1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
23 #include "libiberty.h"
26 #include "elf-vxworks.h"
30 #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
33 /* Return the relocation section associated with NAME. HTAB is the
34 bfd's elf32_arm_link_hash_entry. */
35 #define RELOC_SECTION(HTAB, NAME) \
36 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
38 /* Return size of a relocation entry. HTAB is the bfd's
39 elf32_arm_link_hash_entry. */
40 #define RELOC_SIZE(HTAB) \
42 ? sizeof (Elf32_External_Rel) \
43 : sizeof (Elf32_External_Rela))
45 /* Return function to swap relocations in. HTAB is the bfd's
46 elf32_arm_link_hash_entry. */
47 #define SWAP_RELOC_IN(HTAB) \
49 ? bfd_elf32_swap_reloc_in \
50 : bfd_elf32_swap_reloca_in)
52 /* Return function to swap relocations out. HTAB is the bfd's
53 elf32_arm_link_hash_entry. */
54 #define SWAP_RELOC_OUT(HTAB) \
56 ? bfd_elf32_swap_reloc_out \
57 : bfd_elf32_swap_reloca_out)
59 #define elf_info_to_howto 0
60 #define elf_info_to_howto_rel elf32_arm_info_to_howto
62 #define ARM_ELF_ABI_VERSION 0
63 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
65 static struct elf_backend_data elf32_arm_vxworks_bed;
67 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
68 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
71 static reloc_howto_type elf32_arm_howto_table_1[] =
74 HOWTO (R_ARM_NONE, /* type */
76 0, /* size (0 = byte, 1 = short, 2 = long) */
78 FALSE, /* pc_relative */
80 complain_overflow_dont,/* complain_on_overflow */
81 bfd_elf_generic_reloc, /* special_function */
82 "R_ARM_NONE", /* name */
83 FALSE, /* partial_inplace */
86 FALSE), /* pcrel_offset */
88 HOWTO (R_ARM_PC24, /* type */
90 2, /* size (0 = byte, 1 = short, 2 = long) */
92 TRUE, /* pc_relative */
94 complain_overflow_signed,/* complain_on_overflow */
95 bfd_elf_generic_reloc, /* special_function */
96 "R_ARM_PC24", /* name */
97 FALSE, /* partial_inplace */
98 0x00ffffff, /* src_mask */
99 0x00ffffff, /* dst_mask */
100 TRUE), /* pcrel_offset */
102 /* 32 bit absolute */
103 HOWTO (R_ARM_ABS32, /* type */
105 2, /* size (0 = byte, 1 = short, 2 = long) */
107 FALSE, /* pc_relative */
109 complain_overflow_bitfield,/* complain_on_overflow */
110 bfd_elf_generic_reloc, /* special_function */
111 "R_ARM_ABS32", /* name */
112 FALSE, /* partial_inplace */
113 0xffffffff, /* src_mask */
114 0xffffffff, /* dst_mask */
115 FALSE), /* pcrel_offset */
117 /* standard 32bit pc-relative reloc */
118 HOWTO (R_ARM_REL32, /* type */
120 2, /* size (0 = byte, 1 = short, 2 = long) */
122 TRUE, /* pc_relative */
124 complain_overflow_bitfield,/* complain_on_overflow */
125 bfd_elf_generic_reloc, /* special_function */
126 "R_ARM_REL32", /* name */
127 FALSE, /* partial_inplace */
128 0xffffffff, /* src_mask */
129 0xffffffff, /* dst_mask */
130 TRUE), /* pcrel_offset */
132 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
133 HOWTO (R_ARM_LDR_PC_G0, /* type */
135 0, /* size (0 = byte, 1 = short, 2 = long) */
137 TRUE, /* pc_relative */
139 complain_overflow_dont,/* complain_on_overflow */
140 bfd_elf_generic_reloc, /* special_function */
141 "R_ARM_LDR_PC_G0", /* name */
142 FALSE, /* partial_inplace */
143 0xffffffff, /* src_mask */
144 0xffffffff, /* dst_mask */
145 TRUE), /* pcrel_offset */
147 /* 16 bit absolute */
148 HOWTO (R_ARM_ABS16, /* type */
150 1, /* size (0 = byte, 1 = short, 2 = long) */
152 FALSE, /* pc_relative */
154 complain_overflow_bitfield,/* complain_on_overflow */
155 bfd_elf_generic_reloc, /* special_function */
156 "R_ARM_ABS16", /* name */
157 FALSE, /* partial_inplace */
158 0x0000ffff, /* src_mask */
159 0x0000ffff, /* dst_mask */
160 FALSE), /* pcrel_offset */
162 /* 12 bit absolute */
163 HOWTO (R_ARM_ABS12, /* type */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
167 FALSE, /* pc_relative */
169 complain_overflow_bitfield,/* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_ARM_ABS12", /* name */
172 FALSE, /* partial_inplace */
173 0x00000fff, /* src_mask */
174 0x00000fff, /* dst_mask */
175 FALSE), /* pcrel_offset */
177 HOWTO (R_ARM_THM_ABS5, /* type */
179 1, /* size (0 = byte, 1 = short, 2 = long) */
181 FALSE, /* pc_relative */
183 complain_overflow_bitfield,/* complain_on_overflow */
184 bfd_elf_generic_reloc, /* special_function */
185 "R_ARM_THM_ABS5", /* name */
186 FALSE, /* partial_inplace */
187 0x000007e0, /* src_mask */
188 0x000007e0, /* dst_mask */
189 FALSE), /* pcrel_offset */
192 HOWTO (R_ARM_ABS8, /* type */
194 0, /* size (0 = byte, 1 = short, 2 = long) */
196 FALSE, /* pc_relative */
198 complain_overflow_bitfield,/* complain_on_overflow */
199 bfd_elf_generic_reloc, /* special_function */
200 "R_ARM_ABS8", /* name */
201 FALSE, /* partial_inplace */
202 0x000000ff, /* src_mask */
203 0x000000ff, /* dst_mask */
204 FALSE), /* pcrel_offset */
206 HOWTO (R_ARM_SBREL32, /* type */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
210 FALSE, /* pc_relative */
212 complain_overflow_dont,/* complain_on_overflow */
213 bfd_elf_generic_reloc, /* special_function */
214 "R_ARM_SBREL32", /* name */
215 FALSE, /* partial_inplace */
216 0xffffffff, /* src_mask */
217 0xffffffff, /* dst_mask */
218 FALSE), /* pcrel_offset */
220 HOWTO (R_ARM_THM_CALL, /* type */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
224 TRUE, /* pc_relative */
226 complain_overflow_signed,/* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_ARM_THM_CALL", /* name */
229 FALSE, /* partial_inplace */
230 0x07ff07ff, /* src_mask */
231 0x07ff07ff, /* dst_mask */
232 TRUE), /* pcrel_offset */
234 HOWTO (R_ARM_THM_PC8, /* type */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
238 TRUE, /* pc_relative */
240 complain_overflow_signed,/* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_ARM_THM_PC8", /* name */
243 FALSE, /* partial_inplace */
244 0x000000ff, /* src_mask */
245 0x000000ff, /* dst_mask */
246 TRUE), /* pcrel_offset */
248 HOWTO (R_ARM_BREL_ADJ, /* type */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
252 FALSE, /* pc_relative */
254 complain_overflow_signed,/* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_ARM_BREL_ADJ", /* name */
257 FALSE, /* partial_inplace */
258 0xffffffff, /* src_mask */
259 0xffffffff, /* dst_mask */
260 FALSE), /* pcrel_offset */
262 HOWTO (R_ARM_SWI24, /* type */
264 0, /* size (0 = byte, 1 = short, 2 = long) */
266 FALSE, /* pc_relative */
268 complain_overflow_signed,/* complain_on_overflow */
269 bfd_elf_generic_reloc, /* special_function */
270 "R_ARM_SWI24", /* name */
271 FALSE, /* partial_inplace */
272 0x00000000, /* src_mask */
273 0x00000000, /* dst_mask */
274 FALSE), /* pcrel_offset */
276 HOWTO (R_ARM_THM_SWI8, /* type */
278 0, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_signed,/* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_ARM_SWI8", /* name */
285 FALSE, /* partial_inplace */
286 0x00000000, /* src_mask */
287 0x00000000, /* dst_mask */
288 FALSE), /* pcrel_offset */
290 /* BLX instruction for the ARM. */
291 HOWTO (R_ARM_XPC25, /* type */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
295 TRUE, /* pc_relative */
297 complain_overflow_signed,/* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_ARM_XPC25", /* name */
300 FALSE, /* partial_inplace */
301 0x00ffffff, /* src_mask */
302 0x00ffffff, /* dst_mask */
303 TRUE), /* pcrel_offset */
305 /* BLX instruction for the Thumb. */
306 HOWTO (R_ARM_THM_XPC22, /* type */
308 2, /* size (0 = byte, 1 = short, 2 = long) */
310 TRUE, /* pc_relative */
312 complain_overflow_signed,/* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_ARM_THM_XPC22", /* name */
315 FALSE, /* partial_inplace */
316 0x07ff07ff, /* src_mask */
317 0x07ff07ff, /* dst_mask */
318 TRUE), /* pcrel_offset */
320 /* Dynamic TLS relocations. */
322 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_bitfield,/* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_ARM_TLS_DTPMOD32", /* name */
331 TRUE, /* partial_inplace */
332 0xffffffff, /* src_mask */
333 0xffffffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
340 FALSE, /* pc_relative */
342 complain_overflow_bitfield,/* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_ARM_TLS_DTPOFF32", /* name */
345 TRUE, /* partial_inplace */
346 0xffffffff, /* src_mask */
347 0xffffffff, /* dst_mask */
348 FALSE), /* pcrel_offset */
350 HOWTO (R_ARM_TLS_TPOFF32, /* type */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
354 FALSE, /* pc_relative */
356 complain_overflow_bitfield,/* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_ARM_TLS_TPOFF32", /* name */
359 TRUE, /* partial_inplace */
360 0xffffffff, /* src_mask */
361 0xffffffff, /* dst_mask */
362 FALSE), /* pcrel_offset */
364 /* Relocs used in ARM Linux */
366 HOWTO (R_ARM_COPY, /* type */
368 2, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE, /* pc_relative */
372 complain_overflow_bitfield,/* complain_on_overflow */
373 bfd_elf_generic_reloc, /* special_function */
374 "R_ARM_COPY", /* name */
375 TRUE, /* partial_inplace */
376 0xffffffff, /* src_mask */
377 0xffffffff, /* dst_mask */
378 FALSE), /* pcrel_offset */
380 HOWTO (R_ARM_GLOB_DAT, /* type */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
384 FALSE, /* pc_relative */
386 complain_overflow_bitfield,/* complain_on_overflow */
387 bfd_elf_generic_reloc, /* special_function */
388 "R_ARM_GLOB_DAT", /* name */
389 TRUE, /* partial_inplace */
390 0xffffffff, /* src_mask */
391 0xffffffff, /* dst_mask */
392 FALSE), /* pcrel_offset */
394 HOWTO (R_ARM_JUMP_SLOT, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 FALSE, /* pc_relative */
400 complain_overflow_bitfield,/* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_ARM_JUMP_SLOT", /* name */
403 TRUE, /* partial_inplace */
404 0xffffffff, /* src_mask */
405 0xffffffff, /* dst_mask */
406 FALSE), /* pcrel_offset */
408 HOWTO (R_ARM_RELATIVE, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 FALSE, /* pc_relative */
414 complain_overflow_bitfield,/* complain_on_overflow */
415 bfd_elf_generic_reloc, /* special_function */
416 "R_ARM_RELATIVE", /* name */
417 TRUE, /* partial_inplace */
418 0xffffffff, /* src_mask */
419 0xffffffff, /* dst_mask */
420 FALSE), /* pcrel_offset */
422 HOWTO (R_ARM_GOTOFF32, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE, /* pc_relative */
428 complain_overflow_bitfield,/* complain_on_overflow */
429 bfd_elf_generic_reloc, /* special_function */
430 "R_ARM_GOTOFF32", /* name */
431 TRUE, /* partial_inplace */
432 0xffffffff, /* src_mask */
433 0xffffffff, /* dst_mask */
434 FALSE), /* pcrel_offset */
436 HOWTO (R_ARM_GOTPC, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE, /* pc_relative */
442 complain_overflow_bitfield,/* complain_on_overflow */
443 bfd_elf_generic_reloc, /* special_function */
444 "R_ARM_GOTPC", /* name */
445 TRUE, /* partial_inplace */
446 0xffffffff, /* src_mask */
447 0xffffffff, /* dst_mask */
448 TRUE), /* pcrel_offset */
450 HOWTO (R_ARM_GOT32, /* type */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE, /* pc_relative */
456 complain_overflow_bitfield,/* complain_on_overflow */
457 bfd_elf_generic_reloc, /* special_function */
458 "R_ARM_GOT32", /* name */
459 TRUE, /* partial_inplace */
460 0xffffffff, /* src_mask */
461 0xffffffff, /* dst_mask */
462 FALSE), /* pcrel_offset */
464 HOWTO (R_ARM_PLT32, /* type */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
468 TRUE, /* pc_relative */
470 complain_overflow_bitfield,/* complain_on_overflow */
471 bfd_elf_generic_reloc, /* special_function */
472 "R_ARM_PLT32", /* name */
473 FALSE, /* partial_inplace */
474 0x00ffffff, /* src_mask */
475 0x00ffffff, /* dst_mask */
476 TRUE), /* pcrel_offset */
478 HOWTO (R_ARM_CALL, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 TRUE, /* pc_relative */
484 complain_overflow_signed,/* complain_on_overflow */
485 bfd_elf_generic_reloc, /* special_function */
486 "R_ARM_CALL", /* name */
487 FALSE, /* partial_inplace */
488 0x00ffffff, /* src_mask */
489 0x00ffffff, /* dst_mask */
490 TRUE), /* pcrel_offset */
492 HOWTO (R_ARM_JUMP24, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 TRUE, /* pc_relative */
498 complain_overflow_signed,/* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_ARM_JUMP24", /* name */
501 FALSE, /* partial_inplace */
502 0x00ffffff, /* src_mask */
503 0x00ffffff, /* dst_mask */
504 TRUE), /* pcrel_offset */
506 HOWTO (R_ARM_THM_JUMP24, /* type */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
510 TRUE, /* pc_relative */
512 complain_overflow_signed,/* complain_on_overflow */
513 bfd_elf_generic_reloc, /* special_function */
514 "R_ARM_THM_JUMP24", /* name */
515 FALSE, /* partial_inplace */
516 0x07ff2fff, /* src_mask */
517 0x07ff2fff, /* dst_mask */
518 TRUE), /* pcrel_offset */
520 HOWTO (R_ARM_BASE_ABS, /* type */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
524 FALSE, /* pc_relative */
526 complain_overflow_dont,/* complain_on_overflow */
527 bfd_elf_generic_reloc, /* special_function */
528 "R_ARM_BASE_ABS", /* name */
529 FALSE, /* partial_inplace */
530 0xffffffff, /* src_mask */
531 0xffffffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
534 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
536 2, /* size (0 = byte, 1 = short, 2 = long) */
538 TRUE, /* pc_relative */
540 complain_overflow_dont,/* complain_on_overflow */
541 bfd_elf_generic_reloc, /* special_function */
542 "R_ARM_ALU_PCREL_7_0", /* name */
543 FALSE, /* partial_inplace */
544 0x00000fff, /* src_mask */
545 0x00000fff, /* dst_mask */
546 TRUE), /* pcrel_offset */
548 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
552 TRUE, /* pc_relative */
554 complain_overflow_dont,/* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_ARM_ALU_PCREL_15_8",/* name */
557 FALSE, /* partial_inplace */
558 0x00000fff, /* src_mask */
559 0x00000fff, /* dst_mask */
560 TRUE), /* pcrel_offset */
562 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
564 2, /* size (0 = byte, 1 = short, 2 = long) */
566 TRUE, /* pc_relative */
568 complain_overflow_dont,/* complain_on_overflow */
569 bfd_elf_generic_reloc, /* special_function */
570 "R_ARM_ALU_PCREL_23_15",/* name */
571 FALSE, /* partial_inplace */
572 0x00000fff, /* src_mask */
573 0x00000fff, /* dst_mask */
574 TRUE), /* pcrel_offset */
576 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 FALSE, /* pc_relative */
582 complain_overflow_dont,/* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_ARM_LDR_SBREL_11_0",/* name */
585 FALSE, /* partial_inplace */
586 0x00000fff, /* src_mask */
587 0x00000fff, /* dst_mask */
588 FALSE), /* pcrel_offset */
590 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE, /* pc_relative */
596 complain_overflow_dont,/* complain_on_overflow */
597 bfd_elf_generic_reloc, /* special_function */
598 "R_ARM_ALU_SBREL_19_12",/* name */
599 FALSE, /* partial_inplace */
600 0x000ff000, /* src_mask */
601 0x000ff000, /* dst_mask */
602 FALSE), /* pcrel_offset */
604 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 FALSE, /* pc_relative */
610 complain_overflow_dont,/* complain_on_overflow */
611 bfd_elf_generic_reloc, /* special_function */
612 "R_ARM_ALU_SBREL_27_20",/* name */
613 FALSE, /* partial_inplace */
614 0x0ff00000, /* src_mask */
615 0x0ff00000, /* dst_mask */
616 FALSE), /* pcrel_offset */
618 HOWTO (R_ARM_TARGET1, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE, /* pc_relative */
624 complain_overflow_dont,/* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_ARM_TARGET1", /* name */
627 FALSE, /* partial_inplace */
628 0xffffffff, /* src_mask */
629 0xffffffff, /* dst_mask */
630 FALSE), /* pcrel_offset */
632 HOWTO (R_ARM_ROSEGREL32, /* type */
634 2, /* size (0 = byte, 1 = short, 2 = long) */
636 FALSE, /* pc_relative */
638 complain_overflow_dont,/* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_ARM_ROSEGREL32", /* name */
641 FALSE, /* partial_inplace */
642 0xffffffff, /* src_mask */
643 0xffffffff, /* dst_mask */
644 FALSE), /* pcrel_offset */
646 HOWTO (R_ARM_V4BX, /* type */
648 2, /* size (0 = byte, 1 = short, 2 = long) */
650 FALSE, /* pc_relative */
652 complain_overflow_dont,/* complain_on_overflow */
653 bfd_elf_generic_reloc, /* special_function */
654 "R_ARM_V4BX", /* name */
655 FALSE, /* partial_inplace */
656 0xffffffff, /* src_mask */
657 0xffffffff, /* dst_mask */
658 FALSE), /* pcrel_offset */
660 HOWTO (R_ARM_TARGET2, /* type */
662 2, /* size (0 = byte, 1 = short, 2 = long) */
664 FALSE, /* pc_relative */
666 complain_overflow_signed,/* complain_on_overflow */
667 bfd_elf_generic_reloc, /* special_function */
668 "R_ARM_TARGET2", /* name */
669 FALSE, /* partial_inplace */
670 0xffffffff, /* src_mask */
671 0xffffffff, /* dst_mask */
672 TRUE), /* pcrel_offset */
674 HOWTO (R_ARM_PREL31, /* type */
676 2, /* size (0 = byte, 1 = short, 2 = long) */
678 TRUE, /* pc_relative */
680 complain_overflow_signed,/* complain_on_overflow */
681 bfd_elf_generic_reloc, /* special_function */
682 "R_ARM_PREL31", /* name */
683 FALSE, /* partial_inplace */
684 0x7fffffff, /* src_mask */
685 0x7fffffff, /* dst_mask */
686 TRUE), /* pcrel_offset */
688 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
692 FALSE, /* pc_relative */
694 complain_overflow_dont,/* complain_on_overflow */
695 bfd_elf_generic_reloc, /* special_function */
696 "R_ARM_MOVW_ABS_NC", /* name */
697 FALSE, /* partial_inplace */
698 0x0000ffff, /* src_mask */
699 0x0000ffff, /* dst_mask */
700 FALSE), /* pcrel_offset */
702 HOWTO (R_ARM_MOVT_ABS, /* type */
704 2, /* size (0 = byte, 1 = short, 2 = long) */
706 FALSE, /* pc_relative */
708 complain_overflow_bitfield,/* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_ARM_MOVT_ABS", /* name */
711 FALSE, /* partial_inplace */
712 0x0000ffff, /* src_mask */
713 0x0000ffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
716 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
718 2, /* size (0 = byte, 1 = short, 2 = long) */
720 TRUE, /* pc_relative */
722 complain_overflow_dont,/* complain_on_overflow */
723 bfd_elf_generic_reloc, /* special_function */
724 "R_ARM_MOVW_PREL_NC", /* name */
725 FALSE, /* partial_inplace */
726 0x0000ffff, /* src_mask */
727 0x0000ffff, /* dst_mask */
728 TRUE), /* pcrel_offset */
730 HOWTO (R_ARM_MOVT_PREL, /* type */
732 2, /* size (0 = byte, 1 = short, 2 = long) */
734 TRUE, /* pc_relative */
736 complain_overflow_bitfield,/* complain_on_overflow */
737 bfd_elf_generic_reloc, /* special_function */
738 "R_ARM_MOVT_PREL", /* name */
739 FALSE, /* partial_inplace */
740 0x0000ffff, /* src_mask */
741 0x0000ffff, /* dst_mask */
742 TRUE), /* pcrel_offset */
744 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
746 2, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE, /* pc_relative */
750 complain_overflow_dont,/* complain_on_overflow */
751 bfd_elf_generic_reloc, /* special_function */
752 "R_ARM_THM_MOVW_ABS_NC",/* name */
753 FALSE, /* partial_inplace */
754 0x040f70ff, /* src_mask */
755 0x040f70ff, /* dst_mask */
756 FALSE), /* pcrel_offset */
758 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
760 2, /* size (0 = byte, 1 = short, 2 = long) */
762 FALSE, /* pc_relative */
764 complain_overflow_bitfield,/* complain_on_overflow */
765 bfd_elf_generic_reloc, /* special_function */
766 "R_ARM_THM_MOVT_ABS", /* name */
767 FALSE, /* partial_inplace */
768 0x040f70ff, /* src_mask */
769 0x040f70ff, /* dst_mask */
770 FALSE), /* pcrel_offset */
772 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
774 2, /* size (0 = byte, 1 = short, 2 = long) */
776 TRUE, /* pc_relative */
778 complain_overflow_dont,/* complain_on_overflow */
779 bfd_elf_generic_reloc, /* special_function */
780 "R_ARM_THM_MOVW_PREL_NC",/* name */
781 FALSE, /* partial_inplace */
782 0x040f70ff, /* src_mask */
783 0x040f70ff, /* dst_mask */
784 TRUE), /* pcrel_offset */
786 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
788 2, /* size (0 = byte, 1 = short, 2 = long) */
790 TRUE, /* pc_relative */
792 complain_overflow_bitfield,/* complain_on_overflow */
793 bfd_elf_generic_reloc, /* special_function */
794 "R_ARM_THM_MOVT_PREL", /* name */
795 FALSE, /* partial_inplace */
796 0x040f70ff, /* src_mask */
797 0x040f70ff, /* dst_mask */
798 TRUE), /* pcrel_offset */
800 HOWTO (R_ARM_THM_JUMP19, /* type */
802 2, /* size (0 = byte, 1 = short, 2 = long) */
804 TRUE, /* pc_relative */
806 complain_overflow_signed,/* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_ARM_THM_JUMP19", /* name */
809 FALSE, /* partial_inplace */
810 0x043f2fff, /* src_mask */
811 0x043f2fff, /* dst_mask */
812 TRUE), /* pcrel_offset */
814 HOWTO (R_ARM_THM_JUMP6, /* type */
816 1, /* size (0 = byte, 1 = short, 2 = long) */
818 TRUE, /* pc_relative */
820 complain_overflow_unsigned,/* complain_on_overflow */
821 bfd_elf_generic_reloc, /* special_function */
822 "R_ARM_THM_JUMP6", /* name */
823 FALSE, /* partial_inplace */
824 0x02f8, /* src_mask */
825 0x02f8, /* dst_mask */
826 TRUE), /* pcrel_offset */
828 /* These are declared as 13-bit signed relocations because we can
829 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
831 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
833 2, /* size (0 = byte, 1 = short, 2 = long) */
835 TRUE, /* pc_relative */
837 complain_overflow_dont,/* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_ARM_THM_ALU_PREL_11_0",/* name */
840 FALSE, /* partial_inplace */
841 0xffffffff, /* src_mask */
842 0xffffffff, /* dst_mask */
843 TRUE), /* pcrel_offset */
845 HOWTO (R_ARM_THM_PC12, /* type */
847 2, /* size (0 = byte, 1 = short, 2 = long) */
849 TRUE, /* pc_relative */
851 complain_overflow_dont,/* complain_on_overflow */
852 bfd_elf_generic_reloc, /* special_function */
853 "R_ARM_THM_PC12", /* name */
854 FALSE, /* partial_inplace */
855 0xffffffff, /* src_mask */
856 0xffffffff, /* dst_mask */
857 TRUE), /* pcrel_offset */
859 HOWTO (R_ARM_ABS32_NOI, /* type */
861 2, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE, /* pc_relative */
865 complain_overflow_dont,/* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_ARM_ABS32_NOI", /* name */
868 FALSE, /* partial_inplace */
869 0xffffffff, /* src_mask */
870 0xffffffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
873 HOWTO (R_ARM_REL32_NOI, /* type */
875 2, /* size (0 = byte, 1 = short, 2 = long) */
877 TRUE, /* pc_relative */
879 complain_overflow_dont,/* complain_on_overflow */
880 bfd_elf_generic_reloc, /* special_function */
881 "R_ARM_REL32_NOI", /* name */
882 FALSE, /* partial_inplace */
883 0xffffffff, /* src_mask */
884 0xffffffff, /* dst_mask */
885 FALSE), /* pcrel_offset */
887 /* Group relocations. */
889 HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
891 2, /* size (0 = byte, 1 = short, 2 = long) */
893 TRUE, /* pc_relative */
895 complain_overflow_dont,/* complain_on_overflow */
896 bfd_elf_generic_reloc, /* special_function */
897 "R_ARM_ALU_PC_G0_NC", /* name */
898 FALSE, /* partial_inplace */
899 0xffffffff, /* src_mask */
900 0xffffffff, /* dst_mask */
901 TRUE), /* pcrel_offset */
903 HOWTO (R_ARM_ALU_PC_G0, /* type */
905 2, /* size (0 = byte, 1 = short, 2 = long) */
907 TRUE, /* pc_relative */
909 complain_overflow_dont,/* complain_on_overflow */
910 bfd_elf_generic_reloc, /* special_function */
911 "R_ARM_ALU_PC_G0", /* name */
912 FALSE, /* partial_inplace */
913 0xffffffff, /* src_mask */
914 0xffffffff, /* dst_mask */
915 TRUE), /* pcrel_offset */
917 HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
919 2, /* size (0 = byte, 1 = short, 2 = long) */
921 TRUE, /* pc_relative */
923 complain_overflow_dont,/* complain_on_overflow */
924 bfd_elf_generic_reloc, /* special_function */
925 "R_ARM_ALU_PC_G1_NC", /* name */
926 FALSE, /* partial_inplace */
927 0xffffffff, /* src_mask */
928 0xffffffff, /* dst_mask */
929 TRUE), /* pcrel_offset */
931 HOWTO (R_ARM_ALU_PC_G1, /* type */
933 2, /* size (0 = byte, 1 = short, 2 = long) */
935 TRUE, /* pc_relative */
937 complain_overflow_dont,/* complain_on_overflow */
938 bfd_elf_generic_reloc, /* special_function */
939 "R_ARM_ALU_PC_G1", /* name */
940 FALSE, /* partial_inplace */
941 0xffffffff, /* src_mask */
942 0xffffffff, /* dst_mask */
943 TRUE), /* pcrel_offset */
945 HOWTO (R_ARM_ALU_PC_G2, /* type */
947 2, /* size (0 = byte, 1 = short, 2 = long) */
949 TRUE, /* pc_relative */
951 complain_overflow_dont,/* complain_on_overflow */
952 bfd_elf_generic_reloc, /* special_function */
953 "R_ARM_ALU_PC_G2", /* name */
954 FALSE, /* partial_inplace */
955 0xffffffff, /* src_mask */
956 0xffffffff, /* dst_mask */
957 TRUE), /* pcrel_offset */
959 HOWTO (R_ARM_LDR_PC_G1, /* type */
961 2, /* size (0 = byte, 1 = short, 2 = long) */
963 TRUE, /* pc_relative */
965 complain_overflow_dont,/* complain_on_overflow */
966 bfd_elf_generic_reloc, /* special_function */
967 "R_ARM_LDR_PC_G1", /* name */
968 FALSE, /* partial_inplace */
969 0xffffffff, /* src_mask */
970 0xffffffff, /* dst_mask */
971 TRUE), /* pcrel_offset */
973 HOWTO (R_ARM_LDR_PC_G2, /* type */
975 2, /* size (0 = byte, 1 = short, 2 = long) */
977 TRUE, /* pc_relative */
979 complain_overflow_dont,/* complain_on_overflow */
980 bfd_elf_generic_reloc, /* special_function */
981 "R_ARM_LDR_PC_G2", /* name */
982 FALSE, /* partial_inplace */
983 0xffffffff, /* src_mask */
984 0xffffffff, /* dst_mask */
985 TRUE), /* pcrel_offset */
987 HOWTO (R_ARM_LDRS_PC_G0, /* type */
989 2, /* size (0 = byte, 1 = short, 2 = long) */
991 TRUE, /* pc_relative */
993 complain_overflow_dont,/* complain_on_overflow */
994 bfd_elf_generic_reloc, /* special_function */
995 "R_ARM_LDRS_PC_G0", /* name */
996 FALSE, /* partial_inplace */
997 0xffffffff, /* src_mask */
998 0xffffffff, /* dst_mask */
999 TRUE), /* pcrel_offset */
1001 HOWTO (R_ARM_LDRS_PC_G1, /* type */
1003 2, /* size (0 = byte, 1 = short, 2 = long) */
1005 TRUE, /* pc_relative */
1007 complain_overflow_dont,/* complain_on_overflow */
1008 bfd_elf_generic_reloc, /* special_function */
1009 "R_ARM_LDRS_PC_G1", /* name */
1010 FALSE, /* partial_inplace */
1011 0xffffffff, /* src_mask */
1012 0xffffffff, /* dst_mask */
1013 TRUE), /* pcrel_offset */
1015 HOWTO (R_ARM_LDRS_PC_G2, /* type */
1017 2, /* size (0 = byte, 1 = short, 2 = long) */
1019 TRUE, /* pc_relative */
1021 complain_overflow_dont,/* complain_on_overflow */
1022 bfd_elf_generic_reloc, /* special_function */
1023 "R_ARM_LDRS_PC_G2", /* name */
1024 FALSE, /* partial_inplace */
1025 0xffffffff, /* src_mask */
1026 0xffffffff, /* dst_mask */
1027 TRUE), /* pcrel_offset */
1029 HOWTO (R_ARM_LDC_PC_G0, /* type */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 TRUE, /* pc_relative */
1035 complain_overflow_dont,/* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 "R_ARM_LDC_PC_G0", /* name */
1038 FALSE, /* partial_inplace */
1039 0xffffffff, /* src_mask */
1040 0xffffffff, /* dst_mask */
1041 TRUE), /* pcrel_offset */
1043 HOWTO (R_ARM_LDC_PC_G1, /* type */
1045 2, /* size (0 = byte, 1 = short, 2 = long) */
1047 TRUE, /* pc_relative */
1049 complain_overflow_dont,/* complain_on_overflow */
1050 bfd_elf_generic_reloc, /* special_function */
1051 "R_ARM_LDC_PC_G1", /* name */
1052 FALSE, /* partial_inplace */
1053 0xffffffff, /* src_mask */
1054 0xffffffff, /* dst_mask */
1055 TRUE), /* pcrel_offset */
1057 HOWTO (R_ARM_LDC_PC_G2, /* type */
1059 2, /* size (0 = byte, 1 = short, 2 = long) */
1061 TRUE, /* pc_relative */
1063 complain_overflow_dont,/* complain_on_overflow */
1064 bfd_elf_generic_reloc, /* special_function */
1065 "R_ARM_LDC_PC_G2", /* name */
1066 FALSE, /* partial_inplace */
1067 0xffffffff, /* src_mask */
1068 0xffffffff, /* dst_mask */
1069 TRUE), /* pcrel_offset */
1071 HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
1073 2, /* size (0 = byte, 1 = short, 2 = long) */
1075 TRUE, /* pc_relative */
1077 complain_overflow_dont,/* complain_on_overflow */
1078 bfd_elf_generic_reloc, /* special_function */
1079 "R_ARM_ALU_SB_G0_NC", /* name */
1080 FALSE, /* partial_inplace */
1081 0xffffffff, /* src_mask */
1082 0xffffffff, /* dst_mask */
1083 TRUE), /* pcrel_offset */
1085 HOWTO (R_ARM_ALU_SB_G0, /* type */
1087 2, /* size (0 = byte, 1 = short, 2 = long) */
1089 TRUE, /* pc_relative */
1091 complain_overflow_dont,/* complain_on_overflow */
1092 bfd_elf_generic_reloc, /* special_function */
1093 "R_ARM_ALU_SB_G0", /* name */
1094 FALSE, /* partial_inplace */
1095 0xffffffff, /* src_mask */
1096 0xffffffff, /* dst_mask */
1097 TRUE), /* pcrel_offset */
1099 HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
1101 2, /* size (0 = byte, 1 = short, 2 = long) */
1103 TRUE, /* pc_relative */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_ARM_ALU_SB_G1_NC", /* name */
1108 FALSE, /* partial_inplace */
1109 0xffffffff, /* src_mask */
1110 0xffffffff, /* dst_mask */
1111 TRUE), /* pcrel_offset */
1113 HOWTO (R_ARM_ALU_SB_G1, /* type */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1117 TRUE, /* pc_relative */
1119 complain_overflow_dont,/* complain_on_overflow */
1120 bfd_elf_generic_reloc, /* special_function */
1121 "R_ARM_ALU_SB_G1", /* name */
1122 FALSE, /* partial_inplace */
1123 0xffffffff, /* src_mask */
1124 0xffffffff, /* dst_mask */
1125 TRUE), /* pcrel_offset */
1127 HOWTO (R_ARM_ALU_SB_G2, /* type */
1129 2, /* size (0 = byte, 1 = short, 2 = long) */
1131 TRUE, /* pc_relative */
1133 complain_overflow_dont,/* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_ARM_ALU_SB_G2", /* name */
1136 FALSE, /* partial_inplace */
1137 0xffffffff, /* src_mask */
1138 0xffffffff, /* dst_mask */
1139 TRUE), /* pcrel_offset */
1141 HOWTO (R_ARM_LDR_SB_G0, /* type */
1143 2, /* size (0 = byte, 1 = short, 2 = long) */
1145 TRUE, /* pc_relative */
1147 complain_overflow_dont,/* complain_on_overflow */
1148 bfd_elf_generic_reloc, /* special_function */
1149 "R_ARM_LDR_SB_G0", /* name */
1150 FALSE, /* partial_inplace */
1151 0xffffffff, /* src_mask */
1152 0xffffffff, /* dst_mask */
1153 TRUE), /* pcrel_offset */
1155 HOWTO (R_ARM_LDR_SB_G1, /* type */
1157 2, /* size (0 = byte, 1 = short, 2 = long) */
1159 TRUE, /* pc_relative */
1161 complain_overflow_dont,/* complain_on_overflow */
1162 bfd_elf_generic_reloc, /* special_function */
1163 "R_ARM_LDR_SB_G1", /* name */
1164 FALSE, /* partial_inplace */
1165 0xffffffff, /* src_mask */
1166 0xffffffff, /* dst_mask */
1167 TRUE), /* pcrel_offset */
1169 HOWTO (R_ARM_LDR_SB_G2, /* type */
1171 2, /* size (0 = byte, 1 = short, 2 = long) */
1173 TRUE, /* pc_relative */
1175 complain_overflow_dont,/* complain_on_overflow */
1176 bfd_elf_generic_reloc, /* special_function */
1177 "R_ARM_LDR_SB_G2", /* name */
1178 FALSE, /* partial_inplace */
1179 0xffffffff, /* src_mask */
1180 0xffffffff, /* dst_mask */
1181 TRUE), /* pcrel_offset */
1183 HOWTO (R_ARM_LDRS_SB_G0, /* type */
1185 2, /* size (0 = byte, 1 = short, 2 = long) */
1187 TRUE, /* pc_relative */
1189 complain_overflow_dont,/* complain_on_overflow */
1190 bfd_elf_generic_reloc, /* special_function */
1191 "R_ARM_LDRS_SB_G0", /* name */
1192 FALSE, /* partial_inplace */
1193 0xffffffff, /* src_mask */
1194 0xffffffff, /* dst_mask */
1195 TRUE), /* pcrel_offset */
1197 HOWTO (R_ARM_LDRS_SB_G1, /* type */
1199 2, /* size (0 = byte, 1 = short, 2 = long) */
1201 TRUE, /* pc_relative */
1203 complain_overflow_dont,/* complain_on_overflow */
1204 bfd_elf_generic_reloc, /* special_function */
1205 "R_ARM_LDRS_SB_G1", /* name */
1206 FALSE, /* partial_inplace */
1207 0xffffffff, /* src_mask */
1208 0xffffffff, /* dst_mask */
1209 TRUE), /* pcrel_offset */
1211 HOWTO (R_ARM_LDRS_SB_G2, /* type */
1213 2, /* size (0 = byte, 1 = short, 2 = long) */
1215 TRUE, /* pc_relative */
1217 complain_overflow_dont,/* complain_on_overflow */
1218 bfd_elf_generic_reloc, /* special_function */
1219 "R_ARM_LDRS_SB_G2", /* name */
1220 FALSE, /* partial_inplace */
1221 0xffffffff, /* src_mask */
1222 0xffffffff, /* dst_mask */
1223 TRUE), /* pcrel_offset */
1225 HOWTO (R_ARM_LDC_SB_G0, /* type */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 TRUE, /* pc_relative */
1231 complain_overflow_dont,/* complain_on_overflow */
1232 bfd_elf_generic_reloc, /* special_function */
1233 "R_ARM_LDC_SB_G0", /* name */
1234 FALSE, /* partial_inplace */
1235 0xffffffff, /* src_mask */
1236 0xffffffff, /* dst_mask */
1237 TRUE), /* pcrel_offset */
1239 HOWTO (R_ARM_LDC_SB_G1, /* type */
1241 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 TRUE, /* pc_relative */
1245 complain_overflow_dont,/* complain_on_overflow */
1246 bfd_elf_generic_reloc, /* special_function */
1247 "R_ARM_LDC_SB_G1", /* name */
1248 FALSE, /* partial_inplace */
1249 0xffffffff, /* src_mask */
1250 0xffffffff, /* dst_mask */
1251 TRUE), /* pcrel_offset */
1253 HOWTO (R_ARM_LDC_SB_G2, /* type */
1255 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 TRUE, /* pc_relative */
1259 complain_overflow_dont,/* complain_on_overflow */
1260 bfd_elf_generic_reloc, /* special_function */
1261 "R_ARM_LDC_SB_G2", /* name */
1262 FALSE, /* partial_inplace */
1263 0xffffffff, /* src_mask */
1264 0xffffffff, /* dst_mask */
1265 TRUE), /* pcrel_offset */
1267 /* End of group relocations. */
1269 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
1271 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 FALSE, /* pc_relative */
1275 complain_overflow_dont,/* complain_on_overflow */
1276 bfd_elf_generic_reloc, /* special_function */
1277 "R_ARM_MOVW_BREL_NC", /* name */
1278 FALSE, /* partial_inplace */
1279 0x0000ffff, /* src_mask */
1280 0x0000ffff, /* dst_mask */
1281 FALSE), /* pcrel_offset */
1283 HOWTO (R_ARM_MOVT_BREL, /* type */
1285 2, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE, /* pc_relative */
1289 complain_overflow_bitfield,/* complain_on_overflow */
1290 bfd_elf_generic_reloc, /* special_function */
1291 "R_ARM_MOVT_BREL", /* name */
1292 FALSE, /* partial_inplace */
1293 0x0000ffff, /* src_mask */
1294 0x0000ffff, /* dst_mask */
1295 FALSE), /* pcrel_offset */
1297 HOWTO (R_ARM_MOVW_BREL, /* type */
1299 2, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_dont,/* complain_on_overflow */
1304 bfd_elf_generic_reloc, /* special_function */
1305 "R_ARM_MOVW_BREL", /* name */
1306 FALSE, /* partial_inplace */
1307 0x0000ffff, /* src_mask */
1308 0x0000ffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1311 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE, /* pc_relative */
1317 complain_overflow_dont,/* complain_on_overflow */
1318 bfd_elf_generic_reloc, /* special_function */
1319 "R_ARM_THM_MOVW_BREL_NC",/* name */
1320 FALSE, /* partial_inplace */
1321 0x040f70ff, /* src_mask */
1322 0x040f70ff, /* dst_mask */
1323 FALSE), /* pcrel_offset */
1325 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
1327 2, /* size (0 = byte, 1 = short, 2 = long) */
1329 FALSE, /* pc_relative */
1331 complain_overflow_bitfield,/* complain_on_overflow */
1332 bfd_elf_generic_reloc, /* special_function */
1333 "R_ARM_THM_MOVT_BREL", /* name */
1334 FALSE, /* partial_inplace */
1335 0x040f70ff, /* src_mask */
1336 0x040f70ff, /* dst_mask */
1337 FALSE), /* pcrel_offset */
1339 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
1341 2, /* size (0 = byte, 1 = short, 2 = long) */
1343 FALSE, /* pc_relative */
1345 complain_overflow_dont,/* complain_on_overflow */
1346 bfd_elf_generic_reloc, /* special_function */
1347 "R_ARM_THM_MOVW_BREL", /* name */
1348 FALSE, /* partial_inplace */
1349 0x040f70ff, /* src_mask */
1350 0x040f70ff, /* dst_mask */
1351 FALSE), /* pcrel_offset */
1353 EMPTY_HOWTO (90), /* unallocated */
1358 HOWTO (R_ARM_PLT32_ABS, /* type */
1360 2, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE, /* pc_relative */
1364 complain_overflow_dont,/* complain_on_overflow */
1365 bfd_elf_generic_reloc, /* special_function */
1366 "R_ARM_PLT32_ABS", /* name */
1367 FALSE, /* partial_inplace */
1368 0xffffffff, /* src_mask */
1369 0xffffffff, /* dst_mask */
1370 FALSE), /* pcrel_offset */
1372 HOWTO (R_ARM_GOT_ABS, /* type */
1374 2, /* size (0 = byte, 1 = short, 2 = long) */
1376 FALSE, /* pc_relative */
1378 complain_overflow_dont,/* complain_on_overflow */
1379 bfd_elf_generic_reloc, /* special_function */
1380 "R_ARM_GOT_ABS", /* name */
1381 FALSE, /* partial_inplace */
1382 0xffffffff, /* src_mask */
1383 0xffffffff, /* dst_mask */
1384 FALSE), /* pcrel_offset */
1386 HOWTO (R_ARM_GOT_PREL, /* type */
1388 2, /* size (0 = byte, 1 = short, 2 = long) */
1390 TRUE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 bfd_elf_generic_reloc, /* special_function */
1394 "R_ARM_GOT_PREL", /* name */
1395 FALSE, /* partial_inplace */
1396 0xffffffff, /* src_mask */
1397 0xffffffff, /* dst_mask */
1398 TRUE), /* pcrel_offset */
1400 HOWTO (R_ARM_GOT_BREL12, /* type */
1402 2, /* size (0 = byte, 1 = short, 2 = long) */
1404 FALSE, /* pc_relative */
1406 complain_overflow_bitfield,/* complain_on_overflow */
1407 bfd_elf_generic_reloc, /* special_function */
1408 "R_ARM_GOT_BREL12", /* name */
1409 FALSE, /* partial_inplace */
1410 0x00000fff, /* src_mask */
1411 0x00000fff, /* dst_mask */
1412 FALSE), /* pcrel_offset */
1414 HOWTO (R_ARM_GOTOFF12, /* type */
1416 2, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE, /* pc_relative */
1420 complain_overflow_bitfield,/* complain_on_overflow */
1421 bfd_elf_generic_reloc, /* special_function */
1422 "R_ARM_GOTOFF12", /* name */
1423 FALSE, /* partial_inplace */
1424 0x00000fff, /* src_mask */
1425 0x00000fff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1428 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1430 /* GNU extension to record C++ vtable member usage */
1431 HOWTO (R_ARM_GNU_VTENTRY, /* type */
1433 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1439 "R_ARM_GNU_VTENTRY", /* name */
1440 FALSE, /* partial_inplace */
1443 FALSE), /* pcrel_offset */
1445 /* GNU extension to record C++ vtable hierarchy */
1446 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1448 2, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 NULL, /* special_function */
1454 "R_ARM_GNU_VTINHERIT", /* name */
1455 FALSE, /* partial_inplace */
1458 FALSE), /* pcrel_offset */
1460 HOWTO (R_ARM_THM_JUMP11, /* type */
1462 1, /* size (0 = byte, 1 = short, 2 = long) */
1464 TRUE, /* pc_relative */
1466 complain_overflow_signed, /* complain_on_overflow */
1467 bfd_elf_generic_reloc, /* special_function */
1468 "R_ARM_THM_JUMP11", /* name */
1469 FALSE, /* partial_inplace */
1470 0x000007ff, /* src_mask */
1471 0x000007ff, /* dst_mask */
1472 TRUE), /* pcrel_offset */
1474 HOWTO (R_ARM_THM_JUMP8, /* type */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 TRUE, /* pc_relative */
1480 complain_overflow_signed, /* complain_on_overflow */
1481 bfd_elf_generic_reloc, /* special_function */
1482 "R_ARM_THM_JUMP8", /* name */
1483 FALSE, /* partial_inplace */
1484 0x000000ff, /* src_mask */
1485 0x000000ff, /* dst_mask */
1486 TRUE), /* pcrel_offset */
1488 /* TLS relocations */
1489 HOWTO (R_ARM_TLS_GD32, /* type */
1491 2, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE, /* pc_relative */
1495 complain_overflow_bitfield,/* complain_on_overflow */
1496 NULL, /* special_function */
1497 "R_ARM_TLS_GD32", /* name */
1498 TRUE, /* partial_inplace */
1499 0xffffffff, /* src_mask */
1500 0xffffffff, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1503 HOWTO (R_ARM_TLS_LDM32, /* type */
1505 2, /* size (0 = byte, 1 = short, 2 = long) */
1507 FALSE, /* pc_relative */
1509 complain_overflow_bitfield,/* complain_on_overflow */
1510 bfd_elf_generic_reloc, /* special_function */
1511 "R_ARM_TLS_LDM32", /* name */
1512 TRUE, /* partial_inplace */
1513 0xffffffff, /* src_mask */
1514 0xffffffff, /* dst_mask */
1515 FALSE), /* pcrel_offset */
1517 HOWTO (R_ARM_TLS_LDO32, /* type */
1519 2, /* size (0 = byte, 1 = short, 2 = long) */
1521 FALSE, /* pc_relative */
1523 complain_overflow_bitfield,/* complain_on_overflow */
1524 bfd_elf_generic_reloc, /* special_function */
1525 "R_ARM_TLS_LDO32", /* name */
1526 TRUE, /* partial_inplace */
1527 0xffffffff, /* src_mask */
1528 0xffffffff, /* dst_mask */
1529 FALSE), /* pcrel_offset */
1531 HOWTO (R_ARM_TLS_IE32, /* type */
1533 2, /* size (0 = byte, 1 = short, 2 = long) */
1535 FALSE, /* pc_relative */
1537 complain_overflow_bitfield,/* complain_on_overflow */
1538 NULL, /* special_function */
1539 "R_ARM_TLS_IE32", /* name */
1540 TRUE, /* partial_inplace */
1541 0xffffffff, /* src_mask */
1542 0xffffffff, /* dst_mask */
1543 FALSE), /* pcrel_offset */
1545 HOWTO (R_ARM_TLS_LE32, /* type */
1547 2, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE, /* pc_relative */
1551 complain_overflow_bitfield,/* complain_on_overflow */
1552 bfd_elf_generic_reloc, /* special_function */
1553 "R_ARM_TLS_LE32", /* name */
1554 TRUE, /* partial_inplace */
1555 0xffffffff, /* src_mask */
1556 0xffffffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1559 HOWTO (R_ARM_TLS_LDO12, /* type */
1561 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE, /* pc_relative */
1565 complain_overflow_bitfield,/* complain_on_overflow */
1566 bfd_elf_generic_reloc, /* special_function */
1567 "R_ARM_TLS_LDO12", /* name */
1568 FALSE, /* partial_inplace */
1569 0x00000fff, /* src_mask */
1570 0x00000fff, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1573 HOWTO (R_ARM_TLS_LE12, /* type */
1575 2, /* size (0 = byte, 1 = short, 2 = long) */
1577 FALSE, /* pc_relative */
1579 complain_overflow_bitfield,/* complain_on_overflow */
1580 bfd_elf_generic_reloc, /* special_function */
1581 "R_ARM_TLS_LE12", /* name */
1582 FALSE, /* partial_inplace */
1583 0x00000fff, /* src_mask */
1584 0x00000fff, /* dst_mask */
1585 FALSE), /* pcrel_offset */
1587 HOWTO (R_ARM_TLS_IE12GP, /* type */
1589 2, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE, /* pc_relative */
1593 complain_overflow_bitfield,/* complain_on_overflow */
1594 bfd_elf_generic_reloc, /* special_function */
1595 "R_ARM_TLS_IE12GP", /* name */
1596 FALSE, /* partial_inplace */
1597 0x00000fff, /* src_mask */
1598 0x00000fff, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1602 /* 112-127 private relocations
1603 128 R_ARM_ME_TOO, obsolete
1604 129-255 unallocated in AAELF.
1606 249-255 extended, currently unused, relocations: */
1608 static reloc_howto_type elf32_arm_howto_table_2[4] =
1610 HOWTO (R_ARM_RREL32, /* type */
1612 0, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE, /* pc_relative */
1616 complain_overflow_dont,/* complain_on_overflow */
1617 bfd_elf_generic_reloc, /* special_function */
1618 "R_ARM_RREL32", /* name */
1619 FALSE, /* partial_inplace */
1622 FALSE), /* pcrel_offset */
1624 HOWTO (R_ARM_RABS32, /* type */
1626 0, /* size (0 = byte, 1 = short, 2 = long) */
1628 FALSE, /* pc_relative */
1630 complain_overflow_dont,/* complain_on_overflow */
1631 bfd_elf_generic_reloc, /* special_function */
1632 "R_ARM_RABS32", /* name */
1633 FALSE, /* partial_inplace */
1636 FALSE), /* pcrel_offset */
1638 HOWTO (R_ARM_RPC24, /* type */
1640 0, /* size (0 = byte, 1 = short, 2 = long) */
1642 FALSE, /* pc_relative */
1644 complain_overflow_dont,/* complain_on_overflow */
1645 bfd_elf_generic_reloc, /* special_function */
1646 "R_ARM_RPC24", /* name */
1647 FALSE, /* partial_inplace */
1650 FALSE), /* pcrel_offset */
1652 HOWTO (R_ARM_RBASE, /* type */
1654 0, /* size (0 = byte, 1 = short, 2 = long) */
1656 FALSE, /* pc_relative */
1658 complain_overflow_dont,/* complain_on_overflow */
1659 bfd_elf_generic_reloc, /* special_function */
1660 "R_ARM_RBASE", /* name */
1661 FALSE, /* partial_inplace */
1664 FALSE) /* pcrel_offset */
1667 static reloc_howto_type *
1668 elf32_arm_howto_from_type (unsigned int r_type)
1670 if (r_type < NUM_ELEM (elf32_arm_howto_table_1))
1671 return &elf32_arm_howto_table_1[r_type];
1673 if (r_type >= R_ARM_RREL32
1674 && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2))
1675 return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32];
1681 elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1682 Elf_Internal_Rela * elf_reloc)
1684 unsigned int r_type;
1686 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1687 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1690 struct elf32_arm_reloc_map
1692 bfd_reloc_code_real_type bfd_reloc_val;
1693 unsigned char elf_reloc_val;
1696 /* All entries in this list must also be present in elf32_arm_howto_table. */
1697 static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1699 {BFD_RELOC_NONE, R_ARM_NONE},
1700 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
1701 {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
1702 {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
1703 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1704 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1705 {BFD_RELOC_32, R_ARM_ABS32},
1706 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1707 {BFD_RELOC_8, R_ARM_ABS8},
1708 {BFD_RELOC_16, R_ARM_ABS16},
1709 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1710 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1714 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1715 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1716 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
1717 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1718 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1719 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
1720 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
1721 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1722 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1723 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1724 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1725 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1726 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1727 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
1728 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1729 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1730 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1731 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1732 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1733 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1734 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1735 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1736 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1737 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
1738 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1739 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
1740 {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
1741 {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
1742 {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
1743 {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
1744 {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
1745 {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
1746 {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
1747 {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
1748 {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
1749 {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
1750 {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
1751 {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
1752 {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
1753 {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
1754 {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
1755 {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
1756 {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
1757 {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
1758 {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
1759 {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
1760 {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
1761 {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
1762 {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
1763 {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
1764 {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
1765 {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
1766 {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
1767 {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
1768 {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
1769 {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
1770 {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
1771 {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
1772 {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
1773 {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
1774 {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
1775 {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2}
1778 static reloc_howto_type *
1779 elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1780 bfd_reloc_code_real_type code)
1783 for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
1784 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1785 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
1790 static reloc_howto_type *
1791 elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1797 i < (sizeof (elf32_arm_howto_table_1)
1798 / sizeof (elf32_arm_howto_table_1[0]));
1800 if (elf32_arm_howto_table_1[i].name != NULL
1801 && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
1802 return &elf32_arm_howto_table_1[i];
1805 i < (sizeof (elf32_arm_howto_table_2)
1806 / sizeof (elf32_arm_howto_table_2[0]));
1808 if (elf32_arm_howto_table_2[i].name != NULL
1809 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1810 return &elf32_arm_howto_table_2[i];
1815 /* Support for core dump NOTE sections */
1817 elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1822 switch (note->descsz)
1827 case 148: /* Linux/ARM 32-bit*/
1829 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1832 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1841 /* Make a ".reg/999" section. */
1842 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1843 size, note->descpos + offset);
1847 elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1849 switch (note->descsz)
1854 case 124: /* Linux/ARM elf_prpsinfo */
1855 elf_tdata (abfd)->core_program
1856 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1857 elf_tdata (abfd)->core_command
1858 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1861 /* Note that for some reason, a spurious space is tacked
1862 onto the end of the args in some (at least one anyway)
1863 implementations, so strip it off if it exists. */
1866 char *command = elf_tdata (abfd)->core_command;
1867 int n = strlen (command);
1869 if (0 < n && command[n - 1] == ' ')
1870 command[n - 1] = '\0';
1876 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1877 #define TARGET_LITTLE_NAME "elf32-littlearm"
1878 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1879 #define TARGET_BIG_NAME "elf32-bigarm"
1881 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1882 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1884 typedef unsigned long int insn32;
1885 typedef unsigned short int insn16;
1887 /* In lieu of proper flags, assume all EABIv4 or later objects are
1889 #define INTERWORK_FLAG(abfd) \
1890 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1891 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1893 /* The linker script knows the section names for placement.
1894 The entry_names are used to do simple name mangling on the stubs.
1895 Given a function name, and its type, the stub can be found. The
1896 name can be changed. The only requirement is the %s be present. */
1897 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1898 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1900 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1901 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1903 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1904 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1906 /* The name of the dynamic interpreter. This is put in the .interp
1908 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1910 #ifdef FOUR_WORD_PLT
1912 /* The first entry in a procedure linkage table looks like
1913 this. It is set up so that any shared library function that is
1914 called before the relocation has been set up calls the dynamic
1916 static const bfd_vma elf32_arm_plt0_entry [] =
1918 0xe52de004, /* str lr, [sp, #-4]! */
1919 0xe59fe010, /* ldr lr, [pc, #16] */
1920 0xe08fe00e, /* add lr, pc, lr */
1921 0xe5bef008, /* ldr pc, [lr, #8]! */
1924 /* Subsequent entries in a procedure linkage table look like
1926 static const bfd_vma elf32_arm_plt_entry [] =
1928 0xe28fc600, /* add ip, pc, #NN */
1929 0xe28cca00, /* add ip, ip, #NN */
1930 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1931 0x00000000, /* unused */
1936 /* The first entry in a procedure linkage table looks like
1937 this. It is set up so that any shared library function that is
1938 called before the relocation has been set up calls the dynamic
1940 static const bfd_vma elf32_arm_plt0_entry [] =
1942 0xe52de004, /* str lr, [sp, #-4]! */
1943 0xe59fe004, /* ldr lr, [pc, #4] */
1944 0xe08fe00e, /* add lr, pc, lr */
1945 0xe5bef008, /* ldr pc, [lr, #8]! */
1946 0x00000000, /* &GOT[0] - . */
1949 /* Subsequent entries in a procedure linkage table look like
1951 static const bfd_vma elf32_arm_plt_entry [] =
1953 0xe28fc600, /* add ip, pc, #0xNN00000 */
1954 0xe28cca00, /* add ip, ip, #0xNN000 */
1955 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1960 /* The format of the first entry in the procedure linkage table
1961 for a VxWorks executable. */
1962 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1964 0xe52dc008, /* str ip,[sp,#-8]! */
1965 0xe59fc000, /* ldr ip,[pc] */
1966 0xe59cf008, /* ldr pc,[ip,#8] */
1967 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1970 /* The format of subsequent entries in a VxWorks executable. */
1971 static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1973 0xe59fc000, /* ldr ip,[pc] */
1974 0xe59cf000, /* ldr pc,[ip] */
1975 0x00000000, /* .long @got */
1976 0xe59fc000, /* ldr ip,[pc] */
1977 0xea000000, /* b _PLT */
1978 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1981 /* The format of entries in a VxWorks shared library. */
1982 static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1984 0xe59fc000, /* ldr ip,[pc] */
1985 0xe79cf009, /* ldr pc,[ip,r9] */
1986 0x00000000, /* .long @got */
1987 0xe59fc000, /* ldr ip,[pc] */
1988 0xe599f008, /* ldr pc,[r9,#8] */
1989 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1992 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1993 #define PLT_THUMB_STUB_SIZE 4
1994 static const bfd_vma elf32_arm_plt_thumb_stub [] =
2000 /* The entries in a PLT when using a DLL-based target with multiple
2002 static const bfd_vma elf32_arm_symbian_plt_entry [] =
2004 0xe51ff004, /* ldr pc, [pc, #-4] */
2005 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2008 /* Used to build a map of a section. This is required for mixed-endian
2011 typedef struct elf32_elf_section_map
2016 elf32_arm_section_map;
2018 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2022 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2023 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2024 VFP11_ERRATUM_ARM_VENEER,
2025 VFP11_ERRATUM_THUMB_VENEER
2027 elf32_vfp11_erratum_type;
2029 typedef struct elf32_vfp11_erratum_list
2031 struct elf32_vfp11_erratum_list *next;
2037 struct elf32_vfp11_erratum_list *veneer;
2038 unsigned int vfp_insn;
2042 struct elf32_vfp11_erratum_list *branch;
2046 elf32_vfp11_erratum_type type;
2048 elf32_vfp11_erratum_list;
2050 typedef struct _arm_elf_section_data
2052 struct bfd_elf_section_data elf;
2053 unsigned int mapcount;
2054 unsigned int mapsize;
2055 elf32_arm_section_map *map;
2056 unsigned int erratumcount;
2057 elf32_vfp11_erratum_list *erratumlist;
2059 _arm_elf_section_data;
2061 #define elf32_arm_section_data(sec) \
2062 ((_arm_elf_section_data *) elf_section_data (sec))
2064 /* The size of the thread control block. */
2067 #define NUM_KNOWN_ATTRIBUTES 32
2069 typedef struct aeabi_attribute
2076 typedef struct aeabi_attribute_list
2078 struct aeabi_attribute_list *next;
2080 aeabi_attribute attr;
2081 } aeabi_attribute_list;
2083 struct elf32_arm_obj_tdata
2085 struct elf_obj_tdata root;
2087 /* tls_type for each local got entry. */
2088 char *local_got_tls_type;
2090 aeabi_attribute known_eabi_attributes[NUM_KNOWN_ATTRIBUTES];
2091 aeabi_attribute_list *other_eabi_attributes;
2093 /* Zero to warn when linking objects with incompatible enum sizes. */
2094 int no_enum_size_warning;
2097 #define elf32_arm_tdata(abfd) \
2098 ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any)
2100 #define elf32_arm_local_got_tls_type(abfd) \
2101 (elf32_arm_tdata (abfd)->local_got_tls_type)
2104 elf32_arm_mkobject (bfd *abfd)
2106 if (abfd->tdata.any == NULL)
2108 bfd_size_type amt = sizeof (struct elf32_arm_obj_tdata);
2109 abfd->tdata.any = bfd_zalloc (abfd, amt);
2110 if (abfd->tdata.any == NULL)
2113 return bfd_elf_mkobject (abfd);
2116 /* The ARM linker needs to keep track of the number of relocs that it
2117 decides to copy in check_relocs for each symbol. This is so that
2118 it can discard PC relative relocs if it doesn't need them when
2119 linking with -Bsymbolic. We store the information in a field
2120 extending the regular ELF linker hash table. */
2122 /* This structure keeps track of the number of relocs we have copied
2123 for a given symbol. */
2124 struct elf32_arm_relocs_copied
2127 struct elf32_arm_relocs_copied * next;
2128 /* A section in dynobj. */
2130 /* Number of relocs copied in this section. */
2131 bfd_size_type count;
2132 /* Number of PC-relative relocs copied in this section. */
2133 bfd_size_type pc_count;
2136 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2138 /* Arm ELF linker hash entry. */
2139 struct elf32_arm_link_hash_entry
2141 struct elf_link_hash_entry root;
2143 /* Number of PC relative relocs copied for this symbol. */
2144 struct elf32_arm_relocs_copied * relocs_copied;
2146 /* We reference count Thumb references to a PLT entry separately,
2147 so that we can emit the Thumb trampoline only if needed. */
2148 bfd_signed_vma plt_thumb_refcount;
2150 /* Since PLT entries have variable size if the Thumb prologue is
2151 used, we need to record the index into .got.plt instead of
2152 recomputing it from the PLT offset. */
2153 bfd_signed_vma plt_got_offset;
2155 #define GOT_UNKNOWN 0
2156 #define GOT_NORMAL 1
2157 #define GOT_TLS_GD 2
2158 #define GOT_TLS_IE 4
2159 unsigned char tls_type;
2161 /* The symbol marking the real symbol location for exported thumb
2162 symbols with Arm stubs. */
2163 struct elf_link_hash_entry *export_glue;
2166 /* Traverse an arm ELF linker hash table. */
2167 #define elf32_arm_link_hash_traverse(table, func, info) \
2168 (elf_link_hash_traverse \
2170 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2173 /* Get the ARM elf linker hash table from a link_info structure. */
2174 #define elf32_arm_hash_table(info) \
2175 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2177 /* ARM ELF linker hash table. */
2178 struct elf32_arm_link_hash_table
2180 /* The main hash table. */
2181 struct elf_link_hash_table root;
2183 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2184 bfd_size_type thumb_glue_size;
2186 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2187 bfd_size_type arm_glue_size;
2189 /* The size in bytes of the section containing glue for VFP11 erratum
2191 bfd_size_type vfp11_erratum_glue_size;
2193 /* An arbitrary input BFD chosen to hold the glue sections. */
2194 bfd * bfd_of_glue_owner;
2196 /* Nonzero to output a BE8 image. */
2199 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2200 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2203 /* The relocation to use for R_ARM_TARGET2 relocations. */
2206 /* Nonzero to fix BX instructions for ARMv4 targets. */
2209 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2212 /* What sort of code sequences we should look for which may trigger the
2213 VFP11 denorm erratum. */
2214 bfd_arm_vfp11_fix vfp11_fix;
2216 /* Global counter for the number of fixes we have emitted. */
2217 int num_vfp11_fixes;
2219 /* Nonzero to force PIC branch veneers. */
2222 /* The number of bytes in the initial entry in the PLT. */
2223 bfd_size_type plt_header_size;
2225 /* The number of bytes in the subsequent PLT etries. */
2226 bfd_size_type plt_entry_size;
2228 /* True if the target system is VxWorks. */
2231 /* True if the target system is Symbian OS. */
2234 /* True if the target uses REL relocations. */
2237 /* Short-cuts to get to dynamic linker sections. */
2246 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2249 /* Data for R_ARM_TLS_LDM32 relocations. */
2251 bfd_signed_vma refcount;
2255 /* Small local sym to section mapping cache. */
2256 struct sym_sec_cache sym_sec;
2258 /* For convenience in allocate_dynrelocs. */
2262 /* Create an entry in an ARM ELF linker hash table. */
2264 static struct bfd_hash_entry *
2265 elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2266 struct bfd_hash_table * table,
2267 const char * string)
2269 struct elf32_arm_link_hash_entry * ret =
2270 (struct elf32_arm_link_hash_entry *) entry;
2272 /* Allocate the structure if it has not already been allocated by a
2274 if (ret == (struct elf32_arm_link_hash_entry *) NULL)
2275 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2277 return (struct bfd_hash_entry *) ret;
2279 /* Call the allocation method of the superclass. */
2280 ret = ((struct elf32_arm_link_hash_entry *)
2281 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2285 ret->relocs_copied = NULL;
2286 ret->tls_type = GOT_UNKNOWN;
2287 ret->plt_thumb_refcount = 0;
2288 ret->plt_got_offset = -1;
2289 ret->export_glue = NULL;
2292 return (struct bfd_hash_entry *) ret;
2295 /* Return true if NAME is the name of the relocation section associated
2299 reloc_section_p (struct elf32_arm_link_hash_table *htab,
2300 const char *name, asection *s)
2303 return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0;
2305 return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0;
2308 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2309 shortcuts to them in our hash table. */
2312 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2314 struct elf32_arm_link_hash_table *htab;
2316 htab = elf32_arm_hash_table (info);
2317 /* BPABI objects never have a GOT, or associated sections. */
2318 if (htab->symbian_p)
2321 if (! _bfd_elf_create_got_section (dynobj, info))
2324 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2325 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2326 if (!htab->sgot || !htab->sgotplt)
2329 htab->srelgot = bfd_make_section_with_flags (dynobj,
2330 RELOC_SECTION (htab, ".got"),
2331 (SEC_ALLOC | SEC_LOAD
2334 | SEC_LINKER_CREATED
2336 if (htab->srelgot == NULL
2337 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2342 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2343 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2347 elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2349 struct elf32_arm_link_hash_table *htab;
2351 htab = elf32_arm_hash_table (info);
2352 if (!htab->sgot && !create_got_section (dynobj, info))
2355 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2358 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2359 htab->srelplt = bfd_get_section_by_name (dynobj,
2360 RELOC_SECTION (htab, ".plt"));
2361 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2363 htab->srelbss = bfd_get_section_by_name (dynobj,
2364 RELOC_SECTION (htab, ".bss"));
2366 if (htab->vxworks_p)
2368 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2373 htab->plt_header_size = 0;
2374 htab->plt_entry_size
2375 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2379 htab->plt_header_size
2380 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2381 htab->plt_entry_size
2382 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2389 || (!info->shared && !htab->srelbss))
2395 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2398 elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
2399 struct elf_link_hash_entry *dir,
2400 struct elf_link_hash_entry *ind)
2402 struct elf32_arm_link_hash_entry *edir, *eind;
2404 edir = (struct elf32_arm_link_hash_entry *) dir;
2405 eind = (struct elf32_arm_link_hash_entry *) ind;
2407 if (eind->relocs_copied != NULL)
2409 if (edir->relocs_copied != NULL)
2411 struct elf32_arm_relocs_copied **pp;
2412 struct elf32_arm_relocs_copied *p;
2414 /* Add reloc counts against the indirect sym to the direct sym
2415 list. Merge any entries against the same section. */
2416 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2418 struct elf32_arm_relocs_copied *q;
2420 for (q = edir->relocs_copied; q != NULL; q = q->next)
2421 if (q->section == p->section)
2423 q->pc_count += p->pc_count;
2424 q->count += p->count;
2431 *pp = edir->relocs_copied;
2434 edir->relocs_copied = eind->relocs_copied;
2435 eind->relocs_copied = NULL;
2438 if (ind->root.type == bfd_link_hash_indirect)
2440 /* Copy over PLT info. */
2441 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2442 eind->plt_thumb_refcount = 0;
2444 if (dir->got.refcount <= 0)
2446 edir->tls_type = eind->tls_type;
2447 eind->tls_type = GOT_UNKNOWN;
2451 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2454 /* Create an ARM elf linker hash table. */
2456 static struct bfd_link_hash_table *
2457 elf32_arm_link_hash_table_create (bfd *abfd)
2459 struct elf32_arm_link_hash_table *ret;
2460 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
2462 ret = bfd_malloc (amt);
2466 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
2467 elf32_arm_link_hash_newfunc,
2468 sizeof (struct elf32_arm_link_hash_entry)))
2475 ret->sgotplt = NULL;
2476 ret->srelgot = NULL;
2478 ret->srelplt = NULL;
2479 ret->sdynbss = NULL;
2480 ret->srelbss = NULL;
2481 ret->srelplt2 = NULL;
2482 ret->thumb_glue_size = 0;
2483 ret->arm_glue_size = 0;
2484 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2485 ret->vfp11_erratum_glue_size = 0;
2486 ret->num_vfp11_fixes = 0;
2487 ret->bfd_of_glue_owner = NULL;
2488 ret->byteswap_code = 0;
2489 ret->target1_is_rel = 0;
2490 ret->target2_reloc = R_ARM_NONE;
2491 #ifdef FOUR_WORD_PLT
2492 ret->plt_header_size = 16;
2493 ret->plt_entry_size = 16;
2495 ret->plt_header_size = 20;
2496 ret->plt_entry_size = 12;
2503 ret->sym_sec.abfd = NULL;
2505 ret->tls_ldm_got.refcount = 0;
2507 return &ret->root.root;
2510 /* Locate the Thumb encoded calling stub for NAME. */
2512 static struct elf_link_hash_entry *
2513 find_thumb_glue (struct bfd_link_info *link_info,
2515 char **error_message)
2518 struct elf_link_hash_entry *hash;
2519 struct elf32_arm_link_hash_table *hash_table;
2521 /* We need a pointer to the armelf specific hash table. */
2522 hash_table = elf32_arm_hash_table (link_info);
2524 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2525 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
2527 BFD_ASSERT (tmp_name);
2529 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2531 hash = elf_link_hash_lookup
2532 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2535 asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
2543 /* Locate the ARM encoded calling stub for NAME. */
2545 static struct elf_link_hash_entry *
2546 find_arm_glue (struct bfd_link_info *link_info,
2548 char **error_message)
2551 struct elf_link_hash_entry *myh;
2552 struct elf32_arm_link_hash_table *hash_table;
2554 /* We need a pointer to the elfarm specific hash table. */
2555 hash_table = elf32_arm_hash_table (link_info);
2557 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2558 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
2560 BFD_ASSERT (tmp_name);
2562 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2564 myh = elf_link_hash_lookup
2565 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2568 asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
2576 /* ARM->Thumb glue (static images):
2580 ldr r12, __func_addr
2583 .word func @ behave as if you saw a ARM_32 reloc.
2585 (relocatable images)
2588 ldr r12, __func_offset
2595 #define ARM2THUMB_STATIC_GLUE_SIZE 12
2596 static const insn32 a2t1_ldr_insn = 0xe59fc000;
2597 static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
2598 static const insn32 a2t3_func_addr_insn = 0x00000001;
2600 #define ARM2THUMB_PIC_GLUE_SIZE 16
2601 static const insn32 a2t1p_ldr_insn = 0xe59fc004;
2602 static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
2603 static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
2605 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
2609 __func_from_thumb: __func_from_thumb:
2611 nop ldr r6, __func_addr
2613 __func_change_to_arm: bx r6
2615 __func_back_to_thumb:
2621 #define THUMB2ARM_GLUE_SIZE 8
2622 static const insn16 t2a1_bx_pc_insn = 0x4778;
2623 static const insn16 t2a2_noop_insn = 0x46c0;
2624 static const insn32 t2a3_b_insn = 0xea000000;
2626 #define VFP11_ERRATUM_VENEER_SIZE 8
2628 #ifndef ELFARM_NABI_C_INCLUDED
2630 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
2634 struct elf32_arm_link_hash_table * globals;
2636 globals = elf32_arm_hash_table (info);
2638 BFD_ASSERT (globals != NULL);
2640 if (globals->arm_glue_size != 0)
2642 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2644 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2645 ARM2THUMB_GLUE_SECTION_NAME);
2647 BFD_ASSERT (s != NULL);
2649 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size);
2651 BFD_ASSERT (s->size == globals->arm_glue_size);
2655 if (globals->thumb_glue_size != 0)
2657 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2659 s = bfd_get_section_by_name
2660 (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2662 BFD_ASSERT (s != NULL);
2664 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size);
2666 BFD_ASSERT (s->size == globals->thumb_glue_size);
2670 if (globals->vfp11_erratum_glue_size != 0)
2672 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2674 s = bfd_get_section_by_name
2675 (globals->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
2677 BFD_ASSERT (s != NULL);
2679 foo = bfd_alloc (globals->bfd_of_glue_owner,
2680 globals->vfp11_erratum_glue_size);
2682 BFD_ASSERT (s->size == globals->vfp11_erratum_glue_size);
2689 /* Allocate space and symbols for calling a Thumb function from Arm mode.
2690 returns the symbol identifying teh stub. */
2691 static struct elf_link_hash_entry *
2692 record_arm_to_thumb_glue (struct bfd_link_info * link_info,
2693 struct elf_link_hash_entry * h)
2695 const char * name = h->root.root.string;
2698 struct elf_link_hash_entry * myh;
2699 struct bfd_link_hash_entry * bh;
2700 struct elf32_arm_link_hash_table * globals;
2704 globals = elf32_arm_hash_table (link_info);
2706 BFD_ASSERT (globals != NULL);
2707 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2709 s = bfd_get_section_by_name
2710 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
2712 BFD_ASSERT (s != NULL);
2714 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
2716 BFD_ASSERT (tmp_name);
2718 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2720 myh = elf_link_hash_lookup
2721 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
2725 /* We've already seen this guy. */
2730 /* The only trick here is using hash_table->arm_glue_size as the value.
2731 Even though the section isn't allocated yet, this is where we will be
2734 val = globals->arm_glue_size + 1;
2735 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
2736 tmp_name, BSF_GLOBAL, s, val,
2737 NULL, TRUE, FALSE, &bh);
2739 myh = (struct elf_link_hash_entry *) bh;
2740 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2741 myh->forced_local = 1;
2745 if (link_info->shared || globals->root.is_relocatable_executable
2746 || globals->pic_veneer)
2747 size = ARM2THUMB_PIC_GLUE_SIZE;
2749 size = ARM2THUMB_STATIC_GLUE_SIZE;
2752 globals->arm_glue_size += size;
2758 record_thumb_to_arm_glue (struct bfd_link_info *link_info,
2759 struct elf_link_hash_entry *h)
2761 const char *name = h->root.root.string;
2764 struct elf_link_hash_entry *myh;
2765 struct bfd_link_hash_entry *bh;
2766 struct elf32_arm_link_hash_table *hash_table;
2769 hash_table = elf32_arm_hash_table (link_info);
2771 BFD_ASSERT (hash_table != NULL);
2772 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2774 s = bfd_get_section_by_name
2775 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2777 BFD_ASSERT (s != NULL);
2779 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2780 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
2782 BFD_ASSERT (tmp_name);
2784 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2786 myh = elf_link_hash_lookup
2787 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2791 /* We've already seen this guy. */
2797 val = hash_table->thumb_glue_size + 1;
2798 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2799 tmp_name, BSF_GLOBAL, s, val,
2800 NULL, TRUE, FALSE, &bh);
2802 /* If we mark it 'Thumb', the disassembler will do a better job. */
2803 myh = (struct elf_link_hash_entry *) bh;
2804 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
2805 myh->forced_local = 1;
2809 #define CHANGE_TO_ARM "__%s_change_to_arm"
2810 #define BACK_FROM_ARM "__%s_back_from_arm"
2812 /* Allocate another symbol to mark where we switch to Arm mode. */
2813 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2814 + strlen (CHANGE_TO_ARM) + 1);
2816 BFD_ASSERT (tmp_name);
2818 sprintf (tmp_name, CHANGE_TO_ARM, name);
2821 val = hash_table->thumb_glue_size + 4,
2822 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2823 tmp_name, BSF_LOCAL, s, val,
2824 NULL, TRUE, FALSE, &bh);
2828 s->size += THUMB2ARM_GLUE_SIZE;
2829 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
2835 /* Add an entry to the code/data map for section SEC. */
2838 elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
2840 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
2841 unsigned int newidx;
2843 if (sec_data->map == NULL)
2845 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
2846 sec_data->mapcount = 0;
2847 sec_data->mapsize = 1;
2850 newidx = sec_data->mapcount++;
2852 if (sec_data->mapcount > sec_data->mapsize)
2854 sec_data->mapsize *= 2;
2855 sec_data->map = bfd_realloc (sec_data->map, sec_data->mapsize
2856 * sizeof (elf32_arm_section_map));
2859 sec_data->map[newidx].vma = vma;
2860 sec_data->map[newidx].type = type;
2864 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
2865 veneers are handled for now. */
2868 record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
2869 elf32_vfp11_erratum_list *branch,
2871 asection *branch_sec,
2872 unsigned int offset)
2875 struct elf32_arm_link_hash_table *hash_table;
2877 struct elf_link_hash_entry *myh;
2878 struct bfd_link_hash_entry *bh;
2880 struct _arm_elf_section_data *sec_data;
2882 elf32_vfp11_erratum_list *newerr;
2884 hash_table = elf32_arm_hash_table (link_info);
2886 BFD_ASSERT (hash_table != NULL);
2887 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2889 s = bfd_get_section_by_name
2890 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
2892 sec_data = elf32_arm_section_data (s);
2894 BFD_ASSERT (s != NULL);
2896 tmp_name = bfd_malloc ((bfd_size_type) strlen
2897 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
2899 BFD_ASSERT (tmp_name);
2901 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
2902 hash_table->num_vfp11_fixes);
2904 myh = elf_link_hash_lookup
2905 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
2907 BFD_ASSERT (myh == NULL);
2910 val = hash_table->vfp11_erratum_glue_size;
2911 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2912 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
2913 NULL, TRUE, FALSE, &bh);
2915 myh = (struct elf_link_hash_entry *) bh;
2916 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2917 myh->forced_local = 1;
2919 /* Link veneer back to calling location. */
2920 errcount = ++(sec_data->erratumcount);
2921 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
2923 newerr->type = VFP11_ERRATUM_ARM_VENEER;
2925 newerr->u.v.branch = branch;
2926 newerr->u.v.id = hash_table->num_vfp11_fixes;
2927 branch->u.b.veneer = newerr;
2929 newerr->next = sec_data->erratumlist;
2930 sec_data->erratumlist = newerr;
2932 /* A symbol for the return from the veneer. */
2933 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
2934 hash_table->num_vfp11_fixes);
2936 myh = elf_link_hash_lookup
2937 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
2944 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
2945 branch_sec, val, NULL, TRUE, FALSE, &bh);
2947 myh = (struct elf_link_hash_entry *) bh;
2948 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2949 myh->forced_local = 1;
2953 /* Generate a mapping symbol for the veneer section, and explicitly add an
2954 entry for that symbol to the code/data map for the section. */
2955 if (hash_table->vfp11_erratum_glue_size == 0)
2958 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
2959 ever requires this erratum fix. */
2960 _bfd_generic_link_add_one_symbol (link_info,
2961 hash_table->bfd_of_glue_owner, "$a",
2962 BSF_LOCAL, s, 0, NULL,
2965 myh = (struct elf_link_hash_entry *) bh;
2966 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
2967 myh->forced_local = 1;
2969 /* The elf32_arm_init_maps function only cares about symbols from input
2970 BFDs. We must make a note of this generated mapping symbol
2971 ourselves so that code byteswapping works properly in
2972 elf32_arm_write_section. */
2973 elf32_arm_section_map_add (s, 'a', 0);
2976 s->size += VFP11_ERRATUM_VENEER_SIZE;
2977 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
2978 hash_table->num_vfp11_fixes++;
2980 /* The offset of the veneer. */
2984 /* Add the glue sections to ABFD. This function is called from the
2985 linker scripts in ld/emultempl/{armelf}.em. */
2988 bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
2989 struct bfd_link_info *info)
2994 /* If we are only performing a partial
2995 link do not bother adding the glue. */
2996 if (info->relocatable)
2999 sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
3003 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
3004 will prevent elf_link_input_bfd() from processing the contents
3006 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3007 | SEC_CODE | SEC_READONLY);
3009 sec = bfd_make_section_with_flags (abfd,
3010 ARM2THUMB_GLUE_SECTION_NAME,
3014 || !bfd_set_section_alignment (abfd, sec, 2))
3017 /* Set the gc mark to prevent the section from being removed by garbage
3018 collection, despite the fact that no relocs refer to this section. */
3022 sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
3026 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3027 | SEC_CODE | SEC_READONLY);
3029 sec = bfd_make_section_with_flags (abfd,
3030 THUMB2ARM_GLUE_SECTION_NAME,
3034 || !bfd_set_section_alignment (abfd, sec, 2))
3040 sec = bfd_get_section_by_name (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME);
3044 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3045 | SEC_CODE | SEC_READONLY);
3047 sec = bfd_make_section_with_flags (abfd,
3048 VFP11_ERRATUM_VENEER_SECTION_NAME,
3052 || !bfd_set_section_alignment (abfd, sec, 2))
3061 /* Select a BFD to be used to hold the sections used by the glue code.
3062 This function is called from the linker scripts in ld/emultempl/
3066 bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
3068 struct elf32_arm_link_hash_table *globals;
3070 /* If we are only performing a partial link
3071 do not bother getting a bfd to hold the glue. */
3072 if (info->relocatable)
3075 /* Make sure we don't attach the glue sections to a dynamic object. */
3076 BFD_ASSERT (!(abfd->flags & DYNAMIC));
3078 globals = elf32_arm_hash_table (info);
3080 BFD_ASSERT (globals != NULL);
3082 if (globals->bfd_of_glue_owner != NULL)
3085 /* Save the bfd for later use. */
3086 globals->bfd_of_glue_owner = abfd;
3091 static void check_use_blx(struct elf32_arm_link_hash_table *globals)
3093 if (elf32_arm_get_eabi_attr_int (globals->obfd, Tag_CPU_arch) > 2)
3094 globals->use_blx = 1;
3098 bfd_elf32_arm_process_before_allocation (bfd *abfd,
3099 struct bfd_link_info *link_info)
3101 Elf_Internal_Shdr *symtab_hdr;
3102 Elf_Internal_Rela *internal_relocs = NULL;
3103 Elf_Internal_Rela *irel, *irelend;
3104 bfd_byte *contents = NULL;
3107 struct elf32_arm_link_hash_table *globals;
3109 /* If we are only performing a partial link do not bother
3110 to construct any glue. */
3111 if (link_info->relocatable)
3114 /* Here we have a bfd that is to be included on the link. We have a hook
3115 to do reloc rummaging, before section sizes are nailed down. */
3116 globals = elf32_arm_hash_table (link_info);
3117 check_use_blx (globals);
3119 BFD_ASSERT (globals != NULL);
3120 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3122 if (globals->byteswap_code && !bfd_big_endian (abfd))
3124 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
3129 /* Rummage around all the relocs and map the glue vectors. */
3130 sec = abfd->sections;
3135 for (; sec != NULL; sec = sec->next)
3137 if (sec->reloc_count == 0)
3140 if ((sec->flags & SEC_EXCLUDE) != 0)
3143 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3145 /* Load the relocs. */
3147 = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL,
3148 (Elf_Internal_Rela *) NULL, FALSE);
3150 if (internal_relocs == NULL)
3153 irelend = internal_relocs + sec->reloc_count;
3154 for (irel = internal_relocs; irel < irelend; irel++)
3157 unsigned long r_index;
3159 struct elf_link_hash_entry *h;
3161 r_type = ELF32_R_TYPE (irel->r_info);
3162 r_index = ELF32_R_SYM (irel->r_info);
3164 /* These are the only relocation types we care about. */
3165 if ( r_type != R_ARM_PC24
3166 && r_type != R_ARM_PLT32
3167 && r_type != R_ARM_CALL
3168 && r_type != R_ARM_JUMP24
3169 && r_type != R_ARM_THM_CALL)
3172 /* Get the section contents if we haven't done so already. */
3173 if (contents == NULL)
3175 /* Get cached copy if it exists. */
3176 if (elf_section_data (sec)->this_hdr.contents != NULL)
3177 contents = elf_section_data (sec)->this_hdr.contents;
3180 /* Go get them off disk. */
3181 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
3186 /* If the relocation is not against a symbol it cannot concern us. */
3189 /* We don't care about local symbols. */
3190 if (r_index < symtab_hdr->sh_info)
3193 /* This is an external symbol. */
3194 r_index -= symtab_hdr->sh_info;
3195 h = (struct elf_link_hash_entry *)
3196 elf_sym_hashes (abfd)[r_index];
3198 /* If the relocation is against a static symbol it must be within
3199 the current section and so cannot be a cross ARM/Thumb relocation. */
3203 /* If the call will go through a PLT entry then we do not need
3205 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
3214 /* This one is a call from arm code. We need to look up
3215 the target of the call. If it is a thumb target, we
3217 if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC
3218 && !(r_type == R_ARM_CALL && globals->use_blx))
3219 record_arm_to_thumb_glue (link_info, h);
3222 case R_ARM_THM_CALL:
3223 /* This one is a call from thumb code. We look
3224 up the target of the call. If it is not a thumb
3225 target, we insert glue. */
3226 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC && !globals->use_blx)
3227 record_thumb_to_arm_glue (link_info, h);
3235 if (contents != NULL
3236 && elf_section_data (sec)->this_hdr.contents != contents)
3240 if (internal_relocs != NULL
3241 && elf_section_data (sec)->relocs != internal_relocs)
3242 free (internal_relocs);
3243 internal_relocs = NULL;
3249 if (contents != NULL
3250 && elf_section_data (sec)->this_hdr.contents != contents)
3252 if (internal_relocs != NULL
3253 && elf_section_data (sec)->relocs != internal_relocs)
3254 free (internal_relocs);
3261 /* Initialise maps of ARM/Thumb/data for input BFDs. */
3264 bfd_elf32_arm_init_maps (bfd *abfd)
3266 Elf_Internal_Sym *isymbuf;
3267 Elf_Internal_Shdr *hdr;
3268 unsigned int i, localsyms;
3270 if ((abfd->flags & DYNAMIC) != 0)
3273 hdr = &elf_tdata (abfd)->symtab_hdr;
3274 localsyms = hdr->sh_info;
3276 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
3277 should contain the number of local symbols, which should come before any
3278 global symbols. Mapping symbols are always local. */
3279 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
3282 /* No internal symbols read? Skip this BFD. */
3283 if (isymbuf == NULL)
3286 for (i = 0; i < localsyms; i++)
3288 Elf_Internal_Sym *isym = &isymbuf[i];
3289 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3293 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
3295 name = bfd_elf_string_from_elf_section (abfd,
3296 hdr->sh_link, isym->st_name);
3298 if (bfd_is_arm_special_symbol_name (name,
3299 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
3300 elf32_arm_section_map_add (sec, name[1], isym->st_value);
3307 bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
3309 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
3310 aeabi_attribute *out_attr = elf32_arm_tdata (obfd)->known_eabi_attributes;
3312 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
3313 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
3315 switch (globals->vfp11_fix)
3317 case BFD_ARM_VFP11_FIX_DEFAULT:
3318 case BFD_ARM_VFP11_FIX_NONE:
3319 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
3323 /* Give a warning, but do as the user requests anyway. */
3324 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
3325 "workaround is not necessary for target architecture"), obfd);
3328 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
3329 /* For earlier architectures, we might need the workaround, but do not
3330 enable it by default. If users is running with broken hardware, they
3331 must enable the erratum fix explicitly. */
3332 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
3336 enum bfd_arm_vfp11_pipe {
3343 /* Return a VFP register number. This is encoded as RX:X for single-precision
3344 registers, or X:RX for double-precision registers, where RX is the group of
3345 four bits in the instruction encoding and X is the single extension bit.
3346 RX and X fields are specified using their lowest (starting) bit. The return
3349 0...31: single-precision registers s0...s31
3350 32...63: double-precision registers d0...d31.
3352 Although X should be zero for VFP11 (encoding d0...d15 only), we might
3353 encounter VFP3 instructions, so we allow the full range for DP registers. */
3356 bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
3360 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
3362 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
3365 /* Set bits in *WMASK according to a register number REG as encoded by
3366 bfd_arm_vfp11_regno(). Ignore d16-d31. */
3369 bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
3374 *wmask |= 3 << ((reg - 32) * 2);
3377 /* Return TRUE if WMASK overwrites anything in REGS. */
3380 bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
3384 for (i = 0; i < numregs; i++)
3386 unsigned int reg = regs[i];
3388 if (reg < 32 && (wmask & (1 << reg)) != 0)
3396 if ((wmask & (3 << (reg * 2))) != 0)
3403 /* In this function, we're interested in two things: finding input registers
3404 for VFP data-processing instructions, and finding the set of registers which
3405 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
3406 hold the written set, so FLDM etc. are easy to deal with (we're only
3407 interested in 32 SP registers or 16 dp registers, due to the VFP version
3408 implemented by the chip in question). DP registers are marked by setting
3409 both SP registers in the write mask). */
3411 static enum bfd_arm_vfp11_pipe
3412 bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
3415 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
3416 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
3418 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
3421 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
3422 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
3424 pqrs = ((insn & 0x00800000) >> 20)
3425 | ((insn & 0x00300000) >> 19)
3426 | ((insn & 0x00000040) >> 6);
3430 case 0: /* fmac[sd]. */
3431 case 1: /* fnmac[sd]. */
3432 case 2: /* fmsc[sd]. */
3433 case 3: /* fnmsc[sd]. */
3435 bfd_arm_vfp11_write_mask (destmask, fd);
3437 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
3442 case 4: /* fmul[sd]. */
3443 case 5: /* fnmul[sd]. */
3444 case 6: /* fadd[sd]. */
3445 case 7: /* fsub[sd]. */
3449 case 8: /* fdiv[sd]. */
3452 bfd_arm_vfp11_write_mask (destmask, fd);
3453 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
3458 case 15: /* extended opcode. */
3460 unsigned int extn = ((insn >> 15) & 0x1e)
3461 | ((insn >> 7) & 1);
3465 case 0: /* fcpy[sd]. */
3466 case 1: /* fabs[sd]. */
3467 case 2: /* fneg[sd]. */
3468 case 8: /* fcmp[sd]. */
3469 case 9: /* fcmpe[sd]. */
3470 case 10: /* fcmpz[sd]. */
3471 case 11: /* fcmpez[sd]. */
3472 case 16: /* fuito[sd]. */
3473 case 17: /* fsito[sd]. */
3474 case 24: /* ftoui[sd]. */
3475 case 25: /* ftouiz[sd]. */
3476 case 26: /* ftosi[sd]. */
3477 case 27: /* ftosiz[sd]. */
3478 /* These instructions will not bounce due to underflow. */
3483 case 3: /* fsqrt[sd]. */
3484 /* fsqrt cannot underflow, but it can (perhaps) overwrite
3485 registers to cause the erratum in previous instructions. */
3486 bfd_arm_vfp11_write_mask (destmask, fd);
3490 case 15: /* fcvt{ds,sd}. */
3494 bfd_arm_vfp11_write_mask (destmask, fd);
3496 /* Only FCVTSD can underflow. */
3497 if ((insn & 0x100) != 0)
3516 /* Two-register transfer. */
3517 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
3519 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
3521 if ((insn & 0x100000) == 0)
3524 bfd_arm_vfp11_write_mask (destmask, fm);
3527 bfd_arm_vfp11_write_mask (destmask, fm);
3528 bfd_arm_vfp11_write_mask (destmask, fm + 1);
3534 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
3536 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
3537 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
3541 case 0: /* Two-reg transfer. We should catch these above. */
3544 case 2: /* fldm[sdx]. */
3548 unsigned int i, offset = insn & 0xff;
3553 for (i = fd; i < fd + offset; i++)
3554 bfd_arm_vfp11_write_mask (destmask, i);
3558 case 4: /* fld[sd]. */
3560 bfd_arm_vfp11_write_mask (destmask, fd);
3569 /* Single-register transfer. Note L==0. */
3570 else if ((insn & 0x0f100e10) == 0x0e000a10)
3572 unsigned int opcode = (insn >> 21) & 7;
3573 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
3577 case 0: /* fmsr/fmdlr. */
3578 case 1: /* fmdhr. */
3579 /* Mark fmdhr and fmdlr as writing to the whole of the DP
3580 destination register. I don't know if this is exactly right,
3581 but it is the conservative choice. */
3582 bfd_arm_vfp11_write_mask (destmask, fn);
3596 static int elf32_arm_compare_mapping (const void * a, const void * b);
3599 /* Look for potentially-troublesome code sequences which might trigger the
3600 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
3601 (available from ARM) for details of the erratum. A short version is
3602 described in ld.texinfo. */
3605 bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
3608 bfd_byte *contents = NULL;
3610 int regs[3], numregs = 0;
3611 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
3612 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
3614 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
3615 The states transition as follows:
3617 0 -> 1 (vector) or 0 -> 2 (scalar)
3618 A VFP FMAC-pipeline instruction has been seen. Fill
3619 regs[0]..regs[numregs-1] with its input operands. Remember this
3620 instruction in 'first_fmac'.
3623 Any instruction, except for a VFP instruction which overwrites
3628 A VFP instruction has been seen which overwrites any of regs[*].
3629 We must make a veneer! Reset state to 0 before examining next
3633 If we fail to match anything in state 2, reset to state 0 and reset
3634 the instruction pointer to the instruction after 'first_fmac'.
3636 If the VFP11 vector mode is in use, there must be at least two unrelated
3637 instructions between anti-dependent VFP11 instructions to properly avoid
3638 triggering the erratum, hence the use of the extra state 1.
3641 /* If we are only performing a partial link do not bother
3642 to construct any glue. */
3643 if (link_info->relocatable)
3646 /* We should have chosen a fix type by the time we get here. */
3647 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
3649 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
3652 /* Skip if this bfd does not correspond to an ELF image. */
3653 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
3656 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3658 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
3659 struct _arm_elf_section_data *sec_data;
3661 /* If we don't have executable progbits, we're not interested in this
3662 section. Also skip if section is to be excluded. */
3663 if (elf_section_type (sec) != SHT_PROGBITS
3664 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
3665 || (sec->flags & SEC_EXCLUDE) != 0
3666 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
3669 sec_data = elf32_arm_section_data (sec);
3671 if (sec_data->mapcount == 0)
3674 if (elf_section_data (sec)->this_hdr.contents != NULL)
3675 contents = elf_section_data (sec)->this_hdr.contents;
3676 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
3679 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
3680 elf32_arm_compare_mapping);
3682 for (span = 0; span < sec_data->mapcount; span++)
3684 unsigned int span_start = sec_data->map[span].vma;
3685 unsigned int span_end = (span == sec_data->mapcount - 1)
3686 ? sec->size : sec_data->map[span + 1].vma;
3687 char span_type = sec_data->map[span].type;
3689 /* FIXME: Only ARM mode is supported at present. We may need to
3690 support Thumb-2 mode also at some point. */
3691 if (span_type != 'a')
3694 for (i = span_start; i < span_end;)
3696 unsigned int next_i = i + 4;
3697 unsigned int insn = bfd_big_endian (abfd)
3698 ? (contents[i] << 24)
3699 | (contents[i + 1] << 16)
3700 | (contents[i + 2] << 8)
3702 : (contents[i + 3] << 24)
3703 | (contents[i + 2] << 16)
3704 | (contents[i + 1] << 8)
3706 unsigned int writemask = 0;
3707 enum bfd_arm_vfp11_pipe pipe;
3712 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
3714 /* I'm assuming the VFP11 erratum can trigger with denorm
3715 operands on either the FMAC or the DS pipeline. This might
3716 lead to slightly overenthusiastic veneer insertion. */
3717 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
3719 state = use_vector ? 1 : 2;
3721 veneer_of_insn = insn;
3727 int other_regs[3], other_numregs;
3728 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
3731 if (pipe != VFP11_BAD
3732 && bfd_arm_vfp11_antidependency (writemask, regs,
3742 int other_regs[3], other_numregs;
3743 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
3746 if (pipe != VFP11_BAD
3747 && bfd_arm_vfp11_antidependency (writemask, regs,
3753 next_i = first_fmac + 4;
3759 abort (); /* Should be unreachable. */
3764 elf32_vfp11_erratum_list *newerr
3765 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
3768 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
3770 newerr->u.b.vfp_insn = veneer_of_insn;
3775 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
3782 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
3787 newerr->next = sec_data->erratumlist;
3788 sec_data->erratumlist = newerr;
3797 if (contents != NULL
3798 && elf_section_data (sec)->this_hdr.contents != contents)
3806 if (contents != NULL
3807 && elf_section_data (sec)->this_hdr.contents != contents)
3813 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
3814 after sections have been laid out, using specially-named symbols. */
3817 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
3818 struct bfd_link_info *link_info)
3821 struct elf32_arm_link_hash_table *globals;
3824 if (link_info->relocatable)
3827 /* Skip if this bfd does not correspond to an ELF image. */
3828 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
3831 globals = elf32_arm_hash_table (link_info);
3833 tmp_name = bfd_malloc ((bfd_size_type) strlen
3834 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
3836 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3838 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
3839 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
3841 for (; errnode != NULL; errnode = errnode->next)
3843 struct elf_link_hash_entry *myh;
3846 switch (errnode->type)
3848 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
3849 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
3850 /* Find veneer symbol. */
3851 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
3852 errnode->u.b.veneer->u.v.id);
3854 myh = elf_link_hash_lookup
3855 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
3858 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
3859 "`%s'"), abfd, tmp_name);
3861 vma = myh->root.u.def.section->output_section->vma
3862 + myh->root.u.def.section->output_offset
3863 + myh->root.u.def.value;
3865 errnode->u.b.veneer->vma = vma;
3868 case VFP11_ERRATUM_ARM_VENEER:
3869 case VFP11_ERRATUM_THUMB_VENEER:
3870 /* Find return location. */
3871 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
3874 myh = elf_link_hash_lookup
3875 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
3878 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
3879 "`%s'"), abfd, tmp_name);
3881 vma = myh->root.u.def.section->output_section->vma
3882 + myh->root.u.def.section->output_offset
3883 + myh->root.u.def.value;
3885 errnode->u.v.branch->vma = vma;
3898 /* Set target relocation values needed during linking. */
3901 bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
3902 struct bfd_link_info *link_info,
3904 char * target2_type,
3907 bfd_arm_vfp11_fix vfp11_fix,
3908 int no_enum_warn, int pic_veneer)
3910 struct elf32_arm_link_hash_table *globals;
3912 globals = elf32_arm_hash_table (link_info);
3914 globals->target1_is_rel = target1_is_rel;
3915 if (strcmp (target2_type, "rel") == 0)
3916 globals->target2_reloc = R_ARM_REL32;
3917 else if (strcmp (target2_type, "abs") == 0)
3918 globals->target2_reloc = R_ARM_ABS32;
3919 else if (strcmp (target2_type, "got-rel") == 0)
3920 globals->target2_reloc = R_ARM_GOT_PREL;
3923 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
3926 globals->fix_v4bx = fix_v4bx;
3927 globals->use_blx |= use_blx;
3928 globals->vfp11_fix = vfp11_fix;
3929 globals->pic_veneer = pic_veneer;
3931 elf32_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
3934 /* The thumb form of a long branch is a bit finicky, because the offset
3935 encoding is split over two fields, each in it's own instruction. They
3936 can occur in any order. So given a thumb form of long branch, and an
3937 offset, insert the offset into the thumb branch and return finished
3940 It takes two thumb instructions to encode the target address. Each has
3941 11 bits to invest. The upper 11 bits are stored in one (identified by
3942 H-0.. see below), the lower 11 bits are stored in the other (identified
3945 Combine together and shifted left by 1 (it's a half word address) and
3949 H-0, upper address-0 = 000
3951 H-1, lower address-0 = 800
3953 They can be ordered either way, but the arm tools I've seen always put
3956 XXX: Actually the order does matter. The second instruction (H-1)
3957 moves the computed address into the PC, so it must be the second one
3958 in the sequence. The problem, however is that whilst little endian code
3959 stores the instructions in HI then LOW order, big endian code does the
3962 #define LOW_HI_ORDER 0xF800F000
3963 #define HI_LOW_ORDER 0xF000F800
3966 insert_thumb_branch (insn32 br_insn, int rel_off)
3968 unsigned int low_bits;
3969 unsigned int high_bits;
3971 BFD_ASSERT ((rel_off & 1) != 1);
3973 rel_off >>= 1; /* Half word aligned address. */
3974 low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */
3975 high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */
3977 if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
3978 br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
3979 else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
3980 br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
3983 abort (); /* Error - not a valid branch instruction form. */
3989 /* Store an Arm insn into an output section not processed by
3990 elf32_arm_write_section. */
3993 put_arm_insn (struct elf32_arm_link_hash_table *htab,
3994 bfd * output_bfd, bfd_vma val, void * ptr)
3996 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3997 bfd_putl32 (val, ptr);
3999 bfd_putb32 (val, ptr);
4003 /* Store a 16-bit Thumb insn into an output section not processed by
4004 elf32_arm_write_section. */
4007 put_thumb_insn (struct elf32_arm_link_hash_table *htab,
4008 bfd * output_bfd, bfd_vma val, void * ptr)
4010 if (htab->byteswap_code != bfd_little_endian (output_bfd))
4011 bfd_putl16 (val, ptr);
4013 bfd_putb16 (val, ptr);
4017 /* Thumb code calling an ARM function. */
4020 elf32_thumb_to_arm_stub (struct bfd_link_info * info,
4024 asection * input_section,
4025 bfd_byte * hit_data,
4028 bfd_signed_vma addend,
4030 char **error_message)
4034 unsigned long int tmp;
4035 long int ret_offset;
4036 struct elf_link_hash_entry * myh;
4037 struct elf32_arm_link_hash_table * globals;
4039 myh = find_thumb_glue (info, name, error_message);
4043 globals = elf32_arm_hash_table (info);
4045 BFD_ASSERT (globals != NULL);
4046 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4048 my_offset = myh->root.u.def.value;
4050 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4051 THUMB2ARM_GLUE_SECTION_NAME);
4053 BFD_ASSERT (s != NULL);
4054 BFD_ASSERT (s->contents != NULL);
4055 BFD_ASSERT (s->output_section != NULL);
4057 if ((my_offset & 0x01) == 0x01)
4060 && sym_sec->owner != NULL
4061 && !INTERWORK_FLAG (sym_sec->owner))
4063 (*_bfd_error_handler)
4064 (_("%B(%s): warning: interworking not enabled.\n"
4065 " first occurrence: %B: thumb call to arm"),
4066 sym_sec->owner, input_bfd, name);
4072 myh->root.u.def.value = my_offset;
4074 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
4075 s->contents + my_offset);
4077 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
4078 s->contents + my_offset + 2);
4081 /* Address of destination of the stub. */
4082 ((bfd_signed_vma) val)
4084 /* Offset from the start of the current section
4085 to the start of the stubs. */
4087 /* Offset of the start of this stub from the start of the stubs. */
4089 /* Address of the start of the current section. */
4090 + s->output_section->vma)
4091 /* The branch instruction is 4 bytes into the stub. */
4093 /* ARM branches work from the pc of the instruction + 8. */
4096 put_arm_insn (globals, output_bfd,
4097 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
4098 s->contents + my_offset + 4);
4101 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
4103 /* Now go back and fix up the original BL insn to point to here. */
4105 /* Address of where the stub is located. */
4106 (s->output_section->vma + s->output_offset + my_offset)
4107 /* Address of where the BL is located. */
4108 - (input_section->output_section->vma + input_section->output_offset
4110 /* Addend in the relocation. */
4112 /* Biassing for PC-relative addressing. */
4115 tmp = bfd_get_32 (input_bfd, hit_data
4116 - input_section->vma);
4118 bfd_put_32 (output_bfd,
4119 (bfd_vma) insert_thumb_branch (tmp, ret_offset),
4120 hit_data - input_section->vma);
4125 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
4127 static struct elf_link_hash_entry *
4128 elf32_arm_create_thumb_stub (struct bfd_link_info * info,
4135 char **error_message)
4138 long int ret_offset;
4139 struct elf_link_hash_entry * myh;
4140 struct elf32_arm_link_hash_table * globals;
4142 myh = find_arm_glue (info, name, error_message);
4146 globals = elf32_arm_hash_table (info);
4148 BFD_ASSERT (globals != NULL);
4149 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4151 my_offset = myh->root.u.def.value;
4153 if ((my_offset & 0x01) == 0x01)
4156 && sym_sec->owner != NULL
4157 && !INTERWORK_FLAG (sym_sec->owner))
4159 (*_bfd_error_handler)
4160 (_("%B(%s): warning: interworking not enabled.\n"
4161 " first occurrence: %B: arm call to thumb"),
4162 sym_sec->owner, input_bfd, name);
4166 myh->root.u.def.value = my_offset;
4168 if (info->shared || globals->root.is_relocatable_executable
4169 || globals->pic_veneer)
4171 /* For relocatable objects we can't use absolute addresses,
4172 so construct the address from a relative offset. */
4173 /* TODO: If the offset is small it's probably worth
4174 constructing the address with adds. */
4175 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
4176 s->contents + my_offset);
4177 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
4178 s->contents + my_offset + 4);
4179 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
4180 s->contents + my_offset + 8);
4181 /* Adjust the offset by 4 for the position of the add,
4182 and 8 for the pipeline offset. */
4183 ret_offset = (val - (s->output_offset
4184 + s->output_section->vma
4187 bfd_put_32 (output_bfd, ret_offset,
4188 s->contents + my_offset + 12);
4192 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
4193 s->contents + my_offset);
4195 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
4196 s->contents + my_offset + 4);
4198 /* It's a thumb address. Add the low order bit. */
4199 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
4200 s->contents + my_offset + 8);
4204 BFD_ASSERT (my_offset <= globals->arm_glue_size);
4209 /* Arm code calling a Thumb function. */
4212 elf32_arm_to_thumb_stub (struct bfd_link_info * info,
4216 asection * input_section,
4217 bfd_byte * hit_data,
4220 bfd_signed_vma addend,
4222 char **error_message)
4224 unsigned long int tmp;
4227 long int ret_offset;
4228 struct elf_link_hash_entry * myh;
4229 struct elf32_arm_link_hash_table * globals;
4231 globals = elf32_arm_hash_table (info);
4233 BFD_ASSERT (globals != NULL);
4234 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4236 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4237 ARM2THUMB_GLUE_SECTION_NAME);
4238 BFD_ASSERT (s != NULL);
4239 BFD_ASSERT (s->contents != NULL);
4240 BFD_ASSERT (s->output_section != NULL);
4242 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
4243 sym_sec, val, s, error_message);
4247 my_offset = myh->root.u.def.value;
4248 tmp = bfd_get_32 (input_bfd, hit_data);
4249 tmp = tmp & 0xFF000000;
4251 /* Somehow these are both 4 too far, so subtract 8. */
4252 ret_offset = (s->output_offset
4254 + s->output_section->vma
4255 - (input_section->output_offset
4256 + input_section->output_section->vma
4260 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
4262 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
4267 /* Populate Arm stub for an exported Thumb function. */
4270 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
4272 struct bfd_link_info * info = (struct bfd_link_info *) inf;
4274 struct elf_link_hash_entry * myh;
4275 struct elf32_arm_link_hash_entry *eh;
4276 struct elf32_arm_link_hash_table * globals;
4279 char *error_message;
4281 eh = elf32_arm_hash_entry(h);
4282 /* Allocate stubs for exported Thumb functions on v4t. */
4283 if (eh->export_glue == NULL)
4286 globals = elf32_arm_hash_table (info);
4288 BFD_ASSERT (globals != NULL);
4289 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4291 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4292 ARM2THUMB_GLUE_SECTION_NAME);
4293 BFD_ASSERT (s != NULL);
4294 BFD_ASSERT (s->contents != NULL);
4295 BFD_ASSERT (s->output_section != NULL);
4297 sec = eh->export_glue->root.u.def.section;
4299 BFD_ASSERT (sec->output_section != NULL);
4301 val = eh->export_glue->root.u.def.value + sec->output_offset
4302 + sec->output_section->vma;
4303 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
4304 h->root.u.def.section->owner,
4305 globals->obfd, sec, val, s,
4311 /* Generate Arm stubs for exported Thumb symbols. */
4313 elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
4314 struct bfd_link_info *link_info)
4316 struct elf32_arm_link_hash_table * globals;
4321 globals = elf32_arm_hash_table (link_info);
4322 /* If blx is available then exported Thumb symbols are OK and there is
4324 if (globals->use_blx)
4327 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
4331 /* Some relocations map to different relocations depending on the
4332 target. Return the real relocation. */
4334 arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
4340 if (globals->target1_is_rel)
4346 return globals->target2_reloc;
4353 /* Return the base VMA address which should be subtracted from real addresses
4354 when resolving @dtpoff relocation.
4355 This is PT_TLS segment p_vaddr. */
4358 dtpoff_base (struct bfd_link_info *info)
4360 /* If tls_sec is NULL, we should have signalled an error already. */
4361 if (elf_hash_table (info)->tls_sec == NULL)
4363 return elf_hash_table (info)->tls_sec->vma;
4366 /* Return the relocation value for @tpoff relocation
4367 if STT_TLS virtual address is ADDRESS. */
4370 tpoff (struct bfd_link_info *info, bfd_vma address)
4372 struct elf_link_hash_table *htab = elf_hash_table (info);
4375 /* If tls_sec is NULL, we should have signalled an error already. */
4376 if (htab->tls_sec == NULL)
4378 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
4379 return address - htab->tls_sec->vma + base;
4382 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
4383 VALUE is the relocation value. */
4385 static bfd_reloc_status_type
4386 elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
4389 return bfd_reloc_overflow;
4391 value |= bfd_get_32 (abfd, data) & 0xfffff000;
4392 bfd_put_32 (abfd, value, data);
4393 return bfd_reloc_ok;
4396 /* For a given value of n, calculate the value of G_n as required to
4397 deal with group relocations. We return it in the form of an
4398 encoded constant-and-rotation, together with the final residual. If n is
4399 specified as less than zero, then final_residual is filled with the
4400 input value and no further action is performed. */
4403 calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
4407 bfd_vma encoded_g_n = 0;
4408 bfd_vma residual = value; /* Also known as Y_n. */
4410 for (current_n = 0; current_n <= n; current_n++)
4414 /* Calculate which part of the value to mask. */
4421 /* Determine the most significant bit in the residual and
4422 align the resulting value to a 2-bit boundary. */
4423 for (msb = 30; msb >= 0; msb -= 2)
4424 if (residual & (3 << msb))
4427 /* The desired shift is now (msb - 6), or zero, whichever
4434 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
4435 g_n = residual & (0xff << shift);
4436 encoded_g_n = (g_n >> shift)
4437 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
4439 /* Calculate the residual for the next time around. */
4443 *final_residual = residual;
4448 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
4449 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
4451 identify_add_or_sub(bfd_vma insn)
4453 int opcode = insn & 0x1e00000;
4455 if (opcode == 1 << 23) /* ADD */
4458 if (opcode == 1 << 22) /* SUB */
4464 /* Determine if we're dealing with a Thumb-2 object. */
4466 static int using_thumb2 (struct elf32_arm_link_hash_table *globals)
4468 int arch = elf32_arm_get_eabi_attr_int (globals->obfd, Tag_CPU_arch);
4469 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
4472 /* Perform a relocation as part of a final link. */
4474 static bfd_reloc_status_type
4475 elf32_arm_final_link_relocate (reloc_howto_type * howto,
4478 asection * input_section,
4479 bfd_byte * contents,
4480 Elf_Internal_Rela * rel,
4482 struct bfd_link_info * info,
4484 const char * sym_name,
4486 struct elf_link_hash_entry * h,
4487 bfd_boolean * unresolved_reloc_p,
4488 char **error_message)
4490 unsigned long r_type = howto->type;
4491 unsigned long r_symndx;
4492 bfd_byte * hit_data = contents + rel->r_offset;
4493 bfd * dynobj = NULL;
4494 Elf_Internal_Shdr * symtab_hdr;
4495 struct elf_link_hash_entry ** sym_hashes;
4496 bfd_vma * local_got_offsets;
4497 asection * sgot = NULL;
4498 asection * splt = NULL;
4499 asection * sreloc = NULL;
4501 bfd_signed_vma signed_addend;
4502 struct elf32_arm_link_hash_table * globals;
4504 globals = elf32_arm_hash_table (info);
4506 /* Some relocation type map to different relocations depending on the
4507 target. We pick the right one here. */
4508 r_type = arm_real_reloc_type (globals, r_type);
4509 if (r_type != howto->type)
4510 howto = elf32_arm_howto_from_type (r_type);
4512 /* If the start address has been set, then set the EF_ARM_HASENTRY
4513 flag. Setting this more than once is redundant, but the cost is
4514 not too high, and it keeps the code simple.
4516 The test is done here, rather than somewhere else, because the
4517 start address is only set just before the final link commences.
4519 Note - if the user deliberately sets a start address of 0, the
4520 flag will not be set. */
4521 if (bfd_get_start_address (output_bfd) != 0)
4522 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
4524 dynobj = elf_hash_table (info)->dynobj;
4527 sgot = bfd_get_section_by_name (dynobj, ".got");
4528 splt = bfd_get_section_by_name (dynobj, ".plt");
4530 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
4531 sym_hashes = elf_sym_hashes (input_bfd);
4532 local_got_offsets = elf_local_got_offsets (input_bfd);
4533 r_symndx = ELF32_R_SYM (rel->r_info);
4535 if (globals->use_rel)
4537 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
4539 if (addend & ((howto->src_mask + 1) >> 1))
4542 signed_addend &= ~ howto->src_mask;
4543 signed_addend |= addend;
4546 signed_addend = addend;
4549 addend = signed_addend = rel->r_addend;
4554 /* We don't need to find a value for this symbol. It's just a
4556 *unresolved_reloc_p = FALSE;
4557 return bfd_reloc_ok;
4560 if (!globals->vxworks_p)
4561 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
4565 case R_ARM_ABS32_NOI:
4567 case R_ARM_REL32_NOI:
4573 /* Handle relocations which should use the PLT entry. ABS32/REL32
4574 will use the symbol's value, which may point to a PLT entry, but we
4575 don't need to handle that here. If we created a PLT entry, all
4576 branches in this object should go to it. */
4577 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
4578 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
4581 && h->plt.offset != (bfd_vma) -1)
4583 /* If we've created a .plt section, and assigned a PLT entry to
4584 this function, it should not be known to bind locally. If
4585 it were, we would have cleared the PLT entry. */
4586 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
4588 value = (splt->output_section->vma
4589 + splt->output_offset
4591 *unresolved_reloc_p = FALSE;
4592 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4593 contents, rel->r_offset, value,
4597 /* When generating a shared object or relocatable executable, these
4598 relocations are copied into the output file to be resolved at
4600 if ((info->shared || globals->root.is_relocatable_executable)
4601 && (input_section->flags & SEC_ALLOC)
4602 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
4603 || !SYMBOL_CALLS_LOCAL (info, h))
4605 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4606 || h->root.type != bfd_link_hash_undefweak)
4607 && r_type != R_ARM_PC24
4608 && r_type != R_ARM_CALL
4609 && r_type != R_ARM_JUMP24
4610 && r_type != R_ARM_PREL31
4611 && r_type != R_ARM_PLT32)
4613 Elf_Internal_Rela outrel;
4615 bfd_boolean skip, relocate;
4617 *unresolved_reloc_p = FALSE;
4623 name = (bfd_elf_string_from_elf_section
4625 elf_elfheader (input_bfd)->e_shstrndx,
4626 elf_section_data (input_section)->rel_hdr.sh_name));
4628 return bfd_reloc_notsupported;
4630 BFD_ASSERT (reloc_section_p (globals, name, input_section));
4632 sreloc = bfd_get_section_by_name (dynobj, name);
4633 BFD_ASSERT (sreloc != NULL);
4639 outrel.r_addend = addend;
4641 _bfd_elf_section_offset (output_bfd, info, input_section,
4643 if (outrel.r_offset == (bfd_vma) -1)
4645 else if (outrel.r_offset == (bfd_vma) -2)
4646 skip = TRUE, relocate = TRUE;
4647 outrel.r_offset += (input_section->output_section->vma
4648 + input_section->output_offset);
4651 memset (&outrel, 0, sizeof outrel);
4656 || !h->def_regular))
4657 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4662 /* This symbol is local, or marked to become local. */
4663 if (sym_flags == STT_ARM_TFUNC)
4665 if (globals->symbian_p)
4669 /* On Symbian OS, the data segment and text segement
4670 can be relocated independently. Therefore, we
4671 must indicate the segment to which this
4672 relocation is relative. The BPABI allows us to
4673 use any symbol in the right segment; we just use
4674 the section symbol as it is convenient. (We
4675 cannot use the symbol given by "h" directly as it
4676 will not appear in the dynamic symbol table.)
4678 Note that the dynamic linker ignores the section
4679 symbol value, so we don't subtract osec->vma
4680 from the emitted reloc addend. */
4682 osec = sym_sec->output_section;
4684 osec = input_section->output_section;
4685 symbol = elf_section_data (osec)->dynindx;
4688 struct elf_link_hash_table *htab = elf_hash_table (info);
4690 if ((osec->flags & SEC_READONLY) == 0
4691 && htab->data_index_section != NULL)
4692 osec = htab->data_index_section;
4694 osec = htab->text_index_section;
4695 symbol = elf_section_data (osec)->dynindx;
4697 BFD_ASSERT (symbol != 0);
4700 /* On SVR4-ish systems, the dynamic loader cannot
4701 relocate the text and data segments independently,
4702 so the symbol does not matter. */
4704 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
4705 if (globals->use_rel)
4708 outrel.r_addend += value;
4711 loc = sreloc->contents;
4712 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
4713 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
4715 /* If this reloc is against an external symbol, we do not want to
4716 fiddle with the addend. Otherwise, we need to include the symbol
4717 value so that it becomes an addend for the dynamic reloc. */
4719 return bfd_reloc_ok;
4721 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4722 contents, rel->r_offset, value,
4725 else switch (r_type)
4728 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
4730 case R_ARM_XPC25: /* Arm BLX instruction. */
4733 case R_ARM_PC24: /* Arm B/BL instruction */
4735 if (r_type == R_ARM_XPC25)
4737 /* Check for Arm calling Arm function. */
4738 /* FIXME: Should we translate the instruction into a BL
4739 instruction instead ? */
4740 if (sym_flags != STT_ARM_TFUNC)
4741 (*_bfd_error_handler)
4742 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
4744 h ? h->root.root.string : "(local)");
4746 else if (r_type != R_ARM_CALL || !globals->use_blx)
4748 /* Check for Arm calling Thumb function. */
4749 if (sym_flags == STT_ARM_TFUNC)
4751 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
4752 output_bfd, input_section,
4753 hit_data, sym_sec, rel->r_offset,
4754 signed_addend, value,
4756 return bfd_reloc_ok;
4758 return bfd_reloc_dangerous;
4762 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
4764 S is the address of the symbol in the relocation.
4765 P is address of the instruction being relocated.
4766 A is the addend (extracted from the instruction) in bytes.
4768 S is held in 'value'.
4769 P is the base address of the section containing the
4770 instruction plus the offset of the reloc into that
4772 (input_section->output_section->vma +
4773 input_section->output_offset +
4775 A is the addend, converted into bytes, ie:
4778 Note: None of these operations have knowledge of the pipeline
4779 size of the processor, thus it is up to the assembler to
4780 encode this information into the addend. */
4781 value -= (input_section->output_section->vma
4782 + input_section->output_offset);
4783 value -= rel->r_offset;
4784 if (globals->use_rel)
4785 value += (signed_addend << howto->size);
4787 /* RELA addends do not have to be adjusted by howto->size. */
4788 value += signed_addend;
4790 signed_addend = value;
4791 signed_addend >>= howto->rightshift;
4793 /* It is not an error for an undefined weak reference to be
4794 out of range. Any program that branches to such a symbol
4795 is going to crash anyway, so there is no point worrying
4796 about getting the destination exactly right. */
4797 if (! h || h->root.type != bfd_link_hash_undefweak)
4799 /* Perform a signed range check. */
4800 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
4801 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
4802 return bfd_reloc_overflow;
4805 addend = (value & 2);
4807 value = (signed_addend & howto->dst_mask)
4808 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
4810 /* Set the H bit in the BLX instruction. */
4811 if (sym_flags == STT_ARM_TFUNC)
4816 value &= ~(bfd_vma)(1 << 24);
4818 if (r_type == R_ARM_CALL)
4820 /* Select the correct instruction (BL or BLX). */
4821 if (sym_flags == STT_ARM_TFUNC)
4825 value &= ~(bfd_vma)(1 << 28);
4833 if (sym_flags == STT_ARM_TFUNC)
4837 case R_ARM_ABS32_NOI:
4843 if (sym_flags == STT_ARM_TFUNC)
4845 value -= (input_section->output_section->vma
4846 + input_section->output_offset + rel->r_offset);
4849 case R_ARM_REL32_NOI:
4851 value -= (input_section->output_section->vma
4852 + input_section->output_offset + rel->r_offset);
4856 value -= (input_section->output_section->vma
4857 + input_section->output_offset + rel->r_offset);
4858 value += signed_addend;
4859 if (! h || h->root.type != bfd_link_hash_undefweak)
4861 /* Check for overflow */
4862 if ((value ^ (value >> 1)) & (1 << 30))
4863 return bfd_reloc_overflow;
4865 value &= 0x7fffffff;
4866 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
4867 if (sym_flags == STT_ARM_TFUNC)
4872 bfd_put_32 (input_bfd, value, hit_data);
4873 return bfd_reloc_ok;
4877 if ((long) value > 0x7f || (long) value < -0x80)
4878 return bfd_reloc_overflow;
4880 bfd_put_8 (input_bfd, value, hit_data);
4881 return bfd_reloc_ok;
4886 if ((long) value > 0x7fff || (long) value < -0x8000)
4887 return bfd_reloc_overflow;
4889 bfd_put_16 (input_bfd, value, hit_data);
4890 return bfd_reloc_ok;
4892 case R_ARM_THM_ABS5:
4893 /* Support ldr and str instructions for the thumb. */
4894 if (globals->use_rel)
4896 /* Need to refetch addend. */
4897 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
4898 /* ??? Need to determine shift amount from operand size. */
4899 addend >>= howto->rightshift;
4903 /* ??? Isn't value unsigned? */
4904 if ((long) value > 0x1f || (long) value < -0x10)
4905 return bfd_reloc_overflow;
4907 /* ??? Value needs to be properly shifted into place first. */
4908 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
4909 bfd_put_16 (input_bfd, value, hit_data);
4910 return bfd_reloc_ok;
4912 case R_ARM_THM_ALU_PREL_11_0:
4913 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
4916 bfd_signed_vma relocation;
4918 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
4919 | bfd_get_16 (input_bfd, hit_data + 2);
4921 if (globals->use_rel)
4923 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
4924 | ((insn & (1 << 26)) >> 15);
4925 if (insn & 0xf00000)
4926 signed_addend = -signed_addend;
4929 relocation = value + signed_addend;
4930 relocation -= (input_section->output_section->vma
4931 + input_section->output_offset
4934 value = abs (relocation);
4936 if (value >= 0x1000)
4937 return bfd_reloc_overflow;
4939 insn = (insn & 0xfb0f8f00) | (value & 0xff)
4940 | ((value & 0x700) << 4)
4941 | ((value & 0x800) << 15);
4945 bfd_put_16 (input_bfd, insn >> 16, hit_data);
4946 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
4948 return bfd_reloc_ok;
4951 case R_ARM_THM_PC12:
4952 /* Corresponds to: ldr.w reg, [pc, #offset]. */
4955 bfd_signed_vma relocation;
4957 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
4958 | bfd_get_16 (input_bfd, hit_data + 2);
4960 if (globals->use_rel)
4962 signed_addend = insn & 0xfff;
4963 if (!(insn & (1 << 23)))
4964 signed_addend = -signed_addend;
4967 relocation = value + signed_addend;
4968 relocation -= (input_section->output_section->vma
4969 + input_section->output_offset
4972 value = abs (relocation);
4974 if (value >= 0x1000)
4975 return bfd_reloc_overflow;
4977 insn = (insn & 0xff7ff000) | value;
4978 if (relocation >= 0)
4981 bfd_put_16 (input_bfd, insn >> 16, hit_data);
4982 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
4984 return bfd_reloc_ok;
4987 case R_ARM_THM_XPC22:
4988 case R_ARM_THM_CALL:
4989 /* Thumb BL (branch long instruction). */
4993 bfd_boolean overflow = FALSE;
4994 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
4995 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
4996 bfd_signed_vma reloc_signed_max;
4997 bfd_signed_vma reloc_signed_min;
4999 bfd_signed_vma signed_check;
5001 int thumb2 = using_thumb2 (globals);
5003 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
5004 with Thumb-1) involving the J1 and J2 bits. */
5005 if (globals->use_rel)
5007 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
5008 bfd_vma upper = upper_insn & 0x3ff;
5009 bfd_vma lower = lower_insn & 0x7ff;
5010 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
5011 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
5012 bfd_vma i1 = j1 ^ s ? 0 : 1;
5013 bfd_vma i2 = j2 ^ s ? 0 : 1;
5015 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
5017 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
5019 signed_addend = addend;
5022 if (r_type == R_ARM_THM_XPC22)
5024 /* Check for Thumb to Thumb call. */
5025 /* FIXME: Should we translate the instruction into a BL
5026 instruction instead ? */
5027 if (sym_flags == STT_ARM_TFUNC)
5028 (*_bfd_error_handler)
5029 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
5031 h ? h->root.root.string : "(local)");
5035 /* If it is not a call to Thumb, assume call to Arm.
5036 If it is a call relative to a section name, then it is not a
5037 function call at all, but rather a long jump. Calls through
5038 the PLT do not require stubs. */
5039 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
5040 && (h == NULL || splt == NULL
5041 || h->plt.offset == (bfd_vma) -1))
5043 if (globals->use_blx)
5045 /* Convert BL to BLX. */
5046 lower_insn = (lower_insn & ~0x1000) | 0x0800;
5048 else if (elf32_thumb_to_arm_stub
5049 (info, sym_name, input_bfd, output_bfd, input_section,
5050 hit_data, sym_sec, rel->r_offset, signed_addend, value,
5052 return bfd_reloc_ok;
5054 return bfd_reloc_dangerous;
5056 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx)
5058 /* Make sure this is a BL. */
5059 lower_insn |= 0x1800;
5063 /* Handle calls via the PLT. */
5064 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
5066 value = (splt->output_section->vma
5067 + splt->output_offset
5069 if (globals->use_blx)
5071 /* If the Thumb BLX instruction is available, convert the
5072 BL to a BLX instruction to call the ARM-mode PLT entry. */
5073 lower_insn = (lower_insn & ~0x1000) | 0x0800;
5076 /* Target the Thumb stub before the ARM PLT entry. */
5077 value -= PLT_THUMB_STUB_SIZE;
5078 *unresolved_reloc_p = FALSE;
5081 relocation = value + signed_addend;
5083 relocation -= (input_section->output_section->vma
5084 + input_section->output_offset
5087 check = relocation >> howto->rightshift;
5089 /* If this is a signed value, the rightshift just dropped
5090 leading 1 bits (assuming twos complement). */
5091 if ((bfd_signed_vma) relocation >= 0)
5092 signed_check = check;
5094 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
5096 /* Calculate the permissable maximum and minimum values for
5097 this relocation according to whether we're relocating for
5099 bitsize = howto->bitsize;
5102 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
5103 reloc_signed_min = ~reloc_signed_max;
5105 /* Assumes two's complement. */
5106 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5109 if ((lower_insn & 0x1800) == 0x0800)
5110 /* For a BLX instruction, make sure that the relocation is rounded up
5111 to a word boundary. This follows the semantics of the instruction
5112 which specifies that bit 1 of the target address will come from bit
5113 1 of the base address. */
5114 relocation = (relocation + 2) & ~ 3;
5116 /* Put RELOCATION back into the insn. Assumes two's complement.
5117 We use the Thumb-2 encoding, which is safe even if dealing with
5118 a Thumb-1 instruction by virtue of our overflow check above. */
5119 reloc_sign = (signed_check < 0) ? 1 : 0;
5120 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
5121 | ((relocation >> 12) & 0x3ff)
5122 | (reloc_sign << 10);
5123 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
5124 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
5125 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
5126 | ((relocation >> 1) & 0x7ff);
5128 /* Put the relocated value back in the object file: */
5129 bfd_put_16 (input_bfd, upper_insn, hit_data);
5130 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5132 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5136 case R_ARM_THM_JUMP24:
5137 /* Thumb32 unconditional branch instruction. */
5140 bfd_boolean overflow = FALSE;
5141 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
5142 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
5143 bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
5144 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
5146 bfd_signed_vma signed_check;
5148 /* Need to refetch the addend, reconstruct the top three bits, and glue the
5149 two pieces together. */
5150 if (globals->use_rel)
5152 bfd_vma S = (upper_insn & 0x0400) >> 10;
5153 bfd_vma hi = (upper_insn & 0x03ff);
5154 bfd_vma I1 = (lower_insn & 0x2000) >> 13;
5155 bfd_vma I2 = (lower_insn & 0x0800) >> 11;
5156 bfd_vma lo = (lower_insn & 0x07ff);
5162 signed_addend = (S << 24) | (I1 << 23) | (I2 << 22) | (hi << 12) | (lo << 1);
5163 signed_addend -= (1 << 24); /* Sign extend. */
5166 /* ??? Should handle interworking? GCC might someday try to
5167 use this for tail calls. */
5169 relocation = value + signed_addend;
5170 relocation -= (input_section->output_section->vma
5171 + input_section->output_offset
5174 check = relocation >> howto->rightshift;
5176 /* If this is a signed value, the rightshift just dropped
5177 leading 1 bits (assuming twos complement). */
5178 if ((bfd_signed_vma) relocation >= 0)
5179 signed_check = check;
5181 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
5183 /* Assumes two's complement. */
5184 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5187 /* Put RELOCATION back into the insn. */
5189 bfd_vma S = (relocation & 0x01000000) >> 24;
5190 bfd_vma I1 = (relocation & 0x00800000) >> 23;
5191 bfd_vma I2 = (relocation & 0x00400000) >> 22;
5192 bfd_vma hi = (relocation & 0x003ff000) >> 12;
5193 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
5198 upper_insn = (upper_insn & (bfd_vma) 0xf800) | (S << 10) | hi;
5199 lower_insn = (lower_insn & (bfd_vma) 0xd000) | (I1 << 13) | (I2 << 11) | lo;
5202 /* Put the relocated value back in the object file: */
5203 bfd_put_16 (input_bfd, upper_insn, hit_data);
5204 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5206 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5209 case R_ARM_THM_JUMP19:
5210 /* Thumb32 conditional branch instruction. */
5213 bfd_boolean overflow = FALSE;
5214 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
5215 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
5216 bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
5217 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
5219 bfd_signed_vma signed_check;
5221 /* Need to refetch the addend, reconstruct the top three bits,
5222 and squish the two 11 bit pieces together. */
5223 if (globals->use_rel)
5225 bfd_vma S = (upper_insn & 0x0400) >> 10;
5226 bfd_vma upper = (upper_insn & 0x001f);
5227 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
5228 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
5229 bfd_vma lower = (lower_insn & 0x07ff);
5234 upper -= 0x0100; /* Sign extend. */
5236 addend = (upper << 12) | (lower << 1);
5237 signed_addend = addend;
5240 /* ??? Should handle interworking? GCC might someday try to
5241 use this for tail calls. */
5243 relocation = value + signed_addend;
5244 relocation -= (input_section->output_section->vma
5245 + input_section->output_offset
5248 check = relocation >> howto->rightshift;
5250 /* If this is a signed value, the rightshift just dropped
5251 leading 1 bits (assuming twos complement). */
5252 if ((bfd_signed_vma) relocation >= 0)
5253 signed_check = check;
5255 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
5257 /* Assumes two's complement. */
5258 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5261 /* Put RELOCATION back into the insn. */
5263 bfd_vma S = (relocation & 0x00100000) >> 20;
5264 bfd_vma J2 = (relocation & 0x00080000) >> 19;
5265 bfd_vma J1 = (relocation & 0x00040000) >> 18;
5266 bfd_vma hi = (relocation & 0x0003f000) >> 12;
5267 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
5269 upper_insn = (upper_insn & 0xfb30) | (S << 10) | hi;
5270 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
5273 /* Put the relocated value back in the object file: */
5274 bfd_put_16 (input_bfd, upper_insn, hit_data);
5275 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5277 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5280 case R_ARM_THM_JUMP11:
5281 case R_ARM_THM_JUMP8:
5282 case R_ARM_THM_JUMP6:
5283 /* Thumb B (branch) instruction). */
5285 bfd_signed_vma relocation;
5286 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
5287 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
5288 bfd_signed_vma signed_check;
5290 /* CZB cannot jump backward. */
5291 if (r_type == R_ARM_THM_JUMP6)
5292 reloc_signed_min = 0;
5294 if (globals->use_rel)
5296 /* Need to refetch addend. */
5297 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
5298 if (addend & ((howto->src_mask + 1) >> 1))
5301 signed_addend &= ~ howto->src_mask;
5302 signed_addend |= addend;
5305 signed_addend = addend;
5306 /* The value in the insn has been right shifted. We need to
5307 undo this, so that we can perform the address calculation
5308 in terms of bytes. */
5309 signed_addend <<= howto->rightshift;
5311 relocation = value + signed_addend;
5313 relocation -= (input_section->output_section->vma
5314 + input_section->output_offset
5317 relocation >>= howto->rightshift;
5318 signed_check = relocation;
5320 if (r_type == R_ARM_THM_JUMP6)
5321 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
5323 relocation &= howto->dst_mask;
5324 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
5326 bfd_put_16 (input_bfd, relocation, hit_data);
5328 /* Assumes two's complement. */
5329 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5330 return bfd_reloc_overflow;
5332 return bfd_reloc_ok;
5335 case R_ARM_ALU_PCREL7_0:
5336 case R_ARM_ALU_PCREL15_8:
5337 case R_ARM_ALU_PCREL23_15:
5342 insn = bfd_get_32 (input_bfd, hit_data);
5343 if (globals->use_rel)
5345 /* Extract the addend. */
5346 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
5347 signed_addend = addend;
5349 relocation = value + signed_addend;
5351 relocation -= (input_section->output_section->vma
5352 + input_section->output_offset
5354 insn = (insn & ~0xfff)
5355 | ((howto->bitpos << 7) & 0xf00)
5356 | ((relocation >> howto->bitpos) & 0xff);
5357 bfd_put_32 (input_bfd, value, hit_data);
5359 return bfd_reloc_ok;
5361 case R_ARM_GNU_VTINHERIT:
5362 case R_ARM_GNU_VTENTRY:
5363 return bfd_reloc_ok;
5365 case R_ARM_GOTOFF32:
5366 /* Relocation is relative to the start of the
5367 global offset table. */
5369 BFD_ASSERT (sgot != NULL);
5371 return bfd_reloc_notsupported;
5373 /* If we are addressing a Thumb function, we need to adjust the
5374 address by one, so that attempts to call the function pointer will
5375 correctly interpret it as Thumb code. */
5376 if (sym_flags == STT_ARM_TFUNC)
5379 /* Note that sgot->output_offset is not involved in this
5380 calculation. We always want the start of .got. If we
5381 define _GLOBAL_OFFSET_TABLE in a different way, as is
5382 permitted by the ABI, we might have to change this
5384 value -= sgot->output_section->vma;
5385 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5386 contents, rel->r_offset, value,
5390 /* Use global offset table as symbol value. */
5391 BFD_ASSERT (sgot != NULL);
5394 return bfd_reloc_notsupported;
5396 *unresolved_reloc_p = FALSE;
5397 value = sgot->output_section->vma;
5398 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5399 contents, rel->r_offset, value,
5403 case R_ARM_GOT_PREL:
5404 /* Relocation is to the entry for this symbol in the
5405 global offset table. */
5407 return bfd_reloc_notsupported;
5414 off = h->got.offset;
5415 BFD_ASSERT (off != (bfd_vma) -1);
5416 dyn = globals->root.dynamic_sections_created;
5418 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5420 && SYMBOL_REFERENCES_LOCAL (info, h))
5421 || (ELF_ST_VISIBILITY (h->other)
5422 && h->root.type == bfd_link_hash_undefweak))
5424 /* This is actually a static link, or it is a -Bsymbolic link
5425 and the symbol is defined locally. We must initialize this
5426 entry in the global offset table. Since the offset must
5427 always be a multiple of 4, we use the least significant bit
5428 to record whether we have initialized it already.
5430 When doing a dynamic link, we create a .rel(a).got relocation
5431 entry to initialize the value. This is done in the
5432 finish_dynamic_symbol routine. */
5437 /* If we are addressing a Thumb function, we need to
5438 adjust the address by one, so that attempts to
5439 call the function pointer will correctly
5440 interpret it as Thumb code. */
5441 if (sym_flags == STT_ARM_TFUNC)
5444 bfd_put_32 (output_bfd, value, sgot->contents + off);
5449 *unresolved_reloc_p = FALSE;
5451 value = sgot->output_offset + off;
5457 BFD_ASSERT (local_got_offsets != NULL &&
5458 local_got_offsets[r_symndx] != (bfd_vma) -1);
5460 off = local_got_offsets[r_symndx];
5462 /* The offset must always be a multiple of 4. We use the
5463 least significant bit to record whether we have already
5464 generated the necessary reloc. */
5469 /* If we are addressing a Thumb function, we need to
5470 adjust the address by one, so that attempts to
5471 call the function pointer will correctly
5472 interpret it as Thumb code. */
5473 if (sym_flags == STT_ARM_TFUNC)
5476 if (globals->use_rel)
5477 bfd_put_32 (output_bfd, value, sgot->contents + off);
5482 Elf_Internal_Rela outrel;
5485 srelgot = (bfd_get_section_by_name
5486 (dynobj, RELOC_SECTION (globals, ".got")));
5487 BFD_ASSERT (srelgot != NULL);
5489 outrel.r_addend = addend + value;
5490 outrel.r_offset = (sgot->output_section->vma
5491 + sgot->output_offset
5493 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
5494 loc = srelgot->contents;
5495 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
5496 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5499 local_got_offsets[r_symndx] |= 1;
5502 value = sgot->output_offset + off;
5504 if (r_type != R_ARM_GOT32)
5505 value += sgot->output_section->vma;
5507 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5508 contents, rel->r_offset, value,
5511 case R_ARM_TLS_LDO32:
5512 value = value - dtpoff_base (info);
5514 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5515 contents, rel->r_offset, value,
5518 case R_ARM_TLS_LDM32:
5522 if (globals->sgot == NULL)
5525 off = globals->tls_ldm_got.offset;
5531 /* If we don't know the module number, create a relocation
5535 Elf_Internal_Rela outrel;
5538 if (globals->srelgot == NULL)
5541 outrel.r_addend = 0;
5542 outrel.r_offset = (globals->sgot->output_section->vma
5543 + globals->sgot->output_offset + off);
5544 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
5546 if (globals->use_rel)
5547 bfd_put_32 (output_bfd, outrel.r_addend,
5548 globals->sgot->contents + off);
5550 loc = globals->srelgot->contents;
5551 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
5552 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5555 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
5557 globals->tls_ldm_got.offset |= 1;
5560 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
5561 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
5563 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5564 contents, rel->r_offset, value,
5568 case R_ARM_TLS_GD32:
5569 case R_ARM_TLS_IE32:
5575 if (globals->sgot == NULL)
5582 dyn = globals->root.dynamic_sections_created;
5583 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5585 || !SYMBOL_REFERENCES_LOCAL (info, h)))
5587 *unresolved_reloc_p = FALSE;
5590 off = h->got.offset;
5591 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
5595 if (local_got_offsets == NULL)
5597 off = local_got_offsets[r_symndx];
5598 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
5601 if (tls_type == GOT_UNKNOWN)
5608 bfd_boolean need_relocs = FALSE;
5609 Elf_Internal_Rela outrel;
5610 bfd_byte *loc = NULL;
5613 /* The GOT entries have not been initialized yet. Do it
5614 now, and emit any relocations. If both an IE GOT and a
5615 GD GOT are necessary, we emit the GD first. */
5617 if ((info->shared || indx != 0)
5619 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5620 || h->root.type != bfd_link_hash_undefweak))
5623 if (globals->srelgot == NULL)
5625 loc = globals->srelgot->contents;
5626 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
5629 if (tls_type & GOT_TLS_GD)
5633 outrel.r_addend = 0;
5634 outrel.r_offset = (globals->sgot->output_section->vma
5635 + globals->sgot->output_offset
5637 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
5639 if (globals->use_rel)
5640 bfd_put_32 (output_bfd, outrel.r_addend,
5641 globals->sgot->contents + cur_off);
5643 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5644 globals->srelgot->reloc_count++;
5645 loc += RELOC_SIZE (globals);
5648 bfd_put_32 (output_bfd, value - dtpoff_base (info),
5649 globals->sgot->contents + cur_off + 4);
5652 outrel.r_addend = 0;
5653 outrel.r_info = ELF32_R_INFO (indx,
5654 R_ARM_TLS_DTPOFF32);
5655 outrel.r_offset += 4;
5657 if (globals->use_rel)
5658 bfd_put_32 (output_bfd, outrel.r_addend,
5659 globals->sgot->contents + cur_off + 4);
5662 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5663 globals->srelgot->reloc_count++;
5664 loc += RELOC_SIZE (globals);
5669 /* If we are not emitting relocations for a
5670 general dynamic reference, then we must be in a
5671 static link or an executable link with the
5672 symbol binding locally. Mark it as belonging
5673 to module 1, the executable. */
5674 bfd_put_32 (output_bfd, 1,
5675 globals->sgot->contents + cur_off);
5676 bfd_put_32 (output_bfd, value - dtpoff_base (info),
5677 globals->sgot->contents + cur_off + 4);
5683 if (tls_type & GOT_TLS_IE)
5688 outrel.r_addend = value - dtpoff_base (info);
5690 outrel.r_addend = 0;
5691 outrel.r_offset = (globals->sgot->output_section->vma
5692 + globals->sgot->output_offset
5694 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
5696 if (globals->use_rel)
5697 bfd_put_32 (output_bfd, outrel.r_addend,
5698 globals->sgot->contents + cur_off);
5700 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5701 globals->srelgot->reloc_count++;
5702 loc += RELOC_SIZE (globals);
5705 bfd_put_32 (output_bfd, tpoff (info, value),
5706 globals->sgot->contents + cur_off);
5713 local_got_offsets[r_symndx] |= 1;
5716 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
5718 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
5719 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
5721 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5722 contents, rel->r_offset, value,
5726 case R_ARM_TLS_LE32:
5729 (*_bfd_error_handler)
5730 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
5731 input_bfd, input_section,
5732 (long) rel->r_offset, howto->name);
5736 value = tpoff (info, value);
5738 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5739 contents, rel->r_offset, value,
5743 if (globals->fix_v4bx)
5745 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5747 /* Ensure that we have a BX instruction. */
5748 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
5750 /* Preserve Rm (lowest four bits) and the condition code
5751 (highest four bits). Other bits encode MOV PC,Rm. */
5752 insn = (insn & 0xf000000f) | 0x01a0f000;
5754 bfd_put_32 (input_bfd, insn, hit_data);
5756 return bfd_reloc_ok;
5758 case R_ARM_MOVW_ABS_NC:
5759 case R_ARM_MOVT_ABS:
5760 case R_ARM_MOVW_PREL_NC:
5761 case R_ARM_MOVT_PREL:
5762 /* Until we properly support segment-base-relative addressing then
5763 we assume the segment base to be zero, as for the group relocations.
5764 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
5765 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
5766 case R_ARM_MOVW_BREL_NC:
5767 case R_ARM_MOVW_BREL:
5768 case R_ARM_MOVT_BREL:
5770 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5772 if (globals->use_rel)
5774 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
5775 signed_addend = (addend ^ 0x10000) - 0x10000;
5778 value += signed_addend;
5780 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
5781 value -= (input_section->output_section->vma
5782 + input_section->output_offset + rel->r_offset);
5784 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
5785 return bfd_reloc_overflow;
5787 if (sym_flags == STT_ARM_TFUNC)
5790 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
5791 || r_type == R_ARM_MOVT_BREL)
5795 insn |= value & 0xfff;
5796 insn |= (value & 0xf000) << 4;
5797 bfd_put_32 (input_bfd, insn, hit_data);
5799 return bfd_reloc_ok;
5801 case R_ARM_THM_MOVW_ABS_NC:
5802 case R_ARM_THM_MOVT_ABS:
5803 case R_ARM_THM_MOVW_PREL_NC:
5804 case R_ARM_THM_MOVT_PREL:
5805 /* Until we properly support segment-base-relative addressing then
5806 we assume the segment base to be zero, as for the above relocations.
5807 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
5808 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
5809 as R_ARM_THM_MOVT_ABS. */
5810 case R_ARM_THM_MOVW_BREL_NC:
5811 case R_ARM_THM_MOVW_BREL:
5812 case R_ARM_THM_MOVT_BREL:
5816 insn = bfd_get_16 (input_bfd, hit_data) << 16;
5817 insn |= bfd_get_16 (input_bfd, hit_data + 2);
5819 if (globals->use_rel)
5821 addend = ((insn >> 4) & 0xf000)
5822 | ((insn >> 15) & 0x0800)
5823 | ((insn >> 4) & 0x0700)
5825 signed_addend = (addend ^ 0x10000) - 0x10000;
5828 value += signed_addend;
5830 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
5831 value -= (input_section->output_section->vma
5832 + input_section->output_offset + rel->r_offset);
5834 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
5835 return bfd_reloc_overflow;
5837 if (sym_flags == STT_ARM_TFUNC)
5840 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
5841 || r_type == R_ARM_THM_MOVT_BREL)
5845 insn |= (value & 0xf000) << 4;
5846 insn |= (value & 0x0800) << 15;
5847 insn |= (value & 0x0700) << 4;
5848 insn |= (value & 0x00ff);
5850 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5851 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5853 return bfd_reloc_ok;
5855 case R_ARM_ALU_PC_G0_NC:
5856 case R_ARM_ALU_PC_G1_NC:
5857 case R_ARM_ALU_PC_G0:
5858 case R_ARM_ALU_PC_G1:
5859 case R_ARM_ALU_PC_G2:
5860 case R_ARM_ALU_SB_G0_NC:
5861 case R_ARM_ALU_SB_G1_NC:
5862 case R_ARM_ALU_SB_G0:
5863 case R_ARM_ALU_SB_G1:
5864 case R_ARM_ALU_SB_G2:
5866 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5867 bfd_vma pc = input_section->output_section->vma
5868 + input_section->output_offset + rel->r_offset;
5869 /* sb should be the origin of the *segment* containing the symbol.
5870 It is not clear how to obtain this OS-dependent value, so we
5871 make an arbitrary choice of zero. */
5875 bfd_signed_vma signed_value;
5878 /* Determine which group of bits to select. */
5881 case R_ARM_ALU_PC_G0_NC:
5882 case R_ARM_ALU_PC_G0:
5883 case R_ARM_ALU_SB_G0_NC:
5884 case R_ARM_ALU_SB_G0:
5888 case R_ARM_ALU_PC_G1_NC:
5889 case R_ARM_ALU_PC_G1:
5890 case R_ARM_ALU_SB_G1_NC:
5891 case R_ARM_ALU_SB_G1:
5895 case R_ARM_ALU_PC_G2:
5896 case R_ARM_ALU_SB_G2:
5904 /* If REL, extract the addend from the insn. If RELA, it will
5905 have already been fetched for us. */
5906 if (globals->use_rel)
5909 bfd_vma constant = insn & 0xff;
5910 bfd_vma rotation = (insn & 0xf00) >> 8;
5913 signed_addend = constant;
5916 /* Compensate for the fact that in the instruction, the
5917 rotation is stored in multiples of 2 bits. */
5920 /* Rotate "constant" right by "rotation" bits. */
5921 signed_addend = (constant >> rotation) |
5922 (constant << (8 * sizeof (bfd_vma) - rotation));
5925 /* Determine if the instruction is an ADD or a SUB.
5926 (For REL, this determines the sign of the addend.) */
5927 negative = identify_add_or_sub (insn);
5930 (*_bfd_error_handler)
5931 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
5932 input_bfd, input_section,
5933 (long) rel->r_offset, howto->name);
5934 return bfd_reloc_overflow;
5937 signed_addend *= negative;
5940 /* Compute the value (X) to go in the place. */
5941 if (r_type == R_ARM_ALU_PC_G0_NC
5942 || r_type == R_ARM_ALU_PC_G1_NC
5943 || r_type == R_ARM_ALU_PC_G0
5944 || r_type == R_ARM_ALU_PC_G1
5945 || r_type == R_ARM_ALU_PC_G2)
5947 signed_value = value - pc + signed_addend;
5949 /* Section base relative. */
5950 signed_value = value - sb + signed_addend;
5952 /* If the target symbol is a Thumb function, then set the
5953 Thumb bit in the address. */
5954 if (sym_flags == STT_ARM_TFUNC)
5957 /* Calculate the value of the relevant G_n, in encoded
5958 constant-with-rotation format. */
5959 g_n = calculate_group_reloc_mask (abs (signed_value), group,
5962 /* Check for overflow if required. */
5963 if ((r_type == R_ARM_ALU_PC_G0
5964 || r_type == R_ARM_ALU_PC_G1
5965 || r_type == R_ARM_ALU_PC_G2
5966 || r_type == R_ARM_ALU_SB_G0
5967 || r_type == R_ARM_ALU_SB_G1
5968 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
5970 (*_bfd_error_handler)
5971 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5972 input_bfd, input_section,
5973 (long) rel->r_offset, abs (signed_value), howto->name);
5974 return bfd_reloc_overflow;
5977 /* Mask out the value and the ADD/SUB part of the opcode; take care
5978 not to destroy the S bit. */
5981 /* Set the opcode according to whether the value to go in the
5982 place is negative. */
5983 if (signed_value < 0)
5988 /* Encode the offset. */
5991 bfd_put_32 (input_bfd, insn, hit_data);
5993 return bfd_reloc_ok;
5995 case R_ARM_LDR_PC_G0:
5996 case R_ARM_LDR_PC_G1:
5997 case R_ARM_LDR_PC_G2:
5998 case R_ARM_LDR_SB_G0:
5999 case R_ARM_LDR_SB_G1:
6000 case R_ARM_LDR_SB_G2:
6002 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6003 bfd_vma pc = input_section->output_section->vma
6004 + input_section->output_offset + rel->r_offset;
6005 bfd_vma sb = 0; /* See note above. */
6007 bfd_signed_vma signed_value;
6010 /* Determine which groups of bits to calculate. */
6013 case R_ARM_LDR_PC_G0:
6014 case R_ARM_LDR_SB_G0:
6018 case R_ARM_LDR_PC_G1:
6019 case R_ARM_LDR_SB_G1:
6023 case R_ARM_LDR_PC_G2:
6024 case R_ARM_LDR_SB_G2:
6032 /* If REL, extract the addend from the insn. If RELA, it will
6033 have already been fetched for us. */
6034 if (globals->use_rel)
6036 int negative = (insn & (1 << 23)) ? 1 : -1;
6037 signed_addend = negative * (insn & 0xfff);
6040 /* Compute the value (X) to go in the place. */
6041 if (r_type == R_ARM_LDR_PC_G0
6042 || r_type == R_ARM_LDR_PC_G1
6043 || r_type == R_ARM_LDR_PC_G2)
6045 signed_value = value - pc + signed_addend;
6047 /* Section base relative. */
6048 signed_value = value - sb + signed_addend;
6050 /* Calculate the value of the relevant G_{n-1} to obtain
6051 the residual at that stage. */
6052 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6054 /* Check for overflow. */
6055 if (residual >= 0x1000)
6057 (*_bfd_error_handler)
6058 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6059 input_bfd, input_section,
6060 (long) rel->r_offset, abs (signed_value), howto->name);
6061 return bfd_reloc_overflow;
6064 /* Mask out the value and U bit. */
6067 /* Set the U bit if the value to go in the place is non-negative. */
6068 if (signed_value >= 0)
6071 /* Encode the offset. */
6074 bfd_put_32 (input_bfd, insn, hit_data);
6076 return bfd_reloc_ok;
6078 case R_ARM_LDRS_PC_G0:
6079 case R_ARM_LDRS_PC_G1:
6080 case R_ARM_LDRS_PC_G2:
6081 case R_ARM_LDRS_SB_G0:
6082 case R_ARM_LDRS_SB_G1:
6083 case R_ARM_LDRS_SB_G2:
6085 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6086 bfd_vma pc = input_section->output_section->vma
6087 + input_section->output_offset + rel->r_offset;
6088 bfd_vma sb = 0; /* See note above. */
6090 bfd_signed_vma signed_value;
6093 /* Determine which groups of bits to calculate. */
6096 case R_ARM_LDRS_PC_G0:
6097 case R_ARM_LDRS_SB_G0:
6101 case R_ARM_LDRS_PC_G1:
6102 case R_ARM_LDRS_SB_G1:
6106 case R_ARM_LDRS_PC_G2:
6107 case R_ARM_LDRS_SB_G2:
6115 /* If REL, extract the addend from the insn. If RELA, it will
6116 have already been fetched for us. */
6117 if (globals->use_rel)
6119 int negative = (insn & (1 << 23)) ? 1 : -1;
6120 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
6123 /* Compute the value (X) to go in the place. */
6124 if (r_type == R_ARM_LDRS_PC_G0
6125 || r_type == R_ARM_LDRS_PC_G1
6126 || r_type == R_ARM_LDRS_PC_G2)
6128 signed_value = value - pc + signed_addend;
6130 /* Section base relative. */
6131 signed_value = value - sb + signed_addend;
6133 /* Calculate the value of the relevant G_{n-1} to obtain
6134 the residual at that stage. */
6135 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6137 /* Check for overflow. */
6138 if (residual >= 0x100)
6140 (*_bfd_error_handler)
6141 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6142 input_bfd, input_section,
6143 (long) rel->r_offset, abs (signed_value), howto->name);
6144 return bfd_reloc_overflow;
6147 /* Mask out the value and U bit. */
6150 /* Set the U bit if the value to go in the place is non-negative. */
6151 if (signed_value >= 0)
6154 /* Encode the offset. */
6155 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
6157 bfd_put_32 (input_bfd, insn, hit_data);
6159 return bfd_reloc_ok;
6161 case R_ARM_LDC_PC_G0:
6162 case R_ARM_LDC_PC_G1:
6163 case R_ARM_LDC_PC_G2:
6164 case R_ARM_LDC_SB_G0:
6165 case R_ARM_LDC_SB_G1:
6166 case R_ARM_LDC_SB_G2:
6168 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6169 bfd_vma pc = input_section->output_section->vma
6170 + input_section->output_offset + rel->r_offset;
6171 bfd_vma sb = 0; /* See note above. */
6173 bfd_signed_vma signed_value;
6176 /* Determine which groups of bits to calculate. */
6179 case R_ARM_LDC_PC_G0:
6180 case R_ARM_LDC_SB_G0:
6184 case R_ARM_LDC_PC_G1:
6185 case R_ARM_LDC_SB_G1:
6189 case R_ARM_LDC_PC_G2:
6190 case R_ARM_LDC_SB_G2:
6198 /* If REL, extract the addend from the insn. If RELA, it will
6199 have already been fetched for us. */
6200 if (globals->use_rel)
6202 int negative = (insn & (1 << 23)) ? 1 : -1;
6203 signed_addend = negative * ((insn & 0xff) << 2);
6206 /* Compute the value (X) to go in the place. */
6207 if (r_type == R_ARM_LDC_PC_G0
6208 || r_type == R_ARM_LDC_PC_G1
6209 || r_type == R_ARM_LDC_PC_G2)
6211 signed_value = value - pc + signed_addend;
6213 /* Section base relative. */
6214 signed_value = value - sb + signed_addend;
6216 /* Calculate the value of the relevant G_{n-1} to obtain
6217 the residual at that stage. */
6218 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6220 /* Check for overflow. (The absolute value to go in the place must be
6221 divisible by four and, after having been divided by four, must
6222 fit in eight bits.) */
6223 if ((residual & 0x3) != 0 || residual >= 0x400)
6225 (*_bfd_error_handler)
6226 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6227 input_bfd, input_section,
6228 (long) rel->r_offset, abs (signed_value), howto->name);
6229 return bfd_reloc_overflow;
6232 /* Mask out the value and U bit. */
6235 /* Set the U bit if the value to go in the place is non-negative. */
6236 if (signed_value >= 0)
6239 /* Encode the offset. */
6240 insn |= residual >> 2;
6242 bfd_put_32 (input_bfd, insn, hit_data);
6244 return bfd_reloc_ok;
6247 return bfd_reloc_notsupported;
6253 uleb128_size (unsigned int i)
6265 /* Return TRUE if the attribute has the default value (0/""). */
6267 is_default_attr (aeabi_attribute *attr)
6269 if ((attr->type & 1) && attr->i != 0)
6271 if ((attr->type & 2) && attr->s && *attr->s)
6277 /* Return the size of a single attribute. */
6279 eabi_attr_size(int tag, aeabi_attribute *attr)
6283 if (is_default_attr (attr))
6286 size = uleb128_size (tag);
6288 size += uleb128_size (attr->i);
6290 size += strlen ((char *)attr->s) + 1;
6294 /* Returns the size of the eabi object attributess section. */
6296 elf32_arm_eabi_attr_size (bfd *abfd)
6299 aeabi_attribute *attr;
6300 aeabi_attribute_list *list;
6303 attr = elf32_arm_tdata (abfd)->known_eabi_attributes;
6304 size = 16; /* 'A' <size> "aeabi" 0x1 <size>. */
6305 for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++)
6306 size += eabi_attr_size (i, &attr[i]);
6308 for (list = elf32_arm_tdata (abfd)->other_eabi_attributes;
6311 size += eabi_attr_size (list->tag, &list->attr);
6317 write_uleb128 (bfd_byte *p, unsigned int val)
6332 /* Write attribute ATTR to butter P, and return a pointer to the following
6335 write_eabi_attribute (bfd_byte *p, int tag, aeabi_attribute *attr)
6337 /* Suppress default entries. */
6338 if (is_default_attr(attr))
6341 p = write_uleb128 (p, tag);
6343 p = write_uleb128 (p, attr->i);
6348 len = strlen (attr->s) + 1;
6349 memcpy (p, attr->s, len);
6356 /* Write the contents of the eabi attributes section to p. */
6358 elf32_arm_set_eabi_attr_contents (bfd *abfd, bfd_byte *contents, bfd_vma size)
6361 aeabi_attribute *attr;
6362 aeabi_attribute_list *list;
6367 bfd_put_32 (abfd, size - 1, p);
6369 memcpy (p, "aeabi", 6);
6372 bfd_put_32 (abfd, size - 11, p);
6375 attr = elf32_arm_tdata (abfd)->known_eabi_attributes;
6376 for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++)
6377 p = write_eabi_attribute (p, i, &attr[i]);
6379 for (list = elf32_arm_tdata (abfd)->other_eabi_attributes;
6382 p = write_eabi_attribute (p, list->tag, &list->attr);
6385 /* Override final_link to handle EABI object attribute sections. */
6388 elf32_arm_bfd_final_link (bfd *abfd, struct bfd_link_info *info)
6391 struct bfd_link_order *p;
6392 asection *attr_section = NULL;
6396 /* elf32_arm_merge_private_bfd_data will already have merged the
6397 object attributes. Remove the input sections from the link, and set
6398 the contents of the output secton. */
6399 for (o = abfd->sections; o != NULL; o = o->next)
6401 if (strcmp (o->name, ".ARM.attributes") == 0)
6403 for (p = o->map_head.link_order; p != NULL; p = p->next)
6405 asection *input_section;
6407 if (p->type != bfd_indirect_link_order)
6409 input_section = p->u.indirect.section;
6410 /* Hack: reset the SEC_HAS_CONTENTS flag so that
6411 elf_link_input_bfd ignores this section. */
6412 input_section->flags &= ~SEC_HAS_CONTENTS;
6415 size = elf32_arm_eabi_attr_size (abfd);
6416 bfd_set_section_size (abfd, o, size);
6418 /* Skip this section later on. */
6419 o->map_head.link_order = NULL;
6422 /* Invoke the ELF linker to do all the work. */
6423 if (!bfd_elf_final_link (abfd, info))
6428 contents = bfd_malloc(size);
6429 if (contents == NULL)
6431 elf32_arm_set_eabi_attr_contents (abfd, contents, size);
6432 bfd_set_section_contents (abfd, attr_section, contents, 0, size);
6439 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
6441 arm_add_to_rel (bfd * abfd,
6443 reloc_howto_type * howto,
6444 bfd_signed_vma increment)
6446 bfd_signed_vma addend;
6448 if (howto->type == R_ARM_THM_CALL)
6450 int upper_insn, lower_insn;
6453 upper_insn = bfd_get_16 (abfd, address);
6454 lower_insn = bfd_get_16 (abfd, address + 2);
6455 upper = upper_insn & 0x7ff;
6456 lower = lower_insn & 0x7ff;
6458 addend = (upper << 12) | (lower << 1);
6459 addend += increment;
6462 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
6463 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
6465 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
6466 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
6472 contents = bfd_get_32 (abfd, address);
6474 /* Get the (signed) value from the instruction. */
6475 addend = contents & howto->src_mask;
6476 if (addend & ((howto->src_mask + 1) >> 1))
6478 bfd_signed_vma mask;
6481 mask &= ~ howto->src_mask;
6485 /* Add in the increment, (which is a byte value). */
6486 switch (howto->type)
6489 addend += increment;
6496 addend <<= howto->size;
6497 addend += increment;
6499 /* Should we check for overflow here ? */
6501 /* Drop any undesired bits. */
6502 addend >>= howto->rightshift;
6506 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
6508 bfd_put_32 (abfd, contents, address);
6512 #define IS_ARM_TLS_RELOC(R_TYPE) \
6513 ((R_TYPE) == R_ARM_TLS_GD32 \
6514 || (R_TYPE) == R_ARM_TLS_LDO32 \
6515 || (R_TYPE) == R_ARM_TLS_LDM32 \
6516 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
6517 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
6518 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
6519 || (R_TYPE) == R_ARM_TLS_LE32 \
6520 || (R_TYPE) == R_ARM_TLS_IE32)
6522 /* Relocate an ARM ELF section. */
6524 elf32_arm_relocate_section (bfd * output_bfd,
6525 struct bfd_link_info * info,
6527 asection * input_section,
6528 bfd_byte * contents,
6529 Elf_Internal_Rela * relocs,
6530 Elf_Internal_Sym * local_syms,
6531 asection ** local_sections)
6533 Elf_Internal_Shdr *symtab_hdr;
6534 struct elf_link_hash_entry **sym_hashes;
6535 Elf_Internal_Rela *rel;
6536 Elf_Internal_Rela *relend;
6538 struct elf32_arm_link_hash_table * globals;
6540 globals = elf32_arm_hash_table (info);
6542 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
6543 sym_hashes = elf_sym_hashes (input_bfd);
6546 relend = relocs + input_section->reloc_count;
6547 for (; rel < relend; rel++)
6550 reloc_howto_type * howto;
6551 unsigned long r_symndx;
6552 Elf_Internal_Sym * sym;
6554 struct elf_link_hash_entry * h;
6556 bfd_reloc_status_type r;
6559 bfd_boolean unresolved_reloc = FALSE;
6560 char *error_message = NULL;
6562 r_symndx = ELF32_R_SYM (rel->r_info);
6563 r_type = ELF32_R_TYPE (rel->r_info);
6564 r_type = arm_real_reloc_type (globals, r_type);
6566 if ( r_type == R_ARM_GNU_VTENTRY
6567 || r_type == R_ARM_GNU_VTINHERIT)
6570 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
6571 howto = bfd_reloc.howto;
6577 if (r_symndx < symtab_hdr->sh_info)
6579 sym = local_syms + r_symndx;
6580 sym_type = ELF32_ST_TYPE (sym->st_info);
6581 sec = local_sections[r_symndx];
6582 if (globals->use_rel)
6584 relocation = (sec->output_section->vma
6585 + sec->output_offset
6587 if (!info->relocatable
6588 && (sec->flags & SEC_MERGE)
6589 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
6592 bfd_vma addend, value;
6594 if (howto->rightshift)
6596 (*_bfd_error_handler)
6597 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
6598 input_bfd, input_section,
6599 (long) rel->r_offset, howto->name);
6603 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
6605 /* Get the (signed) value from the instruction. */
6606 addend = value & howto->src_mask;
6607 if (addend & ((howto->src_mask + 1) >> 1))
6609 bfd_signed_vma mask;
6612 mask &= ~ howto->src_mask;
6617 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
6619 addend += msec->output_section->vma + msec->output_offset;
6620 value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask);
6621 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
6625 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6631 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6632 r_symndx, symtab_hdr, sym_hashes,
6634 unresolved_reloc, warned);
6639 if (sec != NULL && elf_discarded_section (sec))
6641 /* For relocs against symbols from removed linkonce sections,
6642 or sections discarded by a linker script, we just want the
6643 section contents zeroed. Avoid any special processing. */
6644 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6650 if (info->relocatable)
6652 /* This is a relocatable link. We don't have to change
6653 anything, unless the reloc is against a section symbol,
6654 in which case we have to adjust according to where the
6655 section symbol winds up in the output section. */
6656 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
6658 if (globals->use_rel)
6659 arm_add_to_rel (input_bfd, contents + rel->r_offset,
6660 howto, (bfd_signed_vma) sec->output_offset);
6662 rel->r_addend += sec->output_offset;
6668 name = h->root.root.string;
6671 name = (bfd_elf_string_from_elf_section
6672 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6673 if (name == NULL || *name == '\0')
6674 name = bfd_section_name (input_bfd, sec);
6678 && r_type != R_ARM_NONE
6680 || h->root.type == bfd_link_hash_defined
6681 || h->root.type == bfd_link_hash_defweak)
6682 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
6684 (*_bfd_error_handler)
6685 ((sym_type == STT_TLS
6686 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6687 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6690 (long) rel->r_offset,
6695 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
6696 input_section, contents, rel,
6697 relocation, info, sec, name,
6698 (h ? ELF_ST_TYPE (h->type) :
6699 ELF_ST_TYPE (sym->st_info)), h,
6700 &unresolved_reloc, &error_message);
6702 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6703 because such sections are not SEC_ALLOC and thus ld.so will
6704 not process them. */
6705 if (unresolved_reloc
6706 && !((input_section->flags & SEC_DEBUGGING) != 0
6709 (*_bfd_error_handler)
6710 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6713 (long) rel->r_offset,
6715 h->root.root.string);
6719 if (r != bfd_reloc_ok)
6723 case bfd_reloc_overflow:
6724 /* If the overflowing reloc was to an undefined symbol,
6725 we have already printed one error message and there
6726 is no point complaining again. */
6728 h->root.type != bfd_link_hash_undefined)
6729 && (!((*info->callbacks->reloc_overflow)
6730 (info, (h ? &h->root : NULL), name, howto->name,
6731 (bfd_vma) 0, input_bfd, input_section,
6736 case bfd_reloc_undefined:
6737 if (!((*info->callbacks->undefined_symbol)
6738 (info, name, input_bfd, input_section,
6739 rel->r_offset, TRUE)))
6743 case bfd_reloc_outofrange:
6744 error_message = _("out of range");
6747 case bfd_reloc_notsupported:
6748 error_message = _("unsupported relocation");
6751 case bfd_reloc_dangerous:
6752 /* error_message should already be set. */
6756 error_message = _("unknown error");
6760 BFD_ASSERT (error_message != NULL);
6761 if (!((*info->callbacks->reloc_dangerous)
6762 (info, error_message, input_bfd, input_section,
6773 /* Allocate/find an object attribute. */
6774 static aeabi_attribute *
6775 elf32_arm_new_eabi_attr (bfd *abfd, int tag)
6777 aeabi_attribute *attr;
6778 aeabi_attribute_list *list;
6779 aeabi_attribute_list *p;
6780 aeabi_attribute_list **lastp;
6783 if (tag < NUM_KNOWN_ATTRIBUTES)
6785 /* Knwon tags are preallocated. */
6786 attr = &elf32_arm_tdata (abfd)->known_eabi_attributes[tag];
6790 /* Create a new tag. */
6791 list = (aeabi_attribute_list *)
6792 bfd_alloc (abfd, sizeof (aeabi_attribute_list));
6793 memset (list, 0, sizeof (aeabi_attribute_list));
6795 /* Keep the tag list in order. */
6796 lastp = &elf32_arm_tdata (abfd)->other_eabi_attributes;
6797 for (p = *lastp; p; p = p->next)
6803 list->next = *lastp;
6812 elf32_arm_get_eabi_attr_int (bfd *abfd, int tag)
6814 aeabi_attribute_list *p;
6816 if (tag < NUM_KNOWN_ATTRIBUTES)
6818 /* Knwon tags are preallocated. */
6819 return elf32_arm_tdata (abfd)->known_eabi_attributes[tag].i;
6823 for (p = elf32_arm_tdata (abfd)->other_eabi_attributes;
6837 elf32_arm_add_eabi_attr_int (bfd *abfd, int tag, unsigned int i)
6839 aeabi_attribute *attr;
6841 attr = elf32_arm_new_eabi_attr (abfd, tag);
6847 attr_strdup (bfd *abfd, const char * s)
6852 len = strlen (s) + 1;
6853 p = (char *)bfd_alloc(abfd, len);
6854 return memcpy (p, s, len);
6858 elf32_arm_add_eabi_attr_string (bfd *abfd, int tag, const char *s)
6860 aeabi_attribute *attr;
6862 attr = elf32_arm_new_eabi_attr (abfd, tag);
6864 attr->s = attr_strdup (abfd, s);
6868 elf32_arm_add_eabi_attr_compat (bfd *abfd, unsigned int i, const char *s)
6870 aeabi_attribute_list *list;
6871 aeabi_attribute_list *p;
6872 aeabi_attribute_list **lastp;
6874 list = (aeabi_attribute_list *)
6875 bfd_alloc (abfd, sizeof (aeabi_attribute_list));
6876 memset (list, 0, sizeof (aeabi_attribute_list));
6877 list->tag = Tag_compatibility;
6878 list->attr.type = 3;
6880 list->attr.s = attr_strdup (abfd, s);
6882 lastp = &elf32_arm_tdata (abfd)->other_eabi_attributes;
6883 for (p = *lastp; p; p = p->next)
6886 if (p->tag != Tag_compatibility)
6888 cmp = strcmp(s, p->attr.s);
6889 if (cmp < 0 || (cmp == 0 && i < p->attr.i))
6893 list->next = *lastp;
6897 /* Set the right machine number. */
6900 elf32_arm_object_p (bfd *abfd)
6904 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
6906 if (mach != bfd_mach_arm_unknown)
6907 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
6909 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
6910 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
6913 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
6918 /* Function to keep ARM specific flags in the ELF header. */
6921 elf32_arm_set_private_flags (bfd *abfd, flagword flags)
6923 if (elf_flags_init (abfd)
6924 && elf_elfheader (abfd)->e_flags != flags)
6926 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
6928 if (flags & EF_ARM_INTERWORK)
6929 (*_bfd_error_handler)
6930 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
6934 (_("Warning: Clearing the interworking flag of %B due to outside request"),
6940 elf_elfheader (abfd)->e_flags = flags;
6941 elf_flags_init (abfd) = TRUE;
6947 /* Copy the eabi object attribute from IBFD to OBFD. */
6949 copy_eabi_attributes (bfd *ibfd, bfd *obfd)
6951 aeabi_attribute *in_attr;
6952 aeabi_attribute *out_attr;
6953 aeabi_attribute_list *list;
6956 in_attr = &elf32_arm_tdata (ibfd)->known_eabi_attributes[4];
6957 out_attr = &elf32_arm_tdata (obfd)->known_eabi_attributes[4];
6958 for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++)
6960 out_attr->i = in_attr->i;
6961 if (in_attr->s && *in_attr->s)
6962 out_attr->s = attr_strdup (obfd, in_attr->s);
6967 for (list = elf32_arm_tdata (ibfd)->other_eabi_attributes;
6971 in_attr = &list->attr;
6972 switch (in_attr->type)
6975 elf32_arm_add_eabi_attr_int (obfd, list->tag, in_attr->i);
6978 elf32_arm_add_eabi_attr_string (obfd, list->tag, in_attr->s);
6981 elf32_arm_add_eabi_attr_compat (obfd, in_attr->i, in_attr->s);
6990 /* Copy backend specific data from one object module to another. */
6993 elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
6998 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6999 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
7002 in_flags = elf_elfheader (ibfd)->e_flags;
7003 out_flags = elf_elfheader (obfd)->e_flags;
7005 if (elf_flags_init (obfd)
7006 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
7007 && in_flags != out_flags)
7009 /* Cannot mix APCS26 and APCS32 code. */
7010 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
7013 /* Cannot mix float APCS and non-float APCS code. */
7014 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
7017 /* If the src and dest have different interworking flags
7018 then turn off the interworking bit. */
7019 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
7021 if (out_flags & EF_ARM_INTERWORK)
7023 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
7026 in_flags &= ~EF_ARM_INTERWORK;
7029 /* Likewise for PIC, though don't warn for this case. */
7030 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
7031 in_flags &= ~EF_ARM_PIC;
7034 elf_elfheader (obfd)->e_flags = in_flags;
7035 elf_flags_init (obfd) = TRUE;
7037 /* Also copy the EI_OSABI field. */
7038 elf_elfheader (obfd)->e_ident[EI_OSABI] =
7039 elf_elfheader (ibfd)->e_ident[EI_OSABI];
7041 /* Copy EABI object attributes. */
7042 copy_eabi_attributes (ibfd, obfd);
7047 /* Values for Tag_ABI_PCS_R9_use. */
7056 /* Values for Tag_ABI_PCS_RW_data. */
7059 AEABI_PCS_RW_data_absolute,
7060 AEABI_PCS_RW_data_PCrel,
7061 AEABI_PCS_RW_data_SBrel,
7062 AEABI_PCS_RW_data_unused
7065 /* Values for Tag_ABI_enum_size. */
7071 AEABI_enum_forced_wide
7074 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
7075 are conflicting attributes. */
7077 elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
7079 aeabi_attribute *in_attr;
7080 aeabi_attribute *out_attr;
7081 aeabi_attribute_list *in_list;
7082 aeabi_attribute_list *out_list;
7083 /* Some tags have 0 = don't care, 1 = strong requirement,
7084 2 = weak requirement. */
7085 static const int order_312[3] = {3, 1, 2};
7088 if (!elf32_arm_tdata (obfd)->known_eabi_attributes[0].i)
7090 /* This is the first object. Copy the attributes. */
7091 copy_eabi_attributes (ibfd, obfd);
7093 /* Use the Tag_null value to indicate the attributes have been
7095 elf32_arm_tdata (obfd)->known_eabi_attributes[0].i = 1;
7100 in_attr = elf32_arm_tdata (ibfd)->known_eabi_attributes;
7101 out_attr = elf32_arm_tdata (obfd)->known_eabi_attributes;
7102 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
7103 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
7105 /* Ignore mismatches if teh object doesn't use floating point. */
7106 if (out_attr[Tag_ABI_FP_number_model].i == 0)
7107 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
7108 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
7111 (_("ERROR: %B uses VFP register arguments, %B does not"),
7117 for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++)
7119 /* Merge this attribute with existing attributes. */
7122 case Tag_CPU_raw_name:
7124 /* Use whichever has the greatest architecture requirements. We
7125 won't necessarily have both the above tags, so make sure input
7126 name is non-NULL. */
7127 if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i
7129 out_attr[i].s = attr_strdup(obfd, in_attr[i].s);
7132 case Tag_ABI_optimization_goals:
7133 case Tag_ABI_FP_optimization_goals:
7134 /* Use the first value seen. */
7138 case Tag_ARM_ISA_use:
7139 case Tag_THUMB_ISA_use:
7143 /* ??? Do NEON and WMMX conflict? */
7144 case Tag_ABI_FP_rounding:
7145 case Tag_ABI_FP_denormal:
7146 case Tag_ABI_FP_exceptions:
7147 case Tag_ABI_FP_user_exceptions:
7148 case Tag_ABI_FP_number_model:
7149 case Tag_ABI_align8_preserved:
7150 case Tag_ABI_HardFP_use:
7151 /* Use the largest value specified. */
7152 if (in_attr[i].i > out_attr[i].i)
7153 out_attr[i].i = in_attr[i].i;
7156 case Tag_CPU_arch_profile:
7157 /* Warn if conflicting architecture profiles used. */
7158 if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i)
7161 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
7162 ibfd, in_attr[i].i, out_attr[i].i);
7166 out_attr[i].i = in_attr[i].i;
7168 case Tag_PCS_config:
7169 if (out_attr[i].i == 0)
7170 out_attr[i].i = in_attr[i].i;
7171 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
7173 /* It's sometimes ok to mix different configs, so this is only
7176 (_("Warning: %B: Conflicting platform configuration"), ibfd);
7179 case Tag_ABI_PCS_R9_use:
7180 if (in_attr[i].i != out_attr[i].i
7181 && out_attr[i].i != AEABI_R9_unused
7182 && in_attr[i].i != AEABI_R9_unused)
7185 (_("ERROR: %B: Conflicting use of R9"), ibfd);
7188 if (out_attr[i].i == AEABI_R9_unused)
7189 out_attr[i].i = in_attr[i].i;
7191 case Tag_ABI_PCS_RW_data:
7192 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
7193 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
7194 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
7197 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
7201 /* Use the smallest value specified. */
7202 if (in_attr[i].i < out_attr[i].i)
7203 out_attr[i].i = in_attr[i].i;
7205 case Tag_ABI_PCS_RO_data:
7206 /* Use the smallest value specified. */
7207 if (in_attr[i].i < out_attr[i].i)
7208 out_attr[i].i = in_attr[i].i;
7210 case Tag_ABI_PCS_GOT_use:
7211 if (in_attr[i].i > 2 || out_attr[i].i > 2
7212 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
7213 out_attr[i].i = in_attr[i].i;
7215 case Tag_ABI_PCS_wchar_t:
7216 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i)
7219 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd);
7223 out_attr[i].i = in_attr[i].i;
7225 case Tag_ABI_align8_needed:
7226 /* ??? Check against Tag_ABI_align8_preserved. */
7227 if (in_attr[i].i > 2 || out_attr[i].i > 2
7228 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
7229 out_attr[i].i = in_attr[i].i;
7231 case Tag_ABI_enum_size:
7232 if (in_attr[i].i != AEABI_enum_unused)
7234 if (out_attr[i].i == AEABI_enum_unused
7235 || out_attr[i].i == AEABI_enum_forced_wide)
7237 /* The existing object is compatible with anything.
7238 Use whatever requirements the new object has. */
7239 out_attr[i].i = in_attr[i].i;
7241 else if (in_attr[i].i != AEABI_enum_forced_wide
7242 && out_attr[i].i != in_attr[i].i
7243 && !elf32_arm_tdata (obfd)->no_enum_size_warning)
7245 const char *aeabi_enum_names[] =
7246 { "", "variable-size", "32-bit", "" };
7248 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
7249 ibfd, aeabi_enum_names[in_attr[i].i],
7250 aeabi_enum_names[out_attr[i].i]);
7254 case Tag_ABI_VFP_args:
7257 case Tag_ABI_WMMX_args:
7258 if (in_attr[i].i != out_attr[i].i)
7261 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
7266 default: /* All known attributes should be explicitly covered. */
7271 in_list = elf32_arm_tdata (ibfd)->other_eabi_attributes;
7272 out_list = elf32_arm_tdata (ibfd)->other_eabi_attributes;
7273 while (in_list && in_list->tag == Tag_compatibility)
7275 in_attr = &in_list->attr;
7276 if (in_attr->i == 0)
7278 if (in_attr->i == 1)
7281 (_("ERROR: %B: Must be processed by '%s' toolchain"),
7285 if (!out_list || out_list->tag != Tag_compatibility
7286 || strcmp (in_attr->s, out_list->attr.s) != 0)
7288 /* Add this compatibility tag to the output. */
7289 elf32_arm_add_eabi_attr_compat (obfd, in_attr->i, in_attr->s);
7292 out_attr = &out_list->attr;
7293 /* Check all the input tags with the same identifier. */
7296 if (out_list->tag != Tag_compatibility
7297 || in_attr->i != out_attr->i
7298 || strcmp (in_attr->s, out_attr->s) != 0)
7301 (_("ERROR: %B: Incompatible object tag '%s':%d"),
7302 ibfd, in_attr->s, in_attr->i);
7305 in_list = in_list->next;
7306 if (in_list->tag != Tag_compatibility
7307 || strcmp (in_attr->s, in_list->attr.s) != 0)
7309 in_attr = &in_list->attr;
7310 out_list = out_list->next;
7312 out_attr = &out_list->attr;
7315 /* Check the output doesn't have extra tags with this identifier. */
7316 if (out_list && out_list->tag == Tag_compatibility
7317 && strcmp (in_attr->s, out_list->attr.s) == 0)
7320 (_("ERROR: %B: Incompatible object tag '%s':%d"),
7321 ibfd, in_attr->s, out_list->attr.i);
7326 for (; in_list; in_list = in_list->next)
7328 if ((in_list->tag & 128) < 64)
7331 (_("Warning: %B: Unknown EABI object attribute %d"),
7332 ibfd, in_list->tag);
7340 /* Return TRUE if the two EABI versions are incompatible. */
7343 elf32_arm_versions_compatible (unsigned iver, unsigned over)
7345 /* v4 and v5 are the same spec before and after it was released,
7346 so allow mixing them. */
7347 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
7348 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
7351 return (iver == over);
7354 /* Merge backend specific data from an object file to the output
7355 object file when linking. */
7358 elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
7362 bfd_boolean flags_compatible = TRUE;
7365 /* Check if we have the same endianess. */
7366 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
7369 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
7370 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
7373 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
7376 /* The input BFD must have had its flags initialised. */
7377 /* The following seems bogus to me -- The flags are initialized in
7378 the assembler but I don't think an elf_flags_init field is
7379 written into the object. */
7380 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7382 in_flags = elf_elfheader (ibfd)->e_flags;
7383 out_flags = elf_elfheader (obfd)->e_flags;
7385 if (!elf_flags_init (obfd))
7387 /* If the input is the default architecture and had the default
7388 flags then do not bother setting the flags for the output
7389 architecture, instead allow future merges to do this. If no
7390 future merges ever set these flags then they will retain their
7391 uninitialised values, which surprise surprise, correspond
7392 to the default values. */
7393 if (bfd_get_arch_info (ibfd)->the_default
7394 && elf_elfheader (ibfd)->e_flags == 0)
7397 elf_flags_init (obfd) = TRUE;
7398 elf_elfheader (obfd)->e_flags = in_flags;
7400 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
7401 && bfd_get_arch_info (obfd)->the_default)
7402 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
7407 /* Determine what should happen if the input ARM architecture
7408 does not match the output ARM architecture. */
7409 if (! bfd_arm_merge_machines (ibfd, obfd))
7412 /* Identical flags must be compatible. */
7413 if (in_flags == out_flags)
7416 /* Check to see if the input BFD actually contains any sections. If
7417 not, its flags may not have been initialised either, but it
7418 cannot actually cause any incompatiblity. Do not short-circuit
7419 dynamic objects; their section list may be emptied by
7420 elf_link_add_object_symbols.
7422 Also check to see if there are no code sections in the input.
7423 In this case there is no need to check for code specific flags.
7424 XXX - do we need to worry about floating-point format compatability
7425 in data sections ? */
7426 if (!(ibfd->flags & DYNAMIC))
7428 bfd_boolean null_input_bfd = TRUE;
7429 bfd_boolean only_data_sections = TRUE;
7431 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7433 /* Ignore synthetic glue sections. */
7434 if (strcmp (sec->name, ".glue_7")
7435 && strcmp (sec->name, ".glue_7t"))
7437 if ((bfd_get_section_flags (ibfd, sec)
7438 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7439 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7440 only_data_sections = FALSE;
7442 null_input_bfd = FALSE;
7447 if (null_input_bfd || only_data_sections)
7451 /* Complain about various flag mismatches. */
7452 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
7453 EF_ARM_EABI_VERSION (out_flags)))
7456 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
7458 (in_flags & EF_ARM_EABIMASK) >> 24,
7459 (out_flags & EF_ARM_EABIMASK) >> 24);
7463 /* Not sure what needs to be checked for EABI versions >= 1. */
7464 /* VxWorks libraries do not use these flags. */
7465 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
7466 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
7467 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
7469 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
7472 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
7474 in_flags & EF_ARM_APCS_26 ? 26 : 32,
7475 out_flags & EF_ARM_APCS_26 ? 26 : 32);
7476 flags_compatible = FALSE;
7479 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
7481 if (in_flags & EF_ARM_APCS_FLOAT)
7483 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
7487 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
7490 flags_compatible = FALSE;
7493 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
7495 if (in_flags & EF_ARM_VFP_FLOAT)
7497 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
7501 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
7504 flags_compatible = FALSE;
7507 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
7509 if (in_flags & EF_ARM_MAVERICK_FLOAT)
7511 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
7515 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
7518 flags_compatible = FALSE;
7521 #ifdef EF_ARM_SOFT_FLOAT
7522 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
7524 /* We can allow interworking between code that is VFP format
7525 layout, and uses either soft float or integer regs for
7526 passing floating point arguments and results. We already
7527 know that the APCS_FLOAT flags match; similarly for VFP
7529 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
7530 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
7532 if (in_flags & EF_ARM_SOFT_FLOAT)
7534 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
7538 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
7541 flags_compatible = FALSE;
7546 /* Interworking mismatch is only a warning. */
7547 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
7549 if (in_flags & EF_ARM_INTERWORK)
7552 (_("Warning: %B supports interworking, whereas %B does not"),
7558 (_("Warning: %B does not support interworking, whereas %B does"),
7564 return flags_compatible;
7567 /* Display the flags field. */
7570 elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
7572 FILE * file = (FILE *) ptr;
7573 unsigned long flags;
7575 BFD_ASSERT (abfd != NULL && ptr != NULL);
7577 /* Print normal ELF private data. */
7578 _bfd_elf_print_private_bfd_data (abfd, ptr);
7580 flags = elf_elfheader (abfd)->e_flags;
7581 /* Ignore init flag - it may not be set, despite the flags field
7582 containing valid data. */
7584 /* xgettext:c-format */
7585 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
7587 switch (EF_ARM_EABI_VERSION (flags))
7589 case EF_ARM_EABI_UNKNOWN:
7590 /* The following flag bits are GNU extensions and not part of the
7591 official ARM ELF extended ABI. Hence they are only decoded if
7592 the EABI version is not set. */
7593 if (flags & EF_ARM_INTERWORK)
7594 fprintf (file, _(" [interworking enabled]"));
7596 if (flags & EF_ARM_APCS_26)
7597 fprintf (file, " [APCS-26]");
7599 fprintf (file, " [APCS-32]");
7601 if (flags & EF_ARM_VFP_FLOAT)
7602 fprintf (file, _(" [VFP float format]"));
7603 else if (flags & EF_ARM_MAVERICK_FLOAT)
7604 fprintf (file, _(" [Maverick float format]"));
7606 fprintf (file, _(" [FPA float format]"));
7608 if (flags & EF_ARM_APCS_FLOAT)
7609 fprintf (file, _(" [floats passed in float registers]"));
7611 if (flags & EF_ARM_PIC)
7612 fprintf (file, _(" [position independent]"));
7614 if (flags & EF_ARM_NEW_ABI)
7615 fprintf (file, _(" [new ABI]"));
7617 if (flags & EF_ARM_OLD_ABI)
7618 fprintf (file, _(" [old ABI]"));
7620 if (flags & EF_ARM_SOFT_FLOAT)
7621 fprintf (file, _(" [software FP]"));
7623 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
7624 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
7625 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
7626 | EF_ARM_MAVERICK_FLOAT);
7629 case EF_ARM_EABI_VER1:
7630 fprintf (file, _(" [Version1 EABI]"));
7632 if (flags & EF_ARM_SYMSARESORTED)
7633 fprintf (file, _(" [sorted symbol table]"));
7635 fprintf (file, _(" [unsorted symbol table]"));
7637 flags &= ~ EF_ARM_SYMSARESORTED;
7640 case EF_ARM_EABI_VER2:
7641 fprintf (file, _(" [Version2 EABI]"));
7643 if (flags & EF_ARM_SYMSARESORTED)
7644 fprintf (file, _(" [sorted symbol table]"));
7646 fprintf (file, _(" [unsorted symbol table]"));
7648 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
7649 fprintf (file, _(" [dynamic symbols use segment index]"));
7651 if (flags & EF_ARM_MAPSYMSFIRST)
7652 fprintf (file, _(" [mapping symbols precede others]"));
7654 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
7655 | EF_ARM_MAPSYMSFIRST);
7658 case EF_ARM_EABI_VER3:
7659 fprintf (file, _(" [Version3 EABI]"));
7662 case EF_ARM_EABI_VER4:
7663 fprintf (file, _(" [Version4 EABI]"));
7666 case EF_ARM_EABI_VER5:
7667 fprintf (file, _(" [Version5 EABI]"));
7669 if (flags & EF_ARM_BE8)
7670 fprintf (file, _(" [BE8]"));
7672 if (flags & EF_ARM_LE8)
7673 fprintf (file, _(" [LE8]"));
7675 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
7679 fprintf (file, _(" <EABI version unrecognised>"));
7683 flags &= ~ EF_ARM_EABIMASK;
7685 if (flags & EF_ARM_RELEXEC)
7686 fprintf (file, _(" [relocatable executable]"));
7688 if (flags & EF_ARM_HASENTRY)
7689 fprintf (file, _(" [has entry point]"));
7691 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
7694 fprintf (file, _("<Unrecognised flag bits set>"));
7702 elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
7704 switch (ELF_ST_TYPE (elf_sym->st_info))
7707 return ELF_ST_TYPE (elf_sym->st_info);
7710 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
7711 This allows us to distinguish between data used by Thumb instructions
7712 and non-data (which is probably code) inside Thumb regions of an
7714 if (type != STT_OBJECT && type != STT_TLS)
7715 return ELF_ST_TYPE (elf_sym->st_info);
7726 elf32_arm_gc_mark_hook (asection *sec,
7727 struct bfd_link_info *info,
7728 Elf_Internal_Rela *rel,
7729 struct elf_link_hash_entry *h,
7730 Elf_Internal_Sym *sym)
7733 switch (ELF32_R_TYPE (rel->r_info))
7735 case R_ARM_GNU_VTINHERIT:
7736 case R_ARM_GNU_VTENTRY:
7740 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
7743 /* Update the got entry reference counts for the section being removed. */
7746 elf32_arm_gc_sweep_hook (bfd * abfd,
7747 struct bfd_link_info * info,
7749 const Elf_Internal_Rela * relocs)
7751 Elf_Internal_Shdr *symtab_hdr;
7752 struct elf_link_hash_entry **sym_hashes;
7753 bfd_signed_vma *local_got_refcounts;
7754 const Elf_Internal_Rela *rel, *relend;
7755 struct elf32_arm_link_hash_table * globals;
7757 globals = elf32_arm_hash_table (info);
7759 elf_section_data (sec)->local_dynrel = NULL;
7761 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7762 sym_hashes = elf_sym_hashes (abfd);
7763 local_got_refcounts = elf_local_got_refcounts (abfd);
7765 relend = relocs + sec->reloc_count;
7766 for (rel = relocs; rel < relend; rel++)
7768 unsigned long r_symndx;
7769 struct elf_link_hash_entry *h = NULL;
7772 r_symndx = ELF32_R_SYM (rel->r_info);
7773 if (r_symndx >= symtab_hdr->sh_info)
7775 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7776 while (h->root.type == bfd_link_hash_indirect
7777 || h->root.type == bfd_link_hash_warning)
7778 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7781 r_type = ELF32_R_TYPE (rel->r_info);
7782 r_type = arm_real_reloc_type (globals, r_type);
7786 case R_ARM_GOT_PREL:
7787 case R_ARM_TLS_GD32:
7788 case R_ARM_TLS_IE32:
7791 if (h->got.refcount > 0)
7792 h->got.refcount -= 1;
7794 else if (local_got_refcounts != NULL)
7796 if (local_got_refcounts[r_symndx] > 0)
7797 local_got_refcounts[r_symndx] -= 1;
7801 case R_ARM_TLS_LDM32:
7802 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
7806 case R_ARM_ABS32_NOI:
7808 case R_ARM_REL32_NOI:
7814 case R_ARM_THM_CALL:
7815 case R_ARM_MOVW_ABS_NC:
7816 case R_ARM_MOVT_ABS:
7817 case R_ARM_MOVW_PREL_NC:
7818 case R_ARM_MOVT_PREL:
7819 case R_ARM_THM_MOVW_ABS_NC:
7820 case R_ARM_THM_MOVT_ABS:
7821 case R_ARM_THM_MOVW_PREL_NC:
7822 case R_ARM_THM_MOVT_PREL:
7823 /* Should the interworking branches be here also? */
7827 struct elf32_arm_link_hash_entry *eh;
7828 struct elf32_arm_relocs_copied **pp;
7829 struct elf32_arm_relocs_copied *p;
7831 eh = (struct elf32_arm_link_hash_entry *) h;
7833 if (h->plt.refcount > 0)
7835 h->plt.refcount -= 1;
7836 if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_CALL)
7837 eh->plt_thumb_refcount--;
7840 if (r_type == R_ARM_ABS32
7841 || r_type == R_ARM_REL32
7842 || r_type == R_ARM_ABS32_NOI
7843 || r_type == R_ARM_REL32_NOI)
7845 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
7847 if (p->section == sec)
7850 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
7851 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
7869 /* Look through the relocs for a section during the first phase. */
7872 elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
7873 asection *sec, const Elf_Internal_Rela *relocs)
7875 Elf_Internal_Shdr *symtab_hdr;
7876 struct elf_link_hash_entry **sym_hashes;
7877 struct elf_link_hash_entry **sym_hashes_end;
7878 const Elf_Internal_Rela *rel;
7879 const Elf_Internal_Rela *rel_end;
7882 bfd_vma *local_got_offsets;
7883 struct elf32_arm_link_hash_table *htab;
7885 if (info->relocatable)
7888 htab = elf32_arm_hash_table (info);
7891 /* Create dynamic sections for relocatable executables so that we can
7892 copy relocations. */
7893 if (htab->root.is_relocatable_executable
7894 && ! htab->root.dynamic_sections_created)
7896 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
7900 dynobj = elf_hash_table (info)->dynobj;
7901 local_got_offsets = elf_local_got_offsets (abfd);
7903 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7904 sym_hashes = elf_sym_hashes (abfd);
7905 sym_hashes_end = sym_hashes
7906 + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
7908 if (!elf_bad_symtab (abfd))
7909 sym_hashes_end -= symtab_hdr->sh_info;
7911 rel_end = relocs + sec->reloc_count;
7912 for (rel = relocs; rel < rel_end; rel++)
7914 struct elf_link_hash_entry *h;
7915 struct elf32_arm_link_hash_entry *eh;
7916 unsigned long r_symndx;
7919 r_symndx = ELF32_R_SYM (rel->r_info);
7920 r_type = ELF32_R_TYPE (rel->r_info);
7921 r_type = arm_real_reloc_type (htab, r_type);
7923 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7925 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
7930 if (r_symndx < symtab_hdr->sh_info)
7934 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7935 while (h->root.type == bfd_link_hash_indirect
7936 || h->root.type == bfd_link_hash_warning)
7937 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7940 eh = (struct elf32_arm_link_hash_entry *) h;
7945 case R_ARM_GOT_PREL:
7946 case R_ARM_TLS_GD32:
7947 case R_ARM_TLS_IE32:
7948 /* This symbol requires a global offset table entry. */
7950 int tls_type, old_tls_type;
7954 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
7955 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
7956 default: tls_type = GOT_NORMAL; break;
7962 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
7966 bfd_signed_vma *local_got_refcounts;
7968 /* This is a global offset table entry for a local symbol. */
7969 local_got_refcounts = elf_local_got_refcounts (abfd);
7970 if (local_got_refcounts == NULL)
7974 size = symtab_hdr->sh_info;
7975 size *= (sizeof (bfd_signed_vma) + sizeof(char));
7976 local_got_refcounts = bfd_zalloc (abfd, size);
7977 if (local_got_refcounts == NULL)
7979 elf_local_got_refcounts (abfd) = local_got_refcounts;
7980 elf32_arm_local_got_tls_type (abfd)
7981 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
7983 local_got_refcounts[r_symndx] += 1;
7984 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
7987 /* We will already have issued an error message if there is a
7988 TLS / non-TLS mismatch, based on the symbol type. We don't
7989 support any linker relaxations. So just combine any TLS
7991 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
7992 && tls_type != GOT_NORMAL)
7993 tls_type |= old_tls_type;
7995 if (old_tls_type != tls_type)
7998 elf32_arm_hash_entry (h)->tls_type = tls_type;
8000 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
8005 case R_ARM_TLS_LDM32:
8006 if (r_type == R_ARM_TLS_LDM32)
8007 htab->tls_ldm_got.refcount++;
8010 case R_ARM_GOTOFF32:
8012 if (htab->sgot == NULL)
8014 if (htab->root.dynobj == NULL)
8015 htab->root.dynobj = abfd;
8016 if (!create_got_section (htab->root.dynobj, info))
8022 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
8023 ldr __GOTT_INDEX__ offsets. */
8024 if (!htab->vxworks_p)
8029 case R_ARM_ABS32_NOI:
8031 case R_ARM_REL32_NOI:
8037 case R_ARM_THM_CALL:
8038 case R_ARM_MOVW_ABS_NC:
8039 case R_ARM_MOVT_ABS:
8040 case R_ARM_MOVW_PREL_NC:
8041 case R_ARM_MOVT_PREL:
8042 case R_ARM_THM_MOVW_ABS_NC:
8043 case R_ARM_THM_MOVT_ABS:
8044 case R_ARM_THM_MOVW_PREL_NC:
8045 case R_ARM_THM_MOVT_PREL:
8046 /* Should the interworking branches be listed here? */
8049 /* If this reloc is in a read-only section, we might
8050 need a copy reloc. We can't check reliably at this
8051 stage whether the section is read-only, as input
8052 sections have not yet been mapped to output sections.
8053 Tentatively set the flag for now, and correct in
8054 adjust_dynamic_symbol. */
8058 /* We may need a .plt entry if the function this reloc
8059 refers to is in a different object. We can't tell for
8060 sure yet, because something later might force the
8062 if (r_type != R_ARM_ABS32
8063 && r_type != R_ARM_REL32
8064 && r_type != R_ARM_ABS32_NOI
8065 && r_type != R_ARM_REL32_NOI
8066 && r_type != R_ARM_ABS12)
8069 /* If we create a PLT entry, this relocation will reference
8070 it, even if it's an ABS32 relocation. */
8071 h->plt.refcount += 1;
8073 if (r_type == R_ARM_THM_CALL)
8074 eh->plt_thumb_refcount += 1;
8077 /* If we are creating a shared library or relocatable executable,
8078 and this is a reloc against a global symbol, or a non PC
8079 relative reloc against a local symbol, then we need to copy
8080 the reloc into the shared library. However, if we are linking
8081 with -Bsymbolic, we do not need to copy a reloc against a
8082 global symbol which is defined in an object we are
8083 including in the link (i.e., DEF_REGULAR is set). At
8084 this point we have not seen all the input files, so it is
8085 possible that DEF_REGULAR is not set now but will be set
8086 later (it is never cleared). We account for that
8087 possibility below by storing information in the
8088 relocs_copied field of the hash table entry. */
8089 if ((info->shared || htab->root.is_relocatable_executable)
8090 && (sec->flags & SEC_ALLOC) != 0
8091 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
8092 || (h != NULL && ! h->needs_plt
8093 && (! info->symbolic || ! h->def_regular))))
8095 struct elf32_arm_relocs_copied *p, **head;
8097 /* When creating a shared object, we must copy these
8098 reloc types into the output file. We create a reloc
8099 section in dynobj and make room for this reloc. */
8104 name = (bfd_elf_string_from_elf_section
8106 elf_elfheader (abfd)->e_shstrndx,
8107 elf_section_data (sec)->rel_hdr.sh_name));
8111 BFD_ASSERT (reloc_section_p (htab, name, sec));
8113 sreloc = bfd_get_section_by_name (dynobj, name);
8118 flags = (SEC_HAS_CONTENTS | SEC_READONLY
8119 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
8120 if ((sec->flags & SEC_ALLOC) != 0
8121 /* BPABI objects never have dynamic
8122 relocations mapped. */
8123 && !htab->symbian_p)
8124 flags |= SEC_ALLOC | SEC_LOAD;
8125 sreloc = bfd_make_section_with_flags (dynobj,
8129 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
8133 elf_section_data (sec)->sreloc = sreloc;
8136 /* If this is a global symbol, we count the number of
8137 relocations we need for this symbol. */
8140 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
8144 /* Track dynamic relocs needed for local syms too.
8145 We really need local syms available to do this
8151 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
8156 vpp = &elf_section_data (s)->local_dynrel;
8157 head = (struct elf32_arm_relocs_copied **) vpp;
8161 if (p == NULL || p->section != sec)
8163 bfd_size_type amt = sizeof *p;
8165 p = bfd_alloc (htab->root.dynobj, amt);
8175 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
8181 /* This relocation describes the C++ object vtable hierarchy.
8182 Reconstruct it for later use during GC. */
8183 case R_ARM_GNU_VTINHERIT:
8184 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
8188 /* This relocation describes which C++ vtable entries are actually
8189 used. Record for later use during GC. */
8190 case R_ARM_GNU_VTENTRY:
8191 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
8200 /* Unwinding tables are not referenced directly. This pass marks them as
8201 required if the corresponding code section is marked. */
8204 elf32_arm_gc_mark_extra_sections(struct bfd_link_info *info,
8205 elf_gc_mark_hook_fn gc_mark_hook)
8208 Elf_Internal_Shdr **elf_shdrp;
8211 /* Marking EH data may cause additional code sections to be marked,
8212 requiring multiple passes. */
8217 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
8221 if (bfd_get_flavour (sub) != bfd_target_elf_flavour)
8224 elf_shdrp = elf_elfsections (sub);
8225 for (o = sub->sections; o != NULL; o = o->next)
8227 Elf_Internal_Shdr *hdr;
8228 hdr = &elf_section_data (o)->this_hdr;
8229 if (hdr->sh_type == SHT_ARM_EXIDX && hdr->sh_link
8231 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
8234 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
8244 /* Treat mapping symbols as special target symbols. */
8247 elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
8249 return bfd_is_arm_special_symbol_name (sym->name,
8250 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
8253 /* This is a copy of elf_find_function() from elf.c except that
8254 ARM mapping symbols are ignored when looking for function names
8255 and STT_ARM_TFUNC is considered to a function type. */
8258 arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
8262 const char ** filename_ptr,
8263 const char ** functionname_ptr)
8265 const char * filename = NULL;
8266 asymbol * func = NULL;
8267 bfd_vma low_func = 0;
8270 for (p = symbols; *p != NULL; p++)
8274 q = (elf_symbol_type *) *p;
8276 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
8281 filename = bfd_asymbol_name (&q->symbol);
8286 /* Skip mapping symbols. */
8287 if ((q->symbol.flags & BSF_LOCAL)
8288 && bfd_is_arm_special_symbol_name (q->symbol.name,
8289 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
8292 if (bfd_get_section (&q->symbol) == section
8293 && q->symbol.value >= low_func
8294 && q->symbol.value <= offset)
8296 func = (asymbol *) q;
8297 low_func = q->symbol.value;
8307 *filename_ptr = filename;
8308 if (functionname_ptr)
8309 *functionname_ptr = bfd_asymbol_name (func);
8315 /* Find the nearest line to a particular section and offset, for error
8316 reporting. This code is a duplicate of the code in elf.c, except
8317 that it uses arm_elf_find_function. */
8320 elf32_arm_find_nearest_line (bfd * abfd,
8324 const char ** filename_ptr,
8325 const char ** functionname_ptr,
8326 unsigned int * line_ptr)
8328 bfd_boolean found = FALSE;
8330 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
8332 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
8333 filename_ptr, functionname_ptr,
8335 & elf_tdata (abfd)->dwarf2_find_line_info))
8337 if (!*functionname_ptr)
8338 arm_elf_find_function (abfd, section, symbols, offset,
8339 *filename_ptr ? NULL : filename_ptr,
8345 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
8346 & found, filename_ptr,
8347 functionname_ptr, line_ptr,
8348 & elf_tdata (abfd)->line_info))
8351 if (found && (*functionname_ptr || *line_ptr))
8354 if (symbols == NULL)
8357 if (! arm_elf_find_function (abfd, section, symbols, offset,
8358 filename_ptr, functionname_ptr))
8366 elf32_arm_find_inliner_info (bfd * abfd,
8367 const char ** filename_ptr,
8368 const char ** functionname_ptr,
8369 unsigned int * line_ptr)
8372 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
8373 functionname_ptr, line_ptr,
8374 & elf_tdata (abfd)->dwarf2_find_line_info);
8378 /* Adjust a symbol defined by a dynamic object and referenced by a
8379 regular object. The current definition is in some section of the
8380 dynamic object, but we're not including those sections. We have to
8381 change the definition to something the rest of the link can
8385 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
8386 struct elf_link_hash_entry * h)
8390 unsigned int power_of_two;
8391 struct elf32_arm_link_hash_entry * eh;
8392 struct elf32_arm_link_hash_table *globals;
8394 globals = elf32_arm_hash_table (info);
8395 dynobj = elf_hash_table (info)->dynobj;
8397 /* Make sure we know what is going on here. */
8398 BFD_ASSERT (dynobj != NULL
8400 || h->u.weakdef != NULL
8403 && !h->def_regular)));
8405 eh = (struct elf32_arm_link_hash_entry *) h;
8407 /* If this is a function, put it in the procedure linkage table. We
8408 will fill in the contents of the procedure linkage table later,
8409 when we know the address of the .got section. */
8410 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
8413 if (h->plt.refcount <= 0
8414 || SYMBOL_CALLS_LOCAL (info, h)
8415 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8416 && h->root.type == bfd_link_hash_undefweak))
8418 /* This case can occur if we saw a PLT32 reloc in an input
8419 file, but the symbol was never referred to by a dynamic
8420 object, or if all references were garbage collected. In
8421 such a case, we don't actually need to build a procedure
8422 linkage table, and we can just do a PC24 reloc instead. */
8423 h->plt.offset = (bfd_vma) -1;
8424 eh->plt_thumb_refcount = 0;
8432 /* It's possible that we incorrectly decided a .plt reloc was
8433 needed for an R_ARM_PC24 or similar reloc to a non-function sym
8434 in check_relocs. We can't decide accurately between function
8435 and non-function syms in check-relocs; Objects loaded later in
8436 the link may change h->type. So fix it now. */
8437 h->plt.offset = (bfd_vma) -1;
8438 eh->plt_thumb_refcount = 0;
8441 /* If this is a weak symbol, and there is a real definition, the
8442 processor independent code will have arranged for us to see the
8443 real definition first, and we can just use the same value. */
8444 if (h->u.weakdef != NULL)
8446 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
8447 || h->u.weakdef->root.type == bfd_link_hash_defweak);
8448 h->root.u.def.section = h->u.weakdef->root.u.def.section;
8449 h->root.u.def.value = h->u.weakdef->root.u.def.value;
8453 /* If there are no non-GOT references, we do not need a copy
8455 if (!h->non_got_ref)
8458 /* This is a reference to a symbol defined by a dynamic object which
8459 is not a function. */
8461 /* If we are creating a shared library, we must presume that the
8462 only references to the symbol are via the global offset table.
8463 For such cases we need not do anything here; the relocations will
8464 be handled correctly by relocate_section. Relocatable executables
8465 can reference data in shared objects directly, so we don't need to
8466 do anything here. */
8467 if (info->shared || globals->root.is_relocatable_executable)
8472 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
8473 h->root.root.string);
8477 /* We must allocate the symbol in our .dynbss section, which will
8478 become part of the .bss section of the executable. There will be
8479 an entry for this symbol in the .dynsym section. The dynamic
8480 object will contain position independent code, so all references
8481 from the dynamic object to this symbol will go through the global
8482 offset table. The dynamic linker will use the .dynsym entry to
8483 determine the address it must put in the global offset table, so
8484 both the dynamic object and the regular object will refer to the
8485 same memory location for the variable. */
8486 s = bfd_get_section_by_name (dynobj, ".dynbss");
8487 BFD_ASSERT (s != NULL);
8489 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
8490 copy the initial value out of the dynamic object and into the
8491 runtime process image. We need to remember the offset into the
8492 .rel(a).bss section we are going to use. */
8493 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
8497 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
8498 BFD_ASSERT (srel != NULL);
8499 srel->size += RELOC_SIZE (globals);
8503 /* We need to figure out the alignment required for this symbol. I
8504 have no idea how ELF linkers handle this. */
8505 power_of_two = bfd_log2 (h->size);
8506 if (power_of_two > 3)
8509 /* Apply the required alignment. */
8510 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
8511 if (power_of_two > bfd_get_section_alignment (dynobj, s))
8513 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
8517 /* Define the symbol as being at this point in the section. */
8518 h->root.u.def.section = s;
8519 h->root.u.def.value = s->size;
8521 /* Increment the section size to make room for the symbol. */
8527 /* Allocate space in .plt, .got and associated reloc sections for
8531 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
8533 struct bfd_link_info *info;
8534 struct elf32_arm_link_hash_table *htab;
8535 struct elf32_arm_link_hash_entry *eh;
8536 struct elf32_arm_relocs_copied *p;
8538 eh = (struct elf32_arm_link_hash_entry *) h;
8540 if (h->root.type == bfd_link_hash_indirect)
8543 if (h->root.type == bfd_link_hash_warning)
8544 /* When warning symbols are created, they **replace** the "real"
8545 entry in the hash table, thus we never get to see the real
8546 symbol in a hash traversal. So look at it now. */
8547 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8549 info = (struct bfd_link_info *) inf;
8550 htab = elf32_arm_hash_table (info);
8552 if (htab->root.dynamic_sections_created
8553 && h->plt.refcount > 0)
8555 /* Make sure this symbol is output as a dynamic symbol.
8556 Undefined weak syms won't yet be marked as dynamic. */
8557 if (h->dynindx == -1
8558 && !h->forced_local)
8560 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8565 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
8567 asection *s = htab->splt;
8569 /* If this is the first .plt entry, make room for the special
8572 s->size += htab->plt_header_size;
8574 h->plt.offset = s->size;
8576 /* If we will insert a Thumb trampoline before this PLT, leave room
8578 if (!htab->use_blx && eh->plt_thumb_refcount > 0)
8580 h->plt.offset += PLT_THUMB_STUB_SIZE;
8581 s->size += PLT_THUMB_STUB_SIZE;
8584 /* If this symbol is not defined in a regular file, and we are
8585 not generating a shared library, then set the symbol to this
8586 location in the .plt. This is required to make function
8587 pointers compare as equal between the normal executable and
8588 the shared library. */
8592 h->root.u.def.section = s;
8593 h->root.u.def.value = h->plt.offset;
8595 /* Make sure the function is not marked as Thumb, in case
8596 it is the target of an ABS32 relocation, which will
8597 point to the PLT entry. */
8598 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
8599 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
8602 /* Make room for this entry. */
8603 s->size += htab->plt_entry_size;
8605 if (!htab->symbian_p)
8607 /* We also need to make an entry in the .got.plt section, which
8608 will be placed in the .got section by the linker script. */
8609 eh->plt_got_offset = htab->sgotplt->size;
8610 htab->sgotplt->size += 4;
8613 /* We also need to make an entry in the .rel(a).plt section. */
8614 htab->srelplt->size += RELOC_SIZE (htab);
8616 /* VxWorks executables have a second set of relocations for
8617 each PLT entry. They go in a separate relocation section,
8618 which is processed by the kernel loader. */
8619 if (htab->vxworks_p && !info->shared)
8621 /* There is a relocation for the initial PLT entry:
8622 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
8623 if (h->plt.offset == htab->plt_header_size)
8624 htab->srelplt2->size += RELOC_SIZE (htab);
8626 /* There are two extra relocations for each subsequent
8627 PLT entry: an R_ARM_32 relocation for the GOT entry,
8628 and an R_ARM_32 relocation for the PLT entry. */
8629 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
8634 h->plt.offset = (bfd_vma) -1;
8640 h->plt.offset = (bfd_vma) -1;
8644 if (h->got.refcount > 0)
8648 int tls_type = elf32_arm_hash_entry (h)->tls_type;
8651 /* Make sure this symbol is output as a dynamic symbol.
8652 Undefined weak syms won't yet be marked as dynamic. */
8653 if (h->dynindx == -1
8654 && !h->forced_local)
8656 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8660 if (!htab->symbian_p)
8663 h->got.offset = s->size;
8665 if (tls_type == GOT_UNKNOWN)
8668 if (tls_type == GOT_NORMAL)
8669 /* Non-TLS symbols need one GOT slot. */
8673 if (tls_type & GOT_TLS_GD)
8674 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
8676 if (tls_type & GOT_TLS_IE)
8677 /* R_ARM_TLS_IE32 needs one GOT slot. */
8681 dyn = htab->root.dynamic_sections_created;
8684 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8686 || !SYMBOL_REFERENCES_LOCAL (info, h)))
8689 if (tls_type != GOT_NORMAL
8690 && (info->shared || indx != 0)
8691 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8692 || h->root.type != bfd_link_hash_undefweak))
8694 if (tls_type & GOT_TLS_IE)
8695 htab->srelgot->size += RELOC_SIZE (htab);
8697 if (tls_type & GOT_TLS_GD)
8698 htab->srelgot->size += RELOC_SIZE (htab);
8700 if ((tls_type & GOT_TLS_GD) && indx != 0)
8701 htab->srelgot->size += RELOC_SIZE (htab);
8703 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8704 || h->root.type != bfd_link_hash_undefweak)
8706 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8707 htab->srelgot->size += RELOC_SIZE (htab);
8711 h->got.offset = (bfd_vma) -1;
8713 /* Allocate stubs for exported Thumb functions on v4t. */
8714 if (!htab->use_blx && h->dynindx != -1
8716 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
8717 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
8719 struct elf_link_hash_entry * th;
8720 struct bfd_link_hash_entry * bh;
8721 struct elf_link_hash_entry * myh;
8725 /* Create a new symbol to regist the real location of the function. */
8726 s = h->root.u.def.section;
8727 sprintf(name, "__real_%s", h->root.root.string);
8728 _bfd_generic_link_add_one_symbol (info, s->owner,
8729 name, BSF_GLOBAL, s,
8730 h->root.u.def.value,
8731 NULL, TRUE, FALSE, &bh);
8733 myh = (struct elf_link_hash_entry *) bh;
8734 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
8735 myh->forced_local = 1;
8736 eh->export_glue = myh;
8737 th = record_arm_to_thumb_glue (info, h);
8738 /* Point the symbol at the stub. */
8739 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
8740 h->root.u.def.section = th->root.u.def.section;
8741 h->root.u.def.value = th->root.u.def.value & ~1;
8744 if (eh->relocs_copied == NULL)
8747 /* In the shared -Bsymbolic case, discard space allocated for
8748 dynamic pc-relative relocs against symbols which turn out to be
8749 defined in regular objects. For the normal shared case, discard
8750 space for pc-relative relocs that have become local due to symbol
8751 visibility changes. */
8753 if (info->shared || htab->root.is_relocatable_executable)
8755 /* The only relocs that use pc_count are R_ARM_REL32 and
8756 R_ARM_REL32_NOI, which will appear on something like
8757 ".long foo - .". We want calls to protected symbols to resolve
8758 directly to the function rather than going via the plt. If people
8759 want function pointer comparisons to work as expected then they
8760 should avoid writing assembly like ".long foo - .". */
8761 if (SYMBOL_CALLS_LOCAL (info, h))
8763 struct elf32_arm_relocs_copied **pp;
8765 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
8767 p->count -= p->pc_count;
8776 /* Also discard relocs on undefined weak syms with non-default
8778 if (eh->relocs_copied != NULL
8779 && h->root.type == bfd_link_hash_undefweak)
8781 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8782 eh->relocs_copied = NULL;
8784 /* Make sure undefined weak symbols are output as a dynamic
8786 else if (h->dynindx == -1
8787 && !h->forced_local)
8789 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8794 else if (htab->root.is_relocatable_executable && h->dynindx == -1
8795 && h->root.type == bfd_link_hash_new)
8797 /* Output absolute symbols so that we can create relocations
8798 against them. For normal symbols we output a relocation
8799 against the section that contains them. */
8800 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8807 /* For the non-shared case, discard space for relocs against
8808 symbols which turn out to need copy relocs or are not
8814 || (htab->root.dynamic_sections_created
8815 && (h->root.type == bfd_link_hash_undefweak
8816 || h->root.type == bfd_link_hash_undefined))))
8818 /* Make sure this symbol is output as a dynamic symbol.
8819 Undefined weak syms won't yet be marked as dynamic. */
8820 if (h->dynindx == -1
8821 && !h->forced_local)
8823 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8827 /* If that succeeded, we know we'll be keeping all the
8829 if (h->dynindx != -1)
8833 eh->relocs_copied = NULL;
8838 /* Finally, allocate space. */
8839 for (p = eh->relocs_copied; p != NULL; p = p->next)
8841 asection *sreloc = elf_section_data (p->section)->sreloc;
8842 sreloc->size += p->count * RELOC_SIZE (htab);
8848 /* Find any dynamic relocs that apply to read-only sections. */
8851 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
8853 struct elf32_arm_link_hash_entry *eh;
8854 struct elf32_arm_relocs_copied *p;
8856 if (h->root.type == bfd_link_hash_warning)
8857 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8859 eh = (struct elf32_arm_link_hash_entry *) h;
8860 for (p = eh->relocs_copied; p != NULL; p = p->next)
8862 asection *s = p->section;
8864 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8866 struct bfd_link_info *info = (struct bfd_link_info *) inf;
8868 info->flags |= DF_TEXTREL;
8870 /* Not an error, just cut short the traversal. */
8878 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
8881 struct elf32_arm_link_hash_table *globals;
8883 globals = elf32_arm_hash_table (info);
8884 globals->byteswap_code = byteswap_code;
8887 /* Set the sizes of the dynamic sections. */
8890 elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
8891 struct bfd_link_info * info)
8898 struct elf32_arm_link_hash_table *htab;
8900 htab = elf32_arm_hash_table (info);
8901 dynobj = elf_hash_table (info)->dynobj;
8902 BFD_ASSERT (dynobj != NULL);
8903 check_use_blx (htab);
8905 if (elf_hash_table (info)->dynamic_sections_created)
8907 /* Set the contents of the .interp section to the interpreter. */
8908 if (info->executable)
8910 s = bfd_get_section_by_name (dynobj, ".interp");
8911 BFD_ASSERT (s != NULL);
8912 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8913 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8917 /* Set up .got offsets for local syms, and space for local dynamic
8919 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8921 bfd_signed_vma *local_got;
8922 bfd_signed_vma *end_local_got;
8923 char *local_tls_type;
8924 bfd_size_type locsymcount;
8925 Elf_Internal_Shdr *symtab_hdr;
8928 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
8931 for (s = ibfd->sections; s != NULL; s = s->next)
8933 struct elf32_arm_relocs_copied *p;
8935 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
8937 if (!bfd_is_abs_section (p->section)
8938 && bfd_is_abs_section (p->section->output_section))
8940 /* Input section has been discarded, either because
8941 it is a copy of a linkonce section or due to
8942 linker script /DISCARD/, so we'll be discarding
8945 else if (p->count != 0)
8947 srel = elf_section_data (p->section)->sreloc;
8948 srel->size += p->count * RELOC_SIZE (htab);
8949 if ((p->section->output_section->flags & SEC_READONLY) != 0)
8950 info->flags |= DF_TEXTREL;
8955 local_got = elf_local_got_refcounts (ibfd);
8959 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
8960 locsymcount = symtab_hdr->sh_info;
8961 end_local_got = local_got + locsymcount;
8962 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
8964 srel = htab->srelgot;
8965 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
8969 *local_got = s->size;
8970 if (*local_tls_type & GOT_TLS_GD)
8971 /* TLS_GD relocs need an 8-byte structure in the GOT. */
8973 if (*local_tls_type & GOT_TLS_IE)
8975 if (*local_tls_type == GOT_NORMAL)
8978 if (info->shared || *local_tls_type == GOT_TLS_GD)
8979 srel->size += RELOC_SIZE (htab);
8982 *local_got = (bfd_vma) -1;
8986 if (htab->tls_ldm_got.refcount > 0)
8988 /* Allocate two GOT entries and one dynamic relocation (if necessary)
8989 for R_ARM_TLS_LDM32 relocations. */
8990 htab->tls_ldm_got.offset = htab->sgot->size;
8991 htab->sgot->size += 8;
8993 htab->srelgot->size += RELOC_SIZE (htab);
8996 htab->tls_ldm_got.offset = -1;
8998 /* Allocate global sym .plt and .got entries, and space for global
8999 sym dynamic relocs. */
9000 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
9002 /* Here we rummage through the found bfds to collect glue information. */
9003 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9005 /* Initialise mapping tables for code/data. */
9006 bfd_elf32_arm_init_maps (ibfd);
9008 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
9009 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
9010 /* xgettext:c-format */
9011 _bfd_error_handler (_("Errors encountered processing file %s"),
9015 /* The check_relocs and adjust_dynamic_symbol entry points have
9016 determined the sizes of the various dynamic sections. Allocate
9020 for (s = dynobj->sections; s != NULL; s = s->next)
9024 if ((s->flags & SEC_LINKER_CREATED) == 0)
9027 /* It's OK to base decisions on the section name, because none
9028 of the dynobj section names depend upon the input files. */
9029 name = bfd_get_section_name (dynobj, s);
9031 if (strcmp (name, ".plt") == 0)
9033 /* Remember whether there is a PLT. */
9036 else if (CONST_STRNEQ (name, ".rel"))
9040 /* Remember whether there are any reloc sections other
9041 than .rel(a).plt and .rela.plt.unloaded. */
9042 if (s != htab->srelplt && s != htab->srelplt2)
9045 /* We use the reloc_count field as a counter if we need
9046 to copy relocs into the output file. */
9050 else if (! CONST_STRNEQ (name, ".got")
9051 && strcmp (name, ".dynbss") != 0)
9053 /* It's not one of our sections, so don't allocate space. */
9059 /* If we don't need this section, strip it from the
9060 output file. This is mostly to handle .rel(a).bss and
9061 .rel(a).plt. We must create both sections in
9062 create_dynamic_sections, because they must be created
9063 before the linker maps input sections to output
9064 sections. The linker does that before
9065 adjust_dynamic_symbol is called, and it is that
9066 function which decides whether anything needs to go
9067 into these sections. */
9068 s->flags |= SEC_EXCLUDE;
9072 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9075 /* Allocate memory for the section contents. */
9076 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
9077 if (s->contents == NULL)
9081 if (elf_hash_table (info)->dynamic_sections_created)
9083 /* Add some entries to the .dynamic section. We fill in the
9084 values later, in elf32_arm_finish_dynamic_sections, but we
9085 must add the entries now so that we get the correct size for
9086 the .dynamic section. The DT_DEBUG entry is filled in by the
9087 dynamic linker and used by the debugger. */
9088 #define add_dynamic_entry(TAG, VAL) \
9089 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9091 if (info->executable)
9093 if (!add_dynamic_entry (DT_DEBUG, 0))
9099 if ( !add_dynamic_entry (DT_PLTGOT, 0)
9100 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9101 || !add_dynamic_entry (DT_PLTREL,
9102 htab->use_rel ? DT_REL : DT_RELA)
9103 || !add_dynamic_entry (DT_JMPREL, 0))
9111 if (!add_dynamic_entry (DT_REL, 0)
9112 || !add_dynamic_entry (DT_RELSZ, 0)
9113 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
9118 if (!add_dynamic_entry (DT_RELA, 0)
9119 || !add_dynamic_entry (DT_RELASZ, 0)
9120 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
9125 /* If any dynamic relocs apply to a read-only section,
9126 then we need a DT_TEXTREL entry. */
9127 if ((info->flags & DF_TEXTREL) == 0)
9128 elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
9131 if ((info->flags & DF_TEXTREL) != 0)
9133 if (!add_dynamic_entry (DT_TEXTREL, 0))
9137 #undef add_dynamic_entry
9142 /* Finish up dynamic symbol handling. We set the contents of various
9143 dynamic sections here. */
9146 elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info,
9147 struct elf_link_hash_entry * h, Elf_Internal_Sym * sym)
9150 struct elf32_arm_link_hash_table *htab;
9151 struct elf32_arm_link_hash_entry *eh;
9153 dynobj = elf_hash_table (info)->dynobj;
9154 htab = elf32_arm_hash_table (info);
9155 eh = (struct elf32_arm_link_hash_entry *) h;
9157 if (h->plt.offset != (bfd_vma) -1)
9163 Elf_Internal_Rela rel;
9165 /* This symbol has an entry in the procedure linkage table. Set
9168 BFD_ASSERT (h->dynindx != -1);
9170 splt = bfd_get_section_by_name (dynobj, ".plt");
9171 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
9172 BFD_ASSERT (splt != NULL && srel != NULL);
9174 /* Fill in the entry in the procedure linkage table. */
9175 if (htab->symbian_p)
9177 put_arm_insn (htab, output_bfd,
9178 elf32_arm_symbian_plt_entry[0],
9179 splt->contents + h->plt.offset);
9180 bfd_put_32 (output_bfd,
9181 elf32_arm_symbian_plt_entry[1],
9182 splt->contents + h->plt.offset + 4);
9184 /* Fill in the entry in the .rel.plt section. */
9185 rel.r_offset = (splt->output_section->vma
9186 + splt->output_offset
9187 + h->plt.offset + 4);
9188 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
9190 /* Get the index in the procedure linkage table which
9191 corresponds to this symbol. This is the index of this symbol
9192 in all the symbols for which we are making plt entries. The
9193 first entry in the procedure linkage table is reserved. */
9194 plt_index = ((h->plt.offset - htab->plt_header_size)
9195 / htab->plt_entry_size);
9199 bfd_vma got_offset, got_address, plt_address;
9200 bfd_vma got_displacement;
9204 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
9205 BFD_ASSERT (sgot != NULL);
9207 /* Get the offset into the .got.plt table of the entry that
9208 corresponds to this function. */
9209 got_offset = eh->plt_got_offset;
9211 /* Get the index in the procedure linkage table which
9212 corresponds to this symbol. This is the index of this symbol
9213 in all the symbols for which we are making plt entries. The
9214 first three entries in .got.plt are reserved; after that
9215 symbols appear in the same order as in .plt. */
9216 plt_index = (got_offset - 12) / 4;
9218 /* Calculate the address of the GOT entry. */
9219 got_address = (sgot->output_section->vma
9220 + sgot->output_offset
9223 /* ...and the address of the PLT entry. */
9224 plt_address = (splt->output_section->vma
9225 + splt->output_offset
9228 ptr = htab->splt->contents + h->plt.offset;
9229 if (htab->vxworks_p && info->shared)
9234 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
9236 val = elf32_arm_vxworks_shared_plt_entry[i];
9238 val |= got_address - sgot->output_section->vma;
9240 val |= plt_index * RELOC_SIZE (htab);
9241 if (i == 2 || i == 5)
9242 bfd_put_32 (output_bfd, val, ptr);
9244 put_arm_insn (htab, output_bfd, val, ptr);
9247 else if (htab->vxworks_p)
9252 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
9254 val = elf32_arm_vxworks_exec_plt_entry[i];
9258 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
9260 val |= plt_index * RELOC_SIZE (htab);
9261 if (i == 2 || i == 5)
9262 bfd_put_32 (output_bfd, val, ptr);
9264 put_arm_insn (htab, output_bfd, val, ptr);
9267 loc = (htab->srelplt2->contents
9268 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
9270 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
9271 referencing the GOT for this PLT entry. */
9272 rel.r_offset = plt_address + 8;
9273 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9274 rel.r_addend = got_offset;
9275 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9276 loc += RELOC_SIZE (htab);
9278 /* Create the R_ARM_ABS32 relocation referencing the
9279 beginning of the PLT for this GOT entry. */
9280 rel.r_offset = got_address;
9281 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
9283 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9287 /* Calculate the displacement between the PLT slot and the
9288 entry in the GOT. The eight-byte offset accounts for the
9289 value produced by adding to pc in the first instruction
9291 got_displacement = got_address - (plt_address + 8);
9293 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
9295 if (!htab->use_blx && eh->plt_thumb_refcount > 0)
9297 put_thumb_insn (htab, output_bfd,
9298 elf32_arm_plt_thumb_stub[0], ptr - 4);
9299 put_thumb_insn (htab, output_bfd,
9300 elf32_arm_plt_thumb_stub[1], ptr - 2);
9303 put_arm_insn (htab, output_bfd,
9304 elf32_arm_plt_entry[0]
9305 | ((got_displacement & 0x0ff00000) >> 20),
9307 put_arm_insn (htab, output_bfd,
9308 elf32_arm_plt_entry[1]
9309 | ((got_displacement & 0x000ff000) >> 12),
9311 put_arm_insn (htab, output_bfd,
9312 elf32_arm_plt_entry[2]
9313 | (got_displacement & 0x00000fff),
9315 #ifdef FOUR_WORD_PLT
9316 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
9320 /* Fill in the entry in the global offset table. */
9321 bfd_put_32 (output_bfd,
9322 (splt->output_section->vma
9323 + splt->output_offset),
9324 sgot->contents + got_offset);
9326 /* Fill in the entry in the .rel(a).plt section. */
9328 rel.r_offset = got_address;
9329 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
9332 loc = srel->contents + plt_index * RELOC_SIZE (htab);
9333 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9335 if (!h->def_regular)
9337 /* Mark the symbol as undefined, rather than as defined in
9338 the .plt section. Leave the value alone. */
9339 sym->st_shndx = SHN_UNDEF;
9340 /* If the symbol is weak, we do need to clear the value.
9341 Otherwise, the PLT entry would provide a definition for
9342 the symbol even if the symbol wasn't defined anywhere,
9343 and so the symbol would never be NULL. */
9344 if (!h->ref_regular_nonweak)
9349 if (h->got.offset != (bfd_vma) -1
9350 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
9351 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
9355 Elf_Internal_Rela rel;
9359 /* This symbol has an entry in the global offset table. Set it
9361 sgot = bfd_get_section_by_name (dynobj, ".got");
9362 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
9363 BFD_ASSERT (sgot != NULL && srel != NULL);
9365 offset = (h->got.offset & ~(bfd_vma) 1);
9367 rel.r_offset = (sgot->output_section->vma
9368 + sgot->output_offset
9371 /* If this is a static link, or it is a -Bsymbolic link and the
9372 symbol is defined locally or was forced to be local because
9373 of a version file, we just want to emit a RELATIVE reloc.
9374 The entry in the global offset table will already have been
9375 initialized in the relocate_section function. */
9377 && SYMBOL_REFERENCES_LOCAL (info, h))
9379 BFD_ASSERT((h->got.offset & 1) != 0);
9380 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
9383 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
9384 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
9389 BFD_ASSERT((h->got.offset & 1) == 0);
9390 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
9391 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
9394 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
9395 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9401 Elf_Internal_Rela rel;
9404 /* This symbol needs a copy reloc. Set it up. */
9405 BFD_ASSERT (h->dynindx != -1
9406 && (h->root.type == bfd_link_hash_defined
9407 || h->root.type == bfd_link_hash_defweak));
9409 s = bfd_get_section_by_name (h->root.u.def.section->owner,
9410 RELOC_SECTION (htab, ".bss"));
9411 BFD_ASSERT (s != NULL);
9414 rel.r_offset = (h->root.u.def.value
9415 + h->root.u.def.section->output_section->vma
9416 + h->root.u.def.section->output_offset);
9417 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
9418 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
9419 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9422 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
9423 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
9424 to the ".got" section. */
9425 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
9426 || (!htab->vxworks_p && h == htab->root.hgot))
9427 sym->st_shndx = SHN_ABS;
9432 /* Finish up the dynamic sections. */
9435 elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
9441 dynobj = elf_hash_table (info)->dynobj;
9443 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
9444 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
9445 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
9447 if (elf_hash_table (info)->dynamic_sections_created)
9450 Elf32_External_Dyn *dyncon, *dynconend;
9451 struct elf32_arm_link_hash_table *htab;
9453 htab = elf32_arm_hash_table (info);
9454 splt = bfd_get_section_by_name (dynobj, ".plt");
9455 BFD_ASSERT (splt != NULL && sdyn != NULL);
9457 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9458 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9460 for (; dyncon < dynconend; dyncon++)
9462 Elf_Internal_Dyn dyn;
9466 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9477 goto get_vma_if_bpabi;
9480 goto get_vma_if_bpabi;
9483 goto get_vma_if_bpabi;
9485 name = ".gnu.version";
9486 goto get_vma_if_bpabi;
9488 name = ".gnu.version_d";
9489 goto get_vma_if_bpabi;
9491 name = ".gnu.version_r";
9492 goto get_vma_if_bpabi;
9498 name = RELOC_SECTION (htab, ".plt");
9500 s = bfd_get_section_by_name (output_bfd, name);
9501 BFD_ASSERT (s != NULL);
9502 if (!htab->symbian_p)
9503 dyn.d_un.d_ptr = s->vma;
9505 /* In the BPABI, tags in the PT_DYNAMIC section point
9506 at the file offset, not the memory address, for the
9507 convenience of the post linker. */
9508 dyn.d_un.d_ptr = s->filepos;
9509 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9513 if (htab->symbian_p)
9518 s = bfd_get_section_by_name (output_bfd,
9519 RELOC_SECTION (htab, ".plt"));
9520 BFD_ASSERT (s != NULL);
9521 dyn.d_un.d_val = s->size;
9522 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9527 if (!htab->symbian_p)
9529 /* My reading of the SVR4 ABI indicates that the
9530 procedure linkage table relocs (DT_JMPREL) should be
9531 included in the overall relocs (DT_REL). This is
9532 what Solaris does. However, UnixWare can not handle
9533 that case. Therefore, we override the DT_RELSZ entry
9534 here to make it not include the JMPREL relocs. Since
9535 the linker script arranges for .rel(a).plt to follow all
9536 other relocation sections, we don't have to worry
9537 about changing the DT_REL entry. */
9538 s = bfd_get_section_by_name (output_bfd,
9539 RELOC_SECTION (htab, ".plt"));
9541 dyn.d_un.d_val -= s->size;
9542 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9549 /* In the BPABI, the DT_REL tag must point at the file
9550 offset, not the VMA, of the first relocation
9551 section. So, we use code similar to that in
9552 elflink.c, but do not check for SHF_ALLOC on the
9553 relcoation section, since relocations sections are
9554 never allocated under the BPABI. The comments above
9555 about Unixware notwithstanding, we include all of the
9556 relocations here. */
9557 if (htab->symbian_p)
9560 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
9561 ? SHT_REL : SHT_RELA);
9563 for (i = 1; i < elf_numsections (output_bfd); i++)
9565 Elf_Internal_Shdr *hdr
9566 = elf_elfsections (output_bfd)[i];
9567 if (hdr->sh_type == type)
9569 if (dyn.d_tag == DT_RELSZ
9570 || dyn.d_tag == DT_RELASZ)
9571 dyn.d_un.d_val += hdr->sh_size;
9572 else if ((ufile_ptr) hdr->sh_offset
9573 <= dyn.d_un.d_val - 1)
9574 dyn.d_un.d_val = hdr->sh_offset;
9577 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9581 /* Set the bottom bit of DT_INIT/FINI if the
9582 corresponding function is Thumb. */
9584 name = info->init_function;
9587 name = info->fini_function;
9589 /* If it wasn't set by elf_bfd_final_link
9590 then there is nothing to adjust. */
9591 if (dyn.d_un.d_val != 0)
9593 struct elf_link_hash_entry * eh;
9595 eh = elf_link_hash_lookup (elf_hash_table (info), name,
9596 FALSE, FALSE, TRUE);
9597 if (eh != (struct elf_link_hash_entry *) NULL
9598 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
9600 dyn.d_un.d_val |= 1;
9601 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9608 /* Fill in the first entry in the procedure linkage table. */
9609 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
9611 const bfd_vma *plt0_entry;
9612 bfd_vma got_address, plt_address, got_displacement;
9614 /* Calculate the addresses of the GOT and PLT. */
9615 got_address = sgot->output_section->vma + sgot->output_offset;
9616 plt_address = splt->output_section->vma + splt->output_offset;
9618 if (htab->vxworks_p)
9620 /* The VxWorks GOT is relocated by the dynamic linker.
9621 Therefore, we must emit relocations rather than simply
9622 computing the values now. */
9623 Elf_Internal_Rela rel;
9625 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
9626 put_arm_insn (htab, output_bfd, plt0_entry[0],
9627 splt->contents + 0);
9628 put_arm_insn (htab, output_bfd, plt0_entry[1],
9629 splt->contents + 4);
9630 put_arm_insn (htab, output_bfd, plt0_entry[2],
9631 splt->contents + 8);
9632 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
9634 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
9635 rel.r_offset = plt_address + 12;
9636 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9638 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
9639 htab->srelplt2->contents);
9643 got_displacement = got_address - (plt_address + 16);
9645 plt0_entry = elf32_arm_plt0_entry;
9646 put_arm_insn (htab, output_bfd, plt0_entry[0],
9647 splt->contents + 0);
9648 put_arm_insn (htab, output_bfd, plt0_entry[1],
9649 splt->contents + 4);
9650 put_arm_insn (htab, output_bfd, plt0_entry[2],
9651 splt->contents + 8);
9652 put_arm_insn (htab, output_bfd, plt0_entry[3],
9653 splt->contents + 12);
9655 #ifdef FOUR_WORD_PLT
9656 /* The displacement value goes in the otherwise-unused
9657 last word of the second entry. */
9658 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
9660 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
9665 /* UnixWare sets the entsize of .plt to 4, although that doesn't
9666 really seem like the right value. */
9667 if (splt->output_section->owner == output_bfd)
9668 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
9670 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
9672 /* Correct the .rel(a).plt.unloaded relocations. They will have
9673 incorrect symbol indexes. */
9677 num_plts = ((htab->splt->size - htab->plt_header_size)
9678 / htab->plt_entry_size);
9679 p = htab->srelplt2->contents + RELOC_SIZE (htab);
9681 for (; num_plts; num_plts--)
9683 Elf_Internal_Rela rel;
9685 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
9686 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9687 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
9688 p += RELOC_SIZE (htab);
9690 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
9691 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
9692 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
9693 p += RELOC_SIZE (htab);
9698 /* Fill in the first three entries in the global offset table. */
9704 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
9706 bfd_put_32 (output_bfd,
9707 sdyn->output_section->vma + sdyn->output_offset,
9709 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
9710 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
9713 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
9720 elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
9722 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
9723 struct elf32_arm_link_hash_table *globals;
9725 i_ehdrp = elf_elfheader (abfd);
9727 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
9728 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
9730 i_ehdrp->e_ident[EI_OSABI] = 0;
9731 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
9735 globals = elf32_arm_hash_table (link_info);
9736 if (globals->byteswap_code)
9737 i_ehdrp->e_flags |= EF_ARM_BE8;
9741 static enum elf_reloc_type_class
9742 elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
9744 switch ((int) ELF32_R_TYPE (rela->r_info))
9746 case R_ARM_RELATIVE:
9747 return reloc_class_relative;
9748 case R_ARM_JUMP_SLOT:
9749 return reloc_class_plt;
9751 return reloc_class_copy;
9753 return reloc_class_normal;
9757 /* Set the right machine number for an Arm ELF file. */
9760 elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
9762 if (hdr->sh_type == SHT_NOTE)
9763 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
9769 elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
9771 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
9774 /* Return TRUE if this is an unwinding table entry. */
9777 is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
9779 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
9780 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
9784 /* Set the type and flags for an ARM section. We do this by
9785 the section name, which is a hack, but ought to work. */
9788 elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
9792 name = bfd_get_section_name (abfd, sec);
9794 if (is_arm_elf_unwind_section_name (abfd, name))
9796 hdr->sh_type = SHT_ARM_EXIDX;
9797 hdr->sh_flags |= SHF_LINK_ORDER;
9799 else if (strcmp(name, ".ARM.attributes") == 0)
9801 hdr->sh_type = SHT_ARM_ATTRIBUTES;
9806 /* Parse an Arm EABI attributes section. */
9808 elf32_arm_parse_attributes (bfd *abfd, Elf_Internal_Shdr * hdr)
9814 contents = bfd_malloc (hdr->sh_size);
9817 if (!bfd_get_section_contents (abfd, hdr->bfd_section, contents, 0,
9826 len = hdr->sh_size - 1;
9830 bfd_vma section_len;
9832 section_len = bfd_get_32 (abfd, p);
9834 if (section_len > len)
9837 namelen = strlen ((char *)p) + 1;
9838 section_len -= namelen + 4;
9839 if (strcmp((char *)p, "aeabi") != 0)
9841 /* Vendor section. Ignore it. */
9842 p += namelen + section_len;
9847 while (section_len > 0)
9852 bfd_vma subsection_len;
9855 tag = read_unsigned_leb128 (abfd, p, &n);
9857 subsection_len = bfd_get_32 (abfd, p);
9859 if (subsection_len > section_len)
9860 subsection_len = section_len;
9861 section_len -= subsection_len;
9862 subsection_len -= n + 4;
9863 end = p + subsection_len;
9869 bfd_boolean is_string;
9871 tag = read_unsigned_leb128 (abfd, p, &n);
9873 if (tag == 4 || tag == 5)
9878 is_string = (tag & 1) != 0;
9879 if (tag == Tag_compatibility)
9881 val = read_unsigned_leb128 (abfd, p, &n);
9883 elf32_arm_add_eabi_attr_compat (abfd, val,
9885 p += strlen ((char *)p) + 1;
9889 elf32_arm_add_eabi_attr_string (abfd, tag,
9891 p += strlen ((char *)p) + 1;
9895 val = read_unsigned_leb128 (abfd, p, &n);
9897 elf32_arm_add_eabi_attr_int (abfd, tag, val);
9903 /* Don't have anywhere convenient to attach these.
9904 Fall through for now. */
9906 /* Ignore things we don't kow about. */
9907 p += subsection_len;
9918 /* Handle an ARM specific section when reading an object file. This is
9919 called when bfd_section_from_shdr finds a section with an unknown
9923 elf32_arm_section_from_shdr (bfd *abfd,
9924 Elf_Internal_Shdr * hdr,
9928 /* There ought to be a place to keep ELF backend specific flags, but
9929 at the moment there isn't one. We just keep track of the
9930 sections by their name, instead. Fortunately, the ABI gives
9931 names for all the ARM specific sections, so we will probably get
9933 switch (hdr->sh_type)
9936 case SHT_ARM_PREEMPTMAP:
9937 case SHT_ARM_ATTRIBUTES:
9944 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
9947 if (hdr->sh_type == SHT_ARM_ATTRIBUTES)
9948 elf32_arm_parse_attributes(abfd, hdr);
9952 /* A structure used to record a list of sections, independently
9953 of the next and prev fields in the asection structure. */
9954 typedef struct section_list
9957 struct section_list * next;
9958 struct section_list * prev;
9962 /* Unfortunately we need to keep a list of sections for which
9963 an _arm_elf_section_data structure has been allocated. This
9964 is because it is possible for functions like elf32_arm_write_section
9965 to be called on a section which has had an elf_data_structure
9966 allocated for it (and so the used_by_bfd field is valid) but
9967 for which the ARM extended version of this structure - the
9968 _arm_elf_section_data structure - has not been allocated. */
9969 static section_list * sections_with_arm_elf_section_data = NULL;
9972 record_section_with_arm_elf_section_data (asection * sec)
9974 struct section_list * entry;
9976 entry = bfd_malloc (sizeof (* entry));
9980 entry->next = sections_with_arm_elf_section_data;
9982 if (entry->next != NULL)
9983 entry->next->prev = entry;
9984 sections_with_arm_elf_section_data = entry;
9987 static struct section_list *
9988 find_arm_elf_section_entry (asection * sec)
9990 struct section_list * entry;
9991 static struct section_list * last_entry = NULL;
9993 /* This is a short cut for the typical case where the sections are added
9994 to the sections_with_arm_elf_section_data list in forward order and
9995 then looked up here in backwards order. This makes a real difference
9996 to the ld-srec/sec64k.exp linker test. */
9997 entry = sections_with_arm_elf_section_data;
9998 if (last_entry != NULL)
10000 if (last_entry->sec == sec)
10001 entry = last_entry;
10002 else if (last_entry->next != NULL
10003 && last_entry->next->sec == sec)
10004 entry = last_entry->next;
10007 for (; entry; entry = entry->next)
10008 if (entry->sec == sec)
10012 /* Record the entry prior to this one - it is the entry we are most
10013 likely to want to locate next time. Also this way if we have been
10014 called from unrecord_section_with_arm_elf_section_data() we will not
10015 be caching a pointer that is about to be freed. */
10016 last_entry = entry->prev;
10021 static _arm_elf_section_data *
10022 get_arm_elf_section_data (asection * sec)
10024 struct section_list * entry;
10026 entry = find_arm_elf_section_entry (sec);
10029 return elf32_arm_section_data (entry->sec);
10035 unrecord_section_with_arm_elf_section_data (asection * sec)
10037 struct section_list * entry;
10039 entry = find_arm_elf_section_entry (sec);
10043 if (entry->prev != NULL)
10044 entry->prev->next = entry->next;
10045 if (entry->next != NULL)
10046 entry->next->prev = entry->prev;
10047 if (entry == sections_with_arm_elf_section_data)
10048 sections_with_arm_elf_section_data = entry->next;
10057 struct bfd_link_info *info;
10059 bfd_vma plt_offset;
10060 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
10061 asection *, struct elf_link_hash_entry *);
10062 } output_arch_syminfo;
10064 enum map_symbol_type
10072 /* Output a single PLT mapping symbol. */
10075 elf32_arm_ouput_plt_map_sym (output_arch_syminfo *osi,
10076 enum map_symbol_type type,
10079 static const char *names[3] = {"$a", "$t", "$d"};
10080 struct elf32_arm_link_hash_table *htab;
10081 Elf_Internal_Sym sym;
10083 htab = elf32_arm_hash_table (osi->info);
10084 sym.st_value = osi->plt_offset + offset;
10087 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
10088 sym.st_shndx = osi->plt_shndx;
10089 if (!osi->func (osi->finfo, names[type], &sym, htab->splt, NULL))
10095 /* Output mapping symbols for PLT entries associated with H. */
10098 elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
10100 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
10101 struct elf32_arm_link_hash_table *htab;
10102 struct elf32_arm_link_hash_entry *eh;
10105 htab = elf32_arm_hash_table (osi->info);
10107 if (h->root.type == bfd_link_hash_indirect)
10110 if (h->root.type == bfd_link_hash_warning)
10111 /* When warning symbols are created, they **replace** the "real"
10112 entry in the hash table, thus we never get to see the real
10113 symbol in a hash traversal. So look at it now. */
10114 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10116 if (h->plt.offset == (bfd_vma) -1)
10119 eh = (struct elf32_arm_link_hash_entry *) h;
10120 addr = h->plt.offset;
10121 if (htab->symbian_p)
10123 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
10125 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 4))
10128 else if (htab->vxworks_p)
10130 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
10132 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 8))
10134 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr + 12))
10136 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 20))
10141 bfd_boolean thumb_stub;
10143 thumb_stub = eh->plt_thumb_refcount > 0 && !htab->use_blx;
10146 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_THUMB, addr - 4))
10149 #ifdef FOUR_WORD_PLT
10150 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
10152 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 12))
10155 /* A three-word PLT with no Thumb thunk contains only Arm code,
10156 so only need to output a mapping symbol for the first PLT entry and
10157 entries with thumb thunks. */
10158 if (thumb_stub || addr == 20)
10160 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
10170 /* Output mapping symbols for the PLT. */
10173 elf32_arm_output_arch_local_syms (bfd *output_bfd,
10174 struct bfd_link_info *info,
10175 void *finfo, bfd_boolean (*func) (void *, const char *,
10176 Elf_Internal_Sym *,
10178 struct elf_link_hash_entry *))
10180 output_arch_syminfo osi;
10181 struct elf32_arm_link_hash_table *htab;
10183 htab = elf32_arm_hash_table (info);
10184 if (!htab->splt || htab->splt->size == 0)
10187 check_use_blx(htab);
10191 osi.plt_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
10192 htab->splt->output_section);
10193 osi.plt_offset = htab->splt->output_section->vma;
10195 /* Output mapping symbols for the plt header. SymbianOS does not have a
10197 if (htab->vxworks_p)
10199 /* VxWorks shared libraries have no PLT header. */
10202 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
10204 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 12))
10208 else if (!htab->symbian_p)
10210 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
10212 #ifndef FOUR_WORD_PLT
10213 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 16))
10218 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
10222 /* Allocate target specific section data. */
10225 elf32_arm_new_section_hook (bfd *abfd, asection *sec)
10227 if (!sec->used_by_bfd)
10229 _arm_elf_section_data *sdata;
10230 bfd_size_type amt = sizeof (*sdata);
10232 sdata = bfd_zalloc (abfd, amt);
10235 sec->used_by_bfd = sdata;
10238 record_section_with_arm_elf_section_data (sec);
10240 return _bfd_elf_new_section_hook (abfd, sec);
10244 /* Used to order a list of mapping symbols by address. */
10247 elf32_arm_compare_mapping (const void * a, const void * b)
10249 return ((const elf32_arm_section_map *) a)->vma
10250 > ((const elf32_arm_section_map *) b)->vma;
10254 /* Do code byteswapping. Return FALSE afterwards so that the section is
10255 written out as normal. */
10258 elf32_arm_write_section (bfd *output_bfd,
10259 struct bfd_link_info *link_info, asection *sec,
10260 bfd_byte *contents)
10262 int mapcount, errcount;
10263 _arm_elf_section_data *arm_data;
10264 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
10265 elf32_arm_section_map *map;
10266 elf32_vfp11_erratum_list *errnode;
10269 bfd_vma offset = sec->output_section->vma + sec->output_offset;
10273 /* If this section has not been allocated an _arm_elf_section_data
10274 structure then we cannot record anything. */
10275 arm_data = get_arm_elf_section_data (sec);
10276 if (arm_data == NULL)
10279 mapcount = arm_data->mapcount;
10280 map = arm_data->map;
10281 errcount = arm_data->erratumcount;
10285 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
10287 for (errnode = arm_data->erratumlist; errnode != 0;
10288 errnode = errnode->next)
10290 bfd_vma index = errnode->vma - offset;
10292 switch (errnode->type)
10294 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
10296 bfd_vma branch_to_veneer;
10297 /* Original condition code of instruction, plus bit mask for
10298 ARM B instruction. */
10299 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
10302 /* The instruction is before the label. */
10305 /* Above offset included in -4 below. */
10306 branch_to_veneer = errnode->u.b.veneer->vma
10307 - errnode->vma - 4;
10309 if ((signed) branch_to_veneer < -(1 << 25)
10310 || (signed) branch_to_veneer >= (1 << 25))
10311 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
10312 "range"), output_bfd);
10314 insn |= (branch_to_veneer >> 2) & 0xffffff;
10315 contents[endianflip ^ index] = insn & 0xff;
10316 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
10317 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
10318 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
10322 case VFP11_ERRATUM_ARM_VENEER:
10324 bfd_vma branch_from_veneer;
10327 /* Take size of veneer into account. */
10328 branch_from_veneer = errnode->u.v.branch->vma
10329 - errnode->vma - 12;
10331 if ((signed) branch_from_veneer < -(1 << 25)
10332 || (signed) branch_from_veneer >= (1 << 25))
10333 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
10334 "range"), output_bfd);
10336 /* Original instruction. */
10337 insn = errnode->u.v.branch->u.b.vfp_insn;
10338 contents[endianflip ^ index] = insn & 0xff;
10339 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
10340 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
10341 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
10343 /* Branch back to insn after original insn. */
10344 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
10345 contents[endianflip ^ (index + 4)] = insn & 0xff;
10346 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
10347 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
10348 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
10361 if (globals->byteswap_code)
10363 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
10366 for (i = 0; i < mapcount; i++)
10368 if (i == mapcount - 1)
10371 end = map[i + 1].vma;
10373 switch (map[i].type)
10376 /* Byte swap code words. */
10377 while (ptr + 3 < end)
10379 tmp = contents[ptr];
10380 contents[ptr] = contents[ptr + 3];
10381 contents[ptr + 3] = tmp;
10382 tmp = contents[ptr + 1];
10383 contents[ptr + 1] = contents[ptr + 2];
10384 contents[ptr + 2] = tmp;
10390 /* Byte swap code halfwords. */
10391 while (ptr + 1 < end)
10393 tmp = contents[ptr];
10394 contents[ptr] = contents[ptr + 1];
10395 contents[ptr + 1] = tmp;
10401 /* Leave data alone. */
10409 arm_data->mapcount = 0;
10410 arm_data->mapsize = 0;
10411 arm_data->map = NULL;
10412 unrecord_section_with_arm_elf_section_data (sec);
10418 unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
10420 void * ignore ATTRIBUTE_UNUSED)
10422 unrecord_section_with_arm_elf_section_data (sec);
10426 elf32_arm_close_and_cleanup (bfd * abfd)
10428 if (abfd->sections)
10429 bfd_map_over_sections (abfd,
10430 unrecord_section_via_map_over_sections,
10433 return _bfd_elf_close_and_cleanup (abfd);
10437 elf32_arm_bfd_free_cached_info (bfd * abfd)
10439 if (abfd->sections)
10440 bfd_map_over_sections (abfd,
10441 unrecord_section_via_map_over_sections,
10444 return _bfd_free_cached_info (abfd);
10447 /* Display STT_ARM_TFUNC symbols as functions. */
10450 elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
10453 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
10455 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
10456 elfsym->symbol.flags |= BSF_FUNCTION;
10460 /* Mangle thumb function symbols as we read them in. */
10463 elf32_arm_swap_symbol_in (bfd * abfd,
10466 Elf_Internal_Sym *dst)
10468 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
10471 /* New EABI objects mark thumb function symbols by setting the low bit of
10472 the address. Turn these into STT_ARM_TFUNC. */
10473 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
10474 && (dst->st_value & 1))
10476 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
10477 dst->st_value &= ~(bfd_vma) 1;
10483 /* Mangle thumb function symbols as we write them out. */
10486 elf32_arm_swap_symbol_out (bfd *abfd,
10487 const Elf_Internal_Sym *src,
10491 Elf_Internal_Sym newsym;
10493 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
10494 of the address set, as per the new EABI. We do this unconditionally
10495 because objcopy does not set the elf header flags until after
10496 it writes out the symbol table. */
10497 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
10500 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
10501 if (newsym.st_shndx != SHN_UNDEF)
10503 /* Do this only for defined symbols. At link type, the static
10504 linker will simulate the work of dynamic linker of resolving
10505 symbols and will carry over the thumbness of found symbols to
10506 the output symbol table. It's not clear how it happens, but
10507 the thumbness of undefined symbols can well be different at
10508 runtime, and writing '1' for them will be confusing for users
10509 and possibly for dynamic linker itself.
10511 newsym.st_value |= 1;
10516 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
10519 /* Add the PT_ARM_EXIDX program header. */
10522 elf32_arm_modify_segment_map (bfd *abfd,
10523 struct bfd_link_info *info ATTRIBUTE_UNUSED)
10525 struct elf_segment_map *m;
10528 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
10529 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
10531 /* If there is already a PT_ARM_EXIDX header, then we do not
10532 want to add another one. This situation arises when running
10533 "strip"; the input binary already has the header. */
10534 m = elf_tdata (abfd)->segment_map;
10535 while (m && m->p_type != PT_ARM_EXIDX)
10539 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
10542 m->p_type = PT_ARM_EXIDX;
10544 m->sections[0] = sec;
10546 m->next = elf_tdata (abfd)->segment_map;
10547 elf_tdata (abfd)->segment_map = m;
10554 /* We may add a PT_ARM_EXIDX program header. */
10557 elf32_arm_additional_program_headers (bfd *abfd,
10558 struct bfd_link_info *info ATTRIBUTE_UNUSED)
10562 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
10563 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
10569 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
10571 elf32_arm_is_function_type (unsigned int type)
10573 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
10576 /* We use this to override swap_symbol_in and swap_symbol_out. */
10577 const struct elf_size_info elf32_arm_size_info = {
10578 sizeof (Elf32_External_Ehdr),
10579 sizeof (Elf32_External_Phdr),
10580 sizeof (Elf32_External_Shdr),
10581 sizeof (Elf32_External_Rel),
10582 sizeof (Elf32_External_Rela),
10583 sizeof (Elf32_External_Sym),
10584 sizeof (Elf32_External_Dyn),
10585 sizeof (Elf_External_Note),
10589 ELFCLASS32, EV_CURRENT,
10590 bfd_elf32_write_out_phdrs,
10591 bfd_elf32_write_shdrs_and_ehdr,
10592 bfd_elf32_write_relocs,
10593 elf32_arm_swap_symbol_in,
10594 elf32_arm_swap_symbol_out,
10595 bfd_elf32_slurp_reloc_table,
10596 bfd_elf32_slurp_symbol_table,
10597 bfd_elf32_swap_dyn_in,
10598 bfd_elf32_swap_dyn_out,
10599 bfd_elf32_swap_reloc_in,
10600 bfd_elf32_swap_reloc_out,
10601 bfd_elf32_swap_reloca_in,
10602 bfd_elf32_swap_reloca_out
10605 #define ELF_ARCH bfd_arch_arm
10606 #define ELF_MACHINE_CODE EM_ARM
10607 #ifdef __QNXTARGET__
10608 #define ELF_MAXPAGESIZE 0x1000
10610 #define ELF_MAXPAGESIZE 0x8000
10612 #define ELF_MINPAGESIZE 0x1000
10613 #define ELF_COMMONPAGESIZE 0x1000
10615 #define bfd_elf32_mkobject elf32_arm_mkobject
10617 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
10618 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
10619 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
10620 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
10621 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
10622 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
10623 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
10624 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
10625 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
10626 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
10627 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
10628 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
10629 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
10630 #define bfd_elf32_bfd_final_link elf32_arm_bfd_final_link
10632 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
10633 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
10634 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
10635 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
10636 #define elf_backend_check_relocs elf32_arm_check_relocs
10637 #define elf_backend_relocate_section elf32_arm_relocate_section
10638 #define elf_backend_write_section elf32_arm_write_section
10639 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
10640 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
10641 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
10642 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
10643 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
10644 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
10645 #define elf_backend_post_process_headers elf32_arm_post_process_headers
10646 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
10647 #define elf_backend_object_p elf32_arm_object_p
10648 #define elf_backend_section_flags elf32_arm_section_flags
10649 #define elf_backend_fake_sections elf32_arm_fake_sections
10650 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
10651 #define elf_backend_final_write_processing elf32_arm_final_write_processing
10652 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
10653 #define elf_backend_symbol_processing elf32_arm_symbol_processing
10654 #define elf_backend_size_info elf32_arm_size_info
10655 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
10656 #define elf_backend_additional_program_headers \
10657 elf32_arm_additional_program_headers
10658 #define elf_backend_output_arch_local_syms \
10659 elf32_arm_output_arch_local_syms
10660 #define elf_backend_begin_write_processing \
10661 elf32_arm_begin_write_processing
10662 #define elf_backend_is_function_type elf32_arm_is_function_type
10664 #define elf_backend_can_refcount 1
10665 #define elf_backend_can_gc_sections 1
10666 #define elf_backend_plt_readonly 1
10667 #define elf_backend_want_got_plt 1
10668 #define elf_backend_want_plt_sym 0
10669 #define elf_backend_may_use_rel_p 1
10670 #define elf_backend_may_use_rela_p 0
10671 #define elf_backend_default_use_rela_p 0
10673 #define elf_backend_got_header_size 12
10675 #include "elf32-target.h"
10677 /* VxWorks Targets */
10679 #undef TARGET_LITTLE_SYM
10680 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
10681 #undef TARGET_LITTLE_NAME
10682 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
10683 #undef TARGET_BIG_SYM
10684 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
10685 #undef TARGET_BIG_NAME
10686 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
10688 /* Like elf32_arm_link_hash_table_create -- but overrides
10689 appropriately for VxWorks. */
10690 static struct bfd_link_hash_table *
10691 elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
10693 struct bfd_link_hash_table *ret;
10695 ret = elf32_arm_link_hash_table_create (abfd);
10698 struct elf32_arm_link_hash_table *htab
10699 = (struct elf32_arm_link_hash_table *) ret;
10701 htab->vxworks_p = 1;
10707 elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10709 elf32_arm_final_write_processing (abfd, linker);
10710 elf_vxworks_final_write_processing (abfd, linker);
10714 #define elf32_bed elf32_arm_vxworks_bed
10716 #undef bfd_elf32_bfd_link_hash_table_create
10717 #define bfd_elf32_bfd_link_hash_table_create \
10718 elf32_arm_vxworks_link_hash_table_create
10719 #undef elf_backend_add_symbol_hook
10720 #define elf_backend_add_symbol_hook \
10721 elf_vxworks_add_symbol_hook
10722 #undef elf_backend_final_write_processing
10723 #define elf_backend_final_write_processing \
10724 elf32_arm_vxworks_final_write_processing
10725 #undef elf_backend_emit_relocs
10726 #define elf_backend_emit_relocs \
10727 elf_vxworks_emit_relocs
10729 #undef elf_backend_may_use_rel_p
10730 #define elf_backend_may_use_rel_p 0
10731 #undef elf_backend_may_use_rela_p
10732 #define elf_backend_may_use_rela_p 1
10733 #undef elf_backend_default_use_rela_p
10734 #define elf_backend_default_use_rela_p 1
10735 #undef elf_backend_want_plt_sym
10736 #define elf_backend_want_plt_sym 1
10737 #undef ELF_MAXPAGESIZE
10738 #define ELF_MAXPAGESIZE 0x1000
10740 #include "elf32-target.h"
10743 /* Symbian OS Targets */
10745 #undef TARGET_LITTLE_SYM
10746 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
10747 #undef TARGET_LITTLE_NAME
10748 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
10749 #undef TARGET_BIG_SYM
10750 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
10751 #undef TARGET_BIG_NAME
10752 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
10754 /* Like elf32_arm_link_hash_table_create -- but overrides
10755 appropriately for Symbian OS. */
10756 static struct bfd_link_hash_table *
10757 elf32_arm_symbian_link_hash_table_create (bfd *abfd)
10759 struct bfd_link_hash_table *ret;
10761 ret = elf32_arm_link_hash_table_create (abfd);
10764 struct elf32_arm_link_hash_table *htab
10765 = (struct elf32_arm_link_hash_table *)ret;
10766 /* There is no PLT header for Symbian OS. */
10767 htab->plt_header_size = 0;
10768 /* The PLT entries are each three instructions. */
10769 htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry);
10770 htab->symbian_p = 1;
10771 /* Symbian uses armv5t or above, so use_blx is always true. */
10773 htab->root.is_relocatable_executable = 1;
10778 static const struct bfd_elf_special_section
10779 elf32_arm_symbian_special_sections[] =
10781 /* In a BPABI executable, the dynamic linking sections do not go in
10782 the loadable read-only segment. The post-linker may wish to
10783 refer to these sections, but they are not part of the final
10785 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
10786 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
10787 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
10788 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
10789 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
10790 /* These sections do not need to be writable as the SymbianOS
10791 postlinker will arrange things so that no dynamic relocation is
10793 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
10794 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
10795 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
10796 { NULL, 0, 0, 0, 0 }
10800 elf32_arm_symbian_begin_write_processing (bfd *abfd,
10801 struct bfd_link_info *link_info)
10803 /* BPABI objects are never loaded directly by an OS kernel; they are
10804 processed by a postlinker first, into an OS-specific format. If
10805 the D_PAGED bit is set on the file, BFD will align segments on
10806 page boundaries, so that an OS can directly map the file. With
10807 BPABI objects, that just results in wasted space. In addition,
10808 because we clear the D_PAGED bit, map_sections_to_segments will
10809 recognize that the program headers should not be mapped into any
10810 loadable segment. */
10811 abfd->flags &= ~D_PAGED;
10812 elf32_arm_begin_write_processing(abfd, link_info);
10816 elf32_arm_symbian_modify_segment_map (bfd *abfd,
10817 struct bfd_link_info *info)
10819 struct elf_segment_map *m;
10822 /* BPABI shared libraries and executables should have a PT_DYNAMIC
10823 segment. However, because the .dynamic section is not marked
10824 with SEC_LOAD, the generic ELF code will not create such a
10826 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
10829 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
10830 if (m->p_type == PT_DYNAMIC)
10835 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
10836 m->next = elf_tdata (abfd)->segment_map;
10837 elf_tdata (abfd)->segment_map = m;
10841 /* Also call the generic arm routine. */
10842 return elf32_arm_modify_segment_map (abfd, info);
10846 #define elf32_bed elf32_arm_symbian_bed
10848 /* The dynamic sections are not allocated on SymbianOS; the postlinker
10849 will process them and then discard them. */
10850 #undef ELF_DYNAMIC_SEC_FLAGS
10851 #define ELF_DYNAMIC_SEC_FLAGS \
10852 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
10854 #undef bfd_elf32_bfd_link_hash_table_create
10855 #define bfd_elf32_bfd_link_hash_table_create \
10856 elf32_arm_symbian_link_hash_table_create
10857 #undef elf_backend_add_symbol_hook
10859 #undef elf_backend_special_sections
10860 #define elf_backend_special_sections elf32_arm_symbian_special_sections
10862 #undef elf_backend_begin_write_processing
10863 #define elf_backend_begin_write_processing \
10864 elf32_arm_symbian_begin_write_processing
10865 #undef elf_backend_final_write_processing
10866 #define elf_backend_final_write_processing \
10867 elf32_arm_final_write_processing
10868 #undef elf_backend_emit_relocs
10870 #undef elf_backend_modify_segment_map
10871 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
10873 /* There is no .got section for BPABI objects, and hence no header. */
10874 #undef elf_backend_got_header_size
10875 #define elf_backend_got_header_size 0
10877 /* Similarly, there is no .got.plt section. */
10878 #undef elf_backend_want_got_plt
10879 #define elf_backend_want_got_plt 0
10881 #undef elf_backend_may_use_rel_p
10882 #define elf_backend_may_use_rel_p 1
10883 #undef elf_backend_may_use_rela_p
10884 #define elf_backend_may_use_rela_p 0
10885 #undef elf_backend_default_use_rela_p
10886 #define elf_backend_default_use_rela_p 0
10887 #undef elf_backend_want_plt_sym
10888 #define elf_backend_want_plt_sym 0
10889 #undef ELF_MAXPAGESIZE
10890 #define ELF_MAXPAGESIZE 0x8000
10892 #include "elf32-target.h"
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