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 /* Support for core dump NOTE sections */
1792 elf32_arm_nabi_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1797 switch (note
->descsz
)
1802 case 148: /* Linux/ARM 32-bit*/
1804 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1807 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1816 /* Make a ".reg/999" section. */
1817 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1818 size
, note
->descpos
+ offset
);
1822 elf32_arm_nabi_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1824 switch (note
->descsz
)
1829 case 124: /* Linux/ARM elf_prpsinfo */
1830 elf_tdata (abfd
)->core_program
1831 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
1832 elf_tdata (abfd
)->core_command
1833 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
1836 /* Note that for some reason, a spurious space is tacked
1837 onto the end of the args in some (at least one anyway)
1838 implementations, so strip it off if it exists. */
1841 char *command
= elf_tdata (abfd
)->core_command
;
1842 int n
= strlen (command
);
1844 if (0 < n
&& command
[n
- 1] == ' ')
1845 command
[n
- 1] = '\0';
1851 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1852 #define TARGET_LITTLE_NAME "elf32-littlearm"
1853 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1854 #define TARGET_BIG_NAME "elf32-bigarm"
1856 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1857 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1859 typedef unsigned long int insn32
;
1860 typedef unsigned short int insn16
;
1862 /* In lieu of proper flags, assume all EABIv4 or later objects are
1864 #define INTERWORK_FLAG(abfd) \
1865 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1866 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1868 /* The linker script knows the section names for placement.
1869 The entry_names are used to do simple name mangling on the stubs.
1870 Given a function name, and its type, the stub can be found. The
1871 name can be changed. The only requirement is the %s be present. */
1872 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1873 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1875 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1876 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1878 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1879 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1881 /* The name of the dynamic interpreter. This is put in the .interp
1883 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1885 #ifdef FOUR_WORD_PLT
1887 /* The first entry in a procedure linkage table looks like
1888 this. It is set up so that any shared library function that is
1889 called before the relocation has been set up calls the dynamic
1891 static const bfd_vma elf32_arm_plt0_entry
[] =
1893 0xe52de004, /* str lr, [sp, #-4]! */
1894 0xe59fe010, /* ldr lr, [pc, #16] */
1895 0xe08fe00e, /* add lr, pc, lr */
1896 0xe5bef008, /* ldr pc, [lr, #8]! */
1899 /* Subsequent entries in a procedure linkage table look like
1901 static const bfd_vma elf32_arm_plt_entry
[] =
1903 0xe28fc600, /* add ip, pc, #NN */
1904 0xe28cca00, /* add ip, ip, #NN */
1905 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1906 0x00000000, /* unused */
1911 /* The first entry in a procedure linkage table looks like
1912 this. It is set up so that any shared library function that is
1913 called before the relocation has been set up calls the dynamic
1915 static const bfd_vma elf32_arm_plt0_entry
[] =
1917 0xe52de004, /* str lr, [sp, #-4]! */
1918 0xe59fe004, /* ldr lr, [pc, #4] */
1919 0xe08fe00e, /* add lr, pc, lr */
1920 0xe5bef008, /* ldr pc, [lr, #8]! */
1921 0x00000000, /* &GOT[0] - . */
1924 /* Subsequent entries in a procedure linkage table look like
1926 static const bfd_vma elf32_arm_plt_entry
[] =
1928 0xe28fc600, /* add ip, pc, #0xNN00000 */
1929 0xe28cca00, /* add ip, ip, #0xNN000 */
1930 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1935 /* The format of the first entry in the procedure linkage table
1936 for a VxWorks executable. */
1937 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry
[] =
1939 0xe52dc008, /* str ip,[sp,#-8]! */
1940 0xe59fc000, /* ldr ip,[pc] */
1941 0xe59cf008, /* ldr pc,[ip,#8] */
1942 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1945 /* The format of subsequent entries in a VxWorks executable. */
1946 static const bfd_vma elf32_arm_vxworks_exec_plt_entry
[] =
1948 0xe59fc000, /* ldr ip,[pc] */
1949 0xe59cf000, /* ldr pc,[ip] */
1950 0x00000000, /* .long @got */
1951 0xe59fc000, /* ldr ip,[pc] */
1952 0xea000000, /* b _PLT */
1953 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1956 /* The format of entries in a VxWorks shared library. */
1957 static const bfd_vma elf32_arm_vxworks_shared_plt_entry
[] =
1959 0xe59fc000, /* ldr ip,[pc] */
1960 0xe79cf009, /* ldr pc,[ip,r9] */
1961 0x00000000, /* .long @got */
1962 0xe59fc000, /* ldr ip,[pc] */
1963 0xe599f008, /* ldr pc,[r9,#8] */
1964 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1967 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1968 #define PLT_THUMB_STUB_SIZE 4
1969 static const bfd_vma elf32_arm_plt_thumb_stub
[] =
1975 /* The entries in a PLT when using a DLL-based target with multiple
1977 static const bfd_vma elf32_arm_symbian_plt_entry
[] =
1979 0xe51ff004, /* ldr pc, [pc, #-4] */
1980 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
1983 /* Used to build a map of a section. This is required for mixed-endian
1986 typedef struct elf32_elf_section_map
1991 elf32_arm_section_map
;
1993 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
1997 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
,
1998 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
,
1999 VFP11_ERRATUM_ARM_VENEER
,
2000 VFP11_ERRATUM_THUMB_VENEER
2002 elf32_vfp11_erratum_type
;
2004 typedef struct elf32_vfp11_erratum_list
2006 struct elf32_vfp11_erratum_list
*next
;
2012 struct elf32_vfp11_erratum_list
*veneer
;
2013 unsigned int vfp_insn
;
2017 struct elf32_vfp11_erratum_list
*branch
;
2021 elf32_vfp11_erratum_type type
;
2023 elf32_vfp11_erratum_list
;
2025 typedef struct _arm_elf_section_data
2027 struct bfd_elf_section_data elf
;
2028 unsigned int mapcount
;
2029 unsigned int mapsize
;
2030 elf32_arm_section_map
*map
;
2031 unsigned int erratumcount
;
2032 elf32_vfp11_erratum_list
*erratumlist
;
2034 _arm_elf_section_data
;
2036 #define elf32_arm_section_data(sec) \
2037 ((_arm_elf_section_data *) elf_section_data (sec))
2039 /* The size of the thread control block. */
2042 #define NUM_KNOWN_ATTRIBUTES 32
2044 typedef struct aeabi_attribute
2051 typedef struct aeabi_attribute_list
2053 struct aeabi_attribute_list
*next
;
2055 aeabi_attribute attr
;
2056 } aeabi_attribute_list
;
2058 struct elf32_arm_obj_tdata
2060 struct elf_obj_tdata root
;
2062 /* tls_type for each local got entry. */
2063 char *local_got_tls_type
;
2065 aeabi_attribute known_eabi_attributes
[NUM_KNOWN_ATTRIBUTES
];
2066 aeabi_attribute_list
*other_eabi_attributes
;
2068 /* Zero to warn when linking objects with incompatible enum sizes. */
2069 int no_enum_size_warning
;
2072 #define elf32_arm_tdata(abfd) \
2073 ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any)
2075 #define elf32_arm_local_got_tls_type(abfd) \
2076 (elf32_arm_tdata (abfd)->local_got_tls_type)
2079 elf32_arm_mkobject (bfd
*abfd
)
2081 if (abfd
->tdata
.any
== NULL
)
2083 bfd_size_type amt
= sizeof (struct elf32_arm_obj_tdata
);
2084 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2085 if (abfd
->tdata
.any
== NULL
)
2088 return bfd_elf_mkobject (abfd
);
2091 /* The ARM linker needs to keep track of the number of relocs that it
2092 decides to copy in check_relocs for each symbol. This is so that
2093 it can discard PC relative relocs if it doesn't need them when
2094 linking with -Bsymbolic. We store the information in a field
2095 extending the regular ELF linker hash table. */
2097 /* This structure keeps track of the number of relocs we have copied
2098 for a given symbol. */
2099 struct elf32_arm_relocs_copied
2102 struct elf32_arm_relocs_copied
* next
;
2103 /* A section in dynobj. */
2105 /* Number of relocs copied in this section. */
2106 bfd_size_type count
;
2107 /* Number of PC-relative relocs copied in this section. */
2108 bfd_size_type pc_count
;
2111 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2113 /* Arm ELF linker hash entry. */
2114 struct elf32_arm_link_hash_entry
2116 struct elf_link_hash_entry root
;
2118 /* Number of PC relative relocs copied for this symbol. */
2119 struct elf32_arm_relocs_copied
* relocs_copied
;
2121 /* We reference count Thumb references to a PLT entry separately,
2122 so that we can emit the Thumb trampoline only if needed. */
2123 bfd_signed_vma plt_thumb_refcount
;
2125 /* Since PLT entries have variable size if the Thumb prologue is
2126 used, we need to record the index into .got.plt instead of
2127 recomputing it from the PLT offset. */
2128 bfd_signed_vma plt_got_offset
;
2130 #define GOT_UNKNOWN 0
2131 #define GOT_NORMAL 1
2132 #define GOT_TLS_GD 2
2133 #define GOT_TLS_IE 4
2134 unsigned char tls_type
;
2136 /* The symbol marking the real symbol location for exported thumb
2137 symbols with Arm stubs. */
2138 struct elf_link_hash_entry
*export_glue
;
2141 /* Traverse an arm ELF linker hash table. */
2142 #define elf32_arm_link_hash_traverse(table, func, info) \
2143 (elf_link_hash_traverse \
2145 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2148 /* Get the ARM elf linker hash table from a link_info structure. */
2149 #define elf32_arm_hash_table(info) \
2150 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2152 /* ARM ELF linker hash table. */
2153 struct elf32_arm_link_hash_table
2155 /* The main hash table. */
2156 struct elf_link_hash_table root
;
2158 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2159 bfd_size_type thumb_glue_size
;
2161 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2162 bfd_size_type arm_glue_size
;
2164 /* The size in bytes of the section containing glue for VFP11 erratum
2166 bfd_size_type vfp11_erratum_glue_size
;
2168 /* An arbitrary input BFD chosen to hold the glue sections. */
2169 bfd
* bfd_of_glue_owner
;
2171 /* Nonzero to output a BE8 image. */
2174 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2175 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2178 /* The relocation to use for R_ARM_TARGET2 relocations. */
2181 /* Nonzero to fix BX instructions for ARMv4 targets. */
2184 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2187 /* What sort of code sequences we should look for which may trigger the
2188 VFP11 denorm erratum. */
2189 bfd_arm_vfp11_fix vfp11_fix
;
2191 /* Global counter for the number of fixes we have emitted. */
2192 int num_vfp11_fixes
;
2194 /* Nonzero to force PIC branch veneers. */
2197 /* The number of bytes in the initial entry in the PLT. */
2198 bfd_size_type plt_header_size
;
2200 /* The number of bytes in the subsequent PLT etries. */
2201 bfd_size_type plt_entry_size
;
2203 /* True if the target system is VxWorks. */
2206 /* True if the target system is Symbian OS. */
2209 /* True if the target uses REL relocations. */
2212 /* Short-cuts to get to dynamic linker sections. */
2221 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2224 /* Data for R_ARM_TLS_LDM32 relocations. */
2226 bfd_signed_vma refcount
;
2230 /* Small local sym to section mapping cache. */
2231 struct sym_sec_cache sym_sec
;
2233 /* For convenience in allocate_dynrelocs. */
2237 /* Create an entry in an ARM ELF linker hash table. */
2239 static struct bfd_hash_entry
*
2240 elf32_arm_link_hash_newfunc (struct bfd_hash_entry
* entry
,
2241 struct bfd_hash_table
* table
,
2242 const char * string
)
2244 struct elf32_arm_link_hash_entry
* ret
=
2245 (struct elf32_arm_link_hash_entry
*) entry
;
2247 /* Allocate the structure if it has not already been allocated by a
2249 if (ret
== (struct elf32_arm_link_hash_entry
*) NULL
)
2250 ret
= bfd_hash_allocate (table
, sizeof (struct elf32_arm_link_hash_entry
));
2252 return (struct bfd_hash_entry
*) ret
;
2254 /* Call the allocation method of the superclass. */
2255 ret
= ((struct elf32_arm_link_hash_entry
*)
2256 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2260 ret
->relocs_copied
= NULL
;
2261 ret
->tls_type
= GOT_UNKNOWN
;
2262 ret
->plt_thumb_refcount
= 0;
2263 ret
->plt_got_offset
= -1;
2264 ret
->export_glue
= NULL
;
2267 return (struct bfd_hash_entry
*) ret
;
2270 /* Return true if NAME is the name of the relocation section associated
2274 reloc_section_p (struct elf32_arm_link_hash_table
*htab
,
2275 const char *name
, asection
*s
)
2278 return CONST_STRNEQ (name
, ".rel") && strcmp (s
->name
, name
+ 4) == 0;
2280 return CONST_STRNEQ (name
, ".rela") && strcmp (s
->name
, name
+ 5) == 0;
2283 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2284 shortcuts to them in our hash table. */
2287 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2289 struct elf32_arm_link_hash_table
*htab
;
2291 htab
= elf32_arm_hash_table (info
);
2292 /* BPABI objects never have a GOT, or associated sections. */
2293 if (htab
->symbian_p
)
2296 if (! _bfd_elf_create_got_section (dynobj
, info
))
2299 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
2300 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
2301 if (!htab
->sgot
|| !htab
->sgotplt
)
2304 htab
->srelgot
= bfd_make_section_with_flags (dynobj
,
2305 RELOC_SECTION (htab
, ".got"),
2306 (SEC_ALLOC
| SEC_LOAD
2309 | SEC_LINKER_CREATED
2311 if (htab
->srelgot
== NULL
2312 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
2317 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2318 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2322 elf32_arm_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
2324 struct elf32_arm_link_hash_table
*htab
;
2326 htab
= elf32_arm_hash_table (info
);
2327 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
2330 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
2333 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
2334 htab
->srelplt
= bfd_get_section_by_name (dynobj
,
2335 RELOC_SECTION (htab
, ".plt"));
2336 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
2338 htab
->srelbss
= bfd_get_section_by_name (dynobj
,
2339 RELOC_SECTION (htab
, ".bss"));
2341 if (htab
->vxworks_p
)
2343 if (!elf_vxworks_create_dynamic_sections (dynobj
, info
, &htab
->srelplt2
))
2348 htab
->plt_header_size
= 0;
2349 htab
->plt_entry_size
2350 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry
);
2354 htab
->plt_header_size
2355 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry
);
2356 htab
->plt_entry_size
2357 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry
);
2364 || (!info
->shared
&& !htab
->srelbss
))
2370 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2373 elf32_arm_copy_indirect_symbol (struct bfd_link_info
*info
,
2374 struct elf_link_hash_entry
*dir
,
2375 struct elf_link_hash_entry
*ind
)
2377 struct elf32_arm_link_hash_entry
*edir
, *eind
;
2379 edir
= (struct elf32_arm_link_hash_entry
*) dir
;
2380 eind
= (struct elf32_arm_link_hash_entry
*) ind
;
2382 if (eind
->relocs_copied
!= NULL
)
2384 if (edir
->relocs_copied
!= NULL
)
2386 struct elf32_arm_relocs_copied
**pp
;
2387 struct elf32_arm_relocs_copied
*p
;
2389 /* Add reloc counts against the indirect sym to the direct sym
2390 list. Merge any entries against the same section. */
2391 for (pp
= &eind
->relocs_copied
; (p
= *pp
) != NULL
; )
2393 struct elf32_arm_relocs_copied
*q
;
2395 for (q
= edir
->relocs_copied
; q
!= NULL
; q
= q
->next
)
2396 if (q
->section
== p
->section
)
2398 q
->pc_count
+= p
->pc_count
;
2399 q
->count
+= p
->count
;
2406 *pp
= edir
->relocs_copied
;
2409 edir
->relocs_copied
= eind
->relocs_copied
;
2410 eind
->relocs_copied
= NULL
;
2413 if (ind
->root
.type
== bfd_link_hash_indirect
)
2415 /* Copy over PLT info. */
2416 edir
->plt_thumb_refcount
+= eind
->plt_thumb_refcount
;
2417 eind
->plt_thumb_refcount
= 0;
2419 if (dir
->got
.refcount
<= 0)
2421 edir
->tls_type
= eind
->tls_type
;
2422 eind
->tls_type
= GOT_UNKNOWN
;
2426 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2429 /* Create an ARM elf linker hash table. */
2431 static struct bfd_link_hash_table
*
2432 elf32_arm_link_hash_table_create (bfd
*abfd
)
2434 struct elf32_arm_link_hash_table
*ret
;
2435 bfd_size_type amt
= sizeof (struct elf32_arm_link_hash_table
);
2437 ret
= bfd_malloc (amt
);
2441 if (!_bfd_elf_link_hash_table_init (& ret
->root
, abfd
,
2442 elf32_arm_link_hash_newfunc
,
2443 sizeof (struct elf32_arm_link_hash_entry
)))
2450 ret
->sgotplt
= NULL
;
2451 ret
->srelgot
= NULL
;
2453 ret
->srelplt
= NULL
;
2454 ret
->sdynbss
= NULL
;
2455 ret
->srelbss
= NULL
;
2456 ret
->srelplt2
= NULL
;
2457 ret
->thumb_glue_size
= 0;
2458 ret
->arm_glue_size
= 0;
2459 ret
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
2460 ret
->vfp11_erratum_glue_size
= 0;
2461 ret
->num_vfp11_fixes
= 0;
2462 ret
->bfd_of_glue_owner
= NULL
;
2463 ret
->byteswap_code
= 0;
2464 ret
->target1_is_rel
= 0;
2465 ret
->target2_reloc
= R_ARM_NONE
;
2466 #ifdef FOUR_WORD_PLT
2467 ret
->plt_header_size
= 16;
2468 ret
->plt_entry_size
= 16;
2470 ret
->plt_header_size
= 20;
2471 ret
->plt_entry_size
= 12;
2478 ret
->sym_sec
.abfd
= NULL
;
2480 ret
->tls_ldm_got
.refcount
= 0;
2482 return &ret
->root
.root
;
2485 /* Locate the Thumb encoded calling stub for NAME. */
2487 static struct elf_link_hash_entry
*
2488 find_thumb_glue (struct bfd_link_info
*link_info
,
2490 char **error_message
)
2493 struct elf_link_hash_entry
*hash
;
2494 struct elf32_arm_link_hash_table
*hash_table
;
2496 /* We need a pointer to the armelf specific hash table. */
2497 hash_table
= elf32_arm_hash_table (link_info
);
2499 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2500 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2502 BFD_ASSERT (tmp_name
);
2504 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2506 hash
= elf_link_hash_lookup
2507 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2510 asprintf (error_message
, _("unable to find THUMB glue '%s' for '%s'"),
2518 /* Locate the ARM encoded calling stub for NAME. */
2520 static struct elf_link_hash_entry
*
2521 find_arm_glue (struct bfd_link_info
*link_info
,
2523 char **error_message
)
2526 struct elf_link_hash_entry
*myh
;
2527 struct elf32_arm_link_hash_table
*hash_table
;
2529 /* We need a pointer to the elfarm specific hash table. */
2530 hash_table
= elf32_arm_hash_table (link_info
);
2532 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2533 + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2535 BFD_ASSERT (tmp_name
);
2537 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2539 myh
= elf_link_hash_lookup
2540 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2543 asprintf (error_message
, _("unable to find ARM glue '%s' for '%s'"),
2551 /* ARM->Thumb glue (static images):
2555 ldr r12, __func_addr
2558 .word func @ behave as if you saw a ARM_32 reloc.
2560 (relocatable images)
2563 ldr r12, __func_offset
2570 #define ARM2THUMB_STATIC_GLUE_SIZE 12
2571 static const insn32 a2t1_ldr_insn
= 0xe59fc000;
2572 static const insn32 a2t2_bx_r12_insn
= 0xe12fff1c;
2573 static const insn32 a2t3_func_addr_insn
= 0x00000001;
2575 #define ARM2THUMB_PIC_GLUE_SIZE 16
2576 static const insn32 a2t1p_ldr_insn
= 0xe59fc004;
2577 static const insn32 a2t2p_add_pc_insn
= 0xe08cc00f;
2578 static const insn32 a2t3p_bx_r12_insn
= 0xe12fff1c;
2580 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
2584 __func_from_thumb: __func_from_thumb:
2586 nop ldr r6, __func_addr
2588 __func_change_to_arm: bx r6
2590 __func_back_to_thumb:
2596 #define THUMB2ARM_GLUE_SIZE 8
2597 static const insn16 t2a1_bx_pc_insn
= 0x4778;
2598 static const insn16 t2a2_noop_insn
= 0x46c0;
2599 static const insn32 t2a3_b_insn
= 0xea000000;
2601 #define VFP11_ERRATUM_VENEER_SIZE 8
2603 #ifndef ELFARM_NABI_C_INCLUDED
2605 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info
* info
)
2609 struct elf32_arm_link_hash_table
* globals
;
2611 globals
= elf32_arm_hash_table (info
);
2613 BFD_ASSERT (globals
!= NULL
);
2615 if (globals
->arm_glue_size
!= 0)
2617 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2619 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
2620 ARM2THUMB_GLUE_SECTION_NAME
);
2622 BFD_ASSERT (s
!= NULL
);
2624 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->arm_glue_size
);
2626 BFD_ASSERT (s
->size
== globals
->arm_glue_size
);
2630 if (globals
->thumb_glue_size
!= 0)
2632 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2634 s
= bfd_get_section_by_name
2635 (globals
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2637 BFD_ASSERT (s
!= NULL
);
2639 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->thumb_glue_size
);
2641 BFD_ASSERT (s
->size
== globals
->thumb_glue_size
);
2645 if (globals
->vfp11_erratum_glue_size
!= 0)
2647 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2649 s
= bfd_get_section_by_name
2650 (globals
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
2652 BFD_ASSERT (s
!= NULL
);
2654 foo
= bfd_alloc (globals
->bfd_of_glue_owner
,
2655 globals
->vfp11_erratum_glue_size
);
2657 BFD_ASSERT (s
->size
== globals
->vfp11_erratum_glue_size
);
2664 /* Allocate space and symbols for calling a Thumb function from Arm mode.
2665 returns the symbol identifying teh stub. */
2666 static struct elf_link_hash_entry
*
2667 record_arm_to_thumb_glue (struct bfd_link_info
* link_info
,
2668 struct elf_link_hash_entry
* h
)
2670 const char * name
= h
->root
.root
.string
;
2673 struct elf_link_hash_entry
* myh
;
2674 struct bfd_link_hash_entry
* bh
;
2675 struct elf32_arm_link_hash_table
* globals
;
2679 globals
= elf32_arm_hash_table (link_info
);
2681 BFD_ASSERT (globals
!= NULL
);
2682 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
2684 s
= bfd_get_section_by_name
2685 (globals
->bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
2687 BFD_ASSERT (s
!= NULL
);
2689 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
2691 BFD_ASSERT (tmp_name
);
2693 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
2695 myh
= elf_link_hash_lookup
2696 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2700 /* We've already seen this guy. */
2705 /* The only trick here is using hash_table->arm_glue_size as the value.
2706 Even though the section isn't allocated yet, this is where we will be
2709 val
= globals
->arm_glue_size
+ 1;
2710 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
2711 tmp_name
, BSF_GLOBAL
, s
, val
,
2712 NULL
, TRUE
, FALSE
, &bh
);
2714 myh
= (struct elf_link_hash_entry
*) bh
;
2715 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2716 myh
->forced_local
= 1;
2720 if (link_info
->shared
|| globals
->root
.is_relocatable_executable
2721 || globals
->pic_veneer
)
2722 size
= ARM2THUMB_PIC_GLUE_SIZE
;
2724 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
2727 globals
->arm_glue_size
+= size
;
2733 record_thumb_to_arm_glue (struct bfd_link_info
*link_info
,
2734 struct elf_link_hash_entry
*h
)
2736 const char *name
= h
->root
.root
.string
;
2739 struct elf_link_hash_entry
*myh
;
2740 struct bfd_link_hash_entry
*bh
;
2741 struct elf32_arm_link_hash_table
*hash_table
;
2744 hash_table
= elf32_arm_hash_table (link_info
);
2746 BFD_ASSERT (hash_table
!= NULL
);
2747 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
2749 s
= bfd_get_section_by_name
2750 (hash_table
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2752 BFD_ASSERT (s
!= NULL
);
2754 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2755 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
2757 BFD_ASSERT (tmp_name
);
2759 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
2761 myh
= elf_link_hash_lookup
2762 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
2766 /* We've already seen this guy. */
2772 val
= hash_table
->thumb_glue_size
+ 1;
2773 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2774 tmp_name
, BSF_GLOBAL
, s
, val
,
2775 NULL
, TRUE
, FALSE
, &bh
);
2777 /* If we mark it 'Thumb', the disassembler will do a better job. */
2778 myh
= (struct elf_link_hash_entry
*) bh
;
2779 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
2780 myh
->forced_local
= 1;
2784 #define CHANGE_TO_ARM "__%s_change_to_arm"
2785 #define BACK_FROM_ARM "__%s_back_from_arm"
2787 /* Allocate another symbol to mark where we switch to Arm mode. */
2788 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
2789 + strlen (CHANGE_TO_ARM
) + 1);
2791 BFD_ASSERT (tmp_name
);
2793 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
2796 val
= hash_table
->thumb_glue_size
+ 4,
2797 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2798 tmp_name
, BSF_LOCAL
, s
, val
,
2799 NULL
, TRUE
, FALSE
, &bh
);
2803 s
->size
+= THUMB2ARM_GLUE_SIZE
;
2804 hash_table
->thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
2810 /* Add an entry to the code/data map for section SEC. */
2813 elf32_arm_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
2815 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
2816 unsigned int newidx
;
2818 if (sec_data
->map
== NULL
)
2820 sec_data
->map
= bfd_malloc (sizeof (elf32_arm_section_map
));
2821 sec_data
->mapcount
= 0;
2822 sec_data
->mapsize
= 1;
2825 newidx
= sec_data
->mapcount
++;
2827 if (sec_data
->mapcount
> sec_data
->mapsize
)
2829 sec_data
->mapsize
*= 2;
2830 sec_data
->map
= bfd_realloc (sec_data
->map
, sec_data
->mapsize
2831 * sizeof (elf32_arm_section_map
));
2834 sec_data
->map
[newidx
].vma
= vma
;
2835 sec_data
->map
[newidx
].type
= type
;
2839 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
2840 veneers are handled for now. */
2843 record_vfp11_erratum_veneer (struct bfd_link_info
*link_info
,
2844 elf32_vfp11_erratum_list
*branch
,
2846 asection
*branch_sec
,
2847 unsigned int offset
)
2850 struct elf32_arm_link_hash_table
*hash_table
;
2852 struct elf_link_hash_entry
*myh
;
2853 struct bfd_link_hash_entry
*bh
;
2855 struct _arm_elf_section_data
*sec_data
;
2857 elf32_vfp11_erratum_list
*newerr
;
2859 hash_table
= elf32_arm_hash_table (link_info
);
2861 BFD_ASSERT (hash_table
!= NULL
);
2862 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
2864 s
= bfd_get_section_by_name
2865 (hash_table
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
2867 sec_data
= elf32_arm_section_data (s
);
2869 BFD_ASSERT (s
!= NULL
);
2871 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
2872 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
2874 BFD_ASSERT (tmp_name
);
2876 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
2877 hash_table
->num_vfp11_fixes
);
2879 myh
= elf_link_hash_lookup
2880 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
2882 BFD_ASSERT (myh
== NULL
);
2885 val
= hash_table
->vfp11_erratum_glue_size
;
2886 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
2887 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
2888 NULL
, TRUE
, FALSE
, &bh
);
2890 myh
= (struct elf_link_hash_entry
*) bh
;
2891 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2892 myh
->forced_local
= 1;
2894 /* Link veneer back to calling location. */
2895 errcount
= ++(sec_data
->erratumcount
);
2896 newerr
= bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
2898 newerr
->type
= VFP11_ERRATUM_ARM_VENEER
;
2900 newerr
->u
.v
.branch
= branch
;
2901 newerr
->u
.v
.id
= hash_table
->num_vfp11_fixes
;
2902 branch
->u
.b
.veneer
= newerr
;
2904 newerr
->next
= sec_data
->erratumlist
;
2905 sec_data
->erratumlist
= newerr
;
2907 /* A symbol for the return from the veneer. */
2908 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
2909 hash_table
->num_vfp11_fixes
);
2911 myh
= elf_link_hash_lookup
2912 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
2919 _bfd_generic_link_add_one_symbol (link_info
, branch_bfd
, tmp_name
, BSF_LOCAL
,
2920 branch_sec
, val
, NULL
, TRUE
, FALSE
, &bh
);
2922 myh
= (struct elf_link_hash_entry
*) bh
;
2923 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
2924 myh
->forced_local
= 1;
2928 /* Generate a mapping symbol for the veneer section, and explicitly add an
2929 entry for that symbol to the code/data map for the section. */
2930 if (hash_table
->vfp11_erratum_glue_size
== 0)
2933 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
2934 ever requires this erratum fix. */
2935 _bfd_generic_link_add_one_symbol (link_info
,
2936 hash_table
->bfd_of_glue_owner
, "$a",
2937 BSF_LOCAL
, s
, 0, NULL
,
2940 myh
= (struct elf_link_hash_entry
*) bh
;
2941 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
2942 myh
->forced_local
= 1;
2944 /* The elf32_arm_init_maps function only cares about symbols from input
2945 BFDs. We must make a note of this generated mapping symbol
2946 ourselves so that code byteswapping works properly in
2947 elf32_arm_write_section. */
2948 elf32_arm_section_map_add (s
, 'a', 0);
2951 s
->size
+= VFP11_ERRATUM_VENEER_SIZE
;
2952 hash_table
->vfp11_erratum_glue_size
+= VFP11_ERRATUM_VENEER_SIZE
;
2953 hash_table
->num_vfp11_fixes
++;
2955 /* The offset of the veneer. */
2959 /* Add the glue sections to ABFD. This function is called from the
2960 linker scripts in ld/emultempl/{armelf}.em. */
2963 bfd_elf32_arm_add_glue_sections_to_bfd (bfd
*abfd
,
2964 struct bfd_link_info
*info
)
2969 /* If we are only performing a partial
2970 link do not bother adding the glue. */
2971 if (info
->relocatable
)
2974 sec
= bfd_get_section_by_name (abfd
, ARM2THUMB_GLUE_SECTION_NAME
);
2978 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
2979 will prevent elf_link_input_bfd() from processing the contents
2981 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2982 | SEC_CODE
| SEC_READONLY
);
2984 sec
= bfd_make_section_with_flags (abfd
,
2985 ARM2THUMB_GLUE_SECTION_NAME
,
2989 || !bfd_set_section_alignment (abfd
, sec
, 2))
2992 /* Set the gc mark to prevent the section from being removed by garbage
2993 collection, despite the fact that no relocs refer to this section. */
2997 sec
= bfd_get_section_by_name (abfd
, THUMB2ARM_GLUE_SECTION_NAME
);
3001 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3002 | SEC_CODE
| SEC_READONLY
);
3004 sec
= bfd_make_section_with_flags (abfd
,
3005 THUMB2ARM_GLUE_SECTION_NAME
,
3009 || !bfd_set_section_alignment (abfd
, sec
, 2))
3015 sec
= bfd_get_section_by_name (abfd
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
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 VFP11_ERRATUM_VENEER_SECTION_NAME
,
3027 || !bfd_set_section_alignment (abfd
, sec
, 2))
3036 /* Select a BFD to be used to hold the sections used by the glue code.
3037 This function is called from the linker scripts in ld/emultempl/
3041 bfd_elf32_arm_get_bfd_for_interworking (bfd
*abfd
, struct bfd_link_info
*info
)
3043 struct elf32_arm_link_hash_table
*globals
;
3045 /* If we are only performing a partial link
3046 do not bother getting a bfd to hold the glue. */
3047 if (info
->relocatable
)
3050 /* Make sure we don't attach the glue sections to a dynamic object. */
3051 BFD_ASSERT (!(abfd
->flags
& DYNAMIC
));
3053 globals
= elf32_arm_hash_table (info
);
3055 BFD_ASSERT (globals
!= NULL
);
3057 if (globals
->bfd_of_glue_owner
!= NULL
)
3060 /* Save the bfd for later use. */
3061 globals
->bfd_of_glue_owner
= abfd
;
3066 static void check_use_blx(struct elf32_arm_link_hash_table
*globals
)
3068 if (elf32_arm_get_eabi_attr_int (globals
->obfd
, Tag_CPU_arch
) > 2)
3069 globals
->use_blx
= 1;
3073 bfd_elf32_arm_process_before_allocation (bfd
*abfd
,
3074 struct bfd_link_info
*link_info
)
3076 Elf_Internal_Shdr
*symtab_hdr
;
3077 Elf_Internal_Rela
*internal_relocs
= NULL
;
3078 Elf_Internal_Rela
*irel
, *irelend
;
3079 bfd_byte
*contents
= NULL
;
3082 struct elf32_arm_link_hash_table
*globals
;
3084 /* If we are only performing a partial link do not bother
3085 to construct any glue. */
3086 if (link_info
->relocatable
)
3089 /* Here we have a bfd that is to be included on the link. We have a hook
3090 to do reloc rummaging, before section sizes are nailed down. */
3091 globals
= elf32_arm_hash_table (link_info
);
3092 check_use_blx (globals
);
3094 BFD_ASSERT (globals
!= NULL
);
3095 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3097 if (globals
->byteswap_code
&& !bfd_big_endian (abfd
))
3099 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
3104 /* Rummage around all the relocs and map the glue vectors. */
3105 sec
= abfd
->sections
;
3110 for (; sec
!= NULL
; sec
= sec
->next
)
3112 if (sec
->reloc_count
== 0)
3115 if ((sec
->flags
& SEC_EXCLUDE
) != 0)
3118 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3120 /* Load the relocs. */
3122 = _bfd_elf_link_read_relocs (abfd
, sec
, (void *) NULL
,
3123 (Elf_Internal_Rela
*) NULL
, FALSE
);
3125 if (internal_relocs
== NULL
)
3128 irelend
= internal_relocs
+ sec
->reloc_count
;
3129 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
3132 unsigned long r_index
;
3134 struct elf_link_hash_entry
*h
;
3136 r_type
= ELF32_R_TYPE (irel
->r_info
);
3137 r_index
= ELF32_R_SYM (irel
->r_info
);
3139 /* These are the only relocation types we care about. */
3140 if ( r_type
!= R_ARM_PC24
3141 && r_type
!= R_ARM_PLT32
3142 && r_type
!= R_ARM_CALL
3143 && r_type
!= R_ARM_JUMP24
3144 && r_type
!= R_ARM_THM_CALL
)
3147 /* Get the section contents if we haven't done so already. */
3148 if (contents
== NULL
)
3150 /* Get cached copy if it exists. */
3151 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
3152 contents
= elf_section_data (sec
)->this_hdr
.contents
;
3155 /* Go get them off disk. */
3156 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
3161 /* If the relocation is not against a symbol it cannot concern us. */
3164 /* We don't care about local symbols. */
3165 if (r_index
< symtab_hdr
->sh_info
)
3168 /* This is an external symbol. */
3169 r_index
-= symtab_hdr
->sh_info
;
3170 h
= (struct elf_link_hash_entry
*)
3171 elf_sym_hashes (abfd
)[r_index
];
3173 /* If the relocation is against a static symbol it must be within
3174 the current section and so cannot be a cross ARM/Thumb relocation. */
3178 /* If the call will go through a PLT entry then we do not need
3180 if (globals
->splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
3189 /* This one is a call from arm code. We need to look up
3190 the target of the call. If it is a thumb target, we
3192 if (ELF_ST_TYPE(h
->type
) == STT_ARM_TFUNC
3193 && !(r_type
== R_ARM_CALL
&& globals
->use_blx
))
3194 record_arm_to_thumb_glue (link_info
, h
);
3197 case R_ARM_THM_CALL
:
3198 /* This one is a call from thumb code. We look
3199 up the target of the call. If it is not a thumb
3200 target, we insert glue. */
3201 if (ELF_ST_TYPE (h
->type
) != STT_ARM_TFUNC
&& !globals
->use_blx
)
3202 record_thumb_to_arm_glue (link_info
, h
);
3210 if (contents
!= NULL
3211 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3215 if (internal_relocs
!= NULL
3216 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3217 free (internal_relocs
);
3218 internal_relocs
= NULL
;
3224 if (contents
!= NULL
3225 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3227 if (internal_relocs
!= NULL
3228 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3229 free (internal_relocs
);
3236 /* Initialise maps of ARM/Thumb/data for input BFDs. */
3239 bfd_elf32_arm_init_maps (bfd
*abfd
)
3241 Elf_Internal_Sym
*isymbuf
;
3242 Elf_Internal_Shdr
*hdr
;
3243 unsigned int i
, localsyms
;
3245 if ((abfd
->flags
& DYNAMIC
) != 0)
3248 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3249 localsyms
= hdr
->sh_info
;
3251 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
3252 should contain the number of local symbols, which should come before any
3253 global symbols. Mapping symbols are always local. */
3254 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
,
3257 /* No internal symbols read? Skip this BFD. */
3258 if (isymbuf
== NULL
)
3261 for (i
= 0; i
< localsyms
; i
++)
3263 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
3264 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3268 && ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
3270 name
= bfd_elf_string_from_elf_section (abfd
,
3271 hdr
->sh_link
, isym
->st_name
);
3273 if (bfd_is_arm_special_symbol_name (name
,
3274 BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
3275 elf32_arm_section_map_add (sec
, name
[1], isym
->st_value
);
3282 bfd_elf32_arm_set_vfp11_fix (bfd
*obfd
, struct bfd_link_info
*link_info
)
3284 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
3285 aeabi_attribute
*out_attr
= elf32_arm_tdata (obfd
)->known_eabi_attributes
;
3287 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
3288 if (out_attr
[Tag_CPU_arch
].i
>= TAG_CPU_ARCH_V7
)
3290 switch (globals
->vfp11_fix
)
3292 case BFD_ARM_VFP11_FIX_DEFAULT
:
3293 case BFD_ARM_VFP11_FIX_NONE
:
3294 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
3298 /* Give a warning, but do as the user requests anyway. */
3299 (*_bfd_error_handler
) (_("%B: warning: selected VFP11 erratum "
3300 "workaround is not necessary for target architecture"), obfd
);
3303 else if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_DEFAULT
)
3304 /* For earlier architectures, we might need the workaround, but do not
3305 enable it by default. If users is running with broken hardware, they
3306 must enable the erratum fix explicitly. */
3307 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
3311 enum bfd_arm_vfp11_pipe
{
3318 /* Return a VFP register number. This is encoded as RX:X for single-precision
3319 registers, or X:RX for double-precision registers, where RX is the group of
3320 four bits in the instruction encoding and X is the single extension bit.
3321 RX and X fields are specified using their lowest (starting) bit. The return
3324 0...31: single-precision registers s0...s31
3325 32...63: double-precision registers d0...d31.
3327 Although X should be zero for VFP11 (encoding d0...d15 only), we might
3328 encounter VFP3 instructions, so we allow the full range for DP registers. */
3331 bfd_arm_vfp11_regno (unsigned int insn
, bfd_boolean is_double
, unsigned int rx
,
3335 return (((insn
>> rx
) & 0xf) | (((insn
>> x
) & 1) << 4)) + 32;
3337 return (((insn
>> rx
) & 0xf) << 1) | ((insn
>> x
) & 1);
3340 /* Set bits in *WMASK according to a register number REG as encoded by
3341 bfd_arm_vfp11_regno(). Ignore d16-d31. */
3344 bfd_arm_vfp11_write_mask (unsigned int *wmask
, unsigned int reg
)
3349 *wmask
|= 3 << ((reg
- 32) * 2);
3352 /* Return TRUE if WMASK overwrites anything in REGS. */
3355 bfd_arm_vfp11_antidependency (unsigned int wmask
, int *regs
, int numregs
)
3359 for (i
= 0; i
< numregs
; i
++)
3361 unsigned int reg
= regs
[i
];
3363 if (reg
< 32 && (wmask
& (1 << reg
)) != 0)
3371 if ((wmask
& (3 << (reg
* 2))) != 0)
3378 /* In this function, we're interested in two things: finding input registers
3379 for VFP data-processing instructions, and finding the set of registers which
3380 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
3381 hold the written set, so FLDM etc. are easy to deal with (we're only
3382 interested in 32 SP registers or 16 dp registers, due to the VFP version
3383 implemented by the chip in question). DP registers are marked by setting
3384 both SP registers in the write mask). */
3386 static enum bfd_arm_vfp11_pipe
3387 bfd_arm_vfp11_insn_decode (unsigned int insn
, unsigned int *destmask
, int *regs
,
3390 enum bfd_arm_vfp11_pipe pipe
= VFP11_BAD
;
3391 bfd_boolean is_double
= ((insn
& 0xf00) == 0xb00) ? 1 : 0;
3393 if ((insn
& 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
3396 unsigned int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
3397 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
3399 pqrs
= ((insn
& 0x00800000) >> 20)
3400 | ((insn
& 0x00300000) >> 19)
3401 | ((insn
& 0x00000040) >> 6);
3405 case 0: /* fmac[sd]. */
3406 case 1: /* fnmac[sd]. */
3407 case 2: /* fmsc[sd]. */
3408 case 3: /* fnmsc[sd]. */
3410 bfd_arm_vfp11_write_mask (destmask
, fd
);
3412 regs
[1] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
3417 case 4: /* fmul[sd]. */
3418 case 5: /* fnmul[sd]. */
3419 case 6: /* fadd[sd]. */
3420 case 7: /* fsub[sd]. */
3424 case 8: /* fdiv[sd]. */
3427 bfd_arm_vfp11_write_mask (destmask
, fd
);
3428 regs
[0] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
3433 case 15: /* extended opcode. */
3435 unsigned int extn
= ((insn
>> 15) & 0x1e)
3436 | ((insn
>> 7) & 1);
3440 case 0: /* fcpy[sd]. */
3441 case 1: /* fabs[sd]. */
3442 case 2: /* fneg[sd]. */
3443 case 8: /* fcmp[sd]. */
3444 case 9: /* fcmpe[sd]. */
3445 case 10: /* fcmpz[sd]. */
3446 case 11: /* fcmpez[sd]. */
3447 case 16: /* fuito[sd]. */
3448 case 17: /* fsito[sd]. */
3449 case 24: /* ftoui[sd]. */
3450 case 25: /* ftouiz[sd]. */
3451 case 26: /* ftosi[sd]. */
3452 case 27: /* ftosiz[sd]. */
3453 /* These instructions will not bounce due to underflow. */
3458 case 3: /* fsqrt[sd]. */
3459 /* fsqrt cannot underflow, but it can (perhaps) overwrite
3460 registers to cause the erratum in previous instructions. */
3461 bfd_arm_vfp11_write_mask (destmask
, fd
);
3465 case 15: /* fcvt{ds,sd}. */
3469 bfd_arm_vfp11_write_mask (destmask
, fd
);
3471 /* Only FCVTSD can underflow. */
3472 if ((insn
& 0x100) != 0)
3491 /* Two-register transfer. */
3492 else if ((insn
& 0x0fe00ed0) == 0x0c400a10)
3494 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
3496 if ((insn
& 0x100000) == 0)
3499 bfd_arm_vfp11_write_mask (destmask
, fm
);
3502 bfd_arm_vfp11_write_mask (destmask
, fm
);
3503 bfd_arm_vfp11_write_mask (destmask
, fm
+ 1);
3509 else if ((insn
& 0x0e100e00) == 0x0c100a00) /* A load insn. */
3511 int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
3512 unsigned int puw
= ((insn
>> 21) & 0x1) | (((insn
>> 23) & 3) << 1);
3516 case 0: /* Two-reg transfer. We should catch these above. */
3519 case 2: /* fldm[sdx]. */
3523 unsigned int i
, offset
= insn
& 0xff;
3528 for (i
= fd
; i
< fd
+ offset
; i
++)
3529 bfd_arm_vfp11_write_mask (destmask
, i
);
3533 case 4: /* fld[sd]. */
3535 bfd_arm_vfp11_write_mask (destmask
, fd
);
3544 /* Single-register transfer. Note L==0. */
3545 else if ((insn
& 0x0f100e10) == 0x0e000a10)
3547 unsigned int opcode
= (insn
>> 21) & 7;
3548 unsigned int fn
= bfd_arm_vfp11_regno (insn
, is_double
, 16, 7);
3552 case 0: /* fmsr/fmdlr. */
3553 case 1: /* fmdhr. */
3554 /* Mark fmdhr and fmdlr as writing to the whole of the DP
3555 destination register. I don't know if this is exactly right,
3556 but it is the conservative choice. */
3557 bfd_arm_vfp11_write_mask (destmask
, fn
);
3571 static int elf32_arm_compare_mapping (const void * a
, const void * b
);
3574 /* Look for potentially-troublesome code sequences which might trigger the
3575 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
3576 (available from ARM) for details of the erratum. A short version is
3577 described in ld.texinfo. */
3580 bfd_elf32_arm_vfp11_erratum_scan (bfd
*abfd
, struct bfd_link_info
*link_info
)
3583 bfd_byte
*contents
= NULL
;
3585 int regs
[3], numregs
= 0;
3586 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
3587 int use_vector
= (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_VECTOR
);
3589 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
3590 The states transition as follows:
3592 0 -> 1 (vector) or 0 -> 2 (scalar)
3593 A VFP FMAC-pipeline instruction has been seen. Fill
3594 regs[0]..regs[numregs-1] with its input operands. Remember this
3595 instruction in 'first_fmac'.
3598 Any instruction, except for a VFP instruction which overwrites
3603 A VFP instruction has been seen which overwrites any of regs[*].
3604 We must make a veneer! Reset state to 0 before examining next
3608 If we fail to match anything in state 2, reset to state 0 and reset
3609 the instruction pointer to the instruction after 'first_fmac'.
3611 If the VFP11 vector mode is in use, there must be at least two unrelated
3612 instructions between anti-dependent VFP11 instructions to properly avoid
3613 triggering the erratum, hence the use of the extra state 1.
3616 /* If we are only performing a partial link do not bother
3617 to construct any glue. */
3618 if (link_info
->relocatable
)
3621 /* We should have chosen a fix type by the time we get here. */
3622 BFD_ASSERT (globals
->vfp11_fix
!= BFD_ARM_VFP11_FIX_DEFAULT
);
3624 if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_NONE
)
3627 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3629 unsigned int i
, span
, first_fmac
= 0, veneer_of_insn
= 0;
3630 struct _arm_elf_section_data
*sec_data
;
3632 /* If we don't have executable progbits, we're not interested in this
3633 section. Also skip if section is to be excluded. */
3634 if (elf_section_type (sec
) != SHT_PROGBITS
3635 || (elf_section_flags (sec
) & SHF_EXECINSTR
) == 0
3636 || (sec
->flags
& SEC_EXCLUDE
) != 0
3637 || strcmp (sec
->name
, VFP11_ERRATUM_VENEER_SECTION_NAME
) == 0)
3640 sec_data
= elf32_arm_section_data (sec
);
3642 if (sec_data
->mapcount
== 0)
3645 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
3646 contents
= elf_section_data (sec
)->this_hdr
.contents
;
3647 else if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
3650 qsort (sec_data
->map
, sec_data
->mapcount
, sizeof (elf32_arm_section_map
),
3651 elf32_arm_compare_mapping
);
3653 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3655 unsigned int span_start
= sec_data
->map
[span
].vma
;
3656 unsigned int span_end
= (span
== sec_data
->mapcount
- 1)
3657 ? sec
->size
: sec_data
->map
[span
+ 1].vma
;
3658 char span_type
= sec_data
->map
[span
].type
;
3660 /* FIXME: Only ARM mode is supported at present. We may need to
3661 support Thumb-2 mode also at some point. */
3662 if (span_type
!= 'a')
3665 for (i
= span_start
; i
< span_end
;)
3667 unsigned int next_i
= i
+ 4;
3668 unsigned int insn
= bfd_big_endian (abfd
)
3669 ? (contents
[i
] << 24)
3670 | (contents
[i
+ 1] << 16)
3671 | (contents
[i
+ 2] << 8)
3673 : (contents
[i
+ 3] << 24)
3674 | (contents
[i
+ 2] << 16)
3675 | (contents
[i
+ 1] << 8)
3677 unsigned int writemask
= 0;
3678 enum bfd_arm_vfp11_pipe pipe
;
3683 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
, regs
,
3685 /* I'm assuming the VFP11 erratum can trigger with denorm
3686 operands on either the FMAC or the DS pipeline. This might
3687 lead to slightly overenthusiastic veneer insertion. */
3688 if (pipe
== VFP11_FMAC
|| pipe
== VFP11_DS
)
3690 state
= use_vector
? 1 : 2;
3692 veneer_of_insn
= insn
;
3698 int other_regs
[3], other_numregs
;
3699 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
3702 if (pipe
!= VFP11_BAD
3703 && bfd_arm_vfp11_antidependency (writemask
, regs
,
3713 int other_regs
[3], other_numregs
;
3714 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
3717 if (pipe
!= VFP11_BAD
3718 && bfd_arm_vfp11_antidependency (writemask
, regs
,
3724 next_i
= first_fmac
+ 4;
3730 abort (); /* Should be unreachable. */
3735 elf32_vfp11_erratum_list
*newerr
3736 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
3739 errcount
= ++(elf32_arm_section_data (sec
)->erratumcount
);
3741 newerr
->u
.b
.vfp_insn
= veneer_of_insn
;
3746 newerr
->type
= VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
;
3753 record_vfp11_erratum_veneer (link_info
, newerr
, abfd
, sec
,
3758 newerr
->next
= sec_data
->erratumlist
;
3759 sec_data
->erratumlist
= newerr
;
3768 if (contents
!= NULL
3769 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3777 if (contents
!= NULL
3778 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3784 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
3785 after sections have been laid out, using specially-named symbols. */
3788 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd
*abfd
,
3789 struct bfd_link_info
*link_info
)
3792 struct elf32_arm_link_hash_table
*globals
;
3795 if (link_info
->relocatable
)
3798 globals
= elf32_arm_hash_table (link_info
);
3800 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
3801 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
3803 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3805 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
3806 elf32_vfp11_erratum_list
*errnode
= sec_data
->erratumlist
;
3808 for (; errnode
!= NULL
; errnode
= errnode
->next
)
3810 struct elf_link_hash_entry
*myh
;
3813 switch (errnode
->type
)
3815 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
3816 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
:
3817 /* Find veneer symbol. */
3818 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
3819 errnode
->u
.b
.veneer
->u
.v
.id
);
3821 myh
= elf_link_hash_lookup
3822 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3825 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
3826 "`%s'"), abfd
, tmp_name
);
3828 vma
= myh
->root
.u
.def
.section
->output_section
->vma
3829 + myh
->root
.u
.def
.section
->output_offset
3830 + myh
->root
.u
.def
.value
;
3832 errnode
->u
.b
.veneer
->vma
= vma
;
3835 case VFP11_ERRATUM_ARM_VENEER
:
3836 case VFP11_ERRATUM_THUMB_VENEER
:
3837 /* Find return location. */
3838 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
3841 myh
= elf_link_hash_lookup
3842 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3845 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
3846 "`%s'"), abfd
, tmp_name
);
3848 vma
= myh
->root
.u
.def
.section
->output_section
->vma
3849 + myh
->root
.u
.def
.section
->output_offset
3850 + myh
->root
.u
.def
.value
;
3852 errnode
->u
.v
.branch
->vma
= vma
;
3865 /* Set target relocation values needed during linking. */
3868 bfd_elf32_arm_set_target_relocs (struct bfd
*output_bfd
,
3869 struct bfd_link_info
*link_info
,
3871 char * target2_type
,
3874 bfd_arm_vfp11_fix vfp11_fix
,
3875 int no_enum_warn
, int pic_veneer
)
3877 struct elf32_arm_link_hash_table
*globals
;
3879 globals
= elf32_arm_hash_table (link_info
);
3881 globals
->target1_is_rel
= target1_is_rel
;
3882 if (strcmp (target2_type
, "rel") == 0)
3883 globals
->target2_reloc
= R_ARM_REL32
;
3884 else if (strcmp (target2_type
, "abs") == 0)
3885 globals
->target2_reloc
= R_ARM_ABS32
;
3886 else if (strcmp (target2_type
, "got-rel") == 0)
3887 globals
->target2_reloc
= R_ARM_GOT_PREL
;
3890 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
3893 globals
->fix_v4bx
= fix_v4bx
;
3894 globals
->use_blx
|= use_blx
;
3895 globals
->vfp11_fix
= vfp11_fix
;
3896 globals
->pic_veneer
= pic_veneer
;
3898 elf32_arm_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
3901 /* The thumb form of a long branch is a bit finicky, because the offset
3902 encoding is split over two fields, each in it's own instruction. They
3903 can occur in any order. So given a thumb form of long branch, and an
3904 offset, insert the offset into the thumb branch and return finished
3907 It takes two thumb instructions to encode the target address. Each has
3908 11 bits to invest. The upper 11 bits are stored in one (identified by
3909 H-0.. see below), the lower 11 bits are stored in the other (identified
3912 Combine together and shifted left by 1 (it's a half word address) and
3916 H-0, upper address-0 = 000
3918 H-1, lower address-0 = 800
3920 They can be ordered either way, but the arm tools I've seen always put
3921 the lower one first. It probably doesn't matter. krk@cygnus.com
3923 XXX: Actually the order does matter. The second instruction (H-1)
3924 moves the computed address into the PC, so it must be the second one
3925 in the sequence. The problem, however is that whilst little endian code
3926 stores the instructions in HI then LOW order, big endian code does the
3927 reverse. nickc@cygnus.com. */
3929 #define LOW_HI_ORDER 0xF800F000
3930 #define HI_LOW_ORDER 0xF000F800
3933 insert_thumb_branch (insn32 br_insn
, int rel_off
)
3935 unsigned int low_bits
;
3936 unsigned int high_bits
;
3938 BFD_ASSERT ((rel_off
& 1) != 1);
3940 rel_off
>>= 1; /* Half word aligned address. */
3941 low_bits
= rel_off
& 0x000007FF; /* The bottom 11 bits. */
3942 high_bits
= (rel_off
>> 11) & 0x000007FF; /* The top 11 bits. */
3944 if ((br_insn
& LOW_HI_ORDER
) == LOW_HI_ORDER
)
3945 br_insn
= LOW_HI_ORDER
| (low_bits
<< 16) | high_bits
;
3946 else if ((br_insn
& HI_LOW_ORDER
) == HI_LOW_ORDER
)
3947 br_insn
= HI_LOW_ORDER
| (high_bits
<< 16) | low_bits
;
3949 /* FIXME: abort is probably not the right call. krk@cygnus.com */
3950 abort (); /* Error - not a valid branch instruction form. */
3956 /* Store an Arm insn into an output section not processed by
3957 elf32_arm_write_section. */
3960 put_arm_insn (struct elf32_arm_link_hash_table
*htab
,
3961 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3963 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3964 bfd_putl32 (val
, ptr
);
3966 bfd_putb32 (val
, ptr
);
3970 /* Store a 16-bit Thumb insn into an output section not processed by
3971 elf32_arm_write_section. */
3974 put_thumb_insn (struct elf32_arm_link_hash_table
*htab
,
3975 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3977 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3978 bfd_putl16 (val
, ptr
);
3980 bfd_putb16 (val
, ptr
);
3984 /* Thumb code calling an ARM function. */
3987 elf32_thumb_to_arm_stub (struct bfd_link_info
* info
,
3991 asection
* input_section
,
3992 bfd_byte
* hit_data
,
3995 bfd_signed_vma addend
,
3997 char **error_message
)
4001 unsigned long int tmp
;
4002 long int ret_offset
;
4003 struct elf_link_hash_entry
* myh
;
4004 struct elf32_arm_link_hash_table
* globals
;
4006 myh
= find_thumb_glue (info
, name
, error_message
);
4010 globals
= elf32_arm_hash_table (info
);
4012 BFD_ASSERT (globals
!= NULL
);
4013 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4015 my_offset
= myh
->root
.u
.def
.value
;
4017 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4018 THUMB2ARM_GLUE_SECTION_NAME
);
4020 BFD_ASSERT (s
!= NULL
);
4021 BFD_ASSERT (s
->contents
!= NULL
);
4022 BFD_ASSERT (s
->output_section
!= NULL
);
4024 if ((my_offset
& 0x01) == 0x01)
4027 && sym_sec
->owner
!= NULL
4028 && !INTERWORK_FLAG (sym_sec
->owner
))
4030 (*_bfd_error_handler
)
4031 (_("%B(%s): warning: interworking not enabled.\n"
4032 " first occurrence: %B: thumb call to arm"),
4033 sym_sec
->owner
, input_bfd
, name
);
4039 myh
->root
.u
.def
.value
= my_offset
;
4041 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a1_bx_pc_insn
,
4042 s
->contents
+ my_offset
);
4044 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a2_noop_insn
,
4045 s
->contents
+ my_offset
+ 2);
4048 /* Address of destination of the stub. */
4049 ((bfd_signed_vma
) val
)
4051 /* Offset from the start of the current section
4052 to the start of the stubs. */
4054 /* Offset of the start of this stub from the start of the stubs. */
4056 /* Address of the start of the current section. */
4057 + s
->output_section
->vma
)
4058 /* The branch instruction is 4 bytes into the stub. */
4060 /* ARM branches work from the pc of the instruction + 8. */
4063 put_arm_insn (globals
, output_bfd
,
4064 (bfd_vma
) t2a3_b_insn
| ((ret_offset
>> 2) & 0x00FFFFFF),
4065 s
->contents
+ my_offset
+ 4);
4068 BFD_ASSERT (my_offset
<= globals
->thumb_glue_size
);
4070 /* Now go back and fix up the original BL insn to point to here. */
4072 /* Address of where the stub is located. */
4073 (s
->output_section
->vma
+ s
->output_offset
+ my_offset
)
4074 /* Address of where the BL is located. */
4075 - (input_section
->output_section
->vma
+ input_section
->output_offset
4077 /* Addend in the relocation. */
4079 /* Biassing for PC-relative addressing. */
4082 tmp
= bfd_get_32 (input_bfd
, hit_data
4083 - input_section
->vma
);
4085 bfd_put_32 (output_bfd
,
4086 (bfd_vma
) insert_thumb_branch (tmp
, ret_offset
),
4087 hit_data
- input_section
->vma
);
4092 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
4094 static struct elf_link_hash_entry
*
4095 elf32_arm_create_thumb_stub (struct bfd_link_info
* info
,
4102 char **error_message
)
4105 long int ret_offset
;
4106 struct elf_link_hash_entry
* myh
;
4107 struct elf32_arm_link_hash_table
* globals
;
4109 myh
= find_arm_glue (info
, name
, error_message
);
4113 globals
= elf32_arm_hash_table (info
);
4115 BFD_ASSERT (globals
!= NULL
);
4116 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4118 my_offset
= myh
->root
.u
.def
.value
;
4120 if ((my_offset
& 0x01) == 0x01)
4123 && sym_sec
->owner
!= NULL
4124 && !INTERWORK_FLAG (sym_sec
->owner
))
4126 (*_bfd_error_handler
)
4127 (_("%B(%s): warning: interworking not enabled.\n"
4128 " first occurrence: %B: arm call to thumb"),
4129 sym_sec
->owner
, input_bfd
, name
);
4133 myh
->root
.u
.def
.value
= my_offset
;
4135 if (info
->shared
|| globals
->root
.is_relocatable_executable
4136 || globals
->pic_veneer
)
4138 /* For relocatable objects we can't use absolute addresses,
4139 so construct the address from a relative offset. */
4140 /* TODO: If the offset is small it's probably worth
4141 constructing the address with adds. */
4142 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1p_ldr_insn
,
4143 s
->contents
+ my_offset
);
4144 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2p_add_pc_insn
,
4145 s
->contents
+ my_offset
+ 4);
4146 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t3p_bx_r12_insn
,
4147 s
->contents
+ my_offset
+ 8);
4148 /* Adjust the offset by 4 for the position of the add,
4149 and 8 for the pipeline offset. */
4150 ret_offset
= (val
- (s
->output_offset
4151 + s
->output_section
->vma
4154 bfd_put_32 (output_bfd
, ret_offset
,
4155 s
->contents
+ my_offset
+ 12);
4159 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1_ldr_insn
,
4160 s
->contents
+ my_offset
);
4162 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2_bx_r12_insn
,
4163 s
->contents
+ my_offset
+ 4);
4165 /* It's a thumb address. Add the low order bit. */
4166 bfd_put_32 (output_bfd
, val
| a2t3_func_addr_insn
,
4167 s
->contents
+ my_offset
+ 8);
4171 BFD_ASSERT (my_offset
<= globals
->arm_glue_size
);
4176 /* Arm code calling a Thumb function. */
4179 elf32_arm_to_thumb_stub (struct bfd_link_info
* info
,
4183 asection
* input_section
,
4184 bfd_byte
* hit_data
,
4187 bfd_signed_vma addend
,
4189 char **error_message
)
4191 unsigned long int tmp
;
4194 long int ret_offset
;
4195 struct elf_link_hash_entry
* myh
;
4196 struct elf32_arm_link_hash_table
* globals
;
4198 globals
= elf32_arm_hash_table (info
);
4200 BFD_ASSERT (globals
!= NULL
);
4201 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4203 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
4204 ARM2THUMB_GLUE_SECTION_NAME
);
4205 BFD_ASSERT (s
!= NULL
);
4206 BFD_ASSERT (s
->contents
!= NULL
);
4207 BFD_ASSERT (s
->output_section
!= NULL
);
4209 myh
= elf32_arm_create_thumb_stub (info
, name
, input_bfd
, output_bfd
,
4210 sym_sec
, val
, s
, error_message
);
4214 my_offset
= myh
->root
.u
.def
.value
;
4215 tmp
= bfd_get_32 (input_bfd
, hit_data
);
4216 tmp
= tmp
& 0xFF000000;
4218 /* Somehow these are both 4 too far, so subtract 8. */
4219 ret_offset
= (s
->output_offset
4221 + s
->output_section
->vma
4222 - (input_section
->output_offset
4223 + input_section
->output_section
->vma
4227 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
4229 bfd_put_32 (output_bfd
, (bfd_vma
) tmp
, hit_data
- input_section
->vma
);
4234 /* Populate Arm stub for an exported Thumb function. */
4237 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry
*h
, void * inf
)
4239 struct bfd_link_info
* info
= (struct bfd_link_info
*) inf
;
4241 struct elf_link_hash_entry
* myh
;
4242 struct elf32_arm_link_hash_entry
*eh
;
4243 struct elf32_arm_link_hash_table
* globals
;
4246 char *error_message
;
4248 eh
= elf32_arm_hash_entry(h
);
4249 /* Allocate stubs for exported Thumb functions on v4t. */
4250 if (eh
->export_glue
== NULL
)
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 sec
= eh
->export_glue
->root
.u
.def
.section
;
4266 BFD_ASSERT (sec
->output_section
!= NULL
);
4268 val
= eh
->export_glue
->root
.u
.def
.value
+ sec
->output_offset
4269 + sec
->output_section
->vma
;
4270 myh
= elf32_arm_create_thumb_stub (info
, h
->root
.root
.string
,
4271 h
->root
.u
.def
.section
->owner
,
4272 globals
->obfd
, sec
, val
, s
,
4278 /* Generate Arm stubs for exported Thumb symbols. */
4280 elf32_arm_begin_write_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
4281 struct bfd_link_info
*link_info
)
4283 struct elf32_arm_link_hash_table
* globals
;
4288 globals
= elf32_arm_hash_table (link_info
);
4289 /* If blx is available then exported Thumb symbols are OK and there is
4291 if (globals
->use_blx
)
4294 elf_link_hash_traverse (&globals
->root
, elf32_arm_to_thumb_export_stub
,
4298 /* Some relocations map to different relocations depending on the
4299 target. Return the real relocation. */
4301 arm_real_reloc_type (struct elf32_arm_link_hash_table
* globals
,
4307 if (globals
->target1_is_rel
)
4313 return globals
->target2_reloc
;
4320 /* Return the base VMA address which should be subtracted from real addresses
4321 when resolving @dtpoff relocation.
4322 This is PT_TLS segment p_vaddr. */
4325 dtpoff_base (struct bfd_link_info
*info
)
4327 /* If tls_sec is NULL, we should have signalled an error already. */
4328 if (elf_hash_table (info
)->tls_sec
== NULL
)
4330 return elf_hash_table (info
)->tls_sec
->vma
;
4333 /* Return the relocation value for @tpoff relocation
4334 if STT_TLS virtual address is ADDRESS. */
4337 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
4339 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4342 /* If tls_sec is NULL, we should have signalled an error already. */
4343 if (htab
->tls_sec
== NULL
)
4345 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
4346 return address
- htab
->tls_sec
->vma
+ base
;
4349 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
4350 VALUE is the relocation value. */
4352 static bfd_reloc_status_type
4353 elf32_arm_abs12_reloc (bfd
*abfd
, void *data
, bfd_vma value
)
4356 return bfd_reloc_overflow
;
4358 value
|= bfd_get_32 (abfd
, data
) & 0xfffff000;
4359 bfd_put_32 (abfd
, value
, data
);
4360 return bfd_reloc_ok
;
4363 /* For a given value of n, calculate the value of G_n as required to
4364 deal with group relocations. We return it in the form of an
4365 encoded constant-and-rotation, together with the final residual. If n is
4366 specified as less than zero, then final_residual is filled with the
4367 input value and no further action is performed. */
4370 calculate_group_reloc_mask (bfd_vma value
, int n
, bfd_vma
*final_residual
)
4374 bfd_vma encoded_g_n
= 0;
4375 bfd_vma residual
= value
; /* Also known as Y_n. */
4377 for (current_n
= 0; current_n
<= n
; current_n
++)
4381 /* Calculate which part of the value to mask. */
4388 /* Determine the most significant bit in the residual and
4389 align the resulting value to a 2-bit boundary. */
4390 for (msb
= 30; msb
>= 0; msb
-= 2)
4391 if (residual
& (3 << msb
))
4394 /* The desired shift is now (msb - 6), or zero, whichever
4401 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
4402 g_n
= residual
& (0xff << shift
);
4403 encoded_g_n
= (g_n
>> shift
)
4404 | ((g_n
<= 0xff ? 0 : (32 - shift
) / 2) << 8);
4406 /* Calculate the residual for the next time around. */
4410 *final_residual
= residual
;
4415 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
4416 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
4418 identify_add_or_sub(bfd_vma insn
)
4420 int opcode
= insn
& 0x1e00000;
4422 if (opcode
== 1 << 23) /* ADD */
4425 if (opcode
== 1 << 22) /* SUB */
4431 /* Determine if we're dealing with a Thumb-2 object. */
4433 static int using_thumb2 (struct elf32_arm_link_hash_table
*globals
)
4435 int arch
= elf32_arm_get_eabi_attr_int (globals
->obfd
, Tag_CPU_arch
);
4436 return arch
== TAG_CPU_ARCH_V6T2
|| arch
>= TAG_CPU_ARCH_V7
;
4439 /* Perform a relocation as part of a final link. */
4441 static bfd_reloc_status_type
4442 elf32_arm_final_link_relocate (reloc_howto_type
* howto
,
4445 asection
* input_section
,
4446 bfd_byte
* contents
,
4447 Elf_Internal_Rela
* rel
,
4449 struct bfd_link_info
* info
,
4451 const char * sym_name
,
4453 struct elf_link_hash_entry
* h
,
4454 bfd_boolean
* unresolved_reloc_p
,
4455 char **error_message
)
4457 unsigned long r_type
= howto
->type
;
4458 unsigned long r_symndx
;
4459 bfd_byte
* hit_data
= contents
+ rel
->r_offset
;
4460 bfd
* dynobj
= NULL
;
4461 Elf_Internal_Shdr
* symtab_hdr
;
4462 struct elf_link_hash_entry
** sym_hashes
;
4463 bfd_vma
* local_got_offsets
;
4464 asection
* sgot
= NULL
;
4465 asection
* splt
= NULL
;
4466 asection
* sreloc
= NULL
;
4468 bfd_signed_vma signed_addend
;
4469 struct elf32_arm_link_hash_table
* globals
;
4471 globals
= elf32_arm_hash_table (info
);
4473 /* Some relocation type map to different relocations depending on the
4474 target. We pick the right one here. */
4475 r_type
= arm_real_reloc_type (globals
, r_type
);
4476 if (r_type
!= howto
->type
)
4477 howto
= elf32_arm_howto_from_type (r_type
);
4479 /* If the start address has been set, then set the EF_ARM_HASENTRY
4480 flag. Setting this more than once is redundant, but the cost is
4481 not too high, and it keeps the code simple.
4483 The test is done here, rather than somewhere else, because the
4484 start address is only set just before the final link commences.
4486 Note - if the user deliberately sets a start address of 0, the
4487 flag will not be set. */
4488 if (bfd_get_start_address (output_bfd
) != 0)
4489 elf_elfheader (output_bfd
)->e_flags
|= EF_ARM_HASENTRY
;
4491 dynobj
= elf_hash_table (info
)->dynobj
;
4494 sgot
= bfd_get_section_by_name (dynobj
, ".got");
4495 splt
= bfd_get_section_by_name (dynobj
, ".plt");
4497 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
4498 sym_hashes
= elf_sym_hashes (input_bfd
);
4499 local_got_offsets
= elf_local_got_offsets (input_bfd
);
4500 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4502 if (globals
->use_rel
)
4504 addend
= bfd_get_32 (input_bfd
, hit_data
) & howto
->src_mask
;
4506 if (addend
& ((howto
->src_mask
+ 1) >> 1))
4509 signed_addend
&= ~ howto
->src_mask
;
4510 signed_addend
|= addend
;
4513 signed_addend
= addend
;
4516 addend
= signed_addend
= rel
->r_addend
;
4521 /* We don't need to find a value for this symbol. It's just a
4523 *unresolved_reloc_p
= FALSE
;
4524 return bfd_reloc_ok
;
4527 if (!globals
->vxworks_p
)
4528 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
4532 case R_ARM_ABS32_NOI
:
4534 case R_ARM_REL32_NOI
:
4540 /* Handle relocations which should use the PLT entry. ABS32/REL32
4541 will use the symbol's value, which may point to a PLT entry, but we
4542 don't need to handle that here. If we created a PLT entry, all
4543 branches in this object should go to it. */
4544 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
4545 && r_type
!= R_ARM_ABS32_NOI
&& r_type
!= R_ARM_REL32_NOI
)
4548 && h
->plt
.offset
!= (bfd_vma
) -1)
4550 /* If we've created a .plt section, and assigned a PLT entry to
4551 this function, it should not be known to bind locally. If
4552 it were, we would have cleared the PLT entry. */
4553 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
4555 value
= (splt
->output_section
->vma
4556 + splt
->output_offset
4558 *unresolved_reloc_p
= FALSE
;
4559 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4560 contents
, rel
->r_offset
, value
,
4564 /* When generating a shared object or relocatable executable, these
4565 relocations are copied into the output file to be resolved at
4567 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
4568 && (input_section
->flags
& SEC_ALLOC
)
4569 && ((r_type
!= R_ARM_REL32
&& r_type
!= R_ARM_REL32_NOI
)
4570 || !SYMBOL_CALLS_LOCAL (info
, h
))
4572 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4573 || h
->root
.type
!= bfd_link_hash_undefweak
)
4574 && r_type
!= R_ARM_PC24
4575 && r_type
!= R_ARM_CALL
4576 && r_type
!= R_ARM_JUMP24
4577 && r_type
!= R_ARM_PREL31
4578 && r_type
!= R_ARM_PLT32
)
4580 Elf_Internal_Rela outrel
;
4582 bfd_boolean skip
, relocate
;
4584 *unresolved_reloc_p
= FALSE
;
4590 name
= (bfd_elf_string_from_elf_section
4592 elf_elfheader (input_bfd
)->e_shstrndx
,
4593 elf_section_data (input_section
)->rel_hdr
.sh_name
));
4595 return bfd_reloc_notsupported
;
4597 BFD_ASSERT (reloc_section_p (globals
, name
, input_section
));
4599 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4600 BFD_ASSERT (sreloc
!= NULL
);
4606 outrel
.r_addend
= addend
;
4608 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
4610 if (outrel
.r_offset
== (bfd_vma
) -1)
4612 else if (outrel
.r_offset
== (bfd_vma
) -2)
4613 skip
= TRUE
, relocate
= TRUE
;
4614 outrel
.r_offset
+= (input_section
->output_section
->vma
4615 + input_section
->output_offset
);
4618 memset (&outrel
, 0, sizeof outrel
);
4623 || !h
->def_regular
))
4624 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
4629 /* This symbol is local, or marked to become local. */
4630 if (sym_flags
== STT_ARM_TFUNC
)
4632 if (globals
->symbian_p
)
4636 /* On Symbian OS, the data segment and text segement
4637 can be relocated independently. Therefore, we
4638 must indicate the segment to which this
4639 relocation is relative. The BPABI allows us to
4640 use any symbol in the right segment; we just use
4641 the section symbol as it is convenient. (We
4642 cannot use the symbol given by "h" directly as it
4643 will not appear in the dynamic symbol table.)
4645 Note that the dynamic linker ignores the section
4646 symbol value, so we don't subtract osec->vma
4647 from the emitted reloc addend. */
4649 osec
= sym_sec
->output_section
;
4651 osec
= input_section
->output_section
;
4652 symbol
= elf_section_data (osec
)->dynindx
;
4655 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4657 if ((osec
->flags
& SEC_READONLY
) == 0
4658 && htab
->data_index_section
!= NULL
)
4659 osec
= htab
->data_index_section
;
4661 osec
= htab
->text_index_section
;
4662 symbol
= elf_section_data (osec
)->dynindx
;
4664 BFD_ASSERT (symbol
!= 0);
4667 /* On SVR4-ish systems, the dynamic loader cannot
4668 relocate the text and data segments independently,
4669 so the symbol does not matter. */
4671 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
4672 if (globals
->use_rel
)
4675 outrel
.r_addend
+= value
;
4678 loc
= sreloc
->contents
;
4679 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
4680 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
4682 /* If this reloc is against an external symbol, we do not want to
4683 fiddle with the addend. Otherwise, we need to include the symbol
4684 value so that it becomes an addend for the dynamic reloc. */
4686 return bfd_reloc_ok
;
4688 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4689 contents
, rel
->r_offset
, value
,
4692 else switch (r_type
)
4695 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
4697 case R_ARM_XPC25
: /* Arm BLX instruction. */
4700 case R_ARM_PC24
: /* Arm B/BL instruction */
4702 if (r_type
== R_ARM_XPC25
)
4704 /* Check for Arm calling Arm function. */
4705 /* FIXME: Should we translate the instruction into a BL
4706 instruction instead ? */
4707 if (sym_flags
!= STT_ARM_TFUNC
)
4708 (*_bfd_error_handler
)
4709 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
4711 h
? h
->root
.root
.string
: "(local)");
4713 else if (r_type
!= R_ARM_CALL
|| !globals
->use_blx
)
4715 /* Check for Arm calling Thumb function. */
4716 if (sym_flags
== STT_ARM_TFUNC
)
4718 if (elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
4719 output_bfd
, input_section
,
4720 hit_data
, sym_sec
, rel
->r_offset
,
4721 signed_addend
, value
,
4723 return bfd_reloc_ok
;
4725 return bfd_reloc_dangerous
;
4729 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
4731 S is the address of the symbol in the relocation.
4732 P is address of the instruction being relocated.
4733 A is the addend (extracted from the instruction) in bytes.
4735 S is held in 'value'.
4736 P is the base address of the section containing the
4737 instruction plus the offset of the reloc into that
4739 (input_section->output_section->vma +
4740 input_section->output_offset +
4742 A is the addend, converted into bytes, ie:
4745 Note: None of these operations have knowledge of the pipeline
4746 size of the processor, thus it is up to the assembler to
4747 encode this information into the addend. */
4748 value
-= (input_section
->output_section
->vma
4749 + input_section
->output_offset
);
4750 value
-= rel
->r_offset
;
4751 if (globals
->use_rel
)
4752 value
+= (signed_addend
<< howto
->size
);
4754 /* RELA addends do not have to be adjusted by howto->size. */
4755 value
+= signed_addend
;
4757 signed_addend
= value
;
4758 signed_addend
>>= howto
->rightshift
;
4760 /* It is not an error for an undefined weak reference to be
4761 out of range. Any program that branches to such a symbol
4762 is going to crash anyway, so there is no point worrying
4763 about getting the destination exactly right. */
4764 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
4766 /* Perform a signed range check. */
4767 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
4768 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
4769 return bfd_reloc_overflow
;
4772 addend
= (value
& 2);
4774 value
= (signed_addend
& howto
->dst_mask
)
4775 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
4777 /* Set the H bit in the BLX instruction. */
4778 if (sym_flags
== STT_ARM_TFUNC
)
4783 value
&= ~(bfd_vma
)(1 << 24);
4785 if (r_type
== R_ARM_CALL
)
4787 /* Select the correct instruction (BL or BLX). */
4788 if (sym_flags
== STT_ARM_TFUNC
)
4792 value
&= ~(bfd_vma
)(1 << 28);
4800 if (sym_flags
== STT_ARM_TFUNC
)
4804 case R_ARM_ABS32_NOI
:
4810 if (sym_flags
== STT_ARM_TFUNC
)
4812 value
-= (input_section
->output_section
->vma
4813 + input_section
->output_offset
+ rel
->r_offset
);
4816 case R_ARM_REL32_NOI
:
4818 value
-= (input_section
->output_section
->vma
4819 + input_section
->output_offset
+ rel
->r_offset
);
4823 value
-= (input_section
->output_section
->vma
4824 + input_section
->output_offset
+ rel
->r_offset
);
4825 value
+= signed_addend
;
4826 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
4828 /* Check for overflow */
4829 if ((value
^ (value
>> 1)) & (1 << 30))
4830 return bfd_reloc_overflow
;
4832 value
&= 0x7fffffff;
4833 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
4834 if (sym_flags
== STT_ARM_TFUNC
)
4839 bfd_put_32 (input_bfd
, value
, hit_data
);
4840 return bfd_reloc_ok
;
4844 if ((long) value
> 0x7f || (long) value
< -0x80)
4845 return bfd_reloc_overflow
;
4847 bfd_put_8 (input_bfd
, value
, hit_data
);
4848 return bfd_reloc_ok
;
4853 if ((long) value
> 0x7fff || (long) value
< -0x8000)
4854 return bfd_reloc_overflow
;
4856 bfd_put_16 (input_bfd
, value
, hit_data
);
4857 return bfd_reloc_ok
;
4859 case R_ARM_THM_ABS5
:
4860 /* Support ldr and str instructions for the thumb. */
4861 if (globals
->use_rel
)
4863 /* Need to refetch addend. */
4864 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
4865 /* ??? Need to determine shift amount from operand size. */
4866 addend
>>= howto
->rightshift
;
4870 /* ??? Isn't value unsigned? */
4871 if ((long) value
> 0x1f || (long) value
< -0x10)
4872 return bfd_reloc_overflow
;
4874 /* ??? Value needs to be properly shifted into place first. */
4875 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
4876 bfd_put_16 (input_bfd
, value
, hit_data
);
4877 return bfd_reloc_ok
;
4879 case R_ARM_THM_ALU_PREL_11_0
:
4880 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
4883 bfd_signed_vma relocation
;
4885 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
4886 | bfd_get_16 (input_bfd
, hit_data
+ 2);
4888 if (globals
->use_rel
)
4890 signed_addend
= (insn
& 0xff) | ((insn
& 0x7000) >> 4)
4891 | ((insn
& (1 << 26)) >> 15);
4892 if (insn
& 0xf00000)
4893 signed_addend
= -signed_addend
;
4896 relocation
= value
+ signed_addend
;
4897 relocation
-= (input_section
->output_section
->vma
4898 + input_section
->output_offset
4901 value
= abs (relocation
);
4903 if (value
>= 0x1000)
4904 return bfd_reloc_overflow
;
4906 insn
= (insn
& 0xfb0f8f00) | (value
& 0xff)
4907 | ((value
& 0x700) << 4)
4908 | ((value
& 0x800) << 15);
4912 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4913 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4915 return bfd_reloc_ok
;
4918 case R_ARM_THM_PC12
:
4919 /* Corresponds to: ldr.w reg, [pc, #offset]. */
4922 bfd_signed_vma relocation
;
4924 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
4925 | bfd_get_16 (input_bfd
, hit_data
+ 2);
4927 if (globals
->use_rel
)
4929 signed_addend
= insn
& 0xfff;
4930 if (!(insn
& (1 << 23)))
4931 signed_addend
= -signed_addend
;
4934 relocation
= value
+ signed_addend
;
4935 relocation
-= (input_section
->output_section
->vma
4936 + input_section
->output_offset
4939 value
= abs (relocation
);
4941 if (value
>= 0x1000)
4942 return bfd_reloc_overflow
;
4944 insn
= (insn
& 0xff7ff000) | value
;
4945 if (relocation
>= 0)
4948 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
4949 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
4951 return bfd_reloc_ok
;
4954 case R_ARM_THM_XPC22
:
4955 case R_ARM_THM_CALL
:
4956 /* Thumb BL (branch long instruction). */
4960 bfd_boolean overflow
= FALSE
;
4961 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
4962 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
4963 bfd_signed_vma reloc_signed_max
;
4964 bfd_signed_vma reloc_signed_min
;
4966 bfd_signed_vma signed_check
;
4968 int thumb2
= using_thumb2 (globals
);
4970 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
4971 with Thumb-1) involving the J1 and J2 bits. */
4972 if (globals
->use_rel
)
4974 bfd_vma s
= (upper_insn
& (1 << 10)) >> 10;
4975 bfd_vma upper
= upper_insn
& 0x3ff;
4976 bfd_vma lower
= lower_insn
& 0x7ff;
4977 bfd_vma j1
= (lower_insn
& (1 << 13)) >> 13;
4978 bfd_vma j2
= (lower_insn
& (1 << 11)) >> 11;
4979 bfd_vma i1
= j1
^ s
? 0 : 1;
4980 bfd_vma i2
= j2
^ s
? 0 : 1;
4982 addend
= (i1
<< 23) | (i2
<< 22) | (upper
<< 12) | (lower
<< 1);
4984 addend
= (addend
| ((s
? 0 : 1) << 24)) - (1 << 24);
4986 signed_addend
= addend
;
4989 if (r_type
== R_ARM_THM_XPC22
)
4991 /* Check for Thumb to Thumb call. */
4992 /* FIXME: Should we translate the instruction into a BL
4993 instruction instead ? */
4994 if (sym_flags
== STT_ARM_TFUNC
)
4995 (*_bfd_error_handler
)
4996 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
4998 h
? h
->root
.root
.string
: "(local)");
5002 /* If it is not a call to Thumb, assume call to Arm.
5003 If it is a call relative to a section name, then it is not a
5004 function call at all, but rather a long jump. Calls through
5005 the PLT do not require stubs. */
5006 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
5007 && (h
== NULL
|| splt
== NULL
5008 || h
->plt
.offset
== (bfd_vma
) -1))
5010 if (globals
->use_blx
)
5012 /* Convert BL to BLX. */
5013 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
5015 else if (elf32_thumb_to_arm_stub
5016 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
5017 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
,
5019 return bfd_reloc_ok
;
5021 return bfd_reloc_dangerous
;
5023 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
)
5025 /* Make sure this is a BL. */
5026 lower_insn
|= 0x1800;
5030 /* Handle calls via the PLT. */
5031 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
5033 value
= (splt
->output_section
->vma
5034 + splt
->output_offset
5036 if (globals
->use_blx
)
5038 /* If the Thumb BLX instruction is available, convert the
5039 BL to a BLX instruction to call the ARM-mode PLT entry. */
5040 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
5043 /* Target the Thumb stub before the ARM PLT entry. */
5044 value
-= PLT_THUMB_STUB_SIZE
;
5045 *unresolved_reloc_p
= FALSE
;
5048 relocation
= value
+ signed_addend
;
5050 relocation
-= (input_section
->output_section
->vma
5051 + input_section
->output_offset
5054 check
= relocation
>> howto
->rightshift
;
5056 /* If this is a signed value, the rightshift just dropped
5057 leading 1 bits (assuming twos complement). */
5058 if ((bfd_signed_vma
) relocation
>= 0)
5059 signed_check
= check
;
5061 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
5063 /* Calculate the permissable maximum and minimum values for
5064 this relocation according to whether we're relocating for
5066 bitsize
= howto
->bitsize
;
5069 reloc_signed_max
= ((1 << (bitsize
- 1)) - 1) >> howto
->rightshift
;
5070 reloc_signed_min
= ~reloc_signed_max
;
5072 /* Assumes two's complement. */
5073 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5076 if ((lower_insn
& 0x1800) == 0x0800)
5077 /* For a BLX instruction, make sure that the relocation is rounded up
5078 to a word boundary. This follows the semantics of the instruction
5079 which specifies that bit 1 of the target address will come from bit
5080 1 of the base address. */
5081 relocation
= (relocation
+ 2) & ~ 3;
5083 /* Put RELOCATION back into the insn. Assumes two's complement.
5084 We use the Thumb-2 encoding, which is safe even if dealing with
5085 a Thumb-1 instruction by virtue of our overflow check above. */
5086 reloc_sign
= (signed_check
< 0) ? 1 : 0;
5087 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff)
5088 | ((relocation
>> 12) & 0x3ff)
5089 | (reloc_sign
<< 10);
5090 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x2fff)
5091 | (((!((relocation
>> 23) & 1)) ^ reloc_sign
) << 13)
5092 | (((!((relocation
>> 22) & 1)) ^ reloc_sign
) << 11)
5093 | ((relocation
>> 1) & 0x7ff);
5095 /* Put the relocated value back in the object file: */
5096 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5097 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5099 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5103 case R_ARM_THM_JUMP24
:
5104 /* Thumb32 unconditional branch instruction. */
5107 bfd_boolean overflow
= FALSE
;
5108 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
5109 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
5110 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
5111 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
5113 bfd_signed_vma signed_check
;
5115 /* Need to refetch the addend, reconstruct the top three bits, and glue the
5116 two pieces together. */
5117 if (globals
->use_rel
)
5119 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
5120 bfd_vma hi
= (upper_insn
& 0x03ff);
5121 bfd_vma I1
= (lower_insn
& 0x2000) >> 13;
5122 bfd_vma I2
= (lower_insn
& 0x0800) >> 11;
5123 bfd_vma lo
= (lower_insn
& 0x07ff);
5129 signed_addend
= (S
<< 24) | (I1
<< 23) | (I2
<< 22) | (hi
<< 12) | (lo
<< 1);
5130 signed_addend
-= (1 << 24); /* Sign extend. */
5133 /* ??? Should handle interworking? GCC might someday try to
5134 use this for tail calls. */
5136 relocation
= value
+ signed_addend
;
5137 relocation
-= (input_section
->output_section
->vma
5138 + input_section
->output_offset
5141 check
= relocation
>> howto
->rightshift
;
5143 /* If this is a signed value, the rightshift just dropped
5144 leading 1 bits (assuming twos complement). */
5145 if ((bfd_signed_vma
) relocation
>= 0)
5146 signed_check
= check
;
5148 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
5150 /* Assumes two's complement. */
5151 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5154 /* Put RELOCATION back into the insn. */
5156 bfd_vma S
= (relocation
& 0x01000000) >> 24;
5157 bfd_vma I1
= (relocation
& 0x00800000) >> 23;
5158 bfd_vma I2
= (relocation
& 0x00400000) >> 22;
5159 bfd_vma hi
= (relocation
& 0x003ff000) >> 12;
5160 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
5165 upper_insn
= (upper_insn
& (bfd_vma
) 0xf800) | (S
<< 10) | hi
;
5166 lower_insn
= (lower_insn
& (bfd_vma
) 0xd000) | (I1
<< 13) | (I2
<< 11) | lo
;
5169 /* Put the relocated value back in the object file: */
5170 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5171 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5173 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5176 case R_ARM_THM_JUMP19
:
5177 /* Thumb32 conditional branch instruction. */
5180 bfd_boolean overflow
= FALSE
;
5181 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
5182 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
5183 bfd_signed_vma reloc_signed_max
= ((1 << (howto
->bitsize
- 1)) - 1) >> howto
->rightshift
;
5184 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
5186 bfd_signed_vma signed_check
;
5188 /* Need to refetch the addend, reconstruct the top three bits,
5189 and squish the two 11 bit pieces together. */
5190 if (globals
->use_rel
)
5192 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
5193 bfd_vma upper
= (upper_insn
& 0x001f);
5194 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
5195 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
5196 bfd_vma lower
= (lower_insn
& 0x07ff);
5201 upper
-= 0x0100; /* Sign extend. */
5203 addend
= (upper
<< 12) | (lower
<< 1);
5204 signed_addend
= addend
;
5207 /* ??? Should handle interworking? GCC might someday try to
5208 use this for tail calls. */
5210 relocation
= value
+ signed_addend
;
5211 relocation
-= (input_section
->output_section
->vma
5212 + input_section
->output_offset
5215 check
= relocation
>> howto
->rightshift
;
5217 /* If this is a signed value, the rightshift just dropped
5218 leading 1 bits (assuming twos complement). */
5219 if ((bfd_signed_vma
) relocation
>= 0)
5220 signed_check
= check
;
5222 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
5224 /* Assumes two's complement. */
5225 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5228 /* Put RELOCATION back into the insn. */
5230 bfd_vma S
= (relocation
& 0x00100000) >> 20;
5231 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
5232 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
5233 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
5234 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
5236 upper_insn
= (upper_insn
& 0xfb30) | (S
<< 10) | hi
;
5237 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
5240 /* Put the relocated value back in the object file: */
5241 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
5242 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
5244 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
5247 case R_ARM_THM_JUMP11
:
5248 case R_ARM_THM_JUMP8
:
5249 case R_ARM_THM_JUMP6
:
5250 /* Thumb B (branch) instruction). */
5252 bfd_signed_vma relocation
;
5253 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
5254 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
5255 bfd_signed_vma signed_check
;
5257 /* CZB cannot jump backward. */
5258 if (r_type
== R_ARM_THM_JUMP6
)
5259 reloc_signed_min
= 0;
5261 if (globals
->use_rel
)
5263 /* Need to refetch addend. */
5264 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
5265 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5268 signed_addend
&= ~ howto
->src_mask
;
5269 signed_addend
|= addend
;
5272 signed_addend
= addend
;
5273 /* The value in the insn has been right shifted. We need to
5274 undo this, so that we can perform the address calculation
5275 in terms of bytes. */
5276 signed_addend
<<= howto
->rightshift
;
5278 relocation
= value
+ signed_addend
;
5280 relocation
-= (input_section
->output_section
->vma
5281 + input_section
->output_offset
5284 relocation
>>= howto
->rightshift
;
5285 signed_check
= relocation
;
5287 if (r_type
== R_ARM_THM_JUMP6
)
5288 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
5290 relocation
&= howto
->dst_mask
;
5291 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
5293 bfd_put_16 (input_bfd
, relocation
, hit_data
);
5295 /* Assumes two's complement. */
5296 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
5297 return bfd_reloc_overflow
;
5299 return bfd_reloc_ok
;
5302 case R_ARM_ALU_PCREL7_0
:
5303 case R_ARM_ALU_PCREL15_8
:
5304 case R_ARM_ALU_PCREL23_15
:
5309 insn
= bfd_get_32 (input_bfd
, hit_data
);
5310 if (globals
->use_rel
)
5312 /* Extract the addend. */
5313 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
5314 signed_addend
= addend
;
5316 relocation
= value
+ signed_addend
;
5318 relocation
-= (input_section
->output_section
->vma
5319 + input_section
->output_offset
5321 insn
= (insn
& ~0xfff)
5322 | ((howto
->bitpos
<< 7) & 0xf00)
5323 | ((relocation
>> howto
->bitpos
) & 0xff);
5324 bfd_put_32 (input_bfd
, value
, hit_data
);
5326 return bfd_reloc_ok
;
5328 case R_ARM_GNU_VTINHERIT
:
5329 case R_ARM_GNU_VTENTRY
:
5330 return bfd_reloc_ok
;
5332 case R_ARM_GOTOFF32
:
5333 /* Relocation is relative to the start of the
5334 global offset table. */
5336 BFD_ASSERT (sgot
!= NULL
);
5338 return bfd_reloc_notsupported
;
5340 /* If we are addressing a Thumb function, we need to adjust the
5341 address by one, so that attempts to call the function pointer will
5342 correctly interpret it as Thumb code. */
5343 if (sym_flags
== STT_ARM_TFUNC
)
5346 /* Note that sgot->output_offset is not involved in this
5347 calculation. We always want the start of .got. If we
5348 define _GLOBAL_OFFSET_TABLE in a different way, as is
5349 permitted by the ABI, we might have to change this
5351 value
-= sgot
->output_section
->vma
;
5352 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5353 contents
, rel
->r_offset
, value
,
5357 /* Use global offset table as symbol value. */
5358 BFD_ASSERT (sgot
!= NULL
);
5361 return bfd_reloc_notsupported
;
5363 *unresolved_reloc_p
= FALSE
;
5364 value
= sgot
->output_section
->vma
;
5365 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5366 contents
, rel
->r_offset
, value
,
5370 case R_ARM_GOT_PREL
:
5371 /* Relocation is to the entry for this symbol in the
5372 global offset table. */
5374 return bfd_reloc_notsupported
;
5381 off
= h
->got
.offset
;
5382 BFD_ASSERT (off
!= (bfd_vma
) -1);
5383 dyn
= globals
->root
.dynamic_sections_created
;
5385 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
5387 && SYMBOL_REFERENCES_LOCAL (info
, h
))
5388 || (ELF_ST_VISIBILITY (h
->other
)
5389 && h
->root
.type
== bfd_link_hash_undefweak
))
5391 /* This is actually a static link, or it is a -Bsymbolic link
5392 and the symbol is defined locally. We must initialize this
5393 entry in the global offset table. Since the offset must
5394 always be a multiple of 4, we use the least significant bit
5395 to record whether we have initialized it already.
5397 When doing a dynamic link, we create a .rel(a).got relocation
5398 entry to initialize the value. This is done in the
5399 finish_dynamic_symbol routine. */
5404 /* If we are addressing a Thumb function, we need to
5405 adjust the address by one, so that attempts to
5406 call the function pointer will correctly
5407 interpret it as Thumb code. */
5408 if (sym_flags
== STT_ARM_TFUNC
)
5411 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
5416 *unresolved_reloc_p
= FALSE
;
5418 value
= sgot
->output_offset
+ off
;
5424 BFD_ASSERT (local_got_offsets
!= NULL
&&
5425 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
5427 off
= local_got_offsets
[r_symndx
];
5429 /* The offset must always be a multiple of 4. We use the
5430 least significant bit to record whether we have already
5431 generated the necessary reloc. */
5436 /* If we are addressing a Thumb function, we need to
5437 adjust the address by one, so that attempts to
5438 call the function pointer will correctly
5439 interpret it as Thumb code. */
5440 if (sym_flags
== STT_ARM_TFUNC
)
5443 if (globals
->use_rel
)
5444 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
5449 Elf_Internal_Rela outrel
;
5452 srelgot
= (bfd_get_section_by_name
5453 (dynobj
, RELOC_SECTION (globals
, ".got")));
5454 BFD_ASSERT (srelgot
!= NULL
);
5456 outrel
.r_addend
= addend
+ value
;
5457 outrel
.r_offset
= (sgot
->output_section
->vma
5458 + sgot
->output_offset
5460 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
5461 loc
= srelgot
->contents
;
5462 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
5463 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5466 local_got_offsets
[r_symndx
] |= 1;
5469 value
= sgot
->output_offset
+ off
;
5471 if (r_type
!= R_ARM_GOT32
)
5472 value
+= sgot
->output_section
->vma
;
5474 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5475 contents
, rel
->r_offset
, value
,
5478 case R_ARM_TLS_LDO32
:
5479 value
= value
- dtpoff_base (info
);
5481 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5482 contents
, rel
->r_offset
, value
,
5485 case R_ARM_TLS_LDM32
:
5489 if (globals
->sgot
== NULL
)
5492 off
= globals
->tls_ldm_got
.offset
;
5498 /* If we don't know the module number, create a relocation
5502 Elf_Internal_Rela outrel
;
5505 if (globals
->srelgot
== NULL
)
5508 outrel
.r_addend
= 0;
5509 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5510 + globals
->sgot
->output_offset
+ off
);
5511 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
5513 if (globals
->use_rel
)
5514 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5515 globals
->sgot
->contents
+ off
);
5517 loc
= globals
->srelgot
->contents
;
5518 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
5519 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5522 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
5524 globals
->tls_ldm_got
.offset
|= 1;
5527 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
5528 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
5530 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5531 contents
, rel
->r_offset
, value
,
5535 case R_ARM_TLS_GD32
:
5536 case R_ARM_TLS_IE32
:
5542 if (globals
->sgot
== NULL
)
5549 dyn
= globals
->root
.dynamic_sections_created
;
5550 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
5552 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
5554 *unresolved_reloc_p
= FALSE
;
5557 off
= h
->got
.offset
;
5558 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
5562 if (local_got_offsets
== NULL
)
5564 off
= local_got_offsets
[r_symndx
];
5565 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
5568 if (tls_type
== GOT_UNKNOWN
)
5575 bfd_boolean need_relocs
= FALSE
;
5576 Elf_Internal_Rela outrel
;
5577 bfd_byte
*loc
= NULL
;
5580 /* The GOT entries have not been initialized yet. Do it
5581 now, and emit any relocations. If both an IE GOT and a
5582 GD GOT are necessary, we emit the GD first. */
5584 if ((info
->shared
|| indx
!= 0)
5586 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5587 || h
->root
.type
!= bfd_link_hash_undefweak
))
5590 if (globals
->srelgot
== NULL
)
5592 loc
= globals
->srelgot
->contents
;
5593 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
5596 if (tls_type
& GOT_TLS_GD
)
5600 outrel
.r_addend
= 0;
5601 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5602 + globals
->sgot
->output_offset
5604 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
5606 if (globals
->use_rel
)
5607 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5608 globals
->sgot
->contents
+ cur_off
);
5610 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5611 globals
->srelgot
->reloc_count
++;
5612 loc
+= RELOC_SIZE (globals
);
5615 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
5616 globals
->sgot
->contents
+ cur_off
+ 4);
5619 outrel
.r_addend
= 0;
5620 outrel
.r_info
= ELF32_R_INFO (indx
,
5621 R_ARM_TLS_DTPOFF32
);
5622 outrel
.r_offset
+= 4;
5624 if (globals
->use_rel
)
5625 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5626 globals
->sgot
->contents
+ cur_off
+ 4);
5629 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5630 globals
->srelgot
->reloc_count
++;
5631 loc
+= RELOC_SIZE (globals
);
5636 /* If we are not emitting relocations for a
5637 general dynamic reference, then we must be in a
5638 static link or an executable link with the
5639 symbol binding locally. Mark it as belonging
5640 to module 1, the executable. */
5641 bfd_put_32 (output_bfd
, 1,
5642 globals
->sgot
->contents
+ cur_off
);
5643 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
5644 globals
->sgot
->contents
+ cur_off
+ 4);
5650 if (tls_type
& GOT_TLS_IE
)
5655 outrel
.r_addend
= value
- dtpoff_base (info
);
5657 outrel
.r_addend
= 0;
5658 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
5659 + globals
->sgot
->output_offset
5661 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
5663 if (globals
->use_rel
)
5664 bfd_put_32 (output_bfd
, outrel
.r_addend
,
5665 globals
->sgot
->contents
+ cur_off
);
5667 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5668 globals
->srelgot
->reloc_count
++;
5669 loc
+= RELOC_SIZE (globals
);
5672 bfd_put_32 (output_bfd
, tpoff (info
, value
),
5673 globals
->sgot
->contents
+ cur_off
);
5680 local_got_offsets
[r_symndx
] |= 1;
5683 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
5685 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
5686 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
5688 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5689 contents
, rel
->r_offset
, value
,
5693 case R_ARM_TLS_LE32
:
5696 (*_bfd_error_handler
)
5697 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
5698 input_bfd
, input_section
,
5699 (long) rel
->r_offset
, howto
->name
);
5703 value
= tpoff (info
, value
);
5705 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5706 contents
, rel
->r_offset
, value
,
5710 if (globals
->fix_v4bx
)
5712 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5714 /* Ensure that we have a BX instruction. */
5715 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
5717 /* Preserve Rm (lowest four bits) and the condition code
5718 (highest four bits). Other bits encode MOV PC,Rm. */
5719 insn
= (insn
& 0xf000000f) | 0x01a0f000;
5721 bfd_put_32 (input_bfd
, insn
, hit_data
);
5723 return bfd_reloc_ok
;
5725 case R_ARM_MOVW_ABS_NC
:
5726 case R_ARM_MOVT_ABS
:
5727 case R_ARM_MOVW_PREL_NC
:
5728 case R_ARM_MOVT_PREL
:
5729 /* Until we properly support segment-base-relative addressing then
5730 we assume the segment base to be zero, as for the group relocations.
5731 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
5732 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
5733 case R_ARM_MOVW_BREL_NC
:
5734 case R_ARM_MOVW_BREL
:
5735 case R_ARM_MOVT_BREL
:
5737 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5739 if (globals
->use_rel
)
5741 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
5742 signed_addend
= (addend
^ 0x10000) - 0x10000;
5745 value
+= signed_addend
;
5747 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
5748 value
-= (input_section
->output_section
->vma
5749 + input_section
->output_offset
+ rel
->r_offset
);
5751 if (r_type
== R_ARM_MOVW_BREL
&& value
>= 0x10000)
5752 return bfd_reloc_overflow
;
5754 if (sym_flags
== STT_ARM_TFUNC
)
5757 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
5758 || r_type
== R_ARM_MOVT_BREL
)
5762 insn
|= value
& 0xfff;
5763 insn
|= (value
& 0xf000) << 4;
5764 bfd_put_32 (input_bfd
, insn
, hit_data
);
5766 return bfd_reloc_ok
;
5768 case R_ARM_THM_MOVW_ABS_NC
:
5769 case R_ARM_THM_MOVT_ABS
:
5770 case R_ARM_THM_MOVW_PREL_NC
:
5771 case R_ARM_THM_MOVT_PREL
:
5772 /* Until we properly support segment-base-relative addressing then
5773 we assume the segment base to be zero, as for the above relocations.
5774 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
5775 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
5776 as R_ARM_THM_MOVT_ABS. */
5777 case R_ARM_THM_MOVW_BREL_NC
:
5778 case R_ARM_THM_MOVW_BREL
:
5779 case R_ARM_THM_MOVT_BREL
:
5783 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
5784 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
5786 if (globals
->use_rel
)
5788 addend
= ((insn
>> 4) & 0xf000)
5789 | ((insn
>> 15) & 0x0800)
5790 | ((insn
>> 4) & 0x0700)
5792 signed_addend
= (addend
^ 0x10000) - 0x10000;
5795 value
+= signed_addend
;
5797 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
5798 value
-= (input_section
->output_section
->vma
5799 + input_section
->output_offset
+ rel
->r_offset
);
5801 if (r_type
== R_ARM_THM_MOVW_BREL
&& value
>= 0x10000)
5802 return bfd_reloc_overflow
;
5804 if (sym_flags
== STT_ARM_TFUNC
)
5807 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
5808 || r_type
== R_ARM_THM_MOVT_BREL
)
5812 insn
|= (value
& 0xf000) << 4;
5813 insn
|= (value
& 0x0800) << 15;
5814 insn
|= (value
& 0x0700) << 4;
5815 insn
|= (value
& 0x00ff);
5817 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
5818 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
5820 return bfd_reloc_ok
;
5822 case R_ARM_ALU_PC_G0_NC
:
5823 case R_ARM_ALU_PC_G1_NC
:
5824 case R_ARM_ALU_PC_G0
:
5825 case R_ARM_ALU_PC_G1
:
5826 case R_ARM_ALU_PC_G2
:
5827 case R_ARM_ALU_SB_G0_NC
:
5828 case R_ARM_ALU_SB_G1_NC
:
5829 case R_ARM_ALU_SB_G0
:
5830 case R_ARM_ALU_SB_G1
:
5831 case R_ARM_ALU_SB_G2
:
5833 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5834 bfd_vma pc
= input_section
->output_section
->vma
5835 + input_section
->output_offset
+ rel
->r_offset
;
5836 /* sb should be the origin of the *segment* containing the symbol.
5837 It is not clear how to obtain this OS-dependent value, so we
5838 make an arbitrary choice of zero. */
5842 bfd_signed_vma signed_value
;
5845 /* Determine which group of bits to select. */
5848 case R_ARM_ALU_PC_G0_NC
:
5849 case R_ARM_ALU_PC_G0
:
5850 case R_ARM_ALU_SB_G0_NC
:
5851 case R_ARM_ALU_SB_G0
:
5855 case R_ARM_ALU_PC_G1_NC
:
5856 case R_ARM_ALU_PC_G1
:
5857 case R_ARM_ALU_SB_G1_NC
:
5858 case R_ARM_ALU_SB_G1
:
5862 case R_ARM_ALU_PC_G2
:
5863 case R_ARM_ALU_SB_G2
:
5871 /* If REL, extract the addend from the insn. If RELA, it will
5872 have already been fetched for us. */
5873 if (globals
->use_rel
)
5876 bfd_vma constant
= insn
& 0xff;
5877 bfd_vma rotation
= (insn
& 0xf00) >> 8;
5880 signed_addend
= constant
;
5883 /* Compensate for the fact that in the instruction, the
5884 rotation is stored in multiples of 2 bits. */
5887 /* Rotate "constant" right by "rotation" bits. */
5888 signed_addend
= (constant
>> rotation
) |
5889 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
5892 /* Determine if the instruction is an ADD or a SUB.
5893 (For REL, this determines the sign of the addend.) */
5894 negative
= identify_add_or_sub (insn
);
5897 (*_bfd_error_handler
)
5898 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
5899 input_bfd
, input_section
,
5900 (long) rel
->r_offset
, howto
->name
);
5901 return bfd_reloc_overflow
;
5904 signed_addend
*= negative
;
5907 /* Compute the value (X) to go in the place. */
5908 if (r_type
== R_ARM_ALU_PC_G0_NC
5909 || r_type
== R_ARM_ALU_PC_G1_NC
5910 || r_type
== R_ARM_ALU_PC_G0
5911 || r_type
== R_ARM_ALU_PC_G1
5912 || r_type
== R_ARM_ALU_PC_G2
)
5914 signed_value
= value
- pc
+ signed_addend
;
5916 /* Section base relative. */
5917 signed_value
= value
- sb
+ signed_addend
;
5919 /* If the target symbol is a Thumb function, then set the
5920 Thumb bit in the address. */
5921 if (sym_flags
== STT_ARM_TFUNC
)
5924 /* Calculate the value of the relevant G_n, in encoded
5925 constant-with-rotation format. */
5926 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
5929 /* Check for overflow if required. */
5930 if ((r_type
== R_ARM_ALU_PC_G0
5931 || r_type
== R_ARM_ALU_PC_G1
5932 || r_type
== R_ARM_ALU_PC_G2
5933 || r_type
== R_ARM_ALU_SB_G0
5934 || r_type
== R_ARM_ALU_SB_G1
5935 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
5937 (*_bfd_error_handler
)
5938 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5939 input_bfd
, input_section
,
5940 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
5941 return bfd_reloc_overflow
;
5944 /* Mask out the value and the ADD/SUB part of the opcode; take care
5945 not to destroy the S bit. */
5948 /* Set the opcode according to whether the value to go in the
5949 place is negative. */
5950 if (signed_value
< 0)
5955 /* Encode the offset. */
5958 bfd_put_32 (input_bfd
, insn
, hit_data
);
5960 return bfd_reloc_ok
;
5962 case R_ARM_LDR_PC_G0
:
5963 case R_ARM_LDR_PC_G1
:
5964 case R_ARM_LDR_PC_G2
:
5965 case R_ARM_LDR_SB_G0
:
5966 case R_ARM_LDR_SB_G1
:
5967 case R_ARM_LDR_SB_G2
:
5969 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
5970 bfd_vma pc
= input_section
->output_section
->vma
5971 + input_section
->output_offset
+ rel
->r_offset
;
5972 bfd_vma sb
= 0; /* See note above. */
5974 bfd_signed_vma signed_value
;
5977 /* Determine which groups of bits to calculate. */
5980 case R_ARM_LDR_PC_G0
:
5981 case R_ARM_LDR_SB_G0
:
5985 case R_ARM_LDR_PC_G1
:
5986 case R_ARM_LDR_SB_G1
:
5990 case R_ARM_LDR_PC_G2
:
5991 case R_ARM_LDR_SB_G2
:
5999 /* If REL, extract the addend from the insn. If RELA, it will
6000 have already been fetched for us. */
6001 if (globals
->use_rel
)
6003 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6004 signed_addend
= negative
* (insn
& 0xfff);
6007 /* Compute the value (X) to go in the place. */
6008 if (r_type
== R_ARM_LDR_PC_G0
6009 || r_type
== R_ARM_LDR_PC_G1
6010 || r_type
== R_ARM_LDR_PC_G2
)
6012 signed_value
= value
- pc
+ signed_addend
;
6014 /* Section base relative. */
6015 signed_value
= value
- sb
+ signed_addend
;
6017 /* Calculate the value of the relevant G_{n-1} to obtain
6018 the residual at that stage. */
6019 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6021 /* Check for overflow. */
6022 if (residual
>= 0x1000)
6024 (*_bfd_error_handler
)
6025 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6026 input_bfd
, input_section
,
6027 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6028 return bfd_reloc_overflow
;
6031 /* Mask out the value and U bit. */
6034 /* Set the U bit if the value to go in the place is non-negative. */
6035 if (signed_value
>= 0)
6038 /* Encode the offset. */
6041 bfd_put_32 (input_bfd
, insn
, hit_data
);
6043 return bfd_reloc_ok
;
6045 case R_ARM_LDRS_PC_G0
:
6046 case R_ARM_LDRS_PC_G1
:
6047 case R_ARM_LDRS_PC_G2
:
6048 case R_ARM_LDRS_SB_G0
:
6049 case R_ARM_LDRS_SB_G1
:
6050 case R_ARM_LDRS_SB_G2
:
6052 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6053 bfd_vma pc
= input_section
->output_section
->vma
6054 + input_section
->output_offset
+ rel
->r_offset
;
6055 bfd_vma sb
= 0; /* See note above. */
6057 bfd_signed_vma signed_value
;
6060 /* Determine which groups of bits to calculate. */
6063 case R_ARM_LDRS_PC_G0
:
6064 case R_ARM_LDRS_SB_G0
:
6068 case R_ARM_LDRS_PC_G1
:
6069 case R_ARM_LDRS_SB_G1
:
6073 case R_ARM_LDRS_PC_G2
:
6074 case R_ARM_LDRS_SB_G2
:
6082 /* If REL, extract the addend from the insn. If RELA, it will
6083 have already been fetched for us. */
6084 if (globals
->use_rel
)
6086 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6087 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
6090 /* Compute the value (X) to go in the place. */
6091 if (r_type
== R_ARM_LDRS_PC_G0
6092 || r_type
== R_ARM_LDRS_PC_G1
6093 || r_type
== R_ARM_LDRS_PC_G2
)
6095 signed_value
= value
- pc
+ signed_addend
;
6097 /* Section base relative. */
6098 signed_value
= value
- sb
+ signed_addend
;
6100 /* Calculate the value of the relevant G_{n-1} to obtain
6101 the residual at that stage. */
6102 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6104 /* Check for overflow. */
6105 if (residual
>= 0x100)
6107 (*_bfd_error_handler
)
6108 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6109 input_bfd
, input_section
,
6110 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6111 return bfd_reloc_overflow
;
6114 /* Mask out the value and U bit. */
6117 /* Set the U bit if the value to go in the place is non-negative. */
6118 if (signed_value
>= 0)
6121 /* Encode the offset. */
6122 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
6124 bfd_put_32 (input_bfd
, insn
, hit_data
);
6126 return bfd_reloc_ok
;
6128 case R_ARM_LDC_PC_G0
:
6129 case R_ARM_LDC_PC_G1
:
6130 case R_ARM_LDC_PC_G2
:
6131 case R_ARM_LDC_SB_G0
:
6132 case R_ARM_LDC_SB_G1
:
6133 case R_ARM_LDC_SB_G2
:
6135 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
6136 bfd_vma pc
= input_section
->output_section
->vma
6137 + input_section
->output_offset
+ rel
->r_offset
;
6138 bfd_vma sb
= 0; /* See note above. */
6140 bfd_signed_vma signed_value
;
6143 /* Determine which groups of bits to calculate. */
6146 case R_ARM_LDC_PC_G0
:
6147 case R_ARM_LDC_SB_G0
:
6151 case R_ARM_LDC_PC_G1
:
6152 case R_ARM_LDC_SB_G1
:
6156 case R_ARM_LDC_PC_G2
:
6157 case R_ARM_LDC_SB_G2
:
6165 /* If REL, extract the addend from the insn. If RELA, it will
6166 have already been fetched for us. */
6167 if (globals
->use_rel
)
6169 int negative
= (insn
& (1 << 23)) ? 1 : -1;
6170 signed_addend
= negative
* ((insn
& 0xff) << 2);
6173 /* Compute the value (X) to go in the place. */
6174 if (r_type
== R_ARM_LDC_PC_G0
6175 || r_type
== R_ARM_LDC_PC_G1
6176 || r_type
== R_ARM_LDC_PC_G2
)
6178 signed_value
= value
- pc
+ signed_addend
;
6180 /* Section base relative. */
6181 signed_value
= value
- sb
+ signed_addend
;
6183 /* Calculate the value of the relevant G_{n-1} to obtain
6184 the residual at that stage. */
6185 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
6187 /* Check for overflow. (The absolute value to go in the place must be
6188 divisible by four and, after having been divided by four, must
6189 fit in eight bits.) */
6190 if ((residual
& 0x3) != 0 || residual
>= 0x400)
6192 (*_bfd_error_handler
)
6193 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6194 input_bfd
, input_section
,
6195 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
6196 return bfd_reloc_overflow
;
6199 /* Mask out the value and U bit. */
6202 /* Set the U bit if the value to go in the place is non-negative. */
6203 if (signed_value
>= 0)
6206 /* Encode the offset. */
6207 insn
|= residual
>> 2;
6209 bfd_put_32 (input_bfd
, insn
, hit_data
);
6211 return bfd_reloc_ok
;
6214 return bfd_reloc_notsupported
;
6220 uleb128_size (unsigned int i
)
6232 /* Return TRUE if the attribute has the default value (0/""). */
6234 is_default_attr (aeabi_attribute
*attr
)
6236 if ((attr
->type
& 1) && attr
->i
!= 0)
6238 if ((attr
->type
& 2) && attr
->s
&& *attr
->s
)
6244 /* Return the size of a single attribute. */
6246 eabi_attr_size(int tag
, aeabi_attribute
*attr
)
6250 if (is_default_attr (attr
))
6253 size
= uleb128_size (tag
);
6255 size
+= uleb128_size (attr
->i
);
6257 size
+= strlen ((char *)attr
->s
) + 1;
6261 /* Returns the size of the eabi object attributess section. */
6263 elf32_arm_eabi_attr_size (bfd
*abfd
)
6266 aeabi_attribute
*attr
;
6267 aeabi_attribute_list
*list
;
6270 attr
= elf32_arm_tdata (abfd
)->known_eabi_attributes
;
6271 size
= 16; /* 'A' <size> "aeabi" 0x1 <size>. */
6272 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
6273 size
+= eabi_attr_size (i
, &attr
[i
]);
6275 for (list
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
6278 size
+= eabi_attr_size (list
->tag
, &list
->attr
);
6284 write_uleb128 (bfd_byte
*p
, unsigned int val
)
6299 /* Write attribute ATTR to butter P, and return a pointer to the following
6302 write_eabi_attribute (bfd_byte
*p
, int tag
, aeabi_attribute
*attr
)
6304 /* Suppress default entries. */
6305 if (is_default_attr(attr
))
6308 p
= write_uleb128 (p
, tag
);
6310 p
= write_uleb128 (p
, attr
->i
);
6315 len
= strlen (attr
->s
) + 1;
6316 memcpy (p
, attr
->s
, len
);
6323 /* Write the contents of the eabi attributes section to p. */
6325 elf32_arm_set_eabi_attr_contents (bfd
*abfd
, bfd_byte
*contents
, bfd_vma size
)
6328 aeabi_attribute
*attr
;
6329 aeabi_attribute_list
*list
;
6334 bfd_put_32 (abfd
, size
- 1, p
);
6336 memcpy (p
, "aeabi", 6);
6339 bfd_put_32 (abfd
, size
- 11, p
);
6342 attr
= elf32_arm_tdata (abfd
)->known_eabi_attributes
;
6343 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
6344 p
= write_eabi_attribute (p
, i
, &attr
[i
]);
6346 for (list
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
6349 p
= write_eabi_attribute (p
, list
->tag
, &list
->attr
);
6352 /* Override final_link to handle EABI object attribute sections. */
6355 elf32_arm_bfd_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
6358 struct bfd_link_order
*p
;
6359 asection
*attr_section
= NULL
;
6363 /* elf32_arm_merge_private_bfd_data will already have merged the
6364 object attributes. Remove the input sections from the link, and set
6365 the contents of the output secton. */
6366 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6368 if (strcmp (o
->name
, ".ARM.attributes") == 0)
6370 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
6372 asection
*input_section
;
6374 if (p
->type
!= bfd_indirect_link_order
)
6376 input_section
= p
->u
.indirect
.section
;
6377 /* Hack: reset the SEC_HAS_CONTENTS flag so that
6378 elf_link_input_bfd ignores this section. */
6379 input_section
->flags
&= ~SEC_HAS_CONTENTS
;
6382 size
= elf32_arm_eabi_attr_size (abfd
);
6383 bfd_set_section_size (abfd
, o
, size
);
6385 /* Skip this section later on. */
6386 o
->map_head
.link_order
= NULL
;
6389 /* Invoke the ELF linker to do all the work. */
6390 if (!bfd_elf_final_link (abfd
, info
))
6395 contents
= bfd_malloc(size
);
6396 if (contents
== NULL
)
6398 elf32_arm_set_eabi_attr_contents (abfd
, contents
, size
);
6399 bfd_set_section_contents (abfd
, attr_section
, contents
, 0, size
);
6406 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
6408 arm_add_to_rel (bfd
* abfd
,
6410 reloc_howto_type
* howto
,
6411 bfd_signed_vma increment
)
6413 bfd_signed_vma addend
;
6415 if (howto
->type
== R_ARM_THM_CALL
)
6417 int upper_insn
, lower_insn
;
6420 upper_insn
= bfd_get_16 (abfd
, address
);
6421 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
6422 upper
= upper_insn
& 0x7ff;
6423 lower
= lower_insn
& 0x7ff;
6425 addend
= (upper
<< 12) | (lower
<< 1);
6426 addend
+= increment
;
6429 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
6430 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
6432 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
6433 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
6439 contents
= bfd_get_32 (abfd
, address
);
6441 /* Get the (signed) value from the instruction. */
6442 addend
= contents
& howto
->src_mask
;
6443 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6445 bfd_signed_vma mask
;
6448 mask
&= ~ howto
->src_mask
;
6452 /* Add in the increment, (which is a byte value). */
6453 switch (howto
->type
)
6456 addend
+= increment
;
6463 addend
<<= howto
->size
;
6464 addend
+= increment
;
6466 /* Should we check for overflow here ? */
6468 /* Drop any undesired bits. */
6469 addend
>>= howto
->rightshift
;
6473 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
6475 bfd_put_32 (abfd
, contents
, address
);
6479 #define IS_ARM_TLS_RELOC(R_TYPE) \
6480 ((R_TYPE) == R_ARM_TLS_GD32 \
6481 || (R_TYPE) == R_ARM_TLS_LDO32 \
6482 || (R_TYPE) == R_ARM_TLS_LDM32 \
6483 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
6484 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
6485 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
6486 || (R_TYPE) == R_ARM_TLS_LE32 \
6487 || (R_TYPE) == R_ARM_TLS_IE32)
6489 /* Relocate an ARM ELF section. */
6491 elf32_arm_relocate_section (bfd
* output_bfd
,
6492 struct bfd_link_info
* info
,
6494 asection
* input_section
,
6495 bfd_byte
* contents
,
6496 Elf_Internal_Rela
* relocs
,
6497 Elf_Internal_Sym
* local_syms
,
6498 asection
** local_sections
)
6500 Elf_Internal_Shdr
*symtab_hdr
;
6501 struct elf_link_hash_entry
**sym_hashes
;
6502 Elf_Internal_Rela
*rel
;
6503 Elf_Internal_Rela
*relend
;
6505 struct elf32_arm_link_hash_table
* globals
;
6507 globals
= elf32_arm_hash_table (info
);
6509 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
6510 sym_hashes
= elf_sym_hashes (input_bfd
);
6513 relend
= relocs
+ input_section
->reloc_count
;
6514 for (; rel
< relend
; rel
++)
6517 reloc_howto_type
* howto
;
6518 unsigned long r_symndx
;
6519 Elf_Internal_Sym
* sym
;
6521 struct elf_link_hash_entry
* h
;
6523 bfd_reloc_status_type r
;
6526 bfd_boolean unresolved_reloc
= FALSE
;
6527 char *error_message
= NULL
;
6529 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6530 r_type
= ELF32_R_TYPE (rel
->r_info
);
6531 r_type
= arm_real_reloc_type (globals
, r_type
);
6533 if ( r_type
== R_ARM_GNU_VTENTRY
6534 || r_type
== R_ARM_GNU_VTINHERIT
)
6537 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
6538 howto
= bfd_reloc
.howto
;
6544 if (r_symndx
< symtab_hdr
->sh_info
)
6546 sym
= local_syms
+ r_symndx
;
6547 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
6548 sec
= local_sections
[r_symndx
];
6549 if (globals
->use_rel
)
6551 relocation
= (sec
->output_section
->vma
6552 + sec
->output_offset
6554 if (!info
->relocatable
6555 && (sec
->flags
& SEC_MERGE
)
6556 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
6559 bfd_vma addend
, value
;
6561 if (howto
->rightshift
)
6563 (*_bfd_error_handler
)
6564 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
6565 input_bfd
, input_section
,
6566 (long) rel
->r_offset
, howto
->name
);
6570 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
6572 /* Get the (signed) value from the instruction. */
6573 addend
= value
& howto
->src_mask
;
6574 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6576 bfd_signed_vma mask
;
6579 mask
&= ~ howto
->src_mask
;
6584 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
6586 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
6587 value
= (value
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
6588 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
6592 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6598 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6599 r_symndx
, symtab_hdr
, sym_hashes
,
6601 unresolved_reloc
, warned
);
6606 if (sec
!= NULL
&& elf_discarded_section (sec
))
6608 /* For relocs against symbols from removed linkonce sections,
6609 or sections discarded by a linker script, we just want the
6610 section contents zeroed. Avoid any special processing. */
6611 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
6617 if (info
->relocatable
)
6619 /* This is a relocatable link. We don't have to change
6620 anything, unless the reloc is against a section symbol,
6621 in which case we have to adjust according to where the
6622 section symbol winds up in the output section. */
6623 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
6625 if (globals
->use_rel
)
6626 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
6627 howto
, (bfd_signed_vma
) sec
->output_offset
);
6629 rel
->r_addend
+= sec
->output_offset
;
6635 name
= h
->root
.root
.string
;
6638 name
= (bfd_elf_string_from_elf_section
6639 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
6640 if (name
== NULL
|| *name
== '\0')
6641 name
= bfd_section_name (input_bfd
, sec
);
6645 && r_type
!= R_ARM_NONE
6647 || h
->root
.type
== bfd_link_hash_defined
6648 || h
->root
.type
== bfd_link_hash_defweak
)
6649 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
6651 (*_bfd_error_handler
)
6652 ((sym_type
== STT_TLS
6653 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6654 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6657 (long) rel
->r_offset
,
6662 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
6663 input_section
, contents
, rel
,
6664 relocation
, info
, sec
, name
,
6665 (h
? ELF_ST_TYPE (h
->type
) :
6666 ELF_ST_TYPE (sym
->st_info
)), h
,
6667 &unresolved_reloc
, &error_message
);
6669 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6670 because such sections are not SEC_ALLOC and thus ld.so will
6671 not process them. */
6672 if (unresolved_reloc
6673 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
6676 (*_bfd_error_handler
)
6677 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6680 (long) rel
->r_offset
,
6682 h
->root
.root
.string
);
6686 if (r
!= bfd_reloc_ok
)
6690 case bfd_reloc_overflow
:
6691 /* If the overflowing reloc was to an undefined symbol,
6692 we have already printed one error message and there
6693 is no point complaining again. */
6695 h
->root
.type
!= bfd_link_hash_undefined
)
6696 && (!((*info
->callbacks
->reloc_overflow
)
6697 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
6698 (bfd_vma
) 0, input_bfd
, input_section
,
6703 case bfd_reloc_undefined
:
6704 if (!((*info
->callbacks
->undefined_symbol
)
6705 (info
, name
, input_bfd
, input_section
,
6706 rel
->r_offset
, TRUE
)))
6710 case bfd_reloc_outofrange
:
6711 error_message
= _("out of range");
6714 case bfd_reloc_notsupported
:
6715 error_message
= _("unsupported relocation");
6718 case bfd_reloc_dangerous
:
6719 /* error_message should already be set. */
6723 error_message
= _("unknown error");
6727 BFD_ASSERT (error_message
!= NULL
);
6728 if (!((*info
->callbacks
->reloc_dangerous
)
6729 (info
, error_message
, input_bfd
, input_section
,
6740 /* Allocate/find an object attribute. */
6741 static aeabi_attribute
*
6742 elf32_arm_new_eabi_attr (bfd
*abfd
, int tag
)
6744 aeabi_attribute
*attr
;
6745 aeabi_attribute_list
*list
;
6746 aeabi_attribute_list
*p
;
6747 aeabi_attribute_list
**lastp
;
6750 if (tag
< NUM_KNOWN_ATTRIBUTES
)
6752 /* Knwon tags are preallocated. */
6753 attr
= &elf32_arm_tdata (abfd
)->known_eabi_attributes
[tag
];
6757 /* Create a new tag. */
6758 list
= (aeabi_attribute_list
*)
6759 bfd_alloc (abfd
, sizeof (aeabi_attribute_list
));
6760 memset (list
, 0, sizeof (aeabi_attribute_list
));
6762 /* Keep the tag list in order. */
6763 lastp
= &elf32_arm_tdata (abfd
)->other_eabi_attributes
;
6764 for (p
= *lastp
; p
; p
= p
->next
)
6770 list
->next
= *lastp
;
6779 elf32_arm_get_eabi_attr_int (bfd
*abfd
, int tag
)
6781 aeabi_attribute_list
*p
;
6783 if (tag
< NUM_KNOWN_ATTRIBUTES
)
6785 /* Knwon tags are preallocated. */
6786 return elf32_arm_tdata (abfd
)->known_eabi_attributes
[tag
].i
;
6790 for (p
= elf32_arm_tdata (abfd
)->other_eabi_attributes
;
6804 elf32_arm_add_eabi_attr_int (bfd
*abfd
, int tag
, unsigned int i
)
6806 aeabi_attribute
*attr
;
6808 attr
= elf32_arm_new_eabi_attr (abfd
, tag
);
6814 attr_strdup (bfd
*abfd
, const char * s
)
6819 len
= strlen (s
) + 1;
6820 p
= (char *)bfd_alloc(abfd
, len
);
6821 return memcpy (p
, s
, len
);
6825 elf32_arm_add_eabi_attr_string (bfd
*abfd
, int tag
, const char *s
)
6827 aeabi_attribute
*attr
;
6829 attr
= elf32_arm_new_eabi_attr (abfd
, tag
);
6831 attr
->s
= attr_strdup (abfd
, s
);
6835 elf32_arm_add_eabi_attr_compat (bfd
*abfd
, unsigned int i
, const char *s
)
6837 aeabi_attribute_list
*list
;
6838 aeabi_attribute_list
*p
;
6839 aeabi_attribute_list
**lastp
;
6841 list
= (aeabi_attribute_list
*)
6842 bfd_alloc (abfd
, sizeof (aeabi_attribute_list
));
6843 memset (list
, 0, sizeof (aeabi_attribute_list
));
6844 list
->tag
= Tag_compatibility
;
6845 list
->attr
.type
= 3;
6847 list
->attr
.s
= attr_strdup (abfd
, s
);
6849 lastp
= &elf32_arm_tdata (abfd
)->other_eabi_attributes
;
6850 for (p
= *lastp
; p
; p
= p
->next
)
6853 if (p
->tag
!= Tag_compatibility
)
6855 cmp
= strcmp(s
, p
->attr
.s
);
6856 if (cmp
< 0 || (cmp
== 0 && i
< p
->attr
.i
))
6860 list
->next
= *lastp
;
6864 /* Set the right machine number. */
6867 elf32_arm_object_p (bfd
*abfd
)
6871 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
6873 if (mach
!= bfd_mach_arm_unknown
)
6874 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
6876 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
6877 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
6880 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
6885 /* Function to keep ARM specific flags in the ELF header. */
6888 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
6890 if (elf_flags_init (abfd
)
6891 && elf_elfheader (abfd
)->e_flags
!= flags
)
6893 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
6895 if (flags
& EF_ARM_INTERWORK
)
6896 (*_bfd_error_handler
)
6897 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
6901 (_("Warning: Clearing the interworking flag of %B due to outside request"),
6907 elf_elfheader (abfd
)->e_flags
= flags
;
6908 elf_flags_init (abfd
) = TRUE
;
6914 /* Copy the eabi object attribute from IBFD to OBFD. */
6916 copy_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
6918 aeabi_attribute
*in_attr
;
6919 aeabi_attribute
*out_attr
;
6920 aeabi_attribute_list
*list
;
6923 in_attr
= &elf32_arm_tdata (ibfd
)->known_eabi_attributes
[4];
6924 out_attr
= &elf32_arm_tdata (obfd
)->known_eabi_attributes
[4];
6925 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
6927 out_attr
->i
= in_attr
->i
;
6928 if (in_attr
->s
&& *in_attr
->s
)
6929 out_attr
->s
= attr_strdup (obfd
, in_attr
->s
);
6934 for (list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
6938 in_attr
= &list
->attr
;
6939 switch (in_attr
->type
)
6942 elf32_arm_add_eabi_attr_int (obfd
, list
->tag
, in_attr
->i
);
6945 elf32_arm_add_eabi_attr_string (obfd
, list
->tag
, in_attr
->s
);
6948 elf32_arm_add_eabi_attr_compat (obfd
, in_attr
->i
, in_attr
->s
);
6957 /* Copy backend specific data from one object module to another. */
6960 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
6965 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
6966 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
6969 in_flags
= elf_elfheader (ibfd
)->e_flags
;
6970 out_flags
= elf_elfheader (obfd
)->e_flags
;
6972 if (elf_flags_init (obfd
)
6973 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
6974 && in_flags
!= out_flags
)
6976 /* Cannot mix APCS26 and APCS32 code. */
6977 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
6980 /* Cannot mix float APCS and non-float APCS code. */
6981 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
6984 /* If the src and dest have different interworking flags
6985 then turn off the interworking bit. */
6986 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
6988 if (out_flags
& EF_ARM_INTERWORK
)
6990 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
6993 in_flags
&= ~EF_ARM_INTERWORK
;
6996 /* Likewise for PIC, though don't warn for this case. */
6997 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
6998 in_flags
&= ~EF_ARM_PIC
;
7001 elf_elfheader (obfd
)->e_flags
= in_flags
;
7002 elf_flags_init (obfd
) = TRUE
;
7004 /* Also copy the EI_OSABI field. */
7005 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
7006 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
7008 /* Copy EABI object attributes. */
7009 copy_eabi_attributes (ibfd
, obfd
);
7014 /* Values for Tag_ABI_PCS_R9_use. */
7023 /* Values for Tag_ABI_PCS_RW_data. */
7026 AEABI_PCS_RW_data_absolute
,
7027 AEABI_PCS_RW_data_PCrel
,
7028 AEABI_PCS_RW_data_SBrel
,
7029 AEABI_PCS_RW_data_unused
7032 /* Values for Tag_ABI_enum_size. */
7038 AEABI_enum_forced_wide
7041 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
7042 are conflicting attributes. */
7044 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
7046 aeabi_attribute
*in_attr
;
7047 aeabi_attribute
*out_attr
;
7048 aeabi_attribute_list
*in_list
;
7049 aeabi_attribute_list
*out_list
;
7050 /* Some tags have 0 = don't care, 1 = strong requirement,
7051 2 = weak requirement. */
7052 static const int order_312
[3] = {3, 1, 2};
7055 if (!elf32_arm_tdata (obfd
)->known_eabi_attributes
[0].i
)
7057 /* This is the first object. Copy the attributes. */
7058 copy_eabi_attributes (ibfd
, obfd
);
7060 /* Use the Tag_null value to indicate the attributes have been
7062 elf32_arm_tdata (obfd
)->known_eabi_attributes
[0].i
= 1;
7067 in_attr
= elf32_arm_tdata (ibfd
)->known_eabi_attributes
;
7068 out_attr
= elf32_arm_tdata (obfd
)->known_eabi_attributes
;
7069 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
7070 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
7072 /* Ignore mismatches if teh object doesn't use floating point. */
7073 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
7074 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
7075 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
7078 (_("ERROR: %B uses VFP register arguments, %B does not"),
7084 for (i
= 4; i
< NUM_KNOWN_ATTRIBUTES
; i
++)
7086 /* Merge this attribute with existing attributes. */
7089 case Tag_CPU_raw_name
:
7091 /* Use whichever has the greatest architecture requirements. We
7092 won't necessarily have both the above tags, so make sure input
7093 name is non-NULL. */
7094 if (in_attr
[Tag_CPU_arch
].i
> out_attr
[Tag_CPU_arch
].i
7096 out_attr
[i
].s
= attr_strdup(obfd
, in_attr
[i
].s
);
7099 case Tag_ABI_optimization_goals
:
7100 case Tag_ABI_FP_optimization_goals
:
7101 /* Use the first value seen. */
7105 case Tag_ARM_ISA_use
:
7106 case Tag_THUMB_ISA_use
:
7110 /* ??? Do NEON and WMMX conflict? */
7111 case Tag_ABI_FP_rounding
:
7112 case Tag_ABI_FP_denormal
:
7113 case Tag_ABI_FP_exceptions
:
7114 case Tag_ABI_FP_user_exceptions
:
7115 case Tag_ABI_FP_number_model
:
7116 case Tag_ABI_align8_preserved
:
7117 case Tag_ABI_HardFP_use
:
7118 /* Use the largest value specified. */
7119 if (in_attr
[i
].i
> out_attr
[i
].i
)
7120 out_attr
[i
].i
= in_attr
[i
].i
;
7123 case Tag_CPU_arch_profile
:
7124 /* Warn if conflicting architecture profiles used. */
7125 if (out_attr
[i
].i
&& in_attr
[i
].i
&& in_attr
[i
].i
!= out_attr
[i
].i
)
7128 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
7129 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
7133 out_attr
[i
].i
= in_attr
[i
].i
;
7135 case Tag_PCS_config
:
7136 if (out_attr
[i
].i
== 0)
7137 out_attr
[i
].i
= in_attr
[i
].i
;
7138 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
7140 /* It's sometimes ok to mix different configs, so this is only
7143 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
7146 case Tag_ABI_PCS_R9_use
:
7147 if (in_attr
[i
].i
!= out_attr
[i
].i
7148 && out_attr
[i
].i
!= AEABI_R9_unused
7149 && in_attr
[i
].i
!= AEABI_R9_unused
)
7152 (_("ERROR: %B: Conflicting use of R9"), ibfd
);
7155 if (out_attr
[i
].i
== AEABI_R9_unused
)
7156 out_attr
[i
].i
= in_attr
[i
].i
;
7158 case Tag_ABI_PCS_RW_data
:
7159 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
7160 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
7161 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
7164 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
7168 /* Use the smallest value specified. */
7169 if (in_attr
[i
].i
< out_attr
[i
].i
)
7170 out_attr
[i
].i
= in_attr
[i
].i
;
7172 case Tag_ABI_PCS_RO_data
:
7173 /* Use the smallest value specified. */
7174 if (in_attr
[i
].i
< out_attr
[i
].i
)
7175 out_attr
[i
].i
= in_attr
[i
].i
;
7177 case Tag_ABI_PCS_GOT_use
:
7178 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
7179 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
7180 out_attr
[i
].i
= in_attr
[i
].i
;
7182 case Tag_ABI_PCS_wchar_t
:
7183 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
)
7186 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd
);
7190 out_attr
[i
].i
= in_attr
[i
].i
;
7192 case Tag_ABI_align8_needed
:
7193 /* ??? Check against Tag_ABI_align8_preserved. */
7194 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
7195 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
7196 out_attr
[i
].i
= in_attr
[i
].i
;
7198 case Tag_ABI_enum_size
:
7199 if (in_attr
[i
].i
!= AEABI_enum_unused
)
7201 if (out_attr
[i
].i
== AEABI_enum_unused
7202 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
7204 /* The existing object is compatible with anything.
7205 Use whatever requirements the new object has. */
7206 out_attr
[i
].i
= in_attr
[i
].i
;
7208 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
7209 && out_attr
[i
].i
!= in_attr
[i
].i
7210 && !elf32_arm_tdata (obfd
)->no_enum_size_warning
)
7212 const char *aeabi_enum_names
[] =
7213 { "", "variable-size", "32-bit", "" };
7215 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
7216 ibfd
, aeabi_enum_names
[in_attr
[i
].i
],
7217 aeabi_enum_names
[out_attr
[i
].i
]);
7221 case Tag_ABI_VFP_args
:
7224 case Tag_ABI_WMMX_args
:
7225 if (in_attr
[i
].i
!= out_attr
[i
].i
)
7228 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
7233 default: /* All known attributes should be explicitly covered. */
7238 in_list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
7239 out_list
= elf32_arm_tdata (ibfd
)->other_eabi_attributes
;
7240 while (in_list
&& in_list
->tag
== Tag_compatibility
)
7242 in_attr
= &in_list
->attr
;
7243 if (in_attr
->i
== 0)
7245 if (in_attr
->i
== 1)
7248 (_("ERROR: %B: Must be processed by '%s' toolchain"),
7252 if (!out_list
|| out_list
->tag
!= Tag_compatibility
7253 || strcmp (in_attr
->s
, out_list
->attr
.s
) != 0)
7255 /* Add this compatibility tag to the output. */
7256 elf32_arm_add_eabi_attr_compat (obfd
, in_attr
->i
, in_attr
->s
);
7259 out_attr
= &out_list
->attr
;
7260 /* Check all the input tags with the same identifier. */
7263 if (out_list
->tag
!= Tag_compatibility
7264 || in_attr
->i
!= out_attr
->i
7265 || strcmp (in_attr
->s
, out_attr
->s
) != 0)
7268 (_("ERROR: %B: Incompatible object tag '%s':%d"),
7269 ibfd
, in_attr
->s
, in_attr
->i
);
7272 in_list
= in_list
->next
;
7273 if (in_list
->tag
!= Tag_compatibility
7274 || strcmp (in_attr
->s
, in_list
->attr
.s
) != 0)
7276 in_attr
= &in_list
->attr
;
7277 out_list
= out_list
->next
;
7279 out_attr
= &out_list
->attr
;
7282 /* Check the output doesn't have extra tags with this identifier. */
7283 if (out_list
&& out_list
->tag
== Tag_compatibility
7284 && strcmp (in_attr
->s
, out_list
->attr
.s
) == 0)
7287 (_("ERROR: %B: Incompatible object tag '%s':%d"),
7288 ibfd
, in_attr
->s
, out_list
->attr
.i
);
7293 for (; in_list
; in_list
= in_list
->next
)
7295 if ((in_list
->tag
& 128) < 64)
7298 (_("Warning: %B: Unknown EABI object attribute %d"),
7299 ibfd
, in_list
->tag
);
7307 /* Return TRUE if the two EABI versions are incompatible. */
7310 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
7312 /* v4 and v5 are the same spec before and after it was released,
7313 so allow mixing them. */
7314 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
7315 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
7318 return (iver
== over
);
7321 /* Merge backend specific data from an object file to the output
7322 object file when linking. */
7325 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
7329 bfd_boolean flags_compatible
= TRUE
;
7332 /* Check if we have the same endianess. */
7333 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
7336 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
7337 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
7340 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
7343 /* The input BFD must have had its flags initialised. */
7344 /* The following seems bogus to me -- The flags are initialized in
7345 the assembler but I don't think an elf_flags_init field is
7346 written into the object. */
7347 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7349 in_flags
= elf_elfheader (ibfd
)->e_flags
;
7350 out_flags
= elf_elfheader (obfd
)->e_flags
;
7352 if (!elf_flags_init (obfd
))
7354 /* If the input is the default architecture and had the default
7355 flags then do not bother setting the flags for the output
7356 architecture, instead allow future merges to do this. If no
7357 future merges ever set these flags then they will retain their
7358 uninitialised values, which surprise surprise, correspond
7359 to the default values. */
7360 if (bfd_get_arch_info (ibfd
)->the_default
7361 && elf_elfheader (ibfd
)->e_flags
== 0)
7364 elf_flags_init (obfd
) = TRUE
;
7365 elf_elfheader (obfd
)->e_flags
= in_flags
;
7367 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
7368 && bfd_get_arch_info (obfd
)->the_default
)
7369 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
7374 /* Determine what should happen if the input ARM architecture
7375 does not match the output ARM architecture. */
7376 if (! bfd_arm_merge_machines (ibfd
, obfd
))
7379 /* Identical flags must be compatible. */
7380 if (in_flags
== out_flags
)
7383 /* Check to see if the input BFD actually contains any sections. If
7384 not, its flags may not have been initialised either, but it
7385 cannot actually cause any incompatiblity. Do not short-circuit
7386 dynamic objects; their section list may be emptied by
7387 elf_link_add_object_symbols.
7389 Also check to see if there are no code sections in the input.
7390 In this case there is no need to check for code specific flags.
7391 XXX - do we need to worry about floating-point format compatability
7392 in data sections ? */
7393 if (!(ibfd
->flags
& DYNAMIC
))
7395 bfd_boolean null_input_bfd
= TRUE
;
7396 bfd_boolean only_data_sections
= TRUE
;
7398 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7400 /* Ignore synthetic glue sections. */
7401 if (strcmp (sec
->name
, ".glue_7")
7402 && strcmp (sec
->name
, ".glue_7t"))
7404 if ((bfd_get_section_flags (ibfd
, sec
)
7405 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7406 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7407 only_data_sections
= FALSE
;
7409 null_input_bfd
= FALSE
;
7414 if (null_input_bfd
|| only_data_sections
)
7418 /* Complain about various flag mismatches. */
7419 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
7420 EF_ARM_EABI_VERSION (out_flags
)))
7423 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
7425 (in_flags
& EF_ARM_EABIMASK
) >> 24,
7426 (out_flags
& EF_ARM_EABIMASK
) >> 24);
7430 /* Not sure what needs to be checked for EABI versions >= 1. */
7431 /* VxWorks libraries do not use these flags. */
7432 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
7433 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
7434 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
7436 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
7439 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
7441 in_flags
& EF_ARM_APCS_26
? 26 : 32,
7442 out_flags
& EF_ARM_APCS_26
? 26 : 32);
7443 flags_compatible
= FALSE
;
7446 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
7448 if (in_flags
& EF_ARM_APCS_FLOAT
)
7450 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
7454 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
7457 flags_compatible
= FALSE
;
7460 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
7462 if (in_flags
& EF_ARM_VFP_FLOAT
)
7464 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
7468 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
7471 flags_compatible
= FALSE
;
7474 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
7476 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
7478 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
7482 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
7485 flags_compatible
= FALSE
;
7488 #ifdef EF_ARM_SOFT_FLOAT
7489 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
7491 /* We can allow interworking between code that is VFP format
7492 layout, and uses either soft float or integer regs for
7493 passing floating point arguments and results. We already
7494 know that the APCS_FLOAT flags match; similarly for VFP
7496 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
7497 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
7499 if (in_flags
& EF_ARM_SOFT_FLOAT
)
7501 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
7505 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
7508 flags_compatible
= FALSE
;
7513 /* Interworking mismatch is only a warning. */
7514 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
7516 if (in_flags
& EF_ARM_INTERWORK
)
7519 (_("Warning: %B supports interworking, whereas %B does not"),
7525 (_("Warning: %B does not support interworking, whereas %B does"),
7531 return flags_compatible
;
7534 /* Display the flags field. */
7537 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
7539 FILE * file
= (FILE *) ptr
;
7540 unsigned long flags
;
7542 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
7544 /* Print normal ELF private data. */
7545 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
7547 flags
= elf_elfheader (abfd
)->e_flags
;
7548 /* Ignore init flag - it may not be set, despite the flags field
7549 containing valid data. */
7551 /* xgettext:c-format */
7552 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
7554 switch (EF_ARM_EABI_VERSION (flags
))
7556 case EF_ARM_EABI_UNKNOWN
:
7557 /* The following flag bits are GNU extensions and not part of the
7558 official ARM ELF extended ABI. Hence they are only decoded if
7559 the EABI version is not set. */
7560 if (flags
& EF_ARM_INTERWORK
)
7561 fprintf (file
, _(" [interworking enabled]"));
7563 if (flags
& EF_ARM_APCS_26
)
7564 fprintf (file
, " [APCS-26]");
7566 fprintf (file
, " [APCS-32]");
7568 if (flags
& EF_ARM_VFP_FLOAT
)
7569 fprintf (file
, _(" [VFP float format]"));
7570 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
7571 fprintf (file
, _(" [Maverick float format]"));
7573 fprintf (file
, _(" [FPA float format]"));
7575 if (flags
& EF_ARM_APCS_FLOAT
)
7576 fprintf (file
, _(" [floats passed in float registers]"));
7578 if (flags
& EF_ARM_PIC
)
7579 fprintf (file
, _(" [position independent]"));
7581 if (flags
& EF_ARM_NEW_ABI
)
7582 fprintf (file
, _(" [new ABI]"));
7584 if (flags
& EF_ARM_OLD_ABI
)
7585 fprintf (file
, _(" [old ABI]"));
7587 if (flags
& EF_ARM_SOFT_FLOAT
)
7588 fprintf (file
, _(" [software FP]"));
7590 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
7591 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
7592 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
7593 | EF_ARM_MAVERICK_FLOAT
);
7596 case EF_ARM_EABI_VER1
:
7597 fprintf (file
, _(" [Version1 EABI]"));
7599 if (flags
& EF_ARM_SYMSARESORTED
)
7600 fprintf (file
, _(" [sorted symbol table]"));
7602 fprintf (file
, _(" [unsorted symbol table]"));
7604 flags
&= ~ EF_ARM_SYMSARESORTED
;
7607 case EF_ARM_EABI_VER2
:
7608 fprintf (file
, _(" [Version2 EABI]"));
7610 if (flags
& EF_ARM_SYMSARESORTED
)
7611 fprintf (file
, _(" [sorted symbol table]"));
7613 fprintf (file
, _(" [unsorted symbol table]"));
7615 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
7616 fprintf (file
, _(" [dynamic symbols use segment index]"));
7618 if (flags
& EF_ARM_MAPSYMSFIRST
)
7619 fprintf (file
, _(" [mapping symbols precede others]"));
7621 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
7622 | EF_ARM_MAPSYMSFIRST
);
7625 case EF_ARM_EABI_VER3
:
7626 fprintf (file
, _(" [Version3 EABI]"));
7629 case EF_ARM_EABI_VER4
:
7630 fprintf (file
, _(" [Version4 EABI]"));
7633 case EF_ARM_EABI_VER5
:
7634 fprintf (file
, _(" [Version5 EABI]"));
7636 if (flags
& EF_ARM_BE8
)
7637 fprintf (file
, _(" [BE8]"));
7639 if (flags
& EF_ARM_LE8
)
7640 fprintf (file
, _(" [LE8]"));
7642 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
7646 fprintf (file
, _(" <EABI version unrecognised>"));
7650 flags
&= ~ EF_ARM_EABIMASK
;
7652 if (flags
& EF_ARM_RELEXEC
)
7653 fprintf (file
, _(" [relocatable executable]"));
7655 if (flags
& EF_ARM_HASENTRY
)
7656 fprintf (file
, _(" [has entry point]"));
7658 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
7661 fprintf (file
, _("<Unrecognised flag bits set>"));
7669 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
7671 switch (ELF_ST_TYPE (elf_sym
->st_info
))
7674 return ELF_ST_TYPE (elf_sym
->st_info
);
7677 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
7678 This allows us to distinguish between data used by Thumb instructions
7679 and non-data (which is probably code) inside Thumb regions of an
7681 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
7682 return ELF_ST_TYPE (elf_sym
->st_info
);
7693 elf32_arm_gc_mark_hook (asection
*sec
,
7694 struct bfd_link_info
*info
,
7695 Elf_Internal_Rela
*rel
,
7696 struct elf_link_hash_entry
*h
,
7697 Elf_Internal_Sym
*sym
)
7700 switch (ELF32_R_TYPE (rel
->r_info
))
7702 case R_ARM_GNU_VTINHERIT
:
7703 case R_ARM_GNU_VTENTRY
:
7707 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
7710 /* Update the got entry reference counts for the section being removed. */
7713 elf32_arm_gc_sweep_hook (bfd
* abfd
,
7714 struct bfd_link_info
* info
,
7716 const Elf_Internal_Rela
* relocs
)
7718 Elf_Internal_Shdr
*symtab_hdr
;
7719 struct elf_link_hash_entry
**sym_hashes
;
7720 bfd_signed_vma
*local_got_refcounts
;
7721 const Elf_Internal_Rela
*rel
, *relend
;
7722 struct elf32_arm_link_hash_table
* globals
;
7724 globals
= elf32_arm_hash_table (info
);
7726 elf_section_data (sec
)->local_dynrel
= NULL
;
7728 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
7729 sym_hashes
= elf_sym_hashes (abfd
);
7730 local_got_refcounts
= elf_local_got_refcounts (abfd
);
7732 relend
= relocs
+ sec
->reloc_count
;
7733 for (rel
= relocs
; rel
< relend
; rel
++)
7735 unsigned long r_symndx
;
7736 struct elf_link_hash_entry
*h
= NULL
;
7739 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7740 if (r_symndx
>= symtab_hdr
->sh_info
)
7742 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7743 while (h
->root
.type
== bfd_link_hash_indirect
7744 || h
->root
.type
== bfd_link_hash_warning
)
7745 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7748 r_type
= ELF32_R_TYPE (rel
->r_info
);
7749 r_type
= arm_real_reloc_type (globals
, r_type
);
7753 case R_ARM_GOT_PREL
:
7754 case R_ARM_TLS_GD32
:
7755 case R_ARM_TLS_IE32
:
7758 if (h
->got
.refcount
> 0)
7759 h
->got
.refcount
-= 1;
7761 else if (local_got_refcounts
!= NULL
)
7763 if (local_got_refcounts
[r_symndx
] > 0)
7764 local_got_refcounts
[r_symndx
] -= 1;
7768 case R_ARM_TLS_LDM32
:
7769 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
7773 case R_ARM_ABS32_NOI
:
7775 case R_ARM_REL32_NOI
:
7781 case R_ARM_THM_CALL
:
7782 case R_ARM_MOVW_ABS_NC
:
7783 case R_ARM_MOVT_ABS
:
7784 case R_ARM_MOVW_PREL_NC
:
7785 case R_ARM_MOVT_PREL
:
7786 case R_ARM_THM_MOVW_ABS_NC
:
7787 case R_ARM_THM_MOVT_ABS
:
7788 case R_ARM_THM_MOVW_PREL_NC
:
7789 case R_ARM_THM_MOVT_PREL
:
7790 /* Should the interworking branches be here also? */
7794 struct elf32_arm_link_hash_entry
*eh
;
7795 struct elf32_arm_relocs_copied
**pp
;
7796 struct elf32_arm_relocs_copied
*p
;
7798 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7800 if (h
->plt
.refcount
> 0)
7802 h
->plt
.refcount
-= 1;
7803 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_THM_CALL
)
7804 eh
->plt_thumb_refcount
--;
7807 if (r_type
== R_ARM_ABS32
7808 || r_type
== R_ARM_REL32
7809 || r_type
== R_ARM_ABS32_NOI
7810 || r_type
== R_ARM_REL32_NOI
)
7812 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
7814 if (p
->section
== sec
)
7817 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
7818 || ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32_NOI
)
7836 /* Look through the relocs for a section during the first phase. */
7839 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
7840 asection
*sec
, const Elf_Internal_Rela
*relocs
)
7842 Elf_Internal_Shdr
*symtab_hdr
;
7843 struct elf_link_hash_entry
**sym_hashes
;
7844 struct elf_link_hash_entry
**sym_hashes_end
;
7845 const Elf_Internal_Rela
*rel
;
7846 const Elf_Internal_Rela
*rel_end
;
7849 bfd_vma
*local_got_offsets
;
7850 struct elf32_arm_link_hash_table
*htab
;
7852 if (info
->relocatable
)
7855 htab
= elf32_arm_hash_table (info
);
7858 /* Create dynamic sections for relocatable executables so that we can
7859 copy relocations. */
7860 if (htab
->root
.is_relocatable_executable
7861 && ! htab
->root
.dynamic_sections_created
)
7863 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
7867 dynobj
= elf_hash_table (info
)->dynobj
;
7868 local_got_offsets
= elf_local_got_offsets (abfd
);
7870 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
7871 sym_hashes
= elf_sym_hashes (abfd
);
7872 sym_hashes_end
= sym_hashes
7873 + symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
);
7875 if (!elf_bad_symtab (abfd
))
7876 sym_hashes_end
-= symtab_hdr
->sh_info
;
7878 rel_end
= relocs
+ sec
->reloc_count
;
7879 for (rel
= relocs
; rel
< rel_end
; rel
++)
7881 struct elf_link_hash_entry
*h
;
7882 struct elf32_arm_link_hash_entry
*eh
;
7883 unsigned long r_symndx
;
7886 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7887 r_type
= ELF32_R_TYPE (rel
->r_info
);
7888 r_type
= arm_real_reloc_type (htab
, r_type
);
7890 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7892 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
7897 if (r_symndx
< symtab_hdr
->sh_info
)
7901 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7902 while (h
->root
.type
== bfd_link_hash_indirect
7903 || h
->root
.type
== bfd_link_hash_warning
)
7904 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7907 eh
= (struct elf32_arm_link_hash_entry
*) h
;
7912 case R_ARM_GOT_PREL
:
7913 case R_ARM_TLS_GD32
:
7914 case R_ARM_TLS_IE32
:
7915 /* This symbol requires a global offset table entry. */
7917 int tls_type
, old_tls_type
;
7921 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
7922 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
7923 default: tls_type
= GOT_NORMAL
; break;
7929 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
7933 bfd_signed_vma
*local_got_refcounts
;
7935 /* This is a global offset table entry for a local symbol. */
7936 local_got_refcounts
= elf_local_got_refcounts (abfd
);
7937 if (local_got_refcounts
== NULL
)
7941 size
= symtab_hdr
->sh_info
;
7942 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
7943 local_got_refcounts
= bfd_zalloc (abfd
, size
);
7944 if (local_got_refcounts
== NULL
)
7946 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
7947 elf32_arm_local_got_tls_type (abfd
)
7948 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
7950 local_got_refcounts
[r_symndx
] += 1;
7951 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
7954 /* We will already have issued an error message if there is a
7955 TLS / non-TLS mismatch, based on the symbol type. We don't
7956 support any linker relaxations. So just combine any TLS
7958 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
7959 && tls_type
!= GOT_NORMAL
)
7960 tls_type
|= old_tls_type
;
7962 if (old_tls_type
!= tls_type
)
7965 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
7967 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
7972 case R_ARM_TLS_LDM32
:
7973 if (r_type
== R_ARM_TLS_LDM32
)
7974 htab
->tls_ldm_got
.refcount
++;
7977 case R_ARM_GOTOFF32
:
7979 if (htab
->sgot
== NULL
)
7981 if (htab
->root
.dynobj
== NULL
)
7982 htab
->root
.dynobj
= abfd
;
7983 if (!create_got_section (htab
->root
.dynobj
, info
))
7989 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
7990 ldr __GOTT_INDEX__ offsets. */
7991 if (!htab
->vxworks_p
)
7996 case R_ARM_ABS32_NOI
:
7998 case R_ARM_REL32_NOI
:
8004 case R_ARM_THM_CALL
:
8005 case R_ARM_MOVW_ABS_NC
:
8006 case R_ARM_MOVT_ABS
:
8007 case R_ARM_MOVW_PREL_NC
:
8008 case R_ARM_MOVT_PREL
:
8009 case R_ARM_THM_MOVW_ABS_NC
:
8010 case R_ARM_THM_MOVT_ABS
:
8011 case R_ARM_THM_MOVW_PREL_NC
:
8012 case R_ARM_THM_MOVT_PREL
:
8013 /* Should the interworking branches be listed here? */
8016 /* If this reloc is in a read-only section, we might
8017 need a copy reloc. We can't check reliably at this
8018 stage whether the section is read-only, as input
8019 sections have not yet been mapped to output sections.
8020 Tentatively set the flag for now, and correct in
8021 adjust_dynamic_symbol. */
8025 /* We may need a .plt entry if the function this reloc
8026 refers to is in a different object. We can't tell for
8027 sure yet, because something later might force the
8029 if (r_type
!= R_ARM_ABS32
8030 && r_type
!= R_ARM_REL32
8031 && r_type
!= R_ARM_ABS32_NOI
8032 && r_type
!= R_ARM_REL32_NOI
)
8035 /* If we create a PLT entry, this relocation will reference
8036 it, even if it's an ABS32 relocation. */
8037 h
->plt
.refcount
+= 1;
8039 if (r_type
== R_ARM_THM_CALL
)
8040 eh
->plt_thumb_refcount
+= 1;
8043 /* If we are creating a shared library or relocatable executable,
8044 and this is a reloc against a global symbol, or a non PC
8045 relative reloc against a local symbol, then we need to copy
8046 the reloc into the shared library. However, if we are linking
8047 with -Bsymbolic, we do not need to copy a reloc against a
8048 global symbol which is defined in an object we are
8049 including in the link (i.e., DEF_REGULAR is set). At
8050 this point we have not seen all the input files, so it is
8051 possible that DEF_REGULAR is not set now but will be set
8052 later (it is never cleared). We account for that
8053 possibility below by storing information in the
8054 relocs_copied field of the hash table entry. */
8055 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
8056 && (sec
->flags
& SEC_ALLOC
) != 0
8057 && ((r_type
== R_ARM_ABS32
|| r_type
== R_ARM_ABS32_NOI
)
8058 || (h
!= NULL
&& ! h
->needs_plt
8059 && (! info
->symbolic
|| ! h
->def_regular
))))
8061 struct elf32_arm_relocs_copied
*p
, **head
;
8063 /* When creating a shared object, we must copy these
8064 reloc types into the output file. We create a reloc
8065 section in dynobj and make room for this reloc. */
8070 name
= (bfd_elf_string_from_elf_section
8072 elf_elfheader (abfd
)->e_shstrndx
,
8073 elf_section_data (sec
)->rel_hdr
.sh_name
));
8077 BFD_ASSERT (reloc_section_p (htab
, name
, sec
));
8079 sreloc
= bfd_get_section_by_name (dynobj
, name
);
8084 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
8085 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
8086 if ((sec
->flags
& SEC_ALLOC
) != 0
8087 /* BPABI objects never have dynamic
8088 relocations mapped. */
8089 && !htab
->symbian_p
)
8090 flags
|= SEC_ALLOC
| SEC_LOAD
;
8091 sreloc
= bfd_make_section_with_flags (dynobj
,
8095 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
8099 elf_section_data (sec
)->sreloc
= sreloc
;
8102 /* If this is a global symbol, we count the number of
8103 relocations we need for this symbol. */
8106 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
8110 /* Track dynamic relocs needed for local syms too.
8111 We really need local syms available to do this
8117 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
8122 vpp
= &elf_section_data (s
)->local_dynrel
;
8123 head
= (struct elf32_arm_relocs_copied
**) vpp
;
8127 if (p
== NULL
|| p
->section
!= sec
)
8129 bfd_size_type amt
= sizeof *p
;
8131 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
8141 if (r_type
== R_ARM_REL32
|| r_type
== R_ARM_REL32_NOI
)
8147 /* This relocation describes the C++ object vtable hierarchy.
8148 Reconstruct it for later use during GC. */
8149 case R_ARM_GNU_VTINHERIT
:
8150 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
8154 /* This relocation describes which C++ vtable entries are actually
8155 used. Record for later use during GC. */
8156 case R_ARM_GNU_VTENTRY
:
8157 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
8166 /* Unwinding tables are not referenced directly. This pass marks them as
8167 required if the corresponding code section is marked. */
8170 elf32_arm_gc_mark_extra_sections(struct bfd_link_info
*info
,
8171 elf_gc_mark_hook_fn gc_mark_hook
)
8174 Elf_Internal_Shdr
**elf_shdrp
;
8177 /* Marking EH data may cause additional code sections to be marked,
8178 requiring multiple passes. */
8183 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
8187 if (bfd_get_flavour (sub
) != bfd_target_elf_flavour
)
8190 elf_shdrp
= elf_elfsections (sub
);
8191 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
8193 Elf_Internal_Shdr
*hdr
;
8194 hdr
= &elf_section_data (o
)->this_hdr
;
8195 if (hdr
->sh_type
== SHT_ARM_EXIDX
&& hdr
->sh_link
8197 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
8200 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
8210 /* Treat mapping symbols as special target symbols. */
8213 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
8215 return bfd_is_arm_special_symbol_name (sym
->name
,
8216 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
8219 /* This is a copy of elf_find_function() from elf.c except that
8220 ARM mapping symbols are ignored when looking for function names
8221 and STT_ARM_TFUNC is considered to a function type. */
8224 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
8228 const char ** filename_ptr
,
8229 const char ** functionname_ptr
)
8231 const char * filename
= NULL
;
8232 asymbol
* func
= NULL
;
8233 bfd_vma low_func
= 0;
8236 for (p
= symbols
; *p
!= NULL
; p
++)
8240 q
= (elf_symbol_type
*) *p
;
8242 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
8247 filename
= bfd_asymbol_name (&q
->symbol
);
8252 /* Skip mapping symbols. */
8253 if ((q
->symbol
.flags
& BSF_LOCAL
)
8254 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
8255 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
8258 if (bfd_get_section (&q
->symbol
) == section
8259 && q
->symbol
.value
>= low_func
8260 && q
->symbol
.value
<= offset
)
8262 func
= (asymbol
*) q
;
8263 low_func
= q
->symbol
.value
;
8273 *filename_ptr
= filename
;
8274 if (functionname_ptr
)
8275 *functionname_ptr
= bfd_asymbol_name (func
);
8281 /* Find the nearest line to a particular section and offset, for error
8282 reporting. This code is a duplicate of the code in elf.c, except
8283 that it uses arm_elf_find_function. */
8286 elf32_arm_find_nearest_line (bfd
* abfd
,
8290 const char ** filename_ptr
,
8291 const char ** functionname_ptr
,
8292 unsigned int * line_ptr
)
8294 bfd_boolean found
= FALSE
;
8296 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
8298 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
8299 filename_ptr
, functionname_ptr
,
8301 & elf_tdata (abfd
)->dwarf2_find_line_info
))
8303 if (!*functionname_ptr
)
8304 arm_elf_find_function (abfd
, section
, symbols
, offset
,
8305 *filename_ptr
? NULL
: filename_ptr
,
8311 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
8312 & found
, filename_ptr
,
8313 functionname_ptr
, line_ptr
,
8314 & elf_tdata (abfd
)->line_info
))
8317 if (found
&& (*functionname_ptr
|| *line_ptr
))
8320 if (symbols
== NULL
)
8323 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
8324 filename_ptr
, functionname_ptr
))
8332 elf32_arm_find_inliner_info (bfd
* abfd
,
8333 const char ** filename_ptr
,
8334 const char ** functionname_ptr
,
8335 unsigned int * line_ptr
)
8338 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
8339 functionname_ptr
, line_ptr
,
8340 & elf_tdata (abfd
)->dwarf2_find_line_info
);
8344 /* Adjust a symbol defined by a dynamic object and referenced by a
8345 regular object. The current definition is in some section of the
8346 dynamic object, but we're not including those sections. We have to
8347 change the definition to something the rest of the link can
8351 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
8352 struct elf_link_hash_entry
* h
)
8356 unsigned int power_of_two
;
8357 struct elf32_arm_link_hash_entry
* eh
;
8358 struct elf32_arm_link_hash_table
*globals
;
8360 globals
= elf32_arm_hash_table (info
);
8361 dynobj
= elf_hash_table (info
)->dynobj
;
8363 /* Make sure we know what is going on here. */
8364 BFD_ASSERT (dynobj
!= NULL
8366 || h
->u
.weakdef
!= NULL
8369 && !h
->def_regular
)));
8371 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8373 /* If this is a function, put it in the procedure linkage table. We
8374 will fill in the contents of the procedure linkage table later,
8375 when we know the address of the .got section. */
8376 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
8379 if (h
->plt
.refcount
<= 0
8380 || SYMBOL_CALLS_LOCAL (info
, h
)
8381 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
8382 && h
->root
.type
== bfd_link_hash_undefweak
))
8384 /* This case can occur if we saw a PLT32 reloc in an input
8385 file, but the symbol was never referred to by a dynamic
8386 object, or if all references were garbage collected. In
8387 such a case, we don't actually need to build a procedure
8388 linkage table, and we can just do a PC24 reloc instead. */
8389 h
->plt
.offset
= (bfd_vma
) -1;
8390 eh
->plt_thumb_refcount
= 0;
8398 /* It's possible that we incorrectly decided a .plt reloc was
8399 needed for an R_ARM_PC24 or similar reloc to a non-function sym
8400 in check_relocs. We can't decide accurately between function
8401 and non-function syms in check-relocs; Objects loaded later in
8402 the link may change h->type. So fix it now. */
8403 h
->plt
.offset
= (bfd_vma
) -1;
8404 eh
->plt_thumb_refcount
= 0;
8407 /* If this is a weak symbol, and there is a real definition, the
8408 processor independent code will have arranged for us to see the
8409 real definition first, and we can just use the same value. */
8410 if (h
->u
.weakdef
!= NULL
)
8412 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
8413 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
8414 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
8415 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
8419 /* If there are no non-GOT references, we do not need a copy
8421 if (!h
->non_got_ref
)
8424 /* This is a reference to a symbol defined by a dynamic object which
8425 is not a function. */
8427 /* If we are creating a shared library, we must presume that the
8428 only references to the symbol are via the global offset table.
8429 For such cases we need not do anything here; the relocations will
8430 be handled correctly by relocate_section. Relocatable executables
8431 can reference data in shared objects directly, so we don't need to
8432 do anything here. */
8433 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
8438 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
8439 h
->root
.root
.string
);
8443 /* We must allocate the symbol in our .dynbss section, which will
8444 become part of the .bss section of the executable. There will be
8445 an entry for this symbol in the .dynsym section. The dynamic
8446 object will contain position independent code, so all references
8447 from the dynamic object to this symbol will go through the global
8448 offset table. The dynamic linker will use the .dynsym entry to
8449 determine the address it must put in the global offset table, so
8450 both the dynamic object and the regular object will refer to the
8451 same memory location for the variable. */
8452 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
8453 BFD_ASSERT (s
!= NULL
);
8455 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
8456 copy the initial value out of the dynamic object and into the
8457 runtime process image. We need to remember the offset into the
8458 .rel(a).bss section we are going to use. */
8459 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
8463 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
8464 BFD_ASSERT (srel
!= NULL
);
8465 srel
->size
+= RELOC_SIZE (globals
);
8469 /* We need to figure out the alignment required for this symbol. I
8470 have no idea how ELF linkers handle this. */
8471 power_of_two
= bfd_log2 (h
->size
);
8472 if (power_of_two
> 3)
8475 /* Apply the required alignment. */
8476 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
8477 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
8479 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
8483 /* Define the symbol as being at this point in the section. */
8484 h
->root
.u
.def
.section
= s
;
8485 h
->root
.u
.def
.value
= s
->size
;
8487 /* Increment the section size to make room for the symbol. */
8493 /* Allocate space in .plt, .got and associated reloc sections for
8497 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
8499 struct bfd_link_info
*info
;
8500 struct elf32_arm_link_hash_table
*htab
;
8501 struct elf32_arm_link_hash_entry
*eh
;
8502 struct elf32_arm_relocs_copied
*p
;
8504 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8506 if (h
->root
.type
== bfd_link_hash_indirect
)
8509 if (h
->root
.type
== bfd_link_hash_warning
)
8510 /* When warning symbols are created, they **replace** the "real"
8511 entry in the hash table, thus we never get to see the real
8512 symbol in a hash traversal. So look at it now. */
8513 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8515 info
= (struct bfd_link_info
*) inf
;
8516 htab
= elf32_arm_hash_table (info
);
8518 if (htab
->root
.dynamic_sections_created
8519 && h
->plt
.refcount
> 0)
8521 /* Make sure this symbol is output as a dynamic symbol.
8522 Undefined weak syms won't yet be marked as dynamic. */
8523 if (h
->dynindx
== -1
8524 && !h
->forced_local
)
8526 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8531 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
8533 asection
*s
= htab
->splt
;
8535 /* If this is the first .plt entry, make room for the special
8538 s
->size
+= htab
->plt_header_size
;
8540 h
->plt
.offset
= s
->size
;
8542 /* If we will insert a Thumb trampoline before this PLT, leave room
8544 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
8546 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
8547 s
->size
+= PLT_THUMB_STUB_SIZE
;
8550 /* If this symbol is not defined in a regular file, and we are
8551 not generating a shared library, then set the symbol to this
8552 location in the .plt. This is required to make function
8553 pointers compare as equal between the normal executable and
8554 the shared library. */
8558 h
->root
.u
.def
.section
= s
;
8559 h
->root
.u
.def
.value
= h
->plt
.offset
;
8561 /* Make sure the function is not marked as Thumb, in case
8562 it is the target of an ABS32 relocation, which will
8563 point to the PLT entry. */
8564 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
8565 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
8568 /* Make room for this entry. */
8569 s
->size
+= htab
->plt_entry_size
;
8571 if (!htab
->symbian_p
)
8573 /* We also need to make an entry in the .got.plt section, which
8574 will be placed in the .got section by the linker script. */
8575 eh
->plt_got_offset
= htab
->sgotplt
->size
;
8576 htab
->sgotplt
->size
+= 4;
8579 /* We also need to make an entry in the .rel(a).plt section. */
8580 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
8582 /* VxWorks executables have a second set of relocations for
8583 each PLT entry. They go in a separate relocation section,
8584 which is processed by the kernel loader. */
8585 if (htab
->vxworks_p
&& !info
->shared
)
8587 /* There is a relocation for the initial PLT entry:
8588 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
8589 if (h
->plt
.offset
== htab
->plt_header_size
)
8590 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
8592 /* There are two extra relocations for each subsequent
8593 PLT entry: an R_ARM_32 relocation for the GOT entry,
8594 and an R_ARM_32 relocation for the PLT entry. */
8595 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
8600 h
->plt
.offset
= (bfd_vma
) -1;
8606 h
->plt
.offset
= (bfd_vma
) -1;
8610 if (h
->got
.refcount
> 0)
8614 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
8617 /* Make sure this symbol is output as a dynamic symbol.
8618 Undefined weak syms won't yet be marked as dynamic. */
8619 if (h
->dynindx
== -1
8620 && !h
->forced_local
)
8622 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8626 if (!htab
->symbian_p
)
8629 h
->got
.offset
= s
->size
;
8631 if (tls_type
== GOT_UNKNOWN
)
8634 if (tls_type
== GOT_NORMAL
)
8635 /* Non-TLS symbols need one GOT slot. */
8639 if (tls_type
& GOT_TLS_GD
)
8640 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
8642 if (tls_type
& GOT_TLS_IE
)
8643 /* R_ARM_TLS_IE32 needs one GOT slot. */
8647 dyn
= htab
->root
.dynamic_sections_created
;
8650 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
8652 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
8655 if (tls_type
!= GOT_NORMAL
8656 && (info
->shared
|| indx
!= 0)
8657 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8658 || h
->root
.type
!= bfd_link_hash_undefweak
))
8660 if (tls_type
& GOT_TLS_IE
)
8661 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8663 if (tls_type
& GOT_TLS_GD
)
8664 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8666 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
8667 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8669 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8670 || h
->root
.type
!= bfd_link_hash_undefweak
)
8672 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8673 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8677 h
->got
.offset
= (bfd_vma
) -1;
8679 /* Allocate stubs for exported Thumb functions on v4t. */
8680 if (!htab
->use_blx
&& h
->dynindx
!= -1
8682 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
8683 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
8685 struct elf_link_hash_entry
* th
;
8686 struct bfd_link_hash_entry
* bh
;
8687 struct elf_link_hash_entry
* myh
;
8691 /* Create a new symbol to regist the real location of the function. */
8692 s
= h
->root
.u
.def
.section
;
8693 sprintf(name
, "__real_%s", h
->root
.root
.string
);
8694 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
8695 name
, BSF_GLOBAL
, s
,
8696 h
->root
.u
.def
.value
,
8697 NULL
, TRUE
, FALSE
, &bh
);
8699 myh
= (struct elf_link_hash_entry
*) bh
;
8700 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
8701 myh
->forced_local
= 1;
8702 eh
->export_glue
= myh
;
8703 th
= record_arm_to_thumb_glue (info
, h
);
8704 /* Point the symbol at the stub. */
8705 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
8706 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
8707 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
8710 if (eh
->relocs_copied
== NULL
)
8713 /* In the shared -Bsymbolic case, discard space allocated for
8714 dynamic pc-relative relocs against symbols which turn out to be
8715 defined in regular objects. For the normal shared case, discard
8716 space for pc-relative relocs that have become local due to symbol
8717 visibility changes. */
8719 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
8721 /* The only reloc thats uses pc_count are R_ARM_REL32 and
8722 R_ARM_REL32_NOI, which will appear on something like
8723 ".long foo - .". We want calls to protected symbols to resolve
8724 directly to the function rather than going via the plt. If people
8725 want function pointer comparisons to work as expected then they
8726 should avoid writing assembly like ".long foo - .". */
8727 if (SYMBOL_CALLS_LOCAL (info
, h
))
8729 struct elf32_arm_relocs_copied
**pp
;
8731 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
8733 p
->count
-= p
->pc_count
;
8742 /* Also discard relocs on undefined weak syms with non-default
8744 if (eh
->relocs_copied
!= NULL
8745 && h
->root
.type
== bfd_link_hash_undefweak
)
8747 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8748 eh
->relocs_copied
= NULL
;
8750 /* Make sure undefined weak symbols are output as a dynamic
8752 else if (h
->dynindx
== -1
8753 && !h
->forced_local
)
8755 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8760 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
8761 && h
->root
.type
== bfd_link_hash_new
)
8763 /* Output absolute symbols so that we can create relocations
8764 against them. For normal symbols we output a relocation
8765 against the section that contains them. */
8766 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8773 /* For the non-shared case, discard space for relocs against
8774 symbols which turn out to need copy relocs or are not
8780 || (htab
->root
.dynamic_sections_created
8781 && (h
->root
.type
== bfd_link_hash_undefweak
8782 || h
->root
.type
== bfd_link_hash_undefined
))))
8784 /* Make sure this symbol is output as a dynamic symbol.
8785 Undefined weak syms won't yet be marked as dynamic. */
8786 if (h
->dynindx
== -1
8787 && !h
->forced_local
)
8789 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8793 /* If that succeeded, we know we'll be keeping all the
8795 if (h
->dynindx
!= -1)
8799 eh
->relocs_copied
= NULL
;
8804 /* Finally, allocate space. */
8805 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
8807 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
8808 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
8814 /* Find any dynamic relocs that apply to read-only sections. */
8817 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
*h
, PTR inf
)
8819 struct elf32_arm_link_hash_entry
*eh
;
8820 struct elf32_arm_relocs_copied
*p
;
8822 if (h
->root
.type
== bfd_link_hash_warning
)
8823 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8825 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8826 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
8828 asection
*s
= p
->section
;
8830 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8832 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
8834 info
->flags
|= DF_TEXTREL
;
8836 /* Not an error, just cut short the traversal. */
8844 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info
*info
,
8847 struct elf32_arm_link_hash_table
*globals
;
8849 globals
= elf32_arm_hash_table (info
);
8850 globals
->byteswap_code
= byteswap_code
;
8853 /* Set the sizes of the dynamic sections. */
8856 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
8857 struct bfd_link_info
* info
)
8864 struct elf32_arm_link_hash_table
*htab
;
8866 htab
= elf32_arm_hash_table (info
);
8867 dynobj
= elf_hash_table (info
)->dynobj
;
8868 BFD_ASSERT (dynobj
!= NULL
);
8869 check_use_blx (htab
);
8871 if (elf_hash_table (info
)->dynamic_sections_created
)
8873 /* Set the contents of the .interp section to the interpreter. */
8874 if (info
->executable
)
8876 s
= bfd_get_section_by_name (dynobj
, ".interp");
8877 BFD_ASSERT (s
!= NULL
);
8878 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8879 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8883 /* Set up .got offsets for local syms, and space for local dynamic
8885 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8887 bfd_signed_vma
*local_got
;
8888 bfd_signed_vma
*end_local_got
;
8889 char *local_tls_type
;
8890 bfd_size_type locsymcount
;
8891 Elf_Internal_Shdr
*symtab_hdr
;
8894 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
8897 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8899 struct elf32_arm_relocs_copied
*p
;
8901 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8903 if (!bfd_is_abs_section (p
->section
)
8904 && bfd_is_abs_section (p
->section
->output_section
))
8906 /* Input section has been discarded, either because
8907 it is a copy of a linkonce section or due to
8908 linker script /DISCARD/, so we'll be discarding
8911 else if (p
->count
!= 0)
8913 srel
= elf_section_data (p
->section
)->sreloc
;
8914 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
8915 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
8916 info
->flags
|= DF_TEXTREL
;
8921 local_got
= elf_local_got_refcounts (ibfd
);
8925 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
8926 locsymcount
= symtab_hdr
->sh_info
;
8927 end_local_got
= local_got
+ locsymcount
;
8928 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
8930 srel
= htab
->srelgot
;
8931 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
8935 *local_got
= s
->size
;
8936 if (*local_tls_type
& GOT_TLS_GD
)
8937 /* TLS_GD relocs need an 8-byte structure in the GOT. */
8939 if (*local_tls_type
& GOT_TLS_IE
)
8941 if (*local_tls_type
== GOT_NORMAL
)
8944 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
8945 srel
->size
+= RELOC_SIZE (htab
);
8948 *local_got
= (bfd_vma
) -1;
8952 if (htab
->tls_ldm_got
.refcount
> 0)
8954 /* Allocate two GOT entries and one dynamic relocation (if necessary)
8955 for R_ARM_TLS_LDM32 relocations. */
8956 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
8957 htab
->sgot
->size
+= 8;
8959 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
8962 htab
->tls_ldm_got
.offset
= -1;
8964 /* Allocate global sym .plt and .got entries, and space for global
8965 sym dynamic relocs. */
8966 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
8968 /* Here we rummage through the found bfds to collect glue information. */
8969 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8971 /* Initialise mapping tables for code/data. */
8972 bfd_elf32_arm_init_maps (ibfd
);
8974 if (!bfd_elf32_arm_process_before_allocation (ibfd
, info
)
8975 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd
, info
))
8976 /* xgettext:c-format */
8977 _bfd_error_handler (_("Errors encountered processing file %s"),
8981 /* The check_relocs and adjust_dynamic_symbol entry points have
8982 determined the sizes of the various dynamic sections. Allocate
8986 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8990 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8993 /* It's OK to base decisions on the section name, because none
8994 of the dynobj section names depend upon the input files. */
8995 name
= bfd_get_section_name (dynobj
, s
);
8997 if (strcmp (name
, ".plt") == 0)
8999 /* Remember whether there is a PLT. */
9002 else if (CONST_STRNEQ (name
, ".rel"))
9006 /* Remember whether there are any reloc sections other
9007 than .rel(a).plt and .rela.plt.unloaded. */
9008 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
9011 /* We use the reloc_count field as a counter if we need
9012 to copy relocs into the output file. */
9016 else if (! CONST_STRNEQ (name
, ".got")
9017 && strcmp (name
, ".dynbss") != 0)
9019 /* It's not one of our sections, so don't allocate space. */
9025 /* If we don't need this section, strip it from the
9026 output file. This is mostly to handle .rel(a).bss and
9027 .rel(a).plt. We must create both sections in
9028 create_dynamic_sections, because they must be created
9029 before the linker maps input sections to output
9030 sections. The linker does that before
9031 adjust_dynamic_symbol is called, and it is that
9032 function which decides whether anything needs to go
9033 into these sections. */
9034 s
->flags
|= SEC_EXCLUDE
;
9038 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9041 /* Allocate memory for the section contents. */
9042 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
9043 if (s
->contents
== NULL
)
9047 if (elf_hash_table (info
)->dynamic_sections_created
)
9049 /* Add some entries to the .dynamic section. We fill in the
9050 values later, in elf32_arm_finish_dynamic_sections, but we
9051 must add the entries now so that we get the correct size for
9052 the .dynamic section. The DT_DEBUG entry is filled in by the
9053 dynamic linker and used by the debugger. */
9054 #define add_dynamic_entry(TAG, VAL) \
9055 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9057 if (info
->executable
)
9059 if (!add_dynamic_entry (DT_DEBUG
, 0))
9065 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
9066 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9067 || !add_dynamic_entry (DT_PLTREL
,
9068 htab
->use_rel
? DT_REL
: DT_RELA
)
9069 || !add_dynamic_entry (DT_JMPREL
, 0))
9077 if (!add_dynamic_entry (DT_REL
, 0)
9078 || !add_dynamic_entry (DT_RELSZ
, 0)
9079 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
9084 if (!add_dynamic_entry (DT_RELA
, 0)
9085 || !add_dynamic_entry (DT_RELASZ
, 0)
9086 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
9091 /* If any dynamic relocs apply to a read-only section,
9092 then we need a DT_TEXTREL entry. */
9093 if ((info
->flags
& DF_TEXTREL
) == 0)
9094 elf_link_hash_traverse (&htab
->root
, elf32_arm_readonly_dynrelocs
,
9097 if ((info
->flags
& DF_TEXTREL
) != 0)
9099 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9103 #undef add_dynamic_entry
9108 /* Finish up dynamic symbol handling. We set the contents of various
9109 dynamic sections here. */
9112 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
, struct bfd_link_info
* info
,
9113 struct elf_link_hash_entry
* h
, Elf_Internal_Sym
* sym
)
9116 struct elf32_arm_link_hash_table
*htab
;
9117 struct elf32_arm_link_hash_entry
*eh
;
9119 dynobj
= elf_hash_table (info
)->dynobj
;
9120 htab
= elf32_arm_hash_table (info
);
9121 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9123 if (h
->plt
.offset
!= (bfd_vma
) -1)
9129 Elf_Internal_Rela rel
;
9131 /* This symbol has an entry in the procedure linkage table. Set
9134 BFD_ASSERT (h
->dynindx
!= -1);
9136 splt
= bfd_get_section_by_name (dynobj
, ".plt");
9137 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
9138 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
9140 /* Fill in the entry in the procedure linkage table. */
9141 if (htab
->symbian_p
)
9143 put_arm_insn (htab
, output_bfd
,
9144 elf32_arm_symbian_plt_entry
[0],
9145 splt
->contents
+ h
->plt
.offset
);
9146 bfd_put_32 (output_bfd
,
9147 elf32_arm_symbian_plt_entry
[1],
9148 splt
->contents
+ h
->plt
.offset
+ 4);
9150 /* Fill in the entry in the .rel.plt section. */
9151 rel
.r_offset
= (splt
->output_section
->vma
9152 + splt
->output_offset
9153 + h
->plt
.offset
+ 4);
9154 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
9156 /* Get the index in the procedure linkage table which
9157 corresponds to this symbol. This is the index of this symbol
9158 in all the symbols for which we are making plt entries. The
9159 first entry in the procedure linkage table is reserved. */
9160 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
9161 / htab
->plt_entry_size
);
9165 bfd_vma got_offset
, got_address
, plt_address
;
9166 bfd_vma got_displacement
;
9170 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
9171 BFD_ASSERT (sgot
!= NULL
);
9173 /* Get the offset into the .got.plt table of the entry that
9174 corresponds to this function. */
9175 got_offset
= eh
->plt_got_offset
;
9177 /* Get the index in the procedure linkage table which
9178 corresponds to this symbol. This is the index of this symbol
9179 in all the symbols for which we are making plt entries. The
9180 first three entries in .got.plt are reserved; after that
9181 symbols appear in the same order as in .plt. */
9182 plt_index
= (got_offset
- 12) / 4;
9184 /* Calculate the address of the GOT entry. */
9185 got_address
= (sgot
->output_section
->vma
9186 + sgot
->output_offset
9189 /* ...and the address of the PLT entry. */
9190 plt_address
= (splt
->output_section
->vma
9191 + splt
->output_offset
9194 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
9195 if (htab
->vxworks_p
&& info
->shared
)
9200 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
9202 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
9204 val
|= got_address
- sgot
->output_section
->vma
;
9206 val
|= plt_index
* RELOC_SIZE (htab
);
9207 if (i
== 2 || i
== 5)
9208 bfd_put_32 (output_bfd
, val
, ptr
);
9210 put_arm_insn (htab
, output_bfd
, val
, ptr
);
9213 else if (htab
->vxworks_p
)
9218 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++)
9220 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
9224 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
9226 val
|= plt_index
* RELOC_SIZE (htab
);
9227 if (i
== 2 || i
== 5)
9228 bfd_put_32 (output_bfd
, val
, ptr
);
9230 put_arm_insn (htab
, output_bfd
, val
, ptr
);
9233 loc
= (htab
->srelplt2
->contents
9234 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
9236 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
9237 referencing the GOT for this PLT entry. */
9238 rel
.r_offset
= plt_address
+ 8;
9239 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9240 rel
.r_addend
= got_offset
;
9241 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9242 loc
+= RELOC_SIZE (htab
);
9244 /* Create the R_ARM_ABS32 relocation referencing the
9245 beginning of the PLT for this GOT entry. */
9246 rel
.r_offset
= got_address
;
9247 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
9249 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9253 /* Calculate the displacement between the PLT slot and the
9254 entry in the GOT. The eight-byte offset accounts for the
9255 value produced by adding to pc in the first instruction
9257 got_displacement
= got_address
- (plt_address
+ 8);
9259 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
9261 if (!htab
->use_blx
&& eh
->plt_thumb_refcount
> 0)
9263 put_thumb_insn (htab
, output_bfd
,
9264 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
9265 put_thumb_insn (htab
, output_bfd
,
9266 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
9269 put_arm_insn (htab
, output_bfd
,
9270 elf32_arm_plt_entry
[0]
9271 | ((got_displacement
& 0x0ff00000) >> 20),
9273 put_arm_insn (htab
, output_bfd
,
9274 elf32_arm_plt_entry
[1]
9275 | ((got_displacement
& 0x000ff000) >> 12),
9277 put_arm_insn (htab
, output_bfd
,
9278 elf32_arm_plt_entry
[2]
9279 | (got_displacement
& 0x00000fff),
9281 #ifdef FOUR_WORD_PLT
9282 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
9286 /* Fill in the entry in the global offset table. */
9287 bfd_put_32 (output_bfd
,
9288 (splt
->output_section
->vma
9289 + splt
->output_offset
),
9290 sgot
->contents
+ got_offset
);
9292 /* Fill in the entry in the .rel(a).plt section. */
9294 rel
.r_offset
= got_address
;
9295 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
9298 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
9299 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9301 if (!h
->def_regular
)
9303 /* Mark the symbol as undefined, rather than as defined in
9304 the .plt section. Leave the value alone. */
9305 sym
->st_shndx
= SHN_UNDEF
;
9306 /* If the symbol is weak, we do need to clear the value.
9307 Otherwise, the PLT entry would provide a definition for
9308 the symbol even if the symbol wasn't defined anywhere,
9309 and so the symbol would never be NULL. */
9310 if (!h
->ref_regular_nonweak
)
9315 if (h
->got
.offset
!= (bfd_vma
) -1
9316 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
9317 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
9321 Elf_Internal_Rela rel
;
9325 /* This symbol has an entry in the global offset table. Set it
9327 sgot
= bfd_get_section_by_name (dynobj
, ".got");
9328 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
9329 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
9331 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
9333 rel
.r_offset
= (sgot
->output_section
->vma
9334 + sgot
->output_offset
9337 /* If this is a static link, or it is a -Bsymbolic link and the
9338 symbol is defined locally or was forced to be local because
9339 of a version file, we just want to emit a RELATIVE reloc.
9340 The entry in the global offset table will already have been
9341 initialized in the relocate_section function. */
9343 && SYMBOL_REFERENCES_LOCAL (info
, h
))
9345 BFD_ASSERT((h
->got
.offset
& 1) != 0);
9346 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
9349 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
9350 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
9355 BFD_ASSERT((h
->got
.offset
& 1) == 0);
9356 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
9357 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
9360 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
9361 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9367 Elf_Internal_Rela rel
;
9370 /* This symbol needs a copy reloc. Set it up. */
9371 BFD_ASSERT (h
->dynindx
!= -1
9372 && (h
->root
.type
== bfd_link_hash_defined
9373 || h
->root
.type
== bfd_link_hash_defweak
));
9375 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
9376 RELOC_SECTION (htab
, ".bss"));
9377 BFD_ASSERT (s
!= NULL
);
9380 rel
.r_offset
= (h
->root
.u
.def
.value
9381 + h
->root
.u
.def
.section
->output_section
->vma
9382 + h
->root
.u
.def
.section
->output_offset
);
9383 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
9384 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
9385 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
9388 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
9389 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
9390 to the ".got" section. */
9391 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
9392 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
9393 sym
->st_shndx
= SHN_ABS
;
9398 /* Finish up the dynamic sections. */
9401 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
9407 dynobj
= elf_hash_table (info
)->dynobj
;
9409 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
9410 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
9411 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
9413 if (elf_hash_table (info
)->dynamic_sections_created
)
9416 Elf32_External_Dyn
*dyncon
, *dynconend
;
9417 struct elf32_arm_link_hash_table
*htab
;
9419 htab
= elf32_arm_hash_table (info
);
9420 splt
= bfd_get_section_by_name (dynobj
, ".plt");
9421 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
9423 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
9424 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9426 for (; dyncon
< dynconend
; dyncon
++)
9428 Elf_Internal_Dyn dyn
;
9432 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9443 goto get_vma_if_bpabi
;
9446 goto get_vma_if_bpabi
;
9449 goto get_vma_if_bpabi
;
9451 name
= ".gnu.version";
9452 goto get_vma_if_bpabi
;
9454 name
= ".gnu.version_d";
9455 goto get_vma_if_bpabi
;
9457 name
= ".gnu.version_r";
9458 goto get_vma_if_bpabi
;
9464 name
= RELOC_SECTION (htab
, ".plt");
9466 s
= bfd_get_section_by_name (output_bfd
, name
);
9467 BFD_ASSERT (s
!= NULL
);
9468 if (!htab
->symbian_p
)
9469 dyn
.d_un
.d_ptr
= s
->vma
;
9471 /* In the BPABI, tags in the PT_DYNAMIC section point
9472 at the file offset, not the memory address, for the
9473 convenience of the post linker. */
9474 dyn
.d_un
.d_ptr
= s
->filepos
;
9475 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9479 if (htab
->symbian_p
)
9484 s
= bfd_get_section_by_name (output_bfd
,
9485 RELOC_SECTION (htab
, ".plt"));
9486 BFD_ASSERT (s
!= NULL
);
9487 dyn
.d_un
.d_val
= s
->size
;
9488 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9493 if (!htab
->symbian_p
)
9495 /* My reading of the SVR4 ABI indicates that the
9496 procedure linkage table relocs (DT_JMPREL) should be
9497 included in the overall relocs (DT_REL). This is
9498 what Solaris does. However, UnixWare can not handle
9499 that case. Therefore, we override the DT_RELSZ entry
9500 here to make it not include the JMPREL relocs. Since
9501 the linker script arranges for .rel(a).plt to follow all
9502 other relocation sections, we don't have to worry
9503 about changing the DT_REL entry. */
9504 s
= bfd_get_section_by_name (output_bfd
,
9505 RELOC_SECTION (htab
, ".plt"));
9507 dyn
.d_un
.d_val
-= s
->size
;
9508 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9515 /* In the BPABI, the DT_REL tag must point at the file
9516 offset, not the VMA, of the first relocation
9517 section. So, we use code similar to that in
9518 elflink.c, but do not check for SHF_ALLOC on the
9519 relcoation section, since relocations sections are
9520 never allocated under the BPABI. The comments above
9521 about Unixware notwithstanding, we include all of the
9522 relocations here. */
9523 if (htab
->symbian_p
)
9526 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
9527 ? SHT_REL
: SHT_RELA
);
9529 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
9531 Elf_Internal_Shdr
*hdr
9532 = elf_elfsections (output_bfd
)[i
];
9533 if (hdr
->sh_type
== type
)
9535 if (dyn
.d_tag
== DT_RELSZ
9536 || dyn
.d_tag
== DT_RELASZ
)
9537 dyn
.d_un
.d_val
+= hdr
->sh_size
;
9538 else if ((ufile_ptr
) hdr
->sh_offset
9539 <= dyn
.d_un
.d_val
- 1)
9540 dyn
.d_un
.d_val
= hdr
->sh_offset
;
9543 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9547 /* Set the bottom bit of DT_INIT/FINI if the
9548 corresponding function is Thumb. */
9550 name
= info
->init_function
;
9553 name
= info
->fini_function
;
9555 /* If it wasn't set by elf_bfd_final_link
9556 then there is nothing to adjust. */
9557 if (dyn
.d_un
.d_val
!= 0)
9559 struct elf_link_hash_entry
* eh
;
9561 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
9562 FALSE
, FALSE
, TRUE
);
9563 if (eh
!= (struct elf_link_hash_entry
*) NULL
9564 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
9566 dyn
.d_un
.d_val
|= 1;
9567 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9574 /* Fill in the first entry in the procedure linkage table. */
9575 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
9577 const bfd_vma
*plt0_entry
;
9578 bfd_vma got_address
, plt_address
, got_displacement
;
9580 /* Calculate the addresses of the GOT and PLT. */
9581 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
9582 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
9584 if (htab
->vxworks_p
)
9586 /* The VxWorks GOT is relocated by the dynamic linker.
9587 Therefore, we must emit relocations rather than simply
9588 computing the values now. */
9589 Elf_Internal_Rela rel
;
9591 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
9592 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
9593 splt
->contents
+ 0);
9594 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
9595 splt
->contents
+ 4);
9596 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
9597 splt
->contents
+ 8);
9598 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
9600 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
9601 rel
.r_offset
= plt_address
+ 12;
9602 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9604 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
9605 htab
->srelplt2
->contents
);
9609 got_displacement
= got_address
- (plt_address
+ 16);
9611 plt0_entry
= elf32_arm_plt0_entry
;
9612 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
9613 splt
->contents
+ 0);
9614 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
9615 splt
->contents
+ 4);
9616 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
9617 splt
->contents
+ 8);
9618 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
9619 splt
->contents
+ 12);
9621 #ifdef FOUR_WORD_PLT
9622 /* The displacement value goes in the otherwise-unused
9623 last word of the second entry. */
9624 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
9626 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
9631 /* UnixWare sets the entsize of .plt to 4, although that doesn't
9632 really seem like the right value. */
9633 if (splt
->output_section
->owner
== output_bfd
)
9634 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
9636 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
9638 /* Correct the .rel(a).plt.unloaded relocations. They will have
9639 incorrect symbol indexes. */
9643 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
9644 / htab
->plt_entry_size
);
9645 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
9647 for (; num_plts
; num_plts
--)
9649 Elf_Internal_Rela rel
;
9651 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
9652 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
9653 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
9654 p
+= RELOC_SIZE (htab
);
9656 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
9657 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
9658 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
9659 p
+= RELOC_SIZE (htab
);
9664 /* Fill in the first three entries in the global offset table. */
9670 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
9672 bfd_put_32 (output_bfd
,
9673 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
9675 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
9676 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
9679 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
9686 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
9688 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
9689 struct elf32_arm_link_hash_table
*globals
;
9691 i_ehdrp
= elf_elfheader (abfd
);
9693 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
9694 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
9696 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
9697 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
9701 globals
= elf32_arm_hash_table (link_info
);
9702 if (globals
->byteswap_code
)
9703 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
9707 static enum elf_reloc_type_class
9708 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
9710 switch ((int) ELF32_R_TYPE (rela
->r_info
))
9712 case R_ARM_RELATIVE
:
9713 return reloc_class_relative
;
9714 case R_ARM_JUMP_SLOT
:
9715 return reloc_class_plt
;
9717 return reloc_class_copy
;
9719 return reloc_class_normal
;
9723 /* Set the right machine number for an Arm ELF file. */
9726 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
9728 if (hdr
->sh_type
== SHT_NOTE
)
9729 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
9735 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
9737 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
9740 /* Return TRUE if this is an unwinding table entry. */
9743 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
9745 return (CONST_STRNEQ (name
, ELF_STRING_ARM_unwind
)
9746 || CONST_STRNEQ (name
, ELF_STRING_ARM_unwind_once
));
9750 /* Set the type and flags for an ARM section. We do this by
9751 the section name, which is a hack, but ought to work. */
9754 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
9758 name
= bfd_get_section_name (abfd
, sec
);
9760 if (is_arm_elf_unwind_section_name (abfd
, name
))
9762 hdr
->sh_type
= SHT_ARM_EXIDX
;
9763 hdr
->sh_flags
|= SHF_LINK_ORDER
;
9765 else if (strcmp(name
, ".ARM.attributes") == 0)
9767 hdr
->sh_type
= SHT_ARM_ATTRIBUTES
;
9772 /* Parse an Arm EABI attributes section. */
9774 elf32_arm_parse_attributes (bfd
*abfd
, Elf_Internal_Shdr
* hdr
)
9780 contents
= bfd_malloc (hdr
->sh_size
);
9783 if (!bfd_get_section_contents (abfd
, hdr
->bfd_section
, contents
, 0,
9792 len
= hdr
->sh_size
- 1;
9796 bfd_vma section_len
;
9798 section_len
= bfd_get_32 (abfd
, p
);
9800 if (section_len
> len
)
9803 namelen
= strlen ((char *)p
) + 1;
9804 section_len
-= namelen
+ 4;
9805 if (strcmp((char *)p
, "aeabi") != 0)
9807 /* Vendor section. Ignore it. */
9808 p
+= namelen
+ section_len
;
9813 while (section_len
> 0)
9818 bfd_vma subsection_len
;
9821 tag
= read_unsigned_leb128 (abfd
, p
, &n
);
9823 subsection_len
= bfd_get_32 (abfd
, p
);
9825 if (subsection_len
> section_len
)
9826 subsection_len
= section_len
;
9827 section_len
-= subsection_len
;
9828 subsection_len
-= n
+ 4;
9829 end
= p
+ subsection_len
;
9835 bfd_boolean is_string
;
9837 tag
= read_unsigned_leb128 (abfd
, p
, &n
);
9839 if (tag
== 4 || tag
== 5)
9844 is_string
= (tag
& 1) != 0;
9845 if (tag
== Tag_compatibility
)
9847 val
= read_unsigned_leb128 (abfd
, p
, &n
);
9849 elf32_arm_add_eabi_attr_compat (abfd
, val
,
9851 p
+= strlen ((char *)p
) + 1;
9855 elf32_arm_add_eabi_attr_string (abfd
, tag
,
9857 p
+= strlen ((char *)p
) + 1;
9861 val
= read_unsigned_leb128 (abfd
, p
, &n
);
9863 elf32_arm_add_eabi_attr_int (abfd
, tag
, val
);
9869 /* Don't have anywhere convenient to attach these.
9870 Fall through for now. */
9872 /* Ignore things we don't kow about. */
9873 p
+= subsection_len
;
9884 /* Handle an ARM specific section when reading an object file. This is
9885 called when bfd_section_from_shdr finds a section with an unknown
9889 elf32_arm_section_from_shdr (bfd
*abfd
,
9890 Elf_Internal_Shdr
* hdr
,
9894 /* There ought to be a place to keep ELF backend specific flags, but
9895 at the moment there isn't one. We just keep track of the
9896 sections by their name, instead. Fortunately, the ABI gives
9897 names for all the ARM specific sections, so we will probably get
9899 switch (hdr
->sh_type
)
9902 case SHT_ARM_PREEMPTMAP
:
9903 case SHT_ARM_ATTRIBUTES
:
9910 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
9913 if (hdr
->sh_type
== SHT_ARM_ATTRIBUTES
)
9914 elf32_arm_parse_attributes(abfd
, hdr
);
9918 /* A structure used to record a list of sections, independently
9919 of the next and prev fields in the asection structure. */
9920 typedef struct section_list
9923 struct section_list
* next
;
9924 struct section_list
* prev
;
9928 /* Unfortunately we need to keep a list of sections for which
9929 an _arm_elf_section_data structure has been allocated. This
9930 is because it is possible for functions like elf32_arm_write_section
9931 to be called on a section which has had an elf_data_structure
9932 allocated for it (and so the used_by_bfd field is valid) but
9933 for which the ARM extended version of this structure - the
9934 _arm_elf_section_data structure - has not been allocated. */
9935 static section_list
* sections_with_arm_elf_section_data
= NULL
;
9938 record_section_with_arm_elf_section_data (asection
* sec
)
9940 struct section_list
* entry
;
9942 entry
= bfd_malloc (sizeof (* entry
));
9946 entry
->next
= sections_with_arm_elf_section_data
;
9948 if (entry
->next
!= NULL
)
9949 entry
->next
->prev
= entry
;
9950 sections_with_arm_elf_section_data
= entry
;
9953 static struct section_list
*
9954 find_arm_elf_section_entry (asection
* sec
)
9956 struct section_list
* entry
;
9957 static struct section_list
* last_entry
= NULL
;
9959 /* This is a short cut for the typical case where the sections are added
9960 to the sections_with_arm_elf_section_data list in forward order and
9961 then looked up here in backwards order. This makes a real difference
9962 to the ld-srec/sec64k.exp linker test. */
9963 entry
= sections_with_arm_elf_section_data
;
9964 if (last_entry
!= NULL
)
9966 if (last_entry
->sec
== sec
)
9968 else if (last_entry
->next
!= NULL
9969 && last_entry
->next
->sec
== sec
)
9970 entry
= last_entry
->next
;
9973 for (; entry
; entry
= entry
->next
)
9974 if (entry
->sec
== sec
)
9978 /* Record the entry prior to this one - it is the entry we are most
9979 likely to want to locate next time. Also this way if we have been
9980 called from unrecord_section_with_arm_elf_section_data() we will not
9981 be caching a pointer that is about to be freed. */
9982 last_entry
= entry
->prev
;
9987 static _arm_elf_section_data
*
9988 get_arm_elf_section_data (asection
* sec
)
9990 struct section_list
* entry
;
9992 entry
= find_arm_elf_section_entry (sec
);
9995 return elf32_arm_section_data (entry
->sec
);
10001 unrecord_section_with_arm_elf_section_data (asection
* sec
)
10003 struct section_list
* entry
;
10005 entry
= find_arm_elf_section_entry (sec
);
10009 if (entry
->prev
!= NULL
)
10010 entry
->prev
->next
= entry
->next
;
10011 if (entry
->next
!= NULL
)
10012 entry
->next
->prev
= entry
->prev
;
10013 if (entry
== sections_with_arm_elf_section_data
)
10014 sections_with_arm_elf_section_data
= entry
->next
;
10023 struct bfd_link_info
*info
;
10025 bfd_vma plt_offset
;
10026 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
10027 asection
*, struct elf_link_hash_entry
*);
10028 } output_arch_syminfo
;
10030 enum map_symbol_type
10038 /* Output a single PLT mapping symbol. */
10041 elf32_arm_ouput_plt_map_sym (output_arch_syminfo
*osi
,
10042 enum map_symbol_type type
,
10045 static const char *names
[3] = {"$a", "$t", "$d"};
10046 struct elf32_arm_link_hash_table
*htab
;
10047 Elf_Internal_Sym sym
;
10049 htab
= elf32_arm_hash_table (osi
->info
);
10050 sym
.st_value
= osi
->plt_offset
+ offset
;
10053 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
10054 sym
.st_shndx
= osi
->plt_shndx
;
10055 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, htab
->splt
, NULL
))
10061 /* Output mapping symbols for PLT entries associated with H. */
10064 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
10066 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
10067 struct elf32_arm_link_hash_table
*htab
;
10068 struct elf32_arm_link_hash_entry
*eh
;
10071 htab
= elf32_arm_hash_table (osi
->info
);
10073 if (h
->root
.type
== bfd_link_hash_indirect
)
10076 if (h
->root
.type
== bfd_link_hash_warning
)
10077 /* When warning symbols are created, they **replace** the "real"
10078 entry in the hash table, thus we never get to see the real
10079 symbol in a hash traversal. So look at it now. */
10080 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10082 if (h
->plt
.offset
== (bfd_vma
) -1)
10085 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10086 addr
= h
->plt
.offset
;
10087 if (htab
->symbian_p
)
10089 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
10091 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
10094 else if (htab
->vxworks_p
)
10096 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
10098 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
10100 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
10102 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
10107 bfd_boolean thumb_stub
;
10109 thumb_stub
= eh
->plt_thumb_refcount
> 0 && !htab
->use_blx
;
10112 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
10115 #ifdef FOUR_WORD_PLT
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
+ 12))
10121 /* A three-word PLT with no Thumb thunk contains only Arm code,
10122 so only need to output a mapping symbol for the first PLT entry and
10123 entries with thumb thunks. */
10124 if (thumb_stub
|| addr
== 20)
10126 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
10136 /* Output mapping symbols for the PLT. */
10139 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
10140 struct bfd_link_info
*info
,
10141 void *finfo
, bfd_boolean (*func
) (void *, const char *,
10142 Elf_Internal_Sym
*,
10144 struct elf_link_hash_entry
*))
10146 output_arch_syminfo osi
;
10147 struct elf32_arm_link_hash_table
*htab
;
10149 htab
= elf32_arm_hash_table (info
);
10150 if (!htab
->splt
|| htab
->splt
->size
== 0)
10153 check_use_blx(htab
);
10157 osi
.plt_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
10158 htab
->splt
->output_section
);
10159 osi
.plt_offset
= htab
->splt
->output_section
->vma
;
10161 /* Output mapping symbols for the plt header. SymbianOS does not have a
10163 if (htab
->vxworks_p
)
10165 /* VxWorks shared libraries have no PLT header. */
10168 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
10170 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 12))
10174 else if (!htab
->symbian_p
)
10176 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
10178 #ifndef FOUR_WORD_PLT
10179 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 16))
10184 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
10188 /* Allocate target specific section data. */
10191 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
10193 if (!sec
->used_by_bfd
)
10195 _arm_elf_section_data
*sdata
;
10196 bfd_size_type amt
= sizeof (*sdata
);
10198 sdata
= bfd_zalloc (abfd
, amt
);
10201 sec
->used_by_bfd
= sdata
;
10204 record_section_with_arm_elf_section_data (sec
);
10206 return _bfd_elf_new_section_hook (abfd
, sec
);
10210 /* Used to order a list of mapping symbols by address. */
10213 elf32_arm_compare_mapping (const void * a
, const void * b
)
10215 return ((const elf32_arm_section_map
*) a
)->vma
10216 > ((const elf32_arm_section_map
*) b
)->vma
;
10220 /* Do code byteswapping. Return FALSE afterwards so that the section is
10221 written out as normal. */
10224 elf32_arm_write_section (bfd
*output_bfd
,
10225 struct bfd_link_info
*link_info
, asection
*sec
,
10226 bfd_byte
*contents
)
10228 int mapcount
, errcount
;
10229 _arm_elf_section_data
*arm_data
;
10230 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
10231 elf32_arm_section_map
*map
;
10232 elf32_vfp11_erratum_list
*errnode
;
10235 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
10239 /* If this section has not been allocated an _arm_elf_section_data
10240 structure then we cannot record anything. */
10241 arm_data
= get_arm_elf_section_data (sec
);
10242 if (arm_data
== NULL
)
10245 mapcount
= arm_data
->mapcount
;
10246 map
= arm_data
->map
;
10247 errcount
= arm_data
->erratumcount
;
10251 unsigned int endianflip
= bfd_big_endian (output_bfd
) ? 3 : 0;
10253 for (errnode
= arm_data
->erratumlist
; errnode
!= 0;
10254 errnode
= errnode
->next
)
10256 bfd_vma index
= errnode
->vma
- offset
;
10258 switch (errnode
->type
)
10260 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
10262 bfd_vma branch_to_veneer
;
10263 /* Original condition code of instruction, plus bit mask for
10264 ARM B instruction. */
10265 unsigned int insn
= (errnode
->u
.b
.vfp_insn
& 0xf0000000)
10268 /* The instruction is before the label. */
10271 /* Above offset included in -4 below. */
10272 branch_to_veneer
= errnode
->u
.b
.veneer
->vma
10273 - errnode
->vma
- 4;
10275 if ((signed) branch_to_veneer
< -(1 << 25)
10276 || (signed) branch_to_veneer
>= (1 << 25))
10277 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
10278 "range"), output_bfd
);
10280 insn
|= (branch_to_veneer
>> 2) & 0xffffff;
10281 contents
[endianflip
^ index
] = insn
& 0xff;
10282 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
10283 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
10284 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
10288 case VFP11_ERRATUM_ARM_VENEER
:
10290 bfd_vma branch_from_veneer
;
10293 /* Take size of veneer into account. */
10294 branch_from_veneer
= errnode
->u
.v
.branch
->vma
10295 - errnode
->vma
- 12;
10297 if ((signed) branch_from_veneer
< -(1 << 25)
10298 || (signed) branch_from_veneer
>= (1 << 25))
10299 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
10300 "range"), output_bfd
);
10302 /* Original instruction. */
10303 insn
= errnode
->u
.v
.branch
->u
.b
.vfp_insn
;
10304 contents
[endianflip
^ index
] = insn
& 0xff;
10305 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
10306 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
10307 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
10309 /* Branch back to insn after original insn. */
10310 insn
= 0xea000000 | ((branch_from_veneer
>> 2) & 0xffffff);
10311 contents
[endianflip
^ (index
+ 4)] = insn
& 0xff;
10312 contents
[endianflip
^ (index
+ 5)] = (insn
>> 8) & 0xff;
10313 contents
[endianflip
^ (index
+ 6)] = (insn
>> 16) & 0xff;
10314 contents
[endianflip
^ (index
+ 7)] = (insn
>> 24) & 0xff;
10327 if (globals
->byteswap_code
)
10329 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
10332 for (i
= 0; i
< mapcount
; i
++)
10334 if (i
== mapcount
- 1)
10337 end
= map
[i
+ 1].vma
;
10339 switch (map
[i
].type
)
10342 /* Byte swap code words. */
10343 while (ptr
+ 3 < end
)
10345 tmp
= contents
[ptr
];
10346 contents
[ptr
] = contents
[ptr
+ 3];
10347 contents
[ptr
+ 3] = tmp
;
10348 tmp
= contents
[ptr
+ 1];
10349 contents
[ptr
+ 1] = contents
[ptr
+ 2];
10350 contents
[ptr
+ 2] = tmp
;
10356 /* Byte swap code halfwords. */
10357 while (ptr
+ 1 < end
)
10359 tmp
= contents
[ptr
];
10360 contents
[ptr
] = contents
[ptr
+ 1];
10361 contents
[ptr
+ 1] = tmp
;
10367 /* Leave data alone. */
10375 arm_data
->mapcount
= 0;
10376 arm_data
->mapsize
= 0;
10377 arm_data
->map
= NULL
;
10378 unrecord_section_with_arm_elf_section_data (sec
);
10384 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
10386 void * ignore ATTRIBUTE_UNUSED
)
10388 unrecord_section_with_arm_elf_section_data (sec
);
10392 elf32_arm_close_and_cleanup (bfd
* abfd
)
10394 if (abfd
->sections
)
10395 bfd_map_over_sections (abfd
,
10396 unrecord_section_via_map_over_sections
,
10399 return _bfd_elf_close_and_cleanup (abfd
);
10403 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
10405 if (abfd
->sections
)
10406 bfd_map_over_sections (abfd
,
10407 unrecord_section_via_map_over_sections
,
10410 return _bfd_free_cached_info (abfd
);
10413 /* Display STT_ARM_TFUNC symbols as functions. */
10416 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
10419 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
10421 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
10422 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
10426 /* Mangle thumb function symbols as we read them in. */
10429 elf32_arm_swap_symbol_in (bfd
* abfd
,
10432 Elf_Internal_Sym
*dst
)
10434 if (!bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
10437 /* New EABI objects mark thumb function symbols by setting the low bit of
10438 the address. Turn these into STT_ARM_TFUNC. */
10439 if (ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
10440 && (dst
->st_value
& 1))
10442 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
10443 dst
->st_value
&= ~(bfd_vma
) 1;
10449 /* Mangle thumb function symbols as we write them out. */
10452 elf32_arm_swap_symbol_out (bfd
*abfd
,
10453 const Elf_Internal_Sym
*src
,
10457 Elf_Internal_Sym newsym
;
10459 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
10460 of the address set, as per the new EABI. We do this unconditionally
10461 because objcopy does not set the elf header flags until after
10462 it writes out the symbol table. */
10463 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
10466 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
10467 if (newsym
.st_shndx
!= SHN_UNDEF
)
10469 /* Do this only for defined symbols. At link type, the static
10470 linker will simulate the work of dynamic linker of resolving
10471 symbols and will carry over the thumbness of found symbols to
10472 the output symbol table. It's not clear how it happens, but
10473 the thumbness of undefined symbols can well be different at
10474 runtime, and writing '1' for them will be confusing for users
10475 and possibly for dynamic linker itself.
10477 newsym
.st_value
|= 1;
10482 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
10485 /* Add the PT_ARM_EXIDX program header. */
10488 elf32_arm_modify_segment_map (bfd
*abfd
,
10489 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
10491 struct elf_segment_map
*m
;
10494 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
10495 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
10497 /* If there is already a PT_ARM_EXIDX header, then we do not
10498 want to add another one. This situation arises when running
10499 "strip"; the input binary already has the header. */
10500 m
= elf_tdata (abfd
)->segment_map
;
10501 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
10505 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
10508 m
->p_type
= PT_ARM_EXIDX
;
10510 m
->sections
[0] = sec
;
10512 m
->next
= elf_tdata (abfd
)->segment_map
;
10513 elf_tdata (abfd
)->segment_map
= m
;
10520 /* We may add a PT_ARM_EXIDX program header. */
10523 elf32_arm_additional_program_headers (bfd
*abfd
,
10524 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
10528 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
10529 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
10535 /* We use this to override swap_symbol_in and swap_symbol_out. */
10536 const struct elf_size_info elf32_arm_size_info
= {
10537 sizeof (Elf32_External_Ehdr
),
10538 sizeof (Elf32_External_Phdr
),
10539 sizeof (Elf32_External_Shdr
),
10540 sizeof (Elf32_External_Rel
),
10541 sizeof (Elf32_External_Rela
),
10542 sizeof (Elf32_External_Sym
),
10543 sizeof (Elf32_External_Dyn
),
10544 sizeof (Elf_External_Note
),
10548 ELFCLASS32
, EV_CURRENT
,
10549 bfd_elf32_write_out_phdrs
,
10550 bfd_elf32_write_shdrs_and_ehdr
,
10551 bfd_elf32_write_relocs
,
10552 elf32_arm_swap_symbol_in
,
10553 elf32_arm_swap_symbol_out
,
10554 bfd_elf32_slurp_reloc_table
,
10555 bfd_elf32_slurp_symbol_table
,
10556 bfd_elf32_swap_dyn_in
,
10557 bfd_elf32_swap_dyn_out
,
10558 bfd_elf32_swap_reloc_in
,
10559 bfd_elf32_swap_reloc_out
,
10560 bfd_elf32_swap_reloca_in
,
10561 bfd_elf32_swap_reloca_out
10564 #define ELF_ARCH bfd_arch_arm
10565 #define ELF_MACHINE_CODE EM_ARM
10566 #ifdef __QNXTARGET__
10567 #define ELF_MAXPAGESIZE 0x1000
10569 #define ELF_MAXPAGESIZE 0x8000
10571 #define ELF_MINPAGESIZE 0x1000
10572 #define ELF_COMMONPAGESIZE 0x1000
10574 #define bfd_elf32_mkobject elf32_arm_mkobject
10576 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
10577 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
10578 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
10579 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
10580 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
10581 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
10582 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
10583 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
10584 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
10585 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
10586 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
10587 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
10588 #define bfd_elf32_bfd_final_link elf32_arm_bfd_final_link
10590 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
10591 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
10592 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
10593 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
10594 #define elf_backend_check_relocs elf32_arm_check_relocs
10595 #define elf_backend_relocate_section elf32_arm_relocate_section
10596 #define elf_backend_write_section elf32_arm_write_section
10597 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
10598 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
10599 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
10600 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
10601 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
10602 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
10603 #define elf_backend_post_process_headers elf32_arm_post_process_headers
10604 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
10605 #define elf_backend_object_p elf32_arm_object_p
10606 #define elf_backend_section_flags elf32_arm_section_flags
10607 #define elf_backend_fake_sections elf32_arm_fake_sections
10608 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
10609 #define elf_backend_final_write_processing elf32_arm_final_write_processing
10610 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
10611 #define elf_backend_symbol_processing elf32_arm_symbol_processing
10612 #define elf_backend_size_info elf32_arm_size_info
10613 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
10614 #define elf_backend_additional_program_headers \
10615 elf32_arm_additional_program_headers
10616 #define elf_backend_output_arch_local_syms \
10617 elf32_arm_output_arch_local_syms
10618 #define elf_backend_begin_write_processing \
10619 elf32_arm_begin_write_processing
10621 #define elf_backend_can_refcount 1
10622 #define elf_backend_can_gc_sections 1
10623 #define elf_backend_plt_readonly 1
10624 #define elf_backend_want_got_plt 1
10625 #define elf_backend_want_plt_sym 0
10626 #define elf_backend_may_use_rel_p 1
10627 #define elf_backend_may_use_rela_p 0
10628 #define elf_backend_default_use_rela_p 0
10630 #define elf_backend_got_header_size 12
10632 #include "elf32-target.h"
10634 /* VxWorks Targets */
10636 #undef TARGET_LITTLE_SYM
10637 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
10638 #undef TARGET_LITTLE_NAME
10639 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
10640 #undef TARGET_BIG_SYM
10641 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
10642 #undef TARGET_BIG_NAME
10643 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
10645 /* Like elf32_arm_link_hash_table_create -- but overrides
10646 appropriately for VxWorks. */
10647 static struct bfd_link_hash_table
*
10648 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
10650 struct bfd_link_hash_table
*ret
;
10652 ret
= elf32_arm_link_hash_table_create (abfd
);
10655 struct elf32_arm_link_hash_table
*htab
10656 = (struct elf32_arm_link_hash_table
*) ret
;
10658 htab
->vxworks_p
= 1;
10664 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10666 elf32_arm_final_write_processing (abfd
, linker
);
10667 elf_vxworks_final_write_processing (abfd
, linker
);
10671 #define elf32_bed elf32_arm_vxworks_bed
10673 #undef bfd_elf32_bfd_link_hash_table_create
10674 #define bfd_elf32_bfd_link_hash_table_create \
10675 elf32_arm_vxworks_link_hash_table_create
10676 #undef elf_backend_add_symbol_hook
10677 #define elf_backend_add_symbol_hook \
10678 elf_vxworks_add_symbol_hook
10679 #undef elf_backend_final_write_processing
10680 #define elf_backend_final_write_processing \
10681 elf32_arm_vxworks_final_write_processing
10682 #undef elf_backend_emit_relocs
10683 #define elf_backend_emit_relocs \
10684 elf_vxworks_emit_relocs
10686 #undef elf_backend_may_use_rel_p
10687 #define elf_backend_may_use_rel_p 0
10688 #undef elf_backend_may_use_rela_p
10689 #define elf_backend_may_use_rela_p 1
10690 #undef elf_backend_default_use_rela_p
10691 #define elf_backend_default_use_rela_p 1
10692 #undef elf_backend_want_plt_sym
10693 #define elf_backend_want_plt_sym 1
10694 #undef ELF_MAXPAGESIZE
10695 #define ELF_MAXPAGESIZE 0x1000
10697 #include "elf32-target.h"
10700 /* Symbian OS Targets */
10702 #undef TARGET_LITTLE_SYM
10703 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
10704 #undef TARGET_LITTLE_NAME
10705 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
10706 #undef TARGET_BIG_SYM
10707 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
10708 #undef TARGET_BIG_NAME
10709 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
10711 /* Like elf32_arm_link_hash_table_create -- but overrides
10712 appropriately for Symbian OS. */
10713 static struct bfd_link_hash_table
*
10714 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
10716 struct bfd_link_hash_table
*ret
;
10718 ret
= elf32_arm_link_hash_table_create (abfd
);
10721 struct elf32_arm_link_hash_table
*htab
10722 = (struct elf32_arm_link_hash_table
*)ret
;
10723 /* There is no PLT header for Symbian OS. */
10724 htab
->plt_header_size
= 0;
10725 /* The PLT entries are each three instructions. */
10726 htab
->plt_entry_size
= 4 * NUM_ELEM (elf32_arm_symbian_plt_entry
);
10727 htab
->symbian_p
= 1;
10728 /* Symbian uses armv5t or above, so use_blx is always true. */
10730 htab
->root
.is_relocatable_executable
= 1;
10735 static const struct bfd_elf_special_section
10736 elf32_arm_symbian_special_sections
[] =
10738 /* In a BPABI executable, the dynamic linking sections do not go in
10739 the loadable read-only segment. The post-linker may wish to
10740 refer to these sections, but they are not part of the final
10742 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC
, 0 },
10743 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB
, 0 },
10744 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM
, 0 },
10745 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS
, 0 },
10746 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH
, 0 },
10747 /* These sections do not need to be writable as the SymbianOS
10748 postlinker will arrange things so that no dynamic relocation is
10750 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
10751 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
10752 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
10753 { NULL
, 0, 0, 0, 0 }
10757 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
10758 struct bfd_link_info
*link_info
)
10760 /* BPABI objects are never loaded directly by an OS kernel; they are
10761 processed by a postlinker first, into an OS-specific format. If
10762 the D_PAGED bit is set on the file, BFD will align segments on
10763 page boundaries, so that an OS can directly map the file. With
10764 BPABI objects, that just results in wasted space. In addition,
10765 because we clear the D_PAGED bit, map_sections_to_segments will
10766 recognize that the program headers should not be mapped into any
10767 loadable segment. */
10768 abfd
->flags
&= ~D_PAGED
;
10769 elf32_arm_begin_write_processing(abfd
, link_info
);
10773 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
10774 struct bfd_link_info
*info
)
10776 struct elf_segment_map
*m
;
10779 /* BPABI shared libraries and executables should have a PT_DYNAMIC
10780 segment. However, because the .dynamic section is not marked
10781 with SEC_LOAD, the generic ELF code will not create such a
10783 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
10786 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
10787 if (m
->p_type
== PT_DYNAMIC
)
10792 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
10793 m
->next
= elf_tdata (abfd
)->segment_map
;
10794 elf_tdata (abfd
)->segment_map
= m
;
10798 /* Also call the generic arm routine. */
10799 return elf32_arm_modify_segment_map (abfd
, info
);
10803 #define elf32_bed elf32_arm_symbian_bed
10805 /* The dynamic sections are not allocated on SymbianOS; the postlinker
10806 will process them and then discard them. */
10807 #undef ELF_DYNAMIC_SEC_FLAGS
10808 #define ELF_DYNAMIC_SEC_FLAGS \
10809 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
10811 #undef bfd_elf32_bfd_link_hash_table_create
10812 #define bfd_elf32_bfd_link_hash_table_create \
10813 elf32_arm_symbian_link_hash_table_create
10814 #undef elf_backend_add_symbol_hook
10816 #undef elf_backend_special_sections
10817 #define elf_backend_special_sections elf32_arm_symbian_special_sections
10819 #undef elf_backend_begin_write_processing
10820 #define elf_backend_begin_write_processing \
10821 elf32_arm_symbian_begin_write_processing
10822 #undef elf_backend_final_write_processing
10823 #define elf_backend_final_write_processing \
10824 elf32_arm_final_write_processing
10825 #undef elf_backend_emit_relocs
10827 #undef elf_backend_modify_segment_map
10828 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
10830 /* There is no .got section for BPABI objects, and hence no header. */
10831 #undef elf_backend_got_header_size
10832 #define elf_backend_got_header_size 0
10834 /* Similarly, there is no .got.plt section. */
10835 #undef elf_backend_want_got_plt
10836 #define elf_backend_want_got_plt 0
10838 #undef elf_backend_may_use_rel_p
10839 #define elf_backend_may_use_rel_p 1
10840 #undef elf_backend_may_use_rela_p
10841 #define elf_backend_may_use_rela_p 0
10842 #undef elf_backend_default_use_rela_p
10843 #define elf_backend_default_use_rela_p 0
10844 #undef elf_backend_want_plt_sym
10845 #define elf_backend_want_plt_sym 0
10846 #undef ELF_MAXPAGESIZE
10847 #define ELF_MAXPAGESIZE 0x8000
10849 #include "elf32-target.h"