->i
, in_attr
->s
);
5891 /* Copy backend specific data from one object module to another. */
5894 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5899 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
5900 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
5903 in_flags
= elf_elfheader (ibfd
)->e_flags
;
5904 out_flags
= elf_elfheader (obfd
)->e_flags
;
5906 if (elf_flags_init (obfd
)
5907 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
5908 && in_flags
!= out_flags
)
5910 /* Cannot mix APCS26 and APCS32 code. */
5911 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
5914 /* Cannot mix float APCS and non-float APCS code. */
5915 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
5918 /* If the src and dest have different interworking flags
5919 then turn off the interworking bit. */
5920 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
5922 if (out_flags
& EF_ARM_INTERWORK
)
5924 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
5927 in_flags
&= ~EF_ARM_INTERWORK
;
5930 /* Likewise for PIC, though don't warn for this case. */
5931 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
5932 in_flags
&= ~EF_ARM_PIC
;
5935 elf_elfheader (obfd
)->e_flags
= in_flags
;
5936 elf_flags_init (obfd
) = TRUE
;
5938 /* Also copy the EI_OSABI field. */
5939 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
5940 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
5942 /* Copy EABI object attributes. */
5943 copy_eabi_attributes (ibfd
, obfd
);
5948 /* Values for Tag_ABI_PCS_R9_use. */
5957 /* Values for Tag_ABI_PCS_RW_data. */
5960 AEABI_PCS_RW_data_absolute
,
5961 AEABI_PCS_RW_data_PCrel
,
5962 AEABI_PCS_RW_data_SBrel
,
5963 AEABI_PCS_RW_data_unused
5966 /* Values for Tag_ABI_enum_size. */
5972 AEABI_enum_forced_wide
5975 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
5976 are conflicting attributes. */
5978 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
5980 aeabi_attribute
*in_attr
;
5981 aeabi_attribute
*out_attr
;
5982 aeabi_attribute_list
*in_list
;
5983 aeabi_attribute_list
*out_list
;
5984 /* Some tags have 0 = don't care, 1 = strong requirement,
5985 2 = weak requirement. */
5986 static const int order_312
[3] = {3, 1, 2};
5989 if (!elf32_arm_tdata (ibfd
)->known_eabi_attributes
[0].i
)
5991 /* This is the first object. Copy the attributes. */
5992 copy_eabi_attributes (ibfd
, obfd
);
5996 /* Use the Tag_null value to indicate the attributes have been
5998 elf32_arm_tdata (ibfd
)->known_eabi_attributes
[0].i
= 1;
6000 in_attr
= elf32_arm_tdata (ibfd
)->known_eabi_attributes
;
6001 out_attr
= elf32_arm_tdata (obfd
)->known_eabi_attributes
;
6002 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
6003 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
6005 /* Ignore mismatches if teh object doesn't use floating point. */
6006 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
6007 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
6008 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
6011 (_("ERROR: %B uses VFP register arguments, %B does not"),
6017 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
6019 /* Merge this attribute with existing attributes. */
6022 case Tag_CPU_raw_name
:
6024 /* Use whichever has the greatest architecture requirements. */
6025 if (in_attr
[Tag_CPU_arch
].i
> out_attr
[Tag_CPU_arch
].i
)
6026 out_attr
[i
].s
= attr_strdup(obfd
, in_attr
[i
].s
);
6029 case Tag_ABI_optimization_goals
:
6030 case Tag_ABI_FP_optimization_goals
:
6031 /* Use the first value seen. */
6035 case Tag_ARM_ISA_use
:
6036 case Tag_THUMB_ISA_use
:
6040 /* ??? Do NEON and WMMX conflict? */
6041 case Tag_ABI_FP_rounding
:
6042 case Tag_ABI_FP_denormal
:
6043 case Tag_ABI_FP_exceptions
:
6044 case Tag_ABI_FP_user_exceptions
:
6045 case Tag_ABI_FP_number_model
:
6046 case Tag_ABI_align8_preserved
:
6047 case Tag_ABI_HardFP_use
:
6048 /* Use the largest value specified. */
6049 if (in_attr
[i
].i
> out_attr
[i
].i
)
6050 out_attr
[i
].i
= in_attr
[i
].i
;
6053 case Tag_CPU_arch_profile
:
6054 /* Warn if conflicting architecture profiles used. */
6055 if (out_attr
[i
].i
&& in_attr
[i
].i
&& in_attr
[i
].i
!= out_attr
[i
].i
)
6058 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
6059 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
6063 out_attr
[i
].i
= in_attr
[i
].i
;
6065 case Tag_PCS_config
:
6066 if (out_attr
[i
].i
== 0)
6067 out_attr
[i
].i
= in_attr
[i
].i
;
6068 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
6070 /* It's sometimes ok to mix different configs, so this is only
6073 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
6076 case Tag_ABI_PCS_R9_use
:
6077 if (out_attr
[i
].i
!= AEABI_R9_unused
6078 && in_attr
[i
].i
!= AEABI_R9_unused
)
6081 (_("ERROR: %B: Conflicting use of R9"), ibfd
);
6084 if (out_attr
[i
].i
== AEABI_R9_unused
)
6085 out_attr
[i
].i
= in_attr
[i
].i
;
6087 case Tag_ABI_PCS_RW_data
:
6088 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
6089 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
6090 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
6093 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
6097 /* Use the smallest value specified. */
6098 if (in_attr
[i
].i
< out_attr
[i
].i
)
6099 out_attr
[i
].i
= in_attr
[i
].i
;
6101 case Tag_ABI_PCS_RO_data
:
6102 /* Use the smallest value specified. */
6103 if (in_attr
[i
].i
< out_attr
[i
].i
)
6104 out_attr
[i
].i
= in_attr
[i
].i
;
6106 case Tag_ABI_PCS_GOT_use
:
6107 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
6108 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
6109 out_attr
[i
].i
= in_attr
[i
].i
;
6111 case Tag_ABI_PCS_wchar_t
:
6112 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
)
6115 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd
);
6119 out_attr
[i
].i
= in_attr
[i
].i
;
6121 case Tag_ABI_align8_needed
:
6122 /* ??? Check against Tag_ABI_align8_preserved. */
6123 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
6124 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
6125 out_attr
[i
].i
= in_attr
[i
].i
;
6127 case Tag_ABI_enum_size
:
6128 if (in_attr
[i
].i
!= AEABI_enum_unused
)
6130 if (out_attr
[i
].i
== AEABI_enum_unused
6131 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
6133 /* The existing object is compatible with anything.
6134 Use whatever requirements the new object has. */
6135 out_attr
[i
].i
= in_attr
[i
].i
;
6137 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
6138 && out_attr
[i
].i
!= in_attr
[i
].i
)
6141 (_("ERROR: %B: Conflicting enum sizes"), ibfd
);
6145 case Tag_ABI_VFP_args
:
6148 case Tag_ABI_WMMX_args
:
6149 if (in_attr
[i
].i
!= out_attr
[i
].i
)
6152 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
6157 default: /* All known attributes should be explicitly covered. */
6162 in_list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
6163 out_list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
6164 while (in_list
&& in_list
->tag
== Tag_compatibility
)
6166 in_attr
= &in_list
->attr
;
6167 if (in_attr
->i
== 0)
6169 if (in_attr
->i
== 1)
6172 (_("ERROR: %B: Must be processed by '%s' toolchain"),
6176 if (!out_list
|| out_list
->tag
!= Tag_compatibility
6177 || strcmp (in_attr
->s
, out_list
->attr
.s
) != 0)
6179 /* Add this compatibility tag to the output. */
6180 elf32_arm_add_eabi_attr_compat (obfd
, in_attr
->i
, in_attr
->s
);
6183 out_attr
= &out_list
->attr
;
6184 /* Check all the input tags with the same identifier. */
6187 if (out_list
->tag
!= Tag_compatibility
6188 || in_attr
->i
!= out_attr
->i
6189 || strcmp (in_attr
->s
, out_attr
->s
) != 0)
6192 (_("ERROR: %B: Incompatible object tag '%s':%d"),
6193 ibfd
, in_attr
->s
, in_attr
->i
);
6196 in_list
= in_list
->next
;
6197 if (in_list
->tag
!= Tag_compatibility
6198 || strcmp (in_attr
->s
, in_list
->attr
.s
) != 0)
6200 in_attr
= &in_list
->attr
;
6201 out_list
= out_list
->next
;
6203 out_attr
= &out_list
->attr
;
6206 /* Check the output doesn't have extra tags with this identifier. */
6207 if (out_list
&& out_list
->tag
== Tag_compatibility
6208 && strcmp (in_attr
->s
, out_list
->attr
.s
) == 0)
6211 (_("ERROR: %B: Incompatible object tag '%s':%d"),
6212 ibfd
, in_attr
->s
, out_list
->attr
.i
);
6217 for (; in_list
; in_list
= in_list
->next
)
6219 if ((in_list
->tag
& 128) < 64)
6222 (_("Warning: %B: Unknown EABI object attribute %d"),
6223 ibfd
, in_list
->tag
);
6231 /* Return TRUE if the two EABI versions are incompatible. */
6234 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
6236 /* v4 and v5 are the same spec before and after it was released,
6237 so allow mixing them. */
6238 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
6239 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
6242 return (iver
== over
);
6245 /* Merge backend specific data from an object file to the output
6246 object file when linking. */
6249 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
6253 bfd_boolean flags_compatible
= TRUE
;
6256 /* Check if we have the same endianess. */
6257 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
6260 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
6261 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
6264 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
6267 /* The input BFD must have had its flags initialised. */
6268 /* The following seems bogus to me -- The flags are initialized in
6269 the assembler but I don't think an elf_flags_init field is
6270 written into the object. */
6271 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6273 in_flags
= elf_elfheader (ibfd
)->e_flags
;
6274 out_flags
= elf_elfheader (obfd
)->e_flags
;
6276 if (!elf_flags_init (obfd
))
6278 /* If the input is the default architecture and had the default
6279 flags then do not bother setting the flags for the output
6280 architecture, instead allow future merges to do this. If no
6281 future merges ever set these flags then they will retain their
6282 uninitialised values, which surprise surprise, correspond
6283 to the default values. */
6284 if (bfd_get_arch_info (ibfd
)->the_default
6285 && elf_elfheader (ibfd
)->e_flags
== 0)
6288 elf_flags_init (obfd
) = TRUE
;
6289 elf_elfheader (obfd
)->e_flags
= in_flags
;
6291 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
6292 && bfd_get_arch_info (obfd
)->the_default
)
6293 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
6298 /* Determine what should happen if the input ARM architecture
6299 does not match the output ARM architecture. */
6300 if (! bfd_arm_merge_machines (ibfd
, obfd
))
6303 /* Identical flags must be compatible. */
6304 if (in_flags
== out_flags
)
6307 /* Check to see if the input BFD actually contains any sections. If
6308 not, its flags may not have been initialised either, but it
6309 cannot actually cause any incompatiblity. Do not short-circuit
6310 dynamic objects; their section list may be emptied by
6311 elf_link_add_object_symbols.
6313 Also check to see if there are no code sections in the input.
6314 In this case there is no need to check for code specific flags.
6315 XXX - do we need to worry about floating-point format compatability
6316 in data sections ? */
6317 if (!(ibfd
->flags
& DYNAMIC
))
6319 bfd_boolean null_input_bfd
= TRUE
;
6320 bfd_boolean only_data_sections
= TRUE
;
6322 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6324 /* Ignore synthetic glue sections. */
6325 if (strcmp (sec
->name
, ".glue_7")
6326 && strcmp (sec
->name
, ".glue_7t"))
6328 if ((bfd_get_section_flags (ibfd
, sec
)
6329 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
6330 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
6331 only_data_sections
= FALSE
;
6333 null_input_bfd
= FALSE
;
6338 if (null_input_bfd
|| only_data_sections
)
6342 /* Complain about various flag mismatches. */
6343 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
6344 EF_ARM_EABI_VERSION (out_flags
)))
6347 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
6349 (in_flags
& EF_ARM_EABIMASK
) >> 24,
6350 (out_flags
& EF_ARM_EABIMASK
) >> 24);
6354 /* Not sure what needs to be checked for EABI versions >= 1. */
6355 /* VxWorks libraries do not use these flags. */
6356 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
6357 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
6358 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
6360 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
6363 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
6365 in_flags
& EF_ARM_APCS_26
? 26 : 32,
6366 out_flags
& EF_ARM_APCS_26
? 26 : 32);
6367 flags_compatible
= FALSE
;
6370 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
6372 if (in_flags
& EF_ARM_APCS_FLOAT
)
6374 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
6378 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
6381 flags_compatible
= FALSE
;
6384 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
6386 if (in_flags
& EF_ARM_VFP_FLOAT
)
6388 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
6392 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
6395 flags_compatible
= FALSE
;
6398 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
6400 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
6402 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
6406 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
6409 flags_compatible
= FALSE
;
6412 #ifdef EF_ARM_SOFT_FLOAT
6413 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
6415 /* We can allow interworking between code that is VFP format
6416 layout, and uses either soft float or integer regs for
6417 passing floating point arguments and results. We already
6418 know that the APCS_FLOAT flags match; similarly for VFP
6420 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
6421 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
6423 if (in_flags
& EF_ARM_SOFT_FLOAT
)
6425 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
6429 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
6432 flags_compatible
= FALSE
;
6437 /* Interworking mismatch is only a warning. */
6438 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
6440 if (in_flags
& EF_ARM_INTERWORK
)
6443 (_("Warning: %B supports interworking, whereas %B does not"),
6449 (_("Warning: %B does not support interworking, whereas %B does"),
6455 return flags_compatible
;
6458 /* Display the flags field. */
6461 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
6463 FILE * file
= (FILE *) ptr
;
6464 unsigned long flags
;
6466 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
6468 /* Print normal ELF private data. */
6469 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6471 flags
= elf_elfheader (abfd
)->e_flags
;
6472 /* Ignore init flag - it may not be set, despite the flags field
6473 containing valid data. */
6475 /* xgettext:c-format */
6476 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
6478 switch (EF_ARM_EABI_VERSION (flags
))
6480 case EF_ARM_EABI_UNKNOWN
:
6481 /* The following flag bits are GNU extensions and not part of the
6482 official ARM ELF extended ABI. Hence they are only decoded if
6483 the EABI version is not set. */
6484 if (flags
& EF_ARM_INTERWORK
)
6485 fprintf (file
, _(" [interworking enabled]"));
6487 if (flags
& EF_ARM_APCS_26
)
6488 fprintf (file
, " [APCS-26]");
6490 fprintf (file
, " [APCS-32]");
6492 if (flags
& EF_ARM_VFP_FLOAT
)
6493 fprintf (file
, _(" [VFP float format]"));
6494 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
6495 fprintf (file
, _(" [Maverick float format]"));
6497 fprintf (file
, _(" [FPA float format]"));
6499 if (flags
& EF_ARM_APCS_FLOAT
)
6500 fprintf (file
, _(" [floats passed in float registers]"));
6502 if (flags
& EF_ARM_PIC
)
6503 fprintf (file
, _(" [position independent]"));
6505 if (flags
& EF_ARM_NEW_ABI
)
6506 fprintf (file
, _(" [new ABI]"));
6508 if (flags
& EF_ARM_OLD_ABI
)
6509 fprintf (file
, _(" [old ABI]"));
6511 if (flags
& EF_ARM_SOFT_FLOAT
)
6512 fprintf (file
, _(" [software FP]"));
6514 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
6515 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
6516 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
6517 | EF_ARM_MAVERICK_FLOAT
);
6520 case EF_ARM_EABI_VER1
:
6521 fprintf (file
, _(" [Version1 EABI]"));
6523 if (flags
& EF_ARM_SYMSARESORTED
)
6524 fprintf (file
, _(" [sorted symbol table]"));
6526 fprintf (file
, _(" [unsorted symbol table]"));
6528 flags
&= ~ EF_ARM_SYMSARESORTED
;
6531 case EF_ARM_EABI_VER2
:
6532 fprintf (file
, _(" [Version2 EABI]"));
6534 if (flags
& EF_ARM_SYMSARESORTED
)
6535 fprintf (file
, _(" [sorted symbol table]"));
6537 fprintf (file
, _(" [unsorted symbol table]"));
6539 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
6540 fprintf (file
, _(" [dynamic symbols use segment index]"));
6542 if (flags
& EF_ARM_MAPSYMSFIRST
)
6543 fprintf (file
, _(" [mapping symbols precede others]"));
6545 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
6546 | EF_ARM_MAPSYMSFIRST
);
6549 case EF_ARM_EABI_VER3
:
6550 fprintf (file
, _(" [Version3 EABI]"));
6553 case EF_ARM_EABI_VER4
:
6554 fprintf (file
, _(" [Version4 EABI]"));
6557 case EF_ARM_EABI_VER5
:
6558 fprintf (file
, _(" [Version5 EABI]"));
6560 if (flags
& EF_ARM_BE8
)
6561 fprintf (file
, _(" [BE8]"));
6563 if (flags
& EF_ARM_LE8
)
6564 fprintf (file
, _(" [LE8]"));
6566 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
6570 fprintf (file
, _(" <EABI version unrecognised>"));
6574 flags
&= ~ EF_ARM_EABIMASK
;
6576 if (flags
& EF_ARM_RELEXEC
)
6577 fprintf (file
, _(" [relocatable executable]"));
6579 if (flags
& EF_ARM_HASENTRY
)
6580 fprintf (file
, _(" [has entry point]"));
6582 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
6585 fprintf (file
, _("<Unrecognised flag bits set>"));
6593 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
6595 switch (ELF_ST_TYPE (elf_sym
->st_info
))
6598 return ELF_ST_TYPE (elf_sym
->st_info
);
6601 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
6602 This allows us to distinguish between data used by Thumb instructions
6603 and non-data (which is probably code) inside Thumb regions of an
6605 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
6606 return ELF_ST_TYPE (elf_sym
->st_info
);
6617 elf32_arm_gc_mark_hook (asection
* sec
,
6618 struct bfd_link_info
* info ATTRIBUTE_UNUSED
,
6619 Elf_Internal_Rela
* rel
,
6620 struct elf_link_hash_entry
* h
,
6621 Elf_Internal_Sym
* sym
)
6625 switch (ELF32_R_TYPE (rel
->r_info
))
6627 case R_ARM_GNU_VTINHERIT
:
6628 case R_ARM_GNU_VTENTRY
:
6632 switch (h
->root
.type
)
6634 case bfd_link_hash_defined
:
6635 case bfd_link_hash_defweak
:
6636 return h
->root
.u
.def
.section
;
6638 case bfd_link_hash_common
:
6639 return h
->root
.u
.c
.p
->section
;
6647 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6652 /* Update the got entry reference counts for the section being removed. */
6655 elf32_arm_gc_sweep_hook (bfd
* abfd
,
6656 struct bfd_link_info
* info
,
6658 const Elf_Internal_Rela
* relocs
)
6660 Elf_Internal_Shdr
*symtab_hdr
;
6661 struct elf_link_hash_entry
**sym_hashes
;
6662 bfd_signed_vma
*local_got_refcounts
;
6663 const Elf_Internal_Rela
*rel
, *relend
;
6664 struct elf32_arm_link_hash_table
* globals
;
6666 globals
= elf32_arm_hash_table (info
);
6668 elf_section_data (sec
)->local_dynrel
= NULL
;
6670 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
6671 sym_hashes
= elf_sym_hashes (abfd
);
6672 local_got_refcounts
= elf_local_got_refcounts (abfd
);
6674 relend
= relocs
+ sec
->reloc_count
;
6675 for (rel
= relocs
; rel
< relend
; rel
++)
6677 unsigned long r_symndx
;
6678 struct elf_link_hash_entry
*h
= NULL
;
6681 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6682 if (r_symndx
>= symtab_hdr
->sh_info
)
6684 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6685 while (h
->root
.type
== bfd_link_hash_indirect
6686 || h
->root
.type
== bfd_link_hash_warning
)
6687 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6690 r_type
= ELF32_R_TYPE (rel
->r_info
);
6691 r_type
= arm_real_reloc_type (globals
, r_type
);
6695 case R_ARM_GOT_PREL
:
6696 case R_ARM_TLS_GD32
:
6697 case R_ARM_TLS_IE32
:
6700 if (h
->got
.refcount
> 0)
6701 h
->got
.refcount
-= 1;
6703 else if (local_got_refcounts
!= NULL
)
6705 if (local_got_refcounts
[r_symndx
] > 0)
6706 local_got_refcounts
[r_symndx
] -= 1;
6710 case R_ARM_TLS_LDM32
:
6711 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
6721 case R_ARM_THM_CALL
:
6722 case R_ARM_MOVW_ABS_NC
:
6723 case R_ARM_MOVT_ABS
:
6724 case R_ARM_MOVW_PREL_NC
:
6725 case R_ARM_MOVT_PREL
:
6726 case R_ARM_THM_MOVW_ABS_NC
:
6727 case R_ARM_THM_MOVT_ABS
:
6728 case R_ARM_THM_MOVW_PREL_NC
:
6729 case R_ARM_THM_MOVT_PREL
:
6730 /* Should the interworking branches be here also? */
6734 struct elf32_arm_link_hash_entry
*eh
;
6735 struct elf32_arm_relocs_copied
**pp
;
6736 struct elf32_arm_relocs_copied
*p
;
6738 eh
= (struct elf32_arm_link_hash_entry
*) h
;
6740 if (h
->plt
.refcount
> 0)
6742 h
->plt
.refcount
-= 1;
6743 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_THM_CALL
)
6744 eh
->plt_thumb_refcount
--;
6747 if (r_type
== R_ARM_ABS32
6748 || r_type
== R_ARM_REL32
)
6750 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
6752 if (p
->section
== sec
)
6755 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
)
6773 /* Look through the relocs for a section during the first phase. */
6776 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
6777 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6779 Elf_Internal_Shdr
*symtab_hdr
;
6780 struct elf_link_hash_entry
**sym_hashes
;
6781 struct elf_link_hash_entry
**sym_hashes_end
;
6782 const Elf_Internal_Rela
*rel
;
6783 const Elf_Internal_Rela
*rel_end
;
6786 bfd_vma
*local_got_offsets
;
6787 struct elf32_arm_link_hash_table
*htab
;
6789 if (info
->relocatable
)
6792 htab
= elf32_arm_hash_table (info
);
6795 /* Create dynamic sections for relocatable executables so that we can
6796 copy relocations. */
6797 if (htab
->root
.is_relocatable_executable
6798 && ! htab
->root
.dynamic_sections_created
)
6800 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
6804 dynobj
= elf_hash_table (info
)->dynobj
;
6805 local_got_offsets
= elf_local_got_offsets (abfd
);
6807 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
6808 sym_hashes
= elf_sym_hashes (abfd
);
6809 sym_hashes_end
= sym_hashes
6810 + symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
);
6812 if (!elf_bad_symtab (abfd
))
6813 sym_hashes_end
-= symtab_hdr
->sh_info
;
6815 rel_end
= relocs
+ sec
->reloc_count
;
6816 for (rel
= relocs
; rel
< rel_end
; rel
++)
6818 struct elf_link_hash_entry
*h
;
6819 struct elf32_arm_link_hash_entry
*eh
;
6820 unsigned long r_symndx
;
6823 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6824 r_type
= ELF32_R_TYPE (rel
->r_info
);
6825 r_type
= arm_real_reloc_type (htab
, r_type
);
6827 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
6829 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
6834 if (r_symndx
< symtab_hdr
->sh_info
)
6838 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6839 while (h
->root
.type
== bfd_link_hash_indirect
6840 || h
->root
.type
== bfd_link_hash_warning
)
6841 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6844 eh
= (struct elf32_arm_link_hash_entry
*) h
;
6849 case R_ARM_GOT_PREL
:
6850 case R_ARM_TLS_GD32
:
6851 case R_ARM_TLS_IE32
:
6852 /* This symbol requires a global offset table entry. */
6854 int tls_type
, old_tls_type
;
6858 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
6859 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
6860 default: tls_type
= GOT_NORMAL
; break;
6866 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
6870 bfd_signed_vma
*local_got_refcounts
;
6872 /* This is a global offset table entry for a local symbol. */
6873 local_got_refcounts
= elf_local_got_refcounts (abfd
);
6874 if (local_got_refcounts
== NULL
)
6878 size
= symtab_hdr
->sh_info
;
6879 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
6880 local_got_refcounts
= bfd_zalloc (abfd
, size
);
6881 if (local_got_refcounts
== NULL
)
6883 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
6884 elf32_arm_local_got_tls_type (abfd
)
6885 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
6887 local_got_refcounts
[r_symndx
] += 1;
6888 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
6891 /* We will already have issued an error message if there is a
6892 TLS / non-TLS mismatch, based on the symbol type. We don't
6893 support any linker relaxations. So just combine any TLS
6895 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
6896 && tls_type
!= GOT_NORMAL
)
6897 tls_type
|= old_tls_type
;
6899 if (old_tls_type
!= tls_type
)
6902 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
6904 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
6909 case R_ARM_TLS_LDM32
:
6910 if (r_type
== R_ARM_TLS_LDM32
)
6911 htab
->tls_ldm_got
.refcount
++;
6914 case R_ARM_GOTOFF32
:
6916 if (htab
->sgot
== NULL
)
6918 if (htab
->root
.dynobj
== NULL
)
6919 htab
->root
.dynobj
= abfd
;
6920 if (!create_got_section (htab
->root
.dynobj
, info
))
6926 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
6927 ldr __GOTT_INDEX__ offsets. */
6928 if (!htab
->vxworks_p
)
6939 case R_ARM_THM_CALL
:
6940 case R_ARM_MOVW_ABS_NC
:
6941 case R_ARM_MOVT_ABS
:
6942 case R_ARM_MOVW_PREL_NC
:
6943 case R_ARM_MOVT_PREL
:
6944 case R_ARM_THM_MOVW_ABS_NC
:
6945 case R_ARM_THM_MOVT_ABS
:
6946 case R_ARM_THM_MOVW_PREL_NC
:
6947 case R_ARM_THM_MOVT_PREL
:
6948 /* Should the interworking branches be listed here? */
6951 /* If this reloc is in a read-only section, we might
6952 need a copy reloc. We can't check reliably at this
6953 stage whether the section is read-only, as input
6954 sections have not yet been mapped to output sections.
6955 Tentatively set the flag for now, and correct in
6956 adjust_dynamic_symbol. */
6960 /* We may need a .plt entry if the function this reloc
6961 refers to is in a different object. We can't tell for
6962 sure yet, because something later might force the
6964 if (r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
)
6967 /* If we create a PLT entry, this relocation will reference
6968 it, even if it's an ABS32 relocation. */
6969 h
->plt
.refcount
+= 1;
6971 if (r_type
== R_ARM_THM_CALL
)
6972 eh
->plt_thumb_refcount
+= 1;
6975 /* If we are creating a shared library or relocatable executable,
6976 and this is a reloc against a global symbol, or a non PC
6977 relative reloc against a local symbol, then we need to copy
6978 the reloc into the shared library. However, if we are linking
6979 with -Bsymbolic, we do not need to copy a reloc against a
6980 global symbol which is defined in an object we are
6981 including in the link (i.e., DEF_REGULAR is set). At
6982 this point we have not seen all the input files, so it is
6983 possible that DEF_REGULAR is not set now but will be set
6984 later (it is never cleared). We account for that
6985 possibility below by storing information in the
6986 relocs_copied field of the hash table entry. */
6987 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
6988 && (sec
->flags
& SEC_ALLOC
) != 0
6989 && (r_type
== R_ARM_ABS32
6990 || (h
!= NULL
&& ! h
->needs_plt
6991 && (! info
->symbolic
|| ! h
->def_regular
))))
6993 struct elf32_arm_relocs_copied
*p
, **head
;
6995 /* When creating a shared object, we must copy these
6996 reloc types into the output file. We create a reloc
6997 section in dynobj and make room for this reloc. */
7002 name
= (bfd_elf_string_from_elf_section
7004 elf_elfheader (abfd
)->e_shstrndx
,
7005 elf_section_data (sec
)->rel_hdr
.sh_name
));
7009 BFD_ASSERT (reloc_section_p (htab
, name
, sec
));
7011 sreloc
= bfd_get_section_by_name (dynobj
, name
);
7016 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
7017 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
7018 if ((sec
->flags
& SEC_ALLOC
) != 0
7019 /* BPABI objects never have dynamic
7020 relocations mapped. */
7021 && !htab
->symbian_p
)
7022 flags
|= SEC_ALLOC
| SEC_LOAD
;
7023 sreloc
= bfd_make_section_with_flags (dynobj
,
7027 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
7031 elf_section_data (sec
)->sreloc
= sreloc
;
7034 /* If this is a global symbol, we count the number of
7035 relocations we need for this symbol. */
7038 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
7042 /* Track dynamic relocs needed for local syms too.
7043 We really need local syms available to do this
7049 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
7054 vpp
= &elf_section_data (s
)->local_dynrel
;
7055 head
= (struct elf32_arm_relocs_copied
**) vpp
;
7059 if (p
== NULL
|| p
->section
!= sec
)
7061 bfd_size_type amt
= sizeof *p
;
7063 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
7073 if (r_type
== R_ARM_REL32
)
7079 /* This relocation describes the C++ object vtable hierarchy.
7080 Reconstruct it for later use during GC. */
7081 case R_ARM_GNU_VTINHERIT
:
7082 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
7086 /* This relocation describes which C++ vtable entries are actually
7087 used. Record for later use during GC. */
7088 case R_ARM_GNU_VTENTRY
:
7089 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
7098 /* Treat mapping symbols as special target symbols. */
7101 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
7103 return bfd_is_arm_special_symbol_name (sym
->name
,
7104 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
7107 /* This is a copy of elf_find_function() from elf.c except that
7108 ARM mapping symbols are ignored when looking for function names
7109 and STT_ARM_TFUNC is considered to a function type. */
7112 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
7116 const char ** filename_ptr
,
7117 const char ** functionname_ptr
)
7119 const char * filename
= NULL
;
7120 asymbol
* func
= NULL
;
7121 bfd_vma low_func
= 0;
7124 for (p
= symbols
; *p
!= NULL
; p
++)
7128 q
= (elf_symbol_type
*) *p
;
7130 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
7135 filename
= bfd_asymbol_name (&q
->symbol
);
7140 /* Skip mapping symbols. */
7141 if ((q
->symbol
.flags
& BSF_LOCAL
)
7142 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
7143 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
7146 if (bfd_get_section (&q
->symbol
) == section
7147 && q
->symbol
.value
>= low_func
7148 && q
->symbol
.value
<= offset
)
7150 func
= (asymbol
*) q
;
7151 low_func
= q
->symbol
.value
;
7161 *filename_ptr
= filename
;
7162 if (functionname_ptr
)
7163 *functionname_ptr
= bfd_asymbol_name (func
);
7169 /* Find the nearest line to a particular section and offset, for error
7170 reporting. This code is a duplicate of the code in elf.c, except
7171 that it uses arm_elf_find_function. */
7174 elf32_arm_find_nearest_line (bfd
* abfd
,
7178 const char ** filename_ptr
,
7179 const char ** functionname_ptr
,
7180 unsigned int * line_ptr
)
7182 bfd_boolean found
= FALSE
;
7184 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
7186 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
7187 filename_ptr
, functionname_ptr
,
7189 & elf_tdata (abfd
)->dwarf2_find_line_info
))
7191 if (!*functionname_ptr
)
7192 arm_elf_find_function (abfd
, section
, symbols
, offset
,
7193 *filename_ptr
? NULL
: filename_ptr
,
7199 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
7200 & found
, filename_ptr
,
7201 functionname_ptr
, line_ptr
,
7202 & elf_tdata (abfd
)->line_info
))
7205 if (found
&& (*functionname_ptr
|| *line_ptr
))
7208 if (symbols
== NULL
)
7211 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
7212 filename_ptr
, functionname_ptr
))
7220 elf32_arm_find_inliner_info (bfd
* abfd
,
7221 const char ** filename_ptr
,
7222 const char ** functionname_ptr
,
7223 unsigned int * line_ptr
)
7226 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
7227 functionname_ptr
, line_ptr
,
7228 & elf_tdata (abfd
)->dwarf2_find_line_info
);
7232 /* Adjust a symbol defined by a dynamic object and referenced by a
7233 regular object. The current definition is in some section of the
7234 dynamic object, but we're not including those sections. We have to
7235 change the definition to something the rest of the link can
7239 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
7240 struct elf_link_hash_entry
* h
)
7244 unsigned int power_of_two
;
7245 struct elf32_arm_link_hash_entry
* eh
;
7246 struct elf32_arm_link_hash_table
*globals
;
7248 globals
= elf32_arm_hash_table (info
);
7249 dynobj
= elf_hash_table (info
)->dynobj
;
7251 /* Make sure we know what is going on here. */
7252 BFD_ASSERT (dynobj
!= NULL
7254 || h
->u
.weakdef
!= NULL
7257 && !h
->def_regular
)));
7259 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7261 /* If this is a function, put it in the procedure linkage table. We
7262 will fill in the contents of the procedure linkage table later,
7263 when we know the address of the .got section. */
7264 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
7267 if (h
->plt
.refcount
<= 0
7268 || SYMBOL_CALLS_LOCAL (info
, h
)
7269 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7270 && h
->root
.type
== bfd_link_hash_undefweak
))
7272 /* This case can occur if we saw a PLT32 reloc in an input
7273 file, but the symbol was never referred to by a dynamic
7274 object, or if all references were garbage collected. In
7275 such a case, we don't actually need to build a procedure
7276 linkage table, and we can just do a PC24 reloc instead. */
7277 h
->plt
.offset
= (bfd_vma
) -1;
7278 eh
->plt_thumb_refcount
= 0;
7286 /* It's possible that we incorrectly decided a .plt reloc was
7287 needed for an R_ARM_PC24 or similar reloc to a non-function sym
7288 in check_relocs. We can't decide accurately between function
7289 and non-function syms in check-relocs; Objects loaded later in
7290 the link may change h->type. So fix it now. */
7291 h
->plt
.offset
= (bfd_vma
) -1;
7292 eh
->plt_thumb_refcount
= 0;
7295 /* If this is a weak symbol, and there is a real definition, the
7296 processor independent code will have arranged for us to see the
7297 real definition first, and we can just use the same value. */
7298 if (h
->u
.weakdef
!= NULL
)
7300 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7301 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7302 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7303 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7307 /* If there are no non-GOT references, we do not need a copy
7309 if (!h
->non_got_ref
)
7312 /* This is a reference to a symbol defined by a dynamic object which
7313 is not a function. */
7315 /* If we are creating a shared library, we must presume that the
7316 only references to the symbol are via the global offset table.
7317 For such cases we need not do anything here; the relocations will
7318 be handled correctly by relocate_section. Relocatable executables
7319 can reference data in shared objects directly, so we don't need to
7320 do anything here. */
7321 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
7326 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
7327 h
->root
.root
.string
);
7331 /* We must allocate the symbol in our .dynbss section, which will
7332 become part of the .bss section of the executable. There will be
7333 an entry for this symbol in the .dynsym section. The dynamic
7334 object will contain position independent code, so all references
7335 from the dynamic object to this symbol will go through the global
7336 offset table. The dynamic linker will use the .dynsym entry to
7337 determine the address it must put in the global offset table, so
7338 both the dynamic object and the regular object will refer to the
7339 same memory location for the variable. */
7340 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
7341 BFD_ASSERT (s
!= NULL
);
7343 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
7344 copy the initial value out of the dynamic object and into the
7345 runtime process image. We need to remember the offset into the
7346 .rel(a).bss section we are going to use. */
7347 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
7351 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
7352 BFD_ASSERT (srel
!= NULL
);
7353 srel
->size
+= RELOC_SIZE (globals
);
7357 /* We need to figure out the alignment required for this symbol. I
7358 have no idea how ELF linkers handle this. */
7359 power_of_two
= bfd_log2 (h
->size
);
7360 if (power_of_two
> 3)
7363 /* Apply the required alignment. */
7364 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
7365 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
7367 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
7371 /* Define the symbol as being at this point in the section. */
7372 h
->root
.u
.def
.section
= s
;
7373 h
->root
.u
.def
.value
= s
->size
;
7375 /* Increment the section size to make room for the symbol. */
7381 /* Allocate space in .plt, .got and associated reloc sections for
7385 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
7387 struct bfd_link_info
*info
;
7388 struct elf32_arm_link_hash_table
*htab
;
7389 struct elf32_arm_link_hash_entry
*eh
;
7390 struct elf32_arm_relocs_copied
*p
;
7392 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7394 if (h
->root
.type
== bfd_link_hash_indirect
)
7397 if (h
->root
.type
== bfd_link_hash_warning
)
7398 /* When warning symbols are created, they **replace** the "real"
7399 entry in the hash table, thus we never get to see the real
7400 symbol in a hash traversal. So look at it now. */
7401 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7403 info
= (struct bfd_link_info
*) inf
;
7404 htab
= elf32_arm_hash_table (info
);
7406 if (htab
->root
.dynamic_sections_created
7407 && h
->plt
.refcount
> 0)
7409 /* Make sure this symbol is output as a dynamic symbol.
7410 Undefined weak syms won't yet be marked as dynamic. */
7411 if (h
->dynindx
== -1
7412 && !h
->forced_local
)
7414 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7419 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
7421 asection
*s
= htab
->splt
;
7423 /* If this is the first .plt entry, make room for the special
7426 s
->size
+= htab
->plt_header_size
;
7428 h
->plt
.offset
= s
->size
;
7430 /* If we will insert a Thumb trampoline before this PLT, leave room
7432 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
7434 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
7435 s
->size
+= PLT_THUMB_STUB_SIZE
;
7438 /* If this symbol is not defined in a regular file, and we are
7439 not generating a shared library, then set the symbol to this
7440 location in the .plt. This is required to make function
7441 pointers compare as equal between the normal executable and
7442 the shared library. */
7446 h
->root
.u
.def
.section
= s
;
7447 h
->root
.u
.def
.value
= h
->plt
.offset
;
7449 /* Make sure the function is not marked as Thumb, in case
7450 it is the target of an ABS32 relocation, which will
7451 point to the PLT entry. */
7452 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
7453 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
7456 /* Make room for this entry. */
7457 s
->size
+= htab
->plt_entry_size
;
7459 if (!htab
->symbian_p
)
7461 /* We also need to make an entry in the .got.plt section, which
7462 will be placed in the .got section by the linker script. */
7463 eh
->plt_got_offset
= htab
->sgotplt
->size
;
7464 htab
->sgotplt
->size
+= 4;
7467 /* We also need to make an entry in the .rel(a).plt section. */
7468 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
7470 /* VxWorks executables have a second set of relocations for
7471 each PLT entry. They go in a separate relocation section,
7472 which is processed by the kernel loader. */
7473 if (htab
->vxworks_p
&& !info
->shared
)
7475 /* There is a relocation for the initial PLT entry:
7476 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
7477 if (h
->plt
.offset
== htab
->plt_header_size
)
7478 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
7480 /* There are two extra relocations for each subsequent
7481 PLT entry: an R_ARM_32 relocation for the GOT entry,
7482 and an R_ARM_32 relocation for the PLT entry. */
7483 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
7488 h
->plt
.offset
= (bfd_vma
) -1;
7494 h
->plt
.offset
= (bfd_vma
) -1;
7498 if (h
->got
.refcount
> 0)
7502 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
7505 /* Make sure this symbol is output as a dynamic symbol.
7506 Undefined weak syms won't yet be marked as dynamic. */
7507 if (h
->dynindx
== -1
7508 && !h
->forced_local
)
7510 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7514 if (!htab
->symbian_p
)
7517 h
->got
.offset
= s
->size
;
7519 if (tls_type
== GOT_UNKNOWN
)
7522 if (tls_type
== GOT_NORMAL
)
7523 /* Non-TLS symbols need one GOT slot. */
7527 if (tls_type
& GOT_TLS_GD
)
7528 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
7530 if (tls_type
& GOT_TLS_IE
)
7531 /* R_ARM_TLS_IE32 needs one GOT slot. */
7535 dyn
= htab
->root
.dynamic_sections_created
;
7538 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
7540 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
7543 if (tls_type
!= GOT_NORMAL
7544 && (info
->shared
|| indx
!= 0)
7545 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7546 || h
->root
.type
!= bfd_link_hash_undefweak
))
7548 if (tls_type
& GOT_TLS_IE
)
7549 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7551 if (tls_type
& GOT_TLS_GD
)
7552 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7554 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
7555 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7557 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7558 || h
->root
.type
!= bfd_link_hash_undefweak
)
7560 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
7561 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7565 h
->got
.offset
= (bfd_vma
) -1;
7567 /* Allocate stubs for exported Thumb functions on v4t. */
7568 if (!htab
->use_blx
&& h
->dynindx
!= -1
7569 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
7570 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
7572 struct elf_link_hash_entry
* th
;
7573 struct bfd_link_hash_entry
* bh
;
7574 struct elf_link_hash_entry
* myh
;
7578 /* Create a new symbol to regist the real location of the function. */
7579 s
= h
->root
.u
.def
.section
;
7580 sprintf(name
, "__real_%s", h
->root
.root
.string
);
7581 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
7582 name
, BSF_GLOBAL
, s
,
7583 h
->root
.u
.def
.value
,
7584 NULL
, TRUE
, FALSE
, &bh
);
7586 myh
= (struct elf_link_hash_entry
*) bh
;
7587 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
7588 myh
->forced_local
= 1;
7589 eh
->export_glue
= myh
;
7590 th
= record_arm_to_thumb_glue (info
, h
);
7591 /* Point the symbol at the stub. */
7592 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
7593 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
7594 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
7597 if (eh
->relocs_copied
== NULL
)
7600 /* In the shared -Bsymbolic case, discard space allocated for
7601 dynamic pc-relative relocs against symbols which turn out to be
7602 defined in regular objects. For the normal shared case, discard
7603 space for pc-relative relocs that have become local due to symbol
7604 visibility changes. */
7606 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
7608 /* The only reloc that uses pc_count is R_ARM_REL32, which will
7609 appear on something like ".long foo - .". We want calls to
7610 protected symbols to resolve directly to the function rather
7611 than going via the plt. If people want function pointer
7612 comparisons to work as expected then they should avoid
7613 writing assembly like ".long foo - .". */
7614 if (SYMBOL_CALLS_LOCAL (info
, h
))
7616 struct elf32_arm_relocs_copied
**pp
;
7618 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
7620 p
->count
-= p
->pc_count
;
7629 /* Also discard relocs on undefined weak syms with non-default
7631 if (eh
->relocs_copied
!= NULL
7632 && h
->root
.type
== bfd_link_hash_undefweak
)
7634 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
7635 eh
->relocs_copied
= NULL
;
7637 /* Make sure undefined weak symbols are output as a dynamic
7639 else if (h
->dynindx
== -1
7640 && !h
->forced_local
)
7642 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7647 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
7648 && h
->root
.type
== bfd_link_hash_new
)
7650 /* Output absolute symbols so that we can create relocations
7651 against them. For normal symbols we output a relocation
7652 against the section that contains them. */
7653 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7660 /* For the non-shared case, discard space for relocs against
7661 symbols which turn out to need copy relocs or are not
7667 || (htab
->root
.dynamic_sections_created
7668 && (h
->root
.type
== bfd_link_hash_undefweak
7669 || h
->root
.type
== bfd_link_hash_undefined
))))
7671 /* Make sure this symbol is output as a dynamic symbol.
7672 Undefined weak syms won't yet be marked as dynamic. */
7673 if (h
->dynindx
== -1
7674 && !h
->forced_local
)
7676 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7680 /* If that succeeded, we know we'll be keeping all the
7682 if (h
->dynindx
!= -1)
7686 eh
->relocs_copied
= NULL
;
7691 /* Finally, allocate space. */
7692 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
7694 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
7695 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
7701 /* Find any dynamic relocs that apply to read-only sections. */
7704 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
*h
, PTR inf
)
7706 struct elf32_arm_link_hash_entry
*eh
;
7707 struct elf32_arm_relocs_copied
*p
;
7709 if (h
->root
.type
== bfd_link_hash_warning
)
7710 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7712 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7713 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
7715 asection
*s
= p
->section
;
7717 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7719 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
7721 info
->flags
|= DF_TEXTREL
;
7723 /* Not an error, just cut short the traversal. */
7730 /* Set the sizes of the dynamic sections. */
7733 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
7734 struct bfd_link_info
* info
)
7741 struct elf32_arm_link_hash_table
*htab
;
7743 htab
= elf32_arm_hash_table (info
);
7744 dynobj
= elf_hash_table (info
)->dynobj
;
7745 BFD_ASSERT (dynobj
!= NULL
);
7746 check_use_blx (htab
);
7748 if (elf_hash_table (info
)->dynamic_sections_created
)
7750 /* Set the contents of the .interp section to the interpreter. */
7751 if (info
->executable
)
7753 s
= bfd_get_section_by_name (dynobj
, ".interp");
7754 BFD_ASSERT (s
!= NULL
);
7755 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
7756 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
7760 /* Set up .got offsets for local syms, and space for local dynamic
7762 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7764 bfd_signed_vma
*local_got
;
7765 bfd_signed_vma
*end_local_got
;
7766 char *local_tls_type
;
7767 bfd_size_type locsymcount
;
7768 Elf_Internal_Shdr
*symtab_hdr
;
7771 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
7774 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
7776 struct elf32_arm_relocs_copied
*p
;
7778 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
7780 if (!bfd_is_abs_section (p
->section
)
7781 && bfd_is_abs_section (p
->section
->output_section
))
7783 /* Input section has been discarded, either because
7784 it is a copy of a linkonce section or due to
7785 linker script /DISCARD/, so we'll be discarding
7788 else if (p
->count
!= 0)
7790 srel
= elf_section_data (p
->section
)->sreloc
;
7791 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
7792 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
7793 info
->flags
|= DF_TEXTREL
;
7798 local_got
= elf_local_got_refcounts (ibfd
);
7802 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7803 locsymcount
= symtab_hdr
->sh_info
;
7804 end_local_got
= local_got
+ locsymcount
;
7805 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
7807 srel
= htab
->srelgot
;
7808 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
7812 *local_got
= s
->size
;
7813 if (*local_tls_type
& GOT_TLS_GD
)
7814 /* TLS_GD relocs need an 8-byte structure in the GOT. */
7816 if (*local_tls_type
& GOT_TLS_IE
)
7818 if (*local_tls_type
== GOT_NORMAL
)
7821 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
7822 srel
->size
+= RELOC_SIZE (htab
);
7825 *local_got
= (bfd_vma
) -1;
7829 if (htab
->tls_ldm_got
.refcount
> 0)
7831 /* Allocate two GOT entries and one dynamic relocation (if necessary)
7832 for R_ARM_TLS_LDM32 relocations. */
7833 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
7834 htab
->sgot
->size
+= 8;
7836 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7839 htab
->tls_ldm_got
.offset
= -1;
7841 /* Allocate global sym .plt and .got entries, and space for global
7842 sym dynamic relocs. */
7843 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
7845 /* The check_relocs and adjust_dynamic_symbol entry points have
7846 determined the sizes of the various dynamic sections. Allocate
7850 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
7854 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
7857 /* It's OK to base decisions on the section name, because none
7858 of the dynobj section names depend upon the input files. */
7859 name
= bfd_get_section_name (dynobj
, s
);
7861 if (strcmp (name
, ".plt") == 0)
7863 /* Remember whether there is a PLT. */
7866 else if (strncmp (name
, ".rel", 4) == 0)
7870 /* Remember whether there are any reloc sections other
7871 than .rel(a).plt and .rela.plt.unloaded. */
7872 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
7875 /* We use the reloc_count field as a counter if we need
7876 to copy relocs into the output file. */
7880 else if (strncmp (name
, ".got", 4) != 0
7881 && strcmp (name
, ".dynbss") != 0)
7883 /* It's not one of our sections, so don't allocate space. */
7889 /* If we don't need this section, strip it from the
7890 output file. This is mostly to handle .rel(a).bss and
7891 .rel(a).plt. We must create both sections in
7892 create_dynamic_sections, because they must be created
7893 before the linker maps input sections to output
7894 sections. The linker does that before
7895 adjust_dynamic_symbol is called, and it is that
7896 function which decides whether anything needs to go
7897 into these sections. */
7898 s
->flags
|= SEC_EXCLUDE
;
7902 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
7905 /* Allocate memory for the section contents. */
7906 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
7907 if (s
->contents
== NULL
)
7911 if (elf_hash_table (info
)->dynamic_sections_created
)
7913 /* Add some entries to the .dynamic section. We fill in the
7914 values later, in elf32_arm_finish_dynamic_sections, but we
7915 must add the entries now so that we get the correct size for
7916 the .dynamic section. The DT_DEBUG entry is filled in by the
7917 dynamic linker and used by the debugger. */
7918 #define add_dynamic_entry(TAG, VAL) \
7919 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7921 if (info
->executable
)
7923 if (!add_dynamic_entry (DT_DEBUG
, 0))
7929 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
7930 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
7931 || !add_dynamic_entry (DT_PLTREL
,
7932 htab
->use_rel
? DT_REL
: DT_RELA
)
7933 || !add_dynamic_entry (DT_JMPREL
, 0))
7941 if (!add_dynamic_entry (DT_REL
, 0)
7942 || !add_dynamic_entry (DT_RELSZ
, 0)
7943 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
7948 if (!add_dynamic_entry (DT_RELA
, 0)
7949 || !add_dynamic_entry (DT_RELASZ
, 0)
7950 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
7955 /* If any dynamic relocs apply to a read-only section,
7956 then we need a DT_TEXTREL entry. */
7957 if ((info
->flags
& DF_TEXTREL
) == 0)
7958 elf_link_hash_traverse (&htab
->root
, elf32_arm_readonly_dynrelocs
,
7961 if ((info
->flags
& DF_TEXTREL
) != 0)
7963 if (!add_dynamic_entry (DT_TEXTREL
, 0))
7967 #undef add_dynamic_entry
7972 /* Finish up dynamic symbol handling. We set the contents of various
7973 dynamic sections here. */
7976 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
, struct bfd_link_info
* info
,
7977 struct elf_link_hash_entry
* h
, Elf_Internal_Sym
* sym
)
7980 struct elf32_arm_link_hash_table
*htab
;
7981 struct elf32_arm_link_hash_entry
*eh
;
7983 dynobj
= elf_hash_table (info
)->dynobj
;
7984 htab
= elf32_arm_hash_table (info
);
7985 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7987 if (h
->plt
.offset
!= (bfd_vma
) -1)
7993 Elf_Internal_Rela rel
;
7995 /* This symbol has an entry in the procedure linkage table. Set
7998 BFD_ASSERT (h
->dynindx
!= -1);
8000 splt
= bfd_get_section_by_name (dynobj
, ".plt");
8001 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
8002 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
8004 /* Fill in the entry in the procedure linkage table. */
8005 if (htab
->symbian_p
)
8007 put_arm_insn (htab
, output_bfd
,
8008 elf32_arm_symbian_plt_entry
[0],
8009 splt
->contents
+ h
->plt
.offset
);
8010 bfd_put_32 (output_bfd
,
8011 elf32_arm_symbian_plt_entry
[1],
8012 splt
->contents
+ h
->plt
.offset
+ 4);
8014 /* Fill in the entry in the .rel.plt section. */
8015 rel
.r_offset
= (splt
->output_section
->vma
8016 + splt
->output_offset
8017 + h
->plt
.offset
+ 4);
8018 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
8020 /* Get the index in the procedure linkage table which
8021 corresponds to this symbol. This is the index of this symbol
8022 in all the symbols for which we are making plt entries. The
8023 first entry in the procedure linkage table is reserved. */
8024 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
8025 / htab
->plt_entry_size
);
8029 bfd_vma got_offset
, got_address
, plt_address
;
8030 bfd_vma got_displacement
;
8034 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
8035 BFD_ASSERT (sgot
!= NULL
);
8037 /* Get the offset into the .got.plt table of the entry that
8038 corresponds to this function. */
8039 got_offset
= eh
->plt_got_offset
;
8041 /* Get the index in the procedure linkage table which
8042 corresponds to this symbol. This is the index of this symbol
8043 in all the symbols for which we are making plt entries. The
8044 first three entries in .got.plt are reserved; after that
8045 symbols appear in the same order as in .plt. */
8046 plt_index
= (got_offset
- 12) / 4;
8048 /* Calculate the address of the GOT entry. */
8049 got_address
= (sgot
->output_section
->vma
8050 + sgot
->output_offset
8053 /* ...and the address of the PLT entry. */
8054 plt_address
= (splt
->output_section
->vma
8055 + splt
->output_offset
8058 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
8059 if (htab
->vxworks_p
&& info
->shared
)
8064 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
8066 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
8068 val
|= got_address
- sgot
->output_section
->vma
;
8070 val
|= plt_index
* RELOC_SIZE (htab
);
8071 if (i
== 2 || i
== 5)
8072 bfd_put_32 (output_bfd
, val
, ptr
);
8074 put_arm_insn (htab
, output_bfd
, val
, ptr
);
8077 else if (htab
->vxworks_p
)
8082 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++)
8084 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
8088 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
8090 val
|= plt_index
* RELOC_SIZE (htab
);
8091 if (i
== 2 || i
== 5)
8092 bfd_put_32 (output_bfd
, val
, ptr
);
8094 put_arm_insn (htab
, output_bfd
, val
, ptr
);
8097 loc
= (htab
->srelplt2
->contents
8098 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
8100 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
8101 referencing the GOT for this PLT entry. */
8102 rel
.r_offset
= plt_address
+ 8;
8103 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
8104 rel
.r_addend
= got_offset
;
8105 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8106 loc
+= RELOC_SIZE (htab
);
8108 /* Create the R_ARM_ABS32 relocation referencing the
8109 beginning of the PLT for this GOT entry. */
8110 rel
.r_offset
= got_address
;
8111 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
8113 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8117 /* Calculate the displacement between the PLT slot and the
8118 entry in the GOT. The eight-byte offset accounts for the
8119 value produced by adding to pc in the first instruction
8121 got_displacement
= got_address
- (plt_address
+ 8);
8123 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
8125 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
8127 put_thumb_insn (htab
, output_bfd
,
8128 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
8129 put_thumb_insn (htab
, output_bfd
,
8130 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
8133 put_arm_insn (htab
, output_bfd
,
8134 elf32_arm_plt_entry
[0]
8135 | ((got_displacement
& 0x0ff00000) >> 20),
8137 put_arm_insn (htab
, output_bfd
,
8138 elf32_arm_plt_entry
[1]
8139 | ((got_displacement
& 0x000ff000) >> 12),
8141 put_arm_insn (htab
, output_bfd
,
8142 elf32_arm_plt_entry
[2]
8143 | (got_displacement
& 0x00000fff),
8145 #ifdef FOUR_WORD_PLT
8146 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
8150 /* Fill in the entry in the global offset table. */
8151 bfd_put_32 (output_bfd
,
8152 (splt
->output_section
->vma
8153 + splt
->output_offset
),
8154 sgot
->contents
+ got_offset
);
8156 /* Fill in the entry in the .rel(a).plt section. */
8158 rel
.r_offset
= got_address
;
8159 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
8162 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
8163 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8165 if (!h
->def_regular
)
8167 /* Mark the symbol as undefined, rather than as defined in
8168 the .plt section. Leave the value alone. */
8169 sym
->st_shndx
= SHN_UNDEF
;
8170 /* If the symbol is weak, we do need to clear the value.
8171 Otherwise, the PLT entry would provide a definition for
8172 the symbol even if the symbol wasn't defined anywhere,
8173 and so the symbol would never be NULL. */
8174 if (!h
->ref_regular_nonweak
)
8179 if (h
->got
.offset
!= (bfd_vma
) -1
8180 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
8181 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
8185 Elf_Internal_Rela rel
;
8189 /* This symbol has an entry in the global offset table. Set it
8191 sgot
= bfd_get_section_by_name (dynobj
, ".got");
8192 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
8193 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
8195 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
8197 rel
.r_offset
= (sgot
->output_section
->vma
8198 + sgot
->output_offset
8201 /* If this is a static link, or it is a -Bsymbolic link and the
8202 symbol is defined locally or was forced to be local because
8203 of a version file, we just want to emit a RELATIVE reloc.
8204 The entry in the global offset table will already have been
8205 initialized in the relocate_section function. */
8207 && SYMBOL_REFERENCES_LOCAL (info
, h
))
8209 BFD_ASSERT((h
->got
.offset
& 1) != 0);
8210 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
8213 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
8214 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
8219 BFD_ASSERT((h
->got
.offset
& 1) == 0);
8220 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
8221 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
8224 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
8225 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8231 Elf_Internal_Rela rel
;
8234 /* This symbol needs a copy reloc. Set it up. */
8235 BFD_ASSERT (h
->dynindx
!= -1
8236 && (h
->root
.type
== bfd_link_hash_defined
8237 || h
->root
.type
== bfd_link_hash_defweak
));
8239 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
8240 RELOC_SECTION (htab
, ".bss"));
8241 BFD_ASSERT (s
!= NULL
);
8244 rel
.r_offset
= (h
->root
.u
.def
.value
8245 + h
->root
.u
.def
.section
->output_section
->vma
8246 + h
->root
.u
.def
.section
->output_offset
);
8247 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
8248 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
8249 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8252 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
8253 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
8254 to the ".got" section. */
8255 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
8256 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
8257 sym
->st_shndx
= SHN_ABS
;
8262 /* Finish up the dynamic sections. */
8265 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
8271 dynobj
= elf_hash_table (info
)->dynobj
;
8273 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
8274 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
8275 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
8277 if (elf_hash_table (info
)->dynamic_sections_created
)
8280 Elf32_External_Dyn
*dyncon
, *dynconend
;
8281 struct elf32_arm_link_hash_table
*htab
;
8283 htab
= elf32_arm_hash_table (info
);
8284 splt
= bfd_get_section_by_name (dynobj
, ".plt");
8285 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
8287 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
8288 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
8290 for (; dyncon
< dynconend
; dyncon
++)
8292 Elf_Internal_Dyn dyn
;
8296 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
8307 goto get_vma_if_bpabi
;
8310 goto get_vma_if_bpabi
;
8313 goto get_vma_if_bpabi
;
8315 name
= ".gnu.version";
8316 goto get_vma_if_bpabi
;
8318 name
= ".gnu.version_d";
8319 goto get_vma_if_bpabi
;
8321 name
= ".gnu.version_r";
8322 goto get_vma_if_bpabi
;
8328 name
= RELOC_SECTION (htab
, ".plt");
8330 s
= bfd_get_section_by_name (output_bfd
, name
);
8331 BFD_ASSERT (s
!= NULL
);
8332 if (!htab
->symbian_p
)
8333 dyn
.d_un
.d_ptr
= s
->vma
;
8335 /* In the BPABI, tags in the PT_DYNAMIC section point
8336 at the file offset, not the memory address, for the
8337 convenience of the post linker. */
8338 dyn
.d_un
.d_ptr
= s
->filepos
;
8339 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8343 if (htab
->symbian_p
)
8348 s
= bfd_get_section_by_name (output_bfd
,
8349 RELOC_SECTION (htab
, ".plt"));
8350 BFD_ASSERT (s
!= NULL
);
8351 dyn
.d_un
.d_val
= s
->size
;
8352 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8357 if (!htab
->symbian_p
)
8359 /* My reading of the SVR4 ABI indicates that the
8360 procedure linkage table relocs (DT_JMPREL) should be
8361 included in the overall relocs (DT_REL). This is
8362 what Solaris does. However, UnixWare can not handle
8363 that case. Therefore, we override the DT_RELSZ entry
8364 here to make it not include the JMPREL relocs. Since
8365 the linker script arranges for .rel(a).plt to follow all
8366 other relocation sections, we don't have to worry
8367 about changing the DT_REL entry. */
8368 s
= bfd_get_section_by_name (output_bfd
,
8369 RELOC_SECTION (htab
, ".plt"));
8371 dyn
.d_un
.d_val
-= s
->size
;
8372 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8379 /* In the BPABI, the DT_REL tag must point at the file
8380 offset, not the VMA, of the first relocation
8381 section. So, we use code similar to that in
8382 elflink.c, but do not check for SHF_ALLOC on the
8383 relcoation section, since relocations sections are
8384 never allocated under the BPABI. The comments above
8385 about Unixware notwithstanding, we include all of the
8386 relocations here. */
8387 if (htab
->symbian_p
)
8390 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
8391 ? SHT_REL
: SHT_RELA
);
8393 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
8395 Elf_Internal_Shdr
*hdr
8396 = elf_elfsections (output_bfd
)[i
];
8397 if (hdr
->sh_type
== type
)
8399 if (dyn
.d_tag
== DT_RELSZ
8400 || dyn
.d_tag
== DT_RELASZ
)
8401 dyn
.d_un
.d_val
+= hdr
->sh_size
;
8402 else if ((ufile_ptr
) hdr
->sh_offset
8403 <= dyn
.d_un
.d_val
- 1)
8404 dyn
.d_un
.d_val
= hdr
->sh_offset
;
8407 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8411 /* Set the bottom bit of DT_INIT/FINI if the
8412 corresponding function is Thumb. */
8414 name
= info
->init_function
;
8417 name
= info
->fini_function
;
8419 /* If it wasn't set by elf_bfd_final_link
8420 then there is nothing to adjust. */
8421 if (dyn
.d_un
.d_val
!= 0)
8423 struct elf_link_hash_entry
* eh
;
8425 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
8426 FALSE
, FALSE
, TRUE
);
8427 if (eh
!= (struct elf_link_hash_entry
*) NULL
8428 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
8430 dyn
.d_un
.d_val
|= 1;
8431 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8438 /* Fill in the first entry in the procedure linkage table. */
8439 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
8441 const bfd_vma
*plt0_entry
;
8442 bfd_vma got_address
, plt_address
, got_displacement
;
8444 /* Calculate the addresses of the GOT and PLT. */
8445 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
8446 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
8448 if (htab
->vxworks_p
)
8450 /* The VxWorks GOT is relocated by the dynamic linker.
8451 Therefore, we must emit relocations rather than simply
8452 computing the values now. */
8453 Elf_Internal_Rela rel
;
8455 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
8456 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
8457 splt
->contents
+ 0);
8458 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
8459 splt
->contents
+ 4);
8460 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
8461 splt
->contents
+ 8);
8462 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
8464 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
8465 rel
.r_offset
= plt_address
+ 12;
8466 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
8468 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
8469 htab
->srelplt2
->contents
);
8473 got_displacement
= got_address
- (plt_address
+ 16);
8475 plt0_entry
= elf32_arm_plt0_entry
;
8476 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
8477 splt
->contents
+ 0);
8478 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
8479 splt
->contents
+ 4);
8480 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
8481 splt
->contents
+ 8);
8482 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
8483 splt
->contents
+ 12);
8485 #ifdef FOUR_WORD_PLT
8486 /* The displacement value goes in the otherwise-unused
8487 last word of the second entry. */
8488 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
8490 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
8495 /* UnixWare sets the entsize of .plt to 4, although that doesn't
8496 really seem like the right value. */
8497 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
8499 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
8501 /* Correct the .rel(a).plt.unloaded relocations. They will have
8502 incorrect symbol indexes. */
8506 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
8507 / htab
->plt_entry_size
);
8508 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
8510 for (; num_plts
; num_plts
--)
8512 Elf_Internal_Rela rel
;
8514 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
8515 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
8516 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
8517 p
+= RELOC_SIZE (htab
);
8519 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
8520 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
8521 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
8522 p
+= RELOC_SIZE (htab
);
8527 /* Fill in the first three entries in the global offset table. */
8533 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
8535 bfd_put_32 (output_bfd
,
8536 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
8538 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
8539 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
8542 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
8549 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
8551 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
8552 struct elf32_arm_link_hash_table
*globals
;
8554 i_ehdrp
= elf_elfheader (abfd
);
8556 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
8557 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
8559 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
8560 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
8564 globals
= elf32_arm_hash_table (link_info
);
8565 if (globals
->byteswap_code
)
8566 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
8570 static enum elf_reloc_type_class
8571 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
8573 switch ((int) ELF32_R_TYPE (rela
->r_info
))
8575 case R_ARM_RELATIVE
:
8576 return reloc_class_relative
;
8577 case R_ARM_JUMP_SLOT
:
8578 return reloc_class_plt
;
8580 return reloc_class_copy
;
8582 return reloc_class_normal
;
8586 /* Set the right machine number for an Arm ELF file. */
8589 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
8591 if (hdr
->sh_type
== SHT_NOTE
)
8592 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
8598 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
8600 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
8603 /* Return TRUE if this is an unwinding table entry. */
8606 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
8610 len1
= sizeof (ELF_STRING_ARM_unwind
) - 1;
8611 len2
= sizeof (ELF_STRING_ARM_unwind_once
) - 1;
8612 return (strncmp (name
, ELF_STRING_ARM_unwind
, len1
) == 0
8613 || strncmp (name
, ELF_STRING_ARM_unwind_once
, len2
) == 0);
8617 /* Set the type and flags for an ARM section. We do this by
8618 the section name, which is a hack, but ought to work. */
8621 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
8625 name
= bfd_get_section_name (abfd
, sec
);
8627 if (is_arm_elf_unwind_section_name (abfd
, name
))
8629 hdr
->sh_type
= SHT_ARM_EXIDX
;
8630 hdr
->sh_flags
|= SHF_LINK_ORDER
;
8632 else if (strcmp(name
, ".ARM.attributes") == 0)
8634 hdr
->sh_type
= SHT_ARM_ATTRIBUTES
;
8639 /* Parse an Arm EABI attributes section. */
8641 elf32_arm_parse_attributes (bfd
*abfd
, Elf_Internal_Shdr
* hdr
)
8647 contents
= bfd_malloc (hdr
->sh_size
);
8650 if (!bfd_get_section_contents (abfd
, hdr
->bfd_section
, contents
, 0,
8659 len
= hdr
->sh_size
- 1;
8663 bfd_vma section_len
;
8665 section_len
= bfd_get_32 (abfd
, p
);
8667 if (section_len
> len
)
8670 namelen
= strlen ((char *)p
) + 1;
8671 section_len
-= namelen
+ 4;
8672 if (strcmp((char *)p
, "aeabi") != 0)
8674 /* Vendor section. Ignore it. */
8675 p
+= namelen
+ section_len
;
8680 while (section_len
> 0)
8685 bfd_vma subsection_len
;
8688 tag
= read_unsigned_leb128 (abfd
, p
, &n
);
8690 subsection_len
= bfd_get_32 (abfd
, p
);
8692 if (subsection_len
> section_len
)
8693 subsection_len
= section_len
;
8694 section_len
-= subsection_len
;
8695 subsection_len
-= n
+ 4;
8696 end
= p
+ subsection_len
;
8702 bfd_boolean is_string
;
8704 tag
= read_unsigned_leb128 (abfd
, p
, &n
);
8706 if (tag
== 4 || tag
== 5)
8711 is_string
= (tag
& 1) != 0;
8712 if (tag
== Tag_compatibility
)
8714 val
= read_unsigned_leb128 (abfd
, p
, &n
);
8716 elf32_arm_add_eabi_attr_compat (abfd
, val
,
8718 p
+= strlen ((char *)p
) + 1;
8722 elf32_arm_add_eabi_attr_string (abfd
, tag
,
8724 p
+= strlen ((char *)p
) + 1;
8728 val
= read_unsigned_leb128 (abfd
, p
, &n
);
8730 elf32_arm_add_eabi_attr_int (abfd
, tag
, val
);
8736 /* Don't have anywhere convenient to attach these.
8737 Fall through for now. */
8739 /* Ignore things we don't kow about. */
8740 p
+= subsection_len
;
8751 /* Handle an ARM specific section when reading an object file. This is
8752 called when bfd_section_from_shdr finds a section with an unknown
8756 elf32_arm_section_from_shdr (bfd
*abfd
,
8757 Elf_Internal_Shdr
* hdr
,
8761 /* There ought to be a place to keep ELF backend specific flags, but
8762 at the moment there isn't one. We just keep track of the
8763 sections by their name, instead. Fortunately, the ABI gives
8764 names for all the ARM specific sections, so we will probably get
8766 switch (hdr
->sh_type
)
8769 case SHT_ARM_PREEMPTMAP
:
8770 case SHT_ARM_ATTRIBUTES
:
8777 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
8780 if (hdr
->sh_type
== SHT_ARM_ATTRIBUTES
)
8781 elf32_arm_parse_attributes(abfd
, hdr
);
8785 /* A structure used to record a list of sections, independently
8786 of the next and prev fields in the asection structure. */
8787 typedef struct section_list
8790 struct section_list
* next
;
8791 struct section_list
* prev
;
8795 /* Unfortunately we need to keep a list of sections for which
8796 an _arm_elf_section_data structure has been allocated. This
8797 is because it is possible for functions like elf32_arm_write_section
8798 to be called on a section which has had an elf_data_structure
8799 allocated for it (and so the used_by_bfd field is valid) but
8800 for which the ARM extended version of this structure - the
8801 _arm_elf_section_data structure - has not been allocated. */
8802 static section_list
* sections_with_arm_elf_section_data
= NULL
;
8805 record_section_with_arm_elf_section_data (asection
* sec
)
8807 struct section_list
* entry
;
8809 entry
= bfd_malloc (sizeof (* entry
));
8813 entry
->next
= sections_with_arm_elf_section_data
;
8815 if (entry
->next
!= NULL
)
8816 entry
->next
->prev
= entry
;
8817 sections_with_arm_elf_section_data
= entry
;
8820 static struct section_list
*
8821 find_arm_elf_section_entry (asection
* sec
)
8823 struct section_list
* entry
;
8824 static struct section_list
* last_entry
= NULL
;
8826 /* This is a short cut for the typical case where the sections are added
8827 to the sections_with_arm_elf_section_data list in forward order and
8828 then looked up here in backwards order. This makes a real difference
8829 to the ld-srec/sec64k.exp linker test. */
8830 entry
= sections_with_arm_elf_section_data
;
8831 if (last_entry
!= NULL
)
8833 if (last_entry
->sec
== sec
)
8835 else if (last_entry
->next
!= NULL
8836 && last_entry
->next
->sec
== sec
)
8837 entry
= last_entry
->next
;
8840 for (; entry
; entry
= entry
->next
)
8841 if (entry
->sec
== sec
)
8845 /* Record the entry prior to this one - it is the entry we are most
8846 likely to want to locate next time. Also this way if we have been
8847 called from unrecord_section_with_arm_elf_section_data() we will not
8848 be caching a pointer that is about to be freed. */
8849 last_entry
= entry
->prev
;
8854 static _arm_elf_section_data
*
8855 get_arm_elf_section_data (asection
* sec
)
8857 struct section_list
* entry
;
8859 entry
= find_arm_elf_section_entry (sec
);
8862 return elf32_arm_section_data (entry
->sec
);
8868 unrecord_section_with_arm_elf_section_data (asection
* sec
)
8870 struct section_list
* entry
;
8872 entry
= find_arm_elf_section_entry (sec
);
8876 if (entry
->prev
!= NULL
)
8877 entry
->prev
->next
= entry
->next
;
8878 if (entry
->next
!= NULL
)
8879 entry
->next
->prev
= entry
->prev
;
8880 if (entry
== sections_with_arm_elf_section_data
)
8881 sections_with_arm_elf_section_data
= entry
->next
;
8886 /* Called for each symbol. Builds a section map based on mapping symbols.
8887 Does not alter any of the symbols. */
8890 elf32_arm_output_symbol_hook (struct bfd_link_info
*info
,
8892 Elf_Internal_Sym
*elfsym
,
8893 asection
*input_sec
,
8894 struct elf_link_hash_entry
*h
)
8897 elf32_arm_section_map
*map
;
8898 elf32_arm_section_map
*newmap
;
8899 _arm_elf_section_data
*arm_data
;
8900 struct elf32_arm_link_hash_table
*globals
;
8902 globals
= elf32_arm_hash_table (info
);
8903 if (globals
->vxworks_p
8904 && !elf_vxworks_link_output_symbol_hook (info
, name
, elfsym
,
8908 /* Only do this on final link. */
8909 if (info
->relocatable
)
8912 /* Only build a map if we need to byteswap code. */
8913 if (!globals
->byteswap_code
)
8916 /* We only want mapping symbols. */
8917 if (!bfd_is_arm_special_symbol_name (name
, BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
8920 /* If this section has not been allocated an _arm_elf_section_data
8921 structure then we cannot record anything. */
8922 arm_data
= get_arm_elf_section_data (input_sec
);
8923 if (arm_data
== NULL
)
8926 mapcount
= arm_data
->mapcount
+ 1;
8927 map
= arm_data
->map
;
8929 /* TODO: This may be inefficient, but we probably don't usually have many
8930 mapping symbols per section. */
8931 newmap
= bfd_realloc (map
, mapcount
* sizeof (* map
));
8934 arm_data
->map
= newmap
;
8935 arm_data
->mapcount
= mapcount
;
8937 newmap
[mapcount
- 1].vma
= elfsym
->st_value
;
8938 newmap
[mapcount
- 1].type
= name
[1];
8947 struct bfd_link_info
*info
;
8950 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
8951 asection
*, struct elf_link_hash_entry
*);
8952 } output_arch_syminfo
;
8954 enum map_symbol_type
8962 /* Output a single PLT mapping symbol. */
8965 elf32_arm_ouput_plt_map_sym (output_arch_syminfo
*osi
,
8966 enum map_symbol_type type
,
8969 static const char *names
[3] = {"$a", "$t", "$d"};
8970 struct elf32_arm_link_hash_table
*htab
;
8971 Elf_Internal_Sym sym
;
8973 htab
= elf32_arm_hash_table (osi
->info
);
8974 sym
.st_value
= osi
->plt_offset
+ offset
;
8977 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
8978 sym
.st_shndx
= osi
->plt_shndx
;
8979 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, htab
->splt
, NULL
))
8985 /* Output mapping symbols for PLT entries associated with H. */
8988 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
8990 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
8991 struct elf32_arm_link_hash_table
*htab
;
8992 struct elf32_arm_link_hash_entry
*eh
;
8995 htab
= elf32_arm_hash_table (osi
->info
);
8997 if (h
->root
.type
== bfd_link_hash_indirect
)
9000 if (h
->root
.type
== bfd_link_hash_warning
)
9001 /* When warning symbols are created, they **replace** the "real"
9002 entry in the hash table, thus we never get to see the real
9003 symbol in a hash traversal. So look at it now. */
9004 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9006 if (h
->plt
.offset
== (bfd_vma
) -1)
9009 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9010 addr
= h
->plt
.offset
;
9011 if (htab
->symbian_p
)
9013 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9015 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
9018 else if (htab
->vxworks_p
)
9020 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9022 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
9024 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
9026 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
9031 bfd_boolean thumb_stub
;
9033 thumb_stub
= eh
->plt_thumb_refcount
> 0 && !htab
->use_blx
;
9036 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
9039 #ifdef FOUR_WORD_PLT
9040 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9042 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
9045 /* A three-word PLT with no Thumb thunk contains only Arm code,
9046 so only need to output a mapping symbol for the first PLT entry and
9047 entries with thumb thunks. */
9048 if (thumb_stub
|| addr
== 20)
9050 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9060 /* Output mapping symbols for the PLT. */
9063 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
9064 struct bfd_link_info
*info
,
9065 void *finfo
, bfd_boolean (*func
) (void *, const char *,
9068 struct elf_link_hash_entry
*))
9070 output_arch_syminfo osi
;
9071 struct elf32_arm_link_hash_table
*htab
;
9073 htab
= elf32_arm_hash_table (info
);
9074 if (!htab
->splt
|| htab
->splt
->size
== 0)
9077 check_use_blx(htab
);
9081 osi
.plt_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
9082 htab
->splt
->output_section
);
9083 osi
.plt_offset
= htab
->splt
->output_section
->vma
;
9085 /* Output mapping symbols for the plt header. SymbianOS does not have a
9087 if (htab
->vxworks_p
)
9089 /* VxWorks shared libraries have no PLT header. */
9092 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
9094 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 12))
9098 else if (!htab
->symbian_p
)
9100 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
9102 #ifndef FOUR_WORD_PLT
9103 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 16))
9108 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
9112 /* Allocate target specific section data. */
9115 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
9117 if (!sec
->used_by_bfd
)
9119 _arm_elf_section_data
*sdata
;
9120 bfd_size_type amt
= sizeof (*sdata
);
9122 sdata
= bfd_zalloc (abfd
, amt
);
9125 sec
->used_by_bfd
= sdata
;
9128 record_section_with_arm_elf_section_data (sec
);
9130 return _bfd_elf_new_section_hook (abfd
, sec
);
9134 /* Used to order a list of mapping symbols by address. */
9137 elf32_arm_compare_mapping (const void * a
, const void * b
)
9139 return ((const elf32_arm_section_map
*) a
)->vma
9140 > ((const elf32_arm_section_map
*) b
)->vma
;
9144 /* Do code byteswapping. Return FALSE afterwards so that the section is
9145 written out as normal. */
9148 elf32_arm_write_section (bfd
*output_bfd ATTRIBUTE_UNUSED
, asection
*sec
,
9152 _arm_elf_section_data
*arm_data
;
9153 elf32_arm_section_map
*map
;
9160 /* If this section has not been allocated an _arm_elf_section_data
9161 structure then we cannot record anything. */
9162 arm_data
= get_arm_elf_section_data (sec
);
9163 if (arm_data
== NULL
)
9166 mapcount
= arm_data
->mapcount
;
9167 map
= arm_data
->map
;
9172 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
9174 offset
= sec
->output_section
->vma
+ sec
->output_offset
;
9175 ptr
= map
[0].vma
- offset
;
9176 for (i
= 0; i
< mapcount
; i
++)
9178 if (i
== mapcount
- 1)
9181 end
= map
[i
+ 1].vma
- offset
;
9183 switch (map
[i
].type
)
9186 /* Byte swap code words. */
9187 while (ptr
+ 3 < end
)
9189 tmp
= contents
[ptr
];
9190 contents
[ptr
] = contents
[ptr
+ 3];
9191 contents
[ptr
+ 3] = tmp
;
9192 tmp
= contents
[ptr
+ 1];
9193 contents
[ptr
+ 1] = contents
[ptr
+ 2];
9194 contents
[ptr
+ 2] = tmp
;
9200 /* Byte swap code halfwords. */
9201 while (ptr
+ 1 < end
)
9203 tmp
= contents
[ptr
];
9204 contents
[ptr
] = contents
[ptr
+ 1];
9205 contents
[ptr
+ 1] = tmp
;
9211 /* Leave data alone. */
9218 arm_data
->mapcount
= 0;
9219 arm_data
->map
= NULL
;
9220 unrecord_section_with_arm_elf_section_data (sec
);
9226 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
9228 void * ignore ATTRIBUTE_UNUSED
)
9230 unrecord_section_with_arm_elf_section_data (sec
);
9234 elf32_arm_close_and_cleanup (bfd
* abfd
)
9237 bfd_map_over_sections (abfd
,
9238 unrecord_section_via_map_over_sections
,
9241 return _bfd_elf_close_and_cleanup (abfd
);
9245 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
9248 bfd_map_over_sections (abfd
,
9249 unrecord_section_via_map_over_sections
,
9252 return _bfd_free_cached_info (abfd
);
9255 /* Display STT_ARM_TFUNC symbols as functions. */
9258 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
9261 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
9263 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
9264 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
9268 /* Mangle thumb function symbols as we read them in. */
9271 elf32_arm_swap_symbol_in (bfd
* abfd
,
9274 Elf_Internal_Sym
*dst
)
9276 bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
);
9278 /* New EABI objects mark thumb function symbols by setting the low bit of
9279 the address. Turn these into STT_ARM_TFUNC. */
9280 if (ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
9281 && (dst
->st_value
& 1))
9283 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
9284 dst
->st_value
&= ~(bfd_vma
) 1;
9289 /* Mangle thumb function symbols as we write them out. */
9292 elf32_arm_swap_symbol_out (bfd
*abfd
,
9293 const Elf_Internal_Sym
*src
,
9297 Elf_Internal_Sym newsym
;
9299 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
9300 of the address set, as per the new EABI. We do this unconditionally
9301 because objcopy does not set the elf header flags until after
9302 it writes out the symbol table. */
9303 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
9306 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
9307 if (newsym
.st_shndx
!= SHN_UNDEF
)
9309 /* Do this only for defined symbols. At link type, the static
9310 linker will simulate the work of dynamic linker of resolving
9311 symbols and will carry over the thumbness of found symbols to
9312 the output symbol table. It's not clear how it happens, but
9313 the thumbness of underfined symbols can well be different at
9314 runtime, and writing '1' for them will be confusing for users
9315 and possibly for dynamic linker itself.
9317 newsym
.st_value
|= 1;
9320 newsym
.st_value
|= 1;
9324 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
9327 /* Add the PT_ARM_EXIDX program header. */
9330 elf32_arm_modify_segment_map (bfd
*abfd
,
9331 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
9333 struct elf_segment_map
*m
;
9336 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
9337 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
9339 /* If there is already a PT_ARM_EXIDX header, then we do not
9340 want to add another one. This situation arises when running
9341 "strip"; the input binary already has the header. */
9342 m
= elf_tdata (abfd
)->segment_map
;
9343 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
9347 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
9350 m
->p_type
= PT_ARM_EXIDX
;
9352 m
->sections
[0] = sec
;
9354 m
->next
= elf_tdata (abfd
)->segment_map
;
9355 elf_tdata (abfd
)->segment_map
= m
;
9362 /* We may add a PT_ARM_EXIDX program header. */
9365 elf32_arm_additional_program_headers (bfd
*abfd
,
9366 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
9370 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
9371 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
9377 /* We use this to override swap_symbol_in and swap_symbol_out. */
9378 const struct elf_size_info elf32_arm_size_info
= {
9379 sizeof (Elf32_External_Ehdr
),
9380 sizeof (Elf32_External_Phdr
),
9381 sizeof (Elf32_External_Shdr
),
9382 sizeof (Elf32_External_Rel
),
9383 sizeof (Elf32_External_Rela
),
9384 sizeof (Elf32_External_Sym
),
9385 sizeof (Elf32_External_Dyn
),
9386 sizeof (Elf_External_Note
),
9390 ELFCLASS32
, EV_CURRENT
,
9391 bfd_elf32_write_out_phdrs
,
9392 bfd_elf32_write_shdrs_and_ehdr
,
9393 bfd_elf32_write_relocs
,
9394 elf32_arm_swap_symbol_in
,
9395 elf32_arm_swap_symbol_out
,
9396 bfd_elf32_slurp_reloc_table
,
9397 bfd_elf32_slurp_symbol_table
,
9398 bfd_elf32_swap_dyn_in
,
9399 bfd_elf32_swap_dyn_out
,
9400 bfd_elf32_swap_reloc_in
,
9401 bfd_elf32_swap_reloc_out
,
9402 bfd_elf32_swap_reloca_in
,
9403 bfd_elf32_swap_reloca_out
9406 #define ELF_ARCH bfd_arch_arm
9407 #define ELF_MACHINE_CODE EM_ARM
9408 #ifdef __QNXTARGET__
9409 #define ELF_MAXPAGESIZE 0x1000
9411 #define ELF_MAXPAGESIZE 0x8000
9413 #define ELF_MINPAGESIZE 0x1000
9414 #define ELF_COMMONPAGESIZE 0x1000
9416 #define bfd_elf32_mkobject elf32_arm_mkobject
9418 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
9419 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
9420 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
9421 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
9422 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
9423 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
9424 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
9425 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
9426 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
9427 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
9428 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
9429 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
9430 #define bfd_elf32_bfd_final_link elf32_arm_bfd_final_link
9432 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
9433 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
9434 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
9435 #define elf_backend_check_relocs elf32_arm_check_relocs
9436 #define elf_backend_relocate_section elf32_arm_relocate_section
9437 #define elf_backend_write_section elf32_arm_write_section
9438 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
9439 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
9440 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
9441 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
9442 #define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook
9443 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
9444 #define elf_backend_post_process_headers elf32_arm_post_process_headers
9445 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
9446 #define elf_backend_object_p elf32_arm_object_p
9447 #define elf_backend_section_flags elf32_arm_section_flags
9448 #define elf_backend_fake_sections elf32_arm_fake_sections
9449 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
9450 #define elf_backend_final_write_processing elf32_arm_final_write_processing
9451 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
9452 #define elf_backend_symbol_processing elf32_arm_symbol_processing
9453 #define elf_backend_size_info elf32_arm_size_info
9454 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
9455 #define elf_backend_additional_program_headers \
9456 elf32_arm_additional_program_headers
9457 #define elf_backend_output_arch_local_syms \
9458 elf32_arm_output_arch_local_syms
9459 #define elf_backend_begin_write_processing \
9460 elf32_arm_begin_write_processing
9462 #define elf_backend_can_refcount 1
9463 #define elf_backend_can_gc_sections 1
9464 #define elf_backend_plt_readonly 1
9465 #define elf_backend_want_got_plt 1
9466 #define elf_backend_want_plt_sym 0
9467 #define elf_backend_may_use_rel_p 1
9468 #define elf_backend_may_use_rela_p 0
9469 #define elf_backend_default_use_rela_p 0
9470 #define elf_backend_rela_normal 0
9472 #define elf_backend_got_header_size 12
9474 #include "elf32-target.h"
9476 /* VxWorks Targets */
9478 #undef TARGET_LITTLE_SYM
9479 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
9480 #undef TARGET_LITTLE_NAME
9481 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
9482 #undef TARGET_BIG_SYM
9483 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
9484 #undef TARGET_BIG_NAME
9485 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
9487 /* Like elf32_arm_link_hash_table_create -- but overrides
9488 appropriately for VxWorks. */
9489 static struct bfd_link_hash_table
*
9490 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
9492 struct bfd_link_hash_table
*ret
;
9494 ret
= elf32_arm_link_hash_table_create (abfd
);
9497 struct elf32_arm_link_hash_table
*htab
9498 = (struct elf32_arm_link_hash_table
*) ret
;
9500 htab
->vxworks_p
= 1;
9506 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
9508 elf32_arm_final_write_processing (abfd
, linker
);
9509 elf_vxworks_final_write_processing (abfd
, linker
);
9513 #define elf32_bed elf32_arm_vxworks_bed
9515 #undef bfd_elf32_bfd_link_hash_table_create
9516 #define bfd_elf32_bfd_link_hash_table_create \
9517 elf32_arm_vxworks_link_hash_table_create
9518 #undef elf_backend_add_symbol_hook
9519 #define elf_backend_add_symbol_hook \
9520 elf_vxworks_add_symbol_hook
9521 #undef elf_backend_final_write_processing
9522 #define elf_backend_final_write_processing \
9523 elf32_arm_vxworks_final_write_processing
9524 #undef elf_backend_emit_relocs
9525 #define elf_backend_emit_relocs \
9526 elf_vxworks_emit_relocs
9528 #undef elf_backend_may_use_rel_p
9529 #define elf_backend_may_use_rel_p 0
9530 #undef elf_backend_may_use_rela_p
9531 #define elf_backend_may_use_rela_p 1
9532 #undef elf_backend_default_use_rela_p
9533 #define elf_backend_default_use_rela_p 1
9534 #undef elf_backend_rela_normal
9535 #define elf_backend_rela_normal 1
9536 #undef elf_backend_want_plt_sym
9537 #define elf_backend_want_plt_sym 1
9538 #undef ELF_MAXPAGESIZE
9539 #define ELF_MAXPAGESIZE 0x1000
9541 #include "elf32-target.h"
9544 /* Symbian OS Targets */
9546 #undef TARGET_LITTLE_SYM
9547 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
9548 #undef TARGET_LITTLE_NAME
9549 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
9550 #undef TARGET_BIG_SYM
9551 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
9552 #undef TARGET_BIG_NAME
9553 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
9555 /* Like elf32_arm_link_hash_table_create -- but overrides
9556 appropriately for Symbian OS. */
9557 static struct bfd_link_hash_table
*
9558 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
9560 struct bfd_link_hash_table
*ret
;
9562 ret
= elf32_arm_link_hash_table_create (abfd
);
9565 struct elf32_arm_link_hash_table
*htab
9566 = (struct elf32_arm_link_hash_table
*)ret
;
9567 /* There is no PLT header for Symbian OS. */
9568 htab
->plt_header_size
= 0;
9569 /* The PLT entries are each three instructions. */
9570 htab
->plt_entry_size
= 4 * NUM_ELEM (elf32_arm_symbian_plt_entry
);
9571 htab
->symbian_p
= 1;
9572 /* Symbian uses armv5t or above, so use_blx is always true. */
9574 htab
->root
.is_relocatable_executable
= 1;
9579 static const struct bfd_elf_special_section
9580 elf32_arm_symbian_special_sections
[] =
9582 /* In a BPABI executable, the dynamic linking sections do not go in
9583 the loadable read-only segment. The post-linker may wish to
9584 refer to these sections, but they are not part of the final
9586 { ".dynamic", 8, 0, SHT_DYNAMIC
, 0 },
9587 { ".dynstr", 7, 0, SHT_STRTAB
, 0 },
9588 { ".dynsym", 7, 0, SHT_DYNSYM
, 0 },
9589 { ".got", 4, 0, SHT_PROGBITS
, 0 },
9590 { ".hash", 5, 0, SHT_HASH
, 0 },
9591 /* These sections do not need to be writable as the SymbianOS
9592 postlinker will arrange things so that no dynamic relocation is
9594 { ".init_array", 11, 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
9595 { ".fini_array", 11, 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
9596 { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
9597 { NULL
, 0, 0, 0, 0 }
9601 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
9602 struct bfd_link_info
*link_info
)
9604 /* BPABI objects are never loaded directly by an OS kernel; they are
9605 processed by a postlinker first, into an OS-specific format. If
9606 the D_PAGED bit is set on the file, BFD will align segments on
9607 page boundaries, so that an OS can directly map the file. With
9608 BPABI objects, that just results in wasted space. In addition,
9609 because we clear the D_PAGED bit, map_sections_to_segments will
9610 recognize that the program headers should not be mapped into any
9611 loadable segment. */
9612 abfd
->flags
&= ~D_PAGED
;
9613 elf32_arm_begin_write_processing(abfd
, link_info
);
9617 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
9618 struct bfd_link_info
*info
)
9620 struct elf_segment_map
*m
;
9623 /* BPABI shared libraries and executables should have a PT_DYNAMIC
9624 segment. However, because the .dynamic section is not marked
9625 with SEC_LOAD, the generic ELF code will not create such a
9627 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
9630 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
9631 if (m
->p_type
== PT_DYNAMIC
)
9636 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
9637 m
->next
= elf_tdata (abfd
)->segment_map
;
9638 elf_tdata (abfd
)->segment_map
= m
;
9642 /* Also call the generic arm routine. */
9643 return elf32_arm_modify_segment_map (abfd
, info
);
9647 #define elf32_bed elf32_arm_symbian_bed
9649 /* The dynamic sections are not allocated on SymbianOS; the postlinker
9650 will process them and then discard them. */
9651 #undef ELF_DYNAMIC_SEC_FLAGS
9652 #define ELF_DYNAMIC_SEC_FLAGS \
9653 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
9655 #undef bfd_elf32_bfd_link_hash_table_create
9656 #define bfd_elf32_bfd_link_hash_table_create \
9657 elf32_arm_symbian_link_hash_table_create
9658 #undef elf_backend_add_symbol_hook
9660 #undef elf_backend_special_sections
9661 #define elf_backend_special_sections elf32_arm_symbian_special_sections
9663 #undef elf_backend_begin_write_processing
9664 #define elf_backend_begin_write_processing \
9665 elf32_arm_symbian_begin_write_processing
9666 #undef elf_backend_final_write_processing
9667 #define elf_backend_final_write_processing \
9668 elf32_arm_final_write_processing
9669 #undef elf_backend_emit_relocs
9671 #undef elf_backend_modify_segment_map
9672 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
9674 /* There is no .got section for BPABI objects, and hence no header. */
9675 #undef elf_backend_got_header_size
9676 #define elf_backend_got_header_size 0
9678 /* Similarly, there is no .got.plt section. */
9679 #undef elf_backend_want_got_plt
9680 #define elf_backend_want_got_plt 0
9682 #undef elf_backend_may_use_rel_p
9683 #define elf_backend_may_use_rel_p 1
9684 #undef elf_backend_may_use_rela_p
9685 #define elf_backend_may_use_rela_p 0
9686 #undef elf_backend_default_use_rela_p
9687 #define elf_backend_default_use_rela_p 0
9688 #undef elf_backend_rela_normal
9689 #define elf_backend_rela_normal 0
9690 #undef elf_backend_want_plt_sym
9691 #define elf_backend_want_plt_sym 0
9692 #undef ELF_MAXPAGESIZE
9693 #define ELF_MAXPAGESIZE 0x8000
9695 #include "elf32-target.h"