1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
24 #include "libiberty.h"
27 #include "elf-vxworks.h"
30 /* Return the relocation section associated with NAME. HTAB is the
31 bfd's elf32_arm_link_hash_entry. */
32 #define RELOC_SECTION(HTAB, NAME) \
33 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
35 /* Return size of a relocation entry. HTAB is the bfd's
36 elf32_arm_link_hash_entry. */
37 #define RELOC_SIZE(HTAB) \
39 ? sizeof (Elf32_External_Rel) \
40 : sizeof (Elf32_External_Rela))
42 /* Return function to swap relocations in. HTAB is the bfd's
43 elf32_arm_link_hash_entry. */
44 #define SWAP_RELOC_IN(HTAB) \
46 ? bfd_elf32_swap_reloc_in \
47 : bfd_elf32_swap_reloca_in)
49 /* Return function to swap relocations out. HTAB is the bfd's
50 elf32_arm_link_hash_entry. */
51 #define SWAP_RELOC_OUT(HTAB) \
53 ? bfd_elf32_swap_reloc_out \
54 : bfd_elf32_swap_reloca_out)
56 #define elf_info_to_howto 0
57 #define elf_info_to_howto_rel elf32_arm_info_to_howto
59 #define ARM_ELF_ABI_VERSION 0
60 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
62 static struct elf_backend_data elf32_arm_vxworks_bed
;
64 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
65 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
68 static reloc_howto_type elf32_arm_howto_table_1
[] =
71 HOWTO (R_ARM_NONE
, /* type */
73 0, /* size (0 = byte, 1 = short, 2 = long) */
75 FALSE
, /* pc_relative */
77 complain_overflow_dont
,/* complain_on_overflow */
78 bfd_elf_generic_reloc
, /* special_function */
79 "R_ARM_NONE", /* name */
80 FALSE
, /* partial_inplace */
83 FALSE
), /* pcrel_offset */
85 HOWTO (R_ARM_PC24
, /* type */
87 2, /* size (0 = byte, 1 = short, 2 = long) */
89 TRUE
, /* pc_relative */
91 complain_overflow_signed
,/* complain_on_overflow */
92 bfd_elf_generic_reloc
, /* special_function */
93 "R_ARM_PC24", /* name */
94 FALSE
, /* partial_inplace */
95 0x00ffffff, /* src_mask */
96 0x00ffffff, /* dst_mask */
97 TRUE
), /* pcrel_offset */
100 HOWTO (R_ARM_ABS32
, /* type */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
104 FALSE
, /* pc_relative */
106 complain_overflow_bitfield
,/* complain_on_overflow */
107 bfd_elf_generic_reloc
, /* special_function */
108 "R_ARM_ABS32", /* name */
109 FALSE
, /* partial_inplace */
110 0xffffffff, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE
), /* pcrel_offset */
114 /* standard 32bit pc-relative reloc */
115 HOWTO (R_ARM_REL32
, /* type */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
119 TRUE
, /* pc_relative */
121 complain_overflow_bitfield
,/* complain_on_overflow */
122 bfd_elf_generic_reloc
, /* special_function */
123 "R_ARM_REL32", /* name */
124 FALSE
, /* partial_inplace */
125 0xffffffff, /* src_mask */
126 0xffffffff, /* dst_mask */
127 TRUE
), /* pcrel_offset */
129 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
130 HOWTO (R_ARM_LDR_PC_G0
, /* type */
132 0, /* size (0 = byte, 1 = short, 2 = long) */
134 TRUE
, /* pc_relative */
136 complain_overflow_dont
,/* complain_on_overflow */
137 bfd_elf_generic_reloc
, /* special_function */
138 "R_ARM_LDR_PC_G0", /* name */
139 FALSE
, /* partial_inplace */
140 0xffffffff, /* src_mask */
141 0xffffffff, /* dst_mask */
142 TRUE
), /* pcrel_offset */
144 /* 16 bit absolute */
145 HOWTO (R_ARM_ABS16
, /* type */
147 1, /* size (0 = byte, 1 = short, 2 = long) */
149 FALSE
, /* pc_relative */
151 complain_overflow_bitfield
,/* complain_on_overflow */
152 bfd_elf_generic_reloc
, /* special_function */
153 "R_ARM_ABS16", /* name */
154 FALSE
, /* partial_inplace */
155 0x0000ffff, /* src_mask */
156 0x0000ffff, /* dst_mask */
157 FALSE
), /* pcrel_offset */
159 /* 12 bit absolute */
160 HOWTO (R_ARM_ABS12
, /* type */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
164 FALSE
, /* pc_relative */
166 complain_overflow_bitfield
,/* complain_on_overflow */
167 bfd_elf_generic_reloc
, /* special_function */
168 "R_ARM_ABS12", /* name */
169 FALSE
, /* partial_inplace */
170 0x00000fff, /* src_mask */
171 0x00000fff, /* dst_mask */
172 FALSE
), /* pcrel_offset */
174 HOWTO (R_ARM_THM_ABS5
, /* type */
176 1, /* size (0 = byte, 1 = short, 2 = long) */
178 FALSE
, /* pc_relative */
180 complain_overflow_bitfield
,/* complain_on_overflow */
181 bfd_elf_generic_reloc
, /* special_function */
182 "R_ARM_THM_ABS5", /* name */
183 FALSE
, /* partial_inplace */
184 0x000007e0, /* src_mask */
185 0x000007e0, /* dst_mask */
186 FALSE
), /* pcrel_offset */
189 HOWTO (R_ARM_ABS8
, /* type */
191 0, /* size (0 = byte, 1 = short, 2 = long) */
193 FALSE
, /* pc_relative */
195 complain_overflow_bitfield
,/* complain_on_overflow */
196 bfd_elf_generic_reloc
, /* special_function */
197 "R_ARM_ABS8", /* name */
198 FALSE
, /* partial_inplace */
199 0x000000ff, /* src_mask */
200 0x000000ff, /* dst_mask */
201 FALSE
), /* pcrel_offset */
203 HOWTO (R_ARM_SBREL32
, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE
, /* pc_relative */
209 complain_overflow_dont
,/* complain_on_overflow */
210 bfd_elf_generic_reloc
, /* special_function */
211 "R_ARM_SBREL32", /* name */
212 FALSE
, /* partial_inplace */
213 0xffffffff, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE
), /* pcrel_offset */
217 HOWTO (R_ARM_THM_CALL
, /* type */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
221 TRUE
, /* pc_relative */
223 complain_overflow_signed
,/* complain_on_overflow */
224 bfd_elf_generic_reloc
, /* special_function */
225 "R_ARM_THM_CALL", /* name */
226 FALSE
, /* partial_inplace */
227 0x07ff07ff, /* src_mask */
228 0x07ff07ff, /* dst_mask */
229 TRUE
), /* pcrel_offset */
231 HOWTO (R_ARM_THM_PC8
, /* type */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
235 TRUE
, /* pc_relative */
237 complain_overflow_signed
,/* complain_on_overflow */
238 bfd_elf_generic_reloc
, /* special_function */
239 "R_ARM_THM_PC8", /* name */
240 FALSE
, /* partial_inplace */
241 0x000000ff, /* src_mask */
242 0x000000ff, /* dst_mask */
243 TRUE
), /* pcrel_offset */
245 HOWTO (R_ARM_BREL_ADJ
, /* type */
247 1, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE
, /* pc_relative */
251 complain_overflow_signed
,/* complain_on_overflow */
252 bfd_elf_generic_reloc
, /* special_function */
253 "R_ARM_BREL_ADJ", /* name */
254 FALSE
, /* partial_inplace */
255 0xffffffff, /* src_mask */
256 0xffffffff, /* dst_mask */
257 FALSE
), /* pcrel_offset */
259 HOWTO (R_ARM_SWI24
, /* type */
261 0, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE
, /* pc_relative */
265 complain_overflow_signed
,/* complain_on_overflow */
266 bfd_elf_generic_reloc
, /* special_function */
267 "R_ARM_SWI24", /* name */
268 FALSE
, /* partial_inplace */
269 0x00000000, /* src_mask */
270 0x00000000, /* dst_mask */
271 FALSE
), /* pcrel_offset */
273 HOWTO (R_ARM_THM_SWI8
, /* type */
275 0, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE
, /* pc_relative */
279 complain_overflow_signed
,/* complain_on_overflow */
280 bfd_elf_generic_reloc
, /* special_function */
281 "R_ARM_SWI8", /* name */
282 FALSE
, /* partial_inplace */
283 0x00000000, /* src_mask */
284 0x00000000, /* dst_mask */
285 FALSE
), /* pcrel_offset */
287 /* BLX instruction for the ARM. */
288 HOWTO (R_ARM_XPC25
, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 TRUE
, /* pc_relative */
294 complain_overflow_signed
,/* complain_on_overflow */
295 bfd_elf_generic_reloc
, /* special_function */
296 "R_ARM_XPC25", /* name */
297 FALSE
, /* partial_inplace */
298 0x00ffffff, /* src_mask */
299 0x00ffffff, /* dst_mask */
300 TRUE
), /* pcrel_offset */
302 /* BLX instruction for the Thumb. */
303 HOWTO (R_ARM_THM_XPC22
, /* type */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
307 TRUE
, /* pc_relative */
309 complain_overflow_signed
,/* complain_on_overflow */
310 bfd_elf_generic_reloc
, /* special_function */
311 "R_ARM_THM_XPC22", /* name */
312 FALSE
, /* partial_inplace */
313 0x07ff07ff, /* src_mask */
314 0x07ff07ff, /* dst_mask */
315 TRUE
), /* pcrel_offset */
317 /* Dynamic TLS relocations. */
319 HOWTO (R_ARM_TLS_DTPMOD32
, /* type */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
323 FALSE
, /* pc_relative */
325 complain_overflow_bitfield
,/* complain_on_overflow */
326 bfd_elf_generic_reloc
, /* special_function */
327 "R_ARM_TLS_DTPMOD32", /* name */
328 TRUE
, /* partial_inplace */
329 0xffffffff, /* src_mask */
330 0xffffffff, /* dst_mask */
331 FALSE
), /* pcrel_offset */
333 HOWTO (R_ARM_TLS_DTPOFF32
, /* type */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
337 FALSE
, /* pc_relative */
339 complain_overflow_bitfield
,/* complain_on_overflow */
340 bfd_elf_generic_reloc
, /* special_function */
341 "R_ARM_TLS_DTPOFF32", /* name */
342 TRUE
, /* partial_inplace */
343 0xffffffff, /* src_mask */
344 0xffffffff, /* dst_mask */
345 FALSE
), /* pcrel_offset */
347 HOWTO (R_ARM_TLS_TPOFF32
, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE
, /* pc_relative */
353 complain_overflow_bitfield
,/* complain_on_overflow */
354 bfd_elf_generic_reloc
, /* special_function */
355 "R_ARM_TLS_TPOFF32", /* name */
356 TRUE
, /* partial_inplace */
357 0xffffffff, /* src_mask */
358 0xffffffff, /* dst_mask */
359 FALSE
), /* pcrel_offset */
361 /* Relocs used in ARM Linux */
363 HOWTO (R_ARM_COPY
, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 FALSE
, /* pc_relative */
369 complain_overflow_bitfield
,/* complain_on_overflow */
370 bfd_elf_generic_reloc
, /* special_function */
371 "R_ARM_COPY", /* name */
372 TRUE
, /* partial_inplace */
373 0xffffffff, /* src_mask */
374 0xffffffff, /* dst_mask */
375 FALSE
), /* pcrel_offset */
377 HOWTO (R_ARM_GLOB_DAT
, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 FALSE
, /* pc_relative */
383 complain_overflow_bitfield
,/* complain_on_overflow */
384 bfd_elf_generic_reloc
, /* special_function */
385 "R_ARM_GLOB_DAT", /* name */
386 TRUE
, /* partial_inplace */
387 0xffffffff, /* src_mask */
388 0xffffffff, /* dst_mask */
389 FALSE
), /* pcrel_offset */
391 HOWTO (R_ARM_JUMP_SLOT
, /* type */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
395 FALSE
, /* pc_relative */
397 complain_overflow_bitfield
,/* complain_on_overflow */
398 bfd_elf_generic_reloc
, /* special_function */
399 "R_ARM_JUMP_SLOT", /* name */
400 TRUE
, /* partial_inplace */
401 0xffffffff, /* src_mask */
402 0xffffffff, /* dst_mask */
403 FALSE
), /* pcrel_offset */
405 HOWTO (R_ARM_RELATIVE
, /* type */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
409 FALSE
, /* pc_relative */
411 complain_overflow_bitfield
,/* complain_on_overflow */
412 bfd_elf_generic_reloc
, /* special_function */
413 "R_ARM_RELATIVE", /* name */
414 TRUE
, /* partial_inplace */
415 0xffffffff, /* src_mask */
416 0xffffffff, /* dst_mask */
417 FALSE
), /* pcrel_offset */
419 HOWTO (R_ARM_GOTOFF32
, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE
, /* pc_relative */
425 complain_overflow_bitfield
,/* complain_on_overflow */
426 bfd_elf_generic_reloc
, /* special_function */
427 "R_ARM_GOTOFF32", /* name */
428 TRUE
, /* partial_inplace */
429 0xffffffff, /* src_mask */
430 0xffffffff, /* dst_mask */
431 FALSE
), /* pcrel_offset */
433 HOWTO (R_ARM_GOTPC
, /* type */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
437 TRUE
, /* pc_relative */
439 complain_overflow_bitfield
,/* complain_on_overflow */
440 bfd_elf_generic_reloc
, /* special_function */
441 "R_ARM_GOTPC", /* name */
442 TRUE
, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE
), /* pcrel_offset */
447 HOWTO (R_ARM_GOT32
, /* type */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
451 FALSE
, /* pc_relative */
453 complain_overflow_bitfield
,/* complain_on_overflow */
454 bfd_elf_generic_reloc
, /* special_function */
455 "R_ARM_GOT32", /* name */
456 TRUE
, /* partial_inplace */
457 0xffffffff, /* src_mask */
458 0xffffffff, /* dst_mask */
459 FALSE
), /* pcrel_offset */
461 HOWTO (R_ARM_PLT32
, /* type */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
465 TRUE
, /* pc_relative */
467 complain_overflow_bitfield
,/* complain_on_overflow */
468 bfd_elf_generic_reloc
, /* special_function */
469 "R_ARM_PLT32", /* name */
470 FALSE
, /* partial_inplace */
471 0x00ffffff, /* src_mask */
472 0x00ffffff, /* dst_mask */
473 TRUE
), /* pcrel_offset */
475 HOWTO (R_ARM_CALL
, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 TRUE
, /* pc_relative */
481 complain_overflow_signed
,/* complain_on_overflow */
482 bfd_elf_generic_reloc
, /* special_function */
483 "R_ARM_CALL", /* name */
484 FALSE
, /* partial_inplace */
485 0x00ffffff, /* src_mask */
486 0x00ffffff, /* dst_mask */
487 TRUE
), /* pcrel_offset */
489 HOWTO (R_ARM_JUMP24
, /* type */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
493 TRUE
, /* pc_relative */
495 complain_overflow_signed
,/* complain_on_overflow */
496 bfd_elf_generic_reloc
, /* special_function */
497 "R_ARM_JUMP24", /* name */
498 FALSE
, /* partial_inplace */
499 0x00ffffff, /* src_mask */
500 0x00ffffff, /* dst_mask */
501 TRUE
), /* pcrel_offset */
503 HOWTO (R_ARM_THM_JUMP24
, /* type */
505 2, /* size (0 = byte, 1 = short, 2 = long) */
507 TRUE
, /* pc_relative */
509 complain_overflow_signed
,/* complain_on_overflow */
510 bfd_elf_generic_reloc
, /* special_function */
511 "R_ARM_THM_JUMP24", /* name */
512 FALSE
, /* partial_inplace */
513 0x07ff2fff, /* src_mask */
514 0x07ff2fff, /* dst_mask */
515 TRUE
), /* pcrel_offset */
517 HOWTO (R_ARM_BASE_ABS
, /* type */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
521 FALSE
, /* pc_relative */
523 complain_overflow_dont
,/* complain_on_overflow */
524 bfd_elf_generic_reloc
, /* special_function */
525 "R_ARM_BASE_ABS", /* name */
526 FALSE
, /* partial_inplace */
527 0xffffffff, /* src_mask */
528 0xffffffff, /* dst_mask */
529 FALSE
), /* pcrel_offset */
531 HOWTO (R_ARM_ALU_PCREL7_0
, /* type */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
535 TRUE
, /* pc_relative */
537 complain_overflow_dont
,/* complain_on_overflow */
538 bfd_elf_generic_reloc
, /* special_function */
539 "R_ARM_ALU_PCREL_7_0", /* name */
540 FALSE
, /* partial_inplace */
541 0x00000fff, /* src_mask */
542 0x00000fff, /* dst_mask */
543 TRUE
), /* pcrel_offset */
545 HOWTO (R_ARM_ALU_PCREL15_8
, /* type */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
549 TRUE
, /* pc_relative */
551 complain_overflow_dont
,/* complain_on_overflow */
552 bfd_elf_generic_reloc
, /* special_function */
553 "R_ARM_ALU_PCREL_15_8",/* name */
554 FALSE
, /* partial_inplace */
555 0x00000fff, /* src_mask */
556 0x00000fff, /* dst_mask */
557 TRUE
), /* pcrel_offset */
559 HOWTO (R_ARM_ALU_PCREL23_15
, /* type */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
563 TRUE
, /* pc_relative */
565 complain_overflow_dont
,/* complain_on_overflow */
566 bfd_elf_generic_reloc
, /* special_function */
567 "R_ARM_ALU_PCREL_23_15",/* name */
568 FALSE
, /* partial_inplace */
569 0x00000fff, /* src_mask */
570 0x00000fff, /* dst_mask */
571 TRUE
), /* pcrel_offset */
573 HOWTO (R_ARM_LDR_SBREL_11_0
, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE
, /* pc_relative */
579 complain_overflow_dont
,/* complain_on_overflow */
580 bfd_elf_generic_reloc
, /* special_function */
581 "R_ARM_LDR_SBREL_11_0",/* name */
582 FALSE
, /* partial_inplace */
583 0x00000fff, /* src_mask */
584 0x00000fff, /* dst_mask */
585 FALSE
), /* pcrel_offset */
587 HOWTO (R_ARM_ALU_SBREL_19_12
, /* type */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE
, /* pc_relative */
593 complain_overflow_dont
,/* complain_on_overflow */
594 bfd_elf_generic_reloc
, /* special_function */
595 "R_ARM_ALU_SBREL_19_12",/* name */
596 FALSE
, /* partial_inplace */
597 0x000ff000, /* src_mask */
598 0x000ff000, /* dst_mask */
599 FALSE
), /* pcrel_offset */
601 HOWTO (R_ARM_ALU_SBREL_27_20
, /* type */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
605 FALSE
, /* pc_relative */
607 complain_overflow_dont
,/* complain_on_overflow */
608 bfd_elf_generic_reloc
, /* special_function */
609 "R_ARM_ALU_SBREL_27_20",/* name */
610 FALSE
, /* partial_inplace */
611 0x0ff00000, /* src_mask */
612 0x0ff00000, /* dst_mask */
613 FALSE
), /* pcrel_offset */
615 HOWTO (R_ARM_TARGET1
, /* type */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
619 FALSE
, /* pc_relative */
621 complain_overflow_dont
,/* complain_on_overflow */
622 bfd_elf_generic_reloc
, /* special_function */
623 "R_ARM_TARGET1", /* name */
624 FALSE
, /* partial_inplace */
625 0xffffffff, /* src_mask */
626 0xffffffff, /* dst_mask */
627 FALSE
), /* pcrel_offset */
629 HOWTO (R_ARM_ROSEGREL32
, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE
, /* pc_relative */
635 complain_overflow_dont
,/* complain_on_overflow */
636 bfd_elf_generic_reloc
, /* special_function */
637 "R_ARM_ROSEGREL32", /* name */
638 FALSE
, /* partial_inplace */
639 0xffffffff, /* src_mask */
640 0xffffffff, /* dst_mask */
641 FALSE
), /* pcrel_offset */
643 HOWTO (R_ARM_V4BX
, /* type */
645 2, /* size (0 = byte, 1 = short, 2 = long) */
647 FALSE
, /* pc_relative */
649 complain_overflow_dont
,/* complain_on_overflow */
650 bfd_elf_generic_reloc
, /* special_function */
651 "R_ARM_V4BX", /* name */
652 FALSE
, /* partial_inplace */
653 0xffffffff, /* src_mask */
654 0xffffffff, /* dst_mask */
655 FALSE
), /* pcrel_offset */
657 HOWTO (R_ARM_TARGET2
, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE
, /* pc_relative */
663 complain_overflow_signed
,/* complain_on_overflow */
664 bfd_elf_generic_reloc
, /* special_function */
665 "R_ARM_TARGET2", /* name */
666 FALSE
, /* partial_inplace */
667 0xffffffff, /* src_mask */
668 0xffffffff, /* dst_mask */
669 TRUE
), /* pcrel_offset */
671 HOWTO (R_ARM_PREL31
, /* type */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
675 TRUE
, /* pc_relative */
677 complain_overflow_signed
,/* complain_on_overflow */
678 bfd_elf_generic_reloc
, /* special_function */
679 "R_ARM_PREL31", /* name */
680 FALSE
, /* partial_inplace */
681 0x7fffffff, /* src_mask */
682 0x7fffffff, /* dst_mask */
683 TRUE
), /* pcrel_offset */
685 HOWTO (R_ARM_MOVW_ABS_NC
, /* type */
687 2, /* size (0 = byte, 1 = short, 2 = long) */
689 FALSE
, /* pc_relative */
691 complain_overflow_dont
,/* complain_on_overflow */
692 bfd_elf_generic_reloc
, /* special_function */
693 "R_ARM_MOVW_ABS_NC", /* name */
694 FALSE
, /* partial_inplace */
695 0x000f0fff, /* src_mask */
696 0x000f0fff, /* dst_mask */
697 FALSE
), /* pcrel_offset */
699 HOWTO (R_ARM_MOVT_ABS
, /* type */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_bitfield
,/* complain_on_overflow */
706 bfd_elf_generic_reloc
, /* special_function */
707 "R_ARM_MOVT_ABS", /* name */
708 FALSE
, /* partial_inplace */
709 0x000f0fff, /* src_mask */
710 0x000f0fff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 HOWTO (R_ARM_MOVW_PREL_NC
, /* type */
715 2, /* size (0 = byte, 1 = short, 2 = long) */
717 TRUE
, /* pc_relative */
719 complain_overflow_dont
,/* complain_on_overflow */
720 bfd_elf_generic_reloc
, /* special_function */
721 "R_ARM_MOVW_PREL_NC", /* name */
722 FALSE
, /* partial_inplace */
723 0x000f0fff, /* src_mask */
724 0x000f0fff, /* dst_mask */
725 TRUE
), /* pcrel_offset */
727 HOWTO (R_ARM_MOVT_PREL
, /* type */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
731 TRUE
, /* pc_relative */
733 complain_overflow_bitfield
,/* complain_on_overflow */
734 bfd_elf_generic_reloc
, /* special_function */
735 "R_ARM_MOVT_PREL", /* name */
736 FALSE
, /* partial_inplace */
737 0x000f0fff, /* src_mask */
738 0x000f0fff, /* dst_mask */
739 TRUE
), /* pcrel_offset */
741 HOWTO (R_ARM_THM_MOVW_ABS_NC
, /* type */
743 2, /* size (0 = byte, 1 = short, 2 = long) */
745 FALSE
, /* pc_relative */
747 complain_overflow_dont
,/* complain_on_overflow */
748 bfd_elf_generic_reloc
, /* special_function */
749 "R_ARM_THM_MOVW_ABS_NC",/* name */
750 FALSE
, /* partial_inplace */
751 0x040f70ff, /* src_mask */
752 0x040f70ff, /* dst_mask */
753 FALSE
), /* pcrel_offset */
755 HOWTO (R_ARM_THM_MOVT_ABS
, /* type */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
759 FALSE
, /* pc_relative */
761 complain_overflow_bitfield
,/* complain_on_overflow */
762 bfd_elf_generic_reloc
, /* special_function */
763 "R_ARM_THM_MOVT_ABS", /* name */
764 FALSE
, /* partial_inplace */
765 0x040f70ff, /* src_mask */
766 0x040f70ff, /* dst_mask */
767 FALSE
), /* pcrel_offset */
769 HOWTO (R_ARM_THM_MOVW_PREL_NC
,/* type */
771 2, /* size (0 = byte, 1 = short, 2 = long) */
773 TRUE
, /* pc_relative */
775 complain_overflow_dont
,/* complain_on_overflow */
776 bfd_elf_generic_reloc
, /* special_function */
777 "R_ARM_THM_MOVW_PREL_NC",/* name */
778 FALSE
, /* partial_inplace */
779 0x040f70ff, /* src_mask */
780 0x040f70ff, /* dst_mask */
781 TRUE
), /* pcrel_offset */
783 HOWTO (R_ARM_THM_MOVT_PREL
, /* type */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
787 TRUE
, /* pc_relative */
789 complain_overflow_bitfield
,/* complain_on_overflow */
790 bfd_elf_generic_reloc
, /* special_function */
791 "R_ARM_THM_MOVT_PREL", /* name */
792 FALSE
, /* partial_inplace */
793 0x040f70ff, /* src_mask */
794 0x040f70ff, /* dst_mask */
795 TRUE
), /* pcrel_offset */
797 HOWTO (R_ARM_THM_JUMP19
, /* type */
799 2, /* size (0 = byte, 1 = short, 2 = long) */
801 TRUE
, /* pc_relative */
803 complain_overflow_signed
,/* complain_on_overflow */
804 bfd_elf_generic_reloc
, /* special_function */
805 "R_ARM_THM_JUMP19", /* name */
806 FALSE
, /* partial_inplace */
807 0x043f2fff, /* src_mask */
808 0x043f2fff, /* dst_mask */
809 TRUE
), /* pcrel_offset */
811 HOWTO (R_ARM_THM_JUMP6
, /* type */
813 1, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE
, /* pc_relative */
817 complain_overflow_unsigned
,/* complain_on_overflow */
818 bfd_elf_generic_reloc
, /* special_function */
819 "R_ARM_THM_JUMP6", /* name */
820 FALSE
, /* partial_inplace */
821 0x02f8, /* src_mask */
822 0x02f8, /* dst_mask */
823 TRUE
), /* pcrel_offset */
825 /* These are declared as 13-bit signed relocations because we can
826 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
828 HOWTO (R_ARM_THM_ALU_PREL_11_0
,/* type */
830 2, /* size (0 = byte, 1 = short, 2 = long) */
832 TRUE
, /* pc_relative */
834 complain_overflow_dont
,/* complain_on_overflow */
835 bfd_elf_generic_reloc
, /* special_function */
836 "R_ARM_THM_ALU_PREL_11_0",/* name */
837 FALSE
, /* partial_inplace */
838 0xffffffff, /* src_mask */
839 0xffffffff, /* dst_mask */
840 TRUE
), /* pcrel_offset */
842 HOWTO (R_ARM_THM_PC12
, /* type */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
846 TRUE
, /* pc_relative */
848 complain_overflow_dont
,/* complain_on_overflow */
849 bfd_elf_generic_reloc
, /* special_function */
850 "R_ARM_THM_PC12", /* name */
851 FALSE
, /* partial_inplace */
852 0xffffffff, /* src_mask */
853 0xffffffff, /* dst_mask */
854 TRUE
), /* pcrel_offset */
856 HOWTO (R_ARM_ABS32_NOI
, /* type */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE
, /* pc_relative */
862 complain_overflow_dont
,/* complain_on_overflow */
863 bfd_elf_generic_reloc
, /* special_function */
864 "R_ARM_ABS32_NOI", /* name */
865 FALSE
, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 FALSE
), /* pcrel_offset */
870 HOWTO (R_ARM_REL32_NOI
, /* type */
872 2, /* size (0 = byte, 1 = short, 2 = long) */
874 TRUE
, /* pc_relative */
876 complain_overflow_dont
,/* complain_on_overflow */
877 bfd_elf_generic_reloc
, /* special_function */
878 "R_ARM_REL32_NOI", /* name */
879 FALSE
, /* partial_inplace */
880 0xffffffff, /* src_mask */
881 0xffffffff, /* dst_mask */
882 FALSE
), /* pcrel_offset */
884 /* Group relocations. */
886 HOWTO (R_ARM_ALU_PC_G0_NC
, /* type */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
890 TRUE
, /* pc_relative */
892 complain_overflow_dont
,/* complain_on_overflow */
893 bfd_elf_generic_reloc
, /* special_function */
894 "R_ARM_ALU_PC_G0_NC", /* name */
895 FALSE
, /* partial_inplace */
896 0xffffffff, /* src_mask */
897 0xffffffff, /* dst_mask */
898 TRUE
), /* pcrel_offset */
900 HOWTO (R_ARM_ALU_PC_G0
, /* type */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
904 TRUE
, /* pc_relative */
906 complain_overflow_dont
,/* complain_on_overflow */
907 bfd_elf_generic_reloc
, /* special_function */
908 "R_ARM_ALU_PC_G0", /* name */
909 FALSE
, /* partial_inplace */
910 0xffffffff, /* src_mask */
911 0xffffffff, /* dst_mask */
912 TRUE
), /* pcrel_offset */
914 HOWTO (R_ARM_ALU_PC_G1_NC
, /* type */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
918 TRUE
, /* pc_relative */
920 complain_overflow_dont
,/* complain_on_overflow */
921 bfd_elf_generic_reloc
, /* special_function */
922 "R_ARM_ALU_PC_G1_NC", /* name */
923 FALSE
, /* partial_inplace */
924 0xffffffff, /* src_mask */
925 0xffffffff, /* dst_mask */
926 TRUE
), /* pcrel_offset */
928 HOWTO (R_ARM_ALU_PC_G1
, /* type */
930 2, /* size (0 = byte, 1 = short, 2 = long) */
932 TRUE
, /* pc_relative */
934 complain_overflow_dont
,/* complain_on_overflow */
935 bfd_elf_generic_reloc
, /* special_function */
936 "R_ARM_ALU_PC_G1", /* name */
937 FALSE
, /* partial_inplace */
938 0xffffffff, /* src_mask */
939 0xffffffff, /* dst_mask */
940 TRUE
), /* pcrel_offset */
942 HOWTO (R_ARM_ALU_PC_G2
, /* type */
944 2, /* size (0 = byte, 1 = short, 2 = long) */
946 TRUE
, /* pc_relative */
948 complain_overflow_dont
,/* complain_on_overflow */
949 bfd_elf_generic_reloc
, /* special_function */
950 "R_ARM_ALU_PC_G2", /* name */
951 FALSE
, /* partial_inplace */
952 0xffffffff, /* src_mask */
953 0xffffffff, /* dst_mask */
954 TRUE
), /* pcrel_offset */
956 HOWTO (R_ARM_LDR_PC_G1
, /* type */
958 2, /* size (0 = byte, 1 = short, 2 = long) */
960 TRUE
, /* pc_relative */
962 complain_overflow_dont
,/* complain_on_overflow */
963 bfd_elf_generic_reloc
, /* special_function */
964 "R_ARM_LDR_PC_G1", /* name */
965 FALSE
, /* partial_inplace */
966 0xffffffff, /* src_mask */
967 0xffffffff, /* dst_mask */
968 TRUE
), /* pcrel_offset */
970 HOWTO (R_ARM_LDR_PC_G2
, /* type */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
974 TRUE
, /* pc_relative */
976 complain_overflow_dont
,/* complain_on_overflow */
977 bfd_elf_generic_reloc
, /* special_function */
978 "R_ARM_LDR_PC_G2", /* name */
979 FALSE
, /* partial_inplace */
980 0xffffffff, /* src_mask */
981 0xffffffff, /* dst_mask */
982 TRUE
), /* pcrel_offset */
984 HOWTO (R_ARM_LDRS_PC_G0
, /* type */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
988 TRUE
, /* pc_relative */
990 complain_overflow_dont
,/* complain_on_overflow */
991 bfd_elf_generic_reloc
, /* special_function */
992 "R_ARM_LDRS_PC_G0", /* name */
993 FALSE
, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 TRUE
), /* pcrel_offset */
998 HOWTO (R_ARM_LDRS_PC_G1
, /* type */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1002 TRUE
, /* pc_relative */
1004 complain_overflow_dont
,/* complain_on_overflow */
1005 bfd_elf_generic_reloc
, /* special_function */
1006 "R_ARM_LDRS_PC_G1", /* name */
1007 FALSE
, /* partial_inplace */
1008 0xffffffff, /* src_mask */
1009 0xffffffff, /* dst_mask */
1010 TRUE
), /* pcrel_offset */
1012 HOWTO (R_ARM_LDRS_PC_G2
, /* type */
1014 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 TRUE
, /* pc_relative */
1018 complain_overflow_dont
,/* complain_on_overflow */
1019 bfd_elf_generic_reloc
, /* special_function */
1020 "R_ARM_LDRS_PC_G2", /* name */
1021 FALSE
, /* partial_inplace */
1022 0xffffffff, /* src_mask */
1023 0xffffffff, /* dst_mask */
1024 TRUE
), /* pcrel_offset */
1026 HOWTO (R_ARM_LDC_PC_G0
, /* type */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1030 TRUE
, /* pc_relative */
1032 complain_overflow_dont
,/* complain_on_overflow */
1033 bfd_elf_generic_reloc
, /* special_function */
1034 "R_ARM_LDC_PC_G0", /* name */
1035 FALSE
, /* partial_inplace */
1036 0xffffffff, /* src_mask */
1037 0xffffffff, /* dst_mask */
1038 TRUE
), /* pcrel_offset */
1040 HOWTO (R_ARM_LDC_PC_G1
, /* type */
1042 2, /* size (0 = byte, 1 = short, 2 = long) */
1044 TRUE
, /* pc_relative */
1046 complain_overflow_dont
,/* complain_on_overflow */
1047 bfd_elf_generic_reloc
, /* special_function */
1048 "R_ARM_LDC_PC_G1", /* name */
1049 FALSE
, /* partial_inplace */
1050 0xffffffff, /* src_mask */
1051 0xffffffff, /* dst_mask */
1052 TRUE
), /* pcrel_offset */
1054 HOWTO (R_ARM_LDC_PC_G2
, /* type */
1056 2, /* size (0 = byte, 1 = short, 2 = long) */
1058 TRUE
, /* pc_relative */
1060 complain_overflow_dont
,/* complain_on_overflow */
1061 bfd_elf_generic_reloc
, /* special_function */
1062 "R_ARM_LDC_PC_G2", /* name */
1063 FALSE
, /* partial_inplace */
1064 0xffffffff, /* src_mask */
1065 0xffffffff, /* dst_mask */
1066 TRUE
), /* pcrel_offset */
1068 HOWTO (R_ARM_ALU_SB_G0_NC
, /* type */
1070 2, /* size (0 = byte, 1 = short, 2 = long) */
1072 TRUE
, /* pc_relative */
1074 complain_overflow_dont
,/* complain_on_overflow */
1075 bfd_elf_generic_reloc
, /* special_function */
1076 "R_ARM_ALU_SB_G0_NC", /* name */
1077 FALSE
, /* partial_inplace */
1078 0xffffffff, /* src_mask */
1079 0xffffffff, /* dst_mask */
1080 TRUE
), /* pcrel_offset */
1082 HOWTO (R_ARM_ALU_SB_G0
, /* type */
1084 2, /* size (0 = byte, 1 = short, 2 = long) */
1086 TRUE
, /* pc_relative */
1088 complain_overflow_dont
,/* complain_on_overflow */
1089 bfd_elf_generic_reloc
, /* special_function */
1090 "R_ARM_ALU_SB_G0", /* name */
1091 FALSE
, /* partial_inplace */
1092 0xffffffff, /* src_mask */
1093 0xffffffff, /* dst_mask */
1094 TRUE
), /* pcrel_offset */
1096 HOWTO (R_ARM_ALU_SB_G1_NC
, /* type */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1100 TRUE
, /* pc_relative */
1102 complain_overflow_dont
,/* complain_on_overflow */
1103 bfd_elf_generic_reloc
, /* special_function */
1104 "R_ARM_ALU_SB_G1_NC", /* name */
1105 FALSE
, /* partial_inplace */
1106 0xffffffff, /* src_mask */
1107 0xffffffff, /* dst_mask */
1108 TRUE
), /* pcrel_offset */
1110 HOWTO (R_ARM_ALU_SB_G1
, /* type */
1112 2, /* size (0 = byte, 1 = short, 2 = long) */
1114 TRUE
, /* pc_relative */
1116 complain_overflow_dont
,/* complain_on_overflow */
1117 bfd_elf_generic_reloc
, /* special_function */
1118 "R_ARM_ALU_SB_G1", /* name */
1119 FALSE
, /* partial_inplace */
1120 0xffffffff, /* src_mask */
1121 0xffffffff, /* dst_mask */
1122 TRUE
), /* pcrel_offset */
1124 HOWTO (R_ARM_ALU_SB_G2
, /* type */
1126 2, /* size (0 = byte, 1 = short, 2 = long) */
1128 TRUE
, /* pc_relative */
1130 complain_overflow_dont
,/* complain_on_overflow */
1131 bfd_elf_generic_reloc
, /* special_function */
1132 "R_ARM_ALU_SB_G2", /* name */
1133 FALSE
, /* partial_inplace */
1134 0xffffffff, /* src_mask */
1135 0xffffffff, /* dst_mask */
1136 TRUE
), /* pcrel_offset */
1138 HOWTO (R_ARM_LDR_SB_G0
, /* type */
1140 2, /* size (0 = byte, 1 = short, 2 = long) */
1142 TRUE
, /* pc_relative */
1144 complain_overflow_dont
,/* complain_on_overflow */
1145 bfd_elf_generic_reloc
, /* special_function */
1146 "R_ARM_LDR_SB_G0", /* name */
1147 FALSE
, /* partial_inplace */
1148 0xffffffff, /* src_mask */
1149 0xffffffff, /* dst_mask */
1150 TRUE
), /* pcrel_offset */
1152 HOWTO (R_ARM_LDR_SB_G1
, /* type */
1154 2, /* size (0 = byte, 1 = short, 2 = long) */
1156 TRUE
, /* pc_relative */
1158 complain_overflow_dont
,/* complain_on_overflow */
1159 bfd_elf_generic_reloc
, /* special_function */
1160 "R_ARM_LDR_SB_G1", /* name */
1161 FALSE
, /* partial_inplace */
1162 0xffffffff, /* src_mask */
1163 0xffffffff, /* dst_mask */
1164 TRUE
), /* pcrel_offset */
1166 HOWTO (R_ARM_LDR_SB_G2
, /* type */
1168 2, /* size (0 = byte, 1 = short, 2 = long) */
1170 TRUE
, /* pc_relative */
1172 complain_overflow_dont
,/* complain_on_overflow */
1173 bfd_elf_generic_reloc
, /* special_function */
1174 "R_ARM_LDR_SB_G2", /* name */
1175 FALSE
, /* partial_inplace */
1176 0xffffffff, /* src_mask */
1177 0xffffffff, /* dst_mask */
1178 TRUE
), /* pcrel_offset */
1180 HOWTO (R_ARM_LDRS_SB_G0
, /* type */
1182 2, /* size (0 = byte, 1 = short, 2 = long) */
1184 TRUE
, /* pc_relative */
1186 complain_overflow_dont
,/* complain_on_overflow */
1187 bfd_elf_generic_reloc
, /* special_function */
1188 "R_ARM_LDRS_SB_G0", /* name */
1189 FALSE
, /* partial_inplace */
1190 0xffffffff, /* src_mask */
1191 0xffffffff, /* dst_mask */
1192 TRUE
), /* pcrel_offset */
1194 HOWTO (R_ARM_LDRS_SB_G1
, /* type */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1198 TRUE
, /* pc_relative */
1200 complain_overflow_dont
,/* complain_on_overflow */
1201 bfd_elf_generic_reloc
, /* special_function */
1202 "R_ARM_LDRS_SB_G1", /* name */
1203 FALSE
, /* partial_inplace */
1204 0xffffffff, /* src_mask */
1205 0xffffffff, /* dst_mask */
1206 TRUE
), /* pcrel_offset */
1208 HOWTO (R_ARM_LDRS_SB_G2
, /* type */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1212 TRUE
, /* pc_relative */
1214 complain_overflow_dont
,/* complain_on_overflow */
1215 bfd_elf_generic_reloc
, /* special_function */
1216 "R_ARM_LDRS_SB_G2", /* name */
1217 FALSE
, /* partial_inplace */
1218 0xffffffff, /* src_mask */
1219 0xffffffff, /* dst_mask */
1220 TRUE
), /* pcrel_offset */
1222 HOWTO (R_ARM_LDC_SB_G0
, /* type */
1224 2, /* size (0 = byte, 1 = short, 2 = long) */
1226 TRUE
, /* pc_relative */
1228 complain_overflow_dont
,/* complain_on_overflow */
1229 bfd_elf_generic_reloc
, /* special_function */
1230 "R_ARM_LDC_SB_G0", /* name */
1231 FALSE
, /* partial_inplace */
1232 0xffffffff, /* src_mask */
1233 0xffffffff, /* dst_mask */
1234 TRUE
), /* pcrel_offset */
1236 HOWTO (R_ARM_LDC_SB_G1
, /* type */
1238 2, /* size (0 = byte, 1 = short, 2 = long) */
1240 TRUE
, /* pc_relative */
1242 complain_overflow_dont
,/* complain_on_overflow */
1243 bfd_elf_generic_reloc
, /* special_function */
1244 "R_ARM_LDC_SB_G1", /* name */
1245 FALSE
, /* partial_inplace */
1246 0xffffffff, /* src_mask */
1247 0xffffffff, /* dst_mask */
1248 TRUE
), /* pcrel_offset */
1250 HOWTO (R_ARM_LDC_SB_G2
, /* type */
1252 2, /* size (0 = byte, 1 = short, 2 = long) */
1254 TRUE
, /* pc_relative */
1256 complain_overflow_dont
,/* complain_on_overflow */
1257 bfd_elf_generic_reloc
, /* special_function */
1258 "R_ARM_LDC_SB_G2", /* name */
1259 FALSE
, /* partial_inplace */
1260 0xffffffff, /* src_mask */
1261 0xffffffff, /* dst_mask */
1262 TRUE
), /* pcrel_offset */
1264 /* End of group relocations. */
1266 HOWTO (R_ARM_MOVW_BREL_NC
, /* type */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE
, /* pc_relative */
1272 complain_overflow_dont
,/* complain_on_overflow */
1273 bfd_elf_generic_reloc
, /* special_function */
1274 "R_ARM_MOVW_BREL_NC", /* name */
1275 FALSE
, /* partial_inplace */
1276 0x0000ffff, /* src_mask */
1277 0x0000ffff, /* dst_mask */
1278 FALSE
), /* pcrel_offset */
1280 HOWTO (R_ARM_MOVT_BREL
, /* type */
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE
, /* pc_relative */
1286 complain_overflow_bitfield
,/* complain_on_overflow */
1287 bfd_elf_generic_reloc
, /* special_function */
1288 "R_ARM_MOVT_BREL", /* name */
1289 FALSE
, /* partial_inplace */
1290 0x0000ffff, /* src_mask */
1291 0x0000ffff, /* dst_mask */
1292 FALSE
), /* pcrel_offset */
1294 HOWTO (R_ARM_MOVW_BREL
, /* type */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE
, /* pc_relative */
1300 complain_overflow_dont
,/* complain_on_overflow */
1301 bfd_elf_generic_reloc
, /* special_function */
1302 "R_ARM_MOVW_BREL", /* name */
1303 FALSE
, /* partial_inplace */
1304 0x0000ffff, /* src_mask */
1305 0x0000ffff, /* dst_mask */
1306 FALSE
), /* pcrel_offset */
1308 HOWTO (R_ARM_THM_MOVW_BREL_NC
,/* type */
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE
, /* pc_relative */
1314 complain_overflow_dont
,/* complain_on_overflow */
1315 bfd_elf_generic_reloc
, /* special_function */
1316 "R_ARM_THM_MOVW_BREL_NC",/* name */
1317 FALSE
, /* partial_inplace */
1318 0x040f70ff, /* src_mask */
1319 0x040f70ff, /* dst_mask */
1320 FALSE
), /* pcrel_offset */
1322 HOWTO (R_ARM_THM_MOVT_BREL
, /* type */
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE
, /* pc_relative */
1328 complain_overflow_bitfield
,/* complain_on_overflow */
1329 bfd_elf_generic_reloc
, /* special_function */
1330 "R_ARM_THM_MOVT_BREL", /* name */
1331 FALSE
, /* partial_inplace */
1332 0x040f70ff, /* src_mask */
1333 0x040f70ff, /* dst_mask */
1334 FALSE
), /* pcrel_offset */
1336 HOWTO (R_ARM_THM_MOVW_BREL
, /* type */
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE
, /* pc_relative */
1342 complain_overflow_dont
,/* complain_on_overflow */
1343 bfd_elf_generic_reloc
, /* special_function */
1344 "R_ARM_THM_MOVW_BREL", /* name */
1345 FALSE
, /* partial_inplace */
1346 0x040f70ff, /* src_mask */
1347 0x040f70ff, /* dst_mask */
1348 FALSE
), /* pcrel_offset */
1350 EMPTY_HOWTO (90), /* unallocated */
1355 HOWTO (R_ARM_PLT32_ABS
, /* type */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1359 FALSE
, /* pc_relative */
1361 complain_overflow_dont
,/* complain_on_overflow */
1362 bfd_elf_generic_reloc
, /* special_function */
1363 "R_ARM_PLT32_ABS", /* name */
1364 FALSE
, /* partial_inplace */
1365 0xffffffff, /* src_mask */
1366 0xffffffff, /* dst_mask */
1367 FALSE
), /* pcrel_offset */
1369 HOWTO (R_ARM_GOT_ABS
, /* type */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_dont
,/* complain_on_overflow */
1376 bfd_elf_generic_reloc
, /* special_function */
1377 "R_ARM_GOT_ABS", /* name */
1378 FALSE
, /* partial_inplace */
1379 0xffffffff, /* src_mask */
1380 0xffffffff, /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 HOWTO (R_ARM_GOT_PREL
, /* type */
1385 2, /* size (0 = byte, 1 = short, 2 = long) */
1387 TRUE
, /* pc_relative */
1389 complain_overflow_dont
, /* complain_on_overflow */
1390 bfd_elf_generic_reloc
, /* special_function */
1391 "R_ARM_GOT_PREL", /* name */
1392 FALSE
, /* partial_inplace */
1393 0xffffffff, /* src_mask */
1394 0xffffffff, /* dst_mask */
1395 TRUE
), /* pcrel_offset */
1397 HOWTO (R_ARM_GOT_BREL12
, /* type */
1399 2, /* size (0 = byte, 1 = short, 2 = long) */
1401 FALSE
, /* pc_relative */
1403 complain_overflow_bitfield
,/* complain_on_overflow */
1404 bfd_elf_generic_reloc
, /* special_function */
1405 "R_ARM_GOT_BREL12", /* name */
1406 FALSE
, /* partial_inplace */
1407 0x00000fff, /* src_mask */
1408 0x00000fff, /* dst_mask */
1409 FALSE
), /* pcrel_offset */
1411 HOWTO (R_ARM_GOTOFF12
, /* type */
1413 2, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE
, /* pc_relative */
1417 complain_overflow_bitfield
,/* complain_on_overflow */
1418 bfd_elf_generic_reloc
, /* special_function */
1419 "R_ARM_GOTOFF12", /* name */
1420 FALSE
, /* partial_inplace */
1421 0x00000fff, /* src_mask */
1422 0x00000fff, /* dst_mask */
1423 FALSE
), /* pcrel_offset */
1425 EMPTY_HOWTO (R_ARM_GOTRELAX
), /* reserved for future GOT-load optimizations */
1427 /* GNU extension to record C++ vtable member usage */
1428 HOWTO (R_ARM_GNU_VTENTRY
, /* type */
1430 2, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE
, /* pc_relative */
1434 complain_overflow_dont
, /* complain_on_overflow */
1435 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
1436 "R_ARM_GNU_VTENTRY", /* name */
1437 FALSE
, /* partial_inplace */
1440 FALSE
), /* pcrel_offset */
1442 /* GNU extension to record C++ vtable hierarchy */
1443 HOWTO (R_ARM_GNU_VTINHERIT
, /* type */
1445 2, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE
, /* pc_relative */
1449 complain_overflow_dont
, /* complain_on_overflow */
1450 NULL
, /* special_function */
1451 "R_ARM_GNU_VTINHERIT", /* name */
1452 FALSE
, /* partial_inplace */
1455 FALSE
), /* pcrel_offset */
1457 HOWTO (R_ARM_THM_JUMP11
, /* type */
1459 1, /* size (0 = byte, 1 = short, 2 = long) */
1461 TRUE
, /* pc_relative */
1463 complain_overflow_signed
, /* complain_on_overflow */
1464 bfd_elf_generic_reloc
, /* special_function */
1465 "R_ARM_THM_JUMP11", /* name */
1466 FALSE
, /* partial_inplace */
1467 0x000007ff, /* src_mask */
1468 0x000007ff, /* dst_mask */
1469 TRUE
), /* pcrel_offset */
1471 HOWTO (R_ARM_THM_JUMP8
, /* type */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1475 TRUE
, /* pc_relative */
1477 complain_overflow_signed
, /* complain_on_overflow */
1478 bfd_elf_generic_reloc
, /* special_function */
1479 "R_ARM_THM_JUMP8", /* name */
1480 FALSE
, /* partial_inplace */
1481 0x000000ff, /* src_mask */
1482 0x000000ff, /* dst_mask */
1483 TRUE
), /* pcrel_offset */
1485 /* TLS relocations */
1486 HOWTO (R_ARM_TLS_GD32
, /* type */
1488 2, /* size (0 = byte, 1 = short, 2 = long) */
1490 FALSE
, /* pc_relative */
1492 complain_overflow_bitfield
,/* complain_on_overflow */
1493 NULL
, /* special_function */
1494 "R_ARM_TLS_GD32", /* name */
1495 TRUE
, /* partial_inplace */
1496 0xffffffff, /* src_mask */
1497 0xffffffff, /* dst_mask */
1498 FALSE
), /* pcrel_offset */
1500 HOWTO (R_ARM_TLS_LDM32
, /* type */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE
, /* pc_relative */
1506 complain_overflow_bitfield
,/* complain_on_overflow */
1507 bfd_elf_generic_reloc
, /* special_function */
1508 "R_ARM_TLS_LDM32", /* name */
1509 TRUE
, /* partial_inplace */
1510 0xffffffff, /* src_mask */
1511 0xffffffff, /* dst_mask */
1512 FALSE
), /* pcrel_offset */
1514 HOWTO (R_ARM_TLS_LDO32
, /* type */
1516 2, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE
, /* pc_relative */
1520 complain_overflow_bitfield
,/* complain_on_overflow */
1521 bfd_elf_generic_reloc
, /* special_function */
1522 "R_ARM_TLS_LDO32", /* name */
1523 TRUE
, /* partial_inplace */
1524 0xffffffff, /* src_mask */
1525 0xffffffff, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 HOWTO (R_ARM_TLS_IE32
, /* type */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1532 FALSE
, /* pc_relative */
1534 complain_overflow_bitfield
,/* complain_on_overflow */
1535 NULL
, /* special_function */
1536 "R_ARM_TLS_IE32", /* name */
1537 TRUE
, /* partial_inplace */
1538 0xffffffff, /* src_mask */
1539 0xffffffff, /* dst_mask */
1540 FALSE
), /* pcrel_offset */
1542 HOWTO (R_ARM_TLS_LE32
, /* type */
1544 2, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE
, /* pc_relative */
1548 complain_overflow_bitfield
,/* complain_on_overflow */
1549 bfd_elf_generic_reloc
, /* special_function */
1550 "R_ARM_TLS_LE32", /* name */
1551 TRUE
, /* partial_inplace */
1552 0xffffffff, /* src_mask */
1553 0xffffffff, /* dst_mask */
1554 FALSE
), /* pcrel_offset */
1556 HOWTO (R_ARM_TLS_LDO12
, /* type */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1560 FALSE
, /* pc_relative */
1562 complain_overflow_bitfield
,/* complain_on_overflow */
1563 bfd_elf_generic_reloc
, /* special_function */
1564 "R_ARM_TLS_LDO12", /* name */
1565 FALSE
, /* partial_inplace */
1566 0x00000fff, /* src_mask */
1567 0x00000fff, /* dst_mask */
1568 FALSE
), /* pcrel_offset */
1570 HOWTO (R_ARM_TLS_LE12
, /* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE
, /* pc_relative */
1576 complain_overflow_bitfield
,/* complain_on_overflow */
1577 bfd_elf_generic_reloc
, /* special_function */
1578 "R_ARM_TLS_LE12", /* name */
1579 FALSE
, /* partial_inplace */
1580 0x00000fff, /* src_mask */
1581 0x00000fff, /* dst_mask */
1582 FALSE
), /* pcrel_offset */
1584 HOWTO (R_ARM_TLS_IE12GP
, /* type */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE
, /* pc_relative */
1590 complain_overflow_bitfield
,/* complain_on_overflow */
1591 bfd_elf_generic_reloc
, /* special_function */
1592 "R_ARM_TLS_IE12GP", /* name */
1593 FALSE
, /* partial_inplace */
1594 0x00000fff, /* src_mask */
1595 0x00000fff, /* dst_mask */
1596 FALSE
), /* pcrel_offset */
1599 /* 112-127 private relocations
1600 128 R_ARM_ME_TOO, obsolete
1601 129-255 unallocated in AAELF.
1603 249-255 extended, currently unused, relocations: */
1605 static reloc_howto_type elf32_arm_howto_table_2
[4] =
1607 HOWTO (R_ARM_RREL32
, /* type */
1609 0, /* size (0 = byte, 1 = short, 2 = long) */
1611 FALSE
, /* pc_relative */
1613 complain_overflow_dont
,/* complain_on_overflow */
1614 bfd_elf_generic_reloc
, /* special_function */
1615 "R_ARM_RREL32", /* name */
1616 FALSE
, /* partial_inplace */
1619 FALSE
), /* pcrel_offset */
1621 HOWTO (R_ARM_RABS32
, /* type */
1623 0, /* size (0 = byte, 1 = short, 2 = long) */
1625 FALSE
, /* pc_relative */
1627 complain_overflow_dont
,/* complain_on_overflow */
1628 bfd_elf_generic_reloc
, /* special_function */
1629 "R_ARM_RABS32", /* name */
1630 FALSE
, /* partial_inplace */
1633 FALSE
), /* pcrel_offset */
1635 HOWTO (R_ARM_RPC24
, /* type */
1637 0, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE
, /* pc_relative */
1641 complain_overflow_dont
,/* complain_on_overflow */
1642 bfd_elf_generic_reloc
, /* special_function */
1643 "R_ARM_RPC24", /* name */
1644 FALSE
, /* partial_inplace */
1647 FALSE
), /* pcrel_offset */
1649 HOWTO (R_ARM_RBASE
, /* type */
1651 0, /* size (0 = byte, 1 = short, 2 = long) */
1653 FALSE
, /* pc_relative */
1655 complain_overflow_dont
,/* complain_on_overflow */
1656 bfd_elf_generic_reloc
, /* special_function */
1657 "R_ARM_RBASE", /* name */
1658 FALSE
, /* partial_inplace */
1661 FALSE
) /* pcrel_offset */
1664 static reloc_howto_type
*
1665 elf32_arm_howto_from_type (unsigned int r_type
)
1667 if (r_type
< ARRAY_SIZE (elf32_arm_howto_table_1
))
1668 return &elf32_arm_howto_table_1
[r_type
];
1670 if (r_type
>= R_ARM_RREL32
1671 && r_type
< R_ARM_RREL32
+ ARRAY_SIZE (elf32_arm_howto_table_2
))
1672 return &elf32_arm_howto_table_2
[r_type
- R_ARM_RREL32
];
1678 elf32_arm_info_to_howto (bfd
* abfd ATTRIBUTE_UNUSED
, arelent
* bfd_reloc
,
1679 Elf_Internal_Rela
* elf_reloc
)
1681 unsigned int r_type
;
1683 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1684 bfd_reloc
->howto
= elf32_arm_howto_from_type (r_type
);
1687 struct elf32_arm_reloc_map
1689 bfd_reloc_code_real_type bfd_reloc_val
;
1690 unsigned char elf_reloc_val
;
1693 /* All entries in this list must also be present in elf32_arm_howto_table. */
1694 static const struct elf32_arm_reloc_map elf32_arm_reloc_map
[] =
1696 {BFD_RELOC_NONE
, R_ARM_NONE
},
1697 {BFD_RELOC_ARM_PCREL_BRANCH
, R_ARM_PC24
},
1698 {BFD_RELOC_ARM_PCREL_CALL
, R_ARM_CALL
},
1699 {BFD_RELOC_ARM_PCREL_JUMP
, R_ARM_JUMP24
},
1700 {BFD_RELOC_ARM_PCREL_BLX
, R_ARM_XPC25
},
1701 {BFD_RELOC_THUMB_PCREL_BLX
, R_ARM_THM_XPC22
},
1702 {BFD_RELOC_32
, R_ARM_ABS32
},
1703 {BFD_RELOC_32_PCREL
, R_ARM_REL32
},
1704 {BFD_RELOC_8
, R_ARM_ABS8
},
1705 {BFD_RELOC_16
, R_ARM_ABS16
},
1706 {BFD_RELOC_ARM_OFFSET_IMM
, R_ARM_ABS12
},
1707 {BFD_RELOC_ARM_THUMB_OFFSET
, R_ARM_THM_ABS5
},
1708 {BFD_RELOC_THUMB_PCREL_BRANCH25
, R_ARM_THM_JUMP24
},
1709 {BFD_RELOC_THUMB_PCREL_BRANCH23
, R_ARM_THM_CALL
},
1710 {BFD_RELOC_THUMB_PCREL_BRANCH12
, R_ARM_THM_JUMP11
},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH20
, R_ARM_THM_JUMP19
},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH9
, R_ARM_THM_JUMP8
},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH7
, R_ARM_THM_JUMP6
},
1714 {BFD_RELOC_ARM_GLOB_DAT
, R_ARM_GLOB_DAT
},
1715 {BFD_RELOC_ARM_JUMP_SLOT
, R_ARM_JUMP_SLOT
},
1716 {BFD_RELOC_ARM_RELATIVE
, R_ARM_RELATIVE
},
1717 {BFD_RELOC_ARM_GOTOFF
, R_ARM_GOTOFF32
},
1718 {BFD_RELOC_ARM_GOTPC
, R_ARM_GOTPC
},
1719 {BFD_RELOC_ARM_GOT32
, R_ARM_GOT32
},
1720 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1721 {BFD_RELOC_ARM_TARGET1
, R_ARM_TARGET1
},
1722 {BFD_RELOC_ARM_ROSEGREL32
, R_ARM_ROSEGREL32
},
1723 {BFD_RELOC_ARM_SBREL32
, R_ARM_SBREL32
},
1724 {BFD_RELOC_ARM_PREL31
, R_ARM_PREL31
},
1725 {BFD_RELOC_ARM_TARGET2
, R_ARM_TARGET2
},
1726 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1727 {BFD_RELOC_ARM_TLS_GD32
, R_ARM_TLS_GD32
},
1728 {BFD_RELOC_ARM_TLS_LDO32
, R_ARM_TLS_LDO32
},
1729 {BFD_RELOC_ARM_TLS_LDM32
, R_ARM_TLS_LDM32
},
1730 {BFD_RELOC_ARM_TLS_DTPMOD32
, R_ARM_TLS_DTPMOD32
},
1731 {BFD_RELOC_ARM_TLS_DTPOFF32
, R_ARM_TLS_DTPOFF32
},
1732 {BFD_RELOC_ARM_TLS_TPOFF32
, R_ARM_TLS_TPOFF32
},
1733 {BFD_RELOC_ARM_TLS_IE32
, R_ARM_TLS_IE32
},
1734 {BFD_RELOC_ARM_TLS_LE32
, R_ARM_TLS_LE32
},
1735 {BFD_RELOC_VTABLE_INHERIT
, R_ARM_GNU_VTINHERIT
},
1736 {BFD_RELOC_VTABLE_ENTRY
, R_ARM_GNU_VTENTRY
},
1737 {BFD_RELOC_ARM_MOVW
, R_ARM_MOVW_ABS_NC
},
1738 {BFD_RELOC_ARM_MOVT
, R_ARM_MOVT_ABS
},
1739 {BFD_RELOC_ARM_MOVW_PCREL
, R_ARM_MOVW_PREL_NC
},
1740 {BFD_RELOC_ARM_MOVT_PCREL
, R_ARM_MOVT_PREL
},
1741 {BFD_RELOC_ARM_THUMB_MOVW
, R_ARM_THM_MOVW_ABS_NC
},
1742 {BFD_RELOC_ARM_THUMB_MOVT
, R_ARM_THM_MOVT_ABS
},
1743 {BFD_RELOC_ARM_THUMB_MOVW_PCREL
, R_ARM_THM_MOVW_PREL_NC
},
1744 {BFD_RELOC_ARM_THUMB_MOVT_PCREL
, R_ARM_THM_MOVT_PREL
},
1745 {BFD_RELOC_ARM_ALU_PC_G0_NC
, R_ARM_ALU_PC_G0_NC
},
1746 {BFD_RELOC_ARM_ALU_PC_G0
, R_ARM_ALU_PC_G0
},
1747 {BFD_RELOC_ARM_ALU_PC_G1_NC
, R_ARM_ALU_PC_G1_NC
},
1748 {BFD_RELOC_ARM_ALU_PC_G1
, R_ARM_ALU_PC_G1
},
1749 {BFD_RELOC_ARM_ALU_PC_G2
, R_ARM_ALU_PC_G2
},
1750 {BFD_RELOC_ARM_LDR_PC_G0
, R_ARM_LDR_PC_G0
},
1751 {BFD_RELOC_ARM_LDR_PC_G1
, R_ARM_LDR_PC_G1
},
1752 {BFD_RELOC_ARM_LDR_PC_G2
, R_ARM_LDR_PC_G2
},
1753 {BFD_RELOC_ARM_LDRS_PC_G0
, R_ARM_LDRS_PC_G0
},
1754 {BFD_RELOC_ARM_LDRS_PC_G1
, R_ARM_LDRS_PC_G1
},
1755 {BFD_RELOC_ARM_LDRS_PC_G2
, R_ARM_LDRS_PC_G2
},
1756 {BFD_RELOC_ARM_LDC_PC_G0
, R_ARM_LDC_PC_G0
},
1757 {BFD_RELOC_ARM_LDC_PC_G1
, R_ARM_LDC_PC_G1
},
1758 {BFD_RELOC_ARM_LDC_PC_G2
, R_ARM_LDC_PC_G2
},
1759 {BFD_RELOC_ARM_ALU_SB_G0_NC
, R_ARM_ALU_SB_G0_NC
},
1760 {BFD_RELOC_ARM_ALU_SB_G0
, R_ARM_ALU_SB_G0
},
1761 {BFD_RELOC_ARM_ALU_SB_G1_NC
, R_ARM_ALU_SB_G1_NC
},
1762 {BFD_RELOC_ARM_ALU_SB_G1
, R_ARM_ALU_SB_G1
},
1763 {BFD_RELOC_ARM_ALU_SB_G2
, R_ARM_ALU_SB_G2
},
1764 {BFD_RELOC_ARM_LDR_SB_G0
, R_ARM_LDR_SB_G0
},
1765 {BFD_RELOC_ARM_LDR_SB_G1
, R_ARM_LDR_SB_G1
},
1766 {BFD_RELOC_ARM_LDR_SB_G2
, R_ARM_LDR_SB_G2
},
1767 {BFD_RELOC_ARM_LDRS_SB_G0
, R_ARM_LDRS_SB_G0
},
1768 {BFD_RELOC_ARM_LDRS_SB_G1
, R_ARM_LDRS_SB_G1
},
1769 {BFD_RELOC_ARM_LDRS_SB_G2
, R_ARM_LDRS_SB_G2
},
1770 {BFD_RELOC_ARM_LDC_SB_G0
, R_ARM_LDC_SB_G0
},
1771 {BFD_RELOC_ARM_LDC_SB_G1
, R_ARM_LDC_SB_G1
},
1772 {BFD_RELOC_ARM_LDC_SB_G2
, R_ARM_LDC_SB_G2
},
1773 {BFD_RELOC_ARM_V4BX
, R_ARM_V4BX
}
1776 static reloc_howto_type
*
1777 elf32_arm_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1778 bfd_reloc_code_real_type code
)
1781 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_reloc_map
); i
++)
1782 if (elf32_arm_reloc_map
[i
].bfd_reloc_val
== code
)
1783 return elf32_arm_howto_from_type (elf32_arm_reloc_map
[i
].elf_reloc_val
);
1788 static reloc_howto_type
*
1789 elf32_arm_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1794 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_howto_table_1
); i
++)
1795 if (elf32_arm_howto_table_1
[i
].name
!= NULL
1796 && strcasecmp (elf32_arm_howto_table_1
[i
].name
, r_name
) == 0)
1797 return &elf32_arm_howto_table_1
[i
];
1799 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_howto_table_2
); i
++)
1800 if (elf32_arm_howto_table_2
[i
].name
!= NULL
1801 && strcasecmp (elf32_arm_howto_table_2
[i
].name
, r_name
) == 0)
1802 return &elf32_arm_howto_table_2
[i
];
1807 /* Support for core dump NOTE sections. */
1810 elf32_arm_nabi_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1815 switch (note
->descsz
)
1820 case 148: /* Linux/ARM 32-bit*/
1822 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1825 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1834 /* Make a ".reg/999" section. */
1835 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1836 size
, note
->descpos
+ offset
);
1840 elf32_arm_nabi_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1842 switch (note
->descsz
)
1847 case 124: /* Linux/ARM elf_prpsinfo */
1848 elf_tdata (abfd
)->core_program
1849 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
1850 elf_tdata (abfd
)->core_command
1851 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
1854 /* Note that for some reason, a spurious space is tacked
1855 onto the end of the args in some (at least one anyway)
1856 implementations, so strip it off if it exists. */
1858 char *command
= elf_tdata (abfd
)->core_command
;
1859 int n
= strlen (command
);
1861 if (0 < n
&& command
[n
- 1] == ' ')
1862 command
[n
- 1] = '\0';
1868 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1869 #define TARGET_LITTLE_NAME "elf32-littlearm"
1870 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1871 #define TARGET_BIG_NAME "elf32-bigarm"
1873 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1874 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1876 typedef unsigned long int insn32
;
1877 typedef unsigned short int insn16
;
1879 /* In lieu of proper flags, assume all EABIv4 or later objects are
1881 #define INTERWORK_FLAG(abfd) \
1882 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1883 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1885 /* The linker script knows the section names for placement.
1886 The entry_names are used to do simple name mangling on the stubs.
1887 Given a function name, and its type, the stub can be found. The
1888 name can be changed. The only requirement is the %s be present. */
1889 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1890 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1892 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1893 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1895 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1896 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1898 #define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1899 #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1901 /* The name of the dynamic interpreter. This is put in the .interp
1903 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1905 #ifdef FOUR_WORD_PLT
1907 /* The first entry in a procedure linkage table looks like
1908 this. It is set up so that any shared library function that is
1909 called before the relocation has been set up calls the dynamic
1911 static const bfd_vma elf32_arm_plt0_entry
[] =
1913 0xe52de004, /* str lr, [sp, #-4]! */
1914 0xe59fe010, /* ldr lr, [pc, #16] */
1915 0xe08fe00e, /* add lr, pc, lr */
1916 0xe5bef008, /* ldr pc, [lr, #8]! */
1919 /* Subsequent entries in a procedure linkage table look like
1921 static const bfd_vma elf32_arm_plt_entry
[] =
1923 0xe28fc600, /* add ip, pc, #NN */
1924 0xe28cca00, /* add ip, ip, #NN */
1925 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1926 0x00000000, /* unused */
1931 /* The first entry in a procedure linkage table looks like
1932 this. It is set up so that any shared library function that is
1933 called before the relocation has been set up calls the dynamic
1935 static const bfd_vma elf32_arm_plt0_entry
[] =
1937 0xe52de004, /* str lr, [sp, #-4]! */
1938 0xe59fe004, /* ldr lr, [pc, #4] */
1939 0xe08fe00e, /* add lr, pc, lr */
1940 0xe5bef008, /* ldr pc, [lr, #8]! */
1941 0x00000000, /* &GOT[0] - . */
1944 /* Subsequent entries in a procedure linkage table look like
1946 static const bfd_vma elf32_arm_plt_entry
[] =
1948 0xe28fc600, /* add ip, pc, #0xNN00000 */
1949 0xe28cca00, /* add ip, ip, #0xNN000 */
1950 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1955 /* The format of the first entry in the procedure linkage table
1956 for a VxWorks executable. */
1957 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry
[] =
1959 0xe52dc008, /* str ip,[sp,#-8]! */
1960 0xe59fc000, /* ldr ip,[pc] */
1961 0xe59cf008, /* ldr pc,[ip,#8] */
1962 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1965 /* The format of subsequent entries in a VxWorks executable. */
1966 static const bfd_vma elf32_arm_vxworks_exec_plt_entry
[] =
1968 0xe59fc000, /* ldr ip,[pc] */
1969 0xe59cf000, /* ldr pc,[ip] */
1970 0x00000000, /* .long @got */
1971 0xe59fc000, /* ldr ip,[pc] */
1972 0xea000000, /* b _PLT */
1973 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1976 /* The format of entries in a VxWorks shared library. */
1977 static const bfd_vma elf32_arm_vxworks_shared_plt_entry
[] =
1979 0xe59fc000, /* ldr ip,[pc] */
1980 0xe79cf009, /* ldr pc,[ip,r9] */
1981 0x00000000, /* .long @got */
1982 0xe59fc000, /* ldr ip,[pc] */
1983 0xe599f008, /* ldr pc,[r9,#8] */
1984 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1987 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1988 #define PLT_THUMB_STUB_SIZE 4
1989 static const bfd_vma elf32_arm_plt_thumb_stub
[] =
1995 /* The entries in a PLT when using a DLL-based target with multiple
1997 static const bfd_vma elf32_arm_symbian_plt_entry
[] =
1999 0xe51ff004, /* ldr pc, [pc, #-4] */
2000 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2003 #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
2004 #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
2005 #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
2006 #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
2007 #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
2008 #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
2010 static const bfd_vma arm_long_branch_stub
[] =
2012 0xe51ff004, /* ldr pc, [pc, #-4] */
2013 0x00000000, /* dcd R_ARM_ABS32(X) */
2016 static const bfd_vma arm_thumb_v4t_long_branch_stub
[] =
2018 0xe59fc000, /* ldr ip, [pc, #0] */
2019 0xe12fff1c, /* bx ip */
2020 0x00000000, /* dcd R_ARM_ABS32(X) */
2023 static const bfd_vma arm_thumb_thumb_long_branch_stub
[] =
2025 0x4e02b540, /* push {r6, lr} */
2026 /* ldr r6, [pc, #8] */
2027 0xe7fe46fe, /* mov lr, pc */
2029 0xbf00bd40, /* pop {r6, pc} */
2031 0x00000000, /* dcd R_ARM_ABS32(X) */
2034 static const bfd_vma arm_thumb_arm_v4t_long_branch_stub
[] =
2036 0x4e03b540, /* push {r6, lr} */
2037 /* ldr r6, [pc, #12] */
2038 0x473046fe, /* mov lr, pc */
2040 0xe8bd4040, /* pop {r6, pc} */
2041 0xe12fff1e, /* bx lr */
2042 0x00000000, /* dcd R_ARM_ABS32(X) */
2045 static const bfd_vma arm_pic_long_branch_stub
[] =
2047 0xe59fc000, /* ldr r12, [pc] */
2048 0xe08ff00c, /* add pc, pc, ip */
2049 0x00000000, /* dcd R_ARM_ABS32(X) */
2052 /* Section name for stubs is the associated section name plus this
2054 #define STUB_SUFFIX ".stub"
2056 enum elf32_arm_stub_type
2059 arm_stub_long_branch
,
2060 arm_thumb_v4t_stub_long_branch
,
2061 arm_thumb_thumb_stub_long_branch
,
2062 arm_thumb_arm_v4t_stub_long_branch
,
2063 arm_stub_pic_long_branch
,
2066 struct elf32_arm_stub_hash_entry
2068 /* Base hash table entry structure. */
2069 struct bfd_hash_entry root
;
2071 /* The stub section. */
2074 /* Offset within stub_sec of the beginning of this stub. */
2075 bfd_vma stub_offset
;
2077 /* Given the symbol's value and its section we can determine its final
2078 value when building the stubs (so the stub knows where to jump). */
2079 bfd_vma target_value
;
2080 asection
*target_section
;
2082 enum elf32_arm_stub_type stub_type
;
2084 /* The symbol table entry, if any, that this was derived from. */
2085 struct elf32_arm_link_hash_entry
*h
;
2087 /* Destination symbol type (STT_ARM_TFUNC, ...) */
2088 unsigned char st_type
;
2090 /* Where this stub is being called from, or, in the case of combined
2091 stub sections, the first input section in the group. */
2095 /* Used to build a map of a section. This is required for mixed-endian
2098 typedef struct elf32_elf_section_map
2103 elf32_arm_section_map
;
2105 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2109 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
,
2110 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
,
2111 VFP11_ERRATUM_ARM_VENEER
,
2112 VFP11_ERRATUM_THUMB_VENEER
2114 elf32_vfp11_erratum_type
;
2116 typedef struct elf32_vfp11_erratum_list
2118 struct elf32_vfp11_erratum_list
*next
;
2124 struct elf32_vfp11_erratum_list
*veneer
;
2125 unsigned int vfp_insn
;
2129 struct elf32_vfp11_erratum_list
*branch
;
2133 elf32_vfp11_erratum_type type
;
2135 elf32_vfp11_erratum_list
;
2137 typedef struct _arm_elf_section_data
2139 struct bfd_elf_section_data elf
;
2140 unsigned int mapcount
;
2141 unsigned int mapsize
;
2142 elf32_arm_section_map
*map
;
2143 unsigned int erratumcount
;
2144 elf32_vfp11_erratum_list
*erratumlist
;
2146 _arm_elf_section_data
;
2148 #define elf32_arm_section_data(sec) \
2149 ((_arm_elf_section_data *) elf_section_data (sec))
2151 /* The size of the thread control block. */
2154 struct elf_arm_obj_tdata
2156 struct elf_obj_tdata root
;
2158 /* tls_type for each local got entry. */
2159 char *local_got_tls_type
;
2161 /* Zero to warn when linking objects with incompatible enum sizes. */
2162 int no_enum_size_warning
;
2165 #define elf_arm_tdata(bfd) \
2166 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
2168 #define elf32_arm_local_got_tls_type(bfd) \
2169 (elf_arm_tdata (bfd)->local_got_tls_type)
2171 #define is_arm_elf(bfd) \
2172 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2173 && elf_tdata (bfd) != NULL \
2174 && elf_object_id (bfd) == ARM_ELF_TDATA)
2177 elf32_arm_mkobject (bfd
*abfd
)
2179 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_arm_obj_tdata
),
2183 /* The ARM linker needs to keep track of the number of relocs that it
2184 decides to copy in check_relocs for each symbol. This is so that
2185 it can discard PC relative relocs if it doesn't need them when
2186 linking with -Bsymbolic. We store the information in a field
2187 extending the regular ELF linker hash table. */
2189 /* This structure keeps track of the number of relocs we have copied
2190 for a given symbol. */
2191 struct elf32_arm_relocs_copied
2194 struct elf32_arm_relocs_copied
* next
;
2195 /* A section in dynobj. */
2197 /* Number of relocs copied in this section. */
2198 bfd_size_type count
;
2199 /* Number of PC-relative relocs copied in this section. */
2200 bfd_size_type pc_count
;
2203 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2205 /* Arm ELF linker hash entry. */
2206 struct elf32_arm_link_hash_entry
2208 struct elf_link_hash_entry root
;
2210 /* Number of PC relative relocs copied for this symbol. */
2211 struct elf32_arm_relocs_copied
* relocs_copied
;
2213 /* We reference count Thumb references to a PLT entry separately,
2214 so that we can emit the Thumb trampoline only if needed. */
2215 bfd_signed_vma plt_thumb_refcount
;
2217 /* Some references from Thumb code may be eliminated by BL->BLX
2218 conversion, so record them separately. */
2219 bfd_signed_vma plt_maybe_thumb_refcount
;
2221 /* Since PLT entries have variable size if the Thumb prologue is
2222 used, we need to record the index into .got.plt instead of
2223 recomputing it from the PLT offset. */
2224 bfd_signed_vma plt_got_offset
;
2226 #define GOT_UNKNOWN 0
2227 #define GOT_NORMAL 1
2228 #define GOT_TLS_GD 2
2229 #define GOT_TLS_IE 4
2230 unsigned char tls_type
;
2232 /* The symbol marking the real symbol location for exported thumb
2233 symbols with Arm stubs. */
2234 struct elf_link_hash_entry
*export_glue
;
2236 /* A pointer to the most recently used stub hash entry against this
2238 struct elf32_arm_stub_hash_entry
*stub_cache
;
2241 /* Traverse an arm ELF linker hash table. */
2242 #define elf32_arm_link_hash_traverse(table, func, info) \
2243 (elf_link_hash_traverse \
2245 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2248 /* Get the ARM elf linker hash table from a link_info structure. */
2249 #define elf32_arm_hash_table(info) \
2250 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2252 #define arm_stub_hash_lookup(table, string, create, copy) \
2253 ((struct elf32_arm_stub_hash_entry *) \
2254 bfd_hash_lookup ((table), (string), (create), (copy)))
2256 /* ARM ELF linker hash table. */
2257 struct elf32_arm_link_hash_table
2259 /* The main hash table. */
2260 struct elf_link_hash_table root
;
2262 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2263 bfd_size_type thumb_glue_size
;
2265 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2266 bfd_size_type arm_glue_size
;
2268 /* The size in bytes of section containing the ARMv4 BX veneers. */
2269 bfd_size_type bx_glue_size
;
2271 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2272 veneer has been populated. */
2273 bfd_vma bx_glue_offset
[15];
2275 /* The size in bytes of the section containing glue for VFP11 erratum
2277 bfd_size_type vfp11_erratum_glue_size
;
2279 /* An arbitrary input BFD chosen to hold the glue sections. */
2280 bfd
* bfd_of_glue_owner
;
2282 /* Nonzero to output a BE8 image. */
2285 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2286 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2289 /* The relocation to use for R_ARM_TARGET2 relocations. */
2292 /* 0 = Ignore R_ARM_V4BX.
2293 1 = Convert BX to MOV PC.
2294 2 = Generate v4 interworing stubs. */
2297 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2300 /* What sort of code sequences we should look for which may trigger the
2301 VFP11 denorm erratum. */
2302 bfd_arm_vfp11_fix vfp11_fix
;
2304 /* Global counter for the number of fixes we have emitted. */
2305 int num_vfp11_fixes
;
2307 /* Nonzero to force PIC branch veneers. */
2310 /* The number of bytes in the initial entry in the PLT. */
2311 bfd_size_type plt_header_size
;
2313 /* The number of bytes in the subsequent PLT etries. */
2314 bfd_size_type plt_entry_size
;
2316 /* True if the target system is VxWorks. */
2319 /* True if the target system is Symbian OS. */
2322 /* True if the target uses REL relocations. */
2325 /* Short-cuts to get to dynamic linker sections. */
2334 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2337 /* Data for R_ARM_TLS_LDM32 relocations. */
2340 bfd_signed_vma refcount
;
2344 /* Small local sym to section mapping cache. */
2345 struct sym_sec_cache sym_sec
;
2347 /* For convenience in allocate_dynrelocs. */
2350 /* The stub hash table. */
2351 struct bfd_hash_table stub_hash_table
;
2353 /* Linker stub bfd. */
2356 /* Linker call-backs. */
2357 asection
* (*add_stub_section
) (const char *, asection
*);
2358 void (*layout_sections_again
) (void);
2360 /* Array to keep track of which stub sections have been created, and
2361 information on stub grouping. */
2364 /* This is the section to which stubs in the group will be
2367 /* The stub section. */
2371 /* Assorted information used by elf32_arm_size_stubs. */
2372 unsigned int bfd_count
;
2374 asection
**input_list
;
2377 /* Create an entry in an ARM ELF linker hash table. */
2379 static struct bfd_hash_entry
*
2380 elf32_arm_link_hash_newfunc (struct bfd_hash_entry
* entry
,
2381 struct bfd_hash_table
* table
,
2382 const char * string
)
2384 struct elf32_arm_link_hash_entry
* ret
=
2385 (struct elf32_arm_link_hash_entry
*) entry
;
2387 /* Allocate the structure if it has not already been allocated by a
2390 ret
= bfd_hash_allocate (table
, sizeof (struct elf32_arm_link_hash_entry
));
2392 return (struct bfd_hash_entry
*) ret
;
2394 /* Call the allocation method of the superclass. */
2395 ret
= ((struct elf32_arm_link_hash_entry
*)
2396 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2400 ret
->relocs_copied
= NULL
;
2401 ret
->tls_type
= GOT_UNKNOWN
;
2402 ret
->plt_thumb_refcount
= 0;
2403 ret
->plt_maybe_thumb_refcount
= 0;
2404 ret
->plt_got_offset
= -1;
2405 ret
->export_glue
= NULL
;
2407 ret
->stub_cache
= NULL
;
2410 return (struct bfd_hash_entry
*) ret
;
2413 /* Initialize an entry in the stub hash table. */
2415 static struct bfd_hash_entry
*
2416 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2417 struct bfd_hash_table
*table
,
2420 /* Allocate the structure if it has not already been allocated by a
2424 entry
= bfd_hash_allocate (table
,
2425 sizeof (struct elf32_arm_stub_hash_entry
));
2430 /* Call the allocation method of the superclass. */
2431 entry
= bfd_hash_newfunc (entry
, table
, string
);
2434 struct elf32_arm_stub_hash_entry
*eh
;
2436 /* Initialize the local fields. */
2437 eh
= (struct elf32_arm_stub_hash_entry
*) entry
;
2438 eh
->stub_sec
= NULL
;
2439 eh
->stub_offset
= 0;
2440 eh
->target_value
= 0;
2441 eh
->target_section
= NULL
;
2442 eh
->stub_type
= arm_stub_none
;
2450 /* Return true if NAME is the name of the relocation section associated
2454 reloc_section_p (struct elf32_arm_link_hash_table
*htab
,
2455 const char *name
, asection
*s
)
2458 return CONST_STRNEQ (name
, ".rel") && strcmp (s
->name
, name
+ 4) == 0;
2460 return CONST_STRNEQ (name
, ".rela") && strcmp (s
->name
, name
+ 5) == 0;
2463 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2464 shortcuts to them in our hash table. */
2467 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2469 struct elf32_arm_link_hash_table
*htab
;
2471 htab
= elf32_arm_hash_table (info
);
2472 /* BPABI objects never have a GOT, or associated sections. */
2473 if (htab
->symbian_p
)
2476 if (! _bfd_elf_create_got_section (dynobj
, info
))
2479 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
2480 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
2481 if (!htab
->sgot
|| !htab
->sgotplt
)
2484 htab
->srelgot
= bfd_make_section_with_flags (dynobj
,
2485 RELOC_SECTION (htab
, ".got"),
2486 (SEC_ALLOC
| SEC_LOAD
2489 | SEC_LINKER_CREATED
2491 if (htab
->srelgot
== NULL
2492 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
2497 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2498 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2502 elf32_arm_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
2504 struct elf32_arm_link_hash_table
*htab
;
2506 htab
= elf32_arm_hash_table (info
);
2507 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
2510 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
2513 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
2514 htab
->srelplt
= bfd_get_section_by_name (dynobj
,
2515 RELOC_SECTION (htab
, ".plt"));
2516 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
2518 htab
->srelbss
= bfd_get_section_by_name (dynobj
,
2519 RELOC_SECTION (htab
, ".bss"));
2521 if (htab
->vxworks_p
)
2523 if (!elf_vxworks_create_dynamic_sections (dynobj
, info
, &htab
->srelplt2
))
2528 htab
->plt_header_size
= 0;
2529 htab
->plt_entry_size
2530 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry
);
2534 htab
->plt_header_size
2535 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry
);
2536 htab
->plt_entry_size
2537 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry
);
2544 || (!info
->shared
&& !htab
->srelbss
))
2550 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2553 elf32_arm_copy_indirect_symbol (struct bfd_link_info
*info
,
2554 struct elf_link_hash_entry
*dir
,
2555 struct elf_link_hash_entry
*ind
)
2557 struct elf32_arm_link_hash_entry
*edir
, *eind
;
2559 edir
= (struct elf32_arm_link_hash_entry
*) dir
;
2560 eind
= (struct elf32_arm_link_hash_entry
*) ind
;
2562 if (eind
->relocs_copied
!= NULL
)
2564 if (edir
->relocs_copied
!= NULL
)
2566 struct elf32_arm_relocs_copied
**pp
;
2567 struct elf32_arm_relocs_copied
*p
;
2569 /* Add reloc counts against the indirect sym to the direct sym
2570 list. Merge any entries against the same section. */
2571 for (pp
= &eind
->relocs_copied
; (p
= *pp
) != NULL
; )
2573 struct elf32_arm_relocs_copied
*q
;
2575 for (q
= edir
->relocs_copied
; q
!= NULL
; q
= q
->next
)
2576 if (q
->section
== p
->section
)
2578 q
->pc_count
+= p
->pc_count
;
2579 q
->count
+= p
->count
;
2586 *pp
= edir
->relocs_copied
;
2589 edir
->relocs_copied
= eind
->relocs_copied
;
2590 eind
->relocs_copied
= NULL
;
2593 if (ind
->root
.type
== bfd_link_hash_indirect
)
2595 /* Copy over PLT info. */
2596 edir
->plt_thumb_refcount
+= eind
->plt_thumb_refcount
;
2597 eind
->plt_thumb_refcount
= 0;
2598 edir
->plt_maybe_thumb_refcount
+= eind
->plt_maybe_thumb_refcount
;
2599 eind
->plt_maybe_thumb_refcount
= 0;
2601 if (dir
->got
.refcount
<= 0)
2603 edir
->tls_type
= eind
->tls_type
;
2604 eind
->tls_type
= GOT_UNKNOWN
;
2608 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2611 /* Create an ARM elf linker hash table. */
2613 static struct bfd_link_hash_table
*
2614 elf32_arm_link_hash_table_create (bfd
*abfd
)
2616 struct elf32_arm_link_hash_table
*ret
;
2617 bfd_size_type amt
= sizeof (struct elf32_arm_link_hash_table
);
2619 ret
= bfd_malloc (amt
);
2623 if (!_bfd_elf_link_hash_table_init (& ret
->root
, abfd
,
2624 elf32_arm_link_hash_newfunc
,
2625 sizeof (struct elf32_arm_link_hash_entry
)))
2632 ret
->sgotplt
= NULL
;
2633 ret
->srelgot
= NULL
;
2635 ret
->srelplt
= NULL
;
2636 ret
->sdynbss
= NULL
;
2637 ret
->srelbss
= NULL
;
2638 ret
->srelplt2
= NULL
;
2639 ret
->thumb_glue_size
= 0;
2640 ret
->arm_glue_size
= 0;
2641 ret
->bx_glue_size
= 0;
2642 memset (ret
->bx_glue_offset
, 0, sizeof (ret
->bx_glue_offset
));
2643 ret
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
2644 ret
->vfp11_erratum_glue_size
= 0;
2645 ret
->num_vfp11_fixes
= 0;
2646 ret
->bfd_of_glue_owner
= NULL
;
2647 ret
->byteswap_code
= 0;
2648 ret
->target1_is_rel
= 0;
2649 ret
->target2_reloc
= R_ARM_NONE
;
2650 #ifdef FOUR_WORD_PLT
2651 ret
->plt_header_size
= 16;
2652 ret
->plt_entry_size
= 16;
2654 ret
->plt_header_size
= 20;
2655 ret
->plt_entry_size
= 12;
2662 ret
->sym_sec
.abfd
= NULL
;
2664 ret
->tls_ldm_got
.refcount
= 0;
2666 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
,
2667 sizeof (struct elf32_arm_stub_hash_entry
)))
2673 return &ret
->root
.root
;
2676 /* Free the derived linker hash table. */
2679 elf32_arm_hash_table_free (struct bfd_link_hash_table
*hash
)
2681 struct elf32_arm_link_hash_table
*ret
2682 = (struct elf32_arm_link_hash_table
*) hash
;
2684 bfd_hash_table_free (&ret
->stub_hash_table
);
2685 _bfd_generic_link_hash_table_free (hash
);
2688 /* Determine if we're dealing with a Thumb only architecture. */
2691 using_thumb_only (struct elf32_arm_link_hash_table
*globals
)
2693 int arch
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2697 if (arch
!= TAG_CPU_ARCH_V7
)
2700 profile
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2701 Tag_CPU_arch_profile
);
2703 return profile
== 'M';
2706 /* Determine if we're dealing with a Thumb-2 object. */
2709 using_thumb2 (struct elf32_arm_link_hash_table
*globals
)
2711 int arch
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2713 return arch
== TAG_CPU_ARCH_V6T2
|| arch
>= TAG_CPU_ARCH_V7
;
2717 arm_stub_is_thumb (enum elf32_arm_stub_type stub_type
)
2721 case arm_thumb_thumb_stub_long_branch
:
2722 case arm_thumb_arm_v4t_stub_long_branch
:
2733 /* Determine the type of stub needed, if any, for a call. */
2735 static enum elf32_arm_stub_type
2736 arm_type_of_stub (struct bfd_link_info
*info
,
2737 asection
*input_sec
,
2738 const Elf_Internal_Rela
*rel
,
2739 unsigned char st_type
,
2740 struct elf32_arm_link_hash_entry
*hash
,
2741 bfd_vma destination
)
2744 bfd_signed_vma branch_offset
;
2745 unsigned int r_type
;
2746 struct elf32_arm_link_hash_table
* globals
;
2749 enum elf32_arm_stub_type stub_type
= arm_stub_none
;
2751 /* We don't know the actual type of destination in case it is of
2752 type STT_SECTION: give up */
2753 if (st_type
== STT_SECTION
)
2756 globals
= elf32_arm_hash_table (info
);
2758 thumb_only
= using_thumb_only (globals
);
2760 thumb2
= using_thumb2 (globals
);
2762 /* Determine where the call point is. */
2763 location
= (input_sec
->output_offset
2764 + input_sec
->output_section
->vma
2767 branch_offset
= (bfd_signed_vma
)(destination
- location
);
2769 r_type
= ELF32_R_TYPE (rel
->r_info
);
2771 /* If the call will go through a PLT entry then we do not need
2773 if (globals
->splt
!= NULL
&& hash
->root
.plt
.offset
!= (bfd_vma
) -1)
2776 if (r_type
== R_ARM_THM_CALL
)
2779 && (branch_offset
> THM_MAX_FWD_BRANCH_OFFSET
2780 || (branch_offset
< THM_MAX_BWD_BRANCH_OFFSET
)))
2782 && (branch_offset
> THM2_MAX_FWD_BRANCH_OFFSET
2783 || (branch_offset
< THM2_MAX_BWD_BRANCH_OFFSET
)))
2784 || ((st_type
!= STT_ARM_TFUNC
) && !globals
->use_blx
))
2786 if (st_type
== STT_ARM_TFUNC
)
2788 /* Thumb to thumb. */
2791 stub_type
= (info
->shared
| globals
->pic_veneer
)
2792 ? ((globals
->use_blx
)
2793 ? arm_stub_pic_long_branch
2795 : (globals
->use_blx
)
2796 ? arm_stub_long_branch
2801 stub_type
= (info
->shared
| globals
->pic_veneer
)
2803 : (globals
->use_blx
)
2804 ? arm_thumb_thumb_stub_long_branch
2811 stub_type
= (info
->shared
| globals
->pic_veneer
)
2812 ? ((globals
->use_blx
)
2813 ? arm_stub_pic_long_branch
2815 : (globals
->use_blx
)
2816 ? arm_stub_long_branch
2817 : arm_thumb_arm_v4t_stub_long_branch
;
2821 else if (r_type
== R_ARM_CALL
)
2823 if (st_type
== STT_ARM_TFUNC
)
2826 /* We have an extra 2-bytes reach because of the mode change
2827 (bit 24 (H) of BLX encoding). */
2828 if (branch_offset
> (ARM_MAX_FWD_BRANCH_OFFSET
+ 2)
2829 || (branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
)
2830 || !globals
->use_blx
)
2832 stub_type
= (info
->shared
| globals
->pic_veneer
)
2833 ? arm_stub_pic_long_branch
2834 : (globals
->use_blx
)
2835 ? arm_stub_long_branch
2836 : arm_thumb_v4t_stub_long_branch
;
2842 if (branch_offset
> ARM_MAX_FWD_BRANCH_OFFSET
2843 || (branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
))
2845 stub_type
= (info
->shared
| globals
->pic_veneer
)
2846 ? arm_stub_pic_long_branch
2847 : arm_stub_long_branch
;
2855 /* Build a name for an entry in the stub hash table. */
2858 elf32_arm_stub_name (const asection
*input_section
,
2859 const asection
*sym_sec
,
2860 const struct elf32_arm_link_hash_entry
*hash
,
2861 const Elf_Internal_Rela
*rel
)
2868 len
= 8 + 1 + strlen (hash
->root
.root
.root
.string
) + 1 + 8 + 1;
2869 stub_name
= bfd_malloc (len
);
2870 if (stub_name
!= NULL
)
2871 sprintf (stub_name
, "%08x_%s+%x",
2872 input_section
->id
& 0xffffffff,
2873 hash
->root
.root
.root
.string
,
2874 (int) rel
->r_addend
& 0xffffffff);
2878 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
2879 stub_name
= bfd_malloc (len
);
2880 if (stub_name
!= NULL
)
2881 sprintf (stub_name
, "%08x_%x:%x+%x",
2882 input_section
->id
& 0xffffffff,
2883 sym_sec
->id
& 0xffffffff,
2884 (int) ELF32_R_SYM (rel
->r_info
) & 0xffffffff,
2885 (int) rel
->r_addend
& 0xffffffff);
2891 /* Look up an entry in the stub hash. Stub entries are cached because
2892 creating the stub name takes a bit of time. */
2894 static struct elf32_arm_stub_hash_entry
*
2895 elf32_arm_get_stub_entry (const asection
*input_section
,
2896 const asection
*sym_sec
,
2897 struct elf_link_hash_entry
*hash
,
2898 const Elf_Internal_Rela
*rel
,
2899 struct elf32_arm_link_hash_table
*htab
)
2901 struct elf32_arm_stub_hash_entry
*stub_entry
;
2902 struct elf32_arm_link_hash_entry
*h
= (struct elf32_arm_link_hash_entry
*) hash
;
2903 const asection
*id_sec
;
2905 if ((input_section
->flags
& SEC_CODE
) == 0)
2908 /* If this input section is part of a group of sections sharing one
2909 stub section, then use the id of the first section in the group.
2910 Stub names need to include a section id, as there may well be
2911 more than one stub used to reach say, printf, and we need to
2912 distinguish between them. */
2913 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
2915 if (h
!= NULL
&& h
->stub_cache
!= NULL
2916 && h
->stub_cache
->h
== h
2917 && h
->stub_cache
->id_sec
== id_sec
)
2919 stub_entry
= h
->stub_cache
;
2925 stub_name
= elf32_arm_stub_name (id_sec
, sym_sec
, h
, rel
);
2926 if (stub_name
== NULL
)
2929 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
,
2930 stub_name
, FALSE
, FALSE
);
2932 h
->stub_cache
= stub_entry
;
2940 /* Add a new stub entry to the stub hash. Not all fields of the new
2941 stub entry are initialised. */
2943 static struct elf32_arm_stub_hash_entry
*
2944 elf32_arm_add_stub (const char *stub_name
,
2946 struct elf32_arm_link_hash_table
*htab
)
2950 struct elf32_arm_stub_hash_entry
*stub_entry
;
2952 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
2953 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
2954 if (stub_sec
== NULL
)
2956 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
2957 if (stub_sec
== NULL
)
2963 namelen
= strlen (link_sec
->name
);
2964 len
= namelen
+ sizeof (STUB_SUFFIX
);
2965 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
2969 memcpy (s_name
, link_sec
->name
, namelen
);
2970 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
2971 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
2972 if (stub_sec
== NULL
)
2974 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
2976 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
2979 /* Enter this entry into the linker stub hash table. */
2980 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
2982 if (stub_entry
== NULL
)
2984 (*_bfd_error_handler
) (_("%s: cannot create stub entry %s"),
2990 stub_entry
->stub_sec
= stub_sec
;
2991 stub_entry
->stub_offset
= 0;
2992 stub_entry
->id_sec
= link_sec
;
2997 /* Store an Arm insn into an output section not processed by
2998 elf32_arm_write_section. */
3001 put_arm_insn (struct elf32_arm_link_hash_table
*htab
,
3002 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3004 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3005 bfd_putl32 (val
, ptr
);
3007 bfd_putb32 (val
, ptr
);
3010 /* Store a 16-bit Thumb insn into an output section not processed by
3011 elf32_arm_write_section. */
3014 put_thumb_insn (struct elf32_arm_link_hash_table
*htab
,
3015 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3017 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3018 bfd_putl16 (val
, ptr
);
3020 bfd_putb16 (val
, ptr
);
3024 arm_build_one_stub (struct bfd_hash_entry
*gen_entry
,
3027 struct elf32_arm_stub_hash_entry
*stub_entry
;
3028 struct bfd_link_info
*info
;
3029 struct elf32_arm_link_hash_table
*htab
;
3037 const bfd_vma
*template;
3039 struct elf32_arm_link_hash_table
* globals
;
3041 /* Massage our args to the form they really have. */
3042 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
3043 info
= (struct bfd_link_info
*) in_arg
;
3045 globals
= elf32_arm_hash_table (info
);
3047 htab
= elf32_arm_hash_table (info
);
3048 stub_sec
= stub_entry
->stub_sec
;
3050 /* Make a note of the offset within the stubs for this entry. */
3051 stub_entry
->stub_offset
= stub_sec
->size
;
3052 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
3054 stub_bfd
= stub_sec
->owner
;
3056 /* This is the address of the start of the stub. */
3057 stub_addr
= stub_sec
->output_section
->vma
+ stub_sec
->output_offset
3058 + stub_entry
->stub_offset
;
3060 /* This is the address of the stub destination. */
3061 sym_value
= (stub_entry
->target_value
3062 + stub_entry
->target_section
->output_offset
3063 + stub_entry
->target_section
->output_section
->vma
);
3065 switch (stub_entry
->stub_type
)
3067 case arm_stub_long_branch
:
3068 template = arm_long_branch_stub
;
3069 template_size
= (sizeof (arm_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3071 case arm_thumb_v4t_stub_long_branch
:
3072 template = arm_thumb_v4t_long_branch_stub
;
3073 template_size
= (sizeof (arm_thumb_v4t_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3075 case arm_thumb_thumb_stub_long_branch
:
3076 template = arm_thumb_thumb_long_branch_stub
;
3077 template_size
= (sizeof (arm_thumb_thumb_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3079 case arm_thumb_arm_v4t_stub_long_branch
:
3080 template = arm_thumb_arm_v4t_long_branch_stub
;
3081 template_size
= (sizeof (arm_thumb_arm_v4t_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3083 case arm_stub_pic_long_branch
:
3084 template = arm_pic_long_branch_stub
;
3085 template_size
= (sizeof (arm_pic_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3093 for (i
= 0; i
< (template_size
/ 4); i
++)
3095 /* A 0 pattern is a placeholder, every other pattern is an
3097 if (template[i
] != 0)
3098 put_arm_insn (globals
, stub_bfd
, template[i
], loc
+ size
);
3100 bfd_put_32 (stub_bfd
, template[i
], loc
+ size
);
3104 stub_sec
->size
+= size
;
3106 /* Destination is Thumb. Force bit 0 to 1 to reflect this. */
3107 if (stub_entry
->st_type
== STT_ARM_TFUNC
)
3110 switch (stub_entry
->stub_type
)
3112 case arm_stub_long_branch
:
3113 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32
),
3114 stub_bfd
, stub_sec
, stub_sec
->contents
+ 4,
3115 stub_entry
->stub_offset
, sym_value
, 0);
3117 case arm_thumb_v4t_stub_long_branch
:
3118 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32
),
3119 stub_bfd
, stub_sec
, stub_sec
->contents
+ 8,
3120 stub_entry
->stub_offset
, sym_value
, 0);
3122 case arm_thumb_thumb_stub_long_branch
:
3123 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32
),
3124 stub_bfd
, stub_sec
, stub_sec
->contents
+ 12,
3125 stub_entry
->stub_offset
, sym_value
, 0);
3127 case arm_thumb_arm_v4t_stub_long_branch
:
3128 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32
),
3129 stub_bfd
, stub_sec
, stub_sec
->contents
+ 20,
3130 stub_entry
->stub_offset
, sym_value
, 0);
3132 case arm_stub_pic_long_branch
:
3133 /* We want the value relative to the address 8 bytes from the
3134 start of the stub. */
3135 sym_value
-= stub_addr
+ 8;
3137 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32
),
3138 stub_bfd
, stub_sec
, stub_sec
->contents
+ 8,
3139 stub_entry
->stub_offset
, sym_value
, 0);
3148 /* As above, but don't actually build the stub. Just bump offset so
3149 we know stub section sizes. */
3152 arm_size_one_stub (struct bfd_hash_entry
*gen_entry
,
3155 struct elf32_arm_stub_hash_entry
*stub_entry
;
3156 struct elf32_arm_link_hash_table
*htab
;
3157 const bfd_vma
*template;
3162 /* Massage our args to the form they really have. */
3163 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
3164 htab
= (struct elf32_arm_link_hash_table
*) in_arg
;
3166 switch (stub_entry
->stub_type
)
3168 case arm_stub_long_branch
:
3169 template = arm_long_branch_stub
;
3170 template_size
= (sizeof (arm_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3172 case arm_thumb_v4t_stub_long_branch
:
3173 template = arm_thumb_v4t_long_branch_stub
;
3174 template_size
= (sizeof (arm_thumb_v4t_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3176 case arm_thumb_thumb_stub_long_branch
:
3177 template = arm_thumb_thumb_long_branch_stub
;
3178 template_size
= (sizeof (arm_thumb_thumb_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3180 case arm_thumb_arm_v4t_stub_long_branch
:
3181 template = arm_thumb_arm_v4t_long_branch_stub
;
3182 template_size
= (sizeof (arm_thumb_arm_v4t_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3184 case arm_stub_pic_long_branch
:
3185 template = arm_pic_long_branch_stub
;
3186 template_size
= (sizeof (arm_pic_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3195 for (i
= 0; i
< (template_size
/ 4); i
++)
3197 size
= (size
+ 7) & ~7;
3198 stub_entry
->stub_sec
->size
+= size
;
3202 /* External entry points for sizing and building linker stubs. */
3204 /* Set up various things so that we can make a list of input sections
3205 for each output section included in the link. Returns -1 on error,
3206 0 when no stubs will be needed, and 1 on success. */
3209 elf32_arm_setup_section_lists (bfd
*output_bfd
,
3210 struct bfd_link_info
*info
)
3213 unsigned int bfd_count
;
3214 int top_id
, top_index
;
3216 asection
**input_list
, **list
;
3218 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3220 if (! is_elf_hash_table (htab
))
3223 /* Count the number of input BFDs and find the top input section id. */
3224 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3226 input_bfd
= input_bfd
->link_next
)
3229 for (section
= input_bfd
->sections
;
3231 section
= section
->next
)
3233 if (top_id
< section
->id
)
3234 top_id
= section
->id
;
3237 htab
->bfd_count
= bfd_count
;
3239 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3240 htab
->stub_group
= bfd_zmalloc (amt
);
3241 if (htab
->stub_group
== NULL
)
3244 /* We can't use output_bfd->section_count here to find the top output
3245 section index as some sections may have been removed, and
3246 _bfd_strip_section_from_output doesn't renumber the indices. */
3247 for (section
= output_bfd
->sections
, top_index
= 0;
3249 section
= section
->next
)
3251 if (top_index
< section
->index
)
3252 top_index
= section
->index
;
3255 htab
->top_index
= top_index
;
3256 amt
= sizeof (asection
*) * (top_index
+ 1);
3257 input_list
= bfd_malloc (amt
);
3258 htab
->input_list
= input_list
;
3259 if (input_list
== NULL
)
3262 /* For sections we aren't interested in, mark their entries with a
3263 value we can check later. */
3264 list
= input_list
+ top_index
;
3266 *list
= bfd_abs_section_ptr
;
3267 while (list
-- != input_list
);
3269 for (section
= output_bfd
->sections
;
3271 section
= section
->next
)
3273 if ((section
->flags
& SEC_CODE
) != 0)
3274 input_list
[section
->index
] = NULL
;
3280 /* The linker repeatedly calls this function for each input section,
3281 in the order that input sections are linked into output sections.
3282 Build lists of input sections to determine groupings between which
3283 we may insert linker stubs. */
3286 elf32_arm_next_input_section (struct bfd_link_info
*info
,
3289 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3291 if (isec
->output_section
->index
<= htab
->top_index
)
3293 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
3295 if (*list
!= bfd_abs_section_ptr
)
3297 /* Steal the link_sec pointer for our list. */
3298 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3299 /* This happens to make the list in reverse order,
3300 which is what we want. */
3301 PREV_SEC (isec
) = *list
;
3307 /* See whether we can group stub sections together. Grouping stub
3308 sections may result in fewer stubs. More importantly, we need to
3309 put all .init* and .fini* stubs at the beginning of the .init or
3310 .fini output sections respectively, because glibc splits the
3311 _init and _fini functions into multiple parts. Putting a stub in
3312 the middle of a function is not a good idea. */
3315 group_sections (struct elf32_arm_link_hash_table
*htab
,
3316 bfd_size_type stub_group_size
,
3317 bfd_boolean stubs_always_before_branch
)
3319 asection
**list
= htab
->input_list
+ htab
->top_index
;
3323 asection
*tail
= *list
;
3325 if (tail
== bfd_abs_section_ptr
)
3328 while (tail
!= NULL
)
3332 bfd_size_type total
;
3336 while ((prev
= PREV_SEC (curr
)) != NULL
3337 && ((total
+= curr
->output_offset
- prev
->output_offset
)
3341 /* OK, the size from the start of CURR to the end is less
3342 than stub_group_size and thus can be handled by one stub
3343 section. (Or the tail section is itself larger than
3344 stub_group_size, in which case we may be toast.)
3345 We should really be keeping track of the total size of
3346 stubs added here, as stubs contribute to the final output
3350 prev
= PREV_SEC (tail
);
3351 /* Set up this stub group. */
3352 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3354 while (tail
!= curr
&& (tail
= prev
) != NULL
);
3356 /* But wait, there's more! Input sections up to stub_group_size
3357 bytes before the stub section can be handled by it too. */
3358 if (!stubs_always_before_branch
)
3362 && ((total
+= tail
->output_offset
- prev
->output_offset
)
3366 prev
= PREV_SEC (tail
);
3367 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3373 while (list
-- != htab
->input_list
);
3375 free (htab
->input_list
);
3379 /* Determine and set the size of the stub section for a final link.
3381 The basic idea here is to examine all the relocations looking for
3382 PC-relative calls to a target that is unreachable with a "bl"
3386 elf32_arm_size_stubs (bfd
*output_bfd
,
3388 struct bfd_link_info
*info
,
3389 bfd_signed_vma group_size
,
3390 asection
* (*add_stub_section
) (const char *, asection
*),
3391 void (*layout_sections_again
) (void))
3393 bfd_size_type stub_group_size
;
3394 bfd_boolean stubs_always_before_branch
;
3395 bfd_boolean stub_changed
= 0;
3396 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3398 /* Propagate mach to stub bfd, because it may not have been
3399 finalized when we created stub_bfd. */
3400 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
3401 bfd_get_mach (output_bfd
));
3403 /* Stash our params away. */
3404 htab
->stub_bfd
= stub_bfd
;
3405 htab
->add_stub_section
= add_stub_section
;
3406 htab
->layout_sections_again
= layout_sections_again
;
3407 stubs_always_before_branch
= group_size
< 0;
3409 stub_group_size
= -group_size
;
3411 stub_group_size
= group_size
;
3413 if (stub_group_size
== 1)
3415 /* Default values. */
3416 /* Thumb branch range is +-4MB has to be used as the default
3417 maximum size (a given section can contain both ARM and Thumb
3418 code, so the worst case has to be taken into account).
3420 This value is 24K less than that, which allows for 2025
3421 12-byte stubs. If we exceed that, then we will fail to link.
3422 The user will have to relink with an explicit group size
3424 stub_group_size
= 4170000;
3427 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
3432 unsigned int bfd_indx
;
3435 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
3437 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
3439 Elf_Internal_Shdr
*symtab_hdr
;
3441 Elf_Internal_Sym
*local_syms
= NULL
;
3443 /* We'll need the symbol table in a second. */
3444 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3445 if (symtab_hdr
->sh_info
== 0)
3448 /* Walk over each section attached to the input bfd. */
3449 for (section
= input_bfd
->sections
;
3451 section
= section
->next
)
3453 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
3455 /* If there aren't any relocs, then there's nothing more
3457 if ((section
->flags
& SEC_RELOC
) == 0
3458 || section
->reloc_count
== 0
3459 || (section
->flags
& SEC_CODE
) == 0)
3462 /* If this section is a link-once section that will be
3463 discarded, then don't create any stubs. */
3464 if (section
->output_section
== NULL
3465 || section
->output_section
->owner
!= output_bfd
)
3468 /* Get the relocs. */
3470 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
3471 NULL
, info
->keep_memory
);
3472 if (internal_relocs
== NULL
)
3473 goto error_ret_free_local
;
3475 /* Now examine each relocation. */
3476 irela
= internal_relocs
;
3477 irelaend
= irela
+ section
->reloc_count
;
3478 for (; irela
< irelaend
; irela
++)
3480 unsigned int r_type
, r_indx
;
3481 enum elf32_arm_stub_type stub_type
;
3482 struct elf32_arm_stub_hash_entry
*stub_entry
;
3485 bfd_vma destination
;
3486 struct elf32_arm_link_hash_entry
*hash
;
3488 const asection
*id_sec
;
3489 unsigned char st_type
;
3491 r_type
= ELF32_R_TYPE (irela
->r_info
);
3492 r_indx
= ELF32_R_SYM (irela
->r_info
);
3494 if (r_type
>= (unsigned int) R_ARM_max
)
3496 bfd_set_error (bfd_error_bad_value
);
3497 error_ret_free_internal
:
3498 if (elf_section_data (section
)->relocs
== NULL
)
3499 free (internal_relocs
);
3500 goto error_ret_free_local
;
3503 /* Only look for stubs on call instructions. */
3504 if ((r_type
!= (unsigned int) R_ARM_CALL
)
3505 && (r_type
!= (unsigned int) R_ARM_THM_CALL
))
3508 /* Now determine the call target, its name, value,
3514 if (r_indx
< symtab_hdr
->sh_info
)
3516 /* It's a local symbol. */
3517 Elf_Internal_Sym
*sym
;
3518 Elf_Internal_Shdr
*hdr
;
3520 if (local_syms
== NULL
)
3523 = (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3524 if (local_syms
== NULL
)
3526 = bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
3527 symtab_hdr
->sh_info
, 0,
3529 if (local_syms
== NULL
)
3530 goto error_ret_free_internal
;
3533 sym
= local_syms
+ r_indx
;
3534 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
3535 sym_sec
= hdr
->bfd_section
;
3536 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
3537 sym_value
= sym
->st_value
;
3538 destination
= (sym_value
+ irela
->r_addend
3539 + sym_sec
->output_offset
3540 + sym_sec
->output_section
->vma
);
3541 st_type
= ELF_ST_TYPE (sym
->st_info
);
3545 /* It's an external symbol. */
3548 e_indx
= r_indx
- symtab_hdr
->sh_info
;
3549 hash
= ((struct elf32_arm_link_hash_entry
*)
3550 elf_sym_hashes (input_bfd
)[e_indx
]);
3552 while (hash
->root
.root
.type
== bfd_link_hash_indirect
3553 || hash
->root
.root
.type
== bfd_link_hash_warning
)
3554 hash
= ((struct elf32_arm_link_hash_entry
*)
3555 hash
->root
.root
.u
.i
.link
);
3557 if (hash
->root
.root
.type
== bfd_link_hash_defined
3558 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
3560 sym_sec
= hash
->root
.root
.u
.def
.section
;
3561 sym_value
= hash
->root
.root
.u
.def
.value
;
3562 if (sym_sec
->output_section
!= NULL
)
3563 destination
= (sym_value
+ irela
->r_addend
3564 + sym_sec
->output_offset
3565 + sym_sec
->output_section
->vma
);
3567 else if (hash
->root
.root
.type
== bfd_link_hash_undefweak
3568 || hash
->root
.root
.type
== bfd_link_hash_undefined
)
3569 /* For a shared library, these will need a PLT stub,
3570 which is treated separately.
3571 For absolute code, they cannot be handled. */
3575 bfd_set_error (bfd_error_bad_value
);
3576 goto error_ret_free_internal
;
3578 st_type
= ELF_ST_TYPE (hash
->root
.type
);
3581 /* Determine what (if any) linker stub is needed. */
3582 stub_type
= arm_type_of_stub (info
, section
, irela
, st_type
,
3584 if (stub_type
== arm_stub_none
)
3587 /* Support for grouping stub sections. */
3588 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
3590 /* Get the name of this stub. */
3591 stub_name
= elf32_arm_stub_name (id_sec
, sym_sec
, hash
, irela
);
3593 goto error_ret_free_internal
;
3595 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
,
3598 if (stub_entry
!= NULL
)
3600 /* The proper stub has already been created. */
3605 stub_entry
= elf32_arm_add_stub (stub_name
, section
, htab
);
3606 if (stub_entry
== NULL
)
3609 goto error_ret_free_internal
;
3612 stub_entry
->target_value
= sym_value
;
3613 stub_entry
->target_section
= sym_sec
;
3614 stub_entry
->stub_type
= stub_type
;
3615 stub_entry
->h
= hash
;
3616 stub_entry
->st_type
= st_type
;
3617 stub_changed
= TRUE
;
3620 /* We're done with the internal relocs, free them. */
3621 if (elf_section_data (section
)->relocs
== NULL
)
3622 free (internal_relocs
);
3629 /* OK, we've added some stubs. Find out the new size of the
3631 for (stub_sec
= htab
->stub_bfd
->sections
;
3633 stub_sec
= stub_sec
->next
)
3636 bfd_hash_traverse (&htab
->stub_hash_table
, arm_size_one_stub
, htab
);
3638 /* Ask the linker to do its stuff. */
3639 (*htab
->layout_sections_again
) ();
3640 stub_changed
= FALSE
;
3645 error_ret_free_local
:
3649 /* Build all the stubs associated with the current output file. The
3650 stubs are kept in a hash table attached to the main linker hash
3651 table. We also set up the .plt entries for statically linked PIC
3652 functions here. This function is called via arm_elf_finish in the
3656 elf32_arm_build_stubs (struct bfd_link_info
*info
)
3659 struct bfd_hash_table
*table
;
3660 struct elf32_arm_link_hash_table
*htab
;
3662 htab
= elf32_arm_hash_table (info
);
3664 for (stub_sec
= htab
->stub_bfd
->sections
;
3666 stub_sec
= stub_sec
->next
)
3670 /* Ignore non-stub sections */
3671 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
3674 /* Allocate memory to hold the linker stubs. */
3675 size
= stub_sec
->size
;
3676 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
3677 if (stub_sec
->contents
== NULL
&& size
!= 0)
3682 /* Build the stubs as directed by the stub hash table. */
3683 table
= &htab
->stub_hash_table
;
3684 bfd_hash_traverse (table
, arm_build_one_stub
, info
);
3689 /* Locate the Thumb encoded calling stub for NAME. */
3691 static struct elf_link_hash_entry
*
3692 find_thumb_glue (struct bfd_link_info
*link_info
,
3694 char **error_message
)
3697 struct elf_link_hash_entry
*hash
;
3698 struct elf32_arm_link_hash_table
*hash_table
;
3700 /* We need a pointer to the armelf specific hash table. */
3701 hash_table
= elf32_arm_hash_table (link_info
);
3703 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
3704 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
3706 BFD_ASSERT (tmp_name
);
3708 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
3710 hash
= elf_link_hash_lookup
3711 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3714 && asprintf (error_message
, _("unable to find THUMB glue '%s' for '%s'"),
3715 tmp_name
, name
) == -1)
3716 *error_message
= (char *) bfd_errmsg (bfd_error_system_call
);
3723 /* Locate the ARM encoded calling stub for NAME. */
3725 static struct elf_link_hash_entry
*
3726 find_arm_glue (struct bfd_link_info
*link_info
,
3728 char **error_message
)
3731 struct elf_link_hash_entry
*myh
;
3732 struct elf32_arm_link_hash_table
*hash_table
;
3734 /* We need a pointer to the elfarm specific hash table. */
3735 hash_table
= elf32_arm_hash_table (link_info
);
3737 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
3738 + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
3740 BFD_ASSERT (tmp_name
);
3742 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
3744 myh
= elf_link_hash_lookup
3745 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3748 && asprintf (error_message
, _("unable to find ARM glue '%s' for '%s'"),
3749 tmp_name
, name
) == -1)
3750 *error_message
= (char *) bfd_errmsg (bfd_error_system_call
);
3757 /* ARM->Thumb glue (static images):
3761 ldr r12, __func_addr
3764 .word func @ behave as if you saw a ARM_32 reloc.
3771 .word func @ behave as if you saw a ARM_32 reloc.
3773 (relocatable images)
3776 ldr r12, __func_offset
3783 #define ARM2THUMB_STATIC_GLUE_SIZE 12
3784 static const insn32 a2t1_ldr_insn
= 0xe59fc000;
3785 static const insn32 a2t2_bx_r12_insn
= 0xe12fff1c;
3786 static const insn32 a2t3_func_addr_insn
= 0x00000001;
3788 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
3789 static const insn32 a2t1v5_ldr_insn
= 0xe51ff004;
3790 static const insn32 a2t2v5_func_addr_insn
= 0x00000001;
3792 #define ARM2THUMB_PIC_GLUE_SIZE 16
3793 static const insn32 a2t1p_ldr_insn
= 0xe59fc004;
3794 static const insn32 a2t2p_add_pc_insn
= 0xe08cc00f;
3795 static const insn32 a2t3p_bx_r12_insn
= 0xe12fff1c;
3797 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
3801 __func_from_thumb: __func_from_thumb:
3803 nop ldr r6, __func_addr
3805 __func_change_to_arm: bx r6
3807 __func_back_to_thumb:
3813 #define THUMB2ARM_GLUE_SIZE 8
3814 static const insn16 t2a1_bx_pc_insn
= 0x4778;
3815 static const insn16 t2a2_noop_insn
= 0x46c0;
3816 static const insn32 t2a3_b_insn
= 0xea000000;
3818 #define VFP11_ERRATUM_VENEER_SIZE 8
3820 #define ARM_BX_VENEER_SIZE 12
3821 static const insn32 armbx1_tst_insn
= 0xe3100001;
3822 static const insn32 armbx2_moveq_insn
= 0x01a0f000;
3823 static const insn32 armbx3_bx_insn
= 0xe12fff10;
3825 #ifndef ELFARM_NABI_C_INCLUDED
3827 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info
* info
)
3831 struct elf32_arm_link_hash_table
* globals
;
3833 globals
= elf32_arm_hash_table (info
);
3835 BFD_ASSERT (globals
!= NULL
);
3837 if (globals
->arm_glue_size
!= 0)
3839 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3841 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
3842 ARM2THUMB_GLUE_SECTION_NAME
);
3844 BFD_ASSERT (s
!= NULL
);
3846 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->arm_glue_size
);
3848 BFD_ASSERT (s
->size
== globals
->arm_glue_size
);
3852 if (globals
->thumb_glue_size
!= 0)
3854 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3856 s
= bfd_get_section_by_name
3857 (globals
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
3859 BFD_ASSERT (s
!= NULL
);
3861 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->thumb_glue_size
);
3863 BFD_ASSERT (s
->size
== globals
->thumb_glue_size
);
3867 if (globals
->vfp11_erratum_glue_size
!= 0)
3869 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3871 s
= bfd_get_section_by_name
3872 (globals
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
3874 BFD_ASSERT (s
!= NULL
);
3876 foo
= bfd_alloc (globals
->bfd_of_glue_owner
,
3877 globals
->vfp11_erratum_glue_size
);
3879 BFD_ASSERT (s
->size
== globals
->vfp11_erratum_glue_size
);
3883 if (globals
->bx_glue_size
!= 0)
3885 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3887 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
3888 ARM_BX_GLUE_SECTION_NAME
);
3890 BFD_ASSERT (s
!= NULL
);
3892 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->bx_glue_size
);
3894 BFD_ASSERT (s
->size
== globals
->bx_glue_size
);
3901 /* Allocate space and symbols for calling a Thumb function from Arm mode.
3902 returns the symbol identifying the stub. */
3904 static struct elf_link_hash_entry
*
3905 record_arm_to_thumb_glue (struct bfd_link_info
* link_info
,
3906 struct elf_link_hash_entry
* h
)
3908 const char * name
= h
->root
.root
.string
;
3911 struct elf_link_hash_entry
* myh
;
3912 struct bfd_link_hash_entry
* bh
;
3913 struct elf32_arm_link_hash_table
* globals
;
3917 globals
= elf32_arm_hash_table (link_info
);
3919 BFD_ASSERT (globals
!= NULL
);
3920 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3922 s
= bfd_get_section_by_name
3923 (globals
->bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
3925 BFD_ASSERT (s
!= NULL
);
3927 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
3929 BFD_ASSERT (tmp_name
);
3931 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
3933 myh
= elf_link_hash_lookup
3934 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3938 /* We've already seen this guy. */
3943 /* The only trick here is using hash_table->arm_glue_size as the value.
3944 Even though the section isn't allocated yet, this is where we will be
3947 val
= globals
->arm_glue_size
+ 1;
3948 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
3949 tmp_name
, BSF_GLOBAL
, s
, val
,
3950 NULL
, TRUE
, FALSE
, &bh
);
3952 myh
= (struct elf_link_hash_entry
*) bh
;
3953 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
3954 myh
->forced_local
= 1;
3958 if (link_info
->shared
|| globals
->root
.is_relocatable_executable
3959 || globals
->pic_veneer
)
3960 size
= ARM2THUMB_PIC_GLUE_SIZE
;
3961 else if (globals
->use_blx
)
3962 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
3964 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
3967 globals
->arm_glue_size
+= size
;
3973 record_thumb_to_arm_glue (struct bfd_link_info
*link_info
,
3974 struct elf_link_hash_entry
*h
)
3976 const char *name
= h
->root
.root
.string
;
3979 struct elf_link_hash_entry
*myh
;
3980 struct bfd_link_hash_entry
*bh
;
3981 struct elf32_arm_link_hash_table
*hash_table
;
3984 hash_table
= elf32_arm_hash_table (link_info
);
3986 BFD_ASSERT (hash_table
!= NULL
);
3987 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
3989 s
= bfd_get_section_by_name
3990 (hash_table
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
3992 BFD_ASSERT (s
!= NULL
);
3994 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
3995 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
3997 BFD_ASSERT (tmp_name
);
3999 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
4001 myh
= elf_link_hash_lookup
4002 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
4006 /* We've already seen this guy. */
4012 val
= hash_table
->thumb_glue_size
+ 1;
4013 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4014 tmp_name
, BSF_GLOBAL
, s
, val
,
4015 NULL
, TRUE
, FALSE
, &bh
);
4017 /* If we mark it 'Thumb', the disassembler will do a better job. */
4018 myh
= (struct elf_link_hash_entry
*) bh
;
4019 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
4020 myh
->forced_local
= 1;
4024 #define CHANGE_TO_ARM "__%s_change_to_arm"
4025 #define BACK_FROM_ARM "__%s_back_from_arm"
4027 /* Allocate another symbol to mark where we switch to Arm mode. */
4028 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
4029 + strlen (CHANGE_TO_ARM
) + 1);
4031 BFD_ASSERT (tmp_name
);
4033 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
4036 val
= hash_table
->thumb_glue_size
+ 4,
4037 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4038 tmp_name
, BSF_LOCAL
, s
, val
,
4039 NULL
, TRUE
, FALSE
, &bh
);
4043 s
->size
+= THUMB2ARM_GLUE_SIZE
;
4044 hash_table
->thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
4050 /* Allocate space for ARMv4 BX veneers. */
4053 record_arm_bx_glue (struct bfd_link_info
* link_info
, int reg
)
4056 struct elf32_arm_link_hash_table
*globals
;
4058 struct elf_link_hash_entry
*myh
;
4059 struct bfd_link_hash_entry
*bh
;
4062 /* BX PC does not need a veneer. */
4066 globals
= elf32_arm_hash_table (link_info
);
4068 BFD_ASSERT (globals
!= NULL
);
4069 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4071 /* Check if this veneer has already been allocated. */
4072 if (globals
->bx_glue_offset
[reg
])
4075 s
= bfd_get_section_by_name
4076 (globals
->bfd_of_glue_owner
, ARM_BX_GLUE_SECTION_NAME
);
4078 BFD_ASSERT (s
!= NULL
);
4080 /* Add symbol for veneer. */
4081 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (ARM_BX_GLUE_ENTRY_NAME
) + 1);
4083 BFD_ASSERT (tmp_name
);
4085 sprintf (tmp_name
, ARM_BX_GLUE_ENTRY_NAME
, reg
);
4087 myh
= elf_link_hash_lookup
4088 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4090 BFD_ASSERT (myh
== NULL
);
4093 val
= globals
->bx_glue_size
;
4094 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
4095 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
4096 NULL
, TRUE
, FALSE
, &bh
);
4098 myh
= (struct elf_link_hash_entry
*) bh
;
4099 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4100 myh
->forced_local
= 1;
4102 s
->size
+= ARM_BX_VENEER_SIZE
;
4103 globals
->bx_glue_offset
[reg
] = globals
->bx_glue_size
| 2;
4104 globals
->bx_glue_size
+= ARM_BX_VENEER_SIZE
;
4108 /* Add an entry to the code/data map for section SEC. */
4111 elf32_arm_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
4113 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
4114 unsigned int newidx
;
4116 if (sec_data
->map
== NULL
)
4118 sec_data
->map
= bfd_malloc (sizeof (elf32_arm_section_map
));
4119 sec_data
->mapcount
= 0;
4120 sec_data
->mapsize
= 1;
4123 newidx
= sec_data
->mapcount
++;
4125 if (sec_data
->mapcount
> sec_data
->mapsize
)
4127 sec_data
->mapsize
*= 2;
4128 sec_data
->map
= bfd_realloc_or_free (sec_data
->map
, sec_data
->mapsize
4129 * sizeof (elf32_arm_section_map
));
4134 sec_data
->map
[newidx
].vma
= vma
;
4135 sec_data
->map
[newidx
].type
= type
;
4140 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
4141 veneers are handled for now. */
4144 record_vfp11_erratum_veneer (struct bfd_link_info
*link_info
,
4145 elf32_vfp11_erratum_list
*branch
,
4147 asection
*branch_sec
,
4148 unsigned int offset
)
4151 struct elf32_arm_link_hash_table
*hash_table
;
4153 struct elf_link_hash_entry
*myh
;
4154 struct bfd_link_hash_entry
*bh
;
4156 struct _arm_elf_section_data
*sec_data
;
4158 elf32_vfp11_erratum_list
*newerr
;
4160 hash_table
= elf32_arm_hash_table (link_info
);
4162 BFD_ASSERT (hash_table
!= NULL
);
4163 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
4165 s
= bfd_get_section_by_name
4166 (hash_table
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
4168 sec_data
= elf32_arm_section_data (s
);
4170 BFD_ASSERT (s
!= NULL
);
4172 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
4173 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
4175 BFD_ASSERT (tmp_name
);
4177 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
4178 hash_table
->num_vfp11_fixes
);
4180 myh
= elf_link_hash_lookup
4181 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4183 BFD_ASSERT (myh
== NULL
);
4186 val
= hash_table
->vfp11_erratum_glue_size
;
4187 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4188 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
4189 NULL
, TRUE
, FALSE
, &bh
);
4191 myh
= (struct elf_link_hash_entry
*) bh
;
4192 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4193 myh
->forced_local
= 1;
4195 /* Link veneer back to calling location. */
4196 errcount
= ++(sec_data
->erratumcount
);
4197 newerr
= bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
4199 newerr
->type
= VFP11_ERRATUM_ARM_VENEER
;
4201 newerr
->u
.v
.branch
= branch
;
4202 newerr
->u
.v
.id
= hash_table
->num_vfp11_fixes
;
4203 branch
->u
.b
.veneer
= newerr
;
4205 newerr
->next
= sec_data
->erratumlist
;
4206 sec_data
->erratumlist
= newerr
;
4208 /* A symbol for the return from the veneer. */
4209 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
4210 hash_table
->num_vfp11_fixes
);
4212 myh
= elf_link_hash_lookup
4213 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4220 _bfd_generic_link_add_one_symbol (link_info
, branch_bfd
, tmp_name
, BSF_LOCAL
,
4221 branch_sec
, val
, NULL
, TRUE
, FALSE
, &bh
);
4223 myh
= (struct elf_link_hash_entry
*) bh
;
4224 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4225 myh
->forced_local
= 1;
4229 /* Generate a mapping symbol for the veneer section, and explicitly add an
4230 entry for that symbol to the code/data map for the section. */
4231 if (hash_table
->vfp11_erratum_glue_size
== 0)
4234 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
4235 ever requires this erratum fix. */
4236 _bfd_generic_link_add_one_symbol (link_info
,
4237 hash_table
->bfd_of_glue_owner
, "$a",
4238 BSF_LOCAL
, s
, 0, NULL
,
4241 myh
= (struct elf_link_hash_entry
*) bh
;
4242 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
4243 myh
->forced_local
= 1;
4245 /* The elf32_arm_init_maps function only cares about symbols from input
4246 BFDs. We must make a note of this generated mapping symbol
4247 ourselves so that code byteswapping works properly in
4248 elf32_arm_write_section. */
4249 elf32_arm_section_map_add (s
, 'a', 0);
4252 s
->size
+= VFP11_ERRATUM_VENEER_SIZE
;
4253 hash_table
->vfp11_erratum_glue_size
+= VFP11_ERRATUM_VENEER_SIZE
;
4254 hash_table
->num_vfp11_fixes
++;
4256 /* The offset of the veneer. */
4260 /* Add the glue sections to ABFD. This function is called from the
4261 linker scripts in ld/emultempl/{armelf}.em. */
4264 bfd_elf32_arm_add_glue_sections_to_bfd (bfd
*abfd
,
4265 struct bfd_link_info
*info
)
4270 /* If we are only performing a partial
4271 link do not bother adding the glue. */
4272 if (info
->relocatable
)
4275 /* linker stubs don't need glue */
4276 if (!strcmp (abfd
->filename
, "linker stubs"))
4279 sec
= bfd_get_section_by_name (abfd
, ARM2THUMB_GLUE_SECTION_NAME
);
4283 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
4284 will prevent elf_link_input_bfd() from processing the contents
4286 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4287 | SEC_CODE
| SEC_READONLY
);
4289 sec
= bfd_make_section_with_flags (abfd
,
4290 ARM2THUMB_GLUE_SECTION_NAME
,
4294 || !bfd_set_section_alignment (abfd
, sec
, 2))
4297 /* Set the gc mark to prevent the section from being removed by garbage
4298 collection, despite the fact that no relocs refer to this section. */
4302 sec
= bfd_get_section_by_name (abfd
, THUMB2ARM_GLUE_SECTION_NAME
);
4306 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4307 | SEC_CODE
| SEC_READONLY
);
4309 sec
= bfd_make_section_with_flags (abfd
,
4310 THUMB2ARM_GLUE_SECTION_NAME
,
4314 || !bfd_set_section_alignment (abfd
, sec
, 2))
4320 sec
= bfd_get_section_by_name (abfd
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
4324 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4325 | SEC_CODE
| SEC_READONLY
);
4327 sec
= bfd_make_section_with_flags (abfd
,
4328 VFP11_ERRATUM_VENEER_SECTION_NAME
,
4332 || !bfd_set_section_alignment (abfd
, sec
, 2))
4338 sec
= bfd_get_section_by_name (abfd
, ARM_BX_GLUE_SECTION_NAME
);
4342 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4343 | SEC_CODE
| SEC_READONLY
);
4345 sec
= bfd_make_section_with_flags (abfd
,
4346 ARM_BX_GLUE_SECTION_NAME
,
4350 || !bfd_set_section_alignment (abfd
, sec
, 2))
4359 /* Select a BFD to be used to hold the sections used by the glue code.
4360 This function is called from the linker scripts in ld/emultempl/
4364 bfd_elf32_arm_get_bfd_for_interworking (bfd
*abfd
, struct bfd_link_info
*info
)
4366 struct elf32_arm_link_hash_table
*globals
;
4368 /* If we are only performing a partial link
4369 do not bother getting a bfd to hold the glue. */
4370 if (info
->relocatable
)
4373 /* Make sure we don't attach the glue sections to a dynamic object. */
4374 BFD_ASSERT (!(abfd
->flags
& DYNAMIC
));
4376 globals
= elf32_arm_hash_table (info
);
4378 BFD_ASSERT (globals
!= NULL
);
4380 if (globals
->bfd_of_glue_owner
!= NULL
)
4383 /* Save the bfd for later use. */
4384 globals
->bfd_of_glue_owner
= abfd
;
4390 check_use_blx (struct elf32_arm_link_hash_table
*globals
)
4392 if (bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
4394 globals
->use_blx
= 1;
4398 bfd_elf32_arm_process_before_allocation (bfd
*abfd
,
4399 struct bfd_link_info
*link_info
)
4401 Elf_Internal_Shdr
*symtab_hdr
;
4402 Elf_Internal_Rela
*internal_relocs
= NULL
;
4403 Elf_Internal_Rela
*irel
, *irelend
;
4404 bfd_byte
*contents
= NULL
;
4407 struct elf32_arm_link_hash_table
*globals
;
4409 /* If we are only performing a partial link do not bother
4410 to construct any glue. */
4411 if (link_info
->relocatable
)
4414 /* Here we have a bfd that is to be included on the link. We have a
4415 hook to do reloc rummaging, before section sizes are nailed down. */
4416 globals
= elf32_arm_hash_table (link_info
);
4418 BFD_ASSERT (globals
!= NULL
);
4420 check_use_blx (globals
);
4422 if (globals
->byteswap_code
&& !bfd_big_endian (abfd
))
4424 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
4429 /* PR 5398: If we have not decided to include any loadable sections in
4430 the output then we will not have a glue owner bfd. This is OK, it
4431 just means that there is nothing else for us to do here. */
4432 if (globals
->bfd_of_glue_owner
== NULL
)
4435 /* Rummage around all the relocs and map the glue vectors. */
4436 sec
= abfd
->sections
;
4441 for (; sec
!= NULL
; sec
= sec
->next
)
4443 if (sec
->reloc_count
== 0)
4446 if ((sec
->flags
& SEC_EXCLUDE
) != 0)
4449 symtab_hdr
= & elf_symtab_hdr (abfd
);
4451 /* Load the relocs. */
4453 = _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
, FALSE
);
4455 if (internal_relocs
== NULL
)
4458 irelend
= internal_relocs
+ sec
->reloc_count
;
4459 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
4462 unsigned long r_index
;
4464 struct elf_link_hash_entry
*h
;
4466 r_type
= ELF32_R_TYPE (irel
->r_info
);
4467 r_index
= ELF32_R_SYM (irel
->r_info
);
4469 /* These are the only relocation types we care about. */
4470 if ( r_type
!= R_ARM_PC24
4471 && r_type
!= R_ARM_PLT32
4472 && r_type
!= R_ARM_JUMP24
4473 && r_type
!= R_ARM_THM_JUMP24
4474 && (r_type
!= R_ARM_V4BX
|| globals
->fix_v4bx
< 2))
4477 /* Get the section contents if we haven't done so already. */
4478 if (contents
== NULL
)
4480 /* Get cached copy if it exists. */
4481 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
4482 contents
= elf_section_data (sec
)->this_hdr
.contents
;
4485 /* Go get them off disk. */
4486 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
4491 if (r_type
== R_ARM_V4BX
)
4495 reg
= bfd_get_32 (abfd
, contents
+ irel
->r_offset
) & 0xf;
4496 record_arm_bx_glue (link_info
, reg
);
4500 /* If the relocation is not against a symbol it cannot concern us. */
4503 /* We don't care about local symbols. */
4504 if (r_index
< symtab_hdr
->sh_info
)
4507 /* This is an external symbol. */
4508 r_index
-= symtab_hdr
->sh_info
;
4509 h
= (struct elf_link_hash_entry
*)
4510 elf_sym_hashes (abfd
)[r_index
];
4512 /* If the relocation is against a static symbol it must be within
4513 the current section and so cannot be a cross ARM/Thumb relocation. */
4517 /* If the call will go through a PLT entry then we do not need
4519 if (globals
->splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
4527 /* This one is a call from arm code. We need to look up
4528 the target of the call. If it is a thumb target, we
4530 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
4531 && !(r_type
== R_ARM_CALL
&& globals
->use_blx
))
4532 record_arm_to_thumb_glue (link_info
, h
);
4535 case R_ARM_THM_JUMP24
:
4536 /* This one is a call from thumb code. We look
4537 up the target of the call. If it is not a thumb
4538 target, we insert glue. */
4539 if (ELF_ST_TYPE (h
->type
) != STT_ARM_TFUNC
4540 && !(globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
4541 && h
->root
.type
!= bfd_link_hash_undefweak
)
4542 record_thumb_to_arm_glue (link_info
, h
);
4550 if (contents
!= NULL
4551 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
4555 if (internal_relocs
!= NULL
4556 && elf_section_data (sec
)->relocs
!= internal_relocs
)
4557 free (internal_relocs
);
4558 internal_relocs
= NULL
;
4564 if (contents
!= NULL
4565 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
4567 if (internal_relocs
!= NULL
4568 && elf_section_data (sec
)->relocs
!= internal_relocs
)
4569 free (internal_relocs
);
4576 /* Initialise maps of ARM/Thumb/data for input BFDs. */
4579 bfd_elf32_arm_init_maps (bfd
*abfd
)
4581 Elf_Internal_Sym
*isymbuf
;
4582 Elf_Internal_Shdr
*hdr
;
4583 unsigned int i
, localsyms
;
4585 if ((abfd
->flags
& DYNAMIC
) != 0)
4588 hdr
= & elf_symtab_hdr (abfd
);
4589 localsyms
= hdr
->sh_info
;
4591 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4592 should contain the number of local symbols, which should come before any
4593 global symbols. Mapping symbols are always local. */
4594 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
,
4597 /* No internal symbols read? Skip this BFD. */
4598 if (isymbuf
== NULL
)
4601 for (i
= 0; i
< localsyms
; i
++)
4603 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
4604 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4608 && ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
4610 name
= bfd_elf_string_from_elf_section (abfd
,
4611 hdr
->sh_link
, isym
->st_name
);
4613 if (bfd_is_arm_special_symbol_name (name
,
4614 BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
4615 elf32_arm_section_map_add (sec
, name
[1], isym
->st_value
);
4622 bfd_elf32_arm_set_vfp11_fix (bfd
*obfd
, struct bfd_link_info
*link_info
)
4624 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
4625 obj_attribute
*out_attr
= elf_known_obj_attributes_proc (obfd
);
4627 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
4628 if (out_attr
[Tag_CPU_arch
].i
>= TAG_CPU_ARCH_V7
)
4630 switch (globals
->vfp11_fix
)
4632 case BFD_ARM_VFP11_FIX_DEFAULT
:
4633 case BFD_ARM_VFP11_FIX_NONE
:
4634 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
4638 /* Give a warning, but do as the user requests anyway. */
4639 (*_bfd_error_handler
) (_("%B: warning: selected VFP11 erratum "
4640 "workaround is not necessary for target architecture"), obfd
);
4643 else if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_DEFAULT
)
4644 /* For earlier architectures, we might need the workaround, but do not
4645 enable it by default. If users is running with broken hardware, they
4646 must enable the erratum fix explicitly. */
4647 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
4651 enum bfd_arm_vfp11_pipe
4659 /* Return a VFP register number. This is encoded as RX:X for single-precision
4660 registers, or X:RX for double-precision registers, where RX is the group of
4661 four bits in the instruction encoding and X is the single extension bit.
4662 RX and X fields are specified using their lowest (starting) bit. The return
4665 0...31: single-precision registers s0...s31
4666 32...63: double-precision registers d0...d31.
4668 Although X should be zero for VFP11 (encoding d0...d15 only), we might
4669 encounter VFP3 instructions, so we allow the full range for DP registers. */
4672 bfd_arm_vfp11_regno (unsigned int insn
, bfd_boolean is_double
, unsigned int rx
,
4676 return (((insn
>> rx
) & 0xf) | (((insn
>> x
) & 1) << 4)) + 32;
4678 return (((insn
>> rx
) & 0xf) << 1) | ((insn
>> x
) & 1);
4681 /* Set bits in *WMASK according to a register number REG as encoded by
4682 bfd_arm_vfp11_regno(). Ignore d16-d31. */
4685 bfd_arm_vfp11_write_mask (unsigned int *wmask
, unsigned int reg
)
4690 *wmask
|= 3 << ((reg
- 32) * 2);
4693 /* Return TRUE if WMASK overwrites anything in REGS. */
4696 bfd_arm_vfp11_antidependency (unsigned int wmask
, int *regs
, int numregs
)
4700 for (i
= 0; i
< numregs
; i
++)
4702 unsigned int reg
= regs
[i
];
4704 if (reg
< 32 && (wmask
& (1 << reg
)) != 0)
4712 if ((wmask
& (3 << (reg
* 2))) != 0)
4719 /* In this function, we're interested in two things: finding input registers
4720 for VFP data-processing instructions, and finding the set of registers which
4721 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
4722 hold the written set, so FLDM etc. are easy to deal with (we're only
4723 interested in 32 SP registers or 16 dp registers, due to the VFP version
4724 implemented by the chip in question). DP registers are marked by setting
4725 both SP registers in the write mask). */
4727 static enum bfd_arm_vfp11_pipe
4728 bfd_arm_vfp11_insn_decode (unsigned int insn
, unsigned int *destmask
, int *regs
,
4731 enum bfd_arm_vfp11_pipe pipe
= VFP11_BAD
;
4732 bfd_boolean is_double
= ((insn
& 0xf00) == 0xb00) ? 1 : 0;
4734 if ((insn
& 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
4737 unsigned int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
4738 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
4740 pqrs
= ((insn
& 0x00800000) >> 20)
4741 | ((insn
& 0x00300000) >> 19)
4742 | ((insn
& 0x00000040) >> 6);
4746 case 0: /* fmac[sd]. */
4747 case 1: /* fnmac[sd]. */
4748 case 2: /* fmsc[sd]. */
4749 case 3: /* fnmsc[sd]. */
4751 bfd_arm_vfp11_write_mask (destmask
, fd
);
4753 regs
[1] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
4758 case 4: /* fmul[sd]. */
4759 case 5: /* fnmul[sd]. */
4760 case 6: /* fadd[sd]. */
4761 case 7: /* fsub[sd]. */
4765 case 8: /* fdiv[sd]. */
4768 bfd_arm_vfp11_write_mask (destmask
, fd
);
4769 regs
[0] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
4774 case 15: /* extended opcode. */
4776 unsigned int extn
= ((insn
>> 15) & 0x1e)
4777 | ((insn
>> 7) & 1);
4781 case 0: /* fcpy[sd]. */
4782 case 1: /* fabs[sd]. */
4783 case 2: /* fneg[sd]. */
4784 case 8: /* fcmp[sd]. */
4785 case 9: /* fcmpe[sd]. */
4786 case 10: /* fcmpz[sd]. */
4787 case 11: /* fcmpez[sd]. */
4788 case 16: /* fuito[sd]. */
4789 case 17: /* fsito[sd]. */
4790 case 24: /* ftoui[sd]. */
4791 case 25: /* ftouiz[sd]. */
4792 case 26: /* ftosi[sd]. */
4793 case 27: /* ftosiz[sd]. */
4794 /* These instructions will not bounce due to underflow. */
4799 case 3: /* fsqrt[sd]. */
4800 /* fsqrt cannot underflow, but it can (perhaps) overwrite
4801 registers to cause the erratum in previous instructions. */
4802 bfd_arm_vfp11_write_mask (destmask
, fd
);
4806 case 15: /* fcvt{ds,sd}. */
4810 bfd_arm_vfp11_write_mask (destmask
, fd
);
4812 /* Only FCVTSD can underflow. */
4813 if ((insn
& 0x100) != 0)
4832 /* Two-register transfer. */
4833 else if ((insn
& 0x0fe00ed0) == 0x0c400a10)
4835 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
4837 if ((insn
& 0x100000) == 0)
4840 bfd_arm_vfp11_write_mask (destmask
, fm
);
4843 bfd_arm_vfp11_write_mask (destmask
, fm
);
4844 bfd_arm_vfp11_write_mask (destmask
, fm
+ 1);
4850 else if ((insn
& 0x0e100e00) == 0x0c100a00) /* A load insn. */
4852 int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
4853 unsigned int puw
= ((insn
>> 21) & 0x1) | (((insn
>> 23) & 3) << 1);
4857 case 0: /* Two-reg transfer. We should catch these above. */
4860 case 2: /* fldm[sdx]. */
4864 unsigned int i
, offset
= insn
& 0xff;
4869 for (i
= fd
; i
< fd
+ offset
; i
++)
4870 bfd_arm_vfp11_write_mask (destmask
, i
);
4874 case 4: /* fld[sd]. */
4876 bfd_arm_vfp11_write_mask (destmask
, fd
);
4885 /* Single-register transfer. Note L==0. */
4886 else if ((insn
& 0x0f100e10) == 0x0e000a10)
4888 unsigned int opcode
= (insn
>> 21) & 7;
4889 unsigned int fn
= bfd_arm_vfp11_regno (insn
, is_double
, 16, 7);
4893 case 0: /* fmsr/fmdlr. */
4894 case 1: /* fmdhr. */
4895 /* Mark fmdhr and fmdlr as writing to the whole of the DP
4896 destination register. I don't know if this is exactly right,
4897 but it is the conservative choice. */
4898 bfd_arm_vfp11_write_mask (destmask
, fn
);
4912 static int elf32_arm_compare_mapping (const void * a
, const void * b
);
4915 /* Look for potentially-troublesome code sequences which might trigger the
4916 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
4917 (available from ARM) for details of the erratum. A short version is
4918 described in ld.texinfo. */
4921 bfd_elf32_arm_vfp11_erratum_scan (bfd
*abfd
, struct bfd_link_info
*link_info
)
4924 bfd_byte
*contents
= NULL
;
4926 int regs
[3], numregs
= 0;
4927 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
4928 int use_vector
= (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_VECTOR
);
4930 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
4931 The states transition as follows:
4933 0 -> 1 (vector) or 0 -> 2 (scalar)
4934 A VFP FMAC-pipeline instruction has been seen. Fill
4935 regs[0]..regs[numregs-1] with its input operands. Remember this
4936 instruction in 'first_fmac'.
4939 Any instruction, except for a VFP instruction which overwrites
4944 A VFP instruction has been seen which overwrites any of regs[*].
4945 We must make a veneer! Reset state to 0 before examining next
4949 If we fail to match anything in state 2, reset to state 0 and reset
4950 the instruction pointer to the instruction after 'first_fmac'.
4952 If the VFP11 vector mode is in use, there must be at least two unrelated
4953 instructions between anti-dependent VFP11 instructions to properly avoid
4954 triggering the erratum, hence the use of the extra state 1. */
4956 /* If we are only performing a partial link do not bother
4957 to construct any glue. */
4958 if (link_info
->relocatable
)
4961 /* Skip if this bfd does not correspond to an ELF image. */
4962 if (! is_arm_elf (abfd
))
4965 /* We should have chosen a fix type by the time we get here. */
4966 BFD_ASSERT (globals
->vfp11_fix
!= BFD_ARM_VFP11_FIX_DEFAULT
);
4968 if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_NONE
)
4971 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4973 unsigned int i
, span
, first_fmac
= 0, veneer_of_insn
= 0;
4974 struct _arm_elf_section_data
*sec_data
;
4976 /* If we don't have executable progbits, we're not interested in this
4977 section. Also skip if section is to be excluded. */
4978 if (elf_section_type (sec
) != SHT_PROGBITS
4979 || (elf_section_flags (sec
) & SHF_EXECINSTR
) == 0
4980 || (sec
->flags
& SEC_EXCLUDE
) != 0
4981 || strcmp (sec
->name
, VFP11_ERRATUM_VENEER_SECTION_NAME
) == 0)
4984 sec_data
= elf32_arm_section_data (sec
);
4986 if (sec_data
->mapcount
== 0)
4989 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
4990 contents
= elf_section_data (sec
)->this_hdr
.contents
;
4991 else if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
4994 qsort (sec_data
->map
, sec_data
->mapcount
, sizeof (elf32_arm_section_map
),
4995 elf32_arm_compare_mapping
);
4997 for (span
= 0; span
< sec_data
->mapcount
; span
++)
4999 unsigned int span_start
= sec_data
->map
[span
].vma
;
5000 unsigned int span_end
= (span
== sec_data
->mapcount
- 1)
5001 ? sec
->size
: sec_data
->map
[span
+ 1].vma
;
5002 char span_type
= sec_data
->map
[span
].type
;
5004 /* FIXME: Only ARM mode is supported at present. We may need to
5005 support Thumb-2 mode also at some point. */
5006 if (span_type
!= 'a')
5009 for (i
= span_start
; i
< span_end
;)
5011 unsigned int next_i
= i
+ 4;
5012 unsigned int insn
= bfd_big_endian (abfd
)
5013 ? (contents
[i
] << 24)
5014 | (contents
[i
+ 1] << 16)
5015 | (contents
[i
+ 2] << 8)
5017 : (contents
[i
+ 3] << 24)
5018 | (contents
[i
+ 2] << 16)
5019 | (contents
[i
+ 1] << 8)
5021 unsigned int writemask
= 0;
5022 enum bfd_arm_vfp11_pipe pipe
;
5027 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
, regs
,
5029 /* I'm assuming the VFP11 erratum can trigger with denorm
5030 operands on either the FMAC or the DS pipeline. This might
5031 lead to slightly overenthusiastic veneer insertion. */
5032 if (pipe
== VFP11_FMAC
|| pipe
== VFP11_DS
)
5034 state
= use_vector
? 1 : 2;
5036 veneer_of_insn
= insn
;
5042 int other_regs
[3], other_numregs
;
5043 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
5046 if (pipe
!= VFP11_BAD
5047 && bfd_arm_vfp11_antidependency (writemask
, regs
,
5057 int other_regs
[3], other_numregs
;
5058 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
5061 if (pipe
!= VFP11_BAD
5062 && bfd_arm_vfp11_antidependency (writemask
, regs
,
5068 next_i
= first_fmac
+ 4;
5074 abort (); /* Should be unreachable. */
5079 elf32_vfp11_erratum_list
*newerr
5080 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
5083 errcount
= ++(elf32_arm_section_data (sec
)->erratumcount
);
5085 newerr
->u
.b
.vfp_insn
= veneer_of_insn
;
5090 newerr
->type
= VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
;
5097 record_vfp11_erratum_veneer (link_info
, newerr
, abfd
, sec
,
5102 newerr
->next
= sec_data
->erratumlist
;
5103 sec_data
->erratumlist
= newerr
;
5112 if (contents
!= NULL
5113 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
5121 if (contents
!= NULL
5122 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
5128 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
5129 after sections have been laid out, using specially-named symbols. */
5132 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd
*abfd
,
5133 struct bfd_link_info
*link_info
)
5136 struct elf32_arm_link_hash_table
*globals
;
5139 if (link_info
->relocatable
)
5142 /* Skip if this bfd does not correspond to an ELF image. */
5143 if (! is_arm_elf (abfd
))
5146 globals
= elf32_arm_hash_table (link_info
);
5148 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
5149 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
5151 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5153 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
5154 elf32_vfp11_erratum_list
*errnode
= sec_data
->erratumlist
;
5156 for (; errnode
!= NULL
; errnode
= errnode
->next
)
5158 struct elf_link_hash_entry
*myh
;
5161 switch (errnode
->type
)
5163 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
5164 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
:
5165 /* Find veneer symbol. */
5166 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
5167 errnode
->u
.b
.veneer
->u
.v
.id
);
5169 myh
= elf_link_hash_lookup
5170 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
5173 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
5174 "`%s'"), abfd
, tmp_name
);
5176 vma
= myh
->root
.u
.def
.section
->output_section
->vma
5177 + myh
->root
.u
.def
.section
->output_offset
5178 + myh
->root
.u
.def
.value
;
5180 errnode
->u
.b
.veneer
->vma
= vma
;
5183 case VFP11_ERRATUM_ARM_VENEER
:
5184 case VFP11_ERRATUM_THUMB_VENEER
:
5185 /* Find return location. */
5186 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
5189 myh
= elf_link_hash_lookup
5190 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
5193 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
5194 "`%s'"), abfd
, tmp_name
);
5196 vma
= myh
->root
.u
.def
.section
->output_section
->vma
5197 + myh
->root
.u
.def
.section
->output_offset
5198 + myh
->root
.u
.def
.value
;
5200 errnode
->u
.v
.branch
->vma
= vma
;
5213 /* Set target relocation values needed during linking. */
5216 bfd_elf32_arm_set_target_relocs (struct bfd
*output_bfd
,
5217 struct bfd_link_info
*link_info
,
5219 char * target2_type
,
5222 bfd_arm_vfp11_fix vfp11_fix
,
5223 int no_enum_warn
, int pic_veneer
)
5225 struct elf32_arm_link_hash_table
*globals
;
5227 globals
= elf32_arm_hash_table (link_info
);
5229 globals
->target1_is_rel
= target1_is_rel
;
5230 if (strcmp (target2_type
, "rel") == 0)
5231 globals
->target2_reloc
= R_ARM_REL32
;
5232 else if (strcmp (target2_type
, "abs") == 0)
5233 globals
->target2_reloc
= R_ARM_ABS32
;
5234 else if (strcmp (target2_type
, "got-rel") == 0)
5235 globals
->target2_reloc
= R_ARM_GOT_PREL
;
5238 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
5241 globals
->fix_v4bx
= fix_v4bx
;
5242 globals
->use_blx
|= use_blx
;
5243 globals
->vfp11_fix
= vfp11_fix
;
5244 globals
->pic_veneer
= pic_veneer
;
5246 BFD_ASSERT (is_arm_elf (output_bfd
));
5247 elf_arm_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
5250 /* Replace the target offset of a Thumb bl or b.w instruction. */
5253 insert_thumb_branch (bfd
*abfd
, long int offset
, bfd_byte
*insn
)
5259 BFD_ASSERT ((offset
& 1) == 0);
5261 upper
= bfd_get_16 (abfd
, insn
);
5262 lower
= bfd_get_16 (abfd
, insn
+ 2);
5263 reloc_sign
= (offset
< 0) ? 1 : 0;
5264 upper
= (upper
& ~(bfd_vma
) 0x7ff)
5265 | ((offset
>> 12) & 0x3ff)
5266 | (reloc_sign
<< 10);
5267 lower
= (lower
& ~(bfd_vma
) 0x2fff)
5268 | (((!((offset
>> 23) & 1)) ^ reloc_sign
) << 13)
5269 | (((!((offset
>> 22) & 1)) ^ reloc_sign
) << 11)
5270 | ((offset
>> 1) & 0x7ff);
5271 bfd_put_16 (abfd
, upper
, insn
);
5272 bfd_put_16 (abfd
, lower
, insn
+ 2);
5275 /* Thumb code calling an ARM function. */
5278 elf32_thumb_to_arm_stub (struct bfd_link_info
* info
,
5282 asection
* input_section
,
5283 bfd_byte
* hit_data
,
5286 bfd_signed_vma addend
,
5288 char **error_message
)
5292 long int ret_offset
;
5293 struct elf_link_hash_entry
* myh
;
5294 struct elf32_arm_link_hash_table
* globals
;
5296 myh
= find_thumb_glue (info
, name
, error_message
);
5300 globals
= elf32_arm_hash_table (info
);
5302 BFD_ASSERT (globals
!= NULL
);
5303 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5305 my_offset
= myh
->root
.u
.def
.value
;
5307 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5308 THUMB2ARM_GLUE_SECTION_NAME
);
5310 BFD_ASSERT (s
!= NULL
);
5311 BFD_ASSERT (s
->contents
!= NULL
);
5312 BFD_ASSERT (s
->output_section
!= NULL
);
5314 if ((my_offset
& 0x01) == 0x01)
5317 && sym_sec
->owner
!= NULL
5318 && !INTERWORK_FLAG (sym_sec
->owner
))
5320 (*_bfd_error_handler
)
5321 (_("%B(%s): warning: interworking not enabled.\n"
5322 " first occurrence: %B: thumb call to arm"),
5323 sym_sec
->owner
, input_bfd
, name
);
5329 myh
->root
.u
.def
.value
= my_offset
;
5331 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a1_bx_pc_insn
,
5332 s
->contents
+ my_offset
);
5334 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a2_noop_insn
,
5335 s
->contents
+ my_offset
+ 2);
5338 /* Address of destination of the stub. */
5339 ((bfd_signed_vma
) val
)
5341 /* Offset from the start of the current section
5342 to the start of the stubs. */
5344 /* Offset of the start of this stub from the start of the stubs. */
5346 /* Address of the start of the current section. */
5347 + s
->output_section
->vma
)
5348 /* The branch instruction is 4 bytes into the stub. */
5350 /* ARM branches work from the pc of the instruction + 8. */
5353 put_arm_insn (globals
, output_bfd
,
5354 (bfd_vma
) t2a3_b_insn
| ((ret_offset
>> 2) & 0x00FFFFFF),
5355 s
->contents
+ my_offset
+ 4);
5358 BFD_ASSERT (my_offset
<= globals
->thumb_glue_size
);
5360 /* Now go back and fix up the original BL insn to point to here. */
5362 /* Address of where the stub is located. */
5363 (s
->output_section
->vma
+ s
->output_offset
+ my_offset
)
5364 /* Address of where the BL is located. */
5365 - (input_section
->output_section
->vma
+ input_section
->output_offset
5367 /* Addend in the relocation. */
5369 /* Biassing for PC-relative addressing. */
5372 insert_thumb_branch (input_bfd
, ret_offset
, hit_data
- input_section
->vma
);
5377 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
5379 static struct elf_link_hash_entry
*
5380 elf32_arm_create_thumb_stub (struct bfd_link_info
* info
,
5387 char **error_message
)
5390 long int ret_offset
;
5391 struct elf_link_hash_entry
* myh
;
5392 struct elf32_arm_link_hash_table
* globals
;
5394 myh
= find_arm_glue (info
, name
, error_message
);
5398 globals
= elf32_arm_hash_table (info
);
5400 BFD_ASSERT (globals
!= NULL
);
5401 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5403 my_offset
= myh
->root
.u
.def
.value
;
5405 if ((my_offset
& 0x01) == 0x01)
5408 && sym_sec
->owner
!= NULL
5409 && !INTERWORK_FLAG (sym_sec
->owner
))
5411 (*_bfd_error_handler
)
5412 (_("%B(%s): warning: interworking not enabled.\n"
5413 " first occurrence: %B: arm call to thumb"),
5414 sym_sec
->owner
, input_bfd
, name
);
5418 myh
->root
.u
.def
.value
= my_offset
;
5420 if (info
->shared
|| globals
->root
.is_relocatable_executable
5421 || globals
->pic_veneer
)
5423 /* For relocatable objects we can't use absolute addresses,
5424 so construct the address from a relative offset. */
5425 /* TODO: If the offset is small it's probably worth
5426 constructing the address with adds. */
5427 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1p_ldr_insn
,
5428 s
->contents
+ my_offset
);
5429 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2p_add_pc_insn
,
5430 s
->contents
+ my_offset
+ 4);
5431 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t3p_bx_r12_insn
,
5432 s
->contents
+ my_offset
+ 8);
5433 /* Adjust the offset by 4 for the position of the add,
5434 and 8 for the pipeline offset. */
5435 ret_offset
= (val
- (s
->output_offset
5436 + s
->output_section
->vma
5439 bfd_put_32 (output_bfd
, ret_offset
,
5440 s
->contents
+ my_offset
+ 12);
5442 else if (globals
->use_blx
)
5444 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1v5_ldr_insn
,
5445 s
->contents
+ my_offset
);
5447 /* It's a thumb address. Add the low order bit. */
5448 bfd_put_32 (output_bfd
, val
| a2t2v5_func_addr_insn
,
5449 s
->contents
+ my_offset
+ 4);
5453 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1_ldr_insn
,
5454 s
->contents
+ my_offset
);
5456 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2_bx_r12_insn
,
5457 s
->contents
+ my_offset
+ 4);
5459 /* It's a thumb address. Add the low order bit. */
5460 bfd_put_32 (output_bfd
, val
| a2t3_func_addr_insn
,
5461 s
->contents
+ my_offset
+ 8);
5465 BFD_ASSERT (my_offset
<= globals
->arm_glue_size
);
5470 /* Arm code calling a Thumb function. */
5473 elf32_arm_to_thumb_stub (struct bfd_link_info
* info
,
5477 asection
* input_section
,
5478 bfd_byte
* hit_data
,
5481 bfd_signed_vma addend
,
5483 char **error_message
)
5485 unsigned long int tmp
;
5488 long int ret_offset
;
5489 struct elf_link_hash_entry
* myh
;
5490 struct elf32_arm_link_hash_table
* globals
;
5492 globals
= elf32_arm_hash_table (info
);
5494 BFD_ASSERT (globals
!= NULL
);
5495 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5497 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5498 ARM2THUMB_GLUE_SECTION_NAME
);
5499 BFD_ASSERT (s
!= NULL
);
5500 BFD_ASSERT (s
->contents
!= NULL
);
5501 BFD_ASSERT (s
->output_section
!= NULL
);
5503 myh
= elf32_arm_create_thumb_stub (info
, name
, input_bfd
, output_bfd
,
5504 sym_sec
, val
, s
, error_message
);
5508 my_offset
= myh
->root
.u
.def
.value
;
5509 tmp
= bfd_get_32 (input_bfd
, hit_data
);
5510 tmp
= tmp
& 0xFF000000;
5512 /* Somehow these are both 4 too far, so subtract 8. */
5513 ret_offset
= (s
->output_offset
5515 + s
->output_section
->vma
5516 - (input_section
->output_offset
5517 + input_section
->output_section
->vma
5521 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
5523 bfd_put_32 (output_bfd
, (bfd_vma
) tmp
, hit_data
- input_section
->vma
);
5528 /* Populate Arm stub for an exported Thumb function. */
5531 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry
*h
, void * inf
)
5533 struct bfd_link_info
* info
= (struct bfd_link_info
*) inf
;
5535 struct elf_link_hash_entry
* myh
;
5536 struct elf32_arm_link_hash_entry
*eh
;
5537 struct elf32_arm_link_hash_table
* globals
;
5540 char *error_message
;
5542 eh
= elf32_arm_hash_entry (h
);
5543 /* Allocate stubs for exported Thumb functions on v4t. */
5544 if (eh
->export_glue
== NULL
)
5547 globals
= elf32_arm_hash_table (info
);
5549 BFD_ASSERT (globals
!= NULL
);
5550 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5552 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5553 ARM2THUMB_GLUE_SECTION_NAME
);
5554 BFD_ASSERT (s
!= NULL
);
5555 BFD_ASSERT (s
->contents
!= NULL
);
5556 BFD_ASSERT (s
->output_section
!= NULL
);
5558 sec
= eh
->export_glue
->root
.u
.def
.section
;
5560 BFD_ASSERT (sec
->output_section
!= NULL
);
5562 val
= eh
->export_glue
->root
.u
.def
.value
+ sec
->output_offset
5563 + sec
->output_section
->vma
;
5564 myh
= elf32_arm_create_thumb_stub (info
, h
->root
.root
.string
,
5565 h
->root
.u
.def
.section
->owner
,
5566 globals
->obfd
, sec
, val
, s
,
5572 /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
5575 elf32_arm_bx_glue (struct bfd_link_info
* info
, int reg
)
5580 struct elf32_arm_link_hash_table
*globals
;
5582 globals
= elf32_arm_hash_table (info
);
5584 BFD_ASSERT (globals
!= NULL
);
5585 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5587 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5588 ARM_BX_GLUE_SECTION_NAME
);
5589 BFD_ASSERT (s
!= NULL
);
5590 BFD_ASSERT (s
->contents
!= NULL
);
5591 BFD_ASSERT (s
->output_section
!= NULL
);
5593 BFD_ASSERT (globals
->bx_glue_offset
[reg
] & 2);
5595 glue_addr
= globals
->bx_glue_offset
[reg
] & ~(bfd_vma
)3;
5597 if ((globals
->bx_glue_offset
[reg
] & 1) == 0)
5599 p
= s
->contents
+ glue_addr
;
5600 bfd_put_32 (globals
->obfd
, armbx1_tst_insn
+ (reg
<< 16), p
);
5601 bfd_put_32 (globals
->obfd
, armbx2_moveq_insn
+ reg
, p
+ 4);
5602 bfd_put_32 (globals
->obfd
, armbx3_bx_insn
+ reg
, p
+ 8);
5603 globals
->bx_glue_offset
[reg
] |= 1;
5606 return glue_addr
+ s
->output_section
->vma
+ s
->output_offset
;
5609 /* Generate Arm stubs for exported Thumb symbols. */
5611 elf32_arm_begin_write_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
5612 struct bfd_link_info
*link_info
)
5614 struct elf32_arm_link_hash_table
* globals
;
5619 globals
= elf32_arm_hash_table (link_info
);
5620 /* If blx is available then exported Thumb symbols are OK and there is
5622 if (globals
->use_blx
)
5625 elf_link_hash_traverse (&globals
->root
, elf32_arm_to_thumb_export_stub
,
5629 /* Some relocations map to different relocations depending on the
5630 target. Return the real relocation. */
5632 arm_real_reloc_type (struct elf32_arm_link_hash_table
* globals
,
5638 if (globals
->target1_is_rel
)
5644 return globals
->target2_reloc
;
5651 /* Return the base VMA address which should be subtracted from real addresses
5652 when resolving @dtpoff relocation.
5653 This is PT_TLS segment p_vaddr. */
5656 dtpoff_base (struct bfd_link_info
*info
)
5658 /* If tls_sec is NULL, we should have signalled an error already. */
5659 if (elf_hash_table (info
)->tls_sec
== NULL
)
5661 return elf_hash_table (info
)->tls_sec
->vma
;
5664 /* Return the relocation value for @tpoff relocation
5665 if STT_TLS virtual address is ADDRESS. */
5668 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
5670 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5673 /* If tls_sec is NULL, we should have signalled an error already. */
5674 if (htab
->tls_sec
== NULL
)
5676 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
5677 return address
- htab
->tls_sec
->vma
+ base
;
5680 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
5681 VALUE is the relocation value. */
5683 static bfd_reloc_status_type
5684 elf32_arm_abs12_reloc (bfd
*abfd
, void *data
, bfd_vma value
)
5687 return bfd_reloc_overflow
;
5689 value
|= bfd_get_32 (abfd
, data
) & 0xfffff000;
5690 bfd_put_32 (abfd
, value
, data
);
5691 return bfd_reloc_ok
;
5694 /* For a given value of n, calculate the value of G_n as required to
5695 deal with group relocations. We return it in the form of an
5696 encoded constant-and-rotation, together with the final residual. If n is
5697 specified as less than zero, then final_residual is filled with the
5698 input value and no further action is performed. */
5701 calculate_group_reloc_mask (bfd_vma value
, int n
, bfd_vma
*final_residual
)
5705 bfd_vma encoded_g_n
= 0;
5706 bfd_vma residual
= value
; /* Also known as Y_n. */
5708 for (current_n
= 0; current_n
<= n
; current_n
++)
5712 /* Calculate which part of the value to mask. */
5719 /* Determine the most significant bit in the residual and
5720 align the resulting value to a 2-bit boundary. */
5721 for (msb
= 30; msb
>= 0; msb
-= 2)
5722 if (residual
& (3 << msb
))
5725 /* The desired shift is now (msb - 6), or zero, whichever
5732 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
5733 g_n
= residual
& (0xff << shift
);
5734 encoded_g_n
= (g_n
>> shift
)
5735 | ((g_n
<= 0xff ? 0 : (32 - shift
) / 2) << 8);
5737 /* Calculate the residual for the next time around. */
5741 *final_residual
= residual
;
5746 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
5747 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
5750 identify_add_or_sub (bfd_vma insn
)
5752 int opcode
= insn
& 0x1e00000;
5754 if (opcode
== 1 << 23) /* ADD */
5757 if (opcode
== 1 << 22) /* SUB */
5763 /* Perform a relocation as part of a final link. */
5765 static bfd_reloc_status_type
5766 elf32_arm_final_link_relocate (reloc_howto_type
* howto
,
5769 asection
* input_section
,
5770 bfd_byte
* contents
,
5771 Elf_Internal_Rela
* rel
,
5773 struct bfd_link_info
* info
,
5775 const char * sym_name
,
5777 struct elf_link_hash_entry
* h
,
5778 bfd_boolean
* unresolved_reloc_p
,
5779 char **error_message
)
5781 unsigned long r_type
= howto
->type
;
5782 unsigned long r_symndx
;
5783 bfd_byte
* hit_data
= contents
+ rel
->r_offset
;
5784 bfd
* dynobj
= NULL
;
5785 Elf_Internal_Shdr
* symtab_hdr
;
5786 struct elf_link_hash_entry
** sym_hashes
;
5787 bfd_vma
* local_got_offsets
;
5788 asection
* sgot
= NULL
;
5789 asection
* splt
= NULL
;
5790 asection
* sreloc
= NULL
;
5792 bfd_signed_vma signed_addend
;
5793 struct elf32_arm_link_hash_table
* globals
;
5795 globals
= elf32_arm_hash_table (info
);
5797 BFD_ASSERT (is_arm_elf (input_bfd
));
5799 /* Some relocation types map to different relocations depending on the
5800 target. We pick the right one here. */
5801 r_type
= arm_real_reloc_type (globals
, r_type
);
5802 if (r_type
!= howto
->type
)
5803 howto
= elf32_arm_howto_from_type (r_type
);
5805 /* If the start address has been set, then set the EF_ARM_HASENTRY
5806 flag. Setting this more than once is redundant, but the cost is
5807 not too high, and it keeps the code simple.
5809 The test is done here, rather than somewhere else, because the
5810 start address is only set just before the final link commences.
5812 Note - if the user deliberately sets a start address of 0, the
5813 flag will not be set. */
5814 if (bfd_get_start_address (output_bfd
) != 0)
5815 elf_elfheader (output_bfd
)->e_flags
|= EF_ARM_HASENTRY
;
5817 dynobj
= elf_hash_table (info
)->dynobj
;
5820 sgot
= bfd_get_section_by_name (dynobj
, ".got");
5821 splt
= bfd_get_section_by_name (dynobj
, ".plt");
5823 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
5824 sym_hashes
= elf_sym_hashes (input_bfd
);
5825 local_got_offsets
= elf_local_got_offsets (input_bfd
);
5826 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5828 if (globals
->use_rel
)
5830 addend
= bfd_get_32 (input_bfd
, hit_data
) & howto
->src_mask
;
5832 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5835 signed_addend
&= ~ howto
->src_mask
;
5836 signed_addend
|= addend
;
5839 signed_addend
= addend
;
5842 addend
= signed_addend
= rel
->r_addend
;
5847 /* We don't need to find a value for this symbol. It's just a
5849 *unresolved_reloc_p
= FALSE
;
5850 return bfd_reloc_ok
;
5853 if (!globals
->vxworks_p
)
5854 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
5858 case R_ARM_ABS32_NOI
:
5860 case R_ARM_REL32_NOI
:
5866 /* Handle relocations which should use the PLT entry. ABS32/REL32
5867 will use the symbol's value, which may point to a PLT entry, but we
5868 don't need to handle that here. If we created a PLT entry, all
5869 branches in this object should go to it. */
5870 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
5871 && r_type
!= R_ARM_ABS32_NOI
&& r_type
!= R_ARM_REL32_NOI
)
5874 && h
->plt
.offset
!= (bfd_vma
) -1)
5876 /* If we've created a .plt section, and assigned a PLT entry to
5877 this function, it should not be known to bind locally. If
5878 it were, we would have cleared the PLT entry. */
5879 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
5881 value
= (splt
->output_section
->vma
5882 + splt
->output_offset
5884 *unresolved_reloc_p
= FALSE
;
5885 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5886 contents
, rel
->r_offset
, value
,
5890 /* When generating a shared object or relocatable executable, these
5891 relocations are copied into the output file to be resolved at
5893 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
5894 && (input_section
->flags
& SEC_ALLOC
)
5895 && !(elf32_arm_hash_table (info
)->vxworks_p
5896 && strcmp (input_section
->output_section
->name
,
5898 && ((r_type
!= R_ARM_REL32
&& r_type
!= R_ARM_REL32_NOI
)
5899 || !SYMBOL_CALLS_LOCAL (info
, h
))
5901 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5902 || h
->root
.type
!= bfd_link_hash_undefweak
)
5903 && r_type
!= R_ARM_PC24
5904 && r_type
!= R_ARM_CALL
5905 && r_type
!= R_ARM_JUMP24
5906 && r_type
!= R_ARM_PREL31
5907 && r_type
!= R_ARM_PLT32
)
5909 Elf_Internal_Rela outrel
;
5911 bfd_boolean skip
, relocate
;
5913 *unresolved_reloc_p
= FALSE
;
5919 name
= (bfd_elf_string_from_elf_section
5921 elf_elfheader (input_bfd
)->e_shstrndx
,
5922 elf_section_data (input_section
)->rel_hdr
.sh_name
));
5924 return bfd_reloc_notsupported
;
5926 BFD_ASSERT (reloc_section_p (globals
, name
, input_section
));
5928 sreloc
= bfd_get_section_by_name (dynobj
, name
);
5929 BFD_ASSERT (sreloc
!= NULL
);
5935 outrel
.r_addend
= addend
;
5937 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
5939 if (outrel
.r_offset
== (bfd_vma
) -1)
5941 else if (outrel
.r_offset
== (bfd_vma
) -2)
5942 skip
= TRUE
, relocate
= TRUE
;
5943 outrel
.r_offset
+= (input_section
->output_section
->vma
5944 + input_section
->output_offset
);
5947 memset (&outrel
, 0, sizeof outrel
);
5952 || !h
->def_regular
))
5953 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
5958 /* This symbol is local, or marked to become local. */
5959 if (sym_flags
== STT_ARM_TFUNC
)
5961 if (globals
->symbian_p
)
5965 /* On Symbian OS, the data segment and text segement
5966 can be relocated independently. Therefore, we
5967 must indicate the segment to which this
5968 relocation is relative. The BPABI allows us to
5969 use any symbol in the right segment; we just use
5970 the section symbol as it is convenient. (We
5971 cannot use the symbol given by "h" directly as it
5972 will not appear in the dynamic symbol table.)
5974 Note that the dynamic linker ignores the section
5975 symbol value, so we don't subtract osec->vma
5976 from the emitted reloc addend. */
5978 osec
= sym_sec
->output_section
;
5980 osec
= input_section
->output_section
;
5981 symbol
= elf_section_data (osec
)->dynindx
;
5984 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5986 if ((osec
->flags
& SEC_READONLY
) == 0
5987 && htab
->data_index_section
!= NULL
)
5988 osec
= htab
->data_index_section
;
5990 osec
= htab
->text_index_section
;
5991 symbol
= elf_section_data (osec
)->dynindx
;
5993 BFD_ASSERT (symbol
!= 0);
5996 /* On SVR4-ish systems, the dynamic loader cannot
5997 relocate the text and data segments independently,
5998 so the symbol does not matter. */
6000 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
6001 if (globals
->use_rel
)
6004 outrel
.r_addend
+= value
;
6007 loc
= sreloc
->contents
;
6008 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
6009 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6011 /* If this reloc is against an external symbol, we do not want to
6012 fiddle with the addend. Otherwise, we need to include the symbol
6013 value so that it becomes an addend for the dynamic reloc. */
6015 return bfd_reloc_ok
;
6017 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6018 contents
, rel
->r_offset
, value
,
6021 else switch (r_type
)
6024 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
6026 case R_ARM_XPC25
: /* Arm BLX instruction. */
6029 case R_ARM_PC24
: /* Arm B/BL instruction */
6033 bfd_signed_vma branch_offset
;
6034 struct elf32_arm_stub_hash_entry
*stub_entry
= NULL
;
6036 from
= (input_section
->output_section
->vma
6037 + input_section
->output_offset
6039 branch_offset
= (bfd_signed_vma
)(value
- from
);
6041 if (r_type
== R_ARM_XPC25
)
6043 /* Check for Arm calling Arm function. */
6044 /* FIXME: Should we translate the instruction into a BL
6045 instruction instead ? */
6046 if (sym_flags
!= STT_ARM_TFUNC
)
6047 (*_bfd_error_handler
)
6048 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
6050 h
? h
->root
.root
.string
: "(local)");
6052 else if (r_type
!= R_ARM_CALL
)
6054 /* Check for Arm calling Thumb function. */
6055 if (sym_flags
== STT_ARM_TFUNC
)
6057 if (elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
6058 output_bfd
, input_section
,
6059 hit_data
, sym_sec
, rel
->r_offset
,
6060 signed_addend
, value
,
6062 return bfd_reloc_ok
;
6064 return bfd_reloc_dangerous
;
6068 /* Check if a stub has to be inserted because the
6069 destination is too far or we are changing mode */
6070 if (r_type
== R_ARM_CALL
)
6072 if (branch_offset
> ARM_MAX_FWD_BRANCH_OFFSET
6073 || branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
6074 || sym_flags
== STT_ARM_TFUNC
)
6076 /* The target is out of reach, so redirect the
6077 branch to the local stub for this function. */
6079 stub_entry
= elf32_arm_get_stub_entry (input_section
,
6082 if (stub_entry
!= NULL
)
6083 value
= (stub_entry
->stub_offset
6084 + stub_entry
->stub_sec
->output_offset
6085 + stub_entry
->stub_sec
->output_section
->vma
);
6089 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
6091 S is the address of the symbol in the relocation.
6092 P is address of the instruction being relocated.
6093 A is the addend (extracted from the instruction) in bytes.
6095 S is held in 'value'.
6096 P is the base address of the section containing the
6097 instruction plus the offset of the reloc into that
6099 (input_section->output_section->vma +
6100 input_section->output_offset +
6102 A is the addend, converted into bytes, ie:
6105 Note: None of these operations have knowledge of the pipeline
6106 size of the processor, thus it is up to the assembler to
6107 encode this information into the addend. */
6108 value
-= (input_section
->output_section
->vma
6109 + input_section
->output_offset
);
6110 value
-= rel
->r_offset
;
6111 if (globals
->use_rel
)
6112 value
+= (signed_addend
<< howto
->size
);
6114 /* RELA addends do not have to be adjusted by howto->size. */
6115 value
+= signed_addend
;
6117 signed_addend
= value
;
6118 signed_addend
>>= howto
->rightshift
;
6120 /* A branch to an undefined weak symbol is turned into a jump to
6121 the next instruction. */
6122 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
6124 value
= (bfd_get_32 (input_bfd
, hit_data
) & 0xf0000000)
6129 /* Perform a signed range check. */
6130 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
6131 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
6132 return bfd_reloc_overflow
;
6134 addend
= (value
& 2);
6136 value
= (signed_addend
& howto
->dst_mask
)
6137 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
6139 /* Set the H bit in the BLX instruction. */
6140 if (sym_flags
== STT_ARM_TFUNC
)
6145 value
&= ~(bfd_vma
)(1 << 24);
6147 if (r_type
== R_ARM_CALL
)
6149 /* Select the correct instruction (BL or BLX). */
6150 /* Only if we are not handling a BL to a stub. In this
6151 case, mode switching is performed by the stub. */
6152 if (sym_flags
== STT_ARM_TFUNC
&& !stub_entry
)
6156 value
&= ~(bfd_vma
)(1 << 28);
6166 if (sym_flags
== STT_ARM_TFUNC
)
6170 case R_ARM_ABS32_NOI
:
6176 if (sym_flags
== STT_ARM_TFUNC
)
6178 value
-= (input_section
->output_section
->vma
6179 + input_section
->output_offset
+ rel
->r_offset
);
6182 case R_ARM_REL32_NOI
:
6184 value
-= (input_section
->output_section
->vma
6185 + input_section
->output_offset
+ rel
->r_offset
);
6189 value
-= (input_section
->output_section
->vma
6190 + input_section
->output_offset
+ rel
->r_offset
);
6191 value
+= signed_addend
;
6192 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
6194 /* Check for overflow */
6195 if ((value
^ (value
>> 1)) & (1 << 30))
6196 return bfd_reloc_overflow
;
6198 value
&= 0x7fffffff;
6199 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
6200 if (sym_flags
== STT_ARM_TFUNC
)
6205 bfd_put_32 (input_bfd
, value
, hit_data
);
6206 return bfd_reloc_ok
;
6210 if ((long) value
> 0x7f || (long) value
< -0x80)
6211 return bfd_reloc_overflow
;
6213 bfd_put_8 (input_bfd
, value
, hit_data
);
6214 return bfd_reloc_ok
;
6219 if ((long) value
> 0x7fff || (long) value
< -0x8000)
6220 return bfd_reloc_overflow
;
6222 bfd_put_16 (input_bfd
, value
, hit_data
);
6223 return bfd_reloc_ok
;
6225 case R_ARM_THM_ABS5
:
6226 /* Support ldr and str instructions for the thumb. */
6227 if (globals
->use_rel
)
6229 /* Need to refetch addend. */
6230 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
6231 /* ??? Need to determine shift amount from operand size. */
6232 addend
>>= howto
->rightshift
;
6236 /* ??? Isn't value unsigned? */
6237 if ((long) value
> 0x1f || (long) value
< -0x10)
6238 return bfd_reloc_overflow
;
6240 /* ??? Value needs to be properly shifted into place first. */
6241 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
6242 bfd_put_16 (input_bfd
, value
, hit_data
);
6243 return bfd_reloc_ok
;
6245 case R_ARM_THM_ALU_PREL_11_0
:
6246 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
6249 bfd_signed_vma relocation
;
6251 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
6252 | bfd_get_16 (input_bfd
, hit_data
+ 2);
6254 if (globals
->use_rel
)
6256 signed_addend
= (insn
& 0xff) | ((insn
& 0x7000) >> 4)
6257 | ((insn
& (1 << 26)) >> 15);
6258 if (insn
& 0xf00000)
6259 signed_addend
= -signed_addend
;
6262 relocation
= value
+ signed_addend
;
6263 relocation
-= (input_section
->output_section
->vma
6264 + input_section
->output_offset
6267 value
= abs (relocation
);
6269 if (value
>= 0x1000)
6270 return bfd_reloc_overflow
;
6272 insn
= (insn
& 0xfb0f8f00) | (value
& 0xff)
6273 | ((value
& 0x700) << 4)
6274 | ((value
& 0x800) << 15);
6278 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
6279 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
6281 return bfd_reloc_ok
;
6284 case R_ARM_THM_PC12
:
6285 /* Corresponds to: ldr.w reg, [pc, #offset]. */
6288 bfd_signed_vma relocation
;
6290 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
6291 | bfd_get_16 (input_bfd
, hit_data
+ 2);
6293 if (globals
->use_rel
)
6295 signed_addend
= insn
& 0xfff;
6296 if (!(insn
& (1 << 23)))
6297 signed_addend
= -signed_addend
;
6300 relocation
= value
+ signed_addend
;
6301 relocation
-= (input_section
->output_section
->vma
6302 + input_section
->output_offset
6305 value
= abs (relocation
);
6307 if (value
>= 0x1000)
6308 return bfd_reloc_overflow
;
6310 insn
= (insn
& 0xff7ff000) | value
;
6311 if (relocation
>= 0)
6314 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
6315 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
6317 return bfd_reloc_ok
;
6320 case R_ARM_THM_XPC22
:
6321 case R_ARM_THM_CALL
:
6322 case R_ARM_THM_JUMP24
:
6323 /* Thumb BL (branch long instruction). */
6327 bfd_boolean overflow
= FALSE
;
6328 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
6329 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
6330 bfd_signed_vma reloc_signed_max
;
6331 bfd_signed_vma reloc_signed_min
;
6333 bfd_signed_vma signed_check
;
6335 int thumb2
= using_thumb2 (globals
);
6337 /* A branch to an undefined weak symbol is turned into a jump to
6338 the next instruction. */
6339 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
6341 bfd_put_16 (input_bfd
, 0xe000, hit_data
);
6342 bfd_put_16 (input_bfd
, 0xbf00, hit_data
+ 2);
6343 return bfd_reloc_ok
;
6346 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
6347 with Thumb-1) involving the J1 and J2 bits. */
6348 if (globals
->use_rel
)
6350 bfd_vma s
= (upper_insn
& (1 << 10)) >> 10;
6351 bfd_vma upper
= upper_insn
& 0x3ff;
6352 bfd_vma lower
= lower_insn
& 0x7ff;
6353 bfd_vma j1
= (lower_insn
& (1 << 13)) >> 13;
6354 bfd_vma j2
= (lower_insn
& (1 << 11)) >> 11;
6355 bfd_vma i1
= j1
^ s
? 0 : 1;
6356 bfd_vma i2
= j2
^ s
? 0 : 1;
6358 addend
= (i1
<< 23) | (i2
<< 22) | (upper
<< 12) | (lower
<< 1);
6360 addend
= (addend
| ((s
? 0 : 1) << 24)) - (1 << 24);
6362 signed_addend
= addend
;
6365 if (r_type
== R_ARM_THM_XPC22
)
6367 /* Check for Thumb to Thumb call. */
6368 /* FIXME: Should we translate the instruction into a BL
6369 instruction instead ? */
6370 if (sym_flags
== STT_ARM_TFUNC
)
6371 (*_bfd_error_handler
)
6372 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
6374 h
? h
->root
.root
.string
: "(local)");
6378 /* If it is not a call to Thumb, assume call to Arm.
6379 If it is a call relative to a section name, then it is not a
6380 function call at all, but rather a long jump. Calls through
6381 the PLT do not require stubs. */
6382 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
6383 && (h
== NULL
|| splt
== NULL
6384 || h
->plt
.offset
== (bfd_vma
) -1))
6386 if (globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
6388 /* Convert BL to BLX. */
6389 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6391 else if (r_type
!= R_ARM_THM_CALL
) {
6392 if (elf32_thumb_to_arm_stub
6393 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
6394 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
,
6396 return bfd_reloc_ok
;
6398 return bfd_reloc_dangerous
;
6401 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
6402 && r_type
== R_ARM_THM_CALL
)
6404 /* Make sure this is a BL. */
6405 lower_insn
|= 0x1800;
6409 /* Handle calls via the PLT. */
6410 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
6412 value
= (splt
->output_section
->vma
6413 + splt
->output_offset
6415 if (globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
6417 /* If the Thumb BLX instruction is available, convert the
6418 BL to a BLX instruction to call the ARM-mode PLT entry. */
6419 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6422 /* Target the Thumb stub before the ARM PLT entry. */
6423 value
-= PLT_THUMB_STUB_SIZE
;
6424 *unresolved_reloc_p
= FALSE
;
6427 if (r_type
== R_ARM_THM_CALL
)
6429 /* Check if a stub has to be inserted because the destination
6432 bfd_signed_vma branch_offset
;
6433 struct elf32_arm_stub_hash_entry
*stub_entry
= NULL
;
6435 from
= (input_section
->output_section
->vma
6436 + input_section
->output_offset
6438 branch_offset
= (bfd_signed_vma
)(value
- from
);
6441 && (branch_offset
> THM_MAX_FWD_BRANCH_OFFSET
6442 || (branch_offset
< THM_MAX_BWD_BRANCH_OFFSET
)))
6445 && (branch_offset
> THM2_MAX_FWD_BRANCH_OFFSET
6446 || (branch_offset
< THM2_MAX_BWD_BRANCH_OFFSET
)))
6447 || ((sym_flags
!= STT_ARM_TFUNC
) && !globals
->use_blx
))
6449 /* The target is out of reach or we are changing modes, so
6450 redirect the branch to the local stub for this
6452 stub_entry
= elf32_arm_get_stub_entry (input_section
,
6455 if (stub_entry
!= NULL
)
6456 value
= (stub_entry
->stub_offset
6457 + stub_entry
->stub_sec
->output_offset
6458 + stub_entry
->stub_sec
->output_section
->vma
);
6460 /* If this call becomes a call to Arm, force BLX. */
6461 if (globals
->use_blx
)
6464 && !arm_stub_is_thumb (stub_entry
->stub_type
))
6465 || (sym_flags
!= STT_ARM_TFUNC
))
6466 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6471 relocation
= value
+ signed_addend
;
6473 relocation
-= (input_section
->output_section
->vma
6474 + input_section
->output_offset
6477 check
= relocation
>> howto
->rightshift
;
6479 /* If this is a signed value, the rightshift just dropped
6480 leading 1 bits (assuming twos complement). */
6481 if ((bfd_signed_vma
) relocation
>= 0)
6482 signed_check
= check
;
6484 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
6486 /* Calculate the permissable maximum and minimum values for
6487 this relocation according to whether we're relocating for
6489 bitsize
= howto
->bitsize
;
6492 reloc_signed_max
= ((1 << (bitsize
- 1)) - 1) >> howto
->rightshift
;
6493 reloc_signed_min
= ~reloc_signed_max
;
6495 /* Assumes two's complement. */
6496 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6499 if ((lower_insn
& 0x5000) == 0x4000)
6500 /* For a BLX instruction, make sure that the relocation is rounded up
6501 to a word boundary. This follows the semantics of the instruction
6502 which specifies that bit 1 of the target address will come from bit
6503 1 of the base address. */
6504 relocation
= (relocation
+ 2) & ~ 3;
6506 /* Put RELOCATION back into the insn. Assumes two's complement.
6507 We use the Thumb-2 encoding, which is safe even if dealing with
6508 a Thumb-1 instruction by virtue of our overflow check above. */
6509 reloc_sign
= (signed_check
< 0) ? 1 : 0;
6510 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff)
6511 | ((relocation
>> 12) & 0x3ff)
6512 | (reloc_sign
<< 10);
6513 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x2fff)
6514 | (((!((relocation
>> 23) & 1)) ^ reloc_sign
) << 13)
6515 | (((!((relocation
>> 22) & 1)) ^ reloc_sign
) << 11)
6516 | ((relocation
>> 1) & 0x7ff);
6518 /* Put the relocated value back in the object file: */
6519 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
6520 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
6522 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
6526 case R_ARM_THM_JUMP19
:
6527 /* Thumb32 conditional branch instruction. */
6530 bfd_boolean overflow
= FALSE
;
6531 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
6532 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
6533 bfd_signed_vma reloc_signed_max
= 0xffffe;
6534 bfd_signed_vma reloc_signed_min
= -0x100000;
6535 bfd_signed_vma signed_check
;
6537 /* Need to refetch the addend, reconstruct the top three bits,
6538 and squish the two 11 bit pieces together. */
6539 if (globals
->use_rel
)
6541 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
6542 bfd_vma upper
= (upper_insn
& 0x003f);
6543 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
6544 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
6545 bfd_vma lower
= (lower_insn
& 0x07ff);
6550 upper
-= 0x0100; /* Sign extend. */
6552 addend
= (upper
<< 12) | (lower
<< 1);
6553 signed_addend
= addend
;
6556 /* Handle calls via the PLT. */
6557 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
6559 value
= (splt
->output_section
->vma
6560 + splt
->output_offset
6562 /* Target the Thumb stub before the ARM PLT entry. */
6563 value
-= PLT_THUMB_STUB_SIZE
;
6564 *unresolved_reloc_p
= FALSE
;
6567 /* ??? Should handle interworking? GCC might someday try to
6568 use this for tail calls. */
6570 relocation
= value
+ signed_addend
;
6571 relocation
-= (input_section
->output_section
->vma
6572 + input_section
->output_offset
6574 signed_check
= (bfd_signed_vma
) relocation
;
6576 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6579 /* Put RELOCATION back into the insn. */
6581 bfd_vma S
= (relocation
& 0x00100000) >> 20;
6582 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
6583 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
6584 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
6585 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
6587 upper_insn
= (upper_insn
& 0xfbc0) | (S
<< 10) | hi
;
6588 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
6591 /* Put the relocated value back in the object file: */
6592 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
6593 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
6595 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
6598 case R_ARM_THM_JUMP11
:
6599 case R_ARM_THM_JUMP8
:
6600 case R_ARM_THM_JUMP6
:
6601 /* Thumb B (branch) instruction). */
6603 bfd_signed_vma relocation
;
6604 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
6605 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
6606 bfd_signed_vma signed_check
;
6608 /* CZB cannot jump backward. */
6609 if (r_type
== R_ARM_THM_JUMP6
)
6610 reloc_signed_min
= 0;
6612 if (globals
->use_rel
)
6614 /* Need to refetch addend. */
6615 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
6616 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6619 signed_addend
&= ~ howto
->src_mask
;
6620 signed_addend
|= addend
;
6623 signed_addend
= addend
;
6624 /* The value in the insn has been right shifted. We need to
6625 undo this, so that we can perform the address calculation
6626 in terms of bytes. */
6627 signed_addend
<<= howto
->rightshift
;
6629 relocation
= value
+ signed_addend
;
6631 relocation
-= (input_section
->output_section
->vma
6632 + input_section
->output_offset
6635 relocation
>>= howto
->rightshift
;
6636 signed_check
= relocation
;
6638 if (r_type
== R_ARM_THM_JUMP6
)
6639 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
6641 relocation
&= howto
->dst_mask
;
6642 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
6644 bfd_put_16 (input_bfd
, relocation
, hit_data
);
6646 /* Assumes two's complement. */
6647 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6648 return bfd_reloc_overflow
;
6650 return bfd_reloc_ok
;
6653 case R_ARM_ALU_PCREL7_0
:
6654 case R_ARM_ALU_PCREL15_8
:
6655 case R_ARM_ALU_PCREL23_15
:
6660 insn
= bfd_get_32 (input_bfd
, hit_data
);
6661 if (globals
->use_rel
)
6663 /* Extract the addend. */
6664 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
6665 signed_addend
= addend
;
6667 relocation
= value
+ signed_addend
;
6669 relocation
-= (input_section
->output_section
->vma
6670 + input_section
->output_offset
6672 insn
= (insn
& ~0xfff)
6673 | ((howto
->bitpos
<< 7) & 0xf00)
6674 | ((relocation
>> howto
->bitpos
) & 0xff);
6675 bfd_put_32 (input_bfd
, value
, hit_data
);
6677 return bfd_reloc_ok
;
6679 case R_ARM_GNU_VTINHERIT
:
6680 case R_ARM_GNU_VTENTRY
:
6681 return bfd_reloc_ok
;
6683 case R_ARM_GOTOFF32
:
6684 /* Relocation is relative to the start of the
6685 global offset table. */
6687 BFD_ASSERT (sgot
!= NULL
);
6689 return bfd_reloc_notsupported
;
6691 /* If we are addressing a Thumb function, we need to adjust the
6692 address by one, so that attempts to call the function pointer will
6693 correctly interpret it as Thumb code. */
6694 if (sym_flags
== STT_ARM_TFUNC
)
6697 /* Note that sgot->output_offset is not involved in this
6698 calculation. We always want the start of .got. If we
6699 define _GLOBAL_OFFSET_TABLE in a different way, as is
6700 permitted by the ABI, we might have to change this
6702 value
-= sgot
->output_section
->vma
;
6703 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6704 contents
, rel
->r_offset
, value
,
6708 /* Use global offset table as symbol value. */
6709 BFD_ASSERT (sgot
!= NULL
);
6712 return bfd_reloc_notsupported
;
6714 *unresolved_reloc_p
= FALSE
;
6715 value
= sgot
->output_section
->vma
;
6716 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6717 contents
, rel
->r_offset
, value
,
6721 case R_ARM_GOT_PREL
:
6722 /* Relocation is to the entry for this symbol in the
6723 global offset table. */
6725 return bfd_reloc_notsupported
;
6732 off
= h
->got
.offset
;
6733 BFD_ASSERT (off
!= (bfd_vma
) -1);
6734 dyn
= globals
->root
.dynamic_sections_created
;
6736 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
6738 && SYMBOL_REFERENCES_LOCAL (info
, h
))
6739 || (ELF_ST_VISIBILITY (h
->other
)
6740 && h
->root
.type
== bfd_link_hash_undefweak
))
6742 /* This is actually a static link, or it is a -Bsymbolic link
6743 and the symbol is defined locally. We must initialize this
6744 entry in the global offset table. Since the offset must
6745 always be a multiple of 4, we use the least significant bit
6746 to record whether we have initialized it already.
6748 When doing a dynamic link, we create a .rel(a).got relocation
6749 entry to initialize the value. This is done in the
6750 finish_dynamic_symbol routine. */
6755 /* If we are addressing a Thumb function, we need to
6756 adjust the address by one, so that attempts to
6757 call the function pointer will correctly
6758 interpret it as Thumb code. */
6759 if (sym_flags
== STT_ARM_TFUNC
)
6762 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
6767 *unresolved_reloc_p
= FALSE
;
6769 value
= sgot
->output_offset
+ off
;
6775 BFD_ASSERT (local_got_offsets
!= NULL
&&
6776 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
6778 off
= local_got_offsets
[r_symndx
];
6780 /* The offset must always be a multiple of 4. We use the
6781 least significant bit to record whether we have already
6782 generated the necessary reloc. */
6787 /* If we are addressing a Thumb function, we need to
6788 adjust the address by one, so that attempts to
6789 call the function pointer will correctly
6790 interpret it as Thumb code. */
6791 if (sym_flags
== STT_ARM_TFUNC
)
6794 if (globals
->use_rel
)
6795 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
6800 Elf_Internal_Rela outrel
;
6803 srelgot
= (bfd_get_section_by_name
6804 (dynobj
, RELOC_SECTION (globals
, ".got")));
6805 BFD_ASSERT (srelgot
!= NULL
);
6807 outrel
.r_addend
= addend
+ value
;
6808 outrel
.r_offset
= (sgot
->output_section
->vma
6809 + sgot
->output_offset
6811 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
6812 loc
= srelgot
->contents
;
6813 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
6814 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6817 local_got_offsets
[r_symndx
] |= 1;
6820 value
= sgot
->output_offset
+ off
;
6822 if (r_type
!= R_ARM_GOT32
)
6823 value
+= sgot
->output_section
->vma
;
6825 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6826 contents
, rel
->r_offset
, value
,
6829 case R_ARM_TLS_LDO32
:
6830 value
= value
- dtpoff_base (info
);
6832 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6833 contents
, rel
->r_offset
, value
,
6836 case R_ARM_TLS_LDM32
:
6840 if (globals
->sgot
== NULL
)
6843 off
= globals
->tls_ldm_got
.offset
;
6849 /* If we don't know the module number, create a relocation
6853 Elf_Internal_Rela outrel
;
6856 if (globals
->srelgot
== NULL
)
6859 outrel
.r_addend
= 0;
6860 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
6861 + globals
->sgot
->output_offset
+ off
);
6862 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
6864 if (globals
->use_rel
)
6865 bfd_put_32 (output_bfd
, outrel
.r_addend
,
6866 globals
->sgot
->contents
+ off
);
6868 loc
= globals
->srelgot
->contents
;
6869 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
6870 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6873 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
6875 globals
->tls_ldm_got
.offset
|= 1;
6878 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
6879 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
6881 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6882 contents
, rel
->r_offset
, value
,
6886 case R_ARM_TLS_GD32
:
6887 case R_ARM_TLS_IE32
:
6893 if (globals
->sgot
== NULL
)
6900 dyn
= globals
->root
.dynamic_sections_created
;
6901 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
6903 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
6905 *unresolved_reloc_p
= FALSE
;
6908 off
= h
->got
.offset
;
6909 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
6913 if (local_got_offsets
== NULL
)
6915 off
= local_got_offsets
[r_symndx
];
6916 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
6919 if (tls_type
== GOT_UNKNOWN
)
6926 bfd_boolean need_relocs
= FALSE
;
6927 Elf_Internal_Rela outrel
;
6928 bfd_byte
*loc
= NULL
;
6931 /* The GOT entries have not been initialized yet. Do it
6932 now, and emit any relocations. If both an IE GOT and a
6933 GD GOT are necessary, we emit the GD first. */
6935 if ((info
->shared
|| indx
!= 0)
6937 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6938 || h
->root
.type
!= bfd_link_hash_undefweak
))
6941 if (globals
->srelgot
== NULL
)
6943 loc
= globals
->srelgot
->contents
;
6944 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
6947 if (tls_type
& GOT_TLS_GD
)
6951 outrel
.r_addend
= 0;
6952 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
6953 + globals
->sgot
->output_offset
6955 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
6957 if (globals
->use_rel
)
6958 bfd_put_32 (output_bfd
, outrel
.r_addend
,
6959 globals
->sgot
->contents
+ cur_off
);
6961 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6962 globals
->srelgot
->reloc_count
++;
6963 loc
+= RELOC_SIZE (globals
);
6966 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
6967 globals
->sgot
->contents
+ cur_off
+ 4);
6970 outrel
.r_addend
= 0;
6971 outrel
.r_info
= ELF32_R_INFO (indx
,
6972 R_ARM_TLS_DTPOFF32
);
6973 outrel
.r_offset
+= 4;
6975 if (globals
->use_rel
)
6976 bfd_put_32 (output_bfd
, outrel
.r_addend
,
6977 globals
->sgot
->contents
+ cur_off
+ 4);
6980 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6981 globals
->srelgot
->reloc_count
++;
6982 loc
+= RELOC_SIZE (globals
);
6987 /* If we are not emitting relocations for a
6988 general dynamic reference, then we must be in a
6989 static link or an executable link with the
6990 symbol binding locally. Mark it as belonging
6991 to module 1, the executable. */
6992 bfd_put_32 (output_bfd
, 1,
6993 globals
->sgot
->contents
+ cur_off
);
6994 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
6995 globals
->sgot
->contents
+ cur_off
+ 4);
7001 if (tls_type
& GOT_TLS_IE
)
7006 outrel
.r_addend
= value
- dtpoff_base (info
);
7008 outrel
.r_addend
= 0;
7009 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
7010 + globals
->sgot
->output_offset
7012 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
7014 if (globals
->use_rel
)
7015 bfd_put_32 (output_bfd
, outrel
.r_addend
,
7016 globals
->sgot
->contents
+ cur_off
);
7018 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
7019 globals
->srelgot
->reloc_count
++;
7020 loc
+= RELOC_SIZE (globals
);
7023 bfd_put_32 (output_bfd
, tpoff (info
, value
),
7024 globals
->sgot
->contents
+ cur_off
);
7031 local_got_offsets
[r_symndx
] |= 1;
7034 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
7036 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
7037 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
7039 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7040 contents
, rel
->r_offset
, value
,
7044 case R_ARM_TLS_LE32
:
7047 (*_bfd_error_handler
)
7048 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
7049 input_bfd
, input_section
,
7050 (long) rel
->r_offset
, howto
->name
);
7054 value
= tpoff (info
, value
);
7056 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7057 contents
, rel
->r_offset
, value
,
7061 if (globals
->fix_v4bx
)
7063 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7065 /* Ensure that we have a BX instruction. */
7066 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
7068 if (globals
->fix_v4bx
== 2 && (insn
& 0xf) != 0xf)
7070 /* Branch to veneer. */
7072 glue_addr
= elf32_arm_bx_glue (info
, insn
& 0xf);
7073 glue_addr
-= input_section
->output_section
->vma
7074 + input_section
->output_offset
7075 + rel
->r_offset
+ 8;
7076 insn
= (insn
& 0xf0000000) | 0x0a000000
7077 | ((glue_addr
>> 2) & 0x00ffffff);
7081 /* Preserve Rm (lowest four bits) and the condition code
7082 (highest four bits). Other bits encode MOV PC,Rm. */
7083 insn
= (insn
& 0xf000000f) | 0x01a0f000;
7086 bfd_put_32 (input_bfd
, insn
, hit_data
);
7088 return bfd_reloc_ok
;
7090 case R_ARM_MOVW_ABS_NC
:
7091 case R_ARM_MOVT_ABS
:
7092 case R_ARM_MOVW_PREL_NC
:
7093 case R_ARM_MOVT_PREL
:
7094 /* Until we properly support segment-base-relative addressing then
7095 we assume the segment base to be zero, as for the group relocations.
7096 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
7097 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
7098 case R_ARM_MOVW_BREL_NC
:
7099 case R_ARM_MOVW_BREL
:
7100 case R_ARM_MOVT_BREL
:
7102 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7104 if (globals
->use_rel
)
7106 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
7107 signed_addend
= (addend
^ 0x8000) - 0x8000;
7110 value
+= signed_addend
;
7112 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
7113 value
-= (input_section
->output_section
->vma
7114 + input_section
->output_offset
+ rel
->r_offset
);
7116 if (r_type
== R_ARM_MOVW_BREL
&& value
>= 0x10000)
7117 return bfd_reloc_overflow
;
7119 if (sym_flags
== STT_ARM_TFUNC
)
7122 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
7123 || r_type
== R_ARM_MOVT_BREL
)
7127 insn
|= value
& 0xfff;
7128 insn
|= (value
& 0xf000) << 4;
7129 bfd_put_32 (input_bfd
, insn
, hit_data
);
7131 return bfd_reloc_ok
;
7133 case R_ARM_THM_MOVW_ABS_NC
:
7134 case R_ARM_THM_MOVT_ABS
:
7135 case R_ARM_THM_MOVW_PREL_NC
:
7136 case R_ARM_THM_MOVT_PREL
:
7137 /* Until we properly support segment-base-relative addressing then
7138 we assume the segment base to be zero, as for the above relocations.
7139 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
7140 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
7141 as R_ARM_THM_MOVT_ABS. */
7142 case R_ARM_THM_MOVW_BREL_NC
:
7143 case R_ARM_THM_MOVW_BREL
:
7144 case R_ARM_THM_MOVT_BREL
:
7148 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
7149 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
7151 if (globals
->use_rel
)
7153 addend
= ((insn
>> 4) & 0xf000)
7154 | ((insn
>> 15) & 0x0800)
7155 | ((insn
>> 4) & 0x0700)
7157 signed_addend
= (addend
^ 0x8000) - 0x8000;
7160 value
+= signed_addend
;
7162 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
7163 value
-= (input_section
->output_section
->vma
7164 + input_section
->output_offset
+ rel
->r_offset
);
7166 if (r_type
== R_ARM_THM_MOVW_BREL
&& value
>= 0x10000)
7167 return bfd_reloc_overflow
;
7169 if (sym_flags
== STT_ARM_TFUNC
)
7172 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
7173 || r_type
== R_ARM_THM_MOVT_BREL
)
7177 insn
|= (value
& 0xf000) << 4;
7178 insn
|= (value
& 0x0800) << 15;
7179 insn
|= (value
& 0x0700) << 4;
7180 insn
|= (value
& 0x00ff);
7182 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
7183 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
7185 return bfd_reloc_ok
;
7187 case R_ARM_ALU_PC_G0_NC
:
7188 case R_ARM_ALU_PC_G1_NC
:
7189 case R_ARM_ALU_PC_G0
:
7190 case R_ARM_ALU_PC_G1
:
7191 case R_ARM_ALU_PC_G2
:
7192 case R_ARM_ALU_SB_G0_NC
:
7193 case R_ARM_ALU_SB_G1_NC
:
7194 case R_ARM_ALU_SB_G0
:
7195 case R_ARM_ALU_SB_G1
:
7196 case R_ARM_ALU_SB_G2
:
7198 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7199 bfd_vma pc
= input_section
->output_section
->vma
7200 + input_section
->output_offset
+ rel
->r_offset
;
7201 /* sb should be the origin of the *segment* containing the symbol.
7202 It is not clear how to obtain this OS-dependent value, so we
7203 make an arbitrary choice of zero. */
7207 bfd_signed_vma signed_value
;
7210 /* Determine which group of bits to select. */
7213 case R_ARM_ALU_PC_G0_NC
:
7214 case R_ARM_ALU_PC_G0
:
7215 case R_ARM_ALU_SB_G0_NC
:
7216 case R_ARM_ALU_SB_G0
:
7220 case R_ARM_ALU_PC_G1_NC
:
7221 case R_ARM_ALU_PC_G1
:
7222 case R_ARM_ALU_SB_G1_NC
:
7223 case R_ARM_ALU_SB_G1
:
7227 case R_ARM_ALU_PC_G2
:
7228 case R_ARM_ALU_SB_G2
:
7236 /* If REL, extract the addend from the insn. If RELA, it will
7237 have already been fetched for us. */
7238 if (globals
->use_rel
)
7241 bfd_vma constant
= insn
& 0xff;
7242 bfd_vma rotation
= (insn
& 0xf00) >> 8;
7245 signed_addend
= constant
;
7248 /* Compensate for the fact that in the instruction, the
7249 rotation is stored in multiples of 2 bits. */
7252 /* Rotate "constant" right by "rotation" bits. */
7253 signed_addend
= (constant
>> rotation
) |
7254 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
7257 /* Determine if the instruction is an ADD or a SUB.
7258 (For REL, this determines the sign of the addend.) */
7259 negative
= identify_add_or_sub (insn
);
7262 (*_bfd_error_handler
)
7263 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
7264 input_bfd
, input_section
,
7265 (long) rel
->r_offset
, howto
->name
);
7266 return bfd_reloc_overflow
;
7269 signed_addend
*= negative
;
7272 /* Compute the value (X) to go in the place. */
7273 if (r_type
== R_ARM_ALU_PC_G0_NC
7274 || r_type
== R_ARM_ALU_PC_G1_NC
7275 || r_type
== R_ARM_ALU_PC_G0
7276 || r_type
== R_ARM_ALU_PC_G1
7277 || r_type
== R_ARM_ALU_PC_G2
)
7279 signed_value
= value
- pc
+ signed_addend
;
7281 /* Section base relative. */
7282 signed_value
= value
- sb
+ signed_addend
;
7284 /* If the target symbol is a Thumb function, then set the
7285 Thumb bit in the address. */
7286 if (sym_flags
== STT_ARM_TFUNC
)
7289 /* Calculate the value of the relevant G_n, in encoded
7290 constant-with-rotation format. */
7291 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
7294 /* Check for overflow if required. */
7295 if ((r_type
== R_ARM_ALU_PC_G0
7296 || r_type
== R_ARM_ALU_PC_G1
7297 || r_type
== R_ARM_ALU_PC_G2
7298 || r_type
== R_ARM_ALU_SB_G0
7299 || r_type
== R_ARM_ALU_SB_G1
7300 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
7302 (*_bfd_error_handler
)
7303 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7304 input_bfd
, input_section
,
7305 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7306 return bfd_reloc_overflow
;
7309 /* Mask out the value and the ADD/SUB part of the opcode; take care
7310 not to destroy the S bit. */
7313 /* Set the opcode according to whether the value to go in the
7314 place is negative. */
7315 if (signed_value
< 0)
7320 /* Encode the offset. */
7323 bfd_put_32 (input_bfd
, insn
, hit_data
);
7325 return bfd_reloc_ok
;
7327 case R_ARM_LDR_PC_G0
:
7328 case R_ARM_LDR_PC_G1
:
7329 case R_ARM_LDR_PC_G2
:
7330 case R_ARM_LDR_SB_G0
:
7331 case R_ARM_LDR_SB_G1
:
7332 case R_ARM_LDR_SB_G2
:
7334 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7335 bfd_vma pc
= input_section
->output_section
->vma
7336 + input_section
->output_offset
+ rel
->r_offset
;
7337 bfd_vma sb
= 0; /* See note above. */
7339 bfd_signed_vma signed_value
;
7342 /* Determine which groups of bits to calculate. */
7345 case R_ARM_LDR_PC_G0
:
7346 case R_ARM_LDR_SB_G0
:
7350 case R_ARM_LDR_PC_G1
:
7351 case R_ARM_LDR_SB_G1
:
7355 case R_ARM_LDR_PC_G2
:
7356 case R_ARM_LDR_SB_G2
:
7364 /* If REL, extract the addend from the insn. If RELA, it will
7365 have already been fetched for us. */
7366 if (globals
->use_rel
)
7368 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7369 signed_addend
= negative
* (insn
& 0xfff);
7372 /* Compute the value (X) to go in the place. */
7373 if (r_type
== R_ARM_LDR_PC_G0
7374 || r_type
== R_ARM_LDR_PC_G1
7375 || r_type
== R_ARM_LDR_PC_G2
)
7377 signed_value
= value
- pc
+ signed_addend
;
7379 /* Section base relative. */
7380 signed_value
= value
- sb
+ signed_addend
;
7382 /* Calculate the value of the relevant G_{n-1} to obtain
7383 the residual at that stage. */
7384 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7386 /* Check for overflow. */
7387 if (residual
>= 0x1000)
7389 (*_bfd_error_handler
)
7390 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7391 input_bfd
, input_section
,
7392 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7393 return bfd_reloc_overflow
;
7396 /* Mask out the value and U bit. */
7399 /* Set the U bit if the value to go in the place is non-negative. */
7400 if (signed_value
>= 0)
7403 /* Encode the offset. */
7406 bfd_put_32 (input_bfd
, insn
, hit_data
);
7408 return bfd_reloc_ok
;
7410 case R_ARM_LDRS_PC_G0
:
7411 case R_ARM_LDRS_PC_G1
:
7412 case R_ARM_LDRS_PC_G2
:
7413 case R_ARM_LDRS_SB_G0
:
7414 case R_ARM_LDRS_SB_G1
:
7415 case R_ARM_LDRS_SB_G2
:
7417 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7418 bfd_vma pc
= input_section
->output_section
->vma
7419 + input_section
->output_offset
+ rel
->r_offset
;
7420 bfd_vma sb
= 0; /* See note above. */
7422 bfd_signed_vma signed_value
;
7425 /* Determine which groups of bits to calculate. */
7428 case R_ARM_LDRS_PC_G0
:
7429 case R_ARM_LDRS_SB_G0
:
7433 case R_ARM_LDRS_PC_G1
:
7434 case R_ARM_LDRS_SB_G1
:
7438 case R_ARM_LDRS_PC_G2
:
7439 case R_ARM_LDRS_SB_G2
:
7447 /* If REL, extract the addend from the insn. If RELA, it will
7448 have already been fetched for us. */
7449 if (globals
->use_rel
)
7451 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7452 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
7455 /* Compute the value (X) to go in the place. */
7456 if (r_type
== R_ARM_LDRS_PC_G0
7457 || r_type
== R_ARM_LDRS_PC_G1
7458 || r_type
== R_ARM_LDRS_PC_G2
)
7460 signed_value
= value
- pc
+ signed_addend
;
7462 /* Section base relative. */
7463 signed_value
= value
- sb
+ signed_addend
;
7465 /* Calculate the value of the relevant G_{n-1} to obtain
7466 the residual at that stage. */
7467 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7469 /* Check for overflow. */
7470 if (residual
>= 0x100)
7472 (*_bfd_error_handler
)
7473 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7474 input_bfd
, input_section
,
7475 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7476 return bfd_reloc_overflow
;
7479 /* Mask out the value and U bit. */
7482 /* Set the U bit if the value to go in the place is non-negative. */
7483 if (signed_value
>= 0)
7486 /* Encode the offset. */
7487 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
7489 bfd_put_32 (input_bfd
, insn
, hit_data
);
7491 return bfd_reloc_ok
;
7493 case R_ARM_LDC_PC_G0
:
7494 case R_ARM_LDC_PC_G1
:
7495 case R_ARM_LDC_PC_G2
:
7496 case R_ARM_LDC_SB_G0
:
7497 case R_ARM_LDC_SB_G1
:
7498 case R_ARM_LDC_SB_G2
:
7500 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7501 bfd_vma pc
= input_section
->output_section
->vma
7502 + input_section
->output_offset
+ rel
->r_offset
;
7503 bfd_vma sb
= 0; /* See note above. */
7505 bfd_signed_vma signed_value
;
7508 /* Determine which groups of bits to calculate. */
7511 case R_ARM_LDC_PC_G0
:
7512 case R_ARM_LDC_SB_G0
:
7516 case R_ARM_LDC_PC_G1
:
7517 case R_ARM_LDC_SB_G1
:
7521 case R_ARM_LDC_PC_G2
:
7522 case R_ARM_LDC_SB_G2
:
7530 /* If REL, extract the addend from the insn. If RELA, it will
7531 have already been fetched for us. */
7532 if (globals
->use_rel
)
7534 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7535 signed_addend
= negative
* ((insn
& 0xff) << 2);
7538 /* Compute the value (X) to go in the place. */
7539 if (r_type
== R_ARM_LDC_PC_G0
7540 || r_type
== R_ARM_LDC_PC_G1
7541 || r_type
== R_ARM_LDC_PC_G2
)
7543 signed_value
= value
- pc
+ signed_addend
;
7545 /* Section base relative. */
7546 signed_value
= value
- sb
+ signed_addend
;
7548 /* Calculate the value of the relevant G_{n-1} to obtain
7549 the residual at that stage. */
7550 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7552 /* Check for overflow. (The absolute value to go in the place must be
7553 divisible by four and, after having been divided by four, must
7554 fit in eight bits.) */
7555 if ((residual
& 0x3) != 0 || residual
>= 0x400)
7557 (*_bfd_error_handler
)
7558 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7559 input_bfd
, input_section
,
7560 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7561 return bfd_reloc_overflow
;
7564 /* Mask out the value and U bit. */
7567 /* Set the U bit if the value to go in the place is non-negative. */
7568 if (signed_value
>= 0)
7571 /* Encode the offset. */
7572 insn
|= residual
>> 2;
7574 bfd_put_32 (input_bfd
, insn
, hit_data
);
7576 return bfd_reloc_ok
;
7579 return bfd_reloc_notsupported
;
7583 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
7585 arm_add_to_rel (bfd
* abfd
,
7587 reloc_howto_type
* howto
,
7588 bfd_signed_vma increment
)
7590 bfd_signed_vma addend
;
7592 if (howto
->type
== R_ARM_THM_CALL
7593 || howto
->type
== R_ARM_THM_JUMP24
)
7595 int upper_insn
, lower_insn
;
7598 upper_insn
= bfd_get_16 (abfd
, address
);
7599 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
7600 upper
= upper_insn
& 0x7ff;
7601 lower
= lower_insn
& 0x7ff;
7603 addend
= (upper
<< 12) | (lower
<< 1);
7604 addend
+= increment
;
7607 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
7608 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
7610 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
7611 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
7617 contents
= bfd_get_32 (abfd
, address
);
7619 /* Get the (signed) value from the instruction. */
7620 addend
= contents
& howto
->src_mask
;
7621 if (addend
& ((howto
->src_mask
+ 1) >> 1))
7623 bfd_signed_vma mask
;
7626 mask
&= ~ howto
->src_mask
;
7630 /* Add in the increment, (which is a byte value). */
7631 switch (howto
->type
)
7634 addend
+= increment
;
7641 addend
<<= howto
->size
;
7642 addend
+= increment
;
7644 /* Should we check for overflow here ? */
7646 /* Drop any undesired bits. */
7647 addend
>>= howto
->rightshift
;
7651 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
7653 bfd_put_32 (abfd
, contents
, address
);
7657 #define IS_ARM_TLS_RELOC(R_TYPE) \
7658 ((R_TYPE) == R_ARM_TLS_GD32 \
7659 || (R_TYPE) == R_ARM_TLS_LDO32 \
7660 || (R_TYPE) == R_ARM_TLS_LDM32 \
7661 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
7662 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
7663 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
7664 || (R_TYPE) == R_ARM_TLS_LE32 \
7665 || (R_TYPE) == R_ARM_TLS_IE32)
7667 /* Relocate an ARM ELF section. */
7670 elf32_arm_relocate_section (bfd
* output_bfd
,
7671 struct bfd_link_info
* info
,
7673 asection
* input_section
,
7674 bfd_byte
* contents
,
7675 Elf_Internal_Rela
* relocs
,
7676 Elf_Internal_Sym
* local_syms
,
7677 asection
** local_sections
)
7679 Elf_Internal_Shdr
*symtab_hdr
;
7680 struct elf_link_hash_entry
**sym_hashes
;
7681 Elf_Internal_Rela
*rel
;
7682 Elf_Internal_Rela
*relend
;
7684 struct elf32_arm_link_hash_table
* globals
;
7686 globals
= elf32_arm_hash_table (info
);
7688 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
7689 sym_hashes
= elf_sym_hashes (input_bfd
);
7692 relend
= relocs
+ input_section
->reloc_count
;
7693 for (; rel
< relend
; rel
++)
7696 reloc_howto_type
* howto
;
7697 unsigned long r_symndx
;
7698 Elf_Internal_Sym
* sym
;
7700 struct elf_link_hash_entry
* h
;
7702 bfd_reloc_status_type r
;
7705 bfd_boolean unresolved_reloc
= FALSE
;
7706 char *error_message
= NULL
;
7708 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7709 r_type
= ELF32_R_TYPE (rel
->r_info
);
7710 r_type
= arm_real_reloc_type (globals
, r_type
);
7712 if ( r_type
== R_ARM_GNU_VTENTRY
7713 || r_type
== R_ARM_GNU_VTINHERIT
)
7716 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
7717 howto
= bfd_reloc
.howto
;
7723 if (r_symndx
< symtab_hdr
->sh_info
)
7725 sym
= local_syms
+ r_symndx
;
7726 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
7727 sec
= local_sections
[r_symndx
];
7728 if (globals
->use_rel
)
7730 relocation
= (sec
->output_section
->vma
7731 + sec
->output_offset
7733 if (!info
->relocatable
7734 && (sec
->flags
& SEC_MERGE
)
7735 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
7738 bfd_vma addend
, value
;
7742 case R_ARM_MOVW_ABS_NC
:
7743 case R_ARM_MOVT_ABS
:
7744 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7745 addend
= ((value
& 0xf0000) >> 4) | (value
& 0xfff);
7746 addend
= (addend
^ 0x8000) - 0x8000;
7749 case R_ARM_THM_MOVW_ABS_NC
:
7750 case R_ARM_THM_MOVT_ABS
:
7751 value
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
)
7753 value
|= bfd_get_16 (input_bfd
,
7754 contents
+ rel
->r_offset
+ 2);
7755 addend
= ((value
& 0xf7000) >> 4) | (value
& 0xff)
7756 | ((value
& 0x04000000) >> 15);
7757 addend
= (addend
^ 0x8000) - 0x8000;
7761 if (howto
->rightshift
7762 || (howto
->src_mask
& (howto
->src_mask
+ 1)))
7764 (*_bfd_error_handler
)
7765 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
7766 input_bfd
, input_section
,
7767 (long) rel
->r_offset
, howto
->name
);
7771 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7773 /* Get the (signed) value from the instruction. */
7774 addend
= value
& howto
->src_mask
;
7775 if (addend
& ((howto
->src_mask
+ 1) >> 1))
7777 bfd_signed_vma mask
;
7780 mask
&= ~ howto
->src_mask
;
7788 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
7790 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
7792 /* Cases here must match those in the preceeding
7793 switch statement. */
7796 case R_ARM_MOVW_ABS_NC
:
7797 case R_ARM_MOVT_ABS
:
7798 value
= (value
& 0xfff0f000) | ((addend
& 0xf000) << 4)
7800 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
7803 case R_ARM_THM_MOVW_ABS_NC
:
7804 case R_ARM_THM_MOVT_ABS
:
7805 value
= (value
& 0xfbf08f00) | ((addend
& 0xf700) << 4)
7806 | (addend
& 0xff) | ((addend
& 0x0800) << 15);
7807 bfd_put_16 (input_bfd
, value
>> 16,
7808 contents
+ rel
->r_offset
);
7809 bfd_put_16 (input_bfd
, value
,
7810 contents
+ rel
->r_offset
+ 2);
7814 value
= (value
& ~ howto
->dst_mask
)
7815 | (addend
& howto
->dst_mask
);
7816 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
7822 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7828 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7829 r_symndx
, symtab_hdr
, sym_hashes
,
7831 unresolved_reloc
, warned
);
7836 if (sec
!= NULL
&& elf_discarded_section (sec
))
7838 /* For relocs against symbols from removed linkonce sections,
7839 or sections discarded by a linker script, we just want the
7840 section contents zeroed. Avoid any special processing. */
7841 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
7847 if (info
->relocatable
)
7849 /* This is a relocatable link. We don't have to change
7850 anything, unless the reloc is against a section symbol,
7851 in which case we have to adjust according to where the
7852 section symbol winds up in the output section. */
7853 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
7855 if (globals
->use_rel
)
7856 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
7857 howto
, (bfd_signed_vma
) sec
->output_offset
);
7859 rel
->r_addend
+= sec
->output_offset
;
7865 name
= h
->root
.root
.string
;
7868 name
= (bfd_elf_string_from_elf_section
7869 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
7870 if (name
== NULL
|| *name
== '\0')
7871 name
= bfd_section_name (input_bfd
, sec
);
7875 && r_type
!= R_ARM_NONE
7877 || h
->root
.type
== bfd_link_hash_defined
7878 || h
->root
.type
== bfd_link_hash_defweak
)
7879 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
7881 (*_bfd_error_handler
)
7882 ((sym_type
== STT_TLS
7883 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
7884 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
7887 (long) rel
->r_offset
,
7892 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
7893 input_section
, contents
, rel
,
7894 relocation
, info
, sec
, name
,
7895 (h
? ELF_ST_TYPE (h
->type
) :
7896 ELF_ST_TYPE (sym
->st_info
)), h
,
7897 &unresolved_reloc
, &error_message
);
7899 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7900 because such sections are not SEC_ALLOC and thus ld.so will
7901 not process them. */
7902 if (unresolved_reloc
7903 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
7906 (*_bfd_error_handler
)
7907 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7910 (long) rel
->r_offset
,
7912 h
->root
.root
.string
);
7916 if (r
!= bfd_reloc_ok
)
7920 case bfd_reloc_overflow
:
7921 /* If the overflowing reloc was to an undefined symbol,
7922 we have already printed one error message and there
7923 is no point complaining again. */
7925 h
->root
.type
!= bfd_link_hash_undefined
)
7926 && (!((*info
->callbacks
->reloc_overflow
)
7927 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
7928 (bfd_vma
) 0, input_bfd
, input_section
,
7933 case bfd_reloc_undefined
:
7934 if (!((*info
->callbacks
->undefined_symbol
)
7935 (info
, name
, input_bfd
, input_section
,
7936 rel
->r_offset
, TRUE
)))
7940 case bfd_reloc_outofrange
:
7941 error_message
= _("out of range");
7944 case bfd_reloc_notsupported
:
7945 error_message
= _("unsupported relocation");
7948 case bfd_reloc_dangerous
:
7949 /* error_message should already be set. */
7953 error_message
= _("unknown error");
7957 BFD_ASSERT (error_message
!= NULL
);
7958 if (!((*info
->callbacks
->reloc_dangerous
)
7959 (info
, error_message
, input_bfd
, input_section
,
7970 /* Set the right machine number. */
7973 elf32_arm_object_p (bfd
*abfd
)
7977 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
7979 if (mach
!= bfd_mach_arm_unknown
)
7980 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
7982 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
7983 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
7986 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
7991 /* Function to keep ARM specific flags in the ELF header. */
7994 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
7996 if (elf_flags_init (abfd
)
7997 && elf_elfheader (abfd
)->e_flags
!= flags
)
7999 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
8001 if (flags
& EF_ARM_INTERWORK
)
8002 (*_bfd_error_handler
)
8003 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
8007 (_("Warning: Clearing the interworking flag of %B due to outside request"),
8013 elf_elfheader (abfd
)->e_flags
= flags
;
8014 elf_flags_init (abfd
) = TRUE
;
8020 /* Copy backend specific data from one object module to another. */
8023 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
8028 if (! is_arm_elf (ibfd
) || ! is_arm_elf (obfd
))
8031 in_flags
= elf_elfheader (ibfd
)->e_flags
;
8032 out_flags
= elf_elfheader (obfd
)->e_flags
;
8034 if (elf_flags_init (obfd
)
8035 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
8036 && in_flags
!= out_flags
)
8038 /* Cannot mix APCS26 and APCS32 code. */
8039 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
8042 /* Cannot mix float APCS and non-float APCS code. */
8043 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
8046 /* If the src and dest have different interworking flags
8047 then turn off the interworking bit. */
8048 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
8050 if (out_flags
& EF_ARM_INTERWORK
)
8052 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
8055 in_flags
&= ~EF_ARM_INTERWORK
;
8058 /* Likewise for PIC, though don't warn for this case. */
8059 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
8060 in_flags
&= ~EF_ARM_PIC
;
8063 elf_elfheader (obfd
)->e_flags
= in_flags
;
8064 elf_flags_init (obfd
) = TRUE
;
8066 /* Also copy the EI_OSABI field. */
8067 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
8068 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
8070 /* Copy object attributes. */
8071 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
8076 /* Values for Tag_ABI_PCS_R9_use. */
8085 /* Values for Tag_ABI_PCS_RW_data. */
8088 AEABI_PCS_RW_data_absolute
,
8089 AEABI_PCS_RW_data_PCrel
,
8090 AEABI_PCS_RW_data_SBrel
,
8091 AEABI_PCS_RW_data_unused
8094 /* Values for Tag_ABI_enum_size. */
8100 AEABI_enum_forced_wide
8103 /* Determine whether an object attribute tag takes an integer, a
8107 elf32_arm_obj_attrs_arg_type (int tag
)
8109 if (tag
== Tag_compatibility
)
8111 else if (tag
== 4 || tag
== 5)
8116 return (tag
& 1) != 0 ? 2 : 1;
8119 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
8120 are conflicting attributes. */
8123 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
8125 obj_attribute
*in_attr
;
8126 obj_attribute
*out_attr
;
8127 obj_attribute_list
*in_list
;
8128 /* Some tags have 0 = don't care, 1 = strong requirement,
8129 2 = weak requirement. */
8130 static const int order_312
[3] = {3, 1, 2};
8131 /* For use with Tag_VFP_arch. */
8132 static const int order_01243
[5] = {0, 1, 2, 4, 3};
8135 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
8137 /* This is the first object. Copy the attributes. */
8138 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
8140 /* Use the Tag_null value to indicate the attributes have been
8142 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
8147 in_attr
= elf_known_obj_attributes_proc (ibfd
);
8148 out_attr
= elf_known_obj_attributes_proc (obfd
);
8149 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
8150 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
8152 /* Ignore mismatches if teh object doesn't use floating point. */
8153 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
8154 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
8155 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
8158 (_("ERROR: %B uses VFP register arguments, %B does not"),
8164 for (i
= 4; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
8166 /* Merge this attribute with existing attributes. */
8169 case Tag_CPU_raw_name
:
8171 /* Use whichever has the greatest architecture requirements. We
8172 won't necessarily have both the above tags, so make sure input
8173 name is non-NULL. */
8174 if (in_attr
[Tag_CPU_arch
].i
> out_attr
[Tag_CPU_arch
].i
8176 out_attr
[i
].s
= _bfd_elf_attr_strdup (obfd
, in_attr
[i
].s
);
8179 case Tag_ABI_optimization_goals
:
8180 case Tag_ABI_FP_optimization_goals
:
8181 /* Use the first value seen. */
8185 case Tag_ARM_ISA_use
:
8186 case Tag_THUMB_ISA_use
:
8189 /* ??? Do NEON and WMMX conflict? */
8190 case Tag_ABI_FP_rounding
:
8191 case Tag_ABI_FP_denormal
:
8192 case Tag_ABI_FP_exceptions
:
8193 case Tag_ABI_FP_user_exceptions
:
8194 case Tag_ABI_FP_number_model
:
8195 case Tag_ABI_align8_preserved
:
8196 case Tag_ABI_HardFP_use
:
8197 /* Use the largest value specified. */
8198 if (in_attr
[i
].i
> out_attr
[i
].i
)
8199 out_attr
[i
].i
= in_attr
[i
].i
;
8202 case Tag_CPU_arch_profile
:
8203 /* Warn if conflicting architecture profiles used. */
8204 if (out_attr
[i
].i
&& in_attr
[i
].i
&& in_attr
[i
].i
!= out_attr
[i
].i
)
8207 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
8208 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
8212 out_attr
[i
].i
= in_attr
[i
].i
;
8215 if (in_attr
[i
].i
> 4 || out_attr
[i
].i
> 4
8216 || order_01243
[in_attr
[i
].i
] > order_01243
[out_attr
[i
].i
])
8217 out_attr
[i
].i
= in_attr
[i
].i
;
8219 case Tag_PCS_config
:
8220 if (out_attr
[i
].i
== 0)
8221 out_attr
[i
].i
= in_attr
[i
].i
;
8222 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
8224 /* It's sometimes ok to mix different configs, so this is only
8227 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
8230 case Tag_ABI_PCS_R9_use
:
8231 if (in_attr
[i
].i
!= out_attr
[i
].i
8232 && out_attr
[i
].i
!= AEABI_R9_unused
8233 && in_attr
[i
].i
!= AEABI_R9_unused
)
8236 (_("ERROR: %B: Conflicting use of R9"), ibfd
);
8239 if (out_attr
[i
].i
== AEABI_R9_unused
)
8240 out_attr
[i
].i
= in_attr
[i
].i
;
8242 case Tag_ABI_PCS_RW_data
:
8243 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
8244 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
8245 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
8248 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
8252 /* Use the smallest value specified. */
8253 if (in_attr
[i
].i
< out_attr
[i
].i
)
8254 out_attr
[i
].i
= in_attr
[i
].i
;
8256 case Tag_ABI_PCS_RO_data
:
8257 /* Use the smallest value specified. */
8258 if (in_attr
[i
].i
< out_attr
[i
].i
)
8259 out_attr
[i
].i
= in_attr
[i
].i
;
8261 case Tag_ABI_PCS_GOT_use
:
8262 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
8263 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
8264 out_attr
[i
].i
= in_attr
[i
].i
;
8266 case Tag_ABI_PCS_wchar_t
:
8267 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
)
8270 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd
);
8274 out_attr
[i
].i
= in_attr
[i
].i
;
8276 case Tag_ABI_align8_needed
:
8277 /* ??? Check against Tag_ABI_align8_preserved. */
8278 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
8279 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
8280 out_attr
[i
].i
= in_attr
[i
].i
;
8282 case Tag_ABI_enum_size
:
8283 if (in_attr
[i
].i
!= AEABI_enum_unused
)
8285 if (out_attr
[i
].i
== AEABI_enum_unused
8286 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
8288 /* The existing object is compatible with anything.
8289 Use whatever requirements the new object has. */
8290 out_attr
[i
].i
= in_attr
[i
].i
;
8292 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
8293 && out_attr
[i
].i
!= in_attr
[i
].i
8294 && !elf_arm_tdata (obfd
)->no_enum_size_warning
)
8296 const char *aeabi_enum_names
[] =
8297 { "", "variable-size", "32-bit", "" };
8299 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
8300 ibfd
, aeabi_enum_names
[in_attr
[i
].i
],
8301 aeabi_enum_names
[out_attr
[i
].i
]);
8305 case Tag_ABI_VFP_args
:
8308 case Tag_ABI_WMMX_args
:
8309 if (in_attr
[i
].i
!= out_attr
[i
].i
)
8312 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
8317 default: /* All known attributes should be explicitly covered. */
8321 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
8322 switch (in_attr
[i
].type
)
8326 out_attr
[i
].type
= 1;
8331 out_attr
[i
].type
= 2;
8339 /* Merge Tag_compatibility attributes and any common GNU ones. */
8340 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
8342 /* Check for any attributes not known on ARM. */
8343 in_list
= elf_other_obj_attributes_proc (ibfd
);
8344 while (in_list
&& in_list
->tag
== Tag_compatibility
)
8345 in_list
= in_list
->next
;
8347 for (; in_list
; in_list
= in_list
->next
)
8349 if ((in_list
->tag
& 128) < 64)
8352 (_("Warning: %B: Unknown EABI object attribute %d"),
8353 ibfd
, in_list
->tag
);
8361 /* Return TRUE if the two EABI versions are incompatible. */
8364 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
8366 /* v4 and v5 are the same spec before and after it was released,
8367 so allow mixing them. */
8368 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
8369 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
8372 return (iver
== over
);
8375 /* Merge backend specific data from an object file to the output
8376 object file when linking. */
8379 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
8383 bfd_boolean flags_compatible
= TRUE
;
8386 /* Check if we have the same endianess. */
8387 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
8390 if (! is_arm_elf (ibfd
) || ! is_arm_elf (obfd
))
8393 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
8396 /* The input BFD must have had its flags initialised. */
8397 /* The following seems bogus to me -- The flags are initialized in
8398 the assembler but I don't think an elf_flags_init field is
8399 written into the object. */
8400 /* BFD_ASSERT (elf_flags_init (ibfd)); */
8402 in_flags
= elf_elfheader (ibfd
)->e_flags
;
8403 out_flags
= elf_elfheader (obfd
)->e_flags
;
8405 /* In theory there is no reason why we couldn't handle this. However
8406 in practice it isn't even close to working and there is no real
8407 reason to want it. */
8408 if (EF_ARM_EABI_VERSION (in_flags
) >= EF_ARM_EABI_VER4
8409 && !(ibfd
->flags
& DYNAMIC
)
8410 && (in_flags
& EF_ARM_BE8
))
8412 _bfd_error_handler (_("ERROR: %B is already in final BE8 format"),
8417 if (!elf_flags_init (obfd
))
8419 /* If the input is the default architecture and had the default
8420 flags then do not bother setting the flags for the output
8421 architecture, instead allow future merges to do this. If no
8422 future merges ever set these flags then they will retain their
8423 uninitialised values, which surprise surprise, correspond
8424 to the default values. */
8425 if (bfd_get_arch_info (ibfd
)->the_default
8426 && elf_elfheader (ibfd
)->e_flags
== 0)
8429 elf_flags_init (obfd
) = TRUE
;
8430 elf_elfheader (obfd
)->e_flags
= in_flags
;
8432 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
8433 && bfd_get_arch_info (obfd
)->the_default
)
8434 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
8439 /* Determine what should happen if the input ARM architecture
8440 does not match the output ARM architecture. */
8441 if (! bfd_arm_merge_machines (ibfd
, obfd
))
8444 /* Identical flags must be compatible. */
8445 if (in_flags
== out_flags
)
8448 /* Check to see if the input BFD actually contains any sections. If
8449 not, its flags may not have been initialised either, but it
8450 cannot actually cause any incompatiblity. Do not short-circuit
8451 dynamic objects; their section list may be emptied by
8452 elf_link_add_object_symbols.
8454 Also check to see if there are no code sections in the input.
8455 In this case there is no need to check for code specific flags.
8456 XXX - do we need to worry about floating-point format compatability
8457 in data sections ? */
8458 if (!(ibfd
->flags
& DYNAMIC
))
8460 bfd_boolean null_input_bfd
= TRUE
;
8461 bfd_boolean only_data_sections
= TRUE
;
8463 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8465 /* Ignore synthetic glue sections. */
8466 if (strcmp (sec
->name
, ".glue_7")
8467 && strcmp (sec
->name
, ".glue_7t"))
8469 if ((bfd_get_section_flags (ibfd
, sec
)
8470 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
8471 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
8472 only_data_sections
= FALSE
;
8474 null_input_bfd
= FALSE
;
8479 if (null_input_bfd
|| only_data_sections
)
8483 /* Complain about various flag mismatches. */
8484 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
8485 EF_ARM_EABI_VERSION (out_flags
)))
8488 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
8490 (in_flags
& EF_ARM_EABIMASK
) >> 24,
8491 (out_flags
& EF_ARM_EABIMASK
) >> 24);
8495 /* Not sure what needs to be checked for EABI versions >= 1. */
8496 /* VxWorks libraries do not use these flags. */
8497 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
8498 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
8499 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
8501 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
8504 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
8506 in_flags
& EF_ARM_APCS_26
? 26 : 32,
8507 out_flags
& EF_ARM_APCS_26
? 26 : 32);
8508 flags_compatible
= FALSE
;
8511 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
8513 if (in_flags
& EF_ARM_APCS_FLOAT
)
8515 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
8519 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
8522 flags_compatible
= FALSE
;
8525 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
8527 if (in_flags
& EF_ARM_VFP_FLOAT
)
8529 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
8533 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
8536 flags_compatible
= FALSE
;
8539 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
8541 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
8543 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
8547 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
8550 flags_compatible
= FALSE
;
8553 #ifdef EF_ARM_SOFT_FLOAT
8554 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
8556 /* We can allow interworking between code that is VFP format
8557 layout, and uses either soft float or integer regs for
8558 passing floating point arguments and results. We already
8559 know that the APCS_FLOAT flags match; similarly for VFP
8561 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
8562 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
8564 if (in_flags
& EF_ARM_SOFT_FLOAT
)
8566 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
8570 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
8573 flags_compatible
= FALSE
;
8578 /* Interworking mismatch is only a warning. */
8579 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
8581 if (in_flags
& EF_ARM_INTERWORK
)
8584 (_("Warning: %B supports interworking, whereas %B does not"),
8590 (_("Warning: %B does not support interworking, whereas %B does"),
8596 return flags_compatible
;
8599 /* Display the flags field. */
8602 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
8604 FILE * file
= (FILE *) ptr
;
8605 unsigned long flags
;
8607 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
8609 /* Print normal ELF private data. */
8610 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
8612 flags
= elf_elfheader (abfd
)->e_flags
;
8613 /* Ignore init flag - it may not be set, despite the flags field
8614 containing valid data. */
8616 /* xgettext:c-format */
8617 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
8619 switch (EF_ARM_EABI_VERSION (flags
))
8621 case EF_ARM_EABI_UNKNOWN
:
8622 /* The following flag bits are GNU extensions and not part of the
8623 official ARM ELF extended ABI. Hence they are only decoded if
8624 the EABI version is not set. */
8625 if (flags
& EF_ARM_INTERWORK
)
8626 fprintf (file
, _(" [interworking enabled]"));
8628 if (flags
& EF_ARM_APCS_26
)
8629 fprintf (file
, " [APCS-26]");
8631 fprintf (file
, " [APCS-32]");
8633 if (flags
& EF_ARM_VFP_FLOAT
)
8634 fprintf (file
, _(" [VFP float format]"));
8635 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
8636 fprintf (file
, _(" [Maverick float format]"));
8638 fprintf (file
, _(" [FPA float format]"));
8640 if (flags
& EF_ARM_APCS_FLOAT
)
8641 fprintf (file
, _(" [floats passed in float registers]"));
8643 if (flags
& EF_ARM_PIC
)
8644 fprintf (file
, _(" [position independent]"));
8646 if (flags
& EF_ARM_NEW_ABI
)
8647 fprintf (file
, _(" [new ABI]"));
8649 if (flags
& EF_ARM_OLD_ABI
)
8650 fprintf (file
, _(" [old ABI]"));
8652 if (flags
& EF_ARM_SOFT_FLOAT
)
8653 fprintf (file
, _(" [software FP]"));
8655 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
8656 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
8657 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
8658 | EF_ARM_MAVERICK_FLOAT
);
8661 case EF_ARM_EABI_VER1
:
8662 fprintf (file
, _(" [Version1 EABI]"));
8664 if (flags
& EF_ARM_SYMSARESORTED
)
8665 fprintf (file
, _(" [sorted symbol table]"));
8667 fprintf (file
, _(" [unsorted symbol table]"));
8669 flags
&= ~ EF_ARM_SYMSARESORTED
;
8672 case EF_ARM_EABI_VER2
:
8673 fprintf (file
, _(" [Version2 EABI]"));
8675 if (flags
& EF_ARM_SYMSARESORTED
)
8676 fprintf (file
, _(" [sorted symbol table]"));
8678 fprintf (file
, _(" [unsorted symbol table]"));
8680 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
8681 fprintf (file
, _(" [dynamic symbols use segment index]"));
8683 if (flags
& EF_ARM_MAPSYMSFIRST
)
8684 fprintf (file
, _(" [mapping symbols precede others]"));
8686 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
8687 | EF_ARM_MAPSYMSFIRST
);
8690 case EF_ARM_EABI_VER3
:
8691 fprintf (file
, _(" [Version3 EABI]"));
8694 case EF_ARM_EABI_VER4
:
8695 fprintf (file
, _(" [Version4 EABI]"));
8698 case EF_ARM_EABI_VER5
:
8699 fprintf (file
, _(" [Version5 EABI]"));
8701 if (flags
& EF_ARM_BE8
)
8702 fprintf (file
, _(" [BE8]"));
8704 if (flags
& EF_ARM_LE8
)
8705 fprintf (file
, _(" [LE8]"));
8707 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
8711 fprintf (file
, _(" <EABI version unrecognised>"));
8715 flags
&= ~ EF_ARM_EABIMASK
;
8717 if (flags
& EF_ARM_RELEXEC
)
8718 fprintf (file
, _(" [relocatable executable]"));
8720 if (flags
& EF_ARM_HASENTRY
)
8721 fprintf (file
, _(" [has entry point]"));
8723 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
8726 fprintf (file
, _("<Unrecognised flag bits set>"));
8734 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
8736 switch (ELF_ST_TYPE (elf_sym
->st_info
))
8739 return ELF_ST_TYPE (elf_sym
->st_info
);
8742 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
8743 This allows us to distinguish between data used by Thumb instructions
8744 and non-data (which is probably code) inside Thumb regions of an
8746 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
8747 return ELF_ST_TYPE (elf_sym
->st_info
);
8758 elf32_arm_gc_mark_hook (asection
*sec
,
8759 struct bfd_link_info
*info
,
8760 Elf_Internal_Rela
*rel
,
8761 struct elf_link_hash_entry
*h
,
8762 Elf_Internal_Sym
*sym
)
8765 switch (ELF32_R_TYPE (rel
->r_info
))
8767 case R_ARM_GNU_VTINHERIT
:
8768 case R_ARM_GNU_VTENTRY
:
8772 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
8775 /* Update the got entry reference counts for the section being removed. */
8778 elf32_arm_gc_sweep_hook (bfd
* abfd
,
8779 struct bfd_link_info
* info
,
8781 const Elf_Internal_Rela
* relocs
)
8783 Elf_Internal_Shdr
*symtab_hdr
;
8784 struct elf_link_hash_entry
**sym_hashes
;
8785 bfd_signed_vma
*local_got_refcounts
;
8786 const Elf_Internal_Rela
*rel
, *relend
;
8787 struct elf32_arm_link_hash_table
* globals
;
8789 if (info
->relocatable
)
8792 globals
= elf32_arm_hash_table (info
);
8794 elf_section_data (sec
)->local_dynrel
= NULL
;
8796 symtab_hdr
= & elf_symtab_hdr (abfd
);
8797 sym_hashes
= elf_sym_hashes (abfd
);
8798 local_got_refcounts
= elf_local_got_refcounts (abfd
);
8800 check_use_blx (globals
);
8802 relend
= relocs
+ sec
->reloc_count
;
8803 for (rel
= relocs
; rel
< relend
; rel
++)
8805 unsigned long r_symndx
;
8806 struct elf_link_hash_entry
*h
= NULL
;
8809 r_symndx
= ELF32_R_SYM (rel
->r_info
);
8810 if (r_symndx
>= symtab_hdr
->sh_info
)
8812 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8813 while (h
->root
.type
== bfd_link_hash_indirect
8814 || h
->root
.type
== bfd_link_hash_warning
)
8815 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8818 r_type
= ELF32_R_TYPE (rel
->r_info
);
8819 r_type
= arm_real_reloc_type (globals
, r_type
);
8823 case R_ARM_GOT_PREL
:
8824 case R_ARM_TLS_GD32
:
8825 case R_ARM_TLS_IE32
:
8828 if (h
->got
.refcount
> 0)
8829 h
->got
.refcount
-= 1;
8831 else if (local_got_refcounts
!= NULL
)
8833 if (local_got_refcounts
[r_symndx
] > 0)
8834 local_got_refcounts
[r_symndx
] -= 1;
8838 case R_ARM_TLS_LDM32
:
8839 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
8843 case R_ARM_ABS32_NOI
:
8845 case R_ARM_REL32_NOI
:
8851 case R_ARM_THM_CALL
:
8852 case R_ARM_THM_JUMP24
:
8853 case R_ARM_THM_JUMP19
:
8854 case R_ARM_MOVW_ABS_NC
:
8855 case R_ARM_MOVT_ABS
:
8856 case R_ARM_MOVW_PREL_NC
:
8857 case R_ARM_MOVT_PREL
:
8858 case R_ARM_THM_MOVW_ABS_NC
:
8859 case R_ARM_THM_MOVT_ABS
:
8860 case R_ARM_THM_MOVW_PREL_NC
:
8861 case R_ARM_THM_MOVT_PREL
:
8862 /* Should the interworking branches be here also? */
8866 struct elf32_arm_link_hash_entry
*eh
;
8867 struct elf32_arm_relocs_copied
**pp
;
8868 struct elf32_arm_relocs_copied
*p
;
8870 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8872 if (h
->plt
.refcount
> 0)
8874 h
->plt
.refcount
-= 1;
8875 if (r_type
== R_ARM_THM_CALL
)
8876 eh
->plt_maybe_thumb_refcount
--;
8878 if (r_type
== R_ARM_THM_JUMP24
8879 || r_type
== R_ARM_THM_JUMP19
)
8880 eh
->plt_thumb_refcount
--;
8883 if (r_type
== R_ARM_ABS32
8884 || r_type
== R_ARM_REL32
8885 || r_type
== R_ARM_ABS32_NOI
8886 || r_type
== R_ARM_REL32_NOI
)
8888 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
8890 if (p
->section
== sec
)
8893 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
8894 || ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32_NOI
)
8912 /* Look through the relocs for a section during the first phase. */
8915 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
8916 asection
*sec
, const Elf_Internal_Rela
*relocs
)
8918 Elf_Internal_Shdr
*symtab_hdr
;
8919 struct elf_link_hash_entry
**sym_hashes
;
8920 const Elf_Internal_Rela
*rel
;
8921 const Elf_Internal_Rela
*rel_end
;
8924 bfd_vma
*local_got_offsets
;
8925 struct elf32_arm_link_hash_table
*htab
;
8926 bfd_boolean needs_plt
;
8928 if (info
->relocatable
)
8931 BFD_ASSERT (is_arm_elf (abfd
));
8933 htab
= elf32_arm_hash_table (info
);
8936 /* Create dynamic sections for relocatable executables so that we can
8937 copy relocations. */
8938 if (htab
->root
.is_relocatable_executable
8939 && ! htab
->root
.dynamic_sections_created
)
8941 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
8945 dynobj
= elf_hash_table (info
)->dynobj
;
8946 local_got_offsets
= elf_local_got_offsets (abfd
);
8948 symtab_hdr
= & elf_symtab_hdr (abfd
);
8949 sym_hashes
= elf_sym_hashes (abfd
);
8951 rel_end
= relocs
+ sec
->reloc_count
;
8952 for (rel
= relocs
; rel
< rel_end
; rel
++)
8954 struct elf_link_hash_entry
*h
;
8955 struct elf32_arm_link_hash_entry
*eh
;
8956 unsigned long r_symndx
;
8959 r_symndx
= ELF32_R_SYM (rel
->r_info
);
8960 r_type
= ELF32_R_TYPE (rel
->r_info
);
8961 r_type
= arm_real_reloc_type (htab
, r_type
);
8963 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
8965 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
8970 if (r_symndx
< symtab_hdr
->sh_info
)
8974 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8975 while (h
->root
.type
== bfd_link_hash_indirect
8976 || h
->root
.type
== bfd_link_hash_warning
)
8977 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8980 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8985 case R_ARM_GOT_PREL
:
8986 case R_ARM_TLS_GD32
:
8987 case R_ARM_TLS_IE32
:
8988 /* This symbol requires a global offset table entry. */
8990 int tls_type
, old_tls_type
;
8994 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
8995 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
8996 default: tls_type
= GOT_NORMAL
; break;
9002 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
9006 bfd_signed_vma
*local_got_refcounts
;
9008 /* This is a global offset table entry for a local symbol. */
9009 local_got_refcounts
= elf_local_got_refcounts (abfd
);
9010 if (local_got_refcounts
== NULL
)
9014 size
= symtab_hdr
->sh_info
;
9015 size
*= (sizeof (bfd_signed_vma
) + sizeof (char));
9016 local_got_refcounts
= bfd_zalloc (abfd
, size
);
9017 if (local_got_refcounts
== NULL
)
9019 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
9020 elf32_arm_local_got_tls_type (abfd
)
9021 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
9023 local_got_refcounts
[r_symndx
] += 1;
9024 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
9027 /* We will already have issued an error message if there is a
9028 TLS / non-TLS mismatch, based on the symbol type. We don't
9029 support any linker relaxations. So just combine any TLS
9031 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
9032 && tls_type
!= GOT_NORMAL
)
9033 tls_type
|= old_tls_type
;
9035 if (old_tls_type
!= tls_type
)
9038 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
9040 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
9045 case R_ARM_TLS_LDM32
:
9046 if (r_type
== R_ARM_TLS_LDM32
)
9047 htab
->tls_ldm_got
.refcount
++;
9050 case R_ARM_GOTOFF32
:
9052 if (htab
->sgot
== NULL
)
9054 if (htab
->root
.dynobj
== NULL
)
9055 htab
->root
.dynobj
= abfd
;
9056 if (!create_got_section (htab
->root
.dynobj
, info
))
9062 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
9063 ldr __GOTT_INDEX__ offsets. */
9064 if (!htab
->vxworks_p
)
9073 case R_ARM_THM_CALL
:
9074 case R_ARM_THM_JUMP24
:
9075 case R_ARM_THM_JUMP19
:
9080 case R_ARM_ABS32_NOI
:
9082 case R_ARM_REL32_NOI
:
9083 case R_ARM_MOVW_ABS_NC
:
9084 case R_ARM_MOVT_ABS
:
9085 case R_ARM_MOVW_PREL_NC
:
9086 case R_ARM_MOVT_PREL
:
9087 case R_ARM_THM_MOVW_ABS_NC
:
9088 case R_ARM_THM_MOVT_ABS
:
9089 case R_ARM_THM_MOVW_PREL_NC
:
9090 case R_ARM_THM_MOVT_PREL
:
9094 /* Should the interworking branches be listed here? */
9097 /* If this reloc is in a read-only section, we might
9098 need a copy reloc. We can't check reliably at this
9099 stage whether the section is read-only, as input
9100 sections have not yet been mapped to output sections.
9101 Tentatively set the flag for now, and correct in
9102 adjust_dynamic_symbol. */
9106 /* We may need a .plt entry if the function this reloc
9107 refers to is in a different object. We can't tell for
9108 sure yet, because something later might force the
9113 /* If we create a PLT entry, this relocation will reference
9114 it, even if it's an ABS32 relocation. */
9115 h
->plt
.refcount
+= 1;
9117 /* It's too early to use htab->use_blx here, so we have to
9118 record possible blx references separately from
9119 relocs that definitely need a thumb stub. */
9121 if (r_type
== R_ARM_THM_CALL
)
9122 eh
->plt_maybe_thumb_refcount
+= 1;
9124 if (r_type
== R_ARM_THM_JUMP24
9125 || r_type
== R_ARM_THM_JUMP19
)
9126 eh
->plt_thumb_refcount
+= 1;
9129 /* If we are creating a shared library or relocatable executable,
9130 and this is a reloc against a global symbol, or a non PC
9131 relative reloc against a local symbol, then we need to copy
9132 the reloc into the shared library. However, if we are linking
9133 with -Bsymbolic, we do not need to copy a reloc against a
9134 global symbol which is defined in an object we are
9135 including in the link (i.e., DEF_REGULAR is set). At
9136 this point we have not seen all the input files, so it is
9137 possible that DEF_REGULAR is not set now but will be set
9138 later (it is never cleared). We account for that
9139 possibility below by storing information in the
9140 relocs_copied field of the hash table entry. */
9141 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
9142 && (sec
->flags
& SEC_ALLOC
) != 0
9143 && ((r_type
== R_ARM_ABS32
|| r_type
== R_ARM_ABS32_NOI
)
9144 || (h
!= NULL
&& ! h
->needs_plt
9145 && (! info
->symbolic
|| ! h
->def_regular
))))
9147 struct elf32_arm_relocs_copied
*p
, **head
;
9149 /* When creating a shared object, we must copy these
9150 reloc types into the output file. We create a reloc
9151 section in dynobj and make room for this reloc. */
9156 name
= (bfd_elf_string_from_elf_section
9158 elf_elfheader (abfd
)->e_shstrndx
,
9159 elf_section_data (sec
)->rel_hdr
.sh_name
));
9163 BFD_ASSERT (reloc_section_p (htab
, name
, sec
));
9165 sreloc
= bfd_get_section_by_name (dynobj
, name
);
9170 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
9171 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
9172 if ((sec
->flags
& SEC_ALLOC
) != 0
9173 /* BPABI objects never have dynamic
9174 relocations mapped. */
9175 && !htab
->symbian_p
)
9176 flags
|= SEC_ALLOC
| SEC_LOAD
;
9177 sreloc
= bfd_make_section_with_flags (dynobj
,
9181 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
9185 elf_section_data (sec
)->sreloc
= sreloc
;
9188 /* If this is a global symbol, we count the number of
9189 relocations we need for this symbol. */
9192 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
9196 /* Track dynamic relocs needed for local syms too.
9197 We really need local syms available to do this
9203 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
9208 vpp
= &elf_section_data (s
)->local_dynrel
;
9209 head
= (struct elf32_arm_relocs_copied
**) vpp
;
9213 if (p
== NULL
|| p
->section
!= sec
)
9215 bfd_size_type amt
= sizeof *p
;
9217 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
9227 if (r_type
== R_ARM_REL32
|| r_type
== R_ARM_REL32_NOI
)
9233 /* This relocation describes the C++ object vtable hierarchy.
9234 Reconstruct it for later use during GC. */
9235 case R_ARM_GNU_VTINHERIT
:
9236 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
9240 /* This relocation describes which C++ vtable entries are actually
9241 used. Record for later use during GC. */
9242 case R_ARM_GNU_VTENTRY
:
9243 BFD_ASSERT (h
!= NULL
);
9245 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
9254 /* Unwinding tables are not referenced directly. This pass marks them as
9255 required if the corresponding code section is marked. */
9258 elf32_arm_gc_mark_extra_sections (struct bfd_link_info
*info
,
9259 elf_gc_mark_hook_fn gc_mark_hook
)
9262 Elf_Internal_Shdr
**elf_shdrp
;
9265 /* Marking EH data may cause additional code sections to be marked,
9266 requiring multiple passes. */
9271 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
9275 if (! is_arm_elf (sub
))
9278 elf_shdrp
= elf_elfsections (sub
);
9279 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
9281 Elf_Internal_Shdr
*hdr
;
9283 hdr
= &elf_section_data (o
)->this_hdr
;
9284 if (hdr
->sh_type
== SHT_ARM_EXIDX
9286 && hdr
->sh_link
< elf_numsections (sub
)
9288 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
9291 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
9301 /* Treat mapping symbols as special target symbols. */
9304 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
9306 return bfd_is_arm_special_symbol_name (sym
->name
,
9307 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
9310 /* This is a copy of elf_find_function() from elf.c except that
9311 ARM mapping symbols are ignored when looking for function names
9312 and STT_ARM_TFUNC is considered to a function type. */
9315 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
9319 const char ** filename_ptr
,
9320 const char ** functionname_ptr
)
9322 const char * filename
= NULL
;
9323 asymbol
* func
= NULL
;
9324 bfd_vma low_func
= 0;
9327 for (p
= symbols
; *p
!= NULL
; p
++)
9331 q
= (elf_symbol_type
*) *p
;
9333 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
9338 filename
= bfd_asymbol_name (&q
->symbol
);
9343 /* Skip mapping symbols. */
9344 if ((q
->symbol
.flags
& BSF_LOCAL
)
9345 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
9346 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
9349 if (bfd_get_section (&q
->symbol
) == section
9350 && q
->symbol
.value
>= low_func
9351 && q
->symbol
.value
<= offset
)
9353 func
= (asymbol
*) q
;
9354 low_func
= q
->symbol
.value
;
9364 *filename_ptr
= filename
;
9365 if (functionname_ptr
)
9366 *functionname_ptr
= bfd_asymbol_name (func
);
9372 /* Find the nearest line to a particular section and offset, for error
9373 reporting. This code is a duplicate of the code in elf.c, except
9374 that it uses arm_elf_find_function. */
9377 elf32_arm_find_nearest_line (bfd
* abfd
,
9381 const char ** filename_ptr
,
9382 const char ** functionname_ptr
,
9383 unsigned int * line_ptr
)
9385 bfd_boolean found
= FALSE
;
9387 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
9389 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
9390 filename_ptr
, functionname_ptr
,
9392 & elf_tdata (abfd
)->dwarf2_find_line_info
))
9394 if (!*functionname_ptr
)
9395 arm_elf_find_function (abfd
, section
, symbols
, offset
,
9396 *filename_ptr
? NULL
: filename_ptr
,
9402 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
9403 & found
, filename_ptr
,
9404 functionname_ptr
, line_ptr
,
9405 & elf_tdata (abfd
)->line_info
))
9408 if (found
&& (*functionname_ptr
|| *line_ptr
))
9411 if (symbols
== NULL
)
9414 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
9415 filename_ptr
, functionname_ptr
))
9423 elf32_arm_find_inliner_info (bfd
* abfd
,
9424 const char ** filename_ptr
,
9425 const char ** functionname_ptr
,
9426 unsigned int * line_ptr
)
9429 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
9430 functionname_ptr
, line_ptr
,
9431 & elf_tdata (abfd
)->dwarf2_find_line_info
);
9435 /* Adjust a symbol defined by a dynamic object and referenced by a
9436 regular object. The current definition is in some section of the
9437 dynamic object, but we're not including those sections. We have to
9438 change the definition to something the rest of the link can
9442 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
9443 struct elf_link_hash_entry
* h
)
9447 struct elf32_arm_link_hash_entry
* eh
;
9448 struct elf32_arm_link_hash_table
*globals
;
9450 globals
= elf32_arm_hash_table (info
);
9451 dynobj
= elf_hash_table (info
)->dynobj
;
9453 /* Make sure we know what is going on here. */
9454 BFD_ASSERT (dynobj
!= NULL
9456 || h
->u
.weakdef
!= NULL
9459 && !h
->def_regular
)));
9461 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9463 /* If this is a function, put it in the procedure linkage table. We
9464 will fill in the contents of the procedure linkage table later,
9465 when we know the address of the .got section. */
9466 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
9469 if (h
->plt
.refcount
<= 0
9470 || SYMBOL_CALLS_LOCAL (info
, h
)
9471 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
9472 && h
->root
.type
== bfd_link_hash_undefweak
))
9474 /* This case can occur if we saw a PLT32 reloc in an input
9475 file, but the symbol was never referred to by a dynamic
9476 object, or if all references were garbage collected. In
9477 such a case, we don't actually need to build a procedure
9478 linkage table, and we can just do a PC24 reloc instead. */
9479 h
->plt
.offset
= (bfd_vma
) -1;
9480 eh
->plt_thumb_refcount
= 0;
9481 eh
->plt_maybe_thumb_refcount
= 0;
9489 /* It's possible that we incorrectly decided a .plt reloc was
9490 needed for an R_ARM_PC24 or similar reloc to a non-function sym
9491 in check_relocs. We can't decide accurately between function
9492 and non-function syms in check-relocs; Objects loaded later in
9493 the link may change h->type. So fix it now. */
9494 h
->plt
.offset
= (bfd_vma
) -1;
9495 eh
->plt_thumb_refcount
= 0;
9496 eh
->plt_maybe_thumb_refcount
= 0;
9499 /* If this is a weak symbol, and there is a real definition, the
9500 processor independent code will have arranged for us to see the
9501 real definition first, and we can just use the same value. */
9502 if (h
->u
.weakdef
!= NULL
)
9504 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
9505 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
9506 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
9507 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
9511 /* If there are no non-GOT references, we do not need a copy
9513 if (!h
->non_got_ref
)
9516 /* This is a reference to a symbol defined by a dynamic object which
9517 is not a function. */
9519 /* If we are creating a shared library, we must presume that the
9520 only references to the symbol are via the global offset table.
9521 For such cases we need not do anything here; the relocations will
9522 be handled correctly by relocate_section. Relocatable executables
9523 can reference data in shared objects directly, so we don't need to
9524 do anything here. */
9525 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
9530 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
9531 h
->root
.root
.string
);
9535 /* We must allocate the symbol in our .dynbss section, which will
9536 become part of the .bss section of the executable. There will be
9537 an entry for this symbol in the .dynsym section. The dynamic
9538 object will contain position independent code, so all references
9539 from the dynamic object to this symbol will go through the global
9540 offset table. The dynamic linker will use the .dynsym entry to
9541 determine the address it must put in the global offset table, so
9542 both the dynamic object and the regular object will refer to the
9543 same memory location for the variable. */
9544 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
9545 BFD_ASSERT (s
!= NULL
);
9547 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
9548 copy the initial value out of the dynamic object and into the
9549 runtime process image. We need to remember the offset into the
9550 .rel(a).bss section we are going to use. */
9551 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
9555 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
9556 BFD_ASSERT (srel
!= NULL
);
9557 srel
->size
+= RELOC_SIZE (globals
);
9561 return _bfd_elf_adjust_dynamic_copy (h
, s
);
9564 /* Allocate space in .plt, .got and associated reloc sections for
9568 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
9570 struct bfd_link_info
*info
;
9571 struct elf32_arm_link_hash_table
*htab
;
9572 struct elf32_arm_link_hash_entry
*eh
;
9573 struct elf32_arm_relocs_copied
*p
;
9574 bfd_signed_vma thumb_refs
;
9576 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9578 if (h
->root
.type
== bfd_link_hash_indirect
)
9581 if (h
->root
.type
== bfd_link_hash_warning
)
9582 /* When warning symbols are created, they **replace** the "real"
9583 entry in the hash table, thus we never get to see the real
9584 symbol in a hash traversal. So look at it now. */
9585 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9587 info
= (struct bfd_link_info
*) inf
;
9588 htab
= elf32_arm_hash_table (info
);
9590 if (htab
->root
.dynamic_sections_created
9591 && h
->plt
.refcount
> 0)
9593 /* Make sure this symbol is output as a dynamic symbol.
9594 Undefined weak syms won't yet be marked as dynamic. */
9595 if (h
->dynindx
== -1
9596 && !h
->forced_local
)
9598 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9603 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
9605 asection
*s
= htab
->splt
;
9607 /* If this is the first .plt entry, make room for the special
9610 s
->size
+= htab
->plt_header_size
;
9612 h
->plt
.offset
= s
->size
;
9614 /* If we will insert a Thumb trampoline before this PLT, leave room
9616 thumb_refs
= eh
->plt_thumb_refcount
;
9618 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
9622 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
9623 s
->size
+= PLT_THUMB_STUB_SIZE
;
9626 /* If this symbol is not defined in a regular file, and we are
9627 not generating a shared library, then set the symbol to this
9628 location in the .plt. This is required to make function
9629 pointers compare as equal between the normal executable and
9630 the shared library. */
9634 h
->root
.u
.def
.section
= s
;
9635 h
->root
.u
.def
.value
= h
->plt
.offset
;
9637 /* Make sure the function is not marked as Thumb, in case
9638 it is the target of an ABS32 relocation, which will
9639 point to the PLT entry. */
9640 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
9641 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
9644 /* Make room for this entry. */
9645 s
->size
+= htab
->plt_entry_size
;
9647 if (!htab
->symbian_p
)
9649 /* We also need to make an entry in the .got.plt section, which
9650 will be placed in the .got section by the linker script. */
9651 eh
->plt_got_offset
= htab
->sgotplt
->size
;
9652 htab
->sgotplt
->size
+= 4;
9655 /* We also need to make an entry in the .rel(a).plt section. */
9656 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
9658 /* VxWorks executables have a second set of relocations for
9659 each PLT entry. They go in a separate relocation section,
9660 which is processed by the kernel loader. */
9661 if (htab
->vxworks_p
&& !info
->shared
)
9663 /* There is a relocation for the initial PLT entry:
9664 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
9665 if (h
->plt
.offset
== htab
->plt_header_size
)
9666 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
9668 /* There are two extra relocations for each subsequent
9669 PLT entry: an R_ARM_32 relocation for the GOT entry,
9670 and an R_ARM_32 relocation for the PLT entry. */
9671 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
9676 h
->plt
.offset
= (bfd_vma
) -1;
9682 h
->plt
.offset
= (bfd_vma
) -1;
9686 if (h
->got
.refcount
> 0)
9690 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
9693 /* Make sure this symbol is output as a dynamic symbol.
9694 Undefined weak syms won't yet be marked as dynamic. */
9695 if (h
->dynindx
== -1
9696 && !h
->forced_local
)
9698 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9702 if (!htab
->symbian_p
)
9705 h
->got
.offset
= s
->size
;
9707 if (tls_type
== GOT_UNKNOWN
)
9710 if (tls_type
== GOT_NORMAL
)
9711 /* Non-TLS symbols need one GOT slot. */
9715 if (tls_type
& GOT_TLS_GD
)
9716 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
9718 if (tls_type
& GOT_TLS_IE
)
9719 /* R_ARM_TLS_IE32 needs one GOT slot. */
9723 dyn
= htab
->root
.dynamic_sections_created
;
9726 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
9728 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9731 if (tls_type
!= GOT_NORMAL
9732 && (info
->shared
|| indx
!= 0)
9733 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9734 || h
->root
.type
!= bfd_link_hash_undefweak
))
9736 if (tls_type
& GOT_TLS_IE
)
9737 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
9739 if (tls_type
& GOT_TLS_GD
)
9740 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
9742 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
9743 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
9745 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9746 || h
->root
.type
!= bfd_link_hash_undefweak
)
9748 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
9749 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
9753 h
->got
.offset
= (bfd_vma
) -1;
9755 /* Allocate stubs for exported Thumb functions on v4t. */
9756 if (!htab
->use_blx
&& h
->dynindx
!= -1
9758 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
9759 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9761 struct elf_link_hash_entry
* th
;
9762 struct bfd_link_hash_entry
* bh
;
9763 struct elf_link_hash_entry
* myh
;
9767 /* Create a new symbol to regist the real location of the function. */
9768 s
= h
->root
.u
.def
.section
;
9769 sprintf (name
, "__real_%s", h
->root
.root
.string
);
9770 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
9771 name
, BSF_GLOBAL
, s
,
9772 h
->root
.u
.def
.value
,
9773 NULL
, TRUE
, FALSE
, &bh
);
9775 myh
= (struct elf_link_hash_entry
*) bh
;
9776 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
9777 myh
->forced_local
= 1;
9778 eh
->export_glue
= myh
;
9779 th
= record_arm_to_thumb_glue (info
, h
);
9780 /* Point the symbol at the stub. */
9781 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
9782 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
9783 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
9786 if (eh
->relocs_copied
== NULL
)
9789 /* In the shared -Bsymbolic case, discard space allocated for
9790 dynamic pc-relative relocs against symbols which turn out to be
9791 defined in regular objects. For the normal shared case, discard
9792 space for pc-relative relocs that have become local due to symbol
9793 visibility changes. */
9795 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
9797 /* The only relocs that use pc_count are R_ARM_REL32 and
9798 R_ARM_REL32_NOI, which will appear on something like
9799 ".long foo - .". We want calls to protected symbols to resolve
9800 directly to the function rather than going via the plt. If people
9801 want function pointer comparisons to work as expected then they
9802 should avoid writing assembly like ".long foo - .". */
9803 if (SYMBOL_CALLS_LOCAL (info
, h
))
9805 struct elf32_arm_relocs_copied
**pp
;
9807 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
9809 p
->count
-= p
->pc_count
;
9818 if (elf32_arm_hash_table (info
)->vxworks_p
)
9820 struct elf32_arm_relocs_copied
**pp
;
9822 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
9824 if (strcmp (p
->section
->output_section
->name
, ".tls_vars") == 0)
9831 /* Also discard relocs on undefined weak syms with non-default
9833 if (eh
->relocs_copied
!= NULL
9834 && h
->root
.type
== bfd_link_hash_undefweak
)
9836 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9837 eh
->relocs_copied
= NULL
;
9839 /* Make sure undefined weak symbols are output as a dynamic
9841 else if (h
->dynindx
== -1
9842 && !h
->forced_local
)
9844 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9849 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
9850 && h
->root
.type
== bfd_link_hash_new
)
9852 /* Output absolute symbols so that we can create relocations
9853 against them. For normal symbols we output a relocation
9854 against the section that contains them. */
9855 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9862 /* For the non-shared case, discard space for relocs against
9863 symbols which turn out to need copy relocs or are not
9869 || (htab
->root
.dynamic_sections_created
9870 && (h
->root
.type
== bfd_link_hash_undefweak
9871 || h
->root
.type
== bfd_link_hash_undefined
))))
9873 /* Make sure this symbol is output as a dynamic symbol.
9874 Undefined weak syms won't yet be marked as dynamic. */
9875 if (h
->dynindx
== -1
9876 && !h
->forced_local
)
9878 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9882 /* If that succeeded, we know we'll be keeping all the
9884 if (h
->dynindx
!= -1)
9888 eh
->relocs_copied
= NULL
;
9893 /* Finally, allocate space. */
9894 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
9896 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
9897 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
9903 /* Find any dynamic relocs that apply to read-only sections. */
9906 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
*h
, PTR inf
)
9908 struct elf32_arm_link_hash_entry
*eh
;
9909 struct elf32_arm_relocs_copied
*p
;
9911 if (h
->root
.type
== bfd_link_hash_warning
)
9912 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9914 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9915 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
9917 asection
*s
= p
->section
;
9919 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
9921 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
9923 info
->flags
|= DF_TEXTREL
;
9925 /* Not an error, just cut short the traversal. */
9933 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info
*info
,
9936 struct elf32_arm_link_hash_table
*globals
;
9938 globals
= elf32_arm_hash_table (info
);
9939 globals
->byteswap_code
= byteswap_code
;
9942 /* Set the sizes of the dynamic sections. */
9945 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
9946 struct bfd_link_info
* info
)
9953 struct elf32_arm_link_hash_table
*htab
;
9955 htab
= elf32_arm_hash_table (info
);
9956 dynobj
= elf_hash_table (info
)->dynobj
;
9957 BFD_ASSERT (dynobj
!= NULL
);
9958 check_use_blx (htab
);
9960 if (elf_hash_table (info
)->dynamic_sections_created
)
9962 /* Set the contents of the .interp section to the interpreter. */
9963 if (info
->executable
)
9965 s
= bfd_get_section_by_name (dynobj
, ".interp");
9966 BFD_ASSERT (s
!= NULL
);
9967 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9968 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9972 /* Set up .got offsets for local syms, and space for local dynamic
9974 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9976 bfd_signed_vma
*local_got
;
9977 bfd_signed_vma
*end_local_got
;
9978 char *local_tls_type
;
9979 bfd_size_type locsymcount
;
9980 Elf_Internal_Shdr
*symtab_hdr
;
9982 bfd_boolean is_vxworks
= elf32_arm_hash_table (info
)->vxworks_p
;
9984 if (! is_arm_elf (ibfd
))
9987 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9989 struct elf32_arm_relocs_copied
*p
;
9991 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9993 if (!bfd_is_abs_section (p
->section
)
9994 && bfd_is_abs_section (p
->section
->output_section
))
9996 /* Input section has been discarded, either because
9997 it is a copy of a linkonce section or due to
9998 linker script /DISCARD/, so we'll be discarding
10001 else if (is_vxworks
10002 && strcmp (p
->section
->output_section
->name
,
10005 /* Relocations in vxworks .tls_vars sections are
10006 handled specially by the loader. */
10008 else if (p
->count
!= 0)
10010 srel
= elf_section_data (p
->section
)->sreloc
;
10011 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
10012 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
10013 info
->flags
|= DF_TEXTREL
;
10018 local_got
= elf_local_got_refcounts (ibfd
);
10022 symtab_hdr
= & elf_symtab_hdr (ibfd
);
10023 locsymcount
= symtab_hdr
->sh_info
;
10024 end_local_got
= local_got
+ locsymcount
;
10025 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
10027 srel
= htab
->srelgot
;
10028 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
10030 if (*local_got
> 0)
10032 *local_got
= s
->size
;
10033 if (*local_tls_type
& GOT_TLS_GD
)
10034 /* TLS_GD relocs need an 8-byte structure in the GOT. */
10036 if (*local_tls_type
& GOT_TLS_IE
)
10038 if (*local_tls_type
== GOT_NORMAL
)
10041 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
10042 srel
->size
+= RELOC_SIZE (htab
);
10045 *local_got
= (bfd_vma
) -1;
10049 if (htab
->tls_ldm_got
.refcount
> 0)
10051 /* Allocate two GOT entries and one dynamic relocation (if necessary)
10052 for R_ARM_TLS_LDM32 relocations. */
10053 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
10054 htab
->sgot
->size
+= 8;
10056 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10059 htab
->tls_ldm_got
.offset
= -1;
10061 /* Allocate global sym .plt and .got entries, and space for global
10062 sym dynamic relocs. */
10063 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
10065 /* Here we rummage through the found bfds to collect glue information. */
10066 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10068 if (! is_arm_elf (ibfd
))
10071 /* Initialise mapping tables for code/data. */
10072 bfd_elf32_arm_init_maps (ibfd
);
10074 if (!bfd_elf32_arm_process_before_allocation (ibfd
, info
)
10075 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd
, info
))
10076 /* xgettext:c-format */
10077 _bfd_error_handler (_("Errors encountered processing file %s"),
10081 /* The check_relocs and adjust_dynamic_symbol entry points have
10082 determined the sizes of the various dynamic sections. Allocate
10083 memory for them. */
10086 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10090 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10093 /* It's OK to base decisions on the section name, because none
10094 of the dynobj section names depend upon the input files. */
10095 name
= bfd_get_section_name (dynobj
, s
);
10097 if (strcmp (name
, ".plt") == 0)
10099 /* Remember whether there is a PLT. */
10100 plt
= s
->size
!= 0;
10102 else if (CONST_STRNEQ (name
, ".rel"))
10106 /* Remember whether there are any reloc sections other
10107 than .rel(a).plt and .rela.plt.unloaded. */
10108 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
10111 /* We use the reloc_count field as a counter if we need
10112 to copy relocs into the output file. */
10113 s
->reloc_count
= 0;
10116 else if (! CONST_STRNEQ (name
, ".got")
10117 && strcmp (name
, ".dynbss") != 0)
10119 /* It's not one of our sections, so don't allocate space. */
10125 /* If we don't need this section, strip it from the
10126 output file. This is mostly to handle .rel(a).bss and
10127 .rel(a).plt. We must create both sections in
10128 create_dynamic_sections, because they must be created
10129 before the linker maps input sections to output
10130 sections. The linker does that before
10131 adjust_dynamic_symbol is called, and it is that
10132 function which decides whether anything needs to go
10133 into these sections. */
10134 s
->flags
|= SEC_EXCLUDE
;
10138 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10141 /* Allocate memory for the section contents. */
10142 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10143 if (s
->contents
== NULL
)
10147 if (elf_hash_table (info
)->dynamic_sections_created
)
10149 /* Add some entries to the .dynamic section. We fill in the
10150 values later, in elf32_arm_finish_dynamic_sections, but we
10151 must add the entries now so that we get the correct size for
10152 the .dynamic section. The DT_DEBUG entry is filled in by the
10153 dynamic linker and used by the debugger. */
10154 #define add_dynamic_entry(TAG, VAL) \
10155 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10157 if (info
->executable
)
10159 if (!add_dynamic_entry (DT_DEBUG
, 0))
10165 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
10166 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10167 || !add_dynamic_entry (DT_PLTREL
,
10168 htab
->use_rel
? DT_REL
: DT_RELA
)
10169 || !add_dynamic_entry (DT_JMPREL
, 0))
10177 if (!add_dynamic_entry (DT_REL
, 0)
10178 || !add_dynamic_entry (DT_RELSZ
, 0)
10179 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
10184 if (!add_dynamic_entry (DT_RELA
, 0)
10185 || !add_dynamic_entry (DT_RELASZ
, 0)
10186 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
10191 /* If any dynamic relocs apply to a read-only section,
10192 then we need a DT_TEXTREL entry. */
10193 if ((info
->flags
& DF_TEXTREL
) == 0)
10194 elf_link_hash_traverse (&htab
->root
, elf32_arm_readonly_dynrelocs
,
10197 if ((info
->flags
& DF_TEXTREL
) != 0)
10199 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10202 if (htab
->vxworks_p
10203 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
10206 #undef add_dynamic_entry
10211 /* Finish up dynamic symbol handling. We set the contents of various
10212 dynamic sections here. */
10215 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
,
10216 struct bfd_link_info
* info
,
10217 struct elf_link_hash_entry
* h
,
10218 Elf_Internal_Sym
* sym
)
10221 struct elf32_arm_link_hash_table
*htab
;
10222 struct elf32_arm_link_hash_entry
*eh
;
10224 dynobj
= elf_hash_table (info
)->dynobj
;
10225 htab
= elf32_arm_hash_table (info
);
10226 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10228 if (h
->plt
.offset
!= (bfd_vma
) -1)
10234 Elf_Internal_Rela rel
;
10236 /* This symbol has an entry in the procedure linkage table. Set
10239 BFD_ASSERT (h
->dynindx
!= -1);
10241 splt
= bfd_get_section_by_name (dynobj
, ".plt");
10242 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
10243 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
10245 /* Fill in the entry in the procedure linkage table. */
10246 if (htab
->symbian_p
)
10248 put_arm_insn (htab
, output_bfd
,
10249 elf32_arm_symbian_plt_entry
[0],
10250 splt
->contents
+ h
->plt
.offset
);
10251 bfd_put_32 (output_bfd
,
10252 elf32_arm_symbian_plt_entry
[1],
10253 splt
->contents
+ h
->plt
.offset
+ 4);
10255 /* Fill in the entry in the .rel.plt section. */
10256 rel
.r_offset
= (splt
->output_section
->vma
10257 + splt
->output_offset
10258 + h
->plt
.offset
+ 4);
10259 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
10261 /* Get the index in the procedure linkage table which
10262 corresponds to this symbol. This is the index of this symbol
10263 in all the symbols for which we are making plt entries. The
10264 first entry in the procedure linkage table is reserved. */
10265 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
10266 / htab
->plt_entry_size
);
10270 bfd_vma got_offset
, got_address
, plt_address
;
10271 bfd_vma got_displacement
;
10275 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
10276 BFD_ASSERT (sgot
!= NULL
);
10278 /* Get the offset into the .got.plt table of the entry that
10279 corresponds to this function. */
10280 got_offset
= eh
->plt_got_offset
;
10282 /* Get the index in the procedure linkage table which
10283 corresponds to this symbol. This is the index of this symbol
10284 in all the symbols for which we are making plt entries. The
10285 first three entries in .got.plt are reserved; after that
10286 symbols appear in the same order as in .plt. */
10287 plt_index
= (got_offset
- 12) / 4;
10289 /* Calculate the address of the GOT entry. */
10290 got_address
= (sgot
->output_section
->vma
10291 + sgot
->output_offset
10294 /* ...and the address of the PLT entry. */
10295 plt_address
= (splt
->output_section
->vma
10296 + splt
->output_offset
10299 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
10300 if (htab
->vxworks_p
&& info
->shared
)
10305 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
10307 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
10309 val
|= got_address
- sgot
->output_section
->vma
;
10311 val
|= plt_index
* RELOC_SIZE (htab
);
10312 if (i
== 2 || i
== 5)
10313 bfd_put_32 (output_bfd
, val
, ptr
);
10315 put_arm_insn (htab
, output_bfd
, val
, ptr
);
10318 else if (htab
->vxworks_p
)
10323 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
10325 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
10327 val
|= got_address
;
10329 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
10331 val
|= plt_index
* RELOC_SIZE (htab
);
10332 if (i
== 2 || i
== 5)
10333 bfd_put_32 (output_bfd
, val
, ptr
);
10335 put_arm_insn (htab
, output_bfd
, val
, ptr
);
10338 loc
= (htab
->srelplt2
->contents
10339 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
10341 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
10342 referencing the GOT for this PLT entry. */
10343 rel
.r_offset
= plt_address
+ 8;
10344 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
10345 rel
.r_addend
= got_offset
;
10346 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10347 loc
+= RELOC_SIZE (htab
);
10349 /* Create the R_ARM_ABS32 relocation referencing the
10350 beginning of the PLT for this GOT entry. */
10351 rel
.r_offset
= got_address
;
10352 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
10354 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10358 bfd_signed_vma thumb_refs
;
10359 /* Calculate the displacement between the PLT slot and the
10360 entry in the GOT. The eight-byte offset accounts for the
10361 value produced by adding to pc in the first instruction
10362 of the PLT stub. */
10363 got_displacement
= got_address
- (plt_address
+ 8);
10365 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
10367 thumb_refs
= eh
->plt_thumb_refcount
;
10368 if (!htab
->use_blx
)
10369 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
10371 if (thumb_refs
> 0)
10373 put_thumb_insn (htab
, output_bfd
,
10374 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
10375 put_thumb_insn (htab
, output_bfd
,
10376 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
10379 put_arm_insn (htab
, output_bfd
,
10380 elf32_arm_plt_entry
[0]
10381 | ((got_displacement
& 0x0ff00000) >> 20),
10383 put_arm_insn (htab
, output_bfd
,
10384 elf32_arm_plt_entry
[1]
10385 | ((got_displacement
& 0x000ff000) >> 12),
10387 put_arm_insn (htab
, output_bfd
,
10388 elf32_arm_plt_entry
[2]
10389 | (got_displacement
& 0x00000fff),
10391 #ifdef FOUR_WORD_PLT
10392 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
10396 /* Fill in the entry in the global offset table. */
10397 bfd_put_32 (output_bfd
,
10398 (splt
->output_section
->vma
10399 + splt
->output_offset
),
10400 sgot
->contents
+ got_offset
);
10402 /* Fill in the entry in the .rel(a).plt section. */
10404 rel
.r_offset
= got_address
;
10405 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
10408 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
10409 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10411 if (!h
->def_regular
)
10413 /* Mark the symbol as undefined, rather than as defined in
10414 the .plt section. Leave the value alone. */
10415 sym
->st_shndx
= SHN_UNDEF
;
10416 /* If the symbol is weak, we do need to clear the value.
10417 Otherwise, the PLT entry would provide a definition for
10418 the symbol even if the symbol wasn't defined anywhere,
10419 and so the symbol would never be NULL. */
10420 if (!h
->ref_regular_nonweak
)
10425 if (h
->got
.offset
!= (bfd_vma
) -1
10426 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
10427 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
10431 Elf_Internal_Rela rel
;
10435 /* This symbol has an entry in the global offset table. Set it
10437 sgot
= bfd_get_section_by_name (dynobj
, ".got");
10438 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
10439 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
10441 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
10443 rel
.r_offset
= (sgot
->output_section
->vma
10444 + sgot
->output_offset
10447 /* If this is a static link, or it is a -Bsymbolic link and the
10448 symbol is defined locally or was forced to be local because
10449 of a version file, we just want to emit a RELATIVE reloc.
10450 The entry in the global offset table will already have been
10451 initialized in the relocate_section function. */
10453 && SYMBOL_REFERENCES_LOCAL (info
, h
))
10455 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
10456 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
10457 if (!htab
->use_rel
)
10459 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
10460 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
10465 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
10466 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
10467 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
10470 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
10471 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10477 Elf_Internal_Rela rel
;
10480 /* This symbol needs a copy reloc. Set it up. */
10481 BFD_ASSERT (h
->dynindx
!= -1
10482 && (h
->root
.type
== bfd_link_hash_defined
10483 || h
->root
.type
== bfd_link_hash_defweak
));
10485 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
10486 RELOC_SECTION (htab
, ".bss"));
10487 BFD_ASSERT (s
!= NULL
);
10490 rel
.r_offset
= (h
->root
.u
.def
.value
10491 + h
->root
.u
.def
.section
->output_section
->vma
10492 + h
->root
.u
.def
.section
->output_offset
);
10493 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
10494 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
10495 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10498 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
10499 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
10500 to the ".got" section. */
10501 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
10502 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
10503 sym
->st_shndx
= SHN_ABS
;
10508 /* Finish up the dynamic sections. */
10511 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
10517 dynobj
= elf_hash_table (info
)->dynobj
;
10519 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
10520 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
10521 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
10523 if (elf_hash_table (info
)->dynamic_sections_created
)
10526 Elf32_External_Dyn
*dyncon
, *dynconend
;
10527 struct elf32_arm_link_hash_table
*htab
;
10529 htab
= elf32_arm_hash_table (info
);
10530 splt
= bfd_get_section_by_name (dynobj
, ".plt");
10531 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
10533 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
10534 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10536 for (; dyncon
< dynconend
; dyncon
++)
10538 Elf_Internal_Dyn dyn
;
10542 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10549 if (htab
->vxworks_p
10550 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
10551 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10556 goto get_vma_if_bpabi
;
10559 goto get_vma_if_bpabi
;
10562 goto get_vma_if_bpabi
;
10564 name
= ".gnu.version";
10565 goto get_vma_if_bpabi
;
10567 name
= ".gnu.version_d";
10568 goto get_vma_if_bpabi
;
10570 name
= ".gnu.version_r";
10571 goto get_vma_if_bpabi
;
10577 name
= RELOC_SECTION (htab
, ".plt");
10579 s
= bfd_get_section_by_name (output_bfd
, name
);
10580 BFD_ASSERT (s
!= NULL
);
10581 if (!htab
->symbian_p
)
10582 dyn
.d_un
.d_ptr
= s
->vma
;
10584 /* In the BPABI, tags in the PT_DYNAMIC section point
10585 at the file offset, not the memory address, for the
10586 convenience of the post linker. */
10587 dyn
.d_un
.d_ptr
= s
->filepos
;
10588 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10592 if (htab
->symbian_p
)
10597 s
= bfd_get_section_by_name (output_bfd
,
10598 RELOC_SECTION (htab
, ".plt"));
10599 BFD_ASSERT (s
!= NULL
);
10600 dyn
.d_un
.d_val
= s
->size
;
10601 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10606 if (!htab
->symbian_p
)
10608 /* My reading of the SVR4 ABI indicates that the
10609 procedure linkage table relocs (DT_JMPREL) should be
10610 included in the overall relocs (DT_REL). This is
10611 what Solaris does. However, UnixWare can not handle
10612 that case. Therefore, we override the DT_RELSZ entry
10613 here to make it not include the JMPREL relocs. Since
10614 the linker script arranges for .rel(a).plt to follow all
10615 other relocation sections, we don't have to worry
10616 about changing the DT_REL entry. */
10617 s
= bfd_get_section_by_name (output_bfd
,
10618 RELOC_SECTION (htab
, ".plt"));
10620 dyn
.d_un
.d_val
-= s
->size
;
10621 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10628 /* In the BPABI, the DT_REL tag must point at the file
10629 offset, not the VMA, of the first relocation
10630 section. So, we use code similar to that in
10631 elflink.c, but do not check for SHF_ALLOC on the
10632 relcoation section, since relocations sections are
10633 never allocated under the BPABI. The comments above
10634 about Unixware notwithstanding, we include all of the
10635 relocations here. */
10636 if (htab
->symbian_p
)
10639 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
10640 ? SHT_REL
: SHT_RELA
);
10641 dyn
.d_un
.d_val
= 0;
10642 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
10644 Elf_Internal_Shdr
*hdr
10645 = elf_elfsections (output_bfd
)[i
];
10646 if (hdr
->sh_type
== type
)
10648 if (dyn
.d_tag
== DT_RELSZ
10649 || dyn
.d_tag
== DT_RELASZ
)
10650 dyn
.d_un
.d_val
+= hdr
->sh_size
;
10651 else if ((ufile_ptr
) hdr
->sh_offset
10652 <= dyn
.d_un
.d_val
- 1)
10653 dyn
.d_un
.d_val
= hdr
->sh_offset
;
10656 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10660 /* Set the bottom bit of DT_INIT/FINI if the
10661 corresponding function is Thumb. */
10663 name
= info
->init_function
;
10666 name
= info
->fini_function
;
10668 /* If it wasn't set by elf_bfd_final_link
10669 then there is nothing to adjust. */
10670 if (dyn
.d_un
.d_val
!= 0)
10672 struct elf_link_hash_entry
* eh
;
10674 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
10675 FALSE
, FALSE
, TRUE
);
10677 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
10679 dyn
.d_un
.d_val
|= 1;
10680 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10687 /* Fill in the first entry in the procedure linkage table. */
10688 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
10690 const bfd_vma
*plt0_entry
;
10691 bfd_vma got_address
, plt_address
, got_displacement
;
10693 /* Calculate the addresses of the GOT and PLT. */
10694 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
10695 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
10697 if (htab
->vxworks_p
)
10699 /* The VxWorks GOT is relocated by the dynamic linker.
10700 Therefore, we must emit relocations rather than simply
10701 computing the values now. */
10702 Elf_Internal_Rela rel
;
10704 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
10705 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
10706 splt
->contents
+ 0);
10707 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
10708 splt
->contents
+ 4);
10709 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
10710 splt
->contents
+ 8);
10711 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
10713 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
10714 rel
.r_offset
= plt_address
+ 12;
10715 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
10717 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
10718 htab
->srelplt2
->contents
);
10722 got_displacement
= got_address
- (plt_address
+ 16);
10724 plt0_entry
= elf32_arm_plt0_entry
;
10725 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
10726 splt
->contents
+ 0);
10727 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
10728 splt
->contents
+ 4);
10729 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
10730 splt
->contents
+ 8);
10731 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
10732 splt
->contents
+ 12);
10734 #ifdef FOUR_WORD_PLT
10735 /* The displacement value goes in the otherwise-unused
10736 last word of the second entry. */
10737 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
10739 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
10744 /* UnixWare sets the entsize of .plt to 4, although that doesn't
10745 really seem like the right value. */
10746 if (splt
->output_section
->owner
== output_bfd
)
10747 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
10749 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
10751 /* Correct the .rel(a).plt.unloaded relocations. They will have
10752 incorrect symbol indexes. */
10756 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
10757 / htab
->plt_entry_size
);
10758 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
10760 for (; num_plts
; num_plts
--)
10762 Elf_Internal_Rela rel
;
10764 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
10765 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
10766 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
10767 p
+= RELOC_SIZE (htab
);
10769 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
10770 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
10771 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
10772 p
+= RELOC_SIZE (htab
);
10777 /* Fill in the first three entries in the global offset table. */
10780 if (sgot
->size
> 0)
10783 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
10785 bfd_put_32 (output_bfd
,
10786 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
10788 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
10789 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
10792 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
10799 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
10801 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
10802 struct elf32_arm_link_hash_table
*globals
;
10804 i_ehdrp
= elf_elfheader (abfd
);
10806 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
10807 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
10809 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
10810 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
10814 globals
= elf32_arm_hash_table (link_info
);
10815 if (globals
->byteswap_code
)
10816 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
10820 static enum elf_reloc_type_class
10821 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
10823 switch ((int) ELF32_R_TYPE (rela
->r_info
))
10825 case R_ARM_RELATIVE
:
10826 return reloc_class_relative
;
10827 case R_ARM_JUMP_SLOT
:
10828 return reloc_class_plt
;
10830 return reloc_class_copy
;
10832 return reloc_class_normal
;
10836 /* Set the right machine number for an Arm ELF file. */
10839 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
10841 if (hdr
->sh_type
== SHT_NOTE
)
10842 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
10848 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
10850 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
10853 /* Return TRUE if this is an unwinding table entry. */
10856 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
10858 return (CONST_STRNEQ (name
, ELF_STRING_ARM_unwind
)
10859 || CONST_STRNEQ (name
, ELF_STRING_ARM_unwind_once
));
10863 /* Set the type and flags for an ARM section. We do this by
10864 the section name, which is a hack, but ought to work. */
10867 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
10871 name
= bfd_get_section_name (abfd
, sec
);
10873 if (is_arm_elf_unwind_section_name (abfd
, name
))
10875 hdr
->sh_type
= SHT_ARM_EXIDX
;
10876 hdr
->sh_flags
|= SHF_LINK_ORDER
;
10881 /* Handle an ARM specific section when reading an object file. This is
10882 called when bfd_section_from_shdr finds a section with an unknown
10886 elf32_arm_section_from_shdr (bfd
*abfd
,
10887 Elf_Internal_Shdr
* hdr
,
10891 /* There ought to be a place to keep ELF backend specific flags, but
10892 at the moment there isn't one. We just keep track of the
10893 sections by their name, instead. Fortunately, the ABI gives
10894 names for all the ARM specific sections, so we will probably get
10896 switch (hdr
->sh_type
)
10898 case SHT_ARM_EXIDX
:
10899 case SHT_ARM_PREEMPTMAP
:
10900 case SHT_ARM_ATTRIBUTES
:
10907 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
10913 /* A structure used to record a list of sections, independently
10914 of the next and prev fields in the asection structure. */
10915 typedef struct section_list
10918 struct section_list
* next
;
10919 struct section_list
* prev
;
10923 /* Unfortunately we need to keep a list of sections for which
10924 an _arm_elf_section_data structure has been allocated. This
10925 is because it is possible for functions like elf32_arm_write_section
10926 to be called on a section which has had an elf_data_structure
10927 allocated for it (and so the used_by_bfd field is valid) but
10928 for which the ARM extended version of this structure - the
10929 _arm_elf_section_data structure - has not been allocated. */
10930 static section_list
* sections_with_arm_elf_section_data
= NULL
;
10933 record_section_with_arm_elf_section_data (asection
* sec
)
10935 struct section_list
* entry
;
10937 entry
= bfd_malloc (sizeof (* entry
));
10941 entry
->next
= sections_with_arm_elf_section_data
;
10942 entry
->prev
= NULL
;
10943 if (entry
->next
!= NULL
)
10944 entry
->next
->prev
= entry
;
10945 sections_with_arm_elf_section_data
= entry
;
10948 static struct section_list
*
10949 find_arm_elf_section_entry (asection
* sec
)
10951 struct section_list
* entry
;
10952 static struct section_list
* last_entry
= NULL
;
10954 /* This is a short cut for the typical case where the sections are added
10955 to the sections_with_arm_elf_section_data list in forward order and
10956 then looked up here in backwards order. This makes a real difference
10957 to the ld-srec/sec64k.exp linker test. */
10958 entry
= sections_with_arm_elf_section_data
;
10959 if (last_entry
!= NULL
)
10961 if (last_entry
->sec
== sec
)
10962 entry
= last_entry
;
10963 else if (last_entry
->next
!= NULL
10964 && last_entry
->next
->sec
== sec
)
10965 entry
= last_entry
->next
;
10968 for (; entry
; entry
= entry
->next
)
10969 if (entry
->sec
== sec
)
10973 /* Record the entry prior to this one - it is the entry we are most
10974 likely to want to locate next time. Also this way if we have been
10975 called from unrecord_section_with_arm_elf_section_data() we will not
10976 be caching a pointer that is about to be freed. */
10977 last_entry
= entry
->prev
;
10982 static _arm_elf_section_data
*
10983 get_arm_elf_section_data (asection
* sec
)
10985 struct section_list
* entry
;
10987 entry
= find_arm_elf_section_entry (sec
);
10990 return elf32_arm_section_data (entry
->sec
);
10996 unrecord_section_with_arm_elf_section_data (asection
* sec
)
10998 struct section_list
* entry
;
11000 entry
= find_arm_elf_section_entry (sec
);
11004 if (entry
->prev
!= NULL
)
11005 entry
->prev
->next
= entry
->next
;
11006 if (entry
->next
!= NULL
)
11007 entry
->next
->prev
= entry
->prev
;
11008 if (entry
== sections_with_arm_elf_section_data
)
11009 sections_with_arm_elf_section_data
= entry
->next
;
11018 struct bfd_link_info
*info
;
11021 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
11022 asection
*, struct elf_link_hash_entry
*);
11023 } output_arch_syminfo
;
11025 enum map_symbol_type
11033 /* Output a single PLT mapping symbol. */
11036 elf32_arm_ouput_plt_map_sym (output_arch_syminfo
*osi
,
11037 enum map_symbol_type type
,
11040 static const char *names
[3] = {"$a", "$t", "$d"};
11041 struct elf32_arm_link_hash_table
*htab
;
11042 Elf_Internal_Sym sym
;
11044 htab
= elf32_arm_hash_table (osi
->info
);
11045 sym
.st_value
= osi
->sec
->output_section
->vma
11046 + osi
->sec
->output_offset
11050 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
11051 sym
.st_shndx
= osi
->sec_shndx
;
11052 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
))
11058 /* Output mapping symbols for PLT entries associated with H. */
11061 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
11063 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
11064 struct elf32_arm_link_hash_table
*htab
;
11065 struct elf32_arm_link_hash_entry
*eh
;
11068 htab
= elf32_arm_hash_table (osi
->info
);
11070 if (h
->root
.type
== bfd_link_hash_indirect
)
11073 if (h
->root
.type
== bfd_link_hash_warning
)
11074 /* When warning symbols are created, they **replace** the "real"
11075 entry in the hash table, thus we never get to see the real
11076 symbol in a hash traversal. So look at it now. */
11077 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
11079 if (h
->plt
.offset
== (bfd_vma
) -1)
11082 eh
= (struct elf32_arm_link_hash_entry
*) h
;
11083 addr
= h
->plt
.offset
;
11084 if (htab
->symbian_p
)
11086 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11088 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
11091 else if (htab
->vxworks_p
)
11093 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11095 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
11097 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
11099 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
11104 bfd_signed_vma thumb_refs
;
11106 thumb_refs
= eh
->plt_thumb_refcount
;
11107 if (!htab
->use_blx
)
11108 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
11110 if (thumb_refs
> 0)
11112 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
11115 #ifdef FOUR_WORD_PLT
11116 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11118 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
11121 /* A three-word PLT with no Thumb thunk contains only Arm code,
11122 so only need to output a mapping symbol for the first PLT entry and
11123 entries with thumb thunks. */
11124 if (thumb_refs
> 0 || addr
== 20)
11126 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11137 arm_map_one_stub (struct bfd_hash_entry
*gen_entry
,
11140 struct elf32_arm_stub_hash_entry
*stub_entry
;
11141 struct bfd_link_info
*info
;
11142 struct elf32_arm_link_hash_table
*htab
;
11143 asection
*stub_sec
;
11146 /* Massage our args to the form they really have. */
11147 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
11149 output_arch_syminfo
*osi
= (output_arch_syminfo
*) in_arg
;
11152 htab
= elf32_arm_hash_table (info
);
11153 stub_sec
= stub_entry
->stub_sec
;
11155 /* Ensure this stub is attached to the current section being
11157 if (stub_sec
!= osi
->sec
)
11160 addr
= (bfd_vma
)stub_entry
->stub_offset
;
11162 switch(stub_entry
->stub_type
) {
11163 case arm_stub_long_branch
:
11164 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11166 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
11169 case arm_thumb_v4t_stub_long_branch
:
11170 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11172 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
11175 case arm_thumb_thumb_stub_long_branch
:
11176 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
))
11178 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
11181 case arm_thumb_arm_v4t_stub_long_branch
:
11182 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
))
11184 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 8))
11186 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 16))
11189 case arm_stub_pic_long_branch
:
11190 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11192 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
11202 /* Output mapping symbols for linker generated sections. */
11205 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
11206 struct bfd_link_info
*info
,
11208 bfd_boolean (*func
) (void *, const char *,
11209 Elf_Internal_Sym
*,
11211 struct elf_link_hash_entry
*))
11213 output_arch_syminfo osi
;
11214 struct elf32_arm_link_hash_table
*htab
;
11216 bfd_size_type size
;
11218 htab
= elf32_arm_hash_table (info
);
11219 check_use_blx (htab
);
11225 /* ARM->Thumb glue. */
11226 if (htab
->arm_glue_size
> 0)
11228 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
11229 ARM2THUMB_GLUE_SECTION_NAME
);
11231 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11232 (output_bfd
, osi
.sec
->output_section
);
11233 if (info
->shared
|| htab
->root
.is_relocatable_executable
11234 || htab
->pic_veneer
)
11235 size
= ARM2THUMB_PIC_GLUE_SIZE
;
11236 else if (htab
->use_blx
)
11237 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
11239 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
11241 for (offset
= 0; offset
< htab
->arm_glue_size
; offset
+= size
)
11243 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, offset
);
11244 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, offset
+ size
- 4);
11248 /* Thumb->ARM glue. */
11249 if (htab
->thumb_glue_size
> 0)
11251 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
11252 THUMB2ARM_GLUE_SECTION_NAME
);
11254 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11255 (output_bfd
, osi
.sec
->output_section
);
11256 size
= THUMB2ARM_GLUE_SIZE
;
11258 for (offset
= 0; offset
< htab
->thumb_glue_size
; offset
+= size
)
11260 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_THUMB
, offset
);
11261 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, offset
+ 4);
11265 /* ARMv4 BX veneers. */
11266 if (htab
->bx_glue_size
> 0)
11268 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
11269 ARM_BX_GLUE_SECTION_NAME
);
11271 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11272 (output_bfd
, osi
.sec
->output_section
);
11274 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0);
11277 /* Long calls stubs. */
11278 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
) {
11279 asection
* stub_sec
;
11280 for (stub_sec
= htab
->stub_bfd
->sections
;
11282 stub_sec
= stub_sec
->next
) {
11284 /* Ignore non-stub sections */
11285 if (!strstr(stub_sec
->name
, STUB_SUFFIX
))
11288 osi
.sec
= stub_sec
;
11290 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11291 (output_bfd
, osi
.sec
->output_section
);
11293 bfd_hash_traverse (&htab
->stub_hash_table
, arm_map_one_stub
, &osi
);
11297 /* Finally, output mapping symbols for the PLT. */
11298 if (!htab
->splt
|| htab
->splt
->size
== 0)
11301 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
11302 htab
->splt
->output_section
);
11303 osi
.sec
= htab
->splt
;
11304 /* Output mapping symbols for the plt header. SymbianOS does not have a
11306 if (htab
->vxworks_p
)
11308 /* VxWorks shared libraries have no PLT header. */
11311 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
11313 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 12))
11317 else if (!htab
->symbian_p
)
11319 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
11321 #ifndef FOUR_WORD_PLT
11322 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 16))
11327 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
11331 /* Allocate target specific section data. */
11334 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
11336 if (!sec
->used_by_bfd
)
11338 _arm_elf_section_data
*sdata
;
11339 bfd_size_type amt
= sizeof (*sdata
);
11341 sdata
= bfd_zalloc (abfd
, amt
);
11344 sec
->used_by_bfd
= sdata
;
11347 record_section_with_arm_elf_section_data (sec
);
11349 return _bfd_elf_new_section_hook (abfd
, sec
);
11353 /* Used to order a list of mapping symbols by address. */
11356 elf32_arm_compare_mapping (const void * a
, const void * b
)
11358 const elf32_arm_section_map
*amap
= (const elf32_arm_section_map
*) a
;
11359 const elf32_arm_section_map
*bmap
= (const elf32_arm_section_map
*) b
;
11361 if (amap
->vma
> bmap
->vma
)
11363 else if (amap
->vma
< bmap
->vma
)
11365 else if (amap
->type
> bmap
->type
)
11366 /* Ensure results do not depend on the host qsort for objects with
11367 multiple mapping symbols at the same address by sorting on type
11370 else if (amap
->type
< bmap
->type
)
11377 /* Do code byteswapping. Return FALSE afterwards so that the section is
11378 written out as normal. */
11381 elf32_arm_write_section (bfd
*output_bfd
,
11382 struct bfd_link_info
*link_info
, asection
*sec
,
11383 bfd_byte
*contents
)
11385 int mapcount
, errcount
;
11386 _arm_elf_section_data
*arm_data
;
11387 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
11388 elf32_arm_section_map
*map
;
11389 elf32_vfp11_erratum_list
*errnode
;
11392 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
11396 /* If this section has not been allocated an _arm_elf_section_data
11397 structure then we cannot record anything. */
11398 arm_data
= get_arm_elf_section_data (sec
);
11399 if (arm_data
== NULL
)
11402 mapcount
= arm_data
->mapcount
;
11403 map
= arm_data
->map
;
11404 errcount
= arm_data
->erratumcount
;
11408 unsigned int endianflip
= bfd_big_endian (output_bfd
) ? 3 : 0;
11410 for (errnode
= arm_data
->erratumlist
; errnode
!= 0;
11411 errnode
= errnode
->next
)
11413 bfd_vma index
= errnode
->vma
- offset
;
11415 switch (errnode
->type
)
11417 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
11419 bfd_vma branch_to_veneer
;
11420 /* Original condition code of instruction, plus bit mask for
11421 ARM B instruction. */
11422 unsigned int insn
= (errnode
->u
.b
.vfp_insn
& 0xf0000000)
11425 /* The instruction is before the label. */
11428 /* Above offset included in -4 below. */
11429 branch_to_veneer
= errnode
->u
.b
.veneer
->vma
11430 - errnode
->vma
- 4;
11432 if ((signed) branch_to_veneer
< -(1 << 25)
11433 || (signed) branch_to_veneer
>= (1 << 25))
11434 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
11435 "range"), output_bfd
);
11437 insn
|= (branch_to_veneer
>> 2) & 0xffffff;
11438 contents
[endianflip
^ index
] = insn
& 0xff;
11439 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
11440 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
11441 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
11445 case VFP11_ERRATUM_ARM_VENEER
:
11447 bfd_vma branch_from_veneer
;
11450 /* Take size of veneer into account. */
11451 branch_from_veneer
= errnode
->u
.v
.branch
->vma
11452 - errnode
->vma
- 12;
11454 if ((signed) branch_from_veneer
< -(1 << 25)
11455 || (signed) branch_from_veneer
>= (1 << 25))
11456 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
11457 "range"), output_bfd
);
11459 /* Original instruction. */
11460 insn
= errnode
->u
.v
.branch
->u
.b
.vfp_insn
;
11461 contents
[endianflip
^ index
] = insn
& 0xff;
11462 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
11463 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
11464 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
11466 /* Branch back to insn after original insn. */
11467 insn
= 0xea000000 | ((branch_from_veneer
>> 2) & 0xffffff);
11468 contents
[endianflip
^ (index
+ 4)] = insn
& 0xff;
11469 contents
[endianflip
^ (index
+ 5)] = (insn
>> 8) & 0xff;
11470 contents
[endianflip
^ (index
+ 6)] = (insn
>> 16) & 0xff;
11471 contents
[endianflip
^ (index
+ 7)] = (insn
>> 24) & 0xff;
11484 if (globals
->byteswap_code
)
11486 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
11489 for (i
= 0; i
< mapcount
; i
++)
11491 if (i
== mapcount
- 1)
11494 end
= map
[i
+ 1].vma
;
11496 switch (map
[i
].type
)
11499 /* Byte swap code words. */
11500 while (ptr
+ 3 < end
)
11502 tmp
= contents
[ptr
];
11503 contents
[ptr
] = contents
[ptr
+ 3];
11504 contents
[ptr
+ 3] = tmp
;
11505 tmp
= contents
[ptr
+ 1];
11506 contents
[ptr
+ 1] = contents
[ptr
+ 2];
11507 contents
[ptr
+ 2] = tmp
;
11513 /* Byte swap code halfwords. */
11514 while (ptr
+ 1 < end
)
11516 tmp
= contents
[ptr
];
11517 contents
[ptr
] = contents
[ptr
+ 1];
11518 contents
[ptr
+ 1] = tmp
;
11524 /* Leave data alone. */
11532 arm_data
->mapcount
= 0;
11533 arm_data
->mapsize
= 0;
11534 arm_data
->map
= NULL
;
11535 unrecord_section_with_arm_elf_section_data (sec
);
11541 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
11543 void * ignore ATTRIBUTE_UNUSED
)
11545 unrecord_section_with_arm_elf_section_data (sec
);
11549 elf32_arm_close_and_cleanup (bfd
* abfd
)
11551 if (abfd
->sections
)
11552 bfd_map_over_sections (abfd
,
11553 unrecord_section_via_map_over_sections
,
11556 return _bfd_elf_close_and_cleanup (abfd
);
11560 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
11562 if (abfd
->sections
)
11563 bfd_map_over_sections (abfd
,
11564 unrecord_section_via_map_over_sections
,
11567 return _bfd_free_cached_info (abfd
);
11570 /* Display STT_ARM_TFUNC symbols as functions. */
11573 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
11576 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
11578 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
11579 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
11583 /* Mangle thumb function symbols as we read them in. */
11586 elf32_arm_swap_symbol_in (bfd
* abfd
,
11589 Elf_Internal_Sym
*dst
)
11591 if (!bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
11594 /* New EABI objects mark thumb function symbols by setting the low bit of
11595 the address. Turn these into STT_ARM_TFUNC. */
11596 if (ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
11597 && (dst
->st_value
& 1))
11599 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
11600 dst
->st_value
&= ~(bfd_vma
) 1;
11606 /* Mangle thumb function symbols as we write them out. */
11609 elf32_arm_swap_symbol_out (bfd
*abfd
,
11610 const Elf_Internal_Sym
*src
,
11614 Elf_Internal_Sym newsym
;
11616 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
11617 of the address set, as per the new EABI. We do this unconditionally
11618 because objcopy does not set the elf header flags until after
11619 it writes out the symbol table. */
11620 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
11623 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
11624 if (newsym
.st_shndx
!= SHN_UNDEF
)
11626 /* Do this only for defined symbols. At link type, the static
11627 linker will simulate the work of dynamic linker of resolving
11628 symbols and will carry over the thumbness of found symbols to
11629 the output symbol table. It's not clear how it happens, but
11630 the thumbness of undefined symbols can well be different at
11631 runtime, and writing '1' for them will be confusing for users
11632 and possibly for dynamic linker itself.
11634 newsym
.st_value
|= 1;
11639 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
11642 /* Add the PT_ARM_EXIDX program header. */
11645 elf32_arm_modify_segment_map (bfd
*abfd
,
11646 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
11648 struct elf_segment_map
*m
;
11651 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
11652 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
11654 /* If there is already a PT_ARM_EXIDX header, then we do not
11655 want to add another one. This situation arises when running
11656 "strip"; the input binary already has the header. */
11657 m
= elf_tdata (abfd
)->segment_map
;
11658 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
11662 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
11665 m
->p_type
= PT_ARM_EXIDX
;
11667 m
->sections
[0] = sec
;
11669 m
->next
= elf_tdata (abfd
)->segment_map
;
11670 elf_tdata (abfd
)->segment_map
= m
;
11677 /* We may add a PT_ARM_EXIDX program header. */
11680 elf32_arm_additional_program_headers (bfd
*abfd
,
11681 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
11685 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
11686 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
11692 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
11695 elf32_arm_is_function_type (unsigned int type
)
11697 return (type
== STT_FUNC
) || (type
== STT_ARM_TFUNC
);
11700 /* We use this to override swap_symbol_in and swap_symbol_out. */
11701 const struct elf_size_info elf32_arm_size_info
=
11703 sizeof (Elf32_External_Ehdr
),
11704 sizeof (Elf32_External_Phdr
),
11705 sizeof (Elf32_External_Shdr
),
11706 sizeof (Elf32_External_Rel
),
11707 sizeof (Elf32_External_Rela
),
11708 sizeof (Elf32_External_Sym
),
11709 sizeof (Elf32_External_Dyn
),
11710 sizeof (Elf_External_Note
),
11714 ELFCLASS32
, EV_CURRENT
,
11715 bfd_elf32_write_out_phdrs
,
11716 bfd_elf32_write_shdrs_and_ehdr
,
11717 bfd_elf32_checksum_contents
,
11718 bfd_elf32_write_relocs
,
11719 elf32_arm_swap_symbol_in
,
11720 elf32_arm_swap_symbol_out
,
11721 bfd_elf32_slurp_reloc_table
,
11722 bfd_elf32_slurp_symbol_table
,
11723 bfd_elf32_swap_dyn_in
,
11724 bfd_elf32_swap_dyn_out
,
11725 bfd_elf32_swap_reloc_in
,
11726 bfd_elf32_swap_reloc_out
,
11727 bfd_elf32_swap_reloca_in
,
11728 bfd_elf32_swap_reloca_out
11731 #define ELF_ARCH bfd_arch_arm
11732 #define ELF_MACHINE_CODE EM_ARM
11733 #ifdef __QNXTARGET__
11734 #define ELF_MAXPAGESIZE 0x1000
11736 #define ELF_MAXPAGESIZE 0x8000
11738 #define ELF_MINPAGESIZE 0x1000
11739 #define ELF_COMMONPAGESIZE 0x1000
11741 #define bfd_elf32_mkobject elf32_arm_mkobject
11743 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
11744 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
11745 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
11746 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
11747 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
11748 #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
11749 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
11750 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
11751 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
11752 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
11753 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
11754 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
11755 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
11756 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
11758 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
11759 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
11760 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
11761 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
11762 #define elf_backend_check_relocs elf32_arm_check_relocs
11763 #define elf_backend_relocate_section elf32_arm_relocate_section
11764 #define elf_backend_write_section elf32_arm_write_section
11765 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
11766 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
11767 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
11768 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
11769 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
11770 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
11771 #define elf_backend_post_process_headers elf32_arm_post_process_headers
11772 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
11773 #define elf_backend_object_p elf32_arm_object_p
11774 #define elf_backend_section_flags elf32_arm_section_flags
11775 #define elf_backend_fake_sections elf32_arm_fake_sections
11776 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
11777 #define elf_backend_final_write_processing elf32_arm_final_write_processing
11778 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
11779 #define elf_backend_symbol_processing elf32_arm_symbol_processing
11780 #define elf_backend_size_info elf32_arm_size_info
11781 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
11782 #define elf_backend_additional_program_headers elf32_arm_additional_program_headers
11783 #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
11784 #define elf_backend_begin_write_processing elf32_arm_begin_write_processing
11785 #define elf_backend_is_function_type elf32_arm_is_function_type
11787 #define elf_backend_can_refcount 1
11788 #define elf_backend_can_gc_sections 1
11789 #define elf_backend_plt_readonly 1
11790 #define elf_backend_want_got_plt 1
11791 #define elf_backend_want_plt_sym 0
11792 #define elf_backend_may_use_rel_p 1
11793 #define elf_backend_may_use_rela_p 0
11794 #define elf_backend_default_use_rela_p 0
11796 #define elf_backend_got_header_size 12
11798 #undef elf_backend_obj_attrs_vendor
11799 #define elf_backend_obj_attrs_vendor "aeabi"
11800 #undef elf_backend_obj_attrs_section
11801 #define elf_backend_obj_attrs_section ".ARM.attributes"
11802 #undef elf_backend_obj_attrs_arg_type
11803 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
11804 #undef elf_backend_obj_attrs_section_type
11805 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
11807 #include "elf32-target.h"
11809 /* VxWorks Targets. */
11811 #undef TARGET_LITTLE_SYM
11812 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
11813 #undef TARGET_LITTLE_NAME
11814 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
11815 #undef TARGET_BIG_SYM
11816 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
11817 #undef TARGET_BIG_NAME
11818 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
11820 /* Like elf32_arm_link_hash_table_create -- but overrides
11821 appropriately for VxWorks. */
11823 static struct bfd_link_hash_table
*
11824 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
11826 struct bfd_link_hash_table
*ret
;
11828 ret
= elf32_arm_link_hash_table_create (abfd
);
11831 struct elf32_arm_link_hash_table
*htab
11832 = (struct elf32_arm_link_hash_table
*) ret
;
11834 htab
->vxworks_p
= 1;
11840 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
11842 elf32_arm_final_write_processing (abfd
, linker
);
11843 elf_vxworks_final_write_processing (abfd
, linker
);
11847 #define elf32_bed elf32_arm_vxworks_bed
11849 #undef bfd_elf32_bfd_link_hash_table_create
11850 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
11851 #undef elf_backend_add_symbol_hook
11852 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
11853 #undef elf_backend_final_write_processing
11854 #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
11855 #undef elf_backend_emit_relocs
11856 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
11858 #undef elf_backend_may_use_rel_p
11859 #define elf_backend_may_use_rel_p 0
11860 #undef elf_backend_may_use_rela_p
11861 #define elf_backend_may_use_rela_p 1
11862 #undef elf_backend_default_use_rela_p
11863 #define elf_backend_default_use_rela_p 1
11864 #undef elf_backend_want_plt_sym
11865 #define elf_backend_want_plt_sym 1
11866 #undef ELF_MAXPAGESIZE
11867 #define ELF_MAXPAGESIZE 0x1000
11869 #include "elf32-target.h"
11872 /* Symbian OS Targets. */
11874 #undef TARGET_LITTLE_SYM
11875 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
11876 #undef TARGET_LITTLE_NAME
11877 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
11878 #undef TARGET_BIG_SYM
11879 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
11880 #undef TARGET_BIG_NAME
11881 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
11883 /* Like elf32_arm_link_hash_table_create -- but overrides
11884 appropriately for Symbian OS. */
11886 static struct bfd_link_hash_table
*
11887 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
11889 struct bfd_link_hash_table
*ret
;
11891 ret
= elf32_arm_link_hash_table_create (abfd
);
11894 struct elf32_arm_link_hash_table
*htab
11895 = (struct elf32_arm_link_hash_table
*)ret
;
11896 /* There is no PLT header for Symbian OS. */
11897 htab
->plt_header_size
= 0;
11898 /* The PLT entries are each one instruction and one word. */
11899 htab
->plt_entry_size
= 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry
);
11900 htab
->symbian_p
= 1;
11901 /* Symbian uses armv5t or above, so use_blx is always true. */
11903 htab
->root
.is_relocatable_executable
= 1;
11908 static const struct bfd_elf_special_section
11909 elf32_arm_symbian_special_sections
[] =
11911 /* In a BPABI executable, the dynamic linking sections do not go in
11912 the loadable read-only segment. The post-linker may wish to
11913 refer to these sections, but they are not part of the final
11915 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC
, 0 },
11916 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB
, 0 },
11917 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM
, 0 },
11918 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS
, 0 },
11919 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH
, 0 },
11920 /* These sections do not need to be writable as the SymbianOS
11921 postlinker will arrange things so that no dynamic relocation is
11923 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
11924 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
11925 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
11926 { NULL
, 0, 0, 0, 0 }
11930 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
11931 struct bfd_link_info
*link_info
)
11933 /* BPABI objects are never loaded directly by an OS kernel; they are
11934 processed by a postlinker first, into an OS-specific format. If
11935 the D_PAGED bit is set on the file, BFD will align segments on
11936 page boundaries, so that an OS can directly map the file. With
11937 BPABI objects, that just results in wasted space. In addition,
11938 because we clear the D_PAGED bit, map_sections_to_segments will
11939 recognize that the program headers should not be mapped into any
11940 loadable segment. */
11941 abfd
->flags
&= ~D_PAGED
;
11942 elf32_arm_begin_write_processing (abfd
, link_info
);
11946 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
11947 struct bfd_link_info
*info
)
11949 struct elf_segment_map
*m
;
11952 /* BPABI shared libraries and executables should have a PT_DYNAMIC
11953 segment. However, because the .dynamic section is not marked
11954 with SEC_LOAD, the generic ELF code will not create such a
11956 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
11959 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
11960 if (m
->p_type
== PT_DYNAMIC
)
11965 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
11966 m
->next
= elf_tdata (abfd
)->segment_map
;
11967 elf_tdata (abfd
)->segment_map
= m
;
11971 /* Also call the generic arm routine. */
11972 return elf32_arm_modify_segment_map (abfd
, info
);
11975 /* Return address for Ith PLT stub in section PLT, for relocation REL
11976 or (bfd_vma) -1 if it should not be included. */
11979 elf32_arm_symbian_plt_sym_val (bfd_vma i
, const asection
*plt
,
11980 const arelent
*rel ATTRIBUTE_UNUSED
)
11982 return plt
->vma
+ 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry
) * i
;
11987 #define elf32_bed elf32_arm_symbian_bed
11989 /* The dynamic sections are not allocated on SymbianOS; the postlinker
11990 will process them and then discard them. */
11991 #undef ELF_DYNAMIC_SEC_FLAGS
11992 #define ELF_DYNAMIC_SEC_FLAGS \
11993 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
11995 #undef elf_backend_add_symbol_hook
11996 #undef elf_backend_emit_relocs
11998 #undef bfd_elf32_bfd_link_hash_table_create
11999 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
12000 #undef elf_backend_special_sections
12001 #define elf_backend_special_sections elf32_arm_symbian_special_sections
12002 #undef elf_backend_begin_write_processing
12003 #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
12004 #undef elf_backend_final_write_processing
12005 #define elf_backend_final_write_processing elf32_arm_final_write_processing
12007 #undef elf_backend_modify_segment_map
12008 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
12010 /* There is no .got section for BPABI objects, and hence no header. */
12011 #undef elf_backend_got_header_size
12012 #define elf_backend_got_header_size 0
12014 /* Similarly, there is no .got.plt section. */
12015 #undef elf_backend_want_got_plt
12016 #define elf_backend_want_got_plt 0
12018 #undef elf_backend_plt_sym_val
12019 #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
12021 #undef elf_backend_may_use_rel_p
12022 #define elf_backend_may_use_rel_p 1
12023 #undef elf_backend_may_use_rela_p
12024 #define elf_backend_may_use_rela_p 0
12025 #undef elf_backend_default_use_rela_p
12026 #define elf_backend_default_use_rela_p 0
12027 #undef elf_backend_want_plt_sym
12028 #define elf_backend_want_plt_sym 0
12029 #undef ELF_MAXPAGESIZE
12030 #define ELF_MAXPAGESIZE 0x8000
12032 #include "elf32-target.h"