1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
23 #include "libiberty.h"
26 #include "elf-vxworks.h"
30 #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
33 /* Return the relocation section associated with NAME. HTAB is the
34 bfd's elf32_arm_link_hash_entry. */
35 #define RELOC_SECTION(HTAB, NAME) \
36 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
38 /* Return size of a relocation entry. HTAB is the bfd's
39 elf32_arm_link_hash_entry. */
40 #define RELOC_SIZE(HTAB) \
42 ? sizeof (Elf32_External_Rel) \
43 : sizeof (Elf32_External_Rela))
45 /* Return function to swap relocations in. HTAB is the bfd's
46 elf32_arm_link_hash_entry. */
47 #define SWAP_RELOC_IN(HTAB) \
49 ? bfd_elf32_swap_reloc_in \
50 : bfd_elf32_swap_reloca_in)
52 /* Return function to swap relocations out. HTAB is the bfd's
53 elf32_arm_link_hash_entry. */
54 #define SWAP_RELOC_OUT(HTAB) \
56 ? bfd_elf32_swap_reloc_out \
57 : bfd_elf32_swap_reloca_out)
59 #define elf_info_to_howto 0
60 #define elf_info_to_howto_rel elf32_arm_info_to_howto
62 #define ARM_ELF_ABI_VERSION 0
63 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
65 static struct elf_backend_data elf32_arm_vxworks_bed
;
67 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
68 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
71 static reloc_howto_type elf32_arm_howto_table_1
[] =
74 HOWTO (R_ARM_NONE
, /* type */
76 0, /* size (0 = byte, 1 = short, 2 = long) */
78 FALSE
, /* pc_relative */
80 complain_overflow_dont
,/* complain_on_overflow */
81 bfd_elf_generic_reloc
, /* special_function */
82 "R_ARM_NONE", /* name */
83 FALSE
, /* partial_inplace */
86 FALSE
), /* pcrel_offset */
88 HOWTO (R_ARM_PC24
, /* type */
90 2, /* size (0 = byte, 1 = short, 2 = long) */
92 TRUE
, /* pc_relative */
94 complain_overflow_signed
,/* complain_on_overflow */
95 bfd_elf_generic_reloc
, /* special_function */
96 "R_ARM_PC24", /* name */
97 FALSE
, /* partial_inplace */
98 0x00ffffff, /* src_mask */
99 0x00ffffff, /* dst_mask */
100 TRUE
), /* pcrel_offset */
102 /* 32 bit absolute */
103 HOWTO (R_ARM_ABS32
, /* type */
105 2, /* size (0 = byte, 1 = short, 2 = long) */
107 FALSE
, /* pc_relative */
109 complain_overflow_bitfield
,/* complain_on_overflow */
110 bfd_elf_generic_reloc
, /* special_function */
111 "R_ARM_ABS32", /* name */
112 FALSE
, /* partial_inplace */
113 0xffffffff, /* src_mask */
114 0xffffffff, /* dst_mask */
115 FALSE
), /* pcrel_offset */
117 /* standard 32bit pc-relative reloc */
118 HOWTO (R_ARM_REL32
, /* type */
120 2, /* size (0 = byte, 1 = short, 2 = long) */
122 TRUE
, /* pc_relative */
124 complain_overflow_bitfield
,/* complain_on_overflow */
125 bfd_elf_generic_reloc
, /* special_function */
126 "R_ARM_REL32", /* name */
127 FALSE
, /* partial_inplace */
128 0xffffffff, /* src_mask */
129 0xffffffff, /* dst_mask */
130 TRUE
), /* pcrel_offset */
132 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
133 HOWTO (R_ARM_LDR_PC_G0
, /* type */
135 0, /* size (0 = byte, 1 = short, 2 = long) */
137 TRUE
, /* pc_relative */
139 complain_overflow_dont
,/* complain_on_overflow */
140 bfd_elf_generic_reloc
, /* special_function */
141 "R_ARM_LDR_PC_G0", /* name */
142 FALSE
, /* partial_inplace */
143 0xffffffff, /* src_mask */
144 0xffffffff, /* dst_mask */
145 TRUE
), /* pcrel_offset */
147 /* 16 bit absolute */
148 HOWTO (R_ARM_ABS16
, /* type */
150 1, /* size (0 = byte, 1 = short, 2 = long) */
152 FALSE
, /* pc_relative */
154 complain_overflow_bitfield
,/* complain_on_overflow */
155 bfd_elf_generic_reloc
, /* special_function */
156 "R_ARM_ABS16", /* name */
157 FALSE
, /* partial_inplace */
158 0x0000ffff, /* src_mask */
159 0x0000ffff, /* dst_mask */
160 FALSE
), /* pcrel_offset */
162 /* 12 bit absolute */
163 HOWTO (R_ARM_ABS12
, /* type */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
167 FALSE
, /* pc_relative */
169 complain_overflow_bitfield
,/* complain_on_overflow */
170 bfd_elf_generic_reloc
, /* special_function */
171 "R_ARM_ABS12", /* name */
172 FALSE
, /* partial_inplace */
173 0x00000fff, /* src_mask */
174 0x00000fff, /* dst_mask */
175 FALSE
), /* pcrel_offset */
177 HOWTO (R_ARM_THM_ABS5
, /* type */
179 1, /* size (0 = byte, 1 = short, 2 = long) */
181 FALSE
, /* pc_relative */
183 complain_overflow_bitfield
,/* complain_on_overflow */
184 bfd_elf_generic_reloc
, /* special_function */
185 "R_ARM_THM_ABS5", /* name */
186 FALSE
, /* partial_inplace */
187 0x000007e0, /* src_mask */
188 0x000007e0, /* dst_mask */
189 FALSE
), /* pcrel_offset */
192 HOWTO (R_ARM_ABS8
, /* type */
194 0, /* size (0 = byte, 1 = short, 2 = long) */
196 FALSE
, /* pc_relative */
198 complain_overflow_bitfield
,/* complain_on_overflow */
199 bfd_elf_generic_reloc
, /* special_function */
200 "R_ARM_ABS8", /* name */
201 FALSE
, /* partial_inplace */
202 0x000000ff, /* src_mask */
203 0x000000ff, /* dst_mask */
204 FALSE
), /* pcrel_offset */
206 HOWTO (R_ARM_SBREL32
, /* type */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
210 FALSE
, /* pc_relative */
212 complain_overflow_dont
,/* complain_on_overflow */
213 bfd_elf_generic_reloc
, /* special_function */
214 "R_ARM_SBREL32", /* name */
215 FALSE
, /* partial_inplace */
216 0xffffffff, /* src_mask */
217 0xffffffff, /* dst_mask */
218 FALSE
), /* pcrel_offset */
220 HOWTO (R_ARM_THM_CALL
, /* type */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
224 TRUE
, /* pc_relative */
226 complain_overflow_signed
,/* complain_on_overflow */
227 bfd_elf_generic_reloc
, /* special_function */
228 "R_ARM_THM_CALL", /* name */
229 FALSE
, /* partial_inplace */
230 0x07ff07ff, /* src_mask */
231 0x07ff07ff, /* dst_mask */
232 TRUE
), /* pcrel_offset */
234 HOWTO (R_ARM_THM_PC8
, /* type */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
238 TRUE
, /* pc_relative */
240 complain_overflow_signed
,/* complain_on_overflow */
241 bfd_elf_generic_reloc
, /* special_function */
242 "R_ARM_THM_PC8", /* name */
243 FALSE
, /* partial_inplace */
244 0x000000ff, /* src_mask */
245 0x000000ff, /* dst_mask */
246 TRUE
), /* pcrel_offset */
248 HOWTO (R_ARM_BREL_ADJ
, /* type */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
252 FALSE
, /* pc_relative */
254 complain_overflow_signed
,/* complain_on_overflow */
255 bfd_elf_generic_reloc
, /* special_function */
256 "R_ARM_BREL_ADJ", /* name */
257 FALSE
, /* partial_inplace */
258 0xffffffff, /* src_mask */
259 0xffffffff, /* dst_mask */
260 FALSE
), /* pcrel_offset */
262 HOWTO (R_ARM_SWI24
, /* type */
264 0, /* size (0 = byte, 1 = short, 2 = long) */
266 FALSE
, /* pc_relative */
268 complain_overflow_signed
,/* complain_on_overflow */
269 bfd_elf_generic_reloc
, /* special_function */
270 "R_ARM_SWI24", /* name */
271 FALSE
, /* partial_inplace */
272 0x00000000, /* src_mask */
273 0x00000000, /* dst_mask */
274 FALSE
), /* pcrel_offset */
276 HOWTO (R_ARM_THM_SWI8
, /* type */
278 0, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE
, /* pc_relative */
282 complain_overflow_signed
,/* complain_on_overflow */
283 bfd_elf_generic_reloc
, /* special_function */
284 "R_ARM_SWI8", /* name */
285 FALSE
, /* partial_inplace */
286 0x00000000, /* src_mask */
287 0x00000000, /* dst_mask */
288 FALSE
), /* pcrel_offset */
290 /* BLX instruction for the ARM. */
291 HOWTO (R_ARM_XPC25
, /* type */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
295 TRUE
, /* pc_relative */
297 complain_overflow_signed
,/* complain_on_overflow */
298 bfd_elf_generic_reloc
, /* special_function */
299 "R_ARM_XPC25", /* name */
300 FALSE
, /* partial_inplace */
301 0x00ffffff, /* src_mask */
302 0x00ffffff, /* dst_mask */
303 TRUE
), /* pcrel_offset */
305 /* BLX instruction for the Thumb. */
306 HOWTO (R_ARM_THM_XPC22
, /* type */
308 2, /* size (0 = byte, 1 = short, 2 = long) */
310 TRUE
, /* pc_relative */
312 complain_overflow_signed
,/* complain_on_overflow */
313 bfd_elf_generic_reloc
, /* special_function */
314 "R_ARM_THM_XPC22", /* name */
315 FALSE
, /* partial_inplace */
316 0x07ff07ff, /* src_mask */
317 0x07ff07ff, /* dst_mask */
318 TRUE
), /* pcrel_offset */
320 /* Dynamic TLS relocations. */
322 HOWTO (R_ARM_TLS_DTPMOD32
, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE
, /* pc_relative */
328 complain_overflow_bitfield
,/* complain_on_overflow */
329 bfd_elf_generic_reloc
, /* special_function */
330 "R_ARM_TLS_DTPMOD32", /* name */
331 TRUE
, /* partial_inplace */
332 0xffffffff, /* src_mask */
333 0xffffffff, /* dst_mask */
334 FALSE
), /* pcrel_offset */
336 HOWTO (R_ARM_TLS_DTPOFF32
, /* type */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
340 FALSE
, /* pc_relative */
342 complain_overflow_bitfield
,/* complain_on_overflow */
343 bfd_elf_generic_reloc
, /* special_function */
344 "R_ARM_TLS_DTPOFF32", /* name */
345 TRUE
, /* partial_inplace */
346 0xffffffff, /* src_mask */
347 0xffffffff, /* dst_mask */
348 FALSE
), /* pcrel_offset */
350 HOWTO (R_ARM_TLS_TPOFF32
, /* type */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
354 FALSE
, /* pc_relative */
356 complain_overflow_bitfield
,/* complain_on_overflow */
357 bfd_elf_generic_reloc
, /* special_function */
358 "R_ARM_TLS_TPOFF32", /* name */
359 TRUE
, /* partial_inplace */
360 0xffffffff, /* src_mask */
361 0xffffffff, /* dst_mask */
362 FALSE
), /* pcrel_offset */
364 /* Relocs used in ARM Linux */
366 HOWTO (R_ARM_COPY
, /* type */
368 2, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE
, /* pc_relative */
372 complain_overflow_bitfield
,/* complain_on_overflow */
373 bfd_elf_generic_reloc
, /* special_function */
374 "R_ARM_COPY", /* name */
375 TRUE
, /* partial_inplace */
376 0xffffffff, /* src_mask */
377 0xffffffff, /* dst_mask */
378 FALSE
), /* pcrel_offset */
380 HOWTO (R_ARM_GLOB_DAT
, /* type */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
384 FALSE
, /* pc_relative */
386 complain_overflow_bitfield
,/* complain_on_overflow */
387 bfd_elf_generic_reloc
, /* special_function */
388 "R_ARM_GLOB_DAT", /* name */
389 TRUE
, /* partial_inplace */
390 0xffffffff, /* src_mask */
391 0xffffffff, /* dst_mask */
392 FALSE
), /* pcrel_offset */
394 HOWTO (R_ARM_JUMP_SLOT
, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 FALSE
, /* pc_relative */
400 complain_overflow_bitfield
,/* complain_on_overflow */
401 bfd_elf_generic_reloc
, /* special_function */
402 "R_ARM_JUMP_SLOT", /* name */
403 TRUE
, /* partial_inplace */
404 0xffffffff, /* src_mask */
405 0xffffffff, /* dst_mask */
406 FALSE
), /* pcrel_offset */
408 HOWTO (R_ARM_RELATIVE
, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 FALSE
, /* pc_relative */
414 complain_overflow_bitfield
,/* complain_on_overflow */
415 bfd_elf_generic_reloc
, /* special_function */
416 "R_ARM_RELATIVE", /* name */
417 TRUE
, /* partial_inplace */
418 0xffffffff, /* src_mask */
419 0xffffffff, /* dst_mask */
420 FALSE
), /* pcrel_offset */
422 HOWTO (R_ARM_GOTOFF32
, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE
, /* pc_relative */
428 complain_overflow_bitfield
,/* complain_on_overflow */
429 bfd_elf_generic_reloc
, /* special_function */
430 "R_ARM_GOTOFF32", /* name */
431 TRUE
, /* partial_inplace */
432 0xffffffff, /* src_mask */
433 0xffffffff, /* dst_mask */
434 FALSE
), /* pcrel_offset */
436 HOWTO (R_ARM_GOTPC
, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE
, /* pc_relative */
442 complain_overflow_bitfield
,/* complain_on_overflow */
443 bfd_elf_generic_reloc
, /* special_function */
444 "R_ARM_GOTPC", /* name */
445 TRUE
, /* partial_inplace */
446 0xffffffff, /* src_mask */
447 0xffffffff, /* dst_mask */
448 TRUE
), /* pcrel_offset */
450 HOWTO (R_ARM_GOT32
, /* type */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE
, /* pc_relative */
456 complain_overflow_bitfield
,/* complain_on_overflow */
457 bfd_elf_generic_reloc
, /* special_function */
458 "R_ARM_GOT32", /* name */
459 TRUE
, /* partial_inplace */
460 0xffffffff, /* src_mask */
461 0xffffffff, /* dst_mask */
462 FALSE
), /* pcrel_offset */
464 HOWTO (R_ARM_PLT32
, /* type */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
468 TRUE
, /* pc_relative */
470 complain_overflow_bitfield
,/* complain_on_overflow */
471 bfd_elf_generic_reloc
, /* special_function */
472 "R_ARM_PLT32", /* name */
473 FALSE
, /* partial_inplace */
474 0x00ffffff, /* src_mask */
475 0x00ffffff, /* dst_mask */
476 TRUE
), /* pcrel_offset */
478 HOWTO (R_ARM_CALL
, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 TRUE
, /* pc_relative */
484 complain_overflow_signed
,/* complain_on_overflow */
485 bfd_elf_generic_reloc
, /* special_function */
486 "R_ARM_CALL", /* name */
487 FALSE
, /* partial_inplace */
488 0x00ffffff, /* src_mask */
489 0x00ffffff, /* dst_mask */
490 TRUE
), /* pcrel_offset */
492 HOWTO (R_ARM_JUMP24
, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 TRUE
, /* pc_relative */
498 complain_overflow_signed
,/* complain_on_overflow */
499 bfd_elf_generic_reloc
, /* special_function */
500 "R_ARM_JUMP24", /* name */
501 FALSE
, /* partial_inplace */
502 0x00ffffff, /* src_mask */
503 0x00ffffff, /* dst_mask */
504 TRUE
), /* pcrel_offset */
506 HOWTO (R_ARM_THM_JUMP24
, /* type */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
510 TRUE
, /* pc_relative */
512 complain_overflow_signed
,/* complain_on_overflow */
513 bfd_elf_generic_reloc
, /* special_function */
514 "R_ARM_THM_JUMP24", /* name */
515 FALSE
, /* partial_inplace */
516 0x07ff2fff, /* src_mask */
517 0x07ff2fff, /* dst_mask */
518 TRUE
), /* pcrel_offset */
520 HOWTO (R_ARM_BASE_ABS
, /* type */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
524 FALSE
, /* pc_relative */
526 complain_overflow_dont
,/* complain_on_overflow */
527 bfd_elf_generic_reloc
, /* special_function */
528 "R_ARM_BASE_ABS", /* name */
529 FALSE
, /* partial_inplace */
530 0xffffffff, /* src_mask */
531 0xffffffff, /* dst_mask */
532 FALSE
), /* pcrel_offset */
534 HOWTO (R_ARM_ALU_PCREL7_0
, /* type */
536 2, /* size (0 = byte, 1 = short, 2 = long) */
538 TRUE
, /* pc_relative */
540 complain_overflow_dont
,/* complain_on_overflow */
541 bfd_elf_generic_reloc
, /* special_function */
542 "R_ARM_ALU_PCREL_7_0", /* name */
543 FALSE
, /* partial_inplace */
544 0x00000fff, /* src_mask */
545 0x00000fff, /* dst_mask */
546 TRUE
), /* pcrel_offset */
548 HOWTO (R_ARM_ALU_PCREL15_8
, /* type */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
552 TRUE
, /* pc_relative */
554 complain_overflow_dont
,/* complain_on_overflow */
555 bfd_elf_generic_reloc
, /* special_function */
556 "R_ARM_ALU_PCREL_15_8",/* name */
557 FALSE
, /* partial_inplace */
558 0x00000fff, /* src_mask */
559 0x00000fff, /* dst_mask */
560 TRUE
), /* pcrel_offset */
562 HOWTO (R_ARM_ALU_PCREL23_15
, /* type */
564 2, /* size (0 = byte, 1 = short, 2 = long) */
566 TRUE
, /* pc_relative */
568 complain_overflow_dont
,/* complain_on_overflow */
569 bfd_elf_generic_reloc
, /* special_function */
570 "R_ARM_ALU_PCREL_23_15",/* name */
571 FALSE
, /* partial_inplace */
572 0x00000fff, /* src_mask */
573 0x00000fff, /* dst_mask */
574 TRUE
), /* pcrel_offset */
576 HOWTO (R_ARM_LDR_SBREL_11_0
, /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 FALSE
, /* pc_relative */
582 complain_overflow_dont
,/* complain_on_overflow */
583 bfd_elf_generic_reloc
, /* special_function */
584 "R_ARM_LDR_SBREL_11_0",/* name */
585 FALSE
, /* partial_inplace */
586 0x00000fff, /* src_mask */
587 0x00000fff, /* dst_mask */
588 FALSE
), /* pcrel_offset */
590 HOWTO (R_ARM_ALU_SBREL_19_12
, /* type */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE
, /* pc_relative */
596 complain_overflow_dont
,/* complain_on_overflow */
597 bfd_elf_generic_reloc
, /* special_function */
598 "R_ARM_ALU_SBREL_19_12",/* name */
599 FALSE
, /* partial_inplace */
600 0x000ff000, /* src_mask */
601 0x000ff000, /* dst_mask */
602 FALSE
), /* pcrel_offset */
604 HOWTO (R_ARM_ALU_SBREL_27_20
, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 FALSE
, /* pc_relative */
610 complain_overflow_dont
,/* complain_on_overflow */
611 bfd_elf_generic_reloc
, /* special_function */
612 "R_ARM_ALU_SBREL_27_20",/* name */
613 FALSE
, /* partial_inplace */
614 0x0ff00000, /* src_mask */
615 0x0ff00000, /* dst_mask */
616 FALSE
), /* pcrel_offset */
618 HOWTO (R_ARM_TARGET1
, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE
, /* pc_relative */
624 complain_overflow_dont
,/* complain_on_overflow */
625 bfd_elf_generic_reloc
, /* special_function */
626 "R_ARM_TARGET1", /* name */
627 FALSE
, /* partial_inplace */
628 0xffffffff, /* src_mask */
629 0xffffffff, /* dst_mask */
630 FALSE
), /* pcrel_offset */
632 HOWTO (R_ARM_ROSEGREL32
, /* type */
634 2, /* size (0 = byte, 1 = short, 2 = long) */
636 FALSE
, /* pc_relative */
638 complain_overflow_dont
,/* complain_on_overflow */
639 bfd_elf_generic_reloc
, /* special_function */
640 "R_ARM_ROSEGREL32", /* name */
641 FALSE
, /* partial_inplace */
642 0xffffffff, /* src_mask */
643 0xffffffff, /* dst_mask */
644 FALSE
), /* pcrel_offset */
646 HOWTO (R_ARM_V4BX
, /* type */
648 2, /* size (0 = byte, 1 = short, 2 = long) */
650 FALSE
, /* pc_relative */
652 complain_overflow_dont
,/* complain_on_overflow */
653 bfd_elf_generic_reloc
, /* special_function */
654 "R_ARM_V4BX", /* name */
655 FALSE
, /* partial_inplace */
656 0xffffffff, /* src_mask */
657 0xffffffff, /* dst_mask */
658 FALSE
), /* pcrel_offset */
660 HOWTO (R_ARM_TARGET2
, /* type */
662 2, /* size (0 = byte, 1 = short, 2 = long) */
664 FALSE
, /* pc_relative */
666 complain_overflow_signed
,/* complain_on_overflow */
667 bfd_elf_generic_reloc
, /* special_function */
668 "R_ARM_TARGET2", /* name */
669 FALSE
, /* partial_inplace */
670 0xffffffff, /* src_mask */
671 0xffffffff, /* dst_mask */
672 TRUE
), /* pcrel_offset */
674 HOWTO (R_ARM_PREL31
, /* type */
676 2, /* size (0 = byte, 1 = short, 2 = long) */
678 TRUE
, /* pc_relative */
680 complain_overflow_signed
,/* complain_on_overflow */
681 bfd_elf_generic_reloc
, /* special_function */
682 "R_ARM_PREL31", /* name */
683 FALSE
, /* partial_inplace */
684 0x7fffffff, /* src_mask */
685 0x7fffffff, /* dst_mask */
686 TRUE
), /* pcrel_offset */
688 HOWTO (R_ARM_MOVW_ABS_NC
, /* type */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
692 FALSE
, /* pc_relative */
694 complain_overflow_dont
,/* complain_on_overflow */
695 bfd_elf_generic_reloc
, /* special_function */
696 "R_ARM_MOVW_ABS_NC", /* name */
697 FALSE
, /* partial_inplace */
698 0x0000ffff, /* src_mask */
699 0x0000ffff, /* dst_mask */
700 FALSE
), /* pcrel_offset */
702 HOWTO (R_ARM_MOVT_ABS
, /* type */
704 2, /* size (0 = byte, 1 = short, 2 = long) */
706 FALSE
, /* pc_relative */
708 complain_overflow_bitfield
,/* complain_on_overflow */
709 bfd_elf_generic_reloc
, /* special_function */
710 "R_ARM_MOVT_ABS", /* name */
711 FALSE
, /* partial_inplace */
712 0x0000ffff, /* src_mask */
713 0x0000ffff, /* dst_mask */
714 FALSE
), /* pcrel_offset */
716 HOWTO (R_ARM_MOVW_PREL_NC
, /* type */
718 2, /* size (0 = byte, 1 = short, 2 = long) */
720 TRUE
, /* pc_relative */
722 complain_overflow_dont
,/* complain_on_overflow */
723 bfd_elf_generic_reloc
, /* special_function */
724 "R_ARM_MOVW_PREL_NC", /* name */
725 FALSE
, /* partial_inplace */
726 0x0000ffff, /* src_mask */
727 0x0000ffff, /* dst_mask */
728 TRUE
), /* pcrel_offset */
730 HOWTO (R_ARM_MOVT_PREL
, /* type */
732 2, /* size (0 = byte, 1 = short, 2 = long) */
734 TRUE
, /* pc_relative */
736 complain_overflow_bitfield
,/* complain_on_overflow */
737 bfd_elf_generic_reloc
, /* special_function */
738 "R_ARM_MOVT_PREL", /* name */
739 FALSE
, /* partial_inplace */
740 0x0000ffff, /* src_mask */
741 0x0000ffff, /* dst_mask */
742 TRUE
), /* pcrel_offset */
744 HOWTO (R_ARM_THM_MOVW_ABS_NC
, /* type */
746 2, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE
, /* pc_relative */
750 complain_overflow_dont
,/* complain_on_overflow */
751 bfd_elf_generic_reloc
, /* special_function */
752 "R_ARM_THM_MOVW_ABS_NC",/* name */
753 FALSE
, /* partial_inplace */
754 0x040f70ff, /* src_mask */
755 0x040f70ff, /* dst_mask */
756 FALSE
), /* pcrel_offset */
758 HOWTO (R_ARM_THM_MOVT_ABS
, /* type */
760 2, /* size (0 = byte, 1 = short, 2 = long) */
762 FALSE
, /* pc_relative */
764 complain_overflow_bitfield
,/* complain_on_overflow */
765 bfd_elf_generic_reloc
, /* special_function */
766 "R_ARM_THM_MOVT_ABS", /* name */
767 FALSE
, /* partial_inplace */
768 0x040f70ff, /* src_mask */
769 0x040f70ff, /* dst_mask */
770 FALSE
), /* pcrel_offset */
772 HOWTO (R_ARM_THM_MOVW_PREL_NC
,/* type */
774 2, /* size (0 = byte, 1 = short, 2 = long) */
776 TRUE
, /* pc_relative */
778 complain_overflow_dont
,/* complain_on_overflow */
779 bfd_elf_generic_reloc
, /* special_function */
780 "R_ARM_THM_MOVW_PREL_NC",/* name */
781 FALSE
, /* partial_inplace */
782 0x040f70ff, /* src_mask */
783 0x040f70ff, /* dst_mask */
784 TRUE
), /* pcrel_offset */
786 HOWTO (R_ARM_THM_MOVT_PREL
, /* type */
788 2, /* size (0 = byte, 1 = short, 2 = long) */
790 TRUE
, /* pc_relative */
792 complain_overflow_bitfield
,/* complain_on_overflow */
793 bfd_elf_generic_reloc
, /* special_function */
794 "R_ARM_THM_MOVT_PREL", /* name */
795 FALSE
, /* partial_inplace */
796 0x040f70ff, /* src_mask */
797 0x040f70ff, /* dst_mask */
798 TRUE
), /* pcrel_offset */
800 HOWTO (R_ARM_THM_JUMP19
, /* type */
802 2, /* size (0 = byte, 1 = short, 2 = long) */
804 TRUE
, /* pc_relative */
806 complain_overflow_signed
,/* complain_on_overflow */
807 bfd_elf_generic_reloc
, /* special_function */
808 "R_ARM_THM_JUMP19", /* name */
809 FALSE
, /* partial_inplace */
810 0x043f2fff, /* src_mask */
811 0x043f2fff, /* dst_mask */
812 TRUE
), /* pcrel_offset */
814 HOWTO (R_ARM_THM_JUMP6
, /* type */
816 1, /* size (0 = byte, 1 = short, 2 = long) */
818 TRUE
, /* pc_relative */
820 complain_overflow_unsigned
,/* complain_on_overflow */
821 bfd_elf_generic_reloc
, /* special_function */
822 "R_ARM_THM_JUMP6", /* name */
823 FALSE
, /* partial_inplace */
824 0x02f8, /* src_mask */
825 0x02f8, /* dst_mask */
826 TRUE
), /* pcrel_offset */
828 /* These are declared as 13-bit signed relocations because we can
829 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
831 HOWTO (R_ARM_THM_ALU_PREL_11_0
,/* type */
833 2, /* size (0 = byte, 1 = short, 2 = long) */
835 TRUE
, /* pc_relative */
837 complain_overflow_dont
,/* complain_on_overflow */
838 bfd_elf_generic_reloc
, /* special_function */
839 "R_ARM_THM_ALU_PREL_11_0",/* name */
840 FALSE
, /* partial_inplace */
841 0xffffffff, /* src_mask */
842 0xffffffff, /* dst_mask */
843 TRUE
), /* pcrel_offset */
845 HOWTO (R_ARM_THM_PC12
, /* type */
847 2, /* size (0 = byte, 1 = short, 2 = long) */
849 TRUE
, /* pc_relative */
851 complain_overflow_dont
,/* complain_on_overflow */
852 bfd_elf_generic_reloc
, /* special_function */
853 "R_ARM_THM_PC12", /* name */
854 FALSE
, /* partial_inplace */
855 0xffffffff, /* src_mask */
856 0xffffffff, /* dst_mask */
857 TRUE
), /* pcrel_offset */
859 HOWTO (R_ARM_ABS32_NOI
, /* type */
861 2, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE
, /* pc_relative */
865 complain_overflow_dont
,/* complain_on_overflow */
866 bfd_elf_generic_reloc
, /* special_function */
867 "R_ARM_ABS32_NOI", /* name */
868 FALSE
, /* partial_inplace */
869 0xffffffff, /* src_mask */
870 0xffffffff, /* dst_mask */
871 FALSE
), /* pcrel_offset */
873 HOWTO (R_ARM_REL32_NOI
, /* type */
875 2, /* size (0 = byte, 1 = short, 2 = long) */
877 TRUE
, /* pc_relative */
879 complain_overflow_dont
,/* complain_on_overflow */
880 bfd_elf_generic_reloc
, /* special_function */
881 "R_ARM_REL32_NOI", /* name */
882 FALSE
, /* partial_inplace */
883 0xffffffff, /* src_mask */
884 0xffffffff, /* dst_mask */
885 FALSE
), /* pcrel_offset */
887 /* Group relocations. */
889 HOWTO (R_ARM_ALU_PC_G0_NC
, /* type */
891 2, /* size (0 = byte, 1 = short, 2 = long) */
893 TRUE
, /* pc_relative */
895 complain_overflow_dont
,/* complain_on_overflow */
896 bfd_elf_generic_reloc
, /* special_function */
897 "R_ARM_ALU_PC_G0_NC", /* name */
898 FALSE
, /* partial_inplace */
899 0xffffffff, /* src_mask */
900 0xffffffff, /* dst_mask */
901 TRUE
), /* pcrel_offset */
903 HOWTO (R_ARM_ALU_PC_G0
, /* type */
905 2, /* size (0 = byte, 1 = short, 2 = long) */
907 TRUE
, /* pc_relative */
909 complain_overflow_dont
,/* complain_on_overflow */
910 bfd_elf_generic_reloc
, /* special_function */
911 "R_ARM_ALU_PC_G0", /* name */
912 FALSE
, /* partial_inplace */
913 0xffffffff, /* src_mask */
914 0xffffffff, /* dst_mask */
915 TRUE
), /* pcrel_offset */
917 HOWTO (R_ARM_ALU_PC_G1_NC
, /* type */
919 2, /* size (0 = byte, 1 = short, 2 = long) */
921 TRUE
, /* pc_relative */
923 complain_overflow_dont
,/* complain_on_overflow */
924 bfd_elf_generic_reloc
, /* special_function */
925 "R_ARM_ALU_PC_G1_NC", /* name */
926 FALSE
, /* partial_inplace */
927 0xffffffff, /* src_mask */
928 0xffffffff, /* dst_mask */
929 TRUE
), /* pcrel_offset */
931 HOWTO (R_ARM_ALU_PC_G1
, /* type */
933 2, /* size (0 = byte, 1 = short, 2 = long) */
935 TRUE
, /* pc_relative */
937 complain_overflow_dont
,/* complain_on_overflow */
938 bfd_elf_generic_reloc
, /* special_function */
939 "R_ARM_ALU_PC_G1", /* name */
940 FALSE
, /* partial_inplace */
941 0xffffffff, /* src_mask */
942 0xffffffff, /* dst_mask */
943 TRUE
), /* pcrel_offset */
945 HOWTO (R_ARM_ALU_PC_G2
, /* type */
947 2, /* size (0 = byte, 1 = short, 2 = long) */
949 TRUE
, /* pc_relative */
951 complain_overflow_dont
,/* complain_on_overflow */
952 bfd_elf_generic_reloc
, /* special_function */
953 "R_ARM_ALU_PC_G2", /* name */
954 FALSE
, /* partial_inplace */
955 0xffffffff, /* src_mask */
956 0xffffffff, /* dst_mask */
957 TRUE
), /* pcrel_offset */
959 HOWTO (R_ARM_LDR_PC_G1
, /* type */
961 2, /* size (0 = byte, 1 = short, 2 = long) */
963 TRUE
, /* pc_relative */
965 complain_overflow_dont
,/* complain_on_overflow */
966 bfd_elf_generic_reloc
, /* special_function */
967 "R_ARM_LDR_PC_G1", /* name */
968 FALSE
, /* partial_inplace */
969 0xffffffff, /* src_mask */
970 0xffffffff, /* dst_mask */
971 TRUE
), /* pcrel_offset */
973 HOWTO (R_ARM_LDR_PC_G2
, /* type */
975 2, /* size (0 = byte, 1 = short, 2 = long) */
977 TRUE
, /* pc_relative */
979 complain_overflow_dont
,/* complain_on_overflow */
980 bfd_elf_generic_reloc
, /* special_function */
981 "R_ARM_LDR_PC_G2", /* name */
982 FALSE
, /* partial_inplace */
983 0xffffffff, /* src_mask */
984 0xffffffff, /* dst_mask */
985 TRUE
), /* pcrel_offset */
987 HOWTO (R_ARM_LDRS_PC_G0
, /* type */
989 2, /* size (0 = byte, 1 = short, 2 = long) */
991 TRUE
, /* pc_relative */
993 complain_overflow_dont
,/* complain_on_overflow */
994 bfd_elf_generic_reloc
, /* special_function */
995 "R_ARM_LDRS_PC_G0", /* name */
996 FALSE
, /* partial_inplace */
997 0xffffffff, /* src_mask */
998 0xffffffff, /* dst_mask */
999 TRUE
), /* pcrel_offset */
1001 HOWTO (R_ARM_LDRS_PC_G1
, /* type */
1003 2, /* size (0 = byte, 1 = short, 2 = long) */
1005 TRUE
, /* pc_relative */
1007 complain_overflow_dont
,/* complain_on_overflow */
1008 bfd_elf_generic_reloc
, /* special_function */
1009 "R_ARM_LDRS_PC_G1", /* name */
1010 FALSE
, /* partial_inplace */
1011 0xffffffff, /* src_mask */
1012 0xffffffff, /* dst_mask */
1013 TRUE
), /* pcrel_offset */
1015 HOWTO (R_ARM_LDRS_PC_G2
, /* type */
1017 2, /* size (0 = byte, 1 = short, 2 = long) */
1019 TRUE
, /* pc_relative */
1021 complain_overflow_dont
,/* complain_on_overflow */
1022 bfd_elf_generic_reloc
, /* special_function */
1023 "R_ARM_LDRS_PC_G2", /* name */
1024 FALSE
, /* partial_inplace */
1025 0xffffffff, /* src_mask */
1026 0xffffffff, /* dst_mask */
1027 TRUE
), /* pcrel_offset */
1029 HOWTO (R_ARM_LDC_PC_G0
, /* type */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 TRUE
, /* pc_relative */
1035 complain_overflow_dont
,/* complain_on_overflow */
1036 bfd_elf_generic_reloc
, /* special_function */
1037 "R_ARM_LDC_PC_G0", /* name */
1038 FALSE
, /* partial_inplace */
1039 0xffffffff, /* src_mask */
1040 0xffffffff, /* dst_mask */
1041 TRUE
), /* pcrel_offset */
1043 HOWTO (R_ARM_LDC_PC_G1
, /* type */
1045 2, /* size (0 = byte, 1 = short, 2 = long) */
1047 TRUE
, /* pc_relative */
1049 complain_overflow_dont
,/* complain_on_overflow */
1050 bfd_elf_generic_reloc
, /* special_function */
1051 "R_ARM_LDC_PC_G1", /* name */
1052 FALSE
, /* partial_inplace */
1053 0xffffffff, /* src_mask */
1054 0xffffffff, /* dst_mask */
1055 TRUE
), /* pcrel_offset */
1057 HOWTO (R_ARM_LDC_PC_G2
, /* type */
1059 2, /* size (0 = byte, 1 = short, 2 = long) */
1061 TRUE
, /* pc_relative */
1063 complain_overflow_dont
,/* complain_on_overflow */
1064 bfd_elf_generic_reloc
, /* special_function */
1065 "R_ARM_LDC_PC_G2", /* name */
1066 FALSE
, /* partial_inplace */
1067 0xffffffff, /* src_mask */
1068 0xffffffff, /* dst_mask */
1069 TRUE
), /* pcrel_offset */
1071 HOWTO (R_ARM_ALU_SB_G0_NC
, /* type */
1073 2, /* size (0 = byte, 1 = short, 2 = long) */
1075 TRUE
, /* pc_relative */
1077 complain_overflow_dont
,/* complain_on_overflow */
1078 bfd_elf_generic_reloc
, /* special_function */
1079 "R_ARM_ALU_SB_G0_NC", /* name */
1080 FALSE
, /* partial_inplace */
1081 0xffffffff, /* src_mask */
1082 0xffffffff, /* dst_mask */
1083 TRUE
), /* pcrel_offset */
1085 HOWTO (R_ARM_ALU_SB_G0
, /* type */
1087 2, /* size (0 = byte, 1 = short, 2 = long) */
1089 TRUE
, /* pc_relative */
1091 complain_overflow_dont
,/* complain_on_overflow */
1092 bfd_elf_generic_reloc
, /* special_function */
1093 "R_ARM_ALU_SB_G0", /* name */
1094 FALSE
, /* partial_inplace */
1095 0xffffffff, /* src_mask */
1096 0xffffffff, /* dst_mask */
1097 TRUE
), /* pcrel_offset */
1099 HOWTO (R_ARM_ALU_SB_G1_NC
, /* type */
1101 2, /* size (0 = byte, 1 = short, 2 = long) */
1103 TRUE
, /* pc_relative */
1105 complain_overflow_dont
,/* complain_on_overflow */
1106 bfd_elf_generic_reloc
, /* special_function */
1107 "R_ARM_ALU_SB_G1_NC", /* name */
1108 FALSE
, /* partial_inplace */
1109 0xffffffff, /* src_mask */
1110 0xffffffff, /* dst_mask */
1111 TRUE
), /* pcrel_offset */
1113 HOWTO (R_ARM_ALU_SB_G1
, /* type */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1117 TRUE
, /* pc_relative */
1119 complain_overflow_dont
,/* complain_on_overflow */
1120 bfd_elf_generic_reloc
, /* special_function */
1121 "R_ARM_ALU_SB_G1", /* name */
1122 FALSE
, /* partial_inplace */
1123 0xffffffff, /* src_mask */
1124 0xffffffff, /* dst_mask */
1125 TRUE
), /* pcrel_offset */
1127 HOWTO (R_ARM_ALU_SB_G2
, /* type */
1129 2, /* size (0 = byte, 1 = short, 2 = long) */
1131 TRUE
, /* pc_relative */
1133 complain_overflow_dont
,/* complain_on_overflow */
1134 bfd_elf_generic_reloc
, /* special_function */
1135 "R_ARM_ALU_SB_G2", /* name */
1136 FALSE
, /* partial_inplace */
1137 0xffffffff, /* src_mask */
1138 0xffffffff, /* dst_mask */
1139 TRUE
), /* pcrel_offset */
1141 HOWTO (R_ARM_LDR_SB_G0
, /* type */
1143 2, /* size (0 = byte, 1 = short, 2 = long) */
1145 TRUE
, /* pc_relative */
1147 complain_overflow_dont
,/* complain_on_overflow */
1148 bfd_elf_generic_reloc
, /* special_function */
1149 "R_ARM_LDR_SB_G0", /* name */
1150 FALSE
, /* partial_inplace */
1151 0xffffffff, /* src_mask */
1152 0xffffffff, /* dst_mask */
1153 TRUE
), /* pcrel_offset */
1155 HOWTO (R_ARM_LDR_SB_G1
, /* type */
1157 2, /* size (0 = byte, 1 = short, 2 = long) */
1159 TRUE
, /* pc_relative */
1161 complain_overflow_dont
,/* complain_on_overflow */
1162 bfd_elf_generic_reloc
, /* special_function */
1163 "R_ARM_LDR_SB_G1", /* name */
1164 FALSE
, /* partial_inplace */
1165 0xffffffff, /* src_mask */
1166 0xffffffff, /* dst_mask */
1167 TRUE
), /* pcrel_offset */
1169 HOWTO (R_ARM_LDR_SB_G2
, /* type */
1171 2, /* size (0 = byte, 1 = short, 2 = long) */
1173 TRUE
, /* pc_relative */
1175 complain_overflow_dont
,/* complain_on_overflow */
1176 bfd_elf_generic_reloc
, /* special_function */
1177 "R_ARM_LDR_SB_G2", /* name */
1178 FALSE
, /* partial_inplace */
1179 0xffffffff, /* src_mask */
1180 0xffffffff, /* dst_mask */
1181 TRUE
), /* pcrel_offset */
1183 HOWTO (R_ARM_LDRS_SB_G0
, /* type */
1185 2, /* size (0 = byte, 1 = short, 2 = long) */
1187 TRUE
, /* pc_relative */
1189 complain_overflow_dont
,/* complain_on_overflow */
1190 bfd_elf_generic_reloc
, /* special_function */
1191 "R_ARM_LDRS_SB_G0", /* name */
1192 FALSE
, /* partial_inplace */
1193 0xffffffff, /* src_mask */
1194 0xffffffff, /* dst_mask */
1195 TRUE
), /* pcrel_offset */
1197 HOWTO (R_ARM_LDRS_SB_G1
, /* type */
1199 2, /* size (0 = byte, 1 = short, 2 = long) */
1201 TRUE
, /* pc_relative */
1203 complain_overflow_dont
,/* complain_on_overflow */
1204 bfd_elf_generic_reloc
, /* special_function */
1205 "R_ARM_LDRS_SB_G1", /* name */
1206 FALSE
, /* partial_inplace */
1207 0xffffffff, /* src_mask */
1208 0xffffffff, /* dst_mask */
1209 TRUE
), /* pcrel_offset */
1211 HOWTO (R_ARM_LDRS_SB_G2
, /* type */
1213 2, /* size (0 = byte, 1 = short, 2 = long) */
1215 TRUE
, /* pc_relative */
1217 complain_overflow_dont
,/* complain_on_overflow */
1218 bfd_elf_generic_reloc
, /* special_function */
1219 "R_ARM_LDRS_SB_G2", /* name */
1220 FALSE
, /* partial_inplace */
1221 0xffffffff, /* src_mask */
1222 0xffffffff, /* dst_mask */
1223 TRUE
), /* pcrel_offset */
1225 HOWTO (R_ARM_LDC_SB_G0
, /* type */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 TRUE
, /* pc_relative */
1231 complain_overflow_dont
,/* complain_on_overflow */
1232 bfd_elf_generic_reloc
, /* special_function */
1233 "R_ARM_LDC_SB_G0", /* name */
1234 FALSE
, /* partial_inplace */
1235 0xffffffff, /* src_mask */
1236 0xffffffff, /* dst_mask */
1237 TRUE
), /* pcrel_offset */
1239 HOWTO (R_ARM_LDC_SB_G1
, /* type */
1241 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 TRUE
, /* pc_relative */
1245 complain_overflow_dont
,/* complain_on_overflow */
1246 bfd_elf_generic_reloc
, /* special_function */
1247 "R_ARM_LDC_SB_G1", /* name */
1248 FALSE
, /* partial_inplace */
1249 0xffffffff, /* src_mask */
1250 0xffffffff, /* dst_mask */
1251 TRUE
), /* pcrel_offset */
1253 HOWTO (R_ARM_LDC_SB_G2
, /* type */
1255 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 TRUE
, /* pc_relative */
1259 complain_overflow_dont
,/* complain_on_overflow */
1260 bfd_elf_generic_reloc
, /* special_function */
1261 "R_ARM_LDC_SB_G2", /* name */
1262 FALSE
, /* partial_inplace */
1263 0xffffffff, /* src_mask */
1264 0xffffffff, /* dst_mask */
1265 TRUE
), /* pcrel_offset */
1267 /* End of group relocations. */
1269 HOWTO (R_ARM_MOVW_BREL_NC
, /* type */
1271 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 FALSE
, /* pc_relative */
1275 complain_overflow_dont
,/* complain_on_overflow */
1276 bfd_elf_generic_reloc
, /* special_function */
1277 "R_ARM_MOVW_BREL_NC", /* name */
1278 FALSE
, /* partial_inplace */
1279 0x0000ffff, /* src_mask */
1280 0x0000ffff, /* dst_mask */
1281 FALSE
), /* pcrel_offset */
1283 HOWTO (R_ARM_MOVT_BREL
, /* type */
1285 2, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE
, /* pc_relative */
1289 complain_overflow_bitfield
,/* complain_on_overflow */
1290 bfd_elf_generic_reloc
, /* special_function */
1291 "R_ARM_MOVT_BREL", /* name */
1292 FALSE
, /* partial_inplace */
1293 0x0000ffff, /* src_mask */
1294 0x0000ffff, /* dst_mask */
1295 FALSE
), /* pcrel_offset */
1297 HOWTO (R_ARM_MOVW_BREL
, /* type */
1299 2, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE
, /* pc_relative */
1303 complain_overflow_dont
,/* complain_on_overflow */
1304 bfd_elf_generic_reloc
, /* special_function */
1305 "R_ARM_MOVW_BREL", /* name */
1306 FALSE
, /* partial_inplace */
1307 0x0000ffff, /* src_mask */
1308 0x0000ffff, /* dst_mask */
1309 FALSE
), /* pcrel_offset */
1311 HOWTO (R_ARM_THM_MOVW_BREL_NC
,/* type */
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE
, /* pc_relative */
1317 complain_overflow_dont
,/* complain_on_overflow */
1318 bfd_elf_generic_reloc
, /* special_function */
1319 "R_ARM_THM_MOVW_BREL_NC",/* name */
1320 FALSE
, /* partial_inplace */
1321 0x040f70ff, /* src_mask */
1322 0x040f70ff, /* dst_mask */
1323 FALSE
), /* pcrel_offset */
1325 HOWTO (R_ARM_THM_MOVT_BREL
, /* type */
1327 2, /* size (0 = byte, 1 = short, 2 = long) */
1329 FALSE
, /* pc_relative */
1331 complain_overflow_bitfield
,/* complain_on_overflow */
1332 bfd_elf_generic_reloc
, /* special_function */
1333 "R_ARM_THM_MOVT_BREL", /* name */
1334 FALSE
, /* partial_inplace */
1335 0x040f70ff, /* src_mask */
1336 0x040f70ff, /* dst_mask */
1337 FALSE
), /* pcrel_offset */
1339 HOWTO (R_ARM_THM_MOVW_BREL
, /* type */
1341 2, /* size (0 = byte, 1 = short, 2 = long) */
1343 FALSE
, /* pc_relative */
1345 complain_overflow_dont
,/* complain_on_overflow */
1346 bfd_elf_generic_reloc
, /* special_function */
1347 "R_ARM_THM_MOVW_BREL", /* name */
1348 FALSE
, /* partial_inplace */
1349 0x040f70ff, /* src_mask */
1350 0x040f70ff, /* dst_mask */
1351 FALSE
), /* pcrel_offset */
1353 EMPTY_HOWTO (90), /* unallocated */
1358 HOWTO (R_ARM_PLT32_ABS
, /* type */
1360 2, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE
, /* pc_relative */
1364 complain_overflow_dont
,/* complain_on_overflow */
1365 bfd_elf_generic_reloc
, /* special_function */
1366 "R_ARM_PLT32_ABS", /* name */
1367 FALSE
, /* partial_inplace */
1368 0xffffffff, /* src_mask */
1369 0xffffffff, /* dst_mask */
1370 FALSE
), /* pcrel_offset */
1372 HOWTO (R_ARM_GOT_ABS
, /* type */
1374 2, /* size (0 = byte, 1 = short, 2 = long) */
1376 FALSE
, /* pc_relative */
1378 complain_overflow_dont
,/* complain_on_overflow */
1379 bfd_elf_generic_reloc
, /* special_function */
1380 "R_ARM_GOT_ABS", /* name */
1381 FALSE
, /* partial_inplace */
1382 0xffffffff, /* src_mask */
1383 0xffffffff, /* dst_mask */
1384 FALSE
), /* pcrel_offset */
1386 HOWTO (R_ARM_GOT_PREL
, /* type */
1388 2, /* size (0 = byte, 1 = short, 2 = long) */
1390 TRUE
, /* pc_relative */
1392 complain_overflow_dont
, /* complain_on_overflow */
1393 bfd_elf_generic_reloc
, /* special_function */
1394 "R_ARM_GOT_PREL", /* name */
1395 FALSE
, /* partial_inplace */
1396 0xffffffff, /* src_mask */
1397 0xffffffff, /* dst_mask */
1398 TRUE
), /* pcrel_offset */
1400 HOWTO (R_ARM_GOT_BREL12
, /* type */
1402 2, /* size (0 = byte, 1 = short, 2 = long) */
1404 FALSE
, /* pc_relative */
1406 complain_overflow_bitfield
,/* complain_on_overflow */
1407 bfd_elf_generic_reloc
, /* special_function */
1408 "R_ARM_GOT_BREL12", /* name */
1409 FALSE
, /* partial_inplace */
1410 0x00000fff, /* src_mask */
1411 0x00000fff, /* dst_mask */
1412 FALSE
), /* pcrel_offset */
1414 HOWTO (R_ARM_GOTOFF12
, /* type */
1416 2, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE
, /* pc_relative */
1420 complain_overflow_bitfield
,/* complain_on_overflow */
1421 bfd_elf_generic_reloc
, /* special_function */
1422 "R_ARM_GOTOFF12", /* name */
1423 FALSE
, /* partial_inplace */
1424 0x00000fff, /* src_mask */
1425 0x00000fff, /* dst_mask */
1426 FALSE
), /* pcrel_offset */
1428 EMPTY_HOWTO (R_ARM_GOTRELAX
), /* reserved for future GOT-load optimizations */
1430 /* GNU extension to record C++ vtable member usage */
1431 HOWTO (R_ARM_GNU_VTENTRY
, /* type */
1433 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE
, /* pc_relative */
1437 complain_overflow_dont
, /* complain_on_overflow */
1438 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
1439 "R_ARM_GNU_VTENTRY", /* name */
1440 FALSE
, /* partial_inplace */
1443 FALSE
), /* pcrel_offset */
1445 /* GNU extension to record C++ vtable hierarchy */
1446 HOWTO (R_ARM_GNU_VTINHERIT
, /* type */
1448 2, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE
, /* pc_relative */
1452 complain_overflow_dont
, /* complain_on_overflow */
1453 NULL
, /* special_function */
1454 "R_ARM_GNU_VTINHERIT", /* name */
1455 FALSE
, /* partial_inplace */
1458 FALSE
), /* pcrel_offset */
1460 HOWTO (R_ARM_THM_JUMP11
, /* type */
1462 1, /* size (0 = byte, 1 = short, 2 = long) */
1464 TRUE
, /* pc_relative */
1466 complain_overflow_signed
, /* complain_on_overflow */
1467 bfd_elf_generic_reloc
, /* special_function */
1468 "R_ARM_THM_JUMP11", /* name */
1469 FALSE
, /* partial_inplace */
1470 0x000007ff, /* src_mask */
1471 0x000007ff, /* dst_mask */
1472 TRUE
), /* pcrel_offset */
1474 HOWTO (R_ARM_THM_JUMP8
, /* type */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 TRUE
, /* pc_relative */
1480 complain_overflow_signed
, /* complain_on_overflow */
1481 bfd_elf_generic_reloc
, /* special_function */
1482 "R_ARM_THM_JUMP8", /* name */
1483 FALSE
, /* partial_inplace */
1484 0x000000ff, /* src_mask */
1485 0x000000ff, /* dst_mask */
1486 TRUE
), /* pcrel_offset */
1488 /* TLS relocations */
1489 HOWTO (R_ARM_TLS_GD32
, /* type */
1491 2, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE
, /* pc_relative */
1495 complain_overflow_bitfield
,/* complain_on_overflow */
1496 NULL
, /* special_function */
1497 "R_ARM_TLS_GD32", /* name */
1498 TRUE
, /* partial_inplace */
1499 0xffffffff, /* src_mask */
1500 0xffffffff, /* dst_mask */
1501 FALSE
), /* pcrel_offset */
1503 HOWTO (R_ARM_TLS_LDM32
, /* type */
1505 2, /* size (0 = byte, 1 = short, 2 = long) */
1507 FALSE
, /* pc_relative */
1509 complain_overflow_bitfield
,/* complain_on_overflow */
1510 bfd_elf_generic_reloc
, /* special_function */
1511 "R_ARM_TLS_LDM32", /* name */
1512 TRUE
, /* partial_inplace */
1513 0xffffffff, /* src_mask */
1514 0xffffffff, /* dst_mask */
1515 FALSE
), /* pcrel_offset */
1517 HOWTO (R_ARM_TLS_LDO32
, /* type */
1519 2, /* size (0 = byte, 1 = short, 2 = long) */
1521 FALSE
, /* pc_relative */
1523 complain_overflow_bitfield
,/* complain_on_overflow */
1524 bfd_elf_generic_reloc
, /* special_function */
1525 "R_ARM_TLS_LDO32", /* name */
1526 TRUE
, /* partial_inplace */
1527 0xffffffff, /* src_mask */
1528 0xffffffff, /* dst_mask */
1529 FALSE
), /* pcrel_offset */
1531 HOWTO (R_ARM_TLS_IE32
, /* type */
1533 2, /* size (0 = byte, 1 = short, 2 = long) */
1535 FALSE
, /* pc_relative */
1537 complain_overflow_bitfield
,/* complain_on_overflow */
1538 NULL
, /* special_function */
1539 "R_ARM_TLS_IE32", /* name */
1540 TRUE
, /* partial_inplace */
1541 0xffffffff, /* src_mask */
1542 0xffffffff, /* dst_mask */
1543 FALSE
), /* pcrel_offset */
1545 HOWTO (R_ARM_TLS_LE32
, /* type */
1547 2, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE
, /* pc_relative */
1551 complain_overflow_bitfield
,/* complain_on_overflow */
1552 bfd_elf_generic_reloc
, /* special_function */
1553 "R_ARM_TLS_LE32", /* name */
1554 TRUE
, /* partial_inplace */
1555 0xffffffff, /* src_mask */
1556 0xffffffff, /* dst_mask */
1557 FALSE
), /* pcrel_offset */
1559 HOWTO (R_ARM_TLS_LDO12
, /* type */
1561 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE
, /* pc_relative */
1565 complain_overflow_bitfield
,/* complain_on_overflow */
1566 bfd_elf_generic_reloc
, /* special_function */
1567 "R_ARM_TLS_LDO12", /* name */
1568 FALSE
, /* partial_inplace */
1569 0x00000fff, /* src_mask */
1570 0x00000fff, /* dst_mask */
1571 FALSE
), /* pcrel_offset */
1573 HOWTO (R_ARM_TLS_LE12
, /* type */
1575 2, /* size (0 = byte, 1 = short, 2 = long) */
1577 FALSE
, /* pc_relative */
1579 complain_overflow_bitfield
,/* complain_on_overflow */
1580 bfd_elf_generic_reloc
, /* special_function */
1581 "R_ARM_TLS_LE12", /* name */
1582 FALSE
, /* partial_inplace */
1583 0x00000fff, /* src_mask */
1584 0x00000fff, /* dst_mask */
1585 FALSE
), /* pcrel_offset */
1587 HOWTO (R_ARM_TLS_IE12GP
, /* type */
1589 2, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE
, /* pc_relative */
1593 complain_overflow_bitfield
,/* complain_on_overflow */
1594 bfd_elf_generic_reloc
, /* special_function */
1595 "R_ARM_TLS_IE12GP", /* name */
1596 FALSE
, /* partial_inplace */
1597 0x00000fff, /* src_mask */
1598 0x00000fff, /* dst_mask */
1599 FALSE
), /* pcrel_offset */
1602 /* 112-127 private relocations
1603 128 R_ARM_ME_TOO, obsolete
1604 129-255 unallocated in AAELF.
1606 249-255 extended, currently unused, relocations: */
1608 static reloc_howto_type elf32_arm_howto_table_2
[4] =
1610 HOWTO (R_ARM_RREL32
, /* type */
1612 0, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE
, /* pc_relative */
1616 complain_overflow_dont
,/* complain_on_overflow */
1617 bfd_elf_generic_reloc
, /* special_function */
1618 "R_ARM_RREL32", /* name */
1619 FALSE
, /* partial_inplace */
1622 FALSE
), /* pcrel_offset */
1624 HOWTO (R_ARM_RABS32
, /* type */
1626 0, /* size (0 = byte, 1 = short, 2 = long) */
1628 FALSE
, /* pc_relative */
1630 complain_overflow_dont
,/* complain_on_overflow */
1631 bfd_elf_generic_reloc
, /* special_function */
1632 "R_ARM_RABS32", /* name */
1633 FALSE
, /* partial_inplace */
1636 FALSE
), /* pcrel_offset */
1638 HOWTO (R_ARM_RPC24
, /* type */
1640 0, /* size (0 = byte, 1 = short, 2 = long) */
1642 FALSE
, /* pc_relative */
1644 complain_overflow_dont
,/* complain_on_overflow */
1645 bfd_elf_generic_reloc
, /* special_function */
1646 "R_ARM_RPC24", /* name */
1647 FALSE
, /* partial_inplace */
1650 FALSE
), /* pcrel_offset */
1652 HOWTO (R_ARM_RBASE
, /* type */
1654 0, /* size (0 = byte, 1 = short, 2 = long) */
1656 FALSE
, /* pc_relative */
1658 complain_overflow_dont
,/* complain_on_overflow */
1659 bfd_elf_generic_reloc
, /* special_function */
1660 "R_ARM_RBASE", /* name */
1661 FALSE
, /* partial_inplace */
1664 FALSE
) /* pcrel_offset */
1667 static reloc_howto_type
*
1668 elf32_arm_howto_from_type (unsigned int r_type
)
1670 if (r_type
< NUM_ELEM (elf32_arm_howto_table_1
))
1671 return &elf32_arm_howto_table_1
[r_type
];
1673 if (r_type
>= R_ARM_RREL32
1674 && r_type
< R_ARM_RREL32
+ NUM_ELEM (elf32_arm_howto_table_2
))
1675 return &elf32_arm_howto_table_2
[r_type
- R_ARM_RREL32
];
1681 elf32_arm_info_to_howto (bfd
* abfd ATTRIBUTE_UNUSED
, arelent
* bfd_reloc
,
1682 Elf_Internal_Rela
* elf_reloc
)
1684 unsigned int r_type
;
1686 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1687 bfd_reloc
->howto
= elf32_arm_howto_from_type (r_type
);
1690 struct elf32_arm_reloc_map
1692 bfd_reloc_code_real_type bfd_reloc_val
;
1693 unsigned char elf_reloc_val
;
1696 /* All entries in this list must also be present in elf32_arm_howto_table. */
1697 static const struct elf32_arm_reloc_map elf32_arm_reloc_map
[] =
1699 {BFD_RELOC_NONE
, R_ARM_NONE
},
1700 {BFD_RELOC_ARM_PCREL_BRANCH
, R_ARM_PC24
},
1701 {BFD_RELOC_ARM_PCREL_CALL
, R_ARM_CALL
},
1702 {BFD_RELOC_ARM_PCREL_JUMP
, R_ARM_JUMP24
},
1703 {BFD_RELOC_ARM_PCREL_BLX
, R_ARM_XPC25
},
1704 {BFD_RELOC_THUMB_PCREL_BLX
, R_ARM_THM_XPC22
},
1705 {BFD_RELOC_32
, R_ARM_ABS32
},
1706 {BFD_RELOC_32_PCREL
, R_ARM_REL32
},
1707 {BFD_RELOC_8
, R_ARM_ABS8
},
1708 {BFD_RELOC_16
, R_ARM_ABS16
},
1709 {BFD_RELOC_ARM_OFFSET_IMM
, R_ARM_ABS12
},
1710 {BFD_RELOC_ARM_THUMB_OFFSET
, R_ARM_THM_ABS5
},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH25
, R_ARM_THM_JUMP24
},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH23
, R_ARM_THM_CALL
},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH12
, R_ARM_THM_JUMP11
},
1714 {BFD_RELOC_THUMB_PCREL_BRANCH20
, R_ARM_THM_JUMP19
},
1715 {BFD_RELOC_THUMB_PCREL_BRANCH9
, R_ARM_THM_JUMP8
},
1716 {BFD_RELOC_THUMB_PCREL_BRANCH7
, R_ARM_THM_JUMP6
},
1717 {BFD_RELOC_ARM_GLOB_DAT
, R_ARM_GLOB_DAT
},
1718 {BFD_RELOC_ARM_JUMP_SLOT
, R_ARM_JUMP_SLOT
},
1719 {BFD_RELOC_ARM_RELATIVE
, R_ARM_RELATIVE
},
1720 {BFD_RELOC_ARM_GOTOFF
, R_ARM_GOTOFF32
},
1721 {BFD_RELOC_ARM_GOTPC
, R_ARM_GOTPC
},
1722 {BFD_RELOC_ARM_GOT32
, R_ARM_GOT32
},
1723 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1724 {BFD_RELOC_ARM_TARGET1
, R_ARM_TARGET1
},
1725 {BFD_RELOC_ARM_ROSEGREL32
, R_ARM_ROSEGREL32
},
1726 {BFD_RELOC_ARM_SBREL32
, R_ARM_SBREL32
},
1727 {BFD_RELOC_ARM_PREL31
, R_ARM_PREL31
},
1728 {BFD_RELOC_ARM_TARGET2
, R_ARM_TARGET2
},
1729 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1730 {BFD_RELOC_ARM_TLS_GD32
, R_ARM_TLS_GD32
},
1731 {BFD_RELOC_ARM_TLS_LDO32
, R_ARM_TLS_LDO32
},
1732 {BFD_RELOC_ARM_TLS_LDM32
, R_ARM_TLS_LDM32
},
1733 {BFD_RELOC_ARM_TLS_DTPMOD32
, R_ARM_TLS_DTPMOD32
},
1734 {BFD_RELOC_ARM_TLS_DTPOFF32
, R_ARM_TLS_DTPOFF32
},
1735 {BFD_RELOC_ARM_TLS_TPOFF32
, R_ARM_TLS_TPOFF32
},
1736 {BFD_RELOC_ARM_TLS_IE32
, R_ARM_TLS_IE32
},
1737 {BFD_RELOC_ARM_TLS_LE32
, R_ARM_TLS_LE32
},
1738 {BFD_RELOC_VTABLE_INHERIT
, R_ARM_GNU_VTINHERIT
},
1739 {BFD_RELOC_VTABLE_ENTRY
, R_ARM_GNU_VTENTRY
},
1740 {BFD_RELOC_ARM_MOVW
, R_ARM_MOVW_ABS_NC
},
1741 {BFD_RELOC_ARM_MOVT
, R_ARM_MOVT_ABS
},
1742 {BFD_RELOC_ARM_MOVW_PCREL
, R_ARM_MOVW_PREL_NC
},
1743 {BFD_RELOC_ARM_MOVT_PCREL
, R_ARM_MOVT_PREL
},
1744 {BFD_RELOC_ARM_THUMB_MOVW
, R_ARM_THM_MOVW_ABS_NC
},
1745 {BFD_RELOC_ARM_THUMB_MOVT
, R_ARM_THM_MOVT_ABS
},
1746 {BFD_RELOC_ARM_THUMB_MOVW_PCREL
, R_ARM_THM_MOVW_PREL_NC
},
1747 {BFD_RELOC_ARM_THUMB_MOVT_PCREL
, R_ARM_THM_MOVT_PREL
},
1748 {BFD_RELOC_ARM_ALU_PC_G0_NC
, R_ARM_ALU_PC_G0_NC
},
1749 {BFD_RELOC_ARM_ALU_PC_G0
, R_ARM_ALU_PC_G0
},
1750 {BFD_RELOC_ARM_ALU_PC_G1_NC
, R_ARM_ALU_PC_G1_NC
},
1751 {BFD_RELOC_ARM_ALU_PC_G1
, R_ARM_ALU_PC_G1
},
1752 {BFD_RELOC_ARM_ALU_PC_G2
, R_ARM_ALU_PC_G2
},
1753 {BFD_RELOC_ARM_LDR_PC_G0
, R_ARM_LDR_PC_G0
},
1754 {BFD_RELOC_ARM_LDR_PC_G1
, R_ARM_LDR_PC_G1
},
1755 {BFD_RELOC_ARM_LDR_PC_G2
, R_ARM_LDR_PC_G2
},
1756 {BFD_RELOC_ARM_LDRS_PC_G0
, R_ARM_LDRS_PC_G0
},
1757 {BFD_RELOC_ARM_LDRS_PC_G1
, R_ARM_LDRS_PC_G1
},
1758 {BFD_RELOC_ARM_LDRS_PC_G2
, R_ARM_LDRS_PC_G2
},
1759 {BFD_RELOC_ARM_LDC_PC_G0
, R_ARM_LDC_PC_G0
},
1760 {BFD_RELOC_ARM_LDC_PC_G1
, R_ARM_LDC_PC_G1
},
1761 {BFD_RELOC_ARM_LDC_PC_G2
, R_ARM_LDC_PC_G2
},
1762 {BFD_RELOC_ARM_ALU_SB_G0_NC
, R_ARM_ALU_SB_G0_NC
},
1763 {BFD_RELOC_ARM_ALU_SB_G0
, R_ARM_ALU_SB_G0
},
1764 {BFD_RELOC_ARM_ALU_SB_G1_NC
, R_ARM_ALU_SB_G1_NC
},
1765 {BFD_RELOC_ARM_ALU_SB_G1
, R_ARM_ALU_SB_G1
},
1766 {BFD_RELOC_ARM_ALU_SB_G2
, R_ARM_ALU_SB_G2
},
1767 {BFD_RELOC_ARM_LDR_SB_G0
, R_ARM_LDR_SB_G0
},
1768 {BFD_RELOC_ARM_LDR_SB_G1
, R_ARM_LDR_SB_G1
},
1769 {BFD_RELOC_ARM_LDR_SB_G2
, R_ARM_LDR_SB_G2
},
1770 {BFD_RELOC_ARM_LDRS_SB_G0
, R_ARM_LDRS_SB_G0
},
1771 {BFD_RELOC_ARM_LDRS_SB_G1
, R_ARM_LDRS_SB_G1
},
1772 {BFD_RELOC_ARM_LDRS_SB_G2
, R_ARM_LDRS_SB_G2
},
1773 {BFD_RELOC_ARM_LDC_SB_G0
, R_ARM_LDC_SB_G0
},
1774 {BFD_RELOC_ARM_LDC_SB_G1
, R_ARM_LDC_SB_G1
},
1775 {BFD_RELOC_ARM_LDC_SB_G2
, R_ARM_LDC_SB_G2
}
1778 static reloc_howto_type
*
1779 elf32_arm_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1780 bfd_reloc_code_real_type code
)
1783 for (i
= 0; i
< NUM_ELEM (elf32_arm_reloc_map
); i
++)
1784 if (elf32_arm_reloc_map
[i
].bfd_reloc_val
== code
)
1785 return elf32_arm_howto_from_type (elf32_arm_reloc_map
[i
].elf_reloc_val
);
1790 /* Support for core dump NOTE sections */
1792 elf32_arm_nabi_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1797 switch (note
->descsz
)
1802 case 148: /* Linux/ARM 32-bit*/
1804 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1807 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1816 /* Make a ".reg/999" section. */
1817 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1818 size
, note
->descpos
+ offset
);
1822 elf32_arm_nabi_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1824 switch (note
->descsz
)
1829 case 124: /* Linux/ARM elf_prpsinfo */
1830 elf_tdata (abfd
)->core_program
1831 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
1832 elf_tdata (abfd
)->core_command
1833 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
1836 /* Note that for some reason, a spurious space is tacked
1837 onto the end of the args in some (at least one anyway)
1838 implementations, so strip it off if it exists. */
1841 char *command
= elf_tdata (abfd
)->core_command
;
1842 int n
= strlen (command
);
1844 if (0 < n
&& command
[n
- 1] == ' ')
1845 command
[n
- 1] = '\0';
1851 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1852 #define TARGET_LITTLE_NAME "elf32-littlearm"
1853 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1854 #define TARGET_BIG_NAME "elf32-bigarm"
1856 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1857 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1859 typedef unsigned long int insn32
;
1860 typedef unsigned short int insn16
;
1862 /* In lieu of proper flags, assume all EABIv4 or later objects are
1864 #define INTERWORK_FLAG(abfd) \
1865 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1866 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1868 /* The linker script knows the section names for placement.
1869 The entry_names are used to do simple name mangling on the stubs.
1870 Given a function name, and its type, the stub can be found. The
1871 name can be changed. The only requirement is the %s be present. */
1872 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1873 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1875 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1876 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1878 /* The name of the dynamic interpreter. This is put in the .interp
1880 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1882 #ifdef FOUR_WORD_PLT
1884 /* The first entry in a procedure linkage table looks like
1885 this. It is set up so that any shared library function that is
1886 called before the relocation has been set up calls the dynamic
1888 static const bfd_vma elf32_arm_plt0_entry
[] =
1890 0xe52de004, /* str lr, [sp, #-4]! */
1891 0xe59fe010, /* ldr lr, [pc, #16] */
1892 0xe08fe00e, /* add lr, pc, lr */
1893 0xe5bef008, /* ldr pc, [lr, #8]! */
1896 /* Subsequent entries in a procedure linkage table look like
1898 static const bfd_vma elf32_arm_plt_entry
[] =
1900 0xe28fc600, /* add ip, pc, #NN */
1901 0xe28cca00, /* add ip, ip, #NN */
1902 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1903 0x00000000, /* unused */
1908 /* The first entry in a procedure linkage table looks like
1909 this. It is set up so that any shared library function that is
1910 called before the relocation has been set up calls the dynamic
1912 static const bfd_vma elf32_arm_plt0_entry
[] =
1914 0xe52de004, /* str lr, [sp, #-4]! */
1915 0xe59fe004, /* ldr lr, [pc, #4] */
1916 0xe08fe00e, /* add lr, pc, lr */
1917 0xe5bef008, /* ldr pc, [lr, #8]! */
1918 0x00000000, /* &GOT[0] - . */
1921 /* Subsequent entries in a procedure linkage table look like
1923 static const bfd_vma elf32_arm_plt_entry
[] =
1925 0xe28fc600, /* add ip, pc, #0xNN00000 */
1926 0xe28cca00, /* add ip, ip, #0xNN000 */
1927 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1932 /* The format of the first entry in the procedure linkage table
1933 for a VxWorks executable. */
1934 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry
[] =
1936 0xe52dc008, /* str ip,[sp,#-8]! */
1937 0xe59fc000, /* ldr ip,[pc] */
1938 0xe59cf008, /* ldr pc,[ip,#8] */
1939 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1942 /* The format of subsequent entries in a VxWorks executable. */
1943 static const bfd_vma elf32_arm_vxworks_exec_plt_entry
[] =
1945 0xe59fc000, /* ldr ip,[pc] */
1946 0xe59cf000, /* ldr pc,[ip] */
1947 0x00000000, /* .long @got */
1948 0xe59fc000, /* ldr ip,[pc] */
1949 0xea000000, /* b _PLT */
1950 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1953 /* The format of entries in a VxWorks shared library. */
1954 static const bfd_vma elf32_arm_vxworks_shared_plt_entry
[] =
1956 0xe59fc000, /* ldr ip,[pc] */
1957 0xe79cf009, /* ldr pc,[ip,r9] */
1958 0x00000000, /* .long @got */
1959 0xe59fc000, /* ldr ip,[pc] */
1960 0xe599f008, /* ldr pc,[r9,#8] */
1961 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1964 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1965 #define PLT_THUMB_STUB_SIZE 4
1966 static const bfd_vma elf32_arm_plt_thumb_stub
[] =
1972 /* The entries in a PLT when using a DLL-based target with multiple
1974 static const bfd_vma elf32_arm_symbian_plt_entry
[] =
1976 0xe51ff004, /* ldr pc, [pc, #-4] */
1977 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
1980 /* Used to build a map of a section. This is required for mixed-endian
1983 typedef struct elf32_elf_section_map
1988 elf32_arm_section_map
;
1990 typedef struct _arm_elf_section_data
1992 struct bfd_elf_section_data elf
;
1993 unsigned int mapcount
;
1994 elf32_arm_section_map
*map
;
1996 _arm_elf_section_data
;
1998 #define elf32_arm_section_data(sec) \
1999 ((_arm_elf_section_data *) elf_section_data (sec))
2001 /* The size of the thread control block. */
2004 #define NUM_KNOWN_ATTRIBUTES 32
2006 typedef struct aeabi_attribute
2013 typedef struct aeabi_attribute_list
2015 struct aeabi_attribute_list
*next
;
2017 aeabi_attribute attr
;
2018 } aeabi_attribute_list
;
2020 struct elf32_arm_obj_tdata
2022 struct elf_obj_tdata root
;
2024 /* tls_type for each local got entry. */
2025 char *local_got_tls_type
;
2027 aeabi_attribute known_eabi_attributes
[NUM_KNOWN_ATTRIBUTES
];
2028 aeabi_attribute_list
*other_eabi_attributes
;
2031 #define elf32_arm_tdata(abfd) \
2032 ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any)
2034 #define elf32_arm_local_got_tls_type(abfd) \
2035 (elf32_arm_tdata (abfd)->local_got_tls_type)
2038 elf32_arm_mkobject (bfd
*abfd
)
2040 if (abfd
->tdata
.any
== NULL
)
2042 bfd_size_type amt
= sizeof (struct elf32_arm_obj_tdata
);
2043 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2044 if (abfd
->tdata
.any
== NULL
)
2047 return bfd_elf_mkobject (abfd
);
2050 /* The ARM linker needs to keep track of the number of relocs that it
2051 decides to copy in check_relocs for each symbol. This is so that
2052 it can discard PC relative relocs if it doesn't need them when
2053 linking with -Bsymbolic. We store the information in a field
2054 extending the regular ELF linker hash table. */
2056 /* This structure keeps track of the number of relocs we have copied
2057 for a given symbol. */
2058 struct elf32_arm_relocs_copied
2061 struct elf32_arm_relocs_copied
* next
;
2062 /* A section in dynobj. */
2064 /* Number of relocs copied in this section. */
2065 bfd_size_type count
;
2066 /* Number of PC-relative relocs copied in this section. */
2067 bfd_size_type pc_count
;
2070 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2072 /* Arm ELF linker hash entry. */
2073 struct elf32_arm_link_hash_entry
2075 struct elf_link_hash_entry root
;
2077 /* Number of PC relative relocs copied for this symbol. */
2078 struct elf32_arm_relocs_copied
* relocs_copied
;
2080 /* We reference count Thumb references to a PLT entry separately,
2081 so that we can emit the Thumb trampoline only if needed. */
2082 bfd_signed_vma plt_thumb_refcount
;
2084 /* Since PLT entries have variable size if the Thumb prologue is
2085 used, we need to record the index into .got.plt instead of
2086 recomputing it from the PLT offset. */
2087 bfd_signed_vma plt_got_offset
;
2089 #define GOT_UNKNOWN 0
2090 #define GOT_NORMAL 1
2091 #define GOT_TLS_GD 2
2092 #define GOT_TLS_IE 4
2093 unsigned char tls_type
;
2095 /* The symbol marking the real symbol location for exported thumb
2096 symbols with Arm stubs. */
2097 struct elf_link_hash_entry
*export_glue
;
2100 /* Traverse an arm ELF linker hash table. */
2101 #define elf32_arm_link_hash_traverse(table, func, info) \
2102 (elf_link_hash_traverse \
2104 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2107 /* Get the ARM elf linker hash table from a link_info structure. */
2108 #define elf32_arm_hash_table(info) \
2109 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2111 /* ARM ELF linker hash table. */
2112 struct elf32_arm_link_hash_table
2114 /* The main hash table. */
2115 struct elf_link_hash_table root
;
2117 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2118 bfd_size_type thumb_glue_size
;
2120 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2121 bfd_size_type arm_glue_size
;
2123 /* An arbitrary input BFD chosen to hold the glue sections. */
2124 bfd
* bfd_of_glue_owner
;
2126 /* Nonzero to output a BE8 image. */
2129 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2130 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2133 /* The relocation to use for R_ARM_TARGET2 relocations. */
2136 /* Nonzero to fix BX instructions for ARMv4 targets. */
2139 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2142 /* The number of bytes in the initial entry in the PLT. */
2143 bfd_size_type plt_header_size
;
2145 /* The number of bytes in the subsequent PLT etries. */
2146 bfd_size_type plt_entry_size
;
2148 /* True if the target system is VxWorks. */
2151 /* True if the target system is Symbian OS. */
2154 /* True if the target uses REL relocations. */
2157 /* Short-cuts to get to dynamic linker sections. */
2166 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2169 /* Data for R_ARM_TLS_LDM32 relocations. */
2171 bfd_signed_vma refcount
;
2175 /* Small local sym to section mapping cache. */
2176 struct sym_sec_cache sym_sec
;
2178 /* For convenience in allocate_dynrelocs. */
2182 /* Create an entry in an ARM ELF linker hash table. */
2184 static struct bfd_hash_entry
*
2185 elf32_arm_link_hash_newfunc (struct bfd_hash_entry
* entry
,
2186 struct bfd_hash_table
* table
,
2187 const char * string
)
2189 struct elf32_arm_link_hash_entry
* ret
=
2190 (struct elf32_arm_link_hash_entry
*) entry
;
2192 /* Allocate the structure if it has not already been allocated by a
2194 if (ret
== (struct elf32_arm_link_hash_entry
*) NULL
)
2195 ret
= bfd_hash_allocate (table
, sizeof (struct elf32_arm_link_hash_entry
));
2197 return (struct bfd_hash_entry
*) ret
;
2199 /* Call the allocation method of the superclass. */
2200 ret
= ((struct elf32_arm_link_hash_entry
*)
2201 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2205 ret
->relocs_copied
= NULL
;
2206 ret
->tls_type
= GOT_UNKNOWN
;
2207 ret
->plt_thumb_refcount
= 0;
2208 ret
->plt_got_offset
= -1;
2209 ret
->export_glue
= NULL
;
2212 return (struct bfd_hash_entry
*) ret
;
2215 /* Return true if NAME is the name of the relocation section associated
2219 reloc_section_p (struct elf32_arm_link_hash_table
*htab
,
2220 const char *name
, asection
*s
)
2223 return CONST_STRNEQ (name
, ".rel") && strcmp (s
->name
, name
+ 4) == 0;
2225 return CONST_STRNEQ (name
, ".rela") && strcmp (s
->name
, name
+ 5) == 0;
2228 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2229 shortcuts to them in our hash table. */
2232 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2234 struct elf32_arm_link_hash_table
*htab
;
2236 htab
= elf32_arm_hash_table (info
);
2237 /* BPABI objects never have a GOT, or associated sections. */
2238 if (htab
->symbian_p
)
2241 if (! _bfd_elf_create_got_section (dynobj
, info
))
2244 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
2245 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
2246 if (!htab
->sgot
|| !htab
->sgotplt
)
2249 htab
->srelgot
= bfd_make_section_with_flags (dynobj
,
2250 RELOC_SECTION (htab
, ".got"),
2251 (SEC_ALLOC
| SEC_LOAD
2254 | SEC_LINKER_CREATED
2256 if (htab
->srelgot
== NULL
2257 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
2262 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2263 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2267 elf32_arm_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
2269 struct elf32_arm_link_hash_table
*htab
;
2271 htab
= elf32_arm_hash_table (info
);
2272 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
2275 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
2278 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
2279 htab
->srelplt
= bfd_get_section_by_name (dynobj
,
2280 RELOC_SECTION (htab
, ".plt"));
2281 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
2283 htab
->srelbss
= bfd_get_section_by_name (dynobj
,
2284 RELOC_SECTION (htab
, ".bss"));
2286 if (htab
->vxworks_p
)
2288 if (!elf_vxworks_create_dynamic_sections (dynobj
, info
, &htab
->srelplt2
))
2293 htab
->plt_header_size
= 0;
2294 htab
->plt_entry_size
2295 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry
);
2299 htab
->plt_header_size
2300 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry
);
2301 htab
->plt_entry_size
2302 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry
);
2309 || (!info
->shared
&& !htab
->srelbss
))
2315 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2318 elf32_arm_copy_indirect_symbol (struct bfd_link_info
*info
,
2319 struct elf_link_hash_entry
*dir
,
2320 struct elf_link_hash_entry
*ind
)
2322 struct elf32_arm_link_hash_entry
*edir
, *eind
;
2324 edir
= (struct elf32_arm_link_hash_entry
*) dir
;
2325 eind
= (struct elf32_arm_link_hash_entry
*) ind
;
2327 if (eind
->relocs_copied
!= NULL
)
2329 if (edir
->relocs_copied
!= NULL
)
2331 struct elf32_arm_relocs_copied
**pp
;
2332 struct elf32_arm_relocs_copied
*p
;
2334 /* Add reloc counts against the indirect sym to the direct sym
2335 list. Merge any entries against the same section. */
2336 for (pp
= &eind
->relocs_copied
; (p
= *pp
) != NULL
; )
2338 struct elf32_arm_relocs_copied
*q
;
2340 for (q
= edir
->relocs_copied
; q
!= NULL
; q
= q
->next
)
2341 if (q
->section
== p
->section
)
2343 q
->pc_count
+= p
->pc_count
;
2344 q
->count
+= p
->count
;
2351 *pp
= edir
->relocs_copied
;
2354 edir
->relocs_copied
= eind
->relocs_copied
;
2355 eind
->relocs_copied
= NULL
;
2358 if (ind
->root
.type
== bfd_link_hash_indirect
)
2360 /* Copy over PLT info. */
2361 edir
->plt_thumb_refcount
+= eind
->plt_thumb_refcount
;
2362 eind
->plt_thumb_refcount
= 0;
2364 if (dir
->got
.refcount
<= 0)
2366 edir
->tls_type
= eind
->tls_type
;
2367 eind
->tls_type
= GOT_UNKNOWN
;
2371 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2374 /* Create an ARM elf linker hash table. */
2376 static struct bfd_link_hash_table
*
2377 elf32_arm_link_hash_table_create (bfd
*abfd
)
2379 struct elf32_arm_link_hash_table
*ret
;
2380 bfd_size_type amt
= sizeof (struct elf32_arm_link_hash_table
);
2382 ret
= bfd_malloc (amt
);
2386 if (!_bfd_elf_link_hash_table_init (& ret
->root
, abfd
,
2387 elf32_arm_link_hash_newfunc
,
2388 sizeof (struct elf32_arm_link_hash_entry
)))
2395 ret
->sgotplt
= NULL
;
2396 ret
->srelgot
= NULL
;
2398 ret
->srelplt
= NULL
;
2399 ret
->sdynbss
= NULL
;
2400 ret
->srelbss
= NULL
;
2401 ret
->srelplt2
= NULL
;
2402 ret
->thumb_glue_size
= 0;
2403 ret
->arm_glue_size
= 0;
2404 ret
->bfd_of_glue_owner
= NULL
;
2405 ret
->byteswap_code
= 0;
2406 ret
->target1_is_rel
= 0;
2407 ret
->target2_reloc
= R_ARM_NONE
;
2408 #ifdef FOUR_WORD_PLT
2409 ret
->plt_header_size
= 16;
2410 ret
->plt_entry_size
= 16;
2412 ret
->plt_header_size
= 20;
2413 ret
->plt_entry_size
= 12;
2420 ret
->sym_sec
.abfd
= NULL
;
2422 ret
->tls_ldm_got
.refcount
= 0;
2424 return &ret
->root
.root
;
2427 /* Locate the Thumb encoded calling stub for NAME. */
2429 static struct elf_link_hash_entry
*
2430 find_thumb_glue (struct bfd_link_info
*link_info
,
2432 char **error_message
)
2435 struct elf_link_hash_entry
*hash
;
2436 struct elf32_arm_link_hash_table
*hash_table
;
2438 /* We need a pointer to the armelf specific hash table. */
2439 hash_table
= elf32_arm_hash_table (link_info
);
2441 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2442 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2444 BFD_ASSERT (tmp_name
);
2446 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2448 hash
= elf_link_hash_lookup
2449 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2452 asprintf (error_message
, _("unable to find THUMB glue '%s' for '%s'"),
2460 /* Locate the ARM encoded calling stub for NAME. */
2462 static struct elf_link_hash_entry
*
2463 find_arm_glue (struct bfd_link_info
*link_info
,
2465 char **error_message
)
2468 struct elf_link_hash_entry
*myh
;
2469 struct elf32_arm_link_hash_table
*hash_table
;
2471 /* We need a pointer to the elfarm specific hash table. */
2472 hash_table
= elf32_arm_hash_table (link_info
);
2474 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2475 + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2477 BFD_ASSERT (tmp_name
);
2479 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2481 myh
= elf_link_hash_lookup
2482 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2485 asprintf (error_message
, _("unable to find ARM glue '%s' for '%s'"),
2493 /* ARM->Thumb glue (static images):
2497 ldr r12, __func_addr
2500 .word func @ behave as if you saw a ARM_32 reloc.
2502 (relocatable images)
2505 ldr r12, __func_offset
2512 #define ARM2THUMB_STATIC_GLUE_SIZE 12
2513 static const insn32 a2t1_ldr_insn
= 0xe59fc000;
2514 static const insn32 a2t2_bx_r12_insn
= 0xe12fff1c;
2515 static const insn32 a2t3_func_addr_insn
= 0x00000001;
2517 #define ARM2THUMB_PIC_GLUE_SIZE 16
2518 static const insn32 a2t1p_ldr_insn
= 0xe59fc004;
2519 static const insn32 a2t2p_add_pc_insn
= 0xe08cc00f;
2520 static const insn32 a2t3p_bx_r12_insn
= 0xe12fff1c;
2522 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
2526 __func_from_thumb: __func_from_thumb:
2528 nop ldr r6, __func_addr
2530 __func_change_to_arm: bx r6
2532 __func_back_to_thumb:
2538 #define THUMB2ARM_GLUE_SIZE 8
2539 static const insn16 t2a1_bx_pc_insn
= 0x4778;
2540 static const insn16 t2a2_noop_insn
= 0x46c0;
2541 static const insn32 t2a3_b_insn
= 0xea000000;
2543 #ifndef ELFARM_NABI_C_INCLUDED
2545 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info
* info
)
2549 struct elf32_arm_link_hash_table
* globals
;
2551 globals
= elf32_arm_hash_table (info
);
2553 BFD_ASSERT (globals
!= NULL
);
2555 if (globals
->arm_glue_size
!= 0)
2557 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2559 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
2560 ARM2THUMB_GLUE_SECTION_NAME
);
2562 BFD_ASSERT (s
!= NULL
);
2564 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->arm_glue_size
);
2566 BFD_ASSERT (s
->size
== globals
->arm_glue_size
);
2570 if (globals
->thumb_glue_size
!= 0)
2572 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2574 s
= bfd_get_section_by_name
2575 (globals
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2577 BFD_ASSERT (s
!= NULL
);
2579 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->thumb_glue_size
);
2581 BFD_ASSERT (s
->size
== globals
->thumb_glue_size
);
2588 /* Allocate space and symbols for calling a Thumb function from Arm mode.
2589 returns the symbol identifying teh stub. */
2590 static struct elf_link_hash_entry
*
2591 record_arm_to_thumb_glue (struct bfd_link_info
* link_info
,
2592 struct elf_link_hash_entry
* h
)
2594 const char * name
= h
->root
.root
.string
;
2597 struct elf_link_hash_entry
* myh
;
2598 struct bfd_link_hash_entry
* bh
;
2599 struct elf32_arm_link_hash_table
* globals
;
2603 globals
= elf32_arm_hash_table (link_info
);
2605 BFD_ASSERT (globals
!= NULL
);
2606 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2608 s
= bfd_get_section_by_name
2609 (globals
->bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
2611 BFD_ASSERT (s
!= NULL
);
2613 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2615 BFD_ASSERT (tmp_name
);
2617 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2619 myh
= elf_link_hash_lookup
2620 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2624 /* We've already seen this guy. */
2629 /* The only trick here is using hash_table->arm_glue_size as the value.
2630 Even though the section isn't allocated yet, this is where we will be
2633 val
= globals
->arm_glue_size
+ 1;
2634 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
2635 tmp_name
, BSF_GLOBAL
, s
, val
,
2636 NULL
, TRUE
, FALSE
, &bh
);
2638 myh
= (struct elf_link_hash_entry
*) bh
;
2639 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2640 myh
->forced_local
= 1;
2644 if ((link_info
->shared
|| globals
->root
.is_relocatable_executable
))
2645 size
= ARM2THUMB_PIC_GLUE_SIZE
;
2647 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
2650 globals
->arm_glue_size
+= size
;
2656 record_thumb_to_arm_glue (struct bfd_link_info
*link_info
,
2657 struct elf_link_hash_entry
*h
)
2659 const char *name
= h
->root
.root
.string
;
2662 struct elf_link_hash_entry
*myh
;
2663 struct bfd_link_hash_entry
*bh
;
2664 struct elf32_arm_link_hash_table
*hash_table
;
2667 hash_table
= elf32_arm_hash_table (link_info
);
2669 BFD_ASSERT (hash_table
!= NULL
);
2670 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
2672 s
= bfd_get_section_by_name
2673 (hash_table
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2675 BFD_ASSERT (s
!= NULL
);
2677 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2678 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2680 BFD_ASSERT (tmp_name
);
2682 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2684 myh
= elf_link_hash_lookup
2685 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2689 /* We've already seen this guy. */
2695 val
= hash_table
->thumb_glue_size
+ 1;
2696 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2697 tmp_name
, BSF_GLOBAL
, s
, val
,
2698 NULL
, TRUE
, FALSE
, &bh
);
2700 /* If we mark it 'Thumb', the disassembler will do a better job. */
2701 myh
= (struct elf_link_hash_entry
*) bh
;
2702 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
2703 myh
->forced_local
= 1;
2707 #define CHANGE_TO_ARM "__%s_change_to_arm"
2708 #define BACK_FROM_ARM "__%s_back_from_arm"
2710 /* Allocate another symbol to mark where we switch to Arm mode. */
2711 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2712 + strlen (CHANGE_TO_ARM
) + 1);
2714 BFD_ASSERT (tmp_name
);
2716 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
2719 val
= hash_table
->thumb_glue_size
+ 4,
2720 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2721 tmp_name
, BSF_LOCAL
, s
, val
,
2722 NULL
, TRUE
, FALSE
, &bh
);
2726 s
->size
+= THUMB2ARM_GLUE_SIZE
;
2727 hash_table
->thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
2732 /* Add the glue sections to ABFD. This function is called from the
2733 linker scripts in ld/emultempl/{armelf}.em. */
2736 bfd_elf32_arm_add_glue_sections_to_bfd (bfd
*abfd
,
2737 struct bfd_link_info
*info
)
2742 /* If we are only performing a partial
2743 link do not bother adding the glue. */
2744 if (info
->relocatable
)
2747 sec
= bfd_get_section_by_name (abfd
, ARM2THUMB_GLUE_SECTION_NAME
);
2751 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
2752 will prevent elf_link_input_bfd() from processing the contents
2754 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2755 | SEC_CODE
| SEC_READONLY
);
2757 sec
= bfd_make_section_with_flags (abfd
,
2758 ARM2THUMB_GLUE_SECTION_NAME
,
2762 || !bfd_set_section_alignment (abfd
, sec
, 2))
2765 /* Set the gc mark to prevent the section from being removed by garbage
2766 collection, despite the fact that no relocs refer to this section. */
2770 sec
= bfd_get_section_by_name (abfd
, THUMB2ARM_GLUE_SECTION_NAME
);
2774 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2775 | SEC_CODE
| SEC_READONLY
);
2777 sec
= bfd_make_section_with_flags (abfd
,
2778 THUMB2ARM_GLUE_SECTION_NAME
,
2782 || !bfd_set_section_alignment (abfd
, sec
, 2))
2791 /* Select a BFD to be used to hold the sections used by the glue code.
2792 This function is called from the linker scripts in ld/emultempl/
2796 bfd_elf32_arm_get_bfd_for_interworking (bfd
*abfd
, struct bfd_link_info
*info
)
2798 struct elf32_arm_link_hash_table
*globals
;
2800 /* If we are only performing a partial link
2801 do not bother getting a bfd to hold the glue. */
2802 if (info
->relocatable
)
2805 /* Make sure we don't attach the glue sections to a dynamic object. */
2806 BFD_ASSERT (!(abfd
->flags
& DYNAMIC
));
2808 globals
= elf32_arm_hash_table (info
);
2810 BFD_ASSERT (globals
!= NULL
);
2812 if (globals
->bfd_of_glue_owner
!= NULL
)
2815 /* Save the bfd for later use. */
2816 globals
->bfd_of_glue_owner
= abfd
;
2821 static void check_use_blx(struct elf32_arm_link_hash_table
*globals
)
2823 if (elf32_arm_get_eabi_attr_int (globals
->obfd
, Tag_CPU_arch
) > 2)
2824 globals
->use_blx
= 1;
2828 bfd_elf32_arm_process_before_allocation (bfd
*abfd
,
2829 struct bfd_link_info
*link_info
,
2832 Elf_Internal_Shdr
*symtab_hdr
;
2833 Elf_Internal_Rela
*internal_relocs
= NULL
;
2834 Elf_Internal_Rela
*irel
, *irelend
;
2835 bfd_byte
*contents
= NULL
;
2838 struct elf32_arm_link_hash_table
*globals
;
2840 /* If we are only performing a partial link do not bother
2841 to construct any glue. */
2842 if (link_info
->relocatable
)
2845 /* Here we have a bfd that is to be included on the link. We have a hook
2846 to do reloc rummaging, before section sizes are nailed down. */
2847 globals
= elf32_arm_hash_table (link_info
);
2848 check_use_blx (globals
);
2850 BFD_ASSERT (globals
!= NULL
);
2851 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2853 if (byteswap_code
&& !bfd_big_endian (abfd
))
2855 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
2859 globals
->byteswap_code
= byteswap_code
;
2861 /* Rummage around all the relocs and map the glue vectors. */
2862 sec
= abfd
->sections
;
2867 for (; sec
!= NULL
; sec
= sec
->next
)
2869 if (sec
->reloc_count
== 0)
2872 if ((sec
->flags
& SEC_EXCLUDE
) != 0)
2875 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2877 /* Load the relocs. */
2879 = _bfd_elf_link_read_relocs (abfd
, sec
, (void *) NULL
,
2880 (Elf_Internal_Rela
*) NULL
, FALSE
);
2882 if (internal_relocs
== NULL
)
2885 irelend
= internal_relocs
+ sec
->reloc_count
;
2886 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
2889 unsigned long r_index
;
2891 struct elf_link_hash_entry
*h
;
2893 r_type
= ELF32_R_TYPE (irel
->r_info
);
2894 r_index
= ELF32_R_SYM (irel
->r_info
);
2896 /* These are the only relocation types we care about. */
2897 if ( r_type
!= R_ARM_PC24
2898 && r_type
!= R_ARM_PLT32
2899 && r_type
!= R_ARM_CALL
2900 && r_type
!= R_ARM_JUMP24
2901 && r_type
!= R_ARM_THM_CALL
)
2904 /* Get the section contents if we haven't done so already. */
2905 if (contents
== NULL
)
2907 /* Get cached copy if it exists. */
2908 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
2909 contents
= elf_section_data (sec
)->this_hdr
.contents
;
2912 /* Go get them off disk. */
2913 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
2918 /* If the relocation is not against a symbol it cannot concern us. */
2921 /* We don't care about local symbols. */
2922 if (r_index
< symtab_hdr
->sh_info
)
2925 /* This is an external symbol. */
2926 r_index
-= symtab_hdr
->sh_info
;
2927 h
= (struct elf_link_hash_entry
*)
2928 elf_sym_hashes (abfd
)[r_index
];
2930 /* If the relocation is against a static symbol it must be within
2931 the current section and so cannot be a cross ARM/Thumb relocation. */
2935 /* If the call will go through a PLT entry then we do not
2936 need glue. We have to do a fairly complicated check
2937 here, since we don't determine this finally (by setting
2938 plt.offset) until later; this test should be kept in sync
2939 with elf32_arm_adjust_dynamic_symbol. */
2940 if (globals
->splt
!= NULL
2941 && h
->plt
.refcount
> 0
2942 && (h
->type
== STT_FUNC
2943 || h
->type
== STT_ARM_TFUNC
2945 && !SYMBOL_CALLS_LOCAL (link_info
, h
)
2946 && !(ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2947 && h
->root
.type
== bfd_link_hash_undefweak
))
2956 /* This one is a call from arm code. We need to look up
2957 the target of the call. If it is a thumb target, we
2959 if (ELF_ST_TYPE(h
->type
) == STT_ARM_TFUNC
2960 && !(r_type
== R_ARM_CALL
&& globals
->use_blx
))
2961 record_arm_to_thumb_glue (link_info
, h
);
2964 case R_ARM_THM_CALL
:
2965 /* This one is a call from thumb code. We look
2966 up the target of the call. If it is not a thumb
2967 target, we insert glue. */
2968 if (ELF_ST_TYPE (h
->type
) != STT_ARM_TFUNC
&& !globals
->use_blx
)
2969 record_thumb_to_arm_glue (link_info
, h
);
2977 if (contents
!= NULL
2978 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
2982 if (internal_relocs
!= NULL
2983 && elf_section_data (sec
)->relocs
!= internal_relocs
)
2984 free (internal_relocs
);
2985 internal_relocs
= NULL
;
2991 if (contents
!= NULL
2992 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
2994 if (internal_relocs
!= NULL
2995 && elf_section_data (sec
)->relocs
!= internal_relocs
)
2996 free (internal_relocs
);
3003 /* Set target relocation values needed during linking. */
3006 bfd_elf32_arm_set_target_relocs (struct bfd_link_info
*link_info
,
3008 char * target2_type
,
3012 struct elf32_arm_link_hash_table
*globals
;
3014 globals
= elf32_arm_hash_table (link_info
);
3016 globals
->target1_is_rel
= target1_is_rel
;
3017 if (strcmp (target2_type
, "rel") == 0)
3018 globals
->target2_reloc
= R_ARM_REL32
;
3019 else if (strcmp (target2_type
, "abs") == 0)
3020 globals
->target2_reloc
= R_ARM_ABS32
;
3021 else if (strcmp (target2_type
, "got-rel") == 0)
3022 globals
->target2_reloc
= R_ARM_GOT_PREL
;
3025 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
3028 globals
->fix_v4bx
= fix_v4bx
;
3029 globals
->use_blx
|= use_blx
;
3032 /* The thumb form of a long branch is a bit finicky, because the offset
3033 encoding is split over two fields, each in it's own instruction. They
3034 can occur in any order. So given a thumb form of long branch, and an
3035 offset, insert the offset into the thumb branch and return finished
3038 It takes two thumb instructions to encode the target address. Each has
3039 11 bits to invest. The upper 11 bits are stored in one (identified by
3040 H-0.. see below), the lower 11 bits are stored in the other (identified
3043 Combine together and shifted left by 1 (it's a half word address) and
3047 H-0, upper address-0 = 000
3049 H-1, lower address-0 = 800
3051 They can be ordered either way, but the arm tools I've seen always put
3052 the lower one first. It probably doesn't matter. krk@cygnus.com
3054 XXX: Actually the order does matter. The second instruction (H-1)
3055 moves the computed address into the PC, so it must be the second one
3056 in the sequence. The problem, however is that whilst little endian code
3057 stores the instructions in HI then LOW order, big endian code does the
3058 reverse. nickc@cygnus.com. */
3060 #define LOW_HI_ORDER 0xF800F000
3061 #define HI_LOW_ORDER 0xF000F800
3064 insert_thumb_branch (insn32 br_insn
, int rel_off
)
3066 unsigned int low_bits
;
3067 unsigned int high_bits
;
3069 BFD_ASSERT ((rel_off
& 1) != 1);
3071 rel_off
>>= 1; /* Half word aligned address. */
3072 low_bits
= rel_off
& 0x000007FF; /* The bottom 11 bits. */
3073 high_bits
= (rel_off
>> 11) & 0x000007FF; /* The top 11 bits. */
3075 if ((br_insn
& LOW_HI_ORDER
) == LOW_HI_ORDER
)
3076 br_insn
= LOW_HI_ORDER
| (low_bits
<< 16) | high_bits
;
3077 else if ((br_insn
& HI_LOW_ORDER
) == HI_LOW_ORDER
)
3078 br_insn
= HI_LOW_ORDER
| (high_bits
<< 16) | low_bits
;
3080 /* FIXME: abort is probably not the right call. krk@cygnus.com */
3081 abort (); /* Error - not a valid branch instruction form. */
3087 /* Store an Arm insn into an output section not processed by
3088 elf32_arm_write_section. */
3091 put_arm_insn (struct elf32_arm_link_hash_table
*htab
,
3092 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3094 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3095 bfd_putl32 (val
, ptr
);
3097 bfd_putb32 (val
, ptr
);
3101 /* Store a 16-bit Thumb insn into an output section not processed by
3102 elf32_arm_write_section. */
3105 put_thumb_insn (struct elf32_arm_link_hash_table
*htab
,
3106 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3108 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3109 bfd_putl16 (val
, ptr
);
3111 bfd_putb16 (val
, ptr
);
3115 /* Thumb code calling an ARM function. */
3118 elf32_thumb_to_arm_stub (struct bfd_link_info
* info
,
3122 asection
* input_section
,
3123 bfd_byte
* hit_data
,
3126 bfd_signed_vma addend
,
3128 char **error_message
)
3132 unsigned long int tmp
;
3133 long int ret_offset
;
3134 struct elf_link_hash_entry
* myh
;
3135 struct elf32_arm_link_hash_table
* globals
;
3137 myh
= find_thumb_glue (info
, name
, error_message
);
3141 globals
= elf32_arm_hash_table (info
);
3143 BFD_ASSERT (globals
!= NULL
);
3144 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3146 my_offset
= myh
->root
.u
.def
.value
;
3148 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
3149 THUMB2ARM_GLUE_SECTION_NAME
);
3151 BFD_ASSERT (s
!= NULL
);
3152 BFD_ASSERT (s
->contents
!= NULL
);
3153 BFD_ASSERT (s
->output_section
!= NULL
);
3155 if ((my_offset
& 0x01) == 0x01)
3158 && sym_sec
->owner
!= NULL
3159 && !INTERWORK_FLAG (sym_sec
->owner
))
3161 (*_bfd_error_handler
)
3162 (_("%B(%s): warning: interworking not enabled.\n"
3163 " first occurrence: %B: thumb call to arm"),
3164 sym_sec
->owner
, input_bfd
, name
);
3170 myh
->root
.u
.def
.value
= my_offset
;
3172 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a1_bx_pc_insn
,
3173 s
->contents
+ my_offset
);
3175 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a2_noop_insn
,
3176 s
->contents
+ my_offset
+ 2);
3179 /* Address of destination of the stub. */
3180 ((bfd_signed_vma
) val
)
3182 /* Offset from the start of the current section
3183 to the start of the stubs. */
3185 /* Offset of the start of this stub from the start of the stubs. */
3187 /* Address of the start of the current section. */
3188 + s
->output_section
->vma
)
3189 /* The branch instruction is 4 bytes into the stub. */
3191 /* ARM branches work from the pc of the instruction + 8. */
3194 put_arm_insn (globals
, output_bfd
,
3195 (bfd_vma
) t2a3_b_insn
| ((ret_offset
>> 2) & 0x00FFFFFF),
3196 s
->contents
+ my_offset
+ 4);
3199 BFD_ASSERT (my_offset
<= globals
->thumb_glue_size
);
3201 /* Now go back and fix up the original BL insn to point to here. */
3203 /* Address of where the stub is located. */
3204 (s
->output_section
->vma
+ s
->output_offset
+ my_offset
)
3205 /* Address of where the BL is located. */
3206 - (input_section
->output_section
->vma
+ input_section
->output_offset
3208 /* Addend in the relocation. */
3210 /* Biassing for PC-relative addressing. */
3213 tmp
= bfd_get_32 (input_bfd
, hit_data
3214 - input_section
->vma
);
3216 bfd_put_32 (output_bfd
,
3217 (bfd_vma
) insert_thumb_branch (tmp
, ret_offset
),
3218 hit_data
- input_section
->vma
);
3223 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
3225 static struct elf_link_hash_entry
*
3226 elf32_arm_create_thumb_stub (struct bfd_link_info
* info
,
3233 char **error_message
)
3236 long int ret_offset
;
3237 struct elf_link_hash_entry
* myh
;
3238 struct elf32_arm_link_hash_table
* globals
;
3240 myh
= find_arm_glue (info
, name
, error_message
);
3244 globals
= elf32_arm_hash_table (info
);
3246 BFD_ASSERT (globals
!= NULL
);
3247 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3249 my_offset
= myh
->root
.u
.def
.value
;
3251 if ((my_offset
& 0x01) == 0x01)
3254 && sym_sec
->owner
!= NULL
3255 && !INTERWORK_FLAG (sym_sec
->owner
))
3257 (*_bfd_error_handler
)
3258 (_("%B(%s): warning: interworking not enabled.\n"
3259 " first occurrence: %B: arm call to thumb"),
3260 sym_sec
->owner
, input_bfd
, name
);
3264 myh
->root
.u
.def
.value
= my_offset
;
3266 if ((info
->shared
|| globals
->root
.is_relocatable_executable
))
3268 /* For relocatable objects we can't use absolute addresses,
3269 so construct the address from a relative offset. */
3270 /* TODO: If the offset is small it's probably worth
3271 constructing the address with adds. */
3272 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1p_ldr_insn
,
3273 s
->contents
+ my_offset
);
3274 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2p_add_pc_insn
,
3275 s
->contents
+ my_offset
+ 4);
3276 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t3p_bx_r12_insn
,
3277 s
->contents
+ my_offset
+ 8);
3278 /* Adjust the offset by 4 for the position of the add,
3279 and 8 for the pipeline offset. */
3280 ret_offset
= (val
- (s
->output_offset
3281 + s
->output_section
->vma
3284 bfd_put_32 (output_bfd
, ret_offset
,
3285 s
->contents
+ my_offset
+ 12);
3289 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1_ldr_insn
,
3290 s
->contents
+ my_offset
);
3292 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2_bx_r12_insn
,
3293 s
->contents
+ my_offset
+ 4);
3295 /* It's a thumb address. Add the low order bit. */
3296 bfd_put_32 (output_bfd
, val
| a2t3_func_addr_insn
,
3297 s
->contents
+ my_offset
+ 8);
3301 BFD_ASSERT (my_offset
<= globals
->arm_glue_size
);
3306 /* Arm code calling a Thumb function. */
3309 elf32_arm_to_thumb_stub (struct bfd_link_info
* info
,
3313 asection
* input_section
,
3314 bfd_byte
* hit_data
,
3317 bfd_signed_vma addend
,
3319 char **error_message
)
3321 unsigned long int tmp
;
3324 long int ret_offset
;
3325 struct elf_link_hash_entry
* myh
;
3326 struct elf32_arm_link_hash_table
* globals
;
3328 globals
= elf32_arm_hash_table (info
);
3330 BFD_ASSERT (globals
!= NULL
);
3331 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3333 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
3334 ARM2THUMB_GLUE_SECTION_NAME
);
3335 BFD_ASSERT (s
!= NULL
);
3336 BFD_ASSERT (s
->contents
!= NULL
);
3337 BFD_ASSERT (s
->output_section
!= NULL
);
3339 myh
= elf32_arm_create_thumb_stub (info
, name
, input_bfd
, output_bfd
,
3340 sym_sec
, val
, s
, error_message
);
3344 my_offset
= myh
->root
.u
.def
.value
;
3345 tmp
= bfd_get_32 (input_bfd
, hit_data
);
3346 tmp
= tmp
& 0xFF000000;
3348 /* Somehow these are both 4 too far, so subtract 8. */
3349 ret_offset
= (s
->output_offset
3351 + s
->output_section
->vma
3352 - (input_section
->output_offset
3353 + input_section
->output_section
->vma
3357 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
3359 bfd_put_32 (output_bfd
, (bfd_vma
) tmp
, hit_data
- input_section
->vma
);
3364 /* Populate Arm stub for an exported Thumb function. */
3367 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry
*h
, void * inf
)
3369 struct bfd_link_info
* info
= (struct bfd_link_info
*) inf
;
3371 struct elf_link_hash_entry
* myh
;
3372 struct elf32_arm_link_hash_entry
*eh
;
3373 struct elf32_arm_link_hash_table
* globals
;
3376 char *error_message
;
3378 eh
= elf32_arm_hash_entry(h
);
3379 /* Allocate stubs for exported Thumb functions on v4t. */
3380 if (eh
->export_glue
== NULL
)
3383 globals
= elf32_arm_hash_table (info
);
3385 BFD_ASSERT (globals
!= NULL
);
3386 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3388 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
3389 ARM2THUMB_GLUE_SECTION_NAME
);
3390 BFD_ASSERT (s
!= NULL
);
3391 BFD_ASSERT (s
->contents
!= NULL
);
3392 BFD_ASSERT (s
->output_section
!= NULL
);
3394 sec
= eh
->export_glue
->root
.u
.def
.section
;
3395 val
= eh
->export_glue
->root
.u
.def
.value
+ sec
->output_offset
3396 + sec
->output_section
->vma
;
3397 myh
= elf32_arm_create_thumb_stub (info
, h
->root
.root
.string
,
3398 h
->root
.u
.def
.section
->owner
,
3399 globals
->obfd
, sec
, val
, s
,
3405 /* Generate Arm stubs for exported Thumb symbols. */
3407 elf32_arm_begin_write_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
3408 struct bfd_link_info
*link_info
)
3410 struct elf32_arm_link_hash_table
* globals
;
3415 globals
= elf32_arm_hash_table (link_info
);
3416 /* If blx is available then exported Thumb symbols are OK and there is
3418 if (globals
->use_blx
)
3421 elf_link_hash_traverse (&globals
->root
, elf32_arm_to_thumb_export_stub
,
3425 /* Some relocations map to different relocations depending on the
3426 target. Return the real relocation. */
3428 arm_real_reloc_type (struct elf32_arm_link_hash_table
* globals
,
3434 if (globals
->target1_is_rel
)
3440 return globals
->target2_reloc
;
3447 /* Return the base VMA address which should be subtracted from real addresses
3448 when resolving @dtpoff relocation.
3449 This is PT_TLS segment p_vaddr. */
3452 dtpoff_base (struct bfd_link_info
*info
)
3454 /* If tls_sec is NULL, we should have signalled an error already. */
3455 if (elf_hash_table (info
)->tls_sec
== NULL
)
3457 return elf_hash_table (info
)->tls_sec
->vma
;
3460 /* Return the relocation value for @tpoff relocation
3461 if STT_TLS virtual address is ADDRESS. */
3464 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
3466 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
3469 /* If tls_sec is NULL, we should have signalled an error already. */
3470 if (htab
->tls_sec
== NULL
)
3472 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
3473 return address
- htab
->tls_sec
->vma
+ base
;
3476 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
3477 VALUE is the relocation value. */
3479 static bfd_reloc_status_type
3480 elf32_arm_abs12_reloc (bfd
*abfd
, void *data
, bfd_vma value
)
3483 return bfd_reloc_overflow
;
3485 value
|= bfd_get_32 (abfd
, data
) & 0xfffff000;
3486 bfd_put_32 (abfd
, value
, data
);
3487 return bfd_reloc_ok
;
3490 /* For a given value of n, calculate the value of G_n as required to
3491 deal with group relocations. We return it in the form of an
3492 encoded constant-and-rotation, together with the final residual. If n is
3493 specified as less than zero, then final_residual is filled with the
3494 input value and no further action is performed. */
3497 calculate_group_reloc_mask (bfd_vma value
, int n
, bfd_vma
*final_residual
)
3501 bfd_vma encoded_g_n
= 0;
3502 bfd_vma residual
= value
; /* Also known as Y_n. */
3504 for (current_n
= 0; current_n
<= n
; current_n
++)
3508 /* Calculate which part of the value to mask. */
3515 /* Determine the most significant bit in the residual and
3516 align the resulting value to a 2-bit boundary. */
3517 for (msb
= 30; msb
>= 0; msb
-= 2)
3518 if (residual
& (3 << msb
))
3521 /* The desired shift is now (msb - 6), or zero, whichever
3528 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
3529 g_n
= residual
& (0xff << shift
);
3530 encoded_g_n
= (g_n
>> shift
)
3531 | ((g_n
<= 0xff ? 0 : (32 - shift
) / 2) << 8);
3533 /* Calculate the residual for the next time around. */
3537 *final_residual
= residual
;
3542 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
3543 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
3545 identify_add_or_sub(bfd_vma insn
)
3547 int opcode
= insn
& 0x1e00000;
3549 if (opcode
== 1 << 23) /* ADD */
3552 if (opcode
== 1 << 22) /* SUB */
3558 /* Determine if we're dealing with a Thumb-2 object. */
3560 static int using_thumb2 (struct elf32_arm_link_hash_table
*globals
)
3562 int arch
= elf32_arm_get_eabi_attr_int (globals
->obfd
, Tag_CPU_arch
);
3563 return arch
== TAG_CPU_ARCH_V6T2
|| arch
>= TAG_CPU_ARCH_V7
;
3566 /* Perform a relocation as part of a final link. */
3568 static bfd_reloc_status_type
3569 elf32_arm_final_link_relocate (reloc_howto_type
* howto
,
3572 asection
* input_section
,
3573 bfd_byte
* contents
,
3574 Elf_Internal_Rela
* rel
,
3576 struct bfd_link_info
* info
,
3578 const char * sym_name
,
3580 struct elf_link_hash_entry
* h
,
3581 bfd_boolean
* unresolved_reloc_p
,
3582 char **error_message
)
3584 unsigned long r_type
= howto
->type
;
3585 unsigned long r_symndx
;
3586 bfd_byte
* hit_data
= contents
+ rel
->r_offset
;
3587 bfd
* dynobj
= NULL
;
3588 Elf_Internal_Shdr
* symtab_hdr
;
3589 struct elf_link_hash_entry
** sym_hashes
;
3590 bfd_vma
* local_got_offsets
;
3591 asection
* sgot
= NULL
;
3592 asection
* splt
= NULL
;
3593 asection
* sreloc
= NULL
;
3595 bfd_signed_vma signed_addend
;
3596 struct elf32_arm_link_hash_table
* globals
;
3598 globals
= elf32_arm_hash_table (info
);
3600 /* Some relocation type map to different relocations depending on the
3601 target. We pick the right one here. */
3602 r_type
= arm_real_reloc_type (globals
, r_type
);
3603 if (r_type
!= howto
->type
)
3604 howto
= elf32_arm_howto_from_type (r_type
);
3606 /* If the start address has been set, then set the EF_ARM_HASENTRY
3607 flag. Setting this more than once is redundant, but the cost is
3608 not too high, and it keeps the code simple.
3610 The test is done here, rather than somewhere else, because the
3611 start address is only set just before the final link commences.
3613 Note - if the user deliberately sets a start address of 0, the
3614 flag will not be set. */
3615 if (bfd_get_start_address (output_bfd
) != 0)
3616 elf_elfheader (output_bfd
)->e_flags
|= EF_ARM_HASENTRY
;
3618 dynobj
= elf_hash_table (info
)->dynobj
;
3621 sgot
= bfd_get_section_by_name (dynobj
, ".got");
3622 splt
= bfd_get_section_by_name (dynobj
, ".plt");
3624 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
3625 sym_hashes
= elf_sym_hashes (input_bfd
);
3626 local_got_offsets
= elf_local_got_offsets (input_bfd
);
3627 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3629 if (globals
->use_rel
)
3631 addend
= bfd_get_32 (input_bfd
, hit_data
) & howto
->src_mask
;
3633 if (addend
& ((howto
->src_mask
+ 1) >> 1))
3636 signed_addend
&= ~ howto
->src_mask
;
3637 signed_addend
|= addend
;
3640 signed_addend
= addend
;
3643 addend
= signed_addend
= rel
->r_addend
;
3648 /* We don't need to find a value for this symbol. It's just a
3650 *unresolved_reloc_p
= FALSE
;
3651 return bfd_reloc_ok
;
3654 if (!globals
->vxworks_p
)
3655 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
3659 case R_ARM_ABS32_NOI
:
3661 case R_ARM_REL32_NOI
:
3667 /* r_symndx will be zero only for relocs against symbols
3668 from removed linkonce sections, or sections discarded by
3672 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
3673 return bfd_reloc_ok
;
3676 /* Handle relocations which should use the PLT entry. ABS32/REL32
3677 will use the symbol's value, which may point to a PLT entry, but we
3678 don't need to handle that here. If we created a PLT entry, all
3679 branches in this object should go to it. */
3680 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
3681 && r_type
!= R_ARM_ABS32_NOI
&& r_type
!= R_ARM_REL32_NOI
)
3684 && h
->plt
.offset
!= (bfd_vma
) -1)
3686 /* If we've created a .plt section, and assigned a PLT entry to
3687 this function, it should not be known to bind locally. If
3688 it were, we would have cleared the PLT entry. */
3689 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
3691 value
= (splt
->output_section
->vma
3692 + splt
->output_offset
3694 *unresolved_reloc_p
= FALSE
;
3695 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3696 contents
, rel
->r_offset
, value
,
3700 /* When generating a shared object or relocatable executable, these
3701 relocations are copied into the output file to be resolved at
3703 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
3704 && (input_section
->flags
& SEC_ALLOC
)
3705 && ((r_type
!= R_ARM_REL32
&& r_type
!= R_ARM_REL32_NOI
)
3706 || !SYMBOL_CALLS_LOCAL (info
, h
))
3708 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
3709 || h
->root
.type
!= bfd_link_hash_undefweak
)
3710 && r_type
!= R_ARM_PC24
3711 && r_type
!= R_ARM_CALL
3712 && r_type
!= R_ARM_JUMP24
3713 && r_type
!= R_ARM_PREL31
3714 && r_type
!= R_ARM_PLT32
)
3716 Elf_Internal_Rela outrel
;
3718 bfd_boolean skip
, relocate
;
3720 *unresolved_reloc_p
= FALSE
;
3726 name
= (bfd_elf_string_from_elf_section
3728 elf_elfheader (input_bfd
)->e_shstrndx
,
3729 elf_section_data (input_section
)->rel_hdr
.sh_name
));
3731 return bfd_reloc_notsupported
;
3733 BFD_ASSERT (reloc_section_p (globals
, name
, input_section
));
3735 sreloc
= bfd_get_section_by_name (dynobj
, name
);
3736 BFD_ASSERT (sreloc
!= NULL
);
3742 outrel
.r_addend
= addend
;
3744 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3746 if (outrel
.r_offset
== (bfd_vma
) -1)
3748 else if (outrel
.r_offset
== (bfd_vma
) -2)
3749 skip
= TRUE
, relocate
= TRUE
;
3750 outrel
.r_offset
+= (input_section
->output_section
->vma
3751 + input_section
->output_offset
);
3754 memset (&outrel
, 0, sizeof outrel
);
3759 || !h
->def_regular
))
3760 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
3765 /* This symbol is local, or marked to become local. */
3766 if (sym_flags
== STT_ARM_TFUNC
)
3768 if (globals
->symbian_p
)
3772 /* On Symbian OS, the data segment and text segement
3773 can be relocated independently. Therefore, we
3774 must indicate the segment to which this
3775 relocation is relative. The BPABI allows us to
3776 use any symbol in the right segment; we just use
3777 the section symbol as it is convenient. (We
3778 cannot use the symbol given by "h" directly as it
3779 will not appear in the dynamic symbol table.)
3781 Note that the dynamic linker ignores the section
3782 symbol value, so we don't subtract osec->vma
3783 from the emitted reloc addend. */
3785 osec
= sym_sec
->output_section
;
3787 osec
= input_section
->output_section
;
3788 symbol
= elf_section_data (osec
)->dynindx
;
3791 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
3793 if ((osec
->flags
& SEC_READONLY
) == 0
3794 && htab
->data_index_section
!= NULL
)
3795 osec
= htab
->data_index_section
;
3797 osec
= htab
->text_index_section
;
3798 symbol
= elf_section_data (osec
)->dynindx
;
3800 BFD_ASSERT (symbol
!= 0);
3803 /* On SVR4-ish systems, the dynamic loader cannot
3804 relocate the text and data segments independently,
3805 so the symbol does not matter. */
3807 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
3808 if (globals
->use_rel
)
3811 outrel
.r_addend
+= value
;
3814 loc
= sreloc
->contents
;
3815 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
3816 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
3818 /* If this reloc is against an external symbol, we do not want to
3819 fiddle with the addend. Otherwise, we need to include the symbol
3820 value so that it becomes an addend for the dynamic reloc. */
3822 return bfd_reloc_ok
;
3824 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3825 contents
, rel
->r_offset
, value
,
3828 else switch (r_type
)
3831 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
3833 case R_ARM_XPC25
: /* Arm BLX instruction. */
3836 case R_ARM_PC24
: /* Arm B/BL instruction */
3838 if (r_type
== R_ARM_XPC25
)
3840 /* Check for Arm calling Arm function. */
3841 /* FIXME: Should we translate the instruction into a BL
3842 instruction instead ? */
3843 if (sym_flags
!= STT_ARM_TFUNC
)
3844 (*_bfd_error_handler
)
3845 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
3847 h
? h
->root
.root
.string
: "(local)");
3849 else if (r_type
!= R_ARM_CALL
|| !globals
->use_blx
)
3851 /* Check for Arm calling Thumb function. */
3852 if (sym_flags
== STT_ARM_TFUNC
)
3854 if (elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
3855 output_bfd
, input_section
,
3856 hit_data
, sym_sec
, rel
->r_offset
,
3857 signed_addend
, value
,
3859 return bfd_reloc_ok
;
3861 return bfd_reloc_dangerous
;
3865 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
3867 S is the address of the symbol in the relocation.
3868 P is address of the instruction being relocated.
3869 A is the addend (extracted from the instruction) in bytes.
3871 S is held in 'value'.
3872 P is the base address of the section containing the
3873 instruction plus the offset of the reloc into that
3875 (input_section->output_section->vma +
3876 input_section->output_offset +
3878 A is the addend, converted into bytes, ie:
3881 Note: None of these operations have knowledge of the pipeline
3882 size of the processor, thus it is up to the assembler to
3883 encode this information into the addend. */
3884 value
-= (input_section
->output_section
->vma
3885 + input_section
->output_offset
);
3886 value
-= rel
->r_offset
;
3887 if (globals
->use_rel
)
3888 value
+= (signed_addend
<< howto
->size
);
3890 /* RELA addends do not have to be adjusted by howto->size. */
3891 value
+= signed_addend
;
3893 signed_addend
= value
;
3894 signed_addend
>>= howto
->rightshift
;
3896 /* It is not an error for an undefined weak reference to be
3897 out of range. Any program that branches to such a symbol
3898 is going to crash anyway, so there is no point worrying
3899 about getting the destination exactly right. */
3900 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3902 /* Perform a signed range check. */
3903 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
3904 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
3905 return bfd_reloc_overflow
;
3908 addend
= (value
& 2);
3910 value
= (signed_addend
& howto
->dst_mask
)
3911 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
3913 /* Set the H bit in the BLX instruction. */
3914 if (sym_flags
== STT_ARM_TFUNC
)
3919 value
&= ~(bfd_vma
)(1 << 24);
3921 if (r_type
== R_ARM_CALL
)
3923 /* Select the correct instruction (BL or BLX). */
3924 if (sym_flags
== STT_ARM_TFUNC
)
3928 value
&= ~(bfd_vma
)(1 << 28);
3936 if (sym_flags
== STT_ARM_TFUNC
)
3940 case R_ARM_ABS32_NOI
:
3946 if (sym_flags
== STT_ARM_TFUNC
)
3948 value
-= (input_section
->output_section
->vma
3949 + input_section
->output_offset
+ rel
->r_offset
);
3952 case R_ARM_REL32_NOI
:
3954 value
-= (input_section
->output_section
->vma
3955 + input_section
->output_offset
+ rel
->r_offset
);
3959 value
-= (input_section
->output_section
->vma
3960 + input_section
->output_offset
+ rel
->r_offset
);
3961 value
+= signed_addend
;
3962 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3964 /* Check for overflow */
3965 if ((value
^ (value
>> 1)) & (1 << 30))
3966 return bfd_reloc_overflow
;
3968 value
&= 0x7fffffff;
3969 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
3970 if (sym_flags
== STT_ARM_TFUNC
)
3975 bfd_put_32 (input_bfd
, value
, hit_data
);
3976 return bfd_reloc_ok
;
3980 if ((long) value
> 0x7f || (long) value
< -0x80)
3981 return bfd_reloc_overflow
;
3983 bfd_put_8 (input_bfd
, value
, hit_data
);
3984 return bfd_reloc_ok
;
3989 if ((long) value
> 0x7fff || (long) value
< -0x8000)
3990 return bfd_reloc_overflow
;
3992 bfd_put_16 (input_bfd
, value
, hit_data
);
3993 return bfd_reloc_ok
;
3995 case R_ARM_THM_ABS5
:
3996 /* Support ldr and str instructions for the thumb. */
3997 if (globals
->use_rel
)
3999 /* Need to refetch addend. */
4000 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
4001 /* ??? Need to determine shift amount from operand size. */
4002 addend
>>= howto
->rightshift
;
4006 /* ??? Isn't value unsigned? */
4007 if ((long) value
> 0x1f || (long) value
< -0x10)
4008 return bfd_reloc_overflow
;
4010 /* ??? Value needs to be properly shifted into place first. */
4011 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
4012 bfd_put_16 (input_bfd
, value
, hit_data
);
4013 return bfd_reloc_ok
;
4015 case R_ARM_THM_ALU_PREL_11_0
:
4016 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
4019 bfd_signed_vma relocation
;
4021 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
4022 | bfd_get_16 (input_bfd
, hit_data
+ 2);
4024 if (globals
->use_rel
)
4026 signed_addend
= (insn
& 0xff) | ((insn
& 0x7000) >> 4)
4027 | ((insn
& (1 << 26)) >> 15);
4028 if (insn
& 0xf00000)
4029 signed_addend
= -signed_addend
;
4032 relocation
= value
+ signed_addend
;
4033 relocation
-= (input_section
->output_section
->vma
4034 + input_section
->output_offset
4037 value
= abs (relocation
);
4039 if (value
>= 0x1000)
4040 return bfd_reloc_overflow
;
4042 insn
= (insn
& 0xfb0f8f00) | (value
& 0xff)
4043 | ((value
& 0x700) << 4)
4044 | ((value
& 0x800) << 15);
4048 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4049 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4051 return bfd_reloc_ok
;
4054 case R_ARM_THM_PC12
:
4055 /* Corresponds to: ldr.w reg, [pc, #offset]. */
4058 bfd_signed_vma relocation
;
4060 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
4061 | bfd_get_16 (input_bfd
, hit_data
+ 2);
4063 if (globals
->use_rel
)
4065 signed_addend
= insn
& 0xfff;
4066 if (!(insn
& (1 << 23)))
4067 signed_addend
= -signed_addend
;
4070 relocation
= value
+ signed_addend
;
4071 relocation
-= (input_section
->output_section
->vma
4072 + input_section
->output_offset
4075 value
= abs (relocation
);
4077 if (value
>= 0x1000)
4078 return bfd_reloc_overflow
;
4080 insn
= (insn
& 0xff7ff000) | value
;
4081 if (relocation
>= 0)
4084 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4085 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4087 return bfd_reloc_ok
;
4090 case R_ARM_THM_XPC22
:
4091 case R_ARM_THM_CALL
:
4092 /* Thumb BL (branch long instruction). */
4096 bfd_boolean overflow
= FALSE
;
4097 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
4098 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
4099 bfd_signed_vma reloc_signed_max
;
4100 bfd_signed_vma reloc_signed_min
;
4102 bfd_signed_vma signed_check
;
4104 int thumb2
= using_thumb2 (globals
);
4106 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
4107 with Thumb-1) involving the J1 and J2 bits. */
4108 if (globals
->use_rel
)
4110 bfd_vma s
= (upper_insn
& (1 << 10)) >> 10;
4111 bfd_vma upper
= upper_insn
& 0x3ff;
4112 bfd_vma lower
= lower_insn
& 0x7ff;
4113 bfd_vma j1
= (lower_insn
& (1 << 13)) >> 13;
4114 bfd_vma j2
= (lower_insn
& (1 << 11)) >> 11;
4115 bfd_vma i1
= j1
^ s
? 0 : 1;
4116 bfd_vma i2
= j2
^ s
? 0 : 1;
4118 addend
= (i1
<< 23) | (i2
<< 22) | (upper
<< 12) | (lower
<< 1);
4120 addend
= (addend
| ((s
? 0 : 1) << 24)) - (1 << 24);
4122 signed_addend
= addend
;
4125 if (r_type
== R_ARM_THM_XPC22
)
4127 /* Check for Thumb to Thumb call. */
4128 /* FIXME: Should we translate the instruction into a BL
4129 instruction instead ? */
4130 if (sym_flags
== STT_ARM_TFUNC
)
4131 (*_bfd_error_handler
)
4132 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
4134 h
? h
->root
.root
.string
: "(local)");
4138 /* If it is not a call to Thumb, assume call to Arm.
4139 If it is a call relative to a section name, then it is not a
4140 function call at all, but rather a long jump. Calls through
4141 the PLT do not require stubs. */
4142 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
4143 && (h
== NULL
|| splt
== NULL
4144 || h
->plt
.offset
== (bfd_vma
) -1))
4146 if (globals
->use_blx
)
4148 /* Convert BL to BLX. */
4149 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
4151 else if (elf32_thumb_to_arm_stub
4152 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
4153 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
,
4155 return bfd_reloc_ok
;
4157 return bfd_reloc_dangerous
;
4159 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
)
4161 /* Make sure this is a BL. */
4162 lower_insn
|= 0x1800;
4166 /* Handle calls via the PLT. */
4167 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
4169 value
= (splt
->output_section
->vma
4170 + splt
->output_offset
4172 if (globals
->use_blx
)
4174 /* If the Thumb BLX instruction is available, convert the
4175 BL to a BLX instruction to call the ARM-mode PLT entry. */
4176 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
4179 /* Target the Thumb stub before the ARM PLT entry. */
4180 value
-= PLT_THUMB_STUB_SIZE
;
4181 *unresolved_reloc_p
= FALSE
;
4184 relocation
= value
+ signed_addend
;
4186 relocation
-= (input_section
->output_section
->vma
4187 + input_section
->output_offset
4190 check
= relocation
>> howto
->rightshift
;
4192 /* If this is a signed value, the rightshift just dropped
4193 leading 1 bits (assuming twos complement). */
4194 if ((bfd_signed_vma
) relocation
>= 0)
4195 signed_check
= check
;
4197 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
4199 /* Calculate the permissable maximum and minimum values for
4200 this relocation according to whether we're relocating for
4202 bitsize
= howto
->bitsize
;
4205 reloc_signed_max
= ((1 << (bitsize
- 1)) - 1) >> howto
->rightshift
;
4206 reloc_signed_min
= ~reloc_signed_max
;
4208 /* Assumes two's complement. */
4209 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4212 if ((lower_insn
& 0x1800) == 0x0800)
4213 /* For a BLX instruction, make sure that the relocation is rounded up
4214 to a word boundary. This follows the semantics of the instruction
4215 which specifies that bit 1 of the target address will come from bit
4216 1 of the base address. */
4217 relocation
= (relocation
+ 2) & ~ 3;
4219 /* Put RELOCATION back into the insn. Assumes two's complement.
4220 We use the Thumb-2 encoding, which is safe even if dealing with
4221 a Thumb-1 instruction by virtue of our overflow check above. */
4222 reloc_sign
= (signed_check
< 0) ? 1 : 0;
4223 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff)
4224 | ((relocation
>> 12) & 0x3ff)
4225 | (reloc_sign
<< 10);
4226 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x2fff)
4227 | (((!((relocation
>> 23) & 1)) ^ reloc_sign
) << 13)
4228 | (((!((relocation
>> 22) & 1)) ^ reloc_sign
) << 11)
4229 | ((relocation
>> 1) & 0x7ff);
4231 /* Put the relocated value back in the object file: */
4232 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
4233 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
4235 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
4239 case R_ARM_THM_JUMP24
:
4240 /* Thumb32 unconditional branch instruction. */
4243 bfd_boolean overflow
= FALSE
;
4244 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
4245 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
4246 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
4247 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
4249 bfd_signed_vma signed_check
;
4251 /* Need to refetch the addend, reconstruct the top three bits, and glue the
4252 two pieces together. */
4253 if (globals
->use_rel
)
4255 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
4256 bfd_vma hi
= (upper_insn
& 0x03ff);
4257 bfd_vma I1
= (lower_insn
& 0x2000) >> 13;
4258 bfd_vma I2
= (lower_insn
& 0x0800) >> 11;
4259 bfd_vma lo
= (lower_insn
& 0x07ff);
4265 signed_addend
= (S
<< 24) | (I1
<< 23) | (I2
<< 22) | (hi
<< 12) | (lo
<< 1);
4266 signed_addend
-= (1 << 24); /* Sign extend. */
4269 /* ??? Should handle interworking? GCC might someday try to
4270 use this for tail calls. */
4272 relocation
= value
+ signed_addend
;
4273 relocation
-= (input_section
->output_section
->vma
4274 + input_section
->output_offset
4277 check
= relocation
>> howto
->rightshift
;
4279 /* If this is a signed value, the rightshift just dropped
4280 leading 1 bits (assuming twos complement). */
4281 if ((bfd_signed_vma
) relocation
>= 0)
4282 signed_check
= check
;
4284 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
4286 /* Assumes two's complement. */
4287 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4290 /* Put RELOCATION back into the insn. */
4292 bfd_vma S
= (relocation
& 0x01000000) >> 24;
4293 bfd_vma I1
= (relocation
& 0x00800000) >> 23;
4294 bfd_vma I2
= (relocation
& 0x00400000) >> 22;
4295 bfd_vma hi
= (relocation
& 0x003ff000) >> 12;
4296 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
4301 upper_insn
= (upper_insn
& (bfd_vma
) 0xf800) | (S
<< 10) | hi
;
4302 lower_insn
= (lower_insn
& (bfd_vma
) 0xd000) | (I1
<< 13) | (I2
<< 11) | lo
;
4305 /* Put the relocated value back in the object file: */
4306 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
4307 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
4309 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
4312 case R_ARM_THM_JUMP19
:
4313 /* Thumb32 conditional branch instruction. */
4316 bfd_boolean overflow
= FALSE
;
4317 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
4318 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
4319 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
4320 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
4322 bfd_signed_vma signed_check
;
4324 /* Need to refetch the addend, reconstruct the top three bits,
4325 and squish the two 11 bit pieces together. */
4326 if (globals
->use_rel
)
4328 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
4329 bfd_vma upper
= (upper_insn
& 0x001f);
4330 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
4331 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
4332 bfd_vma lower
= (lower_insn
& 0x07ff);
4337 upper
-= 0x0100; /* Sign extend. */
4339 addend
= (upper
<< 12) | (lower
<< 1);
4340 signed_addend
= addend
;
4343 /* ??? Should handle interworking? GCC might someday try to
4344 use this for tail calls. */
4346 relocation
= value
+ signed_addend
;
4347 relocation
-= (input_section
->output_section
->vma
4348 + input_section
->output_offset
4351 check
= relocation
>> howto
->rightshift
;
4353 /* If this is a signed value, the rightshift just dropped
4354 leading 1 bits (assuming twos complement). */
4355 if ((bfd_signed_vma
) relocation
>= 0)
4356 signed_check
= check
;
4358 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
4360 /* Assumes two's complement. */
4361 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4364 /* Put RELOCATION back into the insn. */
4366 bfd_vma S
= (relocation
& 0x00100000) >> 20;
4367 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
4368 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
4369 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
4370 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
4372 upper_insn
= (upper_insn
& 0xfb30) | (S
<< 10) | hi
;
4373 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
4376 /* Put the relocated value back in the object file: */
4377 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
4378 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
4380 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
4383 case R_ARM_THM_JUMP11
:
4384 case R_ARM_THM_JUMP8
:
4385 case R_ARM_THM_JUMP6
:
4386 /* Thumb B (branch) instruction). */
4388 bfd_signed_vma relocation
;
4389 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
4390 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
4391 bfd_signed_vma signed_check
;
4393 /* CZB cannot jump backward. */
4394 if (r_type
== R_ARM_THM_JUMP6
)
4395 reloc_signed_min
= 0;
4397 if (globals
->use_rel
)
4399 /* Need to refetch addend. */
4400 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
4401 if (addend
& ((howto
->src_mask
+ 1) >> 1))
4404 signed_addend
&= ~ howto
->src_mask
;
4405 signed_addend
|= addend
;
4408 signed_addend
= addend
;
4409 /* The value in the insn has been right shifted. We need to
4410 undo this, so that we can perform the address calculation
4411 in terms of bytes. */
4412 signed_addend
<<= howto
->rightshift
;
4414 relocation
= value
+ signed_addend
;
4416 relocation
-= (input_section
->output_section
->vma
4417 + input_section
->output_offset
4420 relocation
>>= howto
->rightshift
;
4421 signed_check
= relocation
;
4423 if (r_type
== R_ARM_THM_JUMP6
)
4424 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
4426 relocation
&= howto
->dst_mask
;
4427 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
4429 bfd_put_16 (input_bfd
, relocation
, hit_data
);
4431 /* Assumes two's complement. */
4432 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
4433 return bfd_reloc_overflow
;
4435 return bfd_reloc_ok
;
4438 case R_ARM_ALU_PCREL7_0
:
4439 case R_ARM_ALU_PCREL15_8
:
4440 case R_ARM_ALU_PCREL23_15
:
4445 insn
= bfd_get_32 (input_bfd
, hit_data
);
4446 if (globals
->use_rel
)
4448 /* Extract the addend. */
4449 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
4450 signed_addend
= addend
;
4452 relocation
= value
+ signed_addend
;
4454 relocation
-= (input_section
->output_section
->vma
4455 + input_section
->output_offset
4457 insn
= (insn
& ~0xfff)
4458 | ((howto
->bitpos
<< 7) & 0xf00)
4459 | ((relocation
>> howto
->bitpos
) & 0xff);
4460 bfd_put_32 (input_bfd
, value
, hit_data
);
4462 return bfd_reloc_ok
;
4464 case R_ARM_GNU_VTINHERIT
:
4465 case R_ARM_GNU_VTENTRY
:
4466 return bfd_reloc_ok
;
4468 case R_ARM_GOTOFF32
:
4469 /* Relocation is relative to the start of the
4470 global offset table. */
4472 BFD_ASSERT (sgot
!= NULL
);
4474 return bfd_reloc_notsupported
;
4476 /* If we are addressing a Thumb function, we need to adjust the
4477 address by one, so that attempts to call the function pointer will
4478 correctly interpret it as Thumb code. */
4479 if (sym_flags
== STT_ARM_TFUNC
)
4482 /* Note that sgot->output_offset is not involved in this
4483 calculation. We always want the start of .got. If we
4484 define _GLOBAL_OFFSET_TABLE in a different way, as is
4485 permitted by the ABI, we might have to change this
4487 value
-= sgot
->output_section
->vma
;
4488 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4489 contents
, rel
->r_offset
, value
,
4493 /* Use global offset table as symbol value. */
4494 BFD_ASSERT (sgot
!= NULL
);
4497 return bfd_reloc_notsupported
;
4499 *unresolved_reloc_p
= FALSE
;
4500 value
= sgot
->output_section
->vma
;
4501 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4502 contents
, rel
->r_offset
, value
,
4506 case R_ARM_GOT_PREL
:
4507 /* Relocation is to the entry for this symbol in the
4508 global offset table. */
4510 return bfd_reloc_notsupported
;
4517 off
= h
->got
.offset
;
4518 BFD_ASSERT (off
!= (bfd_vma
) -1);
4519 dyn
= globals
->root
.dynamic_sections_created
;
4521 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
4523 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4524 || (ELF_ST_VISIBILITY (h
->other
)
4525 && h
->root
.type
== bfd_link_hash_undefweak
))
4527 /* This is actually a static link, or it is a -Bsymbolic link
4528 and the symbol is defined locally. We must initialize this
4529 entry in the global offset table. Since the offset must
4530 always be a multiple of 4, we use the least significant bit
4531 to record whether we have initialized it already.
4533 When doing a dynamic link, we create a .rel(a).got relocation
4534 entry to initialize the value. This is done in the
4535 finish_dynamic_symbol routine. */
4540 /* If we are addressing a Thumb function, we need to
4541 adjust the address by one, so that attempts to
4542 call the function pointer will correctly
4543 interpret it as Thumb code. */
4544 if (sym_flags
== STT_ARM_TFUNC
)
4547 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
4552 *unresolved_reloc_p
= FALSE
;
4554 value
= sgot
->output_offset
+ off
;
4560 BFD_ASSERT (local_got_offsets
!= NULL
&&
4561 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
4563 off
= local_got_offsets
[r_symndx
];
4565 /* The offset must always be a multiple of 4. We use the
4566 least significant bit to record whether we have already
4567 generated the necessary reloc. */
4572 /* If we are addressing a Thumb function, we need to
4573 adjust the address by one, so that attempts to
4574 call the function pointer will correctly
4575 interpret it as Thumb code. */
4576 if (sym_flags
== STT_ARM_TFUNC
)
4579 if (globals
->use_rel
)
4580 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
4585 Elf_Internal_Rela outrel
;
4588 srelgot
= (bfd_get_section_by_name
4589 (dynobj
, RELOC_SECTION (globals
, ".got")));
4590 BFD_ASSERT (srelgot
!= NULL
);
4592 outrel
.r_addend
= addend
+ value
;
4593 outrel
.r_offset
= (sgot
->output_section
->vma
4594 + sgot
->output_offset
4596 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
4597 loc
= srelgot
->contents
;
4598 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
4599 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4602 local_got_offsets
[r_symndx
] |= 1;
4605 value
= sgot
->output_offset
+ off
;
4607 if (r_type
!= R_ARM_GOT32
)
4608 value
+= sgot
->output_section
->vma
;
4610 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4611 contents
, rel
->r_offset
, value
,
4614 case R_ARM_TLS_LDO32
:
4615 value
= value
- dtpoff_base (info
);
4617 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4618 contents
, rel
->r_offset
, value
,
4621 case R_ARM_TLS_LDM32
:
4625 if (globals
->sgot
== NULL
)
4628 off
= globals
->tls_ldm_got
.offset
;
4634 /* If we don't know the module number, create a relocation
4638 Elf_Internal_Rela outrel
;
4641 if (globals
->srelgot
== NULL
)
4644 outrel
.r_addend
= 0;
4645 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
4646 + globals
->sgot
->output_offset
+ off
);
4647 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
4649 if (globals
->use_rel
)
4650 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4651 globals
->sgot
->contents
+ off
);
4653 loc
= globals
->srelgot
->contents
;
4654 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
4655 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4658 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
4660 globals
->tls_ldm_got
.offset
|= 1;
4663 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
4664 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
4666 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4667 contents
, rel
->r_offset
, value
,
4671 case R_ARM_TLS_GD32
:
4672 case R_ARM_TLS_IE32
:
4678 if (globals
->sgot
== NULL
)
4685 dyn
= globals
->root
.dynamic_sections_created
;
4686 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
4688 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
4690 *unresolved_reloc_p
= FALSE
;
4693 off
= h
->got
.offset
;
4694 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
4698 if (local_got_offsets
== NULL
)
4700 off
= local_got_offsets
[r_symndx
];
4701 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
4704 if (tls_type
== GOT_UNKNOWN
)
4711 bfd_boolean need_relocs
= FALSE
;
4712 Elf_Internal_Rela outrel
;
4713 bfd_byte
*loc
= NULL
;
4716 /* The GOT entries have not been initialized yet. Do it
4717 now, and emit any relocations. If both an IE GOT and a
4718 GD GOT are necessary, we emit the GD first. */
4720 if ((info
->shared
|| indx
!= 0)
4722 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4723 || h
->root
.type
!= bfd_link_hash_undefweak
))
4726 if (globals
->srelgot
== NULL
)
4728 loc
= globals
->srelgot
->contents
;
4729 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
4732 if (tls_type
& GOT_TLS_GD
)
4736 outrel
.r_addend
= 0;
4737 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
4738 + globals
->sgot
->output_offset
4740 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
4742 if (globals
->use_rel
)
4743 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4744 globals
->sgot
->contents
+ cur_off
);
4746 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4747 globals
->srelgot
->reloc_count
++;
4748 loc
+= RELOC_SIZE (globals
);
4751 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
4752 globals
->sgot
->contents
+ cur_off
+ 4);
4755 outrel
.r_addend
= 0;
4756 outrel
.r_info
= ELF32_R_INFO (indx
,
4757 R_ARM_TLS_DTPOFF32
);
4758 outrel
.r_offset
+= 4;
4760 if (globals
->use_rel
)
4761 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4762 globals
->sgot
->contents
+ cur_off
+ 4);
4765 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4766 globals
->srelgot
->reloc_count
++;
4767 loc
+= RELOC_SIZE (globals
);
4772 /* If we are not emitting relocations for a
4773 general dynamic reference, then we must be in a
4774 static link or an executable link with the
4775 symbol binding locally. Mark it as belonging
4776 to module 1, the executable. */
4777 bfd_put_32 (output_bfd
, 1,
4778 globals
->sgot
->contents
+ cur_off
);
4779 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
4780 globals
->sgot
->contents
+ cur_off
+ 4);
4786 if (tls_type
& GOT_TLS_IE
)
4791 outrel
.r_addend
= value
- dtpoff_base (info
);
4793 outrel
.r_addend
= 0;
4794 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
4795 + globals
->sgot
->output_offset
4797 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
4799 if (globals
->use_rel
)
4800 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4801 globals
->sgot
->contents
+ cur_off
);
4803 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4804 globals
->srelgot
->reloc_count
++;
4805 loc
+= RELOC_SIZE (globals
);
4808 bfd_put_32 (output_bfd
, tpoff (info
, value
),
4809 globals
->sgot
->contents
+ cur_off
);
4816 local_got_offsets
[r_symndx
] |= 1;
4819 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
4821 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
4822 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
4824 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4825 contents
, rel
->r_offset
, value
,
4829 case R_ARM_TLS_LE32
:
4832 (*_bfd_error_handler
)
4833 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
4834 input_bfd
, input_section
,
4835 (long) rel
->r_offset
, howto
->name
);
4839 value
= tpoff (info
, value
);
4841 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4842 contents
, rel
->r_offset
, value
,
4846 if (globals
->fix_v4bx
)
4848 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4850 /* Ensure that we have a BX instruction. */
4851 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
4853 /* Preserve Rm (lowest four bits) and the condition code
4854 (highest four bits). Other bits encode MOV PC,Rm. */
4855 insn
= (insn
& 0xf000000f) | 0x01a0f000;
4857 bfd_put_32 (input_bfd
, insn
, hit_data
);
4859 return bfd_reloc_ok
;
4861 case R_ARM_MOVW_ABS_NC
:
4862 case R_ARM_MOVT_ABS
:
4863 case R_ARM_MOVW_PREL_NC
:
4864 case R_ARM_MOVT_PREL
:
4865 /* Until we properly support segment-base-relative addressing then
4866 we assume the segment base to be zero, as for the group relocations.
4867 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
4868 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
4869 case R_ARM_MOVW_BREL_NC
:
4870 case R_ARM_MOVW_BREL
:
4871 case R_ARM_MOVT_BREL
:
4873 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4875 if (globals
->use_rel
)
4877 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
4878 signed_addend
= (addend
^ 0x10000) - 0x10000;
4881 value
+= signed_addend
;
4883 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
4884 value
-= (input_section
->output_section
->vma
4885 + input_section
->output_offset
+ rel
->r_offset
);
4887 if (r_type
== R_ARM_MOVW_BREL
&& value
>= 0x10000)
4888 return bfd_reloc_overflow
;
4890 if (sym_flags
== STT_ARM_TFUNC
)
4893 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
4894 || r_type
== R_ARM_MOVT_BREL
)
4898 insn
|= value
& 0xfff;
4899 insn
|= (value
& 0xf000) << 4;
4900 bfd_put_32 (input_bfd
, insn
, hit_data
);
4902 return bfd_reloc_ok
;
4904 case R_ARM_THM_MOVW_ABS_NC
:
4905 case R_ARM_THM_MOVT_ABS
:
4906 case R_ARM_THM_MOVW_PREL_NC
:
4907 case R_ARM_THM_MOVT_PREL
:
4908 /* Until we properly support segment-base-relative addressing then
4909 we assume the segment base to be zero, as for the above relocations.
4910 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
4911 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
4912 as R_ARM_THM_MOVT_ABS. */
4913 case R_ARM_THM_MOVW_BREL_NC
:
4914 case R_ARM_THM_MOVW_BREL
:
4915 case R_ARM_THM_MOVT_BREL
:
4919 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
4920 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
4922 if (globals
->use_rel
)
4924 addend
= ((insn
>> 4) & 0xf000)
4925 | ((insn
>> 15) & 0x0800)
4926 | ((insn
>> 4) & 0x0700)
4928 signed_addend
= (addend
^ 0x10000) - 0x10000;
4931 value
+= signed_addend
;
4933 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
4934 value
-= (input_section
->output_section
->vma
4935 + input_section
->output_offset
+ rel
->r_offset
);
4937 if (r_type
== R_ARM_THM_MOVW_BREL
&& value
>= 0x10000)
4938 return bfd_reloc_overflow
;
4940 if (sym_flags
== STT_ARM_TFUNC
)
4943 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
4944 || r_type
== R_ARM_THM_MOVT_BREL
)
4948 insn
|= (value
& 0xf000) << 4;
4949 insn
|= (value
& 0x0800) << 15;
4950 insn
|= (value
& 0x0700) << 4;
4951 insn
|= (value
& 0x00ff);
4953 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4954 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4956 return bfd_reloc_ok
;
4958 case R_ARM_ALU_PC_G0_NC
:
4959 case R_ARM_ALU_PC_G1_NC
:
4960 case R_ARM_ALU_PC_G0
:
4961 case R_ARM_ALU_PC_G1
:
4962 case R_ARM_ALU_PC_G2
:
4963 case R_ARM_ALU_SB_G0_NC
:
4964 case R_ARM_ALU_SB_G1_NC
:
4965 case R_ARM_ALU_SB_G0
:
4966 case R_ARM_ALU_SB_G1
:
4967 case R_ARM_ALU_SB_G2
:
4969 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
4970 bfd_vma pc
= input_section
->output_section
->vma
4971 + input_section
->output_offset
+ rel
->r_offset
;
4972 /* sb should be the origin of the *segment* containing the symbol.
4973 It is not clear how to obtain this OS-dependent value, so we
4974 make an arbitrary choice of zero. */
4978 bfd_signed_vma signed_value
;
4981 /* Determine which group of bits to select. */
4984 case R_ARM_ALU_PC_G0_NC
:
4985 case R_ARM_ALU_PC_G0
:
4986 case R_ARM_ALU_SB_G0_NC
:
4987 case R_ARM_ALU_SB_G0
:
4991 case R_ARM_ALU_PC_G1_NC
:
4992 case R_ARM_ALU_PC_G1
:
4993 case R_ARM_ALU_SB_G1_NC
:
4994 case R_ARM_ALU_SB_G1
:
4998 case R_ARM_ALU_PC_G2
:
4999 case R_ARM_ALU_SB_G2
:
5007 /* If REL, extract the addend from the insn. If RELA, it will
5008 have already been fetched for us. */
5009 if (globals
->use_rel
)
5012 bfd_vma constant
= insn
& 0xff;
5013 bfd_vma rotation
= (insn
& 0xf00) >> 8;
5016 signed_addend
= constant
;
5019 /* Compensate for the fact that in the instruction, the
5020 rotation is stored in multiples of 2 bits. */
5023 /* Rotate "constant" right by "rotation" bits. */
5024 signed_addend
= (constant
>> rotation
) |
5025 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
5028 /* Determine if the instruction is an ADD or a SUB.
5029 (For REL, this determines the sign of the addend.) */
5030 negative
= identify_add_or_sub (insn
);
5033 (*_bfd_error_handler
)
5034 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
5035 input_bfd
, input_section
,
5036 (long) rel
->r_offset
, howto
->name
);
5037 return bfd_reloc_overflow
;
5040 signed_addend
*= negative
;
5043 /* Compute the value (X) to go in the place. */
5044 if (r_type
== R_ARM_ALU_PC_G0_NC
5045 || r_type
== R_ARM_ALU_PC_G1_NC
5046 || r_type
== R_ARM_ALU_PC_G0
5047 || r_type
== R_ARM_ALU_PC_G1
5048 || r_type
== R_ARM_ALU_PC_G2
)
5050 signed_value
= value
- pc
+ signed_addend
;
5052 /* Section base relative. */
5053 signed_value
= value
- sb
+ signed_addend
;
5055 /* If the target symbol is a Thumb function, then set the
5056 Thumb bit in the address. */
5057 if (sym_flags
== STT_ARM_TFUNC
)
5060 /* Calculate the value of the relevant G_n, in encoded
5061 constant-with-rotation format. */
5062 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
5065 /* Check for overflow if required. */
5066 if ((r_type
== R_ARM_ALU_PC_G0
5067 || r_type
== R_ARM_ALU_PC_G1
5068 || r_type
== R_ARM_ALU_PC_G2
5069 || r_type
== R_ARM_ALU_SB_G0
5070 || r_type
== R_ARM_ALU_SB_G1
5071 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
5073 (*_bfd_error_handler
)
5074 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5075 input_bfd
, input_section
,
5076 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5077 return bfd_reloc_overflow
;
5080 /* Mask out the value and the ADD/SUB part of the opcode; take care
5081 not to destroy the S bit. */
5084 /* Set the opcode according to whether the value to go in the
5085 place is negative. */
5086 if (signed_value
< 0)
5091 /* Encode the offset. */
5094 bfd_put_32 (input_bfd
, insn
, hit_data
);
5096 return bfd_reloc_ok
;
5098 case R_ARM_LDR_PC_G0
:
5099 case R_ARM_LDR_PC_G1
:
5100 case R_ARM_LDR_PC_G2
:
5101 case R_ARM_LDR_SB_G0
:
5102 case R_ARM_LDR_SB_G1
:
5103 case R_ARM_LDR_SB_G2
:
5105 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5106 bfd_vma pc
= input_section
->output_section
->vma
5107 + input_section
->output_offset
+ rel
->r_offset
;
5108 bfd_vma sb
= 0; /* See note above. */
5110 bfd_signed_vma signed_value
;
5113 /* Determine which groups of bits to calculate. */
5116 case R_ARM_LDR_PC_G0
:
5117 case R_ARM_LDR_SB_G0
:
5121 case R_ARM_LDR_PC_G1
:
5122 case R_ARM_LDR_SB_G1
:
5126 case R_ARM_LDR_PC_G2
:
5127 case R_ARM_LDR_SB_G2
:
5135 /* If REL, extract the addend from the insn. If RELA, it will
5136 have already been fetched for us. */
5137 if (globals
->use_rel
)
5139 int negative
= (insn
& (1 << 23)) ? 1 : -1;
5140 signed_addend
= negative
* (insn
& 0xfff);
5143 /* Compute the value (X) to go in the place. */
5144 if (r_type
== R_ARM_LDR_PC_G0
5145 || r_type
== R_ARM_LDR_PC_G1
5146 || r_type
== R_ARM_LDR_PC_G2
)
5148 signed_value
= value
- pc
+ signed_addend
;
5150 /* Section base relative. */
5151 signed_value
= value
- sb
+ signed_addend
;
5153 /* Calculate the value of the relevant G_{n-1} to obtain
5154 the residual at that stage. */
5155 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
5157 /* Check for overflow. */
5158 if (residual
>= 0x1000)
5160 (*_bfd_error_handler
)
5161 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5162 input_bfd
, input_section
,
5163 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5164 return bfd_reloc_overflow
;
5167 /* Mask out the value and U bit. */
5170 /* Set the U bit if the value to go in the place is non-negative. */
5171 if (signed_value
>= 0)
5174 /* Encode the offset. */
5177 bfd_put_32 (input_bfd
, insn
, hit_data
);
5179 return bfd_reloc_ok
;
5181 case R_ARM_LDRS_PC_G0
:
5182 case R_ARM_LDRS_PC_G1
:
5183 case R_ARM_LDRS_PC_G2
:
5184 case R_ARM_LDRS_SB_G0
:
5185 case R_ARM_LDRS_SB_G1
:
5186 case R_ARM_LDRS_SB_G2
:
5188 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5189 bfd_vma pc
= input_section
->output_section
->vma
5190 + input_section
->output_offset
+ rel
->r_offset
;
5191 bfd_vma sb
= 0; /* See note above. */
5193 bfd_signed_vma signed_value
;
5196 /* Determine which groups of bits to calculate. */
5199 case R_ARM_LDRS_PC_G0
:
5200 case R_ARM_LDRS_SB_G0
:
5204 case R_ARM_LDRS_PC_G1
:
5205 case R_ARM_LDRS_SB_G1
:
5209 case R_ARM_LDRS_PC_G2
:
5210 case R_ARM_LDRS_SB_G2
:
5218 /* If REL, extract the addend from the insn. If RELA, it will
5219 have already been fetched for us. */
5220 if (globals
->use_rel
)
5222 int negative
= (insn
& (1 << 23)) ? 1 : -1;
5223 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
5226 /* Compute the value (X) to go in the place. */
5227 if (r_type
== R_ARM_LDRS_PC_G0
5228 || r_type
== R_ARM_LDRS_PC_G1
5229 || r_type
== R_ARM_LDRS_PC_G2
)
5231 signed_value
= value
- pc
+ signed_addend
;
5233 /* Section base relative. */
5234 signed_value
= value
- sb
+ signed_addend
;
5236 /* Calculate the value of the relevant G_{n-1} to obtain
5237 the residual at that stage. */
5238 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
5240 /* Check for overflow. */
5241 if (residual
>= 0x100)
5243 (*_bfd_error_handler
)
5244 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5245 input_bfd
, input_section
,
5246 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5247 return bfd_reloc_overflow
;
5250 /* Mask out the value and U bit. */
5253 /* Set the U bit if the value to go in the place is non-negative. */
5254 if (signed_value
>= 0)
5257 /* Encode the offset. */
5258 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
5260 bfd_put_32 (input_bfd
, insn
, hit_data
);
5262 return bfd_reloc_ok
;
5264 case R_ARM_LDC_PC_G0
:
5265 case R_ARM_LDC_PC_G1
:
5266 case R_ARM_LDC_PC_G2
:
5267 case R_ARM_LDC_SB_G0
:
5268 case R_ARM_LDC_SB_G1
:
5269 case R_ARM_LDC_SB_G2
:
5271 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5272 bfd_vma pc
= input_section
->output_section
->vma
5273 + input_section
->output_offset
+ rel
->r_offset
;
5274 bfd_vma sb
= 0; /* See note above. */
5276 bfd_signed_vma signed_value
;
5279 /* Determine which groups of bits to calculate. */
5282 case R_ARM_LDC_PC_G0
:
5283 case R_ARM_LDC_SB_G0
:
5287 case R_ARM_LDC_PC_G1
:
5288 case R_ARM_LDC_SB_G1
:
5292 case R_ARM_LDC_PC_G2
:
5293 case R_ARM_LDC_SB_G2
:
5301 /* If REL, extract the addend from the insn. If RELA, it will
5302 have already been fetched for us. */
5303 if (globals
->use_rel
)
5305 int negative
= (insn
& (1 << 23)) ? 1 : -1;
5306 signed_addend
= negative
* ((insn
& 0xff) << 2);
5309 /* Compute the value (X) to go in the place. */
5310 if (r_type
== R_ARM_LDC_PC_G0
5311 || r_type
== R_ARM_LDC_PC_G1
5312 || r_type
== R_ARM_LDC_PC_G2
)
5314 signed_value
= value
- pc
+ signed_addend
;
5316 /* Section base relative. */
5317 signed_value
= value
- sb
+ signed_addend
;
5319 /* Calculate the value of the relevant G_{n-1} to obtain
5320 the residual at that stage. */
5321 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
5323 /* Check for overflow. (The absolute value to go in the place must be
5324 divisible by four and, after having been divided by four, must
5325 fit in eight bits.) */
5326 if ((residual
& 0x3) != 0 || residual
>= 0x400)
5328 (*_bfd_error_handler
)
5329 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5330 input_bfd
, input_section
,
5331 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5332 return bfd_reloc_overflow
;
5335 /* Mask out the value and U bit. */
5338 /* Set the U bit if the value to go in the place is non-negative. */
5339 if (signed_value
>= 0)
5342 /* Encode the offset. */
5343 insn
|= residual
>> 2;
5345 bfd_put_32 (input_bfd
, insn
, hit_data
);
5347 return bfd_reloc_ok
;
5350 return bfd_reloc_notsupported
;
5356 uleb128_size (unsigned int i
)
5368 /* Return TRUE if the attribute has the default value (0/""). */
5370 is_default_attr (aeabi_attribute
*attr
)
5372 if ((attr
->type
& 1) && attr
->i
!= 0)
5374 if ((attr
->type
& 2) && attr
->s
&& *attr
->s
)
5380 /* Return the size of a single attribute. */
5382 eabi_attr_size(int tag
, aeabi_attribute
*attr
)
5386 if (is_default_attr (attr
))
5389 size
= uleb128_size (tag
);
5391 size
+= uleb128_size (attr
->i
);
5393 size
+= strlen ((char *)attr
->s
) + 1;
5397 /* Returns the size of the eabi object attributess section. */
5399 elf32_arm_eabi_attr_size (bfd
*abfd
)
5402 aeabi_attribute
*attr
;
5403 aeabi_attribute_list
*list
;
5406 attr
= elf32_arm_tdata (abfd
)->known_eabi_attributes
;
5407 size
= 16; /* 'A' <size> "aeabi" 0x1 <size>. */
5408 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
5409 size
+= eabi_attr_size (i
, &attr
[i
]);
5411 for (list
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5414 size
+= eabi_attr_size (list
->tag
, &list
->attr
);
5420 write_uleb128 (bfd_byte
*p
, unsigned int val
)
5435 /* Write attribute ATTR to butter P, and return a pointer to the following
5438 write_eabi_attribute (bfd_byte
*p
, int tag
, aeabi_attribute
*attr
)
5440 /* Suppress default entries. */
5441 if (is_default_attr(attr
))
5444 p
= write_uleb128 (p
, tag
);
5446 p
= write_uleb128 (p
, attr
->i
);
5451 len
= strlen (attr
->s
) + 1;
5452 memcpy (p
, attr
->s
, len
);
5459 /* Write the contents of the eabi attributes section to p. */
5461 elf32_arm_set_eabi_attr_contents (bfd
*abfd
, bfd_byte
*contents
, bfd_vma size
)
5464 aeabi_attribute
*attr
;
5465 aeabi_attribute_list
*list
;
5470 bfd_put_32 (abfd
, size
- 1, p
);
5472 memcpy (p
, "aeabi", 6);
5475 bfd_put_32 (abfd
, size
- 11, p
);
5478 attr
= elf32_arm_tdata (abfd
)->known_eabi_attributes
;
5479 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
5480 p
= write_eabi_attribute (p
, i
, &attr
[i
]);
5482 for (list
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5485 p
= write_eabi_attribute (p
, list
->tag
, &list
->attr
);
5488 /* Override final_link to handle EABI object attribute sections. */
5491 elf32_arm_bfd_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
5494 struct bfd_link_order
*p
;
5495 asection
*attr_section
= NULL
;
5499 /* elf32_arm_merge_private_bfd_data will already have merged the
5500 object attributes. Remove the input sections from the link, and set
5501 the contents of the output secton. */
5502 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5504 if (strcmp (o
->name
, ".ARM.attributes") == 0)
5506 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5508 asection
*input_section
;
5510 if (p
->type
!= bfd_indirect_link_order
)
5512 input_section
= p
->u
.indirect
.section
;
5513 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5514 elf_link_input_bfd ignores this section. */
5515 input_section
->flags
&= ~SEC_HAS_CONTENTS
;
5518 size
= elf32_arm_eabi_attr_size (abfd
);
5519 bfd_set_section_size (abfd
, o
, size
);
5521 /* Skip this section later on. */
5522 o
->map_head
.link_order
= NULL
;
5525 /* Invoke the ELF linker to do all the work. */
5526 if (!bfd_elf_final_link (abfd
, info
))
5531 contents
= bfd_malloc(size
);
5532 if (contents
== NULL
)
5534 elf32_arm_set_eabi_attr_contents (abfd
, contents
, size
);
5535 bfd_set_section_contents (abfd
, attr_section
, contents
, 0, size
);
5542 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
5544 arm_add_to_rel (bfd
* abfd
,
5546 reloc_howto_type
* howto
,
5547 bfd_signed_vma increment
)
5549 bfd_signed_vma addend
;
5551 if (howto
->type
== R_ARM_THM_CALL
)
5553 int upper_insn
, lower_insn
;
5556 upper_insn
= bfd_get_16 (abfd
, address
);
5557 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
5558 upper
= upper_insn
& 0x7ff;
5559 lower
= lower_insn
& 0x7ff;
5561 addend
= (upper
<< 12) | (lower
<< 1);
5562 addend
+= increment
;
5565 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
5566 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
5568 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
5569 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
5575 contents
= bfd_get_32 (abfd
, address
);
5577 /* Get the (signed) value from the instruction. */
5578 addend
= contents
& howto
->src_mask
;
5579 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5581 bfd_signed_vma mask
;
5584 mask
&= ~ howto
->src_mask
;
5588 /* Add in the increment, (which is a byte value). */
5589 switch (howto
->type
)
5592 addend
+= increment
;
5599 addend
<<= howto
->size
;
5600 addend
+= increment
;
5602 /* Should we check for overflow here ? */
5604 /* Drop any undesired bits. */
5605 addend
>>= howto
->rightshift
;
5609 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
5611 bfd_put_32 (abfd
, contents
, address
);
5615 #define IS_ARM_TLS_RELOC(R_TYPE) \
5616 ((R_TYPE) == R_ARM_TLS_GD32 \
5617 || (R_TYPE) == R_ARM_TLS_LDO32 \
5618 || (R_TYPE) == R_ARM_TLS_LDM32 \
5619 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
5620 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
5621 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
5622 || (R_TYPE) == R_ARM_TLS_LE32 \
5623 || (R_TYPE) == R_ARM_TLS_IE32)
5625 /* Relocate an ARM ELF section. */
5627 elf32_arm_relocate_section (bfd
* output_bfd
,
5628 struct bfd_link_info
* info
,
5630 asection
* input_section
,
5631 bfd_byte
* contents
,
5632 Elf_Internal_Rela
* relocs
,
5633 Elf_Internal_Sym
* local_syms
,
5634 asection
** local_sections
)
5636 Elf_Internal_Shdr
*symtab_hdr
;
5637 struct elf_link_hash_entry
**sym_hashes
;
5638 Elf_Internal_Rela
*rel
;
5639 Elf_Internal_Rela
*relend
;
5641 struct elf32_arm_link_hash_table
* globals
;
5643 globals
= elf32_arm_hash_table (info
);
5644 if (info
->relocatable
&& !globals
->use_rel
)
5647 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
5648 sym_hashes
= elf_sym_hashes (input_bfd
);
5651 relend
= relocs
+ input_section
->reloc_count
;
5652 for (; rel
< relend
; rel
++)
5655 reloc_howto_type
* howto
;
5656 unsigned long r_symndx
;
5657 Elf_Internal_Sym
* sym
;
5659 struct elf_link_hash_entry
* h
;
5661 bfd_reloc_status_type r
;
5664 bfd_boolean unresolved_reloc
= FALSE
;
5665 char *error_message
= NULL
;
5667 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5668 r_type
= ELF32_R_TYPE (rel
->r_info
);
5669 r_type
= arm_real_reloc_type (globals
, r_type
);
5671 if ( r_type
== R_ARM_GNU_VTENTRY
5672 || r_type
== R_ARM_GNU_VTINHERIT
)
5675 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
5676 howto
= bfd_reloc
.howto
;
5678 if (info
->relocatable
&& globals
->use_rel
)
5680 /* This is a relocatable link. We don't have to change
5681 anything, unless the reloc is against a section symbol,
5682 in which case we have to adjust according to where the
5683 section symbol winds up in the output section. */
5684 if (r_symndx
< symtab_hdr
->sh_info
)
5686 sym
= local_syms
+ r_symndx
;
5687 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
5689 sec
= local_sections
[r_symndx
];
5690 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
5692 (bfd_signed_vma
) (sec
->output_offset
5700 /* This is a final link. */
5705 if (r_symndx
< symtab_hdr
->sh_info
)
5707 sym
= local_syms
+ r_symndx
;
5708 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
5709 sec
= local_sections
[r_symndx
];
5710 if (globals
->use_rel
)
5712 relocation
= (sec
->output_section
->vma
5713 + sec
->output_offset
5715 if ((sec
->flags
& SEC_MERGE
)
5716 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
5719 bfd_vma addend
, value
;
5721 if (howto
->rightshift
)
5723 (*_bfd_error_handler
)
5724 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
5725 input_bfd
, input_section
,
5726 (long) rel
->r_offset
, howto
->name
);
5730 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
5732 /* Get the (signed) value from the instruction. */
5733 addend
= value
& howto
->src_mask
;
5734 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5736 bfd_signed_vma mask
;
5739 mask
&= ~ howto
->src_mask
;
5744 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
5746 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
5747 value
= (value
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
5748 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
5752 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
5758 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
5759 r_symndx
, symtab_hdr
, sym_hashes
,
5761 unresolved_reloc
, warned
);
5767 name
= h
->root
.root
.string
;
5770 name
= (bfd_elf_string_from_elf_section
5771 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
5772 if (name
== NULL
|| *name
== '\0')
5773 name
= bfd_section_name (input_bfd
, sec
);
5777 && r_type
!= R_ARM_NONE
5779 || h
->root
.type
== bfd_link_hash_defined
5780 || h
->root
.type
== bfd_link_hash_defweak
)
5781 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
5783 (*_bfd_error_handler
)
5784 ((sym_type
== STT_TLS
5785 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
5786 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
5789 (long) rel
->r_offset
,
5794 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
5795 input_section
, contents
, rel
,
5796 relocation
, info
, sec
, name
,
5797 (h
? ELF_ST_TYPE (h
->type
) :
5798 ELF_ST_TYPE (sym
->st_info
)), h
,
5799 &unresolved_reloc
, &error_message
);
5801 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5802 because such sections are not SEC_ALLOC and thus ld.so will
5803 not process them. */
5804 if (unresolved_reloc
5805 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
5808 (*_bfd_error_handler
)
5809 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5812 (long) rel
->r_offset
,
5814 h
->root
.root
.string
);
5818 if (r
!= bfd_reloc_ok
)
5822 case bfd_reloc_overflow
:
5823 /* If the overflowing reloc was to an undefined symbol,
5824 we have already printed one error message and there
5825 is no point complaining again. */
5827 h
->root
.type
!= bfd_link_hash_undefined
)
5828 && (!((*info
->callbacks
->reloc_overflow
)
5829 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
5830 (bfd_vma
) 0, input_bfd
, input_section
,
5835 case bfd_reloc_undefined
:
5836 if (!((*info
->callbacks
->undefined_symbol
)
5837 (info
, name
, input_bfd
, input_section
,
5838 rel
->r_offset
, TRUE
)))
5842 case bfd_reloc_outofrange
:
5843 error_message
= _("out of range");
5846 case bfd_reloc_notsupported
:
5847 error_message
= _("unsupported relocation");
5850 case bfd_reloc_dangerous
:
5851 /* error_message should already be set. */
5855 error_message
= _("unknown error");
5859 BFD_ASSERT (error_message
!= NULL
);
5860 if (!((*info
->callbacks
->reloc_dangerous
)
5861 (info
, error_message
, input_bfd
, input_section
,
5872 /* Allocate/find an object attribute. */
5873 static aeabi_attribute
*
5874 elf32_arm_new_eabi_attr (bfd
*abfd
, int tag
)
5876 aeabi_attribute
*attr
;
5877 aeabi_attribute_list
*list
;
5878 aeabi_attribute_list
*p
;
5879 aeabi_attribute_list
**lastp
;
5882 if (tag
< NUM_KNOWN_ATTRIBUTES
)
5884 /* Knwon tags are preallocated. */
5885 attr
= &elf32_arm_tdata (abfd
)->known_eabi_attributes
[tag
];
5889 /* Create a new tag. */
5890 list
= (aeabi_attribute_list
*)
5891 bfd_alloc (abfd
, sizeof (aeabi_attribute_list
));
5892 memset (list
, 0, sizeof (aeabi_attribute_list
));
5894 /* Keep the tag list in order. */
5895 lastp
= &elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5896 for (p
= *lastp
; p
; p
= p
->next
)
5902 list
->next
= *lastp
;
5911 elf32_arm_get_eabi_attr_int (bfd
*abfd
, int tag
)
5913 aeabi_attribute_list
*p
;
5915 if (tag
< NUM_KNOWN_ATTRIBUTES
)
5917 /* Knwon tags are preallocated. */
5918 return elf32_arm_tdata (abfd
)->known_eabi_attributes
[tag
].i
;
5922 for (p
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5936 elf32_arm_add_eabi_attr_int (bfd
*abfd
, int tag
, unsigned int i
)
5938 aeabi_attribute
*attr
;
5940 attr
= elf32_arm_new_eabi_attr (abfd
, tag
);
5946 attr_strdup (bfd
*abfd
, const char * s
)
5951 len
= strlen (s
) + 1;
5952 p
= (char *)bfd_alloc(abfd
, len
);
5953 return memcpy (p
, s
, len
);
5957 elf32_arm_add_eabi_attr_string (bfd
*abfd
, int tag
, const char *s
)
5959 aeabi_attribute
*attr
;
5961 attr
= elf32_arm_new_eabi_attr (abfd
, tag
);
5963 attr
->s
= attr_strdup (abfd
, s
);
5967 elf32_arm_add_eabi_attr_compat (bfd
*abfd
, unsigned int i
, const char *s
)
5969 aeabi_attribute_list
*list
;
5970 aeabi_attribute_list
*p
;
5971 aeabi_attribute_list
**lastp
;
5973 list
= (aeabi_attribute_list
*)
5974 bfd_alloc (abfd
, sizeof (aeabi_attribute_list
));
5975 memset (list
, 0, sizeof (aeabi_attribute_list
));
5976 list
->tag
= Tag_compatibility
;
5977 list
->attr
.type
= 3;
5979 list
->attr
.s
= attr_strdup (abfd
, s
);
5981 lastp
= &elf32_arm_tdata (abfd
)->other_eabi_attributes
;
5982 for (p
= *lastp
; p
; p
= p
->next
)
5985 if (p
->tag
!= Tag_compatibility
)
5987 cmp
= strcmp(s
, p
->attr
.s
);
5988 if (cmp
< 0 || (cmp
== 0 && i
< p
->attr
.i
))
5992 list
->next
= *lastp
;
5996 /* Set the right machine number. */
5999 elf32_arm_object_p (bfd
*abfd
)
6003 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
6005 if (mach
!= bfd_mach_arm_unknown
)
6006 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
6008 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
6009 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
6012 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
6017 /* Function to keep ARM specific flags in the ELF header. */
6020 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
6022 if (elf_flags_init (abfd
)
6023 && elf_elfheader (abfd
)->e_flags
!= flags
)
6025 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
6027 if (flags
& EF_ARM_INTERWORK
)
6028 (*_bfd_error_handler
)
6029 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
6033 (_("Warning: Clearing the interworking flag of %B due to outside request"),
6039 elf_elfheader (abfd
)->e_flags
= flags
;
6040 elf_flags_init (abfd
) = TRUE
;
6046 /* Copy the eabi object attribute from IBFD to OBFD. */
6048 copy_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
6050 aeabi_attribute
*in_attr
;
6051 aeabi_attribute
*out_attr
;
6052 aeabi_attribute_list
*list
;
6055 in_attr
= elf32_arm_tdata (ibfd
)->known_eabi_attributes
;
6056 out_attr
= elf32_arm_tdata (obfd
)->known_eabi_attributes
;
6057 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
6059 out_attr
->i
= in_attr
->i
;
6060 if (in_attr
->s
&& *in_attr
->s
)
6061 out_attr
->s
= attr_strdup (obfd
, in_attr
->s
);
6066 for (list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
6070 in_attr
= &list
->attr
;
6071 switch (in_attr
->type
)
6074 elf32_arm_add_eabi_attr_int (obfd
, list
->tag
, in_attr
->i
);
6077 elf32_arm_add_eabi_attr_string (obfd
, list
->tag
, in_attr
->s
);
6080 elf32_arm_add_eabi_attr_compat (obfd
, in_attr
->i
, in_attr
->s
);
6089 /* Copy backend specific data from one object module to another. */
6092 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
6097 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
6098 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
6101 in_flags
= elf_elfheader (ibfd
)->e_flags
;
6102 out_flags
= elf_elfheader (obfd
)->e_flags
;
6104 if (elf_flags_init (obfd
)
6105 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
6106 && in_flags
!= out_flags
)
6108 /* Cannot mix APCS26 and APCS32 code. */
6109 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
6112 /* Cannot mix float APCS and non-float APCS code. */
6113 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
6116 /* If the src and dest have different interworking flags
6117 then turn off the interworking bit. */
6118 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
6120 if (out_flags
& EF_ARM_INTERWORK
)
6122 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
6125 in_flags
&= ~EF_ARM_INTERWORK
;
6128 /* Likewise for PIC, though don't warn for this case. */
6129 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
6130 in_flags
&= ~EF_ARM_PIC
;
6133 elf_elfheader (obfd
)->e_flags
= in_flags
;
6134 elf_flags_init (obfd
) = TRUE
;
6136 /* Also copy the EI_OSABI field. */
6137 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
6138 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
6140 /* Copy EABI object attributes. */
6141 copy_eabi_attributes (ibfd
, obfd
);
6146 /* Values for Tag_ABI_PCS_R9_use. */
6155 /* Values for Tag_ABI_PCS_RW_data. */
6158 AEABI_PCS_RW_data_absolute
,
6159 AEABI_PCS_RW_data_PCrel
,
6160 AEABI_PCS_RW_data_SBrel
,
6161 AEABI_PCS_RW_data_unused
6164 /* Values for Tag_ABI_enum_size. */
6170 AEABI_enum_forced_wide
6173 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
6174 are conflicting attributes. */
6176 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
6178 aeabi_attribute
*in_attr
;
6179 aeabi_attribute
*out_attr
;
6180 aeabi_attribute_list
*in_list
;
6181 aeabi_attribute_list
*out_list
;
6182 /* Some tags have 0 = don't care, 1 = strong requirement,
6183 2 = weak requirement. */
6184 static const int order_312
[3] = {3, 1, 2};
6187 if (!elf32_arm_tdata (ibfd
)->known_eabi_attributes
[0].i
)
6189 /* This is the first object. Copy the attributes. */
6190 copy_eabi_attributes (ibfd
, obfd
);
6194 /* Use the Tag_null value to indicate the attributes have been
6196 elf32_arm_tdata (ibfd
)->known_eabi_attributes
[0].i
= 1;
6198 in_attr
= elf32_arm_tdata (ibfd
)->known_eabi_attributes
;
6199 out_attr
= elf32_arm_tdata (obfd
)->known_eabi_attributes
;
6200 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
6201 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
6203 /* Ignore mismatches if teh object doesn't use floating point. */
6204 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
6205 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
6206 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
6209 (_("ERROR: %B uses VFP register arguments, %B does not"),
6215 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
6217 /* Merge this attribute with existing attributes. */
6220 case Tag_CPU_raw_name
:
6222 /* Use whichever has the greatest architecture requirements. */
6223 if (in_attr
[Tag_CPU_arch
].i
> out_attr
[Tag_CPU_arch
].i
)
6224 out_attr
[i
].s
= attr_strdup(obfd
, in_attr
[i
].s
);
6227 case Tag_ABI_optimization_goals
:
6228 case Tag_ABI_FP_optimization_goals
:
6229 /* Use the first value seen. */
6233 case Tag_ARM_ISA_use
:
6234 case Tag_THUMB_ISA_use
:
6238 /* ??? Do NEON and WMMX conflict? */
6239 case Tag_ABI_FP_rounding
:
6240 case Tag_ABI_FP_denormal
:
6241 case Tag_ABI_FP_exceptions
:
6242 case Tag_ABI_FP_user_exceptions
:
6243 case Tag_ABI_FP_number_model
:
6244 case Tag_ABI_align8_preserved
:
6245 case Tag_ABI_HardFP_use
:
6246 /* Use the largest value specified. */
6247 if (in_attr
[i
].i
> out_attr
[i
].i
)
6248 out_attr
[i
].i
= in_attr
[i
].i
;
6251 case Tag_CPU_arch_profile
:
6252 /* Warn if conflicting architecture profiles used. */
6253 if (out_attr
[i
].i
&& in_attr
[i
].i
&& in_attr
[i
].i
!= out_attr
[i
].i
)
6256 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
6257 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
6261 out_attr
[i
].i
= in_attr
[i
].i
;
6263 case Tag_PCS_config
:
6264 if (out_attr
[i
].i
== 0)
6265 out_attr
[i
].i
= in_attr
[i
].i
;
6266 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
6268 /* It's sometimes ok to mix different configs, so this is only
6271 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
6274 case Tag_ABI_PCS_R9_use
:
6275 if (out_attr
[i
].i
!= AEABI_R9_unused
6276 && in_attr
[i
].i
!= AEABI_R9_unused
)
6279 (_("ERROR: %B: Conflicting use of R9"), ibfd
);
6282 if (out_attr
[i
].i
== AEABI_R9_unused
)
6283 out_attr
[i
].i
= in_attr
[i
].i
;
6285 case Tag_ABI_PCS_RW_data
:
6286 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
6287 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
6288 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
6291 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
6295 /* Use the smallest value specified. */
6296 if (in_attr
[i
].i
< out_attr
[i
].i
)
6297 out_attr
[i
].i
= in_attr
[i
].i
;
6299 case Tag_ABI_PCS_RO_data
:
6300 /* Use the smallest value specified. */
6301 if (in_attr
[i
].i
< out_attr
[i
].i
)
6302 out_attr
[i
].i
= in_attr
[i
].i
;
6304 case Tag_ABI_PCS_GOT_use
:
6305 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
6306 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
6307 out_attr
[i
].i
= in_attr
[i
].i
;
6309 case Tag_ABI_PCS_wchar_t
:
6310 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
)
6313 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd
);
6317 out_attr
[i
].i
= in_attr
[i
].i
;
6319 case Tag_ABI_align8_needed
:
6320 /* ??? Check against Tag_ABI_align8_preserved. */
6321 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
6322 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
6323 out_attr
[i
].i
= in_attr
[i
].i
;
6325 case Tag_ABI_enum_size
:
6326 if (in_attr
[i
].i
!= AEABI_enum_unused
)
6328 if (out_attr
[i
].i
== AEABI_enum_unused
6329 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
6331 /* The existing object is compatible with anything.
6332 Use whatever requirements the new object has. */
6333 out_attr
[i
].i
= in_attr
[i
].i
;
6335 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
6336 && out_attr
[i
].i
!= in_attr
[i
].i
)
6339 (_("ERROR: %B: Conflicting enum sizes"), ibfd
);
6343 case Tag_ABI_VFP_args
:
6346 case Tag_ABI_WMMX_args
:
6347 if (in_attr
[i
].i
!= out_attr
[i
].i
)
6350 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
6355 default: /* All known attributes should be explicitly covered. */
6360 in_list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
6361 out_list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
6362 while (in_list
&& in_list
->tag
== Tag_compatibility
)
6364 in_attr
= &in_list
->attr
;
6365 if (in_attr
->i
== 0)
6367 if (in_attr
->i
== 1)
6370 (_("ERROR: %B: Must be processed by '%s' toolchain"),
6374 if (!out_list
|| out_list
->tag
!= Tag_compatibility
6375 || strcmp (in_attr
->s
, out_list
->attr
.s
) != 0)
6377 /* Add this compatibility tag to the output. */
6378 elf32_arm_add_eabi_attr_compat (obfd
, in_attr
->i
, in_attr
->s
);
6381 out_attr
= &out_list
->attr
;
6382 /* Check all the input tags with the same identifier. */
6385 if (out_list
->tag
!= Tag_compatibility
6386 || in_attr
->i
!= out_attr
->i
6387 || strcmp (in_attr
->s
, out_attr
->s
) != 0)
6390 (_("ERROR: %B: Incompatible object tag '%s':%d"),
6391 ibfd
, in_attr
->s
, in_attr
->i
);
6394 in_list
= in_list
->next
;
6395 if (in_list
->tag
!= Tag_compatibility
6396 || strcmp (in_attr
->s
, in_list
->attr
.s
) != 0)
6398 in_attr
= &in_list
->attr
;
6399 out_list
= out_list
->next
;
6401 out_attr
= &out_list
->attr
;
6404 /* Check the output doesn't have extra tags with this identifier. */
6405 if (out_list
&& out_list
->tag
== Tag_compatibility
6406 && strcmp (in_attr
->s
, out_list
->attr
.s
) == 0)
6409 (_("ERROR: %B: Incompatible object tag '%s':%d"),
6410 ibfd
, in_attr
->s
, out_list
->attr
.i
);
6415 for (; in_list
; in_list
= in_list
->next
)
6417 if ((in_list
->tag
& 128) < 64)
6420 (_("Warning: %B: Unknown EABI object attribute %d"),
6421 ibfd
, in_list
->tag
);
6429 /* Return TRUE if the two EABI versions are incompatible. */
6432 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
6434 /* v4 and v5 are the same spec before and after it was released,
6435 so allow mixing them. */
6436 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
6437 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
6440 return (iver
== over
);
6443 /* Merge backend specific data from an object file to the output
6444 object file when linking. */
6447 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
6451 bfd_boolean flags_compatible
= TRUE
;
6454 /* Check if we have the same endianess. */
6455 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
6458 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
6459 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
6462 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
6465 /* The input BFD must have had its flags initialised. */
6466 /* The following seems bogus to me -- The flags are initialized in
6467 the assembler but I don't think an elf_flags_init field is
6468 written into the object. */
6469 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6471 in_flags
= elf_elfheader (ibfd
)->e_flags
;
6472 out_flags
= elf_elfheader (obfd
)->e_flags
;
6474 if (!elf_flags_init (obfd
))
6476 /* If the input is the default architecture and had the default
6477 flags then do not bother setting the flags for the output
6478 architecture, instead allow future merges to do this. If no
6479 future merges ever set these flags then they will retain their
6480 uninitialised values, which surprise surprise, correspond
6481 to the default values. */
6482 if (bfd_get_arch_info (ibfd
)->the_default
6483 && elf_elfheader (ibfd
)->e_flags
== 0)
6486 elf_flags_init (obfd
) = TRUE
;
6487 elf_elfheader (obfd
)->e_flags
= in_flags
;
6489 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
6490 && bfd_get_arch_info (obfd
)->the_default
)
6491 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
6496 /* Determine what should happen if the input ARM architecture
6497 does not match the output ARM architecture. */
6498 if (! bfd_arm_merge_machines (ibfd
, obfd
))
6501 /* Identical flags must be compatible. */
6502 if (in_flags
== out_flags
)
6505 /* Check to see if the input BFD actually contains any sections. If
6506 not, its flags may not have been initialised either, but it
6507 cannot actually cause any incompatiblity. Do not short-circuit
6508 dynamic objects; their section list may be emptied by
6509 elf_link_add_object_symbols.
6511 Also check to see if there are no code sections in the input.
6512 In this case there is no need to check for code specific flags.
6513 XXX - do we need to worry about floating-point format compatability
6514 in data sections ? */
6515 if (!(ibfd
->flags
& DYNAMIC
))
6517 bfd_boolean null_input_bfd
= TRUE
;
6518 bfd_boolean only_data_sections
= TRUE
;
6520 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6522 /* Ignore synthetic glue sections. */
6523 if (strcmp (sec
->name
, ".glue_7")
6524 && strcmp (sec
->name
, ".glue_7t"))
6526 if ((bfd_get_section_flags (ibfd
, sec
)
6527 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
6528 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
6529 only_data_sections
= FALSE
;
6531 null_input_bfd
= FALSE
;
6536 if (null_input_bfd
|| only_data_sections
)
6540 /* Complain about various flag mismatches. */
6541 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
6542 EF_ARM_EABI_VERSION (out_flags
)))
6545 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
6547 (in_flags
& EF_ARM_EABIMASK
) >> 24,
6548 (out_flags
& EF_ARM_EABIMASK
) >> 24);
6552 /* Not sure what needs to be checked for EABI versions >= 1. */
6553 /* VxWorks libraries do not use these flags. */
6554 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
6555 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
6556 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
6558 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
6561 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
6563 in_flags
& EF_ARM_APCS_26
? 26 : 32,
6564 out_flags
& EF_ARM_APCS_26
? 26 : 32);
6565 flags_compatible
= FALSE
;
6568 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
6570 if (in_flags
& EF_ARM_APCS_FLOAT
)
6572 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
6576 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
6579 flags_compatible
= FALSE
;
6582 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
6584 if (in_flags
& EF_ARM_VFP_FLOAT
)
6586 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
6590 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
6593 flags_compatible
= FALSE
;
6596 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
6598 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
6600 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
6604 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
6607 flags_compatible
= FALSE
;
6610 #ifdef EF_ARM_SOFT_FLOAT
6611 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
6613 /* We can allow interworking between code that is VFP format
6614 layout, and uses either soft float or integer regs for
6615 passing floating point arguments and results. We already
6616 know that the APCS_FLOAT flags match; similarly for VFP
6618 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
6619 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
6621 if (in_flags
& EF_ARM_SOFT_FLOAT
)
6623 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
6627 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
6630 flags_compatible
= FALSE
;
6635 /* Interworking mismatch is only a warning. */
6636 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
6638 if (in_flags
& EF_ARM_INTERWORK
)
6641 (_("Warning: %B supports interworking, whereas %B does not"),
6647 (_("Warning: %B does not support interworking, whereas %B does"),
6653 return flags_compatible
;
6656 /* Display the flags field. */
6659 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
6661 FILE * file
= (FILE *) ptr
;
6662 unsigned long flags
;
6664 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
6666 /* Print normal ELF private data. */
6667 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6669 flags
= elf_elfheader (abfd
)->e_flags
;
6670 /* Ignore init flag - it may not be set, despite the flags field
6671 containing valid data. */
6673 /* xgettext:c-format */
6674 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
6676 switch (EF_ARM_EABI_VERSION (flags
))
6678 case EF_ARM_EABI_UNKNOWN
:
6679 /* The following flag bits are GNU extensions and not part of the
6680 official ARM ELF extended ABI. Hence they are only decoded if
6681 the EABI version is not set. */
6682 if (flags
& EF_ARM_INTERWORK
)
6683 fprintf (file
, _(" [interworking enabled]"));
6685 if (flags
& EF_ARM_APCS_26
)
6686 fprintf (file
, " [APCS-26]");
6688 fprintf (file
, " [APCS-32]");
6690 if (flags
& EF_ARM_VFP_FLOAT
)
6691 fprintf (file
, _(" [VFP float format]"));
6692 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
6693 fprintf (file
, _(" [Maverick float format]"));
6695 fprintf (file
, _(" [FPA float format]"));
6697 if (flags
& EF_ARM_APCS_FLOAT
)
6698 fprintf (file
, _(" [floats passed in float registers]"));
6700 if (flags
& EF_ARM_PIC
)
6701 fprintf (file
, _(" [position independent]"));
6703 if (flags
& EF_ARM_NEW_ABI
)
6704 fprintf (file
, _(" [new ABI]"));
6706 if (flags
& EF_ARM_OLD_ABI
)
6707 fprintf (file
, _(" [old ABI]"));
6709 if (flags
& EF_ARM_SOFT_FLOAT
)
6710 fprintf (file
, _(" [software FP]"));
6712 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
6713 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
6714 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
6715 | EF_ARM_MAVERICK_FLOAT
);
6718 case EF_ARM_EABI_VER1
:
6719 fprintf (file
, _(" [Version1 EABI]"));
6721 if (flags
& EF_ARM_SYMSARESORTED
)
6722 fprintf (file
, _(" [sorted symbol table]"));
6724 fprintf (file
, _(" [unsorted symbol table]"));
6726 flags
&= ~ EF_ARM_SYMSARESORTED
;
6729 case EF_ARM_EABI_VER2
:
6730 fprintf (file
, _(" [Version2 EABI]"));
6732 if (flags
& EF_ARM_SYMSARESORTED
)
6733 fprintf (file
, _(" [sorted symbol table]"));
6735 fprintf (file
, _(" [unsorted symbol table]"));
6737 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
6738 fprintf (file
, _(" [dynamic symbols use segment index]"));
6740 if (flags
& EF_ARM_MAPSYMSFIRST
)
6741 fprintf (file
, _(" [mapping symbols precede others]"));
6743 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
6744 | EF_ARM_MAPSYMSFIRST
);
6747 case EF_ARM_EABI_VER3
:
6748 fprintf (file
, _(" [Version3 EABI]"));
6751 case EF_ARM_EABI_VER4
:
6752 fprintf (file
, _(" [Version4 EABI]"));
6755 case EF_ARM_EABI_VER5
:
6756 fprintf (file
, _(" [Version5 EABI]"));
6758 if (flags
& EF_ARM_BE8
)
6759 fprintf (file
, _(" [BE8]"));
6761 if (flags
& EF_ARM_LE8
)
6762 fprintf (file
, _(" [LE8]"));
6764 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
6768 fprintf (file
, _(" <EABI version unrecognised>"));
6772 flags
&= ~ EF_ARM_EABIMASK
;
6774 if (flags
& EF_ARM_RELEXEC
)
6775 fprintf (file
, _(" [relocatable executable]"));
6777 if (flags
& EF_ARM_HASENTRY
)
6778 fprintf (file
, _(" [has entry point]"));
6780 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
6783 fprintf (file
, _("<Unrecognised flag bits set>"));
6791 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
6793 switch (ELF_ST_TYPE (elf_sym
->st_info
))
6796 return ELF_ST_TYPE (elf_sym
->st_info
);
6799 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
6800 This allows us to distinguish between data used by Thumb instructions
6801 and non-data (which is probably code) inside Thumb regions of an
6803 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
6804 return ELF_ST_TYPE (elf_sym
->st_info
);
6815 elf32_arm_gc_mark_hook (asection
*sec
,
6816 struct bfd_link_info
*info
,
6817 Elf_Internal_Rela
*rel
,
6818 struct elf_link_hash_entry
*h
,
6819 Elf_Internal_Sym
*sym
)
6822 switch (ELF32_R_TYPE (rel
->r_info
))
6824 case R_ARM_GNU_VTINHERIT
:
6825 case R_ARM_GNU_VTENTRY
:
6829 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6832 /* Update the got entry reference counts for the section being removed. */
6835 elf32_arm_gc_sweep_hook (bfd
* abfd
,
6836 struct bfd_link_info
* info
,
6838 const Elf_Internal_Rela
* relocs
)
6840 Elf_Internal_Shdr
*symtab_hdr
;
6841 struct elf_link_hash_entry
**sym_hashes
;
6842 bfd_signed_vma
*local_got_refcounts
;
6843 const Elf_Internal_Rela
*rel
, *relend
;
6844 struct elf32_arm_link_hash_table
* globals
;
6846 globals
= elf32_arm_hash_table (info
);
6848 elf_section_data (sec
)->local_dynrel
= NULL
;
6850 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
6851 sym_hashes
= elf_sym_hashes (abfd
);
6852 local_got_refcounts
= elf_local_got_refcounts (abfd
);
6854 relend
= relocs
+ sec
->reloc_count
;
6855 for (rel
= relocs
; rel
< relend
; rel
++)
6857 unsigned long r_symndx
;
6858 struct elf_link_hash_entry
*h
= NULL
;
6861 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6862 if (r_symndx
>= symtab_hdr
->sh_info
)
6864 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6865 while (h
->root
.type
== bfd_link_hash_indirect
6866 || h
->root
.type
== bfd_link_hash_warning
)
6867 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6870 r_type
= ELF32_R_TYPE (rel
->r_info
);
6871 r_type
= arm_real_reloc_type (globals
, r_type
);
6875 case R_ARM_GOT_PREL
:
6876 case R_ARM_TLS_GD32
:
6877 case R_ARM_TLS_IE32
:
6880 if (h
->got
.refcount
> 0)
6881 h
->got
.refcount
-= 1;
6883 else if (local_got_refcounts
!= NULL
)
6885 if (local_got_refcounts
[r_symndx
] > 0)
6886 local_got_refcounts
[r_symndx
] -= 1;
6890 case R_ARM_TLS_LDM32
:
6891 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
6895 case R_ARM_ABS32_NOI
:
6897 case R_ARM_REL32_NOI
:
6903 case R_ARM_THM_CALL
:
6904 case R_ARM_MOVW_ABS_NC
:
6905 case R_ARM_MOVT_ABS
:
6906 case R_ARM_MOVW_PREL_NC
:
6907 case R_ARM_MOVT_PREL
:
6908 case R_ARM_THM_MOVW_ABS_NC
:
6909 case R_ARM_THM_MOVT_ABS
:
6910 case R_ARM_THM_MOVW_PREL_NC
:
6911 case R_ARM_THM_MOVT_PREL
:
6912 /* Should the interworking branches be here also? */
6916 struct elf32_arm_link_hash_entry
*eh
;
6917 struct elf32_arm_relocs_copied
**pp
;
6918 struct elf32_arm_relocs_copied
*p
;
6920 eh
= (struct elf32_arm_link_hash_entry
*) h
;
6922 if (h
->plt
.refcount
> 0)
6924 h
->plt
.refcount
-= 1;
6925 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_THM_CALL
)
6926 eh
->plt_thumb_refcount
--;
6929 if (r_type
== R_ARM_ABS32
6930 || r_type
== R_ARM_REL32
6931 || r_type
== R_ARM_ABS32_NOI
6932 || r_type
== R_ARM_REL32_NOI
)
6934 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
6936 if (p
->section
== sec
)
6939 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
6940 || ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32_NOI
)
6958 /* Look through the relocs for a section during the first phase. */
6961 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
6962 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6964 Elf_Internal_Shdr
*symtab_hdr
;
6965 struct elf_link_hash_entry
**sym_hashes
;
6966 struct elf_link_hash_entry
**sym_hashes_end
;
6967 const Elf_Internal_Rela
*rel
;
6968 const Elf_Internal_Rela
*rel_end
;
6971 bfd_vma
*local_got_offsets
;
6972 struct elf32_arm_link_hash_table
*htab
;
6974 if (info
->relocatable
)
6977 htab
= elf32_arm_hash_table (info
);
6980 /* Create dynamic sections for relocatable executables so that we can
6981 copy relocations. */
6982 if (htab
->root
.is_relocatable_executable
6983 && ! htab
->root
.dynamic_sections_created
)
6985 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
6989 dynobj
= elf_hash_table (info
)->dynobj
;
6990 local_got_offsets
= elf_local_got_offsets (abfd
);
6992 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
6993 sym_hashes
= elf_sym_hashes (abfd
);
6994 sym_hashes_end
= sym_hashes
6995 + symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
);
6997 if (!elf_bad_symtab (abfd
))
6998 sym_hashes_end
-= symtab_hdr
->sh_info
;
7000 rel_end
= relocs
+ sec
->reloc_count
;
7001 for (rel
= relocs
; rel
< rel_end
; rel
++)
7003 struct elf_link_hash_entry
*h
;
7004 struct elf32_arm_link_hash_entry
*eh
;
7005 unsigned long r_symndx
;
7008 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7009 r_type
= ELF32_R_TYPE (rel
->r_info
);
7010 r_type
= arm_real_reloc_type (htab
, r_type
);
7012 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7014 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
7019 if (r_symndx
< symtab_hdr
->sh_info
)
7023 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7024 while (h
->root
.type
== bfd_link_hash_indirect
7025 || h
->root
.type
== bfd_link_hash_warning
)
7026 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7029 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7034 case R_ARM_GOT_PREL
:
7035 case R_ARM_TLS_GD32
:
7036 case R_ARM_TLS_IE32
:
7037 /* This symbol requires a global offset table entry. */
7039 int tls_type
, old_tls_type
;
7043 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
7044 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
7045 default: tls_type
= GOT_NORMAL
; break;
7051 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
7055 bfd_signed_vma
*local_got_refcounts
;
7057 /* This is a global offset table entry for a local symbol. */
7058 local_got_refcounts
= elf_local_got_refcounts (abfd
);
7059 if (local_got_refcounts
== NULL
)
7063 size
= symtab_hdr
->sh_info
;
7064 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
7065 local_got_refcounts
= bfd_zalloc (abfd
, size
);
7066 if (local_got_refcounts
== NULL
)
7068 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
7069 elf32_arm_local_got_tls_type (abfd
)
7070 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
7072 local_got_refcounts
[r_symndx
] += 1;
7073 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
7076 /* We will already have issued an error message if there is a
7077 TLS / non-TLS mismatch, based on the symbol type. We don't
7078 support any linker relaxations. So just combine any TLS
7080 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
7081 && tls_type
!= GOT_NORMAL
)
7082 tls_type
|= old_tls_type
;
7084 if (old_tls_type
!= tls_type
)
7087 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
7089 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
7094 case R_ARM_TLS_LDM32
:
7095 if (r_type
== R_ARM_TLS_LDM32
)
7096 htab
->tls_ldm_got
.refcount
++;
7099 case R_ARM_GOTOFF32
:
7101 if (htab
->sgot
== NULL
)
7103 if (htab
->root
.dynobj
== NULL
)
7104 htab
->root
.dynobj
= abfd
;
7105 if (!create_got_section (htab
->root
.dynobj
, info
))
7111 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
7112 ldr __GOTT_INDEX__ offsets. */
7113 if (!htab
->vxworks_p
)
7118 case R_ARM_ABS32_NOI
:
7120 case R_ARM_REL32_NOI
:
7126 case R_ARM_THM_CALL
:
7127 case R_ARM_MOVW_ABS_NC
:
7128 case R_ARM_MOVT_ABS
:
7129 case R_ARM_MOVW_PREL_NC
:
7130 case R_ARM_MOVT_PREL
:
7131 case R_ARM_THM_MOVW_ABS_NC
:
7132 case R_ARM_THM_MOVT_ABS
:
7133 case R_ARM_THM_MOVW_PREL_NC
:
7134 case R_ARM_THM_MOVT_PREL
:
7135 /* Should the interworking branches be listed here? */
7138 /* If this reloc is in a read-only section, we might
7139 need a copy reloc. We can't check reliably at this
7140 stage whether the section is read-only, as input
7141 sections have not yet been mapped to output sections.
7142 Tentatively set the flag for now, and correct in
7143 adjust_dynamic_symbol. */
7147 /* We may need a .plt entry if the function this reloc
7148 refers to is in a different object. We can't tell for
7149 sure yet, because something later might force the
7151 if (r_type
!= R_ARM_ABS32
7152 && r_type
!= R_ARM_REL32
7153 && r_type
!= R_ARM_ABS32_NOI
7154 && r_type
!= R_ARM_REL32_NOI
)
7157 /* If we create a PLT entry, this relocation will reference
7158 it, even if it's an ABS32 relocation. */
7159 h
->plt
.refcount
+= 1;
7161 if (r_type
== R_ARM_THM_CALL
)
7162 eh
->plt_thumb_refcount
+= 1;
7165 /* If we are creating a shared library or relocatable executable,
7166 and this is a reloc against a global symbol, or a non PC
7167 relative reloc against a local symbol, then we need to copy
7168 the reloc into the shared library. However, if we are linking
7169 with -Bsymbolic, we do not need to copy a reloc against a
7170 global symbol which is defined in an object we are
7171 including in the link (i.e., DEF_REGULAR is set). At
7172 this point we have not seen all the input files, so it is
7173 possible that DEF_REGULAR is not set now but will be set
7174 later (it is never cleared). We account for that
7175 possibility below by storing information in the
7176 relocs_copied field of the hash table entry. */
7177 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
7178 && (sec
->flags
& SEC_ALLOC
) != 0
7179 && ((r_type
== R_ARM_ABS32
|| r_type
== R_ARM_ABS32_NOI
)
7180 || (h
!= NULL
&& ! h
->needs_plt
7181 && (! info
->symbolic
|| ! h
->def_regular
))))
7183 struct elf32_arm_relocs_copied
*p
, **head
;
7185 /* When creating a shared object, we must copy these
7186 reloc types into the output file. We create a reloc
7187 section in dynobj and make room for this reloc. */
7192 name
= (bfd_elf_string_from_elf_section
7194 elf_elfheader (abfd
)->e_shstrndx
,
7195 elf_section_data (sec
)->rel_hdr
.sh_name
));
7199 BFD_ASSERT (reloc_section_p (htab
, name
, sec
));
7201 sreloc
= bfd_get_section_by_name (dynobj
, name
);
7206 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
7207 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
7208 if ((sec
->flags
& SEC_ALLOC
) != 0
7209 /* BPABI objects never have dynamic
7210 relocations mapped. */
7211 && !htab
->symbian_p
)
7212 flags
|= SEC_ALLOC
| SEC_LOAD
;
7213 sreloc
= bfd_make_section_with_flags (dynobj
,
7217 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
7221 elf_section_data (sec
)->sreloc
= sreloc
;
7224 /* If this is a global symbol, we count the number of
7225 relocations we need for this symbol. */
7228 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
7232 /* Track dynamic relocs needed for local syms too.
7233 We really need local syms available to do this
7239 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
7244 vpp
= &elf_section_data (s
)->local_dynrel
;
7245 head
= (struct elf32_arm_relocs_copied
**) vpp
;
7249 if (p
== NULL
|| p
->section
!= sec
)
7251 bfd_size_type amt
= sizeof *p
;
7253 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
7263 if (r_type
== R_ARM_REL32
|| r_type
== R_ARM_REL32_NOI
)
7269 /* This relocation describes the C++ object vtable hierarchy.
7270 Reconstruct it for later use during GC. */
7271 case R_ARM_GNU_VTINHERIT
:
7272 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
7276 /* This relocation describes which C++ vtable entries are actually
7277 used. Record for later use during GC. */
7278 case R_ARM_GNU_VTENTRY
:
7279 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
7288 /* Treat mapping symbols as special target symbols. */
7291 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
7293 return bfd_is_arm_special_symbol_name (sym
->name
,
7294 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
7297 /* This is a copy of elf_find_function() from elf.c except that
7298 ARM mapping symbols are ignored when looking for function names
7299 and STT_ARM_TFUNC is considered to a function type. */
7302 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
7306 const char ** filename_ptr
,
7307 const char ** functionname_ptr
)
7309 const char * filename
= NULL
;
7310 asymbol
* func
= NULL
;
7311 bfd_vma low_func
= 0;
7314 for (p
= symbols
; *p
!= NULL
; p
++)
7318 q
= (elf_symbol_type
*) *p
;
7320 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
7325 filename
= bfd_asymbol_name (&q
->symbol
);
7330 /* Skip mapping symbols. */
7331 if ((q
->symbol
.flags
& BSF_LOCAL
)
7332 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
7333 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
7336 if (bfd_get_section (&q
->symbol
) == section
7337 && q
->symbol
.value
>= low_func
7338 && q
->symbol
.value
<= offset
)
7340 func
= (asymbol
*) q
;
7341 low_func
= q
->symbol
.value
;
7351 *filename_ptr
= filename
;
7352 if (functionname_ptr
)
7353 *functionname_ptr
= bfd_asymbol_name (func
);
7359 /* Find the nearest line to a particular section and offset, for error
7360 reporting. This code is a duplicate of the code in elf.c, except
7361 that it uses arm_elf_find_function. */
7364 elf32_arm_find_nearest_line (bfd
* abfd
,
7368 const char ** filename_ptr
,
7369 const char ** functionname_ptr
,
7370 unsigned int * line_ptr
)
7372 bfd_boolean found
= FALSE
;
7374 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
7376 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
7377 filename_ptr
, functionname_ptr
,
7379 & elf_tdata (abfd
)->dwarf2_find_line_info
))
7381 if (!*functionname_ptr
)
7382 arm_elf_find_function (abfd
, section
, symbols
, offset
,
7383 *filename_ptr
? NULL
: filename_ptr
,
7389 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
7390 & found
, filename_ptr
,
7391 functionname_ptr
, line_ptr
,
7392 & elf_tdata (abfd
)->line_info
))
7395 if (found
&& (*functionname_ptr
|| *line_ptr
))
7398 if (symbols
== NULL
)
7401 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
7402 filename_ptr
, functionname_ptr
))
7410 elf32_arm_find_inliner_info (bfd
* abfd
,
7411 const char ** filename_ptr
,
7412 const char ** functionname_ptr
,
7413 unsigned int * line_ptr
)
7416 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
7417 functionname_ptr
, line_ptr
,
7418 & elf_tdata (abfd
)->dwarf2_find_line_info
);
7422 /* Adjust a symbol defined by a dynamic object and referenced by a
7423 regular object. The current definition is in some section of the
7424 dynamic object, but we're not including those sections. We have to
7425 change the definition to something the rest of the link can
7429 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
7430 struct elf_link_hash_entry
* h
)
7434 unsigned int power_of_two
;
7435 struct elf32_arm_link_hash_entry
* eh
;
7436 struct elf32_arm_link_hash_table
*globals
;
7438 globals
= elf32_arm_hash_table (info
);
7439 dynobj
= elf_hash_table (info
)->dynobj
;
7441 /* Make sure we know what is going on here. */
7442 BFD_ASSERT (dynobj
!= NULL
7444 || h
->u
.weakdef
!= NULL
7447 && !h
->def_regular
)));
7449 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7451 /* If this is a function, put it in the procedure linkage table. We
7452 will fill in the contents of the procedure linkage table later,
7453 when we know the address of the .got section. */
7454 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
7457 if (h
->plt
.refcount
<= 0
7458 || SYMBOL_CALLS_LOCAL (info
, h
)
7459 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7460 && h
->root
.type
== bfd_link_hash_undefweak
))
7462 /* This case can occur if we saw a PLT32 reloc in an input
7463 file, but the symbol was never referred to by a dynamic
7464 object, or if all references were garbage collected. In
7465 such a case, we don't actually need to build a procedure
7466 linkage table, and we can just do a PC24 reloc instead. */
7467 h
->plt
.offset
= (bfd_vma
) -1;
7468 eh
->plt_thumb_refcount
= 0;
7476 /* It's possible that we incorrectly decided a .plt reloc was
7477 needed for an R_ARM_PC24 or similar reloc to a non-function sym
7478 in check_relocs. We can't decide accurately between function
7479 and non-function syms in check-relocs; Objects loaded later in
7480 the link may change h->type. So fix it now. */
7481 h
->plt
.offset
= (bfd_vma
) -1;
7482 eh
->plt_thumb_refcount
= 0;
7485 /* If this is a weak symbol, and there is a real definition, the
7486 processor independent code will have arranged for us to see the
7487 real definition first, and we can just use the same value. */
7488 if (h
->u
.weakdef
!= NULL
)
7490 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7491 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7492 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7493 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7497 /* If there are no non-GOT references, we do not need a copy
7499 if (!h
->non_got_ref
)
7502 /* This is a reference to a symbol defined by a dynamic object which
7503 is not a function. */
7505 /* If we are creating a shared library, we must presume that the
7506 only references to the symbol are via the global offset table.
7507 For such cases we need not do anything here; the relocations will
7508 be handled correctly by relocate_section. Relocatable executables
7509 can reference data in shared objects directly, so we don't need to
7510 do anything here. */
7511 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
7516 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
7517 h
->root
.root
.string
);
7521 /* We must allocate the symbol in our .dynbss section, which will
7522 become part of the .bss section of the executable. There will be
7523 an entry for this symbol in the .dynsym section. The dynamic
7524 object will contain position independent code, so all references
7525 from the dynamic object to this symbol will go through the global
7526 offset table. The dynamic linker will use the .dynsym entry to
7527 determine the address it must put in the global offset table, so
7528 both the dynamic object and the regular object will refer to the
7529 same memory location for the variable. */
7530 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
7531 BFD_ASSERT (s
!= NULL
);
7533 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
7534 copy the initial value out of the dynamic object and into the
7535 runtime process image. We need to remember the offset into the
7536 .rel(a).bss section we are going to use. */
7537 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
7541 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
7542 BFD_ASSERT (srel
!= NULL
);
7543 srel
->size
+= RELOC_SIZE (globals
);
7547 /* We need to figure out the alignment required for this symbol. I
7548 have no idea how ELF linkers handle this. */
7549 power_of_two
= bfd_log2 (h
->size
);
7550 if (power_of_two
> 3)
7553 /* Apply the required alignment. */
7554 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
7555 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
7557 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
7561 /* Define the symbol as being at this point in the section. */
7562 h
->root
.u
.def
.section
= s
;
7563 h
->root
.u
.def
.value
= s
->size
;
7565 /* Increment the section size to make room for the symbol. */
7571 /* Allocate space in .plt, .got and associated reloc sections for
7575 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
7577 struct bfd_link_info
*info
;
7578 struct elf32_arm_link_hash_table
*htab
;
7579 struct elf32_arm_link_hash_entry
*eh
;
7580 struct elf32_arm_relocs_copied
*p
;
7582 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7584 if (h
->root
.type
== bfd_link_hash_indirect
)
7587 if (h
->root
.type
== bfd_link_hash_warning
)
7588 /* When warning symbols are created, they **replace** the "real"
7589 entry in the hash table, thus we never get to see the real
7590 symbol in a hash traversal. So look at it now. */
7591 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7593 info
= (struct bfd_link_info
*) inf
;
7594 htab
= elf32_arm_hash_table (info
);
7596 if (htab
->root
.dynamic_sections_created
7597 && h
->plt
.refcount
> 0)
7599 /* Make sure this symbol is output as a dynamic symbol.
7600 Undefined weak syms won't yet be marked as dynamic. */
7601 if (h
->dynindx
== -1
7602 && !h
->forced_local
)
7604 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7609 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
7611 asection
*s
= htab
->splt
;
7613 /* If this is the first .plt entry, make room for the special
7616 s
->size
+= htab
->plt_header_size
;
7618 h
->plt
.offset
= s
->size
;
7620 /* If we will insert a Thumb trampoline before this PLT, leave room
7622 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
7624 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
7625 s
->size
+= PLT_THUMB_STUB_SIZE
;
7628 /* If this symbol is not defined in a regular file, and we are
7629 not generating a shared library, then set the symbol to this
7630 location in the .plt. This is required to make function
7631 pointers compare as equal between the normal executable and
7632 the shared library. */
7636 h
->root
.u
.def
.section
= s
;
7637 h
->root
.u
.def
.value
= h
->plt
.offset
;
7639 /* Make sure the function is not marked as Thumb, in case
7640 it is the target of an ABS32 relocation, which will
7641 point to the PLT entry. */
7642 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
7643 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
7646 /* Make room for this entry. */
7647 s
->size
+= htab
->plt_entry_size
;
7649 if (!htab
->symbian_p
)
7651 /* We also need to make an entry in the .got.plt section, which
7652 will be placed in the .got section by the linker script. */
7653 eh
->plt_got_offset
= htab
->sgotplt
->size
;
7654 htab
->sgotplt
->size
+= 4;
7657 /* We also need to make an entry in the .rel(a).plt section. */
7658 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
7660 /* VxWorks executables have a second set of relocations for
7661 each PLT entry. They go in a separate relocation section,
7662 which is processed by the kernel loader. */
7663 if (htab
->vxworks_p
&& !info
->shared
)
7665 /* There is a relocation for the initial PLT entry:
7666 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
7667 if (h
->plt
.offset
== htab
->plt_header_size
)
7668 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
7670 /* There are two extra relocations for each subsequent
7671 PLT entry: an R_ARM_32 relocation for the GOT entry,
7672 and an R_ARM_32 relocation for the PLT entry. */
7673 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
7678 h
->plt
.offset
= (bfd_vma
) -1;
7684 h
->plt
.offset
= (bfd_vma
) -1;
7688 if (h
->got
.refcount
> 0)
7692 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
7695 /* Make sure this symbol is output as a dynamic symbol.
7696 Undefined weak syms won't yet be marked as dynamic. */
7697 if (h
->dynindx
== -1
7698 && !h
->forced_local
)
7700 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7704 if (!htab
->symbian_p
)
7707 h
->got
.offset
= s
->size
;
7709 if (tls_type
== GOT_UNKNOWN
)
7712 if (tls_type
== GOT_NORMAL
)
7713 /* Non-TLS symbols need one GOT slot. */
7717 if (tls_type
& GOT_TLS_GD
)
7718 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
7720 if (tls_type
& GOT_TLS_IE
)
7721 /* R_ARM_TLS_IE32 needs one GOT slot. */
7725 dyn
= htab
->root
.dynamic_sections_created
;
7728 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
7730 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
7733 if (tls_type
!= GOT_NORMAL
7734 && (info
->shared
|| indx
!= 0)
7735 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7736 || h
->root
.type
!= bfd_link_hash_undefweak
))
7738 if (tls_type
& GOT_TLS_IE
)
7739 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7741 if (tls_type
& GOT_TLS_GD
)
7742 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7744 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
7745 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7747 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7748 || h
->root
.type
!= bfd_link_hash_undefweak
)
7750 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
7751 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
7755 h
->got
.offset
= (bfd_vma
) -1;
7757 /* Allocate stubs for exported Thumb functions on v4t. */
7758 if (!htab
->use_blx
&& h
->dynindx
!= -1
7759 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
7760 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
7762 struct elf_link_hash_entry
* th
;
7763 struct bfd_link_hash_entry
* bh
;
7764 struct elf_link_hash_entry
* myh
;
7768 /* Create a new symbol to regist the real location of the function. */
7769 s
= h
->root
.u
.def
.section
;
7770 sprintf(name
, "__real_%s", h
->root
.root
.string
);
7771 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
7772 name
, BSF_GLOBAL
, s
,
7773 h
->root
.u
.def
.value
,
7774 NULL
, TRUE
, FALSE
, &bh
);
7776 myh
= (struct elf_link_hash_entry
*) bh
;
7777 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
7778 myh
->forced_local
= 1;
7779 eh
->export_glue
= myh
;
7780 th
= record_arm_to_thumb_glue (info
, h
);
7781 /* Point the symbol at the stub. */
7782 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
7783 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
7784 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
7787 if (eh
->relocs_copied
== NULL
)
7790 /* In the shared -Bsymbolic case, discard space allocated for
7791 dynamic pc-relative relocs against symbols which turn out to be
7792 defined in regular objects. For the normal shared case, discard
7793 space for pc-relative relocs that have become local due to symbol
7794 visibility changes. */
7796 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
7798 /* The only reloc thats uses pc_count are R_ARM_REL32 and
7799 R_ARM_REL32_NOI, which will appear on something like
7800 ".long foo - .". We want calls to protected symbols to resolve
7801 directly to the function rather than going via the plt. If people
7802 want function pointer comparisons to work as expected then they
7803 should avoid writing assembly like ".long foo - .". */
7804 if (SYMBOL_CALLS_LOCAL (info
, h
))
7806 struct elf32_arm_relocs_copied
**pp
;
7808 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
7810 p
->count
-= p
->pc_count
;
7819 /* Also discard relocs on undefined weak syms with non-default
7821 if (eh
->relocs_copied
!= NULL
7822 && h
->root
.type
== bfd_link_hash_undefweak
)
7824 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
7825 eh
->relocs_copied
= NULL
;
7827 /* Make sure undefined weak symbols are output as a dynamic
7829 else if (h
->dynindx
== -1
7830 && !h
->forced_local
)
7832 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7837 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
7838 && h
->root
.type
== bfd_link_hash_new
)
7840 /* Output absolute symbols so that we can create relocations
7841 against them. For normal symbols we output a relocation
7842 against the section that contains them. */
7843 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7850 /* For the non-shared case, discard space for relocs against
7851 symbols which turn out to need copy relocs or are not
7857 || (htab
->root
.dynamic_sections_created
7858 && (h
->root
.type
== bfd_link_hash_undefweak
7859 || h
->root
.type
== bfd_link_hash_undefined
))))
7861 /* Make sure this symbol is output as a dynamic symbol.
7862 Undefined weak syms won't yet be marked as dynamic. */
7863 if (h
->dynindx
== -1
7864 && !h
->forced_local
)
7866 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7870 /* If that succeeded, we know we'll be keeping all the
7872 if (h
->dynindx
!= -1)
7876 eh
->relocs_copied
= NULL
;
7881 /* Finally, allocate space. */
7882 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
7884 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
7885 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
7891 /* Find any dynamic relocs that apply to read-only sections. */
7894 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
*h
, PTR inf
)
7896 struct elf32_arm_link_hash_entry
*eh
;
7897 struct elf32_arm_relocs_copied
*p
;
7899 if (h
->root
.type
== bfd_link_hash_warning
)
7900 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7902 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7903 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
7905 asection
*s
= p
->section
;
7907 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7909 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
7911 info
->flags
|= DF_TEXTREL
;
7913 /* Not an error, just cut short the traversal. */
7920 /* Set the sizes of the dynamic sections. */
7923 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
7924 struct bfd_link_info
* info
)
7931 struct elf32_arm_link_hash_table
*htab
;
7933 htab
= elf32_arm_hash_table (info
);
7934 dynobj
= elf_hash_table (info
)->dynobj
;
7935 BFD_ASSERT (dynobj
!= NULL
);
7936 check_use_blx (htab
);
7938 if (elf_hash_table (info
)->dynamic_sections_created
)
7940 /* Set the contents of the .interp section to the interpreter. */
7941 if (info
->executable
)
7943 s
= bfd_get_section_by_name (dynobj
, ".interp");
7944 BFD_ASSERT (s
!= NULL
);
7945 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
7946 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
7950 /* Set up .got offsets for local syms, and space for local dynamic
7952 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7954 bfd_signed_vma
*local_got
;
7955 bfd_signed_vma
*end_local_got
;
7956 char *local_tls_type
;
7957 bfd_size_type locsymcount
;
7958 Elf_Internal_Shdr
*symtab_hdr
;
7961 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
7964 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
7966 struct elf32_arm_relocs_copied
*p
;
7968 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
7970 if (!bfd_is_abs_section (p
->section
)
7971 && bfd_is_abs_section (p
->section
->output_section
))
7973 /* Input section has been discarded, either because
7974 it is a copy of a linkonce section or due to
7975 linker script /DISCARD/, so we'll be discarding
7978 else if (p
->count
!= 0)
7980 srel
= elf_section_data (p
->section
)->sreloc
;
7981 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
7982 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
7983 info
->flags
|= DF_TEXTREL
;
7988 local_got
= elf_local_got_refcounts (ibfd
);
7992 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7993 locsymcount
= symtab_hdr
->sh_info
;
7994 end_local_got
= local_got
+ locsymcount
;
7995 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
7997 srel
= htab
->srelgot
;
7998 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
8002 *local_got
= s
->size
;
8003 if (*local_tls_type
& GOT_TLS_GD
)
8004 /* TLS_GD relocs need an 8-byte structure in the GOT. */
8006 if (*local_tls_type
& GOT_TLS_IE
)
8008 if (*local_tls_type
== GOT_NORMAL
)
8011 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
8012 srel
->size
+= RELOC_SIZE (htab
);
8015 *local_got
= (bfd_vma
) -1;
8019 if (htab
->tls_ldm_got
.refcount
> 0)
8021 /* Allocate two GOT entries and one dynamic relocation (if necessary)
8022 for R_ARM_TLS_LDM32 relocations. */
8023 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
8024 htab
->sgot
->size
+= 8;
8026 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8029 htab
->tls_ldm_got
.offset
= -1;
8031 /* Allocate global sym .plt and .got entries, and space for global
8032 sym dynamic relocs. */
8033 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
8035 /* The check_relocs and adjust_dynamic_symbol entry points have
8036 determined the sizes of the various dynamic sections. Allocate
8040 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8044 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8047 /* It's OK to base decisions on the section name, because none
8048 of the dynobj section names depend upon the input files. */
8049 name
= bfd_get_section_name (dynobj
, s
);
8051 if (strcmp (name
, ".plt") == 0)
8053 /* Remember whether there is a PLT. */
8056 else if (CONST_STRNEQ (name
, ".rel"))
8060 /* Remember whether there are any reloc sections other
8061 than .rel(a).plt and .rela.plt.unloaded. */
8062 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
8065 /* We use the reloc_count field as a counter if we need
8066 to copy relocs into the output file. */
8070 else if (! CONST_STRNEQ (name
, ".got")
8071 && strcmp (name
, ".dynbss") != 0)
8073 /* It's not one of our sections, so don't allocate space. */
8079 /* If we don't need this section, strip it from the
8080 output file. This is mostly to handle .rel(a).bss and
8081 .rel(a).plt. We must create both sections in
8082 create_dynamic_sections, because they must be created
8083 before the linker maps input sections to output
8084 sections. The linker does that before
8085 adjust_dynamic_symbol is called, and it is that
8086 function which decides whether anything needs to go
8087 into these sections. */
8088 s
->flags
|= SEC_EXCLUDE
;
8092 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8095 /* Allocate memory for the section contents. */
8096 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
8097 if (s
->contents
== NULL
)
8101 if (elf_hash_table (info
)->dynamic_sections_created
)
8103 /* Add some entries to the .dynamic section. We fill in the
8104 values later, in elf32_arm_finish_dynamic_sections, but we
8105 must add the entries now so that we get the correct size for
8106 the .dynamic section. The DT_DEBUG entry is filled in by the
8107 dynamic linker and used by the debugger. */
8108 #define add_dynamic_entry(TAG, VAL) \
8109 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8111 if (info
->executable
)
8113 if (!add_dynamic_entry (DT_DEBUG
, 0))
8119 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
8120 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8121 || !add_dynamic_entry (DT_PLTREL
,
8122 htab
->use_rel
? DT_REL
: DT_RELA
)
8123 || !add_dynamic_entry (DT_JMPREL
, 0))
8131 if (!add_dynamic_entry (DT_REL
, 0)
8132 || !add_dynamic_entry (DT_RELSZ
, 0)
8133 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
8138 if (!add_dynamic_entry (DT_RELA
, 0)
8139 || !add_dynamic_entry (DT_RELASZ
, 0)
8140 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
8145 /* If any dynamic relocs apply to a read-only section,
8146 then we need a DT_TEXTREL entry. */
8147 if ((info
->flags
& DF_TEXTREL
) == 0)
8148 elf_link_hash_traverse (&htab
->root
, elf32_arm_readonly_dynrelocs
,
8151 if ((info
->flags
& DF_TEXTREL
) != 0)
8153 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8157 #undef add_dynamic_entry
8162 /* Finish up dynamic symbol handling. We set the contents of various
8163 dynamic sections here. */
8166 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
, struct bfd_link_info
* info
,
8167 struct elf_link_hash_entry
* h
, Elf_Internal_Sym
* sym
)
8170 struct elf32_arm_link_hash_table
*htab
;
8171 struct elf32_arm_link_hash_entry
*eh
;
8173 dynobj
= elf_hash_table (info
)->dynobj
;
8174 htab
= elf32_arm_hash_table (info
);
8175 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8177 if (h
->plt
.offset
!= (bfd_vma
) -1)
8183 Elf_Internal_Rela rel
;
8185 /* This symbol has an entry in the procedure linkage table. Set
8188 BFD_ASSERT (h
->dynindx
!= -1);
8190 splt
= bfd_get_section_by_name (dynobj
, ".plt");
8191 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
8192 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
8194 /* Fill in the entry in the procedure linkage table. */
8195 if (htab
->symbian_p
)
8197 put_arm_insn (htab
, output_bfd
,
8198 elf32_arm_symbian_plt_entry
[0],
8199 splt
->contents
+ h
->plt
.offset
);
8200 bfd_put_32 (output_bfd
,
8201 elf32_arm_symbian_plt_entry
[1],
8202 splt
->contents
+ h
->plt
.offset
+ 4);
8204 /* Fill in the entry in the .rel.plt section. */
8205 rel
.r_offset
= (splt
->output_section
->vma
8206 + splt
->output_offset
8207 + h
->plt
.offset
+ 4);
8208 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
8210 /* Get the index in the procedure linkage table which
8211 corresponds to this symbol. This is the index of this symbol
8212 in all the symbols for which we are making plt entries. The
8213 first entry in the procedure linkage table is reserved. */
8214 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
8215 / htab
->plt_entry_size
);
8219 bfd_vma got_offset
, got_address
, plt_address
;
8220 bfd_vma got_displacement
;
8224 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
8225 BFD_ASSERT (sgot
!= NULL
);
8227 /* Get the offset into the .got.plt table of the entry that
8228 corresponds to this function. */
8229 got_offset
= eh
->plt_got_offset
;
8231 /* Get the index in the procedure linkage table which
8232 corresponds to this symbol. This is the index of this symbol
8233 in all the symbols for which we are making plt entries. The
8234 first three entries in .got.plt are reserved; after that
8235 symbols appear in the same order as in .plt. */
8236 plt_index
= (got_offset
- 12) / 4;
8238 /* Calculate the address of the GOT entry. */
8239 got_address
= (sgot
->output_section
->vma
8240 + sgot
->output_offset
8243 /* ...and the address of the PLT entry. */
8244 plt_address
= (splt
->output_section
->vma
8245 + splt
->output_offset
8248 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
8249 if (htab
->vxworks_p
&& info
->shared
)
8254 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
8256 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
8258 val
|= got_address
- sgot
->output_section
->vma
;
8260 val
|= plt_index
* RELOC_SIZE (htab
);
8261 if (i
== 2 || i
== 5)
8262 bfd_put_32 (output_bfd
, val
, ptr
);
8264 put_arm_insn (htab
, output_bfd
, val
, ptr
);
8267 else if (htab
->vxworks_p
)
8272 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++)
8274 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
8278 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
8280 val
|= plt_index
* RELOC_SIZE (htab
);
8281 if (i
== 2 || i
== 5)
8282 bfd_put_32 (output_bfd
, val
, ptr
);
8284 put_arm_insn (htab
, output_bfd
, val
, ptr
);
8287 loc
= (htab
->srelplt2
->contents
8288 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
8290 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
8291 referencing the GOT for this PLT entry. */
8292 rel
.r_offset
= plt_address
+ 8;
8293 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
8294 rel
.r_addend
= got_offset
;
8295 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8296 loc
+= RELOC_SIZE (htab
);
8298 /* Create the R_ARM_ABS32 relocation referencing the
8299 beginning of the PLT for this GOT entry. */
8300 rel
.r_offset
= got_address
;
8301 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
8303 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8307 /* Calculate the displacement between the PLT slot and the
8308 entry in the GOT. The eight-byte offset accounts for the
8309 value produced by adding to pc in the first instruction
8311 got_displacement
= got_address
- (plt_address
+ 8);
8313 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
8315 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
8317 put_thumb_insn (htab
, output_bfd
,
8318 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
8319 put_thumb_insn (htab
, output_bfd
,
8320 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
8323 put_arm_insn (htab
, output_bfd
,
8324 elf32_arm_plt_entry
[0]
8325 | ((got_displacement
& 0x0ff00000) >> 20),
8327 put_arm_insn (htab
, output_bfd
,
8328 elf32_arm_plt_entry
[1]
8329 | ((got_displacement
& 0x000ff000) >> 12),
8331 put_arm_insn (htab
, output_bfd
,
8332 elf32_arm_plt_entry
[2]
8333 | (got_displacement
& 0x00000fff),
8335 #ifdef FOUR_WORD_PLT
8336 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
8340 /* Fill in the entry in the global offset table. */
8341 bfd_put_32 (output_bfd
,
8342 (splt
->output_section
->vma
8343 + splt
->output_offset
),
8344 sgot
->contents
+ got_offset
);
8346 /* Fill in the entry in the .rel(a).plt section. */
8348 rel
.r_offset
= got_address
;
8349 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
8352 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
8353 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8355 if (!h
->def_regular
)
8357 /* Mark the symbol as undefined, rather than as defined in
8358 the .plt section. Leave the value alone. */
8359 sym
->st_shndx
= SHN_UNDEF
;
8360 /* If the symbol is weak, we do need to clear the value.
8361 Otherwise, the PLT entry would provide a definition for
8362 the symbol even if the symbol wasn't defined anywhere,
8363 and so the symbol would never be NULL. */
8364 if (!h
->ref_regular_nonweak
)
8369 if (h
->got
.offset
!= (bfd_vma
) -1
8370 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
8371 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
8375 Elf_Internal_Rela rel
;
8379 /* This symbol has an entry in the global offset table. Set it
8381 sgot
= bfd_get_section_by_name (dynobj
, ".got");
8382 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
8383 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
8385 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
8387 rel
.r_offset
= (sgot
->output_section
->vma
8388 + sgot
->output_offset
8391 /* If this is a static link, or it is a -Bsymbolic link and the
8392 symbol is defined locally or was forced to be local because
8393 of a version file, we just want to emit a RELATIVE reloc.
8394 The entry in the global offset table will already have been
8395 initialized in the relocate_section function. */
8397 && SYMBOL_REFERENCES_LOCAL (info
, h
))
8399 BFD_ASSERT((h
->got
.offset
& 1) != 0);
8400 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
8403 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
8404 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
8409 BFD_ASSERT((h
->got
.offset
& 1) == 0);
8410 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
8411 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
8414 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
8415 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8421 Elf_Internal_Rela rel
;
8424 /* This symbol needs a copy reloc. Set it up. */
8425 BFD_ASSERT (h
->dynindx
!= -1
8426 && (h
->root
.type
== bfd_link_hash_defined
8427 || h
->root
.type
== bfd_link_hash_defweak
));
8429 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
8430 RELOC_SECTION (htab
, ".bss"));
8431 BFD_ASSERT (s
!= NULL
);
8434 rel
.r_offset
= (h
->root
.u
.def
.value
8435 + h
->root
.u
.def
.section
->output_section
->vma
8436 + h
->root
.u
.def
.section
->output_offset
);
8437 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
8438 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
8439 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
8442 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
8443 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
8444 to the ".got" section. */
8445 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
8446 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
8447 sym
->st_shndx
= SHN_ABS
;
8452 /* Finish up the dynamic sections. */
8455 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
8461 dynobj
= elf_hash_table (info
)->dynobj
;
8463 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
8464 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
8465 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
8467 if (elf_hash_table (info
)->dynamic_sections_created
)
8470 Elf32_External_Dyn
*dyncon
, *dynconend
;
8471 struct elf32_arm_link_hash_table
*htab
;
8473 htab
= elf32_arm_hash_table (info
);
8474 splt
= bfd_get_section_by_name (dynobj
, ".plt");
8475 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
8477 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
8478 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
8480 for (; dyncon
< dynconend
; dyncon
++)
8482 Elf_Internal_Dyn dyn
;
8486 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
8497 goto get_vma_if_bpabi
;
8500 goto get_vma_if_bpabi
;
8503 goto get_vma_if_bpabi
;
8505 name
= ".gnu.version";
8506 goto get_vma_if_bpabi
;
8508 name
= ".gnu.version_d";
8509 goto get_vma_if_bpabi
;
8511 name
= ".gnu.version_r";
8512 goto get_vma_if_bpabi
;
8518 name
= RELOC_SECTION (htab
, ".plt");
8520 s
= bfd_get_section_by_name (output_bfd
, name
);
8521 BFD_ASSERT (s
!= NULL
);
8522 if (!htab
->symbian_p
)
8523 dyn
.d_un
.d_ptr
= s
->vma
;
8525 /* In the BPABI, tags in the PT_DYNAMIC section point
8526 at the file offset, not the memory address, for the
8527 convenience of the post linker. */
8528 dyn
.d_un
.d_ptr
= s
->filepos
;
8529 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8533 if (htab
->symbian_p
)
8538 s
= bfd_get_section_by_name (output_bfd
,
8539 RELOC_SECTION (htab
, ".plt"));
8540 BFD_ASSERT (s
!= NULL
);
8541 dyn
.d_un
.d_val
= s
->size
;
8542 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8547 if (!htab
->symbian_p
)
8549 /* My reading of the SVR4 ABI indicates that the
8550 procedure linkage table relocs (DT_JMPREL) should be
8551 included in the overall relocs (DT_REL). This is
8552 what Solaris does. However, UnixWare can not handle
8553 that case. Therefore, we override the DT_RELSZ entry
8554 here to make it not include the JMPREL relocs. Since
8555 the linker script arranges for .rel(a).plt to follow all
8556 other relocation sections, we don't have to worry
8557 about changing the DT_REL entry. */
8558 s
= bfd_get_section_by_name (output_bfd
,
8559 RELOC_SECTION (htab
, ".plt"));
8561 dyn
.d_un
.d_val
-= s
->size
;
8562 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8569 /* In the BPABI, the DT_REL tag must point at the file
8570 offset, not the VMA, of the first relocation
8571 section. So, we use code similar to that in
8572 elflink.c, but do not check for SHF_ALLOC on the
8573 relcoation section, since relocations sections are
8574 never allocated under the BPABI. The comments above
8575 about Unixware notwithstanding, we include all of the
8576 relocations here. */
8577 if (htab
->symbian_p
)
8580 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
8581 ? SHT_REL
: SHT_RELA
);
8583 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
8585 Elf_Internal_Shdr
*hdr
8586 = elf_elfsections (output_bfd
)[i
];
8587 if (hdr
->sh_type
== type
)
8589 if (dyn
.d_tag
== DT_RELSZ
8590 || dyn
.d_tag
== DT_RELASZ
)
8591 dyn
.d_un
.d_val
+= hdr
->sh_size
;
8592 else if ((ufile_ptr
) hdr
->sh_offset
8593 <= dyn
.d_un
.d_val
- 1)
8594 dyn
.d_un
.d_val
= hdr
->sh_offset
;
8597 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8601 /* Set the bottom bit of DT_INIT/FINI if the
8602 corresponding function is Thumb. */
8604 name
= info
->init_function
;
8607 name
= info
->fini_function
;
8609 /* If it wasn't set by elf_bfd_final_link
8610 then there is nothing to adjust. */
8611 if (dyn
.d_un
.d_val
!= 0)
8613 struct elf_link_hash_entry
* eh
;
8615 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
8616 FALSE
, FALSE
, TRUE
);
8617 if (eh
!= (struct elf_link_hash_entry
*) NULL
8618 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
8620 dyn
.d_un
.d_val
|= 1;
8621 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8628 /* Fill in the first entry in the procedure linkage table. */
8629 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
8631 const bfd_vma
*plt0_entry
;
8632 bfd_vma got_address
, plt_address
, got_displacement
;
8634 /* Calculate the addresses of the GOT and PLT. */
8635 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
8636 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
8638 if (htab
->vxworks_p
)
8640 /* The VxWorks GOT is relocated by the dynamic linker.
8641 Therefore, we must emit relocations rather than simply
8642 computing the values now. */
8643 Elf_Internal_Rela rel
;
8645 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
8646 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
8647 splt
->contents
+ 0);
8648 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
8649 splt
->contents
+ 4);
8650 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
8651 splt
->contents
+ 8);
8652 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
8654 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
8655 rel
.r_offset
= plt_address
+ 12;
8656 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
8658 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
8659 htab
->srelplt2
->contents
);
8663 got_displacement
= got_address
- (plt_address
+ 16);
8665 plt0_entry
= elf32_arm_plt0_entry
;
8666 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
8667 splt
->contents
+ 0);
8668 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
8669 splt
->contents
+ 4);
8670 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
8671 splt
->contents
+ 8);
8672 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
8673 splt
->contents
+ 12);
8675 #ifdef FOUR_WORD_PLT
8676 /* The displacement value goes in the otherwise-unused
8677 last word of the second entry. */
8678 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
8680 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
8685 /* UnixWare sets the entsize of .plt to 4, although that doesn't
8686 really seem like the right value. */
8687 if (splt
->output_section
->owner
== output_bfd
)
8688 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
8690 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
8692 /* Correct the .rel(a).plt.unloaded relocations. They will have
8693 incorrect symbol indexes. */
8697 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
8698 / htab
->plt_entry_size
);
8699 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
8701 for (; num_plts
; num_plts
--)
8703 Elf_Internal_Rela rel
;
8705 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
8706 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
8707 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
8708 p
+= RELOC_SIZE (htab
);
8710 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
8711 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
8712 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
8713 p
+= RELOC_SIZE (htab
);
8718 /* Fill in the first three entries in the global offset table. */
8724 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
8726 bfd_put_32 (output_bfd
,
8727 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
8729 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
8730 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
8733 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
8740 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
8742 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
8743 struct elf32_arm_link_hash_table
*globals
;
8745 i_ehdrp
= elf_elfheader (abfd
);
8747 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
8748 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
8750 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
8751 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
8755 globals
= elf32_arm_hash_table (link_info
);
8756 if (globals
->byteswap_code
)
8757 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
8761 static enum elf_reloc_type_class
8762 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
8764 switch ((int) ELF32_R_TYPE (rela
->r_info
))
8766 case R_ARM_RELATIVE
:
8767 return reloc_class_relative
;
8768 case R_ARM_JUMP_SLOT
:
8769 return reloc_class_plt
;
8771 return reloc_class_copy
;
8773 return reloc_class_normal
;
8777 /* Set the right machine number for an Arm ELF file. */
8780 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
8782 if (hdr
->sh_type
== SHT_NOTE
)
8783 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
8789 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
8791 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
8794 /* Return TRUE if this is an unwinding table entry. */
8797 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
8799 return (CONST_STRNEQ (name
, ELF_STRING_ARM_unwind
)
8800 || CONST_STRNEQ (name
, ELF_STRING_ARM_unwind_once
));
8804 /* Set the type and flags for an ARM section. We do this by
8805 the section name, which is a hack, but ought to work. */
8808 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
8812 name
= bfd_get_section_name (abfd
, sec
);
8814 if (is_arm_elf_unwind_section_name (abfd
, name
))
8816 hdr
->sh_type
= SHT_ARM_EXIDX
;
8817 hdr
->sh_flags
|= SHF_LINK_ORDER
;
8819 else if (strcmp(name
, ".ARM.attributes") == 0)
8821 hdr
->sh_type
= SHT_ARM_ATTRIBUTES
;
8826 /* Parse an Arm EABI attributes section. */
8828 elf32_arm_parse_attributes (bfd
*abfd
, Elf_Internal_Shdr
* hdr
)
8834 contents
= bfd_malloc (hdr
->sh_size
);
8837 if (!bfd_get_section_contents (abfd
, hdr
->bfd_section
, contents
, 0,
8846 len
= hdr
->sh_size
- 1;
8850 bfd_vma section_len
;
8852 section_len
= bfd_get_32 (abfd
, p
);
8854 if (section_len
> len
)
8857 namelen
= strlen ((char *)p
) + 1;
8858 section_len
-= namelen
+ 4;
8859 if (strcmp((char *)p
, "aeabi") != 0)
8861 /* Vendor section. Ignore it. */
8862 p
+= namelen
+ section_len
;
8867 while (section_len
> 0)
8872 bfd_vma subsection_len
;
8875 tag
= read_unsigned_leb128 (abfd
, p
, &n
);
8877 subsection_len
= bfd_get_32 (abfd
, p
);
8879 if (subsection_len
> section_len
)
8880 subsection_len
= section_len
;
8881 section_len
-= subsection_len
;
8882 subsection_len
-= n
+ 4;
8883 end
= p
+ subsection_len
;
8889 bfd_boolean is_string
;
8891 tag
= read_unsigned_leb128 (abfd
, p
, &n
);
8893 if (tag
== 4 || tag
== 5)
8898 is_string
= (tag
& 1) != 0;
8899 if (tag
== Tag_compatibility
)
8901 val
= read_unsigned_leb128 (abfd
, p
, &n
);
8903 elf32_arm_add_eabi_attr_compat (abfd
, val
,
8905 p
+= strlen ((char *)p
) + 1;
8909 elf32_arm_add_eabi_attr_string (abfd
, tag
,
8911 p
+= strlen ((char *)p
) + 1;
8915 val
= read_unsigned_leb128 (abfd
, p
, &n
);
8917 elf32_arm_add_eabi_attr_int (abfd
, tag
, val
);
8923 /* Don't have anywhere convenient to attach these.
8924 Fall through for now. */
8926 /* Ignore things we don't kow about. */
8927 p
+= subsection_len
;
8938 /* Handle an ARM specific section when reading an object file. This is
8939 called when bfd_section_from_shdr finds a section with an unknown
8943 elf32_arm_section_from_shdr (bfd
*abfd
,
8944 Elf_Internal_Shdr
* hdr
,
8948 /* There ought to be a place to keep ELF backend specific flags, but
8949 at the moment there isn't one. We just keep track of the
8950 sections by their name, instead. Fortunately, the ABI gives
8951 names for all the ARM specific sections, so we will probably get
8953 switch (hdr
->sh_type
)
8956 case SHT_ARM_PREEMPTMAP
:
8957 case SHT_ARM_ATTRIBUTES
:
8964 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
8967 if (hdr
->sh_type
== SHT_ARM_ATTRIBUTES
)
8968 elf32_arm_parse_attributes(abfd
, hdr
);
8972 /* A structure used to record a list of sections, independently
8973 of the next and prev fields in the asection structure. */
8974 typedef struct section_list
8977 struct section_list
* next
;
8978 struct section_list
* prev
;
8982 /* Unfortunately we need to keep a list of sections for which
8983 an _arm_elf_section_data structure has been allocated. This
8984 is because it is possible for functions like elf32_arm_write_section
8985 to be called on a section which has had an elf_data_structure
8986 allocated for it (and so the used_by_bfd field is valid) but
8987 for which the ARM extended version of this structure - the
8988 _arm_elf_section_data structure - has not been allocated. */
8989 static section_list
* sections_with_arm_elf_section_data
= NULL
;
8992 record_section_with_arm_elf_section_data (asection
* sec
)
8994 struct section_list
* entry
;
8996 entry
= bfd_malloc (sizeof (* entry
));
9000 entry
->next
= sections_with_arm_elf_section_data
;
9002 if (entry
->next
!= NULL
)
9003 entry
->next
->prev
= entry
;
9004 sections_with_arm_elf_section_data
= entry
;
9007 static struct section_list
*
9008 find_arm_elf_section_entry (asection
* sec
)
9010 struct section_list
* entry
;
9011 static struct section_list
* last_entry
= NULL
;
9013 /* This is a short cut for the typical case where the sections are added
9014 to the sections_with_arm_elf_section_data list in forward order and
9015 then looked up here in backwards order. This makes a real difference
9016 to the ld-srec/sec64k.exp linker test. */
9017 entry
= sections_with_arm_elf_section_data
;
9018 if (last_entry
!= NULL
)
9020 if (last_entry
->sec
== sec
)
9022 else if (last_entry
->next
!= NULL
9023 && last_entry
->next
->sec
== sec
)
9024 entry
= last_entry
->next
;
9027 for (; entry
; entry
= entry
->next
)
9028 if (entry
->sec
== sec
)
9032 /* Record the entry prior to this one - it is the entry we are most
9033 likely to want to locate next time. Also this way if we have been
9034 called from unrecord_section_with_arm_elf_section_data() we will not
9035 be caching a pointer that is about to be freed. */
9036 last_entry
= entry
->prev
;
9041 static _arm_elf_section_data
*
9042 get_arm_elf_section_data (asection
* sec
)
9044 struct section_list
* entry
;
9046 entry
= find_arm_elf_section_entry (sec
);
9049 return elf32_arm_section_data (entry
->sec
);
9055 unrecord_section_with_arm_elf_section_data (asection
* sec
)
9057 struct section_list
* entry
;
9059 entry
= find_arm_elf_section_entry (sec
);
9063 if (entry
->prev
!= NULL
)
9064 entry
->prev
->next
= entry
->next
;
9065 if (entry
->next
!= NULL
)
9066 entry
->next
->prev
= entry
->prev
;
9067 if (entry
== sections_with_arm_elf_section_data
)
9068 sections_with_arm_elf_section_data
= entry
->next
;
9073 /* Called for each symbol. Builds a section map based on mapping symbols.
9074 Does not alter any of the symbols. */
9077 elf32_arm_output_symbol_hook (struct bfd_link_info
*info
,
9079 Elf_Internal_Sym
*elfsym
,
9080 asection
*input_sec
,
9081 struct elf_link_hash_entry
*h
)
9084 elf32_arm_section_map
*map
;
9085 elf32_arm_section_map
*newmap
;
9086 _arm_elf_section_data
*arm_data
;
9087 struct elf32_arm_link_hash_table
*globals
;
9089 globals
= elf32_arm_hash_table (info
);
9090 if (globals
->vxworks_p
9091 && !elf_vxworks_link_output_symbol_hook (info
, name
, elfsym
,
9095 /* Only do this on final link. */
9096 if (info
->relocatable
)
9099 /* Only build a map if we need to byteswap code. */
9100 if (!globals
->byteswap_code
)
9103 /* We only want mapping symbols. */
9104 if (!bfd_is_arm_special_symbol_name (name
, BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
9107 /* If this section has not been allocated an _arm_elf_section_data
9108 structure then we cannot record anything. */
9109 arm_data
= get_arm_elf_section_data (input_sec
);
9110 if (arm_data
== NULL
)
9113 mapcount
= arm_data
->mapcount
+ 1;
9114 map
= arm_data
->map
;
9116 /* TODO: This may be inefficient, but we probably don't usually have many
9117 mapping symbols per section. */
9118 newmap
= bfd_realloc (map
, mapcount
* sizeof (* map
));
9121 arm_data
->map
= newmap
;
9122 arm_data
->mapcount
= mapcount
;
9124 newmap
[mapcount
- 1].vma
= elfsym
->st_value
;
9125 newmap
[mapcount
- 1].type
= name
[1];
9134 struct bfd_link_info
*info
;
9137 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
9138 asection
*, struct elf_link_hash_entry
*);
9139 } output_arch_syminfo
;
9141 enum map_symbol_type
9149 /* Output a single PLT mapping symbol. */
9152 elf32_arm_ouput_plt_map_sym (output_arch_syminfo
*osi
,
9153 enum map_symbol_type type
,
9156 static const char *names
[3] = {"$a", "$t", "$d"};
9157 struct elf32_arm_link_hash_table
*htab
;
9158 Elf_Internal_Sym sym
;
9160 htab
= elf32_arm_hash_table (osi
->info
);
9161 sym
.st_value
= osi
->plt_offset
+ offset
;
9164 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
9165 sym
.st_shndx
= osi
->plt_shndx
;
9166 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, htab
->splt
, NULL
))
9172 /* Output mapping symbols for PLT entries associated with H. */
9175 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
9177 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
9178 struct elf32_arm_link_hash_table
*htab
;
9179 struct elf32_arm_link_hash_entry
*eh
;
9182 htab
= elf32_arm_hash_table (osi
->info
);
9184 if (h
->root
.type
== bfd_link_hash_indirect
)
9187 if (h
->root
.type
== bfd_link_hash_warning
)
9188 /* When warning symbols are created, they **replace** the "real"
9189 entry in the hash table, thus we never get to see the real
9190 symbol in a hash traversal. So look at it now. */
9191 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9193 if (h
->plt
.offset
== (bfd_vma
) -1)
9196 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9197 addr
= h
->plt
.offset
;
9198 if (htab
->symbian_p
)
9200 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9202 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
9205 else if (htab
->vxworks_p
)
9207 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9209 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
9211 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
9213 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
9218 bfd_boolean thumb_stub
;
9220 thumb_stub
= eh
->plt_thumb_refcount
> 0 && !htab
->use_blx
;
9223 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
9226 #ifdef FOUR_WORD_PLT
9227 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9229 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
9232 /* A three-word PLT with no Thumb thunk contains only Arm code,
9233 so only need to output a mapping symbol for the first PLT entry and
9234 entries with thumb thunks. */
9235 if (thumb_stub
|| addr
== 20)
9237 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
9247 /* Output mapping symbols for the PLT. */
9250 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
9251 struct bfd_link_info
*info
,
9252 void *finfo
, bfd_boolean (*func
) (void *, const char *,
9255 struct elf_link_hash_entry
*))
9257 output_arch_syminfo osi
;
9258 struct elf32_arm_link_hash_table
*htab
;
9260 htab
= elf32_arm_hash_table (info
);
9261 if (!htab
->splt
|| htab
->splt
->size
== 0)
9264 check_use_blx(htab
);
9268 osi
.plt_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
9269 htab
->splt
->output_section
);
9270 osi
.plt_offset
= htab
->splt
->output_section
->vma
;
9272 /* Output mapping symbols for the plt header. SymbianOS does not have a
9274 if (htab
->vxworks_p
)
9276 /* VxWorks shared libraries have no PLT header. */
9279 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
9281 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 12))
9285 else if (!htab
->symbian_p
)
9287 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
9289 #ifndef FOUR_WORD_PLT
9290 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 16))
9295 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
9299 /* Allocate target specific section data. */
9302 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
9304 if (!sec
->used_by_bfd
)
9306 _arm_elf_section_data
*sdata
;
9307 bfd_size_type amt
= sizeof (*sdata
);
9309 sdata
= bfd_zalloc (abfd
, amt
);
9312 sec
->used_by_bfd
= sdata
;
9315 record_section_with_arm_elf_section_data (sec
);
9317 return _bfd_elf_new_section_hook (abfd
, sec
);
9321 /* Used to order a list of mapping symbols by address. */
9324 elf32_arm_compare_mapping (const void * a
, const void * b
)
9326 return ((const elf32_arm_section_map
*) a
)->vma
9327 > ((const elf32_arm_section_map
*) b
)->vma
;
9331 /* Do code byteswapping. Return FALSE afterwards so that the section is
9332 written out as normal. */
9335 elf32_arm_write_section (bfd
*output_bfd ATTRIBUTE_UNUSED
, asection
*sec
,
9339 _arm_elf_section_data
*arm_data
;
9340 elf32_arm_section_map
*map
;
9347 /* If this section has not been allocated an _arm_elf_section_data
9348 structure then we cannot record anything. */
9349 arm_data
= get_arm_elf_section_data (sec
);
9350 if (arm_data
== NULL
)
9353 mapcount
= arm_data
->mapcount
;
9354 map
= arm_data
->map
;
9359 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
9361 offset
= sec
->output_section
->vma
+ sec
->output_offset
;
9362 ptr
= map
[0].vma
- offset
;
9363 for (i
= 0; i
< mapcount
; i
++)
9365 if (i
== mapcount
- 1)
9368 end
= map
[i
+ 1].vma
- offset
;
9370 switch (map
[i
].type
)
9373 /* Byte swap code words. */
9374 while (ptr
+ 3 < end
)
9376 tmp
= contents
[ptr
];
9377 contents
[ptr
] = contents
[ptr
+ 3];
9378 contents
[ptr
+ 3] = tmp
;
9379 tmp
= contents
[ptr
+ 1];
9380 contents
[ptr
+ 1] = contents
[ptr
+ 2];
9381 contents
[ptr
+ 2] = tmp
;
9387 /* Byte swap code halfwords. */
9388 while (ptr
+ 1 < end
)
9390 tmp
= contents
[ptr
];
9391 contents
[ptr
] = contents
[ptr
+ 1];
9392 contents
[ptr
+ 1] = tmp
;
9398 /* Leave data alone. */
9405 arm_data
->mapcount
= 0;
9406 arm_data
->map
= NULL
;
9407 unrecord_section_with_arm_elf_section_data (sec
);
9413 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
9415 void * ignore ATTRIBUTE_UNUSED
)
9417 unrecord_section_with_arm_elf_section_data (sec
);
9421 elf32_arm_close_and_cleanup (bfd
* abfd
)
9424 bfd_map_over_sections (abfd
,
9425 unrecord_section_via_map_over_sections
,
9428 return _bfd_elf_close_and_cleanup (abfd
);
9432 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
9435 bfd_map_over_sections (abfd
,
9436 unrecord_section_via_map_over_sections
,
9439 return _bfd_free_cached_info (abfd
);
9442 /* Display STT_ARM_TFUNC symbols as functions. */
9445 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
9448 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
9450 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
9451 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
9455 /* Mangle thumb function symbols as we read them in. */
9458 elf32_arm_swap_symbol_in (bfd
* abfd
,
9461 Elf_Internal_Sym
*dst
)
9463 if (!bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
9466 /* New EABI objects mark thumb function symbols by setting the low bit of
9467 the address. Turn these into STT_ARM_TFUNC. */
9468 if (ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
9469 && (dst
->st_value
& 1))
9471 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
9472 dst
->st_value
&= ~(bfd_vma
) 1;
9478 /* Mangle thumb function symbols as we write them out. */
9481 elf32_arm_swap_symbol_out (bfd
*abfd
,
9482 const Elf_Internal_Sym
*src
,
9486 Elf_Internal_Sym newsym
;
9488 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
9489 of the address set, as per the new EABI. We do this unconditionally
9490 because objcopy does not set the elf header flags until after
9491 it writes out the symbol table. */
9492 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
9495 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
9496 if (newsym
.st_shndx
!= SHN_UNDEF
)
9498 /* Do this only for defined symbols. At link type, the static
9499 linker will simulate the work of dynamic linker of resolving
9500 symbols and will carry over the thumbness of found symbols to
9501 the output symbol table. It's not clear how it happens, but
9502 the thumbness of undefined symbols can well be different at
9503 runtime, and writing '1' for them will be confusing for users
9504 and possibly for dynamic linker itself.
9506 newsym
.st_value
|= 1;
9511 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
9514 /* Add the PT_ARM_EXIDX program header. */
9517 elf32_arm_modify_segment_map (bfd
*abfd
,
9518 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
9520 struct elf_segment_map
*m
;
9523 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
9524 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
9526 /* If there is already a PT_ARM_EXIDX header, then we do not
9527 want to add another one. This situation arises when running
9528 "strip"; the input binary already has the header. */
9529 m
= elf_tdata (abfd
)->segment_map
;
9530 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
9534 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
9537 m
->p_type
= PT_ARM_EXIDX
;
9539 m
->sections
[0] = sec
;
9541 m
->next
= elf_tdata (abfd
)->segment_map
;
9542 elf_tdata (abfd
)->segment_map
= m
;
9549 /* We may add a PT_ARM_EXIDX program header. */
9552 elf32_arm_additional_program_headers (bfd
*abfd
,
9553 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
9557 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
9558 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
9564 /* We use this to override swap_symbol_in and swap_symbol_out. */
9565 const struct elf_size_info elf32_arm_size_info
= {
9566 sizeof (Elf32_External_Ehdr
),
9567 sizeof (Elf32_External_Phdr
),
9568 sizeof (Elf32_External_Shdr
),
9569 sizeof (Elf32_External_Rel
),
9570 sizeof (Elf32_External_Rela
),
9571 sizeof (Elf32_External_Sym
),
9572 sizeof (Elf32_External_Dyn
),
9573 sizeof (Elf_External_Note
),
9577 ELFCLASS32
, EV_CURRENT
,
9578 bfd_elf32_write_out_phdrs
,
9579 bfd_elf32_write_shdrs_and_ehdr
,
9580 bfd_elf32_write_relocs
,
9581 elf32_arm_swap_symbol_in
,
9582 elf32_arm_swap_symbol_out
,
9583 bfd_elf32_slurp_reloc_table
,
9584 bfd_elf32_slurp_symbol_table
,
9585 bfd_elf32_swap_dyn_in
,
9586 bfd_elf32_swap_dyn_out
,
9587 bfd_elf32_swap_reloc_in
,
9588 bfd_elf32_swap_reloc_out
,
9589 bfd_elf32_swap_reloca_in
,
9590 bfd_elf32_swap_reloca_out
9593 #define ELF_ARCH bfd_arch_arm
9594 #define ELF_MACHINE_CODE EM_ARM
9595 #ifdef __QNXTARGET__
9596 #define ELF_MAXPAGESIZE 0x1000
9598 #define ELF_MAXPAGESIZE 0x8000
9600 #define ELF_MINPAGESIZE 0x1000
9601 #define ELF_COMMONPAGESIZE 0x1000
9603 #define bfd_elf32_mkobject elf32_arm_mkobject
9605 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
9606 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
9607 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
9608 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
9609 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
9610 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
9611 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
9612 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
9613 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
9614 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
9615 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
9616 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
9617 #define bfd_elf32_bfd_final_link elf32_arm_bfd_final_link
9619 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
9620 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
9621 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
9622 #define elf_backend_check_relocs elf32_arm_check_relocs
9623 #define elf_backend_relocate_section elf32_arm_relocate_section
9624 #define elf_backend_write_section elf32_arm_write_section
9625 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
9626 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
9627 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
9628 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
9629 #define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook
9630 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
9631 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
9632 #define elf_backend_post_process_headers elf32_arm_post_process_headers
9633 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
9634 #define elf_backend_object_p elf32_arm_object_p
9635 #define elf_backend_section_flags elf32_arm_section_flags
9636 #define elf_backend_fake_sections elf32_arm_fake_sections
9637 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
9638 #define elf_backend_final_write_processing elf32_arm_final_write_processing
9639 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
9640 #define elf_backend_symbol_processing elf32_arm_symbol_processing
9641 #define elf_backend_size_info elf32_arm_size_info
9642 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
9643 #define elf_backend_additional_program_headers \
9644 elf32_arm_additional_program_headers
9645 #define elf_backend_output_arch_local_syms \
9646 elf32_arm_output_arch_local_syms
9647 #define elf_backend_begin_write_processing \
9648 elf32_arm_begin_write_processing
9650 #define elf_backend_can_refcount 1
9651 #define elf_backend_can_gc_sections 1
9652 #define elf_backend_plt_readonly 1
9653 #define elf_backend_want_got_plt 1
9654 #define elf_backend_want_plt_sym 0
9655 #define elf_backend_may_use_rel_p 1
9656 #define elf_backend_may_use_rela_p 0
9657 #define elf_backend_default_use_rela_p 0
9658 #define elf_backend_rela_normal 0
9660 #define elf_backend_got_header_size 12
9662 #include "elf32-target.h"
9664 /* VxWorks Targets */
9666 #undef TARGET_LITTLE_SYM
9667 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
9668 #undef TARGET_LITTLE_NAME
9669 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
9670 #undef TARGET_BIG_SYM
9671 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
9672 #undef TARGET_BIG_NAME
9673 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
9675 /* Like elf32_arm_link_hash_table_create -- but overrides
9676 appropriately for VxWorks. */
9677 static struct bfd_link_hash_table
*
9678 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
9680 struct bfd_link_hash_table
*ret
;
9682 ret
= elf32_arm_link_hash_table_create (abfd
);
9685 struct elf32_arm_link_hash_table
*htab
9686 = (struct elf32_arm_link_hash_table
*) ret
;
9688 htab
->vxworks_p
= 1;
9694 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
9696 elf32_arm_final_write_processing (abfd
, linker
);
9697 elf_vxworks_final_write_processing (abfd
, linker
);
9701 #define elf32_bed elf32_arm_vxworks_bed
9703 #undef bfd_elf32_bfd_link_hash_table_create
9704 #define bfd_elf32_bfd_link_hash_table_create \
9705 elf32_arm_vxworks_link_hash_table_create
9706 #undef elf_backend_add_symbol_hook
9707 #define elf_backend_add_symbol_hook \
9708 elf_vxworks_add_symbol_hook
9709 #undef elf_backend_final_write_processing
9710 #define elf_backend_final_write_processing \
9711 elf32_arm_vxworks_final_write_processing
9712 #undef elf_backend_emit_relocs
9713 #define elf_backend_emit_relocs \
9714 elf_vxworks_emit_relocs
9716 #undef elf_backend_may_use_rel_p
9717 #define elf_backend_may_use_rel_p 0
9718 #undef elf_backend_may_use_rela_p
9719 #define elf_backend_may_use_rela_p 1
9720 #undef elf_backend_default_use_rela_p
9721 #define elf_backend_default_use_rela_p 1
9722 #undef elf_backend_rela_normal
9723 #define elf_backend_rela_normal 1
9724 #undef elf_backend_want_plt_sym
9725 #define elf_backend_want_plt_sym 1
9726 #undef ELF_MAXPAGESIZE
9727 #define ELF_MAXPAGESIZE 0x1000
9729 #include "elf32-target.h"
9732 /* Symbian OS Targets */
9734 #undef TARGET_LITTLE_SYM
9735 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
9736 #undef TARGET_LITTLE_NAME
9737 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
9738 #undef TARGET_BIG_SYM
9739 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
9740 #undef TARGET_BIG_NAME
9741 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
9743 /* Like elf32_arm_link_hash_table_create -- but overrides
9744 appropriately for Symbian OS. */
9745 static struct bfd_link_hash_table
*
9746 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
9748 struct bfd_link_hash_table
*ret
;
9750 ret
= elf32_arm_link_hash_table_create (abfd
);
9753 struct elf32_arm_link_hash_table
*htab
9754 = (struct elf32_arm_link_hash_table
*)ret
;
9755 /* There is no PLT header for Symbian OS. */
9756 htab
->plt_header_size
= 0;
9757 /* The PLT entries are each three instructions. */
9758 htab
->plt_entry_size
= 4 * NUM_ELEM (elf32_arm_symbian_plt_entry
);
9759 htab
->symbian_p
= 1;
9760 /* Symbian uses armv5t or above, so use_blx is always true. */
9762 htab
->root
.is_relocatable_executable
= 1;
9767 static const struct bfd_elf_special_section
9768 elf32_arm_symbian_special_sections
[] =
9770 /* In a BPABI executable, the dynamic linking sections do not go in
9771 the loadable read-only segment. The post-linker may wish to
9772 refer to these sections, but they are not part of the final
9774 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC
, 0 },
9775 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB
, 0 },
9776 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM
, 0 },
9777 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS
, 0 },
9778 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH
, 0 },
9779 /* These sections do not need to be writable as the SymbianOS
9780 postlinker will arrange things so that no dynamic relocation is
9782 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
9783 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
9784 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
9785 { NULL
, 0, 0, 0, 0 }
9789 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
9790 struct bfd_link_info
*link_info
)
9792 /* BPABI objects are never loaded directly by an OS kernel; they are
9793 processed by a postlinker first, into an OS-specific format. If
9794 the D_PAGED bit is set on the file, BFD will align segments on
9795 page boundaries, so that an OS can directly map the file. With
9796 BPABI objects, that just results in wasted space. In addition,
9797 because we clear the D_PAGED bit, map_sections_to_segments will
9798 recognize that the program headers should not be mapped into any
9799 loadable segment. */
9800 abfd
->flags
&= ~D_PAGED
;
9801 elf32_arm_begin_write_processing(abfd
, link_info
);
9805 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
9806 struct bfd_link_info
*info
)
9808 struct elf_segment_map
*m
;
9811 /* BPABI shared libraries and executables should have a PT_DYNAMIC
9812 segment. However, because the .dynamic section is not marked
9813 with SEC_LOAD, the generic ELF code will not create such a
9815 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
9818 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
9819 if (m
->p_type
== PT_DYNAMIC
)
9824 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
9825 m
->next
= elf_tdata (abfd
)->segment_map
;
9826 elf_tdata (abfd
)->segment_map
= m
;
9830 /* Also call the generic arm routine. */
9831 return elf32_arm_modify_segment_map (abfd
, info
);
9835 #define elf32_bed elf32_arm_symbian_bed
9837 /* The dynamic sections are not allocated on SymbianOS; the postlinker
9838 will process them and then discard them. */
9839 #undef ELF_DYNAMIC_SEC_FLAGS
9840 #define ELF_DYNAMIC_SEC_FLAGS \
9841 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
9843 #undef bfd_elf32_bfd_link_hash_table_create
9844 #define bfd_elf32_bfd_link_hash_table_create \
9845 elf32_arm_symbian_link_hash_table_create
9846 #undef elf_backend_add_symbol_hook
9848 #undef elf_backend_special_sections
9849 #define elf_backend_special_sections elf32_arm_symbian_special_sections
9851 #undef elf_backend_begin_write_processing
9852 #define elf_backend_begin_write_processing \
9853 elf32_arm_symbian_begin_write_processing
9854 #undef elf_backend_final_write_processing
9855 #define elf_backend_final_write_processing \
9856 elf32_arm_final_write_processing
9857 #undef elf_backend_emit_relocs
9859 #undef elf_backend_modify_segment_map
9860 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
9862 /* There is no .got section for BPABI objects, and hence no header. */
9863 #undef elf_backend_got_header_size
9864 #define elf_backend_got_header_size 0
9866 /* Similarly, there is no .got.plt section. */
9867 #undef elf_backend_want_got_plt
9868 #define elf_backend_want_got_plt 0
9870 #undef elf_backend_may_use_rel_p
9871 #define elf_backend_may_use_rel_p 1
9872 #undef elf_backend_may_use_rela_p
9873 #define elf_backend_may_use_rela_p 0
9874 #undef elf_backend_default_use_rela_p
9875 #define elf_backend_default_use_rela_p 0
9876 #undef elf_backend_rela_normal
9877 #define elf_backend_rela_normal 0
9878 #undef elf_backend_want_plt_sym
9879 #define elf_backend_want_plt_sym 0
9880 #undef ELF_MAXPAGESIZE
9881 #define ELF_MAXPAGESIZE 0x8000
9883 #include "elf32-target.h"