1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 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 static reloc_howto_type
*
1791 elf32_arm_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1797 i
< (sizeof (elf32_arm_howto_table_1
)
1798 / sizeof (elf32_arm_howto_table_1
[0]));
1800 if (elf32_arm_howto_table_1
[i
].name
!= NULL
1801 && strcasecmp (elf32_arm_howto_table_1
[i
].name
, r_name
) == 0)
1802 return &elf32_arm_howto_table_1
[i
];
1805 i
< (sizeof (elf32_arm_howto_table_2
)
1806 / sizeof (elf32_arm_howto_table_2
[0]));
1808 if (elf32_arm_howto_table_2
[i
].name
!= NULL
1809 && strcasecmp (elf32_arm_howto_table_2
[i
].name
, r_name
) == 0)
1810 return &elf32_arm_howto_table_2
[i
];
1815 /* Support for core dump NOTE sections */
1817 elf32_arm_nabi_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1822 switch (note
->descsz
)
1827 case 148: /* Linux/ARM 32-bit*/
1829 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1832 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1841 /* Make a ".reg/999" section. */
1842 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1843 size
, note
->descpos
+ offset
);
1847 elf32_arm_nabi_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1849 switch (note
->descsz
)
1854 case 124: /* Linux/ARM elf_prpsinfo */
1855 elf_tdata (abfd
)->core_program
1856 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
1857 elf_tdata (abfd
)->core_command
1858 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
1861 /* Note that for some reason, a spurious space is tacked
1862 onto the end of the args in some (at least one anyway)
1863 implementations, so strip it off if it exists. */
1866 char *command
= elf_tdata (abfd
)->core_command
;
1867 int n
= strlen (command
);
1869 if (0 < n
&& command
[n
- 1] == ' ')
1870 command
[n
- 1] = '\0';
1876 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1877 #define TARGET_LITTLE_NAME "elf32-littlearm"
1878 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1879 #define TARGET_BIG_NAME "elf32-bigarm"
1881 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1882 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1884 typedef unsigned long int insn32
;
1885 typedef unsigned short int insn16
;
1887 /* In lieu of proper flags, assume all EABIv4 or later objects are
1889 #define INTERWORK_FLAG(abfd) \
1890 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1891 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1893 /* The linker script knows the section names for placement.
1894 The entry_names are used to do simple name mangling on the stubs.
1895 Given a function name, and its type, the stub can be found. The
1896 name can be changed. The only requirement is the %s be present. */
1897 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1898 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1900 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1901 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1903 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1904 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1906 /* The name of the dynamic interpreter. This is put in the .interp
1908 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1910 #ifdef FOUR_WORD_PLT
1912 /* The first entry in a procedure linkage table looks like
1913 this. It is set up so that any shared library function that is
1914 called before the relocation has been set up calls the dynamic
1916 static const bfd_vma elf32_arm_plt0_entry
[] =
1918 0xe52de004, /* str lr, [sp, #-4]! */
1919 0xe59fe010, /* ldr lr, [pc, #16] */
1920 0xe08fe00e, /* add lr, pc, lr */
1921 0xe5bef008, /* ldr pc, [lr, #8]! */
1924 /* Subsequent entries in a procedure linkage table look like
1926 static const bfd_vma elf32_arm_plt_entry
[] =
1928 0xe28fc600, /* add ip, pc, #NN */
1929 0xe28cca00, /* add ip, ip, #NN */
1930 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1931 0x00000000, /* unused */
1936 /* The first entry in a procedure linkage table looks like
1937 this. It is set up so that any shared library function that is
1938 called before the relocation has been set up calls the dynamic
1940 static const bfd_vma elf32_arm_plt0_entry
[] =
1942 0xe52de004, /* str lr, [sp, #-4]! */
1943 0xe59fe004, /* ldr lr, [pc, #4] */
1944 0xe08fe00e, /* add lr, pc, lr */
1945 0xe5bef008, /* ldr pc, [lr, #8]! */
1946 0x00000000, /* &GOT[0] - . */
1949 /* Subsequent entries in a procedure linkage table look like
1951 static const bfd_vma elf32_arm_plt_entry
[] =
1953 0xe28fc600, /* add ip, pc, #0xNN00000 */
1954 0xe28cca00, /* add ip, ip, #0xNN000 */
1955 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1960 /* The format of the first entry in the procedure linkage table
1961 for a VxWorks executable. */
1962 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry
[] =
1964 0xe52dc008, /* str ip,[sp,#-8]! */
1965 0xe59fc000, /* ldr ip,[pc] */
1966 0xe59cf008, /* ldr pc,[ip,#8] */
1967 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1970 /* The format of subsequent entries in a VxWorks executable. */
1971 static const bfd_vma elf32_arm_vxworks_exec_plt_entry
[] =
1973 0xe59fc000, /* ldr ip,[pc] */
1974 0xe59cf000, /* ldr pc,[ip] */
1975 0x00000000, /* .long @got */
1976 0xe59fc000, /* ldr ip,[pc] */
1977 0xea000000, /* b _PLT */
1978 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1981 /* The format of entries in a VxWorks shared library. */
1982 static const bfd_vma elf32_arm_vxworks_shared_plt_entry
[] =
1984 0xe59fc000, /* ldr ip,[pc] */
1985 0xe79cf009, /* ldr pc,[ip,r9] */
1986 0x00000000, /* .long @got */
1987 0xe59fc000, /* ldr ip,[pc] */
1988 0xe599f008, /* ldr pc,[r9,#8] */
1989 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1992 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1993 #define PLT_THUMB_STUB_SIZE 4
1994 static const bfd_vma elf32_arm_plt_thumb_stub
[] =
2000 /* The entries in a PLT when using a DLL-based target with multiple
2002 static const bfd_vma elf32_arm_symbian_plt_entry
[] =
2004 0xe51ff004, /* ldr pc, [pc, #-4] */
2005 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2008 /* Used to build a map of a section. This is required for mixed-endian
2011 typedef struct elf32_elf_section_map
2016 elf32_arm_section_map
;
2018 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2022 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
,
2023 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
,
2024 VFP11_ERRATUM_ARM_VENEER
,
2025 VFP11_ERRATUM_THUMB_VENEER
2027 elf32_vfp11_erratum_type
;
2029 typedef struct elf32_vfp11_erratum_list
2031 struct elf32_vfp11_erratum_list
*next
;
2037 struct elf32_vfp11_erratum_list
*veneer
;
2038 unsigned int vfp_insn
;
2042 struct elf32_vfp11_erratum_list
*branch
;
2046 elf32_vfp11_erratum_type type
;
2048 elf32_vfp11_erratum_list
;
2050 typedef struct _arm_elf_section_data
2052 struct bfd_elf_section_data elf
;
2053 unsigned int mapcount
;
2054 unsigned int mapsize
;
2055 elf32_arm_section_map
*map
;
2056 unsigned int erratumcount
;
2057 elf32_vfp11_erratum_list
*erratumlist
;
2059 _arm_elf_section_data
;
2061 #define elf32_arm_section_data(sec) \
2062 ((_arm_elf_section_data *) elf_section_data (sec))
2064 /* The size of the thread control block. */
2067 #define NUM_KNOWN_ATTRIBUTES 32
2069 typedef struct aeabi_attribute
2076 typedef struct aeabi_attribute_list
2078 struct aeabi_attribute_list
*next
;
2080 aeabi_attribute attr
;
2081 } aeabi_attribute_list
;
2083 struct elf32_arm_obj_tdata
2085 struct elf_obj_tdata root
;
2087 /* tls_type for each local got entry. */
2088 char *local_got_tls_type
;
2090 aeabi_attribute known_eabi_attributes
[NUM_KNOWN_ATTRIBUTES
];
2091 aeabi_attribute_list
*other_eabi_attributes
;
2093 /* Zero to warn when linking objects with incompatible enum sizes. */
2094 int no_enum_size_warning
;
2097 #define elf32_arm_tdata(abfd) \
2098 ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any)
2100 #define elf32_arm_local_got_tls_type(abfd) \
2101 (elf32_arm_tdata (abfd)->local_got_tls_type)
2104 elf32_arm_mkobject (bfd
*abfd
)
2106 if (abfd
->tdata
.any
== NULL
)
2108 bfd_size_type amt
= sizeof (struct elf32_arm_obj_tdata
);
2109 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2110 if (abfd
->tdata
.any
== NULL
)
2113 return bfd_elf_mkobject (abfd
);
2116 /* The ARM linker needs to keep track of the number of relocs that it
2117 decides to copy in check_relocs for each symbol. This is so that
2118 it can discard PC relative relocs if it doesn't need them when
2119 linking with -Bsymbolic. We store the information in a field
2120 extending the regular ELF linker hash table. */
2122 /* This structure keeps track of the number of relocs we have copied
2123 for a given symbol. */
2124 struct elf32_arm_relocs_copied
2127 struct elf32_arm_relocs_copied
* next
;
2128 /* A section in dynobj. */
2130 /* Number of relocs copied in this section. */
2131 bfd_size_type count
;
2132 /* Number of PC-relative relocs copied in this section. */
2133 bfd_size_type pc_count
;
2136 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2138 /* Arm ELF linker hash entry. */
2139 struct elf32_arm_link_hash_entry
2141 struct elf_link_hash_entry root
;
2143 /* Number of PC relative relocs copied for this symbol. */
2144 struct elf32_arm_relocs_copied
* relocs_copied
;
2146 /* We reference count Thumb references to a PLT entry separately,
2147 so that we can emit the Thumb trampoline only if needed. */
2148 bfd_signed_vma plt_thumb_refcount
;
2150 /* Since PLT entries have variable size if the Thumb prologue is
2151 used, we need to record the index into .got.plt instead of
2152 recomputing it from the PLT offset. */
2153 bfd_signed_vma plt_got_offset
;
2155 #define GOT_UNKNOWN 0
2156 #define GOT_NORMAL 1
2157 #define GOT_TLS_GD 2
2158 #define GOT_TLS_IE 4
2159 unsigned char tls_type
;
2161 /* The symbol marking the real symbol location for exported thumb
2162 symbols with Arm stubs. */
2163 struct elf_link_hash_entry
*export_glue
;
2166 /* Traverse an arm ELF linker hash table. */
2167 #define elf32_arm_link_hash_traverse(table, func, info) \
2168 (elf_link_hash_traverse \
2170 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2173 /* Get the ARM elf linker hash table from a link_info structure. */
2174 #define elf32_arm_hash_table(info) \
2175 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2177 /* ARM ELF linker hash table. */
2178 struct elf32_arm_link_hash_table
2180 /* The main hash table. */
2181 struct elf_link_hash_table root
;
2183 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2184 bfd_size_type thumb_glue_size
;
2186 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2187 bfd_size_type arm_glue_size
;
2189 /* The size in bytes of the section containing glue for VFP11 erratum
2191 bfd_size_type vfp11_erratum_glue_size
;
2193 /* An arbitrary input BFD chosen to hold the glue sections. */
2194 bfd
* bfd_of_glue_owner
;
2196 /* Nonzero to output a BE8 image. */
2199 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2200 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2203 /* The relocation to use for R_ARM_TARGET2 relocations. */
2206 /* Nonzero to fix BX instructions for ARMv4 targets. */
2209 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2212 /* What sort of code sequences we should look for which may trigger the
2213 VFP11 denorm erratum. */
2214 bfd_arm_vfp11_fix vfp11_fix
;
2216 /* Global counter for the number of fixes we have emitted. */
2217 int num_vfp11_fixes
;
2219 /* Nonzero to force PIC branch veneers. */
2222 /* The number of bytes in the initial entry in the PLT. */
2223 bfd_size_type plt_header_size
;
2225 /* The number of bytes in the subsequent PLT etries. */
2226 bfd_size_type plt_entry_size
;
2228 /* True if the target system is VxWorks. */
2231 /* True if the target system is Symbian OS. */
2234 /* True if the target uses REL relocations. */
2237 /* Short-cuts to get to dynamic linker sections. */
2246 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2249 /* Data for R_ARM_TLS_LDM32 relocations. */
2251 bfd_signed_vma refcount
;
2255 /* Small local sym to section mapping cache. */
2256 struct sym_sec_cache sym_sec
;
2258 /* For convenience in allocate_dynrelocs. */
2262 /* Create an entry in an ARM ELF linker hash table. */
2264 static struct bfd_hash_entry
*
2265 elf32_arm_link_hash_newfunc (struct bfd_hash_entry
* entry
,
2266 struct bfd_hash_table
* table
,
2267 const char * string
)
2269 struct elf32_arm_link_hash_entry
* ret
=
2270 (struct elf32_arm_link_hash_entry
*) entry
;
2272 /* Allocate the structure if it has not already been allocated by a
2274 if (ret
== (struct elf32_arm_link_hash_entry
*) NULL
)
2275 ret
= bfd_hash_allocate (table
, sizeof (struct elf32_arm_link_hash_entry
));
2277 return (struct bfd_hash_entry
*) ret
;
2279 /* Call the allocation method of the superclass. */
2280 ret
= ((struct elf32_arm_link_hash_entry
*)
2281 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2285 ret
->relocs_copied
= NULL
;
2286 ret
->tls_type
= GOT_UNKNOWN
;
2287 ret
->plt_thumb_refcount
= 0;
2288 ret
->plt_got_offset
= -1;
2289 ret
->export_glue
= NULL
;
2292 return (struct bfd_hash_entry
*) ret
;
2295 /* Return true if NAME is the name of the relocation section associated
2299 reloc_section_p (struct elf32_arm_link_hash_table
*htab
,
2300 const char *name
, asection
*s
)
2303 return CONST_STRNEQ (name
, ".rel") && strcmp (s
->name
, name
+ 4) == 0;
2305 return CONST_STRNEQ (name
, ".rela") && strcmp (s
->name
, name
+ 5) == 0;
2308 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2309 shortcuts to them in our hash table. */
2312 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2314 struct elf32_arm_link_hash_table
*htab
;
2316 htab
= elf32_arm_hash_table (info
);
2317 /* BPABI objects never have a GOT, or associated sections. */
2318 if (htab
->symbian_p
)
2321 if (! _bfd_elf_create_got_section (dynobj
, info
))
2324 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
2325 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
2326 if (!htab
->sgot
|| !htab
->sgotplt
)
2329 htab
->srelgot
= bfd_make_section_with_flags (dynobj
,
2330 RELOC_SECTION (htab
, ".got"),
2331 (SEC_ALLOC
| SEC_LOAD
2334 | SEC_LINKER_CREATED
2336 if (htab
->srelgot
== NULL
2337 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
2342 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2343 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2347 elf32_arm_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
2349 struct elf32_arm_link_hash_table
*htab
;
2351 htab
= elf32_arm_hash_table (info
);
2352 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
2355 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
2358 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
2359 htab
->srelplt
= bfd_get_section_by_name (dynobj
,
2360 RELOC_SECTION (htab
, ".plt"));
2361 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
2363 htab
->srelbss
= bfd_get_section_by_name (dynobj
,
2364 RELOC_SECTION (htab
, ".bss"));
2366 if (htab
->vxworks_p
)
2368 if (!elf_vxworks_create_dynamic_sections (dynobj
, info
, &htab
->srelplt2
))
2373 htab
->plt_header_size
= 0;
2374 htab
->plt_entry_size
2375 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry
);
2379 htab
->plt_header_size
2380 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry
);
2381 htab
->plt_entry_size
2382 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry
);
2389 || (!info
->shared
&& !htab
->srelbss
))
2395 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2398 elf32_arm_copy_indirect_symbol (struct bfd_link_info
*info
,
2399 struct elf_link_hash_entry
*dir
,
2400 struct elf_link_hash_entry
*ind
)
2402 struct elf32_arm_link_hash_entry
*edir
, *eind
;
2404 edir
= (struct elf32_arm_link_hash_entry
*) dir
;
2405 eind
= (struct elf32_arm_link_hash_entry
*) ind
;
2407 if (eind
->relocs_copied
!= NULL
)
2409 if (edir
->relocs_copied
!= NULL
)
2411 struct elf32_arm_relocs_copied
**pp
;
2412 struct elf32_arm_relocs_copied
*p
;
2414 /* Add reloc counts against the indirect sym to the direct sym
2415 list. Merge any entries against the same section. */
2416 for (pp
= &eind
->relocs_copied
; (p
= *pp
) != NULL
; )
2418 struct elf32_arm_relocs_copied
*q
;
2420 for (q
= edir
->relocs_copied
; q
!= NULL
; q
= q
->next
)
2421 if (q
->section
== p
->section
)
2423 q
->pc_count
+= p
->pc_count
;
2424 q
->count
+= p
->count
;
2431 *pp
= edir
->relocs_copied
;
2434 edir
->relocs_copied
= eind
->relocs_copied
;
2435 eind
->relocs_copied
= NULL
;
2438 if (ind
->root
.type
== bfd_link_hash_indirect
)
2440 /* Copy over PLT info. */
2441 edir
->plt_thumb_refcount
+= eind
->plt_thumb_refcount
;
2442 eind
->plt_thumb_refcount
= 0;
2444 if (dir
->got
.refcount
<= 0)
2446 edir
->tls_type
= eind
->tls_type
;
2447 eind
->tls_type
= GOT_UNKNOWN
;
2451 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2454 /* Create an ARM elf linker hash table. */
2456 static struct bfd_link_hash_table
*
2457 elf32_arm_link_hash_table_create (bfd
*abfd
)
2459 struct elf32_arm_link_hash_table
*ret
;
2460 bfd_size_type amt
= sizeof (struct elf32_arm_link_hash_table
);
2462 ret
= bfd_malloc (amt
);
2466 if (!_bfd_elf_link_hash_table_init (& ret
->root
, abfd
,
2467 elf32_arm_link_hash_newfunc
,
2468 sizeof (struct elf32_arm_link_hash_entry
)))
2475 ret
->sgotplt
= NULL
;
2476 ret
->srelgot
= NULL
;
2478 ret
->srelplt
= NULL
;
2479 ret
->sdynbss
= NULL
;
2480 ret
->srelbss
= NULL
;
2481 ret
->srelplt2
= NULL
;
2482 ret
->thumb_glue_size
= 0;
2483 ret
->arm_glue_size
= 0;
2484 ret
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
2485 ret
->vfp11_erratum_glue_size
= 0;
2486 ret
->num_vfp11_fixes
= 0;
2487 ret
->bfd_of_glue_owner
= NULL
;
2488 ret
->byteswap_code
= 0;
2489 ret
->target1_is_rel
= 0;
2490 ret
->target2_reloc
= R_ARM_NONE
;
2491 #ifdef FOUR_WORD_PLT
2492 ret
->plt_header_size
= 16;
2493 ret
->plt_entry_size
= 16;
2495 ret
->plt_header_size
= 20;
2496 ret
->plt_entry_size
= 12;
2503 ret
->sym_sec
.abfd
= NULL
;
2505 ret
->tls_ldm_got
.refcount
= 0;
2507 return &ret
->root
.root
;
2510 /* Locate the Thumb encoded calling stub for NAME. */
2512 static struct elf_link_hash_entry
*
2513 find_thumb_glue (struct bfd_link_info
*link_info
,
2515 char **error_message
)
2518 struct elf_link_hash_entry
*hash
;
2519 struct elf32_arm_link_hash_table
*hash_table
;
2521 /* We need a pointer to the armelf specific hash table. */
2522 hash_table
= elf32_arm_hash_table (link_info
);
2524 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2525 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2527 BFD_ASSERT (tmp_name
);
2529 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2531 hash
= elf_link_hash_lookup
2532 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2535 asprintf (error_message
, _("unable to find THUMB glue '%s' for '%s'"),
2543 /* Locate the ARM encoded calling stub for NAME. */
2545 static struct elf_link_hash_entry
*
2546 find_arm_glue (struct bfd_link_info
*link_info
,
2548 char **error_message
)
2551 struct elf_link_hash_entry
*myh
;
2552 struct elf32_arm_link_hash_table
*hash_table
;
2554 /* We need a pointer to the elfarm specific hash table. */
2555 hash_table
= elf32_arm_hash_table (link_info
);
2557 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2558 + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2560 BFD_ASSERT (tmp_name
);
2562 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2564 myh
= elf_link_hash_lookup
2565 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2568 asprintf (error_message
, _("unable to find ARM glue '%s' for '%s'"),
2576 /* ARM->Thumb glue (static images):
2580 ldr r12, __func_addr
2583 .word func @ behave as if you saw a ARM_32 reloc.
2590 .word func @ behave as if you saw a ARM_32 reloc.
2592 (relocatable images)
2595 ldr r12, __func_offset
2602 #define ARM2THUMB_STATIC_GLUE_SIZE 12
2603 static const insn32 a2t1_ldr_insn
= 0xe59fc000;
2604 static const insn32 a2t2_bx_r12_insn
= 0xe12fff1c;
2605 static const insn32 a2t3_func_addr_insn
= 0x00000001;
2607 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
2608 static const insn32 a2t1v5_ldr_insn
= 0xe51ff004;
2609 static const insn32 a2t2v5_func_addr_insn
= 0x00000001;
2611 #define ARM2THUMB_PIC_GLUE_SIZE 16
2612 static const insn32 a2t1p_ldr_insn
= 0xe59fc004;
2613 static const insn32 a2t2p_add_pc_insn
= 0xe08cc00f;
2614 static const insn32 a2t3p_bx_r12_insn
= 0xe12fff1c;
2616 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
2620 __func_from_thumb: __func_from_thumb:
2622 nop ldr r6, __func_addr
2624 __func_change_to_arm: bx r6
2626 __func_back_to_thumb:
2632 #define THUMB2ARM_GLUE_SIZE 8
2633 static const insn16 t2a1_bx_pc_insn
= 0x4778;
2634 static const insn16 t2a2_noop_insn
= 0x46c0;
2635 static const insn32 t2a3_b_insn
= 0xea000000;
2637 #define VFP11_ERRATUM_VENEER_SIZE 8
2639 #ifndef ELFARM_NABI_C_INCLUDED
2641 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info
* info
)
2645 struct elf32_arm_link_hash_table
* globals
;
2647 globals
= elf32_arm_hash_table (info
);
2649 BFD_ASSERT (globals
!= NULL
);
2651 if (globals
->arm_glue_size
!= 0)
2653 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2655 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
2656 ARM2THUMB_GLUE_SECTION_NAME
);
2658 BFD_ASSERT (s
!= NULL
);
2660 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->arm_glue_size
);
2662 BFD_ASSERT (s
->size
== globals
->arm_glue_size
);
2666 if (globals
->thumb_glue_size
!= 0)
2668 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2670 s
= bfd_get_section_by_name
2671 (globals
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2673 BFD_ASSERT (s
!= NULL
);
2675 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->thumb_glue_size
);
2677 BFD_ASSERT (s
->size
== globals
->thumb_glue_size
);
2681 if (globals
->vfp11_erratum_glue_size
!= 0)
2683 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2685 s
= bfd_get_section_by_name
2686 (globals
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
2688 BFD_ASSERT (s
!= NULL
);
2690 foo
= bfd_alloc (globals
->bfd_of_glue_owner
,
2691 globals
->vfp11_erratum_glue_size
);
2693 BFD_ASSERT (s
->size
== globals
->vfp11_erratum_glue_size
);
2700 /* Allocate space and symbols for calling a Thumb function from Arm mode.
2701 returns the symbol identifying teh stub. */
2702 static struct elf_link_hash_entry
*
2703 record_arm_to_thumb_glue (struct bfd_link_info
* link_info
,
2704 struct elf_link_hash_entry
* h
)
2706 const char * name
= h
->root
.root
.string
;
2709 struct elf_link_hash_entry
* myh
;
2710 struct bfd_link_hash_entry
* bh
;
2711 struct elf32_arm_link_hash_table
* globals
;
2715 globals
= elf32_arm_hash_table (link_info
);
2717 BFD_ASSERT (globals
!= NULL
);
2718 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2720 s
= bfd_get_section_by_name
2721 (globals
->bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
2723 BFD_ASSERT (s
!= NULL
);
2725 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2727 BFD_ASSERT (tmp_name
);
2729 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2731 myh
= elf_link_hash_lookup
2732 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2736 /* We've already seen this guy. */
2741 /* The only trick here is using hash_table->arm_glue_size as the value.
2742 Even though the section isn't allocated yet, this is where we will be
2745 val
= globals
->arm_glue_size
+ 1;
2746 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
2747 tmp_name
, BSF_GLOBAL
, s
, val
,
2748 NULL
, TRUE
, FALSE
, &bh
);
2750 myh
= (struct elf_link_hash_entry
*) bh
;
2751 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2752 myh
->forced_local
= 1;
2756 if (link_info
->shared
|| globals
->root
.is_relocatable_executable
2757 || globals
->pic_veneer
)
2758 size
= ARM2THUMB_PIC_GLUE_SIZE
;
2759 else if (globals
->use_blx
)
2760 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
2762 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
2765 globals
->arm_glue_size
+= size
;
2771 record_thumb_to_arm_glue (struct bfd_link_info
*link_info
,
2772 struct elf_link_hash_entry
*h
)
2774 const char *name
= h
->root
.root
.string
;
2777 struct elf_link_hash_entry
*myh
;
2778 struct bfd_link_hash_entry
*bh
;
2779 struct elf32_arm_link_hash_table
*hash_table
;
2782 hash_table
= elf32_arm_hash_table (link_info
);
2784 BFD_ASSERT (hash_table
!= NULL
);
2785 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
2787 s
= bfd_get_section_by_name
2788 (hash_table
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2790 BFD_ASSERT (s
!= NULL
);
2792 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2793 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2795 BFD_ASSERT (tmp_name
);
2797 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2799 myh
= elf_link_hash_lookup
2800 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2804 /* We've already seen this guy. */
2810 val
= hash_table
->thumb_glue_size
+ 1;
2811 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2812 tmp_name
, BSF_GLOBAL
, s
, val
,
2813 NULL
, TRUE
, FALSE
, &bh
);
2815 /* If we mark it 'Thumb', the disassembler will do a better job. */
2816 myh
= (struct elf_link_hash_entry
*) bh
;
2817 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
2818 myh
->forced_local
= 1;
2822 #define CHANGE_TO_ARM "__%s_change_to_arm"
2823 #define BACK_FROM_ARM "__%s_back_from_arm"
2825 /* Allocate another symbol to mark where we switch to Arm mode. */
2826 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2827 + strlen (CHANGE_TO_ARM
) + 1);
2829 BFD_ASSERT (tmp_name
);
2831 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
2834 val
= hash_table
->thumb_glue_size
+ 4,
2835 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2836 tmp_name
, BSF_LOCAL
, s
, val
,
2837 NULL
, TRUE
, FALSE
, &bh
);
2841 s
->size
+= THUMB2ARM_GLUE_SIZE
;
2842 hash_table
->thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
2848 /* Add an entry to the code/data map for section SEC. */
2851 elf32_arm_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
2853 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
2854 unsigned int newidx
;
2856 if (sec_data
->map
== NULL
)
2858 sec_data
->map
= bfd_malloc (sizeof (elf32_arm_section_map
));
2859 sec_data
->mapcount
= 0;
2860 sec_data
->mapsize
= 1;
2863 newidx
= sec_data
->mapcount
++;
2865 if (sec_data
->mapcount
> sec_data
->mapsize
)
2867 sec_data
->mapsize
*= 2;
2868 sec_data
->map
= bfd_realloc (sec_data
->map
, sec_data
->mapsize
2869 * sizeof (elf32_arm_section_map
));
2872 sec_data
->map
[newidx
].vma
= vma
;
2873 sec_data
->map
[newidx
].type
= type
;
2877 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
2878 veneers are handled for now. */
2881 record_vfp11_erratum_veneer (struct bfd_link_info
*link_info
,
2882 elf32_vfp11_erratum_list
*branch
,
2884 asection
*branch_sec
,
2885 unsigned int offset
)
2888 struct elf32_arm_link_hash_table
*hash_table
;
2890 struct elf_link_hash_entry
*myh
;
2891 struct bfd_link_hash_entry
*bh
;
2893 struct _arm_elf_section_data
*sec_data
;
2895 elf32_vfp11_erratum_list
*newerr
;
2897 hash_table
= elf32_arm_hash_table (link_info
);
2899 BFD_ASSERT (hash_table
!= NULL
);
2900 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
2902 s
= bfd_get_section_by_name
2903 (hash_table
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
2905 sec_data
= elf32_arm_section_data (s
);
2907 BFD_ASSERT (s
!= NULL
);
2909 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
2910 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
2912 BFD_ASSERT (tmp_name
);
2914 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
2915 hash_table
->num_vfp11_fixes
);
2917 myh
= elf_link_hash_lookup
2918 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
2920 BFD_ASSERT (myh
== NULL
);
2923 val
= hash_table
->vfp11_erratum_glue_size
;
2924 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2925 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
2926 NULL
, TRUE
, FALSE
, &bh
);
2928 myh
= (struct elf_link_hash_entry
*) bh
;
2929 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2930 myh
->forced_local
= 1;
2932 /* Link veneer back to calling location. */
2933 errcount
= ++(sec_data
->erratumcount
);
2934 newerr
= bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
2936 newerr
->type
= VFP11_ERRATUM_ARM_VENEER
;
2938 newerr
->u
.v
.branch
= branch
;
2939 newerr
->u
.v
.id
= hash_table
->num_vfp11_fixes
;
2940 branch
->u
.b
.veneer
= newerr
;
2942 newerr
->next
= sec_data
->erratumlist
;
2943 sec_data
->erratumlist
= newerr
;
2945 /* A symbol for the return from the veneer. */
2946 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
2947 hash_table
->num_vfp11_fixes
);
2949 myh
= elf_link_hash_lookup
2950 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
2957 _bfd_generic_link_add_one_symbol (link_info
, branch_bfd
, tmp_name
, BSF_LOCAL
,
2958 branch_sec
, val
, NULL
, TRUE
, FALSE
, &bh
);
2960 myh
= (struct elf_link_hash_entry
*) bh
;
2961 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2962 myh
->forced_local
= 1;
2966 /* Generate a mapping symbol for the veneer section, and explicitly add an
2967 entry for that symbol to the code/data map for the section. */
2968 if (hash_table
->vfp11_erratum_glue_size
== 0)
2971 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
2972 ever requires this erratum fix. */
2973 _bfd_generic_link_add_one_symbol (link_info
,
2974 hash_table
->bfd_of_glue_owner
, "$a",
2975 BSF_LOCAL
, s
, 0, NULL
,
2978 myh
= (struct elf_link_hash_entry
*) bh
;
2979 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
2980 myh
->forced_local
= 1;
2982 /* The elf32_arm_init_maps function only cares about symbols from input
2983 BFDs. We must make a note of this generated mapping symbol
2984 ourselves so that code byteswapping works properly in
2985 elf32_arm_write_section. */
2986 elf32_arm_section_map_add (s
, 'a', 0);
2989 s
->size
+= VFP11_ERRATUM_VENEER_SIZE
;
2990 hash_table
->vfp11_erratum_glue_size
+= VFP11_ERRATUM_VENEER_SIZE
;
2991 hash_table
->num_vfp11_fixes
++;
2993 /* The offset of the veneer. */
2997 /* Add the glue sections to ABFD. This function is called from the
2998 linker scripts in ld/emultempl/{armelf}.em. */
3001 bfd_elf32_arm_add_glue_sections_to_bfd (bfd
*abfd
,
3002 struct bfd_link_info
*info
)
3007 /* If we are only performing a partial
3008 link do not bother adding the glue. */
3009 if (info
->relocatable
)
3012 sec
= bfd_get_section_by_name (abfd
, ARM2THUMB_GLUE_SECTION_NAME
);
3016 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
3017 will prevent elf_link_input_bfd() from processing the contents
3019 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3020 | SEC_CODE
| SEC_READONLY
);
3022 sec
= bfd_make_section_with_flags (abfd
,
3023 ARM2THUMB_GLUE_SECTION_NAME
,
3027 || !bfd_set_section_alignment (abfd
, sec
, 2))
3030 /* Set the gc mark to prevent the section from being removed by garbage
3031 collection, despite the fact that no relocs refer to this section. */
3035 sec
= bfd_get_section_by_name (abfd
, THUMB2ARM_GLUE_SECTION_NAME
);
3039 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3040 | SEC_CODE
| SEC_READONLY
);
3042 sec
= bfd_make_section_with_flags (abfd
,
3043 THUMB2ARM_GLUE_SECTION_NAME
,
3047 || !bfd_set_section_alignment (abfd
, sec
, 2))
3053 sec
= bfd_get_section_by_name (abfd
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
3057 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3058 | SEC_CODE
| SEC_READONLY
);
3060 sec
= bfd_make_section_with_flags (abfd
,
3061 VFP11_ERRATUM_VENEER_SECTION_NAME
,
3065 || !bfd_set_section_alignment (abfd
, sec
, 2))
3074 /* Select a BFD to be used to hold the sections used by the glue code.
3075 This function is called from the linker scripts in ld/emultempl/
3079 bfd_elf32_arm_get_bfd_for_interworking (bfd
*abfd
, struct bfd_link_info
*info
)
3081 struct elf32_arm_link_hash_table
*globals
;
3083 /* If we are only performing a partial link
3084 do not bother getting a bfd to hold the glue. */
3085 if (info
->relocatable
)
3088 /* Make sure we don't attach the glue sections to a dynamic object. */
3089 BFD_ASSERT (!(abfd
->flags
& DYNAMIC
));
3091 globals
= elf32_arm_hash_table (info
);
3093 BFD_ASSERT (globals
!= NULL
);
3095 if (globals
->bfd_of_glue_owner
!= NULL
)
3098 /* Save the bfd for later use. */
3099 globals
->bfd_of_glue_owner
= abfd
;
3104 static void check_use_blx(struct elf32_arm_link_hash_table
*globals
)
3106 if (elf32_arm_get_eabi_attr_int (globals
->obfd
, Tag_CPU_arch
) > 2)
3107 globals
->use_blx
= 1;
3111 bfd_elf32_arm_process_before_allocation (bfd
*abfd
,
3112 struct bfd_link_info
*link_info
)
3114 Elf_Internal_Shdr
*symtab_hdr
;
3115 Elf_Internal_Rela
*internal_relocs
= NULL
;
3116 Elf_Internal_Rela
*irel
, *irelend
;
3117 bfd_byte
*contents
= NULL
;
3120 struct elf32_arm_link_hash_table
*globals
;
3122 /* If we are only performing a partial link do not bother
3123 to construct any glue. */
3124 if (link_info
->relocatable
)
3127 /* Here we have a bfd that is to be included on the link. We have a hook
3128 to do reloc rummaging, before section sizes are nailed down. */
3129 globals
= elf32_arm_hash_table (link_info
);
3130 check_use_blx (globals
);
3132 BFD_ASSERT (globals
!= NULL
);
3133 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3135 if (globals
->byteswap_code
&& !bfd_big_endian (abfd
))
3137 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
3142 /* Rummage around all the relocs and map the glue vectors. */
3143 sec
= abfd
->sections
;
3148 for (; sec
!= NULL
; sec
= sec
->next
)
3150 if (sec
->reloc_count
== 0)
3153 if ((sec
->flags
& SEC_EXCLUDE
) != 0)
3156 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3158 /* Load the relocs. */
3160 = _bfd_elf_link_read_relocs (abfd
, sec
, (void *) NULL
,
3161 (Elf_Internal_Rela
*) NULL
, FALSE
);
3163 if (internal_relocs
== NULL
)
3166 irelend
= internal_relocs
+ sec
->reloc_count
;
3167 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
3170 unsigned long r_index
;
3172 struct elf_link_hash_entry
*h
;
3174 r_type
= ELF32_R_TYPE (irel
->r_info
);
3175 r_index
= ELF32_R_SYM (irel
->r_info
);
3177 /* These are the only relocation types we care about. */
3178 if ( r_type
!= R_ARM_PC24
3179 && r_type
!= R_ARM_PLT32
3180 && r_type
!= R_ARM_CALL
3181 && r_type
!= R_ARM_JUMP24
3182 && r_type
!= R_ARM_THM_CALL
)
3185 /* Get the section contents if we haven't done so already. */
3186 if (contents
== NULL
)
3188 /* Get cached copy if it exists. */
3189 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
3190 contents
= elf_section_data (sec
)->this_hdr
.contents
;
3193 /* Go get them off disk. */
3194 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
3199 /* If the relocation is not against a symbol it cannot concern us. */
3202 /* We don't care about local symbols. */
3203 if (r_index
< symtab_hdr
->sh_info
)
3206 /* This is an external symbol. */
3207 r_index
-= symtab_hdr
->sh_info
;
3208 h
= (struct elf_link_hash_entry
*)
3209 elf_sym_hashes (abfd
)[r_index
];
3211 /* If the relocation is against a static symbol it must be within
3212 the current section and so cannot be a cross ARM/Thumb relocation. */
3216 /* If the call will go through a PLT entry then we do not need
3218 if (globals
->splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
3227 /* This one is a call from arm code. We need to look up
3228 the target of the call. If it is a thumb target, we
3230 if (ELF_ST_TYPE(h
->type
) == STT_ARM_TFUNC
3231 && !(r_type
== R_ARM_CALL
&& globals
->use_blx
))
3232 record_arm_to_thumb_glue (link_info
, h
);
3235 case R_ARM_THM_CALL
:
3236 /* This one is a call from thumb code. We look
3237 up the target of the call. If it is not a thumb
3238 target, we insert glue. */
3239 if (ELF_ST_TYPE (h
->type
) != STT_ARM_TFUNC
&& !globals
->use_blx
)
3240 record_thumb_to_arm_glue (link_info
, h
);
3248 if (contents
!= NULL
3249 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3253 if (internal_relocs
!= NULL
3254 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3255 free (internal_relocs
);
3256 internal_relocs
= NULL
;
3262 if (contents
!= NULL
3263 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3265 if (internal_relocs
!= NULL
3266 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3267 free (internal_relocs
);
3274 /* Initialise maps of ARM/Thumb/data for input BFDs. */
3277 bfd_elf32_arm_init_maps (bfd
*abfd
)
3279 Elf_Internal_Sym
*isymbuf
;
3280 Elf_Internal_Shdr
*hdr
;
3281 unsigned int i
, localsyms
;
3283 if ((abfd
->flags
& DYNAMIC
) != 0)
3286 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3287 localsyms
= hdr
->sh_info
;
3289 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
3290 should contain the number of local symbols, which should come before any
3291 global symbols. Mapping symbols are always local. */
3292 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
,
3295 /* No internal symbols read? Skip this BFD. */
3296 if (isymbuf
== NULL
)
3299 for (i
= 0; i
< localsyms
; i
++)
3301 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
3302 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3306 && ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
3308 name
= bfd_elf_string_from_elf_section (abfd
,
3309 hdr
->sh_link
, isym
->st_name
);
3311 if (bfd_is_arm_special_symbol_name (name
,
3312 BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
3313 elf32_arm_section_map_add (sec
, name
[1], isym
->st_value
);
3320 bfd_elf32_arm_set_vfp11_fix (bfd
*obfd
, struct bfd_link_info
*link_info
)
3322 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
3323 aeabi_attribute
*out_attr
= elf32_arm_tdata (obfd
)->known_eabi_attributes
;
3325 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
3326 if (out_attr
[Tag_CPU_arch
].i
>= TAG_CPU_ARCH_V7
)
3328 switch (globals
->vfp11_fix
)
3330 case BFD_ARM_VFP11_FIX_DEFAULT
:
3331 case BFD_ARM_VFP11_FIX_NONE
:
3332 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
3336 /* Give a warning, but do as the user requests anyway. */
3337 (*_bfd_error_handler
) (_("%B: warning: selected VFP11 erratum "
3338 "workaround is not necessary for target architecture"), obfd
);
3341 else if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_DEFAULT
)
3342 /* For earlier architectures, we might need the workaround, but do not
3343 enable it by default. If users is running with broken hardware, they
3344 must enable the erratum fix explicitly. */
3345 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
3349 enum bfd_arm_vfp11_pipe
{
3356 /* Return a VFP register number. This is encoded as RX:X for single-precision
3357 registers, or X:RX for double-precision registers, where RX is the group of
3358 four bits in the instruction encoding and X is the single extension bit.
3359 RX and X fields are specified using their lowest (starting) bit. The return
3362 0...31: single-precision registers s0...s31
3363 32...63: double-precision registers d0...d31.
3365 Although X should be zero for VFP11 (encoding d0...d15 only), we might
3366 encounter VFP3 instructions, so we allow the full range for DP registers. */
3369 bfd_arm_vfp11_regno (unsigned int insn
, bfd_boolean is_double
, unsigned int rx
,
3373 return (((insn
>> rx
) & 0xf) | (((insn
>> x
) & 1) << 4)) + 32;
3375 return (((insn
>> rx
) & 0xf) << 1) | ((insn
>> x
) & 1);
3378 /* Set bits in *WMASK according to a register number REG as encoded by
3379 bfd_arm_vfp11_regno(). Ignore d16-d31. */
3382 bfd_arm_vfp11_write_mask (unsigned int *wmask
, unsigned int reg
)
3387 *wmask
|= 3 << ((reg
- 32) * 2);
3390 /* Return TRUE if WMASK overwrites anything in REGS. */
3393 bfd_arm_vfp11_antidependency (unsigned int wmask
, int *regs
, int numregs
)
3397 for (i
= 0; i
< numregs
; i
++)
3399 unsigned int reg
= regs
[i
];
3401 if (reg
< 32 && (wmask
& (1 << reg
)) != 0)
3409 if ((wmask
& (3 << (reg
* 2))) != 0)
3416 /* In this function, we're interested in two things: finding input registers
3417 for VFP data-processing instructions, and finding the set of registers which
3418 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
3419 hold the written set, so FLDM etc. are easy to deal with (we're only
3420 interested in 32 SP registers or 16 dp registers, due to the VFP version
3421 implemented by the chip in question). DP registers are marked by setting
3422 both SP registers in the write mask). */
3424 static enum bfd_arm_vfp11_pipe
3425 bfd_arm_vfp11_insn_decode (unsigned int insn
, unsigned int *destmask
, int *regs
,
3428 enum bfd_arm_vfp11_pipe pipe
= VFP11_BAD
;
3429 bfd_boolean is_double
= ((insn
& 0xf00) == 0xb00) ? 1 : 0;
3431 if ((insn
& 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
3434 unsigned int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
3435 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
3437 pqrs
= ((insn
& 0x00800000) >> 20)
3438 | ((insn
& 0x00300000) >> 19)
3439 | ((insn
& 0x00000040) >> 6);
3443 case 0: /* fmac[sd]. */
3444 case 1: /* fnmac[sd]. */
3445 case 2: /* fmsc[sd]. */
3446 case 3: /* fnmsc[sd]. */
3448 bfd_arm_vfp11_write_mask (destmask
, fd
);
3450 regs
[1] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
3455 case 4: /* fmul[sd]. */
3456 case 5: /* fnmul[sd]. */
3457 case 6: /* fadd[sd]. */
3458 case 7: /* fsub[sd]. */
3462 case 8: /* fdiv[sd]. */
3465 bfd_arm_vfp11_write_mask (destmask
, fd
);
3466 regs
[0] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
3471 case 15: /* extended opcode. */
3473 unsigned int extn
= ((insn
>> 15) & 0x1e)
3474 | ((insn
>> 7) & 1);
3478 case 0: /* fcpy[sd]. */
3479 case 1: /* fabs[sd]. */
3480 case 2: /* fneg[sd]. */
3481 case 8: /* fcmp[sd]. */
3482 case 9: /* fcmpe[sd]. */
3483 case 10: /* fcmpz[sd]. */
3484 case 11: /* fcmpez[sd]. */
3485 case 16: /* fuito[sd]. */
3486 case 17: /* fsito[sd]. */
3487 case 24: /* ftoui[sd]. */
3488 case 25: /* ftouiz[sd]. */
3489 case 26: /* ftosi[sd]. */
3490 case 27: /* ftosiz[sd]. */
3491 /* These instructions will not bounce due to underflow. */
3496 case 3: /* fsqrt[sd]. */
3497 /* fsqrt cannot underflow, but it can (perhaps) overwrite
3498 registers to cause the erratum in previous instructions. */
3499 bfd_arm_vfp11_write_mask (destmask
, fd
);
3503 case 15: /* fcvt{ds,sd}. */
3507 bfd_arm_vfp11_write_mask (destmask
, fd
);
3509 /* Only FCVTSD can underflow. */
3510 if ((insn
& 0x100) != 0)
3529 /* Two-register transfer. */
3530 else if ((insn
& 0x0fe00ed0) == 0x0c400a10)
3532 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
3534 if ((insn
& 0x100000) == 0)
3537 bfd_arm_vfp11_write_mask (destmask
, fm
);
3540 bfd_arm_vfp11_write_mask (destmask
, fm
);
3541 bfd_arm_vfp11_write_mask (destmask
, fm
+ 1);
3547 else if ((insn
& 0x0e100e00) == 0x0c100a00) /* A load insn. */
3549 int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
3550 unsigned int puw
= ((insn
>> 21) & 0x1) | (((insn
>> 23) & 3) << 1);
3554 case 0: /* Two-reg transfer. We should catch these above. */
3557 case 2: /* fldm[sdx]. */
3561 unsigned int i
, offset
= insn
& 0xff;
3566 for (i
= fd
; i
< fd
+ offset
; i
++)
3567 bfd_arm_vfp11_write_mask (destmask
, i
);
3571 case 4: /* fld[sd]. */
3573 bfd_arm_vfp11_write_mask (destmask
, fd
);
3582 /* Single-register transfer. Note L==0. */
3583 else if ((insn
& 0x0f100e10) == 0x0e000a10)
3585 unsigned int opcode
= (insn
>> 21) & 7;
3586 unsigned int fn
= bfd_arm_vfp11_regno (insn
, is_double
, 16, 7);
3590 case 0: /* fmsr/fmdlr. */
3591 case 1: /* fmdhr. */
3592 /* Mark fmdhr and fmdlr as writing to the whole of the DP
3593 destination register. I don't know if this is exactly right,
3594 but it is the conservative choice. */
3595 bfd_arm_vfp11_write_mask (destmask
, fn
);
3609 static int elf32_arm_compare_mapping (const void * a
, const void * b
);
3612 /* Look for potentially-troublesome code sequences which might trigger the
3613 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
3614 (available from ARM) for details of the erratum. A short version is
3615 described in ld.texinfo. */
3618 bfd_elf32_arm_vfp11_erratum_scan (bfd
*abfd
, struct bfd_link_info
*link_info
)
3621 bfd_byte
*contents
= NULL
;
3623 int regs
[3], numregs
= 0;
3624 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
3625 int use_vector
= (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_VECTOR
);
3627 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
3628 The states transition as follows:
3630 0 -> 1 (vector) or 0 -> 2 (scalar)
3631 A VFP FMAC-pipeline instruction has been seen. Fill
3632 regs[0]..regs[numregs-1] with its input operands. Remember this
3633 instruction in 'first_fmac'.
3636 Any instruction, except for a VFP instruction which overwrites
3641 A VFP instruction has been seen which overwrites any of regs[*].
3642 We must make a veneer! Reset state to 0 before examining next
3646 If we fail to match anything in state 2, reset to state 0 and reset
3647 the instruction pointer to the instruction after 'first_fmac'.
3649 If the VFP11 vector mode is in use, there must be at least two unrelated
3650 instructions between anti-dependent VFP11 instructions to properly avoid
3651 triggering the erratum, hence the use of the extra state 1.
3654 /* If we are only performing a partial link do not bother
3655 to construct any glue. */
3656 if (link_info
->relocatable
)
3659 /* We should have chosen a fix type by the time we get here. */
3660 BFD_ASSERT (globals
->vfp11_fix
!= BFD_ARM_VFP11_FIX_DEFAULT
);
3662 if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_NONE
)
3665 /* Skip if this bfd does not correspond to an ELF image. */
3666 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
3669 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3671 unsigned int i
, span
, first_fmac
= 0, veneer_of_insn
= 0;
3672 struct _arm_elf_section_data
*sec_data
;
3674 /* If we don't have executable progbits, we're not interested in this
3675 section. Also skip if section is to be excluded. */
3676 if (elf_section_type (sec
) != SHT_PROGBITS
3677 || (elf_section_flags (sec
) & SHF_EXECINSTR
) == 0
3678 || (sec
->flags
& SEC_EXCLUDE
) != 0
3679 || strcmp (sec
->name
, VFP11_ERRATUM_VENEER_SECTION_NAME
) == 0)
3682 sec_data
= elf32_arm_section_data (sec
);
3684 if (sec_data
->mapcount
== 0)
3687 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
3688 contents
= elf_section_data (sec
)->this_hdr
.contents
;
3689 else if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
3692 qsort (sec_data
->map
, sec_data
->mapcount
, sizeof (elf32_arm_section_map
),
3693 elf32_arm_compare_mapping
);
3695 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3697 unsigned int span_start
= sec_data
->map
[span
].vma
;
3698 unsigned int span_end
= (span
== sec_data
->mapcount
- 1)
3699 ? sec
->size
: sec_data
->map
[span
+ 1].vma
;
3700 char span_type
= sec_data
->map
[span
].type
;
3702 /* FIXME: Only ARM mode is supported at present. We may need to
3703 support Thumb-2 mode also at some point. */
3704 if (span_type
!= 'a')
3707 for (i
= span_start
; i
< span_end
;)
3709 unsigned int next_i
= i
+ 4;
3710 unsigned int insn
= bfd_big_endian (abfd
)
3711 ? (contents
[i
] << 24)
3712 | (contents
[i
+ 1] << 16)
3713 | (contents
[i
+ 2] << 8)
3715 : (contents
[i
+ 3] << 24)
3716 | (contents
[i
+ 2] << 16)
3717 | (contents
[i
+ 1] << 8)
3719 unsigned int writemask
= 0;
3720 enum bfd_arm_vfp11_pipe pipe
;
3725 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
, regs
,
3727 /* I'm assuming the VFP11 erratum can trigger with denorm
3728 operands on either the FMAC or the DS pipeline. This might
3729 lead to slightly overenthusiastic veneer insertion. */
3730 if (pipe
== VFP11_FMAC
|| pipe
== VFP11_DS
)
3732 state
= use_vector
? 1 : 2;
3734 veneer_of_insn
= insn
;
3740 int other_regs
[3], other_numregs
;
3741 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
3744 if (pipe
!= VFP11_BAD
3745 && bfd_arm_vfp11_antidependency (writemask
, regs
,
3755 int other_regs
[3], other_numregs
;
3756 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
3759 if (pipe
!= VFP11_BAD
3760 && bfd_arm_vfp11_antidependency (writemask
, regs
,
3766 next_i
= first_fmac
+ 4;
3772 abort (); /* Should be unreachable. */
3777 elf32_vfp11_erratum_list
*newerr
3778 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
3781 errcount
= ++(elf32_arm_section_data (sec
)->erratumcount
);
3783 newerr
->u
.b
.vfp_insn
= veneer_of_insn
;
3788 newerr
->type
= VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
;
3795 record_vfp11_erratum_veneer (link_info
, newerr
, abfd
, sec
,
3800 newerr
->next
= sec_data
->erratumlist
;
3801 sec_data
->erratumlist
= newerr
;
3810 if (contents
!= NULL
3811 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3819 if (contents
!= NULL
3820 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3826 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
3827 after sections have been laid out, using specially-named symbols. */
3830 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd
*abfd
,
3831 struct bfd_link_info
*link_info
)
3834 struct elf32_arm_link_hash_table
*globals
;
3837 if (link_info
->relocatable
)
3840 /* Skip if this bfd does not correspond to an ELF image. */
3841 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
3844 globals
= elf32_arm_hash_table (link_info
);
3846 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
3847 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
3849 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3851 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
3852 elf32_vfp11_erratum_list
*errnode
= sec_data
->erratumlist
;
3854 for (; errnode
!= NULL
; errnode
= errnode
->next
)
3856 struct elf_link_hash_entry
*myh
;
3859 switch (errnode
->type
)
3861 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
3862 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
:
3863 /* Find veneer symbol. */
3864 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
3865 errnode
->u
.b
.veneer
->u
.v
.id
);
3867 myh
= elf_link_hash_lookup
3868 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3871 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
3872 "`%s'"), abfd
, tmp_name
);
3874 vma
= myh
->root
.u
.def
.section
->output_section
->vma
3875 + myh
->root
.u
.def
.section
->output_offset
3876 + myh
->root
.u
.def
.value
;
3878 errnode
->u
.b
.veneer
->vma
= vma
;
3881 case VFP11_ERRATUM_ARM_VENEER
:
3882 case VFP11_ERRATUM_THUMB_VENEER
:
3883 /* Find return location. */
3884 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
3887 myh
= elf_link_hash_lookup
3888 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3891 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
3892 "`%s'"), abfd
, tmp_name
);
3894 vma
= myh
->root
.u
.def
.section
->output_section
->vma
3895 + myh
->root
.u
.def
.section
->output_offset
3896 + myh
->root
.u
.def
.value
;
3898 errnode
->u
.v
.branch
->vma
= vma
;
3911 /* Set target relocation values needed during linking. */
3914 bfd_elf32_arm_set_target_relocs (struct bfd
*output_bfd
,
3915 struct bfd_link_info
*link_info
,
3917 char * target2_type
,
3920 bfd_arm_vfp11_fix vfp11_fix
,
3921 int no_enum_warn
, int pic_veneer
)
3923 struct elf32_arm_link_hash_table
*globals
;
3925 globals
= elf32_arm_hash_table (link_info
);
3927 globals
->target1_is_rel
= target1_is_rel
;
3928 if (strcmp (target2_type
, "rel") == 0)
3929 globals
->target2_reloc
= R_ARM_REL32
;
3930 else if (strcmp (target2_type
, "abs") == 0)
3931 globals
->target2_reloc
= R_ARM_ABS32
;
3932 else if (strcmp (target2_type
, "got-rel") == 0)
3933 globals
->target2_reloc
= R_ARM_GOT_PREL
;
3936 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
3939 globals
->fix_v4bx
= fix_v4bx
;
3940 globals
->use_blx
|= use_blx
;
3941 globals
->vfp11_fix
= vfp11_fix
;
3942 globals
->pic_veneer
= pic_veneer
;
3944 elf32_arm_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
3947 /* The thumb form of a long branch is a bit finicky, because the offset
3948 encoding is split over two fields, each in it's own instruction. They
3949 can occur in any order. So given a thumb form of long branch, and an
3950 offset, insert the offset into the thumb branch and return finished
3953 It takes two thumb instructions to encode the target address. Each has
3954 11 bits to invest. The upper 11 bits are stored in one (identified by
3955 H-0.. see below), the lower 11 bits are stored in the other (identified
3958 Combine together and shifted left by 1 (it's a half word address) and
3962 H-0, upper address-0 = 000
3964 H-1, lower address-0 = 800
3966 They can be ordered either way, but the arm tools I've seen always put
3967 the lower one first. It probably doesn't matter. krk@cygnus.com
3969 XXX: Actually the order does matter. The second instruction (H-1)
3970 moves the computed address into the PC, so it must be the second one
3971 in the sequence. The problem, however is that whilst little endian code
3972 stores the instructions in HI then LOW order, big endian code does the
3973 reverse. nickc@cygnus.com. */
3975 #define LOW_HI_ORDER 0xF800F000
3976 #define HI_LOW_ORDER 0xF000F800
3979 insert_thumb_branch (insn32 br_insn
, int rel_off
)
3981 unsigned int low_bits
;
3982 unsigned int high_bits
;
3984 BFD_ASSERT ((rel_off
& 1) != 1);
3986 rel_off
>>= 1; /* Half word aligned address. */
3987 low_bits
= rel_off
& 0x000007FF; /* The bottom 11 bits. */
3988 high_bits
= (rel_off
>> 11) & 0x000007FF; /* The top 11 bits. */
3990 if ((br_insn
& LOW_HI_ORDER
) == LOW_HI_ORDER
)
3991 br_insn
= LOW_HI_ORDER
| (low_bits
<< 16) | high_bits
;
3992 else if ((br_insn
& HI_LOW_ORDER
) == HI_LOW_ORDER
)
3993 br_insn
= HI_LOW_ORDER
| (high_bits
<< 16) | low_bits
;
3995 /* FIXME: abort is probably not the right call. krk@cygnus.com */
3996 abort (); /* Error - not a valid branch instruction form. */
4002 /* Store an Arm insn into an output section not processed by
4003 elf32_arm_write_section. */
4006 put_arm_insn (struct elf32_arm_link_hash_table
*htab
,
4007 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
4009 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
4010 bfd_putl32 (val
, ptr
);
4012 bfd_putb32 (val
, ptr
);
4016 /* Store a 16-bit Thumb insn into an output section not processed by
4017 elf32_arm_write_section. */
4020 put_thumb_insn (struct elf32_arm_link_hash_table
*htab
,
4021 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
4023 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
4024 bfd_putl16 (val
, ptr
);
4026 bfd_putb16 (val
, ptr
);
4030 /* Thumb code calling an ARM function. */
4033 elf32_thumb_to_arm_stub (struct bfd_link_info
* info
,
4037 asection
* input_section
,
4038 bfd_byte
* hit_data
,
4041 bfd_signed_vma addend
,
4043 char **error_message
)
4047 unsigned long int tmp
;
4048 long int ret_offset
;
4049 struct elf_link_hash_entry
* myh
;
4050 struct elf32_arm_link_hash_table
* globals
;
4052 myh
= find_thumb_glue (info
, name
, error_message
);
4056 globals
= elf32_arm_hash_table (info
);
4058 BFD_ASSERT (globals
!= NULL
);
4059 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4061 my_offset
= myh
->root
.u
.def
.value
;
4063 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4064 THUMB2ARM_GLUE_SECTION_NAME
);
4066 BFD_ASSERT (s
!= NULL
);
4067 BFD_ASSERT (s
->contents
!= NULL
);
4068 BFD_ASSERT (s
->output_section
!= NULL
);
4070 if ((my_offset
& 0x01) == 0x01)
4073 && sym_sec
->owner
!= NULL
4074 && !INTERWORK_FLAG (sym_sec
->owner
))
4076 (*_bfd_error_handler
)
4077 (_("%B(%s): warning: interworking not enabled.\n"
4078 " first occurrence: %B: thumb call to arm"),
4079 sym_sec
->owner
, input_bfd
, name
);
4085 myh
->root
.u
.def
.value
= my_offset
;
4087 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a1_bx_pc_insn
,
4088 s
->contents
+ my_offset
);
4090 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a2_noop_insn
,
4091 s
->contents
+ my_offset
+ 2);
4094 /* Address of destination of the stub. */
4095 ((bfd_signed_vma
) val
)
4097 /* Offset from the start of the current section
4098 to the start of the stubs. */
4100 /* Offset of the start of this stub from the start of the stubs. */
4102 /* Address of the start of the current section. */
4103 + s
->output_section
->vma
)
4104 /* The branch instruction is 4 bytes into the stub. */
4106 /* ARM branches work from the pc of the instruction + 8. */
4109 put_arm_insn (globals
, output_bfd
,
4110 (bfd_vma
) t2a3_b_insn
| ((ret_offset
>> 2) & 0x00FFFFFF),
4111 s
->contents
+ my_offset
+ 4);
4114 BFD_ASSERT (my_offset
<= globals
->thumb_glue_size
);
4116 /* Now go back and fix up the original BL insn to point to here. */
4118 /* Address of where the stub is located. */
4119 (s
->output_section
->vma
+ s
->output_offset
+ my_offset
)
4120 /* Address of where the BL is located. */
4121 - (input_section
->output_section
->vma
+ input_section
->output_offset
4123 /* Addend in the relocation. */
4125 /* Biassing for PC-relative addressing. */
4128 tmp
= bfd_get_32 (input_bfd
, hit_data
4129 - input_section
->vma
);
4131 bfd_put_32 (output_bfd
,
4132 (bfd_vma
) insert_thumb_branch (tmp
, ret_offset
),
4133 hit_data
- input_section
->vma
);
4138 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
4140 static struct elf_link_hash_entry
*
4141 elf32_arm_create_thumb_stub (struct bfd_link_info
* info
,
4148 char **error_message
)
4151 long int ret_offset
;
4152 struct elf_link_hash_entry
* myh
;
4153 struct elf32_arm_link_hash_table
* globals
;
4155 myh
= find_arm_glue (info
, name
, error_message
);
4159 globals
= elf32_arm_hash_table (info
);
4161 BFD_ASSERT (globals
!= NULL
);
4162 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4164 my_offset
= myh
->root
.u
.def
.value
;
4166 if ((my_offset
& 0x01) == 0x01)
4169 && sym_sec
->owner
!= NULL
4170 && !INTERWORK_FLAG (sym_sec
->owner
))
4172 (*_bfd_error_handler
)
4173 (_("%B(%s): warning: interworking not enabled.\n"
4174 " first occurrence: %B: arm call to thumb"),
4175 sym_sec
->owner
, input_bfd
, name
);
4179 myh
->root
.u
.def
.value
= my_offset
;
4181 if (info
->shared
|| globals
->root
.is_relocatable_executable
4182 || globals
->pic_veneer
)
4184 /* For relocatable objects we can't use absolute addresses,
4185 so construct the address from a relative offset. */
4186 /* TODO: If the offset is small it's probably worth
4187 constructing the address with adds. */
4188 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1p_ldr_insn
,
4189 s
->contents
+ my_offset
);
4190 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2p_add_pc_insn
,
4191 s
->contents
+ my_offset
+ 4);
4192 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t3p_bx_r12_insn
,
4193 s
->contents
+ my_offset
+ 8);
4194 /* Adjust the offset by 4 for the position of the add,
4195 and 8 for the pipeline offset. */
4196 ret_offset
= (val
- (s
->output_offset
4197 + s
->output_section
->vma
4200 bfd_put_32 (output_bfd
, ret_offset
,
4201 s
->contents
+ my_offset
+ 12);
4203 else if (globals
->use_blx
)
4205 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1v5_ldr_insn
,
4206 s
->contents
+ my_offset
);
4208 /* It's a thumb address. Add the low order bit. */
4209 bfd_put_32 (output_bfd
, val
| a2t2v5_func_addr_insn
,
4210 s
->contents
+ my_offset
+ 4);
4214 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1_ldr_insn
,
4215 s
->contents
+ my_offset
);
4217 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2_bx_r12_insn
,
4218 s
->contents
+ my_offset
+ 4);
4220 /* It's a thumb address. Add the low order bit. */
4221 bfd_put_32 (output_bfd
, val
| a2t3_func_addr_insn
,
4222 s
->contents
+ my_offset
+ 8);
4226 BFD_ASSERT (my_offset
<= globals
->arm_glue_size
);
4231 /* Arm code calling a Thumb function. */
4234 elf32_arm_to_thumb_stub (struct bfd_link_info
* info
,
4238 asection
* input_section
,
4239 bfd_byte
* hit_data
,
4242 bfd_signed_vma addend
,
4244 char **error_message
)
4246 unsigned long int tmp
;
4249 long int ret_offset
;
4250 struct elf_link_hash_entry
* myh
;
4251 struct elf32_arm_link_hash_table
* globals
;
4253 globals
= elf32_arm_hash_table (info
);
4255 BFD_ASSERT (globals
!= NULL
);
4256 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4258 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4259 ARM2THUMB_GLUE_SECTION_NAME
);
4260 BFD_ASSERT (s
!= NULL
);
4261 BFD_ASSERT (s
->contents
!= NULL
);
4262 BFD_ASSERT (s
->output_section
!= NULL
);
4264 myh
= elf32_arm_create_thumb_stub (info
, name
, input_bfd
, output_bfd
,
4265 sym_sec
, val
, s
, error_message
);
4269 my_offset
= myh
->root
.u
.def
.value
;
4270 tmp
= bfd_get_32 (input_bfd
, hit_data
);
4271 tmp
= tmp
& 0xFF000000;
4273 /* Somehow these are both 4 too far, so subtract 8. */
4274 ret_offset
= (s
->output_offset
4276 + s
->output_section
->vma
4277 - (input_section
->output_offset
4278 + input_section
->output_section
->vma
4282 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
4284 bfd_put_32 (output_bfd
, (bfd_vma
) tmp
, hit_data
- input_section
->vma
);
4289 /* Populate Arm stub for an exported Thumb function. */
4292 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry
*h
, void * inf
)
4294 struct bfd_link_info
* info
= (struct bfd_link_info
*) inf
;
4296 struct elf_link_hash_entry
* myh
;
4297 struct elf32_arm_link_hash_entry
*eh
;
4298 struct elf32_arm_link_hash_table
* globals
;
4301 char *error_message
;
4303 eh
= elf32_arm_hash_entry(h
);
4304 /* Allocate stubs for exported Thumb functions on v4t. */
4305 if (eh
->export_glue
== NULL
)
4308 globals
= elf32_arm_hash_table (info
);
4310 BFD_ASSERT (globals
!= NULL
);
4311 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4313 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4314 ARM2THUMB_GLUE_SECTION_NAME
);
4315 BFD_ASSERT (s
!= NULL
);
4316 BFD_ASSERT (s
->contents
!= NULL
);
4317 BFD_ASSERT (s
->output_section
!= NULL
);
4319 sec
= eh
->export_glue
->root
.u
.def
.section
;
4321 BFD_ASSERT (sec
->output_section
!= NULL
);
4323 val
= eh
->export_glue
->root
.u
.def
.value
+ sec
->output_offset
4324 + sec
->output_section
->vma
;
4325 myh
= elf32_arm_create_thumb_stub (info
, h
->root
.root
.string
,
4326 h
->root
.u
.def
.section
->owner
,
4327 globals
->obfd
, sec
, val
, s
,
4333 /* Generate Arm stubs for exported Thumb symbols. */
4335 elf32_arm_begin_write_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
4336 struct bfd_link_info
*link_info
)
4338 struct elf32_arm_link_hash_table
* globals
;
4343 globals
= elf32_arm_hash_table (link_info
);
4344 /* If blx is available then exported Thumb symbols are OK and there is
4346 if (globals
->use_blx
)
4349 elf_link_hash_traverse (&globals
->root
, elf32_arm_to_thumb_export_stub
,
4353 /* Some relocations map to different relocations depending on the
4354 target. Return the real relocation. */
4356 arm_real_reloc_type (struct elf32_arm_link_hash_table
* globals
,
4362 if (globals
->target1_is_rel
)
4368 return globals
->target2_reloc
;
4375 /* Return the base VMA address which should be subtracted from real addresses
4376 when resolving @dtpoff relocation.
4377 This is PT_TLS segment p_vaddr. */
4380 dtpoff_base (struct bfd_link_info
*info
)
4382 /* If tls_sec is NULL, we should have signalled an error already. */
4383 if (elf_hash_table (info
)->tls_sec
== NULL
)
4385 return elf_hash_table (info
)->tls_sec
->vma
;
4388 /* Return the relocation value for @tpoff relocation
4389 if STT_TLS virtual address is ADDRESS. */
4392 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
4394 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4397 /* If tls_sec is NULL, we should have signalled an error already. */
4398 if (htab
->tls_sec
== NULL
)
4400 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
4401 return address
- htab
->tls_sec
->vma
+ base
;
4404 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
4405 VALUE is the relocation value. */
4407 static bfd_reloc_status_type
4408 elf32_arm_abs12_reloc (bfd
*abfd
, void *data
, bfd_vma value
)
4411 return bfd_reloc_overflow
;
4413 value
|= bfd_get_32 (abfd
, data
) & 0xfffff000;
4414 bfd_put_32 (abfd
, value
, data
);
4415 return bfd_reloc_ok
;
4418 /* For a given value of n, calculate the value of G_n as required to
4419 deal with group relocations. We return it in the form of an
4420 encoded constant-and-rotation, together with the final residual. If n is
4421 specified as less than zero, then final_residual is filled with the
4422 input value and no further action is performed. */
4425 calculate_group_reloc_mask (bfd_vma value
, int n
, bfd_vma
*final_residual
)
4429 bfd_vma encoded_g_n
= 0;
4430 bfd_vma residual
= value
; /* Also known as Y_n. */
4432 for (current_n
= 0; current_n
<= n
; current_n
++)
4436 /* Calculate which part of the value to mask. */
4443 /* Determine the most significant bit in the residual and
4444 align the resulting value to a 2-bit boundary. */
4445 for (msb
= 30; msb
>= 0; msb
-= 2)
4446 if (residual
& (3 << msb
))
4449 /* The desired shift is now (msb - 6), or zero, whichever
4456 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
4457 g_n
= residual
& (0xff << shift
);
4458 encoded_g_n
= (g_n
>> shift
)
4459 | ((g_n
<= 0xff ? 0 : (32 - shift
) / 2) << 8);
4461 /* Calculate the residual for the next time around. */
4465 *final_residual
= residual
;
4470 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
4471 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
4473 identify_add_or_sub(bfd_vma insn
)
4475 int opcode
= insn
& 0x1e00000;
4477 if (opcode
== 1 << 23) /* ADD */
4480 if (opcode
== 1 << 22) /* SUB */
4486 /* Determine if we're dealing with a Thumb-2 object. */
4488 static int using_thumb2 (struct elf32_arm_link_hash_table
*globals
)
4490 int arch
= elf32_arm_get_eabi_attr_int (globals
->obfd
, Tag_CPU_arch
);
4491 return arch
== TAG_CPU_ARCH_V6T2
|| arch
>= TAG_CPU_ARCH_V7
;
4494 /* Perform a relocation as part of a final link. */
4496 static bfd_reloc_status_type
4497 elf32_arm_final_link_relocate (reloc_howto_type
* howto
,
4500 asection
* input_section
,
4501 bfd_byte
* contents
,
4502 Elf_Internal_Rela
* rel
,
4504 struct bfd_link_info
* info
,
4506 const char * sym_name
,
4508 struct elf_link_hash_entry
* h
,
4509 bfd_boolean
* unresolved_reloc_p
,
4510 char **error_message
)
4512 unsigned long r_type
= howto
->type
;
4513 unsigned long r_symndx
;
4514 bfd_byte
* hit_data
= contents
+ rel
->r_offset
;
4515 bfd
* dynobj
= NULL
;
4516 Elf_Internal_Shdr
* symtab_hdr
;
4517 struct elf_link_hash_entry
** sym_hashes
;
4518 bfd_vma
* local_got_offsets
;
4519 asection
* sgot
= NULL
;
4520 asection
* splt
= NULL
;
4521 asection
* sreloc
= NULL
;
4523 bfd_signed_vma signed_addend
;
4524 struct elf32_arm_link_hash_table
* globals
;
4526 globals
= elf32_arm_hash_table (info
);
4528 /* Some relocation type map to different relocations depending on the
4529 target. We pick the right one here. */
4530 r_type
= arm_real_reloc_type (globals
, r_type
);
4531 if (r_type
!= howto
->type
)
4532 howto
= elf32_arm_howto_from_type (r_type
);
4534 /* If the start address has been set, then set the EF_ARM_HASENTRY
4535 flag. Setting this more than once is redundant, but the cost is
4536 not too high, and it keeps the code simple.
4538 The test is done here, rather than somewhere else, because the
4539 start address is only set just before the final link commences.
4541 Note - if the user deliberately sets a start address of 0, the
4542 flag will not be set. */
4543 if (bfd_get_start_address (output_bfd
) != 0)
4544 elf_elfheader (output_bfd
)->e_flags
|= EF_ARM_HASENTRY
;
4546 dynobj
= elf_hash_table (info
)->dynobj
;
4549 sgot
= bfd_get_section_by_name (dynobj
, ".got");
4550 splt
= bfd_get_section_by_name (dynobj
, ".plt");
4552 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
4553 sym_hashes
= elf_sym_hashes (input_bfd
);
4554 local_got_offsets
= elf_local_got_offsets (input_bfd
);
4555 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4557 if (globals
->use_rel
)
4559 addend
= bfd_get_32 (input_bfd
, hit_data
) & howto
->src_mask
;
4561 if (addend
& ((howto
->src_mask
+ 1) >> 1))
4564 signed_addend
&= ~ howto
->src_mask
;
4565 signed_addend
|= addend
;
4568 signed_addend
= addend
;
4571 addend
= signed_addend
= rel
->r_addend
;
4576 /* We don't need to find a value for this symbol. It's just a
4578 *unresolved_reloc_p
= FALSE
;
4579 return bfd_reloc_ok
;
4582 if (!globals
->vxworks_p
)
4583 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
4587 case R_ARM_ABS32_NOI
:
4589 case R_ARM_REL32_NOI
:
4595 /* Handle relocations which should use the PLT entry. ABS32/REL32
4596 will use the symbol's value, which may point to a PLT entry, but we
4597 don't need to handle that here. If we created a PLT entry, all
4598 branches in this object should go to it. */
4599 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
4600 && r_type
!= R_ARM_ABS32_NOI
&& r_type
!= R_ARM_REL32_NOI
)
4603 && h
->plt
.offset
!= (bfd_vma
) -1)
4605 /* If we've created a .plt section, and assigned a PLT entry to
4606 this function, it should not be known to bind locally. If
4607 it were, we would have cleared the PLT entry. */
4608 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
4610 value
= (splt
->output_section
->vma
4611 + splt
->output_offset
4613 *unresolved_reloc_p
= FALSE
;
4614 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4615 contents
, rel
->r_offset
, value
,
4619 /* When generating a shared object or relocatable executable, these
4620 relocations are copied into the output file to be resolved at
4622 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
4623 && (input_section
->flags
& SEC_ALLOC
)
4624 && ((r_type
!= R_ARM_REL32
&& r_type
!= R_ARM_REL32_NOI
)
4625 || !SYMBOL_CALLS_LOCAL (info
, h
))
4627 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4628 || h
->root
.type
!= bfd_link_hash_undefweak
)
4629 && r_type
!= R_ARM_PC24
4630 && r_type
!= R_ARM_CALL
4631 && r_type
!= R_ARM_JUMP24
4632 && r_type
!= R_ARM_PREL31
4633 && r_type
!= R_ARM_PLT32
)
4635 Elf_Internal_Rela outrel
;
4637 bfd_boolean skip
, relocate
;
4639 *unresolved_reloc_p
= FALSE
;
4645 name
= (bfd_elf_string_from_elf_section
4647 elf_elfheader (input_bfd
)->e_shstrndx
,
4648 elf_section_data (input_section
)->rel_hdr
.sh_name
));
4650 return bfd_reloc_notsupported
;
4652 BFD_ASSERT (reloc_section_p (globals
, name
, input_section
));
4654 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4655 BFD_ASSERT (sreloc
!= NULL
);
4661 outrel
.r_addend
= addend
;
4663 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
4665 if (outrel
.r_offset
== (bfd_vma
) -1)
4667 else if (outrel
.r_offset
== (bfd_vma
) -2)
4668 skip
= TRUE
, relocate
= TRUE
;
4669 outrel
.r_offset
+= (input_section
->output_section
->vma
4670 + input_section
->output_offset
);
4673 memset (&outrel
, 0, sizeof outrel
);
4678 || !h
->def_regular
))
4679 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
4684 /* This symbol is local, or marked to become local. */
4685 if (sym_flags
== STT_ARM_TFUNC
)
4687 if (globals
->symbian_p
)
4691 /* On Symbian OS, the data segment and text segement
4692 can be relocated independently. Therefore, we
4693 must indicate the segment to which this
4694 relocation is relative. The BPABI allows us to
4695 use any symbol in the right segment; we just use
4696 the section symbol as it is convenient. (We
4697 cannot use the symbol given by "h" directly as it
4698 will not appear in the dynamic symbol table.)
4700 Note that the dynamic linker ignores the section
4701 symbol value, so we don't subtract osec->vma
4702 from the emitted reloc addend. */
4704 osec
= sym_sec
->output_section
;
4706 osec
= input_section
->output_section
;
4707 symbol
= elf_section_data (osec
)->dynindx
;
4710 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4712 if ((osec
->flags
& SEC_READONLY
) == 0
4713 && htab
->data_index_section
!= NULL
)
4714 osec
= htab
->data_index_section
;
4716 osec
= htab
->text_index_section
;
4717 symbol
= elf_section_data (osec
)->dynindx
;
4719 BFD_ASSERT (symbol
!= 0);
4722 /* On SVR4-ish systems, the dynamic loader cannot
4723 relocate the text and data segments independently,
4724 so the symbol does not matter. */
4726 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
4727 if (globals
->use_rel
)
4730 outrel
.r_addend
+= value
;
4733 loc
= sreloc
->contents
;
4734 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
4735 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4737 /* If this reloc is against an external symbol, we do not want to
4738 fiddle with the addend. Otherwise, we need to include the symbol
4739 value so that it becomes an addend for the dynamic reloc. */
4741 return bfd_reloc_ok
;
4743 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4744 contents
, rel
->r_offset
, value
,
4747 else switch (r_type
)
4750 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
4752 case R_ARM_XPC25
: /* Arm BLX instruction. */
4755 case R_ARM_PC24
: /* Arm B/BL instruction */
4757 if (r_type
== R_ARM_XPC25
)
4759 /* Check for Arm calling Arm function. */
4760 /* FIXME: Should we translate the instruction into a BL
4761 instruction instead ? */
4762 if (sym_flags
!= STT_ARM_TFUNC
)
4763 (*_bfd_error_handler
)
4764 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
4766 h
? h
->root
.root
.string
: "(local)");
4768 else if (r_type
!= R_ARM_CALL
|| !globals
->use_blx
)
4770 /* Check for Arm calling Thumb function. */
4771 if (sym_flags
== STT_ARM_TFUNC
)
4773 if (elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
4774 output_bfd
, input_section
,
4775 hit_data
, sym_sec
, rel
->r_offset
,
4776 signed_addend
, value
,
4778 return bfd_reloc_ok
;
4780 return bfd_reloc_dangerous
;
4784 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
4786 S is the address of the symbol in the relocation.
4787 P is address of the instruction being relocated.
4788 A is the addend (extracted from the instruction) in bytes.
4790 S is held in 'value'.
4791 P is the base address of the section containing the
4792 instruction plus the offset of the reloc into that
4794 (input_section->output_section->vma +
4795 input_section->output_offset +
4797 A is the addend, converted into bytes, ie:
4800 Note: None of these operations have knowledge of the pipeline
4801 size of the processor, thus it is up to the assembler to
4802 encode this information into the addend. */
4803 value
-= (input_section
->output_section
->vma
4804 + input_section
->output_offset
);
4805 value
-= rel
->r_offset
;
4806 if (globals
->use_rel
)
4807 value
+= (signed_addend
<< howto
->size
);
4809 /* RELA addends do not have to be adjusted by howto->size. */
4810 value
+= signed_addend
;
4812 signed_addend
= value
;
4813 signed_addend
>>= howto
->rightshift
;
4815 /* It is not an error for an undefined weak reference to be
4816 out of range. Any program that branches to such a symbol
4817 is going to crash anyway, so there is no point worrying
4818 about getting the destination exactly right. */
4819 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
4821 /* Perform a signed range check. */
4822 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
4823 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
4824 return bfd_reloc_overflow
;
4827 addend
= (value
& 2);
4829 value
= (signed_addend
& howto
->dst_mask
)
4830 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
4832 /* Set the H bit in the BLX instruction. */
4833 if (sym_flags
== STT_ARM_TFUNC
)
4838 value
&= ~(bfd_vma
)(1 << 24);
4840 if (r_type
== R_ARM_CALL
)
4842 /* Select the correct instruction (BL or BLX). */
4843 if (sym_flags
== STT_ARM_TFUNC
)
4847 value
&= ~(bfd_vma
)(1 << 28);
4855 if (sym_flags
== STT_ARM_TFUNC
)
4859 case R_ARM_ABS32_NOI
:
4865 if (sym_flags
== STT_ARM_TFUNC
)
4867 value
-= (input_section
->output_section
->vma
4868 + input_section
->output_offset
+ rel
->r_offset
);
4871 case R_ARM_REL32_NOI
:
4873 value
-= (input_section
->output_section
->vma
4874 + input_section
->output_offset
+ rel
->r_offset
);
4878 value
-= (input_section
->output_section
->vma
4879 + input_section
->output_offset
+ rel
->r_offset
);
4880 value
+= signed_addend
;
4881 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
4883 /* Check for overflow */
4884 if ((value
^ (value
>> 1)) & (1 << 30))
4885 return bfd_reloc_overflow
;
4887 value
&= 0x7fffffff;
4888 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
4889 if (sym_flags
== STT_ARM_TFUNC
)
4894 bfd_put_32 (input_bfd
, value
, hit_data
);
4895 return bfd_reloc_ok
;
4899 if ((long) value
> 0x7f || (long) value
< -0x80)
4900 return bfd_reloc_overflow
;
4902 bfd_put_8 (input_bfd
, value
, hit_data
);
4903 return bfd_reloc_ok
;
4908 if ((long) value
> 0x7fff || (long) value
< -0x8000)
4909 return bfd_reloc_overflow
;
4911 bfd_put_16 (input_bfd
, value
, hit_data
);
4912 return bfd_reloc_ok
;
4914 case R_ARM_THM_ABS5
:
4915 /* Support ldr and str instructions for the thumb. */
4916 if (globals
->use_rel
)
4918 /* Need to refetch addend. */
4919 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
4920 /* ??? Need to determine shift amount from operand size. */
4921 addend
>>= howto
->rightshift
;
4925 /* ??? Isn't value unsigned? */
4926 if ((long) value
> 0x1f || (long) value
< -0x10)
4927 return bfd_reloc_overflow
;
4929 /* ??? Value needs to be properly shifted into place first. */
4930 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
4931 bfd_put_16 (input_bfd
, value
, hit_data
);
4932 return bfd_reloc_ok
;
4934 case R_ARM_THM_ALU_PREL_11_0
:
4935 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
4938 bfd_signed_vma relocation
;
4940 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
4941 | bfd_get_16 (input_bfd
, hit_data
+ 2);
4943 if (globals
->use_rel
)
4945 signed_addend
= (insn
& 0xff) | ((insn
& 0x7000) >> 4)
4946 | ((insn
& (1 << 26)) >> 15);
4947 if (insn
& 0xf00000)
4948 signed_addend
= -signed_addend
;
4951 relocation
= value
+ signed_addend
;
4952 relocation
-= (input_section
->output_section
->vma
4953 + input_section
->output_offset
4956 value
= abs (relocation
);
4958 if (value
>= 0x1000)
4959 return bfd_reloc_overflow
;
4961 insn
= (insn
& 0xfb0f8f00) | (value
& 0xff)
4962 | ((value
& 0x700) << 4)
4963 | ((value
& 0x800) << 15);
4967 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4968 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4970 return bfd_reloc_ok
;
4973 case R_ARM_THM_PC12
:
4974 /* Corresponds to: ldr.w reg, [pc, #offset]. */
4977 bfd_signed_vma relocation
;
4979 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
4980 | bfd_get_16 (input_bfd
, hit_data
+ 2);
4982 if (globals
->use_rel
)
4984 signed_addend
= insn
& 0xfff;
4985 if (!(insn
& (1 << 23)))
4986 signed_addend
= -signed_addend
;
4989 relocation
= value
+ signed_addend
;
4990 relocation
-= (input_section
->output_section
->vma
4991 + input_section
->output_offset
4994 value
= abs (relocation
);
4996 if (value
>= 0x1000)
4997 return bfd_reloc_overflow
;
4999 insn
= (insn
& 0xff7ff000) | value
;
5000 if (relocation
>= 0)
5003 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
5004 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
5006 return bfd_reloc_ok
;
5009 case R_ARM_THM_XPC22
:
5010 case R_ARM_THM_CALL
:
5011 /* Thumb BL (branch long instruction). */
5015 bfd_boolean overflow
= FALSE
;
5016 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
5017 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
5018 bfd_signed_vma reloc_signed_max
;
5019 bfd_signed_vma reloc_signed_min
;
5021 bfd_signed_vma signed_check
;
5023 int thumb2
= using_thumb2 (globals
);
5025 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
5026 with Thumb-1) involving the J1 and J2 bits. */
5027 if (globals
->use_rel
)
5029 bfd_vma s
= (upper_insn
& (1 << 10)) >> 10;
5030 bfd_vma upper
= upper_insn
& 0x3ff;
5031 bfd_vma lower
= lower_insn
& 0x7ff;
5032 bfd_vma j1
= (lower_insn
& (1 << 13)) >> 13;
5033 bfd_vma j2
= (lower_insn
& (1 << 11)) >> 11;
5034 bfd_vma i1
= j1
^ s
? 0 : 1;
5035 bfd_vma i2
= j2
^ s
? 0 : 1;
5037 addend
= (i1
<< 23) | (i2
<< 22) | (upper
<< 12) | (lower
<< 1);
5039 addend
= (addend
| ((s
? 0 : 1) << 24)) - (1 << 24);
5041 signed_addend
= addend
;
5044 if (r_type
== R_ARM_THM_XPC22
)
5046 /* Check for Thumb to Thumb call. */
5047 /* FIXME: Should we translate the instruction into a BL
5048 instruction instead ? */
5049 if (sym_flags
== STT_ARM_TFUNC
)
5050 (*_bfd_error_handler
)
5051 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
5053 h
? h
->root
.root
.string
: "(local)");
5057 /* If it is not a call to Thumb, assume call to Arm.
5058 If it is a call relative to a section name, then it is not a
5059 function call at all, but rather a long jump. Calls through
5060 the PLT do not require stubs. */
5061 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
5062 && (h
== NULL
|| splt
== NULL
5063 || h
->plt
.offset
== (bfd_vma
) -1))
5065 if (globals
->use_blx
)
5067 /* Convert BL to BLX. */
5068 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
5070 else if (elf32_thumb_to_arm_stub
5071 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
5072 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
,
5074 return bfd_reloc_ok
;
5076 return bfd_reloc_dangerous
;
5078 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
)
5080 /* Make sure this is a BL. */
5081 lower_insn
|= 0x1800;
5085 /* Handle calls via the PLT. */
5086 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
5088 value
= (splt
->output_section
->vma
5089 + splt
->output_offset
5091 if (globals
->use_blx
)
5093 /* If the Thumb BLX instruction is available, convert the
5094 BL to a BLX instruction to call the ARM-mode PLT entry. */
5095 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
5098 /* Target the Thumb stub before the ARM PLT entry. */
5099 value
-= PLT_THUMB_STUB_SIZE
;
5100 *unresolved_reloc_p
= FALSE
;
5103 relocation
= value
+ signed_addend
;
5105 relocation
-= (input_section
->output_section
->vma
5106 + input_section
->output_offset
5109 check
= relocation
>> howto
->rightshift
;
5111 /* If this is a signed value, the rightshift just dropped
5112 leading 1 bits (assuming twos complement). */
5113 if ((bfd_signed_vma
) relocation
>= 0)
5114 signed_check
= check
;
5116 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
5118 /* Calculate the permissable maximum and minimum values for
5119 this relocation according to whether we're relocating for
5121 bitsize
= howto
->bitsize
;
5124 reloc_signed_max
= ((1 << (bitsize
- 1)) - 1) >> howto
->rightshift
;
5125 reloc_signed_min
= ~reloc_signed_max
;
5127 /* Assumes two's complement. */
5128 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5131 if ((lower_insn
& 0x1800) == 0x0800)
5132 /* For a BLX instruction, make sure that the relocation is rounded up
5133 to a word boundary. This follows the semantics of the instruction
5134 which specifies that bit 1 of the target address will come from bit
5135 1 of the base address. */
5136 relocation
= (relocation
+ 2) & ~ 3;
5138 /* Put RELOCATION back into the insn. Assumes two's complement.
5139 We use the Thumb-2 encoding, which is safe even if dealing with
5140 a Thumb-1 instruction by virtue of our overflow check above. */
5141 reloc_sign
= (signed_check
< 0) ? 1 : 0;
5142 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff)
5143 | ((relocation
>> 12) & 0x3ff)
5144 | (reloc_sign
<< 10);
5145 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x2fff)
5146 | (((!((relocation
>> 23) & 1)) ^ reloc_sign
) << 13)
5147 | (((!((relocation
>> 22) & 1)) ^ reloc_sign
) << 11)
5148 | ((relocation
>> 1) & 0x7ff);
5150 /* Put the relocated value back in the object file: */
5151 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5152 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5154 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5158 case R_ARM_THM_JUMP24
:
5159 /* Thumb32 unconditional branch instruction. */
5162 bfd_boolean overflow
= FALSE
;
5163 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
5164 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
5165 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
5166 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
5168 bfd_signed_vma signed_check
;
5170 /* Need to refetch the addend, reconstruct the top three bits, and glue the
5171 two pieces together. */
5172 if (globals
->use_rel
)
5174 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
5175 bfd_vma hi
= (upper_insn
& 0x03ff);
5176 bfd_vma I1
= (lower_insn
& 0x2000) >> 13;
5177 bfd_vma I2
= (lower_insn
& 0x0800) >> 11;
5178 bfd_vma lo
= (lower_insn
& 0x07ff);
5184 signed_addend
= (S
<< 24) | (I1
<< 23) | (I2
<< 22) | (hi
<< 12) | (lo
<< 1);
5185 signed_addend
-= (1 << 24); /* Sign extend. */
5188 /* ??? Should handle interworking? GCC might someday try to
5189 use this for tail calls. */
5191 relocation
= value
+ signed_addend
;
5192 relocation
-= (input_section
->output_section
->vma
5193 + input_section
->output_offset
5196 check
= relocation
>> howto
->rightshift
;
5198 /* If this is a signed value, the rightshift just dropped
5199 leading 1 bits (assuming twos complement). */
5200 if ((bfd_signed_vma
) relocation
>= 0)
5201 signed_check
= check
;
5203 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
5205 /* Assumes two's complement. */
5206 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5209 /* Put RELOCATION back into the insn. */
5211 bfd_vma S
= (relocation
& 0x01000000) >> 24;
5212 bfd_vma I1
= (relocation
& 0x00800000) >> 23;
5213 bfd_vma I2
= (relocation
& 0x00400000) >> 22;
5214 bfd_vma hi
= (relocation
& 0x003ff000) >> 12;
5215 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
5220 upper_insn
= (upper_insn
& (bfd_vma
) 0xf800) | (S
<< 10) | hi
;
5221 lower_insn
= (lower_insn
& (bfd_vma
) 0xd000) | (I1
<< 13) | (I2
<< 11) | lo
;
5224 /* Put the relocated value back in the object file: */
5225 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5226 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5228 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5231 case R_ARM_THM_JUMP19
:
5232 /* Thumb32 conditional branch instruction. */
5235 bfd_boolean overflow
= FALSE
;
5236 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
5237 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
5238 bfd_signed_vma reloc_signed_max
= 0xffffe;
5239 bfd_signed_vma reloc_signed_min
= -0x100000;
5240 bfd_signed_vma signed_check
;
5242 /* Need to refetch the addend, reconstruct the top three bits,
5243 and squish the two 11 bit pieces together. */
5244 if (globals
->use_rel
)
5246 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
5247 bfd_vma upper
= (upper_insn
& 0x003f);
5248 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
5249 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
5250 bfd_vma lower
= (lower_insn
& 0x07ff);
5255 upper
-= 0x0100; /* Sign extend. */
5257 addend
= (upper
<< 12) | (lower
<< 1);
5258 signed_addend
= addend
;
5261 /* ??? Should handle interworking? GCC might someday try to
5262 use this for tail calls. */
5264 relocation
= value
+ signed_addend
;
5265 relocation
-= (input_section
->output_section
->vma
5266 + input_section
->output_offset
5268 signed_check
= (bfd_signed_vma
) relocation
;
5270 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5273 /* Put RELOCATION back into the insn. */
5275 bfd_vma S
= (relocation
& 0x00100000) >> 20;
5276 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
5277 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
5278 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
5279 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
5281 upper_insn
= (upper_insn
& 0xfbc0) | (S
<< 10) | hi
;
5282 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
5285 /* Put the relocated value back in the object file: */
5286 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5287 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5289 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5292 case R_ARM_THM_JUMP11
:
5293 case R_ARM_THM_JUMP8
:
5294 case R_ARM_THM_JUMP6
:
5295 /* Thumb B (branch) instruction). */
5297 bfd_signed_vma relocation
;
5298 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
5299 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
5300 bfd_signed_vma signed_check
;
5302 /* CZB cannot jump backward. */
5303 if (r_type
== R_ARM_THM_JUMP6
)
5304 reloc_signed_min
= 0;
5306 if (globals
->use_rel
)
5308 /* Need to refetch addend. */
5309 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
5310 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5313 signed_addend
&= ~ howto
->src_mask
;
5314 signed_addend
|= addend
;
5317 signed_addend
= addend
;
5318 /* The value in the insn has been right shifted. We need to
5319 undo this, so that we can perform the address calculation
5320 in terms of bytes. */
5321 signed_addend
<<= howto
->rightshift
;
5323 relocation
= value
+ signed_addend
;
5325 relocation
-= (input_section
->output_section
->vma
5326 + input_section
->output_offset
5329 relocation
>>= howto
->rightshift
;
5330 signed_check
= relocation
;
5332 if (r_type
== R_ARM_THM_JUMP6
)
5333 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
5335 relocation
&= howto
->dst_mask
;
5336 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
5338 bfd_put_16 (input_bfd
, relocation
, hit_data
);
5340 /* Assumes two's complement. */
5341 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5342 return bfd_reloc_overflow
;
5344 return bfd_reloc_ok
;
5347 case R_ARM_ALU_PCREL7_0
:
5348 case R_ARM_ALU_PCREL15_8
:
5349 case R_ARM_ALU_PCREL23_15
:
5354 insn
= bfd_get_32 (input_bfd
, hit_data
);
5355 if (globals
->use_rel
)
5357 /* Extract the addend. */
5358 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
5359 signed_addend
= addend
;
5361 relocation
= value
+ signed_addend
;
5363 relocation
-= (input_section
->output_section
->vma
5364 + input_section
->output_offset
5366 insn
= (insn
& ~0xfff)
5367 | ((howto
->bitpos
<< 7) & 0xf00)
5368 | ((relocation
>> howto
->bitpos
) & 0xff);
5369 bfd_put_32 (input_bfd
, value
, hit_data
);
5371 return bfd_reloc_ok
;
5373 case R_ARM_GNU_VTINHERIT
:
5374 case R_ARM_GNU_VTENTRY
:
5375 return bfd_reloc_ok
;
5377 case R_ARM_GOTOFF32
:
5378 /* Relocation is relative to the start of the
5379 global offset table. */
5381 BFD_ASSERT (sgot
!= NULL
);
5383 return bfd_reloc_notsupported
;
5385 /* If we are addressing a Thumb function, we need to adjust the
5386 address by one, so that attempts to call the function pointer will
5387 correctly interpret it as Thumb code. */
5388 if (sym_flags
== STT_ARM_TFUNC
)
5391 /* Note that sgot->output_offset is not involved in this
5392 calculation. We always want the start of .got. If we
5393 define _GLOBAL_OFFSET_TABLE in a different way, as is
5394 permitted by the ABI, we might have to change this
5396 value
-= sgot
->output_section
->vma
;
5397 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5398 contents
, rel
->r_offset
, value
,
5402 /* Use global offset table as symbol value. */
5403 BFD_ASSERT (sgot
!= NULL
);
5406 return bfd_reloc_notsupported
;
5408 *unresolved_reloc_p
= FALSE
;
5409 value
= sgot
->output_section
->vma
;
5410 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5411 contents
, rel
->r_offset
, value
,
5415 case R_ARM_GOT_PREL
:
5416 /* Relocation is to the entry for this symbol in the
5417 global offset table. */
5419 return bfd_reloc_notsupported
;
5426 off
= h
->got
.offset
;
5427 BFD_ASSERT (off
!= (bfd_vma
) -1);
5428 dyn
= globals
->root
.dynamic_sections_created
;
5430 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
5432 && SYMBOL_REFERENCES_LOCAL (info
, h
))
5433 || (ELF_ST_VISIBILITY (h
->other
)
5434 && h
->root
.type
== bfd_link_hash_undefweak
))
5436 /* This is actually a static link, or it is a -Bsymbolic link
5437 and the symbol is defined locally. We must initialize this
5438 entry in the global offset table. Since the offset must
5439 always be a multiple of 4, we use the least significant bit
5440 to record whether we have initialized it already.
5442 When doing a dynamic link, we create a .rel(a).got relocation
5443 entry to initialize the value. This is done in the
5444 finish_dynamic_symbol routine. */
5449 /* If we are addressing a Thumb function, we need to
5450 adjust the address by one, so that attempts to
5451 call the function pointer will correctly
5452 interpret it as Thumb code. */
5453 if (sym_flags
== STT_ARM_TFUNC
)
5456 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
5461 *unresolved_reloc_p
= FALSE
;
5463 value
= sgot
->output_offset
+ off
;
5469 BFD_ASSERT (local_got_offsets
!= NULL
&&
5470 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
5472 off
= local_got_offsets
[r_symndx
];
5474 /* The offset must always be a multiple of 4. We use the
5475 least significant bit to record whether we have already
5476 generated the necessary reloc. */
5481 /* If we are addressing a Thumb function, we need to
5482 adjust the address by one, so that attempts to
5483 call the function pointer will correctly
5484 interpret it as Thumb code. */
5485 if (sym_flags
== STT_ARM_TFUNC
)
5488 if (globals
->use_rel
)
5489 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
5494 Elf_Internal_Rela outrel
;
5497 srelgot
= (bfd_get_section_by_name
5498 (dynobj
, RELOC_SECTION (globals
, ".got")));
5499 BFD_ASSERT (srelgot
!= NULL
);
5501 outrel
.r_addend
= addend
+ value
;
5502 outrel
.r_offset
= (sgot
->output_section
->vma
5503 + sgot
->output_offset
5505 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
5506 loc
= srelgot
->contents
;
5507 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
5508 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5511 local_got_offsets
[r_symndx
] |= 1;
5514 value
= sgot
->output_offset
+ off
;
5516 if (r_type
!= R_ARM_GOT32
)
5517 value
+= sgot
->output_section
->vma
;
5519 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5520 contents
, rel
->r_offset
, value
,
5523 case R_ARM_TLS_LDO32
:
5524 value
= value
- dtpoff_base (info
);
5526 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5527 contents
, rel
->r_offset
, value
,
5530 case R_ARM_TLS_LDM32
:
5534 if (globals
->sgot
== NULL
)
5537 off
= globals
->tls_ldm_got
.offset
;
5543 /* If we don't know the module number, create a relocation
5547 Elf_Internal_Rela outrel
;
5550 if (globals
->srelgot
== NULL
)
5553 outrel
.r_addend
= 0;
5554 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5555 + globals
->sgot
->output_offset
+ off
);
5556 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
5558 if (globals
->use_rel
)
5559 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5560 globals
->sgot
->contents
+ off
);
5562 loc
= globals
->srelgot
->contents
;
5563 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
5564 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5567 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
5569 globals
->tls_ldm_got
.offset
|= 1;
5572 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
5573 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
5575 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5576 contents
, rel
->r_offset
, value
,
5580 case R_ARM_TLS_GD32
:
5581 case R_ARM_TLS_IE32
:
5587 if (globals
->sgot
== NULL
)
5594 dyn
= globals
->root
.dynamic_sections_created
;
5595 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
5597 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
5599 *unresolved_reloc_p
= FALSE
;
5602 off
= h
->got
.offset
;
5603 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
5607 if (local_got_offsets
== NULL
)
5609 off
= local_got_offsets
[r_symndx
];
5610 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
5613 if (tls_type
== GOT_UNKNOWN
)
5620 bfd_boolean need_relocs
= FALSE
;
5621 Elf_Internal_Rela outrel
;
5622 bfd_byte
*loc
= NULL
;
5625 /* The GOT entries have not been initialized yet. Do it
5626 now, and emit any relocations. If both an IE GOT and a
5627 GD GOT are necessary, we emit the GD first. */
5629 if ((info
->shared
|| indx
!= 0)
5631 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5632 || h
->root
.type
!= bfd_link_hash_undefweak
))
5635 if (globals
->srelgot
== NULL
)
5637 loc
= globals
->srelgot
->contents
;
5638 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
5641 if (tls_type
& GOT_TLS_GD
)
5645 outrel
.r_addend
= 0;
5646 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5647 + globals
->sgot
->output_offset
5649 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
5651 if (globals
->use_rel
)
5652 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5653 globals
->sgot
->contents
+ cur_off
);
5655 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5656 globals
->srelgot
->reloc_count
++;
5657 loc
+= RELOC_SIZE (globals
);
5660 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
5661 globals
->sgot
->contents
+ cur_off
+ 4);
5664 outrel
.r_addend
= 0;
5665 outrel
.r_info
= ELF32_R_INFO (indx
,
5666 R_ARM_TLS_DTPOFF32
);
5667 outrel
.r_offset
+= 4;
5669 if (globals
->use_rel
)
5670 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5671 globals
->sgot
->contents
+ cur_off
+ 4);
5674 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5675 globals
->srelgot
->reloc_count
++;
5676 loc
+= RELOC_SIZE (globals
);
5681 /* If we are not emitting relocations for a
5682 general dynamic reference, then we must be in a
5683 static link or an executable link with the
5684 symbol binding locally. Mark it as belonging
5685 to module 1, the executable. */
5686 bfd_put_32 (output_bfd
, 1,
5687 globals
->sgot
->contents
+ cur_off
);
5688 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
5689 globals
->sgot
->contents
+ cur_off
+ 4);
5695 if (tls_type
& GOT_TLS_IE
)
5700 outrel
.r_addend
= value
- dtpoff_base (info
);
5702 outrel
.r_addend
= 0;
5703 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5704 + globals
->sgot
->output_offset
5706 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
5708 if (globals
->use_rel
)
5709 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5710 globals
->sgot
->contents
+ cur_off
);
5712 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5713 globals
->srelgot
->reloc_count
++;
5714 loc
+= RELOC_SIZE (globals
);
5717 bfd_put_32 (output_bfd
, tpoff (info
, value
),
5718 globals
->sgot
->contents
+ cur_off
);
5725 local_got_offsets
[r_symndx
] |= 1;
5728 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
5730 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
5731 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
5733 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5734 contents
, rel
->r_offset
, value
,
5738 case R_ARM_TLS_LE32
:
5741 (*_bfd_error_handler
)
5742 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
5743 input_bfd
, input_section
,
5744 (long) rel
->r_offset
, howto
->name
);
5748 value
= tpoff (info
, value
);
5750 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5751 contents
, rel
->r_offset
, value
,
5755 if (globals
->fix_v4bx
)
5757 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5759 /* Ensure that we have a BX instruction. */
5760 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
5762 /* Preserve Rm (lowest four bits) and the condition code
5763 (highest four bits). Other bits encode MOV PC,Rm. */
5764 insn
= (insn
& 0xf000000f) | 0x01a0f000;
5766 bfd_put_32 (input_bfd
, insn
, hit_data
);
5768 return bfd_reloc_ok
;
5770 case R_ARM_MOVW_ABS_NC
:
5771 case R_ARM_MOVT_ABS
:
5772 case R_ARM_MOVW_PREL_NC
:
5773 case R_ARM_MOVT_PREL
:
5774 /* Until we properly support segment-base-relative addressing then
5775 we assume the segment base to be zero, as for the group relocations.
5776 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
5777 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
5778 case R_ARM_MOVW_BREL_NC
:
5779 case R_ARM_MOVW_BREL
:
5780 case R_ARM_MOVT_BREL
:
5782 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5784 if (globals
->use_rel
)
5786 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
5787 signed_addend
= (addend
^ 0x10000) - 0x10000;
5790 value
+= signed_addend
;
5792 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
5793 value
-= (input_section
->output_section
->vma
5794 + input_section
->output_offset
+ rel
->r_offset
);
5796 if (r_type
== R_ARM_MOVW_BREL
&& value
>= 0x10000)
5797 return bfd_reloc_overflow
;
5799 if (sym_flags
== STT_ARM_TFUNC
)
5802 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
5803 || r_type
== R_ARM_MOVT_BREL
)
5807 insn
|= value
& 0xfff;
5808 insn
|= (value
& 0xf000) << 4;
5809 bfd_put_32 (input_bfd
, insn
, hit_data
);
5811 return bfd_reloc_ok
;
5813 case R_ARM_THM_MOVW_ABS_NC
:
5814 case R_ARM_THM_MOVT_ABS
:
5815 case R_ARM_THM_MOVW_PREL_NC
:
5816 case R_ARM_THM_MOVT_PREL
:
5817 /* Until we properly support segment-base-relative addressing then
5818 we assume the segment base to be zero, as for the above relocations.
5819 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
5820 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
5821 as R_ARM_THM_MOVT_ABS. */
5822 case R_ARM_THM_MOVW_BREL_NC
:
5823 case R_ARM_THM_MOVW_BREL
:
5824 case R_ARM_THM_MOVT_BREL
:
5828 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
5829 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
5831 if (globals
->use_rel
)
5833 addend
= ((insn
>> 4) & 0xf000)
5834 | ((insn
>> 15) & 0x0800)
5835 | ((insn
>> 4) & 0x0700)
5837 signed_addend
= (addend
^ 0x10000) - 0x10000;
5840 value
+= signed_addend
;
5842 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
5843 value
-= (input_section
->output_section
->vma
5844 + input_section
->output_offset
+ rel
->r_offset
);
5846 if (r_type
== R_ARM_THM_MOVW_BREL
&& value
>= 0x10000)
5847 return bfd_reloc_overflow
;
5849 if (sym_flags
== STT_ARM_TFUNC
)
5852 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
5853 || r_type
== R_ARM_THM_MOVT_BREL
)
5857 insn
|= (value
& 0xf000) << 4;
5858 insn
|= (value
& 0x0800) << 15;
5859 insn
|= (value
& 0x0700) << 4;
5860 insn
|= (value
& 0x00ff);
5862 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
5863 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
5865 return bfd_reloc_ok
;
5867 case R_ARM_ALU_PC_G0_NC
:
5868 case R_ARM_ALU_PC_G1_NC
:
5869 case R_ARM_ALU_PC_G0
:
5870 case R_ARM_ALU_PC_G1
:
5871 case R_ARM_ALU_PC_G2
:
5872 case R_ARM_ALU_SB_G0_NC
:
5873 case R_ARM_ALU_SB_G1_NC
:
5874 case R_ARM_ALU_SB_G0
:
5875 case R_ARM_ALU_SB_G1
:
5876 case R_ARM_ALU_SB_G2
:
5878 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5879 bfd_vma pc
= input_section
->output_section
->vma
5880 + input_section
->output_offset
+ rel
->r_offset
;
5881 /* sb should be the origin of the *segment* containing the symbol.
5882 It is not clear how to obtain this OS-dependent value, so we
5883 make an arbitrary choice of zero. */
5887 bfd_signed_vma signed_value
;
5890 /* Determine which group of bits to select. */
5893 case R_ARM_ALU_PC_G0_NC
:
5894 case R_ARM_ALU_PC_G0
:
5895 case R_ARM_ALU_SB_G0_NC
:
5896 case R_ARM_ALU_SB_G0
:
5900 case R_ARM_ALU_PC_G1_NC
:
5901 case R_ARM_ALU_PC_G1
:
5902 case R_ARM_ALU_SB_G1_NC
:
5903 case R_ARM_ALU_SB_G1
:
5907 case R_ARM_ALU_PC_G2
:
5908 case R_ARM_ALU_SB_G2
:
5916 /* If REL, extract the addend from the insn. If RELA, it will
5917 have already been fetched for us. */
5918 if (globals
->use_rel
)
5921 bfd_vma constant
= insn
& 0xff;
5922 bfd_vma rotation
= (insn
& 0xf00) >> 8;
5925 signed_addend
= constant
;
5928 /* Compensate for the fact that in the instruction, the
5929 rotation is stored in multiples of 2 bits. */
5932 /* Rotate "constant" right by "rotation" bits. */
5933 signed_addend
= (constant
>> rotation
) |
5934 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
5937 /* Determine if the instruction is an ADD or a SUB.
5938 (For REL, this determines the sign of the addend.) */
5939 negative
= identify_add_or_sub (insn
);
5942 (*_bfd_error_handler
)
5943 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
5944 input_bfd
, input_section
,
5945 (long) rel
->r_offset
, howto
->name
);
5946 return bfd_reloc_overflow
;
5949 signed_addend
*= negative
;
5952 /* Compute the value (X) to go in the place. */
5953 if (r_type
== R_ARM_ALU_PC_G0_NC
5954 || r_type
== R_ARM_ALU_PC_G1_NC
5955 || r_type
== R_ARM_ALU_PC_G0
5956 || r_type
== R_ARM_ALU_PC_G1
5957 || r_type
== R_ARM_ALU_PC_G2
)
5959 signed_value
= value
- pc
+ signed_addend
;
5961 /* Section base relative. */
5962 signed_value
= value
- sb
+ signed_addend
;
5964 /* If the target symbol is a Thumb function, then set the
5965 Thumb bit in the address. */
5966 if (sym_flags
== STT_ARM_TFUNC
)
5969 /* Calculate the value of the relevant G_n, in encoded
5970 constant-with-rotation format. */
5971 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
5974 /* Check for overflow if required. */
5975 if ((r_type
== R_ARM_ALU_PC_G0
5976 || r_type
== R_ARM_ALU_PC_G1
5977 || r_type
== R_ARM_ALU_PC_G2
5978 || r_type
== R_ARM_ALU_SB_G0
5979 || r_type
== R_ARM_ALU_SB_G1
5980 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
5982 (*_bfd_error_handler
)
5983 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5984 input_bfd
, input_section
,
5985 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5986 return bfd_reloc_overflow
;
5989 /* Mask out the value and the ADD/SUB part of the opcode; take care
5990 not to destroy the S bit. */
5993 /* Set the opcode according to whether the value to go in the
5994 place is negative. */
5995 if (signed_value
< 0)
6000 /* Encode the offset. */
6003 bfd_put_32 (input_bfd
, insn
, hit_data
);
6005 return bfd_reloc_ok
;
6007 case R_ARM_LDR_PC_G0
:
6008 case R_ARM_LDR_PC_G1
:
6009 case R_ARM_LDR_PC_G2
:
6010 case R_ARM_LDR_SB_G0
:
6011 case R_ARM_LDR_SB_G1
:
6012 case R_ARM_LDR_SB_G2
:
6014 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6015 bfd_vma pc
= input_section
->output_section
->vma
6016 + input_section
->output_offset
+ rel
->r_offset
;
6017 bfd_vma sb
= 0; /* See note above. */
6019 bfd_signed_vma signed_value
;
6022 /* Determine which groups of bits to calculate. */
6025 case R_ARM_LDR_PC_G0
:
6026 case R_ARM_LDR_SB_G0
:
6030 case R_ARM_LDR_PC_G1
:
6031 case R_ARM_LDR_SB_G1
:
6035 case R_ARM_LDR_PC_G2
:
6036 case R_ARM_LDR_SB_G2
:
6044 /* If REL, extract the addend from the insn. If RELA, it will
6045 have already been fetched for us. */
6046 if (globals
->use_rel
)
6048 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6049 signed_addend
= negative
* (insn
& 0xfff);
6052 /* Compute the value (X) to go in the place. */
6053 if (r_type
== R_ARM_LDR_PC_G0
6054 || r_type
== R_ARM_LDR_PC_G1
6055 || r_type
== R_ARM_LDR_PC_G2
)
6057 signed_value
= value
- pc
+ signed_addend
;
6059 /* Section base relative. */
6060 signed_value
= value
- sb
+ signed_addend
;
6062 /* Calculate the value of the relevant G_{n-1} to obtain
6063 the residual at that stage. */
6064 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6066 /* Check for overflow. */
6067 if (residual
>= 0x1000)
6069 (*_bfd_error_handler
)
6070 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6071 input_bfd
, input_section
,
6072 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6073 return bfd_reloc_overflow
;
6076 /* Mask out the value and U bit. */
6079 /* Set the U bit if the value to go in the place is non-negative. */
6080 if (signed_value
>= 0)
6083 /* Encode the offset. */
6086 bfd_put_32 (input_bfd
, insn
, hit_data
);
6088 return bfd_reloc_ok
;
6090 case R_ARM_LDRS_PC_G0
:
6091 case R_ARM_LDRS_PC_G1
:
6092 case R_ARM_LDRS_PC_G2
:
6093 case R_ARM_LDRS_SB_G0
:
6094 case R_ARM_LDRS_SB_G1
:
6095 case R_ARM_LDRS_SB_G2
:
6097 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6098 bfd_vma pc
= input_section
->output_section
->vma
6099 + input_section
->output_offset
+ rel
->r_offset
;
6100 bfd_vma sb
= 0; /* See note above. */
6102 bfd_signed_vma signed_value
;
6105 /* Determine which groups of bits to calculate. */
6108 case R_ARM_LDRS_PC_G0
:
6109 case R_ARM_LDRS_SB_G0
:
6113 case R_ARM_LDRS_PC_G1
:
6114 case R_ARM_LDRS_SB_G1
:
6118 case R_ARM_LDRS_PC_G2
:
6119 case R_ARM_LDRS_SB_G2
:
6127 /* If REL, extract the addend from the insn. If RELA, it will
6128 have already been fetched for us. */
6129 if (globals
->use_rel
)
6131 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6132 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
6135 /* Compute the value (X) to go in the place. */
6136 if (r_type
== R_ARM_LDRS_PC_G0
6137 || r_type
== R_ARM_LDRS_PC_G1
6138 || r_type
== R_ARM_LDRS_PC_G2
)
6140 signed_value
= value
- pc
+ signed_addend
;
6142 /* Section base relative. */
6143 signed_value
= value
- sb
+ signed_addend
;
6145 /* Calculate the value of the relevant G_{n-1} to obtain
6146 the residual at that stage. */
6147 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6149 /* Check for overflow. */
6150 if (residual
>= 0x100)
6152 (*_bfd_error_handler
)
6153 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6154 input_bfd
, input_section
,
6155 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6156 return bfd_reloc_overflow
;
6159 /* Mask out the value and U bit. */
6162 /* Set the U bit if the value to go in the place is non-negative. */
6163 if (signed_value
>= 0)
6166 /* Encode the offset. */
6167 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
6169 bfd_put_32 (input_bfd
, insn
, hit_data
);
6171 return bfd_reloc_ok
;
6173 case R_ARM_LDC_PC_G0
:
6174 case R_ARM_LDC_PC_G1
:
6175 case R_ARM_LDC_PC_G2
:
6176 case R_ARM_LDC_SB_G0
:
6177 case R_ARM_LDC_SB_G1
:
6178 case R_ARM_LDC_SB_G2
:
6180 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6181 bfd_vma pc
= input_section
->output_section
->vma
6182 + input_section
->output_offset
+ rel
->r_offset
;
6183 bfd_vma sb
= 0; /* See note above. */
6185 bfd_signed_vma signed_value
;
6188 /* Determine which groups of bits to calculate. */
6191 case R_ARM_LDC_PC_G0
:
6192 case R_ARM_LDC_SB_G0
:
6196 case R_ARM_LDC_PC_G1
:
6197 case R_ARM_LDC_SB_G1
:
6201 case R_ARM_LDC_PC_G2
:
6202 case R_ARM_LDC_SB_G2
:
6210 /* If REL, extract the addend from the insn. If RELA, it will
6211 have already been fetched for us. */
6212 if (globals
->use_rel
)
6214 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6215 signed_addend
= negative
* ((insn
& 0xff) << 2);
6218 /* Compute the value (X) to go in the place. */
6219 if (r_type
== R_ARM_LDC_PC_G0
6220 || r_type
== R_ARM_LDC_PC_G1
6221 || r_type
== R_ARM_LDC_PC_G2
)
6223 signed_value
= value
- pc
+ signed_addend
;
6225 /* Section base relative. */
6226 signed_value
= value
- sb
+ signed_addend
;
6228 /* Calculate the value of the relevant G_{n-1} to obtain
6229 the residual at that stage. */
6230 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6232 /* Check for overflow. (The absolute value to go in the place must be
6233 divisible by four and, after having been divided by four, must
6234 fit in eight bits.) */
6235 if ((residual
& 0x3) != 0 || residual
>= 0x400)
6237 (*_bfd_error_handler
)
6238 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6239 input_bfd
, input_section
,
6240 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6241 return bfd_reloc_overflow
;
6244 /* Mask out the value and U bit. */
6247 /* Set the U bit if the value to go in the place is non-negative. */
6248 if (signed_value
>= 0)
6251 /* Encode the offset. */
6252 insn
|= residual
>> 2;
6254 bfd_put_32 (input_bfd
, insn
, hit_data
);
6256 return bfd_reloc_ok
;
6259 return bfd_reloc_notsupported
;
6265 uleb128_size (unsigned int i
)
6277 /* Return TRUE if the attribute has the default value (0/""). */
6279 is_default_attr (aeabi_attribute
*attr
)
6281 if ((attr
->type
& 1) && attr
->i
!= 0)
6283 if ((attr
->type
& 2) && attr
->s
&& *attr
->s
)
6289 /* Return the size of a single attribute. */
6291 eabi_attr_size(int tag
, aeabi_attribute
*attr
)
6295 if (is_default_attr (attr
))
6298 size
= uleb128_size (tag
);
6300 size
+= uleb128_size (attr
->i
);
6302 size
+= strlen ((char *)attr
->s
) + 1;
6306 /* Returns the size of the eabi object attributess section. */
6308 elf32_arm_eabi_attr_size (bfd
*abfd
)
6311 aeabi_attribute
*attr
;
6312 aeabi_attribute_list
*list
;
6315 attr
= elf32_arm_tdata (abfd
)->known_eabi_attributes
;
6316 size
= 16; /* 'A' <size> "aeabi" 0x1 <size>. */
6317 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
6318 size
+= eabi_attr_size (i
, &attr
[i
]);
6320 for (list
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
6323 size
+= eabi_attr_size (list
->tag
, &list
->attr
);
6329 write_uleb128 (bfd_byte
*p
, unsigned int val
)
6344 /* Write attribute ATTR to butter P, and return a pointer to the following
6347 write_eabi_attribute (bfd_byte
*p
, int tag
, aeabi_attribute
*attr
)
6349 /* Suppress default entries. */
6350 if (is_default_attr(attr
))
6353 p
= write_uleb128 (p
, tag
);
6355 p
= write_uleb128 (p
, attr
->i
);
6360 len
= strlen (attr
->s
) + 1;
6361 memcpy (p
, attr
->s
, len
);
6368 /* Write the contents of the eabi attributes section to p. */
6370 elf32_arm_set_eabi_attr_contents (bfd
*abfd
, bfd_byte
*contents
, bfd_vma size
)
6373 aeabi_attribute
*attr
;
6374 aeabi_attribute_list
*list
;
6379 bfd_put_32 (abfd
, size
- 1, p
);
6381 memcpy (p
, "aeabi", 6);
6384 bfd_put_32 (abfd
, size
- 11, p
);
6387 attr
= elf32_arm_tdata (abfd
)->known_eabi_attributes
;
6388 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
6389 p
= write_eabi_attribute (p
, i
, &attr
[i
]);
6391 for (list
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
6394 p
= write_eabi_attribute (p
, list
->tag
, &list
->attr
);
6397 /* Override final_link to handle EABI object attribute sections. */
6400 elf32_arm_bfd_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
6403 struct bfd_link_order
*p
;
6404 asection
*attr_section
= NULL
;
6408 /* elf32_arm_merge_private_bfd_data will already have merged the
6409 object attributes. Remove the input sections from the link, and set
6410 the contents of the output secton. */
6411 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6413 if (strcmp (o
->name
, ".ARM.attributes") == 0)
6415 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
6417 asection
*input_section
;
6419 if (p
->type
!= bfd_indirect_link_order
)
6421 input_section
= p
->u
.indirect
.section
;
6422 /* Hack: reset the SEC_HAS_CONTENTS flag so that
6423 elf_link_input_bfd ignores this section. */
6424 input_section
->flags
&= ~SEC_HAS_CONTENTS
;
6427 size
= elf32_arm_eabi_attr_size (abfd
);
6428 bfd_set_section_size (abfd
, o
, size
);
6430 /* Skip this section later on. */
6431 o
->map_head
.link_order
= NULL
;
6434 /* Invoke the ELF linker to do all the work. */
6435 if (!bfd_elf_final_link (abfd
, info
))
6440 contents
= bfd_malloc(size
);
6441 if (contents
== NULL
)
6443 elf32_arm_set_eabi_attr_contents (abfd
, contents
, size
);
6444 bfd_set_section_contents (abfd
, attr_section
, contents
, 0, size
);
6451 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
6453 arm_add_to_rel (bfd
* abfd
,
6455 reloc_howto_type
* howto
,
6456 bfd_signed_vma increment
)
6458 bfd_signed_vma addend
;
6460 if (howto
->type
== R_ARM_THM_CALL
)
6462 int upper_insn
, lower_insn
;
6465 upper_insn
= bfd_get_16 (abfd
, address
);
6466 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
6467 upper
= upper_insn
& 0x7ff;
6468 lower
= lower_insn
& 0x7ff;
6470 addend
= (upper
<< 12) | (lower
<< 1);
6471 addend
+= increment
;
6474 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
6475 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
6477 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
6478 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
6484 contents
= bfd_get_32 (abfd
, address
);
6486 /* Get the (signed) value from the instruction. */
6487 addend
= contents
& howto
->src_mask
;
6488 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6490 bfd_signed_vma mask
;
6493 mask
&= ~ howto
->src_mask
;
6497 /* Add in the increment, (which is a byte value). */
6498 switch (howto
->type
)
6501 addend
+= increment
;
6508 addend
<<= howto
->size
;
6509 addend
+= increment
;
6511 /* Should we check for overflow here ? */
6513 /* Drop any undesired bits. */
6514 addend
>>= howto
->rightshift
;
6518 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
6520 bfd_put_32 (abfd
, contents
, address
);
6524 #define IS_ARM_TLS_RELOC(R_TYPE) \
6525 ((R_TYPE) == R_ARM_TLS_GD32 \
6526 || (R_TYPE) == R_ARM_TLS_LDO32 \
6527 || (R_TYPE) == R_ARM_TLS_LDM32 \
6528 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
6529 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
6530 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
6531 || (R_TYPE) == R_ARM_TLS_LE32 \
6532 || (R_TYPE) == R_ARM_TLS_IE32)
6534 /* Relocate an ARM ELF section. */
6536 elf32_arm_relocate_section (bfd
* output_bfd
,
6537 struct bfd_link_info
* info
,
6539 asection
* input_section
,
6540 bfd_byte
* contents
,
6541 Elf_Internal_Rela
* relocs
,
6542 Elf_Internal_Sym
* local_syms
,
6543 asection
** local_sections
)
6545 Elf_Internal_Shdr
*symtab_hdr
;
6546 struct elf_link_hash_entry
**sym_hashes
;
6547 Elf_Internal_Rela
*rel
;
6548 Elf_Internal_Rela
*relend
;
6550 struct elf32_arm_link_hash_table
* globals
;
6552 globals
= elf32_arm_hash_table (info
);
6554 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
6555 sym_hashes
= elf_sym_hashes (input_bfd
);
6558 relend
= relocs
+ input_section
->reloc_count
;
6559 for (; rel
< relend
; rel
++)
6562 reloc_howto_type
* howto
;
6563 unsigned long r_symndx
;
6564 Elf_Internal_Sym
* sym
;
6566 struct elf_link_hash_entry
* h
;
6568 bfd_reloc_status_type r
;
6571 bfd_boolean unresolved_reloc
= FALSE
;
6572 char *error_message
= NULL
;
6574 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6575 r_type
= ELF32_R_TYPE (rel
->r_info
);
6576 r_type
= arm_real_reloc_type (globals
, r_type
);
6578 if ( r_type
== R_ARM_GNU_VTENTRY
6579 || r_type
== R_ARM_GNU_VTINHERIT
)
6582 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
6583 howto
= bfd_reloc
.howto
;
6589 if (r_symndx
< symtab_hdr
->sh_info
)
6591 sym
= local_syms
+ r_symndx
;
6592 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
6593 sec
= local_sections
[r_symndx
];
6594 if (globals
->use_rel
)
6596 relocation
= (sec
->output_section
->vma
6597 + sec
->output_offset
6599 if (!info
->relocatable
6600 && (sec
->flags
& SEC_MERGE
)
6601 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
6604 bfd_vma addend
, value
;
6606 if (howto
->rightshift
)
6608 (*_bfd_error_handler
)
6609 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
6610 input_bfd
, input_section
,
6611 (long) rel
->r_offset
, howto
->name
);
6615 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
6617 /* Get the (signed) value from the instruction. */
6618 addend
= value
& howto
->src_mask
;
6619 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6621 bfd_signed_vma mask
;
6624 mask
&= ~ howto
->src_mask
;
6629 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
6631 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
6632 value
= (value
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
6633 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
6637 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6643 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6644 r_symndx
, symtab_hdr
, sym_hashes
,
6646 unresolved_reloc
, warned
);
6651 if (sec
!= NULL
&& elf_discarded_section (sec
))
6653 /* For relocs against symbols from removed linkonce sections,
6654 or sections discarded by a linker script, we just want the
6655 section contents zeroed. Avoid any special processing. */
6656 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
6662 if (info
->relocatable
)
6664 /* This is a relocatable link. We don't have to change
6665 anything, unless the reloc is against a section symbol,
6666 in which case we have to adjust according to where the
6667 section symbol winds up in the output section. */
6668 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
6670 if (globals
->use_rel
)
6671 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
6672 howto
, (bfd_signed_vma
) sec
->output_offset
);
6674 rel
->r_addend
+= sec
->output_offset
;
6680 name
= h
->root
.root
.string
;
6683 name
= (bfd_elf_string_from_elf_section
6684 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
6685 if (name
== NULL
|| *name
== '\0')
6686 name
= bfd_section_name (input_bfd
, sec
);
6690 && r_type
!= R_ARM_NONE
6692 || h
->root
.type
== bfd_link_hash_defined
6693 || h
->root
.type
== bfd_link_hash_defweak
)
6694 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
6696 (*_bfd_error_handler
)
6697 ((sym_type
== STT_TLS
6698 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6699 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6702 (long) rel
->r_offset
,
6707 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
6708 input_section
, contents
, rel
,
6709 relocation
, info
, sec
, name
,
6710 (h
? ELF_ST_TYPE (h
->type
) :
6711 ELF_ST_TYPE (sym
->st_info
)), h
,
6712 &unresolved_reloc
, &error_message
);
6714 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6715 because such sections are not SEC_ALLOC and thus ld.so will
6716 not process them. */
6717 if (unresolved_reloc
6718 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
6721 (*_bfd_error_handler
)
6722 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6725 (long) rel
->r_offset
,
6727 h
->root
.root
.string
);
6731 if (r
!= bfd_reloc_ok
)
6735 case bfd_reloc_overflow
:
6736 /* If the overflowing reloc was to an undefined symbol,
6737 we have already printed one error message and there
6738 is no point complaining again. */
6740 h
->root
.type
!= bfd_link_hash_undefined
)
6741 && (!((*info
->callbacks
->reloc_overflow
)
6742 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
6743 (bfd_vma
) 0, input_bfd
, input_section
,
6748 case bfd_reloc_undefined
:
6749 if (!((*info
->callbacks
->undefined_symbol
)
6750 (info
, name
, input_bfd
, input_section
,
6751 rel
->r_offset
, TRUE
)))
6755 case bfd_reloc_outofrange
:
6756 error_message
= _("out of range");
6759 case bfd_reloc_notsupported
:
6760 error_message
= _("unsupported relocation");
6763 case bfd_reloc_dangerous
:
6764 /* error_message should already be set. */
6768 error_message
= _("unknown error");
6772 BFD_ASSERT (error_message
!= NULL
);
6773 if (!((*info
->callbacks
->reloc_dangerous
)
6774 (info
, error_message
, input_bfd
, input_section
,
6785 /* Allocate/find an object attribute. */
6786 static aeabi_attribute
*
6787 elf32_arm_new_eabi_attr (bfd
*abfd
, int tag
)
6789 aeabi_attribute
*attr
;
6790 aeabi_attribute_list
*list
;
6791 aeabi_attribute_list
*p
;
6792 aeabi_attribute_list
**lastp
;
6795 if (tag
< NUM_KNOWN_ATTRIBUTES
)
6797 /* Knwon tags are preallocated. */
6798 attr
= &elf32_arm_tdata (abfd
)->known_eabi_attributes
[tag
];
6802 /* Create a new tag. */
6803 list
= (aeabi_attribute_list
*)
6804 bfd_alloc (abfd
, sizeof (aeabi_attribute_list
));
6805 memset (list
, 0, sizeof (aeabi_attribute_list
));
6807 /* Keep the tag list in order. */
6808 lastp
= &elf32_arm_tdata (abfd
)->other_eabi_attributes
;
6809 for (p
= *lastp
; p
; p
= p
->next
)
6815 list
->next
= *lastp
;
6824 elf32_arm_get_eabi_attr_int (bfd
*abfd
, int tag
)
6826 aeabi_attribute_list
*p
;
6828 if (tag
< NUM_KNOWN_ATTRIBUTES
)
6830 /* Knwon tags are preallocated. */
6831 return elf32_arm_tdata (abfd
)->known_eabi_attributes
[tag
].i
;
6835 for (p
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
6849 elf32_arm_add_eabi_attr_int (bfd
*abfd
, int tag
, unsigned int i
)
6851 aeabi_attribute
*attr
;
6853 attr
= elf32_arm_new_eabi_attr (abfd
, tag
);
6859 attr_strdup (bfd
*abfd
, const char * s
)
6864 len
= strlen (s
) + 1;
6865 p
= (char *)bfd_alloc(abfd
, len
);
6866 return memcpy (p
, s
, len
);
6870 elf32_arm_add_eabi_attr_string (bfd
*abfd
, int tag
, const char *s
)
6872 aeabi_attribute
*attr
;
6874 attr
= elf32_arm_new_eabi_attr (abfd
, tag
);
6876 attr
->s
= attr_strdup (abfd
, s
);
6880 elf32_arm_add_eabi_attr_compat (bfd
*abfd
, unsigned int i
, const char *s
)
6882 aeabi_attribute_list
*list
;
6883 aeabi_attribute_list
*p
;
6884 aeabi_attribute_list
**lastp
;
6886 list
= (aeabi_attribute_list
*)
6887 bfd_alloc (abfd
, sizeof (aeabi_attribute_list
));
6888 memset (list
, 0, sizeof (aeabi_attribute_list
));
6889 list
->tag
= Tag_compatibility
;
6890 list
->attr
.type
= 3;
6892 list
->attr
.s
= attr_strdup (abfd
, s
);
6894 lastp
= &elf32_arm_tdata (abfd
)->other_eabi_attributes
;
6895 for (p
= *lastp
; p
; p
= p
->next
)
6898 if (p
->tag
!= Tag_compatibility
)
6900 cmp
= strcmp(s
, p
->attr
.s
);
6901 if (cmp
< 0 || (cmp
== 0 && i
< p
->attr
.i
))
6905 list
->next
= *lastp
;
6909 /* Set the right machine number. */
6912 elf32_arm_object_p (bfd
*abfd
)
6916 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
6918 if (mach
!= bfd_mach_arm_unknown
)
6919 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
6921 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
6922 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
6925 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
6930 /* Function to keep ARM specific flags in the ELF header. */
6933 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
6935 if (elf_flags_init (abfd
)
6936 && elf_elfheader (abfd
)->e_flags
!= flags
)
6938 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
6940 if (flags
& EF_ARM_INTERWORK
)
6941 (*_bfd_error_handler
)
6942 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
6946 (_("Warning: Clearing the interworking flag of %B due to outside request"),
6952 elf_elfheader (abfd
)->e_flags
= flags
;
6953 elf_flags_init (abfd
) = TRUE
;
6959 /* Copy the eabi object attribute from IBFD to OBFD. */
6961 copy_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
6963 aeabi_attribute
*in_attr
;
6964 aeabi_attribute
*out_attr
;
6965 aeabi_attribute_list
*list
;
6968 in_attr
= &elf32_arm_tdata (ibfd
)->known_eabi_attributes
[4];
6969 out_attr
= &elf32_arm_tdata (obfd
)->known_eabi_attributes
[4];
6970 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
6972 out_attr
->type
= in_attr
->type
;
6973 out_attr
->i
= in_attr
->i
;
6974 if (in_attr
->s
&& *in_attr
->s
)
6975 out_attr
->s
= attr_strdup (obfd
, in_attr
->s
);
6980 for (list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
6984 in_attr
= &list
->attr
;
6985 switch (in_attr
->type
)
6988 elf32_arm_add_eabi_attr_int (obfd
, list
->tag
, in_attr
->i
);
6991 elf32_arm_add_eabi_attr_string (obfd
, list
->tag
, in_attr
->s
);
6994 elf32_arm_add_eabi_attr_compat (obfd
, in_attr
->i
, in_attr
->s
);
7003 /* Copy backend specific data from one object module to another. */
7006 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
7011 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
7012 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
7015 in_flags
= elf_elfheader (ibfd
)->e_flags
;
7016 out_flags
= elf_elfheader (obfd
)->e_flags
;
7018 if (elf_flags_init (obfd
)
7019 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
7020 && in_flags
!= out_flags
)
7022 /* Cannot mix APCS26 and APCS32 code. */
7023 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
7026 /* Cannot mix float APCS and non-float APCS code. */
7027 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
7030 /* If the src and dest have different interworking flags
7031 then turn off the interworking bit. */
7032 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
7034 if (out_flags
& EF_ARM_INTERWORK
)
7036 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
7039 in_flags
&= ~EF_ARM_INTERWORK
;
7042 /* Likewise for PIC, though don't warn for this case. */
7043 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
7044 in_flags
&= ~EF_ARM_PIC
;
7047 elf_elfheader (obfd
)->e_flags
= in_flags
;
7048 elf_flags_init (obfd
) = TRUE
;
7050 /* Also copy the EI_OSABI field. */
7051 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
7052 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
7054 /* Copy EABI object attributes. */
7055 copy_eabi_attributes (ibfd
, obfd
);
7060 /* Values for Tag_ABI_PCS_R9_use. */
7069 /* Values for Tag_ABI_PCS_RW_data. */
7072 AEABI_PCS_RW_data_absolute
,
7073 AEABI_PCS_RW_data_PCrel
,
7074 AEABI_PCS_RW_data_SBrel
,
7075 AEABI_PCS_RW_data_unused
7078 /* Values for Tag_ABI_enum_size. */
7084 AEABI_enum_forced_wide
7087 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
7088 are conflicting attributes. */
7090 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
7092 aeabi_attribute
*in_attr
;
7093 aeabi_attribute
*out_attr
;
7094 aeabi_attribute_list
*in_list
;
7095 aeabi_attribute_list
*out_list
;
7096 /* Some tags have 0 = don't care, 1 = strong requirement,
7097 2 = weak requirement. */
7098 static const int order_312
[3] = {3, 1, 2};
7101 if (!elf32_arm_tdata (obfd
)->known_eabi_attributes
[0].i
)
7103 /* This is the first object. Copy the attributes. */
7104 copy_eabi_attributes (ibfd
, obfd
);
7106 /* Use the Tag_null value to indicate the attributes have been
7108 elf32_arm_tdata (obfd
)->known_eabi_attributes
[0].i
= 1;
7113 in_attr
= elf32_arm_tdata (ibfd
)->known_eabi_attributes
;
7114 out_attr
= elf32_arm_tdata (obfd
)->known_eabi_attributes
;
7115 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
7116 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
7118 /* Ignore mismatches if teh object doesn't use floating point. */
7119 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
7120 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
7121 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
7124 (_("ERROR: %B uses VFP register arguments, %B does not"),
7130 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
7132 /* Merge this attribute with existing attributes. */
7135 case Tag_CPU_raw_name
:
7137 /* Use whichever has the greatest architecture requirements. We
7138 won't necessarily have both the above tags, so make sure input
7139 name is non-NULL. */
7140 if (in_attr
[Tag_CPU_arch
].i
> out_attr
[Tag_CPU_arch
].i
7142 out_attr
[i
].s
= attr_strdup(obfd
, in_attr
[i
].s
);
7145 case Tag_ABI_optimization_goals
:
7146 case Tag_ABI_FP_optimization_goals
:
7147 /* Use the first value seen. */
7151 case Tag_ARM_ISA_use
:
7152 case Tag_THUMB_ISA_use
:
7156 /* ??? Do NEON and WMMX conflict? */
7157 case Tag_ABI_FP_rounding
:
7158 case Tag_ABI_FP_denormal
:
7159 case Tag_ABI_FP_exceptions
:
7160 case Tag_ABI_FP_user_exceptions
:
7161 case Tag_ABI_FP_number_model
:
7162 case Tag_ABI_align8_preserved
:
7163 case Tag_ABI_HardFP_use
:
7164 /* Use the largest value specified. */
7165 if (in_attr
[i
].i
> out_attr
[i
].i
)
7166 out_attr
[i
].i
= in_attr
[i
].i
;
7169 case Tag_CPU_arch_profile
:
7170 /* Warn if conflicting architecture profiles used. */
7171 if (out_attr
[i
].i
&& in_attr
[i
].i
&& in_attr
[i
].i
!= out_attr
[i
].i
)
7174 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
7175 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
7179 out_attr
[i
].i
= in_attr
[i
].i
;
7181 case Tag_PCS_config
:
7182 if (out_attr
[i
].i
== 0)
7183 out_attr
[i
].i
= in_attr
[i
].i
;
7184 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
7186 /* It's sometimes ok to mix different configs, so this is only
7189 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
7192 case Tag_ABI_PCS_R9_use
:
7193 if (in_attr
[i
].i
!= out_attr
[i
].i
7194 && out_attr
[i
].i
!= AEABI_R9_unused
7195 && in_attr
[i
].i
!= AEABI_R9_unused
)
7198 (_("ERROR: %B: Conflicting use of R9"), ibfd
);
7201 if (out_attr
[i
].i
== AEABI_R9_unused
)
7202 out_attr
[i
].i
= in_attr
[i
].i
;
7204 case Tag_ABI_PCS_RW_data
:
7205 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
7206 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
7207 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
7210 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
7214 /* Use the smallest value specified. */
7215 if (in_attr
[i
].i
< out_attr
[i
].i
)
7216 out_attr
[i
].i
= in_attr
[i
].i
;
7218 case Tag_ABI_PCS_RO_data
:
7219 /* Use the smallest value specified. */
7220 if (in_attr
[i
].i
< out_attr
[i
].i
)
7221 out_attr
[i
].i
= in_attr
[i
].i
;
7223 case Tag_ABI_PCS_GOT_use
:
7224 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
7225 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
7226 out_attr
[i
].i
= in_attr
[i
].i
;
7228 case Tag_ABI_PCS_wchar_t
:
7229 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
)
7232 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd
);
7236 out_attr
[i
].i
= in_attr
[i
].i
;
7238 case Tag_ABI_align8_needed
:
7239 /* ??? Check against Tag_ABI_align8_preserved. */
7240 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
7241 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
7242 out_attr
[i
].i
= in_attr
[i
].i
;
7244 case Tag_ABI_enum_size
:
7245 if (in_attr
[i
].i
!= AEABI_enum_unused
)
7247 if (out_attr
[i
].i
== AEABI_enum_unused
7248 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
7250 /* The existing object is compatible with anything.
7251 Use whatever requirements the new object has. */
7252 out_attr
[i
].i
= in_attr
[i
].i
;
7254 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
7255 && out_attr
[i
].i
!= in_attr
[i
].i
7256 && !elf32_arm_tdata (obfd
)->no_enum_size_warning
)
7258 const char *aeabi_enum_names
[] =
7259 { "", "variable-size", "32-bit", "" };
7261 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
7262 ibfd
, aeabi_enum_names
[in_attr
[i
].i
],
7263 aeabi_enum_names
[out_attr
[i
].i
]);
7267 case Tag_ABI_VFP_args
:
7270 case Tag_ABI_WMMX_args
:
7271 if (in_attr
[i
].i
!= out_attr
[i
].i
)
7274 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
7279 default: /* All known attributes should be explicitly covered. */
7284 in_list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
7285 out_list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
7286 while (in_list
&& in_list
->tag
== Tag_compatibility
)
7288 in_attr
= &in_list
->attr
;
7289 if (in_attr
->i
== 0)
7291 if (in_attr
->i
== 1)
7294 (_("ERROR: %B: Must be processed by '%s' toolchain"),
7298 if (!out_list
|| out_list
->tag
!= Tag_compatibility
7299 || strcmp (in_attr
->s
, out_list
->attr
.s
) != 0)
7301 /* Add this compatibility tag to the output. */
7302 elf32_arm_add_eabi_attr_compat (obfd
, in_attr
->i
, in_attr
->s
);
7305 out_attr
= &out_list
->attr
;
7306 /* Check all the input tags with the same identifier. */
7309 if (out_list
->tag
!= Tag_compatibility
7310 || in_attr
->i
!= out_attr
->i
7311 || strcmp (in_attr
->s
, out_attr
->s
) != 0)
7314 (_("ERROR: %B: Incompatible object tag '%s':%d"),
7315 ibfd
, in_attr
->s
, in_attr
->i
);
7318 in_list
= in_list
->next
;
7319 if (in_list
->tag
!= Tag_compatibility
7320 || strcmp (in_attr
->s
, in_list
->attr
.s
) != 0)
7322 in_attr
= &in_list
->attr
;
7323 out_list
= out_list
->next
;
7325 out_attr
= &out_list
->attr
;
7328 /* Check the output doesn't have extra tags with this identifier. */
7329 if (out_list
&& out_list
->tag
== Tag_compatibility
7330 && strcmp (in_attr
->s
, out_list
->attr
.s
) == 0)
7333 (_("ERROR: %B: Incompatible object tag '%s':%d"),
7334 ibfd
, in_attr
->s
, out_list
->attr
.i
);
7339 for (; in_list
; in_list
= in_list
->next
)
7341 if ((in_list
->tag
& 128) < 64)
7344 (_("Warning: %B: Unknown EABI object attribute %d"),
7345 ibfd
, in_list
->tag
);
7353 /* Return TRUE if the two EABI versions are incompatible. */
7356 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
7358 /* v4 and v5 are the same spec before and after it was released,
7359 so allow mixing them. */
7360 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
7361 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
7364 return (iver
== over
);
7367 /* Merge backend specific data from an object file to the output
7368 object file when linking. */
7371 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
7375 bfd_boolean flags_compatible
= TRUE
;
7378 /* Check if we have the same endianess. */
7379 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
7382 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
7383 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
7386 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
7389 /* The input BFD must have had its flags initialised. */
7390 /* The following seems bogus to me -- The flags are initialized in
7391 the assembler but I don't think an elf_flags_init field is
7392 written into the object. */
7393 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7395 in_flags
= elf_elfheader (ibfd
)->e_flags
;
7396 out_flags
= elf_elfheader (obfd
)->e_flags
;
7398 if (!elf_flags_init (obfd
))
7400 /* If the input is the default architecture and had the default
7401 flags then do not bother setting the flags for the output
7402 architecture, instead allow future merges to do this. If no
7403 future merges ever set these flags then they will retain their
7404 uninitialised values, which surprise surprise, correspond
7405 to the default values. */
7406 if (bfd_get_arch_info (ibfd
)->the_default
7407 && elf_elfheader (ibfd
)->e_flags
== 0)
7410 elf_flags_init (obfd
) = TRUE
;
7411 elf_elfheader (obfd
)->e_flags
= in_flags
;
7413 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
7414 && bfd_get_arch_info (obfd
)->the_default
)
7415 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
7420 /* Determine what should happen if the input ARM architecture
7421 does not match the output ARM architecture. */
7422 if (! bfd_arm_merge_machines (ibfd
, obfd
))
7425 /* Identical flags must be compatible. */
7426 if (in_flags
== out_flags
)
7429 /* Check to see if the input BFD actually contains any sections. If
7430 not, its flags may not have been initialised either, but it
7431 cannot actually cause any incompatiblity. Do not short-circuit
7432 dynamic objects; their section list may be emptied by
7433 elf_link_add_object_symbols.
7435 Also check to see if there are no code sections in the input.
7436 In this case there is no need to check for code specific flags.
7437 XXX - do we need to worry about floating-point format compatability
7438 in data sections ? */
7439 if (!(ibfd
->flags
& DYNAMIC
))
7441 bfd_boolean null_input_bfd
= TRUE
;
7442 bfd_boolean only_data_sections
= TRUE
;
7444 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7446 /* Ignore synthetic glue sections. */
7447 if (strcmp (sec
->name
, ".glue_7")
7448 && strcmp (sec
->name
, ".glue_7t"))
7450 if ((bfd_get_section_flags (ibfd
, sec
)
7451 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7452 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7453 only_data_sections
= FALSE
;
7455 null_input_bfd
= FALSE
;
7460 if (null_input_bfd
|| only_data_sections
)
7464 /* Complain about various flag mismatches. */
7465 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
7466 EF_ARM_EABI_VERSION (out_flags
)))
7469 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
7471 (in_flags
& EF_ARM_EABIMASK
) >> 24,
7472 (out_flags
& EF_ARM_EABIMASK
) >> 24);
7476 /* Not sure what needs to be checked for EABI versions >= 1. */
7477 /* VxWorks libraries do not use these flags. */
7478 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
7479 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
7480 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
7482 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
7485 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
7487 in_flags
& EF_ARM_APCS_26
? 26 : 32,
7488 out_flags
& EF_ARM_APCS_26
? 26 : 32);
7489 flags_compatible
= FALSE
;
7492 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
7494 if (in_flags
& EF_ARM_APCS_FLOAT
)
7496 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
7500 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
7503 flags_compatible
= FALSE
;
7506 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
7508 if (in_flags
& EF_ARM_VFP_FLOAT
)
7510 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
7514 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
7517 flags_compatible
= FALSE
;
7520 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
7522 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
7524 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
7528 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
7531 flags_compatible
= FALSE
;
7534 #ifdef EF_ARM_SOFT_FLOAT
7535 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
7537 /* We can allow interworking between code that is VFP format
7538 layout, and uses either soft float or integer regs for
7539 passing floating point arguments and results. We already
7540 know that the APCS_FLOAT flags match; similarly for VFP
7542 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
7543 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
7545 if (in_flags
& EF_ARM_SOFT_FLOAT
)
7547 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
7551 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
7554 flags_compatible
= FALSE
;
7559 /* Interworking mismatch is only a warning. */
7560 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
7562 if (in_flags
& EF_ARM_INTERWORK
)
7565 (_("Warning: %B supports interworking, whereas %B does not"),
7571 (_("Warning: %B does not support interworking, whereas %B does"),
7577 return flags_compatible
;
7580 /* Display the flags field. */
7583 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
7585 FILE * file
= (FILE *) ptr
;
7586 unsigned long flags
;
7588 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
7590 /* Print normal ELF private data. */
7591 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
7593 flags
= elf_elfheader (abfd
)->e_flags
;
7594 /* Ignore init flag - it may not be set, despite the flags field
7595 containing valid data. */
7597 /* xgettext:c-format */
7598 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
7600 switch (EF_ARM_EABI_VERSION (flags
))
7602 case EF_ARM_EABI_UNKNOWN
:
7603 /* The following flag bits are GNU extensions and not part of the
7604 official ARM ELF extended ABI. Hence they are only decoded if
7605 the EABI version is not set. */
7606 if (flags
& EF_ARM_INTERWORK
)
7607 fprintf (file
, _(" [interworking enabled]"));
7609 if (flags
& EF_ARM_APCS_26
)
7610 fprintf (file
, " [APCS-26]");
7612 fprintf (file
, " [APCS-32]");
7614 if (flags
& EF_ARM_VFP_FLOAT
)
7615 fprintf (file
, _(" [VFP float format]"));
7616 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
7617 fprintf (file
, _(" [Maverick float format]"));
7619 fprintf (file
, _(" [FPA float format]"));
7621 if (flags
& EF_ARM_APCS_FLOAT
)
7622 fprintf (file
, _(" [floats passed in float registers]"));
7624 if (flags
& EF_ARM_PIC
)
7625 fprintf (file
, _(" [position independent]"));
7627 if (flags
& EF_ARM_NEW_ABI
)
7628 fprintf (file
, _(" [new ABI]"));
7630 if (flags
& EF_ARM_OLD_ABI
)
7631 fprintf (file
, _(" [old ABI]"));
7633 if (flags
& EF_ARM_SOFT_FLOAT
)
7634 fprintf (file
, _(" [software FP]"));
7636 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
7637 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
7638 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
7639 | EF_ARM_MAVERICK_FLOAT
);
7642 case EF_ARM_EABI_VER1
:
7643 fprintf (file
, _(" [Version1 EABI]"));
7645 if (flags
& EF_ARM_SYMSARESORTED
)
7646 fprintf (file
, _(" [sorted symbol table]"));
7648 fprintf (file
, _(" [unsorted symbol table]"));
7650 flags
&= ~ EF_ARM_SYMSARESORTED
;
7653 case EF_ARM_EABI_VER2
:
7654 fprintf (file
, _(" [Version2 EABI]"));
7656 if (flags
& EF_ARM_SYMSARESORTED
)
7657 fprintf (file
, _(" [sorted symbol table]"));
7659 fprintf (file
, _(" [unsorted symbol table]"));
7661 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
7662 fprintf (file
, _(" [dynamic symbols use segment index]"));
7664 if (flags
& EF_ARM_MAPSYMSFIRST
)
7665 fprintf (file
, _(" [mapping symbols precede others]"));
7667 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
7668 | EF_ARM_MAPSYMSFIRST
);
7671 case EF_ARM_EABI_VER3
:
7672 fprintf (file
, _(" [Version3 EABI]"));
7675 case EF_ARM_EABI_VER4
:
7676 fprintf (file
, _(" [Version4 EABI]"));
7679 case EF_ARM_EABI_VER5
:
7680 fprintf (file
, _(" [Version5 EABI]"));
7682 if (flags
& EF_ARM_BE8
)
7683 fprintf (file
, _(" [BE8]"));
7685 if (flags
& EF_ARM_LE8
)
7686 fprintf (file
, _(" [LE8]"));
7688 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
7692 fprintf (file
, _(" <EABI version unrecognised>"));
7696 flags
&= ~ EF_ARM_EABIMASK
;
7698 if (flags
& EF_ARM_RELEXEC
)
7699 fprintf (file
, _(" [relocatable executable]"));
7701 if (flags
& EF_ARM_HASENTRY
)
7702 fprintf (file
, _(" [has entry point]"));
7704 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
7707 fprintf (file
, _("<Unrecognised flag bits set>"));
7715 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
7717 switch (ELF_ST_TYPE (elf_sym
->st_info
))
7720 return ELF_ST_TYPE (elf_sym
->st_info
);
7723 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
7724 This allows us to distinguish between data used by Thumb instructions
7725 and non-data (which is probably code) inside Thumb regions of an
7727 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
7728 return ELF_ST_TYPE (elf_sym
->st_info
);
7739 elf32_arm_gc_mark_hook (asection
*sec
,
7740 struct bfd_link_info
*info
,
7741 Elf_Internal_Rela
*rel
,
7742 struct elf_link_hash_entry
*h
,
7743 Elf_Internal_Sym
*sym
)
7746 switch (ELF32_R_TYPE (rel
->r_info
))
7748 case R_ARM_GNU_VTINHERIT
:
7749 case R_ARM_GNU_VTENTRY
:
7753 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
7756 /* Update the got entry reference counts for the section being removed. */
7759 elf32_arm_gc_sweep_hook (bfd
* abfd
,
7760 struct bfd_link_info
* info
,
7762 const Elf_Internal_Rela
* relocs
)
7764 Elf_Internal_Shdr
*symtab_hdr
;
7765 struct elf_link_hash_entry
**sym_hashes
;
7766 bfd_signed_vma
*local_got_refcounts
;
7767 const Elf_Internal_Rela
*rel
, *relend
;
7768 struct elf32_arm_link_hash_table
* globals
;
7770 globals
= elf32_arm_hash_table (info
);
7772 elf_section_data (sec
)->local_dynrel
= NULL
;
7774 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
7775 sym_hashes
= elf_sym_hashes (abfd
);
7776 local_got_refcounts
= elf_local_got_refcounts (abfd
);
7778 relend
= relocs
+ sec
->reloc_count
;
7779 for (rel
= relocs
; rel
< relend
; rel
++)
7781 unsigned long r_symndx
;
7782 struct elf_link_hash_entry
*h
= NULL
;
7785 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7786 if (r_symndx
>= symtab_hdr
->sh_info
)
7788 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7789 while (h
->root
.type
== bfd_link_hash_indirect
7790 || h
->root
.type
== bfd_link_hash_warning
)
7791 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7794 r_type
= ELF32_R_TYPE (rel
->r_info
);
7795 r_type
= arm_real_reloc_type (globals
, r_type
);
7799 case R_ARM_GOT_PREL
:
7800 case R_ARM_TLS_GD32
:
7801 case R_ARM_TLS_IE32
:
7804 if (h
->got
.refcount
> 0)
7805 h
->got
.refcount
-= 1;
7807 else if (local_got_refcounts
!= NULL
)
7809 if (local_got_refcounts
[r_symndx
] > 0)
7810 local_got_refcounts
[r_symndx
] -= 1;
7814 case R_ARM_TLS_LDM32
:
7815 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
7819 case R_ARM_ABS32_NOI
:
7821 case R_ARM_REL32_NOI
:
7827 case R_ARM_THM_CALL
:
7828 case R_ARM_MOVW_ABS_NC
:
7829 case R_ARM_MOVT_ABS
:
7830 case R_ARM_MOVW_PREL_NC
:
7831 case R_ARM_MOVT_PREL
:
7832 case R_ARM_THM_MOVW_ABS_NC
:
7833 case R_ARM_THM_MOVT_ABS
:
7834 case R_ARM_THM_MOVW_PREL_NC
:
7835 case R_ARM_THM_MOVT_PREL
:
7836 /* Should the interworking branches be here also? */
7840 struct elf32_arm_link_hash_entry
*eh
;
7841 struct elf32_arm_relocs_copied
**pp
;
7842 struct elf32_arm_relocs_copied
*p
;
7844 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7846 if (h
->plt
.refcount
> 0)
7848 h
->plt
.refcount
-= 1;
7849 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_THM_CALL
)
7850 eh
->plt_thumb_refcount
--;
7853 if (r_type
== R_ARM_ABS32
7854 || r_type
== R_ARM_REL32
7855 || r_type
== R_ARM_ABS32_NOI
7856 || r_type
== R_ARM_REL32_NOI
)
7858 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
7860 if (p
->section
== sec
)
7863 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
7864 || ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32_NOI
)
7882 /* Look through the relocs for a section during the first phase. */
7885 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
7886 asection
*sec
, const Elf_Internal_Rela
*relocs
)
7888 Elf_Internal_Shdr
*symtab_hdr
;
7889 struct elf_link_hash_entry
**sym_hashes
;
7890 struct elf_link_hash_entry
**sym_hashes_end
;
7891 const Elf_Internal_Rela
*rel
;
7892 const Elf_Internal_Rela
*rel_end
;
7895 bfd_vma
*local_got_offsets
;
7896 struct elf32_arm_link_hash_table
*htab
;
7898 if (info
->relocatable
)
7901 htab
= elf32_arm_hash_table (info
);
7904 /* Create dynamic sections for relocatable executables so that we can
7905 copy relocations. */
7906 if (htab
->root
.is_relocatable_executable
7907 && ! htab
->root
.dynamic_sections_created
)
7909 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
7913 dynobj
= elf_hash_table (info
)->dynobj
;
7914 local_got_offsets
= elf_local_got_offsets (abfd
);
7916 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
7917 sym_hashes
= elf_sym_hashes (abfd
);
7918 sym_hashes_end
= sym_hashes
7919 + symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
);
7921 if (!elf_bad_symtab (abfd
))
7922 sym_hashes_end
-= symtab_hdr
->sh_info
;
7924 rel_end
= relocs
+ sec
->reloc_count
;
7925 for (rel
= relocs
; rel
< rel_end
; rel
++)
7927 struct elf_link_hash_entry
*h
;
7928 struct elf32_arm_link_hash_entry
*eh
;
7929 unsigned long r_symndx
;
7932 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7933 r_type
= ELF32_R_TYPE (rel
->r_info
);
7934 r_type
= arm_real_reloc_type (htab
, r_type
);
7936 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7938 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
7943 if (r_symndx
< symtab_hdr
->sh_info
)
7947 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7948 while (h
->root
.type
== bfd_link_hash_indirect
7949 || h
->root
.type
== bfd_link_hash_warning
)
7950 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7953 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7958 case R_ARM_GOT_PREL
:
7959 case R_ARM_TLS_GD32
:
7960 case R_ARM_TLS_IE32
:
7961 /* This symbol requires a global offset table entry. */
7963 int tls_type
, old_tls_type
;
7967 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
7968 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
7969 default: tls_type
= GOT_NORMAL
; break;
7975 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
7979 bfd_signed_vma
*local_got_refcounts
;
7981 /* This is a global offset table entry for a local symbol. */
7982 local_got_refcounts
= elf_local_got_refcounts (abfd
);
7983 if (local_got_refcounts
== NULL
)
7987 size
= symtab_hdr
->sh_info
;
7988 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
7989 local_got_refcounts
= bfd_zalloc (abfd
, size
);
7990 if (local_got_refcounts
== NULL
)
7992 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
7993 elf32_arm_local_got_tls_type (abfd
)
7994 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
7996 local_got_refcounts
[r_symndx
] += 1;
7997 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
8000 /* We will already have issued an error message if there is a
8001 TLS / non-TLS mismatch, based on the symbol type. We don't
8002 support any linker relaxations. So just combine any TLS
8004 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
8005 && tls_type
!= GOT_NORMAL
)
8006 tls_type
|= old_tls_type
;
8008 if (old_tls_type
!= tls_type
)
8011 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
8013 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
8018 case R_ARM_TLS_LDM32
:
8019 if (r_type
== R_ARM_TLS_LDM32
)
8020 htab
->tls_ldm_got
.refcount
++;
8023 case R_ARM_GOTOFF32
:
8025 if (htab
->sgot
== NULL
)
8027 if (htab
->root
.dynobj
== NULL
)
8028 htab
->root
.dynobj
= abfd
;
8029 if (!create_got_section (htab
->root
.dynobj
, info
))
8035 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
8036 ldr __GOTT_INDEX__ offsets. */
8037 if (!htab
->vxworks_p
)
8042 case R_ARM_ABS32_NOI
:
8044 case R_ARM_REL32_NOI
:
8050 case R_ARM_THM_CALL
:
8051 case R_ARM_MOVW_ABS_NC
:
8052 case R_ARM_MOVT_ABS
:
8053 case R_ARM_MOVW_PREL_NC
:
8054 case R_ARM_MOVT_PREL
:
8055 case R_ARM_THM_MOVW_ABS_NC
:
8056 case R_ARM_THM_MOVT_ABS
:
8057 case R_ARM_THM_MOVW_PREL_NC
:
8058 case R_ARM_THM_MOVT_PREL
:
8059 /* Should the interworking branches be listed here? */
8062 /* If this reloc is in a read-only section, we might
8063 need a copy reloc. We can't check reliably at this
8064 stage whether the section is read-only, as input
8065 sections have not yet been mapped to output sections.
8066 Tentatively set the flag for now, and correct in
8067 adjust_dynamic_symbol. */
8071 /* We may need a .plt entry if the function this reloc
8072 refers to is in a different object. We can't tell for
8073 sure yet, because something later might force the
8075 if (r_type
!= R_ARM_ABS32
8076 && r_type
!= R_ARM_REL32
8077 && r_type
!= R_ARM_ABS32_NOI
8078 && r_type
!= R_ARM_REL32_NOI
8079 && r_type
!= R_ARM_ABS12
)
8082 /* If we create a PLT entry, this relocation will reference
8083 it, even if it's an ABS32 relocation. */
8084 h
->plt
.refcount
+= 1;
8086 if (r_type
== R_ARM_THM_CALL
)
8087 eh
->plt_thumb_refcount
+= 1;
8090 /* If we are creating a shared library or relocatable executable,
8091 and this is a reloc against a global symbol, or a non PC
8092 relative reloc against a local symbol, then we need to copy
8093 the reloc into the shared library. However, if we are linking
8094 with -Bsymbolic, we do not need to copy a reloc against a
8095 global symbol which is defined in an object we are
8096 including in the link (i.e., DEF_REGULAR is set). At
8097 this point we have not seen all the input files, so it is
8098 possible that DEF_REGULAR is not set now but will be set
8099 later (it is never cleared). We account for that
8100 possibility below by storing information in the
8101 relocs_copied field of the hash table entry. */
8102 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
8103 && (sec
->flags
& SEC_ALLOC
) != 0
8104 && ((r_type
== R_ARM_ABS32
|| r_type
== R_ARM_ABS32_NOI
)
8105 || (h
!= NULL
&& ! h
->needs_plt
8106 && (! info
->symbolic
|| ! h
->def_regular
))))
8108 struct elf32_arm_relocs_copied
*p
, **head
;
8110 /* When creating a shared object, we must copy these
8111 reloc types into the output file. We create a reloc
8112 section in dynobj and make room for this reloc. */
8117 name
= (bfd_elf_string_from_elf_section
8119 elf_elfheader (abfd
)->e_shstrndx
,
8120 elf_section_data (sec
)->rel_hdr
.sh_name
));
8124 BFD_ASSERT (reloc_section_p (htab
, name
, sec
));
8126 sreloc
= bfd_get_section_by_name (dynobj
, name
);
8131 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
8132 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
8133 if ((sec
->flags
& SEC_ALLOC
) != 0
8134 /* BPABI objects never have dynamic
8135 relocations mapped. */
8136 && !htab
->symbian_p
)
8137 flags
|= SEC_ALLOC
| SEC_LOAD
;
8138 sreloc
= bfd_make_section_with_flags (dynobj
,
8142 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
8146 elf_section_data (sec
)->sreloc
= sreloc
;
8149 /* If this is a global symbol, we count the number of
8150 relocations we need for this symbol. */
8153 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
8157 /* Track dynamic relocs needed for local syms too.
8158 We really need local syms available to do this
8164 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
8169 vpp
= &elf_section_data (s
)->local_dynrel
;
8170 head
= (struct elf32_arm_relocs_copied
**) vpp
;
8174 if (p
== NULL
|| p
->section
!= sec
)
8176 bfd_size_type amt
= sizeof *p
;
8178 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
8188 if (r_type
== R_ARM_REL32
|| r_type
== R_ARM_REL32_NOI
)
8194 /* This relocation describes the C++ object vtable hierarchy.
8195 Reconstruct it for later use during GC. */
8196 case R_ARM_GNU_VTINHERIT
:
8197 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
8201 /* This relocation describes which C++ vtable entries are actually
8202 used. Record for later use during GC. */
8203 case R_ARM_GNU_VTENTRY
:
8204 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
8213 /* Unwinding tables are not referenced directly. This pass marks them as
8214 required if the corresponding code section is marked. */
8217 elf32_arm_gc_mark_extra_sections(struct bfd_link_info
*info
,
8218 elf_gc_mark_hook_fn gc_mark_hook
)
8221 Elf_Internal_Shdr
**elf_shdrp
;
8224 /* Marking EH data may cause additional code sections to be marked,
8225 requiring multiple passes. */
8230 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
8234 if (bfd_get_flavour (sub
) != bfd_target_elf_flavour
)
8237 elf_shdrp
= elf_elfsections (sub
);
8238 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
8240 Elf_Internal_Shdr
*hdr
;
8241 hdr
= &elf_section_data (o
)->this_hdr
;
8242 if (hdr
->sh_type
== SHT_ARM_EXIDX
&& hdr
->sh_link
8244 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
8247 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
8257 /* Treat mapping symbols as special target symbols. */
8260 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
8262 return bfd_is_arm_special_symbol_name (sym
->name
,
8263 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
8266 /* This is a copy of elf_find_function() from elf.c except that
8267 ARM mapping symbols are ignored when looking for function names
8268 and STT_ARM_TFUNC is considered to a function type. */
8271 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
8275 const char ** filename_ptr
,
8276 const char ** functionname_ptr
)
8278 const char * filename
= NULL
;
8279 asymbol
* func
= NULL
;
8280 bfd_vma low_func
= 0;
8283 for (p
= symbols
; *p
!= NULL
; p
++)
8287 q
= (elf_symbol_type
*) *p
;
8289 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
8294 filename
= bfd_asymbol_name (&q
->symbol
);
8299 /* Skip mapping symbols. */
8300 if ((q
->symbol
.flags
& BSF_LOCAL
)
8301 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
8302 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
8305 if (bfd_get_section (&q
->symbol
) == section
8306 && q
->symbol
.value
>= low_func
8307 && q
->symbol
.value
<= offset
)
8309 func
= (asymbol
*) q
;
8310 low_func
= q
->symbol
.value
;
8320 *filename_ptr
= filename
;
8321 if (functionname_ptr
)
8322 *functionname_ptr
= bfd_asymbol_name (func
);
8328 /* Find the nearest line to a particular section and offset, for error
8329 reporting. This code is a duplicate of the code in elf.c, except
8330 that it uses arm_elf_find_function. */
8333 elf32_arm_find_nearest_line (bfd
* abfd
,
8337 const char ** filename_ptr
,
8338 const char ** functionname_ptr
,
8339 unsigned int * line_ptr
)
8341 bfd_boolean found
= FALSE
;
8343 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
8345 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
8346 filename_ptr
, functionname_ptr
,
8348 & elf_tdata (abfd
)->dwarf2_find_line_info
))
8350 if (!*functionname_ptr
)
8351 arm_elf_find_function (abfd
, section
, symbols
, offset
,
8352 *filename_ptr
? NULL
: filename_ptr
,
8358 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
8359 & found
, filename_ptr
,
8360 functionname_ptr
, line_ptr
,
8361 & elf_tdata (abfd
)->line_info
))
8364 if (found
&& (*functionname_ptr
|| *line_ptr
))
8367 if (symbols
== NULL
)
8370 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
8371 filename_ptr
, functionname_ptr
))
8379 elf32_arm_find_inliner_info (bfd
* abfd
,
8380 const char ** filename_ptr
,
8381 const char ** functionname_ptr
,
8382 unsigned int * line_ptr
)
8385 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
8386 functionname_ptr
, line_ptr
,
8387 & elf_tdata (abfd
)->dwarf2_find_line_info
);
8391 /* Adjust a symbol defined by a dynamic object and referenced by a
8392 regular object. The current definition is in some section of the
8393 dynamic object, but we're not including those sections. We have to
8394 change the definition to something the rest of the link can
8398 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
8399 struct elf_link_hash_entry
* h
)
8403 struct elf32_arm_link_hash_entry
* eh
;
8404 struct elf32_arm_link_hash_table
*globals
;
8406 globals
= elf32_arm_hash_table (info
);
8407 dynobj
= elf_hash_table (info
)->dynobj
;
8409 /* Make sure we know what is going on here. */
8410 BFD_ASSERT (dynobj
!= NULL
8412 || h
->u
.weakdef
!= NULL
8415 && !h
->def_regular
)));
8417 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8419 /* If this is a function, put it in the procedure linkage table. We
8420 will fill in the contents of the procedure linkage table later,
8421 when we know the address of the .got section. */
8422 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
8425 if (h
->plt
.refcount
<= 0
8426 || SYMBOL_CALLS_LOCAL (info
, h
)
8427 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
8428 && h
->root
.type
== bfd_link_hash_undefweak
))
8430 /* This case can occur if we saw a PLT32 reloc in an input
8431 file, but the symbol was never referred to by a dynamic
8432 object, or if all references were garbage collected. In
8433 such a case, we don't actually need to build a procedure
8434 linkage table, and we can just do a PC24 reloc instead. */
8435 h
->plt
.offset
= (bfd_vma
) -1;
8436 eh
->plt_thumb_refcount
= 0;
8444 /* It's possible that we incorrectly decided a .plt reloc was
8445 needed for an R_ARM_PC24 or similar reloc to a non-function sym
8446 in check_relocs. We can't decide accurately between function
8447 and non-function syms in check-relocs; Objects loaded later in
8448 the link may change h->type. So fix it now. */
8449 h
->plt
.offset
= (bfd_vma
) -1;
8450 eh
->plt_thumb_refcount
= 0;
8453 /* If this is a weak symbol, and there is a real definition, the
8454 processor independent code will have arranged for us to see the
8455 real definition first, and we can just use the same value. */
8456 if (h
->u
.weakdef
!= NULL
)
8458 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
8459 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
8460 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
8461 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
8465 /* If there are no non-GOT references, we do not need a copy
8467 if (!h
->non_got_ref
)
8470 /* This is a reference to a symbol defined by a dynamic object which
8471 is not a function. */
8473 /* If we are creating a shared library, we must presume that the
8474 only references to the symbol are via the global offset table.
8475 For such cases we need not do anything here; the relocations will
8476 be handled correctly by relocate_section. Relocatable executables
8477 can reference data in shared objects directly, so we don't need to
8478 do anything here. */
8479 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
8484 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
8485 h
->root
.root
.string
);
8489 /* We must allocate the symbol in our .dynbss section, which will
8490 become part of the .bss section of the executable. There will be
8491 an entry for this symbol in the .dynsym section. The dynamic
8492 object will contain position independent code, so all references
8493 from the dynamic object to this symbol will go through the global
8494 offset table. The dynamic linker will use the .dynsym entry to
8495 determine the address it must put in the global offset table, so
8496 both the dynamic object and the regular object will refer to the
8497 same memory location for the variable. */
8498 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
8499 BFD_ASSERT (s
!= NULL
);
8501 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
8502 copy the initial value out of the dynamic object and into the
8503 runtime process image. We need to remember the offset into the
8504 .rel(a).bss section we are going to use. */
8505 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
8509 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
8510 BFD_ASSERT (srel
!= NULL
);
8511 srel
->size
+= RELOC_SIZE (globals
);
8515 return _bfd_elf_adjust_dynamic_copy (h
, s
);
8518 /* Allocate space in .plt, .got and associated reloc sections for
8522 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
8524 struct bfd_link_info
*info
;
8525 struct elf32_arm_link_hash_table
*htab
;
8526 struct elf32_arm_link_hash_entry
*eh
;
8527 struct elf32_arm_relocs_copied
*p
;
8529 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8531 if (h
->root
.type
== bfd_link_hash_indirect
)
8534 if (h
->root
.type
== bfd_link_hash_warning
)
8535 /* When warning symbols are created, they **replace** the "real"
8536 entry in the hash table, thus we never get to see the real
8537 symbol in a hash traversal. So look at it now. */
8538 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8540 info
= (struct bfd_link_info
*) inf
;
8541 htab
= elf32_arm_hash_table (info
);
8543 if (htab
->root
.dynamic_sections_created
8544 && h
->plt
.refcount
> 0)
8546 /* Make sure this symbol is output as a dynamic symbol.
8547 Undefined weak syms won't yet be marked as dynamic. */
8548 if (h
->dynindx
== -1
8549 && !h
->forced_local
)
8551 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8556 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
8558 asection
*s
= htab
->splt
;
8560 /* If this is the first .plt entry, make room for the special
8563 s
->size
+= htab
->plt_header_size
;
8565 h
->plt
.offset
= s
->size
;
8567 /* If we will insert a Thumb trampoline before this PLT, leave room
8569 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
8571 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
8572 s
->size
+= PLT_THUMB_STUB_SIZE
;
8575 /* If this symbol is not defined in a regular file, and we are
8576 not generating a shared library, then set the symbol to this
8577 location in the .plt. This is required to make function
8578 pointers compare as equal between the normal executable and
8579 the shared library. */
8583 h
->root
.u
.def
.section
= s
;
8584 h
->root
.u
.def
.value
= h
->plt
.offset
;
8586 /* Make sure the function is not marked as Thumb, in case
8587 it is the target of an ABS32 relocation, which will
8588 point to the PLT entry. */
8589 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
8590 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
8593 /* Make room for this entry. */
8594 s
->size
+= htab
->plt_entry_size
;
8596 if (!htab
->symbian_p
)
8598 /* We also need to make an entry in the .got.plt section, which
8599 will be placed in the .got section by the linker script. */
8600 eh
->plt_got_offset
= htab
->sgotplt
->size
;
8601 htab
->sgotplt
->size
+= 4;
8604 /* We also need to make an entry in the .rel(a).plt section. */
8605 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
8607 /* VxWorks executables have a second set of relocations for
8608 each PLT entry. They go in a separate relocation section,
8609 which is processed by the kernel loader. */
8610 if (htab
->vxworks_p
&& !info
->shared
)
8612 /* There is a relocation for the initial PLT entry:
8613 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
8614 if (h
->plt
.offset
== htab
->plt_header_size
)
8615 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
8617 /* There are two extra relocations for each subsequent
8618 PLT entry: an R_ARM_32 relocation for the GOT entry,
8619 and an R_ARM_32 relocation for the PLT entry. */
8620 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
8625 h
->plt
.offset
= (bfd_vma
) -1;
8631 h
->plt
.offset
= (bfd_vma
) -1;
8635 if (h
->got
.refcount
> 0)
8639 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
8642 /* Make sure this symbol is output as a dynamic symbol.
8643 Undefined weak syms won't yet be marked as dynamic. */
8644 if (h
->dynindx
== -1
8645 && !h
->forced_local
)
8647 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8651 if (!htab
->symbian_p
)
8654 h
->got
.offset
= s
->size
;
8656 if (tls_type
== GOT_UNKNOWN
)
8659 if (tls_type
== GOT_NORMAL
)
8660 /* Non-TLS symbols need one GOT slot. */
8664 if (tls_type
& GOT_TLS_GD
)
8665 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
8667 if (tls_type
& GOT_TLS_IE
)
8668 /* R_ARM_TLS_IE32 needs one GOT slot. */
8672 dyn
= htab
->root
.dynamic_sections_created
;
8675 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
8677 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
8680 if (tls_type
!= GOT_NORMAL
8681 && (info
->shared
|| indx
!= 0)
8682 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8683 || h
->root
.type
!= bfd_link_hash_undefweak
))
8685 if (tls_type
& GOT_TLS_IE
)
8686 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8688 if (tls_type
& GOT_TLS_GD
)
8689 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8691 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
8692 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8694 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8695 || h
->root
.type
!= bfd_link_hash_undefweak
)
8697 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8698 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8702 h
->got
.offset
= (bfd_vma
) -1;
8704 /* Allocate stubs for exported Thumb functions on v4t. */
8705 if (!htab
->use_blx
&& h
->dynindx
!= -1
8707 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
8708 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
8710 struct elf_link_hash_entry
* th
;
8711 struct bfd_link_hash_entry
* bh
;
8712 struct elf_link_hash_entry
* myh
;
8716 /* Create a new symbol to regist the real location of the function. */
8717 s
= h
->root
.u
.def
.section
;
8718 sprintf(name
, "__real_%s", h
->root
.root
.string
);
8719 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
8720 name
, BSF_GLOBAL
, s
,
8721 h
->root
.u
.def
.value
,
8722 NULL
, TRUE
, FALSE
, &bh
);
8724 myh
= (struct elf_link_hash_entry
*) bh
;
8725 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
8726 myh
->forced_local
= 1;
8727 eh
->export_glue
= myh
;
8728 th
= record_arm_to_thumb_glue (info
, h
);
8729 /* Point the symbol at the stub. */
8730 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
8731 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
8732 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
8735 if (eh
->relocs_copied
== NULL
)
8738 /* In the shared -Bsymbolic case, discard space allocated for
8739 dynamic pc-relative relocs against symbols which turn out to be
8740 defined in regular objects. For the normal shared case, discard
8741 space for pc-relative relocs that have become local due to symbol
8742 visibility changes. */
8744 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
8746 /* The only relocs that use pc_count are R_ARM_REL32 and
8747 R_ARM_REL32_NOI, which will appear on something like
8748 ".long foo - .". We want calls to protected symbols to resolve
8749 directly to the function rather than going via the plt. If people
8750 want function pointer comparisons to work as expected then they
8751 should avoid writing assembly like ".long foo - .". */
8752 if (SYMBOL_CALLS_LOCAL (info
, h
))
8754 struct elf32_arm_relocs_copied
**pp
;
8756 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
8758 p
->count
-= p
->pc_count
;
8767 /* Also discard relocs on undefined weak syms with non-default
8769 if (eh
->relocs_copied
!= NULL
8770 && h
->root
.type
== bfd_link_hash_undefweak
)
8772 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8773 eh
->relocs_copied
= NULL
;
8775 /* Make sure undefined weak symbols are output as a dynamic
8777 else if (h
->dynindx
== -1
8778 && !h
->forced_local
)
8780 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8785 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
8786 && h
->root
.type
== bfd_link_hash_new
)
8788 /* Output absolute symbols so that we can create relocations
8789 against them. For normal symbols we output a relocation
8790 against the section that contains them. */
8791 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8798 /* For the non-shared case, discard space for relocs against
8799 symbols which turn out to need copy relocs or are not
8805 || (htab
->root
.dynamic_sections_created
8806 && (h
->root
.type
== bfd_link_hash_undefweak
8807 || h
->root
.type
== bfd_link_hash_undefined
))))
8809 /* Make sure this symbol is output as a dynamic symbol.
8810 Undefined weak syms won't yet be marked as dynamic. */
8811 if (h
->dynindx
== -1
8812 && !h
->forced_local
)
8814 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8818 /* If that succeeded, we know we'll be keeping all the
8820 if (h
->dynindx
!= -1)
8824 eh
->relocs_copied
= NULL
;
8829 /* Finally, allocate space. */
8830 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
8832 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
8833 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
8839 /* Find any dynamic relocs that apply to read-only sections. */
8842 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
*h
, PTR inf
)
8844 struct elf32_arm_link_hash_entry
*eh
;
8845 struct elf32_arm_relocs_copied
*p
;
8847 if (h
->root
.type
== bfd_link_hash_warning
)
8848 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8850 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8851 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
8853 asection
*s
= p
->section
;
8855 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8857 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
8859 info
->flags
|= DF_TEXTREL
;
8861 /* Not an error, just cut short the traversal. */
8869 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info
*info
,
8872 struct elf32_arm_link_hash_table
*globals
;
8874 globals
= elf32_arm_hash_table (info
);
8875 globals
->byteswap_code
= byteswap_code
;
8878 /* Set the sizes of the dynamic sections. */
8881 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
8882 struct bfd_link_info
* info
)
8889 struct elf32_arm_link_hash_table
*htab
;
8891 htab
= elf32_arm_hash_table (info
);
8892 dynobj
= elf_hash_table (info
)->dynobj
;
8893 BFD_ASSERT (dynobj
!= NULL
);
8894 check_use_blx (htab
);
8896 if (elf_hash_table (info
)->dynamic_sections_created
)
8898 /* Set the contents of the .interp section to the interpreter. */
8899 if (info
->executable
)
8901 s
= bfd_get_section_by_name (dynobj
, ".interp");
8902 BFD_ASSERT (s
!= NULL
);
8903 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8904 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8908 /* Set up .got offsets for local syms, and space for local dynamic
8910 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8912 bfd_signed_vma
*local_got
;
8913 bfd_signed_vma
*end_local_got
;
8914 char *local_tls_type
;
8915 bfd_size_type locsymcount
;
8916 Elf_Internal_Shdr
*symtab_hdr
;
8919 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
8922 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8924 struct elf32_arm_relocs_copied
*p
;
8926 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8928 if (!bfd_is_abs_section (p
->section
)
8929 && bfd_is_abs_section (p
->section
->output_section
))
8931 /* Input section has been discarded, either because
8932 it is a copy of a linkonce section or due to
8933 linker script /DISCARD/, so we'll be discarding
8936 else if (p
->count
!= 0)
8938 srel
= elf_section_data (p
->section
)->sreloc
;
8939 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
8940 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
8941 info
->flags
|= DF_TEXTREL
;
8946 local_got
= elf_local_got_refcounts (ibfd
);
8950 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
8951 locsymcount
= symtab_hdr
->sh_info
;
8952 end_local_got
= local_got
+ locsymcount
;
8953 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
8955 srel
= htab
->srelgot
;
8956 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
8960 *local_got
= s
->size
;
8961 if (*local_tls_type
& GOT_TLS_GD
)
8962 /* TLS_GD relocs need an 8-byte structure in the GOT. */
8964 if (*local_tls_type
& GOT_TLS_IE
)
8966 if (*local_tls_type
== GOT_NORMAL
)
8969 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
8970 srel
->size
+= RELOC_SIZE (htab
);
8973 *local_got
= (bfd_vma
) -1;
8977 if (htab
->tls_ldm_got
.refcount
> 0)
8979 /* Allocate two GOT entries and one dynamic relocation (if necessary)
8980 for R_ARM_TLS_LDM32 relocations. */
8981 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
8982 htab
->sgot
->size
+= 8;
8984 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8987 htab
->tls_ldm_got
.offset
= -1;
8989 /* Allocate global sym .plt and .got entries, and space for global
8990 sym dynamic relocs. */
8991 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
8993 /* Here we rummage through the found bfds to collect glue information. */
8994 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8996 /* Initialise mapping tables for code/data. */
8997 bfd_elf32_arm_init_maps (ibfd
);
8999 if (!bfd_elf32_arm_process_before_allocation (ibfd
, info
)
9000 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd
, info
))
9001 /* xgettext:c-format */
9002 _bfd_error_handler (_("Errors encountered processing file %s"),
9006 /* The check_relocs and adjust_dynamic_symbol entry points have
9007 determined the sizes of the various dynamic sections. Allocate
9011 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9015 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9018 /* It's OK to base decisions on the section name, because none
9019 of the dynobj section names depend upon the input files. */
9020 name
= bfd_get_section_name (dynobj
, s
);
9022 if (strcmp (name
, ".plt") == 0)
9024 /* Remember whether there is a PLT. */
9027 else if (CONST_STRNEQ (name
, ".rel"))
9031 /* Remember whether there are any reloc sections other
9032 than .rel(a).plt and .rela.plt.unloaded. */
9033 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
9036 /* We use the reloc_count field as a counter if we need
9037 to copy relocs into the output file. */
9041 else if (! CONST_STRNEQ (name
, ".got")
9042 && strcmp (name
, ".dynbss") != 0)
9044 /* It's not one of our sections, so don't allocate space. */
9050 /* If we don't need this section, strip it from the
9051 output file. This is mostly to handle .rel(a).bss and
9052 .rel(a).plt. We must create both sections in
9053 create_dynamic_sections, because they must be created
9054 before the linker maps input sections to output
9055 sections. The linker does that before
9056 adjust_dynamic_symbol is called, and it is that
9057 function which decides whether anything needs to go
9058 into these sections. */
9059 s
->flags
|= SEC_EXCLUDE
;
9063 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9066 /* Allocate memory for the section contents. */
9067 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
9068 if (s
->contents
== NULL
)
9072 if (elf_hash_table (info
)->dynamic_sections_created
)
9074 /* Add some entries to the .dynamic section. We fill in the
9075 values later, in elf32_arm_finish_dynamic_sections, but we
9076 must add the entries now so that we get the correct size for
9077 the .dynamic section. The DT_DEBUG entry is filled in by the
9078 dynamic linker and used by the debugger. */
9079 #define add_dynamic_entry(TAG, VAL) \
9080 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9082 if (info
->executable
)
9084 if (!add_dynamic_entry (DT_DEBUG
, 0))
9090 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
9091 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9092 || !add_dynamic_entry (DT_PLTREL
,
9093 htab
->use_rel
? DT_REL
: DT_RELA
)
9094 || !add_dynamic_entry (DT_JMPREL
, 0))
9102 if (!add_dynamic_entry (DT_REL
, 0)
9103 || !add_dynamic_entry (DT_RELSZ
, 0)
9104 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
9109 if (!add_dynamic_entry (DT_RELA
, 0)
9110 || !add_dynamic_entry (DT_RELASZ
, 0)
9111 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
9116 /* If any dynamic relocs apply to a read-only section,
9117 then we need a DT_TEXTREL entry. */
9118 if ((info
->flags
& DF_TEXTREL
) == 0)
9119 elf_link_hash_traverse (&htab
->root
, elf32_arm_readonly_dynrelocs
,
9122 if ((info
->flags
& DF_TEXTREL
) != 0)
9124 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9128 #undef add_dynamic_entry
9133 /* Finish up dynamic symbol handling. We set the contents of various
9134 dynamic sections here. */
9137 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
, struct bfd_link_info
* info
,
9138 struct elf_link_hash_entry
* h
, Elf_Internal_Sym
* sym
)
9141 struct elf32_arm_link_hash_table
*htab
;
9142 struct elf32_arm_link_hash_entry
*eh
;
9144 dynobj
= elf_hash_table (info
)->dynobj
;
9145 htab
= elf32_arm_hash_table (info
);
9146 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9148 if (h
->plt
.offset
!= (bfd_vma
) -1)
9154 Elf_Internal_Rela rel
;
9156 /* This symbol has an entry in the procedure linkage table. Set
9159 BFD_ASSERT (h
->dynindx
!= -1);
9161 splt
= bfd_get_section_by_name (dynobj
, ".plt");
9162 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
9163 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
9165 /* Fill in the entry in the procedure linkage table. */
9166 if (htab
->symbian_p
)
9168 put_arm_insn (htab
, output_bfd
,
9169 elf32_arm_symbian_plt_entry
[0],
9170 splt
->contents
+ h
->plt
.offset
);
9171 bfd_put_32 (output_bfd
,
9172 elf32_arm_symbian_plt_entry
[1],
9173 splt
->contents
+ h
->plt
.offset
+ 4);
9175 /* Fill in the entry in the .rel.plt section. */
9176 rel
.r_offset
= (splt
->output_section
->vma
9177 + splt
->output_offset
9178 + h
->plt
.offset
+ 4);
9179 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
9181 /* Get the index in the procedure linkage table which
9182 corresponds to this symbol. This is the index of this symbol
9183 in all the symbols for which we are making plt entries. The
9184 first entry in the procedure linkage table is reserved. */
9185 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
9186 / htab
->plt_entry_size
);
9190 bfd_vma got_offset
, got_address
, plt_address
;
9191 bfd_vma got_displacement
;
9195 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
9196 BFD_ASSERT (sgot
!= NULL
);
9198 /* Get the offset into the .got.plt table of the entry that
9199 corresponds to this function. */
9200 got_offset
= eh
->plt_got_offset
;
9202 /* Get the index in the procedure linkage table which
9203 corresponds to this symbol. This is the index of this symbol
9204 in all the symbols for which we are making plt entries. The
9205 first three entries in .got.plt are reserved; after that
9206 symbols appear in the same order as in .plt. */
9207 plt_index
= (got_offset
- 12) / 4;
9209 /* Calculate the address of the GOT entry. */
9210 got_address
= (sgot
->output_section
->vma
9211 + sgot
->output_offset
9214 /* ...and the address of the PLT entry. */
9215 plt_address
= (splt
->output_section
->vma
9216 + splt
->output_offset
9219 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
9220 if (htab
->vxworks_p
&& info
->shared
)
9225 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
9227 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
9229 val
|= got_address
- sgot
->output_section
->vma
;
9231 val
|= plt_index
* RELOC_SIZE (htab
);
9232 if (i
== 2 || i
== 5)
9233 bfd_put_32 (output_bfd
, val
, ptr
);
9235 put_arm_insn (htab
, output_bfd
, val
, ptr
);
9238 else if (htab
->vxworks_p
)
9243 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
9245 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
9249 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
9251 val
|= plt_index
* RELOC_SIZE (htab
);
9252 if (i
== 2 || i
== 5)
9253 bfd_put_32 (output_bfd
, val
, ptr
);
9255 put_arm_insn (htab
, output_bfd
, val
, ptr
);
9258 loc
= (htab
->srelplt2
->contents
9259 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
9261 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
9262 referencing the GOT for this PLT entry. */
9263 rel
.r_offset
= plt_address
+ 8;
9264 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9265 rel
.r_addend
= got_offset
;
9266 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9267 loc
+= RELOC_SIZE (htab
);
9269 /* Create the R_ARM_ABS32 relocation referencing the
9270 beginning of the PLT for this GOT entry. */
9271 rel
.r_offset
= got_address
;
9272 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
9274 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9278 /* Calculate the displacement between the PLT slot and the
9279 entry in the GOT. The eight-byte offset accounts for the
9280 value produced by adding to pc in the first instruction
9282 got_displacement
= got_address
- (plt_address
+ 8);
9284 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
9286 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
9288 put_thumb_insn (htab
, output_bfd
,
9289 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
9290 put_thumb_insn (htab
, output_bfd
,
9291 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
9294 put_arm_insn (htab
, output_bfd
,
9295 elf32_arm_plt_entry
[0]
9296 | ((got_displacement
& 0x0ff00000) >> 20),
9298 put_arm_insn (htab
, output_bfd
,
9299 elf32_arm_plt_entry
[1]
9300 | ((got_displacement
& 0x000ff000) >> 12),
9302 put_arm_insn (htab
, output_bfd
,
9303 elf32_arm_plt_entry
[2]
9304 | (got_displacement
& 0x00000fff),
9306 #ifdef FOUR_WORD_PLT
9307 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
9311 /* Fill in the entry in the global offset table. */
9312 bfd_put_32 (output_bfd
,
9313 (splt
->output_section
->vma
9314 + splt
->output_offset
),
9315 sgot
->contents
+ got_offset
);
9317 /* Fill in the entry in the .rel(a).plt section. */
9319 rel
.r_offset
= got_address
;
9320 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
9323 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
9324 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9326 if (!h
->def_regular
)
9328 /* Mark the symbol as undefined, rather than as defined in
9329 the .plt section. Leave the value alone. */
9330 sym
->st_shndx
= SHN_UNDEF
;
9331 /* If the symbol is weak, we do need to clear the value.
9332 Otherwise, the PLT entry would provide a definition for
9333 the symbol even if the symbol wasn't defined anywhere,
9334 and so the symbol would never be NULL. */
9335 if (!h
->ref_regular_nonweak
)
9340 if (h
->got
.offset
!= (bfd_vma
) -1
9341 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
9342 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
9346 Elf_Internal_Rela rel
;
9350 /* This symbol has an entry in the global offset table. Set it
9352 sgot
= bfd_get_section_by_name (dynobj
, ".got");
9353 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
9354 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
9356 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
9358 rel
.r_offset
= (sgot
->output_section
->vma
9359 + sgot
->output_offset
9362 /* If this is a static link, or it is a -Bsymbolic link and the
9363 symbol is defined locally or was forced to be local because
9364 of a version file, we just want to emit a RELATIVE reloc.
9365 The entry in the global offset table will already have been
9366 initialized in the relocate_section function. */
9368 && SYMBOL_REFERENCES_LOCAL (info
, h
))
9370 BFD_ASSERT((h
->got
.offset
& 1) != 0);
9371 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
9374 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
9375 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
9380 BFD_ASSERT((h
->got
.offset
& 1) == 0);
9381 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
9382 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
9385 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
9386 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9392 Elf_Internal_Rela rel
;
9395 /* This symbol needs a copy reloc. Set it up. */
9396 BFD_ASSERT (h
->dynindx
!= -1
9397 && (h
->root
.type
== bfd_link_hash_defined
9398 || h
->root
.type
== bfd_link_hash_defweak
));
9400 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
9401 RELOC_SECTION (htab
, ".bss"));
9402 BFD_ASSERT (s
!= NULL
);
9405 rel
.r_offset
= (h
->root
.u
.def
.value
9406 + h
->root
.u
.def
.section
->output_section
->vma
9407 + h
->root
.u
.def
.section
->output_offset
);
9408 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
9409 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
9410 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9413 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
9414 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
9415 to the ".got" section. */
9416 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
9417 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
9418 sym
->st_shndx
= SHN_ABS
;
9423 /* Finish up the dynamic sections. */
9426 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
9432 dynobj
= elf_hash_table (info
)->dynobj
;
9434 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
9435 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
9436 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
9438 if (elf_hash_table (info
)->dynamic_sections_created
)
9441 Elf32_External_Dyn
*dyncon
, *dynconend
;
9442 struct elf32_arm_link_hash_table
*htab
;
9444 htab
= elf32_arm_hash_table (info
);
9445 splt
= bfd_get_section_by_name (dynobj
, ".plt");
9446 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
9448 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
9449 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9451 for (; dyncon
< dynconend
; dyncon
++)
9453 Elf_Internal_Dyn dyn
;
9457 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9468 goto get_vma_if_bpabi
;
9471 goto get_vma_if_bpabi
;
9474 goto get_vma_if_bpabi
;
9476 name
= ".gnu.version";
9477 goto get_vma_if_bpabi
;
9479 name
= ".gnu.version_d";
9480 goto get_vma_if_bpabi
;
9482 name
= ".gnu.version_r";
9483 goto get_vma_if_bpabi
;
9489 name
= RELOC_SECTION (htab
, ".plt");
9491 s
= bfd_get_section_by_name (output_bfd
, name
);
9492 BFD_ASSERT (s
!= NULL
);
9493 if (!htab
->symbian_p
)
9494 dyn
.d_un
.d_ptr
= s
->vma
;
9496 /* In the BPABI, tags in the PT_DYNAMIC section point
9497 at the file offset, not the memory address, for the
9498 convenience of the post linker. */
9499 dyn
.d_un
.d_ptr
= s
->filepos
;
9500 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9504 if (htab
->symbian_p
)
9509 s
= bfd_get_section_by_name (output_bfd
,
9510 RELOC_SECTION (htab
, ".plt"));
9511 BFD_ASSERT (s
!= NULL
);
9512 dyn
.d_un
.d_val
= s
->size
;
9513 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9518 if (!htab
->symbian_p
)
9520 /* My reading of the SVR4 ABI indicates that the
9521 procedure linkage table relocs (DT_JMPREL) should be
9522 included in the overall relocs (DT_REL). This is
9523 what Solaris does. However, UnixWare can not handle
9524 that case. Therefore, we override the DT_RELSZ entry
9525 here to make it not include the JMPREL relocs. Since
9526 the linker script arranges for .rel(a).plt to follow all
9527 other relocation sections, we don't have to worry
9528 about changing the DT_REL entry. */
9529 s
= bfd_get_section_by_name (output_bfd
,
9530 RELOC_SECTION (htab
, ".plt"));
9532 dyn
.d_un
.d_val
-= s
->size
;
9533 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9540 /* In the BPABI, the DT_REL tag must point at the file
9541 offset, not the VMA, of the first relocation
9542 section. So, we use code similar to that in
9543 elflink.c, but do not check for SHF_ALLOC on the
9544 relcoation section, since relocations sections are
9545 never allocated under the BPABI. The comments above
9546 about Unixware notwithstanding, we include all of the
9547 relocations here. */
9548 if (htab
->symbian_p
)
9551 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
9552 ? SHT_REL
: SHT_RELA
);
9554 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
9556 Elf_Internal_Shdr
*hdr
9557 = elf_elfsections (output_bfd
)[i
];
9558 if (hdr
->sh_type
== type
)
9560 if (dyn
.d_tag
== DT_RELSZ
9561 || dyn
.d_tag
== DT_RELASZ
)
9562 dyn
.d_un
.d_val
+= hdr
->sh_size
;
9563 else if ((ufile_ptr
) hdr
->sh_offset
9564 <= dyn
.d_un
.d_val
- 1)
9565 dyn
.d_un
.d_val
= hdr
->sh_offset
;
9568 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9572 /* Set the bottom bit of DT_INIT/FINI if the
9573 corresponding function is Thumb. */
9575 name
= info
->init_function
;
9578 name
= info
->fini_function
;
9580 /* If it wasn't set by elf_bfd_final_link
9581 then there is nothing to adjust. */
9582 if (dyn
.d_un
.d_val
!= 0)
9584 struct elf_link_hash_entry
* eh
;
9586 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
9587 FALSE
, FALSE
, TRUE
);
9588 if (eh
!= (struct elf_link_hash_entry
*) NULL
9589 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
9591 dyn
.d_un
.d_val
|= 1;
9592 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9599 /* Fill in the first entry in the procedure linkage table. */
9600 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
9602 const bfd_vma
*plt0_entry
;
9603 bfd_vma got_address
, plt_address
, got_displacement
;
9605 /* Calculate the addresses of the GOT and PLT. */
9606 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
9607 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
9609 if (htab
->vxworks_p
)
9611 /* The VxWorks GOT is relocated by the dynamic linker.
9612 Therefore, we must emit relocations rather than simply
9613 computing the values now. */
9614 Elf_Internal_Rela rel
;
9616 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
9617 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
9618 splt
->contents
+ 0);
9619 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
9620 splt
->contents
+ 4);
9621 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
9622 splt
->contents
+ 8);
9623 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
9625 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
9626 rel
.r_offset
= plt_address
+ 12;
9627 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9629 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
9630 htab
->srelplt2
->contents
);
9634 got_displacement
= got_address
- (plt_address
+ 16);
9636 plt0_entry
= elf32_arm_plt0_entry
;
9637 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
9638 splt
->contents
+ 0);
9639 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
9640 splt
->contents
+ 4);
9641 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
9642 splt
->contents
+ 8);
9643 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
9644 splt
->contents
+ 12);
9646 #ifdef FOUR_WORD_PLT
9647 /* The displacement value goes in the otherwise-unused
9648 last word of the second entry. */
9649 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
9651 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
9656 /* UnixWare sets the entsize of .plt to 4, although that doesn't
9657 really seem like the right value. */
9658 if (splt
->output_section
->owner
== output_bfd
)
9659 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
9661 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
9663 /* Correct the .rel(a).plt.unloaded relocations. They will have
9664 incorrect symbol indexes. */
9668 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
9669 / htab
->plt_entry_size
);
9670 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
9672 for (; num_plts
; num_plts
--)
9674 Elf_Internal_Rela rel
;
9676 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
9677 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9678 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
9679 p
+= RELOC_SIZE (htab
);
9681 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
9682 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
9683 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
9684 p
+= RELOC_SIZE (htab
);
9689 /* Fill in the first three entries in the global offset table. */
9695 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
9697 bfd_put_32 (output_bfd
,
9698 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
9700 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
9701 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
9704 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
9711 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
9713 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
9714 struct elf32_arm_link_hash_table
*globals
;
9716 i_ehdrp
= elf_elfheader (abfd
);
9718 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
9719 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
9721 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
9722 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
9726 globals
= elf32_arm_hash_table (link_info
);
9727 if (globals
->byteswap_code
)
9728 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
9732 static enum elf_reloc_type_class
9733 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
9735 switch ((int) ELF32_R_TYPE (rela
->r_info
))
9737 case R_ARM_RELATIVE
:
9738 return reloc_class_relative
;
9739 case R_ARM_JUMP_SLOT
:
9740 return reloc_class_plt
;
9742 return reloc_class_copy
;
9744 return reloc_class_normal
;
9748 /* Set the right machine number for an Arm ELF file. */
9751 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
9753 if (hdr
->sh_type
== SHT_NOTE
)
9754 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
9760 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
9762 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
9765 /* Return TRUE if this is an unwinding table entry. */
9768 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
9770 return (CONST_STRNEQ (name
, ELF_STRING_ARM_unwind
)
9771 || CONST_STRNEQ (name
, ELF_STRING_ARM_unwind_once
));
9775 /* Set the type and flags for an ARM section. We do this by
9776 the section name, which is a hack, but ought to work. */
9779 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
9783 name
= bfd_get_section_name (abfd
, sec
);
9785 if (is_arm_elf_unwind_section_name (abfd
, name
))
9787 hdr
->sh_type
= SHT_ARM_EXIDX
;
9788 hdr
->sh_flags
|= SHF_LINK_ORDER
;
9790 else if (strcmp(name
, ".ARM.attributes") == 0)
9792 hdr
->sh_type
= SHT_ARM_ATTRIBUTES
;
9797 /* Parse an Arm EABI attributes section. */
9799 elf32_arm_parse_attributes (bfd
*abfd
, Elf_Internal_Shdr
* hdr
)
9805 contents
= bfd_malloc (hdr
->sh_size
);
9808 if (!bfd_get_section_contents (abfd
, hdr
->bfd_section
, contents
, 0,
9817 len
= hdr
->sh_size
- 1;
9821 bfd_vma section_len
;
9823 section_len
= bfd_get_32 (abfd
, p
);
9825 if (section_len
> len
)
9828 namelen
= strlen ((char *)p
) + 1;
9829 section_len
-= namelen
+ 4;
9830 if (strcmp((char *)p
, "aeabi") != 0)
9832 /* Vendor section. Ignore it. */
9833 p
+= namelen
+ section_len
;
9838 while (section_len
> 0)
9843 bfd_vma subsection_len
;
9846 tag
= read_unsigned_leb128 (abfd
, p
, &n
);
9848 subsection_len
= bfd_get_32 (abfd
, p
);
9850 if (subsection_len
> section_len
)
9851 subsection_len
= section_len
;
9852 section_len
-= subsection_len
;
9853 subsection_len
-= n
+ 4;
9854 end
= p
+ subsection_len
;
9860 bfd_boolean is_string
;
9862 tag
= read_unsigned_leb128 (abfd
, p
, &n
);
9864 if (tag
== 4 || tag
== 5)
9869 is_string
= (tag
& 1) != 0;
9870 if (tag
== Tag_compatibility
)
9872 val
= read_unsigned_leb128 (abfd
, p
, &n
);
9874 elf32_arm_add_eabi_attr_compat (abfd
, val
,
9876 p
+= strlen ((char *)p
) + 1;
9880 elf32_arm_add_eabi_attr_string (abfd
, tag
,
9882 p
+= strlen ((char *)p
) + 1;
9886 val
= read_unsigned_leb128 (abfd
, p
, &n
);
9888 elf32_arm_add_eabi_attr_int (abfd
, tag
, val
);
9894 /* Don't have anywhere convenient to attach these.
9895 Fall through for now. */
9897 /* Ignore things we don't kow about. */
9898 p
+= subsection_len
;
9909 /* Handle an ARM specific section when reading an object file. This is
9910 called when bfd_section_from_shdr finds a section with an unknown
9914 elf32_arm_section_from_shdr (bfd
*abfd
,
9915 Elf_Internal_Shdr
* hdr
,
9919 /* There ought to be a place to keep ELF backend specific flags, but
9920 at the moment there isn't one. We just keep track of the
9921 sections by their name, instead. Fortunately, the ABI gives
9922 names for all the ARM specific sections, so we will probably get
9924 switch (hdr
->sh_type
)
9927 case SHT_ARM_PREEMPTMAP
:
9928 case SHT_ARM_ATTRIBUTES
:
9935 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
9938 if (hdr
->sh_type
== SHT_ARM_ATTRIBUTES
)
9939 elf32_arm_parse_attributes(abfd
, hdr
);
9943 /* A structure used to record a list of sections, independently
9944 of the next and prev fields in the asection structure. */
9945 typedef struct section_list
9948 struct section_list
* next
;
9949 struct section_list
* prev
;
9953 /* Unfortunately we need to keep a list of sections for which
9954 an _arm_elf_section_data structure has been allocated. This
9955 is because it is possible for functions like elf32_arm_write_section
9956 to be called on a section which has had an elf_data_structure
9957 allocated for it (and so the used_by_bfd field is valid) but
9958 for which the ARM extended version of this structure - the
9959 _arm_elf_section_data structure - has not been allocated. */
9960 static section_list
* sections_with_arm_elf_section_data
= NULL
;
9963 record_section_with_arm_elf_section_data (asection
* sec
)
9965 struct section_list
* entry
;
9967 entry
= bfd_malloc (sizeof (* entry
));
9971 entry
->next
= sections_with_arm_elf_section_data
;
9973 if (entry
->next
!= NULL
)
9974 entry
->next
->prev
= entry
;
9975 sections_with_arm_elf_section_data
= entry
;
9978 static struct section_list
*
9979 find_arm_elf_section_entry (asection
* sec
)
9981 struct section_list
* entry
;
9982 static struct section_list
* last_entry
= NULL
;
9984 /* This is a short cut for the typical case where the sections are added
9985 to the sections_with_arm_elf_section_data list in forward order and
9986 then looked up here in backwards order. This makes a real difference
9987 to the ld-srec/sec64k.exp linker test. */
9988 entry
= sections_with_arm_elf_section_data
;
9989 if (last_entry
!= NULL
)
9991 if (last_entry
->sec
== sec
)
9993 else if (last_entry
->next
!= NULL
9994 && last_entry
->next
->sec
== sec
)
9995 entry
= last_entry
->next
;
9998 for (; entry
; entry
= entry
->next
)
9999 if (entry
->sec
== sec
)
10003 /* Record the entry prior to this one - it is the entry we are most
10004 likely to want to locate next time. Also this way if we have been
10005 called from unrecord_section_with_arm_elf_section_data() we will not
10006 be caching a pointer that is about to be freed. */
10007 last_entry
= entry
->prev
;
10012 static _arm_elf_section_data
*
10013 get_arm_elf_section_data (asection
* sec
)
10015 struct section_list
* entry
;
10017 entry
= find_arm_elf_section_entry (sec
);
10020 return elf32_arm_section_data (entry
->sec
);
10026 unrecord_section_with_arm_elf_section_data (asection
* sec
)
10028 struct section_list
* entry
;
10030 entry
= find_arm_elf_section_entry (sec
);
10034 if (entry
->prev
!= NULL
)
10035 entry
->prev
->next
= entry
->next
;
10036 if (entry
->next
!= NULL
)
10037 entry
->next
->prev
= entry
->prev
;
10038 if (entry
== sections_with_arm_elf_section_data
)
10039 sections_with_arm_elf_section_data
= entry
->next
;
10048 struct bfd_link_info
*info
;
10051 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
10052 asection
*, struct elf_link_hash_entry
*);
10053 } output_arch_syminfo
;
10055 enum map_symbol_type
10063 /* Output a single PLT mapping symbol. */
10066 elf32_arm_ouput_plt_map_sym (output_arch_syminfo
*osi
,
10067 enum map_symbol_type type
,
10070 static const char *names
[3] = {"$a", "$t", "$d"};
10071 struct elf32_arm_link_hash_table
*htab
;
10072 Elf_Internal_Sym sym
;
10074 htab
= elf32_arm_hash_table (osi
->info
);
10075 sym
.st_value
= osi
->sec
->output_section
->vma
10076 + osi
->sec
->output_offset
10080 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
10081 sym
.st_shndx
= osi
->sec_shndx
;
10082 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
))
10088 /* Output mapping symbols for PLT entries associated with H. */
10091 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
10093 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
10094 struct elf32_arm_link_hash_table
*htab
;
10095 struct elf32_arm_link_hash_entry
*eh
;
10098 htab
= elf32_arm_hash_table (osi
->info
);
10100 if (h
->root
.type
== bfd_link_hash_indirect
)
10103 if (h
->root
.type
== bfd_link_hash_warning
)
10104 /* When warning symbols are created, they **replace** the "real"
10105 entry in the hash table, thus we never get to see the real
10106 symbol in a hash traversal. So look at it now. */
10107 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10109 if (h
->plt
.offset
== (bfd_vma
) -1)
10112 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10113 addr
= h
->plt
.offset
;
10114 if (htab
->symbian_p
)
10116 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
10118 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
10121 else if (htab
->vxworks_p
)
10123 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
10125 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
10127 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
10129 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
10134 bfd_boolean thumb_stub
;
10136 thumb_stub
= eh
->plt_thumb_refcount
> 0 && !htab
->use_blx
;
10139 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
10142 #ifdef FOUR_WORD_PLT
10143 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
10145 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
10148 /* A three-word PLT with no Thumb thunk contains only Arm code,
10149 so only need to output a mapping symbol for the first PLT entry and
10150 entries with thumb thunks. */
10151 if (thumb_stub
|| addr
== 20)
10153 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
10163 /* Output mapping symbols for linker generated sections. */
10166 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
10167 struct bfd_link_info
*info
,
10168 void *finfo
, bfd_boolean (*func
) (void *, const char *,
10169 Elf_Internal_Sym
*,
10171 struct elf_link_hash_entry
*))
10173 output_arch_syminfo osi
;
10174 struct elf32_arm_link_hash_table
*htab
;
10176 bfd_size_type size
;
10178 htab
= elf32_arm_hash_table (info
);
10179 check_use_blx(htab
);
10185 /* ARM->Thumb glue. */
10186 if (htab
->arm_glue_size
> 0)
10188 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
10189 ARM2THUMB_GLUE_SECTION_NAME
);
10191 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
10192 (output_bfd
, osi
.sec
->output_section
);
10193 if (info
->shared
|| htab
->root
.is_relocatable_executable
10194 || htab
->pic_veneer
)
10195 size
= ARM2THUMB_PIC_GLUE_SIZE
;
10196 else if (htab
->use_blx
)
10197 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
10199 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
10201 for (offset
= 0; offset
< htab
->arm_glue_size
; offset
+= size
)
10203 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, offset
);
10204 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, offset
+ size
- 4);
10208 /* Thumb->ARM glue. */
10209 if (htab
->thumb_glue_size
> 0)
10211 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
10212 THUMB2ARM_GLUE_SECTION_NAME
);
10214 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
10215 (output_bfd
, osi
.sec
->output_section
);
10216 size
= THUMB2ARM_GLUE_SIZE
;
10218 for (offset
= 0; offset
< htab
->thumb_glue_size
; offset
+= size
)
10220 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_THUMB
, offset
);
10221 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, offset
+ 4);
10225 /* Finally, output mapping symbols for the PLT. */
10226 if (!htab
->splt
|| htab
->splt
->size
== 0)
10229 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
10230 htab
->splt
->output_section
);
10231 osi
.sec
= htab
->splt
;
10232 /* Output mapping symbols for the plt header. SymbianOS does not have a
10234 if (htab
->vxworks_p
)
10236 /* VxWorks shared libraries have no PLT header. */
10239 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
10241 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 12))
10245 else if (!htab
->symbian_p
)
10247 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
10249 #ifndef FOUR_WORD_PLT
10250 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 16))
10255 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
10259 /* Allocate target specific section data. */
10262 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
10264 if (!sec
->used_by_bfd
)
10266 _arm_elf_section_data
*sdata
;
10267 bfd_size_type amt
= sizeof (*sdata
);
10269 sdata
= bfd_zalloc (abfd
, amt
);
10272 sec
->used_by_bfd
= sdata
;
10275 record_section_with_arm_elf_section_data (sec
);
10277 return _bfd_elf_new_section_hook (abfd
, sec
);
10281 /* Used to order a list of mapping symbols by address. */
10284 elf32_arm_compare_mapping (const void * a
, const void * b
)
10286 return ((const elf32_arm_section_map
*) a
)->vma
10287 > ((const elf32_arm_section_map
*) b
)->vma
;
10291 /* Do code byteswapping. Return FALSE afterwards so that the section is
10292 written out as normal. */
10295 elf32_arm_write_section (bfd
*output_bfd
,
10296 struct bfd_link_info
*link_info
, asection
*sec
,
10297 bfd_byte
*contents
)
10299 int mapcount
, errcount
;
10300 _arm_elf_section_data
*arm_data
;
10301 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
10302 elf32_arm_section_map
*map
;
10303 elf32_vfp11_erratum_list
*errnode
;
10306 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
10310 /* If this section has not been allocated an _arm_elf_section_data
10311 structure then we cannot record anything. */
10312 arm_data
= get_arm_elf_section_data (sec
);
10313 if (arm_data
== NULL
)
10316 mapcount
= arm_data
->mapcount
;
10317 map
= arm_data
->map
;
10318 errcount
= arm_data
->erratumcount
;
10322 unsigned int endianflip
= bfd_big_endian (output_bfd
) ? 3 : 0;
10324 for (errnode
= arm_data
->erratumlist
; errnode
!= 0;
10325 errnode
= errnode
->next
)
10327 bfd_vma index
= errnode
->vma
- offset
;
10329 switch (errnode
->type
)
10331 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
10333 bfd_vma branch_to_veneer
;
10334 /* Original condition code of instruction, plus bit mask for
10335 ARM B instruction. */
10336 unsigned int insn
= (errnode
->u
.b
.vfp_insn
& 0xf0000000)
10339 /* The instruction is before the label. */
10342 /* Above offset included in -4 below. */
10343 branch_to_veneer
= errnode
->u
.b
.veneer
->vma
10344 - errnode
->vma
- 4;
10346 if ((signed) branch_to_veneer
< -(1 << 25)
10347 || (signed) branch_to_veneer
>= (1 << 25))
10348 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
10349 "range"), output_bfd
);
10351 insn
|= (branch_to_veneer
>> 2) & 0xffffff;
10352 contents
[endianflip
^ index
] = insn
& 0xff;
10353 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
10354 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
10355 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
10359 case VFP11_ERRATUM_ARM_VENEER
:
10361 bfd_vma branch_from_veneer
;
10364 /* Take size of veneer into account. */
10365 branch_from_veneer
= errnode
->u
.v
.branch
->vma
10366 - errnode
->vma
- 12;
10368 if ((signed) branch_from_veneer
< -(1 << 25)
10369 || (signed) branch_from_veneer
>= (1 << 25))
10370 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
10371 "range"), output_bfd
);
10373 /* Original instruction. */
10374 insn
= errnode
->u
.v
.branch
->u
.b
.vfp_insn
;
10375 contents
[endianflip
^ index
] = insn
& 0xff;
10376 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
10377 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
10378 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
10380 /* Branch back to insn after original insn. */
10381 insn
= 0xea000000 | ((branch_from_veneer
>> 2) & 0xffffff);
10382 contents
[endianflip
^ (index
+ 4)] = insn
& 0xff;
10383 contents
[endianflip
^ (index
+ 5)] = (insn
>> 8) & 0xff;
10384 contents
[endianflip
^ (index
+ 6)] = (insn
>> 16) & 0xff;
10385 contents
[endianflip
^ (index
+ 7)] = (insn
>> 24) & 0xff;
10398 if (globals
->byteswap_code
)
10400 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
10403 for (i
= 0; i
< mapcount
; i
++)
10405 if (i
== mapcount
- 1)
10408 end
= map
[i
+ 1].vma
;
10410 switch (map
[i
].type
)
10413 /* Byte swap code words. */
10414 while (ptr
+ 3 < end
)
10416 tmp
= contents
[ptr
];
10417 contents
[ptr
] = contents
[ptr
+ 3];
10418 contents
[ptr
+ 3] = tmp
;
10419 tmp
= contents
[ptr
+ 1];
10420 contents
[ptr
+ 1] = contents
[ptr
+ 2];
10421 contents
[ptr
+ 2] = tmp
;
10427 /* Byte swap code halfwords. */
10428 while (ptr
+ 1 < end
)
10430 tmp
= contents
[ptr
];
10431 contents
[ptr
] = contents
[ptr
+ 1];
10432 contents
[ptr
+ 1] = tmp
;
10438 /* Leave data alone. */
10446 arm_data
->mapcount
= 0;
10447 arm_data
->mapsize
= 0;
10448 arm_data
->map
= NULL
;
10449 unrecord_section_with_arm_elf_section_data (sec
);
10455 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
10457 void * ignore ATTRIBUTE_UNUSED
)
10459 unrecord_section_with_arm_elf_section_data (sec
);
10463 elf32_arm_close_and_cleanup (bfd
* abfd
)
10465 if (abfd
->sections
)
10466 bfd_map_over_sections (abfd
,
10467 unrecord_section_via_map_over_sections
,
10470 return _bfd_elf_close_and_cleanup (abfd
);
10474 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
10476 if (abfd
->sections
)
10477 bfd_map_over_sections (abfd
,
10478 unrecord_section_via_map_over_sections
,
10481 return _bfd_free_cached_info (abfd
);
10484 /* Display STT_ARM_TFUNC symbols as functions. */
10487 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
10490 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
10492 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
10493 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
10497 /* Mangle thumb function symbols as we read them in. */
10500 elf32_arm_swap_symbol_in (bfd
* abfd
,
10503 Elf_Internal_Sym
*dst
)
10505 if (!bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
10508 /* New EABI objects mark thumb function symbols by setting the low bit of
10509 the address. Turn these into STT_ARM_TFUNC. */
10510 if (ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
10511 && (dst
->st_value
& 1))
10513 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
10514 dst
->st_value
&= ~(bfd_vma
) 1;
10520 /* Mangle thumb function symbols as we write them out. */
10523 elf32_arm_swap_symbol_out (bfd
*abfd
,
10524 const Elf_Internal_Sym
*src
,
10528 Elf_Internal_Sym newsym
;
10530 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
10531 of the address set, as per the new EABI. We do this unconditionally
10532 because objcopy does not set the elf header flags until after
10533 it writes out the symbol table. */
10534 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
10537 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
10538 if (newsym
.st_shndx
!= SHN_UNDEF
)
10540 /* Do this only for defined symbols. At link type, the static
10541 linker will simulate the work of dynamic linker of resolving
10542 symbols and will carry over the thumbness of found symbols to
10543 the output symbol table. It's not clear how it happens, but
10544 the thumbness of undefined symbols can well be different at
10545 runtime, and writing '1' for them will be confusing for users
10546 and possibly for dynamic linker itself.
10548 newsym
.st_value
|= 1;
10553 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
10556 /* Add the PT_ARM_EXIDX program header. */
10559 elf32_arm_modify_segment_map (bfd
*abfd
,
10560 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
10562 struct elf_segment_map
*m
;
10565 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
10566 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
10568 /* If there is already a PT_ARM_EXIDX header, then we do not
10569 want to add another one. This situation arises when running
10570 "strip"; the input binary already has the header. */
10571 m
= elf_tdata (abfd
)->segment_map
;
10572 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
10576 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
10579 m
->p_type
= PT_ARM_EXIDX
;
10581 m
->sections
[0] = sec
;
10583 m
->next
= elf_tdata (abfd
)->segment_map
;
10584 elf_tdata (abfd
)->segment_map
= m
;
10591 /* We may add a PT_ARM_EXIDX program header. */
10594 elf32_arm_additional_program_headers (bfd
*abfd
,
10595 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
10599 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
10600 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
10606 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
10608 elf32_arm_is_function_type (unsigned int type
)
10610 return (type
== STT_FUNC
) || (type
== STT_ARM_TFUNC
);
10613 /* We use this to override swap_symbol_in and swap_symbol_out. */
10614 const struct elf_size_info elf32_arm_size_info
= {
10615 sizeof (Elf32_External_Ehdr
),
10616 sizeof (Elf32_External_Phdr
),
10617 sizeof (Elf32_External_Shdr
),
10618 sizeof (Elf32_External_Rel
),
10619 sizeof (Elf32_External_Rela
),
10620 sizeof (Elf32_External_Sym
),
10621 sizeof (Elf32_External_Dyn
),
10622 sizeof (Elf_External_Note
),
10626 ELFCLASS32
, EV_CURRENT
,
10627 bfd_elf32_write_out_phdrs
,
10628 bfd_elf32_write_shdrs_and_ehdr
,
10629 bfd_elf32_write_relocs
,
10630 elf32_arm_swap_symbol_in
,
10631 elf32_arm_swap_symbol_out
,
10632 bfd_elf32_slurp_reloc_table
,
10633 bfd_elf32_slurp_symbol_table
,
10634 bfd_elf32_swap_dyn_in
,
10635 bfd_elf32_swap_dyn_out
,
10636 bfd_elf32_swap_reloc_in
,
10637 bfd_elf32_swap_reloc_out
,
10638 bfd_elf32_swap_reloca_in
,
10639 bfd_elf32_swap_reloca_out
10642 #define ELF_ARCH bfd_arch_arm
10643 #define ELF_MACHINE_CODE EM_ARM
10644 #ifdef __QNXTARGET__
10645 #define ELF_MAXPAGESIZE 0x1000
10647 #define ELF_MAXPAGESIZE 0x8000
10649 #define ELF_MINPAGESIZE 0x1000
10650 #define ELF_COMMONPAGESIZE 0x1000
10652 #define bfd_elf32_mkobject elf32_arm_mkobject
10654 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
10655 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
10656 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
10657 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
10658 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
10659 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
10660 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
10661 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
10662 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
10663 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
10664 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
10665 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
10666 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
10667 #define bfd_elf32_bfd_final_link elf32_arm_bfd_final_link
10669 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
10670 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
10671 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
10672 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
10673 #define elf_backend_check_relocs elf32_arm_check_relocs
10674 #define elf_backend_relocate_section elf32_arm_relocate_section
10675 #define elf_backend_write_section elf32_arm_write_section
10676 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
10677 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
10678 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
10679 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
10680 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
10681 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
10682 #define elf_backend_post_process_headers elf32_arm_post_process_headers
10683 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
10684 #define elf_backend_object_p elf32_arm_object_p
10685 #define elf_backend_section_flags elf32_arm_section_flags
10686 #define elf_backend_fake_sections elf32_arm_fake_sections
10687 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
10688 #define elf_backend_final_write_processing elf32_arm_final_write_processing
10689 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
10690 #define elf_backend_symbol_processing elf32_arm_symbol_processing
10691 #define elf_backend_size_info elf32_arm_size_info
10692 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
10693 #define elf_backend_additional_program_headers \
10694 elf32_arm_additional_program_headers
10695 #define elf_backend_output_arch_local_syms \
10696 elf32_arm_output_arch_local_syms
10697 #define elf_backend_begin_write_processing \
10698 elf32_arm_begin_write_processing
10699 #define elf_backend_is_function_type elf32_arm_is_function_type
10701 #define elf_backend_can_refcount 1
10702 #define elf_backend_can_gc_sections 1
10703 #define elf_backend_plt_readonly 1
10704 #define elf_backend_want_got_plt 1
10705 #define elf_backend_want_plt_sym 0
10706 #define elf_backend_may_use_rel_p 1
10707 #define elf_backend_may_use_rela_p 0
10708 #define elf_backend_default_use_rela_p 0
10710 #define elf_backend_got_header_size 12
10712 #include "elf32-target.h"
10714 /* VxWorks Targets */
10716 #undef TARGET_LITTLE_SYM
10717 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
10718 #undef TARGET_LITTLE_NAME
10719 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
10720 #undef TARGET_BIG_SYM
10721 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
10722 #undef TARGET_BIG_NAME
10723 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
10725 /* Like elf32_arm_link_hash_table_create -- but overrides
10726 appropriately for VxWorks. */
10727 static struct bfd_link_hash_table
*
10728 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
10730 struct bfd_link_hash_table
*ret
;
10732 ret
= elf32_arm_link_hash_table_create (abfd
);
10735 struct elf32_arm_link_hash_table
*htab
10736 = (struct elf32_arm_link_hash_table
*) ret
;
10738 htab
->vxworks_p
= 1;
10744 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10746 elf32_arm_final_write_processing (abfd
, linker
);
10747 elf_vxworks_final_write_processing (abfd
, linker
);
10751 #define elf32_bed elf32_arm_vxworks_bed
10753 #undef bfd_elf32_bfd_link_hash_table_create
10754 #define bfd_elf32_bfd_link_hash_table_create \
10755 elf32_arm_vxworks_link_hash_table_create
10756 #undef elf_backend_add_symbol_hook
10757 #define elf_backend_add_symbol_hook \
10758 elf_vxworks_add_symbol_hook
10759 #undef elf_backend_final_write_processing
10760 #define elf_backend_final_write_processing \
10761 elf32_arm_vxworks_final_write_processing
10762 #undef elf_backend_emit_relocs
10763 #define elf_backend_emit_relocs \
10764 elf_vxworks_emit_relocs
10766 #undef elf_backend_may_use_rel_p
10767 #define elf_backend_may_use_rel_p 0
10768 #undef elf_backend_may_use_rela_p
10769 #define elf_backend_may_use_rela_p 1
10770 #undef elf_backend_default_use_rela_p
10771 #define elf_backend_default_use_rela_p 1
10772 #undef elf_backend_want_plt_sym
10773 #define elf_backend_want_plt_sym 1
10774 #undef ELF_MAXPAGESIZE
10775 #define ELF_MAXPAGESIZE 0x1000
10777 #include "elf32-target.h"
10780 /* Symbian OS Targets */
10782 #undef TARGET_LITTLE_SYM
10783 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
10784 #undef TARGET_LITTLE_NAME
10785 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
10786 #undef TARGET_BIG_SYM
10787 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
10788 #undef TARGET_BIG_NAME
10789 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
10791 /* Like elf32_arm_link_hash_table_create -- but overrides
10792 appropriately for Symbian OS. */
10793 static struct bfd_link_hash_table
*
10794 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
10796 struct bfd_link_hash_table
*ret
;
10798 ret
= elf32_arm_link_hash_table_create (abfd
);
10801 struct elf32_arm_link_hash_table
*htab
10802 = (struct elf32_arm_link_hash_table
*)ret
;
10803 /* There is no PLT header for Symbian OS. */
10804 htab
->plt_header_size
= 0;
10805 /* The PLT entries are each three instructions. */
10806 htab
->plt_entry_size
= 4 * NUM_ELEM (elf32_arm_symbian_plt_entry
);
10807 htab
->symbian_p
= 1;
10808 /* Symbian uses armv5t or above, so use_blx is always true. */
10810 htab
->root
.is_relocatable_executable
= 1;
10815 static const struct bfd_elf_special_section
10816 elf32_arm_symbian_special_sections
[] =
10818 /* In a BPABI executable, the dynamic linking sections do not go in
10819 the loadable read-only segment. The post-linker may wish to
10820 refer to these sections, but they are not part of the final
10822 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC
, 0 },
10823 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB
, 0 },
10824 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM
, 0 },
10825 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS
, 0 },
10826 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH
, 0 },
10827 /* These sections do not need to be writable as the SymbianOS
10828 postlinker will arrange things so that no dynamic relocation is
10830 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
10831 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
10832 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
10833 { NULL
, 0, 0, 0, 0 }
10837 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
10838 struct bfd_link_info
*link_info
)
10840 /* BPABI objects are never loaded directly by an OS kernel; they are
10841 processed by a postlinker first, into an OS-specific format. If
10842 the D_PAGED bit is set on the file, BFD will align segments on
10843 page boundaries, so that an OS can directly map the file. With
10844 BPABI objects, that just results in wasted space. In addition,
10845 because we clear the D_PAGED bit, map_sections_to_segments will
10846 recognize that the program headers should not be mapped into any
10847 loadable segment. */
10848 abfd
->flags
&= ~D_PAGED
;
10849 elf32_arm_begin_write_processing(abfd
, link_info
);
10853 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
10854 struct bfd_link_info
*info
)
10856 struct elf_segment_map
*m
;
10859 /* BPABI shared libraries and executables should have a PT_DYNAMIC
10860 segment. However, because the .dynamic section is not marked
10861 with SEC_LOAD, the generic ELF code will not create such a
10863 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
10866 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
10867 if (m
->p_type
== PT_DYNAMIC
)
10872 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
10873 m
->next
= elf_tdata (abfd
)->segment_map
;
10874 elf_tdata (abfd
)->segment_map
= m
;
10878 /* Also call the generic arm routine. */
10879 return elf32_arm_modify_segment_map (abfd
, info
);
10883 #define elf32_bed elf32_arm_symbian_bed
10885 /* The dynamic sections are not allocated on SymbianOS; the postlinker
10886 will process them and then discard them. */
10887 #undef ELF_DYNAMIC_SEC_FLAGS
10888 #define ELF_DYNAMIC_SEC_FLAGS \
10889 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
10891 #undef bfd_elf32_bfd_link_hash_table_create
10892 #define bfd_elf32_bfd_link_hash_table_create \
10893 elf32_arm_symbian_link_hash_table_create
10894 #undef elf_backend_add_symbol_hook
10896 #undef elf_backend_special_sections
10897 #define elf_backend_special_sections elf32_arm_symbian_special_sections
10899 #undef elf_backend_begin_write_processing
10900 #define elf_backend_begin_write_processing \
10901 elf32_arm_symbian_begin_write_processing
10902 #undef elf_backend_final_write_processing
10903 #define elf_backend_final_write_processing \
10904 elf32_arm_final_write_processing
10905 #undef elf_backend_emit_relocs
10907 #undef elf_backend_modify_segment_map
10908 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
10910 /* There is no .got section for BPABI objects, and hence no header. */
10911 #undef elf_backend_got_header_size
10912 #define elf_backend_got_header_size 0
10914 /* Similarly, there is no .got.plt section. */
10915 #undef elf_backend_want_got_plt
10916 #define elf_backend_want_got_plt 0
10918 #undef elf_backend_may_use_rel_p
10919 #define elf_backend_may_use_rel_p 1
10920 #undef elf_backend_may_use_rela_p
10921 #define elf_backend_may_use_rela_p 0
10922 #undef elf_backend_default_use_rela_p
10923 #define elf_backend_default_use_rela_p 0
10924 #undef elf_backend_want_plt_sym
10925 #define elf_backend_want_plt_sym 0
10926 #undef ELF_MAXPAGESIZE
10927 #define ELF_MAXPAGESIZE 0x8000
10929 #include "elf32-target.h"