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_dont
,/* complain_on_overflow */
839 bfd_elf_generic_reloc
, /* special_function */
840 "R_ARM_THM_ALU_PREL_11_0",/* name */
841 FALSE
, /* partial_inplace */
842 0xffffffff, /* src_mask */
843 0xffffffff, /* dst_mask */
844 TRUE
), /* pcrel_offset */
846 HOWTO (R_ARM_THM_PC12
, /* type */
848 2, /* size (0 = byte, 1 = short, 2 = long) */
850 TRUE
, /* pc_relative */
852 complain_overflow_dont
,/* complain_on_overflow */
853 bfd_elf_generic_reloc
, /* special_function */
854 "R_ARM_THM_PC12", /* name */
855 FALSE
, /* partial_inplace */
856 0xffffffff, /* src_mask */
857 0xffffffff, /* dst_mask */
858 TRUE
), /* pcrel_offset */
860 HOWTO (R_ARM_ABS32_NOI
, /* type */
862 2, /* size (0 = byte, 1 = short, 2 = long) */
864 FALSE
, /* pc_relative */
866 complain_overflow_dont
,/* complain_on_overflow */
867 bfd_elf_generic_reloc
, /* special_function */
868 "R_ARM_ABS32_NOI", /* name */
869 FALSE
, /* partial_inplace */
870 0xffffffff, /* src_mask */
871 0xffffffff, /* dst_mask */
872 FALSE
), /* pcrel_offset */
874 HOWTO (R_ARM_REL32_NOI
, /* type */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
878 TRUE
, /* pc_relative */
880 complain_overflow_dont
,/* complain_on_overflow */
881 bfd_elf_generic_reloc
, /* special_function */
882 "R_ARM_REL32_NOI", /* name */
883 FALSE
, /* partial_inplace */
884 0xffffffff, /* src_mask */
885 0xffffffff, /* dst_mask */
886 FALSE
), /* pcrel_offset */
888 /* Group relocations. */
890 HOWTO (R_ARM_ALU_PC_G0_NC
, /* type */
892 2, /* size (0 = byte, 1 = short, 2 = long) */
894 TRUE
, /* pc_relative */
896 complain_overflow_dont
,/* complain_on_overflow */
897 bfd_elf_generic_reloc
, /* special_function */
898 "R_ARM_ALU_PC_G0_NC", /* name */
899 FALSE
, /* partial_inplace */
900 0xffffffff, /* src_mask */
901 0xffffffff, /* dst_mask */
902 TRUE
), /* pcrel_offset */
904 HOWTO (R_ARM_ALU_PC_G0
, /* type */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
908 TRUE
, /* pc_relative */
910 complain_overflow_dont
,/* complain_on_overflow */
911 bfd_elf_generic_reloc
, /* special_function */
912 "R_ARM_ALU_PC_G0", /* name */
913 FALSE
, /* partial_inplace */
914 0xffffffff, /* src_mask */
915 0xffffffff, /* dst_mask */
916 TRUE
), /* pcrel_offset */
918 HOWTO (R_ARM_ALU_PC_G1_NC
, /* type */
920 2, /* size (0 = byte, 1 = short, 2 = long) */
922 TRUE
, /* pc_relative */
924 complain_overflow_dont
,/* complain_on_overflow */
925 bfd_elf_generic_reloc
, /* special_function */
926 "R_ARM_ALU_PC_G1_NC", /* name */
927 FALSE
, /* partial_inplace */
928 0xffffffff, /* src_mask */
929 0xffffffff, /* dst_mask */
930 TRUE
), /* pcrel_offset */
932 HOWTO (R_ARM_ALU_PC_G1
, /* type */
934 2, /* size (0 = byte, 1 = short, 2 = long) */
936 TRUE
, /* pc_relative */
938 complain_overflow_dont
,/* complain_on_overflow */
939 bfd_elf_generic_reloc
, /* special_function */
940 "R_ARM_ALU_PC_G1", /* name */
941 FALSE
, /* partial_inplace */
942 0xffffffff, /* src_mask */
943 0xffffffff, /* dst_mask */
944 TRUE
), /* pcrel_offset */
946 HOWTO (R_ARM_ALU_PC_G2
, /* type */
948 2, /* size (0 = byte, 1 = short, 2 = long) */
950 TRUE
, /* pc_relative */
952 complain_overflow_dont
,/* complain_on_overflow */
953 bfd_elf_generic_reloc
, /* special_function */
954 "R_ARM_ALU_PC_G2", /* name */
955 FALSE
, /* partial_inplace */
956 0xffffffff, /* src_mask */
957 0xffffffff, /* dst_mask */
958 TRUE
), /* pcrel_offset */
960 HOWTO (R_ARM_LDR_PC_G1
, /* type */
962 2, /* size (0 = byte, 1 = short, 2 = long) */
964 TRUE
, /* pc_relative */
966 complain_overflow_dont
,/* complain_on_overflow */
967 bfd_elf_generic_reloc
, /* special_function */
968 "R_ARM_LDR_PC_G1", /* name */
969 FALSE
, /* partial_inplace */
970 0xffffffff, /* src_mask */
971 0xffffffff, /* dst_mask */
972 TRUE
), /* pcrel_offset */
974 HOWTO (R_ARM_LDR_PC_G2
, /* type */
976 2, /* size (0 = byte, 1 = short, 2 = long) */
978 TRUE
, /* pc_relative */
980 complain_overflow_dont
,/* complain_on_overflow */
981 bfd_elf_generic_reloc
, /* special_function */
982 "R_ARM_LDR_PC_G2", /* name */
983 FALSE
, /* partial_inplace */
984 0xffffffff, /* src_mask */
985 0xffffffff, /* dst_mask */
986 TRUE
), /* pcrel_offset */
988 HOWTO (R_ARM_LDRS_PC_G0
, /* type */
990 2, /* size (0 = byte, 1 = short, 2 = long) */
992 TRUE
, /* pc_relative */
994 complain_overflow_dont
,/* complain_on_overflow */
995 bfd_elf_generic_reloc
, /* special_function */
996 "R_ARM_LDRS_PC_G0", /* name */
997 FALSE
, /* partial_inplace */
998 0xffffffff, /* src_mask */
999 0xffffffff, /* dst_mask */
1000 TRUE
), /* pcrel_offset */
1002 HOWTO (R_ARM_LDRS_PC_G1
, /* type */
1004 2, /* size (0 = byte, 1 = short, 2 = long) */
1006 TRUE
, /* pc_relative */
1008 complain_overflow_dont
,/* complain_on_overflow */
1009 bfd_elf_generic_reloc
, /* special_function */
1010 "R_ARM_LDRS_PC_G1", /* name */
1011 FALSE
, /* partial_inplace */
1012 0xffffffff, /* src_mask */
1013 0xffffffff, /* dst_mask */
1014 TRUE
), /* pcrel_offset */
1016 HOWTO (R_ARM_LDRS_PC_G2
, /* type */
1018 2, /* size (0 = byte, 1 = short, 2 = long) */
1020 TRUE
, /* pc_relative */
1022 complain_overflow_dont
,/* complain_on_overflow */
1023 bfd_elf_generic_reloc
, /* special_function */
1024 "R_ARM_LDRS_PC_G2", /* name */
1025 FALSE
, /* partial_inplace */
1026 0xffffffff, /* src_mask */
1027 0xffffffff, /* dst_mask */
1028 TRUE
), /* pcrel_offset */
1030 HOWTO (R_ARM_LDC_PC_G0
, /* type */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 TRUE
, /* pc_relative */
1036 complain_overflow_dont
,/* complain_on_overflow */
1037 bfd_elf_generic_reloc
, /* special_function */
1038 "R_ARM_LDC_PC_G0", /* name */
1039 FALSE
, /* partial_inplace */
1040 0xffffffff, /* src_mask */
1041 0xffffffff, /* dst_mask */
1042 TRUE
), /* pcrel_offset */
1044 HOWTO (R_ARM_LDC_PC_G1
, /* type */
1046 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 TRUE
, /* pc_relative */
1050 complain_overflow_dont
,/* complain_on_overflow */
1051 bfd_elf_generic_reloc
, /* special_function */
1052 "R_ARM_LDC_PC_G1", /* name */
1053 FALSE
, /* partial_inplace */
1054 0xffffffff, /* src_mask */
1055 0xffffffff, /* dst_mask */
1056 TRUE
), /* pcrel_offset */
1058 HOWTO (R_ARM_LDC_PC_G2
, /* type */
1060 2, /* size (0 = byte, 1 = short, 2 = long) */
1062 TRUE
, /* pc_relative */
1064 complain_overflow_dont
,/* complain_on_overflow */
1065 bfd_elf_generic_reloc
, /* special_function */
1066 "R_ARM_LDC_PC_G2", /* name */
1067 FALSE
, /* partial_inplace */
1068 0xffffffff, /* src_mask */
1069 0xffffffff, /* dst_mask */
1070 TRUE
), /* pcrel_offset */
1072 HOWTO (R_ARM_ALU_SB_G0_NC
, /* type */
1074 2, /* size (0 = byte, 1 = short, 2 = long) */
1076 TRUE
, /* pc_relative */
1078 complain_overflow_dont
,/* complain_on_overflow */
1079 bfd_elf_generic_reloc
, /* special_function */
1080 "R_ARM_ALU_SB_G0_NC", /* name */
1081 FALSE
, /* partial_inplace */
1082 0xffffffff, /* src_mask */
1083 0xffffffff, /* dst_mask */
1084 TRUE
), /* pcrel_offset */
1086 HOWTO (R_ARM_ALU_SB_G0
, /* type */
1088 2, /* size (0 = byte, 1 = short, 2 = long) */
1090 TRUE
, /* pc_relative */
1092 complain_overflow_dont
,/* complain_on_overflow */
1093 bfd_elf_generic_reloc
, /* special_function */
1094 "R_ARM_ALU_SB_G0", /* name */
1095 FALSE
, /* partial_inplace */
1096 0xffffffff, /* src_mask */
1097 0xffffffff, /* dst_mask */
1098 TRUE
), /* pcrel_offset */
1100 HOWTO (R_ARM_ALU_SB_G1_NC
, /* type */
1102 2, /* size (0 = byte, 1 = short, 2 = long) */
1104 TRUE
, /* pc_relative */
1106 complain_overflow_dont
,/* complain_on_overflow */
1107 bfd_elf_generic_reloc
, /* special_function */
1108 "R_ARM_ALU_SB_G1_NC", /* name */
1109 FALSE
, /* partial_inplace */
1110 0xffffffff, /* src_mask */
1111 0xffffffff, /* dst_mask */
1112 TRUE
), /* pcrel_offset */
1114 HOWTO (R_ARM_ALU_SB_G1
, /* type */
1116 2, /* size (0 = byte, 1 = short, 2 = long) */
1118 TRUE
, /* pc_relative */
1120 complain_overflow_dont
,/* complain_on_overflow */
1121 bfd_elf_generic_reloc
, /* special_function */
1122 "R_ARM_ALU_SB_G1", /* name */
1123 FALSE
, /* partial_inplace */
1124 0xffffffff, /* src_mask */
1125 0xffffffff, /* dst_mask */
1126 TRUE
), /* pcrel_offset */
1128 HOWTO (R_ARM_ALU_SB_G2
, /* type */
1130 2, /* size (0 = byte, 1 = short, 2 = long) */
1132 TRUE
, /* pc_relative */
1134 complain_overflow_dont
,/* complain_on_overflow */
1135 bfd_elf_generic_reloc
, /* special_function */
1136 "R_ARM_ALU_SB_G2", /* name */
1137 FALSE
, /* partial_inplace */
1138 0xffffffff, /* src_mask */
1139 0xffffffff, /* dst_mask */
1140 TRUE
), /* pcrel_offset */
1142 HOWTO (R_ARM_LDR_SB_G0
, /* type */
1144 2, /* size (0 = byte, 1 = short, 2 = long) */
1146 TRUE
, /* pc_relative */
1148 complain_overflow_dont
,/* complain_on_overflow */
1149 bfd_elf_generic_reloc
, /* special_function */
1150 "R_ARM_LDR_SB_G0", /* name */
1151 FALSE
, /* partial_inplace */
1152 0xffffffff, /* src_mask */
1153 0xffffffff, /* dst_mask */
1154 TRUE
), /* pcrel_offset */
1156 HOWTO (R_ARM_LDR_SB_G1
, /* type */
1158 2, /* size (0 = byte, 1 = short, 2 = long) */
1160 TRUE
, /* pc_relative */
1162 complain_overflow_dont
,/* complain_on_overflow */
1163 bfd_elf_generic_reloc
, /* special_function */
1164 "R_ARM_LDR_SB_G1", /* name */
1165 FALSE
, /* partial_inplace */
1166 0xffffffff, /* src_mask */
1167 0xffffffff, /* dst_mask */
1168 TRUE
), /* pcrel_offset */
1170 HOWTO (R_ARM_LDR_SB_G2
, /* type */
1172 2, /* size (0 = byte, 1 = short, 2 = long) */
1174 TRUE
, /* pc_relative */
1176 complain_overflow_dont
,/* complain_on_overflow */
1177 bfd_elf_generic_reloc
, /* special_function */
1178 "R_ARM_LDR_SB_G2", /* name */
1179 FALSE
, /* partial_inplace */
1180 0xffffffff, /* src_mask */
1181 0xffffffff, /* dst_mask */
1182 TRUE
), /* pcrel_offset */
1184 HOWTO (R_ARM_LDRS_SB_G0
, /* type */
1186 2, /* size (0 = byte, 1 = short, 2 = long) */
1188 TRUE
, /* pc_relative */
1190 complain_overflow_dont
,/* complain_on_overflow */
1191 bfd_elf_generic_reloc
, /* special_function */
1192 "R_ARM_LDRS_SB_G0", /* name */
1193 FALSE
, /* partial_inplace */
1194 0xffffffff, /* src_mask */
1195 0xffffffff, /* dst_mask */
1196 TRUE
), /* pcrel_offset */
1198 HOWTO (R_ARM_LDRS_SB_G1
, /* type */
1200 2, /* size (0 = byte, 1 = short, 2 = long) */
1202 TRUE
, /* pc_relative */
1204 complain_overflow_dont
,/* complain_on_overflow */
1205 bfd_elf_generic_reloc
, /* special_function */
1206 "R_ARM_LDRS_SB_G1", /* name */
1207 FALSE
, /* partial_inplace */
1208 0xffffffff, /* src_mask */
1209 0xffffffff, /* dst_mask */
1210 TRUE
), /* pcrel_offset */
1212 HOWTO (R_ARM_LDRS_SB_G2
, /* type */
1214 2, /* size (0 = byte, 1 = short, 2 = long) */
1216 TRUE
, /* pc_relative */
1218 complain_overflow_dont
,/* complain_on_overflow */
1219 bfd_elf_generic_reloc
, /* special_function */
1220 "R_ARM_LDRS_SB_G2", /* name */
1221 FALSE
, /* partial_inplace */
1222 0xffffffff, /* src_mask */
1223 0xffffffff, /* dst_mask */
1224 TRUE
), /* pcrel_offset */
1226 HOWTO (R_ARM_LDC_SB_G0
, /* type */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 TRUE
, /* pc_relative */
1232 complain_overflow_dont
,/* complain_on_overflow */
1233 bfd_elf_generic_reloc
, /* special_function */
1234 "R_ARM_LDC_SB_G0", /* name */
1235 FALSE
, /* partial_inplace */
1236 0xffffffff, /* src_mask */
1237 0xffffffff, /* dst_mask */
1238 TRUE
), /* pcrel_offset */
1240 HOWTO (R_ARM_LDC_SB_G1
, /* type */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 TRUE
, /* pc_relative */
1246 complain_overflow_dont
,/* complain_on_overflow */
1247 bfd_elf_generic_reloc
, /* special_function */
1248 "R_ARM_LDC_SB_G1", /* name */
1249 FALSE
, /* partial_inplace */
1250 0xffffffff, /* src_mask */
1251 0xffffffff, /* dst_mask */
1252 TRUE
), /* pcrel_offset */
1254 HOWTO (R_ARM_LDC_SB_G2
, /* type */
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1258 TRUE
, /* pc_relative */
1260 complain_overflow_dont
,/* complain_on_overflow */
1261 bfd_elf_generic_reloc
, /* special_function */
1262 "R_ARM_LDC_SB_G2", /* name */
1263 FALSE
, /* partial_inplace */
1264 0xffffffff, /* src_mask */
1265 0xffffffff, /* dst_mask */
1266 TRUE
), /* pcrel_offset */
1268 /* End of group relocations. */
1270 HOWTO (R_ARM_MOVW_BREL_NC
, /* type */
1272 2, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE
, /* pc_relative */
1276 complain_overflow_dont
,/* complain_on_overflow */
1277 bfd_elf_generic_reloc
, /* special_function */
1278 "R_ARM_MOVW_BREL_NC", /* name */
1279 FALSE
, /* partial_inplace */
1280 0x0000ffff, /* src_mask */
1281 0x0000ffff, /* dst_mask */
1282 FALSE
), /* pcrel_offset */
1284 HOWTO (R_ARM_MOVT_BREL
, /* type */
1286 2, /* size (0 = byte, 1 = short, 2 = long) */
1288 FALSE
, /* pc_relative */
1290 complain_overflow_bitfield
,/* complain_on_overflow */
1291 bfd_elf_generic_reloc
, /* special_function */
1292 "R_ARM_MOVT_BREL", /* name */
1293 FALSE
, /* partial_inplace */
1294 0x0000ffff, /* src_mask */
1295 0x0000ffff, /* dst_mask */
1296 FALSE
), /* pcrel_offset */
1298 HOWTO (R_ARM_MOVW_BREL
, /* type */
1300 2, /* size (0 = byte, 1 = short, 2 = long) */
1302 FALSE
, /* pc_relative */
1304 complain_overflow_dont
,/* complain_on_overflow */
1305 bfd_elf_generic_reloc
, /* special_function */
1306 "R_ARM_MOVW_BREL", /* name */
1307 FALSE
, /* partial_inplace */
1308 0x0000ffff, /* src_mask */
1309 0x0000ffff, /* dst_mask */
1310 FALSE
), /* pcrel_offset */
1312 HOWTO (R_ARM_THM_MOVW_BREL_NC
,/* type */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 FALSE
, /* pc_relative */
1318 complain_overflow_dont
,/* complain_on_overflow */
1319 bfd_elf_generic_reloc
, /* special_function */
1320 "R_ARM_THM_MOVW_BREL_NC",/* name */
1321 FALSE
, /* partial_inplace */
1322 0x040f70ff, /* src_mask */
1323 0x040f70ff, /* dst_mask */
1324 FALSE
), /* pcrel_offset */
1326 HOWTO (R_ARM_THM_MOVT_BREL
, /* type */
1328 2, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE
, /* pc_relative */
1332 complain_overflow_bitfield
,/* complain_on_overflow */
1333 bfd_elf_generic_reloc
, /* special_function */
1334 "R_ARM_THM_MOVT_BREL", /* name */
1335 FALSE
, /* partial_inplace */
1336 0x040f70ff, /* src_mask */
1337 0x040f70ff, /* dst_mask */
1338 FALSE
), /* pcrel_offset */
1340 HOWTO (R_ARM_THM_MOVW_BREL
, /* type */
1342 2, /* size (0 = byte, 1 = short, 2 = long) */
1344 FALSE
, /* pc_relative */
1346 complain_overflow_dont
,/* complain_on_overflow */
1347 bfd_elf_generic_reloc
, /* special_function */
1348 "R_ARM_THM_MOVW_BREL", /* name */
1349 FALSE
, /* partial_inplace */
1350 0x040f70ff, /* src_mask */
1351 0x040f70ff, /* dst_mask */
1352 FALSE
), /* pcrel_offset */
1354 EMPTY_HOWTO (90), /* unallocated */
1359 HOWTO (R_ARM_PLT32_ABS
, /* type */
1361 2, /* size (0 = byte, 1 = short, 2 = long) */
1363 FALSE
, /* pc_relative */
1365 complain_overflow_dont
,/* complain_on_overflow */
1366 bfd_elf_generic_reloc
, /* special_function */
1367 "R_ARM_PLT32_ABS", /* name */
1368 FALSE
, /* partial_inplace */
1369 0xffffffff, /* src_mask */
1370 0xffffffff, /* dst_mask */
1371 FALSE
), /* pcrel_offset */
1373 HOWTO (R_ARM_GOT_ABS
, /* type */
1375 2, /* size (0 = byte, 1 = short, 2 = long) */
1377 FALSE
, /* pc_relative */
1379 complain_overflow_dont
,/* complain_on_overflow */
1380 bfd_elf_generic_reloc
, /* special_function */
1381 "R_ARM_GOT_ABS", /* name */
1382 FALSE
, /* partial_inplace */
1383 0xffffffff, /* src_mask */
1384 0xffffffff, /* dst_mask */
1385 FALSE
), /* pcrel_offset */
1387 HOWTO (R_ARM_GOT_PREL
, /* type */
1389 2, /* size (0 = byte, 1 = short, 2 = long) */
1391 TRUE
, /* pc_relative */
1393 complain_overflow_dont
, /* complain_on_overflow */
1394 bfd_elf_generic_reloc
, /* special_function */
1395 "R_ARM_GOT_PREL", /* name */
1396 FALSE
, /* partial_inplace */
1397 0xffffffff, /* src_mask */
1398 0xffffffff, /* dst_mask */
1399 TRUE
), /* pcrel_offset */
1401 HOWTO (R_ARM_GOT_BREL12
, /* type */
1403 2, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE
, /* pc_relative */
1407 complain_overflow_bitfield
,/* complain_on_overflow */
1408 bfd_elf_generic_reloc
, /* special_function */
1409 "R_ARM_GOT_BREL12", /* name */
1410 FALSE
, /* partial_inplace */
1411 0x00000fff, /* src_mask */
1412 0x00000fff, /* dst_mask */
1413 FALSE
), /* pcrel_offset */
1415 HOWTO (R_ARM_GOTOFF12
, /* type */
1417 2, /* size (0 = byte, 1 = short, 2 = long) */
1419 FALSE
, /* pc_relative */
1421 complain_overflow_bitfield
,/* complain_on_overflow */
1422 bfd_elf_generic_reloc
, /* special_function */
1423 "R_ARM_GOTOFF12", /* name */
1424 FALSE
, /* partial_inplace */
1425 0x00000fff, /* src_mask */
1426 0x00000fff, /* dst_mask */
1427 FALSE
), /* pcrel_offset */
1429 EMPTY_HOWTO (R_ARM_GOTRELAX
), /* reserved for future GOT-load optimizations */
1431 /* GNU extension to record C++ vtable member usage */
1432 HOWTO (R_ARM_GNU_VTENTRY
, /* type */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 FALSE
, /* pc_relative */
1438 complain_overflow_dont
, /* complain_on_overflow */
1439 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
1440 "R_ARM_GNU_VTENTRY", /* name */
1441 FALSE
, /* partial_inplace */
1444 FALSE
), /* pcrel_offset */
1446 /* GNU extension to record C++ vtable hierarchy */
1447 HOWTO (R_ARM_GNU_VTINHERIT
, /* type */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE
, /* pc_relative */
1453 complain_overflow_dont
, /* complain_on_overflow */
1454 NULL
, /* special_function */
1455 "R_ARM_GNU_VTINHERIT", /* name */
1456 FALSE
, /* partial_inplace */
1459 FALSE
), /* pcrel_offset */
1461 HOWTO (R_ARM_THM_JUMP11
, /* type */
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 TRUE
, /* pc_relative */
1467 complain_overflow_signed
, /* complain_on_overflow */
1468 bfd_elf_generic_reloc
, /* special_function */
1469 "R_ARM_THM_JUMP11", /* name */
1470 FALSE
, /* partial_inplace */
1471 0x000007ff, /* src_mask */
1472 0x000007ff, /* dst_mask */
1473 TRUE
), /* pcrel_offset */
1475 HOWTO (R_ARM_THM_JUMP8
, /* type */
1477 1, /* size (0 = byte, 1 = short, 2 = long) */
1479 TRUE
, /* pc_relative */
1481 complain_overflow_signed
, /* complain_on_overflow */
1482 bfd_elf_generic_reloc
, /* special_function */
1483 "R_ARM_THM_JUMP8", /* name */
1484 FALSE
, /* partial_inplace */
1485 0x000000ff, /* src_mask */
1486 0x000000ff, /* dst_mask */
1487 TRUE
), /* pcrel_offset */
1489 /* TLS relocations */
1490 HOWTO (R_ARM_TLS_GD32
, /* type */
1492 2, /* size (0 = byte, 1 = short, 2 = long) */
1494 FALSE
, /* pc_relative */
1496 complain_overflow_bitfield
,/* complain_on_overflow */
1497 NULL
, /* special_function */
1498 "R_ARM_TLS_GD32", /* name */
1499 TRUE
, /* partial_inplace */
1500 0xffffffff, /* src_mask */
1501 0xffffffff, /* dst_mask */
1502 FALSE
), /* pcrel_offset */
1504 HOWTO (R_ARM_TLS_LDM32
, /* type */
1506 2, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE
, /* pc_relative */
1510 complain_overflow_bitfield
,/* complain_on_overflow */
1511 bfd_elf_generic_reloc
, /* special_function */
1512 "R_ARM_TLS_LDM32", /* name */
1513 TRUE
, /* partial_inplace */
1514 0xffffffff, /* src_mask */
1515 0xffffffff, /* dst_mask */
1516 FALSE
), /* pcrel_offset */
1518 HOWTO (R_ARM_TLS_LDO32
, /* type */
1520 2, /* size (0 = byte, 1 = short, 2 = long) */
1522 FALSE
, /* pc_relative */
1524 complain_overflow_bitfield
,/* complain_on_overflow */
1525 bfd_elf_generic_reloc
, /* special_function */
1526 "R_ARM_TLS_LDO32", /* name */
1527 TRUE
, /* partial_inplace */
1528 0xffffffff, /* src_mask */
1529 0xffffffff, /* dst_mask */
1530 FALSE
), /* pcrel_offset */
1532 HOWTO (R_ARM_TLS_IE32
, /* type */
1534 2, /* size (0 = byte, 1 = short, 2 = long) */
1536 FALSE
, /* pc_relative */
1538 complain_overflow_bitfield
,/* complain_on_overflow */
1539 NULL
, /* special_function */
1540 "R_ARM_TLS_IE32", /* name */
1541 TRUE
, /* partial_inplace */
1542 0xffffffff, /* src_mask */
1543 0xffffffff, /* dst_mask */
1544 FALSE
), /* pcrel_offset */
1546 HOWTO (R_ARM_TLS_LE32
, /* type */
1548 2, /* size (0 = byte, 1 = short, 2 = long) */
1550 FALSE
, /* pc_relative */
1552 complain_overflow_bitfield
,/* complain_on_overflow */
1553 bfd_elf_generic_reloc
, /* special_function */
1554 "R_ARM_TLS_LE32", /* name */
1555 TRUE
, /* partial_inplace */
1556 0xffffffff, /* src_mask */
1557 0xffffffff, /* dst_mask */
1558 FALSE
), /* pcrel_offset */
1560 HOWTO (R_ARM_TLS_LDO12
, /* type */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE
, /* pc_relative */
1566 complain_overflow_bitfield
,/* complain_on_overflow */
1567 bfd_elf_generic_reloc
, /* special_function */
1568 "R_ARM_TLS_LDO12", /* name */
1569 FALSE
, /* partial_inplace */
1570 0x00000fff, /* src_mask */
1571 0x00000fff, /* dst_mask */
1572 FALSE
), /* pcrel_offset */
1574 HOWTO (R_ARM_TLS_LE12
, /* type */
1576 2, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE
, /* pc_relative */
1580 complain_overflow_bitfield
,/* complain_on_overflow */
1581 bfd_elf_generic_reloc
, /* special_function */
1582 "R_ARM_TLS_LE12", /* name */
1583 FALSE
, /* partial_inplace */
1584 0x00000fff, /* src_mask */
1585 0x00000fff, /* dst_mask */
1586 FALSE
), /* pcrel_offset */
1588 HOWTO (R_ARM_TLS_IE12GP
, /* type */
1590 2, /* size (0 = byte, 1 = short, 2 = long) */
1592 FALSE
, /* pc_relative */
1594 complain_overflow_bitfield
,/* complain_on_overflow */
1595 bfd_elf_generic_reloc
, /* special_function */
1596 "R_ARM_TLS_IE12GP", /* name */
1597 FALSE
, /* partial_inplace */
1598 0x00000fff, /* src_mask */
1599 0x00000fff, /* dst_mask */
1600 FALSE
), /* pcrel_offset */
1603 /* 112-127 private relocations
1604 128 R_ARM_ME_TOO, obsolete
1605 129-255 unallocated in AAELF.
1607 249-255 extended, currently unused, relocations: */
1609 static reloc_howto_type elf32_arm_howto_table_2
[4] =
1611 HOWTO (R_ARM_RREL32
, /* type */
1613 0, /* size (0 = byte, 1 = short, 2 = long) */
1615 FALSE
, /* pc_relative */
1617 complain_overflow_dont
,/* complain_on_overflow */
1618 bfd_elf_generic_reloc
, /* special_function */
1619 "R_ARM_RREL32", /* name */
1620 FALSE
, /* partial_inplace */
1623 FALSE
), /* pcrel_offset */
1625 HOWTO (R_ARM_RABS32
, /* type */
1627 0, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE
, /* pc_relative */
1631 complain_overflow_dont
,/* complain_on_overflow */
1632 bfd_elf_generic_reloc
, /* special_function */
1633 "R_ARM_RABS32", /* name */
1634 FALSE
, /* partial_inplace */
1637 FALSE
), /* pcrel_offset */
1639 HOWTO (R_ARM_RPC24
, /* type */
1641 0, /* size (0 = byte, 1 = short, 2 = long) */
1643 FALSE
, /* pc_relative */
1645 complain_overflow_dont
,/* complain_on_overflow */
1646 bfd_elf_generic_reloc
, /* special_function */
1647 "R_ARM_RPC24", /* name */
1648 FALSE
, /* partial_inplace */
1651 FALSE
), /* pcrel_offset */
1653 HOWTO (R_ARM_RBASE
, /* type */
1655 0, /* size (0 = byte, 1 = short, 2 = long) */
1657 FALSE
, /* pc_relative */
1659 complain_overflow_dont
,/* complain_on_overflow */
1660 bfd_elf_generic_reloc
, /* special_function */
1661 "R_ARM_RBASE", /* name */
1662 FALSE
, /* partial_inplace */
1665 FALSE
) /* pcrel_offset */
1668 static reloc_howto_type
*
1669 elf32_arm_howto_from_type (unsigned int r_type
)
1671 if (r_type
< NUM_ELEM (elf32_arm_howto_table_1
))
1672 return &elf32_arm_howto_table_1
[r_type
];
1674 if (r_type
>= R_ARM_RREL32
1675 && r_type
< R_ARM_RREL32
+ NUM_ELEM (elf32_arm_howto_table_2
))
1676 return &elf32_arm_howto_table_2
[r_type
- R_ARM_RREL32
];
1682 elf32_arm_info_to_howto (bfd
* abfd ATTRIBUTE_UNUSED
, arelent
* bfd_reloc
,
1683 Elf_Internal_Rela
* elf_reloc
)
1685 unsigned int r_type
;
1687 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1688 bfd_reloc
->howto
= elf32_arm_howto_from_type (r_type
);
1691 struct elf32_arm_reloc_map
1693 bfd_reloc_code_real_type bfd_reloc_val
;
1694 unsigned char elf_reloc_val
;
1697 /* All entries in this list must also be present in elf32_arm_howto_table. */
1698 static const struct elf32_arm_reloc_map elf32_arm_reloc_map
[] =
1700 {BFD_RELOC_NONE
, R_ARM_NONE
},
1701 {BFD_RELOC_ARM_PCREL_BRANCH
, R_ARM_PC24
},
1702 {BFD_RELOC_ARM_PCREL_CALL
, R_ARM_CALL
},
1703 {BFD_RELOC_ARM_PCREL_JUMP
, R_ARM_JUMP24
},
1704 {BFD_RELOC_ARM_PCREL_BLX
, R_ARM_XPC25
},
1705 {BFD_RELOC_THUMB_PCREL_BLX
, R_ARM_THM_XPC22
},
1706 {BFD_RELOC_32
, R_ARM_ABS32
},
1707 {BFD_RELOC_32_PCREL
, R_ARM_REL32
},
1708 {BFD_RELOC_8
, R_ARM_ABS8
},
1709 {BFD_RELOC_16
, R_ARM_ABS16
},
1710 {BFD_RELOC_ARM_OFFSET_IMM
, R_ARM_ABS12
},
1711 {BFD_RELOC_ARM_THUMB_OFFSET
, R_ARM_THM_ABS5
},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH25
, R_ARM_THM_JUMP24
},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH23
, R_ARM_THM_CALL
},
1714 {BFD_RELOC_THUMB_PCREL_BRANCH12
, R_ARM_THM_JUMP11
},
1715 {BFD_RELOC_THUMB_PCREL_BRANCH20
, R_ARM_THM_JUMP19
},
1716 {BFD_RELOC_THUMB_PCREL_BRANCH9
, R_ARM_THM_JUMP8
},
1717 {BFD_RELOC_THUMB_PCREL_BRANCH7
, R_ARM_THM_JUMP6
},
1718 {BFD_RELOC_ARM_GLOB_DAT
, R_ARM_GLOB_DAT
},
1719 {BFD_RELOC_ARM_JUMP_SLOT
, R_ARM_JUMP_SLOT
},
1720 {BFD_RELOC_ARM_RELATIVE
, R_ARM_RELATIVE
},
1721 {BFD_RELOC_ARM_GOTOFF
, R_ARM_GOTOFF32
},
1722 {BFD_RELOC_ARM_GOTPC
, R_ARM_GOTPC
},
1723 {BFD_RELOC_ARM_GOT32
, R_ARM_GOT32
},
1724 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1725 {BFD_RELOC_ARM_TARGET1
, R_ARM_TARGET1
},
1726 {BFD_RELOC_ARM_ROSEGREL32
, R_ARM_ROSEGREL32
},
1727 {BFD_RELOC_ARM_SBREL32
, R_ARM_SBREL32
},
1728 {BFD_RELOC_ARM_PREL31
, R_ARM_PREL31
},
1729 {BFD_RELOC_ARM_TARGET2
, R_ARM_TARGET2
},
1730 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1731 {BFD_RELOC_ARM_TLS_GD32
, R_ARM_TLS_GD32
},
1732 {BFD_RELOC_ARM_TLS_LDO32
, R_ARM_TLS_LDO32
},
1733 {BFD_RELOC_ARM_TLS_LDM32
, R_ARM_TLS_LDM32
},
1734 {BFD_RELOC_ARM_TLS_DTPMOD32
, R_ARM_TLS_DTPMOD32
},
1735 {BFD_RELOC_ARM_TLS_DTPOFF32
, R_ARM_TLS_DTPOFF32
},
1736 {BFD_RELOC_ARM_TLS_TPOFF32
, R_ARM_TLS_TPOFF32
},
1737 {BFD_RELOC_ARM_TLS_IE32
, R_ARM_TLS_IE32
},
1738 {BFD_RELOC_ARM_TLS_LE32
, R_ARM_TLS_LE32
},
1739 {BFD_RELOC_VTABLE_INHERIT
, R_ARM_GNU_VTINHERIT
},
1740 {BFD_RELOC_VTABLE_ENTRY
, R_ARM_GNU_VTENTRY
},
1741 {BFD_RELOC_ARM_MOVW
, R_ARM_MOVW_ABS_NC
},
1742 {BFD_RELOC_ARM_MOVT
, R_ARM_MOVT_ABS
},
1743 {BFD_RELOC_ARM_MOVW_PCREL
, R_ARM_MOVW_PREL_NC
},
1744 {BFD_RELOC_ARM_MOVT_PCREL
, R_ARM_MOVT_PREL
},
1745 {BFD_RELOC_ARM_THUMB_MOVW
, R_ARM_THM_MOVW_ABS_NC
},
1746 {BFD_RELOC_ARM_THUMB_MOVT
, R_ARM_THM_MOVT_ABS
},
1747 {BFD_RELOC_ARM_THUMB_MOVW_PCREL
, R_ARM_THM_MOVW_PREL_NC
},
1748 {BFD_RELOC_ARM_THUMB_MOVT_PCREL
, R_ARM_THM_MOVT_PREL
},
1749 {BFD_RELOC_ARM_ALU_PC_G0_NC
, R_ARM_ALU_PC_G0_NC
},
1750 {BFD_RELOC_ARM_ALU_PC_G0
, R_ARM_ALU_PC_G0
},
1751 {BFD_RELOC_ARM_ALU_PC_G1_NC
, R_ARM_ALU_PC_G1_NC
},
1752 {BFD_RELOC_ARM_ALU_PC_G1
, R_ARM_ALU_PC_G1
},
1753 {BFD_RELOC_ARM_ALU_PC_G2
, R_ARM_ALU_PC_G2
},
1754 {BFD_RELOC_ARM_LDR_PC_G0
, R_ARM_LDR_PC_G0
},
1755 {BFD_RELOC_ARM_LDR_PC_G1
, R_ARM_LDR_PC_G1
},
1756 {BFD_RELOC_ARM_LDR_PC_G2
, R_ARM_LDR_PC_G2
},
1757 {BFD_RELOC_ARM_LDRS_PC_G0
, R_ARM_LDRS_PC_G0
},
1758 {BFD_RELOC_ARM_LDRS_PC_G1
, R_ARM_LDRS_PC_G1
},
1759 {BFD_RELOC_ARM_LDRS_PC_G2
, R_ARM_LDRS_PC_G2
},
1760 {BFD_RELOC_ARM_LDC_PC_G0
, R_ARM_LDC_PC_G0
},
1761 {BFD_RELOC_ARM_LDC_PC_G1
, R_ARM_LDC_PC_G1
},
1762 {BFD_RELOC_ARM_LDC_PC_G2
, R_ARM_LDC_PC_G2
},
1763 {BFD_RELOC_ARM_ALU_SB_G0_NC
, R_ARM_ALU_SB_G0_NC
},
1764 {BFD_RELOC_ARM_ALU_SB_G0
, R_ARM_ALU_SB_G0
},
1765 {BFD_RELOC_ARM_ALU_SB_G1_NC
, R_ARM_ALU_SB_G1_NC
},
1766 {BFD_RELOC_ARM_ALU_SB_G1
, R_ARM_ALU_SB_G1
},
1767 {BFD_RELOC_ARM_ALU_SB_G2
, R_ARM_ALU_SB_G2
},
1768 {BFD_RELOC_ARM_LDR_SB_G0
, R_ARM_LDR_SB_G0
},
1769 {BFD_RELOC_ARM_LDR_SB_G1
, R_ARM_LDR_SB_G1
},
1770 {BFD_RELOC_ARM_LDR_SB_G2
, R_ARM_LDR_SB_G2
},
1771 {BFD_RELOC_ARM_LDRS_SB_G0
, R_ARM_LDRS_SB_G0
},
1772 {BFD_RELOC_ARM_LDRS_SB_G1
, R_ARM_LDRS_SB_G1
},
1773 {BFD_RELOC_ARM_LDRS_SB_G2
, R_ARM_LDRS_SB_G2
},
1774 {BFD_RELOC_ARM_LDC_SB_G0
, R_ARM_LDC_SB_G0
},
1775 {BFD_RELOC_ARM_LDC_SB_G1
, R_ARM_LDC_SB_G1
},
1776 {BFD_RELOC_ARM_LDC_SB_G2
, R_ARM_LDC_SB_G2
}
1779 static reloc_howto_type
*
1780 elf32_arm_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1781 bfd_reloc_code_real_type code
)
1784 for (i
= 0; i
< NUM_ELEM (elf32_arm_reloc_map
); i
++)
1785 if (elf32_arm_reloc_map
[i
].bfd_reloc_val
== code
)
1786 return elf32_arm_howto_from_type (elf32_arm_reloc_map
[i
].elf_reloc_val
);
1791 /* 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 CONST_STRNEQ (name
, ".rel") && strcmp (s
->name
, name
+ 4) == 0;
2226 return CONST_STRNEQ (name
, ".rela") && 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
);
3629 case R_ARM_ABS32_NOI
:
3631 case R_ARM_REL32_NOI
:
3637 /* r_symndx will be zero only for relocs against symbols
3638 from removed linkonce sections, or sections discarded by
3641 return bfd_reloc_ok
;
3643 /* Handle relocations which should use the PLT entry. ABS32/REL32
3644 will use the symbol's value, which may point to a PLT entry, but we
3645 don't need to handle that here. If we created a PLT entry, all
3646 branches in this object should go to it. */
3647 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
3648 && r_type
!= R_ARM_ABS32_NOI
&& r_type
!= R_ARM_REL32_NOI
)
3651 && h
->plt
.offset
!= (bfd_vma
) -1)
3653 /* If we've created a .plt section, and assigned a PLT entry to
3654 this function, it should not be known to bind locally. If
3655 it were, we would have cleared the PLT entry. */
3656 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
3658 value
= (splt
->output_section
->vma
3659 + splt
->output_offset
3661 *unresolved_reloc_p
= FALSE
;
3662 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3663 contents
, rel
->r_offset
, value
,
3667 /* When generating a shared object or relocatable executable, these
3668 relocations are copied into the output file to be resolved at
3670 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
3671 && (input_section
->flags
& SEC_ALLOC
)
3672 && ((r_type
!= R_ARM_REL32
&& r_type
!= R_ARM_REL32_NOI
)
3673 || !SYMBOL_CALLS_LOCAL (info
, h
))
3675 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
3676 || h
->root
.type
!= bfd_link_hash_undefweak
)
3677 && r_type
!= R_ARM_PC24
3678 && r_type
!= R_ARM_CALL
3679 && r_type
!= R_ARM_JUMP24
3680 && r_type
!= R_ARM_PREL31
3681 && r_type
!= R_ARM_PLT32
)
3683 Elf_Internal_Rela outrel
;
3685 bfd_boolean skip
, relocate
;
3687 *unresolved_reloc_p
= FALSE
;
3693 name
= (bfd_elf_string_from_elf_section
3695 elf_elfheader (input_bfd
)->e_shstrndx
,
3696 elf_section_data (input_section
)->rel_hdr
.sh_name
));
3698 return bfd_reloc_notsupported
;
3700 BFD_ASSERT (reloc_section_p (globals
, name
, input_section
));
3702 sreloc
= bfd_get_section_by_name (dynobj
, name
);
3703 BFD_ASSERT (sreloc
!= NULL
);
3709 outrel
.r_addend
= addend
;
3711 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3713 if (outrel
.r_offset
== (bfd_vma
) -1)
3715 else if (outrel
.r_offset
== (bfd_vma
) -2)
3716 skip
= TRUE
, relocate
= TRUE
;
3717 outrel
.r_offset
+= (input_section
->output_section
->vma
3718 + input_section
->output_offset
);
3721 memset (&outrel
, 0, sizeof outrel
);
3726 || !h
->def_regular
))
3727 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
3732 /* This symbol is local, or marked to become local. */
3733 if (sym_flags
== STT_ARM_TFUNC
)
3735 if (globals
->symbian_p
)
3739 /* On Symbian OS, the data segment and text segement
3740 can be relocated independently. Therefore, we
3741 must indicate the segment to which this
3742 relocation is relative. The BPABI allows us to
3743 use any symbol in the right segment; we just use
3744 the section symbol as it is convenient. (We
3745 cannot use the symbol given by "h" directly as it
3746 will not appear in the dynamic symbol table.)
3748 Note that the dynamic linker ignores the section
3749 symbol value, so we don't subtract osec->vma
3750 from the emitted reloc addend. */
3752 osec
= sym_sec
->output_section
;
3754 osec
= input_section
->output_section
;
3755 symbol
= elf_section_data (osec
)->dynindx
;
3758 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
3760 if ((osec
->flags
& SEC_READONLY
) == 0
3761 && htab
->data_index_section
!= NULL
)
3762 osec
= htab
->data_index_section
;
3764 osec
= htab
->text_index_section
;
3765 symbol
= elf_section_data (osec
)->dynindx
;
3767 BFD_ASSERT (symbol
!= 0);
3770 /* On SVR4-ish systems, the dynamic loader cannot
3771 relocate the text and data segments independently,
3772 so the symbol does not matter. */
3774 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
3775 if (globals
->use_rel
)
3778 outrel
.r_addend
+= value
;
3781 loc
= sreloc
->contents
;
3782 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
3783 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
3785 /* If this reloc is against an external symbol, we do not want to
3786 fiddle with the addend. Otherwise, we need to include the symbol
3787 value so that it becomes an addend for the dynamic reloc. */
3789 return bfd_reloc_ok
;
3791 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3792 contents
, rel
->r_offset
, value
,
3795 else switch (r_type
)
3798 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
3800 case R_ARM_XPC25
: /* Arm BLX instruction. */
3803 case R_ARM_PC24
: /* Arm B/BL instruction */
3805 if (r_type
== R_ARM_XPC25
)
3807 /* Check for Arm calling Arm function. */
3808 /* FIXME: Should we translate the instruction into a BL
3809 instruction instead ? */
3810 if (sym_flags
!= STT_ARM_TFUNC
)
3811 (*_bfd_error_handler
)
3812 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
3814 h
? h
->root
.root
.string
: "(local)");
3816 else if (r_type
!= R_ARM_CALL
|| !globals
->use_blx
)
3818 /* Check for Arm calling Thumb function. */
3819 if (sym_flags
== STT_ARM_TFUNC
)
3821 elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
3822 output_bfd
, input_section
,
3823 hit_data
, sym_sec
, rel
->r_offset
,
3824 signed_addend
, value
);
3825 return bfd_reloc_ok
;
3829 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
3831 S is the address of the symbol in the relocation.
3832 P is address of the instruction being relocated.
3833 A is the addend (extracted from the instruction) in bytes.
3835 S is held in 'value'.
3836 P is the base address of the section containing the
3837 instruction plus the offset of the reloc into that
3839 (input_section->output_section->vma +
3840 input_section->output_offset +
3842 A is the addend, converted into bytes, ie:
3845 Note: None of these operations have knowledge of the pipeline
3846 size of the processor, thus it is up to the assembler to
3847 encode this information into the addend. */
3848 value
-= (input_section
->output_section
->vma
3849 + input_section
->output_offset
);
3850 value
-= rel
->r_offset
;
3851 if (globals
->use_rel
)
3852 value
+= (signed_addend
<< howto
->size
);
3854 /* RELA addends do not have to be adjusted by howto->size. */
3855 value
+= signed_addend
;
3857 signed_addend
= value
;
3858 signed_addend
>>= howto
->rightshift
;
3860 /* It is not an error for an undefined weak reference to be
3861 out of range. Any program that branches to such a symbol
3862 is going to crash anyway, so there is no point worrying
3863 about getting the destination exactly right. */
3864 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3866 /* Perform a signed range check. */
3867 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
3868 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
3869 return bfd_reloc_overflow
;
3872 addend
= (value
& 2);
3874 value
= (signed_addend
& howto
->dst_mask
)
3875 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
3877 /* Set the H bit in the BLX instruction. */
3878 if (sym_flags
== STT_ARM_TFUNC
)
3883 value
&= ~(bfd_vma
)(1 << 24);
3885 if (r_type
== R_ARM_CALL
)
3887 /* Select the correct instruction (BL or BLX). */
3888 if (sym_flags
== STT_ARM_TFUNC
)
3892 value
&= ~(bfd_vma
)(1 << 28);
3900 if (sym_flags
== STT_ARM_TFUNC
)
3904 case R_ARM_ABS32_NOI
:
3910 if (sym_flags
== STT_ARM_TFUNC
)
3912 value
-= (input_section
->output_section
->vma
3913 + input_section
->output_offset
+ rel
->r_offset
);
3916 case R_ARM_REL32_NOI
:
3918 value
-= (input_section
->output_section
->vma
3919 + input_section
->output_offset
+ rel
->r_offset
);
3923 value
-= (input_section
->output_section
->vma
3924 + input_section
->output_offset
+ rel
->r_offset
);
3925 value
+= signed_addend
;
3926 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3928 /* Check for overflow */
3929 if ((value
^ (value
>> 1)) & (1 << 30))
3930 return bfd_reloc_overflow
;
3932 value
&= 0x7fffffff;
3933 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
3934 if (sym_flags
== STT_ARM_TFUNC
)
3939 bfd_put_32 (input_bfd
, value
, hit_data
);
3940 return bfd_reloc_ok
;
3944 if ((long) value
> 0x7f || (long) value
< -0x80)
3945 return bfd_reloc_overflow
;
3947 bfd_put_8 (input_bfd
, value
, hit_data
);
3948 return bfd_reloc_ok
;
3953 if ((long) value
> 0x7fff || (long) value
< -0x8000)
3954 return bfd_reloc_overflow
;
3956 bfd_put_16 (input_bfd
, value
, hit_data
);
3957 return bfd_reloc_ok
;
3959 case R_ARM_THM_ABS5
:
3960 /* Support ldr and str instructions for the thumb. */
3961 if (globals
->use_rel
)
3963 /* Need to refetch addend. */
3964 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
3965 /* ??? Need to determine shift amount from operand size. */
3966 addend
>>= howto
->rightshift
;
3970 /* ??? Isn't value unsigned? */
3971 if ((long) value
> 0x1f || (long) value
< -0x10)
3972 return bfd_reloc_overflow
;
3974 /* ??? Value needs to be properly shifted into place first. */
3975 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
3976 bfd_put_16 (input_bfd
, value
, hit_data
);
3977 return bfd_reloc_ok
;
3979 case R_ARM_THM_ALU_PREL_11_0
:
3980 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
3983 bfd_signed_vma relocation
;
3985 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
3986 | bfd_get_16 (input_bfd
, hit_data
+ 2);
3988 if (globals
->use_rel
)
3990 signed_addend
= (insn
& 0xff) | ((insn
& 0x7000) >> 4)
3991 | ((insn
& (1 << 26)) >> 15);
3992 if (insn
& 0xf00000)
3993 signed_addend
= -signed_addend
;
3996 relocation
= value
+ signed_addend
;
3997 relocation
-= (input_section
->output_section
->vma
3998 + input_section
->output_offset
4001 value
= abs (relocation
);
4003 if (value
>= 0x1000)
4004 return bfd_reloc_overflow
;
4006 insn
= (insn
& 0xfb0f8f00) | (value
& 0xff)
4007 | ((value
& 0x700) << 4)
4008 | ((value
& 0x800) << 15);
4012 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4013 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4015 return bfd_reloc_ok
;
4018 case R_ARM_THM_PC12
:
4019 /* Corresponds to: ldr.w reg, [pc, #offset]. */
4022 bfd_signed_vma relocation
;
4024 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
4025 | bfd_get_16 (input_bfd
, hit_data
+ 2);
4027 if (globals
->use_rel
)
4029 signed_addend
= insn
& 0xfff;
4030 if (!(insn
& (1 << 23)))
4031 signed_addend
= -signed_addend
;
4034 relocation
= value
+ signed_addend
;
4035 relocation
-= (input_section
->output_section
->vma
4036 + input_section
->output_offset
4039 value
= abs (relocation
);
4041 if (value
>= 0x1000)
4042 return bfd_reloc_overflow
;
4044 insn
= (insn
& 0xff7ff000) | value
;
4045 if (relocation
>= 0)
4048 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4049 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4051 return bfd_reloc_ok
;
4054 case R_ARM_THM_XPC22
:
4055 case R_ARM_THM_CALL
:
4056 /* Thumb BL (branch long instruction). */
4059 bfd_boolean overflow
= FALSE
;
4060 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
4061 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
4062 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
4063 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
4065 bfd_signed_vma signed_check
;
4067 /* Need to refetch the addend and squish the two 11 bit pieces
4069 if (globals
->use_rel
)
4071 bfd_vma upper
= upper_insn
& 0x7ff;
4072 bfd_vma lower
= lower_insn
& 0x7ff;
4073 upper
= (upper
^ 0x400) - 0x400; /* Sign extend. */
4074 addend
= (upper
<< 12) | (lower
<< 1);
4075 signed_addend
= addend
;
4078 if (r_type
== R_ARM_THM_XPC22
)
4080 /* Check for Thumb to Thumb call. */
4081 /* FIXME: Should we translate the instruction into a BL
4082 instruction instead ? */
4083 if (sym_flags
== STT_ARM_TFUNC
)
4084 (*_bfd_error_handler
)
4085 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
4087 h
? h
->root
.root
.string
: "(local)");
4091 /* If it is not a call to Thumb, assume call to Arm.
4092 If it is a call relative to a section name, then it is not a
4093 function call at all, but rather a long jump. Calls through
4094 the PLT do not require stubs. */
4095 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
4096 && (h
== NULL
|| splt
== NULL
4097 || h
->plt
.offset
== (bfd_vma
) -1))
4099 if (globals
->use_blx
)
4101 /* Convert BL to BLX. */
4102 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
4104 else if (elf32_thumb_to_arm_stub
4105 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
4106 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
))
4107 return bfd_reloc_ok
;
4109 return bfd_reloc_dangerous
;
4111 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
)
4113 /* Make sure this is a BL. */
4114 lower_insn
|= 0x1800;
4118 /* Handle calls via the PLT. */
4119 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
4121 value
= (splt
->output_section
->vma
4122 + splt
->output_offset
4124 if (globals
->use_blx
)
4126 /* If the Thumb BLX instruction is available, convert the
4127 BL to a BLX instruction to call the ARM-mode PLT entry. */
4128 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
4131 /* Target the Thumb stub before the ARM PLT entry. */
4132 value
-= PLT_THUMB_STUB_SIZE
;
4133 *unresolved_reloc_p
= FALSE
;
4136 relocation
= value
+ signed_addend
;
4138 relocation
-= (input_section
->output_section
->vma
4139 + input_section
->output_offset
4142 check
= relocation
>> howto
->rightshift
;
4144 /* If this is a signed value, the rightshift just dropped
4145 leading 1 bits (assuming twos complement). */
4146 if ((bfd_signed_vma
) relocation
>= 0)
4147 signed_check
= check
;
4149 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
4151 /* Assumes two's complement. */
4152 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4155 if ((lower_insn
& 0x1800) == 0x0800)
4156 /* For a BLX instruction, make sure that the relocation is rounded up
4157 to a word boundary. This follows the semantics of the instruction
4158 which specifies that bit 1 of the target address will come from bit
4159 1 of the base address. */
4160 relocation
= (relocation
+ 2) & ~ 3;
4162 /* Put RELOCATION back into the insn. */
4163 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff) | ((relocation
>> 12) & 0x7ff);
4164 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x7ff) | ((relocation
>> 1) & 0x7ff);
4166 /* Put the relocated value back in the object file: */
4167 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
4168 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
4170 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
4174 case R_ARM_THM_JUMP24
:
4175 /* Thumb32 unconditional branch instruction. */
4178 bfd_boolean overflow
= FALSE
;
4179 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
4180 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
4181 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
4182 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
4184 bfd_signed_vma signed_check
;
4186 /* Need to refetch the addend, reconstruct the top three bits, and glue the
4187 two pieces together. */
4188 if (globals
->use_rel
)
4190 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
4191 bfd_vma hi
= (upper_insn
& 0x03ff);
4192 bfd_vma I1
= (lower_insn
& 0x2000) >> 13;
4193 bfd_vma I2
= (lower_insn
& 0x0800) >> 11;
4194 bfd_vma lo
= (lower_insn
& 0x07ff);
4200 signed_addend
= (S
<< 24) | (I1
<< 23) | (I2
<< 22) | (hi
<< 12) | (lo
<< 1);
4201 signed_addend
-= (1 << 24); /* Sign extend. */
4204 /* ??? Should handle interworking? GCC might someday try to
4205 use this for tail calls. */
4207 relocation
= value
+ signed_addend
;
4208 relocation
-= (input_section
->output_section
->vma
4209 + input_section
->output_offset
4212 check
= relocation
>> howto
->rightshift
;
4214 /* If this is a signed value, the rightshift just dropped
4215 leading 1 bits (assuming twos complement). */
4216 if ((bfd_signed_vma
) relocation
>= 0)
4217 signed_check
= check
;
4219 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
4221 /* Assumes two's complement. */
4222 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4225 /* Put RELOCATION back into the insn. */
4227 bfd_vma S
= (relocation
& 0x01000000) >> 24;
4228 bfd_vma I1
= (relocation
& 0x00800000) >> 23;
4229 bfd_vma I2
= (relocation
& 0x00400000) >> 22;
4230 bfd_vma hi
= (relocation
& 0x003ff000) >> 12;
4231 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
4236 upper_insn
= (upper_insn
& (bfd_vma
) 0xf800) | (S
<< 10) | hi
;
4237 lower_insn
= (lower_insn
& (bfd_vma
) 0xd000) | (I1
<< 13) | (I2
<< 11) | lo
;
4240 /* Put the relocated value back in the object file: */
4241 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
4242 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
4244 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
4247 case R_ARM_THM_JUMP19
:
4248 /* Thumb32 conditional branch instruction. */
4251 bfd_boolean overflow
= FALSE
;
4252 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
4253 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
4254 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
4255 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
4257 bfd_signed_vma signed_check
;
4259 /* Need to refetch the addend, reconstruct the top three bits,
4260 and squish the two 11 bit pieces together. */
4261 if (globals
->use_rel
)
4263 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
4264 bfd_vma upper
= (upper_insn
& 0x001f);
4265 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
4266 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
4267 bfd_vma lower
= (lower_insn
& 0x07ff);
4272 upper
-= 0x0100; /* Sign extend. */
4274 addend
= (upper
<< 12) | (lower
<< 1);
4275 signed_addend
= addend
;
4278 /* ??? Should handle interworking? GCC might someday try to
4279 use this for tail calls. */
4281 relocation
= value
+ signed_addend
;
4282 relocation
-= (input_section
->output_section
->vma
4283 + input_section
->output_offset
4286 check
= relocation
>> howto
->rightshift
;
4288 /* If this is a signed value, the rightshift just dropped
4289 leading 1 bits (assuming twos complement). */
4290 if ((bfd_signed_vma
) relocation
>= 0)
4291 signed_check
= check
;
4293 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
4295 /* Assumes two's complement. */
4296 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4299 /* Put RELOCATION back into the insn. */
4301 bfd_vma S
= (relocation
& 0x00100000) >> 20;
4302 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
4303 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
4304 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
4305 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
4307 upper_insn
= (upper_insn
& 0xfb30) | (S
<< 10) | hi
;
4308 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
4311 /* Put the relocated value back in the object file: */
4312 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
4313 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
4315 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
4318 case R_ARM_THM_JUMP11
:
4319 case R_ARM_THM_JUMP8
:
4320 case R_ARM_THM_JUMP6
:
4321 /* Thumb B (branch) instruction). */
4323 bfd_signed_vma relocation
;
4324 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
4325 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
4326 bfd_signed_vma signed_check
;
4328 /* CZB cannot jump backward. */
4329 if (r_type
== R_ARM_THM_JUMP6
)
4330 reloc_signed_min
= 0;
4332 if (globals
->use_rel
)
4334 /* Need to refetch addend. */
4335 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
4336 if (addend
& ((howto
->src_mask
+ 1) >> 1))
4339 signed_addend
&= ~ howto
->src_mask
;
4340 signed_addend
|= addend
;
4343 signed_addend
= addend
;
4344 /* The value in the insn has been right shifted. We need to
4345 undo this, so that we can perform the address calculation
4346 in terms of bytes. */
4347 signed_addend
<<= howto
->rightshift
;
4349 relocation
= value
+ signed_addend
;
4351 relocation
-= (input_section
->output_section
->vma
4352 + input_section
->output_offset
4355 relocation
>>= howto
->rightshift
;
4356 signed_check
= relocation
;
4358 if (r_type
== R_ARM_THM_JUMP6
)
4359 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
4361 relocation
&= howto
->dst_mask
;
4362 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
4364 bfd_put_16 (input_bfd
, relocation
, hit_data
);
4366 /* Assumes two's complement. */
4367 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4368 return bfd_reloc_overflow
;
4370 return bfd_reloc_ok
;
4373 case R_ARM_ALU_PCREL7_0
:
4374 case R_ARM_ALU_PCREL15_8
:
4375 case R_ARM_ALU_PCREL23_15
:
4380 insn
= bfd_get_32 (input_bfd
, hit_data
);
4381 if (globals
->use_rel
)
4383 /* Extract the addend. */
4384 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
4385 signed_addend
= addend
;
4387 relocation
= value
+ signed_addend
;
4389 relocation
-= (input_section
->output_section
->vma
4390 + input_section
->output_offset
4392 insn
= (insn
& ~0xfff)
4393 | ((howto
->bitpos
<< 7) & 0xf00)
4394 | ((relocation
>> howto
->bitpos
) & 0xff);
4395 bfd_put_32 (input_bfd
, value
, hit_data
);
4397 return bfd_reloc_ok
;
4399 case R_ARM_GNU_VTINHERIT
:
4400 case R_ARM_GNU_VTENTRY
:
4401 return bfd_reloc_ok
;
4403 case R_ARM_GOTOFF32
:
4404 /* Relocation is relative to the start of the
4405 global offset table. */
4407 BFD_ASSERT (sgot
!= NULL
);
4409 return bfd_reloc_notsupported
;
4411 /* If we are addressing a Thumb function, we need to adjust the
4412 address by one, so that attempts to call the function pointer will
4413 correctly interpret it as Thumb code. */
4414 if (sym_flags
== STT_ARM_TFUNC
)
4417 /* Note that sgot->output_offset is not involved in this
4418 calculation. We always want the start of .got. If we
4419 define _GLOBAL_OFFSET_TABLE in a different way, as is
4420 permitted by the ABI, we might have to change this
4422 value
-= sgot
->output_section
->vma
;
4423 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4424 contents
, rel
->r_offset
, value
,
4428 /* Use global offset table as symbol value. */
4429 BFD_ASSERT (sgot
!= NULL
);
4432 return bfd_reloc_notsupported
;
4434 *unresolved_reloc_p
= FALSE
;
4435 value
= sgot
->output_section
->vma
;
4436 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4437 contents
, rel
->r_offset
, value
,
4441 case R_ARM_GOT_PREL
:
4442 /* Relocation is to the entry for this symbol in the
4443 global offset table. */
4445 return bfd_reloc_notsupported
;
4452 off
= h
->got
.offset
;
4453 BFD_ASSERT (off
!= (bfd_vma
) -1);
4454 dyn
= globals
->root
.dynamic_sections_created
;
4456 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
4458 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4459 || (ELF_ST_VISIBILITY (h
->other
)
4460 && h
->root
.type
== bfd_link_hash_undefweak
))
4462 /* This is actually a static link, or it is a -Bsymbolic link
4463 and the symbol is defined locally. We must initialize this
4464 entry in the global offset table. Since the offset must
4465 always be a multiple of 4, we use the least significant bit
4466 to record whether we have initialized it already.
4468 When doing a dynamic link, we create a .rel(a).got relocation
4469 entry to initialize the value. This is done in the
4470 finish_dynamic_symbol routine. */
4475 /* If we are addressing a Thumb function, we need to
4476 adjust the address by one, so that attempts to
4477 call the function pointer will correctly
4478 interpret it as Thumb code. */
4479 if (sym_flags
== STT_ARM_TFUNC
)
4482 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
4487 *unresolved_reloc_p
= FALSE
;
4489 value
= sgot
->output_offset
+ off
;
4495 BFD_ASSERT (local_got_offsets
!= NULL
&&
4496 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
4498 off
= local_got_offsets
[r_symndx
];
4500 /* The offset must always be a multiple of 4. We use the
4501 least significant bit to record whether we have already
4502 generated the necessary reloc. */
4507 /* If we are addressing a Thumb function, we need to
4508 adjust the address by one, so that attempts to
4509 call the function pointer will correctly
4510 interpret it as Thumb code. */
4511 if (sym_flags
== STT_ARM_TFUNC
)
4514 if (globals
->use_rel
)
4515 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
4520 Elf_Internal_Rela outrel
;
4523 srelgot
= (bfd_get_section_by_name
4524 (dynobj
, RELOC_SECTION (globals
, ".got")));
4525 BFD_ASSERT (srelgot
!= NULL
);
4527 outrel
.r_addend
= addend
+ value
;
4528 outrel
.r_offset
= (sgot
->output_section
->vma
4529 + sgot
->output_offset
4531 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
4532 loc
= srelgot
->contents
;
4533 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
4534 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4537 local_got_offsets
[r_symndx
] |= 1;
4540 value
= sgot
->output_offset
+ off
;
4542 if (r_type
!= R_ARM_GOT32
)
4543 value
+= sgot
->output_section
->vma
;
4545 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4546 contents
, rel
->r_offset
, value
,
4549 case R_ARM_TLS_LDO32
:
4550 value
= value
- dtpoff_base (info
);
4552 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4553 contents
, rel
->r_offset
, value
,
4556 case R_ARM_TLS_LDM32
:
4560 if (globals
->sgot
== NULL
)
4563 off
= globals
->tls_ldm_got
.offset
;
4569 /* If we don't know the module number, create a relocation
4573 Elf_Internal_Rela outrel
;
4576 if (globals
->srelgot
== NULL
)
4579 outrel
.r_addend
= 0;
4580 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
4581 + globals
->sgot
->output_offset
+ off
);
4582 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
4584 if (globals
->use_rel
)
4585 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4586 globals
->sgot
->contents
+ off
);
4588 loc
= globals
->srelgot
->contents
;
4589 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
4590 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4593 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
4595 globals
->tls_ldm_got
.offset
|= 1;
4598 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
4599 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
4601 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4602 contents
, rel
->r_offset
, value
,
4606 case R_ARM_TLS_GD32
:
4607 case R_ARM_TLS_IE32
:
4613 if (globals
->sgot
== NULL
)
4620 dyn
= globals
->root
.dynamic_sections_created
;
4621 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
4623 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
4625 *unresolved_reloc_p
= FALSE
;
4628 off
= h
->got
.offset
;
4629 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
4633 if (local_got_offsets
== NULL
)
4635 off
= local_got_offsets
[r_symndx
];
4636 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
4639 if (tls_type
== GOT_UNKNOWN
)
4646 bfd_boolean need_relocs
= FALSE
;
4647 Elf_Internal_Rela outrel
;
4648 bfd_byte
*loc
= NULL
;
4651 /* The GOT entries have not been initialized yet. Do it
4652 now, and emit any relocations. If both an IE GOT and a
4653 GD GOT are necessary, we emit the GD first. */
4655 if ((info
->shared
|| indx
!= 0)
4657 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4658 || h
->root
.type
!= bfd_link_hash_undefweak
))
4661 if (globals
->srelgot
== NULL
)
4663 loc
= globals
->srelgot
->contents
;
4664 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
4667 if (tls_type
& GOT_TLS_GD
)
4671 outrel
.r_addend
= 0;
4672 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
4673 + globals
->sgot
->output_offset
4675 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
4677 if (globals
->use_rel
)
4678 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4679 globals
->sgot
->contents
+ cur_off
);
4681 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4682 globals
->srelgot
->reloc_count
++;
4683 loc
+= RELOC_SIZE (globals
);
4686 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
4687 globals
->sgot
->contents
+ cur_off
+ 4);
4690 outrel
.r_addend
= 0;
4691 outrel
.r_info
= ELF32_R_INFO (indx
,
4692 R_ARM_TLS_DTPOFF32
);
4693 outrel
.r_offset
+= 4;
4695 if (globals
->use_rel
)
4696 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4697 globals
->sgot
->contents
+ cur_off
+ 4);
4700 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4701 globals
->srelgot
->reloc_count
++;
4702 loc
+= RELOC_SIZE (globals
);
4707 /* If we are not emitting relocations for a
4708 general dynamic reference, then we must be in a
4709 static link or an executable link with the
4710 symbol binding locally. Mark it as belonging
4711 to module 1, the executable. */
4712 bfd_put_32 (output_bfd
, 1,
4713 globals
->sgot
->contents
+ cur_off
);
4714 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
4715 globals
->sgot
->contents
+ cur_off
+ 4);
4721 if (tls_type
& GOT_TLS_IE
)
4726 outrel
.r_addend
= value
- dtpoff_base (info
);
4728 outrel
.r_addend
= 0;
4729 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
4730 + globals
->sgot
->output_offset
4732 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
4734 if (globals
->use_rel
)
4735 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4736 globals
->sgot
->contents
+ cur_off
);
4738 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4739 globals
->srelgot
->reloc_count
++;
4740 loc
+= RELOC_SIZE (globals
);
4743 bfd_put_32 (output_bfd
, tpoff (info
, value
),
4744 globals
->sgot
->contents
+ cur_off
);
4751 local_got_offsets
[r_symndx
] |= 1;
4754 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
4756 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
4757 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
4759 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4760 contents
, rel
->r_offset
, value
,
4764 case R_ARM_TLS_LE32
:
4767 (*_bfd_error_handler
)
4768 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
4769 input_bfd
, input_section
,
4770 (long) rel
->r_offset
, howto
->name
);
4774 value
= tpoff (info
, value
);
4776 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4777 contents
, rel
->r_offset
, value
,
4781 if (globals
->fix_v4bx
)
4783 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4785 /* Ensure that we have a BX instruction. */
4786 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
4788 /* Preserve Rm (lowest four bits) and the condition code
4789 (highest four bits). Other bits encode MOV PC,Rm. */
4790 insn
= (insn
& 0xf000000f) | 0x01a0f000;
4792 bfd_put_32 (input_bfd
, insn
, hit_data
);
4794 return bfd_reloc_ok
;
4796 case R_ARM_MOVW_ABS_NC
:
4797 case R_ARM_MOVT_ABS
:
4798 case R_ARM_MOVW_PREL_NC
:
4799 case R_ARM_MOVT_PREL
:
4801 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4803 if (globals
->use_rel
)
4805 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
4806 signed_addend
= (addend
^ 0x10000) - 0x10000;
4808 value
+= signed_addend
;
4809 if (sym_flags
== STT_ARM_TFUNC
)
4812 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
4813 value
-= (input_section
->output_section
->vma
4814 + input_section
->output_offset
+ rel
->r_offset
);
4816 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
)
4820 insn
|= value
& 0xfff;
4821 insn
|= (value
& 0xf000) << 4;
4822 bfd_put_32 (input_bfd
, insn
, hit_data
);
4824 return bfd_reloc_ok
;
4826 case R_ARM_THM_MOVW_ABS_NC
:
4827 case R_ARM_THM_MOVT_ABS
:
4828 case R_ARM_THM_MOVW_PREL_NC
:
4829 case R_ARM_THM_MOVT_PREL
:
4833 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
4834 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
4836 if (globals
->use_rel
)
4838 addend
= ((insn
>> 4) & 0xf000)
4839 | ((insn
>> 15) & 0x0800)
4840 | ((insn
>> 4) & 0x0700)
4842 signed_addend
= (addend
^ 0x10000) - 0x10000;
4844 value
+= signed_addend
;
4845 if (sym_flags
== STT_ARM_TFUNC
)
4848 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
4849 value
-= (input_section
->output_section
->vma
4850 + input_section
->output_offset
+ rel
->r_offset
);
4852 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
)
4856 insn
|= (value
& 0xf000) << 4;
4857 insn
|= (value
& 0x0800) << 15;
4858 insn
|= (value
& 0x0700) << 4;
4859 insn
|= (value
& 0x00ff);
4861 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4862 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4864 return bfd_reloc_ok
;
4866 case R_ARM_ALU_PC_G0_NC
:
4867 case R_ARM_ALU_PC_G1_NC
:
4868 case R_ARM_ALU_PC_G0
:
4869 case R_ARM_ALU_PC_G1
:
4870 case R_ARM_ALU_PC_G2
:
4871 case R_ARM_ALU_SB_G0_NC
:
4872 case R_ARM_ALU_SB_G1_NC
:
4873 case R_ARM_ALU_SB_G0
:
4874 case R_ARM_ALU_SB_G1
:
4875 case R_ARM_ALU_SB_G2
:
4877 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4878 bfd_vma pc
= input_section
->output_section
->vma
4879 + input_section
->output_offset
+ rel
->r_offset
;
4880 /* sb should be the origin of the *segment* containing the symbol.
4881 It is not clear how to obtain this OS-dependent value, so we
4882 make an arbitrary choice of zero. */
4886 bfd_signed_vma signed_value
;
4889 /* Determine which group of bits to select. */
4892 case R_ARM_ALU_PC_G0_NC
:
4893 case R_ARM_ALU_PC_G0
:
4894 case R_ARM_ALU_SB_G0_NC
:
4895 case R_ARM_ALU_SB_G0
:
4899 case R_ARM_ALU_PC_G1_NC
:
4900 case R_ARM_ALU_PC_G1
:
4901 case R_ARM_ALU_SB_G1_NC
:
4902 case R_ARM_ALU_SB_G1
:
4906 case R_ARM_ALU_PC_G2
:
4907 case R_ARM_ALU_SB_G2
:
4915 /* If REL, extract the addend from the insn. If RELA, it will
4916 have already been fetched for us. */
4917 if (globals
->use_rel
)
4920 bfd_vma constant
= insn
& 0xff;
4921 bfd_vma rotation
= (insn
& 0xf00) >> 8;
4924 signed_addend
= constant
;
4927 /* Compensate for the fact that in the instruction, the
4928 rotation is stored in multiples of 2 bits. */
4931 /* Rotate "constant" right by "rotation" bits. */
4932 signed_addend
= (constant
>> rotation
) |
4933 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
4936 /* Determine if the instruction is an ADD or a SUB.
4937 (For REL, this determines the sign of the addend.) */
4938 negative
= identify_add_or_sub (insn
);
4941 (*_bfd_error_handler
)
4942 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
4943 input_bfd
, input_section
,
4944 (long) rel
->r_offset
, howto
->name
);
4945 return bfd_reloc_overflow
;
4948 signed_addend
*= negative
;
4951 /* Compute the value (X) to go in the place. */
4952 if (r_type
== R_ARM_ALU_PC_G0_NC
4953 || r_type
== R_ARM_ALU_PC_G1_NC
4954 || r_type
== R_ARM_ALU_PC_G0
4955 || r_type
== R_ARM_ALU_PC_G1
4956 || r_type
== R_ARM_ALU_PC_G2
)
4958 signed_value
= value
- pc
+ signed_addend
;
4960 /* Section base relative. */
4961 signed_value
= value
- sb
+ signed_addend
;
4963 /* If the target symbol is a Thumb function, then set the
4964 Thumb bit in the address. */
4965 if (sym_flags
== STT_ARM_TFUNC
)
4968 /* Calculate the value of the relevant G_n, in encoded
4969 constant-with-rotation format. */
4970 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
4973 /* Check for overflow if required. */
4974 if ((r_type
== R_ARM_ALU_PC_G0
4975 || r_type
== R_ARM_ALU_PC_G1
4976 || r_type
== R_ARM_ALU_PC_G2
4977 || r_type
== R_ARM_ALU_SB_G0
4978 || r_type
== R_ARM_ALU_SB_G1
4979 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
4981 (*_bfd_error_handler
)
4982 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
4983 input_bfd
, input_section
,
4984 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
4985 return bfd_reloc_overflow
;
4988 /* Mask out the value and the ADD/SUB part of the opcode; take care
4989 not to destroy the S bit. */
4992 /* Set the opcode according to whether the value to go in the
4993 place is negative. */
4994 if (signed_value
< 0)
4999 /* Encode the offset. */
5002 bfd_put_32 (input_bfd
, insn
, hit_data
);
5004 return bfd_reloc_ok
;
5006 case R_ARM_LDR_PC_G0
:
5007 case R_ARM_LDR_PC_G1
:
5008 case R_ARM_LDR_PC_G2
:
5009 case R_ARM_LDR_SB_G0
:
5010 case R_ARM_LDR_SB_G1
:
5011 case R_ARM_LDR_SB_G2
:
5013 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5014 bfd_vma pc
= input_section
->output_section
->vma
5015 + input_section
->output_offset
+ rel
->r_offset
;
5016 bfd_vma sb
= 0; /* See note above. */
5018 bfd_signed_vma signed_value
;
5021 /* Determine which groups of bits to calculate. */
5024 case R_ARM_LDR_PC_G0
:
5025 case R_ARM_LDR_SB_G0
:
5029 case R_ARM_LDR_PC_G1
:
5030 case R_ARM_LDR_SB_G1
:
5034 case R_ARM_LDR_PC_G2
:
5035 case R_ARM_LDR_SB_G2
:
5043 /* If REL, extract the addend from the insn. If RELA, it will
5044 have already been fetched for us. */
5045 if (globals
->use_rel
)
5047 int negative
= (insn
& (1 << 23)) ? 1 : -1;
5048 signed_addend
= negative
* (insn
& 0xfff);
5051 /* Compute the value (X) to go in the place. */
5052 if (r_type
== R_ARM_LDR_PC_G0
5053 || r_type
== R_ARM_LDR_PC_G1
5054 || r_type
== R_ARM_LDR_PC_G2
)
5056 signed_value
= value
- pc
+ signed_addend
;
5058 /* Section base relative. */
5059 signed_value
= value
- sb
+ signed_addend
;
5061 /* Calculate the value of the relevant G_{n-1} to obtain
5062 the residual at that stage. */
5063 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
5065 /* Check for overflow. */
5066 if (residual
>= 0x1000)
5068 (*_bfd_error_handler
)
5069 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5070 input_bfd
, input_section
,
5071 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5072 return bfd_reloc_overflow
;
5075 /* Mask out the value and U bit. */
5078 /* Set the U bit if the value to go in the place is non-negative. */
5079 if (signed_value
>= 0)
5082 /* Encode the offset. */
5085 bfd_put_32 (input_bfd
, insn
, hit_data
);
5087 return bfd_reloc_ok
;
5089 case R_ARM_LDRS_PC_G0
:
5090 case R_ARM_LDRS_PC_G1
:
5091 case R_ARM_LDRS_PC_G2
:
5092 case R_ARM_LDRS_SB_G0
:
5093 case R_ARM_LDRS_SB_G1
:
5094 case R_ARM_LDRS_SB_G2
:
5096 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5097 bfd_vma pc
= input_section
->output_section
->vma
5098 + input_section
->output_offset
+ rel
->r_offset
;
5099 bfd_vma sb
= 0; /* See note above. */
5101 bfd_signed_vma signed_value
;
5104 /* Determine which groups of bits to calculate. */
5107 case R_ARM_LDRS_PC_G0
:
5108 case R_ARM_LDRS_SB_G0
:
5112 case R_ARM_LDRS_PC_G1
:
5113 case R_ARM_LDRS_SB_G1
:
5117 case R_ARM_LDRS_PC_G2
:
5118 case R_ARM_LDRS_SB_G2
:
5126 /* If REL, extract the addend from the insn. If RELA, it will
5127 have already been fetched for us. */
5128 if (globals
->use_rel
)
5130 int negative
= (insn
& (1 << 23)) ? 1 : -1;
5131 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
5134 /* Compute the value (X) to go in the place. */
5135 if (r_type
== R_ARM_LDRS_PC_G0
5136 || r_type
== R_ARM_LDRS_PC_G1
5137 || r_type
== R_ARM_LDRS_PC_G2
)
5139 signed_value
= value
- pc
+ signed_addend
;
5141 /* Section base relative. */
5142 signed_value
= value
- sb
+ signed_addend
;
5144 /* Calculate the value of the relevant G_{n-1} to obtain
5145 the residual at that stage. */
5146 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
5148 /* Check for overflow. */
5149 if (residual
>= 0x100)
5151 (*_bfd_error_handler
)
5152 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5153 input_bfd
, input_section
,
5154 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5155 return bfd_reloc_overflow
;
5158 /* Mask out the value and U bit. */
5161 /* Set the U bit if the value to go in the place is non-negative. */
5162 if (signed_value
>= 0)
5165 /* Encode the offset. */
5166 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
5168 bfd_put_32 (input_bfd
, insn
, hit_data
);
5170 return bfd_reloc_ok
;
5172 case R_ARM_LDC_PC_G0
:
5173 case R_ARM_LDC_PC_G1
:
5174 case R_ARM_LDC_PC_G2
:
5175 case R_ARM_LDC_SB_G0
:
5176 case R_ARM_LDC_SB_G1
:
5177 case R_ARM_LDC_SB_G2
:
5179 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5180 bfd_vma pc
= input_section
->output_section
->vma
5181 + input_section
->output_offset
+ rel
->r_offset
;
5182 bfd_vma sb
= 0; /* See note above. */
5184 bfd_signed_vma signed_value
;
5187 /* Determine which groups of bits to calculate. */
5190 case R_ARM_LDC_PC_G0
:
5191 case R_ARM_LDC_SB_G0
:
5195 case R_ARM_LDC_PC_G1
:
5196 case R_ARM_LDC_SB_G1
:
5200 case R_ARM_LDC_PC_G2
:
5201 case R_ARM_LDC_SB_G2
:
5209 /* If REL, extract the addend from the insn. If RELA, it will
5210 have already been fetched for us. */
5211 if (globals
->use_rel
)
5213 int negative
= (insn
& (1 << 23)) ? 1 : -1;
5214 signed_addend
= negative
* ((insn
& 0xff) << 2);
5217 /* Compute the value (X) to go in the place. */
5218 if (r_type
== R_ARM_LDC_PC_G0
5219 || r_type
== R_ARM_LDC_PC_G1
5220 || r_type
== R_ARM_LDC_PC_G2
)
5222 signed_value
= value
- pc
+ signed_addend
;
5224 /* Section base relative. */
5225 signed_value
= value
- sb
+ signed_addend
;
5227 /* Calculate the value of the relevant G_{n-1} to obtain
5228 the residual at that stage. */
5229 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
5231 /* Check for overflow. (The absolute value to go in the place must be
5232 divisible by four and, after having been divided by four, must
5233 fit in eight bits.) */
5234 if ((residual
& 0x3) != 0 || residual
>= 0x400)
5236 (*_bfd_error_handler
)
5237 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5238 input_bfd
, input_section
,
5239 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5240 return bfd_reloc_overflow
;
5243 /* Mask out the value and U bit. */
5246 /* Set the U bit if the value to go in the place is non-negative. */
5247 if (signed_value
>= 0)
5250 /* Encode the offset. */
5251 insn
|= residual
>> 2;
5253 bfd_put_32 (input_bfd
, insn
, hit_data
);
5255 return bfd_reloc_ok
;
5258 return bfd_reloc_notsupported
;
5264 uleb128_size (unsigned int i
)
5276 /* Return TRUE if the attribute has the default value (0/""). */
5278 is_default_attr (aeabi_attribute
*attr
)
5280 if ((attr
->type
& 1) && attr
->i
!= 0)
5282 if ((attr
->type
& 2) && attr
->s
&& *attr
->s
)
5288 /* Return the size of a single attribute. */
5290 eabi_attr_size(int tag
, aeabi_attribute
*attr
)
5294 if (is_default_attr (attr
))
5297 size
= uleb128_size (tag
);
5299 size
+= uleb128_size (attr
->i
);
5301 size
+= strlen ((char *)attr
->s
) + 1;
5305 /* Returns the size of the eabi object attributess section. */
5307 elf32_arm_eabi_attr_size (bfd
*abfd
)
5310 aeabi_attribute
*attr
;
5311 aeabi_attribute_list
*list
;
5314 attr
= elf32_arm_tdata (abfd
)->known_eabi_attributes
;
5315 size
= 16; /* 'A' <size> "aeabi" 0x1 <size>. */
5316 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
5317 size
+= eabi_attr_size (i
, &attr
[i
]);
5319 for (list
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5322 size
+= eabi_attr_size (list
->tag
, &list
->attr
);
5328 write_uleb128 (bfd_byte
*p
, unsigned int val
)
5343 /* Write attribute ATTR to butter P, and return a pointer to the following
5346 write_eabi_attribute (bfd_byte
*p
, int tag
, aeabi_attribute
*attr
)
5348 /* Suppress default entries. */
5349 if (is_default_attr(attr
))
5352 p
= write_uleb128 (p
, tag
);
5354 p
= write_uleb128 (p
, attr
->i
);
5359 len
= strlen (attr
->s
) + 1;
5360 memcpy (p
, attr
->s
, len
);
5367 /* Write the contents of the eabi attributes section to p. */
5369 elf32_arm_set_eabi_attr_contents (bfd
*abfd
, bfd_byte
*contents
, bfd_vma size
)
5372 aeabi_attribute
*attr
;
5373 aeabi_attribute_list
*list
;
5378 bfd_put_32 (abfd
, size
- 1, p
);
5380 memcpy (p
, "aeabi", 6);
5383 bfd_put_32 (abfd
, size
- 11, p
);
5386 attr
= elf32_arm_tdata (abfd
)->known_eabi_attributes
;
5387 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
5388 p
= write_eabi_attribute (p
, i
, &attr
[i
]);
5390 for (list
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5393 p
= write_eabi_attribute (p
, list
->tag
, &list
->attr
);
5396 /* Override final_link to handle EABI object attribute sections. */
5399 elf32_arm_bfd_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
5402 struct bfd_link_order
*p
;
5403 asection
*attr_section
= NULL
;
5407 /* elf32_arm_merge_private_bfd_data will already have merged the
5408 object attributes. Remove the input sections from the link, and set
5409 the contents of the output secton. */
5410 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5412 if (strcmp (o
->name
, ".ARM.attributes") == 0)
5414 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5416 asection
*input_section
;
5418 if (p
->type
!= bfd_indirect_link_order
)
5420 input_section
= p
->u
.indirect
.section
;
5421 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5422 elf_link_input_bfd ignores this section. */
5423 input_section
->flags
&= ~SEC_HAS_CONTENTS
;
5426 size
= elf32_arm_eabi_attr_size (abfd
);
5427 bfd_set_section_size (abfd
, o
, size
);
5429 /* Skip this section later on. */
5430 o
->map_head
.link_order
= NULL
;
5433 /* Invoke the ELF linker to do all the work. */
5434 if (!bfd_elf_final_link (abfd
, info
))
5439 contents
= bfd_malloc(size
);
5440 if (contents
== NULL
)
5442 elf32_arm_set_eabi_attr_contents (abfd
, contents
, size
);
5443 bfd_set_section_contents (abfd
, attr_section
, contents
, 0, size
);
5450 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
5452 arm_add_to_rel (bfd
* abfd
,
5454 reloc_howto_type
* howto
,
5455 bfd_signed_vma increment
)
5457 bfd_signed_vma addend
;
5459 if (howto
->type
== R_ARM_THM_CALL
)
5461 int upper_insn
, lower_insn
;
5464 upper_insn
= bfd_get_16 (abfd
, address
);
5465 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
5466 upper
= upper_insn
& 0x7ff;
5467 lower
= lower_insn
& 0x7ff;
5469 addend
= (upper
<< 12) | (lower
<< 1);
5470 addend
+= increment
;
5473 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
5474 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
5476 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
5477 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
5483 contents
= bfd_get_32 (abfd
, address
);
5485 /* Get the (signed) value from the instruction. */
5486 addend
= contents
& howto
->src_mask
;
5487 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5489 bfd_signed_vma mask
;
5492 mask
&= ~ howto
->src_mask
;
5496 /* Add in the increment, (which is a byte value). */
5497 switch (howto
->type
)
5500 addend
+= increment
;
5507 addend
<<= howto
->size
;
5508 addend
+= increment
;
5510 /* Should we check for overflow here ? */
5512 /* Drop any undesired bits. */
5513 addend
>>= howto
->rightshift
;
5517 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
5519 bfd_put_32 (abfd
, contents
, address
);
5523 #define IS_ARM_TLS_RELOC(R_TYPE) \
5524 ((R_TYPE) == R_ARM_TLS_GD32 \
5525 || (R_TYPE) == R_ARM_TLS_LDO32 \
5526 || (R_TYPE) == R_ARM_TLS_LDM32 \
5527 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
5528 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
5529 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
5530 || (R_TYPE) == R_ARM_TLS_LE32 \
5531 || (R_TYPE) == R_ARM_TLS_IE32)
5533 /* Relocate an ARM ELF section. */
5535 elf32_arm_relocate_section (bfd
* output_bfd
,
5536 struct bfd_link_info
* info
,
5538 asection
* input_section
,
5539 bfd_byte
* contents
,
5540 Elf_Internal_Rela
* relocs
,
5541 Elf_Internal_Sym
* local_syms
,
5542 asection
** local_sections
)
5544 Elf_Internal_Shdr
*symtab_hdr
;
5545 struct elf_link_hash_entry
**sym_hashes
;
5546 Elf_Internal_Rela
*rel
;
5547 Elf_Internal_Rela
*relend
;
5549 struct elf32_arm_link_hash_table
* globals
;
5551 globals
= elf32_arm_hash_table (info
);
5552 if (info
->relocatable
&& !globals
->use_rel
)
5555 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
5556 sym_hashes
= elf_sym_hashes (input_bfd
);
5559 relend
= relocs
+ input_section
->reloc_count
;
5560 for (; rel
< relend
; rel
++)
5563 reloc_howto_type
* howto
;
5564 unsigned long r_symndx
;
5565 Elf_Internal_Sym
* sym
;
5567 struct elf_link_hash_entry
* h
;
5569 bfd_reloc_status_type r
;
5572 bfd_boolean unresolved_reloc
= FALSE
;
5574 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5575 r_type
= ELF32_R_TYPE (rel
->r_info
);
5576 r_type
= arm_real_reloc_type (globals
, r_type
);
5578 if ( r_type
== R_ARM_GNU_VTENTRY
5579 || r_type
== R_ARM_GNU_VTINHERIT
)
5582 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
5583 howto
= bfd_reloc
.howto
;
5585 if (info
->relocatable
&& globals
->use_rel
)
5587 /* This is a relocatable link. We don't have to change
5588 anything, unless the reloc is against a section symbol,
5589 in which case we have to adjust according to where the
5590 section symbol winds up in the output section. */
5591 if (r_symndx
< symtab_hdr
->sh_info
)
5593 sym
= local_syms
+ r_symndx
;
5594 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
5596 sec
= local_sections
[r_symndx
];
5597 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
5599 (bfd_signed_vma
) (sec
->output_offset
5607 /* This is a final link. */
5612 if (r_symndx
< symtab_hdr
->sh_info
)
5614 sym
= local_syms
+ r_symndx
;
5615 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
5616 sec
= local_sections
[r_symndx
];
5617 if (globals
->use_rel
)
5619 relocation
= (sec
->output_section
->vma
5620 + sec
->output_offset
5622 if ((sec
->flags
& SEC_MERGE
)
5623 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
5626 bfd_vma addend
, value
;
5628 if (howto
->rightshift
)
5630 (*_bfd_error_handler
)
5631 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
5632 input_bfd
, input_section
,
5633 (long) rel
->r_offset
, howto
->name
);
5637 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
5639 /* Get the (signed) value from the instruction. */
5640 addend
= value
& howto
->src_mask
;
5641 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5643 bfd_signed_vma mask
;
5646 mask
&= ~ howto
->src_mask
;
5651 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
5653 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
5654 value
= (value
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
5655 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
5659 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
5665 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
5666 r_symndx
, symtab_hdr
, sym_hashes
,
5668 unresolved_reloc
, warned
);
5674 name
= h
->root
.root
.string
;
5677 name
= (bfd_elf_string_from_elf_section
5678 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
5679 if (name
== NULL
|| *name
== '\0')
5680 name
= bfd_section_name (input_bfd
, sec
);
5684 && r_type
!= R_ARM_NONE
5686 || h
->root
.type
== bfd_link_hash_defined
5687 || h
->root
.type
== bfd_link_hash_defweak
)
5688 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
5690 (*_bfd_error_handler
)
5691 ((sym_type
== STT_TLS
5692 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
5693 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
5696 (long) rel
->r_offset
,
5701 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
5702 input_section
, contents
, rel
,
5703 relocation
, info
, sec
, name
,
5704 (h
? ELF_ST_TYPE (h
->type
) :
5705 ELF_ST_TYPE (sym
->st_info
)), h
,
5708 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5709 because such sections are not SEC_ALLOC and thus ld.so will
5710 not process them. */
5711 if (unresolved_reloc
5712 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
5715 (*_bfd_error_handler
)
5716 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5719 (long) rel
->r_offset
,
5721 h
->root
.root
.string
);
5725 if (r
!= bfd_reloc_ok
)
5727 const char * msg
= (const char *) 0;
5731 case bfd_reloc_overflow
:
5732 /* If the overflowing reloc was to an undefined symbol,
5733 we have already printed one error message and there
5734 is no point complaining again. */
5736 h
->root
.type
!= bfd_link_hash_undefined
)
5737 && (!((*info
->callbacks
->reloc_overflow
)
5738 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
5739 (bfd_vma
) 0, input_bfd
, input_section
,
5744 case bfd_reloc_undefined
:
5745 if (!((*info
->callbacks
->undefined_symbol
)
5746 (info
, name
, input_bfd
, input_section
,
5747 rel
->r_offset
, TRUE
)))
5751 case bfd_reloc_outofrange
:
5752 msg
= _("internal error: out of range error");
5755 case bfd_reloc_notsupported
:
5756 msg
= _("internal error: unsupported relocation error");
5759 case bfd_reloc_dangerous
:
5760 msg
= _("internal error: dangerous error");
5764 msg
= _("internal error: unknown error");
5768 if (!((*info
->callbacks
->warning
)
5769 (info
, msg
, name
, input_bfd
, input_section
,
5780 /* Allocate/find an object attribute. */
5781 static aeabi_attribute
*
5782 elf32_arm_new_eabi_attr (bfd
*abfd
, int tag
)
5784 aeabi_attribute
*attr
;
5785 aeabi_attribute_list
*list
;
5786 aeabi_attribute_list
*p
;
5787 aeabi_attribute_list
**lastp
;
5790 if (tag
< NUM_KNOWN_ATTRIBUTES
)
5792 /* Knwon tags are preallocated. */
5793 attr
= &elf32_arm_tdata (abfd
)->known_eabi_attributes
[tag
];
5797 /* Create a new tag. */
5798 list
= (aeabi_attribute_list
*)
5799 bfd_alloc (abfd
, sizeof (aeabi_attribute_list
));
5800 memset (list
, 0, sizeof (aeabi_attribute_list
));
5802 /* Keep the tag list in order. */
5803 lastp
= &elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5804 for (p
= *lastp
; p
; p
= p
->next
)
5810 list
->next
= *lastp
;
5819 elf32_arm_get_eabi_attr_int (bfd
*abfd
, int tag
)
5821 aeabi_attribute_list
*p
;
5823 if (tag
< NUM_KNOWN_ATTRIBUTES
)
5825 /* Knwon tags are preallocated. */
5826 return elf32_arm_tdata (abfd
)->known_eabi_attributes
[tag
].i
;
5830 for (p
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5844 elf32_arm_add_eabi_attr_int (bfd
*abfd
, int tag
, unsigned int i
)
5846 aeabi_attribute
*attr
;
5848 attr
= elf32_arm_new_eabi_attr (abfd
, tag
);
5854 attr_strdup (bfd
*abfd
, const char * s
)
5859 len
= strlen (s
) + 1;
5860 p
= (char *)bfd_alloc(abfd
, len
);
5861 return memcpy (p
, s
, len
);
5865 elf32_arm_add_eabi_attr_string (bfd
*abfd
, int tag
, const char *s
)
5867 aeabi_attribute
*attr
;
5869 attr
= elf32_arm_new_eabi_attr (abfd
, tag
);
5871 attr
->s
= attr_strdup (abfd
, s
);
5875 elf32_arm_add_eabi_attr_compat (bfd
*abfd
, unsigned int i
, const char *s
)
5877 aeabi_attribute_list
*list
;
5878 aeabi_attribute_list
*p
;
5879 aeabi_attribute_list
**lastp
;
5881 list
= (aeabi_attribute_list
*)
5882 bfd_alloc (abfd
, sizeof (aeabi_attribute_list
));
5883 memset (list
, 0, sizeof (aeabi_attribute_list
));
5884 list
->tag
= Tag_compatibility
;
5885 list
->attr
.type
= 3;
5887 list
->attr
.s
= attr_strdup (abfd
, s
);
5889 lastp
= &elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5890 for (p
= *lastp
; p
; p
= p
->next
)
5893 if (p
->tag
!= Tag_compatibility
)
5895 cmp
= strcmp(s
, p
->attr
.s
);
5896 if (cmp
< 0 || (cmp
== 0 && i
< p
->attr
.i
))
5900 list
->next
= *lastp
;
5904 /* Set the right machine number. */
5907 elf32_arm_object_p (bfd
*abfd
)
5911 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
5913 if (mach
!= bfd_mach_arm_unknown
)
5914 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
5916 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
5917 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
5920 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
5925 /* Function to keep ARM specific flags in the ELF header. */
5928 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
5930 if (elf_flags_init (abfd
)
5931 && elf_elfheader (abfd
)->e_flags
!= flags
)
5933 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
5935 if (flags
& EF_ARM_INTERWORK
)
5936 (*_bfd_error_handler
)
5937 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
5941 (_("Warning: Clearing the interworking flag of %B due to outside request"),
5947 elf_elfheader (abfd
)->e_flags
= flags
;
5948 elf_flags_init (abfd
) = TRUE
;
5954 /* Copy the eabi object attribute from IBFD to OBFD. */
5956 copy_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
5958 aeabi_attribute
*in_attr
;
5959 aeabi_attribute
*out_attr
;
5960 aeabi_attribute_list
*list
;
5963 in_attr
= elf32_arm_tdata (ibfd
)->known_eabi_attributes
;
5964 out_attr
= elf32_arm_tdata (obfd
)->known_eabi_attributes
;
5965 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
5967 out_attr
->i
= in_attr
->i
;
5968 if (in_attr
->s
&& *in_attr
->s
)
5969 out_attr
->s
= attr_strdup (obfd
, in_attr
->s
);
5974 for (list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
5978 in_attr
= &list
->attr
;
5979 switch (in_attr
->type
)
5982 elf32_arm_add_eabi_attr_int (obfd
, list
->tag
, in_attr
->i
);
5985 elf32_arm_add_eabi_attr_string (obfd
, list
->tag
, in_attr
->s
);
5988 elf32_arm_add_eabi_attr_compat (obfd
, in_attr
->i
, in_attr
->s
);
5997 /* Copy backend specific data from one object module to another. */
6000 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
6005 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
6006 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
6009 in_flags
= elf_elfheader (ibfd
)->e_flags
;
6010 out_flags
= elf_elfheader (obfd
)->e_flags
;
6012 if (elf_flags_init (obfd
)
6013 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
6014 && in_flags
!= out_flags
)
6016 /* Cannot mix APCS26 and APCS32 code. */
6017 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
6020 /* Cannot mix float APCS and non-float APCS code. */
6021 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
6024 /* If the src and dest have different interworking flags
6025 then turn off the interworking bit. */
6026 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
6028 if (out_flags
& EF_ARM_INTERWORK
)
6030 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
6033 in_flags
&= ~EF_ARM_INTERWORK
;
6036 /* Likewise for PIC, though don't warn for this case. */
6037 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
6038 in_flags
&= ~EF_ARM_PIC
;
6041 elf_elfheader (obfd
)->e_flags
= in_flags
;
6042 elf_flags_init (obfd
) = TRUE
;
6044 /* Also copy the EI_OSABI field. */
6045 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
6046 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
6048 /* Copy EABI object attributes. */
6049 copy_eabi_attributes (ibfd
, obfd
);
6054 /* Values for Tag_ABI_PCS_R9_use. */
6063 /* Values for Tag_ABI_PCS_RW_data. */
6066 AEABI_PCS_RW_data_absolute
,
6067 AEABI_PCS_RW_data_PCrel
,
6068 AEABI_PCS_RW_data_SBrel
,
6069 AEABI_PCS_RW_data_unused
6072 /* Values for Tag_ABI_enum_size. */
6078 AEABI_enum_forced_wide
6081 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
6082 are conflicting attributes. */
6084 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
6086 aeabi_attribute
*in_attr
;
6087 aeabi_attribute
*out_attr
;
6088 aeabi_attribute_list
*in_list
;
6089 aeabi_attribute_list
*out_list
;
6090 /* Some tags have 0 = don't care, 1 = strong requirement,
6091 2 = weak requirement. */
6092 static const int order_312
[3] = {3, 1, 2};
6095 if (!elf32_arm_tdata (ibfd
)->known_eabi_attributes
[0].i
)
6097 /* This is the first object. Copy the attributes. */
6098 copy_eabi_attributes (ibfd
, obfd
);
6102 /* Use the Tag_null value to indicate the attributes have been
6104 elf32_arm_tdata (ibfd
)->known_eabi_attributes
[0].i
= 1;
6106 in_attr
= elf32_arm_tdata (ibfd
)->known_eabi_attributes
;
6107 out_attr
= elf32_arm_tdata (obfd
)->known_eabi_attributes
;
6108 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
6109 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
6111 /* Ignore mismatches if teh object doesn't use floating point. */
6112 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
6113 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
6114 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
6117 (_("ERROR: %B uses VFP register arguments, %B does not"),
6123 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
6125 /* Merge this attribute with existing attributes. */
6128 case Tag_CPU_raw_name
:
6130 /* Use whichever has the greatest architecture requirements. */
6131 if (in_attr
[Tag_CPU_arch
].i
> out_attr
[Tag_CPU_arch
].i
)
6132 out_attr
[i
].s
= attr_strdup(obfd
, in_attr
[i
].s
);
6135 case Tag_ABI_optimization_goals
:
6136 case Tag_ABI_FP_optimization_goals
:
6137 /* Use the first value seen. */
6141 case Tag_ARM_ISA_use
:
6142 case Tag_THUMB_ISA_use
:
6146 /* ??? Do NEON and WMMX conflict? */
6147 case Tag_ABI_FP_rounding
:
6148 case Tag_ABI_FP_denormal
:
6149 case Tag_ABI_FP_exceptions
:
6150 case Tag_ABI_FP_user_exceptions
:
6151 case Tag_ABI_FP_number_model
:
6152 case Tag_ABI_align8_preserved
:
6153 case Tag_ABI_HardFP_use
:
6154 /* Use the largest value specified. */
6155 if (in_attr
[i
].i
> out_attr
[i
].i
)
6156 out_attr
[i
].i
= in_attr
[i
].i
;
6159 case Tag_CPU_arch_profile
:
6160 /* Warn if conflicting architecture profiles used. */
6161 if (out_attr
[i
].i
&& in_attr
[i
].i
&& in_attr
[i
].i
!= out_attr
[i
].i
)
6164 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
6165 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
6169 out_attr
[i
].i
= in_attr
[i
].i
;
6171 case Tag_PCS_config
:
6172 if (out_attr
[i
].i
== 0)
6173 out_attr
[i
].i
= in_attr
[i
].i
;
6174 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
6176 /* It's sometimes ok to mix different configs, so this is only
6179 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
6182 case Tag_ABI_PCS_R9_use
:
6183 if (out_attr
[i
].i
!= AEABI_R9_unused
6184 && in_attr
[i
].i
!= AEABI_R9_unused
)
6187 (_("ERROR: %B: Conflicting use of R9"), ibfd
);
6190 if (out_attr
[i
].i
== AEABI_R9_unused
)
6191 out_attr
[i
].i
= in_attr
[i
].i
;
6193 case Tag_ABI_PCS_RW_data
:
6194 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
6195 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
6196 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
6199 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
6203 /* Use the smallest value specified. */
6204 if (in_attr
[i
].i
< out_attr
[i
].i
)
6205 out_attr
[i
].i
= in_attr
[i
].i
;
6207 case Tag_ABI_PCS_RO_data
:
6208 /* Use the smallest value specified. */
6209 if (in_attr
[i
].i
< out_attr
[i
].i
)
6210 out_attr
[i
].i
= in_attr
[i
].i
;
6212 case Tag_ABI_PCS_GOT_use
:
6213 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
6214 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
6215 out_attr
[i
].i
= in_attr
[i
].i
;
6217 case Tag_ABI_PCS_wchar_t
:
6218 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
)
6221 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd
);
6225 out_attr
[i
].i
= in_attr
[i
].i
;
6227 case Tag_ABI_align8_needed
:
6228 /* ??? Check against Tag_ABI_align8_preserved. */
6229 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
6230 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
6231 out_attr
[i
].i
= in_attr
[i
].i
;
6233 case Tag_ABI_enum_size
:
6234 if (in_attr
[i
].i
!= AEABI_enum_unused
)
6236 if (out_attr
[i
].i
== AEABI_enum_unused
6237 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
6239 /* The existing object is compatible with anything.
6240 Use whatever requirements the new object has. */
6241 out_attr
[i
].i
= in_attr
[i
].i
;
6243 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
6244 && out_attr
[i
].i
!= in_attr
[i
].i
)
6247 (_("ERROR: %B: Conflicting enum sizes"), ibfd
);
6251 case Tag_ABI_VFP_args
:
6254 case Tag_ABI_WMMX_args
:
6255 if (in_attr
[i
].i
!= out_attr
[i
].i
)
6258 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
6263 default: /* All known attributes should be explicitly covered. */
6268 in_list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
6269 out_list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
6270 while (in_list
&& in_list
->tag
== Tag_compatibility
)
6272 in_attr
= &in_list
->attr
;
6273 if (in_attr
->i
== 0)
6275 if (in_attr
->i
== 1)
6278 (_("ERROR: %B: Must be processed by '%s' toolchain"),
6282 if (!out_list
|| out_list
->tag
!= Tag_compatibility
6283 || strcmp (in_attr
->s
, out_list
->attr
.s
) != 0)
6285 /* Add this compatibility tag to the output. */
6286 elf32_arm_add_eabi_attr_compat (obfd
, in_attr
->i
, in_attr
->s
);
6289 out_attr
= &out_list
->attr
;
6290 /* Check all the input tags with the same identifier. */
6293 if (out_list
->tag
!= Tag_compatibility
6294 || in_attr
->i
!= out_attr
->i
6295 || strcmp (in_attr
->s
, out_attr
->s
) != 0)
6298 (_("ERROR: %B: Incompatible object tag '%s':%d"),
6299 ibfd
, in_attr
->s
, in_attr
->i
);
6302 in_list
= in_list
->next
;
6303 if (in_list
->tag
!= Tag_compatibility
6304 || strcmp (in_attr
->s
, in_list
->attr
.s
) != 0)
6306 in_attr
= &in_list
->attr
;
6307 out_list
= out_list
->next
;
6309 out_attr
= &out_list
->attr
;
6312 /* Check the output doesn't have extra tags with this identifier. */
6313 if (out_list
&& out_list
->tag
== Tag_compatibility
6314 && strcmp (in_attr
->s
, out_list
->attr
.s
) == 0)
6317 (_("ERROR: %B: Incompatible object tag '%s':%d"),
6318 ibfd
, in_attr
->s
, out_list
->attr
.i
);
6323 for (; in_list
; in_list
= in_list
->next
)
6325 if ((in_list
->tag
& 128) < 64)
6328 (_("Warning: %B: Unknown EABI object attribute %d"),
6329 ibfd
, in_list
->tag
);
6337 /* Return TRUE if the two EABI versions are incompatible. */
6340 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
6342 /* v4 and v5 are the same spec before and after it was released,
6343 so allow mixing them. */
6344 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
6345 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
6348 return (iver
== over
);
6351 /* Merge backend specific data from an object file to the output
6352 object file when linking. */
6355 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
6359 bfd_boolean flags_compatible
= TRUE
;
6362 /* Check if we have the same endianess. */
6363 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
6366 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
6367 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
6370 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
6373 /* The input BFD must have had its flags initialised. */
6374 /* The following seems bogus to me -- The flags are initialized in
6375 the assembler but I don't think an elf_flags_init field is
6376 written into the object. */
6377 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6379 in_flags
= elf_elfheader (ibfd
)->e_flags
;
6380 out_flags
= elf_elfheader (obfd
)->e_flags
;
6382 if (!elf_flags_init (obfd
))
6384 /* If the input is the default architecture and had the default
6385 flags then do not bother setting the flags for the output
6386 architecture, instead allow future merges to do this. If no
6387 future merges ever set these flags then they will retain their
6388 uninitialised values, which surprise surprise, correspond
6389 to the default values. */
6390 if (bfd_get_arch_info (ibfd
)->the_default
6391 && elf_elfheader (ibfd
)->e_flags
== 0)
6394 elf_flags_init (obfd
) = TRUE
;
6395 elf_elfheader (obfd
)->e_flags
= in_flags
;
6397 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
6398 && bfd_get_arch_info (obfd
)->the_default
)
6399 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
6404 /* Determine what should happen if the input ARM architecture
6405 does not match the output ARM architecture. */
6406 if (! bfd_arm_merge_machines (ibfd
, obfd
))
6409 /* Identical flags must be compatible. */
6410 if (in_flags
== out_flags
)
6413 /* Check to see if the input BFD actually contains any sections. If
6414 not, its flags may not have been initialised either, but it
6415 cannot actually cause any incompatiblity. Do not short-circuit
6416 dynamic objects; their section list may be emptied by
6417 elf_link_add_object_symbols.
6419 Also check to see if there are no code sections in the input.
6420 In this case there is no need to check for code specific flags.
6421 XXX - do we need to worry about floating-point format compatability
6422 in data sections ? */
6423 if (!(ibfd
->flags
& DYNAMIC
))
6425 bfd_boolean null_input_bfd
= TRUE
;
6426 bfd_boolean only_data_sections
= TRUE
;
6428 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6430 /* Ignore synthetic glue sections. */
6431 if (strcmp (sec
->name
, ".glue_7")
6432 && strcmp (sec
->name
, ".glue_7t"))
6434 if ((bfd_get_section_flags (ibfd
, sec
)
6435 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
6436 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
6437 only_data_sections
= FALSE
;
6439 null_input_bfd
= FALSE
;
6444 if (null_input_bfd
|| only_data_sections
)
6448 /* Complain about various flag mismatches. */
6449 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
6450 EF_ARM_EABI_VERSION (out_flags
)))
6453 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
6455 (in_flags
& EF_ARM_EABIMASK
) >> 24,
6456 (out_flags
& EF_ARM_EABIMASK
) >> 24);
6460 /* Not sure what needs to be checked for EABI versions >= 1. */
6461 /* VxWorks libraries do not use these flags. */
6462 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
6463 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
6464 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
6466 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
6469 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
6471 in_flags
& EF_ARM_APCS_26
? 26 : 32,
6472 out_flags
& EF_ARM_APCS_26
? 26 : 32);
6473 flags_compatible
= FALSE
;
6476 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
6478 if (in_flags
& EF_ARM_APCS_FLOAT
)
6480 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
6484 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
6487 flags_compatible
= FALSE
;
6490 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
6492 if (in_flags
& EF_ARM_VFP_FLOAT
)
6494 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
6498 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
6501 flags_compatible
= FALSE
;
6504 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
6506 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
6508 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
6512 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
6515 flags_compatible
= FALSE
;
6518 #ifdef EF_ARM_SOFT_FLOAT
6519 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
6521 /* We can allow interworking between code that is VFP format
6522 layout, and uses either soft float or integer regs for
6523 passing floating point arguments and results. We already
6524 know that the APCS_FLOAT flags match; similarly for VFP
6526 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
6527 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
6529 if (in_flags
& EF_ARM_SOFT_FLOAT
)
6531 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
6535 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
6538 flags_compatible
= FALSE
;
6543 /* Interworking mismatch is only a warning. */
6544 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
6546 if (in_flags
& EF_ARM_INTERWORK
)
6549 (_("Warning: %B supports interworking, whereas %B does not"),
6555 (_("Warning: %B does not support interworking, whereas %B does"),
6561 return flags_compatible
;
6564 /* Display the flags field. */
6567 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
6569 FILE * file
= (FILE *) ptr
;
6570 unsigned long flags
;
6572 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
6574 /* Print normal ELF private data. */
6575 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6577 flags
= elf_elfheader (abfd
)->e_flags
;
6578 /* Ignore init flag - it may not be set, despite the flags field
6579 containing valid data. */
6581 /* xgettext:c-format */
6582 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
6584 switch (EF_ARM_EABI_VERSION (flags
))
6586 case EF_ARM_EABI_UNKNOWN
:
6587 /* The following flag bits are GNU extensions and not part of the
6588 official ARM ELF extended ABI. Hence they are only decoded if
6589 the EABI version is not set. */
6590 if (flags
& EF_ARM_INTERWORK
)
6591 fprintf (file
, _(" [interworking enabled]"));
6593 if (flags
& EF_ARM_APCS_26
)
6594 fprintf (file
, " [APCS-26]");
6596 fprintf (file
, " [APCS-32]");
6598 if (flags
& EF_ARM_VFP_FLOAT
)
6599 fprintf (file
, _(" [VFP float format]"));
6600 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
6601 fprintf (file
, _(" [Maverick float format]"));
6603 fprintf (file
, _(" [FPA float format]"));
6605 if (flags
& EF_ARM_APCS_FLOAT
)
6606 fprintf (file
, _(" [floats passed in float registers]"));
6608 if (flags
& EF_ARM_PIC
)
6609 fprintf (file
, _(" [position independent]"));
6611 if (flags
& EF_ARM_NEW_ABI
)
6612 fprintf (file
, _(" [new ABI]"));
6614 if (flags
& EF_ARM_OLD_ABI
)
6615 fprintf (file
, _(" [old ABI]"));
6617 if (flags
& EF_ARM_SOFT_FLOAT
)
6618 fprintf (file
, _(" [software FP]"));
6620 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
6621 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
6622 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
6623 | EF_ARM_MAVERICK_FLOAT
);
6626 case EF_ARM_EABI_VER1
:
6627 fprintf (file
, _(" [Version1 EABI]"));
6629 if (flags
& EF_ARM_SYMSARESORTED
)
6630 fprintf (file
, _(" [sorted symbol table]"));
6632 fprintf (file
, _(" [unsorted symbol table]"));
6634 flags
&= ~ EF_ARM_SYMSARESORTED
;
6637 case EF_ARM_EABI_VER2
:
6638 fprintf (file
, _(" [Version2 EABI]"));
6640 if (flags
& EF_ARM_SYMSARESORTED
)
6641 fprintf (file
, _(" [sorted symbol table]"));
6643 fprintf (file
, _(" [unsorted symbol table]"));
6645 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
6646 fprintf (file
, _(" [dynamic symbols use segment index]"));
6648 if (flags
& EF_ARM_MAPSYMSFIRST
)
6649 fprintf (file
, _(" [mapping symbols precede others]"));
6651 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
6652 | EF_ARM_MAPSYMSFIRST
);
6655 case EF_ARM_EABI_VER3
:
6656 fprintf (file
, _(" [Version3 EABI]"));
6659 case EF_ARM_EABI_VER4
:
6660 fprintf (file
, _(" [Version4 EABI]"));
6663 case EF_ARM_EABI_VER5
:
6664 fprintf (file
, _(" [Version5 EABI]"));
6666 if (flags
& EF_ARM_BE8
)
6667 fprintf (file
, _(" [BE8]"));
6669 if (flags
& EF_ARM_LE8
)
6670 fprintf (file
, _(" [LE8]"));
6672 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
6676 fprintf (file
, _(" <EABI version unrecognised>"));
6680 flags
&= ~ EF_ARM_EABIMASK
;
6682 if (flags
& EF_ARM_RELEXEC
)
6683 fprintf (file
, _(" [relocatable executable]"));
6685 if (flags
& EF_ARM_HASENTRY
)
6686 fprintf (file
, _(" [has entry point]"));
6688 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
6691 fprintf (file
, _("<Unrecognised flag bits set>"));
6699 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
6701 switch (ELF_ST_TYPE (elf_sym
->st_info
))
6704 return ELF_ST_TYPE (elf_sym
->st_info
);
6707 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
6708 This allows us to distinguish between data used by Thumb instructions
6709 and non-data (which is probably code) inside Thumb regions of an
6711 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
6712 return ELF_ST_TYPE (elf_sym
->st_info
);
6723 elf32_arm_gc_mark_hook (asection
*sec
,
6724 struct bfd_link_info
*info
,
6725 Elf_Internal_Rela
*rel
,
6726 struct elf_link_hash_entry
*h
,
6727 Elf_Internal_Sym
*sym
)
6730 switch (ELF32_R_TYPE (rel
->r_info
))
6732 case R_ARM_GNU_VTINHERIT
:
6733 case R_ARM_GNU_VTENTRY
:
6737 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6740 /* Update the got entry reference counts for the section being removed. */
6743 elf32_arm_gc_sweep_hook (bfd
* abfd
,
6744 struct bfd_link_info
* info
,
6746 const Elf_Internal_Rela
* relocs
)
6748 Elf_Internal_Shdr
*symtab_hdr
;
6749 struct elf_link_hash_entry
**sym_hashes
;
6750 bfd_signed_vma
*local_got_refcounts
;
6751 const Elf_Internal_Rela
*rel
, *relend
;
6752 struct elf32_arm_link_hash_table
* globals
;
6754 globals
= elf32_arm_hash_table (info
);
6756 elf_section_data (sec
)->local_dynrel
= NULL
;
6758 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
6759 sym_hashes
= elf_sym_hashes (abfd
);
6760 local_got_refcounts
= elf_local_got_refcounts (abfd
);
6762 relend
= relocs
+ sec
->reloc_count
;
6763 for (rel
= relocs
; rel
< relend
; rel
++)
6765 unsigned long r_symndx
;
6766 struct elf_link_hash_entry
*h
= NULL
;
6769 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6770 if (r_symndx
>= symtab_hdr
->sh_info
)
6772 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6773 while (h
->root
.type
== bfd_link_hash_indirect
6774 || h
->root
.type
== bfd_link_hash_warning
)
6775 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6778 r_type
= ELF32_R_TYPE (rel
->r_info
);
6779 r_type
= arm_real_reloc_type (globals
, r_type
);
6783 case R_ARM_GOT_PREL
:
6784 case R_ARM_TLS_GD32
:
6785 case R_ARM_TLS_IE32
:
6788 if (h
->got
.refcount
> 0)
6789 h
->got
.refcount
-= 1;
6791 else if (local_got_refcounts
!= NULL
)
6793 if (local_got_refcounts
[r_symndx
] > 0)
6794 local_got_refcounts
[r_symndx
] -= 1;
6798 case R_ARM_TLS_LDM32
:
6799 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
6803 case R_ARM_ABS32_NOI
:
6805 case R_ARM_REL32_NOI
:
6811 case R_ARM_THM_CALL
:
6812 case R_ARM_MOVW_ABS_NC
:
6813 case R_ARM_MOVT_ABS
:
6814 case R_ARM_MOVW_PREL_NC
:
6815 case R_ARM_MOVT_PREL
:
6816 case R_ARM_THM_MOVW_ABS_NC
:
6817 case R_ARM_THM_MOVT_ABS
:
6818 case R_ARM_THM_MOVW_PREL_NC
:
6819 case R_ARM_THM_MOVT_PREL
:
6820 /* Should the interworking branches be here also? */
6824 struct elf32_arm_link_hash_entry
*eh
;
6825 struct elf32_arm_relocs_copied
**pp
;
6826 struct elf32_arm_relocs_copied
*p
;
6828 eh
= (struct elf32_arm_link_hash_entry
*) h
;
6830 if (h
->plt
.refcount
> 0)
6832 h
->plt
.refcount
-= 1;
6833 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_THM_CALL
)
6834 eh
->plt_thumb_refcount
--;
6837 if (r_type
== R_ARM_ABS32
6838 || r_type
== R_ARM_REL32
6839 || r_type
== R_ARM_ABS32_NOI
6840 || r_type
== R_ARM_REL32_NOI
)
6842 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
6844 if (p
->section
== sec
)
6847 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
6848 || ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32_NOI
)
6866 /* Look through the relocs for a section during the first phase. */
6869 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
6870 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6872 Elf_Internal_Shdr
*symtab_hdr
;
6873 struct elf_link_hash_entry
**sym_hashes
;
6874 struct elf_link_hash_entry
**sym_hashes_end
;
6875 const Elf_Internal_Rela
*rel
;
6876 const Elf_Internal_Rela
*rel_end
;
6879 bfd_vma
*local_got_offsets
;
6880 struct elf32_arm_link_hash_table
*htab
;
6882 if (info
->relocatable
)
6885 htab
= elf32_arm_hash_table (info
);
6888 /* Create dynamic sections for relocatable executables so that we can
6889 copy relocations. */
6890 if (htab
->root
.is_relocatable_executable
6891 && ! htab
->root
.dynamic_sections_created
)
6893 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
6897 dynobj
= elf_hash_table (info
)->dynobj
;
6898 local_got_offsets
= elf_local_got_offsets (abfd
);
6900 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
6901 sym_hashes
= elf_sym_hashes (abfd
);
6902 sym_hashes_end
= sym_hashes
6903 + symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
);
6905 if (!elf_bad_symtab (abfd
))
6906 sym_hashes_end
-= symtab_hdr
->sh_info
;
6908 rel_end
= relocs
+ sec
->reloc_count
;
6909 for (rel
= relocs
; rel
< rel_end
; rel
++)
6911 struct elf_link_hash_entry
*h
;
6912 struct elf32_arm_link_hash_entry
*eh
;
6913 unsigned long r_symndx
;
6916 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6917 r_type
= ELF32_R_TYPE (rel
->r_info
);
6918 r_type
= arm_real_reloc_type (htab
, r_type
);
6920 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
6922 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
6927 if (r_symndx
< symtab_hdr
->sh_info
)
6931 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6932 while (h
->root
.type
== bfd_link_hash_indirect
6933 || h
->root
.type
== bfd_link_hash_warning
)
6934 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6937 eh
= (struct elf32_arm_link_hash_entry
*) h
;
6942 case R_ARM_GOT_PREL
:
6943 case R_ARM_TLS_GD32
:
6944 case R_ARM_TLS_IE32
:
6945 /* This symbol requires a global offset table entry. */
6947 int tls_type
, old_tls_type
;
6951 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
6952 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
6953 default: tls_type
= GOT_NORMAL
; break;
6959 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
6963 bfd_signed_vma
*local_got_refcounts
;
6965 /* This is a global offset table entry for a local symbol. */
6966 local_got_refcounts
= elf_local_got_refcounts (abfd
);
6967 if (local_got_refcounts
== NULL
)
6971 size
= symtab_hdr
->sh_info
;
6972 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
6973 local_got_refcounts
= bfd_zalloc (abfd
, size
);
6974 if (local_got_refcounts
== NULL
)
6976 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
6977 elf32_arm_local_got_tls_type (abfd
)
6978 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
6980 local_got_refcounts
[r_symndx
] += 1;
6981 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
6984 /* We will already have issued an error message if there is a
6985 TLS / non-TLS mismatch, based on the symbol type. We don't
6986 support any linker relaxations. So just combine any TLS
6988 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
6989 && tls_type
!= GOT_NORMAL
)
6990 tls_type
|= old_tls_type
;
6992 if (old_tls_type
!= tls_type
)
6995 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
6997 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
7002 case R_ARM_TLS_LDM32
:
7003 if (r_type
== R_ARM_TLS_LDM32
)
7004 htab
->tls_ldm_got
.refcount
++;
7007 case R_ARM_GOTOFF32
:
7009 if (htab
->sgot
== NULL
)
7011 if (htab
->root
.dynobj
== NULL
)
7012 htab
->root
.dynobj
= abfd
;
7013 if (!create_got_section (htab
->root
.dynobj
, info
))
7019 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
7020 ldr __GOTT_INDEX__ offsets. */
7021 if (!htab
->vxworks_p
)
7026 case R_ARM_ABS32_NOI
:
7028 case R_ARM_REL32_NOI
:
7034 case R_ARM_THM_CALL
:
7035 case R_ARM_MOVW_ABS_NC
:
7036 case R_ARM_MOVT_ABS
:
7037 case R_ARM_MOVW_PREL_NC
:
7038 case R_ARM_MOVT_PREL
:
7039 case R_ARM_THM_MOVW_ABS_NC
:
7040 case R_ARM_THM_MOVT_ABS
:
7041 case R_ARM_THM_MOVW_PREL_NC
:
7042 case R_ARM_THM_MOVT_PREL
:
7043 /* Should the interworking branches be listed here? */
7046 /* If this reloc is in a read-only section, we might
7047 need a copy reloc. We can't check reliably at this
7048 stage whether the section is read-only, as input
7049 sections have not yet been mapped to output sections.
7050 Tentatively set the flag for now, and correct in
7051 adjust_dynamic_symbol. */
7055 /* We may need a .plt entry if the function this reloc
7056 refers to is in a different object. We can't tell for
7057 sure yet, because something later might force the
7059 if (r_type
!= R_ARM_ABS32
7060 && r_type
!= R_ARM_REL32
7061 && r_type
!= R_ARM_ABS32_NOI
7062 && r_type
!= R_ARM_REL32_NOI
)
7065 /* If we create a PLT entry, this relocation will reference
7066 it, even if it's an ABS32 relocation. */
7067 h
->plt
.refcount
+= 1;
7069 if (r_type
== R_ARM_THM_CALL
)
7070 eh
->plt_thumb_refcount
+= 1;
7073 /* If we are creating a shared library or relocatable executable,
7074 and this is a reloc against a global symbol, or a non PC
7075 relative reloc against a local symbol, then we need to copy
7076 the reloc into the shared library. However, if we are linking
7077 with -Bsymbolic, we do not need to copy a reloc against a
7078 global symbol which is defined in an object we are
7079 including in the link (i.e., DEF_REGULAR is set). At
7080 this point we have not seen all the input files, so it is
7081 possible that DEF_REGULAR is not set now but will be set
7082 later (it is never cleared). We account for that
7083 possibility below by storing information in the
7084 relocs_copied field of the hash table entry. */
7085 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
7086 && (sec
->flags
& SEC_ALLOC
) != 0
7087 && ((r_type
== R_ARM_ABS32
|| r_type
== R_ARM_ABS32_NOI
)
7088 || (h
!= NULL
&& ! h
->needs_plt
7089 && (! info
->symbolic
|| ! h
->def_regular
))))
7091 struct elf32_arm_relocs_copied
*p
, **head
;
7093 /* When creating a shared object, we must copy these
7094 reloc types into the output file. We create a reloc
7095 section in dynobj and make room for this reloc. */
7100 name
= (bfd_elf_string_from_elf_section
7102 elf_elfheader (abfd
)->e_shstrndx
,
7103 elf_section_data (sec
)->rel_hdr
.sh_name
));
7107 BFD_ASSERT (reloc_section_p (htab
, name
, sec
));
7109 sreloc
= bfd_get_section_by_name (dynobj
, name
);
7114 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
7115 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
7116 if ((sec
->flags
& SEC_ALLOC
) != 0
7117 /* BPABI objects never have dynamic
7118 relocations mapped. */
7119 && !htab
->symbian_p
)
7120 flags
|= SEC_ALLOC
| SEC_LOAD
;
7121 sreloc
= bfd_make_section_with_flags (dynobj
,
7125 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
7129 elf_section_data (sec
)->sreloc
= sreloc
;
7132 /* If this is a global symbol, we count the number of
7133 relocations we need for this symbol. */
7136 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
7140 /* Track dynamic relocs needed for local syms too.
7141 We really need local syms available to do this
7147 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
7152 vpp
= &elf_section_data (s
)->local_dynrel
;
7153 head
= (struct elf32_arm_relocs_copied
**) vpp
;
7157 if (p
== NULL
|| p
->section
!= sec
)
7159 bfd_size_type amt
= sizeof *p
;
7161 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
7171 if (r_type
== R_ARM_REL32
|| r_type
== R_ARM_REL32_NOI
)
7177 /* This relocation describes the C++ object vtable hierarchy.
7178 Reconstruct it for later use during GC. */
7179 case R_ARM_GNU_VTINHERIT
:
7180 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
7184 /* This relocation describes which C++ vtable entries are actually
7185 used. Record for later use during GC. */
7186 case R_ARM_GNU_VTENTRY
:
7187 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
7196 /* Treat mapping symbols as special target symbols. */
7199 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
7201 return bfd_is_arm_special_symbol_name (sym
->name
,
7202 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
7205 /* This is a copy of elf_find_function() from elf.c except that
7206 ARM mapping symbols are ignored when looking for function names
7207 and STT_ARM_TFUNC is considered to a function type. */
7210 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
7214 const char ** filename_ptr
,
7215 const char ** functionname_ptr
)
7217 const char * filename
= NULL
;
7218 asymbol
* func
= NULL
;
7219 bfd_vma low_func
= 0;
7222 for (p
= symbols
; *p
!= NULL
; p
++)
7226 q
= (elf_symbol_type
*) *p
;
7228 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
7233 filename
= bfd_asymbol_name (&q
->symbol
);
7238 /* Skip mapping symbols. */
7239 if ((q
->symbol
.flags
& BSF_LOCAL
)
7240 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
7241 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
7244 if (bfd_get_section (&q
->symbol
) == section
7245 && q
->symbol
.value
>= low_func
7246 && q
->symbol
.value
<= offset
)
7248 func
= (asymbol
*) q
;
7249 low_func
= q
->symbol
.value
;
7259 *filename_ptr
= filename
;
7260 if (functionname_ptr
)
7261 *functionname_ptr
= bfd_asymbol_name (func
);
7267 /* Find the nearest line to a particular section and offset, for error
7268 reporting. This code is a duplicate of the code in elf.c, except
7269 that it uses arm_elf_find_function. */
7272 elf32_arm_find_nearest_line (bfd
* abfd
,
7276 const char ** filename_ptr
,
7277 const char ** functionname_ptr
,
7278 unsigned int * line_ptr
)
7280 bfd_boolean found
= FALSE
;
7282 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
7284 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
7285 filename_ptr
, functionname_ptr
,
7287 & elf_tdata (abfd
)->dwarf2_find_line_info
))
7289 if (!*functionname_ptr
)
7290 arm_elf_find_function (abfd
, section
, symbols
, offset
,
7291 *filename_ptr
? NULL
: filename_ptr
,
7297 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
7298 & found
, filename_ptr
,
7299 functionname_ptr
, line_ptr
,
7300 & elf_tdata (abfd
)->line_info
))
7303 if (found
&& (*functionname_ptr
|| *line_ptr
))
7306 if (symbols
== NULL
)
7309 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
7310 filename_ptr
, functionname_ptr
))
7318 elf32_arm_find_inliner_info (bfd
* abfd
,
7319 const char ** filename_ptr
,
7320 const char ** functionname_ptr
,
7321 unsigned int * line_ptr
)
7324 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
7325 functionname_ptr
, line_ptr
,
7326 & elf_tdata (abfd
)->dwarf2_find_line_info
);
7330 /* Adjust a symbol defined by a dynamic object and referenced by a
7331 regular object. The current definition is in some section of the
7332 dynamic object, but we're not including those sections. We have to
7333 change the definition to something the rest of the link can
7337 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
7338 struct elf_link_hash_entry
* h
)
7342 unsigned int power_of_two
;
7343 struct elf32_arm_link_hash_entry
* eh
;
7344 struct elf32_arm_link_hash_table
*globals
;
7346 globals
= elf32_arm_hash_table (info
);
7347 dynobj
= elf_hash_table (info
)->dynobj
;
7349 /* Make sure we know what is going on here. */
7350 BFD_ASSERT (dynobj
!= NULL
7352 || h
->u
.weakdef
!= NULL
7355 && !h
->def_regular
)));
7357 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7359 /* If this is a function, put it in the procedure linkage table. We
7360 will fill in the contents of the procedure linkage table later,
7361 when we know the address of the .got section. */
7362 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
7365 if (h
->plt
.refcount
<= 0
7366 || SYMBOL_CALLS_LOCAL (info
, h
)
7367 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7368 && h
->root
.type
== bfd_link_hash_undefweak
))
7370 /* This case can occur if we saw a PLT32 reloc in an input
7371 file, but the symbol was never referred to by a dynamic
7372 object, or if all references were garbage collected. In
7373 such a case, we don't actually need to build a procedure
7374 linkage table, and we can just do a PC24 reloc instead. */
7375 h
->plt
.offset
= (bfd_vma
) -1;
7376 eh
->plt_thumb_refcount
= 0;
7384 /* It's possible that we incorrectly decided a .plt reloc was
7385 needed for an R_ARM_PC24 or similar reloc to a non-function sym
7386 in check_relocs. We can't decide accurately between function
7387 and non-function syms in check-relocs; Objects loaded later in
7388 the link may change h->type. So fix it now. */
7389 h
->plt
.offset
= (bfd_vma
) -1;
7390 eh
->plt_thumb_refcount
= 0;
7393 /* If this is a weak symbol, and there is a real definition, the
7394 processor independent code will have arranged for us to see the
7395 real definition first, and we can just use the same value. */
7396 if (h
->u
.weakdef
!= NULL
)
7398 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7399 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7400 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7401 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7405 /* If there are no non-GOT references, we do not need a copy
7407 if (!h
->non_got_ref
)
7410 /* This is a reference to a symbol defined by a dynamic object which
7411 is not a function. */
7413 /* If we are creating a shared library, we must presume that the
7414 only references to the symbol are via the global offset table.
7415 For such cases we need not do anything here; the relocations will
7416 be handled correctly by relocate_section. Relocatable executables
7417 can reference data in shared objects directly, so we don't need to
7418 do anything here. */
7419 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
7424 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
7425 h
->root
.root
.string
);
7429 /* We must allocate the symbol in our .dynbss section, which will
7430 become part of the .bss section of the executable. There will be
7431 an entry for this symbol in the .dynsym section. The dynamic
7432 object will contain position independent code, so all references
7433 from the dynamic object to this symbol will go through the global
7434 offset table. The dynamic linker will use the .dynsym entry to
7435 determine the address it must put in the global offset table, so
7436 both the dynamic object and the regular object will refer to the
7437 same memory location for the variable. */
7438 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
7439 BFD_ASSERT (s
!= NULL
);
7441 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
7442 copy the initial value out of the dynamic object and into the
7443 runtime process image. We need to remember the offset into the
7444 .rel(a).bss section we are going to use. */
7445 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
7449 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
7450 BFD_ASSERT (srel
!= NULL
);
7451 srel
->size
+= RELOC_SIZE (globals
);
7455 /* We need to figure out the alignment required for this symbol. I
7456 have no idea how ELF linkers handle this. */
7457 power_of_two
= bfd_log2 (h
->size
);
7458 if (power_of_two
> 3)
7461 /* Apply the required alignment. */
7462 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
7463 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
7465 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
7469 /* Define the symbol as being at this point in the section. */
7470 h
->root
.u
.def
.section
= s
;
7471 h
->root
.u
.def
.value
= s
->size
;
7473 /* Increment the section size to make room for the symbol. */
7479 /* Allocate space in .plt, .got and associated reloc sections for
7483 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
7485 struct bfd_link_info
*info
;
7486 struct elf32_arm_link_hash_table
*htab
;
7487 struct elf32_arm_link_hash_entry
*eh
;
7488 struct elf32_arm_relocs_copied
*p
;
7490 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7492 if (h
->root
.type
== bfd_link_hash_indirect
)
7495 if (h
->root
.type
== bfd_link_hash_warning
)
7496 /* When warning symbols are created, they **replace** the "real"
7497 entry in the hash table, thus we never get to see the real
7498 symbol in a hash traversal. So look at it now. */
7499 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7501 info
= (struct bfd_link_info
*) inf
;
7502 htab
= elf32_arm_hash_table (info
);
7504 if (htab
->root
.dynamic_sections_created
7505 && h
->plt
.refcount
> 0)
7507 /* Make sure this symbol is output as a dynamic symbol.
7508 Undefined weak syms won't yet be marked as dynamic. */
7509 if (h
->dynindx
== -1
7510 && !h
->forced_local
)
7512 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7517 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
7519 asection
*s
= htab
->splt
;
7521 /* If this is the first .plt entry, make room for the special
7524 s
->size
+= htab
->plt_header_size
;
7526 h
->plt
.offset
= s
->size
;
7528 /* If we will insert a Thumb trampoline before this PLT, leave room
7530 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
7532 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
7533 s
->size
+= PLT_THUMB_STUB_SIZE
;
7536 /* If this symbol is not defined in a regular file, and we are
7537 not generating a shared library, then set the symbol to this
7538 location in the .plt. This is required to make function
7539 pointers compare as equal between the normal executable and
7540 the shared library. */
7544 h
->root
.u
.def
.section
= s
;
7545 h
->root
.u
.def
.value
= h
->plt
.offset
;
7547 /* Make sure the function is not marked as Thumb, in case
7548 it is the target of an ABS32 relocation, which will
7549 point to the PLT entry. */
7550 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
7551 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
7554 /* Make room for this entry. */
7555 s
->size
+= htab
->plt_entry_size
;
7557 if (!htab
->symbian_p
)
7559 /* We also need to make an entry in the .got.plt section, which
7560 will be placed in the .got section by the linker script. */
7561 eh
->plt_got_offset
= htab
->sgotplt
->size
;
7562 htab
->sgotplt
->size
+= 4;
7565 /* We also need to make an entry in the .rel(a).plt section. */
7566 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
7568 /* VxWorks executables have a second set of relocations for
7569 each PLT entry. They go in a separate relocation section,
7570 which is processed by the kernel loader. */
7571 if (htab
->vxworks_p
&& !info
->shared
)
7573 /* There is a relocation for the initial PLT entry:
7574 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
7575 if (h
->plt
.offset
== htab
->plt_header_size
)
7576 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
7578 /* There are two extra relocations for each subsequent
7579 PLT entry: an R_ARM_32 relocation for the GOT entry,
7580 and an R_ARM_32 relocation for the PLT entry. */
7581 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
7586 h
->plt
.offset
= (bfd_vma
) -1;
7592 h
->plt
.offset
= (bfd_vma
) -1;
7596 if (h
->got
.refcount
> 0)
7600 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
7603 /* Make sure this symbol is output as a dynamic symbol.
7604 Undefined weak syms won't yet be marked as dynamic. */
7605 if (h
->dynindx
== -1
7606 && !h
->forced_local
)
7608 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7612 if (!htab
->symbian_p
)
7615 h
->got
.offset
= s
->size
;
7617 if (tls_type
== GOT_UNKNOWN
)
7620 if (tls_type
== GOT_NORMAL
)
7621 /* Non-TLS symbols need one GOT slot. */
7625 if (tls_type
& GOT_TLS_GD
)
7626 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
7628 if (tls_type
& GOT_TLS_IE
)
7629 /* R_ARM_TLS_IE32 needs one GOT slot. */
7633 dyn
= htab
->root
.dynamic_sections_created
;
7636 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
7638 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
7641 if (tls_type
!= GOT_NORMAL
7642 && (info
->shared
|| indx
!= 0)
7643 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7644 || h
->root
.type
!= bfd_link_hash_undefweak
))
7646 if (tls_type
& GOT_TLS_IE
)
7647 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7649 if (tls_type
& GOT_TLS_GD
)
7650 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7652 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
7653 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7655 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7656 || h
->root
.type
!= bfd_link_hash_undefweak
)
7658 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
7659 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7663 h
->got
.offset
= (bfd_vma
) -1;
7665 /* Allocate stubs for exported Thumb functions on v4t. */
7666 if (!htab
->use_blx
&& h
->dynindx
!= -1
7667 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
7668 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
7670 struct elf_link_hash_entry
* th
;
7671 struct bfd_link_hash_entry
* bh
;
7672 struct elf_link_hash_entry
* myh
;
7676 /* Create a new symbol to regist the real location of the function. */
7677 s
= h
->root
.u
.def
.section
;
7678 sprintf(name
, "__real_%s", h
->root
.root
.string
);
7679 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
7680 name
, BSF_GLOBAL
, s
,
7681 h
->root
.u
.def
.value
,
7682 NULL
, TRUE
, FALSE
, &bh
);
7684 myh
= (struct elf_link_hash_entry
*) bh
;
7685 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
7686 myh
->forced_local
= 1;
7687 eh
->export_glue
= myh
;
7688 th
= record_arm_to_thumb_glue (info
, h
);
7689 /* Point the symbol at the stub. */
7690 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
7691 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
7692 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
7695 if (eh
->relocs_copied
== NULL
)
7698 /* In the shared -Bsymbolic case, discard space allocated for
7699 dynamic pc-relative relocs against symbols which turn out to be
7700 defined in regular objects. For the normal shared case, discard
7701 space for pc-relative relocs that have become local due to symbol
7702 visibility changes. */
7704 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
7706 /* The only reloc thats uses pc_count are R_ARM_REL32 and
7707 R_ARM_REL32_NOI, which will appear on something like
7708 ".long foo - .". We want calls to protected symbols to resolve
7709 directly to the function rather than going via the plt. If people
7710 want function pointer comparisons to work as expected then they
7711 should avoid writing assembly like ".long foo - .". */
7712 if (SYMBOL_CALLS_LOCAL (info
, h
))
7714 struct elf32_arm_relocs_copied
**pp
;
7716 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
7718 p
->count
-= p
->pc_count
;
7727 /* Also discard relocs on undefined weak syms with non-default
7729 if (eh
->relocs_copied
!= NULL
7730 && h
->root
.type
== bfd_link_hash_undefweak
)
7732 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
7733 eh
->relocs_copied
= NULL
;
7735 /* Make sure undefined weak symbols are output as a dynamic
7737 else if (h
->dynindx
== -1
7738 && !h
->forced_local
)
7740 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7745 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
7746 && h
->root
.type
== bfd_link_hash_new
)
7748 /* Output absolute symbols so that we can create relocations
7749 against them. For normal symbols we output a relocation
7750 against the section that contains them. */
7751 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7758 /* For the non-shared case, discard space for relocs against
7759 symbols which turn out to need copy relocs or are not
7765 || (htab
->root
.dynamic_sections_created
7766 && (h
->root
.type
== bfd_link_hash_undefweak
7767 || h
->root
.type
== bfd_link_hash_undefined
))))
7769 /* Make sure this symbol is output as a dynamic symbol.
7770 Undefined weak syms won't yet be marked as dynamic. */
7771 if (h
->dynindx
== -1
7772 && !h
->forced_local
)
7774 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7778 /* If that succeeded, we know we'll be keeping all the
7780 if (h
->dynindx
!= -1)
7784 eh
->relocs_copied
= NULL
;
7789 /* Finally, allocate space. */
7790 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
7792 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
7793 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
7799 /* Find any dynamic relocs that apply to read-only sections. */
7802 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
*h
, PTR inf
)
7804 struct elf32_arm_link_hash_entry
*eh
;
7805 struct elf32_arm_relocs_copied
*p
;
7807 if (h
->root
.type
== bfd_link_hash_warning
)
7808 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7810 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7811 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
7813 asection
*s
= p
->section
;
7815 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7817 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
7819 info
->flags
|= DF_TEXTREL
;
7821 /* Not an error, just cut short the traversal. */
7828 /* Set the sizes of the dynamic sections. */
7831 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
7832 struct bfd_link_info
* info
)
7839 struct elf32_arm_link_hash_table
*htab
;
7841 htab
= elf32_arm_hash_table (info
);
7842 dynobj
= elf_hash_table (info
)->dynobj
;
7843 BFD_ASSERT (dynobj
!= NULL
);
7844 check_use_blx (htab
);
7846 if (elf_hash_table (info
)->dynamic_sections_created
)
7848 /* Set the contents of the .interp section to the interpreter. */
7849 if (info
->executable
)
7851 s
= bfd_get_section_by_name (dynobj
, ".interp");
7852 BFD_ASSERT (s
!= NULL
);
7853 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
7854 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
7858 /* Set up .got offsets for local syms, and space for local dynamic
7860 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7862 bfd_signed_vma
*local_got
;
7863 bfd_signed_vma
*end_local_got
;
7864 char *local_tls_type
;
7865 bfd_size_type locsymcount
;
7866 Elf_Internal_Shdr
*symtab_hdr
;
7869 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
7872 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
7874 struct elf32_arm_relocs_copied
*p
;
7876 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
7878 if (!bfd_is_abs_section (p
->section
)
7879 && bfd_is_abs_section (p
->section
->output_section
))
7881 /* Input section has been discarded, either because
7882 it is a copy of a linkonce section or due to
7883 linker script /DISCARD/, so we'll be discarding
7886 else if (p
->count
!= 0)
7888 srel
= elf_section_data (p
->section
)->sreloc
;
7889 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
7890 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
7891 info
->flags
|= DF_TEXTREL
;
7896 local_got
= elf_local_got_refcounts (ibfd
);
7900 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7901 locsymcount
= symtab_hdr
->sh_info
;
7902 end_local_got
= local_got
+ locsymcount
;
7903 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
7905 srel
= htab
->srelgot
;
7906 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
7910 *local_got
= s
->size
;
7911 if (*local_tls_type
& GOT_TLS_GD
)
7912 /* TLS_GD relocs need an 8-byte structure in the GOT. */
7914 if (*local_tls_type
& GOT_TLS_IE
)
7916 if (*local_tls_type
== GOT_NORMAL
)
7919 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
7920 srel
->size
+= RELOC_SIZE (htab
);
7923 *local_got
= (bfd_vma
) -1;
7927 if (htab
->tls_ldm_got
.refcount
> 0)
7929 /* Allocate two GOT entries and one dynamic relocation (if necessary)
7930 for R_ARM_TLS_LDM32 relocations. */
7931 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
7932 htab
->sgot
->size
+= 8;
7934 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7937 htab
->tls_ldm_got
.offset
= -1;
7939 /* Allocate global sym .plt and .got entries, and space for global
7940 sym dynamic relocs. */
7941 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
7943 /* The check_relocs and adjust_dynamic_symbol entry points have
7944 determined the sizes of the various dynamic sections. Allocate
7948 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
7952 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
7955 /* It's OK to base decisions on the section name, because none
7956 of the dynobj section names depend upon the input files. */
7957 name
= bfd_get_section_name (dynobj
, s
);
7959 if (strcmp (name
, ".plt") == 0)
7961 /* Remember whether there is a PLT. */
7964 else if (CONST_STRNEQ (name
, ".rel"))
7968 /* Remember whether there are any reloc sections other
7969 than .rel(a).plt and .rela.plt.unloaded. */
7970 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
7973 /* We use the reloc_count field as a counter if we need
7974 to copy relocs into the output file. */
7978 else if (! CONST_STRNEQ (name
, ".got")
7979 && strcmp (name
, ".dynbss") != 0)
7981 /* It's not one of our sections, so don't allocate space. */
7987 /* If we don't need this section, strip it from the
7988 output file. This is mostly to handle .rel(a).bss and
7989 .rel(a).plt. We must create both sections in
7990 create_dynamic_sections, because they must be created
7991 before the linker maps input sections to output
7992 sections. The linker does that before
7993 adjust_dynamic_symbol is called, and it is that
7994 function which decides whether anything needs to go
7995 into these sections. */
7996 s
->flags
|= SEC_EXCLUDE
;
8000 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8003 /* Allocate memory for the section contents. */
8004 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
8005 if (s
->contents
== NULL
)
8009 if (elf_hash_table (info
)->dynamic_sections_created
)
8011 /* Add some entries to the .dynamic section. We fill in the
8012 values later, in elf32_arm_finish_dynamic_sections, but we
8013 must add the entries now so that we get the correct size for
8014 the .dynamic section. The DT_DEBUG entry is filled in by the
8015 dynamic linker and used by the debugger. */
8016 #define add_dynamic_entry(TAG, VAL) \
8017 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8019 if (info
->executable
)
8021 if (!add_dynamic_entry (DT_DEBUG
, 0))
8027 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
8028 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8029 || !add_dynamic_entry (DT_PLTREL
,
8030 htab
->use_rel
? DT_REL
: DT_RELA
)
8031 || !add_dynamic_entry (DT_JMPREL
, 0))
8039 if (!add_dynamic_entry (DT_REL
, 0)
8040 || !add_dynamic_entry (DT_RELSZ
, 0)
8041 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
8046 if (!add_dynamic_entry (DT_RELA
, 0)
8047 || !add_dynamic_entry (DT_RELASZ
, 0)
8048 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
8053 /* If any dynamic relocs apply to a read-only section,
8054 then we need a DT_TEXTREL entry. */
8055 if ((info
->flags
& DF_TEXTREL
) == 0)
8056 elf_link_hash_traverse (&htab
->root
, elf32_arm_readonly_dynrelocs
,
8059 if ((info
->flags
& DF_TEXTREL
) != 0)
8061 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8065 #undef add_dynamic_entry
8070 /* Finish up dynamic symbol handling. We set the contents of various
8071 dynamic sections here. */
8074 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
, struct bfd_link_info
* info
,
8075 struct elf_link_hash_entry
* h
, Elf_Internal_Sym
* sym
)
8078 struct elf32_arm_link_hash_table
*htab
;
8079 struct elf32_arm_link_hash_entry
*eh
;
8081 dynobj
= elf_hash_table (info
)->dynobj
;
8082 htab
= elf32_arm_hash_table (info
);
8083 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8085 if (h
->plt
.offset
!= (bfd_vma
) -1)
8091 Elf_Internal_Rela rel
;
8093 /* This symbol has an entry in the procedure linkage table. Set
8096 BFD_ASSERT (h
->dynindx
!= -1);
8098 splt
= bfd_get_section_by_name (dynobj
, ".plt");
8099 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
8100 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
8102 /* Fill in the entry in the procedure linkage table. */
8103 if (htab
->symbian_p
)
8105 put_arm_insn (htab
, output_bfd
,
8106 elf32_arm_symbian_plt_entry
[0],
8107 splt
->contents
+ h
->plt
.offset
);
8108 bfd_put_32 (output_bfd
,
8109 elf32_arm_symbian_plt_entry
[1],
8110 splt
->contents
+ h
->plt
.offset
+ 4);
8112 /* Fill in the entry in the .rel.plt section. */
8113 rel
.r_offset
= (splt
->output_section
->vma
8114 + splt
->output_offset
8115 + h
->plt
.offset
+ 4);
8116 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
8118 /* Get the index in the procedure linkage table which
8119 corresponds to this symbol. This is the index of this symbol
8120 in all the symbols for which we are making plt entries. The
8121 first entry in the procedure linkage table is reserved. */
8122 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
8123 / htab
->plt_entry_size
);
8127 bfd_vma got_offset
, got_address
, plt_address
;
8128 bfd_vma got_displacement
;
8132 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
8133 BFD_ASSERT (sgot
!= NULL
);
8135 /* Get the offset into the .got.plt table of the entry that
8136 corresponds to this function. */
8137 got_offset
= eh
->plt_got_offset
;
8139 /* Get the index in the procedure linkage table which
8140 corresponds to this symbol. This is the index of this symbol
8141 in all the symbols for which we are making plt entries. The
8142 first three entries in .got.plt are reserved; after that
8143 symbols appear in the same order as in .plt. */
8144 plt_index
= (got_offset
- 12) / 4;
8146 /* Calculate the address of the GOT entry. */
8147 got_address
= (sgot
->output_section
->vma
8148 + sgot
->output_offset
8151 /* ...and the address of the PLT entry. */
8152 plt_address
= (splt
->output_section
->vma
8153 + splt
->output_offset
8156 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
8157 if (htab
->vxworks_p
&& info
->shared
)
8162 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
8164 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
8166 val
|= got_address
- sgot
->output_section
->vma
;
8168 val
|= plt_index
* RELOC_SIZE (htab
);
8169 if (i
== 2 || i
== 5)
8170 bfd_put_32 (output_bfd
, val
, ptr
);
8172 put_arm_insn (htab
, output_bfd
, val
, ptr
);
8175 else if (htab
->vxworks_p
)
8180 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++)
8182 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
8186 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
8188 val
|= plt_index
* RELOC_SIZE (htab
);
8189 if (i
== 2 || i
== 5)
8190 bfd_put_32 (output_bfd
, val
, ptr
);
8192 put_arm_insn (htab
, output_bfd
, val
, ptr
);
8195 loc
= (htab
->srelplt2
->contents
8196 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
8198 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
8199 referencing the GOT for this PLT entry. */
8200 rel
.r_offset
= plt_address
+ 8;
8201 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
8202 rel
.r_addend
= got_offset
;
8203 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8204 loc
+= RELOC_SIZE (htab
);
8206 /* Create the R_ARM_ABS32 relocation referencing the
8207 beginning of the PLT for this GOT entry. */
8208 rel
.r_offset
= got_address
;
8209 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
8211 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8215 /* Calculate the displacement between the PLT slot and the
8216 entry in the GOT. The eight-byte offset accounts for the
8217 value produced by adding to pc in the first instruction
8219 got_displacement
= got_address
- (plt_address
+ 8);
8221 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
8223 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
8225 put_thumb_insn (htab
, output_bfd
,
8226 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
8227 put_thumb_insn (htab
, output_bfd
,
8228 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
8231 put_arm_insn (htab
, output_bfd
,
8232 elf32_arm_plt_entry
[0]
8233 | ((got_displacement
& 0x0ff00000) >> 20),
8235 put_arm_insn (htab
, output_bfd
,
8236 elf32_arm_plt_entry
[1]
8237 | ((got_displacement
& 0x000ff000) >> 12),
8239 put_arm_insn (htab
, output_bfd
,
8240 elf32_arm_plt_entry
[2]
8241 | (got_displacement
& 0x00000fff),
8243 #ifdef FOUR_WORD_PLT
8244 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
8248 /* Fill in the entry in the global offset table. */
8249 bfd_put_32 (output_bfd
,
8250 (splt
->output_section
->vma
8251 + splt
->output_offset
),
8252 sgot
->contents
+ got_offset
);
8254 /* Fill in the entry in the .rel(a).plt section. */
8256 rel
.r_offset
= got_address
;
8257 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
8260 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
8261 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8263 if (!h
->def_regular
)
8265 /* Mark the symbol as undefined, rather than as defined in
8266 the .plt section. Leave the value alone. */
8267 sym
->st_shndx
= SHN_UNDEF
;
8268 /* If the symbol is weak, we do need to clear the value.
8269 Otherwise, the PLT entry would provide a definition for
8270 the symbol even if the symbol wasn't defined anywhere,
8271 and so the symbol would never be NULL. */
8272 if (!h
->ref_regular_nonweak
)
8277 if (h
->got
.offset
!= (bfd_vma
) -1
8278 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
8279 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
8283 Elf_Internal_Rela rel
;
8287 /* This symbol has an entry in the global offset table. Set it
8289 sgot
= bfd_get_section_by_name (dynobj
, ".got");
8290 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
8291 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
8293 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
8295 rel
.r_offset
= (sgot
->output_section
->vma
8296 + sgot
->output_offset
8299 /* If this is a static link, or it is a -Bsymbolic link and the
8300 symbol is defined locally or was forced to be local because
8301 of a version file, we just want to emit a RELATIVE reloc.
8302 The entry in the global offset table will already have been
8303 initialized in the relocate_section function. */
8305 && SYMBOL_REFERENCES_LOCAL (info
, h
))
8307 BFD_ASSERT((h
->got
.offset
& 1) != 0);
8308 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
8311 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
8312 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
8317 BFD_ASSERT((h
->got
.offset
& 1) == 0);
8318 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
8319 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
8322 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
8323 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8329 Elf_Internal_Rela rel
;
8332 /* This symbol needs a copy reloc. Set it up. */
8333 BFD_ASSERT (h
->dynindx
!= -1
8334 && (h
->root
.type
== bfd_link_hash_defined
8335 || h
->root
.type
== bfd_link_hash_defweak
));
8337 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
8338 RELOC_SECTION (htab
, ".bss"));
8339 BFD_ASSERT (s
!= NULL
);
8342 rel
.r_offset
= (h
->root
.u
.def
.value
8343 + h
->root
.u
.def
.section
->output_section
->vma
8344 + h
->root
.u
.def
.section
->output_offset
);
8345 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
8346 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
8347 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8350 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
8351 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
8352 to the ".got" section. */
8353 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
8354 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
8355 sym
->st_shndx
= SHN_ABS
;
8360 /* Finish up the dynamic sections. */
8363 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
8369 dynobj
= elf_hash_table (info
)->dynobj
;
8371 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
8372 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
8373 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
8375 if (elf_hash_table (info
)->dynamic_sections_created
)
8378 Elf32_External_Dyn
*dyncon
, *dynconend
;
8379 struct elf32_arm_link_hash_table
*htab
;
8381 htab
= elf32_arm_hash_table (info
);
8382 splt
= bfd_get_section_by_name (dynobj
, ".plt");
8383 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
8385 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
8386 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
8388 for (; dyncon
< dynconend
; dyncon
++)
8390 Elf_Internal_Dyn dyn
;
8394 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
8405 goto get_vma_if_bpabi
;
8408 goto get_vma_if_bpabi
;
8411 goto get_vma_if_bpabi
;
8413 name
= ".gnu.version";
8414 goto get_vma_if_bpabi
;
8416 name
= ".gnu.version_d";
8417 goto get_vma_if_bpabi
;
8419 name
= ".gnu.version_r";
8420 goto get_vma_if_bpabi
;
8426 name
= RELOC_SECTION (htab
, ".plt");
8428 s
= bfd_get_section_by_name (output_bfd
, name
);
8429 BFD_ASSERT (s
!= NULL
);
8430 if (!htab
->symbian_p
)
8431 dyn
.d_un
.d_ptr
= s
->vma
;
8433 /* In the BPABI, tags in the PT_DYNAMIC section point
8434 at the file offset, not the memory address, for the
8435 convenience of the post linker. */
8436 dyn
.d_un
.d_ptr
= s
->filepos
;
8437 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8441 if (htab
->symbian_p
)
8446 s
= bfd_get_section_by_name (output_bfd
,
8447 RELOC_SECTION (htab
, ".plt"));
8448 BFD_ASSERT (s
!= NULL
);
8449 dyn
.d_un
.d_val
= s
->size
;
8450 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8455 if (!htab
->symbian_p
)
8457 /* My reading of the SVR4 ABI indicates that the
8458 procedure linkage table relocs (DT_JMPREL) should be
8459 included in the overall relocs (DT_REL). This is
8460 what Solaris does. However, UnixWare can not handle
8461 that case. Therefore, we override the DT_RELSZ entry
8462 here to make it not include the JMPREL relocs. Since
8463 the linker script arranges for .rel(a).plt to follow all
8464 other relocation sections, we don't have to worry
8465 about changing the DT_REL entry. */
8466 s
= bfd_get_section_by_name (output_bfd
,
8467 RELOC_SECTION (htab
, ".plt"));
8469 dyn
.d_un
.d_val
-= s
->size
;
8470 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8477 /* In the BPABI, the DT_REL tag must point at the file
8478 offset, not the VMA, of the first relocation
8479 section. So, we use code similar to that in
8480 elflink.c, but do not check for SHF_ALLOC on the
8481 relcoation section, since relocations sections are
8482 never allocated under the BPABI. The comments above
8483 about Unixware notwithstanding, we include all of the
8484 relocations here. */
8485 if (htab
->symbian_p
)
8488 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
8489 ? SHT_REL
: SHT_RELA
);
8491 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
8493 Elf_Internal_Shdr
*hdr
8494 = elf_elfsections (output_bfd
)[i
];
8495 if (hdr
->sh_type
== type
)
8497 if (dyn
.d_tag
== DT_RELSZ
8498 || dyn
.d_tag
== DT_RELASZ
)
8499 dyn
.d_un
.d_val
+= hdr
->sh_size
;
8500 else if ((ufile_ptr
) hdr
->sh_offset
8501 <= dyn
.d_un
.d_val
- 1)
8502 dyn
.d_un
.d_val
= hdr
->sh_offset
;
8505 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8509 /* Set the bottom bit of DT_INIT/FINI if the
8510 corresponding function is Thumb. */
8512 name
= info
->init_function
;
8515 name
= info
->fini_function
;
8517 /* If it wasn't set by elf_bfd_final_link
8518 then there is nothing to adjust. */
8519 if (dyn
.d_un
.d_val
!= 0)
8521 struct elf_link_hash_entry
* eh
;
8523 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
8524 FALSE
, FALSE
, TRUE
);
8525 if (eh
!= (struct elf_link_hash_entry
*) NULL
8526 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
8528 dyn
.d_un
.d_val
|= 1;
8529 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8536 /* Fill in the first entry in the procedure linkage table. */
8537 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
8539 const bfd_vma
*plt0_entry
;
8540 bfd_vma got_address
, plt_address
, got_displacement
;
8542 /* Calculate the addresses of the GOT and PLT. */
8543 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
8544 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
8546 if (htab
->vxworks_p
)
8548 /* The VxWorks GOT is relocated by the dynamic linker.
8549 Therefore, we must emit relocations rather than simply
8550 computing the values now. */
8551 Elf_Internal_Rela rel
;
8553 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
8554 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
8555 splt
->contents
+ 0);
8556 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
8557 splt
->contents
+ 4);
8558 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
8559 splt
->contents
+ 8);
8560 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
8562 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
8563 rel
.r_offset
= plt_address
+ 12;
8564 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
8566 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
8567 htab
->srelplt2
->contents
);
8571 got_displacement
= got_address
- (plt_address
+ 16);
8573 plt0_entry
= elf32_arm_plt0_entry
;
8574 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
8575 splt
->contents
+ 0);
8576 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
8577 splt
->contents
+ 4);
8578 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
8579 splt
->contents
+ 8);
8580 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
8581 splt
->contents
+ 12);
8583 #ifdef FOUR_WORD_PLT
8584 /* The displacement value goes in the otherwise-unused
8585 last word of the second entry. */
8586 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
8588 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
8593 /* UnixWare sets the entsize of .plt to 4, although that doesn't
8594 really seem like the right value. */
8595 if (splt
->output_section
->owner
== output_bfd
)
8596 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
8598 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
8600 /* Correct the .rel(a).plt.unloaded relocations. They will have
8601 incorrect symbol indexes. */
8605 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
8606 / htab
->plt_entry_size
);
8607 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
8609 for (; num_plts
; num_plts
--)
8611 Elf_Internal_Rela rel
;
8613 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
8614 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
8615 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
8616 p
+= RELOC_SIZE (htab
);
8618 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
8619 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
8620 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
8621 p
+= RELOC_SIZE (htab
);
8626 /* Fill in the first three entries in the global offset table. */
8632 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
8634 bfd_put_32 (output_bfd
,
8635 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
8637 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
8638 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
8641 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
8648 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
8650 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
8651 struct elf32_arm_link_hash_table
*globals
;
8653 i_ehdrp
= elf_elfheader (abfd
);
8655 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
8656 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
8658 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
8659 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
8663 globals
= elf32_arm_hash_table (link_info
);
8664 if (globals
->byteswap_code
)
8665 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
8669 static enum elf_reloc_type_class
8670 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
8672 switch ((int) ELF32_R_TYPE (rela
->r_info
))
8674 case R_ARM_RELATIVE
:
8675 return reloc_class_relative
;
8676 case R_ARM_JUMP_SLOT
:
8677 return reloc_class_plt
;
8679 return reloc_class_copy
;
8681 return reloc_class_normal
;
8685 /* Set the right machine number for an Arm ELF file. */
8688 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
8690 if (hdr
->sh_type
== SHT_NOTE
)
8691 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
8697 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
8699 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
8702 /* Return TRUE if this is an unwinding table entry. */
8705 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
8707 return (CONST_STRNEQ (name
, ELF_STRING_ARM_unwind
)
8708 || CONST_STRNEQ (name
, ELF_STRING_ARM_unwind_once
));
8712 /* Set the type and flags for an ARM section. We do this by
8713 the section name, which is a hack, but ought to work. */
8716 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
8720 name
= bfd_get_section_name (abfd
, sec
);
8722 if (is_arm_elf_unwind_section_name (abfd
, name
))
8724 hdr
->sh_type
= SHT_ARM_EXIDX
;
8725 hdr
->sh_flags
|= SHF_LINK_ORDER
;
8727 else if (strcmp(name
, ".ARM.attributes") == 0)
8729 hdr
->sh_type
= SHT_ARM_ATTRIBUTES
;
8734 /* Parse an Arm EABI attributes section. */
8736 elf32_arm_parse_attributes (bfd
*abfd
, Elf_Internal_Shdr
* hdr
)
8742 contents
= bfd_malloc (hdr
->sh_size
);
8745 if (!bfd_get_section_contents (abfd
, hdr
->bfd_section
, contents
, 0,
8754 len
= hdr
->sh_size
- 1;
8758 bfd_vma section_len
;
8760 section_len
= bfd_get_32 (abfd
, p
);
8762 if (section_len
> len
)
8765 namelen
= strlen ((char *)p
) + 1;
8766 section_len
-= namelen
+ 4;
8767 if (strcmp((char *)p
, "aeabi") != 0)
8769 /* Vendor section. Ignore it. */
8770 p
+= namelen
+ section_len
;
8775 while (section_len
> 0)
8780 bfd_vma subsection_len
;
8783 tag
= read_unsigned_leb128 (abfd
, p
, &n
);
8785 subsection_len
= bfd_get_32 (abfd
, p
);
8787 if (subsection_len
> section_len
)
8788 subsection_len
= section_len
;
8789 section_len
-= subsection_len
;
8790 subsection_len
-= n
+ 4;
8791 end
= p
+ subsection_len
;
8797 bfd_boolean is_string
;
8799 tag
= read_unsigned_leb128 (abfd
, p
, &n
);
8801 if (tag
== 4 || tag
== 5)
8806 is_string
= (tag
& 1) != 0;
8807 if (tag
== Tag_compatibility
)
8809 val
= read_unsigned_leb128 (abfd
, p
, &n
);
8811 elf32_arm_add_eabi_attr_compat (abfd
, val
,
8813 p
+= strlen ((char *)p
) + 1;
8817 elf32_arm_add_eabi_attr_string (abfd
, tag
,
8819 p
+= strlen ((char *)p
) + 1;
8823 val
= read_unsigned_leb128 (abfd
, p
, &n
);
8825 elf32_arm_add_eabi_attr_int (abfd
, tag
, val
);
8831 /* Don't have anywhere convenient to attach these.
8832 Fall through for now. */
8834 /* Ignore things we don't kow about. */
8835 p
+= subsection_len
;
8846 /* Handle an ARM specific section when reading an object file. This is
8847 called when bfd_section_from_shdr finds a section with an unknown
8851 elf32_arm_section_from_shdr (bfd
*abfd
,
8852 Elf_Internal_Shdr
* hdr
,
8856 /* There ought to be a place to keep ELF backend specific flags, but
8857 at the moment there isn't one. We just keep track of the
8858 sections by their name, instead. Fortunately, the ABI gives
8859 names for all the ARM specific sections, so we will probably get
8861 switch (hdr
->sh_type
)
8864 case SHT_ARM_PREEMPTMAP
:
8865 case SHT_ARM_ATTRIBUTES
:
8872 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
8875 if (hdr
->sh_type
== SHT_ARM_ATTRIBUTES
)
8876 elf32_arm_parse_attributes(abfd
, hdr
);
8880 /* A structure used to record a list of sections, independently
8881 of the next and prev fields in the asection structure. */
8882 typedef struct section_list
8885 struct section_list
* next
;
8886 struct section_list
* prev
;
8890 /* Unfortunately we need to keep a list of sections for which
8891 an _arm_elf_section_data structure has been allocated. This
8892 is because it is possible for functions like elf32_arm_write_section
8893 to be called on a section which has had an elf_data_structure
8894 allocated for it (and so the used_by_bfd field is valid) but
8895 for which the ARM extended version of this structure - the
8896 _arm_elf_section_data structure - has not been allocated. */
8897 static section_list
* sections_with_arm_elf_section_data
= NULL
;
8900 record_section_with_arm_elf_section_data (asection
* sec
)
8902 struct section_list
* entry
;
8904 entry
= bfd_malloc (sizeof (* entry
));
8908 entry
->next
= sections_with_arm_elf_section_data
;
8910 if (entry
->next
!= NULL
)
8911 entry
->next
->prev
= entry
;
8912 sections_with_arm_elf_section_data
= entry
;
8915 static struct section_list
*
8916 find_arm_elf_section_entry (asection
* sec
)
8918 struct section_list
* entry
;
8919 static struct section_list
* last_entry
= NULL
;
8921 /* This is a short cut for the typical case where the sections are added
8922 to the sections_with_arm_elf_section_data list in forward order and
8923 then looked up here in backwards order. This makes a real difference
8924 to the ld-srec/sec64k.exp linker test. */
8925 entry
= sections_with_arm_elf_section_data
;
8926 if (last_entry
!= NULL
)
8928 if (last_entry
->sec
== sec
)
8930 else if (last_entry
->next
!= NULL
8931 && last_entry
->next
->sec
== sec
)
8932 entry
= last_entry
->next
;
8935 for (; entry
; entry
= entry
->next
)
8936 if (entry
->sec
== sec
)
8940 /* Record the entry prior to this one - it is the entry we are most
8941 likely to want to locate next time. Also this way if we have been
8942 called from unrecord_section_with_arm_elf_section_data() we will not
8943 be caching a pointer that is about to be freed. */
8944 last_entry
= entry
->prev
;
8949 static _arm_elf_section_data
*
8950 get_arm_elf_section_data (asection
* sec
)
8952 struct section_list
* entry
;
8954 entry
= find_arm_elf_section_entry (sec
);
8957 return elf32_arm_section_data (entry
->sec
);
8963 unrecord_section_with_arm_elf_section_data (asection
* sec
)
8965 struct section_list
* entry
;
8967 entry
= find_arm_elf_section_entry (sec
);
8971 if (entry
->prev
!= NULL
)
8972 entry
->prev
->next
= entry
->next
;
8973 if (entry
->next
!= NULL
)
8974 entry
->next
->prev
= entry
->prev
;
8975 if (entry
== sections_with_arm_elf_section_data
)
8976 sections_with_arm_elf_section_data
= entry
->next
;
8981 /* Called for each symbol. Builds a section map based on mapping symbols.
8982 Does not alter any of the symbols. */
8985 elf32_arm_output_symbol_hook (struct bfd_link_info
*info
,
8987 Elf_Internal_Sym
*elfsym
,
8988 asection
*input_sec
,
8989 struct elf_link_hash_entry
*h
)
8992 elf32_arm_section_map
*map
;
8993 elf32_arm_section_map
*newmap
;
8994 _arm_elf_section_data
*arm_data
;
8995 struct elf32_arm_link_hash_table
*globals
;
8997 globals
= elf32_arm_hash_table (info
);
8998 if (globals
->vxworks_p
8999 && !elf_vxworks_link_output_symbol_hook (info
, name
, elfsym
,
9003 /* Only do this on final link. */
9004 if (info
->relocatable
)
9007 /* Only build a map if we need to byteswap code. */
9008 if (!globals
->byteswap_code
)
9011 /* We only want mapping symbols. */
9012 if (!bfd_is_arm_special_symbol_name (name
, BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
9015 /* If this section has not been allocated an _arm_elf_section_data
9016 structure then we cannot record anything. */
9017 arm_data
= get_arm_elf_section_data (input_sec
);
9018 if (arm_data
== NULL
)
9021 mapcount
= arm_data
->mapcount
+ 1;
9022 map
= arm_data
->map
;
9024 /* TODO: This may be inefficient, but we probably don't usually have many
9025 mapping symbols per section. */
9026 newmap
= bfd_realloc (map
, mapcount
* sizeof (* map
));
9029 arm_data
->map
= newmap
;
9030 arm_data
->mapcount
= mapcount
;
9032 newmap
[mapcount
- 1].vma
= elfsym
->st_value
;
9033 newmap
[mapcount
- 1].type
= name
[1];
9042 struct bfd_link_info
*info
;
9045 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
9046 asection
*, struct elf_link_hash_entry
*);
9047 } output_arch_syminfo
;
9049 enum map_symbol_type
9057 /* Output a single PLT mapping symbol. */
9060 elf32_arm_ouput_plt_map_sym (output_arch_syminfo
*osi
,
9061 enum map_symbol_type type
,
9064 static const char *names
[3] = {"$a", "$t", "$d"};
9065 struct elf32_arm_link_hash_table
*htab
;
9066 Elf_Internal_Sym sym
;
9068 htab
= elf32_arm_hash_table (osi
->info
);
9069 sym
.st_value
= osi
->plt_offset
+ offset
;
9072 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
9073 sym
.st_shndx
= osi
->plt_shndx
;
9074 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, htab
->splt
, NULL
))
9080 /* Output mapping symbols for PLT entries associated with H. */
9083 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
9085 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
9086 struct elf32_arm_link_hash_table
*htab
;
9087 struct elf32_arm_link_hash_entry
*eh
;
9090 htab
= elf32_arm_hash_table (osi
->info
);
9092 if (h
->root
.type
== bfd_link_hash_indirect
)
9095 if (h
->root
.type
== bfd_link_hash_warning
)
9096 /* When warning symbols are created, they **replace** the "real"
9097 entry in the hash table, thus we never get to see the real
9098 symbol in a hash traversal. So look at it now. */
9099 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9101 if (h
->plt
.offset
== (bfd_vma
) -1)
9104 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9105 addr
= h
->plt
.offset
;
9106 if (htab
->symbian_p
)
9108 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9110 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
9113 else if (htab
->vxworks_p
)
9115 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9117 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
9119 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
9121 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
9126 bfd_boolean thumb_stub
;
9128 thumb_stub
= eh
->plt_thumb_refcount
> 0 && !htab
->use_blx
;
9131 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
9134 #ifdef FOUR_WORD_PLT
9135 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9137 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
9140 /* A three-word PLT with no Thumb thunk contains only Arm code,
9141 so only need to output a mapping symbol for the first PLT entry and
9142 entries with thumb thunks. */
9143 if (thumb_stub
|| addr
== 20)
9145 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9155 /* Output mapping symbols for the PLT. */
9158 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
9159 struct bfd_link_info
*info
,
9160 void *finfo
, bfd_boolean (*func
) (void *, const char *,
9163 struct elf_link_hash_entry
*))
9165 output_arch_syminfo osi
;
9166 struct elf32_arm_link_hash_table
*htab
;
9168 htab
= elf32_arm_hash_table (info
);
9169 if (!htab
->splt
|| htab
->splt
->size
== 0)
9172 check_use_blx(htab
);
9176 osi
.plt_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
9177 htab
->splt
->output_section
);
9178 osi
.plt_offset
= htab
->splt
->output_section
->vma
;
9180 /* Output mapping symbols for the plt header. SymbianOS does not have a
9182 if (htab
->vxworks_p
)
9184 /* VxWorks shared libraries have no PLT header. */
9187 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
9189 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 12))
9193 else if (!htab
->symbian_p
)
9195 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
9197 #ifndef FOUR_WORD_PLT
9198 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 16))
9203 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
9207 /* Allocate target specific section data. */
9210 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
9212 if (!sec
->used_by_bfd
)
9214 _arm_elf_section_data
*sdata
;
9215 bfd_size_type amt
= sizeof (*sdata
);
9217 sdata
= bfd_zalloc (abfd
, amt
);
9220 sec
->used_by_bfd
= sdata
;
9223 record_section_with_arm_elf_section_data (sec
);
9225 return _bfd_elf_new_section_hook (abfd
, sec
);
9229 /* Used to order a list of mapping symbols by address. */
9232 elf32_arm_compare_mapping (const void * a
, const void * b
)
9234 return ((const elf32_arm_section_map
*) a
)->vma
9235 > ((const elf32_arm_section_map
*) b
)->vma
;
9239 /* Do code byteswapping. Return FALSE afterwards so that the section is
9240 written out as normal. */
9243 elf32_arm_write_section (bfd
*output_bfd ATTRIBUTE_UNUSED
, asection
*sec
,
9247 _arm_elf_section_data
*arm_data
;
9248 elf32_arm_section_map
*map
;
9255 /* If this section has not been allocated an _arm_elf_section_data
9256 structure then we cannot record anything. */
9257 arm_data
= get_arm_elf_section_data (sec
);
9258 if (arm_data
== NULL
)
9261 mapcount
= arm_data
->mapcount
;
9262 map
= arm_data
->map
;
9267 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
9269 offset
= sec
->output_section
->vma
+ sec
->output_offset
;
9270 ptr
= map
[0].vma
- offset
;
9271 for (i
= 0; i
< mapcount
; i
++)
9273 if (i
== mapcount
- 1)
9276 end
= map
[i
+ 1].vma
- offset
;
9278 switch (map
[i
].type
)
9281 /* Byte swap code words. */
9282 while (ptr
+ 3 < end
)
9284 tmp
= contents
[ptr
];
9285 contents
[ptr
] = contents
[ptr
+ 3];
9286 contents
[ptr
+ 3] = tmp
;
9287 tmp
= contents
[ptr
+ 1];
9288 contents
[ptr
+ 1] = contents
[ptr
+ 2];
9289 contents
[ptr
+ 2] = tmp
;
9295 /* Byte swap code halfwords. */
9296 while (ptr
+ 1 < end
)
9298 tmp
= contents
[ptr
];
9299 contents
[ptr
] = contents
[ptr
+ 1];
9300 contents
[ptr
+ 1] = tmp
;
9306 /* Leave data alone. */
9313 arm_data
->mapcount
= 0;
9314 arm_data
->map
= NULL
;
9315 unrecord_section_with_arm_elf_section_data (sec
);
9321 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
9323 void * ignore ATTRIBUTE_UNUSED
)
9325 unrecord_section_with_arm_elf_section_data (sec
);
9329 elf32_arm_close_and_cleanup (bfd
* abfd
)
9332 bfd_map_over_sections (abfd
,
9333 unrecord_section_via_map_over_sections
,
9336 return _bfd_elf_close_and_cleanup (abfd
);
9340 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
9343 bfd_map_over_sections (abfd
,
9344 unrecord_section_via_map_over_sections
,
9347 return _bfd_free_cached_info (abfd
);
9350 /* Display STT_ARM_TFUNC symbols as functions. */
9353 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
9356 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
9358 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
9359 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
9363 /* Mangle thumb function symbols as we read them in. */
9366 elf32_arm_swap_symbol_in (bfd
* abfd
,
9369 Elf_Internal_Sym
*dst
)
9371 if (!bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
9374 /* New EABI objects mark thumb function symbols by setting the low bit of
9375 the address. Turn these into STT_ARM_TFUNC. */
9376 if (ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
9377 && (dst
->st_value
& 1))
9379 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
9380 dst
->st_value
&= ~(bfd_vma
) 1;
9386 /* Mangle thumb function symbols as we write them out. */
9389 elf32_arm_swap_symbol_out (bfd
*abfd
,
9390 const Elf_Internal_Sym
*src
,
9394 Elf_Internal_Sym newsym
;
9396 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
9397 of the address set, as per the new EABI. We do this unconditionally
9398 because objcopy does not set the elf header flags until after
9399 it writes out the symbol table. */
9400 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
9403 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
9404 if (newsym
.st_shndx
!= SHN_UNDEF
)
9406 /* Do this only for defined symbols. At link type, the static
9407 linker will simulate the work of dynamic linker of resolving
9408 symbols and will carry over the thumbness of found symbols to
9409 the output symbol table. It's not clear how it happens, but
9410 the thumbness of undefined symbols can well be different at
9411 runtime, and writing '1' for them will be confusing for users
9412 and possibly for dynamic linker itself.
9414 newsym
.st_value
|= 1;
9419 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
9422 /* Add the PT_ARM_EXIDX program header. */
9425 elf32_arm_modify_segment_map (bfd
*abfd
,
9426 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
9428 struct elf_segment_map
*m
;
9431 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
9432 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
9434 /* If there is already a PT_ARM_EXIDX header, then we do not
9435 want to add another one. This situation arises when running
9436 "strip"; the input binary already has the header. */
9437 m
= elf_tdata (abfd
)->segment_map
;
9438 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
9442 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
9445 m
->p_type
= PT_ARM_EXIDX
;
9447 m
->sections
[0] = sec
;
9449 m
->next
= elf_tdata (abfd
)->segment_map
;
9450 elf_tdata (abfd
)->segment_map
= m
;
9457 /* We may add a PT_ARM_EXIDX program header. */
9460 elf32_arm_additional_program_headers (bfd
*abfd
,
9461 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
9465 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
9466 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
9472 /* We use this to override swap_symbol_in and swap_symbol_out. */
9473 const struct elf_size_info elf32_arm_size_info
= {
9474 sizeof (Elf32_External_Ehdr
),
9475 sizeof (Elf32_External_Phdr
),
9476 sizeof (Elf32_External_Shdr
),
9477 sizeof (Elf32_External_Rel
),
9478 sizeof (Elf32_External_Rela
),
9479 sizeof (Elf32_External_Sym
),
9480 sizeof (Elf32_External_Dyn
),
9481 sizeof (Elf_External_Note
),
9485 ELFCLASS32
, EV_CURRENT
,
9486 bfd_elf32_write_out_phdrs
,
9487 bfd_elf32_write_shdrs_and_ehdr
,
9488 bfd_elf32_write_relocs
,
9489 elf32_arm_swap_symbol_in
,
9490 elf32_arm_swap_symbol_out
,
9491 bfd_elf32_slurp_reloc_table
,
9492 bfd_elf32_slurp_symbol_table
,
9493 bfd_elf32_swap_dyn_in
,
9494 bfd_elf32_swap_dyn_out
,
9495 bfd_elf32_swap_reloc_in
,
9496 bfd_elf32_swap_reloc_out
,
9497 bfd_elf32_swap_reloca_in
,
9498 bfd_elf32_swap_reloca_out
9501 #define ELF_ARCH bfd_arch_arm
9502 #define ELF_MACHINE_CODE EM_ARM
9503 #ifdef __QNXTARGET__
9504 #define ELF_MAXPAGESIZE 0x1000
9506 #define ELF_MAXPAGESIZE 0x8000
9508 #define ELF_MINPAGESIZE 0x1000
9509 #define ELF_COMMONPAGESIZE 0x1000
9511 #define bfd_elf32_mkobject elf32_arm_mkobject
9513 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
9514 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
9515 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
9516 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
9517 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
9518 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
9519 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
9520 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
9521 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
9522 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
9523 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
9524 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
9525 #define bfd_elf32_bfd_final_link elf32_arm_bfd_final_link
9527 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
9528 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
9529 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
9530 #define elf_backend_check_relocs elf32_arm_check_relocs
9531 #define elf_backend_relocate_section elf32_arm_relocate_section
9532 #define elf_backend_write_section elf32_arm_write_section
9533 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
9534 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
9535 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
9536 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
9537 #define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook
9538 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
9539 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
9540 #define elf_backend_post_process_headers elf32_arm_post_process_headers
9541 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
9542 #define elf_backend_object_p elf32_arm_object_p
9543 #define elf_backend_section_flags elf32_arm_section_flags
9544 #define elf_backend_fake_sections elf32_arm_fake_sections
9545 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
9546 #define elf_backend_final_write_processing elf32_arm_final_write_processing
9547 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
9548 #define elf_backend_symbol_processing elf32_arm_symbol_processing
9549 #define elf_backend_size_info elf32_arm_size_info
9550 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
9551 #define elf_backend_additional_program_headers \
9552 elf32_arm_additional_program_headers
9553 #define elf_backend_output_arch_local_syms \
9554 elf32_arm_output_arch_local_syms
9555 #define elf_backend_begin_write_processing \
9556 elf32_arm_begin_write_processing
9558 #define elf_backend_can_refcount 1
9559 #define elf_backend_can_gc_sections 1
9560 #define elf_backend_plt_readonly 1
9561 #define elf_backend_want_got_plt 1
9562 #define elf_backend_want_plt_sym 0
9563 #define elf_backend_may_use_rel_p 1
9564 #define elf_backend_may_use_rela_p 0
9565 #define elf_backend_default_use_rela_p 0
9566 #define elf_backend_rela_normal 0
9568 #define elf_backend_got_header_size 12
9570 #include "elf32-target.h"
9572 /* VxWorks Targets */
9574 #undef TARGET_LITTLE_SYM
9575 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
9576 #undef TARGET_LITTLE_NAME
9577 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
9578 #undef TARGET_BIG_SYM
9579 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
9580 #undef TARGET_BIG_NAME
9581 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
9583 /* Like elf32_arm_link_hash_table_create -- but overrides
9584 appropriately for VxWorks. */
9585 static struct bfd_link_hash_table
*
9586 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
9588 struct bfd_link_hash_table
*ret
;
9590 ret
= elf32_arm_link_hash_table_create (abfd
);
9593 struct elf32_arm_link_hash_table
*htab
9594 = (struct elf32_arm_link_hash_table
*) ret
;
9596 htab
->vxworks_p
= 1;
9602 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
9604 elf32_arm_final_write_processing (abfd
, linker
);
9605 elf_vxworks_final_write_processing (abfd
, linker
);
9609 #define elf32_bed elf32_arm_vxworks_bed
9611 #undef bfd_elf32_bfd_link_hash_table_create
9612 #define bfd_elf32_bfd_link_hash_table_create \
9613 elf32_arm_vxworks_link_hash_table_create
9614 #undef elf_backend_add_symbol_hook
9615 #define elf_backend_add_symbol_hook \
9616 elf_vxworks_add_symbol_hook
9617 #undef elf_backend_final_write_processing
9618 #define elf_backend_final_write_processing \
9619 elf32_arm_vxworks_final_write_processing
9620 #undef elf_backend_emit_relocs
9621 #define elf_backend_emit_relocs \
9622 elf_vxworks_emit_relocs
9624 #undef elf_backend_may_use_rel_p
9625 #define elf_backend_may_use_rel_p 0
9626 #undef elf_backend_may_use_rela_p
9627 #define elf_backend_may_use_rela_p 1
9628 #undef elf_backend_default_use_rela_p
9629 #define elf_backend_default_use_rela_p 1
9630 #undef elf_backend_rela_normal
9631 #define elf_backend_rela_normal 1
9632 #undef elf_backend_want_plt_sym
9633 #define elf_backend_want_plt_sym 1
9634 #undef ELF_MAXPAGESIZE
9635 #define ELF_MAXPAGESIZE 0x1000
9637 #include "elf32-target.h"
9640 /* Symbian OS Targets */
9642 #undef TARGET_LITTLE_SYM
9643 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
9644 #undef TARGET_LITTLE_NAME
9645 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
9646 #undef TARGET_BIG_SYM
9647 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
9648 #undef TARGET_BIG_NAME
9649 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
9651 /* Like elf32_arm_link_hash_table_create -- but overrides
9652 appropriately for Symbian OS. */
9653 static struct bfd_link_hash_table
*
9654 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
9656 struct bfd_link_hash_table
*ret
;
9658 ret
= elf32_arm_link_hash_table_create (abfd
);
9661 struct elf32_arm_link_hash_table
*htab
9662 = (struct elf32_arm_link_hash_table
*)ret
;
9663 /* There is no PLT header for Symbian OS. */
9664 htab
->plt_header_size
= 0;
9665 /* The PLT entries are each three instructions. */
9666 htab
->plt_entry_size
= 4 * NUM_ELEM (elf32_arm_symbian_plt_entry
);
9667 htab
->symbian_p
= 1;
9668 /* Symbian uses armv5t or above, so use_blx is always true. */
9670 htab
->root
.is_relocatable_executable
= 1;
9675 static const struct bfd_elf_special_section
9676 elf32_arm_symbian_special_sections
[] =
9678 /* In a BPABI executable, the dynamic linking sections do not go in
9679 the loadable read-only segment. The post-linker may wish to
9680 refer to these sections, but they are not part of the final
9682 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC
, 0 },
9683 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB
, 0 },
9684 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM
, 0 },
9685 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS
, 0 },
9686 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH
, 0 },
9687 /* These sections do not need to be writable as the SymbianOS
9688 postlinker will arrange things so that no dynamic relocation is
9690 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
9691 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
9692 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
9693 { NULL
, 0, 0, 0, 0 }
9697 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
9698 struct bfd_link_info
*link_info
)
9700 /* BPABI objects are never loaded directly by an OS kernel; they are
9701 processed by a postlinker first, into an OS-specific format. If
9702 the D_PAGED bit is set on the file, BFD will align segments on
9703 page boundaries, so that an OS can directly map the file. With
9704 BPABI objects, that just results in wasted space. In addition,
9705 because we clear the D_PAGED bit, map_sections_to_segments will
9706 recognize that the program headers should not be mapped into any
9707 loadable segment. */
9708 abfd
->flags
&= ~D_PAGED
;
9709 elf32_arm_begin_write_processing(abfd
, link_info
);
9713 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
9714 struct bfd_link_info
*info
)
9716 struct elf_segment_map
*m
;
9719 /* BPABI shared libraries and executables should have a PT_DYNAMIC
9720 segment. However, because the .dynamic section is not marked
9721 with SEC_LOAD, the generic ELF code will not create such a
9723 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
9726 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
9727 if (m
->p_type
== PT_DYNAMIC
)
9732 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
9733 m
->next
= elf_tdata (abfd
)->segment_map
;
9734 elf_tdata (abfd
)->segment_map
= m
;
9738 /* Also call the generic arm routine. */
9739 return elf32_arm_modify_segment_map (abfd
, info
);
9743 #define elf32_bed elf32_arm_symbian_bed
9745 /* The dynamic sections are not allocated on SymbianOS; the postlinker
9746 will process them and then discard them. */
9747 #undef ELF_DYNAMIC_SEC_FLAGS
9748 #define ELF_DYNAMIC_SEC_FLAGS \
9749 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
9751 #undef bfd_elf32_bfd_link_hash_table_create
9752 #define bfd_elf32_bfd_link_hash_table_create \
9753 elf32_arm_symbian_link_hash_table_create
9754 #undef elf_backend_add_symbol_hook
9756 #undef elf_backend_special_sections
9757 #define elf_backend_special_sections elf32_arm_symbian_special_sections
9759 #undef elf_backend_begin_write_processing
9760 #define elf_backend_begin_write_processing \
9761 elf32_arm_symbian_begin_write_processing
9762 #undef elf_backend_final_write_processing
9763 #define elf_backend_final_write_processing \
9764 elf32_arm_final_write_processing
9765 #undef elf_backend_emit_relocs
9767 #undef elf_backend_modify_segment_map
9768 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
9770 /* There is no .got section for BPABI objects, and hence no header. */
9771 #undef elf_backend_got_header_size
9772 #define elf_backend_got_header_size 0
9774 /* Similarly, there is no .got.plt section. */
9775 #undef elf_backend_want_got_plt
9776 #define elf_backend_want_got_plt 0
9778 #undef elf_backend_may_use_rel_p
9779 #define elf_backend_may_use_rel_p 1
9780 #undef elf_backend_may_use_rela_p
9781 #define elf_backend_may_use_rela_p 0
9782 #undef elf_backend_default_use_rela_p
9783 #define elf_backend_default_use_rela_p 0
9784 #undef elf_backend_rela_normal
9785 #define elf_backend_rela_normal 0
9786 #undef elf_backend_want_plt_sym
9787 #define elf_backend_want_plt_sym 0
9788 #undef ELF_MAXPAGESIZE
9789 #define ELF_MAXPAGESIZE 0x8000
9791 #include "elf32-target.h"